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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24/*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57#include <linux/config.h>
58#include <linux/fs.h>
59#include <linux/init.h>
60#include <linux/types.h>
61#include <linux/errno.h>
62#include <linux/kernel.h>
63#include <linux/ioport.h>
64#include <linux/delay.h>
65#include <linux/pci.h>
66#include <linux/wait.h>
67#include <linux/spinlock.h>
68#include <linux/sched.h>
69#include <linux/interrupt.h>
70#include <linux/blkdev.h>
71#include <linux/firmware.h>
72#include <linux/module.h>
73#include <linux/moduleparam.h>
74#include <asm/io.h>
75#include <asm/irq.h>
76#include <asm/processor.h>
77#include <scsi/scsi.h>
78#include <scsi/scsi_host.h>
79#include <scsi/scsi_tcq.h>
80#include <scsi/scsi_eh.h>
81#include <scsi/scsi_cmnd.h>
82#include <scsi/scsi_request.h>
83#include "ipr.h"
84
85/*
86 * Global Data
87 */
88static struct list_head ipr_ioa_head = LIST_HEAD_INIT(ipr_ioa_head);
89static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
90static unsigned int ipr_max_speed = 1;
91static int ipr_testmode = 0;
92static unsigned int ipr_fastfail = 0;
93static unsigned int ipr_transop_timeout = IPR_OPERATIONAL_TIMEOUT;
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.
892 * @vpids: vendor/product id struct
893 * @serial_num: serial number string
894 *
895 * Return value:
896 * none
897 **/
898static void ipr_log_vpd(struct ipr_std_inq_vpids *vpids, u8 *serial_num)
899{
900 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
901 + IPR_SERIAL_NUM_LEN];
902
903 memcpy(buffer, vpids->vendor_id, IPR_VENDOR_ID_LEN);
904 memcpy(buffer + IPR_VENDOR_ID_LEN, vpids->product_id,
905 IPR_PROD_ID_LEN);
906 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
907 ipr_err("Vendor/Product ID: %s\n", buffer);
908
909 memcpy(buffer, serial_num, IPR_SERIAL_NUM_LEN);
910 buffer[IPR_SERIAL_NUM_LEN] = '\0';
911 ipr_err(" Serial Number: %s\n", buffer);
912}
913
914/**
915 * ipr_log_cache_error - Log a cache error.
916 * @ioa_cfg: ioa config struct
917 * @hostrcb: hostrcb struct
918 *
919 * Return value:
920 * none
921 **/
922static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
923 struct ipr_hostrcb *hostrcb)
924{
925 struct ipr_hostrcb_type_02_error *error =
926 &hostrcb->hcam.u.error.u.type_02_error;
927
928 ipr_err("-----Current Configuration-----\n");
929 ipr_err("Cache Directory Card Information:\n");
930 ipr_log_vpd(&error->ioa_vpids, error->ioa_sn);
931 ipr_err("Adapter Card Information:\n");
932 ipr_log_vpd(&error->cfc_vpids, error->cfc_sn);
933
934 ipr_err("-----Expected Configuration-----\n");
935 ipr_err("Cache Directory Card Information:\n");
936 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpids,
937 error->ioa_last_attached_to_cfc_sn);
938 ipr_err("Adapter Card Information:\n");
939 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpids,
940 error->cfc_last_attached_to_ioa_sn);
941
942 ipr_err("Additional IOA Data: %08X %08X %08X\n",
943 be32_to_cpu(error->ioa_data[0]),
944 be32_to_cpu(error->ioa_data[1]),
945 be32_to_cpu(error->ioa_data[2]));
946}
947
948/**
949 * ipr_log_config_error - Log a configuration error.
950 * @ioa_cfg: ioa config struct
951 * @hostrcb: hostrcb struct
952 *
953 * Return value:
954 * none
955 **/
956static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
957 struct ipr_hostrcb *hostrcb)
958{
959 int errors_logged, i;
960 struct ipr_hostrcb_device_data_entry *dev_entry;
961 struct ipr_hostrcb_type_03_error *error;
962
963 error = &hostrcb->hcam.u.error.u.type_03_error;
964 errors_logged = be32_to_cpu(error->errors_logged);
965
966 ipr_err("Device Errors Detected/Logged: %d/%d\n",
967 be32_to_cpu(error->errors_detected), errors_logged);
968
969 dev_entry = error->dev_entry;
970
971 for (i = 0; i < errors_logged; i++, dev_entry++) {
972 ipr_err_separator;
973
974 if (dev_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
975 ipr_err("Device %d: missing\n", i + 1);
976 } else {
977 ipr_err("Device %d: %d:%d:%d:%d\n", i + 1,
978 ioa_cfg->host->host_no, dev_entry->dev_res_addr.bus,
979 dev_entry->dev_res_addr.target, dev_entry->dev_res_addr.lun);
980 }
981 ipr_log_vpd(&dev_entry->dev_vpids, dev_entry->dev_sn);
982
983 ipr_err("-----New Device Information-----\n");
984 ipr_log_vpd(&dev_entry->new_dev_vpids, dev_entry->new_dev_sn);
985
986 ipr_err("Cache Directory Card Information:\n");
987 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpids,
988 dev_entry->ioa_last_with_dev_sn);
989
990 ipr_err("Adapter Card Information:\n");
991 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpids,
992 dev_entry->cfc_last_with_dev_sn);
993
994 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
995 be32_to_cpu(dev_entry->ioa_data[0]),
996 be32_to_cpu(dev_entry->ioa_data[1]),
997 be32_to_cpu(dev_entry->ioa_data[2]),
998 be32_to_cpu(dev_entry->ioa_data[3]),
999 be32_to_cpu(dev_entry->ioa_data[4]));
1000 }
1001}
1002
1003/**
1004 * ipr_log_array_error - Log an array configuration error.
1005 * @ioa_cfg: ioa config struct
1006 * @hostrcb: hostrcb struct
1007 *
1008 * Return value:
1009 * none
1010 **/
1011static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1012 struct ipr_hostrcb *hostrcb)
1013{
1014 int i;
1015 struct ipr_hostrcb_type_04_error *error;
1016 struct ipr_hostrcb_array_data_entry *array_entry;
1017 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1018
1019 error = &hostrcb->hcam.u.error.u.type_04_error;
1020
1021 ipr_err_separator;
1022
1023 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1024 error->protection_level,
1025 ioa_cfg->host->host_no,
1026 error->last_func_vset_res_addr.bus,
1027 error->last_func_vset_res_addr.target,
1028 error->last_func_vset_res_addr.lun);
1029
1030 ipr_err_separator;
1031
1032 array_entry = error->array_member;
1033
1034 for (i = 0; i < 18; i++) {
1035 if (!memcmp(array_entry->serial_num, zero_sn, IPR_SERIAL_NUM_LEN))
1036 continue;
1037
1038 if (be32_to_cpu(error->exposed_mode_adn) == i) {
1039 ipr_err("Exposed Array Member %d:\n", i);
1040 } else {
1041 ipr_err("Array Member %d:\n", i);
1042 }
1043
1044 ipr_log_vpd(&array_entry->vpids, array_entry->serial_num);
1045
1046 if (array_entry->dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
1047 ipr_err("Current Location: unknown\n");
1048 } else {
1049 ipr_err("Current Location: %d:%d:%d:%d\n",
1050 ioa_cfg->host->host_no,
1051 array_entry->dev_res_addr.bus,
1052 array_entry->dev_res_addr.target,
1053 array_entry->dev_res_addr.lun);
1054 }
1055
brking@us.ibm.com 1b69f642005-05-02 19:50:59 -05001056 if (array_entry->expected_dev_res_addr.bus >= IPR_MAX_NUM_BUSES) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 ipr_err("Expected Location: unknown\n");
1058 } else {
1059 ipr_err("Expected Location: %d:%d:%d:%d\n",
1060 ioa_cfg->host->host_no,
1061 array_entry->expected_dev_res_addr.bus,
1062 array_entry->expected_dev_res_addr.target,
1063 array_entry->expected_dev_res_addr.lun);
1064 }
1065
1066 ipr_err_separator;
1067
1068 if (i == 9)
1069 array_entry = error->array_member2;
1070 else
1071 array_entry++;
1072 }
1073}
1074
1075/**
1076 * ipr_log_generic_error - Log an adapter error.
1077 * @ioa_cfg: ioa config struct
1078 * @hostrcb: hostrcb struct
1079 *
1080 * Return value:
1081 * none
1082 **/
1083static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
1084 struct ipr_hostrcb *hostrcb)
1085{
1086 int i;
1087 int ioa_data_len = be32_to_cpu(hostrcb->hcam.length);
1088
1089 if (ioa_data_len == 0)
1090 return;
1091
1092 ipr_err("IOA Error Data:\n");
1093 ipr_err("Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F\n");
1094
1095 for (i = 0; i < ioa_data_len / 4; i += 4) {
1096 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1097 be32_to_cpu(hostrcb->hcam.u.raw.data[i]),
1098 be32_to_cpu(hostrcb->hcam.u.raw.data[i+1]),
1099 be32_to_cpu(hostrcb->hcam.u.raw.data[i+2]),
1100 be32_to_cpu(hostrcb->hcam.u.raw.data[i+3]));
1101 }
1102}
1103
1104/**
1105 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
1106 * @ioasc: IOASC
1107 *
1108 * This function will return the index of into the ipr_error_table
1109 * for the specified IOASC. If the IOASC is not in the table,
1110 * 0 will be returned, which points to the entry used for unknown errors.
1111 *
1112 * Return value:
1113 * index into the ipr_error_table
1114 **/
1115static u32 ipr_get_error(u32 ioasc)
1116{
1117 int i;
1118
1119 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
1120 if (ipr_error_table[i].ioasc == ioasc)
1121 return i;
1122
1123 return 0;
1124}
1125
1126/**
1127 * ipr_handle_log_data - Log an adapter error.
1128 * @ioa_cfg: ioa config struct
1129 * @hostrcb: hostrcb struct
1130 *
1131 * This function logs an adapter error to the system.
1132 *
1133 * Return value:
1134 * none
1135 **/
1136static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
1137 struct ipr_hostrcb *hostrcb)
1138{
1139 u32 ioasc;
1140 int error_index;
1141
1142 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
1143 return;
1144
1145 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
1146 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
1147
1148 ioasc = be32_to_cpu(hostrcb->hcam.u.error.failing_dev_ioasc);
1149
1150 if (ioasc == IPR_IOASC_BUS_WAS_RESET ||
1151 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER) {
1152 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
1153 scsi_report_bus_reset(ioa_cfg->host,
1154 hostrcb->hcam.u.error.failing_dev_res_addr.bus);
1155 }
1156
1157 error_index = ipr_get_error(ioasc);
1158
1159 if (!ipr_error_table[error_index].log_hcam)
1160 return;
1161
1162 if (ipr_is_device(&hostrcb->hcam.u.error.failing_dev_res_addr)) {
1163 ipr_res_err(ioa_cfg, hostrcb->hcam.u.error.failing_dev_res_addr,
1164 "%s\n", ipr_error_table[error_index].error);
1165 } else {
1166 dev_err(&ioa_cfg->pdev->dev, "%s\n",
1167 ipr_error_table[error_index].error);
1168 }
1169
1170 /* Set indication we have logged an error */
1171 ioa_cfg->errors_logged++;
1172
1173 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
1174 return;
1175
1176 switch (hostrcb->hcam.overlay_id) {
1177 case IPR_HOST_RCB_OVERLAY_ID_1:
1178 ipr_log_generic_error(ioa_cfg, hostrcb);
1179 break;
1180 case IPR_HOST_RCB_OVERLAY_ID_2:
1181 ipr_log_cache_error(ioa_cfg, hostrcb);
1182 break;
1183 case IPR_HOST_RCB_OVERLAY_ID_3:
1184 ipr_log_config_error(ioa_cfg, hostrcb);
1185 break;
1186 case IPR_HOST_RCB_OVERLAY_ID_4:
1187 case IPR_HOST_RCB_OVERLAY_ID_6:
1188 ipr_log_array_error(ioa_cfg, hostrcb);
1189 break;
1190 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
1191 ipr_log_generic_error(ioa_cfg, hostrcb);
1192 break;
1193 default:
1194 dev_err(&ioa_cfg->pdev->dev,
1195 "Unknown error received. Overlay ID: %d\n",
1196 hostrcb->hcam.overlay_id);
1197 break;
1198 }
1199}
1200
1201/**
1202 * ipr_process_error - Op done function for an adapter error log.
1203 * @ipr_cmd: ipr command struct
1204 *
1205 * This function is the op done function for an error log host
1206 * controlled async from the adapter. It will log the error and
1207 * send the HCAM back to the adapter.
1208 *
1209 * Return value:
1210 * none
1211 **/
1212static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
1213{
1214 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1215 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1216 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
1217
1218 list_del(&hostrcb->queue);
1219 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
1220
1221 if (!ioasc) {
1222 ipr_handle_log_data(ioa_cfg, hostrcb);
1223 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
1224 dev_err(&ioa_cfg->pdev->dev,
1225 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1226 }
1227
1228 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
1229}
1230
1231/**
1232 * ipr_timeout - An internally generated op has timed out.
1233 * @ipr_cmd: ipr command struct
1234 *
1235 * This function blocks host requests and initiates an
1236 * adapter reset.
1237 *
1238 * Return value:
1239 * none
1240 **/
1241static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
1242{
1243 unsigned long lock_flags = 0;
1244 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1245
1246 ENTER;
1247 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1248
1249 ioa_cfg->errors_logged++;
1250 dev_err(&ioa_cfg->pdev->dev,
1251 "Adapter being reset due to command timeout.\n");
1252
1253 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1254 ioa_cfg->sdt_state = GET_DUMP;
1255
1256 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
1257 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1258
1259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1260 LEAVE;
1261}
1262
1263/**
1264 * ipr_oper_timeout - Adapter timed out transitioning to operational
1265 * @ipr_cmd: ipr command struct
1266 *
1267 * This function blocks host requests and initiates an
1268 * adapter reset.
1269 *
1270 * Return value:
1271 * none
1272 **/
1273static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
1274{
1275 unsigned long lock_flags = 0;
1276 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1277
1278 ENTER;
1279 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1280
1281 ioa_cfg->errors_logged++;
1282 dev_err(&ioa_cfg->pdev->dev,
1283 "Adapter timed out transitioning to operational.\n");
1284
1285 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
1286 ioa_cfg->sdt_state = GET_DUMP;
1287
1288 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
1289 if (ipr_fastfail)
1290 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
1291 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1292 }
1293
1294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1295 LEAVE;
1296}
1297
1298/**
1299 * ipr_reset_reload - Reset/Reload the IOA
1300 * @ioa_cfg: ioa config struct
1301 * @shutdown_type: shutdown type
1302 *
1303 * This function resets the adapter and re-initializes it.
1304 * This function assumes that all new host commands have been stopped.
1305 * Return value:
1306 * SUCCESS / FAILED
1307 **/
1308static int ipr_reset_reload(struct ipr_ioa_cfg *ioa_cfg,
1309 enum ipr_shutdown_type shutdown_type)
1310{
1311 if (!ioa_cfg->in_reset_reload)
1312 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
1313
1314 spin_unlock_irq(ioa_cfg->host->host_lock);
1315 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
1316 spin_lock_irq(ioa_cfg->host->host_lock);
1317
1318 /* If we got hit with a host reset while we were already resetting
1319 the adapter for some reason, and the reset failed. */
1320 if (ioa_cfg->ioa_is_dead) {
1321 ipr_trace;
1322 return FAILED;
1323 }
1324
1325 return SUCCESS;
1326}
1327
1328/**
1329 * ipr_find_ses_entry - Find matching SES in SES table
1330 * @res: resource entry struct of SES
1331 *
1332 * Return value:
1333 * pointer to SES table entry / NULL on failure
1334 **/
1335static const struct ipr_ses_table_entry *
1336ipr_find_ses_entry(struct ipr_resource_entry *res)
1337{
1338 int i, j, matches;
1339 const struct ipr_ses_table_entry *ste = ipr_ses_table;
1340
1341 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
1342 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
1343 if (ste->compare_product_id_byte[j] == 'X') {
1344 if (res->cfgte.std_inq_data.vpids.product_id[j] == ste->product_id[j])
1345 matches++;
1346 else
1347 break;
1348 } else
1349 matches++;
1350 }
1351
1352 if (matches == IPR_PROD_ID_LEN)
1353 return ste;
1354 }
1355
1356 return NULL;
1357}
1358
1359/**
1360 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
1361 * @ioa_cfg: ioa config struct
1362 * @bus: SCSI bus
1363 * @bus_width: bus width
1364 *
1365 * Return value:
1366 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
1367 * For a 2-byte wide SCSI bus, the maximum transfer speed is
1368 * twice the maximum transfer rate (e.g. for a wide enabled bus,
1369 * max 160MHz = max 320MB/sec).
1370 **/
1371static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
1372{
1373 struct ipr_resource_entry *res;
1374 const struct ipr_ses_table_entry *ste;
1375 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
1376
1377 /* Loop through each config table entry in the config table buffer */
1378 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1379 if (!(IPR_IS_SES_DEVICE(res->cfgte.std_inq_data)))
1380 continue;
1381
1382 if (bus != res->cfgte.res_addr.bus)
1383 continue;
1384
1385 if (!(ste = ipr_find_ses_entry(res)))
1386 continue;
1387
1388 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
1389 }
1390
1391 return max_xfer_rate;
1392}
1393
1394/**
1395 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
1396 * @ioa_cfg: ioa config struct
1397 * @max_delay: max delay in micro-seconds to wait
1398 *
1399 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
1400 *
1401 * Return value:
1402 * 0 on success / other on failure
1403 **/
1404static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
1405{
1406 volatile u32 pcii_reg;
1407 int delay = 1;
1408
1409 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
1410 while (delay < max_delay) {
1411 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
1412
1413 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
1414 return 0;
1415
1416 /* udelay cannot be used if delay is more than a few milliseconds */
1417 if ((delay / 1000) > MAX_UDELAY_MS)
1418 mdelay(delay / 1000);
1419 else
1420 udelay(delay);
1421
1422 delay += delay;
1423 }
1424 return -EIO;
1425}
1426
1427/**
1428 * ipr_get_ldump_data_section - Dump IOA memory
1429 * @ioa_cfg: ioa config struct
1430 * @start_addr: adapter address to dump
1431 * @dest: destination kernel buffer
1432 * @length_in_words: length to dump in 4 byte words
1433 *
1434 * Return value:
1435 * 0 on success / -EIO on failure
1436 **/
1437static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
1438 u32 start_addr,
1439 __be32 *dest, u32 length_in_words)
1440{
1441 volatile u32 temp_pcii_reg;
1442 int i, delay = 0;
1443
1444 /* Write IOA interrupt reg starting LDUMP state */
1445 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
1446 ioa_cfg->regs.set_uproc_interrupt_reg);
1447
1448 /* Wait for IO debug acknowledge */
1449 if (ipr_wait_iodbg_ack(ioa_cfg,
1450 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
1451 dev_err(&ioa_cfg->pdev->dev,
1452 "IOA dump long data transfer timeout\n");
1453 return -EIO;
1454 }
1455
1456 /* Signal LDUMP interlocked - clear IO debug ack */
1457 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1458 ioa_cfg->regs.clr_interrupt_reg);
1459
1460 /* Write Mailbox with starting address */
1461 writel(start_addr, ioa_cfg->ioa_mailbox);
1462
1463 /* Signal address valid - clear IOA Reset alert */
1464 writel(IPR_UPROCI_RESET_ALERT,
1465 ioa_cfg->regs.clr_uproc_interrupt_reg);
1466
1467 for (i = 0; i < length_in_words; i++) {
1468 /* Wait for IO debug acknowledge */
1469 if (ipr_wait_iodbg_ack(ioa_cfg,
1470 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
1471 dev_err(&ioa_cfg->pdev->dev,
1472 "IOA dump short data transfer timeout\n");
1473 return -EIO;
1474 }
1475
1476 /* Read data from mailbox and increment destination pointer */
1477 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
1478 dest++;
1479
1480 /* For all but the last word of data, signal data received */
1481 if (i < (length_in_words - 1)) {
1482 /* Signal dump data received - Clear IO debug Ack */
1483 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1484 ioa_cfg->regs.clr_interrupt_reg);
1485 }
1486 }
1487
1488 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
1489 writel(IPR_UPROCI_RESET_ALERT,
1490 ioa_cfg->regs.set_uproc_interrupt_reg);
1491
1492 writel(IPR_UPROCI_IO_DEBUG_ALERT,
1493 ioa_cfg->regs.clr_uproc_interrupt_reg);
1494
1495 /* Signal dump data received - Clear IO debug Ack */
1496 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
1497 ioa_cfg->regs.clr_interrupt_reg);
1498
1499 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
1500 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
1501 temp_pcii_reg =
1502 readl(ioa_cfg->regs.sense_uproc_interrupt_reg);
1503
1504 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
1505 return 0;
1506
1507 udelay(10);
1508 delay += 10;
1509 }
1510
1511 return 0;
1512}
1513
1514#ifdef CONFIG_SCSI_IPR_DUMP
1515/**
1516 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
1517 * @ioa_cfg: ioa config struct
1518 * @pci_address: adapter address
1519 * @length: length of data to copy
1520 *
1521 * Copy data from PCI adapter to kernel buffer.
