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[SCSI] ipr: slave_alloc optimization
[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / ipr.c
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1da177e4
LT		 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/config.h>
58#include <linux/fs.h>
59#include <linux/init.h>
60#include <linux/types.h>
61#include <linux/errno.h>
62#include <linux/kernel.h>
63#include <linux/ioport.h>
64#include <linux/delay.h>
65#include <linux/pci.h>
66#include <linux/wait.h>
67#include <linux/spinlock.h>
68#include <linux/sched.h>
69#include <linux/interrupt.h>
70#include <linux/blkdev.h>
71#include <linux/firmware.h>
72#include <linux/module.h>
73#include <linux/moduleparam.h>
74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/processor.h>
77#include <scsi/scsi.h>
78#include <scsi/scsi_host.h>
79#include <scsi/scsi_tcq.h>
80#include <scsi/scsi_eh.h>
81#include <scsi/scsi_cmnd.h>
82#include <scsi/scsi_request.h>
83#include "ipr.h"
84
85/*
86 * Global Data
87 */
88static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
93static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
94static DEFINE_SPINLOCK(ipr_driver_lock);
95
96/* This table describes the differences between DMA controller chips */
97static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
98 { /* Gemstone and Citrine */
99 .mailbox = 0x0042C,
100 .cache_line_size = 0x20,
101 {
102 .set_interrupt_mask_reg = 0x0022C,
103 .clr_interrupt_mask_reg = 0x00230,
104 .sense_interrupt_mask_reg = 0x0022C,
105 .clr_interrupt_reg = 0x00228,
106 .sense_interrupt_reg = 0x00224,
107 .ioarrin_reg = 0x00404,
108 .sense_uproc_interrupt_reg = 0x00214,
109 .set_uproc_interrupt_reg = 0x00214,
110 .clr_uproc_interrupt_reg = 0x00218
111 }
112 },
113 { /* Snipe and Scamp */
114 .mailbox = 0x0052C,
115 .cache_line_size = 0x20,
116 {
117 .set_interrupt_mask_reg = 0x00288,
118 .clr_interrupt_mask_reg = 0x0028C,
119 .sense_interrupt_mask_reg = 0x00288,
120 .clr_interrupt_reg = 0x00284,
121 .sense_interrupt_reg = 0x00280,
122 .ioarrin_reg = 0x00504,
123 .sense_uproc_interrupt_reg = 0x00290,
124 .set_uproc_interrupt_reg = 0x00290,
125 .clr_uproc_interrupt_reg = 0x00294
126 }
127 },
128};
129
130static const struct ipr_chip_t ipr_chip[] = {
131 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, &ipr_chip_cfg[0] },
132 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, &ipr_chip_cfg[0] },
133 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, &ipr_chip_cfg[1] },
134 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, &ipr_chip_cfg[1] }
135};
136
137static int ipr_max_bus_speeds [] = {
138 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
139};
140
141MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
142MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
143module_param_named(max_speed, ipr_max_speed, uint, 0);
144MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
145module_param_named(log_level, ipr_log_level, uint, 0);
146MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
147module_param_named(testmode, ipr_testmode, int, 0);
148MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
149module_param_named(fastfail, ipr_fastfail, int, 0);
150MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
151module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
152MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
153MODULE_LICENSE("GPL");
154MODULE_VERSION(IPR_DRIVER_VERSION);
155
156static const char *ipr_gpdd_dev_end_states[] = {
157 "Command complete",
158 "Terminated by host",
159 "Terminated by device reset",
160 "Terminated by bus reset",
161 "Unknown",
162 "Command not started"
163};
164
165static const char *ipr_gpdd_dev_bus_phases[] = {
166 "Bus free",
167 "Arbitration",
168 "Selection",
169 "Message out",
170 "Command",
171 "Message in",
172 "Data out",
173 "Data in",
174 "Status",
175 "Reselection",
176 "Unknown"
177};
178
179/* A constant array of IOASCs/URCs/Error Messages */
180static const
181struct ipr_error_table_t ipr_error_table[] = {
182 {0x00000000, 1, 1,
183 "8155: An unknown error was received"},
184 {0x00330000, 0, 0,
185 "Soft underlength error"},
186 {0x005A0000, 0, 0,
187 "Command to be cancelled not found"},
188 {0x00808000, 0, 0,
189 "Qualified success"},
190 {0x01080000, 1, 1,
191 "FFFE: Soft device bus error recovered by the IOA"},
192 {0x01170600, 0, 1,
193 "FFF9: Device sector reassign successful"},
194 {0x01170900, 0, 1,
195 "FFF7: Media error recovered by device rewrite procedures"},
196 {0x01180200, 0, 1,
197 "7001: IOA sector reassignment successful"},
198 {0x01180500, 0, 1,
199 "FFF9: Soft media error. Sector reassignment recommended"},
200 {0x01180600, 0, 1,
201 "FFF7: Media error recovered by IOA rewrite procedures"},
202 {0x01418000, 0, 1,
203 "FF3D: Soft PCI bus error recovered by the IOA"},
204 {0x01440000, 1, 1,
205 "FFF6: Device hardware error recovered by the IOA"},
206 {0x01448100, 0, 1,
207 "FFF6: Device hardware error recovered by the device"},
208 {0x01448200, 1, 1,
209 "FF3D: Soft IOA error recovered by the IOA"},
210 {0x01448300, 0, 1,
211 "FFFA: Undefined device response recovered by the IOA"},
212 {0x014A0000, 1, 1,
213 "FFF6: Device bus error, message or command phase"},
214 {0x015D0000, 0, 1,
215 "FFF6: Failure prediction threshold exceeded"},
216 {0x015D9200, 0, 1,
217 "8009: Impending cache battery pack failure"},
218 {0x02040400, 0, 0,
219 "34FF: Disk device format in progress"},
220 {0x023F0000, 0, 0,
221 "Synchronization required"},
222 {0x024E0000, 0, 0,
223 "No ready, IOA shutdown"},
224 {0x025A0000, 0, 0,
225 "Not ready, IOA has been shutdown"},
226 {0x02670100, 0, 1,
227 "3020: Storage subsystem configuration error"},
228 {0x03110B00, 0, 0,
229 "FFF5: Medium error, data unreadable, recommend reassign"},
230 {0x03110C00, 0, 0,
231 "7000: Medium error, data unreadable, do not reassign"},
232 {0x03310000, 0, 1,
233 "FFF3: Disk media format bad"},
234 {0x04050000, 0, 1,
235 "3002: Addressed device failed to respond to selection"},
236 {0x04080000, 1, 1,
237 "3100: Device bus error"},
238 {0x04080100, 0, 1,
239 "3109: IOA timed out a device command"},
240 {0x04088000, 0, 0,
241 "3120: SCSI bus is not operational"},
242 {0x04118000, 0, 1,
243 "9000: IOA reserved area data check"},
244 {0x04118100, 0, 1,
245 "9001: IOA reserved area invalid data pattern"},
246 {0x04118200, 0, 1,
247 "9002: IOA reserved area LRC error"},
248 {0x04320000, 0, 1,
249 "102E: Out of alternate sectors for disk storage"},
250 {0x04330000, 1, 1,
251 "FFF4: Data transfer underlength error"},
252 {0x04338000, 1, 1,
253 "FFF4: Data transfer overlength error"},
254 {0x043E0100, 0, 1,
255 "3400: Logical unit failure"},
256 {0x04408500, 0, 1,
257 "FFF4: Device microcode is corrupt"},
258 {0x04418000, 1, 1,
259 "8150: PCI bus error"},
260 {0x04430000, 1, 0,
261 "Unsupported device bus message received"},
262 {0x04440000, 1, 1,
263 "FFF4: Disk device problem"},
264 {0x04448200, 1, 1,
265 "8150: Permanent IOA failure"},
266 {0x04448300, 0, 1,
267 "3010: Disk device returned wrong response to IOA"},
268 {0x04448400, 0, 1,
269 "8151: IOA microcode error"},
270 {0x04448500, 0, 0,
271 "Device bus status error"},
272 {0x04448600, 0, 1,
273 "8157: IOA error requiring IOA reset to recover"},
274 {0x04490000, 0, 0,
275 "Message reject received from the device"},
276 {0x04449200, 0, 1,
277 "8008: A permanent cache battery pack failure occurred"},
278 {0x0444A000, 0, 1,
279 "9090: Disk unit has been modified after the last known status"},
280 {0x0444A200, 0, 1,
281 "9081: IOA detected device error"},
282 {0x0444A300, 0, 1,
283 "9082: IOA detected device error"},
284 {0x044A0000, 1, 1,
285 "3110: Device bus error, message or command phase"},
286 {0x04670400, 0, 1,
287 "9091: Incorrect hardware configuration change has been detected"},
288 {0x046E0000, 0, 1,
289 "FFF4: Command to logical unit failed"},
290 {0x05240000, 1, 0,
291 "Illegal request, invalid request type or request packet"},
292 {0x05250000, 0, 0,
293 "Illegal request, invalid resource handle"},
294 {0x05260000, 0, 0,
295 "Illegal request, invalid field in parameter list"},
296 {0x05260100, 0, 0,
297 "Illegal request, parameter not supported"},
298 {0x05260200, 0, 0,
299 "Illegal request, parameter value invalid"},
300 {0x052C0000, 0, 0,
301 "Illegal request, command sequence error"},
302 {0x06040500, 0, 1,
303 "9031: Array protection temporarily suspended, protection resuming"},
304 {0x06040600, 0, 1,
305 "9040: Array protection temporarily suspended, protection resuming"},
306 {0x06290000, 0, 1,
307 "FFFB: SCSI bus was reset"},
308 {0x06290500, 0, 0,
309 "FFFE: SCSI bus transition to single ended"},
310 {0x06290600, 0, 0,
311 "FFFE: SCSI bus transition to LVD"},
312 {0x06298000, 0, 1,
313 "FFFB: SCSI bus was reset by another initiator"},
314 {0x063F0300, 0, 1,
315 "3029: A device replacement has occurred"},
316 {0x064C8000, 0, 1,
317 "9051: IOA cache data exists for a missing or failed device"},
318 {0x06670100, 0, 1,
319 "9025: Disk unit is not supported at its physical location"},
320 {0x06670600, 0, 1,
321 "3020: IOA detected a SCSI bus configuration error"},
322 {0x06678000, 0, 1,
323 "3150: SCSI bus configuration error"},
324 {0x06690200, 0, 1,
325 "9041: Array protection temporarily suspended"},
326 {0x06698200, 0, 1,
327 "9042: Corrupt array parity detected on specified device"},
328 {0x066B0200, 0, 1,
329 "9030: Array no longer protected due to missing or failed disk unit"},
330 {0x066B8200, 0, 1,
331 "9032: Array exposed but still protected"},
332 {0x07270000, 0, 0,
333 "Failure due to other device"},
334 {0x07278000, 0, 1,
335 "9008: IOA does not support functions expected by devices"},
336 {0x07278100, 0, 1,
337 "9010: Cache data associated with attached devices cannot be found"},
338 {0x07278200, 0, 1,
339 "9011: Cache data belongs to devices other than those attached"},
340 {0x07278400, 0, 1,
341 "9020: Array missing 2 or more devices with only 1 device present"},
342 {0x07278500, 0, 1,
343 "9021: Array missing 2 or more devices with 2 or more devices present"},
344 {0x07278600, 0, 1,
345 "9022: Exposed array is missing a required device"},
346 {0x07278700, 0, 1,
347 "9023: Array member(s) not at required physical locations"},
348 {0x07278800, 0, 1,
349 "9024: Array not functional due to present hardware configuration"},
350 {0x07278900, 0, 1,
351 "9026: Array not functional due to present hardware configuration"},
352 {0x07278A00, 0, 1,
353 "9027: Array is missing a device and parity is out of sync"},
354 {0x07278B00, 0, 1,
355 "9028: Maximum number of arrays already exist"},
356 {0x07278C00, 0, 1,
357 "9050: Required cache data cannot be located for a disk unit"},
358 {0x07278D00, 0, 1,
359 "9052: Cache data exists for a device that has been modified"},
360 {0x07278F00, 0, 1,
361 "9054: IOA resources not available due to previous problems"},
362 {0x07279100, 0, 1,
363 "9092: Disk unit requires initialization before use"},
364 {0x07279200, 0, 1,
365 "9029: Incorrect hardware configuration change has been detected"},
366 {0x07279600, 0, 1,
367 "9060: One or more disk pairs are missing from an array"},
368 {0x07279700, 0, 1,
369 "9061: One or more disks are missing from an array"},
370 {0x07279800, 0, 1,
371 "9062: One or more disks are missing from an array"},
372 {0x07279900, 0, 1,
373 "9063: Maximum number of functional arrays has been exceeded"},
374 {0x0B260000, 0, 0,
375 "Aborted command, invalid descriptor"},
376 {0x0B5A0000, 0, 0,
377 "Command terminated by host"}
378};
379
380static const struct ipr_ses_table_entry ipr_ses_table[] = {
381 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
382 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
383 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
384 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
385 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
386 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
387 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
388 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
389 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
390 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
391 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
392 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
393 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
394};
395
396/*
397 * Function Prototypes
398 */
399static int ipr_reset_alert(struct ipr_cmnd *);
400static void ipr_process_ccn(struct ipr_cmnd *);
401static void ipr_process_error(struct ipr_cmnd *);
402static void ipr_reset_ioa_job(struct ipr_cmnd *);
403static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
404 enum ipr_shutdown_type);
405
406#ifdef CONFIG_SCSI_IPR_TRACE
407/**
408 * ipr_trc_hook - Add a trace entry to the driver trace
409 * @ipr_cmd: ipr command struct
410 * @type: trace type
411 * @add_data: additional data
412 *
413 * Return value:
414 * none
415 **/
416static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
417 u8 type, u32 add_data)
418{
419 struct ipr_trace_entry *trace_entry;
420 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
421
422 trace_entry = &ioa_cfg->trace[ioa_cfg->trace_index++];
423 trace_entry->time = jiffies;
424 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
425 trace_entry->type = type;
426 trace_entry->cmd_index = ipr_cmd->cmd_index;
427 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
428 trace_entry->u.add_data = add_data;
429}
430#else
431#define ipr_trc_hook(ipr_cmd, type, add_data) do { } while(0)
432#endif
433
434/**
435 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
436 * @ipr_cmd: ipr command struct
437 *
438 * Return value:
439 * none
440 **/
441static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
442{
443 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
444 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
445
446 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
447 ioarcb->write_data_transfer_length = 0;
448 ioarcb->read_data_transfer_length = 0;
449 ioarcb->write_ioadl_len = 0;
450 ioarcb->read_ioadl_len = 0;
451 ioasa->ioasc = 0;
452 ioasa->residual_data_len = 0;
453
454 ipr_cmd->scsi_cmd = NULL;
455 ipr_cmd->sense_buffer[0] = 0;
456 ipr_cmd->dma_use_sg = 0;
457}
458
459/**
460 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
461 * @ipr_cmd: ipr command struct
462 *
463 * Return value:
464 * none
465 **/
466static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
467{
468 ipr_reinit_ipr_cmnd(ipr_cmd);
469 ipr_cmd->u.scratch = 0;
470 ipr_cmd->sibling = NULL;
471 init_timer(&ipr_cmd->timer);
472}
473
474/**
475 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
476 * @ioa_cfg: ioa config struct
477 *
478 * Return value:
479 * pointer to ipr command struct
480 **/
481static
482struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
483{
484 struct ipr_cmnd *ipr_cmd;
485
486 ipr_cmd = list_entry(ioa_cfg->free_q.next, struct ipr_cmnd, queue);
487 list_del(&ipr_cmd->queue);
488 ipr_init_ipr_cmnd(ipr_cmd);
489
490 return ipr_cmd;
491}
492
493/**
494 * ipr_unmap_sglist - Unmap scatterlist if mapped
495 * @ioa_cfg: ioa config struct
496 * @ipr_cmd: ipr command struct
497 *
498 * Return value:
499 * nothing
500 **/
501static void ipr_unmap_sglist(struct ipr_ioa_cfg *ioa_cfg,
502 struct ipr_cmnd *ipr_cmd)
503{
504 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
505
506 if (ipr_cmd->dma_use_sg) {
507 if (scsi_cmd->use_sg > 0) {
508 pci_unmap_sg(ioa_cfg->pdev, scsi_cmd->request_buffer,
509 scsi_cmd->use_sg,
510 scsi_cmd->sc_data_direction);
511 } else {
512 pci_unmap_single(ioa_cfg->pdev, ipr_cmd->dma_handle,
513 scsi_cmd->request_bufflen,
514 scsi_cmd->sc_data_direction);
515 }
516 }
517}
518
519/**
520 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
521 * @ioa_cfg: ioa config struct
522 * @clr_ints: interrupts to clear
523 *
524 * This function masks all interrupts on the adapter, then clears the
525 * interrupts specified in the mask
526 *
527 * Return value:
528 * none
529 **/
530static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
531 u32 clr_ints)
532{
533 volatile u32 int_reg;
534
535 /* Stop new interrupts */
536 ioa_cfg->allow_interrupts = 0;
537
538 /* Set interrupt mask to stop all new interrupts */
539 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
540
541 /* Clear any pending interrupts */
542 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg);
543 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
544}
545
546/**
547 * ipr_save_pcix_cmd_reg - Save PCI-X command register
548 * @ioa_cfg: ioa config struct
549 *
550 * Return value:
551 * 0 on success / -EIO on failure
552 **/
553static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
554{
555 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
556
557 if (pcix_cmd_reg == 0) {
558 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
559 return -EIO;
560 }
561
562 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
563 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
564 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
565 return -EIO;
566 }
567
568 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
569 return 0;
570}
571
572/**
573 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
574 * @ioa_cfg: ioa config struct
575 *
576 * Return value:
577 * 0 on success / -EIO on failure
578 **/
579static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
580{
581 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
582
583 if (pcix_cmd_reg) {
584 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
585 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
586 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
587 return -EIO;
588 }
589 } else {
590 dev_err(&ioa_cfg->pdev->dev,
591 "Failed to setup PCI-X command register\n");
592 return -EIO;
593 }
594
595 return 0;
596}
597
598/**
599 * ipr_scsi_eh_done - mid-layer done function for aborted ops
600 * @ipr_cmd: ipr command struct
601 *
602 * This function is invoked by the interrupt handler for
603 * ops generated by the SCSI mid-layer which are being aborted.
604 *
605 * Return value:
606 * none
607 **/
608static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
609{
610 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
611 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
612
613 scsi_cmd->result |= (DID_ERROR << 16);
614
615 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
616 scsi_cmd->scsi_done(scsi_cmd);
617 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
618}
619
620/**
621 * ipr_fail_all_ops - Fails all outstanding ops.
622 * @ioa_cfg: ioa config struct
623 *
624 * This function fails all outstanding ops.
625 *
626 * Return value:
627 * none
628 **/
629static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
630{
631 struct ipr_cmnd *ipr_cmd, *temp;
632
633 ENTER;
634 list_for_each_entry_safe(ipr_cmd, temp, &ioa_cfg->pending_q, queue) {
635 list_del(&ipr_cmd->queue);
636
637 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
638 ipr_cmd->ioasa.ilid = cpu_to_be32(IPR_DRIVER_ILID);
639
640 if (ipr_cmd->scsi_cmd)
641 ipr_cmd->done = ipr_scsi_eh_done;
642
643 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, IPR_IOASC_IOA_WAS_RESET);
644 del_timer(&ipr_cmd->timer);
645 ipr_cmd->done(ipr_cmd);
646 }
647
648 LEAVE;
649}
650
651/**
652 * ipr_do_req - Send driver initiated requests.
653 * @ipr_cmd: ipr command struct
654 * @done: done function
655 * @timeout_func: timeout function
656 * @timeout: timeout value
657 *
658 * This function sends the specified command to the adapter with the
659 * timeout given. The done function is invoked on command completion.
660 *
661 * Return value:
662 * none
663 **/
664static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
665 void (*done) (struct ipr_cmnd *),
666 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
667{
668 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
669
670 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
671
672 ipr_cmd->done = done;
673
674 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
675 ipr_cmd->timer.expires = jiffies + timeout;
676 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
677
678 add_timer(&ipr_cmd->timer);
679
680 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
681
682 mb();
683 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
684 ioa_cfg->regs.ioarrin_reg);
685}
686
687/**
688 * ipr_internal_cmd_done - Op done function for an internally generated op.
