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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / scsi / ipr.c
blobe5a56395702d6766eae0286a5a848a9b780f329f
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/ioport.h>
63 #include <linux/delay.h>
64 #include <linux/pci.h>
65 #include <linux/wait.h>
66 #include <linux/spinlock.h>
67 #include <linux/sched.h>
68 #include <linux/interrupt.h>
69 #include <linux/blkdev.h>
70 #include <linux/firmware.h>
71 #include <linux/module.h>
72 #include <linux/moduleparam.h>
73 #include <linux/libata.h>
74 #include <asm/io.h>
75 #include <asm/irq.h>
76 #include <asm/processor.h>
77 #include <scsi/scsi.h>
78 #include <scsi/scsi_host.h>
79 #include <scsi/scsi_tcq.h>
80 #include <scsi/scsi_eh.h>
81 #include <scsi/scsi_cmnd.h>
82 #include "ipr.h"
83
84 /*
85 * Global Data
86 */
87 static LIST_HEAD(ipr_ioa_head);
88 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89 static unsigned int ipr_max_speed = 1;
90 static int ipr_testmode = 0;
91 static unsigned int ipr_fastfail = 0;
92 static unsigned int ipr_transop_timeout = 0;
93 static unsigned int ipr_enable_cache = 1;
94 static unsigned int ipr_debug = 0;
95 static unsigned int ipr_dual_ioa_raid = 1;
96 static DEFINE_SPINLOCK(ipr_driver_lock);
97
98 /* This table describes the differences between DMA controller chips */
99 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
101 .mailbox = 0x0042C,
102 .cache_line_size = 0x20,
103 {
104 .set_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_mask_reg = 0x00230,
106 .sense_interrupt_mask_reg = 0x0022C,
107 .clr_interrupt_reg = 0x00228,
108 .sense_interrupt_reg = 0x00224,
109 .ioarrin_reg = 0x00404,
110 .sense_uproc_interrupt_reg = 0x00214,
111 .set_uproc_interrupt_reg = 0x00214,
112 .clr_uproc_interrupt_reg = 0x00218
113 }
114 },
115 { /* Snipe and Scamp */
116 .mailbox = 0x0052C,
117 .cache_line_size = 0x20,
118 {
119 .set_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_mask_reg = 0x0028C,
121 .sense_interrupt_mask_reg = 0x00288,
122 .clr_interrupt_reg = 0x00284,
123 .sense_interrupt_reg = 0x00280,
124 .ioarrin_reg = 0x00504,
125 .sense_uproc_interrupt_reg = 0x00290,
126 .set_uproc_interrupt_reg = 0x00290,
127 .clr_uproc_interrupt_reg = 0x00294
128 }
129 },
130 };
131
132 static const struct ipr_chip_t ipr_chip[] = {
133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
140 };
141
142 static int ipr_max_bus_speeds [] = {
143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
144 };
145
146 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
147 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
148 module_param_named(max_speed, ipr_max_speed, uint, 0);
149 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
150 module_param_named(log_level, ipr_log_level, uint, 0);
151 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
152 module_param_named(testmode, ipr_testmode, int, 0);
153 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
154 module_param_named(fastfail, ipr_fastfail, int, 0);
155 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
156 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
157 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
158 module_param_named(enable_cache, ipr_enable_cache, int, 0);
159 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
160 module_param_named(debug, ipr_debug, int, 0);
161 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
162 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
163 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
164 MODULE_LICENSE("GPL");
165 MODULE_VERSION(IPR_DRIVER_VERSION);
166
167 /* A constant array of IOASCs/URCs/Error Messages */
168 static const
169 struct ipr_error_table_t ipr_error_table[] = {
170 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
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, IPR_DEFAULT_LOG_LEVEL,
179 "FFFE: Soft device bus error recovered by the IOA"},
180 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
181 "4101: Soft device bus fabric error"},
182 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
183 "FFF9: Device sector reassign successful"},
184 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
185 "FFF7: Media error recovered by device rewrite procedures"},
186 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
187 "7001: IOA sector reassignment successful"},
188 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
189 "FFF9: Soft media error. Sector reassignment recommended"},
190 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
191 "FFF7: Media error recovered by IOA rewrite procedures"},
192 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
193 "FF3D: Soft PCI bus error recovered by the IOA"},
194 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
195 "FFF6: Device hardware error recovered by the IOA"},
196 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
197 "FFF6: Device hardware error recovered by the device"},
198 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
199 "FF3D: Soft IOA error recovered by the IOA"},
200 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
201 "FFFA: Undefined device response recovered by the IOA"},
202 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
203 "FFF6: Device bus error, message or command phase"},
204 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
205 "FFFE: Task Management Function failed"},
206 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
207 "FFF6: Failure prediction threshold exceeded"},
208 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
209 "8009: Impending cache battery pack failure"},
210 {0x02040400, 0, 0,
211 "34FF: Disk device format in progress"},
212 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
213 "9070: IOA requested reset"},
214 {0x023F0000, 0, 0,
215 "Synchronization required"},
216 {0x024E0000, 0, 0,
217 "No ready, IOA shutdown"},
218 {0x025A0000, 0, 0,
219 "Not ready, IOA has been shutdown"},
220 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
221 "3020: Storage subsystem configuration error"},
222 {0x03110B00, 0, 0,
223 "FFF5: Medium error, data unreadable, recommend reassign"},
224 {0x03110C00, 0, 0,
225 "7000: Medium error, data unreadable, do not reassign"},
226 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
227 "FFF3: Disk media format bad"},
228 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
229 "3002: Addressed device failed to respond to selection"},
230 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
231 "3100: Device bus error"},
232 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
233 "3109: IOA timed out a device command"},
234 {0x04088000, 0, 0,
235 "3120: SCSI bus is not operational"},
236 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
237 "4100: Hard device bus fabric error"},
238 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
239 "9000: IOA reserved area data check"},
240 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
241 "9001: IOA reserved area invalid data pattern"},
242 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
243 "9002: IOA reserved area LRC error"},
244 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
245 "102E: Out of alternate sectors for disk storage"},
246 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
247 "FFF4: Data transfer underlength error"},
248 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
249 "FFF4: Data transfer overlength error"},
250 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
251 "3400: Logical unit failure"},
252 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FFF4: Device microcode is corrupt"},
254 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
255 "8150: PCI bus error"},
256 {0x04430000, 1, 0,
257 "Unsupported device bus message received"},
258 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
259 "FFF4: Disk device problem"},
260 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
261 "8150: Permanent IOA failure"},
262 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
263 "3010: Disk device returned wrong response to IOA"},
264 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
265 "8151: IOA microcode error"},
266 {0x04448500, 0, 0,
267 "Device bus status error"},
268 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
269 "8157: IOA error requiring IOA reset to recover"},
270 {0x04448700, 0, 0,
271 "ATA device status error"},
272 {0x04490000, 0, 0,
273 "Message reject received from the device"},
274 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
275 "8008: A permanent cache battery pack failure occurred"},
276 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
277 "9090: Disk unit has been modified after the last known status"},
278 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
279 "9081: IOA detected device error"},
280 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
281 "9082: IOA detected device error"},
282 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
283 "3110: Device bus error, message or command phase"},
284 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
285 "3110: SAS Command / Task Management Function failed"},
286 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
287 "9091: Incorrect hardware configuration change has been detected"},
288 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
289 "9073: Invalid multi-adapter configuration"},
290 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
291 "4010: Incorrect connection between cascaded expanders"},
292 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
293 "4020: Connections exceed IOA design limits"},
294 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
295 "4030: Incorrect multipath connection"},
296 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
297 "4110: Unsupported enclosure function"},
298 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
299 "FFF4: Command to logical unit failed"},
300 {0x05240000, 1, 0,
301 "Illegal request, invalid request type or request packet"},
302 {0x05250000, 0, 0,
303 "Illegal request, invalid resource handle"},
304 {0x05258000, 0, 0,
305 "Illegal request, commands not allowed to this device"},
306 {0x05258100, 0, 0,
307 "Illegal request, command not allowed to a secondary adapter"},
308 {0x05260000, 0, 0,
309 "Illegal request, invalid field in parameter list"},
310 {0x05260100, 0, 0,
311 "Illegal request, parameter not supported"},
312 {0x05260200, 0, 0,
313 "Illegal request, parameter value invalid"},
314 {0x052C0000, 0, 0,
315 "Illegal request, command sequence error"},
316 {0x052C8000, 1, 0,
317 "Illegal request, dual adapter support not enabled"},
318 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
319 "9031: Array protection temporarily suspended, protection resuming"},
320 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
321 "9040: Array protection temporarily suspended, protection resuming"},
322 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
323 "3140: Device bus not ready to ready transition"},
324 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
325 "FFFB: SCSI bus was reset"},
326 {0x06290500, 0, 0,
327 "FFFE: SCSI bus transition to single ended"},
328 {0x06290600, 0, 0,
329 "FFFE: SCSI bus transition to LVD"},
330 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
331 "FFFB: SCSI bus was reset by another initiator"},
332 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
333 "3029: A device replacement has occurred"},
334 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
335 "9051: IOA cache data exists for a missing or failed device"},
336 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
337 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
338 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
339 "9025: Disk unit is not supported at its physical location"},
340 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
341 "3020: IOA detected a SCSI bus configuration error"},
342 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
343 "3150: SCSI bus configuration error"},
344 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
345 "9074: Asymmetric advanced function disk configuration"},
346 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
347 "4040: Incomplete multipath connection between IOA and enclosure"},
348 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
349 "4041: Incomplete multipath connection between enclosure and device"},
350 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
351 "9075: Incomplete multipath connection between IOA and remote IOA"},
352 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
353 "9076: Configuration error, missing remote IOA"},
354 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
355 "4050: Enclosure does not support a required multipath function"},
356 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
357 "9041: Array protection temporarily suspended"},
358 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
359 "9042: Corrupt array parity detected on specified device"},
360 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
361 "9030: Array no longer protected due to missing or failed disk unit"},
362 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
363 "9071: Link operational transition"},
364 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
365 "9072: Link not operational transition"},
366 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
367 "9032: Array exposed but still protected"},
368 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
369 "70DD: Device forced failed by disrupt device command"},
370 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
371 "4061: Multipath redundancy level got better"},
372 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
373 "4060: Multipath redundancy level got worse"},
374 {0x07270000, 0, 0,
375 "Failure due to other device"},
376 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
377 "9008: IOA does not support functions expected by devices"},
378 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
379 "9010: Cache data associated with attached devices cannot be found"},
380 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
381 "9011: Cache data belongs to devices other than those attached"},
382 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
383 "9020: Array missing 2 or more devices with only 1 device present"},
384 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
385 "9021: Array missing 2 or more devices with 2 or more devices present"},
386 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
387 "9022: Exposed array is missing a required device"},
388 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
389 "9023: Array member(s) not at required physical locations"},
390 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
391 "9024: Array not functional due to present hardware configuration"},
392 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
393 "9026: Array not functional due to present hardware configuration"},
394 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
395 "9027: Array is missing a device and parity is out of sync"},
396 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
397 "9028: Maximum number of arrays already exist"},
398 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
399 "9050: Required cache data cannot be located for a disk unit"},
400 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
401 "9052: Cache data exists for a device that has been modified"},
402 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
403 "9054: IOA resources not available due to previous problems"},
404 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
405 "9092: Disk unit requires initialization before use"},
406 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
407 "9029: Incorrect hardware configuration change has been detected"},
408 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
409 "9060: One or more disk pairs are missing from an array"},
410 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
411 "9061: One or more disks are missing from an array"},
412 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
413 "9062: One or more disks are missing from an array"},
414 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
415 "9063: Maximum number of functional arrays has been exceeded"},
416 {0x0B260000, 0, 0,
417 "Aborted command, invalid descriptor"},
418 {0x0B5A0000, 0, 0,
419 "Command terminated by host"}
420 };
421
422 static const struct ipr_ses_table_entry ipr_ses_table[] = {
423 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
424 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
425 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
426 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
427 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
428 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
429 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
430 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
431 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
432 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
433 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
434 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
435 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
436 };
437
438 /*
439 * Function Prototypes
440 */
441 static int ipr_reset_alert(struct ipr_cmnd *);
442 static void ipr_process_ccn(struct ipr_cmnd *);
443 static void ipr_process_error(struct ipr_cmnd *);
444 static void ipr_reset_ioa_job(struct ipr_cmnd *);
445 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
446 enum ipr_shutdown_type);
447
448 #ifdef CONFIG_SCSI_IPR_TRACE
449 /**
450 * ipr_trc_hook - Add a trace entry to the driver trace
451 * @ipr_cmd: ipr command struct
452 * @type: trace type
453 * @add_data: additional data
454 *
455 * Return value:
456 * none
457 **/
458 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
459 u8 type, u32 add_data)
460 {
461 struct ipr_trace_entry *trace_entry;
462 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
463
464 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
465 trace_entry->time = jiffies;
466 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
467 trace_entry->type = type;
468 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
469 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
470 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
471 trace_entry->u.add_data = add_data;
472 }
473 #else
474 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
475 #endif
476
477 /**
478 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
479 * @ipr_cmd: ipr command struct
480 *
481 * Return value:
482 * none
483 **/
484 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
485 {
486 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
487 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
488 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
489
490 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
491 ioarcb->write_data_transfer_length = 0;
492 ioarcb->read_data_transfer_length = 0;
493 ioarcb->write_ioadl_len = 0;
494 ioarcb->read_ioadl_len = 0;
495 ioarcb->write_ioadl_addr =
496 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
497 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
498 ioasa->ioasc = 0;
499 ioasa->residual_data_len = 0;
500 ioasa->u.gata.status = 0;
501
502 ipr_cmd->scsi_cmd = NULL;
503 ipr_cmd->qc = NULL;
504 ipr_cmd->sense_buffer[0] = 0;
505 ipr_cmd->dma_use_sg = 0;
506 }
507
508 /**
509 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
510 * @ipr_cmd: ipr command struct
511 *
512 * Return value:
513 * none
514 **/
515 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
516 {
517 ipr_reinit_ipr_cmnd(ipr_cmd);
518 ipr_cmd->u.scratch = 0;
519 ipr_cmd->sibling = NULL;
520 init_timer(&ipr_cmd->timer);
521 }
522
523 /**
524 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
525 * @ioa_cfg: ioa config struct
526 *
527 * Return value:
528 * pointer to ipr command struct
529 **/
530 static
531 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
532 {
533 struct ipr_cmnd *ipr_cmd;
534
535 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
536 list_del(&ipr_cmd->queue);
537 ipr_init_ipr_cmnd(ipr_cmd);
538
539 return ipr_cmd;
540 }
541
542 /**
543 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
544 * @ioa_cfg: ioa config struct
545 * @clr_ints: interrupts to clear
546 *
547 * This function masks all interrupts on the adapter, then clears the
548 * interrupts specified in the mask
549 *
550 * Return value:
551 * none
552 **/
553 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
554 u32 clr_ints)
555 {
556 volatile u32 int_reg;
557
558 /* Stop new interrupts */
559 ioa_cfg->allow_interrupts = 0;
560
561 /* Set interrupt mask to stop all new interrupts */
562 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
563
564 /* Clear any pending interrupts */
565 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
566 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
567 }
568
569 /**
570 * ipr_save_pcix_cmd_reg - Save PCI-X command register
571 * @ioa_cfg: ioa config struct
572 *
573 * Return value:
574 * 0 on success / -EIO on failure
575 **/
576 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
577 {
578 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
579
580 if (pcix_cmd_reg == 0)
581 return 0;
582
583 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
584 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
585 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
586 return -EIO;
587 }
588
589 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
590 return 0;
591 }
592
593 /**
594 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
595 * @ioa_cfg: ioa config struct
596 *
597 * Return value:
598 * 0 on success / -EIO on failure
599 **/
600 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
601 {
602 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
603
604 if (pcix_cmd_reg) {
605 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
606 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
607 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
608 return -EIO;
609 }
610 }
611
612 return 0;
613 }
614
615 /**
616 * ipr_sata_eh_done - done function for aborted SATA commands
617 * @ipr_cmd: ipr command struct
618 *
619 * This function is invoked for ops generated to SATA
620 * devices which are being aborted.
621 *
622 * Return value:
623 * none
624 **/
625 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
626 {
627 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
628 struct ata_queued_cmd *qc = ipr_cmd->qc;
629 struct ipr_sata_port *sata_port = qc->ap->private_data;
630
631 qc->err_mask |= AC_ERR_OTHER;
632 sata_port->ioasa.status |= ATA_BUSY;
633 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
634 ata_qc_complete(qc);
635 }
636
637 /**
638 * ipr_scsi_eh_done - mid-layer done function for aborted ops
639 * @ipr_cmd: ipr command struct
640 *
641 * This function is invoked by the interrupt handler for
642 * ops generated by the SCSI mid-layer which are being aborted.
643 *
644 * Return value:
645 * none
646 **/
647 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
648 {
649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
650 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
651
652 scsi_cmd->result |= (DID_ERROR << 16);
653
654 scsi_dma_unmap(ipr_cmd->scsi_cmd);
655 scsi_cmd->scsi_done(scsi_cmd);
656 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
657 }
658
659 /**
660 * ipr_fail_all_ops - Fails all outstanding ops.
661 * @ioa_cfg: ioa config struct
662 *
663 * This function fails all outstanding ops.
664 *
665 * Return value:
666 * none
667 **/
668 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
669 {
670 struct ipr_cmnd *ipr_cmd, *temp;
671
672 ENTER;
673 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
674 list_del(&ipr_cmd->queue);
675
676 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
677 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
678
679 if (ipr_cmd->scsi_cmd)
680 ipr_cmd->done = ipr_scsi_eh_done;
681 else if (ipr_cmd->qc)
682 ipr_cmd->done = ipr_sata_eh_done;
683
684 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
685 del_timer(&ipr_cmd->timer);
686 ipr_cmd->done(ipr_cmd);
687 }
688
689 LEAVE;
690 }
691
692 /**
693 * ipr_do_req - Send driver initiated requests.
694 * @ipr_cmd: ipr command struct
695 * @done: done function
696 * @timeout_func: timeout function
697 * @timeout: timeout value
698 *
699 * This function sends the specified command to the adapter with the
700 * timeout given. The done function is invoked on command completion.
701 *
702 * Return value:
703 * none
704 **/
705 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
706 void (*done) (struct ipr_cmnd *),
707 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
708 {
709 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
710
711 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
712
713 ipr_cmd->done = done;
714
715 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
716 ipr_cmd->timer.expires = jiffies + timeout;
717 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
718
719 add_timer(&ipr_cmd->timer);
720
721 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
722
723 mb();
724 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
725 ioa_cfg->regs.ioarrin_reg);
726 }
727
728 /**
729 * ipr_internal_cmd_done - Op done function for an internally generated op.
730 * @ipr_cmd: ipr command struct
731 *
732 * This function is the op done function for an internally generated,
733 * blocking op. It simply wakes the sleeping thread.
734 *
735 * Return value:
736 * none
737 **/
738 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
739 {
740 if (ipr_cmd->sibling)
741 ipr_cmd->sibling = NULL;
742 else
743 complete(&ipr_cmd->completion);
744 }
745
746 /**
747 * ipr_send_blocking_cmd - Send command and sleep on its completion.
748 * @ipr_cmd: ipr command struct
749 * @timeout_func: function to invoke if command times out
750 * @timeout: timeout
751 *
752 * Return value:
753 * none
754 **/
755 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
756 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
757 u32 timeout)
758 {
759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
760
761 init_completion(&ipr_cmd->completion);
762 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
763
764 spin_unlock_irq(ioa_cfg->host->host_lock);
765 wait_for_completion(&ipr_cmd->completion);
766 spin_lock_irq(ioa_cfg->host->host_lock);
767 }
768
769 /**
770 * ipr_send_hcam - Send an HCAM to the adapter.
771 * @ioa_cfg: ioa config struct
772 * @type: HCAM type
773 * @hostrcb: hostrcb struct
774 *
775 * This function will send a Host Controlled Async command to the adapter.
776 * If HCAMs are currently not allowed to be issued to the adapter, it will
777 * place the hostrcb on the free queue.
778 *
779 * Return value:
780 * none
781 **/
782 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
783 struct ipr_hostrcb *hostrcb)
784 {
785 struct ipr_cmnd *ipr_cmd;
786 struct ipr_ioarcb *ioarcb;
787
788 if (ioa_cfg->allow_cmds) {
789 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
790 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
791 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
792
793 ipr_cmd->u.hostrcb = hostrcb;
794 ioarcb = &ipr_cmd->ioarcb;
795
796 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
797 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
798 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
799 ioarcb->cmd_pkt.cdb[1] = type;
800 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
801 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
802
803 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
804 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
805 ipr_cmd->ioadl[0].flags_and_data_len =
806 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
807 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
808
809 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
810 ipr_cmd->done = ipr_process_ccn;
811 else
812 ipr_cmd->done = ipr_process_error;
813
814 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
815
816 mb();
817 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
818 ioa_cfg->regs.ioarrin_reg);
819 } else {
820 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
821 }
822 }
823
824 /**
825 * ipr_init_res_entry - Initialize a resource entry struct.
826 * @res: resource entry struct
827 *
828 * Return value:
829 * none
830 **/
831 static void ipr_init_res_entry(struct ipr_resource_entry *res)
832 {
833 res->needs_sync_complete = 0;
834 res->in_erp = 0;
835 res->add_to_ml = 0;
836 res->del_from_ml = 0;
837 res->resetting_device = 0;
838 res->sdev = NULL;
839 res->sata_port = NULL;
840 }
841
842 /**
843 * ipr_handle_config_change - Handle a config change from the adapter
844 * @ioa_cfg: ioa config struct
845 * @hostrcb: hostrcb
846 *
847 * Return value:
848 * none
849 **/
850 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
851 struct ipr_hostrcb *hostrcb)
852 {
853 struct ipr_resource_entry *res = NULL;
854 struct ipr_config_table_entry *cfgte;
855 u32 is_ndn = 1;
856
857 cfgte = &hostrcb->hcam.u.ccn.cfgte;
858
859 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
860 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
861 sizeof(cfgte->res_addr))) {
862 is_ndn = 0;
863 break;
864 }
865 }
866
867 if (is_ndn) {
868 if (list_empty(&ioa_cfg->free_res_q)) {
869 ipr_send_hcam(ioa_cfg,
870 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
871 hostrcb);
872 return;
873 }
874
875 res = list_entry(ioa_cfg->free_res_q.next,
876 struct ipr_resource_entry, queue);
877
878 list_del(&res->queue);
879 ipr_init_res_entry(res);
880 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
881 }
882
883 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
884
885 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
886 if (res->sdev) {
887 res->del_from_ml = 1;
888 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
889 if (ioa_cfg->allow_ml_add_del)
890 schedule_work(&ioa_cfg->work_q);
891 } else
892 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
893 } else if (!res->sdev) {
894 res->add_to_ml = 1;
895 if (ioa_cfg->allow_ml_add_del)
896 schedule_work(&ioa_cfg->work_q);
897 }
898
899 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
900 }
901
902 /**
903 * ipr_process_ccn - Op done function for a CCN.
904 * @ipr_cmd: ipr command struct
905 *
906 * This function is the op done function for a configuration
907 * change notification host controlled async from the adapter.
908 *
909 * Return value:
910 * none
911 **/
912 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
913 {
914 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
915 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
916 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
917
918 list_del(&hostrcb->queue);
919 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
920
921 if (ioasc) {
922 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
923 dev_err(&ioa_cfg->pdev->dev,
924 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
925
926 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
927 } else {
928 ipr_handle_config_change(ioa_cfg, hostrcb);
929 }
930 }
931
932 /**
933 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
934 * @i: index into buffer
935 * @buf: string to modify
936 *
937 * This function will strip all trailing whitespace, pad the end
938 * of the string with a single space, and NULL terminate the string.
939 *
940 * Return value:
941 * new length of string
942 **/
943 static int strip_and_pad_whitespace(int i, char *buf)
944 {
945 while (i && buf[i] == ' ')
946 i--;
947 buf[i+1] = ' ';
948 buf[i+2] = '\0';
949 return i + 2;
950 }
951
952 /**
953 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
954 * @prefix: string to print at start of printk
955 * @hostrcb: hostrcb pointer
956 * @vpd: vendor/product id/sn struct
957 *
958 * Return value:
959 * none
960 **/
961 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
962 struct ipr_vpd *vpd)
963 {
964 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
965 int i = 0;
966
967 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
968 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
969
970 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
971 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
972
973 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
974 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
975
976 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
977 }
978
979 /**
980 * ipr_log_vpd - Log the passed VPD to the error log.
981 * @vpd: vendor/product id/sn struct
982 *
983 * Return value:
984 * none
985 **/
986 static void ipr_log_vpd(struct ipr_vpd *vpd)
987 {
988 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
989 + IPR_SERIAL_NUM_LEN];
990
991 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
992 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
993 IPR_PROD_ID_LEN);
994 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
995 ipr_err("Vendor/Product ID: %s\n", buffer);
996
997 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
998 buffer[IPR_SERIAL_NUM_LEN] = '\0';
999 ipr_err(" Serial Number: %s\n", buffer);
1000 }
1001
1002 /**
1003 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1004 * @prefix: string to print at start of printk
1005 * @hostrcb: hostrcb pointer
1006 * @vpd: vendor/product id/sn/wwn struct
1007 *
1008 * Return value:
1009 * none
1010 **/
1011 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1012 struct ipr_ext_vpd *vpd)
1013 {
1014 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1015 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1016 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1017 }
1018
1019 /**
1020 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1021 * @vpd: vendor/product id/sn/wwn struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1027 {
1028 ipr_log_vpd(&vpd->vpd);
1029 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1030 be32_to_cpu(vpd->wwid[1]));
1031 }
1032
1033 /**
1034 * ipr_log_enhanced_cache_error - Log a cache error.
