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[POWERPC] Add missing newline in xmon help output
[linux-2.6/kvm.git] / drivers / scsi / ipr.c
blob95045e33710d488b758374d17956f0f4074b837a
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/ioport.h>
63 #include <linux/delay.h>
64 #include <linux/pci.h>
65 #include <linux/wait.h>
66 #include <linux/spinlock.h>
67 #include <linux/sched.h>
68 #include <linux/interrupt.h>
69 #include <linux/blkdev.h>
70 #include <linux/firmware.h>
71 #include <linux/module.h>
72 #include <linux/moduleparam.h>
73 #include <linux/libata.h>
74 #include <asm/io.h>
75 #include <asm/irq.h>
76 #include <asm/processor.h>
77 #include <scsi/scsi.h>
78 #include <scsi/scsi_host.h>
79 #include <scsi/scsi_tcq.h>
80 #include <scsi/scsi_eh.h>
81 #include <scsi/scsi_cmnd.h>
82 #include "ipr.h"
83
84 /*
85 * Global Data
86 */
87 static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
88 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
89 static unsigned int ipr_max_speed = 1;
90 static int ipr_testmode = 0;
91 static unsigned int ipr_fastfail = 0;
92 static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
93 static unsigned int ipr_enable_cache = 1;
94 static unsigned int ipr_debug = 0;
95 static int ipr_auto_create = 1;
96 static DEFINE_SPINLOCK(ipr_driver_lock);
97
98 /* This table describes the differences between DMA controller chips */
99 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
100 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
101 .mailbox = 0x0042C,
102 .cache_line_size = 0x20,
103 {
104 .set_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_mask_reg = 0x00230,
106 .sense_interrupt_mask_reg = 0x0022C,
107 .clr_interrupt_reg = 0x00228,
108 .sense_interrupt_reg = 0x00224,
109 .ioarrin_reg = 0x00404,
110 .sense_uproc_interrupt_reg = 0x00214,
111 .set_uproc_interrupt_reg = 0x00214,
112 .clr_uproc_interrupt_reg = 0x00218
113 }
114 },
115 { /* Snipe and Scamp */
116 .mailbox = 0x0052C,
117 .cache_line_size = 0x20,
118 {
119 .set_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_mask_reg = 0x0028C,
121 .sense_interrupt_mask_reg = 0x00288,
122 .clr_interrupt_reg = 0x00284,
123 .sense_interrupt_reg = 0x00280,
124 .ioarrin_reg = 0x00504,
125 .sense_uproc_interrupt_reg = 0x00290,
126 .set_uproc_interrupt_reg = 0x00290,
127 .clr_uproc_interrupt_reg = 0x00294
128 }
129 },
130 };
131
132 static const struct ipr_chip_t ipr_chip[] = {
133 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
134 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
135 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, &ipr_chip_cfg[0] },
136 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, &ipr_chip_cfg[0] },
137 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, &ipr_chip_cfg[0] },
138 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
139 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
140 };
141
142 static int ipr_max_bus_speeds [] = {
143 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
144 };
145
146 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
147 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
148 module_param_named(max_speed, ipr_max_speed, uint, 0);
149 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
150 module_param_named(log_level, ipr_log_level, uint, 0);
151 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
152 module_param_named(testmode, ipr_testmode, int, 0);
153 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
154 module_param_named(fastfail, ipr_fastfail, int, 0);
155 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
156 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
157 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
158 module_param_named(enable_cache, ipr_enable_cache, int, 0);
159 MODULE_PARM_DESC(enable_cache, "Enable adapter's non-volatile write cache (default: 1)");
160 module_param_named(debug, ipr_debug, int, 0);
161 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
162 module_param_named(auto_create, ipr_auto_create, int, 0);
163 MODULE_PARM_DESC(auto_create, "Auto-create single device RAID 0 arrays when initialized (default: 1)");
164 MODULE_LICENSE("GPL");
165 MODULE_VERSION(IPR_DRIVER_VERSION);
166
167 /* A constant array of IOASCs/URCs/Error Messages */
168 static const
169 struct ipr_error_table_t ipr_error_table[] = {
170 {0x00000000, 1, 1,
171 "8155: An unknown error was received"},
172 {0x00330000, 0, 0,
173 "Soft underlength error"},
174 {0x005A0000, 0, 0,
175 "Command to be cancelled not found"},
176 {0x00808000, 0, 0,
177 "Qualified success"},
178 {0x01080000, 1, 1,
179 "FFFE: Soft device bus error recovered by the IOA"},
180 {0x01088100, 0, 1,
181 "4101: Soft device bus fabric error"},
182 {0x01170600, 0, 1,
183 "FFF9: Device sector reassign successful"},
184 {0x01170900, 0, 1,
185 "FFF7: Media error recovered by device rewrite procedures"},
186 {0x01180200, 0, 1,
187 "7001: IOA sector reassignment successful"},
188 {0x01180500, 0, 1,
189 "FFF9: Soft media error. Sector reassignment recommended"},
190 {0x01180600, 0, 1,
191 "FFF7: Media error recovered by IOA rewrite procedures"},
192 {0x01418000, 0, 1,
193 "FF3D: Soft PCI bus error recovered by the IOA"},
194 {0x01440000, 1, 1,
195 "FFF6: Device hardware error recovered by the IOA"},
196 {0x01448100, 0, 1,
197 "FFF6: Device hardware error recovered by the device"},
198 {0x01448200, 1, 1,
199 "FF3D: Soft IOA error recovered by the IOA"},
200 {0x01448300, 0, 1,
201 "FFFA: Undefined device response recovered by the IOA"},
202 {0x014A0000, 1, 1,
203 "FFF6: Device bus error, message or command phase"},
204 {0x014A8000, 0, 1,
205 "FFFE: Task Management Function failed"},
206 {0x015D0000, 0, 1,
207 "FFF6: Failure prediction threshold exceeded"},
208 {0x015D9200, 0, 1,
209 "8009: Impending cache battery pack failure"},
210 {0x02040400, 0, 0,
211 "34FF: Disk device format in progress"},
212 {0x023F0000, 0, 0,
213 "Synchronization required"},
214 {0x024E0000, 0, 0,
215 "No ready, IOA shutdown"},
216 {0x025A0000, 0, 0,
217 "Not ready, IOA has been shutdown"},
218 {0x02670100, 0, 1,
219 "3020: Storage subsystem configuration error"},
220 {0x03110B00, 0, 0,
221 "FFF5: Medium error, data unreadable, recommend reassign"},
222 {0x03110C00, 0, 0,
223 "7000: Medium error, data unreadable, do not reassign"},
224 {0x03310000, 0, 1,
225 "FFF3: Disk media format bad"},
226 {0x04050000, 0, 1,
227 "3002: Addressed device failed to respond to selection"},
228 {0x04080000, 1, 1,
229 "3100: Device bus error"},
230 {0x04080100, 0, 1,
231 "3109: IOA timed out a device command"},
232 {0x04088000, 0, 0,
233 "3120: SCSI bus is not operational"},
234 {0x04088100, 0, 1,
235 "4100: Hard device bus fabric error"},
236 {0x04118000, 0, 1,
237 "9000: IOA reserved area data check"},
238 {0x04118100, 0, 1,
239 "9001: IOA reserved area invalid data pattern"},
240 {0x04118200, 0, 1,
241 "9002: IOA reserved area LRC error"},
242 {0x04320000, 0, 1,
243 "102E: Out of alternate sectors for disk storage"},
244 {0x04330000, 1, 1,
245 "FFF4: Data transfer underlength error"},
246 {0x04338000, 1, 1,
247 "FFF4: Data transfer overlength error"},
248 {0x043E0100, 0, 1,
249 "3400: Logical unit failure"},
250 {0x04408500, 0, 1,
251 "FFF4: Device microcode is corrupt"},
252 {0x04418000, 1, 1,
253 "8150: PCI bus error"},
254 {0x04430000, 1, 0,
255 "Unsupported device bus message received"},
256 {0x04440000, 1, 1,
257 "FFF4: Disk device problem"},
258 {0x04448200, 1, 1,
259 "8150: Permanent IOA failure"},
260 {0x04448300, 0, 1,
261 "3010: Disk device returned wrong response to IOA"},
262 {0x04448400, 0, 1,
263 "8151: IOA microcode error"},
264 {0x04448500, 0, 0,
265 "Device bus status error"},
266 {0x04448600, 0, 1,
267 "8157: IOA error requiring IOA reset to recover"},
268 {0x04448700, 0, 0,
269 "ATA device status error"},
270 {0x04490000, 0, 0,
271 "Message reject received from the device"},
272 {0x04449200, 0, 1,
273 "8008: A permanent cache battery pack failure occurred"},
274 {0x0444A000, 0, 1,
275 "9090: Disk unit has been modified after the last known status"},
276 {0x0444A200, 0, 1,
277 "9081: IOA detected device error"},
278 {0x0444A300, 0, 1,
279 "9082: IOA detected device error"},
280 {0x044A0000, 1, 1,
281 "3110: Device bus error, message or command phase"},
282 {0x044A8000, 1, 1,
283 "3110: SAS Command / Task Management Function failed"},
284 {0x04670400, 0, 1,
285 "9091: Incorrect hardware configuration change has been detected"},
286 {0x04678000, 0, 1,
287 "9073: Invalid multi-adapter configuration"},
288 {0x04678100, 0, 1,
289 "4010: Incorrect connection between cascaded expanders"},
290 {0x04678200, 0, 1,
291 "4020: Connections exceed IOA design limits"},
292 {0x04678300, 0, 1,
293 "4030: Incorrect multipath connection"},
294 {0x04679000, 0, 1,
295 "4110: Unsupported enclosure function"},
296 {0x046E0000, 0, 1,
297 "FFF4: Command to logical unit failed"},
298 {0x05240000, 1, 0,
299 "Illegal request, invalid request type or request packet"},
300 {0x05250000, 0, 0,
301 "Illegal request, invalid resource handle"},
302 {0x05258000, 0, 0,
303 "Illegal request, commands not allowed to this device"},
304 {0x05258100, 0, 0,
305 "Illegal request, command not allowed to a secondary adapter"},
306 {0x05260000, 0, 0,
307 "Illegal request, invalid field in parameter list"},
308 {0x05260100, 0, 0,
309 "Illegal request, parameter not supported"},
310 {0x05260200, 0, 0,
311 "Illegal request, parameter value invalid"},
312 {0x052C0000, 0, 0,
313 "Illegal request, command sequence error"},
314 {0x052C8000, 1, 0,
315 "Illegal request, dual adapter support not enabled"},
316 {0x06040500, 0, 1,
317 "9031: Array protection temporarily suspended, protection resuming"},
318 {0x06040600, 0, 1,
319 "9040: Array protection temporarily suspended, protection resuming"},
320 {0x06288000, 0, 1,
321 "3140: Device bus not ready to ready transition"},
322 {0x06290000, 0, 1,
323 "FFFB: SCSI bus was reset"},
324 {0x06290500, 0, 0,
325 "FFFE: SCSI bus transition to single ended"},
326 {0x06290600, 0, 0,
327 "FFFE: SCSI bus transition to LVD"},
328 {0x06298000, 0, 1,
329 "FFFB: SCSI bus was reset by another initiator"},
330 {0x063F0300, 0, 1,
331 "3029: A device replacement has occurred"},
332 {0x064C8000, 0, 1,
333 "9051: IOA cache data exists for a missing or failed device"},
334 {0x064C8100, 0, 1,
335 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
336 {0x06670100, 0, 1,
337 "9025: Disk unit is not supported at its physical location"},
338 {0x06670600, 0, 1,
339 "3020: IOA detected a SCSI bus configuration error"},
340 {0x06678000, 0, 1,
341 "3150: SCSI bus configuration error"},
342 {0x06678100, 0, 1,
343 "9074: Asymmetric advanced function disk configuration"},
344 {0x06678300, 0, 1,
345 "4040: Incomplete multipath connection between IOA and enclosure"},
346 {0x06678400, 0, 1,
347 "4041: Incomplete multipath connection between enclosure and device"},
348 {0x06678500, 0, 1,
349 "9075: Incomplete multipath connection between IOA and remote IOA"},
350 {0x06678600, 0, 1,
351 "9076: Configuration error, missing remote IOA"},
352 {0x06679100, 0, 1,
353 "4050: Enclosure does not support a required multipath function"},
354 {0x06690200, 0, 1,
355 "9041: Array protection temporarily suspended"},
356 {0x06698200, 0, 1,
357 "9042: Corrupt array parity detected on specified device"},
358 {0x066B0200, 0, 1,
359 "9030: Array no longer protected due to missing or failed disk unit"},
360 {0x066B8000, 0, 1,
361 "9071: Link operational transition"},
362 {0x066B8100, 0, 1,
363 "9072: Link not operational transition"},
364 {0x066B8200, 0, 1,
365 "9032: Array exposed but still protected"},
366 {0x066B9100, 0, 1,
367 "4061: Multipath redundancy level got better"},
368 {0x066B9200, 0, 1,
369 "4060: Multipath redundancy level got worse"},
370 {0x07270000, 0, 0,
371 "Failure due to other device"},
372 {0x07278000, 0, 1,
373 "9008: IOA does not support functions expected by devices"},
374 {0x07278100, 0, 1,
375 "9010: Cache data associated with attached devices cannot be found"},
376 {0x07278200, 0, 1,
377 "9011: Cache data belongs to devices other than those attached"},
378 {0x07278400, 0, 1,
379 "9020: Array missing 2 or more devices with only 1 device present"},
380 {0x07278500, 0, 1,
381 "9021: Array missing 2 or more devices with 2 or more devices present"},
382 {0x07278600, 0, 1,
383 "9022: Exposed array is missing a required device"},
384 {0x07278700, 0, 1,
385 "9023: Array member(s) not at required physical locations"},
386 {0x07278800, 0, 1,
387 "9024: Array not functional due to present hardware configuration"},
388 {0x07278900, 0, 1,
389 "9026: Array not functional due to present hardware configuration"},
390 {0x07278A00, 0, 1,
391 "9027: Array is missing a device and parity is out of sync"},
392 {0x07278B00, 0, 1,
393 "9028: Maximum number of arrays already exist"},
394 {0x07278C00, 0, 1,
395 "9050: Required cache data cannot be located for a disk unit"},
396 {0x07278D00, 0, 1,
397 "9052: Cache data exists for a device that has been modified"},
398 {0x07278F00, 0, 1,
399 "9054: IOA resources not available due to previous problems"},
400 {0x07279100, 0, 1,
401 "9092: Disk unit requires initialization before use"},
402 {0x07279200, 0, 1,
403 "9029: Incorrect hardware configuration change has been detected"},
404 {0x07279600, 0, 1,
405 "9060: One or more disk pairs are missing from an array"},
406 {0x07279700, 0, 1,
407 "9061: One or more disks are missing from an array"},
408 {0x07279800, 0, 1,
409 "9062: One or more disks are missing from an array"},
410 {0x07279900, 0, 1,
411 "9063: Maximum number of functional arrays has been exceeded"},
412 {0x0B260000, 0, 0,
413 "Aborted command, invalid descriptor"},
414 {0x0B5A0000, 0, 0,
415 "Command terminated by host"}
416 };
417
418 static const struct ipr_ses_table_entry ipr_ses_table[] = {
419 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
420 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
421 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
422 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
423 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
424 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
425 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
426 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
427 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
428 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
429 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
430 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
431 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
432 };
433
434 /*
435 * Function Prototypes
436 */
437 static int ipr_reset_alert(struct ipr_cmnd *);
438 static void ipr_process_ccn(struct ipr_cmnd *);
439 static void ipr_process_error(struct ipr_cmnd *);
440 static void ipr_reset_ioa_job(struct ipr_cmnd *);
441 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
442 enum ipr_shutdown_type);
443
444 #ifdef CONFIG_SCSI_IPR_TRACE
445 /**
446 * ipr_trc_hook - Add a trace entry to the driver trace
447 * @ipr_cmd: ipr command struct
448 * @type: trace type
449 * @add_data: additional data
450 *
451 * Return value:
452 * none
453 **/
454 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
455 u8 type, u32 add_data)
456 {
457 struct ipr_trace_entry *trace_entry;
458 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
459
460 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
461 trace_entry->time = jiffies;
462 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
463 trace_entry->type = type;
464 trace_entry->ata_op_code = ipr_cmd->ioarcb.add_data.u.regs.command;
465 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
466 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
467 trace_entry->u.add_data = add_data;
468 }
469 #else
470 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
471 #endif
472
473 /**
474 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
475 * @ipr_cmd: ipr command struct
476 *
477 * Return value:
478 * none
479 **/
480 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
481 {
482 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
483 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
484
485 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
486 ioarcb->write_data_transfer_length = 0;
487 ioarcb->read_data_transfer_length = 0;
488 ioarcb->write_ioadl_len = 0;
489 ioarcb->read_ioadl_len = 0;
490 ioasa->ioasc = 0;
491 ioasa->residual_data_len = 0;
492 ioasa->u.gata.status = 0;
493
494 ipr_cmd->scsi_cmd = NULL;
495 ipr_cmd->qc = NULL;
496 ipr_cmd->sense_buffer[0] = 0;
497 ipr_cmd->dma_use_sg = 0;
498 }
499
500 /**
501 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
502 * @ipr_cmd: ipr command struct
503 *
504 * Return value:
505 * none
506 **/
507 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
508 {
509 ipr_reinit_ipr_cmnd(ipr_cmd);
510 ipr_cmd->u.scratch = 0;
511 ipr_cmd->sibling = NULL;
512 init_timer(&ipr_cmd->timer);
513 }
514
515 /**
516 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
517 * @ioa_cfg: ioa config struct
518 *
519 * Return value:
520 * pointer to ipr command struct
521 **/
522 static
523 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
524 {
525 struct ipr_cmnd *ipr_cmd;
526
527 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
528 list_del(&ipr_cmd->queue);
529 ipr_init_ipr_cmnd(ipr_cmd);
530
531 return ipr_cmd;
532 }
533
534 /**
535 * ipr_unmap_sglist - Unmap scatterlist if mapped
536 * @ioa_cfg: ioa config struct
537 * @ipr_cmd: ipr command struct
538 *
539 * Return value:
540 * nothing
541 **/
542 static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
543 struct ipr_cmnd *ipr_cmd)
544 {
545 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
546
547 if (ipr_cmd->dma_use_sg) {
548 if (scsi_cmd->use_sg > 0) {
549 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
550 scsi_cmd->use_sg,
551 scsi_cmd->sc_data_direction);
552 } else {
553 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
554 scsi_cmd->request_bufflen,
555 scsi_cmd->sc_data_direction);
556 }
557 }
558 }
559
560 /**
561 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
562 * @ioa_cfg: ioa config struct
563 * @clr_ints: interrupts to clear
564 *
565 * This function masks all interrupts on the adapter, then clears the
566 * interrupts specified in the mask
567 *
568 * Return value:
569 * none
570 **/
571 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
572 u32 clr_ints)
573 {
574 volatile u32 int_reg;
575
576 /* Stop new interrupts */
577 ioa_cfg->allow_interrupts = 0;
578
579 /* Set interrupt mask to stop all new interrupts */
580 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
581
582 /* Clear any pending interrupts */
583 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
584 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
585 }
586
587 /**
588 * ipr_save_pcix_cmd_reg - Save PCI-X command register
589 * @ioa_cfg: ioa config struct
590 *
591 * Return value:
592 * 0 on success / -EIO on failure
593 **/
594 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
595 {
596 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
597
598 if (pcix_cmd_reg == 0)
599 return 0;
600
601 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
602 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
603 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
604 return -EIO;
605 }
606
607 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
608 return 0;
609 }
610
611 /**
612 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
613 * @ioa_cfg: ioa config struct
614 *
615 * Return value:
616 * 0 on success / -EIO on failure
617 **/
618 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
619 {
620 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
621
622 if (pcix_cmd_reg) {
623 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
624 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
625 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
626 return -EIO;
627 }
628 }
629
630 return 0;
631 }
632
633 /**
634 * ipr_sata_eh_done - done function for aborted SATA commands
635 * @ipr_cmd: ipr command struct
636 *
637 * This function is invoked for ops generated to SATA
638 * devices which are being aborted.
639 *
640 * Return value:
641 * none
642 **/
643 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
644 {
645 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
646 struct ata_queued_cmd *qc = ipr_cmd->qc;
647 struct ipr_sata_port *sata_port = qc->ap->private_data;
648
649 qc->err_mask |= AC_ERR_OTHER;
650 sata_port->ioasa.status |= ATA_BUSY;
651 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
652 ata_qc_complete(qc);
653 }
654
655 /**
656 * ipr_scsi_eh_done - mid-layer done function for aborted ops
657 * @ipr_cmd: ipr command struct
658 *
659 * This function is invoked by the interrupt handler for
660 * ops generated by the SCSI mid-layer which are being aborted.
661 *
662 * Return value:
663 * none
664 **/
665 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
666 {
667 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
668 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
669
670 scsi_cmd->result |= (DID_ERROR << 16);
671
672 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
673 scsi_cmd->scsi_done(scsi_cmd);
674 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
675 }
676
677 /**
678 * ipr_fail_all_ops - Fails all outstanding ops.
679 * @ioa_cfg: ioa config struct
680 *
681 * This function fails all outstanding ops.
682 *
683 * Return value:
684 * none
685 **/
686 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
687 {
688 struct ipr_cmnd *ipr_cmd, *temp;
689
690 ENTER;
691 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
692 list_del(&ipr_cmd->queue);
693
694 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
695 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
696
697 if (ipr_cmd->scsi_cmd)
698 ipr_cmd->done = ipr_scsi_eh_done;
699 else if (ipr_cmd->qc)
700 ipr_cmd->done = ipr_sata_eh_done;
701
702 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
703 del_timer(&ipr_cmd->timer);
704 ipr_cmd->done(ipr_cmd);
705 }
706
707 LEAVE;
708 }
709
710 /**
711 * ipr_do_req - Send driver initiated requests.
712 * @ipr_cmd: ipr command struct
713 * @done: done function
714 * @timeout_func: timeout function
715 * @timeout: timeout value
716 *
717 * This function sends the specified command to the adapter with the
718 * timeout given. The done function is invoked on command completion.
719 *
720 * Return value:
721 * none
722 **/
723 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
724 void (*done) (struct ipr_cmnd *),
725 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
726 {
727 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
728
729 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
730
731 ipr_cmd->done = done;
732
733 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
734 ipr_cmd->timer.expires = jiffies + timeout;
735 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
736
737 add_timer(&ipr_cmd->timer);
738
739 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
740
741 mb();
742 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
743 ioa_cfg->regs.ioarrin_reg);
744 }
745
746 /**
747 * ipr_internal_cmd_done - Op done function for an internally generated op.
748 * @ipr_cmd: ipr command struct
749 *
750 * This function is the op done function for an internally generated,
751 * blocking op. It simply wakes the sleeping thread.
752 *
753 * Return value:
754 * none
755 **/
756 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
757 {
758 if (ipr_cmd->sibling)
759 ipr_cmd->sibling = NULL;
760 else
761 complete(&ipr_cmd->completion);
762 }
763
764 /**
765 * ipr_send_blocking_cmd - Send command and sleep on its completion.
766 * @ipr_cmd: ipr command struct
767 * @timeout_func: function to invoke if command times out
768 * @timeout: timeout
769 *
770 * Return value:
771 * none
772 **/
773 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
774 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
775 u32 timeout)
776 {
777 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
778
779 init_completion(&ipr_cmd->completion);
780 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
781
782 spin_unlock_irq(ioa_cfg->host->host_lock);
783 wait_for_completion(&ipr_cmd->completion);
784 spin_lock_irq(ioa_cfg->host->host_lock);
785 }
786
787 /**
788 * ipr_send_hcam - Send an HCAM to the adapter.
789 * @ioa_cfg: ioa config struct
790 * @type: HCAM type
791 * @hostrcb: hostrcb struct
792 *
793 * This function will send a Host Controlled Async command to the adapter.
794 * If HCAMs are currently not allowed to be issued to the adapter, it will
795 * place the hostrcb on the free queue.
796 *
797 * Return value:
798 * none
799 **/
800 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
801 struct ipr_hostrcb *hostrcb)
802 {
803 struct ipr_cmnd *ipr_cmd;
804 struct ipr_ioarcb *ioarcb;
805
806 if (ioa_cfg->allow_cmds) {
807 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
808 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
809 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
810
811 ipr_cmd->u.hostrcb = hostrcb;
812 ioarcb = &ipr_cmd->ioarcb;
813
814 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
815 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
816 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
817 ioarcb->cmd_pkt.cdb[1] = type;
818 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
819 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
820
821 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
822 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
823 ipr_cmd->ioadl[0].flags_and_data_len =
824 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
825 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
826
827 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
828 ipr_cmd->done = ipr_process_ccn;
829 else
830 ipr_cmd->done = ipr_process_error;
831
832 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
833
834 mb();
835 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
836 ioa_cfg->regs.ioarrin_reg);
837 } else {
838 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
839 }
840 }
841
842 /**
843 * ipr_init_res_entry - Initialize a resource entry struct.
844 * @res: resource entry struct
845 *
846 * Return value:
847 * none
848 **/
849 static void ipr_init_res_entry(struct ipr_resource_entry *res)
850 {
851 res->needs_sync_complete = 0;
852 res->in_erp = 0;
853 res->add_to_ml = 0;
854 res->del_from_ml = 0;
855 res->resetting_device = 0;
856 res->sdev = NULL;
857 res->sata_port = NULL;
858 }
859
860 /**
861 * ipr_handle_config_change - Handle a config change from the adapter
862 * @ioa_cfg: ioa config struct
863 * @hostrcb: hostrcb
864 *
865 * Return value:
866 * none
867 **/
868 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
869 struct ipr_hostrcb *hostrcb)
870 {
871 struct ipr_resource_entry *res = NULL;
872 struct ipr_config_table_entry *cfgte;
873 u32 is_ndn = 1;
874
875 cfgte = &hostrcb->hcam.u.ccn.cfgte;
876
877 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
878 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
879 sizeof(cfgte->res_addr))) {
880 is_ndn = 0;
881 break;
882 }
883 }
884
885 if (is_ndn) {
886 if (list_empty(&ioa_cfg->free_res_q)) {
887 ipr_send_hcam(ioa_cfg,
888 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
889 hostrcb);
890 return;
891 }
892
893 res = list_entry(ioa_cfg->free_res_q.next,
894 struct ipr_resource_entry, queue);
895
896 list_del(&res->queue);
897 ipr_init_res_entry(res);
898 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
899 }
900
901 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
902
903 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
904 if (res->sdev) {
905 res->del_from_ml = 1;
906 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
907 if (ioa_cfg->allow_ml_add_del)
908 schedule_work(&ioa_cfg->work_q);
909 } else
910 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
911 } else if (!res->sdev) {
912 res->add_to_ml = 1;
913 if (ioa_cfg->allow_ml_add_del)
914 schedule_work(&ioa_cfg->work_q);
915 }
916
917 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
918 }
919
920 /**
921 * ipr_process_ccn - Op done function for a CCN.
