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Merge branches '4.5/Or-cleanup' and '4.5/rdma-cq' into k.o/for-4.5
[deliverable/linux.git] / drivers / scsi / ipr.c
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/vmalloc.h>
64 #include <linux/ioport.h>
65 #include <linux/delay.h>
66 #include <linux/pci.h>
67 #include <linux/wait.h>
68 #include <linux/spinlock.h>
69 #include <linux/sched.h>
70 #include <linux/interrupt.h>
71 #include <linux/blkdev.h>
72 #include <linux/firmware.h>
73 #include <linux/module.h>
74 #include <linux/moduleparam.h>
75 #include <linux/libata.h>
76 #include <linux/hdreg.h>
77 #include <linux/reboot.h>
78 #include <linux/stringify.h>
79 #include <asm/io.h>
80 #include <asm/irq.h>
81 #include <asm/processor.h>
82 #include <scsi/scsi.h>
83 #include <scsi/scsi_host.h>
84 #include <scsi/scsi_tcq.h>
85 #include <scsi/scsi_eh.h>
86 #include <scsi/scsi_cmnd.h>
87 #include "ipr.h"
88
89 /*
90 * Global Data
91 */
92 static LIST_HEAD(ipr_ioa_head);
93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94 static unsigned int ipr_max_speed = 1;
95 static int ipr_testmode = 0;
96 static unsigned int ipr_fastfail = 0;
97 static unsigned int ipr_transop_timeout = 0;
98 static unsigned int ipr_debug = 0;
99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
100 static unsigned int ipr_dual_ioa_raid = 1;
101 static unsigned int ipr_number_of_msix = 2;
102 static unsigned int ipr_fast_reboot;
103 static DEFINE_SPINLOCK(ipr_driver_lock);
104
105 /* This table describes the differences between DMA controller chips */
106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
107 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
108 .mailbox = 0x0042C,
109 .max_cmds = 100,
110 .cache_line_size = 0x20,
111 .clear_isr = 1,
112 .iopoll_weight = 0,
113 {
114 .set_interrupt_mask_reg = 0x0022C,
115 .clr_interrupt_mask_reg = 0x00230,
116 .clr_interrupt_mask_reg32 = 0x00230,
117 .sense_interrupt_mask_reg = 0x0022C,
118 .sense_interrupt_mask_reg32 = 0x0022C,
119 .clr_interrupt_reg = 0x00228,
120 .clr_interrupt_reg32 = 0x00228,
121 .sense_interrupt_reg = 0x00224,
122 .sense_interrupt_reg32 = 0x00224,
123 .ioarrin_reg = 0x00404,
124 .sense_uproc_interrupt_reg = 0x00214,
125 .sense_uproc_interrupt_reg32 = 0x00214,
126 .set_uproc_interrupt_reg = 0x00214,
127 .set_uproc_interrupt_reg32 = 0x00214,
128 .clr_uproc_interrupt_reg = 0x00218,
129 .clr_uproc_interrupt_reg32 = 0x00218
130 }
131 },
132 { /* Snipe and Scamp */
133 .mailbox = 0x0052C,
134 .max_cmds = 100,
135 .cache_line_size = 0x20,
136 .clear_isr = 1,
137 .iopoll_weight = 0,
138 {
139 .set_interrupt_mask_reg = 0x00288,
140 .clr_interrupt_mask_reg = 0x0028C,
141 .clr_interrupt_mask_reg32 = 0x0028C,
142 .sense_interrupt_mask_reg = 0x00288,
143 .sense_interrupt_mask_reg32 = 0x00288,
144 .clr_interrupt_reg = 0x00284,
145 .clr_interrupt_reg32 = 0x00284,
146 .sense_interrupt_reg = 0x00280,
147 .sense_interrupt_reg32 = 0x00280,
148 .ioarrin_reg = 0x00504,
149 .sense_uproc_interrupt_reg = 0x00290,
150 .sense_uproc_interrupt_reg32 = 0x00290,
151 .set_uproc_interrupt_reg = 0x00290,
152 .set_uproc_interrupt_reg32 = 0x00290,
153 .clr_uproc_interrupt_reg = 0x00294,
154 .clr_uproc_interrupt_reg32 = 0x00294
155 }
156 },
157 { /* CRoC */
158 .mailbox = 0x00044,
159 .max_cmds = 1000,
160 .cache_line_size = 0x20,
161 .clear_isr = 0,
162 .iopoll_weight = 64,
163 {
164 .set_interrupt_mask_reg = 0x00010,
165 .clr_interrupt_mask_reg = 0x00018,
166 .clr_interrupt_mask_reg32 = 0x0001C,
167 .sense_interrupt_mask_reg = 0x00010,
168 .sense_interrupt_mask_reg32 = 0x00014,
169 .clr_interrupt_reg = 0x00008,
170 .clr_interrupt_reg32 = 0x0000C,
171 .sense_interrupt_reg = 0x00000,
172 .sense_interrupt_reg32 = 0x00004,
173 .ioarrin_reg = 0x00070,
174 .sense_uproc_interrupt_reg = 0x00020,
175 .sense_uproc_interrupt_reg32 = 0x00024,
176 .set_uproc_interrupt_reg = 0x00020,
177 .set_uproc_interrupt_reg32 = 0x00024,
178 .clr_uproc_interrupt_reg = 0x00028,
179 .clr_uproc_interrupt_reg32 = 0x0002C,
180 .init_feedback_reg = 0x0005C,
181 .dump_addr_reg = 0x00064,
182 .dump_data_reg = 0x00068,
183 .endian_swap_reg = 0x00084
184 }
185 },
186 };
187
188 static const struct ipr_chip_t ipr_chip[] = {
189 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
191 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
194 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
195 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
197 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
198 };
199
200 static int ipr_max_bus_speeds[] = {
201 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
202 };
203
204 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
205 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
206 module_param_named(max_speed, ipr_max_speed, uint, 0);
207 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
208 module_param_named(log_level, ipr_log_level, uint, 0);
209 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
210 module_param_named(testmode, ipr_testmode, int, 0);
211 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
212 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
213 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
214 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
215 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
216 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
217 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
218 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
219 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
220 module_param_named(max_devs, ipr_max_devs, int, 0);
221 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
222 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
223 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
224 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:2)");
225 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
226 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
227 MODULE_LICENSE("GPL");
228 MODULE_VERSION(IPR_DRIVER_VERSION);
229
230 /* A constant array of IOASCs/URCs/Error Messages */
231 static const
232 struct ipr_error_table_t ipr_error_table[] = {
233 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
234 "8155: An unknown error was received"},
235 {0x00330000, 0, 0,
236 "Soft underlength error"},
237 {0x005A0000, 0, 0,
238 "Command to be cancelled not found"},
239 {0x00808000, 0, 0,
240 "Qualified success"},
241 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
242 "FFFE: Soft device bus error recovered by the IOA"},
243 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
244 "4101: Soft device bus fabric error"},
245 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
246 "FFFC: Logical block guard error recovered by the device"},
247 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
248 "FFFC: Logical block reference tag error recovered by the device"},
249 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
250 "4171: Recovered scatter list tag / sequence number error"},
251 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
252 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
253 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
254 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
255 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
256 "FFFD: Recovered logical block reference tag error detected by the IOA"},
257 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
258 "FFFD: Logical block guard error recovered by the IOA"},
259 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
260 "FFF9: Device sector reassign successful"},
261 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
262 "FFF7: Media error recovered by device rewrite procedures"},
263 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
264 "7001: IOA sector reassignment successful"},
265 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
266 "FFF9: Soft media error. Sector reassignment recommended"},
267 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
268 "FFF7: Media error recovered by IOA rewrite procedures"},
269 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
270 "FF3D: Soft PCI bus error recovered by the IOA"},
271 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
272 "FFF6: Device hardware error recovered by the IOA"},
273 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
274 "FFF6: Device hardware error recovered by the device"},
275 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
276 "FF3D: Soft IOA error recovered by the IOA"},
277 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
278 "FFFA: Undefined device response recovered by the IOA"},
279 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
280 "FFF6: Device bus error, message or command phase"},
281 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
282 "FFFE: Task Management Function failed"},
283 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
284 "FFF6: Failure prediction threshold exceeded"},
285 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
286 "8009: Impending cache battery pack failure"},
287 {0x02040100, 0, 0,
288 "Logical Unit in process of becoming ready"},
289 {0x02040200, 0, 0,
290 "Initializing command required"},
291 {0x02040400, 0, 0,
292 "34FF: Disk device format in progress"},
293 {0x02040C00, 0, 0,
294 "Logical unit not accessible, target port in unavailable state"},
295 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
296 "9070: IOA requested reset"},
297 {0x023F0000, 0, 0,
298 "Synchronization required"},
299 {0x02408500, 0, 0,
300 "IOA microcode download required"},
301 {0x02408600, 0, 0,
302 "Device bus connection is prohibited by host"},
303 {0x024E0000, 0, 0,
304 "No ready, IOA shutdown"},
305 {0x025A0000, 0, 0,
306 "Not ready, IOA has been shutdown"},
307 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
308 "3020: Storage subsystem configuration error"},
309 {0x03110B00, 0, 0,
310 "FFF5: Medium error, data unreadable, recommend reassign"},
311 {0x03110C00, 0, 0,
312 "7000: Medium error, data unreadable, do not reassign"},
313 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
314 "FFF3: Disk media format bad"},
315 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
316 "3002: Addressed device failed to respond to selection"},
317 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
318 "3100: Device bus error"},
319 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
320 "3109: IOA timed out a device command"},
321 {0x04088000, 0, 0,
322 "3120: SCSI bus is not operational"},
323 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
324 "4100: Hard device bus fabric error"},
325 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
326 "310C: Logical block guard error detected by the device"},
327 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
328 "310C: Logical block reference tag error detected by the device"},
329 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
330 "4170: Scatter list tag / sequence number error"},
331 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
332 "8150: Logical block CRC error on IOA to Host transfer"},
333 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
334 "4170: Logical block sequence number error on IOA to Host transfer"},
335 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
336 "310D: Logical block reference tag error detected by the IOA"},
337 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
338 "310D: Logical block guard error detected by the IOA"},
339 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
340 "9000: IOA reserved area data check"},
341 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
342 "9001: IOA reserved area invalid data pattern"},
343 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
344 "9002: IOA reserved area LRC error"},
345 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
346 "Hardware Error, IOA metadata access error"},
347 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
348 "102E: Out of alternate sectors for disk storage"},
349 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
350 "FFF4: Data transfer underlength error"},
351 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
352 "FFF4: Data transfer overlength error"},
353 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
354 "3400: Logical unit failure"},
355 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
356 "FFF4: Device microcode is corrupt"},
357 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
358 "8150: PCI bus error"},
359 {0x04430000, 1, 0,
360 "Unsupported device bus message received"},
361 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
362 "FFF4: Disk device problem"},
363 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
364 "8150: Permanent IOA failure"},
365 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
366 "3010: Disk device returned wrong response to IOA"},
367 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
368 "8151: IOA microcode error"},
369 {0x04448500, 0, 0,
370 "Device bus status error"},
371 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
372 "8157: IOA error requiring IOA reset to recover"},
373 {0x04448700, 0, 0,
374 "ATA device status error"},
375 {0x04490000, 0, 0,
376 "Message reject received from the device"},
377 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
378 "8008: A permanent cache battery pack failure occurred"},
379 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
380 "9090: Disk unit has been modified after the last known status"},
381 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
382 "9081: IOA detected device error"},
383 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
384 "9082: IOA detected device error"},
385 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
386 "3110: Device bus error, message or command phase"},
387 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
388 "3110: SAS Command / Task Management Function failed"},
389 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
390 "9091: Incorrect hardware configuration change has been detected"},
391 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
392 "9073: Invalid multi-adapter configuration"},
393 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
394 "4010: Incorrect connection between cascaded expanders"},
395 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
396 "4020: Connections exceed IOA design limits"},
397 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
398 "4030: Incorrect multipath connection"},
399 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
400 "4110: Unsupported enclosure function"},
401 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
402 "4120: SAS cable VPD cannot be read"},
403 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
404 "FFF4: Command to logical unit failed"},
405 {0x05240000, 1, 0,
406 "Illegal request, invalid request type or request packet"},
407 {0x05250000, 0, 0,
408 "Illegal request, invalid resource handle"},
409 {0x05258000, 0, 0,
410 "Illegal request, commands not allowed to this device"},
411 {0x05258100, 0, 0,
412 "Illegal request, command not allowed to a secondary adapter"},
413 {0x05258200, 0, 0,
414 "Illegal request, command not allowed to a non-optimized resource"},
415 {0x05260000, 0, 0,
416 "Illegal request, invalid field in parameter list"},
417 {0x05260100, 0, 0,
418 "Illegal request, parameter not supported"},
419 {0x05260200, 0, 0,
420 "Illegal request, parameter value invalid"},
421 {0x052C0000, 0, 0,
422 "Illegal request, command sequence error"},
423 {0x052C8000, 1, 0,
424 "Illegal request, dual adapter support not enabled"},
425 {0x052C8100, 1, 0,
426 "Illegal request, another cable connector was physically disabled"},
427 {0x054E8000, 1, 0,
428 "Illegal request, inconsistent group id/group count"},
429 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
430 "9031: Array protection temporarily suspended, protection resuming"},
431 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
432 "9040: Array protection temporarily suspended, protection resuming"},
433 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
434 "4080: IOA exceeded maximum operating temperature"},
435 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
436 "4085: Service required"},
437 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
438 "3140: Device bus not ready to ready transition"},
439 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
440 "FFFB: SCSI bus was reset"},
441 {0x06290500, 0, 0,
442 "FFFE: SCSI bus transition to single ended"},
443 {0x06290600, 0, 0,
444 "FFFE: SCSI bus transition to LVD"},
445 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
446 "FFFB: SCSI bus was reset by another initiator"},
447 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
448 "3029: A device replacement has occurred"},
449 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
450 "4102: Device bus fabric performance degradation"},
451 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
452 "9051: IOA cache data exists for a missing or failed device"},
453 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
454 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
455 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
456 "9025: Disk unit is not supported at its physical location"},
457 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
458 "3020: IOA detected a SCSI bus configuration error"},
459 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
460 "3150: SCSI bus configuration error"},
461 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
462 "9074: Asymmetric advanced function disk configuration"},
463 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
464 "4040: Incomplete multipath connection between IOA and enclosure"},
465 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
466 "4041: Incomplete multipath connection between enclosure and device"},
467 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
468 "9075: Incomplete multipath connection between IOA and remote IOA"},
469 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
470 "9076: Configuration error, missing remote IOA"},
471 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
472 "4050: Enclosure does not support a required multipath function"},
473 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
474 "4121: Configuration error, required cable is missing"},
475 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
476 "4122: Cable is not plugged into the correct location on remote IOA"},
477 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
478 "4123: Configuration error, invalid cable vital product data"},
479 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
480 "4124: Configuration error, both cable ends are plugged into the same IOA"},
481 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
482 "4070: Logically bad block written on device"},
483 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
484 "9041: Array protection temporarily suspended"},
485 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
486 "9042: Corrupt array parity detected on specified device"},
487 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
488 "9030: Array no longer protected due to missing or failed disk unit"},
489 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
490 "9071: Link operational transition"},
491 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
492 "9072: Link not operational transition"},
493 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
494 "9032: Array exposed but still protected"},
495 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
496 "70DD: Device forced failed by disrupt device command"},
497 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
498 "4061: Multipath redundancy level got better"},
499 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
500 "4060: Multipath redundancy level got worse"},
501 {0x06808100, 0, IPR_DEFAULT_LOG_LEVEL,
502 "9083: Device raw mode enabled"},
503 {0x06808200, 0, IPR_DEFAULT_LOG_LEVEL,
504 "9084: Device raw mode disabled"},
505 {0x07270000, 0, 0,
506 "Failure due to other device"},
507 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
508 "9008: IOA does not support functions expected by devices"},
509 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
510 "9010: Cache data associated with attached devices cannot be found"},
511 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
512 "9011: Cache data belongs to devices other than those attached"},
513 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
514 "9020: Array missing 2 or more devices with only 1 device present"},
515 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
516 "9021: Array missing 2 or more devices with 2 or more devices present"},
517 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
518 "9022: Exposed array is missing a required device"},
519 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
520 "9023: Array member(s) not at required physical locations"},
521 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
522 "9024: Array not functional due to present hardware configuration"},
523 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
524 "9026: Array not functional due to present hardware configuration"},
525 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
526 "9027: Array is missing a device and parity is out of sync"},
527 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
528 "9028: Maximum number of arrays already exist"},
529 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
530 "9050: Required cache data cannot be located for a disk unit"},
531 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
532 "9052: Cache data exists for a device that has been modified"},
533 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
534 "9054: IOA resources not available due to previous problems"},
535 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
536 "9092: Disk unit requires initialization before use"},
537 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
538 "9029: Incorrect hardware configuration change has been detected"},
539 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
540 "9060: One or more disk pairs are missing from an array"},
541 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
542 "9061: One or more disks are missing from an array"},
543 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
544 "9062: One or more disks are missing from an array"},
545 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
546 "9063: Maximum number of functional arrays has been exceeded"},
547 {0x07279A00, 0, 0,
548 "Data protect, other volume set problem"},
549 {0x0B260000, 0, 0,
550 "Aborted command, invalid descriptor"},
551 {0x0B3F9000, 0, 0,
552 "Target operating conditions have changed, dual adapter takeover"},
553 {0x0B530200, 0, 0,
554 "Aborted command, medium removal prevented"},
555 {0x0B5A0000, 0, 0,
556 "Command terminated by host"},
557 {0x0B5B8000, 0, 0,
558 "Aborted command, command terminated by host"}
559 };
560
561 static const struct ipr_ses_table_entry ipr_ses_table[] = {
562 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
563 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
564 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
565 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
566 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
567 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
568 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
569 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
570 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
571 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
572 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
573 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
574 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
575 };
576
577 /*
578 * Function Prototypes
579 */
580 static int ipr_reset_alert(struct ipr_cmnd *);
581 static void ipr_process_ccn(struct ipr_cmnd *);
582 static void ipr_process_error(struct ipr_cmnd *);
583 static void ipr_reset_ioa_job(struct ipr_cmnd *);
584 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
585 enum ipr_shutdown_type);
586
587 #ifdef CONFIG_SCSI_IPR_TRACE
588 /**
589 * ipr_trc_hook - Add a trace entry to the driver trace
590 * @ipr_cmd: ipr command struct
591 * @type: trace type
592 * @add_data: additional data
593 *
594 * Return value:
595 * none
596 **/
597 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
598 u8 type, u32 add_data)
599 {
600 struct ipr_trace_entry *trace_entry;
601 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
602 unsigned int trace_index;
603
604 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
605 trace_entry = &ioa_cfg->trace[trace_index];
606 trace_entry->time = jiffies;
607 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
608 trace_entry->type = type;
609 if (ipr_cmd->ioa_cfg->sis64)
610 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
611 else
612 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
613 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
614 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
615 trace_entry->u.add_data = add_data;
616 wmb();
617 }
618 #else
619 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
620 #endif
621
622 /**
623 * ipr_lock_and_done - Acquire lock and complete command
624 * @ipr_cmd: ipr command struct
625 *
626 * Return value:
627 * none
628 **/
629 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
630 {
631 unsigned long lock_flags;
632 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
633
634 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
635 ipr_cmd->done(ipr_cmd);
636 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
637 }
638
639 /**
640 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
641 * @ipr_cmd: ipr command struct
642 *
643 * Return value:
644 * none
645 **/
646 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
647 {
648 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
649 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
650 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
651 dma_addr_t dma_addr = ipr_cmd->dma_addr;
652 int hrrq_id;
653
654 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
655 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
656 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
657 ioarcb->data_transfer_length = 0;
658 ioarcb->read_data_transfer_length = 0;
659 ioarcb->ioadl_len = 0;
660 ioarcb->read_ioadl_len = 0;
661
662 if (ipr_cmd->ioa_cfg->sis64) {
663 ioarcb->u.sis64_addr_data.data_ioadl_addr =
664 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
665 ioasa64->u.gata.status = 0;
666 } else {
667 ioarcb->write_ioadl_addr =
668 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
669 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
670 ioasa->u.gata.status = 0;
671 }
672
673 ioasa->hdr.ioasc = 0;
674 ioasa->hdr.residual_data_len = 0;
675 ipr_cmd->scsi_cmd = NULL;
676 ipr_cmd->qc = NULL;
677 ipr_cmd->sense_buffer[0] = 0;
678 ipr_cmd->dma_use_sg = 0;
679 }
680
681 /**
682 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
683 * @ipr_cmd: ipr command struct
684 *
685 * Return value:
686 * none
687 **/
688 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
689 void (*fast_done) (struct ipr_cmnd *))
690 {
691 ipr_reinit_ipr_cmnd(ipr_cmd);
692 ipr_cmd->u.scratch = 0;
693 ipr_cmd->sibling = NULL;
694 ipr_cmd->eh_comp = NULL;
695 ipr_cmd->fast_done = fast_done;
696 init_timer(&ipr_cmd->timer);
697 }
698
699 /**
700 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
701 * @ioa_cfg: ioa config struct
702 *
703 * Return value:
704 * pointer to ipr command struct
705 **/
706 static
707 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
708 {
709 struct ipr_cmnd *ipr_cmd = NULL;
710
711 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
712 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
713 struct ipr_cmnd, queue);
714 list_del(&ipr_cmd->queue);
715 }
716
717
718 return ipr_cmd;
719 }
720
721 /**
722 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
723 * @ioa_cfg: ioa config struct
724 *
725 * Return value:
726 * pointer to ipr command struct
727 **/
728 static
729 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
730 {
731 struct ipr_cmnd *ipr_cmd =
732 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
733 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
734 return ipr_cmd;
735 }
736
737 /**
738 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
739 * @ioa_cfg: ioa config struct
740 * @clr_ints: interrupts to clear
741 *
742 * This function masks all interrupts on the adapter, then clears the
743 * interrupts specified in the mask
744 *
745 * Return value:
746 * none
747 **/
748 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
749 u32 clr_ints)
750 {
751 volatile u32 int_reg;
752 int i;
753
754 /* Stop new interrupts */
755 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
756 spin_lock(&ioa_cfg->hrrq[i]._lock);
757 ioa_cfg->hrrq[i].allow_interrupts = 0;
758 spin_unlock(&ioa_cfg->hrrq[i]._lock);
759 }
760 wmb();
761
762 /* Set interrupt mask to stop all new interrupts */
763 if (ioa_cfg->sis64)
764 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
765 else
766 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
767
768 /* Clear any pending interrupts */
769 if (ioa_cfg->sis64)
770 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
771 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
772 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
773 }
774
775 /**
776 * ipr_save_pcix_cmd_reg - Save PCI-X command register
777 * @ioa_cfg: ioa config struct
778 *
779 * Return value:
780 * 0 on success / -EIO on failure
781 **/
782 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
783 {
784 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
785
786 if (pcix_cmd_reg == 0)
787 return 0;
788
789 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
790 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
791 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
792 return -EIO;
793 }
794
795 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
796 return 0;
797 }
798
799 /**
800 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
801 * @ioa_cfg: ioa config struct
802 *
803 * Return value:
804 * 0 on success / -EIO on failure
805 **/
806 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
807 {
808 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
809
810 if (pcix_cmd_reg) {
811 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
812 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
813 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
814 return -EIO;
815 }
816 }
817
818 return 0;
819 }
820
821 /**
822 * ipr_sata_eh_done - done function for aborted SATA commands
823 * @ipr_cmd: ipr command struct
824 *
825 * This function is invoked for ops generated to SATA
826 * devices which are being aborted.
827 *
828 * Return value:
829 * none
830 **/
831 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
832 {
833 struct ata_queued_cmd *qc = ipr_cmd->qc;
834 struct ipr_sata_port *sata_port = qc->ap->private_data;
835
836 qc->err_mask |= AC_ERR_OTHER;
837 sata_port->ioasa.status |= ATA_BUSY;
838 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
839 ata_qc_complete(qc);
840 }
841
842 /**
843 * ipr_scsi_eh_done - mid-layer done function for aborted ops
844 * @ipr_cmd: ipr command struct
845 *
846 * This function is invoked by the interrupt handler for
847 * ops generated by the SCSI mid-layer which are being aborted.
848 *
849 * Return value:
850 * none
851 **/
852 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
853 {
854 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
855
856 scsi_cmd->result |= (DID_ERROR << 16);
857
858 scsi_dma_unmap(ipr_cmd->scsi_cmd);
859 scsi_cmd->scsi_done(scsi_cmd);
860 if (ipr_cmd->eh_comp)
861 complete(ipr_cmd->eh_comp);
862 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
863 }
864
865 /**
866 * ipr_fail_all_ops - Fails all outstanding ops.
867 * @ioa_cfg: ioa config struct
868 *
869 * This function fails all outstanding ops.
870 *
871 * Return value:
872 * none
873 **/
874 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
875 {
876 struct ipr_cmnd *ipr_cmd, *temp;
877 struct ipr_hrr_queue *hrrq;
878
879 ENTER;
880 for_each_hrrq(hrrq, ioa_cfg) {
881 spin_lock(&hrrq->_lock);
882 list_for_each_entry_safe(ipr_cmd,
883 temp, &hrrq->hrrq_pending_q, queue) {
884 list_del(&ipr_cmd->queue);
885
886 ipr_cmd->s.ioasa.hdr.ioasc =
887 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
888 ipr_cmd->s.ioasa.hdr.ilid =
889 cpu_to_be32(IPR_DRIVER_ILID);
890
891 if (ipr_cmd->scsi_cmd)
892 ipr_cmd->done = ipr_scsi_eh_done;
893 else if (ipr_cmd->qc)
894 ipr_cmd->done = ipr_sata_eh_done;
895
896 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
897 IPR_IOASC_IOA_WAS_RESET);
898 del_timer(&ipr_cmd->timer);
899 ipr_cmd->done(ipr_cmd);
900 }
901 spin_unlock(&hrrq->_lock);
902 }
903 LEAVE;
904 }
905
906 /**
907 * ipr_send_command - Send driver initiated requests.
908 * @ipr_cmd: ipr command struct
909 *
910 * This function sends a command to the adapter using the correct write call.
911 * In the case of sis64, calculate the ioarcb size required. Then or in the
912 * appropriate bits.
913 *
914 * Return value:
915 * none
916 **/
917 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
918 {
919 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
920 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
921
922 if (ioa_cfg->sis64) {
923 /* The default size is 256 bytes */
924 send_dma_addr |= 0x1;
925
926 /* If the number of ioadls * size of ioadl > 128 bytes,
927 then use a 512 byte ioarcb */
928 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
929 send_dma_addr |= 0x4;
930 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
931 } else
932 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
933 }
934
935 /**
936 * ipr_do_req - Send driver initiated requests.
937 * @ipr_cmd: ipr command struct
938 * @done: done function
939 * @timeout_func: timeout function
940 * @timeout: timeout value
941 *
942 * This function sends the specified command to the adapter with the
943 * timeout given. The done function is invoked on command completion.
944 *
945 * Return value:
946 * none
947 **/
948 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
949 void (*done) (struct ipr_cmnd *),
950 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
951 {
952 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
953
954 ipr_cmd->done = done;
955
956 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
957 ipr_cmd->timer.expires = jiffies + timeout;
958 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
959
960 add_timer(&ipr_cmd->timer);
961
962 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
963
964 ipr_send_command(ipr_cmd);
965 }
966
967 /**
968 * ipr_internal_cmd_done - Op done function for an internally generated op.
969 * @ipr_cmd: ipr command struct
970 *
971 * This function is the op done function for an internally generated,
972 * blocking op. It simply wakes the sleeping thread.
973 *
974 * Return value:
975 * none
976 **/
977 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
978 {
979 if (ipr_cmd->sibling)
980 ipr_cmd->sibling = NULL;
981 else
982 complete(&ipr_cmd->completion);
983 }
984
985 /**
986 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
987 * @ipr_cmd: ipr command struct
988 * @dma_addr: dma address
989 * @len: transfer length
990 * @flags: ioadl flag value
991 *
992 * This function initializes an ioadl in the case where there is only a single
993 * descriptor.
994 *
995 * Return value:
996 * nothing
997 **/
998 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
999 u32 len, int flags)
1000 {
1001 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1002 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1003
1004 ipr_cmd->dma_use_sg = 1;
1005
1006 if (ipr_cmd->ioa_cfg->sis64) {
1007 ioadl64->flags = cpu_to_be32(flags);
1008 ioadl64->data_len = cpu_to_be32(len);
1009 ioadl64->address = cpu_to_be64(dma_addr);
1010
1011 ipr_cmd->ioarcb.ioadl_len =
1012 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1013 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1014 } else {
1015 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1016 ioadl->address = cpu_to_be32(dma_addr);
1017
1018 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1019 ipr_cmd->ioarcb.read_ioadl_len =
1020 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1021 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1022 } else {
1023 ipr_cmd->ioarcb.ioadl_len =
1024 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1025 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1026 }
1027 }
1028 }
1029
1030 /**
1031 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1032 * @ipr_cmd: ipr command struct
1033 * @timeout_func: function to invoke if command times out
1034 * @timeout: timeout
1035 *
1036 * Return value:
1037 * none
1038 **/
1039 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1040 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
1041 u32 timeout)
1042 {
1043 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1044
1045 init_completion(&ipr_cmd->completion);
1046 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1047
1048 spin_unlock_irq(ioa_cfg->host->host_lock);
1049 wait_for_completion(&ipr_cmd->completion);
1050 spin_lock_irq(ioa_cfg->host->host_lock);
1051 }
1052
1053 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1054 {
1055 unsigned int hrrq;
1056
1057 if (ioa_cfg->hrrq_num == 1)
1058 hrrq = 0;
1059 else {
1060 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1061 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1062 }
1063 return hrrq;
1064 }
1065
1066 /**
1067 * ipr_send_hcam - Send an HCAM to the adapter.
1068 * @ioa_cfg: ioa config struct
1069 * @type: HCAM type
1070 * @hostrcb: hostrcb struct
1071 *
1072 * This function will send a Host Controlled Async command to the adapter.
1073 * If HCAMs are currently not allowed to be issued to the adapter, it will
1074 * place the hostrcb on the free queue.
1075 *
1076 * Return value:
1077 * none
1078 **/
1079 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1080 struct ipr_hostrcb *hostrcb)
1081 {
1082 struct ipr_cmnd *ipr_cmd;
1083 struct ipr_ioarcb *ioarcb;
1084
1085 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1086 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1087 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1088 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1089
1090 ipr_cmd->u.hostrcb = hostrcb;
1091 ioarcb = &ipr_cmd->ioarcb;
1092
1093 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1094 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1095 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1096 ioarcb->cmd_pkt.cdb[1] = type;
1097 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1098 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1099
1100 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1101 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1102
1103 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1104 ipr_cmd->done = ipr_process_ccn;
1105 else
1106 ipr_cmd->done = ipr_process_error;
1107
1108 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1109
1110 ipr_send_command(ipr_cmd);
1111 } else {
1112 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1113 }
1114 }
1115
1116 /**
1117 * ipr_update_ata_class - Update the ata class in the resource entry
1118 * @res: resource entry struct
1119 * @proto: cfgte device bus protocol value
1120 *
1121 * Return value:
1122 * none
1123 **/
1124 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1125 {
1126 switch (proto) {
1127 case IPR_PROTO_SATA:
1128 case IPR_PROTO_SAS_STP:
1129 res->ata_class = ATA_DEV_ATA;
1130 break;
1131 case IPR_PROTO_SATA_ATAPI:
1132 case IPR_PROTO_SAS_STP_ATAPI:
1133 res->ata_class = ATA_DEV_ATAPI;
1134 break;
1135 default:
1136 res->ata_class = ATA_DEV_UNKNOWN;
1137 break;
1138 };
1139 }
1140
1141 /**
1142 * ipr_init_res_entry - Initialize a resource entry struct.
1143 * @res: resource entry struct
1144 * @cfgtew: config table entry wrapper struct
1145 *
1146 * Return value:
1147 * none
1148 **/
1149 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1150 struct ipr_config_table_entry_wrapper *cfgtew)
1151 {
1152 int found = 0;
1153 unsigned int proto;
1154 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1155 struct ipr_resource_entry *gscsi_res = NULL;
1156
1157 res->needs_sync_complete = 0;
1158 res->in_erp = 0;
1159 res->add_to_ml = 0;
1160 res->del_from_ml = 0;
1161 res->resetting_device = 0;
1162 res->reset_occurred = 0;
1163 res->sdev = NULL;
1164 res->sata_port = NULL;
1165
1166 if (ioa_cfg->sis64) {
1167 proto = cfgtew->u.cfgte64->proto;
1168 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1169 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1170 res->qmodel = IPR_QUEUEING_MODEL64(res);
1171 res->type = cfgtew->u.cfgte64->res_type;
1172
1173 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1174 sizeof(res->res_path));
1175
1176 res->bus = 0;
1177 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1178 sizeof(res->dev_lun.scsi_lun));
1179 res->lun = scsilun_to_int(&res->dev_lun);
1180
1181 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1182 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1183 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1184 found = 1;
1185 res->target = gscsi_res->target;
1186 break;
1187 }
1188 }
1189 if (!found) {
1190 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1191 ioa_cfg->max_devs_supported);
1192 set_bit(res->target, ioa_cfg->target_ids);
1193 }
1194 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1195 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1196 res->target = 0;
1197 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1198 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1199 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1200 ioa_cfg->max_devs_supported);
1201 set_bit(res->target, ioa_cfg->array_ids);
1202 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1203 res->bus = IPR_VSET_VIRTUAL_BUS;
1204 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1205 ioa_cfg->max_devs_supported);
1206 set_bit(res->target, ioa_cfg->vset_ids);
1207 } else {
1208 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1209 ioa_cfg->max_devs_supported);
1210 set_bit(res->target, ioa_cfg->target_ids);
1211 }
1212 } else {
1213 proto = cfgtew->u.cfgte->proto;
1214 res->qmodel = IPR_QUEUEING_MODEL(res);
1215 res->flags = cfgtew->u.cfgte->flags;
1216 if (res->flags & IPR_IS_IOA_RESOURCE)
1217 res->type = IPR_RES_TYPE_IOAFP;
1218 else
1219 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1220
1221 res->bus = cfgtew->u.cfgte->res_addr.bus;
1222 res->target = cfgtew->u.cfgte->res_addr.target;
1223 res->lun = cfgtew->u.cfgte->res_addr.lun;
1224 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1225 }
1226
1227 ipr_update_ata_class(res, proto);
1228 }
1229
1230 /**
1231 * ipr_is_same_device - Determine if two devices are the same.