689 * @ipr_cmd: ipr command struct
690 *
691 * This function is the op done function for an internally generated,
692 * blocking op. It simply wakes the sleeping thread.
693 *
694 * Return value:
695 * none
696 **/
697static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
698{
699 if (ipr_cmd->sibling)
700 ipr_cmd->sibling = NULL;
701 else
702 complete(&ipr_cmd->completion);
703}
704
705/**
706 * ipr_send_blocking_cmd - Send command and sleep on its completion.
707 * @ipr_cmd: ipr command struct
708 * @timeout_func: function to invoke if command times out
709 * @timeout: timeout
710 *
711 * Return value:
712 * none
713 **/
714static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
715 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
716 u32 timeout)
717{
718 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
719
720 init_completion(&ipr_cmd->completion);
721 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
722
723 spin_unlock_irq(ioa_cfg->host->host_lock);
724 wait_for_completion(&ipr_cmd->completion);
725 spin_lock_irq(ioa_cfg->host->host_lock);
726}
727
728/**
729 * ipr_send_hcam - Send an HCAM to the adapter.
730 * @ioa_cfg: ioa config struct
731 * @type: HCAM type
732 * @hostrcb: hostrcb struct
733 *
734 * This function will send a Host Controlled Async command to the adapter.
735 * If HCAMs are currently not allowed to be issued to the adapter, it will
736 * place the hostrcb on the free queue.
737 *
738 * Return value:
739 * none
740 **/
741static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
742 struct ipr_hostrcb *hostrcb)
743{
744 struct ipr_cmnd *ipr_cmd;
745 struct ipr_ioarcb *ioarcb;
746
747 if (ioa_cfg->allow_cmds) {
748 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
749 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
750 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
751
752 ipr_cmd->u.hostrcb = hostrcb;
753 ioarcb = &ipr_cmd->ioarcb;
754
755 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
756 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
757 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
758 ioarcb->cmd_pkt.cdb[1] = type;
759 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
760 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
761
762 ioarcb->read_data_transfer_length = cpu_to_be32(sizeof(hostrcb->hcam));
763 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
764 ipr_cmd->ioadl[0].flags_and_data_len =
765 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(hostrcb->hcam));
766 ipr_cmd->ioadl[0].address = cpu_to_be32(hostrcb->hostrcb_dma);
767
768 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
769 ipr_cmd->done = ipr_process_ccn;
770 else
771 ipr_cmd->done = ipr_process_error;
772
773 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
774
775 mb();
776 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
777 ioa_cfg->regs.ioarrin_reg);
778 } else {
779 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
780 }
781}
782
783/**
784 * ipr_init_res_entry - Initialize a resource entry struct.
785 * @res: resource entry struct
786 *
787 * Return value:
788 * none
789 **/
790static void ipr_init_res_entry(struct ipr_resource_entry *res)
791{
792 res->needs_sync_complete = 1;
793 res->in_erp = 0;
794 res->add_to_ml = 0;
795 res->del_from_ml = 0;
796 res->resetting_device = 0;
797 res->sdev = NULL;
798}
799
800/**
801 * ipr_handle_config_change - Handle a config change from the adapter
802 * @ioa_cfg: ioa config struct
803 * @hostrcb: hostrcb
804 *
805 * Return value:
806 * none
807 **/
808static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
809 struct ipr_hostrcb *hostrcb)
810{
811 struct ipr_resource_entry *res = NULL;
812 struct ipr_config_table_entry *cfgte;
813 u32 is_ndn = 1;
814
815 cfgte = &hostrcb->hcam.u.ccn.cfgte;
816
817 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
818 if (!memcmp(&res->cfgte.res_addr, &cfgte->res_addr,
819 sizeof(cfgte->res_addr))) {
820 is_ndn = 0;
821 break;
822 }
823 }
824
825 if (is_ndn) {
826 if (list_empty(&ioa_cfg->free_res_q)) {
827 ipr_send_hcam(ioa_cfg,
828 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
829 hostrcb);
830 return;
831 }
832
833 res = list_entry(ioa_cfg->free_res_q.next,
834 struct ipr_resource_entry, queue);
835
836 list_del(&res->queue);
837 ipr_init_res_entry(res);
838 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
839 }
840
841 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
842
843 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
844 if (res->sdev) {
845 res->sdev->hostdata = NULL;
846 res->del_from_ml = 1;
847 if (ioa_cfg->allow_ml_add_del)
848 schedule_work(&ioa_cfg->work_q);
849 } else
850 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
851 } else if (!res->sdev) {
852 res->add_to_ml = 1;
853 if (ioa_cfg->allow_ml_add_del)
854 schedule_work(&ioa_cfg->work_q);
855 }
856
857 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
858}
859
860/**
861 * ipr_process_ccn - Op done function for a CCN.
862 * @ipr_cmd: ipr command struct
863 *
864 * This function is the op done function for a configuration
865 * change notification host controlled async from the adapter.
866 *
867 * Return value:
868 * none
869 **/
870static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
871{
872 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
873 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
874 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
875
876 list_del(&hostrcb->queue);
877 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
878
879 if (ioasc) {
880 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
881 dev_err(&ioa_cfg->pdev->dev,
882 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
883
884 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
885 } else {
886 ipr_handle_config_change(ioa_cfg, hostrcb);
887 }
888}
889
890/**
891 * ipr_log_vpd - Log the passed VPD to the error log.
cfc32139 892 * @vpd: vendor/product id/sn struct
1da177e4
LT		 893 *
894 * Return value:
895 * none
896 **/
cfc32139 897static void ipr_log_vpd(struct ipr_vpd *vpd)
1da177e4
LT		 898{
899 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
900 + IPR_SERIAL_NUM_LEN];
901
cfc32139
BK		 902 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
903 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1da177e4
LT		 904 IPR_PROD_ID_LEN);
905 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
906 ipr_err("Vendor/Product ID: %s\n", buffer);
907
cfc32139 908 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1da177e4
LT		 909 buffer[IPR_SERIAL_NUM_LEN] = '\0';
910 ipr_err(" Serial Number: %s\n", buffer);
911}
912
913/**
914 * ipr_log_cache_error - Log a cache error.
915 * @ioa_cfg: ioa config struct
916 * @hostrcb: hostrcb struct
917 *
918 * Return value:
919 * none
920 **/
921static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
922 struct ipr_hostrcb *hostrcb)
923{
924 struct ipr_hostrcb_type_02_error *error =
925 &hostrcb->hcam.u.error.u.type_02_error;
926
927 ipr_err("-----Current Configuration-----\n");
928 ipr_err("Cache Directory Card Information:\n");
cfc32139 929 ipr_log_vpd(&error->ioa_vpd);
1da177e4 930 ipr_err("Adapter Card Information:\n");
cfc32139 931 ipr_log_vpd(&error->cfc_vpd);
1da177e4
LT		 932
933 ipr_err("-----Expected Configuration-----\n");
934 ipr_err("Cache Directory Card Information:\n");
cfc32139 935 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1da177e4 936 ipr_err("Adapter Card Information:\n");
cfc32139 937 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1da177e4
LT		 938
939 ipr_err("Additional IOA Data: %08X %08X %08X\n",
940 be32_to_cpu(error->ioa_data[0]),
941 be32_to_cpu(error->ioa_data[1]),
942 be32_to_cpu(error->ioa_data[2]));
943}
944
945/**
946 * ipr_log_config_error - Log a configuration error.
947 * @ioa_cfg: ioa config struct
948 * @hostrcb: hostrcb struct
949 *
950 * Return value:
951 * none
952 **/
953static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
954 struct ipr_hostrcb *hostrcb)
955{
956 int errors_logged, i;
957 struct ipr_hostrcb_device_data_entry *dev_entry;
958 struct ipr_hostrcb_type_03_error *error;
959
960 error = &hostrcb->hcam.u.error.u.type_03_error;
961 errors_logged = be32_to_cpu(error->errors_logged);
962
963 ipr_err("Device Errors Detected/Logged: %d/%d\n",
964 be32_to_cpu(error->errors_detected), errors_logged);
965
cfc32139 966 dev_entry = error->dev;
1da177e4
LT		 967
968 for (i = 0; i < errors_logged; i++, dev_entry++) {
969 ipr_err_separator;
970
fa15b1f6 971 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
cfc32139 972 ipr_log_vpd(&dev_entry->vpd);
1da177e4
LT		 973
974 ipr_err("-----New Device Information-----\n");
cfc32139 975 ipr_log_vpd(&dev_entry->new_vpd);
1da177e4
LT		 976
977 ipr_err("Cache Directory Card Information:\n");
cfc32139 978 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1da177e4
LT		 979
980 ipr_err("Adapter Card Information:\n");
cfc32139 981 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1da177e4
LT		 982
983 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
984 be32_to_cpu(dev_entry->ioa_data[0]),
985 be32_to_cpu(dev_entry->ioa_data[1]),
986 be32_to_cpu(dev_entry->ioa_data[2]),
987 be32_to_cpu(dev_entry->ioa_data[3]),
988 be32_to_cpu(dev_entry->ioa_data[4]));
989 }
990}
991
992/**
993 * ipr_log_array_error - Log an array configuration error.
994 * @ioa_cfg: ioa config struct
995 * @hostrcb: hostrcb struct
996 *
997 * Return value:
998 * none
999 **/
1000static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1001 struct ipr_hostrcb *hostrcb)
1002{
1003 int i;
1004 struct ipr_hostrcb_type_04_error *error;
1005 struct ipr_hostrcb_array_data_entry *array_entry;
1006 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1007
1008 error = &hostrcb->hcam.u.error.u.type_04_error;
1009
1010 ipr_err_separator;
1011
1012 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1013 error->protection_level,
1014 ioa_cfg->host->host_no,
1015 error->last_func_vset_res_addr.bus,
1016 error->last_func_vset_res_addr.target,
1017 error->last_func_vset_res_addr.lun);
1018
1019 ipr_err_separator;
1020
1021 array_entry = error->array_member;
1022
1023 for (i = 0; i < 18; i++) {
cfc32139 1024 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1da177e4
LT		 1025 continue;
1026
fa15b1f6 1027 if (be32_to_cpu(error->exposed_mode_adn) == i)
1da177e4 1028 ipr_err("Exposed Array Member %d:\n", i);
fa15b1f6 1029 else
1da177e4 1030 ipr_err("Array Member %d:\n", i);
1da177e4 1031
cfc32139 1032 ipr_log_vpd(&array_entry->vpd);
1da177e4 1033
fa15b1f6
BK		 1034 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1035 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1036 "Expected Location");
1da177e4
LT		 1037
1038 ipr_err_separator;
1039
1040 if (i == 9)
1041 array_entry = error->array_member2;
1042 else
1043 array_entry++;
1044 }
1045}
1046
1047/**
1048 * ipr_log_generic_error - Log an adapter error.
1049 * @ioa_cfg: ioa config struct
1050 * @hostrcb: hostrcb struct
1051 *
1052 * Return value:
1053 * none
1054 **/
1055static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1056 struct ipr_hostrcb *hostrcb)
1057{
1058 int i;
1059 int ioa_data_len = be32_to_cpu(hostrcb->hcam.length);
1060
1061 if (ioa_data_len == 0)
1062 return;
1063
1da177e4
LT		 1064 for (i = 0; i < ioa_data_len / 4; i += 4) {
1065 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1066 be32_to_cpu(hostrcb->hcam.u.raw.data[i]),
1067 be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]),
1068 be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]),
1069 be32_to_cpu(hostrcb->hcam.u.raw.data[i+3]));
1070 }
1071}
1072
1073/**
1074 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1075 * @ioasc: IOASC
1076 *
1077 * This function will return the index of into the ipr_error_table
1078 * for the specified IOASC. If the IOASC is not in the table,
1079 * 0 will be returned, which points to the entry used for unknown errors.
1080 *
1081 * Return value:
1082 * index into the ipr_error_table
1083 **/
1084static u32 ipr_get_error(u32 ioasc)
1085{
1086 int i;
1087
1088 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1089 if (ipr_error_table[i].ioasc == ioasc)
1090 return i;
1091
1092 return 0;
1093}
1094
1095/**
1096 * ipr_handle_log_data - Log an adapter error.
1097 * @ioa_cfg: ioa config struct
1098 * @hostrcb: hostrcb struct
1099 *
1100 * This function logs an adapter error to the system.
1101 *
1102 * Return value:
1103 * none
1104 **/
1105static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1106 struct ipr_hostrcb *hostrcb)
1107{
1108 u32 ioasc;
1109 int error_index;
1110
1111 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1112 return;
1113
1114 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1115 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1116
1117 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1118
1119 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1120 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1121 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1122 scsi_report_bus_reset(ioa_cfg->host,
1123 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1124 }
1125
1126 error_index = ipr_get_error(ioasc);
1127
1128 if (!ipr_error_table[error_index].log_hcam)
1129 return;
1130
1131 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
1132 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1133 "%s\n", ipr_error_table[error_index].error);
1134 } else {
1135 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1136 ipr_error_table[error_index].error);
1137 }
1138
1139 /* Set indication we have logged an error */
1140 ioa_cfg->errors_logged++;
1141
1142 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1143 return;
cf852037
BK		 1144 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
1145 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
1da177e4
LT		 1146
1147 switch (hostrcb->hcam.overlay_id) {
1da177e4
LT		 1148 case IPR_HOST_RCB_OVERLAY_ID_2:
1149 ipr_log_cache_error(ioa_cfg, hostrcb);
1150 break;
1151 case IPR_HOST_RCB_OVERLAY_ID_3:
1152 ipr_log_config_error(ioa_cfg, hostrcb);
1153 break;
1154 case IPR_HOST_RCB_OVERLAY_ID_4:
1155 case IPR_HOST_RCB_OVERLAY_ID_6:
1156 ipr_log_array_error(ioa_cfg, hostrcb);
1157 break;
cf852037 1158 case IPR_HOST_RCB_OVERLAY_ID_1:
1da177e4 1159 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1da177e4 1160 default:
a9cfca96 1161 ipr_log_generic_error(ioa_cfg, hostrcb);
1da177e4
LT		 1162 break;
1163 }
1164}
1165
1166/**
1167 * ipr_process_error - Op done function for an adapter error log.
1168 * @ipr_cmd: ipr command struct
1169 *
1170 * This function is the op done function for an error log host
1171 * controlled async from the adapter. It will log the error and
1172 * send the HCAM back to the adapter.
1173 *
1174 * Return value:
1175 * none
1176 **/
1177static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1178{
1179 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1180 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1181 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1182
1183 list_del(&hostrcb->queue);
1184 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1185
1186 if (!ioasc) {
1187 ipr_handle_log_data(ioa_cfg, hostrcb);
1188 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1189 dev_err(&ioa_cfg->pdev->dev,
1190 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1191 }
1192
1193 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1194}
1195
1196/**
1197 * ipr_timeout - An internally generated op has timed out.
1198 * @ipr_cmd: ipr command struct
1199 *
1200 * This function blocks host requests and initiates an
1201 * adapter reset.
1202 *
1203 * Return value:
1204 * none
1205 **/
1206static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1207{
1208 unsigned long lock_flags = 0;
1209 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1210
1211 ENTER;
1212 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1213
1214 ioa_cfg->errors_logged++;
1215 dev_err(&ioa_cfg->pdev->dev,
1216 "Adapter being reset due to command timeout.\n");
1217
1218 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1219 ioa_cfg->sdt_state = GET_DUMP;
1220
1221 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1222 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1223
1224 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1225 LEAVE;
1226}
1227
1228/**
1229 * ipr_oper_timeout - Adapter timed out transitioning to operational
1230 * @ipr_cmd: ipr command struct
1231 *
1232 * This function blocks host requests and initiates an
1233 * adapter reset.
1234 *
1235 * Return value:
1236 * none
1237 **/
1238static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1239{
1240 unsigned long lock_flags = 0;
1241 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1242
1243 ENTER;
1244 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1245
1246 ioa_cfg->errors_logged++;
1247 dev_err(&ioa_cfg->pdev->dev,
1248 "Adapter timed out transitioning to operational.\n");
1249
1250 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1251 ioa_cfg->sdt_state = GET_DUMP;
1252
1253 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1254 if (ipr_fastfail)
1255 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1256 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1257 }
1258
1259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1260 LEAVE;
1261}
1262
1263/**
1264 * ipr_reset_reload - Reset/Reload the IOA
1265 * @ioa_cfg: ioa config struct
1266 * @shutdown_type: shutdown type
1267 *
1268 * This function resets the adapter and re-initializes it.
1269 * This function assumes that all new host commands have been stopped.
1270 * Return value:
1271 * SUCCESS / FAILED
1272 **/
1273static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1274 enum ipr_shutdown_type shutdown_type)
1275{
1276 if (!ioa_cfg->in_reset_reload)
1277 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1278
1279 spin_unlock_irq(ioa_cfg->host->host_lock);
1280 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1281 spin_lock_irq(ioa_cfg->host->host_lock);
1282
1283 /* If we got hit with a host reset while we were already resetting
1284 the adapter for some reason, and the reset failed. */
1285 if (ioa_cfg->ioa_is_dead) {
1286 ipr_trace;
1287 return FAILED;
1288 }
1289
1290 return SUCCESS;
1291}
1292
1293/**
1294 * ipr_find_ses_entry - Find matching SES in SES table
1295 * @res: resource entry struct of SES
1296 *
1297 * Return value:
1298 * pointer to SES table entry / NULL on failure
1299 **/
1300static const struct ipr_ses_table_entry *
1301ipr_find_ses_entry(struct ipr_resource_entry *res)
1302{
1303 int i, j, matches;
1304 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1305
1306 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1307 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1308 if (ste->compare_product_id_byte[j] == 'X') {
1309 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1310 matches++;
1311 else
1312 break;
1313 } else
1314 matches++;
1315 }
1316
1317 if (matches == IPR_PROD_ID_LEN)
1318 return ste;
1319 }
1320
1321 return NULL;
1322}
1323
1324/**
1325 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1326 * @ioa_cfg: ioa config struct
1327 * @bus: SCSI bus
1328 * @bus_width: bus width
1329 *
1330 * Return value:
1331 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1332 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1333 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1334 * max 160MHz = max 320MB/sec).
