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[SCSI] ipr: Prevent upper layer driver binding
[mirror_ubuntu-eoan-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:
2818 * 0 on success
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;
2825
2826 sdev->hostdata = NULL;
2827
2828 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2829
2830 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2831 if ((res->cfgte.res_addr.bus == sdev->channel) &&
2832 (res->cfgte.res_addr.target == sdev->id) &&
2833 (res->cfgte.res_addr.lun == sdev->lun)) {
2834 res->sdev = sdev;
2835 res->add_to_ml = 0;
2836 res->in_erp = 0;
2837 sdev->hostdata = res;
2838 res->needs_sync_complete = 1;
2839 break;
2840 }
2841 }
2842
2843 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2844
2845 return 0;
2846}
2847
2848/**
2849 * ipr_eh_host_reset - Reset the host adapter
2850 * @scsi_cmd: scsi command struct
2851 *
2852 * Return value:
2853 * SUCCESS / FAILED
2854 **/
df0ae249 2855static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 2856{
2857 struct ipr_ioa_cfg *ioa_cfg;
2858 int rc;
2859
2860 ENTER;
2861 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2862
2863 dev_err(&ioa_cfg->pdev->dev,
2864 "Adapter being reset as a result of error recovery.\n");
2865
2866 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2867 ioa_cfg->sdt_state = GET_DUMP;
2868
2869 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2870
2871 LEAVE;
2872 return rc;
2873}
2874
df0ae249
JG		 2875static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
2876{
2877 int rc;
2878
2879 spin_lock_irq(cmd->device->host->host_lock);
2880 rc = __ipr_eh_host_reset(cmd);
2881 spin_unlock_irq(cmd->device->host->host_lock);
2882
2883 return rc;
2884}
2885
1da177e4
LT		 2886/**
2887 * ipr_eh_dev_reset - Reset the device
2888 * @scsi_cmd: scsi command struct
2889 *
2890 * This function issues a device reset to the affected device.
2891 * A LUN reset will be sent to the device first. If that does
2892 * not work, a target reset will be sent.
2893 *
2894 * Return value:
2895 * SUCCESS / FAILED
2896 **/
94d0e7b8 2897static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
1da177e4
LT		 2898{
2899 struct ipr_cmnd *ipr_cmd;
2900 struct ipr_ioa_cfg *ioa_cfg;
2901 struct ipr_resource_entry *res;
2902 struct ipr_cmd_pkt *cmd_pkt;
2903 u32 ioasc;
2904
2905 ENTER;
2906 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2907 res = scsi_cmd->device->hostdata;
2908
2909 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
2910 return FAILED;
2911
2912 /*
2913 * If we are currently going through reset/reload, return failed. This will force the
2914 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
2915 * reset to complete
2916 */
2917 if (ioa_cfg->in_reset_reload)
2918 return FAILED;
2919 if (ioa_cfg->ioa_is_dead)
2920 return FAILED;
2921
2922 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
2923 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
2924 if (ipr_cmd->scsi_cmd)
2925 ipr_cmd->done = ipr_scsi_eh_done;
2926 }
2927 }
2928
2929 res->resetting_device = 1;
2930
2931 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
2932
2933 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
2934 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
2935 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
2936 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
2937
2938 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
2939 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
2940
2941 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
2942
2943 res->resetting_device = 0;
2944
2945 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2946
2947 LEAVE;
2948 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
2949}
2950
94d0e7b8
JG		 2951static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
2952{
2953 int rc;
2954
2955 spin_lock_irq(cmd->device->host->host_lock);
2956 rc = __ipr_eh_dev_reset(cmd);
2957 spin_unlock_irq(cmd->device->host->host_lock);
2958
2959 return rc;
2960}
2961
1da177e4
LT		 2962/**
2963 * ipr_bus_reset_done - Op done function for bus reset.
2964 * @ipr_cmd: ipr command struct
2965 *
2966 * This function is the op done function for a bus reset
2967 *
2968 * Return value:
2969 * none
2970 **/
2971static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
2972{
2973 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2974 struct ipr_resource_entry *res;
2975
2976 ENTER;
2977 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2978 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
2979 sizeof(res->cfgte.res_handle))) {
2980 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
2981 break;
2982 }
2983 }
2984
2985 /*
2986 * If abort has not completed, indicate the reset has, else call the
2987 * abort's done function to wake the sleeping eh thread
2988 */
2989 if (ipr_cmd->sibling->sibling)
2990 ipr_cmd->sibling->sibling = NULL;
2991 else
2992 ipr_cmd->sibling->done(ipr_cmd->sibling);
2993
2994 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2995 LEAVE;
2996}
2997
2998/**
2999 * ipr_abort_timeout - An abort task has timed out
3000 * @ipr_cmd: ipr command struct
3001 *
3002 * This function handles when an abort task times out. If this
3003 * happens we issue a bus reset since we have resources tied
3004 * up that must be freed before returning to the midlayer.
3005 *
3006 * Return value:
3007 * none
3008 **/
3009static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3010{
3011 struct ipr_cmnd *reset_cmd;
3012 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3013 struct ipr_cmd_pkt *cmd_pkt;
3014 unsigned long lock_flags = 0;
3015
3016 ENTER;
3017 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3018 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3019 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3020 return;
3021 }
3022
3023 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3024 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3025 ipr_cmd->sibling = reset_cmd;
3026 reset_cmd->sibling = ipr_cmd;
3027 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3028 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3029 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3030 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3031 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3032
3033 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3034 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3035 LEAVE;
3036}
3037
3038/**
3039 * ipr_cancel_op - Cancel specified op
3040 * @scsi_cmd: scsi command struct
3041 *
3042 * This function cancels specified op.
3043 *
3044 * Return value:
3045 * SUCCESS / FAILED
3046 **/
3047static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3048{
3049 struct ipr_cmnd *ipr_cmd;
3050 struct ipr_ioa_cfg *ioa_cfg;
3051 struct ipr_resource_entry *res;
3052 struct ipr_cmd_pkt *cmd_pkt;
3053 u32 ioasc;
3054 int op_found = 0;
3055
3056 ENTER;
3057 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3058 res = scsi_cmd->device->hostdata;
3059
8fa728a2
JG		 3060 /* If we are currently going through reset/reload, return failed.
3061 * This will force the mid-layer to call ipr_eh_host_reset,
3062 * which will then go to sleep and wait for the reset to complete
3063 */
3064 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3065 return FAILED;
1da177e4
LT		 3066 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3067 return FAILED;
3068
3069 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3070 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3071 ipr_cmd->done = ipr_scsi_eh_done;
3072 op_found = 1;
3073 break;
3074 }
3075 }
3076
3077 if (!op_found)
3078 return SUCCESS;
3079
3080 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3081 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3082 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3083 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3084 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3085 ipr_cmd->u.sdev = scsi_cmd->device;
3086
3087 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3088 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3089 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3090
3091 /*
3092 * If the abort task timed out and we sent a bus reset, we will get
3093 * one the following responses to the abort
3094 */
3095 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3096 ioasc = 0;
3097 ipr_trace;
3098 }
3099
3100 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3101 res->needs_sync_complete = 1;
3102
3103 LEAVE;
3104 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3105}
3106
3107/**
3108 * ipr_eh_abort - Abort a single op
3109 * @scsi_cmd: scsi command struct
3110 *
3111 * Return value:
3112 * SUCCESS / FAILED
3113 **/
3114static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3115{
8fa728a2
JG		 3116 unsigned long flags;
3117 int rc;
1da177e4
LT		 3118
3119 ENTER;
1da177e4 3120
8fa728a2
JG		 3121 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3122 rc = ipr_cancel_op(scsi_cmd);
3123 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
1da177e4
LT		 3124
3125 LEAVE;
8fa728a2 3126 return rc;
1da177e4
LT		 3127}
3128
3129/**
3130 * ipr_handle_other_interrupt - Handle "other" interrupts
3131 * @ioa_cfg: ioa config struct
3132 * @int_reg: interrupt register
3133 *
3134 * Return value:
3135 * IRQ_NONE / IRQ_HANDLED
3136 **/
3137static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3138 volatile u32 int_reg)
3139{
3140 irqreturn_t rc = IRQ_HANDLED;
3141
3142 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3143 /* Mask the interrupt */
3144 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3145
3146 /* Clear the interrupt */
3147 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3148 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3149
3150 list_del(&ioa_cfg->reset_cmd->queue);
3151 del_timer(&ioa_cfg->reset_cmd->timer);
3152 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3153 } else {
3154 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3155 ioa_cfg->ioa_unit_checked = 1;
3156 else
3157 dev_err(&ioa_cfg->pdev->dev,
3158 "Permanent IOA failure. 0x%08X\n", int_reg);
3159
3160 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3161 ioa_cfg->sdt_state = GET_DUMP;
3162
3163 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3164 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3165 }
3166
3167 return rc;
3168}
3169
3170/**
3171 * ipr_isr - Interrupt service routine
3172 * @irq: irq number
3173 * @devp: pointer to ioa config struct
3174 * @regs: pt_regs struct
3175 *
3176 * Return value:
3177 * IRQ_NONE / IRQ_HANDLED
3178 **/
3179static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3180{
3181 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3182 unsigned long lock_flags = 0;
3183 volatile u32 int_reg, int_mask_reg;
3184 u32 ioasc;
3185 u16 cmd_index;
3186 struct ipr_cmnd *ipr_cmd;
3187 irqreturn_t rc = IRQ_NONE;
3188
3189 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3190
3191 /* If interrupts are disabled, ignore the interrupt */
3192 if (!ioa_cfg->allow_interrupts) {
3193 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3194 return IRQ_NONE;
3195 }
3196
3197 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3198 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3199
3200 /* If an interrupt on the adapter did not occur, ignore it */
3201 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3202 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3203 return IRQ_NONE;
3204 }
3205
3206 while (1) {
3207 ipr_cmd = NULL;
3208
3209 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3210 ioa_cfg->toggle_bit) {
3211
3212 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3213 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3214
3215 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3216 ioa_cfg->errors_logged++;
3217 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3218
3219 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3220 ioa_cfg->sdt_state = GET_DUMP;
3221
3222 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3223 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3224 return IRQ_HANDLED;
3225 }
3226
3227 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3228
3229 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3230
3231 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3232
3233 list_del(&ipr_cmd->queue);
3234 del_timer(&ipr_cmd->timer);
3235 ipr_cmd->done(ipr_cmd);
3236
3237 rc = IRQ_HANDLED;
3238
3239 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3240 ioa_cfg->hrrq_curr++;
3241 } else {
3242 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3243 ioa_cfg->toggle_bit ^= 1u;
3244 }
3245 }
3246
3247 if (ipr_cmd != NULL) {
3248 /* Clear the PCI interrupt */
3249 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3250 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3251 } else
3252 break;
3253 }
3254
3255 if (unlikely(rc == IRQ_NONE))
3256 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3257
3258 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3259 return rc;
3260}
3261
3262/**
3263 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3264 * @ioa_cfg: ioa config struct
3265 * @ipr_cmd: ipr command struct
3266 *
3267 * Return value:
3268 * 0 on success / -1 on failure
3269 **/
3270static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3271 struct ipr_cmnd *ipr_cmd)
3272{
3273 int i;
3274 struct scatterlist *sglist;
3275 u32 length;
3276 u32 ioadl_flags = 0;
3277 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3278 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3279 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3280
3281 length = scsi_cmd->request_bufflen;
3282
3283 if (length == 0)
3284 return 0;
3285
3286 if (scsi_cmd->use_sg) {
3287 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3288 scsi_cmd->request_buffer,
3289 scsi_cmd->use_sg,
3290 scsi_cmd->sc_data_direction);
3291
3292 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3293 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3294 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3295 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3296 ioarcb->write_ioadl_len =
3297 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3298 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3299 ioadl_flags = IPR_IOADL_FLAGS_READ;
3300 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3301 ioarcb->read_ioadl_len =
3302 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3303 }
3304
3305 sglist = scsi_cmd->request_buffer;
3306
3307 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3308 ioadl[i].flags_and_data_len =
3309 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3310 ioadl[i].address =
3311 cpu_to_be32(sg_dma_address(&sglist[i]));
3312 }
3313
3314 if (likely(ipr_cmd->dma_use_sg)) {
3315 ioadl[i-1].flags_and_data_len |=
3316 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3317 return 0;
3318 } else
3319 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3320 } else {
3321 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3322 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3323 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3324 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3325 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3326 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3327 ioadl_flags = IPR_IOADL_FLAGS_READ;
3328 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3329 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3330 }
3331
3332 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3333 scsi_cmd->request_buffer, length,
3334 scsi_cmd->sc_data_direction);
3335
3336 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3337 ipr_cmd->dma_use_sg = 1;
3338 ioadl[0].flags_and_data_len =
3339 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3340 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3341 return 0;
3342 } else
3343 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3344 }
3345
3346 return -1;
3347}
3348
3349/**
3350 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3351 * @scsi_cmd: scsi command struct
3352 *
3353 * Return value:
3354 * task attributes
3355 **/
3356static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3357{
3358 u8 tag[2];
3359 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3360
3361 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3362 switch (tag[0]) {
3363 case MSG_SIMPLE_TAG:
3364 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3365 break;
3366 case MSG_HEAD_TAG:
3367 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3368 break;
3369 case MSG_ORDERED_TAG:
3370 rc = IPR_FLAGS_LO_ORDERED_TASK;
3371 break;
3372 };
3373 }
3374
3375 return rc;
3376}
3377
3378/**
3379 * ipr_erp_done - Process completion of ERP for a device
3380 * @ipr_cmd: ipr command struct
3381 *
3382 * This function copies the sense buffer into the scsi_cmd
3383 * struct and pushes the scsi_done function.