1232 * @res: resource entry struct
1233 * @cfgtew: config table entry wrapper struct
1234 *
1235 * Return value:
1236 * 1 if the devices are the same / 0 otherwise
1237 **/
1238 static int ipr_is_same_device(struct ipr_resource_entry *res,
1239 struct ipr_config_table_entry_wrapper *cfgtew)
1240 {
1241 if (res->ioa_cfg->sis64) {
1242 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1243 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1244 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1245 sizeof(cfgtew->u.cfgte64->lun))) {
1246 return 1;
1247 }
1248 } else {
1249 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1250 res->target == cfgtew->u.cfgte->res_addr.target &&
1251 res->lun == cfgtew->u.cfgte->res_addr.lun)
1252 return 1;
1253 }
1254
1255 return 0;
1256 }
1257
1258 /**
1259 * __ipr_format_res_path - Format the resource path for printing.
1260 * @res_path: resource path
1261 * @buf: buffer
1262 * @len: length of buffer provided
1263 *
1264 * Return value:
1265 * pointer to buffer
1266 **/
1267 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1268 {
1269 int i;
1270 char *p = buffer;
1271
1272 *p = '\0';
1273 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1274 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1275 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1276
1277 return buffer;
1278 }
1279
1280 /**
1281 * ipr_format_res_path - Format the resource path for printing.
1282 * @ioa_cfg: ioa config struct
1283 * @res_path: resource path
1284 * @buf: buffer
1285 * @len: length of buffer provided
1286 *
1287 * Return value:
1288 * pointer to buffer
1289 **/
1290 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1291 u8 *res_path, char *buffer, int len)
1292 {
1293 char *p = buffer;
1294
1295 *p = '\0';
1296 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1297 __ipr_format_res_path(res_path, p, len - (buffer - p));
1298 return buffer;
1299 }
1300
1301 /**
1302 * ipr_update_res_entry - Update the resource entry.
1303 * @res: resource entry struct
1304 * @cfgtew: config table entry wrapper struct
1305 *
1306 * Return value:
1307 * none
1308 **/
1309 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1310 struct ipr_config_table_entry_wrapper *cfgtew)
1311 {
1312 char buffer[IPR_MAX_RES_PATH_LENGTH];
1313 unsigned int proto;
1314 int new_path = 0;
1315
1316 if (res->ioa_cfg->sis64) {
1317 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1318 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1319 res->type = cfgtew->u.cfgte64->res_type;
1320
1321 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1322 sizeof(struct ipr_std_inq_data));
1323
1324 res->qmodel = IPR_QUEUEING_MODEL64(res);
1325 proto = cfgtew->u.cfgte64->proto;
1326 res->res_handle = cfgtew->u.cfgte64->res_handle;
1327 res->dev_id = cfgtew->u.cfgte64->dev_id;
1328
1329 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1330 sizeof(res->dev_lun.scsi_lun));
1331
1332 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1333 sizeof(res->res_path))) {
1334 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1335 sizeof(res->res_path));
1336 new_path = 1;
1337 }
1338
1339 if (res->sdev && new_path)
1340 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1341 ipr_format_res_path(res->ioa_cfg,
1342 res->res_path, buffer, sizeof(buffer)));
1343 } else {
1344 res->flags = cfgtew->u.cfgte->flags;
1345 if (res->flags & IPR_IS_IOA_RESOURCE)
1346 res->type = IPR_RES_TYPE_IOAFP;
1347 else
1348 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1349
1350 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1351 sizeof(struct ipr_std_inq_data));
1352
1353 res->qmodel = IPR_QUEUEING_MODEL(res);
1354 proto = cfgtew->u.cfgte->proto;
1355 res->res_handle = cfgtew->u.cfgte->res_handle;
1356 }
1357
1358 ipr_update_ata_class(res, proto);
1359 }
1360
1361 /**
1362 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1363 * for the resource.
1364 * @res: resource entry struct
1365 * @cfgtew: config table entry wrapper struct
1366 *
1367 * Return value:
1368 * none
1369 **/
1370 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1371 {
1372 struct ipr_resource_entry *gscsi_res = NULL;
1373 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1374
1375 if (!ioa_cfg->sis64)
1376 return;
1377
1378 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1379 clear_bit(res->target, ioa_cfg->array_ids);
1380 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1381 clear_bit(res->target, ioa_cfg->vset_ids);
1382 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1383 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1384 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1385 return;
1386 clear_bit(res->target, ioa_cfg->target_ids);
1387
1388 } else if (res->bus == 0)
1389 clear_bit(res->target, ioa_cfg->target_ids);
1390 }
1391
1392 /**
1393 * ipr_handle_config_change - Handle a config change from the adapter
1394 * @ioa_cfg: ioa config struct
1395 * @hostrcb: hostrcb
1396 *
1397 * Return value:
1398 * none
1399 **/
1400 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1401 struct ipr_hostrcb *hostrcb)
1402 {
1403 struct ipr_resource_entry *res = NULL;
1404 struct ipr_config_table_entry_wrapper cfgtew;
1405 __be32 cc_res_handle;
1406
1407 u32 is_ndn = 1;
1408
1409 if (ioa_cfg->sis64) {
1410 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1411 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1412 } else {
1413 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1414 cc_res_handle = cfgtew.u.cfgte->res_handle;
1415 }
1416
1417 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1418 if (res->res_handle == cc_res_handle) {
1419 is_ndn = 0;
1420 break;
1421 }
1422 }
1423
1424 if (is_ndn) {
1425 if (list_empty(&ioa_cfg->free_res_q)) {
1426 ipr_send_hcam(ioa_cfg,
1427 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1428 hostrcb);
1429 return;
1430 }
1431
1432 res = list_entry(ioa_cfg->free_res_q.next,
1433 struct ipr_resource_entry, queue);
1434
1435 list_del(&res->queue);
1436 ipr_init_res_entry(res, &cfgtew);
1437 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1438 }
1439
1440 ipr_update_res_entry(res, &cfgtew);
1441
1442 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1443 if (res->sdev) {
1444 res->del_from_ml = 1;
1445 res->res_handle = IPR_INVALID_RES_HANDLE;
1446 schedule_work(&ioa_cfg->work_q);
1447 } else {
1448 ipr_clear_res_target(res);
1449 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1450 }
1451 } else if (!res->sdev || res->del_from_ml) {
1452 res->add_to_ml = 1;
1453 schedule_work(&ioa_cfg->work_q);
1454 }
1455
1456 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1457 }
1458
1459 /**
1460 * ipr_process_ccn - Op done function for a CCN.
1461 * @ipr_cmd: ipr command struct
1462 *
1463 * This function is the op done function for a configuration
1464 * change notification host controlled async from the adapter.
1465 *
1466 * Return value:
1467 * none
1468 **/
1469 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1470 {
1471 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1472 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1473 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1474
1475 list_del(&hostrcb->queue);
1476 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1477
1478 if (ioasc) {
1479 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1480 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1481 dev_err(&ioa_cfg->pdev->dev,
1482 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1483
1484 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1485 } else {
1486 ipr_handle_config_change(ioa_cfg, hostrcb);
1487 }
1488 }
1489
1490 /**
1491 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1492 * @i: index into buffer
1493 * @buf: string to modify
1494 *
1495 * This function will strip all trailing whitespace, pad the end
1496 * of the string with a single space, and NULL terminate the string.
1497 *
1498 * Return value:
1499 * new length of string
1500 **/
1501 static int strip_and_pad_whitespace(int i, char *buf)
1502 {
1503 while (i && buf[i] == ' ')
1504 i--;
1505 buf[i+1] = ' ';
1506 buf[i+2] = '\0';
1507 return i + 2;
1508 }
1509
1510 /**
1511 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1512 * @prefix: string to print at start of printk
1513 * @hostrcb: hostrcb pointer
1514 * @vpd: vendor/product id/sn struct
1515 *
1516 * Return value:
1517 * none
1518 **/
1519 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1520 struct ipr_vpd *vpd)
1521 {
1522 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1523 int i = 0;
1524
1525 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1526 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1527
1528 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1529 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1530
1531 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1532 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1533
1534 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1535 }
1536
1537 /**
1538 * ipr_log_vpd - Log the passed VPD to the error log.
1539 * @vpd: vendor/product id/sn struct
1540 *
1541 * Return value:
1542 * none
1543 **/
1544 static void ipr_log_vpd(struct ipr_vpd *vpd)
1545 {
1546 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1547 + IPR_SERIAL_NUM_LEN];
1548
1549 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1550 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1551 IPR_PROD_ID_LEN);
1552 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1553 ipr_err("Vendor/Product ID: %s\n", buffer);
1554
1555 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1556 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1557 ipr_err(" Serial Number: %s\n", buffer);
1558 }
1559
1560 /**
1561 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1562 * @prefix: string to print at start of printk
1563 * @hostrcb: hostrcb pointer
1564 * @vpd: vendor/product id/sn/wwn struct
1565 *
1566 * Return value:
1567 * none
1568 **/
1569 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1570 struct ipr_ext_vpd *vpd)
1571 {
1572 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1573 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1574 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1575 }
1576
1577 /**
1578 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1579 * @vpd: vendor/product id/sn/wwn struct
1580 *
1581 * Return value:
1582 * none
1583 **/
1584 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1585 {
1586 ipr_log_vpd(&vpd->vpd);
1587 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1588 be32_to_cpu(vpd->wwid[1]));
1589 }
1590
1591 /**
1592 * ipr_log_enhanced_cache_error - Log a cache error.
1593 * @ioa_cfg: ioa config struct
1594 * @hostrcb: hostrcb struct
1595 *
1596 * Return value:
1597 * none
1598 **/
1599 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1600 struct ipr_hostrcb *hostrcb)
1601 {
1602 struct ipr_hostrcb_type_12_error *error;
1603
1604 if (ioa_cfg->sis64)
1605 error = &hostrcb->hcam.u.error64.u.type_12_error;
1606 else
1607 error = &hostrcb->hcam.u.error.u.type_12_error;
1608
1609 ipr_err("-----Current Configuration-----\n");
1610 ipr_err("Cache Directory Card Information:\n");
1611 ipr_log_ext_vpd(&error->ioa_vpd);
1612 ipr_err("Adapter Card Information:\n");
1613 ipr_log_ext_vpd(&error->cfc_vpd);
1614
1615 ipr_err("-----Expected Configuration-----\n");
1616 ipr_err("Cache Directory Card Information:\n");
1617 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1618 ipr_err("Adapter Card Information:\n");
1619 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1620
1621 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1622 be32_to_cpu(error->ioa_data[0]),
1623 be32_to_cpu(error->ioa_data[1]),
1624 be32_to_cpu(error->ioa_data[2]));
1625 }
1626
1627 /**
1628 * ipr_log_cache_error - Log a cache error.
1629 * @ioa_cfg: ioa config struct
1630 * @hostrcb: hostrcb struct
1631 *
1632 * Return value:
1633 * none
1634 **/
1635 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1636 struct ipr_hostrcb *hostrcb)
1637 {
1638 struct ipr_hostrcb_type_02_error *error =
1639 &hostrcb->hcam.u.error.u.type_02_error;
1640
1641 ipr_err("-----Current Configuration-----\n");
1642 ipr_err("Cache Directory Card Information:\n");
1643 ipr_log_vpd(&error->ioa_vpd);
1644 ipr_err("Adapter Card Information:\n");
1645 ipr_log_vpd(&error->cfc_vpd);
1646
1647 ipr_err("-----Expected Configuration-----\n");
1648 ipr_err("Cache Directory Card Information:\n");
1649 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1650 ipr_err("Adapter Card Information:\n");
1651 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1652
1653 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1654 be32_to_cpu(error->ioa_data[0]),
1655 be32_to_cpu(error->ioa_data[1]),
1656 be32_to_cpu(error->ioa_data[2]));
1657 }
1658
1659 /**
1660 * ipr_log_enhanced_config_error - Log a configuration error.
1661 * @ioa_cfg: ioa config struct
1662 * @hostrcb: hostrcb struct
1663 *
1664 * Return value:
1665 * none
1666 **/
1667 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1668 struct ipr_hostrcb *hostrcb)
1669 {
1670 int errors_logged, i;
1671 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1672 struct ipr_hostrcb_type_13_error *error;
1673
1674 error = &hostrcb->hcam.u.error.u.type_13_error;
1675 errors_logged = be32_to_cpu(error->errors_logged);
1676
1677 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1678 be32_to_cpu(error->errors_detected), errors_logged);
1679
1680 dev_entry = error->dev;
1681
1682 for (i = 0; i < errors_logged; i++, dev_entry++) {
1683 ipr_err_separator;
1684
1685 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1686 ipr_log_ext_vpd(&dev_entry->vpd);
1687
1688 ipr_err("-----New Device Information-----\n");
1689 ipr_log_ext_vpd(&dev_entry->new_vpd);
1690
1691 ipr_err("Cache Directory Card Information:\n");
1692 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1693
1694 ipr_err("Adapter Card Information:\n");
1695 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1696 }
1697 }
1698
1699 /**
1700 * ipr_log_sis64_config_error - Log a device error.
1701 * @ioa_cfg: ioa config struct
1702 * @hostrcb: hostrcb struct
1703 *
1704 * Return value:
1705 * none
1706 **/
1707 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1708 struct ipr_hostrcb *hostrcb)
1709 {
1710 int errors_logged, i;
1711 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1712 struct ipr_hostrcb_type_23_error *error;
1713 char buffer[IPR_MAX_RES_PATH_LENGTH];
1714
1715 error = &hostrcb->hcam.u.error64.u.type_23_error;
1716 errors_logged = be32_to_cpu(error->errors_logged);
1717
1718 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1719 be32_to_cpu(error->errors_detected), errors_logged);
1720
1721 dev_entry = error->dev;
1722
1723 for (i = 0; i < errors_logged; i++, dev_entry++) {
1724 ipr_err_separator;
1725
1726 ipr_err("Device %d : %s", i + 1,
1727 __ipr_format_res_path(dev_entry->res_path,
1728 buffer, sizeof(buffer)));
1729 ipr_log_ext_vpd(&dev_entry->vpd);
1730
1731 ipr_err("-----New Device Information-----\n");
1732 ipr_log_ext_vpd(&dev_entry->new_vpd);
1733
1734 ipr_err("Cache Directory Card Information:\n");
1735 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1736
1737 ipr_err("Adapter Card Information:\n");
1738 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1739 }
1740 }
1741
1742 /**
1743 * ipr_log_config_error - Log a configuration error.
1744 * @ioa_cfg: ioa config struct
1745 * @hostrcb: hostrcb struct
1746 *
1747 * Return value:
1748 * none
1749 **/
1750 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1751 struct ipr_hostrcb *hostrcb)
1752 {
1753 int errors_logged, i;
1754 struct ipr_hostrcb_device_data_entry *dev_entry;
1755 struct ipr_hostrcb_type_03_error *error;
1756
1757 error = &hostrcb->hcam.u.error.u.type_03_error;
1758 errors_logged = be32_to_cpu(error->errors_logged);
1759
1760 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1761 be32_to_cpu(error->errors_detected), errors_logged);
1762
1763 dev_entry = error->dev;
1764
1765 for (i = 0; i < errors_logged; i++, dev_entry++) {
1766 ipr_err_separator;
1767
1768 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1769 ipr_log_vpd(&dev_entry->vpd);
1770
1771 ipr_err("-----New Device Information-----\n");
1772 ipr_log_vpd(&dev_entry->new_vpd);
1773
1774 ipr_err("Cache Directory Card Information:\n");
1775 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1776
1777 ipr_err("Adapter Card Information:\n");
1778 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1779
1780 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1781 be32_to_cpu(dev_entry->ioa_data[0]),
1782 be32_to_cpu(dev_entry->ioa_data[1]),
1783 be32_to_cpu(dev_entry->ioa_data[2]),
1784 be32_to_cpu(dev_entry->ioa_data[3]),
1785 be32_to_cpu(dev_entry->ioa_data[4]));
1786 }
1787 }
1788
1789 /**
1790 * ipr_log_enhanced_array_error - Log an array configuration error.
1791 * @ioa_cfg: ioa config struct
1792 * @hostrcb: hostrcb struct
1793 *
1794 * Return value:
1795 * none
1796 **/
1797 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1798 struct ipr_hostrcb *hostrcb)
1799 {
1800 int i, num_entries;
1801 struct ipr_hostrcb_type_14_error *error;
1802 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1803 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1804
1805 error = &hostrcb->hcam.u.error.u.type_14_error;
1806
1807 ipr_err_separator;
1808
1809 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1810 error->protection_level,
1811 ioa_cfg->host->host_no,
1812 error->last_func_vset_res_addr.bus,
1813 error->last_func_vset_res_addr.target,
1814 error->last_func_vset_res_addr.lun);
1815
1816 ipr_err_separator;
1817
1818 array_entry = error->array_member;
1819 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1820 ARRAY_SIZE(error->array_member));
1821
1822 for (i = 0; i < num_entries; i++, array_entry++) {
1823 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1824 continue;
1825
1826 if (be32_to_cpu(error->exposed_mode_adn) == i)
1827 ipr_err("Exposed Array Member %d:\n", i);
1828 else
1829 ipr_err("Array Member %d:\n", i);
1830
1831 ipr_log_ext_vpd(&array_entry->vpd);
1832 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1833 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1834 "Expected Location");
1835
1836 ipr_err_separator;
1837 }
1838 }
1839
1840 /**
1841 * ipr_log_array_error - Log an array configuration error.
1842 * @ioa_cfg: ioa config struct
1843 * @hostrcb: hostrcb struct
1844 *
1845 * Return value:
1846 * none
1847 **/
1848 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1849 struct ipr_hostrcb *hostrcb)
1850 {
1851 int i;
1852 struct ipr_hostrcb_type_04_error *error;
1853 struct ipr_hostrcb_array_data_entry *array_entry;
1854 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1855
1856 error = &hostrcb->hcam.u.error.u.type_04_error;
1857
1858 ipr_err_separator;
1859
1860 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1861 error->protection_level,
1862 ioa_cfg->host->host_no,
1863 error->last_func_vset_res_addr.bus,
1864 error->last_func_vset_res_addr.target,
1865 error->last_func_vset_res_addr.lun);
1866
1867 ipr_err_separator;
1868
1869 array_entry = error->array_member;
1870
1871 for (i = 0; i < 18; i++) {
1872 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1873 continue;
1874
1875 if (be32_to_cpu(error->exposed_mode_adn) == i)
1876 ipr_err("Exposed Array Member %d:\n", i);
1877 else
1878 ipr_err("Array Member %d:\n", i);
1879
1880 ipr_log_vpd(&array_entry->vpd);
1881
1882 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1883 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1884 "Expected Location");
1885
1886 ipr_err_separator;
1887
1888 if (i == 9)
1889 array_entry = error->array_member2;
1890 else
1891 array_entry++;
1892 }
1893 }
1894
1895 /**
1896 * ipr_log_hex_data - Log additional hex IOA error data.
1897 * @ioa_cfg: ioa config struct
1898 * @data: IOA error data
1899 * @len: data length
1900 *
1901 * Return value:
1902 * none
1903 **/
1904 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1905 {
1906 int i;
1907
1908 if (len == 0)
1909 return;
1910
1911 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1912 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1913
1914 for (i = 0; i < len / 4; i += 4) {
1915 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1916 be32_to_cpu(data[i]),
1917 be32_to_cpu(data[i+1]),
1918 be32_to_cpu(data[i+2]),
1919 be32_to_cpu(data[i+3]));
1920 }
1921 }
1922
1923 /**
1924 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1925 * @ioa_cfg: ioa config struct
1926 * @hostrcb: hostrcb struct
1927 *
1928 * Return value:
1929 * none
1930 **/
1931 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1932 struct ipr_hostrcb *hostrcb)
1933 {
1934 struct ipr_hostrcb_type_17_error *error;
1935
1936 if (ioa_cfg->sis64)
1937 error = &hostrcb->hcam.u.error64.u.type_17_error;
1938 else
1939 error = &hostrcb->hcam.u.error.u.type_17_error;
1940
1941 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1942 strim(error->failure_reason);
1943
1944 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1945 be32_to_cpu(hostrcb->hcam.u.error.prc));
1946 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1947 ipr_log_hex_data(ioa_cfg, error->data,
1948 be32_to_cpu(hostrcb->hcam.length) -
1949 (offsetof(struct ipr_hostrcb_error, u) +
1950 offsetof(struct ipr_hostrcb_type_17_error, data)));
1951 }
1952
1953 /**
1954 * ipr_log_dual_ioa_error - Log a dual adapter error.
1955 * @ioa_cfg: ioa config struct
1956 * @hostrcb: hostrcb struct
1957 *
1958 * Return value:
1959 * none
1960 **/
1961 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1962 struct ipr_hostrcb *hostrcb)
1963 {
1964 struct ipr_hostrcb_type_07_error *error;
1965
1966 error = &hostrcb->hcam.u.error.u.type_07_error;
1967 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1968 strim(error->failure_reason);
1969
1970 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1971 be32_to_cpu(hostrcb->hcam.u.error.prc));
1972 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1973 ipr_log_hex_data(ioa_cfg, error->data,
1974 be32_to_cpu(hostrcb->hcam.length) -
1975 (offsetof(struct ipr_hostrcb_error, u) +
1976 offsetof(struct ipr_hostrcb_type_07_error, data)));
1977 }
1978
1979 static const struct {
1980 u8 active;
1981 char *desc;
1982 } path_active_desc[] = {
1983 { IPR_PATH_NO_INFO, "Path" },
1984 { IPR_PATH_ACTIVE, "Active path" },
1985 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1986 };
1987
1988 static const struct {
1989 u8 state;
1990 char *desc;
1991 } path_state_desc[] = {
1992 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1993 { IPR_PATH_HEALTHY, "is healthy" },
1994 { IPR_PATH_DEGRADED, "is degraded" },
1995 { IPR_PATH_FAILED, "is failed" }
1996 };
1997
1998 /**
1999 * ipr_log_fabric_path - Log a fabric path error
2000 * @hostrcb: hostrcb struct
2001 * @fabric: fabric descriptor
2002 *
2003 * Return value:
2004 * none
2005 **/
2006 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2007 struct ipr_hostrcb_fabric_desc *fabric)
2008 {
2009 int i, j;
2010 u8 path_state = fabric->path_state;
2011 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2012 u8 state = path_state & IPR_PATH_STATE_MASK;
2013
2014 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2015 if (path_active_desc[i].active != active)
2016 continue;
2017
2018 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2019 if (path_state_desc[j].state != state)
2020 continue;
2021
2022 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2023 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2024 path_active_desc[i].desc, path_state_desc[j].desc,
2025 fabric->ioa_port);
2026 } else if (fabric->cascaded_expander == 0xff) {
2027 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2028 path_active_desc[i].desc, path_state_desc[j].desc,
2029 fabric->ioa_port, fabric->phy);
2030 } else if (fabric->phy == 0xff) {
2031 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2032 path_active_desc[i].desc, path_state_desc[j].desc,
2033 fabric->ioa_port, fabric->cascaded_expander);
2034 } else {
2035 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2036 path_active_desc[i].desc, path_state_desc[j].desc,
2037 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2038 }
2039 return;
2040 }
2041 }
2042
2043 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2044 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2045 }
2046
2047 /**
2048 * ipr_log64_fabric_path - Log a fabric path error
2049 * @hostrcb: hostrcb struct
2050 * @fabric: fabric descriptor
2051 *
2052 * Return value:
2053 * none
2054 **/
2055 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2056 struct ipr_hostrcb64_fabric_desc *fabric)
2057 {
2058 int i, j;
2059 u8 path_state = fabric->path_state;
2060 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2061 u8 state = path_state & IPR_PATH_STATE_MASK;
2062 char buffer[IPR_MAX_RES_PATH_LENGTH];
2063
2064 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2065 if (path_active_desc[i].active != active)
2066 continue;
2067
2068 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2069 if (path_state_desc[j].state != state)
2070 continue;
2071
2072 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2073 path_active_desc[i].desc, path_state_desc[j].desc,
2074 ipr_format_res_path(hostrcb->ioa_cfg,
2075 fabric->res_path,
2076 buffer, sizeof(buffer)));
2077 return;
2078 }
2079 }
2080
2081 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2082 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2083 buffer, sizeof(buffer)));
2084 }
2085
2086 static const struct {
2087 u8 type;
2088 char *desc;
2089 } path_type_desc[] = {
2090 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2091 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2092 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2093 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2094 };
2095
2096 static const struct {
2097 u8 status;
2098 char *desc;
2099 } path_status_desc[] = {
2100 { IPR_PATH_CFG_NO_PROB, "Functional" },
2101 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2102 { IPR_PATH_CFG_FAILED, "Failed" },
2103 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2104 { IPR_PATH_NOT_DETECTED, "Missing" },
2105 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2106 };
2107
2108 static const char *link_rate[] = {
2109 "unknown",
2110 "disabled",
2111 "phy reset problem",
2112 "spinup hold",
2113 "port selector",
2114 "unknown",
2115 "unknown",
2116 "unknown",
2117 "1.5Gbps",
2118 "3.0Gbps",
2119 "unknown",
2120 "unknown",
2121 "unknown",
2122 "unknown",
2123 "unknown",
2124 "unknown"
2125 };
2126
2127 /**
2128 * ipr_log_path_elem - Log a fabric path element.
2129 * @hostrcb: hostrcb struct
2130 * @cfg: fabric path element struct
2131 *
2132 * Return value:
2133 * none
2134 **/
2135 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2136 struct ipr_hostrcb_config_element *cfg)
2137 {
2138 int i, j;
2139 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2140 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2141
2142 if (type == IPR_PATH_CFG_NOT_EXIST)
2143 return;
2144
2145 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2146 if (path_type_desc[i].type != type)
2147 continue;
2148
2149 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2150 if (path_status_desc[j].status != status)
2151 continue;
2152
2153 if (type == IPR_PATH_CFG_IOA_PORT) {
2154 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2155 path_status_desc[j].desc, path_type_desc[i].desc,
2156 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2157 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2158 } else {
2159 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2160 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2161 path_status_desc[j].desc, path_type_desc[i].desc,
2162 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2163 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2164 } else if (cfg->cascaded_expander == 0xff) {
2165 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2166 "WWN=%08X%08X\n", path_status_desc[j].desc,
2167 path_type_desc[i].desc, cfg->phy,
2168 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2169 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2170 } else if (cfg->phy == 0xff) {
2171 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2172 "WWN=%08X%08X\n", path_status_desc[j].desc,
2173 path_type_desc[i].desc, cfg->cascaded_expander,
2174 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2175 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2176 } else {
2177 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2178 "WWN=%08X%08X\n", path_status_desc[j].desc,
2179 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2180 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2181 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2182 }
2183 }
2184 return;
2185 }
2186 }
2187
2188 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2189 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2190 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2191 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2192 }
2193
2194 /**
2195 * ipr_log64_path_elem - Log a fabric path element.
2196 * @hostrcb: hostrcb struct
2197 * @cfg: fabric path element struct
2198 *
2199 * Return value:
2200 * none
2201 **/
2202 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2203 struct ipr_hostrcb64_config_element *cfg)
2204 {
2205 int i, j;
2206 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2207 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2208 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2209 char buffer[IPR_MAX_RES_PATH_LENGTH];
2210
2211 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2212 return;
2213
2214 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2215 if (path_type_desc[i].type != type)
2216 continue;
2217
2218 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2219 if (path_status_desc[j].status != status)
2220 continue;
2221
2222 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2223 path_status_desc[j].desc, path_type_desc[i].desc,
2224 ipr_format_res_path(hostrcb->ioa_cfg,
2225 cfg->res_path, buffer, sizeof(buffer)),
2226 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2227 be32_to_cpu(cfg->wwid[0]),
2228 be32_to_cpu(cfg->wwid[1]));
2229 return;
2230 }
2231 }
2232 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2233 "WWN=%08X%08X\n", cfg->type_status,
2234 ipr_format_res_path(hostrcb->ioa_cfg,
2235 cfg->res_path, buffer, sizeof(buffer)),
2236 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2237 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2238 }
2239
2240 /**
2241 * ipr_log_fabric_error - Log a fabric error.
2242 * @ioa_cfg: ioa config struct
2243 * @hostrcb: hostrcb struct
2244 *
2245 * Return value:
2246 * none
2247 **/
2248 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2249 struct ipr_hostrcb *hostrcb)
2250 {
2251 struct ipr_hostrcb_type_20_error *error;
2252 struct ipr_hostrcb_fabric_desc *fabric;
2253 struct ipr_hostrcb_config_element *cfg;
2254 int i, add_len;
2255
2256 error = &hostrcb->hcam.u.error.u.type_20_error;
2257 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2258 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2259
2260 add_len = be32_to_cpu(hostrcb->hcam.length) -
2261 (offsetof(struct ipr_hostrcb_error, u) +
2262 offsetof(struct ipr_hostrcb_type_20_error, desc));
2263
2264 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2265 ipr_log_fabric_path(hostrcb, fabric);
2266 for_each_fabric_cfg(fabric, cfg)
2267 ipr_log_path_elem(hostrcb, cfg);
2268
2269 add_len -= be16_to_cpu(fabric->length);
2270 fabric = (struct ipr_hostrcb_fabric_desc *)
2271 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2272 }
2273
2274 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2275 }
2276
2277 /**
2278 * ipr_log_sis64_array_error - Log a sis64 array error.
2279 * @ioa_cfg: ioa config struct
2280 * @hostrcb: hostrcb struct
2281 *
2282 * Return value:
2283 * none
2284 **/
2285 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2286 struct ipr_hostrcb *hostrcb)
2287 {
2288 int i, num_entries;
2289 struct ipr_hostrcb_type_24_error *error;
2290 struct ipr_hostrcb64_array_data_entry *array_entry;
2291 char buffer[IPR_MAX_RES_PATH_LENGTH];
2292 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2293
2294 error = &hostrcb->hcam.u.error64.u.type_24_error;
2295
2296 ipr_err_separator;
2297
2298 ipr_err("RAID %s Array Configuration: %s\n",
2299 error->protection_level,
2300 ipr_format_res_path(ioa_cfg, error->last_res_path,
2301 buffer, sizeof(buffer)));
2302
2303 ipr_err_separator;
2304
2305 array_entry = error->array_member;
2306 num_entries = min_t(u32, error->num_entries,
2307 ARRAY_SIZE(error->array_member));
2308
2309 for (i = 0; i < num_entries; i++, array_entry++) {
2310
2311 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2312 continue;
2313
2314 if (error->exposed_mode_adn == i)
2315 ipr_err("Exposed Array Member %d:\n", i);
2316 else
2317 ipr_err("Array Member %d:\n", i);
2318
2319 ipr_err("Array Member %d:\n", i);
2320 ipr_log_ext_vpd(&array_entry->vpd);
2321 ipr_err("Current Location: %s\n",
2322 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2323 buffer, sizeof(buffer)));
2324 ipr_err("Expected Location: %s\n",
2325 ipr_format_res_path(ioa_cfg,
2326 array_entry->expected_res_path,
2327 buffer, sizeof(buffer)));
2328
2329 ipr_err_separator;
2330 }
2331 }
2332
2333 /**
2334 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2335 * @ioa_cfg: ioa config struct
2336 * @hostrcb: hostrcb struct
2337 *
2338 * Return value:
2339 * none
2340 **/
2341 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2342 struct ipr_hostrcb *hostrcb)
2343 {
2344 struct ipr_hostrcb_type_30_error *error;
2345 struct ipr_hostrcb64_fabric_desc *fabric;
2346 struct ipr_hostrcb64_config_element *cfg;
2347 int i, add_len;
2348
2349 error = &hostrcb->hcam.u.error64.u.type_30_error;
2350
2351 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2352 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2353
2354 add_len = be32_to_cpu(hostrcb->hcam.length) -
2355 (offsetof(struct ipr_hostrcb64_error, u) +
2356 offsetof(struct ipr_hostrcb_type_30_error, desc));
2357
2358 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2359 ipr_log64_fabric_path(hostrcb, fabric);
2360 for_each_fabric_cfg(fabric, cfg)
2361 ipr_log64_path_elem(hostrcb, cfg);
2362
2363 add_len -= be16_to_cpu(fabric->length);
2364 fabric = (struct ipr_hostrcb64_fabric_desc *)
2365 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2366 }
2367
2368 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2369 }
2370
2371 /**
2372 * ipr_log_generic_error - Log an adapter error.
2373 * @ioa_cfg: ioa config struct
2374 * @hostrcb: hostrcb struct
2375 *
2376 * Return value:
2377 * none
2378 **/
2379 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2380 struct ipr_hostrcb *hostrcb)
2381 {
2382 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2383 be32_to_cpu(hostrcb->hcam.length));
2384 }
2385
2386 /**
2387 * ipr_log_sis64_device_error - Log a cache error.
2388 * @ioa_cfg: ioa config struct
2389 * @hostrcb: hostrcb struct
2390 *
2391 * Return value:
2392 * none
2393 **/
2394 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2395 struct ipr_hostrcb *hostrcb)
2396 {
2397 struct ipr_hostrcb_type_21_error *error;
2398 char buffer[IPR_MAX_RES_PATH_LENGTH];
2399
2400 error = &hostrcb->hcam.u.error64.u.type_21_error;
2401
2402 ipr_err("-----Failing Device Information-----\n");
2403 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2404 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2405 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2406 ipr_err("Device Resource Path: %s\n",
2407 __ipr_format_res_path(error->res_path,
2408 buffer, sizeof(buffer)));
2409 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2410 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2411 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2412 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc);
2413 ipr_err("SCSI Sense Data:\n");
2414 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2415 ipr_err("SCSI Command Descriptor Block: \n");
2416 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2417
2418 ipr_err("Additional IOA Data:\n");
2419 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2420 }
2421
2422 /**
2423 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2424 * @ioasc: IOASC
2425 *
2426 * This function will return the index of into the ipr_error_table
2427 * for the specified IOASC. If the IOASC is not in the table,
2428 * 0 will be returned, which points to the entry used for unknown errors.
