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mm: remove more IS_ERR_VALUE abuses
[linux/fpc-iii.git] / drivers / scsi / ipr.c
blobd6a691e27d33317c72d785340b5b371378932741
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 irq_poll *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, "irq_poll 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 irq_poll 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 irq_poll 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 irq_poll_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 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3710 ioa_cfg->iopoll_weight, ipr_iopoll);
3711 }
3712 }
3713 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3714
3715 return strlen(buf);
3716 }
3717
3718 static struct device_attribute ipr_iopoll_weight_attr = {
3719 .attr = {
3720 .name = "iopoll_weight",
3721 .mode = S_IRUGO | S_IWUSR,
3722 },
3723 .show = ipr_show_iopoll_weight,
3724 .store = ipr_store_iopoll_weight
3725 };
3726
3727 /**
3728 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3729 * @buf_len: buffer length
3730 *
3731 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3732 * list to use for microcode download
3733 *
3734 * Return value:
3735 * pointer to sglist / NULL on failure
3736 **/
3737 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3738 {
3739 int sg_size, order, bsize_elem, num_elem, i, j;
3740 struct ipr_sglist *sglist;
3741 struct scatterlist *scatterlist;
3742 struct page *page;
3743
3744 /* Get the minimum size per scatter/gather element */
3745 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3746
3747 /* Get the actual size per element */
3748 order = get_order(sg_size);
3749
3750 /* Determine the actual number of bytes per element */
3751 bsize_elem = PAGE_SIZE * (1 << order);
3752
3753 /* Determine the actual number of sg entries needed */
3754 if (buf_len % bsize_elem)
3755 num_elem = (buf_len / bsize_elem) + 1;
3756 else
3757 num_elem = buf_len / bsize_elem;
3758
3759 /* Allocate a scatter/gather list for the DMA */
3760 sglist = kzalloc(sizeof(struct ipr_sglist) +
3761 (sizeof(struct scatterlist) * (num_elem - 1)),
3762 GFP_KERNEL);
3763
3764 if (sglist == NULL) {
3765 ipr_trace;
3766 return NULL;
3767 }
3768
3769 scatterlist = sglist->scatterlist;
3770 sg_init_table(scatterlist, num_elem);
3771
3772 sglist->order = order;
3773 sglist->num_sg = num_elem;
3774
3775 /* Allocate a bunch of sg elements */
3776 for (i = 0; i < num_elem; i++) {
3777 page = alloc_pages(GFP_KERNEL, order);
3778 if (!page) {
3779 ipr_trace;
3780
3781 /* Free up what we already allocated */
3782 for (j = i - 1; j >= 0; j--)
3783 __free_pages(sg_page(&scatterlist[j]), order);
3784 kfree(sglist);
3785 return NULL;
3786 }
3787
3788 sg_set_page(&scatterlist[i], page, 0, 0);
3789 }
3790
3791 return sglist;
3792 }
3793
3794 /**
3795 * ipr_free_ucode_buffer - Frees a microcode download buffer
3796 * @p_dnld: scatter/gather list pointer
3797 *
3798 * Free a DMA'able ucode download buffer previously allocated with
3799 * ipr_alloc_ucode_buffer
3800 *
3801 * Return value:
3802 * nothing
3803 **/
3804 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3805 {
3806 int i;
3807
3808 for (i = 0; i < sglist->num_sg; i++)
3809 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3810
3811 kfree(sglist);
3812 }
3813
3814 /**
3815 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3816 * @sglist: scatter/gather list pointer
3817 * @buffer: buffer pointer
3818 * @len: buffer length
3819 *
3820 * Copy a microcode image from a user buffer into a buffer allocated by
3821 * ipr_alloc_ucode_buffer
3822 *
3823 * Return value:
3824 * 0 on success / other on failure
3825 **/
3826 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3827 u8 *buffer, u32 len)
3828 {
3829 int bsize_elem, i, result = 0;
3830 struct scatterlist *scatterlist;
3831 void *kaddr;
3832
3833 /* Determine the actual number of bytes per element */
3834 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3835
3836 scatterlist = sglist->scatterlist;
3837
3838 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3839 struct page *page = sg_page(&scatterlist[i]);
3840
3841 kaddr = kmap(page);
3842 memcpy(kaddr, buffer, bsize_elem);
3843 kunmap(page);
3844
3845 scatterlist[i].length = bsize_elem;
3846
3847 if (result != 0) {
3848 ipr_trace;
3849 return result;
3850 }
3851 }
3852
3853 if (len % bsize_elem) {
3854 struct page *page = sg_page(&scatterlist[i]);
3855
3856 kaddr = kmap(page);
3857 memcpy(kaddr, buffer, len % bsize_elem);
3858 kunmap(page);
3859
3860 scatterlist[i].length = len % bsize_elem;
3861 }
3862
3863 sglist->buffer_len = len;
3864 return result;
3865 }
3866
3867 /**
3868 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3869 * @ipr_cmd: ipr command struct
3870 * @sglist: scatter/gather list
3871 *
3872 * Builds a microcode download IOA data list (IOADL).
3873 *
3874 **/
3875 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3876 struct ipr_sglist *sglist)
3877 {
3878 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3879 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3880 struct scatterlist *scatterlist = sglist->scatterlist;
3881 int i;
3882
3883 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3884 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3885 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3886
3887 ioarcb->ioadl_len =
3888 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3889 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3890 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3891 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3892 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3893 }
3894
3895 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3896 }
3897
3898 /**
3899 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3900 * @ipr_cmd: ipr command struct
3901 * @sglist: scatter/gather list
3902 *
3903 * Builds a microcode download IOA data list (IOADL).
3904 *
3905 **/
3906 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3907 struct ipr_sglist *sglist)
3908 {
3909 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3910 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3911 struct scatterlist *scatterlist = sglist->scatterlist;
3912 int i;
3913
3914 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3915 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3916 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3917
3918 ioarcb->ioadl_len =
3919 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3920
3921 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3922 ioadl[i].flags_and_data_len =
3923 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3924 ioadl[i].address =
3925 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3926 }
3927
3928 ioadl[i-1].flags_and_data_len |=
3929 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3930 }
3931
3932 /**
3933 * ipr_update_ioa_ucode - Update IOA's microcode
3934 * @ioa_cfg: ioa config struct
3935 * @sglist: scatter/gather list
3936 *
3937 * Initiate an adapter reset to update the IOA's microcode
3938 *
3939 * Return value:
3940 * 0 on success / -EIO on failure
3941 **/
3942 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3943 struct ipr_sglist *sglist)
3944 {
3945 unsigned long lock_flags;
3946
3947 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3948 while (ioa_cfg->in_reset_reload) {
3949 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3950 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3951 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3952 }
3953
3954 if (ioa_cfg->ucode_sglist) {
3955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3956 dev_err(&ioa_cfg->pdev->dev,
3957 "Microcode download already in progress\n");
3958 return -EIO;
3959 }
3960
3961 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
3962 sglist->scatterlist, sglist->num_sg,
3963 DMA_TO_DEVICE);
3964
3965 if (!sglist->num_dma_sg) {
3966 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3967 dev_err(&ioa_cfg->pdev->dev,
3968 "Failed to map microcode download buffer!\n");
3969 return -EIO;
3970 }
3971
3972 ioa_cfg->ucode_sglist = sglist;
3973 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3974 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3975 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3976
3977 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3978 ioa_cfg->ucode_sglist = NULL;
3979 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3980 return 0;
3981 }
3982
3983 /**
3984 * ipr_store_update_fw - Update the firmware on the adapter
3985 * @class_dev: device struct
3986 * @buf: buffer
3987 * @count: buffer size
3988 *
3989 * This function will update the firmware on the adapter.
3990 *
3991 * Return value:
3992 * count on success / other on failure
3993 **/
3994 static ssize_t ipr_store_update_fw(struct device *dev,
3995 struct device_attribute *attr,
3996 const char *buf, size_t count)
3997 {
3998 struct Scsi_Host *shost = class_to_shost(dev);
3999 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4000 struct ipr_ucode_image_header *image_hdr;
4001 const struct firmware *fw_entry;
4002 struct ipr_sglist *sglist;
4003 char fname[100];
4004 char *src;
4005 char *endline;
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 endline = strchr(fname, '\n');
4014 if (endline)
4015 *endline = '\0';
4016
4017 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4018 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4019 return -EIO;
4020 }
4021
4022 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4023
4024 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4025 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4026 sglist = ipr_alloc_ucode_buffer(dnld_size);
4027
4028 if (!sglist) {
4029 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4030 release_firmware(fw_entry);
4031 return -ENOMEM;
4032 }
4033
4034 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4035
4036 if (result) {
4037 dev_err(&ioa_cfg->pdev->dev,
4038 "Microcode buffer copy to DMA buffer failed\n");
4039 goto out;
4040 }
4041
4042 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4043
4044 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4045
4046 if (!result)
4047 result = count;
4048 out:
4049 ipr_free_ucode_buffer(sglist);
4050 release_firmware(fw_entry);
4051 return result;
4052 }
4053
4054 static struct device_attribute ipr_update_fw_attr = {
4055 .attr = {
4056 .name = "update_fw",
4057 .mode = S_IWUSR,
4058 },
4059 .store = ipr_store_update_fw
4060 };
4061
4062 /**
4063 * ipr_show_fw_type - Show the adapter's firmware type.
4064 * @dev: class device struct
4065 * @buf: buffer
4066 *
4067 * Return value:
4068 * number of bytes printed to buffer
4069 **/
4070 static ssize_t ipr_show_fw_type(struct device *dev,
4071 struct device_attribute *attr, char *buf)
4072 {
4073 struct Scsi_Host *shost = class_to_shost(dev);
4074 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4075 unsigned long lock_flags = 0;
4076 int len;
4077
4078 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4079 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4080 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4081 return len;
4082 }
4083
4084 static struct device_attribute ipr_ioa_fw_type_attr = {
4085 .attr = {
4086 .name = "fw_type",
4087 .mode = S_IRUGO,
4088 },
4089 .show = ipr_show_fw_type
4090 };
4091
4092 static struct device_attribute *ipr_ioa_attrs[] = {
4093 &ipr_fw_version_attr,
4094 &ipr_log_level_attr,
4095 &ipr_diagnostics_attr,
4096 &ipr_ioa_state_attr,
4097 &ipr_ioa_reset_attr,
4098 &ipr_update_fw_attr,
4099 &ipr_ioa_fw_type_attr,
4100 &ipr_iopoll_weight_attr,
4101 NULL,
4102 };
4103
4104 #ifdef CONFIG_SCSI_IPR_DUMP
4105 /**
4106 * ipr_read_dump - Dump the adapter
4107 * @filp: open sysfs file
4108 * @kobj: kobject struct
4109 * @bin_attr: bin_attribute struct
4110 * @buf: buffer
4111 * @off: offset
4112 * @count: buffer size
4113 *
4114 * Return value:
4115 * number of bytes printed to buffer
4116 **/
4117 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4118 struct bin_attribute *bin_attr,
4119 char *buf, loff_t off, size_t count)
4120 {
4121 struct device *cdev = container_of(kobj, struct device, kobj);
4122 struct Scsi_Host *shost = class_to_shost(cdev);
4123 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4124 struct ipr_dump *dump;
4125 unsigned long lock_flags = 0;
4126 char *src;
4127 int len, sdt_end;
4128 size_t rc = count;
4129
4130 if (!capable(CAP_SYS_ADMIN))
4131 return -EACCES;
4132
4133 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4134 dump = ioa_cfg->dump;
4135
4136 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4137 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4138 return 0;
4139 }
4140 kref_get(&dump->kref);
4141 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4142
4143 if (off > dump->driver_dump.hdr.len) {
4144 kref_put(&dump->kref, ipr_release_dump);
4145 return 0;
4146 }
4147
4148 if (off + count > dump->driver_dump.hdr.len) {
4149 count = dump->driver_dump.hdr.len - off;
4150 rc = count;
4151 }
4152
4153 if (count && off < sizeof(dump->driver_dump)) {
4154 if (off + count > sizeof(dump->driver_dump))
4155 len = sizeof(dump->driver_dump) - off;
4156 else
4157 len = count;
4158 src = (u8 *)&dump->driver_dump + off;
4159 memcpy(buf, src, len);
4160 buf += len;
4161 off += len;
4162 count -= len;
4163 }
4164
4165 off -= sizeof(dump->driver_dump);
4166
4167 if (ioa_cfg->sis64)
4168 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4169 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4170 sizeof(struct ipr_sdt_entry));
4171 else
4172 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4173 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4174
4175 if (count && off < sdt_end) {
4176 if (off + count > sdt_end)
4177 len = sdt_end - off;
4178 else
4179 len = count;
4180 src = (u8 *)&dump->ioa_dump + off;
4181 memcpy(buf, src, len);
4182 buf += len;
4183 off += len;
4184 count -= len;
4185 }
4186
4187 off -= sdt_end;
4188
4189 while (count) {
4190 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4191 len = PAGE_ALIGN(off) - off;
4192 else
4193 len = count;
4194 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4195 src += off & ~PAGE_MASK;
4196 memcpy(buf, src, len);
4197 buf += len;
4198 off += len;
4199 count -= len;
4200 }
4201
4202 kref_put(&dump->kref, ipr_release_dump);
4203 return rc;
4204 }
4205
4206 /**
4207 * ipr_alloc_dump - Prepare for adapter dump
4208 * @ioa_cfg: ioa config struct
4209 *
4210 * Return value:
4211 * 0 on success / other on failure
4212 **/
4213 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4214 {
4215 struct ipr_dump *dump;
4216 __be32 **ioa_data;
4217 unsigned long lock_flags = 0;
4218
4219 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4220
4221 if (!dump) {
4222 ipr_err("Dump memory allocation failed\n");
4223 return -ENOMEM;
4224 }
4225
4226 if (ioa_cfg->sis64)
4227 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4228 else
4229 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4230
4231 if (!ioa_data) {
4232 ipr_err("Dump memory allocation failed\n");
4233 kfree(dump);
4234 return -ENOMEM;
4235 }
4236
4237 dump->ioa_dump.ioa_data = ioa_data;
4238
4239 kref_init(&dump->kref);
4240 dump->ioa_cfg = ioa_cfg;
4241
4242 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4243
4244 if (INACTIVE != ioa_cfg->sdt_state) {
4245 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4246 vfree(dump->ioa_dump.ioa_data);
4247 kfree(dump);
4248 return 0;
4249 }
4250
4251 ioa_cfg->dump = dump;
4252 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4253 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4254 ioa_cfg->dump_taken = 1;
4255 schedule_work(&ioa_cfg->work_q);
4256 }
4257 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4258
4259 return 0;
4260 }
4261
4262 /**
4263 * ipr_free_dump - Free adapter dump memory
4264 * @ioa_cfg: ioa config struct
4265 *
4266 * Return value:
4267 * 0 on success / other on failure
4268 **/
4269 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4270 {
4271 struct ipr_dump *dump;
4272 unsigned long lock_flags = 0;
4273
4274 ENTER;
4275
4276 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4277 dump = ioa_cfg->dump;
4278 if (!dump) {
4279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4280 return 0;
4281 }
4282
4283 ioa_cfg->dump = NULL;
4284 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4285
4286 kref_put(&dump->kref, ipr_release_dump);
4287
4288 LEAVE;
4289 return 0;
4290 }
4291
4292 /**
4293 * ipr_write_dump - Setup dump state of adapter
4294 * @filp: open sysfs file
4295 * @kobj: kobject struct
4296 * @bin_attr: bin_attribute struct
4297 * @buf: buffer
4298 * @off: offset
4299 * @count: buffer size
4300 *
4301 * Return value:
4302 * number of bytes printed to buffer
4303 **/
4304 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4305 struct bin_attribute *bin_attr,
4306 char *buf, loff_t off, size_t count)
4307 {
4308 struct device *cdev = container_of(kobj, struct device, kobj);
4309 struct Scsi_Host *shost = class_to_shost(cdev);
4310 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4311 int rc;
4312
4313 if (!capable(CAP_SYS_ADMIN))
4314 return -EACCES;
4315
4316 if (buf[0] == '1')
4317 rc = ipr_alloc_dump(ioa_cfg);
4318 else if (buf[0] == '0')
4319 rc = ipr_free_dump(ioa_cfg);
4320 else
4321 return -EINVAL;
4322
4323 if (rc)
4324 return rc;
4325 else
4326 return count;
4327 }
4328
4329 static struct bin_attribute ipr_dump_attr = {
4330 .attr = {
4331 .name = "dump",
4332 .mode = S_IRUSR | S_IWUSR,
4333 },
4334 .size = 0,
4335 .read = ipr_read_dump,
4336 .write = ipr_write_dump
4337 };
4338 #else
4339 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4340 #endif
4341
4342 /**
4343 * ipr_change_queue_depth - Change the device's queue depth
4344 * @sdev: scsi device struct
4345 * @qdepth: depth to set
4346 * @reason: calling context
4347 *
4348 * Return value:
4349 * actual depth set
4350 **/
4351 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4352 {
4353 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4354 struct ipr_resource_entry *res;
4355 unsigned long lock_flags = 0;
4356
4357 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4358 res = (struct ipr_resource_entry *)sdev->hostdata;
4359
4360 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4361 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4362 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4363
4364 scsi_change_queue_depth(sdev, qdepth);
4365 return sdev->queue_depth;
4366 }
4367
4368 /**
4369 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4370 * @dev: device struct
4371 * @attr: device attribute structure
4372 * @buf: buffer
4373 *
4374 * Return value:
4375 * number of bytes printed to buffer
4376 **/
4377 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4378 {
4379 struct scsi_device *sdev = to_scsi_device(dev);
4380 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4381 struct ipr_resource_entry *res;
4382 unsigned long lock_flags = 0;
4383 ssize_t len = -ENXIO;
4384
4385 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4386 res = (struct ipr_resource_entry *)sdev->hostdata;
4387 if (res)
4388 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4389 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4390 return len;
4391 }
4392
4393 static struct device_attribute ipr_adapter_handle_attr = {
4394 .attr = {
4395 .name = "adapter_handle",
4396 .mode = S_IRUSR,
4397 },
4398 .show = ipr_show_adapter_handle
4399 };
4400
4401 /**
4402 * ipr_show_resource_path - Show the resource path or the resource address for
4403 * this device.
4404 * @dev: device struct
4405 * @attr: device attribute structure
4406 * @buf: buffer
4407 *
4408 * Return value:
4409 * number of bytes printed to buffer
4410 **/
4411 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4412 {
4413 struct scsi_device *sdev = to_scsi_device(dev);
4414 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4415 struct ipr_resource_entry *res;
4416 unsigned long lock_flags = 0;
4417 ssize_t len = -ENXIO;
4418 char buffer[IPR_MAX_RES_PATH_LENGTH];
4419
4420 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4421 res = (struct ipr_resource_entry *)sdev->hostdata;
4422 if (res && ioa_cfg->sis64)
4423 len = snprintf(buf, PAGE_SIZE, "%s\n",
4424 __ipr_format_res_path(res->res_path, buffer,
4425 sizeof(buffer)));
4426 else if (res)
4427 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4428 res->bus, res->target, res->lun);
4429
4430 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4431 return len;
4432 }
4433
4434 static struct device_attribute ipr_resource_path_attr = {
4435 .attr = {
4436 .name = "resource_path",
4437 .mode = S_IRUGO,
4438 },
4439 .show = ipr_show_resource_path
4440 };
4441
4442 /**
4443 * ipr_show_device_id - Show the device_id for this device.
4444 * @dev: device struct
4445 * @attr: device attribute structure
4446 * @buf: buffer
4447 *
4448 * Return value:
4449 * number of bytes printed to buffer
4450 **/
4451 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4452 {
4453 struct scsi_device *sdev = to_scsi_device(dev);
4454 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4455 struct ipr_resource_entry *res;
4456 unsigned long lock_flags = 0;
4457 ssize_t len = -ENXIO;
4458
4459 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4460 res = (struct ipr_resource_entry *)sdev->hostdata;
4461 if (res && ioa_cfg->sis64)
4462 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4463 else if (res)
4464 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4465
4466 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4467 return len;
4468 }
4469
4470 static struct device_attribute ipr_device_id_attr = {
4471 .attr = {
4472 .name = "device_id",
4473 .mode = S_IRUGO,
4474 },
4475 .show = ipr_show_device_id
4476 };
4477
4478 /**
4479 * ipr_show_resource_type - Show the resource type for this device.
4480 * @dev: device struct
4481 * @attr: device attribute structure
4482 * @buf: buffer
4483 *
4484 * Return value:
4485 * number of bytes printed to buffer
4486 **/
4487 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4488 {
4489 struct scsi_device *sdev = to_scsi_device(dev);
4490 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4491 struct ipr_resource_entry *res;
4492 unsigned long lock_flags = 0;
4493 ssize_t len = -ENXIO;
4494
4495 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4496 res = (struct ipr_resource_entry *)sdev->hostdata;
4497
4498 if (res)
4499 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4500
4501 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4502 return len;
4503 }
4504
4505 static struct device_attribute ipr_resource_type_attr = {
4506 .attr = {
4507 .name = "resource_type",
4508 .mode = S_IRUGO,
4509 },
4510 .show = ipr_show_resource_type
4511 };
4512
4513 /**
4514 * ipr_show_raw_mode - Show the adapter's raw mode
4515 * @dev: class device struct
4516 * @buf: buffer
4517 *
4518 * Return value:
4519 * number of bytes printed to buffer
4520 **/
4521 static ssize_t ipr_show_raw_mode(struct device *dev,
4522 struct device_attribute *attr, char *buf)
4523 {
4524 struct scsi_device *sdev = to_scsi_device(dev);
4525 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4526 struct ipr_resource_entry *res;
4527 unsigned long lock_flags = 0;
4528 ssize_t len;
4529
4530 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4531 res = (struct ipr_resource_entry *)sdev->hostdata;
4532 if (res)
4533 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4534 else
4535 len = -ENXIO;
4536 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4537 return len;
4538 }
4539
4540 /**
4541 * ipr_store_raw_mode - Change the adapter's raw mode
4542 * @dev: class device struct
4543 * @buf: buffer
4544 *
4545 * Return value:
4546 * number of bytes printed to buffer
4547 **/
4548 static ssize_t ipr_store_raw_mode(struct device *dev,
4549 struct device_attribute *attr,
4550 const char *buf, size_t count)
4551 {
4552 struct scsi_device *sdev = to_scsi_device(dev);
4553 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4554 struct ipr_resource_entry *res;
4555 unsigned long lock_flags = 0;
4556 ssize_t len;
4557
4558 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4559 res = (struct ipr_resource_entry *)sdev->hostdata;
4560 if (res) {
4561 if (ipr_is_af_dasd_device(res)) {
4562 res->raw_mode = simple_strtoul(buf, NULL, 10);
4563 len = strlen(buf);
4564 if (res->sdev)
4565 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4566 res->raw_mode ? "enabled" : "disabled");
4567 } else
4568 len = -EINVAL;
4569 } else
4570 len = -ENXIO;
4571 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4572 return len;
4573 }
4574
4575 static struct device_attribute ipr_raw_mode_attr = {
4576 .attr = {
4577 .name = "raw_mode",
4578 .mode = S_IRUGO | S_IWUSR,
4579 },
4580 .show = ipr_show_raw_mode,
4581 .store = ipr_store_raw_mode
4582 };
4583
4584 static struct device_attribute *ipr_dev_attrs[] = {
4585 &ipr_adapter_handle_attr,
4586 &ipr_resource_path_attr,
4587 &ipr_device_id_attr,
4588 &ipr_resource_type_attr,
4589 &ipr_raw_mode_attr,
4590 NULL,
4591 };
4592
4593 /**
4594 * ipr_biosparam - Return the HSC mapping
4595 * @sdev: scsi device struct
4596 * @block_device: block device pointer
4597 * @capacity: capacity of the device
4598 * @parm: Array containing returned HSC values.