922 * @ipr_cmd: ipr command struct
923 *
924 * This function is the op done function for a configuration
925 * change notification host controlled async from the adapter.
926 *
927 * Return value:
928 * none
929 **/
930 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
931 {
932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
933 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
934 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
935
936 list_del(&hostrcb->queue);
937 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
938
939 if (ioasc) {
940 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
941 dev_err(&ioa_cfg->pdev->dev,
942 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
943
944 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
945 } else {
946 ipr_handle_config_change(ioa_cfg, hostrcb);
947 }
948 }
949
950 /**
951 * ipr_log_vpd - Log the passed VPD to the error log.
952 * @vpd: vendor/product id/sn struct
953 *
954 * Return value:
955 * none
956 **/
957 static void ipr_log_vpd(struct ipr_vpd *vpd)
958 {
959 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
960 + IPR_SERIAL_NUM_LEN];
961
962 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
963 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
964 IPR_PROD_ID_LEN);
965 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
966 ipr_err("Vendor/Product ID: %s\n", buffer);
967
968 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
969 buffer[IPR_SERIAL_NUM_LEN] = '\0';
970 ipr_err(" Serial Number: %s\n", buffer);
971 }
972
973 /**
974 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
975 * @vpd: vendor/product id/sn/wwn struct
976 *
977 * Return value:
978 * none
979 **/
980 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
981 {
982 ipr_log_vpd(&vpd->vpd);
983 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
984 be32_to_cpu(vpd->wwid[1]));
985 }
986
987 /**
988 * ipr_log_enhanced_cache_error - Log a cache error.
989 * @ioa_cfg: ioa config struct
990 * @hostrcb: hostrcb struct
991 *
992 * Return value:
993 * none
994 **/
995 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
996 struct ipr_hostrcb *hostrcb)
997 {
998 struct ipr_hostrcb_type_12_error *error =
999 &hostrcb->hcam.u.error.u.type_12_error;
1000
1001 ipr_err("-----Current Configuration-----\n");
1002 ipr_err("Cache Directory Card Information:\n");
1003 ipr_log_ext_vpd(&error->ioa_vpd);
1004 ipr_err("Adapter Card Information:\n");
1005 ipr_log_ext_vpd(&error->cfc_vpd);
1006
1007 ipr_err("-----Expected Configuration-----\n");
1008 ipr_err("Cache Directory Card Information:\n");
1009 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1010 ipr_err("Adapter Card Information:\n");
1011 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1012
1013 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1014 be32_to_cpu(error->ioa_data[0]),
1015 be32_to_cpu(error->ioa_data[1]),
1016 be32_to_cpu(error->ioa_data[2]));
1017 }
1018
1019 /**
1020 * ipr_log_cache_error - Log a cache error.
1021 * @ioa_cfg: ioa config struct
1022 * @hostrcb: hostrcb struct
1023 *
1024 * Return value:
1025 * none
1026 **/
1027 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1028 struct ipr_hostrcb *hostrcb)
1029 {
1030 struct ipr_hostrcb_type_02_error *error =
1031 &hostrcb->hcam.u.error.u.type_02_error;
1032
1033 ipr_err("-----Current Configuration-----\n");
1034 ipr_err("Cache Directory Card Information:\n");
1035 ipr_log_vpd(&error->ioa_vpd);
1036 ipr_err("Adapter Card Information:\n");
1037 ipr_log_vpd(&error->cfc_vpd);
1038
1039 ipr_err("-----Expected Configuration-----\n");
1040 ipr_err("Cache Directory Card Information:\n");
1041 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1042 ipr_err("Adapter Card Information:\n");
1043 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1044
1045 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1046 be32_to_cpu(error->ioa_data[0]),
1047 be32_to_cpu(error->ioa_data[1]),
1048 be32_to_cpu(error->ioa_data[2]));
1049 }
1050
1051 /**
1052 * ipr_log_enhanced_config_error - Log a configuration error.
1053 * @ioa_cfg: ioa config struct
1054 * @hostrcb: hostrcb struct
1055 *
1056 * Return value:
1057 * none
1058 **/
1059 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1060 struct ipr_hostrcb *hostrcb)
1061 {
1062 int errors_logged, i;
1063 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1064 struct ipr_hostrcb_type_13_error *error;
1065
1066 error = &hostrcb->hcam.u.error.u.type_13_error;
1067 errors_logged = be32_to_cpu(error->errors_logged);
1068
1069 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1070 be32_to_cpu(error->errors_detected), errors_logged);
1071
1072 dev_entry = error->dev;
1073
1074 for (i = 0; i < errors_logged; i++, dev_entry++) {
1075 ipr_err_separator;
1076
1077 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1078 ipr_log_ext_vpd(&dev_entry->vpd);
1079
1080 ipr_err("-----New Device Information-----\n");
1081 ipr_log_ext_vpd(&dev_entry->new_vpd);
1082
1083 ipr_err("Cache Directory Card Information:\n");
1084 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1085
1086 ipr_err("Adapter Card Information:\n");
1087 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1088 }
1089 }
1090
1091 /**
1092 * ipr_log_config_error - Log a configuration error.
1093 * @ioa_cfg: ioa config struct
1094 * @hostrcb: hostrcb struct
1095 *
1096 * Return value:
1097 * none
1098 **/
1099 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1100 struct ipr_hostrcb *hostrcb)
1101 {
1102 int errors_logged, i;
1103 struct ipr_hostrcb_device_data_entry *dev_entry;
1104 struct ipr_hostrcb_type_03_error *error;
1105
1106 error = &hostrcb->hcam.u.error.u.type_03_error;
1107 errors_logged = be32_to_cpu(error->errors_logged);
1108
1109 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1110 be32_to_cpu(error->errors_detected), errors_logged);
1111
1112 dev_entry = error->dev;
1113
1114 for (i = 0; i < errors_logged; i++, dev_entry++) {
1115 ipr_err_separator;
1116
1117 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1118 ipr_log_vpd(&dev_entry->vpd);
1119
1120 ipr_err("-----New Device Information-----\n");
1121 ipr_log_vpd(&dev_entry->new_vpd);
1122
1123 ipr_err("Cache Directory Card Information:\n");
1124 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1125
1126 ipr_err("Adapter Card Information:\n");
1127 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1128
1129 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1130 be32_to_cpu(dev_entry->ioa_data[0]),
1131 be32_to_cpu(dev_entry->ioa_data[1]),
1132 be32_to_cpu(dev_entry->ioa_data[2]),
1133 be32_to_cpu(dev_entry->ioa_data[3]),
1134 be32_to_cpu(dev_entry->ioa_data[4]));
1135 }
1136 }
1137
1138 /**
1139 * ipr_log_enhanced_array_error - Log an array configuration error.
1140 * @ioa_cfg: ioa config struct
1141 * @hostrcb: hostrcb struct
1142 *
1143 * Return value:
1144 * none
1145 **/
1146 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1147 struct ipr_hostrcb *hostrcb)
1148 {
1149 int i, num_entries;
1150 struct ipr_hostrcb_type_14_error *error;
1151 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1152 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1153
1154 error = &hostrcb->hcam.u.error.u.type_14_error;
1155
1156 ipr_err_separator;
1157
1158 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1159 error->protection_level,
1160 ioa_cfg->host->host_no,
1161 error->last_func_vset_res_addr.bus,
1162 error->last_func_vset_res_addr.target,
1163 error->last_func_vset_res_addr.lun);
1164
1165 ipr_err_separator;
1166
1167 array_entry = error->array_member;
1168 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1169 sizeof(error->array_member));
1170
1171 for (i = 0; i < num_entries; i++, array_entry++) {
1172 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1173 continue;
1174
1175 if (be32_to_cpu(error->exposed_mode_adn) == i)
1176 ipr_err("Exposed Array Member %d:\n", i);
1177 else
1178 ipr_err("Array Member %d:\n", i);
1179
1180 ipr_log_ext_vpd(&array_entry->vpd);
1181 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1182 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1183 "Expected Location");
1184
1185 ipr_err_separator;
1186 }
1187 }
1188
1189 /**
1190 * ipr_log_array_error - Log an array configuration error.
1191 * @ioa_cfg: ioa config struct
1192 * @hostrcb: hostrcb struct
1193 *
1194 * Return value:
1195 * none
1196 **/
1197 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1198 struct ipr_hostrcb *hostrcb)
1199 {
1200 int i;
1201 struct ipr_hostrcb_type_04_error *error;
1202 struct ipr_hostrcb_array_data_entry *array_entry;
1203 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1204
1205 error = &hostrcb->hcam.u.error.u.type_04_error;
1206
1207 ipr_err_separator;
1208
1209 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1210 error->protection_level,
1211 ioa_cfg->host->host_no,
1212 error->last_func_vset_res_addr.bus,
1213 error->last_func_vset_res_addr.target,
1214 error->last_func_vset_res_addr.lun);
1215
1216 ipr_err_separator;
1217
1218 array_entry = error->array_member;
1219
1220 for (i = 0; i < 18; i++) {
1221 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1222 continue;
1223
1224 if (be32_to_cpu(error->exposed_mode_adn) == i)
1225 ipr_err("Exposed Array Member %d:\n", i);
1226 else
1227 ipr_err("Array Member %d:\n", i);
1228
1229 ipr_log_vpd(&array_entry->vpd);
1230
1231 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1232 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1233 "Expected Location");
1234
1235 ipr_err_separator;
1236
1237 if (i == 9)
1238 array_entry = error->array_member2;
1239 else
1240 array_entry++;
1241 }
1242 }
1243
1244 /**
1245 * ipr_log_hex_data - Log additional hex IOA error data.
1246 * @ioa_cfg: ioa config struct
1247 * @data: IOA error data
1248 * @len: data length
1249 *
1250 * Return value:
1251 * none
1252 **/
1253 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1254 {
1255 int i;
1256
1257 if (len == 0)
1258 return;
1259
1260 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1261 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1262
1263 for (i = 0; i < len / 4; i += 4) {
1264 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1265 be32_to_cpu(data[i]),
1266 be32_to_cpu(data[i+1]),
1267 be32_to_cpu(data[i+2]),
1268 be32_to_cpu(data[i+3]));
1269 }
1270 }
1271
1272 /**
1273 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1274 * @ioa_cfg: ioa config struct
1275 * @hostrcb: hostrcb struct
1276 *
1277 * Return value:
1278 * none
1279 **/
1280 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1281 struct ipr_hostrcb *hostrcb)
1282 {
1283 struct ipr_hostrcb_type_17_error *error;
1284
1285 error = &hostrcb->hcam.u.error.u.type_17_error;
1286 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1287
1288 ipr_err("%s\n", error->failure_reason);
1289 ipr_err("Remote Adapter VPD:\n");
1290 ipr_log_ext_vpd(&error->vpd);
1291 ipr_log_hex_data(ioa_cfg, error->data,
1292 be32_to_cpu(hostrcb->hcam.length) -
1293 (offsetof(struct ipr_hostrcb_error, u) +
1294 offsetof(struct ipr_hostrcb_type_17_error, data)));
1295 }
1296
1297 /**
1298 * ipr_log_dual_ioa_error - Log a dual adapter error.
1299 * @ioa_cfg: ioa config struct
1300 * @hostrcb: hostrcb struct
1301 *
1302 * Return value:
1303 * none
1304 **/
1305 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1306 struct ipr_hostrcb *hostrcb)
1307 {
1308 struct ipr_hostrcb_type_07_error *error;
1309
1310 error = &hostrcb->hcam.u.error.u.type_07_error;
1311 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1312
1313 ipr_err("%s\n", error->failure_reason);
1314 ipr_err("Remote Adapter VPD:\n");
1315 ipr_log_vpd(&error->vpd);
1316 ipr_log_hex_data(ioa_cfg, error->data,
1317 be32_to_cpu(hostrcb->hcam.length) -
1318 (offsetof(struct ipr_hostrcb_error, u) +
1319 offsetof(struct ipr_hostrcb_type_07_error, data)));
1320 }
1321
1322 static const struct {
1323 u8 active;
1324 char *desc;
1325 } path_active_desc[] = {
1326 { IPR_PATH_NO_INFO, "Path" },
1327 { IPR_PATH_ACTIVE, "Active path" },
1328 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1329 };
1330
1331 static const struct {
1332 u8 state;
1333 char *desc;
1334 } path_state_desc[] = {
1335 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1336 { IPR_PATH_HEALTHY, "is healthy" },
1337 { IPR_PATH_DEGRADED, "is degraded" },
1338 { IPR_PATH_FAILED, "is failed" }
1339 };
1340
1341 /**
1342 * ipr_log_fabric_path - Log a fabric path error
1343 * @hostrcb: hostrcb struct
1344 * @fabric: fabric descriptor
1345 *
1346 * Return value:
1347 * none
1348 **/
1349 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1350 struct ipr_hostrcb_fabric_desc *fabric)
1351 {
1352 int i, j;
1353 u8 path_state = fabric->path_state;
1354 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1355 u8 state = path_state & IPR_PATH_STATE_MASK;
1356
1357 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1358 if (path_active_desc[i].active != active)
1359 continue;
1360
1361 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1362 if (path_state_desc[j].state != state)
1363 continue;
1364
1365 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1366 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1367 path_active_desc[i].desc, path_state_desc[j].desc,
1368 fabric->ioa_port);
1369 } else if (fabric->cascaded_expander == 0xff) {
1370 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1371 path_active_desc[i].desc, path_state_desc[j].desc,
1372 fabric->ioa_port, fabric->phy);
1373 } else if (fabric->phy == 0xff) {
1374 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1375 path_active_desc[i].desc, path_state_desc[j].desc,
1376 fabric->ioa_port, fabric->cascaded_expander);
1377 } else {
1378 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1379 path_active_desc[i].desc, path_state_desc[j].desc,
1380 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1381 }
1382 return;
1383 }
1384 }
1385
1386 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1387 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1388 }
1389
1390 static const struct {
1391 u8 type;
1392 char *desc;
1393 } path_type_desc[] = {
1394 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
1395 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
1396 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
1397 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
1398 };
1399
1400 static const struct {
1401 u8 status;
1402 char *desc;
1403 } path_status_desc[] = {
1404 { IPR_PATH_CFG_NO_PROB, "Functional" },
1405 { IPR_PATH_CFG_DEGRADED, "Degraded" },
1406 { IPR_PATH_CFG_FAILED, "Failed" },
1407 { IPR_PATH_CFG_SUSPECT, "Suspect" },
1408 { IPR_PATH_NOT_DETECTED, "Missing" },
1409 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
1410 };
1411
1412 static const char *link_rate[] = {
1413 "unknown",
1414 "disabled",
1415 "phy reset problem",
1416 "spinup hold",
1417 "port selector",
1418 "unknown",
1419 "unknown",
1420 "unknown",
1421 "1.5Gbps",
1422 "3.0Gbps",
1423 "unknown",
1424 "unknown",
1425 "unknown",
1426 "unknown",
1427 "unknown",
1428 "unknown"
1429 };
1430
1431 /**
1432 * ipr_log_path_elem - Log a fabric path element.
1433 * @hostrcb: hostrcb struct
1434 * @cfg: fabric path element struct
1435 *
1436 * Return value:
1437 * none
1438 **/
1439 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
1440 struct ipr_hostrcb_config_element *cfg)
1441 {
1442 int i, j;
1443 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
1444 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
1445
1446 if (type == IPR_PATH_CFG_NOT_EXIST)
1447 return;
1448
1449 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
1450 if (path_type_desc[i].type != type)
1451 continue;
1452
1453 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
1454 if (path_status_desc[j].status != status)
1455 continue;
1456
1457 if (type == IPR_PATH_CFG_IOA_PORT) {
1458 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
1459 path_status_desc[j].desc, path_type_desc[i].desc,
1460 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1461 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1462 } else {
1463 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
1464 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
1465 path_status_desc[j].desc, path_type_desc[i].desc,
1466 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1467 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1468 } else if (cfg->cascaded_expander == 0xff) {
1469 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
1470 "WWN=%08X%08X\n", path_status_desc[j].desc,
1471 path_type_desc[i].desc, cfg->phy,
1472 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1473 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1474 } else if (cfg->phy == 0xff) {
1475 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
1476 "WWN=%08X%08X\n", path_status_desc[j].desc,
1477 path_type_desc[i].desc, cfg->cascaded_expander,
1478 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1479 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1480 } else {
1481 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
1482 "WWN=%08X%08X\n", path_status_desc[j].desc,
1483 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
1484 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1485 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1486 }
1487 }
1488 return;
1489 }
1490 }
1491
1492 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
1493 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
1494 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
1495 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
1496 }
1497
1498 /**
1499 * ipr_log_fabric_error - Log a fabric error.
1500 * @ioa_cfg: ioa config struct
1501 * @hostrcb: hostrcb struct
1502 *
1503 * Return value:
1504 * none
1505 **/
1506 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
1507 struct ipr_hostrcb *hostrcb)
1508 {
1509 struct ipr_hostrcb_type_20_error *error;
1510 struct ipr_hostrcb_fabric_desc *fabric;
1511 struct ipr_hostrcb_config_element *cfg;
1512 int i, add_len;
1513
1514 error = &hostrcb->hcam.u.error.u.type_20_error;
1515 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1516 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
1517
1518 add_len = be32_to_cpu(hostrcb->hcam.length) -
1519 (offsetof(struct ipr_hostrcb_error, u) +
1520 offsetof(struct ipr_hostrcb_type_20_error, desc));
1521
1522 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
1523 ipr_log_fabric_path(hostrcb, fabric);
1524 for_each_fabric_cfg(fabric, cfg)
1525 ipr_log_path_elem(hostrcb, cfg);
1526
1527 add_len -= be16_to_cpu(fabric->length);
1528 fabric = (struct ipr_hostrcb_fabric_desc *)
1529 ((unsigned long)fabric + be16_to_cpu(fabric->length));
1530 }
1531
1532 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
1533 }
1534
1535 /**
1536 * ipr_log_generic_error - Log an adapter error.
1537 * @ioa_cfg: ioa config struct
1538 * @hostrcb: hostrcb struct
1539 *
1540 * Return value:
1541 * none
1542 **/
1543 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1544 struct ipr_hostrcb *hostrcb)
1545 {
1546 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
1547 be32_to_cpu(hostrcb->hcam.length));
1548 }
1549
1550 /**
1551 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1552 * @ioasc: IOASC
1553 *
1554 * This function will return the index of into the ipr_error_table
1555 * for the specified IOASC. If the IOASC is not in the table,
1556 * 0 will be returned, which points to the entry used for unknown errors.
1557 *
1558 * Return value:
1559 * index into the ipr_error_table
1560 **/
1561 static u32 ipr_get_error(u32 ioasc)
1562 {
1563 int i;
1564
1565 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1566 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
1567 return i;
1568
1569 return 0;
1570 }
1571
1572 /**
1573 * ipr_handle_log_data - Log an adapter error.
1574 * @ioa_cfg: ioa config struct
1575 * @hostrcb: hostrcb struct
1576 *
1577 * This function logs an adapter error to the system.
1578 *
1579 * Return value:
1580 * none
1581 **/
1582 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1583 struct ipr_hostrcb *hostrcb)
1584 {
1585 u32 ioasc;
1586 int error_index;
1587
1588 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1589 return;
1590
1591 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1592 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1593
1594 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1595
1596 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1597 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1598 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1599 scsi_report_bus_reset(ioa_cfg->host,
1600 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1601 }
1602
1603 error_index = ipr_get_error(ioasc);
1604
1605 if (!ipr_error_table[error_index].log_hcam)
1606 return;
1607
1608 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
1609
1610 /* Set indication we have logged an error */
1611 ioa_cfg->errors_logged++;
1612
1613 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1614 return;
1615 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1616 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1617
1618 switch (hostrcb->hcam.overlay_id) {
1619 case IPR_HOST_RCB_OVERLAY_ID_2:
1620 ipr_log_cache_error(ioa_cfg, hostrcb);
1621 break;
1622 case IPR_HOST_RCB_OVERLAY_ID_3:
1623 ipr_log_config_error(ioa_cfg, hostrcb);
1624 break;
1625 case IPR_HOST_RCB_OVERLAY_ID_4:
1626 case IPR_HOST_RCB_OVERLAY_ID_6:
1627 ipr_log_array_error(ioa_cfg, hostrcb);
1628 break;
1629 case IPR_HOST_RCB_OVERLAY_ID_7:
1630 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
1631 break;
1632 case IPR_HOST_RCB_OVERLAY_ID_12:
1633 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
1634 break;
1635 case IPR_HOST_RCB_OVERLAY_ID_13:
1636 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
1637 break;
1638 case IPR_HOST_RCB_OVERLAY_ID_14:
1639 case IPR_HOST_RCB_OVERLAY_ID_16:
1640 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
1641 break;
1642 case IPR_HOST_RCB_OVERLAY_ID_17:
1643 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
1644 break;
1645 case IPR_HOST_RCB_OVERLAY_ID_20:
1646 ipr_log_fabric_error(ioa_cfg, hostrcb);
1647 break;
1648 case IPR_HOST_RCB_OVERLAY_ID_1:
1649 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1650 default:
1651 ipr_log_generic_error(ioa_cfg, hostrcb);
1652 break;
1653 }
1654 }
1655
1656 /**
1657 * ipr_process_error - Op done function for an adapter error log.
1658 * @ipr_cmd: ipr command struct
1659 *
1660 * This function is the op done function for an error log host
1661 * controlled async from the adapter. It will log the error and
1662 * send the HCAM back to the adapter.
1663 *
1664 * Return value:
1665 * none
1666 **/
1667 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1668 {
1669 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1670 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1671 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1672
1673 list_del(&hostrcb->queue);
1674 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1675
1676 if (!ioasc) {
1677 ipr_handle_log_data(ioa_cfg, hostrcb);
1678 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1679 dev_err(&ioa_cfg->pdev->dev,
1680 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1681 }
1682
1683 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1684 }
1685
1686 /**
1687 * ipr_timeout - An internally generated op has timed out.
1688 * @ipr_cmd: ipr command struct
1689 *
1690 * This function blocks host requests and initiates an
1691 * adapter reset.
1692 *
1693 * Return value:
1694 * none
1695 **/
1696 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1697 {
1698 unsigned long lock_flags = 0;
1699 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1700
1701 ENTER;
1702 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1703
1704 ioa_cfg->errors_logged++;
1705 dev_err(&ioa_cfg->pdev->dev,
1706 "Adapter being reset due to command timeout.\n");
1707
1708 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1709 ioa_cfg->sdt_state = GET_DUMP;
1710
1711 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1712 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1713
1714 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1715 LEAVE;
1716 }
1717
1718 /**
1719 * ipr_oper_timeout - Adapter timed out transitioning to operational
1720 * @ipr_cmd: ipr command struct
1721 *
1722 * This function blocks host requests and initiates an
1723 * adapter reset.
1724 *
1725 * Return value:
1726 * none
1727 **/
1728 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1729 {
1730 unsigned long lock_flags = 0;
1731 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1732
1733 ENTER;
1734 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1735
1736 ioa_cfg->errors_logged++;
1737 dev_err(&ioa_cfg->pdev->dev,
1738 "Adapter timed out transitioning to operational.\n");
1739
1740 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1741 ioa_cfg->sdt_state = GET_DUMP;
1742
1743 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1744 if (ipr_fastfail)
1745 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1746 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1747 }
1748
1749 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1750 LEAVE;
1751 }
1752
1753 /**
1754 * ipr_reset_reload - Reset/Reload the IOA
1755 * @ioa_cfg: ioa config struct
1756 * @shutdown_type: shutdown type
1757 *
1758 * This function resets the adapter and re-initializes it.
1759 * This function assumes that all new host commands have been stopped.
1760 * Return value:
1761 * SUCCESS / FAILED
1762 **/
1763 static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1764 enum ipr_shutdown_type shutdown_type)
1765 {
1766 if (!ioa_cfg->in_reset_reload)
1767 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1768
1769 spin_unlock_irq(ioa_cfg->host->host_lock);
1770 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1771 spin_lock_irq(ioa_cfg->host->host_lock);
1772
1773 /* If we got hit with a host reset while we were already resetting
1774 the adapter for some reason, and the reset failed. */
1775 if (ioa_cfg->ioa_is_dead) {
1776 ipr_trace;
1777 return FAILED;
1778 }
1779
1780 return SUCCESS;
1781 }
1782
1783 /**
1784 * ipr_find_ses_entry - Find matching SES in SES table
1785 * @res: resource entry struct of SES
1786 *
1787 * Return value:
1788 * pointer to SES table entry / NULL on failure
1789 **/
1790 static const struct ipr_ses_table_entry *
1791 ipr_find_ses_entry(struct ipr_resource_entry *res)
1792 {
1793 int i, j, matches;
1794 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1795
1796 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1797 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1798 if (ste->compare_product_id_byte[j] == 'X') {
1799 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1800 matches++;
1801 else
1802 break;
1803 } else
1804 matches++;
1805 }
1806
1807 if (matches == IPR_PROD_ID_LEN)
1808 return ste;
1809 }
1810
1811 return NULL;
1812 }
1813
1814 /**
1815 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1816 * @ioa_cfg: ioa config struct
1817 * @bus: SCSI bus
1818 * @bus_width: bus width
1819 *
1820 * Return value:
1821 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1822 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1823 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1824 * max 160MHz = max 320MB/sec).
