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[SCSI] aacraid: fix security weakness
[linux-2.6/mini2440.git] / drivers / scsi / ipr.c
blob0841df01bc19921d7d34f99d08116c0076b7954c
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 struct list_head ipr_ioa_head = LIST_HEAD_INIT(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 int len = qc->nbytes + qc->pad_len;
5144 struct scatterlist *sg;
5145
5146 if (len == 0)
5147 return;
5148
5149 if (qc->dma_dir == DMA_TO_DEVICE) {
5150 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5151 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5152 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5153 ioarcb->write_ioadl_len =
5154 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5155 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5156 ioadl_flags = IPR_IOADL_FLAGS_READ;
5157 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5158 ioarcb->read_ioadl_len =
5159 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5160 }
5161
5162 ata_for_each_sg(sg, qc) {
5163 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5164 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5165
5166 last_ioadl = ioadl;
5167 ioadl++;
5168 }
5169
5170 if (likely(last_ioadl))
5171 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5172 }
5173
5174 /**
5175 * ipr_qc_issue - Issue a SATA qc to a device
5176 * @qc: queued command
5177 *
5178 * Return value:
5179 * 0 if success
5180 **/
5181 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5182 {
5183 struct ata_port *ap = qc->ap;
5184 struct ipr_sata_port *sata_port = ap->private_data;
5185 struct ipr_resource_entry *res = sata_port->res;
5186 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5187 struct ipr_cmnd *ipr_cmd;
5188 struct ipr_ioarcb *ioarcb;
5189 struct ipr_ioarcb_ata_regs *regs;
5190
5191 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5192 return AC_ERR_SYSTEM;
5193
5194 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5195 ioarcb = &ipr_cmd->ioarcb;
5196 regs = &ioarcb->add_data.u.regs;
5197
5198 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5199 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5200
5201 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5202 ipr_cmd->qc = qc;
5203 ipr_cmd->done = ipr_sata_done;
5204 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5205 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5206 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5207 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5208 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5209
5210 ipr_build_ata_ioadl(ipr_cmd, qc);
5211 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5212 ipr_copy_sata_tf(regs, &qc->tf);
5213 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5214 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5215
5216 switch (qc->tf.protocol) {
5217 case ATA_PROT_NODATA:
5218 case ATA_PROT_PIO:
5219 break;
5220
5221 case ATA_PROT_DMA:
5222 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5223 break;
5224
5225 case ATA_PROT_ATAPI:
5226 case ATA_PROT_ATAPI_NODATA:
5227 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5228 break;
5229
5230 case ATA_PROT_ATAPI_DMA:
5231 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5232 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5233 break;
5234
5235 default:
5236 WARN_ON(1);
5237 return AC_ERR_INVALID;
5238 }
5239
5240 mb();
5241 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5242 ioa_cfg->regs.ioarrin_reg);
5243 return 0;
5244 }
5245
5246 /**
5247 * ipr_ata_check_status - Return last ATA status
5248 * @ap: ATA port
5249 *
5250 * Return value:
5251 * ATA status
5252 **/
5253 static u8 ipr_ata_check_status(struct ata_port *ap)
5254 {
5255 struct ipr_sata_port *sata_port = ap->private_data;
5256 return sata_port->ioasa.status;
5257 }
5258
5259 /**
5260 * ipr_ata_check_altstatus - Return last ATA altstatus
5261 * @ap: ATA port
5262 *
5263 * Return value:
5264 * Alt ATA status
5265 **/
5266 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5267 {
5268 struct ipr_sata_port *sata_port = ap->private_data;
5269 return sata_port->ioasa.alt_status;
5270 }
5271
5272 static struct ata_port_operations ipr_sata_ops = {
5273 .check_status = ipr_ata_check_status,
5274 .check_altstatus = ipr_ata_check_altstatus,
5275 .dev_select = ata_noop_dev_select,
5276 .phy_reset = ipr_ata_phy_reset,
5277 .post_internal_cmd = ipr_ata_post_internal,
5278 .tf_read = ipr_tf_read,
5279 .qc_prep = ata_noop_qc_prep,
5280 .qc_issue = ipr_qc_issue,
5281 .port_start = ata_sas_port_start,
5282 .port_stop = ata_sas_port_stop
5283 };
5284
5285 static struct ata_port_info sata_port_info = {
5286 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5287 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5288 .pio_mask = 0x10, /* pio4 */
5289 .mwdma_mask = 0x07,
5290 .udma_mask = 0x7f, /* udma0-6 */
5291 .port_ops = &ipr_sata_ops
5292 };
5293
5294 #ifdef CONFIG_PPC_PSERIES
5295 static const u16 ipr_blocked_processors[] = {
5296 PV_NORTHSTAR,
5297 PV_PULSAR,
5298 PV_POWER4,
5299 PV_ICESTAR,
5300 PV_SSTAR,
5301 PV_POWER4p,
5302 PV_630,
5303 PV_630p
5304 };
5305
5306 /**
5307 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5308 * @ioa_cfg: ioa cfg struct
5309 *
5310 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5311 * certain pSeries hardware. This function determines if the given
5312 * adapter is in one of these confgurations or not.
5313 *
5314 * Return value:
5315 * 1 if adapter is not supported / 0 if adapter is supported
5316 **/
5317 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5318 {
5319 int i;
5320
5321 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5322 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5323 if (__is_processor(ipr_blocked_processors[i]))
5324 return 1;
5325 }
5326 }
5327 return 0;
5328 }
5329 #else
5330 #define ipr_invalid_adapter(ioa_cfg) 0
5331 #endif
5332
5333 /**
5334 * ipr_ioa_bringdown_done - IOA bring down completion.
5335 * @ipr_cmd: ipr command struct
5336 *
5337 * This function processes the completion of an adapter bring down.
5338 * It wakes any reset sleepers.
5339 *
5340 * Return value:
5341 * IPR_RC_JOB_RETURN
5342 **/
5343 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5344 {
5345 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5346
5347 ENTER;
5348 ioa_cfg->in_reset_reload = 0;
5349 ioa_cfg->reset_retries = 0;
5350 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5351 wake_up_all(&ioa_cfg->reset_wait_q);
5352
5353 spin_unlock_irq(ioa_cfg->host->host_lock);
5354 scsi_unblock_requests(ioa_cfg->host);
5355 spin_lock_irq(ioa_cfg->host->host_lock);
5356 LEAVE;
5357
5358 return IPR_RC_JOB_RETURN;
5359 }
5360
5361 /**
5362 * ipr_ioa_reset_done - IOA reset completion.
5363 * @ipr_cmd: ipr command struct
5364 *
5365 * This function processes the completion of an adapter reset.
5366 * It schedules any necessary mid-layer add/removes and
5367 * wakes any reset sleepers.