3384 *
3385 * Return value:
3386 * nothing
3387 **/
3388static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3389{
3390 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3391 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3392 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3393 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3394
3395 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3396 scsi_cmd->result |= (DID_ERROR << 16);
3397 ipr_sdev_err(scsi_cmd->device,
3398 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3399 } else {
3400 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3401 SCSI_SENSE_BUFFERSIZE);
3402 }
3403
3404 if (res) {
3405 res->needs_sync_complete = 1;
3406 res->in_erp = 0;
3407 }
3408 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3409 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3410 scsi_cmd->scsi_done(scsi_cmd);
3411}
3412
3413/**
3414 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3415 * @ipr_cmd: ipr command struct
3416 *
3417 * Return value:
3418 * none
3419 **/
3420static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3421{
3422 struct ipr_ioarcb *ioarcb;
3423 struct ipr_ioasa *ioasa;
3424
3425 ioarcb = &ipr_cmd->ioarcb;
3426 ioasa = &ipr_cmd->ioasa;
3427
3428 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3429 ioarcb->write_data_transfer_length = 0;
3430 ioarcb->read_data_transfer_length = 0;
3431 ioarcb->write_ioadl_len = 0;
3432 ioarcb->read_ioadl_len = 0;
3433 ioasa->ioasc = 0;
3434 ioasa->residual_data_len = 0;
3435}
3436
3437/**
3438 * ipr_erp_request_sense - Send request sense to a device
3439 * @ipr_cmd: ipr command struct
3440 *
3441 * This function sends a request sense to a device as a result
3442 * of a check condition.
3443 *
3444 * Return value:
3445 * nothing
3446 **/
3447static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3448{
3449 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3450 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3451
3452 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3453 ipr_erp_done(ipr_cmd);
3454 return;
3455 }
3456
3457 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3458
3459 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3460 cmd_pkt->cdb[0] = REQUEST_SENSE;
3461 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3462 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3463 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3464 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3465
3466 ipr_cmd->ioadl[0].flags_and_data_len =
3467 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3468 ipr_cmd->ioadl[0].address =
3469 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3470
3471 ipr_cmd->ioarcb.read_ioadl_len =
3472 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3473 ipr_cmd->ioarcb.read_data_transfer_length =
3474 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3475
3476 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3477 IPR_REQUEST_SENSE_TIMEOUT * 2);
3478}
3479
3480/**
3481 * ipr_erp_cancel_all - Send cancel all to a device
3482 * @ipr_cmd: ipr command struct
3483 *
3484 * This function sends a cancel all to a device to clear the
3485 * queue. If we are running TCQ on the device, QERR is set to 1,
3486 * which means all outstanding ops have been dropped on the floor.
3487 * Cancel all will return them to us.
3488 *
3489 * Return value:
3490 * nothing
3491 **/
3492static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3493{
3494 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3495 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3496 struct ipr_cmd_pkt *cmd_pkt;
3497
3498 res->in_erp = 1;
3499
3500 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3501
3502 if (!scsi_get_tag_type(scsi_cmd->device)) {
3503 ipr_erp_request_sense(ipr_cmd);
3504 return;
3505 }
3506
3507 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3508 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3509 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3510
3511 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3512 IPR_CANCEL_ALL_TIMEOUT);
3513}
3514
3515/**
3516 * ipr_dump_ioasa - Dump contents of IOASA
3517 * @ioa_cfg: ioa config struct
3518 * @ipr_cmd: ipr command struct
3519 *
3520 * This function is invoked by the interrupt handler when ops
3521 * fail. It will log the IOASA if appropriate. Only called
3522 * for GPDD ops.
3523 *
3524 * Return value:
3525 * none
3526 **/
3527static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3528 struct ipr_cmnd *ipr_cmd)
3529{
3530 int i;
3531 u16 data_len;
3532 u32 ioasc;
3533 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3534 __be32 *ioasa_data = (__be32 *)ioasa;
3535 int error_index;
3536
3537 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3538
3539 if (0 == ioasc)
3540 return;
3541
3542 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3543 return;
3544
3545 error_index = ipr_get_error(ioasc);
3546
3547 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3548 /* Don't log an error if the IOA already logged one */
3549 if (ioasa->ilid != 0)
3550 return;
3551
3552 if (ipr_error_table[error_index].log_ioasa == 0)
3553 return;
3554 }
3555
3556 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3557 ipr_error_table[error_index].error);
3558
3559 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3560 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3561 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3562 "Device End state: %s Phase: %s\n",
3563 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3564 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3565 }
3566
3567 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3568 data_len = sizeof(struct ipr_ioasa);
3569 else
3570 data_len = be16_to_cpu(ioasa->ret_stat_len);
3571
3572 ipr_err("IOASA Dump:\n");
3573
3574 for (i = 0; i < data_len / 4; i += 4) {
3575 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3576 be32_to_cpu(ioasa_data[i]),
3577 be32_to_cpu(ioasa_data[i+1]),
3578 be32_to_cpu(ioasa_data[i+2]),
3579 be32_to_cpu(ioasa_data[i+3]));
3580 }
3581}
3582
3583/**
3584 * ipr_gen_sense - Generate SCSI sense data from an IOASA
3585 * @ioasa: IOASA
3586 * @sense_buf: sense data buffer
3587 *
3588 * Return value:
3589 * none
3590 **/
3591static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
3592{
3593 u32 failing_lba;
3594 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
3595 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
3596 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3597 u32 ioasc = be32_to_cpu(ioasa->ioasc);
3598
3599 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
3600
3601 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
3602 return;
3603
3604 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
3605
3606 if (ipr_is_vset_device(res) &&
3607 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
3608 ioasa->u.vset.failing_lba_hi != 0) {
3609 sense_buf[0] = 0x72;
3610 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
3611 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
3612 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
3613
3614 sense_buf[7] = 12;
3615 sense_buf[8] = 0;
3616 sense_buf[9] = 0x0A;
3617 sense_buf[10] = 0x80;
3618
3619 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
3620
3621 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
3622 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
3623 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
3624 sense_buf[15] = failing_lba & 0x000000ff;
3625
3626 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3627
3628 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
3629 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
3630 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
3631 sense_buf[19] = failing_lba & 0x000000ff;
3632 } else {
3633 sense_buf[0] = 0x70;
3634 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
3635 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
3636 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
3637
3638 /* Illegal request */
3639 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
3640 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
3641 sense_buf[7] = 10; /* additional length */
3642
3643 /* IOARCB was in error */
3644 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
3645 sense_buf[15] = 0xC0;
3646 else /* Parameter data was invalid */
3647 sense_buf[15] = 0x80;
3648
3649 sense_buf[16] =
3650 ((IPR_FIELD_POINTER_MASK &
3651 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
3652 sense_buf[17] =
3653 (IPR_FIELD_POINTER_MASK &
3654 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
3655 } else {
3656 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
3657 if (ipr_is_vset_device(res))
3658 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3659 else
3660 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
3661
3662 sense_buf[0] |= 0x80; /* Or in the Valid bit */
3663 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
3664 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
3665 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
3666 sense_buf[6] = failing_lba & 0x000000ff;
3667 }
3668
3669 sense_buf[7] = 6; /* additional length */
3670 }
3671 }
3672}
3673
3674/**
3675 * ipr_erp_start - Process an error response for a SCSI op
3676 * @ioa_cfg: ioa config struct
3677 * @ipr_cmd: ipr command struct
3678 *
3679 * This function determines whether or not to initiate ERP
3680 * on the affected device.