1825 **/
1826 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1827 {
1828 struct ipr_resource_entry *res;
1829 const struct ipr_ses_table_entry *ste;
1830 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1831
1832 /* Loop through each config table entry in the config table buffer */
1833 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1834 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1835 continue;
1836
1837 if (bus != res->cfgte.res_addr.bus)
1838 continue;
1839
1840 if (!(ste = ipr_find_ses_entry(res)))
1841 continue;
1842
1843 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1844 }
1845
1846 return max_xfer_rate;
1847 }
1848
1849 /**
1850 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1851 * @ioa_cfg: ioa config struct
1852 * @max_delay: max delay in micro-seconds to wait
1853 *
1854 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1855 *
1856 * Return value:
1857 * 0 on success / other on failure
1858 **/
1859 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1860 {
1861 volatile u32 pcii_reg;
1862 int delay = 1;
1863
1864 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1865 while (delay < max_delay) {
1866 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1867
1868 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1869 return 0;
1870
1871 /* udelay cannot be used if delay is more than a few milliseconds */
1872 if ((delay / 1000) > MAX_UDELAY_MS)
1873 mdelay(delay / 1000);
1874 else
1875 udelay(delay);
1876
1877 delay += delay;
1878 }
1879 return -EIO;
1880 }
1881
1882 /**
1883 * ipr_get_ldump_data_section - Dump IOA memory
1884 * @ioa_cfg: ioa config struct
1885 * @start_addr: adapter address to dump
1886 * @dest: destination kernel buffer
1887 * @length_in_words: length to dump in 4 byte words
1888 *
1889 * Return value:
1890 * 0 on success / -EIO on failure
1891 **/
1892 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1893 u32 start_addr,
1894 __be32 *dest, u32 length_in_words)
1895 {
1896 volatile u32 temp_pcii_reg;
1897 int i, delay = 0;
1898
1899 /* Write IOA interrupt reg starting LDUMP state */
1900 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1901 ioa_cfg->regs.set_uproc_interrupt_reg);
1902
1903 /* Wait for IO debug acknowledge */
1904 if (ipr_wait_iodbg_ack(ioa_cfg,
1905 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1906 dev_err(&ioa_cfg->pdev->dev,
1907 "IOA dump long data transfer timeout\n");
1908 return -EIO;
1909 }
1910
1911 /* Signal LDUMP interlocked - clear IO debug ack */
1912 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1913 ioa_cfg->regs.clr_interrupt_reg);
1914
1915 /* Write Mailbox with starting address */
1916 writel(start_addr, ioa_cfg->ioa_mailbox);
1917
1918 /* Signal address valid - clear IOA Reset alert */
1919 writel(IPR_UPROCI_RESET_ALERT,
1920 ioa_cfg->regs.clr_uproc_interrupt_reg);
1921
1922 for (i = 0; i < length_in_words; i++) {
1923 /* Wait for IO debug acknowledge */
1924 if (ipr_wait_iodbg_ack(ioa_cfg,
1925 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1926 dev_err(&ioa_cfg->pdev->dev,
1927 "IOA dump short data transfer timeout\n");
1928 return -EIO;
1929 }
1930
1931 /* Read data from mailbox and increment destination pointer */
1932 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1933 dest++;
1934
1935 /* For all but the last word of data, signal data received */
1936 if (i < (length_in_words - 1)) {
1937 /* Signal dump data received - Clear IO debug Ack */
1938 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1939 ioa_cfg->regs.clr_interrupt_reg);
1940 }
1941 }
1942
1943 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1944 writel(IPR_UPROCI_RESET_ALERT,
1945 ioa_cfg->regs.set_uproc_interrupt_reg);
1946
1947 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1948 ioa_cfg->regs.clr_uproc_interrupt_reg);
1949
1950 /* Signal dump data received - Clear IO debug Ack */
1951 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1952 ioa_cfg->regs.clr_interrupt_reg);
1953
1954 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1955 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1956 temp_pcii_reg =
1957 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1958
1959 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1960 return 0;
1961
1962 udelay(10);
1963 delay += 10;
1964 }
1965
1966 return 0;
1967 }
1968
1969 #ifdef CONFIG_SCSI_IPR_DUMP
1970 /**
1971 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1972 * @ioa_cfg: ioa config struct
1973 * @pci_address: adapter address
1974 * @length: length of data to copy
1975 *
1976 * Copy data from PCI adapter to kernel buffer.
1977 * Note: length MUST be a 4 byte multiple
1978 * Return value:
1979 * 0 on success / other on failure
1980 **/
1981 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1982 unsigned long pci_address, u32 length)
1983 {
1984 int bytes_copied = 0;
1985 int cur_len, rc, rem_len, rem_page_len;
1986 __be32 *page;
1987 unsigned long lock_flags = 0;
1988 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1989
1990 while (bytes_copied < length &&
1991 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1992 if (ioa_dump->page_offset >= PAGE_SIZE ||
1993 ioa_dump->page_offset == 0) {
1994 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1995
1996 if (!page) {
1997 ipr_trace;
1998 return bytes_copied;
1999 }
2000
2001 ioa_dump->page_offset = 0;
2002 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2003 ioa_dump->next_page_index++;
2004 } else
2005 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2006
2007 rem_len = length - bytes_copied;
2008 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2009 cur_len = min(rem_len, rem_page_len);
2010
2011 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2012 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2013 rc = -EIO;
2014 } else {
2015 rc = ipr_get_ldump_data_section(ioa_cfg,
2016 pci_address + bytes_copied,
2017 &page[ioa_dump->page_offset / 4],
2018 (cur_len / sizeof(u32)));
2019 }
2020 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2021
2022 if (!rc) {
2023 ioa_dump->page_offset += cur_len;
2024 bytes_copied += cur_len;
2025 } else {
2026 ipr_trace;
2027 break;
2028 }
2029 schedule();
2030 }
2031
2032 return bytes_copied;
2033 }
2034
2035 /**
2036 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2037 * @hdr: dump entry header struct
2038 *
2039 * Return value:
2040 * nothing
2041 **/
2042 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2043 {
2044 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2045 hdr->num_elems = 1;
2046 hdr->offset = sizeof(*hdr);
2047 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2048 }
2049
2050 /**
2051 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2052 * @ioa_cfg: ioa config struct
2053 * @driver_dump: driver dump struct
2054 *
2055 * Return value:
2056 * nothing
2057 **/
2058 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2059 struct ipr_driver_dump *driver_dump)
2060 {
2061 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2062
2063 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2064 driver_dump->ioa_type_entry.hdr.len =
2065 sizeof(struct ipr_dump_ioa_type_entry) -
2066 sizeof(struct ipr_dump_entry_header);
2067 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2068 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2069 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2070 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2071 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2072 ucode_vpd->minor_release[1];
2073 driver_dump->hdr.num_entries++;
2074 }
2075
2076 /**
2077 * ipr_dump_version_data - Fill in the driver version in the dump.
2078 * @ioa_cfg: ioa config struct
2079 * @driver_dump: driver dump struct
2080 *
2081 * Return value:
2082 * nothing
2083 **/
2084 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2085 struct ipr_driver_dump *driver_dump)
2086 {
2087 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2088 driver_dump->version_entry.hdr.len =
2089 sizeof(struct ipr_dump_version_entry) -
2090 sizeof(struct ipr_dump_entry_header);
2091 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2092 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2093 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2094 driver_dump->hdr.num_entries++;
2095 }
2096
2097 /**
2098 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2099 * @ioa_cfg: ioa config struct
2100 * @driver_dump: driver dump struct
2101 *
2102 * Return value:
2103 * nothing
2104 **/
2105 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2106 struct ipr_driver_dump *driver_dump)
2107 {
2108 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2109 driver_dump->trace_entry.hdr.len =
2110 sizeof(struct ipr_dump_trace_entry) -
2111 sizeof(struct ipr_dump_entry_header);
2112 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2113 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2114 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2115 driver_dump->hdr.num_entries++;
2116 }
2117
2118 /**
2119 * ipr_dump_location_data - Fill in the IOA location in the dump.
2120 * @ioa_cfg: ioa config struct
2121 * @driver_dump: driver dump struct
2122 *
2123 * Return value:
2124 * nothing
2125 **/
2126 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2127 struct ipr_driver_dump *driver_dump)
2128 {
2129 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2130 driver_dump->location_entry.hdr.len =
2131 sizeof(struct ipr_dump_location_entry) -
2132 sizeof(struct ipr_dump_entry_header);
2133 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2134 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2135 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
2136 driver_dump->hdr.num_entries++;
2137 }
2138
2139 /**
2140 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2141 * @ioa_cfg: ioa config struct
2142 * @dump: dump struct
2143 *
2144 * Return value:
2145 * nothing
2146 **/
2147 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2148 {
2149 unsigned long start_addr, sdt_word;
2150 unsigned long lock_flags = 0;
2151 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2152 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2153 u32 num_entries, start_off, end_off;
2154 u32 bytes_to_copy, bytes_copied, rc;
2155 struct ipr_sdt *sdt;
2156 int i;
2157
2158 ENTER;
2159
2160 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2161
2162 if (ioa_cfg->sdt_state != GET_DUMP) {
2163 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2164 return;
2165 }
2166
2167 start_addr = readl(ioa_cfg->ioa_mailbox);
2168
2169 if (!ipr_sdt_is_fmt2(start_addr)) {
2170 dev_err(&ioa_cfg->pdev->dev,
2171 "Invalid dump table format: %lx\n", start_addr);
2172 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2173 return;
2174 }
2175
2176 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2177
2178 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2179
2180 /* Initialize the overall dump header */
2181 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2182 driver_dump->hdr.num_entries = 1;
2183 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2184 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
2185 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
2186 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
2187
2188 ipr_dump_version_data(ioa_cfg, driver_dump);
2189 ipr_dump_location_data(ioa_cfg, driver_dump);
2190 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
2191 ipr_dump_trace_data(ioa_cfg, driver_dump);
2192
2193 /* Update dump_header */
2194 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
2195
2196 /* IOA Dump entry */
2197 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
2198 ioa_dump->format = IPR_SDT_FMT2;
2199 ioa_dump->hdr.len = 0;
2200 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2201 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
2202
2203 /* First entries in sdt are actually a list of dump addresses and
2204 lengths to gather the real dump data. sdt represents the pointer
2205 to the ioa generated dump table. Dump data will be extracted based
2206 on entries in this table */
2207 sdt = &ioa_dump->sdt;
2208
2209 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
2210 sizeof(struct ipr_sdt) / sizeof(__be32));
2211
2212 /* Smart Dump table is ready to use and the first entry is valid */
2213 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
2214 dev_err(&ioa_cfg->pdev->dev,
2215 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
2216 rc, be32_to_cpu(sdt->hdr.state));
2217 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
2218 ioa_cfg->sdt_state = DUMP_OBTAINED;
2219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2220 return;
2221 }
2222
2223 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
2224
2225 if (num_entries > IPR_NUM_SDT_ENTRIES)
2226 num_entries = IPR_NUM_SDT_ENTRIES;
2227
2228 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2229
2230 for (i = 0; i < num_entries; i++) {
2231 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
2232 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2233 break;
2234 }
2235
2236 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
2237 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
2238 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
2239 end_off = be32_to_cpu(sdt->entry[i].end_offset);
2240
2241 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
2242 bytes_to_copy = end_off - start_off;
2243 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
2244 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
2245 continue;
2246 }
2247
2248 /* Copy data from adapter to driver buffers */
2249 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
2250 bytes_to_copy);
2251
2252 ioa_dump->hdr.len += bytes_copied;
2253
2254 if (bytes_copied != bytes_to_copy) {
2255 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
2256 break;
2257 }
2258 }
2259 }
2260 }
2261
2262 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
2263
2264 /* Update dump_header */
2265 driver_dump->hdr.len += ioa_dump->hdr.len;
2266 wmb();
2267 ioa_cfg->sdt_state = DUMP_OBTAINED;
2268 LEAVE;
2269 }
2270
2271 #else
2272 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
2273 #endif
2274
2275 /**
2276 * ipr_release_dump - Free adapter dump memory
2277 * @kref: kref struct
2278 *
2279 * Return value:
2280 * nothing
2281 **/
2282 static void ipr_release_dump(struct kref *kref)
2283 {
2284 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
2285 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
2286 unsigned long lock_flags = 0;
2287 int i;
2288
2289 ENTER;
2290 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2291 ioa_cfg->dump = NULL;
2292 ioa_cfg->sdt_state = INACTIVE;
2293 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2294
2295 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
2296 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
2297
2298 kfree(dump);
2299 LEAVE;
2300 }
2301
2302 /**
2303 * ipr_worker_thread - Worker thread
2304 * @work: ioa config struct
2305 *
2306 * Called at task level from a work thread. This function takes care
2307 * of adding and removing device from the mid-layer as configuration
2308 * changes are detected by the adapter.
2309 *
2310 * Return value:
2311 * nothing
2312 **/
2313 static void ipr_worker_thread(struct work_struct *work)
2314 {
2315 unsigned long lock_flags;
2316 struct ipr_resource_entry *res;
2317 struct scsi_device *sdev;
2318 struct ipr_dump *dump;
2319 struct ipr_ioa_cfg *ioa_cfg =
2320 container_of(work, struct ipr_ioa_cfg, work_q);
2321 u8 bus, target, lun;
2322 int did_work;
2323
2324 ENTER;
2325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2326
2327 if (ioa_cfg->sdt_state == GET_DUMP) {
2328 dump = ioa_cfg->dump;
2329 if (!dump) {
2330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2331 return;
2332 }
2333 kref_get(&dump->kref);
2334 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2335 ipr_get_ioa_dump(ioa_cfg, dump);
2336 kref_put(&dump->kref, ipr_release_dump);
2337
2338 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2339 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
2340 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2342 return;
2343 }
2344
2345 restart:
2346 do {
2347 did_work = 0;
2348 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
2349 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2350 return;
2351 }
2352
2353 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2354 if (res->del_from_ml && res->sdev) {
2355 did_work = 1;
2356 sdev = res->sdev;
2357 if (!scsi_device_get(sdev)) {
2358 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
2359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2360 scsi_remove_device(sdev);
2361 scsi_device_put(sdev);
2362 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2363 }
2364 break;
2365 }
2366 }
2367 } while(did_work);
2368
2369 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2370 if (res->add_to_ml) {
2371 bus = res->cfgte.res_addr.bus;
2372 target = res->cfgte.res_addr.target;
2373 lun = res->cfgte.res_addr.lun;
2374 res->add_to_ml = 0;
2375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2376 scsi_add_device(ioa_cfg->host, bus, target, lun);
2377 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2378 goto restart;
2379 }
2380 }
2381
2382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2383 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE);
2384 LEAVE;
2385 }
2386
2387 #ifdef CONFIG_SCSI_IPR_TRACE
2388 /**
2389 * ipr_read_trace - Dump the adapter trace
2390 * @kobj: kobject struct
2391 * @buf: buffer
2392 * @off: offset
2393 * @count: buffer size
2394 *
2395 * Return value:
2396 * number of bytes printed to buffer
2397 **/
2398 static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
2399 loff_t off, size_t count)
2400 {
2401 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2402 struct Scsi_Host *shost = class_to_shost(cdev);
2403 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2404 unsigned long lock_flags = 0;
2405 int size = IPR_TRACE_SIZE;
2406 char *src = (char *)ioa_cfg->trace;
2407
2408 if (off > size)
2409 return 0;
2410 if (off + count > size) {
2411 size -= off;
2412 count = size;
2413 }
2414
2415 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2416 memcpy(buf, &src[off], count);
2417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2418 return count;
2419 }
2420
2421 static struct bin_attribute ipr_trace_attr = {
2422 .attr = {
2423 .name = "trace",
2424 .mode = S_IRUGO,
2425 },
2426 .size = 0,
2427 .read = ipr_read_trace,
2428 };
2429 #endif
2430
2431 static const struct {
2432 enum ipr_cache_state state;
2433 char *name;
2434 } cache_state [] = {
2435 { CACHE_NONE, "none" },
2436 { CACHE_DISABLED, "disabled" },
2437 { CACHE_ENABLED, "enabled" }
2438 };
2439
2440 /**
2441 * ipr_show_write_caching - Show the write caching attribute
2442 * @class_dev: class device struct
2443 * @buf: buffer
2444 *
2445 * Return value:
2446 * number of bytes printed to buffer
2447 **/
2448 static ssize_t ipr_show_write_caching(struct class_device *class_dev, char *buf)
2449 {
2450 struct Scsi_Host *shost = class_to_shost(class_dev);
2451 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2452 unsigned long lock_flags = 0;
2453 int i, len = 0;
2454
2455 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2456 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2457 if (cache_state[i].state == ioa_cfg->cache_state) {
2458 len = snprintf(buf, PAGE_SIZE, "%s\n", cache_state[i].name);
2459 break;
2460 }
2461 }
2462 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2463 return len;
2464 }
2465
2466
2467 /**
2468 * ipr_store_write_caching - Enable/disable adapter write cache
2469 * @class_dev: class_device struct
2470 * @buf: buffer
2471 * @count: buffer size
2472 *
2473 * This function will enable/disable adapter write cache.
2474 *
2475 * Return value:
2476 * count on success / other on failure
2477 **/
2478 static ssize_t ipr_store_write_caching(struct class_device *class_dev,
2479 const char *buf, size_t count)
2480 {
2481 struct Scsi_Host *shost = class_to_shost(class_dev);
2482 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2483 unsigned long lock_flags = 0;
2484 enum ipr_cache_state new_state = CACHE_INVALID;
2485 int i;
2486
2487 if (!capable(CAP_SYS_ADMIN))
2488 return -EACCES;
2489 if (ioa_cfg->cache_state == CACHE_NONE)
2490 return -EINVAL;
2491
2492 for (i = 0; i < ARRAY_SIZE(cache_state); i++) {
2493 if (!strncmp(cache_state[i].name, buf, strlen(cache_state[i].name))) {
2494 new_state = cache_state[i].state;
2495 break;
2496 }
2497 }
2498
2499 if (new_state != CACHE_DISABLED && new_state != CACHE_ENABLED)
2500 return -EINVAL;
2501
2502 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2503 if (ioa_cfg->cache_state == new_state) {
2504 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2505 return count;
2506 }
2507
2508 ioa_cfg->cache_state = new_state;
2509 dev_info(&ioa_cfg->pdev->dev, "%s adapter write cache.\n",
2510 new_state == CACHE_ENABLED ? "Enabling" : "Disabling");
2511 if (!ioa_cfg->in_reset_reload)
2512 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2513 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2514 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2515
2516 return count;
2517 }
2518
2519 static struct class_device_attribute ipr_ioa_cache_attr = {
2520 .attr = {
2521 .name = "write_cache",
2522 .mode = S_IRUGO | S_IWUSR,
2523 },
2524 .show = ipr_show_write_caching,
2525 .store = ipr_store_write_caching
2526 };
2527
2528 /**
2529 * ipr_show_fw_version - Show the firmware version
2530 * @class_dev: class device struct
2531 * @buf: buffer
2532 *
2533 * Return value:
2534 * number of bytes printed to buffer
2535 **/
2536 static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
2537 {
2538 struct Scsi_Host *shost = class_to_shost(class_dev);
2539 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2540 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2541 unsigned long lock_flags = 0;
2542 int len;
2543
2544 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2545 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
2546 ucode_vpd->major_release, ucode_vpd->card_type,
2547 ucode_vpd->minor_release[0],
2548 ucode_vpd->minor_release[1]);
2549 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2550 return len;
2551 }
2552
2553 static struct class_device_attribute ipr_fw_version_attr = {
2554 .attr = {
2555 .name = "fw_version",
2556 .mode = S_IRUGO,
2557 },
2558 .show = ipr_show_fw_version,
2559 };
2560
2561 /**
2562 * ipr_show_log_level - Show the adapter's error logging level
2563 * @class_dev: class device struct
2564 * @buf: buffer
2565 *
2566 * Return value:
2567 * number of bytes printed to buffer
2568 **/
2569 static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2570 {
2571 struct Scsi_Host *shost = class_to_shost(class_dev);
2572 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2573 unsigned long lock_flags = 0;
2574 int len;
2575
2576 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2577 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2578 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2579 return len;
2580 }
2581
2582 /**
2583 * ipr_store_log_level - Change the adapter's error logging level
2584 * @class_dev: class device struct
2585 * @buf: buffer
2586 *
2587 * Return value:
2588 * number of bytes printed to buffer
2589 **/
2590 static ssize_t ipr_store_log_level(struct class_device *class_dev,
2591 const char *buf, size_t count)
2592 {
2593 struct Scsi_Host *shost = class_to_shost(class_dev);
2594 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2595 unsigned long lock_flags = 0;
2596
2597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2598 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2600 return strlen(buf);
2601 }
2602
2603 static struct class_device_attribute ipr_log_level_attr = {
2604 .attr = {
2605 .name = "log_level",
2606 .mode = S_IRUGO | S_IWUSR,
2607 },
2608 .show = ipr_show_log_level,
2609 .store = ipr_store_log_level
2610 };
2611
2612 /**
2613 * ipr_store_diagnostics - IOA Diagnostics interface
2614 * @class_dev: class_device struct
2615 * @buf: buffer
2616 * @count: buffer size
2617 *
2618 * This function will reset the adapter and wait a reasonable
2619 * amount of time for any errors that the adapter might log.
2620 *
2621 * Return value:
2622 * count on success / other on failure
2623 **/
2624 static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2625 const char *buf, size_t count)
2626 {
2627 struct Scsi_Host *shost = class_to_shost(class_dev);
2628 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2629 unsigned long lock_flags = 0;
2630 int rc = count;
2631
2632 if (!capable(CAP_SYS_ADMIN))
2633 return -EACCES;
2634
2635 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2636 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2637 ioa_cfg->errors_logged = 0;
2638 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2639
2640 if (ioa_cfg->in_reset_reload) {
2641 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2642 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2643
2644 /* Wait for a second for any errors to be logged */
2645 msleep(1000);
2646 } else {
2647 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2648 return -EIO;
2649 }
2650
2651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2652 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2653 rc = -EIO;
2654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2655
2656 return rc;
2657 }
2658
2659 static struct class_device_attribute ipr_diagnostics_attr = {
2660 .attr = {
2661 .name = "run_diagnostics",
2662 .mode = S_IWUSR,
2663 },
2664 .store = ipr_store_diagnostics
2665 };
2666
2667 /**
2668 * ipr_show_adapter_state - Show the adapter's state
2669 * @class_dev: class device struct
2670 * @buf: buffer
2671 *
2672 * Return value:
2673 * number of bytes printed to buffer
2674 **/
2675 static ssize_t ipr_show_adapter_state(struct class_device *class_dev, char *buf)
2676 {
2677 struct Scsi_Host *shost = class_to_shost(class_dev);
2678 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2679 unsigned long lock_flags = 0;
2680 int len;
2681
2682 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2683 if (ioa_cfg->ioa_is_dead)
2684 len = snprintf(buf, PAGE_SIZE, "offline\n");
2685 else
2686 len = snprintf(buf, PAGE_SIZE, "online\n");
2687 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2688 return len;
2689 }
2690
2691 /**
2692 * ipr_store_adapter_state - Change adapter state
2693 * @class_dev: class_device struct
2694 * @buf: buffer
2695 * @count: buffer size
2696 *
2697 * This function will change the adapter's state.
2698 *
2699 * Return value:
2700 * count on success / other on failure
2701 **/
2702 static ssize_t ipr_store_adapter_state(struct class_device *class_dev,
2703 const char *buf, size_t count)
2704 {
2705 struct Scsi_Host *shost = class_to_shost(class_dev);
2706 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2707 unsigned long lock_flags;
2708 int result = count;
2709
2710 if (!capable(CAP_SYS_ADMIN))
2711 return -EACCES;
2712
2713 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2714 if (ioa_cfg->ioa_is_dead && !strncmp(buf, "online", 6)) {
2715 ioa_cfg->ioa_is_dead = 0;
2716 ioa_cfg->reset_retries = 0;
2717 ioa_cfg->in_ioa_bringdown = 0;
2718 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2719 }
2720 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2721 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2722
2723 return result;
2724 }
2725
2726 static struct class_device_attribute ipr_ioa_state_attr = {
2727 .attr = {
2728 .name = "state",
2729 .mode = S_IRUGO | S_IWUSR,
2730 },
2731 .show = ipr_show_adapter_state,
2732 .store = ipr_store_adapter_state
2733 };
2734
2735 /**
2736 * ipr_store_reset_adapter - Reset the adapter
2737 * @class_dev: class_device struct
2738 * @buf: buffer
2739 * @count: buffer size
2740 *
2741 * This function will reset the adapter.
