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scsi: ipr: do not set DID_PASSTHROUGH on CHECK CONDITION
[mirror_ubuntu-zesty-kernel.git] / drivers / scsi / ipr.c
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/vmalloc.h>
64 #include <linux/ioport.h>
65 #include <linux/delay.h>
66 #include <linux/pci.h>
67 #include <linux/wait.h>
68 #include <linux/spinlock.h>
69 #include <linux/sched.h>
70 #include <linux/interrupt.h>
71 #include <linux/blkdev.h>
72 #include <linux/firmware.h>
73 #include <linux/module.h>
74 #include <linux/moduleparam.h>
75 #include <linux/libata.h>
76 #include <linux/hdreg.h>
77 #include <linux/reboot.h>
78 #include <linux/stringify.h>
79 #include <asm/io.h>
80 #include <asm/irq.h>
81 #include <asm/processor.h>
82 #include <scsi/scsi.h>
83 #include <scsi/scsi_host.h>
84 #include <scsi/scsi_tcq.h>
85 #include <scsi/scsi_eh.h>
86 #include <scsi/scsi_cmnd.h>
87 #include "ipr.h"
88
89 /*
90 * Global Data
91 */
92 static LIST_HEAD(ipr_ioa_head);
93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94 static unsigned int ipr_max_speed = 1;
95 static int ipr_testmode = 0;
96 static unsigned int ipr_fastfail = 0;
97 static unsigned int ipr_transop_timeout = 0;
98 static unsigned int ipr_debug = 0;
99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
100 static unsigned int ipr_dual_ioa_raid = 1;
101 static unsigned int ipr_number_of_msix = 16;
102 static unsigned int ipr_fast_reboot;
103 static DEFINE_SPINLOCK(ipr_driver_lock);
104
105 /* This table describes the differences between DMA controller chips */
106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
107 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
108 .mailbox = 0x0042C,
109 .max_cmds = 100,
110 .cache_line_size = 0x20,
111 .clear_isr = 1,
112 .iopoll_weight = 0,
113 {
114 .set_interrupt_mask_reg = 0x0022C,
115 .clr_interrupt_mask_reg = 0x00230,
116 .clr_interrupt_mask_reg32 = 0x00230,
117 .sense_interrupt_mask_reg = 0x0022C,
118 .sense_interrupt_mask_reg32 = 0x0022C,
119 .clr_interrupt_reg = 0x00228,
120 .clr_interrupt_reg32 = 0x00228,
121 .sense_interrupt_reg = 0x00224,
122 .sense_interrupt_reg32 = 0x00224,
123 .ioarrin_reg = 0x00404,
124 .sense_uproc_interrupt_reg = 0x00214,
125 .sense_uproc_interrupt_reg32 = 0x00214,
126 .set_uproc_interrupt_reg = 0x00214,
127 .set_uproc_interrupt_reg32 = 0x00214,
128 .clr_uproc_interrupt_reg = 0x00218,
129 .clr_uproc_interrupt_reg32 = 0x00218
130 }
131 },
132 { /* Snipe and Scamp */
133 .mailbox = 0x0052C,
134 .max_cmds = 100,
135 .cache_line_size = 0x20,
136 .clear_isr = 1,
137 .iopoll_weight = 0,
138 {
139 .set_interrupt_mask_reg = 0x00288,
140 .clr_interrupt_mask_reg = 0x0028C,
141 .clr_interrupt_mask_reg32 = 0x0028C,
142 .sense_interrupt_mask_reg = 0x00288,
143 .sense_interrupt_mask_reg32 = 0x00288,
144 .clr_interrupt_reg = 0x00284,
145 .clr_interrupt_reg32 = 0x00284,
146 .sense_interrupt_reg = 0x00280,
147 .sense_interrupt_reg32 = 0x00280,
148 .ioarrin_reg = 0x00504,
149 .sense_uproc_interrupt_reg = 0x00290,
150 .sense_uproc_interrupt_reg32 = 0x00290,
151 .set_uproc_interrupt_reg = 0x00290,
152 .set_uproc_interrupt_reg32 = 0x00290,
153 .clr_uproc_interrupt_reg = 0x00294,
154 .clr_uproc_interrupt_reg32 = 0x00294
155 }
156 },
157 { /* CRoC */
158 .mailbox = 0x00044,
159 .max_cmds = 1000,
160 .cache_line_size = 0x20,
161 .clear_isr = 0,
162 .iopoll_weight = 64,
163 {
164 .set_interrupt_mask_reg = 0x00010,
165 .clr_interrupt_mask_reg = 0x00018,
166 .clr_interrupt_mask_reg32 = 0x0001C,
167 .sense_interrupt_mask_reg = 0x00010,
168 .sense_interrupt_mask_reg32 = 0x00014,
169 .clr_interrupt_reg = 0x00008,
170 .clr_interrupt_reg32 = 0x0000C,
171 .sense_interrupt_reg = 0x00000,
172 .sense_interrupt_reg32 = 0x00004,
173 .ioarrin_reg = 0x00070,
174 .sense_uproc_interrupt_reg = 0x00020,
175 .sense_uproc_interrupt_reg32 = 0x00024,
176 .set_uproc_interrupt_reg = 0x00020,
177 .set_uproc_interrupt_reg32 = 0x00024,
178 .clr_uproc_interrupt_reg = 0x00028,
179 .clr_uproc_interrupt_reg32 = 0x0002C,
180 .init_feedback_reg = 0x0005C,
181 .dump_addr_reg = 0x00064,
182 .dump_data_reg = 0x00068,
183 .endian_swap_reg = 0x00084
184 }
185 },
186 };
187
188 static const struct ipr_chip_t ipr_chip[] = {
189 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
191 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
194 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
195 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
197 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
198 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
199 };
200
201 static int ipr_max_bus_speeds[] = {
202 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
203 };
204
205 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
206 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
207 module_param_named(max_speed, ipr_max_speed, uint, 0);
208 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
209 module_param_named(log_level, ipr_log_level, uint, 0);
210 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
211 module_param_named(testmode, ipr_testmode, int, 0);
212 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
213 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
214 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
215 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
216 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
217 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
218 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
219 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
220 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
221 module_param_named(max_devs, ipr_max_devs, int, 0);
222 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
223 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
224 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
225 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:16)");
226 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
227 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
228 MODULE_LICENSE("GPL");
229 MODULE_VERSION(IPR_DRIVER_VERSION);
230
231 /* A constant array of IOASCs/URCs/Error Messages */
232 static const
233 struct ipr_error_table_t ipr_error_table[] = {
234 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
235 "8155: An unknown error was received"},
236 {0x00330000, 0, 0,
237 "Soft underlength error"},
238 {0x005A0000, 0, 0,
239 "Command to be cancelled not found"},
240 {0x00808000, 0, 0,
241 "Qualified success"},
242 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
243 "FFFE: Soft device bus error recovered by the IOA"},
244 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
245 "4101: Soft device bus fabric error"},
246 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
247 "FFFC: Logical block guard error recovered by the device"},
248 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
249 "FFFC: Logical block reference tag error recovered by the device"},
250 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
251 "4171: Recovered scatter list tag / sequence number error"},
252 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
254 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
255 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
256 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
257 "FFFD: Recovered logical block reference tag error detected by the IOA"},
258 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
259 "FFFD: Logical block guard error recovered by the IOA"},
260 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
261 "FFF9: Device sector reassign successful"},
262 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
263 "FFF7: Media error recovered by device rewrite procedures"},
264 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
265 "7001: IOA sector reassignment successful"},
266 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
267 "FFF9: Soft media error. Sector reassignment recommended"},
268 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
269 "FFF7: Media error recovered by IOA rewrite procedures"},
270 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
271 "FF3D: Soft PCI bus error recovered by the IOA"},
272 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
273 "FFF6: Device hardware error recovered by the IOA"},
274 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
275 "FFF6: Device hardware error recovered by the device"},
276 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
277 "FF3D: Soft IOA error recovered by the IOA"},
278 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
279 "FFFA: Undefined device response recovered by the IOA"},
280 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
281 "FFF6: Device bus error, message or command phase"},
282 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
283 "FFFE: Task Management Function failed"},
284 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
285 "FFF6: Failure prediction threshold exceeded"},
286 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
287 "8009: Impending cache battery pack failure"},
288 {0x02040100, 0, 0,
289 "Logical Unit in process of becoming ready"},
290 {0x02040200, 0, 0,
291 "Initializing command required"},
292 {0x02040400, 0, 0,
293 "34FF: Disk device format in progress"},
294 {0x02040C00, 0, 0,
295 "Logical unit not accessible, target port in unavailable state"},
296 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
297 "9070: IOA requested reset"},
298 {0x023F0000, 0, 0,
299 "Synchronization required"},
300 {0x02408500, 0, 0,
301 "IOA microcode download required"},
302 {0x02408600, 0, 0,
303 "Device bus connection is prohibited by host"},
304 {0x024E0000, 0, 0,
305 "No ready, IOA shutdown"},
306 {0x025A0000, 0, 0,
307 "Not ready, IOA has been shutdown"},
308 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
309 "3020: Storage subsystem configuration error"},
310 {0x03110B00, 0, 0,
311 "FFF5: Medium error, data unreadable, recommend reassign"},
312 {0x03110C00, 0, 0,
313 "7000: Medium error, data unreadable, do not reassign"},
314 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
315 "FFF3: Disk media format bad"},
316 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
317 "3002: Addressed device failed to respond to selection"},
318 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
319 "3100: Device bus error"},
320 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
321 "3109: IOA timed out a device command"},
322 {0x04088000, 0, 0,
323 "3120: SCSI bus is not operational"},
324 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
325 "4100: Hard device bus fabric error"},
326 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
327 "310C: Logical block guard error detected by the device"},
328 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
329 "310C: Logical block reference tag error detected by the device"},
330 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
331 "4170: Scatter list tag / sequence number error"},
332 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
333 "8150: Logical block CRC error on IOA to Host transfer"},
334 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
335 "4170: Logical block sequence number error on IOA to Host transfer"},
336 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
337 "310D: Logical block reference tag error detected by the IOA"},
338 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
339 "310D: Logical block guard error detected by the IOA"},
340 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
341 "9000: IOA reserved area data check"},
342 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
343 "9001: IOA reserved area invalid data pattern"},
344 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
345 "9002: IOA reserved area LRC error"},
346 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
347 "Hardware Error, IOA metadata access error"},
348 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
349 "102E: Out of alternate sectors for disk storage"},
350 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
351 "FFF4: Data transfer underlength error"},
352 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
353 "FFF4: Data transfer overlength error"},
354 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
355 "3400: Logical unit failure"},
356 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
357 "FFF4: Device microcode is corrupt"},
358 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
359 "8150: PCI bus error"},
360 {0x04430000, 1, 0,
361 "Unsupported device bus message received"},
362 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
363 "FFF4: Disk device problem"},
364 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
365 "8150: Permanent IOA failure"},
366 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
367 "3010: Disk device returned wrong response to IOA"},
368 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
369 "8151: IOA microcode error"},
370 {0x04448500, 0, 0,
371 "Device bus status error"},
372 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
373 "8157: IOA error requiring IOA reset to recover"},
374 {0x04448700, 0, 0,
375 "ATA device status error"},
376 {0x04490000, 0, 0,
377 "Message reject received from the device"},
378 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
379 "8008: A permanent cache battery pack failure occurred"},
380 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
381 "9090: Disk unit has been modified after the last known status"},
382 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
383 "9081: IOA detected device error"},
384 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
385 "9082: IOA detected device error"},
386 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
387 "3110: Device bus error, message or command phase"},
388 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
389 "3110: SAS Command / Task Management Function failed"},
390 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
391 "9091: Incorrect hardware configuration change has been detected"},
392 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
393 "9073: Invalid multi-adapter configuration"},
394 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
395 "4010: Incorrect connection between cascaded expanders"},
396 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
397 "4020: Connections exceed IOA design limits"},
398 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
399 "4030: Incorrect multipath connection"},
400 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
401 "4110: Unsupported enclosure function"},
402 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
403 "4120: SAS cable VPD cannot be read"},
404 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
405 "FFF4: Command to logical unit failed"},
406 {0x05240000, 1, 0,
407 "Illegal request, invalid request type or request packet"},
408 {0x05250000, 0, 0,
409 "Illegal request, invalid resource handle"},
410 {0x05258000, 0, 0,
411 "Illegal request, commands not allowed to this device"},
412 {0x05258100, 0, 0,
413 "Illegal request, command not allowed to a secondary adapter"},
414 {0x05258200, 0, 0,
415 "Illegal request, command not allowed to a non-optimized resource"},
416 {0x05260000, 0, 0,
417 "Illegal request, invalid field in parameter list"},
418 {0x05260100, 0, 0,
419 "Illegal request, parameter not supported"},
420 {0x05260200, 0, 0,
421 "Illegal request, parameter value invalid"},
422 {0x052C0000, 0, 0,
423 "Illegal request, command sequence error"},
424 {0x052C8000, 1, 0,
425 "Illegal request, dual adapter support not enabled"},
426 {0x052C8100, 1, 0,
427 "Illegal request, another cable connector was physically disabled"},
428 {0x054E8000, 1, 0,
429 "Illegal request, inconsistent group id/group count"},
430 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
431 "9031: Array protection temporarily suspended, protection resuming"},
432 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
433 "9040: Array protection temporarily suspended, protection resuming"},
434 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
435 "4080: IOA exceeded maximum operating temperature"},
436 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
437 "4085: Service required"},
438 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
439 "3140: Device bus not ready to ready transition"},
440 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
441 "FFFB: SCSI bus was reset"},
442 {0x06290500, 0, 0,
443 "FFFE: SCSI bus transition to single ended"},
444 {0x06290600, 0, 0,
445 "FFFE: SCSI bus transition to LVD"},
446 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
447 "FFFB: SCSI bus was reset by another initiator"},
448 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
449 "3029: A device replacement has occurred"},
450 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
451 "4102: Device bus fabric performance degradation"},
452 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
453 "9051: IOA cache data exists for a missing or failed device"},
454 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
455 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
456 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
457 "9025: Disk unit is not supported at its physical location"},
458 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
459 "3020: IOA detected a SCSI bus configuration error"},
460 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
461 "3150: SCSI bus configuration error"},
462 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
463 "9074: Asymmetric advanced function disk configuration"},
464 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
465 "4040: Incomplete multipath connection between IOA and enclosure"},
466 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
467 "4041: Incomplete multipath connection between enclosure and device"},
468 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
469 "9075: Incomplete multipath connection between IOA and remote IOA"},
470 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9076: Configuration error, missing remote IOA"},
472 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
473 "4050: Enclosure does not support a required multipath function"},
474 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
475 "4121: Configuration error, required cable is missing"},
476 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
477 "4122: Cable is not plugged into the correct location on remote IOA"},
478 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
479 "4123: Configuration error, invalid cable vital product data"},
480 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
481 "4124: Configuration error, both cable ends are plugged into the same IOA"},
482 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
483 "4070: Logically bad block written on device"},
484 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
485 "9041: Array protection temporarily suspended"},
486 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9042: Corrupt array parity detected on specified device"},
488 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9030: Array no longer protected due to missing or failed disk unit"},
490 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9071: Link operational transition"},
492 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9072: Link not operational transition"},
494 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9032: Array exposed but still protected"},
496 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL,
497 "70DD: Device forced failed by disrupt device command"},
498 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
499 "4061: Multipath redundancy level got better"},
500 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
501 "4060: Multipath redundancy level got worse"},
502 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL,
503 "9083: Device raw mode enabled"},
504 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL,
505 "9084: Device raw mode disabled"},
506 {0x07270000, 0, 0,
507 "Failure due to other device"},
508 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
509 "9008: IOA does not support functions expected by devices"},
510 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
511 "9010: Cache data associated with attached devices cannot be found"},
512 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
513 "9011: Cache data belongs to devices other than those attached"},
514 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
515 "9020: Array missing 2 or more devices with only 1 device present"},
516 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
517 "9021: Array missing 2 or more devices with 2 or more devices present"},
518 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
519 "9022: Exposed array is missing a required device"},
520 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
521 "9023: Array member(s) not at required physical locations"},
522 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
523 "9024: Array not functional due to present hardware configuration"},
524 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
525 "9026: Array not functional due to present hardware configuration"},
526 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
527 "9027: Array is missing a device and parity is out of sync"},
528 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
529 "9028: Maximum number of arrays already exist"},
530 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
531 "9050: Required cache data cannot be located for a disk unit"},
532 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
533 "9052: Cache data exists for a device that has been modified"},
534 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
535 "9054: IOA resources not available due to previous problems"},
536 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
537 "9092: Disk unit requires initialization before use"},
538 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
539 "9029: Incorrect hardware configuration change has been detected"},
540 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
541 "9060: One or more disk pairs are missing from an array"},
542 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
543 "9061: One or more disks are missing from an array"},
544 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
545 "9062: One or more disks are missing from an array"},
546 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
547 "9063: Maximum number of functional arrays has been exceeded"},
548 {0x07279A00, 0, 0,
549 "Data protect, other volume set problem"},
550 {0x0B260000, 0, 0,
551 "Aborted command, invalid descriptor"},
552 {0x0B3F9000, 0, 0,
553 "Target operating conditions have changed, dual adapter takeover"},
554 {0x0B530200, 0, 0,
555 "Aborted command, medium removal prevented"},
556 {0x0B5A0000, 0, 0,
557 "Command terminated by host"},
558 {0x0B5B8000, 0, 0,
559 "Aborted command, command terminated by host"}
560 };
561
562 static const struct ipr_ses_table_entry ipr_ses_table[] = {
563 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
564 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
565 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
566 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
567 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
568 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
569 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
570 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
571 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
572 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
573 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
574 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
575 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
576 };
577
578 /*
579 * Function Prototypes
580 */
581 static int ipr_reset_alert(struct ipr_cmnd *);
582 static void ipr_process_ccn(struct ipr_cmnd *);
583 static void ipr_process_error(struct ipr_cmnd *);
584 static void ipr_reset_ioa_job(struct ipr_cmnd *);
585 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
586 enum ipr_shutdown_type);
587
588 #ifdef CONFIG_SCSI_IPR_TRACE
589 /**
590 * ipr_trc_hook - Add a trace entry to the driver trace
591 * @ipr_cmd: ipr command struct
592 * @type: trace type
593 * @add_data: additional data
594 *
595 * Return value:
596 * none
597 **/
598 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
599 u8 type, u32 add_data)
600 {
601 struct ipr_trace_entry *trace_entry;
602 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
603 unsigned int trace_index;
604
605 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
606 trace_entry = &ioa_cfg->trace[trace_index];
607 trace_entry->time = jiffies;
608 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
609 trace_entry->type = type;
610 if (ipr_cmd->ioa_cfg->sis64)
611 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
612 else
613 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
614 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
615 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
616 trace_entry->u.add_data = add_data;
617 wmb();
618 }
619 #else
620 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
621 #endif
622
623 /**
624 * ipr_lock_and_done - Acquire lock and complete command
625 * @ipr_cmd: ipr command struct
626 *
627 * Return value:
628 * none
629 **/
630 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
631 {
632 unsigned long lock_flags;
633 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
634
635 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
636 ipr_cmd->done(ipr_cmd);
637 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
638 }
639
640 /**
641 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
642 * @ipr_cmd: ipr command struct
643 *
644 * Return value:
645 * none
646 **/
647 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
648 {
649 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
650 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
651 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
652 dma_addr_t dma_addr = ipr_cmd->dma_addr;
653 int hrrq_id;
654
655 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
656 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
657 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
658 ioarcb->data_transfer_length = 0;
659 ioarcb->read_data_transfer_length = 0;
660 ioarcb->ioadl_len = 0;
661 ioarcb->read_ioadl_len = 0;
662
663 if (ipr_cmd->ioa_cfg->sis64) {
664 ioarcb->u.sis64_addr_data.data_ioadl_addr =
665 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
666 ioasa64->u.gata.status = 0;
667 } else {
668 ioarcb->write_ioadl_addr =
669 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
670 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
671 ioasa->u.gata.status = 0;
672 }
673
674 ioasa->hdr.ioasc = 0;
675 ioasa->hdr.residual_data_len = 0;
676 ipr_cmd->scsi_cmd = NULL;
677 ipr_cmd->qc = NULL;
678 ipr_cmd->sense_buffer[0] = 0;
679 ipr_cmd->dma_use_sg = 0;
680 }
681
682 /**
683 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
684 * @ipr_cmd: ipr command struct
685 *
686 * Return value:
687 * none
688 **/
689 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
690 void (*fast_done) (struct ipr_cmnd *))
691 {
692 ipr_reinit_ipr_cmnd(ipr_cmd);
693 ipr_cmd->u.scratch = 0;
694 ipr_cmd->sibling = NULL;
695 ipr_cmd->eh_comp = NULL;
696 ipr_cmd->fast_done = fast_done;
697 init_timer(&ipr_cmd->timer);
698 }
699
700 /**
701 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
702 * @ioa_cfg: ioa config struct
703 *
704 * Return value:
705 * pointer to ipr command struct
706 **/
707 static
708 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
709 {
710 struct ipr_cmnd *ipr_cmd = NULL;
711
712 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
713 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
714 struct ipr_cmnd, queue);
715 list_del(&ipr_cmd->queue);
716 }
717
718
719 return ipr_cmd;
720 }
721
722 /**
723 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
724 * @ioa_cfg: ioa config struct
725 *
726 * Return value:
727 * pointer to ipr command struct
728 **/
729 static
730 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
731 {
732 struct ipr_cmnd *ipr_cmd =
733 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
734 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
735 return ipr_cmd;
736 }
737
738 /**
739 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
740 * @ioa_cfg: ioa config struct
741 * @clr_ints: interrupts to clear
742 *
743 * This function masks all interrupts on the adapter, then clears the
744 * interrupts specified in the mask
745 *
746 * Return value:
747 * none
748 **/
749 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
750 u32 clr_ints)
751 {
752 volatile u32 int_reg;
753 int i;
754
755 /* Stop new interrupts */
756 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
757 spin_lock(&ioa_cfg->hrrq[i]._lock);
758 ioa_cfg->hrrq[i].allow_interrupts = 0;
759 spin_unlock(&ioa_cfg->hrrq[i]._lock);
760 }
761 wmb();
762
763 /* Set interrupt mask to stop all new interrupts */
764 if (ioa_cfg->sis64)
765 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
766 else
767 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
768
769 /* Clear any pending interrupts */
770 if (ioa_cfg->sis64)
771 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
772 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
773 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
774 }
775
776 /**
777 * ipr_save_pcix_cmd_reg - Save PCI-X command register
778 * @ioa_cfg: ioa config struct
779 *
780 * Return value:
781 * 0 on success / -EIO on failure
782 **/
783 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
784 {
785 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
786
787 if (pcix_cmd_reg == 0)
788 return 0;
789
790 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
791 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
792 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
793 return -EIO;
794 }
795
796 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
797 return 0;
798 }
799
800 /**
801 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
802 * @ioa_cfg: ioa config struct
803 *
804 * Return value:
805 * 0 on success / -EIO on failure
806 **/
807 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
808 {
809 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
810
811 if (pcix_cmd_reg) {
812 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
813 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
814 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
815 return -EIO;
816 }
817 }
818
819 return 0;
820 }
821
822 /**
823 * ipr_sata_eh_done - done function for aborted SATA commands
824 * @ipr_cmd: ipr command struct
825 *
826 * This function is invoked for ops generated to SATA
827 * devices which are being aborted.
828 *
829 * Return value:
830 * none
831 **/
832 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
833 {
834 struct ata_queued_cmd *qc = ipr_cmd->qc;
835 struct ipr_sata_port *sata_port = qc->ap->private_data;
836
837 qc->err_mask |= AC_ERR_OTHER;
838 sata_port->ioasa.status |= ATA_BUSY;
839 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
840 ata_qc_complete(qc);
841 }
842
843 /**
844 * ipr_scsi_eh_done - mid-layer done function for aborted ops
845 * @ipr_cmd: ipr command struct
846 *
847 * This function is invoked by the interrupt handler for
848 * ops generated by the SCSI mid-layer which are being aborted.
849 *
850 * Return value:
851 * none
852 **/
853 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
854 {
855 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
856
857 scsi_cmd->result |= (DID_ERROR << 16);
858
859 scsi_dma_unmap(ipr_cmd->scsi_cmd);
860 scsi_cmd->scsi_done(scsi_cmd);
861 if (ipr_cmd->eh_comp)
862 complete(ipr_cmd->eh_comp);
863 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
864 }
865
866 /**
867 * ipr_fail_all_ops - Fails all outstanding ops.
868 * @ioa_cfg: ioa config struct
869 *
870 * This function fails all outstanding ops.
871 *
872 * Return value:
873 * none
874 **/
875 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
876 {
877 struct ipr_cmnd *ipr_cmd, *temp;
878 struct ipr_hrr_queue *hrrq;
879
880 ENTER;
881 for_each_hrrq(hrrq, ioa_cfg) {
882 spin_lock(&hrrq->_lock);
883 list_for_each_entry_safe(ipr_cmd,
884 temp, &hrrq->hrrq_pending_q, queue) {
885 list_del(&ipr_cmd->queue);
886
887 ipr_cmd->s.ioasa.hdr.ioasc =
888 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
889 ipr_cmd->s.ioasa.hdr.ilid =
890 cpu_to_be32(IPR_DRIVER_ILID);
891
892 if (ipr_cmd->scsi_cmd)
893 ipr_cmd->done = ipr_scsi_eh_done;
894 else if (ipr_cmd->qc)
895 ipr_cmd->done = ipr_sata_eh_done;
896
897 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
898 IPR_IOASC_IOA_WAS_RESET);
899 del_timer(&ipr_cmd->timer);
900 ipr_cmd->done(ipr_cmd);
901 }
902 spin_unlock(&hrrq->_lock);
903 }
904 LEAVE;
905 }
906
907 /**
908 * ipr_send_command - Send driver initiated requests.
909 * @ipr_cmd: ipr command struct
910 *
911 * This function sends a command to the adapter using the correct write call.
912 * In the case of sis64, calculate the ioarcb size required. Then or in the
913 * appropriate bits.
914 *
915 * Return value:
916 * none
917 **/
918 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
919 {
920 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
921 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
922
923 if (ioa_cfg->sis64) {
924 /* The default size is 256 bytes */
925 send_dma_addr |= 0x1;
926
927 /* If the number of ioadls * size of ioadl > 128 bytes,
928 then use a 512 byte ioarcb */
929 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
930 send_dma_addr |= 0x4;
931 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
932 } else
933 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
934 }
935
936 /**
937 * ipr_do_req - Send driver initiated requests.
938 * @ipr_cmd: ipr command struct
939 * @done: done function
940 * @timeout_func: timeout function
941 * @timeout: timeout value
942 *
943 * This function sends the specified command to the adapter with the
944 * timeout given. The done function is invoked on command completion.
945 *
946 * Return value:
947 * none
948 **/
949 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
950 void (*done) (struct ipr_cmnd *),
951 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
952 {
953 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
954
955 ipr_cmd->done = done;
956
957 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
958 ipr_cmd->timer.expires = jiffies + timeout;
959 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
960
961 add_timer(&ipr_cmd->timer);
962
963 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
964
965 ipr_send_command(ipr_cmd);
966 }
967
968 /**
969 * ipr_internal_cmd_done - Op done function for an internally generated op.
970 * @ipr_cmd: ipr command struct
971 *
972 * This function is the op done function for an internally generated,
973 * blocking op. It simply wakes the sleeping thread.
974 *
975 * Return value:
976 * none
977 **/
978 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
979 {
980 if (ipr_cmd->sibling)
981 ipr_cmd->sibling = NULL;
982 else
983 complete(&ipr_cmd->completion);
984 }
985
986 /**
987 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
988 * @ipr_cmd: ipr command struct
989 * @dma_addr: dma address
990 * @len: transfer length
991 * @flags: ioadl flag value
992 *
993 * This function initializes an ioadl in the case where there is only a single
994 * descriptor.
995 *
996 * Return value:
997 * nothing
998 **/
999 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
1000 u32 len, int flags)
1001 {
1002 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1003 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1004
1005 ipr_cmd->dma_use_sg = 1;
1006
1007 if (ipr_cmd->ioa_cfg->sis64) {
1008 ioadl64->flags = cpu_to_be32(flags);
1009 ioadl64->data_len = cpu_to_be32(len);
1010 ioadl64->address = cpu_to_be64(dma_addr);
1011
1012 ipr_cmd->ioarcb.ioadl_len =
1013 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1014 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1015 } else {
1016 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1017 ioadl->address = cpu_to_be32(dma_addr);
1018
1019 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1020 ipr_cmd->ioarcb.read_ioadl_len =
1021 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1022 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1023 } else {
1024 ipr_cmd->ioarcb.ioadl_len =
1025 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1026 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1027 }
1028 }
1029 }
1030
1031 /**
1032 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1033 * @ipr_cmd: ipr command struct
1034 * @timeout_func: function to invoke if command times out
1035 * @timeout: timeout
1036 *
1037 * Return value:
1038 * none
1039 **/
1040 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1041 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
1042 u32 timeout)
1043 {
1044 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1045
1046 init_completion(&ipr_cmd->completion);
1047 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1048
1049 spin_unlock_irq(ioa_cfg->host->host_lock);
1050 wait_for_completion(&ipr_cmd->completion);
1051 spin_lock_irq(ioa_cfg->host->host_lock);
1052 }
1053
1054 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1055 {
1056 unsigned int hrrq;
1057
1058 if (ioa_cfg->hrrq_num == 1)
1059 hrrq = 0;
1060 else {
1061 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1062 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1063 }
1064 return hrrq;
1065 }
1066
1067 /**
1068 * ipr_send_hcam - Send an HCAM to the adapter.
1069 * @ioa_cfg: ioa config struct
1070 * @type: HCAM type
1071 * @hostrcb: hostrcb struct
1072 *
1073 * This function will send a Host Controlled Async command to the adapter.
1074 * If HCAMs are currently not allowed to be issued to the adapter, it will
1075 * place the hostrcb on the free queue.
1076 *
1077 * Return value:
1078 * none
1079 **/
1080 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1081 struct ipr_hostrcb *hostrcb)
1082 {
1083 struct ipr_cmnd *ipr_cmd;
1084 struct ipr_ioarcb *ioarcb;
1085
1086 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1087 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1088 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1089 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1090
1091 ipr_cmd->u.hostrcb = hostrcb;
1092 ioarcb = &ipr_cmd->ioarcb;
1093
1094 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1095 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1096 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1097 ioarcb->cmd_pkt.cdb[1] = type;
1098 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1099 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1100
1101 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1102 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1103
1104 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1105 ipr_cmd->done = ipr_process_ccn;
1106 else
1107 ipr_cmd->done = ipr_process_error;
1108
1109 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1110
1111 ipr_send_command(ipr_cmd);
1112 } else {
1113 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1114 }
1115 }
1116
1117 /**
1118 * ipr_update_ata_class - Update the ata class in the resource entry
1119 * @res: resource entry struct
1120 * @proto: cfgte device bus protocol value
1121 *
1122 * Return value:
1123 * none
1124 **/
1125 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1126 {
1127 switch (proto) {
1128 case IPR_PROTO_SATA:
1129 case IPR_PROTO_SAS_STP:
1130 res->ata_class = ATA_DEV_ATA;
1131 break;
1132 case IPR_PROTO_SATA_ATAPI:
1133 case IPR_PROTO_SAS_STP_ATAPI:
1134 res->ata_class = ATA_DEV_ATAPI;
1135 break;
1136 default:
1137 res->ata_class = ATA_DEV_UNKNOWN;
1138 break;
1139 };
1140 }
1141
1142 /**
1143 * ipr_init_res_entry - Initialize a resource entry struct.
1144 * @res: resource entry struct
1145 * @cfgtew: config table entry wrapper struct
1146 *
1147 * Return value:
1148 * none
1149 **/
1150 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1151 struct ipr_config_table_entry_wrapper *cfgtew)
1152 {
1153 int found = 0;
1154 unsigned int proto;
1155 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1156 struct ipr_resource_entry *gscsi_res = NULL;
1157
1158 res->needs_sync_complete = 0;
1159 res->in_erp = 0;
1160 res->add_to_ml = 0;
1161 res->del_from_ml = 0;
1162 res->resetting_device = 0;
1163 res->reset_occurred = 0;
1164 res->sdev = NULL;
1165 res->sata_port = NULL;
1166
1167 if (ioa_cfg->sis64) {
1168 proto = cfgtew->u.cfgte64->proto;
1169 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1170 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1171 res->qmodel = IPR_QUEUEING_MODEL64(res);
1172 res->type = cfgtew->u.cfgte64->res_type;
1173
1174 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1175 sizeof(res->res_path));
1176
1177 res->bus = 0;
1178 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1179 sizeof(res->dev_lun.scsi_lun));
1180 res->lun = scsilun_to_int(&res->dev_lun);
1181
1182 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1183 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1184 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1185 found = 1;
1186 res->target = gscsi_res->target;
1187 break;
1188 }
1189 }
1190 if (!found) {
1191 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1192 ioa_cfg->max_devs_supported);
1193 set_bit(res->target, ioa_cfg->target_ids);
1194 }
1195 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1196 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1197 res->target = 0;
1198 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1199 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1200 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1201 ioa_cfg->max_devs_supported);
1202 set_bit(res->target, ioa_cfg->array_ids);
1203 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1204 res->bus = IPR_VSET_VIRTUAL_BUS;
1205 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1206 ioa_cfg->max_devs_supported);
1207 set_bit(res->target, ioa_cfg->vset_ids);
1208 } else {
1209 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1210 ioa_cfg->max_devs_supported);
1211 set_bit(res->target, ioa_cfg->target_ids);
1212 }
1213 } else {
1214 proto = cfgtew->u.cfgte->proto;
1215 res->qmodel = IPR_QUEUEING_MODEL(res);
1216 res->flags = cfgtew->u.cfgte->flags;
1217 if (res->flags & IPR_IS_IOA_RESOURCE)
1218 res->type = IPR_RES_TYPE_IOAFP;
1219 else
1220 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1221
1222 res->bus = cfgtew->u.cfgte->res_addr.bus;
1223 res->target = cfgtew->u.cfgte->res_addr.target;
1224 res->lun = cfgtew->u.cfgte->res_addr.lun;
1225 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1226 }
1227
1228 ipr_update_ata_class(res, proto);
1229 }
1230
1231 /**
1232 * ipr_is_same_device - Determine if two devices are the same.
1233 * @res: resource entry struct
1234 * @cfgtew: config table entry wrapper struct
1235 *
1236 * Return value:
1237 * 1 if the devices are the same / 0 otherwise
1238 **/
1239 static int ipr_is_same_device(struct ipr_resource_entry *res,
1240 struct ipr_config_table_entry_wrapper *cfgtew)
1241 {
1242 if (res->ioa_cfg->sis64) {
1243 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1244 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1245 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1246 sizeof(cfgtew->u.cfgte64->lun))) {
1247 return 1;
1248 }
1249 } else {
1250 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1251 res->target == cfgtew->u.cfgte->res_addr.target &&
1252 res->lun == cfgtew->u.cfgte->res_addr.lun)
1253 return 1;
1254 }
1255
1256 return 0;
1257 }
1258
1259 /**
1260 * __ipr_format_res_path - Format the resource path for printing.
1261 * @res_path: resource path
1262 * @buf: buffer
1263 * @len: length of buffer provided
1264 *
1265 * Return value:
1266 * pointer to buffer
1267 **/
1268 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1269 {
1270 int i;
1271 char *p = buffer;
1272
1273 *p = '\0';
1274 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1275 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1276 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1277
1278 return buffer;
1279 }
1280
1281 /**
1282 * ipr_format_res_path - Format the resource path for printing.