3681 *
3682 * Return value:
3683 * nothing
3684 **/
3685static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
3686 struct ipr_cmnd *ipr_cmd)
3687{
3688 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3689 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3690 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3691
3692 if (!res) {
3693 ipr_scsi_eh_done(ipr_cmd);
3694 return;
3695 }
3696
3697 if (ipr_is_gscsi(res))
3698 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
3699 else
3700 ipr_gen_sense(ipr_cmd);
3701
3702 switch (ioasc & IPR_IOASC_IOASC_MASK) {
3703 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
3704 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3705 break;
3706 case IPR_IOASC_IR_RESOURCE_HANDLE:
3707 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3708 break;
3709 case IPR_IOASC_HW_SEL_TIMEOUT:
3710 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3711 res->needs_sync_complete = 1;
3712 break;
3713 case IPR_IOASC_SYNC_REQUIRED:
3714 if (!res->in_erp)
3715 res->needs_sync_complete = 1;
3716 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3717 break;
3718 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
3719 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
3720 break;
3721 case IPR_IOASC_BUS_WAS_RESET:
3722 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
3723 /*
3724 * Report the bus reset and ask for a retry. The device
3725 * will give CC/UA the next command.
3726 */
3727 if (!res->resetting_device)
3728 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
3729 scsi_cmd->result |= (DID_ERROR << 16);
3730 res->needs_sync_complete = 1;
3731 break;
3732 case IPR_IOASC_HW_DEV_BUS_STATUS:
3733 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
3734 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
3735 ipr_erp_cancel_all(ipr_cmd);
3736 return;
3737 }
3738 res->needs_sync_complete = 1;
3739 break;
3740 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
3741 break;
3742 default:
3743 scsi_cmd->result |= (DID_ERROR << 16);
3744 if (!ipr_is_vset_device(res))
3745 res->needs_sync_complete = 1;
3746 break;
3747 }
3748
3749 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3750 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3751 scsi_cmd->scsi_done(scsi_cmd);
3752}
3753
3754/**
3755 * ipr_scsi_done - mid-layer done function
3756 * @ipr_cmd: ipr command struct
3757 *
3758 * This function is invoked by the interrupt handler for
3759 * ops generated by the SCSI mid-layer
3760 *
3761 * Return value:
3762 * none
3763 **/
3764static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
3765{
3766 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3767 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3768 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3769
3770 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
3771
3772 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
3773 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3774 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3775 scsi_cmd->scsi_done(scsi_cmd);
3776 } else
3777 ipr_erp_start(ioa_cfg, ipr_cmd);
3778}
3779
3780/**
3781 * ipr_save_ioafp_mode_select - Save adapters mode select data
3782 * @ioa_cfg: ioa config struct
3783 * @scsi_cmd: scsi command struct
3784 *
3785 * This function saves mode select data for the adapter to
3786 * use following an adapter reset.
3787 *
3788 * Return value:
3789 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
3790 **/
3791static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
3792 struct scsi_cmnd *scsi_cmd)
3793{
3794 if (!ioa_cfg->saved_mode_pages) {
3795 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages),
3796 GFP_ATOMIC);
3797 if (!ioa_cfg->saved_mode_pages) {
3798 dev_err(&ioa_cfg->pdev->dev,
3799 "IOA mode select buffer allocation failed\n");
3800 return SCSI_MLQUEUE_HOST_BUSY;
3801 }
3802 }
3803
3804 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
3805 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
3806 return 0;
3807}
3808
3809/**
3810 * ipr_queuecommand - Queue a mid-layer request
3811 * @scsi_cmd: scsi command struct
3812 * @done: done function
3813 *
3814 * This function queues a request generated by the mid-layer.
3815 *
3816 * Return value:
3817 * 0 on success
3818 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
3819 * SCSI_MLQUEUE_HOST_BUSY if host is busy
3820 **/
3821static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
3822 void (*done) (struct scsi_cmnd *))
3823{
3824 struct ipr_ioa_cfg *ioa_cfg;
3825 struct ipr_resource_entry *res;
3826 struct ipr_ioarcb *ioarcb;
3827 struct ipr_cmnd *ipr_cmd;
3828 int rc = 0;
3829
3830 scsi_cmd->scsi_done = done;
3831 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3832 res = scsi_cmd->device->hostdata;
3833 scsi_cmd->result = (DID_OK << 16);
3834
3835 /*
3836 * We are currently blocking all devices due to a host reset
3837 * We have told the host to stop giving us new requests, but
3838 * ERP ops don't count. FIXME
3839 */
3840 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
3841 return SCSI_MLQUEUE_HOST_BUSY;
3842
3843 /*
3844 * FIXME - Create scsi_set_host_offline interface
3845 * and the ioa_is_dead check can be removed
3846 */
3847 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
3848 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3849 scsi_cmd->result = (DID_NO_CONNECT << 16);
3850 scsi_cmd->scsi_done(scsi_cmd);
3851 return 0;
3852 }
3853
3854 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3855 ioarcb = &ipr_cmd->ioarcb;
3856 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
3857
3858 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
3859 ipr_cmd->scsi_cmd = scsi_cmd;
3860 ioarcb->res_handle = res->cfgte.res_handle;
3861 ipr_cmd->done = ipr_scsi_done;
3862 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
3863
3864 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
3865 if (scsi_cmd->underflow == 0)
3866 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3867
3868 if (res->needs_sync_complete) {
3869 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
3870 res->needs_sync_complete = 0;
3871 }
3872
3873 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
3874 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
3875 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
3876 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
3877 }
3878
3879 if (scsi_cmd->cmnd[0] >= 0xC0 &&
3880 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
3881 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
3882
3883 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
3884 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
3885
3886 if (likely(rc == 0))
3887 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
3888
3889 if (likely(rc == 0)) {
3890 mb();
3891 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
3892 ioa_cfg->regs.ioarrin_reg);
3893 } else {
3894 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3895 return SCSI_MLQUEUE_HOST_BUSY;
3896 }
3897
3898 return 0;
3899}
3900
3901/**
3902 * ipr_info - Get information about the card/driver
3903 * @scsi_host: scsi host struct
3904 *
3905 * Return value:
3906 * pointer to buffer with description string
3907 **/
3908static const char * ipr_ioa_info(struct Scsi_Host *host)
3909{
3910 static char buffer[512];
3911 struct ipr_ioa_cfg *ioa_cfg;
3912 unsigned long lock_flags = 0;
3913
3914 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
3915
3916 spin_lock_irqsave(host->host_lock, lock_flags);
3917 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
3918 spin_unlock_irqrestore(host->host_lock, lock_flags);
3919
3920 return buffer;
3921}
3922
3923static struct scsi_host_template driver_template = {
3924 .module = THIS_MODULE,
3925 .name = "IPR",
3926 .info = ipr_ioa_info,
3927 .queuecommand = ipr_queuecommand,
3928 .eh_abort_handler = ipr_eh_abort,
3929 .eh_device_reset_handler = ipr_eh_dev_reset,
3930 .eh_host_reset_handler = ipr_eh_host_reset,
3931 .slave_alloc = ipr_slave_alloc,
3932 .slave_configure = ipr_slave_configure,
3933 .slave_destroy = ipr_slave_destroy,
3934 .change_queue_depth = ipr_change_queue_depth,
3935 .change_queue_type = ipr_change_queue_type,
3936 .bios_param = ipr_biosparam,
3937 .can_queue = IPR_MAX_COMMANDS,
3938 .this_id = -1,
3939 .sg_tablesize = IPR_MAX_SGLIST,
3940 .max_sectors = IPR_IOA_MAX_SECTORS,
3941 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
3942 .use_clustering = ENABLE_CLUSTERING,
3943 .shost_attrs = ipr_ioa_attrs,
3944 .sdev_attrs = ipr_dev_attrs,
3945 .proc_name = IPR_NAME
3946};
3947
3948#ifdef CONFIG_PPC_PSERIES
3949static const u16 ipr_blocked_processors[] = {
3950 PV_NORTHSTAR,
3951 PV_PULSAR,
3952 PV_POWER4,
3953 PV_ICESTAR,
3954 PV_SSTAR,
3955 PV_POWER4p,
3956 PV_630,
3957 PV_630p
3958};
3959
3960/**
3961 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
3962 * @ioa_cfg: ioa cfg struct
3963 *
3964 * Adapters that use Gemstone revision < 3.1 do not work reliably on
3965 * certain pSeries hardware. This function determines if the given
3966 * adapter is in one of these confgurations or not.
3967 *
3968 * Return value:
3969 * 1 if adapter is not supported / 0 if adapter is supported
3970 **/
3971static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
3972{
3973 u8 rev_id;
3974 int i;
3975
3976 if (ioa_cfg->type == 0x5702) {
3977 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
3978 &rev_id) == PCIBIOS_SUCCESSFUL) {
3979 if (rev_id < 4) {
3980 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
3981 if (__is_processor(ipr_blocked_processors[i]))
3982 return 1;
3983 }
3984 }
3985 }
3986 }
3987 return 0;
3988}
3989#else
3990#define ipr_invalid_adapter(ioa_cfg) 0
3991#endif
3992
3993/**
3994 * ipr_ioa_bringdown_done - IOA bring down completion.
3995 * @ipr_cmd: ipr command struct
3996 *
3997 * This function processes the completion of an adapter bring down.
3998 * It wakes any reset sleepers.
3999 *
4000 * Return value:
4001 * IPR_RC_JOB_RETURN
4002 **/
4003static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4004{
4005 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4006
4007 ENTER;
4008 ioa_cfg->in_reset_reload = 0;
4009 ioa_cfg->reset_retries = 0;
4010 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4011 wake_up_all(&ioa_cfg->reset_wait_q);
4012
4013 spin_unlock_irq(ioa_cfg->host->host_lock);
4014 scsi_unblock_requests(ioa_cfg->host);
4015 spin_lock_irq(ioa_cfg->host->host_lock);
4016 LEAVE;
4017
4018 return IPR_RC_JOB_RETURN;
4019}
4020
4021/**
4022 * ipr_ioa_reset_done - IOA reset completion.
4023 * @ipr_cmd: ipr command struct
4024 *
4025 * This function processes the completion of an adapter reset.
4026 * It schedules any necessary mid-layer add/removes and
4027 * wakes any reset sleepers.