2742 *
2743 * Return value:
2744 * count on success / other on failure
2745 **/
2746 static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2747 const char *buf, size_t count)
2748 {
2749 struct Scsi_Host *shost = class_to_shost(class_dev);
2750 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2751 unsigned long lock_flags;
2752 int result = count;
2753
2754 if (!capable(CAP_SYS_ADMIN))
2755 return -EACCES;
2756
2757 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2758 if (!ioa_cfg->in_reset_reload)
2759 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2760 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2761 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2762
2763 return result;
2764 }
2765
2766 static struct class_device_attribute ipr_ioa_reset_attr = {
2767 .attr = {
2768 .name = "reset_host",
2769 .mode = S_IWUSR,
2770 },
2771 .store = ipr_store_reset_adapter
2772 };
2773
2774 /**
2775 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2776 * @buf_len: buffer length
2777 *
2778 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2779 * list to use for microcode download
2780 *
2781 * Return value:
2782 * pointer to sglist / NULL on failure
2783 **/
2784 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2785 {
2786 int sg_size, order, bsize_elem, num_elem, i, j;
2787 struct ipr_sglist *sglist;
2788 struct scatterlist *scatterlist;
2789 struct page *page;
2790
2791 /* Get the minimum size per scatter/gather element */
2792 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2793
2794 /* Get the actual size per element */
2795 order = get_order(sg_size);
2796
2797 /* Determine the actual number of bytes per element */
2798 bsize_elem = PAGE_SIZE * (1 << order);
2799
2800 /* Determine the actual number of sg entries needed */
2801 if (buf_len % bsize_elem)
2802 num_elem = (buf_len / bsize_elem) + 1;
2803 else
2804 num_elem = buf_len / bsize_elem;
2805
2806 /* Allocate a scatter/gather list for the DMA */
2807 sglist = kzalloc(sizeof(struct ipr_sglist) +
2808 (sizeof(struct scatterlist) * (num_elem - 1)),
2809 GFP_KERNEL);
2810
2811 if (sglist == NULL) {
2812 ipr_trace;
2813 return NULL;
2814 }
2815
2816 scatterlist = sglist->scatterlist;
2817
2818 sglist->order = order;
2819 sglist->num_sg = num_elem;
2820
2821 /* Allocate a bunch of sg elements */
2822 for (i = 0; i < num_elem; i++) {
2823 page = alloc_pages(GFP_KERNEL, order);
2824 if (!page) {
2825 ipr_trace;
2826
2827 /* Free up what we already allocated */
2828 for (j = i - 1; j >= 0; j--)
2829 __free_pages(scatterlist[j].page, order);
2830 kfree(sglist);
2831 return NULL;
2832 }
2833
2834 scatterlist[i].page = page;
2835 }
2836
2837 return sglist;
2838 }
2839
2840 /**
2841 * ipr_free_ucode_buffer - Frees a microcode download buffer
2842 * @p_dnld: scatter/gather list pointer
2843 *
2844 * Free a DMA'able ucode download buffer previously allocated with
2845 * ipr_alloc_ucode_buffer
2846 *
2847 * Return value:
2848 * nothing
2849 **/
2850 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2851 {
2852 int i;
2853
2854 for (i = 0; i < sglist->num_sg; i++)
2855 __free_pages(sglist->scatterlist[i].page, sglist->order);
2856
2857 kfree(sglist);
2858 }
2859
2860 /**
2861 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2862 * @sglist: scatter/gather list pointer
2863 * @buffer: buffer pointer
2864 * @len: buffer length
2865 *
2866 * Copy a microcode image from a user buffer into a buffer allocated by
2867 * ipr_alloc_ucode_buffer
2868 *
2869 * Return value:
2870 * 0 on success / other on failure
2871 **/
2872 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2873 u8 *buffer, u32 len)
2874 {
2875 int bsize_elem, i, result = 0;
2876 struct scatterlist *scatterlist;
2877 void *kaddr;
2878
2879 /* Determine the actual number of bytes per element */
2880 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2881
2882 scatterlist = sglist->scatterlist;
2883
2884 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2885 kaddr = kmap(scatterlist[i].page);
2886 memcpy(kaddr, buffer, bsize_elem);
2887 kunmap(scatterlist[i].page);
2888
2889 scatterlist[i].length = bsize_elem;
2890
2891 if (result != 0) {
2892 ipr_trace;
2893 return result;
2894 }
2895 }
2896
2897 if (len % bsize_elem) {
2898 kaddr = kmap(scatterlist[i].page);
2899 memcpy(kaddr, buffer, len % bsize_elem);
2900 kunmap(scatterlist[i].page);
2901
2902 scatterlist[i].length = len % bsize_elem;
2903 }
2904
2905 sglist->buffer_len = len;
2906 return result;
2907 }
2908
2909 /**
2910 * ipr_build_ucode_ioadl - Build a microcode download IOADL
2911 * @ipr_cmd: ipr command struct
2912 * @sglist: scatter/gather list
2913 *
2914 * Builds a microcode download IOA data list (IOADL).
2915 *
2916 **/
2917 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
2918 struct ipr_sglist *sglist)
2919 {
2920 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2921 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2922 struct scatterlist *scatterlist = sglist->scatterlist;
2923 int i;
2924
2925 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
2926 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2927 ioarcb->write_data_transfer_length = cpu_to_be32(sglist->buffer_len);
2928 ioarcb->write_ioadl_len =
2929 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2930
2931 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2932 ioadl[i].flags_and_data_len =
2933 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2934 ioadl[i].address =
2935 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2936 }
2937
2938 ioadl[i-1].flags_and_data_len |=
2939 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2940 }
2941
2942 /**
2943 * ipr_update_ioa_ucode - Update IOA's microcode
2944 * @ioa_cfg: ioa config struct
2945 * @sglist: scatter/gather list
2946 *
2947 * Initiate an adapter reset to update the IOA's microcode
2948 *
2949 * Return value:
2950 * 0 on success / -EIO on failure
2951 **/
2952 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
2953 struct ipr_sglist *sglist)
2954 {
2955 unsigned long lock_flags;
2956
2957 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2958
2959 if (ioa_cfg->ucode_sglist) {
2960 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2961 dev_err(&ioa_cfg->pdev->dev,
2962 "Microcode download already in progress\n");
2963 return -EIO;
2964 }
2965
2966 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
2967 sglist->num_sg, DMA_TO_DEVICE);
2968
2969 if (!sglist->num_dma_sg) {
2970 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2971 dev_err(&ioa_cfg->pdev->dev,
2972 "Failed to map microcode download buffer!\n");
2973 return -EIO;
2974 }
2975
2976 ioa_cfg->ucode_sglist = sglist;
2977 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2978 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2979 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2980
2981 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2982 ioa_cfg->ucode_sglist = NULL;
2983 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2984 return 0;
2985 }
2986
2987 /**
2988 * ipr_store_update_fw - Update the firmware on the adapter
2989 * @class_dev: class_device struct
2990 * @buf: buffer
2991 * @count: buffer size
2992 *
2993 * This function will update the firmware on the adapter.
2994 *
2995 * Return value:
2996 * count on success / other on failure
2997 **/
2998 static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2999 const char *buf, size_t count)
3000 {
3001 struct Scsi_Host *shost = class_to_shost(class_dev);
3002 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3003 struct ipr_ucode_image_header *image_hdr;
3004 const struct firmware *fw_entry;
3005 struct ipr_sglist *sglist;
3006 char fname[100];
3007 char *src;
3008 int len, result, dnld_size;
3009
3010 if (!capable(CAP_SYS_ADMIN))
3011 return -EACCES;
3012
3013 len = snprintf(fname, 99, "%s", buf);
3014 fname[len-1] = '\0';
3015
3016 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3017 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3018 return -EIO;
3019 }
3020
3021 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3022
3023 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
3024 (ioa_cfg->vpd_cbs->page3_data.card_type &&
3025 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
3026 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
3027 release_firmware(fw_entry);
3028 return -EINVAL;
3029 }
3030
3031 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3032 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3033 sglist = ipr_alloc_ucode_buffer(dnld_size);
3034
3035 if (!sglist) {
3036 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3037 release_firmware(fw_entry);
3038 return -ENOMEM;
3039 }
3040
3041 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3042
3043 if (result) {
3044 dev_err(&ioa_cfg->pdev->dev,
3045 "Microcode buffer copy to DMA buffer failed\n");
3046 goto out;
3047 }
3048
3049 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3050
3051 if (!result)
3052 result = count;
3053 out:
3054 ipr_free_ucode_buffer(sglist);
3055 release_firmware(fw_entry);
3056 return result;
3057 }
3058
3059 static struct class_device_attribute ipr_update_fw_attr = {
3060 .attr = {
3061 .name = "update_fw",
3062 .mode = S_IWUSR,
3063 },
3064 .store = ipr_store_update_fw
3065 };
3066
3067 static struct class_device_attribute *ipr_ioa_attrs[] = {
3068 &ipr_fw_version_attr,
3069 &ipr_log_level_attr,
3070 &ipr_diagnostics_attr,
3071 &ipr_ioa_state_attr,
3072 &ipr_ioa_reset_attr,
3073 &ipr_update_fw_attr,
3074 &ipr_ioa_cache_attr,
3075 NULL,
3076 };
3077
3078 #ifdef CONFIG_SCSI_IPR_DUMP
3079 /**
3080 * ipr_read_dump - Dump the adapter
3081 * @kobj: kobject struct
3082 * @buf: buffer
3083 * @off: offset
3084 * @count: buffer size
3085 *
3086 * Return value:
3087 * number of bytes printed to buffer
3088 **/
3089 static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
3090 loff_t off, size_t count)
3091 {
3092 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3093 struct Scsi_Host *shost = class_to_shost(cdev);
3094 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3095 struct ipr_dump *dump;
3096 unsigned long lock_flags = 0;
3097 char *src;
3098 int len;
3099 size_t rc = count;
3100
3101 if (!capable(CAP_SYS_ADMIN))
3102 return -EACCES;
3103
3104 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3105 dump = ioa_cfg->dump;
3106
3107 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
3108 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3109 return 0;
3110 }
3111 kref_get(&dump->kref);
3112 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3113
3114 if (off > dump->driver_dump.hdr.len) {
3115 kref_put(&dump->kref, ipr_release_dump);
3116 return 0;
3117 }
3118
3119 if (off + count > dump->driver_dump.hdr.len) {
3120 count = dump->driver_dump.hdr.len - off;
3121 rc = count;
3122 }
3123
3124 if (count && off < sizeof(dump->driver_dump)) {
3125 if (off + count > sizeof(dump->driver_dump))
3126 len = sizeof(dump->driver_dump) - off;
3127 else
3128 len = count;
3129 src = (u8 *)&dump->driver_dump + off;
3130 memcpy(buf, src, len);
3131 buf += len;
3132 off += len;
3133 count -= len;
3134 }
3135
3136 off -= sizeof(dump->driver_dump);
3137
3138 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
3139 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
3140 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
3141 else
3142 len = count;
3143 src = (u8 *)&dump->ioa_dump + off;
3144 memcpy(buf, src, len);
3145 buf += len;
3146 off += len;
3147 count -= len;
3148 }
3149
3150 off -= offsetof(struct ipr_ioa_dump, ioa_data);
3151
3152 while (count) {
3153 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
3154 len = PAGE_ALIGN(off) - off;
3155 else
3156 len = count;
3157 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
3158 src += off & ~PAGE_MASK;
3159 memcpy(buf, src, len);
3160 buf += len;
3161 off += len;
3162 count -= len;
3163 }
3164
3165 kref_put(&dump->kref, ipr_release_dump);
3166 return rc;
3167 }
3168
3169 /**
3170 * ipr_alloc_dump - Prepare for adapter dump
3171 * @ioa_cfg: ioa config struct
3172 *
3173 * Return value:
3174 * 0 on success / other on failure
3175 **/
3176 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
3177 {
3178 struct ipr_dump *dump;
3179 unsigned long lock_flags = 0;
3180
3181 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
3182
3183 if (!dump) {
3184 ipr_err("Dump memory allocation failed\n");
3185 return -ENOMEM;
3186 }
3187
3188 kref_init(&dump->kref);
3189 dump->ioa_cfg = ioa_cfg;
3190
3191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3192
3193 if (INACTIVE != ioa_cfg->sdt_state) {
3194 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3195 kfree(dump);
3196 return 0;
3197 }
3198
3199 ioa_cfg->dump = dump;
3200 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
3201 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
3202 ioa_cfg->dump_taken = 1;
3203 schedule_work(&ioa_cfg->work_q);
3204 }
3205 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3206
3207 return 0;
3208 }
3209
3210 /**
3211 * ipr_free_dump - Free adapter dump memory
3212 * @ioa_cfg: ioa config struct
3213 *
3214 * Return value:
3215 * 0 on success / other on failure
3216 **/
3217 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
3218 {
3219 struct ipr_dump *dump;
3220 unsigned long lock_flags = 0;
3221
3222 ENTER;
3223
3224 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3225 dump = ioa_cfg->dump;
3226 if (!dump) {
3227 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3228 return 0;
3229 }
3230
3231 ioa_cfg->dump = NULL;
3232 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3233
3234 kref_put(&dump->kref, ipr_release_dump);
3235
3236 LEAVE;
3237 return 0;
3238 }
3239
3240 /**
3241 * ipr_write_dump - Setup dump state of adapter
3242 * @kobj: kobject struct
3243 * @buf: buffer
3244 * @off: offset
3245 * @count: buffer size
3246 *
3247 * Return value:
3248 * number of bytes printed to buffer
3249 **/
3250 static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
3251 loff_t off, size_t count)
3252 {
3253 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
3254 struct Scsi_Host *shost = class_to_shost(cdev);
3255 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3256 int rc;
3257
3258 if (!capable(CAP_SYS_ADMIN))
3259 return -EACCES;
3260
3261 if (buf[0] == '1')
3262 rc = ipr_alloc_dump(ioa_cfg);
3263 else if (buf[0] == '0')
3264 rc = ipr_free_dump(ioa_cfg);
3265 else
3266 return -EINVAL;
3267
3268 if (rc)
3269 return rc;
3270 else
3271 return count;
3272 }
3273
3274 static struct bin_attribute ipr_dump_attr = {
3275 .attr = {
3276 .name = "dump",
3277 .mode = S_IRUSR | S_IWUSR,
3278 },
3279 .size = 0,
3280 .read = ipr_read_dump,
3281 .write = ipr_write_dump
3282 };
3283 #else
3284 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
3285 #endif
3286
3287 /**
3288 * ipr_change_queue_depth - Change the device's queue depth
3289 * @sdev: scsi device struct
3290 * @qdepth: depth to set
3291 *
3292 * Return value:
3293 * actual depth set
3294 **/
3295 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
3296 {
3297 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3298 struct ipr_resource_entry *res;
3299 unsigned long lock_flags = 0;
3300
3301 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3302 res = (struct ipr_resource_entry *)sdev->hostdata;
3303
3304 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
3305 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
3306 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3307
3308 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
3309 return sdev->queue_depth;
3310 }
3311
3312 /**
3313 * ipr_change_queue_type - Change the device's queue type
3314 * @dsev: scsi device struct
3315 * @tag_type: type of tags to use
3316 *
3317 * Return value:
3318 * actual queue type set
3319 **/
3320 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
3321 {
3322 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3323 struct ipr_resource_entry *res;
3324 unsigned long lock_flags = 0;
3325
3326 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3327 res = (struct ipr_resource_entry *)sdev->hostdata;
3328
3329 if (res) {
3330 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
3331 /*
3332 * We don't bother quiescing the device here since the
3333 * adapter firmware does it for us.
3334 */
3335 scsi_set_tag_type(sdev, tag_type);
3336
3337 if (tag_type)
3338 scsi_activate_tcq(sdev, sdev->queue_depth);
3339 else
3340 scsi_deactivate_tcq(sdev, sdev->queue_depth);
3341 } else
3342 tag_type = 0;
3343 } else
3344 tag_type = 0;
3345
3346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3347 return tag_type;
3348 }
3349
3350 /**
3351 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
3352 * @dev: device struct
3353 * @buf: buffer
3354 *
3355 * Return value:
3356 * number of bytes printed to buffer
3357 **/
3358 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
3359 {
3360 struct scsi_device *sdev = to_scsi_device(dev);
3361 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
3362 struct ipr_resource_entry *res;
3363 unsigned long lock_flags = 0;
3364 ssize_t len = -ENXIO;
3365
3366 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3367 res = (struct ipr_resource_entry *)sdev->hostdata;
3368 if (res)
3369 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
3370 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3371 return len;
3372 }
3373
3374 static struct device_attribute ipr_adapter_handle_attr = {
3375 .attr = {
3376 .name = "adapter_handle",
3377 .mode = S_IRUSR,
3378 },
3379 .show = ipr_show_adapter_handle
3380 };
3381
3382 static struct device_attribute *ipr_dev_attrs[] = {
3383 &ipr_adapter_handle_attr,
3384 NULL,
3385 };
3386
3387 /**
3388 * ipr_biosparam - Return the HSC mapping
3389 * @sdev: scsi device struct
3390 * @block_device: block device pointer
3391 * @capacity: capacity of the device
3392 * @parm: Array containing returned HSC values.
3393 *
3394 * This function generates the HSC parms that fdisk uses.
3395 * We want to make sure we return something that places partitions
3396 * on 4k boundaries for best performance with the IOA.
3397 *
3398 * Return value:
3399 * 0 on success
3400 **/
3401 static int ipr_biosparam(struct scsi_device *sdev,
3402 struct block_device *block_device,
3403 sector_t capacity, int *parm)
3404 {
3405 int heads, sectors;
3406 sector_t cylinders;
3407
3408 heads = 128;
3409 sectors = 32;
3410
3411 cylinders = capacity;
3412 sector_div(cylinders, (128 * 32));
3413
3414 /* return result */
3415 parm[0] = heads;
3416 parm[1] = sectors;
3417 parm[2] = cylinders;
3418
3419 return 0;
3420 }
3421
3422 /**
3423 * ipr_find_starget - Find target based on bus/target.
3424 * @starget: scsi target struct
3425 *
3426 * Return value:
3427 * resource entry pointer if found / NULL if not found
3428 **/
3429 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
3430 {
3431 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3432 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3433 struct ipr_resource_entry *res;
3434
3435 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3436 if ((res->cfgte.res_addr.bus == starget->channel) &&
3437 (res->cfgte.res_addr.target == starget->id) &&
3438 (res->cfgte.res_addr.lun == 0)) {
3439 return res;
3440 }
3441 }
3442
3443 return NULL;
3444 }
3445
3446 static struct ata_port_info sata_port_info;
3447
3448 /**
3449 * ipr_target_alloc - Prepare for commands to a SCSI target
3450 * @starget: scsi target struct
3451 *
3452 * If the device is a SATA device, this function allocates an
3453 * ATA port with libata, else it does nothing.
3454 *
3455 * Return value:
3456 * 0 on success / non-0 on failure
3457 **/
3458 static int ipr_target_alloc(struct scsi_target *starget)
3459 {
3460 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
3461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
3462 struct ipr_sata_port *sata_port;
3463 struct ata_port *ap;
3464 struct ipr_resource_entry *res;
3465 unsigned long lock_flags;
3466
3467 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3468 res = ipr_find_starget(starget);
3469 starget->hostdata = NULL;
3470
3471 if (res && ipr_is_gata(res)) {
3472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3473 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
3474 if (!sata_port)
3475 return -ENOMEM;
3476
3477 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
3478 if (ap) {
3479 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3480 sata_port->ioa_cfg = ioa_cfg;
3481 sata_port->ap = ap;
3482 sata_port->res = res;
3483
3484 res->sata_port = sata_port;
3485 ap->private_data = sata_port;
3486 starget->hostdata = sata_port;
3487 } else {
3488 kfree(sata_port);
3489 return -ENOMEM;
3490 }
3491 }
3492 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3493
3494 return 0;
3495 }
3496
3497 /**
3498 * ipr_target_destroy - Destroy a SCSI target
3499 * @starget: scsi target struct
3500 *
3501 * If the device was a SATA device, this function frees the libata
3502 * ATA port, else it does nothing.
3503 *
3504 **/
3505 static void ipr_target_destroy(struct scsi_target *starget)
3506 {
3507 struct ipr_sata_port *sata_port = starget->hostdata;
3508
3509 if (sata_port) {
3510 starget->hostdata = NULL;
3511 ata_sas_port_destroy(sata_port->ap);
3512 kfree(sata_port);
3513 }
3514 }
3515
3516 /**
3517 * ipr_find_sdev - Find device based on bus/target/lun.
3518 * @sdev: scsi device struct
3519 *
3520 * Return value:
3521 * resource entry pointer if found / NULL if not found
3522 **/
3523 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
3524 {
3525 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3526 struct ipr_resource_entry *res;
3527
3528 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3529 if ((res->cfgte.res_addr.bus == sdev->channel) &&
3530 (res->cfgte.res_addr.target == sdev->id) &&
3531 (res->cfgte.res_addr.lun == sdev->lun))
3532 return res;
3533 }
3534
3535 return NULL;
3536 }
3537
3538 /**
3539 * ipr_slave_destroy - Unconfigure a SCSI device
3540 * @sdev: scsi device struct
3541 *
3542 * Return value:
3543 * nothing
3544 **/
3545 static void ipr_slave_destroy(struct scsi_device *sdev)
3546 {
3547 struct ipr_resource_entry *res;
3548 struct ipr_ioa_cfg *ioa_cfg;
3549 unsigned long lock_flags = 0;
3550
3551 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3552
3553 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3554 res = (struct ipr_resource_entry *) sdev->hostdata;
3555 if (res) {
3556 if (res->sata_port)
3557 ata_port_disable(res->sata_port->ap);
3558 sdev->hostdata = NULL;
3559 res->sdev = NULL;
3560 res->sata_port = NULL;
3561 }
3562 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3563 }
3564
3565 /**
3566 * ipr_slave_configure - Configure a SCSI device
3567 * @sdev: scsi device struct
3568 *
3569 * This function configures the specified scsi device.
3570 *
3571 * Return value:
3572 * 0 on success
3573 **/
3574 static int ipr_slave_configure(struct scsi_device *sdev)
3575 {
3576 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3577 struct ipr_resource_entry *res;
3578 unsigned long lock_flags = 0;
3579
3580 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3581 res = sdev->hostdata;
3582 if (res) {
3583 if (ipr_is_af_dasd_device(res))
3584 sdev->type = TYPE_RAID;
3585 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
3586 sdev->scsi_level = 4;
3587 sdev->no_uld_attach = 1;
3588 }
3589 if (ipr_is_vset_device(res)) {
3590 sdev->timeout = IPR_VSET_RW_TIMEOUT;
3591 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
3592 }
3593 if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
3594 sdev->allow_restart = 1;
3595 if (ipr_is_gata(res) && res->sata_port) {
3596 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
3597 ata_sas_slave_configure(sdev, res->sata_port->ap);
3598 } else {
3599 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
3600 }
3601 }
3602 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3603 return 0;
3604 }
3605
3606 /**
3607 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
3608 * @sdev: scsi device struct
3609 *
3610 * This function initializes an ATA port so that future commands
3611 * sent through queuecommand will work.
3612 *
3613 * Return value:
3614 * 0 on success
3615 **/
3616 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
3617 {
3618 struct ipr_sata_port *sata_port = NULL;
3619 int rc = -ENXIO;
3620
3621 ENTER;
3622 if (sdev->sdev_target)
3623 sata_port = sdev->sdev_target->hostdata;
3624 if (sata_port)
3625 rc = ata_sas_port_init(sata_port->ap);
3626 if (rc)
3627 ipr_slave_destroy(sdev);
3628
3629 LEAVE;
3630 return rc;
3631 }
3632
3633 /**
3634 * ipr_slave_alloc - Prepare for commands to a device.
3635 * @sdev: scsi device struct
3636 *
3637 * This function saves a pointer to the resource entry
3638 * in the scsi device struct if the device exists. We
3639 * can then use this pointer in ipr_queuecommand when
3640 * handling new commands.
3641 *
3642 * Return value:
3643 * 0 on success / -ENXIO if device does not exist
3644 **/
3645 static int ipr_slave_alloc(struct scsi_device *sdev)
3646 {
3647 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
3648 struct ipr_resource_entry *res;
3649 unsigned long lock_flags;
3650 int rc = -ENXIO;
3651
3652 sdev->hostdata = NULL;
3653
3654 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3655
3656 res = ipr_find_sdev(sdev);
3657 if (res) {
3658 res->sdev = sdev;
3659 res->add_to_ml = 0;
3660 res->in_erp = 0;
3661 sdev->hostdata = res;
3662 if (!ipr_is_naca_model(res))
3663 res->needs_sync_complete = 1;
3664 rc = 0;
3665 if (ipr_is_gata(res)) {
3666 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3667 return ipr_ata_slave_alloc(sdev);
3668 }
3669 }
3670
3671 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3672
3673 return rc;
3674 }
3675
3676 /**
3677 * ipr_eh_host_reset - Reset the host adapter
3678 * @scsi_cmd: scsi command struct
3679 *
3680 * Return value:
3681 * SUCCESS / FAILED
3682 **/
3683 static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
3684 {
3685 struct ipr_ioa_cfg *ioa_cfg;
3686 int rc;
3687
3688 ENTER;
3689 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3690
3691 dev_err(&ioa_cfg->pdev->dev,
3692 "Adapter being reset as a result of error recovery.\n");
3693
3694 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3695 ioa_cfg->sdt_state = GET_DUMP;
3696
3697 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
3698
3699 LEAVE;
3700 return rc;
3701 }
3702
3703 static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
3704 {
3705 int rc;
3706
3707 spin_lock_irq(cmd->device->host->host_lock);
3708 rc = __ipr_eh_host_reset(cmd);
3709 spin_unlock_irq(cmd->device->host->host_lock);
3710
3711 return rc;
3712 }
3713
3714 /**
3715 * ipr_device_reset - Reset the device
3716 * @ioa_cfg: ioa config struct
3717 * @res: resource entry struct
3718 *
3719 * This function issues a device reset to the affected device.
3720 * If the device is a SCSI device, a LUN reset will be sent
3721 * to the device first. If that does not work, a target reset
3722 * will be sent. If the device is a SATA device, a PHY reset will
3723 * be sent.
3724 *
3725 * Return value:
3726 * 0 on success / non-zero on failure
3727 **/
3728 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
3729 struct ipr_resource_entry *res)
3730 {
3731 struct ipr_cmnd *ipr_cmd;
3732 struct ipr_ioarcb *ioarcb;
3733 struct ipr_cmd_pkt *cmd_pkt;
3734 struct ipr_ioarcb_ata_regs *regs;
3735 u32 ioasc;
3736
3737 ENTER;
3738 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3739 ioarcb = &ipr_cmd->ioarcb;
3740 cmd_pkt = &ioarcb->cmd_pkt;
3741 regs = &ioarcb->add_data.u.regs;
3742
3743 ioarcb->res_handle = res->cfgte.res_handle;
3744 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3745 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3746 if (ipr_is_gata(res)) {
3747 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
3748 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(regs->flags));
3749 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
3750 }
3751
3752 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3753 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3754 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3755 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET)
3756 memcpy(&res->sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
3757 sizeof(struct ipr_ioasa_gata));
3758
3759 LEAVE;
3760 return (IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0);
3761 }
3762
3763 /**
3764 * ipr_sata_reset - Reset the SATA port
3765 * @ap: SATA port to reset
3766 * @classes: class of the attached device
3767 *
3768 * This function issues a SATA phy reset to the affected ATA port.