1035 * @ioa_cfg: ioa config struct
1036 * @hostrcb: hostrcb struct
1037 *
1038 * Return value:
1039 * none
1040 **/
1041 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1042 struct ipr_hostrcb *hostrcb)
1043 {
1044 struct ipr_hostrcb_type_12_error *error =
1045 &hostrcb->hcam.u.error.u.type_12_error;
1046
1047 ipr_err("-----Current Configuration-----\n");
1048 ipr_err("Cache Directory Card Information:\n");
1049 ipr_log_ext_vpd(&error->ioa_vpd);
1050 ipr_err("Adapter Card Information:\n");
1051 ipr_log_ext_vpd(&error->cfc_vpd);
1052
1053 ipr_err("-----Expected Configuration-----\n");
1054 ipr_err("Cache Directory Card Information:\n");
1055 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1056 ipr_err("Adapter Card Information:\n");
1057 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1058
1059 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1060 be32_to_cpu(error->ioa_data[0]),
1061 be32_to_cpu(error->ioa_data[1]),
1062 be32_to_cpu(error->ioa_data[2]));
1063 }
1064
1065 /**
1066 * ipr_log_cache_error - Log a cache error.
1067 * @ioa_cfg: ioa config struct
1068 * @hostrcb: hostrcb struct
1069 *
1070 * Return value:
1071 * none
1072 **/
1073 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1074 struct ipr_hostrcb *hostrcb)
1075 {
1076 struct ipr_hostrcb_type_02_error *error =
1077 &hostrcb->hcam.u.error.u.type_02_error;
1078
1079 ipr_err("-----Current Configuration-----\n");
1080 ipr_err("Cache Directory Card Information:\n");
1081 ipr_log_vpd(&error->ioa_vpd);
1082 ipr_err("Adapter Card Information:\n");
1083 ipr_log_vpd(&error->cfc_vpd);
1084
1085 ipr_err("-----Expected Configuration-----\n");
1086 ipr_err("Cache Directory Card Information:\n");
1087 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1088 ipr_err("Adapter Card Information:\n");
1089 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1090
1091 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1092 be32_to_cpu(error->ioa_data[0]),
1093 be32_to_cpu(error->ioa_data[1]),
1094 be32_to_cpu(error->ioa_data[2]));
1095 }
1096
1097 /**
1098 * ipr_log_enhanced_config_error - Log a configuration error.
1099 * @ioa_cfg: ioa config struct
1100 * @hostrcb: hostrcb struct
1101 *
1102 * Return value:
1103 * none
1104 **/
1105 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1106 struct ipr_hostrcb *hostrcb)
1107 {
1108 int errors_logged, i;
1109 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1110 struct ipr_hostrcb_type_13_error *error;
1111
1112 error = &hostrcb->hcam.u.error.u.type_13_error;
1113 errors_logged = be32_to_cpu(error->errors_logged);
1114
1115 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1116 be32_to_cpu(error->errors_detected), errors_logged);
1117
1118 dev_entry = error->dev;
1119
1120 for (i = 0; i < errors_logged; i++, dev_entry++) {
1121 ipr_err_separator;
1122
1123 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1124 ipr_log_ext_vpd(&dev_entry->vpd);
1125
1126 ipr_err("-----New Device Information-----\n");
1127 ipr_log_ext_vpd(&dev_entry->new_vpd);
1128
1129 ipr_err("Cache Directory Card Information:\n");
1130 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1131
1132 ipr_err("Adapter Card Information:\n");
1133 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1134 }
1135 }
1136
1137 /**
1138 * ipr_log_config_error - Log a configuration error.
1139 * @ioa_cfg: ioa config struct
1140 * @hostrcb: hostrcb struct
1141 *
1142 * Return value:
1143 * none
1144 **/
1145 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1146 struct ipr_hostrcb *hostrcb)
1147 {
1148 int errors_logged, i;
1149 struct ipr_hostrcb_device_data_entry *dev_entry;
1150 struct ipr_hostrcb_type_03_error *error;
1151
1152 error = &hostrcb->hcam.u.error.u.type_03_error;
1153 errors_logged = be32_to_cpu(error->errors_logged);
1154
1155 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1156 be32_to_cpu(error->errors_detected), errors_logged);
1157
1158 dev_entry = error->dev;
1159
1160 for (i = 0; i < errors_logged; i++, dev_entry++) {
1161 ipr_err_separator;
1162
1163 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1164 ipr_log_vpd(&dev_entry->vpd);
1165
1166 ipr_err("-----New Device Information-----\n");
1167 ipr_log_vpd(&dev_entry->new_vpd);
1168
1169 ipr_err("Cache Directory Card Information:\n");
1170 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1171
1172 ipr_err("Adapter Card Information:\n");
1173 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1174
1175 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1176 be32_to_cpu(dev_entry->ioa_data[0]),
1177 be32_to_cpu(dev_entry->ioa_data[1]),
1178 be32_to_cpu(dev_entry->ioa_data[2]),
1179 be32_to_cpu(dev_entry->ioa_data[3]),
1180 be32_to_cpu(dev_entry->ioa_data[4]));
1181 }
1182 }
1183
1184 /**
1185 * ipr_log_enhanced_array_error - Log an array configuration error.
1186 * @ioa_cfg: ioa config struct
1187 * @hostrcb: hostrcb struct
1188 *
1189 * Return value:
1190 * none
1191 **/
1192 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1193 struct ipr_hostrcb *hostrcb)
1194 {
1195 int i, num_entries;
1196 struct ipr_hostrcb_type_14_error *error;
1197 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1198 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1199
1200 error = &hostrcb->hcam.u.error.u.type_14_error;
1201
1202 ipr_err_separator;
1203
1204 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1205 error->protection_level,
1206 ioa_cfg->host->host_no,
1207 error->last_func_vset_res_addr.bus,
1208 error->last_func_vset_res_addr.target,
1209 error->last_func_vset_res_addr.lun);
1210
1211 ipr_err_separator;
1212
1213 array_entry = error->array_member;
1214 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1215 sizeof(error->array_member));
1216
1217 for (i = 0; i < num_entries; i++, array_entry++) {
1218 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1219 continue;
1220
1221 if (be32_to_cpu(error->exposed_mode_adn) == i)
1222 ipr_err("Exposed Array Member %d:\n", i);
1223 else
1224 ipr_err("Array Member %d:\n", i);
1225
1226 ipr_log_ext_vpd(&array_entry->vpd);
1227 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1228 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1229 "Expected Location");
1230
1231 ipr_err_separator;
1232 }
1233 }
1234
1235 /**
1236 * ipr_log_array_error - Log an array configuration error.
1237 * @ioa_cfg: ioa config struct
1238 * @hostrcb: hostrcb struct
1239 *
1240 * Return value:
1241 * none
1242 **/
1243 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1244 struct ipr_hostrcb *hostrcb)
1245 {
1246 int i;
1247 struct ipr_hostrcb_type_04_error *error;
1248 struct ipr_hostrcb_array_data_entry *array_entry;
1249 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1250
1251 error = &hostrcb->hcam.u.error.u.type_04_error;
1252
1253 ipr_err_separator;
1254
1255 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1256 error->protection_level,
1257 ioa_cfg->host->host_no,
1258 error->last_func_vset_res_addr.bus,
1259 error->last_func_vset_res_addr.target,
1260 error->last_func_vset_res_addr.lun);
1261
1262 ipr_err_separator;
1263
1264 array_entry = error->array_member;
1265
1266 for (i = 0; i < 18; i++) {
1267 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1268 continue;
1269
1270 if (be32_to_cpu(error->exposed_mode_adn) == i)
1271 ipr_err("Exposed Array Member %d:\n", i);
1272 else
1273 ipr_err("Array Member %d:\n", i);
1274
1275 ipr_log_vpd(&array_entry->vpd);
1276
1277 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1278 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1279 "Expected Location");
1280
1281 ipr_err_separator;
1282
1283 if (i == 9)
1284 array_entry = error->array_member2;
1285 else
1286 array_entry++;
1287 }
1288 }
1289
1290 /**
1291 * ipr_log_hex_data - Log additional hex IOA error data.
1292 * @ioa_cfg: ioa config struct
1293 * @data: IOA error data
1294 * @len: data length
1295 *
1296 * Return value:
1297 * none
1298 **/
1299 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1300 {
1301 int i;
1302
1303 if (len == 0)
1304 return;
1305
1306 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1307 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1308
1309 for (i = 0; i < len / 4; i += 4) {
1310 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1311 be32_to_cpu(data[i]),
1312 be32_to_cpu(data[i+1]),
1313 be32_to_cpu(data[i+2]),
1314 be32_to_cpu(data[i+3]));
1315 }
1316 }
1317
1318 /**
1319 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1320 * @ioa_cfg: ioa config struct
1321 * @hostrcb: hostrcb struct
1322 *
1323 * Return value:
1324 * none
1325 **/
1326 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1327 struct ipr_hostrcb *hostrcb)
1328 {
1329 struct ipr_hostrcb_type_17_error *error;
1330
1331 error = &hostrcb->hcam.u.error.u.type_17_error;
1332 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1333 strstrip(error->failure_reason);
1334
1335 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1336 be32_to_cpu(hostrcb->hcam.u.error.prc));
1337 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1338 ipr_log_hex_data(ioa_cfg, error->data,
1339 be32_to_cpu(hostrcb->hcam.length) -
1340 (offsetof(struct ipr_hostrcb_error, u) +
1341 offsetof(struct ipr_hostrcb_type_17_error, data)));
1342 }
1343
1344 /**
1345 * ipr_log_dual_ioa_error - Log a dual adapter error.
1346 * @ioa_cfg: ioa config struct
1347 * @hostrcb: hostrcb struct
1348 *
1349 * Return value:
1350 * none
1351 **/
1352 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1353 struct ipr_hostrcb *hostrcb)
1354 {
1355 struct ipr_hostrcb_type_07_error *error;
1356
1357 error = &hostrcb->hcam.u.error.u.type_07_error;
1358 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1359 strstrip(error->failure_reason);
1360
1361 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1362 be32_to_cpu(hostrcb->hcam.u.error.prc));
1363 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1364 ipr_log_hex_data(ioa_cfg, error->data,
1365 be32_to_cpu(hostrcb->hcam.length) -
1366 (offsetof(struct ipr_hostrcb_error, u) +
1367 offsetof(struct ipr_hostrcb_type_07_error, data)));
1368 }
1369
1370 static const struct {
1371 u8 active;
1372 char *desc;
1373 } path_active_desc[] = {
1374 { IPR_PATH_NO_INFO, "Path" },
1375 { IPR_PATH_ACTIVE, "Active path" },
1376 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1377 };
1378
1379 static const struct {
1380 u8 state;
1381 char *desc;
1382 } path_state_desc[] = {
1383 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1384 { IPR_PATH_HEALTHY, "is healthy" },
1385 { IPR_PATH_DEGRADED, "is degraded" },
1386 { IPR_PATH_FAILED, "is failed" }
1387 };
1388
1389 /**
1390 * ipr_log_fabric_path - Log a fabric path error
1391 * @hostrcb: hostrcb struct
1392 * @fabric: fabric descriptor
1393 *
1394 * Return value:
1395 * none
1396 **/
1397 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1398 struct ipr_hostrcb_fabric_desc *fabric)
1399 {
1400 int i, j;
1401 u8 path_state = fabric->path_state;
1402 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1403 u8 state = path_state & IPR_PATH_STATE_MASK;
1404
1405 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1406 if (path_active_desc[i].active != active)
1407 continue;
1408
1409 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1410 if (path_state_desc[j].state != state)
1411 continue;
1412
1413 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1414 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1415 path_active_desc[i].desc, path_state_desc[j].desc,
1416 fabric->ioa_port);
1417 } else if (fabric->cascaded_expander == 0xff) {
1418 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1419 path_active_desc[i].desc, path_state_desc[j].desc,
1420 fabric->ioa_port, fabric->phy);
1421 } else if (fabric->phy == 0xff) {
1422 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1423 path_active_desc[i].desc, path_state_desc[j].desc,
1424 fabric->ioa_port, fabric->cascaded_expander);
1425 } else {
1426 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1427 path_active_desc[i].desc, path_state_desc[j].desc,
1428 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1429 }
1430 return;
1431 }
1432 }
1433
1434 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1435 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1436 }
1437
1438 static const struct {
1439 u8 type;
1440 char *desc;
1441 } path_type_desc[] = {
1442 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1443 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1444 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1445 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1446 };
1447
1448 static const struct {
1449 u8 status;
1450 char *desc;
1451 } path_status_desc[] = {
1452 { IPR_PATH_CFG_NO_PROB, "Functional" },
1453 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1454 { IPR_PATH_CFG_FAILED, "Failed" },
1455 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1456 { IPR_PATH_NOT_DETECTED, "Missing" },
1457 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1458 };
1459
1460 static const char *link_rate[] = {
1461 "unknown",
1462 "disabled",
1463 "phy reset problem",
1464 "spinup hold",
1465 "port selector",
1466 "unknown",
1467 "unknown",
1468 "unknown",
1469 "1.5Gbps",
1470 "3.0Gbps",
1471 "unknown",
1472 "unknown",
1473 "unknown",
1474 "unknown",
1475 "unknown",
1476 "unknown"
1477 };
1478
1479 /**
1480 * ipr_log_path_elem - Log a fabric path element.
1481 * @hostrcb: hostrcb struct
1482 * @cfg: fabric path element struct
1483 *
1484 * Return value:
1485 * none
1486 **/
1487 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1488 struct ipr_hostrcb_config_element *cfg)
1489 {
1490 int i, j;
1491 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1492 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1493
1494 if (type == IPR_PATH_CFG_NOT_EXIST)
1495 return;
1496
1497 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1498 if (path_type_desc[i].type != type)
1499 continue;
1500
1501 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1502 if (path_status_desc[j].status != status)
1503 continue;
1504
1505 if (type == IPR_PATH_CFG_IOA_PORT) {
1506 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1507 path_status_desc[j].desc, path_type_desc[i].desc,
1508 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1509 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1510 } else {
1511 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1512 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1513 path_status_desc[j].desc, path_type_desc[i].desc,
1514 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1515 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1516 } else if (cfg->cascaded_expander == 0xff) {
1517 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1518 "WWN=%08X%08X\n", path_status_desc[j].desc,
1519 path_type_desc[i].desc, cfg->phy,
1520 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1521 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1522 } else if (cfg->phy == 0xff) {
1523 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1524 "WWN=%08X%08X\n", path_status_desc[j].desc,
1525 path_type_desc[i].desc, cfg->cascaded_expander,
1526 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1527 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1528 } else {
1529 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1530 "WWN=%08X%08X\n", path_status_desc[j].desc,
1531 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1532 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1533 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1534 }
1535 }
1536 return;
1537 }
1538 }
1539
1540 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1541 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1542 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1543 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1544 }
1545
1546 /**
1547 * ipr_log_fabric_error - Log a fabric error.
1548 * @ioa_cfg: ioa config struct
1549 * @hostrcb: hostrcb struct
1550 *
1551 * Return value:
1552 * none
1553 **/
1554 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1555 struct ipr_hostrcb *hostrcb)
1556 {
1557 struct ipr_hostrcb_type_20_error *error;
1558 struct ipr_hostrcb_fabric_desc *fabric;
1559 struct ipr_hostrcb_config_element *cfg;
1560 int i, add_len;
1561
1562 error = &hostrcb->hcam.u.error.u.type_20_error;
1563 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1564 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1565
1566 add_len = be32_to_cpu(hostrcb->hcam.length) -
1567 (offsetof(struct ipr_hostrcb_error, u) +
1568 offsetof(struct ipr_hostrcb_type_20_error, desc));
1569
1570 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1571 ipr_log_fabric_path(hostrcb, fabric);
1572 for_each_fabric_cfg(fabric, cfg)
1573 ipr_log_path_elem(hostrcb, cfg);
1574
1575 add_len -= be16_to_cpu(fabric->length);
1576 fabric = (struct ipr_hostrcb_fabric_desc *)
1577 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1578 }
1579
1580 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1581 }
1582
1583 /**
1584 * ipr_log_generic_error - Log an adapter error.
1585 * @ioa_cfg: ioa config struct
1586 * @hostrcb: hostrcb struct
1587 *
1588 * Return value:
1589 * none
1590 **/
1591 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1592 struct ipr_hostrcb *hostrcb)
1593 {
1594 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1595 be32_to_cpu(hostrcb->hcam.length));
1596 }
1597
1598 /**
1599 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1600 * @ioasc: IOASC
1601 *
1602 * This function will return the index of into the ipr_error_table
1603 * for the specified IOASC. If the IOASC is not in the table,
1604 * 0 will be returned, which points to the entry used for unknown errors.
1605 *
1606 * Return value:
1607 * index into the ipr_error_table
1608 **/
1609 static u32 ipr_get_error(u32 ioasc)
1610 {
1611 int i;
1612
1613 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1614 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1615 return i;
1616
1617 return 0;
1618 }
1619
1620 /**
1621 * ipr_handle_log_data - Log an adapter error.
1622 * @ioa_cfg: ioa config struct
1623 * @hostrcb: hostrcb struct
1624 *
1625 * This function logs an adapter error to the system.
1626 *
1627 * Return value:
1628 * none
1629 **/
1630 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1631 struct ipr_hostrcb *hostrcb)
1632 {
1633 u32 ioasc;
1634 int error_index;
1635
1636 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1637 return;
1638
1639 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1640 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1641
1642 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1643
1644 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1645 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1646 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1647 scsi_report_bus_reset(ioa_cfg->host,
1648 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1649 }
1650
1651 error_index = ipr_get_error(ioasc);
1652
1653 if (!ipr_error_table[error_index].log_hcam)
1654 return;
1655
1656 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1657
1658 /* Set indication we have logged an error */
1659 ioa_cfg->errors_logged++;
1660
1661 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1662 return;
1663 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1664 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1665
1666 switch (hostrcb->hcam.overlay_id) {
1667 case IPR_HOST_RCB_OVERLAY_ID_2:
1668 ipr_log_cache_error(ioa_cfg, hostrcb);
1669 break;
1670 case IPR_HOST_RCB_OVERLAY_ID_3:
1671 ipr_log_config_error(ioa_cfg, hostrcb);
1672 break;
1673 case IPR_HOST_RCB_OVERLAY_ID_4:
1674 case IPR_HOST_RCB_OVERLAY_ID_6:
1675 ipr_log_array_error(ioa_cfg, hostrcb);
1676 break;
1677 case IPR_HOST_RCB_OVERLAY_ID_7:
1678 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1679 break;
1680 case IPR_HOST_RCB_OVERLAY_ID_12:
1681 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1682 break;
1683 case IPR_HOST_RCB_OVERLAY_ID_13:
1684 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1685 break;
1686 case IPR_HOST_RCB_OVERLAY_ID_14:
1687 case IPR_HOST_RCB_OVERLAY_ID_16:
1688 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1689 break;
1690 case IPR_HOST_RCB_OVERLAY_ID_17:
1691 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1692 break;
1693 case IPR_HOST_RCB_OVERLAY_ID_20:
1694 ipr_log_fabric_error(ioa_cfg, hostrcb);
1695 break;
1696 case IPR_HOST_RCB_OVERLAY_ID_1:
1697 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1698 default:
1699 ipr_log_generic_error(ioa_cfg, hostrcb);
1700 break;
1701 }
1702 }
1703
1704 /**
1705 * ipr_process_error - Op done function for an adapter error log.
1706 * @ipr_cmd: ipr command struct
1707 *
1708 * This function is the op done function for an error log host
1709 * controlled async from the adapter. It will log the error and
1710 * send the HCAM back to the adapter.
1711 *
1712 * Return value:
1713 * none
1714 **/
1715 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1716 {
1717 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1718 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1719 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1720 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1721
1722 list_del(&hostrcb->queue);
1723 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1724
1725 if (!ioasc) {
1726 ipr_handle_log_data(ioa_cfg, hostrcb);
1727 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1728 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1729 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1730 dev_err(&ioa_cfg->pdev->dev,
1731 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1732 }
1733
1734 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1735 }
1736
1737 /**
1738 * ipr_timeout - An internally generated op has timed out.
1739 * @ipr_cmd: ipr command struct
1740 *
1741 * This function blocks host requests and initiates an
1742 * adapter reset.
1743 *
1744 * Return value:
1745 * none
1746 **/
1747 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1748 {
1749 unsigned long lock_flags = 0;
1750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1751
1752 ENTER;
1753 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1754
1755 ioa_cfg->errors_logged++;
1756 dev_err(&ioa_cfg->pdev->dev,
1757 "Adapter being reset due to command timeout.\n");
1758
1759 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1760 ioa_cfg->sdt_state = GET_DUMP;
1761
1762 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1763 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1764
1765 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1766 LEAVE;
1767 }
1768
1769 /**
1770 * ipr_oper_timeout - Adapter timed out transitioning to operational
1771 * @ipr_cmd: ipr command struct
1772 *
1773 * This function blocks host requests and initiates an
1774 * adapter reset.
1775 *
1776 * Return value:
1777 * none
1778 **/
1779 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1780 {
1781 unsigned long lock_flags = 0;
1782 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1783
1784 ENTER;
1785 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1786
1787 ioa_cfg->errors_logged++;
1788 dev_err(&ioa_cfg->pdev->dev,
1789 "Adapter timed out transitioning to operational.\n");
1790
1791 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1792 ioa_cfg->sdt_state = GET_DUMP;
1793
1794 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1795 if (ipr_fastfail)
1796 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1797 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1798 }
1799
1800 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1801 LEAVE;
1802 }
1803
1804 /**
1805 * ipr_reset_reload - Reset/Reload the IOA
1806 * @ioa_cfg: ioa config struct
1807 * @shutdown_type: shutdown type
1808 *
1809 * This function resets the adapter and re-initializes it.
1810 * This function assumes that all new host commands have been stopped.
1811 * Return value:
1812 * SUCCESS / FAILED
1813 **/
1814 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1815 enum ipr_shutdown_type shutdown_type)
1816 {
1817 if (!ioa_cfg->in_reset_reload)
1818 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1819
1820 spin_unlock_irq(ioa_cfg->host->host_lock);
1821 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1822 spin_lock_irq(ioa_cfg->host->host_lock);
1823
1824 /* If we got hit with a host reset while we were already resetting
1825 the adapter for some reason, and the reset failed. */
1826 if (ioa_cfg->ioa_is_dead) {
1827 ipr_trace;
1828 return FAILED;
1829 }
1830
1831 return SUCCESS;
1832 }
1833
1834 /**
1835 * ipr_find_ses_entry - Find matching SES in SES table
1836 * @res: resource entry struct of SES
1837 *
1838 * Return value:
1839 * pointer to SES table entry / NULL on failure
1840 **/
1841 static const struct ipr_ses_table_entry *
1842 ipr_find_ses_entry(struct ipr_resource_entry *res)
1843 {
1844 int i, j, matches;
1845 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1846
1847 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1848 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1849 if (ste->compare_product_id_byte[j] == 'X') {
1850 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1851 matches++;
1852 else
1853 break;
1854 } else
1855 matches++;
1856 }
1857
1858 if (matches == IPR_PROD_ID_LEN)
1859 return ste;
1860 }
1861
1862 return NULL;
1863 }
1864
1865 /**
1866 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1867 * @ioa_cfg: ioa config struct
1868 * @bus: SCSI bus
1869 * @bus_width: bus width
1870 *
1871 * Return value:
1872 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1873 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1874 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1875 * max 160MHz = max 320MB/sec).
