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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24/*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57#include <linux/config.h>
58#include <linux/fs.h>
59#include <linux/init.h>
60#include <linux/types.h>
61#include <linux/errno.h>
62#include <linux/kernel.h>
63#include <linux/ioport.h>
64#include <linux/delay.h>
65#include <linux/pci.h>
66#include <linux/wait.h>
67#include <linux/spinlock.h>
68#include <linux/sched.h>
69#include <linux/interrupt.h>
70#include <linux/blkdev.h>
71#include <linux/firmware.h>
72#include <linux/module.h>
73#include <linux/moduleparam.h>
74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/processor.h>
77#include <scsi/scsi.h>
78#include <scsi/scsi_host.h>
79#include <scsi/scsi_tcq.h>
80#include <scsi/scsi_eh.h>
81#include <scsi/scsi_cmnd.h>
82#include <scsi/scsi_request.h>
83#include "ipr.h"
84
85/*
86 * Global Data
87 */
88static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
93static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
brking@us.ibm.com62275042005-11-01 17:01:14 -060094static unsigned int ipr_enable_cache = 1;
brking@us.ibm.comd3c74872005-11-01 17:01:34 -060095static unsigned int ipr_debug = 0;
brking@us.ibm.com32d29772005-11-01 17:02:01 -060096static int ipr_auto_create = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -070097static DEFINE_SPINLOCK(ipr_driver_lock);
98
99/* This table describes the differences between DMA controller chips */
100static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
brking@us.ibm.com86f51432005-11-01 17:02:42 -0600101 { /* Gemstone, Citrine, and Obsidian */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 .mailbox = 0x0042C,
103 .cache_line_size = 0x20,
104 {
105 .set_interrupt_mask_reg = 0x0022C,
106 .clr_interrupt_mask_reg = 0x00230,
107 .sense_interrupt_mask_reg = 0x0022C,
108 .clr_interrupt_reg = 0x00228,
109 .sense_interrupt_reg = 0x00224,
110 .ioarrin_reg = 0x00404,
111 .sense_uproc_interrupt_reg = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .clr_uproc_interrupt_reg = 0x00218
114 }
115 },
116 { /* Snipe and Scamp */
117 .mailbox = 0x0052C,
118 .cache_line_size = 0x20,
119 {
120 .set_interrupt_mask_reg = 0x00288,
121 .clr_interrupt_mask_reg = 0x0028C,
122 .sense_interrupt_mask_reg = 0x00288,
123 .clr_interrupt_reg = 0x00284,
124 .sense_interrupt_reg = 0x00280,
125 .ioarrin_reg = 0x00504,
126 .sense_uproc_interrupt_reg = 0x00290,
127 .set_uproc_interrupt_reg = 0x00290,
128 .clr_uproc_interrupt_reg = 0x00294
129 }
130 },
131};
132
133static const struct ipr_chip_t ipr_chip[] = {
134 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
brking@us.ibm.com86f51432005-11-01 17:02:42 -0600136 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
140};
141
142static int ipr_max_bus_speeds [] = {
143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
144};
145
146MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
147MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
148module_param_named(max_speed, ipr_max_speed, uint, 0);
149MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
150module_param_named(log_level, ipr_log_level, uint, 0);
151MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
152module_param_named(testmode, ipr_testmode, int, 0);
153MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
154module_param_named(fastfail, ipr_fastfail, int, 0);
155MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
156module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
157MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
brking@us.ibm.com62275042005-11-01 17:01:14 -0600158module_param_named(enable_cache, ipr_enable_cache, int, 0);
159MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
brking@us.ibm.comd3c74872005-11-01 17:01:34 -0600160module_param_named(debug, ipr_debug, int, 0);
161MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
brking@us.ibm.com32d29772005-11-01 17:02:01 -0600162module_param_named(auto_create, ipr_auto_create, int, 0);
163MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164MODULE_LICENSE("GPL");
165MODULE_VERSION(IPR_DRIVER_VERSION);
166
167static const char *ipr_gpdd_dev_end_states[] = {
168 "Command complete",
169 "Terminated by host",
170 "Terminated by device reset",
171 "Terminated by bus reset",
172 "Unknown",
173 "Command not started"
174};
175
176static const char *ipr_gpdd_dev_bus_phases[] = {
177 "Bus free",
178 "Arbitration",
179 "Selection",
180 "Message out",
181 "Command",
182 "Message in",
183 "Data out",
184 "Data in",
185 "Status",
186 "Reselection",
187 "Unknown"
188};
189
190/* A constant array of IOASCs/URCs/Error Messages */
191static const
192struct ipr_error_table_t ipr_error_table[] = {
193 {0x00000000, 1, 1,
194 "8155: An unknown error was received"},
195 {0x00330000, 0, 0,
196 "Soft underlength error"},
197 {0x005A0000, 0, 0,
198 "Command to be cancelled not found"},
199 {0x00808000, 0, 0,
200 "Qualified success"},
201 {0x01080000, 1, 1,
202 "FFFE: Soft device bus error recovered by the IOA"},
203 {0x01170600, 0, 1,
204 "FFF9: Device sector reassign successful"},
205 {0x01170900, 0, 1,
206 "FFF7: Media error recovered by device rewrite procedures"},
207 {0x01180200, 0, 1,
208 "7001: IOA sector reassignment successful"},
209 {0x01180500, 0, 1,
210 "FFF9: Soft media error. Sector reassignment recommended"},
211 {0x01180600, 0, 1,
212 "FFF7: Media error recovered by IOA rewrite procedures"},
213 {0x01418000, 0, 1,
214 "FF3D: Soft PCI bus error recovered by the IOA"},
215 {0x01440000, 1, 1,
216 "FFF6: Device hardware error recovered by the IOA"},
217 {0x01448100, 0, 1,
218 "FFF6: Device hardware error recovered by the device"},
219 {0x01448200, 1, 1,
220 "FF3D: Soft IOA error recovered by the IOA"},
221 {0x01448300, 0, 1,
222 "FFFA: Undefined device response recovered by the IOA"},
223 {0x014A0000, 1, 1,
224 "FFF6: Device bus error, message or command phase"},
225 {0x015D0000, 0, 1,
226 "FFF6: Failure prediction threshold exceeded"},
227 {0x015D9200, 0, 1,
228 "8009: Impending cache battery pack failure"},
229 {0x02040400, 0, 0,
230 "34FF: Disk device format in progress"},
231 {0x023F0000, 0, 0,
232 "Synchronization required"},
233 {0x024E0000, 0, 0,
234 "No ready, IOA shutdown"},
235 {0x025A0000, 0, 0,
236 "Not ready, IOA has been shutdown"},
237 {0x02670100, 0, 1,
238 "3020: Storage subsystem configuration error"},
239 {0x03110B00, 0, 0,
240 "FFF5: Medium error, data unreadable, recommend reassign"},
241 {0x03110C00, 0, 0,
242 "7000: Medium error, data unreadable, do not reassign"},
243 {0x03310000, 0, 1,
244 "FFF3: Disk media format bad"},
245 {0x04050000, 0, 1,
246 "3002: Addressed device failed to respond to selection"},
247 {0x04080000, 1, 1,
248 "3100: Device bus error"},
249 {0x04080100, 0, 1,
250 "3109: IOA timed out a device command"},
251 {0x04088000, 0, 0,
252 "3120: SCSI bus is not operational"},
253 {0x04118000, 0, 1,
254 "9000: IOA reserved area data check"},
255 {0x04118100, 0, 1,
256 "9001: IOA reserved area invalid data pattern"},
257 {0x04118200, 0, 1,
258 "9002: IOA reserved area LRC error"},
259 {0x04320000, 0, 1,
260 "102E: Out of alternate sectors for disk storage"},
261 {0x04330000, 1, 1,
262 "FFF4: Data transfer underlength error"},
263 {0x04338000, 1, 1,
264 "FFF4: Data transfer overlength error"},
265 {0x043E0100, 0, 1,
266 "3400: Logical unit failure"},
267 {0x04408500, 0, 1,
268 "FFF4: Device microcode is corrupt"},
269 {0x04418000, 1, 1,
270 "8150: PCI bus error"},
271 {0x04430000, 1, 0,
272 "Unsupported device bus message received"},
273 {0x04440000, 1, 1,
274 "FFF4: Disk device problem"},
275 {0x04448200, 1, 1,
276 "8150: Permanent IOA failure"},
277 {0x04448300, 0, 1,
278 "3010: Disk device returned wrong response to IOA"},
279 {0x04448400, 0, 1,
280 "8151: IOA microcode error"},
281 {0x04448500, 0, 0,
282 "Device bus status error"},
283 {0x04448600, 0, 1,
284 "8157: IOA error requiring IOA reset to recover"},
285 {0x04490000, 0, 0,
286 "Message reject received from the device"},
287 {0x04449200, 0, 1,
288 "8008: A permanent cache battery pack failure occurred"},
289 {0x0444A000, 0, 1,
290 "9090: Disk unit has been modified after the last known status"},
291 {0x0444A200, 0, 1,
292 "9081: IOA detected device error"},
293 {0x0444A300, 0, 1,
294 "9082: IOA detected device error"},
295 {0x044A0000, 1, 1,
296 "3110: Device bus error, message or command phase"},
297 {0x04670400, 0, 1,
298 "9091: Incorrect hardware configuration change has been detected"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600299 {0x04678000, 0, 1,
300 "9073: Invalid multi-adapter configuration"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 {0x046E0000, 0, 1,
302 "FFF4: Command to logical unit failed"},
303 {0x05240000, 1, 0,
304 "Illegal request, invalid request type or request packet"},
305 {0x05250000, 0, 0,
306 "Illegal request, invalid resource handle"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600307 {0x05258000, 0, 0,
308 "Illegal request, commands not allowed to this device"},
309 {0x05258100, 0, 0,
310 "Illegal request, command not allowed to a secondary adapter"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 {0x05260000, 0, 0,
312 "Illegal request, invalid field in parameter list"},
313 {0x05260100, 0, 0,
314 "Illegal request, parameter not supported"},
315 {0x05260200, 0, 0,
316 "Illegal request, parameter value invalid"},
317 {0x052C0000, 0, 0,
318 "Illegal request, command sequence error"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600319 {0x052C8000, 1, 0,
320 "Illegal request, dual adapter support not enabled"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 {0x06040500, 0, 1,
322 "9031: Array protection temporarily suspended, protection resuming"},
323 {0x06040600, 0, 1,
324 "9040: Array protection temporarily suspended, protection resuming"},
325 {0x06290000, 0, 1,
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, 1,
332 "FFFB: SCSI bus was reset by another initiator"},
333 {0x063F0300, 0, 1,
334 "3029: A device replacement has occurred"},
335 {0x064C8000, 0, 1,
336 "9051: IOA cache data exists for a missing or failed device"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600337 {0x064C8100, 0, 1,
338 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 {0x06670100, 0, 1,
340 "9025: Disk unit is not supported at its physical location"},
341 {0x06670600, 0, 1,
342 "3020: IOA detected a SCSI bus configuration error"},
343 {0x06678000, 0, 1,
344 "3150: SCSI bus configuration error"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600345 {0x06678100, 0, 1,
346 "9074: Asymmetric advanced function disk configuration"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700347 {0x06690200, 0, 1,
348 "9041: Array protection temporarily suspended"},
349 {0x06698200, 0, 1,
350 "9042: Corrupt array parity detected on specified device"},
351 {0x066B0200, 0, 1,
352 "9030: Array no longer protected due to missing or failed disk unit"},
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -0600353 {0x066B8000, 0, 1,
354 "9071: Link operational transition"},
355 {0x066B8100, 0, 1,
356 "9072: Link not operational transition"},
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 {0x066B8200, 0, 1,
358 "9032: Array exposed but still protected"},
359 {0x07270000, 0, 0,
360 "Failure due to other device"},
361 {0x07278000, 0, 1,
362 "9008: IOA does not support functions expected by devices"},
363 {0x07278100, 0, 1,
364 "9010: Cache data associated with attached devices cannot be found"},
365 {0x07278200, 0, 1,
366 "9011: Cache data belongs to devices other than those attached"},
367 {0x07278400, 0, 1,
368 "9020: Array missing 2 or more devices with only 1 device present"},
369 {0x07278500, 0, 1,
370 "9021: Array missing 2 or more devices with 2 or more devices present"},
371 {0x07278600, 0, 1,
372 "9022: Exposed array is missing a required device"},
373 {0x07278700, 0, 1,
374 "9023: Array member(s) not at required physical locations"},
375 {0x07278800, 0, 1,
376 "9024: Array not functional due to present hardware configuration"},
377 {0x07278900, 0, 1,
378 "9026: Array not functional due to present hardware configuration"},
379 {0x07278A00, 0, 1,
380 "9027: Array is missing a device and parity is out of sync"},
381 {0x07278B00, 0, 1,
382 "9028: Maximum number of arrays already exist"},
383 {0x07278C00, 0, 1,
384 "9050: Required cache data cannot be located for a disk unit"},
385 {0x07278D00, 0, 1,
386 "9052: Cache data exists for a device that has been modified"},
387 {0x07278F00, 0, 1,
388 "9054: IOA resources not available due to previous problems"},
389 {0x07279100, 0, 1,
390 "9092: Disk unit requires initialization before use"},
391 {0x07279200, 0, 1,
392 "9029: Incorrect hardware configuration change has been detected"},
393 {0x07279600, 0, 1,
394 "9060: One or more disk pairs are missing from an array"},
395 {0x07279700, 0, 1,
396 "9061: One or more disks are missing from an array"},
397 {0x07279800, 0, 1,
398 "9062: One or more disks are missing from an array"},
399 {0x07279900, 0, 1,
400 "9063: Maximum number of functional arrays has been exceeded"},
401 {0x0B260000, 0, 0,
402 "Aborted command, invalid descriptor"},
403 {0x0B5A0000, 0, 0,
404 "Command terminated by host"}
405};
406
407static const struct ipr_ses_table_entry ipr_ses_table[] = {
408 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
409 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
410 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
411 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
412 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
413 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
414 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
415 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
416 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
417 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
418 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
419 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
420 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
421};
422
423/*
424 * Function Prototypes
425 */
426static int ipr_reset_alert(struct ipr_cmnd *);
427static void ipr_process_ccn(struct ipr_cmnd *);
428static void ipr_process_error(struct ipr_cmnd *);
429static void ipr_reset_ioa_job(struct ipr_cmnd *);
430static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
431 enum ipr_shutdown_type);
432
433#ifdef CONFIG_SCSI_IPR_TRACE
434/**
435 * ipr_trc_hook - Add a trace entry to the driver trace
436 * @ipr_cmd: ipr command struct
437 * @type: trace type
438 * @add_data: additional data
439 *
440 * Return value:
441 * none
442 **/
443static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
444 u8 type, u32 add_data)
445{
446 struct ipr_trace_entry *trace_entry;
447 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
448
449 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
450 trace_entry->time = jiffies;
451 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
452 trace_entry->type = type;
453 trace_entry->cmd_index = ipr_cmd->cmd_index;
454 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
455 trace_entry->u.add_data = add_data;
456}
457#else
458#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
459#endif
460
461/**
462 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
463 * @ipr_cmd: ipr command struct
464 *
465 * Return value:
466 * none
467 **/
468static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
469{
470 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
471 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
472
473 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
474 ioarcb->write_data_transfer_length = 0;
475 ioarcb->read_data_transfer_length = 0;
476 ioarcb->write_ioadl_len = 0;
477 ioarcb->read_ioadl_len = 0;
478 ioasa->ioasc = 0;
479 ioasa->residual_data_len = 0;
480
481 ipr_cmd->scsi_cmd = NULL;
482 ipr_cmd->sense_buffer[0] = 0;
483 ipr_cmd->dma_use_sg = 0;
484}
485
486/**
487 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
488 * @ipr_cmd: ipr command struct
489 *
490 * Return value:
491 * none
492 **/
493static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
494{
495 ipr_reinit_ipr_cmnd(ipr_cmd);
496 ipr_cmd->u.scratch = 0;
497 ipr_cmd->sibling = NULL;
498 init_timer(&ipr_cmd->timer);
499}
500
501/**
502 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
503 * @ioa_cfg: ioa config struct
504 *
505 * Return value:
506 * pointer to ipr command struct
507 **/
508static
509struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
510{
511 struct ipr_cmnd *ipr_cmd;
512
513 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
514 list_del(&ipr_cmd->queue);
515 ipr_init_ipr_cmnd(ipr_cmd);
516
517 return ipr_cmd;
518}
519
520/**
521 * ipr_unmap_sglist - Unmap scatterlist if mapped
522 * @ioa_cfg: ioa config struct
523 * @ipr_cmd: ipr command struct
524 *
525 * Return value:
526 * nothing
527 **/
528static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
529 struct ipr_cmnd *ipr_cmd)
530{
531 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
532
533 if (ipr_cmd->dma_use_sg) {
534 if (scsi_cmd->use_sg > 0) {
535 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
536 scsi_cmd->use_sg,
537 scsi_cmd->sc_data_direction);
538 } else {
539 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
540 scsi_cmd->request_bufflen,
541 scsi_cmd->sc_data_direction);
542 }
543 }
544}
545
546/**
547 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
548 * @ioa_cfg: ioa config struct
549 * @clr_ints: interrupts to clear
550 *
551 * This function masks all interrupts on the adapter, then clears the
552 * interrupts specified in the mask
553 *
554 * Return value:
555 * none
556 **/
557static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
558 u32 clr_ints)
559{
560 volatile u32 int_reg;
561
562 /* Stop new interrupts */
563 ioa_cfg->allow_interrupts = 0;
564
565 /* Set interrupt mask to stop all new interrupts */
566 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
567
568 /* Clear any pending interrupts */
569 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
570 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
571}
572
573/**
574 * ipr_save_pcix_cmd_reg - Save PCI-X command register
575 * @ioa_cfg: ioa config struct
576 *
577 * Return value:
578 * 0 on success / -EIO on failure
579 **/
580static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
581{
582 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
583
584 if (pcix_cmd_reg == 0) {
585 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
586 return -EIO;
587 }
588
589 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
590 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
591 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
592 return -EIO;
593 }
594
595 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
596 return 0;
597}
598
599/**
600 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
601 * @ioa_cfg: ioa config struct
602 *
603 * Return value:
604 * 0 on success / -EIO on failure
605 **/
606static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
607{
608 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
609
610 if (pcix_cmd_reg) {
611 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
612 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
613 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
614 return -EIO;
615 }
616 } else {
617 dev_err(&ioa_cfg->pdev->dev,
618 "Failed to setup PCI-X command register\n");
619 return -EIO;
620 }
621
622 return 0;
623}
624
625/**
626 * ipr_scsi_eh_done - mid-layer done function for aborted ops
627 * @ipr_cmd: ipr command struct
628 *
629 * This function is invoked by the interrupt handler for
630 * ops generated by the SCSI mid-layer which are being aborted.
631 *
632 * Return value:
633 * none
634 **/
635static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
636{
637 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
638 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
639
640 scsi_cmd->result |= (DID_ERROR << 16);
641
642 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
643 scsi_cmd->scsi_done(scsi_cmd);
644 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
645}
646
647/**
648 * ipr_fail_all_ops - Fails all outstanding ops.
649 * @ioa_cfg: ioa config struct
650 *
651 * This function fails all outstanding ops.
652 *
653 * Return value:
654 * none
655 **/
656static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
657{
658 struct ipr_cmnd *ipr_cmd, *temp;
659
660 ENTER;
661 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
662 list_del(&ipr_cmd->queue);
663
664 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
665 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
666
667 if (ipr_cmd->scsi_cmd)
668 ipr_cmd->done = ipr_scsi_eh_done;
669
670 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
671 del_timer(&ipr_cmd->timer);
672 ipr_cmd->done(ipr_cmd);
673 }
674
675 LEAVE;
676}
677
678/**
679 * ipr_do_req - Send driver initiated requests.
680 * @ipr_cmd: ipr command struct
681 * @done: done function
682 * @timeout_func: timeout function
683 * @timeout: timeout value
684 *
685 * This function sends the specified command to the adapter with the
686 * timeout given. The done function is invoked on command completion.
687 *
688 * Return value:
689 * none
690 **/
691static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
692 void (*done) (struct ipr_cmnd *),
693 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
694{
695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
696
697 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
698
699 ipr_cmd->done = done;
700
701 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
702 ipr_cmd->timer.expires = jiffies + timeout;
703 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
704
705 add_timer(&ipr_cmd->timer);
706
707 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
708
709 mb();
710 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
711 ioa_cfg->regs.ioarrin_reg);
712}
713
714/**
715 * ipr_internal_cmd_done - Op done function for an internally generated op.
716 * @ipr_cmd: ipr command struct
717 *
718 * This function is the op done function for an internally generated,
719 * blocking op. It simply wakes the sleeping thread.
720 *
721 * Return value:
722 * none
723 **/
724static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
725{
726 if (ipr_cmd->sibling)
727 ipr_cmd->sibling = NULL;
728 else
729 complete(&ipr_cmd->completion);
730}
731
732/**
733 * ipr_send_blocking_cmd - Send command and sleep on its completion.
734 * @ipr_cmd: ipr command struct
735 * @timeout_func: function to invoke if command times out
736 * @timeout: timeout
737 *
738 * Return value:
739 * none
740 **/
741static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
742 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
743 u32 timeout)
744{
745 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
746
747 init_completion(&ipr_cmd->completion);
748 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
749
750 spin_unlock_irq(ioa_cfg->host->host_lock);
751 wait_for_completion(&ipr_cmd->completion);
752 spin_lock_irq(ioa_cfg->host->host_lock);
753}
754
755/**
756 * ipr_send_hcam - Send an HCAM to the adapter.
757 * @ioa_cfg: ioa config struct
758 * @type: HCAM type
759 * @hostrcb: hostrcb struct
760 *
761 * This function will send a Host Controlled Async command to the adapter.
762 * If HCAMs are currently not allowed to be issued to the adapter, it will
763 * place the hostrcb on the free queue.
764 *
765 * Return value:
766 * none
767 **/
768static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
769 struct ipr_hostrcb *hostrcb)
770{
771 struct ipr_cmnd *ipr_cmd;
772 struct ipr_ioarcb *ioarcb;
773
774 if (ioa_cfg->allow_cmds) {
775 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
776 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
777 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
778
779 ipr_cmd->u.hostrcb = hostrcb;
780 ioarcb = &ipr_cmd->ioarcb;
781
782 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
783 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
784 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
785 ioarcb->cmd_pkt.cdb[1] = type;
786 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
787 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
788
789 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
790 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
791 ipr_cmd->ioadl[0].flags_and_data_len =
792 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
793 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
794
795 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
796 ipr_cmd->done = ipr_process_ccn;
797 else
798 ipr_cmd->done = ipr_process_error;
799
800 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
801
802 mb();
803 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
804 ioa_cfg->regs.ioarrin_reg);
805 } else {
806 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
807 }
808}
809
810/**
811 * ipr_init_res_entry - Initialize a resource entry struct.