1335 **/
1336static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1337{
1338 struct ipr_resource_entry *res;
1339 const struct ipr_ses_table_entry *ste;
1340 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1341
1342 /* Loop through each config table entry in the config table buffer */
1343 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1344 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1345 continue;
1346
1347 if (bus != res->cfgte.res_addr.bus)
1348 continue;
1349
1350 if (!(ste = ipr_find_ses_entry(res)))
1351 continue;
1352
1353 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1354 }
1355
1356 return max_xfer_rate;
1357}
1358
1359/**
1360 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1361 * @ioa_cfg: ioa config struct
1362 * @max_delay: max delay in micro-seconds to wait
1363 *
1364 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1365 *
1366 * Return value:
1367 * 0 on success / other on failure
1368 **/
1369static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1370{
1371 volatile u32 pcii_reg;
1372 int delay = 1;
1373
1374 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1375 while (delay < max_delay) {
1376 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1377
1378 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1379 return 0;
1380
1381 /* udelay cannot be used if delay is more than a few milliseconds */
1382 if ((delay / 1000) > MAX_UDELAY_MS)
1383 mdelay(delay / 1000);
1384 else
1385 udelay(delay);
1386
1387 delay += delay;
1388 }
1389 return -EIO;
1390}
1391
1392/**
1393 * ipr_get_ldump_data_section - Dump IOA memory
1394 * @ioa_cfg: ioa config struct
1395 * @start_addr: adapter address to dump
1396 * @dest: destination kernel buffer
1397 * @length_in_words: length to dump in 4 byte words
1398 *
1399 * Return value:
1400 * 0 on success / -EIO on failure
1401 **/
1402static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1403 u32 start_addr,
1404 __be32 *dest, u32 length_in_words)
1405{
1406 volatile u32 temp_pcii_reg;
1407 int i, delay = 0;
1408
1409 /* Write IOA interrupt reg starting LDUMP state */
1410 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1411 ioa_cfg->regs.set_uproc_interrupt_reg);
1412
1413 /* Wait for IO debug acknowledge */
1414 if (ipr_wait_iodbg_ack(ioa_cfg,
1415 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1416 dev_err(&ioa_cfg->pdev->dev,
1417 "IOA dump long data transfer timeout\n");
1418 return -EIO;
1419 }
1420
1421 /* Signal LDUMP interlocked - clear IO debug ack */
1422 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1423 ioa_cfg->regs.clr_interrupt_reg);
1424
1425 /* Write Mailbox with starting address */
1426 writel(start_addr, ioa_cfg->ioa_mailbox);
1427
1428 /* Signal address valid - clear IOA Reset alert */
1429 writel(IPR_UPROCI_RESET_ALERT,
1430 ioa_cfg->regs.clr_uproc_interrupt_reg);
1431
1432 for (i = 0; i < length_in_words; i++) {
1433 /* Wait for IO debug acknowledge */
1434 if (ipr_wait_iodbg_ack(ioa_cfg,
1435 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1436 dev_err(&ioa_cfg->pdev->dev,
1437 "IOA dump short data transfer timeout\n");
1438 return -EIO;
1439 }
1440
1441 /* Read data from mailbox and increment destination pointer */
1442 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1443 dest++;
1444
1445 /* For all but the last word of data, signal data received */
1446 if (i < (length_in_words - 1)) {
1447 /* Signal dump data received - Clear IO debug Ack */
1448 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1449 ioa_cfg->regs.clr_interrupt_reg);
1450 }
1451 }
1452
1453 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1454 writel(IPR_UPROCI_RESET_ALERT,
1455 ioa_cfg->regs.set_uproc_interrupt_reg);
1456
1457 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1458 ioa_cfg->regs.clr_uproc_interrupt_reg);
1459
1460 /* Signal dump data received - Clear IO debug Ack */
1461 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1462 ioa_cfg->regs.clr_interrupt_reg);
1463
1464 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1465 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1466 temp_pcii_reg =
1467 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1468
1469 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1470 return 0;
1471
1472 udelay(10);
1473 delay += 10;
1474 }
1475
1476 return 0;
1477}
1478
1479#ifdef CONFIG_SCSI_IPR_DUMP
1480/**
1481 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1482 * @ioa_cfg: ioa config struct
1483 * @pci_address: adapter address
1484 * @length: length of data to copy
1485 *
1486 * Copy data from PCI adapter to kernel buffer.
1487 * Note: length MUST be a 4 byte multiple
1488 * Return value:
1489 * 0 on success / other on failure
1490 **/
1491static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1492 unsigned long pci_address, u32 length)
1493{
1494 int bytes_copied = 0;
1495 int cur_len, rc, rem_len, rem_page_len;
1496 __be32 *page;
1497 unsigned long lock_flags = 0;
1498 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1499
1500 while (bytes_copied < length &&
1501 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1502 if (ioa_dump->page_offset >= PAGE_SIZE ||
1503 ioa_dump->page_offset == 0) {
1504 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1505
1506 if (!page) {
1507 ipr_trace;
1508 return bytes_copied;
1509 }
1510
1511 ioa_dump->page_offset = 0;
1512 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1513 ioa_dump->next_page_index++;
1514 } else
1515 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1516
1517 rem_len = length - bytes_copied;
1518 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1519 cur_len = min(rem_len, rem_page_len);
1520
1521 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1522 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1523 rc = -EIO;
1524 } else {
1525 rc = ipr_get_ldump_data_section(ioa_cfg,
1526 pci_address + bytes_copied,
1527 &page[ioa_dump->page_offset / 4],
1528 (cur_len / sizeof(u32)));
1529 }
1530 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1531
1532 if (!rc) {
1533 ioa_dump->page_offset += cur_len;
1534 bytes_copied += cur_len;
1535 } else {
1536 ipr_trace;
1537 break;
1538 }
1539 schedule();
1540 }
1541
1542 return bytes_copied;
1543}
1544
1545/**
1546 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1547 * @hdr: dump entry header struct
1548 *
1549 * Return value:
1550 * nothing
1551 **/
1552static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1553{
1554 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1555 hdr->num_elems = 1;
1556 hdr->offset = sizeof(*hdr);
1557 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1558}
1559
1560/**
1561 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1562 * @ioa_cfg: ioa config struct
1563 * @driver_dump: driver dump struct
1564 *
1565 * Return value:
1566 * nothing
1567 **/
1568static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1569 struct ipr_driver_dump *driver_dump)
1570{
1571 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1572
1573 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1574 driver_dump->ioa_type_entry.hdr.len =
1575 sizeof(struct ipr_dump_ioa_type_entry) -
1576 sizeof(struct ipr_dump_entry_header);
1577 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1578 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1579 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1580 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1581 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1582 ucode_vpd->minor_release[1];
1583 driver_dump->hdr.num_entries++;
1584}
1585
1586/**
1587 * ipr_dump_version_data - Fill in the driver version in the dump.
1588 * @ioa_cfg: ioa config struct
1589 * @driver_dump: driver dump struct
1590 *
1591 * Return value:
1592 * nothing
1593 **/
1594static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1595 struct ipr_driver_dump *driver_dump)
1596{
1597 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1598 driver_dump->version_entry.hdr.len =
1599 sizeof(struct ipr_dump_version_entry) -
1600 sizeof(struct ipr_dump_entry_header);
1601 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1602 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1603 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1604 driver_dump->hdr.num_entries++;
1605}
1606
1607/**
1608 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1609 * @ioa_cfg: ioa config struct
1610 * @driver_dump: driver dump struct
1611 *
1612 * Return value:
1613 * nothing
1614 **/
1615static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1616 struct ipr_driver_dump *driver_dump)
1617{
1618 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1619 driver_dump->trace_entry.hdr.len =
1620 sizeof(struct ipr_dump_trace_entry) -
1621 sizeof(struct ipr_dump_entry_header);
1622 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1623 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1624 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1625 driver_dump->hdr.num_entries++;
1626}
1627
1628/**
1629 * ipr_dump_location_data - Fill in the IOA location in the dump.
1630 * @ioa_cfg: ioa config struct
1631 * @driver_dump: driver dump struct
1632 *
1633 * Return value:
1634 * nothing
1635 **/
1636static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1637 struct ipr_driver_dump *driver_dump)
1638{
1639 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1640 driver_dump->location_entry.hdr.len =
1641 sizeof(struct ipr_dump_location_entry) -
1642 sizeof(struct ipr_dump_entry_header);
1643 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1644 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1645 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1646 driver_dump->hdr.num_entries++;
1647}
1648
1649/**
1650 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1651 * @ioa_cfg: ioa config struct
1652 * @dump: dump struct
1653 *
1654 * Return value:
1655 * nothing
1656 **/
1657static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1658{
1659 unsigned long start_addr, sdt_word;
1660 unsigned long lock_flags = 0;
1661 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1662 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1663 u32 num_entries, start_off, end_off;
1664 u32 bytes_to_copy, bytes_copied, rc;
1665 struct ipr_sdt *sdt;
1666 int i;
1667
1668 ENTER;
1669
1670 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1671
1672 if (ioa_cfg->sdt_state != GET_DUMP) {
1673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1674 return;
1675 }
1676
1677 start_addr = readl(ioa_cfg->ioa_mailbox);
1678
1679 if (!ipr_sdt_is_fmt2(start_addr)) {
1680 dev_err(&ioa_cfg->pdev->dev,
1681 "Invalid dump table format: %lx\n", start_addr);
1682 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1683 return;
1684 }
1685
1686 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1687
1688 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1689
1690 /* Initialize the overall dump header */
1691 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1692 driver_dump->hdr.num_entries = 1;
1693 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1694 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1695 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1696 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1697
1698 ipr_dump_version_data(ioa_cfg, driver_dump);
1699 ipr_dump_location_data(ioa_cfg, driver_dump);
1700 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1701 ipr_dump_trace_data(ioa_cfg, driver_dump);
1702
1703 /* Update dump_header */
1704 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1705
1706 /* IOA Dump entry */
1707 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1708 ioa_dump->format = IPR_SDT_FMT2;
1709 ioa_dump->hdr.len = 0;
1710 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1711 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1712
1713 /* First entries in sdt are actually a list of dump addresses and
1714 lengths to gather the real dump data. sdt represents the pointer
1715 to the ioa generated dump table. Dump data will be extracted based
1716 on entries in this table */
1717 sdt = &ioa_dump->sdt;
1718
1719 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
1720 sizeof(struct ipr_sdt) / sizeof(__be32));
1721
1722 /* Smart Dump table is ready to use and the first entry is valid */
1723 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
1724 dev_err(&ioa_cfg->pdev->dev,
1725 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1726 rc, be32_to_cpu(sdt->hdr.state));
1727 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
1728 ioa_cfg->sdt_state = DUMP_OBTAINED;
1729 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1730 return;
1731 }
1732
1733 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
1734
1735 if (num_entries > IPR_NUM_SDT_ENTRIES)
1736 num_entries = IPR_NUM_SDT_ENTRIES;
1737
1738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1739
1740 for (i = 0; i < num_entries; i++) {
1741 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
1742 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1743 break;
1744 }
1745
1746 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
1747 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
1748 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
1749 end_off = be32_to_cpu(sdt->entry[i].end_offset);
1750
1751 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
1752 bytes_to_copy = end_off - start_off;
1753 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
1754 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
1755 continue;
1756 }
1757
1758 /* Copy data from adapter to driver buffers */
1759 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
1760 bytes_to_copy);
1761
1762 ioa_dump->hdr.len += bytes_copied;
1763
1764 if (bytes_copied != bytes_to_copy) {
1765 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1766 break;
1767 }
1768 }
1769 }
1770 }
1771
1772 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
1773
1774 /* Update dump_header */
1775 driver_dump->hdr.len += ioa_dump->hdr.len;
1776 wmb();
1777 ioa_cfg->sdt_state = DUMP_OBTAINED;
1778 LEAVE;
1779}
1780
1781#else
1782#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
1783#endif
1784
1785/**
1786 * ipr_release_dump - Free adapter dump memory
1787 * @kref: kref struct
1788 *
1789 * Return value:
1790 * nothing
1791 **/
1792static void ipr_release_dump(struct kref *kref)
1793{
1794 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
1795 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
1796 unsigned long lock_flags = 0;
1797 int i;
1798
1799 ENTER;
1800 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1801 ioa_cfg->dump = NULL;
1802 ioa_cfg->sdt_state = INACTIVE;
1803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1804
1805 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
1806 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
1807
1808 kfree(dump);
1809 LEAVE;
1810}
1811
1812/**
1813 * ipr_worker_thread - Worker thread
1814 * @data: ioa config struct
1815 *
1816 * Called at task level from a work thread. This function takes care
1817 * of adding and removing device from the mid-layer as configuration
1818 * changes are detected by the adapter.
1819 *
1820 * Return value:
1821 * nothing
1822 **/
1823static void ipr_worker_thread(void *data)
1824{
1825 unsigned long lock_flags;
1826 struct ipr_resource_entry *res;
1827 struct scsi_device *sdev;
1828 struct ipr_dump *dump;
1829 struct ipr_ioa_cfg *ioa_cfg = data;
1830 u8 bus, target, lun;
1831 int did_work;
1832
1833 ENTER;
1834 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1835
1836 if (ioa_cfg->sdt_state == GET_DUMP) {
1837 dump = ioa_cfg->dump;
1838 if (!dump) {
1839 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1840 return;
1841 }
1842 kref_get(&dump->kref);
1843 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1844 ipr_get_ioa_dump(ioa_cfg, dump);
1845 kref_put(&dump->kref, ipr_release_dump);
1846
1847 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1848 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
1849 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1850 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1851 return;
1852 }
1853
1854restart:
1855 do {
1856 did_work = 0;
1857 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
1858 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1859 return;
1860 }
1861
1862 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1863 if (res->del_from_ml && res->sdev) {
1864 did_work = 1;
1865 sdev = res->sdev;
1866 if (!scsi_device_get(sdev)) {
1867 res->sdev = NULL;
1868 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1869 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1870 scsi_remove_device(sdev);
1871 scsi_device_put(sdev);
1872 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1873 }
1874 break;
1875 }
1876 }
1877 } while(did_work);
1878
1879 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1880 if (res->add_to_ml) {
1881 bus = res->cfgte.res_addr.bus;
1882 target = res->cfgte.res_addr.target;
1883 lun = res->cfgte.res_addr.lun;
1884 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1885 scsi_add_device(ioa_cfg->host, bus, target, lun);
1886 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1887 goto restart;
1888 }
1889 }
1890
1891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1892 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL);
1893 LEAVE;
1894}
1895
1896#ifdef CONFIG_SCSI_IPR_TRACE
1897/**
1898 * ipr_read_trace - Dump the adapter trace
1899 * @kobj: kobject struct
1900 * @buf: buffer
1901 * @off: offset
1902 * @count: buffer size
1903 *
1904 * Return value:
1905 * number of bytes printed to buffer
1906 **/
1907static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
1908 loff_t off, size_t count)
1909{
1910 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
1911 struct Scsi_Host *shost = class_to_shost(cdev);
1912 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1913 unsigned long lock_flags = 0;
1914 int size = IPR_TRACE_SIZE;
1915 char *src = (char *)ioa_cfg->trace;
1916
1917 if (off > size)
1918 return 0;
1919 if (off + count > size) {
1920 size -= off;
1921 count = size;
1922 }
1923
1924 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1925 memcpy(buf, &src[off], count);
1926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1927 return count;
1928}
1929
1930static struct bin_attribute ipr_trace_attr = {
1931 .attr = {
1932 .name = "trace",
1933 .mode = S_IRUGO,
1934 },
1935 .size = 0,
1936 .read = ipr_read_trace,
1937};
1938#endif
1939
1940/**
1941 * ipr_show_fw_version - Show the firmware version
1942 * @class_dev: class device struct
1943 * @buf: buffer
1944 *
1945 * Return value:
1946 * number of bytes printed to buffer
1947 **/
1948static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
1949{
1950 struct Scsi_Host *shost = class_to_shost(class_dev);
1951 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1952 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1953 unsigned long lock_flags = 0;
1954 int len;
1955
1956 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1957 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
1958 ucode_vpd->major_release, ucode_vpd->card_type,
1959 ucode_vpd->minor_release[0],
1960 ucode_vpd->minor_release[1]);
1961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1962 return len;
1963}
1964
1965static struct class_device_attribute ipr_fw_version_attr = {
1966 .attr = {
1967 .name = "fw_version",
1968 .mode = S_IRUGO,
1969 },
1970 .show = ipr_show_fw_version,
1971};
1972
1973/**
1974 * ipr_show_log_level - Show the adapter's error logging level
1975 * @class_dev: class device struct
1976 * @buf: buffer
1977 *
1978 * Return value:
1979 * number of bytes printed to buffer
1980 **/
1981static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
1982{
1983 struct Scsi_Host *shost = class_to_shost(class_dev);
1984 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1985 unsigned long lock_flags = 0;
1986 int len;
1987
1988 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1989 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
1990 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1991 return len;
1992}
1993
1994/**
1995 * ipr_store_log_level - Change the adapter's error logging level
1996 * @class_dev: class device struct
1997 * @buf: buffer
1998 *
1999 * Return value:
2000 * number of bytes printed to buffer
2001 **/
2002static ssize_t ipr_store_log_level(struct class_device *class_dev,
2003 const char *buf, size_t count)
2004{
2005 struct Scsi_Host *shost = class_to_shost(class_dev);
2006 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2007 unsigned long lock_flags = 0;
2008
2009 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2010 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2011 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2012 return strlen(buf);
2013}
2014
2015static struct class_device_attribute ipr_log_level_attr = {
2016 .attr = {
2017 .name = "log_level",
2018 .mode = S_IRUGO | S_IWUSR,
2019 },
2020 .show = ipr_show_log_level,
2021 .store = ipr_store_log_level
2022};
2023
2024/**
2025 * ipr_store_diagnostics - IOA Diagnostics interface
2026 * @class_dev: class_device struct
2027 * @buf: buffer
2028 * @count: buffer size
2029 *
2030 * This function will reset the adapter and wait a reasonable
2031 * amount of time for any errors that the adapter might log.
2032 *
2033 * Return value:
2034 * count on success / other on failure
2035 **/
2036static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2037 const char *buf, size_t count)
2038{
2039 struct Scsi_Host *shost = class_to_shost(class_dev);
2040 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2041 unsigned long lock_flags = 0;
2042 int rc = count;
2043
2044 if (!capable(CAP_SYS_ADMIN))
2045 return -EACCES;
2046
2047 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2048 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2049 ioa_cfg->errors_logged = 0;
2050 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2051
2052 if (ioa_cfg->in_reset_reload) {
2053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2054 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2055
2056 /* Wait for a second for any errors to be logged */
2057 msleep(1000);
2058 } else {
2059 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2060 return -EIO;
2061 }
2062
2063 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2064 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2065 rc = -EIO;
2066 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2067
2068 return rc;
2069}
2070
2071static struct class_device_attribute ipr_diagnostics_attr = {
2072 .attr = {
2073 .name = "run_diagnostics",
2074 .mode = S_IWUSR,
2075 },
2076 .store = ipr_store_diagnostics
2077};
2078
2079/**
2080 * ipr_store_reset_adapter - Reset the adapter
2081 * @class_dev: class_device struct
2082 * @buf: buffer
2083 * @count: buffer size
2084 *
2085 * This function will reset the adapter.
2086 *
2087 * Return value:
2088 * count on success / other on failure
2089 **/
2090static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2091 const char *buf, size_t count)
2092{
2093 struct Scsi_Host *shost = class_to_shost(class_dev);
2094 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2095 unsigned long lock_flags;
2096 int result = count;
2097
2098 if (!capable(CAP_SYS_ADMIN))
2099 return -EACCES;
2100
2101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2102 if (!ioa_cfg->in_reset_reload)
2103 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2104 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2105 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2106
2107 return result;
2108}
2109
2110static struct class_device_attribute ipr_ioa_reset_attr = {
2111 .attr = {
2112 .name = "reset_host",
2113 .mode = S_IWUSR,
2114 },
2115 .store = ipr_store_reset_adapter
2116};
2117
2118/**
2119 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2120 * @buf_len: buffer length
2121 *
2122 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2123 * list to use for microcode download
2124 *
2125 * Return value:
2126 * pointer to sglist / NULL on failure
2127 **/
2128static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2129{
2130 int sg_size, order, bsize_elem, num_elem, i, j;
2131 struct ipr_sglist *sglist;
2132 struct scatterlist *scatterlist;
2133 struct page *page;
2134
2135 /* Get the minimum size per scatter/gather element */
2136 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2137
2138 /* Get the actual size per element */
2139 order = get_order(sg_size);
2140
2141 /* Determine the actual number of bytes per element */
2142 bsize_elem = PAGE_SIZE * (1 << order);
2143
2144 /* Determine the actual number of sg entries needed */
2145 if (buf_len % bsize_elem)
2146 num_elem = (buf_len / bsize_elem) + 1;
2147 else
2148 num_elem = buf_len / bsize_elem;
2149
2150 /* Allocate a scatter/gather list for the DMA */
2151 sglist = kmalloc(sizeof(struct ipr_sglist) +
2152 (sizeof(struct scatterlist) * (num_elem - 1)),
2153 GFP_KERNEL);
2154
2155 if (sglist == NULL) {
2156 ipr_trace;
2157 return NULL;
2158 }
2159
2160 memset(sglist, 0, sizeof(struct ipr_sglist) +
2161 (sizeof(struct scatterlist) * (num_elem - 1)));
2162
2163 scatterlist = sglist->scatterlist;
2164
2165 sglist->order = order;
2166 sglist->num_sg = num_elem;
2167
2168 /* Allocate a bunch of sg elements */
2169 for (i = 0; i < num_elem; i++) {
2170 page = alloc_pages(GFP_KERNEL, order);
2171 if (!page) {
2172 ipr_trace;
2173
2174 /* Free up what we already allocated */
2175 for (j = i - 1; j >= 0; j--)
2176 __free_pages(scatterlist[j].page, order);
2177 kfree(sglist);
2178 return NULL;
2179 }
2180
2181 scatterlist[i].page = page;
2182 }
2183
2184 return sglist;
2185}
2186
2187/**
2188 * ipr_free_ucode_buffer - Frees a microcode download buffer
2189 * @p_dnld: scatter/gather list pointer
2190 *
2191 * Free a DMA'able ucode download buffer previously allocated with
2192 * ipr_alloc_ucode_buffer
2193 *
2194 * Return value:
2195 * nothing
2196 **/
2197static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2198{
2199 int i;
2200
2201 for (i = 0; i < sglist->num_sg; i++)
2202 __free_pages(sglist->scatterlist[i].page, sglist->order);
2203
2204 kfree(sglist);
2205}
2206
2207/**
2208 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2209 * @sglist: scatter/gather list pointer
2210 * @buffer: buffer pointer
2211 * @len: buffer length
2212 *
2213 * Copy a microcode image from a user buffer into a buffer allocated by
2214 * ipr_alloc_ucode_buffer
2215 *
2216 * Return value:
2217 * 0 on success / other on failure
2218 **/
2219static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2220 u8 *buffer, u32 len)
2221{
2222 int bsize_elem, i, result = 0;
2223 struct scatterlist *scatterlist;
2224 void *kaddr;
2225
2226 /* Determine the actual number of bytes per element */
2227 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2228
2229 scatterlist = sglist->scatterlist;
2230
2231 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2232 kaddr = kmap(scatterlist[i].page);
2233 memcpy(kaddr, buffer, bsize_elem);
2234 kunmap(scatterlist[i].page);
2235
2236 scatterlist[i].length = bsize_elem;
2237
2238 if (result != 0) {
2239 ipr_trace;
2240 return result;
2241 }
2242 }
2243
2244 if (len % bsize_elem) {
2245 kaddr = kmap(scatterlist[i].page);
2246 memcpy(kaddr, buffer, len % bsize_elem);
2247 kunmap(scatterlist[i].page);
2248
2249 scatterlist[i].length = len % bsize_elem;
2250 }
2251
2252 sglist->buffer_len = len;
2253 return result;
2254}
2255
2256/**
2257 * ipr_map_ucode_buffer - Map a microcode download buffer
2258 * @ipr_cmd: ipr command struct
2259 * @sglist: scatter/gather list
2260 * @len: total length of download buffer
2261 *
2262 * Maps a microcode download scatter/gather list for DMA and
2263 * builds the IOADL.