4028 *
4029 * Return value:
4030 * IPR_RC_JOB_RETURN
4031 **/
4032static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4033{
4034 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4035 struct ipr_resource_entry *res;
4036 struct ipr_hostrcb *hostrcb, *temp;
4037 int i = 0;
4038
4039 ENTER;
4040 ioa_cfg->in_reset_reload = 0;
4041 ioa_cfg->allow_cmds = 1;
4042 ioa_cfg->reset_cmd = NULL;
4043
4044 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4045 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4046 ipr_trace;
4047 break;
4048 }
4049 }
4050 schedule_work(&ioa_cfg->work_q);
4051
4052 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4053 list_del(&hostrcb->queue);
4054 if (i++ < IPR_NUM_LOG_HCAMS)
4055 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4056 else
4057 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4058 }
4059
4060 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4061
4062 ioa_cfg->reset_retries = 0;
4063 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4064 wake_up_all(&ioa_cfg->reset_wait_q);
4065
4066 spin_unlock_irq(ioa_cfg->host->host_lock);
4067 scsi_unblock_requests(ioa_cfg->host);
4068 spin_lock_irq(ioa_cfg->host->host_lock);
4069
4070 if (!ioa_cfg->allow_cmds)
4071 scsi_block_requests(ioa_cfg->host);
4072
4073 LEAVE;
4074 return IPR_RC_JOB_RETURN;
4075}
4076
4077/**
4078 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4079 * @supported_dev: supported device struct
4080 * @vpids: vendor product id struct
4081 *
4082 * Return value:
4083 * none
4084 **/
4085static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4086 struct ipr_std_inq_vpids *vpids)
4087{
4088 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4089 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4090 supported_dev->num_records = 1;
4091 supported_dev->data_length =
4092 cpu_to_be16(sizeof(struct ipr_supported_device));
4093 supported_dev->reserved = 0;
4094}
4095
4096/**
4097 * ipr_set_supported_devs - Send Set Supported Devices for a device
4098 * @ipr_cmd: ipr command struct
4099 *
4100 * This function send a Set Supported Devices to the adapter
4101 *
4102 * Return value:
4103 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4104 **/
4105static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4106{
4107 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4108 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4109 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4110 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4111 struct ipr_resource_entry *res = ipr_cmd->u.res;
4112
4113 ipr_cmd->job_step = ipr_ioa_reset_done;
4114
4115 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
d0ad6f50 4116 if (!IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
1da177e4
LT		 4117 continue;
4118
4119 ipr_cmd->u.res = res;
4120 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4121
4122 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4123 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4124 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4125
4126 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4127 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4128 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4129
4130 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4131 sizeof(struct ipr_supported_device));
4132 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4133 offsetof(struct ipr_misc_cbs, supp_dev));
4134 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4135 ioarcb->write_data_transfer_length =
4136 cpu_to_be32(sizeof(struct ipr_supported_device));
4137
4138 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4139 IPR_SET_SUP_DEVICE_TIMEOUT);
4140
4141 ipr_cmd->job_step = ipr_set_supported_devs;
4142 return IPR_RC_JOB_RETURN;
4143 }
4144
4145 return IPR_RC_JOB_CONTINUE;
4146}
4147
4148/**
4149 * ipr_get_mode_page - Locate specified mode page
4150 * @mode_pages: mode page buffer
4151 * @page_code: page code to find
4152 * @len: minimum required length for mode page
4153 *
4154 * Return value:
4155 * pointer to mode page / NULL on failure
4156 **/
4157static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4158 u32 page_code, u32 len)
4159{
4160 struct ipr_mode_page_hdr *mode_hdr;
4161 u32 page_length;
4162 u32 length;
4163
4164 if (!mode_pages || (mode_pages->hdr.length == 0))
4165 return NULL;
4166
4167 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4168 mode_hdr = (struct ipr_mode_page_hdr *)
4169 (mode_pages->data + mode_pages->hdr.block_desc_len);
4170
4171 while (length) {
4172 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4173 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4174 return mode_hdr;
4175 break;
4176 } else {
4177 page_length = (sizeof(struct ipr_mode_page_hdr) +
4178 mode_hdr->page_length);
4179 length -= page_length;
4180 mode_hdr = (struct ipr_mode_page_hdr *)
4181 ((unsigned long)mode_hdr + page_length);
4182 }
4183 }
4184 return NULL;
4185}
4186
4187/**
4188 * ipr_check_term_power - Check for term power errors
4189 * @ioa_cfg: ioa config struct
4190 * @mode_pages: IOAFP mode pages buffer
4191 *
4192 * Check the IOAFP's mode page 28 for term power errors
4193 *
4194 * Return value:
4195 * nothing
4196 **/
4197static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4198 struct ipr_mode_pages *mode_pages)
4199{
4200 int i;
4201 int entry_length;
4202 struct ipr_dev_bus_entry *bus;
4203 struct ipr_mode_page28 *mode_page;
4204
4205 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4206 sizeof(struct ipr_mode_page28));
4207
4208 entry_length = mode_page->entry_length;
4209
4210 bus = mode_page->bus;
4211
4212 for (i = 0; i < mode_page->num_entries; i++) {
4213 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4214 dev_err(&ioa_cfg->pdev->dev,
4215 "Term power is absent on scsi bus %d\n",
4216 bus->res_addr.bus);
4217 }
4218
4219 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4220 }
4221}
4222
4223/**
4224 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4225 * @ioa_cfg: ioa config struct
4226 *
4227 * Looks through the config table checking for SES devices. If
4228 * the SES device is in the SES table indicating a maximum SCSI
4229 * bus speed, the speed is limited for the bus.
4230 *
4231 * Return value:
4232 * none
4233 **/
4234static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4235{
4236 u32 max_xfer_rate;
4237 int i;
4238
4239 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4240 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4241 ioa_cfg->bus_attr[i].bus_width);
4242
4243 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4244 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4245 }
4246}
4247
4248/**
4249 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4250 * @ioa_cfg: ioa config struct
4251 * @mode_pages: mode page 28 buffer
4252 *
4253 * Updates mode page 28 based on driver configuration
4254 *
4255 * Return value:
4256 * none
4257 **/
4258static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4259 struct ipr_mode_pages *mode_pages)
4260{
4261 int i, entry_length;
4262 struct ipr_dev_bus_entry *bus;
4263 struct ipr_bus_attributes *bus_attr;
4264 struct ipr_mode_page28 *mode_page;
4265
4266 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4267 sizeof(struct ipr_mode_page28));
4268
4269 entry_length = mode_page->entry_length;
4270
4271 /* Loop for each device bus entry */
4272 for (i = 0, bus = mode_page->bus;
4273 i < mode_page->num_entries;
4274 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4275 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4276 dev_err(&ioa_cfg->pdev->dev,
4277 "Invalid resource address reported: 0x%08X\n",
4278 IPR_GET_PHYS_LOC(bus->res_addr));
4279 continue;
4280 }
4281
4282 bus_attr = &ioa_cfg->bus_attr[i];
4283 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4284 bus->bus_width = bus_attr->bus_width;
4285 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4286 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4287 if (bus_attr->qas_enabled)
4288 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4289 else
4290 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4291 }
4292}
4293
4294/**
4295 * ipr_build_mode_select - Build a mode select command
4296 * @ipr_cmd: ipr command struct
4297 * @res_handle: resource handle to send command to
4298 * @parm: Byte 2 of Mode Sense command
4299 * @dma_addr: DMA buffer address
4300 * @xfer_len: data transfer length
4301 *
4302 * Return value:
4303 * none
4304 **/
4305static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4306 __be32 res_handle, u8 parm, u32 dma_addr,
4307 u8 xfer_len)
4308{
4309 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4310 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4311
4312 ioarcb->res_handle = res_handle;
4313 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4314 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4315 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4316 ioarcb->cmd_pkt.cdb[1] = parm;
4317 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4318
4319 ioadl->flags_and_data_len =
4320 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4321 ioadl->address = cpu_to_be32(dma_addr);
4322 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4323 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4324}
4325
4326/**
4327 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4328 * @ipr_cmd: ipr command struct
4329 *
4330 * This function sets up the SCSI bus attributes and sends
4331 * a Mode Select for Page 28 to activate them.
4332 *
4333 * Return value:
4334 * IPR_RC_JOB_RETURN
4335 **/
4336static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4337{
4338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4339 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4340 int length;
4341
4342 ENTER;
4343 if (ioa_cfg->saved_mode_pages) {
4344 memcpy(mode_pages, ioa_cfg->saved_mode_pages,
4345 ioa_cfg->saved_mode_page_len);
4346 length = ioa_cfg->saved_mode_page_len;
4347 } else {
4348 ipr_scsi_bus_speed_limit(ioa_cfg);
4349 ipr_check_term_power(ioa_cfg, mode_pages);
4350 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4351 length = mode_pages->hdr.length + 1;
4352 mode_pages->hdr.length = 0;
4353 }
4354
4355 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4356 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4357 length);
4358
4359 ipr_cmd->job_step = ipr_set_supported_devs;
4360 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4361 struct ipr_resource_entry, queue);
4362
4363 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4364
4365 LEAVE;
4366 return IPR_RC_JOB_RETURN;
4367}
4368
4369/**
4370 * ipr_build_mode_sense - Builds a mode sense command
4371 * @ipr_cmd: ipr command struct
4372 * @res: resource entry struct
4373 * @parm: Byte 2 of mode sense command
4374 * @dma_addr: DMA address of mode sense buffer
4375 * @xfer_len: Size of DMA buffer
4376 *
4377 * Return value:
4378 * none
4379 **/
4380static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4381 __be32 res_handle,
4382 u8 parm, u32 dma_addr, u8 xfer_len)
4383{
4384 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4385 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4386
4387 ioarcb->res_handle = res_handle;
4388 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4389 ioarcb->cmd_pkt.cdb[2] = parm;
4390 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4391 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4392
4393 ioadl->flags_and_data_len =
4394 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4395 ioadl->address = cpu_to_be32(dma_addr);
4396 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4397 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4398}
4399
4400/**
4401 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4402 * @ipr_cmd: ipr command struct
4403 *
4404 * This function send a Page 28 mode sense to the IOA to
4405 * retrieve SCSI bus attributes.
4406 *
4407 * Return value:
4408 * IPR_RC_JOB_RETURN
4409 **/
4410static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4411{
4412 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4413
4414 ENTER;
4415 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4416 0x28, ioa_cfg->vpd_cbs_dma +
4417 offsetof(struct ipr_misc_cbs, mode_pages),
4418 sizeof(struct ipr_mode_pages));
4419
4420 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
4421
4422 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4423
4424 LEAVE;
4425 return IPR_RC_JOB_RETURN;
4426}
4427
4428/**
4429 * ipr_init_res_table - Initialize the resource table
4430 * @ipr_cmd: ipr command struct
4431 *
4432 * This function looks through the existing resource table, comparing
4433 * it with the config table. This function will take care of old/new
4434 * devices and schedule adding/removing them from the mid-layer
4435 * as appropriate.