1283 * @ioa_cfg: ioa config struct
1284 * @res_path: resource path
1285 * @buf: buffer
1286 * @len: length of buffer provided
1287 *
1288 * Return value:
1289 * pointer to buffer
1290 **/
1291 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1292 u8 *res_path, char *buffer, int len)
1293 {
1294 char *p = buffer;
1295
1296 *p = '\0';
1297 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1298 __ipr_format_res_path(res_path, p, len - (buffer - p));
1299 return buffer;
1300 }
1301
1302 /**
1303 * ipr_update_res_entry - Update the resource entry.
1304 * @res: resource entry struct
1305 * @cfgtew: config table entry wrapper struct
1306 *
1307 * Return value:
1308 * none
1309 **/
1310 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1311 struct ipr_config_table_entry_wrapper *cfgtew)
1312 {
1313 char buffer[IPR_MAX_RES_PATH_LENGTH];
1314 unsigned int proto;
1315 int new_path = 0;
1316
1317 if (res->ioa_cfg->sis64) {
1318 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1319 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1320 res->type = cfgtew->u.cfgte64->res_type;
1321
1322 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1323 sizeof(struct ipr_std_inq_data));
1324
1325 res->qmodel = IPR_QUEUEING_MODEL64(res);
1326 proto = cfgtew->u.cfgte64->proto;
1327 res->res_handle = cfgtew->u.cfgte64->res_handle;
1328 res->dev_id = cfgtew->u.cfgte64->dev_id;
1329
1330 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1331 sizeof(res->dev_lun.scsi_lun));
1332
1333 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1334 sizeof(res->res_path))) {
1335 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1336 sizeof(res->res_path));
1337 new_path = 1;
1338 }
1339
1340 if (res->sdev && new_path)
1341 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1342 ipr_format_res_path(res->ioa_cfg,
1343 res->res_path, buffer, sizeof(buffer)));
1344 } else {
1345 res->flags = cfgtew->u.cfgte->flags;
1346 if (res->flags & IPR_IS_IOA_RESOURCE)
1347 res->type = IPR_RES_TYPE_IOAFP;
1348 else
1349 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1350
1351 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1352 sizeof(struct ipr_std_inq_data));
1353
1354 res->qmodel = IPR_QUEUEING_MODEL(res);
1355 proto = cfgtew->u.cfgte->proto;
1356 res->res_handle = cfgtew->u.cfgte->res_handle;
1357 }
1358
1359 ipr_update_ata_class(res, proto);
1360 }
1361
1362 /**
1363 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1364 * for the resource.
1365 * @res: resource entry struct
1366 * @cfgtew: config table entry wrapper struct
1367 *
1368 * Return value:
1369 * none
1370 **/
1371 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1372 {
1373 struct ipr_resource_entry *gscsi_res = NULL;
1374 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1375
1376 if (!ioa_cfg->sis64)
1377 return;
1378
1379 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1380 clear_bit(res->target, ioa_cfg->array_ids);
1381 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1382 clear_bit(res->target, ioa_cfg->vset_ids);
1383 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1384 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1385 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1386 return;
1387 clear_bit(res->target, ioa_cfg->target_ids);
1388
1389 } else if (res->bus == 0)
1390 clear_bit(res->target, ioa_cfg->target_ids);
1391 }
1392
1393 /**
1394 * ipr_handle_config_change - Handle a config change from the adapter
1395 * @ioa_cfg: ioa config struct
1396 * @hostrcb: hostrcb
1397 *
1398 * Return value:
1399 * none
1400 **/
1401 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1402 struct ipr_hostrcb *hostrcb)
1403 {
1404 struct ipr_resource_entry *res = NULL;
1405 struct ipr_config_table_entry_wrapper cfgtew;
1406 __be32 cc_res_handle;
1407
1408 u32 is_ndn = 1;
1409
1410 if (ioa_cfg->sis64) {
1411 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1412 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1413 } else {
1414 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1415 cc_res_handle = cfgtew.u.cfgte->res_handle;
1416 }
1417
1418 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1419 if (res->res_handle == cc_res_handle) {
1420 is_ndn = 0;
1421 break;
1422 }
1423 }
1424
1425 if (is_ndn) {
1426 if (list_empty(&ioa_cfg->free_res_q)) {
1427 ipr_send_hcam(ioa_cfg,
1428 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1429 hostrcb);
1430 return;
1431 }
1432
1433 res = list_entry(ioa_cfg->free_res_q.next,
1434 struct ipr_resource_entry, queue);
1435
1436 list_del(&res->queue);
1437 ipr_init_res_entry(res, &cfgtew);
1438 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1439 }
1440
1441 ipr_update_res_entry(res, &cfgtew);
1442
1443 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1444 if (res->sdev) {
1445 res->del_from_ml = 1;
1446 res->res_handle = IPR_INVALID_RES_HANDLE;
1447 schedule_work(&ioa_cfg->work_q);
1448 } else {
1449 ipr_clear_res_target(res);
1450 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1451 }
1452 } else if (!res->sdev || res->del_from_ml) {
1453 res->add_to_ml = 1;
1454 schedule_work(&ioa_cfg->work_q);
1455 }
1456
1457 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1458 }
1459
1460 /**
1461 * ipr_process_ccn - Op done function for a CCN.
1462 * @ipr_cmd: ipr command struct
1463 *
1464 * This function is the op done function for a configuration
1465 * change notification host controlled async from the adapter.
1466 *
1467 * Return value:
1468 * none
1469 **/
1470 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1471 {
1472 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1473 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1474 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1475
1476 list_del_init(&hostrcb->queue);
1477 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1478
1479 if (ioasc) {
1480 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1481 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1482 dev_err(&ioa_cfg->pdev->dev,
1483 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1484
1485 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1486 } else {
1487 ipr_handle_config_change(ioa_cfg, hostrcb);
1488 }
1489 }
1490
1491 /**
1492 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1493 * @i: index into buffer
1494 * @buf: string to modify
1495 *
1496 * This function will strip all trailing whitespace, pad the end
1497 * of the string with a single space, and NULL terminate the string.
1498 *
1499 * Return value:
1500 * new length of string
1501 **/
1502 static int strip_and_pad_whitespace(int i, char *buf)
1503 {
1504 while (i && buf[i] == ' ')
1505 i--;
1506 buf[i+1] = ' ';
1507 buf[i+2] = '\0';
1508 return i + 2;
1509 }
1510
1511 /**
1512 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1513 * @prefix: string to print at start of printk
1514 * @hostrcb: hostrcb pointer
1515 * @vpd: vendor/product id/sn struct
1516 *
1517 * Return value:
1518 * none
1519 **/
1520 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1521 struct ipr_vpd *vpd)
1522 {
1523 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1524 int i = 0;
1525
1526 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1527 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1528
1529 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1530 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1531
1532 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1533 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1534
1535 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1536 }
1537
1538 /**
1539 * ipr_log_vpd - Log the passed VPD to the error log.
1540 * @vpd: vendor/product id/sn struct
1541 *
1542 * Return value:
1543 * none
1544 **/
1545 static void ipr_log_vpd(struct ipr_vpd *vpd)
1546 {
1547 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1548 + IPR_SERIAL_NUM_LEN];
1549
1550 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1551 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1552 IPR_PROD_ID_LEN);
1553 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1554 ipr_err("Vendor/Product ID: %s\n", buffer);
1555
1556 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1557 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1558 ipr_err(" Serial Number: %s\n", buffer);
1559 }
1560
1561 /**
1562 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1563 * @prefix: string to print at start of printk
1564 * @hostrcb: hostrcb pointer
1565 * @vpd: vendor/product id/sn/wwn struct
1566 *
1567 * Return value:
1568 * none
1569 **/
1570 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1571 struct ipr_ext_vpd *vpd)
1572 {
1573 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1574 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1575 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1576 }
1577
1578 /**
1579 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1580 * @vpd: vendor/product id/sn/wwn struct
1581 *
1582 * Return value:
1583 * none
1584 **/
1585 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1586 {
1587 ipr_log_vpd(&vpd->vpd);
1588 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1589 be32_to_cpu(vpd->wwid[1]));
1590 }
1591
1592 /**
1593 * ipr_log_enhanced_cache_error - Log a cache error.
1594 * @ioa_cfg: ioa config struct
1595 * @hostrcb: hostrcb struct
1596 *
1597 * Return value:
1598 * none
1599 **/
1600 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1601 struct ipr_hostrcb *hostrcb)
1602 {
1603 struct ipr_hostrcb_type_12_error *error;
1604
1605 if (ioa_cfg->sis64)
1606 error = &hostrcb->hcam.u.error64.u.type_12_error;
1607 else
1608 error = &hostrcb->hcam.u.error.u.type_12_error;
1609
1610 ipr_err("-----Current Configuration-----\n");
1611 ipr_err("Cache Directory Card Information:\n");
1612 ipr_log_ext_vpd(&error->ioa_vpd);
1613 ipr_err("Adapter Card Information:\n");
1614 ipr_log_ext_vpd(&error->cfc_vpd);
1615
1616 ipr_err("-----Expected Configuration-----\n");
1617 ipr_err("Cache Directory Card Information:\n");
1618 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1619 ipr_err("Adapter Card Information:\n");
1620 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1621
1622 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1623 be32_to_cpu(error->ioa_data[0]),
1624 be32_to_cpu(error->ioa_data[1]),
1625 be32_to_cpu(error->ioa_data[2]));
1626 }
1627
1628 /**
1629 * ipr_log_cache_error - Log a cache error.
1630 * @ioa_cfg: ioa config struct
1631 * @hostrcb: hostrcb struct
1632 *
1633 * Return value:
1634 * none
1635 **/
1636 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1637 struct ipr_hostrcb *hostrcb)
1638 {
1639 struct ipr_hostrcb_type_02_error *error =
1640 &hostrcb->hcam.u.error.u.type_02_error;
1641
1642 ipr_err("-----Current Configuration-----\n");
1643 ipr_err("Cache Directory Card Information:\n");
1644 ipr_log_vpd(&error->ioa_vpd);
1645 ipr_err("Adapter Card Information:\n");
1646 ipr_log_vpd(&error->cfc_vpd);
1647
1648 ipr_err("-----Expected Configuration-----\n");
1649 ipr_err("Cache Directory Card Information:\n");
1650 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1651 ipr_err("Adapter Card Information:\n");
1652 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1653
1654 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1655 be32_to_cpu(error->ioa_data[0]),
1656 be32_to_cpu(error->ioa_data[1]),
1657 be32_to_cpu(error->ioa_data[2]));
1658 }
1659
1660 /**
1661 * ipr_log_enhanced_config_error - Log a configuration error.
1662 * @ioa_cfg: ioa config struct
1663 * @hostrcb: hostrcb struct
1664 *
1665 * Return value:
1666 * none
1667 **/
1668 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1669 struct ipr_hostrcb *hostrcb)
1670 {
1671 int errors_logged, i;
1672 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1673 struct ipr_hostrcb_type_13_error *error;
1674
1675 error = &hostrcb->hcam.u.error.u.type_13_error;
1676 errors_logged = be32_to_cpu(error->errors_logged);
1677
1678 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1679 be32_to_cpu(error->errors_detected), errors_logged);
1680
1681 dev_entry = error->dev;
1682
1683 for (i = 0; i < errors_logged; i++, dev_entry++) {
1684 ipr_err_separator;
1685
1686 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1687 ipr_log_ext_vpd(&dev_entry->vpd);
1688
1689 ipr_err("-----New Device Information-----\n");
1690 ipr_log_ext_vpd(&dev_entry->new_vpd);
1691
1692 ipr_err("Cache Directory Card Information:\n");
1693 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1694
1695 ipr_err("Adapter Card Information:\n");
1696 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1697 }
1698 }
1699
1700 /**
1701 * ipr_log_sis64_config_error - Log a device error.
1702 * @ioa_cfg: ioa config struct
1703 * @hostrcb: hostrcb struct
1704 *
1705 * Return value:
1706 * none
1707 **/
1708 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1709 struct ipr_hostrcb *hostrcb)
1710 {
1711 int errors_logged, i;
1712 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1713 struct ipr_hostrcb_type_23_error *error;
1714 char buffer[IPR_MAX_RES_PATH_LENGTH];
1715
1716 error = &hostrcb->hcam.u.error64.u.type_23_error;
1717 errors_logged = be32_to_cpu(error->errors_logged);
1718
1719 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1720 be32_to_cpu(error->errors_detected), errors_logged);
1721
1722 dev_entry = error->dev;
1723
1724 for (i = 0; i < errors_logged; i++, dev_entry++) {
1725 ipr_err_separator;
1726
1727 ipr_err("Device %d : %s", i + 1,
1728 __ipr_format_res_path(dev_entry->res_path,
1729 buffer, sizeof(buffer)));
1730 ipr_log_ext_vpd(&dev_entry->vpd);
1731
1732 ipr_err("-----New Device Information-----\n");
1733 ipr_log_ext_vpd(&dev_entry->new_vpd);
1734
1735 ipr_err("Cache Directory Card Information:\n");
1736 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1737
1738 ipr_err("Adapter Card Information:\n");
1739 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1740 }
1741 }
1742
1743 /**
1744 * ipr_log_config_error - Log a configuration error.
1745 * @ioa_cfg: ioa config struct
1746 * @hostrcb: hostrcb struct
1747 *
1748 * Return value:
1749 * none
1750 **/
1751 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1752 struct ipr_hostrcb *hostrcb)
1753 {
1754 int errors_logged, i;
1755 struct ipr_hostrcb_device_data_entry *dev_entry;
1756 struct ipr_hostrcb_type_03_error *error;
1757
1758 error = &hostrcb->hcam.u.error.u.type_03_error;
1759 errors_logged = be32_to_cpu(error->errors_logged);
1760
1761 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1762 be32_to_cpu(error->errors_detected), errors_logged);
1763
1764 dev_entry = error->dev;
1765
1766 for (i = 0; i < errors_logged; i++, dev_entry++) {
1767 ipr_err_separator;
1768
1769 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1770 ipr_log_vpd(&dev_entry->vpd);
1771
1772 ipr_err("-----New Device Information-----\n");
1773 ipr_log_vpd(&dev_entry->new_vpd);
1774
1775 ipr_err("Cache Directory Card Information:\n");
1776 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1777
1778 ipr_err("Adapter Card Information:\n");
1779 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1780
1781 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1782 be32_to_cpu(dev_entry->ioa_data[0]),
1783 be32_to_cpu(dev_entry->ioa_data[1]),
1784 be32_to_cpu(dev_entry->ioa_data[2]),
1785 be32_to_cpu(dev_entry->ioa_data[3]),
1786 be32_to_cpu(dev_entry->ioa_data[4]));
1787 }
1788 }
1789
1790 /**
1791 * ipr_log_enhanced_array_error - Log an array configuration error.
1792 * @ioa_cfg: ioa config struct
1793 * @hostrcb: hostrcb struct
1794 *
1795 * Return value:
1796 * none
1797 **/
1798 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1799 struct ipr_hostrcb *hostrcb)
1800 {
1801 int i, num_entries;
1802 struct ipr_hostrcb_type_14_error *error;
1803 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1804 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1805
1806 error = &hostrcb->hcam.u.error.u.type_14_error;
1807
1808 ipr_err_separator;
1809
1810 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1811 error->protection_level,
1812 ioa_cfg->host->host_no,
1813 error->last_func_vset_res_addr.bus,
1814 error->last_func_vset_res_addr.target,
1815 error->last_func_vset_res_addr.lun);
1816
1817 ipr_err_separator;
1818
1819 array_entry = error->array_member;
1820 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1821 ARRAY_SIZE(error->array_member));
1822
1823 for (i = 0; i < num_entries; i++, array_entry++) {
1824 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1825 continue;
1826
1827 if (be32_to_cpu(error->exposed_mode_adn) == i)
1828 ipr_err("Exposed Array Member %d:\n", i);
1829 else
1830 ipr_err("Array Member %d:\n", i);
1831
1832 ipr_log_ext_vpd(&array_entry->vpd);
1833 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1834 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1835 "Expected Location");
1836
1837 ipr_err_separator;
1838 }
1839 }
1840
1841 /**
1842 * ipr_log_array_error - Log an array configuration error.
1843 * @ioa_cfg: ioa config struct
1844 * @hostrcb: hostrcb struct
1845 *
1846 * Return value:
1847 * none
1848 **/
1849 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1850 struct ipr_hostrcb *hostrcb)
1851 {
1852 int i;
1853 struct ipr_hostrcb_type_04_error *error;
1854 struct ipr_hostrcb_array_data_entry *array_entry;
1855 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1856
1857 error = &hostrcb->hcam.u.error.u.type_04_error;
1858
1859 ipr_err_separator;
1860
1861 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1862 error->protection_level,
1863 ioa_cfg->host->host_no,
1864 error->last_func_vset_res_addr.bus,
1865 error->last_func_vset_res_addr.target,
1866 error->last_func_vset_res_addr.lun);
1867
1868 ipr_err_separator;
1869
1870 array_entry = error->array_member;
1871
1872 for (i = 0; i < 18; i++) {
1873 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1874 continue;
1875
1876 if (be32_to_cpu(error->exposed_mode_adn) == i)
1877 ipr_err("Exposed Array Member %d:\n", i);
1878 else
1879 ipr_err("Array Member %d:\n", i);
1880
1881 ipr_log_vpd(&array_entry->vpd);
1882
1883 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1884 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1885 "Expected Location");
1886
1887 ipr_err_separator;
1888
1889 if (i == 9)
1890 array_entry = error->array_member2;
1891 else
1892 array_entry++;
1893 }
1894 }
1895
1896 /**
1897 * ipr_log_hex_data - Log additional hex IOA error data.
1898 * @ioa_cfg: ioa config struct
1899 * @data: IOA error data
1900 * @len: data length
1901 *
1902 * Return value:
1903 * none
1904 **/
1905 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1906 {
1907 int i;
1908
1909 if (len == 0)
1910 return;
1911
1912 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1913 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1914
1915 for (i = 0; i < len / 4; i += 4) {
1916 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1917 be32_to_cpu(data[i]),
1918 be32_to_cpu(data[i+1]),
1919 be32_to_cpu(data[i+2]),
1920 be32_to_cpu(data[i+3]));
1921 }
1922 }
1923
1924 /**
1925 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1926 * @ioa_cfg: ioa config struct
1927 * @hostrcb: hostrcb struct
1928 *
1929 * Return value:
1930 * none
1931 **/
1932 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1933 struct ipr_hostrcb *hostrcb)
1934 {
1935 struct ipr_hostrcb_type_17_error *error;
1936
1937 if (ioa_cfg->sis64)
1938 error = &hostrcb->hcam.u.error64.u.type_17_error;
1939 else
1940 error = &hostrcb->hcam.u.error.u.type_17_error;
1941
1942 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1943 strim(error->failure_reason);
1944
1945 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1946 be32_to_cpu(hostrcb->hcam.u.error.prc));
1947 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1948 ipr_log_hex_data(ioa_cfg, error->data,
1949 be32_to_cpu(hostrcb->hcam.length) -
1950 (offsetof(struct ipr_hostrcb_error, u) +
1951 offsetof(struct ipr_hostrcb_type_17_error, data)));
1952 }
1953
1954 /**
1955 * ipr_log_dual_ioa_error - Log a dual adapter error.
1956 * @ioa_cfg: ioa config struct
1957 * @hostrcb: hostrcb struct
1958 *
1959 * Return value:
1960 * none
1961 **/
1962 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1963 struct ipr_hostrcb *hostrcb)
1964 {
1965 struct ipr_hostrcb_type_07_error *error;
1966
1967 error = &hostrcb->hcam.u.error.u.type_07_error;
1968 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1969 strim(error->failure_reason);
1970
1971 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1972 be32_to_cpu(hostrcb->hcam.u.error.prc));
1973 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1974 ipr_log_hex_data(ioa_cfg, error->data,
1975 be32_to_cpu(hostrcb->hcam.length) -
1976 (offsetof(struct ipr_hostrcb_error, u) +
1977 offsetof(struct ipr_hostrcb_type_07_error, data)));
1978 }
1979
1980 static const struct {
1981 u8 active;
1982 char *desc;
1983 } path_active_desc[] = {
1984 { IPR_PATH_NO_INFO, "Path" },
1985 { IPR_PATH_ACTIVE, "Active path" },
1986 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1987 };
1988
1989 static const struct {
1990 u8 state;
1991 char *desc;
1992 } path_state_desc[] = {
1993 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1994 { IPR_PATH_HEALTHY, "is healthy" },
1995 { IPR_PATH_DEGRADED, "is degraded" },
1996 { IPR_PATH_FAILED, "is failed" }
1997 };
1998
1999 /**
2000 * ipr_log_fabric_path - Log a fabric path error
2001 * @hostrcb: hostrcb struct
2002 * @fabric: fabric descriptor
2003 *
2004 * Return value:
2005 * none
2006 **/
2007 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2008 struct ipr_hostrcb_fabric_desc *fabric)
2009 {
2010 int i, j;
2011 u8 path_state = fabric->path_state;
2012 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2013 u8 state = path_state & IPR_PATH_STATE_MASK;
2014
2015 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2016 if (path_active_desc[i].active != active)
2017 continue;
2018
2019 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2020 if (path_state_desc[j].state != state)
2021 continue;
2022
2023 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2024 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2025 path_active_desc[i].desc, path_state_desc[j].desc,
2026 fabric->ioa_port);
2027 } else if (fabric->cascaded_expander == 0xff) {
2028 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2029 path_active_desc[i].desc, path_state_desc[j].desc,
2030 fabric->ioa_port, fabric->phy);
2031 } else if (fabric->phy == 0xff) {
2032 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2033 path_active_desc[i].desc, path_state_desc[j].desc,
2034 fabric->ioa_port, fabric->cascaded_expander);
2035 } else {
2036 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2037 path_active_desc[i].desc, path_state_desc[j].desc,
2038 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2039 }
2040 return;
2041 }
2042 }
2043
2044 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2045 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2046 }
2047
2048 /**
2049 * ipr_log64_fabric_path - Log a fabric path error
2050 * @hostrcb: hostrcb struct
2051 * @fabric: fabric descriptor
2052 *
2053 * Return value:
2054 * none
2055 **/
2056 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2057 struct ipr_hostrcb64_fabric_desc *fabric)
2058 {
2059 int i, j;
2060 u8 path_state = fabric->path_state;
2061 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2062 u8 state = path_state & IPR_PATH_STATE_MASK;
2063 char buffer[IPR_MAX_RES_PATH_LENGTH];
2064
2065 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2066 if (path_active_desc[i].active != active)
2067 continue;
2068
2069 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2070 if (path_state_desc[j].state != state)
2071 continue;
2072
2073 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2074 path_active_desc[i].desc, path_state_desc[j].desc,
2075 ipr_format_res_path(hostrcb->ioa_cfg,
2076 fabric->res_path,
2077 buffer, sizeof(buffer)));
2078 return;
2079 }
2080 }
2081
2082 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2083 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2084 buffer, sizeof(buffer)));
2085 }
2086
2087 static const struct {
2088 u8 type;
2089 char *desc;
2090 } path_type_desc[] = {
2091 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2092 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2093 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2094 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2095 };
2096
2097 static const struct {
2098 u8 status;
2099 char *desc;
2100 } path_status_desc[] = {
2101 { IPR_PATH_CFG_NO_PROB, "Functional" },
2102 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2103 { IPR_PATH_CFG_FAILED, "Failed" },
2104 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2105 { IPR_PATH_NOT_DETECTED, "Missing" },
2106 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2107 };
2108
2109 static const char *link_rate[] = {
2110 "unknown",
2111 "disabled",
2112 "phy reset problem",
2113 "spinup hold",
2114 "port selector",
2115 "unknown",
2116 "unknown",
2117 "unknown",
2118 "1.5Gbps",
2119 "3.0Gbps",
2120 "unknown",
2121 "unknown",
2122 "unknown",
2123 "unknown",
2124 "unknown",
2125 "unknown"
2126 };
2127
2128 /**
2129 * ipr_log_path_elem - Log a fabric path element.
2130 * @hostrcb: hostrcb struct
2131 * @cfg: fabric path element struct
2132 *
2133 * Return value:
2134 * none
2135 **/
2136 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2137 struct ipr_hostrcb_config_element *cfg)
2138 {
2139 int i, j;
2140 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2141 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2142
2143 if (type == IPR_PATH_CFG_NOT_EXIST)
2144 return;
2145
2146 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2147 if (path_type_desc[i].type != type)
2148 continue;
2149
2150 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2151 if (path_status_desc[j].status != status)
2152 continue;
2153
2154 if (type == IPR_PATH_CFG_IOA_PORT) {
2155 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2156 path_status_desc[j].desc, path_type_desc[i].desc,
2157 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2158 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2159 } else {
2160 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2161 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2162 path_status_desc[j].desc, path_type_desc[i].desc,
2163 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2164 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2165 } else if (cfg->cascaded_expander == 0xff) {
2166 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2167 "WWN=%08X%08X\n", path_status_desc[j].desc,
2168 path_type_desc[i].desc, cfg->phy,
2169 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2170 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2171 } else if (cfg->phy == 0xff) {
2172 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2173 "WWN=%08X%08X\n", path_status_desc[j].desc,
2174 path_type_desc[i].desc, cfg->cascaded_expander,
2175 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2176 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2177 } else {
2178 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2179 "WWN=%08X%08X\n", path_status_desc[j].desc,
2180 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2181 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2182 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2183 }
2184 }
2185 return;
2186 }
2187 }
2188
2189 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2190 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2191 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2192 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2193 }
2194
2195 /**
2196 * ipr_log64_path_elem - Log a fabric path element.
2197 * @hostrcb: hostrcb struct
2198 * @cfg: fabric path element struct
2199 *
2200 * Return value:
2201 * none
2202 **/
2203 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2204 struct ipr_hostrcb64_config_element *cfg)
2205 {
2206 int i, j;
2207 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2208 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2209 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2210 char buffer[IPR_MAX_RES_PATH_LENGTH];
2211
2212 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2213 return;
2214
2215 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2216 if (path_type_desc[i].type != type)
2217 continue;
2218
2219 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2220 if (path_status_desc[j].status != status)
2221 continue;
2222
2223 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2224 path_status_desc[j].desc, path_type_desc[i].desc,
2225 ipr_format_res_path(hostrcb->ioa_cfg,
2226 cfg->res_path, buffer, sizeof(buffer)),
2227 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2228 be32_to_cpu(cfg->wwid[0]),
2229 be32_to_cpu(cfg->wwid[1]));
2230 return;
2231 }
2232 }
2233 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2234 "WWN=%08X%08X\n", cfg->type_status,
2235 ipr_format_res_path(hostrcb->ioa_cfg,
2236 cfg->res_path, buffer, sizeof(buffer)),
2237 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2238 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2239 }
2240
2241 /**
2242 * ipr_log_fabric_error - Log a fabric error.
2243 * @ioa_cfg: ioa config struct
2244 * @hostrcb: hostrcb struct
2245 *
2246 * Return value:
2247 * none
2248 **/
2249 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2250 struct ipr_hostrcb *hostrcb)
2251 {
2252 struct ipr_hostrcb_type_20_error *error;
2253 struct ipr_hostrcb_fabric_desc *fabric;
2254 struct ipr_hostrcb_config_element *cfg;
2255 int i, add_len;
2256
2257 error = &hostrcb->hcam.u.error.u.type_20_error;
2258 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2259 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2260
2261 add_len = be32_to_cpu(hostrcb->hcam.length) -
2262 (offsetof(struct ipr_hostrcb_error, u) +
2263 offsetof(struct ipr_hostrcb_type_20_error, desc));
2264
2265 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2266 ipr_log_fabric_path(hostrcb, fabric);
2267 for_each_fabric_cfg(fabric, cfg)
2268 ipr_log_path_elem(hostrcb, cfg);
2269
2270 add_len -= be16_to_cpu(fabric->length);
2271 fabric = (struct ipr_hostrcb_fabric_desc *)
2272 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2273 }
2274
2275 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2276 }
2277
2278 /**
2279 * ipr_log_sis64_array_error - Log a sis64 array error.
2280 * @ioa_cfg: ioa config struct
2281 * @hostrcb: hostrcb struct
2282 *
2283 * Return value:
2284 * none
2285 **/
2286 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2287 struct ipr_hostrcb *hostrcb)
2288 {
2289 int i, num_entries;
2290 struct ipr_hostrcb_type_24_error *error;
2291 struct ipr_hostrcb64_array_data_entry *array_entry;
2292 char buffer[IPR_MAX_RES_PATH_LENGTH];
2293 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2294
2295 error = &hostrcb->hcam.u.error64.u.type_24_error;
2296
2297 ipr_err_separator;
2298
2299 ipr_err("RAID %s Array Configuration: %s\n",
2300 error->protection_level,
2301 ipr_format_res_path(ioa_cfg, error->last_res_path,
2302 buffer, sizeof(buffer)));
2303
2304 ipr_err_separator;
2305
2306 array_entry = error->array_member;
2307 num_entries = min_t(u32, error->num_entries,
2308 ARRAY_SIZE(error->array_member));
2309
2310 for (i = 0; i < num_entries; i++, array_entry++) {
2311
2312 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2313 continue;
2314
2315 if (error->exposed_mode_adn == i)
2316 ipr_err("Exposed Array Member %d:\n", i);
2317 else
2318 ipr_err("Array Member %d:\n", i);
2319
2320 ipr_err("Array Member %d:\n", i);
2321 ipr_log_ext_vpd(&array_entry->vpd);
2322 ipr_err("Current Location: %s\n",
2323 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2324 buffer, sizeof(buffer)));
2325 ipr_err("Expected Location: %s\n",
2326 ipr_format_res_path(ioa_cfg,
2327 array_entry->expected_res_path,
2328 buffer, sizeof(buffer)));
2329
2330 ipr_err_separator;
2331 }
2332 }
2333
2334 /**
2335 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2336 * @ioa_cfg: ioa config struct
2337 * @hostrcb: hostrcb struct
2338 *
2339 * Return value:
2340 * none
2341 **/
2342 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2343 struct ipr_hostrcb *hostrcb)
2344 {
2345 struct ipr_hostrcb_type_30_error *error;
2346 struct ipr_hostrcb64_fabric_desc *fabric;
2347 struct ipr_hostrcb64_config_element *cfg;
2348 int i, add_len;
2349
2350 error = &hostrcb->hcam.u.error64.u.type_30_error;
2351
2352 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2353 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2354
2355 add_len = be32_to_cpu(hostrcb->hcam.length) -
2356 (offsetof(struct ipr_hostrcb64_error, u) +
2357 offsetof(struct ipr_hostrcb_type_30_error, desc));
2358
2359 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2360 ipr_log64_fabric_path(hostrcb, fabric);
2361 for_each_fabric_cfg(fabric, cfg)
2362 ipr_log64_path_elem(hostrcb, cfg);
2363
2364 add_len -= be16_to_cpu(fabric->length);
2365 fabric = (struct ipr_hostrcb64_fabric_desc *)
2366 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2367 }
2368
2369 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2370 }
2371
2372 /**
2373 * ipr_log_generic_error - Log an adapter error.
2374 * @ioa_cfg: ioa config struct
2375 * @hostrcb: hostrcb struct
2376 *
2377 * Return value:
2378 * none
2379 **/
2380 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2381 struct ipr_hostrcb *hostrcb)
2382 {
2383 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2384 be32_to_cpu(hostrcb->hcam.length));
2385 }
2386
2387 /**
2388 * ipr_log_sis64_device_error - Log a cache error.
2389 * @ioa_cfg: ioa config struct
2390 * @hostrcb: hostrcb struct
2391 *
2392 * Return value:
2393 * none
2394 **/
2395 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2396 struct ipr_hostrcb *hostrcb)
2397 {
2398 struct ipr_hostrcb_type_21_error *error;
2399 char buffer[IPR_MAX_RES_PATH_LENGTH];
2400
2401 error = &hostrcb->hcam.u.error64.u.type_21_error;
2402
2403 ipr_err("-----Failing Device Information-----\n");
2404 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2405 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2406 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2407 ipr_err("Device Resource Path: %s\n",
2408 __ipr_format_res_path(error->res_path,
2409 buffer, sizeof(buffer)));
2410 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2411 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2412 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2413 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc);
2414 ipr_err("SCSI Sense Data:\n");
2415 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2416 ipr_err("SCSI Command Descriptor Block: \n");
2417 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2418
2419 ipr_err("Additional IOA Data:\n");
2420 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2421 }
2422
2423 /**
2424 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2425 * @ioasc: IOASC
2426 *
2427 * This function will return the index of into the ipr_error_table
2428 * for the specified IOASC. If the IOASC is not in the table,
2429 * 0 will be returned, which points to the entry used for unknown errors.
2430 *
2431 * Return value:
2432 * index into the ipr_error_table
2433 **/
2434 static u32 ipr_get_error(u32 ioasc)
2435 {
2436 int i;
2437
2438 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2439 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2440 return i;
2441
2442 return 0;
2443 }
2444
2445 /**
2446 * ipr_handle_log_data - Log an adapter error.
2447 * @ioa_cfg: ioa config struct
2448 * @hostrcb: hostrcb struct
2449 *
2450 * This function logs an adapter error to the system.
2451 *
2452 * Return value:
2453 * none
2454 **/
2455 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2456 struct ipr_hostrcb *hostrcb)
2457 {
2458 u32 ioasc;
2459 int error_index;
2460 struct ipr_hostrcb_type_21_error *error;
2461
2462 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2463 return;
2464
2465 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2466 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2467
2468 if (ioa_cfg->sis64)
2469 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2470 else
2471 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2472
2473 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2474 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2475 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2476 scsi_report_bus_reset(ioa_cfg->host,
2477 hostrcb->hcam.u.error.fd_res_addr.bus);
2478 }
2479
2480 error_index = ipr_get_error(ioasc);
2481
2482 if (!ipr_error_table[error_index].log_hcam)
2483 return;
2484
2485 if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2486 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2487 error = &hostrcb->hcam.u.error64.u.type_21_error;
2488
2489 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2490 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2491 return;
2492 }
2493
2494 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2495
2496 /* Set indication we have logged an error */
2497 ioa_cfg->errors_logged++;
2498
2499 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2500 return;
2501 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2502 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2503
2504 switch (hostrcb->hcam.overlay_id) {
2505 case IPR_HOST_RCB_OVERLAY_ID_2:
2506 ipr_log_cache_error(ioa_cfg, hostrcb);
2507 break;
2508 case IPR_HOST_RCB_OVERLAY_ID_3:
2509 ipr_log_config_error(ioa_cfg, hostrcb);
2510 break;
2511 case IPR_HOST_RCB_OVERLAY_ID_4:
2512 case IPR_HOST_RCB_OVERLAY_ID_6:
2513 ipr_log_array_error(ioa_cfg, hostrcb);
2514 break;
2515 case IPR_HOST_RCB_OVERLAY_ID_7:
2516 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2517 break;
2518 case IPR_HOST_RCB_OVERLAY_ID_12:
2519 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2520 break;
2521 case IPR_HOST_RCB_OVERLAY_ID_13:
2522 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2523 break;
2524 case IPR_HOST_RCB_OVERLAY_ID_14:
2525 case IPR_HOST_RCB_OVERLAY_ID_16:
2526 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2527 break;
2528 case IPR_HOST_RCB_OVERLAY_ID_17:
2529 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2530 break;
2531 case IPR_HOST_RCB_OVERLAY_ID_20:
2532 ipr_log_fabric_error(ioa_cfg, hostrcb);
2533 break;
2534 case IPR_HOST_RCB_OVERLAY_ID_21:
2535 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2536 break;
2537 case IPR_HOST_RCB_OVERLAY_ID_23:
2538 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2539 break;
2540 case IPR_HOST_RCB_OVERLAY_ID_24:
2541 case IPR_HOST_RCB_OVERLAY_ID_26:
2542 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2543 break;
2544 case IPR_HOST_RCB_OVERLAY_ID_30:
2545 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2546 break;
2547 case IPR_HOST_RCB_OVERLAY_ID_1:
2548 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2549 default:
2550 ipr_log_generic_error(ioa_cfg, hostrcb);
2551 break;
2552 }
2553 }
2554
2555 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa)
2556 {
2557 struct ipr_hostrcb *hostrcb;
2558
2559 hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q,
2560 struct ipr_hostrcb, queue);
2561
2562 if (unlikely(!hostrcb)) {
2563 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers.");
2564 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q,
2565 struct ipr_hostrcb, queue);
2566 }
2567
2568 list_del_init(&hostrcb->queue);
2569 return hostrcb;
2570 }
2571
2572 /**
2573 * ipr_process_error - Op done function for an adapter error log.