2264 *
2265 * Return value:
2266 * 0 on success / -EIO on failure
2267 **/
2268static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd,
2269 struct ipr_sglist *sglist, int len)
2270{
2271 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2272 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2273 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2274 struct scatterlist *scatterlist = sglist->scatterlist;
2275 int i;
2276
2277 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist,
2278 sglist->num_sg, DMA_TO_DEVICE);
2279
2280 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2281 ioarcb->write_data_transfer_length = cpu_to_be32(len);
2282 ioarcb->write_ioadl_len =
2283 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2284
2285 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2286 ioadl[i].flags_and_data_len =
2287 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2288 ioadl[i].address =
2289 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2290 }
2291
2292 if (likely(ipr_cmd->dma_use_sg)) {
2293 ioadl[i-1].flags_and_data_len |=
2294 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2295 }
2296 else {
2297 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
2298 return -EIO;
2299 }
2300
2301 return 0;
2302}
2303
2304/**
2305 * ipr_store_update_fw - Update the firmware on the adapter
2306 * @class_dev: class_device struct
2307 * @buf: buffer
2308 * @count: buffer size
2309 *
2310 * This function will update the firmware on the adapter.
2311 *
2312 * Return value:
2313 * count on success / other on failure
2314 **/
2315static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2316 const char *buf, size_t count)
2317{
2318 struct Scsi_Host *shost = class_to_shost(class_dev);
2319 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2320 struct ipr_ucode_image_header *image_hdr;
2321 const struct firmware *fw_entry;
2322 struct ipr_sglist *sglist;
2323 unsigned long lock_flags;
2324 char fname[100];
2325 char *src;
2326 int len, result, dnld_size;
2327
2328 if (!capable(CAP_SYS_ADMIN))
2329 return -EACCES;
2330
2331 len = snprintf(fname, 99, "%s", buf);
2332 fname[len-1] = '\0';
2333
2334 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2335 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2336 return -EIO;
2337 }
2338
2339 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2340
2341 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2342 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2343 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2344 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2345 release_firmware(fw_entry);
2346 return -EINVAL;
2347 }
2348
2349 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2350 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2351 sglist = ipr_alloc_ucode_buffer(dnld_size);
2352
2353 if (!sglist) {
2354 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2355 release_firmware(fw_entry);
2356 return -ENOMEM;
2357 }
2358
2359 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2360
2361 if (result) {
2362 dev_err(&ioa_cfg->pdev->dev,
2363 "Microcode buffer copy to DMA buffer failed\n");
2364 ipr_free_ucode_buffer(sglist);
2365 release_firmware(fw_entry);
2366 return result;
2367 }
2368
2369 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2370
2371 if (ioa_cfg->ucode_sglist) {
2372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2373 dev_err(&ioa_cfg->pdev->dev,
2374 "Microcode download already in progress\n");
2375 ipr_free_ucode_buffer(sglist);
2376 release_firmware(fw_entry);
2377 return -EIO;
2378 }
2379
2380 ioa_cfg->ucode_sglist = sglist;
2381 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2383 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2384
2385 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2386 ioa_cfg->ucode_sglist = NULL;
2387 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2388
2389 ipr_free_ucode_buffer(sglist);
2390 release_firmware(fw_entry);
2391
2392 return count;
2393}
2394
2395static struct class_device_attribute ipr_update_fw_attr = {
2396 .attr = {
2397 .name = "update_fw",
2398 .mode = S_IWUSR,
2399 },
2400 .store = ipr_store_update_fw
2401};
2402
2403static struct class_device_attribute *ipr_ioa_attrs[] = {
2404 &ipr_fw_version_attr,
2405 &ipr_log_level_attr,
2406 &ipr_diagnostics_attr,
2407 &ipr_ioa_reset_attr,
2408 &ipr_update_fw_attr,
2409 NULL,
2410};
2411
2412#ifdef CONFIG_SCSI_IPR_DUMP
2413/**
2414 * ipr_read_dump - Dump the adapter
2415 * @kobj: kobject struct
2416 * @buf: buffer
2417 * @off: offset
2418 * @count: buffer size
2419 *
2420 * Return value:
2421 * number of bytes printed to buffer
2422 **/
2423static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2424 loff_t off, size_t count)
2425{
2426 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2427 struct Scsi_Host *shost = class_to_shost(cdev);
2428 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2429 struct ipr_dump *dump;
2430 unsigned long lock_flags = 0;
2431 char *src;
2432 int len;
2433 size_t rc = count;
2434
2435 if (!capable(CAP_SYS_ADMIN))
2436 return -EACCES;
2437
2438 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2439 dump = ioa_cfg->dump;
2440
2441 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2442 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2443 return 0;
2444 }
2445 kref_get(&dump->kref);
2446 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2447
2448 if (off > dump->driver_dump.hdr.len) {
2449 kref_put(&dump->kref, ipr_release_dump);
2450 return 0;
2451 }
2452
2453 if (off + count > dump->driver_dump.hdr.len) {
2454 count = dump->driver_dump.hdr.len - off;
2455 rc = count;
2456 }
2457
2458 if (count && off < sizeof(dump->driver_dump)) {
2459 if (off + count > sizeof(dump->driver_dump))
2460 len = sizeof(dump->driver_dump) - off;
2461 else
2462 len = count;
2463 src = (u8 *)&dump->driver_dump + off;
2464 memcpy(buf, src, len);
2465 buf += len;
2466 off += len;
2467 count -= len;
2468 }
2469
2470 off -= sizeof(dump->driver_dump);
2471
2472 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2473 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2474 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2475 else
2476 len = count;
2477 src = (u8 *)&dump->ioa_dump + off;
2478 memcpy(buf, src, len);
2479 buf += len;
2480 off += len;
2481 count -= len;
2482 }
2483
2484 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2485
2486 while (count) {
2487 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2488 len = PAGE_ALIGN(off) - off;
2489 else
2490 len = count;
2491 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2492 src += off & ~PAGE_MASK;
2493 memcpy(buf, src, len);
2494 buf += len;
2495 off += len;
2496 count -= len;
2497 }
2498
2499 kref_put(&dump->kref, ipr_release_dump);
2500 return rc;
2501}
2502
2503/**
2504 * ipr_alloc_dump - Prepare for adapter dump
2505 * @ioa_cfg: ioa config struct
2506 *
2507 * Return value:
2508 * 0 on success / other on failure
2509 **/
2510static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2511{
2512 struct ipr_dump *dump;
2513 unsigned long lock_flags = 0;
2514
2515 ENTER;
2516 dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL);
2517
2518 if (!dump) {
2519 ipr_err("Dump memory allocation failed\n");
2520 return -ENOMEM;
2521 }
2522
2523 memset(dump, 0, sizeof(struct ipr_dump));
2524 kref_init(&dump->kref);
2525 dump->ioa_cfg = ioa_cfg;
2526
2527 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2528
2529 if (INACTIVE != ioa_cfg->sdt_state) {
2530 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2531 kfree(dump);
2532 return 0;
2533 }
2534
2535 ioa_cfg->dump = dump;
2536 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2537 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2538 ioa_cfg->dump_taken = 1;
2539 schedule_work(&ioa_cfg->work_q);
2540 }
2541 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2542
2543 LEAVE;
2544 return 0;
2545}
2546
2547/**
2548 * ipr_free_dump - Free adapter dump memory
2549 * @ioa_cfg: ioa config struct
2550 *
2551 * Return value:
2552 * 0 on success / other on failure
2553 **/
2554static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
2555{
2556 struct ipr_dump *dump;
2557 unsigned long lock_flags = 0;
2558
2559 ENTER;
2560
2561 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2562 dump = ioa_cfg->dump;
2563 if (!dump) {
2564 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2565 return 0;
2566 }
2567
2568 ioa_cfg->dump = NULL;
2569 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2570
2571 kref_put(&dump->kref, ipr_release_dump);
2572
2573 LEAVE;
2574 return 0;
2575}
2576
2577/**
2578 * ipr_write_dump - Setup dump state of adapter
2579 * @kobj: kobject struct
2580 * @buf: buffer
2581 * @off: offset
2582 * @count: buffer size
2583 *
2584 * Return value:
2585 * number of bytes printed to buffer
2586 **/
2587static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
2588 loff_t off, size_t count)
2589{
2590 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2591 struct Scsi_Host *shost = class_to_shost(cdev);
2592 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2593 int rc;
2594
2595 if (!capable(CAP_SYS_ADMIN))
2596 return -EACCES;
2597
2598 if (buf[0] == '1')
2599 rc = ipr_alloc_dump(ioa_cfg);
2600 else if (buf[0] == '0')
2601 rc = ipr_free_dump(ioa_cfg);
2602 else
2603 return -EINVAL;
2604
2605 if (rc)
2606 return rc;
2607 else
2608 return count;
2609}
2610
2611static struct bin_attribute ipr_dump_attr = {
2612 .attr = {
2613 .name = "dump",
2614 .mode = S_IRUSR | S_IWUSR,
2615 },
2616 .size = 0,
2617 .read = ipr_read_dump,
2618 .write = ipr_write_dump
2619};
2620#else
2621static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
2622#endif
2623
2624/**
2625 * ipr_change_queue_depth - Change the device's queue depth
2626 * @sdev: scsi device struct
2627 * @qdepth: depth to set
2628 *
2629 * Return value:
2630 * actual depth set
2631 **/
2632static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
2633{
2634 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
2635 return sdev->queue_depth;
2636}
2637
2638/**
2639 * ipr_change_queue_type - Change the device's queue type
2640 * @dsev: scsi device struct
2641 * @tag_type: type of tags to use
2642 *
2643 * Return value:
2644 * actual queue type set
2645 **/
2646static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
2647{
2648 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2649 struct ipr_resource_entry *res;
2650 unsigned long lock_flags = 0;
2651
2652 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2653 res = (struct ipr_resource_entry *)sdev->hostdata;
2654
2655 if (res) {
2656 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
2657 /*
2658 * We don't bother quiescing the device here since the
2659 * adapter firmware does it for us.
2660 */
2661 scsi_set_tag_type(sdev, tag_type);
2662
2663 if (tag_type)
2664 scsi_activate_tcq(sdev, sdev->queue_depth);
2665 else
2666 scsi_deactivate_tcq(sdev, sdev->queue_depth);
2667 } else
2668 tag_type = 0;
2669 } else
2670 tag_type = 0;
2671
2672 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2673 return tag_type;
2674}
2675
2676/**
2677 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
2678 * @dev: device struct
2679 * @buf: buffer
2680 *
2681 * Return value:
2682 * number of bytes printed to buffer
2683 **/
10523b3b 2684static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
1da177e4
LT		 2685{
2686 struct scsi_device *sdev = to_scsi_device(dev);
2687 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2688 struct ipr_resource_entry *res;
2689 unsigned long lock_flags = 0;
2690 ssize_t len = -ENXIO;
2691
2692 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2693 res = (struct ipr_resource_entry *)sdev->hostdata;
2694 if (res)
2695 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
2696 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2697 return len;
2698}
2699
2700static struct device_attribute ipr_adapter_handle_attr = {
2701 .attr = {
2702 .name = "adapter_handle",
2703 .mode = S_IRUSR,
2704 },
2705 .show = ipr_show_adapter_handle
2706};
2707
2708static struct device_attribute *ipr_dev_attrs[] = {
2709 &ipr_adapter_handle_attr,
2710 NULL,
2711};
2712
2713/**
2714 * ipr_biosparam - Return the HSC mapping
2715 * @sdev: scsi device struct
2716 * @block_device: block device pointer
2717 * @capacity: capacity of the device
2718 * @parm: Array containing returned HSC values.
2719 *
2720 * This function generates the HSC parms that fdisk uses.
2721 * We want to make sure we return something that places partitions
2722 * on 4k boundaries for best performance with the IOA.
2723 *
2724 * Return value:
2725 * 0 on success
2726 **/
2727static int ipr_biosparam(struct scsi_device *sdev,
2728 struct block_device *block_device,
2729 sector_t capacity, int *parm)
2730{
2731 int heads, sectors;
2732 sector_t cylinders;
2733
2734 heads = 128;
2735 sectors = 32;
2736
2737 cylinders = capacity;
2738 sector_div(cylinders, (128 * 32));
2739
2740 /* return result */
2741 parm[0] = heads;
2742 parm[1] = sectors;
2743 parm[2] = cylinders;
2744
2745 return 0;
2746}
2747
2748/**
2749 * ipr_slave_destroy - Unconfigure a SCSI device
2750 * @sdev: scsi device struct
2751 *
2752 * Return value:
2753 * nothing
2754 **/
2755static void ipr_slave_destroy(struct scsi_device *sdev)
2756{
2757 struct ipr_resource_entry *res;
2758 struct ipr_ioa_cfg *ioa_cfg;
2759 unsigned long lock_flags = 0;
2760
2761 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2762
2763 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2764 res = (struct ipr_resource_entry *) sdev->hostdata;
2765 if (res) {
2766 sdev->hostdata = NULL;
2767 res->sdev = NULL;
2768 }
2769 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2770}
2771
2772/**
2773 * ipr_slave_configure - Configure a SCSI device
2774 * @sdev: scsi device struct
2775 *
2776 * This function configures the specified scsi device.
2777 *
2778 * Return value:
2779 * 0 on success
2780 **/
2781static int ipr_slave_configure(struct scsi_device *sdev)
2782{
2783 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2784 struct ipr_resource_entry *res;
2785 unsigned long lock_flags = 0;
2786
2787 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2788 res = sdev->hostdata;
2789 if (res) {
2790 if (ipr_is_af_dasd_device(res))
2791 sdev->type = TYPE_RAID;
0726ce26 2792 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
1da177e4 2793 sdev->scsi_level = 4;
0726ce26
BK		 2794 sdev->no_uld_attach = 1;
2795 }
1da177e4
LT		 2796 if (ipr_is_vset_device(res)) {
2797 sdev->timeout = IPR_VSET_RW_TIMEOUT;
2798 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
2799 }
2800 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
2801 sdev->allow_restart = 1;
2802 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
2803 }
2804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2805 return 0;
2806}
2807
2808/**
2809 * ipr_slave_alloc - Prepare for commands to a device.
2810 * @sdev: scsi device struct
2811 *
2812 * This function saves a pointer to the resource entry
2813 * in the scsi device struct if the device exists. We
2814 * can then use this pointer in ipr_queuecommand when
2815 * handling new commands.
2816 *
2817 * Return value:
692aebfc 2818 * 0 on success / -ENXIO if device does not exist
1da177e4
LT		 2819 **/
2820static int ipr_slave_alloc(struct scsi_device *sdev)
2821{
2822 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2823 struct ipr_resource_entry *res;
2824 unsigned long lock_flags;
692aebfc 2825 int rc = -ENXIO;
1da177e4
LT		 2826
2827 sdev->hostdata = NULL;
2828
2829 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2830
2831 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2832 if ((res->cfgte.res_addr.bus == sdev->channel) &&
2833 (res->cfgte.res_addr.target == sdev->id) &&
2834 (res->cfgte.res_addr.lun == sdev->lun)) {
2835 res->sdev = sdev;
2836 res->add_to_ml = 0;
2837 res->in_erp = 0;
2838 sdev->hostdata = res;
2839 res->needs_sync_complete = 1;
692aebfc 2840 rc = 0;
1da177e4
LT		 2841 break;
2842 }
2843 }
2844
2845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2846
692aebfc 2847 return rc;
1da177e4
LT		 2848}
2849
2850/**
2851 * ipr_eh_host_reset - Reset the host adapter
2852 * @scsi_cmd: scsi command struct
2853 *
2854 * Return value:
2855 * SUCCESS / FAILED
2856 **/
df0ae249 2857static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 2858{
2859 struct ipr_ioa_cfg *ioa_cfg;
2860 int rc;
2861
2862 ENTER;
2863 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2864
2865 dev_err(&ioa_cfg->pdev->dev,
2866 "Adapter being reset as a result of error recovery.\n");
2867
2868 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2869 ioa_cfg->sdt_state = GET_DUMP;
2870
2871 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2872
2873 LEAVE;
2874 return rc;
2875}
2876
df0ae249
JG		 2877static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
2878{
2879 int rc;
2880
2881 spin_lock_irq(cmd->device->host->host_lock);
2882 rc = __ipr_eh_host_reset(cmd);
2883 spin_unlock_irq(cmd->device->host->host_lock);
2884
2885 return rc;
2886}
2887
1da177e4
LT		 2888/**
2889 * ipr_eh_dev_reset - Reset the device
2890 * @scsi_cmd: scsi command struct
2891 *
2892 * This function issues a device reset to the affected device.
2893 * A LUN reset will be sent to the device first. If that does
2894 * not work, a target reset will be sent.
2895 *
2896 * Return value:
2897 * SUCCESS / FAILED
2898 **/
94d0e7b8 2899static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 2900{
2901 struct ipr_cmnd *ipr_cmd;
2902 struct ipr_ioa_cfg *ioa_cfg;
2903 struct ipr_resource_entry *res;
2904 struct ipr_cmd_pkt *cmd_pkt;
2905 u32 ioasc;
2906
2907 ENTER;
2908 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2909 res = scsi_cmd->device->hostdata;
2910
2911 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
2912 return FAILED;
2913
2914 /*
2915 * If we are currently going through reset/reload, return failed. This will force the
2916 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
2917 * reset to complete
2918 */
2919 if (ioa_cfg->in_reset_reload)
2920 return FAILED;
2921 if (ioa_cfg->ioa_is_dead)
2922 return FAILED;
2923
2924 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
2925 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
2926 if (ipr_cmd->scsi_cmd)
2927 ipr_cmd->done = ipr_scsi_eh_done;
2928 }
2929 }
2930
2931 res->resetting_device = 1;
2932
2933 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
2934
2935 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
2936 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
2937 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
2938 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
2939
2940 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
2941 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
2942
2943 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
2944
2945 res->resetting_device = 0;
2946
2947 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2948
2949 LEAVE;
2950 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
2951}
2952
94d0e7b8
JG		 2953static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
2954{
2955 int rc;
2956
2957 spin_lock_irq(cmd->device->host->host_lock);
2958 rc = __ipr_eh_dev_reset(cmd);
2959 spin_unlock_irq(cmd->device->host->host_lock);
2960
2961 return rc;
2962}
2963
1da177e4
LT		 2964/**
2965 * ipr_bus_reset_done - Op done function for bus reset.