1522 * Note: length MUST be a 4 byte multiple
1523 * Return value:
1524 * 0 on success / other on failure
1525 **/
1526static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
1527 unsigned long pci_address, u32 length)
1528{
1529 int bytes_copied = 0;
1530 int cur_len, rc, rem_len, rem_page_len;
1531 __be32 *page;
1532 unsigned long lock_flags = 0;
1533 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
1534
1535 while (bytes_copied < length &&
1536 (ioa_dump->hdr.len + bytes_copied) < IPR_MAX_IOA_DUMP_SIZE) {
1537 if (ioa_dump->page_offset >= PAGE_SIZE ||
1538 ioa_dump->page_offset == 0) {
1539 page = (__be32 *)__get_free_page(GFP_ATOMIC);
1540
1541 if (!page) {
1542 ipr_trace;
1543 return bytes_copied;
1544 }
1545
1546 ioa_dump->page_offset = 0;
1547 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
1548 ioa_dump->next_page_index++;
1549 } else
1550 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
1551
1552 rem_len = length - bytes_copied;
1553 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
1554 cur_len = min(rem_len, rem_page_len);
1555
1556 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1557 if (ioa_cfg->sdt_state == ABORT_DUMP) {
1558 rc = -EIO;
1559 } else {
1560 rc = ipr_get_ldump_data_section(ioa_cfg,
1561 pci_address + bytes_copied,
1562 &page[ioa_dump->page_offset / 4],
1563 (cur_len / sizeof(u32)));
1564 }
1565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1566
1567 if (!rc) {
1568 ioa_dump->page_offset += cur_len;
1569 bytes_copied += cur_len;
1570 } else {
1571 ipr_trace;
1572 break;
1573 }
1574 schedule();
1575 }
1576
1577 return bytes_copied;
1578}
1579
1580/**
1581 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
1582 * @hdr: dump entry header struct
1583 *
1584 * Return value:
1585 * nothing
1586 **/
1587static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
1588{
1589 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
1590 hdr->num_elems = 1;
1591 hdr->offset = sizeof(*hdr);
1592 hdr->status = IPR_DUMP_STATUS_SUCCESS;
1593}
1594
1595/**
1596 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
1597 * @ioa_cfg: ioa config struct
1598 * @driver_dump: driver dump struct
1599 *
1600 * Return value:
1601 * nothing
1602 **/
1603static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
1604 struct ipr_driver_dump *driver_dump)
1605{
1606 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1607
1608 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
1609 driver_dump->ioa_type_entry.hdr.len =
1610 sizeof(struct ipr_dump_ioa_type_entry) -
1611 sizeof(struct ipr_dump_entry_header);
1612 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1613 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
1614 driver_dump->ioa_type_entry.type = ioa_cfg->type;
1615 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
1616 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
1617 ucode_vpd->minor_release[1];
1618 driver_dump->hdr.num_entries++;
1619}
1620
1621/**
1622 * ipr_dump_version_data - Fill in the driver version in the dump.
1623 * @ioa_cfg: ioa config struct
1624 * @driver_dump: driver dump struct
1625 *
1626 * Return value:
1627 * nothing
1628 **/
1629static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
1630 struct ipr_driver_dump *driver_dump)
1631{
1632 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
1633 driver_dump->version_entry.hdr.len =
1634 sizeof(struct ipr_dump_version_entry) -
1635 sizeof(struct ipr_dump_entry_header);
1636 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1637 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
1638 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
1639 driver_dump->hdr.num_entries++;
1640}
1641
1642/**
1643 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
1644 * @ioa_cfg: ioa config struct
1645 * @driver_dump: driver dump struct
1646 *
1647 * Return value:
1648 * nothing
1649 **/
1650static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
1651 struct ipr_driver_dump *driver_dump)
1652{
1653 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
1654 driver_dump->trace_entry.hdr.len =
1655 sizeof(struct ipr_dump_trace_entry) -
1656 sizeof(struct ipr_dump_entry_header);
1657 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1658 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
1659 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
1660 driver_dump->hdr.num_entries++;
1661}
1662
1663/**
1664 * ipr_dump_location_data - Fill in the IOA location in the dump.
1665 * @ioa_cfg: ioa config struct
1666 * @driver_dump: driver dump struct
1667 *
1668 * Return value:
1669 * nothing
1670 **/
1671static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
1672 struct ipr_driver_dump *driver_dump)
1673{
1674 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
1675 driver_dump->location_entry.hdr.len =
1676 sizeof(struct ipr_dump_location_entry) -
1677 sizeof(struct ipr_dump_entry_header);
1678 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
1679 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
1680 strcpy(driver_dump->location_entry.location, ioa_cfg->pdev->dev.bus_id);
1681 driver_dump->hdr.num_entries++;
1682}
1683
1684/**
1685 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
1686 * @ioa_cfg: ioa config struct
1687 * @dump: dump struct
1688 *
1689 * Return value:
1690 * nothing
1691 **/
1692static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
1693{
1694 unsigned long start_addr, sdt_word;
1695 unsigned long lock_flags = 0;
1696 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
1697 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
1698 u32 num_entries, start_off, end_off;
1699 u32 bytes_to_copy, bytes_copied, rc;
1700 struct ipr_sdt *sdt;
1701 int i;
1702
1703 ENTER;
1704
1705 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1706
1707 if (ioa_cfg->sdt_state != GET_DUMP) {
1708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1709 return;
1710 }
1711
1712 start_addr = readl(ioa_cfg->ioa_mailbox);
1713
1714 if (!ipr_sdt_is_fmt2(start_addr)) {
1715 dev_err(&ioa_cfg->pdev->dev,
1716 "Invalid dump table format: %lx\n", start_addr);
1717 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1718 return;
1719 }
1720
1721 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
1722
1723 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
1724
1725 /* Initialize the overall dump header */
1726 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
1727 driver_dump->hdr.num_entries = 1;
1728 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
1729 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
1730 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
1731 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
1732
1733 ipr_dump_version_data(ioa_cfg, driver_dump);
1734 ipr_dump_location_data(ioa_cfg, driver_dump);
1735 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
1736 ipr_dump_trace_data(ioa_cfg, driver_dump);
1737
1738 /* Update dump_header */
1739 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
1740
1741 /* IOA Dump entry */
1742 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
1743 ioa_dump->format = IPR_SDT_FMT2;
1744 ioa_dump->hdr.len = 0;
1745 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
1746 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
1747
1748 /* First entries in sdt are actually a list of dump addresses and
1749 lengths to gather the real dump data. sdt represents the pointer
1750 to the ioa generated dump table. Dump data will be extracted based
1751 on entries in this table */
1752 sdt = &ioa_dump->sdt;
1753
1754 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
1755 sizeof(struct ipr_sdt) / sizeof(__be32));
1756
1757 /* Smart Dump table is ready to use and the first entry is valid */
1758 if (rc || (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE)) {
1759 dev_err(&ioa_cfg->pdev->dev,
1760 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
1761 rc, be32_to_cpu(sdt->hdr.state));
1762 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
1763 ioa_cfg->sdt_state = DUMP_OBTAINED;
1764 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1765 return;
1766 }
1767
1768 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
1769
1770 if (num_entries > IPR_NUM_SDT_ENTRIES)
1771 num_entries = IPR_NUM_SDT_ENTRIES;
1772
1773 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1774
1775 for (i = 0; i < num_entries; i++) {
1776 if (ioa_dump->hdr.len > IPR_MAX_IOA_DUMP_SIZE) {
1777 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1778 break;
1779 }
1780
1781 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
1782 sdt_word = be32_to_cpu(sdt->entry[i].bar_str_offset);
1783 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
1784 end_off = be32_to_cpu(sdt->entry[i].end_offset);
1785
1786 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word) {
1787 bytes_to_copy = end_off - start_off;
1788 if (bytes_to_copy > IPR_MAX_IOA_DUMP_SIZE) {
1789 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
1790 continue;
1791 }
1792
1793 /* Copy data from adapter to driver buffers */
1794 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
1795 bytes_to_copy);
1796
1797 ioa_dump->hdr.len += bytes_copied;
1798
1799 if (bytes_copied != bytes_to_copy) {
1800 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
1801 break;
1802 }
1803 }
1804 }
1805 }
1806
1807 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
1808
1809 /* Update dump_header */
1810 driver_dump->hdr.len += ioa_dump->hdr.len;
1811 wmb();
1812 ioa_cfg->sdt_state = DUMP_OBTAINED;
1813 LEAVE;
1814}
1815
1816#else
1817#define ipr_get_ioa_dump(ioa_cfg, dump) do { } while(0)
1818#endif
1819
1820/**
1821 * ipr_release_dump - Free adapter dump memory
1822 * @kref: kref struct
1823 *
1824 * Return value:
1825 * nothing
1826 **/
1827static void ipr_release_dump(struct kref *kref)
1828{
1829 struct ipr_dump *dump = container_of(kref,struct ipr_dump,kref);
1830 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
1831 unsigned long lock_flags = 0;
1832 int i;
1833
1834 ENTER;
1835 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1836 ioa_cfg->dump = NULL;
1837 ioa_cfg->sdt_state = INACTIVE;
1838 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1839
1840 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
1841 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
1842
1843 kfree(dump);
1844 LEAVE;
1845}
1846
1847/**
1848 * ipr_worker_thread - Worker thread
1849 * @data: ioa config struct
1850 *
1851 * Called at task level from a work thread. This function takes care
1852 * of adding and removing device from the mid-layer as configuration
1853 * changes are detected by the adapter.
1854 *
1855 * Return value:
1856 * nothing
1857 **/
1858static void ipr_worker_thread(void *data)
1859{
1860 unsigned long lock_flags;
1861 struct ipr_resource_entry *res;
1862 struct scsi_device *sdev;
1863 struct ipr_dump *dump;
1864 struct ipr_ioa_cfg *ioa_cfg = data;
1865 u8 bus, target, lun;
1866 int did_work;
1867
1868 ENTER;
1869 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1870
1871 if (ioa_cfg->sdt_state == GET_DUMP) {
1872 dump = ioa_cfg->dump;
1873 if (!dump) {
1874 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1875 return;
1876 }
1877 kref_get(&dump->kref);
1878 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1879 ipr_get_ioa_dump(ioa_cfg, dump);
1880 kref_put(&dump->kref, ipr_release_dump);
1881
1882 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1883 if (ioa_cfg->sdt_state == DUMP_OBTAINED)
1884 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
1885 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1886 return;
1887 }
1888
1889restart:
1890 do {
1891 did_work = 0;
1892 if (!ioa_cfg->allow_cmds || !ioa_cfg->allow_ml_add_del) {
1893 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1894 return;
1895 }
1896
1897 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1898 if (res->del_from_ml && res->sdev) {
1899 did_work = 1;
1900 sdev = res->sdev;
1901 if (!scsi_device_get(sdev)) {
1902 res->sdev = NULL;
1903 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1905 scsi_remove_device(sdev);
1906 scsi_device_put(sdev);
1907 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1908 }
1909 break;
1910 }
1911 }
1912 } while(did_work);
1913
1914 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1915 if (res->add_to_ml) {
1916 bus = res->cfgte.res_addr.bus;
1917 target = res->cfgte.res_addr.target;
1918 lun = res->cfgte.res_addr.lun;
1919 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1920 scsi_add_device(ioa_cfg->host, bus, target, lun);
1921 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1922 goto restart;
1923 }
1924 }
1925
1926 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1927 kobject_uevent(&ioa_cfg->host->shost_classdev.kobj, KOBJ_CHANGE, NULL);
1928 LEAVE;
1929}
1930
1931#ifdef CONFIG_SCSI_IPR_TRACE
1932/**
1933 * ipr_read_trace - Dump the adapter trace
1934 * @kobj: kobject struct
1935 * @buf: buffer
1936 * @off: offset
1937 * @count: buffer size
1938 *
1939 * Return value:
1940 * number of bytes printed to buffer
1941 **/
1942static ssize_t ipr_read_trace(struct kobject *kobj, char *buf,
1943 loff_t off, size_t count)
1944{
1945 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
1946 struct Scsi_Host *shost = class_to_shost(cdev);
1947 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1948 unsigned long lock_flags = 0;
1949 int size = IPR_TRACE_SIZE;
1950 char *src = (char *)ioa_cfg->trace;
1951
1952 if (off > size)
1953 return 0;
1954 if (off + count > size) {
1955 size -= off;
1956 count = size;
1957 }
1958
1959 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1960 memcpy(buf, &src[off], count);
1961 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1962 return count;
1963}
1964
1965static struct bin_attribute ipr_trace_attr = {
1966 .attr = {
1967 .name = "trace",
1968 .mode = S_IRUGO,
1969 },
1970 .size = 0,
1971 .read = ipr_read_trace,
1972};
1973#endif
1974
1975/**
1976 * ipr_show_fw_version - Show the firmware version
1977 * @class_dev: class device struct
1978 * @buf: buffer
1979 *
1980 * Return value:
1981 * number of bytes printed to buffer
1982 **/
1983static ssize_t ipr_show_fw_version(struct class_device *class_dev, char *buf)
1984{
1985 struct Scsi_Host *shost = class_to_shost(class_dev);
1986 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
1987 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
1988 unsigned long lock_flags = 0;
1989 int len;
1990
1991 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
1992 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
1993 ucode_vpd->major_release, ucode_vpd->card_type,
1994 ucode_vpd->minor_release[0],
1995 ucode_vpd->minor_release[1]);
1996 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
1997 return len;
1998}
1999
2000static struct class_device_attribute ipr_fw_version_attr = {
2001 .attr = {
2002 .name = "fw_version",
2003 .mode = S_IRUGO,
2004 },
2005 .show = ipr_show_fw_version,
2006};
2007
2008/**
2009 * ipr_show_log_level - Show the adapter's error logging level
2010 * @class_dev: class device struct
2011 * @buf: buffer
2012 *
2013 * Return value:
2014 * number of bytes printed to buffer
2015 **/
2016static ssize_t ipr_show_log_level(struct class_device *class_dev, char *buf)
2017{
2018 struct Scsi_Host *shost = class_to_shost(class_dev);
2019 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2020 unsigned long lock_flags = 0;
2021 int len;
2022
2023 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2024 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
2025 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2026 return len;
2027}
2028
2029/**
2030 * ipr_store_log_level - Change the adapter's error logging level
2031 * @class_dev: class device struct
2032 * @buf: buffer
2033 *
2034 * Return value:
2035 * number of bytes printed to buffer
2036 **/
2037static ssize_t ipr_store_log_level(struct class_device *class_dev,
2038 const char *buf, size_t count)
2039{
2040 struct Scsi_Host *shost = class_to_shost(class_dev);
2041 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2042 unsigned long lock_flags = 0;
2043
2044 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2045 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
2046 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2047 return strlen(buf);
2048}
2049
2050static struct class_device_attribute ipr_log_level_attr = {
2051 .attr = {
2052 .name = "log_level",
2053 .mode = S_IRUGO | S_IWUSR,
2054 },
2055 .show = ipr_show_log_level,
2056 .store = ipr_store_log_level
2057};
2058
2059/**
2060 * ipr_store_diagnostics - IOA Diagnostics interface
2061 * @class_dev: class_device struct
2062 * @buf: buffer
2063 * @count: buffer size
2064 *
2065 * This function will reset the adapter and wait a reasonable
2066 * amount of time for any errors that the adapter might log.
2067 *
2068 * Return value:
2069 * count on success / other on failure
2070 **/
2071static ssize_t ipr_store_diagnostics(struct class_device *class_dev,
2072 const char *buf, size_t count)
2073{
2074 struct Scsi_Host *shost = class_to_shost(class_dev);
2075 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2076 unsigned long lock_flags = 0;
2077 int rc = count;
2078
2079 if (!capable(CAP_SYS_ADMIN))
2080 return -EACCES;
2081
2082 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2083 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2084 ioa_cfg->errors_logged = 0;
2085 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2086
2087 if (ioa_cfg->in_reset_reload) {
2088 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2089 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2090
2091 /* Wait for a second for any errors to be logged */
2092 msleep(1000);
2093 } else {
2094 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2095 return -EIO;
2096 }
2097
2098 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2099 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
2100 rc = -EIO;
2101 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2102
2103 return rc;
2104}
2105
2106static struct class_device_attribute ipr_diagnostics_attr = {
2107 .attr = {
2108 .name = "run_diagnostics",
2109 .mode = S_IWUSR,
2110 },
2111 .store = ipr_store_diagnostics
2112};
2113
2114/**
2115 * ipr_store_reset_adapter - Reset the adapter
2116 * @class_dev: class_device struct
2117 * @buf: buffer
2118 * @count: buffer size
2119 *
2120 * This function will reset the adapter.