1876 **/
1877 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1878 {
1879 struct ipr_resource_entry *res;
1880 const struct ipr_ses_table_entry *ste;
1881 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1882
1883 /* Loop through each config table entry in the config table buffer */
1884 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1885 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1886 continue;
1887
1888 if (bus != res->cfgte.res_addr.bus)
1889 continue;
1890
1891 if (!(ste = ipr_find_ses_entry(res)))
1892 continue;
1893
1894 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1895 }
1896
1897 return max_xfer_rate;
1898 }
1899
1900 /**
1901 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1902 * @ioa_cfg: ioa config struct
1903 * @max_delay: max delay in micro-seconds to wait
1904 *
1905 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1906 *
1907 * Return value:
1908 * 0 on success / other on failure
1909 **/
1910 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1911 {
1912 volatile u32 pcii_reg;
1913 int delay = 1;
1914
1915 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1916 while (delay < max_delay) {
1917 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1918
1919 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1920 return 0;
1921
1922 /* udelay cannot be used if delay is more than a few milliseconds */
1923 if ((delay / 1000) > MAX_UDELAY_MS)
1924 mdelay(delay / 1000);
1925 else
1926 udelay(delay);
1927
1928 delay += delay;
1929 }
1930 return -EIO;
1931 }
1932
1933 /**
1934 * ipr_get_ldump_data_section - Dump IOA memory
1935 * @ioa_cfg: ioa config struct
1936 * @start_addr: adapter address to dump
1937 * @dest: destination kernel buffer
1938 * @length_in_words: length to dump in 4 byte words
1939 *
1940 * Return value:
1941 * 0 on success / -EIO on failure
1942 **/
1943 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1944 u32 start_addr,
1945 __be32 *dest, u32 length_in_words)
1946 {
1947 volatile u32 temp_pcii_reg;
1948 int i, delay = 0;
1949
1950 /* Write IOA interrupt reg starting LDUMP state */
1951 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1952 ioa_cfg->regs.set_uproc_interrupt_reg);
1953
1954 /* Wait for IO debug acknowledge */
1955 if (ipr_wait_iodbg_ack(ioa_cfg,
1956 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1957 dev_err(&ioa_cfg->pdev->dev,
1958 "IOA dump long data transfer timeout\n");
1959 return -EIO;
1960 }
1961
1962 /* Signal LDUMP interlocked - clear IO debug ack */
1963 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1964 ioa_cfg->regs.clr_interrupt_reg);
1965
1966 /* Write Mailbox with starting address */
1967 writel(start_addr, ioa_cfg->ioa_mailbox);
1968
1969 /* Signal address valid - clear IOA Reset alert */
1970 writel(IPR_UPROCI_RESET_ALERT,
1971 ioa_cfg->regs.clr_uproc_interrupt_reg);
1972
1973 for (i = 0; i < length_in_words; i++) {
1974 /* Wait for IO debug acknowledge */
1975 if (ipr_wait_iodbg_ack(ioa_cfg,
1976 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1977 dev_err(&ioa_cfg->pdev->dev,
1978 "IOA dump short data transfer timeout\n");
1979 return -EIO;
1980 }
1981
1982 /* Read data from mailbox and increment destination pointer */
1983 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1984 dest++;
1985
1986 /* For all but the last word of data, signal data received */
1987 if (i < (length_in_words - 1)) {
1988 /* Signal dump data received - Clear IO debug Ack */
1989 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1990 ioa_cfg->regs.clr_interrupt_reg);
1991 }
1992 }
1993
1994 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1995 writel(IPR_UPROCI_RESET_ALERT,
1996 ioa_cfg->regs.set_uproc_interrupt_reg);
1997
1998 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1999 ioa_cfg->regs.clr_uproc_interrupt_reg);
2000
2001 /* Signal dump data received - Clear IO debug Ack */
2002 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2003 ioa_cfg->regs.clr_interrupt_reg);
2004
2005 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2006 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2007 temp_pcii_reg =
2008 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2009
2010 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2011 return 0;
2012
2013 udelay(10);
2014 delay += 10;
2015 }
2016
2017 return 0;
2018 }
2019
2020 #ifdef CONFIG_SCSI_IPR_DUMP
2021 /**
2022 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2023 * @ioa_cfg: ioa config struct
2024 * @pci_address: adapter address
2025 * @length: length of data to copy
2026 *
2027 * Copy data from PCI adapter to kernel buffer.
2028 * Note: length MUST be a 4 byte multiple
2029 * Return value:
2030 * 0 on success / other on failure
2031 **/
2032 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2033 unsigned long pci_address, u32 length)
2034 {
2035 int bytes_copied = 0;
2036 int cur_len, rc, rem_len, rem_page_len;
2037 __be32 *page;
2038 unsigned long lock_flags = 0;
2039 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2040
2041 while (bytes_copied < length &&
2042 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2043 if (ioa_dump->page_offset >= PAGE_SIZE ||
2044 ioa_dump->page_offset == 0) {
2045 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2046
2047 if (!page) {
2048 ipr_trace;
2049 return bytes_copied;
2050 }
2051
2052 ioa_dump->page_offset = 0;
2053 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2054 ioa_dump->next_page_index++;
2055 } else
2056 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2057
2058 rem_len = length - bytes_copied;
2059 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2060 cur_len = min(rem_len, rem_page_len);
2061
2062 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2063 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2064 rc = -EIO;
2065 } else {
2066 rc = ipr_get_ldump_data_section(ioa_cfg,
2067 pci_address + bytes_copied,
2068 &page[ioa_dump->page_offset / 4],
2069 (cur_len / sizeof(u32)));
2070 }
2071 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2072
2073 if (!rc) {
2074 ioa_dump->page_offset += cur_len;
2075 bytes_copied += cur_len;
2076 } else {
2077 ipr_trace;
2078 break;
2079 }
2080 schedule();
2081 }
2082
2083 return bytes_copied;
2084 }
2085
2086 /**
2087 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2088 * @hdr: dump entry header struct
2089 *
2090 * Return value:
2091 * nothing
2092 **/
2093 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2094 {
2095 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2096 hdr->num_elems = 1;
2097 hdr->offset = sizeof(*hdr);
2098 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2099 }
2100
2101 /**
2102 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2103 * @ioa_cfg: ioa config struct
2104 * @driver_dump: driver dump struct
2105 *
2106 * Return value:
2107 * nothing
2108 **/
2109 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2110 struct ipr_driver_dump *driver_dump)
2111 {
2112 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2113
2114 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2115 driver_dump->ioa_type_entry.hdr.len =
2116 sizeof(struct ipr_dump_ioa_type_entry) -
2117 sizeof(struct ipr_dump_entry_header);
2118 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2119 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2120 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2121 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2122 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2123 ucode_vpd->minor_release[1];
2124 driver_dump->hdr.num_entries++;
2125 }
2126
2127 /**
2128 * ipr_dump_version_data - Fill in the driver version in the dump.
2129 * @ioa_cfg: ioa config struct
2130 * @driver_dump: driver dump struct
2131 *
2132 * Return value:
2133 * nothing
2134 **/
2135 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2136 struct ipr_driver_dump *driver_dump)
2137 {
2138 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2139 driver_dump->version_entry.hdr.len =
2140 sizeof(struct ipr_dump_version_entry) -
2141 sizeof(struct ipr_dump_entry_header);
2142 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2143 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2144 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2145 driver_dump->hdr.num_entries++;
2146 }
2147
2148 /**
2149 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2150 * @ioa_cfg: ioa config struct
2151 * @driver_dump: driver dump struct
2152 *
2153 * Return value:
2154 * nothing
2155 **/
2156 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2157 struct ipr_driver_dump *driver_dump)
2158 {
2159 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2160 driver_dump->trace_entry.hdr.len =
2161 sizeof(struct ipr_dump_trace_entry) -
2162 sizeof(struct ipr_dump_entry_header);
2163 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2164 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2165 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2166 driver_dump->hdr.num_entries++;
2167 }
2168
2169 /**
2170 * ipr_dump_location_data - Fill in the IOA location in the dump.
2171 * @ioa_cfg: ioa config struct
2172 * @driver_dump: driver dump struct
2173 *
2174 * Return value:
2175 * nothing
2176 **/
2177 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2178 struct ipr_driver_dump *driver_dump)
2179 {
2180 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2181 driver_dump->location_entry.hdr.len =
2182 sizeof(struct ipr_dump_location_entry) -
2183 sizeof(struct ipr_dump_entry_header);
2184 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2185 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2186 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2187 driver_dump->hdr.num_entries++;
2188 }
2189
2190 /**
2191 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2192 * @ioa_cfg: ioa config struct
2193 * @dump: dump struct
2194 *
2195 * Return value:
2196 * nothing
2197 **/
2198 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2199 {
2200 unsigned long start_addr, sdt_word;
2201 unsigned long lock_flags = 0;
2202 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2203 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2204 u32 num_entries, start_off, end_off;
2205 u32 bytes_to_copy, bytes_copied, rc;
2206 struct ipr_sdt *sdt;
2207 int i;
2208
2209 ENTER;
2210
2211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2212
2213 if (ioa_cfg->sdt_state != GET_DUMP) {
2214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2215 return;
2216 }
2217
2218 start_addr = readl(ioa_cfg->ioa_mailbox);
2219
2220 if (!ipr_sdt_is_fmt2(start_addr)) {
2221 dev_err(&ioa_cfg->pdev->dev,
2222 "Invalid dump table format: %lx\n", start_addr);
2223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2224 return;
2225 }
2226
2227 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2228
2229 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2230
2231 /* Initialize the overall dump header */
2232 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2233 driver_dump->hdr.num_entries = 1;
2234 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2235 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2236 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2237 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2238
2239 ipr_dump_version_data(ioa_cfg, driver_dump);
2240 ipr_dump_location_data(ioa_cfg, driver_dump);
2241 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2242 ipr_dump_trace_data(ioa_cfg, driver_dump);
2243
2244 /* Update dump_header */
2245 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2246
2247 /* IOA Dump entry */
2248 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2249 ioa_dump->format = IPR_SDT_FMT2;
2250 ioa_dump->hdr.len = 0;
2251 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2252 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2253
2254 /* First entries in sdt are actually a list of dump addresses and
2255 lengths to gather the real dump data. sdt represents the pointer
2256 to the ioa generated dump table. Dump data will be extracted based
2257 on entries in this table */
2258 sdt = &ioa_dump->sdt;
2259
2260 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2261 sizeof(struct ipr_sdt) / sizeof(__be32));
2262
2263 /* Smart Dump table is ready to use and the first entry is valid */
2264 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2265 dev_err(&ioa_cfg->pdev->dev,
2266 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2267 rc, be32_to_cpu(sdt->hdr.state));
2268 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2269 ioa_cfg->sdt_state = DUMP_OBTAINED;
2270 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2271 return;
2272 }
2273
2274 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2275
2276 if (num_entries > IPR_NUM_SDT_ENTRIES)
2277 num_entries = IPR_NUM_SDT_ENTRIES;
2278
2279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2280
2281 for (i = 0; i < num_entries; i++) {
2282 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2283 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2284 break;
2285 }
2286
2287 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2288 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2289 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2290 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2291
2292 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2293 bytes_to_copy = end_off - start_off;
2294 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2295 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2296 continue;
2297 }
2298
2299 /* Copy data from adapter to driver buffers */
2300 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2301 bytes_to_copy);
2302
2303 ioa_dump->hdr.len += bytes_copied;
2304
2305 if (bytes_copied != bytes_to_copy) {
2306 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2307 break;
2308 }
2309 }
2310 }
2311 }
2312
2313 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2314
2315 /* Update dump_header */
2316 driver_dump->hdr.len += ioa_dump->hdr.len;
2317 wmb();
2318 ioa_cfg->sdt_state = DUMP_OBTAINED;
2319 LEAVE;
2320 }
2321
2322 #else
2323 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2324 #endif
2325
2326 /**
2327 * ipr_release_dump - Free adapter dump memory
2328 * @kref: kref struct
2329 *
2330 * Return value:
2331 * nothing
2332 **/
2333 static void ipr_release_dump(struct kref *kref)
2334 {
2335 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2336 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2337 unsigned long lock_flags = 0;
2338 int i;
2339
2340 ENTER;
2341 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2342 ioa_cfg->dump = NULL;
2343 ioa_cfg->sdt_state = INACTIVE;
2344 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2345
2346 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2347 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2348
2349 kfree(dump);
2350 LEAVE;
2351 }
2352
2353 /**
2354 * ipr_worker_thread - Worker thread
2355 * @work: ioa config struct
2356 *
2357 * Called at task level from a work thread. This function takes care
2358 * of adding and removing device from the mid-layer as configuration
2359 * changes are detected by the adapter.
2360 *
2361 * Return value:
2362 * nothing
2363 **/
2364 static void ipr_worker_thread(struct work_struct *work)
2365 {
2366 unsigned long lock_flags;
2367 struct ipr_resource_entry *res;
2368 struct scsi_device *sdev;
2369 struct ipr_dump *dump;
2370 struct ipr_ioa_cfg *ioa_cfg =
2371 container_of(work, struct ipr_ioa_cfg, work_q);
2372 u8 bus, target, lun;
2373 int did_work;
2374
2375 ENTER;
2376 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2377
2378 if (ioa_cfg->sdt_state == GET_DUMP) {
2379 dump = ioa_cfg->dump;
2380 if (!dump) {
2381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2382 return;
2383 }
2384 kref_get(&dump->kref);
2385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2386 ipr_get_ioa_dump(ioa_cfg, dump);
2387 kref_put(&dump->kref, ipr_release_dump);
2388
2389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2390 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2391 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2392 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2393 return;
2394 }
2395
2396 restart:
2397 do {
2398 did_work = 0;
2399 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2401 return;
2402 }
2403
2404 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2405 if (res->del_from_ml && res->sdev) {
2406 did_work = 1;
2407 sdev = res->sdev;
2408 if (!scsi_device_get(sdev)) {
2409 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2410 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2411 scsi_remove_device(sdev);
2412 scsi_device_put(sdev);
2413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2414 }
2415 break;
2416 }
2417 }
2418 } while(did_work);
2419
2420 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2421 if (res->add_to_ml) {
2422 bus = res->cfgte.res_addr.bus;
2423 target = res->cfgte.res_addr.target;
2424 lun = res->cfgte.res_addr.lun;
2425 res->add_to_ml = 0;
2426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2427 scsi_add_device(ioa_cfg->host, bus, target, lun);
2428 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2429 goto restart;
2430 }
2431 }
2432
2433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2434 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
2435 LEAVE;
2436 }
2437
2438 #ifdef CONFIG_SCSI_IPR_TRACE
2439 /**
2440 * ipr_read_trace - Dump the adapter trace
2441 * @kobj: kobject struct
2442 * @bin_attr: bin_attribute struct
2443 * @buf: buffer
2444 * @off: offset
2445 * @count: buffer size
2446 *
2447 * Return value:
2448 * number of bytes printed to buffer
2449 **/
2450 static ssize_t ipr_read_trace(struct kobject *kobj,
2451 struct bin_attribute *bin_attr,
2452 char *buf, loff_t off, size_t count)
2453 {
2454 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2455 struct Scsi_Host *shost = class_to_shost(cdev);
2456 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2457 unsigned long lock_flags = 0;
2458 int size = IPR_TRACE_SIZE;
2459 char *src = (char *)ioa_cfg->trace;
2460
2461 if (off > size)
2462 return 0;
2463 if (off + count > size) {
2464 size -= off;
2465 count = size;
2466 }
2467
2468 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2469 memcpy(buf, &src[off], count);
2470 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2471 return count;
2472 }
2473
2474 static struct bin_attribute ipr_trace_attr = {
2475 .attr = {
2476 .name = "trace",
2477 .mode = S_IRUGO,
2478 },
2479 .size = 0,
2480 .read = ipr_read_trace,
2481 };
2482 #endif
2483
2484 static const struct {
2485 enum ipr_cache_state state;
2486 char *name;
2487 } cache_state [] = {
2488 { CACHE_NONE, "none" },
2489 { CACHE_DISABLED, "disabled" },
2490 { CACHE_ENABLED, "enabled" }
2491 };
2492
2493 /**
2494 * ipr_show_write_caching - Show the write caching attribute
2495 * @class_dev: class device struct
2496 * @buf: buffer
2497 *
2498 * Return value:
2499 * number of bytes printed to buffer
2500 **/
2501 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2502 {
2503 struct Scsi_Host *shost = class_to_shost(class_dev);
2504 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2505 unsigned long lock_flags = 0;
2506 int i, len = 0;
2507
2508 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2509 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2510 if (cache_state[i].state == ioa_cfg->cache_state) {
2511 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2512 break;
2513 }
2514 }
2515 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2516 return len;
2517 }
2518
2519
2520 /**
2521 * ipr_store_write_caching - Enable/disable adapter write cache
2522 * @class_dev: class_device struct
2523 * @buf: buffer
2524 * @count: buffer size
2525 *
2526 * This function will enable/disable adapter write cache.
2527 *
2528 * Return value:
2529 * count on success / other on failure
2530 **/
2531 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2532 const char *buf, size_t count)
2533 {
2534 struct Scsi_Host *shost = class_to_shost(class_dev);
2535 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2536 unsigned long lock_flags = 0;
2537 enum ipr_cache_state new_state = CACHE_INVALID;
2538 int i;
2539
2540 if (!capable(CAP_SYS_ADMIN))
2541 return -EACCES;
2542 if (ioa_cfg->cache_state == CACHE_NONE)
2543 return -EINVAL;
2544
2545 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2546 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2547 new_state = cache_state[i].state;
2548 break;
2549 }
2550 }
2551
2552 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2553 return -EINVAL;
2554
2555 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2556 if (ioa_cfg->cache_state == new_state) {
2557 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2558 return count;
2559 }
2560
2561 ioa_cfg->cache_state = new_state;
2562 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2563 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2564 if (!ioa_cfg->in_reset_reload)
2565 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2567 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2568
2569 return count;
2570 }
2571
2572 static struct class_device_attribute ipr_ioa_cache_attr = {
2573 .attr = {
2574 .name = "write_cache",
2575 .mode = S_IRUGO | S_IWUSR,
2576 },
2577 .show = ipr_show_write_caching,
2578 .store = ipr_store_write_caching
2579 };
2580
2581 /**
2582 * ipr_show_fw_version - Show the firmware version
2583 * @class_dev: class device struct
2584 * @buf: buffer
2585 *
2586 * Return value:
2587 * number of bytes printed to buffer
2588 **/
2589 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2590 {
2591 struct Scsi_Host *shost = class_to_shost(class_dev);
2592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2593 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2594 unsigned long lock_flags = 0;
2595 int len;
2596
2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2598 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2599 ucode_vpd->major_release, ucode_vpd->card_type,
2600 ucode_vpd->minor_release[0],
2601 ucode_vpd->minor_release[1]);
2602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2603 return len;
2604 }
2605
2606 static struct class_device_attribute ipr_fw_version_attr = {
2607 .attr = {
2608 .name = "fw_version",
2609 .mode = S_IRUGO,
2610 },
2611 .show = ipr_show_fw_version,
2612 };
2613
2614 /**
2615 * ipr_show_log_level - Show the adapter's error logging level
2616 * @class_dev: class device struct
2617 * @buf: buffer
2618 *
2619 * Return value:
2620 * number of bytes printed to buffer
2621 **/
2622 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2623 {
2624 struct Scsi_Host *shost = class_to_shost(class_dev);
2625 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2626 unsigned long lock_flags = 0;
2627 int len;
2628
2629 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2630 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2631 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2632 return len;
2633 }
2634
2635 /**
2636 * ipr_store_log_level - Change the adapter's error logging level
2637 * @class_dev: class device struct
2638 * @buf: buffer
2639 *
2640 * Return value:
2641 * number of bytes printed to buffer
2642 **/
2643 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2644 const char *buf, size_t count)
2645 {
2646 struct Scsi_Host *shost = class_to_shost(class_dev);
2647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2648 unsigned long lock_flags = 0;
2649
2650 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2651 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2652 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2653 return strlen(buf);
2654 }
2655
2656 static struct class_device_attribute ipr_log_level_attr = {
2657 .attr = {
2658 .name = "log_level",
2659 .mode = S_IRUGO | S_IWUSR,
2660 },
2661 .show = ipr_show_log_level,
2662 .store = ipr_store_log_level
2663 };
2664
2665 /**
2666 * ipr_store_diagnostics - IOA Diagnostics interface
2667 * @class_dev: class_device struct
2668 * @buf: buffer
2669 * @count: buffer size
2670 *
2671 * This function will reset the adapter and wait a reasonable
2672 * amount of time for any errors that the adapter might log.
2673 *
2674 * Return value:
2675 * count on success / other on failure
2676 **/
2677 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2678 const char *buf, size_t count)
2679 {
2680 struct Scsi_Host *shost = class_to_shost(class_dev);
2681 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2682 unsigned long lock_flags = 0;
2683 int rc = count;
2684
2685 if (!capable(CAP_SYS_ADMIN))
2686 return -EACCES;
2687
2688 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2689 while(ioa_cfg->in_reset_reload) {
2690 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2691 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2692 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2693 }
2694
2695 ioa_cfg->errors_logged = 0;
2696 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2697
2698 if (ioa_cfg->in_reset_reload) {
2699 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2700 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2701
2702 /* Wait for a second for any errors to be logged */
2703 msleep(1000);
2704 } else {
2705 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2706 return -EIO;
2707 }
2708
2709 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2710 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2711 rc = -EIO;
2712 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2713
2714 return rc;
2715 }
2716
2717 static struct class_device_attribute ipr_diagnostics_attr = {
2718 .attr = {
2719 .name = "run_diagnostics",
2720 .mode = S_IWUSR,
2721 },
2722 .store = ipr_store_diagnostics
2723 };
2724
2725 /**
2726 * ipr_show_adapter_state - Show the adapter's state
2727 * @class_dev: class device struct
2728 * @buf: buffer
2729 *
2730 * Return value:
2731 * number of bytes printed to buffer
2732 **/
2733 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2734 {
2735 struct Scsi_Host *shost = class_to_shost(class_dev);
2736 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2737 unsigned long lock_flags = 0;
2738 int len;
2739
2740 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2741 if (ioa_cfg->ioa_is_dead)
2742 len = snprintf(buf, PAGE_SIZE, "offline\n");
2743 else
2744 len = snprintf(buf, PAGE_SIZE, "online\n");
2745 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2746 return len;
2747 }
2748
2749 /**
2750 * ipr_store_adapter_state - Change adapter state
2751 * @class_dev: class_device struct
2752 * @buf: buffer
2753 * @count: buffer size
2754 *
2755 * This function will change the adapter's state.
2756 *
2757 * Return value:
2758 * count on success / other on failure
2759 **/
2760 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2761 const char *buf, size_t count)
2762 {
2763 struct Scsi_Host *shost = class_to_shost(class_dev);
2764 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2765 unsigned long lock_flags;
2766 int result = count;
2767
2768 if (!capable(CAP_SYS_ADMIN))
2769 return -EACCES;
2770
2771 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2772 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2773 ioa_cfg->ioa_is_dead = 0;
2774 ioa_cfg->reset_retries = 0;
2775 ioa_cfg->in_ioa_bringdown = 0;
2776 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2777 }
2778 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2779 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2780
2781 return result;
2782 }
2783
2784 static struct class_device_attribute ipr_ioa_state_attr = {
2785 .attr = {
2786 .name = "state",
2787 .mode = S_IRUGO | S_IWUSR,
2788 },
2789 .show = ipr_show_adapter_state,
2790 .store = ipr_store_adapter_state
2791 };
2792
2793 /**
2794 * ipr_store_reset_adapter - Reset the adapter
2795 * @class_dev: class_device struct
2796 * @buf: buffer
2797 * @count: buffer size
2798 *
2799 * This function will reset the adapter.
2800 *
2801 * Return value:
2802 * count on success / other on failure
2803 **/
2804 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2805 const char *buf, size_t count)
2806 {
2807 struct Scsi_Host *shost = class_to_shost(class_dev);
2808 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2809 unsigned long lock_flags;
2810 int result = count;
2811
2812 if (!capable(CAP_SYS_ADMIN))
2813 return -EACCES;
2814
2815 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2816 if (!ioa_cfg->in_reset_reload)
2817 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2818 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2819 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2820
2821 return result;
2822 }
2823
2824 static struct class_device_attribute ipr_ioa_reset_attr = {
2825 .attr = {
2826 .name = "reset_host",
2827 .mode = S_IWUSR,
2828 },
2829 .store = ipr_store_reset_adapter
2830 };
2831
2832 /**
2833 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2834 * @buf_len: buffer length
2835 *
2836 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2837 * list to use for microcode download
2838 *
2839 * Return value:
2840 * pointer to sglist / NULL on failure
2841 **/
2842 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2843 {
2844 int sg_size, order, bsize_elem, num_elem, i, j;
2845 struct ipr_sglist *sglist;
2846 struct scatterlist *scatterlist;
2847 struct page *page;
2848
2849 /* Get the minimum size per scatter/gather element */
2850 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2851
2852 /* Get the actual size per element */
2853 order = get_order(sg_size);
2854
2855 /* Determine the actual number of bytes per element */
2856 bsize_elem = PAGE_SIZE * (1 << order);
2857
2858 /* Determine the actual number of sg entries needed */
2859 if (buf_len % bsize_elem)
2860 num_elem = (buf_len / bsize_elem) + 1;
2861 else
2862 num_elem = buf_len / bsize_elem;
2863
2864 /* Allocate a scatter/gather list for the DMA */
2865 sglist = kzalloc(sizeof(struct ipr_sglist) +
2866 (sizeof(struct scatterlist) * (num_elem - 1)),
2867 GFP_KERNEL);
2868
2869 if (sglist == NULL) {
2870 ipr_trace;
2871 return NULL;
2872 }
2873
2874 scatterlist = sglist->scatterlist;
2875 sg_init_table(scatterlist, num_elem);
2876
2877 sglist->order = order;
2878 sglist->num_sg = num_elem;
2879
2880 /* Allocate a bunch of sg elements */
2881 for (i = 0; i < num_elem; i++) {
2882 page = alloc_pages(GFP_KERNEL, order);
2883 if (!page) {
2884 ipr_trace;
2885
2886 /* Free up what we already allocated */
2887 for (j = i - 1; j >= 0; j--)
2888 __free_pages(sg_page(&scatterlist[j]), order);
2889 kfree(sglist);
2890 return NULL;
2891 }
2892
2893 sg_set_page(&scatterlist[i], page, 0, 0);
2894 }
2895
2896 return sglist;
2897 }
2898
2899 /**
2900 * ipr_free_ucode_buffer - Frees a microcode download buffer
2901 * @p_dnld: scatter/gather list pointer
2902 *
2903 * Free a DMA'able ucode download buffer previously allocated with
2904 * ipr_alloc_ucode_buffer
2905 *
2906 * Return value:
2907 * nothing
2908 **/
2909 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2910 {
2911 int i;
2912
2913 for (i = 0; i < sglist->num_sg; i++)
2914 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
2915
2916 kfree(sglist);
2917 }
2918
2919 /**
2920 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2921 * @sglist: scatter/gather list pointer
2922 * @buffer: buffer pointer
2923 * @len: buffer length
2924 *
2925 * Copy a microcode image from a user buffer into a buffer allocated by
2926 * ipr_alloc_ucode_buffer
2927 *
2928 * Return value:
2929 * 0 on success / other on failure
2930 **/
2931 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2932 u8 *buffer, u32 len)
2933 {
2934 int bsize_elem, i, result = 0;
2935 struct scatterlist *scatterlist;
2936 void *kaddr;
2937
2938 /* Determine the actual number of bytes per element */
2939 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2940
2941 scatterlist = sglist->scatterlist;
2942
2943 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2944 struct page *page = sg_page(&scatterlist[i]);
2945
2946 kaddr = kmap(page);
2947 memcpy(kaddr, buffer, bsize_elem);
2948 kunmap(page);
2949
2950 scatterlist[i].length = bsize_elem;
2951
2952 if (result != 0) {
2953 ipr_trace;
2954 return result;
2955 }
2956 }
2957
2958 if (len % bsize_elem) {
2959 struct page *page = sg_page(&scatterlist[i]);
2960
2961 kaddr = kmap(page);
2962 memcpy(kaddr, buffer, len % bsize_elem);
2963 kunmap(page);
2964
2965 scatterlist[i].length = len % bsize_elem;
2966 }
2967
2968 sglist->buffer_len = len;
2969 return result;
2970 }
2971
2972 /**
2973 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2974 * @ipr_cmd: ipr command struct
2975 * @sglist: scatter/gather list
2976 *
2977 * Builds a microcode download IOA data list (IOADL).