2574 * @ipr_cmd: ipr command struct
2575 *
2576 * This function is the op done function for an error log host
2577 * controlled async from the adapter. It will log the error and
2578 * send the HCAM back to the adapter.
2579 *
2580 * Return value:
2581 * none
2582 **/
2583 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2584 {
2585 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2586 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2587 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2588 u32 fd_ioasc;
2589
2590 if (ioa_cfg->sis64)
2591 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2592 else
2593 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2594
2595 list_del_init(&hostrcb->queue);
2596 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2597
2598 if (!ioasc) {
2599 ipr_handle_log_data(ioa_cfg, hostrcb);
2600 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2601 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2602 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2603 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2604 dev_err(&ioa_cfg->pdev->dev,
2605 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2606 }
2607
2608 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q);
2609 schedule_work(&ioa_cfg->work_q);
2610 hostrcb = ipr_get_free_hostrcb(ioa_cfg);
2611
2612 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2613 }
2614
2615 /**
2616 * ipr_timeout - An internally generated op has timed out.
2617 * @ipr_cmd: ipr command struct
2618 *
2619 * This function blocks host requests and initiates an
2620 * adapter reset.
2621 *
2622 * Return value:
2623 * none
2624 **/
2625 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2626 {
2627 unsigned long lock_flags = 0;
2628 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2629
2630 ENTER;
2631 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2632
2633 ioa_cfg->errors_logged++;
2634 dev_err(&ioa_cfg->pdev->dev,
2635 "Adapter being reset due to command timeout.\n");
2636
2637 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2638 ioa_cfg->sdt_state = GET_DUMP;
2639
2640 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2641 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2642
2643 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2644 LEAVE;
2645 }
2646
2647 /**
2648 * ipr_oper_timeout - Adapter timed out transitioning to operational
2649 * @ipr_cmd: ipr command struct
2650 *
2651 * This function blocks host requests and initiates an
2652 * adapter reset.
2653 *
2654 * Return value:
2655 * none
2656 **/
2657 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2658 {
2659 unsigned long lock_flags = 0;
2660 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2661
2662 ENTER;
2663 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2664
2665 ioa_cfg->errors_logged++;
2666 dev_err(&ioa_cfg->pdev->dev,
2667 "Adapter timed out transitioning to operational.\n");
2668
2669 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2670 ioa_cfg->sdt_state = GET_DUMP;
2671
2672 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2673 if (ipr_fastfail)
2674 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2675 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2676 }
2677
2678 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2679 LEAVE;
2680 }
2681
2682 /**
2683 * ipr_find_ses_entry - Find matching SES in SES table
2684 * @res: resource entry struct of SES
2685 *
2686 * Return value:
2687 * pointer to SES table entry / NULL on failure
2688 **/
2689 static const struct ipr_ses_table_entry *
2690 ipr_find_ses_entry(struct ipr_resource_entry *res)
2691 {
2692 int i, j, matches;
2693 struct ipr_std_inq_vpids *vpids;
2694 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2695
2696 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2697 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2698 if (ste->compare_product_id_byte[j] == 'X') {
2699 vpids = &res->std_inq_data.vpids;
2700 if (vpids->product_id[j] == ste->product_id[j])
2701 matches++;
2702 else
2703 break;
2704 } else
2705 matches++;
2706 }
2707
2708 if (matches == IPR_PROD_ID_LEN)
2709 return ste;
2710 }
2711
2712 return NULL;
2713 }
2714
2715 /**
2716 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2717 * @ioa_cfg: ioa config struct
2718 * @bus: SCSI bus
2719 * @bus_width: bus width
2720 *
2721 * Return value:
2722 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2723 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2724 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2725 * max 160MHz = max 320MB/sec).
2726 **/
2727 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2728 {
2729 struct ipr_resource_entry *res;
2730 const struct ipr_ses_table_entry *ste;
2731 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2732
2733 /* Loop through each config table entry in the config table buffer */
2734 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2735 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2736 continue;
2737
2738 if (bus != res->bus)
2739 continue;
2740
2741 if (!(ste = ipr_find_ses_entry(res)))
2742 continue;
2743
2744 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2745 }
2746
2747 return max_xfer_rate;
2748 }
2749
2750 /**
2751 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2752 * @ioa_cfg: ioa config struct
2753 * @max_delay: max delay in micro-seconds to wait
2754 *
2755 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2756 *
2757 * Return value:
2758 * 0 on success / other on failure
2759 **/
2760 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2761 {
2762 volatile u32 pcii_reg;
2763 int delay = 1;
2764
2765 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2766 while (delay < max_delay) {
2767 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2768
2769 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2770 return 0;
2771
2772 /* udelay cannot be used if delay is more than a few milliseconds */
2773 if ((delay / 1000) > MAX_UDELAY_MS)
2774 mdelay(delay / 1000);
2775 else
2776 udelay(delay);
2777
2778 delay += delay;
2779 }
2780 return -EIO;
2781 }
2782
2783 /**
2784 * ipr_get_sis64_dump_data_section - Dump IOA memory
2785 * @ioa_cfg: ioa config struct
2786 * @start_addr: adapter address to dump
2787 * @dest: destination kernel buffer
2788 * @length_in_words: length to dump in 4 byte words
2789 *
2790 * Return value:
2791 * 0 on success
2792 **/
2793 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2794 u32 start_addr,
2795 __be32 *dest, u32 length_in_words)
2796 {
2797 int i;
2798
2799 for (i = 0; i < length_in_words; i++) {
2800 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2801 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2802 dest++;
2803 }
2804
2805 return 0;
2806 }
2807
2808 /**
2809 * ipr_get_ldump_data_section - Dump IOA memory
2810 * @ioa_cfg: ioa config struct
2811 * @start_addr: adapter address to dump
2812 * @dest: destination kernel buffer
2813 * @length_in_words: length to dump in 4 byte words
2814 *
2815 * Return value:
2816 * 0 on success / -EIO on failure
2817 **/
2818 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2819 u32 start_addr,
2820 __be32 *dest, u32 length_in_words)
2821 {
2822 volatile u32 temp_pcii_reg;
2823 int i, delay = 0;
2824
2825 if (ioa_cfg->sis64)
2826 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2827 dest, length_in_words);
2828
2829 /* Write IOA interrupt reg starting LDUMP state */
2830 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2831 ioa_cfg->regs.set_uproc_interrupt_reg32);
2832
2833 /* Wait for IO debug acknowledge */
2834 if (ipr_wait_iodbg_ack(ioa_cfg,
2835 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2836 dev_err(&ioa_cfg->pdev->dev,
2837 "IOA dump long data transfer timeout\n");
2838 return -EIO;
2839 }
2840
2841 /* Signal LDUMP interlocked - clear IO debug ack */
2842 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2843 ioa_cfg->regs.clr_interrupt_reg);
2844
2845 /* Write Mailbox with starting address */
2846 writel(start_addr, ioa_cfg->ioa_mailbox);
2847
2848 /* Signal address valid - clear IOA Reset alert */
2849 writel(IPR_UPROCI_RESET_ALERT,
2850 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2851
2852 for (i = 0; i < length_in_words; i++) {
2853 /* Wait for IO debug acknowledge */
2854 if (ipr_wait_iodbg_ack(ioa_cfg,
2855 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2856 dev_err(&ioa_cfg->pdev->dev,
2857 "IOA dump short data transfer timeout\n");
2858 return -EIO;
2859 }
2860
2861 /* Read data from mailbox and increment destination pointer */
2862 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2863 dest++;
2864
2865 /* For all but the last word of data, signal data received */
2866 if (i < (length_in_words - 1)) {
2867 /* Signal dump data received - Clear IO debug Ack */
2868 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2869 ioa_cfg->regs.clr_interrupt_reg);
2870 }
2871 }
2872
2873 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2874 writel(IPR_UPROCI_RESET_ALERT,
2875 ioa_cfg->regs.set_uproc_interrupt_reg32);
2876
2877 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2878 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2879
2880 /* Signal dump data received - Clear IO debug Ack */
2881 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2882 ioa_cfg->regs.clr_interrupt_reg);
2883
2884 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2885 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2886 temp_pcii_reg =
2887 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2888
2889 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2890 return 0;
2891
2892 udelay(10);
2893 delay += 10;
2894 }
2895
2896 return 0;
2897 }
2898
2899 #ifdef CONFIG_SCSI_IPR_DUMP
2900 /**
2901 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2902 * @ioa_cfg: ioa config struct
2903 * @pci_address: adapter address
2904 * @length: length of data to copy
2905 *
2906 * Copy data from PCI adapter to kernel buffer.
2907 * Note: length MUST be a 4 byte multiple
2908 * Return value:
2909 * 0 on success / other on failure
2910 **/
2911 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2912 unsigned long pci_address, u32 length)
2913 {
2914 int bytes_copied = 0;
2915 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2916 __be32 *page;
2917 unsigned long lock_flags = 0;
2918 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2919
2920 if (ioa_cfg->sis64)
2921 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2922 else
2923 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2924
2925 while (bytes_copied < length &&
2926 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2927 if (ioa_dump->page_offset >= PAGE_SIZE ||
2928 ioa_dump->page_offset == 0) {
2929 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2930
2931 if (!page) {
2932 ipr_trace;
2933 return bytes_copied;
2934 }
2935
2936 ioa_dump->page_offset = 0;
2937 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2938 ioa_dump->next_page_index++;
2939 } else
2940 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2941
2942 rem_len = length - bytes_copied;
2943 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2944 cur_len = min(rem_len, rem_page_len);
2945
2946 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2947 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2948 rc = -EIO;
2949 } else {
2950 rc = ipr_get_ldump_data_section(ioa_cfg,
2951 pci_address + bytes_copied,
2952 &page[ioa_dump->page_offset / 4],
2953 (cur_len / sizeof(u32)));
2954 }
2955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2956
2957 if (!rc) {
2958 ioa_dump->page_offset += cur_len;
2959 bytes_copied += cur_len;
2960 } else {
2961 ipr_trace;
2962 break;
2963 }
2964 schedule();
2965 }
2966
2967 return bytes_copied;
2968 }
2969
2970 /**
2971 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2972 * @hdr: dump entry header struct
2973 *
2974 * Return value:
2975 * nothing
2976 **/
2977 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2978 {
2979 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2980 hdr->num_elems = 1;
2981 hdr->offset = sizeof(*hdr);
2982 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2983 }
2984
2985 /**
2986 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2987 * @ioa_cfg: ioa config struct
2988 * @driver_dump: driver dump struct
2989 *
2990 * Return value:
2991 * nothing
2992 **/
2993 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2994 struct ipr_driver_dump *driver_dump)
2995 {
2996 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2997
2998 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2999 driver_dump->ioa_type_entry.hdr.len =
3000 sizeof(struct ipr_dump_ioa_type_entry) -
3001 sizeof(struct ipr_dump_entry_header);
3002 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3003 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
3004 driver_dump->ioa_type_entry.type = ioa_cfg->type;
3005 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
3006 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
3007 ucode_vpd->minor_release[1];
3008 driver_dump->hdr.num_entries++;
3009 }
3010
3011 /**
3012 * ipr_dump_version_data - Fill in the driver version in the dump.
3013 * @ioa_cfg: ioa config struct
3014 * @driver_dump: driver dump struct
3015 *
3016 * Return value:
3017 * nothing
3018 **/
3019 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
3020 struct ipr_driver_dump *driver_dump)
3021 {
3022 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3023 driver_dump->version_entry.hdr.len =
3024 sizeof(struct ipr_dump_version_entry) -
3025 sizeof(struct ipr_dump_entry_header);
3026 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3027 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3028 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3029 driver_dump->hdr.num_entries++;
3030 }
3031
3032 /**
3033 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3034 * @ioa_cfg: ioa config struct
3035 * @driver_dump: driver dump struct
3036 *
3037 * Return value:
3038 * nothing
3039 **/
3040 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3041 struct ipr_driver_dump *driver_dump)
3042 {
3043 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3044 driver_dump->trace_entry.hdr.len =
3045 sizeof(struct ipr_dump_trace_entry) -
3046 sizeof(struct ipr_dump_entry_header);
3047 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3048 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3049 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3050 driver_dump->hdr.num_entries++;
3051 }
3052
3053 /**
3054 * ipr_dump_location_data - Fill in the IOA location in the dump.
3055 * @ioa_cfg: ioa config struct
3056 * @driver_dump: driver dump struct
3057 *
3058 * Return value:
3059 * nothing
3060 **/
3061 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3062 struct ipr_driver_dump *driver_dump)
3063 {
3064 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3065 driver_dump->location_entry.hdr.len =
3066 sizeof(struct ipr_dump_location_entry) -
3067 sizeof(struct ipr_dump_entry_header);
3068 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3069 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3070 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3071 driver_dump->hdr.num_entries++;
3072 }
3073
3074 /**
3075 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3076 * @ioa_cfg: ioa config struct
3077 * @dump: dump struct
3078 *
3079 * Return value:
3080 * nothing
3081 **/
3082 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3083 {
3084 unsigned long start_addr, sdt_word;
3085 unsigned long lock_flags = 0;
3086 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3087 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3088 u32 num_entries, max_num_entries, start_off, end_off;
3089 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3090 struct ipr_sdt *sdt;
3091 int valid = 1;
3092 int i;
3093
3094 ENTER;
3095
3096 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3097
3098 if (ioa_cfg->sdt_state != READ_DUMP) {
3099 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3100 return;
3101 }
3102
3103 if (ioa_cfg->sis64) {
3104 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3105 ssleep(IPR_DUMP_DELAY_SECONDS);
3106 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3107 }
3108
3109 start_addr = readl(ioa_cfg->ioa_mailbox);
3110
3111 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3112 dev_err(&ioa_cfg->pdev->dev,
3113 "Invalid dump table format: %lx\n", start_addr);
3114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3115 return;
3116 }
3117
3118 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3119
3120 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3121
3122 /* Initialize the overall dump header */
3123 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3124 driver_dump->hdr.num_entries = 1;
3125 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3126 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3127 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3128 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3129
3130 ipr_dump_version_data(ioa_cfg, driver_dump);
3131 ipr_dump_location_data(ioa_cfg, driver_dump);
3132 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3133 ipr_dump_trace_data(ioa_cfg, driver_dump);
3134
3135 /* Update dump_header */
3136 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3137
3138 /* IOA Dump entry */
3139 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3140 ioa_dump->hdr.len = 0;
3141 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3142 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3143
3144 /* First entries in sdt are actually a list of dump addresses and
3145 lengths to gather the real dump data. sdt represents the pointer
3146 to the ioa generated dump table. Dump data will be extracted based
3147 on entries in this table */
3148 sdt = &ioa_dump->sdt;
3149
3150 if (ioa_cfg->sis64) {
3151 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3152 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3153 } else {
3154 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3155 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3156 }
3157
3158 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3159 (max_num_entries * sizeof(struct ipr_sdt_entry));
3160 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3161 bytes_to_copy / sizeof(__be32));
3162
3163 /* Smart Dump table is ready to use and the first entry is valid */
3164 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3165 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3166 dev_err(&ioa_cfg->pdev->dev,
3167 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3168 rc, be32_to_cpu(sdt->hdr.state));
3169 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3170 ioa_cfg->sdt_state = DUMP_OBTAINED;
3171 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3172 return;
3173 }
3174
3175 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3176
3177 if (num_entries > max_num_entries)
3178 num_entries = max_num_entries;
3179
3180 /* Update dump length to the actual data to be copied */
3181 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3182 if (ioa_cfg->sis64)
3183 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3184 else
3185 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3186
3187 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3188
3189 for (i = 0; i < num_entries; i++) {
3190 if (ioa_dump->hdr.len > max_dump_size) {
3191 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3192 break;
3193 }
3194
3195 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3196 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3197 if (ioa_cfg->sis64)
3198 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3199 else {
3200 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3201 end_off = be32_to_cpu(sdt->entry[i].end_token);
3202
3203 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3204 bytes_to_copy = end_off - start_off;
3205 else
3206 valid = 0;
3207 }
3208 if (valid) {
3209 if (bytes_to_copy > max_dump_size) {
3210 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3211 continue;
3212 }
3213
3214 /* Copy data from adapter to driver buffers */
3215 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3216 bytes_to_copy);
3217
3218 ioa_dump->hdr.len += bytes_copied;
3219
3220 if (bytes_copied != bytes_to_copy) {
3221 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3222 break;
3223 }
3224 }
3225 }
3226 }
3227
3228 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3229
3230 /* Update dump_header */
3231 driver_dump->hdr.len += ioa_dump->hdr.len;
3232 wmb();
3233 ioa_cfg->sdt_state = DUMP_OBTAINED;
3234 LEAVE;
3235 }
3236
3237 #else
3238 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3239 #endif
3240
3241 /**
3242 * ipr_release_dump - Free adapter dump memory
3243 * @kref: kref struct
3244 *
3245 * Return value:
3246 * nothing
3247 **/
3248 static void ipr_release_dump(struct kref *kref)
3249 {
3250 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3251 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3252 unsigned long lock_flags = 0;
3253 int i;
3254
3255 ENTER;
3256 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3257 ioa_cfg->dump = NULL;
3258 ioa_cfg->sdt_state = INACTIVE;
3259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3260
3261 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3262 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3263
3264 vfree(dump->ioa_dump.ioa_data);
3265 kfree(dump);
3266 LEAVE;
3267 }
3268
3269 /**
3270 * ipr_worker_thread - Worker thread
3271 * @work: ioa config struct
3272 *
3273 * Called at task level from a work thread. This function takes care
3274 * of adding and removing device from the mid-layer as configuration
3275 * changes are detected by the adapter.
3276 *
3277 * Return value:
3278 * nothing
3279 **/
3280 static void ipr_worker_thread(struct work_struct *work)
3281 {
3282 unsigned long lock_flags;
3283 struct ipr_resource_entry *res;
3284 struct scsi_device *sdev;
3285 struct ipr_dump *dump;
3286 struct ipr_ioa_cfg *ioa_cfg =
3287 container_of(work, struct ipr_ioa_cfg, work_q);
3288 u8 bus, target, lun;
3289 int did_work;
3290
3291 ENTER;
3292 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3293
3294 if (ioa_cfg->sdt_state == READ_DUMP) {
3295 dump = ioa_cfg->dump;
3296 if (!dump) {
3297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3298 return;
3299 }
3300 kref_get(&dump->kref);
3301 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3302 ipr_get_ioa_dump(ioa_cfg, dump);
3303 kref_put(&dump->kref, ipr_release_dump);
3304
3305 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3306 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3307 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3308 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3309 return;
3310 }
3311
3312 if (!ioa_cfg->scan_enabled) {
3313 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3314 return;
3315 }
3316
3317 restart:
3318 do {
3319 did_work = 0;
3320 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3321 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3322 return;
3323 }
3324
3325 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3326 if (res->del_from_ml && res->sdev) {
3327 did_work = 1;
3328 sdev = res->sdev;
3329 if (!scsi_device_get(sdev)) {
3330 if (!res->add_to_ml)
3331 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3332 else
3333 res->del_from_ml = 0;
3334 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3335 scsi_remove_device(sdev);
3336 scsi_device_put(sdev);
3337 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3338 }
3339 break;
3340 }
3341 }
3342 } while (did_work);
3343
3344 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3345 if (res->add_to_ml) {
3346 bus = res->bus;
3347 target = res->target;
3348 lun = res->lun;
3349 res->add_to_ml = 0;
3350 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3351 scsi_add_device(ioa_cfg->host, bus, target, lun);
3352 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3353 goto restart;
3354 }
3355 }
3356
3357 ioa_cfg->scan_done = 1;
3358 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3359 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3360 LEAVE;
3361 }
3362
3363 #ifdef CONFIG_SCSI_IPR_TRACE
3364 /**
3365 * ipr_read_trace - Dump the adapter trace
3366 * @filp: open sysfs file
3367 * @kobj: kobject struct
3368 * @bin_attr: bin_attribute struct
3369 * @buf: buffer
3370 * @off: offset
3371 * @count: buffer size
3372 *
3373 * Return value:
3374 * number of bytes printed to buffer
3375 **/
3376 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3377 struct bin_attribute *bin_attr,
3378 char *buf, loff_t off, size_t count)
3379 {
3380 struct device *dev = container_of(kobj, struct device, kobj);
3381 struct Scsi_Host *shost = class_to_shost(dev);
3382 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3383 unsigned long lock_flags = 0;
3384 ssize_t ret;
3385
3386 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3387 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3388 IPR_TRACE_SIZE);
3389 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3390
3391 return ret;
3392 }
3393
3394 static struct bin_attribute ipr_trace_attr = {
3395 .attr = {
3396 .name = "trace",
3397 .mode = S_IRUGO,
3398 },
3399 .size = 0,
3400 .read = ipr_read_trace,
3401 };
3402 #endif
3403
3404 /**
3405 * ipr_show_fw_version - Show the firmware version
3406 * @dev: class device struct
3407 * @buf: buffer
3408 *
3409 * Return value:
3410 * number of bytes printed to buffer
3411 **/
3412 static ssize_t ipr_show_fw_version(struct device *dev,
3413 struct device_attribute *attr, char *buf)
3414 {
3415 struct Scsi_Host *shost = class_to_shost(dev);
3416 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3417 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3418 unsigned long lock_flags = 0;
3419 int len;
3420
3421 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3422 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3423 ucode_vpd->major_release, ucode_vpd->card_type,
3424 ucode_vpd->minor_release[0],
3425 ucode_vpd->minor_release[1]);
3426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3427 return len;
3428 }
3429
3430 static struct device_attribute ipr_fw_version_attr = {
3431 .attr = {
3432 .name = "fw_version",
3433 .mode = S_IRUGO,
3434 },
3435 .show = ipr_show_fw_version,
3436 };
3437
3438 /**
3439 * ipr_show_log_level - Show the adapter's error logging level
3440 * @dev: class device struct
3441 * @buf: buffer
3442 *
3443 * Return value:
3444 * number of bytes printed to buffer
3445 **/
3446 static ssize_t ipr_show_log_level(struct device *dev,
3447 struct device_attribute *attr, char *buf)
3448 {
3449 struct Scsi_Host *shost = class_to_shost(dev);
3450 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3451 unsigned long lock_flags = 0;
3452 int len;
3453
3454 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3455 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3456 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3457 return len;
3458 }
3459
3460 /**
3461 * ipr_store_log_level - Change the adapter's error logging level
3462 * @dev: class device struct
3463 * @buf: buffer
3464 *
3465 * Return value:
3466 * number of bytes printed to buffer
3467 **/
3468 static ssize_t ipr_store_log_level(struct device *dev,
3469 struct device_attribute *attr,
3470 const char *buf, size_t count)
3471 {
3472 struct Scsi_Host *shost = class_to_shost(dev);
3473 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3474 unsigned long lock_flags = 0;
3475
3476 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3477 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3479 return strlen(buf);
3480 }
3481
3482 static struct device_attribute ipr_log_level_attr = {
3483 .attr = {
3484 .name = "log_level",
3485 .mode = S_IRUGO | S_IWUSR,
3486 },
3487 .show = ipr_show_log_level,
3488 .store = ipr_store_log_level
3489 };
3490
3491 /**
3492 * ipr_store_diagnostics - IOA Diagnostics interface
3493 * @dev: device struct
3494 * @buf: buffer
3495 * @count: buffer size
3496 *
3497 * This function will reset the adapter and wait a reasonable
3498 * amount of time for any errors that the adapter might log.
3499 *
3500 * Return value:
3501 * count on success / other on failure
3502 **/
3503 static ssize_t ipr_store_diagnostics(struct device *dev,
3504 struct device_attribute *attr,
3505 const char *buf, size_t count)
3506 {
3507 struct Scsi_Host *shost = class_to_shost(dev);
3508 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3509 unsigned long lock_flags = 0;
3510 int rc = count;
3511
3512 if (!capable(CAP_SYS_ADMIN))
3513 return -EACCES;
3514
3515 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3516 while (ioa_cfg->in_reset_reload) {
3517 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3518 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3519 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3520 }
3521
3522 ioa_cfg->errors_logged = 0;
3523 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3524
3525 if (ioa_cfg->in_reset_reload) {
3526 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3527 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3528
3529 /* Wait for a second for any errors to be logged */
3530 msleep(1000);
3531 } else {
3532 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3533 return -EIO;
3534 }
3535
3536 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3537 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3538 rc = -EIO;
3539 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3540
3541 return rc;
3542 }
3543
3544 static struct device_attribute ipr_diagnostics_attr = {
3545 .attr = {
3546 .name = "run_diagnostics",
3547 .mode = S_IWUSR,
3548 },
3549 .store = ipr_store_diagnostics
3550 };
3551
3552 /**
3553 * ipr_show_adapter_state - Show the adapter's state
3554 * @class_dev: device struct
3555 * @buf: buffer
3556 *
3557 * Return value:
3558 * number of bytes printed to buffer
3559 **/
3560 static ssize_t ipr_show_adapter_state(struct device *dev,
3561 struct device_attribute *attr, char *buf)
3562 {
3563 struct Scsi_Host *shost = class_to_shost(dev);
3564 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3565 unsigned long lock_flags = 0;
3566 int len;
3567
3568 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3569 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3570 len = snprintf(buf, PAGE_SIZE, "offline\n");
3571 else
3572 len = snprintf(buf, PAGE_SIZE, "online\n");
3573 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3574 return len;
3575 }
3576
3577 /**
3578 * ipr_store_adapter_state - Change adapter state
3579 * @dev: device struct
3580 * @buf: buffer
3581 * @count: buffer size
3582 *
3583 * This function will change the adapter's state.
3584 *
3585 * Return value:
3586 * count on success / other on failure
3587 **/
3588 static ssize_t ipr_store_adapter_state(struct device *dev,
3589 struct device_attribute *attr,
3590 const char *buf, size_t count)
3591 {
3592 struct Scsi_Host *shost = class_to_shost(dev);
3593 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3594 unsigned long lock_flags;
3595 int result = count, i;
3596
3597 if (!capable(CAP_SYS_ADMIN))
3598 return -EACCES;
3599
3600 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3601 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3602 !strncmp(buf, "online", 6)) {
3603 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3604 spin_lock(&ioa_cfg->hrrq[i]._lock);
3605 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3606 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3607 }
3608 wmb();
3609 ioa_cfg->reset_retries = 0;
3610 ioa_cfg->in_ioa_bringdown = 0;
3611 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3612 }
3613 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3614 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3615
3616 return result;
3617 }
3618
3619 static struct device_attribute ipr_ioa_state_attr = {
3620 .attr = {
3621 .name = "online_state",
3622 .mode = S_IRUGO | S_IWUSR,
3623 },
3624 .show = ipr_show_adapter_state,
3625 .store = ipr_store_adapter_state
3626 };
3627
3628 /**
3629 * ipr_store_reset_adapter - Reset the adapter
3630 * @dev: device struct
3631 * @buf: buffer
3632 * @count: buffer size
3633 *
3634 * This function will reset the adapter.
3635 *
3636 * Return value:
3637 * count on success / other on failure
3638 **/
3639 static ssize_t ipr_store_reset_adapter(struct device *dev,
3640 struct device_attribute *attr,
3641 const char *buf, size_t count)
3642 {
3643 struct Scsi_Host *shost = class_to_shost(dev);
3644 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3645 unsigned long lock_flags;
3646 int result = count;
3647
3648 if (!capable(CAP_SYS_ADMIN))
3649 return -EACCES;
3650
3651 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3652 if (!ioa_cfg->in_reset_reload)
3653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3654 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3655 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3656
3657 return result;
3658 }
3659
3660 static struct device_attribute ipr_ioa_reset_attr = {
3661 .attr = {
3662 .name = "reset_host",
3663 .mode = S_IWUSR,
3664 },
3665 .store = ipr_store_reset_adapter
3666 };
3667
3668 static int ipr_iopoll(struct irq_poll *iop, int budget);
3669 /**
3670 * ipr_show_iopoll_weight - Show ipr polling mode
3671 * @dev: class device struct
3672 * @buf: buffer
3673 *
3674 * Return value:
3675 * number of bytes printed to buffer
3676 **/
3677 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3678 struct device_attribute *attr, char *buf)
3679 {
3680 struct Scsi_Host *shost = class_to_shost(dev);
3681 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3682 unsigned long lock_flags = 0;
3683 int len;
3684
3685 spin_lock_irqsave(shost->host_lock, lock_flags);
3686 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3687 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3688
3689 return len;
3690 }
3691
3692 /**
3693 * ipr_store_iopoll_weight - Change the adapter's polling mode
3694 * @dev: class device struct
3695 * @buf: buffer
3696 *
3697 * Return value:
3698 * number of bytes printed to buffer
3699 **/
3700 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3701 struct device_attribute *attr,
3702 const char *buf, size_t count)
3703 {
3704 struct Scsi_Host *shost = class_to_shost(dev);
3705 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3706 unsigned long user_iopoll_weight;
3707 unsigned long lock_flags = 0;
3708 int i;
3709
3710 if (!ioa_cfg->sis64) {
3711 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3712 return -EINVAL;
3713 }
3714 if (kstrtoul(buf, 10, &user_iopoll_weight))
3715 return -EINVAL;
3716
3717 if (user_iopoll_weight > 256) {
3718 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3719 return -EINVAL;
3720 }
3721
3722 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3723 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3724 return strlen(buf);
3725 }
3726
3727 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3728 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3729 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3730 }
3731
3732 spin_lock_irqsave(shost->host_lock, lock_flags);
3733 ioa_cfg->iopoll_weight = user_iopoll_weight;
3734 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3735 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3736 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3737 ioa_cfg->iopoll_weight, ipr_iopoll);
3738 }
3739 }
3740 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3741
3742 return strlen(buf);
3743 }
3744
3745 static struct device_attribute ipr_iopoll_weight_attr = {
3746 .attr = {
3747 .name = "iopoll_weight",
3748 .mode = S_IRUGO | S_IWUSR,
3749 },
3750 .show = ipr_show_iopoll_weight,
3751 .store = ipr_store_iopoll_weight
3752 };
3753
3754 /**
3755 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3756 * @buf_len: buffer length
3757 *
3758 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3759 * list to use for microcode download
3760 *
3761 * Return value:
3762 * pointer to sglist / NULL on failure
3763 **/
3764 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3765 {
3766 int sg_size, order, bsize_elem, num_elem, i, j;
3767 struct ipr_sglist *sglist;
3768 struct scatterlist *scatterlist;
3769 struct page *page;
3770
3771 /* Get the minimum size per scatter/gather element */
3772 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3773
3774 /* Get the actual size per element */
3775 order = get_order(sg_size);
3776
3777 /* Determine the actual number of bytes per element */
3778 bsize_elem = PAGE_SIZE * (1 << order);
3779
3780 /* Determine the actual number of sg entries needed */
3781 if (buf_len % bsize_elem)
3782 num_elem = (buf_len / bsize_elem) + 1;
3783 else
3784 num_elem = buf_len / bsize_elem;
3785
3786 /* Allocate a scatter/gather list for the DMA */
3787 sglist = kzalloc(sizeof(struct ipr_sglist) +
3788 (sizeof(struct scatterlist) * (num_elem - 1)),
3789 GFP_KERNEL);
3790
3791 if (sglist == NULL) {
3792 ipr_trace;
3793 return NULL;
3794 }
3795
3796 scatterlist = sglist->scatterlist;
3797 sg_init_table(scatterlist, num_elem);
3798
3799 sglist->order = order;
3800 sglist->num_sg = num_elem;
3801
3802 /* Allocate a bunch of sg elements */
3803 for (i = 0; i < num_elem; i++) {
3804 page = alloc_pages(GFP_KERNEL, order);
3805 if (!page) {
3806 ipr_trace;
3807
3808 /* Free up what we already allocated */
3809 for (j = i - 1; j >= 0; j--)
3810 __free_pages(sg_page(&scatterlist[j]), order);
3811 kfree(sglist);
3812 return NULL;
3813 }
3814
3815 sg_set_page(&scatterlist[i], page, 0, 0);
3816 }
3817
3818 return sglist;
3819 }
3820
3821 /**
3822 * ipr_free_ucode_buffer - Frees a microcode download buffer
3823 * @p_dnld: scatter/gather list pointer
3824 *
3825 * Free a DMA'able ucode download buffer previously allocated with
3826 * ipr_alloc_ucode_buffer
3827 *
3828 * Return value:
3829 * nothing
3830 **/
3831 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3832 {
3833 int i;
3834
3835 for (i = 0; i < sglist->num_sg; i++)
3836 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3837
3838 kfree(sglist);
3839 }
3840
3841 /**
3842 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3843 * @sglist: scatter/gather list pointer
3844 * @buffer: buffer pointer
3845 * @len: buffer length
3846 *
3847 * Copy a microcode image from a user buffer into a buffer allocated by
3848 * ipr_alloc_ucode_buffer
3849 *
3850 * Return value:
3851 * 0 on success / other on failure
3852 **/
3853 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3854 u8 *buffer, u32 len)
3855 {
3856 int bsize_elem, i, result = 0;
3857 struct scatterlist *scatterlist;
3858 void *kaddr;
3859
3860 /* Determine the actual number of bytes per element */
3861 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3862
3863 scatterlist = sglist->scatterlist;
3864
3865 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3866 struct page *page = sg_page(&scatterlist[i]);
3867
3868 kaddr = kmap(page);
3869 memcpy(kaddr, buffer, bsize_elem);
3870 kunmap(page);
3871
3872 scatterlist[i].length = bsize_elem;
3873
3874 if (result != 0) {
3875 ipr_trace;
3876 return result;
3877 }
3878 }
3879
3880 if (len % bsize_elem) {
3881 struct page *page = sg_page(&scatterlist[i]);
3882
3883 kaddr = kmap(page);
3884 memcpy(kaddr, buffer, len % bsize_elem);
3885 kunmap(page);
3886
3887 scatterlist[i].length = len % bsize_elem;
3888 }
3889
3890 sglist->buffer_len = len;
3891 return result;
3892 }
3893
3894 /**
3895 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3896 * @ipr_cmd: ipr command struct
3897 * @sglist: scatter/gather list
3898 *
3899 * Builds a microcode download IOA data list (IOADL).