812 * @res: resource entry struct
813 *
814 * Return value:
815 * none
816 **/
817static void ipr_init_res_entry(struct ipr_resource_entry *res)
818{
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -0600819 res->needs_sync_complete = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 res->in_erp = 0;
821 res->add_to_ml = 0;
822 res->del_from_ml = 0;
823 res->resetting_device = 0;
824 res->sdev = NULL;
825}
826
827/**
828 * ipr_handle_config_change - Handle a config change from the adapter
829 * @ioa_cfg: ioa config struct
830 * @hostrcb: hostrcb
831 *
832 * Return value:
833 * none
834 **/
835static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
836 struct ipr_hostrcb *hostrcb)
837{
838 struct ipr_resource_entry *res = NULL;
839 struct ipr_config_table_entry *cfgte;
840 u32 is_ndn = 1;
841
842 cfgte = &hostrcb->hcam.u.ccn.cfgte;
843
844 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
845 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
846 sizeof(cfgte->res_addr))) {
847 is_ndn = 0;
848 break;
849 }
850 }
851
852 if (is_ndn) {
853 if (list_empty(&ioa_cfg->free_res_q)) {
854 ipr_send_hcam(ioa_cfg,
855 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
856 hostrcb);
857 return;
858 }
859
860 res = list_entry(ioa_cfg->free_res_q.next,
861 struct ipr_resource_entry, queue);
862
863 list_del(&res->queue);
864 ipr_init_res_entry(res);
865 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
866 }
867
868 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
869
870 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
871 if (res->sdev) {
872 res->sdev->hostdata = NULL;
873 res->del_from_ml = 1;
874 if (ioa_cfg->allow_ml_add_del)
875 schedule_work(&ioa_cfg->work_q);
876 } else
877 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
878 } else if (!res->sdev) {
879 res->add_to_ml = 1;
880 if (ioa_cfg->allow_ml_add_del)
881 schedule_work(&ioa_cfg->work_q);
882 }
883
884 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
885}
886
887/**
888 * ipr_process_ccn - Op done function for a CCN.
889 * @ipr_cmd: ipr command struct
890 *
891 * This function is the op done function for a configuration
892 * change notification host controlled async from the adapter.
893 *
894 * Return value:
895 * none
896 **/
897static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
898{
899 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
900 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
901 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
902
903 list_del(&hostrcb->queue);
904 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
905
906 if (ioasc) {
907 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
908 dev_err(&ioa_cfg->pdev->dev,
909 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
910
911 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
912 } else {
913 ipr_handle_config_change(ioa_cfg, hostrcb);
914 }
915}
916
917/**
918 * ipr_log_vpd - Log the passed VPD to the error log.
brking@us.ibm.comcfc32132005-11-01 17:00:18 -0600919 * @vpd: vendor/product id/sn struct
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 *
921 * Return value:
922 * none
923 **/
brking@us.ibm.comcfc32132005-11-01 17:00:18 -0600924static void ipr_log_vpd(struct ipr_vpd *vpd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925{
926 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
927 + IPR_SERIAL_NUM_LEN];
928
brking@us.ibm.comcfc32132005-11-01 17:00:18 -0600929 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
930 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 IPR_PROD_ID_LEN);
932 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
933 ipr_err("Vendor/Product ID: %s\n", buffer);
934
brking@us.ibm.comcfc32132005-11-01 17:00:18 -0600935 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 buffer[IPR_SERIAL_NUM_LEN] = '\0';
937 ipr_err(" Serial Number: %s\n", buffer);
938}
939
940/**
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -0600941 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
942 * @vpd: vendor/product id/sn/wwn struct
943 *
944 * Return value:
945 * none
946 **/
947static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
948{
949 ipr_log_vpd(&vpd->vpd);
950 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
951 be32_to_cpu(vpd->wwid[1]));
952}
953
954/**
955 * ipr_log_enhanced_cache_error - Log a cache error.
956 * @ioa_cfg: ioa config struct
957 * @hostrcb: hostrcb struct
958 *
959 * Return value:
960 * none
961 **/
962static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
963 struct ipr_hostrcb *hostrcb)
964{
965 struct ipr_hostrcb_type_12_error *error =
966 &hostrcb->hcam.u.error.u.type_12_error;
967
968 ipr_err("-----Current Configuration-----\n");
969 ipr_err("Cache Directory Card Information:\n");
970 ipr_log_ext_vpd(&error->ioa_vpd);
971 ipr_err("Adapter Card Information:\n");
972 ipr_log_ext_vpd(&error->cfc_vpd);
973
974 ipr_err("-----Expected Configuration-----\n");
975 ipr_err("Cache Directory Card Information:\n");
976 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
977 ipr_err("Adapter Card Information:\n");
978 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
979
980 ipr_err("Additional IOA Data: %08X %08X %08X\n",
981 be32_to_cpu(error->ioa_data[0]),
982 be32_to_cpu(error->ioa_data[1]),
983 be32_to_cpu(error->ioa_data[2]));
984}
985
986/**
Linus Torvalds1da177e2005-04-16 15:20:36 -0700987 * ipr_log_cache_error - Log a cache error.
988 * @ioa_cfg: ioa config struct
989 * @hostrcb: hostrcb struct
990 *
991 * Return value:
992 * none
993 **/
994static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
995 struct ipr_hostrcb *hostrcb)
996{
997 struct ipr_hostrcb_type_02_error *error =
998 &hostrcb->hcam.u.error.u.type_02_error;
999
1000 ipr_err("-----Current Configuration-----\n");
1001 ipr_err("Cache Directory Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001002 ipr_log_vpd(&error->ioa_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003 ipr_err("Adapter Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001004 ipr_log_vpd(&error->cfc_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005
1006 ipr_err("-----Expected Configuration-----\n");
1007 ipr_err("Cache Directory Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001008 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 ipr_err("Adapter Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001010 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011
1012 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1013 be32_to_cpu(error->ioa_data[0]),
1014 be32_to_cpu(error->ioa_data[1]),
1015 be32_to_cpu(error->ioa_data[2]));
1016}
1017
1018/**
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -06001019 * ipr_log_enhanced_config_error - Log a configuration error.
1020 * @ioa_cfg: ioa config struct
1021 * @hostrcb: hostrcb struct
1022 *
1023 * Return value:
1024 * none
1025 **/
1026static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1027 struct ipr_hostrcb *hostrcb)
1028{
1029 int errors_logged, i;
1030 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1031 struct ipr_hostrcb_type_13_error *error;
1032
1033 error = &hostrcb->hcam.u.error.u.type_13_error;
1034 errors_logged = be32_to_cpu(error->errors_logged);
1035
1036 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1037 be32_to_cpu(error->errors_detected), errors_logged);
1038
1039 dev_entry = error->dev;
1040
1041 for (i = 0; i < errors_logged; i++, dev_entry++) {
1042 ipr_err_separator;
1043
1044 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1045 ipr_log_ext_vpd(&dev_entry->vpd);
1046
1047 ipr_err("-----New Device Information-----\n");
1048 ipr_log_ext_vpd(&dev_entry->new_vpd);
1049
1050 ipr_err("Cache Directory Card Information:\n");
1051 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1052
1053 ipr_err("Adapter Card Information:\n");
1054 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1055 }
1056}
1057
1058/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 * ipr_log_config_error - Log a configuration error.
1060 * @ioa_cfg: ioa config struct
1061 * @hostrcb: hostrcb struct
1062 *
1063 * Return value:
1064 * none
1065 **/
1066static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1067 struct ipr_hostrcb *hostrcb)
1068{
1069 int errors_logged, i;
1070 struct ipr_hostrcb_device_data_entry *dev_entry;
1071 struct ipr_hostrcb_type_03_error *error;
1072
1073 error = &hostrcb->hcam.u.error.u.type_03_error;
1074 errors_logged = be32_to_cpu(error->errors_logged);
1075
1076 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1077 be32_to_cpu(error->errors_detected), errors_logged);
1078
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001079 dev_entry = error->dev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001080
1081 for (i = 0; i < errors_logged; i++, dev_entry++) {
1082 ipr_err_separator;
1083
brking@us.ibm.comfa15b1f2005-11-01 17:00:27 -06001084 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001085 ipr_log_vpd(&dev_entry->vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001086
1087 ipr_err("-----New Device Information-----\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001088 ipr_log_vpd(&dev_entry->new_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089
1090 ipr_err("Cache Directory Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001091 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092
1093 ipr_err("Adapter Card Information:\n");
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001094 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001095
1096 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1097 be32_to_cpu(dev_entry->ioa_data[0]),
1098 be32_to_cpu(dev_entry->ioa_data[1]),
1099 be32_to_cpu(dev_entry->ioa_data[2]),
1100 be32_to_cpu(dev_entry->ioa_data[3]),
1101 be32_to_cpu(dev_entry->ioa_data[4]));
1102 }
1103}
1104
1105/**
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -06001106 * ipr_log_enhanced_array_error - Log an array configuration error.
1107 * @ioa_cfg: ioa config struct
1108 * @hostrcb: hostrcb struct
1109 *
1110 * Return value:
1111 * none
1112 **/
1113static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1114 struct ipr_hostrcb *hostrcb)
1115{
1116 int i, num_entries;
1117 struct ipr_hostrcb_type_14_error *error;
1118 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1119 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1120
1121 error = &hostrcb->hcam.u.error.u.type_14_error;
1122
1123 ipr_err_separator;
1124
1125 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1126 error->protection_level,
1127 ioa_cfg->host->host_no,
1128 error->last_func_vset_res_addr.bus,
1129 error->last_func_vset_res_addr.target,
1130 error->last_func_vset_res_addr.lun);
1131
1132 ipr_err_separator;
1133
1134 array_entry = error->array_member;
1135 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1136 sizeof(error->array_member));
1137
1138 for (i = 0; i < num_entries; i++, array_entry++) {
1139 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1140 continue;
1141
1142 if (be32_to_cpu(error->exposed_mode_adn) == i)
1143 ipr_err("Exposed Array Member %d:\n", i);
1144 else
1145 ipr_err("Array Member %d:\n", i);
1146
1147 ipr_log_ext_vpd(&array_entry->vpd);
1148 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1149 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1150 "Expected Location");
1151
1152 ipr_err_separator;
1153 }
1154}
1155
1156/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001157 * ipr_log_array_error - Log an array configuration error.
1158 * @ioa_cfg: ioa config struct
1159 * @hostrcb: hostrcb struct
1160 *
1161 * Return value:
1162 * none
1163 **/
1164static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1165 struct ipr_hostrcb *hostrcb)
1166{
1167 int i;
1168 struct ipr_hostrcb_type_04_error *error;
1169 struct ipr_hostrcb_array_data_entry *array_entry;
1170 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1171
1172 error = &hostrcb->hcam.u.error.u.type_04_error;
1173
1174 ipr_err_separator;
1175
1176 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1177 error->protection_level,
1178 ioa_cfg->host->host_no,
1179 error->last_func_vset_res_addr.bus,
1180 error->last_func_vset_res_addr.target,
1181 error->last_func_vset_res_addr.lun);
1182
1183 ipr_err_separator;
1184
1185 array_entry = error->array_member;
1186
1187 for (i = 0; i < 18; i++) {
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001188 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001189 continue;
1190
brking@us.ibm.comfa15b1f2005-11-01 17:00:27 -06001191 if (be32_to_cpu(error->exposed_mode_adn) == i)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192 ipr_err("Exposed Array Member %d:\n", i);
brking@us.ibm.comfa15b1f2005-11-01 17:00:27 -06001193 else
Linus Torvalds1da177e2005-04-16 15:20:36 -07001194 ipr_err("Array Member %d:\n", i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001195
brking@us.ibm.comcfc32132005-11-01 17:00:18 -06001196 ipr_log_vpd(&array_entry->vpd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197
brking@us.ibm.comfa15b1f2005-11-01 17:00:27 -06001198 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1199 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1200 "Expected Location");
Linus Torvalds1da177e2005-04-16 15:20:36 -07001201
1202 ipr_err_separator;
1203
1204 if (i == 9)
1205 array_entry = error->array_member2;
1206 else
1207 array_entry++;
1208 }
1209}
1210
1211/**
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06001212 * ipr_log_hex_data - Log additional hex IOA error data.
1213 * @data: IOA error data
1214 * @len: data length
1215 *
1216 * Return value:
1217 * none
1218 **/
1219static void ipr_log_hex_data(u32 *data, int len)
1220{
1221 int i;
1222
1223 if (len == 0)
1224 return;
1225
1226 for (i = 0; i < len / 4; i += 4) {
1227 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1228 be32_to_cpu(data[i]),
1229 be32_to_cpu(data[i+1]),
1230 be32_to_cpu(data[i+2]),
1231 be32_to_cpu(data[i+3]));
1232 }
1233}
1234
1235/**
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -06001236 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1237 * @ioa_cfg: ioa config struct
1238 * @hostrcb: hostrcb struct
1239 *
1240 * Return value:
1241 * none
1242 **/
1243static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1244 struct ipr_hostrcb *hostrcb)
1245{
1246 struct ipr_hostrcb_type_17_error *error;
1247
1248 error = &hostrcb->hcam.u.error.u.type_17_error;
1249 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1250
1251 ipr_err("%s\n", error->failure_reason);
1252 ipr_err("Remote Adapter VPD:\n");
1253 ipr_log_ext_vpd(&error->vpd);
1254 ipr_log_hex_data(error->data,
1255 be32_to_cpu(hostrcb->hcam.length) -
1256 (offsetof(struct ipr_hostrcb_error, u) +
1257 offsetof(struct ipr_hostrcb_type_17_error, data)));
1258}
1259
1260/**
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06001261 * ipr_log_dual_ioa_error - Log a dual adapter error.
1262 * @ioa_cfg: ioa config struct
1263 * @hostrcb: hostrcb struct
1264 *
1265 * Return value:
1266 * none
1267 **/
1268static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1269 struct ipr_hostrcb *hostrcb)
1270{
1271 struct ipr_hostrcb_type_07_error *error;
1272
1273 error = &hostrcb->hcam.u.error.u.type_07_error;
1274 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1275
1276 ipr_err("%s\n", error->failure_reason);
1277 ipr_err("Remote Adapter VPD:\n");
1278 ipr_log_vpd(&error->vpd);
1279 ipr_log_hex_data(error->data,
1280 be32_to_cpu(hostrcb->hcam.length) -
1281 (offsetof(struct ipr_hostrcb_error, u) +
1282 offsetof(struct ipr_hostrcb_type_07_error, data)));
1283}
1284
1285/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07001286 * ipr_log_generic_error - Log an adapter error.
1287 * @ioa_cfg: ioa config struct
1288 * @hostrcb: hostrcb struct
1289 *
1290 * Return value:
1291 * none
1292 **/
1293static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1294 struct ipr_hostrcb *hostrcb)
1295{
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06001296 ipr_log_hex_data(hostrcb->hcam.u.raw.data,
1297 be32_to_cpu(hostrcb->hcam.length));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001298}
1299
1300/**
1301 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1302 * @ioasc: IOASC
1303 *
1304 * This function will return the index of into the ipr_error_table
1305 * for the specified IOASC. If the IOASC is not in the table,
1306 * 0 will be returned, which points to the entry used for unknown errors.
1307 *
1308 * Return value:
1309 * index into the ipr_error_table
1310 **/
1311static u32 ipr_get_error(u32 ioasc)
1312{
1313 int i;
1314
1315 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1316 if (ipr_error_table[i].ioasc == ioasc)
1317 return i;
1318
1319 return 0;
1320}
1321
1322/**
1323 * ipr_handle_log_data - Log an adapter error.
1324 * @ioa_cfg: ioa config struct
1325 * @hostrcb: hostrcb struct
1326 *
1327 * This function logs an adapter error to the system.
1328 *
1329 * Return value:
1330 * none
1331 **/
1332static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1333 struct ipr_hostrcb *hostrcb)
1334{
1335 u32 ioasc;
1336 int error_index;
1337
1338 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1339 return;
1340
1341 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1342 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1343
1344 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1345
1346 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1347 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1348 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1349 scsi_report_bus_reset(ioa_cfg->host,
1350 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1351 }
1352
1353 error_index = ipr_get_error(ioasc);
1354
1355 if (!ipr_error_table[error_index].log_hcam)
1356 return;
1357
1358 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
1359 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1360 "%s\n", ipr_error_table[error_index].error);
1361 } else {
1362 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1363 ipr_error_table[error_index].error);
1364 }
1365
1366 /* Set indication we have logged an error */
1367 ioa_cfg->errors_logged++;
1368
1369 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1370 return;
brking@us.ibm.comcf852032005-11-01 17:00:47 -06001371 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1372 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373
1374 switch (hostrcb->hcam.overlay_id) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375 case IPR_HOST_RCB_OVERLAY_ID_2:
1376 ipr_log_cache_error(ioa_cfg, hostrcb);
1377 break;
1378 case IPR_HOST_RCB_OVERLAY_ID_3:
1379 ipr_log_config_error(ioa_cfg, hostrcb);
1380 break;
1381 case IPR_HOST_RCB_OVERLAY_ID_4:
1382 case IPR_HOST_RCB_OVERLAY_ID_6:
1383 ipr_log_array_error(ioa_cfg, hostrcb);
1384 break;
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06001385 case IPR_HOST_RCB_OVERLAY_ID_7:
1386 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1387 break;
brking@us.ibm.comee0f05b2005-11-01 17:02:15 -06001388 case IPR_HOST_RCB_OVERLAY_ID_12:
1389 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1390 break;
1391 case IPR_HOST_RCB_OVERLAY_ID_13:
1392 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1393 break;
1394 case IPR_HOST_RCB_OVERLAY_ID_14:
1395 case IPR_HOST_RCB_OVERLAY_ID_16:
1396 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1397 break;
1398 case IPR_HOST_RCB_OVERLAY_ID_17:
1399 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1400 break;
brking@us.ibm.comcf852032005-11-01 17:00:47 -06001401 case IPR_HOST_RCB_OVERLAY_ID_1:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001402 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403 default:
brking@us.ibm.coma9cfca92005-11-01 17:00:41 -06001404 ipr_log_generic_error(ioa_cfg, hostrcb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001405 break;
1406 }
1407}
1408
1409/**
1410 * ipr_process_error - Op done function for an adapter error log.
1411 * @ipr_cmd: ipr command struct
1412 *
1413 * This function is the op done function for an error log host
1414 * controlled async from the adapter. It will log the error and
1415 * send the HCAM back to the adapter.
1416 *
1417 * Return value:
1418 * none
1419 **/
1420static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1421{
1422 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1423 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1424 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1425
1426 list_del(&hostrcb->queue);
1427 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1428
1429 if (!ioasc) {
1430 ipr_handle_log_data(ioa_cfg, hostrcb);
1431 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1432 dev_err(&ioa_cfg->pdev->dev,
1433 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1434 }
1435
1436 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1437}
1438
1439/**
1440 * ipr_timeout - An internally generated op has timed out.
1441 * @ipr_cmd: ipr command struct
1442 *
1443 * This function blocks host requests and initiates an
1444 * adapter reset.
1445 *
1446 * Return value:
1447 * none
1448 **/
1449static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1450{
1451 unsigned long lock_flags = 0;
1452 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1453
1454 ENTER;
1455 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1456
1457 ioa_cfg->errors_logged++;
1458 dev_err(&ioa_cfg->pdev->dev,
1459 "Adapter being reset due to command timeout.\n");
1460
1461 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1462 ioa_cfg->sdt_state = GET_DUMP;
1463
1464 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1465 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1466
1467 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1468 LEAVE;
1469}
1470
1471/**
1472 * ipr_oper_timeout - Adapter timed out transitioning to operational
1473 * @ipr_cmd: ipr command struct
1474 *
1475 * This function blocks host requests and initiates an
1476 * adapter reset.
1477 *
1478 * Return value:
1479 * none
1480 **/
1481static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1482{
1483 unsigned long lock_flags = 0;
1484 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1485
1486 ENTER;
1487 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1488
1489 ioa_cfg->errors_logged++;
1490 dev_err(&ioa_cfg->pdev->dev,
1491 "Adapter timed out transitioning to operational.\n");
1492
1493 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1494 ioa_cfg->sdt_state = GET_DUMP;
1495
1496 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1497 if (ipr_fastfail)
1498 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1499 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1500 }
1501
1502 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1503 LEAVE;
1504}
1505
1506/**
1507 * ipr_reset_reload - Reset/Reload the IOA
1508 * @ioa_cfg: ioa config struct
1509 * @shutdown_type: shutdown type
1510 *
1511 * This function resets the adapter and re-initializes it.
1512 * This function assumes that all new host commands have been stopped.
1513 * Return value:
1514 * SUCCESS / FAILED
1515 **/
1516static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1517 enum ipr_shutdown_type shutdown_type)
1518{
1519 if (!ioa_cfg->in_reset_reload)
1520 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1521
1522 spin_unlock_irq(ioa_cfg->host->host_lock);
1523 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1524 spin_lock_irq(ioa_cfg->host->host_lock);
1525
1526 /* If we got hit with a host reset while we were already resetting
1527 the adapter for some reason, and the reset failed. */
1528 if (ioa_cfg->ioa_is_dead) {
1529 ipr_trace;
1530 return FAILED;
1531 }
1532
1533 return SUCCESS;
1534}
1535
1536/**
1537 * ipr_find_ses_entry - Find matching SES in SES table
1538 * @res: resource entry struct of SES
1539 *
1540 * Return value:
1541 * pointer to SES table entry / NULL on failure
1542 **/
1543static const struct ipr_ses_table_entry *
1544ipr_find_ses_entry(struct ipr_resource_entry *res)
1545{
1546 int i, j, matches;
1547 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1548
1549 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1550 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1551 if (ste->compare_product_id_byte[j] == 'X') {
1552 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1553 matches++;
1554 else
1555 break;
1556 } else
1557 matches++;
1558 }
1559
1560 if (matches == IPR_PROD_ID_LEN)
1561 return ste;
1562 }
1563
1564 return NULL;
1565}
1566
1567/**
1568 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1569 * @ioa_cfg: ioa config struct
1570 * @bus: SCSI bus
1571 * @bus_width: bus width
1572 *
1573 * Return value:
1574 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1575 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1576 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1577 * max 160MHz = max 320MB/sec).