2121 *
2122 * Return value:
2123 * count on success / other on failure
2124 **/
2125static ssize_t ipr_store_reset_adapter(struct class_device *class_dev,
2126 const char *buf, size_t count)
2127{
2128 struct Scsi_Host *shost = class_to_shost(class_dev);
2129 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2130 unsigned long lock_flags;
2131 int result = count;
2132
2133 if (!capable(CAP_SYS_ADMIN))
2134 return -EACCES;
2135
2136 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2137 if (!ioa_cfg->in_reset_reload)
2138 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2139 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2140 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2141
2142 return result;
2143}
2144
2145static struct class_device_attribute ipr_ioa_reset_attr = {
2146 .attr = {
2147 .name = "reset_host",
2148 .mode = S_IWUSR,
2149 },
2150 .store = ipr_store_reset_adapter
2151};
2152
2153/**
2154 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
2155 * @buf_len: buffer length
2156 *
2157 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
2158 * list to use for microcode download
2159 *
2160 * Return value:
2161 * pointer to sglist / NULL on failure
2162 **/
2163static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
2164{
2165 int sg_size, order, bsize_elem, num_elem, i, j;
2166 struct ipr_sglist *sglist;
2167 struct scatterlist *scatterlist;
2168 struct page *page;
2169
2170 /* Get the minimum size per scatter/gather element */
2171 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
2172
2173 /* Get the actual size per element */
2174 order = get_order(sg_size);
2175
2176 /* Determine the actual number of bytes per element */
2177 bsize_elem = PAGE_SIZE * (1 << order);
2178
2179 /* Determine the actual number of sg entries needed */
2180 if (buf_len % bsize_elem)
2181 num_elem = (buf_len / bsize_elem) + 1;
2182 else
2183 num_elem = buf_len / bsize_elem;
2184
2185 /* Allocate a scatter/gather list for the DMA */
2186 sglist = kmalloc(sizeof(struct ipr_sglist) +
2187 (sizeof(struct scatterlist) * (num_elem - 1)),
2188 GFP_KERNEL);
2189
2190 if (sglist == NULL) {
2191 ipr_trace;
2192 return NULL;
2193 }
2194
2195 memset(sglist, 0, sizeof(struct ipr_sglist) +
2196 (sizeof(struct scatterlist) * (num_elem - 1)));
2197
2198 scatterlist = sglist->scatterlist;
2199
2200 sglist->order = order;
2201 sglist->num_sg = num_elem;
2202
2203 /* Allocate a bunch of sg elements */
2204 for (i = 0; i < num_elem; i++) {
2205 page = alloc_pages(GFP_KERNEL, order);
2206 if (!page) {
2207 ipr_trace;
2208
2209 /* Free up what we already allocated */
2210 for (j = i - 1; j >= 0; j--)
2211 __free_pages(scatterlist[j].page, order);
2212 kfree(sglist);
2213 return NULL;
2214 }
2215
2216 scatterlist[i].page = page;
2217 }
2218
2219 return sglist;
2220}
2221
2222/**
2223 * ipr_free_ucode_buffer - Frees a microcode download buffer
2224 * @p_dnld: scatter/gather list pointer
2225 *
2226 * Free a DMA'able ucode download buffer previously allocated with
2227 * ipr_alloc_ucode_buffer
2228 *
2229 * Return value:
2230 * nothing
2231 **/
2232static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
2233{
2234 int i;
2235
2236 for (i = 0; i < sglist->num_sg; i++)
2237 __free_pages(sglist->scatterlist[i].page, sglist->order);
2238
2239 kfree(sglist);
2240}
2241
2242/**
2243 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
2244 * @sglist: scatter/gather list pointer
2245 * @buffer: buffer pointer
2246 * @len: buffer length
2247 *
2248 * Copy a microcode image from a user buffer into a buffer allocated by
2249 * ipr_alloc_ucode_buffer
2250 *
2251 * Return value:
2252 * 0 on success / other on failure
2253 **/
2254static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
2255 u8 *buffer, u32 len)
2256{
2257 int bsize_elem, i, result = 0;
2258 struct scatterlist *scatterlist;
2259 void *kaddr;
2260
2261 /* Determine the actual number of bytes per element */
2262 bsize_elem = PAGE_SIZE * (1 << sglist->order);
2263
2264 scatterlist = sglist->scatterlist;
2265
2266 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
2267 kaddr = kmap(scatterlist[i].page);
2268 memcpy(kaddr, buffer, bsize_elem);
2269 kunmap(scatterlist[i].page);
2270
2271 scatterlist[i].length = bsize_elem;
2272
2273 if (result != 0) {
2274 ipr_trace;
2275 return result;
2276 }
2277 }
2278
2279 if (len % bsize_elem) {
2280 kaddr = kmap(scatterlist[i].page);
2281 memcpy(kaddr, buffer, len % bsize_elem);
2282 kunmap(scatterlist[i].page);
2283
2284 scatterlist[i].length = len % bsize_elem;
2285 }
2286
2287 sglist->buffer_len = len;
2288 return result;
2289}
2290
2291/**
2292 * ipr_map_ucode_buffer - Map a microcode download buffer
2293 * @ipr_cmd: ipr command struct
2294 * @sglist: scatter/gather list
2295 * @len: total length of download buffer
2296 *
2297 * Maps a microcode download scatter/gather list for DMA and
2298 * builds the IOADL.
2299 *
2300 * Return value:
2301 * 0 on success / -EIO on failure
2302 **/
2303static int ipr_map_ucode_buffer(struct ipr_cmnd *ipr_cmd,
2304 struct ipr_sglist *sglist, int len)
2305{
2306 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2307 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
2308 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
2309 struct scatterlist *scatterlist = sglist->scatterlist;
2310 int i;
2311
2312 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev, scatterlist,
2313 sglist->num_sg, DMA_TO_DEVICE);
2314
2315 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
2316 ioarcb->write_data_transfer_length = cpu_to_be32(len);
2317 ioarcb->write_ioadl_len =
2318 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
2319
2320 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
2321 ioadl[i].flags_and_data_len =
2322 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
2323 ioadl[i].address =
2324 cpu_to_be32(sg_dma_address(&scatterlist[i]));
2325 }
2326
2327 if (likely(ipr_cmd->dma_use_sg)) {
2328 ioadl[i-1].flags_and_data_len |=
2329 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
2330 }
2331 else {
2332 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
2333 return -EIO;
2334 }
2335
2336 return 0;
2337}
2338
2339/**
2340 * ipr_store_update_fw - Update the firmware on the adapter
2341 * @class_dev: class_device struct
2342 * @buf: buffer
2343 * @count: buffer size
2344 *
2345 * This function will update the firmware on the adapter.
2346 *
2347 * Return value:
2348 * count on success / other on failure
2349 **/
2350static ssize_t ipr_store_update_fw(struct class_device *class_dev,
2351 const char *buf, size_t count)
2352{
2353 struct Scsi_Host *shost = class_to_shost(class_dev);
2354 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2355 struct ipr_ucode_image_header *image_hdr;
2356 const struct firmware *fw_entry;
2357 struct ipr_sglist *sglist;
2358 unsigned long lock_flags;
2359 char fname[100];
2360 char *src;
2361 int len, result, dnld_size;
2362
2363 if (!capable(CAP_SYS_ADMIN))
2364 return -EACCES;
2365
2366 len = snprintf(fname, 99, "%s", buf);
2367 fname[len-1] = '\0';
2368
2369 if(request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
2370 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
2371 return -EIO;
2372 }
2373
2374 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
2375
2376 if (be32_to_cpu(image_hdr->header_length) > fw_entry->size ||
2377 (ioa_cfg->vpd_cbs->page3_data.card_type &&
2378 ioa_cfg->vpd_cbs->page3_data.card_type != image_hdr->card_type)) {
2379 dev_err(&ioa_cfg->pdev->dev, "Invalid microcode buffer\n");
2380 release_firmware(fw_entry);
2381 return -EINVAL;
2382 }
2383
2384 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
2385 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
2386 sglist = ipr_alloc_ucode_buffer(dnld_size);
2387
2388 if (!sglist) {
2389 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
2390 release_firmware(fw_entry);
2391 return -ENOMEM;
2392 }
2393
2394 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
2395
2396 if (result) {
2397 dev_err(&ioa_cfg->pdev->dev,
2398 "Microcode buffer copy to DMA buffer failed\n");
2399 ipr_free_ucode_buffer(sglist);
2400 release_firmware(fw_entry);
2401 return result;
2402 }
2403
2404 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2405
2406 if (ioa_cfg->ucode_sglist) {
2407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2408 dev_err(&ioa_cfg->pdev->dev,
2409 "Microcode download already in progress\n");
2410 ipr_free_ucode_buffer(sglist);
2411 release_firmware(fw_entry);
2412 return -EIO;
2413 }
2414
2415 ioa_cfg->ucode_sglist = sglist;
2416 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
2417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2418 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
2419
2420 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2421 ioa_cfg->ucode_sglist = NULL;
2422 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2423
2424 ipr_free_ucode_buffer(sglist);
2425 release_firmware(fw_entry);
2426
2427 return count;
2428}
2429
2430static struct class_device_attribute ipr_update_fw_attr = {
2431 .attr = {
2432 .name = "update_fw",
2433 .mode = S_IWUSR,
2434 },
2435 .store = ipr_store_update_fw
2436};
2437
2438static struct class_device_attribute *ipr_ioa_attrs[] = {
2439 &ipr_fw_version_attr,
2440 &ipr_log_level_attr,
2441 &ipr_diagnostics_attr,
2442 &ipr_ioa_reset_attr,
2443 &ipr_update_fw_attr,
2444 NULL,
2445};
2446
2447#ifdef CONFIG_SCSI_IPR_DUMP
2448/**
2449 * ipr_read_dump - Dump the adapter
2450 * @kobj: kobject struct
2451 * @buf: buffer
2452 * @off: offset
2453 * @count: buffer size
2454 *
2455 * Return value:
2456 * number of bytes printed to buffer
2457 **/
2458static ssize_t ipr_read_dump(struct kobject *kobj, char *buf,
2459 loff_t off, size_t count)
2460{
2461 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2462 struct Scsi_Host *shost = class_to_shost(cdev);
2463 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2464 struct ipr_dump *dump;
2465 unsigned long lock_flags = 0;
2466 char *src;
2467 int len;
2468 size_t rc = count;
2469
2470 if (!capable(CAP_SYS_ADMIN))
2471 return -EACCES;
2472
2473 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2474 dump = ioa_cfg->dump;
2475
2476 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
2477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2478 return 0;
2479 }
2480 kref_get(&dump->kref);
2481 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2482
2483 if (off > dump->driver_dump.hdr.len) {
2484 kref_put(&dump->kref, ipr_release_dump);
2485 return 0;
2486 }
2487
2488 if (off + count > dump->driver_dump.hdr.len) {
2489 count = dump->driver_dump.hdr.len - off;
2490 rc = count;
2491 }
2492
2493 if (count && off < sizeof(dump->driver_dump)) {
2494 if (off + count > sizeof(dump->driver_dump))
2495 len = sizeof(dump->driver_dump) - off;
2496 else
2497 len = count;
2498 src = (u8 *)&dump->driver_dump + off;
2499 memcpy(buf, src, len);
2500 buf += len;
2501 off += len;
2502 count -= len;
2503 }
2504
2505 off -= sizeof(dump->driver_dump);
2506
2507 if (count && off < offsetof(struct ipr_ioa_dump, ioa_data)) {
2508 if (off + count > offsetof(struct ipr_ioa_dump, ioa_data))
2509 len = offsetof(struct ipr_ioa_dump, ioa_data) - off;
2510 else
2511 len = count;
2512 src = (u8 *)&dump->ioa_dump + off;
2513 memcpy(buf, src, len);
2514 buf += len;
2515 off += len;
2516 count -= len;
2517 }
2518
2519 off -= offsetof(struct ipr_ioa_dump, ioa_data);
2520
2521 while (count) {
2522 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
2523 len = PAGE_ALIGN(off) - off;
2524 else
2525 len = count;
2526 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
2527 src += off & ~PAGE_MASK;
2528 memcpy(buf, src, len);
2529 buf += len;
2530 off += len;
2531 count -= len;
2532 }
2533
2534 kref_put(&dump->kref, ipr_release_dump);
2535 return rc;
2536}
2537
2538/**
2539 * ipr_alloc_dump - Prepare for adapter dump
2540 * @ioa_cfg: ioa config struct
2541 *
2542 * Return value:
2543 * 0 on success / other on failure
2544 **/
2545static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
2546{
2547 struct ipr_dump *dump;
2548 unsigned long lock_flags = 0;
2549
2550 ENTER;
2551 dump = kmalloc(sizeof(struct ipr_dump), GFP_KERNEL);
2552
2553 if (!dump) {
2554 ipr_err("Dump memory allocation failed\n");
2555 return -ENOMEM;
2556 }
2557
2558 memset(dump, 0, sizeof(struct ipr_dump));
2559 kref_init(&dump->kref);
2560 dump->ioa_cfg = ioa_cfg;
2561
2562 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2563
2564 if (INACTIVE != ioa_cfg->sdt_state) {
2565 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2566 kfree(dump);
2567 return 0;
2568 }
2569
2570 ioa_cfg->dump = dump;
2571 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
2572 if (ioa_cfg->ioa_is_dead && !ioa_cfg->dump_taken) {
2573 ioa_cfg->dump_taken = 1;
2574 schedule_work(&ioa_cfg->work_q);
2575 }
2576 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2577
2578 LEAVE;
2579 return 0;
2580}
2581
2582/**
2583 * ipr_free_dump - Free adapter dump memory
2584 * @ioa_cfg: ioa config struct
2585 *
2586 * Return value:
2587 * 0 on success / other on failure
2588 **/
2589static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
2590{
2591 struct ipr_dump *dump;
2592 unsigned long lock_flags = 0;
2593
2594 ENTER;
2595
2596 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2597 dump = ioa_cfg->dump;
2598 if (!dump) {
2599 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2600 return 0;
2601 }
2602
2603 ioa_cfg->dump = NULL;
2604 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2605
2606 kref_put(&dump->kref, ipr_release_dump);
2607
2608 LEAVE;
2609 return 0;
2610}
2611
2612/**
2613 * ipr_write_dump - Setup dump state of adapter
2614 * @kobj: kobject struct
2615 * @buf: buffer
2616 * @off: offset
2617 * @count: buffer size
2618 *
2619 * Return value:
2620 * number of bytes printed to buffer
2621 **/
2622static ssize_t ipr_write_dump(struct kobject *kobj, char *buf,
2623 loff_t off, size_t count)
2624{
2625 struct class_device *cdev = container_of(kobj,struct class_device,kobj);
2626 struct Scsi_Host *shost = class_to_shost(cdev);
2627 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
2628 int rc;
2629
2630 if (!capable(CAP_SYS_ADMIN))
2631 return -EACCES;
2632
2633 if (buf[0] == '1')
2634 rc = ipr_alloc_dump(ioa_cfg);
2635 else if (buf[0] == '0')
2636 rc = ipr_free_dump(ioa_cfg);
2637 else
2638 return -EINVAL;
2639
2640 if (rc)
2641 return rc;
2642 else
2643 return count;
2644}
2645
2646static struct bin_attribute ipr_dump_attr = {
2647 .attr = {
2648 .name = "dump",
2649 .mode = S_IRUSR | S_IWUSR,
2650 },
2651 .size = 0,
2652 .read = ipr_read_dump,
2653 .write = ipr_write_dump
2654};
2655#else
2656static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
2657#endif
2658
2659/**
2660 * ipr_change_queue_depth - Change the device's queue depth
2661 * @sdev: scsi device struct
2662 * @qdepth: depth to set
2663 *
2664 * Return value:
2665 * actual depth set
2666 **/
2667static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
2668{
2669 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
2670 return sdev->queue_depth;
2671}
2672
2673/**
2674 * ipr_change_queue_type - Change the device's queue type
2675 * @dsev: scsi device struct
2676 * @tag_type: type of tags to use
2677 *
2678 * Return value:
2679 * actual queue type set
2680 **/
2681static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
2682{
2683 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2684 struct ipr_resource_entry *res;
2685 unsigned long lock_flags = 0;
2686
2687 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2688 res = (struct ipr_resource_entry *)sdev->hostdata;
2689
2690 if (res) {
2691 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
2692 /*
2693 * We don't bother quiescing the device here since the
2694 * adapter firmware does it for us.
2695 */
2696 scsi_set_tag_type(sdev, tag_type);
2697
2698 if (tag_type)
2699 scsi_activate_tcq(sdev, sdev->queue_depth);
2700 else
2701 scsi_deactivate_tcq(sdev, sdev->queue_depth);
2702 } else
2703 tag_type = 0;
2704 } else
2705 tag_type = 0;
2706
2707 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2708 return tag_type;
2709}
2710
2711/**
2712 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
2713 * @dev: device struct
2714 * @buf: buffer
2715 *
2716 * Return value:
2717 * number of bytes printed to buffer
2718 **/
Yani Ioannou10523b32005-05-17 06:43:37 -04002719static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002720{
2721 struct scsi_device *sdev = to_scsi_device(dev);
2722 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
2723 struct ipr_resource_entry *res;
2724 unsigned long lock_flags = 0;
2725 ssize_t len = -ENXIO;
2726
2727 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2728 res = (struct ipr_resource_entry *)sdev->hostdata;
2729 if (res)
2730 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->cfgte.res_handle);
2731 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2732 return len;
2733}
2734
2735static struct device_attribute ipr_adapter_handle_attr = {
2736 .attr = {
2737 .name = "adapter_handle",
2738 .mode = S_IRUSR,
2739 },
2740 .show = ipr_show_adapter_handle
2741};
2742
2743static struct device_attribute *ipr_dev_attrs[] = {
2744 &ipr_adapter_handle_attr,
2745 NULL,
2746};
2747
2748/**
2749 * ipr_biosparam - Return the HSC mapping
2750 * @sdev: scsi device struct
2751 * @block_device: block device pointer
2752 * @capacity: capacity of the device
2753 * @parm: Array containing returned HSC values.
2754 *
2755 * This function generates the HSC parms that fdisk uses.
2756 * We want to make sure we return something that places partitions
2757 * on 4k boundaries for best performance with the IOA.
2758 *
2759 * Return value:
2760 * 0 on success
2761 **/
2762static int ipr_biosparam(struct scsi_device *sdev,
2763 struct block_device *block_device,
2764 sector_t capacity, int *parm)
2765{
2766 int heads, sectors;
2767 sector_t cylinders;
2768
2769 heads = 128;
2770 sectors = 32;
2771
2772 cylinders = capacity;
2773 sector_div(cylinders, (128 * 32));
2774
2775 /* return result */
2776 parm[0] = heads;
2777 parm[1] = sectors;
2778 parm[2] = cylinders;
2779
2780 return 0;
2781}
2782
2783/**
2784 * ipr_slave_destroy - Unconfigure a SCSI device
2785 * @sdev: scsi device struct
2786 *
2787 * Return value:
2788 * nothing
2789 **/
2790static void ipr_slave_destroy(struct scsi_device *sdev)
2791{
2792 struct ipr_resource_entry *res;
2793 struct ipr_ioa_cfg *ioa_cfg;
2794 unsigned long lock_flags = 0;
2795
2796 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2797
2798 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2799 res = (struct ipr_resource_entry *) sdev->hostdata;
2800 if (res) {
2801 sdev->hostdata = NULL;
2802 res->sdev = NULL;
2803 }
2804 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2805}
2806
2807/**
2808 * ipr_slave_configure - Configure a SCSI device
2809 * @sdev: scsi device struct
2810 *
2811 * This function configures the specified scsi device.
2812 *
2813 * Return value:
2814 * 0 on success
2815 **/
2816static int ipr_slave_configure(struct scsi_device *sdev)
2817{
2818 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2819 struct ipr_resource_entry *res;
2820 unsigned long lock_flags = 0;
2821
2822 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2823 res = sdev->hostdata;
2824 if (res) {
2825 if (ipr_is_af_dasd_device(res))
2826 sdev->type = TYPE_RAID;
2827 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res))
2828 sdev->scsi_level = 4;
2829 if (ipr_is_vset_device(res)) {
2830 sdev->timeout = IPR_VSET_RW_TIMEOUT;
2831 blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
2832 }
2833 if (IPR_IS_DASD_DEVICE(res->cfgte.std_inq_data))
2834 sdev->allow_restart = 1;
2835 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
2836 }
2837 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2838 return 0;
2839}
2840
2841/**
2842 * ipr_slave_alloc - Prepare for commands to a device.