5368 *
5369 * Return value:
5370 * IPR_RC_JOB_RETURN
5371 **/
5372 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5373 {
5374 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5375 struct ipr_resource_entry *res;
5376 struct ipr_hostrcb *hostrcb, *temp;
5377 int i = 0;
5378
5379 ENTER;
5380 ioa_cfg->in_reset_reload = 0;
5381 ioa_cfg->allow_cmds = 1;
5382 ioa_cfg->reset_cmd = NULL;
5383 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5384
5385 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5386 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5387 ipr_trace;
5388 break;
5389 }
5390 }
5391 schedule_work(&ioa_cfg->work_q);
5392
5393 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5394 list_del(&hostrcb->queue);
5395 if (i++ < IPR_NUM_LOG_HCAMS)
5396 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5397 else
5398 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5399 }
5400
5401 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
5402 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5403
5404 ioa_cfg->reset_retries = 0;
5405 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5406 wake_up_all(&ioa_cfg->reset_wait_q);
5407
5408 spin_unlock_irq(ioa_cfg->host->host_lock);
5409 scsi_unblock_requests(ioa_cfg->host);
5410 spin_lock_irq(ioa_cfg->host->host_lock);
5411
5412 if (!ioa_cfg->allow_cmds)
5413 scsi_block_requests(ioa_cfg->host);
5414
5415 LEAVE;
5416 return IPR_RC_JOB_RETURN;
5417 }
5418
5419 /**
5420 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5421 * @supported_dev: supported device struct
5422 * @vpids: vendor product id struct
5423 *
5424 * Return value:
5425 * none
5426 **/
5427 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5428 struct ipr_std_inq_vpids *vpids)
5429 {
5430 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5431 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5432 supported_dev->num_records = 1;
5433 supported_dev->data_length =
5434 cpu_to_be16(sizeof(struct ipr_supported_device));
5435 supported_dev->reserved = 0;
5436 }
5437
5438 /**
5439 * ipr_set_supported_devs - Send Set Supported Devices for a device
5440 * @ipr_cmd: ipr command struct
5441 *
5442 * This function send a Set Supported Devices to the adapter
5443 *
5444 * Return value:
5445 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5446 **/
5447 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5448 {
5449 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5450 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5451 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5452 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5453 struct ipr_resource_entry *res = ipr_cmd->u.res;
5454
5455 ipr_cmd->job_step = ipr_ioa_reset_done;
5456
5457 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5458 if (!ipr_is_scsi_disk(res))
5459 continue;
5460
5461 ipr_cmd->u.res = res;
5462 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5463
5464 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5465 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5466 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5467
5468 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5469 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5470 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5471
5472 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5473 sizeof(struct ipr_supported_device));
5474 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5475 offsetof(struct ipr_misc_cbs, supp_dev));
5476 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5477 ioarcb->write_data_transfer_length =
5478 cpu_to_be32(sizeof(struct ipr_supported_device));
5479
5480 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5481 IPR_SET_SUP_DEVICE_TIMEOUT);
5482
5483 ipr_cmd->job_step = ipr_set_supported_devs;
5484 return IPR_RC_JOB_RETURN;
5485 }
5486
5487 return IPR_RC_JOB_CONTINUE;
5488 }
5489
5490 /**
5491 * ipr_setup_write_cache - Disable write cache if needed
5492 * @ipr_cmd: ipr command struct
5493 *
5494 * This function sets up adapters write cache to desired setting
5495 *
5496 * Return value:
5497 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5498 **/
5499 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5500 {
5501 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5502
5503 ipr_cmd->job_step = ipr_set_supported_devs;
5504 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5505 struct ipr_resource_entry, queue);
5506
5507 if (ioa_cfg->cache_state != CACHE_DISABLED)
5508 return IPR_RC_JOB_CONTINUE;
5509
5510 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5511 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5512 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5513 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5514
5515 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5516
5517 return IPR_RC_JOB_RETURN;
5518 }
5519
5520 /**
5521 * ipr_get_mode_page - Locate specified mode page
5522 * @mode_pages: mode page buffer
5523 * @page_code: page code to find
5524 * @len: minimum required length for mode page
5525 *
5526 * Return value:
5527 * pointer to mode page / NULL on failure
5528 **/
5529 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5530 u32 page_code, u32 len)
5531 {
5532 struct ipr_mode_page_hdr *mode_hdr;
5533 u32 page_length;
5534 u32 length;
5535
5536 if (!mode_pages || (mode_pages->hdr.length == 0))
5537 return NULL;
5538
5539 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5540 mode_hdr = (struct ipr_mode_page_hdr *)
5541 (mode_pages->data + mode_pages->hdr.block_desc_len);
5542
5543 while (length) {
5544 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5545 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5546 return mode_hdr;
5547 break;
5548 } else {
5549 page_length = (sizeof(struct ipr_mode_page_hdr) +
5550 mode_hdr->page_length);
5551 length -= page_length;
5552 mode_hdr = (struct ipr_mode_page_hdr *)
5553 ((unsigned long)mode_hdr + page_length);
5554 }
5555 }
5556 return NULL;
5557 }
5558
5559 /**
5560 * ipr_check_term_power - Check for term power errors
5561 * @ioa_cfg: ioa config struct
5562 * @mode_pages: IOAFP mode pages buffer
5563 *
5564 * Check the IOAFP's mode page 28 for term power errors
5565 *
5566 * Return value:
5567 * nothing
5568 **/
5569 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5570 struct ipr_mode_pages *mode_pages)
5571 {
5572 int i;
5573 int entry_length;
5574 struct ipr_dev_bus_entry *bus;
5575 struct ipr_mode_page28 *mode_page;
5576
5577 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5578 sizeof(struct ipr_mode_page28));
5579
5580 entry_length = mode_page->entry_length;
5581
5582 bus = mode_page->bus;
5583
5584 for (i = 0; i < mode_page->num_entries; i++) {
5585 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5586 dev_err(&ioa_cfg->pdev->dev,
5587 "Term power is absent on scsi bus %d\n",
5588 bus->res_addr.bus);
5589 }
5590
5591 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5592 }
5593 }
5594
5595 /**
5596 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5597 * @ioa_cfg: ioa config struct
5598 *
5599 * Looks through the config table checking for SES devices. If
5600 * the SES device is in the SES table indicating a maximum SCSI
5601 * bus speed, the speed is limited for the bus.
5602 *
5603 * Return value:
5604 * none
5605 **/
5606 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5607 {
5608 u32 max_xfer_rate;
5609 int i;
5610
5611 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5612 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5613 ioa_cfg->bus_attr[i].bus_width);
5614
5615 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5616 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5617 }
5618 }
5619
5620 /**
5621 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5622 * @ioa_cfg: ioa config struct
5623 * @mode_pages: mode page 28 buffer
5624 *
5625 * Updates mode page 28 based on driver configuration
5626 *
5627 * Return value:
5628 * none
5629 **/
5630 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5631 struct ipr_mode_pages *mode_pages)
5632 {
5633 int i, entry_length;
5634 struct ipr_dev_bus_entry *bus;
5635 struct ipr_bus_attributes *bus_attr;
5636 struct ipr_mode_page28 *mode_page;
5637
5638 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5639 sizeof(struct ipr_mode_page28));
5640
5641 entry_length = mode_page->entry_length;
5642
5643 /* Loop for each device bus entry */
5644 for (i = 0, bus = mode_page->bus;
5645 i < mode_page->num_entries;
5646 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5647 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5648 dev_err(&ioa_cfg->pdev->dev,
5649 "Invalid resource address reported: 0x%08X\n",
5650 IPR_GET_PHYS_LOC(bus->res_addr));
5651 continue;
5652 }
5653
5654 bus_attr = &ioa_cfg->bus_attr[i];
5655 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5656 bus->bus_width = bus_attr->bus_width;
5657 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5658 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5659 if (bus_attr->qas_enabled)
5660 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5661 else
5662 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5663 }
5664 }
5665
5666 /**
5667 * ipr_build_mode_select - Build a mode select command
5668 * @ipr_cmd: ipr command struct
5669 * @res_handle: resource handle to send command to
5670 * @parm: Byte 2 of Mode Sense command
5671 * @dma_addr: DMA buffer address
5672 * @xfer_len: data transfer length
5673 *
5674 * Return value:
5675 * none
5676 **/
5677 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5678 __be32 res_handle, u8 parm, u32 dma_addr,
5679 u8 xfer_len)
5680 {
5681 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5682 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5683
5684 ioarcb->res_handle = res_handle;
5685 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5686 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5687 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5688 ioarcb->cmd_pkt.cdb[1] = parm;
5689 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5690
5691 ioadl->flags_and_data_len =
5692 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5693 ioadl->address = cpu_to_be32(dma_addr);
5694 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5695 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5696 }
5697
5698 /**
5699 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5700 * @ipr_cmd: ipr command struct
5701 *
5702 * This function sets up the SCSI bus attributes and sends
5703 * a Mode Select for Page 28 to activate them.
5704 *
5705 * Return value:
5706 * IPR_RC_JOB_RETURN
5707 **/
5708 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5709 {
5710 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5711 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5712 int length;
5713
5714 ENTER;
5715 ipr_scsi_bus_speed_limit(ioa_cfg);
5716 ipr_check_term_power(ioa_cfg, mode_pages);
5717 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5718 length = mode_pages->hdr.length + 1;
5719 mode_pages->hdr.length = 0;
5720
5721 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5722 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5723 length);
5724
5725 ipr_cmd->job_step = ipr_setup_write_cache;
5726 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5727
5728 LEAVE;
5729 return IPR_RC_JOB_RETURN;
5730 }
5731
5732 /**
5733 * ipr_build_mode_sense - Builds a mode sense command
5734 * @ipr_cmd: ipr command struct
5735 * @res: resource entry struct
5736 * @parm: Byte 2 of mode sense command
5737 * @dma_addr: DMA address of mode sense buffer
5738 * @xfer_len: Size of DMA buffer
5739 *
5740 * Return value:
5741 * none
5742 **/
5743 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5744 __be32 res_handle,
5745 u8 parm, u32 dma_addr, u8 xfer_len)
5746 {
5747 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5748 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5749
5750 ioarcb->res_handle = res_handle;
5751 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5752 ioarcb->cmd_pkt.cdb[2] = parm;
5753 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5754 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5755
5756 ioadl->flags_and_data_len =
5757 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5758 ioadl->address = cpu_to_be32(dma_addr);
5759 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5760 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5761 }
5762
5763 /**
5764 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5765 * @ipr_cmd: ipr command struct
5766 *
5767 * This function handles the failure of an IOA bringup command.
5768 *
5769 * Return value:
5770 * IPR_RC_JOB_RETURN
5771 **/
5772 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5773 {
5774 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5775 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5776
5777 dev_err(&ioa_cfg->pdev->dev,
5778 "0x%02X failed with IOASC: 0x%08X\n",
5779 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5780
5781 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5782 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5783 return IPR_RC_JOB_RETURN;
5784 }
5785
5786 /**
5787 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5788 * @ipr_cmd: ipr command struct
5789 *
5790 * This function handles the failure of a Mode Sense to the IOAFP.
5791 * Some adapters do not handle all mode pages.