1578 **/
1579static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1580{
1581 struct ipr_resource_entry *res;
1582 const struct ipr_ses_table_entry *ste;
1583 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1584
1585 /* Loop through each config table entry in the config table buffer */
1586 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1587 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1588 continue;
1589
1590 if (bus != res->cfgte.res_addr.bus)
1591 continue;
1592
1593 if (!(ste = ipr_find_ses_entry(res)))
1594 continue;
1595
1596 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1597 }
1598
1599 return max_xfer_rate;
1600}
1601
1602/**
1603 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1604 * @ioa_cfg: ioa config struct
1605 * @max_delay: max delay in micro-seconds to wait
1606 *
1607 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1608 *
1609 * Return value:
1610 * 0 on success / other on failure
1611 **/
1612static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1613{
1614 volatile u32 pcii_reg;
1615 int delay = 1;
1616
1617 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1618 while (delay < max_delay) {
1619 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1620
1621 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1622 return 0;
1623
1624 /* udelay cannot be used if delay is more than a few milliseconds */
1625 if ((delay / 1000) > MAX_UDELAY_MS)
1626 mdelay(delay / 1000);
1627 else
1628 udelay(delay);
1629
1630 delay += delay;
1631 }
1632 return -EIO;
1633}
1634
1635/**
1636 * ipr_get_ldump_data_section - Dump IOA memory
1637 * @ioa_cfg: ioa config struct
1638 * @start_addr: adapter address to dump
1639 * @dest: destination kernel buffer
1640 * @length_in_words: length to dump in 4 byte words
1641 *
1642 * Return value:
1643 * 0 on success / -EIO on failure
1644 **/
1645static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1646 u32 start_addr,
1647 __be32 *dest, u32 length_in_words)
1648{
1649 volatile u32 temp_pcii_reg;
1650 int i, delay = 0;
1651
1652 /* Write IOA interrupt reg starting LDUMP state */
1653 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1654 ioa_cfg->regs.set_uproc_interrupt_reg);
1655
1656 /* Wait for IO debug acknowledge */
1657 if (ipr_wait_iodbg_ack(ioa_cfg,
1658 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1659 dev_err(&ioa_cfg->pdev->dev,
1660 "IOA dump long data transfer timeout\n");
1661 return -EIO;
1662 }
1663
1664 /* Signal LDUMP interlocked - clear IO debug ack */
1665 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1666 ioa_cfg->regs.clr_interrupt_reg);
1667
1668 /* Write Mailbox with starting address */
1669 writel(start_addr, ioa_cfg->ioa_mailbox);
1670
1671 /* Signal address valid - clear IOA Reset alert */
1672 writel(IPR_UPROCI_RESET_ALERT,
1673 ioa_cfg->regs.clr_uproc_interrupt_reg);
1674
1675 for (i = 0; i < length_in_words; i++) {
1676 /* Wait for IO debug acknowledge */
1677 if (ipr_wait_iodbg_ack(ioa_cfg,
1678 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1679 dev_err(&ioa_cfg->pdev->dev,
1680 "IOA dump short data transfer timeout\n");
1681 return -EIO;
1682 }
1683
1684 /* Read data from mailbox and increment destination pointer */
1685 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1686 dest++;
1687
1688 /* For all but the last word of data, signal data received */
1689 if (i < (length_in_words - 1)) {
1690 /* Signal dump data received - Clear IO debug Ack */
1691 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1692 ioa_cfg->regs.clr_interrupt_reg);
1693 }
1694 }
1695
1696 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1697 writel(IPR_UPROCI_RESET_ALERT,
1698 ioa_cfg->regs.set_uproc_interrupt_reg);
1699
1700 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1701 ioa_cfg->regs.clr_uproc_interrupt_reg);
1702
1703 /* Signal dump data received - Clear IO debug Ack */
1704 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1705 ioa_cfg->regs.clr_interrupt_reg);
1706
1707 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1708 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1709 temp_pcii_reg =
1710 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1711
1712 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1713 return 0;
1714
1715 udelay(10);
1716 delay += 10;
1717 }
1718
1719 return 0;
1720}
1721
1722#ifdef CONFIG_SCSI_IPR_DUMP
1723/**
1724 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1725 * @ioa_cfg: ioa config struct
1726 * @pci_address: adapter address
1727 * @length: length of data to copy
1728 *
1729 * Copy data from PCI adapter to kernel buffer.
1730 * Note: length MUST be a 4 byte multiple
1731 * Return value:
1732 * 0 on success / other on failure
1733 **/
1734static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1735 unsigned long pci_address, u32 length)
1736{
1737 int bytes_copied = 0;
1738 int cur_len, rc, rem_len, rem_page_len;
1739 __be32 *page;
1740 unsigned long lock_flags = 0;
1741 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1742
1743 while (bytes_copied < length &&
1744 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1745 if (ioa_dump->page_offset >= PAGE_SIZE ||
1746 ioa_dump->page_offset == 0) {
1747 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1748
1749 if (!page) {
1750 ipr_trace;
1751 return bytes_copied;
1752 }
1753
1754 ioa_dump->page_offset = 0;
1755 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1756 ioa_dump->next_page_index++;
1757 } else
1758 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1759
1760 rem_len = length - bytes_copied;
1761 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1762 cur_len = min(rem_len, rem_page_len);
1763
1764 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1765 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1766 rc = -EIO;
1767 } else {
1768 rc = ipr_get_ldump_data_section(ioa_cfg,
1769 pci_address + bytes_copied,
1770 &page[ioa_dump->page_offset / 4],
1771 (cur_len / sizeof(u32)));
1772 }
1773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1774
1775 if (!rc) {
1776 ioa_dump->page_offset += cur_len;
1777 bytes_copied += cur_len;
1778 } else {
1779 ipr_trace;
1780 break;
1781 }
1782 schedule();
1783 }
1784
1785 return bytes_copied;
1786}
1787
1788/**
1789 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1790 * @hdr: dump entry header struct
1791 *
1792 * Return value:
1793 * nothing
1794 **/
1795static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1796{
1797 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1798 hdr->num_elems = 1;
1799 hdr->offset = sizeof(*hdr);
1800 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1801}
1802
1803/**
1804 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1805 * @ioa_cfg: ioa config struct
1806 * @driver_dump: driver dump struct
1807 *
1808 * Return value:
1809 * nothing
1810 **/
1811static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1812 struct ipr_driver_dump *driver_dump)
1813{
1814 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1815
1816 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1817 driver_dump->ioa_type_entry.hdr.len =
1818 sizeof(struct ipr_dump_ioa_type_entry) -
1819 sizeof(struct ipr_dump_entry_header);
1820 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1821 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1822 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1823 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1824 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1825 ucode_vpd->minor_release[1];
1826 driver_dump->hdr.num_entries++;
1827}
1828
1829/**
1830 * ipr_dump_version_data - Fill in the driver version in the dump.
1831 * @ioa_cfg: ioa config struct
1832 * @driver_dump: driver dump struct
1833 *
1834 * Return value:
1835 * nothing
1836 **/
1837static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1838 struct ipr_driver_dump *driver_dump)
1839{
1840 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1841 driver_dump->version_entry.hdr.len =
1842 sizeof(struct ipr_dump_version_entry) -
1843 sizeof(struct ipr_dump_entry_header);
1844 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1845 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1846 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1847 driver_dump->hdr.num_entries++;
1848}
1849
1850/**
1851 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1852 * @ioa_cfg: ioa config struct
1853 * @driver_dump: driver dump struct
1854 *
1855 * Return value:
1856 * nothing
1857 **/
1858static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1859 struct ipr_driver_dump *driver_dump)
1860{
1861 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1862 driver_dump->trace_entry.hdr.len =
1863 sizeof(struct ipr_dump_trace_entry) -
1864 sizeof(struct ipr_dump_entry_header);
1865 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1866 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1867 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1868 driver_dump->hdr.num_entries++;
1869}
1870
1871/**
1872 * ipr_dump_location_data - Fill in the IOA location in the dump.
1873 * @ioa_cfg: ioa config struct
1874 * @driver_dump: driver dump struct
1875 *
1876 * Return value:
1877 * nothing
1878 **/
1879static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1880 struct ipr_driver_dump *driver_dump)
1881{
1882 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1883 driver_dump->location_entry.hdr.len =
1884 sizeof(struct ipr_dump_location_entry) -
1885 sizeof(struct ipr_dump_entry_header);
1886 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1887 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1888 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1889 driver_dump->hdr.num_entries++;
1890}
1891
1892/**
1893 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1894 * @ioa_cfg: ioa config struct
1895 * @dump: dump struct
1896 *
1897 * Return value:
1898 * nothing
1899 **/
1900static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1901{
1902 unsigned long start_addr, sdt_word;
1903 unsigned long lock_flags = 0;
1904 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1905 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1906 u32 num_entries, start_off, end_off;
1907 u32 bytes_to_copy, bytes_copied, rc;
1908 struct ipr_sdt *sdt;
1909 int i;
1910
1911 ENTER;
1912
1913 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1914
1915 if (ioa_cfg->sdt_state != GET_DUMP) {
1916 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1917 return;
1918 }
1919
1920 start_addr = readl(ioa_cfg->ioa_mailbox);
1921
1922 if (!ipr_sdt_is_fmt2(start_addr)) {
1923 dev_err(&ioa_cfg->pdev->dev,
1924 "Invalid dump table format: %lx\n", start_addr);
1925 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1926 return;
1927 }
1928
1929 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1930
1931 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1932
1933 /* Initialize the overall dump header */
1934 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1935 driver_dump->hdr.num_entries = 1;
1936 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1937 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1938 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1939 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1940
1941 ipr_dump_version_data(ioa_cfg, driver_dump);
1942 ipr_dump_location_data(ioa_cfg, driver_dump);
1943 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1944 ipr_dump_trace_data(ioa_cfg, driver_dump);
1945
1946 /* Update dump_header */
1947 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1948
1949 /* IOA Dump entry */
1950 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1951 ioa_dump->format = IPR_SDT_FMT2;
1952 ioa_dump->hdr.len = 0;
1953 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1954 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1955
1956 /* First entries in sdt are actually a list of dump addresses and
1957 lengths to gather the real dump data. sdt represents the pointer
1958 to the ioa generated dump table. Dump data will be extracted based
1959 on entries in this table */
1960 sdt = &ioa_dump->sdt;
1961
1962 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
1963 sizeof(struct ipr_sdt) / sizeof(__be32));
1964
1965 /* Smart Dump table is ready to use and the first entry is valid */
1966 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
1967 dev_err(&ioa_cfg->pdev->dev,
1968 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1969 rc, be32_to_cpu(sdt->hdr.state));
1970 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
1971 ioa_cfg->sdt_state = DUMP_OBTAINED;
1972 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1973 return;
1974 }
1975
1976 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
1977
1978 if (num_entries > IPR_NUM_SDT_ENTRIES)
1979 num_entries = IPR_NUM_SDT_ENTRIES;
1980
1981 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1982
1983 for (i = 0; i < num_entries; i++) {
1984 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
1985 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1986 break;
1987 }
1988
1989 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
1990 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
1991 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
1992 end_off = be32_to_cpu(sdt->entry[i].end_offset);
1993
1994 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
1995 bytes_to_copy = end_off - start_off;
1996 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
1997 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
1998 continue;
1999 }
2000
2001 /* Copy data from adapter to driver buffers */
2002 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2003 bytes_to_copy);
2004
2005 ioa_dump->hdr.len += bytes_copied;
2006
2007 if (bytes_copied != bytes_to_copy) {
2008 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2009 break;
2010 }
2011 }
2012 }
2013 }
2014
2015 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2016
2017 /* Update dump_header */
2018 driver_dump->hdr.len += ioa_dump->hdr.len;
2019 wmb();
2020 ioa_cfg->sdt_state = DUMP_OBTAINED;
2021 LEAVE;
2022}
2023
2024#else
2025#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2026#endif
2027
2028/**
2029 * ipr_release_dump - Free adapter dump memory
2030 * @kref: kref struct
2031 *
2032 * Return value:
2033 * nothing
2034 **/
2035static void ipr_release_dump(struct kref *kref)
2036{
2037 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2038 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2039 unsigned long lock_flags = 0;
2040 int i;
2041
2042 ENTER;
2043 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2044 ioa_cfg->dump = NULL;
2045 ioa_cfg->sdt_state = INACTIVE;
2046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2047
2048 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2049 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2050
2051 kfree(dump);
2052 LEAVE;
2053}
2054
2055/**
2056 * ipr_worker_thread - Worker thread
2057 * @data: ioa config struct
2058 *
2059 * Called at task level from a work thread. This function takes care
2060 * of adding and removing device from the mid-layer as configuration
2061 * changes are detected by the adapter.
2062 *
2063 * Return value:
2064 * nothing
2065 **/
2066static void ipr_worker_thread(void *data)
2067{
2068 unsigned long lock_flags;
2069 struct ipr_resource_entry *res;
2070 struct scsi_device *sdev;
2071 struct ipr_dump *dump;
2072 struct ipr_ioa_cfg *ioa_cfg = data;
2073 u8 bus, target, lun;
2074 int did_work;
2075
2076 ENTER;
2077 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2078
2079 if (ioa_cfg->sdt_state == GET_DUMP) {
2080 dump = ioa_cfg->dump;
2081 if (!dump) {
2082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2083 return;
2084 }
2085 kref_get(&dump->kref);
2086 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2087 ipr_get_ioa_dump(ioa_cfg, dump);
2088 kref_put(&dump->kref, ipr_release_dump);
2089
2090 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2091 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2092 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2093 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2094 return;
2095 }
2096
2097restart:
2098 do {
2099 did_work = 0;
2100 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2101 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2102 return;
2103 }
2104
2105 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2106 if (res->del_from_ml && res->sdev) {
2107 did_work = 1;
2108 sdev = res->sdev;
2109 if (!scsi_device_get(sdev)) {
2110 res->sdev = NULL;
2111 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2112 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2113 scsi_remove_device(sdev);
2114 scsi_device_put(sdev);
2115 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2116 }
2117 break;
2118 }
2119 }
2120 } while(did_work);
2121
2122 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2123 if (res->add_to_ml) {
2124 bus = res->cfgte.res_addr.bus;
2125 target = res->cfgte.res_addr.target;
2126 lun = res->cfgte.res_addr.lun;
2127 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2128 scsi_add_device(ioa_cfg->host, bus, target, lun);
2129 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2130 goto restart;
2131 }
2132 }
2133
2134 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2135 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL);
2136 LEAVE;
2137}
2138
2139#ifdef CONFIG_SCSI_IPR_TRACE
2140/**
2141 * ipr_read_trace - Dump the adapter trace
2142 * @kobj: kobject struct
2143 * @buf: buffer
2144 * @off: offset
2145 * @count: buffer size
2146 *
2147 * Return value:
2148 * number of bytes printed to buffer
2149 **/
2150static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2151 loff_t off, size_t count)
2152{
2153 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2154 struct Scsi_Host *shost = class_to_shost(cdev);
2155 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2156 unsigned long lock_flags = 0;
2157 int size = IPR_TRACE_SIZE;
2158 char *src = (char *)ioa_cfg->trace;
2159
2160 if (off > size)
2161 return 0;
2162 if (off + count > size) {
2163 size -= off;
2164 count = size;
2165 }
2166
2167 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2168 memcpy(buf, &src[off], count);
2169 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2170 return count;
2171}
2172
2173static struct bin_attribute ipr_trace_attr = {
2174 .attr = {
2175 .name = "trace",
2176 .mode = S_IRUGO,
2177 },
2178 .size = 0,
2179 .read = ipr_read_trace,
2180};
2181#endif
2182
brking@us.ibm.com62275042005-11-01 17:01:14 -06002183static const struct {
2184 enum ipr_cache_state state;
2185 char *name;
2186} cache_state [] = {
2187 { CACHE_NONE, "none" },
2188 { CACHE_DISABLED, "disabled" },
2189 { CACHE_ENABLED, "enabled" }
2190};
2191
2192/**
2193 * ipr_show_write_caching - Show the write caching attribute
2194 * @class_dev: class device struct
2195 * @buf: buffer
2196 *
2197 * Return value:
2198 * number of bytes printed to buffer
2199 **/
2200static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2201{
2202 struct Scsi_Host *shost = class_to_shost(class_dev);
2203 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2204 unsigned long lock_flags = 0;
2205 int i, len = 0;
2206
2207 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2208 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2209 if (cache_state[i].state == ioa_cfg->cache_state) {
2210 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2211 break;
2212 }
2213 }
2214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2215 return len;
2216}
2217
2218
2219/**
2220 * ipr_store_write_caching - Enable/disable adapter write cache
2221 * @class_dev: class_device struct
2222 * @buf: buffer
2223 * @count: buffer size
2224 *
2225 * This function will enable/disable adapter write cache.
2226 *
2227 * Return value:
2228 * count on success / other on failure
2229 **/
2230static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2231 const char *buf, size_t count)
2232{
2233 struct Scsi_Host *shost = class_to_shost(class_dev);
2234 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2235 unsigned long lock_flags = 0;
2236 enum ipr_cache_state new_state = CACHE_INVALID;
2237 int i;
2238
2239 if (!capable(CAP_SYS_ADMIN))
2240 return -EACCES;
2241 if (ioa_cfg->cache_state == CACHE_NONE)
2242 return -EINVAL;
2243
2244 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2245 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2246 new_state = cache_state[i].state;
2247 break;
2248 }
2249 }
2250
2251 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2252 return -EINVAL;
2253
2254 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2255 if (ioa_cfg->cache_state == new_state) {
2256 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2257 return count;
2258 }
2259
2260 ioa_cfg->cache_state = new_state;
2261 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2262 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2263 if (!ioa_cfg->in_reset_reload)
2264 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2265 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2266 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2267
2268 return count;
2269}
2270
2271static struct class_device_attribute ipr_ioa_cache_attr = {
2272 .attr = {
2273 .name = "write_cache",
2274 .mode = S_IRUGO | S_IWUSR,
2275 },
2276 .show = ipr_show_write_caching,
2277 .store = ipr_store_write_caching
2278};
2279
Linus Torvalds1da177e2005-04-16 15:20:36 -07002280/**
2281 * ipr_show_fw_version - Show the firmware version
2282 * @class_dev: class device struct
2283 * @buf: buffer
2284 *
2285 * Return value:
2286 * number of bytes printed to buffer
2287 **/
2288static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2289{
2290 struct Scsi_Host *shost = class_to_shost(class_dev);
2291 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2292 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2293 unsigned long lock_flags = 0;
2294 int len;
2295
2296 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2297 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2298 ucode_vpd->major_release, ucode_vpd->card_type,
2299 ucode_vpd->minor_release[0],
2300 ucode_vpd->minor_release[1]);
2301 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2302 return len;
2303}
2304
2305static struct class_device_attribute ipr_fw_version_attr = {
2306 .attr = {
2307 .name = "fw_version",
2308 .mode = S_IRUGO,
2309 },
2310 .show = ipr_show_fw_version,
2311};
2312
2313/**
2314 * ipr_show_log_level - Show the adapter's error logging level
2315 * @class_dev: class device struct
2316 * @buf: buffer
2317 *
2318 * Return value:
2319 * number of bytes printed to buffer
2320 **/
2321static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2322{
2323 struct Scsi_Host *shost = class_to_shost(class_dev);
2324 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2325 unsigned long lock_flags = 0;
2326 int len;
2327
2328 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2329 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2331 return len;
2332}
2333
2334/**
2335 * ipr_store_log_level - Change the adapter's error logging level
2336 * @class_dev: class device struct
2337 * @buf: buffer
2338 *
2339 * Return value:
2340 * number of bytes printed to buffer
2341 **/
2342static ssize_t ipr_store_log_level(struct class_device *class_dev,
2343 const char *buf, size_t count)
2344{
2345 struct Scsi_Host *shost = class_to_shost(class_dev);
2346 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2347 unsigned long lock_flags = 0;
2348
2349 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2350 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2351 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2352 return strlen(buf);
2353}
2354
2355static struct class_device_attribute ipr_log_level_attr = {
2356 .attr = {
2357 .name = "log_level",
2358 .mode = S_IRUGO | S_IWUSR,
2359 },
2360 .show = ipr_show_log_level,
2361 .store = ipr_store_log_level
2362};
2363
2364/**
2365 * ipr_store_diagnostics - IOA Diagnostics interface
2366 * @class_dev: class_device struct
2367 * @buf: buffer
2368 * @count: buffer size
2369 *
2370 * This function will reset the adapter and wait a reasonable
2371 * amount of time for any errors that the adapter might log.
2372 *
2373 * Return value:
2374 * count on success / other on failure
2375 **/
2376static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2377 const char *buf, size_t count)
2378{
2379 struct Scsi_Host *shost = class_to_shost(class_dev);
2380 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2381 unsigned long lock_flags = 0;
2382 int rc = count;
2383
2384 if (!capable(CAP_SYS_ADMIN))
2385 return -EACCES;
2386
2387 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2388 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2389 ioa_cfg->errors_logged = 0;
2390 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2391
2392 if (ioa_cfg->in_reset_reload) {
2393 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2394 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2395
2396 /* Wait for a second for any errors to be logged */
2397 msleep(1000);
2398 } else {
2399 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2400 return -EIO;
2401 }
2402
2403 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2404 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2405 rc = -EIO;
2406 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2407
2408 return rc;
2409}
2410
2411static struct class_device_attribute ipr_diagnostics_attr = {
2412 .attr = {
2413 .name = "run_diagnostics",
2414 .mode = S_IWUSR,
2415 },
2416 .store = ipr_store_diagnostics
2417};
2418
2419/**
brking@us.ibm.comf37eb542005-11-01 17:01:40 -06002420 * ipr_show_adapter_state - Show the adapter's state
2421 * @class_dev: class device struct
2422 * @buf: buffer
2423 *
2424 * Return value:
2425 * number of bytes printed to buffer
2426 **/
2427static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2428{
2429 struct Scsi_Host *shost = class_to_shost(class_dev);
2430 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2431 unsigned long lock_flags = 0;
2432 int len;
2433
2434 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2435 if (ioa_cfg->ioa_is_dead)
2436 len = snprintf(buf, PAGE_SIZE, "offline\n");
2437 else
2438 len = snprintf(buf, PAGE_SIZE, "online\n");
2439 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2440 return len;
2441}
2442
2443/**
2444 * ipr_store_adapter_state - Change adapter state
2445 * @class_dev: class_device struct
2446 * @buf: buffer
2447 * @count: buffer size
2448 *
2449 * This function will change the adapter's state.