2843 * @sdev: scsi device struct
2844 *
2845 * This function saves a pointer to the resource entry
2846 * in the scsi device struct if the device exists. We
2847 * can then use this pointer in ipr_queuecommand when
2848 * handling new commands.
2849 *
2850 * Return value:
2851 * 0 on success
2852 **/
2853static int ipr_slave_alloc(struct scsi_device *sdev)
2854{
2855 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
2856 struct ipr_resource_entry *res;
2857 unsigned long lock_flags;
2858
2859 sdev->hostdata = NULL;
2860
2861 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2862
2863 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2864 if ((res->cfgte.res_addr.bus == sdev->channel) &&
2865 (res->cfgte.res_addr.target == sdev->id) &&
2866 (res->cfgte.res_addr.lun == sdev->lun)) {
2867 res->sdev = sdev;
2868 res->add_to_ml = 0;
2869 res->in_erp = 0;
2870 sdev->hostdata = res;
2871 res->needs_sync_complete = 1;
2872 break;
2873 }
2874 }
2875
2876 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2877
2878 return 0;
2879}
2880
2881/**
2882 * ipr_eh_host_reset - Reset the host adapter
2883 * @scsi_cmd: scsi command struct
2884 *
2885 * Return value:
2886 * SUCCESS / FAILED
2887 **/
Jeff Garzik df0ae242005-05-28 07:57:14 -04002888static int __ipr_eh_host_reset(struct scsi_cmnd * scsi_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002889{
2890 struct ipr_ioa_cfg *ioa_cfg;
2891 int rc;
2892
2893 ENTER;
2894 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2895
2896 dev_err(&ioa_cfg->pdev->dev,
2897 "Adapter being reset as a result of error recovery.\n");
2898
2899 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2900 ioa_cfg->sdt_state = GET_DUMP;
2901
2902 rc = ipr_reset_reload(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2903
2904 LEAVE;
2905 return rc;
2906}
2907
Jeff Garzik df0ae242005-05-28 07:57:14 -04002908static int ipr_eh_host_reset(struct scsi_cmnd * cmd)
2909{
2910 int rc;
2911
2912 spin_lock_irq(cmd->device->host->host_lock);
2913 rc = __ipr_eh_host_reset(cmd);
2914 spin_unlock_irq(cmd->device->host->host_lock);
2915
2916 return rc;
2917}
2918
Linus Torvalds1da177e2005-04-16 15:20:36 -07002919/**
2920 * ipr_eh_dev_reset - Reset the device
2921 * @scsi_cmd: scsi command struct
2922 *
2923 * This function issues a device reset to the affected device.
2924 * A LUN reset will be sent to the device first. If that does
2925 * not work, a target reset will be sent.
2926 *
2927 * Return value:
2928 * SUCCESS / FAILED
2929 **/
Jeff Garzik 94d0e7b2005-05-28 07:55:48 -04002930static int __ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002931{
2932 struct ipr_cmnd *ipr_cmd;
2933 struct ipr_ioa_cfg *ioa_cfg;
2934 struct ipr_resource_entry *res;
2935 struct ipr_cmd_pkt *cmd_pkt;
2936 u32 ioasc;
2937
2938 ENTER;
2939 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
2940 res = scsi_cmd->device->hostdata;
2941
2942 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
2943 return FAILED;
2944
2945 /*
2946 * If we are currently going through reset/reload, return failed. This will force the
2947 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
2948 * reset to complete
2949 */
2950 if (ioa_cfg->in_reset_reload)
2951 return FAILED;
2952 if (ioa_cfg->ioa_is_dead)
2953 return FAILED;
2954
2955 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
2956 if (ipr_cmd->ioarcb.res_handle == res->cfgte.res_handle) {
2957 if (ipr_cmd->scsi_cmd)
2958 ipr_cmd->done = ipr_scsi_eh_done;
2959 }
2960 }
2961
2962 res->resetting_device = 1;
2963
2964 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
2965
2966 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
2967 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
2968 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
2969 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
2970
2971 ipr_sdev_err(scsi_cmd->device, "Resetting device\n");
2972 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
2973
2974 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
2975
2976 res->resetting_device = 0;
2977
2978 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
2979
2980 LEAVE;
2981 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
2982}
2983
Jeff Garzik 94d0e7b2005-05-28 07:55:48 -04002984static int ipr_eh_dev_reset(struct scsi_cmnd * cmd)
2985{
2986 int rc;
2987
2988 spin_lock_irq(cmd->device->host->host_lock);
2989 rc = __ipr_eh_dev_reset(cmd);
2990 spin_unlock_irq(cmd->device->host->host_lock);
2991
2992 return rc;
2993}
2994
Linus Torvalds1da177e2005-04-16 15:20:36 -07002995/**
2996 * ipr_bus_reset_done - Op done function for bus reset.
2997 * @ipr_cmd: ipr command struct
2998 *
2999 * This function is the op done function for a bus reset
3000 *
3001 * Return value:
3002 * none
3003 **/
3004static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
3005{
3006 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3007 struct ipr_resource_entry *res;
3008
3009 ENTER;
3010 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3011 if (!memcmp(&res->cfgte.res_handle, &ipr_cmd->ioarcb.res_handle,
3012 sizeof(res->cfgte.res_handle))) {
3013 scsi_report_bus_reset(ioa_cfg->host, res->cfgte.res_addr.bus);
3014 break;
3015 }
3016 }
3017
3018 /*
3019 * If abort has not completed, indicate the reset has, else call the
3020 * abort's done function to wake the sleeping eh thread
3021 */
3022 if (ipr_cmd->sibling->sibling)
3023 ipr_cmd->sibling->sibling = NULL;
3024 else
3025 ipr_cmd->sibling->done(ipr_cmd->sibling);
3026
3027 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3028 LEAVE;
3029}
3030
3031/**
3032 * ipr_abort_timeout - An abort task has timed out
3033 * @ipr_cmd: ipr command struct
3034 *
3035 * This function handles when an abort task times out. If this
3036 * happens we issue a bus reset since we have resources tied
3037 * up that must be freed before returning to the midlayer.
3038 *
3039 * Return value:
3040 * none
3041 **/
3042static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
3043{
3044 struct ipr_cmnd *reset_cmd;
3045 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3046 struct ipr_cmd_pkt *cmd_pkt;
3047 unsigned long lock_flags = 0;
3048
3049 ENTER;
3050 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3051 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
3052 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3053 return;
3054 }
3055
3056 ipr_sdev_err(ipr_cmd->u.sdev, "Abort timed out. Resetting bus\n");
3057 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3058 ipr_cmd->sibling = reset_cmd;
3059 reset_cmd->sibling = ipr_cmd;
3060 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
3061 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
3062 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3063 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
3064 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
3065
3066 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
3067 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3068 LEAVE;
3069}
3070
3071/**
3072 * ipr_cancel_op - Cancel specified op
3073 * @scsi_cmd: scsi command struct
3074 *
3075 * This function cancels specified op.
3076 *
3077 * Return value:
3078 * SUCCESS / FAILED
3079 **/
3080static int ipr_cancel_op(struct scsi_cmnd * scsi_cmd)
3081{
3082 struct ipr_cmnd *ipr_cmd;
3083 struct ipr_ioa_cfg *ioa_cfg;
3084 struct ipr_resource_entry *res;
3085 struct ipr_cmd_pkt *cmd_pkt;
3086 u32 ioasc;
3087 int op_found = 0;
3088
3089 ENTER;
3090 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3091 res = scsi_cmd->device->hostdata;
3092
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003093 /* If we are currently going through reset/reload, return failed.
3094 * This will force the mid-layer to call ipr_eh_host_reset,
3095 * which will then go to sleep and wait for the reset to complete
3096 */
3097 if (ioa_cfg->in_reset_reload || ioa_cfg->ioa_is_dead)
3098 return FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003099 if (!res || (!ipr_is_gscsi(res) && !ipr_is_vset_device(res)))
3100 return FAILED;
3101
3102 list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
3103 if (ipr_cmd->scsi_cmd == scsi_cmd) {
3104 ipr_cmd->done = ipr_scsi_eh_done;
3105 op_found = 1;
3106 break;
3107 }
3108 }
3109
3110 if (!op_found)
3111 return SUCCESS;
3112
3113 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3114 ipr_cmd->ioarcb.res_handle = res->cfgte.res_handle;
3115 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3116 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3117 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3118 ipr_cmd->u.sdev = scsi_cmd->device;
3119
3120 ipr_sdev_err(scsi_cmd->device, "Aborting command: %02X\n", scsi_cmd->cmnd[0]);
3121 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
3122 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3123
3124 /*
3125 * If the abort task timed out and we sent a bus reset, we will get
3126 * one the following responses to the abort
3127 */
3128 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
3129 ioasc = 0;
3130 ipr_trace;
3131 }
3132
3133 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3134 res->needs_sync_complete = 1;
3135
3136 LEAVE;
3137 return (IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS);
3138}
3139
3140/**
3141 * ipr_eh_abort - Abort a single op
3142 * @scsi_cmd: scsi command struct
3143 *
3144 * Return value:
3145 * SUCCESS / FAILED
3146 **/
3147static int ipr_eh_abort(struct scsi_cmnd * scsi_cmd)
3148{
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003149 unsigned long flags;
3150 int rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003151
3152 ENTER;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003153
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003154 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
3155 rc = ipr_cancel_op(scsi_cmd);
3156 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07003157
3158 LEAVE;
Jeff Garzik 8fa728a2005-05-28 07:54:40 -04003159 return rc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07003160}
3161
3162/**
3163 * ipr_handle_other_interrupt - Handle "other" interrupts
3164 * @ioa_cfg: ioa config struct
3165 * @int_reg: interrupt register
3166 *
3167 * Return value:
3168 * IRQ_NONE / IRQ_HANDLED
3169 **/
3170static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
3171 volatile u32 int_reg)
3172{
3173 irqreturn_t rc = IRQ_HANDLED;
3174
3175 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
3176 /* Mask the interrupt */
3177 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
3178
3179 /* Clear the interrupt */
3180 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
3181 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
3182
3183 list_del(&ioa_cfg->reset_cmd->queue);
3184 del_timer(&ioa_cfg->reset_cmd->timer);
3185 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
3186 } else {
3187 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
3188 ioa_cfg->ioa_unit_checked = 1;
3189 else
3190 dev_err(&ioa_cfg->pdev->dev,
3191 "Permanent IOA failure. 0x%08X\n", int_reg);
3192
3193 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3194 ioa_cfg->sdt_state = GET_DUMP;
3195
3196 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
3197 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3198 }
3199
3200 return rc;
3201}
3202
3203/**
3204 * ipr_isr - Interrupt service routine
3205 * @irq: irq number
3206 * @devp: pointer to ioa config struct
3207 * @regs: pt_regs struct
3208 *
3209 * Return value:
3210 * IRQ_NONE / IRQ_HANDLED
3211 **/
3212static irqreturn_t ipr_isr(int irq, void *devp, struct pt_regs *regs)
3213{
3214 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
3215 unsigned long lock_flags = 0;
3216 volatile u32 int_reg, int_mask_reg;
3217 u32 ioasc;
3218 u16 cmd_index;
3219 struct ipr_cmnd *ipr_cmd;
3220 irqreturn_t rc = IRQ_NONE;
3221
3222 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3223
3224 /* If interrupts are disabled, ignore the interrupt */
3225 if (!ioa_cfg->allow_interrupts) {
3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227 return IRQ_NONE;
3228 }
3229
3230 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
3231 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3232
3233 /* If an interrupt on the adapter did not occur, ignore it */
3234 if (unlikely((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0)) {
3235 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3236 return IRQ_NONE;
3237 }
3238
3239 while (1) {
3240 ipr_cmd = NULL;
3241
3242 while ((be32_to_cpu(*ioa_cfg->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
3243 ioa_cfg->toggle_bit) {
3244
3245 cmd_index = (be32_to_cpu(*ioa_cfg->hrrq_curr) &
3246 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >> IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
3247
3248 if (unlikely(cmd_index >= IPR_NUM_CMD_BLKS)) {
3249 ioa_cfg->errors_logged++;
3250 dev_err(&ioa_cfg->pdev->dev, "Invalid response handle from IOA\n");
3251
3252 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
3253 ioa_cfg->sdt_state = GET_DUMP;
3254
3255 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3256 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3257 return IRQ_HANDLED;
3258 }
3259
3260 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
3261
3262 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3263
3264 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
3265
3266 list_del(&ipr_cmd->queue);
3267 del_timer(&ipr_cmd->timer);
3268 ipr_cmd->done(ipr_cmd);
3269
3270 rc = IRQ_HANDLED;
3271
3272 if (ioa_cfg->hrrq_curr < ioa_cfg->hrrq_end) {
3273 ioa_cfg->hrrq_curr++;
3274 } else {
3275 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
3276 ioa_cfg->toggle_bit ^= 1u;
3277 }
3278 }
3279
3280 if (ipr_cmd != NULL) {
3281 /* Clear the PCI interrupt */
3282 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg);
3283 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
3284 } else
3285 break;
3286 }
3287
3288 if (unlikely(rc == IRQ_NONE))
3289 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
3290
3291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3292 return rc;
3293}
3294
3295/**
3296 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
3297 * @ioa_cfg: ioa config struct
3298 * @ipr_cmd: ipr command struct
3299 *
3300 * Return value:
3301 * 0 on success / -1 on failure
3302 **/
3303static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
3304 struct ipr_cmnd *ipr_cmd)
3305{
3306 int i;
3307 struct scatterlist *sglist;
3308 u32 length;
3309 u32 ioadl_flags = 0;
3310 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3311 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3312 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
3313
3314 length = scsi_cmd->request_bufflen;
3315
3316 if (length == 0)
3317 return 0;
3318
3319 if (scsi_cmd->use_sg) {
3320 ipr_cmd->dma_use_sg = pci_map_sg(ioa_cfg->pdev,
3321 scsi_cmd->request_buffer,
3322 scsi_cmd->use_sg,
3323 scsi_cmd->sc_data_direction);
3324
3325 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3326 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3327 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3328 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3329 ioarcb->write_ioadl_len =
3330 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3331 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3332 ioadl_flags = IPR_IOADL_FLAGS_READ;
3333 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3334 ioarcb->read_ioadl_len =
3335 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3336 }
3337
3338 sglist = scsi_cmd->request_buffer;
3339
3340 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3341 ioadl[i].flags_and_data_len =
3342 cpu_to_be32(ioadl_flags | sg_dma_len(&sglist[i]));
3343 ioadl[i].address =
3344 cpu_to_be32(sg_dma_address(&sglist[i]));
3345 }
3346
3347 if (likely(ipr_cmd->dma_use_sg)) {
3348 ioadl[i-1].flags_and_data_len |=
3349 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3350 return 0;
3351 } else
3352 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
3353 } else {
3354 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
3355 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
3356 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3357 ioarcb->write_data_transfer_length = cpu_to_be32(length);
3358 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3359 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
3360 ioadl_flags = IPR_IOADL_FLAGS_READ;
3361 ioarcb->read_data_transfer_length = cpu_to_be32(length);
3362 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3363 }
3364
3365 ipr_cmd->dma_handle = pci_map_single(ioa_cfg->pdev,
3366 scsi_cmd->request_buffer, length,
3367 scsi_cmd->sc_data_direction);
3368
3369 if (likely(!pci_dma_mapping_error(ipr_cmd->dma_handle))) {
3370 ipr_cmd->dma_use_sg = 1;
3371 ioadl[0].flags_and_data_len =
3372 cpu_to_be32(ioadl_flags | length | IPR_IOADL_FLAGS_LAST);
3373 ioadl[0].address = cpu_to_be32(ipr_cmd->dma_handle);
3374 return 0;
3375 } else
3376 dev_err(&ioa_cfg->pdev->dev, "pci_map_single failed!\n");
3377 }
3378
3379 return -1;
3380}
3381
3382/**
3383 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
3384 * @scsi_cmd: scsi command struct
3385 *
3386 * Return value:
3387 * task attributes
3388 **/
3389static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
3390{
3391 u8 tag[2];
3392 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
3393
3394 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
3395 switch (tag[0]) {
3396 case MSG_SIMPLE_TAG:
3397 rc = IPR_FLAGS_LO_SIMPLE_TASK;
3398 break;
3399 case MSG_HEAD_TAG:
3400 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
3401 break;
3402 case MSG_ORDERED_TAG:
3403 rc = IPR_FLAGS_LO_ORDERED_TASK;
3404 break;
3405 };
3406 }
3407
3408 return rc;
3409}
3410
3411/**
3412 * ipr_erp_done - Process completion of ERP for a device
3413 * @ipr_cmd: ipr command struct
3414 *
3415 * This function copies the sense buffer into the scsi_cmd
3416 * struct and pushes the scsi_done function.
3417 *
3418 * Return value:
3419 * nothing
3420 **/
3421static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
3422{
3423 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3424 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3425 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3426 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3427
3428 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3429 scsi_cmd->result |= (DID_ERROR << 16);
3430 ipr_sdev_err(scsi_cmd->device,
3431 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
3432 } else {
3433 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
3434 SCSI_SENSE_BUFFERSIZE);
3435 }
3436
3437 if (res) {
3438 res->needs_sync_complete = 1;
3439 res->in_erp = 0;
3440 }
3441 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3442 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3443 scsi_cmd->scsi_done(scsi_cmd);
3444}
3445
3446/**
3447 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
3448 * @ipr_cmd: ipr command struct
3449 *
3450 * Return value:
3451 * none
3452 **/
3453static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
3454{
3455 struct ipr_ioarcb *ioarcb;
3456 struct ipr_ioasa *ioasa;
3457
3458 ioarcb = &ipr_cmd->ioarcb;
3459 ioasa = &ipr_cmd->ioasa;
3460
3461 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
3462 ioarcb->write_data_transfer_length = 0;
3463 ioarcb->read_data_transfer_length = 0;
3464 ioarcb->write_ioadl_len = 0;
3465 ioarcb->read_ioadl_len = 0;
3466 ioasa->ioasc = 0;
3467 ioasa->residual_data_len = 0;
3468}
3469
3470/**
3471 * ipr_erp_request_sense - Send request sense to a device
3472 * @ipr_cmd: ipr command struct
3473 *
3474 * This function sends a request sense to a device as a result
3475 * of a check condition.
3476 *
3477 * Return value:
3478 * nothing
3479 **/
3480static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
3481{
3482 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3483 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3484
3485 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
3486 ipr_erp_done(ipr_cmd);
3487 return;
3488 }
3489
3490 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3491
3492 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
3493 cmd_pkt->cdb[0] = REQUEST_SENSE;
3494 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
3495 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
3496 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3497 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
3498
3499 ipr_cmd->ioadl[0].flags_and_data_len =
3500 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | SCSI_SENSE_BUFFERSIZE);
3501 ipr_cmd->ioadl[0].address =
3502 cpu_to_be32(ipr_cmd->sense_buffer_dma);
3503
3504 ipr_cmd->ioarcb.read_ioadl_len =
3505 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
3506 ipr_cmd->ioarcb.read_data_transfer_length =
3507 cpu_to_be32(SCSI_SENSE_BUFFERSIZE);
3508
3509 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
3510 IPR_REQUEST_SENSE_TIMEOUT * 2);
3511}
3512
3513/**
3514 * ipr_erp_cancel_all - Send cancel all to a device
3515 * @ipr_cmd: ipr command struct
3516 *
3517 * This function sends a cancel all to a device to clear the
3518 * queue. If we are running TCQ on the device, QERR is set to 1,
3519 * which means all outstanding ops have been dropped on the floor.
