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hyperv: Remove recv_pkt_list and lock
[linux/fpc-iii.git] / drivers / scsi / ipr.c
blob924b0ba74dfea7aceadbf19673fa72ba6c82b10a
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 DEFINE_SPINLOCK(ipr_driver_lock);
103
104 /* This table describes the differences between DMA controller chips */
105 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
106 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
107 .mailbox = 0x0042C,
108 .max_cmds = 100,
109 .cache_line_size = 0x20,
110 .clear_isr = 1,
111 .iopoll_weight = 0,
112 {
113 .set_interrupt_mask_reg = 0x0022C,
114 .clr_interrupt_mask_reg = 0x00230,
115 .clr_interrupt_mask_reg32 = 0x00230,
116 .sense_interrupt_mask_reg = 0x0022C,
117 .sense_interrupt_mask_reg32 = 0x0022C,
118 .clr_interrupt_reg = 0x00228,
119 .clr_interrupt_reg32 = 0x00228,
120 .sense_interrupt_reg = 0x00224,
121 .sense_interrupt_reg32 = 0x00224,
122 .ioarrin_reg = 0x00404,
123 .sense_uproc_interrupt_reg = 0x00214,
124 .sense_uproc_interrupt_reg32 = 0x00214,
125 .set_uproc_interrupt_reg = 0x00214,
126 .set_uproc_interrupt_reg32 = 0x00214,
127 .clr_uproc_interrupt_reg = 0x00218,
128 .clr_uproc_interrupt_reg32 = 0x00218
129 }
130 },
131 { /* Snipe and Scamp */
132 .mailbox = 0x0052C,
133 .max_cmds = 100,
134 .cache_line_size = 0x20,
135 .clear_isr = 1,
136 .iopoll_weight = 0,
137 {
138 .set_interrupt_mask_reg = 0x00288,
139 .clr_interrupt_mask_reg = 0x0028C,
140 .clr_interrupt_mask_reg32 = 0x0028C,
141 .sense_interrupt_mask_reg = 0x00288,
142 .sense_interrupt_mask_reg32 = 0x00288,
143 .clr_interrupt_reg = 0x00284,
144 .clr_interrupt_reg32 = 0x00284,
145 .sense_interrupt_reg = 0x00280,
146 .sense_interrupt_reg32 = 0x00280,
147 .ioarrin_reg = 0x00504,
148 .sense_uproc_interrupt_reg = 0x00290,
149 .sense_uproc_interrupt_reg32 = 0x00290,
150 .set_uproc_interrupt_reg = 0x00290,
151 .set_uproc_interrupt_reg32 = 0x00290,
152 .clr_uproc_interrupt_reg = 0x00294,
153 .clr_uproc_interrupt_reg32 = 0x00294
154 }
155 },
156 { /* CRoC */
157 .mailbox = 0x00044,
158 .max_cmds = 1000,
159 .cache_line_size = 0x20,
160 .clear_isr = 0,
161 .iopoll_weight = 64,
162 {
163 .set_interrupt_mask_reg = 0x00010,
164 .clr_interrupt_mask_reg = 0x00018,
165 .clr_interrupt_mask_reg32 = 0x0001C,
166 .sense_interrupt_mask_reg = 0x00010,
167 .sense_interrupt_mask_reg32 = 0x00014,
168 .clr_interrupt_reg = 0x00008,
169 .clr_interrupt_reg32 = 0x0000C,
170 .sense_interrupt_reg = 0x00000,
171 .sense_interrupt_reg32 = 0x00004,
172 .ioarrin_reg = 0x00070,
173 .sense_uproc_interrupt_reg = 0x00020,
174 .sense_uproc_interrupt_reg32 = 0x00024,
175 .set_uproc_interrupt_reg = 0x00020,
176 .set_uproc_interrupt_reg32 = 0x00024,
177 .clr_uproc_interrupt_reg = 0x00028,
178 .clr_uproc_interrupt_reg32 = 0x0002C,
179 .init_feedback_reg = 0x0005C,
180 .dump_addr_reg = 0x00064,
181 .dump_data_reg = 0x00068,
182 .endian_swap_reg = 0x00084
183 }
184 },
185 };
186
187 static const struct ipr_chip_t ipr_chip[] = {
188 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
189 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
190 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
191 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
194 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
195 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
197 };
198
199 static int ipr_max_bus_speeds[] = {
200 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
201 };
202
203 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
204 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
205 module_param_named(max_speed, ipr_max_speed, uint, 0);
206 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
207 module_param_named(log_level, ipr_log_level, uint, 0);
208 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
209 module_param_named(testmode, ipr_testmode, int, 0);
210 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
211 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
212 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
213 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
214 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
215 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
216 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
217 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
218 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
219 module_param_named(max_devs, ipr_max_devs, int, 0);
220 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
221 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
222 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
223 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:2)");
224 MODULE_LICENSE("GPL");
225 MODULE_VERSION(IPR_DRIVER_VERSION);
226
227 /* A constant array of IOASCs/URCs/Error Messages */
228 static const
229 struct ipr_error_table_t ipr_error_table[] = {
230 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
231 "8155: An unknown error was received"},
232 {0x00330000, 0, 0,
233 "Soft underlength error"},
234 {0x005A0000, 0, 0,
235 "Command to be cancelled not found"},
236 {0x00808000, 0, 0,
237 "Qualified success"},
238 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
239 "FFFE: Soft device bus error recovered by the IOA"},
240 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
241 "4101: Soft device bus fabric error"},
242 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
243 "FFFC: Logical block guard error recovered by the device"},
244 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
245 "FFFC: Logical block reference tag error recovered by the device"},
246 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
247 "4171: Recovered scatter list tag / sequence number error"},
248 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
249 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
250 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
251 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
252 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FFFD: Recovered logical block reference tag error detected by the IOA"},
254 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
255 "FFFD: Logical block guard error recovered by the IOA"},
256 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
257 "FFF9: Device sector reassign successful"},
258 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
259 "FFF7: Media error recovered by device rewrite procedures"},
260 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
261 "7001: IOA sector reassignment successful"},
262 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
263 "FFF9: Soft media error. Sector reassignment recommended"},
264 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
265 "FFF7: Media error recovered by IOA rewrite procedures"},
266 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
267 "FF3D: Soft PCI bus error recovered by the IOA"},
268 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
269 "FFF6: Device hardware error recovered by the IOA"},
270 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
271 "FFF6: Device hardware error recovered by the device"},
272 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
273 "FF3D: Soft IOA error recovered by the IOA"},
274 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
275 "FFFA: Undefined device response recovered by the IOA"},
276 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
277 "FFF6: Device bus error, message or command phase"},
278 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
279 "FFFE: Task Management Function failed"},
280 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
281 "FFF6: Failure prediction threshold exceeded"},
282 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
283 "8009: Impending cache battery pack failure"},
284 {0x02040100, 0, 0,
285 "Logical Unit in process of becoming ready"},
286 {0x02040200, 0, 0,
287 "Initializing command required"},
288 {0x02040400, 0, 0,
289 "34FF: Disk device format in progress"},
290 {0x02040C00, 0, 0,
291 "Logical unit not accessible, target port in unavailable state"},
292 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
293 "9070: IOA requested reset"},
294 {0x023F0000, 0, 0,
295 "Synchronization required"},
296 {0x02408500, 0, 0,
297 "IOA microcode download required"},
298 {0x02408600, 0, 0,
299 "Device bus connection is prohibited by host"},
300 {0x024E0000, 0, 0,
301 "No ready, IOA shutdown"},
302 {0x025A0000, 0, 0,
303 "Not ready, IOA has been shutdown"},
304 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
305 "3020: Storage subsystem configuration error"},
306 {0x03110B00, 0, 0,
307 "FFF5: Medium error, data unreadable, recommend reassign"},
308 {0x03110C00, 0, 0,
309 "7000: Medium error, data unreadable, do not reassign"},
310 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
311 "FFF3: Disk media format bad"},
312 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
313 "3002: Addressed device failed to respond to selection"},
314 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
315 "3100: Device bus error"},
316 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
317 "3109: IOA timed out a device command"},
318 {0x04088000, 0, 0,
319 "3120: SCSI bus is not operational"},
320 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
321 "4100: Hard device bus fabric error"},
322 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
323 "310C: Logical block guard error detected by the device"},
324 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
325 "310C: Logical block reference tag error detected by the device"},
326 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
327 "4170: Scatter list tag / sequence number error"},
328 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
329 "8150: Logical block CRC error on IOA to Host transfer"},
330 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
331 "4170: Logical block sequence number error on IOA to Host transfer"},
332 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
333 "310D: Logical block reference tag error detected by the IOA"},
334 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
335 "310D: Logical block guard error detected by the IOA"},
336 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
337 "9000: IOA reserved area data check"},
338 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
339 "9001: IOA reserved area invalid data pattern"},
340 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
341 "9002: IOA reserved area LRC error"},
342 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
343 "Hardware Error, IOA metadata access error"},
344 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
345 "102E: Out of alternate sectors for disk storage"},
346 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
347 "FFF4: Data transfer underlength error"},
348 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
349 "FFF4: Data transfer overlength error"},
350 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
351 "3400: Logical unit failure"},
352 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
353 "FFF4: Device microcode is corrupt"},
354 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
355 "8150: PCI bus error"},
356 {0x04430000, 1, 0,
357 "Unsupported device bus message received"},
358 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
359 "FFF4: Disk device problem"},
360 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
361 "8150: Permanent IOA failure"},
362 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
363 "3010: Disk device returned wrong response to IOA"},
364 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
365 "8151: IOA microcode error"},
366 {0x04448500, 0, 0,
367 "Device bus status error"},
368 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
369 "8157: IOA error requiring IOA reset to recover"},
370 {0x04448700, 0, 0,
371 "ATA device status error"},
372 {0x04490000, 0, 0,
373 "Message reject received from the device"},
374 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
375 "8008: A permanent cache battery pack failure occurred"},
376 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
377 "9090: Disk unit has been modified after the last known status"},
378 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
379 "9081: IOA detected device error"},
380 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
381 "9082: IOA detected device error"},
382 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
383 "3110: Device bus error, message or command phase"},
384 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
385 "3110: SAS Command / Task Management Function failed"},
386 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
387 "9091: Incorrect hardware configuration change has been detected"},
388 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
389 "9073: Invalid multi-adapter configuration"},
390 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
391 "4010: Incorrect connection between cascaded expanders"},
392 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
393 "4020: Connections exceed IOA design limits"},
394 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
395 "4030: Incorrect multipath connection"},
396 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
397 "4110: Unsupported enclosure function"},
398 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
399 "4120: SAS cable VPD cannot be read"},
400 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
401 "FFF4: Command to logical unit failed"},
402 {0x05240000, 1, 0,
403 "Illegal request, invalid request type or request packet"},
404 {0x05250000, 0, 0,
405 "Illegal request, invalid resource handle"},
406 {0x05258000, 0, 0,
407 "Illegal request, commands not allowed to this device"},
408 {0x05258100, 0, 0,
409 "Illegal request, command not allowed to a secondary adapter"},
410 {0x05258200, 0, 0,
411 "Illegal request, command not allowed to a non-optimized resource"},
412 {0x05260000, 0, 0,
413 "Illegal request, invalid field in parameter list"},
414 {0x05260100, 0, 0,
415 "Illegal request, parameter not supported"},
416 {0x05260200, 0, 0,
417 "Illegal request, parameter value invalid"},
418 {0x052C0000, 0, 0,
419 "Illegal request, command sequence error"},
420 {0x052C8000, 1, 0,
421 "Illegal request, dual adapter support not enabled"},
422 {0x052C8100, 1, 0,
423 "Illegal request, another cable connector was physically disabled"},
424 {0x054E8000, 1, 0,
425 "Illegal request, inconsistent group id/group count"},
426 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
427 "9031: Array protection temporarily suspended, protection resuming"},
428 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
429 "9040: Array protection temporarily suspended, protection resuming"},
430 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
431 "4080: IOA exceeded maximum operating temperature"},
432 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
433 "4085: Service required"},
434 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
435 "3140: Device bus not ready to ready transition"},
436 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
437 "FFFB: SCSI bus was reset"},
438 {0x06290500, 0, 0,
439 "FFFE: SCSI bus transition to single ended"},
440 {0x06290600, 0, 0,
441 "FFFE: SCSI bus transition to LVD"},
442 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
443 "FFFB: SCSI bus was reset by another initiator"},
444 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
445 "3029: A device replacement has occurred"},
446 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
447 "4102: Device bus fabric performance degradation"},
448 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
449 "9051: IOA cache data exists for a missing or failed device"},
450 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
451 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
452 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
453 "9025: Disk unit is not supported at its physical location"},
454 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
455 "3020: IOA detected a SCSI bus configuration error"},
456 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
457 "3150: SCSI bus configuration error"},
458 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
459 "9074: Asymmetric advanced function disk configuration"},
460 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
461 "4040: Incomplete multipath connection between IOA and enclosure"},
462 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
463 "4041: Incomplete multipath connection between enclosure and device"},
464 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
465 "9075: Incomplete multipath connection between IOA and remote IOA"},
466 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
467 "9076: Configuration error, missing remote IOA"},
468 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
469 "4050: Enclosure does not support a required multipath function"},
470 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
471 "4121: Configuration error, required cable is missing"},
472 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
473 "4122: Cable is not plugged into the correct location on remote IOA"},
474 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
475 "4123: Configuration error, invalid cable vital product data"},
476 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
477 "4124: Configuration error, both cable ends are plugged into the same IOA"},
478 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
479 "4070: Logically bad block written on device"},
480 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
481 "9041: Array protection temporarily suspended"},
482 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
483 "9042: Corrupt array parity detected on specified device"},
484 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
485 "9030: Array no longer protected due to missing or failed disk unit"},
486 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9071: Link operational transition"},
488 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9072: Link not operational transition"},
490 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9032: Array exposed but still protected"},
492 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
493 "70DD: Device forced failed by disrupt device command"},
494 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
495 "4061: Multipath redundancy level got better"},
496 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
497 "4060: Multipath redundancy level got worse"},
498 {0x07270000, 0, 0,
499 "Failure due to other device"},
500 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
501 "9008: IOA does not support functions expected by devices"},
502 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
503 "9010: Cache data associated with attached devices cannot be found"},
504 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
505 "9011: Cache data belongs to devices other than those attached"},
506 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
507 "9020: Array missing 2 or more devices with only 1 device present"},
508 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
509 "9021: Array missing 2 or more devices with 2 or more devices present"},
510 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
511 "9022: Exposed array is missing a required device"},
512 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
513 "9023: Array member(s) not at required physical locations"},
514 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
515 "9024: Array not functional due to present hardware configuration"},
516 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
517 "9026: Array not functional due to present hardware configuration"},
518 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
519 "9027: Array is missing a device and parity is out of sync"},
520 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
521 "9028: Maximum number of arrays already exist"},
522 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
523 "9050: Required cache data cannot be located for a disk unit"},
524 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
525 "9052: Cache data exists for a device that has been modified"},
526 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
527 "9054: IOA resources not available due to previous problems"},
528 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
529 "9092: Disk unit requires initialization before use"},
530 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
531 "9029: Incorrect hardware configuration change has been detected"},
532 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
533 "9060: One or more disk pairs are missing from an array"},
534 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
535 "9061: One or more disks are missing from an array"},
536 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
537 "9062: One or more disks are missing from an array"},
538 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
539 "9063: Maximum number of functional arrays has been exceeded"},
540 {0x07279A00, 0, 0,
541 "Data protect, other volume set problem"},
542 {0x0B260000, 0, 0,
543 "Aborted command, invalid descriptor"},
544 {0x0B3F9000, 0, 0,
545 "Target operating conditions have changed, dual adapter takeover"},
546 {0x0B530200, 0, 0,
547 "Aborted command, medium removal prevented"},
548 {0x0B5A0000, 0, 0,
549 "Command terminated by host"},
550 {0x0B5B8000, 0, 0,
551 "Aborted command, command terminated by host"}
552 };
553
554 static const struct ipr_ses_table_entry ipr_ses_table[] = {
555 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
556 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
557 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
558 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
559 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
560 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
561 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
562 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
563 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
564 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
565 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
566 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
567 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
568 };
569
570 /*
571 * Function Prototypes
572 */
573 static int ipr_reset_alert(struct ipr_cmnd *);
574 static void ipr_process_ccn(struct ipr_cmnd *);
575 static void ipr_process_error(struct ipr_cmnd *);
576 static void ipr_reset_ioa_job(struct ipr_cmnd *);
577 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
578 enum ipr_shutdown_type);
579
580 #ifdef CONFIG_SCSI_IPR_TRACE
581 /**
582 * ipr_trc_hook - Add a trace entry to the driver trace
583 * @ipr_cmd: ipr command struct
584 * @type: trace type
585 * @add_data: additional data
586 *
587 * Return value:
588 * none
589 **/
590 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
591 u8 type, u32 add_data)
592 {
593 struct ipr_trace_entry *trace_entry;
594 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
595
596 trace_entry = &ioa_cfg->trace[atomic_add_return
597 (1, &ioa_cfg->trace_index)%IPR_NUM_TRACE_ENTRIES];
598 trace_entry->time = jiffies;
599 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
600 trace_entry->type = type;
601 if (ipr_cmd->ioa_cfg->sis64)
602 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
603 else
604 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
605 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
606 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
607 trace_entry->u.add_data = add_data;
608 wmb();
609 }
610 #else
611 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
612 #endif
613
614 /**
615 * ipr_lock_and_done - Acquire lock and complete command
616 * @ipr_cmd: ipr command struct
617 *
618 * Return value:
619 * none
620 **/
621 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
622 {
623 unsigned long lock_flags;
624 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
625
626 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
627 ipr_cmd->done(ipr_cmd);
628 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
629 }
630
631 /**
632 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
633 * @ipr_cmd: ipr command struct
634 *
635 * Return value:
636 * none
637 **/
638 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
639 {
640 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
641 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
642 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
643 dma_addr_t dma_addr = ipr_cmd->dma_addr;
644 int hrrq_id;
645
646 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
647 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
648 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
649 ioarcb->data_transfer_length = 0;
650 ioarcb->read_data_transfer_length = 0;
651 ioarcb->ioadl_len = 0;
652 ioarcb->read_ioadl_len = 0;
653
654 if (ipr_cmd->ioa_cfg->sis64) {
655 ioarcb->u.sis64_addr_data.data_ioadl_addr =
656 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
657 ioasa64->u.gata.status = 0;
658 } else {
659 ioarcb->write_ioadl_addr =
660 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
661 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
662 ioasa->u.gata.status = 0;
663 }
664
665 ioasa->hdr.ioasc = 0;
666 ioasa->hdr.residual_data_len = 0;
667 ipr_cmd->scsi_cmd = NULL;
668 ipr_cmd->qc = NULL;
669 ipr_cmd->sense_buffer[0] = 0;
670 ipr_cmd->dma_use_sg = 0;
671 }
672
673 /**
674 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
675 * @ipr_cmd: ipr command struct
676 *
677 * Return value:
678 * none
679 **/
680 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
681 void (*fast_done) (struct ipr_cmnd *))
682 {
683 ipr_reinit_ipr_cmnd(ipr_cmd);
684 ipr_cmd->u.scratch = 0;
685 ipr_cmd->sibling = NULL;
686 ipr_cmd->fast_done = fast_done;
687 init_timer(&ipr_cmd->timer);
688 }
689
690 /**
691 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
692 * @ioa_cfg: ioa config struct
693 *
694 * Return value:
695 * pointer to ipr command struct
696 **/
697 static
698 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
699 {
700 struct ipr_cmnd *ipr_cmd = NULL;
701
702 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
703 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
704 struct ipr_cmnd, queue);
705 list_del(&ipr_cmd->queue);
706 }
707
708
709 return ipr_cmd;
710 }
711
712 /**
713 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
714 * @ioa_cfg: ioa config struct
715 *
716 * Return value:
717 * pointer to ipr command struct
718 **/
719 static
720 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
721 {
722 struct ipr_cmnd *ipr_cmd =
723 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
724 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
725 return ipr_cmd;
726 }
727
728 /**
729 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
730 * @ioa_cfg: ioa config struct
731 * @clr_ints: interrupts to clear
732 *
733 * This function masks all interrupts on the adapter, then clears the
734 * interrupts specified in the mask
735 *
736 * Return value:
737 * none
738 **/
739 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
740 u32 clr_ints)
741 {
742 volatile u32 int_reg;
743 int i;
744
745 /* Stop new interrupts */
746 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
747 spin_lock(&ioa_cfg->hrrq[i]._lock);
748 ioa_cfg->hrrq[i].allow_interrupts = 0;
749 spin_unlock(&ioa_cfg->hrrq[i]._lock);
750 }
751 wmb();
752
753 /* Set interrupt mask to stop all new interrupts */
754 if (ioa_cfg->sis64)
755 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
756 else
757 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
758
759 /* Clear any pending interrupts */
760 if (ioa_cfg->sis64)
761 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
762 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
763 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
764 }
765
766 /**
767 * ipr_save_pcix_cmd_reg - Save PCI-X command register
768 * @ioa_cfg: ioa config struct
769 *
770 * Return value:
771 * 0 on success / -EIO on failure
772 **/
773 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
774 {
775 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
776
777 if (pcix_cmd_reg == 0)
778 return 0;
779
780 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
781 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
782 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
783 return -EIO;
784 }
785
786 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
787 return 0;
788 }
789
790 /**
791 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
792 * @ioa_cfg: ioa config struct
793 *
794 * Return value:
795 * 0 on success / -EIO on failure
796 **/
797 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
798 {
799 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
800
801 if (pcix_cmd_reg) {
802 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
803 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
804 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
805 return -EIO;
806 }
807 }
808
809 return 0;
810 }
811
812 /**
813 * ipr_sata_eh_done - done function for aborted SATA commands
814 * @ipr_cmd: ipr command struct
815 *
816 * This function is invoked for ops generated to SATA
817 * devices which are being aborted.
818 *
819 * Return value:
820 * none
821 **/
822 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
823 {
824 struct ata_queued_cmd *qc = ipr_cmd->qc;
825 struct ipr_sata_port *sata_port = qc->ap->private_data;
826
827 qc->err_mask |= AC_ERR_OTHER;
828 sata_port->ioasa.status |= ATA_BUSY;
829 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
830 ata_qc_complete(qc);
831 }
832
833 /**
834 * ipr_scsi_eh_done - mid-layer done function for aborted ops
835 * @ipr_cmd: ipr command struct
836 *
837 * This function is invoked by the interrupt handler for
838 * ops generated by the SCSI mid-layer which are being aborted.
839 *
840 * Return value:
841 * none
842 **/
843 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
844 {
845 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
846
847 scsi_cmd->result |= (DID_ERROR << 16);
848
849 scsi_dma_unmap(ipr_cmd->scsi_cmd);
850 scsi_cmd->scsi_done(scsi_cmd);
851 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
852 }
853
854 /**
855 * ipr_fail_all_ops - Fails all outstanding ops.
856 * @ioa_cfg: ioa config struct
857 *
858 * This function fails all outstanding ops.
859 *
860 * Return value:
861 * none
862 **/
863 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
864 {
865 struct ipr_cmnd *ipr_cmd, *temp;
866 struct ipr_hrr_queue *hrrq;
867
868 ENTER;
869 for_each_hrrq(hrrq, ioa_cfg) {
870 spin_lock(&hrrq->_lock);
871 list_for_each_entry_safe(ipr_cmd,
872 temp, &hrrq->hrrq_pending_q, queue) {
873 list_del(&ipr_cmd->queue);
874
875 ipr_cmd->s.ioasa.hdr.ioasc =
876 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
877 ipr_cmd->s.ioasa.hdr.ilid =
878 cpu_to_be32(IPR_DRIVER_ILID);
879
880 if (ipr_cmd->scsi_cmd)
881 ipr_cmd->done = ipr_scsi_eh_done;
882 else if (ipr_cmd->qc)
883 ipr_cmd->done = ipr_sata_eh_done;
884
885 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
886 IPR_IOASC_IOA_WAS_RESET);
887 del_timer(&ipr_cmd->timer);
888 ipr_cmd->done(ipr_cmd);
889 }
890 spin_unlock(&hrrq->_lock);
891 }
892 LEAVE;
893 }
894
895 /**
896 * ipr_send_command - Send driver initiated requests.
897 * @ipr_cmd: ipr command struct
898 *
899 * This function sends a command to the adapter using the correct write call.
900 * In the case of sis64, calculate the ioarcb size required. Then or in the
901 * appropriate bits.
902 *
903 * Return value:
904 * none
905 **/
906 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
907 {
908 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
909 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
910
911 if (ioa_cfg->sis64) {
912 /* The default size is 256 bytes */
913 send_dma_addr |= 0x1;
914
915 /* If the number of ioadls * size of ioadl > 128 bytes,
916 then use a 512 byte ioarcb */
917 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
918 send_dma_addr |= 0x4;
919 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
920 } else
921 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
922 }
923
924 /**
925 * ipr_do_req - Send driver initiated requests.
926 * @ipr_cmd: ipr command struct
927 * @done: done function
928 * @timeout_func: timeout function
929 * @timeout: timeout value
930 *
931 * This function sends the specified command to the adapter with the
932 * timeout given. The done function is invoked on command completion.
933 *
934 * Return value:
935 * none
936 **/
937 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
938 void (*done) (struct ipr_cmnd *),
939 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
940 {
941 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
942
943 ipr_cmd->done = done;
944
945 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
946 ipr_cmd->timer.expires = jiffies + timeout;
947 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
948
949 add_timer(&ipr_cmd->timer);
950
951 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
952
953 ipr_send_command(ipr_cmd);
954 }
955
956 /**
957 * ipr_internal_cmd_done - Op done function for an internally generated op.
958 * @ipr_cmd: ipr command struct
959 *
960 * This function is the op done function for an internally generated,
961 * blocking op. It simply wakes the sleeping thread.
962 *
963 * Return value:
964 * none
965 **/
966 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
967 {
968 if (ipr_cmd->sibling)
969 ipr_cmd->sibling = NULL;
970 else
971 complete(&ipr_cmd->completion);
972 }
973
974 /**
975 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
976 * @ipr_cmd: ipr command struct
977 * @dma_addr: dma address
978 * @len: transfer length
979 * @flags: ioadl flag value
980 *
981 * This function initializes an ioadl in the case where there is only a single
982 * descriptor.
983 *
984 * Return value:
985 * nothing
986 **/
987 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
988 u32 len, int flags)
989 {
990 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
991 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
992
993 ipr_cmd->dma_use_sg = 1;
994
995 if (ipr_cmd->ioa_cfg->sis64) {
996 ioadl64->flags = cpu_to_be32(flags);
997 ioadl64->data_len = cpu_to_be32(len);
998 ioadl64->address = cpu_to_be64(dma_addr);
999
1000 ipr_cmd->ioarcb.ioadl_len =
1001 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1002 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1003 } else {
1004 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1005 ioadl->address = cpu_to_be32(dma_addr);
1006
1007 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1008 ipr_cmd->ioarcb.read_ioadl_len =
1009 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1010 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1011 } else {
1012 ipr_cmd->ioarcb.ioadl_len =
1013 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1014 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1015 }
1016 }
1017 }
1018
1019 /**
1020 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1021 * @ipr_cmd: ipr command struct
1022 * @timeout_func: function to invoke if command times out
1023 * @timeout: timeout
1024 *
1025 * Return value:
1026 * none
1027 **/
1028 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1029 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
1030 u32 timeout)
1031 {
1032 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1033
1034 init_completion(&ipr_cmd->completion);
1035 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1036
1037 spin_unlock_irq(ioa_cfg->host->host_lock);
1038 wait_for_completion(&ipr_cmd->completion);
1039 spin_lock_irq(ioa_cfg->host->host_lock);
1040 }
1041
1042 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1043 {
1044 if (ioa_cfg->hrrq_num == 1)
1045 return 0;
1046 else
1047 return (atomic_add_return(1, &ioa_cfg->hrrq_index) % (ioa_cfg->hrrq_num - 1)) + 1;
1048 }
1049
1050 /**
1051 * ipr_send_hcam - Send an HCAM to the adapter.
1052 * @ioa_cfg: ioa config struct
1053 * @type: HCAM type
1054 * @hostrcb: hostrcb struct
1055 *
1056 * This function will send a Host Controlled Async command to the adapter.
1057 * If HCAMs are currently not allowed to be issued to the adapter, it will
1058 * place the hostrcb on the free queue.
1059 *
1060 * Return value:
1061 * none
1062 **/
1063 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1064 struct ipr_hostrcb *hostrcb)
1065 {
1066 struct ipr_cmnd *ipr_cmd;
1067 struct ipr_ioarcb *ioarcb;
1068
1069 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1070 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1071 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1072 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1073
1074 ipr_cmd->u.hostrcb = hostrcb;
1075 ioarcb = &ipr_cmd->ioarcb;
1076
1077 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1078 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1079 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1080 ioarcb->cmd_pkt.cdb[1] = type;
1081 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1082 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1083
1084 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1085 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1086
1087 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1088 ipr_cmd->done = ipr_process_ccn;
1089 else
1090 ipr_cmd->done = ipr_process_error;
1091
1092 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1093
1094 ipr_send_command(ipr_cmd);
1095 } else {
1096 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1097 }
1098 }
1099
1100 /**
1101 * ipr_update_ata_class - Update the ata class in the resource entry
1102 * @res: resource entry struct
1103 * @proto: cfgte device bus protocol value
1104 *
1105 * Return value:
1106 * none
1107 **/
1108 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1109 {
1110 switch (proto) {
1111 case IPR_PROTO_SATA:
1112 case IPR_PROTO_SAS_STP:
1113 res->ata_class = ATA_DEV_ATA;
1114 break;
1115 case IPR_PROTO_SATA_ATAPI:
1116 case IPR_PROTO_SAS_STP_ATAPI:
1117 res->ata_class = ATA_DEV_ATAPI;
1118 break;
1119 default:
1120 res->ata_class = ATA_DEV_UNKNOWN;
1121 break;
1122 };
1123 }
1124
1125 /**
1126 * ipr_init_res_entry - Initialize a resource entry struct.