2429 *
2430 * Return value:
2431 * index into the ipr_error_table
2432 **/
2433 static u32 ipr_get_error(u32 ioasc)
2434 {
2435 int i;
2436
2437 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2438 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2439 return i;
2440
2441 return 0;
2442 }
2443
2444 /**
2445 * ipr_handle_log_data - Log an adapter error.
2446 * @ioa_cfg: ioa config struct
2447 * @hostrcb: hostrcb struct
2448 *
2449 * This function logs an adapter error to the system.
2450 *
2451 * Return value:
2452 * none
2453 **/
2454 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2455 struct ipr_hostrcb *hostrcb)
2456 {
2457 u32 ioasc;
2458 int error_index;
2459 struct ipr_hostrcb_type_21_error *error;
2460
2461 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2462 return;
2463
2464 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2465 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2466
2467 if (ioa_cfg->sis64)
2468 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2469 else
2470 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2471
2472 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2473 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2474 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2475 scsi_report_bus_reset(ioa_cfg->host,
2476 hostrcb->hcam.u.error.fd_res_addr.bus);
2477 }
2478
2479 error_index = ipr_get_error(ioasc);
2480
2481 if (!ipr_error_table[error_index].log_hcam)
2482 return;
2483
2484 if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2485 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2486 error = &hostrcb->hcam.u.error64.u.type_21_error;
2487
2488 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2489 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2490 return;
2491 }
2492
2493 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2494
2495 /* Set indication we have logged an error */
2496 ioa_cfg->errors_logged++;
2497
2498 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2499 return;
2500 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2501 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2502
2503 switch (hostrcb->hcam.overlay_id) {
2504 case IPR_HOST_RCB_OVERLAY_ID_2:
2505 ipr_log_cache_error(ioa_cfg, hostrcb);
2506 break;
2507 case IPR_HOST_RCB_OVERLAY_ID_3:
2508 ipr_log_config_error(ioa_cfg, hostrcb);
2509 break;
2510 case IPR_HOST_RCB_OVERLAY_ID_4:
2511 case IPR_HOST_RCB_OVERLAY_ID_6:
2512 ipr_log_array_error(ioa_cfg, hostrcb);
2513 break;
2514 case IPR_HOST_RCB_OVERLAY_ID_7:
2515 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2516 break;
2517 case IPR_HOST_RCB_OVERLAY_ID_12:
2518 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2519 break;
2520 case IPR_HOST_RCB_OVERLAY_ID_13:
2521 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2522 break;
2523 case IPR_HOST_RCB_OVERLAY_ID_14:
2524 case IPR_HOST_RCB_OVERLAY_ID_16:
2525 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2526 break;
2527 case IPR_HOST_RCB_OVERLAY_ID_17:
2528 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2529 break;
2530 case IPR_HOST_RCB_OVERLAY_ID_20:
2531 ipr_log_fabric_error(ioa_cfg, hostrcb);
2532 break;
2533 case IPR_HOST_RCB_OVERLAY_ID_21:
2534 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2535 break;
2536 case IPR_HOST_RCB_OVERLAY_ID_23:
2537 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2538 break;
2539 case IPR_HOST_RCB_OVERLAY_ID_24:
2540 case IPR_HOST_RCB_OVERLAY_ID_26:
2541 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2542 break;
2543 case IPR_HOST_RCB_OVERLAY_ID_30:
2544 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2545 break;
2546 case IPR_HOST_RCB_OVERLAY_ID_1:
2547 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2548 default:
2549 ipr_log_generic_error(ioa_cfg, hostrcb);
2550 break;
2551 }
2552 }
2553
2554 /**
2555 * ipr_process_error - Op done function for an adapter error log.
2556 * @ipr_cmd: ipr command struct
2557 *
2558 * This function is the op done function for an error log host
2559 * controlled async from the adapter. It will log the error and
2560 * send the HCAM back to the adapter.
2561 *
2562 * Return value:
2563 * none
2564 **/
2565 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2566 {
2567 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2568 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2569 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2570 u32 fd_ioasc;
2571
2572 if (ioa_cfg->sis64)
2573 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2574 else
2575 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2576
2577 list_del(&hostrcb->queue);
2578 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2579
2580 if (!ioasc) {
2581 ipr_handle_log_data(ioa_cfg, hostrcb);
2582 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2583 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2584 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2585 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2586 dev_err(&ioa_cfg->pdev->dev,
2587 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2588 }
2589
2590 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2591 }
2592
2593 /**
2594 * ipr_timeout - An internally generated op has timed out.
2595 * @ipr_cmd: ipr command struct
2596 *
2597 * This function blocks host requests and initiates an
2598 * adapter reset.
2599 *
2600 * Return value:
2601 * none
2602 **/
2603 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2604 {
2605 unsigned long lock_flags = 0;
2606 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2607
2608 ENTER;
2609 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2610
2611 ioa_cfg->errors_logged++;
2612 dev_err(&ioa_cfg->pdev->dev,
2613 "Adapter being reset due to command timeout.\n");
2614
2615 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2616 ioa_cfg->sdt_state = GET_DUMP;
2617
2618 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2619 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2620
2621 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2622 LEAVE;
2623 }
2624
2625 /**
2626 * ipr_oper_timeout - Adapter timed out transitioning to operational
2627 * @ipr_cmd: ipr command struct
2628 *
2629 * This function blocks host requests and initiates an
2630 * adapter reset.
2631 *
2632 * Return value:
2633 * none
2634 **/
2635 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2636 {
2637 unsigned long lock_flags = 0;
2638 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2639
2640 ENTER;
2641 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2642
2643 ioa_cfg->errors_logged++;
2644 dev_err(&ioa_cfg->pdev->dev,
2645 "Adapter timed out transitioning to operational.\n");
2646
2647 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2648 ioa_cfg->sdt_state = GET_DUMP;
2649
2650 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2651 if (ipr_fastfail)
2652 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2654 }
2655
2656 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2657 LEAVE;
2658 }
2659
2660 /**
2661 * ipr_find_ses_entry - Find matching SES in SES table
2662 * @res: resource entry struct of SES
2663 *
2664 * Return value:
2665 * pointer to SES table entry / NULL on failure
2666 **/
2667 static const struct ipr_ses_table_entry *
2668 ipr_find_ses_entry(struct ipr_resource_entry *res)
2669 {
2670 int i, j, matches;
2671 struct ipr_std_inq_vpids *vpids;
2672 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2673
2674 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2675 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2676 if (ste->compare_product_id_byte[j] == 'X') {
2677 vpids = &res->std_inq_data.vpids;
2678 if (vpids->product_id[j] == ste->product_id[j])
2679 matches++;
2680 else
2681 break;
2682 } else
2683 matches++;
2684 }
2685
2686 if (matches == IPR_PROD_ID_LEN)
2687 return ste;
2688 }
2689
2690 return NULL;
2691 }
2692
2693 /**
2694 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2695 * @ioa_cfg: ioa config struct
2696 * @bus: SCSI bus
2697 * @bus_width: bus width
2698 *
2699 * Return value:
2700 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2701 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2702 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2703 * max 160MHz = max 320MB/sec).
2704 **/
2705 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2706 {
2707 struct ipr_resource_entry *res;
2708 const struct ipr_ses_table_entry *ste;
2709 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2710
2711 /* Loop through each config table entry in the config table buffer */
2712 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2713 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2714 continue;
2715
2716 if (bus != res->bus)
2717 continue;
2718
2719 if (!(ste = ipr_find_ses_entry(res)))
2720 continue;
2721
2722 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2723 }
2724
2725 return max_xfer_rate;
2726 }
2727
2728 /**
2729 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2730 * @ioa_cfg: ioa config struct
2731 * @max_delay: max delay in micro-seconds to wait
2732 *
2733 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2734 *
2735 * Return value:
2736 * 0 on success / other on failure
2737 **/
2738 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2739 {
2740 volatile u32 pcii_reg;
2741 int delay = 1;
2742
2743 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2744 while (delay < max_delay) {
2745 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2746
2747 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2748 return 0;
2749
2750 /* udelay cannot be used if delay is more than a few milliseconds */
2751 if ((delay / 1000) > MAX_UDELAY_MS)
2752 mdelay(delay / 1000);
2753 else
2754 udelay(delay);
2755
2756 delay += delay;
2757 }
2758 return -EIO;
2759 }
2760
2761 /**
2762 * ipr_get_sis64_dump_data_section - Dump IOA memory
2763 * @ioa_cfg: ioa config struct
2764 * @start_addr: adapter address to dump
2765 * @dest: destination kernel buffer
2766 * @length_in_words: length to dump in 4 byte words
2767 *
2768 * Return value:
2769 * 0 on success
2770 **/
2771 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2772 u32 start_addr,
2773 __be32 *dest, u32 length_in_words)
2774 {
2775 int i;
2776
2777 for (i = 0; i < length_in_words; i++) {
2778 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2779 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2780 dest++;
2781 }
2782
2783 return 0;
2784 }
2785
2786 /**
2787 * ipr_get_ldump_data_section - Dump IOA memory
2788 * @ioa_cfg: ioa config struct
2789 * @start_addr: adapter address to dump
2790 * @dest: destination kernel buffer
2791 * @length_in_words: length to dump in 4 byte words
2792 *
2793 * Return value:
2794 * 0 on success / -EIO on failure
2795 **/
2796 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2797 u32 start_addr,
2798 __be32 *dest, u32 length_in_words)
2799 {
2800 volatile u32 temp_pcii_reg;
2801 int i, delay = 0;
2802
2803 if (ioa_cfg->sis64)
2804 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2805 dest, length_in_words);
2806
2807 /* Write IOA interrupt reg starting LDUMP state */
2808 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2809 ioa_cfg->regs.set_uproc_interrupt_reg32);
2810
2811 /* Wait for IO debug acknowledge */
2812 if (ipr_wait_iodbg_ack(ioa_cfg,
2813 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2814 dev_err(&ioa_cfg->pdev->dev,
2815 "IOA dump long data transfer timeout\n");
2816 return -EIO;
2817 }
2818
2819 /* Signal LDUMP interlocked - clear IO debug ack */
2820 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2821 ioa_cfg->regs.clr_interrupt_reg);
2822
2823 /* Write Mailbox with starting address */
2824 writel(start_addr, ioa_cfg->ioa_mailbox);
2825
2826 /* Signal address valid - clear IOA Reset alert */
2827 writel(IPR_UPROCI_RESET_ALERT,
2828 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2829
2830 for (i = 0; i < length_in_words; i++) {
2831 /* Wait for IO debug acknowledge */
2832 if (ipr_wait_iodbg_ack(ioa_cfg,
2833 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2834 dev_err(&ioa_cfg->pdev->dev,
2835 "IOA dump short data transfer timeout\n");
2836 return -EIO;
2837 }
2838
2839 /* Read data from mailbox and increment destination pointer */
2840 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2841 dest++;
2842
2843 /* For all but the last word of data, signal data received */
2844 if (i < (length_in_words - 1)) {
2845 /* Signal dump data received - Clear IO debug Ack */
2846 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2847 ioa_cfg->regs.clr_interrupt_reg);
2848 }
2849 }
2850
2851 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2852 writel(IPR_UPROCI_RESET_ALERT,
2853 ioa_cfg->regs.set_uproc_interrupt_reg32);
2854
2855 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2856 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2857
2858 /* Signal dump data received - Clear IO debug Ack */
2859 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2860 ioa_cfg->regs.clr_interrupt_reg);
2861
2862 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2863 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2864 temp_pcii_reg =
2865 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2866
2867 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2868 return 0;
2869
2870 udelay(10);
2871 delay += 10;
2872 }
2873
2874 return 0;
2875 }
2876
2877 #ifdef CONFIG_SCSI_IPR_DUMP
2878 /**
2879 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2880 * @ioa_cfg: ioa config struct
2881 * @pci_address: adapter address
2882 * @length: length of data to copy
2883 *
2884 * Copy data from PCI adapter to kernel buffer.
2885 * Note: length MUST be a 4 byte multiple
2886 * Return value:
2887 * 0 on success / other on failure
2888 **/
2889 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2890 unsigned long pci_address, u32 length)
2891 {
2892 int bytes_copied = 0;
2893 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2894 __be32 *page;
2895 unsigned long lock_flags = 0;
2896 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2897
2898 if (ioa_cfg->sis64)
2899 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2900 else
2901 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2902
2903 while (bytes_copied < length &&
2904 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2905 if (ioa_dump->page_offset >= PAGE_SIZE ||
2906 ioa_dump->page_offset == 0) {
2907 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2908
2909 if (!page) {
2910 ipr_trace;
2911 return bytes_copied;
2912 }
2913
2914 ioa_dump->page_offset = 0;
2915 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2916 ioa_dump->next_page_index++;
2917 } else
2918 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2919
2920 rem_len = length - bytes_copied;
2921 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2922 cur_len = min(rem_len, rem_page_len);
2923
2924 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2925 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2926 rc = -EIO;
2927 } else {
2928 rc = ipr_get_ldump_data_section(ioa_cfg,
2929 pci_address + bytes_copied,
2930 &page[ioa_dump->page_offset / 4],
2931 (cur_len / sizeof(u32)));
2932 }
2933 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2934
2935 if (!rc) {
2936 ioa_dump->page_offset += cur_len;
2937 bytes_copied += cur_len;
2938 } else {
2939 ipr_trace;
2940 break;
2941 }
2942 schedule();
2943 }
2944
2945 return bytes_copied;
2946 }
2947
2948 /**
2949 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2950 * @hdr: dump entry header struct
2951 *
2952 * Return value:
2953 * nothing
2954 **/
2955 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2956 {
2957 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2958 hdr->num_elems = 1;
2959 hdr->offset = sizeof(*hdr);
2960 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2961 }
2962
2963 /**
2964 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2965 * @ioa_cfg: ioa config struct
2966 * @driver_dump: driver dump struct
2967 *
2968 * Return value:
2969 * nothing
2970 **/
2971 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2972 struct ipr_driver_dump *driver_dump)
2973 {
2974 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2975
2976 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2977 driver_dump->ioa_type_entry.hdr.len =
2978 sizeof(struct ipr_dump_ioa_type_entry) -
2979 sizeof(struct ipr_dump_entry_header);
2980 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2981 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2982 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2983 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2984 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2985 ucode_vpd->minor_release[1];
2986 driver_dump->hdr.num_entries++;
2987 }
2988
2989 /**
2990 * ipr_dump_version_data - Fill in the driver version in the dump.
2991 * @ioa_cfg: ioa config struct
2992 * @driver_dump: driver dump struct
2993 *
2994 * Return value:
2995 * nothing
2996 **/
2997 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2998 struct ipr_driver_dump *driver_dump)
2999 {
3000 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3001 driver_dump->version_entry.hdr.len =
3002 sizeof(struct ipr_dump_version_entry) -
3003 sizeof(struct ipr_dump_entry_header);
3004 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3005 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3006 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3007 driver_dump->hdr.num_entries++;
3008 }
3009
3010 /**
3011 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3012 * @ioa_cfg: ioa config struct
3013 * @driver_dump: driver dump struct
3014 *
3015 * Return value:
3016 * nothing
3017 **/
3018 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3019 struct ipr_driver_dump *driver_dump)
3020 {
3021 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3022 driver_dump->trace_entry.hdr.len =
3023 sizeof(struct ipr_dump_trace_entry) -
3024 sizeof(struct ipr_dump_entry_header);
3025 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3026 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3027 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3028 driver_dump->hdr.num_entries++;
3029 }
3030
3031 /**
3032 * ipr_dump_location_data - Fill in the IOA location in the dump.
3033 * @ioa_cfg: ioa config struct
3034 * @driver_dump: driver dump struct
3035 *
3036 * Return value:
3037 * nothing
3038 **/
3039 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3040 struct ipr_driver_dump *driver_dump)
3041 {
3042 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3043 driver_dump->location_entry.hdr.len =
3044 sizeof(struct ipr_dump_location_entry) -
3045 sizeof(struct ipr_dump_entry_header);
3046 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3047 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3048 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3049 driver_dump->hdr.num_entries++;
3050 }
3051
3052 /**
3053 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3054 * @ioa_cfg: ioa config struct
3055 * @dump: dump struct
3056 *
3057 * Return value:
3058 * nothing
3059 **/
3060 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3061 {
3062 unsigned long start_addr, sdt_word;
3063 unsigned long lock_flags = 0;
3064 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3065 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3066 u32 num_entries, max_num_entries, start_off, end_off;
3067 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3068 struct ipr_sdt *sdt;
3069 int valid = 1;
3070 int i;
3071
3072 ENTER;
3073
3074 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3075
3076 if (ioa_cfg->sdt_state != READ_DUMP) {
3077 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3078 return;
3079 }
3080
3081 if (ioa_cfg->sis64) {
3082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3083 ssleep(IPR_DUMP_DELAY_SECONDS);
3084 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3085 }
3086
3087 start_addr = readl(ioa_cfg->ioa_mailbox);
3088
3089 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3090 dev_err(&ioa_cfg->pdev->dev,
3091 "Invalid dump table format: %lx\n", start_addr);
3092 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3093 return;
3094 }
3095
3096 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3097
3098 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3099
3100 /* Initialize the overall dump header */
3101 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3102 driver_dump->hdr.num_entries = 1;
3103 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3104 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3105 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3106 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3107
3108 ipr_dump_version_data(ioa_cfg, driver_dump);
3109 ipr_dump_location_data(ioa_cfg, driver_dump);
3110 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3111 ipr_dump_trace_data(ioa_cfg, driver_dump);
3112
3113 /* Update dump_header */
3114 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3115
3116 /* IOA Dump entry */
3117 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3118 ioa_dump->hdr.len = 0;
3119 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3120 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3121
3122 /* First entries in sdt are actually a list of dump addresses and
3123 lengths to gather the real dump data. sdt represents the pointer
3124 to the ioa generated dump table. Dump data will be extracted based
3125 on entries in this table */
3126 sdt = &ioa_dump->sdt;
3127
3128 if (ioa_cfg->sis64) {
3129 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3130 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3131 } else {
3132 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3133 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3134 }
3135
3136 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3137 (max_num_entries * sizeof(struct ipr_sdt_entry));
3138 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3139 bytes_to_copy / sizeof(__be32));
3140
3141 /* Smart Dump table is ready to use and the first entry is valid */
3142 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3143 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3144 dev_err(&ioa_cfg->pdev->dev,
3145 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3146 rc, be32_to_cpu(sdt->hdr.state));
3147 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3148 ioa_cfg->sdt_state = DUMP_OBTAINED;
3149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3150 return;
3151 }
3152
3153 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3154
3155 if (num_entries > max_num_entries)
3156 num_entries = max_num_entries;
3157
3158 /* Update dump length to the actual data to be copied */
3159 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3160 if (ioa_cfg->sis64)
3161 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3162 else
3163 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3164
3165 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3166
3167 for (i = 0; i < num_entries; i++) {
3168 if (ioa_dump->hdr.len > max_dump_size) {
3169 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3170 break;
3171 }
3172
3173 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3174 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3175 if (ioa_cfg->sis64)
3176 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3177 else {
3178 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3179 end_off = be32_to_cpu(sdt->entry[i].end_token);
3180
3181 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3182 bytes_to_copy = end_off - start_off;
3183 else
3184 valid = 0;
3185 }
3186 if (valid) {
3187 if (bytes_to_copy > max_dump_size) {
3188 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3189 continue;
3190 }
3191
3192 /* Copy data from adapter to driver buffers */
3193 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3194 bytes_to_copy);
3195
3196 ioa_dump->hdr.len += bytes_copied;
3197
3198 if (bytes_copied != bytes_to_copy) {
3199 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3200 break;
3201 }
3202 }
3203 }
3204 }
3205
3206 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3207
3208 /* Update dump_header */
3209 driver_dump->hdr.len += ioa_dump->hdr.len;
3210 wmb();
3211 ioa_cfg->sdt_state = DUMP_OBTAINED;
3212 LEAVE;
3213 }
3214
3215 #else
3216 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3217 #endif
3218
3219 /**
3220 * ipr_release_dump - Free adapter dump memory
3221 * @kref: kref struct
3222 *
3223 * Return value:
3224 * nothing
3225 **/
3226 static void ipr_release_dump(struct kref *kref)
3227 {
3228 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3229 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3230 unsigned long lock_flags = 0;
3231 int i;
3232
3233 ENTER;
3234 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3235 ioa_cfg->dump = NULL;
3236 ioa_cfg->sdt_state = INACTIVE;
3237 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3238
3239 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3240 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3241
3242 vfree(dump->ioa_dump.ioa_data);
3243 kfree(dump);
3244 LEAVE;
3245 }
3246
3247 /**
3248 * ipr_worker_thread - Worker thread
3249 * @work: ioa config struct
3250 *
3251 * Called at task level from a work thread. This function takes care
3252 * of adding and removing device from the mid-layer as configuration
3253 * changes are detected by the adapter.
3254 *
3255 * Return value:
3256 * nothing
3257 **/
3258 static void ipr_worker_thread(struct work_struct *work)
3259 {
3260 unsigned long lock_flags;
3261 struct ipr_resource_entry *res;
3262 struct scsi_device *sdev;
3263 struct ipr_dump *dump;
3264 struct ipr_ioa_cfg *ioa_cfg =
3265 container_of(work, struct ipr_ioa_cfg, work_q);
3266 u8 bus, target, lun;
3267 int did_work;
3268
3269 ENTER;
3270 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3271
3272 if (ioa_cfg->sdt_state == READ_DUMP) {
3273 dump = ioa_cfg->dump;
3274 if (!dump) {
3275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3276 return;
3277 }
3278 kref_get(&dump->kref);
3279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3280 ipr_get_ioa_dump(ioa_cfg, dump);
3281 kref_put(&dump->kref, ipr_release_dump);
3282
3283 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3284 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3285 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3287 return;
3288 }
3289
3290 restart:
3291 do {
3292 did_work = 0;
3293 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3295 return;
3296 }
3297
3298 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3299 if (res->del_from_ml && res->sdev) {
3300 did_work = 1;
3301 sdev = res->sdev;
3302 if (!scsi_device_get(sdev)) {
3303 if (!res->add_to_ml)
3304 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3305 else
3306 res->del_from_ml = 0;
3307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308 scsi_remove_device(sdev);
3309 scsi_device_put(sdev);
3310 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3311 }
3312 break;
3313 }
3314 }
3315 } while (did_work);
3316
3317 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3318 if (res->add_to_ml) {
3319 bus = res->bus;
3320 target = res->target;
3321 lun = res->lun;
3322 res->add_to_ml = 0;
3323 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3324 scsi_add_device(ioa_cfg->host, bus, target, lun);
3325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3326 goto restart;
3327 }
3328 }
3329
3330 ioa_cfg->scan_done = 1;
3331 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3332 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3333 LEAVE;
3334 }
3335
3336 #ifdef CONFIG_SCSI_IPR_TRACE
3337 /**
3338 * ipr_read_trace - Dump the adapter trace
3339 * @filp: open sysfs file
3340 * @kobj: kobject struct
3341 * @bin_attr: bin_attribute struct
3342 * @buf: buffer
3343 * @off: offset
3344 * @count: buffer size
3345 *
3346 * Return value:
3347 * number of bytes printed to buffer
3348 **/
3349 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3350 struct bin_attribute *bin_attr,
3351 char *buf, loff_t off, size_t count)
3352 {
3353 struct device *dev = container_of(kobj, struct device, kobj);
3354 struct Scsi_Host *shost = class_to_shost(dev);
3355 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3356 unsigned long lock_flags = 0;
3357 ssize_t ret;
3358
3359 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3360 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3361 IPR_TRACE_SIZE);
3362 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3363
3364 return ret;
3365 }
3366
3367 static struct bin_attribute ipr_trace_attr = {
3368 .attr = {
3369 .name = "trace",
3370 .mode = S_IRUGO,
3371 },
3372 .size = 0,
3373 .read = ipr_read_trace,
3374 };
3375 #endif
3376
3377 /**
3378 * ipr_show_fw_version - Show the firmware version
3379 * @dev: class device struct
3380 * @buf: buffer
3381 *
3382 * Return value:
3383 * number of bytes printed to buffer
3384 **/
3385 static ssize_t ipr_show_fw_version(struct device *dev,
3386 struct device_attribute *attr, char *buf)
3387 {
3388 struct Scsi_Host *shost = class_to_shost(dev);
3389 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3390 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3391 unsigned long lock_flags = 0;
3392 int len;
3393
3394 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3395 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3396 ucode_vpd->major_release, ucode_vpd->card_type,
3397 ucode_vpd->minor_release[0],
3398 ucode_vpd->minor_release[1]);
3399 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3400 return len;
3401 }
3402
3403 static struct device_attribute ipr_fw_version_attr = {
3404 .attr = {
3405 .name = "fw_version",
3406 .mode = S_IRUGO,
3407 },
3408 .show = ipr_show_fw_version,
3409 };
3410
3411 /**
3412 * ipr_show_log_level - Show the adapter's error logging level
3413 * @dev: class device struct
3414 * @buf: buffer
3415 *
3416 * Return value:
3417 * number of bytes printed to buffer
3418 **/
3419 static ssize_t ipr_show_log_level(struct device *dev,
3420 struct device_attribute *attr, char *buf)
3421 {
3422 struct Scsi_Host *shost = class_to_shost(dev);
3423 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3424 unsigned long lock_flags = 0;
3425 int len;
3426
3427 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3428 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3429 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3430 return len;
3431 }
3432
3433 /**
3434 * ipr_store_log_level - Change the adapter's error logging level
3435 * @dev: class device struct
3436 * @buf: buffer
3437 *
3438 * Return value:
3439 * number of bytes printed to buffer
3440 **/
3441 static ssize_t ipr_store_log_level(struct device *dev,
3442 struct device_attribute *attr,
3443 const char *buf, size_t count)
3444 {
3445 struct Scsi_Host *shost = class_to_shost(dev);
3446 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3447 unsigned long lock_flags = 0;
3448
3449 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3450 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3451 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3452 return strlen(buf);
3453 }
3454
3455 static struct device_attribute ipr_log_level_attr = {
3456 .attr = {
3457 .name = "log_level",
3458 .mode = S_IRUGO | S_IWUSR,
3459 },
3460 .show = ipr_show_log_level,
3461 .store = ipr_store_log_level
3462 };
3463
3464 /**
3465 * ipr_store_diagnostics - IOA Diagnostics interface
3466 * @dev: device struct
3467 * @buf: buffer
3468 * @count: buffer size
3469 *
3470 * This function will reset the adapter and wait a reasonable
3471 * amount of time for any errors that the adapter might log.
3472 *
3473 * Return value:
3474 * count on success / other on failure
3475 **/
3476 static ssize_t ipr_store_diagnostics(struct device *dev,
3477 struct device_attribute *attr,
3478 const char *buf, size_t count)
3479 {
3480 struct Scsi_Host *shost = class_to_shost(dev);
3481 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3482 unsigned long lock_flags = 0;
3483 int rc = count;
3484
3485 if (!capable(CAP_SYS_ADMIN))
3486 return -EACCES;
3487
3488 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3489 while (ioa_cfg->in_reset_reload) {
3490 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3491 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3492 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3493 }
3494
3495 ioa_cfg->errors_logged = 0;
3496 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3497
3498 if (ioa_cfg->in_reset_reload) {
3499 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3500 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3501
3502 /* Wait for a second for any errors to be logged */
3503 msleep(1000);
3504 } else {
3505 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3506 return -EIO;
3507 }
3508
3509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3510 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3511 rc = -EIO;
3512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3513
3514 return rc;
3515 }
3516
3517 static struct device_attribute ipr_diagnostics_attr = {
3518 .attr = {
3519 .name = "run_diagnostics",
3520 .mode = S_IWUSR,
3521 },
3522 .store = ipr_store_diagnostics
3523 };
3524
3525 /**
3526 * ipr_show_adapter_state - Show the adapter's state
3527 * @class_dev: device struct
3528 * @buf: buffer
3529 *
3530 * Return value:
3531 * number of bytes printed to buffer
3532 **/
3533 static ssize_t ipr_show_adapter_state(struct device *dev,
3534 struct device_attribute *attr, char *buf)
3535 {
3536 struct Scsi_Host *shost = class_to_shost(dev);
3537 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3538 unsigned long lock_flags = 0;
3539 int len;
3540
3541 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3542 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3543 len = snprintf(buf, PAGE_SIZE, "offline\n");
3544 else
3545 len = snprintf(buf, PAGE_SIZE, "online\n");
3546 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3547 return len;
3548 }
3549
3550 /**
3551 * ipr_store_adapter_state - Change adapter state
3552 * @dev: device struct
3553 * @buf: buffer
3554 * @count: buffer size
3555 *
3556 * This function will change the adapter's state.
3557 *
3558 * Return value:
3559 * count on success / other on failure
3560 **/
3561 static ssize_t ipr_store_adapter_state(struct device *dev,
3562 struct device_attribute *attr,
3563 const char *buf, size_t count)
3564 {
3565 struct Scsi_Host *shost = class_to_shost(dev);
3566 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3567 unsigned long lock_flags;
3568 int result = count, i;
3569
3570 if (!capable(CAP_SYS_ADMIN))
3571 return -EACCES;
3572
3573 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3574 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3575 !strncmp(buf, "online", 6)) {
3576 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3577 spin_lock(&ioa_cfg->hrrq[i]._lock);
3578 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3579 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3580 }
3581 wmb();
3582 ioa_cfg->reset_retries = 0;
3583 ioa_cfg->in_ioa_bringdown = 0;
3584 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3585 }
3586 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3587 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3588
3589 return result;
3590 }
3591
3592 static struct device_attribute ipr_ioa_state_attr = {
3593 .attr = {
3594 .name = "online_state",
3595 .mode = S_IRUGO | S_IWUSR,
3596 },
3597 .show = ipr_show_adapter_state,
3598 .store = ipr_store_adapter_state
3599 };
3600
3601 /**
3602 * ipr_store_reset_adapter - Reset the adapter
3603 * @dev: device struct
3604 * @buf: buffer
3605 * @count: buffer size
3606 *
3607 * This function will reset the adapter.
3608 *
3609 * Return value:
3610 * count on success / other on failure
3611 **/
3612 static ssize_t ipr_store_reset_adapter(struct device *dev,
3613 struct device_attribute *attr,
3614 const char *buf, size_t count)
3615 {
3616 struct Scsi_Host *shost = class_to_shost(dev);
3617 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3618 unsigned long lock_flags;
3619 int result = count;
3620
3621 if (!capable(CAP_SYS_ADMIN))
3622 return -EACCES;
3623
3624 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3625 if (!ioa_cfg->in_reset_reload)
3626 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3627 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3628 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3629
3630 return result;
3631 }
3632
3633 static struct device_attribute ipr_ioa_reset_attr = {
3634 .attr = {
3635 .name = "reset_host",
3636 .mode = S_IWUSR,
3637 },
3638 .store = ipr_store_reset_adapter
3639 };
3640
3641 static int ipr_iopoll(struct 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 int len, result, dnld_size;
4006
4007 if (!capable(CAP_SYS_ADMIN))
4008 return -EACCES;
4009
4010 len = snprintf(fname, 99, "%s", buf);
4011 fname[len-1] = '\0';
4012
4013 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4014 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4015 return -EIO;
4016 }
4017
4018 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4019
4020 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4021 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4022 sglist = ipr_alloc_ucode_buffer(dnld_size);
4023
4024 if (!sglist) {
4025 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4026 release_firmware(fw_entry);
4027 return -ENOMEM;
4028 }
4029
4030 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4031
4032 if (result) {
4033 dev_err(&ioa_cfg->pdev->dev,
4034 "Microcode buffer copy to DMA buffer failed\n");
4035 goto out;
4036 }
4037
4038 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4039
4040 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4041
4042 if (!result)
4043 result = count;
4044 out:
4045 ipr_free_ucode_buffer(sglist);
4046 release_firmware(fw_entry);
4047 return result;
4048 }
4049
4050 static struct device_attribute ipr_update_fw_attr = {
4051 .attr = {
4052 .name = "update_fw",
4053 .mode = S_IWUSR,
4054 },
4055 .store = ipr_store_update_fw
4056 };
4057
4058 /**
4059 * ipr_show_fw_type - Show the adapter's firmware type.
