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