1127 * @res: resource entry struct
1128 * @cfgtew: config table entry wrapper struct
1129 *
1130 * Return value:
1131 * none
1132 **/
1133 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1134 struct ipr_config_table_entry_wrapper *cfgtew)
1135 {
1136 int found = 0;
1137 unsigned int proto;
1138 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1139 struct ipr_resource_entry *gscsi_res = NULL;
1140
1141 res->needs_sync_complete = 0;
1142 res->in_erp = 0;
1143 res->add_to_ml = 0;
1144 res->del_from_ml = 0;
1145 res->resetting_device = 0;
1146 res->reset_occurred = 0;
1147 res->sdev = NULL;
1148 res->sata_port = NULL;
1149
1150 if (ioa_cfg->sis64) {
1151 proto = cfgtew->u.cfgte64->proto;
1152 res->res_flags = cfgtew->u.cfgte64->res_flags;
1153 res->qmodel = IPR_QUEUEING_MODEL64(res);
1154 res->type = cfgtew->u.cfgte64->res_type;
1155
1156 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1157 sizeof(res->res_path));
1158
1159 res->bus = 0;
1160 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1161 sizeof(res->dev_lun.scsi_lun));
1162 res->lun = scsilun_to_int(&res->dev_lun);
1163
1164 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1165 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1166 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1167 found = 1;
1168 res->target = gscsi_res->target;
1169 break;
1170 }
1171 }
1172 if (!found) {
1173 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1174 ioa_cfg->max_devs_supported);
1175 set_bit(res->target, ioa_cfg->target_ids);
1176 }
1177 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1178 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1179 res->target = 0;
1180 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1181 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1182 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1183 ioa_cfg->max_devs_supported);
1184 set_bit(res->target, ioa_cfg->array_ids);
1185 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1186 res->bus = IPR_VSET_VIRTUAL_BUS;
1187 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1188 ioa_cfg->max_devs_supported);
1189 set_bit(res->target, ioa_cfg->vset_ids);
1190 } else {
1191 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1192 ioa_cfg->max_devs_supported);
1193 set_bit(res->target, ioa_cfg->target_ids);
1194 }
1195 } else {
1196 proto = cfgtew->u.cfgte->proto;
1197 res->qmodel = IPR_QUEUEING_MODEL(res);
1198 res->flags = cfgtew->u.cfgte->flags;
1199 if (res->flags & IPR_IS_IOA_RESOURCE)
1200 res->type = IPR_RES_TYPE_IOAFP;
1201 else
1202 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1203
1204 res->bus = cfgtew->u.cfgte->res_addr.bus;
1205 res->target = cfgtew->u.cfgte->res_addr.target;
1206 res->lun = cfgtew->u.cfgte->res_addr.lun;
1207 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1208 }
1209
1210 ipr_update_ata_class(res, proto);
1211 }
1212
1213 /**
1214 * ipr_is_same_device - Determine if two devices are the same.
1215 * @res: resource entry struct
1216 * @cfgtew: config table entry wrapper struct
1217 *
1218 * Return value:
1219 * 1 if the devices are the same / 0 otherwise
1220 **/
1221 static int ipr_is_same_device(struct ipr_resource_entry *res,
1222 struct ipr_config_table_entry_wrapper *cfgtew)
1223 {
1224 if (res->ioa_cfg->sis64) {
1225 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1226 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1227 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1228 sizeof(cfgtew->u.cfgte64->lun))) {
1229 return 1;
1230 }
1231 } else {
1232 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1233 res->target == cfgtew->u.cfgte->res_addr.target &&
1234 res->lun == cfgtew->u.cfgte->res_addr.lun)
1235 return 1;
1236 }
1237
1238 return 0;
1239 }
1240
1241 /**
1242 * __ipr_format_res_path - Format the resource path for printing.
1243 * @res_path: resource path
1244 * @buf: buffer
1245 * @len: length of buffer provided
1246 *
1247 * Return value:
1248 * pointer to buffer
1249 **/
1250 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1251 {
1252 int i;
1253 char *p = buffer;
1254
1255 *p = '\0';
1256 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1257 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1258 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1259
1260 return buffer;
1261 }
1262
1263 /**
1264 * ipr_format_res_path - Format the resource path for printing.
1265 * @ioa_cfg: ioa config struct
1266 * @res_path: resource path
1267 * @buf: buffer
1268 * @len: length of buffer provided
1269 *
1270 * Return value:
1271 * pointer to buffer
1272 **/
1273 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1274 u8 *res_path, char *buffer, int len)
1275 {
1276 char *p = buffer;
1277
1278 *p = '\0';
1279 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1280 __ipr_format_res_path(res_path, p, len - (buffer - p));
1281 return buffer;
1282 }
1283
1284 /**
1285 * ipr_update_res_entry - Update the resource entry.
1286 * @res: resource entry struct
1287 * @cfgtew: config table entry wrapper struct
1288 *
1289 * Return value:
1290 * none
1291 **/
1292 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1293 struct ipr_config_table_entry_wrapper *cfgtew)
1294 {
1295 char buffer[IPR_MAX_RES_PATH_LENGTH];
1296 unsigned int proto;
1297 int new_path = 0;
1298
1299 if (res->ioa_cfg->sis64) {
1300 res->flags = cfgtew->u.cfgte64->flags;
1301 res->res_flags = cfgtew->u.cfgte64->res_flags;
1302 res->type = cfgtew->u.cfgte64->res_type;
1303
1304 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1305 sizeof(struct ipr_std_inq_data));
1306
1307 res->qmodel = IPR_QUEUEING_MODEL64(res);
1308 proto = cfgtew->u.cfgte64->proto;
1309 res->res_handle = cfgtew->u.cfgte64->res_handle;
1310 res->dev_id = cfgtew->u.cfgte64->dev_id;
1311
1312 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1313 sizeof(res->dev_lun.scsi_lun));
1314
1315 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1316 sizeof(res->res_path))) {
1317 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1318 sizeof(res->res_path));
1319 new_path = 1;
1320 }
1321
1322 if (res->sdev && new_path)
1323 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1324 ipr_format_res_path(res->ioa_cfg,
1325 res->res_path, buffer, sizeof(buffer)));
1326 } else {
1327 res->flags = cfgtew->u.cfgte->flags;
1328 if (res->flags & IPR_IS_IOA_RESOURCE)
1329 res->type = IPR_RES_TYPE_IOAFP;
1330 else
1331 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1332
1333 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1334 sizeof(struct ipr_std_inq_data));
1335
1336 res->qmodel = IPR_QUEUEING_MODEL(res);
1337 proto = cfgtew->u.cfgte->proto;
1338 res->res_handle = cfgtew->u.cfgte->res_handle;
1339 }
1340
1341 ipr_update_ata_class(res, proto);
1342 }
1343
1344 /**
1345 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1346 * for the resource.
1347 * @res: resource entry struct
1348 * @cfgtew: config table entry wrapper struct
1349 *
1350 * Return value:
1351 * none
1352 **/
1353 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1354 {
1355 struct ipr_resource_entry *gscsi_res = NULL;
1356 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1357
1358 if (!ioa_cfg->sis64)
1359 return;
1360
1361 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1362 clear_bit(res->target, ioa_cfg->array_ids);
1363 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1364 clear_bit(res->target, ioa_cfg->vset_ids);
1365 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1366 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1367 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1368 return;
1369 clear_bit(res->target, ioa_cfg->target_ids);
1370
1371 } else if (res->bus == 0)
1372 clear_bit(res->target, ioa_cfg->target_ids);
1373 }
1374
1375 /**
1376 * ipr_handle_config_change - Handle a config change from the adapter
1377 * @ioa_cfg: ioa config struct
1378 * @hostrcb: hostrcb
1379 *
1380 * Return value:
1381 * none
1382 **/
1383 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1384 struct ipr_hostrcb *hostrcb)
1385 {
1386 struct ipr_resource_entry *res = NULL;
1387 struct ipr_config_table_entry_wrapper cfgtew;
1388 __be32 cc_res_handle;
1389
1390 u32 is_ndn = 1;
1391
1392 if (ioa_cfg->sis64) {
1393 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1394 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1395 } else {
1396 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1397 cc_res_handle = cfgtew.u.cfgte->res_handle;
1398 }
1399
1400 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1401 if (res->res_handle == cc_res_handle) {
1402 is_ndn = 0;
1403 break;
1404 }
1405 }
1406
1407 if (is_ndn) {
1408 if (list_empty(&ioa_cfg->free_res_q)) {
1409 ipr_send_hcam(ioa_cfg,
1410 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1411 hostrcb);
1412 return;
1413 }
1414
1415 res = list_entry(ioa_cfg->free_res_q.next,
1416 struct ipr_resource_entry, queue);
1417
1418 list_del(&res->queue);
1419 ipr_init_res_entry(res, &cfgtew);
1420 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1421 }
1422
1423 ipr_update_res_entry(res, &cfgtew);
1424
1425 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1426 if (res->sdev) {
1427 res->del_from_ml = 1;
1428 res->res_handle = IPR_INVALID_RES_HANDLE;
1429 if (ioa_cfg->allow_ml_add_del)
1430 schedule_work(&ioa_cfg->work_q);
1431 } else {
1432 ipr_clear_res_target(res);
1433 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1434 }
1435 } else if (!res->sdev || res->del_from_ml) {
1436 res->add_to_ml = 1;
1437 if (ioa_cfg->allow_ml_add_del)
1438 schedule_work(&ioa_cfg->work_q);
1439 }
1440
1441 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1442 }
1443
1444 /**
1445 * ipr_process_ccn - Op done function for a CCN.
1446 * @ipr_cmd: ipr command struct
1447 *
1448 * This function is the op done function for a configuration
1449 * change notification host controlled async from the adapter.
1450 *
1451 * Return value:
1452 * none
1453 **/
1454 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1455 {
1456 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1457 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1458 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1459
1460 list_del(&hostrcb->queue);
1461 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1462
1463 if (ioasc) {
1464 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1465 dev_err(&ioa_cfg->pdev->dev,
1466 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1467
1468 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1469 } else {
1470 ipr_handle_config_change(ioa_cfg, hostrcb);
1471 }
1472 }
1473
1474 /**
1475 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1476 * @i: index into buffer
1477 * @buf: string to modify
1478 *
1479 * This function will strip all trailing whitespace, pad the end
1480 * of the string with a single space, and NULL terminate the string.
1481 *
1482 * Return value:
1483 * new length of string
1484 **/
1485 static int strip_and_pad_whitespace(int i, char *buf)
1486 {
1487 while (i && buf[i] == ' ')
1488 i--;
1489 buf[i+1] = ' ';
1490 buf[i+2] = '\0';
1491 return i + 2;
1492 }
1493
1494 /**
1495 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1496 * @prefix: string to print at start of printk
1497 * @hostrcb: hostrcb pointer
1498 * @vpd: vendor/product id/sn struct
1499 *
1500 * Return value:
1501 * none
1502 **/
1503 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1504 struct ipr_vpd *vpd)
1505 {
1506 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1507 int i = 0;
1508
1509 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1510 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1511
1512 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1513 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1514
1515 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1516 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1517
1518 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1519 }
1520
1521 /**
1522 * ipr_log_vpd - Log the passed VPD to the error log.
1523 * @vpd: vendor/product id/sn struct
1524 *
1525 * Return value:
1526 * none
1527 **/
1528 static void ipr_log_vpd(struct ipr_vpd *vpd)
1529 {
1530 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1531 + IPR_SERIAL_NUM_LEN];
1532
1533 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1534 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1535 IPR_PROD_ID_LEN);
1536 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1537 ipr_err("Vendor/Product ID: %s\n", buffer);
1538
1539 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1540 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1541 ipr_err(" Serial Number: %s\n", buffer);
1542 }
1543
1544 /**
1545 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1546 * @prefix: string to print at start of printk
1547 * @hostrcb: hostrcb pointer
1548 * @vpd: vendor/product id/sn/wwn struct
1549 *
1550 * Return value:
1551 * none
1552 **/
1553 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1554 struct ipr_ext_vpd *vpd)
1555 {
1556 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1557 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1558 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1559 }
1560
1561 /**
1562 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1563 * @vpd: vendor/product id/sn/wwn struct
1564 *
1565 * Return value:
1566 * none
1567 **/
1568 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1569 {
1570 ipr_log_vpd(&vpd->vpd);
1571 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1572 be32_to_cpu(vpd->wwid[1]));
1573 }
1574
1575 /**
1576 * ipr_log_enhanced_cache_error - Log a cache error.
1577 * @ioa_cfg: ioa config struct
1578 * @hostrcb: hostrcb struct
1579 *
1580 * Return value:
1581 * none
1582 **/
1583 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1584 struct ipr_hostrcb *hostrcb)
1585 {
1586 struct ipr_hostrcb_type_12_error *error;
1587
1588 if (ioa_cfg->sis64)
1589 error = &hostrcb->hcam.u.error64.u.type_12_error;
1590 else
1591 error = &hostrcb->hcam.u.error.u.type_12_error;
1592
1593 ipr_err("-----Current Configuration-----\n");
1594 ipr_err("Cache Directory Card Information:\n");
1595 ipr_log_ext_vpd(&error->ioa_vpd);
1596 ipr_err("Adapter Card Information:\n");
1597 ipr_log_ext_vpd(&error->cfc_vpd);
1598
1599 ipr_err("-----Expected Configuration-----\n");
1600 ipr_err("Cache Directory Card Information:\n");
1601 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1602 ipr_err("Adapter Card Information:\n");
1603 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1604
1605 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1606 be32_to_cpu(error->ioa_data[0]),
1607 be32_to_cpu(error->ioa_data[1]),
1608 be32_to_cpu(error->ioa_data[2]));
1609 }
1610
1611 /**
1612 * ipr_log_cache_error - Log a cache error.
1613 * @ioa_cfg: ioa config struct
1614 * @hostrcb: hostrcb struct
1615 *
1616 * Return value:
1617 * none
1618 **/
1619 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1620 struct ipr_hostrcb *hostrcb)
1621 {
1622 struct ipr_hostrcb_type_02_error *error =
1623 &hostrcb->hcam.u.error.u.type_02_error;
1624
1625 ipr_err("-----Current Configuration-----\n");
1626 ipr_err("Cache Directory Card Information:\n");
1627 ipr_log_vpd(&error->ioa_vpd);
1628 ipr_err("Adapter Card Information:\n");
1629 ipr_log_vpd(&error->cfc_vpd);
1630
1631 ipr_err("-----Expected Configuration-----\n");
1632 ipr_err("Cache Directory Card Information:\n");
1633 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1634 ipr_err("Adapter Card Information:\n");
1635 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1636
1637 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1638 be32_to_cpu(error->ioa_data[0]),
1639 be32_to_cpu(error->ioa_data[1]),
1640 be32_to_cpu(error->ioa_data[2]));
1641 }
1642
1643 /**
1644 * ipr_log_enhanced_config_error - Log a configuration error.
1645 * @ioa_cfg: ioa config struct
1646 * @hostrcb: hostrcb struct
1647 *
1648 * Return value:
1649 * none
1650 **/
1651 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1652 struct ipr_hostrcb *hostrcb)
1653 {
1654 int errors_logged, i;
1655 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1656 struct ipr_hostrcb_type_13_error *error;
1657
1658 error = &hostrcb->hcam.u.error.u.type_13_error;
1659 errors_logged = be32_to_cpu(error->errors_logged);
1660
1661 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1662 be32_to_cpu(error->errors_detected), errors_logged);
1663
1664 dev_entry = error->dev;
1665
1666 for (i = 0; i < errors_logged; i++, dev_entry++) {
1667 ipr_err_separator;
1668
1669 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1670 ipr_log_ext_vpd(&dev_entry->vpd);
1671
1672 ipr_err("-----New Device Information-----\n");
1673 ipr_log_ext_vpd(&dev_entry->new_vpd);
1674
1675 ipr_err("Cache Directory Card Information:\n");
1676 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1677
1678 ipr_err("Adapter Card Information:\n");
1679 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1680 }
1681 }
1682
1683 /**
1684 * ipr_log_sis64_config_error - Log a device error.
1685 * @ioa_cfg: ioa config struct
1686 * @hostrcb: hostrcb struct
1687 *
1688 * Return value:
1689 * none
1690 **/
1691 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1692 struct ipr_hostrcb *hostrcb)
1693 {
1694 int errors_logged, i;
1695 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1696 struct ipr_hostrcb_type_23_error *error;
1697 char buffer[IPR_MAX_RES_PATH_LENGTH];
1698
1699 error = &hostrcb->hcam.u.error64.u.type_23_error;
1700 errors_logged = be32_to_cpu(error->errors_logged);
1701
1702 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1703 be32_to_cpu(error->errors_detected), errors_logged);
1704
1705 dev_entry = error->dev;
1706
1707 for (i = 0; i < errors_logged; i++, dev_entry++) {
1708 ipr_err_separator;
1709
1710 ipr_err("Device %d : %s", i + 1,
1711 __ipr_format_res_path(dev_entry->res_path,
1712 buffer, sizeof(buffer)));
1713 ipr_log_ext_vpd(&dev_entry->vpd);
1714
1715 ipr_err("-----New Device Information-----\n");
1716 ipr_log_ext_vpd(&dev_entry->new_vpd);
1717
1718 ipr_err("Cache Directory Card Information:\n");
1719 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1720
1721 ipr_err("Adapter Card Information:\n");
1722 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1723 }
1724 }
1725
1726 /**
1727 * ipr_log_config_error - Log a configuration error.
1728 * @ioa_cfg: ioa config struct
1729 * @hostrcb: hostrcb struct
1730 *
1731 * Return value:
1732 * none
1733 **/
1734 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1735 struct ipr_hostrcb *hostrcb)
1736 {
1737 int errors_logged, i;
1738 struct ipr_hostrcb_device_data_entry *dev_entry;
1739 struct ipr_hostrcb_type_03_error *error;
1740
1741 error = &hostrcb->hcam.u.error.u.type_03_error;
1742 errors_logged = be32_to_cpu(error->errors_logged);
1743
1744 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1745 be32_to_cpu(error->errors_detected), errors_logged);
1746
1747 dev_entry = error->dev;
1748
1749 for (i = 0; i < errors_logged; i++, dev_entry++) {
1750 ipr_err_separator;
1751
1752 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1753 ipr_log_vpd(&dev_entry->vpd);
1754
1755 ipr_err("-----New Device Information-----\n");
1756 ipr_log_vpd(&dev_entry->new_vpd);
1757
1758 ipr_err("Cache Directory Card Information:\n");
1759 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1760
1761 ipr_err("Adapter Card Information:\n");
1762 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1763
1764 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1765 be32_to_cpu(dev_entry->ioa_data[0]),
1766 be32_to_cpu(dev_entry->ioa_data[1]),
1767 be32_to_cpu(dev_entry->ioa_data[2]),
1768 be32_to_cpu(dev_entry->ioa_data[3]),
1769 be32_to_cpu(dev_entry->ioa_data[4]));
1770 }
1771 }
1772
1773 /**
1774 * ipr_log_enhanced_array_error - Log an array configuration error.
1775 * @ioa_cfg: ioa config struct
1776 * @hostrcb: hostrcb struct
1777 *
1778 * Return value:
1779 * none
1780 **/
1781 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1782 struct ipr_hostrcb *hostrcb)
1783 {
1784 int i, num_entries;
1785 struct ipr_hostrcb_type_14_error *error;
1786 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1787 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1788
1789 error = &hostrcb->hcam.u.error.u.type_14_error;
1790
1791 ipr_err_separator;
1792
1793 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1794 error->protection_level,
1795 ioa_cfg->host->host_no,
1796 error->last_func_vset_res_addr.bus,
1797 error->last_func_vset_res_addr.target,
1798 error->last_func_vset_res_addr.lun);
1799
1800 ipr_err_separator;
1801
1802 array_entry = error->array_member;
1803 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1804 ARRAY_SIZE(error->array_member));
1805
1806 for (i = 0; i < num_entries; i++, array_entry++) {
1807 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1808 continue;
1809
1810 if (be32_to_cpu(error->exposed_mode_adn) == i)
1811 ipr_err("Exposed Array Member %d:\n", i);
1812 else
1813 ipr_err("Array Member %d:\n", i);
1814
1815 ipr_log_ext_vpd(&array_entry->vpd);
1816 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1817 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1818 "Expected Location");
1819
1820 ipr_err_separator;
1821 }
1822 }
1823
1824 /**
1825 * ipr_log_array_error - Log an array configuration error.
1826 * @ioa_cfg: ioa config struct
1827 * @hostrcb: hostrcb struct
1828 *
1829 * Return value:
1830 * none
1831 **/
1832 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1833 struct ipr_hostrcb *hostrcb)
1834 {
1835 int i;
1836 struct ipr_hostrcb_type_04_error *error;
1837 struct ipr_hostrcb_array_data_entry *array_entry;
1838 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1839
1840 error = &hostrcb->hcam.u.error.u.type_04_error;
1841
1842 ipr_err_separator;
1843
1844 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1845 error->protection_level,
1846 ioa_cfg->host->host_no,
1847 error->last_func_vset_res_addr.bus,
1848 error->last_func_vset_res_addr.target,
1849 error->last_func_vset_res_addr.lun);
1850
1851 ipr_err_separator;
1852
1853 array_entry = error->array_member;
1854
1855 for (i = 0; i < 18; i++) {
1856 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1857 continue;
1858
1859 if (be32_to_cpu(error->exposed_mode_adn) == i)
1860 ipr_err("Exposed Array Member %d:\n", i);
1861 else
1862 ipr_err("Array Member %d:\n", i);
1863
1864 ipr_log_vpd(&array_entry->vpd);
1865
1866 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1867 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1868 "Expected Location");
1869
1870 ipr_err_separator;
1871
1872 if (i == 9)
1873 array_entry = error->array_member2;
1874 else
1875 array_entry++;
1876 }
1877 }
1878
1879 /**
1880 * ipr_log_hex_data - Log additional hex IOA error data.
1881 * @ioa_cfg: ioa config struct
1882 * @data: IOA error data
1883 * @len: data length
1884 *
1885 * Return value:
1886 * none
1887 **/
1888 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1889 {
1890 int i;
1891
1892 if (len == 0)
1893 return;
1894
1895 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1896 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1897
1898 for (i = 0; i < len / 4; i += 4) {
1899 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1900 be32_to_cpu(data[i]),
1901 be32_to_cpu(data[i+1]),
1902 be32_to_cpu(data[i+2]),
1903 be32_to_cpu(data[i+3]));
1904 }
1905 }
1906
1907 /**
1908 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1909 * @ioa_cfg: ioa config struct
1910 * @hostrcb: hostrcb struct
1911 *
1912 * Return value:
1913 * none
1914 **/
1915 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1916 struct ipr_hostrcb *hostrcb)
1917 {
1918 struct ipr_hostrcb_type_17_error *error;
1919
1920 if (ioa_cfg->sis64)
1921 error = &hostrcb->hcam.u.error64.u.type_17_error;
1922 else
1923 error = &hostrcb->hcam.u.error.u.type_17_error;
1924
1925 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1926 strim(error->failure_reason);
1927
1928 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1929 be32_to_cpu(hostrcb->hcam.u.error.prc));
1930 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1931 ipr_log_hex_data(ioa_cfg, error->data,
1932 be32_to_cpu(hostrcb->hcam.length) -
1933 (offsetof(struct ipr_hostrcb_error, u) +
1934 offsetof(struct ipr_hostrcb_type_17_error, data)));
1935 }
1936
1937 /**
1938 * ipr_log_dual_ioa_error - Log a dual adapter error.
1939 * @ioa_cfg: ioa config struct
1940 * @hostrcb: hostrcb struct
1941 *
1942 * Return value:
1943 * none
1944 **/
1945 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1946 struct ipr_hostrcb *hostrcb)
1947 {
1948 struct ipr_hostrcb_type_07_error *error;
1949
1950 error = &hostrcb->hcam.u.error.u.type_07_error;
1951 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1952 strim(error->failure_reason);
1953
1954 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1955 be32_to_cpu(hostrcb->hcam.u.error.prc));
1956 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1957 ipr_log_hex_data(ioa_cfg, error->data,
1958 be32_to_cpu(hostrcb->hcam.length) -
1959 (offsetof(struct ipr_hostrcb_error, u) +
1960 offsetof(struct ipr_hostrcb_type_07_error, data)));
1961 }
1962
1963 static const struct {
1964 u8 active;
1965 char *desc;
1966 } path_active_desc[] = {
1967 { IPR_PATH_NO_INFO, "Path" },
1968 { IPR_PATH_ACTIVE, "Active path" },
1969 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1970 };
1971
1972 static const struct {
1973 u8 state;
1974 char *desc;
1975 } path_state_desc[] = {
1976 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1977 { IPR_PATH_HEALTHY, "is healthy" },
1978 { IPR_PATH_DEGRADED, "is degraded" },
1979 { IPR_PATH_FAILED, "is failed" }
1980 };
1981
1982 /**
1983 * ipr_log_fabric_path - Log a fabric path error
1984 * @hostrcb: hostrcb struct
1985 * @fabric: fabric descriptor
1986 *
1987 * Return value:
1988 * none
1989 **/
1990 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1991 struct ipr_hostrcb_fabric_desc *fabric)
1992 {
1993 int i, j;
1994 u8 path_state = fabric->path_state;
1995 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1996 u8 state = path_state & IPR_PATH_STATE_MASK;
1997
1998 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1999 if (path_active_desc[i].active != active)
2000 continue;
2001
2002 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2003 if (path_state_desc[j].state != state)
2004 continue;
2005
2006 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2007 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2008 path_active_desc[i].desc, path_state_desc[j].desc,
2009 fabric->ioa_port);
2010 } else if (fabric->cascaded_expander == 0xff) {
2011 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2012 path_active_desc[i].desc, path_state_desc[j].desc,
2013 fabric->ioa_port, fabric->phy);
2014 } else if (fabric->phy == 0xff) {
2015 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2016 path_active_desc[i].desc, path_state_desc[j].desc,
2017 fabric->ioa_port, fabric->cascaded_expander);
2018 } else {
2019 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2020 path_active_desc[i].desc, path_state_desc[j].desc,
2021 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2022 }
2023 return;
2024 }
2025 }
2026
2027 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2028 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2029 }
2030
2031 /**
2032 * ipr_log64_fabric_path - Log a fabric path error
2033 * @hostrcb: hostrcb struct
2034 * @fabric: fabric descriptor
2035 *
2036 * Return value:
2037 * none
2038 **/
2039 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2040 struct ipr_hostrcb64_fabric_desc *fabric)
2041 {
2042 int i, j;
2043 u8 path_state = fabric->path_state;
2044 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2045 u8 state = path_state & IPR_PATH_STATE_MASK;
2046 char buffer[IPR_MAX_RES_PATH_LENGTH];
2047
2048 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2049 if (path_active_desc[i].active != active)
2050 continue;
2051
2052 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2053 if (path_state_desc[j].state != state)
2054 continue;
2055
2056 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2057 path_active_desc[i].desc, path_state_desc[j].desc,
2058 ipr_format_res_path(hostrcb->ioa_cfg,
2059 fabric->res_path,
2060 buffer, sizeof(buffer)));
2061 return;
2062 }
2063 }
2064
2065 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2066 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2067 buffer, sizeof(buffer)));
2068 }
2069
2070 static const struct {
2071 u8 type;
2072 char *desc;
2073 } path_type_desc[] = {
2074 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2075 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2076 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2077 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2078 };
2079
2080 static const struct {
2081 u8 status;
2082 char *desc;
2083 } path_status_desc[] = {
2084 { IPR_PATH_CFG_NO_PROB, "Functional" },
2085 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2086 { IPR_PATH_CFG_FAILED, "Failed" },
2087 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2088 { IPR_PATH_NOT_DETECTED, "Missing" },
2089 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2090 };
2091
2092 static const char *link_rate[] = {
2093 "unknown",
2094 "disabled",
2095 "phy reset problem",
2096 "spinup hold",
2097 "port selector",
2098 "unknown",
2099 "unknown",
2100 "unknown",
2101 "1.5Gbps",
2102 "3.0Gbps",
2103 "unknown",
2104 "unknown",
2105 "unknown",
2106 "unknown",
2107 "unknown",
2108 "unknown"
2109 };
2110
2111 /**
2112 * ipr_log_path_elem - Log a fabric path element.