3900 *
3901 **/
3902 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3903 struct ipr_sglist *sglist)
3904 {
3905 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3906 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3907 struct scatterlist *scatterlist = sglist->scatterlist;
3908 int i;
3909
3910 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3911 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3912 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3913
3914 ioarcb->ioadl_len =
3915 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3916 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3917 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3918 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3919 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3920 }
3921
3922 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3923 }
3924
3925 /**
3926 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3927 * @ipr_cmd: ipr command struct
3928 * @sglist: scatter/gather list
3929 *
3930 * Builds a microcode download IOA data list (IOADL).
3931 *
3932 **/
3933 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3934 struct ipr_sglist *sglist)
3935 {
3936 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3937 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3938 struct scatterlist *scatterlist = sglist->scatterlist;
3939 int i;
3940
3941 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3942 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3943 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3944
3945 ioarcb->ioadl_len =
3946 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3947
3948 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3949 ioadl[i].flags_and_data_len =
3950 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3951 ioadl[i].address =
3952 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3953 }
3954
3955 ioadl[i-1].flags_and_data_len |=
3956 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3957 }
3958
3959 /**
3960 * ipr_update_ioa_ucode - Update IOA's microcode
3961 * @ioa_cfg: ioa config struct
3962 * @sglist: scatter/gather list
3963 *
3964 * Initiate an adapter reset to update the IOA's microcode
3965 *
3966 * Return value:
3967 * 0 on success / -EIO on failure
3968 **/
3969 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3970 struct ipr_sglist *sglist)
3971 {
3972 unsigned long lock_flags;
3973
3974 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3975 while (ioa_cfg->in_reset_reload) {
3976 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3977 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3978 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3979 }
3980
3981 if (ioa_cfg->ucode_sglist) {
3982 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3983 dev_err(&ioa_cfg->pdev->dev,
3984 "Microcode download already in progress\n");
3985 return -EIO;
3986 }
3987
3988 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
3989 sglist->scatterlist, sglist->num_sg,
3990 DMA_TO_DEVICE);
3991
3992 if (!sglist->num_dma_sg) {
3993 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3994 dev_err(&ioa_cfg->pdev->dev,
3995 "Failed to map microcode download buffer!\n");
3996 return -EIO;
3997 }
3998
3999 ioa_cfg->ucode_sglist = sglist;
4000 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
4001 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4002 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4003
4004 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4005 ioa_cfg->ucode_sglist = NULL;
4006 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4007 return 0;
4008 }
4009
4010 /**
4011 * ipr_store_update_fw - Update the firmware on the adapter
4012 * @class_dev: device struct
4013 * @buf: buffer
4014 * @count: buffer size
4015 *
4016 * This function will update the firmware on the adapter.
4017 *
4018 * Return value:
4019 * count on success / other on failure
4020 **/
4021 static ssize_t ipr_store_update_fw(struct device *dev,
4022 struct device_attribute *attr,
4023 const char *buf, size_t count)
4024 {
4025 struct Scsi_Host *shost = class_to_shost(dev);
4026 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4027 struct ipr_ucode_image_header *image_hdr;
4028 const struct firmware *fw_entry;
4029 struct ipr_sglist *sglist;
4030 char fname[100];
4031 char *src;
4032 char *endline;
4033 int result, dnld_size;
4034
4035 if (!capable(CAP_SYS_ADMIN))
4036 return -EACCES;
4037
4038 snprintf(fname, sizeof(fname), "%s", buf);
4039
4040 endline = strchr(fname, '\n');
4041 if (endline)
4042 *endline = '\0';
4043
4044 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4045 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4046 return -EIO;
4047 }
4048
4049 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4050
4051 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4052 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4053 sglist = ipr_alloc_ucode_buffer(dnld_size);
4054
4055 if (!sglist) {
4056 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4057 release_firmware(fw_entry);
4058 return -ENOMEM;
4059 }
4060
4061 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4062
4063 if (result) {
4064 dev_err(&ioa_cfg->pdev->dev,
4065 "Microcode buffer copy to DMA buffer failed\n");
4066 goto out;
4067 }
4068
4069 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4070
4071 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4072
4073 if (!result)
4074 result = count;
4075 out:
4076 ipr_free_ucode_buffer(sglist);
4077 release_firmware(fw_entry);
4078 return result;
4079 }
4080
4081 static struct device_attribute ipr_update_fw_attr = {
4082 .attr = {
4083 .name = "update_fw",
4084 .mode = S_IWUSR,
4085 },
4086 .store = ipr_store_update_fw
4087 };
4088
4089 /**
4090 * ipr_show_fw_type - Show the adapter's firmware type.
4091 * @dev: class device struct
4092 * @buf: buffer
4093 *
4094 * Return value:
4095 * number of bytes printed to buffer
4096 **/
4097 static ssize_t ipr_show_fw_type(struct device *dev,
4098 struct device_attribute *attr, char *buf)
4099 {
4100 struct Scsi_Host *shost = class_to_shost(dev);
4101 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4102 unsigned long lock_flags = 0;
4103 int len;
4104
4105 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4106 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4107 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4108 return len;
4109 }
4110
4111 static struct device_attribute ipr_ioa_fw_type_attr = {
4112 .attr = {
4113 .name = "fw_type",
4114 .mode = S_IRUGO,
4115 },
4116 .show = ipr_show_fw_type
4117 };
4118
4119 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj,
4120 struct bin_attribute *bin_attr, char *buf,
4121 loff_t off, size_t count)
4122 {
4123 struct device *cdev = container_of(kobj, struct device, kobj);
4124 struct Scsi_Host *shost = class_to_shost(cdev);
4125 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4126 struct ipr_hostrcb *hostrcb;
4127 unsigned long lock_flags = 0;
4128 int ret;
4129
4130 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4131 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4132 struct ipr_hostrcb, queue);
4133 if (!hostrcb) {
4134 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4135 return 0;
4136 }
4137 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam,
4138 sizeof(hostrcb->hcam));
4139 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4140 return ret;
4141 }
4142
4143 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj,
4144 struct bin_attribute *bin_attr, char *buf,
4145 loff_t off, size_t count)
4146 {
4147 struct device *cdev = container_of(kobj, struct device, kobj);
4148 struct Scsi_Host *shost = class_to_shost(cdev);
4149 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4150 struct ipr_hostrcb *hostrcb;
4151 unsigned long lock_flags = 0;
4152
4153 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4154 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4155 struct ipr_hostrcb, queue);
4156 if (!hostrcb) {
4157 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4158 return count;
4159 }
4160
4161 /* Reclaim hostrcb before exit */
4162 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4163 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4164 return count;
4165 }
4166
4167 static struct bin_attribute ipr_ioa_async_err_log = {
4168 .attr = {
4169 .name = "async_err_log",
4170 .mode = S_IRUGO | S_IWUSR,
4171 },
4172 .size = 0,
4173 .read = ipr_read_async_err_log,
4174 .write = ipr_next_async_err_log
4175 };
4176
4177 static struct device_attribute *ipr_ioa_attrs[] = {
4178 &ipr_fw_version_attr,
4179 &ipr_log_level_attr,
4180 &ipr_diagnostics_attr,
4181 &ipr_ioa_state_attr,
4182 &ipr_ioa_reset_attr,
4183 &ipr_update_fw_attr,
4184 &ipr_ioa_fw_type_attr,
4185 &ipr_iopoll_weight_attr,
4186 NULL,
4187 };
4188
4189 #ifdef CONFIG_SCSI_IPR_DUMP
4190 /**
4191 * ipr_read_dump - Dump the adapter
4192 * @filp: open sysfs file
4193 * @kobj: kobject struct
4194 * @bin_attr: bin_attribute struct
4195 * @buf: buffer
4196 * @off: offset
4197 * @count: buffer size
4198 *
4199 * Return value:
4200 * number of bytes printed to buffer
4201 **/
4202 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4203 struct bin_attribute *bin_attr,
4204 char *buf, loff_t off, size_t count)
4205 {
4206 struct device *cdev = container_of(kobj, struct device, kobj);
4207 struct Scsi_Host *shost = class_to_shost(cdev);
4208 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4209 struct ipr_dump *dump;
4210 unsigned long lock_flags = 0;
4211 char *src;
4212 int len, sdt_end;
4213 size_t rc = count;
4214
4215 if (!capable(CAP_SYS_ADMIN))
4216 return -EACCES;
4217
4218 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4219 dump = ioa_cfg->dump;
4220
4221 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4222 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4223 return 0;
4224 }
4225 kref_get(&dump->kref);
4226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4227
4228 if (off > dump->driver_dump.hdr.len) {
4229 kref_put(&dump->kref, ipr_release_dump);
4230 return 0;
4231 }
4232
4233 if (off + count > dump->driver_dump.hdr.len) {
4234 count = dump->driver_dump.hdr.len - off;
4235 rc = count;
4236 }
4237
4238 if (count && off < sizeof(dump->driver_dump)) {
4239 if (off + count > sizeof(dump->driver_dump))
4240 len = sizeof(dump->driver_dump) - off;
4241 else
4242 len = count;
4243 src = (u8 *)&dump->driver_dump + off;
4244 memcpy(buf, src, len);
4245 buf += len;
4246 off += len;
4247 count -= len;
4248 }
4249
4250 off -= sizeof(dump->driver_dump);
4251
4252 if (ioa_cfg->sis64)
4253 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4254 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4255 sizeof(struct ipr_sdt_entry));
4256 else
4257 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4258 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4259
4260 if (count && off < sdt_end) {
4261 if (off + count > sdt_end)
4262 len = sdt_end - off;
4263 else
4264 len = count;
4265 src = (u8 *)&dump->ioa_dump + off;
4266 memcpy(buf, src, len);
4267 buf += len;
4268 off += len;
4269 count -= len;
4270 }
4271
4272 off -= sdt_end;
4273
4274 while (count) {
4275 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4276 len = PAGE_ALIGN(off) - off;
4277 else
4278 len = count;
4279 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4280 src += off & ~PAGE_MASK;
4281 memcpy(buf, src, len);
4282 buf += len;
4283 off += len;
4284 count -= len;
4285 }
4286
4287 kref_put(&dump->kref, ipr_release_dump);
4288 return rc;
4289 }
4290
4291 /**
4292 * ipr_alloc_dump - Prepare for adapter dump
4293 * @ioa_cfg: ioa config struct
4294 *
4295 * Return value:
4296 * 0 on success / other on failure
4297 **/
4298 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4299 {
4300 struct ipr_dump *dump;
4301 __be32 **ioa_data;
4302 unsigned long lock_flags = 0;
4303
4304 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4305
4306 if (!dump) {
4307 ipr_err("Dump memory allocation failed\n");
4308 return -ENOMEM;
4309 }
4310
4311 if (ioa_cfg->sis64)
4312 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4313 else
4314 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4315
4316 if (!ioa_data) {
4317 ipr_err("Dump memory allocation failed\n");
4318 kfree(dump);
4319 return -ENOMEM;
4320 }
4321
4322 dump->ioa_dump.ioa_data = ioa_data;
4323
4324 kref_init(&dump->kref);
4325 dump->ioa_cfg = ioa_cfg;
4326
4327 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4328
4329 if (INACTIVE != ioa_cfg->sdt_state) {
4330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4331 vfree(dump->ioa_dump.ioa_data);
4332 kfree(dump);
4333 return 0;
4334 }
4335
4336 ioa_cfg->dump = dump;
4337 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4338 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4339 ioa_cfg->dump_taken = 1;
4340 schedule_work(&ioa_cfg->work_q);
4341 }
4342 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4343
4344 return 0;
4345 }
4346
4347 /**
4348 * ipr_free_dump - Free adapter dump memory
4349 * @ioa_cfg: ioa config struct
4350 *
4351 * Return value:
4352 * 0 on success / other on failure
4353 **/
4354 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4355 {
4356 struct ipr_dump *dump;
4357 unsigned long lock_flags = 0;
4358
4359 ENTER;
4360
4361 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4362 dump = ioa_cfg->dump;
4363 if (!dump) {
4364 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4365 return 0;
4366 }
4367
4368 ioa_cfg->dump = NULL;
4369 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4370
4371 kref_put(&dump->kref, ipr_release_dump);
4372
4373 LEAVE;
4374 return 0;
4375 }
4376
4377 /**
4378 * ipr_write_dump - Setup dump state of adapter
4379 * @filp: open sysfs file
4380 * @kobj: kobject struct
4381 * @bin_attr: bin_attribute struct
4382 * @buf: buffer
4383 * @off: offset
4384 * @count: buffer size
4385 *
4386 * Return value:
4387 * number of bytes printed to buffer
4388 **/
4389 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4390 struct bin_attribute *bin_attr,
4391 char *buf, loff_t off, size_t count)
4392 {
4393 struct device *cdev = container_of(kobj, struct device, kobj);
4394 struct Scsi_Host *shost = class_to_shost(cdev);
4395 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4396 int rc;
4397
4398 if (!capable(CAP_SYS_ADMIN))
4399 return -EACCES;
4400
4401 if (buf[0] == '1')
4402 rc = ipr_alloc_dump(ioa_cfg);
4403 else if (buf[0] == '0')
4404 rc = ipr_free_dump(ioa_cfg);
4405 else
4406 return -EINVAL;
4407
4408 if (rc)
4409 return rc;
4410 else
4411 return count;
4412 }
4413
4414 static struct bin_attribute ipr_dump_attr = {
4415 .attr = {
4416 .name = "dump",
4417 .mode = S_IRUSR | S_IWUSR,
4418 },
4419 .size = 0,
4420 .read = ipr_read_dump,
4421 .write = ipr_write_dump
4422 };
4423 #else
4424 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4425 #endif
4426
4427 /**
4428 * ipr_change_queue_depth - Change the device's queue depth
4429 * @sdev: scsi device struct
4430 * @qdepth: depth to set
4431 * @reason: calling context
4432 *
4433 * Return value:
4434 * actual depth set
4435 **/
4436 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4437 {
4438 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4439 struct ipr_resource_entry *res;
4440 unsigned long lock_flags = 0;
4441
4442 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4443 res = (struct ipr_resource_entry *)sdev->hostdata;
4444
4445 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4446 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4447 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4448
4449 scsi_change_queue_depth(sdev, qdepth);
4450 return sdev->queue_depth;
4451 }
4452
4453 /**
4454 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4455 * @dev: device struct
4456 * @attr: device attribute structure
4457 * @buf: buffer
4458 *
4459 * Return value:
4460 * number of bytes printed to buffer
4461 **/
4462 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4463 {
4464 struct scsi_device *sdev = to_scsi_device(dev);
4465 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4466 struct ipr_resource_entry *res;
4467 unsigned long lock_flags = 0;
4468 ssize_t len = -ENXIO;
4469
4470 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4471 res = (struct ipr_resource_entry *)sdev->hostdata;
4472 if (res)
4473 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4474 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4475 return len;
4476 }
4477
4478 static struct device_attribute ipr_adapter_handle_attr = {
4479 .attr = {
4480 .name = "adapter_handle",
4481 .mode = S_IRUSR,
4482 },
4483 .show = ipr_show_adapter_handle
4484 };
4485
4486 /**
4487 * ipr_show_resource_path - Show the resource path or the resource address for
4488 * this device.
4489 * @dev: device struct
4490 * @attr: device attribute structure
4491 * @buf: buffer
4492 *
4493 * Return value:
4494 * number of bytes printed to buffer
4495 **/
4496 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4497 {
4498 struct scsi_device *sdev = to_scsi_device(dev);
4499 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4500 struct ipr_resource_entry *res;
4501 unsigned long lock_flags = 0;
4502 ssize_t len = -ENXIO;
4503 char buffer[IPR_MAX_RES_PATH_LENGTH];
4504
4505 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4506 res = (struct ipr_resource_entry *)sdev->hostdata;
4507 if (res && ioa_cfg->sis64)
4508 len = snprintf(buf, PAGE_SIZE, "%s\n",
4509 __ipr_format_res_path(res->res_path, buffer,
4510 sizeof(buffer)));
4511 else if (res)
4512 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4513 res->bus, res->target, res->lun);
4514
4515 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4516 return len;
4517 }
4518
4519 static struct device_attribute ipr_resource_path_attr = {
4520 .attr = {
4521 .name = "resource_path",
4522 .mode = S_IRUGO,
4523 },
4524 .show = ipr_show_resource_path
4525 };
4526
4527 /**
4528 * ipr_show_device_id - Show the device_id for this device.
4529 * @dev: device struct
4530 * @attr: device attribute structure
4531 * @buf: buffer
4532 *
4533 * Return value:
4534 * number of bytes printed to buffer
4535 **/
4536 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4537 {
4538 struct scsi_device *sdev = to_scsi_device(dev);
4539 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4540 struct ipr_resource_entry *res;
4541 unsigned long lock_flags = 0;
4542 ssize_t len = -ENXIO;
4543
4544 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4545 res = (struct ipr_resource_entry *)sdev->hostdata;
4546 if (res && ioa_cfg->sis64)
4547 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4548 else if (res)
4549 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4550
4551 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4552 return len;
4553 }
4554
4555 static struct device_attribute ipr_device_id_attr = {
4556 .attr = {
4557 .name = "device_id",
4558 .mode = S_IRUGO,
4559 },
4560 .show = ipr_show_device_id
4561 };
4562
4563 /**
4564 * ipr_show_resource_type - Show the resource type for this device.
4565 * @dev: device struct
4566 * @attr: device attribute structure
4567 * @buf: buffer
4568 *
4569 * Return value:
4570 * number of bytes printed to buffer
4571 **/
4572 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4573 {
4574 struct scsi_device *sdev = to_scsi_device(dev);
4575 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4576 struct ipr_resource_entry *res;
4577 unsigned long lock_flags = 0;
4578 ssize_t len = -ENXIO;
4579
4580 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4581 res = (struct ipr_resource_entry *)sdev->hostdata;
4582
4583 if (res)
4584 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4585
4586 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4587 return len;
4588 }
4589
4590 static struct device_attribute ipr_resource_type_attr = {
4591 .attr = {
4592 .name = "resource_type",
4593 .mode = S_IRUGO,
4594 },
4595 .show = ipr_show_resource_type
4596 };
4597
4598 /**
4599 * ipr_show_raw_mode - Show the adapter's raw mode
4600 * @dev: class device struct
4601 * @buf: buffer
4602 *
4603 * Return value:
4604 * number of bytes printed to buffer
4605 **/
4606 static ssize_t ipr_show_raw_mode(struct device *dev,
4607 struct device_attribute *attr, char *buf)
4608 {
4609 struct scsi_device *sdev = to_scsi_device(dev);
4610 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4611 struct ipr_resource_entry *res;
4612 unsigned long lock_flags = 0;
4613 ssize_t len;
4614
4615 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4616 res = (struct ipr_resource_entry *)sdev->hostdata;
4617 if (res)
4618 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4619 else
4620 len = -ENXIO;
4621 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4622 return len;
4623 }
4624
4625 /**
4626 * ipr_store_raw_mode - Change the adapter's raw mode
4627 * @dev: class device struct
4628 * @buf: buffer
4629 *
4630 * Return value:
4631 * number of bytes printed to buffer
4632 **/
4633 static ssize_t ipr_store_raw_mode(struct device *dev,
4634 struct device_attribute *attr,
4635 const char *buf, size_t count)
4636 {
4637 struct scsi_device *sdev = to_scsi_device(dev);
4638 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4639 struct ipr_resource_entry *res;
4640 unsigned long lock_flags = 0;
4641 ssize_t len;
4642
4643 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4644 res = (struct ipr_resource_entry *)sdev->hostdata;
4645 if (res) {
4646 if (ipr_is_af_dasd_device(res)) {
4647 res->raw_mode = simple_strtoul(buf, NULL, 10);
4648 len = strlen(buf);
4649 if (res->sdev)
4650 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4651 res->raw_mode ? "enabled" : "disabled");
4652 } else
4653 len = -EINVAL;
4654 } else
4655 len = -ENXIO;
4656 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4657 return len;
4658 }
4659
4660 static struct device_attribute ipr_raw_mode_attr = {
4661 .attr = {
4662 .name = "raw_mode",
4663 .mode = S_IRUGO | S_IWUSR,
4664 },
4665 .show = ipr_show_raw_mode,
4666 .store = ipr_store_raw_mode
4667 };
4668
4669 static struct device_attribute *ipr_dev_attrs[] = {
4670 &ipr_adapter_handle_attr,
4671 &ipr_resource_path_attr,
4672 &ipr_device_id_attr,
4673 &ipr_resource_type_attr,
4674 &ipr_raw_mode_attr,
4675 NULL,
4676 };
4677
4678 /**
4679 * ipr_biosparam - Return the HSC mapping
4680 * @sdev: scsi device struct
4681 * @block_device: block device pointer
4682 * @capacity: capacity of the device
4683 * @parm: Array containing returned HSC values.
4684 *
4685 * This function generates the HSC parms that fdisk uses.
4686 * We want to make sure we return something that places partitions
4687 * on 4k boundaries for best performance with the IOA.
4688 *
4689 * Return value:
4690 * 0 on success
4691 **/
4692 static int ipr_biosparam(struct scsi_device *sdev,
4693 struct block_device *block_device,
4694 sector_t capacity, int *parm)
4695 {
4696 int heads, sectors;
4697 sector_t cylinders;
4698
4699 heads = 128;
4700 sectors = 32;
4701
4702 cylinders = capacity;
4703 sector_div(cylinders, (128 * 32));
4704
4705 /* return result */
4706 parm[0] = heads;
4707 parm[1] = sectors;
4708 parm[2] = cylinders;
4709
4710 return 0;
4711 }
4712
4713 /**
4714 * ipr_find_starget - Find target based on bus/target.
4715 * @starget: scsi target struct
4716 *
4717 * Return value:
4718 * resource entry pointer if found / NULL if not found
4719 **/
4720 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4721 {
4722 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4723 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4724 struct ipr_resource_entry *res;
4725
4726 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4727 if ((res->bus == starget->channel) &&
4728 (res->target == starget->id)) {
4729 return res;
4730 }
4731 }
4732
4733 return NULL;
4734 }
4735
4736 static struct ata_port_info sata_port_info;
4737
4738 /**
4739 * ipr_target_alloc - Prepare for commands to a SCSI target
4740 * @starget: scsi target struct
4741 *
4742 * If the device is a SATA device, this function allocates an
4743 * ATA port with libata, else it does nothing.
4744 *
4745 * Return value:
4746 * 0 on success / non-0 on failure
4747 **/
4748 static int ipr_target_alloc(struct scsi_target *starget)
4749 {
4750 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4751 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4752 struct ipr_sata_port *sata_port;
4753 struct ata_port *ap;
4754 struct ipr_resource_entry *res;
4755 unsigned long lock_flags;
4756
4757 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4758 res = ipr_find_starget(starget);
4759 starget->hostdata = NULL;
4760
4761 if (res && ipr_is_gata(res)) {
4762 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4763 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4764 if (!sata_port)
4765 return -ENOMEM;
4766
4767 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4768 if (ap) {
4769 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4770 sata_port->ioa_cfg = ioa_cfg;
4771 sata_port->ap = ap;
4772 sata_port->res = res;
4773
4774 res->sata_port = sata_port;
4775 ap->private_data = sata_port;
4776 starget->hostdata = sata_port;
4777 } else {
4778 kfree(sata_port);
4779 return -ENOMEM;
4780 }
4781 }
4782 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4783
4784 return 0;
4785 }
4786
4787 /**
4788 * ipr_target_destroy - Destroy a SCSI target
4789 * @starget: scsi target struct
4790 *
4791 * If the device was a SATA device, this function frees the libata
4792 * ATA port, else it does nothing.
4793 *
4794 **/
4795 static void ipr_target_destroy(struct scsi_target *starget)
4796 {
4797 struct ipr_sata_port *sata_port = starget->hostdata;
4798 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4799 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4800
4801 if (ioa_cfg->sis64) {
4802 if (!ipr_find_starget(starget)) {
4803 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4804 clear_bit(starget->id, ioa_cfg->array_ids);
4805 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4806 clear_bit(starget->id, ioa_cfg->vset_ids);
4807 else if (starget->channel == 0)
4808 clear_bit(starget->id, ioa_cfg->target_ids);
4809 }
4810 }
4811
4812 if (sata_port) {
4813 starget->hostdata = NULL;
4814 ata_sas_port_destroy(sata_port->ap);
4815 kfree(sata_port);
4816 }
4817 }
4818
4819 /**
4820 * ipr_find_sdev - Find device based on bus/target/lun.
4821 * @sdev: scsi device struct
4822 *
4823 * Return value:
4824 * resource entry pointer if found / NULL if not found
4825 **/
4826 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4827 {
4828 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4829 struct ipr_resource_entry *res;
4830
4831 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4832 if ((res->bus == sdev->channel) &&
4833 (res->target == sdev->id) &&
4834 (res->lun == sdev->lun))
4835 return res;
4836 }
4837
4838 return NULL;
4839 }
4840
4841 /**
4842 * ipr_slave_destroy - Unconfigure a SCSI device
4843 * @sdev: scsi device struct
4844 *
4845 * Return value:
4846 * nothing
4847 **/
4848 static void ipr_slave_destroy(struct scsi_device *sdev)
4849 {
4850 struct ipr_resource_entry *res;
4851 struct ipr_ioa_cfg *ioa_cfg;
4852 unsigned long lock_flags = 0;
4853
4854 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4855
4856 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4857 res = (struct ipr_resource_entry *) sdev->hostdata;
4858 if (res) {
4859 if (res->sata_port)
4860 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4861 sdev->hostdata = NULL;
4862 res->sdev = NULL;
4863 res->sata_port = NULL;
4864 }
4865 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4866 }
4867
4868 /**
4869 * ipr_slave_configure - Configure a SCSI device
4870 * @sdev: scsi device struct
4871 *
4872 * This function configures the specified scsi device.
4873 *
4874 * Return value:
4875 * 0 on success
4876 **/
4877 static int ipr_slave_configure(struct scsi_device *sdev)
4878 {
4879 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4880 struct ipr_resource_entry *res;
4881 struct ata_port *ap = NULL;
4882 unsigned long lock_flags = 0;
4883 char buffer[IPR_MAX_RES_PATH_LENGTH];
4884
4885 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4886 res = sdev->hostdata;
4887 if (res) {
4888 if (ipr_is_af_dasd_device(res))
4889 sdev->type = TYPE_RAID;
4890 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4891 sdev->scsi_level = 4;
4892 sdev->no_uld_attach = 1;
4893 }
4894 if (ipr_is_vset_device(res)) {
4895 sdev->scsi_level = SCSI_SPC_3;
4896 blk_queue_rq_timeout(sdev->request_queue,
4897 IPR_VSET_RW_TIMEOUT);
4898 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4899 }
4900 if (ipr_is_gata(res) && res->sata_port)
4901 ap = res->sata_port->ap;
4902 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4903
4904 if (ap) {
4905 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4906 ata_sas_slave_configure(sdev, ap);
4907 }
4908
4909 if (ioa_cfg->sis64)
4910 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4911 ipr_format_res_path(ioa_cfg,
4912 res->res_path, buffer, sizeof(buffer)));
4913 return 0;
4914 }
4915 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4916 return 0;
4917 }
4918
4919 /**
4920 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4921 * @sdev: scsi device struct
4922 *
4923 * This function initializes an ATA port so that future commands
4924 * sent through queuecommand will work.
4925 *
4926 * Return value:
4927 * 0 on success
4928 **/
4929 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4930 {
4931 struct ipr_sata_port *sata_port = NULL;
4932 int rc = -ENXIO;
4933
4934 ENTER;
4935 if (sdev->sdev_target)
4936 sata_port = sdev->sdev_target->hostdata;
4937 if (sata_port) {
4938 rc = ata_sas_port_init(sata_port->ap);
4939 if (rc == 0)
4940 rc = ata_sas_sync_probe(sata_port->ap);
4941 }
4942
4943 if (rc)
4944 ipr_slave_destroy(sdev);
4945
4946 LEAVE;
4947 return rc;
4948 }
4949
4950 /**
4951 * ipr_slave_alloc - Prepare for commands to a device.
4952 * @sdev: scsi device struct
4953 *
4954 * This function saves a pointer to the resource entry
4955 * in the scsi device struct if the device exists. We
4956 * can then use this pointer in ipr_queuecommand when
4957 * handling new commands.
4958 *
4959 * Return value:
4960 * 0 on success / -ENXIO if device does not exist
4961 **/
4962 static int ipr_slave_alloc(struct scsi_device *sdev)
4963 {
4964 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4965 struct ipr_resource_entry *res;
4966 unsigned long lock_flags;
4967 int rc = -ENXIO;
4968
4969 sdev->hostdata = NULL;
4970
4971 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4972
4973 res = ipr_find_sdev(sdev);
4974 if (res) {
4975 res->sdev = sdev;
4976 res->add_to_ml = 0;
4977 res->in_erp = 0;
4978 sdev->hostdata = res;
4979 if (!ipr_is_naca_model(res))
4980 res->needs_sync_complete = 1;
4981 rc = 0;
4982 if (ipr_is_gata(res)) {
4983 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4984 return ipr_ata_slave_alloc(sdev);
4985 }
4986 }
4987
4988 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4989
4990 return rc;
4991 }
4992
4993 /**
4994 * ipr_match_lun - Match function for specified LUN
4995 * @ipr_cmd: ipr command struct
4996 * @device: device to match (sdev)
4997 *
4998 * Returns:
4999 * 1 if command matches sdev / 0 if command does not match sdev
5000 **/
5001 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
5002 {
5003 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
5004 return 1;
5005 return 0;
5006 }
5007
5008 /**
5009 * ipr_wait_for_ops - Wait for matching commands to complete
5010 * @ipr_cmd: ipr command struct
5011 * @device: device to match (sdev)
5012 * @match: match function to use
5013 *
5014 * Returns:
5015 * SUCCESS / FAILED
5016 **/
5017 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
5018 int (*match)(struct ipr_cmnd *, void *))
5019 {
5020 struct ipr_cmnd *ipr_cmd;
5021 int wait;
5022 unsigned long flags;
5023 struct ipr_hrr_queue *hrrq;
5024 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
5025 DECLARE_COMPLETION_ONSTACK(comp);
5026
5027 ENTER;
5028 do {
5029 wait = 0;
5030
5031 for_each_hrrq(hrrq, ioa_cfg) {
5032 spin_lock_irqsave(hrrq->lock, flags);
5033 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5034 if (match(ipr_cmd, device)) {
5035 ipr_cmd->eh_comp = &comp;
5036 wait++;
5037 }
5038 }
5039 spin_unlock_irqrestore(hrrq->lock, flags);
5040 }
5041
5042 if (wait) {
5043 timeout = wait_for_completion_timeout(&comp, timeout);
5044
5045 if (!timeout) {
5046 wait = 0;
5047
5048 for_each_hrrq(hrrq, ioa_cfg) {
5049 spin_lock_irqsave(hrrq->lock, flags);
5050 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5051 if (match(ipr_cmd, device)) {
5052 ipr_cmd->eh_comp = NULL;
5053 wait++;
5054 }
5055 }
5056 spin_unlock_irqrestore(hrrq->lock, flags);
5057 }
5058
5059 if (wait)
5060 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
5061 LEAVE;
5062 return wait ? FAILED : SUCCESS;
5063 }
5064 }
5065 } while (wait);
5066
5067 LEAVE;
5068 return SUCCESS;
5069 }
5070
5071 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
5072 {
5073 struct ipr_ioa_cfg *ioa_cfg;
5074 unsigned long lock_flags = 0;
5075 int rc = SUCCESS;
5076
5077 ENTER;
5078 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5079 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5080
5081 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5082 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5083 dev_err(&ioa_cfg->pdev->dev,
5084 "Adapter being reset as a result of error recovery.\n");
5085
5086 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5087 ioa_cfg->sdt_state = GET_DUMP;
5088 }
5089
5090 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5091 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5092 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5093
5094 /* If we got hit with a host reset while we were already resetting
5095 the adapter for some reason, and the reset failed. */
5096 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5097 ipr_trace;
5098 rc = FAILED;
5099 }
5100
5101 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5102 LEAVE;
5103 return rc;
5104 }
5105
5106 /**
5107 * ipr_device_reset - Reset the device
5108 * @ioa_cfg: ioa config struct
5109 * @res: resource entry struct
5110 *
5111 * This function issues a device reset to the affected device.
5112 * If the device is a SCSI device, a LUN reset will be sent
5113 * to the device first. If that does not work, a target reset
5114 * will be sent. If the device is a SATA device, a PHY reset will
5115 * be sent.
5116 *
5117 * Return value:
5118 * 0 on success / non-zero on failure
5119 **/
5120 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5121 struct ipr_resource_entry *res)
5122 {
5123 struct ipr_cmnd *ipr_cmd;
5124 struct ipr_ioarcb *ioarcb;
5125 struct ipr_cmd_pkt *cmd_pkt;
5126 struct ipr_ioarcb_ata_regs *regs;
5127 u32 ioasc;
5128
5129 ENTER;
5130 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5131 ioarcb = &ipr_cmd->ioarcb;
5132 cmd_pkt = &ioarcb->cmd_pkt;
5133
5134 if (ipr_cmd->ioa_cfg->sis64) {
5135 regs = &ipr_cmd->i.ata_ioadl.regs;
5136 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5137 } else
5138 regs = &ioarcb->u.add_data.u.regs;
5139
5140 ioarcb->res_handle = res->res_handle;
5141 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5142 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5143 if (ipr_is_gata(res)) {
5144 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5145 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5146 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5147 }
5148
5149 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5150 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5151 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5152 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5153 if (ipr_cmd->ioa_cfg->sis64)
5154 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5155 sizeof(struct ipr_ioasa_gata));
5156 else
5157 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5158 sizeof(struct ipr_ioasa_gata));
5159 }
5160
5161 LEAVE;
5162 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5163 }
5164
5165 /**
5166 * ipr_sata_reset - Reset the SATA port
5167 * @link: SATA link to reset
5168 * @classes: class of the attached device
5169 *
5170 * This function issues a SATA phy reset to the affected ATA link.
5171 *
5172 * Return value:
5173 * 0 on success / non-zero on failure
5174 **/
5175 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5176 unsigned long deadline)
5177 {
5178 struct ipr_sata_port *sata_port = link->ap->private_data;
5179 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5180 struct ipr_resource_entry *res;
5181 unsigned long lock_flags = 0;
5182 int rc = -ENXIO;
5183
5184 ENTER;
5185 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5186 while (ioa_cfg->in_reset_reload) {
5187 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5188 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5189 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5190 }
5191
5192 res = sata_port->res;
5193 if (res) {
5194 rc = ipr_device_reset(ioa_cfg, res);
5195 *classes = res->ata_class;
5196 }
5197
5198 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5199 LEAVE;
5200 return rc;
5201 }
5202
5203 /**
5204 * ipr_eh_dev_reset - Reset the device
5205 * @scsi_cmd: scsi command struct
5206 *
5207 * This function issues a device reset to the affected device.
5208 * A LUN reset will be sent to the device first. If that does
5209 * not work, a target reset will be sent.