5792 *
5793 * Return value:
5794 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5795 **/
5796 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5797 {
5798 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5799
5800 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5801 ipr_cmd->job_step = ipr_setup_write_cache;
5802 return IPR_RC_JOB_CONTINUE;
5803 }
5804
5805 return ipr_reset_cmd_failed(ipr_cmd);
5806 }
5807
5808 /**
5809 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5810 * @ipr_cmd: ipr command struct
5811 *
5812 * This function send a Page 28 mode sense to the IOA to
5813 * retrieve SCSI bus attributes.
5814 *
5815 * Return value:
5816 * IPR_RC_JOB_RETURN
5817 **/
5818 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5819 {
5820 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5821
5822 ENTER;
5823 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5824 0x28, ioa_cfg->vpd_cbs_dma +
5825 offsetof(struct ipr_misc_cbs, mode_pages),
5826 sizeof(struct ipr_mode_pages));
5827
5828 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5829 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5830
5831 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5832
5833 LEAVE;
5834 return IPR_RC_JOB_RETURN;
5835 }
5836
5837 /**
5838 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5839 * @ipr_cmd: ipr command struct
5840 *
5841 * This function enables dual IOA RAID support if possible.
5842 *
5843 * Return value:
5844 * IPR_RC_JOB_RETURN
5845 **/
5846 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5847 {
5848 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5849 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5850 struct ipr_mode_page24 *mode_page;
5851 int length;
5852
5853 ENTER;
5854 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5855 sizeof(struct ipr_mode_page24));
5856
5857 if (mode_page)
5858 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5859
5860 length = mode_pages->hdr.length + 1;
5861 mode_pages->hdr.length = 0;
5862
5863 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5864 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5865 length);
5866
5867 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5868 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5869
5870 LEAVE;
5871 return IPR_RC_JOB_RETURN;
5872 }
5873
5874 /**
5875 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5876 * @ipr_cmd: ipr command struct
5877 *
5878 * This function handles the failure of a Mode Sense to the IOAFP.
5879 * Some adapters do not handle all mode pages.
5880 *
5881 * Return value:
5882 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5883 **/
5884 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5885 {
5886 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5887
5888 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5889 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5890 return IPR_RC_JOB_CONTINUE;
5891 }
5892
5893 return ipr_reset_cmd_failed(ipr_cmd);
5894 }
5895
5896 /**
5897 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5898 * @ipr_cmd: ipr command struct
5899 *
5900 * This function send a mode sense to the IOA to retrieve
5901 * the IOA Advanced Function Control mode page.
5902 *
5903 * Return value:
5904 * IPR_RC_JOB_RETURN
5905 **/
5906 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5907 {
5908 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5909
5910 ENTER;
5911 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5912 0x24, ioa_cfg->vpd_cbs_dma +
5913 offsetof(struct ipr_misc_cbs, mode_pages),
5914 sizeof(struct ipr_mode_pages));
5915
5916 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5917 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5918
5919 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5920
5921 LEAVE;
5922 return IPR_RC_JOB_RETURN;
5923 }
5924
5925 /**
5926 * ipr_init_res_table - Initialize the resource table
5927 * @ipr_cmd: ipr command struct
5928 *
5929 * This function looks through the existing resource table, comparing
5930 * it with the config table. This function will take care of old/new
5931 * devices and schedule adding/removing them from the mid-layer
5932 * as appropriate.
5933 *
5934 * Return value:
5935 * IPR_RC_JOB_CONTINUE
5936 **/
5937 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5938 {
5939 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5940 struct ipr_resource_entry *res, *temp;
5941 struct ipr_config_table_entry *cfgte;
5942 int found, i;
5943 LIST_HEAD(old_res);
5944
5945 ENTER;
5946 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5947 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5948
5949 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5950 list_move_tail(&res->queue, &old_res);
5951
5952 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5953 cfgte = &ioa_cfg->cfg_table->dev[i];
5954 found = 0;
5955
5956 list_for_each_entry_safe(res, temp, &old_res, queue) {
5957 if (!memcmp(&res->cfgte.res_addr,
5958 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5959 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5960 found = 1;
5961 break;
5962 }
5963 }
5964
5965 if (!found) {
5966 if (list_empty(&ioa_cfg->free_res_q)) {
5967 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5968 break;
5969 }
5970
5971 found = 1;
5972 res = list_entry(ioa_cfg->free_res_q.next,
5973 struct ipr_resource_entry, queue);
5974 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5975 ipr_init_res_entry(res);
5976 res->add_to_ml = 1;
5977 }
5978
5979 if (found)
5980 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5981 }
5982
5983 list_for_each_entry_safe(res, temp, &old_res, queue) {
5984 if (res->sdev) {
5985 res->del_from_ml = 1;
5986 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5987 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5988 } else {
5989 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5990 }
5991 }
5992
5993 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
5994 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
5995 else
5996 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5997
5998 LEAVE;
5999 return IPR_RC_JOB_CONTINUE;
6000 }
6001
6002 /**
6003 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6004 * @ipr_cmd: ipr command struct
6005 *
6006 * This function sends a Query IOA Configuration command
6007 * to the adapter to retrieve the IOA configuration table.
6008 *
6009 * Return value:
6010 * IPR_RC_JOB_RETURN
6011 **/
6012 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6013 {
6014 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6015 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6016 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6017 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6018 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6019
6020 ENTER;
6021 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6022 ioa_cfg->dual_raid = 1;
6023 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6024 ucode_vpd->major_release, ucode_vpd->card_type,
6025 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6026 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6027 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6028
6029 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6030 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6031 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6032
6033 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6034 ioarcb->read_data_transfer_length =
6035 cpu_to_be32(sizeof(struct ipr_config_table));
6036
6037 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6038 ioadl->flags_and_data_len =
6039 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6040
6041 ipr_cmd->job_step = ipr_init_res_table;
6042
6043 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6044
6045 LEAVE;
6046 return IPR_RC_JOB_RETURN;
6047 }
6048
6049 /**
6050 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6051 * @ipr_cmd: ipr command struct
6052 *
6053 * This utility function sends an inquiry to the adapter.
6054 *
6055 * Return value:
6056 * none
6057 **/
6058 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6059 u32 dma_addr, u8 xfer_len)
6060 {
6061 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6062 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6063
6064 ENTER;
6065 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6066 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6067
6068 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6069 ioarcb->cmd_pkt.cdb[1] = flags;
6070 ioarcb->cmd_pkt.cdb[2] = page;
6071 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6072
6073 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6074 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6075
6076 ioadl->address = cpu_to_be32(dma_addr);
6077 ioadl->flags_and_data_len =
6078 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6079
6080 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6081 LEAVE;
6082 }
6083
6084 /**
6085 * ipr_inquiry_page_supported - Is the given inquiry page supported
6086 * @page0: inquiry page 0 buffer
6087 * @page: page code.
6088 *
6089 * This function determines if the specified inquiry page is supported.
6090 *
6091 * Return value:
6092 * 1 if page is supported / 0 if not
6093 **/
6094 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6095 {
6096 int i;
6097
6098 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6099 if (page0->page[i] == page)
6100 return 1;
6101
6102 return 0;
6103 }
6104
6105 /**
6106 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6107 * @ipr_cmd: ipr command struct
6108 *
6109 * This function sends a Page 0xD0 inquiry to the adapter
6110 * to retrieve adapter capabilities.
6111 *
6112 * Return value:
6113 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6114 **/
6115 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6116 {
6117 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6118 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6119 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6120
6121 ENTER;
6122 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6123 memset(cap, 0, sizeof(*cap));
6124
6125 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6126 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6127 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6128 sizeof(struct ipr_inquiry_cap));
6129 return IPR_RC_JOB_RETURN;
6130 }
6131
6132 LEAVE;
6133 return IPR_RC_JOB_CONTINUE;
6134 }
6135
6136 /**
6137 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6138 * @ipr_cmd: ipr command struct
6139 *
6140 * This function sends a Page 3 inquiry to the adapter
6141 * to retrieve software VPD information.
6142 *
6143 * Return value:
6144 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6145 **/
6146 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
6147 {
6148 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6149 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6150
6151 ENTER;
6152
6153 if (!ipr_inquiry_page_supported(page0, 1))
6154 ioa_cfg->cache_state = CACHE_NONE;
6155
6156 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
6157
6158 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6159 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6160 sizeof(struct ipr_inquiry_page3));
6161
6162 LEAVE;
6163 return IPR_RC_JOB_RETURN;
6164 }
6165
6166 /**
6167 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6168 * @ipr_cmd: ipr command struct
6169 *
6170 * This function sends a Page 0 inquiry to the adapter
6171 * to retrieve supported inquiry pages.
6172 *
6173 * Return value:
6174 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6175 **/
6176 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6177 {
6178 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6179 char type[5];
6180
6181 ENTER;
6182
6183 /* Grab the type out of the VPD and store it away */
6184 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6185 type[4] = '\0';
6186 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6187
6188 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6189
6190 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6191 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6192 sizeof(struct ipr_inquiry_page0));
6193
6194 LEAVE;
6195 return IPR_RC_JOB_RETURN;
6196 }
6197
6198 /**
6199 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6200 * @ipr_cmd: ipr command struct
6201 *
6202 * This function sends a standard inquiry to the adapter.