2113 * @hostrcb: hostrcb struct
2114 * @cfg: fabric path element struct
2115 *
2116 * Return value:
2117 * none
2118 **/
2119 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2120 struct ipr_hostrcb_config_element *cfg)
2121 {
2122 int i, j;
2123 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2124 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2125
2126 if (type == IPR_PATH_CFG_NOT_EXIST)
2127 return;
2128
2129 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2130 if (path_type_desc[i].type != type)
2131 continue;
2132
2133 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2134 if (path_status_desc[j].status != status)
2135 continue;
2136
2137 if (type == IPR_PATH_CFG_IOA_PORT) {
2138 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2139 path_status_desc[j].desc, path_type_desc[i].desc,
2140 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2141 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2142 } else {
2143 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2144 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2145 path_status_desc[j].desc, path_type_desc[i].desc,
2146 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2147 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2148 } else if (cfg->cascaded_expander == 0xff) {
2149 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2150 "WWN=%08X%08X\n", path_status_desc[j].desc,
2151 path_type_desc[i].desc, cfg->phy,
2152 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2153 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2154 } else if (cfg->phy == 0xff) {
2155 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2156 "WWN=%08X%08X\n", path_status_desc[j].desc,
2157 path_type_desc[i].desc, cfg->cascaded_expander,
2158 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2159 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2160 } else {
2161 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2162 "WWN=%08X%08X\n", path_status_desc[j].desc,
2163 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2164 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2165 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2166 }
2167 }
2168 return;
2169 }
2170 }
2171
2172 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2173 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
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 }
2177
2178 /**
2179 * ipr_log64_path_elem - Log a fabric path element.
2180 * @hostrcb: hostrcb struct
2181 * @cfg: fabric path element struct
2182 *
2183 * Return value:
2184 * none
2185 **/
2186 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2187 struct ipr_hostrcb64_config_element *cfg)
2188 {
2189 int i, j;
2190 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2191 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2192 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2193 char buffer[IPR_MAX_RES_PATH_LENGTH];
2194
2195 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2196 return;
2197
2198 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2199 if (path_type_desc[i].type != type)
2200 continue;
2201
2202 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2203 if (path_status_desc[j].status != status)
2204 continue;
2205
2206 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2207 path_status_desc[j].desc, path_type_desc[i].desc,
2208 ipr_format_res_path(hostrcb->ioa_cfg,
2209 cfg->res_path, buffer, sizeof(buffer)),
2210 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2211 be32_to_cpu(cfg->wwid[0]),
2212 be32_to_cpu(cfg->wwid[1]));
2213 return;
2214 }
2215 }
2216 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2217 "WWN=%08X%08X\n", cfg->type_status,
2218 ipr_format_res_path(hostrcb->ioa_cfg,
2219 cfg->res_path, buffer, sizeof(buffer)),
2220 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2221 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2222 }
2223
2224 /**
2225 * ipr_log_fabric_error - Log a fabric error.
2226 * @ioa_cfg: ioa config struct
2227 * @hostrcb: hostrcb struct
2228 *
2229 * Return value:
2230 * none
2231 **/
2232 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2233 struct ipr_hostrcb *hostrcb)
2234 {
2235 struct ipr_hostrcb_type_20_error *error;
2236 struct ipr_hostrcb_fabric_desc *fabric;
2237 struct ipr_hostrcb_config_element *cfg;
2238 int i, add_len;
2239
2240 error = &hostrcb->hcam.u.error.u.type_20_error;
2241 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2242 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2243
2244 add_len = be32_to_cpu(hostrcb->hcam.length) -
2245 (offsetof(struct ipr_hostrcb_error, u) +
2246 offsetof(struct ipr_hostrcb_type_20_error, desc));
2247
2248 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2249 ipr_log_fabric_path(hostrcb, fabric);
2250 for_each_fabric_cfg(fabric, cfg)
2251 ipr_log_path_elem(hostrcb, cfg);
2252
2253 add_len -= be16_to_cpu(fabric->length);
2254 fabric = (struct ipr_hostrcb_fabric_desc *)
2255 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2256 }
2257
2258 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2259 }
2260
2261 /**
2262 * ipr_log_sis64_array_error - Log a sis64 array error.
2263 * @ioa_cfg: ioa config struct
2264 * @hostrcb: hostrcb struct
2265 *
2266 * Return value:
2267 * none
2268 **/
2269 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2270 struct ipr_hostrcb *hostrcb)
2271 {
2272 int i, num_entries;
2273 struct ipr_hostrcb_type_24_error *error;
2274 struct ipr_hostrcb64_array_data_entry *array_entry;
2275 char buffer[IPR_MAX_RES_PATH_LENGTH];
2276 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2277
2278 error = &hostrcb->hcam.u.error64.u.type_24_error;
2279
2280 ipr_err_separator;
2281
2282 ipr_err("RAID %s Array Configuration: %s\n",
2283 error->protection_level,
2284 ipr_format_res_path(ioa_cfg, error->last_res_path,
2285 buffer, sizeof(buffer)));
2286
2287 ipr_err_separator;
2288
2289 array_entry = error->array_member;
2290 num_entries = min_t(u32, error->num_entries,
2291 ARRAY_SIZE(error->array_member));
2292
2293 for (i = 0; i < num_entries; i++, array_entry++) {
2294
2295 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2296 continue;
2297
2298 if (error->exposed_mode_adn == i)
2299 ipr_err("Exposed Array Member %d:\n", i);
2300 else
2301 ipr_err("Array Member %d:\n", i);
2302
2303 ipr_err("Array Member %d:\n", i);
2304 ipr_log_ext_vpd(&array_entry->vpd);
2305 ipr_err("Current Location: %s\n",
2306 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2307 buffer, sizeof(buffer)));
2308 ipr_err("Expected Location: %s\n",
2309 ipr_format_res_path(ioa_cfg,
2310 array_entry->expected_res_path,
2311 buffer, sizeof(buffer)));
2312
2313 ipr_err_separator;
2314 }
2315 }
2316
2317 /**
2318 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2319 * @ioa_cfg: ioa config struct
2320 * @hostrcb: hostrcb struct
2321 *
2322 * Return value:
2323 * none
2324 **/
2325 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2326 struct ipr_hostrcb *hostrcb)
2327 {
2328 struct ipr_hostrcb_type_30_error *error;
2329 struct ipr_hostrcb64_fabric_desc *fabric;
2330 struct ipr_hostrcb64_config_element *cfg;
2331 int i, add_len;
2332
2333 error = &hostrcb->hcam.u.error64.u.type_30_error;
2334
2335 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2336 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2337
2338 add_len = be32_to_cpu(hostrcb->hcam.length) -
2339 (offsetof(struct ipr_hostrcb64_error, u) +
2340 offsetof(struct ipr_hostrcb_type_30_error, desc));
2341
2342 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2343 ipr_log64_fabric_path(hostrcb, fabric);
2344 for_each_fabric_cfg(fabric, cfg)
2345 ipr_log64_path_elem(hostrcb, cfg);
2346
2347 add_len -= be16_to_cpu(fabric->length);
2348 fabric = (struct ipr_hostrcb64_fabric_desc *)
2349 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2350 }
2351
2352 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2353 }
2354
2355 /**
2356 * ipr_log_generic_error - Log an adapter error.
2357 * @ioa_cfg: ioa config struct
2358 * @hostrcb: hostrcb struct
2359 *
2360 * Return value:
2361 * none
2362 **/
2363 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2364 struct ipr_hostrcb *hostrcb)
2365 {
2366 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2367 be32_to_cpu(hostrcb->hcam.length));
2368 }
2369
2370 /**
2371 * ipr_log_sis64_device_error - Log a cache error.
2372 * @ioa_cfg: ioa config struct
2373 * @hostrcb: hostrcb struct
2374 *
2375 * Return value:
2376 * none
2377 **/
2378 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2379 struct ipr_hostrcb *hostrcb)
2380 {
2381 struct ipr_hostrcb_type_21_error *error;
2382 char buffer[IPR_MAX_RES_PATH_LENGTH];
2383
2384 error = &hostrcb->hcam.u.error64.u.type_21_error;
2385
2386 ipr_err("-----Failing Device Information-----\n");
2387 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2388 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2389 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2390 ipr_err("Device Resource Path: %s\n",
2391 __ipr_format_res_path(error->res_path,
2392 buffer, sizeof(buffer)));
2393 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2394 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2395 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2396 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc);
2397 ipr_err("SCSI Sense Data:\n");
2398 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2399 ipr_err("SCSI Command Descriptor Block: \n");
2400 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2401
2402 ipr_err("Additional IOA Data:\n");
2403 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2404 }
2405
2406 /**
2407 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2408 * @ioasc: IOASC
2409 *
2410 * This function will return the index of into the ipr_error_table
2411 * for the specified IOASC. If the IOASC is not in the table,
2412 * 0 will be returned, which points to the entry used for unknown errors.
2413 *
2414 * Return value:
2415 * index into the ipr_error_table
2416 **/
2417 static u32 ipr_get_error(u32 ioasc)
2418 {
2419 int i;
2420
2421 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2422 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2423 return i;
2424
2425 return 0;
2426 }
2427
2428 /**
2429 * ipr_handle_log_data - Log an adapter error.
2430 * @ioa_cfg: ioa config struct
2431 * @hostrcb: hostrcb struct
2432 *
2433 * This function logs an adapter error to the system.
2434 *
2435 * Return value:
2436 * none
2437 **/
2438 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2439 struct ipr_hostrcb *hostrcb)
2440 {
2441 u32 ioasc;
2442 int error_index;
2443
2444 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2445 return;
2446
2447 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2448 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2449
2450 if (ioa_cfg->sis64)
2451 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2452 else
2453 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2454
2455 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2456 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2457 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2458 scsi_report_bus_reset(ioa_cfg->host,
2459 hostrcb->hcam.u.error.fd_res_addr.bus);
2460 }
2461
2462 error_index = ipr_get_error(ioasc);
2463
2464 if (!ipr_error_table[error_index].log_hcam)
2465 return;
2466
2467 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2468
2469 /* Set indication we have logged an error */
2470 ioa_cfg->errors_logged++;
2471
2472 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2473 return;
2474 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2475 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2476
2477 switch (hostrcb->hcam.overlay_id) {
2478 case IPR_HOST_RCB_OVERLAY_ID_2:
2479 ipr_log_cache_error(ioa_cfg, hostrcb);
2480 break;
2481 case IPR_HOST_RCB_OVERLAY_ID_3:
2482 ipr_log_config_error(ioa_cfg, hostrcb);
2483 break;
2484 case IPR_HOST_RCB_OVERLAY_ID_4:
2485 case IPR_HOST_RCB_OVERLAY_ID_6:
2486 ipr_log_array_error(ioa_cfg, hostrcb);
2487 break;
2488 case IPR_HOST_RCB_OVERLAY_ID_7:
2489 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2490 break;
2491 case IPR_HOST_RCB_OVERLAY_ID_12:
2492 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2493 break;
2494 case IPR_HOST_RCB_OVERLAY_ID_13:
2495 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2496 break;
2497 case IPR_HOST_RCB_OVERLAY_ID_14:
2498 case IPR_HOST_RCB_OVERLAY_ID_16:
2499 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2500 break;
2501 case IPR_HOST_RCB_OVERLAY_ID_17:
2502 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2503 break;
2504 case IPR_HOST_RCB_OVERLAY_ID_20:
2505 ipr_log_fabric_error(ioa_cfg, hostrcb);
2506 break;
2507 case IPR_HOST_RCB_OVERLAY_ID_21:
2508 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2509 break;
2510 case IPR_HOST_RCB_OVERLAY_ID_23:
2511 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2512 break;
2513 case IPR_HOST_RCB_OVERLAY_ID_24:
2514 case IPR_HOST_RCB_OVERLAY_ID_26:
2515 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2516 break;
2517 case IPR_HOST_RCB_OVERLAY_ID_30:
2518 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2519 break;
2520 case IPR_HOST_RCB_OVERLAY_ID_1:
2521 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2522 default:
2523 ipr_log_generic_error(ioa_cfg, hostrcb);
2524 break;
2525 }
2526 }
2527
2528 /**
2529 * ipr_process_error - Op done function for an adapter error log.
2530 * @ipr_cmd: ipr command struct
2531 *
2532 * This function is the op done function for an error log host
2533 * controlled async from the adapter. It will log the error and
2534 * send the HCAM back to the adapter.
2535 *
2536 * Return value:
2537 * none
2538 **/
2539 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2540 {
2541 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2542 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2543 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2544 u32 fd_ioasc;
2545
2546 if (ioa_cfg->sis64)
2547 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2548 else
2549 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2550
2551 list_del(&hostrcb->queue);
2552 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2553
2554 if (!ioasc) {
2555 ipr_handle_log_data(ioa_cfg, hostrcb);
2556 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2557 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2558 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2559 dev_err(&ioa_cfg->pdev->dev,
2560 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2561 }
2562
2563 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2564 }
2565
2566 /**
2567 * ipr_timeout - An internally generated op has timed out.
2568 * @ipr_cmd: ipr command struct
2569 *
2570 * This function blocks host requests and initiates an
2571 * adapter reset.
2572 *
2573 * Return value:
2574 * none
2575 **/
2576 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2577 {
2578 unsigned long lock_flags = 0;
2579 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2580
2581 ENTER;
2582 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2583
2584 ioa_cfg->errors_logged++;
2585 dev_err(&ioa_cfg->pdev->dev,
2586 "Adapter being reset due to command timeout.\n");
2587
2588 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2589 ioa_cfg->sdt_state = GET_DUMP;
2590
2591 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2592 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2593
2594 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2595 LEAVE;
2596 }
2597
2598 /**
2599 * ipr_oper_timeout - Adapter timed out transitioning to operational
2600 * @ipr_cmd: ipr command struct
2601 *
2602 * This function blocks host requests and initiates an
2603 * adapter reset.
2604 *
2605 * Return value:
2606 * none
2607 **/
2608 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2609 {
2610 unsigned long lock_flags = 0;
2611 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2612
2613 ENTER;
2614 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2615
2616 ioa_cfg->errors_logged++;
2617 dev_err(&ioa_cfg->pdev->dev,
2618 "Adapter timed out transitioning to operational.\n");
2619
2620 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2621 ioa_cfg->sdt_state = GET_DUMP;
2622
2623 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2624 if (ipr_fastfail)
2625 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2626 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2627 }
2628
2629 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2630 LEAVE;
2631 }
2632
2633 /**
2634 * ipr_find_ses_entry - Find matching SES in SES table
2635 * @res: resource entry struct of SES
2636 *
2637 * Return value:
2638 * pointer to SES table entry / NULL on failure
2639 **/
2640 static const struct ipr_ses_table_entry *
2641 ipr_find_ses_entry(struct ipr_resource_entry *res)
2642 {
2643 int i, j, matches;
2644 struct ipr_std_inq_vpids *vpids;
2645 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2646
2647 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2648 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2649 if (ste->compare_product_id_byte[j] == 'X') {
2650 vpids = &res->std_inq_data.vpids;
2651 if (vpids->product_id[j] == ste->product_id[j])
2652 matches++;
2653 else
2654 break;
2655 } else
2656 matches++;
2657 }
2658
2659 if (matches == IPR_PROD_ID_LEN)
2660 return ste;
2661 }
2662
2663 return NULL;
2664 }
2665
2666 /**
2667 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2668 * @ioa_cfg: ioa config struct
2669 * @bus: SCSI bus
2670 * @bus_width: bus width
2671 *
2672 * Return value:
2673 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2674 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2675 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2676 * max 160MHz = max 320MB/sec).
2677 **/
2678 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2679 {
2680 struct ipr_resource_entry *res;
2681 const struct ipr_ses_table_entry *ste;
2682 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2683
2684 /* Loop through each config table entry in the config table buffer */
2685 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2686 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2687 continue;
2688
2689 if (bus != res->bus)
2690 continue;
2691
2692 if (!(ste = ipr_find_ses_entry(res)))
2693 continue;
2694
2695 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2696 }
2697
2698 return max_xfer_rate;
2699 }
2700
2701 /**
2702 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2703 * @ioa_cfg: ioa config struct
2704 * @max_delay: max delay in micro-seconds to wait
2705 *
2706 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2707 *
2708 * Return value:
2709 * 0 on success / other on failure
2710 **/
2711 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2712 {
2713 volatile u32 pcii_reg;
2714 int delay = 1;
2715
2716 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2717 while (delay < max_delay) {
2718 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2719
2720 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2721 return 0;
2722
2723 /* udelay cannot be used if delay is more than a few milliseconds */
2724 if ((delay / 1000) > MAX_UDELAY_MS)
2725 mdelay(delay / 1000);
2726 else
2727 udelay(delay);
2728
2729 delay += delay;
2730 }
2731 return -EIO;
2732 }
2733
2734 /**
2735 * ipr_get_sis64_dump_data_section - Dump IOA memory
2736 * @ioa_cfg: ioa config struct
2737 * @start_addr: adapter address to dump
2738 * @dest: destination kernel buffer
2739 * @length_in_words: length to dump in 4 byte words
2740 *
2741 * Return value:
2742 * 0 on success
2743 **/
2744 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2745 u32 start_addr,
2746 __be32 *dest, u32 length_in_words)
2747 {
2748 int i;
2749
2750 for (i = 0; i < length_in_words; i++) {
2751 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2752 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2753 dest++;
2754 }
2755
2756 return 0;
2757 }
2758
2759 /**
2760 * ipr_get_ldump_data_section - Dump IOA memory
2761 * @ioa_cfg: ioa config struct
2762 * @start_addr: adapter address to dump
2763 * @dest: destination kernel buffer
2764 * @length_in_words: length to dump in 4 byte words
2765 *
2766 * Return value:
2767 * 0 on success / -EIO on failure
2768 **/
2769 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2770 u32 start_addr,
2771 __be32 *dest, u32 length_in_words)
2772 {
2773 volatile u32 temp_pcii_reg;
2774 int i, delay = 0;
2775
2776 if (ioa_cfg->sis64)
2777 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2778 dest, length_in_words);
2779
2780 /* Write IOA interrupt reg starting LDUMP state */
2781 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2782 ioa_cfg->regs.set_uproc_interrupt_reg32);
2783
2784 /* Wait for IO debug acknowledge */
2785 if (ipr_wait_iodbg_ack(ioa_cfg,
2786 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2787 dev_err(&ioa_cfg->pdev->dev,
2788 "IOA dump long data transfer timeout\n");
2789 return -EIO;
2790 }
2791
2792 /* Signal LDUMP interlocked - clear IO debug ack */
2793 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2794 ioa_cfg->regs.clr_interrupt_reg);
2795
2796 /* Write Mailbox with starting address */
2797 writel(start_addr, ioa_cfg->ioa_mailbox);
2798
2799 /* Signal address valid - clear IOA Reset alert */
2800 writel(IPR_UPROCI_RESET_ALERT,
2801 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2802
2803 for (i = 0; i < length_in_words; i++) {
2804 /* Wait for IO debug acknowledge */
2805 if (ipr_wait_iodbg_ack(ioa_cfg,
2806 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2807 dev_err(&ioa_cfg->pdev->dev,
2808 "IOA dump short data transfer timeout\n");
2809 return -EIO;
2810 }
2811
2812 /* Read data from mailbox and increment destination pointer */
2813 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2814 dest++;
2815
2816 /* For all but the last word of data, signal data received */
2817 if (i < (length_in_words - 1)) {
2818 /* Signal dump data received - Clear IO debug Ack */
2819 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2820 ioa_cfg->regs.clr_interrupt_reg);
2821 }
2822 }
2823
2824 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2825 writel(IPR_UPROCI_RESET_ALERT,
2826 ioa_cfg->regs.set_uproc_interrupt_reg32);
2827
2828 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2829 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2830
2831 /* Signal dump data received - Clear IO debug Ack */
2832 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2833 ioa_cfg->regs.clr_interrupt_reg);
2834
2835 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2836 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2837 temp_pcii_reg =
2838 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2839
2840 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2841 return 0;
2842
2843 udelay(10);
2844 delay += 10;
2845 }
2846
2847 return 0;
2848 }
2849
2850 #ifdef CONFIG_SCSI_IPR_DUMP
2851 /**
2852 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2853 * @ioa_cfg: ioa config struct
2854 * @pci_address: adapter address
2855 * @length: length of data to copy
2856 *
2857 * Copy data from PCI adapter to kernel buffer.
2858 * Note: length MUST be a 4 byte multiple
2859 * Return value:
2860 * 0 on success / other on failure
2861 **/
2862 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2863 unsigned long pci_address, u32 length)
2864 {
2865 int bytes_copied = 0;
2866 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2867 __be32 *page;
2868 unsigned long lock_flags = 0;
2869 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2870
2871 if (ioa_cfg->sis64)
2872 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2873 else
2874 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2875
2876 while (bytes_copied < length &&
2877 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2878 if (ioa_dump->page_offset >= PAGE_SIZE ||
2879 ioa_dump->page_offset == 0) {
2880 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2881
2882 if (!page) {
2883 ipr_trace;
2884 return bytes_copied;
2885 }
2886
2887 ioa_dump->page_offset = 0;
2888 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2889 ioa_dump->next_page_index++;
2890 } else
2891 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2892
2893 rem_len = length - bytes_copied;
2894 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2895 cur_len = min(rem_len, rem_page_len);
2896
2897 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2898 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2899 rc = -EIO;
2900 } else {
2901 rc = ipr_get_ldump_data_section(ioa_cfg,
2902 pci_address + bytes_copied,
2903 &page[ioa_dump->page_offset / 4],
2904 (cur_len / sizeof(u32)));
2905 }
2906 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2907
2908 if (!rc) {
2909 ioa_dump->page_offset += cur_len;
2910 bytes_copied += cur_len;
2911 } else {
2912 ipr_trace;
2913 break;
2914 }
2915 schedule();
2916 }
2917
2918 return bytes_copied;
2919 }
2920
2921 /**
2922 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2923 * @hdr: dump entry header struct
2924 *
2925 * Return value:
2926 * nothing
2927 **/
2928 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2929 {
2930 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2931 hdr->num_elems = 1;
2932 hdr->offset = sizeof(*hdr);
2933 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2934 }
2935
2936 /**
2937 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2938 * @ioa_cfg: ioa config struct
2939 * @driver_dump: driver dump struct
2940 *
2941 * Return value:
2942 * nothing
2943 **/
2944 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2945 struct ipr_driver_dump *driver_dump)
2946 {
2947 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2948
2949 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2950 driver_dump->ioa_type_entry.hdr.len =
2951 sizeof(struct ipr_dump_ioa_type_entry) -
2952 sizeof(struct ipr_dump_entry_header);
2953 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2954 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2955 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2956 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2957 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2958 ucode_vpd->minor_release[1];
2959 driver_dump->hdr.num_entries++;
2960 }
2961
2962 /**
2963 * ipr_dump_version_data - Fill in the driver version in the dump.
2964 * @ioa_cfg: ioa config struct
2965 * @driver_dump: driver dump struct
2966 *
2967 * Return value:
2968 * nothing
2969 **/
2970 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2971 struct ipr_driver_dump *driver_dump)
2972 {
2973 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2974 driver_dump->version_entry.hdr.len =
2975 sizeof(struct ipr_dump_version_entry) -
2976 sizeof(struct ipr_dump_entry_header);
2977 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2978 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2979 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2980 driver_dump->hdr.num_entries++;
2981 }
2982
2983 /**
2984 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2985 * @ioa_cfg: ioa config struct
2986 * @driver_dump: driver dump struct
2987 *
2988 * Return value:
2989 * nothing
2990 **/
2991 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2992 struct ipr_driver_dump *driver_dump)
2993 {
2994 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2995 driver_dump->trace_entry.hdr.len =
2996 sizeof(struct ipr_dump_trace_entry) -
2997 sizeof(struct ipr_dump_entry_header);
2998 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2999 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3000 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3001 driver_dump->hdr.num_entries++;
3002 }
3003
3004 /**
3005 * ipr_dump_location_data - Fill in the IOA location in the dump.
3006 * @ioa_cfg: ioa config struct
3007 * @driver_dump: driver dump struct
3008 *
3009 * Return value:
3010 * nothing
3011 **/
3012 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3013 struct ipr_driver_dump *driver_dump)
3014 {
3015 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3016 driver_dump->location_entry.hdr.len =
3017 sizeof(struct ipr_dump_location_entry) -
3018 sizeof(struct ipr_dump_entry_header);
3019 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3020 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3021 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3022 driver_dump->hdr.num_entries++;
3023 }
3024
3025 /**
3026 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3027 * @ioa_cfg: ioa config struct
3028 * @dump: dump struct
3029 *
3030 * Return value:
3031 * nothing
3032 **/
3033 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3034 {
3035 unsigned long start_addr, sdt_word;
3036 unsigned long lock_flags = 0;
3037 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3038 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3039 u32 num_entries, max_num_entries, start_off, end_off;
3040 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3041 struct ipr_sdt *sdt;
3042 int valid = 1;
3043 int i;
3044
3045 ENTER;
3046
3047 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3048
3049 if (ioa_cfg->sdt_state != READ_DUMP) {
3050 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3051 return;
3052 }
3053
3054 if (ioa_cfg->sis64) {
3055 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3056 ssleep(IPR_DUMP_DELAY_SECONDS);
3057 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3058 }
3059
3060 start_addr = readl(ioa_cfg->ioa_mailbox);
3061
3062 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3063 dev_err(&ioa_cfg->pdev->dev,
3064 "Invalid dump table format: %lx\n", start_addr);
3065 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3066 return;
3067 }
3068
3069 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3070
3071 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3072
3073 /* Initialize the overall dump header */
3074 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3075 driver_dump->hdr.num_entries = 1;
3076 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3077 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3078 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3079 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3080
3081 ipr_dump_version_data(ioa_cfg, driver_dump);
3082 ipr_dump_location_data(ioa_cfg, driver_dump);
3083 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3084 ipr_dump_trace_data(ioa_cfg, driver_dump);
3085
3086 /* Update dump_header */
3087 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3088
3089 /* IOA Dump entry */
3090 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3091 ioa_dump->hdr.len = 0;
3092 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3093 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3094
3095 /* First entries in sdt are actually a list of dump addresses and
3096 lengths to gather the real dump data. sdt represents the pointer
3097 to the ioa generated dump table. Dump data will be extracted based
3098 on entries in this table */
3099 sdt = &ioa_dump->sdt;
3100
3101 if (ioa_cfg->sis64) {
3102 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3103 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3104 } else {
3105 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3106 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3107 }
3108
3109 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3110 (max_num_entries * sizeof(struct ipr_sdt_entry));
3111 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3112 bytes_to_copy / sizeof(__be32));
3113
3114 /* Smart Dump table is ready to use and the first entry is valid */
3115 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3116 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3117 dev_err(&ioa_cfg->pdev->dev,
3118 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3119 rc, be32_to_cpu(sdt->hdr.state));
3120 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3121 ioa_cfg->sdt_state = DUMP_OBTAINED;
3122 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3123 return;
3124 }
3125
3126 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3127
3128 if (num_entries > max_num_entries)
3129 num_entries = max_num_entries;
3130
3131 /* Update dump length to the actual data to be copied */
3132 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3133 if (ioa_cfg->sis64)
3134 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3135 else
3136 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3137
3138 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3139
3140 for (i = 0; i < num_entries; i++) {
3141 if (ioa_dump->hdr.len > max_dump_size) {
3142 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3143 break;
3144 }
3145
3146 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3147 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3148 if (ioa_cfg->sis64)
3149 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3150 else {
3151 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3152 end_off = be32_to_cpu(sdt->entry[i].end_token);
3153
3154 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3155 bytes_to_copy = end_off - start_off;
3156 else
3157 valid = 0;
3158 }
3159 if (valid) {
3160 if (bytes_to_copy > max_dump_size) {
3161 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3162 continue;
3163 }
3164
3165 /* Copy data from adapter to driver buffers */
3166 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3167 bytes_to_copy);
3168
3169 ioa_dump->hdr.len += bytes_copied;
3170
3171 if (bytes_copied != bytes_to_copy) {
3172 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3173 break;
3174 }
3175 }
3176 }
3177 }
3178
3179 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3180
3181 /* Update dump_header */
3182 driver_dump->hdr.len += ioa_dump->hdr.len;
3183 wmb();
3184 ioa_cfg->sdt_state = DUMP_OBTAINED;
3185 LEAVE;
3186 }
3187
3188 #else
3189 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3190 #endif
3191
3192 /**
3193 * ipr_release_dump - Free adapter dump memory
3194 * @kref: kref struct
3195 *
3196 * Return value:
3197 * nothing
3198 **/
3199 static void ipr_release_dump(struct kref *kref)
3200 {
3201 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3202 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3203 unsigned long lock_flags = 0;
3204 int i;
3205
3206 ENTER;
3207 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3208 ioa_cfg->dump = NULL;
3209 ioa_cfg->sdt_state = INACTIVE;
3210 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3211
3212 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3213 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3214
3215 vfree(dump->ioa_dump.ioa_data);
3216 kfree(dump);
3217 LEAVE;
3218 }
3219
3220 /**
3221 * ipr_worker_thread - Worker thread
3222 * @work: ioa config struct
3223 *
3224 * Called at task level from a work thread. This function takes care
3225 * of adding and removing device from the mid-layer as configuration
3226 * changes are detected by the adapter.