4436 *
4437 * Return value:
4438 * IPR_RC_JOB_CONTINUE
4439 **/
4440static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4441{
4442 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4443 struct ipr_resource_entry *res, *temp;
4444 struct ipr_config_table_entry *cfgte;
4445 int found, i;
4446 LIST_HEAD(old_res);
4447
4448 ENTER;
4449 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4450 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4451
4452 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4453 list_move_tail(&res->queue, &old_res);
4454
4455 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4456 cfgte = &ioa_cfg->cfg_table->dev[i];
4457 found = 0;
4458
4459 list_for_each_entry_safe(res, temp, &old_res, queue) {
4460 if (!memcmp(&res->cfgte.res_addr,
4461 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4462 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4463 found = 1;
4464 break;
4465 }
4466 }
4467
4468 if (!found) {
4469 if (list_empty(&ioa_cfg->free_res_q)) {
4470 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
4471 break;
4472 }
4473
4474 found = 1;
4475 res = list_entry(ioa_cfg->free_res_q.next,
4476 struct ipr_resource_entry, queue);
4477 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4478 ipr_init_res_entry(res);
4479 res->add_to_ml = 1;
4480 }
4481
4482 if (found)
4483 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
4484 }
4485
4486 list_for_each_entry_safe(res, temp, &old_res, queue) {
4487 if (res->sdev) {
4488 res->del_from_ml = 1;
4489 res->sdev->hostdata = NULL;
4490 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4491 } else {
4492 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
4493 }
4494 }
4495
4496 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
4497
4498 LEAVE;
4499 return IPR_RC_JOB_CONTINUE;
4500}
4501
4502/**
4503 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4504 * @ipr_cmd: ipr command struct
4505 *
4506 * This function sends a Query IOA Configuration command
4507 * to the adapter to retrieve the IOA configuration table.
4508 *
4509 * Return value:
4510 * IPR_RC_JOB_RETURN
4511 **/
4512static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
4513{
4514 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4515 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4516 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4517 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
4518
4519 ENTER;
4520 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
4521 ucode_vpd->major_release, ucode_vpd->card_type,
4522 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
4523 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4524 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4525
4526 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
4527 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
4528 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
4529
4530 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4531 ioarcb->read_data_transfer_length =
4532 cpu_to_be32(sizeof(struct ipr_config_table));
4533
4534 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
4535 ioadl->flags_and_data_len =
4536 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
4537
4538 ipr_cmd->job_step = ipr_init_res_table;
4539
4540 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4541
4542 LEAVE;
4543 return IPR_RC_JOB_RETURN;
4544}
4545
4546/**
4547 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
4548 * @ipr_cmd: ipr command struct
4549 *
4550 * This utility function sends an inquiry to the adapter.
4551 *
4552 * Return value:
4553 * none
4554 **/
4555static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
4556 u32 dma_addr, u8 xfer_len)
4557{
4558 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4559 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4560
4561 ENTER;
4562 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4563 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4564
4565 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
4566 ioarcb->cmd_pkt.cdb[1] = flags;
4567 ioarcb->cmd_pkt.cdb[2] = page;
4568 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4569
4570 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4571 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4572
4573 ioadl->address = cpu_to_be32(dma_addr);
4574 ioadl->flags_and_data_len =
4575 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4576
4577 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4578 LEAVE;
4579}
4580
4581/**
4582 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
4583 * @ipr_cmd: ipr command struct
4584 *
4585 * This function sends a Page 3 inquiry to the adapter
4586 * to retrieve software VPD information.
4587 *
4588 * Return value:
4589 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4590 **/
4591static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
4592{
4593 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4594 char type[5];
4595
4596 ENTER;
4597
4598 /* Grab the type out of the VPD and store it away */
4599 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
4600 type[4] = '\0';
4601 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
4602
4603 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
4604
4605 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
4606 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
4607 sizeof(struct ipr_inquiry_page3));
4608
4609 LEAVE;
4610 return IPR_RC_JOB_RETURN;
4611}
4612
4613/**
4614 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
4615 * @ipr_cmd: ipr command struct
4616 *
4617 * This function sends a standard inquiry to the adapter.
4618 *
4619 * Return value:
4620 * IPR_RC_JOB_RETURN
4621 **/
4622static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
4623{
4624 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4625
4626 ENTER;
4627 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
4628
4629 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
4630 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
4631 sizeof(struct ipr_ioa_vpd));
4632
4633 LEAVE;
4634 return IPR_RC_JOB_RETURN;
4635}
4636
4637/**
4638 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
4639 * @ipr_cmd: ipr command struct
4640 *
4641 * This function send an Identify Host Request Response Queue
4642 * command to establish the HRRQ with the adapter.
4643 *
4644 * Return value:
4645 * IPR_RC_JOB_RETURN
4646 **/
4647static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
4648{
4649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4650 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4651
4652 ENTER;
4653 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
4654
4655 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
4656 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4657
4658 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4659 ioarcb->cmd_pkt.cdb[2] =
4660 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
4661 ioarcb->cmd_pkt.cdb[3] =
4662 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
4663 ioarcb->cmd_pkt.cdb[4] =
4664 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
4665 ioarcb->cmd_pkt.cdb[5] =
4666 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
4667 ioarcb->cmd_pkt.cdb[7] =
4668 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
4669 ioarcb->cmd_pkt.cdb[8] =
4670 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
4671
4672 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
4673
4674 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4675
4676 LEAVE;
4677 return IPR_RC_JOB_RETURN;
4678}
4679
4680/**
4681 * ipr_reset_timer_done - Adapter reset timer function
4682 * @ipr_cmd: ipr command struct
4683 *
4684 * Description: This function is used in adapter reset processing
4685 * for timing events. If the reset_cmd pointer in the IOA
4686 * config struct is not this adapter's we are doing nested
4687 * resets and fail_all_ops will take care of freeing the
4688 * command block.
4689 *
4690 * Return value:
4691 * none
4692 **/
4693static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
4694{
4695 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4696 unsigned long lock_flags = 0;
4697
4698 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4699
4700 if (ioa_cfg->reset_cmd == ipr_cmd) {
4701 list_del(&ipr_cmd->queue);
4702 ipr_cmd->done(ipr_cmd);
4703 }
4704
4705 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4706}
4707
4708/**
4709 * ipr_reset_start_timer - Start a timer for adapter reset job
4710 * @ipr_cmd: ipr command struct
4711 * @timeout: timeout value
4712 *
4713 * Description: This function is used in adapter reset processing
4714 * for timing events. If the reset_cmd pointer in the IOA
4715 * config struct is not this adapter's we are doing nested
4716 * resets and fail_all_ops will take care of freeing the
4717 * command block.
4718 *
4719 * Return value:
4720 * none
4721 **/
4722static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
4723 unsigned long timeout)
4724{
4725 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
4726 ipr_cmd->done = ipr_reset_ioa_job;
4727
4728 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4729 ipr_cmd->timer.expires = jiffies + timeout;
4730 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
4731 add_timer(&ipr_cmd->timer);
4732}
4733
4734/**
4735 * ipr_init_ioa_mem - Initialize ioa_cfg control block
4736 * @ioa_cfg: ioa cfg struct
4737 *
4738 * Return value:
4739 * nothing
4740 **/
4741static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
4742{
4743 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
4744
4745 /* Initialize Host RRQ pointers */
4746 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
4747 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
4748 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4749 ioa_cfg->toggle_bit = 1;
4750
4751 /* Zero out config table */
4752 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
4753}
4754
4755/**
4756 * ipr_reset_enable_ioa - Enable the IOA following a reset.
4757 * @ipr_cmd: ipr command struct
4758 *
4759 * This function reinitializes some control blocks and
4760 * enables destructive diagnostics on the adapter.
4761 *
4762 * Return value:
4763 * IPR_RC_JOB_RETURN
4764 **/
4765static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
4766{
4767 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4768 volatile u32 int_reg;
4769
4770 ENTER;
4771 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
4772 ipr_init_ioa_mem(ioa_cfg);
4773
4774 ioa_cfg->allow_interrupts = 1;
4775 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4776
4777 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4778 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
4779 ioa_cfg->regs.clr_interrupt_mask_reg);
4780 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4781 return IPR_RC_JOB_CONTINUE;
4782 }
4783
4784 /* Enable destructive diagnostics on IOA */
4785 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg);
4786
4787 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
4788 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4789
4790 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
4791
4792 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4793 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
4794 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
4795 ipr_cmd->done = ipr_reset_ioa_job;
4796 add_timer(&ipr_cmd->timer);
4797 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4798
4799 LEAVE;
4800 return IPR_RC_JOB_RETURN;
4801}
4802
4803/**
4804 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
4805 * @ipr_cmd: ipr command struct
4806 *
4807 * This function is invoked when an adapter dump has run out
4808 * of processing time.
4809 *
4810 * Return value:
4811 * IPR_RC_JOB_CONTINUE
4812 **/
4813static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
4814{
4815 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4816
4817 if (ioa_cfg->sdt_state == GET_DUMP)
4818 ioa_cfg->sdt_state = ABORT_DUMP;
4819
4820 ipr_cmd->job_step = ipr_reset_alert;
4821
4822 return IPR_RC_JOB_CONTINUE;
4823}
4824
4825/**
4826 * ipr_unit_check_no_data - Log a unit check/no data error log
4827 * @ioa_cfg: ioa config struct
4828 *
4829 * Logs an error indicating the adapter unit checked, but for some
4830 * reason, we were unable to fetch the unit check buffer.
4831 *
4832 * Return value:
4833 * nothing
4834 **/
4835static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
4836{
4837 ioa_cfg->errors_logged++;
4838 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
4839}
4840
4841/**
4842 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
4843 * @ioa_cfg: ioa config struct
4844 *
4845 * Fetches the unit check buffer from the adapter by clocking the data
4846 * through the mailbox register.
4847 *
4848 * Return value:
4849 * nothing
4850 **/
4851static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
4852{
4853 unsigned long mailbox;
4854 struct ipr_hostrcb *hostrcb;
4855 struct ipr_uc_sdt sdt;
4856 int rc, length;
4857
4858 mailbox = readl(ioa_cfg->ioa_mailbox);
4859
4860 if (!ipr_sdt_is_fmt2(mailbox)) {
4861 ipr_unit_check_no_data(ioa_cfg);
4862 return;
4863 }
4864
4865 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
4866 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
4867 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
4868
4869 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
4870 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
4871 ipr_unit_check_no_data(ioa_cfg);
4872 return;
4873 }
4874
4875 /* Find length of the first sdt entry (UC buffer) */
4876 length = (be32_to_cpu(sdt.entry[0].end_offset) -
4877 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
4878
4879 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
4880 struct ipr_hostrcb, queue);
4881 list_del(&hostrcb->queue);
4882 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
4883
4884 rc = ipr_get_ldump_data_section(ioa_cfg,
4885 be32_to_cpu(sdt.entry[0].bar_str_offset),
4886 (__be32 *)&hostrcb->hcam,
4887 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
4888
4889 if (!rc)
4890 ipr_handle_log_data(ioa_cfg, hostrcb);
4891 else
4892 ipr_unit_check_no_data(ioa_cfg);
4893
4894 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4895}
4896
4897/**
4898 * ipr_reset_restore_cfg_space - Restore PCI config space.