2978 *
2979 **/
2980 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2981 struct ipr_sglist *sglist)
2982 {
2983 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2984 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2985 struct scatterlist *scatterlist = sglist->scatterlist;
2986 int i;
2987
2988 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2989 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2990 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2991 ioarcb->write_ioadl_len =
2992 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2993
2994 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2995 ioadl[i].flags_and_data_len =
2996 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2997 ioadl[i].address =
2998 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2999 }
3000
3001 ioadl[i-1].flags_and_data_len |=
3002 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3003 }
3004
3005 /**
3006 * ipr_update_ioa_ucode - Update IOA's microcode
3007 * @ioa_cfg: ioa config struct
3008 * @sglist: scatter/gather list
3009 *
3010 * Initiate an adapter reset to update the IOA's microcode
3011 *
3012 * Return value:
3013 * 0 on success / -EIO on failure
3014 **/
3015 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3016 struct ipr_sglist *sglist)
3017 {
3018 unsigned long lock_flags;
3019
3020 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3021 while(ioa_cfg->in_reset_reload) {
3022 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3023 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3024 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3025 }
3026
3027 if (ioa_cfg->ucode_sglist) {
3028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3029 dev_err(&ioa_cfg->pdev->dev,
3030 "Microcode download already in progress\n");
3031 return -EIO;
3032 }
3033
3034 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3035 sglist->num_sg, DMA_TO_DEVICE);
3036
3037 if (!sglist->num_dma_sg) {
3038 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3039 dev_err(&ioa_cfg->pdev->dev,
3040 "Failed to map microcode download buffer!\n");
3041 return -EIO;
3042 }
3043
3044 ioa_cfg->ucode_sglist = sglist;
3045 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3047 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3048
3049 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3050 ioa_cfg->ucode_sglist = NULL;
3051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3052 return 0;
3053 }
3054
3055 /**
3056 * ipr_store_update_fw - Update the firmware on the adapter
3057 * @class_dev: class_device struct
3058 * @buf: buffer
3059 * @count: buffer size
3060 *
3061 * This function will update the firmware on the adapter.
3062 *
3063 * Return value:
3064 * count on success / other on failure
3065 **/
3066 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
3067 const char *buf, size_t count)
3068 {
3069 struct Scsi_Host *shost = class_to_shost(class_dev);
3070 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3071 struct ipr_ucode_image_header *image_hdr;
3072 const struct firmware *fw_entry;
3073 struct ipr_sglist *sglist;
3074 char fname[100];
3075 char *src;
3076 int len, result, dnld_size;
3077
3078 if (!capable(CAP_SYS_ADMIN))
3079 return -EACCES;
3080
3081 len = snprintf(fname, 99, "%s", buf);
3082 fname[len-1] = '\0';
3083
3084 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3085 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3086 return -EIO;
3087 }
3088
3089 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3090
3091 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3092 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3093 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3094 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3095 release_firmware(fw_entry);
3096 return -EINVAL;
3097 }
3098
3099 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3100 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3101 sglist = ipr_alloc_ucode_buffer(dnld_size);
3102
3103 if (!sglist) {
3104 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3105 release_firmware(fw_entry);
3106 return -ENOMEM;
3107 }
3108
3109 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3110
3111 if (result) {
3112 dev_err(&ioa_cfg->pdev->dev,
3113 "Microcode buffer copy to DMA buffer failed\n");
3114 goto out;
3115 }
3116
3117 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3118
3119 if (!result)
3120 result = count;
3121 out:
3122 ipr_free_ucode_buffer(sglist);
3123 release_firmware(fw_entry);
3124 return result;
3125 }
3126
3127 static struct class_device_attribute ipr_update_fw_attr = {
3128 .attr = {
3129 .name = "update_fw",
3130 .mode = S_IWUSR,
3131 },
3132 .store = ipr_store_update_fw
3133 };
3134
3135 static struct class_device_attribute *ipr_ioa_attrs[] = {
3136 &ipr_fw_version_attr,
3137 &ipr_log_level_attr,
3138 &ipr_diagnostics_attr,
3139 &ipr_ioa_state_attr,
3140 &ipr_ioa_reset_attr,
3141 &ipr_update_fw_attr,
3142 &ipr_ioa_cache_attr,
3143 NULL,
3144 };
3145
3146 #ifdef CONFIG_SCSI_IPR_DUMP
3147 /**
3148 * ipr_read_dump - Dump the adapter
3149 * @kobj: kobject struct
3150 * @bin_attr: bin_attribute struct
3151 * @buf: buffer
3152 * @off: offset
3153 * @count: buffer size
3154 *
3155 * Return value:
3156 * number of bytes printed to buffer
3157 **/
3158 static ssize_t ipr_read_dump(struct kobject *kobj,
3159 struct bin_attribute *bin_attr,
3160 char *buf, loff_t off, size_t count)
3161 {
3162 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3163 struct Scsi_Host *shost = class_to_shost(cdev);
3164 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3165 struct ipr_dump *dump;
3166 unsigned long lock_flags = 0;
3167 char *src;
3168 int len;
3169 size_t rc = count;
3170
3171 if (!capable(CAP_SYS_ADMIN))
3172 return -EACCES;
3173
3174 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3175 dump = ioa_cfg->dump;
3176
3177 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3179 return 0;
3180 }
3181 kref_get(&dump->kref);
3182 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3183
3184 if (off > dump->driver_dump.hdr.len) {
3185 kref_put(&dump->kref, ipr_release_dump);
3186 return 0;
3187 }
3188
3189 if (off + count > dump->driver_dump.hdr.len) {
3190 count = dump->driver_dump.hdr.len - off;
3191 rc = count;
3192 }
3193
3194 if (count && off < sizeof(dump->driver_dump)) {
3195 if (off + count > sizeof(dump->driver_dump))
3196 len = sizeof(dump->driver_dump) - off;
3197 else
3198 len = count;
3199 src = (u8 *)&dump->driver_dump + off;
3200 memcpy(buf, src, len);
3201 buf += len;
3202 off += len;
3203 count -= len;
3204 }
3205
3206 off -= sizeof(dump->driver_dump);
3207
3208 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3209 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3210 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3211 else
3212 len = count;
3213 src = (u8 *)&dump->ioa_dump + off;
3214 memcpy(buf, src, len);
3215 buf += len;
3216 off += len;
3217 count -= len;
3218 }
3219
3220 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3221
3222 while (count) {
3223 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3224 len = PAGE_ALIGN(off) - off;
3225 else
3226 len = count;
3227 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3228 src += off & ~PAGE_MASK;
3229 memcpy(buf, src, len);
3230 buf += len;
3231 off += len;
3232 count -= len;
3233 }
3234
3235 kref_put(&dump->kref, ipr_release_dump);
3236 return rc;
3237 }
3238
3239 /**
3240 * ipr_alloc_dump - Prepare for adapter dump
3241 * @ioa_cfg: ioa config struct
3242 *
3243 * Return value:
3244 * 0 on success / other on failure
3245 **/
3246 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3247 {
3248 struct ipr_dump *dump;
3249 unsigned long lock_flags = 0;
3250
3251 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3252
3253 if (!dump) {
3254 ipr_err("Dump memory allocation failed\n");
3255 return -ENOMEM;
3256 }
3257
3258 kref_init(&dump->kref);
3259 dump->ioa_cfg = ioa_cfg;
3260
3261 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3262
3263 if (INACTIVE != ioa_cfg->sdt_state) {
3264 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3265 kfree(dump);
3266 return 0;
3267 }
3268
3269 ioa_cfg->dump = dump;
3270 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3271 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3272 ioa_cfg->dump_taken = 1;
3273 schedule_work(&ioa_cfg->work_q);
3274 }
3275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3276
3277 return 0;
3278 }
3279
3280 /**
3281 * ipr_free_dump - Free adapter dump memory
3282 * @ioa_cfg: ioa config struct
3283 *
3284 * Return value:
3285 * 0 on success / other on failure
3286 **/
3287 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3288 {
3289 struct ipr_dump *dump;
3290 unsigned long lock_flags = 0;
3291
3292 ENTER;
3293
3294 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3295 dump = ioa_cfg->dump;
3296 if (!dump) {
3297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3298 return 0;
3299 }
3300
3301 ioa_cfg->dump = NULL;
3302 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3303
3304 kref_put(&dump->kref, ipr_release_dump);
3305
3306 LEAVE;
3307 return 0;
3308 }
3309
3310 /**
3311 * ipr_write_dump - Setup dump state of adapter
3312 * @kobj: kobject struct
3313 * @bin_attr: bin_attribute struct
3314 * @buf: buffer
3315 * @off: offset
3316 * @count: buffer size
3317 *
3318 * Return value:
3319 * number of bytes printed to buffer
3320 **/
3321 static ssize_t ipr_write_dump(struct kobject *kobj,
3322 struct bin_attribute *bin_attr,
3323 char *buf, loff_t off, size_t count)
3324 {
3325 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3326 struct Scsi_Host *shost = class_to_shost(cdev);
3327 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3328 int rc;
3329
3330 if (!capable(CAP_SYS_ADMIN))
3331 return -EACCES;
3332
3333 if (buf[0] == '1')
3334 rc = ipr_alloc_dump(ioa_cfg);
3335 else if (buf[0] == '0')
3336 rc = ipr_free_dump(ioa_cfg);
3337 else
3338 return -EINVAL;
3339
3340 if (rc)
3341 return rc;
3342 else
3343 return count;
3344 }
3345
3346 static struct bin_attribute ipr_dump_attr = {
3347 .attr = {
3348 .name = "dump",
3349 .mode = S_IRUSR | S_IWUSR,
3350 },
3351 .size = 0,
3352 .read = ipr_read_dump,
3353 .write = ipr_write_dump
3354 };
3355 #else
3356 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3357 #endif
3358
3359 /**
3360 * ipr_change_queue_depth - Change the device's queue depth
3361 * @sdev: scsi device struct
3362 * @qdepth: depth to set
3363 *
3364 * Return value:
3365 * actual depth set
3366 **/
3367 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3368 {
3369 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3370 struct ipr_resource_entry *res;
3371 unsigned long lock_flags = 0;
3372
3373 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3374 res = (struct ipr_resource_entry *)sdev->hostdata;
3375
3376 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3377 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3378 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3379
3380 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3381 return sdev->queue_depth;
3382 }
3383
3384 /**
3385 * ipr_change_queue_type - Change the device's queue type
3386 * @dsev: scsi device struct
3387 * @tag_type: type of tags to use
3388 *
3389 * Return value:
3390 * actual queue type set
3391 **/
3392 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3393 {
3394 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3395 struct ipr_resource_entry *res;
3396 unsigned long lock_flags = 0;
3397
3398 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3399 res = (struct ipr_resource_entry *)sdev->hostdata;
3400
3401 if (res) {
3402 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3403 /*
3404 * We don't bother quiescing the device here since the
3405 * adapter firmware does it for us.
3406 */
3407 scsi_set_tag_type(sdev, tag_type);
3408
3409 if (tag_type)
3410 scsi_activate_tcq(sdev, sdev->queue_depth);
3411 else
3412 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3413 } else
3414 tag_type = 0;
3415 } else
3416 tag_type = 0;
3417
3418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3419 return tag_type;
3420 }
3421
3422 /**
3423 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3424 * @dev: device struct
3425 * @buf: buffer
3426 *
3427 * Return value:
3428 * number of bytes printed to buffer
3429 **/
3430 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3431 {
3432 struct scsi_device *sdev = to_scsi_device(dev);
3433 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3434 struct ipr_resource_entry *res;
3435 unsigned long lock_flags = 0;
3436 ssize_t len = -ENXIO;
3437
3438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3439 res = (struct ipr_resource_entry *)sdev->hostdata;
3440 if (res)
3441 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3442 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3443 return len;
3444 }
3445
3446 static struct device_attribute ipr_adapter_handle_attr = {
3447 .attr = {
3448 .name = "adapter_handle",
3449 .mode = S_IRUSR,
3450 },
3451 .show = ipr_show_adapter_handle
3452 };
3453
3454 static struct device_attribute *ipr_dev_attrs[] = {
3455 &ipr_adapter_handle_attr,
3456 NULL,
3457 };
3458
3459 /**
3460 * ipr_biosparam - Return the HSC mapping
3461 * @sdev: scsi device struct
3462 * @block_device: block device pointer
3463 * @capacity: capacity of the device
3464 * @parm: Array containing returned HSC values.
3465 *
3466 * This function generates the HSC parms that fdisk uses.
3467 * We want to make sure we return something that places partitions
3468 * on 4k boundaries for best performance with the IOA.
3469 *
3470 * Return value:
3471 * 0 on success
3472 **/
3473 static int ipr_biosparam(struct scsi_device *sdev,
3474 struct block_device *block_device,
3475 sector_t capacity, int *parm)
3476 {
3477 int heads, sectors;
3478 sector_t cylinders;
3479
3480 heads = 128;
3481 sectors = 32;
3482
3483 cylinders = capacity;
3484 sector_div(cylinders, (128 * 32));
3485
3486 /* return result */
3487 parm[0] = heads;
3488 parm[1] = sectors;
3489 parm[2] = cylinders;
3490
3491 return 0;
3492 }
3493
3494 /**
3495 * ipr_find_starget - Find target based on bus/target.
3496 * @starget: scsi target struct
3497 *
3498 * Return value:
3499 * resource entry pointer if found / NULL if not found
3500 **/
3501 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3502 {
3503 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3504 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3505 struct ipr_resource_entry *res;
3506
3507 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3508 if ((res->cfgte.res_addr.bus == starget->channel) &&
3509 (res->cfgte.res_addr.target == starget->id) &&
3510 (res->cfgte.res_addr.lun == 0)) {
3511 return res;
3512 }
3513 }
3514
3515 return NULL;
3516 }
3517
3518 static struct ata_port_info sata_port_info;
3519
3520 /**
3521 * ipr_target_alloc - Prepare for commands to a SCSI target
3522 * @starget: scsi target struct
3523 *
3524 * If the device is a SATA device, this function allocates an
3525 * ATA port with libata, else it does nothing.
3526 *
3527 * Return value:
3528 * 0 on success / non-0 on failure
3529 **/
3530 static int ipr_target_alloc(struct scsi_target *starget)
3531 {
3532 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3533 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3534 struct ipr_sata_port *sata_port;
3535 struct ata_port *ap;
3536 struct ipr_resource_entry *res;
3537 unsigned long lock_flags;
3538
3539 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3540 res = ipr_find_starget(starget);
3541 starget->hostdata = NULL;
3542
3543 if (res && ipr_is_gata(res)) {
3544 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3545 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3546 if (!sata_port)
3547 return -ENOMEM;
3548
3549 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3550 if (ap) {
3551 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3552 sata_port->ioa_cfg = ioa_cfg;
3553 sata_port->ap = ap;
3554 sata_port->res = res;
3555
3556 res->sata_port = sata_port;
3557 ap->private_data = sata_port;
3558 starget->hostdata = sata_port;
3559 } else {
3560 kfree(sata_port);
3561 return -ENOMEM;
3562 }
3563 }
3564 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3565
3566 return 0;
3567 }
3568
3569 /**
3570 * ipr_target_destroy - Destroy a SCSI target
3571 * @starget: scsi target struct
3572 *
3573 * If the device was a SATA device, this function frees the libata
3574 * ATA port, else it does nothing.
3575 *
3576 **/
3577 static void ipr_target_destroy(struct scsi_target *starget)
3578 {
3579 struct ipr_sata_port *sata_port = starget->hostdata;
3580
3581 if (sata_port) {
3582 starget->hostdata = NULL;
3583 ata_sas_port_destroy(sata_port->ap);
3584 kfree(sata_port);
3585 }
3586 }
3587
3588 /**
3589 * ipr_find_sdev - Find device based on bus/target/lun.
3590 * @sdev: scsi device struct
3591 *
3592 * Return value:
3593 * resource entry pointer if found / NULL if not found
3594 **/
3595 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3596 {
3597 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3598 struct ipr_resource_entry *res;
3599
3600 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3601 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3602 (res->cfgte.res_addr.target == sdev->id) &&
3603 (res->cfgte.res_addr.lun == sdev->lun))
3604 return res;
3605 }
3606
3607 return NULL;
3608 }
3609
3610 /**
3611 * ipr_slave_destroy - Unconfigure a SCSI device
3612 * @sdev: scsi device struct
3613 *
3614 * Return value:
3615 * nothing
3616 **/
3617 static void ipr_slave_destroy(struct scsi_device *sdev)
3618 {
3619 struct ipr_resource_entry *res;
3620 struct ipr_ioa_cfg *ioa_cfg;
3621 unsigned long lock_flags = 0;
3622
3623 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3624
3625 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3626 res = (struct ipr_resource_entry *) sdev->hostdata;
3627 if (res) {
3628 if (res->sata_port)
3629 ata_port_disable(res->sata_port->ap);
3630 sdev->hostdata = NULL;
3631 res->sdev = NULL;
3632 res->sata_port = NULL;
3633 }
3634 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3635 }
3636
3637 /**
3638 * ipr_slave_configure - Configure a SCSI device
3639 * @sdev: scsi device struct
3640 *
3641 * This function configures the specified scsi device.
3642 *
3643 * Return value:
3644 * 0 on success
3645 **/
3646 static int ipr_slave_configure(struct scsi_device *sdev)
3647 {
3648 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3649 struct ipr_resource_entry *res;
3650 unsigned long lock_flags = 0;
3651
3652 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3653 res = sdev->hostdata;
3654 if (res) {
3655 if (ipr_is_af_dasd_device(res))
3656 sdev->type = TYPE_RAID;
3657 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3658 sdev->scsi_level = 4;
3659 sdev->no_uld_attach = 1;
3660 }
3661 if (ipr_is_vset_device(res)) {
3662 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3663 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3664 }
3665 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3666 sdev->allow_restart = 1;
3667 if (ipr_is_gata(res) && res->sata_port) {
3668 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3669 ata_sas_slave_configure(sdev, res->sata_port->ap);
3670 } else {
3671 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3672 }
3673 }
3674 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3675 return 0;
3676 }
3677
3678 /**
3679 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3680 * @sdev: scsi device struct
3681 *
3682 * This function initializes an ATA port so that future commands
3683 * sent through queuecommand will work.
3684 *
3685 * Return value:
3686 * 0 on success
3687 **/
3688 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3689 {
3690 struct ipr_sata_port *sata_port = NULL;
3691 int rc = -ENXIO;
3692
3693 ENTER;
3694 if (sdev->sdev_target)
3695 sata_port = sdev->sdev_target->hostdata;
3696 if (sata_port)
3697 rc = ata_sas_port_init(sata_port->ap);
3698 if (rc)
3699 ipr_slave_destroy(sdev);
3700
3701 LEAVE;
3702 return rc;
3703 }
3704
3705 /**
3706 * ipr_slave_alloc - Prepare for commands to a device.
3707 * @sdev: scsi device struct
3708 *
3709 * This function saves a pointer to the resource entry
3710 * in the scsi device struct if the device exists. We
3711 * can then use this pointer in ipr_queuecommand when
3712 * handling new commands.
3713 *
3714 * Return value:
3715 * 0 on success / -ENXIO if device does not exist
3716 **/
3717 static int ipr_slave_alloc(struct scsi_device *sdev)
3718 {
3719 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3720 struct ipr_resource_entry *res;
3721 unsigned long lock_flags;
3722 int rc = -ENXIO;
3723
3724 sdev->hostdata = NULL;
3725
3726 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3727
3728 res = ipr_find_sdev(sdev);
3729 if (res) {
3730 res->sdev = sdev;
3731 res->add_to_ml = 0;
3732 res->in_erp = 0;
3733 sdev->hostdata = res;
3734 if (!ipr_is_naca_model(res))
3735 res->needs_sync_complete = 1;
3736 rc = 0;
3737 if (ipr_is_gata(res)) {
3738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3739 return ipr_ata_slave_alloc(sdev);
3740 }
3741 }
3742
3743 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3744
3745 return rc;
3746 }
3747
3748 /**
3749 * ipr_eh_host_reset - Reset the host adapter
3750 * @scsi_cmd: scsi command struct
3751 *
3752 * Return value:
3753 * SUCCESS / FAILED
3754 **/
3755 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3756 {
3757 struct ipr_ioa_cfg *ioa_cfg;
3758 int rc;
3759
3760 ENTER;
3761 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3762
3763 dev_err(&ioa_cfg->pdev->dev,
3764 "Adapter being reset as a result of error recovery.\n");
3765
3766 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3767 ioa_cfg->sdt_state = GET_DUMP;
3768
3769 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3770
3771 LEAVE;
3772 return rc;
3773 }
3774
3775 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3776 {
3777 int rc;
3778
3779 spin_lock_irq(cmd->device->host->host_lock);
3780 rc = __ipr_eh_host_reset(cmd);
3781 spin_unlock_irq(cmd->device->host->host_lock);
3782
3783 return rc;
3784 }
3785
3786 /**
3787 * ipr_device_reset - Reset the device
3788 * @ioa_cfg: ioa config struct
3789 * @res: resource entry struct
3790 *
3791 * This function issues a device reset to the affected device.
3792 * If the device is a SCSI device, a LUN reset will be sent
3793 * to the device first. If that does not work, a target reset
3794 * will be sent. If the device is a SATA device, a PHY reset will
3795 * be sent.
3796 *
3797 * Return value:
3798 * 0 on success / non-zero on failure
3799 **/
3800 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3801 struct ipr_resource_entry *res)
3802 {
3803 struct ipr_cmnd *ipr_cmd;
3804 struct ipr_ioarcb *ioarcb;
3805 struct ipr_cmd_pkt *cmd_pkt;
3806 struct ipr_ioarcb_ata_regs *regs;
3807 u32 ioasc;
3808
3809 ENTER;
3810 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3811 ioarcb = &ipr_cmd->ioarcb;
3812 cmd_pkt = &ioarcb->cmd_pkt;
3813 regs = &ioarcb->add_data.u.regs;
3814
3815 ioarcb->res_handle = res->cfgte.res_handle;
3816 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3817 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3818 if (ipr_is_gata(res)) {
3819 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3820 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3821 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3822 }
3823
3824 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3825 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3826 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3827 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3828 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3829 sizeof(struct ipr_ioasa_gata));
3830
3831 LEAVE;
3832 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3833 }
3834
3835 /**
3836 * ipr_sata_reset - Reset the SATA port
3837 * @link: SATA link to reset
3838 * @classes: class of the attached device
3839 *
3840 * This function issues a SATA phy reset to the affected ATA link.
3841 *
3842 * Return value:
3843 * 0 on success / non-zero on failure
3844 **/
3845 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
3846 unsigned long deadline)
3847 {
3848 struct ipr_sata_port *sata_port = link->ap->private_data;
3849 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3850 struct ipr_resource_entry *res;
3851 unsigned long lock_flags = 0;
3852 int rc = -ENXIO;
3853
3854 ENTER;
3855 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3856 while(ioa_cfg->in_reset_reload) {
3857 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3858 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3859 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3860 }
3861
3862 res = sata_port->res;
3863 if (res) {
3864 rc = ipr_device_reset(ioa_cfg, res);
3865 switch(res->cfgte.proto) {
3866 case IPR_PROTO_SATA:
3867 case IPR_PROTO_SAS_STP:
3868 *classes = ATA_DEV_ATA;
3869 break;
3870 case IPR_PROTO_SATA_ATAPI:
3871 case IPR_PROTO_SAS_STP_ATAPI:
3872 *classes = ATA_DEV_ATAPI;
3873 break;
3874 default:
3875 *classes = ATA_DEV_UNKNOWN;
3876 break;
3877 };
3878 }
3879
3880 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3881 LEAVE;
3882 return rc;
3883 }
3884
3885 /**
3886 * ipr_eh_dev_reset - Reset the device
3887 * @scsi_cmd: scsi command struct
3888 *
3889 * This function issues a device reset to the affected device.
3890 * A LUN reset will be sent to the device first. If that does
3891 * not work, a target reset will be sent.