4599 *
4600 * This function generates the HSC parms that fdisk uses.
4601 * We want to make sure we return something that places partitions
4602 * on 4k boundaries for best performance with the IOA.
4603 *
4604 * Return value:
4605 * 0 on success
4606 **/
4607 static int ipr_biosparam(struct scsi_device *sdev,
4608 struct block_device *block_device,
4609 sector_t capacity, int *parm)
4610 {
4611 int heads, sectors;
4612 sector_t cylinders;
4613
4614 heads = 128;
4615 sectors = 32;
4616
4617 cylinders = capacity;
4618 sector_div(cylinders, (128 * 32));
4619
4620 /* return result */
4621 parm[0] = heads;
4622 parm[1] = sectors;
4623 parm[2] = cylinders;
4624
4625 return 0;
4626 }
4627
4628 /**
4629 * ipr_find_starget - Find target based on bus/target.
4630 * @starget: scsi target struct
4631 *
4632 * Return value:
4633 * resource entry pointer if found / NULL if not found
4634 **/
4635 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4636 {
4637 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4638 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4639 struct ipr_resource_entry *res;
4640
4641 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4642 if ((res->bus == starget->channel) &&
4643 (res->target == starget->id)) {
4644 return res;
4645 }
4646 }
4647
4648 return NULL;
4649 }
4650
4651 static struct ata_port_info sata_port_info;
4652
4653 /**
4654 * ipr_target_alloc - Prepare for commands to a SCSI target
4655 * @starget: scsi target struct
4656 *
4657 * If the device is a SATA device, this function allocates an
4658 * ATA port with libata, else it does nothing.
4659 *
4660 * Return value:
4661 * 0 on success / non-0 on failure
4662 **/
4663 static int ipr_target_alloc(struct scsi_target *starget)
4664 {
4665 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4666 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4667 struct ipr_sata_port *sata_port;
4668 struct ata_port *ap;
4669 struct ipr_resource_entry *res;
4670 unsigned long lock_flags;
4671
4672 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4673 res = ipr_find_starget(starget);
4674 starget->hostdata = NULL;
4675
4676 if (res && ipr_is_gata(res)) {
4677 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4678 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4679 if (!sata_port)
4680 return -ENOMEM;
4681
4682 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4683 if (ap) {
4684 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4685 sata_port->ioa_cfg = ioa_cfg;
4686 sata_port->ap = ap;
4687 sata_port->res = res;
4688
4689 res->sata_port = sata_port;
4690 ap->private_data = sata_port;
4691 starget->hostdata = sata_port;
4692 } else {
4693 kfree(sata_port);
4694 return -ENOMEM;
4695 }
4696 }
4697 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4698
4699 return 0;
4700 }
4701
4702 /**
4703 * ipr_target_destroy - Destroy a SCSI target
4704 * @starget: scsi target struct
4705 *
4706 * If the device was a SATA device, this function frees the libata
4707 * ATA port, else it does nothing.
4708 *
4709 **/
4710 static void ipr_target_destroy(struct scsi_target *starget)
4711 {
4712 struct ipr_sata_port *sata_port = starget->hostdata;
4713 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4714 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4715
4716 if (ioa_cfg->sis64) {
4717 if (!ipr_find_starget(starget)) {
4718 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4719 clear_bit(starget->id, ioa_cfg->array_ids);
4720 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4721 clear_bit(starget->id, ioa_cfg->vset_ids);
4722 else if (starget->channel == 0)
4723 clear_bit(starget->id, ioa_cfg->target_ids);
4724 }
4725 }
4726
4727 if (sata_port) {
4728 starget->hostdata = NULL;
4729 ata_sas_port_destroy(sata_port->ap);
4730 kfree(sata_port);
4731 }
4732 }
4733
4734 /**
4735 * ipr_find_sdev - Find device based on bus/target/lun.
4736 * @sdev: scsi device struct
4737 *
4738 * Return value:
4739 * resource entry pointer if found / NULL if not found
4740 **/
4741 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4742 {
4743 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4744 struct ipr_resource_entry *res;
4745
4746 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4747 if ((res->bus == sdev->channel) &&
4748 (res->target == sdev->id) &&
4749 (res->lun == sdev->lun))
4750 return res;
4751 }
4752
4753 return NULL;
4754 }
4755
4756 /**
4757 * ipr_slave_destroy - Unconfigure a SCSI device
4758 * @sdev: scsi device struct
4759 *
4760 * Return value:
4761 * nothing
4762 **/
4763 static void ipr_slave_destroy(struct scsi_device *sdev)
4764 {
4765 struct ipr_resource_entry *res;
4766 struct ipr_ioa_cfg *ioa_cfg;
4767 unsigned long lock_flags = 0;
4768
4769 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4770
4771 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4772 res = (struct ipr_resource_entry *) sdev->hostdata;
4773 if (res) {
4774 if (res->sata_port)
4775 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4776 sdev->hostdata = NULL;
4777 res->sdev = NULL;
4778 res->sata_port = NULL;
4779 }
4780 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4781 }
4782
4783 /**
4784 * ipr_slave_configure - Configure a SCSI device
4785 * @sdev: scsi device struct
4786 *
4787 * This function configures the specified scsi device.
4788 *
4789 * Return value:
4790 * 0 on success
4791 **/
4792 static int ipr_slave_configure(struct scsi_device *sdev)
4793 {
4794 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4795 struct ipr_resource_entry *res;
4796 struct ata_port *ap = NULL;
4797 unsigned long lock_flags = 0;
4798 char buffer[IPR_MAX_RES_PATH_LENGTH];
4799
4800 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4801 res = sdev->hostdata;
4802 if (res) {
4803 if (ipr_is_af_dasd_device(res))
4804 sdev->type = TYPE_RAID;
4805 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4806 sdev->scsi_level = 4;
4807 sdev->no_uld_attach = 1;
4808 }
4809 if (ipr_is_vset_device(res)) {
4810 sdev->scsi_level = SCSI_SPC_3;
4811 blk_queue_rq_timeout(sdev->request_queue,
4812 IPR_VSET_RW_TIMEOUT);
4813 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4814 }
4815 if (ipr_is_gata(res) && res->sata_port)
4816 ap = res->sata_port->ap;
4817 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4818
4819 if (ap) {
4820 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4821 ata_sas_slave_configure(sdev, ap);
4822 }
4823
4824 if (ioa_cfg->sis64)
4825 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4826 ipr_format_res_path(ioa_cfg,
4827 res->res_path, buffer, sizeof(buffer)));
4828 return 0;
4829 }
4830 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4831 return 0;
4832 }
4833
4834 /**
4835 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4836 * @sdev: scsi device struct
4837 *
4838 * This function initializes an ATA port so that future commands
4839 * sent through queuecommand will work.
4840 *
4841 * Return value:
4842 * 0 on success
4843 **/
4844 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4845 {
4846 struct ipr_sata_port *sata_port = NULL;
4847 int rc = -ENXIO;
4848
4849 ENTER;
4850 if (sdev->sdev_target)
4851 sata_port = sdev->sdev_target->hostdata;
4852 if (sata_port) {
4853 rc = ata_sas_port_init(sata_port->ap);
4854 if (rc == 0)
4855 rc = ata_sas_sync_probe(sata_port->ap);
4856 }
4857
4858 if (rc)
4859 ipr_slave_destroy(sdev);
4860
4861 LEAVE;
4862 return rc;
4863 }
4864
4865 /**
4866 * ipr_slave_alloc - Prepare for commands to a device.
4867 * @sdev: scsi device struct
4868 *
4869 * This function saves a pointer to the resource entry
4870 * in the scsi device struct if the device exists. We
4871 * can then use this pointer in ipr_queuecommand when
4872 * handling new commands.
4873 *
4874 * Return value:
4875 * 0 on success / -ENXIO if device does not exist
4876 **/
4877 static int ipr_slave_alloc(struct scsi_device *sdev)
4878 {
4879 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4880 struct ipr_resource_entry *res;
4881 unsigned long lock_flags;
4882 int rc = -ENXIO;
4883
4884 sdev->hostdata = NULL;
4885
4886 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4887
4888 res = ipr_find_sdev(sdev);
4889 if (res) {
4890 res->sdev = sdev;
4891 res->add_to_ml = 0;
4892 res->in_erp = 0;
4893 sdev->hostdata = res;
4894 if (!ipr_is_naca_model(res))
4895 res->needs_sync_complete = 1;
4896 rc = 0;
4897 if (ipr_is_gata(res)) {
4898 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4899 return ipr_ata_slave_alloc(sdev);
4900 }
4901 }
4902
4903 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4904
4905 return rc;
4906 }
4907
4908 /**
4909 * ipr_match_lun - Match function for specified LUN
4910 * @ipr_cmd: ipr command struct
4911 * @device: device to match (sdev)
4912 *
4913 * Returns:
4914 * 1 if command matches sdev / 0 if command does not match sdev
4915 **/
4916 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
4917 {
4918 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
4919 return 1;
4920 return 0;
4921 }
4922
4923 /**
4924 * ipr_wait_for_ops - Wait for matching commands to complete
4925 * @ipr_cmd: ipr command struct
4926 * @device: device to match (sdev)
4927 * @match: match function to use
4928 *
4929 * Returns:
4930 * SUCCESS / FAILED
4931 **/
4932 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
4933 int (*match)(struct ipr_cmnd *, void *))
4934 {
4935 struct ipr_cmnd *ipr_cmd;
4936 int wait;
4937 unsigned long flags;
4938 struct ipr_hrr_queue *hrrq;
4939 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
4940 DECLARE_COMPLETION_ONSTACK(comp);
4941
4942 ENTER;
4943 do {
4944 wait = 0;
4945
4946 for_each_hrrq(hrrq, ioa_cfg) {
4947 spin_lock_irqsave(hrrq->lock, flags);
4948 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4949 if (match(ipr_cmd, device)) {
4950 ipr_cmd->eh_comp = &comp;
4951 wait++;
4952 }
4953 }
4954 spin_unlock_irqrestore(hrrq->lock, flags);
4955 }
4956
4957 if (wait) {
4958 timeout = wait_for_completion_timeout(&comp, timeout);
4959
4960 if (!timeout) {
4961 wait = 0;
4962
4963 for_each_hrrq(hrrq, ioa_cfg) {
4964 spin_lock_irqsave(hrrq->lock, flags);
4965 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4966 if (match(ipr_cmd, device)) {
4967 ipr_cmd->eh_comp = NULL;
4968 wait++;
4969 }
4970 }
4971 spin_unlock_irqrestore(hrrq->lock, flags);
4972 }
4973
4974 if (wait)
4975 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
4976 LEAVE;
4977 return wait ? FAILED : SUCCESS;
4978 }
4979 }
4980 } while (wait);
4981
4982 LEAVE;
4983 return SUCCESS;
4984 }
4985
4986 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4987 {
4988 struct ipr_ioa_cfg *ioa_cfg;
4989 unsigned long lock_flags = 0;
4990 int rc = SUCCESS;
4991
4992 ENTER;
4993 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4994 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4995
4996 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4997 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4998 dev_err(&ioa_cfg->pdev->dev,
4999 "Adapter being reset as a result of error recovery.\n");
5000
5001 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5002 ioa_cfg->sdt_state = GET_DUMP;
5003 }
5004
5005 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5006 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5007 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5008
5009 /* If we got hit with a host reset while we were already resetting
5010 the adapter for some reason, and the reset failed. */
5011 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5012 ipr_trace;
5013 rc = FAILED;
5014 }
5015
5016 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5017 LEAVE;
5018 return rc;
5019 }
5020
5021 /**
5022 * ipr_device_reset - Reset the device
5023 * @ioa_cfg: ioa config struct
5024 * @res: resource entry struct
5025 *
5026 * This function issues a device reset to the affected device.
5027 * If the device is a SCSI device, a LUN reset will be sent
5028 * to the device first. If that does not work, a target reset
5029 * will be sent. If the device is a SATA device, a PHY reset will
5030 * be sent.
5031 *
5032 * Return value:
5033 * 0 on success / non-zero on failure
5034 **/
5035 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5036 struct ipr_resource_entry *res)
5037 {
5038 struct ipr_cmnd *ipr_cmd;
5039 struct ipr_ioarcb *ioarcb;
5040 struct ipr_cmd_pkt *cmd_pkt;
5041 struct ipr_ioarcb_ata_regs *regs;
5042 u32 ioasc;
5043
5044 ENTER;
5045 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5046 ioarcb = &ipr_cmd->ioarcb;
5047 cmd_pkt = &ioarcb->cmd_pkt;
5048
5049 if (ipr_cmd->ioa_cfg->sis64) {
5050 regs = &ipr_cmd->i.ata_ioadl.regs;
5051 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5052 } else
5053 regs = &ioarcb->u.add_data.u.regs;
5054
5055 ioarcb->res_handle = res->res_handle;
5056 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5057 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5058 if (ipr_is_gata(res)) {
5059 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5060 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5061 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5062 }
5063
5064 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5065 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5066 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5067 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5068 if (ipr_cmd->ioa_cfg->sis64)
5069 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5070 sizeof(struct ipr_ioasa_gata));
5071 else
5072 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5073 sizeof(struct ipr_ioasa_gata));
5074 }
5075
5076 LEAVE;
5077 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5078 }
5079
5080 /**
5081 * ipr_sata_reset - Reset the SATA port
5082 * @link: SATA link to reset
5083 * @classes: class of the attached device
5084 *
5085 * This function issues a SATA phy reset to the affected ATA link.
5086 *
5087 * Return value:
5088 * 0 on success / non-zero on failure
5089 **/
5090 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5091 unsigned long deadline)
5092 {
5093 struct ipr_sata_port *sata_port = link->ap->private_data;
5094 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5095 struct ipr_resource_entry *res;
5096 unsigned long lock_flags = 0;
5097 int rc = -ENXIO;
5098
5099 ENTER;
5100 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5101 while (ioa_cfg->in_reset_reload) {
5102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5103 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5104 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5105 }
5106
5107 res = sata_port->res;
5108 if (res) {
5109 rc = ipr_device_reset(ioa_cfg, res);
5110 *classes = res->ata_class;
5111 }
5112
5113 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5114 LEAVE;
5115 return rc;
5116 }
5117
5118 /**
5119 * ipr_eh_dev_reset - Reset the device
5120 * @scsi_cmd: scsi command struct
5121 *
5122 * This function issues a device reset to the affected device.
5123 * A LUN reset will be sent to the device first. If that does
5124 * not work, a target reset will be sent.
5125 *
5126 * Return value:
5127 * SUCCESS / FAILED
5128 **/
5129 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5130 {
5131 struct ipr_cmnd *ipr_cmd;
5132 struct ipr_ioa_cfg *ioa_cfg;
5133 struct ipr_resource_entry *res;
5134 struct ata_port *ap;
5135 int rc = 0;
5136 struct ipr_hrr_queue *hrrq;
5137
5138 ENTER;
5139 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5140 res = scsi_cmd->device->hostdata;
5141
5142 if (!res)
5143 return FAILED;
5144
5145 /*
5146 * If we are currently going through reset/reload, return failed. This will force the
5147 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5148 * reset to complete
5149 */
5150 if (ioa_cfg->in_reset_reload)
5151 return FAILED;
5152 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5153 return FAILED;
5154
5155 for_each_hrrq(hrrq, ioa_cfg) {
5156 spin_lock(&hrrq->_lock);
5157 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5158 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5159 if (ipr_cmd->scsi_cmd)
5160 ipr_cmd->done = ipr_scsi_eh_done;
5161 if (ipr_cmd->qc)
5162 ipr_cmd->done = ipr_sata_eh_done;
5163 if (ipr_cmd->qc &&
5164 !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5165 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5166 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5167 }
5168 }
5169 }
5170 spin_unlock(&hrrq->_lock);
5171 }
5172 res->resetting_device = 1;
5173 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5174
5175 if (ipr_is_gata(res) && res->sata_port) {
5176 ap = res->sata_port->ap;
5177 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5178 ata_std_error_handler(ap);
5179 spin_lock_irq(scsi_cmd->device->host->host_lock);
5180
5181 for_each_hrrq(hrrq, ioa_cfg) {
5182 spin_lock(&hrrq->_lock);
5183 list_for_each_entry(ipr_cmd,
5184 &hrrq->hrrq_pending_q, queue) {
5185 if (ipr_cmd->ioarcb.res_handle ==
5186 res->res_handle) {
5187 rc = -EIO;
5188 break;
5189 }
5190 }
5191 spin_unlock(&hrrq->_lock);
5192 }
5193 } else
5194 rc = ipr_device_reset(ioa_cfg, res);
5195 res->resetting_device = 0;
5196 res->reset_occurred = 1;
5197
5198 LEAVE;
5199 return rc ? FAILED : SUCCESS;
5200 }
5201
5202 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5203 {
5204 int rc;
5205 struct ipr_ioa_cfg *ioa_cfg;
5206
5207 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5208
5209 spin_lock_irq(cmd->device->host->host_lock);
5210 rc = __ipr_eh_dev_reset(cmd);
5211 spin_unlock_irq(cmd->device->host->host_lock);
5212
5213 if (rc == SUCCESS)
5214 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5215
5216 return rc;
5217 }
5218
5219 /**
5220 * ipr_bus_reset_done - Op done function for bus reset.
5221 * @ipr_cmd: ipr command struct
5222 *
5223 * This function is the op done function for a bus reset
5224 *
5225 * Return value:
5226 * none
5227 **/
5228 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5229 {
5230 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5231 struct ipr_resource_entry *res;
5232
5233 ENTER;
5234 if (!ioa_cfg->sis64)
5235 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5236 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5237 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5238 break;
5239 }
5240 }
5241
5242 /*
5243 * If abort has not completed, indicate the reset has, else call the
5244 * abort's done function to wake the sleeping eh thread
5245 */
5246 if (ipr_cmd->sibling->sibling)
5247 ipr_cmd->sibling->sibling = NULL;
5248 else
5249 ipr_cmd->sibling->done(ipr_cmd->sibling);
5250
5251 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5252 LEAVE;
5253 }
5254
5255 /**
5256 * ipr_abort_timeout - An abort task has timed out
5257 * @ipr_cmd: ipr command struct
5258 *
5259 * This function handles when an abort task times out. If this
5260 * happens we issue a bus reset since we have resources tied
5261 * up that must be freed before returning to the midlayer.
5262 *
5263 * Return value:
5264 * none
5265 **/
5266 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5267 {
5268 struct ipr_cmnd *reset_cmd;
5269 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5270 struct ipr_cmd_pkt *cmd_pkt;
5271 unsigned long lock_flags = 0;
5272
5273 ENTER;
5274 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5275 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5276 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5277 return;
5278 }
5279
5280 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5281 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5282 ipr_cmd->sibling = reset_cmd;
5283 reset_cmd->sibling = ipr_cmd;
5284 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5285 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5286 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5287 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5288 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5289
5290 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5292 LEAVE;
5293 }
5294
5295 /**
5296 * ipr_cancel_op - Cancel specified op
5297 * @scsi_cmd: scsi command struct
5298 *
5299 * This function cancels specified op.
5300 *
5301 * Return value:
5302 * SUCCESS / FAILED
5303 **/
5304 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5305 {
5306 struct ipr_cmnd *ipr_cmd;
5307 struct ipr_ioa_cfg *ioa_cfg;
5308 struct ipr_resource_entry *res;
5309 struct ipr_cmd_pkt *cmd_pkt;
5310 u32 ioasc, int_reg;
5311 int op_found = 0;
5312 struct ipr_hrr_queue *hrrq;
5313
5314 ENTER;
5315 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5316 res = scsi_cmd->device->hostdata;
5317
5318 /* If we are currently going through reset/reload, return failed.
5319 * This will force the mid-layer to call ipr_eh_host_reset,
5320 * which will then go to sleep and wait for the reset to complete
5321 */
5322 if (ioa_cfg->in_reset_reload ||
5323 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5324 return FAILED;
5325 if (!res)
5326 return FAILED;
5327
5328 /*
5329 * If we are aborting a timed out op, chances are that the timeout was caused
5330 * by a still not detected EEH error. In such cases, reading a register will
5331 * trigger the EEH recovery infrastructure.
5332 */
5333 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5334
5335 if (!ipr_is_gscsi(res))
5336 return FAILED;
5337
5338 for_each_hrrq(hrrq, ioa_cfg) {
5339 spin_lock(&hrrq->_lock);
5340 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5341 if (ipr_cmd->scsi_cmd == scsi_cmd) {
5342 ipr_cmd->done = ipr_scsi_eh_done;
5343 op_found = 1;
5344 break;
5345 }
5346 }
5347 spin_unlock(&hrrq->_lock);
5348 }
5349
5350 if (!op_found)
5351 return SUCCESS;
5352
5353 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5354 ipr_cmd->ioarcb.res_handle = res->res_handle;
5355 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5356 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5357 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5358 ipr_cmd->u.sdev = scsi_cmd->device;
5359
5360 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5361 scsi_cmd->cmnd[0]);
5362 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5363 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5364
5365 /*
5366 * If the abort task timed out and we sent a bus reset, we will get
5367 * one the following responses to the abort
5368 */
5369 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5370 ioasc = 0;
5371 ipr_trace;
5372 }
5373
5374 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5375 if (!ipr_is_naca_model(res))
5376 res->needs_sync_complete = 1;
5377
5378 LEAVE;
5379 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5380 }
5381
5382 /**
5383 * ipr_eh_abort - Abort a single op
5384 * @scsi_cmd: scsi command struct
5385 *
5386 * Return value:
5387 * 0 if scan in progress / 1 if scan is complete
5388 **/
5389 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5390 {
5391 unsigned long lock_flags;
5392 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5393 int rc = 0;
5394
5395 spin_lock_irqsave(shost->host_lock, lock_flags);
5396 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5397 rc = 1;
5398 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5399 rc = 1;
5400 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5401 return rc;
5402 }
5403
5404 /**
5405 * ipr_eh_host_reset - Reset the host adapter
5406 * @scsi_cmd: scsi command struct
5407 *
5408 * Return value:
5409 * SUCCESS / FAILED
5410 **/
5411 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5412 {
5413 unsigned long flags;
5414 int rc;
5415 struct ipr_ioa_cfg *ioa_cfg;
5416
5417 ENTER;
5418
5419 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5420
5421 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5422 rc = ipr_cancel_op(scsi_cmd);
5423 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5424
5425 if (rc == SUCCESS)
5426 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5427 LEAVE;
5428 return rc;
5429 }
5430
5431 /**
5432 * ipr_handle_other_interrupt - Handle "other" interrupts
5433 * @ioa_cfg: ioa config struct
5434 * @int_reg: interrupt register
5435 *
5436 * Return value:
5437 * IRQ_NONE / IRQ_HANDLED
5438 **/
5439 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5440 u32 int_reg)
5441 {
5442 irqreturn_t rc = IRQ_HANDLED;
5443 u32 int_mask_reg;
5444
5445 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5446 int_reg &= ~int_mask_reg;
5447
5448 /* If an interrupt on the adapter did not occur, ignore it.