2966 * @ipr_cmd: ipr command struct
2967 *
2968 * This function is the op done function for a bus reset
2969 *
2970 * Return value:
2971 * none
2972 **/
2973static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
2974{
2975 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2976 struct ipr_resource_entry *res;
2977
2978 ENTER;
2979 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2980 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
2981 sizeof(res->cfgte.res_handle))) {
2982 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
2983 break;
2984 }
2985 }
2986
2987 /*
2988 * If abort has not completed, indicate the reset has, else call the
2989 * abort's done function to wake the sleeping eh thread
2990 */
2991 if (ipr_cmd->sibling->sibling)
2992 ipr_cmd->sibling->sibling = NULL;
2993 else
2994 ipr_cmd->sibling->done(ipr_cmd->sibling);
2995
2996 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2997 LEAVE;
2998}
2999
3000/**
3001 * ipr_abort_timeout - An abort task has timed out
3002 * @ipr_cmd: ipr command struct
3003 *
3004 * This function handles when an abort task times out. If this
3005 * happens we issue a bus reset since we have resources tied
3006 * up that must be freed before returning to the midlayer.
3007 *
3008 * Return value:
3009 * none
3010 **/
3011static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3012{
3013 struct ipr_cmnd *reset_cmd;
3014 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3015 struct ipr_cmd_pkt *cmd_pkt;
3016 unsigned long lock_flags = 0;
3017
3018 ENTER;
3019 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3020 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3021 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3022 return;
3023 }
3024
3025 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3026 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3027 ipr_cmd->sibling = reset_cmd;
3028 reset_cmd->sibling = ipr_cmd;
3029 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3030 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3031 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3032 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3033 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3034
3035 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3036 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3037 LEAVE;
3038}
3039
3040/**
3041 * ipr_cancel_op - Cancel specified op
3042 * @scsi_cmd: scsi command struct
3043 *
3044 * This function cancels specified op.
3045 *
3046 * Return value:
3047 * SUCCESS / FAILED
3048 **/
3049static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3050{
3051 struct ipr_cmnd *ipr_cmd;
3052 struct ipr_ioa_cfg *ioa_cfg;
3053 struct ipr_resource_entry *res;
3054 struct ipr_cmd_pkt *cmd_pkt;
3055 u32 ioasc;
3056 int op_found = 0;
3057
3058 ENTER;
3059 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3060 res = scsi_cmd->device->hostdata;
3061
8fa728a2
JG		 3062 /* If we are currently going through reset/reload, return failed.
3063 * This will force the mid-layer to call ipr_eh_host_reset,
3064 * which will then go to sleep and wait for the reset to complete
3065 */
3066 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3067 return FAILED;
1da177e4
LT		 3068 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3069 return FAILED;
3070
3071 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3072 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3073 ipr_cmd->done = ipr_scsi_eh_done;
3074 op_found = 1;
3075 break;
3076 }
3077 }
3078
3079 if (!op_found)
3080 return SUCCESS;
3081
3082 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3083 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3084 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3085 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3086 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3087 ipr_cmd->u.sdev = scsi_cmd->device;
3088
3089 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3090 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3091 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3092
3093 /*
3094 * If the abort task timed out and we sent a bus reset, we will get
3095 * one the following responses to the abort
3096 */
3097 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3098 ioasc = 0;
3099 ipr_trace;
3100 }
3101
3102 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3103 res->needs_sync_complete = 1;
3104
3105 LEAVE;
3106 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3107}
3108
3109/**
3110 * ipr_eh_abort - Abort a single op
3111 * @scsi_cmd: scsi command struct
3112 *
3113 * Return value:
3114 * SUCCESS / FAILED
3115 **/
3116static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3117{
8fa728a2
JG		 3118 unsigned long flags;
3119 int rc;
1da177e4
LT		 3120
3121 ENTER;
1da177e4 3122
8fa728a2
JG		 3123 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3124 rc = ipr_cancel_op(scsi_cmd);
3125 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 3126
3127 LEAVE;
8fa728a2 3128 return rc;
1da177e4
LT		 3129}
3130
3131/**
3132 * ipr_handle_other_interrupt - Handle "other" interrupts
3133 * @ioa_cfg: ioa config struct
3134 * @int_reg: interrupt register
3135 *
3136 * Return value:
3137 * IRQ_NONE / IRQ_HANDLED
3138 **/
3139static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3140 volatile u32 int_reg)
3141{
3142 irqreturn_t rc = IRQ_HANDLED;
3143
3144 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3145 /* Mask the interrupt */
3146 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3147
3148 /* Clear the interrupt */
3149 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3150 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3151
3152 list_del(&ioa_cfg->reset_cmd->queue);
3153 del_timer(&ioa_cfg->reset_cmd->timer);
3154 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3155 } else {
3156 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3157 ioa_cfg->ioa_unit_checked = 1;
3158 else
3159 dev_err(&ioa_cfg->pdev->dev,
3160 "Permanent IOA failure. 0x%08X\n", int_reg);
3161
3162 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3163 ioa_cfg->sdt_state = GET_DUMP;
3164
3165 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3166 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3167 }
3168
3169 return rc;
3170}
3171
3172/**
3173 * ipr_isr - Interrupt service routine
3174 * @irq: irq number
3175 * @devp: pointer to ioa config struct
3176 * @regs: pt_regs struct
3177 *
3178 * Return value:
3179 * IRQ_NONE / IRQ_HANDLED
3180 **/
3181static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3182{
3183 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3184 unsigned long lock_flags = 0;
3185 volatile u32 int_reg, int_mask_reg;
3186 u32 ioasc;
3187 u16 cmd_index;
3188 struct ipr_cmnd *ipr_cmd;
3189 irqreturn_t rc = IRQ_NONE;
3190
3191 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3192
3193 /* If interrupts are disabled, ignore the interrupt */
3194 if (!ioa_cfg->allow_interrupts) {
3195 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3196 return IRQ_NONE;
3197 }
3198
3199 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3200 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3201
3202 /* If an interrupt on the adapter did not occur, ignore it */
3203 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3204 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3205 return IRQ_NONE;
3206 }
3207
3208 while (1) {
3209 ipr_cmd = NULL;
3210
3211 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3212 ioa_cfg->toggle_bit) {
3213
3214 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3215 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3216
3217 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3218 ioa_cfg->errors_logged++;
3219 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3220
3221 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3222 ioa_cfg->sdt_state = GET_DUMP;
3223
3224 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3225 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3226 return IRQ_HANDLED;
3227 }
3228
3229 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3230
3231 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3232
3233 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3234
3235 list_del(&ipr_cmd->queue);
3236 del_timer(&ipr_cmd->timer);
3237 ipr_cmd->done(ipr_cmd);
3238
3239 rc = IRQ_HANDLED;
3240
3241 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3242 ioa_cfg->hrrq_curr++;
3243 } else {
3244 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3245 ioa_cfg->toggle_bit ^= 1u;
3246 }
3247 }
3248
3249 if (ipr_cmd != NULL) {
3250 /* Clear the PCI interrupt */
3251 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3252 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3253 } else
3254 break;
3255 }
3256
3257 if (unlikely(rc == IRQ_NONE))
3258 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3259
3260 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3261 return rc;
3262}
3263
3264/**
3265 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3266 * @ioa_cfg: ioa config struct
3267 * @ipr_cmd: ipr command struct
3268 *
3269 * Return value:
3270 * 0 on success / -1 on failure
3271 **/
3272static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3273 struct ipr_cmnd *ipr_cmd)
3274{
3275 int i;
3276 struct scatterlist *sglist;
3277 u32 length;
3278 u32 ioadl_flags = 0;
3279 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3280 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3281 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3282
3283 length = scsi_cmd->request_bufflen;
3284
3285 if (length == 0)
3286 return 0;
3287
3288 if (scsi_cmd->use_sg) {
3289 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3290 scsi_cmd->request_buffer,
3291 scsi_cmd->use_sg,
3292 scsi_cmd->sc_data_direction);
3293
3294 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3295 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3296 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3297 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3298 ioarcb->write_ioadl_len =
3299 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3300 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3301 ioadl_flags = IPR_IOADL_FLAGS_READ;
3302 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3303 ioarcb->read_ioadl_len =
3304 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3305 }
3306
3307 sglist = scsi_cmd->request_buffer;
3308
3309 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3310 ioadl[i].flags_and_data_len =
3311 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3312 ioadl[i].address =
3313 cpu_to_be32(sg_dma_address(&sglist[i]));
3314 }
3315
3316 if (likely(ipr_cmd->dma_use_sg)) {
3317 ioadl[i-1].flags_and_data_len |=
3318 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3319 return 0;
3320 } else
3321 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3322 } else {
3323 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3324 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3325 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3326 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3327 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3328 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3329 ioadl_flags = IPR_IOADL_FLAGS_READ;
3330 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3331 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3332 }
3333
3334 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3335 scsi_cmd->request_buffer, length,
3336 scsi_cmd->sc_data_direction);
3337
3338 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3339 ipr_cmd->dma_use_sg = 1;
3340 ioadl[0].flags_and_data_len =
3341 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3342 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3343 return 0;
3344 } else
3345 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3346 }
3347
3348 return -1;
3349}
3350
3351/**
3352 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3353 * @scsi_cmd: scsi command struct
3354 *
3355 * Return value:
3356 * task attributes
3357 **/
3358static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3359{
3360 u8 tag[2];
3361 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3362
3363 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3364 switch (tag[0]) {
3365 case MSG_SIMPLE_TAG:
3366 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3367 break;
3368 case MSG_HEAD_TAG:
3369 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3370 break;
3371 case MSG_ORDERED_TAG:
3372 rc = IPR_FLAGS_LO_ORDERED_TASK;
3373 break;
3374 };
3375 }
3376
3377 return rc;
3378}
3379
3380/**
3381 * ipr_erp_done - Process completion of ERP for a device
3382 * @ipr_cmd: ipr command struct
3383 *
3384 * This function copies the sense buffer into the scsi_cmd
3385 * struct and pushes the scsi_done function.
3386 *
3387 * Return value:
3388 * nothing
3389 **/
3390static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3391{
3392 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3393 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3394 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3395 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3396
3397 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3398 scsi_cmd->result |= (DID_ERROR << 16);
3399 ipr_sdev_err(scsi_cmd->device,
3400 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3401 } else {
3402 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3403 SCSI_SENSE_BUFFERSIZE);
3404 }
3405
3406 if (res) {
3407 res->needs_sync_complete = 1;
3408 res->in_erp = 0;
3409 }
3410 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3411 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3412 scsi_cmd->scsi_done(scsi_cmd);
3413}
3414
3415/**
3416 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3417 * @ipr_cmd: ipr command struct
3418 *
3419 * Return value:
3420 * none
3421 **/
3422static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3423{
3424 struct ipr_ioarcb *ioarcb;
3425 struct ipr_ioasa *ioasa;
3426
3427 ioarcb = &ipr_cmd->ioarcb;
3428 ioasa = &ipr_cmd->ioasa;
3429
3430 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3431 ioarcb->write_data_transfer_length = 0;
3432 ioarcb->read_data_transfer_length = 0;
3433 ioarcb->write_ioadl_len = 0;
3434 ioarcb->read_ioadl_len = 0;
3435 ioasa->ioasc = 0;
3436 ioasa->residual_data_len = 0;
3437}
3438
3439/**
3440 * ipr_erp_request_sense - Send request sense to a device
3441 * @ipr_cmd: ipr command struct
3442 *
3443 * This function sends a request sense to a device as a result
3444 * of a check condition.
3445 *
3446 * Return value:
3447 * nothing
3448 **/
3449static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3450{
3451 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3452 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3453
3454 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3455 ipr_erp_done(ipr_cmd);
3456 return;
3457 }
3458
3459 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3460
3461 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3462 cmd_pkt->cdb[0] = REQUEST_SENSE;
3463 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3464 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3465 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3466 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3467
3468 ipr_cmd->ioadl[0].flags_and_data_len =
3469 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3470 ipr_cmd->ioadl[0].address =
3471 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3472
3473 ipr_cmd->ioarcb.read_ioadl_len =
3474 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3475 ipr_cmd->ioarcb.read_data_transfer_length =
3476 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3477
3478 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3479 IPR_REQUEST_SENSE_TIMEOUT * 2);
3480}
3481
3482/**
3483 * ipr_erp_cancel_all - Send cancel all to a device
3484 * @ipr_cmd: ipr command struct
3485 *
3486 * This function sends a cancel all to a device to clear the
3487 * queue. If we are running TCQ on the device, QERR is set to 1,
3488 * which means all outstanding ops have been dropped on the floor.
3489 * Cancel all will return them to us.
3490 *
3491 * Return value:
3492 * nothing
3493 **/
3494static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3495{
3496 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3497 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3498 struct ipr_cmd_pkt *cmd_pkt;
3499
3500 res->in_erp = 1;
3501
3502 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3503
3504 if (!scsi_get_tag_type(scsi_cmd->device)) {
3505 ipr_erp_request_sense(ipr_cmd);
3506 return;
3507 }
3508
3509 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3510 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3511 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3512
3513 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3514 IPR_CANCEL_ALL_TIMEOUT);
3515}
3516
3517/**
3518 * ipr_dump_ioasa - Dump contents of IOASA
3519 * @ioa_cfg: ioa config struct
3520 * @ipr_cmd: ipr command struct
3521 *
3522 * This function is invoked by the interrupt handler when ops
3523 * fail. It will log the IOASA if appropriate. Only called
3524 * for GPDD ops.
3525 *
3526 * Return value:
3527 * none
3528 **/
3529static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3530 struct ipr_cmnd *ipr_cmd)
3531{
3532 int i;
3533 u16 data_len;
3534 u32 ioasc;
3535 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3536 __be32 *ioasa_data = (__be32 *)ioasa;
3537 int error_index;
3538
3539 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3540
3541 if (0 == ioasc)
3542 return;
3543
3544 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3545 return;
3546
3547 error_index = ipr_get_error(ioasc);
3548
3549 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3550 /* Don't log an error if the IOA already logged one */
3551 if (ioasa->ilid != 0)
3552 return;
3553
3554 if (ipr_error_table[error_index].log_ioasa == 0)
3555 return;
3556 }
3557
3558 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3559 ipr_error_table[error_index].error);
3560
3561 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3562 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3563 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3564 "Device End state: %s Phase: %s\n",
3565 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3566 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3567 }
3568
3569 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3570 data_len = sizeof(struct ipr_ioasa);
3571 else
3572 data_len = be16_to_cpu(ioasa->ret_stat_len);
3573
3574 ipr_err("IOASA Dump:\n");
3575
3576 for (i = 0; i < data_len / 4; i += 4) {
3577 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3578 be32_to_cpu(ioasa_data[i]),
3579 be32_to_cpu(ioasa_data[i+1]),
3580 be32_to_cpu(ioasa_data[i+2]),
3581 be32_to_cpu(ioasa_data[i+3]));
3582 }
3583}
3584
3585/**
3586 * ipr_gen_sense - Generate SCSI sense data from an IOASA
3587 * @ioasa: IOASA
3588 * @sense_buf: sense data buffer
3589 *
3590 * Return value:
3591 * none
3592 **/
3593static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
3594{
3595 u32 failing_lba;
3596 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
3597 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
3598 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3599 u32 ioasc = be32_to_cpu(ioasa->ioasc);
3600
3601 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
3602
3603 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
3604 return;
3605
3606 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
3607
3608 if (ipr_is_vset_device(res) &&
3609 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
3610 ioasa->u.vset.failing_lba_hi != 0) {
3611 sense_buf[0] = 0x72;
3612 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
3613 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
3614 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
3615
3616 sense_buf[7] = 12;
3617 sense_buf[8] = 0;
3618 sense_buf[9] = 0x0A;
3619 sense_buf[10] = 0x80;
3620
3621 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
3622
3623 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
3624 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
3625 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
3626 sense_buf[15] = failing_lba & 0x000000ff;
3627
3628 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3629
3630 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
3631 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
3632 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
3633 sense_buf[19] = failing_lba & 0x000000ff;
3634 } else {
3635 sense_buf[0] = 0x70;
3636 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
3637 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
3638 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
3639
3640 /* Illegal request */
3641 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
3642 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
3643 sense_buf[7] = 10; /* additional length */
3644
3645 /* IOARCB was in error */
3646 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
3647 sense_buf[15] = 0xC0;
3648 else /* Parameter data was invalid */
3649 sense_buf[15] = 0x80;
3650
3651 sense_buf[16] =
3652 ((IPR_FIELD_POINTER_MASK &
3653 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
3654 sense_buf[17] =
3655 (IPR_FIELD_POINTER_MASK &
3656 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
3657 } else {
3658 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
3659 if (ipr_is_vset_device(res))
3660 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3661 else
3662 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
3663
3664 sense_buf[0] |= 0x80; /* Or in the Valid bit */
3665 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
3666 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
3667 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
3668 sense_buf[6] = failing_lba & 0x000000ff;
3669 }
3670
3671 sense_buf[7] = 6; /* additional length */
3672 }
3673 }
3674}
3675
3676/**
3677 * ipr_erp_start - Process an error response for a SCSI op
3678 * @ioa_cfg: ioa config struct
3679 * @ipr_cmd: ipr command struct
3680 *
3681 * This function determines whether or not to initiate ERP
3682 * on the affected device.
3683 *
3684 * Return value:
3685 * nothing
3686 **/
3687static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
3688 struct ipr_cmnd *ipr_cmd)
3689{
3690 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3691 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3692 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3693
3694 if (!res) {
3695 ipr_scsi_eh_done(ipr_cmd);
3696 return;
3697 }
3698
3699 if (ipr_is_gscsi(res))
3700 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
3701 else
3702 ipr_gen_sense(ipr_cmd);
3703
3704 switch (ioasc & IPR_IOASC_IOASC_MASK) {
3705 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
3706 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3707 break;
3708 case IPR_IOASC_IR_RESOURCE_HANDLE:
3709 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3710 break;
3711 case IPR_IOASC_HW_SEL_TIMEOUT:
3712 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3713 res->needs_sync_complete = 1;
3714 break;
3715 case IPR_IOASC_SYNC_REQUIRED:
3716 if (!res->in_erp)
3717 res->needs_sync_complete = 1;
3718 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3719 break;
3720 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
3721 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
3722 break;
3723 case IPR_IOASC_BUS_WAS_RESET:
3724 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
3725 /*
3726 * Report the bus reset and ask for a retry. The device
3727 * will give CC/UA the next command.
3728 */
3729 if (!res->resetting_device)
3730 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
3731 scsi_cmd->result |= (DID_ERROR << 16);
3732 res->needs_sync_complete = 1;
3733 break;
3734 case IPR_IOASC_HW_DEV_BUS_STATUS:
3735 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
3736 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
3737 ipr_erp_cancel_all(ipr_cmd);
3738 return;
3739 }
3740 res->needs_sync_complete = 1;
3741 break;
3742 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
3743 break;
3744 default:
3745 scsi_cmd->result |= (DID_ERROR << 16);
3746 if (!ipr_is_vset_device(res))
3747 res->needs_sync_complete = 1;
3748 break;
3749 }
3750
3751 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3752 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3753 scsi_cmd->scsi_done(scsi_cmd);
3754}
3755
3756/**
3757 * ipr_scsi_done - mid-layer done function
3758 * @ipr_cmd: ipr command struct
3759 *
3760 * This function is invoked by the interrupt handler for
3761 * ops generated by the SCSI mid-layer
3762 *
3763 * Return value:
3764 * none
3765 **/
3766static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
3767{
3768 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3769 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3770 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3771
3772 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
3773
3774 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
3775 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3776 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3777 scsi_cmd->scsi_done(scsi_cmd);
3778 } else
3779 ipr_erp_start(ioa_cfg, ipr_cmd);
3780}
3781
3782/**
3783 * ipr_save_ioafp_mode_select - Save adapters mode select data
3784 * @ioa_cfg: ioa config struct
3785 * @scsi_cmd: scsi command struct
3786 *
3787 * This function saves mode select data for the adapter to
3788 * use following an adapter reset.