4060 * @dev: class device struct
4061 * @buf: buffer
4062 *
4063 * Return value:
4064 * number of bytes printed to buffer
4065 **/
4066 static ssize_t ipr_show_fw_type(struct device *dev,
4067 struct device_attribute *attr, char *buf)
4068 {
4069 struct Scsi_Host *shost = class_to_shost(dev);
4070 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4071 unsigned long lock_flags = 0;
4072 int len;
4073
4074 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4075 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4076 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4077 return len;
4078 }
4079
4080 static struct device_attribute ipr_ioa_fw_type_attr = {
4081 .attr = {
4082 .name = "fw_type",
4083 .mode = S_IRUGO,
4084 },
4085 .show = ipr_show_fw_type
4086 };
4087
4088 static struct device_attribute *ipr_ioa_attrs[] = {
4089 &ipr_fw_version_attr,
4090 &ipr_log_level_attr,
4091 &ipr_diagnostics_attr,
4092 &ipr_ioa_state_attr,
4093 &ipr_ioa_reset_attr,
4094 &ipr_update_fw_attr,
4095 &ipr_ioa_fw_type_attr,
4096 &ipr_iopoll_weight_attr,
4097 NULL,
4098 };
4099
4100 #ifdef CONFIG_SCSI_IPR_DUMP
4101 /**
4102 * ipr_read_dump - Dump the adapter
4103 * @filp: open sysfs file
4104 * @kobj: kobject struct
4105 * @bin_attr: bin_attribute struct
4106 * @buf: buffer
4107 * @off: offset
4108 * @count: buffer size
4109 *
4110 * Return value:
4111 * number of bytes printed to buffer
4112 **/
4113 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4114 struct bin_attribute *bin_attr,
4115 char *buf, loff_t off, size_t count)
4116 {
4117 struct device *cdev = container_of(kobj, struct device, kobj);
4118 struct Scsi_Host *shost = class_to_shost(cdev);
4119 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4120 struct ipr_dump *dump;
4121 unsigned long lock_flags = 0;
4122 char *src;
4123 int len, sdt_end;
4124 size_t rc = count;
4125
4126 if (!capable(CAP_SYS_ADMIN))
4127 return -EACCES;
4128
4129 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4130 dump = ioa_cfg->dump;
4131
4132 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4133 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4134 return 0;
4135 }
4136 kref_get(&dump->kref);
4137 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4138
4139 if (off > dump->driver_dump.hdr.len) {
4140 kref_put(&dump->kref, ipr_release_dump);
4141 return 0;
4142 }
4143
4144 if (off + count > dump->driver_dump.hdr.len) {
4145 count = dump->driver_dump.hdr.len - off;
4146 rc = count;
4147 }
4148
4149 if (count && off < sizeof(dump->driver_dump)) {
4150 if (off + count > sizeof(dump->driver_dump))
4151 len = sizeof(dump->driver_dump) - off;
4152 else
4153 len = count;
4154 src = (u8 *)&dump->driver_dump + off;
4155 memcpy(buf, src, len);
4156 buf += len;
4157 off += len;
4158 count -= len;
4159 }
4160
4161 off -= sizeof(dump->driver_dump);
4162
4163 if (ioa_cfg->sis64)
4164 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4165 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4166 sizeof(struct ipr_sdt_entry));
4167 else
4168 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4169 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4170
4171 if (count && off < sdt_end) {
4172 if (off + count > sdt_end)
4173 len = sdt_end - off;
4174 else
4175 len = count;
4176 src = (u8 *)&dump->ioa_dump + off;
4177 memcpy(buf, src, len);
4178 buf += len;
4179 off += len;
4180 count -= len;
4181 }
4182
4183 off -= sdt_end;
4184
4185 while (count) {
4186 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4187 len = PAGE_ALIGN(off) - off;
4188 else
4189 len = count;
4190 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4191 src += off & ~PAGE_MASK;
4192 memcpy(buf, src, len);
4193 buf += len;
4194 off += len;
4195 count -= len;
4196 }
4197
4198 kref_put(&dump->kref, ipr_release_dump);
4199 return rc;
4200 }
4201
4202 /**
4203 * ipr_alloc_dump - Prepare for adapter dump
4204 * @ioa_cfg: ioa config struct
4205 *
4206 * Return value:
4207 * 0 on success / other on failure
4208 **/
4209 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4210 {
4211 struct ipr_dump *dump;
4212 __be32 **ioa_data;
4213 unsigned long lock_flags = 0;
4214
4215 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4216
4217 if (!dump) {
4218 ipr_err("Dump memory allocation failed\n");
4219 return -ENOMEM;
4220 }
4221
4222 if (ioa_cfg->sis64)
4223 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4224 else
4225 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4226
4227 if (!ioa_data) {
4228 ipr_err("Dump memory allocation failed\n");
4229 kfree(dump);
4230 return -ENOMEM;
4231 }
4232
4233 dump->ioa_dump.ioa_data = ioa_data;
4234
4235 kref_init(&dump->kref);
4236 dump->ioa_cfg = ioa_cfg;
4237
4238 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4239
4240 if (INACTIVE != ioa_cfg->sdt_state) {
4241 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4242 vfree(dump->ioa_dump.ioa_data);
4243 kfree(dump);
4244 return 0;
4245 }
4246
4247 ioa_cfg->dump = dump;
4248 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4249 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4250 ioa_cfg->dump_taken = 1;
4251 schedule_work(&ioa_cfg->work_q);
4252 }
4253 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4254
4255 return 0;
4256 }
4257
4258 /**
4259 * ipr_free_dump - Free adapter dump memory
4260 * @ioa_cfg: ioa config struct
4261 *
4262 * Return value:
4263 * 0 on success / other on failure
4264 **/
4265 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4266 {
4267 struct ipr_dump *dump;
4268 unsigned long lock_flags = 0;
4269
4270 ENTER;
4271
4272 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4273 dump = ioa_cfg->dump;
4274 if (!dump) {
4275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4276 return 0;
4277 }
4278
4279 ioa_cfg->dump = NULL;
4280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4281
4282 kref_put(&dump->kref, ipr_release_dump);
4283
4284 LEAVE;
4285 return 0;
4286 }
4287
4288 /**
4289 * ipr_write_dump - Setup dump state of adapter
4290 * @filp: open sysfs file
4291 * @kobj: kobject struct
4292 * @bin_attr: bin_attribute struct
4293 * @buf: buffer
4294 * @off: offset
4295 * @count: buffer size
4296 *
4297 * Return value:
4298 * number of bytes printed to buffer
4299 **/
4300 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4301 struct bin_attribute *bin_attr,
4302 char *buf, loff_t off, size_t count)
4303 {
4304 struct device *cdev = container_of(kobj, struct device, kobj);
4305 struct Scsi_Host *shost = class_to_shost(cdev);
4306 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4307 int rc;
4308
4309 if (!capable(CAP_SYS_ADMIN))
4310 return -EACCES;
4311
4312 if (buf[0] == '1')
4313 rc = ipr_alloc_dump(ioa_cfg);
4314 else if (buf[0] == '0')
4315 rc = ipr_free_dump(ioa_cfg);
4316 else
4317 return -EINVAL;
4318
4319 if (rc)
4320 return rc;
4321 else
4322 return count;
4323 }
4324
4325 static struct bin_attribute ipr_dump_attr = {
4326 .attr = {
4327 .name = "dump",
4328 .mode = S_IRUSR | S_IWUSR,
4329 },
4330 .size = 0,
4331 .read = ipr_read_dump,
4332 .write = ipr_write_dump
4333 };
4334 #else
4335 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4336 #endif
4337
4338 /**
4339 * ipr_change_queue_depth - Change the device's queue depth
4340 * @sdev: scsi device struct
4341 * @qdepth: depth to set
4342 * @reason: calling context
4343 *
4344 * Return value:
4345 * actual depth set
4346 **/
4347 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4348 {
4349 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4350 struct ipr_resource_entry *res;
4351 unsigned long lock_flags = 0;
4352
4353 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4354 res = (struct ipr_resource_entry *)sdev->hostdata;
4355
4356 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4357 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4358 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4359
4360 scsi_change_queue_depth(sdev, qdepth);
4361 return sdev->queue_depth;
4362 }
4363
4364 /**
4365 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4366 * @dev: device struct
4367 * @attr: device attribute structure
4368 * @buf: buffer
4369 *
4370 * Return value:
4371 * number of bytes printed to buffer
4372 **/
4373 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4374 {
4375 struct scsi_device *sdev = to_scsi_device(dev);
4376 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4377 struct ipr_resource_entry *res;
4378 unsigned long lock_flags = 0;
4379 ssize_t len = -ENXIO;
4380
4381 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4382 res = (struct ipr_resource_entry *)sdev->hostdata;
4383 if (res)
4384 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4386 return len;
4387 }
4388
4389 static struct device_attribute ipr_adapter_handle_attr = {
4390 .attr = {
4391 .name = "adapter_handle",
4392 .mode = S_IRUSR,
4393 },
4394 .show = ipr_show_adapter_handle
4395 };
4396
4397 /**
4398 * ipr_show_resource_path - Show the resource path or the resource address for
4399 * this device.
4400 * @dev: device struct
4401 * @attr: device attribute structure
4402 * @buf: buffer
4403 *
4404 * Return value:
4405 * number of bytes printed to buffer
4406 **/
4407 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4408 {
4409 struct scsi_device *sdev = to_scsi_device(dev);
4410 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4411 struct ipr_resource_entry *res;
4412 unsigned long lock_flags = 0;
4413 ssize_t len = -ENXIO;
4414 char buffer[IPR_MAX_RES_PATH_LENGTH];
4415
4416 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4417 res = (struct ipr_resource_entry *)sdev->hostdata;
4418 if (res && ioa_cfg->sis64)
4419 len = snprintf(buf, PAGE_SIZE, "%s\n",
4420 __ipr_format_res_path(res->res_path, buffer,
4421 sizeof(buffer)));
4422 else if (res)
4423 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4424 res->bus, res->target, res->lun);
4425
4426 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4427 return len;
4428 }
4429
4430 static struct device_attribute ipr_resource_path_attr = {
4431 .attr = {
4432 .name = "resource_path",
4433 .mode = S_IRUGO,
4434 },
4435 .show = ipr_show_resource_path
4436 };
4437
4438 /**
4439 * ipr_show_device_id - Show the device_id for this device.
4440 * @dev: device struct
4441 * @attr: device attribute structure
4442 * @buf: buffer
4443 *
4444 * Return value:
4445 * number of bytes printed to buffer
4446 **/
4447 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4448 {
4449 struct scsi_device *sdev = to_scsi_device(dev);
4450 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4451 struct ipr_resource_entry *res;
4452 unsigned long lock_flags = 0;
4453 ssize_t len = -ENXIO;
4454
4455 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4456 res = (struct ipr_resource_entry *)sdev->hostdata;
4457 if (res && ioa_cfg->sis64)
4458 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4459 else if (res)
4460 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4461
4462 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4463 return len;
4464 }
4465
4466 static struct device_attribute ipr_device_id_attr = {
4467 .attr = {
4468 .name = "device_id",
4469 .mode = S_IRUGO,
4470 },
4471 .show = ipr_show_device_id
4472 };
4473
4474 /**
4475 * ipr_show_resource_type - Show the resource type for this device.
4476 * @dev: device struct
4477 * @attr: device attribute structure
4478 * @buf: buffer
4479 *
4480 * Return value:
4481 * number of bytes printed to buffer
4482 **/
4483 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4484 {
4485 struct scsi_device *sdev = to_scsi_device(dev);
4486 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4487 struct ipr_resource_entry *res;
4488 unsigned long lock_flags = 0;
4489 ssize_t len = -ENXIO;
4490
4491 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4492 res = (struct ipr_resource_entry *)sdev->hostdata;
4493
4494 if (res)
4495 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4496
4497 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4498 return len;
4499 }
4500
4501 static struct device_attribute ipr_resource_type_attr = {
4502 .attr = {
4503 .name = "resource_type",
4504 .mode = S_IRUGO,
4505 },
4506 .show = ipr_show_resource_type
4507 };
4508
4509 /**
4510 * ipr_show_raw_mode - Show the adapter's raw mode
4511 * @dev: class device struct
4512 * @buf: buffer
4513 *
4514 * Return value:
4515 * number of bytes printed to buffer
4516 **/
4517 static ssize_t ipr_show_raw_mode(struct device *dev,
4518 struct device_attribute *attr, char *buf)
4519 {
4520 struct scsi_device *sdev = to_scsi_device(dev);
4521 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4522 struct ipr_resource_entry *res;
4523 unsigned long lock_flags = 0;
4524 ssize_t len;
4525
4526 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4527 res = (struct ipr_resource_entry *)sdev->hostdata;
4528 if (res)
4529 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4530 else
4531 len = -ENXIO;
4532 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4533 return len;
4534 }
4535
4536 /**
4537 * ipr_store_raw_mode - Change the adapter's raw mode
4538 * @dev: class device struct
4539 * @buf: buffer
4540 *
4541 * Return value:
4542 * number of bytes printed to buffer
4543 **/
4544 static ssize_t ipr_store_raw_mode(struct device *dev,
4545 struct device_attribute *attr,
4546 const char *buf, size_t count)
4547 {
4548 struct scsi_device *sdev = to_scsi_device(dev);
4549 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4550 struct ipr_resource_entry *res;
4551 unsigned long lock_flags = 0;
4552 ssize_t len;
4553
4554 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4555 res = (struct ipr_resource_entry *)sdev->hostdata;
4556 if (res) {
4557 if (ipr_is_af_dasd_device(res)) {
4558 res->raw_mode = simple_strtoul(buf, NULL, 10);
4559 len = strlen(buf);
4560 if (res->sdev)
4561 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4562 res->raw_mode ? "enabled" : "disabled");
4563 } else
4564 len = -EINVAL;
4565 } else
4566 len = -ENXIO;
4567 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4568 return len;
4569 }
4570
4571 static struct device_attribute ipr_raw_mode_attr = {
4572 .attr = {
4573 .name = "raw_mode",
4574 .mode = S_IRUGO | S_IWUSR,
4575 },
4576 .show = ipr_show_raw_mode,
4577 .store = ipr_store_raw_mode
4578 };
4579
4580 static struct device_attribute *ipr_dev_attrs[] = {
4581 &ipr_adapter_handle_attr,
4582 &ipr_resource_path_attr,
4583 &ipr_device_id_attr,
4584 &ipr_resource_type_attr,
4585 &ipr_raw_mode_attr,
4586 NULL,
4587 };
4588
4589 /**
4590 * ipr_biosparam - Return the HSC mapping
4591 * @sdev: scsi device struct
4592 * @block_device: block device pointer
4593 * @capacity: capacity of the device
4594 * @parm: Array containing returned HSC values.
4595 *
4596 * This function generates the HSC parms that fdisk uses.
4597 * We want to make sure we return something that places partitions
4598 * on 4k boundaries for best performance with the IOA.
4599 *
4600 * Return value:
4601 * 0 on success
4602 **/
4603 static int ipr_biosparam(struct scsi_device *sdev,
4604 struct block_device *block_device,
4605 sector_t capacity, int *parm)
4606 {
4607 int heads, sectors;
4608 sector_t cylinders;
4609
4610 heads = 128;
4611 sectors = 32;
4612
4613 cylinders = capacity;
4614 sector_div(cylinders, (128 * 32));
4615
4616 /* return result */
4617 parm[0] = heads;
4618 parm[1] = sectors;
4619 parm[2] = cylinders;
4620
4621 return 0;
4622 }
4623
4624 /**
4625 * ipr_find_starget - Find target based on bus/target.
4626 * @starget: scsi target struct
4627 *
4628 * Return value:
4629 * resource entry pointer if found / NULL if not found
4630 **/
4631 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4632 {
4633 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4634 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4635 struct ipr_resource_entry *res;
4636
4637 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4638 if ((res->bus == starget->channel) &&
4639 (res->target == starget->id)) {
4640 return res;
4641 }
4642 }
4643
4644 return NULL;
4645 }
4646
4647 static struct ata_port_info sata_port_info;
4648
4649 /**
4650 * ipr_target_alloc - Prepare for commands to a SCSI target
4651 * @starget: scsi target struct
4652 *
4653 * If the device is a SATA device, this function allocates an
4654 * ATA port with libata, else it does nothing.
4655 *
4656 * Return value:
4657 * 0 on success / non-0 on failure
4658 **/
4659 static int ipr_target_alloc(struct scsi_target *starget)
4660 {
4661 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4662 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4663 struct ipr_sata_port *sata_port;
4664 struct ata_port *ap;
4665 struct ipr_resource_entry *res;
4666 unsigned long lock_flags;
4667
4668 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4669 res = ipr_find_starget(starget);
4670 starget->hostdata = NULL;
4671
4672 if (res && ipr_is_gata(res)) {
4673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4674 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4675 if (!sata_port)
4676 return -ENOMEM;
4677
4678 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4679 if (ap) {
4680 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4681 sata_port->ioa_cfg = ioa_cfg;
4682 sata_port->ap = ap;
4683 sata_port->res = res;
4684
4685 res->sata_port = sata_port;
4686 ap->private_data = sata_port;
4687 starget->hostdata = sata_port;
4688 } else {
4689 kfree(sata_port);
4690 return -ENOMEM;
4691 }
4692 }
4693 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4694
4695 return 0;
4696 }
4697
4698 /**
4699 * ipr_target_destroy - Destroy a SCSI target
4700 * @starget: scsi target struct
4701 *
4702 * If the device was a SATA device, this function frees the libata
4703 * ATA port, else it does nothing.
4704 *
4705 **/
4706 static void ipr_target_destroy(struct scsi_target *starget)
4707 {
4708 struct ipr_sata_port *sata_port = starget->hostdata;
4709 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4710 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4711
4712 if (ioa_cfg->sis64) {
4713 if (!ipr_find_starget(starget)) {
4714 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4715 clear_bit(starget->id, ioa_cfg->array_ids);
4716 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4717 clear_bit(starget->id, ioa_cfg->vset_ids);
4718 else if (starget->channel == 0)
4719 clear_bit(starget->id, ioa_cfg->target_ids);
4720 }
4721 }
4722
4723 if (sata_port) {
4724 starget->hostdata = NULL;
4725 ata_sas_port_destroy(sata_port->ap);
4726 kfree(sata_port);
4727 }
4728 }
4729
4730 /**
4731 * ipr_find_sdev - Find device based on bus/target/lun.
4732 * @sdev: scsi device struct
4733 *
4734 * Return value:
4735 * resource entry pointer if found / NULL if not found
4736 **/
4737 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4738 {
4739 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4740 struct ipr_resource_entry *res;
4741
4742 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4743 if ((res->bus == sdev->channel) &&
4744 (res->target == sdev->id) &&
4745 (res->lun == sdev->lun))
4746 return res;
4747 }
4748
4749 return NULL;
4750 }
4751
4752 /**
4753 * ipr_slave_destroy - Unconfigure a SCSI device
4754 * @sdev: scsi device struct
4755 *
4756 * Return value:
4757 * nothing
4758 **/
4759 static void ipr_slave_destroy(struct scsi_device *sdev)
4760 {
4761 struct ipr_resource_entry *res;
4762 struct ipr_ioa_cfg *ioa_cfg;
4763 unsigned long lock_flags = 0;
4764
4765 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4766
4767 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4768 res = (struct ipr_resource_entry *) sdev->hostdata;
4769 if (res) {
4770 if (res->sata_port)
4771 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4772 sdev->hostdata = NULL;
4773 res->sdev = NULL;
4774 res->sata_port = NULL;
4775 }
4776 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4777 }
4778
4779 /**
4780 * ipr_slave_configure - Configure a SCSI device
4781 * @sdev: scsi device struct
4782 *
4783 * This function configures the specified scsi device.
4784 *
4785 * Return value:
4786 * 0 on success
4787 **/
4788 static int ipr_slave_configure(struct scsi_device *sdev)
4789 {
4790 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4791 struct ipr_resource_entry *res;
4792 struct ata_port *ap = NULL;
4793 unsigned long lock_flags = 0;
4794 char buffer[IPR_MAX_RES_PATH_LENGTH];
4795
4796 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4797 res = sdev->hostdata;
4798 if (res) {
4799 if (ipr_is_af_dasd_device(res))
4800 sdev->type = TYPE_RAID;
4801 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4802 sdev->scsi_level = 4;
4803 sdev->no_uld_attach = 1;
4804 }
4805 if (ipr_is_vset_device(res)) {
4806 sdev->scsi_level = SCSI_SPC_3;
4807 blk_queue_rq_timeout(sdev->request_queue,
4808 IPR_VSET_RW_TIMEOUT);
4809 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4810 }
4811 if (ipr_is_gata(res) && res->sata_port)
4812 ap = res->sata_port->ap;
4813 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4814
4815 if (ap) {
4816 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4817 ata_sas_slave_configure(sdev, ap);
4818 }
4819
4820 if (ioa_cfg->sis64)
4821 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4822 ipr_format_res_path(ioa_cfg,
4823 res->res_path, buffer, sizeof(buffer)));
4824 return 0;
4825 }
4826 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4827 return 0;
4828 }
4829
4830 /**
4831 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4832 * @sdev: scsi device struct
4833 *
4834 * This function initializes an ATA port so that future commands
4835 * sent through queuecommand will work.
4836 *
4837 * Return value:
4838 * 0 on success
4839 **/
4840 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4841 {
4842 struct ipr_sata_port *sata_port = NULL;
4843 int rc = -ENXIO;
4844
4845 ENTER;
4846 if (sdev->sdev_target)
4847 sata_port = sdev->sdev_target->hostdata;
4848 if (sata_port) {
4849 rc = ata_sas_port_init(sata_port->ap);
4850 if (rc == 0)
4851 rc = ata_sas_sync_probe(sata_port->ap);
4852 }
4853
4854 if (rc)
4855 ipr_slave_destroy(sdev);
4856
4857 LEAVE;
4858 return rc;
4859 }
4860
4861 /**
4862 * ipr_slave_alloc - Prepare for commands to a device.
4863 * @sdev: scsi device struct
4864 *
4865 * This function saves a pointer to the resource entry
4866 * in the scsi device struct if the device exists. We
4867 * can then use this pointer in ipr_queuecommand when
4868 * handling new commands.
4869 *
4870 * Return value:
4871 * 0 on success / -ENXIO if device does not exist
4872 **/
4873 static int ipr_slave_alloc(struct scsi_device *sdev)
4874 {
4875 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4876 struct ipr_resource_entry *res;
4877 unsigned long lock_flags;
4878 int rc = -ENXIO;
4879
4880 sdev->hostdata = NULL;
4881
4882 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4883
4884 res = ipr_find_sdev(sdev);
4885 if (res) {
4886 res->sdev = sdev;
4887 res->add_to_ml = 0;
4888 res->in_erp = 0;
4889 sdev->hostdata = res;
4890 if (!ipr_is_naca_model(res))
4891 res->needs_sync_complete = 1;
4892 rc = 0;
4893 if (ipr_is_gata(res)) {
4894 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4895 return ipr_ata_slave_alloc(sdev);
4896 }
4897 }
4898
4899 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4900
4901 return rc;
4902 }
4903
4904 /**
4905 * ipr_match_lun - Match function for specified LUN
4906 * @ipr_cmd: ipr command struct
4907 * @device: device to match (sdev)
4908 *
4909 * Returns:
4910 * 1 if command matches sdev / 0 if command does not match sdev
4911 **/
4912 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
4913 {
4914 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
4915 return 1;
4916 return 0;
4917 }
4918
4919 /**
4920 * ipr_wait_for_ops - Wait for matching commands to complete
4921 * @ipr_cmd: ipr command struct
4922 * @device: device to match (sdev)
4923 * @match: match function to use
4924 *
4925 * Returns:
4926 * SUCCESS / FAILED
4927 **/
4928 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
4929 int (*match)(struct ipr_cmnd *, void *))
4930 {
4931 struct ipr_cmnd *ipr_cmd;
4932 int wait;
4933 unsigned long flags;
4934 struct ipr_hrr_queue *hrrq;
4935 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
4936 DECLARE_COMPLETION_ONSTACK(comp);
4937
4938 ENTER;
4939 do {
4940 wait = 0;
4941
4942 for_each_hrrq(hrrq, ioa_cfg) {
4943 spin_lock_irqsave(hrrq->lock, flags);
4944 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4945 if (match(ipr_cmd, device)) {
4946 ipr_cmd->eh_comp = &comp;
4947 wait++;
4948 }
4949 }
4950 spin_unlock_irqrestore(hrrq->lock, flags);
4951 }
4952
4953 if (wait) {
4954 timeout = wait_for_completion_timeout(&comp, timeout);
4955
4956 if (!timeout) {
4957 wait = 0;
4958
4959 for_each_hrrq(hrrq, ioa_cfg) {
4960 spin_lock_irqsave(hrrq->lock, flags);
4961 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4962 if (match(ipr_cmd, device)) {
4963 ipr_cmd->eh_comp = NULL;
4964 wait++;
4965 }
4966 }
4967 spin_unlock_irqrestore(hrrq->lock, flags);
4968 }
4969
4970 if (wait)
4971 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
4972 LEAVE;
4973 return wait ? FAILED : SUCCESS;
4974 }
4975 }
4976 } while (wait);
4977
4978 LEAVE;
4979 return SUCCESS;
4980 }
4981
4982 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4983 {
4984 struct ipr_ioa_cfg *ioa_cfg;
4985 unsigned long lock_flags = 0;
4986 int rc = SUCCESS;
4987
4988 ENTER;
4989 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4990 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4991
4992 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4993 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4994 dev_err(&ioa_cfg->pdev->dev,
4995 "Adapter being reset as a result of error recovery.\n");
4996
4997 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4998 ioa_cfg->sdt_state = GET_DUMP;
4999 }
5000
5001 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5002 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5003 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5004
5005 /* If we got hit with a host reset while we were already resetting
5006 the adapter for some reason, and the reset failed. */
5007 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5008 ipr_trace;
5009 rc = FAILED;
5010 }
5011
5012 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5013 LEAVE;
5014 return rc;
5015 }
5016
5017 /**
5018 * ipr_device_reset - Reset the device
5019 * @ioa_cfg: ioa config struct
5020 * @res: resource entry struct
5021 *
5022 * This function issues a device reset to the affected device.
5023 * If the device is a SCSI device, a LUN reset will be sent
5024 * to the device first. If that does not work, a target reset
5025 * will be sent. If the device is a SATA device, a PHY reset will
5026 * be sent.
5027 *
5028 * Return value:
5029 * 0 on success / non-zero on failure
5030 **/
5031 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5032 struct ipr_resource_entry *res)
5033 {
5034 struct ipr_cmnd *ipr_cmd;
5035 struct ipr_ioarcb *ioarcb;
5036 struct ipr_cmd_pkt *cmd_pkt;
5037 struct ipr_ioarcb_ata_regs *regs;
5038 u32 ioasc;
5039
5040 ENTER;
5041 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5042 ioarcb = &ipr_cmd->ioarcb;
5043 cmd_pkt = &ioarcb->cmd_pkt;
5044
5045 if (ipr_cmd->ioa_cfg->sis64) {
5046 regs = &ipr_cmd->i.ata_ioadl.regs;
5047 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5048 } else
5049 regs = &ioarcb->u.add_data.u.regs;
5050
5051 ioarcb->res_handle = res->res_handle;
5052 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5053 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5054 if (ipr_is_gata(res)) {
5055 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5056 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5057 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5058 }
5059
5060 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5061 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5062 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5063 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5064 if (ipr_cmd->ioa_cfg->sis64)
5065 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5066 sizeof(struct ipr_ioasa_gata));
5067 else
5068 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5069 sizeof(struct ipr_ioasa_gata));
5070 }
5071
5072 LEAVE;
5073 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5074 }
5075
5076 /**
5077 * ipr_sata_reset - Reset the SATA port
5078 * @link: SATA link to reset
5079 * @classes: class of the attached device
5080 *
5081 * This function issues a SATA phy reset to the affected ATA link.
5082 *
5083 * Return value:
5084 * 0 on success / non-zero on failure
5085 **/
5086 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5087 unsigned long deadline)
5088 {
5089 struct ipr_sata_port *sata_port = link->ap->private_data;
5090 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5091 struct ipr_resource_entry *res;
5092 unsigned long lock_flags = 0;
5093 int rc = -ENXIO;
5094
5095 ENTER;
5096 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5097 while (ioa_cfg->in_reset_reload) {
5098 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5099 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5100 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5101 }
5102
5103 res = sata_port->res;
5104 if (res) {
5105 rc = ipr_device_reset(ioa_cfg, res);
5106 *classes = res->ata_class;
5107 }
5108
5109 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5110 LEAVE;
5111 return rc;
5112 }
5113
5114 /**
5115 * ipr_eh_dev_reset - Reset the device
5116 * @scsi_cmd: scsi command struct
5117 *
5118 * This function issues a device reset to the affected device.
5119 * A LUN reset will be sent to the device first. If that does
5120 * not work, a target reset will be sent.
5121 *
5122 * Return value:
5123 * SUCCESS / FAILED
5124 **/
5125 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5126 {
5127 struct ipr_cmnd *ipr_cmd;
5128 struct ipr_ioa_cfg *ioa_cfg;
5129 struct ipr_resource_entry *res;
5130 struct ata_port *ap;
5131 int rc = 0;
5132 struct ipr_hrr_queue *hrrq;
5133
5134 ENTER;
5135 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5136 res = scsi_cmd->device->hostdata;
5137
5138 if (!res)
5139 return FAILED;
5140
5141 /*
5142 * If we are currently going through reset/reload, return failed. This will force the
5143 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5144 * reset to complete
5145 */
5146 if (ioa_cfg->in_reset_reload)
5147 return FAILED;
5148 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5149 return FAILED;
5150
5151 for_each_hrrq(hrrq, ioa_cfg) {
5152 spin_lock(&hrrq->_lock);
5153 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5154 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5155 if (ipr_cmd->scsi_cmd)
5156 ipr_cmd->done = ipr_scsi_eh_done;
5157 if (ipr_cmd->qc)
5158 ipr_cmd->done = ipr_sata_eh_done;
5159 if (ipr_cmd->qc &&
5160 !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5161 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5162 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5163 }
5164 }
5165 }
5166 spin_unlock(&hrrq->_lock);
5167 }
5168 res->resetting_device = 1;
5169 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5170
5171 if (ipr_is_gata(res) && res->sata_port) {
5172 ap = res->sata_port->ap;
5173 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5174 ata_std_error_handler(ap);
5175 spin_lock_irq(scsi_cmd->device->host->host_lock);
5176
5177 for_each_hrrq(hrrq, ioa_cfg) {
5178 spin_lock(&hrrq->_lock);
5179 list_for_each_entry(ipr_cmd,
5180 &hrrq->hrrq_pending_q, queue) {
5181 if (ipr_cmd->ioarcb.res_handle ==
5182 res->res_handle) {
5183 rc = -EIO;
5184 break;
5185 }
5186 }
5187 spin_unlock(&hrrq->_lock);
5188 }
5189 } else
5190 rc = ipr_device_reset(ioa_cfg, res);
5191 res->resetting_device = 0;
5192 res->reset_occurred = 1;
5193
5194 LEAVE;
5195 return rc ? FAILED : SUCCESS;
5196 }
5197
5198 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5199 {
5200 int rc;
5201 struct ipr_ioa_cfg *ioa_cfg;
5202
5203 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5204
5205 spin_lock_irq(cmd->device->host->host_lock);
5206 rc = __ipr_eh_dev_reset(cmd);
5207 spin_unlock_irq(cmd->device->host->host_lock);
5208
5209 if (rc == SUCCESS)
5210 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5211
5212 return rc;
5213 }
5214
5215 /**
5216 * ipr_bus_reset_done - Op done function for bus reset.
5217 * @ipr_cmd: ipr command struct
5218 *
5219 * This function is the op done function for a bus reset
5220 *
5221 * Return value:
5222 * none
5223 **/
5224 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5225 {
5226 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5227 struct ipr_resource_entry *res;
5228
5229 ENTER;
5230 if (!ioa_cfg->sis64)
5231 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5232 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5233 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5234 break;
5235 }
5236 }
5237
5238 /*
5239 * If abort has not completed, indicate the reset has, else call the
5240 * abort's done function to wake the sleeping eh thread
5241 */
5242 if (ipr_cmd->sibling->sibling)
5243 ipr_cmd->sibling->sibling = NULL;
5244 else
5245 ipr_cmd->sibling->done(ipr_cmd->sibling);
5246
5247 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5248 LEAVE;
5249 }
5250
5251 /**
5252 * ipr_abort_timeout - An abort task has timed out
5253 * @ipr_cmd: ipr command struct
5254 *
5255 * This function handles when an abort task times out. If this
5256 * happens we issue a bus reset since we have resources tied
5257 * up that must be freed before returning to the midlayer.
5258 *
5259 * Return value:
5260 * none
5261 **/
5262 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5263 {
5264 struct ipr_cmnd *reset_cmd;
5265 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5266 struct ipr_cmd_pkt *cmd_pkt;
5267 unsigned long lock_flags = 0;
5268
5269 ENTER;
5270 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5271 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5272 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5273 return;
5274 }
5275
5276 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5277 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5278 ipr_cmd->sibling = reset_cmd;
5279 reset_cmd->sibling = ipr_cmd;
5280 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5281 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5282 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5283 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5284 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5285
5286 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5287 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5288 LEAVE;
5289 }
5290
5291 /**
5292 * ipr_cancel_op - Cancel specified op
5293 * @scsi_cmd: scsi command struct
5294 *
5295 * This function cancels specified op.
5296 *
5297 * Return value:
5298 * SUCCESS / FAILED
5299 **/
5300 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5301 {
5302 struct ipr_cmnd *ipr_cmd;
5303 struct ipr_ioa_cfg *ioa_cfg;
5304 struct ipr_resource_entry *res;
5305 struct ipr_cmd_pkt *cmd_pkt;
5306 u32 ioasc, int_reg;
5307 int op_found = 0;
5308 struct ipr_hrr_queue *hrrq;
5309
5310 ENTER;
5311 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5312 res = scsi_cmd->device->hostdata;
5313
5314 /* If we are currently going through reset/reload, return failed.
5315 * This will force the mid-layer to call ipr_eh_host_reset,
5316 * which will then go to sleep and wait for the reset to complete
5317 */
5318 if (ioa_cfg->in_reset_reload ||
5319 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5320 return FAILED;
5321 if (!res)
5322 return FAILED;
5323
5324 /*
5325 * If we are aborting a timed out op, chances are that the timeout was caused
5326 * by a still not detected EEH error. In such cases, reading a register will
5327 * trigger the EEH recovery infrastructure.