6203 *
6204 * Return value:
6205 * IPR_RC_JOB_RETURN
6206 **/
6207 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6208 {
6209 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6210
6211 ENTER;
6212 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6213
6214 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6215 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6216 sizeof(struct ipr_ioa_vpd));
6217
6218 LEAVE;
6219 return IPR_RC_JOB_RETURN;
6220 }
6221
6222 /**
6223 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6224 * @ipr_cmd: ipr command struct
6225 *
6226 * This function send an Identify Host Request Response Queue
6227 * command to establish the HRRQ with the adapter.
6228 *
6229 * Return value:
6230 * IPR_RC_JOB_RETURN
6231 **/
6232 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6233 {
6234 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6235 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6236
6237 ENTER;
6238 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6239
6240 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6241 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6242
6243 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6244 ioarcb->cmd_pkt.cdb[2] =
6245 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6246 ioarcb->cmd_pkt.cdb[3] =
6247 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6248 ioarcb->cmd_pkt.cdb[4] =
6249 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6250 ioarcb->cmd_pkt.cdb[5] =
6251 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6252 ioarcb->cmd_pkt.cdb[7] =
6253 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6254 ioarcb->cmd_pkt.cdb[8] =
6255 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6256
6257 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6258
6259 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6260
6261 LEAVE;
6262 return IPR_RC_JOB_RETURN;
6263 }
6264
6265 /**
6266 * ipr_reset_timer_done - Adapter reset timer function
6267 * @ipr_cmd: ipr command struct
6268 *
6269 * Description: This function is used in adapter reset processing
6270 * for timing events. If the reset_cmd pointer in the IOA
6271 * config struct is not this adapter's we are doing nested
6272 * resets and fail_all_ops will take care of freeing the
6273 * command block.
6274 *
6275 * Return value:
6276 * none
6277 **/
6278 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6279 {
6280 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6281 unsigned long lock_flags = 0;
6282
6283 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6284
6285 if (ioa_cfg->reset_cmd == ipr_cmd) {
6286 list_del(&ipr_cmd->queue);
6287 ipr_cmd->done(ipr_cmd);
6288 }
6289
6290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6291 }
6292
6293 /**
6294 * ipr_reset_start_timer - Start a timer for adapter reset job
6295 * @ipr_cmd: ipr command struct
6296 * @timeout: timeout value
6297 *
6298 * Description: This function is used in adapter reset processing
6299 * for timing events. If the reset_cmd pointer in the IOA
6300 * config struct is not this adapter's we are doing nested
6301 * resets and fail_all_ops will take care of freeing the
6302 * command block.
6303 *
6304 * Return value:
6305 * none
6306 **/
6307 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6308 unsigned long timeout)
6309 {
6310 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6311 ipr_cmd->done = ipr_reset_ioa_job;
6312
6313 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6314 ipr_cmd->timer.expires = jiffies + timeout;
6315 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6316 add_timer(&ipr_cmd->timer);
6317 }
6318
6319 /**
6320 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6321 * @ioa_cfg: ioa cfg struct
6322 *
6323 * Return value:
6324 * nothing
6325 **/
6326 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6327 {
6328 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6329
6330 /* Initialize Host RRQ pointers */
6331 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6332 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6333 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6334 ioa_cfg->toggle_bit = 1;
6335
6336 /* Zero out config table */
6337 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6338 }
6339
6340 /**
6341 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6342 * @ipr_cmd: ipr command struct
6343 *
6344 * This function reinitializes some control blocks and
6345 * enables destructive diagnostics on the adapter.
6346 *
6347 * Return value:
6348 * IPR_RC_JOB_RETURN
6349 **/
6350 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6351 {
6352 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6353 volatile u32 int_reg;
6354
6355 ENTER;
6356 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6357 ipr_init_ioa_mem(ioa_cfg);
6358
6359 ioa_cfg->allow_interrupts = 1;
6360 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6361
6362 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6363 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6364 ioa_cfg->regs.clr_interrupt_mask_reg);
6365 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6366 return IPR_RC_JOB_CONTINUE;
6367 }
6368
6369 /* Enable destructive diagnostics on IOA */
6370 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6371
6372 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6373 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6374
6375 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6376
6377 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6378 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6379 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6380 ipr_cmd->done = ipr_reset_ioa_job;
6381 add_timer(&ipr_cmd->timer);
6382 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6383
6384 LEAVE;
6385 return IPR_RC_JOB_RETURN;
6386 }
6387
6388 /**
6389 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6390 * @ipr_cmd: ipr command struct
6391 *
6392 * This function is invoked when an adapter dump has run out
6393 * of processing time.
6394 *
6395 * Return value:
6396 * IPR_RC_JOB_CONTINUE
6397 **/
6398 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6399 {
6400 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6401
6402 if (ioa_cfg->sdt_state == GET_DUMP)
6403 ioa_cfg->sdt_state = ABORT_DUMP;
6404
6405 ipr_cmd->job_step = ipr_reset_alert;
6406
6407 return IPR_RC_JOB_CONTINUE;
6408 }
6409
6410 /**
6411 * ipr_unit_check_no_data - Log a unit check/no data error log
6412 * @ioa_cfg: ioa config struct
6413 *
6414 * Logs an error indicating the adapter unit checked, but for some
6415 * reason, we were unable to fetch the unit check buffer.
6416 *
6417 * Return value:
6418 * nothing
6419 **/
6420 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6421 {
6422 ioa_cfg->errors_logged++;
6423 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6424 }
6425
6426 /**
6427 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6428 * @ioa_cfg: ioa config struct
6429 *
6430 * Fetches the unit check buffer from the adapter by clocking the data
6431 * through the mailbox register.
6432 *
6433 * Return value:
6434 * nothing
6435 **/
6436 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6437 {
6438 unsigned long mailbox;
6439 struct ipr_hostrcb *hostrcb;
6440 struct ipr_uc_sdt sdt;
6441 int rc, length;
6442 u32 ioasc;
6443
6444 mailbox = readl(ioa_cfg->ioa_mailbox);
6445
6446 if (!ipr_sdt_is_fmt2(mailbox)) {
6447 ipr_unit_check_no_data(ioa_cfg);
6448 return;
6449 }
6450
6451 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6452 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6453 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6454
6455 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6456 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6457 ipr_unit_check_no_data(ioa_cfg);
6458 return;
6459 }
6460
6461 /* Find length of the first sdt entry (UC buffer) */
6462 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6463 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6464
6465 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6466 struct ipr_hostrcb, queue);
6467 list_del(&hostrcb->queue);
6468 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6469
6470 rc = ipr_get_ldump_data_section(ioa_cfg,
6471 be32_to_cpu(sdt.entry[0].bar_str_offset),
6472 (__be32 *)&hostrcb->hcam,
6473 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6474
6475 if (!rc) {
6476 ipr_handle_log_data(ioa_cfg, hostrcb);
6477 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6478 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6479 ioa_cfg->sdt_state == GET_DUMP)
6480 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6481 } else
6482 ipr_unit_check_no_data(ioa_cfg);
6483
6484 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6485 }
6486
6487 /**
6488 * ipr_reset_restore_cfg_space - Restore PCI config space.
6489 * @ipr_cmd: ipr command struct
6490 *
6491 * Description: This function restores the saved PCI config space of
6492 * the adapter, fails all outstanding ops back to the callers, and
6493 * fetches the dump/unit check if applicable to this reset.
6494 *
6495 * Return value:
6496 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6497 **/
6498 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6499 {
6500 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6501 int rc;
6502
6503 ENTER;
6504 rc = pci_restore_state(ioa_cfg->pdev);
6505
6506 if (rc != PCIBIOS_SUCCESSFUL) {
6507 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6508 return IPR_RC_JOB_CONTINUE;
6509 }
6510
6511 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6512 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6513 return IPR_RC_JOB_CONTINUE;
6514 }
6515
6516 ipr_fail_all_ops(ioa_cfg);
6517
6518 if (ioa_cfg->ioa_unit_checked) {
6519 ioa_cfg->ioa_unit_checked = 0;
6520 ipr_get_unit_check_buffer(ioa_cfg);
6521 ipr_cmd->job_step = ipr_reset_alert;
6522 ipr_reset_start_timer(ipr_cmd, 0);
6523 return IPR_RC_JOB_RETURN;
6524 }
6525
6526 if (ioa_cfg->in_ioa_bringdown) {
6527 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6528 } else {
6529 ipr_cmd->job_step = ipr_reset_enable_ioa;
6530
6531 if (GET_DUMP == ioa_cfg->sdt_state) {
6532 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6533 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6534 schedule_work(&ioa_cfg->work_q);
6535 return IPR_RC_JOB_RETURN;
6536 }
6537 }
6538
6539 ENTER;
6540 return IPR_RC_JOB_CONTINUE;
6541 }
6542
6543 /**
6544 * ipr_reset_bist_done - BIST has completed on the adapter.