5449 * Or in the case of SIS 64, check for a stage change interrupt.
5450 */
5451 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5452 if (ioa_cfg->sis64) {
5453 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5454 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5455 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5456
5457 /* clear stage change */
5458 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5459 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5460 list_del(&ioa_cfg->reset_cmd->queue);
5461 del_timer(&ioa_cfg->reset_cmd->timer);
5462 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5463 return IRQ_HANDLED;
5464 }
5465 }
5466
5467 return IRQ_NONE;
5468 }
5469
5470 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5471 /* Mask the interrupt */
5472 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5473 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5474
5475 list_del(&ioa_cfg->reset_cmd->queue);
5476 del_timer(&ioa_cfg->reset_cmd->timer);
5477 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5478 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5479 if (ioa_cfg->clear_isr) {
5480 if (ipr_debug && printk_ratelimit())
5481 dev_err(&ioa_cfg->pdev->dev,
5482 "Spurious interrupt detected. 0x%08X\n", int_reg);
5483 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5484 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5485 return IRQ_NONE;
5486 }
5487 } else {
5488 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5489 ioa_cfg->ioa_unit_checked = 1;
5490 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5491 dev_err(&ioa_cfg->pdev->dev,
5492 "No Host RRQ. 0x%08X\n", int_reg);
5493 else
5494 dev_err(&ioa_cfg->pdev->dev,
5495 "Permanent IOA failure. 0x%08X\n", int_reg);
5496
5497 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5498 ioa_cfg->sdt_state = GET_DUMP;
5499
5500 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5501 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5502 }
5503
5504 return rc;
5505 }
5506
5507 /**
5508 * ipr_isr_eh - Interrupt service routine error handler
5509 * @ioa_cfg: ioa config struct
5510 * @msg: message to log
5511 *
5512 * Return value:
5513 * none
5514 **/
5515 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5516 {
5517 ioa_cfg->errors_logged++;
5518 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5519
5520 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5521 ioa_cfg->sdt_state = GET_DUMP;
5522
5523 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5524 }
5525
5526 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5527 struct list_head *doneq)
5528 {
5529 u32 ioasc;
5530 u16 cmd_index;
5531 struct ipr_cmnd *ipr_cmd;
5532 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5533 int num_hrrq = 0;
5534
5535 /* If interrupts are disabled, ignore the interrupt */
5536 if (!hrr_queue->allow_interrupts)
5537 return 0;
5538
5539 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5540 hrr_queue->toggle_bit) {
5541
5542 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5543 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5544 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5545
5546 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5547 cmd_index < hrr_queue->min_cmd_id)) {
5548 ipr_isr_eh(ioa_cfg,
5549 "Invalid response handle from IOA: ",
5550 cmd_index);
5551 break;
5552 }
5553
5554 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5555 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5556
5557 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5558
5559 list_move_tail(&ipr_cmd->queue, doneq);
5560
5561 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5562 hrr_queue->hrrq_curr++;
5563 } else {
5564 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5565 hrr_queue->toggle_bit ^= 1u;
5566 }
5567 num_hrrq++;
5568 if (budget > 0 && num_hrrq >= budget)
5569 break;
5570 }
5571
5572 return num_hrrq;
5573 }
5574
5575 static int ipr_iopoll(struct irq_poll *iop, int budget)
5576 {
5577 struct ipr_ioa_cfg *ioa_cfg;
5578 struct ipr_hrr_queue *hrrq;
5579 struct ipr_cmnd *ipr_cmd, *temp;
5580 unsigned long hrrq_flags;
5581 int completed_ops;
5582 LIST_HEAD(doneq);
5583
5584 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5585 ioa_cfg = hrrq->ioa_cfg;
5586
5587 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5588 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5589
5590 if (completed_ops < budget)
5591 irq_poll_complete(iop);
5592 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5593
5594 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5595 list_del(&ipr_cmd->queue);
5596 del_timer(&ipr_cmd->timer);
5597 ipr_cmd->fast_done(ipr_cmd);
5598 }
5599
5600 return completed_ops;
5601 }
5602
5603 /**
5604 * ipr_isr - Interrupt service routine
5605 * @irq: irq number
5606 * @devp: pointer to ioa config struct
5607 *
5608 * Return value:
5609 * IRQ_NONE / IRQ_HANDLED
5610 **/
5611 static irqreturn_t ipr_isr(int irq, void *devp)
5612 {
5613 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5614 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5615 unsigned long hrrq_flags = 0;
5616 u32 int_reg = 0;
5617 int num_hrrq = 0;
5618 int irq_none = 0;
5619 struct ipr_cmnd *ipr_cmd, *temp;
5620 irqreturn_t rc = IRQ_NONE;
5621 LIST_HEAD(doneq);
5622
5623 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5624 /* If interrupts are disabled, ignore the interrupt */
5625 if (!hrrq->allow_interrupts) {
5626 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5627 return IRQ_NONE;
5628 }
5629
5630 while (1) {
5631 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5632 rc = IRQ_HANDLED;
5633
5634 if (!ioa_cfg->clear_isr)
5635 break;
5636
5637 /* Clear the PCI interrupt */
5638 num_hrrq = 0;
5639 do {
5640 writel(IPR_PCII_HRRQ_UPDATED,
5641 ioa_cfg->regs.clr_interrupt_reg32);
5642 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5643 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5644 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5645
5646 } else if (rc == IRQ_NONE && irq_none == 0) {
5647 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5648 irq_none++;
5649 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5650 int_reg & IPR_PCII_HRRQ_UPDATED) {
5651 ipr_isr_eh(ioa_cfg,
5652 "Error clearing HRRQ: ", num_hrrq);
5653 rc = IRQ_HANDLED;
5654 break;
5655 } else
5656 break;
5657 }
5658
5659 if (unlikely(rc == IRQ_NONE))
5660 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5661
5662 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5663 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5664 list_del(&ipr_cmd->queue);
5665 del_timer(&ipr_cmd->timer);
5666 ipr_cmd->fast_done(ipr_cmd);
5667 }
5668 return rc;
5669 }
5670
5671 /**
5672 * ipr_isr_mhrrq - Interrupt service routine
5673 * @irq: irq number
5674 * @devp: pointer to ioa config struct
5675 *
5676 * Return value:
5677 * IRQ_NONE / IRQ_HANDLED
5678 **/
5679 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5680 {
5681 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5682 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5683 unsigned long hrrq_flags = 0;
5684 struct ipr_cmnd *ipr_cmd, *temp;
5685 irqreturn_t rc = IRQ_NONE;
5686 LIST_HEAD(doneq);
5687
5688 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5689
5690 /* If interrupts are disabled, ignore the interrupt */
5691 if (!hrrq->allow_interrupts) {
5692 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5693 return IRQ_NONE;
5694 }
5695
5696 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5697 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5698 hrrq->toggle_bit) {
5699 irq_poll_sched(&hrrq->iopoll);
5700 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5701 return IRQ_HANDLED;
5702 }
5703 } else {
5704 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5705 hrrq->toggle_bit)
5706
5707 if (ipr_process_hrrq(hrrq, -1, &doneq))
5708 rc = IRQ_HANDLED;
5709 }
5710
5711 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5712
5713 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5714 list_del(&ipr_cmd->queue);
5715 del_timer(&ipr_cmd->timer);
5716 ipr_cmd->fast_done(ipr_cmd);
5717 }
5718 return rc;
5719 }
5720
5721 /**
5722 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5723 * @ioa_cfg: ioa config struct
5724 * @ipr_cmd: ipr command struct
5725 *
5726 * Return value:
5727 * 0 on success / -1 on failure
5728 **/
5729 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5730 struct ipr_cmnd *ipr_cmd)
5731 {
5732 int i, nseg;
5733 struct scatterlist *sg;
5734 u32 length;
5735 u32 ioadl_flags = 0;
5736 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5737 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5738 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5739
5740 length = scsi_bufflen(scsi_cmd);
5741 if (!length)
5742 return 0;
5743
5744 nseg = scsi_dma_map(scsi_cmd);
5745 if (nseg < 0) {
5746 if (printk_ratelimit())
5747 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5748 return -1;
5749 }
5750
5751 ipr_cmd->dma_use_sg = nseg;
5752
5753 ioarcb->data_transfer_length = cpu_to_be32(length);
5754 ioarcb->ioadl_len =
5755 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5756
5757 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5758 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5759 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5760 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5761 ioadl_flags = IPR_IOADL_FLAGS_READ;
5762
5763 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5764 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5765 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5766 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5767 }
5768
5769 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5770 return 0;
5771 }
5772
5773 /**
5774 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5775 * @ioa_cfg: ioa config struct
5776 * @ipr_cmd: ipr command struct
5777 *
5778 * Return value:
5779 * 0 on success / -1 on failure
5780 **/
5781 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5782 struct ipr_cmnd *ipr_cmd)
5783 {
5784 int i, nseg;
5785 struct scatterlist *sg;
5786 u32 length;
5787 u32 ioadl_flags = 0;
5788 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5789 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5790 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5791
5792 length = scsi_bufflen(scsi_cmd);
5793 if (!length)
5794 return 0;
5795
5796 nseg = scsi_dma_map(scsi_cmd);
5797 if (nseg < 0) {
5798 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5799 return -1;
5800 }
5801
5802 ipr_cmd->dma_use_sg = nseg;
5803
5804 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5805 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5806 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5807 ioarcb->data_transfer_length = cpu_to_be32(length);
5808 ioarcb->ioadl_len =
5809 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5810 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5811 ioadl_flags = IPR_IOADL_FLAGS_READ;
5812 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5813 ioarcb->read_ioadl_len =
5814 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5815 }
5816
5817 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5818 ioadl = ioarcb->u.add_data.u.ioadl;
5819 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5820 offsetof(struct ipr_ioarcb, u.add_data));
5821 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5822 }
5823
5824 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5825 ioadl[i].flags_and_data_len =
5826 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5827 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5828 }
5829
5830 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5831 return 0;
5832 }
5833
5834 /**
5835 * ipr_erp_done - Process completion of ERP for a device
5836 * @ipr_cmd: ipr command struct
5837 *
5838 * This function copies the sense buffer into the scsi_cmd
5839 * struct and pushes the scsi_done function.
5840 *
5841 * Return value:
5842 * nothing
5843 **/
5844 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5845 {
5846 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5847 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5848 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5849
5850 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5851 scsi_cmd->result |= (DID_ERROR << 16);
5852 scmd_printk(KERN_ERR, scsi_cmd,
5853 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5854 } else {
5855 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5856 SCSI_SENSE_BUFFERSIZE);
5857 }
5858
5859 if (res) {
5860 if (!ipr_is_naca_model(res))
5861 res->needs_sync_complete = 1;
5862 res->in_erp = 0;
5863 }
5864 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5865 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5866 scsi_cmd->scsi_done(scsi_cmd);
5867 }
5868
5869 /**
5870 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5871 * @ipr_cmd: ipr command struct
5872 *
5873 * Return value:
5874 * none
5875 **/
5876 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5877 {
5878 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5879 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5880 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5881
5882 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5883 ioarcb->data_transfer_length = 0;
5884 ioarcb->read_data_transfer_length = 0;
5885 ioarcb->ioadl_len = 0;
5886 ioarcb->read_ioadl_len = 0;
5887 ioasa->hdr.ioasc = 0;
5888 ioasa->hdr.residual_data_len = 0;
5889
5890 if (ipr_cmd->ioa_cfg->sis64)
5891 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5892 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5893 else {
5894 ioarcb->write_ioadl_addr =
5895 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5896 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5897 }
5898 }
5899
5900 /**
5901 * ipr_erp_request_sense - Send request sense to a device
5902 * @ipr_cmd: ipr command struct
5903 *
5904 * This function sends a request sense to a device as a result
5905 * of a check condition.
5906 *
5907 * Return value:
5908 * nothing
5909 **/
5910 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5911 {
5912 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5913 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5914
5915 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5916 ipr_erp_done(ipr_cmd);
5917 return;
5918 }
5919
5920 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5921
5922 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5923 cmd_pkt->cdb[0] = REQUEST_SENSE;
5924 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5925 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5926 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5927 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5928
5929 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5930 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5931
5932 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5933 IPR_REQUEST_SENSE_TIMEOUT * 2);
5934 }
5935
5936 /**
5937 * ipr_erp_cancel_all - Send cancel all to a device
5938 * @ipr_cmd: ipr command struct
5939 *
5940 * This function sends a cancel all to a device to clear the
5941 * queue. If we are running TCQ on the device, QERR is set to 1,
5942 * which means all outstanding ops have been dropped on the floor.
5943 * Cancel all will return them to us.
5944 *
5945 * Return value:
5946 * nothing
5947 **/
5948 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5949 {
5950 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5951 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5952 struct ipr_cmd_pkt *cmd_pkt;
5953
5954 res->in_erp = 1;
5955
5956 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5957
5958 if (!scsi_cmd->device->simple_tags) {
5959 ipr_erp_request_sense(ipr_cmd);
5960 return;
5961 }
5962
5963 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5964 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5965 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5966
5967 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5968 IPR_CANCEL_ALL_TIMEOUT);
5969 }
5970
5971 /**
5972 * ipr_dump_ioasa - Dump contents of IOASA
5973 * @ioa_cfg: ioa config struct
5974 * @ipr_cmd: ipr command struct
5975 * @res: resource entry struct
5976 *
5977 * This function is invoked by the interrupt handler when ops
5978 * fail. It will log the IOASA if appropriate. Only called
5979 * for GPDD ops.
5980 *
5981 * Return value:
5982 * none
5983 **/
5984 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5985 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5986 {
5987 int i;
5988 u16 data_len;
5989 u32 ioasc, fd_ioasc;
5990 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5991 __be32 *ioasa_data = (__be32 *)ioasa;
5992 int error_index;
5993
5994 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5995 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5996
5997 if (0 == ioasc)
5998 return;
5999
6000 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
6001 return;
6002
6003 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6004 error_index = ipr_get_error(fd_ioasc);
6005 else
6006 error_index = ipr_get_error(ioasc);
6007
6008 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6009 /* Don't log an error if the IOA already logged one */
6010 if (ioasa->hdr.ilid != 0)
6011 return;
6012
6013 if (!ipr_is_gscsi(res))
6014 return;
6015
6016 if (ipr_error_table[error_index].log_ioasa == 0)
6017 return;
6018 }
6019
6020 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6021
6022 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6023 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6024 data_len = sizeof(struct ipr_ioasa64);
6025 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6026 data_len = sizeof(struct ipr_ioasa);
6027
6028 ipr_err("IOASA Dump:\n");
6029
6030 for (i = 0; i < data_len / 4; i += 4) {
6031 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6032 be32_to_cpu(ioasa_data[i]),
6033 be32_to_cpu(ioasa_data[i+1]),
6034 be32_to_cpu(ioasa_data[i+2]),
6035 be32_to_cpu(ioasa_data[i+3]));
6036 }
6037 }
6038
6039 /**
6040 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6041 * @ioasa: IOASA
6042 * @sense_buf: sense data buffer
6043 *
6044 * Return value:
6045 * none
6046 **/
6047 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6048 {
6049 u32 failing_lba;
6050 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6051 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6052 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6053 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6054
6055 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6056
6057 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6058 return;
6059
6060 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6061
6062 if (ipr_is_vset_device(res) &&
6063 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6064 ioasa->u.vset.failing_lba_hi != 0) {
6065 sense_buf[0] = 0x72;
6066 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6067 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6068 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6069
6070 sense_buf[7] = 12;
6071 sense_buf[8] = 0;
6072 sense_buf[9] = 0x0A;
6073 sense_buf[10] = 0x80;
6074
6075 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6076
6077 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6078 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6079 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6080 sense_buf[15] = failing_lba & 0x000000ff;
6081
6082 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6083
6084 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6085 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6086 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6087 sense_buf[19] = failing_lba & 0x000000ff;
6088 } else {
6089 sense_buf[0] = 0x70;
6090 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6091 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6092 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6093
6094 /* Illegal request */
6095 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6096 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6097 sense_buf[7] = 10; /* additional length */
6098
6099 /* IOARCB was in error */
6100 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6101 sense_buf[15] = 0xC0;
6102 else /* Parameter data was invalid */
6103 sense_buf[15] = 0x80;
6104
6105 sense_buf[16] =
6106 ((IPR_FIELD_POINTER_MASK &
6107 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6108 sense_buf[17] =
6109 (IPR_FIELD_POINTER_MASK &
6110 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6111 } else {
6112 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6113 if (ipr_is_vset_device(res))
6114 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6115 else
6116 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6117
6118 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6119 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6120 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6121 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6122 sense_buf[6] = failing_lba & 0x000000ff;
6123 }
6124
6125 sense_buf[7] = 6; /* additional length */
6126 }
6127 }
6128 }
6129
6130 /**
6131 * ipr_get_autosense - Copy autosense data to sense buffer
6132 * @ipr_cmd: ipr command struct
6133 *
6134 * This function copies the autosense buffer to the buffer
6135 * in the scsi_cmd, if there is autosense available.
6136 *
6137 * Return value:
6138 * 1 if autosense was available / 0 if not
6139 **/
6140 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6141 {
6142 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6143 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6144
6145 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6146 return 0;
6147
6148 if (ipr_cmd->ioa_cfg->sis64)
6149 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6150 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6151 SCSI_SENSE_BUFFERSIZE));
6152 else
6153 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6154 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6155 SCSI_SENSE_BUFFERSIZE));
6156 return 1;
6157 }
6158
6159 /**
6160 * ipr_erp_start - Process an error response for a SCSI op
6161 * @ioa_cfg: ioa config struct
6162 * @ipr_cmd: ipr command struct
6163 *
6164 * This function determines whether or not to initiate ERP
6165 * on the affected device.
6166 *
6167 * Return value:
6168 * nothing
6169 **/
6170 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6171 struct ipr_cmnd *ipr_cmd)
6172 {
6173 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6174 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6175 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6176 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6177
6178 if (!res) {
6179 ipr_scsi_eh_done(ipr_cmd);
6180 return;
6181 }
6182
6183 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6184 ipr_gen_sense(ipr_cmd);
6185
6186 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6187
6188 switch (masked_ioasc) {
6189 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6190 if (ipr_is_naca_model(res))
6191 scsi_cmd->result |= (DID_ABORT << 16);
6192 else
6193 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6194 break;
6195 case IPR_IOASC_IR_RESOURCE_HANDLE:
6196 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6197 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6198 break;
6199 case IPR_IOASC_HW_SEL_TIMEOUT:
6200 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6201 if (!ipr_is_naca_model(res))
6202 res->needs_sync_complete = 1;
6203 break;
6204 case IPR_IOASC_SYNC_REQUIRED:
6205 if (!res->in_erp)
6206 res->needs_sync_complete = 1;
6207 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6208 break;
6209 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6210 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6211 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6212 break;
6213 case IPR_IOASC_BUS_WAS_RESET:
6214 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6215 /*
6216 * Report the bus reset and ask for a retry. The device
6217 * will give CC/UA the next command.
6218 */
6219 if (!res->resetting_device)
6220 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6221 scsi_cmd->result |= (DID_ERROR << 16);
6222 if (!ipr_is_naca_model(res))
6223 res->needs_sync_complete = 1;
6224 break;
6225 case IPR_IOASC_HW_DEV_BUS_STATUS:
6226 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6227 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6228 if (!ipr_get_autosense(ipr_cmd)) {
6229 if (!ipr_is_naca_model(res)) {
6230 ipr_erp_cancel_all(ipr_cmd);
6231 return;
6232 }
6233 }
6234 }
6235 if (!ipr_is_naca_model(res))
6236 res->needs_sync_complete = 1;
6237 break;
6238 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6239 break;
6240 case IPR_IOASC_IR_NON_OPTIMIZED:
6241 if (res->raw_mode) {
6242 res->raw_mode = 0;
6243 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6244 } else
6245 scsi_cmd->result |= (DID_ERROR << 16);
6246 break;
6247 default:
6248 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6249 scsi_cmd->result |= (DID_ERROR << 16);
6250 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6251 res->needs_sync_complete = 1;
6252 break;
6253 }
6254
6255 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6256 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6257 scsi_cmd->scsi_done(scsi_cmd);
6258 }
6259
6260 /**
6261 * ipr_scsi_done - mid-layer done function
6262 * @ipr_cmd: ipr command struct
6263 *
6264 * This function is invoked by the interrupt handler for
6265 * ops generated by the SCSI mid-layer
6266 *
6267 * Return value:
6268 * none
6269 **/
6270 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6271 {
6272 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6273 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6274 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6275 unsigned long lock_flags;
6276
6277 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6278
6279 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6280 scsi_dma_unmap(scsi_cmd);
6281
6282 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6283 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6284 scsi_cmd->scsi_done(scsi_cmd);
6285 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6286 } else {
6287 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6288 spin_lock(&ipr_cmd->hrrq->_lock);
6289 ipr_erp_start(ioa_cfg, ipr_cmd);
6290 spin_unlock(&ipr_cmd->hrrq->_lock);
6291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6292 }
6293 }
6294
6295 /**
6296 * ipr_queuecommand - Queue a mid-layer request
6297 * @shost: scsi host struct
6298 * @scsi_cmd: scsi command struct
6299 *
6300 * This function queues a request generated by the mid-layer.