3769 *
3770 * Return value:
3771 * 0 on success / non-zero on failure
3772 **/
3773 static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
3774 {
3775 struct ipr_sata_port *sata_port = ap->private_data;
3776 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
3777 struct ipr_resource_entry *res;
3778 unsigned long lock_flags = 0;
3779 int rc = -ENXIO;
3780
3781 ENTER;
3782 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3783 while(ioa_cfg->in_reset_reload) {
3784 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3785 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3786 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3787 }
3788
3789 res = sata_port->res;
3790 if (res) {
3791 rc = ipr_device_reset(ioa_cfg, res);
3792 switch(res->cfgte.proto) {
3793 case IPR_PROTO_SATA:
3794 case IPR_PROTO_SAS_STP:
3795 *classes = ATA_DEV_ATA;
3796 break;
3797 case IPR_PROTO_SATA_ATAPI:
3798 case IPR_PROTO_SAS_STP_ATAPI:
3799 *classes = ATA_DEV_ATAPI;
3800 break;
3801 default:
3802 *classes = ATA_DEV_UNKNOWN;
3803 break;
3804 };
3805 }
3806
3807 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3808 LEAVE;
3809 return rc;
3810 }
3811
3812 /**
3813 * ipr_eh_dev_reset - Reset the device
3814 * @scsi_cmd: scsi command struct
3815 *
3816 * This function issues a device reset to the affected device.
3817 * A LUN reset will be sent to the device first. If that does
3818 * not work, a target reset will be sent.
3819 *
3820 * Return value:
3821 * SUCCESS / FAILED
3822 **/
3823 static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
3824 {
3825 struct ipr_cmnd *ipr_cmd;
3826 struct ipr_ioa_cfg *ioa_cfg;
3827 struct ipr_resource_entry *res;
3828 struct ata_port *ap;
3829 int rc = 0;
3830
3831 ENTER;
3832 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
3833 res = scsi_cmd->device->hostdata;
3834
3835 if (!res)
3836 return FAILED;
3837
3838 /*
3839 * If we are currently going through reset/reload, return failed. This will force the
3840 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
3841 * reset to complete
3842 */
3843 if (ioa_cfg->in_reset_reload)
3844 return FAILED;
3845 if (ioa_cfg->ioa_is_dead)
3846 return FAILED;
3847
3848 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3849 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
3850 if (ipr_cmd->scsi_cmd)
3851 ipr_cmd->done = ipr_scsi_eh_done;
3852 if (ipr_cmd->qc && !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
3853 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
3854 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
3855 }
3856 }
3857 }
3858
3859 res->resetting_device = 1;
3860 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
3861
3862 if (ipr_is_gata(res) && res->sata_port) {
3863 ap = res->sata_port->ap;
3864 spin_unlock_irq(scsi_cmd->device->host->host_lock);
3865 ata_do_eh(ap, NULL, NULL, ipr_sata_reset, NULL);
3866 spin_lock_irq(scsi_cmd->device->host->host_lock);
3867 } else
3868 rc = ipr_device_reset(ioa_cfg, res);
3869 res->resetting_device = 0;
3870
3871 LEAVE;
3872 return (rc ? FAILED : SUCCESS);
3873 }
3874
3875 static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
3876 {
3877 int rc;
3878
3879 spin_lock_irq(cmd->device->host->host_lock);
3880 rc = __ipr_eh_dev_reset(cmd);
3881 spin_unlock_irq(cmd->device->host->host_lock);
3882
3883 return rc;
3884 }
3885
3886 /**
3887 * ipr_bus_reset_done - Op done function for bus reset.
3888 * @ipr_cmd: ipr command struct
3889 *
3890 * This function is the op done function for a bus reset
3891 *
3892 * Return value:
3893 * none
3894 **/
3895 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3896 {
3897 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3898 struct ipr_resource_entry *res;
3899
3900 ENTER;
3901 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3902 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3903 sizeof(res->cfgte.res_handle))) {
3904 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3905 break;
3906 }
3907 }
3908
3909 /*
3910 * If abort has not completed, indicate the reset has, else call the
3911 * abort's done function to wake the sleeping eh thread
3912 */
3913 if (ipr_cmd->sibling->sibling)
3914 ipr_cmd->sibling->sibling = NULL;
3915 else
3916 ipr_cmd->sibling->done(ipr_cmd->sibling);
3917
3918 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3919 LEAVE;
3920 }
3921
3922 /**
3923 * ipr_abort_timeout - An abort task has timed out
3924 * @ipr_cmd: ipr command struct
3925 *
3926 * This function handles when an abort task times out. If this
3927 * happens we issue a bus reset since we have resources tied
3928 * up that must be freed before returning to the midlayer.
3929 *
3930 * Return value:
3931 * none
3932 **/
3933 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3934 {
3935 struct ipr_cmnd *reset_cmd;
3936 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3937 struct ipr_cmd_pkt *cmd_pkt;
3938 unsigned long lock_flags = 0;
3939
3940 ENTER;
3941 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3942 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3943 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3944 return;
3945 }
3946
3947 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
3948 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3949 ipr_cmd->sibling = reset_cmd;
3950 reset_cmd->sibling = ipr_cmd;
3951 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3952 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3953 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3954 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3955 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3956
3957 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3958 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3959 LEAVE;
3960 }
3961
3962 /**
3963 * ipr_cancel_op - Cancel specified op
3964 * @scsi_cmd: scsi command struct
3965 *
3966 * This function cancels specified op.
3967 *
3968 * Return value:
3969 * SUCCESS / FAILED
3970 **/
3971 static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3972 {
3973 struct ipr_cmnd *ipr_cmd;
3974 struct ipr_ioa_cfg *ioa_cfg;
3975 struct ipr_resource_entry *res;
3976 struct ipr_cmd_pkt *cmd_pkt;
3977 u32 ioasc;
3978 int op_found = 0;
3979
3980 ENTER;
3981 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3982 res = scsi_cmd->device->hostdata;
3983
3984 /* If we are currently going through reset/reload, return failed.
3985 * This will force the mid-layer to call ipr_eh_host_reset,
3986 * which will then go to sleep and wait for the reset to complete
3987 */
3988 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3989 return FAILED;
3990 if (!res || !ipr_is_gscsi(res))
3991 return FAILED;
3992
3993 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3994 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3995 ipr_cmd->done = ipr_scsi_eh_done;
3996 op_found = 1;
3997 break;
3998 }
3999 }
4000
4001 if (!op_found)
4002 return SUCCESS;
4003
4004 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4005 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
4006 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4007 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4008 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4009 ipr_cmd->u.sdev = scsi_cmd->device;
4010
4011 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
4012 scsi_cmd->cmnd[0]);
4013 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
4014 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4015
4016 /*
4017 * If the abort task timed out and we sent a bus reset, we will get
4018 * one the following responses to the abort
4019 */
4020 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
4021 ioasc = 0;
4022 ipr_trace;
4023 }
4024
4025 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4026 if (!ipr_is_naca_model(res))
4027 res->needs_sync_complete = 1;
4028
4029 LEAVE;
4030 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
4031 }
4032
4033 /**
4034 * ipr_eh_abort - Abort a single op
4035 * @scsi_cmd: scsi command struct
4036 *
4037 * Return value:
4038 * SUCCESS / FAILED
4039 **/
4040 static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
4041 {
4042 unsigned long flags;
4043 int rc;
4044
4045 ENTER;
4046
4047 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
4048 rc = ipr_cancel_op(scsi_cmd);
4049 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
4050
4051 LEAVE;
4052 return rc;
4053 }
4054
4055 /**
4056 * ipr_handle_other_interrupt - Handle "other" interrupts
4057 * @ioa_cfg: ioa config struct
4058 * @int_reg: interrupt register
4059 *
4060 * Return value:
4061 * IRQ_NONE / IRQ_HANDLED
4062 **/
4063 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
4064 volatile u32 int_reg)
4065 {
4066 irqreturn_t rc = IRQ_HANDLED;
4067
4068 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4069 /* Mask the interrupt */
4070 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
4071
4072 /* Clear the interrupt */
4073 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
4074 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4075
4076 list_del(&ioa_cfg->reset_cmd->queue);
4077 del_timer(&ioa_cfg->reset_cmd->timer);
4078 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
4079 } else {
4080 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
4081 ioa_cfg->ioa_unit_checked = 1;
4082 else
4083 dev_err(&ioa_cfg->pdev->dev,
4084 "Permanent IOA failure. 0x%08X\n", int_reg);
4085
4086 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4087 ioa_cfg->sdt_state = GET_DUMP;
4088
4089 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
4090 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4091 }
4092
4093 return rc;
4094 }
4095
4096 /**
4097 * ipr_isr - Interrupt service routine
4098 * @irq: irq number
4099 * @devp: pointer to ioa config struct
4100 *
4101 * Return value:
4102 * IRQ_NONE / IRQ_HANDLED
4103 **/
4104 static irqreturn_t ipr_isr(int irq, void *devp)
4105 {
4106 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
4107 unsigned long lock_flags = 0;
4108 volatile u32 int_reg, int_mask_reg;
4109 u32 ioasc;
4110 u16 cmd_index;
4111 struct ipr_cmnd *ipr_cmd;
4112 irqreturn_t rc = IRQ_NONE;
4113
4114 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4115
4116 /* If interrupts are disabled, ignore the interrupt */
4117 if (!ioa_cfg->allow_interrupts) {
4118 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4119 return IRQ_NONE;
4120 }
4121
4122 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4123 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4124
4125 /* If an interrupt on the adapter did not occur, ignore it */
4126 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
4127 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4128 return IRQ_NONE;
4129 }
4130
4131 while (1) {
4132 ipr_cmd = NULL;
4133
4134 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
4135 ioa_cfg->toggle_bit) {
4136
4137 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
4138 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
4139
4140 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
4141 ioa_cfg->errors_logged++;
4142 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
4143
4144 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4145 ioa_cfg->sdt_state = GET_DUMP;
4146
4147 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
4148 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4149 return IRQ_HANDLED;
4150 }
4151
4152 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
4153
4154 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4155
4156 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
4157
4158 list_del(&ipr_cmd->queue);
4159 del_timer(&ipr_cmd->timer);
4160 ipr_cmd->done(ipr_cmd);
4161
4162 rc = IRQ_HANDLED;
4163
4164 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
4165 ioa_cfg->hrrq_curr++;
4166 } else {
4167 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4168 ioa_cfg->toggle_bit ^= 1u;
4169 }
4170 }
4171
4172 if (ipr_cmd != NULL) {
4173 /* Clear the PCI interrupt */
4174 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
4175 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
4176 } else
4177 break;
4178 }
4179
4180 if (unlikely(rc == IRQ_NONE))
4181 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
4182
4183 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4184 return rc;
4185 }
4186
4187 /**
4188 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
4189 * @ioa_cfg: ioa config struct
4190 * @ipr_cmd: ipr command struct
4191 *
4192 * Return value:
4193 * 0 on success / -1 on failure
4194 **/
4195 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
4196 struct ipr_cmnd *ipr_cmd)
4197 {
4198 int i;
4199 struct scatterlist *sglist;
4200 u32 length;
4201 u32 ioadl_flags = 0;
4202 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4203 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4204 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4205
4206 length = scsi_cmd->request_bufflen;
4207
4208 if (length == 0)
4209 return 0;
4210
4211 if (scsi_cmd->use_sg) {
4212 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
4213 scsi_cmd->request_buffer,
4214 scsi_cmd->use_sg,
4215 scsi_cmd->sc_data_direction);
4216
4217 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4218 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4219 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4220 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4221 ioarcb->write_ioadl_len =
4222 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4223 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4224 ioadl_flags = IPR_IOADL_FLAGS_READ;
4225 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4226 ioarcb->read_ioadl_len =
4227 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
4228 }
4229
4230 sglist = scsi_cmd->request_buffer;
4231
4232 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
4233 ioadl[i].flags_and_data_len =
4234 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
4235 ioadl[i].address =
4236 cpu_to_be32(sg_dma_address(&sglist[i]));
4237 }
4238
4239 if (likely(ipr_cmd->dma_use_sg)) {
4240 ioadl[i-1].flags_and_data_len |=
4241 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4242 return 0;
4243 } else
4244 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
4245 } else {
4246 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
4247 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
4248 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4249 ioarcb->write_data_transfer_length = cpu_to_be32(length);
4250 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4251 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
4252 ioadl_flags = IPR_IOADL_FLAGS_READ;
4253 ioarcb->read_data_transfer_length = cpu_to_be32(length);
4254 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4255 }
4256
4257 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
4258 scsi_cmd->request_buffer, length,
4259 scsi_cmd->sc_data_direction);
4260
4261 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
4262 ipr_cmd->dma_use_sg = 1;
4263 ioadl[0].flags_and_data_len =
4264 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
4265 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
4266 return 0;
4267 } else
4268 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
4269 }
4270
4271 return -1;
4272 }
4273
4274 /**
4275 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
4276 * @scsi_cmd: scsi command struct
4277 *
4278 * Return value:
4279 * task attributes
4280 **/
4281 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
4282 {
4283 u8 tag[2];
4284 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
4285
4286 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
4287 switch (tag[0]) {
4288 case MSG_SIMPLE_TAG:
4289 rc = IPR_FLAGS_LO_SIMPLE_TASK;
4290 break;
4291 case MSG_HEAD_TAG:
4292 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
4293 break;
4294 case MSG_ORDERED_TAG:
4295 rc = IPR_FLAGS_LO_ORDERED_TASK;
4296 break;
4297 };
4298 }
4299
4300 return rc;
4301 }
4302
4303 /**
4304 * ipr_erp_done - Process completion of ERP for a device
4305 * @ipr_cmd: ipr command struct
4306 *
4307 * This function copies the sense buffer into the scsi_cmd
4308 * struct and pushes the scsi_done function.
4309 *
4310 * Return value:
4311 * nothing
4312 **/
4313 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
4314 {
4315 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4316 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4317 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4318 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4319
4320 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4321 scsi_cmd->result |= (DID_ERROR << 16);
4322 scmd_printk(KERN_ERR, scsi_cmd,
4323 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
4324 } else {
4325 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
4326 SCSI_SENSE_BUFFERSIZE);
4327 }
4328
4329 if (res) {
4330 if (!ipr_is_naca_model(res))
4331 res->needs_sync_complete = 1;
4332 res->in_erp = 0;
4333 }
4334 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4335 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4336 scsi_cmd->scsi_done(scsi_cmd);
4337 }
4338
4339 /**
4340 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
4341 * @ipr_cmd: ipr command struct
4342 *
4343 * Return value:
4344 * none
4345 **/
4346 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
4347 {
4348 struct ipr_ioarcb *ioarcb;
4349 struct ipr_ioasa *ioasa;
4350
4351 ioarcb = &ipr_cmd->ioarcb;
4352 ioasa = &ipr_cmd->ioasa;
4353
4354 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
4355 ioarcb->write_data_transfer_length = 0;
4356 ioarcb->read_data_transfer_length = 0;
4357 ioarcb->write_ioadl_len = 0;
4358 ioarcb->read_ioadl_len = 0;
4359 ioasa->ioasc = 0;
4360 ioasa->residual_data_len = 0;
4361 }
4362
4363 /**
4364 * ipr_erp_request_sense - Send request sense to a device
4365 * @ipr_cmd: ipr command struct
4366 *
4367 * This function sends a request sense to a device as a result
4368 * of a check condition.
4369 *
4370 * Return value:
4371 * nothing
4372 **/
4373 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
4374 {
4375 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4376 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4377
4378 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
4379 ipr_erp_done(ipr_cmd);
4380 return;
4381 }
4382
4383 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4384
4385 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
4386 cmd_pkt->cdb[0] = REQUEST_SENSE;
4387 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
4388 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
4389 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4390 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
4391
4392 ipr_cmd->ioadl[0].flags_and_data_len =
4393 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
4394 ipr_cmd->ioadl[0].address =
4395 cpu_to_be32(ipr_cmd->sense_buffer_dma);
4396
4397 ipr_cmd->ioarcb.read_ioadl_len =
4398 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4399 ipr_cmd->ioarcb.read_data_transfer_length =
4400 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
4401
4402 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
4403 IPR_REQUEST_SENSE_TIMEOUT * 2);
4404 }
4405
4406 /**
4407 * ipr_erp_cancel_all - Send cancel all to a device
4408 * @ipr_cmd: ipr command struct
4409 *
4410 * This function sends a cancel all to a device to clear the
4411 * queue. If we are running TCQ on the device, QERR is set to 1,
4412 * which means all outstanding ops have been dropped on the floor.
4413 * Cancel all will return them to us.
4414 *
4415 * Return value:
4416 * nothing
4417 **/
4418 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
4419 {
4420 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4421 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4422 struct ipr_cmd_pkt *cmd_pkt;
4423
4424 res->in_erp = 1;
4425
4426 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
4427
4428 if (!scsi_get_tag_type(scsi_cmd->device)) {
4429 ipr_erp_request_sense(ipr_cmd);
4430 return;
4431 }
4432
4433 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
4434 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4435 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
4436
4437 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
4438 IPR_CANCEL_ALL_TIMEOUT);
4439 }
4440
4441 /**
4442 * ipr_dump_ioasa - Dump contents of IOASA
4443 * @ioa_cfg: ioa config struct
4444 * @ipr_cmd: ipr command struct
4445 * @res: resource entry struct
4446 *
4447 * This function is invoked by the interrupt handler when ops
4448 * fail. It will log the IOASA if appropriate. Only called
4449 * for GPDD ops.
4450 *
4451 * Return value:
4452 * none
4453 **/
4454 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
4455 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
4456 {
4457 int i;
4458 u16 data_len;
4459 u32 ioasc;
4460 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4461 __be32 *ioasa_data = (__be32 *)ioasa;
4462 int error_index;
4463
4464 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
4465
4466 if (0 == ioasc)
4467 return;
4468
4469 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
4470 return;
4471
4472 error_index = ipr_get_error(ioasc);
4473
4474 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
4475 /* Don't log an error if the IOA already logged one */
4476 if (ioasa->ilid != 0)
4477 return;
4478
4479 if (ipr_error_table[error_index].log_ioasa == 0)
4480 return;
4481 }
4482
4483 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
4484
4485 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
4486 data_len = sizeof(struct ipr_ioasa);
4487 else
4488 data_len = be16_to_cpu(ioasa->ret_stat_len);
4489
4490 ipr_err("IOASA Dump:\n");
4491
4492 for (i = 0; i < data_len / 4; i += 4) {
4493 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
4494 be32_to_cpu(ioasa_data[i]),
4495 be32_to_cpu(ioasa_data[i+1]),
4496 be32_to_cpu(ioasa_data[i+2]),
4497 be32_to_cpu(ioasa_data[i+3]));
4498 }
4499 }
4500
4501 /**
4502 * ipr_gen_sense - Generate SCSI sense data from an IOASA
4503 * @ioasa: IOASA
4504 * @sense_buf: sense data buffer
4505 *
4506 * Return value:
4507 * none
4508 **/
4509 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
4510 {
4511 u32 failing_lba;
4512 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
4513 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
4514 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4515 u32 ioasc = be32_to_cpu(ioasa->ioasc);
4516
4517 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
4518
4519 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
4520 return;
4521
4522 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
4523
4524 if (ipr_is_vset_device(res) &&
4525 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
4526 ioasa->u.vset.failing_lba_hi != 0) {
4527 sense_buf[0] = 0x72;
4528 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
4529 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
4530 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
4531
4532 sense_buf[7] = 12;
4533 sense_buf[8] = 0;
4534 sense_buf[9] = 0x0A;
4535 sense_buf[10] = 0x80;
4536
4537 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
4538
4539 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
4540 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
4541 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
4542 sense_buf[15] = failing_lba & 0x000000ff;
4543
4544 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4545
4546 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
4547 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
4548 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
4549 sense_buf[19] = failing_lba & 0x000000ff;
4550 } else {
4551 sense_buf[0] = 0x70;
4552 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
4553 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
4554 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
4555
4556 /* Illegal request */
4557 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
4558 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
4559 sense_buf[7] = 10; /* additional length */
4560
4561 /* IOARCB was in error */
4562 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
4563 sense_buf[15] = 0xC0;
4564 else /* Parameter data was invalid */
4565 sense_buf[15] = 0x80;
4566
4567 sense_buf[16] =
4568 ((IPR_FIELD_POINTER_MASK &
4569 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
4570 sense_buf[17] =
4571 (IPR_FIELD_POINTER_MASK &
4572 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
4573 } else {
4574 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
4575 if (ipr_is_vset_device(res))
4576 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
4577 else
4578 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
4579
4580 sense_buf[0] |= 0x80; /* Or in the Valid bit */
4581 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
4582 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
4583 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
4584 sense_buf[6] = failing_lba & 0x000000ff;
4585 }
4586
4587 sense_buf[7] = 6; /* additional length */
4588 }
4589 }
4590 }
4591
4592 /**
4593 * ipr_get_autosense - Copy autosense data to sense buffer
4594 * @ipr_cmd: ipr command struct
4595 *
4596 * This function copies the autosense buffer to the buffer
4597 * in the scsi_cmd, if there is autosense available.
4598 *
4599 * Return value:
4600 * 1 if autosense was available / 0 if not
4601 **/
4602 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
4603 {
4604 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
4605
4606 if ((be32_to_cpu(ioasa->ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
4607 return 0;
4608
4609 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
4610 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
4611 SCSI_SENSE_BUFFERSIZE));
4612 return 1;
4613 }
4614
4615 /**
4616 * ipr_erp_start - Process an error response for a SCSI op
4617 * @ioa_cfg: ioa config struct
4618 * @ipr_cmd: ipr command struct
4619 *
4620 * This function determines whether or not to initiate ERP
4621 * on the affected device.
4622 *
4623 * Return value:
4624 * nothing
4625 **/
4626 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
4627 struct ipr_cmnd *ipr_cmd)
4628 {
4629 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4630 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
4631 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4632
4633 if (!res) {
4634 ipr_scsi_eh_done(ipr_cmd);
4635 return;
4636 }
4637
4638 if (ipr_is_gscsi(res))
4639 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
4640 else
4641 ipr_gen_sense(ipr_cmd);
4642
4643 switch (ioasc & IPR_IOASC_IOASC_MASK) {
4644 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
4645 if (ipr_is_naca_model(res))
4646 scsi_cmd->result |= (DID_ABORT << 16);
4647 else
4648 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4649 break;
4650 case IPR_IOASC_IR_RESOURCE_HANDLE:
4651 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
4652 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4653 break;
4654 case IPR_IOASC_HW_SEL_TIMEOUT:
4655 scsi_cmd->result |= (DID_NO_CONNECT << 16);
4656 if (!ipr_is_naca_model(res))
4657 res->needs_sync_complete = 1;
4658 break;
4659 case IPR_IOASC_SYNC_REQUIRED:
4660 if (!res->in_erp)
4661 res->needs_sync_complete = 1;
4662 scsi_cmd->result |= (DID_IMM_RETRY << 16);
4663 break;
4664 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
4665 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
4666 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
4667 break;
4668 case IPR_IOASC_BUS_WAS_RESET:
4669 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
4670 /*
4671 * Report the bus reset and ask for a retry. The device
4672 * will give CC/UA the next command.
4673 */
4674 if (!res->resetting_device)
4675 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
4676 scsi_cmd->result |= (DID_ERROR << 16);
4677 if (!ipr_is_naca_model(res))
4678 res->needs_sync_complete = 1;
4679 break;
4680 case IPR_IOASC_HW_DEV_BUS_STATUS:
4681 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
4682 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
4683 if (!ipr_get_autosense(ipr_cmd)) {
4684 if (!ipr_is_naca_model(res)) {
4685 ipr_erp_cancel_all(ipr_cmd);
4686 return;
4687 }
4688 }
4689 }
4690 if (!ipr_is_naca_model(res))
4691 res->needs_sync_complete = 1;
4692 break;
4693 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
4694 break;
4695 default:
4696 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
4697 scsi_cmd->result |= (DID_ERROR << 16);
4698 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
4699 res->needs_sync_complete = 1;
4700 break;
4701 }
4702
4703 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4704 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4705 scsi_cmd->scsi_done(scsi_cmd);
4706 }
4707
4708 /**
4709 * ipr_scsi_done - mid-layer done function
4710 * @ipr_cmd: ipr command struct
4711 *
4712 * This function is invoked by the interrupt handler for
4713 * ops generated by the SCSI mid-layer
4714 *
4715 * Return value:
4716 * none
4717 **/
4718 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
4719 {
4720 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4721 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
4722 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
4723
4724 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
4725
4726 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
4727 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
4728 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4729 scsi_cmd->scsi_done(scsi_cmd);
4730 } else
4731 ipr_erp_start(ioa_cfg, ipr_cmd);
4732 }
4733
4734 /**
4735 * ipr_queuecommand - Queue a mid-layer request
4736 * @scsi_cmd: scsi command struct
4737 * @done: done function
4738 *
4739 * This function queues a request generated by the mid-layer.