6545 * @ipr_cmd: ipr command struct
6546 *
6547 * Description: Unblock config space and resume the reset process.
6548 *
6549 * Return value:
6550 * IPR_RC_JOB_CONTINUE
6551 **/
6552 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6553 {
6554 ENTER;
6555 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6556 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6557 LEAVE;
6558 return IPR_RC_JOB_CONTINUE;
6559 }
6560
6561 /**
6562 * ipr_reset_start_bist - Run BIST on the adapter.
6563 * @ipr_cmd: ipr command struct
6564 *
6565 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6566 *
6567 * Return value:
6568 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6569 **/
6570 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6571 {
6572 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6573 int rc;
6574
6575 ENTER;
6576 pci_block_user_cfg_access(ioa_cfg->pdev);
6577 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6578
6579 if (rc != PCIBIOS_SUCCESSFUL) {
6580 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6581 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6582 rc = IPR_RC_JOB_CONTINUE;
6583 } else {
6584 ipr_cmd->job_step = ipr_reset_bist_done;
6585 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6586 rc = IPR_RC_JOB_RETURN;
6587 }
6588
6589 LEAVE;
6590 return rc;
6591 }
6592
6593 /**
6594 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6595 * @ipr_cmd: ipr command struct
6596 *
6597 * Description: This clears PCI reset to the adapter and delays two seconds.
6598 *
6599 * Return value:
6600 * IPR_RC_JOB_RETURN
6601 **/
6602 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6603 {
6604 ENTER;
6605 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6606 ipr_cmd->job_step = ipr_reset_bist_done;
6607 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6608 LEAVE;
6609 return IPR_RC_JOB_RETURN;
6610 }
6611
6612 /**
6613 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6614 * @ipr_cmd: ipr command struct
6615 *
6616 * Description: This asserts PCI reset to the adapter.
6617 *
6618 * Return value:
6619 * IPR_RC_JOB_RETURN
6620 **/
6621 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6622 {
6623 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6624 struct pci_dev *pdev = ioa_cfg->pdev;
6625
6626 ENTER;
6627 pci_block_user_cfg_access(pdev);
6628 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6629 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6630 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6631 LEAVE;
6632 return IPR_RC_JOB_RETURN;
6633 }
6634
6635 /**
6636 * ipr_reset_allowed - Query whether or not IOA can be reset
6637 * @ioa_cfg: ioa config struct
6638 *
6639 * Return value:
6640 * 0 if reset not allowed / non-zero if reset is allowed
6641 **/
6642 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6643 {
6644 volatile u32 temp_reg;
6645
6646 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6647 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6648 }
6649
6650 /**
6651 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6652 * @ipr_cmd: ipr command struct
6653 *
6654 * Description: This function waits for adapter permission to run BIST,
6655 * then runs BIST. If the adapter does not give permission after a
6656 * reasonable time, we will reset the adapter anyway. The impact of
6657 * resetting the adapter without warning the adapter is the risk of
6658 * losing the persistent error log on the adapter. If the adapter is
6659 * reset while it is writing to the flash on the adapter, the flash
6660 * segment will have bad ECC and be zeroed.
6661 *
6662 * Return value:
6663 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6664 **/
6665 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6666 {
6667 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6668 int rc = IPR_RC_JOB_RETURN;
6669
6670 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6671 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6672 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6673 } else {
6674 ipr_cmd->job_step = ioa_cfg->reset;
6675 rc = IPR_RC_JOB_CONTINUE;
6676 }
6677
6678 return rc;
6679 }
6680
6681 /**
6682 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6683 * @ipr_cmd: ipr command struct
6684 *
6685 * Description: This function alerts the adapter that it will be reset.
6686 * If memory space is not currently enabled, proceed directly
6687 * to running BIST on the adapter. The timer must always be started
6688 * so we guarantee we do not run BIST from ipr_isr.
6689 *
6690 * Return value:
6691 * IPR_RC_JOB_RETURN
6692 **/
6693 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6694 {
6695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6696 u16 cmd_reg;
6697 int rc;
6698
6699 ENTER;
6700 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6701
6702 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6703 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6704 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6705 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6706 } else {
6707 ipr_cmd->job_step = ioa_cfg->reset;
6708 }
6709
6710 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6711 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6712
6713 LEAVE;
6714 return IPR_RC_JOB_RETURN;
6715 }
6716
6717 /**
6718 * ipr_reset_ucode_download_done - Microcode download completion
6719 * @ipr_cmd: ipr command struct
6720 *
6721 * Description: This function unmaps the microcode download buffer.
6722 *
6723 * Return value:
6724 * IPR_RC_JOB_CONTINUE
6725 **/
6726 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6727 {
6728 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6729 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6730
6731 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6732 sglist->num_sg, DMA_TO_DEVICE);
6733
6734 ipr_cmd->job_step = ipr_reset_alert;
6735 return IPR_RC_JOB_CONTINUE;
6736 }
6737
6738 /**
6739 * ipr_reset_ucode_download - Download microcode to the adapter
6740 * @ipr_cmd: ipr command struct
6741 *
6742 * Description: This function checks to see if it there is microcode
6743 * to download to the adapter. If there is, a download is performed.
6744 *
6745 * Return value:
6746 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6747 **/
6748 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6749 {
6750 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6751 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6752
6753 ENTER;
6754 ipr_cmd->job_step = ipr_reset_alert;
6755
6756 if (!sglist)
6757 return IPR_RC_JOB_CONTINUE;
6758
6759 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6760 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6761 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6762 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6763 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6764 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6765 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6766
6767 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6768 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6769
6770 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6771 IPR_WRITE_BUFFER_TIMEOUT);
6772
6773 LEAVE;
6774 return IPR_RC_JOB_RETURN;
6775 }
6776
6777 /**
6778 * ipr_reset_shutdown_ioa - Shutdown the adapter
6779 * @ipr_cmd: ipr command struct
6780 *
6781 * Description: This function issues an adapter shutdown of the
6782 * specified type to the specified adapter as part of the
6783 * adapter reset job.
6784 *
6785 * Return value:
6786 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6787 **/
6788 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6789 {
6790 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6791 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6792 unsigned long timeout;
6793 int rc = IPR_RC_JOB_CONTINUE;
6794
6795 ENTER;
6796 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6797 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6798 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6799 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6800 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6801
6802 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6803 timeout = IPR_SHUTDOWN_TIMEOUT;
6804 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6805 timeout = IPR_INTERNAL_TIMEOUT;
6806 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6807 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
6808 else
6809 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6810
6811 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6812
6813 rc = IPR_RC_JOB_RETURN;
6814 ipr_cmd->job_step = ipr_reset_ucode_download;
6815 } else
6816 ipr_cmd->job_step = ipr_reset_alert;
6817
6818 LEAVE;
6819 return rc;
6820 }
6821
6822 /**
6823 * ipr_reset_ioa_job - Adapter reset job
6824 * @ipr_cmd: ipr command struct
6825 *
6826 * Description: This function is the job router for the adapter reset job.
6827 *
6828 * Return value:
6829 * none
6830 **/
6831 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6832 {
6833 u32 rc, ioasc;
6834 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6835
6836 do {
6837 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6838
6839 if (ioa_cfg->reset_cmd != ipr_cmd) {
6840 /*
6841 * We are doing nested adapter resets and this is
6842 * not the current reset job.
6843 */
6844 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6845 return;
6846 }
6847
6848 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6849 rc = ipr_cmd->job_step_failed(ipr_cmd);
6850 if (rc == IPR_RC_JOB_RETURN)
6851 return;
6852 }
6853
6854 ipr_reinit_ipr_cmnd(ipr_cmd);
6855 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6856 rc = ipr_cmd->job_step(ipr_cmd);
6857 } while(rc == IPR_RC_JOB_CONTINUE);
6858 }
6859
6860 /**
6861 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6862 * @ioa_cfg: ioa config struct
6863 * @job_step: first job step of reset job
6864 * @shutdown_type: shutdown type
6865 *
6866 * Description: This function will initiate the reset of the given adapter
6867 * starting at the selected job step.
6868 * If the caller needs to wait on the completion of the reset,
6869 * the caller must sleep on the reset_wait_q.
6870 *
6871 * Return value:
6872 * none
6873 **/
6874 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6875 int (*job_step) (struct ipr_cmnd *),
6876 enum ipr_shutdown_type shutdown_type)
6877 {
6878 struct ipr_cmnd *ipr_cmd;
6879
6880 ioa_cfg->in_reset_reload = 1;
6881 ioa_cfg->allow_cmds = 0;
6882 scsi_block_requests(ioa_cfg->host);
6883
6884 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6885 ioa_cfg->reset_cmd = ipr_cmd;
6886 ipr_cmd->job_step = job_step;
6887 ipr_cmd->u.shutdown_type = shutdown_type;
6888
6889 ipr_reset_ioa_job(ipr_cmd);
6890 }
6891
6892 /**
6893 * ipr_initiate_ioa_reset - Initiate an adapter reset
6894 * @ioa_cfg: ioa config struct
6895 * @shutdown_type: shutdown type
6896 *
6897 * Description: This function will initiate the reset of the given adapter.