5328 */
5329 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5330
5331 if (!ipr_is_gscsi(res))
5332 return FAILED;
5333
5334 for_each_hrrq(hrrq, ioa_cfg) {
5335 spin_lock(&hrrq->_lock);
5336 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5337 if (ipr_cmd->scsi_cmd == scsi_cmd) {
5338 ipr_cmd->done = ipr_scsi_eh_done;
5339 op_found = 1;
5340 break;
5341 }
5342 }
5343 spin_unlock(&hrrq->_lock);
5344 }
5345
5346 if (!op_found)
5347 return SUCCESS;
5348
5349 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5350 ipr_cmd->ioarcb.res_handle = res->res_handle;
5351 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5352 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5353 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5354 ipr_cmd->u.sdev = scsi_cmd->device;
5355
5356 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5357 scsi_cmd->cmnd[0]);
5358 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5359 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5360
5361 /*
5362 * If the abort task timed out and we sent a bus reset, we will get
5363 * one the following responses to the abort
5364 */
5365 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5366 ioasc = 0;
5367 ipr_trace;
5368 }
5369
5370 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5371 if (!ipr_is_naca_model(res))
5372 res->needs_sync_complete = 1;
5373
5374 LEAVE;
5375 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5376 }
5377
5378 /**
5379 * ipr_eh_abort - Abort a single op
5380 * @scsi_cmd: scsi command struct
5381 *
5382 * Return value:
5383 * 0 if scan in progress / 1 if scan is complete
5384 **/
5385 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5386 {
5387 unsigned long lock_flags;
5388 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5389 int rc = 0;
5390
5391 spin_lock_irqsave(shost->host_lock, lock_flags);
5392 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5393 rc = 1;
5394 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5395 rc = 1;
5396 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5397 return rc;
5398 }
5399
5400 /**
5401 * ipr_eh_host_reset - Reset the host adapter
5402 * @scsi_cmd: scsi command struct
5403 *
5404 * Return value:
5405 * SUCCESS / FAILED
5406 **/
5407 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5408 {
5409 unsigned long flags;
5410 int rc;
5411 struct ipr_ioa_cfg *ioa_cfg;
5412
5413 ENTER;
5414
5415 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5416
5417 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5418 rc = ipr_cancel_op(scsi_cmd);
5419 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5420
5421 if (rc == SUCCESS)
5422 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5423 LEAVE;
5424 return rc;
5425 }
5426
5427 /**
5428 * ipr_handle_other_interrupt - Handle "other" interrupts
5429 * @ioa_cfg: ioa config struct
5430 * @int_reg: interrupt register
5431 *
5432 * Return value:
5433 * IRQ_NONE / IRQ_HANDLED
5434 **/
5435 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5436 u32 int_reg)
5437 {
5438 irqreturn_t rc = IRQ_HANDLED;
5439 u32 int_mask_reg;
5440
5441 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5442 int_reg &= ~int_mask_reg;
5443
5444 /* If an interrupt on the adapter did not occur, ignore it.
5445 * Or in the case of SIS 64, check for a stage change interrupt.
5446 */
5447 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5448 if (ioa_cfg->sis64) {
5449 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5450 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5451 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5452
5453 /* clear stage change */
5454 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5455 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5456 list_del(&ioa_cfg->reset_cmd->queue);
5457 del_timer(&ioa_cfg->reset_cmd->timer);
5458 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5459 return IRQ_HANDLED;
5460 }
5461 }
5462
5463 return IRQ_NONE;
5464 }
5465
5466 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5467 /* Mask the interrupt */
5468 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5469 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5470
5471 list_del(&ioa_cfg->reset_cmd->queue);
5472 del_timer(&ioa_cfg->reset_cmd->timer);
5473 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5474 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5475 if (ioa_cfg->clear_isr) {
5476 if (ipr_debug && printk_ratelimit())
5477 dev_err(&ioa_cfg->pdev->dev,
5478 "Spurious interrupt detected. 0x%08X\n", int_reg);
5479 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5480 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5481 return IRQ_NONE;
5482 }
5483 } else {
5484 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5485 ioa_cfg->ioa_unit_checked = 1;
5486 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5487 dev_err(&ioa_cfg->pdev->dev,
5488 "No Host RRQ. 0x%08X\n", int_reg);
5489 else
5490 dev_err(&ioa_cfg->pdev->dev,
5491 "Permanent IOA failure. 0x%08X\n", int_reg);
5492
5493 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5494 ioa_cfg->sdt_state = GET_DUMP;
5495
5496 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5497 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5498 }
5499
5500 return rc;
5501 }
5502
5503 /**
5504 * ipr_isr_eh - Interrupt service routine error handler
5505 * @ioa_cfg: ioa config struct
5506 * @msg: message to log
5507 *
5508 * Return value:
5509 * none
5510 **/
5511 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5512 {
5513 ioa_cfg->errors_logged++;
5514 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5515
5516 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5517 ioa_cfg->sdt_state = GET_DUMP;
5518
5519 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5520 }
5521
5522 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5523 struct list_head *doneq)
5524 {
5525 u32 ioasc;
5526 u16 cmd_index;
5527 struct ipr_cmnd *ipr_cmd;
5528 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5529 int num_hrrq = 0;
5530
5531 /* If interrupts are disabled, ignore the interrupt */
5532 if (!hrr_queue->allow_interrupts)
5533 return 0;
5534
5535 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5536 hrr_queue->toggle_bit) {
5537
5538 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5539 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5540 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5541
5542 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5543 cmd_index < hrr_queue->min_cmd_id)) {
5544 ipr_isr_eh(ioa_cfg,
5545 "Invalid response handle from IOA: ",
5546 cmd_index);
5547 break;
5548 }
5549
5550 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5551 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5552
5553 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5554
5555 list_move_tail(&ipr_cmd->queue, doneq);
5556
5557 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5558 hrr_queue->hrrq_curr++;
5559 } else {
5560 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5561 hrr_queue->toggle_bit ^= 1u;
5562 }
5563 num_hrrq++;
5564 if (budget > 0 && num_hrrq >= budget)
5565 break;
5566 }
5567
5568 return num_hrrq;
5569 }
5570
5571 static int ipr_iopoll(struct irq_poll *iop, int budget)
5572 {
5573 struct ipr_ioa_cfg *ioa_cfg;
5574 struct ipr_hrr_queue *hrrq;
5575 struct ipr_cmnd *ipr_cmd, *temp;
5576 unsigned long hrrq_flags;
5577 int completed_ops;
5578 LIST_HEAD(doneq);
5579
5580 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5581 ioa_cfg = hrrq->ioa_cfg;
5582
5583 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5584 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5585
5586 if (completed_ops < budget)
5587 irq_poll_complete(iop);
5588 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5589
5590 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5591 list_del(&ipr_cmd->queue);
5592 del_timer(&ipr_cmd->timer);
5593 ipr_cmd->fast_done(ipr_cmd);
5594 }
5595
5596 return completed_ops;
5597 }
5598
5599 /**
5600 * ipr_isr - Interrupt service routine
5601 * @irq: irq number
5602 * @devp: pointer to ioa config struct
5603 *
5604 * Return value:
5605 * IRQ_NONE / IRQ_HANDLED
5606 **/
5607 static irqreturn_t ipr_isr(int irq, void *devp)
5608 {
5609 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5610 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5611 unsigned long hrrq_flags = 0;
5612 u32 int_reg = 0;
5613 int num_hrrq = 0;
5614 int irq_none = 0;
5615 struct ipr_cmnd *ipr_cmd, *temp;
5616 irqreturn_t rc = IRQ_NONE;
5617 LIST_HEAD(doneq);
5618
5619 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5620 /* If interrupts are disabled, ignore the interrupt */
5621 if (!hrrq->allow_interrupts) {
5622 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5623 return IRQ_NONE;
5624 }
5625
5626 while (1) {
5627 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5628 rc = IRQ_HANDLED;
5629
5630 if (!ioa_cfg->clear_isr)
5631 break;
5632
5633 /* Clear the PCI interrupt */
5634 num_hrrq = 0;
5635 do {
5636 writel(IPR_PCII_HRRQ_UPDATED,
5637 ioa_cfg->regs.clr_interrupt_reg32);
5638 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5639 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5640 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5641
5642 } else if (rc == IRQ_NONE && irq_none == 0) {
5643 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5644 irq_none++;
5645 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5646 int_reg & IPR_PCII_HRRQ_UPDATED) {
5647 ipr_isr_eh(ioa_cfg,
5648 "Error clearing HRRQ: ", num_hrrq);
5649 rc = IRQ_HANDLED;
5650 break;
5651 } else
5652 break;
5653 }
5654
5655 if (unlikely(rc == IRQ_NONE))
5656 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5657
5658 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5659 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5660 list_del(&ipr_cmd->queue);
5661 del_timer(&ipr_cmd->timer);
5662 ipr_cmd->fast_done(ipr_cmd);
5663 }
5664 return rc;
5665 }
5666
5667 /**
5668 * ipr_isr_mhrrq - Interrupt service routine
5669 * @irq: irq number
5670 * @devp: pointer to ioa config struct
5671 *
5672 * Return value:
5673 * IRQ_NONE / IRQ_HANDLED
5674 **/
5675 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5676 {
5677 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5678 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5679 unsigned long hrrq_flags = 0;
5680 struct ipr_cmnd *ipr_cmd, *temp;
5681 irqreturn_t rc = IRQ_NONE;
5682 LIST_HEAD(doneq);
5683
5684 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5685
5686 /* If interrupts are disabled, ignore the interrupt */
5687 if (!hrrq->allow_interrupts) {
5688 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5689 return IRQ_NONE;
5690 }
5691
5692 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5693 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5694 hrrq->toggle_bit) {
5695 irq_poll_sched(&hrrq->iopoll);
5696 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5697 return IRQ_HANDLED;
5698 }
5699 } else {
5700 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5701 hrrq->toggle_bit)
5702
5703 if (ipr_process_hrrq(hrrq, -1, &doneq))
5704 rc = IRQ_HANDLED;
5705 }
5706
5707 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5708
5709 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5710 list_del(&ipr_cmd->queue);
5711 del_timer(&ipr_cmd->timer);
5712 ipr_cmd->fast_done(ipr_cmd);
5713 }
5714 return rc;
5715 }
5716
5717 /**
5718 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5719 * @ioa_cfg: ioa config struct
5720 * @ipr_cmd: ipr command struct
5721 *
5722 * Return value:
5723 * 0 on success / -1 on failure
5724 **/
5725 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5726 struct ipr_cmnd *ipr_cmd)
5727 {
5728 int i, nseg;
5729 struct scatterlist *sg;
5730 u32 length;
5731 u32 ioadl_flags = 0;
5732 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5733 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5734 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5735
5736 length = scsi_bufflen(scsi_cmd);
5737 if (!length)
5738 return 0;
5739
5740 nseg = scsi_dma_map(scsi_cmd);
5741 if (nseg < 0) {
5742 if (printk_ratelimit())
5743 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5744 return -1;
5745 }
5746
5747 ipr_cmd->dma_use_sg = nseg;
5748
5749 ioarcb->data_transfer_length = cpu_to_be32(length);
5750 ioarcb->ioadl_len =
5751 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5752
5753 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5754 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5755 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5756 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5757 ioadl_flags = IPR_IOADL_FLAGS_READ;
5758
5759 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5760 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5761 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5762 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5763 }
5764
5765 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5766 return 0;
5767 }
5768
5769 /**
5770 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5771 * @ioa_cfg: ioa config struct
5772 * @ipr_cmd: ipr command struct
5773 *
5774 * Return value:
5775 * 0 on success / -1 on failure
5776 **/
5777 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5778 struct ipr_cmnd *ipr_cmd)
5779 {
5780 int i, nseg;
5781 struct scatterlist *sg;
5782 u32 length;
5783 u32 ioadl_flags = 0;
5784 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5785 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5786 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5787
5788 length = scsi_bufflen(scsi_cmd);
5789 if (!length)
5790 return 0;
5791
5792 nseg = scsi_dma_map(scsi_cmd);
5793 if (nseg < 0) {
5794 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5795 return -1;
5796 }
5797
5798 ipr_cmd->dma_use_sg = nseg;
5799
5800 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5801 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5802 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5803 ioarcb->data_transfer_length = cpu_to_be32(length);
5804 ioarcb->ioadl_len =
5805 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5806 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5807 ioadl_flags = IPR_IOADL_FLAGS_READ;
5808 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5809 ioarcb->read_ioadl_len =
5810 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5811 }
5812
5813 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5814 ioadl = ioarcb->u.add_data.u.ioadl;
5815 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5816 offsetof(struct ipr_ioarcb, u.add_data));
5817 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5818 }
5819
5820 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5821 ioadl[i].flags_and_data_len =
5822 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5823 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5824 }
5825
5826 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5827 return 0;
5828 }
5829
5830 /**
5831 * ipr_erp_done - Process completion of ERP for a device
5832 * @ipr_cmd: ipr command struct
5833 *
5834 * This function copies the sense buffer into the scsi_cmd
5835 * struct and pushes the scsi_done function.
5836 *
5837 * Return value:
5838 * nothing
5839 **/
5840 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5841 {
5842 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5843 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5844 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5845
5846 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5847 scsi_cmd->result |= (DID_ERROR << 16);
5848 scmd_printk(KERN_ERR, scsi_cmd,
5849 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5850 } else {
5851 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5852 SCSI_SENSE_BUFFERSIZE);
5853 }
5854
5855 if (res) {
5856 if (!ipr_is_naca_model(res))
5857 res->needs_sync_complete = 1;
5858 res->in_erp = 0;
5859 }
5860 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5861 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5862 scsi_cmd->scsi_done(scsi_cmd);
5863 }
5864
5865 /**
5866 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5867 * @ipr_cmd: ipr command struct
5868 *
5869 * Return value:
5870 * none
5871 **/
5872 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5873 {
5874 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5875 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5876 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5877
5878 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5879 ioarcb->data_transfer_length = 0;
5880 ioarcb->read_data_transfer_length = 0;
5881 ioarcb->ioadl_len = 0;
5882 ioarcb->read_ioadl_len = 0;
5883 ioasa->hdr.ioasc = 0;
5884 ioasa->hdr.residual_data_len = 0;
5885
5886 if (ipr_cmd->ioa_cfg->sis64)
5887 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5888 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5889 else {
5890 ioarcb->write_ioadl_addr =
5891 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5892 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5893 }
5894 }
5895
5896 /**
5897 * ipr_erp_request_sense - Send request sense to a device
5898 * @ipr_cmd: ipr command struct
5899 *
5900 * This function sends a request sense to a device as a result
5901 * of a check condition.
5902 *
5903 * Return value:
5904 * nothing
5905 **/
5906 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5907 {
5908 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5909 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5910
5911 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5912 ipr_erp_done(ipr_cmd);
5913 return;
5914 }
5915
5916 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5917
5918 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5919 cmd_pkt->cdb[0] = REQUEST_SENSE;
5920 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5921 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5922 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5923 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5924
5925 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5926 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5927
5928 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5929 IPR_REQUEST_SENSE_TIMEOUT * 2);
5930 }
5931
5932 /**
5933 * ipr_erp_cancel_all - Send cancel all to a device
5934 * @ipr_cmd: ipr command struct
5935 *
5936 * This function sends a cancel all to a device to clear the
5937 * queue. If we are running TCQ on the device, QERR is set to 1,
5938 * which means all outstanding ops have been dropped on the floor.
5939 * Cancel all will return them to us.
5940 *
5941 * Return value:
5942 * nothing
5943 **/
5944 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5945 {
5946 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5947 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5948 struct ipr_cmd_pkt *cmd_pkt;
5949
5950 res->in_erp = 1;
5951
5952 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5953
5954 if (!scsi_cmd->device->simple_tags) {
5955 ipr_erp_request_sense(ipr_cmd);
5956 return;
5957 }
5958
5959 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5960 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5961 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5962
5963 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5964 IPR_CANCEL_ALL_TIMEOUT);
5965 }
5966
5967 /**
5968 * ipr_dump_ioasa - Dump contents of IOASA
5969 * @ioa_cfg: ioa config struct
5970 * @ipr_cmd: ipr command struct
5971 * @res: resource entry struct
5972 *
5973 * This function is invoked by the interrupt handler when ops
5974 * fail. It will log the IOASA if appropriate. Only called
5975 * for GPDD ops.
5976 *
5977 * Return value:
5978 * none
5979 **/
5980 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5981 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5982 {
5983 int i;
5984 u16 data_len;
5985 u32 ioasc, fd_ioasc;
5986 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5987 __be32 *ioasa_data = (__be32 *)ioasa;
5988 int error_index;
5989
5990 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5991 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5992
5993 if (0 == ioasc)
5994 return;
5995
5996 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5997 return;
5998
5999 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6000 error_index = ipr_get_error(fd_ioasc);
6001 else
6002 error_index = ipr_get_error(ioasc);
6003
6004 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6005 /* Don't log an error if the IOA already logged one */
6006 if (ioasa->hdr.ilid != 0)
6007 return;
6008
6009 if (!ipr_is_gscsi(res))
6010 return;
6011
6012 if (ipr_error_table[error_index].log_ioasa == 0)
6013 return;
6014 }
6015
6016 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6017
6018 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6019 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6020 data_len = sizeof(struct ipr_ioasa64);
6021 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6022 data_len = sizeof(struct ipr_ioasa);
6023
6024 ipr_err("IOASA Dump:\n");
6025
6026 for (i = 0; i < data_len / 4; i += 4) {
6027 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6028 be32_to_cpu(ioasa_data[i]),
6029 be32_to_cpu(ioasa_data[i+1]),
6030 be32_to_cpu(ioasa_data[i+2]),
6031 be32_to_cpu(ioasa_data[i+3]));
6032 }
6033 }
6034
6035 /**
6036 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6037 * @ioasa: IOASA
6038 * @sense_buf: sense data buffer
6039 *
6040 * Return value:
6041 * none
6042 **/
6043 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6044 {
6045 u32 failing_lba;
6046 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6047 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6048 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6049 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6050
6051 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6052
6053 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6054 return;
6055
6056 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6057
6058 if (ipr_is_vset_device(res) &&
6059 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6060 ioasa->u.vset.failing_lba_hi != 0) {
6061 sense_buf[0] = 0x72;
6062 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6063 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6064 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6065
6066 sense_buf[7] = 12;
6067 sense_buf[8] = 0;
6068 sense_buf[9] = 0x0A;
6069 sense_buf[10] = 0x80;
6070
6071 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6072
6073 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6074 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6075 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6076 sense_buf[15] = failing_lba & 0x000000ff;
6077
6078 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6079
6080 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6081 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6082 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6083 sense_buf[19] = failing_lba & 0x000000ff;
6084 } else {
6085 sense_buf[0] = 0x70;
6086 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6087 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6088 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6089
6090 /* Illegal request */
6091 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6092 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6093 sense_buf[7] = 10; /* additional length */
6094
6095 /* IOARCB was in error */
6096 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6097 sense_buf[15] = 0xC0;
6098 else /* Parameter data was invalid */
6099 sense_buf[15] = 0x80;
6100
6101 sense_buf[16] =
6102 ((IPR_FIELD_POINTER_MASK &
6103 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6104 sense_buf[17] =
6105 (IPR_FIELD_POINTER_MASK &
6106 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6107 } else {
6108 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6109 if (ipr_is_vset_device(res))
6110 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6111 else
6112 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6113
6114 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6115 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6116 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6117 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6118 sense_buf[6] = failing_lba & 0x000000ff;
6119 }
6120
6121 sense_buf[7] = 6; /* additional length */
6122 }
6123 }
6124 }
6125
6126 /**
6127 * ipr_get_autosense - Copy autosense data to sense buffer
6128 * @ipr_cmd: ipr command struct
6129 *
6130 * This function copies the autosense buffer to the buffer
6131 * in the scsi_cmd, if there is autosense available.
6132 *
6133 * Return value:
6134 * 1 if autosense was available / 0 if not
6135 **/
6136 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6137 {
6138 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6139 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6140
6141 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6142 return 0;
6143
6144 if (ipr_cmd->ioa_cfg->sis64)
6145 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6146 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6147 SCSI_SENSE_BUFFERSIZE));
6148 else
6149 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6150 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6151 SCSI_SENSE_BUFFERSIZE));
6152 return 1;
6153 }
6154
6155 /**
6156 * ipr_erp_start - Process an error response for a SCSI op
6157 * @ioa_cfg: ioa config struct
6158 * @ipr_cmd: ipr command struct
6159 *
6160 * This function determines whether or not to initiate ERP
6161 * on the affected device.
6162 *
6163 * Return value:
6164 * nothing
6165 **/
6166 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6167 struct ipr_cmnd *ipr_cmd)
6168 {
6169 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6170 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6171 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6172 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6173
6174 if (!res) {
6175 ipr_scsi_eh_done(ipr_cmd);
6176 return;
6177 }
6178
6179 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6180 ipr_gen_sense(ipr_cmd);
6181
6182 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6183
6184 switch (masked_ioasc) {
6185 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6186 if (ipr_is_naca_model(res))
6187 scsi_cmd->result |= (DID_ABORT << 16);
6188 else
6189 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6190 break;
6191 case IPR_IOASC_IR_RESOURCE_HANDLE:
6192 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6193 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6194 break;
6195 case IPR_IOASC_HW_SEL_TIMEOUT:
6196 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6197 if (!ipr_is_naca_model(res))
6198 res->needs_sync_complete = 1;
6199 break;
6200 case IPR_IOASC_SYNC_REQUIRED:
6201 if (!res->in_erp)
6202 res->needs_sync_complete = 1;
6203 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6204 break;
6205 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6206 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6207 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6208 break;
6209 case IPR_IOASC_BUS_WAS_RESET:
6210 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6211 /*
6212 * Report the bus reset and ask for a retry. The device
6213 * will give CC/UA the next command.
6214 */
6215 if (!res->resetting_device)
6216 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6217 scsi_cmd->result |= (DID_ERROR << 16);
6218 if (!ipr_is_naca_model(res))
6219 res->needs_sync_complete = 1;
6220 break;
6221 case IPR_IOASC_HW_DEV_BUS_STATUS:
6222 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6223 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6224 if (!ipr_get_autosense(ipr_cmd)) {
6225 if (!ipr_is_naca_model(res)) {
6226 ipr_erp_cancel_all(ipr_cmd);
6227 return;
6228 }
6229 }
6230 }
6231 if (!ipr_is_naca_model(res))
6232 res->needs_sync_complete = 1;
6233 break;
6234 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6235 break;
6236 case IPR_IOASC_IR_NON_OPTIMIZED:
6237 if (res->raw_mode) {
6238 res->raw_mode = 0;
6239 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6240 } else
6241 scsi_cmd->result |= (DID_ERROR << 16);
6242 break;
6243 default:
6244 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6245 scsi_cmd->result |= (DID_ERROR << 16);
6246 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6247 res->needs_sync_complete = 1;
6248 break;
6249 }
6250
6251 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6252 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6253 scsi_cmd->scsi_done(scsi_cmd);
6254 }
6255
6256 /**
6257 * ipr_scsi_done - mid-layer done function
6258 * @ipr_cmd: ipr command struct
6259 *
6260 * This function is invoked by the interrupt handler for
6261 * ops generated by the SCSI mid-layer
6262 *
6263 * Return value:
6264 * none
6265 **/
6266 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6267 {
6268 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6269 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6270 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6271 unsigned long lock_flags;
6272
6273 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6274
6275 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6276 scsi_dma_unmap(scsi_cmd);
6277
6278 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6279 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6280 scsi_cmd->scsi_done(scsi_cmd);
6281 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6282 } else {
6283 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6284 spin_lock(&ipr_cmd->hrrq->_lock);
6285 ipr_erp_start(ioa_cfg, ipr_cmd);
6286 spin_unlock(&ipr_cmd->hrrq->_lock);
6287 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6288 }
6289 }
6290
6291 /**
6292 * ipr_queuecommand - Queue a mid-layer request
6293 * @shost: scsi host struct
6294 * @scsi_cmd: scsi command struct
6295 *
6296 * This function queues a request generated by the mid-layer.
6297 *
6298 * Return value:
6299 * 0 on success
6300 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6301 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6302 **/
6303 static int ipr_queuecommand(struct Scsi_Host *shost,
6304 struct scsi_cmnd *scsi_cmd)
6305 {
6306 struct ipr_ioa_cfg *ioa_cfg;
6307 struct ipr_resource_entry *res;
6308 struct ipr_ioarcb *ioarcb;
6309 struct ipr_cmnd *ipr_cmd;
6310 unsigned long hrrq_flags, lock_flags;
6311 int rc;
6312 struct ipr_hrr_queue *hrrq;
6313 int hrrq_id;
6314
6315 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6316
6317 scsi_cmd->result = (DID_OK << 16);
6318 res = scsi_cmd->device->hostdata;
6319
6320 if (ipr_is_gata(res) && res->sata_port) {
6321 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6322 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6323 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6324 return rc;
6325 }
6326
6327 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6328 hrrq = &ioa_cfg->hrrq[hrrq_id];
6329
6330 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6331 /*
6332 * We are currently blocking all devices due to a host reset
6333 * We have told the host to stop giving us new requests, but
6334 * ERP ops don't count. FIXME
6335 */
6336 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6337 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6338 return SCSI_MLQUEUE_HOST_BUSY;
6339 }
6340
6341 /*
6342 * FIXME - Create scsi_set_host_offline interface
6343 * and the ioa_is_dead check can be removed
6344 */
6345 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6346 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6347 goto err_nodev;
6348 }
6349
6350 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6351 if (ipr_cmd == NULL) {
6352 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6353 return SCSI_MLQUEUE_HOST_BUSY;
6354 }
6355 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6356
6357 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6358 ioarcb = &ipr_cmd->ioarcb;
6359
6360 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6361 ipr_cmd->scsi_cmd = scsi_cmd;
6362 ipr_cmd->done = ipr_scsi_eh_done;
6363
6364 if (ipr_is_gscsi(res)) {
6365 if (scsi_cmd->underflow == 0)
6366 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6367
6368 if (res->reset_occurred) {
6369 res->reset_occurred = 0;
6370 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6371 }
6372 }
6373
6374 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6375 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6376
6377 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6378 if (scsi_cmd->flags & SCMD_TAGGED)
6379 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6380 else
6381 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6382 }
6383
6384 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6385 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6386 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6387 }
6388 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6389 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6390
6391 if (scsi_cmd->underflow == 0)
6392 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6393 }
6394
6395 if (ioa_cfg->sis64)
6396 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6397 else
6398 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6399
6400 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6401 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6402 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6403 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6404 if (!rc)
6405 scsi_dma_unmap(scsi_cmd);
6406 return SCSI_MLQUEUE_HOST_BUSY;
6407 }
6408
6409 if (unlikely(hrrq->ioa_is_dead)) {
6410 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6411 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6412 scsi_dma_unmap(scsi_cmd);
6413 goto err_nodev;
6414 }
6415
6416 ioarcb->res_handle = res->res_handle;
6417 if (res->needs_sync_complete) {
6418 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6419 res->needs_sync_complete = 0;
6420 }
6421 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6422 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6423 ipr_send_command(ipr_cmd);
6424 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6425 return 0;
6426
6427 err_nodev:
6428 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6429 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6430 scsi_cmd->result = (DID_NO_CONNECT << 16);
6431 scsi_cmd->scsi_done(scsi_cmd);
6432 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6433 return 0;
6434 }
6435
6436 /**
6437 * ipr_ioctl - IOCTL handler
6438 * @sdev: scsi device struct
6439 * @cmd: IOCTL cmd
6440 * @arg: IOCTL arg
6441 *
6442 * Return value:
6443 * 0 on success / other on failure
6444 **/
6445 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6446 {
6447 struct ipr_resource_entry *res;
6448
6449 res = (struct ipr_resource_entry *)sdev->hostdata;
6450 if (res && ipr_is_gata(res)) {
6451 if (cmd == HDIO_GET_IDENTITY)
6452 return -ENOTTY;
6453 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6454 }
6455
6456 return -EINVAL;
6457 }
6458
6459 /**
6460 * ipr_info - Get information about the card/driver
6461 * @scsi_host: scsi host struct
6462 *
6463 * Return value:
6464 * pointer to buffer with description string
6465 **/
6466 static const char *ipr_ioa_info(struct Scsi_Host *host)
6467 {
6468 static char buffer[512];
6469 struct ipr_ioa_cfg *ioa_cfg;
6470 unsigned long lock_flags = 0;
6471
6472 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6473
6474 spin_lock_irqsave(host->host_lock, lock_flags);
6475 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6476 spin_unlock_irqrestore(host->host_lock, lock_flags);
6477
6478 return buffer;
6479 }
6480
6481 static struct scsi_host_template driver_template = {
6482 .module = THIS_MODULE,
6483 .name = "IPR",
6484 .info = ipr_ioa_info,
6485 .ioctl = ipr_ioctl,
6486 .queuecommand = ipr_queuecommand,
6487 .eh_abort_handler = ipr_eh_abort,
6488 .eh_device_reset_handler = ipr_eh_dev_reset,
6489 .eh_host_reset_handler = ipr_eh_host_reset,
6490 .slave_alloc = ipr_slave_alloc,
6491 .slave_configure = ipr_slave_configure,
6492 .slave_destroy = ipr_slave_destroy,
6493 .scan_finished = ipr_scan_finished,
6494 .target_alloc = ipr_target_alloc,
6495 .target_destroy = ipr_target_destroy,
6496 .change_queue_depth = ipr_change_queue_depth,
6497 .bios_param = ipr_biosparam,
6498 .can_queue = IPR_MAX_COMMANDS,
6499 .this_id = -1,
6500 .sg_tablesize = IPR_MAX_SGLIST,
6501 .max_sectors = IPR_IOA_MAX_SECTORS,
6502 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6503 .use_clustering = ENABLE_CLUSTERING,
6504 .shost_attrs = ipr_ioa_attrs,
6505 .sdev_attrs = ipr_dev_attrs,
6506 .proc_name = IPR_NAME,
6507 };
6508
6509 /**
6510 * ipr_ata_phy_reset - libata phy_reset handler
6511 * @ap: ata port to reset
6512 *
6513 **/
6514 static void ipr_ata_phy_reset(struct ata_port *ap)
6515 {
6516 unsigned long flags;
6517 struct ipr_sata_port *sata_port = ap->private_data;
6518 struct ipr_resource_entry *res = sata_port->res;
6519 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6520 int rc;
6521
6522 ENTER;
6523 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6524 while (ioa_cfg->in_reset_reload) {
6525 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6526 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6527 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6528 }
6529
6530 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6531 goto out_unlock;
6532
6533 rc = ipr_device_reset(ioa_cfg, res);
6534
6535 if (rc) {
6536 ap->link.device[0].class = ATA_DEV_NONE;
6537 goto out_unlock;
6538 }
6539
6540 ap->link.device[0].class = res->ata_class;
6541 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6542 ap->link.device[0].class = ATA_DEV_NONE;
6543
6544 out_unlock:
6545 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6546 LEAVE;
6547 }
6548
6549 /**
6550 * ipr_ata_post_internal - Cleanup after an internal command
6551 * @qc: ATA queued command
6552 *
6553 * Return value:
6554 * none
6555 **/
6556 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6557 {
6558 struct ipr_sata_port *sata_port = qc->ap->private_data;
6559 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6560 struct ipr_cmnd *ipr_cmd;
6561 struct ipr_hrr_queue *hrrq;
6562 unsigned long flags;
6563
6564 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6565 while (ioa_cfg->in_reset_reload) {
6566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6567 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6568 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6569 }
6570
6571 for_each_hrrq(hrrq, ioa_cfg) {
6572 spin_lock(&hrrq->_lock);
6573 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6574 if (ipr_cmd->qc == qc) {
6575 ipr_device_reset(ioa_cfg, sata_port->res);
6576 break;
6577 }
6578 }
6579 spin_unlock(&hrrq->_lock);
6580 }
6581 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6582 }
6583
6584 /**
6585 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6586 * @regs: destination
6587 * @tf: source ATA taskfile
6588 *
6589 * Return value:
6590 * none
6591 **/
6592 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6593 struct ata_taskfile *tf)
6594 {
6595 regs->feature = tf->feature;
6596 regs->nsect = tf->nsect;
6597 regs->lbal = tf->lbal;
6598 regs->lbam = tf->lbam;
6599 regs->lbah = tf->lbah;
6600 regs->device = tf->device;
6601 regs->command = tf->command;
6602 regs->hob_feature = tf->hob_feature;
6603 regs->hob_nsect = tf->hob_nsect;
6604 regs->hob_lbal = tf->hob_lbal;
6605 regs->hob_lbam = tf->hob_lbam;
6606 regs->hob_lbah = tf->hob_lbah;
6607 regs->ctl = tf->ctl;
6608 }
6609
6610 /**
6611 * ipr_sata_done - done function for SATA commands
6612 * @ipr_cmd: ipr command struct
6613 *
6614 * This function is invoked by the interrupt handler for
6615 * ops generated by the SCSI mid-layer to SATA devices
6616 *
6617 * Return value:
6618 * none
6619 **/
6620 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6621 {
6622 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6623 struct ata_queued_cmd *qc = ipr_cmd->qc;
6624 struct ipr_sata_port *sata_port = qc->ap->private_data;
6625 struct ipr_resource_entry *res = sata_port->res;
6626 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6627
6628 spin_lock(&ipr_cmd->hrrq->_lock);
6629 if (ipr_cmd->ioa_cfg->sis64)
6630 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6631 sizeof(struct ipr_ioasa_gata));
6632 else
6633 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6634 sizeof(struct ipr_ioasa_gata));
6635 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6636
6637 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6638 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6639
6640 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6641 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6642 else
6643 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6644 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6645 spin_unlock(&ipr_cmd->hrrq->_lock);
6646 ata_qc_complete(qc);
6647 }
6648
6649 /**
6650 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6651 * @ipr_cmd: ipr command struct
6652 * @qc: ATA queued command
6653 *
6654 **/
6655 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6656 struct ata_queued_cmd *qc)
6657 {
6658 u32 ioadl_flags = 0;
6659 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6660 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6661 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6662 int len = qc->nbytes;
6663 struct scatterlist *sg;
6664 unsigned int si;
6665 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6666
6667 if (len == 0)
6668 return;
6669
6670 if (qc->dma_dir == DMA_TO_DEVICE) {
6671 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6672 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6673 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6674 ioadl_flags = IPR_IOADL_FLAGS_READ;
6675
6676 ioarcb->data_transfer_length = cpu_to_be32(len);
6677 ioarcb->ioadl_len =
6678 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6679 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6680 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6681
6682 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6683 ioadl64->flags = cpu_to_be32(ioadl_flags);
6684 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6685 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6686
6687 last_ioadl64 = ioadl64;
6688 ioadl64++;
6689 }
6690
6691 if (likely(last_ioadl64))
6692 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6693 }
6694
6695 /**
6696 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6697 * @ipr_cmd: ipr command struct
6698 * @qc: ATA queued command
6699 *
6700 **/
6701 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6702 struct ata_queued_cmd *qc)
6703 {
6704 u32 ioadl_flags = 0;
6705 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6706 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6707 struct ipr_ioadl_desc *last_ioadl = NULL;
6708 int len = qc->nbytes;
6709 struct scatterlist *sg;
6710 unsigned int si;
6711
6712 if (len == 0)
6713 return;
6714
6715 if (qc->dma_dir == DMA_TO_DEVICE) {
6716 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6717 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6718 ioarcb->data_transfer_length = cpu_to_be32(len);
6719 ioarcb->ioadl_len =
6720 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6721 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6722 ioadl_flags = IPR_IOADL_FLAGS_READ;
6723 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6724 ioarcb->read_ioadl_len =
6725 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6726 }
6727
6728 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6729 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6730 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6731
6732 last_ioadl = ioadl;
6733 ioadl++;
6734 }
6735
6736 if (likely(last_ioadl))
6737 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6738 }
6739
6740 /**
6741 * ipr_qc_defer - Get a free ipr_cmd
6742 * @qc: queued command
6743 *
6744 * Return value:
6745 * 0 if success
6746 **/
6747 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6748 {
6749 struct ata_port *ap = qc->ap;
6750 struct ipr_sata_port *sata_port = ap->private_data;
6751 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6752 struct ipr_cmnd *ipr_cmd;
6753 struct ipr_hrr_queue *hrrq;
6754 int hrrq_id;
6755
6756 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6757 hrrq = &ioa_cfg->hrrq[hrrq_id];
6758
6759 qc->lldd_task = NULL;
6760 spin_lock(&hrrq->_lock);
6761 if (unlikely(hrrq->ioa_is_dead)) {
6762 spin_unlock(&hrrq->_lock);
6763 return 0;
6764 }
6765
6766 if (unlikely(!hrrq->allow_cmds)) {
6767 spin_unlock(&hrrq->_lock);
6768 return ATA_DEFER_LINK;
6769 }
6770
6771 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6772 if (ipr_cmd == NULL) {
6773 spin_unlock(&hrrq->_lock);
6774 return ATA_DEFER_LINK;
6775 }
6776
6777 qc->lldd_task = ipr_cmd;
6778 spin_unlock(&hrrq->_lock);
6779 return 0;
6780 }
6781
6782 /**
6783 * ipr_qc_issue - Issue a SATA qc to a device
6784 * @qc: queued command
6785 *
6786 * Return value:
6787 * 0 if success
6788 **/
6789 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6790 {
6791 struct ata_port *ap = qc->ap;
6792 struct ipr_sata_port *sata_port = ap->private_data;
6793 struct ipr_resource_entry *res = sata_port->res;
6794 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6795 struct ipr_cmnd *ipr_cmd;
6796 struct ipr_ioarcb *ioarcb;
6797 struct ipr_ioarcb_ata_regs *regs;
6798
6799 if (qc->lldd_task == NULL)
6800 ipr_qc_defer(qc);
6801
6802 ipr_cmd = qc->lldd_task;
6803 if (ipr_cmd == NULL)
6804 return AC_ERR_SYSTEM;
6805
6806 qc->lldd_task = NULL;
6807 spin_lock(&ipr_cmd->hrrq->_lock);
6808 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6809 ipr_cmd->hrrq->ioa_is_dead)) {
6810 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6811 spin_unlock(&ipr_cmd->hrrq->_lock);
6812 return AC_ERR_SYSTEM;
6813 }
6814
6815 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6816 ioarcb = &ipr_cmd->ioarcb;
6817
6818 if (ioa_cfg->sis64) {
6819 regs = &ipr_cmd->i.ata_ioadl.regs;
6820 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6821 } else
6822 regs = &ioarcb->u.add_data.u.regs;
6823
6824 memset(regs, 0, sizeof(*regs));
6825 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6826
6827 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6828 ipr_cmd->qc = qc;
6829 ipr_cmd->done = ipr_sata_done;
6830 ipr_cmd->ioarcb.res_handle = res->res_handle;
6831 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6832 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6833 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6834 ipr_cmd->dma_use_sg = qc->n_elem;
6835
6836 if (ioa_cfg->sis64)
6837 ipr_build_ata_ioadl64(ipr_cmd, qc);
6838 else
6839 ipr_build_ata_ioadl(ipr_cmd, qc);
6840
6841 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6842 ipr_copy_sata_tf(regs, &qc->tf);
6843 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6844 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6845
6846 switch (qc->tf.protocol) {
6847 case ATA_PROT_NODATA:
6848 case ATA_PROT_PIO:
6849 break;
6850
6851 case ATA_PROT_DMA:
6852 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6853 break;
6854
6855 case ATAPI_PROT_PIO:
6856 case ATAPI_PROT_NODATA:
6857 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6858 break;
6859
6860 case ATAPI_PROT_DMA:
6861 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6862 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6863 break;
6864
6865 default:
6866 WARN_ON(1);
6867 spin_unlock(&ipr_cmd->hrrq->_lock);
6868 return AC_ERR_INVALID;
6869 }
6870
6871 ipr_send_command(ipr_cmd);
6872 spin_unlock(&ipr_cmd->hrrq->_lock);
6873
6874 return 0;
6875 }
6876
6877 /**
6878 * ipr_qc_fill_rtf - Read result TF
6879 * @qc: ATA queued command
6880 *
6881 * Return value:
6882 * true
6883 **/
6884 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6885 {
6886 struct ipr_sata_port *sata_port = qc->ap->private_data;
6887 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6888 struct ata_taskfile *tf = &qc->result_tf;
6889
6890 tf->feature = g->error;
6891 tf->nsect = g->nsect;
6892 tf->lbal = g->lbal;
6893 tf->lbam = g->lbam;
6894 tf->lbah = g->lbah;
6895 tf->device = g->device;
6896 tf->command = g->status;
6897 tf->hob_nsect = g->hob_nsect;
6898 tf->hob_lbal = g->hob_lbal;
6899 tf->hob_lbam = g->hob_lbam;
6900 tf->hob_lbah = g->hob_lbah;
6901
6902 return true;
6903 }
6904
6905 static struct ata_port_operations ipr_sata_ops = {
6906 .phy_reset = ipr_ata_phy_reset,
6907 .hardreset = ipr_sata_reset,
6908 .post_internal_cmd = ipr_ata_post_internal,
6909 .qc_prep = ata_noop_qc_prep,
6910 .qc_defer = ipr_qc_defer,
6911 .qc_issue = ipr_qc_issue,
6912 .qc_fill_rtf = ipr_qc_fill_rtf,
6913 .port_start = ata_sas_port_start,
6914 .port_stop = ata_sas_port_stop
6915 };
6916
6917 static struct ata_port_info sata_port_info = {
6918 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
6919 ATA_FLAG_SAS_HOST,
6920 .pio_mask = ATA_PIO4_ONLY,
6921 .mwdma_mask = ATA_MWDMA2,
6922 .udma_mask = ATA_UDMA6,
6923 .port_ops = &ipr_sata_ops
6924 };
6925
6926 #ifdef CONFIG_PPC_PSERIES
6927 static const u16 ipr_blocked_processors[] = {
6928 PVR_NORTHSTAR,
6929 PVR_PULSAR,
6930 PVR_POWER4,
6931 PVR_ICESTAR,
6932 PVR_SSTAR,
6933 PVR_POWER4p,
6934 PVR_630,
6935 PVR_630p
6936 };
6937
6938 /**
6939 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6940 * @ioa_cfg: ioa cfg struct
6941 *
6942 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6943 * certain pSeries hardware. This function determines if the given
6944 * adapter is in one of these confgurations or not.