3520 * Cancel all will return them to us.
3521 *
3522 * Return value:
3523 * nothing
3524 **/
3525static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
3526{
3527 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3528 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3529 struct ipr_cmd_pkt *cmd_pkt;
3530
3531 res->in_erp = 1;
3532
3533 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
3534
3535 if (!scsi_get_tag_type(scsi_cmd->device)) {
3536 ipr_erp_request_sense(ipr_cmd);
3537 return;
3538 }
3539
3540 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
3541 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
3542 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
3543
3544 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
3545 IPR_CANCEL_ALL_TIMEOUT);
3546}
3547
3548/**
3549 * ipr_dump_ioasa - Dump contents of IOASA
3550 * @ioa_cfg: ioa config struct
3551 * @ipr_cmd: ipr command struct
3552 *
3553 * This function is invoked by the interrupt handler when ops
3554 * fail. It will log the IOASA if appropriate. Only called
3555 * for GPDD ops.
3556 *
3557 * Return value:
3558 * none
3559 **/
3560static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
3561 struct ipr_cmnd *ipr_cmd)
3562{
3563 int i;
3564 u16 data_len;
3565 u32 ioasc;
3566 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3567 __be32 *ioasa_data = (__be32 *)ioasa;
3568 int error_index;
3569
3570 ioasc = be32_to_cpu(ioasa->ioasc) & IPR_IOASC_IOASC_MASK;
3571
3572 if (0 == ioasc)
3573 return;
3574
3575 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
3576 return;
3577
3578 error_index = ipr_get_error(ioasc);
3579
3580 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
3581 /* Don't log an error if the IOA already logged one */
3582 if (ioasa->ilid != 0)
3583 return;
3584
3585 if (ipr_error_table[error_index].log_ioasa == 0)
3586 return;
3587 }
3588
3589 ipr_sdev_err(ipr_cmd->scsi_cmd->device, "%s\n",
3590 ipr_error_table[error_index].error);
3591
3592 if ((ioasa->u.gpdd.end_state <= ARRAY_SIZE(ipr_gpdd_dev_end_states)) &&
3593 (ioasa->u.gpdd.bus_phase <= ARRAY_SIZE(ipr_gpdd_dev_bus_phases))) {
3594 ipr_sdev_err(ipr_cmd->scsi_cmd->device,
3595 "Device End state: %s Phase: %s\n",
3596 ipr_gpdd_dev_end_states[ioasa->u.gpdd.end_state],
3597 ipr_gpdd_dev_bus_phases[ioasa->u.gpdd.bus_phase]);
3598 }
3599
3600 if (sizeof(struct ipr_ioasa) < be16_to_cpu(ioasa->ret_stat_len))
3601 data_len = sizeof(struct ipr_ioasa);
3602 else
3603 data_len = be16_to_cpu(ioasa->ret_stat_len);
3604
3605 ipr_err("IOASA Dump:\n");
3606
3607 for (i = 0; i < data_len / 4; i += 4) {
3608 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
3609 be32_to_cpu(ioasa_data[i]),
3610 be32_to_cpu(ioasa_data[i+1]),
3611 be32_to_cpu(ioasa_data[i+2]),
3612 be32_to_cpu(ioasa_data[i+3]));
3613 }
3614}
3615
3616/**
3617 * ipr_gen_sense - Generate SCSI sense data from an IOASA
3618 * @ioasa: IOASA
3619 * @sense_buf: sense data buffer
3620 *
3621 * Return value:
3622 * none
3623 **/
3624static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
3625{
3626 u32 failing_lba;
3627 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
3628 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
3629 struct ipr_ioasa *ioasa = &ipr_cmd->ioasa;
3630 u32 ioasc = be32_to_cpu(ioasa->ioasc);
3631
3632 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
3633
3634 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
3635 return;
3636
3637 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
3638
3639 if (ipr_is_vset_device(res) &&
3640 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
3641 ioasa->u.vset.failing_lba_hi != 0) {
3642 sense_buf[0] = 0x72;
3643 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
3644 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
3645 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
3646
3647 sense_buf[7] = 12;
3648 sense_buf[8] = 0;
3649 sense_buf[9] = 0x0A;
3650 sense_buf[10] = 0x80;
3651
3652 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
3653
3654 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
3655 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
3656 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
3657 sense_buf[15] = failing_lba & 0x000000ff;
3658
3659 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3660
3661 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
3662 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
3663 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
3664 sense_buf[19] = failing_lba & 0x000000ff;
3665 } else {
3666 sense_buf[0] = 0x70;
3667 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
3668 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
3669 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
3670
3671 /* Illegal request */
3672 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
3673 (be32_to_cpu(ioasa->ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
3674 sense_buf[7] = 10; /* additional length */
3675
3676 /* IOARCB was in error */
3677 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
3678 sense_buf[15] = 0xC0;
3679 else /* Parameter data was invalid */
3680 sense_buf[15] = 0x80;
3681
3682 sense_buf[16] =
3683 ((IPR_FIELD_POINTER_MASK &
3684 be32_to_cpu(ioasa->ioasc_specific)) >> 8) & 0xff;
3685 sense_buf[17] =
3686 (IPR_FIELD_POINTER_MASK &
3687 be32_to_cpu(ioasa->ioasc_specific)) & 0xff;
3688 } else {
3689 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
3690 if (ipr_is_vset_device(res))
3691 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
3692 else
3693 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
3694
3695 sense_buf[0] |= 0x80; /* Or in the Valid bit */
3696 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
3697 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
3698 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
3699 sense_buf[6] = failing_lba & 0x000000ff;
3700 }
3701
3702 sense_buf[7] = 6; /* additional length */
3703 }
3704 }
3705}
3706
3707/**
3708 * ipr_erp_start - Process an error response for a SCSI op
3709 * @ioa_cfg: ioa config struct
3710 * @ipr_cmd: ipr command struct
3711 *
3712 * This function determines whether or not to initiate ERP
3713 * on the affected device.
3714 *
3715 * Return value:
3716 * nothing
3717 **/
3718static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
3719 struct ipr_cmnd *ipr_cmd)
3720{
3721 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3722 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
3723 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3724
3725 if (!res) {
3726 ipr_scsi_eh_done(ipr_cmd);
3727 return;
3728 }
3729
3730 if (ipr_is_gscsi(res))
3731 ipr_dump_ioasa(ioa_cfg, ipr_cmd);
3732 else
3733 ipr_gen_sense(ipr_cmd);
3734
3735 switch (ioasc & IPR_IOASC_IOASC_MASK) {
3736 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
3737 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3738 break;
3739 case IPR_IOASC_IR_RESOURCE_HANDLE:
3740 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3741 break;
3742 case IPR_IOASC_HW_SEL_TIMEOUT:
3743 scsi_cmd->result |= (DID_NO_CONNECT << 16);
3744 res->needs_sync_complete = 1;
3745 break;
3746 case IPR_IOASC_SYNC_REQUIRED:
3747 if (!res->in_erp)
3748 res->needs_sync_complete = 1;
3749 scsi_cmd->result |= (DID_IMM_RETRY << 16);
3750 break;
3751 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
3752 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
3753 break;
3754 case IPR_IOASC_BUS_WAS_RESET:
3755 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
3756 /*
3757 * Report the bus reset and ask for a retry. The device
3758 * will give CC/UA the next command.
3759 */
3760 if (!res->resetting_device)
3761 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
3762 scsi_cmd->result |= (DID_ERROR << 16);
3763 res->needs_sync_complete = 1;
3764 break;
3765 case IPR_IOASC_HW_DEV_BUS_STATUS:
3766 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
3767 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
3768 ipr_erp_cancel_all(ipr_cmd);
3769 return;
3770 }
3771 res->needs_sync_complete = 1;
3772 break;
3773 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
3774 break;
3775 default:
3776 scsi_cmd->result |= (DID_ERROR << 16);
3777 if (!ipr_is_vset_device(res))
3778 res->needs_sync_complete = 1;
3779 break;
3780 }
3781
3782 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3783 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3784 scsi_cmd->scsi_done(scsi_cmd);
3785}
3786
3787/**
3788 * ipr_scsi_done - mid-layer done function
3789 * @ipr_cmd: ipr command struct
3790 *
3791 * This function is invoked by the interrupt handler for
3792 * ops generated by the SCSI mid-layer
3793 *
3794 * Return value:
3795 * none
3796 **/
3797static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
3798{
3799 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
3800 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
3801 u32 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
3802
3803 scsi_cmd->resid = be32_to_cpu(ipr_cmd->ioasa.residual_data_len);
3804
3805 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
3806 ipr_unmap_sglist(ioa_cfg, ipr_cmd);
3807 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3808 scsi_cmd->scsi_done(scsi_cmd);
3809 } else
3810 ipr_erp_start(ioa_cfg, ipr_cmd);
3811}
3812
3813/**
3814 * ipr_save_ioafp_mode_select - Save adapters mode select data
3815 * @ioa_cfg: ioa config struct
3816 * @scsi_cmd: scsi command struct
3817 *
3818 * This function saves mode select data for the adapter to
3819 * use following an adapter reset.
3820 *
3821 * Return value:
3822 * 0 on success / SCSI_MLQUEUE_HOST_BUSY on failure
3823 **/
3824static int ipr_save_ioafp_mode_select(struct ipr_ioa_cfg *ioa_cfg,
3825 struct scsi_cmnd *scsi_cmd)
3826{
3827 if (!ioa_cfg->saved_mode_pages) {
3828 ioa_cfg->saved_mode_pages = kmalloc(sizeof(struct ipr_mode_pages),
3829 GFP_ATOMIC);
3830 if (!ioa_cfg->saved_mode_pages) {
3831 dev_err(&ioa_cfg->pdev->dev,
3832 "IOA mode select buffer allocation failed\n");
3833 return SCSI_MLQUEUE_HOST_BUSY;
3834 }
3835 }
3836
3837 memcpy(ioa_cfg->saved_mode_pages, scsi_cmd->buffer, scsi_cmd->cmnd[4]);
3838 ioa_cfg->saved_mode_page_len = scsi_cmd->cmnd[4];
3839 return 0;
3840}
3841
3842/**
3843 * ipr_queuecommand - Queue a mid-layer request
3844 * @scsi_cmd: scsi command struct
3845 * @done: done function
3846 *
3847 * This function queues a request generated by the mid-layer.
3848 *
3849 * Return value:
3850 * 0 on success
3851 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
3852 * SCSI_MLQUEUE_HOST_BUSY if host is busy
3853 **/
3854static int ipr_queuecommand(struct scsi_cmnd *scsi_cmd,
3855 void (*done) (struct scsi_cmnd *))
3856{
3857 struct ipr_ioa_cfg *ioa_cfg;
3858 struct ipr_resource_entry *res;
3859 struct ipr_ioarcb *ioarcb;
3860 struct ipr_cmnd *ipr_cmd;
3861 int rc = 0;
3862
3863 scsi_cmd->scsi_done = done;
3864 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
3865 res = scsi_cmd->device->hostdata;
3866 scsi_cmd->result = (DID_OK << 16);
3867
3868 /*
3869 * We are currently blocking all devices due to a host reset
3870 * We have told the host to stop giving us new requests, but
3871 * ERP ops don't count. FIXME
3872 */
3873 if (unlikely(!ioa_cfg->allow_cmds && !ioa_cfg->ioa_is_dead))
3874 return SCSI_MLQUEUE_HOST_BUSY;
3875
3876 /*
3877 * FIXME - Create scsi_set_host_offline interface
3878 * and the ioa_is_dead check can be removed
3879 */
3880 if (unlikely(ioa_cfg->ioa_is_dead || !res)) {
3881 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
3882 scsi_cmd->result = (DID_NO_CONNECT << 16);
3883 scsi_cmd->scsi_done(scsi_cmd);
3884 return 0;
3885 }
3886
3887 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
3888 ioarcb = &ipr_cmd->ioarcb;
3889 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
3890
3891 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
3892 ipr_cmd->scsi_cmd = scsi_cmd;
3893 ioarcb->res_handle = res->cfgte.res_handle;
3894 ipr_cmd->done = ipr_scsi_done;
3895 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_PHYS_LOC(res->cfgte.res_addr));
3896
3897 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
3898 if (scsi_cmd->underflow == 0)
3899 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
3900
3901 if (res->needs_sync_complete) {
3902 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
3903 res->needs_sync_complete = 0;
3904 }
3905
3906 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
3907 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
3908 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
3909 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
3910 }
3911
3912 if (scsi_cmd->cmnd[0] >= 0xC0 &&
3913 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE))
3914 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
3915
3916 if (ipr_is_ioa_resource(res) && scsi_cmd->cmnd[0] == MODE_SELECT)
3917 rc = ipr_save_ioafp_mode_select(ioa_cfg, scsi_cmd);
3918
3919 if (likely(rc == 0))
3920 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
3921
3922 if (likely(rc == 0)) {
3923 mb();
3924 writel(be32_to_cpu(ipr_cmd->ioarcb.ioarcb_host_pci_addr),
3925 ioa_cfg->regs.ioarrin_reg);
3926 } else {
3927 list_move_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
3928 return SCSI_MLQUEUE_HOST_BUSY;
3929 }
3930
3931 return 0;
3932}
3933
3934/**
3935 * ipr_info - Get information about the card/driver
3936 * @scsi_host: scsi host struct
3937 *
3938 * Return value:
3939 * pointer to buffer with description string
3940 **/
3941static const char * ipr_ioa_info(struct Scsi_Host *host)
3942{
3943 static char buffer[512];
3944 struct ipr_ioa_cfg *ioa_cfg;
3945 unsigned long lock_flags = 0;
3946
3947 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
3948
3949 spin_lock_irqsave(host->host_lock, lock_flags);
3950 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
3951 spin_unlock_irqrestore(host->host_lock, lock_flags);
3952
3953 return buffer;
3954}
3955
3956static struct scsi_host_template driver_template = {
3957 .module = THIS_MODULE,
3958 .name = "IPR",
3959 .info = ipr_ioa_info,
3960 .queuecommand = ipr_queuecommand,
3961 .eh_abort_handler = ipr_eh_abort,
3962 .eh_device_reset_handler = ipr_eh_dev_reset,
3963 .eh_host_reset_handler = ipr_eh_host_reset,
3964 .slave_alloc = ipr_slave_alloc,
3965 .slave_configure = ipr_slave_configure,
3966 .slave_destroy = ipr_slave_destroy,
3967 .change_queue_depth = ipr_change_queue_depth,
3968 .change_queue_type = ipr_change_queue_type,
3969 .bios_param = ipr_biosparam,
3970 .can_queue = IPR_MAX_COMMANDS,
3971 .this_id = -1,
3972 .sg_tablesize = IPR_MAX_SGLIST,
3973 .max_sectors = IPR_IOA_MAX_SECTORS,
3974 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
3975 .use_clustering = ENABLE_CLUSTERING,
3976 .shost_attrs = ipr_ioa_attrs,
3977 .sdev_attrs = ipr_dev_attrs,
3978 .proc_name = IPR_NAME
3979};
3980
3981#ifdef CONFIG_PPC_PSERIES
3982static const u16 ipr_blocked_processors[] = {
3983 PV_NORTHSTAR,
3984 PV_PULSAR,
3985 PV_POWER4,
3986 PV_ICESTAR,
3987 PV_SSTAR,
3988 PV_POWER4p,
3989 PV_630,
3990 PV_630p
3991};
3992
3993/**
3994 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
3995 * @ioa_cfg: ioa cfg struct
3996 *
3997 * Adapters that use Gemstone revision < 3.1 do not work reliably on
3998 * certain pSeries hardware. This function determines if the given
3999 * adapter is in one of these confgurations or not.
4000 *
4001 * Return value:
4002 * 1 if adapter is not supported / 0 if adapter is supported
4003 **/
4004static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
4005{
4006 u8 rev_id;
4007 int i;
4008
4009 if (ioa_cfg->type == 0x5702) {
4010 if (pci_read_config_byte(ioa_cfg->pdev, PCI_REVISION_ID,
4011 &rev_id) == PCIBIOS_SUCCESSFUL) {
4012 if (rev_id < 4) {
4013 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++){
4014 if (__is_processor(ipr_blocked_processors[i]))
4015 return 1;
4016 }
4017 }
4018 }
4019 }
4020 return 0;
4021}
4022#else
4023#define ipr_invalid_adapter(ioa_cfg) 0
4024#endif
4025
4026/**
4027 * ipr_ioa_bringdown_done - IOA bring down completion.
4028 * @ipr_cmd: ipr command struct
4029 *
4030 * This function processes the completion of an adapter bring down.
4031 * It wakes any reset sleepers.
4032 *
4033 * Return value:
4034 * IPR_RC_JOB_RETURN
4035 **/
4036static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
4037{
4038 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4039
4040 ENTER;
4041 ioa_cfg->in_reset_reload = 0;
4042 ioa_cfg->reset_retries = 0;
4043 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4044 wake_up_all(&ioa_cfg->reset_wait_q);
4045
4046 spin_unlock_irq(ioa_cfg->host->host_lock);
4047 scsi_unblock_requests(ioa_cfg->host);
4048 spin_lock_irq(ioa_cfg->host->host_lock);
4049 LEAVE;
4050
4051 return IPR_RC_JOB_RETURN;
4052}
4053
4054/**
4055 * ipr_ioa_reset_done - IOA reset completion.
4056 * @ipr_cmd: ipr command struct
4057 *
4058 * This function processes the completion of an adapter reset.
4059 * It schedules any necessary mid-layer add/removes and
4060 * wakes any reset sleepers.