5210 *
5211 * Return value:
5212 * SUCCESS / FAILED
5213 **/
5214 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5215 {
5216 struct ipr_cmnd *ipr_cmd;
5217 struct ipr_ioa_cfg *ioa_cfg;
5218 struct ipr_resource_entry *res;
5219 struct ata_port *ap;
5220 int rc = 0;
5221 struct ipr_hrr_queue *hrrq;
5222
5223 ENTER;
5224 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5225 res = scsi_cmd->device->hostdata;
5226
5227 if (!res)
5228 return FAILED;
5229
5230 /*
5231 * If we are currently going through reset/reload, return failed. This will force the
5232 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5233 * reset to complete
5234 */
5235 if (ioa_cfg->in_reset_reload)
5236 return FAILED;
5237 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5238 return FAILED;
5239
5240 for_each_hrrq(hrrq, ioa_cfg) {
5241 spin_lock(&hrrq->_lock);
5242 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5243 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5244 if (ipr_cmd->scsi_cmd)
5245 ipr_cmd->done = ipr_scsi_eh_done;
5246 if (ipr_cmd->qc)
5247 ipr_cmd->done = ipr_sata_eh_done;
5248 if (ipr_cmd->qc &&
5249 !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5250 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5251 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5252 }
5253 }
5254 }
5255 spin_unlock(&hrrq->_lock);
5256 }
5257 res->resetting_device = 1;
5258 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5259
5260 if (ipr_is_gata(res) && res->sata_port) {
5261 ap = res->sata_port->ap;
5262 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5263 ata_std_error_handler(ap);
5264 spin_lock_irq(scsi_cmd->device->host->host_lock);
5265
5266 for_each_hrrq(hrrq, ioa_cfg) {
5267 spin_lock(&hrrq->_lock);
5268 list_for_each_entry(ipr_cmd,
5269 &hrrq->hrrq_pending_q, queue) {
5270 if (ipr_cmd->ioarcb.res_handle ==
5271 res->res_handle) {
5272 rc = -EIO;
5273 break;
5274 }
5275 }
5276 spin_unlock(&hrrq->_lock);
5277 }
5278 } else
5279 rc = ipr_device_reset(ioa_cfg, res);
5280 res->resetting_device = 0;
5281 res->reset_occurred = 1;
5282
5283 LEAVE;
5284 return rc ? FAILED : SUCCESS;
5285 }
5286
5287 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5288 {
5289 int rc;
5290 struct ipr_ioa_cfg *ioa_cfg;
5291
5292 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5293
5294 spin_lock_irq(cmd->device->host->host_lock);
5295 rc = __ipr_eh_dev_reset(cmd);
5296 spin_unlock_irq(cmd->device->host->host_lock);
5297
5298 if (rc == SUCCESS)
5299 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5300
5301 return rc;
5302 }
5303
5304 /**
5305 * ipr_bus_reset_done - Op done function for bus reset.
5306 * @ipr_cmd: ipr command struct
5307 *
5308 * This function is the op done function for a bus reset
5309 *
5310 * Return value:
5311 * none
5312 **/
5313 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5314 {
5315 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5316 struct ipr_resource_entry *res;
5317
5318 ENTER;
5319 if (!ioa_cfg->sis64)
5320 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5321 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5322 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5323 break;
5324 }
5325 }
5326
5327 /*
5328 * If abort has not completed, indicate the reset has, else call the
5329 * abort's done function to wake the sleeping eh thread
5330 */
5331 if (ipr_cmd->sibling->sibling)
5332 ipr_cmd->sibling->sibling = NULL;
5333 else
5334 ipr_cmd->sibling->done(ipr_cmd->sibling);
5335
5336 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5337 LEAVE;
5338 }
5339
5340 /**
5341 * ipr_abort_timeout - An abort task has timed out
5342 * @ipr_cmd: ipr command struct
5343 *
5344 * This function handles when an abort task times out. If this
5345 * happens we issue a bus reset since we have resources tied
5346 * up that must be freed before returning to the midlayer.
5347 *
5348 * Return value:
5349 * none
5350 **/
5351 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5352 {
5353 struct ipr_cmnd *reset_cmd;
5354 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5355 struct ipr_cmd_pkt *cmd_pkt;
5356 unsigned long lock_flags = 0;
5357
5358 ENTER;
5359 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5360 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5361 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5362 return;
5363 }
5364
5365 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5366 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5367 ipr_cmd->sibling = reset_cmd;
5368 reset_cmd->sibling = ipr_cmd;
5369 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5370 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5371 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5372 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5373 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5374
5375 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5376 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5377 LEAVE;
5378 }
5379
5380 /**
5381 * ipr_cancel_op - Cancel specified op
5382 * @scsi_cmd: scsi command struct
5383 *
5384 * This function cancels specified op.
5385 *
5386 * Return value:
5387 * SUCCESS / FAILED
5388 **/
5389 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5390 {
5391 struct ipr_cmnd *ipr_cmd;
5392 struct ipr_ioa_cfg *ioa_cfg;
5393 struct ipr_resource_entry *res;
5394 struct ipr_cmd_pkt *cmd_pkt;
5395 u32 ioasc, int_reg;
5396 int op_found = 0;
5397 struct ipr_hrr_queue *hrrq;
5398
5399 ENTER;
5400 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5401 res = scsi_cmd->device->hostdata;
5402
5403 /* If we are currently going through reset/reload, return failed.
5404 * This will force the mid-layer to call ipr_eh_host_reset,
5405 * which will then go to sleep and wait for the reset to complete
5406 */
5407 if (ioa_cfg->in_reset_reload ||
5408 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5409 return FAILED;
5410 if (!res)
5411 return FAILED;
5412
5413 /*
5414 * If we are aborting a timed out op, chances are that the timeout was caused
5415 * by a still not detected EEH error. In such cases, reading a register will
5416 * trigger the EEH recovery infrastructure.
5417 */
5418 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5419
5420 if (!ipr_is_gscsi(res))
5421 return FAILED;
5422
5423 for_each_hrrq(hrrq, ioa_cfg) {
5424 spin_lock(&hrrq->_lock);
5425 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5426 if (ipr_cmd->scsi_cmd == scsi_cmd) {
5427 ipr_cmd->done = ipr_scsi_eh_done;
5428 op_found = 1;
5429 break;
5430 }
5431 }
5432 spin_unlock(&hrrq->_lock);
5433 }
5434
5435 if (!op_found)
5436 return SUCCESS;
5437
5438 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5439 ipr_cmd->ioarcb.res_handle = res->res_handle;
5440 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5441 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5442 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5443 ipr_cmd->u.sdev = scsi_cmd->device;
5444
5445 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5446 scsi_cmd->cmnd[0]);
5447 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5448 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5449
5450 /*
5451 * If the abort task timed out and we sent a bus reset, we will get
5452 * one the following responses to the abort
5453 */
5454 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5455 ioasc = 0;
5456 ipr_trace;
5457 }
5458
5459 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5460 if (!ipr_is_naca_model(res))
5461 res->needs_sync_complete = 1;
5462
5463 LEAVE;
5464 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5465 }
5466
5467 /**
5468 * ipr_eh_abort - Abort a single op
5469 * @scsi_cmd: scsi command struct
5470 *
5471 * Return value:
5472 * 0 if scan in progress / 1 if scan is complete
5473 **/
5474 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5475 {
5476 unsigned long lock_flags;
5477 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5478 int rc = 0;
5479
5480 spin_lock_irqsave(shost->host_lock, lock_flags);
5481 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5482 rc = 1;
5483 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5484 rc = 1;
5485 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5486 return rc;
5487 }
5488
5489 /**
5490 * ipr_eh_host_reset - Reset the host adapter
5491 * @scsi_cmd: scsi command struct
5492 *
5493 * Return value:
5494 * SUCCESS / FAILED
5495 **/
5496 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5497 {
5498 unsigned long flags;
5499 int rc;
5500 struct ipr_ioa_cfg *ioa_cfg;
5501
5502 ENTER;
5503
5504 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5505
5506 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5507 rc = ipr_cancel_op(scsi_cmd);
5508 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5509
5510 if (rc == SUCCESS)
5511 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5512 LEAVE;
5513 return rc;
5514 }
5515
5516 /**
5517 * ipr_handle_other_interrupt - Handle "other" interrupts
5518 * @ioa_cfg: ioa config struct
5519 * @int_reg: interrupt register
5520 *
5521 * Return value:
5522 * IRQ_NONE / IRQ_HANDLED
5523 **/
5524 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5525 u32 int_reg)
5526 {
5527 irqreturn_t rc = IRQ_HANDLED;
5528 u32 int_mask_reg;
5529
5530 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5531 int_reg &= ~int_mask_reg;
5532
5533 /* If an interrupt on the adapter did not occur, ignore it.
5534 * Or in the case of SIS 64, check for a stage change interrupt.
5535 */
5536 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5537 if (ioa_cfg->sis64) {
5538 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5539 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5540 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5541
5542 /* clear stage change */
5543 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5544 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5545 list_del(&ioa_cfg->reset_cmd->queue);
5546 del_timer(&ioa_cfg->reset_cmd->timer);
5547 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5548 return IRQ_HANDLED;
5549 }
5550 }
5551
5552 return IRQ_NONE;
5553 }
5554
5555 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5556 /* Mask the interrupt */
5557 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5558 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5559
5560 list_del(&ioa_cfg->reset_cmd->queue);
5561 del_timer(&ioa_cfg->reset_cmd->timer);
5562 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5563 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5564 if (ioa_cfg->clear_isr) {
5565 if (ipr_debug && printk_ratelimit())
5566 dev_err(&ioa_cfg->pdev->dev,
5567 "Spurious interrupt detected. 0x%08X\n", int_reg);
5568 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5569 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5570 return IRQ_NONE;
5571 }
5572 } else {
5573 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5574 ioa_cfg->ioa_unit_checked = 1;
5575 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5576 dev_err(&ioa_cfg->pdev->dev,
5577 "No Host RRQ. 0x%08X\n", int_reg);
5578 else
5579 dev_err(&ioa_cfg->pdev->dev,
5580 "Permanent IOA failure. 0x%08X\n", int_reg);
5581
5582 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5583 ioa_cfg->sdt_state = GET_DUMP;
5584
5585 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5586 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5587 }
5588
5589 return rc;
5590 }
5591
5592 /**
5593 * ipr_isr_eh - Interrupt service routine error handler
5594 * @ioa_cfg: ioa config struct
5595 * @msg: message to log
5596 *
5597 * Return value:
5598 * none
5599 **/
5600 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5601 {
5602 ioa_cfg->errors_logged++;
5603 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5604
5605 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5606 ioa_cfg->sdt_state = GET_DUMP;
5607
5608 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5609 }
5610
5611 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5612 struct list_head *doneq)
5613 {
5614 u32 ioasc;
5615 u16 cmd_index;
5616 struct ipr_cmnd *ipr_cmd;
5617 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5618 int num_hrrq = 0;
5619
5620 /* If interrupts are disabled, ignore the interrupt */
5621 if (!hrr_queue->allow_interrupts)
5622 return 0;
5623
5624 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5625 hrr_queue->toggle_bit) {
5626
5627 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5628 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5629 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5630
5631 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5632 cmd_index < hrr_queue->min_cmd_id)) {
5633 ipr_isr_eh(ioa_cfg,
5634 "Invalid response handle from IOA: ",
5635 cmd_index);
5636 break;
5637 }
5638
5639 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5640 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5641
5642 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5643
5644 list_move_tail(&ipr_cmd->queue, doneq);
5645
5646 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5647 hrr_queue->hrrq_curr++;
5648 } else {
5649 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5650 hrr_queue->toggle_bit ^= 1u;
5651 }
5652 num_hrrq++;
5653 if (budget > 0 && num_hrrq >= budget)
5654 break;
5655 }
5656
5657 return num_hrrq;
5658 }
5659
5660 static int ipr_iopoll(struct irq_poll *iop, int budget)
5661 {
5662 struct ipr_ioa_cfg *ioa_cfg;
5663 struct ipr_hrr_queue *hrrq;
5664 struct ipr_cmnd *ipr_cmd, *temp;
5665 unsigned long hrrq_flags;
5666 int completed_ops;
5667 LIST_HEAD(doneq);
5668
5669 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5670 ioa_cfg = hrrq->ioa_cfg;
5671
5672 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5673 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5674
5675 if (completed_ops < budget)
5676 irq_poll_complete(iop);
5677 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5678
5679 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5680 list_del(&ipr_cmd->queue);
5681 del_timer(&ipr_cmd->timer);
5682 ipr_cmd->fast_done(ipr_cmd);
5683 }
5684
5685 return completed_ops;
5686 }
5687
5688 /**
5689 * ipr_isr - Interrupt service routine
5690 * @irq: irq number
5691 * @devp: pointer to ioa config struct
5692 *
5693 * Return value:
5694 * IRQ_NONE / IRQ_HANDLED
5695 **/
5696 static irqreturn_t ipr_isr(int irq, void *devp)
5697 {
5698 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5699 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5700 unsigned long hrrq_flags = 0;
5701 u32 int_reg = 0;
5702 int num_hrrq = 0;
5703 int irq_none = 0;
5704 struct ipr_cmnd *ipr_cmd, *temp;
5705 irqreturn_t rc = IRQ_NONE;
5706 LIST_HEAD(doneq);
5707
5708 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5709 /* If interrupts are disabled, ignore the interrupt */
5710 if (!hrrq->allow_interrupts) {
5711 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5712 return IRQ_NONE;
5713 }
5714
5715 while (1) {
5716 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5717 rc = IRQ_HANDLED;
5718
5719 if (!ioa_cfg->clear_isr)
5720 break;
5721
5722 /* Clear the PCI interrupt */
5723 num_hrrq = 0;
5724 do {
5725 writel(IPR_PCII_HRRQ_UPDATED,
5726 ioa_cfg->regs.clr_interrupt_reg32);
5727 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5728 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5729 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5730
5731 } else if (rc == IRQ_NONE && irq_none == 0) {
5732 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5733 irq_none++;
5734 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5735 int_reg & IPR_PCII_HRRQ_UPDATED) {
5736 ipr_isr_eh(ioa_cfg,
5737 "Error clearing HRRQ: ", num_hrrq);
5738 rc = IRQ_HANDLED;
5739 break;
5740 } else
5741 break;
5742 }
5743
5744 if (unlikely(rc == IRQ_NONE))
5745 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5746
5747 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5748 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5749 list_del(&ipr_cmd->queue);
5750 del_timer(&ipr_cmd->timer);
5751 ipr_cmd->fast_done(ipr_cmd);
5752 }
5753 return rc;
5754 }
5755
5756 /**
5757 * ipr_isr_mhrrq - Interrupt service routine
5758 * @irq: irq number
5759 * @devp: pointer to ioa config struct
5760 *
5761 * Return value:
5762 * IRQ_NONE / IRQ_HANDLED
5763 **/
5764 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5765 {
5766 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5767 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5768 unsigned long hrrq_flags = 0;
5769 struct ipr_cmnd *ipr_cmd, *temp;
5770 irqreturn_t rc = IRQ_NONE;
5771 LIST_HEAD(doneq);
5772
5773 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5774
5775 /* If interrupts are disabled, ignore the interrupt */
5776 if (!hrrq->allow_interrupts) {
5777 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5778 return IRQ_NONE;
5779 }
5780
5781 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5782 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5783 hrrq->toggle_bit) {
5784 irq_poll_sched(&hrrq->iopoll);
5785 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5786 return IRQ_HANDLED;
5787 }
5788 } else {
5789 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5790 hrrq->toggle_bit)
5791
5792 if (ipr_process_hrrq(hrrq, -1, &doneq))
5793 rc = IRQ_HANDLED;
5794 }
5795
5796 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5797
5798 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5799 list_del(&ipr_cmd->queue);
5800 del_timer(&ipr_cmd->timer);
5801 ipr_cmd->fast_done(ipr_cmd);
5802 }
5803 return rc;
5804 }
5805
5806 /**
5807 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5808 * @ioa_cfg: ioa config struct
5809 * @ipr_cmd: ipr command struct
5810 *
5811 * Return value:
5812 * 0 on success / -1 on failure
5813 **/
5814 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5815 struct ipr_cmnd *ipr_cmd)
5816 {
5817 int i, nseg;
5818 struct scatterlist *sg;
5819 u32 length;
5820 u32 ioadl_flags = 0;
5821 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5822 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5823 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5824
5825 length = scsi_bufflen(scsi_cmd);
5826 if (!length)
5827 return 0;
5828
5829 nseg = scsi_dma_map(scsi_cmd);
5830 if (nseg < 0) {
5831 if (printk_ratelimit())
5832 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5833 return -1;
5834 }
5835
5836 ipr_cmd->dma_use_sg = nseg;
5837
5838 ioarcb->data_transfer_length = cpu_to_be32(length);
5839 ioarcb->ioadl_len =
5840 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5841
5842 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5843 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5844 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5845 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5846 ioadl_flags = IPR_IOADL_FLAGS_READ;
5847
5848 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5849 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5850 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5851 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5852 }
5853
5854 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5855 return 0;
5856 }
5857
5858 /**
5859 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5860 * @ioa_cfg: ioa config struct
5861 * @ipr_cmd: ipr command struct
5862 *
5863 * Return value:
5864 * 0 on success / -1 on failure
5865 **/
5866 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5867 struct ipr_cmnd *ipr_cmd)
5868 {
5869 int i, nseg;
5870 struct scatterlist *sg;
5871 u32 length;
5872 u32 ioadl_flags = 0;
5873 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5874 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5875 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5876
5877 length = scsi_bufflen(scsi_cmd);
5878 if (!length)
5879 return 0;
5880
5881 nseg = scsi_dma_map(scsi_cmd);
5882 if (nseg < 0) {
5883 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5884 return -1;
5885 }
5886
5887 ipr_cmd->dma_use_sg = nseg;
5888
5889 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5890 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5891 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5892 ioarcb->data_transfer_length = cpu_to_be32(length);
5893 ioarcb->ioadl_len =
5894 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5895 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5896 ioadl_flags = IPR_IOADL_FLAGS_READ;
5897 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5898 ioarcb->read_ioadl_len =
5899 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5900 }
5901
5902 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5903 ioadl = ioarcb->u.add_data.u.ioadl;
5904 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5905 offsetof(struct ipr_ioarcb, u.add_data));
5906 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5907 }
5908
5909 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5910 ioadl[i].flags_and_data_len =
5911 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5912 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5913 }
5914
5915 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5916 return 0;
5917 }
5918
5919 /**
5920 * ipr_erp_done - Process completion of ERP for a device
5921 * @ipr_cmd: ipr command struct
5922 *
5923 * This function copies the sense buffer into the scsi_cmd
5924 * struct and pushes the scsi_done function.
5925 *
5926 * Return value:
5927 * nothing
5928 **/
5929 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5930 {
5931 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5932 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5933 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5934
5935 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5936 scsi_cmd->result |= (DID_ERROR << 16);
5937 scmd_printk(KERN_ERR, scsi_cmd,
5938 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5939 } else {
5940 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5941 SCSI_SENSE_BUFFERSIZE);
5942 }
5943
5944 if (res) {
5945 if (!ipr_is_naca_model(res))
5946 res->needs_sync_complete = 1;
5947 res->in_erp = 0;
5948 }
5949 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5950 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5951 scsi_cmd->scsi_done(scsi_cmd);
5952 }
5953
5954 /**
5955 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5956 * @ipr_cmd: ipr command struct
5957 *
5958 * Return value:
5959 * none
5960 **/
5961 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5962 {
5963 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5964 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5965 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5966
5967 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5968 ioarcb->data_transfer_length = 0;
5969 ioarcb->read_data_transfer_length = 0;
5970 ioarcb->ioadl_len = 0;
5971 ioarcb->read_ioadl_len = 0;
5972 ioasa->hdr.ioasc = 0;
5973 ioasa->hdr.residual_data_len = 0;
5974
5975 if (ipr_cmd->ioa_cfg->sis64)
5976 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5977 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5978 else {
5979 ioarcb->write_ioadl_addr =
5980 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5981 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5982 }
5983 }
5984
5985 /**
5986 * ipr_erp_request_sense - Send request sense to a device
5987 * @ipr_cmd: ipr command struct
5988 *
5989 * This function sends a request sense to a device as a result
5990 * of a check condition.
5991 *
5992 * Return value:
5993 * nothing
5994 **/
5995 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5996 {
5997 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5998 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5999
6000 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6001 ipr_erp_done(ipr_cmd);
6002 return;
6003 }
6004
6005 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6006
6007 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
6008 cmd_pkt->cdb[0] = REQUEST_SENSE;
6009 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
6010 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
6011 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6012 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
6013
6014 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
6015 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
6016
6017 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
6018 IPR_REQUEST_SENSE_TIMEOUT * 2);
6019 }
6020
6021 /**
6022 * ipr_erp_cancel_all - Send cancel all to a device
6023 * @ipr_cmd: ipr command struct
6024 *
6025 * This function sends a cancel all to a device to clear the
6026 * queue. If we are running TCQ on the device, QERR is set to 1,
6027 * which means all outstanding ops have been dropped on the floor.
6028 * Cancel all will return them to us.
6029 *
6030 * Return value:
6031 * nothing
6032 **/
6033 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
6034 {
6035 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6036 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6037 struct ipr_cmd_pkt *cmd_pkt;
6038
6039 res->in_erp = 1;
6040
6041 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6042
6043 if (!scsi_cmd->device->simple_tags) {
6044 ipr_erp_request_sense(ipr_cmd);
6045 return;
6046 }
6047
6048 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6049 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
6050 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
6051
6052 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
6053 IPR_CANCEL_ALL_TIMEOUT);
6054 }
6055
6056 /**
6057 * ipr_dump_ioasa - Dump contents of IOASA
6058 * @ioa_cfg: ioa config struct
6059 * @ipr_cmd: ipr command struct
6060 * @res: resource entry struct
6061 *
6062 * This function is invoked by the interrupt handler when ops
6063 * fail. It will log the IOASA if appropriate. Only called
6064 * for GPDD ops.
6065 *
6066 * Return value:
6067 * none
6068 **/
6069 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
6070 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
6071 {
6072 int i;
6073 u16 data_len;
6074 u32 ioasc, fd_ioasc;
6075 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6076 __be32 *ioasa_data = (__be32 *)ioasa;
6077 int error_index;
6078
6079 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
6080 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
6081
6082 if (0 == ioasc)
6083 return;
6084
6085 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
6086 return;
6087
6088 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6089 error_index = ipr_get_error(fd_ioasc);
6090 else
6091 error_index = ipr_get_error(ioasc);
6092
6093 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6094 /* Don't log an error if the IOA already logged one */
6095 if (ioasa->hdr.ilid != 0)
6096 return;
6097
6098 if (!ipr_is_gscsi(res))
6099 return;
6100
6101 if (ipr_error_table[error_index].log_ioasa == 0)
6102 return;
6103 }
6104
6105 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6106
6107 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6108 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6109 data_len = sizeof(struct ipr_ioasa64);
6110 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6111 data_len = sizeof(struct ipr_ioasa);
6112
6113 ipr_err("IOASA Dump:\n");
6114
6115 for (i = 0; i < data_len / 4; i += 4) {
6116 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6117 be32_to_cpu(ioasa_data[i]),
6118 be32_to_cpu(ioasa_data[i+1]),
6119 be32_to_cpu(ioasa_data[i+2]),
6120 be32_to_cpu(ioasa_data[i+3]));
6121 }
6122 }
6123
6124 /**
6125 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6126 * @ioasa: IOASA
6127 * @sense_buf: sense data buffer
6128 *
6129 * Return value:
6130 * none
6131 **/
6132 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6133 {
6134 u32 failing_lba;
6135 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6136 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6137 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6138 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6139
6140 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6141
6142 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6143 return;
6144
6145 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6146
6147 if (ipr_is_vset_device(res) &&
6148 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6149 ioasa->u.vset.failing_lba_hi != 0) {
6150 sense_buf[0] = 0x72;
6151 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6152 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6153 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6154
6155 sense_buf[7] = 12;
6156 sense_buf[8] = 0;
6157 sense_buf[9] = 0x0A;
6158 sense_buf[10] = 0x80;
6159
6160 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6161
6162 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6163 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6164 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6165 sense_buf[15] = failing_lba & 0x000000ff;
6166
6167 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6168
6169 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6170 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6171 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6172 sense_buf[19] = failing_lba & 0x000000ff;
6173 } else {
6174 sense_buf[0] = 0x70;
6175 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6176 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6177 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6178
6179 /* Illegal request */
6180 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6181 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6182 sense_buf[7] = 10; /* additional length */
6183
6184 /* IOARCB was in error */
6185 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6186 sense_buf[15] = 0xC0;
6187 else /* Parameter data was invalid */
6188 sense_buf[15] = 0x80;
6189
6190 sense_buf[16] =
6191 ((IPR_FIELD_POINTER_MASK &
6192 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6193 sense_buf[17] =
6194 (IPR_FIELD_POINTER_MASK &
6195 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6196 } else {
6197 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6198 if (ipr_is_vset_device(res))
6199 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6200 else
6201 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6202
6203 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6204 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6205 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6206 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6207 sense_buf[6] = failing_lba & 0x000000ff;
6208 }
6209
6210 sense_buf[7] = 6; /* additional length */
6211 }
6212 }
6213 }
6214
6215 /**
6216 * ipr_get_autosense - Copy autosense data to sense buffer
6217 * @ipr_cmd: ipr command struct
6218 *
6219 * This function copies the autosense buffer to the buffer
6220 * in the scsi_cmd, if there is autosense available.
6221 *
6222 * Return value:
6223 * 1 if autosense was available / 0 if not
6224 **/
6225 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6226 {
6227 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6228 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6229
6230 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6231 return 0;
6232
6233 if (ipr_cmd->ioa_cfg->sis64)
6234 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6235 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6236 SCSI_SENSE_BUFFERSIZE));
6237 else
6238 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6239 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6240 SCSI_SENSE_BUFFERSIZE));
6241 return 1;
6242 }
6243
6244 /**
6245 * ipr_erp_start - Process an error response for a SCSI op
6246 * @ioa_cfg: ioa config struct
6247 * @ipr_cmd: ipr command struct
6248 *
6249 * This function determines whether or not to initiate ERP
6250 * on the affected device.
6251 *
6252 * Return value:
6253 * nothing
6254 **/
6255 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6256 struct ipr_cmnd *ipr_cmd)
6257 {
6258 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6259 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6260 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6261 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6262
6263 if (!res) {
6264 ipr_scsi_eh_done(ipr_cmd);
6265 return;
6266 }
6267
6268 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6269 ipr_gen_sense(ipr_cmd);
6270
6271 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6272
6273 switch (masked_ioasc) {
6274 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6275 if (ipr_is_naca_model(res))
6276 scsi_cmd->result |= (DID_ABORT << 16);
6277 else
6278 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6279 break;
6280 case IPR_IOASC_IR_RESOURCE_HANDLE:
6281 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6282 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6283 break;
6284 case IPR_IOASC_HW_SEL_TIMEOUT:
6285 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6286 if (!ipr_is_naca_model(res))
6287 res->needs_sync_complete = 1;
6288 break;
6289 case IPR_IOASC_SYNC_REQUIRED:
6290 if (!res->in_erp)
6291 res->needs_sync_complete = 1;
6292 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6293 break;
6294 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6295 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6296 /*
6297 * exception: do not set DID_PASSTHROUGH on CHECK CONDITION
6298 * so SCSI mid-layer and upper layers handle it accordingly.
6299 */
6300 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION)
6301 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6302 break;
6303 case IPR_IOASC_BUS_WAS_RESET:
6304 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6305 /*
6306 * Report the bus reset and ask for a retry. The device
6307 * will give CC/UA the next command.
6308 */
6309 if (!res->resetting_device)
6310 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6311 scsi_cmd->result |= (DID_ERROR << 16);
6312 if (!ipr_is_naca_model(res))
6313 res->needs_sync_complete = 1;
6314 break;
6315 case IPR_IOASC_HW_DEV_BUS_STATUS:
6316 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6317 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6318 if (!ipr_get_autosense(ipr_cmd)) {
6319 if (!ipr_is_naca_model(res)) {
6320 ipr_erp_cancel_all(ipr_cmd);
6321 return;
6322 }
6323 }
6324 }
6325 if (!ipr_is_naca_model(res))
6326 res->needs_sync_complete = 1;
6327 break;
6328 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6329 break;
6330 case IPR_IOASC_IR_NON_OPTIMIZED:
6331 if (res->raw_mode) {
6332 res->raw_mode = 0;
6333 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6334 } else
6335 scsi_cmd->result |= (DID_ERROR << 16);
6336 break;
6337 default:
6338 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6339 scsi_cmd->result |= (DID_ERROR << 16);
6340 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6341 res->needs_sync_complete = 1;
6342 break;
6343 }
6344
6345 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6346 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6347 scsi_cmd->scsi_done(scsi_cmd);
6348 }
6349
6350 /**
6351 * ipr_scsi_done - mid-layer done function
6352 * @ipr_cmd: ipr command struct
6353 *
6354 * This function is invoked by the interrupt handler for
6355 * ops generated by the SCSI mid-layer
6356 *
6357 * Return value:
6358 * none
6359 **/
6360 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6361 {
6362 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6363 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6364 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6365 unsigned long lock_flags;
6366
6367 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6368
6369 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6370 scsi_dma_unmap(scsi_cmd);
6371
6372 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6373 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6374 scsi_cmd->scsi_done(scsi_cmd);
6375 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6376 } else {
6377 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6378 spin_lock(&ipr_cmd->hrrq->_lock);
6379 ipr_erp_start(ioa_cfg, ipr_cmd);
6380 spin_unlock(&ipr_cmd->hrrq->_lock);
6381 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6382 }
6383 }
6384
6385 /**
6386 * ipr_queuecommand - Queue a mid-layer request
6387 * @shost: scsi host struct
6388 * @scsi_cmd: scsi command struct
6389 *
6390 * This function queues a request generated by the mid-layer.
