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Merge branch 'mini2440-dev-unlikely' into mini2440-dev
[linux-2.6/mini2440.git] / drivers / scsi / ipr.c
blob76d294fc78461c13bdf6aae03dc6c2fc2273a0cf
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 <linux/hdreg.h>
75 #include <asm/io.h>
76 #include <asm/irq.h>
77 #include <asm/processor.h>
78 #include <scsi/scsi.h>
79 #include <scsi/scsi_host.h>
80 #include <scsi/scsi_tcq.h>
81 #include <scsi/scsi_eh.h>
82 #include <scsi/scsi_cmnd.h>
83 #include "ipr.h"
84
85 /*
86 * Global Data
87 */
88 static LIST_HEAD(ipr_ioa_head);
89 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90 static unsigned int ipr_max_speed = 1;
91 static int ipr_testmode = 0;
92 static unsigned int ipr_fastfail = 0;
93 static unsigned int ipr_transop_timeout = 0;
94 static unsigned int ipr_enable_cache = 1;
95 static unsigned int ipr_debug = 0;
96 static unsigned int ipr_dual_ioa_raid = 1;
97 static DEFINE_SPINLOCK(ipr_driver_lock);
98
99 /* This table describes the differences between DMA controller chips */
100 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
101 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
102 .mailbox = 0x0042C,
103 .cache_line_size = 0x20,
104 {
105 .set_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_mask_reg = 0x00230,
107 .sense_interrupt_mask_reg = 0x0022C,
108 .clr_interrupt_reg = 0x00228,
109 .sense_interrupt_reg = 0x00224,
110 .ioarrin_reg = 0x00404,
111 .sense_uproc_interrupt_reg = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .clr_uproc_interrupt_reg = 0x00218
114 }
115 },
116 { /* Snipe and Scamp */
117 .mailbox = 0x0052C,
118 .cache_line_size = 0x20,
119 {
120 .set_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_mask_reg = 0x0028C,
122 .sense_interrupt_mask_reg = 0x00288,
123 .clr_interrupt_reg = 0x00284,
124 .sense_interrupt_reg = 0x00280,
125 .ioarrin_reg = 0x00504,
126 .sense_uproc_interrupt_reg = 0x00290,
127 .set_uproc_interrupt_reg = 0x00290,
128 .clr_uproc_interrupt_reg = 0x00294
129 }
130 },
131 };
132
133 static const struct ipr_chip_t ipr_chip[] = {
134 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, &ipr_chip_cfg[0] },
138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, &ipr_chip_cfg[0] },
139 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, &ipr_chip_cfg[1] },
140 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, &ipr_chip_cfg[1] }
141 };
142
143 static int ipr_max_bus_speeds [] = {
144 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
145 };
146
147 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
148 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
149 module_param_named(max_speed, ipr_max_speed, uint, 0);
150 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
151 module_param_named(log_level, ipr_log_level, uint, 0);
152 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
153 module_param_named(testmode, ipr_testmode, int, 0);
154 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
155 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
156 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
157 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
158 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
159 module_param_named(enable_cache, ipr_enable_cache, int, 0);
160 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
161 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
162 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
163 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
164 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
165 MODULE_LICENSE("GPL");
166 MODULE_VERSION(IPR_DRIVER_VERSION);
167
168 /* A constant array of IOASCs/URCs/Error Messages */
169 static const
170 struct ipr_error_table_t ipr_error_table[] = {
171 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
172 "8155: An unknown error was received"},
173 {0x00330000, 0, 0,
174 "Soft underlength error"},
175 {0x005A0000, 0, 0,
176 "Command to be cancelled not found"},
177 {0x00808000, 0, 0,
178 "Qualified success"},
179 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
180 "FFFE: Soft device bus error recovered by the IOA"},
181 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
182 "4101: Soft device bus fabric error"},
183 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
184 "FFF9: Device sector reassign successful"},
185 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
186 "FFF7: Media error recovered by device rewrite procedures"},
187 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
188 "7001: IOA sector reassignment successful"},
189 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
190 "FFF9: Soft media error. Sector reassignment recommended"},
191 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
192 "FFF7: Media error recovered by IOA rewrite procedures"},
193 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
194 "FF3D: Soft PCI bus error recovered by the IOA"},
195 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
196 "FFF6: Device hardware error recovered by the IOA"},
197 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
198 "FFF6: Device hardware error recovered by the device"},
199 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
200 "FF3D: Soft IOA error recovered by the IOA"},
201 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
202 "FFFA: Undefined device response recovered by the IOA"},
203 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
204 "FFF6: Device bus error, message or command phase"},
205 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
206 "FFFE: Task Management Function failed"},
207 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
208 "FFF6: Failure prediction threshold exceeded"},
209 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
210 "8009: Impending cache battery pack failure"},
211 {0x02040400, 0, 0,
212 "34FF: Disk device format in progress"},
213 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
214 "9070: IOA requested reset"},
215 {0x023F0000, 0, 0,
216 "Synchronization required"},
217 {0x024E0000, 0, 0,
218 "No ready, IOA shutdown"},
219 {0x025A0000, 0, 0,
220 "Not ready, IOA has been shutdown"},
221 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
222 "3020: Storage subsystem configuration error"},
223 {0x03110B00, 0, 0,
224 "FFF5: Medium error, data unreadable, recommend reassign"},
225 {0x03110C00, 0, 0,
226 "7000: Medium error, data unreadable, do not reassign"},
227 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
228 "FFF3: Disk media format bad"},
229 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
230 "3002: Addressed device failed to respond to selection"},
231 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
232 "3100: Device bus error"},
233 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
234 "3109: IOA timed out a device command"},
235 {0x04088000, 0, 0,
236 "3120: SCSI bus is not operational"},
237 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
238 "4100: Hard device bus fabric error"},
239 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
240 "9000: IOA reserved area data check"},
241 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
242 "9001: IOA reserved area invalid data pattern"},
243 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
244 "9002: IOA reserved area LRC error"},
245 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
246 "102E: Out of alternate sectors for disk storage"},
247 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
248 "FFF4: Data transfer underlength error"},
249 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
250 "FFF4: Data transfer overlength error"},
251 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
252 "3400: Logical unit failure"},
253 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
254 "FFF4: Device microcode is corrupt"},
255 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
256 "8150: PCI bus error"},
257 {0x04430000, 1, 0,
258 "Unsupported device bus message received"},
259 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
260 "FFF4: Disk device problem"},
261 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
262 "8150: Permanent IOA failure"},
263 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
264 "3010: Disk device returned wrong response to IOA"},
265 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
266 "8151: IOA microcode error"},
267 {0x04448500, 0, 0,
268 "Device bus status error"},
269 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
270 "8157: IOA error requiring IOA reset to recover"},
271 {0x04448700, 0, 0,
272 "ATA device status error"},
273 {0x04490000, 0, 0,
274 "Message reject received from the device"},
275 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
276 "8008: A permanent cache battery pack failure occurred"},
277 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
278 "9090: Disk unit has been modified after the last known status"},
279 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
280 "9081: IOA detected device error"},
281 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
282 "9082: IOA detected device error"},
283 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
284 "3110: Device bus error, message or command phase"},
285 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
286 "3110: SAS Command / Task Management Function failed"},
287 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
288 "9091: Incorrect hardware configuration change has been detected"},
289 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
290 "9073: Invalid multi-adapter configuration"},
291 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
292 "4010: Incorrect connection between cascaded expanders"},
293 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
294 "4020: Connections exceed IOA design limits"},
295 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
296 "4030: Incorrect multipath connection"},
297 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
298 "4110: Unsupported enclosure function"},
299 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
300 "FFF4: Command to logical unit failed"},
301 {0x05240000, 1, 0,
302 "Illegal request, invalid request type or request packet"},
303 {0x05250000, 0, 0,
304 "Illegal request, invalid resource handle"},
305 {0x05258000, 0, 0,
306 "Illegal request, commands not allowed to this device"},
307 {0x05258100, 0, 0,
308 "Illegal request, command not allowed to a secondary adapter"},
309 {0x05260000, 0, 0,
310 "Illegal request, invalid field in parameter list"},
311 {0x05260100, 0, 0,
312 "Illegal request, parameter not supported"},
313 {0x05260200, 0, 0,
314 "Illegal request, parameter value invalid"},
315 {0x052C0000, 0, 0,
316 "Illegal request, command sequence error"},
317 {0x052C8000, 1, 0,
318 "Illegal request, dual adapter support not enabled"},
319 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
320 "9031: Array protection temporarily suspended, protection resuming"},
321 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
322 "9040: Array protection temporarily suspended, protection resuming"},
323 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
324 "3140: Device bus not ready to ready transition"},
325 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
326 "FFFB: SCSI bus was reset"},
327 {0x06290500, 0, 0,
328 "FFFE: SCSI bus transition to single ended"},
329 {0x06290600, 0, 0,
330 "FFFE: SCSI bus transition to LVD"},
331 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
332 "FFFB: SCSI bus was reset by another initiator"},
333 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
334 "3029: A device replacement has occurred"},
335 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
336 "9051: IOA cache data exists for a missing or failed device"},
337 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
338 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
339 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
340 "9025: Disk unit is not supported at its physical location"},
341 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
342 "3020: IOA detected a SCSI bus configuration error"},
343 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
344 "3150: SCSI bus configuration error"},
345 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
346 "9074: Asymmetric advanced function disk configuration"},
347 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
348 "4040: Incomplete multipath connection between IOA and enclosure"},
349 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
350 "4041: Incomplete multipath connection between enclosure and device"},
351 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
352 "9075: Incomplete multipath connection between IOA and remote IOA"},
353 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
354 "9076: Configuration error, missing remote IOA"},
355 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
356 "4050: Enclosure does not support a required multipath function"},
357 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
358 "4070: Logically bad block written on device"},
359 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
360 "9041: Array protection temporarily suspended"},
361 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
362 "9042: Corrupt array parity detected on specified device"},
363 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
364 "9030: Array no longer protected due to missing or failed disk unit"},
365 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
366 "9071: Link operational transition"},
367 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
368 "9072: Link not operational transition"},
369 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
370 "9032: Array exposed but still protected"},
371 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
372 "70DD: Device forced failed by disrupt device command"},
373 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
374 "4061: Multipath redundancy level got better"},
375 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
376 "4060: Multipath redundancy level got worse"},
377 {0x07270000, 0, 0,
378 "Failure due to other device"},
379 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
380 "9008: IOA does not support functions expected by devices"},
381 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
382 "9010: Cache data associated with attached devices cannot be found"},
383 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
384 "9011: Cache data belongs to devices other than those attached"},
385 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
386 "9020: Array missing 2 or more devices with only 1 device present"},
387 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
388 "9021: Array missing 2 or more devices with 2 or more devices present"},
389 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
390 "9022: Exposed array is missing a required device"},
391 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
392 "9023: Array member(s) not at required physical locations"},
393 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
394 "9024: Array not functional due to present hardware configuration"},
395 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
396 "9026: Array not functional due to present hardware configuration"},
397 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
398 "9027: Array is missing a device and parity is out of sync"},
399 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
400 "9028: Maximum number of arrays already exist"},
401 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
402 "9050: Required cache data cannot be located for a disk unit"},
403 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
404 "9052: Cache data exists for a device that has been modified"},
405 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
406 "9054: IOA resources not available due to previous problems"},
407 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
408 "9092: Disk unit requires initialization before use"},
409 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
410 "9029: Incorrect hardware configuration change has been detected"},
411 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
412 "9060: One or more disk pairs are missing from an array"},
413 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
414 "9061: One or more disks are missing from an array"},
415 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
416 "9062: One or more disks are missing from an array"},
417 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
418 "9063: Maximum number of functional arrays has been exceeded"},
419 {0x0B260000, 0, 0,
420 "Aborted command, invalid descriptor"},
421 {0x0B5A0000, 0, 0,
422 "Command terminated by host"}
423 };
424
425 static const struct ipr_ses_table_entry ipr_ses_table[] = {
426 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
427 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
428 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
429 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
430 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
431 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
432 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
433 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
434 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
435 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
436 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
437 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
438 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
439 };
440
441 /*
442 * Function Prototypes
443 */
444 static int ipr_reset_alert(struct ipr_cmnd *);
445 static void ipr_process_ccn(struct ipr_cmnd *);
446 static void ipr_process_error(struct ipr_cmnd *);
447 static void ipr_reset_ioa_job(struct ipr_cmnd *);
448 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
449 enum ipr_shutdown_type);
450
451 #ifdef CONFIG_SCSI_IPR_TRACE
452 /**
453 * ipr_trc_hook - Add a trace entry to the driver trace
454 * @ipr_cmd: ipr command struct
455 * @type: trace type
456 * @add_data: additional data
457 *
458 * Return value:
459 * none
460 **/
461 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
462 u8 type, u32 add_data)
463 {
464 struct ipr_trace_entry *trace_entry;
465 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
466
467 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
468 trace_entry->time = jiffies;
469 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
470 trace_entry->type = type;
471 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
472 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
473 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
474 trace_entry->u.add_data = add_data;
475 }
476 #else
477 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
478 #endif
479
480 /**
481 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
482 * @ipr_cmd: ipr command struct
483 *
484 * Return value:
485 * none
486 **/
487 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
488 {
489 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
490 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
491 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
492
493 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
494 ioarcb->write_data_transfer_length = 0;
495 ioarcb->read_data_transfer_length = 0;
496 ioarcb->write_ioadl_len = 0;
497 ioarcb->read_ioadl_len = 0;
498 ioarcb->write_ioadl_addr =
499 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
500 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
501 ioasa->ioasc = 0;
502 ioasa->residual_data_len = 0;
503 ioasa->u.gata.status = 0;
504
505 ipr_cmd->scsi_cmd = NULL;
506 ipr_cmd->qc = NULL;
507 ipr_cmd->sense_buffer[0] = 0;
508 ipr_cmd->dma_use_sg = 0;
509 }
510
511 /**
512 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
513 * @ipr_cmd: ipr command struct
514 *
515 * Return value:
516 * none
517 **/
518 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
519 {
520 ipr_reinit_ipr_cmnd(ipr_cmd);
521 ipr_cmd->u.scratch = 0;
522 ipr_cmd->sibling = NULL;
523 init_timer(&ipr_cmd->timer);
524 }
525
526 /**
527 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
528 * @ioa_cfg: ioa config struct
529 *
530 * Return value:
531 * pointer to ipr command struct
532 **/
533 static
534 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
535 {
536 struct ipr_cmnd *ipr_cmd;
537
538 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
539 list_del(&ipr_cmd->queue);
540 ipr_init_ipr_cmnd(ipr_cmd);
541
542 return ipr_cmd;
543 }
544
545 /**
546 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
547 * @ioa_cfg: ioa config struct
548 * @clr_ints: interrupts to clear
549 *
550 * This function masks all interrupts on the adapter, then clears the
551 * interrupts specified in the mask
552 *
553 * Return value:
554 * none
555 **/
556 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
557 u32 clr_ints)
558 {
559 volatile u32 int_reg;
560
561 /* Stop new interrupts */
562 ioa_cfg->allow_interrupts = 0;
563
564 /* Set interrupt mask to stop all new interrupts */
565 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
566
567 /* Clear any pending interrupts */
568 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
569 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
570 }
571
572 /**
573 * ipr_save_pcix_cmd_reg - Save PCI-X command register
574 * @ioa_cfg: ioa config struct
575 *
576 * Return value:
577 * 0 on success / -EIO on failure
578 **/
579 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
580 {
581 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
582
583 if (pcix_cmd_reg == 0)
584 return 0;
585
586 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
587 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
588 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
589 return -EIO;
590 }
591
592 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
593 return 0;
594 }
595
596 /**
597 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
598 * @ioa_cfg: ioa config struct
599 *
600 * Return value:
601 * 0 on success / -EIO on failure
602 **/
603 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
604 {
605 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
606
607 if (pcix_cmd_reg) {
608 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
609 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
610 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
611 return -EIO;
612 }
613 }
614
615 return 0;
616 }
617
618 /**
619 * ipr_sata_eh_done - done function for aborted SATA commands
620 * @ipr_cmd: ipr command struct
621 *
622 * This function is invoked for ops generated to SATA
623 * devices which are being aborted.
624 *
625 * Return value:
626 * none
627 **/
628 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
629 {
630 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
631 struct ata_queued_cmd *qc = ipr_cmd->qc;
632 struct ipr_sata_port *sata_port = qc->ap->private_data;
633
634 qc->err_mask |= AC_ERR_OTHER;
635 sata_port->ioasa.status |= ATA_BUSY;
636 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
637 ata_qc_complete(qc);
638 }
639
640 /**
641 * ipr_scsi_eh_done - mid-layer done function for aborted ops
642 * @ipr_cmd: ipr command struct
643 *
644 * This function is invoked by the interrupt handler for
645 * ops generated by the SCSI mid-layer which are being aborted.
646 *
647 * Return value:
648 * none
649 **/
650 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
651 {
652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
653 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
654
655 scsi_cmd->result |= (DID_ERROR << 16);
656
657 scsi_dma_unmap(ipr_cmd->scsi_cmd);
658 scsi_cmd->scsi_done(scsi_cmd);
659 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
660 }
661
662 /**
663 * ipr_fail_all_ops - Fails all outstanding ops.
664 * @ioa_cfg: ioa config struct
665 *
666 * This function fails all outstanding ops.
667 *
668 * Return value:
669 * none
670 **/
671 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
672 {
673 struct ipr_cmnd *ipr_cmd, *temp;
674
675 ENTER;
676 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
677 list_del(&ipr_cmd->queue);
678
679 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
680 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
681
682 if (ipr_cmd->scsi_cmd)
683 ipr_cmd->done = ipr_scsi_eh_done;
684 else if (ipr_cmd->qc)
685 ipr_cmd->done = ipr_sata_eh_done;
686
687 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
688 del_timer(&ipr_cmd->timer);
689 ipr_cmd->done(ipr_cmd);
690 }
691
692 LEAVE;
693 }
694
695 /**
696 * ipr_do_req - Send driver initiated requests.
697 * @ipr_cmd: ipr command struct
698 * @done: done function
699 * @timeout_func: timeout function
700 * @timeout: timeout value
701 *
702 * This function sends the specified command to the adapter with the
703 * timeout given. The done function is invoked on command completion.
704 *
705 * Return value:
706 * none
707 **/
708 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
709 void (*done) (struct ipr_cmnd *),
710 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
711 {
712 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
713
714 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
715
716 ipr_cmd->done = done;
717
718 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
719 ipr_cmd->timer.expires = jiffies + timeout;
720 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
721
722 add_timer(&ipr_cmd->timer);
723
724 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
725
726 mb();
727 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
728 ioa_cfg->regs.ioarrin_reg);
729 }
730
731 /**
732 * ipr_internal_cmd_done - Op done function for an internally generated op.
733 * @ipr_cmd: ipr command struct
734 *
735 * This function is the op done function for an internally generated,
736 * blocking op. It simply wakes the sleeping thread.
737 *
738 * Return value:
739 * none
740 **/
741 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
742 {
743 if (ipr_cmd->sibling)
744 ipr_cmd->sibling = NULL;
745 else
746 complete(&ipr_cmd->completion);
747 }
748
749 /**
750 * ipr_send_blocking_cmd - Send command and sleep on its completion.
751 * @ipr_cmd: ipr command struct
752 * @timeout_func: function to invoke if command times out
753 * @timeout: timeout
754 *
755 * Return value:
756 * none
757 **/
758 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
759 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
760 u32 timeout)
761 {
762 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
763
764 init_completion(&ipr_cmd->completion);
765 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
766
767 spin_unlock_irq(ioa_cfg->host->host_lock);
768 wait_for_completion(&ipr_cmd->completion);
769 spin_lock_irq(ioa_cfg->host->host_lock);
770 }
771
772 /**
773 * ipr_send_hcam - Send an HCAM to the adapter.
774 * @ioa_cfg: ioa config struct
775 * @type: HCAM type
776 * @hostrcb: hostrcb struct
777 *
778 * This function will send a Host Controlled Async command to the adapter.
779 * If HCAMs are currently not allowed to be issued to the adapter, it will
780 * place the hostrcb on the free queue.
781 *
782 * Return value:
783 * none
784 **/
785 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
786 struct ipr_hostrcb *hostrcb)
787 {
788 struct ipr_cmnd *ipr_cmd;
789 struct ipr_ioarcb *ioarcb;
790
791 if (ioa_cfg->allow_cmds) {
792 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
793 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
794 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
795
796 ipr_cmd->u.hostrcb = hostrcb;
797 ioarcb = &ipr_cmd->ioarcb;
798
799 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
800 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
801 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
802 ioarcb->cmd_pkt.cdb[1] = type;
803 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
804 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
805
806 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
807 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
808 ipr_cmd->ioadl[0].flags_and_data_len =
809 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
810 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
811
812 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
813 ipr_cmd->done = ipr_process_ccn;
814 else
815 ipr_cmd->done = ipr_process_error;
816
817 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
818
819 mb();
820 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
821 ioa_cfg->regs.ioarrin_reg);
822 } else {
823 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
824 }
825 }
826
827 /**
828 * ipr_init_res_entry - Initialize a resource entry struct.
829 * @res: resource entry struct
830 *
831 * Return value:
832 * none
833 **/
834 static void ipr_init_res_entry(struct ipr_resource_entry *res)
835 {
836 res->needs_sync_complete = 0;
837 res->in_erp = 0;
838 res->add_to_ml = 0;
839 res->del_from_ml = 0;
840 res->resetting_device = 0;
841 res->sdev = NULL;
842 res->sata_port = NULL;
843 }
844
845 /**
846 * ipr_handle_config_change - Handle a config change from the adapter
847 * @ioa_cfg: ioa config struct
848 * @hostrcb: hostrcb
849 *
850 * Return value:
851 * none
852 **/
853 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
854 struct ipr_hostrcb *hostrcb)
855 {
856 struct ipr_resource_entry *res = NULL;
857 struct ipr_config_table_entry *cfgte;
858 u32 is_ndn = 1;
859
860 cfgte = &hostrcb->hcam.u.ccn.cfgte;
861
862 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
863 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
864 sizeof(cfgte->res_addr))) {
865 is_ndn = 0;
866 break;
867 }
868 }
869
870 if (is_ndn) {
871 if (list_empty(&ioa_cfg->free_res_q)) {
872 ipr_send_hcam(ioa_cfg,
873 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
874 hostrcb);
875 return;
876 }
877
878 res = list_entry(ioa_cfg->free_res_q.next,
879 struct ipr_resource_entry, queue);
880
881 list_del(&res->queue);
882 ipr_init_res_entry(res);
883 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
884 }
885
886 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
887
888 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
889 if (res->sdev) {
890 res->del_from_ml = 1;
891 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
892 if (ioa_cfg->allow_ml_add_del)
893 schedule_work(&ioa_cfg->work_q);
894 } else
895 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
896 } else if (!res->sdev) {
897 res->add_to_ml = 1;
898 if (ioa_cfg->allow_ml_add_del)
899 schedule_work(&ioa_cfg->work_q);
900 }
901
902 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
903 }
904
905 /**
906 * ipr_process_ccn - Op done function for a CCN.
907 * @ipr_cmd: ipr command struct
908 *
909 * This function is the op done function for a configuration
910 * change notification host controlled async from the adapter.
911 *
912 * Return value:
913 * none
914 **/
915 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
916 {
917 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
918 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
919 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
920
921 list_del(&hostrcb->queue);
922 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
923
924 if (ioasc) {
925 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
926 dev_err(&ioa_cfg->pdev->dev,
927 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
928
929 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
930 } else {
931 ipr_handle_config_change(ioa_cfg, hostrcb);
932 }
933 }
934
935 /**
936 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
937 * @i: index into buffer
938 * @buf: string to modify
939 *
940 * This function will strip all trailing whitespace, pad the end
941 * of the string with a single space, and NULL terminate the string.
942 *
943 * Return value:
944 * new length of string
945 **/
946 static int strip_and_pad_whitespace(int i, char *buf)
947 {
948 while (i && buf[i] == ' ')
949 i--;
950 buf[i+1] = ' ';
951 buf[i+2] = '\0';
952 return i + 2;
953 }
954
955 /**
956 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
957 * @prefix: string to print at start of printk
958 * @hostrcb: hostrcb pointer
959 * @vpd: vendor/product id/sn struct
960 *
961 * Return value:
962 * none
963 **/
964 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
965 struct ipr_vpd *vpd)
966 {
967 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
968 int i = 0;
969
970 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
971 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
972
973 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
974 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
975
976 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
977 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
978
979 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
980 }
981
982 /**
983 * ipr_log_vpd - Log the passed VPD to the error log.
984 * @vpd: vendor/product id/sn struct
985 *
986 * Return value:
987 * none
988 **/
989 static void ipr_log_vpd(struct ipr_vpd *vpd)
990 {
991 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
992 + IPR_SERIAL_NUM_LEN];
993
994 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
995 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
996 IPR_PROD_ID_LEN);
997 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
998 ipr_err("Vendor/Product ID: %s\n", buffer);
999
1000 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1001 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1002 ipr_err(" Serial Number: %s\n", buffer);
1003 }
1004
1005 /**
1006 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1007 * @prefix: string to print at start of printk
1008 * @hostrcb: hostrcb pointer
1009 * @vpd: vendor/product id/sn/wwn struct
1010 *
1011 * Return value:
1012 * none
1013 **/
1014 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1015 struct ipr_ext_vpd *vpd)
1016 {
1017 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1018 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1019 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1020 }
1021
1022 /**
1023 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1024 * @vpd: vendor/product id/sn/wwn struct
1025 *
1026 * Return value:
1027 * none
1028 **/
1029 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1030 {
1031 ipr_log_vpd(&vpd->vpd);
1032 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1033 be32_to_cpu(vpd->wwid[1]));
1034 }
1035
1036 /**
1037 * ipr_log_enhanced_cache_error - Log a cache error.