4899 * @ipr_cmd: ipr command struct
4900 *
4901 * Description: This function restores the saved PCI config space of
4902 * the adapter, fails all outstanding ops back to the callers, and
4903 * fetches the dump/unit check if applicable to this reset.
4904 *
4905 * Return value:
4906 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4907 **/
4908static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
4909{
4910 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4911 int rc;
4912
4913 ENTER;
b30197d2 4914 pci_unblock_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 4915 rc = pci_restore_state(ioa_cfg->pdev);
4916
4917 if (rc != PCIBIOS_SUCCESSFUL) {
4918 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4919 return IPR_RC_JOB_CONTINUE;
4920 }
4921
4922 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
4923 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4924 return IPR_RC_JOB_CONTINUE;
4925 }
4926
4927 ipr_fail_all_ops(ioa_cfg);
4928
4929 if (ioa_cfg->ioa_unit_checked) {
4930 ioa_cfg->ioa_unit_checked = 0;
4931 ipr_get_unit_check_buffer(ioa_cfg);
4932 ipr_cmd->job_step = ipr_reset_alert;
4933 ipr_reset_start_timer(ipr_cmd, 0);
4934 return IPR_RC_JOB_RETURN;
4935 }
4936
4937 if (ioa_cfg->in_ioa_bringdown) {
4938 ipr_cmd->job_step = ipr_ioa_bringdown_done;
4939 } else {
4940 ipr_cmd->job_step = ipr_reset_enable_ioa;
4941
4942 if (GET_DUMP == ioa_cfg->sdt_state) {
4943 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
4944 ipr_cmd->job_step = ipr_reset_wait_for_dump;
4945 schedule_work(&ioa_cfg->work_q);
4946 return IPR_RC_JOB_RETURN;
4947 }
4948 }
4949
4950 ENTER;
4951 return IPR_RC_JOB_CONTINUE;
4952}
4953
4954/**
4955 * ipr_reset_start_bist - Run BIST on the adapter.
4956 * @ipr_cmd: ipr command struct
4957 *
4958 * Description: This function runs BIST on the adapter, then delays 2 seconds.
4959 *
4960 * Return value:
4961 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4962 **/
4963static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
4964{
4965 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4966 int rc;
4967
4968 ENTER;
b30197d2 4969 pci_block_user_cfg_access(ioa_cfg->pdev);
1da177e4
LT		 4970 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
4971
4972 if (rc != PCIBIOS_SUCCESSFUL) {
4973 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4974 rc = IPR_RC_JOB_CONTINUE;
4975 } else {
4976 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
4977 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
4978 rc = IPR_RC_JOB_RETURN;
4979 }
4980
4981 LEAVE;
4982 return rc;
4983}
4984
4985/**
4986 * ipr_reset_allowed - Query whether or not IOA can be reset
4987 * @ioa_cfg: ioa config struct
4988 *
4989 * Return value:
4990 * 0 if reset not allowed / non-zero if reset is allowed
4991 **/
4992static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
4993{
4994 volatile u32 temp_reg;
4995
4996 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4997 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
4998}
4999
5000/**
5001 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5002 * @ipr_cmd: ipr command struct
5003 *
5004 * Description: This function waits for adapter permission to run BIST,
5005 * then runs BIST. If the adapter does not give permission after a
5006 * reasonable time, we will reset the adapter anyway. The impact of
5007 * resetting the adapter without warning the adapter is the risk of
5008 * losing the persistent error log on the adapter. If the adapter is
5009 * reset while it is writing to the flash on the adapter, the flash
5010 * segment will have bad ECC and be zeroed.
5011 *
5012 * Return value:
5013 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5014 **/
5015static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5016{
5017 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5018 int rc = IPR_RC_JOB_RETURN;
5019
5020 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5021 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5022 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5023 } else {
5024 ipr_cmd->job_step = ipr_reset_start_bist;
5025 rc = IPR_RC_JOB_CONTINUE;
5026 }
5027
5028 return rc;
5029}
5030
5031/**
5032 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5033 * @ipr_cmd: ipr command struct
5034 *
5035 * Description: This function alerts the adapter that it will be reset.
5036 * If memory space is not currently enabled, proceed directly
5037 * to running BIST on the adapter. The timer must always be started
5038 * so we guarantee we do not run BIST from ipr_isr.
5039 *
5040 * Return value:
5041 * IPR_RC_JOB_RETURN
5042 **/
5043static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5044{
5045 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5046 u16 cmd_reg;
5047 int rc;
5048
5049 ENTER;
5050 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5051
5052 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5053 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5054 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5055 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5056 } else {
5057 ipr_cmd->job_step = ipr_reset_start_bist;
5058 }
5059
5060 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5061 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5062
5063 LEAVE;
5064 return IPR_RC_JOB_RETURN;
5065}
5066
5067/**
5068 * ipr_reset_ucode_download_done - Microcode download completion
5069 * @ipr_cmd: ipr command struct
5070 *
5071 * Description: This function unmaps the microcode download buffer.
5072 *
5073 * Return value:
5074 * IPR_RC_JOB_CONTINUE
5075 **/
5076static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5077{
5078 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5079 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5080
5081 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5082 sglist->num_sg, DMA_TO_DEVICE);
5083
5084 ipr_cmd->job_step = ipr_reset_alert;
5085 return IPR_RC_JOB_CONTINUE;
5086}
5087
5088/**
5089 * ipr_reset_ucode_download - Download microcode to the adapter
5090 * @ipr_cmd: ipr command struct
5091 *
5092 * Description: This function checks to see if it there is microcode
5093 * to download to the adapter. If there is, a download is performed.
5094 *
5095 * Return value:
5096 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5097 **/
5098static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5099{
5100 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5101 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5102
5103 ENTER;
5104 ipr_cmd->job_step = ipr_reset_alert;
5105
5106 if (!sglist)
5107 return IPR_RC_JOB_CONTINUE;
5108
5109 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5110 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5111 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5112 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5113 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5114 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5115 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5116
5117 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) {
5118 dev_err(&ioa_cfg->pdev->dev,
5119 "Failed to map microcode download buffer\n");
5120 return IPR_RC_JOB_CONTINUE;
5121 }
5122
5123 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5124
5125 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5126 IPR_WRITE_BUFFER_TIMEOUT);
5127
5128 LEAVE;
5129 return IPR_RC_JOB_RETURN;
5130}
5131
5132/**
5133 * ipr_reset_shutdown_ioa - Shutdown the adapter
5134 * @ipr_cmd: ipr command struct
5135 *
5136 * Description: This function issues an adapter shutdown of the
5137 * specified type to the specified adapter as part of the
5138 * adapter reset job.
5139 *
5140 * Return value:
5141 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5142 **/
5143static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5144{
5145 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5146 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5147 unsigned long timeout;
5148 int rc = IPR_RC_JOB_CONTINUE;
5149
5150 ENTER;
5151 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5152 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5153 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5154 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5155 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5156
5157 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5158 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5159 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5160 timeout = IPR_INTERNAL_TIMEOUT;
5161 else
5162 timeout = IPR_SHUTDOWN_TIMEOUT;
5163
5164 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5165
5166 rc = IPR_RC_JOB_RETURN;
5167 ipr_cmd->job_step = ipr_reset_ucode_download;
5168 } else
5169 ipr_cmd->job_step = ipr_reset_alert;
5170
5171 LEAVE;
5172 return rc;
5173}
5174
5175/**
5176 * ipr_reset_ioa_job - Adapter reset job
5177 * @ipr_cmd: ipr command struct
5178 *
5179 * Description: This function is the job router for the adapter reset job.
5180 *
5181 * Return value:
5182 * none
5183 **/
5184static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5185{
5186 u32 rc, ioasc;
5187 unsigned long scratch = ipr_cmd->u.scratch;
5188 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5189
5190 do {
5191 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5192
5193 if (ioa_cfg->reset_cmd != ipr_cmd) {
5194 /*
5195 * We are doing nested adapter resets and this is
5196 * not the current reset job.
5197 */
5198 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5199 return;
5200 }
5201
5202 if (IPR_IOASC_SENSE_KEY(ioasc)) {
5203 dev_err(&ioa_cfg->pdev->dev,
5204 "0x%02X failed with IOASC: 0x%08X\n",
5205 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5206
5207 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5208 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5209 return;
5210 }
5211
5212 ipr_reinit_ipr_cmnd(ipr_cmd);
5213 ipr_cmd->u.scratch = scratch;
5214 rc = ipr_cmd->job_step(ipr_cmd);
5215 } while(rc == IPR_RC_JOB_CONTINUE);
5216}
5217
5218/**
5219 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5220 * @ioa_cfg: ioa config struct
5221 * @job_step: first job step of reset job
5222 * @shutdown_type: shutdown type
5223 *
5224 * Description: This function will initiate the reset of the given adapter
5225 * starting at the selected job step.
5226 * If the caller needs to wait on the completion of the reset,
5227 * the caller must sleep on the reset_wait_q.
5228 *
5229 * Return value:
5230 * none
5231 **/
5232static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5233 int (*job_step) (struct ipr_cmnd *),
5234 enum ipr_shutdown_type shutdown_type)
5235{
5236 struct ipr_cmnd *ipr_cmd;
5237
5238 ioa_cfg->in_reset_reload = 1;
5239 ioa_cfg->allow_cmds = 0;
5240 scsi_block_requests(ioa_cfg->host);
5241
5242 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5243 ioa_cfg->reset_cmd = ipr_cmd;
5244 ipr_cmd->job_step = job_step;
5245 ipr_cmd->u.shutdown_type = shutdown_type;
5246
5247 ipr_reset_ioa_job(ipr_cmd);
5248}
5249
5250/**
5251 * ipr_initiate_ioa_reset - Initiate an adapter reset
5252 * @ioa_cfg: ioa config struct
5253 * @shutdown_type: shutdown type
5254 *
5255 * Description: This function will initiate the reset of the given adapter.
5256 * If the caller needs to wait on the completion of the reset,
5257 * the caller must sleep on the reset_wait_q.