3789 *
3790 * Return value:
3791 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
3792 **/
3793static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
3794 struct scsi_cmnd *scsi_cmd)
3795{
3796 if (!ioa_cfg->saved_mode_pages) {
3797 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages),
3798 GFP_ATOMIC);
3799 if (!ioa_cfg->saved_mode_pages) {
3800 dev_err(&ioa_cfg->pdev->dev,
3801 "IOA mode select buffer allocation failed\n");
3802 return SCSI_MLQUEUE_HOST_BUSY;
3803 }
3804 }
3805
3806 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
3807 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
3808 return 0;
3809}
3810
3811/**
3812 * ipr_queuecommand - Queue a mid-layer request
3813 * @scsi_cmd: scsi command struct
3814 * @done: done function
3815 *
3816 * This function queues a request generated by the mid-layer.
3817 *
3818 * Return value:
3819 * 0 on success
3820 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
3821 * SCSI_MLQUEUE_HOST_BUSY if host is busy
3822 **/
3823static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
3824 void (*done) (struct scsi_cmnd *))
3825{
3826 struct ipr_ioa_cfg *ioa_cfg;
3827 struct ipr_resource_entry *res;
3828 struct ipr_ioarcb *ioarcb;
3829 struct ipr_cmnd *ipr_cmd;
3830 int rc = 0;
3831
3832 scsi_cmd->scsi_done = done;
3833 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3834 res = scsi_cmd->device->hostdata;
3835 scsi_cmd->result = (DID_OK << 16);
3836
3837 /*
3838 * We are currently blocking all devices due to a host reset
3839 * We have told the host to stop giving us new requests, but
3840 * ERP ops don't count. FIXME
3841 */
3842 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
3843 return SCSI_MLQUEUE_HOST_BUSY;
3844
3845 /*
3846 * FIXME - Create scsi_set_host_offline interface
3847 * and the ioa_is_dead check can be removed
3848 */
3849 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
3850 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3851 scsi_cmd->result = (DID_NO_CONNECT << 16);
3852 scsi_cmd->scsi_done(scsi_cmd);
3853 return 0;
3854 }
3855
3856 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3857 ioarcb = &ipr_cmd->ioarcb;
3858 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
3859
3860 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
3861 ipr_cmd->scsi_cmd = scsi_cmd;
3862 ioarcb->res_handle = res->cfgte.res_handle;
3863 ipr_cmd->done = ipr_scsi_done;
3864 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
3865
3866 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
3867 if (scsi_cmd->underflow == 0)
3868 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3869
3870 if (res->needs_sync_complete) {
3871 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
3872 res->needs_sync_complete = 0;
3873 }
3874
3875 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
3876 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
3877 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
3878 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
3879 }
3880
3881 if (scsi_cmd->cmnd[0] >= 0xC0 &&
3882 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
3883 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
3884
3885 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
3886 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
3887
3888 if (likely(rc == 0))
3889 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
3890
3891 if (likely(rc == 0)) {
3892 mb();
3893 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
3894 ioa_cfg->regs.ioarrin_reg);
3895 } else {
3896 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3897 return SCSI_MLQUEUE_HOST_BUSY;
3898 }
3899
3900 return 0;
3901}
3902
3903/**
3904 * ipr_info - Get information about the card/driver
3905 * @scsi_host: scsi host struct
3906 *
3907 * Return value:
3908 * pointer to buffer with description string
3909 **/
3910static const char * ipr_ioa_info(struct Scsi_Host *host)
3911{
3912 static char buffer[512];
3913 struct ipr_ioa_cfg *ioa_cfg;
3914 unsigned long lock_flags = 0;
3915
3916 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
3917
3918 spin_lock_irqsave(host->host_lock, lock_flags);
3919 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
3920 spin_unlock_irqrestore(host->host_lock, lock_flags);
3921
3922 return buffer;
3923}
3924
3925static struct scsi_host_template driver_template = {
3926 .module = THIS_MODULE,
3927 .name = "IPR",
3928 .info = ipr_ioa_info,
3929 .queuecommand = ipr_queuecommand,
3930 .eh_abort_handler = ipr_eh_abort,
3931 .eh_device_reset_handler = ipr_eh_dev_reset,
3932 .eh_host_reset_handler = ipr_eh_host_reset,
3933 .slave_alloc = ipr_slave_alloc,
3934 .slave_configure = ipr_slave_configure,
3935 .slave_destroy = ipr_slave_destroy,
3936 .change_queue_depth = ipr_change_queue_depth,
3937 .change_queue_type = ipr_change_queue_type,
3938 .bios_param = ipr_biosparam,
3939 .can_queue = IPR_MAX_COMMANDS,
3940 .this_id = -1,
3941 .sg_tablesize = IPR_MAX_SGLIST,
3942 .max_sectors = IPR_IOA_MAX_SECTORS,
3943 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
3944 .use_clustering = ENABLE_CLUSTERING,
3945 .shost_attrs = ipr_ioa_attrs,
3946 .sdev_attrs = ipr_dev_attrs,
3947 .proc_name = IPR_NAME
3948};
3949
3950#ifdef CONFIG_PPC_PSERIES
3951static const u16 ipr_blocked_processors[] = {
3952 PV_NORTHSTAR,
3953 PV_PULSAR,
3954 PV_POWER4,
3955 PV_ICESTAR,
3956 PV_SSTAR,
3957 PV_POWER4p,
3958 PV_630,
3959 PV_630p
3960};
3961
3962/**
3963 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
3964 * @ioa_cfg: ioa cfg struct
3965 *
3966 * Adapters that use Gemstone revision < 3.1 do not work reliably on
3967 * certain pSeries hardware. This function determines if the given
3968 * adapter is in one of these confgurations or not.
3969 *
3970 * Return value:
3971 * 1 if adapter is not supported / 0 if adapter is supported
3972 **/
3973static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
3974{
3975 u8 rev_id;
3976 int i;
3977
3978 if (ioa_cfg->type == 0x5702) {
3979 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
3980 &rev_id) == PCIBIOS_SUCCESSFUL) {
3981 if (rev_id < 4) {
3982 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
3983 if (__is_processor(ipr_blocked_processors[i]))
3984 return 1;
3985 }
3986 }
3987 }
3988 }
3989 return 0;
3990}
3991#else
3992#define ipr_invalid_adapter(ioa_cfg) 0
3993#endif
3994
3995/**
3996 * ipr_ioa_bringdown_done - IOA bring down completion.
3997 * @ipr_cmd: ipr command struct
3998 *
3999 * This function processes the completion of an adapter bring down.
4000 * It wakes any reset sleepers.
4001 *
4002 * Return value:
4003 * IPR_RC_JOB_RETURN
4004 **/
4005static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4006{
4007 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4008
4009 ENTER;
4010 ioa_cfg->in_reset_reload = 0;
4011 ioa_cfg->reset_retries = 0;
4012 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4013 wake_up_all(&ioa_cfg->reset_wait_q);
4014
4015 spin_unlock_irq(ioa_cfg->host->host_lock);
4016 scsi_unblock_requests(ioa_cfg->host);
4017 spin_lock_irq(ioa_cfg->host->host_lock);
4018 LEAVE;
4019
4020 return IPR_RC_JOB_RETURN;
4021}
4022
4023/**
4024 * ipr_ioa_reset_done - IOA reset completion.
4025 * @ipr_cmd: ipr command struct
4026 *
4027 * This function processes the completion of an adapter reset.
4028 * It schedules any necessary mid-layer add/removes and
4029 * wakes any reset sleepers.
4030 *
4031 * Return value:
4032 * IPR_RC_JOB_RETURN
4033 **/
4034static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4035{
4036 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4037 struct ipr_resource_entry *res;
4038 struct ipr_hostrcb *hostrcb, *temp;
4039 int i = 0;
4040
4041 ENTER;
4042 ioa_cfg->in_reset_reload = 0;
4043 ioa_cfg->allow_cmds = 1;
4044 ioa_cfg->reset_cmd = NULL;
4045
4046 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4047 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4048 ipr_trace;
4049 break;
4050 }
4051 }
4052 schedule_work(&ioa_cfg->work_q);
4053
4054 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4055 list_del(&hostrcb->queue);
4056 if (i++ < IPR_NUM_LOG_HCAMS)
4057 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4058 else
4059 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4060 }
4061
4062 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4063
4064 ioa_cfg->reset_retries = 0;
4065 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4066 wake_up_all(&ioa_cfg->reset_wait_q);
4067
4068 spin_unlock_irq(ioa_cfg->host->host_lock);
4069 scsi_unblock_requests(ioa_cfg->host);
4070 spin_lock_irq(ioa_cfg->host->host_lock);
4071
4072 if (!ioa_cfg->allow_cmds)
4073 scsi_block_requests(ioa_cfg->host);
4074
4075 LEAVE;
4076 return IPR_RC_JOB_RETURN;
4077}
4078
4079/**
4080 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4081 * @supported_dev: supported device struct
4082 * @vpids: vendor product id struct
4083 *
4084 * Return value:
4085 * none
4086 **/
4087static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4088 struct ipr_std_inq_vpids *vpids)
4089{
4090 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4091 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4092 supported_dev->num_records = 1;
4093 supported_dev->data_length =
4094 cpu_to_be16(sizeof(struct ipr_supported_device));
4095 supported_dev->reserved = 0;
4096}
4097
4098/**
4099 * ipr_set_supported_devs - Send Set Supported Devices for a device
4100 * @ipr_cmd: ipr command struct
4101 *
4102 * This function send a Set Supported Devices to the adapter
4103 *
4104 * Return value:
4105 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4106 **/
4107static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4108{
4109 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4110 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4111 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4112 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4113 struct ipr_resource_entry *res = ipr_cmd->u.res;
4114
4115 ipr_cmd->job_step = ipr_ioa_reset_done;
4116
4117 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
d0ad6f50 4118 if (!IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
1da177e4
LT		 4119 continue;
4120
4121 ipr_cmd->u.res = res;
4122 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4123
4124 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4125 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4126 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4127
4128 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4129 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4130 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4131
4132 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4133 sizeof(struct ipr_supported_device));
4134 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4135 offsetof(struct ipr_misc_cbs, supp_dev));
4136 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4137 ioarcb->write_data_transfer_length =
4138 cpu_to_be32(sizeof(struct ipr_supported_device));
4139
4140 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4141 IPR_SET_SUP_DEVICE_TIMEOUT);
4142
4143 ipr_cmd->job_step = ipr_set_supported_devs;
4144 return IPR_RC_JOB_RETURN;
4145 }
4146
4147 return IPR_RC_JOB_CONTINUE;
4148}
4149
4150/**
4151 * ipr_get_mode_page - Locate specified mode page
4152 * @mode_pages: mode page buffer
4153 * @page_code: page code to find
4154 * @len: minimum required length for mode page
4155 *
4156 * Return value:
4157 * pointer to mode page / NULL on failure
4158 **/
4159static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4160 u32 page_code, u32 len)
4161{
4162 struct ipr_mode_page_hdr *mode_hdr;
4163 u32 page_length;
4164 u32 length;
4165
4166 if (!mode_pages || (mode_pages->hdr.length == 0))
4167 return NULL;
4168
4169 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4170 mode_hdr = (struct ipr_mode_page_hdr *)
4171 (mode_pages->data + mode_pages->hdr.block_desc_len);
4172
4173 while (length) {
4174 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4175 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4176 return mode_hdr;
4177 break;
4178 } else {
4179 page_length = (sizeof(struct ipr_mode_page_hdr) +
4180 mode_hdr->page_length);
4181 length -= page_length;
4182 mode_hdr = (struct ipr_mode_page_hdr *)
4183 ((unsigned long)mode_hdr + page_length);
4184 }
4185 }
4186 return NULL;
4187}
4188
4189/**
4190 * ipr_check_term_power - Check for term power errors
4191 * @ioa_cfg: ioa config struct
4192 * @mode_pages: IOAFP mode pages buffer
4193 *
4194 * Check the IOAFP's mode page 28 for term power errors
4195 *
4196 * Return value:
4197 * nothing
4198 **/
4199static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4200 struct ipr_mode_pages *mode_pages)
4201{
4202 int i;
4203 int entry_length;
4204 struct ipr_dev_bus_entry *bus;
4205 struct ipr_mode_page28 *mode_page;
4206
4207 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4208 sizeof(struct ipr_mode_page28));
4209
4210 entry_length = mode_page->entry_length;
4211
4212 bus = mode_page->bus;
4213
4214 for (i = 0; i < mode_page->num_entries; i++) {
4215 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4216 dev_err(&ioa_cfg->pdev->dev,
4217 "Term power is absent on scsi bus %d\n",
4218 bus->res_addr.bus);
4219 }
4220
4221 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4222 }
4223}
4224
4225/**
4226 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4227 * @ioa_cfg: ioa config struct
4228 *
4229 * Looks through the config table checking for SES devices. If
4230 * the SES device is in the SES table indicating a maximum SCSI
4231 * bus speed, the speed is limited for the bus.
4232 *
4233 * Return value:
4234 * none
4235 **/
4236static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4237{
4238 u32 max_xfer_rate;
4239 int i;
4240
4241 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4242 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4243 ioa_cfg->bus_attr[i].bus_width);
4244
4245 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4246 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4247 }
4248}
4249
4250/**
4251 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4252 * @ioa_cfg: ioa config struct
4253 * @mode_pages: mode page 28 buffer
4254 *
4255 * Updates mode page 28 based on driver configuration
4256 *
4257 * Return value:
4258 * none
4259 **/
4260static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4261 struct ipr_mode_pages *mode_pages)
4262{
4263 int i, entry_length;
4264 struct ipr_dev_bus_entry *bus;
4265 struct ipr_bus_attributes *bus_attr;
4266 struct ipr_mode_page28 *mode_page;
4267
4268 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4269 sizeof(struct ipr_mode_page28));
4270
4271 entry_length = mode_page->entry_length;
4272
4273 /* Loop for each device bus entry */
4274 for (i = 0, bus = mode_page->bus;
4275 i < mode_page->num_entries;
4276 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4277 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4278 dev_err(&ioa_cfg->pdev->dev,
4279 "Invalid resource address reported: 0x%08X\n",
4280 IPR_GET_PHYS_LOC(bus->res_addr));
4281 continue;
4282 }
4283
4284 bus_attr = &ioa_cfg->bus_attr[i];
4285 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4286 bus->bus_width = bus_attr->bus_width;
4287 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4288 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4289 if (bus_attr->qas_enabled)
4290 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4291 else
4292 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4293 }
4294}
4295
4296/**
4297 * ipr_build_mode_select - Build a mode select command
4298 * @ipr_cmd: ipr command struct
4299 * @res_handle: resource handle to send command to
4300 * @parm: Byte 2 of Mode Sense command
4301 * @dma_addr: DMA buffer address
4302 * @xfer_len: data transfer length
4303 *
4304 * Return value:
4305 * none
4306 **/
4307static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4308 __be32 res_handle, u8 parm, u32 dma_addr,
4309 u8 xfer_len)
4310{
4311 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4312 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4313
4314 ioarcb->res_handle = res_handle;
4315 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4316 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4317 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4318 ioarcb->cmd_pkt.cdb[1] = parm;
4319 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4320
4321 ioadl->flags_and_data_len =
4322 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4323 ioadl->address = cpu_to_be32(dma_addr);
4324 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4325 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4326}
4327
4328/**
4329 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4330 * @ipr_cmd: ipr command struct
4331 *
4332 * This function sets up the SCSI bus attributes and sends
4333 * a Mode Select for Page 28 to activate them.
4334 *
4335 * Return value:
4336 * IPR_RC_JOB_RETURN
4337 **/
4338static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4339{
4340 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4341 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4342 int length;
4343
4344 ENTER;
4345 if (ioa_cfg->saved_mode_pages) {
4346 memcpy(mode_pages, ioa_cfg->saved_mode_pages,
4347 ioa_cfg->saved_mode_page_len);
4348 length = ioa_cfg->saved_mode_page_len;
4349 } else {
4350 ipr_scsi_bus_speed_limit(ioa_cfg);
4351 ipr_check_term_power(ioa_cfg, mode_pages);
4352 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4353 length = mode_pages->hdr.length + 1;
4354 mode_pages->hdr.length = 0;
4355 }
4356
4357 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4358 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4359 length);
4360
4361 ipr_cmd->job_step = ipr_set_supported_devs;
4362 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4363 struct ipr_resource_entry, queue);
4364
4365 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4366
4367 LEAVE;
4368 return IPR_RC_JOB_RETURN;
4369}
4370
4371/**
4372 * ipr_build_mode_sense - Builds a mode sense command
4373 * @ipr_cmd: ipr command struct
4374 * @res: resource entry struct
4375 * @parm: Byte 2 of mode sense command
4376 * @dma_addr: DMA address of mode sense buffer
4377 * @xfer_len: Size of DMA buffer
4378 *
4379 * Return value:
4380 * none
4381 **/
4382static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4383 __be32 res_handle,
4384 u8 parm, u32 dma_addr, u8 xfer_len)
4385{
4386 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4387 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4388
4389 ioarcb->res_handle = res_handle;
4390 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4391 ioarcb->cmd_pkt.cdb[2] = parm;
4392 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4393 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4394
4395 ioadl->flags_and_data_len =
4396 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4397 ioadl->address = cpu_to_be32(dma_addr);
4398 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4399 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4400}
4401
4402/**
4403 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4404 * @ipr_cmd: ipr command struct
4405 *
4406 * This function send a Page 28 mode sense to the IOA to
4407 * retrieve SCSI bus attributes.
4408 *
4409 * Return value:
4410 * IPR_RC_JOB_RETURN
4411 **/
4412static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4413{
4414 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4415
4416 ENTER;
4417 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4418 0x28, ioa_cfg->vpd_cbs_dma +
4419 offsetof(struct ipr_misc_cbs, mode_pages),
4420 sizeof(struct ipr_mode_pages));
4421
4422 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
4423
4424 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4425
4426 LEAVE;
4427 return IPR_RC_JOB_RETURN;
4428}
4429
4430/**
4431 * ipr_init_res_table - Initialize the resource table
4432 * @ipr_cmd: ipr command struct
4433 *
4434 * This function looks through the existing resource table, comparing
4435 * it with the config table. This function will take care of old/new
4436 * devices and schedule adding/removing them from the mid-layer
4437 * as appropriate.
4438 *
4439 * Return value:
4440 * IPR_RC_JOB_CONTINUE
4441 **/
4442static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4443{
4444 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4445 struct ipr_resource_entry *res, *temp;
4446 struct ipr_config_table_entry *cfgte;
4447 int found, i;
4448 LIST_HEAD(old_res);
4449
4450 ENTER;
4451 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4452 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4453
4454 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4455 list_move_tail(&res->queue, &old_res);
4456
4457 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4458 cfgte = &ioa_cfg->cfg_table->dev[i];
4459 found = 0;
4460
4461 list_for_each_entry_safe(res, temp, &old_res, queue) {
4462 if (!memcmp(&res->cfgte.res_addr,
4463 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4464 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4465 found = 1;
4466 break;
4467 }
4468 }
4469
4470 if (!found) {
4471 if (list_empty(&ioa_cfg->free_res_q)) {
4472 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
4473 break;
4474 }
4475
4476 found = 1;
4477 res = list_entry(ioa_cfg->free_res_q.next,
4478 struct ipr_resource_entry, queue);
4479 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4480 ipr_init_res_entry(res);
4481 res->add_to_ml = 1;
4482 }
4483
4484 if (found)
4485 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
4486 }
4487
4488 list_for_each_entry_safe(res, temp, &old_res, queue) {
4489 if (res->sdev) {
4490 res->del_from_ml = 1;
4491 res->sdev->hostdata = NULL;
4492 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4493 } else {
4494 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
4495 }
4496 }
4497
4498 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
4499
4500 LEAVE;
4501 return IPR_RC_JOB_CONTINUE;
4502}
4503
4504/**
4505 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4506 * @ipr_cmd: ipr command struct
4507 *
4508 * This function sends a Query IOA Configuration command
4509 * to the adapter to retrieve the IOA configuration table.