2450 *
2451 * Return value:
2452 * count on success / other on failure
2453 **/
2454static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2455 const char *buf, size_t count)
2456{
2457 struct Scsi_Host *shost = class_to_shost(class_dev);
2458 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2459 unsigned long lock_flags;
2460 int result = count;
2461
2462 if (!capable(CAP_SYS_ADMIN))
2463 return -EACCES;
2464
2465 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2466 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2467 ioa_cfg->ioa_is_dead = 0;
2468 ioa_cfg->reset_retries = 0;
2469 ioa_cfg->in_ioa_bringdown = 0;
2470 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2471 }
2472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2473 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2474
2475 return result;
2476}
2477
2478static struct class_device_attribute ipr_ioa_state_attr = {
2479 .attr = {
2480 .name = "state",
2481 .mode = S_IRUGO | S_IWUSR,
2482 },
2483 .show = ipr_show_adapter_state,
2484 .store = ipr_store_adapter_state
2485};
2486
2487/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07002488 * ipr_store_reset_adapter - Reset the adapter
2489 * @class_dev: class_device struct
2490 * @buf: buffer
2491 * @count: buffer size
2492 *
2493 * This function will reset the adapter.
2494 *
2495 * Return value:
2496 * count on success / other on failure
2497 **/
2498static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2499 const char *buf, size_t count)
2500{
2501 struct Scsi_Host *shost = class_to_shost(class_dev);
2502 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2503 unsigned long lock_flags;
2504 int result = count;
2505
2506 if (!capable(CAP_SYS_ADMIN))
2507 return -EACCES;
2508
2509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2510 if (!ioa_cfg->in_reset_reload)
2511 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2513 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2514
2515 return result;
2516}
2517
2518static struct class_device_attribute ipr_ioa_reset_attr = {
2519 .attr = {
2520 .name = "reset_host",
2521 .mode = S_IWUSR,
2522 },
2523 .store = ipr_store_reset_adapter
2524};
2525
2526/**
2527 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2528 * @buf_len: buffer length
2529 *
2530 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2531 * list to use for microcode download
2532 *
2533 * Return value:
2534 * pointer to sglist / NULL on failure
2535 **/
2536static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2537{
2538 int sg_size, order, bsize_elem, num_elem, i, j;
2539 struct ipr_sglist *sglist;
2540 struct scatterlist *scatterlist;
2541 struct page *page;
2542
2543 /* Get the minimum size per scatter/gather element */
2544 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2545
2546 /* Get the actual size per element */
2547 order = get_order(sg_size);
2548
2549 /* Determine the actual number of bytes per element */
2550 bsize_elem = PAGE_SIZE * (1 << order);
2551
2552 /* Determine the actual number of sg entries needed */
2553 if (buf_len % bsize_elem)
2554 num_elem = (buf_len / bsize_elem) + 1;
2555 else
2556 num_elem = buf_len / bsize_elem;
2557
2558 /* Allocate a scatter/gather list for the DMA */
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06002559 sglist = kzalloc(sizeof(struct ipr_sglist) +
Linus Torvalds1da177e2005-04-16 15:20:36 -07002560 (sizeof(struct scatterlist) * (num_elem - 1)),
2561 GFP_KERNEL);
2562
2563 if (sglist == NULL) {
2564 ipr_trace;
2565 return NULL;
2566 }
2567
Linus Torvalds1da177e2005-04-16 15:20:36 -07002568 scatterlist = sglist->scatterlist;
2569
2570 sglist->order = order;
2571 sglist->num_sg = num_elem;
2572
2573 /* Allocate a bunch of sg elements */
2574 for (i = 0; i < num_elem; i++) {
2575 page = alloc_pages(GFP_KERNEL, order);
2576 if (!page) {
2577 ipr_trace;
2578
2579 /* Free up what we already allocated */
2580 for (j = i - 1; j >= 0; j--)
2581 __free_pages(scatterlist[j].page, order);
2582 kfree(sglist);
2583 return NULL;
2584 }
2585
2586 scatterlist[i].page = page;
2587 }
2588
2589 return sglist;
2590}
2591
2592/**
2593 * ipr_free_ucode_buffer - Frees a microcode download buffer
2594 * @p_dnld: scatter/gather list pointer
2595 *
2596 * Free a DMA'able ucode download buffer previously allocated with
2597 * ipr_alloc_ucode_buffer
2598 *
2599 * Return value:
2600 * nothing
2601 **/
2602static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2603{
2604 int i;
2605
2606 for (i = 0; i < sglist->num_sg; i++)
2607 __free_pages(sglist->scatterlist[i].page, sglist->order);
2608
2609 kfree(sglist);
2610}
2611
2612/**
2613 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2614 * @sglist: scatter/gather list pointer
2615 * @buffer: buffer pointer
2616 * @len: buffer length
2617 *
2618 * Copy a microcode image from a user buffer into a buffer allocated by
2619 * ipr_alloc_ucode_buffer
2620 *
2621 * Return value:
2622 * 0 on success / other on failure
2623 **/
2624static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2625 u8 *buffer, u32 len)
2626{
2627 int bsize_elem, i, result = 0;
2628 struct scatterlist *scatterlist;
2629 void *kaddr;
2630
2631 /* Determine the actual number of bytes per element */
2632 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2633
2634 scatterlist = sglist->scatterlist;
2635
2636 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2637 kaddr = kmap(scatterlist[i].page);
2638 memcpy(kaddr, buffer, bsize_elem);
2639 kunmap(scatterlist[i].page);
2640
2641 scatterlist[i].length = bsize_elem;
2642
2643 if (result != 0) {
2644 ipr_trace;
2645 return result;
2646 }
2647 }
2648
2649 if (len % bsize_elem) {
2650 kaddr = kmap(scatterlist[i].page);
2651 memcpy(kaddr, buffer, len % bsize_elem);
2652 kunmap(scatterlist[i].page);
2653
2654 scatterlist[i].length = len % bsize_elem;
2655 }
2656
2657 sglist->buffer_len = len;
2658 return result;
2659}
2660
2661/**
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002662 * ipr_build_ucode_ioadl - Build a microcode download IOADL
Linus Torvalds1da177e2005-04-16 15:20:36 -07002663 * @ipr_cmd: ipr command struct
2664 * @sglist: scatter/gather list
Linus Torvalds1da177e2005-04-16 15:20:36 -07002665 *
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002666 * Builds a microcode download IOA data list (IOADL).
Linus Torvalds1da177e2005-04-16 15:20:36 -07002667 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07002668 **/
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002669static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2670 struct ipr_sglist *sglist)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002671{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002672 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2673 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2674 struct scatterlist *scatterlist = sglist->scatterlist;
2675 int i;
2676
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002677 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002678 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002679 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002680 ioarcb->write_ioadl_len =
2681 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2682
2683 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2684 ioadl[i].flags_and_data_len =
2685 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2686 ioadl[i].address =
2687 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2688 }
2689
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002690 ioadl[i-1].flags_and_data_len |=
2691 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2692}
2693
2694/**
2695 * ipr_update_ioa_ucode - Update IOA's microcode
2696 * @ioa_cfg: ioa config struct
2697 * @sglist: scatter/gather list
2698 *
2699 * Initiate an adapter reset to update the IOA's microcode
2700 *
2701 * Return value:
2702 * 0 on success / -EIO on failure
2703 **/
2704static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2705 struct ipr_sglist *sglist)
2706{
2707 unsigned long lock_flags;
2708
2709 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2710
2711 if (ioa_cfg->ucode_sglist) {
2712 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2713 dev_err(&ioa_cfg->pdev->dev,
2714 "Microcode download already in progress\n");
Linus Torvalds1da177e2005-04-16 15:20:36 -07002715 return -EIO;
2716 }
2717
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002718 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2719 sglist->num_sg, DMA_TO_DEVICE);
2720
2721 if (!sglist->num_dma_sg) {
2722 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2723 dev_err(&ioa_cfg->pdev->dev,
2724 "Failed to map microcode download buffer!\n");
2725 return -EIO;
2726 }
2727
2728 ioa_cfg->ucode_sglist = sglist;
2729 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2730 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2731 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2732
2733 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2734 ioa_cfg->ucode_sglist = NULL;
2735 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002736 return 0;
2737}
2738
2739/**
2740 * ipr_store_update_fw - Update the firmware on the adapter
2741 * @class_dev: class_device struct
2742 * @buf: buffer
2743 * @count: buffer size
2744 *
2745 * This function will update the firmware on the adapter.
2746 *
2747 * Return value:
2748 * count on success / other on failure
2749 **/
2750static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2751 const char *buf, size_t count)
2752{
2753 struct Scsi_Host *shost = class_to_shost(class_dev);
2754 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2755 struct ipr_ucode_image_header *image_hdr;
2756 const struct firmware *fw_entry;
2757 struct ipr_sglist *sglist;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002758 char fname[100];
2759 char *src;
2760 int len, result, dnld_size;
2761
2762 if (!capable(CAP_SYS_ADMIN))
2763 return -EACCES;
2764
2765 len = snprintf(fname, 99, "%s", buf);
2766 fname[len-1] = '\0';
2767
2768 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2769 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2770 return -EIO;
2771 }
2772
2773 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2774
2775 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2776 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2777 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2778 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2779 release_firmware(fw_entry);
2780 return -EINVAL;
2781 }
2782
2783 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2784 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2785 sglist = ipr_alloc_ucode_buffer(dnld_size);
2786
2787 if (!sglist) {
2788 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2789 release_firmware(fw_entry);
2790 return -ENOMEM;
2791 }
2792
2793 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2794
2795 if (result) {
2796 dev_err(&ioa_cfg->pdev->dev,
2797 "Microcode buffer copy to DMA buffer failed\n");
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002798 goto out;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002799 }
2800
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002801 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002802
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002803 if (!result)
2804 result = count;
2805out:
Linus Torvalds1da177e2005-04-16 15:20:36 -07002806 ipr_free_ucode_buffer(sglist);
2807 release_firmware(fw_entry);
brking@us.ibm.com12baa422005-11-01 17:01:27 -06002808 return result;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002809}
2810
2811static struct class_device_attribute ipr_update_fw_attr = {
2812 .attr = {
2813 .name = "update_fw",
2814 .mode = S_IWUSR,
2815 },
2816 .store = ipr_store_update_fw
2817};
2818
2819static struct class_device_attribute *ipr_ioa_attrs[] = {
2820 &ipr_fw_version_attr,
2821 &ipr_log_level_attr,
2822 &ipr_diagnostics_attr,
brking@us.ibm.comf37eb542005-11-01 17:01:40 -06002823 &ipr_ioa_state_attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002824 &ipr_ioa_reset_attr,
2825 &ipr_update_fw_attr,
brking@us.ibm.com62275042005-11-01 17:01:14 -06002826 &ipr_ioa_cache_attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002827 NULL,
2828};
2829
2830#ifdef CONFIG_SCSI_IPR_DUMP
2831/**
2832 * ipr_read_dump - Dump the adapter
2833 * @kobj: kobject struct
2834 * @buf: buffer
2835 * @off: offset
2836 * @count: buffer size
2837 *
2838 * Return value:
2839 * number of bytes printed to buffer
2840 **/
2841static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2842 loff_t off, size_t count)
2843{
2844 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2845 struct Scsi_Host *shost = class_to_shost(cdev);
2846 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2847 struct ipr_dump *dump;
2848 unsigned long lock_flags = 0;
2849 char *src;
2850 int len;
2851 size_t rc = count;
2852
2853 if (!capable(CAP_SYS_ADMIN))
2854 return -EACCES;
2855
2856 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2857 dump = ioa_cfg->dump;
2858
2859 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2860 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2861 return 0;
2862 }
2863 kref_get(&dump->kref);
2864 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2865
2866 if (off > dump->driver_dump.hdr.len) {
2867 kref_put(&dump->kref, ipr_release_dump);
2868 return 0;
2869 }
2870
2871 if (off + count > dump->driver_dump.hdr.len) {
2872 count = dump->driver_dump.hdr.len - off;
2873 rc = count;
2874 }
2875
2876 if (count && off < sizeof(dump->driver_dump)) {
2877 if (off + count > sizeof(dump->driver_dump))
2878 len = sizeof(dump->driver_dump) - off;
2879 else
2880 len = count;
2881 src = (u8 *)&dump->driver_dump + off;
2882 memcpy(buf, src, len);
2883 buf += len;
2884 off += len;
2885 count -= len;
2886 }
2887
2888 off -= sizeof(dump->driver_dump);
2889
2890 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2891 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2892 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2893 else
2894 len = count;
2895 src = (u8 *)&dump->ioa_dump + off;
2896 memcpy(buf, src, len);
2897 buf += len;
2898 off += len;
2899 count -= len;
2900 }
2901
2902 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2903
2904 while (count) {
2905 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2906 len = PAGE_ALIGN(off) - off;
2907 else
2908 len = count;
2909 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2910 src += off & ~PAGE_MASK;
2911 memcpy(buf, src, len);
2912 buf += len;
2913 off += len;
2914 count -= len;
2915 }
2916
2917 kref_put(&dump->kref, ipr_release_dump);
2918 return rc;
2919}
2920
2921/**
2922 * ipr_alloc_dump - Prepare for adapter dump
2923 * @ioa_cfg: ioa config struct
2924 *
2925 * Return value:
2926 * 0 on success / other on failure
2927 **/
2928static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2929{
2930 struct ipr_dump *dump;
2931 unsigned long lock_flags = 0;
2932
2933 ENTER;
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06002934 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002935
2936 if (!dump) {
2937 ipr_err("Dump memory allocation failed\n");
2938 return -ENOMEM;
2939 }
2940
Linus Torvalds1da177e2005-04-16 15:20:36 -07002941 kref_init(&dump->kref);
2942 dump->ioa_cfg = ioa_cfg;
2943
2944 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2945
2946 if (INACTIVE != ioa_cfg->sdt_state) {
2947 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2948 kfree(dump);
2949 return 0;
2950 }
2951
2952 ioa_cfg->dump = dump;
2953 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2954 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2955 ioa_cfg->dump_taken = 1;
2956 schedule_work(&ioa_cfg->work_q);
2957 }
2958 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2959
2960 LEAVE;
2961 return 0;
2962}
2963
2964/**
2965 * ipr_free_dump - Free adapter dump memory
2966 * @ioa_cfg: ioa config struct
2967 *
2968 * Return value:
2969 * 0 on success / other on failure
2970 **/
2971static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
2972{
2973 struct ipr_dump *dump;
2974 unsigned long lock_flags = 0;
2975
2976 ENTER;
2977
2978 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2979 dump = ioa_cfg->dump;
2980 if (!dump) {
2981 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2982 return 0;
2983 }
2984
2985 ioa_cfg->dump = NULL;
2986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2987
2988 kref_put(&dump->kref, ipr_release_dump);
2989
2990 LEAVE;
2991 return 0;
2992}
2993
2994/**
2995 * ipr_write_dump - Setup dump state of adapter
2996 * @kobj: kobject struct
2997 * @buf: buffer
2998 * @off: offset
2999 * @count: buffer size
3000 *
3001 * Return value:
3002 * number of bytes printed to buffer
3003 **/
3004static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3005 loff_t off, size_t count)
3006{
3007 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3008 struct Scsi_Host *shost = class_to_shost(cdev);
3009 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3010 int rc;
3011
3012 if (!capable(CAP_SYS_ADMIN))
3013 return -EACCES;
3014
3015 if (buf[0] == '1')
3016 rc = ipr_alloc_dump(ioa_cfg);
3017 else if (buf[0] == '0')
3018 rc = ipr_free_dump(ioa_cfg);
3019 else
3020 return -EINVAL;
3021
3022 if (rc)
3023 return rc;
3024 else
3025 return count;
3026}
3027
3028static struct bin_attribute ipr_dump_attr = {
3029 .attr = {
3030 .name = "dump",
3031 .mode = S_IRUSR | S_IWUSR,
3032 },
3033 .size = 0,
3034 .read = ipr_read_dump,
3035 .write = ipr_write_dump
3036};
3037#else
3038static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3039#endif
3040
3041/**
3042 * ipr_change_queue_depth - Change the device's queue depth
3043 * @sdev: scsi device struct
3044 * @qdepth: depth to set
3045 *
3046 * Return value:
3047 * actual depth set
3048 **/
3049static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3050{
3051 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3052 return sdev->queue_depth;
3053}
3054
3055/**
3056 * ipr_change_queue_type - Change the device's queue type
3057 * @dsev: scsi device struct
3058 * @tag_type: type of tags to use
3059 *
3060 * Return value:
3061 * actual queue type set
3062 **/
3063static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3064{
3065 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3066 struct ipr_resource_entry *res;
3067 unsigned long lock_flags = 0;
3068
3069 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3070 res = (struct ipr_resource_entry *)sdev->hostdata;
3071
3072 if (res) {
3073 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3074 /*
3075 * We don't bother quiescing the device here since the
3076 * adapter firmware does it for us.
3077 */
3078 scsi_set_tag_type(sdev, tag_type);
3079
3080 if (tag_type)
3081 scsi_activate_tcq(sdev, sdev->queue_depth);
3082 else
3083 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3084 } else
3085 tag_type = 0;
3086 } else
3087 tag_type = 0;
3088
3089 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3090 return tag_type;
3091}
3092
3093/**
3094 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3095 * @dev: device struct
3096 * @buf: buffer
3097 *
3098 * Return value:
3099 * number of bytes printed to buffer
3100 **/
Yani Ioannou10523b32005-05-17 06:43:37 -04003101static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003102{
3103 struct scsi_device *sdev = to_scsi_device(dev);
3104 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3105 struct ipr_resource_entry *res;
3106 unsigned long lock_flags = 0;
3107 ssize_t len = -ENXIO;
3108
3109 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3110 res = (struct ipr_resource_entry *)sdev->hostdata;
3111 if (res)
3112 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3113 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3114 return len;
3115}
3116
3117static struct device_attribute ipr_adapter_handle_attr = {
3118 .attr = {
3119 .name = "adapter_handle",
3120 .mode = S_IRUSR,
3121 },
3122 .show = ipr_show_adapter_handle
3123};
3124
3125static struct device_attribute *ipr_dev_attrs[] = {
3126 &ipr_adapter_handle_attr,
3127 NULL,
3128};
3129
3130/**
3131 * ipr_biosparam - Return the HSC mapping
3132 * @sdev: scsi device struct
3133 * @block_device: block device pointer
3134 * @capacity: capacity of the device
3135 * @parm: Array containing returned HSC values.
3136 *
3137 * This function generates the HSC parms that fdisk uses.
3138 * We want to make sure we return something that places partitions
3139 * on 4k boundaries for best performance with the IOA.
3140 *
3141 * Return value:
3142 * 0 on success
3143 **/
3144static int ipr_biosparam(struct scsi_device *sdev,
3145 struct block_device *block_device,
3146 sector_t capacity, int *parm)
3147{
3148 int heads, sectors;
3149 sector_t cylinders;
3150
3151 heads = 128;
3152 sectors = 32;
3153
3154 cylinders = capacity;
3155 sector_div(cylinders, (128 * 32));
3156
3157 /* return result */
3158 parm[0] = heads;
3159 parm[1] = sectors;
3160 parm[2] = cylinders;
3161
3162 return 0;
3163}
3164
3165/**
3166 * ipr_slave_destroy - Unconfigure a SCSI device
3167 * @sdev: scsi device struct
3168 *
3169 * Return value:
3170 * nothing
3171 **/
3172static void ipr_slave_destroy(struct scsi_device *sdev)
3173{
3174 struct ipr_resource_entry *res;
3175 struct ipr_ioa_cfg *ioa_cfg;
3176 unsigned long lock_flags = 0;
3177
3178 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3179
3180 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3181 res = (struct ipr_resource_entry *) sdev->hostdata;
3182 if (res) {
3183 sdev->hostdata = NULL;
3184 res->sdev = NULL;
3185 }
3186 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3187}
3188
3189/**
3190 * ipr_slave_configure - Configure a SCSI device
3191 * @sdev: scsi device struct
3192 *
3193 * This function configures the specified scsi device.
3194 *
3195 * Return value:
3196 * 0 on success
3197 **/
3198static int ipr_slave_configure(struct scsi_device *sdev)
3199{
3200 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3201 struct ipr_resource_entry *res;
3202 unsigned long lock_flags = 0;
3203
3204 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3205 res = sdev->hostdata;
3206 if (res) {
3207 if (ipr_is_af_dasd_device(res))
3208 sdev->type = TYPE_RAID;
brking@us.ibm.com0726ce22005-11-01 17:01:01 -06003209 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07003210 sdev->scsi_level = 4;
brking@us.ibm.com0726ce22005-11-01 17:01:01 -06003211 sdev->no_uld_attach = 1;
3212 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07003213 if (ipr_is_vset_device(res)) {
3214 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3215 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3216 }
3217 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
3218 sdev->allow_restart = 1;
3219 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3220 }
3221 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3222 return 0;
3223}
3224
3225/**
3226 * ipr_slave_alloc - Prepare for commands to a device.
3227 * @sdev: scsi device struct
3228 *
3229 * This function saves a pointer to the resource entry
3230 * in the scsi device struct if the device exists. We
3231 * can then use this pointer in ipr_queuecommand when
3232 * handling new commands.