5258 *
5259 * Return value:
5260 * none
5261 **/
5262static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5263 enum ipr_shutdown_type shutdown_type)
5264{
5265 if (ioa_cfg->ioa_is_dead)
5266 return;
5267
5268 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5269 ioa_cfg->sdt_state = ABORT_DUMP;
5270
5271 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5272 dev_err(&ioa_cfg->pdev->dev,
5273 "IOA taken offline - error recovery failed\n");
5274
5275 ioa_cfg->reset_retries = 0;
5276 ioa_cfg->ioa_is_dead = 1;
5277
5278 if (ioa_cfg->in_ioa_bringdown) {
5279 ioa_cfg->reset_cmd = NULL;
5280 ioa_cfg->in_reset_reload = 0;
5281 ipr_fail_all_ops(ioa_cfg);
5282 wake_up_all(&ioa_cfg->reset_wait_q);
5283
5284 spin_unlock_irq(ioa_cfg->host->host_lock);
5285 scsi_unblock_requests(ioa_cfg->host);
5286 spin_lock_irq(ioa_cfg->host->host_lock);
5287 return;
5288 } else {
5289 ioa_cfg->in_ioa_bringdown = 1;
5290 shutdown_type = IPR_SHUTDOWN_NONE;
5291 }
5292 }
5293
5294 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5295 shutdown_type);
5296}
5297
5298/**
5299 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5300 * @ioa_cfg: ioa cfg struct
5301 *
5302 * Description: This is the second phase of adapter intialization
5303 * This function takes care of initilizing the adapter to the point
5304 * where it can accept new commands.
5305
5306 * Return value:
5307 * 0 on sucess / -EIO on failure
5308 **/
5309static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5310{
5311 int rc = 0;
5312 unsigned long host_lock_flags = 0;
5313
5314 ENTER;
5315 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5316 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
5317 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE);
5318
5319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5320 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5321 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5322
5323 if (ioa_cfg->ioa_is_dead) {
5324 rc = -EIO;
5325 } else if (ipr_invalid_adapter(ioa_cfg)) {
5326 if (!ipr_testmode)
5327 rc = -EIO;
5328
5329 dev_err(&ioa_cfg->pdev->dev,
5330 "Adapter not supported in this hardware configuration.\n");
5331 }
5332
5333 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5334
5335 LEAVE;
5336 return rc;
5337}
5338
5339/**
5340 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5341 * @ioa_cfg: ioa config struct
5342 *
5343 * Return value:
5344 * none
5345 **/
5346static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5347{
5348 int i;
5349
5350 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5351 if (ioa_cfg->ipr_cmnd_list[i])
5352 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5353 ioa_cfg->ipr_cmnd_list[i],
5354 ioa_cfg->ipr_cmnd_list_dma[i]);
5355
5356 ioa_cfg->ipr_cmnd_list[i] = NULL;
5357 }
5358
5359 if (ioa_cfg->ipr_cmd_pool)
5360 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
5361
5362 ioa_cfg->ipr_cmd_pool = NULL;
5363}
5364
5365/**
5366 * ipr_free_mem - Frees memory allocated for an adapter
5367 * @ioa_cfg: ioa cfg struct
5368 *
5369 * Return value:
5370 * nothing
5371 **/
5372static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
5373{
5374 int i;
5375
5376 kfree(ioa_cfg->res_entries);
5377 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
5378 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5379 ipr_free_cmd_blks(ioa_cfg);
5380 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5381 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5382 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
5383 ioa_cfg->cfg_table,
5384 ioa_cfg->cfg_table_dma);
5385
5386 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5387 pci_free_consistent(ioa_cfg->pdev,
5388 sizeof(struct ipr_hostrcb),
5389 ioa_cfg->hostrcb[i],
5390 ioa_cfg->hostrcb_dma[i]);
5391 }
5392
5393 ipr_free_dump(ioa_cfg);
5394 kfree(ioa_cfg->saved_mode_pages);
5395 kfree(ioa_cfg->trace);
5396}
5397
5398/**
5399 * ipr_free_all_resources - Free all allocated resources for an adapter.
5400 * @ipr_cmd: ipr command struct
5401 *
5402 * This function frees all allocated resources for the
5403 * specified adapter.
5404 *
5405 * Return value:
5406 * none
5407 **/
5408static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
5409{
5410 struct pci_dev *pdev = ioa_cfg->pdev;
5411
5412 ENTER;
5413 free_irq(pdev->irq, ioa_cfg);
5414 iounmap(ioa_cfg->hdw_dma_regs);
5415 pci_release_regions(pdev);
5416 ipr_free_mem(ioa_cfg);
5417 scsi_host_put(ioa_cfg->host);
5418 pci_disable_device(pdev);
5419 LEAVE;
5420}
5421
5422/**
5423 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5424 * @ioa_cfg: ioa config struct
5425 *
5426 * Return value:
5427 * 0 on success / -ENOMEM on allocation failure
5428 **/
5429static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5430{
5431 struct ipr_cmnd *ipr_cmd;
5432 struct ipr_ioarcb *ioarcb;
5433 dma_addr_t dma_addr;
5434 int i;
5435
5436 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
5437 sizeof(struct ipr_cmnd), 8, 0);
5438
5439 if (!ioa_cfg->ipr_cmd_pool)
5440 return -ENOMEM;
5441
5442 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5443 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
5444
5445 if (!ipr_cmd) {
5446 ipr_free_cmd_blks(ioa_cfg);
5447 return -ENOMEM;
5448 }
5449
5450 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
5451 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
5452 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
5453
5454 ioarcb = &ipr_cmd->ioarcb;
5455 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
5456 ioarcb->host_response_handle = cpu_to_be32(i << 2);
5457 ioarcb->write_ioadl_addr =
5458 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
5459 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5460 ioarcb->ioasa_host_pci_addr =
5461 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
5462 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
5463 ipr_cmd->cmd_index = i;
5464 ipr_cmd->ioa_cfg = ioa_cfg;
5465 ipr_cmd->sense_buffer_dma = dma_addr +
5466 offsetof(struct ipr_cmnd, sense_buffer);
5467
5468 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5469 }
5470
5471 return 0;
5472}
5473
5474/**
5475 * ipr_alloc_mem - Allocate memory for an adapter
5476 * @ioa_cfg: ioa config struct
5477 *
5478 * Return value:
5479 * 0 on success / non-zero for error
5480 **/
5481static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
5482{
5483 struct pci_dev *pdev = ioa_cfg->pdev;
5484 int i, rc = -ENOMEM;
5485
5486 ENTER;
5487 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) *
5488 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
5489
5490 if (!ioa_cfg->res_entries)
5491 goto out;
5492
5493 memset(ioa_cfg->res_entries, 0,
5494 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS);
5495
5496 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
5497 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
5498
5499 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
5500 sizeof(struct ipr_misc_cbs),
5501 &ioa_cfg->vpd_cbs_dma);
5502
5503 if (!ioa_cfg->vpd_cbs)
5504 goto out_free_res_entries;
5505
5506 if (ipr_alloc_cmd_blks(ioa_cfg))
5507 goto out_free_vpd_cbs;
5508
5509 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
5510 sizeof(u32) * IPR_NUM_CMD_BLKS,
5511 &ioa_cfg->host_rrq_dma);
5512
5513 if (!ioa_cfg->host_rrq)
5514 goto out_ipr_free_cmd_blocks;
5515
5516 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
5517 sizeof(struct ipr_config_table),
5518 &ioa_cfg->cfg_table_dma);
5519
5520 if (!ioa_cfg->cfg_table)
5521 goto out_free_host_rrq;
5522
5523 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5524 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
5525 sizeof(struct ipr_hostrcb),
5526 &ioa_cfg->hostrcb_dma[i]);
5527
5528 if (!ioa_cfg->hostrcb[i])
5529 goto out_free_hostrcb_dma;
5530
5531 ioa_cfg->hostrcb[i]->hostrcb_dma =
5532 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
5533 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
5534 }
5535
5536 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) *
5537 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
5538
5539 if (!ioa_cfg->trace)
5540 goto out_free_hostrcb_dma;
5541
5542 memset(ioa_cfg->trace, 0,
5543 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES);
5544
5545 rc = 0;
5546out:
5547 LEAVE;
5548 return rc;
5549
5550out_free_hostrcb_dma:
5551 while (i-- > 0) {
5552 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
5553 ioa_cfg->hostrcb[i],
5554 ioa_cfg->hostrcb_dma[i]);
5555 }
5556 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
5557 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
5558out_free_host_rrq:
5559 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5560 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5561out_ipr_free_cmd_blocks:
5562 ipr_free_cmd_blks(ioa_cfg);
5563out_free_vpd_cbs:
5564 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
5565 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5566out_free_res_entries:
5567 kfree(ioa_cfg->res_entries);
5568 goto out;
5569}
5570
5571/**
5572 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
5573 * @ioa_cfg: ioa config struct
5574 *
5575 * Return value:
5576 * none
5577 **/
5578static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
5579{
5580 int i;
5581
5582 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5583 ioa_cfg->bus_attr[i].bus = i;
5584 ioa_cfg->bus_attr[i].qas_enabled = 0;
5585 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
5586 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
5587 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
5588 else
5589 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
5590 }
5591}
5592
5593/**
5594 * ipr_init_ioa_cfg - Initialize IOA config struct
5595 * @ioa_cfg: ioa config struct
5596 * @host: scsi host struct
5597 * @pdev: PCI dev struct
5598 *
5599 * Return value:
5600 * none
5601 **/
5602static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
5603 struct Scsi_Host *host, struct pci_dev *pdev)
5604{
5605 const struct ipr_interrupt_offsets *p;
5606 struct ipr_interrupts *t;
5607 void __iomem *base;
5608
5609 ioa_cfg->host = host;
5610 ioa_cfg->pdev = pdev;
5611 ioa_cfg->log_level = ipr_log_level;
5612 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
5613 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
5614 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
5615 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
5616 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
5617 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
5618 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
5619 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
5620
5621 INIT_LIST_HEAD(&ioa_cfg->free_q);
5622 INIT_LIST_HEAD(&ioa_cfg->pending_q);
5623 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
5624 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
5625 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
5626 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
5627 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
5628 init_waitqueue_head(&ioa_cfg->reset_wait_q);
5629 ioa_cfg->sdt_state = INACTIVE;
5630
5631 ipr_initialize_bus_attr(ioa_cfg);
5632
5633 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
5634 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
5635 host->max_channel = IPR_MAX_BUS_TO_SCAN;
5636 host->unique_id = host->host_no;
5637 host->max_cmd_len = IPR_MAX_CDB_LEN;
5638 pci_set_drvdata(pdev, ioa_cfg);
5639
5640 p = &ioa_cfg->chip_cfg->regs;
5641 t = &ioa_cfg->regs;
5642 base = ioa_cfg->hdw_dma_regs;
5643
5644 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
5645 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
5646 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
5647 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
5648 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
5649 t->ioarrin_reg = base + p->ioarrin_reg;
5650 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
5651 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
5652 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
5653}
5654
5655/**
5656 * ipr_get_chip_cfg - Find adapter chip configuration