4740 *
4741 * Return value:
4742 * 0 on success
4743 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
4744 * SCSI_MLQUEUE_HOST_BUSY if host is busy
4745 **/
4746 static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
4747 void (*done) (struct scsi_cmnd *))
4748 {
4749 struct ipr_ioa_cfg *ioa_cfg;
4750 struct ipr_resource_entry *res;
4751 struct ipr_ioarcb *ioarcb;
4752 struct ipr_cmnd *ipr_cmd;
4753 int rc = 0;
4754
4755 scsi_cmd->scsi_done = done;
4756 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
4757 res = scsi_cmd->device->hostdata;
4758 scsi_cmd->result = (DID_OK << 16);
4759
4760 /*
4761 * We are currently blocking all devices due to a host reset
4762 * We have told the host to stop giving us new requests, but
4763 * ERP ops don't count. FIXME
4764 */
4765 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
4766 return SCSI_MLQUEUE_HOST_BUSY;
4767
4768 /*
4769 * FIXME - Create scsi_set_host_offline interface
4770 * and the ioa_is_dead check can be removed
4771 */
4772 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
4773 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
4774 scsi_cmd->result = (DID_NO_CONNECT << 16);
4775 scsi_cmd->scsi_done(scsi_cmd);
4776 return 0;
4777 }
4778
4779 if (ipr_is_gata(res) && res->sata_port)
4780 return ata_sas_queuecmd(scsi_cmd, done, res->sata_port->ap);
4781
4782 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4783 ioarcb = &ipr_cmd->ioarcb;
4784 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4785
4786 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
4787 ipr_cmd->scsi_cmd = scsi_cmd;
4788 ioarcb->res_handle = res->cfgte.res_handle;
4789 ipr_cmd->done = ipr_scsi_done;
4790 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
4791
4792 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
4793 if (scsi_cmd->underflow == 0)
4794 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
4795
4796 if (res->needs_sync_complete) {
4797 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
4798 res->needs_sync_complete = 0;
4799 }
4800
4801 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
4802 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
4803 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
4804 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
4805 }
4806
4807 if (scsi_cmd->cmnd[0] >= 0xC0 &&
4808 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
4809 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4810
4811 if (likely(rc == 0))
4812 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
4813
4814 if (likely(rc == 0)) {
4815 mb();
4816 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
4817 ioa_cfg->regs.ioarrin_reg);
4818 } else {
4819 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4820 return SCSI_MLQUEUE_HOST_BUSY;
4821 }
4822
4823 return 0;
4824 }
4825
4826 /**
4827 * ipr_ioctl - IOCTL handler
4828 * @sdev: scsi device struct
4829 * @cmd: IOCTL cmd
4830 * @arg: IOCTL arg
4831 *
4832 * Return value:
4833 * 0 on success / other on failure
4834 **/
4835 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
4836 {
4837 struct ipr_resource_entry *res;
4838
4839 res = (struct ipr_resource_entry *)sdev->hostdata;
4840 if (res && ipr_is_gata(res))
4841 return ata_scsi_ioctl(sdev, cmd, arg);
4842
4843 return -EINVAL;
4844 }
4845
4846 /**
4847 * ipr_info - Get information about the card/driver
4848 * @scsi_host: scsi host struct
4849 *
4850 * Return value:
4851 * pointer to buffer with description string
4852 **/
4853 static const char * ipr_ioa_info(struct Scsi_Host *host)
4854 {
4855 static char buffer[512];
4856 struct ipr_ioa_cfg *ioa_cfg;
4857 unsigned long lock_flags = 0;
4858
4859 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
4860
4861 spin_lock_irqsave(host->host_lock, lock_flags);
4862 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
4863 spin_unlock_irqrestore(host->host_lock, lock_flags);
4864
4865 return buffer;
4866 }
4867
4868 static struct scsi_host_template driver_template = {
4869 .module = THIS_MODULE,
4870 .name = "IPR",
4871 .info = ipr_ioa_info,
4872 .ioctl = ipr_ioctl,
4873 .queuecommand = ipr_queuecommand,
4874 .eh_abort_handler = ipr_eh_abort,
4875 .eh_device_reset_handler = ipr_eh_dev_reset,
4876 .eh_host_reset_handler = ipr_eh_host_reset,
4877 .slave_alloc = ipr_slave_alloc,
4878 .slave_configure = ipr_slave_configure,
4879 .slave_destroy = ipr_slave_destroy,
4880 .target_alloc = ipr_target_alloc,
4881 .target_destroy = ipr_target_destroy,
4882 .change_queue_depth = ipr_change_queue_depth,
4883 .change_queue_type = ipr_change_queue_type,
4884 .bios_param = ipr_biosparam,
4885 .can_queue = IPR_MAX_COMMANDS,
4886 .this_id = -1,
4887 .sg_tablesize = IPR_MAX_SGLIST,
4888 .max_sectors = IPR_IOA_MAX_SECTORS,
4889 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
4890 .use_clustering = ENABLE_CLUSTERING,
4891 .shost_attrs = ipr_ioa_attrs,
4892 .sdev_attrs = ipr_dev_attrs,
4893 .proc_name = IPR_NAME
4894 };
4895
4896 /**
4897 * ipr_ata_phy_reset - libata phy_reset handler
4898 * @ap: ata port to reset
4899 *
4900 **/
4901 static void ipr_ata_phy_reset(struct ata_port *ap)
4902 {
4903 unsigned long flags;
4904 struct ipr_sata_port *sata_port = ap->private_data;
4905 struct ipr_resource_entry *res = sata_port->res;
4906 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4907 int rc;
4908
4909 ENTER;
4910 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4911 while(ioa_cfg->in_reset_reload) {
4912 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4913 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4914 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4915 }
4916
4917 if (!ioa_cfg->allow_cmds)
4918 goto out_unlock;
4919
4920 rc = ipr_device_reset(ioa_cfg, res);
4921
4922 if (rc) {
4923 ap->ops->port_disable(ap);
4924 goto out_unlock;
4925 }
4926
4927 switch(res->cfgte.proto) {
4928 case IPR_PROTO_SATA:
4929 case IPR_PROTO_SAS_STP:
4930 ap->device[0].class = ATA_DEV_ATA;
4931 break;
4932 case IPR_PROTO_SATA_ATAPI:
4933 case IPR_PROTO_SAS_STP_ATAPI:
4934 ap->device[0].class = ATA_DEV_ATAPI;
4935 break;
4936 default:
4937 ap->device[0].class = ATA_DEV_UNKNOWN;
4938 ap->ops->port_disable(ap);
4939 break;
4940 };
4941
4942 out_unlock:
4943 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4944 LEAVE;
4945 }
4946
4947 /**
4948 * ipr_ata_post_internal - Cleanup after an internal command
4949 * @qc: ATA queued command
4950 *
4951 * Return value:
4952 * none
4953 **/
4954 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
4955 {
4956 struct ipr_sata_port *sata_port = qc->ap->private_data;
4957 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4958 struct ipr_cmnd *ipr_cmd;
4959 unsigned long flags;
4960
4961 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4962 while(ioa_cfg->in_reset_reload) {
4963 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4964 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4965 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
4966 }
4967
4968 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
4969 if (ipr_cmd->qc == qc) {
4970 ipr_device_reset(ioa_cfg, sata_port->res);
4971 break;
4972 }
4973 }
4974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
4975 }
4976
4977 /**
4978 * ipr_tf_read - Read the current ATA taskfile for the ATA port
4979 * @ap: ATA port
4980 * @tf: destination ATA taskfile
4981 *
4982 * Return value:
4983 * none
4984 **/
4985 static void ipr_tf_read(struct ata_port *ap, struct ata_taskfile *tf)
4986 {
4987 struct ipr_sata_port *sata_port = ap->private_data;
4988 struct ipr_ioasa_gata *g = &sata_port->ioasa;
4989
4990 tf->feature = g->error;
4991 tf->nsect = g->nsect;
4992 tf->lbal = g->lbal;
4993 tf->lbam = g->lbam;
4994 tf->lbah = g->lbah;
4995 tf->device = g->device;
4996 tf->command = g->status;
4997 tf->hob_nsect = g->hob_nsect;
4998 tf->hob_lbal = g->hob_lbal;
4999 tf->hob_lbam = g->hob_lbam;
5000 tf->hob_lbah = g->hob_lbah;
5001 tf->ctl = g->alt_status;
5002 }
5003
5004 /**
5005 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
5006 * @regs: destination
5007 * @tf: source ATA taskfile
5008 *
5009 * Return value:
5010 * none
5011 **/
5012 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
5013 struct ata_taskfile *tf)
5014 {
5015 regs->feature = tf->feature;
5016 regs->nsect = tf->nsect;
5017 regs->lbal = tf->lbal;
5018 regs->lbam = tf->lbam;
5019 regs->lbah = tf->lbah;
5020 regs->device = tf->device;
5021 regs->command = tf->command;
5022 regs->hob_feature = tf->hob_feature;
5023 regs->hob_nsect = tf->hob_nsect;
5024 regs->hob_lbal = tf->hob_lbal;
5025 regs->hob_lbam = tf->hob_lbam;
5026 regs->hob_lbah = tf->hob_lbah;
5027 regs->ctl = tf->ctl;
5028 }
5029
5030 /**
5031 * ipr_sata_done - done function for SATA commands
5032 * @ipr_cmd: ipr command struct
5033 *
5034 * This function is invoked by the interrupt handler for
5035 * ops generated by the SCSI mid-layer to SATA devices
5036 *
5037 * Return value:
5038 * none
5039 **/
5040 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
5041 {
5042 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5043 struct ata_queued_cmd *qc = ipr_cmd->qc;
5044 struct ipr_sata_port *sata_port = qc->ap->private_data;
5045 struct ipr_resource_entry *res = sata_port->res;
5046 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5047
5048 memcpy(&sata_port->ioasa, &ipr_cmd->ioasa.u.gata,
5049 sizeof(struct ipr_ioasa_gata));
5050 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5051
5052 if (be32_to_cpu(ipr_cmd->ioasa.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
5053 scsi_report_device_reset(ioa_cfg->host, res->cfgte.res_addr.bus,
5054 res->cfgte.res_addr.target);
5055
5056 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
5057 qc->err_mask |= __ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5058 else
5059 qc->err_mask |= ac_err_mask(ipr_cmd->ioasa.u.gata.status);
5060 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5061 ata_qc_complete(qc);
5062 }
5063
5064 /**
5065 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
5066 * @ipr_cmd: ipr command struct
5067 * @qc: ATA queued command
5068 *
5069 **/
5070 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
5071 struct ata_queued_cmd *qc)
5072 {
5073 u32 ioadl_flags = 0;
5074 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5075 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5076 int len = qc->nbytes + qc->pad_len;
5077 struct scatterlist *sg;
5078
5079 if (len == 0)
5080 return;
5081
5082 if (qc->dma_dir == DMA_TO_DEVICE) {
5083 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5084 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5085 ioarcb->write_data_transfer_length = cpu_to_be32(len);
5086 ioarcb->write_ioadl_len =
5087 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5088 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
5089 ioadl_flags = IPR_IOADL_FLAGS_READ;
5090 ioarcb->read_data_transfer_length = cpu_to_be32(len);
5091 ioarcb->read_ioadl_len =
5092 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5093 }
5094
5095 ata_for_each_sg(sg, qc) {
5096 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5097 ioadl->address = cpu_to_be32(sg_dma_address(sg));
5098 if (ata_sg_is_last(sg, qc))
5099 ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5100 else
5101 ioadl++;
5102 }
5103 }
5104
5105 /**
5106 * ipr_qc_issue - Issue a SATA qc to a device
5107 * @qc: queued command
5108 *
5109 * Return value:
5110 * 0 if success
5111 **/
5112 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
5113 {
5114 struct ata_port *ap = qc->ap;
5115 struct ipr_sata_port *sata_port = ap->private_data;
5116 struct ipr_resource_entry *res = sata_port->res;
5117 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5118 struct ipr_cmnd *ipr_cmd;
5119 struct ipr_ioarcb *ioarcb;
5120 struct ipr_ioarcb_ata_regs *regs;
5121
5122 if (unlikely(!ioa_cfg->allow_cmds || ioa_cfg->ioa_is_dead))
5123 return -EIO;
5124
5125 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5126 ioarcb = &ipr_cmd->ioarcb;
5127 regs = &ioarcb->add_data.u.regs;
5128
5129 memset(&ioarcb->add_data, 0, sizeof(ioarcb->add_data));
5130 ioarcb->add_cmd_parms_len = cpu_to_be32(sizeof(ioarcb->add_data.u.regs));
5131
5132 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
5133 ipr_cmd->qc = qc;
5134 ipr_cmd->done = ipr_sata_done;
5135 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
5136 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
5137 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
5138 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5139 ipr_cmd->dma_use_sg = qc->pad_len ? qc->n_elem + 1 : qc->n_elem;
5140
5141 ipr_build_ata_ioadl(ipr_cmd, qc);
5142 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5143 ipr_copy_sata_tf(regs, &qc->tf);
5144 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
5145 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
5146
5147 switch (qc->tf.protocol) {
5148 case ATA_PROT_NODATA:
5149 case ATA_PROT_PIO:
5150 break;
5151
5152 case ATA_PROT_DMA:
5153 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5154 break;
5155
5156 case ATA_PROT_ATAPI:
5157 case ATA_PROT_ATAPI_NODATA:
5158 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5159 break;
5160
5161 case ATA_PROT_ATAPI_DMA:
5162 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
5163 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
5164 break;
5165
5166 default:
5167 WARN_ON(1);
5168 return -1;
5169 }
5170
5171 mb();
5172 writel(be32_to_cpu(ioarcb->ioarcb_host_pci_addr),
5173 ioa_cfg->regs.ioarrin_reg);
5174 return 0;
5175 }
5176
5177 /**
5178 * ipr_ata_check_status - Return last ATA status
5179 * @ap: ATA port
5180 *
5181 * Return value:
5182 * ATA status
5183 **/
5184 static u8 ipr_ata_check_status(struct ata_port *ap)
5185 {
5186 struct ipr_sata_port *sata_port = ap->private_data;
5187 return sata_port->ioasa.status;
5188 }
5189
5190 /**
5191 * ipr_ata_check_altstatus - Return last ATA altstatus
5192 * @ap: ATA port
5193 *
5194 * Return value:
5195 * Alt ATA status
5196 **/
5197 static u8 ipr_ata_check_altstatus(struct ata_port *ap)
5198 {
5199 struct ipr_sata_port *sata_port = ap->private_data;
5200 return sata_port->ioasa.alt_status;
5201 }
5202
5203 static struct ata_port_operations ipr_sata_ops = {
5204 .port_disable = ata_port_disable,
5205 .check_status = ipr_ata_check_status,
5206 .check_altstatus = ipr_ata_check_altstatus,
5207 .dev_select = ata_noop_dev_select,
5208 .phy_reset = ipr_ata_phy_reset,
5209 .post_internal_cmd = ipr_ata_post_internal,
5210 .tf_read = ipr_tf_read,
5211 .qc_prep = ata_noop_qc_prep,
5212 .qc_issue = ipr_qc_issue,
5213 .port_start = ata_sas_port_start,
5214 .port_stop = ata_sas_port_stop
5215 };
5216
5217 static struct ata_port_info sata_port_info = {
5218 .flags = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | ATA_FLAG_SATA_RESET |
5219 ATA_FLAG_MMIO | ATA_FLAG_PIO_DMA,
5220 .pio_mask = 0x10, /* pio4 */
5221 .mwdma_mask = 0x07,
5222 .udma_mask = 0x7f, /* udma0-6 */
5223 .port_ops = &ipr_sata_ops
5224 };
5225
5226 #ifdef CONFIG_PPC_PSERIES
5227 static const u16 ipr_blocked_processors[] = {
5228 PV_NORTHSTAR,
5229 PV_PULSAR,
5230 PV_POWER4,
5231 PV_ICESTAR,
5232 PV_SSTAR,
5233 PV_POWER4p,
5234 PV_630,
5235 PV_630p
5236 };
5237
5238 /**
5239 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
5240 * @ioa_cfg: ioa cfg struct
5241 *
5242 * Adapters that use Gemstone revision < 3.1 do not work reliably on
5243 * certain pSeries hardware. This function determines if the given
5244 * adapter is in one of these confgurations or not.
5245 *
5246 * Return value:
5247 * 1 if adapter is not supported / 0 if adapter is supported
5248 **/
5249 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
5250 {
5251 u8 rev_id;
5252 int i;
5253
5254 if (ioa_cfg->type == 0x5702) {
5255 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
5256 &rev_id) == PCIBIOS_SUCCESSFUL) {
5257 if (rev_id < 4) {
5258 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
5259 if (__is_processor(ipr_blocked_processors[i]))
5260 return 1;
5261 }
5262 }
5263 }
5264 }
5265 return 0;
5266 }
5267 #else
5268 #define ipr_invalid_adapter(ioa_cfg) 0
5269 #endif
5270
5271 /**
5272 * ipr_ioa_bringdown_done - IOA bring down completion.
5273 * @ipr_cmd: ipr command struct
5274 *
5275 * This function processes the completion of an adapter bring down.
5276 * It wakes any reset sleepers.
5277 *
5278 * Return value:
5279 * IPR_RC_JOB_RETURN
5280 **/
5281 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
5282 {
5283 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5284
5285 ENTER;
5286 ioa_cfg->in_reset_reload = 0;
5287 ioa_cfg->reset_retries = 0;
5288 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5289 wake_up_all(&ioa_cfg->reset_wait_q);
5290
5291 spin_unlock_irq(ioa_cfg->host->host_lock);
5292 scsi_unblock_requests(ioa_cfg->host);
5293 spin_lock_irq(ioa_cfg->host->host_lock);
5294 LEAVE;
5295
5296 return IPR_RC_JOB_RETURN;
5297 }
5298
5299 /**
5300 * ipr_ioa_reset_done - IOA reset completion.
5301 * @ipr_cmd: ipr command struct
5302 *
5303 * This function processes the completion of an adapter reset.
5304 * It schedules any necessary mid-layer add/removes and
5305 * wakes any reset sleepers.
5306 *
5307 * Return value:
5308 * IPR_RC_JOB_RETURN
5309 **/
5310 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
5311 {
5312 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5313 struct ipr_resource_entry *res;
5314 struct ipr_hostrcb *hostrcb, *temp;
5315 int i = 0;
5316
5317 ENTER;
5318 ioa_cfg->in_reset_reload = 0;
5319 ioa_cfg->allow_cmds = 1;
5320 ioa_cfg->reset_cmd = NULL;
5321 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
5322
5323 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5324 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
5325 ipr_trace;
5326 break;
5327 }
5328 }
5329 schedule_work(&ioa_cfg->work_q);
5330
5331 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
5332 list_del(&hostrcb->queue);
5333 if (i++ < IPR_NUM_LOG_HCAMS)
5334 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
5335 else
5336 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
5337 }
5338
5339 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
5340
5341 ioa_cfg->reset_retries = 0;
5342 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5343 wake_up_all(&ioa_cfg->reset_wait_q);
5344
5345 spin_unlock_irq(ioa_cfg->host->host_lock);
5346 scsi_unblock_requests(ioa_cfg->host);
5347 spin_lock_irq(ioa_cfg->host->host_lock);
5348
5349 if (!ioa_cfg->allow_cmds)
5350 scsi_block_requests(ioa_cfg->host);
5351
5352 LEAVE;
5353 return IPR_RC_JOB_RETURN;
5354 }
5355
5356 /**
5357 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
5358 * @supported_dev: supported device struct
5359 * @vpids: vendor product id struct
5360 *
5361 * Return value:
5362 * none
5363 **/
5364 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
5365 struct ipr_std_inq_vpids *vpids)
5366 {
5367 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
5368 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
5369 supported_dev->num_records = 1;
5370 supported_dev->data_length =
5371 cpu_to_be16(sizeof(struct ipr_supported_device));
5372 supported_dev->reserved = 0;
5373 }
5374
5375 /**
5376 * ipr_set_supported_devs - Send Set Supported Devices for a device
5377 * @ipr_cmd: ipr command struct
5378 *
5379 * This function send a Set Supported Devices to the adapter
5380 *
5381 * Return value:
5382 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5383 **/
5384 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
5385 {
5386 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5387 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
5388 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5389 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5390 struct ipr_resource_entry *res = ipr_cmd->u.res;
5391
5392 ipr_cmd->job_step = ipr_ioa_reset_done;
5393
5394 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
5395 if (!ipr_is_scsi_disk(res))
5396 continue;
5397
5398 ipr_cmd->u.res = res;
5399 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
5400
5401 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5402 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5403 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5404
5405 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
5406 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
5407 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
5408
5409 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
5410 sizeof(struct ipr_supported_device));
5411 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
5412 offsetof(struct ipr_misc_cbs, supp_dev));
5413 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5414 ioarcb->write_data_transfer_length =
5415 cpu_to_be32(sizeof(struct ipr_supported_device));
5416
5417 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5418 IPR_SET_SUP_DEVICE_TIMEOUT);
5419
5420 ipr_cmd->job_step = ipr_set_supported_devs;
5421 return IPR_RC_JOB_RETURN;
5422 }
5423
5424 return IPR_RC_JOB_CONTINUE;
5425 }
5426
5427 /**
5428 * ipr_setup_write_cache - Disable write cache if needed
5429 * @ipr_cmd: ipr command struct
5430 *
5431 * This function sets up adapters write cache to desired setting
5432 *
5433 * Return value:
5434 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5435 **/
5436 static int ipr_setup_write_cache(struct ipr_cmnd *ipr_cmd)
5437 {
5438 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5439
5440 ipr_cmd->job_step = ipr_set_supported_devs;
5441 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
5442 struct ipr_resource_entry, queue);
5443
5444 if (ioa_cfg->cache_state != CACHE_DISABLED)
5445 return IPR_RC_JOB_CONTINUE;
5446
5447 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5448 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5449 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5450 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
5451
5452 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5453
5454 return IPR_RC_JOB_RETURN;
5455 }
5456
5457 /**
5458 * ipr_get_mode_page - Locate specified mode page
5459 * @mode_pages: mode page buffer
5460 * @page_code: page code to find
5461 * @len: minimum required length for mode page
5462 *
5463 * Return value:
5464 * pointer to mode page / NULL on failure
5465 **/
5466 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
5467 u32 page_code, u32 len)
5468 {
5469 struct ipr_mode_page_hdr *mode_hdr;
5470 u32 page_length;
5471 u32 length;
5472
5473 if (!mode_pages || (mode_pages->hdr.length == 0))
5474 return NULL;
5475
5476 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
5477 mode_hdr = (struct ipr_mode_page_hdr *)
5478 (mode_pages->data + mode_pages->hdr.block_desc_len);
5479
5480 while (length) {
5481 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
5482 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
5483 return mode_hdr;
5484 break;
5485 } else {
5486 page_length = (sizeof(struct ipr_mode_page_hdr) +
5487 mode_hdr->page_length);
5488 length -= page_length;
5489 mode_hdr = (struct ipr_mode_page_hdr *)
5490 ((unsigned long)mode_hdr + page_length);
5491 }
5492 }
5493 return NULL;
5494 }
5495
5496 /**
5497 * ipr_check_term_power - Check for term power errors
5498 * @ioa_cfg: ioa config struct
5499 * @mode_pages: IOAFP mode pages buffer
5500 *
5501 * Check the IOAFP's mode page 28 for term power errors
5502 *
5503 * Return value:
5504 * nothing
5505 **/
5506 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
5507 struct ipr_mode_pages *mode_pages)
5508 {
5509 int i;
5510 int entry_length;
5511 struct ipr_dev_bus_entry *bus;
5512 struct ipr_mode_page28 *mode_page;
5513
5514 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5515 sizeof(struct ipr_mode_page28));
5516
5517 entry_length = mode_page->entry_length;
5518
5519 bus = mode_page->bus;
5520
5521 for (i = 0; i < mode_page->num_entries; i++) {
5522 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
5523 dev_err(&ioa_cfg->pdev->dev,
5524 "Term power is absent on scsi bus %d\n",
5525 bus->res_addr.bus);
5526 }
5527
5528 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
5529 }
5530 }
5531
5532 /**
5533 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
5534 * @ioa_cfg: ioa config struct
5535 *
5536 * Looks through the config table checking for SES devices. If
5537 * the SES device is in the SES table indicating a maximum SCSI
5538 * bus speed, the speed is limited for the bus.
5539 *
5540 * Return value:
5541 * none
5542 **/
5543 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
5544 {
5545 u32 max_xfer_rate;
5546 int i;
5547
5548 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5549 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
5550 ioa_cfg->bus_attr[i].bus_width);
5551
5552 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
5553 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
5554 }
5555 }
5556
5557 /**
5558 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
5559 * @ioa_cfg: ioa config struct
5560 * @mode_pages: mode page 28 buffer
5561 *
5562 * Updates mode page 28 based on driver configuration
5563 *
5564 * Return value:
5565 * none
5566 **/
5567 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
5568 struct ipr_mode_pages *mode_pages)
5569 {
5570 int i, entry_length;
5571 struct ipr_dev_bus_entry *bus;
5572 struct ipr_bus_attributes *bus_attr;
5573 struct ipr_mode_page28 *mode_page;
5574
5575 mode_page = ipr_get_mode_page(mode_pages, 0x28,
5576 sizeof(struct ipr_mode_page28));
5577
5578 entry_length = mode_page->entry_length;
5579
5580 /* Loop for each device bus entry */
5581 for (i = 0, bus = mode_page->bus;
5582 i < mode_page->num_entries;
5583 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
5584 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
5585 dev_err(&ioa_cfg->pdev->dev,
5586 "Invalid resource address reported: 0x%08X\n",
5587 IPR_GET_PHYS_LOC(bus->res_addr));
5588 continue;
5589 }
5590
5591 bus_attr = &ioa_cfg->bus_attr[i];
5592 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
5593 bus->bus_width = bus_attr->bus_width;
5594 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
5595 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
5596 if (bus_attr->qas_enabled)
5597 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
5598 else
5599 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
5600 }
5601 }
5602
5603 /**
5604 * ipr_build_mode_select - Build a mode select command
5605 * @ipr_cmd: ipr command struct
5606 * @res_handle: resource handle to send command to
5607 * @parm: Byte 2 of Mode Sense command
5608 * @dma_addr: DMA buffer address
5609 * @xfer_len: data transfer length
5610 *
5611 * Return value:
5612 * none
5613 **/
5614 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
5615 __be32 res_handle, u8 parm, u32 dma_addr,
5616 u8 xfer_len)
5617 {
5618 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5619 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5620
5621 ioarcb->res_handle = res_handle;
5622 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5623 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5624 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
5625 ioarcb->cmd_pkt.cdb[1] = parm;
5626 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5627
5628 ioadl->flags_and_data_len =
5629 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
5630 ioadl->address = cpu_to_be32(dma_addr);
5631 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5632 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
5633 }
5634
5635 /**
5636 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
5637 * @ipr_cmd: ipr command struct
5638 *
5639 * This function sets up the SCSI bus attributes and sends
5640 * a Mode Select for Page 28 to activate them.