6301 *
6302 * Return value:
6303 * 0 on success
6304 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6305 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6306 **/
6307 static int ipr_queuecommand(struct Scsi_Host *shost,
6308 struct scsi_cmnd *scsi_cmd)
6309 {
6310 struct ipr_ioa_cfg *ioa_cfg;
6311 struct ipr_resource_entry *res;
6312 struct ipr_ioarcb *ioarcb;
6313 struct ipr_cmnd *ipr_cmd;
6314 unsigned long hrrq_flags, lock_flags;
6315 int rc;
6316 struct ipr_hrr_queue *hrrq;
6317 int hrrq_id;
6318
6319 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6320
6321 scsi_cmd->result = (DID_OK << 16);
6322 res = scsi_cmd->device->hostdata;
6323
6324 if (ipr_is_gata(res) && res->sata_port) {
6325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6326 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6327 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6328 return rc;
6329 }
6330
6331 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6332 hrrq = &ioa_cfg->hrrq[hrrq_id];
6333
6334 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6335 /*
6336 * We are currently blocking all devices due to a host reset
6337 * We have told the host to stop giving us new requests, but
6338 * ERP ops don't count. FIXME
6339 */
6340 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6341 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6342 return SCSI_MLQUEUE_HOST_BUSY;
6343 }
6344
6345 /*
6346 * FIXME - Create scsi_set_host_offline interface
6347 * and the ioa_is_dead check can be removed
6348 */
6349 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6350 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6351 goto err_nodev;
6352 }
6353
6354 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6355 if (ipr_cmd == NULL) {
6356 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6357 return SCSI_MLQUEUE_HOST_BUSY;
6358 }
6359 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6360
6361 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6362 ioarcb = &ipr_cmd->ioarcb;
6363
6364 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6365 ipr_cmd->scsi_cmd = scsi_cmd;
6366 ipr_cmd->done = ipr_scsi_eh_done;
6367
6368 if (ipr_is_gscsi(res)) {
6369 if (scsi_cmd->underflow == 0)
6370 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6371
6372 if (res->reset_occurred) {
6373 res->reset_occurred = 0;
6374 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6375 }
6376 }
6377
6378 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6379 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6380
6381 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6382 if (scsi_cmd->flags & SCMD_TAGGED)
6383 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6384 else
6385 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6386 }
6387
6388 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6389 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6390 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6391 }
6392 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6393 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6394
6395 if (scsi_cmd->underflow == 0)
6396 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6397 }
6398
6399 if (ioa_cfg->sis64)
6400 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6401 else
6402 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6403
6404 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6405 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6406 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6407 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6408 if (!rc)
6409 scsi_dma_unmap(scsi_cmd);
6410 return SCSI_MLQUEUE_HOST_BUSY;
6411 }
6412
6413 if (unlikely(hrrq->ioa_is_dead)) {
6414 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6415 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6416 scsi_dma_unmap(scsi_cmd);
6417 goto err_nodev;
6418 }
6419
6420 ioarcb->res_handle = res->res_handle;
6421 if (res->needs_sync_complete) {
6422 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6423 res->needs_sync_complete = 0;
6424 }
6425 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6426 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6427 ipr_send_command(ipr_cmd);
6428 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6429 return 0;
6430
6431 err_nodev:
6432 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6433 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6434 scsi_cmd->result = (DID_NO_CONNECT << 16);
6435 scsi_cmd->scsi_done(scsi_cmd);
6436 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6437 return 0;
6438 }
6439
6440 /**
6441 * ipr_ioctl - IOCTL handler
6442 * @sdev: scsi device struct
6443 * @cmd: IOCTL cmd
6444 * @arg: IOCTL arg
6445 *
6446 * Return value:
6447 * 0 on success / other on failure
6448 **/
6449 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6450 {
6451 struct ipr_resource_entry *res;
6452
6453 res = (struct ipr_resource_entry *)sdev->hostdata;
6454 if (res && ipr_is_gata(res)) {
6455 if (cmd == HDIO_GET_IDENTITY)
6456 return -ENOTTY;
6457 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6458 }
6459
6460 return -EINVAL;
6461 }
6462
6463 /**
6464 * ipr_info - Get information about the card/driver
6465 * @scsi_host: scsi host struct
6466 *
6467 * Return value:
6468 * pointer to buffer with description string
6469 **/
6470 static const char *ipr_ioa_info(struct Scsi_Host *host)
6471 {
6472 static char buffer[512];
6473 struct ipr_ioa_cfg *ioa_cfg;
6474 unsigned long lock_flags = 0;
6475
6476 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6477
6478 spin_lock_irqsave(host->host_lock, lock_flags);
6479 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6480 spin_unlock_irqrestore(host->host_lock, lock_flags);
6481
6482 return buffer;
6483 }
6484
6485 static struct scsi_host_template driver_template = {
6486 .module = THIS_MODULE,
6487 .name = "IPR",
6488 .info = ipr_ioa_info,
6489 .ioctl = ipr_ioctl,
6490 .queuecommand = ipr_queuecommand,
6491 .eh_abort_handler = ipr_eh_abort,
6492 .eh_device_reset_handler = ipr_eh_dev_reset,
6493 .eh_host_reset_handler = ipr_eh_host_reset,
6494 .slave_alloc = ipr_slave_alloc,
6495 .slave_configure = ipr_slave_configure,
6496 .slave_destroy = ipr_slave_destroy,
6497 .scan_finished = ipr_scan_finished,
6498 .target_alloc = ipr_target_alloc,
6499 .target_destroy = ipr_target_destroy,
6500 .change_queue_depth = ipr_change_queue_depth,
6501 .bios_param = ipr_biosparam,
6502 .can_queue = IPR_MAX_COMMANDS,
6503 .this_id = -1,
6504 .sg_tablesize = IPR_MAX_SGLIST,
6505 .max_sectors = IPR_IOA_MAX_SECTORS,
6506 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6507 .use_clustering = ENABLE_CLUSTERING,
6508 .shost_attrs = ipr_ioa_attrs,
6509 .sdev_attrs = ipr_dev_attrs,
6510 .proc_name = IPR_NAME,
6511 };
6512
6513 /**
6514 * ipr_ata_phy_reset - libata phy_reset handler
6515 * @ap: ata port to reset
6516 *
6517 **/
6518 static void ipr_ata_phy_reset(struct ata_port *ap)
6519 {
6520 unsigned long flags;
6521 struct ipr_sata_port *sata_port = ap->private_data;
6522 struct ipr_resource_entry *res = sata_port->res;
6523 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6524 int rc;
6525
6526 ENTER;
6527 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6528 while (ioa_cfg->in_reset_reload) {
6529 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6530 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6531 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6532 }
6533
6534 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6535 goto out_unlock;
6536
6537 rc = ipr_device_reset(ioa_cfg, res);
6538
6539 if (rc) {
6540 ap->link.device[0].class = ATA_DEV_NONE;
6541 goto out_unlock;
6542 }
6543
6544 ap->link.device[0].class = res->ata_class;
6545 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6546 ap->link.device[0].class = ATA_DEV_NONE;
6547
6548 out_unlock:
6549 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6550 LEAVE;
6551 }
6552
6553 /**
6554 * ipr_ata_post_internal - Cleanup after an internal command
6555 * @qc: ATA queued command
6556 *
6557 * Return value:
6558 * none
6559 **/
6560 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6561 {
6562 struct ipr_sata_port *sata_port = qc->ap->private_data;
6563 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6564 struct ipr_cmnd *ipr_cmd;
6565 struct ipr_hrr_queue *hrrq;
6566 unsigned long flags;
6567
6568 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6569 while (ioa_cfg->in_reset_reload) {
6570 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6571 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6572 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6573 }
6574
6575 for_each_hrrq(hrrq, ioa_cfg) {
6576 spin_lock(&hrrq->_lock);
6577 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6578 if (ipr_cmd->qc == qc) {
6579 ipr_device_reset(ioa_cfg, sata_port->res);
6580 break;
6581 }
6582 }
6583 spin_unlock(&hrrq->_lock);
6584 }
6585 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6586 }
6587
6588 /**
6589 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6590 * @regs: destination
6591 * @tf: source ATA taskfile
6592 *
6593 * Return value:
6594 * none
6595 **/
6596 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6597 struct ata_taskfile *tf)
6598 {
6599 regs->feature = tf->feature;
6600 regs->nsect = tf->nsect;
6601 regs->lbal = tf->lbal;
6602 regs->lbam = tf->lbam;
6603 regs->lbah = tf->lbah;
6604 regs->device = tf->device;
6605 regs->command = tf->command;
6606 regs->hob_feature = tf->hob_feature;
6607 regs->hob_nsect = tf->hob_nsect;
6608 regs->hob_lbal = tf->hob_lbal;
6609 regs->hob_lbam = tf->hob_lbam;
6610 regs->hob_lbah = tf->hob_lbah;
6611 regs->ctl = tf->ctl;
6612 }
6613
6614 /**
6615 * ipr_sata_done - done function for SATA commands
6616 * @ipr_cmd: ipr command struct
6617 *
6618 * This function is invoked by the interrupt handler for
6619 * ops generated by the SCSI mid-layer to SATA devices
6620 *
6621 * Return value:
6622 * none
6623 **/
6624 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6625 {
6626 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6627 struct ata_queued_cmd *qc = ipr_cmd->qc;
6628 struct ipr_sata_port *sata_port = qc->ap->private_data;
6629 struct ipr_resource_entry *res = sata_port->res;
6630 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6631
6632 spin_lock(&ipr_cmd->hrrq->_lock);
6633 if (ipr_cmd->ioa_cfg->sis64)
6634 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6635 sizeof(struct ipr_ioasa_gata));
6636 else
6637 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6638 sizeof(struct ipr_ioasa_gata));
6639 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6640
6641 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6642 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6643
6644 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6645 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6646 else
6647 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6648 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6649 spin_unlock(&ipr_cmd->hrrq->_lock);
6650 ata_qc_complete(qc);
6651 }
6652
6653 /**
6654 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6655 * @ipr_cmd: ipr command struct
6656 * @qc: ATA queued command
6657 *
6658 **/
6659 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6660 struct ata_queued_cmd *qc)
6661 {
6662 u32 ioadl_flags = 0;
6663 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6664 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6665 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6666 int len = qc->nbytes;
6667 struct scatterlist *sg;
6668 unsigned int si;
6669 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6670
6671 if (len == 0)
6672 return;
6673
6674 if (qc->dma_dir == DMA_TO_DEVICE) {
6675 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6676 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6677 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6678 ioadl_flags = IPR_IOADL_FLAGS_READ;
6679
6680 ioarcb->data_transfer_length = cpu_to_be32(len);
6681 ioarcb->ioadl_len =
6682 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6683 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6684 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6685
6686 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6687 ioadl64->flags = cpu_to_be32(ioadl_flags);
6688 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6689 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6690
6691 last_ioadl64 = ioadl64;
6692 ioadl64++;
6693 }
6694
6695 if (likely(last_ioadl64))
6696 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6697 }
6698
6699 /**
6700 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6701 * @ipr_cmd: ipr command struct
6702 * @qc: ATA queued command
6703 *
6704 **/
6705 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6706 struct ata_queued_cmd *qc)
6707 {
6708 u32 ioadl_flags = 0;
6709 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6710 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6711 struct ipr_ioadl_desc *last_ioadl = NULL;
6712 int len = qc->nbytes;
6713 struct scatterlist *sg;
6714 unsigned int si;
6715
6716 if (len == 0)
6717 return;
6718
6719 if (qc->dma_dir == DMA_TO_DEVICE) {
6720 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6721 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6722 ioarcb->data_transfer_length = cpu_to_be32(len);
6723 ioarcb->ioadl_len =
6724 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6725 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6726 ioadl_flags = IPR_IOADL_FLAGS_READ;
6727 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6728 ioarcb->read_ioadl_len =
6729 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6730 }
6731
6732 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6733 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6734 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6735
6736 last_ioadl = ioadl;
6737 ioadl++;
6738 }
6739
6740 if (likely(last_ioadl))
6741 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6742 }
6743
6744 /**
6745 * ipr_qc_defer - Get a free ipr_cmd
6746 * @qc: queued command
6747 *
6748 * Return value:
6749 * 0 if success
6750 **/
6751 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6752 {
6753 struct ata_port *ap = qc->ap;
6754 struct ipr_sata_port *sata_port = ap->private_data;
6755 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6756 struct ipr_cmnd *ipr_cmd;
6757 struct ipr_hrr_queue *hrrq;
6758 int hrrq_id;
6759
6760 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6761 hrrq = &ioa_cfg->hrrq[hrrq_id];
6762
6763 qc->lldd_task = NULL;
6764 spin_lock(&hrrq->_lock);
6765 if (unlikely(hrrq->ioa_is_dead)) {
6766 spin_unlock(&hrrq->_lock);
6767 return 0;
6768 }
6769
6770 if (unlikely(!hrrq->allow_cmds)) {
6771 spin_unlock(&hrrq->_lock);
6772 return ATA_DEFER_LINK;
6773 }
6774
6775 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6776 if (ipr_cmd == NULL) {
6777 spin_unlock(&hrrq->_lock);
6778 return ATA_DEFER_LINK;
6779 }
6780
6781 qc->lldd_task = ipr_cmd;
6782 spin_unlock(&hrrq->_lock);
6783 return 0;
6784 }
6785
6786 /**
6787 * ipr_qc_issue - Issue a SATA qc to a device
6788 * @qc: queued command
6789 *
6790 * Return value:
6791 * 0 if success
6792 **/
6793 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6794 {
6795 struct ata_port *ap = qc->ap;
6796 struct ipr_sata_port *sata_port = ap->private_data;
6797 struct ipr_resource_entry *res = sata_port->res;
6798 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6799 struct ipr_cmnd *ipr_cmd;
6800 struct ipr_ioarcb *ioarcb;
6801 struct ipr_ioarcb_ata_regs *regs;
6802
6803 if (qc->lldd_task == NULL)
6804 ipr_qc_defer(qc);
6805
6806 ipr_cmd = qc->lldd_task;
6807 if (ipr_cmd == NULL)
6808 return AC_ERR_SYSTEM;
6809
6810 qc->lldd_task = NULL;
6811 spin_lock(&ipr_cmd->hrrq->_lock);
6812 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6813 ipr_cmd->hrrq->ioa_is_dead)) {
6814 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6815 spin_unlock(&ipr_cmd->hrrq->_lock);
6816 return AC_ERR_SYSTEM;
6817 }
6818
6819 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6820 ioarcb = &ipr_cmd->ioarcb;
6821
6822 if (ioa_cfg->sis64) {
6823 regs = &ipr_cmd->i.ata_ioadl.regs;
6824 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6825 } else
6826 regs = &ioarcb->u.add_data.u.regs;
6827
6828 memset(regs, 0, sizeof(*regs));
6829 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6830
6831 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6832 ipr_cmd->qc = qc;
6833 ipr_cmd->done = ipr_sata_done;
6834 ipr_cmd->ioarcb.res_handle = res->res_handle;
6835 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6836 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6837 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6838 ipr_cmd->dma_use_sg = qc->n_elem;
6839
6840 if (ioa_cfg->sis64)
6841 ipr_build_ata_ioadl64(ipr_cmd, qc);
6842 else
6843 ipr_build_ata_ioadl(ipr_cmd, qc);
6844
6845 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6846 ipr_copy_sata_tf(regs, &qc->tf);
6847 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6848 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6849
6850 switch (qc->tf.protocol) {
6851 case ATA_PROT_NODATA:
6852 case ATA_PROT_PIO:
6853 break;
6854
6855 case ATA_PROT_DMA:
6856 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6857 break;
6858
6859 case ATAPI_PROT_PIO:
6860 case ATAPI_PROT_NODATA:
6861 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6862 break;
6863
6864 case ATAPI_PROT_DMA:
6865 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6866 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6867 break;
6868
6869 default:
6870 WARN_ON(1);
6871 spin_unlock(&ipr_cmd->hrrq->_lock);
6872 return AC_ERR_INVALID;
6873 }
6874
6875 ipr_send_command(ipr_cmd);
6876 spin_unlock(&ipr_cmd->hrrq->_lock);
6877
6878 return 0;
6879 }
6880
6881 /**
6882 * ipr_qc_fill_rtf - Read result TF
6883 * @qc: ATA queued command
6884 *
6885 * Return value:
6886 * true
6887 **/
6888 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6889 {
6890 struct ipr_sata_port *sata_port = qc->ap->private_data;
6891 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6892 struct ata_taskfile *tf = &qc->result_tf;
6893
6894 tf->feature = g->error;
6895 tf->nsect = g->nsect;
6896 tf->lbal = g->lbal;
6897 tf->lbam = g->lbam;
6898 tf->lbah = g->lbah;
6899 tf->device = g->device;
6900 tf->command = g->status;
6901 tf->hob_nsect = g->hob_nsect;
6902 tf->hob_lbal = g->hob_lbal;
6903 tf->hob_lbam = g->hob_lbam;
6904 tf->hob_lbah = g->hob_lbah;
6905
6906 return true;
6907 }
6908
6909 static struct ata_port_operations ipr_sata_ops = {
6910 .phy_reset = ipr_ata_phy_reset,
6911 .hardreset = ipr_sata_reset,
6912 .post_internal_cmd = ipr_ata_post_internal,
6913 .qc_prep = ata_noop_qc_prep,
6914 .qc_defer = ipr_qc_defer,
6915 .qc_issue = ipr_qc_issue,
6916 .qc_fill_rtf = ipr_qc_fill_rtf,
6917 .port_start = ata_sas_port_start,
6918 .port_stop = ata_sas_port_stop
6919 };
6920
6921 static struct ata_port_info sata_port_info = {
6922 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
6923 ATA_FLAG_SAS_HOST,
6924 .pio_mask = ATA_PIO4_ONLY,
6925 .mwdma_mask = ATA_MWDMA2,
6926 .udma_mask = ATA_UDMA6,
6927 .port_ops = &ipr_sata_ops
6928 };
6929
6930 #ifdef CONFIG_PPC_PSERIES
6931 static const u16 ipr_blocked_processors[] = {
6932 PVR_NORTHSTAR,
6933 PVR_PULSAR,
6934 PVR_POWER4,
6935 PVR_ICESTAR,
6936 PVR_SSTAR,
6937 PVR_POWER4p,
6938 PVR_630,
6939 PVR_630p
6940 };
6941
6942 /**
6943 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6944 * @ioa_cfg: ioa cfg struct
6945 *
6946 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6947 * certain pSeries hardware. This function determines if the given
6948 * adapter is in one of these confgurations or not.
6949 *
6950 * Return value:
6951 * 1 if adapter is not supported / 0 if adapter is supported
6952 **/
6953 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6954 {
6955 int i;
6956
6957 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6958 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6959 if (pvr_version_is(ipr_blocked_processors[i]))
6960 return 1;
6961 }
6962 }
6963 return 0;
6964 }
6965 #else
6966 #define ipr_invalid_adapter(ioa_cfg) 0
6967 #endif
6968
6969 /**
6970 * ipr_ioa_bringdown_done - IOA bring down completion.
6971 * @ipr_cmd: ipr command struct
6972 *
6973 * This function processes the completion of an adapter bring down.
6974 * It wakes any reset sleepers.
6975 *
6976 * Return value:
6977 * IPR_RC_JOB_RETURN
6978 **/
6979 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6980 {
6981 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6982 int i;
6983
6984 ENTER;
6985 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6986 ipr_trace;
6987 spin_unlock_irq(ioa_cfg->host->host_lock);
6988 scsi_unblock_requests(ioa_cfg->host);
6989 spin_lock_irq(ioa_cfg->host->host_lock);
6990 }
6991
6992 ioa_cfg->in_reset_reload = 0;
6993 ioa_cfg->reset_retries = 0;
6994 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6995 spin_lock(&ioa_cfg->hrrq[i]._lock);
6996 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6997 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6998 }
6999 wmb();
7000
7001 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7002 wake_up_all(&ioa_cfg->reset_wait_q);
7003 LEAVE;
7004
7005 return IPR_RC_JOB_RETURN;
7006 }
7007
7008 /**
7009 * ipr_ioa_reset_done - IOA reset completion.
7010 * @ipr_cmd: ipr command struct
7011 *
7012 * This function processes the completion of an adapter reset.
7013 * It schedules any necessary mid-layer add/removes and
7014 * wakes any reset sleepers.