3892 *
3893 * Return value:
3894 * SUCCESS / FAILED
3895 **/
3896 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3897 {
3898 struct ipr_cmnd *ipr_cmd;
3899 struct ipr_ioa_cfg *ioa_cfg;
3900 struct ipr_resource_entry *res;
3901 struct ata_port *ap;
3902 int rc = 0;
3903
3904 ENTER;
3905 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3906 res = scsi_cmd->device->hostdata;
3907
3908 if (!res)
3909 return FAILED;
3910
3911 /*
3912 * If we are currently going through reset/reload, return failed. This will force the
3913 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3914 * reset to complete
3915 */
3916 if (ioa_cfg->in_reset_reload)
3917 return FAILED;
3918 if (ioa_cfg->ioa_is_dead)
3919 return FAILED;
3920
3921 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3922 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3923 if (ipr_cmd->scsi_cmd)
3924 ipr_cmd->done = ipr_scsi_eh_done;
3925 if (ipr_cmd->qc)
3926 ipr_cmd->done = ipr_sata_eh_done;
3927 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3928 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3929 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3930 }
3931 }
3932 }
3933
3934 res->resetting_device = 1;
3935 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3936
3937 if (ipr_is_gata(res) && res->sata_port) {
3938 ap = res->sata_port->ap;
3939 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3940 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3941 spin_lock_irq(scsi_cmd->device->host->host_lock);
3942
3943 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3944 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3945 rc = -EIO;
3946 break;
3947 }
3948 }
3949 } else
3950 rc = ipr_device_reset(ioa_cfg, res);
3951 res->resetting_device = 0;
3952
3953 LEAVE;
3954 return (rc ? FAILED : SUCCESS);
3955 }
3956
3957 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3958 {
3959 int rc;
3960
3961 spin_lock_irq(cmd->device->host->host_lock);
3962 rc = __ipr_eh_dev_reset(cmd);
3963 spin_unlock_irq(cmd->device->host->host_lock);
3964
3965 return rc;
3966 }
3967
3968 /**
3969 * ipr_bus_reset_done - Op done function for bus reset.
3970 * @ipr_cmd: ipr command struct
3971 *
3972 * This function is the op done function for a bus reset
3973 *
3974 * Return value:
3975 * none
3976 **/
3977 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3978 {
3979 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3980 struct ipr_resource_entry *res;
3981
3982 ENTER;
3983 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3984 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3985 sizeof(res->cfgte.res_handle))) {
3986 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3987 break;
3988 }
3989 }
3990
3991 /*
3992 * If abort has not completed, indicate the reset has, else call the
3993 * abort's done function to wake the sleeping eh thread
3994 */
3995 if (ipr_cmd->sibling->sibling)
3996 ipr_cmd->sibling->sibling = NULL;
3997 else
3998 ipr_cmd->sibling->done(ipr_cmd->sibling);
3999
4000 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4001 LEAVE;
4002 }
4003
4004 /**
4005 * ipr_abort_timeout - An abort task has timed out
4006 * @ipr_cmd: ipr command struct
4007 *
4008 * This function handles when an abort task times out. If this
4009 * happens we issue a bus reset since we have resources tied
4010 * up that must be freed before returning to the midlayer.
4011 *
4012 * Return value:
4013 * none
4014 **/
4015 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4016 {
4017 struct ipr_cmnd *reset_cmd;
4018 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4019 struct ipr_cmd_pkt *cmd_pkt;
4020 unsigned long lock_flags = 0;
4021
4022 ENTER;
4023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4024 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4026 return;
4027 }
4028
4029 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4030 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4031 ipr_cmd->sibling = reset_cmd;
4032 reset_cmd->sibling = ipr_cmd;
4033 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4034 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4035 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4036 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4037 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4038
4039 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4040 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4041 LEAVE;
4042 }
4043
4044 /**
4045 * ipr_cancel_op - Cancel specified op
4046 * @scsi_cmd: scsi command struct
4047 *
4048 * This function cancels specified op.
4049 *
4050 * Return value:
4051 * SUCCESS / FAILED
4052 **/
4053 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4054 {
4055 struct ipr_cmnd *ipr_cmd;
4056 struct ipr_ioa_cfg *ioa_cfg;
4057 struct ipr_resource_entry *res;
4058 struct ipr_cmd_pkt *cmd_pkt;
4059 u32 ioasc;
4060 int op_found = 0;
4061
4062 ENTER;
4063 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4064 res = scsi_cmd->device->hostdata;
4065
4066 /* If we are currently going through reset/reload, return failed.
4067 * This will force the mid-layer to call ipr_eh_host_reset,
4068 * which will then go to sleep and wait for the reset to complete
4069 */
4070 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4071 return FAILED;
4072 if (!res || !ipr_is_gscsi(res))
4073 return FAILED;
4074
4075 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4076 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4077 ipr_cmd->done = ipr_scsi_eh_done;
4078 op_found = 1;
4079 break;
4080 }
4081 }
4082
4083 if (!op_found)
4084 return SUCCESS;
4085
4086 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4087 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4088 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4089 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4090 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4091 ipr_cmd->u.sdev = scsi_cmd->device;
4092
4093 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4094 scsi_cmd->cmnd[0]);
4095 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4096 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4097
4098 /*
4099 * If the abort task timed out and we sent a bus reset, we will get
4100 * one the following responses to the abort
4101 */
4102 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4103 ioasc = 0;
4104 ipr_trace;
4105 }
4106
4107 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4108 if (!ipr_is_naca_model(res))
4109 res->needs_sync_complete = 1;
4110
4111 LEAVE;
4112 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4113 }
4114
4115 /**
4116 * ipr_eh_abort - Abort a single op
4117 * @scsi_cmd: scsi command struct
4118 *
4119 * Return value:
4120 * SUCCESS / FAILED
4121 **/
4122 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4123 {
4124 unsigned long flags;
4125 int rc;
4126
4127 ENTER;
4128
4129 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4130 rc = ipr_cancel_op(scsi_cmd);
4131 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4132
4133 LEAVE;
4134 return rc;
4135 }
4136
4137 /**
4138 * ipr_handle_other_interrupt - Handle "other" interrupts
4139 * @ioa_cfg: ioa config struct
4140 * @int_reg: interrupt register
4141 *
4142 * Return value:
4143 * IRQ_NONE / IRQ_HANDLED
4144 **/
4145 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4146 volatile u32 int_reg)
4147 {
4148 irqreturn_t rc = IRQ_HANDLED;
4149
4150 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4151 /* Mask the interrupt */
4152 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4153
4154 /* Clear the interrupt */
4155 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4156 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4157
4158 list_del(&ioa_cfg->reset_cmd->queue);
4159 del_timer(&ioa_cfg->reset_cmd->timer);
4160 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4161 } else {
4162 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4163 ioa_cfg->ioa_unit_checked = 1;
4164 else
4165 dev_err(&ioa_cfg->pdev->dev,
4166 "Permanent IOA failure. 0x%08X\n", int_reg);
4167
4168 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4169 ioa_cfg->sdt_state = GET_DUMP;
4170
4171 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4172 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4173 }
4174
4175 return rc;
4176 }
4177
4178 /**
4179 * ipr_isr - Interrupt service routine
4180 * @irq: irq number
4181 * @devp: pointer to ioa config struct
4182 *
4183 * Return value:
4184 * IRQ_NONE / IRQ_HANDLED
4185 **/
4186 static irqreturn_t ipr_isr(int irq, void *devp)
4187 {
4188 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4189 unsigned long lock_flags = 0;
4190 volatile u32 int_reg, int_mask_reg;
4191 u32 ioasc;
4192 u16 cmd_index;
4193 struct ipr_cmnd *ipr_cmd;
4194 irqreturn_t rc = IRQ_NONE;
4195
4196 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4197
4198 /* If interrupts are disabled, ignore the interrupt */
4199 if (!ioa_cfg->allow_interrupts) {
4200 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4201 return IRQ_NONE;
4202 }
4203
4204 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4205 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4206
4207 /* If an interrupt on the adapter did not occur, ignore it */
4208 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4209 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4210 return IRQ_NONE;
4211 }
4212
4213 while (1) {
4214 ipr_cmd = NULL;
4215
4216 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4217 ioa_cfg->toggle_bit) {
4218
4219 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4220 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4221
4222 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4223 ioa_cfg->errors_logged++;
4224 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4225
4226 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4227 ioa_cfg->sdt_state = GET_DUMP;
4228
4229 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4230 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4231 return IRQ_HANDLED;
4232 }
4233
4234 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4235
4236 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4237
4238 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4239
4240 list_del(&ipr_cmd->queue);
4241 del_timer(&ipr_cmd->timer);
4242 ipr_cmd->done(ipr_cmd);
4243
4244 rc = IRQ_HANDLED;
4245
4246 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4247 ioa_cfg->hrrq_curr++;
4248 } else {
4249 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4250 ioa_cfg->toggle_bit ^= 1u;
4251 }
4252 }
4253
4254 if (ipr_cmd != NULL) {
4255 /* Clear the PCI interrupt */
4256 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4257 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4258 } else
4259 break;
4260 }
4261
4262 if (unlikely(rc == IRQ_NONE))
4263 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4264
4265 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4266 return rc;
4267 }
4268
4269 /**
4270 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4271 * @ioa_cfg: ioa config struct
4272 * @ipr_cmd: ipr command struct
4273 *
4274 * Return value:
4275 * 0 on success / -1 on failure
4276 **/
4277 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4278 struct ipr_cmnd *ipr_cmd)
4279 {
4280 int i, nseg;
4281 struct scatterlist *sg;
4282 u32 length;
4283 u32 ioadl_flags = 0;
4284 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4285 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4286 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4287
4288 length = scsi_bufflen(scsi_cmd);
4289 if (!length)
4290 return 0;
4291
4292 nseg = scsi_dma_map(scsi_cmd);
4293 if (nseg < 0) {
4294 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4295 return -1;
4296 }
4297
4298 ipr_cmd->dma_use_sg = nseg;
4299
4300 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4301 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4302 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4303 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4304 ioarcb->write_ioadl_len =
4305 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4306 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4307 ioadl_flags = IPR_IOADL_FLAGS_READ;
4308 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4309 ioarcb->read_ioadl_len =
4310 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4311 }
4312
4313 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4314 ioadl = ioarcb->add_data.u.ioadl;
4315 ioarcb->write_ioadl_addr =
4316 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4317 offsetof(struct ipr_ioarcb, add_data));
4318 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4319 }
4320
4321 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4322 ioadl[i].flags_and_data_len =
4323 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4324 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
4325 }
4326
4327 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4328 return 0;
4329 }
4330
4331 /**
4332 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4333 * @scsi_cmd: scsi command struct
4334 *
4335 * Return value:
4336 * task attributes
4337 **/
4338 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4339 {
4340 u8 tag[2];
4341 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4342
4343 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4344 switch (tag[0]) {
4345 case MSG_SIMPLE_TAG:
4346 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4347 break;
4348 case MSG_HEAD_TAG:
4349 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4350 break;
4351 case MSG_ORDERED_TAG:
4352 rc = IPR_FLAGS_LO_ORDERED_TASK;
4353 break;
4354 };
4355 }
4356
4357 return rc;
4358 }
4359
4360 /**
4361 * ipr_erp_done - Process completion of ERP for a device
4362 * @ipr_cmd: ipr command struct
4363 *
4364 * This function copies the sense buffer into the scsi_cmd
4365 * struct and pushes the scsi_done function.
4366 *
4367 * Return value:
4368 * nothing
4369 **/
4370 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4371 {
4372 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4373 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4374 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4375 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4376
4377 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4378 scsi_cmd->result |= (DID_ERROR << 16);
4379 scmd_printk(KERN_ERR, scsi_cmd,
4380 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4381 } else {
4382 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4383 SCSI_SENSE_BUFFERSIZE);
4384 }
4385
4386 if (res) {
4387 if (!ipr_is_naca_model(res))
4388 res->needs_sync_complete = 1;
4389 res->in_erp = 0;
4390 }
4391 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4392 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4393 scsi_cmd->scsi_done(scsi_cmd);
4394 }
4395
4396 /**
4397 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4398 * @ipr_cmd: ipr command struct
4399 *
4400 * Return value:
4401 * none
4402 **/
4403 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4404 {
4405 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4406 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4407 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
4408
4409 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4410 ioarcb->write_data_transfer_length = 0;
4411 ioarcb->read_data_transfer_length = 0;
4412 ioarcb->write_ioadl_len = 0;
4413 ioarcb->read_ioadl_len = 0;
4414 ioasa->ioasc = 0;
4415 ioasa->residual_data_len = 0;
4416 ioarcb->write_ioadl_addr =
4417 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4418 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4419 }
4420
4421 /**
4422 * ipr_erp_request_sense - Send request sense to a device
4423 * @ipr_cmd: ipr command struct
4424 *
4425 * This function sends a request sense to a device as a result
4426 * of a check condition.
4427 *
4428 * Return value:
4429 * nothing
4430 **/
4431 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4432 {
4433 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4434 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4435
4436 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4437 ipr_erp_done(ipr_cmd);
4438 return;
4439 }
4440
4441 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4442
4443 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4444 cmd_pkt->cdb[0] = REQUEST_SENSE;
4445 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4446 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4447 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4448 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4449
4450 ipr_cmd->ioadl[0].flags_and_data_len =
4451 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4452 ipr_cmd->ioadl[0].address =
4453 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4454
4455 ipr_cmd->ioarcb.read_ioadl_len =
4456 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4457 ipr_cmd->ioarcb.read_data_transfer_length =
4458 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4459
4460 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4461 IPR_REQUEST_SENSE_TIMEOUT * 2);
4462 }
4463
4464 /**
4465 * ipr_erp_cancel_all - Send cancel all to a device
4466 * @ipr_cmd: ipr command struct
4467 *
4468 * This function sends a cancel all to a device to clear the
4469 * queue. If we are running TCQ on the device, QERR is set to 1,
4470 * which means all outstanding ops have been dropped on the floor.
4471 * Cancel all will return them to us.
4472 *
4473 * Return value:
4474 * nothing
4475 **/
4476 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4477 {
4478 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4479 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4480 struct ipr_cmd_pkt *cmd_pkt;
4481
4482 res->in_erp = 1;
4483
4484 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4485
4486 if (!scsi_get_tag_type(scsi_cmd->device)) {
4487 ipr_erp_request_sense(ipr_cmd);
4488 return;
4489 }
4490
4491 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4492 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4493 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4494
4495 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4496 IPR_CANCEL_ALL_TIMEOUT);
4497 }
4498
4499 /**
4500 * ipr_dump_ioasa - Dump contents of IOASA
4501 * @ioa_cfg: ioa config struct
4502 * @ipr_cmd: ipr command struct
4503 * @res: resource entry struct
4504 *
4505 * This function is invoked by the interrupt handler when ops
4506 * fail. It will log the IOASA if appropriate. Only called
4507 * for GPDD ops.
4508 *
4509 * Return value:
4510 * none
4511 **/
4512 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4513 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4514 {
4515 int i;
4516 u16 data_len;
4517 u32 ioasc, fd_ioasc;
4518 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4519 __be32 *ioasa_data = (__be32 *)ioasa;
4520 int error_index;
4521
4522 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4523 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
4524
4525 if (0 == ioasc)
4526 return;
4527
4528 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4529 return;
4530
4531 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4532 error_index = ipr_get_error(fd_ioasc);
4533 else
4534 error_index = ipr_get_error(ioasc);
4535
4536 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4537 /* Don't log an error if the IOA already logged one */
4538 if (ioasa->ilid != 0)
4539 return;
4540
4541 if (!ipr_is_gscsi(res))
4542 return;
4543
4544 if (ipr_error_table[error_index].log_ioasa == 0)
4545 return;
4546 }
4547
4548 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4549
4550 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4551 data_len = sizeof(struct ipr_ioasa);
4552 else
4553 data_len = be16_to_cpu(ioasa->ret_stat_len);
4554
4555 ipr_err("IOASA Dump:\n");
4556
4557 for (i = 0; i < data_len / 4; i += 4) {
4558 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4559 be32_to_cpu(ioasa_data[i]),
4560 be32_to_cpu(ioasa_data[i+1]),
4561 be32_to_cpu(ioasa_data[i+2]),
4562 be32_to_cpu(ioasa_data[i+3]));
4563 }
4564 }
4565
4566 /**
4567 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4568 * @ioasa: IOASA
4569 * @sense_buf: sense data buffer
4570 *
4571 * Return value:
4572 * none
4573 **/
4574 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4575 {
4576 u32 failing_lba;
4577 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4578 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4579 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4580 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4581
4582 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4583
4584 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4585 return;
4586
4587 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4588
4589 if (ipr_is_vset_device(res) &&
4590 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4591 ioasa->u.vset.failing_lba_hi != 0) {
4592 sense_buf[0] = 0x72;
4593 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4594 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4595 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4596
4597 sense_buf[7] = 12;
4598 sense_buf[8] = 0;
4599 sense_buf[9] = 0x0A;
4600 sense_buf[10] = 0x80;
4601
4602 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4603
4604 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4605 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4606 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4607 sense_buf[15] = failing_lba & 0x000000ff;
4608
4609 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4610
4611 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4612 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4613 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4614 sense_buf[19] = failing_lba & 0x000000ff;
4615 } else {
4616 sense_buf[0] = 0x70;
4617 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4618 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4619 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4620
4621 /* Illegal request */
4622 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4623 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4624 sense_buf[7] = 10; /* additional length */
4625
4626 /* IOARCB was in error */
4627 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4628 sense_buf[15] = 0xC0;
4629 else /* Parameter data was invalid */
4630 sense_buf[15] = 0x80;
4631
4632 sense_buf[16] =
4633 ((IPR_FIELD_POINTER_MASK &
4634 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4635 sense_buf[17] =
4636 (IPR_FIELD_POINTER_MASK &
4637 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4638 } else {
4639 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4640 if (ipr_is_vset_device(res))
4641 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4642 else
4643 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4644
4645 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4646 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4647 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4648 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4649 sense_buf[6] = failing_lba & 0x000000ff;
4650 }
4651
4652 sense_buf[7] = 6; /* additional length */
4653 }
4654 }
4655 }
4656
4657 /**
4658 * ipr_get_autosense - Copy autosense data to sense buffer
4659 * @ipr_cmd: ipr command struct
4660 *
4661 * This function copies the autosense buffer to the buffer
4662 * in the scsi_cmd, if there is autosense available.
4663 *
4664 * Return value:
4665 * 1 if autosense was available / 0 if not
4666 **/
4667 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4668 {
4669 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4670
4671 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4672 return 0;
4673
4674 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4675 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4676 SCSI_SENSE_BUFFERSIZE));
4677 return 1;
4678 }
4679
4680 /**
4681 * ipr_erp_start - Process an error response for a SCSI op
4682 * @ioa_cfg: ioa config struct
4683 * @ipr_cmd: ipr command struct
4684 *
4685 * This function determines whether or not to initiate ERP
4686 * on the affected device.
4687 *
4688 * Return value:
4689 * nothing
4690 **/
4691 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4692 struct ipr_cmnd *ipr_cmd)
4693 {
4694 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4695 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4696 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4697 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
4698
4699 if (!res) {
4700 ipr_scsi_eh_done(ipr_cmd);
4701 return;
4702 }
4703
4704 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
4705 ipr_gen_sense(ipr_cmd);
4706
4707 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4708
4709 switch (masked_ioasc) {
4710 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4711 if (ipr_is_naca_model(res))
4712 scsi_cmd->result |= (DID_ABORT << 16);
4713 else
4714 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4715 break;
4716 case IPR_IOASC_IR_RESOURCE_HANDLE:
4717 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4718 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4719 break;
4720 case IPR_IOASC_HW_SEL_TIMEOUT:
4721 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4722 if (!ipr_is_naca_model(res))
4723 res->needs_sync_complete = 1;
4724 break;
4725 case IPR_IOASC_SYNC_REQUIRED:
4726 if (!res->in_erp)
4727 res->needs_sync_complete = 1;
4728 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4729 break;
4730 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4731 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4732 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4733 break;
4734 case IPR_IOASC_BUS_WAS_RESET:
4735 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4736 /*
4737 * Report the bus reset and ask for a retry. The device
4738 * will give CC/UA the next command.
4739 */
4740 if (!res->resetting_device)
4741 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4742 scsi_cmd->result |= (DID_ERROR << 16);
4743 if (!ipr_is_naca_model(res))
4744 res->needs_sync_complete = 1;
4745 break;
4746 case IPR_IOASC_HW_DEV_BUS_STATUS:
4747 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4748 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4749 if (!ipr_get_autosense(ipr_cmd)) {
4750 if (!ipr_is_naca_model(res)) {
4751 ipr_erp_cancel_all(ipr_cmd);
4752 return;
4753 }
4754 }
4755 }
4756 if (!ipr_is_naca_model(res))
4757 res->needs_sync_complete = 1;
4758 break;
4759 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4760 break;
4761 default:
4762 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4763 scsi_cmd->result |= (DID_ERROR << 16);
4764 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4765 res->needs_sync_complete = 1;
4766 break;
4767 }
4768
4769 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4770 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4771 scsi_cmd->scsi_done(scsi_cmd);
4772 }
4773
4774 /**
4775 * ipr_scsi_done - mid-layer done function
4776 * @ipr_cmd: ipr command struct
4777 *
4778 * This function is invoked by the interrupt handler for
4779 * ops generated by the SCSI mid-layer
4780 *
4781 * Return value:
4782 * none
4783 **/
4784 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4785 {
4786 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4787 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4788 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4789
4790 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
4791
4792 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4793 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4794 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4795 scsi_cmd->scsi_done(scsi_cmd);
4796 } else
4797 ipr_erp_start(ioa_cfg, ipr_cmd);
4798 }
4799
4800 /**
4801 * ipr_queuecommand - Queue a mid-layer request
4802 * @scsi_cmd: scsi command struct
4803 * @done: done function
4804 *
4805 * This function queues a request generated by the mid-layer.