1038 * @ioa_cfg: ioa config struct
1039 * @hostrcb: hostrcb struct
1040 *
1041 * Return value:
1042 * none
1043 **/
1044 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1045 struct ipr_hostrcb *hostrcb)
1046 {
1047 struct ipr_hostrcb_type_12_error *error =
1048 &hostrcb->hcam.u.error.u.type_12_error;
1049
1050 ipr_err("-----Current Configuration-----\n");
1051 ipr_err("Cache Directory Card Information:\n");
1052 ipr_log_ext_vpd(&error->ioa_vpd);
1053 ipr_err("Adapter Card Information:\n");
1054 ipr_log_ext_vpd(&error->cfc_vpd);
1055
1056 ipr_err("-----Expected Configuration-----\n");
1057 ipr_err("Cache Directory Card Information:\n");
1058 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1059 ipr_err("Adapter Card Information:\n");
1060 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1061
1062 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1063 be32_to_cpu(error->ioa_data[0]),
1064 be32_to_cpu(error->ioa_data[1]),
1065 be32_to_cpu(error->ioa_data[2]));
1066 }
1067
1068 /**
1069 * ipr_log_cache_error - Log a cache error.
1070 * @ioa_cfg: ioa config struct
1071 * @hostrcb: hostrcb struct
1072 *
1073 * Return value:
1074 * none
1075 **/
1076 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1077 struct ipr_hostrcb *hostrcb)
1078 {
1079 struct ipr_hostrcb_type_02_error *error =
1080 &hostrcb->hcam.u.error.u.type_02_error;
1081
1082 ipr_err("-----Current Configuration-----\n");
1083 ipr_err("Cache Directory Card Information:\n");
1084 ipr_log_vpd(&error->ioa_vpd);
1085 ipr_err("Adapter Card Information:\n");
1086 ipr_log_vpd(&error->cfc_vpd);
1087
1088 ipr_err("-----Expected Configuration-----\n");
1089 ipr_err("Cache Directory Card Information:\n");
1090 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1091 ipr_err("Adapter Card Information:\n");
1092 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1093
1094 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1095 be32_to_cpu(error->ioa_data[0]),
1096 be32_to_cpu(error->ioa_data[1]),
1097 be32_to_cpu(error->ioa_data[2]));
1098 }
1099
1100 /**
1101 * ipr_log_enhanced_config_error - Log a configuration error.
1102 * @ioa_cfg: ioa config struct
1103 * @hostrcb: hostrcb struct
1104 *
1105 * Return value:
1106 * none
1107 **/
1108 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1109 struct ipr_hostrcb *hostrcb)
1110 {
1111 int errors_logged, i;
1112 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1113 struct ipr_hostrcb_type_13_error *error;
1114
1115 error = &hostrcb->hcam.u.error.u.type_13_error;
1116 errors_logged = be32_to_cpu(error->errors_logged);
1117
1118 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1119 be32_to_cpu(error->errors_detected), errors_logged);
1120
1121 dev_entry = error->dev;
1122
1123 for (i = 0; i < errors_logged; i++, dev_entry++) {
1124 ipr_err_separator;
1125
1126 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1127 ipr_log_ext_vpd(&dev_entry->vpd);
1128
1129 ipr_err("-----New Device Information-----\n");
1130 ipr_log_ext_vpd(&dev_entry->new_vpd);
1131
1132 ipr_err("Cache Directory Card Information:\n");
1133 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1134
1135 ipr_err("Adapter Card Information:\n");
1136 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1137 }
1138 }
1139
1140 /**
1141 * ipr_log_config_error - Log a configuration error.
1142 * @ioa_cfg: ioa config struct
1143 * @hostrcb: hostrcb struct
1144 *
1145 * Return value:
1146 * none
1147 **/
1148 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1149 struct ipr_hostrcb *hostrcb)
1150 {
1151 int errors_logged, i;
1152 struct ipr_hostrcb_device_data_entry *dev_entry;
1153 struct ipr_hostrcb_type_03_error *error;
1154
1155 error = &hostrcb->hcam.u.error.u.type_03_error;
1156 errors_logged = be32_to_cpu(error->errors_logged);
1157
1158 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1159 be32_to_cpu(error->errors_detected), errors_logged);
1160
1161 dev_entry = error->dev;
1162
1163 for (i = 0; i < errors_logged; i++, dev_entry++) {
1164 ipr_err_separator;
1165
1166 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1167 ipr_log_vpd(&dev_entry->vpd);
1168
1169 ipr_err("-----New Device Information-----\n");
1170 ipr_log_vpd(&dev_entry->new_vpd);
1171
1172 ipr_err("Cache Directory Card Information:\n");
1173 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1174
1175 ipr_err("Adapter Card Information:\n");
1176 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1177
1178 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1179 be32_to_cpu(dev_entry->ioa_data[0]),
1180 be32_to_cpu(dev_entry->ioa_data[1]),
1181 be32_to_cpu(dev_entry->ioa_data[2]),
1182 be32_to_cpu(dev_entry->ioa_data[3]),
1183 be32_to_cpu(dev_entry->ioa_data[4]));
1184 }
1185 }
1186
1187 /**
1188 * ipr_log_enhanced_array_error - Log an array configuration error.
1189 * @ioa_cfg: ioa config struct
1190 * @hostrcb: hostrcb struct
1191 *
1192 * Return value:
1193 * none
1194 **/
1195 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1196 struct ipr_hostrcb *hostrcb)
1197 {
1198 int i, num_entries;
1199 struct ipr_hostrcb_type_14_error *error;
1200 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1201 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1202
1203 error = &hostrcb->hcam.u.error.u.type_14_error;
1204
1205 ipr_err_separator;
1206
1207 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1208 error->protection_level,
1209 ioa_cfg->host->host_no,
1210 error->last_func_vset_res_addr.bus,
1211 error->last_func_vset_res_addr.target,
1212 error->last_func_vset_res_addr.lun);
1213
1214 ipr_err_separator;
1215
1216 array_entry = error->array_member;
1217 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1218 sizeof(error->array_member));
1219
1220 for (i = 0; i < num_entries; i++, array_entry++) {
1221 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1222 continue;
1223
1224 if (be32_to_cpu(error->exposed_mode_adn) == i)
1225 ipr_err("Exposed Array Member %d:\n", i);
1226 else
1227 ipr_err("Array Member %d:\n", i);
1228
1229 ipr_log_ext_vpd(&array_entry->vpd);
1230 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1231 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1232 "Expected Location");
1233
1234 ipr_err_separator;
1235 }
1236 }
1237
1238 /**
1239 * ipr_log_array_error - Log an array configuration error.
1240 * @ioa_cfg: ioa config struct
1241 * @hostrcb: hostrcb struct
1242 *
1243 * Return value:
1244 * none
1245 **/
1246 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1247 struct ipr_hostrcb *hostrcb)
1248 {
1249 int i;
1250 struct ipr_hostrcb_type_04_error *error;
1251 struct ipr_hostrcb_array_data_entry *array_entry;
1252 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1253
1254 error = &hostrcb->hcam.u.error.u.type_04_error;
1255
1256 ipr_err_separator;
1257
1258 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1259 error->protection_level,
1260 ioa_cfg->host->host_no,
1261 error->last_func_vset_res_addr.bus,
1262 error->last_func_vset_res_addr.target,
1263 error->last_func_vset_res_addr.lun);
1264
1265 ipr_err_separator;
1266
1267 array_entry = error->array_member;
1268
1269 for (i = 0; i < 18; i++) {
1270 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1271 continue;
1272
1273 if (be32_to_cpu(error->exposed_mode_adn) == i)
1274 ipr_err("Exposed Array Member %d:\n", i);
1275 else
1276 ipr_err("Array Member %d:\n", i);
1277
1278 ipr_log_vpd(&array_entry->vpd);
1279
1280 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1281 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1282 "Expected Location");
1283
1284 ipr_err_separator;
1285
1286 if (i == 9)
1287 array_entry = error->array_member2;
1288 else
1289 array_entry++;
1290 }
1291 }
1292
1293 /**
1294 * ipr_log_hex_data - Log additional hex IOA error data.
1295 * @ioa_cfg: ioa config struct
1296 * @data: IOA error data
1297 * @len: data length
1298 *
1299 * Return value:
1300 * none
1301 **/
1302 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1303 {
1304 int i;
1305
1306 if (len == 0)
1307 return;
1308
1309 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1310 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1311
1312 for (i = 0; i < len / 4; i += 4) {
1313 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1314 be32_to_cpu(data[i]),
1315 be32_to_cpu(data[i+1]),
1316 be32_to_cpu(data[i+2]),
1317 be32_to_cpu(data[i+3]));
1318 }
1319 }
1320
1321 /**
1322 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1323 * @ioa_cfg: ioa config struct
1324 * @hostrcb: hostrcb struct
1325 *
1326 * Return value:
1327 * none
1328 **/
1329 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1330 struct ipr_hostrcb *hostrcb)
1331 {
1332 struct ipr_hostrcb_type_17_error *error;
1333
1334 error = &hostrcb->hcam.u.error.u.type_17_error;
1335 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1336 strstrip(error->failure_reason);
1337
1338 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1339 be32_to_cpu(hostrcb->hcam.u.error.prc));
1340 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1341 ipr_log_hex_data(ioa_cfg, error->data,
1342 be32_to_cpu(hostrcb->hcam.length) -
1343 (offsetof(struct ipr_hostrcb_error, u) +
1344 offsetof(struct ipr_hostrcb_type_17_error, data)));
1345 }
1346
1347 /**
1348 * ipr_log_dual_ioa_error - Log a dual adapter error.
1349 * @ioa_cfg: ioa config struct
1350 * @hostrcb: hostrcb struct
1351 *
1352 * Return value:
1353 * none
1354 **/
1355 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1356 struct ipr_hostrcb *hostrcb)
1357 {
1358 struct ipr_hostrcb_type_07_error *error;
1359
1360 error = &hostrcb->hcam.u.error.u.type_07_error;
1361 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1362 strstrip(error->failure_reason);
1363
1364 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1365 be32_to_cpu(hostrcb->hcam.u.error.prc));
1366 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1367 ipr_log_hex_data(ioa_cfg, error->data,
1368 be32_to_cpu(hostrcb->hcam.length) -
1369 (offsetof(struct ipr_hostrcb_error, u) +
1370 offsetof(struct ipr_hostrcb_type_07_error, data)));
1371 }
1372
1373 static const struct {
1374 u8 active;
1375 char *desc;
1376 } path_active_desc[] = {
1377 { IPR_PATH_NO_INFO, "Path" },
1378 { IPR_PATH_ACTIVE, "Active path" },
1379 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1380 };
1381
1382 static const struct {
1383 u8 state;
1384 char *desc;
1385 } path_state_desc[] = {
1386 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1387 { IPR_PATH_HEALTHY, "is healthy" },
1388 { IPR_PATH_DEGRADED, "is degraded" },
1389 { IPR_PATH_FAILED, "is failed" }
1390 };
1391
1392 /**
1393 * ipr_log_fabric_path - Log a fabric path error
1394 * @hostrcb: hostrcb struct
1395 * @fabric: fabric descriptor
1396 *
1397 * Return value:
1398 * none
1399 **/
1400 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1401 struct ipr_hostrcb_fabric_desc *fabric)
1402 {
1403 int i, j;
1404 u8 path_state = fabric->path_state;
1405 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1406 u8 state = path_state & IPR_PATH_STATE_MASK;
1407
1408 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1409 if (path_active_desc[i].active != active)
1410 continue;
1411
1412 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1413 if (path_state_desc[j].state != state)
1414 continue;
1415
1416 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1417 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1418 path_active_desc[i].desc, path_state_desc[j].desc,
1419 fabric->ioa_port);
1420 } else if (fabric->cascaded_expander == 0xff) {
1421 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1422 path_active_desc[i].desc, path_state_desc[j].desc,
1423 fabric->ioa_port, fabric->phy);
1424 } else if (fabric->phy == 0xff) {
1425 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1426 path_active_desc[i].desc, path_state_desc[j].desc,
1427 fabric->ioa_port, fabric->cascaded_expander);
1428 } else {
1429 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1430 path_active_desc[i].desc, path_state_desc[j].desc,
1431 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1432 }
1433 return;
1434 }
1435 }
1436
1437 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1438 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1439 }
1440
1441 static const struct {
1442 u8 type;
1443 char *desc;
1444 } path_type_desc[] = {
1445 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1446 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1447 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1448 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1449 };
1450
1451 static const struct {
1452 u8 status;
1453 char *desc;
1454 } path_status_desc[] = {
1455 { IPR_PATH_CFG_NO_PROB, "Functional" },
1456 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1457 { IPR_PATH_CFG_FAILED, "Failed" },
1458 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1459 { IPR_PATH_NOT_DETECTED, "Missing" },
1460 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1461 };
1462
1463 static const char *link_rate[] = {
1464 "unknown",
1465 "disabled",
1466 "phy reset problem",
1467 "spinup hold",
1468 "port selector",
1469 "unknown",
1470 "unknown",
1471 "unknown",
1472 "1.5Gbps",
1473 "3.0Gbps",
1474 "unknown",
1475 "unknown",
1476 "unknown",
1477 "unknown",
1478 "unknown",
1479 "unknown"
1480 };
1481
1482 /**
1483 * ipr_log_path_elem - Log a fabric path element.
1484 * @hostrcb: hostrcb struct
1485 * @cfg: fabric path element struct
1486 *
1487 * Return value:
1488 * none
1489 **/
1490 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1491 struct ipr_hostrcb_config_element *cfg)
1492 {
1493 int i, j;
1494 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1495 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1496
1497 if (type == IPR_PATH_CFG_NOT_EXIST)
1498 return;
1499
1500 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1501 if (path_type_desc[i].type != type)
1502 continue;
1503
1504 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1505 if (path_status_desc[j].status != status)
1506 continue;
1507
1508 if (type == IPR_PATH_CFG_IOA_PORT) {
1509 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1510 path_status_desc[j].desc, path_type_desc[i].desc,
1511 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1512 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1513 } else {
1514 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1515 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1516 path_status_desc[j].desc, path_type_desc[i].desc,
1517 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1518 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1519 } else if (cfg->cascaded_expander == 0xff) {
1520 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1521 "WWN=%08X%08X\n", path_status_desc[j].desc,
1522 path_type_desc[i].desc, cfg->phy,
1523 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1524 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1525 } else if (cfg->phy == 0xff) {
1526 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1527 "WWN=%08X%08X\n", path_status_desc[j].desc,
1528 path_type_desc[i].desc, cfg->cascaded_expander,
1529 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1530 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1531 } else {
1532 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1533 "WWN=%08X%08X\n", path_status_desc[j].desc,
1534 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1535 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1536 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1537 }
1538 }
1539 return;
1540 }
1541 }
1542
1543 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1544 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1545 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1546 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1547 }
1548
1549 /**
1550 * ipr_log_fabric_error - Log a fabric error.
1551 * @ioa_cfg: ioa config struct
1552 * @hostrcb: hostrcb struct
1553 *
1554 * Return value:
1555 * none
1556 **/
1557 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1558 struct ipr_hostrcb *hostrcb)
1559 {
1560 struct ipr_hostrcb_type_20_error *error;
1561 struct ipr_hostrcb_fabric_desc *fabric;
1562 struct ipr_hostrcb_config_element *cfg;
1563 int i, add_len;
1564
1565 error = &hostrcb->hcam.u.error.u.type_20_error;
1566 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1567 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1568
1569 add_len = be32_to_cpu(hostrcb->hcam.length) -
1570 (offsetof(struct ipr_hostrcb_error, u) +
1571 offsetof(struct ipr_hostrcb_type_20_error, desc));
1572
1573 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1574 ipr_log_fabric_path(hostrcb, fabric);
1575 for_each_fabric_cfg(fabric, cfg)
1576 ipr_log_path_elem(hostrcb, cfg);
1577
1578 add_len -= be16_to_cpu(fabric->length);
1579 fabric = (struct ipr_hostrcb_fabric_desc *)
1580 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1581 }
1582
1583 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1584 }
1585
1586 /**
1587 * ipr_log_generic_error - Log an adapter error.
1588 * @ioa_cfg: ioa config struct
1589 * @hostrcb: hostrcb struct
1590 *
1591 * Return value:
1592 * none
1593 **/
1594 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1595 struct ipr_hostrcb *hostrcb)
1596 {
1597 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1598 be32_to_cpu(hostrcb->hcam.length));
1599 }
1600
1601 /**
1602 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1603 * @ioasc: IOASC
1604 *
1605 * This function will return the index of into the ipr_error_table
1606 * for the specified IOASC. If the IOASC is not in the table,
1607 * 0 will be returned, which points to the entry used for unknown errors.
1608 *
1609 * Return value:
1610 * index into the ipr_error_table
1611 **/
1612 static u32 ipr_get_error(u32 ioasc)
1613 {
1614 int i;
1615
1616 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1617 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1618 return i;
1619
1620 return 0;
1621 }
1622
1623 /**
1624 * ipr_handle_log_data - Log an adapter error.
1625 * @ioa_cfg: ioa config struct
1626 * @hostrcb: hostrcb struct
1627 *
1628 * This function logs an adapter error to the system.
1629 *
1630 * Return value:
1631 * none
1632 **/
1633 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1634 struct ipr_hostrcb *hostrcb)
1635 {
1636 u32 ioasc;
1637 int error_index;
1638
1639 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1640 return;
1641
1642 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1643 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1644
1645 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1646
1647 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1648 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1649 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1650 scsi_report_bus_reset(ioa_cfg->host,
1651 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1652 }
1653
1654 error_index = ipr_get_error(ioasc);
1655
1656 if (!ipr_error_table[error_index].log_hcam)
1657 return;
1658
1659 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1660
1661 /* Set indication we have logged an error */
1662 ioa_cfg->errors_logged++;
1663
1664 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
1665 return;
1666 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1667 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1668
1669 switch (hostrcb->hcam.overlay_id) {
1670 case IPR_HOST_RCB_OVERLAY_ID_2:
1671 ipr_log_cache_error(ioa_cfg, hostrcb);
1672 break;
1673 case IPR_HOST_RCB_OVERLAY_ID_3:
1674 ipr_log_config_error(ioa_cfg, hostrcb);
1675 break;
1676 case IPR_HOST_RCB_OVERLAY_ID_4:
1677 case IPR_HOST_RCB_OVERLAY_ID_6:
1678 ipr_log_array_error(ioa_cfg, hostrcb);
1679 break;
1680 case IPR_HOST_RCB_OVERLAY_ID_7:
1681 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1682 break;
1683 case IPR_HOST_RCB_OVERLAY_ID_12:
1684 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1685 break;
1686 case IPR_HOST_RCB_OVERLAY_ID_13:
1687 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1688 break;
1689 case IPR_HOST_RCB_OVERLAY_ID_14:
1690 case IPR_HOST_RCB_OVERLAY_ID_16:
1691 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1692 break;
1693 case IPR_HOST_RCB_OVERLAY_ID_17:
1694 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1695 break;
1696 case IPR_HOST_RCB_OVERLAY_ID_20:
1697 ipr_log_fabric_error(ioa_cfg, hostrcb);
1698 break;
1699 case IPR_HOST_RCB_OVERLAY_ID_1:
1700 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1701 default:
1702 ipr_log_generic_error(ioa_cfg, hostrcb);
1703 break;
1704 }
1705 }
1706
1707 /**
1708 * ipr_process_error - Op done function for an adapter error log.
1709 * @ipr_cmd: ipr command struct
1710 *
1711 * This function is the op done function for an error log host
1712 * controlled async from the adapter. It will log the error and
1713 * send the HCAM back to the adapter.
1714 *
1715 * Return value:
1716 * none
1717 **/
1718 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1719 {
1720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1721 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1722 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1723 u32 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1724
1725 list_del(&hostrcb->queue);
1726 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1727
1728 if (!ioasc) {
1729 ipr_handle_log_data(ioa_cfg, hostrcb);
1730 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
1731 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
1732 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1733 dev_err(&ioa_cfg->pdev->dev,
1734 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1735 }
1736
1737 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1738 }
1739
1740 /**
1741 * ipr_timeout - An internally generated op has timed out.
1742 * @ipr_cmd: ipr command struct
1743 *
1744 * This function blocks host requests and initiates an
1745 * adapter reset.
1746 *
1747 * Return value:
1748 * none
1749 **/
1750 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1751 {
1752 unsigned long lock_flags = 0;
1753 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1754
1755 ENTER;
1756 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1757
1758 ioa_cfg->errors_logged++;
1759 dev_err(&ioa_cfg->pdev->dev,
1760 "Adapter being reset due to command timeout.\n");
1761
1762 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1763 ioa_cfg->sdt_state = GET_DUMP;
1764
1765 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1766 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1767
1768 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1769 LEAVE;
1770 }
1771
1772 /**
1773 * ipr_oper_timeout - Adapter timed out transitioning to operational
1774 * @ipr_cmd: ipr command struct
1775 *
1776 * This function blocks host requests and initiates an
1777 * adapter reset.
1778 *
1779 * Return value:
1780 * none
1781 **/
1782 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1783 {
1784 unsigned long lock_flags = 0;
1785 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1786
1787 ENTER;
1788 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1789
1790 ioa_cfg->errors_logged++;
1791 dev_err(&ioa_cfg->pdev->dev,
1792 "Adapter timed out transitioning to operational.\n");
1793
1794 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1795 ioa_cfg->sdt_state = GET_DUMP;
1796
1797 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1798 if (ipr_fastfail)
1799 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1800 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1801 }
1802
1803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1804 LEAVE;
1805 }
1806
1807 /**
1808 * ipr_reset_reload - Reset/Reload the IOA
1809 * @ioa_cfg: ioa config struct
1810 * @shutdown_type: shutdown type
1811 *
1812 * This function resets the adapter and re-initializes it.
1813 * This function assumes that all new host commands have been stopped.
1814 * Return value:
1815 * SUCCESS / FAILED
1816 **/
1817 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1818 enum ipr_shutdown_type shutdown_type)
1819 {
1820 if (!ioa_cfg->in_reset_reload)
1821 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1822
1823 spin_unlock_irq(ioa_cfg->host->host_lock);
1824 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1825 spin_lock_irq(ioa_cfg->host->host_lock);
1826
1827 /* If we got hit with a host reset while we were already resetting
1828 the adapter for some reason, and the reset failed. */
1829 if (ioa_cfg->ioa_is_dead) {
1830 ipr_trace;
1831 return FAILED;
1832 }
1833
1834 return SUCCESS;
1835 }
1836
1837 /**
1838 * ipr_find_ses_entry - Find matching SES in SES table
1839 * @res: resource entry struct of SES
1840 *
1841 * Return value:
1842 * pointer to SES table entry / NULL on failure
1843 **/
1844 static const struct ipr_ses_table_entry *
1845 ipr_find_ses_entry(struct ipr_resource_entry *res)
1846 {
1847 int i, j, matches;
1848 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1849
1850 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1851 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1852 if (ste->compare_product_id_byte[j] == 'X') {
1853 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1854 matches++;
1855 else
1856 break;
1857 } else
1858 matches++;
1859 }
1860
1861 if (matches == IPR_PROD_ID_LEN)
1862 return ste;
1863 }
1864
1865 return NULL;
1866 }
1867
1868 /**
1869 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1870 * @ioa_cfg: ioa config struct
1871 * @bus: SCSI bus
1872 * @bus_width: bus width
1873 *
1874 * Return value:
1875 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1876 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1877 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1878 * max 160MHz = max 320MB/sec).
1879 **/
1880 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1881 {
1882 struct ipr_resource_entry *res;
1883 const struct ipr_ses_table_entry *ste;
1884 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1885
1886 /* Loop through each config table entry in the config table buffer */
1887 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1888 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1889 continue;
1890
1891 if (bus != res->cfgte.res_addr.bus)
1892 continue;
1893
1894 if (!(ste = ipr_find_ses_entry(res)))
1895 continue;
1896
1897 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1898 }
1899
1900 return max_xfer_rate;
1901 }
1902
1903 /**
1904 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1905 * @ioa_cfg: ioa config struct
1906 * @max_delay: max delay in micro-seconds to wait
1907 *
1908 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1909 *
1910 * Return value:
1911 * 0 on success / other on failure
1912 **/
1913 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1914 {
1915 volatile u32 pcii_reg;
1916 int delay = 1;
1917
1918 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1919 while (delay < max_delay) {
1920 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1921
1922 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1923 return 0;
1924
1925 /* udelay cannot be used if delay is more than a few milliseconds */
1926 if ((delay / 1000) > MAX_UDELAY_MS)
1927 mdelay(delay / 1000);
1928 else
1929 udelay(delay);
1930
1931 delay += delay;
1932 }
1933 return -EIO;
1934 }
1935
1936 /**
1937 * ipr_get_ldump_data_section - Dump IOA memory
1938 * @ioa_cfg: ioa config struct
1939 * @start_addr: adapter address to dump
1940 * @dest: destination kernel buffer
1941 * @length_in_words: length to dump in 4 byte words
1942 *
1943 * Return value:
1944 * 0 on success / -EIO on failure
1945 **/
1946 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1947 u32 start_addr,
1948 __be32 *dest, u32 length_in_words)
1949 {
1950 volatile u32 temp_pcii_reg;
1951 int i, delay = 0;
1952
1953 /* Write IOA interrupt reg starting LDUMP state */
1954 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1955 ioa_cfg->regs.set_uproc_interrupt_reg);
1956
1957 /* Wait for IO debug acknowledge */
1958 if (ipr_wait_iodbg_ack(ioa_cfg,
1959 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1960 dev_err(&ioa_cfg->pdev->dev,
1961 "IOA dump long data transfer timeout\n");
1962 return -EIO;
1963 }
1964
1965 /* Signal LDUMP interlocked - clear IO debug ack */
1966 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1967 ioa_cfg->regs.clr_interrupt_reg);
1968
1969 /* Write Mailbox with starting address */
1970 writel(start_addr, ioa_cfg->ioa_mailbox);
1971
1972 /* Signal address valid - clear IOA Reset alert */
1973 writel(IPR_UPROCI_RESET_ALERT,
1974 ioa_cfg->regs.clr_uproc_interrupt_reg);
1975
1976 for (i = 0; i < length_in_words; i++) {
1977 /* Wait for IO debug acknowledge */
1978 if (ipr_wait_iodbg_ack(ioa_cfg,
1979 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1980 dev_err(&ioa_cfg->pdev->dev,
1981 "IOA dump short data transfer timeout\n");
1982 return -EIO;
1983 }
1984
1985 /* Read data from mailbox and increment destination pointer */
1986 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1987 dest++;
1988
1989 /* For all but the last word of data, signal data received */
1990 if (i < (length_in_words - 1)) {
1991 /* Signal dump data received - Clear IO debug Ack */
1992 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1993 ioa_cfg->regs.clr_interrupt_reg);
1994 }
1995 }
1996
1997 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1998 writel(IPR_UPROCI_RESET_ALERT,
1999 ioa_cfg->regs.set_uproc_interrupt_reg);
2000
2001 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2002 ioa_cfg->regs.clr_uproc_interrupt_reg);
2003
2004 /* Signal dump data received - Clear IO debug Ack */
2005 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2006 ioa_cfg->regs.clr_interrupt_reg);
2007
2008 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2009 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2010 temp_pcii_reg =
2011 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
2012
2013 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2014 return 0;
2015
2016 udelay(10);
2017 delay += 10;
2018 }
2019
2020 return 0;
2021 }
2022
2023 #ifdef CONFIG_SCSI_IPR_DUMP
2024 /**
2025 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2026 * @ioa_cfg: ioa config struct
2027 * @pci_address: adapter address
2028 * @length: length of data to copy
2029 *
2030 * Copy data from PCI adapter to kernel buffer.