4510 *
4511 * Return value:
4512 * IPR_RC_JOB_RETURN
4513 **/
4514static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
4515{
4516 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4517 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4518 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4519 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
4520
4521 ENTER;
4522 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
4523 ucode_vpd->major_release, ucode_vpd->card_type,
4524 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
4525 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4526 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4527
4528 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
4529 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
4530 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
4531
4532 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4533 ioarcb->read_data_transfer_length =
4534 cpu_to_be32(sizeof(struct ipr_config_table));
4535
4536 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
4537 ioadl->flags_and_data_len =
4538 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
4539
4540 ipr_cmd->job_step = ipr_init_res_table;
4541
4542 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4543
4544 LEAVE;
4545 return IPR_RC_JOB_RETURN;
4546}
4547
4548/**
4549 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
4550 * @ipr_cmd: ipr command struct
4551 *
4552 * This utility function sends an inquiry to the adapter.
4553 *
4554 * Return value:
4555 * none
4556 **/
4557static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
4558 u32 dma_addr, u8 xfer_len)
4559{
4560 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4561 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4562
4563 ENTER;
4564 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4565 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4566
4567 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
4568 ioarcb->cmd_pkt.cdb[1] = flags;
4569 ioarcb->cmd_pkt.cdb[2] = page;
4570 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4571
4572 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4573 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4574
4575 ioadl->address = cpu_to_be32(dma_addr);
4576 ioadl->flags_and_data_len =
4577 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4578
4579 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4580 LEAVE;
4581}
4582
4583/**
4584 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
4585 * @ipr_cmd: ipr command struct
4586 *
4587 * This function sends a Page 3 inquiry to the adapter
4588 * to retrieve software VPD information.
4589 *
4590 * Return value:
4591 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4592 **/
4593static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
4594{
4595 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4596 char type[5];
4597
4598 ENTER;
4599
4600 /* Grab the type out of the VPD and store it away */
4601 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
4602 type[4] = '\0';
4603 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
4604
4605 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
4606
4607 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
4608 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
4609 sizeof(struct ipr_inquiry_page3));
4610
4611 LEAVE;
4612 return IPR_RC_JOB_RETURN;
4613}
4614
4615/**
4616 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
4617 * @ipr_cmd: ipr command struct
4618 *
4619 * This function sends a standard inquiry to the adapter.
4620 *
4621 * Return value:
4622 * IPR_RC_JOB_RETURN
4623 **/
4624static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
4625{
4626 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4627
4628 ENTER;
4629 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
4630
4631 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
4632 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
4633 sizeof(struct ipr_ioa_vpd));
4634
4635 LEAVE;
4636 return IPR_RC_JOB_RETURN;
4637}
4638
4639/**
4640 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
4641 * @ipr_cmd: ipr command struct
4642 *
4643 * This function send an Identify Host Request Response Queue
4644 * command to establish the HRRQ with the adapter.
4645 *
4646 * Return value:
4647 * IPR_RC_JOB_RETURN
4648 **/
4649static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
4650{
4651 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4652 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4653
4654 ENTER;
4655 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
4656
4657 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
4658 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4659
4660 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4661 ioarcb->cmd_pkt.cdb[2] =
4662 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
4663 ioarcb->cmd_pkt.cdb[3] =
4664 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
4665 ioarcb->cmd_pkt.cdb[4] =
4666 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
4667 ioarcb->cmd_pkt.cdb[5] =
4668 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
4669 ioarcb->cmd_pkt.cdb[7] =
4670 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
4671 ioarcb->cmd_pkt.cdb[8] =
4672 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
4673
4674 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
4675
4676 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4677
4678 LEAVE;
4679 return IPR_RC_JOB_RETURN;
4680}
4681
4682/**
4683 * ipr_reset_timer_done - Adapter reset timer function
4684 * @ipr_cmd: ipr command struct
4685 *
4686 * Description: This function is used in adapter reset processing
4687 * for timing events. If the reset_cmd pointer in the IOA
4688 * config struct is not this adapter's we are doing nested
4689 * resets and fail_all_ops will take care of freeing the
4690 * command block.
4691 *
4692 * Return value:
4693 * none
4694 **/
4695static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
4696{
4697 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4698 unsigned long lock_flags = 0;
4699
4700 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4701
4702 if (ioa_cfg->reset_cmd == ipr_cmd) {
4703 list_del(&ipr_cmd->queue);
4704 ipr_cmd->done(ipr_cmd);
4705 }
4706
4707 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4708}
4709
4710/**
4711 * ipr_reset_start_timer - Start a timer for adapter reset job
4712 * @ipr_cmd: ipr command struct
4713 * @timeout: timeout value
4714 *
4715 * Description: This function is used in adapter reset processing
4716 * for timing events. If the reset_cmd pointer in the IOA
4717 * config struct is not this adapter's we are doing nested
4718 * resets and fail_all_ops will take care of freeing the
4719 * command block.
4720 *
4721 * Return value:
4722 * none
4723 **/
4724static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
4725 unsigned long timeout)
4726{
4727 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
4728 ipr_cmd->done = ipr_reset_ioa_job;
4729
4730 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4731 ipr_cmd->timer.expires = jiffies + timeout;
4732 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
4733 add_timer(&ipr_cmd->timer);
4734}
4735
4736/**
4737 * ipr_init_ioa_mem - Initialize ioa_cfg control block
4738 * @ioa_cfg: ioa cfg struct
4739 *
4740 * Return value:
4741 * nothing
4742 **/
4743static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
4744{
4745 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
4746
4747 /* Initialize Host RRQ pointers */
4748 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
4749 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
4750 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4751 ioa_cfg->toggle_bit = 1;
4752
4753 /* Zero out config table */
4754 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
4755}
4756
4757/**
4758 * ipr_reset_enable_ioa - Enable the IOA following a reset.
4759 * @ipr_cmd: ipr command struct
4760 *
4761 * This function reinitializes some control blocks and
4762 * enables destructive diagnostics on the adapter.
4763 *
4764 * Return value:
4765 * IPR_RC_JOB_RETURN
4766 **/
4767static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
4768{
4769 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4770 volatile u32 int_reg;
4771
4772 ENTER;
4773 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
4774 ipr_init_ioa_mem(ioa_cfg);
4775
4776 ioa_cfg->allow_interrupts = 1;
4777 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4778
4779 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4780 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
4781 ioa_cfg->regs.clr_interrupt_mask_reg);
4782 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4783 return IPR_RC_JOB_CONTINUE;
4784 }
4785
4786 /* Enable destructive diagnostics on IOA */
4787 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg);
4788
4789 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
4790 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4791
4792 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
4793
4794 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4795 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
4796 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
4797 ipr_cmd->done = ipr_reset_ioa_job;
4798 add_timer(&ipr_cmd->timer);
4799 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4800
4801 LEAVE;
4802 return IPR_RC_JOB_RETURN;
4803}
4804
4805/**
4806 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
4807 * @ipr_cmd: ipr command struct
4808 *
4809 * This function is invoked when an adapter dump has run out
4810 * of processing time.
4811 *
4812 * Return value:
4813 * IPR_RC_JOB_CONTINUE
4814 **/
4815static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
4816{
4817 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4818
4819 if (ioa_cfg->sdt_state == GET_DUMP)
4820 ioa_cfg->sdt_state = ABORT_DUMP;
4821
4822 ipr_cmd->job_step = ipr_reset_alert;
4823
4824 return IPR_RC_JOB_CONTINUE;
4825}
4826
4827/**
4828 * ipr_unit_check_no_data - Log a unit check/no data error log
4829 * @ioa_cfg: ioa config struct
4830 *
4831 * Logs an error indicating the adapter unit checked, but for some
4832 * reason, we were unable to fetch the unit check buffer.
4833 *
4834 * Return value:
4835 * nothing
4836 **/
4837static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
4838{
4839 ioa_cfg->errors_logged++;
4840 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
4841}
4842
4843/**
4844 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
4845 * @ioa_cfg: ioa config struct
4846 *
4847 * Fetches the unit check buffer from the adapter by clocking the data
4848 * through the mailbox register.
4849 *
4850 * Return value:
4851 * nothing
4852 **/
4853static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
4854{
4855 unsigned long mailbox;
4856 struct ipr_hostrcb *hostrcb;
4857 struct ipr_uc_sdt sdt;
4858 int rc, length;
4859
4860 mailbox = readl(ioa_cfg->ioa_mailbox);
4861
4862 if (!ipr_sdt_is_fmt2(mailbox)) {
4863 ipr_unit_check_no_data(ioa_cfg);
4864 return;
4865 }
4866
4867 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
4868 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
4869 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
4870
4871 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
4872 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
4873 ipr_unit_check_no_data(ioa_cfg);
4874 return;
4875 }
4876
4877 /* Find length of the first sdt entry (UC buffer) */
4878 length = (be32_to_cpu(sdt.entry[0].end_offset) -
4879 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
4880
4881 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
4882 struct ipr_hostrcb, queue);
4883 list_del(&hostrcb->queue);
4884 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
4885
4886 rc = ipr_get_ldump_data_section(ioa_cfg,
4887 be32_to_cpu(sdt.entry[0].bar_str_offset),
4888 (__be32 *)&hostrcb->hcam,
4889 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
4890
4891 if (!rc)
4892 ipr_handle_log_data(ioa_cfg, hostrcb);
4893 else
4894 ipr_unit_check_no_data(ioa_cfg);
4895
4896 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4897}
4898
4899/**
4900 * ipr_reset_restore_cfg_space - Restore PCI config space.
4901 * @ipr_cmd: ipr command struct
4902 *
4903 * Description: This function restores the saved PCI config space of
4904 * the adapter, fails all outstanding ops back to the callers, and
4905 * fetches the dump/unit check if applicable to this reset.
4906 *
4907 * Return value:
4908 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4909 **/
4910static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
4911{
4912 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4913 int rc;
4914
4915 ENTER;
b30197d2 4916 pci_unblock_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 4917 rc = pci_restore_state(ioa_cfg->pdev);
4918
4919 if (rc != PCIBIOS_SUCCESSFUL) {
4920 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4921 return IPR_RC_JOB_CONTINUE;
4922 }
4923
4924 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
4925 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4926 return IPR_RC_JOB_CONTINUE;
4927 }
4928
4929 ipr_fail_all_ops(ioa_cfg);
4930
4931 if (ioa_cfg->ioa_unit_checked) {
4932 ioa_cfg->ioa_unit_checked = 0;
4933 ipr_get_unit_check_buffer(ioa_cfg);
4934 ipr_cmd->job_step = ipr_reset_alert;
4935 ipr_reset_start_timer(ipr_cmd, 0);
4936 return IPR_RC_JOB_RETURN;
4937 }
4938
4939 if (ioa_cfg->in_ioa_bringdown) {
4940 ipr_cmd->job_step = ipr_ioa_bringdown_done;
4941 } else {
4942 ipr_cmd->job_step = ipr_reset_enable_ioa;
4943
4944 if (GET_DUMP == ioa_cfg->sdt_state) {
4945 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
4946 ipr_cmd->job_step = ipr_reset_wait_for_dump;
4947 schedule_work(&ioa_cfg->work_q);
4948 return IPR_RC_JOB_RETURN;
4949 }
4950 }
4951
4952 ENTER;
4953 return IPR_RC_JOB_CONTINUE;
4954}
4955
4956/**
4957 * ipr_reset_start_bist - Run BIST on the adapter.
4958 * @ipr_cmd: ipr command struct
4959 *
4960 * Description: This function runs BIST on the adapter, then delays 2 seconds.
4961 *
4962 * Return value:
4963 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4964 **/
4965static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
4966{
4967 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4968 int rc;
4969
4970 ENTER;
b30197d2 4971 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 4972 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
4973
4974 if (rc != PCIBIOS_SUCCESSFUL) {
4975 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4976 rc = IPR_RC_JOB_CONTINUE;
4977 } else {
4978 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
4979 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
4980 rc = IPR_RC_JOB_RETURN;
4981 }
4982
4983 LEAVE;
4984 return rc;
4985}
4986
4987/**
4988 * ipr_reset_allowed - Query whether or not IOA can be reset
4989 * @ioa_cfg: ioa config struct
4990 *
4991 * Return value:
4992 * 0 if reset not allowed / non-zero if reset is allowed
4993 **/
4994static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
4995{
4996 volatile u32 temp_reg;
4997
4998 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4999 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
5000}
5001
5002/**
5003 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5004 * @ipr_cmd: ipr command struct
5005 *
5006 * Description: This function waits for adapter permission to run BIST,
5007 * then runs BIST. If the adapter does not give permission after a
5008 * reasonable time, we will reset the adapter anyway. The impact of
5009 * resetting the adapter without warning the adapter is the risk of
5010 * losing the persistent error log on the adapter. If the adapter is
5011 * reset while it is writing to the flash on the adapter, the flash
5012 * segment will have bad ECC and be zeroed.
5013 *
5014 * Return value:
5015 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5016 **/
5017static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5018{
5019 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5020 int rc = IPR_RC_JOB_RETURN;
5021
5022 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5023 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5024 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5025 } else {
5026 ipr_cmd->job_step = ipr_reset_start_bist;
5027 rc = IPR_RC_JOB_CONTINUE;
5028 }
5029
5030 return rc;
5031}
5032
5033/**
5034 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5035 * @ipr_cmd: ipr command struct
5036 *
5037 * Description: This function alerts the adapter that it will be reset.
5038 * If memory space is not currently enabled, proceed directly
5039 * to running BIST on the adapter. The timer must always be started
5040 * so we guarantee we do not run BIST from ipr_isr.
5041 *
5042 * Return value:
5043 * IPR_RC_JOB_RETURN
5044 **/
5045static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5046{
5047 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5048 u16 cmd_reg;
5049 int rc;
5050
5051 ENTER;
5052 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5053
5054 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5055 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5056 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5057 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5058 } else {
5059 ipr_cmd->job_step = ipr_reset_start_bist;
5060 }
5061
5062 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5063 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5064
5065 LEAVE;
5066 return IPR_RC_JOB_RETURN;
5067}
5068
5069/**
5070 * ipr_reset_ucode_download_done - Microcode download completion
5071 * @ipr_cmd: ipr command struct
5072 *
5073 * Description: This function unmaps the microcode download buffer.
5074 *
5075 * Return value:
5076 * IPR_RC_JOB_CONTINUE
5077 **/
5078static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5079{
5080 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5081 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5082
5083 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5084 sglist->num_sg, DMA_TO_DEVICE);
5085
5086 ipr_cmd->job_step = ipr_reset_alert;
5087 return IPR_RC_JOB_CONTINUE;
5088}
5089
5090/**
5091 * ipr_reset_ucode_download - Download microcode to the adapter
5092 * @ipr_cmd: ipr command struct
5093 *
5094 * Description: This function checks to see if it there is microcode
5095 * to download to the adapter. If there is, a download is performed.
5096 *
5097 * Return value:
5098 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5099 **/
5100static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5101{
5102 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5103 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5104
5105 ENTER;
5106 ipr_cmd->job_step = ipr_reset_alert;
5107
5108 if (!sglist)
5109 return IPR_RC_JOB_CONTINUE;
5110
5111 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5112 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5113 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5114 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5115 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5116 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5117 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5118
5119 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) {
5120 dev_err(&ioa_cfg->pdev->dev,
5121 "Failed to map microcode download buffer\n");
5122 return IPR_RC_JOB_CONTINUE;
5123 }
5124
5125 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5126
5127 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5128 IPR_WRITE_BUFFER_TIMEOUT);
5129
5130 LEAVE;
5131 return IPR_RC_JOB_RETURN;
5132}
5133
5134/**
5135 * ipr_reset_shutdown_ioa - Shutdown the adapter
5136 * @ipr_cmd: ipr command struct
5137 *
5138 * Description: This function issues an adapter shutdown of the
5139 * specified type to the specified adapter as part of the
5140 * adapter reset job.
5141 *
5142 * Return value:
5143 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5144 **/
5145static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5146{
5147 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5148 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5149 unsigned long timeout;
5150 int rc = IPR_RC_JOB_CONTINUE;
5151
5152 ENTER;
5153 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5154 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5155 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5156 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5157 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5158
5159 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5160 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5161 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5162 timeout = IPR_INTERNAL_TIMEOUT;
5163 else
5164 timeout = IPR_SHUTDOWN_TIMEOUT;
5165
5166 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5167
5168 rc = IPR_RC_JOB_RETURN;
5169 ipr_cmd->job_step = ipr_reset_ucode_download;
5170 } else
5171 ipr_cmd->job_step = ipr_reset_alert;
5172
5173 LEAVE;
5174 return rc;
5175}
5176
5177/**
5178 * ipr_reset_ioa_job - Adapter reset job
5179 * @ipr_cmd: ipr command struct
5180 *
5181 * Description: This function is the job router for the adapter reset job.
5182 *
5183 * Return value:
5184 * none
5185 **/
5186static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5187{
5188 u32 rc, ioasc;
5189 unsigned long scratch = ipr_cmd->u.scratch;
5190 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5191
5192 do {
5193 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5194
5195 if (ioa_cfg->reset_cmd != ipr_cmd) {
5196 /*
5197 * We are doing nested adapter resets and this is
5198 * not the current reset job.
5199 */
5200 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5201 return;
5202 }
5203
5204 if (IPR_IOASC_SENSE_KEY(ioasc)) {
5205 dev_err(&ioa_cfg->pdev->dev,
5206 "0x%02X failed with IOASC: 0x%08X\n",
5207 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5208
5209 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5210 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5211 return;
5212 }
5213
5214 ipr_reinit_ipr_cmnd(ipr_cmd);
5215 ipr_cmd->u.scratch = scratch;
5216 rc = ipr_cmd->job_step(ipr_cmd);
5217 } while(rc == IPR_RC_JOB_CONTINUE);
5218}
5219
5220/**
5221 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5222 * @ioa_cfg: ioa config struct
5223 * @job_step: first job step of reset job
5224 * @shutdown_type: shutdown type
5225 *
5226 * Description: This function will initiate the reset of the given adapter
5227 * starting at the selected job step.
5228 * If the caller needs to wait on the completion of the reset,
5229 * the caller must sleep on the reset_wait_q.
5230 *
5231 * Return value:
5232 * none
5233 **/
5234static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5235 int (*job_step) (struct ipr_cmnd *),
5236 enum ipr_shutdown_type shutdown_type)
5237{
5238 struct ipr_cmnd *ipr_cmd;
5239
5240 ioa_cfg->in_reset_reload = 1;
5241 ioa_cfg->allow_cmds = 0;
5242 scsi_block_requests(ioa_cfg->host);
5243
5244 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5245 ioa_cfg->reset_cmd = ipr_cmd;
5246 ipr_cmd->job_step = job_step;
5247 ipr_cmd->u.shutdown_type = shutdown_type;
5248
5249 ipr_reset_ioa_job(ipr_cmd);
5250}
5251
5252/**
5253 * ipr_initiate_ioa_reset - Initiate an adapter reset
5254 * @ioa_cfg: ioa config struct
5255 * @shutdown_type: shutdown type
5256 *
5257 * Description: This function will initiate the reset of the given adapter.
5258 * If the caller needs to wait on the completion of the reset,
5259 * the caller must sleep on the reset_wait_q.
5260 *
5261 * Return value:
5262 * none
5263 **/
5264static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5265 enum ipr_shutdown_type shutdown_type)
5266{
5267 if (ioa_cfg->ioa_is_dead)
5268 return;
5269
5270 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5271 ioa_cfg->sdt_state = ABORT_DUMP;
5272
5273 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5274 dev_err(&ioa_cfg->pdev->dev,
5275 "IOA taken offline - error recovery failed\n");
5276
5277 ioa_cfg->reset_retries = 0;
5278 ioa_cfg->ioa_is_dead = 1;
5279
5280 if (ioa_cfg->in_ioa_bringdown) {
5281 ioa_cfg->reset_cmd = NULL;
5282 ioa_cfg->in_reset_reload = 0;
5283 ipr_fail_all_ops(ioa_cfg);
5284 wake_up_all(&ioa_cfg->reset_wait_q);
5285
5286 spin_unlock_irq(ioa_cfg->host->host_lock);
5287 scsi_unblock_requests(ioa_cfg->host);
5288 spin_lock_irq(ioa_cfg->host->host_lock);
5289 return;
5290 } else {
5291 ioa_cfg->in_ioa_bringdown = 1;
5292 shutdown_type = IPR_SHUTDOWN_NONE;
5293 }
5294 }
5295
5296 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5297 shutdown_type);
5298}
5299
5300/**
5301 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5302 * @ioa_cfg: ioa cfg struct
5303 *
5304 * Description: This is the second phase of adapter intialization
5305 * This function takes care of initilizing the adapter to the point
5306 * where it can accept new commands.