6391 *
6392 * Return value:
6393 * 0 on success
6394 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6395 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6396 **/
6397 static int ipr_queuecommand(struct Scsi_Host *shost,
6398 struct scsi_cmnd *scsi_cmd)
6399 {
6400 struct ipr_ioa_cfg *ioa_cfg;
6401 struct ipr_resource_entry *res;
6402 struct ipr_ioarcb *ioarcb;
6403 struct ipr_cmnd *ipr_cmd;
6404 unsigned long hrrq_flags, lock_flags;
6405 int rc;
6406 struct ipr_hrr_queue *hrrq;
6407 int hrrq_id;
6408
6409 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6410
6411 scsi_cmd->result = (DID_OK << 16);
6412 res = scsi_cmd->device->hostdata;
6413
6414 if (ipr_is_gata(res) && res->sata_port) {
6415 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6416 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6417 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6418 return rc;
6419 }
6420
6421 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6422 hrrq = &ioa_cfg->hrrq[hrrq_id];
6423
6424 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6425 /*
6426 * We are currently blocking all devices due to a host reset
6427 * We have told the host to stop giving us new requests, but
6428 * ERP ops don't count. FIXME
6429 */
6430 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6431 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6432 return SCSI_MLQUEUE_HOST_BUSY;
6433 }
6434
6435 /*
6436 * FIXME - Create scsi_set_host_offline interface
6437 * and the ioa_is_dead check can be removed
6438 */
6439 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6440 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6441 goto err_nodev;
6442 }
6443
6444 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6445 if (ipr_cmd == NULL) {
6446 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6447 return SCSI_MLQUEUE_HOST_BUSY;
6448 }
6449 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6450
6451 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6452 ioarcb = &ipr_cmd->ioarcb;
6453
6454 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6455 ipr_cmd->scsi_cmd = scsi_cmd;
6456 ipr_cmd->done = ipr_scsi_eh_done;
6457
6458 if (ipr_is_gscsi(res)) {
6459 if (scsi_cmd->underflow == 0)
6460 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6461
6462 if (res->reset_occurred) {
6463 res->reset_occurred = 0;
6464 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6465 }
6466 }
6467
6468 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6469 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6470
6471 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6472 if (scsi_cmd->flags & SCMD_TAGGED)
6473 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6474 else
6475 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6476 }
6477
6478 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6479 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6480 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6481 }
6482 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6483 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6484
6485 if (scsi_cmd->underflow == 0)
6486 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6487 }
6488
6489 if (ioa_cfg->sis64)
6490 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6491 else
6492 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6493
6494 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6495 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6496 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6497 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6498 if (!rc)
6499 scsi_dma_unmap(scsi_cmd);
6500 return SCSI_MLQUEUE_HOST_BUSY;
6501 }
6502
6503 if (unlikely(hrrq->ioa_is_dead)) {
6504 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6505 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6506 scsi_dma_unmap(scsi_cmd);
6507 goto err_nodev;
6508 }
6509
6510 ioarcb->res_handle = res->res_handle;
6511 if (res->needs_sync_complete) {
6512 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6513 res->needs_sync_complete = 0;
6514 }
6515 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6516 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6517 ipr_send_command(ipr_cmd);
6518 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6519 return 0;
6520
6521 err_nodev:
6522 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6523 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6524 scsi_cmd->result = (DID_NO_CONNECT << 16);
6525 scsi_cmd->scsi_done(scsi_cmd);
6526 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6527 return 0;
6528 }
6529
6530 /**
6531 * ipr_ioctl - IOCTL handler
6532 * @sdev: scsi device struct
6533 * @cmd: IOCTL cmd
6534 * @arg: IOCTL arg
6535 *
6536 * Return value:
6537 * 0 on success / other on failure
6538 **/
6539 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6540 {
6541 struct ipr_resource_entry *res;
6542
6543 res = (struct ipr_resource_entry *)sdev->hostdata;
6544 if (res && ipr_is_gata(res)) {
6545 if (cmd == HDIO_GET_IDENTITY)
6546 return -ENOTTY;
6547 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6548 }
6549
6550 return -EINVAL;
6551 }
6552
6553 /**
6554 * ipr_info - Get information about the card/driver
6555 * @scsi_host: scsi host struct
6556 *
6557 * Return value:
6558 * pointer to buffer with description string
6559 **/
6560 static const char *ipr_ioa_info(struct Scsi_Host *host)
6561 {
6562 static char buffer[512];
6563 struct ipr_ioa_cfg *ioa_cfg;
6564 unsigned long lock_flags = 0;
6565
6566 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6567
6568 spin_lock_irqsave(host->host_lock, lock_flags);
6569 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6570 spin_unlock_irqrestore(host->host_lock, lock_flags);
6571
6572 return buffer;
6573 }
6574
6575 static struct scsi_host_template driver_template = {
6576 .module = THIS_MODULE,
6577 .name = "IPR",
6578 .info = ipr_ioa_info,
6579 .ioctl = ipr_ioctl,
6580 .queuecommand = ipr_queuecommand,
6581 .eh_abort_handler = ipr_eh_abort,
6582 .eh_device_reset_handler = ipr_eh_dev_reset,
6583 .eh_host_reset_handler = ipr_eh_host_reset,
6584 .slave_alloc = ipr_slave_alloc,
6585 .slave_configure = ipr_slave_configure,
6586 .slave_destroy = ipr_slave_destroy,
6587 .scan_finished = ipr_scan_finished,
6588 .target_alloc = ipr_target_alloc,
6589 .target_destroy = ipr_target_destroy,
6590 .change_queue_depth = ipr_change_queue_depth,
6591 .bios_param = ipr_biosparam,
6592 .can_queue = IPR_MAX_COMMANDS,
6593 .this_id = -1,
6594 .sg_tablesize = IPR_MAX_SGLIST,
6595 .max_sectors = IPR_IOA_MAX_SECTORS,
6596 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6597 .use_clustering = ENABLE_CLUSTERING,
6598 .shost_attrs = ipr_ioa_attrs,
6599 .sdev_attrs = ipr_dev_attrs,
6600 .proc_name = IPR_NAME,
6601 };
6602
6603 /**
6604 * ipr_ata_phy_reset - libata phy_reset handler
6605 * @ap: ata port to reset
6606 *
6607 **/
6608 static void ipr_ata_phy_reset(struct ata_port *ap)
6609 {
6610 unsigned long flags;
6611 struct ipr_sata_port *sata_port = ap->private_data;
6612 struct ipr_resource_entry *res = sata_port->res;
6613 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6614 int rc;
6615
6616 ENTER;
6617 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6618 while (ioa_cfg->in_reset_reload) {
6619 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6620 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6621 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6622 }
6623
6624 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6625 goto out_unlock;
6626
6627 rc = ipr_device_reset(ioa_cfg, res);
6628
6629 if (rc) {
6630 ap->link.device[0].class = ATA_DEV_NONE;
6631 goto out_unlock;
6632 }
6633
6634 ap->link.device[0].class = res->ata_class;
6635 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6636 ap->link.device[0].class = ATA_DEV_NONE;
6637
6638 out_unlock:
6639 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6640 LEAVE;
6641 }
6642
6643 /**
6644 * ipr_ata_post_internal - Cleanup after an internal command
6645 * @qc: ATA queued command
6646 *
6647 * Return value:
6648 * none
6649 **/
6650 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6651 {
6652 struct ipr_sata_port *sata_port = qc->ap->private_data;
6653 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6654 struct ipr_cmnd *ipr_cmd;
6655 struct ipr_hrr_queue *hrrq;
6656 unsigned long flags;
6657
6658 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6659 while (ioa_cfg->in_reset_reload) {
6660 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6661 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6662 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6663 }
6664
6665 for_each_hrrq(hrrq, ioa_cfg) {
6666 spin_lock(&hrrq->_lock);
6667 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6668 if (ipr_cmd->qc == qc) {
6669 ipr_device_reset(ioa_cfg, sata_port->res);
6670 break;
6671 }
6672 }
6673 spin_unlock(&hrrq->_lock);
6674 }
6675 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6676 }
6677
6678 /**
6679 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6680 * @regs: destination
6681 * @tf: source ATA taskfile
6682 *
6683 * Return value:
6684 * none
6685 **/
6686 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6687 struct ata_taskfile *tf)
6688 {
6689 regs->feature = tf->feature;
6690 regs->nsect = tf->nsect;
6691 regs->lbal = tf->lbal;
6692 regs->lbam = tf->lbam;
6693 regs->lbah = tf->lbah;
6694 regs->device = tf->device;
6695 regs->command = tf->command;
6696 regs->hob_feature = tf->hob_feature;
6697 regs->hob_nsect = tf->hob_nsect;
6698 regs->hob_lbal = tf->hob_lbal;
6699 regs->hob_lbam = tf->hob_lbam;
6700 regs->hob_lbah = tf->hob_lbah;
6701 regs->ctl = tf->ctl;
6702 }
6703
6704 /**
6705 * ipr_sata_done - done function for SATA commands
6706 * @ipr_cmd: ipr command struct
6707 *
6708 * This function is invoked by the interrupt handler for
6709 * ops generated by the SCSI mid-layer to SATA devices
6710 *
6711 * Return value:
6712 * none
6713 **/
6714 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6715 {
6716 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6717 struct ata_queued_cmd *qc = ipr_cmd->qc;
6718 struct ipr_sata_port *sata_port = qc->ap->private_data;
6719 struct ipr_resource_entry *res = sata_port->res;
6720 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6721
6722 spin_lock(&ipr_cmd->hrrq->_lock);
6723 if (ipr_cmd->ioa_cfg->sis64)
6724 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6725 sizeof(struct ipr_ioasa_gata));
6726 else
6727 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6728 sizeof(struct ipr_ioasa_gata));
6729 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6730
6731 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6732 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6733
6734 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6735 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6736 else
6737 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6738 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6739 spin_unlock(&ipr_cmd->hrrq->_lock);
6740 ata_qc_complete(qc);
6741 }
6742
6743 /**
6744 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6745 * @ipr_cmd: ipr command struct
6746 * @qc: ATA queued command
6747 *
6748 **/
6749 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6750 struct ata_queued_cmd *qc)
6751 {
6752 u32 ioadl_flags = 0;
6753 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6754 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6755 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6756 int len = qc->nbytes;
6757 struct scatterlist *sg;
6758 unsigned int si;
6759 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6760
6761 if (len == 0)
6762 return;
6763
6764 if (qc->dma_dir == DMA_TO_DEVICE) {
6765 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6766 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6767 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6768 ioadl_flags = IPR_IOADL_FLAGS_READ;
6769
6770 ioarcb->data_transfer_length = cpu_to_be32(len);
6771 ioarcb->ioadl_len =
6772 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6773 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6774 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6775
6776 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6777 ioadl64->flags = cpu_to_be32(ioadl_flags);
6778 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6779 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6780
6781 last_ioadl64 = ioadl64;
6782 ioadl64++;
6783 }
6784
6785 if (likely(last_ioadl64))
6786 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6787 }
6788
6789 /**
6790 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6791 * @ipr_cmd: ipr command struct
6792 * @qc: ATA queued command
6793 *
6794 **/
6795 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6796 struct ata_queued_cmd *qc)
6797 {
6798 u32 ioadl_flags = 0;
6799 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6800 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6801 struct ipr_ioadl_desc *last_ioadl = NULL;
6802 int len = qc->nbytes;
6803 struct scatterlist *sg;
6804 unsigned int si;
6805
6806 if (len == 0)
6807 return;
6808
6809 if (qc->dma_dir == DMA_TO_DEVICE) {
6810 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6811 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6812 ioarcb->data_transfer_length = cpu_to_be32(len);
6813 ioarcb->ioadl_len =
6814 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6815 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6816 ioadl_flags = IPR_IOADL_FLAGS_READ;
6817 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6818 ioarcb->read_ioadl_len =
6819 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6820 }
6821
6822 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6823 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6824 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6825
6826 last_ioadl = ioadl;
6827 ioadl++;
6828 }
6829
6830 if (likely(last_ioadl))
6831 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6832 }
6833
6834 /**
6835 * ipr_qc_defer - Get a free ipr_cmd
6836 * @qc: queued command
6837 *
6838 * Return value:
6839 * 0 if success
6840 **/
6841 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6842 {
6843 struct ata_port *ap = qc->ap;
6844 struct ipr_sata_port *sata_port = ap->private_data;
6845 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6846 struct ipr_cmnd *ipr_cmd;
6847 struct ipr_hrr_queue *hrrq;
6848 int hrrq_id;
6849
6850 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6851 hrrq = &ioa_cfg->hrrq[hrrq_id];
6852
6853 qc->lldd_task = NULL;
6854 spin_lock(&hrrq->_lock);
6855 if (unlikely(hrrq->ioa_is_dead)) {
6856 spin_unlock(&hrrq->_lock);
6857 return 0;
6858 }
6859
6860 if (unlikely(!hrrq->allow_cmds)) {
6861 spin_unlock(&hrrq->_lock);
6862 return ATA_DEFER_LINK;
6863 }
6864
6865 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6866 if (ipr_cmd == NULL) {
6867 spin_unlock(&hrrq->_lock);
6868 return ATA_DEFER_LINK;
6869 }
6870
6871 qc->lldd_task = ipr_cmd;
6872 spin_unlock(&hrrq->_lock);
6873 return 0;
6874 }
6875
6876 /**
6877 * ipr_qc_issue - Issue a SATA qc to a device
6878 * @qc: queued command
6879 *
6880 * Return value:
6881 * 0 if success
6882 **/
6883 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6884 {
6885 struct ata_port *ap = qc->ap;
6886 struct ipr_sata_port *sata_port = ap->private_data;
6887 struct ipr_resource_entry *res = sata_port->res;
6888 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6889 struct ipr_cmnd *ipr_cmd;
6890 struct ipr_ioarcb *ioarcb;
6891 struct ipr_ioarcb_ata_regs *regs;
6892
6893 if (qc->lldd_task == NULL)
6894 ipr_qc_defer(qc);
6895
6896 ipr_cmd = qc->lldd_task;
6897 if (ipr_cmd == NULL)
6898 return AC_ERR_SYSTEM;
6899
6900 qc->lldd_task = NULL;
6901 spin_lock(&ipr_cmd->hrrq->_lock);
6902 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6903 ipr_cmd->hrrq->ioa_is_dead)) {
6904 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6905 spin_unlock(&ipr_cmd->hrrq->_lock);
6906 return AC_ERR_SYSTEM;
6907 }
6908
6909 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6910 ioarcb = &ipr_cmd->ioarcb;
6911
6912 if (ioa_cfg->sis64) {
6913 regs = &ipr_cmd->i.ata_ioadl.regs;
6914 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6915 } else
6916 regs = &ioarcb->u.add_data.u.regs;
6917
6918 memset(regs, 0, sizeof(*regs));
6919 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6920
6921 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6922 ipr_cmd->qc = qc;
6923 ipr_cmd->done = ipr_sata_done;
6924 ipr_cmd->ioarcb.res_handle = res->res_handle;
6925 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6926 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6927 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6928 ipr_cmd->dma_use_sg = qc->n_elem;
6929
6930 if (ioa_cfg->sis64)
6931 ipr_build_ata_ioadl64(ipr_cmd, qc);
6932 else
6933 ipr_build_ata_ioadl(ipr_cmd, qc);
6934
6935 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6936 ipr_copy_sata_tf(regs, &qc->tf);
6937 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6938 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6939
6940 switch (qc->tf.protocol) {
6941 case ATA_PROT_NODATA:
6942 case ATA_PROT_PIO:
6943 break;
6944
6945 case ATA_PROT_DMA:
6946 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6947 break;
6948
6949 case ATAPI_PROT_PIO:
6950 case ATAPI_PROT_NODATA:
6951 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6952 break;
6953
6954 case ATAPI_PROT_DMA:
6955 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6956 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6957 break;
6958
6959 default:
6960 WARN_ON(1);
6961 spin_unlock(&ipr_cmd->hrrq->_lock);
6962 return AC_ERR_INVALID;
6963 }
6964
6965 ipr_send_command(ipr_cmd);
6966 spin_unlock(&ipr_cmd->hrrq->_lock);
6967
6968 return 0;
6969 }
6970
6971 /**
6972 * ipr_qc_fill_rtf - Read result TF
6973 * @qc: ATA queued command
6974 *
6975 * Return value:
6976 * true
6977 **/
6978 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6979 {
6980 struct ipr_sata_port *sata_port = qc->ap->private_data;
6981 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6982 struct ata_taskfile *tf = &qc->result_tf;
6983
6984 tf->feature = g->error;
6985 tf->nsect = g->nsect;
6986 tf->lbal = g->lbal;
6987 tf->lbam = g->lbam;
6988 tf->lbah = g->lbah;
6989 tf->device = g->device;
6990 tf->command = g->status;
6991 tf->hob_nsect = g->hob_nsect;
6992 tf->hob_lbal = g->hob_lbal;
6993 tf->hob_lbam = g->hob_lbam;
6994 tf->hob_lbah = g->hob_lbah;
6995
6996 return true;
6997 }
6998
6999 static struct ata_port_operations ipr_sata_ops = {
7000 .phy_reset = ipr_ata_phy_reset,
7001 .hardreset = ipr_sata_reset,
7002 .post_internal_cmd = ipr_ata_post_internal,
7003 .qc_prep = ata_noop_qc_prep,
7004 .qc_defer = ipr_qc_defer,
7005 .qc_issue = ipr_qc_issue,
7006 .qc_fill_rtf = ipr_qc_fill_rtf,
7007 .port_start = ata_sas_port_start,
7008 .port_stop = ata_sas_port_stop
7009 };
7010
7011 static struct ata_port_info sata_port_info = {
7012 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
7013 ATA_FLAG_SAS_HOST,
7014 .pio_mask = ATA_PIO4_ONLY,
7015 .mwdma_mask = ATA_MWDMA2,
7016 .udma_mask = ATA_UDMA6,
7017 .port_ops = &ipr_sata_ops
7018 };
7019
7020 #ifdef CONFIG_PPC_PSERIES
7021 static const u16 ipr_blocked_processors[] = {
7022 PVR_NORTHSTAR,
7023 PVR_PULSAR,
7024 PVR_POWER4,
7025 PVR_ICESTAR,
7026 PVR_SSTAR,
7027 PVR_POWER4p,
7028 PVR_630,
7029 PVR_630p
7030 };
7031
7032 /**
7033 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
7034 * @ioa_cfg: ioa cfg struct
7035 *
7036 * Adapters that use Gemstone revision < 3.1 do not work reliably on
7037 * certain pSeries hardware. This function determines if the given
7038 * adapter is in one of these confgurations or not.
7039 *
7040 * Return value:
7041 * 1 if adapter is not supported / 0 if adapter is supported
7042 **/
7043 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
7044 {
7045 int i;
7046
7047 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
7048 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
7049 if (pvr_version_is(ipr_blocked_processors[i]))
7050 return 1;
7051 }
7052 }
7053 return 0;
7054 }
7055 #else
7056 #define ipr_invalid_adapter(ioa_cfg) 0
7057 #endif
7058
7059 /**
7060 * ipr_ioa_bringdown_done - IOA bring down completion.
7061 * @ipr_cmd: ipr command struct
7062 *
7063 * This function processes the completion of an adapter bring down.
7064 * It wakes any reset sleepers.
7065 *
7066 * Return value:
7067 * IPR_RC_JOB_RETURN
7068 **/
7069 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
7070 {
7071 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7072 int i;
7073
7074 ENTER;
7075 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
7076 ipr_trace;
7077 spin_unlock_irq(ioa_cfg->host->host_lock);
7078 scsi_unblock_requests(ioa_cfg->host);
7079 spin_lock_irq(ioa_cfg->host->host_lock);
7080 }
7081
7082 ioa_cfg->in_reset_reload = 0;
7083 ioa_cfg->reset_retries = 0;
7084 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
7085 spin_lock(&ioa_cfg->hrrq[i]._lock);
7086 ioa_cfg->hrrq[i].ioa_is_dead = 1;
7087 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7088 }
7089 wmb();
7090
7091 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7092 wake_up_all(&ioa_cfg->reset_wait_q);
7093 LEAVE;
7094
7095 return IPR_RC_JOB_RETURN;
7096 }
7097
7098 /**
7099 * ipr_ioa_reset_done - IOA reset completion.
7100 * @ipr_cmd: ipr command struct
7101 *
7102 * This function processes the completion of an adapter reset.
7103 * It schedules any necessary mid-layer add/removes and
7104 * wakes any reset sleepers.
7105 *
7106 * Return value:
7107 * IPR_RC_JOB_RETURN
7108 **/
7109 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7110 {
7111 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7112 struct ipr_resource_entry *res;
7113 int j;
7114
7115 ENTER;
7116 ioa_cfg->in_reset_reload = 0;
7117 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7118 spin_lock(&ioa_cfg->hrrq[j]._lock);
7119 ioa_cfg->hrrq[j].allow_cmds = 1;
7120 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7121 }
7122 wmb();
7123 ioa_cfg->reset_cmd = NULL;
7124 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7125
7126 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7127 if (res->add_to_ml || res->del_from_ml) {
7128 ipr_trace;
7129 break;
7130 }
7131 }
7132 schedule_work(&ioa_cfg->work_q);
7133
7134 for (j = 0; j < IPR_NUM_HCAMS; j++) {
7135 list_del_init(&ioa_cfg->hostrcb[j]->queue);
7136 if (j < IPR_NUM_LOG_HCAMS)
7137 ipr_send_hcam(ioa_cfg,
7138 IPR_HCAM_CDB_OP_CODE_LOG_DATA,
7139 ioa_cfg->hostrcb[j]);
7140 else
7141 ipr_send_hcam(ioa_cfg,
7142 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
7143 ioa_cfg->hostrcb[j]);
7144 }
7145
7146 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7147 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7148
7149 ioa_cfg->reset_retries = 0;
7150 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7151 wake_up_all(&ioa_cfg->reset_wait_q);
7152
7153 spin_unlock(ioa_cfg->host->host_lock);
7154 scsi_unblock_requests(ioa_cfg->host);
7155 spin_lock(ioa_cfg->host->host_lock);
7156
7157 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7158 scsi_block_requests(ioa_cfg->host);
7159
7160 schedule_work(&ioa_cfg->work_q);
7161 LEAVE;
7162 return IPR_RC_JOB_RETURN;
7163 }
7164
7165 /**
7166 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7167 * @supported_dev: supported device struct
7168 * @vpids: vendor product id struct
7169 *
7170 * Return value:
7171 * none
7172 **/
7173 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7174 struct ipr_std_inq_vpids *vpids)
7175 {
7176 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7177 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7178 supported_dev->num_records = 1;
7179 supported_dev->data_length =
7180 cpu_to_be16(sizeof(struct ipr_supported_device));
7181 supported_dev->reserved = 0;
7182 }
7183
7184 /**
7185 * ipr_set_supported_devs - Send Set Supported Devices for a device
7186 * @ipr_cmd: ipr command struct
7187 *
7188 * This function sends a Set Supported Devices to the adapter
7189 *
7190 * Return value:
7191 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7192 **/
7193 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7194 {
7195 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7196 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7197 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7198 struct ipr_resource_entry *res = ipr_cmd->u.res;
7199
7200 ipr_cmd->job_step = ipr_ioa_reset_done;
7201
7202 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7203 if (!ipr_is_scsi_disk(res))
7204 continue;
7205
7206 ipr_cmd->u.res = res;
7207 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7208
7209 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7210 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7211 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7212
7213 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7214 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7215 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7216 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7217
7218 ipr_init_ioadl(ipr_cmd,
7219 ioa_cfg->vpd_cbs_dma +
7220 offsetof(struct ipr_misc_cbs, supp_dev),
7221 sizeof(struct ipr_supported_device),
7222 IPR_IOADL_FLAGS_WRITE_LAST);
7223
7224 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7225 IPR_SET_SUP_DEVICE_TIMEOUT);
7226
7227 if (!ioa_cfg->sis64)
7228 ipr_cmd->job_step = ipr_set_supported_devs;
7229 LEAVE;
7230 return IPR_RC_JOB_RETURN;
7231 }
7232
7233 LEAVE;
7234 return IPR_RC_JOB_CONTINUE;
7235 }
7236
7237 /**
7238 * ipr_get_mode_page - Locate specified mode page
7239 * @mode_pages: mode page buffer
7240 * @page_code: page code to find
7241 * @len: minimum required length for mode page
7242 *
7243 * Return value:
7244 * pointer to mode page / NULL on failure
7245 **/
7246 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7247 u32 page_code, u32 len)
7248 {
7249 struct ipr_mode_page_hdr *mode_hdr;
7250 u32 page_length;
7251 u32 length;
7252
7253 if (!mode_pages || (mode_pages->hdr.length == 0))
7254 return NULL;
7255
7256 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7257 mode_hdr = (struct ipr_mode_page_hdr *)
7258 (mode_pages->data + mode_pages->hdr.block_desc_len);
7259
7260 while (length) {
7261 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7262 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7263 return mode_hdr;
7264 break;
7265 } else {
7266 page_length = (sizeof(struct ipr_mode_page_hdr) +
7267 mode_hdr->page_length);
7268 length -= page_length;
7269 mode_hdr = (struct ipr_mode_page_hdr *)
7270 ((unsigned long)mode_hdr + page_length);
7271 }
7272 }
7273 return NULL;
7274 }
7275
7276 /**
7277 * ipr_check_term_power - Check for term power errors
7278 * @ioa_cfg: ioa config struct
7279 * @mode_pages: IOAFP mode pages buffer
7280 *
7281 * Check the IOAFP's mode page 28 for term power errors
7282 *
7283 * Return value:
7284 * nothing
7285 **/
7286 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7287 struct ipr_mode_pages *mode_pages)
7288 {
7289 int i;
7290 int entry_length;
7291 struct ipr_dev_bus_entry *bus;
7292 struct ipr_mode_page28 *mode_page;
7293
7294 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7295 sizeof(struct ipr_mode_page28));
7296
7297 entry_length = mode_page->entry_length;
7298
7299 bus = mode_page->bus;
7300
7301 for (i = 0; i < mode_page->num_entries; i++) {
7302 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7303 dev_err(&ioa_cfg->pdev->dev,
7304 "Term power is absent on scsi bus %d\n",
7305 bus->res_addr.bus);
7306 }
7307
7308 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7309 }
7310 }
7311
7312 /**
7313 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7314 * @ioa_cfg: ioa config struct
7315 *
7316 * Looks through the config table checking for SES devices. If
7317 * the SES device is in the SES table indicating a maximum SCSI
7318 * bus speed, the speed is limited for the bus.
7319 *
7320 * Return value:
7321 * none
7322 **/
7323 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7324 {
7325 u32 max_xfer_rate;
7326 int i;
7327
7328 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7329 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7330 ioa_cfg->bus_attr[i].bus_width);
7331
7332 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7333 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7334 }
7335 }
7336
7337 /**
7338 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7339 * @ioa_cfg: ioa config struct
7340 * @mode_pages: mode page 28 buffer
7341 *
7342 * Updates mode page 28 based on driver configuration
7343 *
7344 * Return value:
7345 * none
7346 **/
7347 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7348 struct ipr_mode_pages *mode_pages)
7349 {
7350 int i, entry_length;
7351 struct ipr_dev_bus_entry *bus;
7352 struct ipr_bus_attributes *bus_attr;
7353 struct ipr_mode_page28 *mode_page;
7354
7355 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7356 sizeof(struct ipr_mode_page28));
7357
7358 entry_length = mode_page->entry_length;
7359
7360 /* Loop for each device bus entry */
7361 for (i = 0, bus = mode_page->bus;
7362 i < mode_page->num_entries;
7363 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7364 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7365 dev_err(&ioa_cfg->pdev->dev,
7366 "Invalid resource address reported: 0x%08X\n",
7367 IPR_GET_PHYS_LOC(bus->res_addr));
7368 continue;
7369 }
7370
7371 bus_attr = &ioa_cfg->bus_attr[i];
7372 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7373 bus->bus_width = bus_attr->bus_width;
7374 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7375 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7376 if (bus_attr->qas_enabled)
7377 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7378 else
7379 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7380 }
7381 }
7382
7383 /**
7384 * ipr_build_mode_select - Build a mode select command
7385 * @ipr_cmd: ipr command struct
7386 * @res_handle: resource handle to send command to
7387 * @parm: Byte 2 of Mode Sense command
7388 * @dma_addr: DMA buffer address
7389 * @xfer_len: data transfer length
7390 *
7391 * Return value:
7392 * none
7393 **/
7394 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7395 __be32 res_handle, u8 parm,
7396 dma_addr_t dma_addr, u8 xfer_len)
7397 {
7398 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7399
7400 ioarcb->res_handle = res_handle;
7401 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7402 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7403 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7404 ioarcb->cmd_pkt.cdb[1] = parm;
7405 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7406
7407 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7408 }
7409
7410 /**
7411 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7412 * @ipr_cmd: ipr command struct
7413 *
7414 * This function sets up the SCSI bus attributes and sends
7415 * a Mode Select for Page 28 to activate them.
7416 *
7417 * Return value:
7418 * IPR_RC_JOB_RETURN
7419 **/
7420 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7421 {
7422 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7423 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7424 int length;
7425
7426 ENTER;
7427 ipr_scsi_bus_speed_limit(ioa_cfg);
7428 ipr_check_term_power(ioa_cfg, mode_pages);
7429 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7430 length = mode_pages->hdr.length + 1;
7431 mode_pages->hdr.length = 0;
7432
7433 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7434 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7435 length);
7436
7437 ipr_cmd->job_step = ipr_set_supported_devs;
7438 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7439 struct ipr_resource_entry, queue);
7440 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7441
7442 LEAVE;
7443 return IPR_RC_JOB_RETURN;
7444 }
7445
7446 /**
7447 * ipr_build_mode_sense - Builds a mode sense command
7448 * @ipr_cmd: ipr command struct
7449 * @res: resource entry struct
7450 * @parm: Byte 2 of mode sense command
7451 * @dma_addr: DMA address of mode sense buffer
7452 * @xfer_len: Size of DMA buffer
7453 *
7454 * Return value:
7455 * none
7456 **/
7457 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7458 __be32 res_handle,
7459 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7460 {
7461 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7462
7463 ioarcb->res_handle = res_handle;
7464 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7465 ioarcb->cmd_pkt.cdb[2] = parm;
7466 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7467 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7468
7469 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7470 }
7471
7472 /**
7473 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7474 * @ipr_cmd: ipr command struct
7475 *
7476 * This function handles the failure of an IOA bringup command.
7477 *
7478 * Return value:
7479 * IPR_RC_JOB_RETURN
7480 **/
7481 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7482 {
7483 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7484 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7485
7486 dev_err(&ioa_cfg->pdev->dev,
7487 "0x%02X failed with IOASC: 0x%08X\n",
7488 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7489
7490 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7491 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7492 return IPR_RC_JOB_RETURN;
7493 }
7494
7495 /**
7496 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7497 * @ipr_cmd: ipr command struct
7498 *
7499 * This function handles the failure of a Mode Sense to the IOAFP.
7500 * Some adapters do not handle all mode pages.
7501 *
7502 * Return value:
7503 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7504 **/
7505 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7506 {
7507 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7508 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7509
7510 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7511 ipr_cmd->job_step = ipr_set_supported_devs;
7512 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7513 struct ipr_resource_entry, queue);
7514 return IPR_RC_JOB_CONTINUE;
7515 }
7516
7517 return ipr_reset_cmd_failed(ipr_cmd);
7518 }
7519
7520 /**
7521 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7522 * @ipr_cmd: ipr command struct
7523 *
7524 * This function send a Page 28 mode sense to the IOA to
7525 * retrieve SCSI bus attributes.
7526 *
7527 * Return value:
7528 * IPR_RC_JOB_RETURN
7529 **/
7530 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7531 {
7532 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7533
7534 ENTER;
7535 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7536 0x28, ioa_cfg->vpd_cbs_dma +
7537 offsetof(struct ipr_misc_cbs, mode_pages),
7538 sizeof(struct ipr_mode_pages));
7539
7540 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7541 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7542
7543 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7544
7545 LEAVE;
7546 return IPR_RC_JOB_RETURN;
7547 }
7548
7549 /**
7550 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7551 * @ipr_cmd: ipr command struct
7552 *
7553 * This function enables dual IOA RAID support if possible.
7554 *
7555 * Return value:
7556 * IPR_RC_JOB_RETURN
7557 **/
7558 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7559 {
7560 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7561 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7562 struct ipr_mode_page24 *mode_page;
7563 int length;
7564
7565 ENTER;
7566 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7567 sizeof(struct ipr_mode_page24));
7568
7569 if (mode_page)
7570 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7571
7572 length = mode_pages->hdr.length + 1;
7573 mode_pages->hdr.length = 0;
7574
7575 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7576 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7577 length);
7578
7579 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7580 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7581
7582 LEAVE;
7583 return IPR_RC_JOB_RETURN;
7584 }
7585
7586 /**
7587 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7588 * @ipr_cmd: ipr command struct
7589 *
7590 * This function handles the failure of a Mode Sense to the IOAFP.
7591 * Some adapters do not handle all mode pages.
7592 *
7593 * Return value:
7594 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7595 **/
7596 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7597 {
7598 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7599
7600 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7601 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7602 return IPR_RC_JOB_CONTINUE;
7603 }
7604
7605 return ipr_reset_cmd_failed(ipr_cmd);
7606 }
7607
7608 /**
7609 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7610 * @ipr_cmd: ipr command struct
7611 *
7612 * This function send a mode sense to the IOA to retrieve
7613 * the IOA Advanced Function Control mode page.
7614 *
7615 * Return value:
7616 * IPR_RC_JOB_RETURN
7617 **/
7618 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7619 {
7620 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7621
7622 ENTER;
7623 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7624 0x24, ioa_cfg->vpd_cbs_dma +
7625 offsetof(struct ipr_misc_cbs, mode_pages),
7626 sizeof(struct ipr_mode_pages));
7627
7628 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7629 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7630
7631 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7632
7633 LEAVE;
7634 return IPR_RC_JOB_RETURN;
7635 }
7636
7637 /**
7638 * ipr_init_res_table - Initialize the resource table
7639 * @ipr_cmd: ipr command struct
7640 *
7641 * This function looks through the existing resource table, comparing
7642 * it with the config table. This function will take care of old/new
7643 * devices and schedule adding/removing them from the mid-layer
7644 * as appropriate.
7645 *
7646 * Return value:
7647 * IPR_RC_JOB_CONTINUE
7648 **/
7649 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7650 {
7651 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7652 struct ipr_resource_entry *res, *temp;
7653 struct ipr_config_table_entry_wrapper cfgtew;
7654 int entries, found, flag, i;
7655 LIST_HEAD(old_res);
7656
7657 ENTER;
7658 if (ioa_cfg->sis64)
7659 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7660 else
7661 flag = ioa_cfg->u.cfg_table->hdr.flags;
7662
7663 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7664 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7665
7666 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7667 list_move_tail(&res->queue, &old_res);
7668
7669 if (ioa_cfg->sis64)
7670 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7671 else
7672 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7673
7674 for (i = 0; i < entries; i++) {
7675 if (ioa_cfg->sis64)
7676 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7677 else
7678 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7679 found = 0;
7680
7681 list_for_each_entry_safe(res, temp, &old_res, queue) {
7682 if (ipr_is_same_device(res, &cfgtew)) {
7683 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7684 found = 1;
7685 break;
7686 }
7687 }
7688
7689 if (!found) {
7690 if (list_empty(&ioa_cfg->free_res_q)) {
7691 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7692 break;
7693 }
7694
7695 found = 1;
7696 res = list_entry(ioa_cfg->free_res_q.next,
7697 struct ipr_resource_entry, queue);
7698 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7699 ipr_init_res_entry(res, &cfgtew);
7700 res->add_to_ml = 1;
7701 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7702 res->sdev->allow_restart = 1;
7703
7704 if (found)
7705 ipr_update_res_entry(res, &cfgtew);
7706 }
7707
7708 list_for_each_entry_safe(res, temp, &old_res, queue) {
7709 if (res->sdev) {
7710 res->del_from_ml = 1;
7711 res->res_handle = IPR_INVALID_RES_HANDLE;
7712 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7713 }
7714 }
7715
7716 list_for_each_entry_safe(res, temp, &old_res, queue) {
7717 ipr_clear_res_target(res);
7718 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7719 }
7720
7721 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7722 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7723 else
7724 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7725
7726 LEAVE;
7727 return IPR_RC_JOB_CONTINUE;
7728 }
7729
7730 /**
7731 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7732 * @ipr_cmd: ipr command struct
7733 *
7734 * This function sends a Query IOA Configuration command
7735 * to the adapter to retrieve the IOA configuration table.
7736 *
7737 * Return value:
7738 * IPR_RC_JOB_RETURN
7739 **/
7740 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7741 {
7742 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7743 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7744 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7745 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7746
7747 ENTER;
7748 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7749 ioa_cfg->dual_raid = 1;
7750 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7751 ucode_vpd->major_release, ucode_vpd->card_type,
7752 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7753 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7754 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7755
7756 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7757 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7758 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7759 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7760
7761 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7762 IPR_IOADL_FLAGS_READ_LAST);
7763
7764 ipr_cmd->job_step = ipr_init_res_table;
7765
7766 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7767
7768 LEAVE;
7769 return IPR_RC_JOB_RETURN;
7770 }
7771
7772 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7773 {
7774 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7775
7776 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7777 return IPR_RC_JOB_CONTINUE;
7778
7779 return ipr_reset_cmd_failed(ipr_cmd);
7780 }
7781
7782 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7783 __be32 res_handle, u8 sa_code)
7784 {
7785 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7786
7787 ioarcb->res_handle = res_handle;
7788 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7789 ioarcb->cmd_pkt.cdb[1] = sa_code;
7790 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7791 }
7792
7793 /**
7794 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7795 * action
7796 *
7797 * Return value:
7798 * none
7799 **/
7800 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7801 {
7802 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7803 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7804 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7805
7806 ENTER;
7807
7808 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7809
7810 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7811 ipr_build_ioa_service_action(ipr_cmd,
7812 cpu_to_be32(IPR_IOA_RES_HANDLE),
7813 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7814
7815 ioarcb->cmd_pkt.cdb[2] = 0x40;
7816
7817 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7818 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7819 IPR_SET_SUP_DEVICE_TIMEOUT);
7820
7821 LEAVE;
7822 return IPR_RC_JOB_RETURN;
7823 }
7824
7825 LEAVE;
7826 return IPR_RC_JOB_CONTINUE;
7827 }
7828
7829 /**
7830 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7831 * @ipr_cmd: ipr command struct
7832 *
7833 * This utility function sends an inquiry to the adapter.
7834 *
7835 * Return value:
7836 * none
7837 **/
7838 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7839 dma_addr_t dma_addr, u8 xfer_len)
7840 {
7841 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7842
7843 ENTER;
7844 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7845 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7846
7847 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7848 ioarcb->cmd_pkt.cdb[1] = flags;
7849 ioarcb->cmd_pkt.cdb[2] = page;
7850 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7851
7852 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7853
7854 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7855 LEAVE;
7856 }
7857
7858 /**
7859 * ipr_inquiry_page_supported - Is the given inquiry page supported
7860 * @page0: inquiry page 0 buffer
7861 * @page: page code.
7862 *
7863 * This function determines if the specified inquiry page is supported.
7864 *
7865 * Return value:
7866 * 1 if page is supported / 0 if not
7867 **/
7868 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7869 {
7870 int i;
7871
7872 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7873 if (page0->page[i] == page)
7874 return 1;
7875
7876 return 0;
7877 }
7878
7879 /**
7880 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7881 * @ipr_cmd: ipr command struct
7882 *
7883 * This function sends a Page 0xC4 inquiry to the adapter
7884 * to retrieve software VPD information.
7885 *
7886 * Return value:
7887 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7888 **/
7889 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7890 {
7891 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7892 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7893 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7894
7895 ENTER;
7896 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
7897 memset(pageC4, 0, sizeof(*pageC4));
7898
7899 if (ipr_inquiry_page_supported(page0, 0xC4)) {
7900 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7901 (ioa_cfg->vpd_cbs_dma
7902 + offsetof(struct ipr_misc_cbs,
7903 pageC4_data)),
7904 sizeof(struct ipr_inquiry_pageC4));
7905 return IPR_RC_JOB_RETURN;
7906 }
7907
7908 LEAVE;
7909 return IPR_RC_JOB_CONTINUE;
7910 }
7911
7912 /**
7913 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7914 * @ipr_cmd: ipr command struct
7915 *
7916 * This function sends a Page 0xD0 inquiry to the adapter
7917 * to retrieve adapter capabilities.
7918 *
7919 * Return value:
7920 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7921 **/
7922 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7923 {
7924 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7925 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7926 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7927
7928 ENTER;
7929 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7930 memset(cap, 0, sizeof(*cap));
7931
7932 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7933 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7934 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7935 sizeof(struct ipr_inquiry_cap));
7936 return IPR_RC_JOB_RETURN;
7937 }
7938
7939 LEAVE;
7940 return IPR_RC_JOB_CONTINUE;
7941 }
7942
7943 /**
7944 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7945 * @ipr_cmd: ipr command struct
7946 *
7947 * This function sends a Page 3 inquiry to the adapter
7948 * to retrieve software VPD information.
7949 *
7950 * Return value:
7951 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7952 **/
7953 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7954 {
7955 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7956
7957 ENTER;
7958
7959 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7960
7961 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7962 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7963 sizeof(struct ipr_inquiry_page3));
7964
7965 LEAVE;
7966 return IPR_RC_JOB_RETURN;
7967 }
7968
7969 /**
7970 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7971 * @ipr_cmd: ipr command struct
7972 *
7973 * This function sends a Page 0 inquiry to the adapter
7974 * to retrieve supported inquiry pages.