2031 * Note: length MUST be a 4 byte multiple
2032 * Return value:
2033 * 0 on success / other on failure
2034 **/
2035 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2036 unsigned long pci_address, u32 length)
2037 {
2038 int bytes_copied = 0;
2039 int cur_len, rc, rem_len, rem_page_len;
2040 __be32 *page;
2041 unsigned long lock_flags = 0;
2042 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2043
2044 while (bytes_copied < length &&
2045 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
2046 if (ioa_dump->page_offset >= PAGE_SIZE ||
2047 ioa_dump->page_offset == 0) {
2048 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2049
2050 if (!page) {
2051 ipr_trace;
2052 return bytes_copied;
2053 }
2054
2055 ioa_dump->page_offset = 0;
2056 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2057 ioa_dump->next_page_index++;
2058 } else
2059 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2060
2061 rem_len = length - bytes_copied;
2062 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2063 cur_len = min(rem_len, rem_page_len);
2064
2065 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2066 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2067 rc = -EIO;
2068 } else {
2069 rc = ipr_get_ldump_data_section(ioa_cfg,
2070 pci_address + bytes_copied,
2071 &page[ioa_dump->page_offset / 4],
2072 (cur_len / sizeof(u32)));
2073 }
2074 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2075
2076 if (!rc) {
2077 ioa_dump->page_offset += cur_len;
2078 bytes_copied += cur_len;
2079 } else {
2080 ipr_trace;
2081 break;
2082 }
2083 schedule();
2084 }
2085
2086 return bytes_copied;
2087 }
2088
2089 /**
2090 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2091 * @hdr: dump entry header struct
2092 *
2093 * Return value:
2094 * nothing
2095 **/
2096 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2097 {
2098 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2099 hdr->num_elems = 1;
2100 hdr->offset = sizeof(*hdr);
2101 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2102 }
2103
2104 /**
2105 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2106 * @ioa_cfg: ioa config struct
2107 * @driver_dump: driver dump struct
2108 *
2109 * Return value:
2110 * nothing
2111 **/
2112 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2113 struct ipr_driver_dump *driver_dump)
2114 {
2115 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2116
2117 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2118 driver_dump->ioa_type_entry.hdr.len =
2119 sizeof(struct ipr_dump_ioa_type_entry) -
2120 sizeof(struct ipr_dump_entry_header);
2121 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2122 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2123 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2124 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2125 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2126 ucode_vpd->minor_release[1];
2127 driver_dump->hdr.num_entries++;
2128 }
2129
2130 /**
2131 * ipr_dump_version_data - Fill in the driver version in the dump.
2132 * @ioa_cfg: ioa config struct
2133 * @driver_dump: driver dump struct
2134 *
2135 * Return value:
2136 * nothing
2137 **/
2138 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2139 struct ipr_driver_dump *driver_dump)
2140 {
2141 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2142 driver_dump->version_entry.hdr.len =
2143 sizeof(struct ipr_dump_version_entry) -
2144 sizeof(struct ipr_dump_entry_header);
2145 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2146 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2147 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2148 driver_dump->hdr.num_entries++;
2149 }
2150
2151 /**
2152 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2153 * @ioa_cfg: ioa config struct
2154 * @driver_dump: driver dump struct
2155 *
2156 * Return value:
2157 * nothing
2158 **/
2159 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2160 struct ipr_driver_dump *driver_dump)
2161 {
2162 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2163 driver_dump->trace_entry.hdr.len =
2164 sizeof(struct ipr_dump_trace_entry) -
2165 sizeof(struct ipr_dump_entry_header);
2166 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2167 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2168 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2169 driver_dump->hdr.num_entries++;
2170 }
2171
2172 /**
2173 * ipr_dump_location_data - Fill in the IOA location in the dump.
2174 * @ioa_cfg: ioa config struct
2175 * @driver_dump: driver dump struct
2176 *
2177 * Return value:
2178 * nothing
2179 **/
2180 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2181 struct ipr_driver_dump *driver_dump)
2182 {
2183 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2184 driver_dump->location_entry.hdr.len =
2185 sizeof(struct ipr_dump_location_entry) -
2186 sizeof(struct ipr_dump_entry_header);
2187 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2188 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2189 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2190 driver_dump->hdr.num_entries++;
2191 }
2192
2193 /**
2194 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2195 * @ioa_cfg: ioa config struct
2196 * @dump: dump struct
2197 *
2198 * Return value:
2199 * nothing
2200 **/
2201 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2202 {
2203 unsigned long start_addr, sdt_word;
2204 unsigned long lock_flags = 0;
2205 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2206 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2207 u32 num_entries, start_off, end_off;
2208 u32 bytes_to_copy, bytes_copied, rc;
2209 struct ipr_sdt *sdt;
2210 int i;
2211
2212 ENTER;
2213
2214 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2215
2216 if (ioa_cfg->sdt_state != GET_DUMP) {
2217 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2218 return;
2219 }
2220
2221 start_addr = readl(ioa_cfg->ioa_mailbox);
2222
2223 if (!ipr_sdt_is_fmt2(start_addr)) {
2224 dev_err(&ioa_cfg->pdev->dev,
2225 "Invalid dump table format: %lx\n", start_addr);
2226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2227 return;
2228 }
2229
2230 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2231
2232 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2233
2234 /* Initialize the overall dump header */
2235 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2236 driver_dump->hdr.num_entries = 1;
2237 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2238 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2239 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2240 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2241
2242 ipr_dump_version_data(ioa_cfg, driver_dump);
2243 ipr_dump_location_data(ioa_cfg, driver_dump);
2244 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2245 ipr_dump_trace_data(ioa_cfg, driver_dump);
2246
2247 /* Update dump_header */
2248 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2249
2250 /* IOA Dump entry */
2251 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2252 ioa_dump->format = IPR_SDT_FMT2;
2253 ioa_dump->hdr.len = 0;
2254 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2255 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2256
2257 /* First entries in sdt are actually a list of dump addresses and
2258 lengths to gather the real dump data. sdt represents the pointer
2259 to the ioa generated dump table. Dump data will be extracted based
2260 on entries in this table */
2261 sdt = &ioa_dump->sdt;
2262
2263 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2264 sizeof(struct ipr_sdt) / sizeof(__be32));
2265
2266 /* Smart Dump table is ready to use and the first entry is valid */
2267 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2268 dev_err(&ioa_cfg->pdev->dev,
2269 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2270 rc, be32_to_cpu(sdt->hdr.state));
2271 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2272 ioa_cfg->sdt_state = DUMP_OBTAINED;
2273 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2274 return;
2275 }
2276
2277 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2278
2279 if (num_entries > IPR_NUM_SDT_ENTRIES)
2280 num_entries = IPR_NUM_SDT_ENTRIES;
2281
2282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2283
2284 for (i = 0; i < num_entries; i++) {
2285 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2286 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2287 break;
2288 }
2289
2290 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2291 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2292 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2293 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2294
2295 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2296 bytes_to_copy = end_off - start_off;
2297 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2298 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2299 continue;
2300 }
2301
2302 /* Copy data from adapter to driver buffers */
2303 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2304 bytes_to_copy);
2305
2306 ioa_dump->hdr.len += bytes_copied;
2307
2308 if (bytes_copied != bytes_to_copy) {
2309 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2310 break;
2311 }
2312 }
2313 }
2314 }
2315
2316 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2317
2318 /* Update dump_header */
2319 driver_dump->hdr.len += ioa_dump->hdr.len;
2320 wmb();
2321 ioa_cfg->sdt_state = DUMP_OBTAINED;
2322 LEAVE;
2323 }
2324
2325 #else
2326 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2327 #endif
2328
2329 /**
2330 * ipr_release_dump - Free adapter dump memory
2331 * @kref: kref struct
2332 *
2333 * Return value:
2334 * nothing
2335 **/
2336 static void ipr_release_dump(struct kref *kref)
2337 {
2338 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2339 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2340 unsigned long lock_flags = 0;
2341 int i;
2342
2343 ENTER;
2344 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2345 ioa_cfg->dump = NULL;
2346 ioa_cfg->sdt_state = INACTIVE;
2347 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2348
2349 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2350 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2351
2352 kfree(dump);
2353 LEAVE;
2354 }
2355
2356 /**
2357 * ipr_worker_thread - Worker thread
2358 * @work: ioa config struct
2359 *
2360 * Called at task level from a work thread. This function takes care
2361 * of adding and removing device from the mid-layer as configuration
2362 * changes are detected by the adapter.
2363 *
2364 * Return value:
2365 * nothing
2366 **/
2367 static void ipr_worker_thread(struct work_struct *work)
2368 {
2369 unsigned long lock_flags;
2370 struct ipr_resource_entry *res;
2371 struct scsi_device *sdev;
2372 struct ipr_dump *dump;
2373 struct ipr_ioa_cfg *ioa_cfg =
2374 container_of(work, struct ipr_ioa_cfg, work_q);
2375 u8 bus, target, lun;
2376 int did_work;
2377
2378 ENTER;
2379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2380
2381 if (ioa_cfg->sdt_state == GET_DUMP) {
2382 dump = ioa_cfg->dump;
2383 if (!dump) {
2384 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2385 return;
2386 }
2387 kref_get(&dump->kref);
2388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2389 ipr_get_ioa_dump(ioa_cfg, dump);
2390 kref_put(&dump->kref, ipr_release_dump);
2391
2392 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2393 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2394 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2395 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2396 return;
2397 }
2398
2399 restart:
2400 do {
2401 did_work = 0;
2402 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2403 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2404 return;
2405 }
2406
2407 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2408 if (res->del_from_ml && res->sdev) {
2409 did_work = 1;
2410 sdev = res->sdev;
2411 if (!scsi_device_get(sdev)) {
2412 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2413 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2414 scsi_remove_device(sdev);
2415 scsi_device_put(sdev);
2416 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2417 }
2418 break;
2419 }
2420 }
2421 } while(did_work);
2422
2423 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2424 if (res->add_to_ml) {
2425 bus = res->cfgte.res_addr.bus;
2426 target = res->cfgte.res_addr.target;
2427 lun = res->cfgte.res_addr.lun;
2428 res->add_to_ml = 0;
2429 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2430 scsi_add_device(ioa_cfg->host, bus, target, lun);
2431 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2432 goto restart;
2433 }
2434 }
2435
2436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2437 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
2438 LEAVE;
2439 }
2440
2441 #ifdef CONFIG_SCSI_IPR_TRACE
2442 /**
2443 * ipr_read_trace - Dump the adapter trace
2444 * @kobj: kobject struct
2445 * @bin_attr: bin_attribute struct
2446 * @buf: buffer
2447 * @off: offset
2448 * @count: buffer size
2449 *
2450 * Return value:
2451 * number of bytes printed to buffer
2452 **/
2453 static ssize_t ipr_read_trace(struct kobject *kobj,
2454 struct bin_attribute *bin_attr,
2455 char *buf, loff_t off, size_t count)
2456 {
2457 struct device *dev = container_of(kobj, struct device, kobj);
2458 struct Scsi_Host *shost = class_to_shost(dev);
2459 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2460 unsigned long lock_flags = 0;
2461 ssize_t ret;
2462
2463 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2464 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
2465 IPR_TRACE_SIZE);
2466 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2467
2468 return ret;
2469 }
2470
2471 static struct bin_attribute ipr_trace_attr = {
2472 .attr = {
2473 .name = "trace",
2474 .mode = S_IRUGO,
2475 },
2476 .size = 0,
2477 .read = ipr_read_trace,
2478 };
2479 #endif
2480
2481 static const struct {
2482 enum ipr_cache_state state;
2483 char *name;
2484 } cache_state [] = {
2485 { CACHE_NONE, "none" },
2486 { CACHE_DISABLED, "disabled" },
2487 { CACHE_ENABLED, "enabled" }
2488 };
2489
2490 /**
2491 * ipr_show_write_caching - Show the write caching attribute
2492 * @dev: device struct
2493 * @buf: buffer
2494 *
2495 * Return value:
2496 * number of bytes printed to buffer
2497 **/
2498 static ssize_t ipr_show_write_caching(struct device *dev,
2499 struct device_attribute *attr, char *buf)
2500 {
2501 struct Scsi_Host *shost = class_to_shost(dev);
2502 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2503 unsigned long lock_flags = 0;
2504 int i, len = 0;
2505
2506 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2507 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2508 if (cache_state[i].state == ioa_cfg->cache_state) {
2509 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2510 break;
2511 }
2512 }
2513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2514 return len;
2515 }
2516
2517
2518 /**
2519 * ipr_store_write_caching - Enable/disable adapter write cache
2520 * @dev: device struct
2521 * @buf: buffer
2522 * @count: buffer size
2523 *
2524 * This function will enable/disable adapter write cache.
2525 *
2526 * Return value:
2527 * count on success / other on failure
2528 **/
2529 static ssize_t ipr_store_write_caching(struct device *dev,
2530 struct device_attribute *attr,
2531 const char *buf, size_t count)
2532 {
2533 struct Scsi_Host *shost = class_to_shost(dev);
2534 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2535 unsigned long lock_flags = 0;
2536 enum ipr_cache_state new_state = CACHE_INVALID;
2537 int i;
2538
2539 if (!capable(CAP_SYS_ADMIN))
2540 return -EACCES;
2541 if (ioa_cfg->cache_state == CACHE_NONE)
2542 return -EINVAL;
2543
2544 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2545 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2546 new_state = cache_state[i].state;
2547 break;
2548 }
2549 }
2550
2551 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2552 return -EINVAL;
2553
2554 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2555 if (ioa_cfg->cache_state == new_state) {
2556 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2557 return count;
2558 }
2559
2560 ioa_cfg->cache_state = new_state;
2561 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2562 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2563 if (!ioa_cfg->in_reset_reload)
2564 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2566 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2567
2568 return count;
2569 }
2570
2571 static struct device_attribute ipr_ioa_cache_attr = {
2572 .attr = {
2573 .name = "write_cache",
2574 .mode = S_IRUGO | S_IWUSR,
2575 },
2576 .show = ipr_show_write_caching,
2577 .store = ipr_store_write_caching
2578 };
2579
2580 /**
2581 * ipr_show_fw_version - Show the firmware version
2582 * @dev: class device struct
2583 * @buf: buffer
2584 *
2585 * Return value:
2586 * number of bytes printed to buffer
2587 **/
2588 static ssize_t ipr_show_fw_version(struct device *dev,
2589 struct device_attribute *attr, char *buf)
2590 {
2591 struct Scsi_Host *shost = class_to_shost(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 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 * @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 device *dev,
2623 struct device_attribute *attr, char *buf)
2624 {
2625 struct Scsi_Host *shost = class_to_shost(dev);
2626 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2627 unsigned long lock_flags = 0;
2628 int len;
2629
2630 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2631 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2632 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2633 return len;
2634 }
2635
2636 /**
2637 * ipr_store_log_level - Change the adapter's error logging level
2638 * @dev: class device struct
2639 * @buf: buffer
2640 *
2641 * Return value:
2642 * number of bytes printed to buffer
2643 **/
2644 static ssize_t ipr_store_log_level(struct device *dev,
2645 struct device_attribute *attr,
2646 const char *buf, size_t count)
2647 {
2648 struct Scsi_Host *shost = class_to_shost(dev);
2649 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2650 unsigned long lock_flags = 0;
2651
2652 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2653 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2655 return strlen(buf);
2656 }
2657
2658 static struct device_attribute ipr_log_level_attr = {
2659 .attr = {
2660 .name = "log_level",
2661 .mode = S_IRUGO | S_IWUSR,
2662 },
2663 .show = ipr_show_log_level,
2664 .store = ipr_store_log_level
2665 };
2666
2667 /**
2668 * ipr_store_diagnostics - IOA Diagnostics interface
2669 * @dev: device struct
2670 * @buf: buffer
2671 * @count: buffer size
2672 *
2673 * This function will reset the adapter and wait a reasonable
2674 * amount of time for any errors that the adapter might log.
2675 *
2676 * Return value:
2677 * count on success / other on failure
2678 **/
2679 static ssize_t ipr_store_diagnostics(struct device *dev,
2680 struct device_attribute *attr,
2681 const char *buf, size_t count)
2682 {
2683 struct Scsi_Host *shost = class_to_shost(dev);
2684 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2685 unsigned long lock_flags = 0;
2686 int rc = count;
2687
2688 if (!capable(CAP_SYS_ADMIN))
2689 return -EACCES;
2690
2691 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2692 while(ioa_cfg->in_reset_reload) {
2693 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2694 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2695 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2696 }
2697
2698 ioa_cfg->errors_logged = 0;
2699 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2700
2701 if (ioa_cfg->in_reset_reload) {
2702 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2703 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2704
2705 /* Wait for a second for any errors to be logged */
2706 msleep(1000);
2707 } else {
2708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2709 return -EIO;
2710 }
2711
2712 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2713 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2714 rc = -EIO;
2715 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2716
2717 return rc;
2718 }
2719
2720 static struct device_attribute ipr_diagnostics_attr = {
2721 .attr = {
2722 .name = "run_diagnostics",
2723 .mode = S_IWUSR,
2724 },
2725 .store = ipr_store_diagnostics
2726 };
2727
2728 /**
2729 * ipr_show_adapter_state - Show the adapter's state
2730 * @class_dev: device struct
2731 * @buf: buffer
2732 *
2733 * Return value:
2734 * number of bytes printed to buffer
2735 **/
2736 static ssize_t ipr_show_adapter_state(struct device *dev,
2737 struct device_attribute *attr, char *buf)
2738 {
2739 struct Scsi_Host *shost = class_to_shost(dev);
2740 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2741 unsigned long lock_flags = 0;
2742 int len;
2743
2744 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2745 if (ioa_cfg->ioa_is_dead)
2746 len = snprintf(buf, PAGE_SIZE, "offline\n");
2747 else
2748 len = snprintf(buf, PAGE_SIZE, "online\n");
2749 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2750 return len;
2751 }
2752
2753 /**
2754 * ipr_store_adapter_state - Change adapter state
2755 * @dev: device struct
2756 * @buf: buffer
2757 * @count: buffer size
2758 *
2759 * This function will change the adapter's state.
2760 *
2761 * Return value:
2762 * count on success / other on failure
2763 **/
2764 static ssize_t ipr_store_adapter_state(struct device *dev,
2765 struct device_attribute *attr,
2766 const char *buf, size_t count)
2767 {
2768 struct Scsi_Host *shost = class_to_shost(dev);
2769 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2770 unsigned long lock_flags;
2771 int result = count;
2772
2773 if (!capable(CAP_SYS_ADMIN))
2774 return -EACCES;
2775
2776 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2777 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2778 ioa_cfg->ioa_is_dead = 0;
2779 ioa_cfg->reset_retries = 0;
2780 ioa_cfg->in_ioa_bringdown = 0;
2781 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2782 }
2783 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2784 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2785
2786 return result;
2787 }
2788
2789 static struct device_attribute ipr_ioa_state_attr = {
2790 .attr = {
2791 .name = "online_state",
2792 .mode = S_IRUGO | S_IWUSR,
2793 },
2794 .show = ipr_show_adapter_state,
2795 .store = ipr_store_adapter_state
2796 };
2797
2798 /**
2799 * ipr_store_reset_adapter - Reset the adapter
2800 * @dev: device struct
2801 * @buf: buffer
2802 * @count: buffer size
2803 *
2804 * This function will reset the adapter.
2805 *
2806 * Return value:
2807 * count on success / other on failure
2808 **/
2809 static ssize_t ipr_store_reset_adapter(struct device *dev,
2810 struct device_attribute *attr,
2811 const char *buf, size_t count)
2812 {
2813 struct Scsi_Host *shost = class_to_shost(dev);
2814 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2815 unsigned long lock_flags;
2816 int result = count;
2817
2818 if (!capable(CAP_SYS_ADMIN))
2819 return -EACCES;
2820
2821 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2822 if (!ioa_cfg->in_reset_reload)
2823 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2824 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2825 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2826
2827 return result;
2828 }
2829
2830 static struct device_attribute ipr_ioa_reset_attr = {
2831 .attr = {
2832 .name = "reset_host",
2833 .mode = S_IWUSR,
2834 },
2835 .store = ipr_store_reset_adapter
2836 };
2837
2838 /**
2839 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2840 * @buf_len: buffer length
2841 *
2842 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2843 * list to use for microcode download
2844 *
2845 * Return value:
2846 * pointer to sglist / NULL on failure
2847 **/
2848 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2849 {
2850 int sg_size, order, bsize_elem, num_elem, i, j;
2851 struct ipr_sglist *sglist;
2852 struct scatterlist *scatterlist;
2853 struct page *page;
2854
2855 /* Get the minimum size per scatter/gather element */
2856 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2857
2858 /* Get the actual size per element */
2859 order = get_order(sg_size);
2860
2861 /* Determine the actual number of bytes per element */
2862 bsize_elem = PAGE_SIZE * (1 << order);
2863
2864 /* Determine the actual number of sg entries needed */
2865 if (buf_len % bsize_elem)
2866 num_elem = (buf_len / bsize_elem) + 1;
2867 else
2868 num_elem = buf_len / bsize_elem;
2869
2870 /* Allocate a scatter/gather list for the DMA */
2871 sglist = kzalloc(sizeof(struct ipr_sglist) +
2872 (sizeof(struct scatterlist) * (num_elem - 1)),
2873 GFP_KERNEL);
2874
2875 if (sglist == NULL) {
2876 ipr_trace;
2877 return NULL;
2878 }
2879
2880 scatterlist = sglist->scatterlist;
2881 sg_init_table(scatterlist, num_elem);
2882
2883 sglist->order = order;
2884 sglist->num_sg = num_elem;
2885
2886 /* Allocate a bunch of sg elements */
2887 for (i = 0; i < num_elem; i++) {
2888 page = alloc_pages(GFP_KERNEL, order);
2889 if (!page) {
2890 ipr_trace;
2891
2892 /* Free up what we already allocated */
2893 for (j = i - 1; j >= 0; j--)
2894 __free_pages(sg_page(&scatterlist[j]), order);
2895 kfree(sglist);
2896 return NULL;
2897 }
2898
2899 sg_set_page(&scatterlist[i], page, 0, 0);
2900 }
2901
2902 return sglist;
2903 }
2904
2905 /**
2906 * ipr_free_ucode_buffer - Frees a microcode download buffer
2907 * @p_dnld: scatter/gather list pointer
2908 *
2909 * Free a DMA'able ucode download buffer previously allocated with
2910 * ipr_alloc_ucode_buffer
2911 *
2912 * Return value:
2913 * nothing
2914 **/
2915 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2916 {
2917 int i;
2918
2919 for (i = 0; i < sglist->num_sg; i++)
2920 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
2921
2922 kfree(sglist);
2923 }
2924
2925 /**
2926 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2927 * @sglist: scatter/gather list pointer
2928 * @buffer: buffer pointer
2929 * @len: buffer length
2930 *
2931 * Copy a microcode image from a user buffer into a buffer allocated by
2932 * ipr_alloc_ucode_buffer
2933 *
2934 * Return value:
2935 * 0 on success / other on failure
2936 **/
2937 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2938 u8 *buffer, u32 len)
2939 {
2940 int bsize_elem, i, result = 0;
2941 struct scatterlist *scatterlist;
2942 void *kaddr;
2943
2944 /* Determine the actual number of bytes per element */
2945 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2946
2947 scatterlist = sglist->scatterlist;
2948
2949 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2950 struct page *page = sg_page(&scatterlist[i]);
2951
2952 kaddr = kmap(page);
2953 memcpy(kaddr, buffer, bsize_elem);
2954 kunmap(page);
2955
2956 scatterlist[i].length = bsize_elem;
2957
2958 if (result != 0) {
2959 ipr_trace;
2960 return result;
2961 }
2962 }
2963
2964 if (len % bsize_elem) {
2965 struct page *page = sg_page(&scatterlist[i]);
2966
2967 kaddr = kmap(page);
2968 memcpy(kaddr, buffer, len % bsize_elem);
2969 kunmap(page);
2970
2971 scatterlist[i].length = len % bsize_elem;
2972 }
2973
2974 sglist->buffer_len = len;
2975 return result;
2976 }
2977
2978 /**
2979 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2980 * @ipr_cmd: ipr command struct
2981 * @sglist: scatter/gather list
2982 *
2983 * Builds a microcode download IOA data list (IOADL).