6945 *
6946 * Return value:
6947 * 1 if adapter is not supported / 0 if adapter is supported
6948 **/
6949 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6950 {
6951 int i;
6952
6953 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6954 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6955 if (pvr_version_is(ipr_blocked_processors[i]))
6956 return 1;
6957 }
6958 }
6959 return 0;
6960 }
6961 #else
6962 #define ipr_invalid_adapter(ioa_cfg) 0
6963 #endif
6964
6965 /**
6966 * ipr_ioa_bringdown_done - IOA bring down completion.
6967 * @ipr_cmd: ipr command struct
6968 *
6969 * This function processes the completion of an adapter bring down.
6970 * It wakes any reset sleepers.
6971 *
6972 * Return value:
6973 * IPR_RC_JOB_RETURN
6974 **/
6975 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6976 {
6977 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6978 int i;
6979
6980 ENTER;
6981 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6982 ipr_trace;
6983 spin_unlock_irq(ioa_cfg->host->host_lock);
6984 scsi_unblock_requests(ioa_cfg->host);
6985 spin_lock_irq(ioa_cfg->host->host_lock);
6986 }
6987
6988 ioa_cfg->in_reset_reload = 0;
6989 ioa_cfg->reset_retries = 0;
6990 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6991 spin_lock(&ioa_cfg->hrrq[i]._lock);
6992 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6993 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6994 }
6995 wmb();
6996
6997 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6998 wake_up_all(&ioa_cfg->reset_wait_q);
6999 LEAVE;
7000
7001 return IPR_RC_JOB_RETURN;
7002 }
7003
7004 /**
7005 * ipr_ioa_reset_done - IOA reset completion.
7006 * @ipr_cmd: ipr command struct
7007 *
7008 * This function processes the completion of an adapter reset.
7009 * It schedules any necessary mid-layer add/removes and
7010 * wakes any reset sleepers.
7011 *
7012 * Return value:
7013 * IPR_RC_JOB_RETURN
7014 **/
7015 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7016 {
7017 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7018 struct ipr_resource_entry *res;
7019 struct ipr_hostrcb *hostrcb, *temp;
7020 int i = 0, j;
7021
7022 ENTER;
7023 ioa_cfg->in_reset_reload = 0;
7024 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7025 spin_lock(&ioa_cfg->hrrq[j]._lock);
7026 ioa_cfg->hrrq[j].allow_cmds = 1;
7027 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7028 }
7029 wmb();
7030 ioa_cfg->reset_cmd = NULL;
7031 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7032
7033 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7034 if (res->add_to_ml || res->del_from_ml) {
7035 ipr_trace;
7036 break;
7037 }
7038 }
7039 schedule_work(&ioa_cfg->work_q);
7040
7041 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
7042 list_del(&hostrcb->queue);
7043 if (i++ < IPR_NUM_LOG_HCAMS)
7044 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
7045 else
7046 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
7047 }
7048
7049 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7050 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7051
7052 ioa_cfg->reset_retries = 0;
7053 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7054 wake_up_all(&ioa_cfg->reset_wait_q);
7055
7056 spin_unlock(ioa_cfg->host->host_lock);
7057 scsi_unblock_requests(ioa_cfg->host);
7058 spin_lock(ioa_cfg->host->host_lock);
7059
7060 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7061 scsi_block_requests(ioa_cfg->host);
7062
7063 schedule_work(&ioa_cfg->work_q);
7064 LEAVE;
7065 return IPR_RC_JOB_RETURN;
7066 }
7067
7068 /**
7069 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7070 * @supported_dev: supported device struct
7071 * @vpids: vendor product id struct
7072 *
7073 * Return value:
7074 * none
7075 **/
7076 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7077 struct ipr_std_inq_vpids *vpids)
7078 {
7079 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7080 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7081 supported_dev->num_records = 1;
7082 supported_dev->data_length =
7083 cpu_to_be16(sizeof(struct ipr_supported_device));
7084 supported_dev->reserved = 0;
7085 }
7086
7087 /**
7088 * ipr_set_supported_devs - Send Set Supported Devices for a device
7089 * @ipr_cmd: ipr command struct
7090 *
7091 * This function sends a Set Supported Devices to the adapter
7092 *
7093 * Return value:
7094 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7095 **/
7096 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7097 {
7098 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7099 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7100 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7101 struct ipr_resource_entry *res = ipr_cmd->u.res;
7102
7103 ipr_cmd->job_step = ipr_ioa_reset_done;
7104
7105 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7106 if (!ipr_is_scsi_disk(res))
7107 continue;
7108
7109 ipr_cmd->u.res = res;
7110 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7111
7112 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7113 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7114 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7115
7116 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7117 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7118 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7119 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7120
7121 ipr_init_ioadl(ipr_cmd,
7122 ioa_cfg->vpd_cbs_dma +
7123 offsetof(struct ipr_misc_cbs, supp_dev),
7124 sizeof(struct ipr_supported_device),
7125 IPR_IOADL_FLAGS_WRITE_LAST);
7126
7127 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7128 IPR_SET_SUP_DEVICE_TIMEOUT);
7129
7130 if (!ioa_cfg->sis64)
7131 ipr_cmd->job_step = ipr_set_supported_devs;
7132 LEAVE;
7133 return IPR_RC_JOB_RETURN;
7134 }
7135
7136 LEAVE;
7137 return IPR_RC_JOB_CONTINUE;
7138 }
7139
7140 /**
7141 * ipr_get_mode_page - Locate specified mode page
7142 * @mode_pages: mode page buffer
7143 * @page_code: page code to find
7144 * @len: minimum required length for mode page
7145 *
7146 * Return value:
7147 * pointer to mode page / NULL on failure
7148 **/
7149 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7150 u32 page_code, u32 len)
7151 {
7152 struct ipr_mode_page_hdr *mode_hdr;
7153 u32 page_length;
7154 u32 length;
7155
7156 if (!mode_pages || (mode_pages->hdr.length == 0))
7157 return NULL;
7158
7159 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7160 mode_hdr = (struct ipr_mode_page_hdr *)
7161 (mode_pages->data + mode_pages->hdr.block_desc_len);
7162
7163 while (length) {
7164 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7165 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7166 return mode_hdr;
7167 break;
7168 } else {
7169 page_length = (sizeof(struct ipr_mode_page_hdr) +
7170 mode_hdr->page_length);
7171 length -= page_length;
7172 mode_hdr = (struct ipr_mode_page_hdr *)
7173 ((unsigned long)mode_hdr + page_length);
7174 }
7175 }
7176 return NULL;
7177 }
7178
7179 /**
7180 * ipr_check_term_power - Check for term power errors
7181 * @ioa_cfg: ioa config struct
7182 * @mode_pages: IOAFP mode pages buffer
7183 *
7184 * Check the IOAFP's mode page 28 for term power errors
7185 *
7186 * Return value:
7187 * nothing
7188 **/
7189 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7190 struct ipr_mode_pages *mode_pages)
7191 {
7192 int i;
7193 int entry_length;
7194 struct ipr_dev_bus_entry *bus;
7195 struct ipr_mode_page28 *mode_page;
7196
7197 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7198 sizeof(struct ipr_mode_page28));
7199
7200 entry_length = mode_page->entry_length;
7201
7202 bus = mode_page->bus;
7203
7204 for (i = 0; i < mode_page->num_entries; i++) {
7205 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7206 dev_err(&ioa_cfg->pdev->dev,
7207 "Term power is absent on scsi bus %d\n",
7208 bus->res_addr.bus);
7209 }
7210
7211 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7212 }
7213 }
7214
7215 /**
7216 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7217 * @ioa_cfg: ioa config struct
7218 *
7219 * Looks through the config table checking for SES devices. If
7220 * the SES device is in the SES table indicating a maximum SCSI
7221 * bus speed, the speed is limited for the bus.
7222 *
7223 * Return value:
7224 * none
7225 **/
7226 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7227 {
7228 u32 max_xfer_rate;
7229 int i;
7230
7231 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7232 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7233 ioa_cfg->bus_attr[i].bus_width);
7234
7235 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7236 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7237 }
7238 }
7239
7240 /**
7241 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7242 * @ioa_cfg: ioa config struct
7243 * @mode_pages: mode page 28 buffer
7244 *
7245 * Updates mode page 28 based on driver configuration
7246 *
7247 * Return value:
7248 * none
7249 **/
7250 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7251 struct ipr_mode_pages *mode_pages)
7252 {
7253 int i, entry_length;
7254 struct ipr_dev_bus_entry *bus;
7255 struct ipr_bus_attributes *bus_attr;
7256 struct ipr_mode_page28 *mode_page;
7257
7258 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7259 sizeof(struct ipr_mode_page28));
7260
7261 entry_length = mode_page->entry_length;
7262
7263 /* Loop for each device bus entry */
7264 for (i = 0, bus = mode_page->bus;
7265 i < mode_page->num_entries;
7266 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7267 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7268 dev_err(&ioa_cfg->pdev->dev,
7269 "Invalid resource address reported: 0x%08X\n",
7270 IPR_GET_PHYS_LOC(bus->res_addr));
7271 continue;
7272 }
7273
7274 bus_attr = &ioa_cfg->bus_attr[i];
7275 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7276 bus->bus_width = bus_attr->bus_width;
7277 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7278 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7279 if (bus_attr->qas_enabled)
7280 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7281 else
7282 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7283 }
7284 }
7285
7286 /**
7287 * ipr_build_mode_select - Build a mode select command
7288 * @ipr_cmd: ipr command struct
7289 * @res_handle: resource handle to send command to
7290 * @parm: Byte 2 of Mode Sense command
7291 * @dma_addr: DMA buffer address
7292 * @xfer_len: data transfer length
7293 *
7294 * Return value:
7295 * none
7296 **/
7297 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7298 __be32 res_handle, u8 parm,
7299 dma_addr_t dma_addr, u8 xfer_len)
7300 {
7301 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7302
7303 ioarcb->res_handle = res_handle;
7304 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7305 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7306 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7307 ioarcb->cmd_pkt.cdb[1] = parm;
7308 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7309
7310 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7311 }
7312
7313 /**
7314 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7315 * @ipr_cmd: ipr command struct
7316 *
7317 * This function sets up the SCSI bus attributes and sends
7318 * a Mode Select for Page 28 to activate them.
7319 *
7320 * Return value:
7321 * IPR_RC_JOB_RETURN
7322 **/
7323 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7324 {
7325 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7326 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7327 int length;
7328
7329 ENTER;
7330 ipr_scsi_bus_speed_limit(ioa_cfg);
7331 ipr_check_term_power(ioa_cfg, mode_pages);
7332 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7333 length = mode_pages->hdr.length + 1;
7334 mode_pages->hdr.length = 0;
7335
7336 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7337 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7338 length);
7339
7340 ipr_cmd->job_step = ipr_set_supported_devs;
7341 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7342 struct ipr_resource_entry, queue);
7343 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7344
7345 LEAVE;
7346 return IPR_RC_JOB_RETURN;
7347 }
7348
7349 /**
7350 * ipr_build_mode_sense - Builds a mode sense command
7351 * @ipr_cmd: ipr command struct
7352 * @res: resource entry struct
7353 * @parm: Byte 2 of mode sense command
7354 * @dma_addr: DMA address of mode sense buffer
7355 * @xfer_len: Size of DMA buffer
7356 *
7357 * Return value:
7358 * none
7359 **/
7360 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7361 __be32 res_handle,
7362 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7363 {
7364 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7365
7366 ioarcb->res_handle = res_handle;
7367 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7368 ioarcb->cmd_pkt.cdb[2] = parm;
7369 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7370 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7371
7372 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7373 }
7374
7375 /**
7376 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7377 * @ipr_cmd: ipr command struct
7378 *
7379 * This function handles the failure of an IOA bringup command.
7380 *
7381 * Return value:
7382 * IPR_RC_JOB_RETURN
7383 **/
7384 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7385 {
7386 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7387 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7388
7389 dev_err(&ioa_cfg->pdev->dev,
7390 "0x%02X failed with IOASC: 0x%08X\n",
7391 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7392
7393 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7394 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7395 return IPR_RC_JOB_RETURN;
7396 }
7397
7398 /**
7399 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7400 * @ipr_cmd: ipr command struct
7401 *
7402 * This function handles the failure of a Mode Sense to the IOAFP.
7403 * Some adapters do not handle all mode pages.
7404 *
7405 * Return value:
7406 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7407 **/
7408 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7409 {
7410 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7411 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7412
7413 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7414 ipr_cmd->job_step = ipr_set_supported_devs;
7415 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7416 struct ipr_resource_entry, queue);
7417 return IPR_RC_JOB_CONTINUE;
7418 }
7419
7420 return ipr_reset_cmd_failed(ipr_cmd);
7421 }
7422
7423 /**
7424 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7425 * @ipr_cmd: ipr command struct
7426 *
7427 * This function send a Page 28 mode sense to the IOA to
7428 * retrieve SCSI bus attributes.
7429 *
7430 * Return value:
7431 * IPR_RC_JOB_RETURN
7432 **/
7433 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7434 {
7435 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7436
7437 ENTER;
7438 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7439 0x28, ioa_cfg->vpd_cbs_dma +
7440 offsetof(struct ipr_misc_cbs, mode_pages),
7441 sizeof(struct ipr_mode_pages));
7442
7443 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7444 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7445
7446 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7447
7448 LEAVE;
7449 return IPR_RC_JOB_RETURN;
7450 }
7451
7452 /**
7453 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7454 * @ipr_cmd: ipr command struct
7455 *
7456 * This function enables dual IOA RAID support if possible.
7457 *
7458 * Return value:
7459 * IPR_RC_JOB_RETURN
7460 **/
7461 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7462 {
7463 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7464 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7465 struct ipr_mode_page24 *mode_page;
7466 int length;
7467
7468 ENTER;
7469 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7470 sizeof(struct ipr_mode_page24));
7471
7472 if (mode_page)
7473 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7474
7475 length = mode_pages->hdr.length + 1;
7476 mode_pages->hdr.length = 0;
7477
7478 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7479 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7480 length);
7481
7482 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7483 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7484
7485 LEAVE;
7486 return IPR_RC_JOB_RETURN;
7487 }
7488
7489 /**
7490 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7491 * @ipr_cmd: ipr command struct
7492 *
7493 * This function handles the failure of a Mode Sense to the IOAFP.
7494 * Some adapters do not handle all mode pages.
7495 *
7496 * Return value:
7497 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7498 **/
7499 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7500 {
7501 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7502
7503 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7504 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7505 return IPR_RC_JOB_CONTINUE;
7506 }
7507
7508 return ipr_reset_cmd_failed(ipr_cmd);
7509 }
7510
7511 /**
7512 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7513 * @ipr_cmd: ipr command struct
7514 *
7515 * This function send a mode sense to the IOA to retrieve
7516 * the IOA Advanced Function Control mode page.
7517 *
7518 * Return value:
7519 * IPR_RC_JOB_RETURN
7520 **/
7521 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7522 {
7523 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7524
7525 ENTER;
7526 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7527 0x24, ioa_cfg->vpd_cbs_dma +
7528 offsetof(struct ipr_misc_cbs, mode_pages),
7529 sizeof(struct ipr_mode_pages));
7530
7531 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7532 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7533
7534 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7535
7536 LEAVE;
7537 return IPR_RC_JOB_RETURN;
7538 }
7539
7540 /**
7541 * ipr_init_res_table - Initialize the resource table
7542 * @ipr_cmd: ipr command struct
7543 *
7544 * This function looks through the existing resource table, comparing
7545 * it with the config table. This function will take care of old/new
7546 * devices and schedule adding/removing them from the mid-layer
7547 * as appropriate.
7548 *
7549 * Return value:
7550 * IPR_RC_JOB_CONTINUE
7551 **/
7552 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7553 {
7554 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7555 struct ipr_resource_entry *res, *temp;
7556 struct ipr_config_table_entry_wrapper cfgtew;
7557 int entries, found, flag, i;
7558 LIST_HEAD(old_res);
7559
7560 ENTER;
7561 if (ioa_cfg->sis64)
7562 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7563 else
7564 flag = ioa_cfg->u.cfg_table->hdr.flags;
7565
7566 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7567 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7568
7569 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7570 list_move_tail(&res->queue, &old_res);
7571
7572 if (ioa_cfg->sis64)
7573 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7574 else
7575 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7576
7577 for (i = 0; i < entries; i++) {
7578 if (ioa_cfg->sis64)
7579 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7580 else
7581 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7582 found = 0;
7583
7584 list_for_each_entry_safe(res, temp, &old_res, queue) {
7585 if (ipr_is_same_device(res, &cfgtew)) {
7586 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7587 found = 1;
7588 break;
7589 }
7590 }
7591
7592 if (!found) {
7593 if (list_empty(&ioa_cfg->free_res_q)) {
7594 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7595 break;
7596 }
7597
7598 found = 1;
7599 res = list_entry(ioa_cfg->free_res_q.next,
7600 struct ipr_resource_entry, queue);
7601 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7602 ipr_init_res_entry(res, &cfgtew);
7603 res->add_to_ml = 1;
7604 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7605 res->sdev->allow_restart = 1;
7606
7607 if (found)
7608 ipr_update_res_entry(res, &cfgtew);
7609 }
7610
7611 list_for_each_entry_safe(res, temp, &old_res, queue) {
7612 if (res->sdev) {
7613 res->del_from_ml = 1;
7614 res->res_handle = IPR_INVALID_RES_HANDLE;
7615 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7616 }
7617 }
7618
7619 list_for_each_entry_safe(res, temp, &old_res, queue) {
7620 ipr_clear_res_target(res);
7621 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7622 }
7623
7624 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7625 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7626 else
7627 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7628
7629 LEAVE;
7630 return IPR_RC_JOB_CONTINUE;
7631 }
7632
7633 /**
7634 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7635 * @ipr_cmd: ipr command struct
7636 *
7637 * This function sends a Query IOA Configuration command
7638 * to the adapter to retrieve the IOA configuration table.
7639 *
7640 * Return value:
7641 * IPR_RC_JOB_RETURN
7642 **/
7643 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7644 {
7645 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7646 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7647 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7648 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7649
7650 ENTER;
7651 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7652 ioa_cfg->dual_raid = 1;
7653 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7654 ucode_vpd->major_release, ucode_vpd->card_type,
7655 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7656 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7657 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7658
7659 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7660 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7661 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7662 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7663
7664 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7665 IPR_IOADL_FLAGS_READ_LAST);
7666
7667 ipr_cmd->job_step = ipr_init_res_table;
7668
7669 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7670
7671 LEAVE;
7672 return IPR_RC_JOB_RETURN;
7673 }
7674
7675 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7676 {
7677 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7678
7679 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7680 return IPR_RC_JOB_CONTINUE;
7681
7682 return ipr_reset_cmd_failed(ipr_cmd);
7683 }
7684
7685 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7686 __be32 res_handle, u8 sa_code)
7687 {
7688 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7689
7690 ioarcb->res_handle = res_handle;
7691 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7692 ioarcb->cmd_pkt.cdb[1] = sa_code;
7693 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7694 }
7695
7696 /**
7697 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7698 * action
7699 *
7700 * Return value:
7701 * none
7702 **/
7703 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7704 {
7705 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7706 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7707 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7708
7709 ENTER;
7710
7711 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7712
7713 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7714 ipr_build_ioa_service_action(ipr_cmd,
7715 cpu_to_be32(IPR_IOA_RES_HANDLE),
7716 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7717
7718 ioarcb->cmd_pkt.cdb[2] = 0x40;
7719
7720 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7721 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7722 IPR_SET_SUP_DEVICE_TIMEOUT);
7723
7724 LEAVE;
7725 return IPR_RC_JOB_RETURN;
7726 }
7727
7728 LEAVE;
7729 return IPR_RC_JOB_CONTINUE;
7730 }
7731
7732 /**
7733 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7734 * @ipr_cmd: ipr command struct
7735 *
7736 * This utility function sends an inquiry to the adapter.
7737 *
7738 * Return value:
7739 * none
7740 **/
7741 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7742 dma_addr_t dma_addr, u8 xfer_len)
7743 {
7744 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7745
7746 ENTER;
7747 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7748 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7749
7750 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7751 ioarcb->cmd_pkt.cdb[1] = flags;
7752 ioarcb->cmd_pkt.cdb[2] = page;
7753 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7754
7755 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7756
7757 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7758 LEAVE;
7759 }
7760
7761 /**
7762 * ipr_inquiry_page_supported - Is the given inquiry page supported
7763 * @page0: inquiry page 0 buffer
7764 * @page: page code.
7765 *
7766 * This function determines if the specified inquiry page is supported.
7767 *
7768 * Return value:
7769 * 1 if page is supported / 0 if not
7770 **/
7771 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7772 {
7773 int i;
7774
7775 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7776 if (page0->page[i] == page)
7777 return 1;
7778
7779 return 0;
7780 }
7781
7782 /**
7783 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7784 * @ipr_cmd: ipr command struct
7785 *
7786 * This function sends a Page 0xC4 inquiry to the adapter
7787 * to retrieve software VPD information.
7788 *
7789 * Return value:
7790 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7791 **/
7792 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7793 {
7794 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7795 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7796 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7797
7798 ENTER;
7799 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
7800 memset(pageC4, 0, sizeof(*pageC4));
7801
7802 if (ipr_inquiry_page_supported(page0, 0xC4)) {
7803 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7804 (ioa_cfg->vpd_cbs_dma
7805 + offsetof(struct ipr_misc_cbs,
7806 pageC4_data)),
7807 sizeof(struct ipr_inquiry_pageC4));
7808 return IPR_RC_JOB_RETURN;
7809 }
7810
7811 LEAVE;
7812 return IPR_RC_JOB_CONTINUE;
7813 }
7814
7815 /**
7816 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7817 * @ipr_cmd: ipr command struct
7818 *
7819 * This function sends a Page 0xD0 inquiry to the adapter
7820 * to retrieve adapter capabilities.
7821 *
7822 * Return value:
7823 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7824 **/
7825 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7826 {
7827 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7828 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7829 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7830
7831 ENTER;
7832 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7833 memset(cap, 0, sizeof(*cap));
7834
7835 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7836 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7837 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7838 sizeof(struct ipr_inquiry_cap));
7839 return IPR_RC_JOB_RETURN;
7840 }
7841
7842 LEAVE;
7843 return IPR_RC_JOB_CONTINUE;
7844 }
7845
7846 /**
7847 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7848 * @ipr_cmd: ipr command struct
7849 *
7850 * This function sends a Page 3 inquiry to the adapter
7851 * to retrieve software VPD information.
7852 *
7853 * Return value:
7854 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7855 **/
7856 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7857 {
7858 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7859
7860 ENTER;
7861
7862 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7863
7864 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7865 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7866 sizeof(struct ipr_inquiry_page3));
7867
7868 LEAVE;
7869 return IPR_RC_JOB_RETURN;
7870 }
7871
7872 /**
7873 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7874 * @ipr_cmd: ipr command struct
7875 *
7876 * This function sends a Page 0 inquiry to the adapter
7877 * to retrieve supported inquiry pages.
7878 *
7879 * Return value:
7880 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7881 **/
7882 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7883 {
7884 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7885 char type[5];
7886
7887 ENTER;
7888
7889 /* Grab the type out of the VPD and store it away */
7890 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7891 type[4] = '\0';
7892 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7893
7894 if (ipr_invalid_adapter(ioa_cfg)) {
7895 dev_err(&ioa_cfg->pdev->dev,
7896 "Adapter not supported in this hardware configuration.\n");
7897
7898 if (!ipr_testmode) {
7899 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7900 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7901 list_add_tail(&ipr_cmd->queue,
7902 &ioa_cfg->hrrq->hrrq_free_q);
7903 return IPR_RC_JOB_RETURN;
7904 }
7905 }
7906
7907 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7908
7909 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7910 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7911 sizeof(struct ipr_inquiry_page0));
7912
7913 LEAVE;
7914 return IPR_RC_JOB_RETURN;
7915 }
7916
7917 /**
7918 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7919 * @ipr_cmd: ipr command struct
7920 *
7921 * This function sends a standard inquiry to the adapter.
7922 *
7923 * Return value:
7924 * IPR_RC_JOB_RETURN
7925 **/
7926 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7927 {
7928 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7929
7930 ENTER;
7931 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7932
7933 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7934 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7935 sizeof(struct ipr_ioa_vpd));
7936
7937 LEAVE;
7938 return IPR_RC_JOB_RETURN;
7939 }
7940
7941 /**
7942 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7943 * @ipr_cmd: ipr command struct
7944 *
7945 * This function send an Identify Host Request Response Queue
7946 * command to establish the HRRQ with the adapter.
7947 *
7948 * Return value:
7949 * IPR_RC_JOB_RETURN
7950 **/
7951 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7952 {
7953 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7954 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7955 struct ipr_hrr_queue *hrrq;
7956
7957 ENTER;
7958 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7959 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7960
7961 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7962 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7963
7964 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7965 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7966
7967 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7968 if (ioa_cfg->sis64)
7969 ioarcb->cmd_pkt.cdb[1] = 0x1;
7970
7971 if (ioa_cfg->nvectors == 1)
7972 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7973 else
7974 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7975
7976 ioarcb->cmd_pkt.cdb[2] =
7977 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7978 ioarcb->cmd_pkt.cdb[3] =
7979 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7980 ioarcb->cmd_pkt.cdb[4] =
7981 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7982 ioarcb->cmd_pkt.cdb[5] =
7983 ((u64) hrrq->host_rrq_dma) & 0xff;
7984 ioarcb->cmd_pkt.cdb[7] =
7985 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7986 ioarcb->cmd_pkt.cdb[8] =
7987 (sizeof(u32) * hrrq->size) & 0xff;
7988
7989 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7990 ioarcb->cmd_pkt.cdb[9] =
7991 ioa_cfg->identify_hrrq_index;
7992
7993 if (ioa_cfg->sis64) {
7994 ioarcb->cmd_pkt.cdb[10] =
7995 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
7996 ioarcb->cmd_pkt.cdb[11] =
7997 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
7998 ioarcb->cmd_pkt.cdb[12] =
7999 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8000 ioarcb->cmd_pkt.cdb[13] =
8001 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8002 }
8003
8004 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8005 ioarcb->cmd_pkt.cdb[14] =
8006 ioa_cfg->identify_hrrq_index;
8007
8008 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8009 IPR_INTERNAL_TIMEOUT);
8010
8011 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8012 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8013
8014 LEAVE;
8015 return IPR_RC_JOB_RETURN;
8016 }
8017
8018 LEAVE;
8019 return IPR_RC_JOB_CONTINUE;
8020 }
8021
8022 /**
8023 * ipr_reset_timer_done - Adapter reset timer function
8024 * @ipr_cmd: ipr command struct
8025 *
8026 * Description: This function is used in adapter reset processing
8027 * for timing events. If the reset_cmd pointer in the IOA
8028 * config struct is not this adapter's we are doing nested
8029 * resets and fail_all_ops will take care of freeing the
8030 * command block.