4806 *
4807 * Return value:
4808 * 0 on success
4809 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4810 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4811 **/
4812 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4813 void (*done) (struct scsi_cmnd *))
4814 {
4815 struct ipr_ioa_cfg *ioa_cfg;
4816 struct ipr_resource_entry *res;
4817 struct ipr_ioarcb *ioarcb;
4818 struct ipr_cmnd *ipr_cmd;
4819 int rc = 0;
4820
4821 scsi_cmd->scsi_done = done;
4822 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4823 res = scsi_cmd->device->hostdata;
4824 scsi_cmd->result = (DID_OK << 16);
4825
4826 /*
4827 * We are currently blocking all devices due to a host reset
4828 * We have told the host to stop giving us new requests, but
4829 * ERP ops don't count. FIXME
4830 */
4831 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4832 return SCSI_MLQUEUE_HOST_BUSY;
4833
4834 /*
4835 * FIXME - Create scsi_set_host_offline interface
4836 * and the ioa_is_dead check can be removed
4837 */
4838 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4839 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4840 scsi_cmd->result = (DID_NO_CONNECT << 16);
4841 scsi_cmd->scsi_done(scsi_cmd);
4842 return 0;
4843 }
4844
4845 if (ipr_is_gata(res) && res->sata_port)
4846 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4847
4848 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4849 ioarcb = &ipr_cmd->ioarcb;
4850 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4851
4852 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4853 ipr_cmd->scsi_cmd = scsi_cmd;
4854 ioarcb->res_handle = res->cfgte.res_handle;
4855 ipr_cmd->done = ipr_scsi_done;
4856 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4857
4858 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4859 if (scsi_cmd->underflow == 0)
4860 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4861
4862 if (res->needs_sync_complete) {
4863 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4864 res->needs_sync_complete = 0;
4865 }
4866
4867 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4868 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4869 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4870 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4871 }
4872
4873 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4874 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4875 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4876
4877 if (likely(rc == 0))
4878 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4879
4880 if (likely(rc == 0)) {
4881 mb();
4882 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4883 ioa_cfg->regs.ioarrin_reg);
4884 } else {
4885 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4886 return SCSI_MLQUEUE_HOST_BUSY;
4887 }
4888
4889 return 0;
4890 }
4891
4892 /**
4893 * ipr_ioctl - IOCTL handler
4894 * @sdev: scsi device struct
4895 * @cmd: IOCTL cmd
4896 * @arg: IOCTL arg
4897 *
4898 * Return value:
4899 * 0 on success / other on failure
4900 **/
4901 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4902 {
4903 struct ipr_resource_entry *res;
4904
4905 res = (struct ipr_resource_entry *)sdev->hostdata;
4906 if (res && ipr_is_gata(res))
4907 return ata_scsi_ioctl(sdev, cmd, arg);
4908
4909 return -EINVAL;
4910 }
4911
4912 /**
4913 * ipr_info - Get information about the card/driver
4914 * @scsi_host: scsi host struct
4915 *
4916 * Return value:
4917 * pointer to buffer with description string
4918 **/
4919 static const char * ipr_ioa_info(struct Scsi_Host *host)
4920 {
4921 static char buffer[512];
4922 struct ipr_ioa_cfg *ioa_cfg;
4923 unsigned long lock_flags = 0;
4924
4925 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4926
4927 spin_lock_irqsave(host->host_lock, lock_flags);
4928 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4929 spin_unlock_irqrestore(host->host_lock, lock_flags);
4930
4931 return buffer;
4932 }
4933
4934 static struct scsi_host_template driver_template = {
4935 .module = THIS_MODULE,
4936 .name = "IPR",
4937 .info = ipr_ioa_info,
4938 .ioctl = ipr_ioctl,
4939 .queuecommand = ipr_queuecommand,
4940 .eh_abort_handler = ipr_eh_abort,
4941 .eh_device_reset_handler = ipr_eh_dev_reset,
4942 .eh_host_reset_handler = ipr_eh_host_reset,
4943 .slave_alloc = ipr_slave_alloc,
4944 .slave_configure = ipr_slave_configure,
4945 .slave_destroy = ipr_slave_destroy,
4946 .target_alloc = ipr_target_alloc,
4947 .target_destroy = ipr_target_destroy,
4948 .change_queue_depth = ipr_change_queue_depth,
4949 .change_queue_type = ipr_change_queue_type,
4950 .bios_param = ipr_biosparam,
4951 .can_queue = IPR_MAX_COMMANDS,
4952 .this_id = -1,
4953 .sg_tablesize = IPR_MAX_SGLIST,
4954 .max_sectors = IPR_IOA_MAX_SECTORS,
4955 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4956 .use_clustering = ENABLE_CLUSTERING,
4957 .shost_attrs = ipr_ioa_attrs,
4958 .sdev_attrs = ipr_dev_attrs,
4959 .proc_name = IPR_NAME
4960 };
4961
4962 /**
4963 * ipr_ata_phy_reset - libata phy_reset handler
4964 * @ap: ata port to reset
4965 *
4966 **/
4967 static void ipr_ata_phy_reset(struct ata_port *ap)
4968 {
4969 unsigned long flags;
4970 struct ipr_sata_port *sata_port = ap->private_data;
4971 struct ipr_resource_entry *res = sata_port->res;
4972 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4973 int rc;
4974
4975 ENTER;
4976 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4977 while(ioa_cfg->in_reset_reload) {
4978 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4979 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4980 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4981 }
4982
4983 if (!ioa_cfg->allow_cmds)
4984 goto out_unlock;
4985
4986 rc = ipr_device_reset(ioa_cfg, res);
4987
4988 if (rc) {
4989 ata_port_disable(ap);
4990 goto out_unlock;
4991 }
4992
4993 switch(res->cfgte.proto) {
4994 case IPR_PROTO_SATA:
4995 case IPR_PROTO_SAS_STP:
4996 ap->link.device[0].class = ATA_DEV_ATA;
4997 break;
4998 case IPR_PROTO_SATA_ATAPI:
4999 case IPR_PROTO_SAS_STP_ATAPI:
5000 ap->link.device[0].class = ATA_DEV_ATAPI;
5001 break;
5002 default:
5003 ap->link.device[0].class = ATA_DEV_UNKNOWN;
5004 ata_port_disable(ap);
5005 break;
5006 };
5007
5008 out_unlock:
5009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5010 LEAVE;
5011 }
5012
5013 /**
5014 * ipr_ata_post_internal - Cleanup after an internal command
5015 * @qc: ATA queued command
5016 *
5017 * Return value:
5018 * none
5019 **/
5020 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5021 {
5022 struct ipr_sata_port *sata_port = qc->ap->private_data;
5023 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5024 struct ipr_cmnd *ipr_cmd;
5025 unsigned long flags;
5026
5027 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5028 while(ioa_cfg->in_reset_reload) {
5029 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5030 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5031 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5032 }
5033
5034 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5035 if (ipr_cmd->qc == qc) {
5036 ipr_device_reset(ioa_cfg, sata_port->res);
5037 break;
5038 }
5039 }
5040 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5041 }
5042
5043 /**
5044 * ipr_tf_read - Read the current ATA taskfile for the ATA port
5045 * @ap: ATA port
5046 * @tf: destination ATA taskfile
5047 *
5048 * Return value:
5049 * none
5050 **/
5051 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
5052 {
5053 struct ipr_sata_port *sata_port = ap->private_data;
5054 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5055
5056 tf->feature = g->error;
5057 tf->nsect = g->nsect;
5058 tf->lbal = g->lbal;
5059 tf->lbam = g->lbam;
5060 tf->lbah = g->lbah;
5061 tf->device = g->device;
5062 tf->command = g->status;
5063 tf->hob_nsect = g->hob_nsect;
5064 tf->hob_lbal = g->hob_lbal;
5065 tf->hob_lbam = g->hob_lbam;
5066 tf->hob_lbah = g->hob_lbah;
5067 tf->ctl = g->alt_status;
5068 }
5069
5070 /**
5071 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5072 * @regs: destination
5073 * @tf: source ATA taskfile
5074 *
5075 * Return value:
5076 * none
5077 **/
5078 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5079 struct ata_taskfile *tf)
5080 {
5081 regs->feature = tf->feature;
5082 regs->nsect = tf->nsect;
5083 regs->lbal = tf->lbal;
5084 regs->lbam = tf->lbam;
5085 regs->lbah = tf->lbah;
5086 regs->device = tf->device;
5087 regs->command = tf->command;
5088 regs->hob_feature = tf->hob_feature;
5089 regs->hob_nsect = tf->hob_nsect;
5090 regs->hob_lbal = tf->hob_lbal;
5091 regs->hob_lbam = tf->hob_lbam;
5092 regs->hob_lbah = tf->hob_lbah;
5093 regs->ctl = tf->ctl;
5094 }
5095
5096 /**
5097 * ipr_sata_done - done function for SATA commands
5098 * @ipr_cmd: ipr command struct
5099 *
5100 * This function is invoked by the interrupt handler for
5101 * ops generated by the SCSI mid-layer to SATA devices
5102 *
5103 * Return value:
5104 * none
5105 **/
5106 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5107 {
5108 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5109 struct ata_queued_cmd *qc = ipr_cmd->qc;
5110 struct ipr_sata_port *sata_port = qc->ap->private_data;
5111 struct ipr_resource_entry *res = sata_port->res;
5112 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5113
5114 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5115 sizeof(struct ipr_ioasa_gata));
5116 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5117
5118 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5119 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5120 res->cfgte.res_addr.target);
5121
5122 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5123 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5124 else
5125 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5126 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5127 ata_qc_complete(qc);
5128 }
5129
5130 /**
5131 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5132 * @ipr_cmd: ipr command struct
5133 * @qc: ATA queued command
5134 *
5135 **/
5136 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5137 struct ata_queued_cmd *qc)
5138 {
5139 u32 ioadl_flags = 0;
5140 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5141 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5142 struct ipr_ioadl_desc *last_ioadl = NULL;
5143 <<<<<<< HEAD:drivers/scsi/ipr.c
5144 int len = qc->nbytes + qc->pad_len;
5145 =======
5146 int len = qc->nbytes;
5147 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/scsi/ipr.c
5148 struct scatterlist *sg;
5149 unsigned int si;
5150
5151 if (len == 0)
5152 return;
5153
5154 if (qc->dma_dir == DMA_TO_DEVICE) {
5155 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5156 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5157 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5158 ioarcb->write_ioadl_len =
5159 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5160 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5161 ioadl_flags = IPR_IOADL_FLAGS_READ;
5162 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5163 ioarcb->read_ioadl_len =
5164 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5165 }
5166
5167 for_each_sg(qc->sg, sg, qc->n_elem, si) {
5168 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5169 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5170
5171 last_ioadl = ioadl;
5172 ioadl++;
5173 }
5174
5175 if (likely(last_ioadl))
5176 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5177 }
5178
5179 /**
5180 * ipr_qc_issue - Issue a SATA qc to a device
5181 * @qc: queued command
5182 *
5183 * Return value:
5184 * 0 if success
5185 **/
5186 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5187 {
5188 struct ata_port *ap = qc->ap;
5189 struct ipr_sata_port *sata_port = ap->private_data;
5190 struct ipr_resource_entry *res = sata_port->res;
5191 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5192 struct ipr_cmnd *ipr_cmd;
5193 struct ipr_ioarcb *ioarcb;
5194 struct ipr_ioarcb_ata_regs *regs;
5195
5196 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5197 return AC_ERR_SYSTEM;
5198
5199 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5200 ioarcb = &ipr_cmd->ioarcb;
5201 regs = &ioarcb->add_data.u.regs;
5202
5203 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5204 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5205
5206 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5207 ipr_cmd->qc = qc;
5208 ipr_cmd->done = ipr_sata_done;
5209 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5210 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5211 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5212 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5213 <<<<<<< HEAD:drivers/scsi/ipr.c
5214 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5215 =======
5216 ipr_cmd->dma_use_sg = qc->n_elem;
5217 >>>>>>> 264e3e889d86e552b4191d69bb60f4f3b383135a:drivers/scsi/ipr.c
5218
5219 ipr_build_ata_ioadl(ipr_cmd, qc);
5220 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5221 ipr_copy_sata_tf(regs, &qc->tf);
5222 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5223 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5224
5225 switch (qc->tf.protocol) {
5226 case ATA_PROT_NODATA:
5227 case ATA_PROT_PIO:
5228 break;
5229
5230 case ATA_PROT_DMA:
5231 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5232 break;
5233
5234 case ATAPI_PROT_PIO:
5235 case ATAPI_PROT_NODATA:
5236 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5237 break;
5238
5239 case ATAPI_PROT_DMA:
5240 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5241 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5242 break;
5243
5244 default:
5245 WARN_ON(1);
5246 return AC_ERR_INVALID;
5247 }
5248
5249 mb();
5250 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5251 ioa_cfg->regs.ioarrin_reg);
5252 return 0;
5253 }
5254
5255 /**
5256 * ipr_ata_check_status - Return last ATA status
5257 * @ap: ATA port
5258 *
5259 * Return value:
5260 * ATA status
5261 **/
5262 static u8 ipr_ata_check_status(struct ata_port *ap)
5263 {
5264 struct ipr_sata_port *sata_port = ap->private_data;
5265 return sata_port->ioasa.status;
5266 }
5267
5268 /**
5269 * ipr_ata_check_altstatus - Return last ATA altstatus
5270 * @ap: ATA port
5271 *
5272 * Return value:
5273 * Alt ATA status
5274 **/
5275 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5276 {
5277 struct ipr_sata_port *sata_port = ap->private_data;
5278 return sata_port->ioasa.alt_status;
5279 }
5280
5281 static struct ata_port_operations ipr_sata_ops = {
5282 .check_status = ipr_ata_check_status,
5283 .check_altstatus = ipr_ata_check_altstatus,
5284 .dev_select = ata_noop_dev_select,
5285 .phy_reset = ipr_ata_phy_reset,
5286 .post_internal_cmd = ipr_ata_post_internal,
5287 .tf_read = ipr_tf_read,
5288 .qc_prep = ata_noop_qc_prep,
5289 .qc_issue = ipr_qc_issue,
5290 .port_start = ata_sas_port_start,
5291 .port_stop = ata_sas_port_stop
5292 };
5293
5294 static struct ata_port_info sata_port_info = {
5295 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5296 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5297 .pio_mask = 0x10, /* pio4 */
5298 .mwdma_mask = 0x07,
5299 .udma_mask = 0x7f, /* udma0-6 */
5300 .port_ops = &ipr_sata_ops
5301 };
5302
5303 #ifdef CONFIG_PPC_PSERIES
5304 static const u16 ipr_blocked_processors[] = {
5305 PV_NORTHSTAR,
5306 PV_PULSAR,
5307 PV_POWER4,
5308 PV_ICESTAR,
5309 PV_SSTAR,
5310 PV_POWER4p,
5311 PV_630,
5312 PV_630p
5313 };
5314
5315 /**
5316 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5317 * @ioa_cfg: ioa cfg struct
5318 *
5319 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5320 * certain pSeries hardware. This function determines if the given
5321 * adapter is in one of these confgurations or not.
5322 *
5323 * Return value:
5324 * 1 if adapter is not supported / 0 if adapter is supported
5325 **/
5326 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5327 {
5328 int i;
5329
5330 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5331 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5332 if (__is_processor(ipr_blocked_processors[i]))
5333 return 1;
5334 }
5335 }
5336 return 0;
5337 }
5338 #else
5339 #define ipr_invalid_adapter(ioa_cfg) 0
5340 #endif
5341
5342 /**
5343 * ipr_ioa_bringdown_done - IOA bring down completion.
5344 * @ipr_cmd: ipr command struct
5345 *
5346 * This function processes the completion of an adapter bring down.
5347 * It wakes any reset sleepers.
5348 *
5349 * Return value:
5350 * IPR_RC_JOB_RETURN
5351 **/
5352 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5353 {
5354 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5355
5356 ENTER;
5357 ioa_cfg->in_reset_reload = 0;
5358 ioa_cfg->reset_retries = 0;
5359 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5360 wake_up_all(&ioa_cfg->reset_wait_q);
5361
5362 spin_unlock_irq(ioa_cfg->host->host_lock);
5363 scsi_unblock_requests(ioa_cfg->host);
5364 spin_lock_irq(ioa_cfg->host->host_lock);
5365 LEAVE;
5366
5367 return IPR_RC_JOB_RETURN;
5368 }
5369
5370 /**
5371 * ipr_ioa_reset_done - IOA reset completion.
5372 * @ipr_cmd: ipr command struct
5373 *
5374 * This function processes the completion of an adapter reset.
5375 * It schedules any necessary mid-layer add/removes and
5376 * wakes any reset sleepers.
5377 *
5378 * Return value:
5379 * IPR_RC_JOB_RETURN
5380 **/
5381 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5382 {
5383 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5384 struct ipr_resource_entry *res;
5385 struct ipr_hostrcb *hostrcb, *temp;
5386 int i = 0;
5387
5388 ENTER;
5389 ioa_cfg->in_reset_reload = 0;
5390 ioa_cfg->allow_cmds = 1;
5391 ioa_cfg->reset_cmd = NULL;
5392 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5393
5394 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5395 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5396 ipr_trace;
5397 break;
5398 }
5399 }
5400 schedule_work(&ioa_cfg->work_q);
5401
5402 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5403 list_del(&hostrcb->queue);
5404 if (i++ < IPR_NUM_LOG_HCAMS)
5405 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5406 else
5407 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5408 }
5409
5410 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
5411 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5412
5413 ioa_cfg->reset_retries = 0;
5414 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5415 wake_up_all(&ioa_cfg->reset_wait_q);
5416
5417 spin_unlock_irq(ioa_cfg->host->host_lock);
5418 scsi_unblock_requests(ioa_cfg->host);
5419 spin_lock_irq(ioa_cfg->host->host_lock);
5420
5421 if (!ioa_cfg->allow_cmds)
5422 scsi_block_requests(ioa_cfg->host);
5423
5424 LEAVE;
5425 return IPR_RC_JOB_RETURN;
5426 }
5427
5428 /**
5429 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5430 * @supported_dev: supported device struct
5431 * @vpids: vendor product id struct
5432 *
5433 * Return value:
5434 * none
5435 **/
5436 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5437 struct ipr_std_inq_vpids *vpids)
5438 {
5439 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5440 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5441 supported_dev->num_records = 1;
5442 supported_dev->data_length =
5443 cpu_to_be16(sizeof(struct ipr_supported_device));
5444 supported_dev->reserved = 0;
5445 }
5446
5447 /**
5448 * ipr_set_supported_devs - Send Set Supported Devices for a device
5449 * @ipr_cmd: ipr command struct
5450 *
5451 * This function send a Set Supported Devices to the adapter
5452 *
5453 * Return value:
5454 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5455 **/
5456 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5457 {
5458 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5459 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5460 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5461 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5462 struct ipr_resource_entry *res = ipr_cmd->u.res;
5463
5464 ipr_cmd->job_step = ipr_ioa_reset_done;
5465
5466 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5467 if (!ipr_is_scsi_disk(res))
5468 continue;
5469
5470 ipr_cmd->u.res = res;
5471 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5472
5473 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5474 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5475 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5476
5477 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5478 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5479 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5480
5481 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5482 sizeof(struct ipr_supported_device));
5483 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5484 offsetof(struct ipr_misc_cbs, supp_dev));
5485 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5486 ioarcb->write_data_transfer_length =
5487 cpu_to_be32(sizeof(struct ipr_supported_device));
5488
5489 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5490 IPR_SET_SUP_DEVICE_TIMEOUT);
5491
5492 ipr_cmd->job_step = ipr_set_supported_devs;
5493 return IPR_RC_JOB_RETURN;
5494 }
5495
5496 return IPR_RC_JOB_CONTINUE;
5497 }
5498
5499 /**
5500 * ipr_setup_write_cache - Disable write cache if needed
5501 * @ipr_cmd: ipr command struct
5502 *
5503 * This function sets up adapters write cache to desired setting
5504 *
5505 * Return value:
5506 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5507 **/
5508 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5509 {
5510 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5511
5512 ipr_cmd->job_step = ipr_set_supported_devs;
5513 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5514 struct ipr_resource_entry, queue);
5515
5516 if (ioa_cfg->cache_state != CACHE_DISABLED)
5517 return IPR_RC_JOB_CONTINUE;
5518
5519 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5520 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5521 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5522 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5523
5524 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5525
5526 return IPR_RC_JOB_RETURN;
5527 }
5528
5529 /**
5530 * ipr_get_mode_page - Locate specified mode page
5531 * @mode_pages: mode page buffer
5532 * @page_code: page code to find
5533 * @len: minimum required length for mode page
5534 *
5535 * Return value:
5536 * pointer to mode page / NULL on failure
5537 **/
5538 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5539 u32 page_code, u32 len)
5540 {
5541 struct ipr_mode_page_hdr *mode_hdr;
5542 u32 page_length;
5543 u32 length;
5544
5545 if (!mode_pages || (mode_pages->hdr.length == 0))
5546 return NULL;
5547
5548 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5549 mode_hdr = (struct ipr_mode_page_hdr *)
5550 (mode_pages->data + mode_pages->hdr.block_desc_len);
5551
5552 while (length) {
5553 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5554 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5555 return mode_hdr;
5556 break;
5557 } else {
5558 page_length = (sizeof(struct ipr_mode_page_hdr) +
5559 mode_hdr->page_length);
5560 length -= page_length;
5561 mode_hdr = (struct ipr_mode_page_hdr *)
5562 ((unsigned long)mode_hdr + page_length);
5563 }
5564 }
5565 return NULL;
5566 }
5567
5568 /**
5569 * ipr_check_term_power - Check for term power errors
5570 * @ioa_cfg: ioa config struct
5571 * @mode_pages: IOAFP mode pages buffer
5572 *
5573 * Check the IOAFP's mode page 28 for term power errors
5574 *
5575 * Return value:
5576 * nothing
5577 **/
5578 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5579 struct ipr_mode_pages *mode_pages)
5580 {
5581 int i;
5582 int entry_length;
5583 struct ipr_dev_bus_entry *bus;
5584 struct ipr_mode_page28 *mode_page;
5585
5586 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5587 sizeof(struct ipr_mode_page28));
5588
5589 entry_length = mode_page->entry_length;
5590
5591 bus = mode_page->bus;
5592
5593 for (i = 0; i < mode_page->num_entries; i++) {
5594 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5595 dev_err(&ioa_cfg->pdev->dev,
5596 "Term power is absent on scsi bus %d\n",
5597 bus->res_addr.bus);
5598 }
5599
5600 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5601 }
5602 }
5603
5604 /**
5605 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5606 * @ioa_cfg: ioa config struct
5607 *
5608 * Looks through the config table checking for SES devices. If
5609 * the SES device is in the SES table indicating a maximum SCSI
5610 * bus speed, the speed is limited for the bus.
5611 *
5612 * Return value:
5613 * none
5614 **/
5615 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5616 {
5617 u32 max_xfer_rate;
5618 int i;
5619
5620 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5621 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5622 ioa_cfg->bus_attr[i].bus_width);
5623
5624 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5625 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5626 }
5627 }
5628
5629 /**
5630 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5631 * @ioa_cfg: ioa config struct
5632 * @mode_pages: mode page 28 buffer
5633 *
5634 * Updates mode page 28 based on driver configuration
5635 *
5636 * Return value:
5637 * none
5638 **/
5639 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5640 struct ipr_mode_pages *mode_pages)
5641 {
5642 int i, entry_length;
5643 struct ipr_dev_bus_entry *bus;
5644 struct ipr_bus_attributes *bus_attr;
5645 struct ipr_mode_page28 *mode_page;
5646
5647 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5648 sizeof(struct ipr_mode_page28));
5649
5650 entry_length = mode_page->entry_length;
5651
5652 /* Loop for each device bus entry */
5653 for (i = 0, bus = mode_page->bus;
5654 i < mode_page->num_entries;
5655 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5656 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5657 dev_err(&ioa_cfg->pdev->dev,
5658 "Invalid resource address reported: 0x%08X\n",
5659 IPR_GET_PHYS_LOC(bus->res_addr));
5660 continue;
5661 }
5662
5663 bus_attr = &ioa_cfg->bus_attr[i];
5664 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5665 bus->bus_width = bus_attr->bus_width;
5666 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5667 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5668 if (bus_attr->qas_enabled)
5669 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5670 else
5671 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5672 }
5673 }
5674
5675 /**
5676 * ipr_build_mode_select - Build a mode select command
5677 * @ipr_cmd: ipr command struct
5678 * @res_handle: resource handle to send command to
5679 * @parm: Byte 2 of Mode Sense command
5680 * @dma_addr: DMA buffer address
5681 * @xfer_len: data transfer length
5682 *
5683 * Return value:
5684 * none
5685 **/
5686 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5687 __be32 res_handle, u8 parm, u32 dma_addr,
5688 u8 xfer_len)
5689 {
5690 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5691 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5692
5693 ioarcb->res_handle = res_handle;
5694 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5695 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5696 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5697 ioarcb->cmd_pkt.cdb[1] = parm;
5698 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5699
5700 ioadl->flags_and_data_len =
5701 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5702 ioadl->address = cpu_to_be32(dma_addr);
5703 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5704 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5705 }
5706
5707 /**
5708 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5709 * @ipr_cmd: ipr command struct
5710 *
5711 * This function sets up the SCSI bus attributes and sends
5712 * a Mode Select for Page 28 to activate them.
5713 *
5714 * Return value:
5715 * IPR_RC_JOB_RETURN
5716 **/
5717 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5718 {
5719 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5720 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5721 int length;
5722
5723 ENTER;
5724 ipr_scsi_bus_speed_limit(ioa_cfg);
5725 ipr_check_term_power(ioa_cfg, mode_pages);
5726 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5727 length = mode_pages->hdr.length + 1;
5728 mode_pages->hdr.length = 0;
5729
5730 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5731 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5732 length);
5733
5734 ipr_cmd->job_step = ipr_setup_write_cache;
5735 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5736
5737 LEAVE;
5738 return IPR_RC_JOB_RETURN;
5739 }
5740
5741 /**
5742 * ipr_build_mode_sense - Builds a mode sense command
5743 * @ipr_cmd: ipr command struct
5744 * @res: resource entry struct
5745 * @parm: Byte 2 of mode sense command
5746 * @dma_addr: DMA address of mode sense buffer
5747 * @xfer_len: Size of DMA buffer
5748 *
5749 * Return value:
5750 * none
5751 **/
5752 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5753 __be32 res_handle,
5754 u8 parm, u32 dma_addr, u8 xfer_len)
5755 {
5756 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5757 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5758
5759 ioarcb->res_handle = res_handle;
5760 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5761 ioarcb->cmd_pkt.cdb[2] = parm;
5762 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5763 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5764
5765 ioadl->flags_and_data_len =
5766 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5767 ioadl->address = cpu_to_be32(dma_addr);
5768 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5769 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5770 }
5771
5772 /**
5773 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5774 * @ipr_cmd: ipr command struct
5775 *
5776 * This function handles the failure of an IOA bringup command.
5777 *
5778 * Return value:
5779 * IPR_RC_JOB_RETURN
5780 **/
5781 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5782 {
5783 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5784 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5785
5786 dev_err(&ioa_cfg->pdev->dev,
5787 "0x%02X failed with IOASC: 0x%08X\n",
5788 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5789
5790 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5791 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5792 return IPR_RC_JOB_RETURN;
5793 }
5794
5795 /**
5796 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5797 * @ipr_cmd: ipr command struct
5798 *
5799 * This function handles the failure of a Mode Sense to the IOAFP.
5800 * Some adapters do not handle all mode pages.
5801 *
5802 * Return value:
5803 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5804 **/
5805 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5806 {
5807 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5808
5809 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5810 ipr_cmd->job_step = ipr_setup_write_cache;
5811 return IPR_RC_JOB_CONTINUE;
5812 }
5813
5814 return ipr_reset_cmd_failed(ipr_cmd);
5815 }
5816
5817 /**
5818 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5819 * @ipr_cmd: ipr command struct
5820 *
5821 * This function send a Page 28 mode sense to the IOA to
5822 * retrieve SCSI bus attributes.
5823 *
5824 * Return value:
5825 * IPR_RC_JOB_RETURN
5826 **/
5827 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5828 {
5829 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5830
5831 ENTER;
5832 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5833 0x28, ioa_cfg->vpd_cbs_dma +
5834 offsetof(struct ipr_misc_cbs, mode_pages),
5835 sizeof(struct ipr_mode_pages));
5836
5837 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5838 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5839
5840 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5841
5842 LEAVE;
5843 return IPR_RC_JOB_RETURN;
5844 }
5845
5846 /**
5847 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5848 * @ipr_cmd: ipr command struct
5849 *
5850 * This function enables dual IOA RAID support if possible.
5851 *
5852 * Return value:
5853 * IPR_RC_JOB_RETURN
5854 **/
5855 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5856 {
5857 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5858 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5859 struct ipr_mode_page24 *mode_page;
5860 int length;
5861
5862 ENTER;
5863 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5864 sizeof(struct ipr_mode_page24));
5865
5866 if (mode_page)
5867 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5868
5869 length = mode_pages->hdr.length + 1;
5870 mode_pages->hdr.length = 0;
5871
5872 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5873 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5874 length);
5875
5876 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5877 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5878
5879 LEAVE;
5880 return IPR_RC_JOB_RETURN;
5881 }
5882
5883 /**
5884 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5885 * @ipr_cmd: ipr command struct
5886 *
5887 * This function handles the failure of a Mode Sense to the IOAFP.