2984 *
2985 **/
2986 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2987 struct ipr_sglist *sglist)
2988 {
2989 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2990 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2991 struct scatterlist *scatterlist = sglist->scatterlist;
2992 int i;
2993
2994 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2995 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2996 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2997 ioarcb->write_ioadl_len =
2998 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2999
3000 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3001 ioadl[i].flags_and_data_len =
3002 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3003 ioadl[i].address =
3004 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3005 }
3006
3007 ioadl[i-1].flags_and_data_len |=
3008 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3009 }
3010
3011 /**
3012 * ipr_update_ioa_ucode - Update IOA's microcode
3013 * @ioa_cfg: ioa config struct
3014 * @sglist: scatter/gather list
3015 *
3016 * Initiate an adapter reset to update the IOA's microcode
3017 *
3018 * Return value:
3019 * 0 on success / -EIO on failure
3020 **/
3021 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3022 struct ipr_sglist *sglist)
3023 {
3024 unsigned long lock_flags;
3025
3026 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3027 while(ioa_cfg->in_reset_reload) {
3028 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3029 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3030 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3031 }
3032
3033 if (ioa_cfg->ucode_sglist) {
3034 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3035 dev_err(&ioa_cfg->pdev->dev,
3036 "Microcode download already in progress\n");
3037 return -EIO;
3038 }
3039
3040 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3041 sglist->num_sg, DMA_TO_DEVICE);
3042
3043 if (!sglist->num_dma_sg) {
3044 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3045 dev_err(&ioa_cfg->pdev->dev,
3046 "Failed to map microcode download buffer!\n");
3047 return -EIO;
3048 }
3049
3050 ioa_cfg->ucode_sglist = sglist;
3051 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3052 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3053 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3054
3055 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3056 ioa_cfg->ucode_sglist = NULL;
3057 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3058 return 0;
3059 }
3060
3061 /**
3062 * ipr_store_update_fw - Update the firmware on the adapter
3063 * @class_dev: device struct
3064 * @buf: buffer
3065 * @count: buffer size
3066 *
3067 * This function will update the firmware on the adapter.
3068 *
3069 * Return value:
3070 * count on success / other on failure
3071 **/
3072 static ssize_t ipr_store_update_fw(struct device *dev,
3073 struct device_attribute *attr,
3074 const char *buf, size_t count)
3075 {
3076 struct Scsi_Host *shost = class_to_shost(dev);
3077 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3078 struct ipr_ucode_image_header *image_hdr;
3079 const struct firmware *fw_entry;
3080 struct ipr_sglist *sglist;
3081 char fname[100];
3082 char *src;
3083 int len, result, dnld_size;
3084
3085 if (!capable(CAP_SYS_ADMIN))
3086 return -EACCES;
3087
3088 len = snprintf(fname, 99, "%s", buf);
3089 fname[len-1] = '\0';
3090
3091 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3092 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3093 return -EIO;
3094 }
3095
3096 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3097
3098 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3099 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3100 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3101 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3102 release_firmware(fw_entry);
3103 return -EINVAL;
3104 }
3105
3106 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3107 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3108 sglist = ipr_alloc_ucode_buffer(dnld_size);
3109
3110 if (!sglist) {
3111 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3112 release_firmware(fw_entry);
3113 return -ENOMEM;
3114 }
3115
3116 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3117
3118 if (result) {
3119 dev_err(&ioa_cfg->pdev->dev,
3120 "Microcode buffer copy to DMA buffer failed\n");
3121 goto out;
3122 }
3123
3124 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3125
3126 if (!result)
3127 result = count;
3128 out:
3129 ipr_free_ucode_buffer(sglist);
3130 release_firmware(fw_entry);
3131 return result;
3132 }
3133
3134 static struct device_attribute ipr_update_fw_attr = {
3135 .attr = {
3136 .name = "update_fw",
3137 .mode = S_IWUSR,
3138 },
3139 .store = ipr_store_update_fw
3140 };
3141
3142 static struct device_attribute *ipr_ioa_attrs[] = {
3143 &ipr_fw_version_attr,
3144 &ipr_log_level_attr,
3145 &ipr_diagnostics_attr,
3146 &ipr_ioa_state_attr,
3147 &ipr_ioa_reset_attr,
3148 &ipr_update_fw_attr,
3149 &ipr_ioa_cache_attr,
3150 NULL,
3151 };
3152
3153 #ifdef CONFIG_SCSI_IPR_DUMP
3154 /**
3155 * ipr_read_dump - Dump the adapter
3156 * @kobj: kobject struct
3157 * @bin_attr: bin_attribute struct
3158 * @buf: buffer
3159 * @off: offset
3160 * @count: buffer size
3161 *
3162 * Return value:
3163 * number of bytes printed to buffer
3164 **/
3165 static ssize_t ipr_read_dump(struct kobject *kobj,
3166 struct bin_attribute *bin_attr,
3167 char *buf, loff_t off, size_t count)
3168 {
3169 struct device *cdev = container_of(kobj, struct device, kobj);
3170 struct Scsi_Host *shost = class_to_shost(cdev);
3171 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3172 struct ipr_dump *dump;
3173 unsigned long lock_flags = 0;
3174 char *src;
3175 int len;
3176 size_t rc = count;
3177
3178 if (!capable(CAP_SYS_ADMIN))
3179 return -EACCES;
3180
3181 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3182 dump = ioa_cfg->dump;
3183
3184 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3186 return 0;
3187 }
3188 kref_get(&dump->kref);
3189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3190
3191 if (off > dump->driver_dump.hdr.len) {
3192 kref_put(&dump->kref, ipr_release_dump);
3193 return 0;
3194 }
3195
3196 if (off + count > dump->driver_dump.hdr.len) {
3197 count = dump->driver_dump.hdr.len - off;
3198 rc = count;
3199 }
3200
3201 if (count && off < sizeof(dump->driver_dump)) {
3202 if (off + count > sizeof(dump->driver_dump))
3203 len = sizeof(dump->driver_dump) - off;
3204 else
3205 len = count;
3206 src = (u8 *)&dump->driver_dump + off;
3207 memcpy(buf, src, len);
3208 buf += len;
3209 off += len;
3210 count -= len;
3211 }
3212
3213 off -= sizeof(dump->driver_dump);
3214
3215 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3216 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3217 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3218 else
3219 len = count;
3220 src = (u8 *)&dump->ioa_dump + off;
3221 memcpy(buf, src, len);
3222 buf += len;
3223 off += len;
3224 count -= len;
3225 }
3226
3227 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3228
3229 while (count) {
3230 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3231 len = PAGE_ALIGN(off) - off;
3232 else
3233 len = count;
3234 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3235 src += off & ~PAGE_MASK;
3236 memcpy(buf, src, len);
3237 buf += len;
3238 off += len;
3239 count -= len;
3240 }
3241
3242 kref_put(&dump->kref, ipr_release_dump);
3243 return rc;
3244 }
3245
3246 /**
3247 * ipr_alloc_dump - Prepare for adapter dump
3248 * @ioa_cfg: ioa config struct
3249 *
3250 * Return value:
3251 * 0 on success / other on failure
3252 **/
3253 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3254 {
3255 struct ipr_dump *dump;
3256 unsigned long lock_flags = 0;
3257
3258 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3259
3260 if (!dump) {
3261 ipr_err("Dump memory allocation failed\n");
3262 return -ENOMEM;
3263 }
3264
3265 kref_init(&dump->kref);
3266 dump->ioa_cfg = ioa_cfg;
3267
3268 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3269
3270 if (INACTIVE != ioa_cfg->sdt_state) {
3271 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3272 kfree(dump);
3273 return 0;
3274 }
3275
3276 ioa_cfg->dump = dump;
3277 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3278 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3279 ioa_cfg->dump_taken = 1;
3280 schedule_work(&ioa_cfg->work_q);
3281 }
3282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3283
3284 return 0;
3285 }
3286
3287 /**
3288 * ipr_free_dump - Free adapter dump memory
3289 * @ioa_cfg: ioa config struct
3290 *
3291 * Return value:
3292 * 0 on success / other on failure
3293 **/
3294 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3295 {
3296 struct ipr_dump *dump;
3297 unsigned long lock_flags = 0;
3298
3299 ENTER;
3300
3301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3302 dump = ioa_cfg->dump;
3303 if (!dump) {
3304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3305 return 0;
3306 }
3307
3308 ioa_cfg->dump = NULL;
3309 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3310
3311 kref_put(&dump->kref, ipr_release_dump);
3312
3313 LEAVE;
3314 return 0;
3315 }
3316
3317 /**
3318 * ipr_write_dump - Setup dump state of adapter
3319 * @kobj: kobject struct
3320 * @bin_attr: bin_attribute struct
3321 * @buf: buffer
3322 * @off: offset
3323 * @count: buffer size
3324 *
3325 * Return value:
3326 * number of bytes printed to buffer
3327 **/
3328 static ssize_t ipr_write_dump(struct kobject *kobj,
3329 struct bin_attribute *bin_attr,
3330 char *buf, loff_t off, size_t count)
3331 {
3332 struct device *cdev = container_of(kobj, struct device, kobj);
3333 struct Scsi_Host *shost = class_to_shost(cdev);
3334 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3335 int rc;
3336
3337 if (!capable(CAP_SYS_ADMIN))
3338 return -EACCES;
3339
3340 if (buf[0] == '1')
3341 rc = ipr_alloc_dump(ioa_cfg);
3342 else if (buf[0] == '0')
3343 rc = ipr_free_dump(ioa_cfg);
3344 else
3345 return -EINVAL;
3346
3347 if (rc)
3348 return rc;
3349 else
3350 return count;
3351 }
3352
3353 static struct bin_attribute ipr_dump_attr = {
3354 .attr = {
3355 .name = "dump",
3356 .mode = S_IRUSR | S_IWUSR,
3357 },
3358 .size = 0,
3359 .read = ipr_read_dump,
3360 .write = ipr_write_dump
3361 };
3362 #else
3363 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3364 #endif
3365
3366 /**
3367 * ipr_change_queue_depth - Change the device's queue depth
3368 * @sdev: scsi device struct
3369 * @qdepth: depth to set
3370 *
3371 * Return value:
3372 * actual depth set
3373 **/
3374 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3375 {
3376 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3377 struct ipr_resource_entry *res;
3378 unsigned long lock_flags = 0;
3379
3380 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3381 res = (struct ipr_resource_entry *)sdev->hostdata;
3382
3383 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3384 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3386
3387 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3388 return sdev->queue_depth;
3389 }
3390
3391 /**
3392 * ipr_change_queue_type - Change the device's queue type
3393 * @dsev: scsi device struct
3394 * @tag_type: type of tags to use
3395 *
3396 * Return value:
3397 * actual queue type set
3398 **/
3399 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3400 {
3401 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3402 struct ipr_resource_entry *res;
3403 unsigned long lock_flags = 0;
3404
3405 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3406 res = (struct ipr_resource_entry *)sdev->hostdata;
3407
3408 if (res) {
3409 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3410 /*
3411 * We don't bother quiescing the device here since the
3412 * adapter firmware does it for us.
3413 */
3414 scsi_set_tag_type(sdev, tag_type);
3415
3416 if (tag_type)
3417 scsi_activate_tcq(sdev, sdev->queue_depth);
3418 else
3419 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3420 } else
3421 tag_type = 0;
3422 } else
3423 tag_type = 0;
3424
3425 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3426 return tag_type;
3427 }
3428
3429 /**
3430 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3431 * @dev: device struct
3432 * @buf: buffer
3433 *
3434 * Return value:
3435 * number of bytes printed to buffer
3436 **/
3437 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3438 {
3439 struct scsi_device *sdev = to_scsi_device(dev);
3440 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3441 struct ipr_resource_entry *res;
3442 unsigned long lock_flags = 0;
3443 ssize_t len = -ENXIO;
3444
3445 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3446 res = (struct ipr_resource_entry *)sdev->hostdata;
3447 if (res)
3448 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3449 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3450 return len;
3451 }
3452
3453 static struct device_attribute ipr_adapter_handle_attr = {
3454 .attr = {
3455 .name = "adapter_handle",
3456 .mode = S_IRUSR,
3457 },
3458 .show = ipr_show_adapter_handle
3459 };
3460
3461 static struct device_attribute *ipr_dev_attrs[] = {
3462 &ipr_adapter_handle_attr,
3463 NULL,
3464 };
3465
3466 /**
3467 * ipr_biosparam - Return the HSC mapping
3468 * @sdev: scsi device struct
3469 * @block_device: block device pointer
3470 * @capacity: capacity of the device
3471 * @parm: Array containing returned HSC values.
3472 *
3473 * This function generates the HSC parms that fdisk uses.
3474 * We want to make sure we return something that places partitions
3475 * on 4k boundaries for best performance with the IOA.
3476 *
3477 * Return value:
3478 * 0 on success
3479 **/
3480 static int ipr_biosparam(struct scsi_device *sdev,
3481 struct block_device *block_device,
3482 sector_t capacity, int *parm)
3483 {
3484 int heads, sectors;
3485 sector_t cylinders;
3486
3487 heads = 128;
3488 sectors = 32;
3489
3490 cylinders = capacity;
3491 sector_div(cylinders, (128 * 32));
3492
3493 /* return result */
3494 parm[0] = heads;
3495 parm[1] = sectors;
3496 parm[2] = cylinders;
3497
3498 return 0;
3499 }
3500
3501 /**
3502 * ipr_find_starget - Find target based on bus/target.
3503 * @starget: scsi target struct
3504 *
3505 * Return value:
3506 * resource entry pointer if found / NULL if not found
3507 **/
3508 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3509 {
3510 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3511 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3512 struct ipr_resource_entry *res;
3513
3514 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3515 if ((res->cfgte.res_addr.bus == starget->channel) &&
3516 (res->cfgte.res_addr.target == starget->id) &&
3517 (res->cfgte.res_addr.lun == 0)) {
3518 return res;
3519 }
3520 }
3521
3522 return NULL;
3523 }
3524
3525 static struct ata_port_info sata_port_info;
3526
3527 /**
3528 * ipr_target_alloc - Prepare for commands to a SCSI target
3529 * @starget: scsi target struct
3530 *
3531 * If the device is a SATA device, this function allocates an
3532 * ATA port with libata, else it does nothing.
3533 *
3534 * Return value:
3535 * 0 on success / non-0 on failure
3536 **/
3537 static int ipr_target_alloc(struct scsi_target *starget)
3538 {
3539 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3540 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3541 struct ipr_sata_port *sata_port;
3542 struct ata_port *ap;
3543 struct ipr_resource_entry *res;
3544 unsigned long lock_flags;
3545
3546 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3547 res = ipr_find_starget(starget);
3548 starget->hostdata = NULL;
3549
3550 if (res && ipr_is_gata(res)) {
3551 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3552 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3553 if (!sata_port)
3554 return -ENOMEM;
3555
3556 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3557 if (ap) {
3558 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3559 sata_port->ioa_cfg = ioa_cfg;
3560 sata_port->ap = ap;
3561 sata_port->res = res;
3562
3563 res->sata_port = sata_port;
3564 ap->private_data = sata_port;
3565 starget->hostdata = sata_port;
3566 } else {
3567 kfree(sata_port);
3568 return -ENOMEM;
3569 }
3570 }
3571 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3572
3573 return 0;
3574 }
3575
3576 /**
3577 * ipr_target_destroy - Destroy a SCSI target
3578 * @starget: scsi target struct
3579 *
3580 * If the device was a SATA device, this function frees the libata
3581 * ATA port, else it does nothing.
3582 *
3583 **/
3584 static void ipr_target_destroy(struct scsi_target *starget)
3585 {
3586 struct ipr_sata_port *sata_port = starget->hostdata;
3587
3588 if (sata_port) {
3589 starget->hostdata = NULL;
3590 ata_sas_port_destroy(sata_port->ap);
3591 kfree(sata_port);
3592 }
3593 }
3594
3595 /**
3596 * ipr_find_sdev - Find device based on bus/target/lun.
3597 * @sdev: scsi device struct
3598 *
3599 * Return value:
3600 * resource entry pointer if found / NULL if not found
3601 **/
3602 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3603 {
3604 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3605 struct ipr_resource_entry *res;
3606
3607 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3608 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3609 (res->cfgte.res_addr.target == sdev->id) &&
3610 (res->cfgte.res_addr.lun == sdev->lun))
3611 return res;
3612 }
3613
3614 return NULL;
3615 }
3616
3617 /**
3618 * ipr_slave_destroy - Unconfigure a SCSI device
3619 * @sdev: scsi device struct
3620 *
3621 * Return value:
3622 * nothing
3623 **/
3624 static void ipr_slave_destroy(struct scsi_device *sdev)
3625 {
3626 struct ipr_resource_entry *res;
3627 struct ipr_ioa_cfg *ioa_cfg;
3628 unsigned long lock_flags = 0;
3629
3630 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3631
3632 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3633 res = (struct ipr_resource_entry *) sdev->hostdata;
3634 if (res) {
3635 if (res->sata_port)
3636 ata_port_disable(res->sata_port->ap);
3637 sdev->hostdata = NULL;
3638 res->sdev = NULL;
3639 res->sata_port = NULL;
3640 }
3641 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3642 }
3643
3644 /**
3645 * ipr_slave_configure - Configure a SCSI device
3646 * @sdev: scsi device struct
3647 *
3648 * This function configures the specified scsi device.
3649 *
3650 * Return value:
3651 * 0 on success
3652 **/
3653 static int ipr_slave_configure(struct scsi_device *sdev)
3654 {
3655 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3656 struct ipr_resource_entry *res;
3657 struct ata_port *ap = NULL;
3658 unsigned long lock_flags = 0;
3659
3660 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3661 res = sdev->hostdata;
3662 if (res) {
3663 if (ipr_is_af_dasd_device(res))
3664 sdev->type = TYPE_RAID;
3665 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3666 sdev->scsi_level = 4;
3667 sdev->no_uld_attach = 1;
3668 }
3669 if (ipr_is_vset_device(res)) {
3670 blk_queue_rq_timeout(sdev->request_queue,
3671 IPR_VSET_RW_TIMEOUT);
3672 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3673 }
3674 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3675 sdev->allow_restart = 1;
3676 if (ipr_is_gata(res) && res->sata_port)
3677 ap = res->sata_port->ap;
3678 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3679
3680 if (ap) {
3681 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3682 ata_sas_slave_configure(sdev, ap);
3683 } else
3684 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3685 return 0;
3686 }
3687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3688 return 0;
3689 }
3690
3691 /**
3692 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3693 * @sdev: scsi device struct
3694 *
3695 * This function initializes an ATA port so that future commands
3696 * sent through queuecommand will work.
3697 *
3698 * Return value:
3699 * 0 on success
3700 **/
3701 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3702 {
3703 struct ipr_sata_port *sata_port = NULL;
3704 int rc = -ENXIO;
3705
3706 ENTER;
3707 if (sdev->sdev_target)
3708 sata_port = sdev->sdev_target->hostdata;
3709 if (sata_port)
3710 rc = ata_sas_port_init(sata_port->ap);
3711 if (rc)
3712 ipr_slave_destroy(sdev);
3713
3714 LEAVE;
3715 return rc;
3716 }
3717
3718 /**
3719 * ipr_slave_alloc - Prepare for commands to a device.
3720 * @sdev: scsi device struct
3721 *
3722 * This function saves a pointer to the resource entry
3723 * in the scsi device struct if the device exists. We
3724 * can then use this pointer in ipr_queuecommand when
3725 * handling new commands.
3726 *
3727 * Return value:
3728 * 0 on success / -ENXIO if device does not exist
3729 **/
3730 static int ipr_slave_alloc(struct scsi_device *sdev)
3731 {
3732 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3733 struct ipr_resource_entry *res;
3734 unsigned long lock_flags;
3735 int rc = -ENXIO;
3736
3737 sdev->hostdata = NULL;
3738
3739 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3740
3741 res = ipr_find_sdev(sdev);
3742 if (res) {
3743 res->sdev = sdev;
3744 res->add_to_ml = 0;
3745 res->in_erp = 0;
3746 sdev->hostdata = res;
3747 if (!ipr_is_naca_model(res))
3748 res->needs_sync_complete = 1;
3749 rc = 0;
3750 if (ipr_is_gata(res)) {
3751 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3752 return ipr_ata_slave_alloc(sdev);
3753 }
3754 }
3755
3756 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3757
3758 return rc;
3759 }
3760
3761 /**
3762 * ipr_eh_host_reset - Reset the host adapter
3763 * @scsi_cmd: scsi command struct
3764 *
3765 * Return value:
3766 * SUCCESS / FAILED
3767 **/
3768 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3769 {
3770 struct ipr_ioa_cfg *ioa_cfg;
3771 int rc;
3772
3773 ENTER;
3774 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3775
3776 dev_err(&ioa_cfg->pdev->dev,
3777 "Adapter being reset as a result of error recovery.\n");
3778
3779 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3780 ioa_cfg->sdt_state = GET_DUMP;
3781
3782 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3783
3784 LEAVE;
3785 return rc;
3786 }
3787
3788 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3789 {
3790 int rc;
3791
3792 spin_lock_irq(cmd->device->host->host_lock);
3793 rc = __ipr_eh_host_reset(cmd);
3794 spin_unlock_irq(cmd->device->host->host_lock);
3795
3796 return rc;
3797 }
3798
3799 /**
3800 * ipr_device_reset - Reset the device
3801 * @ioa_cfg: ioa config struct
3802 * @res: resource entry struct
3803 *
3804 * This function issues a device reset to the affected device.
3805 * If the device is a SCSI device, a LUN reset will be sent
3806 * to the device first. If that does not work, a target reset
3807 * will be sent. If the device is a SATA device, a PHY reset will
3808 * be sent.
3809 *
3810 * Return value:
3811 * 0 on success / non-zero on failure
3812 **/
3813 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3814 struct ipr_resource_entry *res)
3815 {
3816 struct ipr_cmnd *ipr_cmd;
3817 struct ipr_ioarcb *ioarcb;
3818 struct ipr_cmd_pkt *cmd_pkt;
3819 struct ipr_ioarcb_ata_regs *regs;
3820 u32 ioasc;
3821
3822 ENTER;
3823 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3824 ioarcb = &ipr_cmd->ioarcb;
3825 cmd_pkt = &ioarcb->cmd_pkt;
3826 regs = &ioarcb->add_data.u.regs;
3827
3828 ioarcb->res_handle = res->cfgte.res_handle;
3829 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3830 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3831 if (ipr_is_gata(res)) {
3832 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3833 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3834 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3835 }
3836
3837 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3838 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3839 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3840 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3841 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3842 sizeof(struct ipr_ioasa_gata));
3843
3844 LEAVE;
3845 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3846 }
3847
3848 /**
3849 * ipr_sata_reset - Reset the SATA port
3850 * @link: SATA link to reset
3851 * @classes: class of the attached device
3852 *
3853 * This function issues a SATA phy reset to the affected ATA link.
3854 *
3855 * Return value:
3856 * 0 on success / non-zero on failure
3857 **/
3858 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
3859 unsigned long deadline)
3860 {
3861 struct ipr_sata_port *sata_port = link->ap->private_data;
3862 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3863 struct ipr_resource_entry *res;
3864 unsigned long lock_flags = 0;
3865 int rc = -ENXIO;
3866
3867 ENTER;
3868 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3869 while(ioa_cfg->in_reset_reload) {
3870 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3871 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3872 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3873 }
3874
3875 res = sata_port->res;
3876 if (res) {
3877 rc = ipr_device_reset(ioa_cfg, res);
3878 switch(res->cfgte.proto) {
3879 case IPR_PROTO_SATA:
3880 case IPR_PROTO_SAS_STP:
3881 *classes = ATA_DEV_ATA;
3882 break;
3883 case IPR_PROTO_SATA_ATAPI:
3884 case IPR_PROTO_SAS_STP_ATAPI:
3885 *classes = ATA_DEV_ATAPI;
3886 break;
3887 default:
3888 *classes = ATA_DEV_UNKNOWN;
3889 break;
3890 };
3891 }
3892
3893 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3894 LEAVE;
3895 return rc;
3896 }
3897
3898 /**
3899 * ipr_eh_dev_reset - Reset the device
3900 * @scsi_cmd: scsi command struct
3901 *
3902 * This function issues a device reset to the affected device.
3903 * A LUN reset will be sent to the device first. If that does
3904 * not work, a target reset will be sent.
3905 *
3906 * Return value:
3907 * SUCCESS / FAILED
3908 **/
3909 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3910 {
3911 struct ipr_cmnd *ipr_cmd;
3912 struct ipr_ioa_cfg *ioa_cfg;
3913 struct ipr_resource_entry *res;
3914 struct ata_port *ap;
3915 int rc = 0;
3916
3917 ENTER;
3918 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3919 res = scsi_cmd->device->hostdata;
3920
3921 if (!res)
3922 return FAILED;
3923
3924 /*
3925 * If we are currently going through reset/reload, return failed. This will force the
3926 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3927 * reset to complete
3928 */
3929 if (ioa_cfg->in_reset_reload)
3930 return FAILED;
3931 if (ioa_cfg->ioa_is_dead)
3932 return FAILED;
3933
3934 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3935 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3936 if (ipr_cmd->scsi_cmd)
3937 ipr_cmd->done = ipr_scsi_eh_done;
3938 if (ipr_cmd->qc)
3939 ipr_cmd->done = ipr_sata_eh_done;
3940 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3941 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3942 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3943 }
3944 }
3945 }
3946
3947 res->resetting_device = 1;
3948 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3949
3950 if (ipr_is_gata(res) && res->sata_port) {
3951 ap = res->sata_port->ap;
3952 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3953 ata_std_error_handler(ap);
3954 spin_lock_irq(scsi_cmd->device->host->host_lock);
3955
3956 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3957 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3958 rc = -EIO;
3959 break;
3960 }
3961 }
3962 } else
3963 rc = ipr_device_reset(ioa_cfg, res);
3964 res->resetting_device = 0;
3965
3966 LEAVE;
3967 return (rc ? FAILED : SUCCESS);
3968 }
3969
3970 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3971 {
3972 int rc;
3973
3974 spin_lock_irq(cmd->device->host->host_lock);
3975 rc = __ipr_eh_dev_reset(cmd);
3976 spin_unlock_irq(cmd->device->host->host_lock);
3977
3978 return rc;
3979 }
3980
3981 /**
3982 * ipr_bus_reset_done - Op done function for bus reset.