3227 *
3228 * Return value:
3229 * nothing
3230 **/
3231 static void ipr_worker_thread(struct work_struct *work)
3232 {
3233 unsigned long lock_flags;
3234 struct ipr_resource_entry *res;
3235 struct scsi_device *sdev;
3236 struct ipr_dump *dump;
3237 struct ipr_ioa_cfg *ioa_cfg =
3238 container_of(work, struct ipr_ioa_cfg, work_q);
3239 u8 bus, target, lun;
3240 int did_work;
3241
3242 ENTER;
3243 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3244
3245 if (ioa_cfg->sdt_state == READ_DUMP) {
3246 dump = ioa_cfg->dump;
3247 if (!dump) {
3248 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3249 return;
3250 }
3251 kref_get(&dump->kref);
3252 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3253 ipr_get_ioa_dump(ioa_cfg, dump);
3254 kref_put(&dump->kref, ipr_release_dump);
3255
3256 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3257 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3258 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3260 return;
3261 }
3262
3263 restart:
3264 do {
3265 did_work = 0;
3266 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
3267 !ioa_cfg->allow_ml_add_del) {
3268 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3269 return;
3270 }
3271
3272 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3273 if (res->del_from_ml && res->sdev) {
3274 did_work = 1;
3275 sdev = res->sdev;
3276 if (!scsi_device_get(sdev)) {
3277 if (!res->add_to_ml)
3278 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3279 else
3280 res->del_from_ml = 0;
3281 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3282 scsi_remove_device(sdev);
3283 scsi_device_put(sdev);
3284 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3285 }
3286 break;
3287 }
3288 }
3289 } while (did_work);
3290
3291 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3292 if (res->add_to_ml) {
3293 bus = res->bus;
3294 target = res->target;
3295 lun = res->lun;
3296 res->add_to_ml = 0;
3297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3298 scsi_add_device(ioa_cfg->host, bus, target, lun);
3299 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3300 goto restart;
3301 }
3302 }
3303
3304 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3305 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3306 LEAVE;
3307 }
3308
3309 #ifdef CONFIG_SCSI_IPR_TRACE
3310 /**
3311 * ipr_read_trace - Dump the adapter trace
3312 * @filp: open sysfs file
3313 * @kobj: kobject struct
3314 * @bin_attr: bin_attribute struct
3315 * @buf: buffer
3316 * @off: offset
3317 * @count: buffer size
3318 *
3319 * Return value:
3320 * number of bytes printed to buffer
3321 **/
3322 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3323 struct bin_attribute *bin_attr,
3324 char *buf, loff_t off, size_t count)
3325 {
3326 struct device *dev = container_of(kobj, struct device, kobj);
3327 struct Scsi_Host *shost = class_to_shost(dev);
3328 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3329 unsigned long lock_flags = 0;
3330 ssize_t ret;
3331
3332 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3333 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3334 IPR_TRACE_SIZE);
3335 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3336
3337 return ret;
3338 }
3339
3340 static struct bin_attribute ipr_trace_attr = {
3341 .attr = {
3342 .name = "trace",
3343 .mode = S_IRUGO,
3344 },
3345 .size = 0,
3346 .read = ipr_read_trace,
3347 };
3348 #endif
3349
3350 /**
3351 * ipr_show_fw_version - Show the firmware version
3352 * @dev: class device struct
3353 * @buf: buffer
3354 *
3355 * Return value:
3356 * number of bytes printed to buffer
3357 **/
3358 static ssize_t ipr_show_fw_version(struct device *dev,
3359 struct device_attribute *attr, char *buf)
3360 {
3361 struct Scsi_Host *shost = class_to_shost(dev);
3362 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3363 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3364 unsigned long lock_flags = 0;
3365 int len;
3366
3367 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3368 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3369 ucode_vpd->major_release, ucode_vpd->card_type,
3370 ucode_vpd->minor_release[0],
3371 ucode_vpd->minor_release[1]);
3372 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3373 return len;
3374 }
3375
3376 static struct device_attribute ipr_fw_version_attr = {
3377 .attr = {
3378 .name = "fw_version",
3379 .mode = S_IRUGO,
3380 },
3381 .show = ipr_show_fw_version,
3382 };
3383
3384 /**
3385 * ipr_show_log_level - Show the adapter's error logging level
3386 * @dev: class device struct
3387 * @buf: buffer
3388 *
3389 * Return value:
3390 * number of bytes printed to buffer
3391 **/
3392 static ssize_t ipr_show_log_level(struct device *dev,
3393 struct device_attribute *attr, char *buf)
3394 {
3395 struct Scsi_Host *shost = class_to_shost(dev);
3396 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3397 unsigned long lock_flags = 0;
3398 int len;
3399
3400 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3401 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3402 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3403 return len;
3404 }
3405
3406 /**
3407 * ipr_store_log_level - Change the adapter's error logging level
3408 * @dev: class device struct
3409 * @buf: buffer
3410 *
3411 * Return value:
3412 * number of bytes printed to buffer
3413 **/
3414 static ssize_t ipr_store_log_level(struct device *dev,
3415 struct device_attribute *attr,
3416 const char *buf, size_t count)
3417 {
3418 struct Scsi_Host *shost = class_to_shost(dev);
3419 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3420 unsigned long lock_flags = 0;
3421
3422 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3423 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3424 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3425 return strlen(buf);
3426 }
3427
3428 static struct device_attribute ipr_log_level_attr = {
3429 .attr = {
3430 .name = "log_level",
3431 .mode = S_IRUGO | S_IWUSR,
3432 },
3433 .show = ipr_show_log_level,
3434 .store = ipr_store_log_level
3435 };
3436
3437 /**
3438 * ipr_store_diagnostics - IOA Diagnostics interface
3439 * @dev: device struct
3440 * @buf: buffer
3441 * @count: buffer size
3442 *
3443 * This function will reset the adapter and wait a reasonable
3444 * amount of time for any errors that the adapter might log.
3445 *
3446 * Return value:
3447 * count on success / other on failure
3448 **/
3449 static ssize_t ipr_store_diagnostics(struct device *dev,
3450 struct device_attribute *attr,
3451 const char *buf, size_t count)
3452 {
3453 struct Scsi_Host *shost = class_to_shost(dev);
3454 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3455 unsigned long lock_flags = 0;
3456 int rc = count;
3457
3458 if (!capable(CAP_SYS_ADMIN))
3459 return -EACCES;
3460
3461 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3462 while (ioa_cfg->in_reset_reload) {
3463 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3464 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3465 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3466 }
3467
3468 ioa_cfg->errors_logged = 0;
3469 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3470
3471 if (ioa_cfg->in_reset_reload) {
3472 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3473 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3474
3475 /* Wait for a second for any errors to be logged */
3476 msleep(1000);
3477 } else {
3478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3479 return -EIO;
3480 }
3481
3482 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3483 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3484 rc = -EIO;
3485 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3486
3487 return rc;
3488 }
3489
3490 static struct device_attribute ipr_diagnostics_attr = {
3491 .attr = {
3492 .name = "run_diagnostics",
3493 .mode = S_IWUSR,
3494 },
3495 .store = ipr_store_diagnostics
3496 };
3497
3498 /**
3499 * ipr_show_adapter_state - Show the adapter's state
3500 * @class_dev: device struct
3501 * @buf: buffer
3502 *
3503 * Return value:
3504 * number of bytes printed to buffer
3505 **/
3506 static ssize_t ipr_show_adapter_state(struct device *dev,
3507 struct device_attribute *attr, char *buf)
3508 {
3509 struct Scsi_Host *shost = class_to_shost(dev);
3510 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3511 unsigned long lock_flags = 0;
3512 int len;
3513
3514 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3515 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3516 len = snprintf(buf, PAGE_SIZE, "offline\n");
3517 else
3518 len = snprintf(buf, PAGE_SIZE, "online\n");
3519 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3520 return len;
3521 }
3522
3523 /**
3524 * ipr_store_adapter_state - Change adapter state
3525 * @dev: device struct
3526 * @buf: buffer
3527 * @count: buffer size
3528 *
3529 * This function will change the adapter's state.
3530 *
3531 * Return value:
3532 * count on success / other on failure
3533 **/
3534 static ssize_t ipr_store_adapter_state(struct device *dev,
3535 struct device_attribute *attr,
3536 const char *buf, size_t count)
3537 {
3538 struct Scsi_Host *shost = class_to_shost(dev);
3539 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3540 unsigned long lock_flags;
3541 int result = count, i;
3542
3543 if (!capable(CAP_SYS_ADMIN))
3544 return -EACCES;
3545
3546 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3547 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3548 !strncmp(buf, "online", 6)) {
3549 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3550 spin_lock(&ioa_cfg->hrrq[i]._lock);
3551 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3552 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3553 }
3554 wmb();
3555 ioa_cfg->reset_retries = 0;
3556 ioa_cfg->in_ioa_bringdown = 0;
3557 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3558 }
3559 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3560 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3561
3562 return result;
3563 }
3564
3565 static struct device_attribute ipr_ioa_state_attr = {
3566 .attr = {
3567 .name = "online_state",
3568 .mode = S_IRUGO | S_IWUSR,
3569 },
3570 .show = ipr_show_adapter_state,
3571 .store = ipr_store_adapter_state
3572 };
3573
3574 /**
3575 * ipr_store_reset_adapter - Reset the adapter
3576 * @dev: device struct
3577 * @buf: buffer
3578 * @count: buffer size
3579 *
3580 * This function will reset the adapter.
3581 *
3582 * Return value:
3583 * count on success / other on failure
3584 **/
3585 static ssize_t ipr_store_reset_adapter(struct device *dev,
3586 struct device_attribute *attr,
3587 const char *buf, size_t count)
3588 {
3589 struct Scsi_Host *shost = class_to_shost(dev);
3590 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3591 unsigned long lock_flags;
3592 int result = count;
3593
3594 if (!capable(CAP_SYS_ADMIN))
3595 return -EACCES;
3596
3597 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3598 if (!ioa_cfg->in_reset_reload)
3599 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3600 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3601 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3602
3603 return result;
3604 }
3605
3606 static struct device_attribute ipr_ioa_reset_attr = {
3607 .attr = {
3608 .name = "reset_host",
3609 .mode = S_IWUSR,
3610 },
3611 .store = ipr_store_reset_adapter
3612 };
3613
3614 static int ipr_iopoll(struct blk_iopoll *iop, int budget);
3615 /**
3616 * ipr_show_iopoll_weight - Show ipr polling mode
3617 * @dev: class device struct
3618 * @buf: buffer
3619 *
3620 * Return value:
3621 * number of bytes printed to buffer
3622 **/
3623 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3624 struct device_attribute *attr, char *buf)
3625 {
3626 struct Scsi_Host *shost = class_to_shost(dev);
3627 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3628 unsigned long lock_flags = 0;
3629 int len;
3630
3631 spin_lock_irqsave(shost->host_lock, lock_flags);
3632 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3633 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3634
3635 return len;
3636 }
3637
3638 /**
3639 * ipr_store_iopoll_weight - Change the adapter's polling mode
3640 * @dev: class device struct
3641 * @buf: buffer
3642 *
3643 * Return value:
3644 * number of bytes printed to buffer
3645 **/
3646 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3647 struct device_attribute *attr,
3648 const char *buf, size_t count)
3649 {
3650 struct Scsi_Host *shost = class_to_shost(dev);
3651 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3652 unsigned long user_iopoll_weight;
3653 unsigned long lock_flags = 0;
3654 int i;
3655
3656 if (!ioa_cfg->sis64) {
3657 dev_info(&ioa_cfg->pdev->dev, "blk-iopoll not supported on this adapter\n");
3658 return -EINVAL;
3659 }
3660 if (kstrtoul(buf, 10, &user_iopoll_weight))
3661 return -EINVAL;
3662
3663 if (user_iopoll_weight > 256) {
3664 dev_info(&ioa_cfg->pdev->dev, "Invalid blk-iopoll weight. It must be less than 256\n");
3665 return -EINVAL;
3666 }
3667
3668 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3669 dev_info(&ioa_cfg->pdev->dev, "Current blk-iopoll weight has the same weight\n");
3670 return strlen(buf);
3671 }
3672
3673 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3674 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3675 blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
3676 }
3677
3678 spin_lock_irqsave(shost->host_lock, lock_flags);
3679 ioa_cfg->iopoll_weight = user_iopoll_weight;
3680 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3681 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3682 blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
3683 ioa_cfg->iopoll_weight, ipr_iopoll);
3684 blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
3685 }
3686 }
3687 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3688
3689 return strlen(buf);
3690 }
3691
3692 static struct device_attribute ipr_iopoll_weight_attr = {
3693 .attr = {
3694 .name = "iopoll_weight",
3695 .mode = S_IRUGO | S_IWUSR,
3696 },
3697 .show = ipr_show_iopoll_weight,
3698 .store = ipr_store_iopoll_weight
3699 };
3700
3701 /**
3702 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3703 * @buf_len: buffer length
3704 *
3705 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3706 * list to use for microcode download
3707 *
3708 * Return value:
3709 * pointer to sglist / NULL on failure
3710 **/
3711 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3712 {
3713 int sg_size, order, bsize_elem, num_elem, i, j;
3714 struct ipr_sglist *sglist;
3715 struct scatterlist *scatterlist;
3716 struct page *page;
3717
3718 /* Get the minimum size per scatter/gather element */
3719 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3720
3721 /* Get the actual size per element */
3722 order = get_order(sg_size);
3723
3724 /* Determine the actual number of bytes per element */
3725 bsize_elem = PAGE_SIZE * (1 << order);
3726
3727 /* Determine the actual number of sg entries needed */
3728 if (buf_len % bsize_elem)
3729 num_elem = (buf_len / bsize_elem) + 1;
3730 else
3731 num_elem = buf_len / bsize_elem;
3732
3733 /* Allocate a scatter/gather list for the DMA */
3734 sglist = kzalloc(sizeof(struct ipr_sglist) +
3735 (sizeof(struct scatterlist) * (num_elem - 1)),
3736 GFP_KERNEL);
3737
3738 if (sglist == NULL) {
3739 ipr_trace;
3740 return NULL;
3741 }
3742
3743 scatterlist = sglist->scatterlist;
3744 sg_init_table(scatterlist, num_elem);
3745
3746 sglist->order = order;
3747 sglist->num_sg = num_elem;
3748
3749 /* Allocate a bunch of sg elements */
3750 for (i = 0; i < num_elem; i++) {
3751 page = alloc_pages(GFP_KERNEL, order);
3752 if (!page) {
3753 ipr_trace;
3754
3755 /* Free up what we already allocated */
3756 for (j = i - 1; j >= 0; j--)
3757 __free_pages(sg_page(&scatterlist[j]), order);
3758 kfree(sglist);
3759 return NULL;
3760 }
3761
3762 sg_set_page(&scatterlist[i], page, 0, 0);
3763 }
3764
3765 return sglist;
3766 }
3767
3768 /**
3769 * ipr_free_ucode_buffer - Frees a microcode download buffer
3770 * @p_dnld: scatter/gather list pointer
3771 *
3772 * Free a DMA'able ucode download buffer previously allocated with
3773 * ipr_alloc_ucode_buffer
3774 *
3775 * Return value:
3776 * nothing
3777 **/
3778 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3779 {
3780 int i;
3781
3782 for (i = 0; i < sglist->num_sg; i++)
3783 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3784
3785 kfree(sglist);
3786 }
3787
3788 /**
3789 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3790 * @sglist: scatter/gather list pointer
3791 * @buffer: buffer pointer
3792 * @len: buffer length
3793 *
3794 * Copy a microcode image from a user buffer into a buffer allocated by
3795 * ipr_alloc_ucode_buffer
3796 *
3797 * Return value:
3798 * 0 on success / other on failure
3799 **/
3800 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3801 u8 *buffer, u32 len)
3802 {
3803 int bsize_elem, i, result = 0;
3804 struct scatterlist *scatterlist;
3805 void *kaddr;
3806
3807 /* Determine the actual number of bytes per element */
3808 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3809
3810 scatterlist = sglist->scatterlist;
3811
3812 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3813 struct page *page = sg_page(&scatterlist[i]);
3814
3815 kaddr = kmap(page);
3816 memcpy(kaddr, buffer, bsize_elem);
3817 kunmap(page);
3818
3819 scatterlist[i].length = bsize_elem;
3820
3821 if (result != 0) {
3822 ipr_trace;
3823 return result;
3824 }
3825 }
3826
3827 if (len % bsize_elem) {
3828 struct page *page = sg_page(&scatterlist[i]);
3829
3830 kaddr = kmap(page);
3831 memcpy(kaddr, buffer, len % bsize_elem);
3832 kunmap(page);
3833
3834 scatterlist[i].length = len % bsize_elem;
3835 }
3836
3837 sglist->buffer_len = len;
3838 return result;
3839 }
3840
3841 /**
3842 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3843 * @ipr_cmd: ipr command struct
3844 * @sglist: scatter/gather list
3845 *
3846 * Builds a microcode download IOA data list (IOADL).
3847 *
3848 **/
3849 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3850 struct ipr_sglist *sglist)
3851 {
3852 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3853 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3854 struct scatterlist *scatterlist = sglist->scatterlist;
3855 int i;
3856
3857 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3858 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3859 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3860
3861 ioarcb->ioadl_len =
3862 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3863 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3864 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3865 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3866 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3867 }
3868
3869 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3870 }
3871
3872 /**
3873 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3874 * @ipr_cmd: ipr command struct
3875 * @sglist: scatter/gather list
3876 *
3877 * Builds a microcode download IOA data list (IOADL).
3878 *
3879 **/
3880 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3881 struct ipr_sglist *sglist)
3882 {
3883 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3884 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3885 struct scatterlist *scatterlist = sglist->scatterlist;
3886 int i;
3887
3888 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3889 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3890 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3891
3892 ioarcb->ioadl_len =
3893 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3894
3895 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3896 ioadl[i].flags_and_data_len =
3897 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3898 ioadl[i].address =
3899 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3900 }
3901
3902 ioadl[i-1].flags_and_data_len |=
3903 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3904 }
3905
3906 /**
3907 * ipr_update_ioa_ucode - Update IOA's microcode
3908 * @ioa_cfg: ioa config struct
3909 * @sglist: scatter/gather list
3910 *
3911 * Initiate an adapter reset to update the IOA's microcode
3912 *
3913 * Return value:
3914 * 0 on success / -EIO on failure
3915 **/
3916 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3917 struct ipr_sglist *sglist)
3918 {
3919 unsigned long lock_flags;
3920
3921 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3922 while (ioa_cfg->in_reset_reload) {
3923 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3924 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3925 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3926 }
3927
3928 if (ioa_cfg->ucode_sglist) {
3929 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3930 dev_err(&ioa_cfg->pdev->dev,
3931 "Microcode download already in progress\n");
3932 return -EIO;
3933 }
3934
3935 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3936 sglist->num_sg, DMA_TO_DEVICE);
3937
3938 if (!sglist->num_dma_sg) {
3939 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3940 dev_err(&ioa_cfg->pdev->dev,
3941 "Failed to map microcode download buffer!\n");
3942 return -EIO;
3943 }
3944
3945 ioa_cfg->ucode_sglist = sglist;
3946 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3947 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3948 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3949
3950 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3951 ioa_cfg->ucode_sglist = NULL;
3952 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3953 return 0;
3954 }
3955
3956 /**
3957 * ipr_store_update_fw - Update the firmware on the adapter
3958 * @class_dev: device struct
3959 * @buf: buffer
3960 * @count: buffer size
3961 *
3962 * This function will update the firmware on the adapter.
3963 *
3964 * Return value:
3965 * count on success / other on failure
3966 **/
3967 static ssize_t ipr_store_update_fw(struct device *dev,
3968 struct device_attribute *attr,
3969 const char *buf, size_t count)
3970 {
3971 struct Scsi_Host *shost = class_to_shost(dev);
3972 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3973 struct ipr_ucode_image_header *image_hdr;
3974 const struct firmware *fw_entry;
3975 struct ipr_sglist *sglist;
3976 char fname[100];
3977 char *src;
3978 int len, result, dnld_size;
3979
3980 if (!capable(CAP_SYS_ADMIN))
3981 return -EACCES;
3982
3983 len = snprintf(fname, 99, "%s", buf);
3984 fname[len-1] = '\0';
3985
3986 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3987 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3988 return -EIO;
3989 }
3990
3991 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3992
3993 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3994 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3995 sglist = ipr_alloc_ucode_buffer(dnld_size);
3996
3997 if (!sglist) {
3998 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3999 release_firmware(fw_entry);
4000 return -ENOMEM;
4001 }
4002
4003 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4004
4005 if (result) {
4006 dev_err(&ioa_cfg->pdev->dev,
4007 "Microcode buffer copy to DMA buffer failed\n");
4008 goto out;
4009 }
4010
4011 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4012
4013 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4014
4015 if (!result)
4016 result = count;
4017 out:
4018 ipr_free_ucode_buffer(sglist);
4019 release_firmware(fw_entry);
4020 return result;
4021 }
4022
4023 static struct device_attribute ipr_update_fw_attr = {
4024 .attr = {
4025 .name = "update_fw",
4026 .mode = S_IWUSR,
4027 },
4028 .store = ipr_store_update_fw
4029 };
4030
4031 /**
4032 * ipr_show_fw_type - Show the adapter's firmware type.
4033 * @dev: class device struct
4034 * @buf: buffer
4035 *
4036 * Return value:
4037 * number of bytes printed to buffer
4038 **/
4039 static ssize_t ipr_show_fw_type(struct device *dev,
4040 struct device_attribute *attr, char *buf)
4041 {
4042 struct Scsi_Host *shost = class_to_shost(dev);
4043 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4044 unsigned long lock_flags = 0;
4045 int len;
4046
4047 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4048 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4050 return len;
4051 }
4052
4053 static struct device_attribute ipr_ioa_fw_type_attr = {
4054 .attr = {
4055 .name = "fw_type",
4056 .mode = S_IRUGO,
4057 },
4058 .show = ipr_show_fw_type
4059 };
4060
4061 static struct device_attribute *ipr_ioa_attrs[] = {
4062 &ipr_fw_version_attr,
4063 &ipr_log_level_attr,
4064 &ipr_diagnostics_attr,
4065 &ipr_ioa_state_attr,
4066 &ipr_ioa_reset_attr,
4067 &ipr_update_fw_attr,
4068 &ipr_ioa_fw_type_attr,
4069 &ipr_iopoll_weight_attr,
4070 NULL,
4071 };
4072
4073 #ifdef CONFIG_SCSI_IPR_DUMP
4074 /**
4075 * ipr_read_dump - Dump the adapter
4076 * @filp: open sysfs file
4077 * @kobj: kobject struct
4078 * @bin_attr: bin_attribute struct
4079 * @buf: buffer
4080 * @off: offset
4081 * @count: buffer size
4082 *
4083 * Return value:
4084 * number of bytes printed to buffer
4085 **/
4086 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4087 struct bin_attribute *bin_attr,
4088 char *buf, loff_t off, size_t count)
4089 {
4090 struct device *cdev = container_of(kobj, struct device, kobj);
4091 struct Scsi_Host *shost = class_to_shost(cdev);
4092 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4093 struct ipr_dump *dump;
4094 unsigned long lock_flags = 0;
4095 char *src;
4096 int len, sdt_end;
4097 size_t rc = count;
4098
4099 if (!capable(CAP_SYS_ADMIN))
4100 return -EACCES;
4101
4102 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4103 dump = ioa_cfg->dump;
4104
4105 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4106 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4107 return 0;
4108 }
4109 kref_get(&dump->kref);
4110 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4111
4112 if (off > dump->driver_dump.hdr.len) {
4113 kref_put(&dump->kref, ipr_release_dump);
4114 return 0;
4115 }
4116
4117 if (off + count > dump->driver_dump.hdr.len) {
4118 count = dump->driver_dump.hdr.len - off;
4119 rc = count;
4120 }
4121
4122 if (count && off < sizeof(dump->driver_dump)) {
4123 if (off + count > sizeof(dump->driver_dump))
4124 len = sizeof(dump->driver_dump) - off;
4125 else
4126 len = count;
4127 src = (u8 *)&dump->driver_dump + off;
4128 memcpy(buf, src, len);
4129 buf += len;
4130 off += len;
4131 count -= len;
4132 }
4133
4134 off -= sizeof(dump->driver_dump);
4135
4136 if (ioa_cfg->sis64)
4137 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4138 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4139 sizeof(struct ipr_sdt_entry));
4140 else
4141 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4142 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4143
4144 if (count && off < sdt_end) {
4145 if (off + count > sdt_end)
4146 len = sdt_end - off;
4147 else
4148 len = count;
4149 src = (u8 *)&dump->ioa_dump + off;
4150 memcpy(buf, src, len);
4151 buf += len;
4152 off += len;
4153 count -= len;
4154 }
4155
4156 off -= sdt_end;
4157
4158 while (count) {
4159 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4160 len = PAGE_ALIGN(off) - off;
4161 else
4162 len = count;
4163 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4164 src += off & ~PAGE_MASK;
4165 memcpy(buf, src, len);
4166 buf += len;
4167 off += len;
4168 count -= len;
4169 }
4170
4171 kref_put(&dump->kref, ipr_release_dump);
4172 return rc;
4173 }
4174
4175 /**
4176 * ipr_alloc_dump - Prepare for adapter dump
4177 * @ioa_cfg: ioa config struct
4178 *
4179 * Return value:
4180 * 0 on success / other on failure
4181 **/
4182 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4183 {
4184 struct ipr_dump *dump;
4185 __be32 **ioa_data;
4186 unsigned long lock_flags = 0;
4187
4188 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4189
4190 if (!dump) {
4191 ipr_err("Dump memory allocation failed\n");
4192 return -ENOMEM;
4193 }
4194
4195 if (ioa_cfg->sis64)
4196 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4197 else
4198 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4199
4200 if (!ioa_data) {
4201 ipr_err("Dump memory allocation failed\n");
4202 kfree(dump);
4203 return -ENOMEM;
4204 }
4205
4206 dump->ioa_dump.ioa_data = ioa_data;
4207
4208 kref_init(&dump->kref);
4209 dump->ioa_cfg = ioa_cfg;
4210
4211 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4212
4213 if (INACTIVE != ioa_cfg->sdt_state) {
4214 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4215 vfree(dump->ioa_dump.ioa_data);
4216 kfree(dump);
4217 return 0;
4218 }
4219
4220 ioa_cfg->dump = dump;
4221 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4222 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4223 ioa_cfg->dump_taken = 1;
4224 schedule_work(&ioa_cfg->work_q);
4225 }
4226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4227
4228 return 0;
4229 }
4230
4231 /**
4232 * ipr_free_dump - Free adapter dump memory
4233 * @ioa_cfg: ioa config struct
4234 *
4235 * Return value:
4236 * 0 on success / other on failure
4237 **/
4238 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4239 {
4240 struct ipr_dump *dump;
4241 unsigned long lock_flags = 0;
4242
4243 ENTER;
4244
4245 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4246 dump = ioa_cfg->dump;
4247 if (!dump) {
4248 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4249 return 0;
4250 }
4251
4252 ioa_cfg->dump = NULL;
4253 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4254
4255 kref_put(&dump->kref, ipr_release_dump);
4256
4257 LEAVE;
4258 return 0;
4259 }
4260
4261 /**
4262 * ipr_write_dump - Setup dump state of adapter
4263 * @filp: open sysfs file
4264 * @kobj: kobject struct
4265 * @bin_attr: bin_attribute struct
4266 * @buf: buffer
4267 * @off: offset
4268 * @count: buffer size
4269 *
4270 * Return value:
4271 * number of bytes printed to buffer
4272 **/
4273 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4274 struct bin_attribute *bin_attr,
4275 char *buf, loff_t off, size_t count)
4276 {
4277 struct device *cdev = container_of(kobj, struct device, kobj);
4278 struct Scsi_Host *shost = class_to_shost(cdev);
4279 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4280 int rc;
4281
4282 if (!capable(CAP_SYS_ADMIN))
4283 return -EACCES;
4284
4285 if (buf[0] == '1')
4286 rc = ipr_alloc_dump(ioa_cfg);
4287 else if (buf[0] == '0')
4288 rc = ipr_free_dump(ioa_cfg);
4289 else
4290 return -EINVAL;
4291
4292 if (rc)
4293 return rc;
4294 else
4295 return count;
4296 }
4297
4298 static struct bin_attribute ipr_dump_attr = {
4299 .attr = {
4300 .name = "dump",
4301 .mode = S_IRUSR | S_IWUSR,
4302 },
4303 .size = 0,
4304 .read = ipr_read_dump,
4305 .write = ipr_write_dump
4306 };
4307 #else
4308 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4309 #endif
4310
4311 /**
4312 * ipr_change_queue_depth - Change the device's queue depth
4313 * @sdev: scsi device struct
4314 * @qdepth: depth to set
4315 * @reason: calling context
4316 *
4317 * Return value:
4318 * actual depth set
4319 **/
4320 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4321 int reason)
4322 {
4323 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4324 struct ipr_resource_entry *res;
4325 unsigned long lock_flags = 0;
4326
4327 if (reason != SCSI_QDEPTH_DEFAULT)
4328 return -EOPNOTSUPP;
4329
4330 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4331 res = (struct ipr_resource_entry *)sdev->hostdata;
4332
4333 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4334 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4335 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4336
4337 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4338 return sdev->queue_depth;
4339 }
4340
4341 /**
4342 * ipr_change_queue_type - Change the device's queue type
4343 * @dsev: scsi device struct
4344 * @tag_type: type of tags to use
4345 *
4346 * Return value:
4347 * actual queue type set
4348 **/
4349 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4350 {
4351 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4352 struct ipr_resource_entry *res;
4353 unsigned long lock_flags = 0;
4354
4355 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4356 res = (struct ipr_resource_entry *)sdev->hostdata;
4357
4358 if (res) {
4359 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4360 /*
4361 * We don't bother quiescing the device here since the
4362 * adapter firmware does it for us.