7015 *
7016 * Return value:
7017 * IPR_RC_JOB_RETURN
7018 **/
7019 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7020 {
7021 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7022 struct ipr_resource_entry *res;
7023 struct ipr_hostrcb *hostrcb, *temp;
7024 int i = 0, j;
7025
7026 ENTER;
7027 ioa_cfg->in_reset_reload = 0;
7028 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7029 spin_lock(&ioa_cfg->hrrq[j]._lock);
7030 ioa_cfg->hrrq[j].allow_cmds = 1;
7031 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7032 }
7033 wmb();
7034 ioa_cfg->reset_cmd = NULL;
7035 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7036
7037 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7038 if (res->add_to_ml || res->del_from_ml) {
7039 ipr_trace;
7040 break;
7041 }
7042 }
7043 schedule_work(&ioa_cfg->work_q);
7044
7045 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
7046 list_del(&hostrcb->queue);
7047 if (i++ < IPR_NUM_LOG_HCAMS)
7048 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
7049 else
7050 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
7051 }
7052
7053 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7054 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7055
7056 ioa_cfg->reset_retries = 0;
7057 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7058 wake_up_all(&ioa_cfg->reset_wait_q);
7059
7060 spin_unlock(ioa_cfg->host->host_lock);
7061 scsi_unblock_requests(ioa_cfg->host);
7062 spin_lock(ioa_cfg->host->host_lock);
7063
7064 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7065 scsi_block_requests(ioa_cfg->host);
7066
7067 schedule_work(&ioa_cfg->work_q);
7068 LEAVE;
7069 return IPR_RC_JOB_RETURN;
7070 }
7071
7072 /**
7073 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7074 * @supported_dev: supported device struct
7075 * @vpids: vendor product id struct
7076 *
7077 * Return value:
7078 * none
7079 **/
7080 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7081 struct ipr_std_inq_vpids *vpids)
7082 {
7083 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7084 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7085 supported_dev->num_records = 1;
7086 supported_dev->data_length =
7087 cpu_to_be16(sizeof(struct ipr_supported_device));
7088 supported_dev->reserved = 0;
7089 }
7090
7091 /**
7092 * ipr_set_supported_devs - Send Set Supported Devices for a device
7093 * @ipr_cmd: ipr command struct
7094 *
7095 * This function sends a Set Supported Devices to the adapter
7096 *
7097 * Return value:
7098 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7099 **/
7100 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7101 {
7102 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7103 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7104 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7105 struct ipr_resource_entry *res = ipr_cmd->u.res;
7106
7107 ipr_cmd->job_step = ipr_ioa_reset_done;
7108
7109 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7110 if (!ipr_is_scsi_disk(res))
7111 continue;
7112
7113 ipr_cmd->u.res = res;
7114 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7115
7116 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7117 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7118 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7119
7120 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7121 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7122 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7123 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7124
7125 ipr_init_ioadl(ipr_cmd,
7126 ioa_cfg->vpd_cbs_dma +
7127 offsetof(struct ipr_misc_cbs, supp_dev),
7128 sizeof(struct ipr_supported_device),
7129 IPR_IOADL_FLAGS_WRITE_LAST);
7130
7131 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7132 IPR_SET_SUP_DEVICE_TIMEOUT);
7133
7134 if (!ioa_cfg->sis64)
7135 ipr_cmd->job_step = ipr_set_supported_devs;
7136 LEAVE;
7137 return IPR_RC_JOB_RETURN;
7138 }
7139
7140 LEAVE;
7141 return IPR_RC_JOB_CONTINUE;
7142 }
7143
7144 /**
7145 * ipr_get_mode_page - Locate specified mode page
7146 * @mode_pages: mode page buffer
7147 * @page_code: page code to find
7148 * @len: minimum required length for mode page
7149 *
7150 * Return value:
7151 * pointer to mode page / NULL on failure
7152 **/
7153 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7154 u32 page_code, u32 len)
7155 {
7156 struct ipr_mode_page_hdr *mode_hdr;
7157 u32 page_length;
7158 u32 length;
7159
7160 if (!mode_pages || (mode_pages->hdr.length == 0))
7161 return NULL;
7162
7163 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7164 mode_hdr = (struct ipr_mode_page_hdr *)
7165 (mode_pages->data + mode_pages->hdr.block_desc_len);
7166
7167 while (length) {
7168 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7169 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7170 return mode_hdr;
7171 break;
7172 } else {
7173 page_length = (sizeof(struct ipr_mode_page_hdr) +
7174 mode_hdr->page_length);
7175 length -= page_length;
7176 mode_hdr = (struct ipr_mode_page_hdr *)
7177 ((unsigned long)mode_hdr + page_length);
7178 }
7179 }
7180 return NULL;
7181 }
7182
7183 /**
7184 * ipr_check_term_power - Check for term power errors
7185 * @ioa_cfg: ioa config struct
7186 * @mode_pages: IOAFP mode pages buffer
7187 *
7188 * Check the IOAFP's mode page 28 for term power errors
7189 *
7190 * Return value:
7191 * nothing
7192 **/
7193 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7194 struct ipr_mode_pages *mode_pages)
7195 {
7196 int i;
7197 int entry_length;
7198 struct ipr_dev_bus_entry *bus;
7199 struct ipr_mode_page28 *mode_page;
7200
7201 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7202 sizeof(struct ipr_mode_page28));
7203
7204 entry_length = mode_page->entry_length;
7205
7206 bus = mode_page->bus;
7207
7208 for (i = 0; i < mode_page->num_entries; i++) {
7209 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7210 dev_err(&ioa_cfg->pdev->dev,
7211 "Term power is absent on scsi bus %d\n",
7212 bus->res_addr.bus);
7213 }
7214
7215 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7216 }
7217 }
7218
7219 /**
7220 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7221 * @ioa_cfg: ioa config struct
7222 *
7223 * Looks through the config table checking for SES devices. If
7224 * the SES device is in the SES table indicating a maximum SCSI
7225 * bus speed, the speed is limited for the bus.
7226 *
7227 * Return value:
7228 * none
7229 **/
7230 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7231 {
7232 u32 max_xfer_rate;
7233 int i;
7234
7235 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7236 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7237 ioa_cfg->bus_attr[i].bus_width);
7238
7239 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7240 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7241 }
7242 }
7243
7244 /**
7245 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7246 * @ioa_cfg: ioa config struct
7247 * @mode_pages: mode page 28 buffer
7248 *
7249 * Updates mode page 28 based on driver configuration
7250 *
7251 * Return value:
7252 * none
7253 **/
7254 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7255 struct ipr_mode_pages *mode_pages)
7256 {
7257 int i, entry_length;
7258 struct ipr_dev_bus_entry *bus;
7259 struct ipr_bus_attributes *bus_attr;
7260 struct ipr_mode_page28 *mode_page;
7261
7262 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7263 sizeof(struct ipr_mode_page28));
7264
7265 entry_length = mode_page->entry_length;
7266
7267 /* Loop for each device bus entry */
7268 for (i = 0, bus = mode_page->bus;
7269 i < mode_page->num_entries;
7270 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7271 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7272 dev_err(&ioa_cfg->pdev->dev,
7273 "Invalid resource address reported: 0x%08X\n",
7274 IPR_GET_PHYS_LOC(bus->res_addr));
7275 continue;
7276 }
7277
7278 bus_attr = &ioa_cfg->bus_attr[i];
7279 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7280 bus->bus_width = bus_attr->bus_width;
7281 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7282 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7283 if (bus_attr->qas_enabled)
7284 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7285 else
7286 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7287 }
7288 }
7289
7290 /**
7291 * ipr_build_mode_select - Build a mode select command
7292 * @ipr_cmd: ipr command struct
7293 * @res_handle: resource handle to send command to
7294 * @parm: Byte 2 of Mode Sense command
7295 * @dma_addr: DMA buffer address
7296 * @xfer_len: data transfer length
7297 *
7298 * Return value:
7299 * none
7300 **/
7301 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7302 __be32 res_handle, u8 parm,
7303 dma_addr_t dma_addr, u8 xfer_len)
7304 {
7305 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7306
7307 ioarcb->res_handle = res_handle;
7308 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7309 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7310 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7311 ioarcb->cmd_pkt.cdb[1] = parm;
7312 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7313
7314 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7315 }
7316
7317 /**
7318 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7319 * @ipr_cmd: ipr command struct
7320 *
7321 * This function sets up the SCSI bus attributes and sends
7322 * a Mode Select for Page 28 to activate them.
7323 *
7324 * Return value:
7325 * IPR_RC_JOB_RETURN
7326 **/
7327 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7328 {
7329 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7330 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7331 int length;
7332
7333 ENTER;
7334 ipr_scsi_bus_speed_limit(ioa_cfg);
7335 ipr_check_term_power(ioa_cfg, mode_pages);
7336 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7337 length = mode_pages->hdr.length + 1;
7338 mode_pages->hdr.length = 0;
7339
7340 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7341 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7342 length);
7343
7344 ipr_cmd->job_step = ipr_set_supported_devs;
7345 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7346 struct ipr_resource_entry, queue);
7347 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7348
7349 LEAVE;
7350 return IPR_RC_JOB_RETURN;
7351 }
7352
7353 /**
7354 * ipr_build_mode_sense - Builds a mode sense command
7355 * @ipr_cmd: ipr command struct
7356 * @res: resource entry struct
7357 * @parm: Byte 2 of mode sense command
7358 * @dma_addr: DMA address of mode sense buffer
7359 * @xfer_len: Size of DMA buffer
7360 *
7361 * Return value:
7362 * none
7363 **/
7364 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7365 __be32 res_handle,
7366 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7367 {
7368 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7369
7370 ioarcb->res_handle = res_handle;
7371 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7372 ioarcb->cmd_pkt.cdb[2] = parm;
7373 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7374 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7375
7376 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7377 }
7378
7379 /**
7380 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7381 * @ipr_cmd: ipr command struct
7382 *
7383 * This function handles the failure of an IOA bringup command.
7384 *
7385 * Return value:
7386 * IPR_RC_JOB_RETURN
7387 **/
7388 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7389 {
7390 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7391 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7392
7393 dev_err(&ioa_cfg->pdev->dev,
7394 "0x%02X failed with IOASC: 0x%08X\n",
7395 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7396
7397 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7398 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7399 return IPR_RC_JOB_RETURN;
7400 }
7401
7402 /**
7403 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7404 * @ipr_cmd: ipr command struct
7405 *
7406 * This function handles the failure of a Mode Sense to the IOAFP.
7407 * Some adapters do not handle all mode pages.
7408 *
7409 * Return value:
7410 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7411 **/
7412 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7413 {
7414 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7415 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7416
7417 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7418 ipr_cmd->job_step = ipr_set_supported_devs;
7419 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7420 struct ipr_resource_entry, queue);
7421 return IPR_RC_JOB_CONTINUE;
7422 }
7423
7424 return ipr_reset_cmd_failed(ipr_cmd);
7425 }
7426
7427 /**
7428 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7429 * @ipr_cmd: ipr command struct
7430 *
7431 * This function send a Page 28 mode sense to the IOA to
7432 * retrieve SCSI bus attributes.
7433 *
7434 * Return value:
7435 * IPR_RC_JOB_RETURN
7436 **/
7437 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7438 {
7439 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7440
7441 ENTER;
7442 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7443 0x28, ioa_cfg->vpd_cbs_dma +
7444 offsetof(struct ipr_misc_cbs, mode_pages),
7445 sizeof(struct ipr_mode_pages));
7446
7447 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7448 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7449
7450 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7451
7452 LEAVE;
7453 return IPR_RC_JOB_RETURN;
7454 }
7455
7456 /**
7457 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7458 * @ipr_cmd: ipr command struct
7459 *
7460 * This function enables dual IOA RAID support if possible.
7461 *
7462 * Return value:
7463 * IPR_RC_JOB_RETURN
7464 **/
7465 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7466 {
7467 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7468 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7469 struct ipr_mode_page24 *mode_page;
7470 int length;
7471
7472 ENTER;
7473 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7474 sizeof(struct ipr_mode_page24));
7475
7476 if (mode_page)
7477 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7478
7479 length = mode_pages->hdr.length + 1;
7480 mode_pages->hdr.length = 0;
7481
7482 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7483 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7484 length);
7485
7486 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7487 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7488
7489 LEAVE;
7490 return IPR_RC_JOB_RETURN;
7491 }
7492
7493 /**
7494 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7495 * @ipr_cmd: ipr command struct
7496 *
7497 * This function handles the failure of a Mode Sense to the IOAFP.
7498 * Some adapters do not handle all mode pages.
7499 *
7500 * Return value:
7501 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7502 **/
7503 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7504 {
7505 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7506
7507 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7508 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7509 return IPR_RC_JOB_CONTINUE;
7510 }
7511
7512 return ipr_reset_cmd_failed(ipr_cmd);
7513 }
7514
7515 /**
7516 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7517 * @ipr_cmd: ipr command struct
7518 *
7519 * This function send a mode sense to the IOA to retrieve
7520 * the IOA Advanced Function Control mode page.
7521 *
7522 * Return value:
7523 * IPR_RC_JOB_RETURN
7524 **/
7525 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7526 {
7527 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7528
7529 ENTER;
7530 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7531 0x24, ioa_cfg->vpd_cbs_dma +
7532 offsetof(struct ipr_misc_cbs, mode_pages),
7533 sizeof(struct ipr_mode_pages));
7534
7535 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7536 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7537
7538 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7539
7540 LEAVE;
7541 return IPR_RC_JOB_RETURN;
7542 }
7543
7544 /**
7545 * ipr_init_res_table - Initialize the resource table
7546 * @ipr_cmd: ipr command struct
7547 *
7548 * This function looks through the existing resource table, comparing
7549 * it with the config table. This function will take care of old/new
7550 * devices and schedule adding/removing them from the mid-layer
7551 * as appropriate.
7552 *
7553 * Return value:
7554 * IPR_RC_JOB_CONTINUE
7555 **/
7556 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7557 {
7558 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7559 struct ipr_resource_entry *res, *temp;
7560 struct ipr_config_table_entry_wrapper cfgtew;
7561 int entries, found, flag, i;
7562 LIST_HEAD(old_res);
7563
7564 ENTER;
7565 if (ioa_cfg->sis64)
7566 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7567 else
7568 flag = ioa_cfg->u.cfg_table->hdr.flags;
7569
7570 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7571 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7572
7573 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7574 list_move_tail(&res->queue, &old_res);
7575
7576 if (ioa_cfg->sis64)
7577 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7578 else
7579 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7580
7581 for (i = 0; i < entries; i++) {
7582 if (ioa_cfg->sis64)
7583 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7584 else
7585 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7586 found = 0;
7587
7588 list_for_each_entry_safe(res, temp, &old_res, queue) {
7589 if (ipr_is_same_device(res, &cfgtew)) {
7590 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7591 found = 1;
7592 break;
7593 }
7594 }
7595
7596 if (!found) {
7597 if (list_empty(&ioa_cfg->free_res_q)) {
7598 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7599 break;
7600 }
7601
7602 found = 1;
7603 res = list_entry(ioa_cfg->free_res_q.next,
7604 struct ipr_resource_entry, queue);
7605 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7606 ipr_init_res_entry(res, &cfgtew);
7607 res->add_to_ml = 1;
7608 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7609 res->sdev->allow_restart = 1;
7610
7611 if (found)
7612 ipr_update_res_entry(res, &cfgtew);
7613 }
7614
7615 list_for_each_entry_safe(res, temp, &old_res, queue) {
7616 if (res->sdev) {
7617 res->del_from_ml = 1;
7618 res->res_handle = IPR_INVALID_RES_HANDLE;
7619 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7620 }
7621 }
7622
7623 list_for_each_entry_safe(res, temp, &old_res, queue) {
7624 ipr_clear_res_target(res);
7625 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7626 }
7627
7628 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7629 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7630 else
7631 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7632
7633 LEAVE;
7634 return IPR_RC_JOB_CONTINUE;
7635 }
7636
7637 /**
7638 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7639 * @ipr_cmd: ipr command struct
7640 *
7641 * This function sends a Query IOA Configuration command
7642 * to the adapter to retrieve the IOA configuration table.
7643 *
7644 * Return value:
7645 * IPR_RC_JOB_RETURN
7646 **/
7647 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7648 {
7649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7650 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7651 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7652 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7653
7654 ENTER;
7655 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7656 ioa_cfg->dual_raid = 1;
7657 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7658 ucode_vpd->major_release, ucode_vpd->card_type,
7659 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7660 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7661 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7662
7663 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7664 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7665 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7666 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7667
7668 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7669 IPR_IOADL_FLAGS_READ_LAST);
7670
7671 ipr_cmd->job_step = ipr_init_res_table;
7672
7673 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7674
7675 LEAVE;
7676 return IPR_RC_JOB_RETURN;
7677 }
7678
7679 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7680 {
7681 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7682
7683 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7684 return IPR_RC_JOB_CONTINUE;
7685
7686 return ipr_reset_cmd_failed(ipr_cmd);
7687 }
7688
7689 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7690 __be32 res_handle, u8 sa_code)
7691 {
7692 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7693
7694 ioarcb->res_handle = res_handle;
7695 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7696 ioarcb->cmd_pkt.cdb[1] = sa_code;
7697 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7698 }
7699
7700 /**
7701 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7702 * action
7703 *
7704 * Return value:
7705 * none
7706 **/
7707 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7708 {
7709 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7710 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7711 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7712
7713 ENTER;
7714
7715 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7716
7717 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7718 ipr_build_ioa_service_action(ipr_cmd,
7719 cpu_to_be32(IPR_IOA_RES_HANDLE),
7720 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7721
7722 ioarcb->cmd_pkt.cdb[2] = 0x40;
7723
7724 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7725 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7726 IPR_SET_SUP_DEVICE_TIMEOUT);
7727
7728 LEAVE;
7729 return IPR_RC_JOB_RETURN;
7730 }
7731
7732 LEAVE;
7733 return IPR_RC_JOB_CONTINUE;
7734 }
7735
7736 /**
7737 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7738 * @ipr_cmd: ipr command struct
7739 *
7740 * This utility function sends an inquiry to the adapter.
7741 *
7742 * Return value:
7743 * none
7744 **/
7745 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7746 dma_addr_t dma_addr, u8 xfer_len)
7747 {
7748 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7749
7750 ENTER;
7751 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7752 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7753
7754 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7755 ioarcb->cmd_pkt.cdb[1] = flags;
7756 ioarcb->cmd_pkt.cdb[2] = page;
7757 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7758
7759 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7760
7761 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7762 LEAVE;
7763 }
7764
7765 /**
7766 * ipr_inquiry_page_supported - Is the given inquiry page supported
7767 * @page0: inquiry page 0 buffer
7768 * @page: page code.
7769 *
7770 * This function determines if the specified inquiry page is supported.
7771 *
7772 * Return value:
7773 * 1 if page is supported / 0 if not
7774 **/
7775 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7776 {
7777 int i;
7778
7779 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7780 if (page0->page[i] == page)
7781 return 1;
7782
7783 return 0;
7784 }
7785
7786 /**
7787 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7788 * @ipr_cmd: ipr command struct
7789 *
7790 * This function sends a Page 0xC4 inquiry to the adapter
7791 * to retrieve software VPD information.
7792 *
7793 * Return value:
7794 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7795 **/
7796 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7797 {
7798 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7799 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7800 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7801
7802 ENTER;
7803 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
7804 memset(pageC4, 0, sizeof(*pageC4));
7805
7806 if (ipr_inquiry_page_supported(page0, 0xC4)) {
7807 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7808 (ioa_cfg->vpd_cbs_dma
7809 + offsetof(struct ipr_misc_cbs,
7810 pageC4_data)),
7811 sizeof(struct ipr_inquiry_pageC4));
7812 return IPR_RC_JOB_RETURN;
7813 }
7814
7815 LEAVE;
7816 return IPR_RC_JOB_CONTINUE;
7817 }
7818
7819 /**
7820 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7821 * @ipr_cmd: ipr command struct
7822 *
7823 * This function sends a Page 0xD0 inquiry to the adapter
7824 * to retrieve adapter capabilities.
7825 *
7826 * Return value:
7827 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7828 **/
7829 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7830 {
7831 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7832 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7833 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7834
7835 ENTER;
7836 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7837 memset(cap, 0, sizeof(*cap));
7838
7839 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7840 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7841 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7842 sizeof(struct ipr_inquiry_cap));
7843 return IPR_RC_JOB_RETURN;
7844 }
7845
7846 LEAVE;
7847 return IPR_RC_JOB_CONTINUE;
7848 }
7849
7850 /**
7851 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7852 * @ipr_cmd: ipr command struct
7853 *
7854 * This function sends a Page 3 inquiry to the adapter
7855 * to retrieve software VPD information.
7856 *
7857 * Return value:
7858 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7859 **/
7860 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7861 {
7862 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7863
7864 ENTER;
7865
7866 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7867
7868 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7869 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7870 sizeof(struct ipr_inquiry_page3));
7871
7872 LEAVE;
7873 return IPR_RC_JOB_RETURN;
7874 }
7875
7876 /**
7877 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7878 * @ipr_cmd: ipr command struct
7879 *
7880 * This function sends a Page 0 inquiry to the adapter
7881 * to retrieve supported inquiry pages.
7882 *
7883 * Return value:
7884 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7885 **/
7886 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7887 {
7888 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7889 char type[5];
7890
7891 ENTER;
7892
7893 /* Grab the type out of the VPD and store it away */
7894 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7895 type[4] = '\0';
7896 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7897
7898 if (ipr_invalid_adapter(ioa_cfg)) {
7899 dev_err(&ioa_cfg->pdev->dev,
7900 "Adapter not supported in this hardware configuration.\n");
7901
7902 if (!ipr_testmode) {
7903 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7904 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7905 list_add_tail(&ipr_cmd->queue,
7906 &ioa_cfg->hrrq->hrrq_free_q);
7907 return IPR_RC_JOB_RETURN;
7908 }
7909 }
7910
7911 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7912
7913 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7914 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7915 sizeof(struct ipr_inquiry_page0));
7916
7917 LEAVE;
7918 return IPR_RC_JOB_RETURN;
7919 }
7920
7921 /**
7922 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7923 * @ipr_cmd: ipr command struct
7924 *
7925 * This function sends a standard inquiry to the adapter.
7926 *
7927 * Return value:
7928 * IPR_RC_JOB_RETURN
7929 **/
7930 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7931 {
7932 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7933
7934 ENTER;
7935 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7936
7937 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7938 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7939 sizeof(struct ipr_ioa_vpd));
7940
7941 LEAVE;
7942 return IPR_RC_JOB_RETURN;
7943 }
7944
7945 /**
7946 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7947 * @ipr_cmd: ipr command struct
7948 *
7949 * This function send an Identify Host Request Response Queue
7950 * command to establish the HRRQ with the adapter.
7951 *
7952 * Return value:
7953 * IPR_RC_JOB_RETURN
7954 **/
7955 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7956 {
7957 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7958 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7959 struct ipr_hrr_queue *hrrq;
7960
7961 ENTER;
7962 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7963 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7964
7965 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7966 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7967
7968 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7969 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7970
7971 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7972 if (ioa_cfg->sis64)
7973 ioarcb->cmd_pkt.cdb[1] = 0x1;
7974
7975 if (ioa_cfg->nvectors == 1)
7976 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7977 else
7978 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7979
7980 ioarcb->cmd_pkt.cdb[2] =
7981 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7982 ioarcb->cmd_pkt.cdb[3] =
7983 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7984 ioarcb->cmd_pkt.cdb[4] =
7985 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7986 ioarcb->cmd_pkt.cdb[5] =
7987 ((u64) hrrq->host_rrq_dma) & 0xff;
7988 ioarcb->cmd_pkt.cdb[7] =
7989 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7990 ioarcb->cmd_pkt.cdb[8] =
7991 (sizeof(u32) * hrrq->size) & 0xff;
7992
7993 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7994 ioarcb->cmd_pkt.cdb[9] =
7995 ioa_cfg->identify_hrrq_index;
7996
7997 if (ioa_cfg->sis64) {
7998 ioarcb->cmd_pkt.cdb[10] =
7999 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
8000 ioarcb->cmd_pkt.cdb[11] =
8001 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8002 ioarcb->cmd_pkt.cdb[12] =
8003 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8004 ioarcb->cmd_pkt.cdb[13] =
8005 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8006 }
8007
8008 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8009 ioarcb->cmd_pkt.cdb[14] =
8010 ioa_cfg->identify_hrrq_index;
8011
8012 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8013 IPR_INTERNAL_TIMEOUT);
8014
8015 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8016 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8017
8018 LEAVE;
8019 return IPR_RC_JOB_RETURN;
8020 }
8021
8022 LEAVE;
8023 return IPR_RC_JOB_CONTINUE;
8024 }
8025
8026 /**
8027 * ipr_reset_timer_done - Adapter reset timer function
8028 * @ipr_cmd: ipr command struct
8029 *
8030 * Description: This function is used in adapter reset processing
8031 * for timing events. If the reset_cmd pointer in the IOA
8032 * config struct is not this adapter's we are doing nested
8033 * resets and fail_all_ops will take care of freeing the
8034 * command block.