7975 *
7976 * Return value:
7977 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7978 **/
7979 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7980 {
7981 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7982 char type[5];
7983
7984 ENTER;
7985
7986 /* Grab the type out of the VPD and store it away */
7987 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7988 type[4] = '\0';
7989 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7990
7991 if (ipr_invalid_adapter(ioa_cfg)) {
7992 dev_err(&ioa_cfg->pdev->dev,
7993 "Adapter not supported in this hardware configuration.\n");
7994
7995 if (!ipr_testmode) {
7996 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7997 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7998 list_add_tail(&ipr_cmd->queue,
7999 &ioa_cfg->hrrq->hrrq_free_q);
8000 return IPR_RC_JOB_RETURN;
8001 }
8002 }
8003
8004 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
8005
8006 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
8007 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
8008 sizeof(struct ipr_inquiry_page0));
8009
8010 LEAVE;
8011 return IPR_RC_JOB_RETURN;
8012 }
8013
8014 /**
8015 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
8016 * @ipr_cmd: ipr command struct
8017 *
8018 * This function sends a standard inquiry to the adapter.
8019 *
8020 * Return value:
8021 * IPR_RC_JOB_RETURN
8022 **/
8023 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
8024 {
8025 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8026
8027 ENTER;
8028 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
8029
8030 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
8031 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
8032 sizeof(struct ipr_ioa_vpd));
8033
8034 LEAVE;
8035 return IPR_RC_JOB_RETURN;
8036 }
8037
8038 /**
8039 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
8040 * @ipr_cmd: ipr command struct
8041 *
8042 * This function send an Identify Host Request Response Queue
8043 * command to establish the HRRQ with the adapter.
8044 *
8045 * Return value:
8046 * IPR_RC_JOB_RETURN
8047 **/
8048 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
8049 {
8050 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8051 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
8052 struct ipr_hrr_queue *hrrq;
8053
8054 ENTER;
8055 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
8056 if (ioa_cfg->identify_hrrq_index == 0)
8057 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
8058
8059 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
8060 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
8061
8062 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
8063 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8064
8065 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8066 if (ioa_cfg->sis64)
8067 ioarcb->cmd_pkt.cdb[1] = 0x1;
8068
8069 if (ioa_cfg->nvectors == 1)
8070 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
8071 else
8072 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
8073
8074 ioarcb->cmd_pkt.cdb[2] =
8075 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
8076 ioarcb->cmd_pkt.cdb[3] =
8077 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
8078 ioarcb->cmd_pkt.cdb[4] =
8079 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
8080 ioarcb->cmd_pkt.cdb[5] =
8081 ((u64) hrrq->host_rrq_dma) & 0xff;
8082 ioarcb->cmd_pkt.cdb[7] =
8083 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
8084 ioarcb->cmd_pkt.cdb[8] =
8085 (sizeof(u32) * hrrq->size) & 0xff;
8086
8087 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8088 ioarcb->cmd_pkt.cdb[9] =
8089 ioa_cfg->identify_hrrq_index;
8090
8091 if (ioa_cfg->sis64) {
8092 ioarcb->cmd_pkt.cdb[10] =
8093 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
8094 ioarcb->cmd_pkt.cdb[11] =
8095 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8096 ioarcb->cmd_pkt.cdb[12] =
8097 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8098 ioarcb->cmd_pkt.cdb[13] =
8099 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8100 }
8101
8102 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8103 ioarcb->cmd_pkt.cdb[14] =
8104 ioa_cfg->identify_hrrq_index;
8105
8106 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8107 IPR_INTERNAL_TIMEOUT);
8108
8109 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8110 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8111
8112 LEAVE;
8113 return IPR_RC_JOB_RETURN;
8114 }
8115
8116 LEAVE;
8117 return IPR_RC_JOB_CONTINUE;
8118 }
8119
8120 /**
8121 * ipr_reset_timer_done - Adapter reset timer function
8122 * @ipr_cmd: ipr command struct
8123 *
8124 * Description: This function is used in adapter reset processing
8125 * for timing events. If the reset_cmd pointer in the IOA
8126 * config struct is not this adapter's we are doing nested
8127 * resets and fail_all_ops will take care of freeing the
8128 * command block.
8129 *
8130 * Return value:
8131 * none
8132 **/
8133 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
8134 {
8135 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8136 unsigned long lock_flags = 0;
8137
8138 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8139
8140 if (ioa_cfg->reset_cmd == ipr_cmd) {
8141 list_del(&ipr_cmd->queue);
8142 ipr_cmd->done(ipr_cmd);
8143 }
8144
8145 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8146 }
8147
8148 /**
8149 * ipr_reset_start_timer - Start a timer for adapter reset job
8150 * @ipr_cmd: ipr command struct
8151 * @timeout: timeout value
8152 *
8153 * Description: This function is used in adapter reset processing
8154 * for timing events. If the reset_cmd pointer in the IOA
8155 * config struct is not this adapter's we are doing nested
8156 * resets and fail_all_ops will take care of freeing the
8157 * command block.
8158 *
8159 * Return value:
8160 * none
8161 **/
8162 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8163 unsigned long timeout)
8164 {
8165
8166 ENTER;
8167 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8168 ipr_cmd->done = ipr_reset_ioa_job;
8169
8170 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8171 ipr_cmd->timer.expires = jiffies + timeout;
8172 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8173 add_timer(&ipr_cmd->timer);
8174 }
8175
8176 /**
8177 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8178 * @ioa_cfg: ioa cfg struct
8179 *
8180 * Return value:
8181 * nothing
8182 **/
8183 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8184 {
8185 struct ipr_hrr_queue *hrrq;
8186
8187 for_each_hrrq(hrrq, ioa_cfg) {
8188 spin_lock(&hrrq->_lock);
8189 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8190
8191 /* Initialize Host RRQ pointers */
8192 hrrq->hrrq_start = hrrq->host_rrq;
8193 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8194 hrrq->hrrq_curr = hrrq->hrrq_start;
8195 hrrq->toggle_bit = 1;
8196 spin_unlock(&hrrq->_lock);
8197 }
8198 wmb();
8199
8200 ioa_cfg->identify_hrrq_index = 0;
8201 if (ioa_cfg->hrrq_num == 1)
8202 atomic_set(&ioa_cfg->hrrq_index, 0);
8203 else
8204 atomic_set(&ioa_cfg->hrrq_index, 1);
8205
8206 /* Zero out config table */
8207 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8208 }
8209
8210 /**
8211 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8212 * @ipr_cmd: ipr command struct
8213 *
8214 * Return value:
8215 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8216 **/
8217 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8218 {
8219 unsigned long stage, stage_time;
8220 u32 feedback;
8221 volatile u32 int_reg;
8222 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8223 u64 maskval = 0;
8224
8225 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8226 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8227 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8228
8229 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8230
8231 /* sanity check the stage_time value */
8232 if (stage_time == 0)
8233 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8234 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8235 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8236 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8237 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8238
8239 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8240 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8241 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8242 stage_time = ioa_cfg->transop_timeout;
8243 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8244 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8245 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8246 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8247 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8248 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8249 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8250 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8251 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8252 return IPR_RC_JOB_CONTINUE;
8253 }
8254 }
8255
8256 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8257 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8258 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8259 ipr_cmd->done = ipr_reset_ioa_job;
8260 add_timer(&ipr_cmd->timer);
8261
8262 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8263
8264 return IPR_RC_JOB_RETURN;
8265 }
8266
8267 /**
8268 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8269 * @ipr_cmd: ipr command struct
8270 *
8271 * This function reinitializes some control blocks and
8272 * enables destructive diagnostics on the adapter.
8273 *
8274 * Return value:
8275 * IPR_RC_JOB_RETURN
8276 **/
8277 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8278 {
8279 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8280 volatile u32 int_reg;
8281 volatile u64 maskval;
8282 int i;
8283
8284 ENTER;
8285 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8286 ipr_init_ioa_mem(ioa_cfg);
8287
8288 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8289 spin_lock(&ioa_cfg->hrrq[i]._lock);
8290 ioa_cfg->hrrq[i].allow_interrupts = 1;
8291 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8292 }
8293 wmb();
8294 if (ioa_cfg->sis64) {
8295 /* Set the adapter to the correct endian mode. */
8296 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8297 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8298 }
8299
8300 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8301
8302 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8303 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8304 ioa_cfg->regs.clr_interrupt_mask_reg32);
8305 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8306 return IPR_RC_JOB_CONTINUE;
8307 }
8308
8309 /* Enable destructive diagnostics on IOA */
8310 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8311
8312 if (ioa_cfg->sis64) {
8313 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8314 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8315 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8316 } else
8317 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8318
8319 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8320
8321 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8322
8323 if (ioa_cfg->sis64) {
8324 ipr_cmd->job_step = ipr_reset_next_stage;
8325 return IPR_RC_JOB_CONTINUE;
8326 }
8327
8328 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8329 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8330 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8331 ipr_cmd->done = ipr_reset_ioa_job;
8332 add_timer(&ipr_cmd->timer);
8333 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8334
8335 LEAVE;
8336 return IPR_RC_JOB_RETURN;
8337 }
8338
8339 /**
8340 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8341 * @ipr_cmd: ipr command struct
8342 *
8343 * This function is invoked when an adapter dump has run out
8344 * of processing time.
8345 *
8346 * Return value:
8347 * IPR_RC_JOB_CONTINUE
8348 **/
8349 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8350 {
8351 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8352
8353 if (ioa_cfg->sdt_state == GET_DUMP)
8354 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8355 else if (ioa_cfg->sdt_state == READ_DUMP)
8356 ioa_cfg->sdt_state = ABORT_DUMP;
8357
8358 ioa_cfg->dump_timeout = 1;
8359 ipr_cmd->job_step = ipr_reset_alert;
8360
8361 return IPR_RC_JOB_CONTINUE;
8362 }
8363
8364 /**
8365 * ipr_unit_check_no_data - Log a unit check/no data error log
8366 * @ioa_cfg: ioa config struct
8367 *
8368 * Logs an error indicating the adapter unit checked, but for some
8369 * reason, we were unable to fetch the unit check buffer.
8370 *
8371 * Return value:
8372 * nothing
8373 **/
8374 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8375 {
8376 ioa_cfg->errors_logged++;
8377 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8378 }
8379
8380 /**
8381 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8382 * @ioa_cfg: ioa config struct
8383 *
8384 * Fetches the unit check buffer from the adapter by clocking the data
8385 * through the mailbox register.
8386 *
8387 * Return value:
8388 * nothing
8389 **/
8390 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8391 {
8392 unsigned long mailbox;
8393 struct ipr_hostrcb *hostrcb;
8394 struct ipr_uc_sdt sdt;
8395 int rc, length;
8396 u32 ioasc;
8397
8398 mailbox = readl(ioa_cfg->ioa_mailbox);
8399
8400 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8401 ipr_unit_check_no_data(ioa_cfg);
8402 return;
8403 }
8404
8405 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8406 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8407 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8408
8409 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8410 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8411 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8412 ipr_unit_check_no_data(ioa_cfg);
8413 return;
8414 }
8415
8416 /* Find length of the first sdt entry (UC buffer) */
8417 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8418 length = be32_to_cpu(sdt.entry[0].end_token);
8419 else
8420 length = (be32_to_cpu(sdt.entry[0].end_token) -
8421 be32_to_cpu(sdt.entry[0].start_token)) &
8422 IPR_FMT2_MBX_ADDR_MASK;
8423
8424 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8425 struct ipr_hostrcb, queue);
8426 list_del_init(&hostrcb->queue);
8427 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8428
8429 rc = ipr_get_ldump_data_section(ioa_cfg,
8430 be32_to_cpu(sdt.entry[0].start_token),
8431 (__be32 *)&hostrcb->hcam,
8432 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8433
8434 if (!rc) {
8435 ipr_handle_log_data(ioa_cfg, hostrcb);
8436 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8437 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8438 ioa_cfg->sdt_state == GET_DUMP)
8439 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8440 } else
8441 ipr_unit_check_no_data(ioa_cfg);
8442
8443 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8444 }
8445
8446 /**
8447 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8448 * @ipr_cmd: ipr command struct
8449 *
8450 * Description: This function will call to get the unit check buffer.
8451 *
8452 * Return value:
8453 * IPR_RC_JOB_RETURN
8454 **/
8455 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8456 {
8457 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8458
8459 ENTER;
8460 ioa_cfg->ioa_unit_checked = 0;
8461 ipr_get_unit_check_buffer(ioa_cfg);
8462 ipr_cmd->job_step = ipr_reset_alert;
8463 ipr_reset_start_timer(ipr_cmd, 0);
8464
8465 LEAVE;
8466 return IPR_RC_JOB_RETURN;
8467 }
8468
8469 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8470 {
8471 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8472
8473 ENTER;
8474
8475 if (ioa_cfg->sdt_state != GET_DUMP)
8476 return IPR_RC_JOB_RETURN;
8477
8478 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8479 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8480 IPR_PCII_MAILBOX_STABLE)) {
8481
8482 if (!ipr_cmd->u.time_left)
8483 dev_err(&ioa_cfg->pdev->dev,
8484 "Timed out waiting for Mailbox register.\n");
8485
8486 ioa_cfg->sdt_state = READ_DUMP;
8487 ioa_cfg->dump_timeout = 0;
8488 if (ioa_cfg->sis64)
8489 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8490 else
8491 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8492 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8493 schedule_work(&ioa_cfg->work_q);
8494
8495 } else {
8496 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8497 ipr_reset_start_timer(ipr_cmd,
8498 IPR_CHECK_FOR_RESET_TIMEOUT);
8499 }
8500
8501 LEAVE;
8502 return IPR_RC_JOB_RETURN;
8503 }
8504
8505 /**
8506 * ipr_reset_restore_cfg_space - Restore PCI config space.
8507 * @ipr_cmd: ipr command struct
8508 *
8509 * Description: This function restores the saved PCI config space of
8510 * the adapter, fails all outstanding ops back to the callers, and
8511 * fetches the dump/unit check if applicable to this reset.
8512 *
8513 * Return value:
8514 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8515 **/
8516 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8517 {
8518 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8519 u32 int_reg;
8520
8521 ENTER;
8522 ioa_cfg->pdev->state_saved = true;
8523 pci_restore_state(ioa_cfg->pdev);
8524
8525 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8526 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8527 return IPR_RC_JOB_CONTINUE;
8528 }
8529
8530 ipr_fail_all_ops(ioa_cfg);
8531
8532 if (ioa_cfg->sis64) {
8533 /* Set the adapter to the correct endian mode. */
8534 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8535 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8536 }
8537
8538 if (ioa_cfg->ioa_unit_checked) {
8539 if (ioa_cfg->sis64) {
8540 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8541 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8542 return IPR_RC_JOB_RETURN;
8543 } else {
8544 ioa_cfg->ioa_unit_checked = 0;
8545 ipr_get_unit_check_buffer(ioa_cfg);
8546 ipr_cmd->job_step = ipr_reset_alert;
8547 ipr_reset_start_timer(ipr_cmd, 0);
8548 return IPR_RC_JOB_RETURN;
8549 }
8550 }
8551
8552 if (ioa_cfg->in_ioa_bringdown) {
8553 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8554 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8555 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8556 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8557 } else {
8558 ipr_cmd->job_step = ipr_reset_enable_ioa;
8559 }
8560
8561 LEAVE;
8562 return IPR_RC_JOB_CONTINUE;
8563 }
8564
8565 /**
8566 * ipr_reset_bist_done - BIST has completed on the adapter.
8567 * @ipr_cmd: ipr command struct
8568 *
8569 * Description: Unblock config space and resume the reset process.
8570 *
8571 * Return value:
8572 * IPR_RC_JOB_CONTINUE
8573 **/
8574 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8575 {
8576 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8577
8578 ENTER;
8579 if (ioa_cfg->cfg_locked)
8580 pci_cfg_access_unlock(ioa_cfg->pdev);
8581 ioa_cfg->cfg_locked = 0;
8582 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8583 LEAVE;
8584 return IPR_RC_JOB_CONTINUE;
8585 }
8586
8587 /**
8588 * ipr_reset_start_bist - Run BIST on the adapter.
8589 * @ipr_cmd: ipr command struct
8590 *
8591 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8592 *
8593 * Return value:
8594 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8595 **/
8596 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8597 {
8598 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8599 int rc = PCIBIOS_SUCCESSFUL;
8600
8601 ENTER;
8602 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8603 writel(IPR_UPROCI_SIS64_START_BIST,
8604 ioa_cfg->regs.set_uproc_interrupt_reg32);
8605 else
8606 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8607
8608 if (rc == PCIBIOS_SUCCESSFUL) {
8609 ipr_cmd->job_step = ipr_reset_bist_done;
8610 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8611 rc = IPR_RC_JOB_RETURN;
8612 } else {
8613 if (ioa_cfg->cfg_locked)
8614 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8615 ioa_cfg->cfg_locked = 0;
8616 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8617 rc = IPR_RC_JOB_CONTINUE;
8618 }
8619
8620 LEAVE;
8621 return rc;
8622 }
8623
8624 /**
8625 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8626 * @ipr_cmd: ipr command struct
8627 *
8628 * Description: This clears PCI reset to the adapter and delays two seconds.
8629 *
8630 * Return value:
8631 * IPR_RC_JOB_RETURN
8632 **/
8633 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8634 {
8635 ENTER;
8636 ipr_cmd->job_step = ipr_reset_bist_done;
8637 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8638 LEAVE;
8639 return IPR_RC_JOB_RETURN;
8640 }
8641
8642 /**
8643 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8644 * @work: work struct
8645 *
8646 * Description: This pulses warm reset to a slot.
8647 *
8648 **/
8649 static void ipr_reset_reset_work(struct work_struct *work)
8650 {
8651 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8652 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8653 struct pci_dev *pdev = ioa_cfg->pdev;
8654 unsigned long lock_flags = 0;
8655
8656 ENTER;
8657 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8658 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8659 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8660
8661 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8662 if (ioa_cfg->reset_cmd == ipr_cmd)
8663 ipr_reset_ioa_job(ipr_cmd);
8664 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8665 LEAVE;
8666 }
8667
8668 /**
8669 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8670 * @ipr_cmd: ipr command struct
8671 *
8672 * Description: This asserts PCI reset to the adapter.
8673 *
8674 * Return value:
8675 * IPR_RC_JOB_RETURN
8676 **/
8677 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8678 {
8679 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8680
8681 ENTER;
8682 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8683 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8684 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8685 LEAVE;
8686 return IPR_RC_JOB_RETURN;
8687 }
8688
8689 /**
8690 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8691 * @ipr_cmd: ipr command struct
8692 *
8693 * Description: This attempts to block config access to the IOA.
8694 *
8695 * Return value:
8696 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8697 **/
8698 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8699 {
8700 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8701 int rc = IPR_RC_JOB_CONTINUE;
8702
8703 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8704 ioa_cfg->cfg_locked = 1;
8705 ipr_cmd->job_step = ioa_cfg->reset;
8706 } else {
8707 if (ipr_cmd->u.time_left) {
8708 rc = IPR_RC_JOB_RETURN;
8709 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8710 ipr_reset_start_timer(ipr_cmd,
8711 IPR_CHECK_FOR_RESET_TIMEOUT);
8712 } else {
8713 ipr_cmd->job_step = ioa_cfg->reset;
8714 dev_err(&ioa_cfg->pdev->dev,
8715 "Timed out waiting to lock config access. Resetting anyway.\n");
8716 }
8717 }
8718
8719 return rc;
8720 }
8721
8722 /**
8723 * ipr_reset_block_config_access - Block config access to the IOA
8724 * @ipr_cmd: ipr command struct
8725 *
8726 * Description: This attempts to block config access to the IOA
8727 *
8728 * Return value:
8729 * IPR_RC_JOB_CONTINUE
8730 **/
8731 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8732 {
8733 ipr_cmd->ioa_cfg->cfg_locked = 0;
8734 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8735 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8736 return IPR_RC_JOB_CONTINUE;
8737 }
8738
8739 /**
8740 * ipr_reset_allowed - Query whether or not IOA can be reset
8741 * @ioa_cfg: ioa config struct
8742 *
8743 * Return value:
8744 * 0 if reset not allowed / non-zero if reset is allowed
8745 **/
8746 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8747 {
8748 volatile u32 temp_reg;
8749
8750 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8751 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8752 }
8753
8754 /**
8755 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8756 * @ipr_cmd: ipr command struct
8757 *
8758 * Description: This function waits for adapter permission to run BIST,
8759 * then runs BIST. If the adapter does not give permission after a
8760 * reasonable time, we will reset the adapter anyway. The impact of
8761 * resetting the adapter without warning the adapter is the risk of
8762 * losing the persistent error log on the adapter. If the adapter is
8763 * reset while it is writing to the flash on the adapter, the flash
8764 * segment will have bad ECC and be zeroed.
8765 *
8766 * Return value:
8767 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8768 **/
8769 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8770 {
8771 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8772 int rc = IPR_RC_JOB_RETURN;
8773
8774 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8775 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8776 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8777 } else {
8778 ipr_cmd->job_step = ipr_reset_block_config_access;
8779 rc = IPR_RC_JOB_CONTINUE;
8780 }
8781
8782 return rc;
8783 }
8784
8785 /**
8786 * ipr_reset_alert - Alert the adapter of a pending reset
8787 * @ipr_cmd: ipr command struct
8788 *
8789 * Description: This function alerts the adapter that it will be reset.
8790 * If memory space is not currently enabled, proceed directly
8791 * to running BIST on the adapter. The timer must always be started
8792 * so we guarantee we do not run BIST from ipr_isr.
8793 *
8794 * Return value:
8795 * IPR_RC_JOB_RETURN
8796 **/
8797 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8798 {
8799 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8800 u16 cmd_reg;
8801 int rc;
8802
8803 ENTER;
8804 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8805
8806 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8807 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8808 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8809 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8810 } else {
8811 ipr_cmd->job_step = ipr_reset_block_config_access;
8812 }
8813
8814 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8815 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8816
8817 LEAVE;
8818 return IPR_RC_JOB_RETURN;
8819 }
8820
8821 /**
8822 * ipr_reset_quiesce_done - Complete IOA disconnect
8823 * @ipr_cmd: ipr command struct
8824 *
8825 * Description: Freeze the adapter to complete quiesce processing
8826 *
8827 * Return value:
8828 * IPR_RC_JOB_CONTINUE
8829 **/
8830 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8831 {
8832 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8833
8834 ENTER;
8835 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8836 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8837 LEAVE;
8838 return IPR_RC_JOB_CONTINUE;
8839 }
8840
8841 /**
8842 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8843 * @ipr_cmd: ipr command struct
8844 *
8845 * Description: Ensure nothing is outstanding to the IOA and
8846 * proceed with IOA disconnect. Otherwise reset the IOA.
8847 *
8848 * Return value:
8849 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8850 **/
8851 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8852 {
8853 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8854 struct ipr_cmnd *loop_cmd;
8855 struct ipr_hrr_queue *hrrq;
8856 int rc = IPR_RC_JOB_CONTINUE;
8857 int count = 0;
8858
8859 ENTER;
8860 ipr_cmd->job_step = ipr_reset_quiesce_done;
8861
8862 for_each_hrrq(hrrq, ioa_cfg) {
8863 spin_lock(&hrrq->_lock);
8864 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8865 count++;
8866 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8867 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8868 rc = IPR_RC_JOB_RETURN;
8869 break;
8870 }
8871 spin_unlock(&hrrq->_lock);
8872
8873 if (count)
8874 break;
8875 }
8876
8877 LEAVE;
8878 return rc;
8879 }
8880
8881 /**
8882 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8883 * @ipr_cmd: ipr command struct
8884 *
8885 * Description: Cancel any oustanding HCAMs to the IOA.
8886 *
8887 * Return value:
8888 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8889 **/
8890 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8891 {
8892 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8893 int rc = IPR_RC_JOB_CONTINUE;
8894 struct ipr_cmd_pkt *cmd_pkt;
8895 struct ipr_cmnd *hcam_cmd;
8896 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8897
8898 ENTER;
8899 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8900
8901 if (!hrrq->ioa_is_dead) {
8902 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8903 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8904 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8905 continue;
8906
8907 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8908 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8909 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8910 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8911 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8912 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8913 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8914 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8915 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8916 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8917 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8918 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8919 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8920 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8921
8922 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8923 IPR_CANCEL_TIMEOUT);
8924
8925 rc = IPR_RC_JOB_RETURN;
8926 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8927 break;
8928 }
8929 }
8930 } else
8931 ipr_cmd->job_step = ipr_reset_alert;
8932
8933 LEAVE;
8934 return rc;
8935 }
8936
8937 /**
8938 * ipr_reset_ucode_download_done - Microcode download completion
8939 * @ipr_cmd: ipr command struct
8940 *
8941 * Description: This function unmaps the microcode download buffer.
8942 *
8943 * Return value:
8944 * IPR_RC_JOB_CONTINUE
8945 **/
8946 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8947 {
8948 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8949 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8950
8951 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8952 sglist->num_sg, DMA_TO_DEVICE);
8953
8954 ipr_cmd->job_step = ipr_reset_alert;
8955 return IPR_RC_JOB_CONTINUE;
8956 }
8957
8958 /**
8959 * ipr_reset_ucode_download - Download microcode to the adapter
8960 * @ipr_cmd: ipr command struct
8961 *
8962 * Description: This function checks to see if it there is microcode
8963 * to download to the adapter. If there is, a download is performed.
8964 *
8965 * Return value:
8966 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8967 **/
8968 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8969 {
8970 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8971 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8972
8973 ENTER;
8974 ipr_cmd->job_step = ipr_reset_alert;
8975
8976 if (!sglist)
8977 return IPR_RC_JOB_CONTINUE;
8978
8979 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8980 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8981 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8982 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8983 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8984 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8985 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8986
8987 if (ioa_cfg->sis64)
8988 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8989 else
8990 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8991 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8992
8993 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8994 IPR_WRITE_BUFFER_TIMEOUT);
8995
8996 LEAVE;
8997 return IPR_RC_JOB_RETURN;
8998 }
8999
9000 /**
9001 * ipr_reset_shutdown_ioa - Shutdown the adapter
9002 * @ipr_cmd: ipr command struct
9003 *
9004 * Description: This function issues an adapter shutdown of the
9005 * specified type to the specified adapter as part of the
9006 * adapter reset job.
9007 *
9008 * Return value:
9009 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9010 **/
9011 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
9012 {
9013 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9014 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
9015 unsigned long timeout;
9016 int rc = IPR_RC_JOB_CONTINUE;
9017
9018 ENTER;
9019 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
9020 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9021 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
9022 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
9023 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9024 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9025 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9026 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
9027
9028 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
9029 timeout = IPR_SHUTDOWN_TIMEOUT;
9030 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
9031 timeout = IPR_INTERNAL_TIMEOUT;
9032 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
9033 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
9034 else
9035 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
9036
9037 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
9038
9039 rc = IPR_RC_JOB_RETURN;
9040 ipr_cmd->job_step = ipr_reset_ucode_download;
9041 } else
9042 ipr_cmd->job_step = ipr_reset_alert;
9043
9044 LEAVE;
9045 return rc;
9046 }
9047
9048 /**
9049 * ipr_reset_ioa_job - Adapter reset job
9050 * @ipr_cmd: ipr command struct
9051 *
9052 * Description: This function is the job router for the adapter reset job.
9053 *
9054 * Return value:
9055 * none
9056 **/
9057 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
9058 {
9059 u32 rc, ioasc;
9060 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9061
9062 do {
9063 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
9064
9065 if (ioa_cfg->reset_cmd != ipr_cmd) {
9066 /*
9067 * We are doing nested adapter resets and this is
9068 * not the current reset job.
9069 */
9070 list_add_tail(&ipr_cmd->queue,
9071 &ipr_cmd->hrrq->hrrq_free_q);
9072 return;
9073 }
9074
9075 if (IPR_IOASC_SENSE_KEY(ioasc)) {
9076 rc = ipr_cmd->job_step_failed(ipr_cmd);
9077 if (rc == IPR_RC_JOB_RETURN)
9078 return;
9079 }
9080
9081 ipr_reinit_ipr_cmnd(ipr_cmd);
9082 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
9083 rc = ipr_cmd->job_step(ipr_cmd);
9084 } while (rc == IPR_RC_JOB_CONTINUE);
9085 }
9086
9087 /**
9088 * _ipr_initiate_ioa_reset - Initiate an adapter reset
9089 * @ioa_cfg: ioa config struct
9090 * @job_step: first job step of reset job
9091 * @shutdown_type: shutdown type
9092 *
9093 * Description: This function will initiate the reset of the given adapter
9094 * starting at the selected job step.
9095 * If the caller needs to wait on the completion of the reset,
9096 * the caller must sleep on the reset_wait_q.
9097 *
9098 * Return value:
9099 * none
9100 **/
9101 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9102 int (*job_step) (struct ipr_cmnd *),
9103 enum ipr_shutdown_type shutdown_type)
9104 {
9105 struct ipr_cmnd *ipr_cmd;
9106 int i;
9107
9108 ioa_cfg->in_reset_reload = 1;
9109 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9110 spin_lock(&ioa_cfg->hrrq[i]._lock);
9111 ioa_cfg->hrrq[i].allow_cmds = 0;
9112 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9113 }
9114 wmb();
9115 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
9116 scsi_block_requests(ioa_cfg->host);
9117
9118 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9119 ioa_cfg->reset_cmd = ipr_cmd;
9120 ipr_cmd->job_step = job_step;
9121 ipr_cmd->u.shutdown_type = shutdown_type;
9122
9123 ipr_reset_ioa_job(ipr_cmd);
9124 }
9125
9126 /**
9127 * ipr_initiate_ioa_reset - Initiate an adapter reset
9128 * @ioa_cfg: ioa config struct
9129 * @shutdown_type: shutdown type
9130 *
9131 * Description: This function will initiate the reset of the given adapter.
9132 * If the caller needs to wait on the completion of the reset,
9133 * the caller must sleep on the reset_wait_q.
9134 *
9135 * Return value:
9136 * none
9137 **/
9138 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9139 enum ipr_shutdown_type shutdown_type)
9140 {
9141 int i;
9142
9143 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9144 return;
9145
9146 if (ioa_cfg->in_reset_reload) {
9147 if (ioa_cfg->sdt_state == GET_DUMP)
9148 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9149 else if (ioa_cfg->sdt_state == READ_DUMP)
9150 ioa_cfg->sdt_state = ABORT_DUMP;
9151 }
9152
9153 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9154 dev_err(&ioa_cfg->pdev->dev,
9155 "IOA taken offline - error recovery failed\n");
9156
9157 ioa_cfg->reset_retries = 0;
9158 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9159 spin_lock(&ioa_cfg->hrrq[i]._lock);
9160 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9161 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9162 }
9163 wmb();
9164
9165 if (ioa_cfg->in_ioa_bringdown) {
9166 ioa_cfg->reset_cmd = NULL;
9167 ioa_cfg->in_reset_reload = 0;
9168 ipr_fail_all_ops(ioa_cfg);
9169 wake_up_all(&ioa_cfg->reset_wait_q);
9170
9171 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9172 spin_unlock_irq(ioa_cfg->host->host_lock);
9173 scsi_unblock_requests(ioa_cfg->host);
9174 spin_lock_irq(ioa_cfg->host->host_lock);
9175 }
9176 return;
9177 } else {
9178 ioa_cfg->in_ioa_bringdown = 1;
9179 shutdown_type = IPR_SHUTDOWN_NONE;
9180 }
9181 }
9182
9183 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9184 shutdown_type);
9185 }
9186
9187 /**
9188 * ipr_reset_freeze - Hold off all I/O activity
9189 * @ipr_cmd: ipr command struct
9190 *
9191 * Description: If the PCI slot is frozen, hold off all I/O
9192 * activity; then, as soon as the slot is available again,
9193 * initiate an adapter reset.
9194 */
9195 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9196 {
9197 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9198 int i;
9199
9200 /* Disallow new interrupts, avoid loop */
9201 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9202 spin_lock(&ioa_cfg->hrrq[i]._lock);
9203 ioa_cfg->hrrq[i].allow_interrupts = 0;
9204 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9205 }
9206 wmb();
9207 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9208 ipr_cmd->done = ipr_reset_ioa_job;
9209 return IPR_RC_JOB_RETURN;
9210 }
9211
9212 /**
9213 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9214 * @pdev: PCI device struct
9215 *
9216 * Description: This routine is called to tell us that the MMIO
9217 * access to the IOA has been restored
9218 */
9219 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9220 {
9221 unsigned long flags = 0;
9222 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9223
9224 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9225 if (!ioa_cfg->probe_done)
9226 pci_save_state(pdev);
9227 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9228 return PCI_ERS_RESULT_NEED_RESET;
9229 }
9230
9231 /**
9232 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9233 * @pdev: PCI device struct
9234 *
9235 * Description: This routine is called to tell us that the PCI bus
9236 * is down. Can't do anything here, except put the device driver
9237 * into a holding pattern, waiting for the PCI bus to come back.
9238 */
9239 static void ipr_pci_frozen(struct pci_dev *pdev)
9240 {
9241 unsigned long flags = 0;
9242 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9243
9244 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9245 if (ioa_cfg->probe_done)
9246 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9247 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9248 }
9249
9250 /**
9251 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9252 * @pdev: PCI device struct
9253 *
9254 * Description: This routine is called by the pci error recovery
9255 * code after the PCI slot has been reset, just before we
9256 * should resume normal operations.
9257 */
9258 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9259 {
9260 unsigned long flags = 0;
9261 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9262
9263 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9264 if (ioa_cfg->probe_done) {
9265 if (ioa_cfg->needs_warm_reset)
9266 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9267 else
9268 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9269 IPR_SHUTDOWN_NONE);
9270 } else
9271 wake_up_all(&ioa_cfg->eeh_wait_q);
9272 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9273 return PCI_ERS_RESULT_RECOVERED;
9274 }
9275
9276 /**
9277 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9278 * @pdev: PCI device struct
9279 *
9280 * Description: This routine is called when the PCI bus has
9281 * permanently failed.
9282 */
9283 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9284 {
9285 unsigned long flags = 0;
9286 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9287 int i;
9288
9289 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9290 if (ioa_cfg->probe_done) {
9291 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9292 ioa_cfg->sdt_state = ABORT_DUMP;
9293 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9294 ioa_cfg->in_ioa_bringdown = 1;
9295 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9296 spin_lock(&ioa_cfg->hrrq[i]._lock);
9297 ioa_cfg->hrrq[i].allow_cmds = 0;
9298 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9299 }
9300 wmb();
9301 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9302 } else
9303 wake_up_all(&ioa_cfg->eeh_wait_q);
9304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9305 }
9306
9307 /**
9308 * ipr_pci_error_detected - Called when a PCI error is detected.
9309 * @pdev: PCI device struct
9310 * @state: PCI channel state
9311 *
9312 * Description: Called when a PCI error is detected.
9313 *
9314 * Return value:
9315 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9316 */
9317 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9318 pci_channel_state_t state)
9319 {
9320 switch (state) {
9321 case pci_channel_io_frozen:
9322 ipr_pci_frozen(pdev);
9323 return PCI_ERS_RESULT_CAN_RECOVER;
9324 case pci_channel_io_perm_failure:
9325 ipr_pci_perm_failure(pdev);
9326 return PCI_ERS_RESULT_DISCONNECT;
9327 break;
9328 default:
9329 break;
9330 }
9331 return PCI_ERS_RESULT_NEED_RESET;
9332 }
9333
9334 /**
9335 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9336 * @ioa_cfg: ioa cfg struct
9337 *
9338 * Description: This is the second phase of adapter intialization
9339 * This function takes care of initilizing the adapter to the point
9340 * where it can accept new commands.