4363 */
4364 scsi_set_tag_type(sdev, tag_type);
4365
4366 if (tag_type)
4367 scsi_activate_tcq(sdev, sdev->queue_depth);
4368 else
4369 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4370 } else
4371 tag_type = 0;
4372 } else
4373 tag_type = 0;
4374
4375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4376 return tag_type;
4377 }
4378
4379 /**
4380 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4381 * @dev: device struct
4382 * @attr: device attribute structure
4383 * @buf: buffer
4384 *
4385 * Return value:
4386 * number of bytes printed to buffer
4387 **/
4388 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4389 {
4390 struct scsi_device *sdev = to_scsi_device(dev);
4391 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4392 struct ipr_resource_entry *res;
4393 unsigned long lock_flags = 0;
4394 ssize_t len = -ENXIO;
4395
4396 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4397 res = (struct ipr_resource_entry *)sdev->hostdata;
4398 if (res)
4399 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4401 return len;
4402 }
4403
4404 static struct device_attribute ipr_adapter_handle_attr = {
4405 .attr = {
4406 .name = "adapter_handle",
4407 .mode = S_IRUSR,
4408 },
4409 .show = ipr_show_adapter_handle
4410 };
4411
4412 /**
4413 * ipr_show_resource_path - Show the resource path or the resource address for
4414 * this device.
4415 * @dev: device struct
4416 * @attr: device attribute structure
4417 * @buf: buffer
4418 *
4419 * Return value:
4420 * number of bytes printed to buffer
4421 **/
4422 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4423 {
4424 struct scsi_device *sdev = to_scsi_device(dev);
4425 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4426 struct ipr_resource_entry *res;
4427 unsigned long lock_flags = 0;
4428 ssize_t len = -ENXIO;
4429 char buffer[IPR_MAX_RES_PATH_LENGTH];
4430
4431 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4432 res = (struct ipr_resource_entry *)sdev->hostdata;
4433 if (res && ioa_cfg->sis64)
4434 len = snprintf(buf, PAGE_SIZE, "%s\n",
4435 __ipr_format_res_path(res->res_path, buffer,
4436 sizeof(buffer)));
4437 else if (res)
4438 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4439 res->bus, res->target, res->lun);
4440
4441 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4442 return len;
4443 }
4444
4445 static struct device_attribute ipr_resource_path_attr = {
4446 .attr = {
4447 .name = "resource_path",
4448 .mode = S_IRUGO,
4449 },
4450 .show = ipr_show_resource_path
4451 };
4452
4453 /**
4454 * ipr_show_device_id - Show the device_id for this device.
4455 * @dev: device struct
4456 * @attr: device attribute structure
4457 * @buf: buffer
4458 *
4459 * Return value:
4460 * number of bytes printed to buffer
4461 **/
4462 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4463 {
4464 struct scsi_device *sdev = to_scsi_device(dev);
4465 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4466 struct ipr_resource_entry *res;
4467 unsigned long lock_flags = 0;
4468 ssize_t len = -ENXIO;
4469
4470 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4471 res = (struct ipr_resource_entry *)sdev->hostdata;
4472 if (res && ioa_cfg->sis64)
4473 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->dev_id);
4474 else if (res)
4475 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4476
4477 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4478 return len;
4479 }
4480
4481 static struct device_attribute ipr_device_id_attr = {
4482 .attr = {
4483 .name = "device_id",
4484 .mode = S_IRUGO,
4485 },
4486 .show = ipr_show_device_id
4487 };
4488
4489 /**
4490 * ipr_show_resource_type - Show the resource type for this device.
4491 * @dev: device struct
4492 * @attr: device attribute structure
4493 * @buf: buffer
4494 *
4495 * Return value:
4496 * number of bytes printed to buffer
4497 **/
4498 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4499 {
4500 struct scsi_device *sdev = to_scsi_device(dev);
4501 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4502 struct ipr_resource_entry *res;
4503 unsigned long lock_flags = 0;
4504 ssize_t len = -ENXIO;
4505
4506 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4507 res = (struct ipr_resource_entry *)sdev->hostdata;
4508
4509 if (res)
4510 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4511
4512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4513 return len;
4514 }
4515
4516 static struct device_attribute ipr_resource_type_attr = {
4517 .attr = {
4518 .name = "resource_type",
4519 .mode = S_IRUGO,
4520 },
4521 .show = ipr_show_resource_type
4522 };
4523
4524 static struct device_attribute *ipr_dev_attrs[] = {
4525 &ipr_adapter_handle_attr,
4526 &ipr_resource_path_attr,
4527 &ipr_device_id_attr,
4528 &ipr_resource_type_attr,
4529 NULL,
4530 };
4531
4532 /**
4533 * ipr_biosparam - Return the HSC mapping
4534 * @sdev: scsi device struct
4535 * @block_device: block device pointer
4536 * @capacity: capacity of the device
4537 * @parm: Array containing returned HSC values.
4538 *
4539 * This function generates the HSC parms that fdisk uses.
4540 * We want to make sure we return something that places partitions
4541 * on 4k boundaries for best performance with the IOA.
4542 *
4543 * Return value:
4544 * 0 on success
4545 **/
4546 static int ipr_biosparam(struct scsi_device *sdev,
4547 struct block_device *block_device,
4548 sector_t capacity, int *parm)
4549 {
4550 int heads, sectors;
4551 sector_t cylinders;
4552
4553 heads = 128;
4554 sectors = 32;
4555
4556 cylinders = capacity;
4557 sector_div(cylinders, (128 * 32));
4558
4559 /* return result */
4560 parm[0] = heads;
4561 parm[1] = sectors;
4562 parm[2] = cylinders;
4563
4564 return 0;
4565 }
4566
4567 /**
4568 * ipr_find_starget - Find target based on bus/target.
4569 * @starget: scsi target struct
4570 *
4571 * Return value:
4572 * resource entry pointer if found / NULL if not found
4573 **/
4574 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4575 {
4576 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4577 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4578 struct ipr_resource_entry *res;
4579
4580 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4581 if ((res->bus == starget->channel) &&
4582 (res->target == starget->id)) {
4583 return res;
4584 }
4585 }
4586
4587 return NULL;
4588 }
4589
4590 static struct ata_port_info sata_port_info;
4591
4592 /**
4593 * ipr_target_alloc - Prepare for commands to a SCSI target
4594 * @starget: scsi target struct
4595 *
4596 * If the device is a SATA device, this function allocates an
4597 * ATA port with libata, else it does nothing.
4598 *
4599 * Return value:
4600 * 0 on success / non-0 on failure
4601 **/
4602 static int ipr_target_alloc(struct scsi_target *starget)
4603 {
4604 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4605 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4606 struct ipr_sata_port *sata_port;
4607 struct ata_port *ap;
4608 struct ipr_resource_entry *res;
4609 unsigned long lock_flags;
4610
4611 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4612 res = ipr_find_starget(starget);
4613 starget->hostdata = NULL;
4614
4615 if (res && ipr_is_gata(res)) {
4616 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4617 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4618 if (!sata_port)
4619 return -ENOMEM;
4620
4621 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4622 if (ap) {
4623 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4624 sata_port->ioa_cfg = ioa_cfg;
4625 sata_port->ap = ap;
4626 sata_port->res = res;
4627
4628 res->sata_port = sata_port;
4629 ap->private_data = sata_port;
4630 starget->hostdata = sata_port;
4631 } else {
4632 kfree(sata_port);
4633 return -ENOMEM;
4634 }
4635 }
4636 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4637
4638 return 0;
4639 }
4640
4641 /**
4642 * ipr_target_destroy - Destroy a SCSI target
4643 * @starget: scsi target struct
4644 *
4645 * If the device was a SATA device, this function frees the libata
4646 * ATA port, else it does nothing.
4647 *
4648 **/
4649 static void ipr_target_destroy(struct scsi_target *starget)
4650 {
4651 struct ipr_sata_port *sata_port = starget->hostdata;
4652 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4653 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4654
4655 if (ioa_cfg->sis64) {
4656 if (!ipr_find_starget(starget)) {
4657 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4658 clear_bit(starget->id, ioa_cfg->array_ids);
4659 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4660 clear_bit(starget->id, ioa_cfg->vset_ids);
4661 else if (starget->channel == 0)
4662 clear_bit(starget->id, ioa_cfg->target_ids);
4663 }
4664 }
4665
4666 if (sata_port) {
4667 starget->hostdata = NULL;
4668 ata_sas_port_destroy(sata_port->ap);
4669 kfree(sata_port);
4670 }
4671 }
4672
4673 /**
4674 * ipr_find_sdev - Find device based on bus/target/lun.
4675 * @sdev: scsi device struct
4676 *
4677 * Return value:
4678 * resource entry pointer if found / NULL if not found
4679 **/
4680 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4681 {
4682 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4683 struct ipr_resource_entry *res;
4684
4685 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4686 if ((res->bus == sdev->channel) &&
4687 (res->target == sdev->id) &&
4688 (res->lun == sdev->lun))
4689 return res;
4690 }
4691
4692 return NULL;
4693 }
4694
4695 /**
4696 * ipr_slave_destroy - Unconfigure a SCSI device
4697 * @sdev: scsi device struct
4698 *
4699 * Return value:
4700 * nothing
4701 **/
4702 static void ipr_slave_destroy(struct scsi_device *sdev)
4703 {
4704 struct ipr_resource_entry *res;
4705 struct ipr_ioa_cfg *ioa_cfg;
4706 unsigned long lock_flags = 0;
4707
4708 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4709
4710 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4711 res = (struct ipr_resource_entry *) sdev->hostdata;
4712 if (res) {
4713 if (res->sata_port)
4714 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4715 sdev->hostdata = NULL;
4716 res->sdev = NULL;
4717 res->sata_port = NULL;
4718 }
4719 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4720 }
4721
4722 /**
4723 * ipr_slave_configure - Configure a SCSI device
4724 * @sdev: scsi device struct
4725 *
4726 * This function configures the specified scsi device.
4727 *
4728 * Return value:
4729 * 0 on success
4730 **/
4731 static int ipr_slave_configure(struct scsi_device *sdev)
4732 {
4733 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4734 struct ipr_resource_entry *res;
4735 struct ata_port *ap = NULL;
4736 unsigned long lock_flags = 0;
4737 char buffer[IPR_MAX_RES_PATH_LENGTH];
4738
4739 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4740 res = sdev->hostdata;
4741 if (res) {
4742 if (ipr_is_af_dasd_device(res))
4743 sdev->type = TYPE_RAID;
4744 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4745 sdev->scsi_level = 4;
4746 sdev->no_uld_attach = 1;
4747 }
4748 if (ipr_is_vset_device(res)) {
4749 blk_queue_rq_timeout(sdev->request_queue,
4750 IPR_VSET_RW_TIMEOUT);
4751 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4752 }
4753 if (ipr_is_gata(res) && res->sata_port)
4754 ap = res->sata_port->ap;
4755 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4756
4757 if (ap) {
4758 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4759 ata_sas_slave_configure(sdev, ap);
4760 } else
4761 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4762 if (ioa_cfg->sis64)
4763 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4764 ipr_format_res_path(ioa_cfg,
4765 res->res_path, buffer, sizeof(buffer)));
4766 return 0;
4767 }
4768 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4769 return 0;
4770 }
4771
4772 /**
4773 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4774 * @sdev: scsi device struct
4775 *
4776 * This function initializes an ATA port so that future commands
4777 * sent through queuecommand will work.
4778 *
4779 * Return value:
4780 * 0 on success
4781 **/
4782 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4783 {
4784 struct ipr_sata_port *sata_port = NULL;
4785 int rc = -ENXIO;
4786
4787 ENTER;
4788 if (sdev->sdev_target)
4789 sata_port = sdev->sdev_target->hostdata;
4790 if (sata_port) {
4791 rc = ata_sas_port_init(sata_port->ap);
4792 if (rc == 0)
4793 rc = ata_sas_sync_probe(sata_port->ap);
4794 }
4795
4796 if (rc)
4797 ipr_slave_destroy(sdev);
4798
4799 LEAVE;
4800 return rc;
4801 }
4802
4803 /**
4804 * ipr_slave_alloc - Prepare for commands to a device.
4805 * @sdev: scsi device struct
4806 *
4807 * This function saves a pointer to the resource entry
4808 * in the scsi device struct if the device exists. We
4809 * can then use this pointer in ipr_queuecommand when
4810 * handling new commands.
4811 *
4812 * Return value:
4813 * 0 on success / -ENXIO if device does not exist
4814 **/
4815 static int ipr_slave_alloc(struct scsi_device *sdev)
4816 {
4817 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4818 struct ipr_resource_entry *res;
4819 unsigned long lock_flags;
4820 int rc = -ENXIO;
4821
4822 sdev->hostdata = NULL;
4823
4824 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4825
4826 res = ipr_find_sdev(sdev);
4827 if (res) {
4828 res->sdev = sdev;
4829 res->add_to_ml = 0;
4830 res->in_erp = 0;
4831 sdev->hostdata = res;
4832 if (!ipr_is_naca_model(res))
4833 res->needs_sync_complete = 1;
4834 rc = 0;
4835 if (ipr_is_gata(res)) {
4836 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4837 return ipr_ata_slave_alloc(sdev);
4838 }
4839 }
4840
4841 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4842
4843 return rc;
4844 }
4845
4846 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4847 {
4848 struct ipr_ioa_cfg *ioa_cfg;
4849 unsigned long lock_flags = 0;
4850 int rc = SUCCESS;
4851
4852 ENTER;
4853 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4854 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4855
4856 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4857 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4858 dev_err(&ioa_cfg->pdev->dev,
4859 "Adapter being reset as a result of error recovery.\n");
4860
4861 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4862 ioa_cfg->sdt_state = GET_DUMP;
4863 }
4864
4865 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4866 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4867 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4868
4869 /* If we got hit with a host reset while we were already resetting
4870 the adapter for some reason, and the reset failed. */
4871 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4872 ipr_trace;
4873 rc = FAILED;
4874 }
4875
4876 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4877 LEAVE;
4878 return rc;
4879 }
4880
4881 /**
4882 * ipr_device_reset - Reset the device
4883 * @ioa_cfg: ioa config struct
4884 * @res: resource entry struct
4885 *
4886 * This function issues a device reset to the affected device.
4887 * If the device is a SCSI device, a LUN reset will be sent
4888 * to the device first. If that does not work, a target reset
4889 * will be sent. If the device is a SATA device, a PHY reset will
4890 * be sent.
4891 *
4892 * Return value:
4893 * 0 on success / non-zero on failure
4894 **/
4895 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4896 struct ipr_resource_entry *res)
4897 {
4898 struct ipr_cmnd *ipr_cmd;
4899 struct ipr_ioarcb *ioarcb;
4900 struct ipr_cmd_pkt *cmd_pkt;
4901 struct ipr_ioarcb_ata_regs *regs;
4902 u32 ioasc;
4903
4904 ENTER;
4905 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4906 ioarcb = &ipr_cmd->ioarcb;
4907 cmd_pkt = &ioarcb->cmd_pkt;
4908
4909 if (ipr_cmd->ioa_cfg->sis64) {
4910 regs = &ipr_cmd->i.ata_ioadl.regs;
4911 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4912 } else
4913 regs = &ioarcb->u.add_data.u.regs;
4914
4915 ioarcb->res_handle = res->res_handle;
4916 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4917 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4918 if (ipr_is_gata(res)) {
4919 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4920 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4921 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4922 }
4923
4924 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4925 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4926 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
4927 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4928 if (ipr_cmd->ioa_cfg->sis64)
4929 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4930 sizeof(struct ipr_ioasa_gata));
4931 else
4932 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4933 sizeof(struct ipr_ioasa_gata));
4934 }
4935
4936 LEAVE;
4937 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
4938 }
4939
4940 /**
4941 * ipr_sata_reset - Reset the SATA port
4942 * @link: SATA link to reset
4943 * @classes: class of the attached device
4944 *
4945 * This function issues a SATA phy reset to the affected ATA link.
4946 *
4947 * Return value:
4948 * 0 on success / non-zero on failure
4949 **/
4950 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4951 unsigned long deadline)
4952 {
4953 struct ipr_sata_port *sata_port = link->ap->private_data;
4954 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4955 struct ipr_resource_entry *res;
4956 unsigned long lock_flags = 0;
4957 int rc = -ENXIO;
4958
4959 ENTER;
4960 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4961 while (ioa_cfg->in_reset_reload) {
4962 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4963 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4964 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4965 }
4966
4967 res = sata_port->res;
4968 if (res) {
4969 rc = ipr_device_reset(ioa_cfg, res);
4970 *classes = res->ata_class;
4971 }
4972
4973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4974 LEAVE;
4975 return rc;
4976 }
4977
4978 /**
4979 * ipr_eh_dev_reset - Reset the device
4980 * @scsi_cmd: scsi command struct
4981 *
4982 * This function issues a device reset to the affected device.
4983 * A LUN reset will be sent to the device first. If that does
4984 * not work, a target reset will be sent.
4985 *
4986 * Return value:
4987 * SUCCESS / FAILED
4988 **/
4989 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
4990 {
4991 struct ipr_cmnd *ipr_cmd;
4992 struct ipr_ioa_cfg *ioa_cfg;
4993 struct ipr_resource_entry *res;
4994 struct ata_port *ap;
4995 int rc = 0;
4996 struct ipr_hrr_queue *hrrq;
4997
4998 ENTER;
4999 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5000 res = scsi_cmd->device->hostdata;
5001
5002 if (!res)
5003 return FAILED;
5004
5005 /*
5006 * If we are currently going through reset/reload, return failed. This will force the
5007 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5008 * reset to complete
5009 */
5010 if (ioa_cfg->in_reset_reload)
5011 return FAILED;
5012 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5013 return FAILED;
5014
5015 for_each_hrrq(hrrq, ioa_cfg) {
5016 spin_lock(&hrrq->_lock);
5017 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5018 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5019 if (ipr_cmd->scsi_cmd)
5020 ipr_cmd->done = ipr_scsi_eh_done;
5021 if (ipr_cmd->qc)
5022 ipr_cmd->done = ipr_sata_eh_done;
5023 if (ipr_cmd->qc &&
5024 !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5025 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5026 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5027 }
5028 }
5029 }
5030 spin_unlock(&hrrq->_lock);
5031 }
5032 res->resetting_device = 1;
5033 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5034
5035 if (ipr_is_gata(res) && res->sata_port) {
5036 ap = res->sata_port->ap;
5037 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5038 ata_std_error_handler(ap);
5039 spin_lock_irq(scsi_cmd->device->host->host_lock);
5040
5041 for_each_hrrq(hrrq, ioa_cfg) {
5042 spin_lock(&hrrq->_lock);
5043 list_for_each_entry(ipr_cmd,
5044 &hrrq->hrrq_pending_q, queue) {
5045 if (ipr_cmd->ioarcb.res_handle ==
5046 res->res_handle) {
5047 rc = -EIO;
5048 break;
5049 }
5050 }
5051 spin_unlock(&hrrq->_lock);
5052 }
5053 } else
5054 rc = ipr_device_reset(ioa_cfg, res);
5055 res->resetting_device = 0;
5056 res->reset_occurred = 1;
5057
5058 LEAVE;
5059 return rc ? FAILED : SUCCESS;
5060 }
5061
5062 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5063 {
5064 int rc;
5065
5066 spin_lock_irq(cmd->device->host->host_lock);
5067 rc = __ipr_eh_dev_reset(cmd);
5068 spin_unlock_irq(cmd->device->host->host_lock);
5069
5070 return rc;
5071 }
5072
5073 /**
5074 * ipr_bus_reset_done - Op done function for bus reset.
5075 * @ipr_cmd: ipr command struct
5076 *
5077 * This function is the op done function for a bus reset
5078 *
5079 * Return value:
5080 * none
5081 **/
5082 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5083 {
5084 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5085 struct ipr_resource_entry *res;
5086
5087 ENTER;
5088 if (!ioa_cfg->sis64)
5089 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5090 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5091 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5092 break;
5093 }
5094 }
5095
5096 /*
5097 * If abort has not completed, indicate the reset has, else call the
5098 * abort's done function to wake the sleeping eh thread
5099 */
5100 if (ipr_cmd->sibling->sibling)
5101 ipr_cmd->sibling->sibling = NULL;
5102 else
5103 ipr_cmd->sibling->done(ipr_cmd->sibling);
5104
5105 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5106 LEAVE;
5107 }
5108
5109 /**
5110 * ipr_abort_timeout - An abort task has timed out
5111 * @ipr_cmd: ipr command struct
5112 *
5113 * This function handles when an abort task times out. If this
5114 * happens we issue a bus reset since we have resources tied
5115 * up that must be freed before returning to the midlayer.
5116 *
5117 * Return value:
5118 * none
5119 **/
5120 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5121 {
5122 struct ipr_cmnd *reset_cmd;
5123 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5124 struct ipr_cmd_pkt *cmd_pkt;
5125 unsigned long lock_flags = 0;
5126
5127 ENTER;
5128 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5129 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5130 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5131 return;
5132 }
5133
5134 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5135 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5136 ipr_cmd->sibling = reset_cmd;
5137 reset_cmd->sibling = ipr_cmd;
5138 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5139 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5140 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5141 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5142 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5143
5144 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5145 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5146 LEAVE;
5147 }
5148
5149 /**
5150 * ipr_cancel_op - Cancel specified op
5151 * @scsi_cmd: scsi command struct
5152 *
5153 * This function cancels specified op.
5154 *
5155 * Return value:
5156 * SUCCESS / FAILED
5157 **/
5158 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5159 {
5160 struct ipr_cmnd *ipr_cmd;
5161 struct ipr_ioa_cfg *ioa_cfg;
5162 struct ipr_resource_entry *res;
5163 struct ipr_cmd_pkt *cmd_pkt;
5164 u32 ioasc, int_reg;
5165 int op_found = 0;
5166 struct ipr_hrr_queue *hrrq;
5167
5168 ENTER;
5169 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5170 res = scsi_cmd->device->hostdata;
5171
5172 /* If we are currently going through reset/reload, return failed.
5173 * This will force the mid-layer to call ipr_eh_host_reset,
5174 * which will then go to sleep and wait for the reset to complete
5175 */
5176 if (ioa_cfg->in_reset_reload ||
5177 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5178 return FAILED;
5179 if (!res)
5180 return FAILED;
5181
5182 /*
5183 * If we are aborting a timed out op, chances are that the timeout was caused
5184 * by a still not detected EEH error. In such cases, reading a register will
5185 * trigger the EEH recovery infrastructure.
5186 */
5187 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5188
5189 if (!ipr_is_gscsi(res))
5190 return FAILED;
5191
5192 for_each_hrrq(hrrq, ioa_cfg) {
5193 spin_lock(&hrrq->_lock);
5194 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5195 if (ipr_cmd->scsi_cmd == scsi_cmd) {
5196 ipr_cmd->done = ipr_scsi_eh_done;
5197 op_found = 1;
5198 break;
5199 }
5200 }
5201 spin_unlock(&hrrq->_lock);
5202 }
5203
5204 if (!op_found)
5205 return SUCCESS;
5206
5207 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5208 ipr_cmd->ioarcb.res_handle = res->res_handle;
5209 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5210 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5211 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5212 ipr_cmd->u.sdev = scsi_cmd->device;
5213
5214 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5215 scsi_cmd->cmnd[0]);
5216 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5217 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5218
5219 /*
5220 * If the abort task timed out and we sent a bus reset, we will get
5221 * one the following responses to the abort
5222 */
5223 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5224 ioasc = 0;
5225 ipr_trace;
5226 }
5227
5228 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5229 if (!ipr_is_naca_model(res))
5230 res->needs_sync_complete = 1;
5231
5232 LEAVE;
5233 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5234 }
5235
5236 /**
5237 * ipr_eh_abort - Abort a single op
5238 * @scsi_cmd: scsi command struct
5239 *
5240 * Return value:
5241 * SUCCESS / FAILED
5242 **/
5243 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5244 {
5245 unsigned long flags;
5246 int rc;
5247
5248 ENTER;
5249
5250 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5251 rc = ipr_cancel_op(scsi_cmd);
5252 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5253
5254 LEAVE;
5255 return rc;
5256 }
5257
5258 /**
5259 * ipr_handle_other_interrupt - Handle "other" interrupts
5260 * @ioa_cfg: ioa config struct
5261 * @int_reg: interrupt register
5262 *
5263 * Return value:
5264 * IRQ_NONE / IRQ_HANDLED
5265 **/
5266 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5267 u32 int_reg)
5268 {
5269 irqreturn_t rc = IRQ_HANDLED;
5270 u32 int_mask_reg;
5271
5272 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5273 int_reg &= ~int_mask_reg;
5274
5275 /* If an interrupt on the adapter did not occur, ignore it.
5276 * Or in the case of SIS 64, check for a stage change interrupt.