8035 *
8036 * Return value:
8037 * none
8038 **/
8039 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
8040 {
8041 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8042 unsigned long lock_flags = 0;
8043
8044 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8045
8046 if (ioa_cfg->reset_cmd == ipr_cmd) {
8047 list_del(&ipr_cmd->queue);
8048 ipr_cmd->done(ipr_cmd);
8049 }
8050
8051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8052 }
8053
8054 /**
8055 * ipr_reset_start_timer - Start a timer for adapter reset job
8056 * @ipr_cmd: ipr command struct
8057 * @timeout: timeout value
8058 *
8059 * Description: This function is used in adapter reset processing
8060 * for timing events. If the reset_cmd pointer in the IOA
8061 * config struct is not this adapter's we are doing nested
8062 * resets and fail_all_ops will take care of freeing the
8063 * command block.
8064 *
8065 * Return value:
8066 * none
8067 **/
8068 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8069 unsigned long timeout)
8070 {
8071
8072 ENTER;
8073 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8074 ipr_cmd->done = ipr_reset_ioa_job;
8075
8076 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8077 ipr_cmd->timer.expires = jiffies + timeout;
8078 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8079 add_timer(&ipr_cmd->timer);
8080 }
8081
8082 /**
8083 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8084 * @ioa_cfg: ioa cfg struct
8085 *
8086 * Return value:
8087 * nothing
8088 **/
8089 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8090 {
8091 struct ipr_hrr_queue *hrrq;
8092
8093 for_each_hrrq(hrrq, ioa_cfg) {
8094 spin_lock(&hrrq->_lock);
8095 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8096
8097 /* Initialize Host RRQ pointers */
8098 hrrq->hrrq_start = hrrq->host_rrq;
8099 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8100 hrrq->hrrq_curr = hrrq->hrrq_start;
8101 hrrq->toggle_bit = 1;
8102 spin_unlock(&hrrq->_lock);
8103 }
8104 wmb();
8105
8106 ioa_cfg->identify_hrrq_index = 0;
8107 if (ioa_cfg->hrrq_num == 1)
8108 atomic_set(&ioa_cfg->hrrq_index, 0);
8109 else
8110 atomic_set(&ioa_cfg->hrrq_index, 1);
8111
8112 /* Zero out config table */
8113 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8114 }
8115
8116 /**
8117 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8118 * @ipr_cmd: ipr command struct
8119 *
8120 * Return value:
8121 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8122 **/
8123 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8124 {
8125 unsigned long stage, stage_time;
8126 u32 feedback;
8127 volatile u32 int_reg;
8128 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8129 u64 maskval = 0;
8130
8131 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8132 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8133 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8134
8135 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8136
8137 /* sanity check the stage_time value */
8138 if (stage_time == 0)
8139 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8140 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8141 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8142 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8143 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8144
8145 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8146 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8147 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8148 stage_time = ioa_cfg->transop_timeout;
8149 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8150 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8151 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8152 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8153 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8154 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8155 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8156 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8157 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8158 return IPR_RC_JOB_CONTINUE;
8159 }
8160 }
8161
8162 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8163 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8164 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8165 ipr_cmd->done = ipr_reset_ioa_job;
8166 add_timer(&ipr_cmd->timer);
8167
8168 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8169
8170 return IPR_RC_JOB_RETURN;
8171 }
8172
8173 /**
8174 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8175 * @ipr_cmd: ipr command struct
8176 *
8177 * This function reinitializes some control blocks and
8178 * enables destructive diagnostics on the adapter.
8179 *
8180 * Return value:
8181 * IPR_RC_JOB_RETURN
8182 **/
8183 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8184 {
8185 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8186 volatile u32 int_reg;
8187 volatile u64 maskval;
8188 int i;
8189
8190 ENTER;
8191 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8192 ipr_init_ioa_mem(ioa_cfg);
8193
8194 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8195 spin_lock(&ioa_cfg->hrrq[i]._lock);
8196 ioa_cfg->hrrq[i].allow_interrupts = 1;
8197 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8198 }
8199 wmb();
8200 if (ioa_cfg->sis64) {
8201 /* Set the adapter to the correct endian mode. */
8202 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8203 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8204 }
8205
8206 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8207
8208 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8209 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8210 ioa_cfg->regs.clr_interrupt_mask_reg32);
8211 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8212 return IPR_RC_JOB_CONTINUE;
8213 }
8214
8215 /* Enable destructive diagnostics on IOA */
8216 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8217
8218 if (ioa_cfg->sis64) {
8219 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8220 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8221 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8222 } else
8223 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8224
8225 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8226
8227 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8228
8229 if (ioa_cfg->sis64) {
8230 ipr_cmd->job_step = ipr_reset_next_stage;
8231 return IPR_RC_JOB_CONTINUE;
8232 }
8233
8234 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8235 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8236 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8237 ipr_cmd->done = ipr_reset_ioa_job;
8238 add_timer(&ipr_cmd->timer);
8239 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8240
8241 LEAVE;
8242 return IPR_RC_JOB_RETURN;
8243 }
8244
8245 /**
8246 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8247 * @ipr_cmd: ipr command struct
8248 *
8249 * This function is invoked when an adapter dump has run out
8250 * of processing time.
8251 *
8252 * Return value:
8253 * IPR_RC_JOB_CONTINUE
8254 **/
8255 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8256 {
8257 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8258
8259 if (ioa_cfg->sdt_state == GET_DUMP)
8260 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8261 else if (ioa_cfg->sdt_state == READ_DUMP)
8262 ioa_cfg->sdt_state = ABORT_DUMP;
8263
8264 ioa_cfg->dump_timeout = 1;
8265 ipr_cmd->job_step = ipr_reset_alert;
8266
8267 return IPR_RC_JOB_CONTINUE;
8268 }
8269
8270 /**
8271 * ipr_unit_check_no_data - Log a unit check/no data error log
8272 * @ioa_cfg: ioa config struct
8273 *
8274 * Logs an error indicating the adapter unit checked, but for some
8275 * reason, we were unable to fetch the unit check buffer.
8276 *
8277 * Return value:
8278 * nothing
8279 **/
8280 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8281 {
8282 ioa_cfg->errors_logged++;
8283 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8284 }
8285
8286 /**
8287 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8288 * @ioa_cfg: ioa config struct
8289 *
8290 * Fetches the unit check buffer from the adapter by clocking the data
8291 * through the mailbox register.
8292 *
8293 * Return value:
8294 * nothing
8295 **/
8296 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8297 {
8298 unsigned long mailbox;
8299 struct ipr_hostrcb *hostrcb;
8300 struct ipr_uc_sdt sdt;
8301 int rc, length;
8302 u32 ioasc;
8303
8304 mailbox = readl(ioa_cfg->ioa_mailbox);
8305
8306 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8307 ipr_unit_check_no_data(ioa_cfg);
8308 return;
8309 }
8310
8311 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8312 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8313 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8314
8315 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8316 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8317 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8318 ipr_unit_check_no_data(ioa_cfg);
8319 return;
8320 }
8321
8322 /* Find length of the first sdt entry (UC buffer) */
8323 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8324 length = be32_to_cpu(sdt.entry[0].end_token);
8325 else
8326 length = (be32_to_cpu(sdt.entry[0].end_token) -
8327 be32_to_cpu(sdt.entry[0].start_token)) &
8328 IPR_FMT2_MBX_ADDR_MASK;
8329
8330 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8331 struct ipr_hostrcb, queue);
8332 list_del(&hostrcb->queue);
8333 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8334
8335 rc = ipr_get_ldump_data_section(ioa_cfg,
8336 be32_to_cpu(sdt.entry[0].start_token),
8337 (__be32 *)&hostrcb->hcam,
8338 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8339
8340 if (!rc) {
8341 ipr_handle_log_data(ioa_cfg, hostrcb);
8342 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8343 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8344 ioa_cfg->sdt_state == GET_DUMP)
8345 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8346 } else
8347 ipr_unit_check_no_data(ioa_cfg);
8348
8349 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8350 }
8351
8352 /**
8353 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8354 * @ipr_cmd: ipr command struct
8355 *
8356 * Description: This function will call to get the unit check buffer.
8357 *
8358 * Return value:
8359 * IPR_RC_JOB_RETURN
8360 **/
8361 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8362 {
8363 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8364
8365 ENTER;
8366 ioa_cfg->ioa_unit_checked = 0;
8367 ipr_get_unit_check_buffer(ioa_cfg);
8368 ipr_cmd->job_step = ipr_reset_alert;
8369 ipr_reset_start_timer(ipr_cmd, 0);
8370
8371 LEAVE;
8372 return IPR_RC_JOB_RETURN;
8373 }
8374
8375 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8376 {
8377 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8378
8379 ENTER;
8380
8381 if (ioa_cfg->sdt_state != GET_DUMP)
8382 return IPR_RC_JOB_RETURN;
8383
8384 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8385 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8386 IPR_PCII_MAILBOX_STABLE)) {
8387
8388 if (!ipr_cmd->u.time_left)
8389 dev_err(&ioa_cfg->pdev->dev,
8390 "Timed out waiting for Mailbox register.\n");
8391
8392 ioa_cfg->sdt_state = READ_DUMP;
8393 ioa_cfg->dump_timeout = 0;
8394 if (ioa_cfg->sis64)
8395 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8396 else
8397 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8398 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8399 schedule_work(&ioa_cfg->work_q);
8400
8401 } else {
8402 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8403 ipr_reset_start_timer(ipr_cmd,
8404 IPR_CHECK_FOR_RESET_TIMEOUT);
8405 }
8406
8407 LEAVE;
8408 return IPR_RC_JOB_RETURN;
8409 }
8410
8411 /**
8412 * ipr_reset_restore_cfg_space - Restore PCI config space.
8413 * @ipr_cmd: ipr command struct
8414 *
8415 * Description: This function restores the saved PCI config space of
8416 * the adapter, fails all outstanding ops back to the callers, and
8417 * fetches the dump/unit check if applicable to this reset.
8418 *
8419 * Return value:
8420 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8421 **/
8422 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8423 {
8424 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8425 u32 int_reg;
8426
8427 ENTER;
8428 ioa_cfg->pdev->state_saved = true;
8429 pci_restore_state(ioa_cfg->pdev);
8430
8431 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8432 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8433 return IPR_RC_JOB_CONTINUE;
8434 }
8435
8436 ipr_fail_all_ops(ioa_cfg);
8437
8438 if (ioa_cfg->sis64) {
8439 /* Set the adapter to the correct endian mode. */
8440 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8441 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8442 }
8443
8444 if (ioa_cfg->ioa_unit_checked) {
8445 if (ioa_cfg->sis64) {
8446 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8447 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8448 return IPR_RC_JOB_RETURN;
8449 } else {
8450 ioa_cfg->ioa_unit_checked = 0;
8451 ipr_get_unit_check_buffer(ioa_cfg);
8452 ipr_cmd->job_step = ipr_reset_alert;
8453 ipr_reset_start_timer(ipr_cmd, 0);
8454 return IPR_RC_JOB_RETURN;
8455 }
8456 }
8457
8458 if (ioa_cfg->in_ioa_bringdown) {
8459 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8460 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8461 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8462 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8463 } else {
8464 ipr_cmd->job_step = ipr_reset_enable_ioa;
8465 }
8466
8467 LEAVE;
8468 return IPR_RC_JOB_CONTINUE;
8469 }
8470
8471 /**
8472 * ipr_reset_bist_done - BIST has completed on the adapter.
8473 * @ipr_cmd: ipr command struct
8474 *
8475 * Description: Unblock config space and resume the reset process.
8476 *
8477 * Return value:
8478 * IPR_RC_JOB_CONTINUE
8479 **/
8480 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8481 {
8482 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8483
8484 ENTER;
8485 if (ioa_cfg->cfg_locked)
8486 pci_cfg_access_unlock(ioa_cfg->pdev);
8487 ioa_cfg->cfg_locked = 0;
8488 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8489 LEAVE;
8490 return IPR_RC_JOB_CONTINUE;
8491 }
8492
8493 /**
8494 * ipr_reset_start_bist - Run BIST on the adapter.
8495 * @ipr_cmd: ipr command struct
8496 *
8497 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8498 *
8499 * Return value:
8500 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8501 **/
8502 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8503 {
8504 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8505 int rc = PCIBIOS_SUCCESSFUL;
8506
8507 ENTER;
8508 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8509 writel(IPR_UPROCI_SIS64_START_BIST,
8510 ioa_cfg->regs.set_uproc_interrupt_reg32);
8511 else
8512 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8513
8514 if (rc == PCIBIOS_SUCCESSFUL) {
8515 ipr_cmd->job_step = ipr_reset_bist_done;
8516 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8517 rc = IPR_RC_JOB_RETURN;
8518 } else {
8519 if (ioa_cfg->cfg_locked)
8520 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8521 ioa_cfg->cfg_locked = 0;
8522 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8523 rc = IPR_RC_JOB_CONTINUE;
8524 }
8525
8526 LEAVE;
8527 return rc;
8528 }
8529
8530 /**
8531 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8532 * @ipr_cmd: ipr command struct
8533 *
8534 * Description: This clears PCI reset to the adapter and delays two seconds.
8535 *
8536 * Return value:
8537 * IPR_RC_JOB_RETURN
8538 **/
8539 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8540 {
8541 ENTER;
8542 ipr_cmd->job_step = ipr_reset_bist_done;
8543 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8544 LEAVE;
8545 return IPR_RC_JOB_RETURN;
8546 }
8547
8548 /**
8549 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8550 * @work: work struct
8551 *
8552 * Description: This pulses warm reset to a slot.
8553 *
8554 **/
8555 static void ipr_reset_reset_work(struct work_struct *work)
8556 {
8557 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8558 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8559 struct pci_dev *pdev = ioa_cfg->pdev;
8560 unsigned long lock_flags = 0;
8561
8562 ENTER;
8563 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8564 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8565 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8566
8567 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8568 if (ioa_cfg->reset_cmd == ipr_cmd)
8569 ipr_reset_ioa_job(ipr_cmd);
8570 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8571 LEAVE;
8572 }
8573
8574 /**
8575 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8576 * @ipr_cmd: ipr command struct
8577 *
8578 * Description: This asserts PCI reset to the adapter.
8579 *
8580 * Return value:
8581 * IPR_RC_JOB_RETURN
8582 **/
8583 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8584 {
8585 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8586
8587 ENTER;
8588 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8589 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8590 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8591 LEAVE;
8592 return IPR_RC_JOB_RETURN;
8593 }
8594
8595 /**
8596 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8597 * @ipr_cmd: ipr command struct
8598 *
8599 * Description: This attempts to block config access to the IOA.
8600 *
8601 * Return value:
8602 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8603 **/
8604 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8605 {
8606 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8607 int rc = IPR_RC_JOB_CONTINUE;
8608
8609 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8610 ioa_cfg->cfg_locked = 1;
8611 ipr_cmd->job_step = ioa_cfg->reset;
8612 } else {
8613 if (ipr_cmd->u.time_left) {
8614 rc = IPR_RC_JOB_RETURN;
8615 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8616 ipr_reset_start_timer(ipr_cmd,
8617 IPR_CHECK_FOR_RESET_TIMEOUT);
8618 } else {
8619 ipr_cmd->job_step = ioa_cfg->reset;
8620 dev_err(&ioa_cfg->pdev->dev,
8621 "Timed out waiting to lock config access. Resetting anyway.\n");
8622 }
8623 }
8624
8625 return rc;
8626 }
8627
8628 /**
8629 * ipr_reset_block_config_access - Block config access to the IOA
8630 * @ipr_cmd: ipr command struct
8631 *
8632 * Description: This attempts to block config access to the IOA
8633 *
8634 * Return value:
8635 * IPR_RC_JOB_CONTINUE
8636 **/
8637 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8638 {
8639 ipr_cmd->ioa_cfg->cfg_locked = 0;
8640 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8641 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8642 return IPR_RC_JOB_CONTINUE;
8643 }
8644
8645 /**
8646 * ipr_reset_allowed - Query whether or not IOA can be reset
8647 * @ioa_cfg: ioa config struct
8648 *
8649 * Return value:
8650 * 0 if reset not allowed / non-zero if reset is allowed
8651 **/
8652 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8653 {
8654 volatile u32 temp_reg;
8655
8656 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8657 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8658 }
8659
8660 /**
8661 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8662 * @ipr_cmd: ipr command struct
8663 *
8664 * Description: This function waits for adapter permission to run BIST,
8665 * then runs BIST. If the adapter does not give permission after a
8666 * reasonable time, we will reset the adapter anyway. The impact of
8667 * resetting the adapter without warning the adapter is the risk of
8668 * losing the persistent error log on the adapter. If the adapter is
8669 * reset while it is writing to the flash on the adapter, the flash
8670 * segment will have bad ECC and be zeroed.
8671 *
8672 * Return value:
8673 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8674 **/
8675 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8676 {
8677 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8678 int rc = IPR_RC_JOB_RETURN;
8679
8680 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8681 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8682 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8683 } else {
8684 ipr_cmd->job_step = ipr_reset_block_config_access;
8685 rc = IPR_RC_JOB_CONTINUE;
8686 }
8687
8688 return rc;
8689 }
8690
8691 /**
8692 * ipr_reset_alert - Alert the adapter of a pending reset
8693 * @ipr_cmd: ipr command struct
8694 *
8695 * Description: This function alerts the adapter that it will be reset.
8696 * If memory space is not currently enabled, proceed directly
8697 * to running BIST on the adapter. The timer must always be started
8698 * so we guarantee we do not run BIST from ipr_isr.
8699 *
8700 * Return value:
8701 * IPR_RC_JOB_RETURN
8702 **/
8703 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8704 {
8705 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8706 u16 cmd_reg;
8707 int rc;
8708
8709 ENTER;
8710 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8711
8712 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8713 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8714 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8715 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8716 } else {
8717 ipr_cmd->job_step = ipr_reset_block_config_access;
8718 }
8719
8720 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8721 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8722
8723 LEAVE;
8724 return IPR_RC_JOB_RETURN;
8725 }
8726
8727 /**
8728 * ipr_reset_quiesce_done - Complete IOA disconnect
8729 * @ipr_cmd: ipr command struct
8730 *
8731 * Description: Freeze the adapter to complete quiesce processing
8732 *
8733 * Return value:
8734 * IPR_RC_JOB_CONTINUE
8735 **/
8736 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8737 {
8738 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8739
8740 ENTER;
8741 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8742 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8743 LEAVE;
8744 return IPR_RC_JOB_CONTINUE;
8745 }
8746
8747 /**
8748 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8749 * @ipr_cmd: ipr command struct
8750 *
8751 * Description: Ensure nothing is outstanding to the IOA and
8752 * proceed with IOA disconnect. Otherwise reset the IOA.
8753 *
8754 * Return value:
8755 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8756 **/
8757 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8758 {
8759 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8760 struct ipr_cmnd *loop_cmd;
8761 struct ipr_hrr_queue *hrrq;
8762 int rc = IPR_RC_JOB_CONTINUE;
8763 int count = 0;
8764
8765 ENTER;
8766 ipr_cmd->job_step = ipr_reset_quiesce_done;
8767
8768 for_each_hrrq(hrrq, ioa_cfg) {
8769 spin_lock(&hrrq->_lock);
8770 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8771 count++;
8772 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8773 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8774 rc = IPR_RC_JOB_RETURN;
8775 break;
8776 }
8777 spin_unlock(&hrrq->_lock);
8778
8779 if (count)
8780 break;
8781 }
8782
8783 LEAVE;
8784 return rc;
8785 }
8786
8787 /**
8788 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8789 * @ipr_cmd: ipr command struct
8790 *
8791 * Description: Cancel any oustanding HCAMs to the IOA.
8792 *
8793 * Return value:
8794 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8795 **/
8796 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8797 {
8798 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8799 int rc = IPR_RC_JOB_CONTINUE;
8800 struct ipr_cmd_pkt *cmd_pkt;
8801 struct ipr_cmnd *hcam_cmd;
8802 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8803
8804 ENTER;
8805 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8806
8807 if (!hrrq->ioa_is_dead) {
8808 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8809 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8810 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8811 continue;
8812
8813 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8814 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8815 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8816 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8817 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8818 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8819 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8820 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8821 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8822 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8823 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8824 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8825 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8826 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8827
8828 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8829 IPR_CANCEL_TIMEOUT);
8830
8831 rc = IPR_RC_JOB_RETURN;
8832 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8833 break;
8834 }
8835 }
8836 } else
8837 ipr_cmd->job_step = ipr_reset_alert;
8838
8839 LEAVE;
8840 return rc;
8841 }
8842
8843 /**
8844 * ipr_reset_ucode_download_done - Microcode download completion
8845 * @ipr_cmd: ipr command struct
8846 *
8847 * Description: This function unmaps the microcode download buffer.
8848 *
8849 * Return value:
8850 * IPR_RC_JOB_CONTINUE
8851 **/
8852 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8853 {
8854 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8855 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8856
8857 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8858 sglist->num_sg, DMA_TO_DEVICE);
8859
8860 ipr_cmd->job_step = ipr_reset_alert;
8861 return IPR_RC_JOB_CONTINUE;
8862 }
8863
8864 /**
8865 * ipr_reset_ucode_download - Download microcode to the adapter
8866 * @ipr_cmd: ipr command struct
8867 *
8868 * Description: This function checks to see if it there is microcode
8869 * to download to the adapter. If there is, a download is performed.
8870 *
8871 * Return value:
8872 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8873 **/
8874 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8875 {
8876 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8877 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8878
8879 ENTER;
8880 ipr_cmd->job_step = ipr_reset_alert;
8881
8882 if (!sglist)
8883 return IPR_RC_JOB_CONTINUE;
8884
8885 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8886 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8887 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8888 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8889 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8890 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8891 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8892
8893 if (ioa_cfg->sis64)
8894 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8895 else
8896 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8897 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8898
8899 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8900 IPR_WRITE_BUFFER_TIMEOUT);
8901
8902 LEAVE;
8903 return IPR_RC_JOB_RETURN;
8904 }
8905
8906 /**
8907 * ipr_reset_shutdown_ioa - Shutdown the adapter
8908 * @ipr_cmd: ipr command struct
8909 *
8910 * Description: This function issues an adapter shutdown of the
8911 * specified type to the specified adapter as part of the
8912 * adapter reset job.
8913 *
8914 * Return value:
8915 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8916 **/
8917 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8918 {
8919 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8920 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8921 unsigned long timeout;
8922 int rc = IPR_RC_JOB_CONTINUE;
8923
8924 ENTER;
8925 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8926 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8927 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8928 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8929 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8930 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8931 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8932 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8933
8934 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8935 timeout = IPR_SHUTDOWN_TIMEOUT;
8936 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8937 timeout = IPR_INTERNAL_TIMEOUT;
8938 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8939 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8940 else
8941 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8942
8943 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8944
8945 rc = IPR_RC_JOB_RETURN;
8946 ipr_cmd->job_step = ipr_reset_ucode_download;
8947 } else
8948 ipr_cmd->job_step = ipr_reset_alert;
8949
8950 LEAVE;
8951 return rc;
8952 }
8953
8954 /**
8955 * ipr_reset_ioa_job - Adapter reset job
8956 * @ipr_cmd: ipr command struct
8957 *
8958 * Description: This function is the job router for the adapter reset job.