5888 * Some adapters do not handle all mode pages.
5889 *
5890 * Return value:
5891 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5892 **/
5893 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5894 {
5895 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5896
5897 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5898 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5899 return IPR_RC_JOB_CONTINUE;
5900 }
5901
5902 return ipr_reset_cmd_failed(ipr_cmd);
5903 }
5904
5905 /**
5906 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5907 * @ipr_cmd: ipr command struct
5908 *
5909 * This function send a mode sense to the IOA to retrieve
5910 * the IOA Advanced Function Control mode page.
5911 *
5912 * Return value:
5913 * IPR_RC_JOB_RETURN
5914 **/
5915 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5916 {
5917 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5918
5919 ENTER;
5920 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5921 0x24, ioa_cfg->vpd_cbs_dma +
5922 offsetof(struct ipr_misc_cbs, mode_pages),
5923 sizeof(struct ipr_mode_pages));
5924
5925 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5926 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5927
5928 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5929
5930 LEAVE;
5931 return IPR_RC_JOB_RETURN;
5932 }
5933
5934 /**
5935 * ipr_init_res_table - Initialize the resource table
5936 * @ipr_cmd: ipr command struct
5937 *
5938 * This function looks through the existing resource table, comparing
5939 * it with the config table. This function will take care of old/new
5940 * devices and schedule adding/removing them from the mid-layer
5941 * as appropriate.
5942 *
5943 * Return value:
5944 * IPR_RC_JOB_CONTINUE
5945 **/
5946 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5947 {
5948 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5949 struct ipr_resource_entry *res, *temp;
5950 struct ipr_config_table_entry *cfgte;
5951 int found, i;
5952 LIST_HEAD(old_res);
5953
5954 ENTER;
5955 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5956 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5957
5958 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5959 list_move_tail(&res->queue, &old_res);
5960
5961 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5962 cfgte = &ioa_cfg->cfg_table->dev[i];
5963 found = 0;
5964
5965 list_for_each_entry_safe(res, temp, &old_res, queue) {
5966 if (!memcmp(&res->cfgte.res_addr,
5967 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5968 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5969 found = 1;
5970 break;
5971 }
5972 }
5973
5974 if (!found) {
5975 if (list_empty(&ioa_cfg->free_res_q)) {
5976 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5977 break;
5978 }
5979
5980 found = 1;
5981 res = list_entry(ioa_cfg->free_res_q.next,
5982 struct ipr_resource_entry, queue);
5983 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5984 ipr_init_res_entry(res);
5985 res->add_to_ml = 1;
5986 }
5987
5988 if (found)
5989 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5990 }
5991
5992 list_for_each_entry_safe(res, temp, &old_res, queue) {
5993 if (res->sdev) {
5994 res->del_from_ml = 1;
5995 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5996 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5997 } else {
5998 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5999 }
6000 }
6001
6002 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6003 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6004 else
6005 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6006
6007 LEAVE;
6008 return IPR_RC_JOB_CONTINUE;
6009 }
6010
6011 /**
6012 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6013 * @ipr_cmd: ipr command struct
6014 *
6015 * This function sends a Query IOA Configuration command
6016 * to the adapter to retrieve the IOA configuration table.
6017 *
6018 * Return value:
6019 * IPR_RC_JOB_RETURN
6020 **/
6021 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6022 {
6023 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6024 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6025 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6026 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6027 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6028
6029 ENTER;
6030 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6031 ioa_cfg->dual_raid = 1;
6032 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6033 ucode_vpd->major_release, ucode_vpd->card_type,
6034 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6035 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6036 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6037
6038 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6039 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6040 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6041
6042 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6043 ioarcb->read_data_transfer_length =
6044 cpu_to_be32(sizeof(struct ipr_config_table));
6045
6046 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6047 ioadl->flags_and_data_len =
6048 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6049
6050 ipr_cmd->job_step = ipr_init_res_table;
6051
6052 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6053
6054 LEAVE;
6055 return IPR_RC_JOB_RETURN;
6056 }
6057
6058 /**
6059 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6060 * @ipr_cmd: ipr command struct
6061 *
6062 * This utility function sends an inquiry to the adapter.
6063 *
6064 * Return value:
6065 * none
6066 **/
6067 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6068 u32 dma_addr, u8 xfer_len)
6069 {
6070 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6071 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6072
6073 ENTER;
6074 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6075 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6076
6077 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6078 ioarcb->cmd_pkt.cdb[1] = flags;
6079 ioarcb->cmd_pkt.cdb[2] = page;
6080 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6081
6082 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6083 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6084
6085 ioadl->address = cpu_to_be32(dma_addr);
6086 ioadl->flags_and_data_len =
6087 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6088
6089 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6090 LEAVE;
6091 }
6092
6093 /**
6094 * ipr_inquiry_page_supported - Is the given inquiry page supported
6095 * @page0: inquiry page 0 buffer
6096 * @page: page code.
6097 *
6098 * This function determines if the specified inquiry page is supported.
6099 *
6100 * Return value:
6101 * 1 if page is supported / 0 if not
6102 **/
6103 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6104 {
6105 int i;
6106
6107 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6108 if (page0->page[i] == page)
6109 return 1;
6110
6111 return 0;
6112 }
6113
6114 /**
6115 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6116 * @ipr_cmd: ipr command struct
6117 *
6118 * This function sends a Page 0xD0 inquiry to the adapter
6119 * to retrieve adapter capabilities.
6120 *
6121 * Return value:
6122 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6123 **/
6124 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6125 {
6126 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6127 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6128 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6129
6130 ENTER;
6131 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6132 memset(cap, 0, sizeof(*cap));
6133
6134 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6135 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6136 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6137 sizeof(struct ipr_inquiry_cap));
6138 return IPR_RC_JOB_RETURN;
6139 }
6140
6141 LEAVE;
6142 return IPR_RC_JOB_CONTINUE;
6143 }
6144
6145 /**
6146 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6147 * @ipr_cmd: ipr command struct
6148 *
6149 * This function sends a Page 3 inquiry to the adapter
6150 * to retrieve software VPD information.
6151 *
6152 * Return value:
6153 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6154 **/
6155 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
6156 {
6157 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6158 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6159
6160 ENTER;
6161
6162 if (!ipr_inquiry_page_supported(page0, 1))
6163 ioa_cfg->cache_state = CACHE_NONE;
6164
6165 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
6166
6167 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6168 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6169 sizeof(struct ipr_inquiry_page3));
6170
6171 LEAVE;
6172 return IPR_RC_JOB_RETURN;
6173 }
6174
6175 /**
6176 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6177 * @ipr_cmd: ipr command struct
6178 *
6179 * This function sends a Page 0 inquiry to the adapter
6180 * to retrieve supported inquiry pages.
6181 *
6182 * Return value:
6183 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6184 **/
6185 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6186 {
6187 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6188 char type[5];
6189
6190 ENTER;
6191
6192 /* Grab the type out of the VPD and store it away */
6193 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6194 type[4] = '\0';
6195 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6196
6197 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6198
6199 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6200 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6201 sizeof(struct ipr_inquiry_page0));
6202
6203 LEAVE;
6204 return IPR_RC_JOB_RETURN;
6205 }
6206
6207 /**
6208 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6209 * @ipr_cmd: ipr command struct
6210 *
6211 * This function sends a standard inquiry to the adapter.
6212 *
6213 * Return value:
6214 * IPR_RC_JOB_RETURN
6215 **/
6216 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6217 {
6218 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6219
6220 ENTER;
6221 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6222
6223 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6224 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6225 sizeof(struct ipr_ioa_vpd));
6226
6227 LEAVE;
6228 return IPR_RC_JOB_RETURN;
6229 }
6230
6231 /**
6232 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6233 * @ipr_cmd: ipr command struct
6234 *
6235 * This function send an Identify Host Request Response Queue
6236 * command to establish the HRRQ with the adapter.
6237 *
6238 * Return value:
6239 * IPR_RC_JOB_RETURN
6240 **/
6241 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6242 {
6243 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6244 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6245
6246 ENTER;
6247 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6248
6249 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6250 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6251
6252 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6253 ioarcb->cmd_pkt.cdb[2] =
6254 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6255 ioarcb->cmd_pkt.cdb[3] =
6256 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6257 ioarcb->cmd_pkt.cdb[4] =
6258 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6259 ioarcb->cmd_pkt.cdb[5] =
6260 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6261 ioarcb->cmd_pkt.cdb[7] =
6262 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6263 ioarcb->cmd_pkt.cdb[8] =
6264 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6265
6266 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6267
6268 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6269
6270 LEAVE;
6271 return IPR_RC_JOB_RETURN;
6272 }
6273
6274 /**
6275 * ipr_reset_timer_done - Adapter reset timer function
6276 * @ipr_cmd: ipr command struct
6277 *
6278 * Description: This function is used in adapter reset processing
6279 * for timing events. If the reset_cmd pointer in the IOA
6280 * config struct is not this adapter's we are doing nested
6281 * resets and fail_all_ops will take care of freeing the
6282 * command block.
6283 *
6284 * Return value:
6285 * none
6286 **/
6287 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6288 {
6289 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6290 unsigned long lock_flags = 0;
6291
6292 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6293
6294 if (ioa_cfg->reset_cmd == ipr_cmd) {
6295 list_del(&ipr_cmd->queue);
6296 ipr_cmd->done(ipr_cmd);
6297 }
6298
6299 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6300 }
6301
6302 /**
6303 * ipr_reset_start_timer - Start a timer for adapter reset job
6304 * @ipr_cmd: ipr command struct
6305 * @timeout: timeout value
6306 *
6307 * Description: This function is used in adapter reset processing
6308 * for timing events. If the reset_cmd pointer in the IOA
6309 * config struct is not this adapter's we are doing nested
6310 * resets and fail_all_ops will take care of freeing the
6311 * command block.
6312 *
6313 * Return value:
6314 * none
6315 **/
6316 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6317 unsigned long timeout)
6318 {
6319 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6320 ipr_cmd->done = ipr_reset_ioa_job;
6321
6322 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6323 ipr_cmd->timer.expires = jiffies + timeout;
6324 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6325 add_timer(&ipr_cmd->timer);
6326 }
6327
6328 /**
6329 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6330 * @ioa_cfg: ioa cfg struct
6331 *
6332 * Return value:
6333 * nothing
6334 **/
6335 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6336 {
6337 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6338
6339 /* Initialize Host RRQ pointers */
6340 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6341 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6342 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6343 ioa_cfg->toggle_bit = 1;
6344
6345 /* Zero out config table */
6346 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6347 }
6348
6349 /**
6350 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6351 * @ipr_cmd: ipr command struct
6352 *
6353 * This function reinitializes some control blocks and
6354 * enables destructive diagnostics on the adapter.
6355 *
6356 * Return value:
6357 * IPR_RC_JOB_RETURN
6358 **/
6359 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6360 {
6361 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6362 volatile u32 int_reg;
6363
6364 ENTER;
6365 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6366 ipr_init_ioa_mem(ioa_cfg);
6367
6368 ioa_cfg->allow_interrupts = 1;
6369 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6370
6371 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6372 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6373 ioa_cfg->regs.clr_interrupt_mask_reg);
6374 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6375 return IPR_RC_JOB_CONTINUE;
6376 }
6377
6378 /* Enable destructive diagnostics on IOA */
6379 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6380
6381 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6382 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6383
6384 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6385
6386 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6387 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6388 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6389 ipr_cmd->done = ipr_reset_ioa_job;
6390 add_timer(&ipr_cmd->timer);
6391 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6392
6393 LEAVE;
6394 return IPR_RC_JOB_RETURN;
6395 }
6396
6397 /**
6398 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6399 * @ipr_cmd: ipr command struct
6400 *
6401 * This function is invoked when an adapter dump has run out
6402 * of processing time.
6403 *
6404 * Return value:
6405 * IPR_RC_JOB_CONTINUE
6406 **/
6407 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6408 {
6409 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6410
6411 if (ioa_cfg->sdt_state == GET_DUMP)
6412 ioa_cfg->sdt_state = ABORT_DUMP;
6413
6414 ipr_cmd->job_step = ipr_reset_alert;
6415
6416 return IPR_RC_JOB_CONTINUE;
6417 }
6418
6419 /**
6420 * ipr_unit_check_no_data - Log a unit check/no data error log
6421 * @ioa_cfg: ioa config struct
6422 *
6423 * Logs an error indicating the adapter unit checked, but for some
6424 * reason, we were unable to fetch the unit check buffer.
6425 *
6426 * Return value:
6427 * nothing
6428 **/
6429 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6430 {
6431 ioa_cfg->errors_logged++;
6432 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6433 }
6434
6435 /**
6436 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6437 * @ioa_cfg: ioa config struct
6438 *
6439 * Fetches the unit check buffer from the adapter by clocking the data
6440 * through the mailbox register.
6441 *
6442 * Return value:
6443 * nothing
6444 **/
6445 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6446 {
6447 unsigned long mailbox;
6448 struct ipr_hostrcb *hostrcb;
6449 struct ipr_uc_sdt sdt;
6450 int rc, length;
6451 u32 ioasc;
6452
6453 mailbox = readl(ioa_cfg->ioa_mailbox);
6454
6455 if (!ipr_sdt_is_fmt2(mailbox)) {
6456 ipr_unit_check_no_data(ioa_cfg);
6457 return;
6458 }
6459
6460 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6461 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6462 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6463
6464 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6465 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6466 ipr_unit_check_no_data(ioa_cfg);
6467 return;
6468 }
6469
6470 /* Find length of the first sdt entry (UC buffer) */
6471 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6472 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6473
6474 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6475 struct ipr_hostrcb, queue);
6476 list_del(&hostrcb->queue);
6477 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6478
6479 rc = ipr_get_ldump_data_section(ioa_cfg,
6480 be32_to_cpu(sdt.entry[0].bar_str_offset),
6481 (__be32 *)&hostrcb->hcam,
6482 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6483
6484 if (!rc) {
6485 ipr_handle_log_data(ioa_cfg, hostrcb);
6486 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6487 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6488 ioa_cfg->sdt_state == GET_DUMP)
6489 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6490 } else
6491 ipr_unit_check_no_data(ioa_cfg);
6492
6493 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6494 }
6495
6496 /**
6497 * ipr_reset_restore_cfg_space - Restore PCI config space.
6498 * @ipr_cmd: ipr command struct
6499 *
6500 * Description: This function restores the saved PCI config space of
6501 * the adapter, fails all outstanding ops back to the callers, and
6502 * fetches the dump/unit check if applicable to this reset.
6503 *
6504 * Return value:
6505 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6506 **/
6507 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6508 {
6509 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6510 int rc;
6511
6512 ENTER;
6513 rc = pci_restore_state(ioa_cfg->pdev);
6514
6515 if (rc != PCIBIOS_SUCCESSFUL) {
6516 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6517 return IPR_RC_JOB_CONTINUE;
6518 }
6519
6520 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6521 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6522 return IPR_RC_JOB_CONTINUE;
6523 }
6524
6525 ipr_fail_all_ops(ioa_cfg);
6526
6527 if (ioa_cfg->ioa_unit_checked) {
6528 ioa_cfg->ioa_unit_checked = 0;
6529 ipr_get_unit_check_buffer(ioa_cfg);
6530 ipr_cmd->job_step = ipr_reset_alert;
6531 ipr_reset_start_timer(ipr_cmd, 0);
6532 return IPR_RC_JOB_RETURN;
6533 }
6534
6535 if (ioa_cfg->in_ioa_bringdown) {
6536 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6537 } else {
6538 ipr_cmd->job_step = ipr_reset_enable_ioa;
6539
6540 if (GET_DUMP == ioa_cfg->sdt_state) {
6541 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6542 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6543 schedule_work(&ioa_cfg->work_q);
6544 return IPR_RC_JOB_RETURN;
6545 }
6546 }
6547
6548 ENTER;
6549 return IPR_RC_JOB_CONTINUE;
6550 }
6551
6552 /**
6553 * ipr_reset_bist_done - BIST has completed on the adapter.
6554 * @ipr_cmd: ipr command struct
6555 *
6556 * Description: Unblock config space and resume the reset process.
6557 *
6558 * Return value:
6559 * IPR_RC_JOB_CONTINUE
6560 **/
6561 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6562 {
6563 ENTER;
6564 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6565 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6566 LEAVE;
6567 return IPR_RC_JOB_CONTINUE;
6568 }
6569
6570 /**
6571 * ipr_reset_start_bist - Run BIST on the adapter.
6572 * @ipr_cmd: ipr command struct
6573 *
6574 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6575 *
6576 * Return value:
6577 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6578 **/
6579 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6580 {
6581 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6582 int rc;
6583
6584 ENTER;
6585 pci_block_user_cfg_access(ioa_cfg->pdev);
6586 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6587
6588 if (rc != PCIBIOS_SUCCESSFUL) {
6589 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6590 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6591 rc = IPR_RC_JOB_CONTINUE;
6592 } else {
6593 ipr_cmd->job_step = ipr_reset_bist_done;
6594 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6595 rc = IPR_RC_JOB_RETURN;
6596 }
6597
6598 LEAVE;
6599 return rc;
6600 }
6601
6602 /**
6603 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6604 * @ipr_cmd: ipr command struct
6605 *
6606 * Description: This clears PCI reset to the adapter and delays two seconds.
6607 *
6608 * Return value:
6609 * IPR_RC_JOB_RETURN
6610 **/
6611 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6612 {
6613 ENTER;
6614 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6615 ipr_cmd->job_step = ipr_reset_bist_done;
6616 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6617 LEAVE;
6618 return IPR_RC_JOB_RETURN;
6619 }
6620
6621 /**
6622 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6623 * @ipr_cmd: ipr command struct
6624 *
6625 * Description: This asserts PCI reset to the adapter.
6626 *
6627 * Return value:
6628 * IPR_RC_JOB_RETURN
6629 **/
6630 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6631 {
6632 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6633 struct pci_dev *pdev = ioa_cfg->pdev;
6634
6635 ENTER;
6636 pci_block_user_cfg_access(pdev);
6637 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6638 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6639 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6640 LEAVE;
6641 return IPR_RC_JOB_RETURN;
6642 }
6643
6644 /**
6645 * ipr_reset_allowed - Query whether or not IOA can be reset
6646 * @ioa_cfg: ioa config struct
6647 *
6648 * Return value:
6649 * 0 if reset not allowed / non-zero if reset is allowed
6650 **/
6651 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6652 {
6653 volatile u32 temp_reg;
6654
6655 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6656 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6657 }
6658
6659 /**
6660 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6661 * @ipr_cmd: ipr command struct
6662 *
6663 * Description: This function waits for adapter permission to run BIST,
6664 * then runs BIST. If the adapter does not give permission after a
6665 * reasonable time, we will reset the adapter anyway. The impact of
6666 * resetting the adapter without warning the adapter is the risk of
6667 * losing the persistent error log on the adapter. If the adapter is
6668 * reset while it is writing to the flash on the adapter, the flash
6669 * segment will have bad ECC and be zeroed.
6670 *
6671 * Return value:
6672 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6673 **/
6674 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6675 {
6676 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6677 int rc = IPR_RC_JOB_RETURN;
6678
6679 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6680 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6681 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6682 } else {
6683 ipr_cmd->job_step = ioa_cfg->reset;
6684 rc = IPR_RC_JOB_CONTINUE;
6685 }
6686
6687 return rc;
6688 }
6689
6690 /**
6691 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6692 * @ipr_cmd: ipr command struct
6693 *
6694 * Description: This function alerts the adapter that it will be reset.
6695 * If memory space is not currently enabled, proceed directly
6696 * to running BIST on the adapter. The timer must always be started
6697 * so we guarantee we do not run BIST from ipr_isr.
6698 *
6699 * Return value:
6700 * IPR_RC_JOB_RETURN
6701 **/
6702 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6703 {
6704 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6705 u16 cmd_reg;
6706 int rc;
6707
6708 ENTER;
6709 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6710
6711 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6712 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6713 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6714 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6715 } else {
6716 ipr_cmd->job_step = ioa_cfg->reset;
6717 }
6718
6719 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6720 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6721
6722 LEAVE;
6723 return IPR_RC_JOB_RETURN;
6724 }
6725
6726 /**
6727 * ipr_reset_ucode_download_done - Microcode download completion
6728 * @ipr_cmd: ipr command struct
6729 *
6730 * Description: This function unmaps the microcode download buffer.
6731 *
6732 * Return value:
6733 * IPR_RC_JOB_CONTINUE
6734 **/
6735 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6736 {
6737 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6738 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6739
6740 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6741 sglist->num_sg, DMA_TO_DEVICE);
6742
6743 ipr_cmd->job_step = ipr_reset_alert;
6744 return IPR_RC_JOB_CONTINUE;
6745 }
6746
6747 /**
6748 * ipr_reset_ucode_download - Download microcode to the adapter
6749 * @ipr_cmd: ipr command struct
6750 *
6751 * Description: This function checks to see if it there is microcode
6752 * to download to the adapter. If there is, a download is performed.
6753 *
6754 * Return value:
6755 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6756 **/
6757 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6758 {
6759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6760 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6761
6762 ENTER;
6763 ipr_cmd->job_step = ipr_reset_alert;
6764
6765 if (!sglist)
6766 return IPR_RC_JOB_CONTINUE;
6767
6768 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6769 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6770 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6771 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6772 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6773 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6774 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6775
6776 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6777 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6778
6779 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6780 IPR_WRITE_BUFFER_TIMEOUT);
6781
6782 LEAVE;
6783 return IPR_RC_JOB_RETURN;
6784 }
6785
6786 /**
6787 * ipr_reset_shutdown_ioa - Shutdown the adapter
6788 * @ipr_cmd: ipr command struct
6789 *
6790 * Description: This function issues an adapter shutdown of the
6791 * specified type to the specified adapter as part of the
6792 * adapter reset job.
6793 *
6794 * Return value:
6795 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6796 **/
6797 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6798 {
6799 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6800 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6801 unsigned long timeout;
6802 int rc = IPR_RC_JOB_CONTINUE;
6803
6804 ENTER;
6805 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6806 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6807 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6808 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6809 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6810
6811 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6812 timeout = IPR_SHUTDOWN_TIMEOUT;
6813 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6814 timeout = IPR_INTERNAL_TIMEOUT;
6815 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6816 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
6817 else
6818 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6819
6820 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6821
6822 rc = IPR_RC_JOB_RETURN;
6823 ipr_cmd->job_step = ipr_reset_ucode_download;
6824 } else
6825 ipr_cmd->job_step = ipr_reset_alert;
6826
6827 LEAVE;
6828 return rc;
6829 }
6830
6831 /**
6832 * ipr_reset_ioa_job - Adapter reset job
6833 * @ipr_cmd: ipr command struct
6834 *
6835 * Description: This function is the job router for the adapter reset job.
6836 *
6837 * Return value:
6838 * none
6839 **/
6840 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6841 {
6842 u32 rc, ioasc;
6843 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6844
6845 do {
6846 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6847
6848 if (ioa_cfg->reset_cmd != ipr_cmd) {
6849 /*
6850 * We are doing nested adapter resets and this is
6851 * not the current reset job.
6852 */
6853 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6854 return;
6855 }
6856
6857 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6858 rc = ipr_cmd->job_step_failed(ipr_cmd);
6859 if (rc == IPR_RC_JOB_RETURN)
6860 return;
6861 }
6862
6863 ipr_reinit_ipr_cmnd(ipr_cmd);
6864 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6865 rc = ipr_cmd->job_step(ipr_cmd);
6866 } while(rc == IPR_RC_JOB_CONTINUE);
6867 }
6868
6869 /**
6870 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6871 * @ioa_cfg: ioa config struct
6872 * @job_step: first job step of reset job
6873 * @shutdown_type: shutdown type
6874 *
6875 * Description: This function will initiate the reset of the given adapter
6876 * starting at the selected job step.
6877 * If the caller needs to wait on the completion of the reset,
6878 * the caller must sleep on the reset_wait_q.
6879 *
6880 * Return value:
6881 * none
6882 **/
6883 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6884 int (*job_step) (struct ipr_cmnd *),
6885 enum ipr_shutdown_type shutdown_type)
6886 {
6887 struct ipr_cmnd *ipr_cmd;
6888
6889 ioa_cfg->in_reset_reload = 1;
6890 ioa_cfg->allow_cmds = 0;
6891 scsi_block_requests(ioa_cfg->host);
6892
6893 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6894 ioa_cfg->reset_cmd = ipr_cmd;
6895 ipr_cmd->job_step = job_step;
6896 ipr_cmd->u.shutdown_type = shutdown_type;
6897
6898 ipr_reset_ioa_job(ipr_cmd);
6899 }
6900
6901 /**
6902 * ipr_initiate_ioa_reset - Initiate an adapter reset
6903 * @ioa_cfg: ioa config struct
6904 * @shutdown_type: shutdown type
6905 *
6906 * Description: This function will initiate the reset of the given adapter.
6907 * If the caller needs to wait on the completion of the reset,
6908 * the caller must sleep on the reset_wait_q.