5641 *
5642 * Return value:
5643 * IPR_RC_JOB_RETURN
5644 **/
5645 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
5646 {
5647 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5648 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
5649 int length;
5650
5651 ENTER;
5652 ipr_scsi_bus_speed_limit(ioa_cfg);
5653 ipr_check_term_power(ioa_cfg, mode_pages);
5654 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
5655 length = mode_pages->hdr.length + 1;
5656 mode_pages->hdr.length = 0;
5657
5658 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
5659 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
5660 length);
5661
5662 ipr_cmd->job_step = ipr_setup_write_cache;
5663 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5664
5665 LEAVE;
5666 return IPR_RC_JOB_RETURN;
5667 }
5668
5669 /**
5670 * ipr_build_mode_sense - Builds a mode sense command
5671 * @ipr_cmd: ipr command struct
5672 * @res: resource entry struct
5673 * @parm: Byte 2 of mode sense command
5674 * @dma_addr: DMA address of mode sense buffer
5675 * @xfer_len: Size of DMA buffer
5676 *
5677 * Return value:
5678 * none
5679 **/
5680 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
5681 __be32 res_handle,
5682 u8 parm, u32 dma_addr, u8 xfer_len)
5683 {
5684 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5685 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5686
5687 ioarcb->res_handle = res_handle;
5688 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
5689 ioarcb->cmd_pkt.cdb[2] = parm;
5690 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5691 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5692
5693 ioadl->flags_and_data_len =
5694 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5695 ioadl->address = cpu_to_be32(dma_addr);
5696 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5697 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5698 }
5699
5700 /**
5701 * ipr_reset_cmd_failed - Handle failure of IOA reset command
5702 * @ipr_cmd: ipr command struct
5703 *
5704 * This function handles the failure of an IOA bringup command.
5705 *
5706 * Return value:
5707 * IPR_RC_JOB_RETURN
5708 **/
5709 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
5710 {
5711 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5712 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5713
5714 dev_err(&ioa_cfg->pdev->dev,
5715 "0x%02X failed with IOASC: 0x%08X\n",
5716 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5717
5718 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5719 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5720 return IPR_RC_JOB_RETURN;
5721 }
5722
5723 /**
5724 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
5725 * @ipr_cmd: ipr command struct
5726 *
5727 * This function handles the failure of a Mode Sense to the IOAFP.
5728 * Some adapters do not handle all mode pages.
5729 *
5730 * Return value:
5731 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5732 **/
5733 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
5734 {
5735 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5736
5737 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
5738 ipr_cmd->job_step = ipr_setup_write_cache;
5739 return IPR_RC_JOB_CONTINUE;
5740 }
5741
5742 return ipr_reset_cmd_failed(ipr_cmd);
5743 }
5744
5745 /**
5746 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
5747 * @ipr_cmd: ipr command struct
5748 *
5749 * This function send a Page 28 mode sense to the IOA to
5750 * retrieve SCSI bus attributes.
5751 *
5752 * Return value:
5753 * IPR_RC_JOB_RETURN
5754 **/
5755 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
5756 {
5757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5758
5759 ENTER;
5760 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
5761 0x28, ioa_cfg->vpd_cbs_dma +
5762 offsetof(struct ipr_misc_cbs, mode_pages),
5763 sizeof(struct ipr_mode_pages));
5764
5765 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
5766 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
5767
5768 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5769
5770 LEAVE;
5771 return IPR_RC_JOB_RETURN;
5772 }
5773
5774 /**
5775 * ipr_init_res_table - Initialize the resource table
5776 * @ipr_cmd: ipr command struct
5777 *
5778 * This function looks through the existing resource table, comparing
5779 * it with the config table. This function will take care of old/new
5780 * devices and schedule adding/removing them from the mid-layer
5781 * as appropriate.
5782 *
5783 * Return value:
5784 * IPR_RC_JOB_CONTINUE
5785 **/
5786 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
5787 {
5788 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5789 struct ipr_resource_entry *res, *temp;
5790 struct ipr_config_table_entry *cfgte;
5791 int found, i;
5792 LIST_HEAD(old_res);
5793
5794 ENTER;
5795 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
5796 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
5797
5798 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
5799 list_move_tail(&res->queue, &old_res);
5800
5801 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
5802 cfgte = &ioa_cfg->cfg_table->dev[i];
5803 found = 0;
5804
5805 list_for_each_entry_safe(res, temp, &old_res, queue) {
5806 if (!memcmp(&res->cfgte.res_addr,
5807 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
5808 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5809 found = 1;
5810 break;
5811 }
5812 }
5813
5814 if (!found) {
5815 if (list_empty(&ioa_cfg->free_res_q)) {
5816 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
5817 break;
5818 }
5819
5820 found = 1;
5821 res = list_entry(ioa_cfg->free_res_q.next,
5822 struct ipr_resource_entry, queue);
5823 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5824 ipr_init_res_entry(res);
5825 res->add_to_ml = 1;
5826 }
5827
5828 if (found)
5829 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
5830 }
5831
5832 list_for_each_entry_safe(res, temp, &old_res, queue) {
5833 if (res->sdev) {
5834 res->del_from_ml = 1;
5835 res->cfgte.res_handle = IPR_INVALID_RES_HANDLE;
5836 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
5837 } else {
5838 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
5839 }
5840 }
5841
5842 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
5843
5844 LEAVE;
5845 return IPR_RC_JOB_CONTINUE;
5846 }
5847
5848 /**
5849 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
5850 * @ipr_cmd: ipr command struct
5851 *
5852 * This function sends a Query IOA Configuration command
5853 * to the adapter to retrieve the IOA configuration table.
5854 *
5855 * Return value:
5856 * IPR_RC_JOB_RETURN
5857 **/
5858 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
5859 {
5860 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5861 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5862 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5863 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
5864
5865 ENTER;
5866 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
5867 ucode_vpd->major_release, ucode_vpd->card_type,
5868 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
5869 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5870 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5871
5872 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
5873 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
5874 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
5875
5876 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5877 ioarcb->read_data_transfer_length =
5878 cpu_to_be32(sizeof(struct ipr_config_table));
5879
5880 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
5881 ioadl->flags_and_data_len =
5882 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
5883
5884 ipr_cmd->job_step = ipr_init_res_table;
5885
5886 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5887
5888 LEAVE;
5889 return IPR_RC_JOB_RETURN;
5890 }
5891
5892 /**
5893 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
5894 * @ipr_cmd: ipr command struct
5895 *
5896 * This utility function sends an inquiry to the adapter.
5897 *
5898 * Return value:
5899 * none
5900 **/
5901 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
5902 u32 dma_addr, u8 xfer_len)
5903 {
5904 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5905 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
5906
5907 ENTER;
5908 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5909 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5910
5911 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
5912 ioarcb->cmd_pkt.cdb[1] = flags;
5913 ioarcb->cmd_pkt.cdb[2] = page;
5914 ioarcb->cmd_pkt.cdb[4] = xfer_len;
5915
5916 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
5917 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
5918
5919 ioadl->address = cpu_to_be32(dma_addr);
5920 ioadl->flags_and_data_len =
5921 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
5922
5923 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
5924 LEAVE;
5925 }
5926
5927 /**
5928 * ipr_inquiry_page_supported - Is the given inquiry page supported
5929 * @page0: inquiry page 0 buffer
5930 * @page: page code.
5931 *
5932 * This function determines if the specified inquiry page is supported.
5933 *
5934 * Return value:
5935 * 1 if page is supported / 0 if not
5936 **/
5937 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
5938 {
5939 int i;
5940
5941 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
5942 if (page0->page[i] == page)
5943 return 1;
5944
5945 return 0;
5946 }
5947
5948 /**
5949 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
5950 * @ipr_cmd: ipr command struct
5951 *
5952 * This function sends a Page 3 inquiry to the adapter
5953 * to retrieve software VPD information.
5954 *
5955 * Return value:
5956 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5957 **/
5958 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
5959 {
5960 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5961 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
5962
5963 ENTER;
5964
5965 if (!ipr_inquiry_page_supported(page0, 1))
5966 ioa_cfg->cache_state = CACHE_NONE;
5967
5968 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
5969
5970 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
5971 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
5972 sizeof(struct ipr_inquiry_page3));
5973
5974 LEAVE;
5975 return IPR_RC_JOB_RETURN;
5976 }
5977
5978 /**
5979 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
5980 * @ipr_cmd: ipr command struct
5981 *
5982 * This function sends a Page 0 inquiry to the adapter
5983 * to retrieve supported inquiry pages.
5984 *
5985 * Return value:
5986 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5987 **/
5988 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
5989 {
5990 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5991 char type[5];
5992
5993 ENTER;
5994
5995 /* Grab the type out of the VPD and store it away */
5996 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
5997 type[4] = '\0';
5998 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
5999
6000 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
6001
6002 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
6003 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
6004 sizeof(struct ipr_inquiry_page0));
6005
6006 LEAVE;
6007 return IPR_RC_JOB_RETURN;
6008 }
6009
6010 /**
6011 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
6012 * @ipr_cmd: ipr command struct
6013 *
6014 * This function sends a standard inquiry to the adapter.
6015 *
6016 * Return value:
6017 * IPR_RC_JOB_RETURN
6018 **/
6019 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
6020 {
6021 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6022
6023 ENTER;
6024 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
6025
6026 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
6027 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
6028 sizeof(struct ipr_ioa_vpd));
6029
6030 LEAVE;
6031 return IPR_RC_JOB_RETURN;
6032 }
6033
6034 /**
6035 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
6036 * @ipr_cmd: ipr command struct
6037 *
6038 * This function send an Identify Host Request Response Queue
6039 * command to establish the HRRQ with the adapter.
6040 *
6041 * Return value:
6042 * IPR_RC_JOB_RETURN
6043 **/
6044 static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
6045 {
6046 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6047 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6048
6049 ENTER;
6050 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
6051
6052 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
6053 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6054
6055 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6056 ioarcb->cmd_pkt.cdb[2] =
6057 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
6058 ioarcb->cmd_pkt.cdb[3] =
6059 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
6060 ioarcb->cmd_pkt.cdb[4] =
6061 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
6062 ioarcb->cmd_pkt.cdb[5] =
6063 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
6064 ioarcb->cmd_pkt.cdb[7] =
6065 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
6066 ioarcb->cmd_pkt.cdb[8] =
6067 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
6068
6069 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
6070
6071 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
6072
6073 LEAVE;
6074 return IPR_RC_JOB_RETURN;
6075 }
6076
6077 /**
6078 * ipr_reset_timer_done - Adapter reset timer function
6079 * @ipr_cmd: ipr command struct
6080 *
6081 * Description: This function is used in adapter reset processing
6082 * for timing events. If the reset_cmd pointer in the IOA
6083 * config struct is not this adapter's we are doing nested
6084 * resets and fail_all_ops will take care of freeing the
6085 * command block.
6086 *
6087 * Return value:
6088 * none
6089 **/
6090 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
6091 {
6092 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6093 unsigned long lock_flags = 0;
6094
6095 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6096
6097 if (ioa_cfg->reset_cmd == ipr_cmd) {
6098 list_del(&ipr_cmd->queue);
6099 ipr_cmd->done(ipr_cmd);
6100 }
6101
6102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6103 }
6104
6105 /**
6106 * ipr_reset_start_timer - Start a timer for adapter reset job
6107 * @ipr_cmd: ipr command struct
6108 * @timeout: timeout value
6109 *
6110 * Description: This function is used in adapter reset processing
6111 * for timing events. If the reset_cmd pointer in the IOA
6112 * config struct is not this adapter's we are doing nested
6113 * resets and fail_all_ops will take care of freeing the
6114 * command block.
6115 *
6116 * Return value:
6117 * none
6118 **/
6119 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
6120 unsigned long timeout)
6121 {
6122 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6123 ipr_cmd->done = ipr_reset_ioa_job;
6124
6125 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6126 ipr_cmd->timer.expires = jiffies + timeout;
6127 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
6128 add_timer(&ipr_cmd->timer);
6129 }
6130
6131 /**
6132 * ipr_init_ioa_mem - Initialize ioa_cfg control block
6133 * @ioa_cfg: ioa cfg struct
6134 *
6135 * Return value:
6136 * nothing
6137 **/
6138 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
6139 {
6140 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
6141
6142 /* Initialize Host RRQ pointers */
6143 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
6144 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
6145 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
6146 ioa_cfg->toggle_bit = 1;
6147
6148 /* Zero out config table */
6149 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
6150 }
6151
6152 /**
6153 * ipr_reset_enable_ioa - Enable the IOA following a reset.
6154 * @ipr_cmd: ipr command struct
6155 *
6156 * This function reinitializes some control blocks and
6157 * enables destructive diagnostics on the adapter.
6158 *
6159 * Return value:
6160 * IPR_RC_JOB_RETURN
6161 **/
6162 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
6163 {
6164 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6165 volatile u32 int_reg;
6166
6167 ENTER;
6168 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
6169 ipr_init_ioa_mem(ioa_cfg);
6170
6171 ioa_cfg->allow_interrupts = 1;
6172 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6173
6174 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
6175 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
6176 ioa_cfg->regs.clr_interrupt_mask_reg);
6177 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6178 return IPR_RC_JOB_CONTINUE;
6179 }
6180
6181 /* Enable destructive diagnostics on IOA */
6182 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg);
6183
6184 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
6185 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
6186
6187 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
6188
6189 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
6190 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
6191 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
6192 ipr_cmd->done = ipr_reset_ioa_job;
6193 add_timer(&ipr_cmd->timer);
6194 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
6195
6196 LEAVE;
6197 return IPR_RC_JOB_RETURN;
6198 }
6199
6200 /**
6201 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
6202 * @ipr_cmd: ipr command struct
6203 *
6204 * This function is invoked when an adapter dump has run out
6205 * of processing time.
6206 *
6207 * Return value:
6208 * IPR_RC_JOB_CONTINUE
6209 **/
6210 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
6211 {
6212 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6213
6214 if (ioa_cfg->sdt_state == GET_DUMP)
6215 ioa_cfg->sdt_state = ABORT_DUMP;
6216
6217 ipr_cmd->job_step = ipr_reset_alert;
6218
6219 return IPR_RC_JOB_CONTINUE;
6220 }
6221
6222 /**
6223 * ipr_unit_check_no_data - Log a unit check/no data error log
6224 * @ioa_cfg: ioa config struct
6225 *
6226 * Logs an error indicating the adapter unit checked, but for some
6227 * reason, we were unable to fetch the unit check buffer.
6228 *
6229 * Return value:
6230 * nothing
6231 **/
6232 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
6233 {
6234 ioa_cfg->errors_logged++;
6235 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
6236 }
6237
6238 /**
6239 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
6240 * @ioa_cfg: ioa config struct
6241 *
6242 * Fetches the unit check buffer from the adapter by clocking the data
6243 * through the mailbox register.
6244 *
6245 * Return value:
6246 * nothing
6247 **/
6248 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
6249 {
6250 unsigned long mailbox;
6251 struct ipr_hostrcb *hostrcb;
6252 struct ipr_uc_sdt sdt;
6253 int rc, length;
6254
6255 mailbox = readl(ioa_cfg->ioa_mailbox);
6256
6257 if (!ipr_sdt_is_fmt2(mailbox)) {
6258 ipr_unit_check_no_data(ioa_cfg);
6259 return;
6260 }
6261
6262 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
6263 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
6264 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
6265
6266 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
6267 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
6268 ipr_unit_check_no_data(ioa_cfg);
6269 return;
6270 }
6271
6272 /* Find length of the first sdt entry (UC buffer) */
6273 length = (be32_to_cpu(sdt.entry[0].end_offset) -
6274 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
6275
6276 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
6277 struct ipr_hostrcb, queue);
6278 list_del(&hostrcb->queue);
6279 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
6280
6281 rc = ipr_get_ldump_data_section(ioa_cfg,
6282 be32_to_cpu(sdt.entry[0].bar_str_offset),
6283 (__be32 *)&hostrcb->hcam,
6284 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
6285
6286 if (!rc)
6287 ipr_handle_log_data(ioa_cfg, hostrcb);
6288 else
6289 ipr_unit_check_no_data(ioa_cfg);
6290
6291 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
6292 }
6293
6294 /**
6295 * ipr_reset_restore_cfg_space - Restore PCI config space.
6296 * @ipr_cmd: ipr command struct
6297 *
6298 * Description: This function restores the saved PCI config space of
6299 * the adapter, fails all outstanding ops back to the callers, and
6300 * fetches the dump/unit check if applicable to this reset.
6301 *
6302 * Return value:
6303 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6304 **/
6305 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
6306 {
6307 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6308 int rc;
6309
6310 ENTER;
6311 rc = pci_restore_state(ioa_cfg->pdev);
6312
6313 if (rc != PCIBIOS_SUCCESSFUL) {
6314 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6315 return IPR_RC_JOB_CONTINUE;
6316 }
6317
6318 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
6319 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6320 return IPR_RC_JOB_CONTINUE;
6321 }
6322
6323 ipr_fail_all_ops(ioa_cfg);
6324
6325 if (ioa_cfg->ioa_unit_checked) {
6326 ioa_cfg->ioa_unit_checked = 0;
6327 ipr_get_unit_check_buffer(ioa_cfg);
6328 ipr_cmd->job_step = ipr_reset_alert;
6329 ipr_reset_start_timer(ipr_cmd, 0);
6330 return IPR_RC_JOB_RETURN;
6331 }
6332
6333 if (ioa_cfg->in_ioa_bringdown) {
6334 ipr_cmd->job_step = ipr_ioa_bringdown_done;
6335 } else {
6336 ipr_cmd->job_step = ipr_reset_enable_ioa;
6337
6338 if (GET_DUMP == ioa_cfg->sdt_state) {
6339 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
6340 ipr_cmd->job_step = ipr_reset_wait_for_dump;
6341 schedule_work(&ioa_cfg->work_q);
6342 return IPR_RC_JOB_RETURN;
6343 }
6344 }
6345
6346 ENTER;
6347 return IPR_RC_JOB_CONTINUE;
6348 }
6349
6350 /**
6351 * ipr_reset_bist_done - BIST has completed on the adapter.
6352 * @ipr_cmd: ipr command struct
6353 *
6354 * Description: Unblock config space and resume the reset process.
6355 *
6356 * Return value:
6357 * IPR_RC_JOB_CONTINUE
6358 **/
6359 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
6360 {
6361 ENTER;
6362 pci_unblock_user_cfg_access(ipr_cmd->ioa_cfg->pdev);
6363 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
6364 LEAVE;
6365 return IPR_RC_JOB_CONTINUE;
6366 }
6367
6368 /**
6369 * ipr_reset_start_bist - Run BIST on the adapter.
6370 * @ipr_cmd: ipr command struct
6371 *
6372 * Description: This function runs BIST on the adapter, then delays 2 seconds.
6373 *
6374 * Return value:
6375 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6376 **/
6377 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
6378 {
6379 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6380 int rc;
6381
6382 ENTER;
6383 pci_block_user_cfg_access(ioa_cfg->pdev);
6384 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
6385
6386 if (rc != PCIBIOS_SUCCESSFUL) {
6387 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
6388 rc = IPR_RC_JOB_CONTINUE;
6389 } else {
6390 ipr_cmd->job_step = ipr_reset_bist_done;
6391 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
6392 rc = IPR_RC_JOB_RETURN;
6393 }
6394
6395 LEAVE;
6396 return rc;
6397 }
6398
6399 /**
6400 * ipr_reset_allowed - Query whether or not IOA can be reset
6401 * @ioa_cfg: ioa config struct
6402 *
6403 * Return value:
6404 * 0 if reset not allowed / non-zero if reset is allowed
6405 **/
6406 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
6407 {
6408 volatile u32 temp_reg;
6409
6410 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
6411 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
6412 }
6413
6414 /**
6415 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
6416 * @ipr_cmd: ipr command struct
6417 *
6418 * Description: This function waits for adapter permission to run BIST,
6419 * then runs BIST. If the adapter does not give permission after a
6420 * reasonable time, we will reset the adapter anyway. The impact of
6421 * resetting the adapter without warning the adapter is the risk of
6422 * losing the persistent error log on the adapter. If the adapter is
6423 * reset while it is writing to the flash on the adapter, the flash
6424 * segment will have bad ECC and be zeroed.
6425 *
6426 * Return value:
6427 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6428 **/
6429 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
6430 {
6431 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6432 int rc = IPR_RC_JOB_RETURN;
6433
6434 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
6435 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
6436 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6437 } else {
6438 ipr_cmd->job_step = ipr_reset_start_bist;
6439 rc = IPR_RC_JOB_CONTINUE;
6440 }
6441
6442 return rc;
6443 }
6444
6445 /**
6446 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
6447 * @ipr_cmd: ipr command struct
6448 *
6449 * Description: This function alerts the adapter that it will be reset.
6450 * If memory space is not currently enabled, proceed directly
6451 * to running BIST on the adapter. The timer must always be started
6452 * so we guarantee we do not run BIST from ipr_isr.
6453 *
6454 * Return value:
6455 * IPR_RC_JOB_RETURN
6456 **/
6457 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
6458 {
6459 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6460 u16 cmd_reg;
6461 int rc;
6462
6463 ENTER;
6464 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
6465
6466 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
6467 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
6468 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
6469 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
6470 } else {
6471 ipr_cmd->job_step = ipr_reset_start_bist;
6472 }
6473
6474 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
6475 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
6476
6477 LEAVE;
6478 return IPR_RC_JOB_RETURN;
6479 }
6480
6481 /**
6482 * ipr_reset_ucode_download_done - Microcode download completion
6483 * @ipr_cmd: ipr command struct
6484 *
6485 * Description: This function unmaps the microcode download buffer.
6486 *
6487 * Return value:
6488 * IPR_RC_JOB_CONTINUE
6489 **/
6490 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
6491 {
6492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6493 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6494
6495 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
6496 sglist->num_sg, DMA_TO_DEVICE);
6497
6498 ipr_cmd->job_step = ipr_reset_alert;
6499 return IPR_RC_JOB_CONTINUE;
6500 }
6501
6502 /**
6503 * ipr_reset_ucode_download - Download microcode to the adapter
6504 * @ipr_cmd: ipr command struct
6505 *
6506 * Description: This function checks to see if it there is microcode
6507 * to download to the adapter. If there is, a download is performed.
6508 *
6509 * Return value:
6510 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6511 **/
6512 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
6513 {
6514 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6515 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
6516
6517 ENTER;
6518 ipr_cmd->job_step = ipr_reset_alert;
6519
6520 if (!sglist)
6521 return IPR_RC_JOB_CONTINUE;
6522
6523 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6524 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
6525 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
6526 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
6527 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
6528 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
6529 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
6530
6531 ipr_build_ucode_ioadl(ipr_cmd, sglist);
6532 ipr_cmd->job_step = ipr_reset_ucode_download_done;
6533
6534 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6535 IPR_WRITE_BUFFER_TIMEOUT);
6536
6537 LEAVE;
6538 return IPR_RC_JOB_RETURN;
6539 }
6540
6541 /**
6542 * ipr_reset_shutdown_ioa - Shutdown the adapter
6543 * @ipr_cmd: ipr command struct
6544 *
6545 * Description: This function issues an adapter shutdown of the
6546 * specified type to the specified adapter as part of the
6547 * adapter reset job.
6548 *
6549 * Return value:
6550 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6551 **/
6552 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
6553 {
6554 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6555 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
6556 unsigned long timeout;
6557 int rc = IPR_RC_JOB_CONTINUE;
6558
6559 ENTER;
6560 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
6561 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6562 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6563 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
6564 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
6565
6566 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
6567 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
6568 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
6569 timeout = IPR_INTERNAL_TIMEOUT;
6570 else
6571 timeout = IPR_SHUTDOWN_TIMEOUT;
6572
6573 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
6574
6575 rc = IPR_RC_JOB_RETURN;
6576 ipr_cmd->job_step = ipr_reset_ucode_download;
6577 } else
6578 ipr_cmd->job_step = ipr_reset_alert;
6579
6580 LEAVE;
6581 return rc;
6582 }
6583
6584 /**
6585 * ipr_reset_ioa_job - Adapter reset job
6586 * @ipr_cmd: ipr command struct
6587 *
6588 * Description: This function is the job router for the adapter reset job.
6589 *
6590 * Return value:
6591 * none
6592 **/
6593 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
6594 {
6595 u32 rc, ioasc;
6596 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6597
6598 do {
6599 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
6600
6601 if (ioa_cfg->reset_cmd != ipr_cmd) {
6602 /*
6603 * We are doing nested adapter resets and this is
6604 * not the current reset job.
6605 */
6606 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6607 return;
6608 }
6609
6610 if (IPR_IOASC_SENSE_KEY(ioasc)) {
6611 rc = ipr_cmd->job_step_failed(ipr_cmd);
6612 if (rc == IPR_RC_JOB_RETURN)
6613 return;
6614 }
6615
6616 ipr_reinit_ipr_cmnd(ipr_cmd);
6617 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
6618 rc = ipr_cmd->job_step(ipr_cmd);
6619 } while(rc == IPR_RC_JOB_CONTINUE);
6620 }
6621
6622 /**
6623 * _ipr_initiate_ioa_reset - Initiate an adapter reset
6624 * @ioa_cfg: ioa config struct
6625 * @job_step: first job step of reset job
6626 * @shutdown_type: shutdown type
6627 *
6628 * Description: This function will initiate the reset of the given adapter
6629 * starting at the selected job step.
6630 * If the caller needs to wait on the completion of the reset,
6631 * the caller must sleep on the reset_wait_q.
6632 *
6633 * Return value:
6634 * none
6635 **/
6636 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6637 int (*job_step) (struct ipr_cmnd *),
6638 enum ipr_shutdown_type shutdown_type)
6639 {
6640 struct ipr_cmnd *ipr_cmd;
6641
6642 ioa_cfg->in_reset_reload = 1;
6643 ioa_cfg->allow_cmds = 0;
6644 scsi_block_requests(ioa_cfg->host);
6645
6646 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
6647 ioa_cfg->reset_cmd = ipr_cmd;
6648 ipr_cmd->job_step = job_step;
6649 ipr_cmd->u.shutdown_type = shutdown_type;
6650
6651 ipr_reset_ioa_job(ipr_cmd);
6652 }
6653
6654 /**
6655 * ipr_initiate_ioa_reset - Initiate an adapter reset
6656 * @ioa_cfg: ioa config struct
6657 * @shutdown_type: shutdown type
6658 *
6659 * Description: This function will initiate the reset of the given adapter.