3983 * @ipr_cmd: ipr command struct
3984 *
3985 * This function is the op done function for a bus reset
3986 *
3987 * Return value:
3988 * none
3989 **/
3990 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3991 {
3992 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3993 struct ipr_resource_entry *res;
3994
3995 ENTER;
3996 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3997 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3998 sizeof(res->cfgte.res_handle))) {
3999 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
4000 break;
4001 }
4002 }
4003
4004 /*
4005 * If abort has not completed, indicate the reset has, else call the
4006 * abort's done function to wake the sleeping eh thread
4007 */
4008 if (ipr_cmd->sibling->sibling)
4009 ipr_cmd->sibling->sibling = NULL;
4010 else
4011 ipr_cmd->sibling->done(ipr_cmd->sibling);
4012
4013 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4014 LEAVE;
4015 }
4016
4017 /**
4018 * ipr_abort_timeout - An abort task has timed out
4019 * @ipr_cmd: ipr command struct
4020 *
4021 * This function handles when an abort task times out. If this
4022 * happens we issue a bus reset since we have resources tied
4023 * up that must be freed before returning to the midlayer.
4024 *
4025 * Return value:
4026 * none
4027 **/
4028 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
4029 {
4030 struct ipr_cmnd *reset_cmd;
4031 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4032 struct ipr_cmd_pkt *cmd_pkt;
4033 unsigned long lock_flags = 0;
4034
4035 ENTER;
4036 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4037 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
4038 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4039 return;
4040 }
4041
4042 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
4043 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4044 ipr_cmd->sibling = reset_cmd;
4045 reset_cmd->sibling = ipr_cmd;
4046 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
4047 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
4048 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4049 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4050 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
4051
4052 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4054 LEAVE;
4055 }
4056
4057 /**
4058 * ipr_cancel_op - Cancel specified op
4059 * @scsi_cmd: scsi command struct
4060 *
4061 * This function cancels specified op.
4062 *
4063 * Return value:
4064 * SUCCESS / FAILED
4065 **/
4066 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
4067 {
4068 struct ipr_cmnd *ipr_cmd;
4069 struct ipr_ioa_cfg *ioa_cfg;
4070 struct ipr_resource_entry *res;
4071 struct ipr_cmd_pkt *cmd_pkt;
4072 u32 ioasc;
4073 int op_found = 0;
4074
4075 ENTER;
4076 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4077 res = scsi_cmd->device->hostdata;
4078
4079 /* If we are currently going through reset/reload, return failed.
4080 * This will force the mid-layer to call ipr_eh_host_reset,
4081 * which will then go to sleep and wait for the reset to complete
4082 */
4083 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
4084 return FAILED;
4085 if (!res || !ipr_is_gscsi(res))
4086 return FAILED;
4087
4088 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4089 if (ipr_cmd->scsi_cmd == scsi_cmd) {
4090 ipr_cmd->done = ipr_scsi_eh_done;
4091 op_found = 1;
4092 break;
4093 }
4094 }
4095
4096 if (!op_found)
4097 return SUCCESS;
4098
4099 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4100 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4101 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4102 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4103 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4104 ipr_cmd->u.sdev = scsi_cmd->device;
4105
4106 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4107 scsi_cmd->cmnd[0]);
4108 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4109 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4110
4111 /*
4112 * If the abort task timed out and we sent a bus reset, we will get
4113 * one the following responses to the abort
4114 */
4115 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4116 ioasc = 0;
4117 ipr_trace;
4118 }
4119
4120 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4121 if (!ipr_is_naca_model(res))
4122 res->needs_sync_complete = 1;
4123
4124 LEAVE;
4125 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4126 }
4127
4128 /**
4129 * ipr_eh_abort - Abort a single op
4130 * @scsi_cmd: scsi command struct
4131 *
4132 * Return value:
4133 * SUCCESS / FAILED
4134 **/
4135 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4136 {
4137 unsigned long flags;
4138 int rc;
4139
4140 ENTER;
4141
4142 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4143 rc = ipr_cancel_op(scsi_cmd);
4144 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4145
4146 LEAVE;
4147 return rc;
4148 }
4149
4150 /**
4151 * ipr_handle_other_interrupt - Handle "other" interrupts
4152 * @ioa_cfg: ioa config struct
4153 * @int_reg: interrupt register
4154 *
4155 * Return value:
4156 * IRQ_NONE / IRQ_HANDLED
4157 **/
4158 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4159 volatile u32 int_reg)
4160 {
4161 irqreturn_t rc = IRQ_HANDLED;
4162
4163 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4164 /* Mask the interrupt */
4165 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4166
4167 /* Clear the interrupt */
4168 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4169 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4170
4171 list_del(&ioa_cfg->reset_cmd->queue);
4172 del_timer(&ioa_cfg->reset_cmd->timer);
4173 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4174 } else {
4175 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4176 ioa_cfg->ioa_unit_checked = 1;
4177 else
4178 dev_err(&ioa_cfg->pdev->dev,
4179 "Permanent IOA failure. 0x%08X\n", int_reg);
4180
4181 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4182 ioa_cfg->sdt_state = GET_DUMP;
4183
4184 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4185 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4186 }
4187
4188 return rc;
4189 }
4190
4191 /**
4192 * ipr_isr_eh - Interrupt service routine error handler
4193 * @ioa_cfg: ioa config struct
4194 * @msg: message to log
4195 *
4196 * Return value:
4197 * none
4198 **/
4199 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg)
4200 {
4201 ioa_cfg->errors_logged++;
4202 dev_err(&ioa_cfg->pdev->dev, "%s\n", msg);
4203
4204 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4205 ioa_cfg->sdt_state = GET_DUMP;
4206
4207 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4208 }
4209
4210 /**
4211 * ipr_isr - Interrupt service routine
4212 * @irq: irq number
4213 * @devp: pointer to ioa config struct
4214 *
4215 * Return value:
4216 * IRQ_NONE / IRQ_HANDLED
4217 **/
4218 static irqreturn_t ipr_isr(int irq, void *devp)
4219 {
4220 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4221 unsigned long lock_flags = 0;
4222 volatile u32 int_reg, int_mask_reg;
4223 u32 ioasc;
4224 u16 cmd_index;
4225 int num_hrrq = 0;
4226 struct ipr_cmnd *ipr_cmd;
4227 irqreturn_t rc = IRQ_NONE;
4228
4229 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4230
4231 /* If interrupts are disabled, ignore the interrupt */
4232 if (!ioa_cfg->allow_interrupts) {
4233 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4234 return IRQ_NONE;
4235 }
4236
4237 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4238 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4239
4240 /* If an interrupt on the adapter did not occur, ignore it */
4241 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4242 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4243 return IRQ_NONE;
4244 }
4245
4246 while (1) {
4247 ipr_cmd = NULL;
4248
4249 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4250 ioa_cfg->toggle_bit) {
4251
4252 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4253 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4254
4255 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4256 ipr_isr_eh(ioa_cfg, "Invalid response handle from IOA");
4257 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4258 return IRQ_HANDLED;
4259 }
4260
4261 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4262
4263 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4264
4265 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4266
4267 list_del(&ipr_cmd->queue);
4268 del_timer(&ipr_cmd->timer);
4269 ipr_cmd->done(ipr_cmd);
4270
4271 rc = IRQ_HANDLED;
4272
4273 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4274 ioa_cfg->hrrq_curr++;
4275 } else {
4276 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4277 ioa_cfg->toggle_bit ^= 1u;
4278 }
4279 }
4280
4281 if (ipr_cmd != NULL) {
4282 /* Clear the PCI interrupt */
4283 do {
4284 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4285 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4286 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
4287 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
4288
4289 if (int_reg & IPR_PCII_HRRQ_UPDATED) {
4290 ipr_isr_eh(ioa_cfg, "Error clearing HRRQ");
4291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4292 return IRQ_HANDLED;
4293 }
4294
4295 } else
4296 break;
4297 }
4298
4299 if (unlikely(rc == IRQ_NONE))
4300 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4301
4302 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4303 return rc;
4304 }
4305
4306 /**
4307 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4308 * @ioa_cfg: ioa config struct
4309 * @ipr_cmd: ipr command struct
4310 *
4311 * Return value:
4312 * 0 on success / -1 on failure
4313 **/
4314 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4315 struct ipr_cmnd *ipr_cmd)
4316 {
4317 int i, nseg;
4318 struct scatterlist *sg;
4319 u32 length;
4320 u32 ioadl_flags = 0;
4321 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4322 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4323 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4324
4325 length = scsi_bufflen(scsi_cmd);
4326 if (!length)
4327 return 0;
4328
4329 nseg = scsi_dma_map(scsi_cmd);
4330 if (nseg < 0) {
4331 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4332 return -1;
4333 }
4334
4335 ipr_cmd->dma_use_sg = nseg;
4336
4337 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4338 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4339 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4340 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4341 ioarcb->write_ioadl_len =
4342 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4343 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4344 ioadl_flags = IPR_IOADL_FLAGS_READ;
4345 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4346 ioarcb->read_ioadl_len =
4347 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4348 }
4349
4350 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->add_data.u.ioadl)) {
4351 ioadl = ioarcb->add_data.u.ioadl;
4352 ioarcb->write_ioadl_addr =
4353 cpu_to_be32(be32_to_cpu(ioarcb->ioarcb_host_pci_addr) +
4354 offsetof(struct ipr_ioarcb, add_data));
4355 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4356 }
4357
4358 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
4359 ioadl[i].flags_and_data_len =
4360 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
4361 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
4362 }
4363
4364 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4365 return 0;
4366 }
4367
4368 /**
4369 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4370 * @scsi_cmd: scsi command struct
4371 *
4372 * Return value:
4373 * task attributes
4374 **/
4375 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4376 {
4377 u8 tag[2];
4378 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4379
4380 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4381 switch (tag[0]) {
4382 case MSG_SIMPLE_TAG:
4383 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4384 break;
4385 case MSG_HEAD_TAG:
4386 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4387 break;
4388 case MSG_ORDERED_TAG:
4389 rc = IPR_FLAGS_LO_ORDERED_TASK;
4390 break;
4391 };
4392 }
4393
4394 return rc;
4395 }
4396
4397 /**
4398 * ipr_erp_done - Process completion of ERP for a device
4399 * @ipr_cmd: ipr command struct
4400 *
4401 * This function copies the sense buffer into the scsi_cmd
4402 * struct and pushes the scsi_done function.
4403 *
4404 * Return value:
4405 * nothing
4406 **/
4407 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4408 {
4409 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4410 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4411 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4412 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4413
4414 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4415 scsi_cmd->result |= (DID_ERROR << 16);
4416 scmd_printk(KERN_ERR, scsi_cmd,
4417 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4418 } else {
4419 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4420 SCSI_SENSE_BUFFERSIZE);
4421 }
4422
4423 if (res) {
4424 if (!ipr_is_naca_model(res))
4425 res->needs_sync_complete = 1;
4426 res->in_erp = 0;
4427 }
4428 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4429 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4430 scsi_cmd->scsi_done(scsi_cmd);
4431 }
4432
4433 /**
4434 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4435 * @ipr_cmd: ipr command struct
4436 *
4437 * Return value:
4438 * none
4439 **/
4440 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4441 {
4442 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4443 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4444 dma_addr_t dma_addr = be32_to_cpu(ioarcb->ioarcb_host_pci_addr);
4445
4446 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4447 ioarcb->write_data_transfer_length = 0;
4448 ioarcb->read_data_transfer_length = 0;
4449 ioarcb->write_ioadl_len = 0;
4450 ioarcb->read_ioadl_len = 0;
4451 ioasa->ioasc = 0;
4452 ioasa->residual_data_len = 0;
4453 ioarcb->write_ioadl_addr =
4454 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
4455 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
4456 }
4457
4458 /**
4459 * ipr_erp_request_sense - Send request sense to a device
4460 * @ipr_cmd: ipr command struct
4461 *
4462 * This function sends a request sense to a device as a result
4463 * of a check condition.
4464 *
4465 * Return value:
4466 * nothing
4467 **/
4468 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4469 {
4470 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4471 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4472
4473 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4474 ipr_erp_done(ipr_cmd);
4475 return;
4476 }
4477
4478 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4479
4480 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4481 cmd_pkt->cdb[0] = REQUEST_SENSE;
4482 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4483 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4484 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4485 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4486
4487 ipr_cmd->ioadl[0].flags_and_data_len =
4488 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4489 ipr_cmd->ioadl[0].address =
4490 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4491
4492 ipr_cmd->ioarcb.read_ioadl_len =
4493 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4494 ipr_cmd->ioarcb.read_data_transfer_length =
4495 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4496
4497 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4498 IPR_REQUEST_SENSE_TIMEOUT * 2);
4499 }
4500
4501 /**
4502 * ipr_erp_cancel_all - Send cancel all to a device
4503 * @ipr_cmd: ipr command struct
4504 *
4505 * This function sends a cancel all to a device to clear the
4506 * queue. If we are running TCQ on the device, QERR is set to 1,
4507 * which means all outstanding ops have been dropped on the floor.
4508 * Cancel all will return them to us.
4509 *
4510 * Return value:
4511 * nothing
4512 **/
4513 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4514 {
4515 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4516 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4517 struct ipr_cmd_pkt *cmd_pkt;
4518
4519 res->in_erp = 1;
4520
4521 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4522
4523 if (!scsi_get_tag_type(scsi_cmd->device)) {
4524 ipr_erp_request_sense(ipr_cmd);
4525 return;
4526 }
4527
4528 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4529 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4530 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4531
4532 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4533 IPR_CANCEL_ALL_TIMEOUT);
4534 }
4535
4536 /**
4537 * ipr_dump_ioasa - Dump contents of IOASA
4538 * @ioa_cfg: ioa config struct
4539 * @ipr_cmd: ipr command struct
4540 * @res: resource entry struct
4541 *
4542 * This function is invoked by the interrupt handler when ops
4543 * fail. It will log the IOASA if appropriate. Only called
4544 * for GPDD ops.
4545 *
4546 * Return value:
4547 * none
4548 **/
4549 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4550 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4551 {
4552 int i;
4553 u16 data_len;
4554 u32 ioasc, fd_ioasc;
4555 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4556 __be32 *ioasa_data = (__be32 *)ioasa;
4557 int error_index;
4558
4559 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4560 fd_ioasc = be32_to_cpu(ioasa->fd_ioasc) & IPR_IOASC_IOASC_MASK;
4561
4562 if (0 == ioasc)
4563 return;
4564
4565 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4566 return;
4567
4568 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
4569 error_index = ipr_get_error(fd_ioasc);
4570 else
4571 error_index = ipr_get_error(ioasc);
4572
4573 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4574 /* Don't log an error if the IOA already logged one */
4575 if (ioasa->ilid != 0)
4576 return;
4577
4578 if (!ipr_is_gscsi(res))
4579 return;
4580
4581 if (ipr_error_table[error_index].log_ioasa == 0)
4582 return;
4583 }
4584
4585 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4586
4587 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4588 data_len = sizeof(struct ipr_ioasa);
4589 else
4590 data_len = be16_to_cpu(ioasa->ret_stat_len);
4591
4592 ipr_err("IOASA Dump:\n");
4593
4594 for (i = 0; i < data_len / 4; i += 4) {
4595 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4596 be32_to_cpu(ioasa_data[i]),
4597 be32_to_cpu(ioasa_data[i+1]),
4598 be32_to_cpu(ioasa_data[i+2]),
4599 be32_to_cpu(ioasa_data[i+3]));
4600 }
4601 }
4602
4603 /**
4604 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4605 * @ioasa: IOASA
4606 * @sense_buf: sense data buffer
4607 *
4608 * Return value:
4609 * none
4610 **/
4611 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4612 {
4613 u32 failing_lba;
4614 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4615 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4616 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4617 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4618
4619 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4620
4621 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4622 return;
4623
4624 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4625
4626 if (ipr_is_vset_device(res) &&
4627 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4628 ioasa->u.vset.failing_lba_hi != 0) {
4629 sense_buf[0] = 0x72;
4630 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4631 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4632 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4633
4634 sense_buf[7] = 12;
4635 sense_buf[8] = 0;
4636 sense_buf[9] = 0x0A;
4637 sense_buf[10] = 0x80;
4638
4639 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4640
4641 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4642 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4643 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4644 sense_buf[15] = failing_lba & 0x000000ff;
4645
4646 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4647
4648 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4649 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4650 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4651 sense_buf[19] = failing_lba & 0x000000ff;
4652 } else {
4653 sense_buf[0] = 0x70;
4654 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4655 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4656 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4657
4658 /* Illegal request */
4659 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4660 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4661 sense_buf[7] = 10; /* additional length */
4662
4663 /* IOARCB was in error */
4664 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4665 sense_buf[15] = 0xC0;
4666 else /* Parameter data was invalid */
4667 sense_buf[15] = 0x80;
4668
4669 sense_buf[16] =
4670 ((IPR_FIELD_POINTER_MASK &
4671 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4672 sense_buf[17] =
4673 (IPR_FIELD_POINTER_MASK &
4674 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4675 } else {
4676 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4677 if (ipr_is_vset_device(res))
4678 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4679 else
4680 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4681
4682 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4683 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4684 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4685 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4686 sense_buf[6] = failing_lba & 0x000000ff;
4687 }
4688
4689 sense_buf[7] = 6; /* additional length */
4690 }
4691 }
4692 }
4693
4694 /**
4695 * ipr_get_autosense - Copy autosense data to sense buffer
4696 * @ipr_cmd: ipr command struct
4697 *
4698 * This function copies the autosense buffer to the buffer
4699 * in the scsi_cmd, if there is autosense available.
4700 *
4701 * Return value:
4702 * 1 if autosense was available / 0 if not
4703 **/
4704 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4705 {
4706 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4707
4708 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4709 return 0;
4710
4711 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4712 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4713 SCSI_SENSE_BUFFERSIZE));
4714 return 1;
4715 }
4716
4717 /**
4718 * ipr_erp_start - Process an error response for a SCSI op
4719 * @ioa_cfg: ioa config struct
4720 * @ipr_cmd: ipr command struct
4721 *
4722 * This function determines whether or not to initiate ERP
4723 * on the affected device.
4724 *
4725 * Return value:
4726 * nothing
4727 **/
4728 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4729 struct ipr_cmnd *ipr_cmd)
4730 {
4731 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4732 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4733 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4734 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
4735
4736 if (!res) {
4737 ipr_scsi_eh_done(ipr_cmd);
4738 return;
4739 }
4740
4741 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
4742 ipr_gen_sense(ipr_cmd);
4743
4744 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4745
4746 switch (masked_ioasc) {
4747 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4748 if (ipr_is_naca_model(res))
4749 scsi_cmd->result |= (DID_ABORT << 16);
4750 else
4751 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4752 break;
4753 case IPR_IOASC_IR_RESOURCE_HANDLE:
4754 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4755 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4756 break;
4757 case IPR_IOASC_HW_SEL_TIMEOUT:
4758 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4759 if (!ipr_is_naca_model(res))
4760 res->needs_sync_complete = 1;
4761 break;
4762 case IPR_IOASC_SYNC_REQUIRED:
4763 if (!res->in_erp)
4764 res->needs_sync_complete = 1;
4765 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4766 break;
4767 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4768 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4769 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4770 break;
4771 case IPR_IOASC_BUS_WAS_RESET:
4772 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4773 /*
4774 * Report the bus reset and ask for a retry. The device
4775 * will give CC/UA the next command.
4776 */
4777 if (!res->resetting_device)
4778 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4779 scsi_cmd->result |= (DID_ERROR << 16);
4780 if (!ipr_is_naca_model(res))
4781 res->needs_sync_complete = 1;
4782 break;
4783 case IPR_IOASC_HW_DEV_BUS_STATUS:
4784 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4785 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4786 if (!ipr_get_autosense(ipr_cmd)) {
4787 if (!ipr_is_naca_model(res)) {
4788 ipr_erp_cancel_all(ipr_cmd);
4789 return;
4790 }
4791 }
4792 }
4793 if (!ipr_is_naca_model(res))
4794 res->needs_sync_complete = 1;
4795 break;
4796 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4797 break;
4798 default:
4799 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4800 scsi_cmd->result |= (DID_ERROR << 16);
4801 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4802 res->needs_sync_complete = 1;
4803 break;
4804 }
4805
4806 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4807 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4808 scsi_cmd->scsi_done(scsi_cmd);
4809 }
4810
4811 /**
4812 * ipr_scsi_done - mid-layer done function
4813 * @ipr_cmd: ipr command struct
4814 *
4815 * This function is invoked by the interrupt handler for
4816 * ops generated by the SCSI mid-layer
4817 *
4818 * Return value:
4819 * none
4820 **/
4821 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4822 {
4823 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4824 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4825 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4826
4827 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->ioasa.residual_data_len));
4828
4829 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4830 scsi_dma_unmap(ipr_cmd->scsi_cmd);
4831 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4832 scsi_cmd->scsi_done(scsi_cmd);
4833 } else
4834 ipr_erp_start(ioa_cfg, ipr_cmd);
4835 }
4836
4837 /**
4838 * ipr_queuecommand - Queue a mid-layer request
4839 * @scsi_cmd: scsi command struct
4840 * @done: done function
4841 *
4842 * This function queues a request generated by the mid-layer.