5277 */
5278 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5279 if (ioa_cfg->sis64) {
5280 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5281 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5282 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5283
5284 /* clear stage change */
5285 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5286 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5287 list_del(&ioa_cfg->reset_cmd->queue);
5288 del_timer(&ioa_cfg->reset_cmd->timer);
5289 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5290 return IRQ_HANDLED;
5291 }
5292 }
5293
5294 return IRQ_NONE;
5295 }
5296
5297 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5298 /* Mask the interrupt */
5299 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5300
5301 /* Clear the interrupt */
5302 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
5303 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5304
5305 list_del(&ioa_cfg->reset_cmd->queue);
5306 del_timer(&ioa_cfg->reset_cmd->timer);
5307 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5308 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5309 if (ioa_cfg->clear_isr) {
5310 if (ipr_debug && printk_ratelimit())
5311 dev_err(&ioa_cfg->pdev->dev,
5312 "Spurious interrupt detected. 0x%08X\n", int_reg);
5313 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5314 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5315 return IRQ_NONE;
5316 }
5317 } else {
5318 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5319 ioa_cfg->ioa_unit_checked = 1;
5320 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5321 dev_err(&ioa_cfg->pdev->dev,
5322 "No Host RRQ. 0x%08X\n", int_reg);
5323 else
5324 dev_err(&ioa_cfg->pdev->dev,
5325 "Permanent IOA failure. 0x%08X\n", int_reg);
5326
5327 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5328 ioa_cfg->sdt_state = GET_DUMP;
5329
5330 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5331 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5332 }
5333
5334 return rc;
5335 }
5336
5337 /**
5338 * ipr_isr_eh - Interrupt service routine error handler
5339 * @ioa_cfg: ioa config struct
5340 * @msg: message to log
5341 *
5342 * Return value:
5343 * none
5344 **/
5345 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5346 {
5347 ioa_cfg->errors_logged++;
5348 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5349
5350 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5351 ioa_cfg->sdt_state = GET_DUMP;
5352
5353 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5354 }
5355
5356 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5357 struct list_head *doneq)
5358 {
5359 u32 ioasc;
5360 u16 cmd_index;
5361 struct ipr_cmnd *ipr_cmd;
5362 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5363 int num_hrrq = 0;
5364
5365 /* If interrupts are disabled, ignore the interrupt */
5366 if (!hrr_queue->allow_interrupts)
5367 return 0;
5368
5369 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5370 hrr_queue->toggle_bit) {
5371
5372 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5373 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5374 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5375
5376 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5377 cmd_index < hrr_queue->min_cmd_id)) {
5378 ipr_isr_eh(ioa_cfg,
5379 "Invalid response handle from IOA: ",
5380 cmd_index);
5381 break;
5382 }
5383
5384 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5385 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5386
5387 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5388
5389 list_move_tail(&ipr_cmd->queue, doneq);
5390
5391 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5392 hrr_queue->hrrq_curr++;
5393 } else {
5394 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5395 hrr_queue->toggle_bit ^= 1u;
5396 }
5397 num_hrrq++;
5398 if (budget > 0 && num_hrrq >= budget)
5399 break;
5400 }
5401
5402 return num_hrrq;
5403 }
5404
5405 static int ipr_iopoll(struct blk_iopoll *iop, int budget)
5406 {
5407 struct ipr_ioa_cfg *ioa_cfg;
5408 struct ipr_hrr_queue *hrrq;
5409 struct ipr_cmnd *ipr_cmd, *temp;
5410 unsigned long hrrq_flags;
5411 int completed_ops;
5412 LIST_HEAD(doneq);
5413
5414 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5415 ioa_cfg = hrrq->ioa_cfg;
5416
5417 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5418 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5419
5420 if (completed_ops < budget)
5421 blk_iopoll_complete(iop);
5422 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5423
5424 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5425 list_del(&ipr_cmd->queue);
5426 del_timer(&ipr_cmd->timer);
5427 ipr_cmd->fast_done(ipr_cmd);
5428 }
5429
5430 return completed_ops;
5431 }
5432
5433 /**
5434 * ipr_isr - Interrupt service routine
5435 * @irq: irq number
5436 * @devp: pointer to ioa config struct
5437 *
5438 * Return value:
5439 * IRQ_NONE / IRQ_HANDLED
5440 **/
5441 static irqreturn_t ipr_isr(int irq, void *devp)
5442 {
5443 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5444 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5445 unsigned long hrrq_flags = 0;
5446 u32 int_reg = 0;
5447 int num_hrrq = 0;
5448 int irq_none = 0;
5449 struct ipr_cmnd *ipr_cmd, *temp;
5450 irqreturn_t rc = IRQ_NONE;
5451 LIST_HEAD(doneq);
5452
5453 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5454 /* If interrupts are disabled, ignore the interrupt */
5455 if (!hrrq->allow_interrupts) {
5456 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5457 return IRQ_NONE;
5458 }
5459
5460 while (1) {
5461 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5462 rc = IRQ_HANDLED;
5463
5464 if (!ioa_cfg->clear_isr)
5465 break;
5466
5467 /* Clear the PCI interrupt */
5468 num_hrrq = 0;
5469 do {
5470 writel(IPR_PCII_HRRQ_UPDATED,
5471 ioa_cfg->regs.clr_interrupt_reg32);
5472 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5473 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5474 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5475
5476 } else if (rc == IRQ_NONE && irq_none == 0) {
5477 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5478 irq_none++;
5479 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5480 int_reg & IPR_PCII_HRRQ_UPDATED) {
5481 ipr_isr_eh(ioa_cfg,
5482 "Error clearing HRRQ: ", num_hrrq);
5483 rc = IRQ_HANDLED;
5484 break;
5485 } else
5486 break;
5487 }
5488
5489 if (unlikely(rc == IRQ_NONE))
5490 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5491
5492 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5493 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5494 list_del(&ipr_cmd->queue);
5495 del_timer(&ipr_cmd->timer);
5496 ipr_cmd->fast_done(ipr_cmd);
5497 }
5498 return rc;
5499 }
5500
5501 /**
5502 * ipr_isr_mhrrq - Interrupt service routine
5503 * @irq: irq number
5504 * @devp: pointer to ioa config struct
5505 *
5506 * Return value:
5507 * IRQ_NONE / IRQ_HANDLED
5508 **/
5509 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5510 {
5511 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5512 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5513 unsigned long hrrq_flags = 0;
5514 struct ipr_cmnd *ipr_cmd, *temp;
5515 irqreturn_t rc = IRQ_NONE;
5516 LIST_HEAD(doneq);
5517
5518 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5519
5520 /* If interrupts are disabled, ignore the interrupt */
5521 if (!hrrq->allow_interrupts) {
5522 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5523 return IRQ_NONE;
5524 }
5525
5526 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5527 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5528 hrrq->toggle_bit) {
5529 if (!blk_iopoll_sched_prep(&hrrq->iopoll))
5530 blk_iopoll_sched(&hrrq->iopoll);
5531 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5532 return IRQ_HANDLED;
5533 }
5534 } else {
5535 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5536 hrrq->toggle_bit)
5537
5538 if (ipr_process_hrrq(hrrq, -1, &doneq))
5539 rc = IRQ_HANDLED;
5540 }
5541
5542 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5543
5544 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5545 list_del(&ipr_cmd->queue);
5546 del_timer(&ipr_cmd->timer);
5547 ipr_cmd->fast_done(ipr_cmd);
5548 }
5549 return rc;
5550 }
5551
5552 /**
5553 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5554 * @ioa_cfg: ioa config struct
5555 * @ipr_cmd: ipr command struct
5556 *
5557 * Return value:
5558 * 0 on success / -1 on failure
5559 **/
5560 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5561 struct ipr_cmnd *ipr_cmd)
5562 {
5563 int i, nseg;
5564 struct scatterlist *sg;
5565 u32 length;
5566 u32 ioadl_flags = 0;
5567 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5568 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5569 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5570
5571 length = scsi_bufflen(scsi_cmd);
5572 if (!length)
5573 return 0;
5574
5575 nseg = scsi_dma_map(scsi_cmd);
5576 if (nseg < 0) {
5577 if (printk_ratelimit())
5578 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5579 return -1;
5580 }
5581
5582 ipr_cmd->dma_use_sg = nseg;
5583
5584 ioarcb->data_transfer_length = cpu_to_be32(length);
5585 ioarcb->ioadl_len =
5586 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5587
5588 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5589 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5590 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5591 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5592 ioadl_flags = IPR_IOADL_FLAGS_READ;
5593
5594 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5595 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5596 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5597 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5598 }
5599
5600 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5601 return 0;
5602 }
5603
5604 /**
5605 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5606 * @ioa_cfg: ioa config struct
5607 * @ipr_cmd: ipr command struct
5608 *
5609 * Return value:
5610 * 0 on success / -1 on failure
5611 **/
5612 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5613 struct ipr_cmnd *ipr_cmd)
5614 {
5615 int i, nseg;
5616 struct scatterlist *sg;
5617 u32 length;
5618 u32 ioadl_flags = 0;
5619 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5620 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5621 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5622
5623 length = scsi_bufflen(scsi_cmd);
5624 if (!length)
5625 return 0;
5626
5627 nseg = scsi_dma_map(scsi_cmd);
5628 if (nseg < 0) {
5629 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5630 return -1;
5631 }
5632
5633 ipr_cmd->dma_use_sg = nseg;
5634
5635 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5636 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5637 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5638 ioarcb->data_transfer_length = cpu_to_be32(length);
5639 ioarcb->ioadl_len =
5640 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5641 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5642 ioadl_flags = IPR_IOADL_FLAGS_READ;
5643 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5644 ioarcb->read_ioadl_len =
5645 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5646 }
5647
5648 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5649 ioadl = ioarcb->u.add_data.u.ioadl;
5650 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5651 offsetof(struct ipr_ioarcb, u.add_data));
5652 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5653 }
5654
5655 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5656 ioadl[i].flags_and_data_len =
5657 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5658 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5659 }
5660
5661 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5662 return 0;
5663 }
5664
5665 /**
5666 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5667 * @scsi_cmd: scsi command struct
5668 *
5669 * Return value:
5670 * task attributes
5671 **/
5672 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5673 {
5674 u8 tag[2];
5675 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5676
5677 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5678 switch (tag[0]) {
5679 case MSG_SIMPLE_TAG:
5680 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5681 break;
5682 case MSG_HEAD_TAG:
5683 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5684 break;
5685 case MSG_ORDERED_TAG:
5686 rc = IPR_FLAGS_LO_ORDERED_TASK;
5687 break;
5688 };
5689 }
5690
5691 return rc;
5692 }
5693
5694 /**
5695 * ipr_erp_done - Process completion of ERP for a device
5696 * @ipr_cmd: ipr command struct
5697 *
5698 * This function copies the sense buffer into the scsi_cmd
5699 * struct and pushes the scsi_done function.
5700 *
5701 * Return value:
5702 * nothing
5703 **/
5704 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5705 {
5706 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5707 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5708 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5709
5710 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5711 scsi_cmd->result |= (DID_ERROR << 16);
5712 scmd_printk(KERN_ERR, scsi_cmd,
5713 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5714 } else {
5715 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5716 SCSI_SENSE_BUFFERSIZE);
5717 }
5718
5719 if (res) {
5720 if (!ipr_is_naca_model(res))
5721 res->needs_sync_complete = 1;
5722 res->in_erp = 0;
5723 }
5724 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5725 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5726 scsi_cmd->scsi_done(scsi_cmd);
5727 }
5728
5729 /**
5730 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5731 * @ipr_cmd: ipr command struct
5732 *
5733 * Return value:
5734 * none
5735 **/
5736 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5737 {
5738 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5739 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5740 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5741
5742 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5743 ioarcb->data_transfer_length = 0;
5744 ioarcb->read_data_transfer_length = 0;
5745 ioarcb->ioadl_len = 0;
5746 ioarcb->read_ioadl_len = 0;
5747 ioasa->hdr.ioasc = 0;
5748 ioasa->hdr.residual_data_len = 0;
5749
5750 if (ipr_cmd->ioa_cfg->sis64)
5751 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5752 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5753 else {
5754 ioarcb->write_ioadl_addr =
5755 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5756 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5757 }
5758 }
5759
5760 /**
5761 * ipr_erp_request_sense - Send request sense to a device
5762 * @ipr_cmd: ipr command struct
5763 *
5764 * This function sends a request sense to a device as a result
5765 * of a check condition.
5766 *
5767 * Return value:
5768 * nothing
5769 **/
5770 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5771 {
5772 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5773 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5774
5775 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5776 ipr_erp_done(ipr_cmd);
5777 return;
5778 }
5779
5780 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5781
5782 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5783 cmd_pkt->cdb[0] = REQUEST_SENSE;
5784 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5785 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5786 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5787 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5788
5789 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5790 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5791
5792 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5793 IPR_REQUEST_SENSE_TIMEOUT * 2);
5794 }
5795
5796 /**
5797 * ipr_erp_cancel_all - Send cancel all to a device
5798 * @ipr_cmd: ipr command struct
5799 *
5800 * This function sends a cancel all to a device to clear the
5801 * queue. If we are running TCQ on the device, QERR is set to 1,
5802 * which means all outstanding ops have been dropped on the floor.
5803 * Cancel all will return them to us.
5804 *
5805 * Return value:
5806 * nothing
5807 **/
5808 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5809 {
5810 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5811 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5812 struct ipr_cmd_pkt *cmd_pkt;
5813
5814 res->in_erp = 1;
5815
5816 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5817
5818 if (!scsi_get_tag_type(scsi_cmd->device)) {
5819 ipr_erp_request_sense(ipr_cmd);
5820 return;
5821 }
5822
5823 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5824 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5825 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5826
5827 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5828 IPR_CANCEL_ALL_TIMEOUT);
5829 }
5830
5831 /**
5832 * ipr_dump_ioasa - Dump contents of IOASA
5833 * @ioa_cfg: ioa config struct
5834 * @ipr_cmd: ipr command struct
5835 * @res: resource entry struct
5836 *
5837 * This function is invoked by the interrupt handler when ops
5838 * fail. It will log the IOASA if appropriate. Only called
5839 * for GPDD ops.
5840 *
5841 * Return value:
5842 * none
5843 **/
5844 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5845 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5846 {
5847 int i;
5848 u16 data_len;
5849 u32 ioasc, fd_ioasc;
5850 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5851 __be32 *ioasa_data = (__be32 *)ioasa;
5852 int error_index;
5853
5854 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5855 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5856
5857 if (0 == ioasc)
5858 return;
5859
5860 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5861 return;
5862
5863 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5864 error_index = ipr_get_error(fd_ioasc);
5865 else
5866 error_index = ipr_get_error(ioasc);
5867
5868 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5869 /* Don't log an error if the IOA already logged one */
5870 if (ioasa->hdr.ilid != 0)
5871 return;
5872
5873 if (!ipr_is_gscsi(res))
5874 return;
5875
5876 if (ipr_error_table[error_index].log_ioasa == 0)
5877 return;
5878 }
5879
5880 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5881
5882 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5883 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5884 data_len = sizeof(struct ipr_ioasa64);
5885 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5886 data_len = sizeof(struct ipr_ioasa);
5887
5888 ipr_err("IOASA Dump:\n");
5889
5890 for (i = 0; i < data_len / 4; i += 4) {
5891 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5892 be32_to_cpu(ioasa_data[i]),
5893 be32_to_cpu(ioasa_data[i+1]),
5894 be32_to_cpu(ioasa_data[i+2]),
5895 be32_to_cpu(ioasa_data[i+3]));
5896 }
5897 }
5898
5899 /**
5900 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5901 * @ioasa: IOASA
5902 * @sense_buf: sense data buffer
5903 *
5904 * Return value:
5905 * none
5906 **/
5907 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5908 {
5909 u32 failing_lba;
5910 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5911 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5912 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5913 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5914
5915 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5916
5917 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5918 return;
5919
5920 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5921
5922 if (ipr_is_vset_device(res) &&
5923 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5924 ioasa->u.vset.failing_lba_hi != 0) {
5925 sense_buf[0] = 0x72;
5926 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5927 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5928 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5929
5930 sense_buf[7] = 12;
5931 sense_buf[8] = 0;
5932 sense_buf[9] = 0x0A;
5933 sense_buf[10] = 0x80;
5934
5935 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5936
5937 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5938 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5939 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5940 sense_buf[15] = failing_lba & 0x000000ff;
5941
5942 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5943
5944 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5945 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5946 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5947 sense_buf[19] = failing_lba & 0x000000ff;
5948 } else {
5949 sense_buf[0] = 0x70;
5950 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5951 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5952 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5953
5954 /* Illegal request */
5955 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5956 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5957 sense_buf[7] = 10; /* additional length */
5958
5959 /* IOARCB was in error */
5960 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5961 sense_buf[15] = 0xC0;
5962 else /* Parameter data was invalid */
5963 sense_buf[15] = 0x80;
5964
5965 sense_buf[16] =
5966 ((IPR_FIELD_POINTER_MASK &
5967 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
5968 sense_buf[17] =
5969 (IPR_FIELD_POINTER_MASK &
5970 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
5971 } else {
5972 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5973 if (ipr_is_vset_device(res))
5974 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5975 else
5976 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5977
5978 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5979 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5980 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5981 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5982 sense_buf[6] = failing_lba & 0x000000ff;
5983 }
5984
5985 sense_buf[7] = 6; /* additional length */
5986 }
5987 }
5988 }
5989
5990 /**
5991 * ipr_get_autosense - Copy autosense data to sense buffer
5992 * @ipr_cmd: ipr command struct
5993 *
5994 * This function copies the autosense buffer to the buffer
5995 * in the scsi_cmd, if there is autosense available.
5996 *
5997 * Return value:
5998 * 1 if autosense was available / 0 if not
5999 **/
6000 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6001 {
6002 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6003 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6004
6005 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6006 return 0;
6007
6008 if (ipr_cmd->ioa_cfg->sis64)
6009 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6010 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6011 SCSI_SENSE_BUFFERSIZE));
6012 else
6013 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6014 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6015 SCSI_SENSE_BUFFERSIZE));
6016 return 1;
6017 }
6018
6019 /**
6020 * ipr_erp_start - Process an error response for a SCSI op
6021 * @ioa_cfg: ioa config struct
6022 * @ipr_cmd: ipr command struct
6023 *
6024 * This function determines whether or not to initiate ERP
6025 * on the affected device.
6026 *
6027 * Return value:
6028 * nothing
6029 **/
6030 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6031 struct ipr_cmnd *ipr_cmd)
6032 {
6033 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6034 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6035 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6036 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6037
6038 if (!res) {
6039 ipr_scsi_eh_done(ipr_cmd);
6040 return;
6041 }
6042
6043 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6044 ipr_gen_sense(ipr_cmd);
6045
6046 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6047
6048 switch (masked_ioasc) {
6049 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6050 if (ipr_is_naca_model(res))
6051 scsi_cmd->result |= (DID_ABORT << 16);
6052 else
6053 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6054 break;
6055 case IPR_IOASC_IR_RESOURCE_HANDLE:
6056 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6057 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6058 break;
6059 case IPR_IOASC_HW_SEL_TIMEOUT:
6060 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6061 if (!ipr_is_naca_model(res))
6062 res->needs_sync_complete = 1;
6063 break;
6064 case IPR_IOASC_SYNC_REQUIRED:
6065 if (!res->in_erp)
6066 res->needs_sync_complete = 1;
6067 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6068 break;
6069 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6070 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6071 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6072 break;
6073 case IPR_IOASC_BUS_WAS_RESET:
6074 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6075 /*
6076 * Report the bus reset and ask for a retry. The device
6077 * will give CC/UA the next command.
6078 */
6079 if (!res->resetting_device)
6080 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6081 scsi_cmd->result |= (DID_ERROR << 16);
6082 if (!ipr_is_naca_model(res))
6083 res->needs_sync_complete = 1;
6084 break;
6085 case IPR_IOASC_HW_DEV_BUS_STATUS:
6086 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6087 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6088 if (!ipr_get_autosense(ipr_cmd)) {
6089 if (!ipr_is_naca_model(res)) {
6090 ipr_erp_cancel_all(ipr_cmd);
6091 return;
6092 }
6093 }
6094 }
6095 if (!ipr_is_naca_model(res))
6096 res->needs_sync_complete = 1;
6097 break;
6098 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6099 break;
6100 default:
6101 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6102 scsi_cmd->result |= (DID_ERROR << 16);
6103 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6104 res->needs_sync_complete = 1;
6105 break;
6106 }
6107
6108 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6109 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6110 scsi_cmd->scsi_done(scsi_cmd);
6111 }
6112
6113 /**
6114 * ipr_scsi_done - mid-layer done function
6115 * @ipr_cmd: ipr command struct
6116 *
6117 * This function is invoked by the interrupt handler for
6118 * ops generated by the SCSI mid-layer
6119 *
6120 * Return value:
6121 * none
6122 **/
6123 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6124 {
6125 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6126 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6127 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6128 unsigned long hrrq_flags;
6129
6130 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6131
6132 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6133 scsi_dma_unmap(scsi_cmd);
6134
6135 spin_lock_irqsave(ipr_cmd->hrrq->lock, hrrq_flags);
6136 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6137 scsi_cmd->scsi_done(scsi_cmd);
6138 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, hrrq_flags);
6139 } else {
6140 spin_lock_irqsave(ipr_cmd->hrrq->lock, hrrq_flags);
6141 ipr_erp_start(ioa_cfg, ipr_cmd);
6142 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, hrrq_flags);
6143 }
6144 }
6145
6146 /**
6147 * ipr_queuecommand - Queue a mid-layer request
6148 * @shost: scsi host struct
6149 * @scsi_cmd: scsi command struct
6150 *
6151 * This function queues a request generated by the mid-layer.
6152 *
6153 * Return value:
6154 * 0 on success
6155 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6156 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6157 **/
6158 static int ipr_queuecommand(struct Scsi_Host *shost,
6159 struct scsi_cmnd *scsi_cmd)
6160 {
6161 struct ipr_ioa_cfg *ioa_cfg;
6162 struct ipr_resource_entry *res;
6163 struct ipr_ioarcb *ioarcb;
6164 struct ipr_cmnd *ipr_cmd;
6165 unsigned long hrrq_flags, lock_flags;
6166 int rc;
6167 struct ipr_hrr_queue *hrrq;
6168 int hrrq_id;
6169
6170 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6171
6172 scsi_cmd->result = (DID_OK << 16);
6173 res = scsi_cmd->device->hostdata;
6174
6175 if (ipr_is_gata(res) && res->sata_port) {
6176 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6177 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6178 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6179 return rc;
6180 }
6181
6182 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6183 hrrq = &ioa_cfg->hrrq[hrrq_id];
6184
6185 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6186 /*
6187 * We are currently blocking all devices due to a host reset
6188 * We have told the host to stop giving us new requests, but
6189 * ERP ops don't count. FIXME
6190 */
6191 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6192 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6193 return SCSI_MLQUEUE_HOST_BUSY;
6194 }
6195
6196 /*
6197 * FIXME - Create scsi_set_host_offline interface
6198 * and the ioa_is_dead check can be removed
6199 */
6200 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6201 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6202 goto err_nodev;
6203 }
6204
6205 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6206 if (ipr_cmd == NULL) {
6207 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6208 return SCSI_MLQUEUE_HOST_BUSY;
6209 }
6210 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6211
6212 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6213 ioarcb = &ipr_cmd->ioarcb;
6214
6215 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6216 ipr_cmd->scsi_cmd = scsi_cmd;
6217 ipr_cmd->done = ipr_scsi_eh_done;
6218
6219 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6220 if (scsi_cmd->underflow == 0)
6221 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6222
6223 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6224 if (ipr_is_gscsi(res) && res->reset_occurred) {
6225 res->reset_occurred = 0;
6226 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6227 }
6228 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6229 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
6230 }
6231
6232 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6233 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6234 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6235 }
6236
6237 if (ioa_cfg->sis64)
6238 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6239 else
6240 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6241
6242 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6243 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6244 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6245 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6246 if (!rc)
6247 scsi_dma_unmap(scsi_cmd);
6248 return SCSI_MLQUEUE_HOST_BUSY;
6249 }
6250
6251 if (unlikely(hrrq->ioa_is_dead)) {
6252 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6253 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6254 scsi_dma_unmap(scsi_cmd);
6255 goto err_nodev;
6256 }
6257
6258 ioarcb->res_handle = res->res_handle;
6259 if (res->needs_sync_complete) {
6260 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6261 res->needs_sync_complete = 0;
6262 }
6263 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6264 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6265 ipr_send_command(ipr_cmd);
6266 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6267 return 0;
6268
6269 err_nodev:
6270 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6271 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6272 scsi_cmd->result = (DID_NO_CONNECT << 16);
6273 scsi_cmd->scsi_done(scsi_cmd);
6274 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6275 return 0;
6276 }
6277
6278 /**
6279 * ipr_ioctl - IOCTL handler
6280 * @sdev: scsi device struct
6281 * @cmd: IOCTL cmd
6282 * @arg: IOCTL arg
6283 *
6284 * Return value:
6285 * 0 on success / other on failure
6286 **/
6287 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6288 {
6289 struct ipr_resource_entry *res;
6290
6291 res = (struct ipr_resource_entry *)sdev->hostdata;
6292 if (res && ipr_is_gata(res)) {
6293 if (cmd == HDIO_GET_IDENTITY)
6294 return -ENOTTY;
6295 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6296 }
6297
6298 return -EINVAL;
6299 }
6300
6301 /**
6302 * ipr_info - Get information about the card/driver
6303 * @scsi_host: scsi host struct
6304 *
6305 * Return value:
6306 * pointer to buffer with description string
6307 **/
6308 static const char *ipr_ioa_info(struct Scsi_Host *host)
6309 {
6310 static char buffer[512];
6311 struct ipr_ioa_cfg *ioa_cfg;
6312 unsigned long lock_flags = 0;
6313
6314 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6315
6316 spin_lock_irqsave(host->host_lock, lock_flags);
6317 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6318 spin_unlock_irqrestore(host->host_lock, lock_flags);
6319
6320 return buffer;
6321 }
6322
6323 static struct scsi_host_template driver_template = {
6324 .module = THIS_MODULE,
6325 .name = "IPR",
6326 .info = ipr_ioa_info,
6327 .ioctl = ipr_ioctl,
6328 .queuecommand = ipr_queuecommand,
6329 .eh_abort_handler = ipr_eh_abort,
6330 .eh_device_reset_handler = ipr_eh_dev_reset,
6331 .eh_host_reset_handler = ipr_eh_host_reset,
6332 .slave_alloc = ipr_slave_alloc,
6333 .slave_configure = ipr_slave_configure,
6334 .slave_destroy = ipr_slave_destroy,
6335 .target_alloc = ipr_target_alloc,
6336 .target_destroy = ipr_target_destroy,
6337 .change_queue_depth = ipr_change_queue_depth,
6338 .change_queue_type = ipr_change_queue_type,
6339 .bios_param = ipr_biosparam,
6340 .can_queue = IPR_MAX_COMMANDS,
6341 .this_id = -1,
6342 .sg_tablesize = IPR_MAX_SGLIST,
6343 .max_sectors = IPR_IOA_MAX_SECTORS,
6344 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6345 .use_clustering = ENABLE_CLUSTERING,
6346 .shost_attrs = ipr_ioa_attrs,
6347 .sdev_attrs = ipr_dev_attrs,
6348 .proc_name = IPR_NAME,
6349 .no_write_same = 1,
6350 };
6351
6352 /**
6353 * ipr_ata_phy_reset - libata phy_reset handler
6354 * @ap: ata port to reset
6355 *
6356 **/
6357 static void ipr_ata_phy_reset(struct ata_port *ap)
6358 {
6359 unsigned long flags;
6360 struct ipr_sata_port *sata_port = ap->private_data;
6361 struct ipr_resource_entry *res = sata_port->res;
6362 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6363 int rc;
6364
6365 ENTER;
6366 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6367 while (ioa_cfg->in_reset_reload) {
6368 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6369 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6370 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6371 }
6372
6373 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6374 goto out_unlock;
6375
6376 rc = ipr_device_reset(ioa_cfg, res);
6377
6378 if (rc) {
6379 ap->link.device[0].class = ATA_DEV_NONE;
6380 goto out_unlock;
6381 }
6382
6383 ap->link.device[0].class = res->ata_class;
6384 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6385 ap->link.device[0].class = ATA_DEV_NONE;
6386
6387 out_unlock:
6388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6389 LEAVE;
6390 }
6391
6392 /**
6393 * ipr_ata_post_internal - Cleanup after an internal command
6394 * @qc: ATA queued command
6395 *
6396 * Return value:
6397 * none
6398 **/
6399 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6400 {
6401 struct ipr_sata_port *sata_port = qc->ap->private_data;
6402 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6403 struct ipr_cmnd *ipr_cmd;
6404 struct ipr_hrr_queue *hrrq;
6405 unsigned long flags;
6406
6407 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6408 while (ioa_cfg->in_reset_reload) {
6409 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6410 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6411 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6412 }
6413
6414 for_each_hrrq(hrrq, ioa_cfg) {
6415 spin_lock(&hrrq->_lock);
6416 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6417 if (ipr_cmd->qc == qc) {
6418 ipr_device_reset(ioa_cfg, sata_port->res);
6419 break;
6420 }
6421 }
6422 spin_unlock(&hrrq->_lock);
6423 }
6424 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6425 }
6426
6427 /**
6428 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6429 * @regs: destination
6430 * @tf: source ATA taskfile
6431 *
6432 * Return value:
6433 * none
6434 **/
6435 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6436 struct ata_taskfile *tf)
6437 {
6438 regs->feature = tf->feature;
6439 regs->nsect = tf->nsect;
6440 regs->lbal = tf->lbal;
6441 regs->lbam = tf->lbam;
6442 regs->lbah = tf->lbah;
6443 regs->device = tf->device;
6444 regs->command = tf->command;
6445 regs->hob_feature = tf->hob_feature;
6446 regs->hob_nsect = tf->hob_nsect;
6447 regs->hob_lbal = tf->hob_lbal;
6448 regs->hob_lbam = tf->hob_lbam;
6449 regs->hob_lbah = tf->hob_lbah;
6450 regs->ctl = tf->ctl;
6451 }
6452
6453 /**
6454 * ipr_sata_done - done function for SATA commands
6455 * @ipr_cmd: ipr command struct
6456 *
6457 * This function is invoked by the interrupt handler for
6458 * ops generated by the SCSI mid-layer to SATA devices
6459 *
6460 * Return value:
6461 * none
6462 **/
6463 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6464 {
6465 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6466 struct ata_queued_cmd *qc = ipr_cmd->qc;
6467 struct ipr_sata_port *sata_port = qc->ap->private_data;
6468 struct ipr_resource_entry *res = sata_port->res;
6469 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6470
6471 spin_lock(&ipr_cmd->hrrq->_lock);
6472 if (ipr_cmd->ioa_cfg->sis64)
6473 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6474 sizeof(struct ipr_ioasa_gata));
6475 else
6476 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6477 sizeof(struct ipr_ioasa_gata));
6478 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6479
6480 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6481 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6482
6483 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6484 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6485 else
6486 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6487 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6488 spin_unlock(&ipr_cmd->hrrq->_lock);
6489 ata_qc_complete(qc);
6490 }
6491
6492 /**
6493 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6494 * @ipr_cmd: ipr command struct
6495 * @qc: ATA queued command
6496 *
6497 **/
6498 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6499 struct ata_queued_cmd *qc)
6500 {
6501 u32 ioadl_flags = 0;
6502 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6503 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6504 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6505 int len = qc->nbytes;
6506 struct scatterlist *sg;
6507 unsigned int si;
6508 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6509
6510 if (len == 0)
6511 return;
6512
6513 if (qc->dma_dir == DMA_TO_DEVICE) {
6514 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6515 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6516 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6517 ioadl_flags = IPR_IOADL_FLAGS_READ;
6518
6519 ioarcb->data_transfer_length = cpu_to_be32(len);
6520 ioarcb->ioadl_len =
6521 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6522 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6523 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6524
6525 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6526 ioadl64->flags = cpu_to_be32(ioadl_flags);
6527 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6528 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6529
6530 last_ioadl64 = ioadl64;
6531 ioadl64++;
6532 }
6533
6534 if (likely(last_ioadl64))
6535 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6536 }
6537
6538 /**
6539 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6540 * @ipr_cmd: ipr command struct
6541 * @qc: ATA queued command
6542 *
6543 **/
6544 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6545 struct ata_queued_cmd *qc)
6546 {
6547 u32 ioadl_flags = 0;
6548 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6549 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6550 struct ipr_ioadl_desc *last_ioadl = NULL;
6551 int len = qc->nbytes;
6552 struct scatterlist *sg;
6553 unsigned int si;
6554
6555 if (len == 0)
6556 return;
6557
6558 if (qc->dma_dir == DMA_TO_DEVICE) {
6559 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6560 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6561 ioarcb->data_transfer_length = cpu_to_be32(len);
6562 ioarcb->ioadl_len =
6563 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6564 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6565 ioadl_flags = IPR_IOADL_FLAGS_READ;
6566 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6567 ioarcb->read_ioadl_len =
6568 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6569 }
6570
6571 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6572 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6573 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6574
6575 last_ioadl = ioadl;
6576 ioadl++;
6577 }
6578
6579 if (likely(last_ioadl))
6580 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6581 }
6582
6583 /**
6584 * ipr_qc_defer - Get a free ipr_cmd
6585 * @qc: queued command
6586 *
6587 * Return value:
6588 * 0 if success
6589 **/
6590 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6591 {
6592 struct ata_port *ap = qc->ap;
6593 struct ipr_sata_port *sata_port = ap->private_data;
6594 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6595 struct ipr_cmnd *ipr_cmd;
6596 struct ipr_hrr_queue *hrrq;
6597 int hrrq_id;
6598
6599 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6600 hrrq = &ioa_cfg->hrrq[hrrq_id];
6601
6602 qc->lldd_task = NULL;
6603 spin_lock(&hrrq->_lock);
6604 if (unlikely(hrrq->ioa_is_dead)) {
6605 spin_unlock(&hrrq->_lock);
6606 return 0;
6607 }
6608
6609 if (unlikely(!hrrq->allow_cmds)) {
6610 spin_unlock(&hrrq->_lock);
6611 return ATA_DEFER_LINK;
6612 }
6613
6614 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6615 if (ipr_cmd == NULL) {
6616 spin_unlock(&hrrq->_lock);
6617 return ATA_DEFER_LINK;
6618 }
6619
6620 qc->lldd_task = ipr_cmd;
6621 spin_unlock(&hrrq->_lock);
6622 return 0;
6623 }
6624
6625 /**
6626 * ipr_qc_issue - Issue a SATA qc to a device
6627 * @qc: queued command
6628 *
6629 * Return value:
6630 * 0 if success
6631 **/
6632 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6633 {
6634 struct ata_port *ap = qc->ap;
6635 struct ipr_sata_port *sata_port = ap->private_data;
6636 struct ipr_resource_entry *res = sata_port->res;
6637 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6638 struct ipr_cmnd *ipr_cmd;
6639 struct ipr_ioarcb *ioarcb;
6640 struct ipr_ioarcb_ata_regs *regs;
6641
6642 if (qc->lldd_task == NULL)
6643 ipr_qc_defer(qc);
6644
6645 ipr_cmd = qc->lldd_task;
6646 if (ipr_cmd == NULL)
6647 return AC_ERR_SYSTEM;
6648
6649 qc->lldd_task = NULL;
6650 spin_lock(&ipr_cmd->hrrq->_lock);
6651 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6652 ipr_cmd->hrrq->ioa_is_dead)) {
6653 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6654 spin_unlock(&ipr_cmd->hrrq->_lock);
6655 return AC_ERR_SYSTEM;
6656 }
6657
6658 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6659 ioarcb = &ipr_cmd->ioarcb;
6660
6661 if (ioa_cfg->sis64) {
6662 regs = &ipr_cmd->i.ata_ioadl.regs;
6663 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6664 } else
6665 regs = &ioarcb->u.add_data.u.regs;
6666
6667 memset(regs, 0, sizeof(*regs));
6668 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6669
6670 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6671 ipr_cmd->qc = qc;
6672 ipr_cmd->done = ipr_sata_done;
6673 ipr_cmd->ioarcb.res_handle = res->res_handle;
6674 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6675 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6676 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6677 ipr_cmd->dma_use_sg = qc->n_elem;
6678
6679 if (ioa_cfg->sis64)
6680 ipr_build_ata_ioadl64(ipr_cmd, qc);
6681 else
6682 ipr_build_ata_ioadl(ipr_cmd, qc);
6683
6684 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6685 ipr_copy_sata_tf(regs, &qc->tf);
6686 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6687 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6688
6689 switch (qc->tf.protocol) {
6690 case ATA_PROT_NODATA:
6691 case ATA_PROT_PIO:
6692 break;
6693
6694 case ATA_PROT_DMA:
6695 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6696 break;
6697
6698 case ATAPI_PROT_PIO:
6699 case ATAPI_PROT_NODATA:
6700 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6701 break;
6702
6703 case ATAPI_PROT_DMA:
6704 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6705 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6706 break;
6707
6708 default:
6709 WARN_ON(1);
6710 spin_unlock(&ipr_cmd->hrrq->_lock);
6711 return AC_ERR_INVALID;
6712 }
6713
6714 ipr_send_command(ipr_cmd);
6715 spin_unlock(&ipr_cmd->hrrq->_lock);
6716
6717 return 0;
6718 }
6719
6720 /**
6721 * ipr_qc_fill_rtf - Read result TF
6722 * @qc: ATA queued command
6723 *
6724 * Return value:
6725 * true
6726 **/
6727 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6728 {
6729 struct ipr_sata_port *sata_port = qc->ap->private_data;
6730 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6731 struct ata_taskfile *tf = &qc->result_tf;
6732
6733 tf->feature = g->error;
6734 tf->nsect = g->nsect;
6735 tf->lbal = g->lbal;
6736 tf->lbam = g->lbam;
6737 tf->lbah = g->lbah;
6738 tf->device = g->device;
6739 tf->command = g->status;
6740 tf->hob_nsect = g->hob_nsect;
6741 tf->hob_lbal = g->hob_lbal;
6742 tf->hob_lbam = g->hob_lbam;
6743 tf->hob_lbah = g->hob_lbah;
6744
6745 return true;
6746 }
6747
6748 static struct ata_port_operations ipr_sata_ops = {
6749 .phy_reset = ipr_ata_phy_reset,
6750 .hardreset = ipr_sata_reset,
6751 .post_internal_cmd = ipr_ata_post_internal,
6752 .qc_prep = ata_noop_qc_prep,
6753 .qc_defer = ipr_qc_defer,
6754 .qc_issue = ipr_qc_issue,
6755 .qc_fill_rtf = ipr_qc_fill_rtf,
6756 .port_start = ata_sas_port_start,
6757 .port_stop = ata_sas_port_stop
6758 };
6759
6760 static struct ata_port_info sata_port_info = {
6761 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
6762 .pio_mask = ATA_PIO4_ONLY,
6763 .mwdma_mask = ATA_MWDMA2,
6764 .udma_mask = ATA_UDMA6,
6765 .port_ops = &ipr_sata_ops
6766 };
6767
6768 #ifdef CONFIG_PPC_PSERIES
6769 static const u16 ipr_blocked_processors[] = {
6770 PVR_NORTHSTAR,
6771 PVR_PULSAR,
6772 PVR_POWER4,
6773 PVR_ICESTAR,
6774 PVR_SSTAR,
6775 PVR_POWER4p,
6776 PVR_630,
6777 PVR_630p
6778 };
6779
6780 /**
6781 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6782 * @ioa_cfg: ioa cfg struct
6783 *
6784 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6785 * certain pSeries hardware. This function determines if the given
6786 * adapter is in one of these confgurations or not.