8031 *
8032 * Return value:
8033 * none
8034 **/
8035 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
8036 {
8037 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8038 unsigned long lock_flags = 0;
8039
8040 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8041
8042 if (ioa_cfg->reset_cmd == ipr_cmd) {
8043 list_del(&ipr_cmd->queue);
8044 ipr_cmd->done(ipr_cmd);
8045 }
8046
8047 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8048 }
8049
8050 /**
8051 * ipr_reset_start_timer - Start a timer for adapter reset job
8052 * @ipr_cmd: ipr command struct
8053 * @timeout: timeout value
8054 *
8055 * Description: This function is used in adapter reset processing
8056 * for timing events. If the reset_cmd pointer in the IOA
8057 * config struct is not this adapter's we are doing nested
8058 * resets and fail_all_ops will take care of freeing the
8059 * command block.
8060 *
8061 * Return value:
8062 * none
8063 **/
8064 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8065 unsigned long timeout)
8066 {
8067
8068 ENTER;
8069 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8070 ipr_cmd->done = ipr_reset_ioa_job;
8071
8072 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8073 ipr_cmd->timer.expires = jiffies + timeout;
8074 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8075 add_timer(&ipr_cmd->timer);
8076 }
8077
8078 /**
8079 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8080 * @ioa_cfg: ioa cfg struct
8081 *
8082 * Return value:
8083 * nothing
8084 **/
8085 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8086 {
8087 struct ipr_hrr_queue *hrrq;
8088
8089 for_each_hrrq(hrrq, ioa_cfg) {
8090 spin_lock(&hrrq->_lock);
8091 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8092
8093 /* Initialize Host RRQ pointers */
8094 hrrq->hrrq_start = hrrq->host_rrq;
8095 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8096 hrrq->hrrq_curr = hrrq->hrrq_start;
8097 hrrq->toggle_bit = 1;
8098 spin_unlock(&hrrq->_lock);
8099 }
8100 wmb();
8101
8102 ioa_cfg->identify_hrrq_index = 0;
8103 if (ioa_cfg->hrrq_num == 1)
8104 atomic_set(&ioa_cfg->hrrq_index, 0);
8105 else
8106 atomic_set(&ioa_cfg->hrrq_index, 1);
8107
8108 /* Zero out config table */
8109 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8110 }
8111
8112 /**
8113 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8114 * @ipr_cmd: ipr command struct
8115 *
8116 * Return value:
8117 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8118 **/
8119 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8120 {
8121 unsigned long stage, stage_time;
8122 u32 feedback;
8123 volatile u32 int_reg;
8124 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8125 u64 maskval = 0;
8126
8127 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8128 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8129 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8130
8131 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8132
8133 /* sanity check the stage_time value */
8134 if (stage_time == 0)
8135 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8136 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8137 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8138 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8139 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8140
8141 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8142 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8143 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8144 stage_time = ioa_cfg->transop_timeout;
8145 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8146 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8147 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8148 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8149 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8150 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8151 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8152 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8153 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8154 return IPR_RC_JOB_CONTINUE;
8155 }
8156 }
8157
8158 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8159 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8160 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8161 ipr_cmd->done = ipr_reset_ioa_job;
8162 add_timer(&ipr_cmd->timer);
8163
8164 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8165
8166 return IPR_RC_JOB_RETURN;
8167 }
8168
8169 /**
8170 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8171 * @ipr_cmd: ipr command struct
8172 *
8173 * This function reinitializes some control blocks and
8174 * enables destructive diagnostics on the adapter.
8175 *
8176 * Return value:
8177 * IPR_RC_JOB_RETURN
8178 **/
8179 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8180 {
8181 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8182 volatile u32 int_reg;
8183 volatile u64 maskval;
8184 int i;
8185
8186 ENTER;
8187 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8188 ipr_init_ioa_mem(ioa_cfg);
8189
8190 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8191 spin_lock(&ioa_cfg->hrrq[i]._lock);
8192 ioa_cfg->hrrq[i].allow_interrupts = 1;
8193 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8194 }
8195 wmb();
8196 if (ioa_cfg->sis64) {
8197 /* Set the adapter to the correct endian mode. */
8198 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8199 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8200 }
8201
8202 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8203
8204 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8205 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8206 ioa_cfg->regs.clr_interrupt_mask_reg32);
8207 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8208 return IPR_RC_JOB_CONTINUE;
8209 }
8210
8211 /* Enable destructive diagnostics on IOA */
8212 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8213
8214 if (ioa_cfg->sis64) {
8215 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8216 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8217 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8218 } else
8219 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8220
8221 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8222
8223 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8224
8225 if (ioa_cfg->sis64) {
8226 ipr_cmd->job_step = ipr_reset_next_stage;
8227 return IPR_RC_JOB_CONTINUE;
8228 }
8229
8230 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8231 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8232 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8233 ipr_cmd->done = ipr_reset_ioa_job;
8234 add_timer(&ipr_cmd->timer);
8235 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8236
8237 LEAVE;
8238 return IPR_RC_JOB_RETURN;
8239 }
8240
8241 /**
8242 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8243 * @ipr_cmd: ipr command struct
8244 *
8245 * This function is invoked when an adapter dump has run out
8246 * of processing time.
8247 *
8248 * Return value:
8249 * IPR_RC_JOB_CONTINUE
8250 **/
8251 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8252 {
8253 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8254
8255 if (ioa_cfg->sdt_state == GET_DUMP)
8256 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8257 else if (ioa_cfg->sdt_state == READ_DUMP)
8258 ioa_cfg->sdt_state = ABORT_DUMP;
8259
8260 ioa_cfg->dump_timeout = 1;
8261 ipr_cmd->job_step = ipr_reset_alert;
8262
8263 return IPR_RC_JOB_CONTINUE;
8264 }
8265
8266 /**
8267 * ipr_unit_check_no_data - Log a unit check/no data error log
8268 * @ioa_cfg: ioa config struct
8269 *
8270 * Logs an error indicating the adapter unit checked, but for some
8271 * reason, we were unable to fetch the unit check buffer.
8272 *
8273 * Return value:
8274 * nothing
8275 **/
8276 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8277 {
8278 ioa_cfg->errors_logged++;
8279 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8280 }
8281
8282 /**
8283 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8284 * @ioa_cfg: ioa config struct
8285 *
8286 * Fetches the unit check buffer from the adapter by clocking the data
8287 * through the mailbox register.
8288 *
8289 * Return value:
8290 * nothing
8291 **/
8292 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8293 {
8294 unsigned long mailbox;
8295 struct ipr_hostrcb *hostrcb;
8296 struct ipr_uc_sdt sdt;
8297 int rc, length;
8298 u32 ioasc;
8299
8300 mailbox = readl(ioa_cfg->ioa_mailbox);
8301
8302 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8303 ipr_unit_check_no_data(ioa_cfg);
8304 return;
8305 }
8306
8307 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8308 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8309 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8310
8311 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8312 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8313 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8314 ipr_unit_check_no_data(ioa_cfg);
8315 return;
8316 }
8317
8318 /* Find length of the first sdt entry (UC buffer) */
8319 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8320 length = be32_to_cpu(sdt.entry[0].end_token);
8321 else
8322 length = (be32_to_cpu(sdt.entry[0].end_token) -
8323 be32_to_cpu(sdt.entry[0].start_token)) &
8324 IPR_FMT2_MBX_ADDR_MASK;
8325
8326 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8327 struct ipr_hostrcb, queue);
8328 list_del(&hostrcb->queue);
8329 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8330
8331 rc = ipr_get_ldump_data_section(ioa_cfg,
8332 be32_to_cpu(sdt.entry[0].start_token),
8333 (__be32 *)&hostrcb->hcam,
8334 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8335
8336 if (!rc) {
8337 ipr_handle_log_data(ioa_cfg, hostrcb);
8338 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8339 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8340 ioa_cfg->sdt_state == GET_DUMP)
8341 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8342 } else
8343 ipr_unit_check_no_data(ioa_cfg);
8344
8345 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8346 }
8347
8348 /**
8349 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8350 * @ipr_cmd: ipr command struct
8351 *
8352 * Description: This function will call to get the unit check buffer.
8353 *
8354 * Return value:
8355 * IPR_RC_JOB_RETURN
8356 **/
8357 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8358 {
8359 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8360
8361 ENTER;
8362 ioa_cfg->ioa_unit_checked = 0;
8363 ipr_get_unit_check_buffer(ioa_cfg);
8364 ipr_cmd->job_step = ipr_reset_alert;
8365 ipr_reset_start_timer(ipr_cmd, 0);
8366
8367 LEAVE;
8368 return IPR_RC_JOB_RETURN;
8369 }
8370
8371 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8372 {
8373 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8374
8375 ENTER;
8376
8377 if (ioa_cfg->sdt_state != GET_DUMP)
8378 return IPR_RC_JOB_RETURN;
8379
8380 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8381 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8382 IPR_PCII_MAILBOX_STABLE)) {
8383
8384 if (!ipr_cmd->u.time_left)
8385 dev_err(&ioa_cfg->pdev->dev,
8386 "Timed out waiting for Mailbox register.\n");
8387
8388 ioa_cfg->sdt_state = READ_DUMP;
8389 ioa_cfg->dump_timeout = 0;
8390 if (ioa_cfg->sis64)
8391 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8392 else
8393 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8394 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8395 schedule_work(&ioa_cfg->work_q);
8396
8397 } else {
8398 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8399 ipr_reset_start_timer(ipr_cmd,
8400 IPR_CHECK_FOR_RESET_TIMEOUT);
8401 }
8402
8403 LEAVE;
8404 return IPR_RC_JOB_RETURN;
8405 }
8406
8407 /**
8408 * ipr_reset_restore_cfg_space - Restore PCI config space.
8409 * @ipr_cmd: ipr command struct
8410 *
8411 * Description: This function restores the saved PCI config space of
8412 * the adapter, fails all outstanding ops back to the callers, and
8413 * fetches the dump/unit check if applicable to this reset.
8414 *
8415 * Return value:
8416 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8417 **/
8418 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8419 {
8420 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8421 u32 int_reg;
8422
8423 ENTER;
8424 ioa_cfg->pdev->state_saved = true;
8425 pci_restore_state(ioa_cfg->pdev);
8426
8427 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8428 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8429 return IPR_RC_JOB_CONTINUE;
8430 }
8431
8432 ipr_fail_all_ops(ioa_cfg);
8433
8434 if (ioa_cfg->sis64) {
8435 /* Set the adapter to the correct endian mode. */
8436 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8437 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8438 }
8439
8440 if (ioa_cfg->ioa_unit_checked) {
8441 if (ioa_cfg->sis64) {
8442 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8443 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8444 return IPR_RC_JOB_RETURN;
8445 } else {
8446 ioa_cfg->ioa_unit_checked = 0;
8447 ipr_get_unit_check_buffer(ioa_cfg);
8448 ipr_cmd->job_step = ipr_reset_alert;
8449 ipr_reset_start_timer(ipr_cmd, 0);
8450 return IPR_RC_JOB_RETURN;
8451 }
8452 }
8453
8454 if (ioa_cfg->in_ioa_bringdown) {
8455 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8456 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8457 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8458 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8459 } else {
8460 ipr_cmd->job_step = ipr_reset_enable_ioa;
8461 }
8462
8463 LEAVE;
8464 return IPR_RC_JOB_CONTINUE;
8465 }
8466
8467 /**
8468 * ipr_reset_bist_done - BIST has completed on the adapter.
8469 * @ipr_cmd: ipr command struct
8470 *
8471 * Description: Unblock config space and resume the reset process.
8472 *
8473 * Return value:
8474 * IPR_RC_JOB_CONTINUE
8475 **/
8476 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8477 {
8478 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8479
8480 ENTER;
8481 if (ioa_cfg->cfg_locked)
8482 pci_cfg_access_unlock(ioa_cfg->pdev);
8483 ioa_cfg->cfg_locked = 0;
8484 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8485 LEAVE;
8486 return IPR_RC_JOB_CONTINUE;
8487 }
8488
8489 /**
8490 * ipr_reset_start_bist - Run BIST on the adapter.
8491 * @ipr_cmd: ipr command struct
8492 *
8493 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8494 *
8495 * Return value:
8496 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8497 **/
8498 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8499 {
8500 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8501 int rc = PCIBIOS_SUCCESSFUL;
8502
8503 ENTER;
8504 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8505 writel(IPR_UPROCI_SIS64_START_BIST,
8506 ioa_cfg->regs.set_uproc_interrupt_reg32);
8507 else
8508 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8509
8510 if (rc == PCIBIOS_SUCCESSFUL) {
8511 ipr_cmd->job_step = ipr_reset_bist_done;
8512 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8513 rc = IPR_RC_JOB_RETURN;
8514 } else {
8515 if (ioa_cfg->cfg_locked)
8516 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8517 ioa_cfg->cfg_locked = 0;
8518 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8519 rc = IPR_RC_JOB_CONTINUE;
8520 }
8521
8522 LEAVE;
8523 return rc;
8524 }
8525
8526 /**
8527 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8528 * @ipr_cmd: ipr command struct
8529 *
8530 * Description: This clears PCI reset to the adapter and delays two seconds.
8531 *
8532 * Return value:
8533 * IPR_RC_JOB_RETURN
8534 **/
8535 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8536 {
8537 ENTER;
8538 ipr_cmd->job_step = ipr_reset_bist_done;
8539 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8540 LEAVE;
8541 return IPR_RC_JOB_RETURN;
8542 }
8543
8544 /**
8545 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8546 * @work: work struct
8547 *
8548 * Description: This pulses warm reset to a slot.
8549 *
8550 **/
8551 static void ipr_reset_reset_work(struct work_struct *work)
8552 {
8553 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8554 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8555 struct pci_dev *pdev = ioa_cfg->pdev;
8556 unsigned long lock_flags = 0;
8557
8558 ENTER;
8559 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8560 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8561 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8562
8563 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8564 if (ioa_cfg->reset_cmd == ipr_cmd)
8565 ipr_reset_ioa_job(ipr_cmd);
8566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8567 LEAVE;
8568 }
8569
8570 /**
8571 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8572 * @ipr_cmd: ipr command struct
8573 *
8574 * Description: This asserts PCI reset to the adapter.
8575 *
8576 * Return value:
8577 * IPR_RC_JOB_RETURN
8578 **/
8579 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8580 {
8581 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8582
8583 ENTER;
8584 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8585 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8586 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8587 LEAVE;
8588 return IPR_RC_JOB_RETURN;
8589 }
8590
8591 /**
8592 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8593 * @ipr_cmd: ipr command struct
8594 *
8595 * Description: This attempts to block config access to the IOA.
8596 *
8597 * Return value:
8598 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8599 **/
8600 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8601 {
8602 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8603 int rc = IPR_RC_JOB_CONTINUE;
8604
8605 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8606 ioa_cfg->cfg_locked = 1;
8607 ipr_cmd->job_step = ioa_cfg->reset;
8608 } else {
8609 if (ipr_cmd->u.time_left) {
8610 rc = IPR_RC_JOB_RETURN;
8611 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8612 ipr_reset_start_timer(ipr_cmd,
8613 IPR_CHECK_FOR_RESET_TIMEOUT);
8614 } else {
8615 ipr_cmd->job_step = ioa_cfg->reset;
8616 dev_err(&ioa_cfg->pdev->dev,
8617 "Timed out waiting to lock config access. Resetting anyway.\n");
8618 }
8619 }
8620
8621 return rc;
8622 }
8623
8624 /**
8625 * ipr_reset_block_config_access - Block config access to the IOA
8626 * @ipr_cmd: ipr command struct
8627 *
8628 * Description: This attempts to block config access to the IOA
8629 *
8630 * Return value:
8631 * IPR_RC_JOB_CONTINUE
8632 **/
8633 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8634 {
8635 ipr_cmd->ioa_cfg->cfg_locked = 0;
8636 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8637 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8638 return IPR_RC_JOB_CONTINUE;
8639 }
8640
8641 /**
8642 * ipr_reset_allowed - Query whether or not IOA can be reset
8643 * @ioa_cfg: ioa config struct
8644 *
8645 * Return value:
8646 * 0 if reset not allowed / non-zero if reset is allowed
8647 **/
8648 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8649 {
8650 volatile u32 temp_reg;
8651
8652 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8653 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8654 }
8655
8656 /**
8657 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8658 * @ipr_cmd: ipr command struct
8659 *
8660 * Description: This function waits for adapter permission to run BIST,
8661 * then runs BIST. If the adapter does not give permission after a
8662 * reasonable time, we will reset the adapter anyway. The impact of
8663 * resetting the adapter without warning the adapter is the risk of
8664 * losing the persistent error log on the adapter. If the adapter is
8665 * reset while it is writing to the flash on the adapter, the flash
8666 * segment will have bad ECC and be zeroed.
8667 *
8668 * Return value:
8669 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8670 **/
8671 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8672 {
8673 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8674 int rc = IPR_RC_JOB_RETURN;
8675
8676 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8677 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8678 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8679 } else {
8680 ipr_cmd->job_step = ipr_reset_block_config_access;
8681 rc = IPR_RC_JOB_CONTINUE;
8682 }
8683
8684 return rc;
8685 }
8686
8687 /**
8688 * ipr_reset_alert - Alert the adapter of a pending reset
8689 * @ipr_cmd: ipr command struct
8690 *
8691 * Description: This function alerts the adapter that it will be reset.
8692 * If memory space is not currently enabled, proceed directly
8693 * to running BIST on the adapter. The timer must always be started
8694 * so we guarantee we do not run BIST from ipr_isr.
8695 *
8696 * Return value:
8697 * IPR_RC_JOB_RETURN
8698 **/
8699 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8700 {
8701 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8702 u16 cmd_reg;
8703 int rc;
8704
8705 ENTER;
8706 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8707
8708 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8709 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8710 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8711 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8712 } else {
8713 ipr_cmd->job_step = ipr_reset_block_config_access;
8714 }
8715
8716 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8717 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8718
8719 LEAVE;
8720 return IPR_RC_JOB_RETURN;
8721 }
8722
8723 /**
8724 * ipr_reset_quiesce_done - Complete IOA disconnect
8725 * @ipr_cmd: ipr command struct
8726 *
8727 * Description: Freeze the adapter to complete quiesce processing
8728 *
8729 * Return value:
8730 * IPR_RC_JOB_CONTINUE
8731 **/
8732 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8733 {
8734 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8735
8736 ENTER;
8737 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8738 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8739 LEAVE;
8740 return IPR_RC_JOB_CONTINUE;
8741 }
8742
8743 /**
8744 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8745 * @ipr_cmd: ipr command struct
8746 *
8747 * Description: Ensure nothing is outstanding to the IOA and
8748 * proceed with IOA disconnect. Otherwise reset the IOA.
8749 *
8750 * Return value:
8751 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8752 **/
8753 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8754 {
8755 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8756 struct ipr_cmnd *loop_cmd;
8757 struct ipr_hrr_queue *hrrq;
8758 int rc = IPR_RC_JOB_CONTINUE;
8759 int count = 0;
8760
8761 ENTER;
8762 ipr_cmd->job_step = ipr_reset_quiesce_done;
8763
8764 for_each_hrrq(hrrq, ioa_cfg) {
8765 spin_lock(&hrrq->_lock);
8766 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8767 count++;
8768 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8769 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8770 rc = IPR_RC_JOB_RETURN;
8771 break;
8772 }
8773 spin_unlock(&hrrq->_lock);
8774
8775 if (count)
8776 break;
8777 }
8778
8779 LEAVE;
8780 return rc;
8781 }
8782
8783 /**
8784 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8785 * @ipr_cmd: ipr command struct
8786 *
8787 * Description: Cancel any oustanding HCAMs to the IOA.
8788 *
8789 * Return value:
8790 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8791 **/
8792 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8793 {
8794 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8795 int rc = IPR_RC_JOB_CONTINUE;
8796 struct ipr_cmd_pkt *cmd_pkt;
8797 struct ipr_cmnd *hcam_cmd;
8798 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8799
8800 ENTER;
8801 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8802
8803 if (!hrrq->ioa_is_dead) {
8804 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8805 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8806 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8807 continue;
8808
8809 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8810 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8811 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8812 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8813 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8814 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8815 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8816 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8817 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8818 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8819 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8820 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8821 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8822 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8823
8824 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8825 IPR_CANCEL_TIMEOUT);
8826
8827 rc = IPR_RC_JOB_RETURN;
8828 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8829 break;
8830 }
8831 }
8832 } else
8833 ipr_cmd->job_step = ipr_reset_alert;
8834
8835 LEAVE;
8836 return rc;
8837 }
8838
8839 /**
8840 * ipr_reset_ucode_download_done - Microcode download completion
8841 * @ipr_cmd: ipr command struct
8842 *
8843 * Description: This function unmaps the microcode download buffer.
8844 *
8845 * Return value:
8846 * IPR_RC_JOB_CONTINUE
8847 **/
8848 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8849 {
8850 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8851 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8852
8853 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8854 sglist->num_sg, DMA_TO_DEVICE);
8855
8856 ipr_cmd->job_step = ipr_reset_alert;
8857 return IPR_RC_JOB_CONTINUE;
8858 }
8859
8860 /**
8861 * ipr_reset_ucode_download - Download microcode to the adapter
8862 * @ipr_cmd: ipr command struct
8863 *
8864 * Description: This function checks to see if it there is microcode
8865 * to download to the adapter. If there is, a download is performed.
8866 *
8867 * Return value:
8868 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8869 **/
8870 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8871 {
8872 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8873 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8874
8875 ENTER;
8876 ipr_cmd->job_step = ipr_reset_alert;
8877
8878 if (!sglist)
8879 return IPR_RC_JOB_CONTINUE;
8880
8881 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8882 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8883 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8884 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8885 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8886 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8887 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8888
8889 if (ioa_cfg->sis64)
8890 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8891 else
8892 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8893 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8894
8895 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8896 IPR_WRITE_BUFFER_TIMEOUT);
8897
8898 LEAVE;
8899 return IPR_RC_JOB_RETURN;
8900 }
8901
8902 /**
8903 * ipr_reset_shutdown_ioa - Shutdown the adapter
8904 * @ipr_cmd: ipr command struct
8905 *
8906 * Description: This function issues an adapter shutdown of the
8907 * specified type to the specified adapter as part of the
8908 * adapter reset job.
8909 *
8910 * Return value:
8911 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8912 **/
8913 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8914 {
8915 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8916 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8917 unsigned long timeout;
8918 int rc = IPR_RC_JOB_CONTINUE;
8919
8920 ENTER;
8921 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8922 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8923 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8924 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8925 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8926 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8927 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8928 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8929
8930 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8931 timeout = IPR_SHUTDOWN_TIMEOUT;
8932 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8933 timeout = IPR_INTERNAL_TIMEOUT;
8934 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8935 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8936 else
8937 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8938
8939 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8940
8941 rc = IPR_RC_JOB_RETURN;
8942 ipr_cmd->job_step = ipr_reset_ucode_download;
8943 } else
8944 ipr_cmd->job_step = ipr_reset_alert;
8945
8946 LEAVE;
8947 return rc;
8948 }
8949
8950 /**
8951 * ipr_reset_ioa_job - Adapter reset job
8952 * @ipr_cmd: ipr command struct
8953 *
8954 * Description: This function is the job router for the adapter reset job.
8955 *
8956 * Return value:
8957 * none
8958 **/
8959 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8960 {
8961 u32 rc, ioasc;
8962 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8963
8964 do {
8965 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8966
8967 if (ioa_cfg->reset_cmd != ipr_cmd) {
8968 /*
8969 * We are doing nested adapter resets and this is
8970 * not the current reset job.
8971 */
8972 list_add_tail(&ipr_cmd->queue,
8973 &ipr_cmd->hrrq->hrrq_free_q);
8974 return;
8975 }
8976
8977 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8978 rc = ipr_cmd->job_step_failed(ipr_cmd);
8979 if (rc == IPR_RC_JOB_RETURN)
8980 return;
8981 }
8982
8983 ipr_reinit_ipr_cmnd(ipr_cmd);
8984 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8985 rc = ipr_cmd->job_step(ipr_cmd);
8986 } while (rc == IPR_RC_JOB_CONTINUE);
8987 }
8988
8989 /**
8990 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8991 * @ioa_cfg: ioa config struct
8992 * @job_step: first job step of reset job
8993 * @shutdown_type: shutdown type
8994 *
8995 * Description: This function will initiate the reset of the given adapter
8996 * starting at the selected job step.
8997 * If the caller needs to wait on the completion of the reset,
8998 * the caller must sleep on the reset_wait_q.
8999 *
9000 * Return value:
9001 * none
9002 **/
9003 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9004 int (*job_step) (struct ipr_cmnd *),
9005 enum ipr_shutdown_type shutdown_type)
9006 {
9007 struct ipr_cmnd *ipr_cmd;
9008 int i;
9009
9010 ioa_cfg->in_reset_reload = 1;
9011 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9012 spin_lock(&ioa_cfg->hrrq[i]._lock);
9013 ioa_cfg->hrrq[i].allow_cmds = 0;
9014 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9015 }
9016 wmb();
9017 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
9018 scsi_block_requests(ioa_cfg->host);
9019
9020 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9021 ioa_cfg->reset_cmd = ipr_cmd;
9022 ipr_cmd->job_step = job_step;
9023 ipr_cmd->u.shutdown_type = shutdown_type;
9024
9025 ipr_reset_ioa_job(ipr_cmd);
9026 }
9027
9028 /**
9029 * ipr_initiate_ioa_reset - Initiate an adapter reset
9030 * @ioa_cfg: ioa config struct
9031 * @shutdown_type: shutdown type
9032 *
9033 * Description: This function will initiate the reset of the given adapter.
9034 * If the caller needs to wait on the completion of the reset,
9035 * the caller must sleep on the reset_wait_q.
9036 *
9037 * Return value:
9038 * none
9039 **/
9040 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9041 enum ipr_shutdown_type shutdown_type)
9042 {
9043 int i;
9044
9045 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9046 return;
9047
9048 if (ioa_cfg->in_reset_reload) {
9049 if (ioa_cfg->sdt_state == GET_DUMP)
9050 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9051 else if (ioa_cfg->sdt_state == READ_DUMP)
9052 ioa_cfg->sdt_state = ABORT_DUMP;
9053 }
9054
9055 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9056 dev_err(&ioa_cfg->pdev->dev,
9057 "IOA taken offline - error recovery failed\n");
9058
9059 ioa_cfg->reset_retries = 0;
9060 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9061 spin_lock(&ioa_cfg->hrrq[i]._lock);
9062 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9063 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9064 }
9065 wmb();
9066
9067 if (ioa_cfg->in_ioa_bringdown) {
9068 ioa_cfg->reset_cmd = NULL;
9069 ioa_cfg->in_reset_reload = 0;
9070 ipr_fail_all_ops(ioa_cfg);
9071 wake_up_all(&ioa_cfg->reset_wait_q);
9072
9073 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9074 spin_unlock_irq(ioa_cfg->host->host_lock);
9075 scsi_unblock_requests(ioa_cfg->host);
9076 spin_lock_irq(ioa_cfg->host->host_lock);
9077 }
9078 return;
9079 } else {
9080 ioa_cfg->in_ioa_bringdown = 1;
9081 shutdown_type = IPR_SHUTDOWN_NONE;
9082 }
9083 }
9084
9085 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9086 shutdown_type);
9087 }
9088
9089 /**
9090 * ipr_reset_freeze - Hold off all I/O activity
9091 * @ipr_cmd: ipr command struct
9092 *
9093 * Description: If the PCI slot is frozen, hold off all I/O
9094 * activity; then, as soon as the slot is available again,
9095 * initiate an adapter reset.
9096 */
9097 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9098 {
9099 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9100 int i;
9101
9102 /* Disallow new interrupts, avoid loop */
9103 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9104 spin_lock(&ioa_cfg->hrrq[i]._lock);
9105 ioa_cfg->hrrq[i].allow_interrupts = 0;
9106 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9107 }
9108 wmb();
9109 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9110 ipr_cmd->done = ipr_reset_ioa_job;
9111 return IPR_RC_JOB_RETURN;
9112 }
9113
9114 /**
9115 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9116 * @pdev: PCI device struct
9117 *
9118 * Description: This routine is called to tell us that the MMIO
9119 * access to the IOA has been restored
9120 */
9121 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9122 {
9123 unsigned long flags = 0;
9124 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9125
9126 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9127 if (!ioa_cfg->probe_done)
9128 pci_save_state(pdev);
9129 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9130 return PCI_ERS_RESULT_NEED_RESET;
9131 }
9132
9133 /**
9134 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9135 * @pdev: PCI device struct
9136 *
9137 * Description: This routine is called to tell us that the PCI bus
9138 * is down. Can't do anything here, except put the device driver
9139 * into a holding pattern, waiting for the PCI bus to come back.
9140 */
9141 static void ipr_pci_frozen(struct pci_dev *pdev)
9142 {
9143 unsigned long flags = 0;
9144 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9145
9146 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9147 if (ioa_cfg->probe_done)
9148 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9150 }
9151
9152 /**
9153 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9154 * @pdev: PCI device struct
9155 *
9156 * Description: This routine is called by the pci error recovery
9157 * code after the PCI slot has been reset, just before we
9158 * should resume normal operations.
9159 */
9160 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9161 {
9162 unsigned long flags = 0;
9163 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9164
9165 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9166 if (ioa_cfg->probe_done) {
9167 if (ioa_cfg->needs_warm_reset)
9168 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9169 else
9170 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9171 IPR_SHUTDOWN_NONE);
9172 } else
9173 wake_up_all(&ioa_cfg->eeh_wait_q);
9174 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9175 return PCI_ERS_RESULT_RECOVERED;
9176 }
9177
9178 /**
9179 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9180 * @pdev: PCI device struct
9181 *
9182 * Description: This routine is called when the PCI bus has
9183 * permanently failed.
9184 */
9185 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9186 {
9187 unsigned long flags = 0;
9188 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9189 int i;
9190
9191 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9192 if (ioa_cfg->probe_done) {
9193 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9194 ioa_cfg->sdt_state = ABORT_DUMP;
9195 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9196 ioa_cfg->in_ioa_bringdown = 1;
9197 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9198 spin_lock(&ioa_cfg->hrrq[i]._lock);
9199 ioa_cfg->hrrq[i].allow_cmds = 0;
9200 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9201 }
9202 wmb();
9203 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9204 } else
9205 wake_up_all(&ioa_cfg->eeh_wait_q);
9206 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9207 }
9208
9209 /**
9210 * ipr_pci_error_detected - Called when a PCI error is detected.
9211 * @pdev: PCI device struct
9212 * @state: PCI channel state
9213 *
9214 * Description: Called when a PCI error is detected.
9215 *
9216 * Return value:
9217 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9218 */
9219 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9220 pci_channel_state_t state)
9221 {
9222 switch (state) {
9223 case pci_channel_io_frozen:
9224 ipr_pci_frozen(pdev);
9225 return PCI_ERS_RESULT_CAN_RECOVER;
9226 case pci_channel_io_perm_failure:
9227 ipr_pci_perm_failure(pdev);
9228 return PCI_ERS_RESULT_DISCONNECT;
9229 break;
9230 default:
9231 break;
9232 }
9233 return PCI_ERS_RESULT_NEED_RESET;
9234 }
9235
9236 /**
9237 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9238 * @ioa_cfg: ioa cfg struct
9239 *
9240 * Description: This is the second phase of adapter intialization
9241 * This function takes care of initilizing the adapter to the point
9242 * where it can accept new commands.
9243
9244 * Return value:
9245 * 0 on success / -EIO on failure
9246 **/
9247 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9248 {
9249 int rc = 0;
9250 unsigned long host_lock_flags = 0;
9251
9252 ENTER;
9253 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9254 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9255 ioa_cfg->probe_done = 1;
9256 if (ioa_cfg->needs_hard_reset) {
9257 ioa_cfg->needs_hard_reset = 0;
9258 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9259 } else
9260 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9261 IPR_SHUTDOWN_NONE);
9262 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9263
9264 LEAVE;
9265 return rc;
9266 }
9267
9268 /**
9269 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9270 * @ioa_cfg: ioa config struct
9271 *
9272 * Return value:
9273 * none
9274 **/
9275 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9276 {
9277 int i;
9278
9279 if (ioa_cfg->ipr_cmnd_list) {
9280 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9281 if (ioa_cfg->ipr_cmnd_list[i])
9282 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9283 ioa_cfg->ipr_cmnd_list[i],
9284 ioa_cfg->ipr_cmnd_list_dma[i]);
9285
9286 ioa_cfg->ipr_cmnd_list[i] = NULL;
9287 }
9288 }
9289
9290 if (ioa_cfg->ipr_cmd_pool)
9291 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9292
9293 kfree(ioa_cfg->ipr_cmnd_list);
9294 kfree(ioa_cfg->ipr_cmnd_list_dma);
9295 ioa_cfg->ipr_cmnd_list = NULL;
9296 ioa_cfg->ipr_cmnd_list_dma = NULL;
9297 ioa_cfg->ipr_cmd_pool = NULL;
9298 }
9299
9300 /**
9301 * ipr_free_mem - Frees memory allocated for an adapter
9302 * @ioa_cfg: ioa cfg struct
9303 *
9304 * Return value:
9305 * nothing
9306 **/
9307 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9308 {
9309 int i;
9310
9311 kfree(ioa_cfg->res_entries);
9312 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9313 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9314 ipr_free_cmd_blks(ioa_cfg);
9315
9316 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9317 dma_free_coherent(&ioa_cfg->pdev->dev,
9318 sizeof(u32) * ioa_cfg->hrrq[i].size,
9319 ioa_cfg->hrrq[i].host_rrq,
9320 ioa_cfg->hrrq[i].host_rrq_dma);
9321
9322 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9323 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9324
9325 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9326 dma_free_coherent(&ioa_cfg->pdev->dev,
9327 sizeof(struct ipr_hostrcb),
9328 ioa_cfg->hostrcb[i],
9329 ioa_cfg->hostrcb_dma[i]);
9330 }
9331
9332 ipr_free_dump(ioa_cfg);
9333 kfree(ioa_cfg->trace);
9334 }
9335
9336 /**
9337 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9338 * @ioa_cfg: ipr cfg struct
9339 *
9340 * This function frees all allocated IRQs for the
9341 * specified adapter.