3233 *
3234 * Return value:
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003235 * 0 on success / -ENXIO if device does not exist
Linus Torvalds1da177e2005-04-16 15:20:36 -07003236 **/
3237static int ipr_slave_alloc(struct scsi_device *sdev)
3238{
3239 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3240 struct ipr_resource_entry *res;
3241 unsigned long lock_flags;
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003242 int rc = -ENXIO;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003243
3244 sdev->hostdata = NULL;
3245
3246 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3247
3248 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3249 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3250 (res->cfgte.res_addr.target == sdev->id) &&
3251 (res->cfgte.res_addr.lun == sdev->lun)) {
3252 res->sdev = sdev;
3253 res->add_to_ml = 0;
3254 res->in_erp = 0;
3255 sdev->hostdata = res;
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06003256 if (!ipr_is_naca_model(res))
3257 res->needs_sync_complete = 1;
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003258 rc = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003259 break;
3260 }
3261 }
3262
3263 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3264
brking@us.ibm.com692aebf2005-11-01 17:01:07 -06003265 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003266}
3267
3268/**
3269 * ipr_eh_host_reset - Reset the host adapter
3270 * @scsi_cmd: scsi command struct
3271 *
3272 * Return value:
3273 * SUCCESS / FAILED
3274 **/
Jeff Garzik df0ae242005-05-28 07:57:14 -04003275static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003276{
3277 struct ipr_ioa_cfg *ioa_cfg;
3278 int rc;
3279
3280 ENTER;
3281 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3282
3283 dev_err(&ioa_cfg->pdev->dev,
3284 "Adapter being reset as a result of error recovery.\n");
3285
3286 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3287 ioa_cfg->sdt_state = GET_DUMP;
3288
3289 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3290
3291 LEAVE;
3292 return rc;
3293}
3294
Jeff Garzik df0ae242005-05-28 07:57:14 -04003295static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3296{
3297 int rc;
3298
3299 spin_lock_irq(cmd->device->host->host_lock);
3300 rc = __ipr_eh_host_reset(cmd);
3301 spin_unlock_irq(cmd->device->host->host_lock);
3302
3303 return rc;
3304}
3305
Linus Torvalds1da177e2005-04-16 15:20:36 -07003306/**
3307 * ipr_eh_dev_reset - Reset the device
3308 * @scsi_cmd: scsi command struct
3309 *
3310 * This function issues a device reset to the affected device.
3311 * A LUN reset will be sent to the device first. If that does
3312 * not work, a target reset will be sent.
3313 *
3314 * Return value:
3315 * SUCCESS / FAILED
3316 **/
Jeff Garzik 94d0e7b82005-05-28 07:55:48 -04003317static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003318{
3319 struct ipr_cmnd *ipr_cmd;
3320 struct ipr_ioa_cfg *ioa_cfg;
3321 struct ipr_resource_entry *res;
3322 struct ipr_cmd_pkt *cmd_pkt;
3323 u32 ioasc;
3324
3325 ENTER;
3326 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3327 res = scsi_cmd->device->hostdata;
3328
brking@us.ibm.comeeb883072005-11-01 17:02:29 -06003329 if (!res)
Linus Torvalds1da177e2005-04-16 15:20:36 -07003330 return FAILED;
3331
3332 /*
3333 * If we are currently going through reset/reload, return failed. This will force the
3334 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3335 * reset to complete
3336 */
3337 if (ioa_cfg->in_reset_reload)
3338 return FAILED;
3339 if (ioa_cfg->ioa_is_dead)
3340 return FAILED;
3341
3342 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3343 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3344 if (ipr_cmd->scsi_cmd)
3345 ipr_cmd->done = ipr_scsi_eh_done;
3346 }
3347 }
3348
3349 res->resetting_device = 1;
3350
3351 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3352
3353 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3354 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3355 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3356 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3357
3358 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
3359 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3360
3361 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3362
3363 res->resetting_device = 0;
3364
3365 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3366
3367 LEAVE;
3368 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3369}
3370
Jeff Garzik 94d0e7b82005-05-28 07:55:48 -04003371static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3372{
3373 int rc;
3374
3375 spin_lock_irq(cmd->device->host->host_lock);
3376 rc = __ipr_eh_dev_reset(cmd);
3377 spin_unlock_irq(cmd->device->host->host_lock);
3378
3379 return rc;
3380}
3381
Linus Torvalds1da177e2005-04-16 15:20:36 -07003382/**
3383 * ipr_bus_reset_done - Op done function for bus reset.
3384 * @ipr_cmd: ipr command struct
3385 *
3386 * This function is the op done function for a bus reset
3387 *
3388 * Return value:
3389 * none
3390 **/
3391static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3392{
3393 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3394 struct ipr_resource_entry *res;
3395
3396 ENTER;
3397 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3398 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3399 sizeof(res->cfgte.res_handle))) {
3400 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3401 break;
3402 }
3403 }
3404
3405 /*
3406 * If abort has not completed, indicate the reset has, else call the
3407 * abort's done function to wake the sleeping eh thread
3408 */
3409 if (ipr_cmd->sibling->sibling)
3410 ipr_cmd->sibling->sibling = NULL;
3411 else
3412 ipr_cmd->sibling->done(ipr_cmd->sibling);
3413
3414 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3415 LEAVE;
3416}
3417
3418/**
3419 * ipr_abort_timeout - An abort task has timed out
3420 * @ipr_cmd: ipr command struct
3421 *
3422 * This function handles when an abort task times out. If this
3423 * happens we issue a bus reset since we have resources tied
3424 * up that must be freed before returning to the midlayer.
3425 *
3426 * Return value:
3427 * none
3428 **/
3429static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3430{
3431 struct ipr_cmnd *reset_cmd;
3432 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3433 struct ipr_cmd_pkt *cmd_pkt;
3434 unsigned long lock_flags = 0;
3435
3436 ENTER;
3437 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3438 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3439 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3440 return;
3441 }
3442
3443 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3444 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3445 ipr_cmd->sibling = reset_cmd;
3446 reset_cmd->sibling = ipr_cmd;
3447 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3448 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3449 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3450 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3451 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3452
3453 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3454 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3455 LEAVE;
3456}
3457
3458/**
3459 * ipr_cancel_op - Cancel specified op
3460 * @scsi_cmd: scsi command struct
3461 *
3462 * This function cancels specified op.
3463 *
3464 * Return value:
3465 * SUCCESS / FAILED
3466 **/
3467static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3468{
3469 struct ipr_cmnd *ipr_cmd;
3470 struct ipr_ioa_cfg *ioa_cfg;
3471 struct ipr_resource_entry *res;
3472 struct ipr_cmd_pkt *cmd_pkt;
3473 u32 ioasc;
3474 int op_found = 0;
3475
3476 ENTER;
3477 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3478 res = scsi_cmd->device->hostdata;
3479
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003480 /* If we are currently going through reset/reload, return failed.
3481 * This will force the mid-layer to call ipr_eh_host_reset,
3482 * which will then go to sleep and wait for the reset to complete
3483 */
3484 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3485 return FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003486 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3487 return FAILED;
3488
3489 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3490 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3491 ipr_cmd->done = ipr_scsi_eh_done;
3492 op_found = 1;
3493 break;
3494 }
3495 }
3496
3497 if (!op_found)
3498 return SUCCESS;
3499
3500 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3501 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3502 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3503 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3504 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3505 ipr_cmd->u.sdev = scsi_cmd->device;
3506
3507 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3508 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3509 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3510
3511 /*
3512 * If the abort task timed out and we sent a bus reset, we will get
3513 * one the following responses to the abort
3514 */
3515 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3516 ioasc = 0;
3517 ipr_trace;
3518 }
3519
3520 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06003521 if (!ipr_is_naca_model(res))
3522 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003523
3524 LEAVE;
3525 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3526}
3527
3528/**
3529 * ipr_eh_abort - Abort a single op
3530 * @scsi_cmd: scsi command struct
3531 *
3532 * Return value:
3533 * SUCCESS / FAILED
3534 **/
3535static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3536{
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003537 unsigned long flags;
3538 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003539
3540 ENTER;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003541
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003542 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3543 rc = ipr_cancel_op(scsi_cmd);
3544 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003545
3546 LEAVE;
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003547 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003548}
3549
3550/**
3551 * ipr_handle_other_interrupt - Handle "other" interrupts
3552 * @ioa_cfg: ioa config struct
3553 * @int_reg: interrupt register
3554 *
3555 * Return value:
3556 * IRQ_NONE / IRQ_HANDLED
3557 **/
3558static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3559 volatile u32 int_reg)
3560{
3561 irqreturn_t rc = IRQ_HANDLED;
3562
3563 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3564 /* Mask the interrupt */
3565 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3566
3567 /* Clear the interrupt */
3568 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3569 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3570
3571 list_del(&ioa_cfg->reset_cmd->queue);
3572 del_timer(&ioa_cfg->reset_cmd->timer);
3573 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3574 } else {
3575 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3576 ioa_cfg->ioa_unit_checked = 1;
3577 else
3578 dev_err(&ioa_cfg->pdev->dev,
3579 "Permanent IOA failure. 0x%08X\n", int_reg);
3580
3581 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3582 ioa_cfg->sdt_state = GET_DUMP;
3583
3584 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3585 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3586 }
3587
3588 return rc;
3589}
3590
3591/**
3592 * ipr_isr - Interrupt service routine
3593 * @irq: irq number
3594 * @devp: pointer to ioa config struct
3595 * @regs: pt_regs struct
3596 *
3597 * Return value:
3598 * IRQ_NONE / IRQ_HANDLED
3599 **/
3600static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3601{
3602 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3603 unsigned long lock_flags = 0;
3604 volatile u32 int_reg, int_mask_reg;
3605 u32 ioasc;
3606 u16 cmd_index;
3607 struct ipr_cmnd *ipr_cmd;
3608 irqreturn_t rc = IRQ_NONE;
3609
3610 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3611
3612 /* If interrupts are disabled, ignore the interrupt */
3613 if (!ioa_cfg->allow_interrupts) {
3614 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3615 return IRQ_NONE;
3616 }
3617
3618 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3619 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3620
3621 /* If an interrupt on the adapter did not occur, ignore it */
3622 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3623 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3624 return IRQ_NONE;
3625 }
3626
3627 while (1) {
3628 ipr_cmd = NULL;
3629
3630 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3631 ioa_cfg->toggle_bit) {
3632
3633 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3634 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3635
3636 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3637 ioa_cfg->errors_logged++;
3638 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3639
3640 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3641 ioa_cfg->sdt_state = GET_DUMP;
3642
3643 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3644 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3645 return IRQ_HANDLED;
3646 }
3647
3648 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3649
3650 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3651
3652 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3653
3654 list_del(&ipr_cmd->queue);
3655 del_timer(&ipr_cmd->timer);
3656 ipr_cmd->done(ipr_cmd);
3657
3658 rc = IRQ_HANDLED;
3659
3660 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3661 ioa_cfg->hrrq_curr++;
3662 } else {
3663 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3664 ioa_cfg->toggle_bit ^= 1u;
3665 }
3666 }
3667
3668 if (ipr_cmd != NULL) {
3669 /* Clear the PCI interrupt */
3670 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3671 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3672 } else
3673 break;
3674 }
3675
3676 if (unlikely(rc == IRQ_NONE))
3677 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3678
3679 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3680 return rc;
3681}
3682
3683/**
3684 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3685 * @ioa_cfg: ioa config struct
3686 * @ipr_cmd: ipr command struct
3687 *
3688 * Return value:
3689 * 0 on success / -1 on failure
3690 **/
3691static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3692 struct ipr_cmnd *ipr_cmd)
3693{
3694 int i;
3695 struct scatterlist *sglist;
3696 u32 length;
3697 u32 ioadl_flags = 0;
3698 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3699 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3700 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3701
3702 length = scsi_cmd->request_bufflen;
3703
3704 if (length == 0)
3705 return 0;
3706
3707 if (scsi_cmd->use_sg) {
3708 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3709 scsi_cmd->request_buffer,
3710 scsi_cmd->use_sg,
3711 scsi_cmd->sc_data_direction);
3712
3713 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3714 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3715 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3716 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3717 ioarcb->write_ioadl_len =
3718 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3719 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3720 ioadl_flags = IPR_IOADL_FLAGS_READ;
3721 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3722 ioarcb->read_ioadl_len =
3723 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3724 }
3725
3726 sglist = scsi_cmd->request_buffer;
3727
3728 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3729 ioadl[i].flags_and_data_len =
3730 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3731 ioadl[i].address =
3732 cpu_to_be32(sg_dma_address(&sglist[i]));
3733 }
3734
3735 if (likely(ipr_cmd->dma_use_sg)) {
3736 ioadl[i-1].flags_and_data_len |=
3737 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3738 return 0;
3739 } else
3740 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3741 } else {
3742 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3743 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3744 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3745 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3746 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3747 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3748 ioadl_flags = IPR_IOADL_FLAGS_READ;
3749 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3750 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3751 }
3752
3753 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3754 scsi_cmd->request_buffer, length,
3755 scsi_cmd->sc_data_direction);
3756
3757 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3758 ipr_cmd->dma_use_sg = 1;
3759 ioadl[0].flags_and_data_len =
3760 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3761 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3762 return 0;
3763 } else
3764 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3765 }
3766
3767 return -1;
3768}
3769
3770/**
3771 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3772 * @scsi_cmd: scsi command struct
3773 *
3774 * Return value:
3775 * task attributes
3776 **/
3777static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3778{
3779 u8 tag[2];
3780 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3781
3782 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3783 switch (tag[0]) {
3784 case MSG_SIMPLE_TAG:
3785 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3786 break;
3787 case MSG_HEAD_TAG:
3788 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3789 break;
3790 case MSG_ORDERED_TAG:
3791 rc = IPR_FLAGS_LO_ORDERED_TASK;
3792 break;
3793 };
3794 }
3795
3796 return rc;
3797}
3798
3799/**
3800 * ipr_erp_done - Process completion of ERP for a device
3801 * @ipr_cmd: ipr command struct
3802 *
3803 * This function copies the sense buffer into the scsi_cmd
3804 * struct and pushes the scsi_done function.
3805 *
3806 * Return value:
3807 * nothing
3808 **/
3809static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3810{
3811 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3812 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3813 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3814 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3815
3816 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3817 scsi_cmd->result |= (DID_ERROR << 16);
3818 ipr_sdev_err(scsi_cmd->device,
3819 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3820 } else {
3821 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3822 SCSI_SENSE_BUFFERSIZE);
3823 }
3824
3825 if (res) {
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06003826 if (!ipr_is_naca_model(res))
3827 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003828 res->in_erp = 0;
3829 }
3830 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3831 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3832 scsi_cmd->scsi_done(scsi_cmd);
3833}
3834
3835/**
3836 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3837 * @ipr_cmd: ipr command struct
3838 *
3839 * Return value:
3840 * none
3841 **/
3842static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3843{
3844 struct ipr_ioarcb *ioarcb;
3845 struct ipr_ioasa *ioasa;
3846
3847 ioarcb = &ipr_cmd->ioarcb;
3848 ioasa = &ipr_cmd->ioasa;
3849
3850 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3851 ioarcb->write_data_transfer_length = 0;
3852 ioarcb->read_data_transfer_length = 0;
3853 ioarcb->write_ioadl_len = 0;
3854 ioarcb->read_ioadl_len = 0;
3855 ioasa->ioasc = 0;
3856 ioasa->residual_data_len = 0;
3857}
3858
3859/**
3860 * ipr_erp_request_sense - Send request sense to a device
3861 * @ipr_cmd: ipr command struct
3862 *
3863 * This function sends a request sense to a device as a result
3864 * of a check condition.
3865 *
3866 * Return value:
3867 * nothing
3868 **/
3869static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3870{
3871 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3872 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3873
3874 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3875 ipr_erp_done(ipr_cmd);
3876 return;
3877 }
3878
3879 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3880
3881 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3882 cmd_pkt->cdb[0] = REQUEST_SENSE;
3883 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3884 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3885 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3886 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3887
3888 ipr_cmd->ioadl[0].flags_and_data_len =
3889 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3890 ipr_cmd->ioadl[0].address =
3891 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3892
3893 ipr_cmd->ioarcb.read_ioadl_len =
3894 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3895 ipr_cmd->ioarcb.read_data_transfer_length =
3896 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3897
3898 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3899 IPR_REQUEST_SENSE_TIMEOUT * 2);
3900}
3901
3902/**
3903 * ipr_erp_cancel_all - Send cancel all to a device
3904 * @ipr_cmd: ipr command struct
3905 *
3906 * This function sends a cancel all to a device to clear the
3907 * queue. If we are running TCQ on the device, QERR is set to 1,
3908 * which means all outstanding ops have been dropped on the floor.
3909 * Cancel all will return them to us.
3910 *
3911 * Return value:
3912 * nothing
3913 **/
3914static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3915{
3916 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3917 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3918 struct ipr_cmd_pkt *cmd_pkt;
3919
3920 res->in_erp = 1;
3921
3922 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3923
3924 if (!scsi_get_tag_type(scsi_cmd->device)) {
3925 ipr_erp_request_sense(ipr_cmd);
3926 return;
3927 }
3928
3929 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3930 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3931 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3932
3933 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3934 IPR_CANCEL_ALL_TIMEOUT);
3935}
3936
3937/**
3938 * ipr_dump_ioasa - Dump contents of IOASA
3939 * @ioa_cfg: ioa config struct
3940 * @ipr_cmd: ipr command struct
3941 *
3942 * This function is invoked by the interrupt handler when ops
3943 * fail. It will log the IOASA if appropriate. Only called
3944 * for GPDD ops.
3945 *
3946 * Return value:
3947 * none
3948 **/
3949static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3950 struct ipr_cmnd *ipr_cmd)
3951{
3952 int i;
3953 u16 data_len;
3954 u32 ioasc;
3955 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3956 __be32 *ioasa_data = (__be32 *)ioasa;
3957 int error_index;
3958
3959 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3960
3961 if (0 == ioasc)
3962 return;
3963
3964 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3965 return;
3966
3967 error_index = ipr_get_error(ioasc);
3968
3969 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3970 /* Don't log an error if the IOA already logged one */
3971 if (ioasa->ilid != 0)
3972 return;
3973
3974 if (ipr_error_table[error_index].log_ioasa == 0)
3975 return;
3976 }
3977
3978 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3979 ipr_error_table[error_index].error);
3980
3981 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3982 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3983 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3984 "Device End state: %s Phase: %s\n",
3985 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3986 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3987 }
3988
3989 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3990 data_len = sizeof(struct ipr_ioasa);
3991 else
3992 data_len = be16_to_cpu(ioasa->ret_stat_len);
3993
3994 ipr_err("IOASA Dump:\n");
3995
3996 for (i = 0; i < data_len / 4; i += 4) {
3997 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3998 be32_to_cpu(ioasa_data[i]),
3999 be32_to_cpu(ioasa_data[i+1]),
4000 be32_to_cpu(ioasa_data[i+2]),
4001 be32_to_cpu(ioasa_data[i+3]));
4002 }
4003}
4004
4005/**
4006 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4007 * @ioasa: IOASA
4008 * @sense_buf: sense data buffer
4009 *
4010 * Return value:
4011 * none
4012 **/
4013static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4014{
4015 u32 failing_lba;
4016 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4017 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4018 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4019 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4020
4021 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4022
4023 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4024 return;
4025
4026 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4027
4028 if (ipr_is_vset_device(res) &&
4029 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4030 ioasa->u.vset.failing_lba_hi != 0) {
4031 sense_buf[0] = 0x72;
4032 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4033 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4034 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4035
4036 sense_buf[7] = 12;
4037 sense_buf[8] = 0;
4038 sense_buf[9] = 0x0A;
4039 sense_buf[10] = 0x80;
4040
4041 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4042
4043 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4044 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4045 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4046 sense_buf[15] = failing_lba & 0x000000ff;
4047
4048 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4049
4050 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4051 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4052 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4053 sense_buf[19] = failing_lba & 0x000000ff;
4054 } else {
4055 sense_buf[0] = 0x70;
4056 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4057 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4058 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4059
4060 /* Illegal request */
4061 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4062 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4063 sense_buf[7] = 10; /* additional length */
4064
4065 /* IOARCB was in error */
4066 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4067 sense_buf[15] = 0xC0;
4068 else /* Parameter data was invalid */
4069 sense_buf[15] = 0x80;
4070
4071 sense_buf[16] =
4072 ((IPR_FIELD_POINTER_MASK &
4073 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4074 sense_buf[17] =
4075 (IPR_FIELD_POINTER_MASK &
4076 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4077 } else {
4078 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4079 if (ipr_is_vset_device(res))
4080 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4081 else
4082 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4083
4084 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4085 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4086 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4087 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4088 sense_buf[6] = failing_lba & 0x000000ff;
4089 }
4090
4091 sense_buf[7] = 6; /* additional length */
4092 }
4093 }
4094}
4095
4096/**
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004097 * ipr_get_autosense - Copy autosense data to sense buffer
4098 * @ipr_cmd: ipr command struct
4099 *
4100 * This function copies the autosense buffer to the buffer
4101 * in the scsi_cmd, if there is autosense available.
4102 *
4103 * Return value:
4104 * 1 if autosense was available / 0 if not
4105 **/
4106static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4107{
4108 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4109
4110 if ((be32_to_cpu(ioasa->ioasc_specific) &
4111 (IPR_ADDITIONAL_STATUS_FMT | IPR_AUTOSENSE_VALID)) == 0)
4112 return 0;
4113
4114 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4115 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4116 SCSI_SENSE_BUFFERSIZE));
4117 return 1;
4118}
4119
4120/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004121 * ipr_erp_start - Process an error response for a SCSI op
4122 * @ioa_cfg: ioa config struct
4123 * @ipr_cmd: ipr command struct
4124 *
4125 * This function determines whether or not to initiate ERP
4126 * on the affected device.
4127 *
4128 * Return value:
4129 * nothing
4130 **/
4131static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4132 struct ipr_cmnd *ipr_cmd)
4133{
4134 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4135 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4136 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4137
4138 if (!res) {
4139 ipr_scsi_eh_done(ipr_cmd);
4140 return;
4141 }
4142
4143 if (ipr_is_gscsi(res))
4144 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
4145 else
4146 ipr_gen_sense(ipr_cmd);
4147
4148 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4149 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004150 if (ipr_is_naca_model(res))
4151 scsi_cmd->result |= (DID_ABORT << 16);
4152 else
4153 scsi_cmd->result |= (DID_IMM_RETRY << 16);
Linus Torvalds1da177e2005-04-16 15:20:36 -07004154 break;
4155 case IPR_IOASC_IR_RESOURCE_HANDLE:
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06004156 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004157 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4158 break;
4159 case IPR_IOASC_HW_SEL_TIMEOUT:
4160 scsi_cmd->result |= (DID_NO_CONNECT << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004161 if (!ipr_is_naca_model(res))
4162 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004163 break;
4164 case IPR_IOASC_SYNC_REQUIRED:
4165 if (!res->in_erp)
4166 res->needs_sync_complete = 1;
4167 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4168 break;
4169 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
brking@us.ibm.comb0df54b2005-11-01 17:01:47 -06004170 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
Linus Torvalds1da177e2005-04-16 15:20:36 -07004171 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4172 break;
4173 case IPR_IOASC_BUS_WAS_RESET:
4174 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4175 /*
4176 * Report the bus reset and ask for a retry. The device
4177 * will give CC/UA the next command.