8959 *
8960 * Return value:
8961 * none
8962 **/
8963 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8964 {
8965 u32 rc, ioasc;
8966 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8967
8968 do {
8969 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8970
8971 if (ioa_cfg->reset_cmd != ipr_cmd) {
8972 /*
8973 * We are doing nested adapter resets and this is
8974 * not the current reset job.
8975 */
8976 list_add_tail(&ipr_cmd->queue,
8977 &ipr_cmd->hrrq->hrrq_free_q);
8978 return;
8979 }
8980
8981 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8982 rc = ipr_cmd->job_step_failed(ipr_cmd);
8983 if (rc == IPR_RC_JOB_RETURN)
8984 return;
8985 }
8986
8987 ipr_reinit_ipr_cmnd(ipr_cmd);
8988 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8989 rc = ipr_cmd->job_step(ipr_cmd);
8990 } while (rc == IPR_RC_JOB_CONTINUE);
8991 }
8992
8993 /**
8994 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8995 * @ioa_cfg: ioa config struct
8996 * @job_step: first job step of reset job
8997 * @shutdown_type: shutdown type
8998 *
8999 * Description: This function will initiate the reset of the given adapter
9000 * starting at the selected job step.
9001 * If the caller needs to wait on the completion of the reset,
9002 * the caller must sleep on the reset_wait_q.
9003 *
9004 * Return value:
9005 * none
9006 **/
9007 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9008 int (*job_step) (struct ipr_cmnd *),
9009 enum ipr_shutdown_type shutdown_type)
9010 {
9011 struct ipr_cmnd *ipr_cmd;
9012 int i;
9013
9014 ioa_cfg->in_reset_reload = 1;
9015 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9016 spin_lock(&ioa_cfg->hrrq[i]._lock);
9017 ioa_cfg->hrrq[i].allow_cmds = 0;
9018 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9019 }
9020 wmb();
9021 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
9022 scsi_block_requests(ioa_cfg->host);
9023
9024 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9025 ioa_cfg->reset_cmd = ipr_cmd;
9026 ipr_cmd->job_step = job_step;
9027 ipr_cmd->u.shutdown_type = shutdown_type;
9028
9029 ipr_reset_ioa_job(ipr_cmd);
9030 }
9031
9032 /**
9033 * ipr_initiate_ioa_reset - Initiate an adapter reset
9034 * @ioa_cfg: ioa config struct
9035 * @shutdown_type: shutdown type
9036 *
9037 * Description: This function will initiate the reset of the given adapter.
9038 * If the caller needs to wait on the completion of the reset,
9039 * the caller must sleep on the reset_wait_q.
9040 *
9041 * Return value:
9042 * none
9043 **/
9044 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9045 enum ipr_shutdown_type shutdown_type)
9046 {
9047 int i;
9048
9049 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9050 return;
9051
9052 if (ioa_cfg->in_reset_reload) {
9053 if (ioa_cfg->sdt_state == GET_DUMP)
9054 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9055 else if (ioa_cfg->sdt_state == READ_DUMP)
9056 ioa_cfg->sdt_state = ABORT_DUMP;
9057 }
9058
9059 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9060 dev_err(&ioa_cfg->pdev->dev,
9061 "IOA taken offline - error recovery failed\n");
9062
9063 ioa_cfg->reset_retries = 0;
9064 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9065 spin_lock(&ioa_cfg->hrrq[i]._lock);
9066 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9067 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9068 }
9069 wmb();
9070
9071 if (ioa_cfg->in_ioa_bringdown) {
9072 ioa_cfg->reset_cmd = NULL;
9073 ioa_cfg->in_reset_reload = 0;
9074 ipr_fail_all_ops(ioa_cfg);
9075 wake_up_all(&ioa_cfg->reset_wait_q);
9076
9077 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9078 spin_unlock_irq(ioa_cfg->host->host_lock);
9079 scsi_unblock_requests(ioa_cfg->host);
9080 spin_lock_irq(ioa_cfg->host->host_lock);
9081 }
9082 return;
9083 } else {
9084 ioa_cfg->in_ioa_bringdown = 1;
9085 shutdown_type = IPR_SHUTDOWN_NONE;
9086 }
9087 }
9088
9089 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9090 shutdown_type);
9091 }
9092
9093 /**
9094 * ipr_reset_freeze - Hold off all I/O activity
9095 * @ipr_cmd: ipr command struct
9096 *
9097 * Description: If the PCI slot is frozen, hold off all I/O
9098 * activity; then, as soon as the slot is available again,
9099 * initiate an adapter reset.
9100 */
9101 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9102 {
9103 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9104 int i;
9105
9106 /* Disallow new interrupts, avoid loop */
9107 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9108 spin_lock(&ioa_cfg->hrrq[i]._lock);
9109 ioa_cfg->hrrq[i].allow_interrupts = 0;
9110 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9111 }
9112 wmb();
9113 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9114 ipr_cmd->done = ipr_reset_ioa_job;
9115 return IPR_RC_JOB_RETURN;
9116 }
9117
9118 /**
9119 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9120 * @pdev: PCI device struct
9121 *
9122 * Description: This routine is called to tell us that the MMIO
9123 * access to the IOA has been restored
9124 */
9125 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9126 {
9127 unsigned long flags = 0;
9128 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9129
9130 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9131 if (!ioa_cfg->probe_done)
9132 pci_save_state(pdev);
9133 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9134 return PCI_ERS_RESULT_NEED_RESET;
9135 }
9136
9137 /**
9138 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9139 * @pdev: PCI device struct
9140 *
9141 * Description: This routine is called to tell us that the PCI bus
9142 * is down. Can't do anything here, except put the device driver
9143 * into a holding pattern, waiting for the PCI bus to come back.
9144 */
9145 static void ipr_pci_frozen(struct pci_dev *pdev)
9146 {
9147 unsigned long flags = 0;
9148 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9149
9150 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9151 if (ioa_cfg->probe_done)
9152 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9153 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9154 }
9155
9156 /**
9157 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9158 * @pdev: PCI device struct
9159 *
9160 * Description: This routine is called by the pci error recovery
9161 * code after the PCI slot has been reset, just before we
9162 * should resume normal operations.
9163 */
9164 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9165 {
9166 unsigned long flags = 0;
9167 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9168
9169 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9170 if (ioa_cfg->probe_done) {
9171 if (ioa_cfg->needs_warm_reset)
9172 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9173 else
9174 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9175 IPR_SHUTDOWN_NONE);
9176 } else
9177 wake_up_all(&ioa_cfg->eeh_wait_q);
9178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9179 return PCI_ERS_RESULT_RECOVERED;
9180 }
9181
9182 /**
9183 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9184 * @pdev: PCI device struct
9185 *
9186 * Description: This routine is called when the PCI bus has
9187 * permanently failed.
9188 */
9189 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9190 {
9191 unsigned long flags = 0;
9192 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9193 int i;
9194
9195 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9196 if (ioa_cfg->probe_done) {
9197 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9198 ioa_cfg->sdt_state = ABORT_DUMP;
9199 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9200 ioa_cfg->in_ioa_bringdown = 1;
9201 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9202 spin_lock(&ioa_cfg->hrrq[i]._lock);
9203 ioa_cfg->hrrq[i].allow_cmds = 0;
9204 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9205 }
9206 wmb();
9207 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9208 } else
9209 wake_up_all(&ioa_cfg->eeh_wait_q);
9210 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9211 }
9212
9213 /**
9214 * ipr_pci_error_detected - Called when a PCI error is detected.
9215 * @pdev: PCI device struct
9216 * @state: PCI channel state
9217 *
9218 * Description: Called when a PCI error is detected.
9219 *
9220 * Return value:
9221 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9222 */
9223 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9224 pci_channel_state_t state)
9225 {
9226 switch (state) {
9227 case pci_channel_io_frozen:
9228 ipr_pci_frozen(pdev);
9229 return PCI_ERS_RESULT_CAN_RECOVER;
9230 case pci_channel_io_perm_failure:
9231 ipr_pci_perm_failure(pdev);
9232 return PCI_ERS_RESULT_DISCONNECT;
9233 break;
9234 default:
9235 break;
9236 }
9237 return PCI_ERS_RESULT_NEED_RESET;
9238 }
9239
9240 /**
9241 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9242 * @ioa_cfg: ioa cfg struct
9243 *
9244 * Description: This is the second phase of adapter intialization
9245 * This function takes care of initilizing the adapter to the point
9246 * where it can accept new commands.
9247
9248 * Return value:
9249 * 0 on success / -EIO on failure
9250 **/
9251 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9252 {
9253 int rc = 0;
9254 unsigned long host_lock_flags = 0;
9255
9256 ENTER;
9257 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9258 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9259 ioa_cfg->probe_done = 1;
9260 if (ioa_cfg->needs_hard_reset) {
9261 ioa_cfg->needs_hard_reset = 0;
9262 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9263 } else
9264 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9265 IPR_SHUTDOWN_NONE);
9266 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9267
9268 LEAVE;
9269 return rc;
9270 }
9271
9272 /**
9273 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9274 * @ioa_cfg: ioa config struct
9275 *
9276 * Return value:
9277 * none
9278 **/
9279 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9280 {
9281 int i;
9282
9283 if (ioa_cfg->ipr_cmnd_list) {
9284 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9285 if (ioa_cfg->ipr_cmnd_list[i])
9286 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9287 ioa_cfg->ipr_cmnd_list[i],
9288 ioa_cfg->ipr_cmnd_list_dma[i]);
9289
9290 ioa_cfg->ipr_cmnd_list[i] = NULL;
9291 }
9292 }
9293
9294 if (ioa_cfg->ipr_cmd_pool)
9295 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9296
9297 kfree(ioa_cfg->ipr_cmnd_list);
9298 kfree(ioa_cfg->ipr_cmnd_list_dma);
9299 ioa_cfg->ipr_cmnd_list = NULL;
9300 ioa_cfg->ipr_cmnd_list_dma = NULL;
9301 ioa_cfg->ipr_cmd_pool = NULL;
9302 }
9303
9304 /**
9305 * ipr_free_mem - Frees memory allocated for an adapter
9306 * @ioa_cfg: ioa cfg struct
9307 *
9308 * Return value:
9309 * nothing
9310 **/
9311 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9312 {
9313 int i;
9314
9315 kfree(ioa_cfg->res_entries);
9316 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9317 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9318 ipr_free_cmd_blks(ioa_cfg);
9319
9320 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9321 dma_free_coherent(&ioa_cfg->pdev->dev,
9322 sizeof(u32) * ioa_cfg->hrrq[i].size,
9323 ioa_cfg->hrrq[i].host_rrq,
9324 ioa_cfg->hrrq[i].host_rrq_dma);
9325
9326 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9327 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9328
9329 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9330 dma_free_coherent(&ioa_cfg->pdev->dev,
9331 sizeof(struct ipr_hostrcb),
9332 ioa_cfg->hostrcb[i],
9333 ioa_cfg->hostrcb_dma[i]);
9334 }
9335
9336 ipr_free_dump(ioa_cfg);
9337 kfree(ioa_cfg->trace);
9338 }
9339
9340 /**
9341 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9342 * @ioa_cfg: ipr cfg struct
9343 *
9344 * This function frees all allocated IRQs for the
9345 * specified adapter.
9346 *
9347 * Return value:
9348 * none
9349 **/
9350 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9351 {
9352 struct pci_dev *pdev = ioa_cfg->pdev;
9353
9354 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9355 ioa_cfg->intr_flag == IPR_USE_MSIX) {
9356 int i;
9357 for (i = 0; i < ioa_cfg->nvectors; i++)
9358 free_irq(ioa_cfg->vectors_info[i].vec,
9359 &ioa_cfg->hrrq[i]);
9360 } else
9361 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
9362
9363 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9364 pci_disable_msi(pdev);
9365 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9366 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9367 pci_disable_msix(pdev);
9368 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9369 }
9370 }
9371
9372 /**
9373 * ipr_free_all_resources - Free all allocated resources for an adapter.
9374 * @ipr_cmd: ipr command struct
9375 *
9376 * This function frees all allocated resources for the
9377 * specified adapter.
9378 *
9379 * Return value:
9380 * none
9381 **/
9382 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9383 {
9384 struct pci_dev *pdev = ioa_cfg->pdev;
9385
9386 ENTER;
9387 ipr_free_irqs(ioa_cfg);
9388 if (ioa_cfg->reset_work_q)
9389 destroy_workqueue(ioa_cfg->reset_work_q);
9390 iounmap(ioa_cfg->hdw_dma_regs);
9391 pci_release_regions(pdev);
9392 ipr_free_mem(ioa_cfg);
9393 scsi_host_put(ioa_cfg->host);
9394 pci_disable_device(pdev);
9395 LEAVE;
9396 }
9397
9398 /**
9399 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9400 * @ioa_cfg: ioa config struct
9401 *
9402 * Return value:
9403 * 0 on success / -ENOMEM on allocation failure
9404 **/
9405 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9406 {
9407 struct ipr_cmnd *ipr_cmd;
9408 struct ipr_ioarcb *ioarcb;
9409 dma_addr_t dma_addr;
9410 int i, entries_each_hrrq, hrrq_id = 0;
9411
9412 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9413 sizeof(struct ipr_cmnd), 512, 0);
9414
9415 if (!ioa_cfg->ipr_cmd_pool)
9416 return -ENOMEM;
9417
9418 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9419 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9420
9421 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9422 ipr_free_cmd_blks(ioa_cfg);
9423 return -ENOMEM;
9424 }
9425
9426 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9427 if (ioa_cfg->hrrq_num > 1) {
9428 if (i == 0) {
9429 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9430 ioa_cfg->hrrq[i].min_cmd_id = 0;
9431 ioa_cfg->hrrq[i].max_cmd_id =
9432 (entries_each_hrrq - 1);
9433 } else {
9434 entries_each_hrrq =
9435 IPR_NUM_BASE_CMD_BLKS/
9436 (ioa_cfg->hrrq_num - 1);
9437 ioa_cfg->hrrq[i].min_cmd_id =
9438 IPR_NUM_INTERNAL_CMD_BLKS +
9439 (i - 1) * entries_each_hrrq;
9440 ioa_cfg->hrrq[i].max_cmd_id =
9441 (IPR_NUM_INTERNAL_CMD_BLKS +
9442 i * entries_each_hrrq - 1);
9443 }
9444 } else {
9445 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9446 ioa_cfg->hrrq[i].min_cmd_id = 0;
9447 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9448 }
9449 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9450 }
9451
9452 BUG_ON(ioa_cfg->hrrq_num == 0);
9453
9454 i = IPR_NUM_CMD_BLKS -
9455 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9456 if (i > 0) {
9457 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9458 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9459 }
9460
9461 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9462 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9463
9464 if (!ipr_cmd) {
9465 ipr_free_cmd_blks(ioa_cfg);
9466 return -ENOMEM;
9467 }
9468
9469 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9470 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9471 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9472
9473 ioarcb = &ipr_cmd->ioarcb;
9474 ipr_cmd->dma_addr = dma_addr;
9475 if (ioa_cfg->sis64)
9476 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9477 else
9478 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9479
9480 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9481 if (ioa_cfg->sis64) {
9482 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9483 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9484 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9485 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9486 } else {
9487 ioarcb->write_ioadl_addr =
9488 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9489 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9490 ioarcb->ioasa_host_pci_addr =
9491 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9492 }
9493 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9494 ipr_cmd->cmd_index = i;
9495 ipr_cmd->ioa_cfg = ioa_cfg;
9496 ipr_cmd->sense_buffer_dma = dma_addr +
9497 offsetof(struct ipr_cmnd, sense_buffer);
9498
9499 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9500 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9501 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9502 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9503 hrrq_id++;
9504 }
9505
9506 return 0;
9507 }
9508
9509 /**
9510 * ipr_alloc_mem - Allocate memory for an adapter
9511 * @ioa_cfg: ioa config struct
9512 *
9513 * Return value:
9514 * 0 on success / non-zero for error
9515 **/
9516 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9517 {
9518 struct pci_dev *pdev = ioa_cfg->pdev;
9519 int i, rc = -ENOMEM;
9520
9521 ENTER;
9522 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9523 ioa_cfg->max_devs_supported, GFP_KERNEL);
9524
9525 if (!ioa_cfg->res_entries)
9526 goto out;
9527
9528 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9529 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9530 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9531 }
9532
9533 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9534 sizeof(struct ipr_misc_cbs),
9535 &ioa_cfg->vpd_cbs_dma,
9536 GFP_KERNEL);
9537
9538 if (!ioa_cfg->vpd_cbs)
9539 goto out_free_res_entries;
9540
9541 if (ipr_alloc_cmd_blks(ioa_cfg))
9542 goto out_free_vpd_cbs;
9543
9544 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9545 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9546 sizeof(u32) * ioa_cfg->hrrq[i].size,
9547 &ioa_cfg->hrrq[i].host_rrq_dma,
9548 GFP_KERNEL);
9549
9550 if (!ioa_cfg->hrrq[i].host_rrq) {
9551 while (--i > 0)
9552 dma_free_coherent(&pdev->dev,
9553 sizeof(u32) * ioa_cfg->hrrq[i].size,
9554 ioa_cfg->hrrq[i].host_rrq,
9555 ioa_cfg->hrrq[i].host_rrq_dma);
9556 goto out_ipr_free_cmd_blocks;
9557 }
9558 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9559 }
9560
9561 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9562 ioa_cfg->cfg_table_size,
9563 &ioa_cfg->cfg_table_dma,
9564 GFP_KERNEL);
9565
9566 if (!ioa_cfg->u.cfg_table)
9567 goto out_free_host_rrq;
9568
9569 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9570 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9571 sizeof(struct ipr_hostrcb),
9572 &ioa_cfg->hostrcb_dma[i],
9573 GFP_KERNEL);
9574
9575 if (!ioa_cfg->hostrcb[i])
9576 goto out_free_hostrcb_dma;
9577
9578 ioa_cfg->hostrcb[i]->hostrcb_dma =
9579 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9580 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9581 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9582 }
9583
9584 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9585 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9586
9587 if (!ioa_cfg->trace)
9588 goto out_free_hostrcb_dma;
9589
9590 rc = 0;
9591 out:
9592 LEAVE;
9593 return rc;
9594
9595 out_free_hostrcb_dma:
9596 while (i-- > 0) {
9597 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9598 ioa_cfg->hostrcb[i],
9599 ioa_cfg->hostrcb_dma[i]);
9600 }
9601 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9602 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9603 out_free_host_rrq:
9604 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9605 dma_free_coherent(&pdev->dev,
9606 sizeof(u32) * ioa_cfg->hrrq[i].size,
9607 ioa_cfg->hrrq[i].host_rrq,
9608 ioa_cfg->hrrq[i].host_rrq_dma);
9609 }
9610 out_ipr_free_cmd_blocks:
9611 ipr_free_cmd_blks(ioa_cfg);
9612 out_free_vpd_cbs:
9613 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9614 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9615 out_free_res_entries:
9616 kfree(ioa_cfg->res_entries);
9617 goto out;
9618 }
9619
9620 /**
9621 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9622 * @ioa_cfg: ioa config struct
9623 *
9624 * Return value:
9625 * none
9626 **/
9627 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9628 {
9629 int i;
9630
9631 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9632 ioa_cfg->bus_attr[i].bus = i;
9633 ioa_cfg->bus_attr[i].qas_enabled = 0;
9634 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9635 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9636 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9637 else
9638 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9639 }
9640 }
9641
9642 /**
9643 * ipr_init_regs - Initialize IOA registers
9644 * @ioa_cfg: ioa config struct
9645 *
9646 * Return value:
9647 * none
9648 **/
9649 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9650 {
9651 const struct ipr_interrupt_offsets *p;
9652 struct ipr_interrupts *t;
9653 void __iomem *base;
9654
9655 p = &ioa_cfg->chip_cfg->regs;
9656 t = &ioa_cfg->regs;
9657 base = ioa_cfg->hdw_dma_regs;
9658
9659 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9660 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9661 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9662 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9663 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9664 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9665 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9666 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9667 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9668 t->ioarrin_reg = base + p->ioarrin_reg;
9669 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9670 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9671 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9672 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9673 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9674 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9675
9676 if (ioa_cfg->sis64) {
9677 t->init_feedback_reg = base + p->init_feedback_reg;
9678 t->dump_addr_reg = base + p->dump_addr_reg;
9679 t->dump_data_reg = base + p->dump_data_reg;
9680 t->endian_swap_reg = base + p->endian_swap_reg;
9681 }
9682 }
9683
9684 /**
9685 * ipr_init_ioa_cfg - Initialize IOA config struct
9686 * @ioa_cfg: ioa config struct
9687 * @host: scsi host struct
9688 * @pdev: PCI dev struct
9689 *
9690 * Return value:
9691 * none
9692 **/
9693 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9694 struct Scsi_Host *host, struct pci_dev *pdev)
9695 {
9696 int i;
9697
9698 ioa_cfg->host = host;
9699 ioa_cfg->pdev = pdev;
9700 ioa_cfg->log_level = ipr_log_level;
9701 ioa_cfg->doorbell = IPR_DOORBELL;
9702 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9703 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9704 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9705 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9706 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9707 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9708
9709 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9710 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9711 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9712 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9713 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9714 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9715 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9716 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9717 ioa_cfg->sdt_state = INACTIVE;
9718
9719 ipr_initialize_bus_attr(ioa_cfg);
9720 ioa_cfg->max_devs_supported = ipr_max_devs;
9721
9722 if (ioa_cfg->sis64) {
9723 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9724 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9725 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9726 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9727 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9728 + ((sizeof(struct ipr_config_table_entry64)
9729 * ioa_cfg->max_devs_supported)));
9730 } else {
9731 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9732 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9733 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9734 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9735 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9736 + ((sizeof(struct ipr_config_table_entry)
9737 * ioa_cfg->max_devs_supported)));
9738 }
9739
9740 host->max_channel = IPR_VSET_BUS;
9741 host->unique_id = host->host_no;
9742 host->max_cmd_len = IPR_MAX_CDB_LEN;
9743 host->can_queue = ioa_cfg->max_cmds;
9744 pci_set_drvdata(pdev, ioa_cfg);
9745
9746 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9747 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9748 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9749 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9750 if (i == 0)
9751 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9752 else
9753 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9754 }
9755 }
9756
9757 /**
9758 * ipr_get_chip_info - Find adapter chip information
9759 * @dev_id: PCI device id struct
9760 *
9761 * Return value:
9762 * ptr to chip information on success / NULL on failure
9763 **/
9764 static const struct ipr_chip_t *
9765 ipr_get_chip_info(const struct pci_device_id *dev_id)
9766 {
9767 int i;
9768
9769 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9770 if (ipr_chip[i].vendor == dev_id->vendor &&
9771 ipr_chip[i].device == dev_id->device)
9772 return &ipr_chip[i];
9773 return NULL;
9774 }
9775
9776 /**
9777 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9778 * during probe time
9779 * @ioa_cfg: ioa config struct
9780 *
9781 * Return value:
9782 * None
9783 **/
9784 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9785 {
9786 struct pci_dev *pdev = ioa_cfg->pdev;
9787
9788 if (pci_channel_offline(pdev)) {
9789 wait_event_timeout(ioa_cfg->eeh_wait_q,
9790 !pci_channel_offline(pdev),
9791 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9792 pci_restore_state(pdev);
9793 }
9794 }
9795
9796 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9797 {
9798 struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9799 int i, vectors;
9800
9801 for (i = 0; i < ARRAY_SIZE(entries); ++i)
9802 entries[i].entry = i;
9803
9804 vectors = pci_enable_msix_range(ioa_cfg->pdev,
9805 entries, 1, ipr_number_of_msix);
9806 if (vectors < 0) {
9807 ipr_wait_for_pci_err_recovery(ioa_cfg);
9808 return vectors;
9809 }
9810
9811 for (i = 0; i < vectors; i++)
9812 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9813 ioa_cfg->nvectors = vectors;
9814
9815 return 0;
9816 }
9817
9818 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9819 {
9820 int i, vectors;
9821
9822 vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9823 if (vectors < 0) {
9824 ipr_wait_for_pci_err_recovery(ioa_cfg);
9825 return vectors;
9826 }
9827
9828 for (i = 0; i < vectors; i++)
9829 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9830 ioa_cfg->nvectors = vectors;
9831
9832 return 0;
9833 }
9834
9835 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9836 {
9837 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9838
9839 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9840 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9841 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9842 ioa_cfg->vectors_info[vec_idx].