9342 *
9343 * Return value:
9344 * none
9345 **/
9346 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9347 {
9348 struct pci_dev *pdev = ioa_cfg->pdev;
9349
9350 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9351 ioa_cfg->intr_flag == IPR_USE_MSIX) {
9352 int i;
9353 for (i = 0; i < ioa_cfg->nvectors; i++)
9354 free_irq(ioa_cfg->vectors_info[i].vec,
9355 &ioa_cfg->hrrq[i]);
9356 } else
9357 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
9358
9359 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9360 pci_disable_msi(pdev);
9361 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9362 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9363 pci_disable_msix(pdev);
9364 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9365 }
9366 }
9367
9368 /**
9369 * ipr_free_all_resources - Free all allocated resources for an adapter.
9370 * @ipr_cmd: ipr command struct
9371 *
9372 * This function frees all allocated resources for the
9373 * specified adapter.
9374 *
9375 * Return value:
9376 * none
9377 **/
9378 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9379 {
9380 struct pci_dev *pdev = ioa_cfg->pdev;
9381
9382 ENTER;
9383 ipr_free_irqs(ioa_cfg);
9384 if (ioa_cfg->reset_work_q)
9385 destroy_workqueue(ioa_cfg->reset_work_q);
9386 iounmap(ioa_cfg->hdw_dma_regs);
9387 pci_release_regions(pdev);
9388 ipr_free_mem(ioa_cfg);
9389 scsi_host_put(ioa_cfg->host);
9390 pci_disable_device(pdev);
9391 LEAVE;
9392 }
9393
9394 /**
9395 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9396 * @ioa_cfg: ioa config struct
9397 *
9398 * Return value:
9399 * 0 on success / -ENOMEM on allocation failure
9400 **/
9401 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9402 {
9403 struct ipr_cmnd *ipr_cmd;
9404 struct ipr_ioarcb *ioarcb;
9405 dma_addr_t dma_addr;
9406 int i, entries_each_hrrq, hrrq_id = 0;
9407
9408 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9409 sizeof(struct ipr_cmnd), 512, 0);
9410
9411 if (!ioa_cfg->ipr_cmd_pool)
9412 return -ENOMEM;
9413
9414 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9415 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9416
9417 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9418 ipr_free_cmd_blks(ioa_cfg);
9419 return -ENOMEM;
9420 }
9421
9422 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9423 if (ioa_cfg->hrrq_num > 1) {
9424 if (i == 0) {
9425 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9426 ioa_cfg->hrrq[i].min_cmd_id = 0;
9427 ioa_cfg->hrrq[i].max_cmd_id =
9428 (entries_each_hrrq - 1);
9429 } else {
9430 entries_each_hrrq =
9431 IPR_NUM_BASE_CMD_BLKS/
9432 (ioa_cfg->hrrq_num - 1);
9433 ioa_cfg->hrrq[i].min_cmd_id =
9434 IPR_NUM_INTERNAL_CMD_BLKS +
9435 (i - 1) * entries_each_hrrq;
9436 ioa_cfg->hrrq[i].max_cmd_id =
9437 (IPR_NUM_INTERNAL_CMD_BLKS +
9438 i * entries_each_hrrq - 1);
9439 }
9440 } else {
9441 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9442 ioa_cfg->hrrq[i].min_cmd_id = 0;
9443 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9444 }
9445 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9446 }
9447
9448 BUG_ON(ioa_cfg->hrrq_num == 0);
9449
9450 i = IPR_NUM_CMD_BLKS -
9451 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9452 if (i > 0) {
9453 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9454 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9455 }
9456
9457 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9458 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9459
9460 if (!ipr_cmd) {
9461 ipr_free_cmd_blks(ioa_cfg);
9462 return -ENOMEM;
9463 }
9464
9465 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9466 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9467 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9468
9469 ioarcb = &ipr_cmd->ioarcb;
9470 ipr_cmd->dma_addr = dma_addr;
9471 if (ioa_cfg->sis64)
9472 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9473 else
9474 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9475
9476 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9477 if (ioa_cfg->sis64) {
9478 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9479 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9480 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9481 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9482 } else {
9483 ioarcb->write_ioadl_addr =
9484 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9485 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9486 ioarcb->ioasa_host_pci_addr =
9487 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9488 }
9489 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9490 ipr_cmd->cmd_index = i;
9491 ipr_cmd->ioa_cfg = ioa_cfg;
9492 ipr_cmd->sense_buffer_dma = dma_addr +
9493 offsetof(struct ipr_cmnd, sense_buffer);
9494
9495 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9496 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9497 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9498 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9499 hrrq_id++;
9500 }
9501
9502 return 0;
9503 }
9504
9505 /**
9506 * ipr_alloc_mem - Allocate memory for an adapter
9507 * @ioa_cfg: ioa config struct
9508 *
9509 * Return value:
9510 * 0 on success / non-zero for error
9511 **/
9512 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9513 {
9514 struct pci_dev *pdev = ioa_cfg->pdev;
9515 int i, rc = -ENOMEM;
9516
9517 ENTER;
9518 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9519 ioa_cfg->max_devs_supported, GFP_KERNEL);
9520
9521 if (!ioa_cfg->res_entries)
9522 goto out;
9523
9524 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9525 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9526 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9527 }
9528
9529 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9530 sizeof(struct ipr_misc_cbs),
9531 &ioa_cfg->vpd_cbs_dma,
9532 GFP_KERNEL);
9533
9534 if (!ioa_cfg->vpd_cbs)
9535 goto out_free_res_entries;
9536
9537 if (ipr_alloc_cmd_blks(ioa_cfg))
9538 goto out_free_vpd_cbs;
9539
9540 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9541 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9542 sizeof(u32) * ioa_cfg->hrrq[i].size,
9543 &ioa_cfg->hrrq[i].host_rrq_dma,
9544 GFP_KERNEL);
9545
9546 if (!ioa_cfg->hrrq[i].host_rrq) {
9547 while (--i > 0)
9548 dma_free_coherent(&pdev->dev,
9549 sizeof(u32) * ioa_cfg->hrrq[i].size,
9550 ioa_cfg->hrrq[i].host_rrq,
9551 ioa_cfg->hrrq[i].host_rrq_dma);
9552 goto out_ipr_free_cmd_blocks;
9553 }
9554 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9555 }
9556
9557 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9558 ioa_cfg->cfg_table_size,
9559 &ioa_cfg->cfg_table_dma,
9560 GFP_KERNEL);
9561
9562 if (!ioa_cfg->u.cfg_table)
9563 goto out_free_host_rrq;
9564
9565 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9566 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9567 sizeof(struct ipr_hostrcb),
9568 &ioa_cfg->hostrcb_dma[i],
9569 GFP_KERNEL);
9570
9571 if (!ioa_cfg->hostrcb[i])
9572 goto out_free_hostrcb_dma;
9573
9574 ioa_cfg->hostrcb[i]->hostrcb_dma =
9575 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9576 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9577 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9578 }
9579
9580 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9581 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9582
9583 if (!ioa_cfg->trace)
9584 goto out_free_hostrcb_dma;
9585
9586 rc = 0;
9587 out:
9588 LEAVE;
9589 return rc;
9590
9591 out_free_hostrcb_dma:
9592 while (i-- > 0) {
9593 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9594 ioa_cfg->hostrcb[i],
9595 ioa_cfg->hostrcb_dma[i]);
9596 }
9597 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9598 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9599 out_free_host_rrq:
9600 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9601 dma_free_coherent(&pdev->dev,
9602 sizeof(u32) * ioa_cfg->hrrq[i].size,
9603 ioa_cfg->hrrq[i].host_rrq,
9604 ioa_cfg->hrrq[i].host_rrq_dma);
9605 }
9606 out_ipr_free_cmd_blocks:
9607 ipr_free_cmd_blks(ioa_cfg);
9608 out_free_vpd_cbs:
9609 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9610 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9611 out_free_res_entries:
9612 kfree(ioa_cfg->res_entries);
9613 goto out;
9614 }
9615
9616 /**
9617 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9618 * @ioa_cfg: ioa config struct
9619 *
9620 * Return value:
9621 * none
9622 **/
9623 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9624 {
9625 int i;
9626
9627 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9628 ioa_cfg->bus_attr[i].bus = i;
9629 ioa_cfg->bus_attr[i].qas_enabled = 0;
9630 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9631 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9632 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9633 else
9634 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9635 }
9636 }
9637
9638 /**
9639 * ipr_init_regs - Initialize IOA registers
9640 * @ioa_cfg: ioa config struct
9641 *
9642 * Return value:
9643 * none
9644 **/
9645 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9646 {
9647 const struct ipr_interrupt_offsets *p;
9648 struct ipr_interrupts *t;
9649 void __iomem *base;
9650
9651 p = &ioa_cfg->chip_cfg->regs;
9652 t = &ioa_cfg->regs;
9653 base = ioa_cfg->hdw_dma_regs;
9654
9655 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9656 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9657 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9658 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9659 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9660 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9661 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9662 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9663 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9664 t->ioarrin_reg = base + p->ioarrin_reg;
9665 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9666 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9667 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9668 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9669 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9670 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9671
9672 if (ioa_cfg->sis64) {
9673 t->init_feedback_reg = base + p->init_feedback_reg;
9674 t->dump_addr_reg = base + p->dump_addr_reg;
9675 t->dump_data_reg = base + p->dump_data_reg;
9676 t->endian_swap_reg = base + p->endian_swap_reg;
9677 }
9678 }
9679
9680 /**
9681 * ipr_init_ioa_cfg - Initialize IOA config struct
9682 * @ioa_cfg: ioa config struct
9683 * @host: scsi host struct
9684 * @pdev: PCI dev struct
9685 *
9686 * Return value:
9687 * none
9688 **/
9689 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9690 struct Scsi_Host *host, struct pci_dev *pdev)
9691 {
9692 int i;
9693
9694 ioa_cfg->host = host;
9695 ioa_cfg->pdev = pdev;
9696 ioa_cfg->log_level = ipr_log_level;
9697 ioa_cfg->doorbell = IPR_DOORBELL;
9698 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9699 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9700 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9701 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9702 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9703 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9704
9705 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9706 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9707 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9708 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9709 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9710 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9711 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9712 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9713 ioa_cfg->sdt_state = INACTIVE;
9714
9715 ipr_initialize_bus_attr(ioa_cfg);
9716 ioa_cfg->max_devs_supported = ipr_max_devs;
9717
9718 if (ioa_cfg->sis64) {
9719 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9720 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9721 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9722 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9723 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9724 + ((sizeof(struct ipr_config_table_entry64)
9725 * ioa_cfg->max_devs_supported)));
9726 } else {
9727 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9728 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9729 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9730 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9731 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9732 + ((sizeof(struct ipr_config_table_entry)
9733 * ioa_cfg->max_devs_supported)));
9734 }
9735
9736 host->max_channel = IPR_VSET_BUS;
9737 host->unique_id = host->host_no;
9738 host->max_cmd_len = IPR_MAX_CDB_LEN;
9739 host->can_queue = ioa_cfg->max_cmds;
9740 pci_set_drvdata(pdev, ioa_cfg);
9741
9742 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9743 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9744 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9745 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9746 if (i == 0)
9747 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9748 else
9749 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9750 }
9751 }
9752
9753 /**
9754 * ipr_get_chip_info - Find adapter chip information
9755 * @dev_id: PCI device id struct
9756 *
9757 * Return value:
9758 * ptr to chip information on success / NULL on failure
9759 **/
9760 static const struct ipr_chip_t *
9761 ipr_get_chip_info(const struct pci_device_id *dev_id)
9762 {
9763 int i;
9764
9765 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9766 if (ipr_chip[i].vendor == dev_id->vendor &&
9767 ipr_chip[i].device == dev_id->device)
9768 return &ipr_chip[i];
9769 return NULL;
9770 }
9771
9772 /**
9773 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9774 * during probe time
9775 * @ioa_cfg: ioa config struct
9776 *
9777 * Return value:
9778 * None
9779 **/
9780 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9781 {
9782 struct pci_dev *pdev = ioa_cfg->pdev;
9783
9784 if (pci_channel_offline(pdev)) {
9785 wait_event_timeout(ioa_cfg->eeh_wait_q,
9786 !pci_channel_offline(pdev),
9787 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9788 pci_restore_state(pdev);
9789 }
9790 }
9791
9792 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9793 {
9794 struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9795 int i, vectors;
9796
9797 for (i = 0; i < ARRAY_SIZE(entries); ++i)
9798 entries[i].entry = i;
9799
9800 vectors = pci_enable_msix_range(ioa_cfg->pdev,
9801 entries, 1, ipr_number_of_msix);
9802 if (vectors < 0) {
9803 ipr_wait_for_pci_err_recovery(ioa_cfg);
9804 return vectors;
9805 }
9806
9807 for (i = 0; i < vectors; i++)
9808 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9809 ioa_cfg->nvectors = vectors;
9810
9811 return 0;
9812 }
9813
9814 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9815 {
9816 int i, vectors;
9817
9818 vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9819 if (vectors < 0) {
9820 ipr_wait_for_pci_err_recovery(ioa_cfg);
9821 return vectors;
9822 }
9823
9824 for (i = 0; i < vectors; i++)
9825 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9826 ioa_cfg->nvectors = vectors;
9827
9828 return 0;
9829 }
9830
9831 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9832 {
9833 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9834
9835 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9836 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9837 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9838 ioa_cfg->vectors_info[vec_idx].
9839 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9840 }
9841 }
9842
9843 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9844 {
9845 int i, rc;
9846
9847 for (i = 1; i < ioa_cfg->nvectors; i++) {
9848 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9849 ipr_isr_mhrrq,
9850 0,
9851 ioa_cfg->vectors_info[i].desc,
9852 &ioa_cfg->hrrq[i]);
9853 if (rc) {
9854 while (--i >= 0)
9855 free_irq(ioa_cfg->vectors_info[i].vec,
9856 &ioa_cfg->hrrq[i]);
9857 return rc;
9858 }
9859 }
9860 return 0;
9861 }
9862
9863 /**
9864 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9865 * @pdev: PCI device struct
9866 *
9867 * Description: Simply set the msi_received flag to 1 indicating that
9868 * Message Signaled Interrupts are supported.
9869 *
9870 * Return value:
9871 * 0 on success / non-zero on failure
9872 **/
9873 static irqreturn_t ipr_test_intr(int irq, void *devp)
9874 {
9875 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9876 unsigned long lock_flags = 0;
9877 irqreturn_t rc = IRQ_HANDLED;
9878
9879 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9880 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9881
9882 ioa_cfg->msi_received = 1;
9883 wake_up(&ioa_cfg->msi_wait_q);
9884
9885 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9886 return rc;
9887 }
9888
9889 /**
9890 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9891 * @pdev: PCI device struct
9892 *
9893 * Description: The return value from pci_enable_msi_range() can not always be
9894 * trusted. This routine sets up and initiates a test interrupt to determine
9895 * if the interrupt is received via the ipr_test_intr() service routine.
9896 * If the tests fails, the driver will fall back to LSI.
9897 *
9898 * Return value:
9899 * 0 on success / non-zero on failure
9900 **/
9901 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9902 {
9903 int rc;
9904 volatile u32 int_reg;
9905 unsigned long lock_flags = 0;
9906
9907 ENTER;
9908
9909 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9910 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9911 ioa_cfg->msi_received = 0;
9912 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9913 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9914 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9915 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9916
9917 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9918 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9919 else
9920 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9921 if (rc) {
9922 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9923 return rc;
9924 } else if (ipr_debug)
9925 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9926
9927 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9928 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9929 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9930 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9931 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9932
9933 if (!ioa_cfg->msi_received) {
9934 /* MSI test failed */
9935 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9936 rc = -EOPNOTSUPP;
9937 } else if (ipr_debug)
9938 dev_info(&pdev->dev, "MSI test succeeded.\n");
9939
9940 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9941
9942 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9943 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9944 else
9945 free_irq(pdev->irq, ioa_cfg);
9946
9947 LEAVE;
9948
9949 return rc;
9950 }
9951
9952 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9953 * @pdev: PCI device struct
9954 * @dev_id: PCI device id struct
9955 *
9956 * Return value:
9957 * 0 on success / non-zero on failure
9958 **/
9959 static int ipr_probe_ioa(struct pci_dev *pdev,
9960 const struct pci_device_id *dev_id)
9961 {
9962 struct ipr_ioa_cfg *ioa_cfg;
9963 struct Scsi_Host *host;
9964 unsigned long ipr_regs_pci;
9965 void __iomem *ipr_regs;
9966 int rc = PCIBIOS_SUCCESSFUL;
9967 volatile u32 mask, uproc, interrupts;
9968 unsigned long lock_flags, driver_lock_flags;
9969
9970 ENTER;
9971
9972 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9973 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9974
9975 if (!host) {
9976 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9977 rc = -ENOMEM;
9978 goto out;
9979 }
9980
9981 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9982 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9983 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9984
9985 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9986
9987 if (!ioa_cfg->ipr_chip) {
9988 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9989 dev_id->vendor, dev_id->device);
9990 goto out_scsi_host_put;
9991 }
9992
9993 /* set SIS 32 or SIS 64 */
9994 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9995 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
9996 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
9997 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
9998
9999 if (ipr_transop_timeout)
10000 ioa_cfg->transop_timeout = ipr_transop_timeout;
10001 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10002 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10003 else
10004 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10005
10006 ioa_cfg->revid = pdev->revision;
10007
10008 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10009
10010 ipr_regs_pci = pci_resource_start(pdev, 0);
10011
10012 rc = pci_request_regions(pdev, IPR_NAME);
10013 if (rc < 0) {
10014 dev_err(&pdev->dev,
10015 "Couldn't register memory range of registers\n");
10016 goto out_scsi_host_put;
10017 }
10018
10019 rc = pci_enable_device(pdev);
10020
10021 if (rc || pci_channel_offline(pdev)) {
10022 if (pci_channel_offline(pdev)) {
10023 ipr_wait_for_pci_err_recovery(ioa_cfg);
10024 rc = pci_enable_device(pdev);
10025 }
10026
10027 if (rc) {
10028 dev_err(&pdev->dev, "Cannot enable adapter\n");
10029 ipr_wait_for_pci_err_recovery(ioa_cfg);
10030 goto out_release_regions;
10031 }
10032 }
10033
10034 ipr_regs = pci_ioremap_bar(pdev, 0);
10035
10036 if (!ipr_regs) {
10037 dev_err(&pdev->dev,
10038 "Couldn't map memory range of registers\n");
10039 rc = -ENOMEM;
10040 goto out_disable;
10041 }
10042
10043 ioa_cfg->hdw_dma_regs = ipr_regs;
10044 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10045 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10046
10047 ipr_init_regs(ioa_cfg);
10048
10049 if (ioa_cfg->sis64) {
10050 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10051 if (rc < 0) {
10052 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10053 rc = dma_set_mask_and_coherent(&pdev->dev,
10054 DMA_BIT_MASK(32));
10055 }
10056 } else
10057 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10058
10059 if (rc < 0) {
10060 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10061 goto cleanup_nomem;
10062 }
10063
10064 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10065 ioa_cfg->chip_cfg->cache_line_size);
10066
10067 if (rc != PCIBIOS_SUCCESSFUL) {
10068 dev_err(&pdev->dev, "Write of cache line size failed\n");
10069 ipr_wait_for_pci_err_recovery(ioa_cfg);
10070 rc = -EIO;
10071 goto cleanup_nomem;
10072 }
10073
10074 /* Issue MMIO read to ensure card is not in EEH */
10075 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10076 ipr_wait_for_pci_err_recovery(ioa_cfg);
10077
10078 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10079 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10080 IPR_MAX_MSIX_VECTORS);
10081 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10082 }
10083
10084 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10085 ipr_enable_msix(ioa_cfg) == 0)
10086 ioa_cfg->intr_flag = IPR_USE_MSIX;
10087 else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10088 ipr_enable_msi(ioa_cfg) == 0)
10089 ioa_cfg->intr_flag = IPR_USE_MSI;
10090 else {
10091 ioa_cfg->intr_flag = IPR_USE_LSI;
10092 ioa_cfg->nvectors = 1;
10093 dev_info(&pdev->dev, "Cannot enable MSI.\n");
10094 }
10095
10096 pci_set_master(pdev);
10097
10098 if (pci_channel_offline(pdev)) {
10099 ipr_wait_for_pci_err_recovery(ioa_cfg);
10100 pci_set_master(pdev);
10101 if (pci_channel_offline(pdev)) {
10102 rc = -EIO;
10103 goto out_msi_disable;
10104 }
10105 }
10106
10107 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
10108 ioa_cfg->intr_flag == IPR_USE_MSIX) {
10109 rc = ipr_test_msi(ioa_cfg, pdev);
10110 if (rc == -EOPNOTSUPP) {
10111 ipr_wait_for_pci_err_recovery(ioa_cfg);
10112 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
10113 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
10114 pci_disable_msi(pdev);
10115 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
10116 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
10117 pci_disable_msix(pdev);
10118 }
10119
10120 ioa_cfg->intr_flag = IPR_USE_LSI;
10121 ioa_cfg->nvectors = 1;
10122 }
10123 else if (rc)
10124 goto out_msi_disable;
10125 else {
10126 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10127 dev_info(&pdev->dev,
10128 "Request for %d MSIs succeeded with starting IRQ: %d\n",
10129 ioa_cfg->nvectors, pdev->irq);
10130 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10131 dev_info(&pdev->dev,
10132 "Request for %d MSIXs succeeded.",
10133 ioa_cfg->nvectors);
10134 }
10135 }
10136
10137 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10138 (unsigned int)num_online_cpus(),
10139 (unsigned int)IPR_MAX_HRRQ_NUM);
10140
10141 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10142 goto out_msi_disable;
10143
10144 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10145 goto out_msi_disable;
10146
10147 rc = ipr_alloc_mem(ioa_cfg);
10148 if (rc < 0) {
10149 dev_err(&pdev->dev,
10150 "Couldn't allocate enough memory for device driver!\n");
10151 goto out_msi_disable;
10152 }
10153
10154 /* Save away PCI config space for use following IOA reset */
10155 rc = pci_save_state(pdev);
10156
10157 if (rc != PCIBIOS_SUCCESSFUL) {
10158 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10159 rc = -EIO;
10160 goto cleanup_nolog;
10161 }
10162
10163 /*
10164 * If HRRQ updated interrupt is not masked, or reset alert is set,
10165 * the card is in an unknown state and needs a hard reset
10166 */
10167 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10168 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10169 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10170 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10171 ioa_cfg->needs_hard_reset = 1;
10172 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10173 ioa_cfg->needs_hard_reset = 1;
10174 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10175 ioa_cfg->ioa_unit_checked = 1;
10176
10177 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10178 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10179 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10180
10181 if (ioa_cfg->intr_flag == IPR_USE_MSI
10182 || ioa_cfg->intr_flag == IPR_USE_MSIX) {
10183 name_msi_vectors(ioa_cfg);
10184 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
10185 0,
10186 ioa_cfg->vectors_info[0].desc,
10187 &ioa_cfg->hrrq[0]);
10188 if (!rc)
10189 rc = ipr_request_other_msi_irqs(ioa_cfg);
10190 } else {
10191 rc = request_irq(pdev->irq, ipr_isr,
10192 IRQF_SHARED,
10193 IPR_NAME, &ioa_cfg->hrrq[0]);
10194 }
10195 if (rc) {
10196 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10197 pdev->irq, rc);
10198 goto cleanup_nolog;
10199 }
10200
10201 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10202 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10203 ioa_cfg->needs_warm_reset = 1;
10204 ioa_cfg->reset = ipr_reset_slot_reset;
10205
10206 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10207 WQ_MEM_RECLAIM, host->host_no);
10208
10209 if (!ioa_cfg->reset_work_q) {
10210 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10211 goto out_free_irq;
10212 }
10213 } else
10214 ioa_cfg->reset = ipr_reset_start_bist;
10215
10216 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10217 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10218 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10219
10220 LEAVE;
10221 out:
10222 return rc;
10223
10224 out_free_irq:
10225 ipr_free_irqs(ioa_cfg);
10226 cleanup_nolog:
10227 ipr_free_mem(ioa_cfg);
10228 out_msi_disable:
10229 ipr_wait_for_pci_err_recovery(ioa_cfg);
10230 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10231 pci_disable_msi(pdev);
10232 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10233 pci_disable_msix(pdev);
10234 cleanup_nomem:
10235 iounmap(ipr_regs);
10236 out_disable:
10237 pci_disable_device(pdev);
10238 out_release_regions:
10239 pci_release_regions(pdev);
10240 out_scsi_host_put:
10241 scsi_host_put(host);
10242 goto out;
10243 }
10244
10245 /**
10246 * ipr_initiate_ioa_bringdown - Bring down an adapter
10247 * @ioa_cfg: ioa config struct
10248 * @shutdown_type: shutdown type
10249 *
10250 * Description: This function will initiate bringing down the adapter.
10251 * This consists of issuing an IOA shutdown to the adapter
10252 * to flush the cache, and running BIST.
10253 * If the caller needs to wait on the completion of the reset,
10254 * the caller must sleep on the reset_wait_q.
10255 *
10256 * Return value:
10257 * none
10258 **/
10259 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10260 enum ipr_shutdown_type shutdown_type)
10261 {
10262 ENTER;
10263 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10264 ioa_cfg->sdt_state = ABORT_DUMP;
10265 ioa_cfg->reset_retries = 0;
10266 ioa_cfg->in_ioa_bringdown = 1;
10267 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10268 LEAVE;
10269 }
10270
10271 /**
10272 * __ipr_remove - Remove a single adapter
10273 * @pdev: pci device struct
10274 *
10275 * Adapter hot plug remove entry point.
10276 *
10277 * Return value:
10278 * none
10279 **/
10280 static void __ipr_remove(struct pci_dev *pdev)
10281 {
10282 unsigned long host_lock_flags = 0;
10283 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10284 int i;
10285 unsigned long driver_lock_flags;
10286 ENTER;
10287
10288 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10289 while (ioa_cfg->in_reset_reload) {
10290 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10291 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10292 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10293 }
10294
10295 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10296 spin_lock(&ioa_cfg->hrrq[i]._lock);
10297 ioa_cfg->hrrq[i].removing_ioa = 1;
10298 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10299 }
10300 wmb();
10301 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10302
10303 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10304 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10305 flush_work(&ioa_cfg->work_q);
10306 if (ioa_cfg->reset_work_q)
10307 flush_workqueue(ioa_cfg->reset_work_q);
10308 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10309 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10310
10311 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10312 list_del(&ioa_cfg->queue);
10313 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10314
10315 if (ioa_cfg->sdt_state == ABORT_DUMP)
10316 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10317 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10318
10319 ipr_free_all_resources(ioa_cfg);
10320
10321 LEAVE;
10322 }
10323
10324 /**
10325 * ipr_remove - IOA hot plug remove entry point
10326 * @pdev: pci device struct
10327 *
10328 * Adapter hot plug remove entry point.
10329 *
10330 * Return value:
10331 * none
10332 **/
10333 static void ipr_remove(struct pci_dev *pdev)
10334 {
10335 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10336
10337 ENTER;
10338
10339 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10340 &ipr_trace_attr);
10341 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10342 &ipr_dump_attr);
10343 scsi_remove_host(ioa_cfg->host);
10344
10345 __ipr_remove(pdev);
10346
10347 LEAVE;
10348 }
10349
10350 /**
10351 * ipr_probe - Adapter hot plug add entry point
10352 *
10353 * Return value:
10354 * 0 on success / non-zero on failure
10355 **/
10356 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10357 {
10358 struct ipr_ioa_cfg *ioa_cfg;
10359 int rc, i;
10360
10361 rc = ipr_probe_ioa(pdev, dev_id);
10362
10363 if (rc)
10364 return rc;
10365
10366 ioa_cfg = pci_get_drvdata(pdev);
10367 rc = ipr_probe_ioa_part2(ioa_cfg);
10368
10369 if (rc) {
10370 __ipr_remove(pdev);
10371 return rc;
10372 }
10373
10374 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10375
10376 if (rc) {
10377 __ipr_remove(pdev);
10378 return rc;
10379 }
10380
10381 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10382 &ipr_trace_attr);
10383
10384 if (rc) {
10385 scsi_remove_host(ioa_cfg->host);
10386 __ipr_remove(pdev);
10387 return rc;
10388 }
10389
10390 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10391 &ipr_dump_attr);
10392
10393 if (rc) {
10394 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10395 &ipr_trace_attr);
10396 scsi_remove_host(ioa_cfg->host);
10397 __ipr_remove(pdev);
10398 return rc;
10399 }
10400
10401 scsi_scan_host(ioa_cfg->host);
10402 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10403
10404 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10405 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10406 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10407 ioa_cfg->iopoll_weight, ipr_iopoll);
10408 }
10409 }
10410
10411 schedule_work(&ioa_cfg->work_q);
10412 return 0;
10413 }
10414
10415 /**
10416 * ipr_shutdown - Shutdown handler.
10417 * @pdev: pci device struct
10418 *
10419 * This function is invoked upon system shutdown/reboot. It will issue
10420 * an adapter shutdown to the adapter to flush the write cache.
10421 *
10422 * Return value:
10423 * none
10424 **/
10425 static void ipr_shutdown(struct pci_dev *pdev)
10426 {
10427 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10428 unsigned long lock_flags = 0;
10429 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10430 int i;
10431
10432 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10433 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10434 ioa_cfg->iopoll_weight = 0;
10435 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10436 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10437 }
10438
10439 while (ioa_cfg->in_reset_reload) {
10440 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10441 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10442 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10443 }
10444
10445 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10446 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10447
10448 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10449 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10450 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10451 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10452 ipr_free_irqs(ioa_cfg);
10453 pci_disable_device(ioa_cfg->pdev);
10454 }
10455 }
10456
10457 static struct pci_device_id ipr_pci_table[] = {
10458 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10459 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10460 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10461 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10462 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10463 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10464 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10465 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10466 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10467 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10468 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10469 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10470 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10471 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10472 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10473 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10474 IPR_USE_LONG_TRANSOP_TIMEOUT },
10475 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10476 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10477 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10478 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10479 IPR_USE_LONG_TRANSOP_TIMEOUT },
10480 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10481 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10482 IPR_USE_LONG_TRANSOP_TIMEOUT },
10483 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10484 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10485 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10486 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10487 IPR_USE_LONG_TRANSOP_TIMEOUT},
10488 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10489 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10490 IPR_USE_LONG_TRANSOP_TIMEOUT },
10491 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10492 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10493 IPR_USE_LONG_TRANSOP_TIMEOUT },
10494 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10495 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10496 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10497 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10498 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10499 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10500 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10501 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10502 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10503 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10504 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10505 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10506 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10507 IPR_USE_LONG_TRANSOP_TIMEOUT },
10508 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10509 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10510 IPR_USE_LONG_TRANSOP_TIMEOUT },
10511 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10512 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10513 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10514 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10515 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10516 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10517 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10518 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10519 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10520 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10521 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10522 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10523 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10524 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10525 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10526 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10527 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10528 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10529 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10530 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10531 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10532 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10533 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10534 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10535 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10536 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10537 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10538 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10539 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10540 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10541 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10542 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10543 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10544 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10545 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10546 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10547 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10548 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10549 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10550 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10551 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10552 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10553 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10554 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10555 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10556 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10557 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10558 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10559 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10560 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10561 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10562 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10563 { }
10564 };
10565 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10566
10567 static const struct pci_error_handlers ipr_err_handler = {
10568 .error_detected = ipr_pci_error_detected,
10569 .mmio_enabled = ipr_pci_mmio_enabled,
10570 .slot_reset = ipr_pci_slot_reset,
10571 };
10572
10573 static struct pci_driver ipr_driver = {
10574 .name = IPR_NAME,
10575 .id_table = ipr_pci_table,
10576 .probe = ipr_probe,
10577 .remove = ipr_remove,
10578 .shutdown = ipr_shutdown,
10579 .err_handler = &ipr_err_handler,
10580 };
10581
10582 /**
10583 * ipr_halt_done - Shutdown prepare completion
10584 *
10585 * Return value:
10586 * none
10587 **/
10588 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10589 {
10590 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10591 }
10592
10593 /**
10594 * ipr_halt - Issue shutdown prepare to all adapters
10595 *
10596 * Return value:
10597 * NOTIFY_OK on success / NOTIFY_DONE on failure
10598 **/
10599 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10600 {
10601 struct ipr_cmnd *ipr_cmd;
10602 struct ipr_ioa_cfg *ioa_cfg;
10603 unsigned long flags = 0, driver_lock_flags;
10604
10605 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10606 return NOTIFY_DONE;
10607
10608 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10609
10610 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10611 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10612 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10613 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10614 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10615 continue;
10616 }
10617
10618 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10619 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10620 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10621 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10622 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10623
10624 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10625 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10626 }
10627 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10628
10629 return NOTIFY_OK;
10630 }
10631
10632 static struct notifier_block ipr_notifier = {
10633 ipr_halt, NULL, 0
10634 };
10635
10636 /**
10637 * ipr_init - Module entry point
10638 *
10639 * Return value:
10640 * 0 on success / negative value on failure
10641 **/
10642 static int __init ipr_init(void)
10643 {
10644 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10645 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10646
10647 register_reboot_notifier(&ipr_notifier);
10648 return pci_register_driver(&ipr_driver);
10649 }
10650
10651 /**
10652 * ipr_exit - Module unload
10653 *
10654 * Module unload entry point.
10655 *
10656 * Return value:
10657 * none
10658 **/
10659 static void __exit ipr_exit(void)
10660 {
10661 unregister_reboot_notifier(&ipr_notifier);
10662 pci_unregister_driver(&ipr_driver);
10663 }
10664
10665 module_init(ipr_init);
10666 module_exit(ipr_exit);
Linux kernel - Deliverables
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