5657 * @dev_id: PCI device id struct
5658 *
5659 * Return value:
5660 * ptr to chip config on success / NULL on failure
5661 **/
5662static const struct ipr_chip_cfg_t * __devinit
5663ipr_get_chip_cfg(const struct pci_device_id *dev_id)
5664{
5665 int i;
5666
5667 if (dev_id->driver_data)
5668 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
5669
5670 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
5671 if (ipr_chip[i].vendor == dev_id->vendor &&
5672 ipr_chip[i].device == dev_id->device)
5673 return ipr_chip[i].cfg;
5674 return NULL;
5675}
5676
5677/**
5678 * ipr_probe_ioa - Allocates memory and does first stage of initialization
5679 * @pdev: PCI device struct
5680 * @dev_id: PCI device id struct
5681 *
5682 * Return value:
5683 * 0 on success / non-zero on failure
5684 **/
5685static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
5686 const struct pci_device_id *dev_id)
5687{
5688 struct ipr_ioa_cfg *ioa_cfg;
5689 struct Scsi_Host *host;
5690 unsigned long ipr_regs_pci;
5691 void __iomem *ipr_regs;
5692 u32 rc = PCIBIOS_SUCCESSFUL;
5693
5694 ENTER;
5695
5696 if ((rc = pci_enable_device(pdev))) {
5697 dev_err(&pdev->dev, "Cannot enable adapter\n");
5698 goto out;
5699 }
5700
5701 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
5702
5703 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
5704
5705 if (!host) {
5706 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
5707 rc = -ENOMEM;
5708 goto out_disable;
5709 }
5710
5711 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
5712 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
5713
5714 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
5715
5716 if (!ioa_cfg->chip_cfg) {
5717 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
5718 dev_id->vendor, dev_id->device);
5719 goto out_scsi_host_put;
5720 }
5721
5722 ipr_regs_pci = pci_resource_start(pdev, 0);
5723
5724 rc = pci_request_regions(pdev, IPR_NAME);
5725 if (rc < 0) {
5726 dev_err(&pdev->dev,
5727 "Couldn't register memory range of registers\n");
5728 goto out_scsi_host_put;
5729 }
5730
5731 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
5732
5733 if (!ipr_regs) {
5734 dev_err(&pdev->dev,
5735 "Couldn't map memory range of registers\n");
5736 rc = -ENOMEM;
5737 goto out_release_regions;
5738 }
5739
5740 ioa_cfg->hdw_dma_regs = ipr_regs;
5741 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
5742 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
5743
5744 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
5745
5746 pci_set_master(pdev);
5747
5748 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5749 if (rc < 0) {
5750 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
5751 goto cleanup_nomem;
5752 }
5753
5754 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
5755 ioa_cfg->chip_cfg->cache_line_size);
5756
5757 if (rc != PCIBIOS_SUCCESSFUL) {
5758 dev_err(&pdev->dev, "Write of cache line size failed\n");
5759 rc = -EIO;
5760 goto cleanup_nomem;
5761 }
5762
5763 /* Save away PCI config space for use following IOA reset */
5764 rc = pci_save_state(pdev);
5765
5766 if (rc != PCIBIOS_SUCCESSFUL) {
5767 dev_err(&pdev->dev, "Failed to save PCI config space\n");
5768 rc = -EIO;
5769 goto cleanup_nomem;
5770 }
5771
5772 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
5773 goto cleanup_nomem;
5774
5775 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
5776 goto cleanup_nomem;
5777
5778 rc = ipr_alloc_mem(ioa_cfg);
5779 if (rc < 0) {
5780 dev_err(&pdev->dev,
5781 "Couldn't allocate enough memory for device driver!\n");
5782 goto cleanup_nomem;
5783 }
5784
5785 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
5786 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
5787
5788 if (rc) {
5789 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
5790 pdev->irq, rc);
5791 goto cleanup_nolog;
5792 }
5793
5794 spin_lock(&ipr_driver_lock);
5795 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
5796 spin_unlock(&ipr_driver_lock);
5797
5798 LEAVE;
5799out:
5800 return rc;
5801
5802cleanup_nolog:
5803 ipr_free_mem(ioa_cfg);
5804cleanup_nomem:
5805 iounmap(ipr_regs);
5806out_release_regions:
5807 pci_release_regions(pdev);
5808out_scsi_host_put:
5809 scsi_host_put(host);
5810out_disable:
5811 pci_disable_device(pdev);
5812 goto out;
5813}
5814
5815/**
5816 * ipr_scan_vsets - Scans for VSET devices
5817 * @ioa_cfg: ioa config struct
5818 *
5819 * Description: Since the VSET resources do not follow SAM in that we can have
5820 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
5821 *
5822 * Return value:
5823 * none
5824 **/
5825static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
5826{
5827 int target, lun;
5828
5829 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
5830 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
5831 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
5832}
5833
5834/**
5835 * ipr_initiate_ioa_bringdown - Bring down an adapter
5836 * @ioa_cfg: ioa config struct
5837 * @shutdown_type: shutdown type
5838 *
5839 * Description: This function will initiate bringing down the adapter.
5840 * This consists of issuing an IOA shutdown to the adapter
5841 * to flush the cache, and running BIST.
5842 * If the caller needs to wait on the completion of the reset,
5843 * the caller must sleep on the reset_wait_q.
5844 *
5845 * Return value:
5846 * none
5847 **/
5848static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
5849 enum ipr_shutdown_type shutdown_type)
5850{
5851 ENTER;
5852 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
5853 ioa_cfg->sdt_state = ABORT_DUMP;
5854 ioa_cfg->reset_retries = 0;
5855 ioa_cfg->in_ioa_bringdown = 1;
5856 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
5857 LEAVE;
5858}
5859
5860/**
5861 * __ipr_remove - Remove a single adapter
5862 * @pdev: pci device struct
5863 *
5864 * Adapter hot plug remove entry point.
5865 *
5866 * Return value:
5867 * none
5868 **/
5869static void __ipr_remove(struct pci_dev *pdev)
5870{
5871 unsigned long host_lock_flags = 0;
5872 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5873 ENTER;
5874
5875 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5876 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
5877
5878 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5879 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5cbf5eae 5880 flush_scheduled_work();
1da177e4
LT		 5881 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5882
5883 spin_lock(&ipr_driver_lock);
5884 list_del(&ioa_cfg->queue);
5885 spin_unlock(&ipr_driver_lock);
5886
5887 if (ioa_cfg->sdt_state == ABORT_DUMP)
5888 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
5889 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5890
5891 ipr_free_all_resources(ioa_cfg);
5892
5893 LEAVE;
5894}
5895
5896/**
5897 * ipr_remove - IOA hot plug remove entry point
5898 * @pdev: pci device struct
5899 *
5900 * Adapter hot plug remove entry point.
5901 *
5902 * Return value:
5903 * none
5904 **/
5905static void ipr_remove(struct pci_dev *pdev)
5906{
5907 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5908
5909 ENTER;
5910
1da177e4
LT		 5911 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5912 &ipr_trace_attr);
5913 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5914 &ipr_dump_attr);
5915 scsi_remove_host(ioa_cfg->host);
5916
5917 __ipr_remove(pdev);
5918
5919 LEAVE;
5920}
5921
5922/**
5923 * ipr_probe - Adapter hot plug add entry point
5924 *
5925 * Return value:
5926 * 0 on success / non-zero on failure
5927 **/
5928static int __devinit ipr_probe(struct pci_dev *pdev,
5929 const struct pci_device_id *dev_id)
5930{
5931 struct ipr_ioa_cfg *ioa_cfg;
5932 int rc;
5933
5934 rc = ipr_probe_ioa(pdev, dev_id);
5935
5936 if (rc)
5937 return rc;
5938
5939 ioa_cfg = pci_get_drvdata(pdev);
5940 rc = ipr_probe_ioa_part2(ioa_cfg);
5941
5942 if (rc) {
5943 __ipr_remove(pdev);
5944 return rc;
5945 }
5946
5947 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
5948
5949 if (rc) {
5950 __ipr_remove(pdev);
5951 return rc;
5952 }
5953
5954 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5955 &ipr_trace_attr);
5956
5957 if (rc) {
5958 scsi_remove_host(ioa_cfg->host);
5959 __ipr_remove(pdev);
5960 return rc;
5961 }
5962
5963 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5964 &ipr_dump_attr);
5965
5966 if (rc) {
5967 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5968 &ipr_trace_attr);
5969 scsi_remove_host(ioa_cfg->host);
5970 __ipr_remove(pdev);
5971 return rc;
5972 }
5973
5974 scsi_scan_host(ioa_cfg->host);
5975 ipr_scan_vsets(ioa_cfg);
5976 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
5977 ioa_cfg->allow_ml_add_del = 1;
11cd8f12 5978 ioa_cfg->host->max_channel = IPR_VSET_BUS;
1da177e4
LT		 5979 schedule_work(&ioa_cfg->work_q);
5980 return 0;
5981}
5982
5983/**
5984 * ipr_shutdown - Shutdown handler.
d18c3db5 5985 * @pdev: pci device struct
1da177e4
LT		 5986 *
5987 * This function is invoked upon system shutdown/reboot. It will issue
5988 * an adapter shutdown to the adapter to flush the write cache.
5989 *
5990 * Return value:
5991 * none
5992 **/
d18c3db5 5993static void ipr_shutdown(struct pci_dev *pdev)
1da177e4 5994{
d18c3db5 5995 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
1da177e4
LT		 5996 unsigned long lock_flags = 0;
5997
5998 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5999 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6000 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6001 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6002}
6003
6004static struct pci_device_id ipr_pci_table[] __devinitdata = {
6005 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6006 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6007 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6008 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6009 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6010 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6011 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6012 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6013 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6014 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6015 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6016 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6017 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6018 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6019 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6020 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6021 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6022 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6023 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6024 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6025 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6026 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6027 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6028 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6029 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6030 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6031 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6032 { }
6033};
6034MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6035
6036static struct pci_driver ipr_driver = {
6037 .name = IPR_NAME,
6038 .id_table = ipr_pci_table,
6039 .probe = ipr_probe,
6040 .remove = ipr_remove,
d18c3db5 6041 .shutdown = ipr_shutdown,
1da177e4
LT		 6042};
6043
6044/**
6045 * ipr_init - Module entry point
6046 *
6047 * Return value:
6048 * 0 on success / negative value on failure
6049 **/
6050static int __init ipr_init(void)
6051{
6052 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6053 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6054
6055 return pci_module_init(&ipr_driver);
6056}
6057
6058/**
6059 * ipr_exit - Module unload
6060 *
6061 * Module unload entry point.
6062 *
6063 * Return value:
6064 * none
6065 **/
6066static void __exit ipr_exit(void)
6067{
6068 pci_unregister_driver(&ipr_driver);
6069}
6070
6071module_init(ipr_init);
6072module_exit(ipr_exit);
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