4061 *
4062 * Return value:
4063 * IPR_RC_JOB_RETURN
4064 **/
4065static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
4066{
4067 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4068 struct ipr_resource_entry *res;
4069 struct ipr_hostrcb *hostrcb, *temp;
4070 int i = 0;
4071
4072 ENTER;
4073 ioa_cfg->in_reset_reload = 0;
4074 ioa_cfg->allow_cmds = 1;
4075 ioa_cfg->reset_cmd = NULL;
4076
4077 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4078 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
4079 ipr_trace;
4080 break;
4081 }
4082 }
4083 schedule_work(&ioa_cfg->work_q);
4084
4085 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
4086 list_del(&hostrcb->queue);
4087 if (i++ < IPR_NUM_LOG_HCAMS)
4088 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
4089 else
4090 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
4091 }
4092
4093 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
4094
4095 ioa_cfg->reset_retries = 0;
4096 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
4097 wake_up_all(&ioa_cfg->reset_wait_q);
4098
4099 spin_unlock_irq(ioa_cfg->host->host_lock);
4100 scsi_unblock_requests(ioa_cfg->host);
4101 spin_lock_irq(ioa_cfg->host->host_lock);
4102
4103 if (!ioa_cfg->allow_cmds)
4104 scsi_block_requests(ioa_cfg->host);
4105
4106 LEAVE;
4107 return IPR_RC_JOB_RETURN;
4108}
4109
4110/**
4111 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
4112 * @supported_dev: supported device struct
4113 * @vpids: vendor product id struct
4114 *
4115 * Return value:
4116 * none
4117 **/
4118static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
4119 struct ipr_std_inq_vpids *vpids)
4120{
4121 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
4122 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
4123 supported_dev->num_records = 1;
4124 supported_dev->data_length =
4125 cpu_to_be16(sizeof(struct ipr_supported_device));
4126 supported_dev->reserved = 0;
4127}
4128
4129/**
4130 * ipr_set_supported_devs - Send Set Supported Devices for a device
4131 * @ipr_cmd: ipr command struct
4132 *
4133 * This function send a Set Supported Devices to the adapter
4134 *
4135 * Return value:
4136 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4137 **/
4138static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
4139{
4140 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4141 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
4142 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4143 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4144 struct ipr_resource_entry *res = ipr_cmd->u.res;
4145
4146 ipr_cmd->job_step = ipr_ioa_reset_done;
4147
4148 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
4149 if (!ipr_is_af_dasd_device(res))
4150 continue;
4151
4152 ipr_cmd->u.res = res;
4153 ipr_set_sup_dev_dflt(supp_dev, &res->cfgte.std_inq_data.vpids);
4154
4155 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4156 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4157 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4158
4159 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
4160 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
4161 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
4162
4163 ioadl->flags_and_data_len = cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST |
4164 sizeof(struct ipr_supported_device));
4165 ioadl->address = cpu_to_be32(ioa_cfg->vpd_cbs_dma +
4166 offsetof(struct ipr_misc_cbs, supp_dev));
4167 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4168 ioarcb->write_data_transfer_length =
4169 cpu_to_be32(sizeof(struct ipr_supported_device));
4170
4171 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
4172 IPR_SET_SUP_DEVICE_TIMEOUT);
4173
4174 ipr_cmd->job_step = ipr_set_supported_devs;
4175 return IPR_RC_JOB_RETURN;
4176 }
4177
4178 return IPR_RC_JOB_CONTINUE;
4179}
4180
4181/**
4182 * ipr_get_mode_page - Locate specified mode page
4183 * @mode_pages: mode page buffer
4184 * @page_code: page code to find
4185 * @len: minimum required length for mode page
4186 *
4187 * Return value:
4188 * pointer to mode page / NULL on failure
4189 **/
4190static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
4191 u32 page_code, u32 len)
4192{
4193 struct ipr_mode_page_hdr *mode_hdr;
4194 u32 page_length;
4195 u32 length;
4196
4197 if (!mode_pages || (mode_pages->hdr.length == 0))
4198 return NULL;
4199
4200 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
4201 mode_hdr = (struct ipr_mode_page_hdr *)
4202 (mode_pages->data + mode_pages->hdr.block_desc_len);
4203
4204 while (length) {
4205 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
4206 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
4207 return mode_hdr;
4208 break;
4209 } else {
4210 page_length = (sizeof(struct ipr_mode_page_hdr) +
4211 mode_hdr->page_length);
4212 length -= page_length;
4213 mode_hdr = (struct ipr_mode_page_hdr *)
4214 ((unsigned long)mode_hdr + page_length);
4215 }
4216 }
4217 return NULL;
4218}
4219
4220/**
4221 * ipr_check_term_power - Check for term power errors
4222 * @ioa_cfg: ioa config struct
4223 * @mode_pages: IOAFP mode pages buffer
4224 *
4225 * Check the IOAFP's mode page 28 for term power errors
4226 *
4227 * Return value:
4228 * nothing
4229 **/
4230static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
4231 struct ipr_mode_pages *mode_pages)
4232{
4233 int i;
4234 int entry_length;
4235 struct ipr_dev_bus_entry *bus;
4236 struct ipr_mode_page28 *mode_page;
4237
4238 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4239 sizeof(struct ipr_mode_page28));
4240
4241 entry_length = mode_page->entry_length;
4242
4243 bus = mode_page->bus;
4244
4245 for (i = 0; i < mode_page->num_entries; i++) {
4246 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
4247 dev_err(&ioa_cfg->pdev->dev,
4248 "Term power is absent on scsi bus %d\n",
4249 bus->res_addr.bus);
4250 }
4251
4252 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
4253 }
4254}
4255
4256/**
4257 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
4258 * @ioa_cfg: ioa config struct
4259 *
4260 * Looks through the config table checking for SES devices. If
4261 * the SES device is in the SES table indicating a maximum SCSI
4262 * bus speed, the speed is limited for the bus.
4263 *
4264 * Return value:
4265 * none
4266 **/
4267static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
4268{
4269 u32 max_xfer_rate;
4270 int i;
4271
4272 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
4273 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
4274 ioa_cfg->bus_attr[i].bus_width);
4275
4276 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
4277 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
4278 }
4279}
4280
4281/**
4282 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
4283 * @ioa_cfg: ioa config struct
4284 * @mode_pages: mode page 28 buffer
4285 *
4286 * Updates mode page 28 based on driver configuration
4287 *
4288 * Return value:
4289 * none
4290 **/
4291static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
4292 struct ipr_mode_pages *mode_pages)
4293{
4294 int i, entry_length;
4295 struct ipr_dev_bus_entry *bus;
4296 struct ipr_bus_attributes *bus_attr;
4297 struct ipr_mode_page28 *mode_page;
4298
4299 mode_page = ipr_get_mode_page(mode_pages, 0x28,
4300 sizeof(struct ipr_mode_page28));
4301
4302 entry_length = mode_page->entry_length;
4303
4304 /* Loop for each device bus entry */
4305 for (i = 0, bus = mode_page->bus;
4306 i < mode_page->num_entries;
4307 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
4308 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
4309 dev_err(&ioa_cfg->pdev->dev,
4310 "Invalid resource address reported: 0x%08X\n",
4311 IPR_GET_PHYS_LOC(bus->res_addr));
4312 continue;
4313 }
4314
4315 bus_attr = &ioa_cfg->bus_attr[i];
4316 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
4317 bus->bus_width = bus_attr->bus_width;
4318 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
4319 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
4320 if (bus_attr->qas_enabled)
4321 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
4322 else
4323 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
4324 }
4325}
4326
4327/**
4328 * ipr_build_mode_select - Build a mode select command
4329 * @ipr_cmd: ipr command struct
4330 * @res_handle: resource handle to send command to
4331 * @parm: Byte 2 of Mode Sense command
4332 * @dma_addr: DMA buffer address
4333 * @xfer_len: data transfer length
4334 *
4335 * Return value:
4336 * none
4337 **/
4338static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
4339 __be32 res_handle, u8 parm, u32 dma_addr,
4340 u8 xfer_len)
4341{
4342 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4343 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4344
4345 ioarcb->res_handle = res_handle;
4346 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4347 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
4348 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
4349 ioarcb->cmd_pkt.cdb[1] = parm;
4350 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4351
4352 ioadl->flags_and_data_len =
4353 cpu_to_be32(IPR_IOADL_FLAGS_WRITE_LAST | xfer_len);
4354 ioadl->address = cpu_to_be32(dma_addr);
4355 ioarcb->write_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4356 ioarcb->write_data_transfer_length = cpu_to_be32(xfer_len);
4357}
4358
4359/**
4360 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
4361 * @ipr_cmd: ipr command struct
4362 *
4363 * This function sets up the SCSI bus attributes and sends
4364 * a Mode Select for Page 28 to activate them.
4365 *
4366 * Return value:
4367 * IPR_RC_JOB_RETURN
4368 **/
4369static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
4370{
4371 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4372 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
4373 int length;
4374
4375 ENTER;
4376 if (ioa_cfg->saved_mode_pages) {
4377 memcpy(mode_pages, ioa_cfg->saved_mode_pages,
4378 ioa_cfg->saved_mode_page_len);
4379 length = ioa_cfg->saved_mode_page_len;
4380 } else {
4381 ipr_scsi_bus_speed_limit(ioa_cfg);
4382 ipr_check_term_power(ioa_cfg, mode_pages);
4383 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
4384 length = mode_pages->hdr.length + 1;
4385 mode_pages->hdr.length = 0;
4386 }
4387
4388 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
4389 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
4390 length);
4391
4392 ipr_cmd->job_step = ipr_set_supported_devs;
4393 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
4394 struct ipr_resource_entry, queue);
4395
4396 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4397
4398 LEAVE;
4399 return IPR_RC_JOB_RETURN;
4400}
4401
4402/**
4403 * ipr_build_mode_sense - Builds a mode sense command
4404 * @ipr_cmd: ipr command struct
4405 * @res: resource entry struct
4406 * @parm: Byte 2 of mode sense command
4407 * @dma_addr: DMA address of mode sense buffer
4408 * @xfer_len: Size of DMA buffer
4409 *
4410 * Return value:
4411 * none
4412 **/
4413static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
4414 __be32 res_handle,
4415 u8 parm, u32 dma_addr, u8 xfer_len)
4416{
4417 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4418 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4419
4420 ioarcb->res_handle = res_handle;
4421 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
4422 ioarcb->cmd_pkt.cdb[2] = parm;
4423 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4424 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4425
4426 ioadl->flags_and_data_len =
4427 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4428 ioadl->address = cpu_to_be32(dma_addr);
4429 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4430 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4431}
4432
4433/**
4434 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
4435 * @ipr_cmd: ipr command struct
4436 *
4437 * This function send a Page 28 mode sense to the IOA to
4438 * retrieve SCSI bus attributes.
4439 *
4440 * Return value:
4441 * IPR_RC_JOB_RETURN
4442 **/
4443static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
4444{
4445 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4446
4447 ENTER;
4448 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
4449 0x28, ioa_cfg->vpd_cbs_dma +
4450 offsetof(struct ipr_misc_cbs, mode_pages),
4451 sizeof(struct ipr_mode_pages));
4452
4453 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
4454
4455 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4456
4457 LEAVE;
4458 return IPR_RC_JOB_RETURN;
4459}
4460
4461/**
4462 * ipr_init_res_table - Initialize the resource table
4463 * @ipr_cmd: ipr command struct
4464 *
4465 * This function looks through the existing resource table, comparing
4466 * it with the config table. This function will take care of old/new
4467 * devices and schedule adding/removing them from the mid-layer
4468 * as appropriate.
4469 *
4470 * Return value:
4471 * IPR_RC_JOB_CONTINUE
4472 **/
4473static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
4474{
4475 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4476 struct ipr_resource_entry *res, *temp;
4477 struct ipr_config_table_entry *cfgte;
4478 int found, i;
4479 LIST_HEAD(old_res);
4480
4481 ENTER;
4482 if (ioa_cfg->cfg_table->hdr.flags & IPR_UCODE_DOWNLOAD_REQ)
4483 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
4484
4485 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
4486 list_move_tail(&res->queue, &old_res);
4487
4488 for (i = 0; i < ioa_cfg->cfg_table->hdr.num_entries; i++) {
4489 cfgte = &ioa_cfg->cfg_table->dev[i];
4490 found = 0;
4491
4492 list_for_each_entry_safe(res, temp, &old_res, queue) {
4493 if (!memcmp(&res->cfgte.res_addr,
4494 &cfgte->res_addr, sizeof(cfgte->res_addr))) {
4495 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4496 found = 1;
4497 break;
4498 }
4499 }
4500
4501 if (!found) {
4502 if (list_empty(&ioa_cfg->free_res_q)) {
4503 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
4504 break;
4505 }
4506
4507 found = 1;
4508 res = list_entry(ioa_cfg->free_res_q.next,
4509 struct ipr_resource_entry, queue);
4510 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4511 ipr_init_res_entry(res);
4512 res->add_to_ml = 1;
4513 }
4514
4515 if (found)
4516 memcpy(&res->cfgte, cfgte, sizeof(struct ipr_config_table_entry));
4517 }
4518
4519 list_for_each_entry_safe(res, temp, &old_res, queue) {
4520 if (res->sdev) {
4521 res->del_from_ml = 1;
4522 res->sdev->hostdata = NULL;
4523 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
4524 } else {
4525 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
4526 }
4527 }
4528
4529 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
4530
4531 LEAVE;
4532 return IPR_RC_JOB_CONTINUE;
4533}
4534
4535/**
4536 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
4537 * @ipr_cmd: ipr command struct
4538 *
4539 * This function sends a Query IOA Configuration command
4540 * to the adapter to retrieve the IOA configuration table.
4541 *
4542 * Return value:
4543 * IPR_RC_JOB_RETURN
4544 **/
4545static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
4546{
4547 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4548 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4549 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4550 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
4551
4552 ENTER;
4553 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
4554 ucode_vpd->major_release, ucode_vpd->card_type,
4555 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
4556 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4557 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4558
4559 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
4560 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_config_table) >> 8) & 0xff;
4561 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_config_table) & 0xff;
4562
4563 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4564 ioarcb->read_data_transfer_length =
4565 cpu_to_be32(sizeof(struct ipr_config_table));
4566
4567 ioadl->address = cpu_to_be32(ioa_cfg->cfg_table_dma);
4568 ioadl->flags_and_data_len =
4569 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | sizeof(struct ipr_config_table));
4570
4571 ipr_cmd->job_step = ipr_init_res_table;
4572
4573 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4574
4575 LEAVE;
4576 return IPR_RC_JOB_RETURN;
4577}
4578
4579/**
4580 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
4581 * @ipr_cmd: ipr command struct
4582 *
4583 * This utility function sends an inquiry to the adapter.
4584 *
4585 * Return value:
4586 * none
4587 **/
4588static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
4589 u32 dma_addr, u8 xfer_len)
4590{
4591 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4592 struct ipr_ioadl_desc *ioadl = ipr_cmd->ioadl;
4593
4594 ENTER;
4595 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
4596 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4597
4598 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
4599 ioarcb->cmd_pkt.cdb[1] = flags;
4600 ioarcb->cmd_pkt.cdb[2] = page;
4601 ioarcb->cmd_pkt.cdb[4] = xfer_len;
4602
4603 ioarcb->read_ioadl_len = cpu_to_be32(sizeof(struct ipr_ioadl_desc));
4604 ioarcb->read_data_transfer_length = cpu_to_be32(xfer_len);
4605
4606 ioadl->address = cpu_to_be32(dma_addr);
4607 ioadl->flags_and_data_len =
4608 cpu_to_be32(IPR_IOADL_FLAGS_READ_LAST | xfer_len);
4609
4610 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4611 LEAVE;
4612}
4613
4614/**
4615 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
4616 * @ipr_cmd: ipr command struct
4617 *
4618 * This function sends a Page 3 inquiry to the adapter
4619 * to retrieve software VPD information.
4620 *
4621 * Return value:
4622 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4623 **/
4624static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
4625{
4626 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4627 char type[5];
4628
4629 ENTER;
4630
4631 /* Grab the type out of the VPD and store it away */
4632 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
4633 type[4] = '\0';
4634 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
4635
4636 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
4637
4638 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
4639 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
4640 sizeof(struct ipr_inquiry_page3));
4641
4642 LEAVE;
4643 return IPR_RC_JOB_RETURN;
4644}
4645
4646/**
4647 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
4648 * @ipr_cmd: ipr command struct
4649 *
4650 * This function sends a standard inquiry to the adapter.
4651 *
4652 * Return value:
4653 * IPR_RC_JOB_RETURN
4654 **/
4655static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
4656{
4657 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4658
4659 ENTER;
4660 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
4661
4662 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
4663 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
4664 sizeof(struct ipr_ioa_vpd));
4665
4666 LEAVE;
4667 return IPR_RC_JOB_RETURN;
4668}
4669
4670/**
4671 * ipr_ioafp_indentify_hrrq - Send Identify Host RRQ.
4672 * @ipr_cmd: ipr command struct
4673 *
4674 * This function send an Identify Host Request Response Queue
4675 * command to establish the HRRQ with the adapter.
4676 *
4677 * Return value:
4678 * IPR_RC_JOB_RETURN
4679 **/
4680static int ipr_ioafp_indentify_hrrq(struct ipr_cmnd *ipr_cmd)
4681{
4682 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4683 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
4684
4685 ENTER;
4686 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
4687
4688 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
4689 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
4690
4691 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
4692 ioarcb->cmd_pkt.cdb[2] =
4693 ((u32) ioa_cfg->host_rrq_dma >> 24) & 0xff;
4694 ioarcb->cmd_pkt.cdb[3] =
4695 ((u32) ioa_cfg->host_rrq_dma >> 16) & 0xff;
4696 ioarcb->cmd_pkt.cdb[4] =
4697 ((u32) ioa_cfg->host_rrq_dma >> 8) & 0xff;
4698 ioarcb->cmd_pkt.cdb[5] =
4699 ((u32) ioa_cfg->host_rrq_dma) & 0xff;
4700 ioarcb->cmd_pkt.cdb[7] =
4701 ((sizeof(u32) * IPR_NUM_CMD_BLKS) >> 8) & 0xff;
4702 ioarcb->cmd_pkt.cdb[8] =
4703 (sizeof(u32) * IPR_NUM_CMD_BLKS) & 0xff;
4704
4705 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
4706
4707 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
4708
4709 LEAVE;
4710 return IPR_RC_JOB_RETURN;
4711}
4712
4713/**
4714 * ipr_reset_timer_done - Adapter reset timer function
4715 * @ipr_cmd: ipr command struct
4716 *
4717 * Description: This function is used in adapter reset processing
4718 * for timing events. If the reset_cmd pointer in the IOA
4719 * config struct is not this adapter's we are doing nested
4720 * resets and fail_all_ops will take care of freeing the
4721 * command block.
4722 *
4723 * Return value:
4724 * none
4725 **/
4726static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
4727{
4728 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4729 unsigned long lock_flags = 0;
4730
4731 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4732
4733 if (ioa_cfg->reset_cmd == ipr_cmd) {
4734 list_del(&ipr_cmd->queue);
4735 ipr_cmd->done(ipr_cmd);
4736 }
4737
4738 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4739}
4740
4741/**
4742 * ipr_reset_start_timer - Start a timer for adapter reset job
4743 * @ipr_cmd: ipr command struct
4744 * @timeout: timeout value
4745 *
4746 * Description: This function is used in adapter reset processing
4747 * for timing events. If the reset_cmd pointer in the IOA
4748 * config struct is not this adapter's we are doing nested
4749 * resets and fail_all_ops will take care of freeing the
4750 * command block.
4751 *
4752 * Return value:
4753 * none
4754 **/
4755static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
4756 unsigned long timeout)
4757{
4758 list_add_tail(&ipr_cmd->queue, &ipr_cmd->ioa_cfg->pending_q);
4759 ipr_cmd->done = ipr_reset_ioa_job;
4760
4761 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4762 ipr_cmd->timer.expires = jiffies + timeout;
4763 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
4764 add_timer(&ipr_cmd->timer);
4765}
4766
4767/**
4768 * ipr_init_ioa_mem - Initialize ioa_cfg control block
4769 * @ioa_cfg: ioa cfg struct
4770 *
4771 * Return value:
4772 * nothing
4773 **/
4774static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
4775{
4776 memset(ioa_cfg->host_rrq, 0, sizeof(u32) * IPR_NUM_CMD_BLKS);
4777
4778 /* Initialize Host RRQ pointers */
4779 ioa_cfg->hrrq_start = ioa_cfg->host_rrq;
4780 ioa_cfg->hrrq_end = &ioa_cfg->host_rrq[IPR_NUM_CMD_BLKS - 1];
4781 ioa_cfg->hrrq_curr = ioa_cfg->hrrq_start;
4782 ioa_cfg->toggle_bit = 1;
4783
4784 /* Zero out config table */
4785 memset(ioa_cfg->cfg_table, 0, sizeof(struct ipr_config_table));
4786}
4787
4788/**
4789 * ipr_reset_enable_ioa - Enable the IOA following a reset.
4790 * @ipr_cmd: ipr command struct
4791 *
4792 * This function reinitializes some control blocks and
4793 * enables destructive diagnostics on the adapter.