6909 *
6910 * Return value:
6911 * none
6912 **/
6913 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6914 enum ipr_shutdown_type shutdown_type)
6915 {
6916 if (ioa_cfg->ioa_is_dead)
6917 return;
6918
6919 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6920 ioa_cfg->sdt_state = ABORT_DUMP;
6921
6922 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6923 dev_err(&ioa_cfg->pdev->dev,
6924 "IOA taken offline - error recovery failed\n");
6925
6926 ioa_cfg->reset_retries = 0;
6927 ioa_cfg->ioa_is_dead = 1;
6928
6929 if (ioa_cfg->in_ioa_bringdown) {
6930 ioa_cfg->reset_cmd = NULL;
6931 ioa_cfg->in_reset_reload = 0;
6932 ipr_fail_all_ops(ioa_cfg);
6933 wake_up_all(&ioa_cfg->reset_wait_q);
6934
6935 spin_unlock_irq(ioa_cfg->host->host_lock);
6936 scsi_unblock_requests(ioa_cfg->host);
6937 spin_lock_irq(ioa_cfg->host->host_lock);
6938 return;
6939 } else {
6940 ioa_cfg->in_ioa_bringdown = 1;
6941 shutdown_type = IPR_SHUTDOWN_NONE;
6942 }
6943 }
6944
6945 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6946 shutdown_type);
6947 }
6948
6949 /**
6950 * ipr_reset_freeze - Hold off all I/O activity
6951 * @ipr_cmd: ipr command struct
6952 *
6953 * Description: If the PCI slot is frozen, hold off all I/O
6954 * activity; then, as soon as the slot is available again,
6955 * initiate an adapter reset.
6956 */
6957 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6958 {
6959 /* Disallow new interrupts, avoid loop */
6960 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6961 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6962 ipr_cmd->done = ipr_reset_ioa_job;
6963 return IPR_RC_JOB_RETURN;
6964 }
6965
6966 /**
6967 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6968 * @pdev: PCI device struct
6969 *
6970 * Description: This routine is called to tell us that the PCI bus
6971 * is down. Can't do anything here, except put the device driver
6972 * into a holding pattern, waiting for the PCI bus to come back.
6973 */
6974 static void ipr_pci_frozen(struct pci_dev *pdev)
6975 {
6976 unsigned long flags = 0;
6977 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6978
6979 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6980 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6981 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6982 }
6983
6984 /**
6985 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6986 * @pdev: PCI device struct
6987 *
6988 * Description: This routine is called by the pci error recovery
6989 * code after the PCI slot has been reset, just before we
6990 * should resume normal operations.
6991 */
6992 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6993 {
6994 unsigned long flags = 0;
6995 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6996
6997 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6998 if (ioa_cfg->needs_warm_reset)
6999 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7000 else
7001 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
7002 IPR_SHUTDOWN_NONE);
7003 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7004 return PCI_ERS_RESULT_RECOVERED;
7005 }
7006
7007 /**
7008 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7009 * @pdev: PCI device struct
7010 *
7011 * Description: This routine is called when the PCI bus has
7012 * permanently failed.
7013 */
7014 static void ipr_pci_perm_failure(struct pci_dev *pdev)
7015 {
7016 unsigned long flags = 0;
7017 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7018
7019 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7020 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7021 ioa_cfg->sdt_state = ABORT_DUMP;
7022 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7023 ioa_cfg->in_ioa_bringdown = 1;
7024 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7026 }
7027
7028 /**
7029 * ipr_pci_error_detected - Called when a PCI error is detected.
7030 * @pdev: PCI device struct
7031 * @state: PCI channel state
7032 *
7033 * Description: Called when a PCI error is detected.
7034 *
7035 * Return value:
7036 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7037 */
7038 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7039 pci_channel_state_t state)
7040 {
7041 switch (state) {
7042 case pci_channel_io_frozen:
7043 ipr_pci_frozen(pdev);
7044 return PCI_ERS_RESULT_NEED_RESET;
7045 case pci_channel_io_perm_failure:
7046 ipr_pci_perm_failure(pdev);
7047 return PCI_ERS_RESULT_DISCONNECT;
7048 break;
7049 default:
7050 break;
7051 }
7052 return PCI_ERS_RESULT_NEED_RESET;
7053 }
7054
7055 /**
7056 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7057 * @ioa_cfg: ioa cfg struct
7058 *
7059 * Description: This is the second phase of adapter intialization
7060 * This function takes care of initilizing the adapter to the point
7061 * where it can accept new commands.
7062
7063 * Return value:
7064 * 0 on success / -EIO on failure
7065 **/
7066 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7067 {
7068 int rc = 0;
7069 unsigned long host_lock_flags = 0;
7070
7071 ENTER;
7072 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7073 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
7074 if (ioa_cfg->needs_hard_reset) {
7075 ioa_cfg->needs_hard_reset = 0;
7076 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7077 } else
7078 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7079 IPR_SHUTDOWN_NONE);
7080
7081 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7082 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7083 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7084
7085 if (ioa_cfg->ioa_is_dead) {
7086 rc = -EIO;
7087 } else if (ipr_invalid_adapter(ioa_cfg)) {
7088 if (!ipr_testmode)
7089 rc = -EIO;
7090
7091 dev_err(&ioa_cfg->pdev->dev,
7092 "Adapter not supported in this hardware configuration.\n");
7093 }
7094
7095 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7096
7097 LEAVE;
7098 return rc;
7099 }
7100
7101 /**
7102 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7103 * @ioa_cfg: ioa config struct
7104 *
7105 * Return value:
7106 * none
7107 **/
7108 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7109 {
7110 int i;
7111
7112 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7113 if (ioa_cfg->ipr_cmnd_list[i])
7114 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7115 ioa_cfg->ipr_cmnd_list[i],
7116 ioa_cfg->ipr_cmnd_list_dma[i]);
7117
7118 ioa_cfg->ipr_cmnd_list[i] = NULL;
7119 }
7120
7121 if (ioa_cfg->ipr_cmd_pool)
7122 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7123
7124 ioa_cfg->ipr_cmd_pool = NULL;
7125 }
7126
7127 /**
7128 * ipr_free_mem - Frees memory allocated for an adapter
7129 * @ioa_cfg: ioa cfg struct
7130 *
7131 * Return value:
7132 * nothing
7133 **/
7134 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7135 {
7136 int i;
7137
7138 kfree(ioa_cfg->res_entries);
7139 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7140 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7141 ipr_free_cmd_blks(ioa_cfg);
7142 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7143 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7144 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7145 ioa_cfg->cfg_table,
7146 ioa_cfg->cfg_table_dma);
7147
7148 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7149 pci_free_consistent(ioa_cfg->pdev,
7150 sizeof(struct ipr_hostrcb),
7151 ioa_cfg->hostrcb[i],
7152 ioa_cfg->hostrcb_dma[i]);
7153 }
7154
7155 ipr_free_dump(ioa_cfg);
7156 kfree(ioa_cfg->trace);
7157 }
7158
7159 /**
7160 * ipr_free_all_resources - Free all allocated resources for an adapter.
7161 * @ipr_cmd: ipr command struct
7162 *
7163 * This function frees all allocated resources for the
7164 * specified adapter.
7165 *
7166 * Return value:
7167 * none
7168 **/
7169 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7170 {
7171 struct pci_dev *pdev = ioa_cfg->pdev;
7172
7173 ENTER;
7174 free_irq(pdev->irq, ioa_cfg);
7175 iounmap(ioa_cfg->hdw_dma_regs);
7176 pci_release_regions(pdev);
7177 ipr_free_mem(ioa_cfg);
7178 scsi_host_put(ioa_cfg->host);
7179 pci_disable_device(pdev);
7180 LEAVE;
7181 }
7182
7183 /**
7184 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7185 * @ioa_cfg: ioa config struct
7186 *
7187 * Return value:
7188 * 0 on success / -ENOMEM on allocation failure
7189 **/
7190 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7191 {
7192 struct ipr_cmnd *ipr_cmd;
7193 struct ipr_ioarcb *ioarcb;
7194 dma_addr_t dma_addr;
7195 int i;
7196
7197 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7198 sizeof(struct ipr_cmnd), 8, 0);
7199
7200 if (!ioa_cfg->ipr_cmd_pool)
7201 return -ENOMEM;
7202
7203 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7204 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
7205
7206 if (!ipr_cmd) {
7207 ipr_free_cmd_blks(ioa_cfg);
7208 return -ENOMEM;
7209 }
7210
7211 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7212 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7213 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7214
7215 ioarcb = &ipr_cmd->ioarcb;
7216 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7217 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7218 ioarcb->write_ioadl_addr =
7219 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7220 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7221 ioarcb->ioasa_host_pci_addr =
7222 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7223 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7224 ipr_cmd->cmd_index = i;
7225 ipr_cmd->ioa_cfg = ioa_cfg;
7226 ipr_cmd->sense_buffer_dma = dma_addr +
7227 offsetof(struct ipr_cmnd, sense_buffer);
7228
7229 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7230 }
7231
7232 return 0;
7233 }
7234
7235 /**
7236 * ipr_alloc_mem - Allocate memory for an adapter
7237 * @ioa_cfg: ioa config struct
7238 *
7239 * Return value:
7240 * 0 on success / non-zero for error
7241 **/
7242 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7243 {
7244 struct pci_dev *pdev = ioa_cfg->pdev;
7245 int i, rc = -ENOMEM;
7246
7247 ENTER;
7248 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7249 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7250
7251 if (!ioa_cfg->res_entries)
7252 goto out;
7253
7254 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7255 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7256
7257 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7258 sizeof(struct ipr_misc_cbs),
7259 &ioa_cfg->vpd_cbs_dma);
7260
7261 if (!ioa_cfg->vpd_cbs)
7262 goto out_free_res_entries;
7263
7264 if (ipr_alloc_cmd_blks(ioa_cfg))
7265 goto out_free_vpd_cbs;
7266
7267 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7268 sizeof(u32) * IPR_NUM_CMD_BLKS,
7269 &ioa_cfg->host_rrq_dma);
7270
7271 if (!ioa_cfg->host_rrq)
7272 goto out_ipr_free_cmd_blocks;
7273
7274 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7275 sizeof(struct ipr_config_table),
7276 &ioa_cfg->cfg_table_dma);
7277
7278 if (!ioa_cfg->cfg_table)
7279 goto out_free_host_rrq;
7280
7281 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7282 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7283 sizeof(struct ipr_hostrcb),
7284 &ioa_cfg->hostrcb_dma[i]);
7285
7286 if (!ioa_cfg->hostrcb[i])
7287 goto out_free_hostrcb_dma;
7288
7289 ioa_cfg->hostrcb[i]->hostrcb_dma =
7290 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7291 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7292 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7293 }
7294
7295 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7296 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7297
7298 if (!ioa_cfg->trace)
7299 goto out_free_hostrcb_dma;
7300
7301 rc = 0;
7302 out:
7303 LEAVE;
7304 return rc;
7305
7306 out_free_hostrcb_dma:
7307 while (i-- > 0) {
7308 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7309 ioa_cfg->hostrcb[i],
7310 ioa_cfg->hostrcb_dma[i]);
7311 }
7312 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7313 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7314 out_free_host_rrq:
7315 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7316 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7317 out_ipr_free_cmd_blocks:
7318 ipr_free_cmd_blks(ioa_cfg);
7319 out_free_vpd_cbs:
7320 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7321 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7322 out_free_res_entries:
7323 kfree(ioa_cfg->res_entries);
7324 goto out;
7325 }
7326
7327 /**
7328 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7329 * @ioa_cfg: ioa config struct
7330 *
7331 * Return value:
7332 * none
7333 **/
7334 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7335 {
7336 int i;
7337
7338 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7339 ioa_cfg->bus_attr[i].bus = i;
7340 ioa_cfg->bus_attr[i].qas_enabled = 0;
7341 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7342 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7343 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7344 else
7345 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7346 }
7347 }
7348
7349 /**
7350 * ipr_init_ioa_cfg - Initialize IOA config struct
7351 * @ioa_cfg: ioa config struct
7352 * @host: scsi host struct
7353 * @pdev: PCI dev struct
7354 *
7355 * Return value:
7356 * none
7357 **/
7358 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7359 struct Scsi_Host *host, struct pci_dev *pdev)
7360 {
7361 const struct ipr_interrupt_offsets *p;
7362 struct ipr_interrupts *t;
7363 void __iomem *base;
7364
7365 ioa_cfg->host = host;
7366 ioa_cfg->pdev = pdev;
7367 ioa_cfg->log_level = ipr_log_level;
7368 ioa_cfg->doorbell = IPR_DOORBELL;
7369 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7370 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7371 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7372 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7373 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7374 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7375 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7376 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7377
7378 INIT_LIST_HEAD(&ioa_cfg->free_q);
7379 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7380 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7381 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7382 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7383 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7384 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7385 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7386 ioa_cfg->sdt_state = INACTIVE;
7387 if (ipr_enable_cache)
7388 ioa_cfg->cache_state = CACHE_ENABLED;
7389 else
7390 ioa_cfg->cache_state = CACHE_DISABLED;
7391
7392 ipr_initialize_bus_attr(ioa_cfg);
7393
7394 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7395 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7396 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7397 host->unique_id = host->host_no;
7398 host->max_cmd_len = IPR_MAX_CDB_LEN;
7399 pci_set_drvdata(pdev, ioa_cfg);
7400
7401 p = &ioa_cfg->chip_cfg->regs;
7402 t = &ioa_cfg->regs;
7403 base = ioa_cfg->hdw_dma_regs;
7404
7405 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7406 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7407 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7408 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7409 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7410 t->ioarrin_reg = base + p->ioarrin_reg;
7411 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7412 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7413 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7414 }
7415
7416 /**
7417 * ipr_get_chip_cfg - Find adapter chip configuration
7418 * @dev_id: PCI device id struct
7419 *
7420 * Return value:
7421 * ptr to chip config on success / NULL on failure
7422 **/
7423 static const struct ipr_chip_cfg_t * __devinit
7424 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7425 {
7426 int i;
7427
7428 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7429 if (ipr_chip[i].vendor == dev_id->vendor &&
7430 ipr_chip[i].device == dev_id->device)
7431 return ipr_chip[i].cfg;
7432 return NULL;
7433 }
7434
7435 /**
7436 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7437 * @pdev: PCI device struct
7438 * @dev_id: PCI device id struct
7439 *
7440 * Return value:
7441 * 0 on success / non-zero on failure
7442 **/
7443 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7444 const struct pci_device_id *dev_id)
7445 {
7446 struct ipr_ioa_cfg *ioa_cfg;
7447 struct Scsi_Host *host;
7448 unsigned long ipr_regs_pci;
7449 void __iomem *ipr_regs;
7450 int rc = PCIBIOS_SUCCESSFUL;
7451 volatile u32 mask, uproc, interrupts;
7452
7453 ENTER;
7454
7455 if ((rc = pci_enable_device(pdev))) {
7456 dev_err(&pdev->dev, "Cannot enable adapter\n");
7457 goto out;
7458 }
7459
7460 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7461
7462 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7463
7464 if (!host) {
7465 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7466 rc = -ENOMEM;
7467 goto out_disable;
7468 }
7469
7470 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7471 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7472 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7473 sata_port_info.flags, &ipr_sata_ops);
7474
7475 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7476
7477 if (!ioa_cfg->chip_cfg) {
7478 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7479 dev_id->vendor, dev_id->device);
7480 goto out_scsi_host_put;
7481 }
7482
7483 if (ipr_transop_timeout)
7484 ioa_cfg->transop_timeout = ipr_transop_timeout;
7485 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7486 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7487 else
7488 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7489
7490 ioa_cfg->revid = pdev->revision;
7491
7492 ipr_regs_pci = pci_resource_start(pdev, 0);
7493
7494 rc = pci_request_regions(pdev, IPR_NAME);
7495 if (rc < 0) {
7496 dev_err(&pdev->dev,
7497 "Couldn't register memory range of registers\n");
7498 goto out_scsi_host_put;
7499 }
7500
7501 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7502
7503 if (!ipr_regs) {
7504 dev_err(&pdev->dev,
7505 "Couldn't map memory range of registers\n");
7506 rc = -ENOMEM;
7507 goto out_release_regions;
7508 }
7509
7510 ioa_cfg->hdw_dma_regs = ipr_regs;
7511 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7512 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7513
7514 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7515
7516 pci_set_master(pdev);
7517
7518 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7519 if (rc < 0) {
7520 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7521 goto cleanup_nomem;
7522 }
7523
7524 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7525 ioa_cfg->chip_cfg->cache_line_size);
7526
7527 if (rc != PCIBIOS_SUCCESSFUL) {
7528 dev_err(&pdev->dev, "Write of cache line size failed\n");
7529 rc = -EIO;
7530 goto cleanup_nomem;
7531 }
7532
7533 /* Save away PCI config space for use following IOA reset */
7534 rc = pci_save_state(pdev);
7535
7536 if (rc != PCIBIOS_SUCCESSFUL) {
7537 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7538 rc = -EIO;
7539 goto cleanup_nomem;
7540 }
7541
7542 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7543 goto cleanup_nomem;
7544
7545 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7546 goto cleanup_nomem;
7547
7548 rc = ipr_alloc_mem(ioa_cfg);
7549 if (rc < 0) {
7550 dev_err(&pdev->dev,
7551 "Couldn't allocate enough memory for device driver!\n");
7552 goto cleanup_nomem;
7553 }
7554
7555 /*
7556 * If HRRQ updated interrupt is not masked, or reset alert is set,
7557 * the card is in an unknown state and needs a hard reset
7558 */
7559 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7560 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
7561 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7562 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7563 ioa_cfg->needs_hard_reset = 1;
7564 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7565 ioa_cfg->needs_hard_reset = 1;
7566 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7567 ioa_cfg->ioa_unit_checked = 1;
7568
7569 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7570 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7571
7572 if (rc) {
7573 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7574 pdev->irq, rc);
7575 goto cleanup_nolog;
7576 }
7577
7578 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7579 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7580 ioa_cfg->needs_warm_reset = 1;
7581 ioa_cfg->reset = ipr_reset_slot_reset;
7582 } else
7583 ioa_cfg->reset = ipr_reset_start_bist;
7584
7585 spin_lock(&ipr_driver_lock);
7586 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7587 spin_unlock(&ipr_driver_lock);
7588
7589 LEAVE;
7590 out:
7591 return rc;
7592
7593 cleanup_nolog:
7594 ipr_free_mem(ioa_cfg);
7595 cleanup_nomem:
7596 iounmap(ipr_regs);
7597 out_release_regions:
7598 pci_release_regions(pdev);
7599 out_scsi_host_put:
7600 scsi_host_put(host);
7601 out_disable:
7602 pci_disable_device(pdev);
7603 goto out;
7604 }
7605
7606 /**
7607 * ipr_scan_vsets - Scans for VSET devices
7608 * @ioa_cfg: ioa config struct
7609 *
7610 * Description: Since the VSET resources do not follow SAM in that we can have
7611 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7612 *
7613 * Return value:
7614 * none
7615 **/
7616 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7617 {
7618 int target, lun;
7619
7620 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7621 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7622 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7623 }
7624
7625 /**
7626 * ipr_initiate_ioa_bringdown - Bring down an adapter
7627 * @ioa_cfg: ioa config struct
7628 * @shutdown_type: shutdown type
7629 *
7630 * Description: This function will initiate bringing down the adapter.
7631 * This consists of issuing an IOA shutdown to the adapter
7632 * to flush the cache, and running BIST.
7633 * If the caller needs to wait on the completion of the reset,
7634 * the caller must sleep on the reset_wait_q.
7635 *
7636 * Return value:
7637 * none
7638 **/
7639 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7640 enum ipr_shutdown_type shutdown_type)
7641 {
7642 ENTER;
7643 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7644 ioa_cfg->sdt_state = ABORT_DUMP;
7645 ioa_cfg->reset_retries = 0;
7646 ioa_cfg->in_ioa_bringdown = 1;
7647 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7648 LEAVE;
7649 }
7650
7651 /**
7652 * __ipr_remove - Remove a single adapter
7653 * @pdev: pci device struct
7654 *
7655 * Adapter hot plug remove entry point.
7656 *
7657 * Return value:
7658 * none
7659 **/
7660 static void __ipr_remove(struct pci_dev *pdev)
7661 {
7662 unsigned long host_lock_flags = 0;
7663 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7664 ENTER;
7665
7666 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7667 while(ioa_cfg->in_reset_reload) {
7668 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7669 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7670 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7671 }
7672
7673 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7674
7675 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7676 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7677 flush_scheduled_work();
7678 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7679
7680 spin_lock(&ipr_driver_lock);
7681 list_del(&ioa_cfg->queue);
7682 spin_unlock(&ipr_driver_lock);
7683
7684 if (ioa_cfg->sdt_state == ABORT_DUMP)
7685 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7686 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7687
7688 ipr_free_all_resources(ioa_cfg);
7689
7690 LEAVE;
7691 }
7692
7693 /**
7694 * ipr_remove - IOA hot plug remove entry point
7695 * @pdev: pci device struct
7696 *
7697 * Adapter hot plug remove entry point.
7698 *
7699 * Return value:
7700 * none
7701 **/
7702 static void ipr_remove(struct pci_dev *pdev)
7703 {
7704 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7705
7706 ENTER;
7707
7708 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7709 &ipr_trace_attr);
7710 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7711 &ipr_dump_attr);
7712 scsi_remove_host(ioa_cfg->host);
7713
7714 __ipr_remove(pdev);
7715
7716 LEAVE;
7717 }
7718
7719 /**
7720 * ipr_probe - Adapter hot plug add entry point
7721 *
7722 * Return value:
7723 * 0 on success / non-zero on failure
7724 **/
7725 static int __devinit ipr_probe(struct pci_dev *pdev,
7726 const struct pci_device_id *dev_id)
7727 {
7728 struct ipr_ioa_cfg *ioa_cfg;
7729 int rc;
7730
7731 rc = ipr_probe_ioa(pdev, dev_id);
7732
7733 if (rc)
7734 return rc;
7735
7736 ioa_cfg = pci_get_drvdata(pdev);
7737 rc = ipr_probe_ioa_part2(ioa_cfg);
7738
7739 if (rc) {
7740 __ipr_remove(pdev);
7741 return rc;
7742 }
7743
7744 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7745
7746 if (rc) {
7747 __ipr_remove(pdev);
7748 return rc;
7749 }
7750
7751 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7752 &ipr_trace_attr);
7753
7754 if (rc) {
7755 scsi_remove_host(ioa_cfg->host);
7756 __ipr_remove(pdev);
7757 return rc;
7758 }
7759
7760 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7761 &ipr_dump_attr);
7762
7763 if (rc) {
7764 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7765 &ipr_trace_attr);
7766 scsi_remove_host(ioa_cfg->host);
7767 __ipr_remove(pdev);
7768 return rc;
7769 }
7770
7771 scsi_scan_host(ioa_cfg->host);
7772 ipr_scan_vsets(ioa_cfg);
7773 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7774 ioa_cfg->allow_ml_add_del = 1;
7775 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7776 schedule_work(&ioa_cfg->work_q);
7777 return 0;
7778 }
7779
7780 /**
7781 * ipr_shutdown - Shutdown handler.
7782 * @pdev: pci device struct
7783 *
7784 * This function is invoked upon system shutdown/reboot. It will issue
7785 * an adapter shutdown to the adapter to flush the write cache.
7786 *
7787 * Return value:
7788 * none
7789 **/
7790 static void ipr_shutdown(struct pci_dev *pdev)
7791 {
7792 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7793 unsigned long lock_flags = 0;
7794
7795 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7796 while(ioa_cfg->in_reset_reload) {
7797 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7798 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7799 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7800 }
7801
7802 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7804 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7805 }
7806
7807 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7808 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7809 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7810 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7811 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7812 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7813 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7814 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7815 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7816 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7817 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7818 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7819 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7820 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7821 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7822 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7823 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7824 IPR_USE_LONG_TRANSOP_TIMEOUT },
7825 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7826 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7827 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7828 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7829 IPR_USE_LONG_TRANSOP_TIMEOUT },
7830 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7831 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7832 IPR_USE_LONG_TRANSOP_TIMEOUT },
7833 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7834 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7835 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7836 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7837 IPR_USE_LONG_TRANSOP_TIMEOUT},
7838 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7839 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7840 IPR_USE_LONG_TRANSOP_TIMEOUT },
7841 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7842 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7843 IPR_USE_LONG_TRANSOP_TIMEOUT },
7844 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7845 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7846 IPR_USE_LONG_TRANSOP_TIMEOUT },
7847 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7848 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7849 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7850 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7851 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
7852 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7853 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7854 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7855 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7856 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7857 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7858 IPR_USE_LONG_TRANSOP_TIMEOUT },
7859 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7860 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7861 IPR_USE_LONG_TRANSOP_TIMEOUT },
7862 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7863 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7864 IPR_USE_LONG_TRANSOP_TIMEOUT },
7865 { }
7866 };
7867 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7868
7869 static struct pci_error_handlers ipr_err_handler = {
7870 .error_detected = ipr_pci_error_detected,
7871 .slot_reset = ipr_pci_slot_reset,
7872 };
7873
7874 static struct pci_driver ipr_driver = {
7875 .name = IPR_NAME,
7876 .id_table = ipr_pci_table,
7877 .probe = ipr_probe,
7878 .remove = ipr_remove,
7879 .shutdown = ipr_shutdown,
7880 .err_handler = &ipr_err_handler,
7881 .dynids.use_driver_data = 1
7882 };
7883
7884 /**
7885 * ipr_init - Module entry point
7886 *
7887 * Return value:
7888 * 0 on success / negative value on failure
7889 **/
7890 static int __init ipr_init(void)
7891 {
7892 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7893 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7894
7895 return pci_register_driver(&ipr_driver);
7896 }
7897
7898 /**
7899 * ipr_exit - Module unload
7900 *
7901 * Module unload entry point.
7902 *
7903 * Return value:
7904 * none
7905 **/
7906 static void __exit ipr_exit(void)
7907 {
7908 pci_unregister_driver(&ipr_driver);
7909 }
7910
7911 module_init(ipr_init);
7912 module_exit(ipr_exit);
WRT350N Kernel Patches