4843 *
4844 * Return value:
4845 * 0 on success
4846 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4847 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4848 **/
4849 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4850 void (*done) (struct scsi_cmnd *))
4851 {
4852 struct ipr_ioa_cfg *ioa_cfg;
4853 struct ipr_resource_entry *res;
4854 struct ipr_ioarcb *ioarcb;
4855 struct ipr_cmnd *ipr_cmd;
4856 int rc = 0;
4857
4858 scsi_cmd->scsi_done = done;
4859 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4860 res = scsi_cmd->device->hostdata;
4861 scsi_cmd->result = (DID_OK << 16);
4862
4863 /*
4864 * We are currently blocking all devices due to a host reset
4865 * We have told the host to stop giving us new requests, but
4866 * ERP ops don't count. FIXME
4867 */
4868 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4869 return SCSI_MLQUEUE_HOST_BUSY;
4870
4871 /*
4872 * FIXME - Create scsi_set_host_offline interface
4873 * and the ioa_is_dead check can be removed
4874 */
4875 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4876 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4877 scsi_cmd->result = (DID_NO_CONNECT << 16);
4878 scsi_cmd->scsi_done(scsi_cmd);
4879 return 0;
4880 }
4881
4882 if (ipr_is_gata(res) && res->sata_port)
4883 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4884
4885 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4886 ioarcb = &ipr_cmd->ioarcb;
4887 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4888
4889 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4890 ipr_cmd->scsi_cmd = scsi_cmd;
4891 ioarcb->res_handle = res->cfgte.res_handle;
4892 ipr_cmd->done = ipr_scsi_done;
4893 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4894
4895 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4896 if (scsi_cmd->underflow == 0)
4897 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4898
4899 if (res->needs_sync_complete) {
4900 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4901 res->needs_sync_complete = 0;
4902 }
4903
4904 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4905 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4906 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4907 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4908 }
4909
4910 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4911 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4912 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4913
4914 if (likely(rc == 0))
4915 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4916
4917 if (likely(rc == 0)) {
4918 mb();
4919 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4920 ioa_cfg->regs.ioarrin_reg);
4921 } else {
4922 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4923 return SCSI_MLQUEUE_HOST_BUSY;
4924 }
4925
4926 return 0;
4927 }
4928
4929 /**
4930 * ipr_ioctl - IOCTL handler
4931 * @sdev: scsi device struct
4932 * @cmd: IOCTL cmd
4933 * @arg: IOCTL arg
4934 *
4935 * Return value:
4936 * 0 on success / other on failure
4937 **/
4938 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4939 {
4940 struct ipr_resource_entry *res;
4941
4942 res = (struct ipr_resource_entry *)sdev->hostdata;
4943 if (res && ipr_is_gata(res)) {
4944 if (cmd == HDIO_GET_IDENTITY)
4945 return -ENOTTY;
4946 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
4947 }
4948
4949 return -EINVAL;
4950 }
4951
4952 /**
4953 * ipr_info - Get information about the card/driver
4954 * @scsi_host: scsi host struct
4955 *
4956 * Return value:
4957 * pointer to buffer with description string
4958 **/
4959 static const char * ipr_ioa_info(struct Scsi_Host *host)
4960 {
4961 static char buffer[512];
4962 struct ipr_ioa_cfg *ioa_cfg;
4963 unsigned long lock_flags = 0;
4964
4965 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4966
4967 spin_lock_irqsave(host->host_lock, lock_flags);
4968 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4969 spin_unlock_irqrestore(host->host_lock, lock_flags);
4970
4971 return buffer;
4972 }
4973
4974 static struct scsi_host_template driver_template = {
4975 .module = THIS_MODULE,
4976 .name = "IPR",
4977 .info = ipr_ioa_info,
4978 .ioctl = ipr_ioctl,
4979 .queuecommand = ipr_queuecommand,
4980 .eh_abort_handler = ipr_eh_abort,
4981 .eh_device_reset_handler = ipr_eh_dev_reset,
4982 .eh_host_reset_handler = ipr_eh_host_reset,
4983 .slave_alloc = ipr_slave_alloc,
4984 .slave_configure = ipr_slave_configure,
4985 .slave_destroy = ipr_slave_destroy,
4986 .target_alloc = ipr_target_alloc,
4987 .target_destroy = ipr_target_destroy,
4988 .change_queue_depth = ipr_change_queue_depth,
4989 .change_queue_type = ipr_change_queue_type,
4990 .bios_param = ipr_biosparam,
4991 .can_queue = IPR_MAX_COMMANDS,
4992 .this_id = -1,
4993 .sg_tablesize = IPR_MAX_SGLIST,
4994 .max_sectors = IPR_IOA_MAX_SECTORS,
4995 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4996 .use_clustering = ENABLE_CLUSTERING,
4997 .shost_attrs = ipr_ioa_attrs,
4998 .sdev_attrs = ipr_dev_attrs,
4999 .proc_name = IPR_NAME
5000 };
5001
5002 /**
5003 * ipr_ata_phy_reset - libata phy_reset handler
5004 * @ap: ata port to reset
5005 *
5006 **/
5007 static void ipr_ata_phy_reset(struct ata_port *ap)
5008 {
5009 unsigned long flags;
5010 struct ipr_sata_port *sata_port = ap->private_data;
5011 struct ipr_resource_entry *res = sata_port->res;
5012 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5013 int rc;
5014
5015 ENTER;
5016 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5017 while(ioa_cfg->in_reset_reload) {
5018 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5019 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5020 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5021 }
5022
5023 if (!ioa_cfg->allow_cmds)
5024 goto out_unlock;
5025
5026 rc = ipr_device_reset(ioa_cfg, res);
5027
5028 if (rc) {
5029 ata_port_disable(ap);
5030 goto out_unlock;
5031 }
5032
5033 switch(res->cfgte.proto) {
5034 case IPR_PROTO_SATA:
5035 case IPR_PROTO_SAS_STP:
5036 ap->link.device[0].class = ATA_DEV_ATA;
5037 break;
5038 case IPR_PROTO_SATA_ATAPI:
5039 case IPR_PROTO_SAS_STP_ATAPI:
5040 ap->link.device[0].class = ATA_DEV_ATAPI;
5041 break;
5042 default:
5043 ap->link.device[0].class = ATA_DEV_UNKNOWN;
5044 ata_port_disable(ap);
5045 break;
5046 };
5047
5048 out_unlock:
5049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5050 LEAVE;
5051 }
5052
5053 /**
5054 * ipr_ata_post_internal - Cleanup after an internal command
5055 * @qc: ATA queued command
5056 *
5057 * Return value:
5058 * none
5059 **/
5060 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
5061 {
5062 struct ipr_sata_port *sata_port = qc->ap->private_data;
5063 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5064 struct ipr_cmnd *ipr_cmd;
5065 unsigned long flags;
5066
5067 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5068 while(ioa_cfg->in_reset_reload) {
5069 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5070 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5071 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
5072 }
5073
5074 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
5075 if (ipr_cmd->qc == qc) {
5076 ipr_device_reset(ioa_cfg, sata_port->res);
5077 break;
5078 }
5079 }
5080 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
5081 }
5082
5083 /**
5084 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5085 * @regs: destination
5086 * @tf: source ATA taskfile
5087 *
5088 * Return value:
5089 * none
5090 **/
5091 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5092 struct ata_taskfile *tf)
5093 {
5094 regs->feature = tf->feature;
5095 regs->nsect = tf->nsect;
5096 regs->lbal = tf->lbal;
5097 regs->lbam = tf->lbam;
5098 regs->lbah = tf->lbah;
5099 regs->device = tf->device;
5100 regs->command = tf->command;
5101 regs->hob_feature = tf->hob_feature;
5102 regs->hob_nsect = tf->hob_nsect;
5103 regs->hob_lbal = tf->hob_lbal;
5104 regs->hob_lbam = tf->hob_lbam;
5105 regs->hob_lbah = tf->hob_lbah;
5106 regs->ctl = tf->ctl;
5107 }
5108
5109 /**
5110 * ipr_sata_done - done function for SATA commands
5111 * @ipr_cmd: ipr command struct
5112 *
5113 * This function is invoked by the interrupt handler for
5114 * ops generated by the SCSI mid-layer to SATA devices
5115 *
5116 * Return value:
5117 * none
5118 **/
5119 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5120 {
5121 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5122 struct ata_queued_cmd *qc = ipr_cmd->qc;
5123 struct ipr_sata_port *sata_port = qc->ap->private_data;
5124 struct ipr_resource_entry *res = sata_port->res;
5125 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5126
5127 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5128 sizeof(struct ipr_ioasa_gata));
5129 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5130
5131 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5132 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5133 res->cfgte.res_addr.target);
5134
5135 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5136 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5137 else
5138 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5139 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5140 ata_qc_complete(qc);
5141 }
5142
5143 /**
5144 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5145 * @ipr_cmd: ipr command struct
5146 * @qc: ATA queued command
5147 *
5148 **/
5149 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5150 struct ata_queued_cmd *qc)
5151 {
5152 u32 ioadl_flags = 0;
5153 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5154 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5155 struct ipr_ioadl_desc *last_ioadl = NULL;
5156 int len = qc->nbytes;
5157 struct scatterlist *sg;
5158 unsigned int si;
5159
5160 if (len == 0)
5161 return;
5162
5163 if (qc->dma_dir == DMA_TO_DEVICE) {
5164 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5165 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5166 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5167 ioarcb->write_ioadl_len =
5168 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5169 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5170 ioadl_flags = IPR_IOADL_FLAGS_READ;
5171 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5172 ioarcb->read_ioadl_len =
5173 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5174 }
5175
5176 for_each_sg(qc->sg, sg, qc->n_elem, si) {
5177 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5178 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5179
5180 last_ioadl = ioadl;
5181 ioadl++;
5182 }
5183
5184 if (likely(last_ioadl))
5185 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5186 }
5187
5188 /**
5189 * ipr_qc_issue - Issue a SATA qc to a device
5190 * @qc: queued command
5191 *
5192 * Return value:
5193 * 0 if success
5194 **/
5195 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5196 {
5197 struct ata_port *ap = qc->ap;
5198 struct ipr_sata_port *sata_port = ap->private_data;
5199 struct ipr_resource_entry *res = sata_port->res;
5200 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5201 struct ipr_cmnd *ipr_cmd;
5202 struct ipr_ioarcb *ioarcb;
5203 struct ipr_ioarcb_ata_regs *regs;
5204
5205 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5206 return AC_ERR_SYSTEM;
5207
5208 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5209 ioarcb = &ipr_cmd->ioarcb;
5210 regs = &ioarcb->add_data.u.regs;
5211
5212 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5213 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5214
5215 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5216 ipr_cmd->qc = qc;
5217 ipr_cmd->done = ipr_sata_done;
5218 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5219 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5220 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5221 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5222 ipr_cmd->dma_use_sg = qc->n_elem;
5223
5224 ipr_build_ata_ioadl(ipr_cmd, qc);
5225 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5226 ipr_copy_sata_tf(regs, &qc->tf);
5227 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5228 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5229
5230 switch (qc->tf.protocol) {
5231 case ATA_PROT_NODATA:
5232 case ATA_PROT_PIO:
5233 break;
5234
5235 case ATA_PROT_DMA:
5236 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5237 break;
5238
5239 case ATAPI_PROT_PIO:
5240 case ATAPI_PROT_NODATA:
5241 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5242 break;
5243
5244 case ATAPI_PROT_DMA:
5245 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5246 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5247 break;
5248
5249 default:
5250 WARN_ON(1);
5251 return AC_ERR_INVALID;
5252 }
5253
5254 mb();
5255 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5256 ioa_cfg->regs.ioarrin_reg);
5257 return 0;
5258 }
5259
5260 /**
5261 * ipr_qc_fill_rtf - Read result TF
5262 * @qc: ATA queued command
5263 *
5264 * Return value:
5265 * true
5266 **/
5267 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
5268 {
5269 struct ipr_sata_port *sata_port = qc->ap->private_data;
5270 struct ipr_ioasa_gata *g = &sata_port->ioasa;
5271 struct ata_taskfile *tf = &qc->result_tf;
5272
5273 tf->feature = g->error;
5274 tf->nsect = g->nsect;
5275 tf->lbal = g->lbal;
5276 tf->lbam = g->lbam;
5277 tf->lbah = g->lbah;
5278 tf->device = g->device;
5279 tf->command = g->status;
5280 tf->hob_nsect = g->hob_nsect;
5281 tf->hob_lbal = g->hob_lbal;
5282 tf->hob_lbam = g->hob_lbam;
5283 tf->hob_lbah = g->hob_lbah;
5284 tf->ctl = g->alt_status;
5285
5286 return true;
5287 }
5288
5289 static struct ata_port_operations ipr_sata_ops = {
5290 .phy_reset = ipr_ata_phy_reset,
5291 .hardreset = ipr_sata_reset,
5292 .post_internal_cmd = ipr_ata_post_internal,
5293 .qc_prep = ata_noop_qc_prep,
5294 .qc_issue = ipr_qc_issue,
5295 .qc_fill_rtf = ipr_qc_fill_rtf,
5296 .port_start = ata_sas_port_start,
5297 .port_stop = ata_sas_port_stop
5298 };
5299
5300 static struct ata_port_info sata_port_info = {
5301 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5302 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5303 .pio_mask = 0x10, /* pio4 */
5304 .mwdma_mask = 0x07,
5305 .udma_mask = 0x7f, /* udma0-6 */
5306 .port_ops = &ipr_sata_ops
5307 };
5308
5309 #ifdef CONFIG_PPC_PSERIES
5310 static const u16 ipr_blocked_processors[] = {
5311 PV_NORTHSTAR,
5312 PV_PULSAR,
5313 PV_POWER4,
5314 PV_ICESTAR,
5315 PV_SSTAR,
5316 PV_POWER4p,
5317 PV_630,
5318 PV_630p
5319 };
5320
5321 /**
5322 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5323 * @ioa_cfg: ioa cfg struct
5324 *
5325 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5326 * certain pSeries hardware. This function determines if the given
5327 * adapter is in one of these confgurations or not.
5328 *
5329 * Return value:
5330 * 1 if adapter is not supported / 0 if adapter is supported
5331 **/
5332 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5333 {
5334 int i;
5335
5336 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
5337 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5338 if (__is_processor(ipr_blocked_processors[i]))
5339 return 1;
5340 }
5341 }
5342 return 0;
5343 }
5344 #else
5345 #define ipr_invalid_adapter(ioa_cfg) 0
5346 #endif
5347
5348 /**
5349 * ipr_ioa_bringdown_done - IOA bring down completion.
5350 * @ipr_cmd: ipr command struct
5351 *
5352 * This function processes the completion of an adapter bring down.
5353 * It wakes any reset sleepers.
5354 *
5355 * Return value:
5356 * IPR_RC_JOB_RETURN
5357 **/
5358 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5359 {
5360 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5361
5362 ENTER;
5363 ioa_cfg->in_reset_reload = 0;
5364 ioa_cfg->reset_retries = 0;
5365 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5366 wake_up_all(&ioa_cfg->reset_wait_q);
5367
5368 spin_unlock_irq(ioa_cfg->host->host_lock);
5369 scsi_unblock_requests(ioa_cfg->host);
5370 spin_lock_irq(ioa_cfg->host->host_lock);
5371 LEAVE;
5372
5373 return IPR_RC_JOB_RETURN;
5374 }
5375
5376 /**
5377 * ipr_ioa_reset_done - IOA reset completion.
5378 * @ipr_cmd: ipr command struct
5379 *
5380 * This function processes the completion of an adapter reset.
5381 * It schedules any necessary mid-layer add/removes and
5382 * wakes any reset sleepers.
5383 *
5384 * Return value:
5385 * IPR_RC_JOB_RETURN
5386 **/
5387 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5388 {
5389 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5390 struct ipr_resource_entry *res;
5391 struct ipr_hostrcb *hostrcb, *temp;
5392 int i = 0;
5393
5394 ENTER;
5395 ioa_cfg->in_reset_reload = 0;
5396 ioa_cfg->allow_cmds = 1;
5397 ioa_cfg->reset_cmd = NULL;
5398 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5399
5400 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5401 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5402 ipr_trace;
5403 break;
5404 }
5405 }
5406 schedule_work(&ioa_cfg->work_q);
5407
5408 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5409 list_del(&hostrcb->queue);
5410 if (i++ < IPR_NUM_LOG_HCAMS)
5411 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5412 else
5413 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5414 }
5415
5416 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
5417 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5418
5419 ioa_cfg->reset_retries = 0;
5420 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5421 wake_up_all(&ioa_cfg->reset_wait_q);
5422
5423 spin_unlock(ioa_cfg->host->host_lock);
5424 scsi_unblock_requests(ioa_cfg->host);
5425 spin_lock(ioa_cfg->host->host_lock);
5426
5427 if (!ioa_cfg->allow_cmds)
5428 scsi_block_requests(ioa_cfg->host);
5429
5430 LEAVE;
5431 return IPR_RC_JOB_RETURN;
5432 }
5433
5434 /**
5435 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5436 * @supported_dev: supported device struct
5437 * @vpids: vendor product id struct
5438 *
5439 * Return value:
5440 * none
5441 **/
5442 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5443 struct ipr_std_inq_vpids *vpids)
5444 {
5445 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5446 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5447 supported_dev->num_records = 1;
5448 supported_dev->data_length =
5449 cpu_to_be16(sizeof(struct ipr_supported_device));
5450 supported_dev->reserved = 0;
5451 }
5452
5453 /**
5454 * ipr_set_supported_devs - Send Set Supported Devices for a device
5455 * @ipr_cmd: ipr command struct
5456 *
5457 * This function send a Set Supported Devices to the adapter
5458 *
5459 * Return value:
5460 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5461 **/
5462 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5463 {
5464 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5465 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5466 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5467 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5468 struct ipr_resource_entry *res = ipr_cmd->u.res;
5469
5470 ipr_cmd->job_step = ipr_ioa_reset_done;
5471
5472 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5473 if (!ipr_is_scsi_disk(res))
5474 continue;
5475
5476 ipr_cmd->u.res = res;
5477 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5478
5479 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5480 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5481 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5482
5483 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5484 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5485 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5486
5487 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5488 sizeof(struct ipr_supported_device));
5489 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5490 offsetof(struct ipr_misc_cbs, supp_dev));
5491 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5492 ioarcb->write_data_transfer_length =
5493 cpu_to_be32(sizeof(struct ipr_supported_device));
5494
5495 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5496 IPR_SET_SUP_DEVICE_TIMEOUT);
5497
5498 ipr_cmd->job_step = ipr_set_supported_devs;
5499 return IPR_RC_JOB_RETURN;
5500 }
5501
5502 return IPR_RC_JOB_CONTINUE;
5503 }
5504
5505 /**
5506 * ipr_setup_write_cache - Disable write cache if needed
5507 * @ipr_cmd: ipr command struct
5508 *
5509 * This function sets up adapters write cache to desired setting
5510 *
5511 * Return value:
5512 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5513 **/
5514 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5515 {
5516 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5517
5518 ipr_cmd->job_step = ipr_set_supported_devs;
5519 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5520 struct ipr_resource_entry, queue);
5521
5522 if (ioa_cfg->cache_state != CACHE_DISABLED)
5523 return IPR_RC_JOB_CONTINUE;
5524
5525 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5526 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5527 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5528 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5529
5530 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5531
5532 return IPR_RC_JOB_RETURN;
5533 }
5534
5535 /**
5536 * ipr_get_mode_page - Locate specified mode page
5537 * @mode_pages: mode page buffer
5538 * @page_code: page code to find
5539 * @len: minimum required length for mode page
5540 *
5541 * Return value:
5542 * pointer to mode page / NULL on failure
5543 **/
5544 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5545 u32 page_code, u32 len)
5546 {
5547 struct ipr_mode_page_hdr *mode_hdr;
5548 u32 page_length;
5549 u32 length;
5550
5551 if (!mode_pages || (mode_pages->hdr.length == 0))
5552 return NULL;
5553
5554 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5555 mode_hdr = (struct ipr_mode_page_hdr *)
5556 (mode_pages->data + mode_pages->hdr.block_desc_len);
5557
5558 while (length) {
5559 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5560 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5561 return mode_hdr;
5562 break;
5563 } else {
5564 page_length = (sizeof(struct ipr_mode_page_hdr) +
5565 mode_hdr->page_length);
5566 length -= page_length;
5567 mode_hdr = (struct ipr_mode_page_hdr *)
5568 ((unsigned long)mode_hdr + page_length);
5569 }
5570 }
5571 return NULL;
5572 }
5573
5574 /**
5575 * ipr_check_term_power - Check for term power errors
5576 * @ioa_cfg: ioa config struct
5577 * @mode_pages: IOAFP mode pages buffer
5578 *
5579 * Check the IOAFP's mode page 28 for term power errors
5580 *
5581 * Return value:
5582 * nothing
5583 **/
5584 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5585 struct ipr_mode_pages *mode_pages)
5586 {
5587 int i;
5588 int entry_length;
5589 struct ipr_dev_bus_entry *bus;
5590 struct ipr_mode_page28 *mode_page;
5591
5592 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5593 sizeof(struct ipr_mode_page28));
5594
5595 entry_length = mode_page->entry_length;
5596
5597 bus = mode_page->bus;
5598
5599 for (i = 0; i < mode_page->num_entries; i++) {
5600 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5601 dev_err(&ioa_cfg->pdev->dev,
5602 "Term power is absent on scsi bus %d\n",
5603 bus->res_addr.bus);
5604 }
5605
5606 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5607 }
5608 }
5609
5610 /**
5611 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5612 * @ioa_cfg: ioa config struct
5613 *
5614 * Looks through the config table checking for SES devices. If
5615 * the SES device is in the SES table indicating a maximum SCSI
5616 * bus speed, the speed is limited for the bus.
5617 *
5618 * Return value:
5619 * none
5620 **/
5621 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5622 {
5623 u32 max_xfer_rate;
5624 int i;
5625
5626 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5627 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5628 ioa_cfg->bus_attr[i].bus_width);
5629
5630 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5631 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5632 }
5633 }
5634
5635 /**
5636 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5637 * @ioa_cfg: ioa config struct
5638 * @mode_pages: mode page 28 buffer
5639 *
5640 * Updates mode page 28 based on driver configuration
5641 *
5642 * Return value:
5643 * none
5644 **/
5645 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5646 struct ipr_mode_pages *mode_pages)
5647 {
5648 int i, entry_length;
5649 struct ipr_dev_bus_entry *bus;
5650 struct ipr_bus_attributes *bus_attr;
5651 struct ipr_mode_page28 *mode_page;
5652
5653 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5654 sizeof(struct ipr_mode_page28));
5655
5656 entry_length = mode_page->entry_length;
5657
5658 /* Loop for each device bus entry */
5659 for (i = 0, bus = mode_page->bus;
5660 i < mode_page->num_entries;
5661 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5662 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5663 dev_err(&ioa_cfg->pdev->dev,
5664 "Invalid resource address reported: 0x%08X\n",
5665 IPR_GET_PHYS_LOC(bus->res_addr));
5666 continue;
5667 }
5668
5669 bus_attr = &ioa_cfg->bus_attr[i];
5670 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5671 bus->bus_width = bus_attr->bus_width;
5672 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5673 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5674 if (bus_attr->qas_enabled)
5675 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5676 else
5677 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5678 }
5679 }
5680
5681 /**
5682 * ipr_build_mode_select - Build a mode select command
5683 * @ipr_cmd: ipr command struct
5684 * @res_handle: resource handle to send command to
5685 * @parm: Byte 2 of Mode Sense command
5686 * @dma_addr: DMA buffer address
5687 * @xfer_len: data transfer length
5688 *
5689 * Return value:
5690 * none
5691 **/
5692 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5693 __be32 res_handle, u8 parm, u32 dma_addr,
5694 u8 xfer_len)
5695 {
5696 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5697 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5698
5699 ioarcb->res_handle = res_handle;
5700 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5701 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5702 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5703 ioarcb->cmd_pkt.cdb[1] = parm;
5704 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5705
5706 ioadl->flags_and_data_len =
5707 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5708 ioadl->address = cpu_to_be32(dma_addr);
5709 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5710 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5711 }
5712
5713 /**
5714 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5715 * @ipr_cmd: ipr command struct
5716 *
5717 * This function sets up the SCSI bus attributes and sends
5718 * a Mode Select for Page 28 to activate them.
5719 *
5720 * Return value:
5721 * IPR_RC_JOB_RETURN
5722 **/
5723 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5724 {
5725 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5726 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5727 int length;
5728
5729 ENTER;
5730 ipr_scsi_bus_speed_limit(ioa_cfg);
5731 ipr_check_term_power(ioa_cfg, mode_pages);
5732 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5733 length = mode_pages->hdr.length + 1;
5734 mode_pages->hdr.length = 0;
5735
5736 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5737 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5738 length);
5739
5740 ipr_cmd->job_step = ipr_setup_write_cache;
5741 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5742
5743 LEAVE;
5744 return IPR_RC_JOB_RETURN;
5745 }
5746
5747 /**
5748 * ipr_build_mode_sense - Builds a mode sense command
5749 * @ipr_cmd: ipr command struct
5750 * @res: resource entry struct
5751 * @parm: Byte 2 of mode sense command
5752 * @dma_addr: DMA address of mode sense buffer
5753 * @xfer_len: Size of DMA buffer
5754 *
5755 * Return value:
5756 * none
5757 **/
5758 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5759 __be32 res_handle,
5760 u8 parm, u32 dma_addr, u8 xfer_len)
5761 {
5762 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5763 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5764
5765 ioarcb->res_handle = res_handle;
5766 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5767 ioarcb->cmd_pkt.cdb[2] = parm;
5768 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5769 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5770
5771 ioadl->flags_and_data_len =
5772 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5773 ioadl->address = cpu_to_be32(dma_addr);
5774 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5775 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5776 }
5777
5778 /**
5779 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5780 * @ipr_cmd: ipr command struct
5781 *
5782 * This function handles the failure of an IOA bringup command.
5783 *
5784 * Return value:
5785 * IPR_RC_JOB_RETURN
5786 **/
5787 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5788 {
5789 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5790 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5791
5792 dev_err(&ioa_cfg->pdev->dev,
5793 "0x%02X failed with IOASC: 0x%08X\n",
5794 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5795
5796 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5797 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5798 return IPR_RC_JOB_RETURN;
5799 }
5800
5801 /**
5802 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5803 * @ipr_cmd: ipr command struct
5804 *
5805 * This function handles the failure of a Mode Sense to the IOAFP.
5806 * Some adapters do not handle all mode pages.
5807 *
5808 * Return value:
5809 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5810 **/
5811 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5812 {
5813 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5814
5815 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5816 ipr_cmd->job_step = ipr_setup_write_cache;
5817 return IPR_RC_JOB_CONTINUE;
5818 }
5819
5820 return ipr_reset_cmd_failed(ipr_cmd);
5821 }
5822
5823 /**
5824 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5825 * @ipr_cmd: ipr command struct
5826 *
5827 * This function send a Page 28 mode sense to the IOA to
5828 * retrieve SCSI bus attributes.
5829 *
5830 * Return value:
5831 * IPR_RC_JOB_RETURN
5832 **/
5833 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5834 {
5835 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5836
5837 ENTER;
5838 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5839 0x28, ioa_cfg->vpd_cbs_dma +
5840 offsetof(struct ipr_misc_cbs, mode_pages),
5841 sizeof(struct ipr_mode_pages));
5842
5843 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5844 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5845
5846 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5847
5848 LEAVE;
5849 return IPR_RC_JOB_RETURN;
5850 }
5851
5852 /**
5853 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
5854 * @ipr_cmd: ipr command struct
5855 *
5856 * This function enables dual IOA RAID support if possible.
5857 *
5858 * Return value:
5859 * IPR_RC_JOB_RETURN
5860 **/
5861 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
5862 {
5863 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5864 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5865 struct ipr_mode_page24 *mode_page;
5866 int length;
5867
5868 ENTER;
5869 mode_page = ipr_get_mode_page(mode_pages, 0x24,
5870 sizeof(struct ipr_mode_page24));
5871
5872 if (mode_page)
5873 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
5874
5875 length = mode_pages->hdr.length + 1;
5876 mode_pages->hdr.length = 0;
5877
5878 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5879 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5880 length);
5881
5882 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5883 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5884
5885 LEAVE;
5886 return IPR_RC_JOB_RETURN;
5887 }
5888
5889 /**
5890 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
5891 * @ipr_cmd: ipr command struct
5892 *
5893 * This function handles the failure of a Mode Sense to the IOAFP.
5894 * Some adapters do not handle all mode pages.
5895 *
5896 * Return value:
5897 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5898 **/
5899 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
5900 {
5901 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5902
5903 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5904 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5905 return IPR_RC_JOB_CONTINUE;
5906 }
5907
5908 return ipr_reset_cmd_failed(ipr_cmd);
5909 }
5910
5911 /**
5912 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
5913 * @ipr_cmd: ipr command struct
5914 *
5915 * This function send a mode sense to the IOA to retrieve
5916 * the IOA Advanced Function Control mode page.
5917 *
5918 * Return value:
5919 * IPR_RC_JOB_RETURN
5920 **/
5921 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
5922 {
5923 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5924
5925 ENTER;
5926 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5927 0x24, ioa_cfg->vpd_cbs_dma +
5928 offsetof(struct ipr_misc_cbs, mode_pages),
5929 sizeof(struct ipr_mode_pages));
5930
5931 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
5932 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
5933
5934 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5935
5936 LEAVE;
5937 return IPR_RC_JOB_RETURN;
5938 }
5939
5940 /**
5941 * ipr_init_res_table - Initialize the resource table
5942 * @ipr_cmd: ipr command struct
5943 *
5944 * This function looks through the existing resource table, comparing
5945 * it with the config table. This function will take care of old/new
5946 * devices and schedule adding/removing them from the mid-layer
5947 * as appropriate.
5948 *
5949 * Return value:
5950 * IPR_RC_JOB_CONTINUE
5951 **/
5952 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5953 {
5954 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5955 struct ipr_resource_entry *res, *temp;
5956 struct ipr_config_table_entry *cfgte;
5957 int found, i;
5958 LIST_HEAD(old_res);
5959
5960 ENTER;
5961 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5962 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5963
5964 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5965 list_move_tail(&res->queue, &old_res);
5966
5967 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5968 cfgte = &ioa_cfg->cfg_table->dev[i];
5969 found = 0;
5970
5971 list_for_each_entry_safe(res, temp, &old_res, queue) {
5972 if (!memcmp(&res->cfgte.res_addr,
5973 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5974 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5975 found = 1;
5976 break;
5977 }
5978 }
5979
5980 if (!found) {
5981 if (list_empty(&ioa_cfg->free_res_q)) {
5982 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5983 break;
5984 }
5985
5986 found = 1;
5987 res = list_entry(ioa_cfg->free_res_q.next,
5988 struct ipr_resource_entry, queue);
5989 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5990 ipr_init_res_entry(res);
5991 res->add_to_ml = 1;
5992 }
5993
5994 if (found)
5995 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5996 }
5997
5998 list_for_each_entry_safe(res, temp, &old_res, queue) {
5999 if (res->sdev) {
6000 res->del_from_ml = 1;
6001 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
6002 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
6003 } else {
6004 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
6005 }
6006 }
6007
6008 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6009 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
6010 else
6011 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
6012
6013 LEAVE;
6014 return IPR_RC_JOB_CONTINUE;
6015 }
6016
6017 /**
6018 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
6019 * @ipr_cmd: ipr command struct
6020 *
6021 * This function sends a Query IOA Configuration command
6022 * to the adapter to retrieve the IOA configuration table.