9341
9342 * Return value:
9343 * 0 on success / -EIO on failure
9344 **/
9345 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9346 {
9347 int rc = 0;
9348 unsigned long host_lock_flags = 0;
9349
9350 ENTER;
9351 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9352 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9353 ioa_cfg->probe_done = 1;
9354 if (ioa_cfg->needs_hard_reset) {
9355 ioa_cfg->needs_hard_reset = 0;
9356 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9357 } else
9358 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9359 IPR_SHUTDOWN_NONE);
9360 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9361
9362 LEAVE;
9363 return rc;
9364 }
9365
9366 /**
9367 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9368 * @ioa_cfg: ioa config struct
9369 *
9370 * Return value:
9371 * none
9372 **/
9373 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9374 {
9375 int i;
9376
9377 if (ioa_cfg->ipr_cmnd_list) {
9378 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9379 if (ioa_cfg->ipr_cmnd_list[i])
9380 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9381 ioa_cfg->ipr_cmnd_list[i],
9382 ioa_cfg->ipr_cmnd_list_dma[i]);
9383
9384 ioa_cfg->ipr_cmnd_list[i] = NULL;
9385 }
9386 }
9387
9388 if (ioa_cfg->ipr_cmd_pool)
9389 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9390
9391 kfree(ioa_cfg->ipr_cmnd_list);
9392 kfree(ioa_cfg->ipr_cmnd_list_dma);
9393 ioa_cfg->ipr_cmnd_list = NULL;
9394 ioa_cfg->ipr_cmnd_list_dma = NULL;
9395 ioa_cfg->ipr_cmd_pool = NULL;
9396 }
9397
9398 /**
9399 * ipr_free_mem - Frees memory allocated for an adapter
9400 * @ioa_cfg: ioa cfg struct
9401 *
9402 * Return value:
9403 * nothing
9404 **/
9405 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9406 {
9407 int i;
9408
9409 kfree(ioa_cfg->res_entries);
9410 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9411 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9412 ipr_free_cmd_blks(ioa_cfg);
9413
9414 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9415 dma_free_coherent(&ioa_cfg->pdev->dev,
9416 sizeof(u32) * ioa_cfg->hrrq[i].size,
9417 ioa_cfg->hrrq[i].host_rrq,
9418 ioa_cfg->hrrq[i].host_rrq_dma);
9419
9420 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9421 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9422
9423 for (i = 0; i < IPR_MAX_HCAMS; i++) {
9424 dma_free_coherent(&ioa_cfg->pdev->dev,
9425 sizeof(struct ipr_hostrcb),
9426 ioa_cfg->hostrcb[i],
9427 ioa_cfg->hostrcb_dma[i]);
9428 }
9429
9430 ipr_free_dump(ioa_cfg);
9431 kfree(ioa_cfg->trace);
9432 }
9433
9434 /**
9435 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9436 * @ioa_cfg: ipr cfg struct
9437 *
9438 * This function frees all allocated IRQs for the
9439 * specified adapter.
9440 *
9441 * Return value:
9442 * none
9443 **/
9444 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9445 {
9446 struct pci_dev *pdev = ioa_cfg->pdev;
9447 int i;
9448
9449 for (i = 0; i < ioa_cfg->nvectors; i++)
9450 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]);
9451 pci_free_irq_vectors(pdev);
9452 }
9453
9454 /**
9455 * ipr_free_all_resources - Free all allocated resources for an adapter.
9456 * @ipr_cmd: ipr command struct
9457 *
9458 * This function frees all allocated resources for the
9459 * specified adapter.
9460 *
9461 * Return value:
9462 * none
9463 **/
9464 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9465 {
9466 struct pci_dev *pdev = ioa_cfg->pdev;
9467
9468 ENTER;
9469 ipr_free_irqs(ioa_cfg);
9470 if (ioa_cfg->reset_work_q)
9471 destroy_workqueue(ioa_cfg->reset_work_q);
9472 iounmap(ioa_cfg->hdw_dma_regs);
9473 pci_release_regions(pdev);
9474 ipr_free_mem(ioa_cfg);
9475 scsi_host_put(ioa_cfg->host);
9476 pci_disable_device(pdev);
9477 LEAVE;
9478 }
9479
9480 /**
9481 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9482 * @ioa_cfg: ioa config struct
9483 *
9484 * Return value:
9485 * 0 on success / -ENOMEM on allocation failure
9486 **/
9487 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9488 {
9489 struct ipr_cmnd *ipr_cmd;
9490 struct ipr_ioarcb *ioarcb;
9491 dma_addr_t dma_addr;
9492 int i, entries_each_hrrq, hrrq_id = 0;
9493
9494 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9495 sizeof(struct ipr_cmnd), 512, 0);
9496
9497 if (!ioa_cfg->ipr_cmd_pool)
9498 return -ENOMEM;
9499
9500 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9501 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9502
9503 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9504 ipr_free_cmd_blks(ioa_cfg);
9505 return -ENOMEM;
9506 }
9507
9508 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9509 if (ioa_cfg->hrrq_num > 1) {
9510 if (i == 0) {
9511 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9512 ioa_cfg->hrrq[i].min_cmd_id = 0;
9513 ioa_cfg->hrrq[i].max_cmd_id =
9514 (entries_each_hrrq - 1);
9515 } else {
9516 entries_each_hrrq =
9517 IPR_NUM_BASE_CMD_BLKS/
9518 (ioa_cfg->hrrq_num - 1);
9519 ioa_cfg->hrrq[i].min_cmd_id =
9520 IPR_NUM_INTERNAL_CMD_BLKS +
9521 (i - 1) * entries_each_hrrq;
9522 ioa_cfg->hrrq[i].max_cmd_id =
9523 (IPR_NUM_INTERNAL_CMD_BLKS +
9524 i * entries_each_hrrq - 1);
9525 }
9526 } else {
9527 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9528 ioa_cfg->hrrq[i].min_cmd_id = 0;
9529 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9530 }
9531 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9532 }
9533
9534 BUG_ON(ioa_cfg->hrrq_num == 0);
9535
9536 i = IPR_NUM_CMD_BLKS -
9537 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9538 if (i > 0) {
9539 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9540 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9541 }
9542
9543 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9544 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9545
9546 if (!ipr_cmd) {
9547 ipr_free_cmd_blks(ioa_cfg);
9548 return -ENOMEM;
9549 }
9550
9551 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9552 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9553 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9554
9555 ioarcb = &ipr_cmd->ioarcb;
9556 ipr_cmd->dma_addr = dma_addr;
9557 if (ioa_cfg->sis64)
9558 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9559 else
9560 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9561
9562 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9563 if (ioa_cfg->sis64) {
9564 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9565 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9566 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9567 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9568 } else {
9569 ioarcb->write_ioadl_addr =
9570 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9571 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9572 ioarcb->ioasa_host_pci_addr =
9573 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9574 }
9575 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9576 ipr_cmd->cmd_index = i;
9577 ipr_cmd->ioa_cfg = ioa_cfg;
9578 ipr_cmd->sense_buffer_dma = dma_addr +
9579 offsetof(struct ipr_cmnd, sense_buffer);
9580
9581 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9582 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9583 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9584 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9585 hrrq_id++;
9586 }
9587
9588 return 0;
9589 }
9590
9591 /**
9592 * ipr_alloc_mem - Allocate memory for an adapter
9593 * @ioa_cfg: ioa config struct
9594 *
9595 * Return value:
9596 * 0 on success / non-zero for error
9597 **/
9598 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9599 {
9600 struct pci_dev *pdev = ioa_cfg->pdev;
9601 int i, rc = -ENOMEM;
9602
9603 ENTER;
9604 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9605 ioa_cfg->max_devs_supported, GFP_KERNEL);
9606
9607 if (!ioa_cfg->res_entries)
9608 goto out;
9609
9610 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9611 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9612 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9613 }
9614
9615 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9616 sizeof(struct ipr_misc_cbs),
9617 &ioa_cfg->vpd_cbs_dma,
9618 GFP_KERNEL);
9619
9620 if (!ioa_cfg->vpd_cbs)
9621 goto out_free_res_entries;
9622
9623 if (ipr_alloc_cmd_blks(ioa_cfg))
9624 goto out_free_vpd_cbs;
9625
9626 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9627 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9628 sizeof(u32) * ioa_cfg->hrrq[i].size,
9629 &ioa_cfg->hrrq[i].host_rrq_dma,
9630 GFP_KERNEL);
9631
9632 if (!ioa_cfg->hrrq[i].host_rrq) {
9633 while (--i > 0)
9634 dma_free_coherent(&pdev->dev,
9635 sizeof(u32) * ioa_cfg->hrrq[i].size,
9636 ioa_cfg->hrrq[i].host_rrq,
9637 ioa_cfg->hrrq[i].host_rrq_dma);
9638 goto out_ipr_free_cmd_blocks;
9639 }
9640 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9641 }
9642
9643 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9644 ioa_cfg->cfg_table_size,
9645 &ioa_cfg->cfg_table_dma,
9646 GFP_KERNEL);
9647
9648 if (!ioa_cfg->u.cfg_table)
9649 goto out_free_host_rrq;
9650
9651 for (i = 0; i < IPR_MAX_HCAMS; i++) {
9652 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9653 sizeof(struct ipr_hostrcb),
9654 &ioa_cfg->hostrcb_dma[i],
9655 GFP_KERNEL);
9656
9657 if (!ioa_cfg->hostrcb[i])
9658 goto out_free_hostrcb_dma;
9659
9660 ioa_cfg->hostrcb[i]->hostrcb_dma =
9661 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9662 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9663 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9664 }
9665
9666 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9667 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9668
9669 if (!ioa_cfg->trace)
9670 goto out_free_hostrcb_dma;
9671
9672 rc = 0;
9673 out:
9674 LEAVE;
9675 return rc;
9676
9677 out_free_hostrcb_dma:
9678 while (i-- > 0) {
9679 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9680 ioa_cfg->hostrcb[i],
9681 ioa_cfg->hostrcb_dma[i]);
9682 }
9683 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9684 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9685 out_free_host_rrq:
9686 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9687 dma_free_coherent(&pdev->dev,
9688 sizeof(u32) * ioa_cfg->hrrq[i].size,
9689 ioa_cfg->hrrq[i].host_rrq,
9690 ioa_cfg->hrrq[i].host_rrq_dma);
9691 }
9692 out_ipr_free_cmd_blocks:
9693 ipr_free_cmd_blks(ioa_cfg);
9694 out_free_vpd_cbs:
9695 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9696 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9697 out_free_res_entries:
9698 kfree(ioa_cfg->res_entries);
9699 goto out;
9700 }
9701
9702 /**
9703 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9704 * @ioa_cfg: ioa config struct
9705 *
9706 * Return value:
9707 * none
9708 **/
9709 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9710 {
9711 int i;
9712
9713 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9714 ioa_cfg->bus_attr[i].bus = i;
9715 ioa_cfg->bus_attr[i].qas_enabled = 0;
9716 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9717 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9718 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9719 else
9720 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9721 }
9722 }
9723
9724 /**
9725 * ipr_init_regs - Initialize IOA registers
9726 * @ioa_cfg: ioa config struct
9727 *
9728 * Return value:
9729 * none
9730 **/
9731 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9732 {
9733 const struct ipr_interrupt_offsets *p;
9734 struct ipr_interrupts *t;
9735 void __iomem *base;
9736
9737 p = &ioa_cfg->chip_cfg->regs;
9738 t = &ioa_cfg->regs;
9739 base = ioa_cfg->hdw_dma_regs;
9740
9741 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9742 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9743 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9744 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9745 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9746 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9747 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9748 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9749 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9750 t->ioarrin_reg = base + p->ioarrin_reg;
9751 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9752 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9753 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9754 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9755 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9756 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9757
9758 if (ioa_cfg->sis64) {
9759 t->init_feedback_reg = base + p->init_feedback_reg;
9760 t->dump_addr_reg = base + p->dump_addr_reg;
9761 t->dump_data_reg = base + p->dump_data_reg;
9762 t->endian_swap_reg = base + p->endian_swap_reg;
9763 }
9764 }
9765
9766 /**
9767 * ipr_init_ioa_cfg - Initialize IOA config struct
9768 * @ioa_cfg: ioa config struct
9769 * @host: scsi host struct
9770 * @pdev: PCI dev struct
9771 *
9772 * Return value:
9773 * none
9774 **/
9775 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9776 struct Scsi_Host *host, struct pci_dev *pdev)
9777 {
9778 int i;
9779
9780 ioa_cfg->host = host;
9781 ioa_cfg->pdev = pdev;
9782 ioa_cfg->log_level = ipr_log_level;
9783 ioa_cfg->doorbell = IPR_DOORBELL;
9784 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9785 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9786 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9787 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9788 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9789 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9790
9791 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9792 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9793 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q);
9794 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9795 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9796 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9797 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9798 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9799 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9800 ioa_cfg->sdt_state = INACTIVE;
9801
9802 ipr_initialize_bus_attr(ioa_cfg);
9803 ioa_cfg->max_devs_supported = ipr_max_devs;
9804
9805 if (ioa_cfg->sis64) {
9806 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9807 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9808 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9809 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9810 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9811 + ((sizeof(struct ipr_config_table_entry64)
9812 * ioa_cfg->max_devs_supported)));
9813 } else {
9814 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9815 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9816 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9817 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9818 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9819 + ((sizeof(struct ipr_config_table_entry)
9820 * ioa_cfg->max_devs_supported)));
9821 }
9822
9823 host->max_channel = IPR_VSET_BUS;
9824 host->unique_id = host->host_no;
9825 host->max_cmd_len = IPR_MAX_CDB_LEN;
9826 host->can_queue = ioa_cfg->max_cmds;
9827 pci_set_drvdata(pdev, ioa_cfg);
9828
9829 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9830 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9831 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9832 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9833 if (i == 0)
9834 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9835 else
9836 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9837 }
9838 }
9839
9840 /**
9841 * ipr_get_chip_info - Find adapter chip information
9842 * @dev_id: PCI device id struct
9843 *
9844 * Return value:
9845 * ptr to chip information on success / NULL on failure
9846 **/
9847 static const struct ipr_chip_t *
9848 ipr_get_chip_info(const struct pci_device_id *dev_id)
9849 {
9850 int i;
9851
9852 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9853 if (ipr_chip[i].vendor == dev_id->vendor &&
9854 ipr_chip[i].device == dev_id->device)
9855 return &ipr_chip[i];
9856 return NULL;
9857 }
9858
9859 /**
9860 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9861 * during probe time
9862 * @ioa_cfg: ioa config struct
9863 *
9864 * Return value:
9865 * None
9866 **/
9867 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9868 {
9869 struct pci_dev *pdev = ioa_cfg->pdev;
9870
9871 if (pci_channel_offline(pdev)) {
9872 wait_event_timeout(ioa_cfg->eeh_wait_q,
9873 !pci_channel_offline(pdev),
9874 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9875 pci_restore_state(pdev);
9876 }
9877 }
9878
9879 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9880 {
9881 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9882
9883 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9884 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9885 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9886 ioa_cfg->vectors_info[vec_idx].
9887 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9888 }
9889 }
9890
9891 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg,
9892 struct pci_dev *pdev)
9893 {
9894 int i, rc;
9895
9896 for (i = 1; i < ioa_cfg->nvectors; i++) {
9897 rc = request_irq(pci_irq_vector(pdev, i),
9898 ipr_isr_mhrrq,
9899 0,
9900 ioa_cfg->vectors_info[i].desc,
9901 &ioa_cfg->hrrq[i]);
9902 if (rc) {
9903 while (--i >= 0)
9904 free_irq(pci_irq_vector(pdev, i),
9905 &ioa_cfg->hrrq[i]);
9906 return rc;
9907 }
9908 }
9909 return 0;
9910 }
9911
9912 /**
9913 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9914 * @pdev: PCI device struct
9915 *
9916 * Description: Simply set the msi_received flag to 1 indicating that
9917 * Message Signaled Interrupts are supported.
9918 *
9919 * Return value:
9920 * 0 on success / non-zero on failure
9921 **/
9922 static irqreturn_t ipr_test_intr(int irq, void *devp)
9923 {
9924 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9925 unsigned long lock_flags = 0;
9926 irqreturn_t rc = IRQ_HANDLED;
9927
9928 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9929 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9930
9931 ioa_cfg->msi_received = 1;
9932 wake_up(&ioa_cfg->msi_wait_q);
9933
9934 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9935 return rc;
9936 }
9937
9938 /**
9939 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9940 * @pdev: PCI device struct
9941 *
9942 * Description: This routine sets up and initiates a test interrupt to determine
9943 * if the interrupt is received via the ipr_test_intr() service routine.
9944 * If the tests fails, the driver will fall back to LSI.
9945 *
9946 * Return value:
9947 * 0 on success / non-zero on failure
9948 **/
9949 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9950 {
9951 int rc;
9952 volatile u32 int_reg;
9953 unsigned long lock_flags = 0;
9954 int irq = pci_irq_vector(pdev, 0);
9955
9956 ENTER;
9957
9958 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9959 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9960 ioa_cfg->msi_received = 0;
9961 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9962 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9963 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9964 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9965
9966 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9967 if (rc) {
9968 dev_err(&pdev->dev, "Can not assign irq %d\n", irq);
9969 return rc;
9970 } else if (ipr_debug)
9971 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq);
9972
9973 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9974 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9975 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9976 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9977 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9978
9979 if (!ioa_cfg->msi_received) {
9980 /* MSI test failed */
9981 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9982 rc = -EOPNOTSUPP;
9983 } else if (ipr_debug)
9984 dev_info(&pdev->dev, "MSI test succeeded.\n");
9985
9986 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9987
9988 free_irq(irq, ioa_cfg);
9989
9990 LEAVE;
9991
9992 return rc;
9993 }
9994
9995 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9996 * @pdev: PCI device struct
9997 * @dev_id: PCI device id struct
9998 *
9999 * Return value:
10000 * 0 on success / non-zero on failure
10001 **/
10002 static int ipr_probe_ioa(struct pci_dev *pdev,
10003 const struct pci_device_id *dev_id)
10004 {
10005 struct ipr_ioa_cfg *ioa_cfg;
10006 struct Scsi_Host *host;
10007 unsigned long ipr_regs_pci;
10008 void __iomem *ipr_regs;
10009 int rc = PCIBIOS_SUCCESSFUL;
10010 volatile u32 mask, uproc, interrupts;
10011 unsigned long lock_flags, driver_lock_flags;
10012 unsigned int irq_flag;
10013
10014 ENTER;
10015
10016 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
10017 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
10018
10019 if (!host) {
10020 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
10021 rc = -ENOMEM;
10022 goto out;
10023 }
10024
10025 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
10026 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
10027 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
10028
10029 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
10030
10031 if (!ioa_cfg->ipr_chip) {
10032 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
10033 dev_id->vendor, dev_id->device);
10034 goto out_scsi_host_put;
10035 }
10036
10037 /* set SIS 32 or SIS 64 */
10038 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
10039 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
10040 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
10041 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10042
10043 if (ipr_transop_timeout)
10044 ioa_cfg->transop_timeout = ipr_transop_timeout;
10045 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10046 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10047 else
10048 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10049
10050 ioa_cfg->revid = pdev->revision;
10051
10052 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10053
10054 ipr_regs_pci = pci_resource_start(pdev, 0);
10055
10056 rc = pci_request_regions(pdev, IPR_NAME);
10057 if (rc < 0) {
10058 dev_err(&pdev->dev,
10059 "Couldn't register memory range of registers\n");
10060 goto out_scsi_host_put;
10061 }
10062
10063 rc = pci_enable_device(pdev);
10064
10065 if (rc || pci_channel_offline(pdev)) {
10066 if (pci_channel_offline(pdev)) {
10067 ipr_wait_for_pci_err_recovery(ioa_cfg);
10068 rc = pci_enable_device(pdev);
10069 }
10070
10071 if (rc) {
10072 dev_err(&pdev->dev, "Cannot enable adapter\n");
10073 ipr_wait_for_pci_err_recovery(ioa_cfg);
10074 goto out_release_regions;
10075 }
10076 }
10077
10078 ipr_regs = pci_ioremap_bar(pdev, 0);
10079
10080 if (!ipr_regs) {
10081 dev_err(&pdev->dev,
10082 "Couldn't map memory range of registers\n");
10083 rc = -ENOMEM;
10084 goto out_disable;
10085 }
10086
10087 ioa_cfg->hdw_dma_regs = ipr_regs;
10088 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10089 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10090
10091 ipr_init_regs(ioa_cfg);
10092
10093 if (ioa_cfg->sis64) {
10094 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10095 if (rc < 0) {
10096 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10097 rc = dma_set_mask_and_coherent(&pdev->dev,
10098 DMA_BIT_MASK(32));
10099 }
10100 } else
10101 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10102
10103 if (rc < 0) {
10104 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10105 goto cleanup_nomem;
10106 }
10107
10108 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10109 ioa_cfg->chip_cfg->cache_line_size);
10110
10111 if (rc != PCIBIOS_SUCCESSFUL) {
10112 dev_err(&pdev->dev, "Write of cache line size failed\n");
10113 ipr_wait_for_pci_err_recovery(ioa_cfg);
10114 rc = -EIO;
10115 goto cleanup_nomem;
10116 }
10117
10118 /* Issue MMIO read to ensure card is not in EEH */
10119 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10120 ipr_wait_for_pci_err_recovery(ioa_cfg);
10121
10122 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10123 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10124 IPR_MAX_MSIX_VECTORS);
10125 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10126 }
10127
10128 irq_flag = PCI_IRQ_LEGACY;
10129 if (ioa_cfg->ipr_chip->has_msi)
10130 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX;
10131 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag);
10132 if (rc < 0) {
10133 ipr_wait_for_pci_err_recovery(ioa_cfg);
10134 goto cleanup_nomem;
10135 }
10136 ioa_cfg->nvectors = rc;
10137
10138 if (!pdev->msi_enabled && !pdev->msix_enabled)
10139 ioa_cfg->clear_isr = 1;
10140
10141 pci_set_master(pdev);
10142
10143 if (pci_channel_offline(pdev)) {
10144 ipr_wait_for_pci_err_recovery(ioa_cfg);
10145 pci_set_master(pdev);
10146 if (pci_channel_offline(pdev)) {
10147 rc = -EIO;
10148 goto out_msi_disable;
10149 }
10150 }
10151
10152 if (pdev->msi_enabled || pdev->msix_enabled) {
10153 rc = ipr_test_msi(ioa_cfg, pdev);
10154 switch (rc) {
10155 case 0:
10156 dev_info(&pdev->dev,
10157 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors,
10158 pdev->msix_enabled ? "-X" : "");
10159 break;
10160 case -EOPNOTSUPP:
10161 ipr_wait_for_pci_err_recovery(ioa_cfg);
10162 pci_free_irq_vectors(pdev);
10163
10164 ioa_cfg->nvectors = 1;
10165 ioa_cfg->clear_isr = 1;
10166 break;
10167 default:
10168 goto out_msi_disable;
10169 }
10170 }
10171
10172 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10173 (unsigned int)num_online_cpus(),
10174 (unsigned int)IPR_MAX_HRRQ_NUM);
10175
10176 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10177 goto out_msi_disable;
10178
10179 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10180 goto out_msi_disable;
10181
10182 rc = ipr_alloc_mem(ioa_cfg);
10183 if (rc < 0) {
10184 dev_err(&pdev->dev,
10185 "Couldn't allocate enough memory for device driver!\n");
10186 goto out_msi_disable;
10187 }
10188
10189 /* Save away PCI config space for use following IOA reset */
10190 rc = pci_save_state(pdev);
10191
10192 if (rc != PCIBIOS_SUCCESSFUL) {
10193 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10194 rc = -EIO;
10195 goto cleanup_nolog;
10196 }
10197
10198 /*
10199 * If HRRQ updated interrupt is not masked, or reset alert is set,
10200 * the card is in an unknown state and needs a hard reset
10201 */
10202 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10203 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10204 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10205 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10206 ioa_cfg->needs_hard_reset = 1;
10207 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10208 ioa_cfg->needs_hard_reset = 1;
10209 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10210 ioa_cfg->ioa_unit_checked = 1;
10211
10212 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10213 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10215
10216 if (pdev->msi_enabled || pdev->msix_enabled) {
10217 name_msi_vectors(ioa_cfg);
10218 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0,
10219 ioa_cfg->vectors_info[0].desc,
10220 &ioa_cfg->hrrq[0]);
10221 if (!rc)
10222 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev);
10223 } else {
10224 rc = request_irq(pdev->irq, ipr_isr,
10225 IRQF_SHARED,
10226 IPR_NAME, &ioa_cfg->hrrq[0]);
10227 }
10228 if (rc) {
10229 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10230 pdev->irq, rc);
10231 goto cleanup_nolog;
10232 }
10233
10234 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10235 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10236 ioa_cfg->needs_warm_reset = 1;
10237 ioa_cfg->reset = ipr_reset_slot_reset;
10238
10239 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10240 WQ_MEM_RECLAIM, host->host_no);
10241
10242 if (!ioa_cfg->reset_work_q) {
10243 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10244 rc = -ENOMEM;
10245 goto out_free_irq;
10246 }
10247 } else
10248 ioa_cfg->reset = ipr_reset_start_bist;
10249
10250 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10251 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10252 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10253
10254 LEAVE;
10255 out:
10256 return rc;
10257
10258 out_free_irq:
10259 ipr_free_irqs(ioa_cfg);
10260 cleanup_nolog:
10261 ipr_free_mem(ioa_cfg);
10262 out_msi_disable:
10263 ipr_wait_for_pci_err_recovery(ioa_cfg);
10264 pci_free_irq_vectors(pdev);
10265 cleanup_nomem:
10266 iounmap(ipr_regs);
10267 out_disable:
10268 pci_disable_device(pdev);
10269 out_release_regions:
10270 pci_release_regions(pdev);
10271 out_scsi_host_put:
10272 scsi_host_put(host);
10273 goto out;
10274 }
10275
10276 /**
10277 * ipr_initiate_ioa_bringdown - Bring down an adapter
10278 * @ioa_cfg: ioa config struct
10279 * @shutdown_type: shutdown type
10280 *
10281 * Description: This function will initiate bringing down the adapter.
10282 * This consists of issuing an IOA shutdown to the adapter
10283 * to flush the cache, and running BIST.
10284 * If the caller needs to wait on the completion of the reset,
10285 * the caller must sleep on the reset_wait_q.
10286 *
10287 * Return value:
10288 * none
10289 **/
10290 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10291 enum ipr_shutdown_type shutdown_type)
10292 {
10293 ENTER;
10294 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10295 ioa_cfg->sdt_state = ABORT_DUMP;
10296 ioa_cfg->reset_retries = 0;
10297 ioa_cfg->in_ioa_bringdown = 1;
10298 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10299 LEAVE;
10300 }
10301
10302 /**
10303 * __ipr_remove - Remove a single adapter
10304 * @pdev: pci device struct
10305 *
10306 * Adapter hot plug remove entry point.
10307 *
10308 * Return value:
10309 * none
10310 **/
10311 static void __ipr_remove(struct pci_dev *pdev)
10312 {
10313 unsigned long host_lock_flags = 0;
10314 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10315 int i;
10316 unsigned long driver_lock_flags;
10317 ENTER;
10318
10319 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10320 while (ioa_cfg->in_reset_reload) {
10321 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10322 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10323 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10324 }
10325
10326 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10327 spin_lock(&ioa_cfg->hrrq[i]._lock);
10328 ioa_cfg->hrrq[i].removing_ioa = 1;
10329 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10330 }
10331 wmb();
10332 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10333
10334 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10335 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10336 flush_work(&ioa_cfg->work_q);
10337 if (ioa_cfg->reset_work_q)
10338 flush_workqueue(ioa_cfg->reset_work_q);
10339 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10340 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10341
10342 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10343 list_del(&ioa_cfg->queue);
10344 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10345
10346 if (ioa_cfg->sdt_state == ABORT_DUMP)
10347 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10348 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10349
10350 ipr_free_all_resources(ioa_cfg);
10351
10352 LEAVE;
10353 }
10354
10355 /**
10356 * ipr_remove - IOA hot plug remove entry point
10357 * @pdev: pci device struct
10358 *
10359 * Adapter hot plug remove entry point.
10360 *
10361 * Return value:
10362 * none
10363 **/
10364 static void ipr_remove(struct pci_dev *pdev)
10365 {
10366 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10367
10368 ENTER;
10369
10370 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10371 &ipr_trace_attr);
10372 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10373 &ipr_dump_attr);
10374 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10375 &ipr_ioa_async_err_log);
10376 scsi_remove_host(ioa_cfg->host);
10377
10378 __ipr_remove(pdev);
10379
10380 LEAVE;
10381 }
10382
10383 /**
10384 * ipr_probe - Adapter hot plug add entry point
10385 *
10386 * Return value:
10387 * 0 on success / non-zero on failure
10388 **/
10389 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10390 {
10391 struct ipr_ioa_cfg *ioa_cfg;
10392 unsigned long flags;
10393 int rc, i;
10394
10395 rc = ipr_probe_ioa(pdev, dev_id);
10396
10397 if (rc)
10398 return rc;
10399
10400 ioa_cfg = pci_get_drvdata(pdev);
10401 rc = ipr_probe_ioa_part2(ioa_cfg);
10402
10403 if (rc) {
10404 __ipr_remove(pdev);
10405 return rc;
10406 }
10407
10408 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10409
10410 if (rc) {
10411 __ipr_remove(pdev);
10412 return rc;
10413 }
10414
10415 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10416 &ipr_trace_attr);
10417
10418 if (rc) {
10419 scsi_remove_host(ioa_cfg->host);
10420 __ipr_remove(pdev);
10421 return rc;
10422 }
10423
10424 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj,
10425 &ipr_ioa_async_err_log);
10426
10427 if (rc) {
10428 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10429 &ipr_dump_attr);
10430 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10431 &ipr_trace_attr);
10432 scsi_remove_host(ioa_cfg->host);
10433 __ipr_remove(pdev);
10434 return rc;
10435 }
10436
10437 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10438 &ipr_dump_attr);
10439
10440 if (rc) {
10441 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10442 &ipr_ioa_async_err_log);
10443 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10444 &ipr_trace_attr);
10445 scsi_remove_host(ioa_cfg->host);
10446 __ipr_remove(pdev);
10447 return rc;
10448 }
10449 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10450 ioa_cfg->scan_enabled = 1;
10451 schedule_work(&ioa_cfg->work_q);
10452 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10453
10454 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10455
10456 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10457 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10458 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10459 ioa_cfg->iopoll_weight, ipr_iopoll);
10460 }
10461 }
10462
10463 scsi_scan_host(ioa_cfg->host);
10464
10465 return 0;
10466 }
10467
10468 /**
10469 * ipr_shutdown - Shutdown handler.
10470 * @pdev: pci device struct
10471 *
10472 * This function is invoked upon system shutdown/reboot. It will issue
10473 * an adapter shutdown to the adapter to flush the write cache.
10474 *
10475 * Return value:
10476 * none
10477 **/
10478 static void ipr_shutdown(struct pci_dev *pdev)
10479 {
10480 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10481 unsigned long lock_flags = 0;
10482 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10483 int i;
10484
10485 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10486 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10487 ioa_cfg->iopoll_weight = 0;
10488 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10489 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10490 }
10491
10492 while (ioa_cfg->in_reset_reload) {
10493 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10494 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10495 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10496 }
10497
10498 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10499 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10500
10501 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10502 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10503 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10504 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10505 ipr_free_irqs(ioa_cfg);
10506 pci_disable_device(ioa_cfg->pdev);
10507 }
10508 }
10509
10510 static struct pci_device_id ipr_pci_table[] = {
10511 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10512 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10513 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10514 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10515 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10516 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10517 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10518 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10519 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10520 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10521 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10522 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10523 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10524 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10525 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10526 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10527 IPR_USE_LONG_TRANSOP_TIMEOUT },
10528 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10529 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10530 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10531 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10532 IPR_USE_LONG_TRANSOP_TIMEOUT },
10533 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10534 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10535 IPR_USE_LONG_TRANSOP_TIMEOUT },
10536 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10538 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10539 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10540 IPR_USE_LONG_TRANSOP_TIMEOUT},
10541 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10542 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10543 IPR_USE_LONG_TRANSOP_TIMEOUT },
10544 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10545 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10546 IPR_USE_LONG_TRANSOP_TIMEOUT },
10547 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10548 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10549 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10550 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10551 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10553 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10554 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10555 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10556 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10557 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10558 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10559 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10560 IPR_USE_LONG_TRANSOP_TIMEOUT },
10561 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10562 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10563 IPR_USE_LONG_TRANSOP_TIMEOUT },
10564 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10565 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10566 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10567 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10568 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10569 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10570 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10571 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10572 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10573 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10574 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10575 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10576 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10577 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10578 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10579 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10580 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10581 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10582 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10583 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10584 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10585 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10586 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10587 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10588 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10589 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10590 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10591 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10592 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10593 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10594 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10595 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10596 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10597 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10598 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10599 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10600 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10601 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10602 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10603 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10604 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10605 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10606 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10607 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10608 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10609 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10610 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10611 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10612 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10613 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10614 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10615 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10616 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10617 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 },
10618 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10619 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 },
10620 { }
10621 };
10622 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10623
10624 static const struct pci_error_handlers ipr_err_handler = {
10625 .error_detected = ipr_pci_error_detected,
10626 .mmio_enabled = ipr_pci_mmio_enabled,
10627 .slot_reset = ipr_pci_slot_reset,
10628 };
10629
10630 static struct pci_driver ipr_driver = {
10631 .name = IPR_NAME,
10632 .id_table = ipr_pci_table,
10633 .probe = ipr_probe,
10634 .remove = ipr_remove,
10635 .shutdown = ipr_shutdown,
10636 .err_handler = &ipr_err_handler,
10637 };
10638
10639 /**
10640 * ipr_halt_done - Shutdown prepare completion
10641 *
10642 * Return value:
10643 * none
10644 **/
10645 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10646 {
10647 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10648 }
10649
10650 /**
10651 * ipr_halt - Issue shutdown prepare to all adapters
10652 *
10653 * Return value:
10654 * NOTIFY_OK on success / NOTIFY_DONE on failure
10655 **/
10656 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10657 {
10658 struct ipr_cmnd *ipr_cmd;
10659 struct ipr_ioa_cfg *ioa_cfg;
10660 unsigned long flags = 0, driver_lock_flags;
10661
10662 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10663 return NOTIFY_DONE;
10664
10665 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10666
10667 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10668 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10669 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10670 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10671 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10672 continue;
10673 }
10674
10675 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10676 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10677 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10678 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10679 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10680
10681 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10682 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10683 }
10684 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10685
10686 return NOTIFY_OK;
10687 }
10688
10689 static struct notifier_block ipr_notifier = {
10690 ipr_halt, NULL, 0
10691 };
10692
10693 /**
10694 * ipr_init - Module entry point
10695 *
10696 * Return value:
10697 * 0 on success / negative value on failure
10698 **/
10699 static int __init ipr_init(void)
10700 {
10701 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10702 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10703
10704 register_reboot_notifier(&ipr_notifier);
10705 return pci_register_driver(&ipr_driver);
10706 }
10707
10708 /**
10709 * ipr_exit - Module unload
10710 *
10711 * Module unload entry point.
10712 *
10713 * Return value:
10714 * none
10715 **/
10716 static void __exit ipr_exit(void)
10717 {
10718 unregister_reboot_notifier(&ipr_notifier);
10719 pci_unregister_driver(&ipr_driver);
10720 }
10721
10722 module_init(ipr_init);
10723 module_exit(ipr_exit);
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