4178 */
4179 if (!res->resetting_device)
4180 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4181 scsi_cmd->result |= (DID_ERROR << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004182 if (!ipr_is_naca_model(res))
4183 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004184 break;
4185 case IPR_IOASC_HW_DEV_BUS_STATUS:
4186 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4187 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004188 if (!ipr_get_autosense(ipr_cmd)) {
4189 if (!ipr_is_naca_model(res)) {
4190 ipr_erp_cancel_all(ipr_cmd);
4191 return;
4192 }
4193 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07004194 }
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004195 if (!ipr_is_naca_model(res))
4196 res->needs_sync_complete = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004197 break;
4198 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4199 break;
4200 default:
4201 scsi_cmd->result |= (DID_ERROR << 16);
brking@us.ibm.comee0a90f2005-11-01 17:02:22 -06004202 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
Linus Torvalds1da177e2005-04-16 15:20:36 -07004203 res->needs_sync_complete = 1;
4204 break;
4205 }
4206
4207 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4208 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4209 scsi_cmd->scsi_done(scsi_cmd);
4210}
4211
4212/**
4213 * ipr_scsi_done - mid-layer done function
4214 * @ipr_cmd: ipr command struct
4215 *
4216 * This function is invoked by the interrupt handler for
4217 * ops generated by the SCSI mid-layer
4218 *
4219 * Return value:
4220 * none
4221 **/
4222static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4223{
4224 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4225 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4226 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4227
4228 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4229
4230 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4231 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4232 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4233 scsi_cmd->scsi_done(scsi_cmd);
4234 } else
4235 ipr_erp_start(ioa_cfg, ipr_cmd);
4236}
4237
4238/**
4239 * ipr_save_ioafp_mode_select - Save adapters mode select data
4240 * @ioa_cfg: ioa config struct
4241 * @scsi_cmd: scsi command struct
4242 *
4243 * This function saves mode select data for the adapter to
4244 * use following an adapter reset.
4245 *
4246 * Return value:
4247 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
4248 **/
4249static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
4250 struct scsi_cmnd *scsi_cmd)
4251{
4252 if (!ioa_cfg->saved_mode_pages) {
4253 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages),
4254 GFP_ATOMIC);
4255 if (!ioa_cfg->saved_mode_pages) {
4256 dev_err(&ioa_cfg->pdev->dev,
4257 "IOA mode select buffer allocation failed\n");
4258 return SCSI_MLQUEUE_HOST_BUSY;
4259 }
4260 }
4261
4262 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
4263 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
4264 return 0;
4265}
4266
4267/**
4268 * ipr_queuecommand - Queue a mid-layer request
4269 * @scsi_cmd: scsi command struct
4270 * @done: done function
4271 *
4272 * This function queues a request generated by the mid-layer.
4273 *
4274 * Return value:
4275 * 0 on success
4276 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4277 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4278 **/
4279static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4280 void (*done) (struct scsi_cmnd *))
4281{
4282 struct ipr_ioa_cfg *ioa_cfg;
4283 struct ipr_resource_entry *res;
4284 struct ipr_ioarcb *ioarcb;
4285 struct ipr_cmnd *ipr_cmd;
4286 int rc = 0;
4287
4288 scsi_cmd->scsi_done = done;
4289 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4290 res = scsi_cmd->device->hostdata;
4291 scsi_cmd->result = (DID_OK << 16);
4292
4293 /*
4294 * We are currently blocking all devices due to a host reset
4295 * We have told the host to stop giving us new requests, but
4296 * ERP ops don't count. FIXME
4297 */
4298 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4299 return SCSI_MLQUEUE_HOST_BUSY;
4300
4301 /*
4302 * FIXME - Create scsi_set_host_offline interface
4303 * and the ioa_is_dead check can be removed
4304 */
4305 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4306 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4307 scsi_cmd->result = (DID_NO_CONNECT << 16);
4308 scsi_cmd->scsi_done(scsi_cmd);
4309 return 0;
4310 }
4311
4312 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4313 ioarcb = &ipr_cmd->ioarcb;
4314 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4315
4316 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4317 ipr_cmd->scsi_cmd = scsi_cmd;
4318 ioarcb->res_handle = res->cfgte.res_handle;
4319 ipr_cmd->done = ipr_scsi_done;
4320 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4321
4322 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4323 if (scsi_cmd->underflow == 0)
4324 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4325
4326 if (res->needs_sync_complete) {
4327 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4328 res->needs_sync_complete = 0;
4329 }
4330
4331 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4332 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4333 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4334 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4335 }
4336
4337 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4338 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4339 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4340
4341 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
4342 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
4343
4344 if (likely(rc == 0))
4345 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4346
4347 if (likely(rc == 0)) {
4348 mb();
4349 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4350 ioa_cfg->regs.ioarrin_reg);
4351 } else {
4352 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4353 return SCSI_MLQUEUE_HOST_BUSY;
4354 }
4355
4356 return 0;
4357}
4358
4359/**
4360 * ipr_info - Get information about the card/driver
4361 * @scsi_host: scsi host struct
4362 *
4363 * Return value:
4364 * pointer to buffer with description string
4365 **/
4366static const char * ipr_ioa_info(struct Scsi_Host *host)
4367{
4368 static char buffer[512];
4369 struct ipr_ioa_cfg *ioa_cfg;
4370 unsigned long lock_flags = 0;
4371
4372 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4373
4374 spin_lock_irqsave(host->host_lock, lock_flags);
4375 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4376 spin_unlock_irqrestore(host->host_lock, lock_flags);
4377
4378 return buffer;
4379}
4380
4381static struct scsi_host_template driver_template = {
4382 .module = THIS_MODULE,
4383 .name = "IPR",
4384 .info = ipr_ioa_info,
4385 .queuecommand = ipr_queuecommand,
4386 .eh_abort_handler = ipr_eh_abort,
4387 .eh_device_reset_handler = ipr_eh_dev_reset,
4388 .eh_host_reset_handler = ipr_eh_host_reset,
4389 .slave_alloc = ipr_slave_alloc,
4390 .slave_configure = ipr_slave_configure,
4391 .slave_destroy = ipr_slave_destroy,
4392 .change_queue_depth = ipr_change_queue_depth,
4393 .change_queue_type = ipr_change_queue_type,
4394 .bios_param = ipr_biosparam,
4395 .can_queue = IPR_MAX_COMMANDS,
4396 .this_id = -1,
4397 .sg_tablesize = IPR_MAX_SGLIST,
4398 .max_sectors = IPR_IOA_MAX_SECTORS,
4399 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4400 .use_clustering = ENABLE_CLUSTERING,
4401 .shost_attrs = ipr_ioa_attrs,
4402 .sdev_attrs = ipr_dev_attrs,
4403 .proc_name = IPR_NAME
4404};
4405
4406#ifdef CONFIG_PPC_PSERIES
4407static const u16 ipr_blocked_processors[] = {
4408 PV_NORTHSTAR,
4409 PV_PULSAR,
4410 PV_POWER4,
4411 PV_ICESTAR,
4412 PV_SSTAR,
4413 PV_POWER4p,
4414 PV_630,
4415 PV_630p
4416};
4417
4418/**
4419 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
4420 * @ioa_cfg: ioa cfg struct
4421 *
4422 * Adapters that use Gemstone revision < 3.1 do not work reliably on
4423 * certain pSeries hardware. This function determines if the given
4424 * adapter is in one of these confgurations or not.
4425 *
4426 * Return value:
4427 * 1 if adapter is not supported / 0 if adapter is supported
4428 **/
4429static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
4430{
4431 u8 rev_id;
4432 int i;
4433
4434 if (ioa_cfg->type == 0x5702) {
4435 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
4436 &rev_id) == PCIBIOS_SUCCESSFUL) {
4437 if (rev_id < 4) {
4438 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
4439 if (__is_processor(ipr_blocked_processors[i]))
4440 return 1;
4441 }
4442 }
4443 }
4444 }
4445 return 0;
4446}
4447#else
4448#define ipr_invalid_adapter(ioa_cfg) 0
4449#endif
4450
4451/**
4452 * ipr_ioa_bringdown_done - IOA bring down completion.
4453 * @ipr_cmd: ipr command struct
4454 *
4455 * This function processes the completion of an adapter bring down.
4456 * It wakes any reset sleepers.
4457 *
4458 * Return value:
4459 * IPR_RC_JOB_RETURN
4460 **/
4461static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4462{
4463 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4464
4465 ENTER;
4466 ioa_cfg->in_reset_reload = 0;
4467 ioa_cfg->reset_retries = 0;
4468 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4469 wake_up_all(&ioa_cfg->reset_wait_q);
4470
4471 spin_unlock_irq(ioa_cfg->host->host_lock);
4472 scsi_unblock_requests(ioa_cfg->host);
4473 spin_lock_irq(ioa_cfg->host->host_lock);
4474 LEAVE;
4475
4476 return IPR_RC_JOB_RETURN;
4477}
4478
4479/**
4480 * ipr_ioa_reset_done - IOA reset completion.
4481 * @ipr_cmd: ipr command struct
4482 *
4483 * This function processes the completion of an adapter reset.
4484 * It schedules any necessary mid-layer add/removes and
4485 * wakes any reset sleepers.
4486 *
4487 * Return value:
4488 * IPR_RC_JOB_RETURN
4489 **/
4490static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4491{
4492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4493 struct ipr_resource_entry *res;
4494 struct ipr_hostrcb *hostrcb, *temp;
4495 int i = 0;
4496
4497 ENTER;
4498 ioa_cfg->in_reset_reload = 0;
4499 ioa_cfg->allow_cmds = 1;
4500 ioa_cfg->reset_cmd = NULL;
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06004501 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004502
4503 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4504 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4505 ipr_trace;
4506 break;
4507 }
4508 }
4509 schedule_work(&ioa_cfg->work_q);
4510
4511 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4512 list_del(&hostrcb->queue);
4513 if (i++ < IPR_NUM_LOG_HCAMS)
4514 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4515 else
4516 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4517 }
4518
4519 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4520
4521 ioa_cfg->reset_retries = 0;
4522 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4523 wake_up_all(&ioa_cfg->reset_wait_q);
4524
4525 spin_unlock_irq(ioa_cfg->host->host_lock);
4526 scsi_unblock_requests(ioa_cfg->host);
4527 spin_lock_irq(ioa_cfg->host->host_lock);
4528
4529 if (!ioa_cfg->allow_cmds)
4530 scsi_block_requests(ioa_cfg->host);
4531
4532 LEAVE;
4533 return IPR_RC_JOB_RETURN;
4534}
4535
4536/**
4537 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4538 * @supported_dev: supported device struct
4539 * @vpids: vendor product id struct
4540 *
4541 * Return value:
4542 * none
4543 **/
4544static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4545 struct ipr_std_inq_vpids *vpids)
4546{
4547 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4548 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4549 supported_dev->num_records = 1;
4550 supported_dev->data_length =
4551 cpu_to_be16(sizeof(struct ipr_supported_device));
4552 supported_dev->reserved = 0;
4553}
4554
4555/**
4556 * ipr_set_supported_devs - Send Set Supported Devices for a device
4557 * @ipr_cmd: ipr command struct
4558 *
4559 * This function send a Set Supported Devices to the adapter
4560 *
4561 * Return value:
4562 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4563 **/
4564static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4565{
4566 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4567 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4568 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4569 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4570 struct ipr_resource_entry *res = ipr_cmd->u.res;
4571
4572 ipr_cmd->job_step = ipr_ioa_reset_done;
4573
4574 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
brking@us.ibm.comd0ad6f52005-11-01 17:00:54 -06004575 if (!IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
Linus Torvalds1da177e2005-04-16 15:20:36 -07004576 continue;
4577
4578 ipr_cmd->u.res = res;
4579 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4580
4581 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4582 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4583 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4584
4585 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4586 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4587 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4588
4589 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4590 sizeof(struct ipr_supported_device));
4591 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4592 offsetof(struct ipr_misc_cbs, supp_dev));
4593 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4594 ioarcb->write_data_transfer_length =
4595 cpu_to_be32(sizeof(struct ipr_supported_device));
4596
4597 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4598 IPR_SET_SUP_DEVICE_TIMEOUT);
4599
4600 ipr_cmd->job_step = ipr_set_supported_devs;
4601 return IPR_RC_JOB_RETURN;
4602 }
4603
4604 return IPR_RC_JOB_CONTINUE;
4605}
4606
4607/**
brking@us.ibm.com62275042005-11-01 17:01:14 -06004608 * ipr_setup_write_cache - Disable write cache if needed
4609 * @ipr_cmd: ipr command struct
4610 *
4611 * This function sets up adapters write cache to desired setting
4612 *
4613 * Return value:
4614 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4615 **/
4616static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
4617{
4618 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4619
4620 ipr_cmd->job_step = ipr_set_supported_devs;
4621 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4622 struct ipr_resource_entry, queue);
4623
4624 if (ioa_cfg->cache_state != CACHE_DISABLED)
4625 return IPR_RC_JOB_CONTINUE;
4626
4627 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4628 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4629 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
4630 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
4631
4632 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4633
4634 return IPR_RC_JOB_RETURN;
4635}
4636
4637/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004638 * ipr_get_mode_page - Locate specified mode page
4639 * @mode_pages: mode page buffer
4640 * @page_code: page code to find
4641 * @len: minimum required length for mode page
4642 *
4643 * Return value:
4644 * pointer to mode page / NULL on failure
4645 **/
4646static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4647 u32 page_code, u32 len)
4648{
4649 struct ipr_mode_page_hdr *mode_hdr;
4650 u32 page_length;
4651 u32 length;
4652
4653 if (!mode_pages || (mode_pages->hdr.length == 0))
4654 return NULL;
4655
4656 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4657 mode_hdr = (struct ipr_mode_page_hdr *)
4658 (mode_pages->data + mode_pages->hdr.block_desc_len);
4659
4660 while (length) {
4661 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4662 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4663 return mode_hdr;
4664 break;
4665 } else {
4666 page_length = (sizeof(struct ipr_mode_page_hdr) +
4667 mode_hdr->page_length);
4668 length -= page_length;
4669 mode_hdr = (struct ipr_mode_page_hdr *)
4670 ((unsigned long)mode_hdr + page_length);
4671 }
4672 }
4673 return NULL;
4674}
4675
4676/**
4677 * ipr_check_term_power - Check for term power errors
4678 * @ioa_cfg: ioa config struct
4679 * @mode_pages: IOAFP mode pages buffer
4680 *
4681 * Check the IOAFP's mode page 28 for term power errors
4682 *
4683 * Return value:
4684 * nothing
4685 **/
4686static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4687 struct ipr_mode_pages *mode_pages)
4688{
4689 int i;
4690 int entry_length;
4691 struct ipr_dev_bus_entry *bus;
4692 struct ipr_mode_page28 *mode_page;
4693
4694 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4695 sizeof(struct ipr_mode_page28));
4696
4697 entry_length = mode_page->entry_length;
4698
4699 bus = mode_page->bus;
4700
4701 for (i = 0; i < mode_page->num_entries; i++) {
4702 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4703 dev_err(&ioa_cfg->pdev->dev,
4704 "Term power is absent on scsi bus %d\n",
4705 bus->res_addr.bus);
4706 }
4707
4708 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4709 }
4710}
4711
4712/**
4713 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4714 * @ioa_cfg: ioa config struct
4715 *
4716 * Looks through the config table checking for SES devices. If
4717 * the SES device is in the SES table indicating a maximum SCSI
4718 * bus speed, the speed is limited for the bus.
4719 *
4720 * Return value:
4721 * none
4722 **/
4723static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4724{
4725 u32 max_xfer_rate;
4726 int i;
4727
4728 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4729 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4730 ioa_cfg->bus_attr[i].bus_width);
4731
4732 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4733 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4734 }
4735}
4736
4737/**
4738 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4739 * @ioa_cfg: ioa config struct
4740 * @mode_pages: mode page 28 buffer
4741 *
4742 * Updates mode page 28 based on driver configuration
4743 *
4744 * Return value:
4745 * none
4746 **/
4747static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4748 struct ipr_mode_pages *mode_pages)
4749{
4750 int i, entry_length;
4751 struct ipr_dev_bus_entry *bus;
4752 struct ipr_bus_attributes *bus_attr;
4753 struct ipr_mode_page28 *mode_page;
4754
4755 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4756 sizeof(struct ipr_mode_page28));
4757
4758 entry_length = mode_page->entry_length;
4759
4760 /* Loop for each device bus entry */
4761 for (i = 0, bus = mode_page->bus;
4762 i < mode_page->num_entries;
4763 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4764 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4765 dev_err(&ioa_cfg->pdev->dev,
4766 "Invalid resource address reported: 0x%08X\n",
4767 IPR_GET_PHYS_LOC(bus->res_addr));
4768 continue;
4769 }
4770
4771 bus_attr = &ioa_cfg->bus_attr[i];
4772 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4773 bus->bus_width = bus_attr->bus_width;
4774 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4775 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4776 if (bus_attr->qas_enabled)
4777 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4778 else
4779 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4780 }
4781}
4782
4783/**
4784 * ipr_build_mode_select - Build a mode select command
4785 * @ipr_cmd: ipr command struct
4786 * @res_handle: resource handle to send command to
4787 * @parm: Byte 2 of Mode Sense command
4788 * @dma_addr: DMA buffer address
4789 * @xfer_len: data transfer length
4790 *
4791 * Return value:
4792 * none
4793 **/
4794static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4795 __be32 res_handle, u8 parm, u32 dma_addr,
4796 u8 xfer_len)
4797{
4798 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4799 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4800
4801 ioarcb->res_handle = res_handle;
4802 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4803 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4804 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4805 ioarcb->cmd_pkt.cdb[1] = parm;
4806 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4807
4808 ioadl->flags_and_data_len =
4809 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4810 ioadl->address = cpu_to_be32(dma_addr);
4811 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4812 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4813}
4814
4815/**
4816 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4817 * @ipr_cmd: ipr command struct
4818 *
4819 * This function sets up the SCSI bus attributes and sends
4820 * a Mode Select for Page 28 to activate them.
4821 *
4822 * Return value:
4823 * IPR_RC_JOB_RETURN
4824 **/
4825static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4826{
4827 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4828 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4829 int length;
4830
4831 ENTER;
4832 if (ioa_cfg->saved_mode_pages) {
4833 memcpy(mode_pages, ioa_cfg->saved_mode_pages,
4834 ioa_cfg->saved_mode_page_len);
4835 length = ioa_cfg->saved_mode_page_len;
4836 } else {
4837 ipr_scsi_bus_speed_limit(ioa_cfg);
4838 ipr_check_term_power(ioa_cfg, mode_pages);
4839 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4840 length = mode_pages->hdr.length + 1;
4841 mode_pages->hdr.length = 0;
4842 }
4843
4844 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4845 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4846 length);
4847
brking@us.ibm.com62275042005-11-01 17:01:14 -06004848 ipr_cmd->job_step = ipr_setup_write_cache;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004849 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4850
4851 LEAVE;
4852 return IPR_RC_JOB_RETURN;
4853}
4854
4855/**
4856 * ipr_build_mode_sense - Builds a mode sense command
4857 * @ipr_cmd: ipr command struct
4858 * @res: resource entry struct
4859 * @parm: Byte 2 of mode sense command
4860 * @dma_addr: DMA address of mode sense buffer
4861 * @xfer_len: Size of DMA buffer
4862 *
4863 * Return value:
4864 * none
4865 **/
4866static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4867 __be32 res_handle,
4868 u8 parm, u32 dma_addr, u8 xfer_len)
4869{
4870 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4871 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4872
4873 ioarcb->res_handle = res_handle;
4874 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4875 ioarcb->cmd_pkt.cdb[2] = parm;
4876 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4877 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4878
4879 ioadl->flags_and_data_len =
4880 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4881 ioadl->address = cpu_to_be32(dma_addr);
4882 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4883 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4884}
4885
4886/**
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06004887 * ipr_reset_cmd_failed - Handle failure of IOA reset command
4888 * @ipr_cmd: ipr command struct
4889 *
4890 * This function handles the failure of an IOA bringup command.
4891 *
4892 * Return value:
4893 * IPR_RC_JOB_RETURN
4894 **/
4895static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
4896{
4897 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4898 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4899
4900 dev_err(&ioa_cfg->pdev->dev,
4901 "0x%02X failed with IOASC: 0x%08X\n",
4902 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
4903
4904 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4905 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4906 return IPR_RC_JOB_RETURN;
4907}
4908
4909/**
4910 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
4911 * @ipr_cmd: ipr command struct
4912 *
4913 * This function handles the failure of a Mode Sense to the IOAFP.
4914 * Some adapters do not handle all mode pages.
4915 *
4916 * Return value:
4917 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4918 **/
4919static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
4920{
4921 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4922
4923 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
4924 ipr_cmd->job_step = ipr_setup_write_cache;
4925 return IPR_RC_JOB_CONTINUE;
4926 }
4927
4928 return ipr_reset_cmd_failed(ipr_cmd);
4929}
4930
4931/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07004932 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4933 * @ipr_cmd: ipr command struct
4934 *
4935 * This function send a Page 28 mode sense to the IOA to
4936 * retrieve SCSI bus attributes.
4937 *
4938 * Return value:
4939 * IPR_RC_JOB_RETURN
4940 **/
4941static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4942{
4943 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4944
4945 ENTER;
4946 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4947 0x28, ioa_cfg->vpd_cbs_dma +
4948 offsetof(struct ipr_misc_cbs, mode_pages),
4949 sizeof(struct ipr_mode_pages));
4950
4951 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06004952 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07004953
4954 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4955
4956 LEAVE;
4957 return IPR_RC_JOB_RETURN;
4958}
4959
4960/**
4961 * ipr_init_res_table - Initialize the resource table
4962 * @ipr_cmd: ipr command struct
4963 *
4964 * This function looks through the existing resource table, comparing
4965 * it with the config table. This function will take care of old/new
4966 * devices and schedule adding/removing them from the mid-layer
4967 * as appropriate.