9843 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9844 }
9845 }
9846
9847 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9848 {
9849 int i, rc;
9850
9851 for (i = 1; i < ioa_cfg->nvectors; i++) {
9852 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9853 ipr_isr_mhrrq,
9854 0,
9855 ioa_cfg->vectors_info[i].desc,
9856 &ioa_cfg->hrrq[i]);
9857 if (rc) {
9858 while (--i >= 0)
9859 free_irq(ioa_cfg->vectors_info[i].vec,
9860 &ioa_cfg->hrrq[i]);
9861 return rc;
9862 }
9863 }
9864 return 0;
9865 }
9866
9867 /**
9868 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9869 * @pdev: PCI device struct
9870 *
9871 * Description: Simply set the msi_received flag to 1 indicating that
9872 * Message Signaled Interrupts are supported.
9873 *
9874 * Return value:
9875 * 0 on success / non-zero on failure
9876 **/
9877 static irqreturn_t ipr_test_intr(int irq, void *devp)
9878 {
9879 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9880 unsigned long lock_flags = 0;
9881 irqreturn_t rc = IRQ_HANDLED;
9882
9883 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9884 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9885
9886 ioa_cfg->msi_received = 1;
9887 wake_up(&ioa_cfg->msi_wait_q);
9888
9889 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9890 return rc;
9891 }
9892
9893 /**
9894 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9895 * @pdev: PCI device struct
9896 *
9897 * Description: The return value from pci_enable_msi_range() can not always be
9898 * trusted. This routine sets up and initiates a test interrupt to determine
9899 * if the interrupt is received via the ipr_test_intr() service routine.
9900 * If the tests fails, the driver will fall back to LSI.
9901 *
9902 * Return value:
9903 * 0 on success / non-zero on failure
9904 **/
9905 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9906 {
9907 int rc;
9908 volatile u32 int_reg;
9909 unsigned long lock_flags = 0;
9910
9911 ENTER;
9912
9913 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9914 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9915 ioa_cfg->msi_received = 0;
9916 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9917 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9918 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9919 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9920
9921 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9922 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9923 else
9924 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9925 if (rc) {
9926 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9927 return rc;
9928 } else if (ipr_debug)
9929 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9930
9931 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9932 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9933 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9934 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9935 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9936
9937 if (!ioa_cfg->msi_received) {
9938 /* MSI test failed */
9939 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9940 rc = -EOPNOTSUPP;
9941 } else if (ipr_debug)
9942 dev_info(&pdev->dev, "MSI test succeeded.\n");
9943
9944 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9945
9946 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9947 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9948 else
9949 free_irq(pdev->irq, ioa_cfg);
9950
9951 LEAVE;
9952
9953 return rc;
9954 }
9955
9956 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9957 * @pdev: PCI device struct
9958 * @dev_id: PCI device id struct
9959 *
9960 * Return value:
9961 * 0 on success / non-zero on failure
9962 **/
9963 static int ipr_probe_ioa(struct pci_dev *pdev,
9964 const struct pci_device_id *dev_id)
9965 {
9966 struct ipr_ioa_cfg *ioa_cfg;
9967 struct Scsi_Host *host;
9968 unsigned long ipr_regs_pci;
9969 void __iomem *ipr_regs;
9970 int rc = PCIBIOS_SUCCESSFUL;
9971 volatile u32 mask, uproc, interrupts;
9972 unsigned long lock_flags, driver_lock_flags;
9973
9974 ENTER;
9975
9976 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9977 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9978
9979 if (!host) {
9980 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9981 rc = -ENOMEM;
9982 goto out;
9983 }
9984
9985 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9986 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9987 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9988
9989 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9990
9991 if (!ioa_cfg->ipr_chip) {
9992 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9993 dev_id->vendor, dev_id->device);
9994 goto out_scsi_host_put;
9995 }
9996
9997 /* set SIS 32 or SIS 64 */
9998 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9999 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
10000 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
10001 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10002
10003 if (ipr_transop_timeout)
10004 ioa_cfg->transop_timeout = ipr_transop_timeout;
10005 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10006 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10007 else
10008 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10009
10010 ioa_cfg->revid = pdev->revision;
10011
10012 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10013
10014 ipr_regs_pci = pci_resource_start(pdev, 0);
10015
10016 rc = pci_request_regions(pdev, IPR_NAME);
10017 if (rc < 0) {
10018 dev_err(&pdev->dev,
10019 "Couldn't register memory range of registers\n");
10020 goto out_scsi_host_put;
10021 }
10022
10023 rc = pci_enable_device(pdev);
10024
10025 if (rc || pci_channel_offline(pdev)) {
10026 if (pci_channel_offline(pdev)) {
10027 ipr_wait_for_pci_err_recovery(ioa_cfg);
10028 rc = pci_enable_device(pdev);
10029 }
10030
10031 if (rc) {
10032 dev_err(&pdev->dev, "Cannot enable adapter\n");
10033 ipr_wait_for_pci_err_recovery(ioa_cfg);
10034 goto out_release_regions;
10035 }
10036 }
10037
10038 ipr_regs = pci_ioremap_bar(pdev, 0);
10039
10040 if (!ipr_regs) {
10041 dev_err(&pdev->dev,
10042 "Couldn't map memory range of registers\n");
10043 rc = -ENOMEM;
10044 goto out_disable;
10045 }
10046
10047 ioa_cfg->hdw_dma_regs = ipr_regs;
10048 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10049 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10050
10051 ipr_init_regs(ioa_cfg);
10052
10053 if (ioa_cfg->sis64) {
10054 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10055 if (rc < 0) {
10056 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10057 rc = dma_set_mask_and_coherent(&pdev->dev,
10058 DMA_BIT_MASK(32));
10059 }
10060 } else
10061 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10062
10063 if (rc < 0) {
10064 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10065 goto cleanup_nomem;
10066 }
10067
10068 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10069 ioa_cfg->chip_cfg->cache_line_size);
10070
10071 if (rc != PCIBIOS_SUCCESSFUL) {
10072 dev_err(&pdev->dev, "Write of cache line size failed\n");
10073 ipr_wait_for_pci_err_recovery(ioa_cfg);
10074 rc = -EIO;
10075 goto cleanup_nomem;
10076 }
10077
10078 /* Issue MMIO read to ensure card is not in EEH */
10079 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10080 ipr_wait_for_pci_err_recovery(ioa_cfg);
10081
10082 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10083 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10084 IPR_MAX_MSIX_VECTORS);
10085 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10086 }
10087
10088 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10089 ipr_enable_msix(ioa_cfg) == 0)
10090 ioa_cfg->intr_flag = IPR_USE_MSIX;
10091 else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10092 ipr_enable_msi(ioa_cfg) == 0)
10093 ioa_cfg->intr_flag = IPR_USE_MSI;
10094 else {
10095 ioa_cfg->intr_flag = IPR_USE_LSI;
10096 ioa_cfg->nvectors = 1;
10097 dev_info(&pdev->dev, "Cannot enable MSI.\n");
10098 }
10099
10100 pci_set_master(pdev);
10101
10102 if (pci_channel_offline(pdev)) {
10103 ipr_wait_for_pci_err_recovery(ioa_cfg);
10104 pci_set_master(pdev);
10105 if (pci_channel_offline(pdev)) {
10106 rc = -EIO;
10107 goto out_msi_disable;
10108 }
10109 }
10110
10111 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
10112 ioa_cfg->intr_flag == IPR_USE_MSIX) {
10113 rc = ipr_test_msi(ioa_cfg, pdev);
10114 if (rc == -EOPNOTSUPP) {
10115 ipr_wait_for_pci_err_recovery(ioa_cfg);
10116 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
10117 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
10118 pci_disable_msi(pdev);
10119 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
10120 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
10121 pci_disable_msix(pdev);
10122 }
10123
10124 ioa_cfg->intr_flag = IPR_USE_LSI;
10125 ioa_cfg->nvectors = 1;
10126 }
10127 else if (rc)
10128 goto out_msi_disable;
10129 else {
10130 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10131 dev_info(&pdev->dev,
10132 "Request for %d MSIs succeeded with starting IRQ: %d\n",
10133 ioa_cfg->nvectors, pdev->irq);
10134 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10135 dev_info(&pdev->dev,
10136 "Request for %d MSIXs succeeded.",
10137 ioa_cfg->nvectors);
10138 }
10139 }
10140
10141 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10142 (unsigned int)num_online_cpus(),
10143 (unsigned int)IPR_MAX_HRRQ_NUM);
10144
10145 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10146 goto out_msi_disable;
10147
10148 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10149 goto out_msi_disable;
10150
10151 rc = ipr_alloc_mem(ioa_cfg);
10152 if (rc < 0) {
10153 dev_err(&pdev->dev,
10154 "Couldn't allocate enough memory for device driver!\n");
10155 goto out_msi_disable;
10156 }
10157
10158 /* Save away PCI config space for use following IOA reset */
10159 rc = pci_save_state(pdev);
10160
10161 if (rc != PCIBIOS_SUCCESSFUL) {
10162 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10163 rc = -EIO;
10164 goto cleanup_nolog;
10165 }
10166
10167 /*
10168 * If HRRQ updated interrupt is not masked, or reset alert is set,
10169 * the card is in an unknown state and needs a hard reset
10170 */
10171 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10172 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10173 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10174 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10175 ioa_cfg->needs_hard_reset = 1;
10176 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10177 ioa_cfg->needs_hard_reset = 1;
10178 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10179 ioa_cfg->ioa_unit_checked = 1;
10180
10181 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10182 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10183 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10184
10185 if (ioa_cfg->intr_flag == IPR_USE_MSI
10186 || ioa_cfg->intr_flag == IPR_USE_MSIX) {
10187 name_msi_vectors(ioa_cfg);
10188 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
10189 0,
10190 ioa_cfg->vectors_info[0].desc,
10191 &ioa_cfg->hrrq[0]);
10192 if (!rc)
10193 rc = ipr_request_other_msi_irqs(ioa_cfg);
10194 } else {
10195 rc = request_irq(pdev->irq, ipr_isr,
10196 IRQF_SHARED,
10197 IPR_NAME, &ioa_cfg->hrrq[0]);
10198 }
10199 if (rc) {
10200 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10201 pdev->irq, rc);
10202 goto cleanup_nolog;
10203 }
10204
10205 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10206 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10207 ioa_cfg->needs_warm_reset = 1;
10208 ioa_cfg->reset = ipr_reset_slot_reset;
10209
10210 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10211 WQ_MEM_RECLAIM, host->host_no);
10212
10213 if (!ioa_cfg->reset_work_q) {
10214 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10215 goto out_free_irq;
10216 }
10217 } else
10218 ioa_cfg->reset = ipr_reset_start_bist;
10219
10220 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10221 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10222 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10223
10224 LEAVE;
10225 out:
10226 return rc;
10227
10228 out_free_irq:
10229 ipr_free_irqs(ioa_cfg);
10230 cleanup_nolog:
10231 ipr_free_mem(ioa_cfg);
10232 out_msi_disable:
10233 ipr_wait_for_pci_err_recovery(ioa_cfg);
10234 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10235 pci_disable_msi(pdev);
10236 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10237 pci_disable_msix(pdev);
10238 cleanup_nomem:
10239 iounmap(ipr_regs);
10240 out_disable:
10241 pci_disable_device(pdev);
10242 out_release_regions:
10243 pci_release_regions(pdev);
10244 out_scsi_host_put:
10245 scsi_host_put(host);
10246 goto out;
10247 }
10248
10249 /**
10250 * ipr_initiate_ioa_bringdown - Bring down an adapter
10251 * @ioa_cfg: ioa config struct
10252 * @shutdown_type: shutdown type
10253 *
10254 * Description: This function will initiate bringing down the adapter.
10255 * This consists of issuing an IOA shutdown to the adapter
10256 * to flush the cache, and running BIST.
10257 * If the caller needs to wait on the completion of the reset,
10258 * the caller must sleep on the reset_wait_q.
10259 *
10260 * Return value:
10261 * none
10262 **/
10263 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10264 enum ipr_shutdown_type shutdown_type)
10265 {
10266 ENTER;
10267 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10268 ioa_cfg->sdt_state = ABORT_DUMP;
10269 ioa_cfg->reset_retries = 0;
10270 ioa_cfg->in_ioa_bringdown = 1;
10271 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10272 LEAVE;
10273 }
10274
10275 /**
10276 * __ipr_remove - Remove a single adapter
10277 * @pdev: pci device struct
10278 *
10279 * Adapter hot plug remove entry point.
10280 *
10281 * Return value:
10282 * none
10283 **/
10284 static void __ipr_remove(struct pci_dev *pdev)
10285 {
10286 unsigned long host_lock_flags = 0;
10287 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10288 int i;
10289 unsigned long driver_lock_flags;
10290 ENTER;
10291
10292 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10293 while (ioa_cfg->in_reset_reload) {
10294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10295 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10296 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10297 }
10298
10299 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10300 spin_lock(&ioa_cfg->hrrq[i]._lock);
10301 ioa_cfg->hrrq[i].removing_ioa = 1;
10302 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10303 }
10304 wmb();
10305 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10306
10307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10308 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10309 flush_work(&ioa_cfg->work_q);
10310 if (ioa_cfg->reset_work_q)
10311 flush_workqueue(ioa_cfg->reset_work_q);
10312 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10313 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10314
10315 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10316 list_del(&ioa_cfg->queue);
10317 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10318
10319 if (ioa_cfg->sdt_state == ABORT_DUMP)
10320 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10321 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10322
10323 ipr_free_all_resources(ioa_cfg);
10324
10325 LEAVE;
10326 }
10327
10328 /**
10329 * ipr_remove - IOA hot plug remove entry point
10330 * @pdev: pci device struct
10331 *
10332 * Adapter hot plug remove entry point.
10333 *
10334 * Return value:
10335 * none
10336 **/
10337 static void ipr_remove(struct pci_dev *pdev)
10338 {
10339 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10340
10341 ENTER;
10342
10343 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10344 &ipr_trace_attr);
10345 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10346 &ipr_dump_attr);
10347 scsi_remove_host(ioa_cfg->host);
10348
10349 __ipr_remove(pdev);
10350
10351 LEAVE;
10352 }
10353
10354 /**
10355 * ipr_probe - Adapter hot plug add entry point
10356 *
10357 * Return value:
10358 * 0 on success / non-zero on failure
10359 **/
10360 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10361 {
10362 struct ipr_ioa_cfg *ioa_cfg;
10363 int rc, i;
10364
10365 rc = ipr_probe_ioa(pdev, dev_id);
10366
10367 if (rc)
10368 return rc;
10369
10370 ioa_cfg = pci_get_drvdata(pdev);
10371 rc = ipr_probe_ioa_part2(ioa_cfg);
10372
10373 if (rc) {
10374 __ipr_remove(pdev);
10375 return rc;
10376 }
10377
10378 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10379
10380 if (rc) {
10381 __ipr_remove(pdev);
10382 return rc;
10383 }
10384
10385 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10386 &ipr_trace_attr);
10387
10388 if (rc) {
10389 scsi_remove_host(ioa_cfg->host);
10390 __ipr_remove(pdev);
10391 return rc;
10392 }
10393
10394 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10395 &ipr_dump_attr);
10396
10397 if (rc) {
10398 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10399 &ipr_trace_attr);
10400 scsi_remove_host(ioa_cfg->host);
10401 __ipr_remove(pdev);
10402 return rc;
10403 }
10404
10405 scsi_scan_host(ioa_cfg->host);
10406 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10407
10408 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10409 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10410 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10411 ioa_cfg->iopoll_weight, ipr_iopoll);
10412 }
10413 }
10414
10415 schedule_work(&ioa_cfg->work_q);
10416 return 0;
10417 }
10418
10419 /**
10420 * ipr_shutdown - Shutdown handler.
10421 * @pdev: pci device struct
10422 *
10423 * This function is invoked upon system shutdown/reboot. It will issue
10424 * an adapter shutdown to the adapter to flush the write cache.
10425 *
10426 * Return value:
10427 * none
10428 **/
10429 static void ipr_shutdown(struct pci_dev *pdev)
10430 {
10431 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10432 unsigned long lock_flags = 0;
10433 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10434 int i;
10435
10436 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10437 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10438 ioa_cfg->iopoll_weight = 0;
10439 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10440 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10441 }
10442
10443 while (ioa_cfg->in_reset_reload) {
10444 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10445 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10446 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10447 }
10448
10449 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10450 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10451
10452 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10453 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10454 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10455 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10456 ipr_free_irqs(ioa_cfg);
10457 pci_disable_device(ioa_cfg->pdev);
10458 }
10459 }
10460
10461 static struct pci_device_id ipr_pci_table[] = {
10462 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10463 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10464 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10465 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10466 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10467 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10468 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10469 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10470 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10471 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10472 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10473 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10474 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10475 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10476 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10477 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10478 IPR_USE_LONG_TRANSOP_TIMEOUT },
10479 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10480 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10481 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10482 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10483 IPR_USE_LONG_TRANSOP_TIMEOUT },
10484 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10485 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10486 IPR_USE_LONG_TRANSOP_TIMEOUT },
10487 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10488 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10489 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10490 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10491 IPR_USE_LONG_TRANSOP_TIMEOUT},
10492 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10493 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10494 IPR_USE_LONG_TRANSOP_TIMEOUT },
10495 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10496 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10497 IPR_USE_LONG_TRANSOP_TIMEOUT },
10498 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10499 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10500 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10501 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10502 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10503 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10504 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10505 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10506 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10507 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10508 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10509 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10510 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10511 IPR_USE_LONG_TRANSOP_TIMEOUT },
10512 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10513 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10514 IPR_USE_LONG_TRANSOP_TIMEOUT },
10515 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10516 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10517 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10518 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10519 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10520 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10521 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10522 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10523 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10524 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10525 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10526 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10527 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10528 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10529 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10530 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10531 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10532 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10533 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10534 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10535 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10536 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10537 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10538 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10539 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10540 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10541 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10542 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10543 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10544 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10545 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10546 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10547 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10548 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10549 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10550 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10551 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10553 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10554 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10555 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10556 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10557 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10558 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10559 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10560 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10561 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10562 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10563 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10564 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10565 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10566 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10567 { }
10568 };
10569 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10570
10571 static const struct pci_error_handlers ipr_err_handler = {
10572 .error_detected = ipr_pci_error_detected,
10573 .mmio_enabled = ipr_pci_mmio_enabled,
10574 .slot_reset = ipr_pci_slot_reset,
10575 };
10576
10577 static struct pci_driver ipr_driver = {
10578 .name = IPR_NAME,
10579 .id_table = ipr_pci_table,
10580 .probe = ipr_probe,
10581 .remove = ipr_remove,
10582 .shutdown = ipr_shutdown,
10583 .err_handler = &ipr_err_handler,
10584 };
10585
10586 /**
10587 * ipr_halt_done - Shutdown prepare completion
10588 *
10589 * Return value:
10590 * none
10591 **/
10592 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10593 {
10594 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10595 }
10596
10597 /**
10598 * ipr_halt - Issue shutdown prepare to all adapters
10599 *
10600 * Return value:
10601 * NOTIFY_OK on success / NOTIFY_DONE on failure
10602 **/
10603 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10604 {
10605 struct ipr_cmnd *ipr_cmd;
10606 struct ipr_ioa_cfg *ioa_cfg;
10607 unsigned long flags = 0, driver_lock_flags;
10608
10609 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10610 return NOTIFY_DONE;
10611
10612 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10613
10614 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10615 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10616 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10617 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10618 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10619 continue;
10620 }
10621
10622 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10623 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10624 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10625 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10626 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10627
10628 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10629 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10630 }
10631 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10632
10633 return NOTIFY_OK;
10634 }
10635
10636 static struct notifier_block ipr_notifier = {
10637 ipr_halt, NULL, 0
10638 };
10639
10640 /**
10641 * ipr_init - Module entry point
10642 *
10643 * Return value:
10644 * 0 on success / negative value on failure
10645 **/
10646 static int __init ipr_init(void)
10647 {
10648 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10649 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10650
10651 register_reboot_notifier(&ipr_notifier);
10652 return pci_register_driver(&ipr_driver);
10653 }
10654
10655 /**
10656 * ipr_exit - Module unload
10657 *
10658 * Module unload entry point.
10659 *
10660 * Return value:
10661 * none
10662 **/
10663 static void __exit ipr_exit(void)
10664 {
10665 unregister_reboot_notifier(&ipr_notifier);
10666 pci_unregister_driver(&ipr_driver);
10667 }
10668
10669 module_init(ipr_init);
10670 module_exit(ipr_exit);
Linux with added FPC-III support