5307
5308 * Return value:
5309 * 0 on sucess / -EIO on failure
5310 **/
5311static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5312{
5313 int rc = 0;
5314 unsigned long host_lock_flags = 0;
5315
5316 ENTER;
5317 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5318 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
5319 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE);
5320
5321 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5322 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5323 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5324
5325 if (ioa_cfg->ioa_is_dead) {
5326 rc = -EIO;
5327 } else if (ipr_invalid_adapter(ioa_cfg)) {
5328 if (!ipr_testmode)
5329 rc = -EIO;
5330
5331 dev_err(&ioa_cfg->pdev->dev,
5332 "Adapter not supported in this hardware configuration.\n");
5333 }
5334
5335 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5336
5337 LEAVE;
5338 return rc;
5339}
5340
5341/**
5342 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5343 * @ioa_cfg: ioa config struct
5344 *
5345 * Return value:
5346 * none
5347 **/
5348static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5349{
5350 int i;
5351
5352 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5353 if (ioa_cfg->ipr_cmnd_list[i])
5354 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5355 ioa_cfg->ipr_cmnd_list[i],
5356 ioa_cfg->ipr_cmnd_list_dma[i]);
5357
5358 ioa_cfg->ipr_cmnd_list[i] = NULL;
5359 }
5360
5361 if (ioa_cfg->ipr_cmd_pool)
5362 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
5363
5364 ioa_cfg->ipr_cmd_pool = NULL;
5365}
5366
5367/**
5368 * ipr_free_mem - Frees memory allocated for an adapter
5369 * @ioa_cfg: ioa cfg struct
5370 *
5371 * Return value:
5372 * nothing
5373 **/
5374static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
5375{
5376 int i;
5377
5378 kfree(ioa_cfg->res_entries);
5379 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
5380 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5381 ipr_free_cmd_blks(ioa_cfg);
5382 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5383 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5384 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
5385 ioa_cfg->cfg_table,
5386 ioa_cfg->cfg_table_dma);
5387
5388 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5389 pci_free_consistent(ioa_cfg->pdev,
5390 sizeof(struct ipr_hostrcb),
5391 ioa_cfg->hostrcb[i],
5392 ioa_cfg->hostrcb_dma[i]);
5393 }
5394
5395 ipr_free_dump(ioa_cfg);
5396 kfree(ioa_cfg->saved_mode_pages);
5397 kfree(ioa_cfg->trace);
5398}
5399
5400/**
5401 * ipr_free_all_resources - Free all allocated resources for an adapter.
5402 * @ipr_cmd: ipr command struct
5403 *
5404 * This function frees all allocated resources for the
5405 * specified adapter.
5406 *
5407 * Return value:
5408 * none
5409 **/
5410static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
5411{
5412 struct pci_dev *pdev = ioa_cfg->pdev;
5413
5414 ENTER;
5415 free_irq(pdev->irq, ioa_cfg);
5416 iounmap(ioa_cfg->hdw_dma_regs);
5417 pci_release_regions(pdev);
5418 ipr_free_mem(ioa_cfg);
5419 scsi_host_put(ioa_cfg->host);
5420 pci_disable_device(pdev);
5421 LEAVE;
5422}
5423
5424/**
5425 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5426 * @ioa_cfg: ioa config struct
5427 *
5428 * Return value:
5429 * 0 on success / -ENOMEM on allocation failure
5430 **/
5431static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5432{
5433 struct ipr_cmnd *ipr_cmd;
5434 struct ipr_ioarcb *ioarcb;
5435 dma_addr_t dma_addr;
5436 int i;
5437
5438 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
5439 sizeof(struct ipr_cmnd), 8, 0);
5440
5441 if (!ioa_cfg->ipr_cmd_pool)
5442 return -ENOMEM;
5443
5444 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5445 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
5446
5447 if (!ipr_cmd) {
5448 ipr_free_cmd_blks(ioa_cfg);
5449 return -ENOMEM;
5450 }
5451
5452 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
5453 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
5454 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
5455
5456 ioarcb = &ipr_cmd->ioarcb;
5457 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
5458 ioarcb->host_response_handle = cpu_to_be32(i << 2);
5459 ioarcb->write_ioadl_addr =
5460 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
5461 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5462 ioarcb->ioasa_host_pci_addr =
5463 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
5464 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
5465 ipr_cmd->cmd_index = i;
5466 ipr_cmd->ioa_cfg = ioa_cfg;
5467 ipr_cmd->sense_buffer_dma = dma_addr +
5468 offsetof(struct ipr_cmnd, sense_buffer);
5469
5470 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5471 }
5472
5473 return 0;
5474}
5475
5476/**
5477 * ipr_alloc_mem - Allocate memory for an adapter
5478 * @ioa_cfg: ioa config struct
5479 *
5480 * Return value:
5481 * 0 on success / non-zero for error
5482 **/
5483static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
5484{
5485 struct pci_dev *pdev = ioa_cfg->pdev;
5486 int i, rc = -ENOMEM;
5487
5488 ENTER;
5489 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) *
5490 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
5491
5492 if (!ioa_cfg->res_entries)
5493 goto out;
5494
5495 memset(ioa_cfg->res_entries, 0,
5496 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS);
5497
5498 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
5499 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
5500
5501 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
5502 sizeof(struct ipr_misc_cbs),
5503 &ioa_cfg->vpd_cbs_dma);
5504
5505 if (!ioa_cfg->vpd_cbs)
5506 goto out_free_res_entries;
5507
5508 if (ipr_alloc_cmd_blks(ioa_cfg))
5509 goto out_free_vpd_cbs;
5510
5511 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
5512 sizeof(u32) * IPR_NUM_CMD_BLKS,
5513 &ioa_cfg->host_rrq_dma);
5514
5515 if (!ioa_cfg->host_rrq)
5516 goto out_ipr_free_cmd_blocks;
5517
5518 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
5519 sizeof(struct ipr_config_table),
5520 &ioa_cfg->cfg_table_dma);
5521
5522 if (!ioa_cfg->cfg_table)
5523 goto out_free_host_rrq;
5524
5525 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5526 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
5527 sizeof(struct ipr_hostrcb),
5528 &ioa_cfg->hostrcb_dma[i]);
5529
5530 if (!ioa_cfg->hostrcb[i])
5531 goto out_free_hostrcb_dma;
5532
5533 ioa_cfg->hostrcb[i]->hostrcb_dma =
5534 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
5535 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
5536 }
5537
5538 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) *
5539 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
5540
5541 if (!ioa_cfg->trace)
5542 goto out_free_hostrcb_dma;
5543
5544 memset(ioa_cfg->trace, 0,
5545 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES);
5546
5547 rc = 0;
5548out:
5549 LEAVE;
5550 return rc;
5551
5552out_free_hostrcb_dma:
5553 while (i-- > 0) {
5554 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
5555 ioa_cfg->hostrcb[i],
5556 ioa_cfg->hostrcb_dma[i]);
5557 }
5558 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
5559 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
5560out_free_host_rrq:
5561 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5562 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5563out_ipr_free_cmd_blocks:
5564 ipr_free_cmd_blks(ioa_cfg);
5565out_free_vpd_cbs:
5566 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
5567 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5568out_free_res_entries:
5569 kfree(ioa_cfg->res_entries);
5570 goto out;
5571}
5572
5573/**
5574 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
5575 * @ioa_cfg: ioa config struct
5576 *
5577 * Return value:
5578 * none
5579 **/
5580static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
5581{
5582 int i;
5583
5584 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5585 ioa_cfg->bus_attr[i].bus = i;
5586 ioa_cfg->bus_attr[i].qas_enabled = 0;
5587 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
5588 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
5589 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
5590 else
5591 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
5592 }
5593}
5594
5595/**
5596 * ipr_init_ioa_cfg - Initialize IOA config struct
5597 * @ioa_cfg: ioa config struct
5598 * @host: scsi host struct
5599 * @pdev: PCI dev struct
5600 *
5601 * Return value:
5602 * none
5603 **/
5604static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
5605 struct Scsi_Host *host, struct pci_dev *pdev)
5606{
5607 const struct ipr_interrupt_offsets *p;
5608 struct ipr_interrupts *t;
5609 void __iomem *base;
5610
5611 ioa_cfg->host = host;
5612 ioa_cfg->pdev = pdev;
5613 ioa_cfg->log_level = ipr_log_level;
5614 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
5615 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
5616 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
5617 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
5618 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
5619 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
5620 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
5621 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
5622
5623 INIT_LIST_HEAD(&ioa_cfg->free_q);
5624 INIT_LIST_HEAD(&ioa_cfg->pending_q);
5625 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
5626 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
5627 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
5628 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
5629 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
5630 init_waitqueue_head(&ioa_cfg->reset_wait_q);
5631 ioa_cfg->sdt_state = INACTIVE;
5632
5633 ipr_initialize_bus_attr(ioa_cfg);
5634
5635 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
5636 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
5637 host->max_channel = IPR_MAX_BUS_TO_SCAN;
5638 host->unique_id = host->host_no;
5639 host->max_cmd_len = IPR_MAX_CDB_LEN;
5640 pci_set_drvdata(pdev, ioa_cfg);
5641
5642 p = &ioa_cfg->chip_cfg->regs;
5643 t = &ioa_cfg->regs;
5644 base = ioa_cfg->hdw_dma_regs;
5645
5646 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
5647 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
5648 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
5649 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
5650 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
5651 t->ioarrin_reg = base + p->ioarrin_reg;
5652 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
5653 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
5654 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
5655}
5656
5657/**
5658 * ipr_get_chip_cfg - Find adapter chip configuration
5659 * @dev_id: PCI device id struct
5660 *
5661 * Return value:
5662 * ptr to chip config on success / NULL on failure
5663 **/
5664static const struct ipr_chip_cfg_t * __devinit
5665ipr_get_chip_cfg(const struct pci_device_id *dev_id)
5666{
5667 int i;
5668
5669 if (dev_id->driver_data)
5670 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
5671
5672 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
5673 if (ipr_chip[i].vendor == dev_id->vendor &&
5674 ipr_chip[i].device == dev_id->device)
5675 return ipr_chip[i].cfg;
5676 return NULL;
5677}
5678
5679/**
5680 * ipr_probe_ioa - Allocates memory and does first stage of initialization
5681 * @pdev: PCI device struct
5682 * @dev_id: PCI device id struct
5683 *
5684 * Return value:
5685 * 0 on success / non-zero on failure
5686 **/
5687static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
5688 const struct pci_device_id *dev_id)
5689{
5690 struct ipr_ioa_cfg *ioa_cfg;
5691 struct Scsi_Host *host;
5692 unsigned long ipr_regs_pci;
5693 void __iomem *ipr_regs;
5694 u32 rc = PCIBIOS_SUCCESSFUL;
5695
5696 ENTER;
5697
5698 if ((rc = pci_enable_device(pdev))) {
5699 dev_err(&pdev->dev, "Cannot enable adapter\n");
5700 goto out;
5701 }
5702
5703 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
5704
5705 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
5706
5707 if (!host) {
5708 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
5709 rc = -ENOMEM;
5710 goto out_disable;
5711 }
5712
5713 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
5714 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
5715
5716 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
5717
5718 if (!ioa_cfg->chip_cfg) {
5719 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
5720 dev_id->vendor, dev_id->device);
5721 goto out_scsi_host_put;
5722 }
5723
5724 ipr_regs_pci = pci_resource_start(pdev, 0);
5725
5726 rc = pci_request_regions(pdev, IPR_NAME);
5727 if (rc < 0) {
5728 dev_err(&pdev->dev,
5729 "Couldn't register memory range of registers\n");
5730 goto out_scsi_host_put;
5731 }
5732
5733 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
5734
5735 if (!ipr_regs) {
5736 dev_err(&pdev->dev,
5737 "Couldn't map memory range of registers\n");
5738 rc = -ENOMEM;
5739 goto out_release_regions;
5740 }
5741
5742 ioa_cfg->hdw_dma_regs = ipr_regs;
5743 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
5744 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
5745
5746 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
5747
5748 pci_set_master(pdev);
5749
5750 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5751 if (rc < 0) {
5752 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
5753 goto cleanup_nomem;
5754 }
5755
5756 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
5757 ioa_cfg->chip_cfg->cache_line_size);
5758
5759 if (rc != PCIBIOS_SUCCESSFUL) {
5760 dev_err(&pdev->dev, "Write of cache line size failed\n");
5761 rc = -EIO;
5762 goto cleanup_nomem;
5763 }
5764
5765 /* Save away PCI config space for use following IOA reset */
5766 rc = pci_save_state(pdev);
5767
5768 if (rc != PCIBIOS_SUCCESSFUL) {
5769 dev_err(&pdev->dev, "Failed to save PCI config space\n");
5770 rc = -EIO;
5771 goto cleanup_nomem;
5772 }
5773
5774 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
5775 goto cleanup_nomem;
5776
5777 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
5778 goto cleanup_nomem;
5779
5780 rc = ipr_alloc_mem(ioa_cfg);
5781 if (rc < 0) {
5782 dev_err(&pdev->dev,
5783 "Couldn't allocate enough memory for device driver!\n");
5784 goto cleanup_nomem;
5785 }
5786
5787 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
5788 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
5789
5790 if (rc) {
5791 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
5792 pdev->irq, rc);
5793 goto cleanup_nolog;
5794 }
5795
5796 spin_lock(&ipr_driver_lock);
5797 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
5798 spin_unlock(&ipr_driver_lock);
5799
5800 LEAVE;
5801out:
5802 return rc;
5803
5804cleanup_nolog:
5805 ipr_free_mem(ioa_cfg);
5806cleanup_nomem:
5807 iounmap(ipr_regs);
5808out_release_regions:
5809 pci_release_regions(pdev);
5810out_scsi_host_put:
5811 scsi_host_put(host);
5812out_disable:
5813 pci_disable_device(pdev);
5814 goto out;
5815}
5816
5817/**
5818 * ipr_scan_vsets - Scans for VSET devices
5819 * @ioa_cfg: ioa config struct
5820 *
5821 * Description: Since the VSET resources do not follow SAM in that we can have
5822 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
5823 *
5824 * Return value:
5825 * none
5826 **/
5827static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
5828{
5829 int target, lun;
5830
5831 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
5832 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
5833 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
5834}
5835
5836/**
5837 * ipr_initiate_ioa_bringdown - Bring down an adapter
5838 * @ioa_cfg: ioa config struct
5839 * @shutdown_type: shutdown type
5840 *
5841 * Description: This function will initiate bringing down the adapter.
5842 * This consists of issuing an IOA shutdown to the adapter
5843 * to flush the cache, and running BIST.
5844 * If the caller needs to wait on the completion of the reset,
5845 * the caller must sleep on the reset_wait_q.
5846 *
5847 * Return value:
5848 * none
5849 **/
5850static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
5851 enum ipr_shutdown_type shutdown_type)
5852{
5853 ENTER;
5854 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
5855 ioa_cfg->sdt_state = ABORT_DUMP;
5856 ioa_cfg->reset_retries = 0;
5857 ioa_cfg->in_ioa_bringdown = 1;
5858 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
5859 LEAVE;
5860}
5861
5862/**
5863 * __ipr_remove - Remove a single adapter
5864 * @pdev: pci device struct
5865 *
5866 * Adapter hot plug remove entry point.
5867 *
5868 * Return value:
5869 * none
5870 **/
5871static void __ipr_remove(struct pci_dev *pdev)
5872{
5873 unsigned long host_lock_flags = 0;
5874 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5875 ENTER;
5876
5877 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5878 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
5879
5880 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5881 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 5882 flush_scheduled_work();
1da177e4
LT		 5883 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5884
5885 spin_lock(&ipr_driver_lock);
5886 list_del(&ioa_cfg->queue);
5887 spin_unlock(&ipr_driver_lock);
5888
5889 if (ioa_cfg->sdt_state == ABORT_DUMP)
5890 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
5891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5892
5893 ipr_free_all_resources(ioa_cfg);
5894
5895 LEAVE;
5896}
5897
5898/**
5899 * ipr_remove - IOA hot plug remove entry point
5900 * @pdev: pci device struct
5901 *
5902 * Adapter hot plug remove entry point.
5903 *
5904 * Return value:
5905 * none
5906 **/
5907static void ipr_remove(struct pci_dev *pdev)
5908{
5909 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5910
5911 ENTER;
5912
1da177e4
LT		 5913 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5914 &ipr_trace_attr);
5915 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5916 &ipr_dump_attr);
5917 scsi_remove_host(ioa_cfg->host);
5918
5919 __ipr_remove(pdev);
5920
5921 LEAVE;
5922}
5923
5924/**
5925 * ipr_probe - Adapter hot plug add entry point
5926 *
5927 * Return value:
5928 * 0 on success / non-zero on failure
5929 **/
5930static int __devinit ipr_probe(struct pci_dev *pdev,
5931 const struct pci_device_id *dev_id)
5932{
5933 struct ipr_ioa_cfg *ioa_cfg;
5934 int rc;
5935
5936 rc = ipr_probe_ioa(pdev, dev_id);
5937
5938 if (rc)
5939 return rc;
5940
5941 ioa_cfg = pci_get_drvdata(pdev);
5942 rc = ipr_probe_ioa_part2(ioa_cfg);
5943
5944 if (rc) {
5945 __ipr_remove(pdev);
5946 return rc;
5947 }
5948
5949 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
5950
5951 if (rc) {
5952 __ipr_remove(pdev);
5953 return rc;
5954 }
5955
5956 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5957 &ipr_trace_attr);
5958
5959 if (rc) {
5960 scsi_remove_host(ioa_cfg->host);
5961 __ipr_remove(pdev);
5962 return rc;
5963 }
5964
5965 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5966 &ipr_dump_attr);
5967
5968 if (rc) {
5969 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5970 &ipr_trace_attr);
5971 scsi_remove_host(ioa_cfg->host);
5972 __ipr_remove(pdev);
5973 return rc;
5974 }
5975
5976 scsi_scan_host(ioa_cfg->host);
5977 ipr_scan_vsets(ioa_cfg);
5978 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
5979 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 5980 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 5981 schedule_work(&ioa_cfg->work_q);
5982 return 0;
5983}
5984
5985/**
5986 * ipr_shutdown - Shutdown handler.
d18c3db5 5987 * @pdev: pci device struct
1da177e4
LT		 5988 *
5989 * This function is invoked upon system shutdown/reboot. It will issue
5990 * an adapter shutdown to the adapter to flush the write cache.
5991 *
5992 * Return value:
5993 * none
5994 **/
d18c3db5 5995static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 5996{
d18c3db5 5997 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 5998 unsigned long lock_flags = 0;
5999
6000 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6001 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6002 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6003 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6004}
6005
6006static struct pci_device_id ipr_pci_table[] __devinitdata = {
6007 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6008 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6009 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6010 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6011 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6012 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6013 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6014 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6015 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6016 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6017 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6018 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6019 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6020 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6021 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6022 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6023 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6024 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6025 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6026 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6027 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6028 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6029 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6030 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6031 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6032 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6033 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6034 { }
6035};
6036MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6037
6038static struct pci_driver ipr_driver = {
6039 .name = IPR_NAME,
6040 .id_table = ipr_pci_table,
6041 .probe = ipr_probe,
6042 .remove = ipr_remove,
d18c3db5 6043 .shutdown = ipr_shutdown,
1da177e4
LT		 6044};
6045
6046/**
6047 * ipr_init - Module entry point
6048 *
6049 * Return value:
6050 * 0 on success / negative value on failure
6051 **/
6052static int __init ipr_init(void)
6053{
6054 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6055 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6056
6057 return pci_module_init(&ipr_driver);
6058}
6059
6060/**
6061 * ipr_exit - Module unload
6062 *
6063 * Module unload entry point.
6064 *
6065 * Return value:
6066 * none
6067 **/
6068static void __exit ipr_exit(void)
6069{
6070 pci_unregister_driver(&ipr_driver);
6071}
6072
6073module_init(ipr_init);
6074module_exit(ipr_exit);
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