6660 * If the caller needs to wait on the completion of the reset,
6661 * the caller must sleep on the reset_wait_q.
6662 *
6663 * Return value:
6664 * none
6665 **/
6666 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
6667 enum ipr_shutdown_type shutdown_type)
6668 {
6669 if (ioa_cfg->ioa_is_dead)
6670 return;
6671
6672 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
6673 ioa_cfg->sdt_state = ABORT_DUMP;
6674
6675 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
6676 dev_err(&ioa_cfg->pdev->dev,
6677 "IOA taken offline - error recovery failed\n");
6678
6679 ioa_cfg->reset_retries = 0;
6680 ioa_cfg->ioa_is_dead = 1;
6681
6682 if (ioa_cfg->in_ioa_bringdown) {
6683 ioa_cfg->reset_cmd = NULL;
6684 ioa_cfg->in_reset_reload = 0;
6685 ipr_fail_all_ops(ioa_cfg);
6686 wake_up_all(&ioa_cfg->reset_wait_q);
6687
6688 spin_unlock_irq(ioa_cfg->host->host_lock);
6689 scsi_unblock_requests(ioa_cfg->host);
6690 spin_lock_irq(ioa_cfg->host->host_lock);
6691 return;
6692 } else {
6693 ioa_cfg->in_ioa_bringdown = 1;
6694 shutdown_type = IPR_SHUTDOWN_NONE;
6695 }
6696 }
6697
6698 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
6699 shutdown_type);
6700 }
6701
6702 /**
6703 * ipr_reset_freeze - Hold off all I/O activity
6704 * @ipr_cmd: ipr command struct
6705 *
6706 * Description: If the PCI slot is frozen, hold off all I/O
6707 * activity; then, as soon as the slot is available again,
6708 * initiate an adapter reset.
6709 */
6710 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
6711 {
6712 /* Disallow new interrupts, avoid loop */
6713 ipr_cmd->ioa_cfg->allow_interrupts = 0;
6714 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
6715 ipr_cmd->done = ipr_reset_ioa_job;
6716 return IPR_RC_JOB_RETURN;
6717 }
6718
6719 /**
6720 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
6721 * @pdev: PCI device struct
6722 *
6723 * Description: This routine is called to tell us that the PCI bus
6724 * is down. Can't do anything here, except put the device driver
6725 * into a holding pattern, waiting for the PCI bus to come back.
6726 */
6727 static void ipr_pci_frozen(struct pci_dev *pdev)
6728 {
6729 unsigned long flags = 0;
6730 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6731
6732 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6733 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
6734 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6735 }
6736
6737 /**
6738 * ipr_pci_slot_reset - Called when PCI slot has been reset.
6739 * @pdev: PCI device struct
6740 *
6741 * Description: This routine is called by the pci error recovery
6742 * code after the PCI slot has been reset, just before we
6743 * should resume normal operations.
6744 */
6745 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
6746 {
6747 unsigned long flags = 0;
6748 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6749
6750 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6751 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
6752 IPR_SHUTDOWN_NONE);
6753 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6754 return PCI_ERS_RESULT_RECOVERED;
6755 }
6756
6757 /**
6758 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
6759 * @pdev: PCI device struct
6760 *
6761 * Description: This routine is called when the PCI bus has
6762 * permanently failed.
6763 */
6764 static void ipr_pci_perm_failure(struct pci_dev *pdev)
6765 {
6766 unsigned long flags = 0;
6767 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
6768
6769 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6770 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
6771 ioa_cfg->sdt_state = ABORT_DUMP;
6772 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
6773 ioa_cfg->in_ioa_bringdown = 1;
6774 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6775 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6776 }
6777
6778 /**
6779 * ipr_pci_error_detected - Called when a PCI error is detected.
6780 * @pdev: PCI device struct
6781 * @state: PCI channel state
6782 *
6783 * Description: Called when a PCI error is detected.
6784 *
6785 * Return value:
6786 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
6787 */
6788 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
6789 pci_channel_state_t state)
6790 {
6791 switch (state) {
6792 case pci_channel_io_frozen:
6793 ipr_pci_frozen(pdev);
6794 return PCI_ERS_RESULT_NEED_RESET;
6795 case pci_channel_io_perm_failure:
6796 ipr_pci_perm_failure(pdev);
6797 return PCI_ERS_RESULT_DISCONNECT;
6798 break;
6799 default:
6800 break;
6801 }
6802 return PCI_ERS_RESULT_NEED_RESET;
6803 }
6804
6805 /**
6806 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
6807 * @ioa_cfg: ioa cfg struct
6808 *
6809 * Description: This is the second phase of adapter intialization
6810 * This function takes care of initilizing the adapter to the point
6811 * where it can accept new commands.
6812
6813 * Return value:
6814 * 0 on sucess / -EIO on failure
6815 **/
6816 static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
6817 {
6818 int rc = 0;
6819 unsigned long host_lock_flags = 0;
6820
6821 ENTER;
6822 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6823 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
6824 if (ioa_cfg->needs_hard_reset) {
6825 ioa_cfg->needs_hard_reset = 0;
6826 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
6827 } else
6828 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
6829 IPR_SHUTDOWN_NONE);
6830
6831 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6832 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6833 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
6834
6835 if (ioa_cfg->ioa_is_dead) {
6836 rc = -EIO;
6837 } else if (ipr_invalid_adapter(ioa_cfg)) {
6838 if (!ipr_testmode)
6839 rc = -EIO;
6840
6841 dev_err(&ioa_cfg->pdev->dev,
6842 "Adapter not supported in this hardware configuration.\n");
6843 }
6844
6845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
6846
6847 LEAVE;
6848 return rc;
6849 }
6850
6851 /**
6852 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
6853 * @ioa_cfg: ioa config struct
6854 *
6855 * Return value:
6856 * none
6857 **/
6858 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6859 {
6860 int i;
6861
6862 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6863 if (ioa_cfg->ipr_cmnd_list[i])
6864 pci_pool_free(ioa_cfg->ipr_cmd_pool,
6865 ioa_cfg->ipr_cmnd_list[i],
6866 ioa_cfg->ipr_cmnd_list_dma[i]);
6867
6868 ioa_cfg->ipr_cmnd_list[i] = NULL;
6869 }
6870
6871 if (ioa_cfg->ipr_cmd_pool)
6872 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
6873
6874 ioa_cfg->ipr_cmd_pool = NULL;
6875 }
6876
6877 /**
6878 * ipr_free_mem - Frees memory allocated for an adapter
6879 * @ioa_cfg: ioa cfg struct
6880 *
6881 * Return value:
6882 * nothing
6883 **/
6884 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
6885 {
6886 int i;
6887
6888 kfree(ioa_cfg->res_entries);
6889 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
6890 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
6891 ipr_free_cmd_blks(ioa_cfg);
6892 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
6893 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
6894 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
6895 ioa_cfg->cfg_table,
6896 ioa_cfg->cfg_table_dma);
6897
6898 for (i = 0; i < IPR_NUM_HCAMS; i++) {
6899 pci_free_consistent(ioa_cfg->pdev,
6900 sizeof(struct ipr_hostrcb),
6901 ioa_cfg->hostrcb[i],
6902 ioa_cfg->hostrcb_dma[i]);
6903 }
6904
6905 ipr_free_dump(ioa_cfg);
6906 kfree(ioa_cfg->trace);
6907 }
6908
6909 /**
6910 * ipr_free_all_resources - Free all allocated resources for an adapter.
6911 * @ipr_cmd: ipr command struct
6912 *
6913 * This function frees all allocated resources for the
6914 * specified adapter.
6915 *
6916 * Return value:
6917 * none
6918 **/
6919 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
6920 {
6921 struct pci_dev *pdev = ioa_cfg->pdev;
6922
6923 ENTER;
6924 free_irq(pdev->irq, ioa_cfg);
6925 iounmap(ioa_cfg->hdw_dma_regs);
6926 pci_release_regions(pdev);
6927 ipr_free_mem(ioa_cfg);
6928 scsi_host_put(ioa_cfg->host);
6929 pci_disable_device(pdev);
6930 LEAVE;
6931 }
6932
6933 /**
6934 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
6935 * @ioa_cfg: ioa config struct
6936 *
6937 * Return value:
6938 * 0 on success / -ENOMEM on allocation failure
6939 **/
6940 static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
6941 {
6942 struct ipr_cmnd *ipr_cmd;
6943 struct ipr_ioarcb *ioarcb;
6944 dma_addr_t dma_addr;
6945 int i;
6946
6947 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
6948 sizeof(struct ipr_cmnd), 8, 0);
6949
6950 if (!ioa_cfg->ipr_cmd_pool)
6951 return -ENOMEM;
6952
6953 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
6954 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
6955
6956 if (!ipr_cmd) {
6957 ipr_free_cmd_blks(ioa_cfg);
6958 return -ENOMEM;
6959 }
6960
6961 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
6962 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
6963 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
6964
6965 ioarcb = &ipr_cmd->ioarcb;
6966 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
6967 ioarcb->host_response_handle = cpu_to_be32(i << 2);
6968 ioarcb->write_ioadl_addr =
6969 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
6970 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6971 ioarcb->ioasa_host_pci_addr =
6972 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
6973 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
6974 ipr_cmd->cmd_index = i;
6975 ipr_cmd->ioa_cfg = ioa_cfg;
6976 ipr_cmd->sense_buffer_dma = dma_addr +
6977 offsetof(struct ipr_cmnd, sense_buffer);
6978
6979 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
6980 }
6981
6982 return 0;
6983 }
6984
6985 /**
6986 * ipr_alloc_mem - Allocate memory for an adapter
6987 * @ioa_cfg: ioa config struct
6988 *
6989 * Return value:
6990 * 0 on success / non-zero for error
6991 **/
6992 static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
6993 {
6994 struct pci_dev *pdev = ioa_cfg->pdev;
6995 int i, rc = -ENOMEM;
6996
6997 ENTER;
6998 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
6999 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
7000
7001 if (!ioa_cfg->res_entries)
7002 goto out;
7003
7004 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
7005 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
7006
7007 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
7008 sizeof(struct ipr_misc_cbs),
7009 &ioa_cfg->vpd_cbs_dma);
7010
7011 if (!ioa_cfg->vpd_cbs)
7012 goto out_free_res_entries;
7013
7014 if (ipr_alloc_cmd_blks(ioa_cfg))
7015 goto out_free_vpd_cbs;
7016
7017 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
7018 sizeof(u32) * IPR_NUM_CMD_BLKS,
7019 &ioa_cfg->host_rrq_dma);
7020
7021 if (!ioa_cfg->host_rrq)
7022 goto out_ipr_free_cmd_blocks;
7023
7024 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
7025 sizeof(struct ipr_config_table),
7026 &ioa_cfg->cfg_table_dma);
7027
7028 if (!ioa_cfg->cfg_table)
7029 goto out_free_host_rrq;
7030
7031 for (i = 0; i < IPR_NUM_HCAMS; i++) {
7032 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
7033 sizeof(struct ipr_hostrcb),
7034 &ioa_cfg->hostrcb_dma[i]);
7035
7036 if (!ioa_cfg->hostrcb[i])
7037 goto out_free_hostrcb_dma;
7038
7039 ioa_cfg->hostrcb[i]->hostrcb_dma =
7040 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
7041 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
7042 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
7043 }
7044
7045 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
7046 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
7047
7048 if (!ioa_cfg->trace)
7049 goto out_free_hostrcb_dma;
7050
7051 rc = 0;
7052 out:
7053 LEAVE;
7054 return rc;
7055
7056 out_free_hostrcb_dma:
7057 while (i-- > 0) {
7058 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
7059 ioa_cfg->hostrcb[i],
7060 ioa_cfg->hostrcb_dma[i]);
7061 }
7062 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
7063 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
7064 out_free_host_rrq:
7065 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
7066 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
7067 out_ipr_free_cmd_blocks:
7068 ipr_free_cmd_blks(ioa_cfg);
7069 out_free_vpd_cbs:
7070 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
7071 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
7072 out_free_res_entries:
7073 kfree(ioa_cfg->res_entries);
7074 goto out;
7075 }
7076
7077 /**
7078 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
7079 * @ioa_cfg: ioa config struct
7080 *
7081 * Return value:
7082 * none
7083 **/
7084 static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
7085 {
7086 int i;
7087
7088 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7089 ioa_cfg->bus_attr[i].bus = i;
7090 ioa_cfg->bus_attr[i].qas_enabled = 0;
7091 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
7092 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
7093 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
7094 else
7095 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
7096 }
7097 }
7098
7099 /**
7100 * ipr_init_ioa_cfg - Initialize IOA config struct
7101 * @ioa_cfg: ioa config struct
7102 * @host: scsi host struct
7103 * @pdev: PCI dev struct
7104 *
7105 * Return value:
7106 * none
7107 **/
7108 static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
7109 struct Scsi_Host *host, struct pci_dev *pdev)
7110 {
7111 const struct ipr_interrupt_offsets *p;
7112 struct ipr_interrupts *t;
7113 void __iomem *base;
7114
7115 ioa_cfg->host = host;
7116 ioa_cfg->pdev = pdev;
7117 ioa_cfg->log_level = ipr_log_level;
7118 ioa_cfg->doorbell = IPR_DOORBELL;
7119 if (!ipr_auto_create)
7120 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7121 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
7122 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
7123 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
7124 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
7125 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
7126 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
7127 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
7128 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
7129
7130 INIT_LIST_HEAD(&ioa_cfg->free_q);
7131 INIT_LIST_HEAD(&ioa_cfg->pending_q);
7132 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
7133 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
7134 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
7135 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
7136 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
7137 init_waitqueue_head(&ioa_cfg->reset_wait_q);
7138 ioa_cfg->sdt_state = INACTIVE;
7139 if (ipr_enable_cache)
7140 ioa_cfg->cache_state = CACHE_ENABLED;
7141 else
7142 ioa_cfg->cache_state = CACHE_DISABLED;
7143
7144 ipr_initialize_bus_attr(ioa_cfg);
7145
7146 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
7147 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
7148 host->max_channel = IPR_MAX_BUS_TO_SCAN;
7149 host->unique_id = host->host_no;
7150 host->max_cmd_len = IPR_MAX_CDB_LEN;
7151 pci_set_drvdata(pdev, ioa_cfg);
7152
7153 p = &ioa_cfg->chip_cfg->regs;
7154 t = &ioa_cfg->regs;
7155 base = ioa_cfg->hdw_dma_regs;
7156
7157 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
7158 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
7159 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
7160 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
7161 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
7162 t->ioarrin_reg = base + p->ioarrin_reg;
7163 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
7164 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
7165 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
7166 }
7167
7168 /**
7169 * ipr_get_chip_cfg - Find adapter chip configuration
7170 * @dev_id: PCI device id struct
7171 *
7172 * Return value:
7173 * ptr to chip config on success / NULL on failure
7174 **/
7175 static const struct ipr_chip_cfg_t * __devinit
7176 ipr_get_chip_cfg(const struct pci_device_id *dev_id)
7177 {
7178 int i;
7179
7180 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
7181 if (ipr_chip[i].vendor == dev_id->vendor &&
7182 ipr_chip[i].device == dev_id->device)
7183 return ipr_chip[i].cfg;
7184 return NULL;
7185 }
7186
7187 /**
7188 * ipr_probe_ioa - Allocates memory and does first stage of initialization
7189 * @pdev: PCI device struct
7190 * @dev_id: PCI device id struct
7191 *
7192 * Return value:
7193 * 0 on success / non-zero on failure
7194 **/
7195 static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
7196 const struct pci_device_id *dev_id)
7197 {
7198 struct ipr_ioa_cfg *ioa_cfg;
7199 struct Scsi_Host *host;
7200 unsigned long ipr_regs_pci;
7201 void __iomem *ipr_regs;
7202 int rc = PCIBIOS_SUCCESSFUL;
7203 volatile u32 mask, uproc;
7204
7205 ENTER;
7206
7207 if ((rc = pci_enable_device(pdev))) {
7208 dev_err(&pdev->dev, "Cannot enable adapter\n");
7209 goto out;
7210 }
7211
7212 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
7213
7214 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
7215
7216 if (!host) {
7217 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
7218 rc = -ENOMEM;
7219 goto out_disable;
7220 }
7221
7222 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
7223 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
7224 ata_host_init(&ioa_cfg->ata_host, &pdev->dev,
7225 sata_port_info.flags, &ipr_sata_ops);
7226
7227 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
7228
7229 if (!ioa_cfg->chip_cfg) {
7230 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
7231 dev_id->vendor, dev_id->device);
7232 goto out_scsi_host_put;
7233 }
7234
7235 ipr_regs_pci = pci_resource_start(pdev, 0);
7236
7237 rc = pci_request_regions(pdev, IPR_NAME);
7238 if (rc < 0) {
7239 dev_err(&pdev->dev,
7240 "Couldn't register memory range of registers\n");
7241 goto out_scsi_host_put;
7242 }
7243
7244 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
7245
7246 if (!ipr_regs) {
7247 dev_err(&pdev->dev,
7248 "Couldn't map memory range of registers\n");
7249 rc = -ENOMEM;
7250 goto out_release_regions;
7251 }
7252
7253 ioa_cfg->hdw_dma_regs = ipr_regs;
7254 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
7255 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
7256
7257 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
7258
7259 pci_set_master(pdev);
7260
7261 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
7262 if (rc < 0) {
7263 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
7264 goto cleanup_nomem;
7265 }
7266
7267 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
7268 ioa_cfg->chip_cfg->cache_line_size);
7269
7270 if (rc != PCIBIOS_SUCCESSFUL) {
7271 dev_err(&pdev->dev, "Write of cache line size failed\n");
7272 rc = -EIO;
7273 goto cleanup_nomem;
7274 }
7275
7276 /* Save away PCI config space for use following IOA reset */
7277 rc = pci_save_state(pdev);
7278
7279 if (rc != PCIBIOS_SUCCESSFUL) {
7280 dev_err(&pdev->dev, "Failed to save PCI config space\n");
7281 rc = -EIO;
7282 goto cleanup_nomem;
7283 }
7284
7285 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
7286 goto cleanup_nomem;
7287
7288 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
7289 goto cleanup_nomem;
7290
7291 rc = ipr_alloc_mem(ioa_cfg);
7292 if (rc < 0) {
7293 dev_err(&pdev->dev,
7294 "Couldn't allocate enough memory for device driver!\n");
7295 goto cleanup_nomem;
7296 }
7297
7298 /*
7299 * If HRRQ updated interrupt is not masked, or reset alert is set,
7300 * the card is in an unknown state and needs a hard reset
7301 */
7302 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7303 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
7304 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
7305 ioa_cfg->needs_hard_reset = 1;
7306
7307 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
7308 rc = request_irq(pdev->irq, ipr_isr, IRQF_SHARED, IPR_NAME, ioa_cfg);
7309
7310 if (rc) {
7311 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
7312 pdev->irq, rc);
7313 goto cleanup_nolog;
7314 }
7315
7316 spin_lock(&ipr_driver_lock);
7317 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
7318 spin_unlock(&ipr_driver_lock);
7319
7320 LEAVE;
7321 out:
7322 return rc;
7323
7324 cleanup_nolog:
7325 ipr_free_mem(ioa_cfg);
7326 cleanup_nomem:
7327 iounmap(ipr_regs);
7328 out_release_regions:
7329 pci_release_regions(pdev);
7330 out_scsi_host_put:
7331 scsi_host_put(host);
7332 out_disable:
7333 pci_disable_device(pdev);
7334 goto out;
7335 }
7336
7337 /**
7338 * ipr_scan_vsets - Scans for VSET devices
7339 * @ioa_cfg: ioa config struct
7340 *
7341 * Description: Since the VSET resources do not follow SAM in that we can have
7342 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
7343 *
7344 * Return value:
7345 * none
7346 **/
7347 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
7348 {
7349 int target, lun;
7350
7351 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
7352 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
7353 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
7354 }
7355
7356 /**
7357 * ipr_initiate_ioa_bringdown - Bring down an adapter
7358 * @ioa_cfg: ioa config struct
7359 * @shutdown_type: shutdown type
7360 *
7361 * Description: This function will initiate bringing down the adapter.
7362 * This consists of issuing an IOA shutdown to the adapter
7363 * to flush the cache, and running BIST.
7364 * If the caller needs to wait on the completion of the reset,
7365 * the caller must sleep on the reset_wait_q.
7366 *
7367 * Return value:
7368 * none
7369 **/
7370 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
7371 enum ipr_shutdown_type shutdown_type)
7372 {
7373 ENTER;
7374 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
7375 ioa_cfg->sdt_state = ABORT_DUMP;
7376 ioa_cfg->reset_retries = 0;
7377 ioa_cfg->in_ioa_bringdown = 1;
7378 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
7379 LEAVE;
7380 }
7381
7382 /**
7383 * __ipr_remove - Remove a single adapter
7384 * @pdev: pci device struct
7385 *
7386 * Adapter hot plug remove entry point.
7387 *
7388 * Return value:
7389 * none
7390 **/
7391 static void __ipr_remove(struct pci_dev *pdev)
7392 {
7393 unsigned long host_lock_flags = 0;
7394 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7395 ENTER;
7396
7397 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7398 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7399
7400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7401 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7402 flush_scheduled_work();
7403 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
7404
7405 spin_lock(&ipr_driver_lock);
7406 list_del(&ioa_cfg->queue);
7407 spin_unlock(&ipr_driver_lock);
7408
7409 if (ioa_cfg->sdt_state == ABORT_DUMP)
7410 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
7412
7413 ipr_free_all_resources(ioa_cfg);
7414
7415 LEAVE;
7416 }
7417
7418 /**
7419 * ipr_remove - IOA hot plug remove entry point
7420 * @pdev: pci device struct
7421 *
7422 * Adapter hot plug remove entry point.
7423 *
7424 * Return value:
7425 * none
7426 **/
7427 static void ipr_remove(struct pci_dev *pdev)
7428 {
7429 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7430
7431 ENTER;
7432
7433 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7434 &ipr_trace_attr);
7435 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7436 &ipr_dump_attr);
7437 scsi_remove_host(ioa_cfg->host);
7438
7439 __ipr_remove(pdev);
7440
7441 LEAVE;
7442 }
7443
7444 /**
7445 * ipr_probe - Adapter hot plug add entry point
7446 *
7447 * Return value:
7448 * 0 on success / non-zero on failure
7449 **/
7450 static int __devinit ipr_probe(struct pci_dev *pdev,
7451 const struct pci_device_id *dev_id)
7452 {
7453 struct ipr_ioa_cfg *ioa_cfg;
7454 int rc;
7455
7456 rc = ipr_probe_ioa(pdev, dev_id);
7457
7458 if (rc)
7459 return rc;
7460
7461 ioa_cfg = pci_get_drvdata(pdev);
7462 rc = ipr_probe_ioa_part2(ioa_cfg);
7463
7464 if (rc) {
7465 __ipr_remove(pdev);
7466 return rc;
7467 }
7468
7469 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
7470
7471 if (rc) {
7472 __ipr_remove(pdev);
7473 return rc;
7474 }
7475
7476 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7477 &ipr_trace_attr);
7478
7479 if (rc) {
7480 scsi_remove_host(ioa_cfg->host);
7481 __ipr_remove(pdev);
7482 return rc;
7483 }
7484
7485 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
7486 &ipr_dump_attr);
7487
7488 if (rc) {
7489 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
7490 &ipr_trace_attr);
7491 scsi_remove_host(ioa_cfg->host);
7492 __ipr_remove(pdev);
7493 return rc;
7494 }
7495
7496 scsi_scan_host(ioa_cfg->host);
7497 ipr_scan_vsets(ioa_cfg);
7498 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
7499 ioa_cfg->allow_ml_add_del = 1;
7500 ioa_cfg->host->max_channel = IPR_VSET_BUS;
7501 schedule_work(&ioa_cfg->work_q);
7502 return 0;
7503 }
7504
7505 /**
7506 * ipr_shutdown - Shutdown handler.
7507 * @pdev: pci device struct
7508 *
7509 * This function is invoked upon system shutdown/reboot. It will issue
7510 * an adapter shutdown to the adapter to flush the write cache.
7511 *
7512 * Return value:
7513 * none
7514 **/
7515 static void ipr_shutdown(struct pci_dev *pdev)
7516 {
7517 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
7518 unsigned long lock_flags = 0;
7519
7520 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7521 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
7522 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7523 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
7524 }
7525
7526 static struct pci_device_id ipr_pci_table[] __devinitdata = {
7527 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7528 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
7529 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7530 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
7531 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7532 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
7533 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
7534 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
7535 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7536 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
7537 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7538 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
7539 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7540 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
7541 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
7542 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0, 0 },
7543 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7544 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7545 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7546 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7547 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
7548 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 0 },
7549 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7550 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
7551 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0, 0 },
7553 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
7554 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0, 0 },
7555 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
7556 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0, 0 },
7557 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
7558 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
7559 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7560 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
7561 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7562 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0, 0 },
7563 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
7564 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0, 0 },
7565 { }
7566 };
7567 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
7568
7569 static struct pci_error_handlers ipr_err_handler = {
7570 .error_detected = ipr_pci_error_detected,
7571 .slot_reset = ipr_pci_slot_reset,
7572 };
7573
7574 static struct pci_driver ipr_driver = {
7575 .name = IPR_NAME,
7576 .id_table = ipr_pci_table,
7577 .probe = ipr_probe,
7578 .remove = ipr_remove,
7579 .shutdown = ipr_shutdown,
7580 .err_handler = &ipr_err_handler,
7581 };
7582
7583 /**
7584 * ipr_init - Module entry point
7585 *
7586 * Return value:
7587 * 0 on success / negative value on failure
7588 **/
7589 static int __init ipr_init(void)
7590 {
7591 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
7592 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
7593
7594 return pci_register_driver(&ipr_driver);
7595 }
7596
7597 /**
7598 * ipr_exit - Module unload
7599 *
7600 * Module unload entry point.
7601 *
7602 * Return value:
7603 * none
7604 **/
7605 static void __exit ipr_exit(void)
7606 {
7607 pci_unregister_driver(&ipr_driver);
7608 }
7609
7610 module_init(ipr_init);
7611 module_exit(ipr_exit);
kernel-based virtual machine