6898 * If the caller needs to wait on the completion of the reset,
6899 * the caller must sleep on the reset_wait_q.
6900 *
6901 * Return value:
6902 * none
6903 **/
6904 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6905 enum ipr_shutdown_type shutdown_type)
6906 {
6907 if (ioa_cfg->ioa_is_dead)
6908 return;
6909
6910 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6911 ioa_cfg->sdt_state = ABORT_DUMP;
6912
6913 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6914 dev_err(&ioa_cfg->pdev->dev,
6915 "IOA taken offline - error recovery failed\n");
6916
6917 ioa_cfg->reset_retries = 0;
6918 ioa_cfg->ioa_is_dead = 1;
6919
6920 if (ioa_cfg->in_ioa_bringdown) {
6921 ioa_cfg->reset_cmd = NULL;
6922 ioa_cfg->in_reset_reload = 0;
6923 ipr_fail_all_ops(ioa_cfg);
6924 wake_up_all(&ioa_cfg->reset_wait_q);
6925
6926 spin_unlock_irq(ioa_cfg->host->host_lock);
6927 scsi_unblock_requests(ioa_cfg->host);
6928 spin_lock_irq(ioa_cfg->host->host_lock);
6929 return;
6930 } else {
6931 ioa_cfg->in_ioa_bringdown = 1;
6932 shutdown_type = IPR_SHUTDOWN_NONE;
6933 }
6934 }
6935
6936 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6937 shutdown_type);
6938 }
6939
6940 /**
6941 * ipr_reset_freeze - Hold off all I/O activity
6942 * @ipr_cmd: ipr command struct
6943 *
6944 * Description: If the PCI slot is frozen, hold off all I/O
6945 * activity; then, as soon as the slot is available again,
6946 * initiate an adapter reset.
6947 */
6948 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6949 {
6950 /* Disallow new interrupts, avoid loop */
6951 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6952 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6953 ipr_cmd->done = ipr_reset_ioa_job;
6954 return IPR_RC_JOB_RETURN;
6955 }
6956
6957 /**
6958 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6959 * @pdev: PCI device struct
6960 *
6961 * Description: This routine is called to tell us that the PCI bus
6962 * is down. Can't do anything here, except put the device driver
6963 * into a holding pattern, waiting for the PCI bus to come back.
6964 */
6965 static void ipr_pci_frozen(struct pci_dev *pdev)
6966 {
6967 unsigned long flags = 0;
6968 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6969
6970 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6971 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6972 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6973 }
6974
6975 /**
6976 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6977 * @pdev: PCI device struct
6978 *
6979 * Description: This routine is called by the pci error recovery
6980 * code after the PCI slot has been reset, just before we
6981 * should resume normal operations.
6982 */
6983 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6984 {
6985 unsigned long flags = 0;
6986 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6987
6988 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6989 if (ioa_cfg->needs_warm_reset)
6990 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6991 else
6992 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6993 IPR_SHUTDOWN_NONE);
6994 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6995 return PCI_ERS_RESULT_RECOVERED;
6996 }
6997
6998 /**
6999 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7000 * @pdev: PCI device struct
7001 *
7002 * Description: This routine is called when the PCI bus has
7003 * permanently failed.
7004 */
7005 static void ipr_pci_perm_failure(struct pci_dev *pdev)
7006 {
7007 unsigned long flags = 0;
7008 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7009
7010 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7011 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7012 ioa_cfg->sdt_state = ABORT_DUMP;
7013 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7014 ioa_cfg->in_ioa_bringdown = 1;
7015 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7016 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7017 }
7018
7019 /**
7020 * ipr_pci_error_detected - Called when a PCI error is detected.
7021 * @pdev: PCI device struct
7022 * @state: PCI channel state
7023 *
7024 * Description: Called when a PCI error is detected.
7025 *
7026 * Return value:
7027 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7028 */
7029 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7030 pci_channel_state_t state)
7031 {
7032 switch (state) {
7033 case pci_channel_io_frozen:
7034 ipr_pci_frozen(pdev);
7035 return PCI_ERS_RESULT_NEED_RESET;
7036 case pci_channel_io_perm_failure:
7037 ipr_pci_perm_failure(pdev);
7038 return PCI_ERS_RESULT_DISCONNECT;
7039 break;
7040 default:
7041 break;
7042 }
7043 return PCI_ERS_RESULT_NEED_RESET;
7044 }
7045
7046 /**
7047 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7048 * @ioa_cfg: ioa cfg struct
7049 *
7050 * Description: This is the second phase of adapter intialization
7051 * This function takes care of initilizing the adapter to the point
7052 * where it can accept new commands.
7053
7054 * Return value:
7055 * 0 on sucess / -EIO on failure
7056 **/
7057 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7058 {
7059 int rc = 0;
7060 unsigned long host_lock_flags = 0;
7061
7062 ENTER;
7063 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7064 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
7065 if (ioa_cfg->needs_hard_reset) {
7066 ioa_cfg->needs_hard_reset = 0;
7067 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7068 } else
7069 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7070 IPR_SHUTDOWN_NONE);
7071
7072 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7073 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7074 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7075
7076 if (ioa_cfg->ioa_is_dead) {
7077 rc = -EIO;
7078 } else if (ipr_invalid_adapter(ioa_cfg)) {
7079 if (!ipr_testmode)
7080 rc = -EIO;
7081
7082 dev_err(&ioa_cfg->pdev->dev,
7083 "Adapter not supported in this hardware configuration.\n");
7084 }
7085
7086 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7087
7088 LEAVE;
7089 return rc;
7090 }
7091
7092 /**
7093 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7094 * @ioa_cfg: ioa config struct
7095 *
7096 * Return value:
7097 * none
7098 **/
7099 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7100 {
7101 int i;
7102
7103 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7104 if (ioa_cfg->ipr_cmnd_list[i])
7105 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7106 ioa_cfg->ipr_cmnd_list[i],
7107 ioa_cfg->ipr_cmnd_list_dma[i]);
7108
7109 ioa_cfg->ipr_cmnd_list[i] = NULL;
7110 }
7111
7112 if (ioa_cfg->ipr_cmd_pool)
7113 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7114
7115 ioa_cfg->ipr_cmd_pool = NULL;
7116 }
7117
7118 /**
7119 * ipr_free_mem - Frees memory allocated for an adapter
7120 * @ioa_cfg: ioa cfg struct
7121 *
7122 * Return value:
7123 * nothing
7124 **/
7125 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7126 {
7127 int i;
7128
7129 kfree(ioa_cfg->res_entries);
7130 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7131 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7132 ipr_free_cmd_blks(ioa_cfg);
7133 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7134 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7135 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7136 ioa_cfg->cfg_table,
7137 ioa_cfg->cfg_table_dma);
7138
7139 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7140 pci_free_consistent(ioa_cfg->pdev,
7141 sizeof(struct ipr_hostrcb),
7142 ioa_cfg->hostrcb[i],
7143 ioa_cfg->hostrcb_dma[i]);
7144 }
7145
7146 ipr_free_dump(ioa_cfg);
7147 kfree(ioa_cfg->trace);
7148 }
7149
7150 /**
7151 * ipr_free_all_resources - Free all allocated resources for an adapter.
7152 * @ipr_cmd: ipr command struct
7153 *
7154 * This function frees all allocated resources for the
7155 * specified adapter.