6023 *
6024 * Return value:
6025 * IPR_RC_JOB_RETURN
6026 **/
6027 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
6028 {
6029 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6030 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6031 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6032 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
6033 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6034
6035 ENTER;
6036 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
6037 ioa_cfg->dual_raid = 1;
6038 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
6039 ucode_vpd->major_release, ucode_vpd->card_type,
6040 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
6041 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6042 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6043
6044 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
6045 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
6046 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
6047
6048 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6049 ioarcb->read_data_transfer_length =
6050 cpu_to_be32(sizeof(struct ipr_config_table));
6051
6052 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
6053 ioadl->flags_and_data_len =
6054 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
6055
6056 ipr_cmd->job_step = ipr_init_res_table;
6057
6058 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6059
6060 LEAVE;
6061 return IPR_RC_JOB_RETURN;
6062 }
6063
6064 /**
6065 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
6066 * @ipr_cmd: ipr command struct
6067 *
6068 * This utility function sends an inquiry to the adapter.
6069 *
6070 * Return value:
6071 * none
6072 **/
6073 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
6074 u32 dma_addr, u8 xfer_len)
6075 {
6076 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6077 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
6078
6079 ENTER;
6080 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6081 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6082
6083 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
6084 ioarcb->cmd_pkt.cdb[1] = flags;
6085 ioarcb->cmd_pkt.cdb[2] = page;
6086 ioarcb->cmd_pkt.cdb[4] = xfer_len;
6087
6088 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
6089 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
6090
6091 ioadl->address = cpu_to_be32(dma_addr);
6092 ioadl->flags_and_data_len =
6093 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
6094
6095 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6096 LEAVE;
6097 }
6098
6099 /**
6100 * ipr_inquiry_page_supported - Is the given inquiry page supported
6101 * @page0: inquiry page 0 buffer
6102 * @page: page code.
6103 *
6104 * This function determines if the specified inquiry page is supported.
6105 *
6106 * Return value:
6107 * 1 if page is supported / 0 if not
6108 **/
6109 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
6110 {
6111 int i;
6112
6113 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
6114 if (page0->page[i] == page)
6115 return 1;
6116
6117 return 0;
6118 }
6119
6120 /**
6121 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
6122 * @ipr_cmd: ipr command struct
6123 *
6124 * This function sends a Page 0xD0 inquiry to the adapter
6125 * to retrieve adapter capabilities.
6126 *
6127 * Return value:
6128 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6129 **/
6130 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
6131 {
6132 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6133 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6134 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
6135
6136 ENTER;
6137 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
6138 memset(cap, 0, sizeof(*cap));
6139
6140 if (ipr_inquiry_page_supported(page0, 0xD0)) {
6141 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
6142 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
6143 sizeof(struct ipr_inquiry_cap));
6144 return IPR_RC_JOB_RETURN;
6145 }
6146
6147 LEAVE;
6148 return IPR_RC_JOB_CONTINUE;
6149 }
6150
6151 /**
6152 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
6153 * @ipr_cmd: ipr command struct
6154 *
6155 * This function sends a Page 3 inquiry to the adapter
6156 * to retrieve software VPD information.
6157 *
6158 * Return value:
6159 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6160 **/
6161 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
6162 {
6163 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6164 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
6165
6166 ENTER;
6167
6168 if (!ipr_inquiry_page_supported(page0, 1))
6169 ioa_cfg->cache_state = CACHE_NONE;
6170
6171 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
6172
6173 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
6174 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
6175 sizeof(struct ipr_inquiry_page3));
6176
6177 LEAVE;
6178 return IPR_RC_JOB_RETURN;
6179 }
6180
6181 /**
6182 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
6183 * @ipr_cmd: ipr command struct
6184 *
6185 * This function sends a Page 0 inquiry to the adapter
6186 * to retrieve supported inquiry pages.
6187 *
6188 * Return value:
6189 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6190 **/
6191 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
6192 {
6193 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6194 char type[5];
6195
6196 ENTER;
6197
6198 /* Grab the type out of the VPD and store it away */
6199 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
6200 type[4] = '\0';
6201 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
6202
6203 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6204
6205 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6206 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6207 sizeof(struct ipr_inquiry_page0));
6208
6209 LEAVE;
6210 return IPR_RC_JOB_RETURN;
6211 }
6212
6213 /**
6214 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6215 * @ipr_cmd: ipr command struct
6216 *
6217 * This function sends a standard inquiry to the adapter.
6218 *
6219 * Return value:
6220 * IPR_RC_JOB_RETURN
6221 **/
6222 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6223 {
6224 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6225
6226 ENTER;
6227 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6228
6229 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6230 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6231 sizeof(struct ipr_ioa_vpd));
6232
6233 LEAVE;
6234 return IPR_RC_JOB_RETURN;
6235 }
6236
6237 /**
6238 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6239 * @ipr_cmd: ipr command struct
6240 *
6241 * This function send an Identify Host Request Response Queue
6242 * command to establish the HRRQ with the adapter.
6243 *
6244 * Return value:
6245 * IPR_RC_JOB_RETURN
6246 **/
6247 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6248 {
6249 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6250 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6251
6252 ENTER;
6253 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6254
6255 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6256 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6257
6258 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6259 ioarcb->cmd_pkt.cdb[2] =
6260 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6261 ioarcb->cmd_pkt.cdb[3] =
6262 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6263 ioarcb->cmd_pkt.cdb[4] =
6264 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6265 ioarcb->cmd_pkt.cdb[5] =
6266 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6267 ioarcb->cmd_pkt.cdb[7] =
6268 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6269 ioarcb->cmd_pkt.cdb[8] =
6270 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6271
6272 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6273
6274 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6275
6276 LEAVE;
6277 return IPR_RC_JOB_RETURN;
6278 }
6279
6280 /**
6281 * ipr_reset_timer_done - Adapter reset timer function
6282 * @ipr_cmd: ipr command struct
6283 *
6284 * Description: This function is used in adapter reset processing
6285 * for timing events. If the reset_cmd pointer in the IOA
6286 * config struct is not this adapter's we are doing nested
6287 * resets and fail_all_ops will take care of freeing the
6288 * command block.
6289 *
6290 * Return value:
6291 * none
6292 **/
6293 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6294 {
6295 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6296 unsigned long lock_flags = 0;
6297
6298 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6299
6300 if (ioa_cfg->reset_cmd == ipr_cmd) {
6301 list_del(&ipr_cmd->queue);
6302 ipr_cmd->done(ipr_cmd);
6303 }
6304
6305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6306 }
6307
6308 /**
6309 * ipr_reset_start_timer - Start a timer for adapter reset job
6310 * @ipr_cmd: ipr command struct
6311 * @timeout: timeout value
6312 *
6313 * Description: This function is used in adapter reset processing
6314 * for timing events. If the reset_cmd pointer in the IOA
6315 * config struct is not this adapter's we are doing nested
6316 * resets and fail_all_ops will take care of freeing the
6317 * command block.
6318 *
6319 * Return value:
6320 * none
6321 **/
6322 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6323 unsigned long timeout)
6324 {
6325 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6326 ipr_cmd->done = ipr_reset_ioa_job;
6327
6328 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6329 ipr_cmd->timer.expires = jiffies + timeout;
6330 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6331 add_timer(&ipr_cmd->timer);
6332 }
6333
6334 /**
6335 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6336 * @ioa_cfg: ioa cfg struct
6337 *
6338 * Return value:
6339 * nothing
6340 **/
6341 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6342 {
6343 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6344
6345 /* Initialize Host RRQ pointers */
6346 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6347 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6348 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6349 ioa_cfg->toggle_bit = 1;
6350
6351 /* Zero out config table */
6352 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6353 }
6354
6355 /**
6356 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6357 * @ipr_cmd: ipr command struct
6358 *
6359 * This function reinitializes some control blocks and
6360 * enables destructive diagnostics on the adapter.
6361 *
6362 * Return value:
6363 * IPR_RC_JOB_RETURN
6364 **/
6365 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6366 {
6367 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6368 volatile u32 int_reg;
6369
6370 ENTER;
6371 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6372 ipr_init_ioa_mem(ioa_cfg);
6373
6374 ioa_cfg->allow_interrupts = 1;
6375 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6376
6377 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6378 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6379 ioa_cfg->regs.clr_interrupt_mask_reg);
6380 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6381 return IPR_RC_JOB_CONTINUE;
6382 }
6383
6384 /* Enable destructive diagnostics on IOA */
6385 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6386
6387 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6388 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6389
6390 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6391
6392 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6393 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
6394 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6395 ipr_cmd->done = ipr_reset_ioa_job;
6396 add_timer(&ipr_cmd->timer);
6397 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6398
6399 LEAVE;
6400 return IPR_RC_JOB_RETURN;
6401 }
6402
6403 /**
6404 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6405 * @ipr_cmd: ipr command struct
6406 *
6407 * This function is invoked when an adapter dump has run out
6408 * of processing time.
6409 *
6410 * Return value:
6411 * IPR_RC_JOB_CONTINUE
6412 **/
6413 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6414 {
6415 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6416
6417 if (ioa_cfg->sdt_state == GET_DUMP)
6418 ioa_cfg->sdt_state = ABORT_DUMP;
6419
6420 ipr_cmd->job_step = ipr_reset_alert;
6421
6422 return IPR_RC_JOB_CONTINUE;
6423 }
6424
6425 /**
6426 * ipr_unit_check_no_data - Log a unit check/no data error log
6427 * @ioa_cfg: ioa config struct
6428 *
6429 * Logs an error indicating the adapter unit checked, but for some
6430 * reason, we were unable to fetch the unit check buffer.
6431 *
6432 * Return value:
6433 * nothing
6434 **/
6435 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6436 {
6437 ioa_cfg->errors_logged++;
6438 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6439 }
6440
6441 /**
6442 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6443 * @ioa_cfg: ioa config struct
6444 *
6445 * Fetches the unit check buffer from the adapter by clocking the data
6446 * through the mailbox register.
6447 *
6448 * Return value:
6449 * nothing
6450 **/
6451 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6452 {
6453 unsigned long mailbox;
6454 struct ipr_hostrcb *hostrcb;
6455 struct ipr_uc_sdt sdt;
6456 int rc, length;
6457 u32 ioasc;
6458
6459 mailbox = readl(ioa_cfg->ioa_mailbox);
6460
6461 if (!ipr_sdt_is_fmt2(mailbox)) {
6462 ipr_unit_check_no_data(ioa_cfg);
6463 return;
6464 }
6465
6466 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6467 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6468 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6469
6470 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6471 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6472 ipr_unit_check_no_data(ioa_cfg);
6473 return;
6474 }
6475
6476 /* Find length of the first sdt entry (UC buffer) */
6477 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6478 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6479
6480 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6481 struct ipr_hostrcb, queue);
6482 list_del(&hostrcb->queue);
6483 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6484
6485 rc = ipr_get_ldump_data_section(ioa_cfg,
6486 be32_to_cpu(sdt.entry[0].bar_str_offset),
6487 (__be32 *)&hostrcb->hcam,
6488 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6489
6490 if (!rc) {
6491 ipr_handle_log_data(ioa_cfg, hostrcb);
6492 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
6493 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
6494 ioa_cfg->sdt_state == GET_DUMP)
6495 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6496 } else
6497 ipr_unit_check_no_data(ioa_cfg);
6498
6499 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6500 }
6501
6502 /**
6503 * ipr_reset_restore_cfg_space - Restore PCI config space.
6504 * @ipr_cmd: ipr command struct
6505 *
6506 * Description: This function restores the saved PCI config space of
6507 * the adapter, fails all outstanding ops back to the callers, and
6508 * fetches the dump/unit check if applicable to this reset.
6509 *
6510 * Return value:
6511 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6512 **/
6513 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6514 {
6515 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6516 int rc;
6517
6518 ENTER;
6519 rc = pci_restore_state(ioa_cfg->pdev);
6520
6521 if (rc != PCIBIOS_SUCCESSFUL) {
6522 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6523 return IPR_RC_JOB_CONTINUE;
6524 }
6525
6526 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6527 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6528 return IPR_RC_JOB_CONTINUE;
6529 }
6530
6531 ipr_fail_all_ops(ioa_cfg);
6532
6533 if (ioa_cfg->ioa_unit_checked) {
6534 ioa_cfg->ioa_unit_checked = 0;
6535 ipr_get_unit_check_buffer(ioa_cfg);
6536 ipr_cmd->job_step = ipr_reset_alert;
6537 ipr_reset_start_timer(ipr_cmd, 0);
6538 return IPR_RC_JOB_RETURN;
6539 }
6540
6541 if (ioa_cfg->in_ioa_bringdown) {
6542 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6543 } else {
6544 ipr_cmd->job_step = ipr_reset_enable_ioa;
6545
6546 if (GET_DUMP == ioa_cfg->sdt_state) {
6547 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6548 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6549 schedule_work(&ioa_cfg->work_q);
6550 return IPR_RC_JOB_RETURN;
6551 }
6552 }
6553
6554 ENTER;
6555 return IPR_RC_JOB_CONTINUE;
6556 }
6557
6558 /**
6559 * ipr_reset_bist_done - BIST has completed on the adapter.
6560 * @ipr_cmd: ipr command struct
6561 *
6562 * Description: Unblock config space and resume the reset process.
6563 *
6564 * Return value:
6565 * IPR_RC_JOB_CONTINUE
6566 **/
6567 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6568 {
6569 ENTER;
6570 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6571 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6572 LEAVE;
6573 return IPR_RC_JOB_CONTINUE;
6574 }
6575
6576 /**
6577 * ipr_reset_start_bist - Run BIST on the adapter.
6578 * @ipr_cmd: ipr command struct
6579 *
6580 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6581 *
6582 * Return value:
6583 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6584 **/
6585 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6586 {
6587 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6588 int rc;
6589
6590 ENTER;
6591 pci_block_user_cfg_access(ioa_cfg->pdev);
6592 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6593
6594 if (rc != PCIBIOS_SUCCESSFUL) {
6595 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6596 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6597 rc = IPR_RC_JOB_CONTINUE;
6598 } else {
6599 ipr_cmd->job_step = ipr_reset_bist_done;
6600 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6601 rc = IPR_RC_JOB_RETURN;
6602 }
6603
6604 LEAVE;
6605 return rc;
6606 }
6607
6608 /**
6609 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
6610 * @ipr_cmd: ipr command struct
6611 *
6612 * Description: This clears PCI reset to the adapter and delays two seconds.
6613 *
6614 * Return value:
6615 * IPR_RC_JOB_RETURN
6616 **/
6617 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
6618 {
6619 ENTER;
6620 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
6621 ipr_cmd->job_step = ipr_reset_bist_done;
6622 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6623 LEAVE;
6624 return IPR_RC_JOB_RETURN;
6625 }
6626
6627 /**
6628 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
6629 * @ipr_cmd: ipr command struct
6630 *
6631 * Description: This asserts PCI reset to the adapter.
6632 *
6633 * Return value:
6634 * IPR_RC_JOB_RETURN
6635 **/
6636 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
6637 {
6638 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6639 struct pci_dev *pdev = ioa_cfg->pdev;
6640
6641 ENTER;
6642 pci_block_user_cfg_access(pdev);
6643 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
6644 ipr_cmd->job_step = ipr_reset_slot_reset_done;
6645 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
6646 LEAVE;
6647 return IPR_RC_JOB_RETURN;
6648 }
6649
6650 /**
6651 * ipr_reset_allowed - Query whether or not IOA can be reset
6652 * @ioa_cfg: ioa config struct
6653 *
6654 * Return value:
6655 * 0 if reset not allowed / non-zero if reset is allowed
6656 **/
6657 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6658 {
6659 volatile u32 temp_reg;
6660
6661 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6662 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6663 }
6664
6665 /**
6666 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6667 * @ipr_cmd: ipr command struct
6668 *
6669 * Description: This function waits for adapter permission to run BIST,
6670 * then runs BIST. If the adapter does not give permission after a
6671 * reasonable time, we will reset the adapter anyway. The impact of
6672 * resetting the adapter without warning the adapter is the risk of
6673 * losing the persistent error log on the adapter. If the adapter is
6674 * reset while it is writing to the flash on the adapter, the flash
6675 * segment will have bad ECC and be zeroed.
6676 *
6677 * Return value:
6678 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6679 **/
6680 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6681 {
6682 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6683 int rc = IPR_RC_JOB_RETURN;
6684
6685 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6686 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6687 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6688 } else {
6689 ipr_cmd->job_step = ioa_cfg->reset;
6690 rc = IPR_RC_JOB_CONTINUE;
6691 }
6692
6693 return rc;
6694 }
6695
6696 /**
6697 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6698 * @ipr_cmd: ipr command struct
6699 *
6700 * Description: This function alerts the adapter that it will be reset.
6701 * If memory space is not currently enabled, proceed directly
6702 * to running BIST on the adapter. The timer must always be started
6703 * so we guarantee we do not run BIST from ipr_isr.
6704 *
6705 * Return value:
6706 * IPR_RC_JOB_RETURN
6707 **/
6708 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6709 {
6710 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6711 u16 cmd_reg;
6712 int rc;
6713
6714 ENTER;
6715 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6716
6717 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6718 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6719 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6720 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6721 } else {
6722 ipr_cmd->job_step = ioa_cfg->reset;
6723 }
6724
6725 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6726 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6727
6728 LEAVE;
6729 return IPR_RC_JOB_RETURN;
6730 }
6731
6732 /**
6733 * ipr_reset_ucode_download_done - Microcode download completion
6734 * @ipr_cmd: ipr command struct
6735 *
6736 * Description: This function unmaps the microcode download buffer.
6737 *
6738 * Return value:
6739 * IPR_RC_JOB_CONTINUE
6740 **/
6741 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6742 {
6743 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6744 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6745
6746 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6747 sglist->num_sg, DMA_TO_DEVICE);
6748
6749 ipr_cmd->job_step = ipr_reset_alert;
6750 return IPR_RC_JOB_CONTINUE;
6751 }
6752
6753 /**
6754 * ipr_reset_ucode_download - Download microcode to the adapter
6755 * @ipr_cmd: ipr command struct
6756 *
6757 * Description: This function checks to see if it there is microcode
6758 * to download to the adapter. If there is, a download is performed.
6759 *
6760 * Return value:
6761 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6762 **/
6763 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6764 {
6765 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6766 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6767
6768 ENTER;
6769 ipr_cmd->job_step = ipr_reset_alert;
6770
6771 if (!sglist)
6772 return IPR_RC_JOB_CONTINUE;
6773
6774 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6775 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6776 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6777 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6778 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6779 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6780 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6781
6782 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6783 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6784
6785 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6786 IPR_WRITE_BUFFER_TIMEOUT);
6787
6788 LEAVE;
6789 return IPR_RC_JOB_RETURN;
6790 }
6791
6792 /**
6793 * ipr_reset_shutdown_ioa - Shutdown the adapter
6794 * @ipr_cmd: ipr command struct
6795 *
6796 * Description: This function issues an adapter shutdown of the
6797 * specified type to the specified adapter as part of the
6798 * adapter reset job.
6799 *
6800 * Return value:
6801 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6802 **/
6803 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6804 {
6805 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6806 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6807 unsigned long timeout;
6808 int rc = IPR_RC_JOB_CONTINUE;
6809
6810 ENTER;
6811 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6812 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6813 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6814 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6815 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6816
6817 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
6818 timeout = IPR_SHUTDOWN_TIMEOUT;
6819 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6820 timeout = IPR_INTERNAL_TIMEOUT;
6821 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
6822 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
6823 else
6824 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6825
6826 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6827
6828 rc = IPR_RC_JOB_RETURN;
6829 ipr_cmd->job_step = ipr_reset_ucode_download;
6830 } else
6831 ipr_cmd->job_step = ipr_reset_alert;
6832
6833 LEAVE;
6834 return rc;
6835 }
6836
6837 /**
6838 * ipr_reset_ioa_job - Adapter reset job
6839 * @ipr_cmd: ipr command struct
6840 *
6841 * Description: This function is the job router for the adapter reset job.
6842 *
6843 * Return value:
6844 * none
6845 **/
6846 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6847 {
6848 u32 rc, ioasc;
6849 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6850
6851 do {
6852 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6853
6854 if (ioa_cfg->reset_cmd != ipr_cmd) {
6855 /*
6856 * We are doing nested adapter resets and this is
6857 * not the current reset job.
6858 */
6859 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6860 return;
6861 }
6862
6863 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6864 rc = ipr_cmd->job_step_failed(ipr_cmd);
6865 if (rc == IPR_RC_JOB_RETURN)
6866 return;
6867 }
6868
6869 ipr_reinit_ipr_cmnd(ipr_cmd);
6870 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6871 rc = ipr_cmd->job_step(ipr_cmd);
6872 } while(rc == IPR_RC_JOB_CONTINUE);
6873 }
6874
6875 /**
6876 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6877 * @ioa_cfg: ioa config struct
6878 * @job_step: first job step of reset job
6879 * @shutdown_type: shutdown type
6880 *
6881 * Description: This function will initiate the reset of the given adapter
6882 * starting at the selected job step.
6883 * If the caller needs to wait on the completion of the reset,
6884 * the caller must sleep on the reset_wait_q.
6885 *
6886 * Return value:
6887 * none
6888 **/
6889 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6890 int (*job_step) (struct ipr_cmnd *),
6891 enum ipr_shutdown_type shutdown_type)
6892 {
6893 struct ipr_cmnd *ipr_cmd;
6894
6895 ioa_cfg->in_reset_reload = 1;
6896 ioa_cfg->allow_cmds = 0;
6897 scsi_block_requests(ioa_cfg->host);
6898
6899 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6900 ioa_cfg->reset_cmd = ipr_cmd;
6901 ipr_cmd->job_step = job_step;
6902 ipr_cmd->u.shutdown_type = shutdown_type;
6903
6904 ipr_reset_ioa_job(ipr_cmd);
6905 }
6906
6907 /**
6908 * ipr_initiate_ioa_reset - Initiate an adapter reset
6909 * @ioa_cfg: ioa config struct
6910 * @shutdown_type: shutdown type
6911 *
6912 * Description: This function will initiate the reset of the given adapter.
6913 * If the caller needs to wait on the completion of the reset,
6914 * the caller must sleep on the reset_wait_q.
6915 *
6916 * Return value:
6917 * none
6918 **/
6919 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6920 enum ipr_shutdown_type shutdown_type)
6921 {
6922 if (ioa_cfg->ioa_is_dead)
6923 return;
6924
6925 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6926 ioa_cfg->sdt_state = ABORT_DUMP;
6927
6928 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6929 dev_err(&ioa_cfg->pdev->dev,
6930 "IOA taken offline - error recovery failed\n");
6931
6932 ioa_cfg->reset_retries = 0;
6933 ioa_cfg->ioa_is_dead = 1;
6934
6935 if (ioa_cfg->in_ioa_bringdown) {
6936 ioa_cfg->reset_cmd = NULL;
6937 ioa_cfg->in_reset_reload = 0;
6938 ipr_fail_all_ops(ioa_cfg);
6939 wake_up_all(&ioa_cfg->reset_wait_q);
6940
6941 spin_unlock_irq(ioa_cfg->host->host_lock);
6942 scsi_unblock_requests(ioa_cfg->host);
6943 spin_lock_irq(ioa_cfg->host->host_lock);
6944 return;
6945 } else {
6946 ioa_cfg->in_ioa_bringdown = 1;
6947 shutdown_type = IPR_SHUTDOWN_NONE;
6948 }
6949 }
6950
6951 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6952 shutdown_type);
6953 }
6954
6955 /**
6956 * ipr_reset_freeze - Hold off all I/O activity
6957 * @ipr_cmd: ipr command struct
6958 *
6959 * Description: If the PCI slot is frozen, hold off all I/O
6960 * activity; then, as soon as the slot is available again,
6961 * initiate an adapter reset.
6962 */
6963 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6964 {
6965 /* Disallow new interrupts, avoid loop */
6966 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6967 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6968 ipr_cmd->done = ipr_reset_ioa_job;
6969 return IPR_RC_JOB_RETURN;
6970 }
6971
6972 /**
6973 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6974 * @pdev: PCI device struct
6975 *
6976 * Description: This routine is called to tell us that the PCI bus
6977 * is down. Can't do anything here, except put the device driver
6978 * into a holding pattern, waiting for the PCI bus to come back.
6979 */
6980 static void ipr_pci_frozen(struct pci_dev *pdev)
6981 {
6982 unsigned long flags = 0;
6983 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6984
6985 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6986 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6988 }
6989
6990 /**
6991 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6992 * @pdev: PCI device struct
6993 *
6994 * Description: This routine is called by the pci error recovery
6995 * code after the PCI slot has been reset, just before we
6996 * should resume normal operations.
6997 */
6998 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6999 {
7000 unsigned long flags = 0;
7001 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7002
7003 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7004 if (ioa_cfg->needs_warm_reset)
7005 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7006 else
7007 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
7008 IPR_SHUTDOWN_NONE);
7009 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7010 return PCI_ERS_RESULT_RECOVERED;
7011 }
7012
7013 /**
7014 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
7015 * @pdev: PCI device struct
7016 *
7017 * Description: This routine is called when the PCI bus has
7018 * permanently failed.
7019 */
7020 static void ipr_pci_perm_failure(struct pci_dev *pdev)
7021 {
7022 unsigned long flags = 0;
7023 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7024
7025 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
7026 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7027 ioa_cfg->sdt_state = ABORT_DUMP;
7028 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
7029 ioa_cfg->in_ioa_bringdown = 1;
7030 ioa_cfg->allow_cmds = 0;
7031 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7032 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
7033 }
7034
7035 /**
7036 * ipr_pci_error_detected - Called when a PCI error is detected.
7037 * @pdev: PCI device struct
7038 * @state: PCI channel state
7039 *
7040 * Description: Called when a PCI error is detected.