6787 *
6788 * Return value:
6789 * 1 if adapter is not supported / 0 if adapter is supported
6790 **/
6791 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6792 {
6793 int i;
6794
6795 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6796 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6797 if (pvr_version_is(ipr_blocked_processors[i]))
6798 return 1;
6799 }
6800 }
6801 return 0;
6802 }
6803 #else
6804 #define ipr_invalid_adapter(ioa_cfg) 0
6805 #endif
6806
6807 /**
6808 * ipr_ioa_bringdown_done - IOA bring down completion.
6809 * @ipr_cmd: ipr command struct
6810 *
6811 * This function processes the completion of an adapter bring down.
6812 * It wakes any reset sleepers.
6813 *
6814 * Return value:
6815 * IPR_RC_JOB_RETURN
6816 **/
6817 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6818 {
6819 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6820 int i;
6821
6822 ENTER;
6823 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6824 ipr_trace;
6825 spin_unlock_irq(ioa_cfg->host->host_lock);
6826 scsi_unblock_requests(ioa_cfg->host);
6827 spin_lock_irq(ioa_cfg->host->host_lock);
6828 }
6829
6830 ioa_cfg->in_reset_reload = 0;
6831 ioa_cfg->reset_retries = 0;
6832 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6833 spin_lock(&ioa_cfg->hrrq[i]._lock);
6834 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6835 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6836 }
6837 wmb();
6838
6839 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6840 wake_up_all(&ioa_cfg->reset_wait_q);
6841 LEAVE;
6842
6843 return IPR_RC_JOB_RETURN;
6844 }
6845
6846 /**
6847 * ipr_ioa_reset_done - IOA reset completion.
6848 * @ipr_cmd: ipr command struct
6849 *
6850 * This function processes the completion of an adapter reset.
6851 * It schedules any necessary mid-layer add/removes and
6852 * wakes any reset sleepers.
6853 *
6854 * Return value:
6855 * IPR_RC_JOB_RETURN
6856 **/
6857 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6858 {
6859 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6860 struct ipr_resource_entry *res;
6861 struct ipr_hostrcb *hostrcb, *temp;
6862 int i = 0, j;
6863
6864 ENTER;
6865 ioa_cfg->in_reset_reload = 0;
6866 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
6867 spin_lock(&ioa_cfg->hrrq[j]._lock);
6868 ioa_cfg->hrrq[j].allow_cmds = 1;
6869 spin_unlock(&ioa_cfg->hrrq[j]._lock);
6870 }
6871 wmb();
6872 ioa_cfg->reset_cmd = NULL;
6873 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6874
6875 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6876 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6877 ipr_trace;
6878 break;
6879 }
6880 }
6881 schedule_work(&ioa_cfg->work_q);
6882
6883 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6884 list_del(&hostrcb->queue);
6885 if (i++ < IPR_NUM_LOG_HCAMS)
6886 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6887 else
6888 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6889 }
6890
6891 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6892 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6893
6894 ioa_cfg->reset_retries = 0;
6895 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6896 wake_up_all(&ioa_cfg->reset_wait_q);
6897
6898 spin_unlock(ioa_cfg->host->host_lock);
6899 scsi_unblock_requests(ioa_cfg->host);
6900 spin_lock(ioa_cfg->host->host_lock);
6901
6902 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6903 scsi_block_requests(ioa_cfg->host);
6904
6905 LEAVE;
6906 return IPR_RC_JOB_RETURN;
6907 }
6908
6909 /**
6910 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6911 * @supported_dev: supported device struct
6912 * @vpids: vendor product id struct
6913 *
6914 * Return value:
6915 * none
6916 **/
6917 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6918 struct ipr_std_inq_vpids *vpids)
6919 {
6920 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6921 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6922 supported_dev->num_records = 1;
6923 supported_dev->data_length =
6924 cpu_to_be16(sizeof(struct ipr_supported_device));
6925 supported_dev->reserved = 0;
6926 }
6927
6928 /**
6929 * ipr_set_supported_devs - Send Set Supported Devices for a device
6930 * @ipr_cmd: ipr command struct
6931 *
6932 * This function sends a Set Supported Devices to the adapter
6933 *
6934 * Return value:
6935 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6936 **/
6937 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6938 {
6939 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6940 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6941 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6942 struct ipr_resource_entry *res = ipr_cmd->u.res;
6943
6944 ipr_cmd->job_step = ipr_ioa_reset_done;
6945
6946 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6947 if (!ipr_is_scsi_disk(res))
6948 continue;
6949
6950 ipr_cmd->u.res = res;
6951 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6952
6953 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6954 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6955 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6956
6957 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6958 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6959 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6960 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6961
6962 ipr_init_ioadl(ipr_cmd,
6963 ioa_cfg->vpd_cbs_dma +
6964 offsetof(struct ipr_misc_cbs, supp_dev),
6965 sizeof(struct ipr_supported_device),
6966 IPR_IOADL_FLAGS_WRITE_LAST);
6967
6968 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6969 IPR_SET_SUP_DEVICE_TIMEOUT);
6970
6971 if (!ioa_cfg->sis64)
6972 ipr_cmd->job_step = ipr_set_supported_devs;
6973 LEAVE;
6974 return IPR_RC_JOB_RETURN;
6975 }
6976
6977 LEAVE;
6978 return IPR_RC_JOB_CONTINUE;
6979 }
6980
6981 /**
6982 * ipr_get_mode_page - Locate specified mode page
6983 * @mode_pages: mode page buffer
6984 * @page_code: page code to find
6985 * @len: minimum required length for mode page
6986 *
6987 * Return value:
6988 * pointer to mode page / NULL on failure
6989 **/
6990 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6991 u32 page_code, u32 len)
6992 {
6993 struct ipr_mode_page_hdr *mode_hdr;
6994 u32 page_length;
6995 u32 length;
6996
6997 if (!mode_pages || (mode_pages->hdr.length == 0))
6998 return NULL;
6999
7000 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7001 mode_hdr = (struct ipr_mode_page_hdr *)
7002 (mode_pages->data + mode_pages->hdr.block_desc_len);
7003
7004 while (length) {
7005 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7006 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7007 return mode_hdr;
7008 break;
7009 } else {
7010 page_length = (sizeof(struct ipr_mode_page_hdr) +
7011 mode_hdr->page_length);
7012 length -= page_length;
7013 mode_hdr = (struct ipr_mode_page_hdr *)
7014 ((unsigned long)mode_hdr + page_length);
7015 }
7016 }
7017 return NULL;
7018 }
7019
7020 /**
7021 * ipr_check_term_power - Check for term power errors
7022 * @ioa_cfg: ioa config struct
7023 * @mode_pages: IOAFP mode pages buffer
7024 *
7025 * Check the IOAFP's mode page 28 for term power errors
7026 *
7027 * Return value:
7028 * nothing
7029 **/
7030 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7031 struct ipr_mode_pages *mode_pages)
7032 {
7033 int i;
7034 int entry_length;
7035 struct ipr_dev_bus_entry *bus;
7036 struct ipr_mode_page28 *mode_page;
7037
7038 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7039 sizeof(struct ipr_mode_page28));
7040
7041 entry_length = mode_page->entry_length;
7042
7043 bus = mode_page->bus;
7044
7045 for (i = 0; i < mode_page->num_entries; i++) {
7046 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7047 dev_err(&ioa_cfg->pdev->dev,
7048 "Term power is absent on scsi bus %d\n",
7049 bus->res_addr.bus);
7050 }
7051
7052 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7053 }
7054 }
7055
7056 /**
7057 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7058 * @ioa_cfg: ioa config struct
7059 *
7060 * Looks through the config table checking for SES devices. If
7061 * the SES device is in the SES table indicating a maximum SCSI
7062 * bus speed, the speed is limited for the bus.
7063 *
7064 * Return value:
7065 * none
7066 **/
7067 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7068 {
7069 u32 max_xfer_rate;
7070 int i;
7071
7072 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7073 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7074 ioa_cfg->bus_attr[i].bus_width);
7075
7076 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7077 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7078 }
7079 }
7080
7081 /**
7082 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7083 * @ioa_cfg: ioa config struct
7084 * @mode_pages: mode page 28 buffer
7085 *
7086 * Updates mode page 28 based on driver configuration
7087 *
7088 * Return value:
7089 * none
7090 **/
7091 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7092 struct ipr_mode_pages *mode_pages)
7093 {
7094 int i, entry_length;
7095 struct ipr_dev_bus_entry *bus;
7096 struct ipr_bus_attributes *bus_attr;
7097 struct ipr_mode_page28 *mode_page;
7098
7099 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7100 sizeof(struct ipr_mode_page28));
7101
7102 entry_length = mode_page->entry_length;
7103
7104 /* Loop for each device bus entry */
7105 for (i = 0, bus = mode_page->bus;
7106 i < mode_page->num_entries;
7107 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7108 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7109 dev_err(&ioa_cfg->pdev->dev,
7110 "Invalid resource address reported: 0x%08X\n",
7111 IPR_GET_PHYS_LOC(bus->res_addr));
7112 continue;
7113 }
7114
7115 bus_attr = &ioa_cfg->bus_attr[i];
7116 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7117 bus->bus_width = bus_attr->bus_width;
7118 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7119 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7120 if (bus_attr->qas_enabled)
7121 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7122 else
7123 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7124 }
7125 }
7126
7127 /**
7128 * ipr_build_mode_select - Build a mode select command
7129 * @ipr_cmd: ipr command struct
7130 * @res_handle: resource handle to send command to
7131 * @parm: Byte 2 of Mode Sense command
7132 * @dma_addr: DMA buffer address
7133 * @xfer_len: data transfer length
7134 *
7135 * Return value:
7136 * none
7137 **/
7138 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7139 __be32 res_handle, u8 parm,
7140 dma_addr_t dma_addr, u8 xfer_len)
7141 {
7142 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7143
7144 ioarcb->res_handle = res_handle;
7145 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7146 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7147 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7148 ioarcb->cmd_pkt.cdb[1] = parm;
7149 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7150
7151 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7152 }
7153
7154 /**
7155 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7156 * @ipr_cmd: ipr command struct
7157 *
7158 * This function sets up the SCSI bus attributes and sends
7159 * a Mode Select for Page 28 to activate them.
7160 *
7161 * Return value:
7162 * IPR_RC_JOB_RETURN
7163 **/
7164 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7165 {
7166 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7167 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7168 int length;
7169
7170 ENTER;
7171 ipr_scsi_bus_speed_limit(ioa_cfg);
7172 ipr_check_term_power(ioa_cfg, mode_pages);
7173 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7174 length = mode_pages->hdr.length + 1;
7175 mode_pages->hdr.length = 0;
7176
7177 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7178 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7179 length);
7180
7181 ipr_cmd->job_step = ipr_set_supported_devs;
7182 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7183 struct ipr_resource_entry, queue);
7184 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7185
7186 LEAVE;
7187 return IPR_RC_JOB_RETURN;
7188 }
7189
7190 /**
7191 * ipr_build_mode_sense - Builds a mode sense command
7192 * @ipr_cmd: ipr command struct
7193 * @res: resource entry struct
7194 * @parm: Byte 2 of mode sense command
7195 * @dma_addr: DMA address of mode sense buffer
7196 * @xfer_len: Size of DMA buffer
7197 *
7198 * Return value:
7199 * none
7200 **/
7201 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7202 __be32 res_handle,
7203 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7204 {
7205 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7206
7207 ioarcb->res_handle = res_handle;
7208 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7209 ioarcb->cmd_pkt.cdb[2] = parm;
7210 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7211 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7212
7213 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7214 }
7215
7216 /**
7217 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7218 * @ipr_cmd: ipr command struct
7219 *
7220 * This function handles the failure of an IOA bringup command.
7221 *
7222 * Return value:
7223 * IPR_RC_JOB_RETURN
7224 **/
7225 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7226 {
7227 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7228 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7229
7230 dev_err(&ioa_cfg->pdev->dev,
7231 "0x%02X failed with IOASC: 0x%08X\n",
7232 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7233
7234 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7235 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7236 return IPR_RC_JOB_RETURN;
7237 }
7238
7239 /**
7240 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7241 * @ipr_cmd: ipr command struct
7242 *
7243 * This function handles the failure of a Mode Sense to the IOAFP.
7244 * Some adapters do not handle all mode pages.
7245 *
7246 * Return value:
7247 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7248 **/
7249 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7250 {
7251 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7252 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7253
7254 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7255 ipr_cmd->job_step = ipr_set_supported_devs;
7256 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7257 struct ipr_resource_entry, queue);
7258 return IPR_RC_JOB_CONTINUE;
7259 }
7260
7261 return ipr_reset_cmd_failed(ipr_cmd);
7262 }
7263
7264 /**
7265 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7266 * @ipr_cmd: ipr command struct
7267 *
7268 * This function send a Page 28 mode sense to the IOA to
7269 * retrieve SCSI bus attributes.
7270 *
7271 * Return value:
7272 * IPR_RC_JOB_RETURN
7273 **/
7274 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7275 {
7276 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7277
7278 ENTER;
7279 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7280 0x28, ioa_cfg->vpd_cbs_dma +
7281 offsetof(struct ipr_misc_cbs, mode_pages),
7282 sizeof(struct ipr_mode_pages));
7283
7284 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7285 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7286
7287 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7288
7289 LEAVE;
7290 return IPR_RC_JOB_RETURN;
7291 }
7292
7293 /**
7294 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7295 * @ipr_cmd: ipr command struct
7296 *
7297 * This function enables dual IOA RAID support if possible.
7298 *
7299 * Return value:
7300 * IPR_RC_JOB_RETURN
7301 **/
7302 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7303 {
7304 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7305 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7306 struct ipr_mode_page24 *mode_page;
7307 int length;
7308
7309 ENTER;
7310 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7311 sizeof(struct ipr_mode_page24));
7312
7313 if (mode_page)
7314 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7315
7316 length = mode_pages->hdr.length + 1;
7317 mode_pages->hdr.length = 0;
7318
7319 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7320 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7321 length);
7322
7323 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7324 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7325
7326 LEAVE;
7327 return IPR_RC_JOB_RETURN;
7328 }
7329
7330 /**
7331 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7332 * @ipr_cmd: ipr command struct
7333 *
7334 * This function handles the failure of a Mode Sense to the IOAFP.
7335 * Some adapters do not handle all mode pages.
7336 *
7337 * Return value:
7338 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7339 **/
7340 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7341 {
7342 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7343
7344 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7345 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7346 return IPR_RC_JOB_CONTINUE;
7347 }
7348
7349 return ipr_reset_cmd_failed(ipr_cmd);
7350 }
7351
7352 /**
7353 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7354 * @ipr_cmd: ipr command struct
7355 *
7356 * This function send a mode sense to the IOA to retrieve
7357 * the IOA Advanced Function Control mode page.
7358 *
7359 * Return value:
7360 * IPR_RC_JOB_RETURN
7361 **/
7362 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7363 {
7364 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7365
7366 ENTER;
7367 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7368 0x24, ioa_cfg->vpd_cbs_dma +
7369 offsetof(struct ipr_misc_cbs, mode_pages),
7370 sizeof(struct ipr_mode_pages));
7371
7372 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7373 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7374
7375 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7376
7377 LEAVE;
7378 return IPR_RC_JOB_RETURN;
7379 }
7380
7381 /**
7382 * ipr_init_res_table - Initialize the resource table
7383 * @ipr_cmd: ipr command struct
7384 *
7385 * This function looks through the existing resource table, comparing
7386 * it with the config table. This function will take care of old/new
7387 * devices and schedule adding/removing them from the mid-layer
7388 * as appropriate.
7389 *
7390 * Return value:
7391 * IPR_RC_JOB_CONTINUE
7392 **/
7393 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7394 {
7395 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7396 struct ipr_resource_entry *res, *temp;
7397 struct ipr_config_table_entry_wrapper cfgtew;
7398 int entries, found, flag, i;
7399 LIST_HEAD(old_res);
7400
7401 ENTER;
7402 if (ioa_cfg->sis64)
7403 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7404 else
7405 flag = ioa_cfg->u.cfg_table->hdr.flags;
7406
7407 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7408 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7409
7410 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7411 list_move_tail(&res->queue, &old_res);
7412
7413 if (ioa_cfg->sis64)
7414 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7415 else
7416 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7417
7418 for (i = 0; i < entries; i++) {
7419 if (ioa_cfg->sis64)
7420 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7421 else
7422 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7423 found = 0;
7424
7425 list_for_each_entry_safe(res, temp, &old_res, queue) {
7426 if (ipr_is_same_device(res, &cfgtew)) {
7427 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7428 found = 1;
7429 break;
7430 }
7431 }
7432
7433 if (!found) {
7434 if (list_empty(&ioa_cfg->free_res_q)) {
7435 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7436 break;
7437 }
7438
7439 found = 1;
7440 res = list_entry(ioa_cfg->free_res_q.next,
7441 struct ipr_resource_entry, queue);
7442 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7443 ipr_init_res_entry(res, &cfgtew);
7444 res->add_to_ml = 1;
7445 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7446 res->sdev->allow_restart = 1;
7447
7448 if (found)
7449 ipr_update_res_entry(res, &cfgtew);
7450 }
7451
7452 list_for_each_entry_safe(res, temp, &old_res, queue) {
7453 if (res->sdev) {
7454 res->del_from_ml = 1;
7455 res->res_handle = IPR_INVALID_RES_HANDLE;
7456 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7457 }
7458 }
7459
7460 list_for_each_entry_safe(res, temp, &old_res, queue) {
7461 ipr_clear_res_target(res);
7462 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7463 }
7464
7465 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7466 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7467 else
7468 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7469
7470 LEAVE;
7471 return IPR_RC_JOB_CONTINUE;
7472 }
7473
7474 /**
7475 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7476 * @ipr_cmd: ipr command struct
7477 *
7478 * This function sends a Query IOA Configuration command
7479 * to the adapter to retrieve the IOA configuration table.
7480 *
7481 * Return value:
7482 * IPR_RC_JOB_RETURN
7483 **/
7484 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7485 {
7486 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7487 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7488 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7489 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7490
7491 ENTER;
7492 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7493 ioa_cfg->dual_raid = 1;
7494 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7495 ucode_vpd->major_release, ucode_vpd->card_type,
7496 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7497 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7498 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7499
7500 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7501 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7502 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7503 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7504
7505 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7506 IPR_IOADL_FLAGS_READ_LAST);
7507
7508 ipr_cmd->job_step = ipr_init_res_table;
7509
7510 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7511
7512 LEAVE;
7513 return IPR_RC_JOB_RETURN;
7514 }
7515
7516 /**
7517 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7518 * @ipr_cmd: ipr command struct
7519 *
7520 * This utility function sends an inquiry to the adapter.
7521 *
7522 * Return value:
7523 * none
7524 **/
7525 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7526 dma_addr_t dma_addr, u8 xfer_len)
7527 {
7528 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7529
7530 ENTER;
7531 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7532 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7533
7534 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7535 ioarcb->cmd_pkt.cdb[1] = flags;
7536 ioarcb->cmd_pkt.cdb[2] = page;
7537 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7538
7539 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7540
7541 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7542 LEAVE;
7543 }
7544
7545 /**
7546 * ipr_inquiry_page_supported - Is the given inquiry page supported
7547 * @page0: inquiry page 0 buffer
7548 * @page: page code.
7549 *
7550 * This function determines if the specified inquiry page is supported.
7551 *
7552 * Return value:
7553 * 1 if page is supported / 0 if not
7554 **/
7555 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7556 {
7557 int i;
7558
7559 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7560 if (page0->page[i] == page)
7561 return 1;
7562
7563 return 0;
7564 }
7565
7566 /**
7567 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7568 * @ipr_cmd: ipr command struct
7569 *
7570 * This function sends a Page 0xD0 inquiry to the adapter
7571 * to retrieve adapter capabilities.
7572 *
7573 * Return value:
7574 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7575 **/
7576 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7577 {
7578 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7579 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7580 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7581
7582 ENTER;
7583 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7584 memset(cap, 0, sizeof(*cap));
7585
7586 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7587 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7588 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7589 sizeof(struct ipr_inquiry_cap));
7590 return IPR_RC_JOB_RETURN;
7591 }
7592
7593 LEAVE;
7594 return IPR_RC_JOB_CONTINUE;
7595 }
7596
7597 /**
7598 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7599 * @ipr_cmd: ipr command struct
7600 *
7601 * This function sends a Page 3 inquiry to the adapter
7602 * to retrieve software VPD information.
7603 *
7604 * Return value:
7605 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7606 **/
7607 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7608 {
7609 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7610
7611 ENTER;
7612
7613 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7614
7615 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7616 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7617 sizeof(struct ipr_inquiry_page3));
7618
7619 LEAVE;
7620 return IPR_RC_JOB_RETURN;
7621 }
7622
7623 /**
7624 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7625 * @ipr_cmd: ipr command struct
7626 *
7627 * This function sends a Page 0 inquiry to the adapter
7628 * to retrieve supported inquiry pages.
7629 *
7630 * Return value:
7631 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7632 **/
7633 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7634 {
7635 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7636 char type[5];
7637
7638 ENTER;
7639
7640 /* Grab the type out of the VPD and store it away */
7641 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7642 type[4] = '\0';
7643 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7644
7645 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7646
7647 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7648 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7649 sizeof(struct ipr_inquiry_page0));
7650
7651 LEAVE;
7652 return IPR_RC_JOB_RETURN;
7653 }
7654
7655 /**
7656 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7657 * @ipr_cmd: ipr command struct
7658 *
7659 * This function sends a standard inquiry to the adapter.
7660 *
7661 * Return value:
7662 * IPR_RC_JOB_RETURN
7663 **/
7664 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7665 {
7666 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7667
7668 ENTER;
7669 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7670
7671 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7672 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7673 sizeof(struct ipr_ioa_vpd));
7674
7675 LEAVE;
7676 return IPR_RC_JOB_RETURN;
7677 }
7678
7679 /**
7680 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7681 * @ipr_cmd: ipr command struct
7682 *
7683 * This function send an Identify Host Request Response Queue
7684 * command to establish the HRRQ with the adapter.
7685 *
7686 * Return value:
7687 * IPR_RC_JOB_RETURN
7688 **/
7689 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7690 {
7691 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7692 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7693 struct ipr_hrr_queue *hrrq;
7694
7695 ENTER;
7696 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7697 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7698
7699 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7700 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7701
7702 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7703 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7704
7705 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7706 if (ioa_cfg->sis64)
7707 ioarcb->cmd_pkt.cdb[1] = 0x1;
7708
7709 if (ioa_cfg->nvectors == 1)
7710 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7711 else
7712 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7713
7714 ioarcb->cmd_pkt.cdb[2] =
7715 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7716 ioarcb->cmd_pkt.cdb[3] =
7717 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7718 ioarcb->cmd_pkt.cdb[4] =
7719 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7720 ioarcb->cmd_pkt.cdb[5] =
7721 ((u64) hrrq->host_rrq_dma) & 0xff;
7722 ioarcb->cmd_pkt.cdb[7] =
7723 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7724 ioarcb->cmd_pkt.cdb[8] =
7725 (sizeof(u32) * hrrq->size) & 0xff;
7726
7727 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7728 ioarcb->cmd_pkt.cdb[9] =
7729 ioa_cfg->identify_hrrq_index;
7730
7731 if (ioa_cfg->sis64) {
7732 ioarcb->cmd_pkt.cdb[10] =
7733 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
7734 ioarcb->cmd_pkt.cdb[11] =
7735 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
7736 ioarcb->cmd_pkt.cdb[12] =
7737 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
7738 ioarcb->cmd_pkt.cdb[13] =
7739 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
7740 }
7741
7742 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7743 ioarcb->cmd_pkt.cdb[14] =
7744 ioa_cfg->identify_hrrq_index;
7745
7746 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7747 IPR_INTERNAL_TIMEOUT);
7748
7749 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
7750 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7751
7752 LEAVE;
7753 return IPR_RC_JOB_RETURN;
7754 }
7755
7756 LEAVE;
7757 return IPR_RC_JOB_CONTINUE;
7758 }
7759
7760 /**
7761 * ipr_reset_timer_done - Adapter reset timer function
7762 * @ipr_cmd: ipr command struct
7763 *
7764 * Description: This function is used in adapter reset processing
7765 * for timing events. If the reset_cmd pointer in the IOA
7766 * config struct is not this adapter's we are doing nested
7767 * resets and fail_all_ops will take care of freeing the
7768 * command block.