7156 *
7157 * Return value:
7158 * none
7159 **/
7160 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7161 {
7162 struct pci_dev *pdev = ioa_cfg->pdev;
7163
7164 ENTER;
7165 free_irq(pdev->irq, ioa_cfg);
7166 iounmap(ioa_cfg->hdw_dma_regs);
7167 pci_release_regions(pdev);
7168 ipr_free_mem(ioa_cfg);
7169 scsi_host_put(ioa_cfg->host);
7170 pci_disable_device(pdev);
7171 LEAVE;
7172 }
7173
7174 /**
7175 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7176 * @ioa_cfg: ioa config struct
7177 *
7178 * Return value:
7179 * 0 on success / -ENOMEM on allocation failure
7180 **/
7181 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7182 {
7183 struct ipr_cmnd *ipr_cmd;
7184 struct ipr_ioarcb *ioarcb;
7185 dma_addr_t dma_addr;
7186 int i;
7187
7188 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7189 sizeof(struct ipr_cmnd), 8, 0);
7190
7191 if (!ioa_cfg->ipr_cmd_pool)
7192 return -ENOMEM;
7193
7194 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7195 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
7196
7197 if (!ipr_cmd) {
7198 ipr_free_cmd_blks(ioa_cfg);
7199 return -ENOMEM;
7200 }
7201
7202 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7203 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7204 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7205
7206 ioarcb = &ipr_cmd->ioarcb;
7207 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7208 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7209 ioarcb->write_ioadl_addr =
7210 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7211 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7212 ioarcb->ioasa_host_pci_addr =
7213 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7214 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7215 ipr_cmd->cmd_index = i;
7216 ipr_cmd->ioa_cfg = ioa_cfg;
7217 ipr_cmd->sense_buffer_dma = dma_addr +
7218 offsetof(struct ipr_cmnd, sense_buffer);
7219
7220 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7221 }
7222
7223 return 0;
7224 }
7225
7226 /**
7227 * ipr_alloc_mem - Allocate memory for an adapter
7228 * @ioa_cfg: ioa config struct
7229 *
7230 * Return value:
7231 * 0 on success / non-zero for error
7232 **/
7233 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7234 {
7235 struct pci_dev *pdev = ioa_cfg->pdev;
7236 int i, rc = -ENOMEM;
7237
7238 ENTER;
7239 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7240 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7241
7242 if (!ioa_cfg->res_entries)
7243 goto out;
7244
7245 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7246 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7247
7248 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7249 sizeof(struct ipr_misc_cbs),
7250 &ioa_cfg->vpd_cbs_dma);
7251
7252 if (!ioa_cfg->vpd_cbs)
7253 goto out_free_res_entries;
7254
7255 if (ipr_alloc_cmd_blks(ioa_cfg))
7256 goto out_free_vpd_cbs;
7257
7258 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7259 sizeof(u32) * IPR_NUM_CMD_BLKS,
7260 &ioa_cfg->host_rrq_dma);
7261
7262 if (!ioa_cfg->host_rrq)
7263 goto out_ipr_free_cmd_blocks;
7264
7265 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7266 sizeof(struct ipr_config_table),
7267 &ioa_cfg->cfg_table_dma);
7268
7269 if (!ioa_cfg->cfg_table)
7270 goto out_free_host_rrq;
7271
7272 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7273 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7274 sizeof(struct ipr_hostrcb),
7275 &ioa_cfg->hostrcb_dma[i]);
7276
7277 if (!ioa_cfg->hostrcb[i])
7278 goto out_free_hostrcb_dma;
7279
7280 ioa_cfg->hostrcb[i]->hostrcb_dma =
7281 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7282 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7283 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7284 }
7285
7286 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7287 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7288
7289 if (!ioa_cfg->trace)
7290 goto out_free_hostrcb_dma;
7291
7292 rc = 0;
7293 out:
7294 LEAVE;
7295 return rc;
7296
7297 out_free_hostrcb_dma:
7298 while (i-- > 0) {
7299 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7300 ioa_cfg->hostrcb[i],
7301 ioa_cfg->hostrcb_dma[i]);
7302 }
7303 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7304 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7305 out_free_host_rrq:
7306 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7307 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7308 out_ipr_free_cmd_blocks:
7309 ipr_free_cmd_blks(ioa_cfg);
7310 out_free_vpd_cbs:
7311 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7312 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7313 out_free_res_entries:
7314 kfree(ioa_cfg->res_entries);
7315 goto out;
7316 }
7317
7318 /**
7319 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7320 * @ioa_cfg: ioa config struct
7321 *
7322 * Return value:
7323 * none
7324 **/
7325 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7326 {
7327 int i;
7328
7329 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7330 ioa_cfg->bus_attr[i].bus = i;
7331 ioa_cfg->bus_attr[i].qas_enabled = 0;
7332 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7333 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7334 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7335 else
7336 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7337 }
7338 }
7339
7340 /**
7341 * ipr_init_ioa_cfg - Initialize IOA config struct
7342 * @ioa_cfg: ioa config struct
7343 * @host: scsi host struct
7344 * @pdev: PCI dev struct
7345 *
7346 * Return value:
7347 * none
7348 **/
7349 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7350 struct Scsi_Host *host, struct pci_dev *pdev)
7351 {
7352 const struct ipr_interrupt_offsets *p;
7353 struct ipr_interrupts *t;
7354 void __iomem *base;
7355
7356 ioa_cfg->host = host;
7357 ioa_cfg->pdev = pdev;
7358 ioa_cfg->log_level = ipr_log_level;
7359 ioa_cfg->doorbell = IPR_DOORBELL;
7360 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7361 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7362 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7363 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7364 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7365 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7366 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7367 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7368
7369 INIT_LIST_HEAD(&ioa_cfg->free_q);
7370 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7371 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7372 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7373 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7374 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7375 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7376 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7377 ioa_cfg->sdt_state = INACTIVE;
7378 if (ipr_enable_cache)
7379 ioa_cfg->cache_state = CACHE_ENABLED;
7380 else
7381 ioa_cfg->cache_state = CACHE_DISABLED;
7382
7383 ipr_initialize_bus_attr(ioa_cfg);
7384
7385 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7386 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7387 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7388 host->unique_id = host->host_no;
7389 host->max_cmd_len = IPR_MAX_CDB_LEN;
7390 pci_set_drvdata(pdev, ioa_cfg);
7391
7392 p = &ioa_cfg->chip_cfg->regs;
7393 t = &ioa_cfg->regs;
7394 base = ioa_cfg->hdw_dma_regs;
7395
7396 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7397 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7398 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7399 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7400 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7401 t->ioarrin_reg = base + p->ioarrin_reg;
7402 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7403 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7404 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7405 }
7406
7407 /**
7408 * ipr_get_chip_cfg - Find adapter chip configuration
7409 * @dev_id: PCI device id struct
7410 *
7411 * Return value:
7412 * ptr to chip config on success / NULL on failure
7413 **/
7414 static const struct ipr_chip_cfg_t * __devinit
7415 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7416 {
7417 int i;
7418
7419 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7420 if (ipr_chip[i].vendor == dev_id->vendor &&
7421 ipr_chip[i].device == dev_id->device)
7422 return ipr_chip[i].cfg;
7423 return NULL;
7424 }
7425
7426 /**
7427 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7428 * @pdev: PCI device struct
7429 * @dev_id: PCI device id struct
7430 *
7431 * Return value:
7432 * 0 on success / non-zero on failure
7433 **/
7434 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7435 const struct pci_device_id *dev_id)
7436 {
7437 struct ipr_ioa_cfg *ioa_cfg;
7438 struct Scsi_Host *host;
7439 unsigned long ipr_regs_pci;
7440 void __iomem *ipr_regs;
7441 int rc = PCIBIOS_SUCCESSFUL;
7442 volatile u32 mask, uproc, interrupts;
7443
7444 ENTER;
7445
7446 if ((rc = pci_enable_device(pdev))) {
7447 dev_err(&pdev->dev, "Cannot enable adapter\n");
7448 goto out;
7449 }
7450
7451 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7452
7453 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7454
7455 if (!host) {
7456 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7457 rc = -ENOMEM;
7458 goto out_disable;
7459 }
7460
7461 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7462 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7463 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7464 sata_port_info.flags, &ipr_sata_ops);
7465
7466 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7467
7468 if (!ioa_cfg->chip_cfg) {
7469 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7470 dev_id->vendor, dev_id->device);
7471 goto out_scsi_host_put;
7472 }
7473
7474 if (ipr_transop_timeout)
7475 ioa_cfg->transop_timeout = ipr_transop_timeout;
7476 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7477 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7478 else
7479 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7480
7481 ioa_cfg->revid = pdev->revision;
7482
7483 ipr_regs_pci = pci_resource_start(pdev, 0);
7484
7485 rc = pci_request_regions(pdev, IPR_NAME);
7486 if (rc < 0) {
7487 dev_err(&pdev->dev,
7488 "Couldn't register memory range of registers\n");
7489 goto out_scsi_host_put;
7490 }
7491
7492 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7493
7494 if (!ipr_regs) {
7495 dev_err(&pdev->dev,
7496 "Couldn't map memory range of registers\n");
7497 rc = -ENOMEM;
7498 goto out_release_regions;
7499 }
7500
7501 ioa_cfg->hdw_dma_regs = ipr_regs;
7502 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7503 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7504
7505 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7506
7507 pci_set_master(pdev);
7508
7509 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7510 if (rc < 0) {
7511 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7512 goto cleanup_nomem;
7513 }
7514
7515 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7516 ioa_cfg->chip_cfg->cache_line_size);
7517
7518 if (rc != PCIBIOS_SUCCESSFUL) {
7519 dev_err(&pdev->dev, "Write of cache line size failed\n");
7520 rc = -EIO;
7521 goto cleanup_nomem;
7522 }
7523
7524 /* Save away PCI config space for use following IOA reset */
7525 rc = pci_save_state(pdev);
7526
7527 if (rc != PCIBIOS_SUCCESSFUL) {
7528 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7529 rc = -EIO;
7530 goto cleanup_nomem;
7531 }
7532
7533 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7534 goto cleanup_nomem;
7535
7536 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7537 goto cleanup_nomem;
7538
7539 rc = ipr_alloc_mem(ioa_cfg);
7540 if (rc < 0) {
7541 dev_err(&pdev->dev,
7542 "Couldn't allocate enough memory for device driver!\n");
7543 goto cleanup_nomem;
7544 }
7545
7546 /*
7547 * If HRRQ updated interrupt is not masked, or reset alert is set,
7548 * the card is in an unknown state and needs a hard reset
7549 */
7550 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7551 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
7552 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7553 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7554 ioa_cfg->needs_hard_reset = 1;
7555 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7556 ioa_cfg->needs_hard_reset = 1;
7557 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7558 ioa_cfg->ioa_unit_checked = 1;
7559
7560 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7561 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7562
7563 if (rc) {
7564 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7565 pdev->irq, rc);
7566 goto cleanup_nolog;
7567 }
7568
7569 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7570 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7571 ioa_cfg->needs_warm_reset = 1;
7572 ioa_cfg->reset = ipr_reset_slot_reset;
7573 } else
7574 ioa_cfg->reset = ipr_reset_start_bist;
7575
7576 spin_lock(&ipr_driver_lock);
7577 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7578 spin_unlock(&ipr_driver_lock);
7579
7580 LEAVE;
7581 out:
7582 return rc;
7583
7584 cleanup_nolog:
7585 ipr_free_mem(ioa_cfg);
7586 cleanup_nomem:
7587 iounmap(ipr_regs);
7588 out_release_regions:
7589 pci_release_regions(pdev);
7590 out_scsi_host_put:
7591 scsi_host_put(host);
7592 out_disable:
7593 pci_disable_device(pdev);
7594 goto out;
7595 }
7596
7597 /**
7598 * ipr_scan_vsets - Scans for VSET devices
7599 * @ioa_cfg: ioa config struct
7600 *
7601 * Description: Since the VSET resources do not follow SAM in that we can have
7602 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7603 *
7604 * Return value:
7605 * none
7606 **/
7607 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7608 {
7609 int target, lun;
7610
7611 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7612 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7613 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7614 }
7615
7616 /**
7617 * ipr_initiate_ioa_bringdown - Bring down an adapter
7618 * @ioa_cfg: ioa config struct
7619 * @shutdown_type: shutdown type
7620 *
7621 * Description: This function will initiate bringing down the adapter.