4794 *
4795 * Return value:
4796 * IPR_RC_JOB_RETURN
4797 **/
4798static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
4799{
4800 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4801 volatile u32 int_reg;
4802
4803 ENTER;
4804 ipr_cmd->job_step = ipr_ioafp_indentify_hrrq;
4805 ipr_init_ioa_mem(ioa_cfg);
4806
4807 ioa_cfg->allow_interrupts = 1;
4808 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
4809
4810 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
4811 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
4812 ioa_cfg->regs.clr_interrupt_mask_reg);
4813 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4814 return IPR_RC_JOB_CONTINUE;
4815 }
4816
4817 /* Enable destructive diagnostics on IOA */
4818 writel(IPR_DOORBELL, ioa_cfg->regs.set_uproc_interrupt_reg);
4819
4820 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg);
4821 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
4822
4823 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
4824
4825 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
4826 ipr_cmd->timer.expires = jiffies + (ipr_transop_timeout * HZ);
4827 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
4828 ipr_cmd->done = ipr_reset_ioa_job;
4829 add_timer(&ipr_cmd->timer);
4830 list_add_tail(&ipr_cmd->queue, &ioa_cfg->pending_q);
4831
4832 LEAVE;
4833 return IPR_RC_JOB_RETURN;
4834}
4835
4836/**
4837 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
4838 * @ipr_cmd: ipr command struct
4839 *
4840 * This function is invoked when an adapter dump has run out
4841 * of processing time.
4842 *
4843 * Return value:
4844 * IPR_RC_JOB_CONTINUE
4845 **/
4846static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
4847{
4848 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4849
4850 if (ioa_cfg->sdt_state == GET_DUMP)
4851 ioa_cfg->sdt_state = ABORT_DUMP;
4852
4853 ipr_cmd->job_step = ipr_reset_alert;
4854
4855 return IPR_RC_JOB_CONTINUE;
4856}
4857
4858/**
4859 * ipr_unit_check_no_data - Log a unit check/no data error log
4860 * @ioa_cfg: ioa config struct
4861 *
4862 * Logs an error indicating the adapter unit checked, but for some
4863 * reason, we were unable to fetch the unit check buffer.
4864 *
4865 * Return value:
4866 * nothing
4867 **/
4868static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
4869{
4870 ioa_cfg->errors_logged++;
4871 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
4872}
4873
4874/**
4875 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
4876 * @ioa_cfg: ioa config struct
4877 *
4878 * Fetches the unit check buffer from the adapter by clocking the data
4879 * through the mailbox register.
4880 *
4881 * Return value:
4882 * nothing
4883 **/
4884static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
4885{
4886 unsigned long mailbox;
4887 struct ipr_hostrcb *hostrcb;
4888 struct ipr_uc_sdt sdt;
4889 int rc, length;
4890
4891 mailbox = readl(ioa_cfg->ioa_mailbox);
4892
4893 if (!ipr_sdt_is_fmt2(mailbox)) {
4894 ipr_unit_check_no_data(ioa_cfg);
4895 return;
4896 }
4897
4898 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
4899 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
4900 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
4901
4902 if (rc || (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE) ||
4903 !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY)) {
4904 ipr_unit_check_no_data(ioa_cfg);
4905 return;
4906 }
4907
4908 /* Find length of the first sdt entry (UC buffer) */
4909 length = (be32_to_cpu(sdt.entry[0].end_offset) -
4910 be32_to_cpu(sdt.entry[0].bar_str_offset)) & IPR_FMT2_MBX_ADDR_MASK;
4911
4912 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
4913 struct ipr_hostrcb, queue);
4914 list_del(&hostrcb->queue);
4915 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
4916
4917 rc = ipr_get_ldump_data_section(ioa_cfg,
4918 be32_to_cpu(sdt.entry[0].bar_str_offset),
4919 (__be32 *)&hostrcb->hcam,
4920 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
4921
4922 if (!rc)
4923 ipr_handle_log_data(ioa_cfg, hostrcb);
4924 else
4925 ipr_unit_check_no_data(ioa_cfg);
4926
4927 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4928}
4929
4930/**
4931 * ipr_reset_restore_cfg_space - Restore PCI config space.
4932 * @ipr_cmd: ipr command struct
4933 *
4934 * Description: This function restores the saved PCI config space of
4935 * the adapter, fails all outstanding ops back to the callers, and
4936 * fetches the dump/unit check if applicable to this reset.
4937 *
4938 * Return value:
4939 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4940 **/
4941static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
4942{
4943 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4944 int rc;
4945
4946 ENTER;
4947 rc = pci_restore_state(ioa_cfg->pdev);
4948
4949 if (rc != PCIBIOS_SUCCESSFUL) {
4950 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4951 return IPR_RC_JOB_CONTINUE;
4952 }
4953
4954 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
4955 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
4956 return IPR_RC_JOB_CONTINUE;
4957 }
4958
4959 ipr_fail_all_ops(ioa_cfg);
4960
4961 if (ioa_cfg->ioa_unit_checked) {
4962 ioa_cfg->ioa_unit_checked = 0;
4963 ipr_get_unit_check_buffer(ioa_cfg);
4964 ipr_cmd->job_step = ipr_reset_alert;
4965 ipr_reset_start_timer(ipr_cmd, 0);
4966 return IPR_RC_JOB_RETURN;
4967 }
4968
4969 if (ioa_cfg->in_ioa_bringdown) {
4970 ipr_cmd->job_step = ipr_ioa_bringdown_done;
4971 } else {
4972 ipr_cmd->job_step = ipr_reset_enable_ioa;
4973
4974 if (GET_DUMP == ioa_cfg->sdt_state) {
4975 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_TIMEOUT);
4976 ipr_cmd->job_step = ipr_reset_wait_for_dump;
4977 schedule_work(&ioa_cfg->work_q);
4978 return IPR_RC_JOB_RETURN;
4979 }
4980 }
4981
4982 ENTER;
4983 return IPR_RC_JOB_CONTINUE;
4984}
4985
4986/**
4987 * ipr_reset_start_bist - Run BIST on the adapter.
4988 * @ipr_cmd: ipr command struct
4989 *
4990 * Description: This function runs BIST on the adapter, then delays 2 seconds.
4991 *
4992 * Return value:
4993 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
4994 **/
4995static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
4996{
4997 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
4998 int rc;
4999
5000 ENTER;
5001 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
5002
5003 if (rc != PCIBIOS_SUCCESSFUL) {
5004 ipr_cmd->ioasa.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
5005 rc = IPR_RC_JOB_CONTINUE;
5006 } else {
5007 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
5008 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
5009 rc = IPR_RC_JOB_RETURN;
5010 }
5011
5012 LEAVE;
5013 return rc;
5014}
5015
5016/**
5017 * ipr_reset_allowed - Query whether or not IOA can be reset
5018 * @ioa_cfg: ioa config struct
5019 *
5020 * Return value:
5021 * 0 if reset not allowed / non-zero if reset is allowed
5022 **/
5023static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
5024{
5025 volatile u32 temp_reg;
5026
5027 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5028 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
5029}
5030
5031/**
5032 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
5033 * @ipr_cmd: ipr command struct
5034 *
5035 * Description: This function waits for adapter permission to run BIST,
5036 * then runs BIST. If the adapter does not give permission after a
5037 * reasonable time, we will reset the adapter anyway. The impact of
5038 * resetting the adapter without warning the adapter is the risk of
5039 * losing the persistent error log on the adapter. If the adapter is
5040 * reset while it is writing to the flash on the adapter, the flash
5041 * segment will have bad ECC and be zeroed.
5042 *
5043 * Return value:
5044 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5045 **/
5046static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
5047{
5048 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5049 int rc = IPR_RC_JOB_RETURN;
5050
5051 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
5052 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
5053 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5054 } else {
5055 ipr_cmd->job_step = ipr_reset_start_bist;
5056 rc = IPR_RC_JOB_CONTINUE;
5057 }
5058
5059 return rc;
5060}
5061
5062/**
5063 * ipr_reset_alert_part2 - Alert the adapter of a pending reset
5064 * @ipr_cmd: ipr command struct
5065 *
5066 * Description: This function alerts the adapter that it will be reset.
5067 * If memory space is not currently enabled, proceed directly
5068 * to running BIST on the adapter. The timer must always be started
5069 * so we guarantee we do not run BIST from ipr_isr.
5070 *
5071 * Return value:
5072 * IPR_RC_JOB_RETURN
5073 **/
5074static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
5075{
5076 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5077 u16 cmd_reg;
5078 int rc;
5079
5080 ENTER;
5081 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
5082
5083 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
5084 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5085 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg);
5086 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
5087 } else {
5088 ipr_cmd->job_step = ipr_reset_start_bist;
5089 }
5090
5091 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
5092 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
5093
5094 LEAVE;
5095 return IPR_RC_JOB_RETURN;
5096}
5097
5098/**
5099 * ipr_reset_ucode_download_done - Microcode download completion
5100 * @ipr_cmd: ipr command struct
5101 *
5102 * Description: This function unmaps the microcode download buffer.
5103 *
5104 * Return value:
5105 * IPR_RC_JOB_CONTINUE
5106 **/
5107static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
5108{
5109 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5110 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5111
5112 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
5113 sglist->num_sg, DMA_TO_DEVICE);
5114
5115 ipr_cmd->job_step = ipr_reset_alert;
5116 return IPR_RC_JOB_CONTINUE;
5117}
5118
5119/**
5120 * ipr_reset_ucode_download - Download microcode to the adapter
5121 * @ipr_cmd: ipr command struct
5122 *
5123 * Description: This function checks to see if it there is microcode
5124 * to download to the adapter. If there is, a download is performed.
5125 *
5126 * Return value:
5127 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5128 **/
5129static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
5130{
5131 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5132 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
5133
5134 ENTER;
5135 ipr_cmd->job_step = ipr_reset_alert;
5136
5137 if (!sglist)
5138 return IPR_RC_JOB_CONTINUE;
5139
5140 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5141 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
5142 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
5143 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
5144 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
5145 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
5146 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
5147
5148 if (ipr_map_ucode_buffer(ipr_cmd, sglist, sglist->buffer_len)) {
5149 dev_err(&ioa_cfg->pdev->dev,
5150 "Failed to map microcode download buffer\n");
5151 return IPR_RC_JOB_CONTINUE;
5152 }
5153
5154 ipr_cmd->job_step = ipr_reset_ucode_download_done;
5155
5156 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
5157 IPR_WRITE_BUFFER_TIMEOUT);
5158
5159 LEAVE;
5160 return IPR_RC_JOB_RETURN;
5161}
5162
5163/**
5164 * ipr_reset_shutdown_ioa - Shutdown the adapter
5165 * @ipr_cmd: ipr command struct
5166 *
5167 * Description: This function issues an adapter shutdown of the
5168 * specified type to the specified adapter as part of the
5169 * adapter reset job.
5170 *
5171 * Return value:
5172 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
5173 **/
5174static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
5175{
5176 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5177 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
5178 unsigned long timeout;
5179 int rc = IPR_RC_JOB_CONTINUE;
5180
5181 ENTER;
5182 if (shutdown_type != IPR_SHUTDOWN_NONE && !ioa_cfg->ioa_is_dead) {
5183 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
5184 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
5185 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
5186 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
5187
5188 if (shutdown_type == IPR_SHUTDOWN_ABBREV)
5189 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
5190 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
5191 timeout = IPR_INTERNAL_TIMEOUT;
5192 else
5193 timeout = IPR_SHUTDOWN_TIMEOUT;
5194
5195 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
5196
5197 rc = IPR_RC_JOB_RETURN;
5198 ipr_cmd->job_step = ipr_reset_ucode_download;
5199 } else
5200 ipr_cmd->job_step = ipr_reset_alert;
5201
5202 LEAVE;
5203 return rc;
5204}
5205
5206/**
5207 * ipr_reset_ioa_job - Adapter reset job
5208 * @ipr_cmd: ipr command struct
5209 *
5210 * Description: This function is the job router for the adapter reset job.
5211 *
5212 * Return value:
5213 * none
5214 **/
5215static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
5216{
5217 u32 rc, ioasc;
5218 unsigned long scratch = ipr_cmd->u.scratch;
5219 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5220
5221 do {
5222 ioasc = be32_to_cpu(ipr_cmd->ioasa.ioasc);
5223
5224 if (ioa_cfg->reset_cmd != ipr_cmd) {
5225 /*
5226 * We are doing nested adapter resets and this is
5227 * not the current reset job.
5228 */
5229 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5230 return;
5231 }
5232
5233 if (IPR_IOASC_SENSE_KEY(ioasc)) {
5234 dev_err(&ioa_cfg->pdev->dev,
5235 "0x%02X failed with IOASC: 0x%08X\n",
5236 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
5237
5238 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5239 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5240 return;
5241 }
5242
5243 ipr_reinit_ipr_cmnd(ipr_cmd);
5244 ipr_cmd->u.scratch = scratch;
5245 rc = ipr_cmd->job_step(ipr_cmd);
5246 } while(rc == IPR_RC_JOB_CONTINUE);
5247}
5248
5249/**
5250 * _ipr_initiate_ioa_reset - Initiate an adapter reset
5251 * @ioa_cfg: ioa config struct
5252 * @job_step: first job step of reset job
5253 * @shutdown_type: shutdown type
5254 *
5255 * Description: This function will initiate the reset of the given adapter
5256 * starting at the selected job step.
5257 * If the caller needs to wait on the completion of the reset,
5258 * the caller must sleep on the reset_wait_q.
5259 *
5260 * Return value:
5261 * none
5262 **/
5263static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5264 int (*job_step) (struct ipr_cmnd *),
5265 enum ipr_shutdown_type shutdown_type)
5266{
5267 struct ipr_cmnd *ipr_cmd;
5268
5269 ioa_cfg->in_reset_reload = 1;
5270 ioa_cfg->allow_cmds = 0;
5271 scsi_block_requests(ioa_cfg->host);
5272
5273 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5274 ioa_cfg->reset_cmd = ipr_cmd;
5275 ipr_cmd->job_step = job_step;
5276 ipr_cmd->u.shutdown_type = shutdown_type;
5277
5278 ipr_reset_ioa_job(ipr_cmd);
5279}
5280
5281/**
5282 * ipr_initiate_ioa_reset - Initiate an adapter reset
5283 * @ioa_cfg: ioa config struct
5284 * @shutdown_type: shutdown type
5285 *
5286 * Description: This function will initiate the reset of the given adapter.
5287 * If the caller needs to wait on the completion of the reset,
5288 * the caller must sleep on the reset_wait_q.
5289 *
5290 * Return value:
5291 * none
5292 **/
5293static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
5294 enum ipr_shutdown_type shutdown_type)
5295{
5296 if (ioa_cfg->ioa_is_dead)
5297 return;
5298
5299 if (ioa_cfg->in_reset_reload && ioa_cfg->sdt_state == GET_DUMP)
5300 ioa_cfg->sdt_state = ABORT_DUMP;
5301
5302 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
5303 dev_err(&ioa_cfg->pdev->dev,
5304 "IOA taken offline - error recovery failed\n");
5305
5306 ioa_cfg->reset_retries = 0;
5307 ioa_cfg->ioa_is_dead = 1;
5308
5309 if (ioa_cfg->in_ioa_bringdown) {
5310 ioa_cfg->reset_cmd = NULL;
5311 ioa_cfg->in_reset_reload = 0;
5312 ipr_fail_all_ops(ioa_cfg);
5313 wake_up_all(&ioa_cfg->reset_wait_q);
5314
5315 spin_unlock_irq(ioa_cfg->host->host_lock);
5316 scsi_unblock_requests(ioa_cfg->host);
5317 spin_lock_irq(ioa_cfg->host->host_lock);
5318 return;
5319 } else {
5320 ioa_cfg->in_ioa_bringdown = 1;
5321 shutdown_type = IPR_SHUTDOWN_NONE;
5322 }
5323 }
5324
5325 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
5326 shutdown_type);
5327}
5328
5329/**
5330 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
5331 * @ioa_cfg: ioa cfg struct
5332 *
5333 * Description: This is the second phase of adapter intialization
5334 * This function takes care of initilizing the adapter to the point
5335 * where it can accept new commands.
5336
5337 * Return value:
5338 * 0 on sucess / -EIO on failure
5339 **/
5340static int __devinit ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
5341{
5342 int rc = 0;
5343 unsigned long host_lock_flags = 0;
5344
5345 ENTER;
5346 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5347 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
5348 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa, IPR_SHUTDOWN_NONE);
5349
5350 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5351 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5352 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5353
5354 if (ioa_cfg->ioa_is_dead) {
5355 rc = -EIO;
5356 } else if (ipr_invalid_adapter(ioa_cfg)) {
5357 if (!ipr_testmode)
5358 rc = -EIO;
5359
5360 dev_err(&ioa_cfg->pdev->dev,
5361 "Adapter not supported in this hardware configuration.\n");
5362 }
5363
5364 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5365
5366 LEAVE;
5367 return rc;
5368}
5369
5370/**
5371 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
5372 * @ioa_cfg: ioa config struct
5373 *
5374 * Return value:
5375 * none
5376 **/
5377static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5378{
5379 int i;
5380
5381 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5382 if (ioa_cfg->ipr_cmnd_list[i])
5383 pci_pool_free(ioa_cfg->ipr_cmd_pool,
5384 ioa_cfg->ipr_cmnd_list[i],
5385 ioa_cfg->ipr_cmnd_list_dma[i]);
5386
5387 ioa_cfg->ipr_cmnd_list[i] = NULL;
5388 }
5389
5390 if (ioa_cfg->ipr_cmd_pool)
5391 pci_pool_destroy (ioa_cfg->ipr_cmd_pool);
5392
5393 ioa_cfg->ipr_cmd_pool = NULL;
5394}
5395
5396/**
5397 * ipr_free_mem - Frees memory allocated for an adapter
5398 * @ioa_cfg: ioa cfg struct
5399 *
5400 * Return value:
5401 * nothing
5402 **/
5403static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
5404{
5405 int i;
5406
5407 kfree(ioa_cfg->res_entries);
5408 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
5409 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5410 ipr_free_cmd_blks(ioa_cfg);
5411 pci_free_consistent(ioa_cfg->pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5412 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5413 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_config_table),
5414 ioa_cfg->cfg_table,
5415 ioa_cfg->cfg_table_dma);
5416
5417 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5418 pci_free_consistent(ioa_cfg->pdev,
5419 sizeof(struct ipr_hostrcb),
5420 ioa_cfg->hostrcb[i],
5421 ioa_cfg->hostrcb_dma[i]);
5422 }
5423
5424 ipr_free_dump(ioa_cfg);
5425 kfree(ioa_cfg->saved_mode_pages);
5426 kfree(ioa_cfg->trace);
5427}
5428
5429/**
5430 * ipr_free_all_resources - Free all allocated resources for an adapter.
5431 * @ipr_cmd: ipr command struct
5432 *
5433 * This function frees all allocated resources for the
5434 * specified adapter.