4968 *
4969 * Return value:
4970 * IPR_RC_JOB_CONTINUE
4971 **/
4972static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4973{
4974 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4975 struct ipr_resource_entry *res, *temp;
4976 struct ipr_config_table_entry *cfgte;
4977 int found, i;
4978 LIST_HEAD(old_res);
4979
4980 ENTER;
4981 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4982 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4983
4984 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4985 list_move_tail(&res->queue, &old_res);
4986
4987 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4988 cfgte = &ioa_cfg->cfg_table->dev[i];
4989 found = 0;
4990
4991 list_for_each_entry_safe(res, temp, &old_res, queue) {
4992 if (!memcmp(&res->cfgte.res_addr,
4993 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4994 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4995 found = 1;
4996 break;
4997 }
4998 }
4999
5000 if (!found) {
5001 if (list_empty(&ioa_cfg->free_res_q)) {
5002 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5003 break;
5004 }
5005
5006 found = 1;
5007 res = list_entry(ioa_cfg->free_res_q.next,
5008 struct ipr_resource_entry, queue);
5009 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5010 ipr_init_res_entry(res);
5011 res->add_to_ml = 1;
5012 }
5013
5014 if (found)
5015 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5016 }
5017
5018 list_for_each_entry_safe(res, temp, &old_res, queue) {
5019 if (res->sdev) {
5020 res->del_from_ml = 1;
5021 res->sdev->hostdata = NULL;
5022 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5023 } else {
5024 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5025 }
5026 }
5027
5028 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5029
5030 LEAVE;
5031 return IPR_RC_JOB_CONTINUE;
5032}
5033
5034/**
5035 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5036 * @ipr_cmd: ipr command struct
5037 *
5038 * This function sends a Query IOA Configuration command
5039 * to the adapter to retrieve the IOA configuration table.
5040 *
5041 * Return value:
5042 * IPR_RC_JOB_RETURN
5043 **/
5044static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5045{
5046 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5047 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5048 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5049 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5050
5051 ENTER;
5052 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5053 ucode_vpd->major_release, ucode_vpd->card_type,
5054 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5055 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5056 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5057
5058 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5059 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5060 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5061
5062 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5063 ioarcb->read_data_transfer_length =
5064 cpu_to_be32(sizeof(struct ipr_config_table));
5065
5066 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5067 ioadl->flags_and_data_len =
5068 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5069
5070 ipr_cmd->job_step = ipr_init_res_table;
5071
5072 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5073
5074 LEAVE;
5075 return IPR_RC_JOB_RETURN;
5076}
5077
5078/**
5079 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5080 * @ipr_cmd: ipr command struct
5081 *
5082 * This utility function sends an inquiry to the adapter.
5083 *
5084 * Return value:
5085 * none
5086 **/
5087static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5088 u32 dma_addr, u8 xfer_len)
5089{
5090 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5091 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5092
5093 ENTER;
5094 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5095 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5096
5097 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5098 ioarcb->cmd_pkt.cdb[1] = flags;
5099 ioarcb->cmd_pkt.cdb[2] = page;
5100 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5101
5102 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5103 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5104
5105 ioadl->address = cpu_to_be32(dma_addr);
5106 ioadl->flags_and_data_len =
5107 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5108
5109 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5110 LEAVE;
5111}
5112
5113/**
brking@us.ibm.com62275042005-11-01 17:01:14 -06005114 * ipr_inquiry_page_supported - Is the given inquiry page supported
5115 * @page0: inquiry page 0 buffer
5116 * @page: page code.
5117 *
5118 * This function determines if the specified inquiry page is supported.
5119 *
5120 * Return value:
5121 * 1 if page is supported / 0 if not
5122 **/
5123static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5124{
5125 int i;
5126
5127 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5128 if (page0->page[i] == page)
5129 return 1;
5130
5131 return 0;
5132}
5133
5134/**
Linus Torvalds1da177e2005-04-16 15:20:36 -07005135 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5136 * @ipr_cmd: ipr command struct
5137 *
5138 * This function sends a Page 3 inquiry to the adapter
5139 * to retrieve software VPD information.
5140 *
5141 * Return value:
5142 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5143 **/
5144static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5145{
5146 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
brking@us.ibm.com62275042005-11-01 17:01:14 -06005147 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5148
5149 ENTER;
5150
5151 if (!ipr_inquiry_page_supported(page0, 1))
5152 ioa_cfg->cache_state = CACHE_NONE;
5153
5154 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5155
5156 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5157 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5158 sizeof(struct ipr_inquiry_page3));
5159
5160 LEAVE;
5161 return IPR_RC_JOB_RETURN;
5162}
5163
5164/**
5165 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
5166 * @ipr_cmd: ipr command struct
5167 *
5168 * This function sends a Page 0 inquiry to the adapter
5169 * to retrieve supported inquiry pages.
5170 *
5171 * Return value:
5172 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5173 **/
5174static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
5175{
5176 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005177 char type[5];
5178
5179 ENTER;
5180
5181 /* Grab the type out of the VPD and store it away */
5182 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
5183 type[4] = '\0';
5184 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
5185
brking@us.ibm.com62275042005-11-01 17:01:14 -06005186 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005187
brking@us.ibm.com62275042005-11-01 17:01:14 -06005188 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
5189 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
5190 sizeof(struct ipr_inquiry_page0));
Linus Torvalds1da177e2005-04-16 15:20:36 -07005191
5192 LEAVE;
5193 return IPR_RC_JOB_RETURN;
5194}
5195
5196/**
5197 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
5198 * @ipr_cmd: ipr command struct
5199 *
5200 * This function sends a standard inquiry to the adapter.
5201 *
5202 * Return value:
5203 * IPR_RC_JOB_RETURN
5204 **/
5205static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
5206{
5207 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5208
5209 ENTER;
brking@us.ibm.com62275042005-11-01 17:01:14 -06005210 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005211
5212 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
5213 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
5214 sizeof(struct ipr_ioa_vpd));
5215
5216 LEAVE;
5217 return IPR_RC_JOB_RETURN;
5218}
5219
5220/**
5221 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
5222 * @ipr_cmd: ipr command struct
5223 *
5224 * This function send an Identify Host Request Response Queue
5225 * command to establish the HRRQ with the adapter.
5226 *
5227 * Return value:
5228 * IPR_RC_JOB_RETURN
5229 **/
5230static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
5231{
5232 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5233 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5234
5235 ENTER;
5236 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
5237
5238 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
5239 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5240
5241 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5242 ioarcb->cmd_pkt.cdb[2] =
5243 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
5244 ioarcb->cmd_pkt.cdb[3] =
5245 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
5246 ioarcb->cmd_pkt.cdb[4] =
5247 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
5248 ioarcb->cmd_pkt.cdb[5] =
5249 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
5250 ioarcb->cmd_pkt.cdb[7] =
5251 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
5252 ioarcb->cmd_pkt.cdb[8] =
5253 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
5254
5255 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
5256
5257 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5258
5259 LEAVE;
5260 return IPR_RC_JOB_RETURN;
5261}
5262
5263/**
5264 * ipr_reset_timer_done - Adapter reset timer function
5265 * @ipr_cmd: ipr command struct
5266 *
5267 * Description: This function is used in adapter reset processing
5268 * for timing events. If the reset_cmd pointer in the IOA
5269 * config struct is not this adapter's we are doing nested
5270 * resets and fail_all_ops will take care of freeing the
5271 * command block.
5272 *
5273 * Return value:
5274 * none
5275 **/
5276static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
5277{
5278 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5279 unsigned long lock_flags = 0;
5280
5281 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5282
5283 if (ioa_cfg->reset_cmd == ipr_cmd) {
5284 list_del(&ipr_cmd->queue);
5285 ipr_cmd->done(ipr_cmd);
5286 }
5287
5288 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5289}
5290
5291/**
5292 * ipr_reset_start_timer - Start a timer for adapter reset job
5293 * @ipr_cmd: ipr command struct
5294 * @timeout: timeout value
5295 *
5296 * Description: This function is used in adapter reset processing
5297 * for timing events. If the reset_cmd pointer in the IOA
5298 * config struct is not this adapter's we are doing nested
5299 * resets and fail_all_ops will take care of freeing the
5300 * command block.
5301 *
5302 * Return value:
5303 * none
5304 **/
5305static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
5306 unsigned long timeout)
5307{
5308 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
5309 ipr_cmd->done = ipr_reset_ioa_job;
5310
5311 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5312 ipr_cmd->timer.expires = jiffies + timeout;
5313 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
5314 add_timer(&ipr_cmd->timer);
5315}
5316
5317/**
5318 * ipr_init_ioa_mem - Initialize ioa_cfg control block
5319 * @ioa_cfg: ioa cfg struct
5320 *
5321 * Return value:
5322 * nothing
5323 **/
5324static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
5325{
5326 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
5327
5328 /* Initialize Host RRQ pointers */
5329 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
5330 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
5331 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
5332 ioa_cfg->toggle_bit = 1;
5333
5334 /* Zero out config table */
5335 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
5336}
5337
5338/**
5339 * ipr_reset_enable_ioa - Enable the IOA following a reset.
5340 * @ipr_cmd: ipr command struct
5341 *
5342 * This function reinitializes some control blocks and
5343 * enables destructive diagnostics on the adapter.
5344 *
5345 * Return value:
5346 * IPR_RC_JOB_RETURN
5347 **/
5348static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
5349{
5350 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5351 volatile u32 int_reg;
5352
5353 ENTER;
5354 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
5355 ipr_init_ioa_mem(ioa_cfg);
5356
5357 ioa_cfg->allow_interrupts = 1;
5358 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5359
5360 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5361 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
5362 ioa_cfg->regs.clr_interrupt_mask_reg);
5363 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5364 return IPR_RC_JOB_CONTINUE;
5365 }
5366
5367 /* Enable destructive diagnostics on IOA */
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06005368 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005369
5370 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
5371 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5372
5373 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
5374
5375 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
5376 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
5377 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
5378 ipr_cmd->done = ipr_reset_ioa_job;
5379 add_timer(&ipr_cmd->timer);
5380 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5381
5382 LEAVE;
5383 return IPR_RC_JOB_RETURN;
5384}
5385
5386/**
5387 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
5388 * @ipr_cmd: ipr command struct
5389 *
5390 * This function is invoked when an adapter dump has run out
5391 * of processing time.
5392 *
5393 * Return value:
5394 * IPR_RC_JOB_CONTINUE
5395 **/
5396static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
5397{
5398 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5399
5400 if (ioa_cfg->sdt_state == GET_DUMP)
5401 ioa_cfg->sdt_state = ABORT_DUMP;
5402
5403 ipr_cmd->job_step = ipr_reset_alert;
5404
5405 return IPR_RC_JOB_CONTINUE;
5406}
5407
5408/**
5409 * ipr_unit_check_no_data - Log a unit check/no data error log
5410 * @ioa_cfg: ioa config struct
5411 *
5412 * Logs an error indicating the adapter unit checked, but for some
5413 * reason, we were unable to fetch the unit check buffer.
5414 *
5415 * Return value:
5416 * nothing
5417 **/
5418static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
5419{
5420 ioa_cfg->errors_logged++;
5421 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
5422}
5423
5424/**
5425 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
5426 * @ioa_cfg: ioa config struct
5427 *
5428 * Fetches the unit check buffer from the adapter by clocking the data
5429 * through the mailbox register.
5430 *
5431 * Return value:
5432 * nothing
5433 **/
5434static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
5435{
5436 unsigned long mailbox;
5437 struct ipr_hostrcb *hostrcb;
5438 struct ipr_uc_sdt sdt;
5439 int rc, length;
5440
5441 mailbox = readl(ioa_cfg->ioa_mailbox);
5442
5443 if (!ipr_sdt_is_fmt2(mailbox)) {
5444 ipr_unit_check_no_data(ioa_cfg);
5445 return;
5446 }
5447
5448 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
5449 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
5450 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
5451
5452 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
5453 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
5454 ipr_unit_check_no_data(ioa_cfg);
5455 return;
5456 }
5457
5458 /* Find length of the first sdt entry (UC buffer) */
5459 length = (be32_to_cpu(sdt.entry[0].end_offset) -
5460 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
5461
5462 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
5463 struct ipr_hostrcb, queue);
5464 list_del(&hostrcb->queue);
5465 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
5466
5467 rc = ipr_get_ldump_data_section(ioa_cfg,
5468 be32_to_cpu(sdt.entry[0].bar_str_offset),
5469 (__be32 *)&hostrcb->hcam,
5470 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
5471
5472 if (!rc)
5473 ipr_handle_log_data(ioa_cfg, hostrcb);
5474 else
5475 ipr_unit_check_no_data(ioa_cfg);
5476
5477 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
5478}
5479
5480/**
5481 * ipr_reset_restore_cfg_space - Restore PCI config space.
5482 * @ipr_cmd: ipr command struct
5483 *
5484 * Description: This function restores the saved PCI config space of
5485 * the adapter, fails all outstanding ops back to the callers, and
5486 * fetches the dump/unit check if applicable to this reset.
5487 *
5488 * Return value:
5489 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5490 **/
5491static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
5492{
5493 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5494 int rc;
5495
5496 ENTER;
Brian Kingb30197d2005-09-27 01:21:56 -07005497 pci_unblock_user_cfg_access(ioa_cfg->pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005498 rc = pci_restore_state(ioa_cfg->pdev);
5499
5500 if (rc != PCIBIOS_SUCCESSFUL) {
5501 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5502 return IPR_RC_JOB_CONTINUE;
5503 }
5504
5505 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
5506 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5507 return IPR_RC_JOB_CONTINUE;
5508 }
5509
5510 ipr_fail_all_ops(ioa_cfg);
5511
5512 if (ioa_cfg->ioa_unit_checked) {
5513 ioa_cfg->ioa_unit_checked = 0;
5514 ipr_get_unit_check_buffer(ioa_cfg);
5515 ipr_cmd->job_step = ipr_reset_alert;
5516 ipr_reset_start_timer(ipr_cmd, 0);
5517 return IPR_RC_JOB_RETURN;
5518 }
5519
5520 if (ioa_cfg->in_ioa_bringdown) {
5521 ipr_cmd->job_step = ipr_ioa_bringdown_done;
5522 } else {
5523 ipr_cmd->job_step = ipr_reset_enable_ioa;
5524
5525 if (GET_DUMP == ioa_cfg->sdt_state) {
5526 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
5527 ipr_cmd->job_step = ipr_reset_wait_for_dump;
5528 schedule_work(&ioa_cfg->work_q);
5529 return IPR_RC_JOB_RETURN;
5530 }
5531 }
5532
5533 ENTER;
5534 return IPR_RC_JOB_CONTINUE;
5535}
5536
5537/**
5538 * ipr_reset_start_bist - Run BIST on the adapter.
5539 * @ipr_cmd: ipr command struct
5540 *
5541 * Description: This function runs BIST on the adapter, then delays 2 seconds.
5542 *
5543 * Return value:
5544 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5545 **/
5546static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
5547{
5548 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5549 int rc;
5550
5551 ENTER;
Brian Kingb30197d2005-09-27 01:21:56 -07005552 pci_block_user_cfg_access(ioa_cfg->pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005553 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
5554
5555 if (rc != PCIBIOS_SUCCESSFUL) {
5556 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5557 rc = IPR_RC_JOB_CONTINUE;
5558 } else {
5559 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
5560 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
5561 rc = IPR_RC_JOB_RETURN;
5562 }
5563
5564 LEAVE;
5565 return rc;
5566}
5567
5568/**
5569 * ipr_reset_allowed - Query whether or not IOA can be reset
5570 * @ioa_cfg: ioa config struct
5571 *
5572 * Return value:
5573 * 0 if reset not allowed / non-zero if reset is allowed
5574 **/
5575static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
5576{
5577 volatile u32 temp_reg;
5578
5579 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5580 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
5581}
5582
5583/**
5584 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5585 * @ipr_cmd: ipr command struct
5586 *
5587 * Description: This function waits for adapter permission to run BIST,
5588 * then runs BIST. If the adapter does not give permission after a
5589 * reasonable time, we will reset the adapter anyway. The impact of
5590 * resetting the adapter without warning the adapter is the risk of
5591 * losing the persistent error log on the adapter. If the adapter is
5592 * reset while it is writing to the flash on the adapter, the flash
5593 * segment will have bad ECC and be zeroed.
5594 *
5595 * Return value:
5596 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5597 **/
5598static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5599{
5600 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5601 int rc = IPR_RC_JOB_RETURN;
5602
5603 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5604 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5605 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5606 } else {
5607 ipr_cmd->job_step = ipr_reset_start_bist;
5608 rc = IPR_RC_JOB_CONTINUE;
5609 }
5610
5611 return rc;
5612}
5613
5614/**
5615 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5616 * @ipr_cmd: ipr command struct
5617 *
5618 * Description: This function alerts the adapter that it will be reset.
5619 * If memory space is not currently enabled, proceed directly
5620 * to running BIST on the adapter. The timer must always be started
5621 * so we guarantee we do not run BIST from ipr_isr.
5622 *
5623 * Return value:
5624 * IPR_RC_JOB_RETURN
5625 **/
5626static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5627{
5628 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5629 u16 cmd_reg;
5630 int rc;
5631
5632 ENTER;
5633 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5634
5635 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5636 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5637 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5638 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5639 } else {
5640 ipr_cmd->job_step = ipr_reset_start_bist;
5641 }
5642
5643 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5644 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5645
5646 LEAVE;
5647 return IPR_RC_JOB_RETURN;
5648}
5649
5650/**
5651 * ipr_reset_ucode_download_done - Microcode download completion
5652 * @ipr_cmd: ipr command struct
5653 *
5654 * Description: This function unmaps the microcode download buffer.
5655 *
5656 * Return value:
5657 * IPR_RC_JOB_CONTINUE
5658 **/
5659static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5660{
5661 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5662 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5663
5664 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5665 sglist->num_sg, DMA_TO_DEVICE);
5666
5667 ipr_cmd->job_step = ipr_reset_alert;
5668 return IPR_RC_JOB_CONTINUE;
5669}
5670
5671/**
5672 * ipr_reset_ucode_download - Download microcode to the adapter
5673 * @ipr_cmd: ipr command struct
5674 *
5675 * Description: This function checks to see if it there is microcode
5676 * to download to the adapter. If there is, a download is performed.
5677 *
5678 * Return value:
5679 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5680 **/
5681static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5682{
5683 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5684 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5685
5686 ENTER;
5687 ipr_cmd->job_step = ipr_reset_alert;
5688
5689 if (!sglist)
5690 return IPR_RC_JOB_CONTINUE;
5691
5692 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5693 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5694 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5695 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5696 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5697 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5698 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5699
brking@us.ibm.com12baa422005-11-01 17:01:27 -06005700 ipr_build_ucode_ioadl(ipr_cmd, sglist);
Linus Torvalds1da177e2005-04-16 15:20:36 -07005701 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5702
5703 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5704 IPR_WRITE_BUFFER_TIMEOUT);
5705
5706 LEAVE;
5707 return IPR_RC_JOB_RETURN;
5708}
5709
5710/**
5711 * ipr_reset_shutdown_ioa - Shutdown the adapter
5712 * @ipr_cmd: ipr command struct
5713 *
5714 * Description: This function issues an adapter shutdown of the
5715 * specified type to the specified adapter as part of the
5716 * adapter reset job.
5717 *
5718 * Return value:
5719 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5720 **/
5721static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5722{
5723 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5724 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5725 unsigned long timeout;
5726 int rc = IPR_RC_JOB_CONTINUE;
5727
5728 ENTER;
5729 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5730 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5731 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5732 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5733 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5734
5735 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5736 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5737 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5738 timeout = IPR_INTERNAL_TIMEOUT;
5739 else
5740 timeout = IPR_SHUTDOWN_TIMEOUT;
5741
5742 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5743
5744 rc = IPR_RC_JOB_RETURN;
5745 ipr_cmd->job_step = ipr_reset_ucode_download;
5746 } else
5747 ipr_cmd->job_step = ipr_reset_alert;
5748
5749 LEAVE;
5750 return rc;
5751}
5752
5753/**
5754 * ipr_reset_ioa_job - Adapter reset job
5755 * @ipr_cmd: ipr command struct
5756 *
5757 * Description: This function is the job router for the adapter reset job.
5758 *
5759 * Return value:
5760 * none
5761 **/
5762static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5763{
5764 u32 rc, ioasc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005765 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5766
5767 do {
5768 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5769
5770 if (ioa_cfg->reset_cmd != ipr_cmd) {
5771 /*
5772 * We are doing nested adapter resets and this is
5773 * not the current reset job.
5774 */
5775 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5776 return;
5777 }
5778
5779 if (IPR_IOASC_SENSE_KEY(ioasc)) {
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06005780 rc = ipr_cmd->job_step_failed(ipr_cmd);
5781 if (rc == IPR_RC_JOB_RETURN)
5782 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005783 }
5784
5785 ipr_reinit_ipr_cmnd(ipr_cmd);
brking@us.ibm.comdfed8232005-11-01 17:02:55 -06005786 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07005787 rc = ipr_cmd->job_step(ipr_cmd);
5788 } while(rc == IPR_RC_JOB_CONTINUE);
5789}
5790
5791/**
5792 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5793 * @ioa_cfg: ioa config struct
5794 * @job_step: first job step of reset job
5795 * @shutdown_type: shutdown type
5796 *
5797 * Description: This function will initiate the reset of the given adapter
5798 * starting at the selected job step.
5799 * If the caller needs to wait on the completion of the reset,
5800 * the caller must sleep on the reset_wait_q.
5801 *
5802 * Return value:
5803 * none
5804 **/
5805static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5806 int (*job_step) (struct ipr_cmnd *),
5807 enum ipr_shutdown_type shutdown_type)
5808{
5809 struct ipr_cmnd *ipr_cmd;
5810
5811 ioa_cfg->in_reset_reload = 1;
5812 ioa_cfg->allow_cmds = 0;
5813 scsi_block_requests(ioa_cfg->host);
5814
5815 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5816 ioa_cfg->reset_cmd = ipr_cmd;
5817 ipr_cmd->job_step = job_step;
5818 ipr_cmd->u.shutdown_type = shutdown_type;
5819
5820 ipr_reset_ioa_job(ipr_cmd);
5821}
5822
5823/**
5824 * ipr_initiate_ioa_reset - Initiate an adapter reset
5825 * @ioa_cfg: ioa config struct
5826 * @shutdown_type: shutdown type
5827 *
5828 * Description: This function will initiate the reset of the given adapter.
5829 * If the caller needs to wait on the completion of the reset,
5830 * the caller must sleep on the reset_wait_q.