7622 * This consists of issuing an IOA shutdown to the adapter
7623 * to flush the cache, and running BIST.
7624 * If the caller needs to wait on the completion of the reset,
7625 * the caller must sleep on the reset_wait_q.
7626 *
7627 * Return value:
7628 * none
7629 **/
7630 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7631 enum ipr_shutdown_type shutdown_type)
7632 {
7633 ENTER;
7634 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7635 ioa_cfg->sdt_state = ABORT_DUMP;
7636 ioa_cfg->reset_retries = 0;
7637 ioa_cfg->in_ioa_bringdown = 1;
7638 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7639 LEAVE;
7640 }
7641
7642 /**
7643 * __ipr_remove - Remove a single adapter
7644 * @pdev: pci device struct
7645 *
7646 * Adapter hot plug remove entry point.
7647 *
7648 * Return value:
7649 * none
7650 **/
7651 static void __ipr_remove(struct pci_dev *pdev)
7652 {
7653 unsigned long host_lock_flags = 0;
7654 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7655 ENTER;
7656
7657 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7658 while(ioa_cfg->in_reset_reload) {
7659 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7660 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7661 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7662 }
7663
7664 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7665
7666 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7667 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7668 flush_scheduled_work();
7669 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7670
7671 spin_lock(&ipr_driver_lock);
7672 list_del(&ioa_cfg->queue);
7673 spin_unlock(&ipr_driver_lock);
7674
7675 if (ioa_cfg->sdt_state == ABORT_DUMP)
7676 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7677 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7678
7679 ipr_free_all_resources(ioa_cfg);
7680
7681 LEAVE;
7682 }
7683
7684 /**
7685 * ipr_remove - IOA hot plug remove entry point
7686 * @pdev: pci device struct
7687 *
7688 * Adapter hot plug remove entry point.
7689 *
7690 * Return value:
7691 * none
7692 **/
7693 static void ipr_remove(struct pci_dev *pdev)
7694 {
7695 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7696
7697 ENTER;
7698
7699 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7700 &ipr_trace_attr);
7701 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7702 &ipr_dump_attr);
7703 scsi_remove_host(ioa_cfg->host);
7704
7705 __ipr_remove(pdev);
7706
7707 LEAVE;
7708 }
7709
7710 /**
7711 * ipr_probe - Adapter hot plug add entry point
7712 *
7713 * Return value:
7714 * 0 on success / non-zero on failure
7715 **/
7716 static int __devinit ipr_probe(struct pci_dev *pdev,
7717 const struct pci_device_id *dev_id)
7718 {
7719 struct ipr_ioa_cfg *ioa_cfg;
7720 int rc;
7721
7722 rc = ipr_probe_ioa(pdev, dev_id);
7723
7724 if (rc)
7725 return rc;
7726
7727 ioa_cfg = pci_get_drvdata(pdev);
7728 rc = ipr_probe_ioa_part2(ioa_cfg);
7729
7730 if (rc) {
7731 __ipr_remove(pdev);
7732 return rc;
7733 }
7734
7735 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7736
7737 if (rc) {
7738 __ipr_remove(pdev);
7739 return rc;
7740 }
7741
7742 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7743 &ipr_trace_attr);
7744
7745 if (rc) {
7746 scsi_remove_host(ioa_cfg->host);
7747 __ipr_remove(pdev);
7748 return rc;
7749 }
7750
7751 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7752 &ipr_dump_attr);
7753
7754 if (rc) {
7755 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7756 &ipr_trace_attr);
7757 scsi_remove_host(ioa_cfg->host);
7758 __ipr_remove(pdev);
7759 return rc;
7760 }
7761
7762 scsi_scan_host(ioa_cfg->host);
7763 ipr_scan_vsets(ioa_cfg);
7764 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7765 ioa_cfg->allow_ml_add_del = 1;
7766 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7767 schedule_work(&ioa_cfg->work_q);
7768 return 0;
7769 }
7770
7771 /**
7772 * ipr_shutdown - Shutdown handler.
7773 * @pdev: pci device struct
7774 *
7775 * This function is invoked upon system shutdown/reboot. It will issue
7776 * an adapter shutdown to the adapter to flush the write cache.
7777 *
7778 * Return value:
7779 * none
7780 **/
7781 static void ipr_shutdown(struct pci_dev *pdev)
7782 {
7783 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7784 unsigned long lock_flags = 0;
7785
7786 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7787 while(ioa_cfg->in_reset_reload) {
7788 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7789 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7790 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7791 }
7792
7793 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7794 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7795 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7796 }
7797
7798 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7799 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7800 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7801 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7802 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7803 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7804 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7805 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7806 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7807 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7808 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7809 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7810 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7811 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7812 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7813 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7814 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7815 IPR_USE_LONG_TRANSOP_TIMEOUT },
7816 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7817 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7818 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7819 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7820 IPR_USE_LONG_TRANSOP_TIMEOUT },
7821 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7822 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7823 IPR_USE_LONG_TRANSOP_TIMEOUT },
7824 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7825 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7826 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7827 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7828 IPR_USE_LONG_TRANSOP_TIMEOUT},
7829 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7830 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7831 IPR_USE_LONG_TRANSOP_TIMEOUT },
7832 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7833 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7834 IPR_USE_LONG_TRANSOP_TIMEOUT },
7835 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7836 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7837 IPR_USE_LONG_TRANSOP_TIMEOUT },
7838 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7839 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7840 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7841 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7842 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
7843 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7844 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7845 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7846 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7847 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7848 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7849 IPR_USE_LONG_TRANSOP_TIMEOUT },
7850 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7851 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7852 IPR_USE_LONG_TRANSOP_TIMEOUT },
7853 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7854 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7855 IPR_USE_LONG_TRANSOP_TIMEOUT },
7856 { }
7857 };
7858 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7859
7860 static struct pci_error_handlers ipr_err_handler = {
7861 .error_detected = ipr_pci_error_detected,
7862 .slot_reset = ipr_pci_slot_reset,
7863 };
7864
7865 static struct pci_driver ipr_driver = {
7866 .name = IPR_NAME,
7867 .id_table = ipr_pci_table,
7868 .probe = ipr_probe,
7869 .remove = ipr_remove,
7870 .shutdown = ipr_shutdown,
7871 .err_handler = &ipr_err_handler,
7872 .dynids.use_driver_data = 1
7873 };
7874
7875 /**
7876 * ipr_init - Module entry point
7877 *
7878 * Return value:
7879 * 0 on success / negative value on failure
7880 **/
7881 static int __init ipr_init(void)
7882 {
7883 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7884 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7885
7886 return pci_register_driver(&ipr_driver);
7887 }
7888
7889 /**
7890 * ipr_exit - Module unload
7891 *
7892 * Module unload entry point.
7893 *
7894 * Return value:
7895 * none
7896 **/
7897 static void __exit ipr_exit(void)
7898 {
7899 pci_unregister_driver(&ipr_driver);
7900 }
7901
7902 module_init(ipr_init);
7903 module_exit(ipr_exit);
Support for the Chinese Samsung S3C2440 based development boards