5435 *
5436 * Return value:
5437 * none
5438 **/
5439static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
5440{
5441 struct pci_dev *pdev = ioa_cfg->pdev;
5442
5443 ENTER;
5444 free_irq(pdev->irq, ioa_cfg);
5445 iounmap(ioa_cfg->hdw_dma_regs);
5446 pci_release_regions(pdev);
5447 ipr_free_mem(ioa_cfg);
5448 scsi_host_put(ioa_cfg->host);
5449 pci_disable_device(pdev);
5450 LEAVE;
5451}
5452
5453/**
5454 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
5455 * @ioa_cfg: ioa config struct
5456 *
5457 * Return value:
5458 * 0 on success / -ENOMEM on allocation failure
5459 **/
5460static int __devinit ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
5461{
5462 struct ipr_cmnd *ipr_cmd;
5463 struct ipr_ioarcb *ioarcb;
5464 dma_addr_t dma_addr;
5465 int i;
5466
5467 ioa_cfg->ipr_cmd_pool = pci_pool_create (IPR_NAME, ioa_cfg->pdev,
5468 sizeof(struct ipr_cmnd), 8, 0);
5469
5470 if (!ioa_cfg->ipr_cmd_pool)
5471 return -ENOMEM;
5472
5473 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
5474 ipr_cmd = pci_pool_alloc (ioa_cfg->ipr_cmd_pool, SLAB_KERNEL, &dma_addr);
5475
5476 if (!ipr_cmd) {
5477 ipr_free_cmd_blks(ioa_cfg);
5478 return -ENOMEM;
5479 }
5480
5481 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
5482 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
5483 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
5484
5485 ioarcb = &ipr_cmd->ioarcb;
5486 ioarcb->ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
5487 ioarcb->host_response_handle = cpu_to_be32(i << 2);
5488 ioarcb->write_ioadl_addr =
5489 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioadl));
5490 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5491 ioarcb->ioasa_host_pci_addr =
5492 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, ioasa));
5493 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
5494 ipr_cmd->cmd_index = i;
5495 ipr_cmd->ioa_cfg = ioa_cfg;
5496 ipr_cmd->sense_buffer_dma = dma_addr +
5497 offsetof(struct ipr_cmnd, sense_buffer);
5498
5499 list_add_tail(&ipr_cmd->queue, &ioa_cfg->free_q);
5500 }
5501
5502 return 0;
5503}
5504
5505/**
5506 * ipr_alloc_mem - Allocate memory for an adapter
5507 * @ioa_cfg: ioa config struct
5508 *
5509 * Return value:
5510 * 0 on success / non-zero for error
5511 **/
5512static int __devinit ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
5513{
5514 struct pci_dev *pdev = ioa_cfg->pdev;
5515 int i, rc = -ENOMEM;
5516
5517 ENTER;
5518 ioa_cfg->res_entries = kmalloc(sizeof(struct ipr_resource_entry) *
5519 IPR_MAX_PHYSICAL_DEVS, GFP_KERNEL);
5520
5521 if (!ioa_cfg->res_entries)
5522 goto out;
5523
5524 memset(ioa_cfg->res_entries, 0,
5525 sizeof(struct ipr_resource_entry) * IPR_MAX_PHYSICAL_DEVS);
5526
5527 for (i = 0; i < IPR_MAX_PHYSICAL_DEVS; i++)
5528 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
5529
5530 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
5531 sizeof(struct ipr_misc_cbs),
5532 &ioa_cfg->vpd_cbs_dma);
5533
5534 if (!ioa_cfg->vpd_cbs)
5535 goto out_free_res_entries;
5536
5537 if (ipr_alloc_cmd_blks(ioa_cfg))
5538 goto out_free_vpd_cbs;
5539
5540 ioa_cfg->host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
5541 sizeof(u32) * IPR_NUM_CMD_BLKS,
5542 &ioa_cfg->host_rrq_dma);
5543
5544 if (!ioa_cfg->host_rrq)
5545 goto out_ipr_free_cmd_blocks;
5546
5547 ioa_cfg->cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
5548 sizeof(struct ipr_config_table),
5549 &ioa_cfg->cfg_table_dma);
5550
5551 if (!ioa_cfg->cfg_table)
5552 goto out_free_host_rrq;
5553
5554 for (i = 0; i < IPR_NUM_HCAMS; i++) {
5555 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
5556 sizeof(struct ipr_hostrcb),
5557 &ioa_cfg->hostrcb_dma[i]);
5558
5559 if (!ioa_cfg->hostrcb[i])
5560 goto out_free_hostrcb_dma;
5561
5562 ioa_cfg->hostrcb[i]->hostrcb_dma =
5563 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
5564 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
5565 }
5566
5567 ioa_cfg->trace = kmalloc(sizeof(struct ipr_trace_entry) *
5568 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
5569
5570 if (!ioa_cfg->trace)
5571 goto out_free_hostrcb_dma;
5572
5573 memset(ioa_cfg->trace, 0,
5574 sizeof(struct ipr_trace_entry) * IPR_NUM_TRACE_ENTRIES);
5575
5576 rc = 0;
5577out:
5578 LEAVE;
5579 return rc;
5580
5581out_free_hostrcb_dma:
5582 while (i-- > 0) {
5583 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
5584 ioa_cfg->hostrcb[i],
5585 ioa_cfg->hostrcb_dma[i]);
5586 }
5587 pci_free_consistent(pdev, sizeof(struct ipr_config_table),
5588 ioa_cfg->cfg_table, ioa_cfg->cfg_table_dma);
5589out_free_host_rrq:
5590 pci_free_consistent(pdev, sizeof(u32) * IPR_NUM_CMD_BLKS,
5591 ioa_cfg->host_rrq, ioa_cfg->host_rrq_dma);
5592out_ipr_free_cmd_blocks:
5593 ipr_free_cmd_blks(ioa_cfg);
5594out_free_vpd_cbs:
5595 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
5596 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
5597out_free_res_entries:
5598 kfree(ioa_cfg->res_entries);
5599 goto out;
5600}
5601
5602/**
5603 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
5604 * @ioa_cfg: ioa config struct
5605 *
5606 * Return value:
5607 * none
5608 **/
5609static void __devinit ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
5610{
5611 int i;
5612
5613 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
5614 ioa_cfg->bus_attr[i].bus = i;
5615 ioa_cfg->bus_attr[i].qas_enabled = 0;
5616 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
5617 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
5618 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
5619 else
5620 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
5621 }
5622}
5623
5624/**
5625 * ipr_init_ioa_cfg - Initialize IOA config struct
5626 * @ioa_cfg: ioa config struct
5627 * @host: scsi host struct
5628 * @pdev: PCI dev struct
5629 *
5630 * Return value:
5631 * none
5632 **/
5633static void __devinit ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
5634 struct Scsi_Host *host, struct pci_dev *pdev)
5635{
5636 const struct ipr_interrupt_offsets *p;
5637 struct ipr_interrupts *t;
5638 void __iomem *base;
5639
5640 ioa_cfg->host = host;
5641 ioa_cfg->pdev = pdev;
5642 ioa_cfg->log_level = ipr_log_level;
5643 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
5644 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
5645 sprintf(ioa_cfg->ipr_free_label, IPR_FREEQ_LABEL);
5646 sprintf(ioa_cfg->ipr_pending_label, IPR_PENDQ_LABEL);
5647 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
5648 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
5649 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
5650 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
5651
5652 INIT_LIST_HEAD(&ioa_cfg->free_q);
5653 INIT_LIST_HEAD(&ioa_cfg->pending_q);
5654 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
5655 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
5656 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
5657 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
5658 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread, ioa_cfg);
5659 init_waitqueue_head(&ioa_cfg->reset_wait_q);
5660 ioa_cfg->sdt_state = INACTIVE;
5661
5662 ipr_initialize_bus_attr(ioa_cfg);
5663
5664 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
5665 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
5666 host->max_channel = IPR_MAX_BUS_TO_SCAN;
5667 host->unique_id = host->host_no;
5668 host->max_cmd_len = IPR_MAX_CDB_LEN;
5669 pci_set_drvdata(pdev, ioa_cfg);
5670
5671 p = &ioa_cfg->chip_cfg->regs;
5672 t = &ioa_cfg->regs;
5673 base = ioa_cfg->hdw_dma_regs;
5674
5675 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
5676 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
5677 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
5678 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
5679 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
5680 t->ioarrin_reg = base + p->ioarrin_reg;
5681 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
5682 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
5683 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
5684}
5685
5686/**
5687 * ipr_get_chip_cfg - Find adapter chip configuration
5688 * @dev_id: PCI device id struct
5689 *
5690 * Return value:
5691 * ptr to chip config on success / NULL on failure
5692 **/
5693static const struct ipr_chip_cfg_t * __devinit
5694ipr_get_chip_cfg(const struct pci_device_id *dev_id)
5695{
5696 int i;
5697
5698 if (dev_id->driver_data)
5699 return (const struct ipr_chip_cfg_t *)dev_id->driver_data;
5700
5701 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
5702 if (ipr_chip[i].vendor == dev_id->vendor &&
5703 ipr_chip[i].device == dev_id->device)
5704 return ipr_chip[i].cfg;
5705 return NULL;
5706}
5707
5708/**
5709 * ipr_probe_ioa - Allocates memory and does first stage of initialization
5710 * @pdev: PCI device struct
5711 * @dev_id: PCI device id struct
5712 *
5713 * Return value:
5714 * 0 on success / non-zero on failure
5715 **/
5716static int __devinit ipr_probe_ioa(struct pci_dev *pdev,
5717 const struct pci_device_id *dev_id)
5718{
5719 struct ipr_ioa_cfg *ioa_cfg;
5720 struct Scsi_Host *host;
5721 unsigned long ipr_regs_pci;
5722 void __iomem *ipr_regs;
5723 u32 rc = PCIBIOS_SUCCESSFUL;
5724
5725 ENTER;
5726
5727 if ((rc = pci_enable_device(pdev))) {
5728 dev_err(&pdev->dev, "Cannot enable adapter\n");
5729 goto out;
5730 }
5731
5732 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
5733
5734 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
5735
5736 if (!host) {
5737 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
5738 rc = -ENOMEM;
5739 goto out_disable;
5740 }
5741
5742 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
5743 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
5744
5745 ioa_cfg->chip_cfg = ipr_get_chip_cfg(dev_id);
5746
5747 if (!ioa_cfg->chip_cfg) {
5748 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
5749 dev_id->vendor, dev_id->device);
5750 goto out_scsi_host_put;
5751 }
5752
5753 ipr_regs_pci = pci_resource_start(pdev, 0);
5754
5755 rc = pci_request_regions(pdev, IPR_NAME);
5756 if (rc < 0) {
5757 dev_err(&pdev->dev,
5758 "Couldn't register memory range of registers\n");
5759 goto out_scsi_host_put;
5760 }
5761
5762 ipr_regs = ioremap(ipr_regs_pci, pci_resource_len(pdev, 0));
5763
5764 if (!ipr_regs) {
5765 dev_err(&pdev->dev,
5766 "Couldn't map memory range of registers\n");
5767 rc = -ENOMEM;
5768 goto out_release_regions;
5769 }
5770
5771 ioa_cfg->hdw_dma_regs = ipr_regs;
5772 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
5773 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
5774
5775 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
5776
5777 pci_set_master(pdev);
5778
5779 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5780 if (rc < 0) {
5781 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
5782 goto cleanup_nomem;
5783 }
5784
5785 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
5786 ioa_cfg->chip_cfg->cache_line_size);
5787
5788 if (rc != PCIBIOS_SUCCESSFUL) {
5789 dev_err(&pdev->dev, "Write of cache line size failed\n");
5790 rc = -EIO;
5791 goto cleanup_nomem;
5792 }
5793
5794 /* Save away PCI config space for use following IOA reset */
5795 rc = pci_save_state(pdev);
5796
5797 if (rc != PCIBIOS_SUCCESSFUL) {
5798 dev_err(&pdev->dev, "Failed to save PCI config space\n");
5799 rc = -EIO;
5800 goto cleanup_nomem;
5801 }
5802
5803 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
5804 goto cleanup_nomem;
5805
5806 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
5807 goto cleanup_nomem;
5808
5809 rc = ipr_alloc_mem(ioa_cfg);
5810 if (rc < 0) {
5811 dev_err(&pdev->dev,
5812 "Couldn't allocate enough memory for device driver!\n");
5813 goto cleanup_nomem;
5814 }
5815
5816 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
5817 rc = request_irq(pdev->irq, ipr_isr, SA_SHIRQ, IPR_NAME, ioa_cfg);
5818
5819 if (rc) {
5820 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
5821 pdev->irq, rc);
5822 goto cleanup_nolog;
5823 }
5824
5825 spin_lock(&ipr_driver_lock);
5826 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
5827 spin_unlock(&ipr_driver_lock);
5828
5829 LEAVE;
5830out:
5831 return rc;
5832
5833cleanup_nolog:
5834 ipr_free_mem(ioa_cfg);
5835cleanup_nomem:
5836 iounmap(ipr_regs);
5837out_release_regions:
5838 pci_release_regions(pdev);
5839out_scsi_host_put:
5840 scsi_host_put(host);
5841out_disable:
5842 pci_disable_device(pdev);
5843 goto out;
5844}
5845
5846/**
5847 * ipr_scan_vsets - Scans for VSET devices
5848 * @ioa_cfg: ioa config struct
5849 *
5850 * Description: Since the VSET resources do not follow SAM in that we can have
5851 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
5852 *
5853 * Return value:
5854 * none
5855 **/
5856static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
5857{
5858 int target, lun;
5859
5860 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
5861 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++ )
5862 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
5863}
5864
5865/**
5866 * ipr_initiate_ioa_bringdown - Bring down an adapter
5867 * @ioa_cfg: ioa config struct
5868 * @shutdown_type: shutdown type
5869 *
5870 * Description: This function will initiate bringing down the adapter.
5871 * This consists of issuing an IOA shutdown to the adapter
5872 * to flush the cache, and running BIST.
5873 * If the caller needs to wait on the completion of the reset,
5874 * the caller must sleep on the reset_wait_q.
5875 *
5876 * Return value:
5877 * none
5878 **/
5879static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
5880 enum ipr_shutdown_type shutdown_type)
5881{
5882 ENTER;
5883 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
5884 ioa_cfg->sdt_state = ABORT_DUMP;
5885 ioa_cfg->reset_retries = 0;
5886 ioa_cfg->in_ioa_bringdown = 1;
5887 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
5888 LEAVE;
5889}
5890
5891/**
5892 * __ipr_remove - Remove a single adapter
5893 * @pdev: pci device struct
5894 *
5895 * Adapter hot plug remove entry point.
5896 *
5897 * Return value:
5898 * none
5899 **/
5900static void __ipr_remove(struct pci_dev *pdev)
5901{
5902 unsigned long host_lock_flags = 0;
5903 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5904 ENTER;
5905
5906 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5907 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
5908
5909 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5910 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
brking@us.ibm.com 5cbf5ea2005-05-02 19:50:47 -05005911 flush_scheduled_work();
Linus Torvalds1da177e2005-04-16 15:20:36 -07005912 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
5913
5914 spin_lock(&ipr_driver_lock);
5915 list_del(&ioa_cfg->queue);
5916 spin_unlock(&ipr_driver_lock);
5917
5918 if (ioa_cfg->sdt_state == ABORT_DUMP)
5919 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
5920 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
5921
5922 ipr_free_all_resources(ioa_cfg);
5923
5924 LEAVE;
5925}
5926
5927/**
5928 * ipr_remove - IOA hot plug remove entry point
5929 * @pdev: pci device struct
5930 *
5931 * Adapter hot plug remove entry point.
5932 *
5933 * Return value:
5934 * none
5935 **/
5936static void ipr_remove(struct pci_dev *pdev)
5937{
5938 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
5939
5940 ENTER;
5941
Linus Torvalds1da177e2005-04-16 15:20:36 -07005942 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5943 &ipr_trace_attr);
5944 ipr_remove_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5945 &ipr_dump_attr);
5946 scsi_remove_host(ioa_cfg->host);
5947
5948 __ipr_remove(pdev);
5949
5950 LEAVE;
5951}
5952
5953/**
5954 * ipr_probe - Adapter hot plug add entry point
5955 *
5956 * Return value:
5957 * 0 on success / non-zero on failure
5958 **/
5959static int __devinit ipr_probe(struct pci_dev *pdev,
5960 const struct pci_device_id *dev_id)
5961{
5962 struct ipr_ioa_cfg *ioa_cfg;
5963 int rc;
5964
5965 rc = ipr_probe_ioa(pdev, dev_id);
5966
5967 if (rc)
5968 return rc;
5969
5970 ioa_cfg = pci_get_drvdata(pdev);
5971 rc = ipr_probe_ioa_part2(ioa_cfg);
5972
5973 if (rc) {
5974 __ipr_remove(pdev);
5975 return rc;
5976 }
5977
5978 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
5979
5980 if (rc) {
5981 __ipr_remove(pdev);
5982 return rc;
5983 }
5984
5985 rc = ipr_create_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5986 &ipr_trace_attr);
5987
5988 if (rc) {
5989 scsi_remove_host(ioa_cfg->host);
5990 __ipr_remove(pdev);
5991 return rc;
5992 }
5993
5994 rc = ipr_create_dump_file(&ioa_cfg->host->shost_classdev.kobj,
5995 &ipr_dump_attr);
5996
5997 if (rc) {
5998 ipr_remove_trace_file(&ioa_cfg->host->shost_classdev.kobj,
5999 &ipr_trace_attr);
6000 scsi_remove_host(ioa_cfg->host);
6001 __ipr_remove(pdev);
6002 return rc;
6003 }
6004
6005 scsi_scan_host(ioa_cfg->host);
6006 ipr_scan_vsets(ioa_cfg);
6007 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
6008 ioa_cfg->allow_ml_add_del = 1;
6009 schedule_work(&ioa_cfg->work_q);
6010 return 0;
6011}
6012
6013/**
6014 * ipr_shutdown - Shutdown handler.
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07006015 * @pdev: pci device struct
Linus Torvalds1da177e2005-04-16 15:20:36 -07006016 *
6017 * This function is invoked upon system shutdown/reboot. It will issue
6018 * an adapter shutdown to the adapter to flush the write cache.
6019 *
6020 * Return value:
6021 * none
6022 **/
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07006023static void ipr_shutdown(struct pci_dev *pdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07006024{
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07006025 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
Linus Torvalds1da177e2005-04-16 15:20:36 -07006026 unsigned long lock_flags = 0;
6027
6028 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6029 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
6030 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6031 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6032}
6033
6034static struct pci_device_id ipr_pci_table[] __devinitdata = {
6035 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6036 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702,
6037 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6038 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6039 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703,
6040 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6041 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6042 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D,
6043 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6044 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
6045 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E,
6046 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6047 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6048 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B,
6049 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6050 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6051 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E,
6052 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6053 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
6054 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A,
6055 0, 0, (kernel_ulong_t)&ipr_chip_cfg[0] },
6056 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
6057 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780,
6058 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6059 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
6060 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E,
6061 0, 0, (kernel_ulong_t)&ipr_chip_cfg[1] },
6062 { }
6063};
6064MODULE_DEVICE_TABLE(pci, ipr_pci_table);
6065
6066static struct pci_driver ipr_driver = {
6067 .name = IPR_NAME,
6068 .id_table = ipr_pci_table,
6069 .probe = ipr_probe,
6070 .remove = ipr_remove,
Greg Kroah-Hartmand18c3db2005-06-23 17:35:56 -07006071 .shutdown = ipr_shutdown,
Linus Torvalds1da177e2005-04-16 15:20:36 -07006072};
6073
6074/**
6075 * ipr_init - Module entry point
6076 *
6077 * Return value:
6078 * 0 on success / negative value on failure
6079 **/
6080static int __init ipr_init(void)
6081{
6082 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
6083 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
6084
6085 return pci_module_init(&ipr_driver);
6086}
6087
6088/**
6089 * ipr_exit - Module unload
6090 *
6091 * Module unload entry point.
6092 *
6093 * Return value:
6094 * none
6095 **/
6096static void __exit ipr_exit(void)
6097{
6098 pci_unregister_driver(&ipr_driver);
6099}
6100
6101module_init(ipr_init);
6102module_exit(ipr_exit);