5831 *
5832 * Return value:
5833 * none
5834 **/
5835static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5836 enum ipr_shutdown_type shutdown_type)
5837{
5838 if (ioa_cfg->ioa_is_dead)
5839 return;
5840
5841 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5842 ioa_cfg->sdt_state = ABORT_DUMP;
5843
5844 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5845 dev_err(&ioa_cfg->pdev->dev,
5846 "IOA taken offline - error recovery failed\n");
5847
5848 ioa_cfg->reset_retries = 0;
5849 ioa_cfg->ioa_is_dead = 1;
5850
5851 if (ioa_cfg->in_ioa_bringdown) {
5852 ioa_cfg->reset_cmd = NULL;
5853 ioa_cfg->in_reset_reload = 0;
5854 ipr_fail_all_ops(ioa_cfg);
5855 wake_up_all(&ioa_cfg->reset_wait_q);
5856
5857 spin_unlock_irq(ioa_cfg->host->host_lock);
5858 scsi_unblock_requests(ioa_cfg->host);
5859 spin_lock_irq(ioa_cfg->host->host_lock);
5860 return;
5861 } else {
5862 ioa_cfg->in_ioa_bringdown = 1;
5863 shutdown_type = IPR_SHUTDOWN_NONE;
5864 }
5865 }
5866
5867 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5868 shutdown_type);
5869}
5870
5871/**
5872 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5873 * @ioa_cfg: ioa cfg struct
5874 *
5875 * Description: This is the second phase of adapter intialization
5876 * This function takes care of initilizing the adapter to the point
5877 * where it can accept new commands.
5878
5879 * Return value:
5880 * 0 on sucess / -EIO on failure
5881 **/
5882static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5883{
5884 int rc = 0;
5885 unsigned long host_lock_flags = 0;
5886
5887 ENTER;
5888 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5889 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
5890 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE);
5891
5892 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5893 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5894 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5895
5896 if (ioa_cfg->ioa_is_dead) {
5897 rc = -EIO;
5898 } else if (ipr_invalid_adapter(ioa_cfg)) {
5899 if (!ipr_testmode)
5900 rc = -EIO;
5901
5902 dev_err(&ioa_cfg->pdev->dev,
5903 "Adapter not supported in this hardware configuration.\n");
5904 }
5905
5906 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5907
5908 LEAVE;
5909 return rc;
5910}
5911
5912/**
5913 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5914 * @ioa_cfg: ioa config struct
5915 *
5916 * Return value:
5917 * none
5918 **/
5919static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5920{
5921 int i;
5922
5923 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5924 if (ioa_cfg->ipr_cmnd_list[i])
5925 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5926 ioa_cfg->ipr_cmnd_list[i],
5927 ioa_cfg->ipr_cmnd_list_dma[i]);
5928
5929 ioa_cfg->ipr_cmnd_list[i] = NULL;
5930 }
5931
5932 if (ioa_cfg->ipr_cmd_pool)
5933 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
5934
5935 ioa_cfg->ipr_cmd_pool = NULL;
5936}
5937
5938/**
5939 * ipr_free_mem - Frees memory allocated for an adapter
5940 * @ioa_cfg: ioa cfg struct
5941 *
5942 * Return value:
5943 * nothing
5944 **/
5945static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
5946{
5947 int i;
5948
5949 kfree(ioa_cfg->res_entries);
5950 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
5951 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5952 ipr_free_cmd_blks(ioa_cfg);
5953 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5954 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5955 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
5956 ioa_cfg->cfg_table,
5957 ioa_cfg->cfg_table_dma);
5958
5959 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5960 pci_free_consistent(ioa_cfg->pdev,
5961 sizeof(struct ipr_hostrcb),
5962 ioa_cfg->hostrcb[i],
5963 ioa_cfg->hostrcb_dma[i]);
5964 }
5965
5966 ipr_free_dump(ioa_cfg);
5967 kfree(ioa_cfg->saved_mode_pages);
5968 kfree(ioa_cfg->trace);
5969}
5970
5971/**
5972 * ipr_free_all_resources - Free all allocated resources for an adapter.
5973 * @ipr_cmd: ipr command struct
5974 *
5975 * This function frees all allocated resources for the
5976 * specified adapter.
5977 *
5978 * Return value:
5979 * none
5980 **/
5981static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
5982{
5983 struct pci_dev *pdev = ioa_cfg->pdev;
5984
5985 ENTER;
5986 free_irq(pdev->irq, ioa_cfg);
5987 iounmap(ioa_cfg->hdw_dma_regs);
5988 pci_release_regions(pdev);
5989 ipr_free_mem(ioa_cfg);
5990 scsi_host_put(ioa_cfg->host);
5991 pci_disable_device(pdev);
5992 LEAVE;
5993}
5994
5995/**
5996 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5997 * @ioa_cfg: ioa config struct
5998 *
5999 * Return value:
6000 * 0 on success / -ENOMEM on allocation failure
6001 **/
6002static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6003{
6004 struct ipr_cmnd *ipr_cmd;
6005 struct ipr_ioarcb *ioarcb;
6006 dma_addr_t dma_addr;
6007 int i;
6008
6009 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6010 sizeof(struct ipr_cmnd), 8, 0);
6011
6012 if (!ioa_cfg->ipr_cmd_pool)
6013 return -ENOMEM;
6014
6015 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6016 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
6017
6018 if (!ipr_cmd) {
6019 ipr_free_cmd_blks(ioa_cfg);
6020 return -ENOMEM;
6021 }
6022
6023 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
6024 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
6025 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
6026
6027 ioarcb = &ipr_cmd->ioarcb;
6028 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
6029 ioarcb->host_response_handle = cpu_to_be32(i << 2);
6030 ioarcb->write_ioadl_addr =
6031 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
6032 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6033 ioarcb->ioasa_host_pci_addr =
6034 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
6035 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
6036 ipr_cmd->cmd_index = i;
6037 ipr_cmd->ioa_cfg = ioa_cfg;
6038 ipr_cmd->sense_buffer_dma = dma_addr +
6039 offsetof(struct ipr_cmnd, sense_buffer);
6040
6041 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6042 }
6043
6044 return 0;
6045}
6046
6047/**
6048 * ipr_alloc_mem - Allocate memory for an adapter
6049 * @ioa_cfg: ioa config struct
6050 *
6051 * Return value:
6052 * 0 on success / non-zero for error
6053 **/
6054static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
6055{
6056 struct pci_dev *pdev = ioa_cfg->pdev;
6057 int i, rc = -ENOMEM;
6058
6059 ENTER;
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06006060 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
Linus Torvalds1da177e2005-04-16 15:20:36 -07006061 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
6062
6063 if (!ioa_cfg->res_entries)
6064 goto out;
6065
Linus Torvalds1da177e2005-04-16 15:20:36 -07006066 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
6067 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
6068
6069 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
6070 sizeof(struct ipr_misc_cbs),
6071 &ioa_cfg->vpd_cbs_dma);
6072
6073 if (!ioa_cfg->vpd_cbs)
6074 goto out_free_res_entries;
6075
6076 if (ipr_alloc_cmd_blks(ioa_cfg))
6077 goto out_free_vpd_cbs;
6078
6079 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
6080 sizeof(u32) * IPR_NUM_CMD_BLKS,
6081 &ioa_cfg->host_rrq_dma);
6082
6083 if (!ioa_cfg->host_rrq)
6084 goto out_ipr_free_cmd_blocks;
6085
6086 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
6087 sizeof(struct ipr_config_table),
6088 &ioa_cfg->cfg_table_dma);
6089
6090 if (!ioa_cfg->cfg_table)
6091 goto out_free_host_rrq;
6092
6093 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6094 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
6095 sizeof(struct ipr_hostrcb),
6096 &ioa_cfg->hostrcb_dma[i]);
6097
6098 if (!ioa_cfg->hostrcb[i])
6099 goto out_free_hostrcb_dma;
6100
6101 ioa_cfg->hostrcb[i]->hostrcb_dma =
6102 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
6103 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
6104 }
6105
brking@us.ibm.com0bc42e32005-11-01 17:01:20 -06006106 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
Linus Torvalds1da177e2005-04-16 15:20:36 -07006107 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
6108
6109 if (!ioa_cfg->trace)
6110 goto out_free_hostrcb_dma;
6111
Linus Torvalds1da177e2005-04-16 15:20:36 -07006112 rc = 0;
6113out:
6114 LEAVE;
6115 return rc;
6116
6117out_free_hostrcb_dma:
6118 while (i-- > 0) {
6119 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
6120 ioa_cfg->hostrcb[i],
6121 ioa_cfg->hostrcb_dma[i]);
6122 }
6123 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
6124 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
6125out_free_host_rrq:
6126 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6127 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6128out_ipr_free_cmd_blocks:
6129 ipr_free_cmd_blks(ioa_cfg);
6130out_free_vpd_cbs:
6131 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
6132 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6133out_free_res_entries:
6134 kfree(ioa_cfg->res_entries);
6135 goto out;
6136}
6137
6138/**
6139 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
6140 * @ioa_cfg: ioa config struct
6141 *
6142 * Return value:
6143 * none
6144 **/
6145static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
6146{
6147 int i;
6148
6149 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6150 ioa_cfg->bus_attr[i].bus = i;
6151 ioa_cfg->bus_attr[i].qas_enabled = 0;
6152 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
6153 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
6154 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
6155 else
6156 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
6157 }
6158}
6159
6160/**
6161 * ipr_init_ioa_cfg - Initialize IOA config struct
6162 * @ioa_cfg: ioa config struct
6163 * @host: scsi host struct
6164 * @pdev: PCI dev struct
6165 *
6166 * Return value:
6167 * none
6168 **/
6169static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
6170 struct Scsi_Host *host, struct pci_dev *pdev)
6171{
6172 const struct ipr_interrupt_offsets *p;
6173 struct ipr_interrupts *t;
6174 void __iomem *base;
6175
6176 ioa_cfg->host = host;
6177 ioa_cfg->pdev = pdev;
6178 ioa_cfg->log_level = ipr_log_level;
brking@us.ibm.com3d1d0da2005-11-01 17:01:54 -06006179 ioa_cfg->doorbell = IPR_DOORBELL;
brking@us.ibm.com32d29772005-11-01 17:02:01 -06006180 if (!ipr_auto_create)
6181 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006182 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
6183 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
6184 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
6185 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
6186 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
6187 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
6188 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
6189 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
6190
6191 INIT_LIST_HEAD(&ioa_cfg->free_q);
6192 INIT_LIST_HEAD(&ioa_cfg->pending_q);
6193 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
6194 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
6195 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
6196 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
6197 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
6198 init_waitqueue_head(&ioa_cfg->reset_wait_q);
6199 ioa_cfg->sdt_state = INACTIVE;
brking@us.ibm.com62275042005-11-01 17:01:14 -06006200 if (ipr_enable_cache)
6201 ioa_cfg->cache_state = CACHE_ENABLED;
6202 else
6203 ioa_cfg->cache_state = CACHE_DISABLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006204
6205 ipr_initialize_bus_attr(ioa_cfg);
6206
6207 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
6208 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
6209 host->max_channel = IPR_MAX_BUS_TO_SCAN;
6210 host->unique_id = host->host_no;
6211 host->max_cmd_len = IPR_MAX_CDB_LEN;
6212 pci_set_drvdata(pdev, ioa_cfg);
6213
6214 p = &ioa_cfg->chip_cfg->regs;
6215 t = &ioa_cfg->regs;
6216 base = ioa_cfg->hdw_dma_regs;
6217
6218 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
6219 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
6220 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
6221 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
6222 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
6223 t->ioarrin_reg = base + p->ioarrin_reg;
6224 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
6225 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
6226 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
6227}
6228
6229/**
6230 * ipr_get_chip_cfg - Find adapter chip configuration
6231 * @dev_id: PCI device id struct
6232 *
6233 * Return value:
6234 * ptr to chip config on success / NULL on failure
6235 **/
6236static const struct ipr_chip_cfg_t * __devinit
6237ipr_get_chip_cfg(const struct pci_device_id *dev_id)
6238{
6239 int i;
6240
6241 if (dev_id->driver_data)
6242 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
6243
6244 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
6245 if (ipr_chip[i].vendor == dev_id->vendor &&
6246 ipr_chip[i].device == dev_id->device)
6247 return ipr_chip[i].cfg;
6248 return NULL;
6249}
6250
6251/**
6252 * ipr_probe_ioa - Allocates memory and does first stage of initialization
6253 * @pdev: PCI device struct
6254 * @dev_id: PCI device id struct
6255 *
6256 * Return value:
6257 * 0 on success / non-zero on failure
6258 **/
6259static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
6260 const struct pci_device_id *dev_id)
6261{
6262 struct ipr_ioa_cfg *ioa_cfg;
6263 struct Scsi_Host *host;
6264 unsigned long ipr_regs_pci;
6265 void __iomem *ipr_regs;
6266 u32 rc = PCIBIOS_SUCCESSFUL;
6267
6268 ENTER;
6269
6270 if ((rc = pci_enable_device(pdev))) {
6271 dev_err(&pdev->dev, "Cannot enable adapter\n");
6272 goto out;
6273 }
6274
6275 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
6276
6277 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
6278
6279 if (!host) {
6280 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
6281 rc = -ENOMEM;
6282 goto out_disable;
6283 }
6284
6285 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
6286 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
6287
6288 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
6289
6290 if (!ioa_cfg->chip_cfg) {
6291 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
6292 dev_id->vendor, dev_id->device);
6293 goto out_scsi_host_put;
6294 }
6295
6296 ipr_regs_pci = pci_resource_start(pdev, 0);
6297
6298 rc = pci_request_regions(pdev, IPR_NAME);
6299 if (rc < 0) {
6300 dev_err(&pdev->dev,
6301 "Couldn't register memory range of registers\n");
6302 goto out_scsi_host_put;
6303 }
6304
6305 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
6306
6307 if (!ipr_regs) {
6308 dev_err(&pdev->dev,
6309 "Couldn't map memory range of registers\n");
6310 rc = -ENOMEM;
6311 goto out_release_regions;
6312 }
6313
6314 ioa_cfg->hdw_dma_regs = ipr_regs;
6315 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
6316 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
6317
6318 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
6319
6320 pci_set_master(pdev);
6321
6322 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
6323 if (rc < 0) {
6324 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
6325 goto cleanup_nomem;
6326 }
6327
6328 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
6329 ioa_cfg->chip_cfg->cache_line_size);
6330
6331 if (rc != PCIBIOS_SUCCESSFUL) {
6332 dev_err(&pdev->dev, "Write of cache line size failed\n");
6333 rc = -EIO;
6334 goto cleanup_nomem;
6335 }
6336
6337 /* Save away PCI config space for use following IOA reset */
6338 rc = pci_save_state(pdev);
6339
6340 if (rc != PCIBIOS_SUCCESSFUL) {
6341 dev_err(&pdev->dev, "Failed to save PCI config space\n");
6342 rc = -EIO;
6343 goto cleanup_nomem;
6344 }
6345
6346 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
6347 goto cleanup_nomem;
6348
6349 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
6350 goto cleanup_nomem;
6351
6352 rc = ipr_alloc_mem(ioa_cfg);
6353 if (rc < 0) {
6354 dev_err(&pdev->dev,
6355 "Couldn't allocate enough memory for device driver!\n");
6356 goto cleanup_nomem;
6357 }
6358
6359 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
6360 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
6361
6362 if (rc) {
6363 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
6364 pdev->irq, rc);
6365 goto cleanup_nolog;
6366 }
6367
6368 spin_lock(&ipr_driver_lock);
6369 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
6370 spin_unlock(&ipr_driver_lock);
6371
6372 LEAVE;
6373out:
6374 return rc;
6375
6376cleanup_nolog:
6377 ipr_free_mem(ioa_cfg);
6378cleanup_nomem:
6379 iounmap(ipr_regs);
6380out_release_regions:
6381 pci_release_regions(pdev);
6382out_scsi_host_put:
6383 scsi_host_put(host);
6384out_disable:
6385 pci_disable_device(pdev);
6386 goto out;
6387}
6388
6389/**
6390 * ipr_scan_vsets - Scans for VSET devices
6391 * @ioa_cfg: ioa config struct
6392 *
6393 * Description: Since the VSET resources do not follow SAM in that we can have
6394 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
6395 *
6396 * Return value:
6397 * none
6398 **/
6399static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
6400{
6401 int target, lun;
6402
6403 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
6404 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
6405 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
6406}
6407
6408/**
6409 * ipr_initiate_ioa_bringdown - Bring down an adapter
6410 * @ioa_cfg: ioa config struct
6411 * @shutdown_type: shutdown type
6412 *
6413 * Description: This function will initiate bringing down the adapter.
6414 * This consists of issuing an IOA shutdown to the adapter
6415 * to flush the cache, and running BIST.
6416 * If the caller needs to wait on the completion of the reset,
6417 * the caller must sleep on the reset_wait_q.
6418 *
6419 * Return value:
6420 * none
6421 **/
6422static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
6423 enum ipr_shutdown_type shutdown_type)
6424{
6425 ENTER;
6426 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6427 ioa_cfg->sdt_state = ABORT_DUMP;
6428 ioa_cfg->reset_retries = 0;
6429 ioa_cfg->in_ioa_bringdown = 1;
6430 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
6431 LEAVE;
6432}
6433
6434/**
6435 * __ipr_remove - Remove a single adapter
6436 * @pdev: pci device struct
6437 *
6438 * Adapter hot plug remove entry point.
6439 *
6440 * Return value:
6441 * none
6442 **/
6443static void __ipr_remove(struct pci_dev *pdev)
6444{
6445 unsigned long host_lock_flags = 0;
6446 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6447 ENTER;
6448
6449 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6450 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6451
6452 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6453 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
brking@us.ibm.com 5cbf5ea2005-05-02 19:50:47 -05006454 flush_scheduled_work();
Linus Torvalds1da177e2005-04-16 15:20:36 -07006455 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6456
6457 spin_lock(&ipr_driver_lock);
6458 list_del(&ioa_cfg->queue);
6459 spin_unlock(&ipr_driver_lock);
6460
6461 if (ioa_cfg->sdt_state == ABORT_DUMP)
6462 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
6463 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6464
6465 ipr_free_all_resources(ioa_cfg);
6466
6467 LEAVE;
6468}
6469
6470/**
6471 * ipr_remove - IOA hot plug remove entry point
6472 * @pdev: pci device struct
6473 *
6474 * Adapter hot plug remove entry point.
6475 *
6476 * Return value:
6477 * none
6478 **/
6479static void ipr_remove(struct pci_dev *pdev)
6480{
6481 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6482
6483 ENTER;
6484
Linus Torvalds1da177e2005-04-16 15:20:36 -07006485 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6486 &ipr_trace_attr);
6487 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
6488 &ipr_dump_attr);
6489 scsi_remove_host(ioa_cfg->host);
6490
6491 __ipr_remove(pdev);
6492
6493 LEAVE;
6494}
6495
6496/**
6497 * ipr_probe - Adapter hot plug add entry point
6498 *
6499 * Return value:
6500 * 0 on success / non-zero on failure
6501 **/
6502static int __devinit ipr_probe(struct pci_dev *pdev,
6503 const struct pci_device_id *dev_id)
6504{
6505 struct ipr_ioa_cfg *ioa_cfg;
6506 int rc;
6507
6508 rc = ipr_probe_ioa(pdev, dev_id);
6509
6510 if (rc)
6511 return rc;
6512
6513 ioa_cfg = pci_get_drvdata(pdev);
6514 rc = ipr_probe_ioa_part2(ioa_cfg);
6515
6516 if (rc) {
6517 __ipr_remove(pdev);
6518 return rc;
6519 }
6520
6521 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
6522
6523 if (rc) {
6524 __ipr_remove(pdev);
6525 return rc;
6526 }
6527
6528 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6529 &ipr_trace_attr);
6530
6531 if (rc) {
6532 scsi_remove_host(ioa_cfg->host);
6533 __ipr_remove(pdev);
6534 return rc;
6535 }
6536
6537 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
6538 &ipr_dump_attr);
6539
6540 if (rc) {
6541 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
6542 &ipr_trace_attr);
6543 scsi_remove_host(ioa_cfg->host);
6544 __ipr_remove(pdev);
6545 return rc;
6546 }
6547
6548 scsi_scan_host(ioa_cfg->host);
6549 ipr_scan_vsets(ioa_cfg);
6550 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
6551 ioa_cfg->allow_ml_add_del = 1;
brking@us.ibm.com11cd8f12005-11-01 17:00:11 -06006552 ioa_cfg->host->max_channel = IPR_VSET_BUS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07006553 schedule_work(&ioa_cfg->work_q);
6554 return 0;
6555}
6556
6557/**
6558 * ipr_shutdown - Shutdown handler.
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07006559 * @pdev: pci device struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07006560 *
6561 * This function is invoked upon system shutdown/reboot. It will issue
6562 * an adapter shutdown to the adapter to flush the write cache.
6563 *
6564 * Return value:
6565 * none
6566 **/
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07006567static void ipr_shutdown(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006568{
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07006569 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006570 unsigned long lock_flags = 0;
6571
6572 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6573 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6574 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6575 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6576}
6577
6578static struct pci_device_id ipr_pci_table[] __devinitdata = {
6579 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6580 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6581 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6582 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6583 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6584 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6585 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6586 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6587 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6588 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6589 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6590 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6591 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6592 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6593 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6594 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6595 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6596 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6597 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6598 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6599 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
brking@us.ibm.com86f51432005-11-01 17:02:42 -06006600 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6601 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B,
6602 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6603 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6604 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A,
6605 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6606 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
6607 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B,
6608 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6609 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6610 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A,
6611 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6612 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
6613 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B,
6614 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
Linus Torvalds1da177e2005-04-16 15:20:36 -07006615 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6616 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6617 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6618 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6619 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6620 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
brking@us.ibm.com86f51432005-11-01 17:02:42 -06006621 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6622 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F,
6623 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
Linus Torvalds1da177e2005-04-16 15:20:36 -07006624 { }
6625};
6626MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6627
6628static struct pci_driver ipr_driver = {
6629 .name = IPR_NAME,
6630 .id_table = ipr_pci_table,
6631 .probe = ipr_probe,
6632 .remove = ipr_remove,
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07006633 .shutdown = ipr_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -07006634};
6635
6636/**
6637 * ipr_init - Module entry point
6638 *
6639 * Return value:
6640 * 0 on success / negative value on failure
6641 **/
6642static int __init ipr_init(void)
6643{
6644 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6645 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6646
6647 return pci_module_init(&ipr_driver);
6648}
6649
6650/**
6651 * ipr_exit - Module unload
6652 *
6653 * Module unload entry point.
6654 *
6655 * Return value:
6656 * none
6657 **/
6658static void __exit ipr_exit(void)
6659{
6660 pci_unregister_driver(&ipr_driver);
6661}
6662
6663module_init(ipr_init);
6664module_exit(ipr_exit);