7041 *
7042 * Return value:
7043 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
7044 */
7045 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
7046 pci_channel_state_t state)
7047 {
7048 switch (state) {
7049 case pci_channel_io_frozen:
7050 ipr_pci_frozen(pdev);
7051 return PCI_ERS_RESULT_NEED_RESET;
7052 case pci_channel_io_perm_failure:
7053 ipr_pci_perm_failure(pdev);
7054 return PCI_ERS_RESULT_DISCONNECT;
7055 break;
7056 default:
7057 break;
7058 }
7059 return PCI_ERS_RESULT_NEED_RESET;
7060 }
7061
7062 /**
7063 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
7064 * @ioa_cfg: ioa cfg struct
7065 *
7066 * Description: This is the second phase of adapter intialization
7067 * This function takes care of initilizing the adapter to the point
7068 * where it can accept new commands.
7069
7070 * Return value:
7071 * 0 on success / -EIO on failure
7072 **/
7073 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
7074 {
7075 int rc = 0;
7076 unsigned long host_lock_flags = 0;
7077
7078 ENTER;
7079 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7080 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
7081 if (ioa_cfg->needs_hard_reset) {
7082 ioa_cfg->needs_hard_reset = 0;
7083 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7084 } else
7085 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
7086 IPR_SHUTDOWN_NONE);
7087
7088 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7089 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7090 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7091
7092 if (ioa_cfg->ioa_is_dead) {
7093 rc = -EIO;
7094 } else if (ipr_invalid_adapter(ioa_cfg)) {
7095 if (!ipr_testmode)
7096 rc = -EIO;
7097
7098 dev_err(&ioa_cfg->pdev->dev,
7099 "Adapter not supported in this hardware configuration.\n");
7100 }
7101
7102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7103
7104 LEAVE;
7105 return rc;
7106 }
7107
7108 /**
7109 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
7110 * @ioa_cfg: ioa config struct
7111 *
7112 * Return value:
7113 * none
7114 **/
7115 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7116 {
7117 int i;
7118
7119 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7120 if (ioa_cfg->ipr_cmnd_list[i])
7121 pci_pool_free(ioa_cfg->ipr_cmd_pool,
7122 ioa_cfg->ipr_cmnd_list[i],
7123 ioa_cfg->ipr_cmnd_list_dma[i]);
7124
7125 ioa_cfg->ipr_cmnd_list[i] = NULL;
7126 }
7127
7128 if (ioa_cfg->ipr_cmd_pool)
7129 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
7130
7131 ioa_cfg->ipr_cmd_pool = NULL;
7132 }
7133
7134 /**
7135 * ipr_free_mem - Frees memory allocated for an adapter
7136 * @ioa_cfg: ioa cfg struct
7137 *
7138 * Return value:
7139 * nothing
7140 **/
7141 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
7142 {
7143 int i;
7144
7145 kfree(ioa_cfg->res_entries);
7146 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
7147 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7148 ipr_free_cmd_blks(ioa_cfg);
7149 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7150 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7151 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
7152 ioa_cfg->cfg_table,
7153 ioa_cfg->cfg_table_dma);
7154
7155 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7156 pci_free_consistent(ioa_cfg->pdev,
7157 sizeof(struct ipr_hostrcb),
7158 ioa_cfg->hostrcb[i],
7159 ioa_cfg->hostrcb_dma[i]);
7160 }
7161
7162 ipr_free_dump(ioa_cfg);
7163 kfree(ioa_cfg->trace);
7164 }
7165
7166 /**
7167 * ipr_free_all_resources - Free all allocated resources for an adapter.
7168 * @ipr_cmd: ipr command struct
7169 *
7170 * This function frees all allocated resources for the
7171 * specified adapter.
7172 *
7173 * Return value:
7174 * none
7175 **/
7176 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
7177 {
7178 struct pci_dev *pdev = ioa_cfg->pdev;
7179
7180 ENTER;
7181 free_irq(pdev->irq, ioa_cfg);
7182 pci_disable_msi(pdev);
7183 iounmap(ioa_cfg->hdw_dma_regs);
7184 pci_release_regions(pdev);
7185 ipr_free_mem(ioa_cfg);
7186 scsi_host_put(ioa_cfg->host);
7187 pci_disable_device(pdev);
7188 LEAVE;
7189 }
7190
7191 /**
7192 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
7193 * @ioa_cfg: ioa config struct
7194 *
7195 * Return value:
7196 * 0 on success / -ENOMEM on allocation failure
7197 **/
7198 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
7199 {
7200 struct ipr_cmnd *ipr_cmd;
7201 struct ipr_ioarcb *ioarcb;
7202 dma_addr_t dma_addr;
7203 int i;
7204
7205 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
7206 sizeof(struct ipr_cmnd), 8, 0);
7207
7208 if (!ioa_cfg->ipr_cmd_pool)
7209 return -ENOMEM;
7210
7211 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
7212 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
7213
7214 if (!ipr_cmd) {
7215 ipr_free_cmd_blks(ioa_cfg);
7216 return -ENOMEM;
7217 }
7218
7219 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
7220 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
7221 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
7222
7223 ioarcb = &ipr_cmd->ioarcb;
7224 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
7225 ioarcb->host_response_handle = cpu_to_be32(i << 2);
7226 ioarcb->write_ioadl_addr =
7227 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
7228 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
7229 ioarcb->ioasa_host_pci_addr =
7230 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
7231 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
7232 ipr_cmd->cmd_index = i;
7233 ipr_cmd->ioa_cfg = ioa_cfg;
7234 ipr_cmd->sense_buffer_dma = dma_addr +
7235 offsetof(struct ipr_cmnd, sense_buffer);
7236
7237 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
7238 }
7239
7240 return 0;
7241 }
7242
7243 /**
7244 * ipr_alloc_mem - Allocate memory for an adapter
7245 * @ioa_cfg: ioa config struct
7246 *
7247 * Return value:
7248 * 0 on success / non-zero for error
7249 **/
7250 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
7251 {
7252 struct pci_dev *pdev = ioa_cfg->pdev;
7253 int i, rc = -ENOMEM;
7254
7255 ENTER;
7256 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
7257 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7258
7259 if (!ioa_cfg->res_entries)
7260 goto out;
7261
7262 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7263 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7264
7265 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7266 sizeof(struct ipr_misc_cbs),
7267 &ioa_cfg->vpd_cbs_dma);
7268
7269 if (!ioa_cfg->vpd_cbs)
7270 goto out_free_res_entries;
7271
7272 if (ipr_alloc_cmd_blks(ioa_cfg))
7273 goto out_free_vpd_cbs;
7274
7275 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7276 sizeof(u32) * IPR_NUM_CMD_BLKS,
7277 &ioa_cfg->host_rrq_dma);
7278
7279 if (!ioa_cfg->host_rrq)
7280 goto out_ipr_free_cmd_blocks;
7281
7282 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7283 sizeof(struct ipr_config_table),
7284 &ioa_cfg->cfg_table_dma);
7285
7286 if (!ioa_cfg->cfg_table)
7287 goto out_free_host_rrq;
7288
7289 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7290 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7291 sizeof(struct ipr_hostrcb),
7292 &ioa_cfg->hostrcb_dma[i]);
7293
7294 if (!ioa_cfg->hostrcb[i])
7295 goto out_free_hostrcb_dma;
7296
7297 ioa_cfg->hostrcb[i]->hostrcb_dma =
7298 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7299 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7300 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7301 }
7302
7303 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7304 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7305
7306 if (!ioa_cfg->trace)
7307 goto out_free_hostrcb_dma;
7308
7309 rc = 0;
7310 out:
7311 LEAVE;
7312 return rc;
7313
7314 out_free_hostrcb_dma:
7315 while (i-- > 0) {
7316 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7317 ioa_cfg->hostrcb[i],
7318 ioa_cfg->hostrcb_dma[i]);
7319 }
7320 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7321 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7322 out_free_host_rrq:
7323 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7324 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7325 out_ipr_free_cmd_blocks:
7326 ipr_free_cmd_blks(ioa_cfg);
7327 out_free_vpd_cbs:
7328 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7329 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7330 out_free_res_entries:
7331 kfree(ioa_cfg->res_entries);
7332 goto out;
7333 }
7334
7335 /**
7336 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7337 * @ioa_cfg: ioa config struct
7338 *
7339 * Return value:
7340 * none
7341 **/
7342 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7343 {
7344 int i;
7345
7346 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7347 ioa_cfg->bus_attr[i].bus = i;
7348 ioa_cfg->bus_attr[i].qas_enabled = 0;
7349 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7350 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7351 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7352 else
7353 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7354 }
7355 }
7356
7357 /**
7358 * ipr_init_ioa_cfg - Initialize IOA config struct
7359 * @ioa_cfg: ioa config struct
7360 * @host: scsi host struct
7361 * @pdev: PCI dev struct
7362 *
7363 * Return value:
7364 * none
7365 **/
7366 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7367 struct Scsi_Host *host, struct pci_dev *pdev)
7368 {
7369 const struct ipr_interrupt_offsets *p;
7370 struct ipr_interrupts *t;
7371 void __iomem *base;
7372
7373 ioa_cfg->host = host;
7374 ioa_cfg->pdev = pdev;
7375 ioa_cfg->log_level = ipr_log_level;
7376 ioa_cfg->doorbell = IPR_DOORBELL;
7377 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7378 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7379 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7380 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7381 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7382 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7383 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7384 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7385
7386 INIT_LIST_HEAD(&ioa_cfg->free_q);
7387 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7388 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7389 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7390 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7391 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7392 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7393 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7394 init_waitqueue_head(&ioa_cfg->msi_wait_q);
7395 ioa_cfg->sdt_state = INACTIVE;
7396 if (ipr_enable_cache)
7397 ioa_cfg->cache_state = CACHE_ENABLED;
7398 else
7399 ioa_cfg->cache_state = CACHE_DISABLED;
7400
7401 ipr_initialize_bus_attr(ioa_cfg);
7402
7403 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7404 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7405 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7406 host->unique_id = host->host_no;
7407 host->max_cmd_len = IPR_MAX_CDB_LEN;
7408 pci_set_drvdata(pdev, ioa_cfg);
7409
7410 p = &ioa_cfg->chip_cfg->regs;
7411 t = &ioa_cfg->regs;
7412 base = ioa_cfg->hdw_dma_regs;
7413
7414 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7415 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7416 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7417 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7418 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7419 t->ioarrin_reg = base + p->ioarrin_reg;
7420 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7421 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7422 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7423 }
7424
7425 /**
7426 * ipr_get_chip_info - Find adapter chip information
7427 * @dev_id: PCI device id struct
7428 *
7429 * Return value:
7430 * ptr to chip information on success / NULL on failure
7431 **/
7432 static const struct ipr_chip_t * __devinit
7433 ipr_get_chip_info(const struct pci_device_id *dev_id)
7434 {
7435 int i;
7436
7437 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7438 if (ipr_chip[i].vendor == dev_id->vendor &&
7439 ipr_chip[i].device == dev_id->device)
7440 return &ipr_chip[i];
7441 return NULL;
7442 }
7443
7444 /**
7445 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
7446 * @pdev: PCI device struct
7447 *
7448 * Description: Simply set the msi_received flag to 1 indicating that
7449 * Message Signaled Interrupts are supported.
7450 *
7451 * Return value:
7452 * 0 on success / non-zero on failure
7453 **/
7454 static irqreturn_t __devinit ipr_test_intr(int irq, void *devp)
7455 {
7456 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
7457 unsigned long lock_flags = 0;
7458 irqreturn_t rc = IRQ_HANDLED;
7459
7460 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7461
7462 ioa_cfg->msi_received = 1;
7463 wake_up(&ioa_cfg->msi_wait_q);
7464
7465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7466 return rc;
7467 }
7468
7469 /**
7470 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
7471 * @pdev: PCI device struct
7472 *
7473 * Description: The return value from pci_enable_msi() can not always be
7474 * trusted. This routine sets up and initiates a test interrupt to determine
7475 * if the interrupt is received via the ipr_test_intr() service routine.
7476 * If the tests fails, the driver will fall back to LSI.
7477 *
7478 * Return value:
7479 * 0 on success / non-zero on failure
7480 **/
7481 static int __devinit ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg,
7482 struct pci_dev *pdev)
7483 {
7484 int rc;
7485 volatile u32 int_reg;
7486 unsigned long lock_flags = 0;
7487
7488 ENTER;
7489
7490 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7491 init_waitqueue_head(&ioa_cfg->msi_wait_q);
7492 ioa_cfg->msi_received = 0;
7493 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7494 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg);
7495 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7496 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7497
7498 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
7499 if (rc) {
7500 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
7501 return rc;
7502 } else if (ipr_debug)
7503 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
7504
7505 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg);
7506 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
7507 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
7508 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7509
7510 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7511 if (!ioa_cfg->msi_received) {
7512 /* MSI test failed */
7513 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
7514 rc = -EOPNOTSUPP;
7515 } else if (ipr_debug)
7516 dev_info(&pdev->dev, "MSI test succeeded.\n");
7517
7518 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7519
7520 free_irq(pdev->irq, ioa_cfg);
7521
7522 LEAVE;
7523
7524 return rc;
7525 }
7526
7527 /**
7528 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7529 * @pdev: PCI device struct
7530 * @dev_id: PCI device id struct
7531 *
7532 * Return value:
7533 * 0 on success / non-zero on failure
7534 **/
7535 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7536 const struct pci_device_id *dev_id)
7537 {
7538 struct ipr_ioa_cfg *ioa_cfg;
7539 struct Scsi_Host *host;
7540 unsigned long ipr_regs_pci;
7541 void __iomem *ipr_regs;
7542 int rc = PCIBIOS_SUCCESSFUL;
7543 volatile u32 mask, uproc, interrupts;
7544
7545 ENTER;
7546
7547 if ((rc = pci_enable_device(pdev))) {
7548 dev_err(&pdev->dev, "Cannot enable adapter\n");
7549 goto out;
7550 }
7551
7552 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7553
7554 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7555
7556 if (!host) {
7557 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7558 rc = -ENOMEM;
7559 goto out_disable;
7560 }
7561
7562 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7563 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7564 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7565 sata_port_info.flags, &ipr_sata_ops);
7566
7567 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
7568
7569 if (!ioa_cfg->ipr_chip) {
7570 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7571 dev_id->vendor, dev_id->device);
7572 goto out_scsi_host_put;
7573 }
7574
7575 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
7576
7577 if (ipr_transop_timeout)
7578 ioa_cfg->transop_timeout = ipr_transop_timeout;
7579 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
7580 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
7581 else
7582 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
7583
7584 ioa_cfg->revid = pdev->revision;
7585
7586 ipr_regs_pci = pci_resource_start(pdev, 0);
7587
7588 rc = pci_request_regions(pdev, IPR_NAME);
7589 if (rc < 0) {
7590 dev_err(&pdev->dev,
7591 "Couldn't register memory range of registers\n");
7592 goto out_scsi_host_put;
7593 }
7594
7595 ipr_regs = pci_ioremap_bar(pdev, 0);
7596
7597 if (!ipr_regs) {
7598 dev_err(&pdev->dev,
7599 "Couldn't map memory range of registers\n");
7600 rc = -ENOMEM;
7601 goto out_release_regions;
7602 }
7603
7604 ioa_cfg->hdw_dma_regs = ipr_regs;
7605 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7606 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7607
7608 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7609
7610 pci_set_master(pdev);
7611
7612 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
7613 if (rc < 0) {
7614 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7615 goto cleanup_nomem;
7616 }
7617
7618 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7619 ioa_cfg->chip_cfg->cache_line_size);
7620
7621 if (rc != PCIBIOS_SUCCESSFUL) {
7622 dev_err(&pdev->dev, "Write of cache line size failed\n");
7623 rc = -EIO;
7624 goto cleanup_nomem;
7625 }
7626
7627 /* Enable MSI style interrupts if they are supported. */
7628 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI && !pci_enable_msi(pdev)) {
7629 rc = ipr_test_msi(ioa_cfg, pdev);
7630 if (rc == -EOPNOTSUPP)
7631 pci_disable_msi(pdev);
7632 else if (rc)
7633 goto out_msi_disable;
7634 else
7635 dev_info(&pdev->dev, "MSI enabled with IRQ: %d\n", pdev->irq);
7636 } else if (ipr_debug)
7637 dev_info(&pdev->dev, "Cannot enable MSI.\n");
7638
7639 /* Save away PCI config space for use following IOA reset */
7640 rc = pci_save_state(pdev);
7641
7642 if (rc != PCIBIOS_SUCCESSFUL) {
7643 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7644 rc = -EIO;
7645 goto cleanup_nomem;
7646 }
7647
7648 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7649 goto cleanup_nomem;
7650
7651 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7652 goto cleanup_nomem;
7653
7654 rc = ipr_alloc_mem(ioa_cfg);
7655 if (rc < 0) {
7656 dev_err(&pdev->dev,
7657 "Couldn't allocate enough memory for device driver!\n");
7658 goto cleanup_nomem;
7659 }
7660
7661 /*
7662 * If HRRQ updated interrupt is not masked, or reset alert is set,
7663 * the card is in an unknown state and needs a hard reset
7664 */
7665 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7666 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
7667 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7668 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7669 ioa_cfg->needs_hard_reset = 1;
7670 if (interrupts & IPR_PCII_ERROR_INTERRUPTS)
7671 ioa_cfg->needs_hard_reset = 1;
7672 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
7673 ioa_cfg->ioa_unit_checked = 1;
7674
7675 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7676 rc = request_irq(pdev->irq, ipr_isr,
7677 ioa_cfg->msi_received ? 0 : IRQF_SHARED,
7678 IPR_NAME, ioa_cfg);
7679
7680 if (rc) {
7681 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7682 pdev->irq, rc);
7683 goto cleanup_nolog;
7684 }
7685
7686 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
7687 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
7688 ioa_cfg->needs_warm_reset = 1;
7689 ioa_cfg->reset = ipr_reset_slot_reset;
7690 } else
7691 ioa_cfg->reset = ipr_reset_start_bist;
7692
7693 spin_lock(&ipr_driver_lock);
7694 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7695 spin_unlock(&ipr_driver_lock);
7696
7697 LEAVE;
7698 out:
7699 return rc;
7700
7701 cleanup_nolog:
7702 ipr_free_mem(ioa_cfg);
7703 cleanup_nomem:
7704 iounmap(ipr_regs);
7705 out_msi_disable:
7706 pci_disable_msi(pdev);
7707 out_release_regions:
7708 pci_release_regions(pdev);
7709 out_scsi_host_put:
7710 scsi_host_put(host);
7711 out_disable:
7712 pci_disable_device(pdev);
7713 goto out;
7714 }
7715
7716 /**
7717 * ipr_scan_vsets - Scans for VSET devices
7718 * @ioa_cfg: ioa config struct
7719 *
7720 * Description: Since the VSET resources do not follow SAM in that we can have
7721 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7722 *
7723 * Return value:
7724 * none
7725 **/
7726 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7727 {
7728 int target, lun;
7729
7730 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7731 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7732 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7733 }
7734
7735 /**
7736 * ipr_initiate_ioa_bringdown - Bring down an adapter
7737 * @ioa_cfg: ioa config struct
7738 * @shutdown_type: shutdown type
7739 *
7740 * Description: This function will initiate bringing down the adapter.
7741 * This consists of issuing an IOA shutdown to the adapter
7742 * to flush the cache, and running BIST.
7743 * If the caller needs to wait on the completion of the reset,
7744 * the caller must sleep on the reset_wait_q.
7745 *
7746 * Return value:
7747 * none
7748 **/
7749 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7750 enum ipr_shutdown_type shutdown_type)
7751 {
7752 ENTER;
7753 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7754 ioa_cfg->sdt_state = ABORT_DUMP;
7755 ioa_cfg->reset_retries = 0;
7756 ioa_cfg->in_ioa_bringdown = 1;
7757 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7758 LEAVE;
7759 }
7760
7761 /**
7762 * __ipr_remove - Remove a single adapter
7763 * @pdev: pci device struct
7764 *
7765 * Adapter hot plug remove entry point.
7766 *
7767 * Return value:
7768 * none
7769 **/
7770 static void __ipr_remove(struct pci_dev *pdev)
7771 {
7772 unsigned long host_lock_flags = 0;
7773 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7774 ENTER;
7775
7776 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7777 while(ioa_cfg->in_reset_reload) {
7778 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7779 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7780 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7781 }
7782
7783 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7784
7785 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7786 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7787 flush_scheduled_work();
7788 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7789
7790 spin_lock(&ipr_driver_lock);
7791 list_del(&ioa_cfg->queue);
7792 spin_unlock(&ipr_driver_lock);
7793
7794 if (ioa_cfg->sdt_state == ABORT_DUMP)
7795 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7796 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7797
7798 ipr_free_all_resources(ioa_cfg);
7799
7800 LEAVE;
7801 }
7802
7803 /**
7804 * ipr_remove - IOA hot plug remove entry point
7805 * @pdev: pci device struct
7806 *
7807 * Adapter hot plug remove entry point.
7808 *
7809 * Return value:
7810 * none
7811 **/
7812 static void __devexit ipr_remove(struct pci_dev *pdev)
7813 {
7814 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7815
7816 ENTER;
7817
7818 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
7819 &ipr_trace_attr);
7820 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
7821 &ipr_dump_attr);
7822 scsi_remove_host(ioa_cfg->host);
7823
7824 __ipr_remove(pdev);
7825
7826 LEAVE;
7827 }
7828
7829 /**
7830 * ipr_probe - Adapter hot plug add entry point
7831 *
7832 * Return value:
7833 * 0 on success / non-zero on failure
7834 **/
7835 static int __devinit ipr_probe(struct pci_dev *pdev,
7836 const struct pci_device_id *dev_id)
7837 {
7838 struct ipr_ioa_cfg *ioa_cfg;
7839 int rc;
7840
7841 rc = ipr_probe_ioa(pdev, dev_id);
7842
7843 if (rc)
7844 return rc;
7845
7846 ioa_cfg = pci_get_drvdata(pdev);
7847 rc = ipr_probe_ioa_part2(ioa_cfg);
7848
7849 if (rc) {
7850 __ipr_remove(pdev);
7851 return rc;
7852 }
7853
7854 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7855
7856 if (rc) {
7857 __ipr_remove(pdev);
7858 return rc;
7859 }
7860
7861 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
7862 &ipr_trace_attr);
7863
7864 if (rc) {
7865 scsi_remove_host(ioa_cfg->host);
7866 __ipr_remove(pdev);
7867 return rc;
7868 }
7869
7870 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
7871 &ipr_dump_attr);
7872
7873 if (rc) {
7874 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
7875 &ipr_trace_attr);
7876 scsi_remove_host(ioa_cfg->host);
7877 __ipr_remove(pdev);
7878 return rc;
7879 }
7880
7881 scsi_scan_host(ioa_cfg->host);
7882 ipr_scan_vsets(ioa_cfg);
7883 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7884 ioa_cfg->allow_ml_add_del = 1;
7885 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7886 schedule_work(&ioa_cfg->work_q);
7887 return 0;
7888 }
7889
7890 /**
7891 * ipr_shutdown - Shutdown handler.
7892 * @pdev: pci device struct
7893 *
7894 * This function is invoked upon system shutdown/reboot. It will issue
7895 * an adapter shutdown to the adapter to flush the write cache.
7896 *
7897 * Return value:
7898 * none
7899 **/
7900 static void ipr_shutdown(struct pci_dev *pdev)
7901 {
7902 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7903 unsigned long lock_flags = 0;
7904
7905 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7906 while(ioa_cfg->in_reset_reload) {
7907 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7908 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7909 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7910 }
7911
7912 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7913 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7914 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7915 }
7916
7917 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7918 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7919 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7920 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7921 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7922 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7923 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7924 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7925 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7926 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7927 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7928 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7929 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7930 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7931 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7932 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7933 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
7934 IPR_USE_LONG_TRANSOP_TIMEOUT },
7935 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7936 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7937 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7938 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7939 IPR_USE_LONG_TRANSOP_TIMEOUT },
7940 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7941 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7942 IPR_USE_LONG_TRANSOP_TIMEOUT },
7943 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7944 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7945 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7946 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
7947 IPR_USE_LONG_TRANSOP_TIMEOUT},
7948 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7949 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
7950 IPR_USE_LONG_TRANSOP_TIMEOUT },
7951 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7952 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
7953 IPR_USE_LONG_TRANSOP_TIMEOUT },
7954 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7955 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575D, 0, 0,
7956 IPR_USE_LONG_TRANSOP_TIMEOUT },
7957 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7958 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
7959 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7960 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
7961 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
7962 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7963 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7964 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7965 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7966 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7967 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
7968 IPR_USE_LONG_TRANSOP_TIMEOUT },
7969 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7970 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
7971 IPR_USE_LONG_TRANSOP_TIMEOUT },
7972 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SCAMP_E,
7973 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0,
7974 IPR_USE_LONG_TRANSOP_TIMEOUT },
7975 { }
7976 };
7977 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7978
7979 static struct pci_error_handlers ipr_err_handler = {
7980 .error_detected = ipr_pci_error_detected,
7981 .slot_reset = ipr_pci_slot_reset,
7982 };
7983
7984 static struct pci_driver ipr_driver = {
7985 .name = IPR_NAME,
7986 .id_table = ipr_pci_table,
7987 .probe = ipr_probe,
7988 .remove = __devexit_p(ipr_remove),
7989 .shutdown = ipr_shutdown,
7990 .err_handler = &ipr_err_handler,
7991 };
7992
7993 /**
7994 * ipr_init - Module entry point
7995 *
7996 * Return value:
7997 * 0 on success / negative value on failure
7998 **/
7999 static int __init ipr_init(void)
8000 {
8001 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
8002 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
8003
8004 return pci_register_driver(&ipr_driver);
8005 }
8006
8007 /**
8008 * ipr_exit - Module unload
8009 *
8010 * Module unload entry point.
8011 *
8012 * Return value:
8013 * none
8014 **/
8015 static void __exit ipr_exit(void)
8016 {
8017 pci_unregister_driver(&ipr_driver);
8018 }
8019
8020 module_init(ipr_init);
8021 module_exit(ipr_exit);
Support for the Chinese Samsung S3C2440 based development boards