7769 *
7770 * Return value:
7771 * none
7772 **/
7773 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7774 {
7775 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7776 unsigned long lock_flags = 0;
7777
7778 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7779
7780 if (ioa_cfg->reset_cmd == ipr_cmd) {
7781 list_del(&ipr_cmd->queue);
7782 ipr_cmd->done(ipr_cmd);
7783 }
7784
7785 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7786 }
7787
7788 /**
7789 * ipr_reset_start_timer - Start a timer for adapter reset job
7790 * @ipr_cmd: ipr command struct
7791 * @timeout: timeout value
7792 *
7793 * Description: This function is used in adapter reset processing
7794 * for timing events. If the reset_cmd pointer in the IOA
7795 * config struct is not this adapter's we are doing nested
7796 * resets and fail_all_ops will take care of freeing the
7797 * command block.
7798 *
7799 * Return value:
7800 * none
7801 **/
7802 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7803 unsigned long timeout)
7804 {
7805
7806 ENTER;
7807 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7808 ipr_cmd->done = ipr_reset_ioa_job;
7809
7810 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7811 ipr_cmd->timer.expires = jiffies + timeout;
7812 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7813 add_timer(&ipr_cmd->timer);
7814 }
7815
7816 /**
7817 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7818 * @ioa_cfg: ioa cfg struct
7819 *
7820 * Return value:
7821 * nothing
7822 **/
7823 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7824 {
7825 struct ipr_hrr_queue *hrrq;
7826
7827 for_each_hrrq(hrrq, ioa_cfg) {
7828 spin_lock(&hrrq->_lock);
7829 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
7830
7831 /* Initialize Host RRQ pointers */
7832 hrrq->hrrq_start = hrrq->host_rrq;
7833 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
7834 hrrq->hrrq_curr = hrrq->hrrq_start;
7835 hrrq->toggle_bit = 1;
7836 spin_unlock(&hrrq->_lock);
7837 }
7838 wmb();
7839
7840 ioa_cfg->identify_hrrq_index = 0;
7841 if (ioa_cfg->hrrq_num == 1)
7842 atomic_set(&ioa_cfg->hrrq_index, 0);
7843 else
7844 atomic_set(&ioa_cfg->hrrq_index, 1);
7845
7846 /* Zero out config table */
7847 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7848 }
7849
7850 /**
7851 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7852 * @ipr_cmd: ipr command struct
7853 *
7854 * Return value:
7855 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7856 **/
7857 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7858 {
7859 unsigned long stage, stage_time;
7860 u32 feedback;
7861 volatile u32 int_reg;
7862 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7863 u64 maskval = 0;
7864
7865 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7866 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7867 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7868
7869 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7870
7871 /* sanity check the stage_time value */
7872 if (stage_time == 0)
7873 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7874 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7875 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7876 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7877 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7878
7879 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7880 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7881 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7882 stage_time = ioa_cfg->transop_timeout;
7883 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7884 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7885 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7886 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7887 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7888 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7889 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7890 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7891 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7892 return IPR_RC_JOB_CONTINUE;
7893 }
7894 }
7895
7896 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7897 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7898 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7899 ipr_cmd->done = ipr_reset_ioa_job;
7900 add_timer(&ipr_cmd->timer);
7901
7902 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7903
7904 return IPR_RC_JOB_RETURN;
7905 }
7906
7907 /**
7908 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7909 * @ipr_cmd: ipr command struct
7910 *
7911 * This function reinitializes some control blocks and
7912 * enables destructive diagnostics on the adapter.
7913 *
7914 * Return value:
7915 * IPR_RC_JOB_RETURN
7916 **/
7917 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7918 {
7919 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7920 volatile u32 int_reg;
7921 volatile u64 maskval;
7922 int i;
7923
7924 ENTER;
7925 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7926 ipr_init_ioa_mem(ioa_cfg);
7927
7928 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
7929 spin_lock(&ioa_cfg->hrrq[i]._lock);
7930 ioa_cfg->hrrq[i].allow_interrupts = 1;
7931 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7932 }
7933 wmb();
7934 if (ioa_cfg->sis64) {
7935 /* Set the adapter to the correct endian mode. */
7936 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7937 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7938 }
7939
7940 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7941
7942 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7943 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7944 ioa_cfg->regs.clr_interrupt_mask_reg32);
7945 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7946 return IPR_RC_JOB_CONTINUE;
7947 }
7948
7949 /* Enable destructive diagnostics on IOA */
7950 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7951
7952 if (ioa_cfg->sis64) {
7953 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7954 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7955 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7956 } else
7957 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7958
7959 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7960
7961 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7962
7963 if (ioa_cfg->sis64) {
7964 ipr_cmd->job_step = ipr_reset_next_stage;
7965 return IPR_RC_JOB_CONTINUE;
7966 }
7967
7968 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7969 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7970 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7971 ipr_cmd->done = ipr_reset_ioa_job;
7972 add_timer(&ipr_cmd->timer);
7973 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7974
7975 LEAVE;
7976 return IPR_RC_JOB_RETURN;
7977 }
7978
7979 /**
7980 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7981 * @ipr_cmd: ipr command struct
7982 *
7983 * This function is invoked when an adapter dump has run out
7984 * of processing time.
7985 *
7986 * Return value:
7987 * IPR_RC_JOB_CONTINUE
7988 **/
7989 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7990 {
7991 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7992
7993 if (ioa_cfg->sdt_state == GET_DUMP)
7994 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7995 else if (ioa_cfg->sdt_state == READ_DUMP)
7996 ioa_cfg->sdt_state = ABORT_DUMP;
7997
7998 ioa_cfg->dump_timeout = 1;
7999 ipr_cmd->job_step = ipr_reset_alert;
8000
8001 return IPR_RC_JOB_CONTINUE;
8002 }
8003
8004 /**
8005 * ipr_unit_check_no_data - Log a unit check/no data error log
8006 * @ioa_cfg: ioa config struct
8007 *
8008 * Logs an error indicating the adapter unit checked, but for some
8009 * reason, we were unable to fetch the unit check buffer.
8010 *
8011 * Return value:
8012 * nothing
8013 **/
8014 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8015 {
8016 ioa_cfg->errors_logged++;
8017 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8018 }
8019
8020 /**
8021 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8022 * @ioa_cfg: ioa config struct
8023 *
8024 * Fetches the unit check buffer from the adapter by clocking the data
8025 * through the mailbox register.
8026 *
8027 * Return value:
8028 * nothing
8029 **/
8030 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8031 {
8032 unsigned long mailbox;
8033 struct ipr_hostrcb *hostrcb;
8034 struct ipr_uc_sdt sdt;
8035 int rc, length;
8036 u32 ioasc;
8037
8038 mailbox = readl(ioa_cfg->ioa_mailbox);
8039
8040 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8041 ipr_unit_check_no_data(ioa_cfg);
8042 return;
8043 }
8044
8045 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8046 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8047 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8048
8049 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8050 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8051 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8052 ipr_unit_check_no_data(ioa_cfg);
8053 return;
8054 }
8055
8056 /* Find length of the first sdt entry (UC buffer) */
8057 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8058 length = be32_to_cpu(sdt.entry[0].end_token);
8059 else
8060 length = (be32_to_cpu(sdt.entry[0].end_token) -
8061 be32_to_cpu(sdt.entry[0].start_token)) &
8062 IPR_FMT2_MBX_ADDR_MASK;
8063
8064 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8065 struct ipr_hostrcb, queue);
8066 list_del(&hostrcb->queue);
8067 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8068
8069 rc = ipr_get_ldump_data_section(ioa_cfg,
8070 be32_to_cpu(sdt.entry[0].start_token),
8071 (__be32 *)&hostrcb->hcam,
8072 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8073
8074 if (!rc) {
8075 ipr_handle_log_data(ioa_cfg, hostrcb);
8076 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8077 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8078 ioa_cfg->sdt_state == GET_DUMP)
8079 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8080 } else
8081 ipr_unit_check_no_data(ioa_cfg);
8082
8083 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8084 }
8085
8086 /**
8087 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8088 * @ipr_cmd: ipr command struct
8089 *
8090 * Description: This function will call to get the unit check buffer.
8091 *
8092 * Return value:
8093 * IPR_RC_JOB_RETURN
8094 **/
8095 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8096 {
8097 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8098
8099 ENTER;
8100 ioa_cfg->ioa_unit_checked = 0;
8101 ipr_get_unit_check_buffer(ioa_cfg);
8102 ipr_cmd->job_step = ipr_reset_alert;
8103 ipr_reset_start_timer(ipr_cmd, 0);
8104
8105 LEAVE;
8106 return IPR_RC_JOB_RETURN;
8107 }
8108
8109 /**
8110 * ipr_reset_restore_cfg_space - Restore PCI config space.
8111 * @ipr_cmd: ipr command struct
8112 *
8113 * Description: This function restores the saved PCI config space of
8114 * the adapter, fails all outstanding ops back to the callers, and
8115 * fetches the dump/unit check if applicable to this reset.
8116 *
8117 * Return value:
8118 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8119 **/
8120 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8121 {
8122 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8123 u32 int_reg;
8124
8125 ENTER;
8126 ioa_cfg->pdev->state_saved = true;
8127 pci_restore_state(ioa_cfg->pdev);
8128
8129 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8130 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8131 return IPR_RC_JOB_CONTINUE;
8132 }
8133
8134 ipr_fail_all_ops(ioa_cfg);
8135
8136 if (ioa_cfg->sis64) {
8137 /* Set the adapter to the correct endian mode. */
8138 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8139 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8140 }
8141
8142 if (ioa_cfg->ioa_unit_checked) {
8143 if (ioa_cfg->sis64) {
8144 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8145 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8146 return IPR_RC_JOB_RETURN;
8147 } else {
8148 ioa_cfg->ioa_unit_checked = 0;
8149 ipr_get_unit_check_buffer(ioa_cfg);
8150 ipr_cmd->job_step = ipr_reset_alert;
8151 ipr_reset_start_timer(ipr_cmd, 0);
8152 return IPR_RC_JOB_RETURN;
8153 }
8154 }
8155
8156 if (ioa_cfg->in_ioa_bringdown) {
8157 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8158 } else {
8159 ipr_cmd->job_step = ipr_reset_enable_ioa;
8160
8161 if (GET_DUMP == ioa_cfg->sdt_state) {
8162 ioa_cfg->sdt_state = READ_DUMP;
8163 ioa_cfg->dump_timeout = 0;
8164 if (ioa_cfg->sis64)
8165 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8166 else
8167 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8168 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8169 schedule_work(&ioa_cfg->work_q);
8170 return IPR_RC_JOB_RETURN;
8171 }
8172 }
8173
8174 LEAVE;
8175 return IPR_RC_JOB_CONTINUE;
8176 }
8177
8178 /**
8179 * ipr_reset_bist_done - BIST has completed on the adapter.
8180 * @ipr_cmd: ipr command struct
8181 *
8182 * Description: Unblock config space and resume the reset process.
8183 *
8184 * Return value:
8185 * IPR_RC_JOB_CONTINUE
8186 **/
8187 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8188 {
8189 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8190
8191 ENTER;
8192 if (ioa_cfg->cfg_locked)
8193 pci_cfg_access_unlock(ioa_cfg->pdev);
8194 ioa_cfg->cfg_locked = 0;
8195 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8196 LEAVE;
8197 return IPR_RC_JOB_CONTINUE;
8198 }
8199
8200 /**
8201 * ipr_reset_start_bist - Run BIST on the adapter.
8202 * @ipr_cmd: ipr command struct
8203 *
8204 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8205 *
8206 * Return value:
8207 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8208 **/
8209 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8210 {
8211 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8212 int rc = PCIBIOS_SUCCESSFUL;
8213
8214 ENTER;
8215 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8216 writel(IPR_UPROCI_SIS64_START_BIST,
8217 ioa_cfg->regs.set_uproc_interrupt_reg32);
8218 else
8219 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8220
8221 if (rc == PCIBIOS_SUCCESSFUL) {
8222 ipr_cmd->job_step = ipr_reset_bist_done;
8223 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8224 rc = IPR_RC_JOB_RETURN;
8225 } else {
8226 if (ioa_cfg->cfg_locked)
8227 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8228 ioa_cfg->cfg_locked = 0;
8229 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8230 rc = IPR_RC_JOB_CONTINUE;
8231 }
8232
8233 LEAVE;
8234 return rc;
8235 }
8236
8237 /**
8238 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8239 * @ipr_cmd: ipr command struct
8240 *
8241 * Description: This clears PCI reset to the adapter and delays two seconds.
8242 *
8243 * Return value:
8244 * IPR_RC_JOB_RETURN
8245 **/
8246 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8247 {
8248 ENTER;
8249 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
8250 ipr_cmd->job_step = ipr_reset_bist_done;
8251 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8252 LEAVE;
8253 return IPR_RC_JOB_RETURN;
8254 }
8255
8256 /**
8257 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8258 * @ipr_cmd: ipr command struct
8259 *
8260 * Description: This asserts PCI reset to the adapter.
8261 *
8262 * Return value:
8263 * IPR_RC_JOB_RETURN
8264 **/
8265 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8266 {
8267 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8268 struct pci_dev *pdev = ioa_cfg->pdev;
8269
8270 ENTER;
8271 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8272 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8273 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
8274 LEAVE;
8275 return IPR_RC_JOB_RETURN;
8276 }
8277
8278 /**
8279 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8280 * @ipr_cmd: ipr command struct
8281 *
8282 * Description: This attempts to block config access to the IOA.
8283 *
8284 * Return value:
8285 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8286 **/
8287 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8288 {
8289 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8290 int rc = IPR_RC_JOB_CONTINUE;
8291
8292 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8293 ioa_cfg->cfg_locked = 1;
8294 ipr_cmd->job_step = ioa_cfg->reset;
8295 } else {
8296 if (ipr_cmd->u.time_left) {
8297 rc = IPR_RC_JOB_RETURN;
8298 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8299 ipr_reset_start_timer(ipr_cmd,
8300 IPR_CHECK_FOR_RESET_TIMEOUT);
8301 } else {
8302 ipr_cmd->job_step = ioa_cfg->reset;
8303 dev_err(&ioa_cfg->pdev->dev,
8304 "Timed out waiting to lock config access. Resetting anyway.\n");
8305 }
8306 }
8307
8308 return rc;
8309 }
8310
8311 /**
8312 * ipr_reset_block_config_access - Block config access to the IOA
8313 * @ipr_cmd: ipr command struct
8314 *
8315 * Description: This attempts to block config access to the IOA
8316 *
8317 * Return value:
8318 * IPR_RC_JOB_CONTINUE
8319 **/
8320 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8321 {
8322 ipr_cmd->ioa_cfg->cfg_locked = 0;
8323 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8324 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8325 return IPR_RC_JOB_CONTINUE;
8326 }
8327
8328 /**
8329 * ipr_reset_allowed - Query whether or not IOA can be reset
8330 * @ioa_cfg: ioa config struct
8331 *
8332 * Return value:
8333 * 0 if reset not allowed / non-zero if reset is allowed
8334 **/
8335 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8336 {
8337 volatile u32 temp_reg;
8338
8339 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8340 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8341 }
8342
8343 /**
8344 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8345 * @ipr_cmd: ipr command struct
8346 *
8347 * Description: This function waits for adapter permission to run BIST,
8348 * then runs BIST. If the adapter does not give permission after a
8349 * reasonable time, we will reset the adapter anyway. The impact of
8350 * resetting the adapter without warning the adapter is the risk of
8351 * losing the persistent error log on the adapter. If the adapter is
8352 * reset while it is writing to the flash on the adapter, the flash
8353 * segment will have bad ECC and be zeroed.
8354 *
8355 * Return value:
8356 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8357 **/
8358 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8359 {
8360 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8361 int rc = IPR_RC_JOB_RETURN;
8362
8363 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8364 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8365 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8366 } else {
8367 ipr_cmd->job_step = ipr_reset_block_config_access;
8368 rc = IPR_RC_JOB_CONTINUE;
8369 }
8370
8371 return rc;
8372 }
8373
8374 /**
8375 * ipr_reset_alert - Alert the adapter of a pending reset
8376 * @ipr_cmd: ipr command struct
8377 *
8378 * Description: This function alerts the adapter that it will be reset.
8379 * If memory space is not currently enabled, proceed directly
8380 * to running BIST on the adapter. The timer must always be started
8381 * so we guarantee we do not run BIST from ipr_isr.
8382 *
8383 * Return value:
8384 * IPR_RC_JOB_RETURN
8385 **/
8386 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8387 {
8388 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8389 u16 cmd_reg;
8390 int rc;
8391
8392 ENTER;
8393 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8394
8395 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8396 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8397 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8398 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8399 } else {
8400 ipr_cmd->job_step = ipr_reset_block_config_access;
8401 }
8402
8403 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8404 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8405
8406 LEAVE;
8407 return IPR_RC_JOB_RETURN;
8408 }
8409
8410 /**
8411 * ipr_reset_ucode_download_done - Microcode download completion
8412 * @ipr_cmd: ipr command struct
8413 *
8414 * Description: This function unmaps the microcode download buffer.
8415 *
8416 * Return value:
8417 * IPR_RC_JOB_CONTINUE
8418 **/
8419 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8420 {
8421 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8422 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8423
8424 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
8425 sglist->num_sg, DMA_TO_DEVICE);
8426
8427 ipr_cmd->job_step = ipr_reset_alert;
8428 return IPR_RC_JOB_CONTINUE;
8429 }
8430
8431 /**
8432 * ipr_reset_ucode_download - Download microcode to the adapter
8433 * @ipr_cmd: ipr command struct
8434 *
8435 * Description: This function checks to see if it there is microcode
8436 * to download to the adapter. If there is, a download is performed.
8437 *
8438 * Return value:
8439 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8440 **/
8441 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8442 {
8443 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8444 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8445
8446 ENTER;
8447 ipr_cmd->job_step = ipr_reset_alert;
8448
8449 if (!sglist)
8450 return IPR_RC_JOB_CONTINUE;
8451
8452 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8453 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8454 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8455 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8456 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8457 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8458 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8459
8460 if (ioa_cfg->sis64)
8461 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8462 else
8463 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8464 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8465
8466 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8467 IPR_WRITE_BUFFER_TIMEOUT);
8468
8469 LEAVE;
8470 return IPR_RC_JOB_RETURN;
8471 }
8472
8473 /**
8474 * ipr_reset_shutdown_ioa - Shutdown the adapter
8475 * @ipr_cmd: ipr command struct
8476 *
8477 * Description: This function issues an adapter shutdown of the
8478 * specified type to the specified adapter as part of the
8479 * adapter reset job.
8480 *
8481 * Return value:
8482 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8483 **/
8484 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8485 {
8486 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8487 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8488 unsigned long timeout;
8489 int rc = IPR_RC_JOB_CONTINUE;
8490
8491 ENTER;
8492 if (shutdown_type != IPR_SHUTDOWN_NONE &&
8493 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8494 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8495 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8496 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8497 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8498
8499 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8500 timeout = IPR_SHUTDOWN_TIMEOUT;
8501 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8502 timeout = IPR_INTERNAL_TIMEOUT;
8503 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8504 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8505 else
8506 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8507
8508 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8509
8510 rc = IPR_RC_JOB_RETURN;
8511 ipr_cmd->job_step = ipr_reset_ucode_download;
8512 } else
8513 ipr_cmd->job_step = ipr_reset_alert;
8514
8515 LEAVE;
8516 return rc;
8517 }
8518
8519 /**
8520 * ipr_reset_ioa_job - Adapter reset job
8521 * @ipr_cmd: ipr command struct
8522 *
8523 * Description: This function is the job router for the adapter reset job.
8524 *
8525 * Return value:
8526 * none
8527 **/
8528 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8529 {
8530 u32 rc, ioasc;
8531 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8532
8533 do {
8534 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8535
8536 if (ioa_cfg->reset_cmd != ipr_cmd) {
8537 /*
8538 * We are doing nested adapter resets and this is
8539 * not the current reset job.
8540 */
8541 list_add_tail(&ipr_cmd->queue,
8542 &ipr_cmd->hrrq->hrrq_free_q);
8543 return;
8544 }
8545
8546 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8547 rc = ipr_cmd->job_step_failed(ipr_cmd);
8548 if (rc == IPR_RC_JOB_RETURN)
8549 return;
8550 }
8551
8552 ipr_reinit_ipr_cmnd(ipr_cmd);
8553 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8554 rc = ipr_cmd->job_step(ipr_cmd);
8555 } while (rc == IPR_RC_JOB_CONTINUE);
8556 }
8557
8558 /**
8559 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8560 * @ioa_cfg: ioa config struct
8561 * @job_step: first job step of reset job
8562 * @shutdown_type: shutdown type
8563 *
8564 * Description: This function will initiate the reset of the given adapter
8565 * starting at the selected job step.
8566 * If the caller needs to wait on the completion of the reset,
8567 * the caller must sleep on the reset_wait_q.
8568 *
8569 * Return value:
8570 * none
8571 **/
8572 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8573 int (*job_step) (struct ipr_cmnd *),
8574 enum ipr_shutdown_type shutdown_type)
8575 {
8576 struct ipr_cmnd *ipr_cmd;
8577 int i;
8578
8579 ioa_cfg->in_reset_reload = 1;
8580 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8581 spin_lock(&ioa_cfg->hrrq[i]._lock);
8582 ioa_cfg->hrrq[i].allow_cmds = 0;
8583 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8584 }
8585 wmb();
8586 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
8587 scsi_block_requests(ioa_cfg->host);
8588
8589 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
8590 ioa_cfg->reset_cmd = ipr_cmd;
8591 ipr_cmd->job_step = job_step;
8592 ipr_cmd->u.shutdown_type = shutdown_type;
8593
8594 ipr_reset_ioa_job(ipr_cmd);
8595 }
8596
8597 /**
8598 * ipr_initiate_ioa_reset - Initiate an adapter reset
8599 * @ioa_cfg: ioa config struct
8600 * @shutdown_type: shutdown type
8601 *
8602 * Description: This function will initiate the reset of the given adapter.
8603 * If the caller needs to wait on the completion of the reset,
8604 * the caller must sleep on the reset_wait_q.
8605 *
8606 * Return value:
8607 * none
8608 **/
8609 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8610 enum ipr_shutdown_type shutdown_type)
8611 {
8612 int i;
8613
8614 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
8615 return;
8616
8617 if (ioa_cfg->in_reset_reload) {
8618 if (ioa_cfg->sdt_state == GET_DUMP)
8619 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8620 else if (ioa_cfg->sdt_state == READ_DUMP)
8621 ioa_cfg->sdt_state = ABORT_DUMP;
8622 }
8623
8624 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
8625 dev_err(&ioa_cfg->pdev->dev,
8626 "IOA taken offline - error recovery failed\n");
8627
8628 ioa_cfg->reset_retries = 0;
8629 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8630 spin_lock(&ioa_cfg->hrrq[i]._lock);
8631 ioa_cfg->hrrq[i].ioa_is_dead = 1;
8632 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8633 }
8634 wmb();
8635
8636 if (ioa_cfg->in_ioa_bringdown) {
8637 ioa_cfg->reset_cmd = NULL;
8638 ioa_cfg->in_reset_reload = 0;
8639 ipr_fail_all_ops(ioa_cfg);
8640 wake_up_all(&ioa_cfg->reset_wait_q);
8641
8642 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
8643 spin_unlock_irq(ioa_cfg->host->host_lock);
8644 scsi_unblock_requests(ioa_cfg->host);
8645 spin_lock_irq(ioa_cfg->host->host_lock);
8646 }
8647 return;
8648 } else {
8649 ioa_cfg->in_ioa_bringdown = 1;
8650 shutdown_type = IPR_SHUTDOWN_NONE;
8651 }
8652 }
8653
8654 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
8655 shutdown_type);
8656 }
8657
8658 /**
8659 * ipr_reset_freeze - Hold off all I/O activity
8660 * @ipr_cmd: ipr command struct
8661 *
8662 * Description: If the PCI slot is frozen, hold off all I/O
8663 * activity; then, as soon as the slot is available again,
8664 * initiate an adapter reset.
8665 */
8666 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
8667 {
8668 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8669 int i;
8670
8671 /* Disallow new interrupts, avoid loop */
8672 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8673 spin_lock(&ioa_cfg->hrrq[i]._lock);
8674 ioa_cfg->hrrq[i].allow_interrupts = 0;
8675 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8676 }
8677 wmb();
8678 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8679 ipr_cmd->done = ipr_reset_ioa_job;
8680 return IPR_RC_JOB_RETURN;
8681 }
8682
8683 /**
8684 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
8685 * @pdev: PCI device struct
8686 *
8687 * Description: This routine is called to tell us that the MMIO
8688 * access to the IOA has been restored
8689 */
8690 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
8691 {
8692 unsigned long flags = 0;
8693 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8694
8695 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8696 if (!ioa_cfg->probe_done)
8697 pci_save_state(pdev);
8698 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8699 return PCI_ERS_RESULT_NEED_RESET;
8700 }
8701
8702 /**
8703 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
8704 * @pdev: PCI device struct
8705 *
8706 * Description: This routine is called to tell us that the PCI bus
8707 * is down. Can't do anything here, except put the device driver
8708 * into a holding pattern, waiting for the PCI bus to come back.
8709 */
8710 static void ipr_pci_frozen(struct pci_dev *pdev)
8711 {
8712 unsigned long flags = 0;
8713 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8714
8715 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8716 if (ioa_cfg->probe_done)
8717 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
8718 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8719 }
8720
8721 /**
8722 * ipr_pci_slot_reset - Called when PCI slot has been reset.
8723 * @pdev: PCI device struct
8724 *
8725 * Description: This routine is called by the pci error recovery
8726 * code after the PCI slot has been reset, just before we
8727 * should resume normal operations.
8728 */
8729 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
8730 {
8731 unsigned long flags = 0;
8732 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8733
8734 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8735 if (ioa_cfg->probe_done) {
8736 if (ioa_cfg->needs_warm_reset)
8737 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8738 else
8739 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
8740 IPR_SHUTDOWN_NONE);
8741 } else
8742 wake_up_all(&ioa_cfg->eeh_wait_q);
8743 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8744 return PCI_ERS_RESULT_RECOVERED;
8745 }
8746
8747 /**
8748 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8749 * @pdev: PCI device struct
8750 *
8751 * Description: This routine is called when the PCI bus has
8752 * permanently failed.
8753 */
8754 static void ipr_pci_perm_failure(struct pci_dev *pdev)
8755 {
8756 unsigned long flags = 0;
8757 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8758 int i;
8759
8760 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8761 if (ioa_cfg->probe_done) {
8762 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8763 ioa_cfg->sdt_state = ABORT_DUMP;
8764 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
8765 ioa_cfg->in_ioa_bringdown = 1;
8766 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8767 spin_lock(&ioa_cfg->hrrq[i]._lock);
8768 ioa_cfg->hrrq[i].allow_cmds = 0;
8769 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8770 }
8771 wmb();
8772 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8773 } else
8774 wake_up_all(&ioa_cfg->eeh_wait_q);
8775 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8776 }
8777
8778 /**
8779 * ipr_pci_error_detected - Called when a PCI error is detected.
8780 * @pdev: PCI device struct
8781 * @state: PCI channel state
8782 *
8783 * Description: Called when a PCI error is detected.
8784 *
8785 * Return value:
8786 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8787 */
8788 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8789 pci_channel_state_t state)
8790 {
8791 switch (state) {
8792 case pci_channel_io_frozen:
8793 ipr_pci_frozen(pdev);
8794 return PCI_ERS_RESULT_CAN_RECOVER;
8795 case pci_channel_io_perm_failure:
8796 ipr_pci_perm_failure(pdev);
8797 return PCI_ERS_RESULT_DISCONNECT;
8798 break;
8799 default:
8800 break;
8801 }
8802 return PCI_ERS_RESULT_NEED_RESET;
8803 }
8804
8805 /**
8806 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8807 * @ioa_cfg: ioa cfg struct
8808 *
8809 * Description: This is the second phase of adapter intialization
8810 * This function takes care of initilizing the adapter to the point
8811 * where it can accept new commands.
8812
8813 * Return value:
8814 * 0 on success / -EIO on failure
8815 **/
8816 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8817 {
8818 int rc = 0;
8819 unsigned long host_lock_flags = 0;
8820
8821 ENTER;
8822 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8823 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8824 ioa_cfg->probe_done = 1;
8825 if (ioa_cfg->needs_hard_reset) {
8826 ioa_cfg->needs_hard_reset = 0;
8827 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8828 } else
8829 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8830 IPR_SHUTDOWN_NONE);
8831 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8832 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8833 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8834
8835 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8836 rc = -EIO;
8837 } else if (ipr_invalid_adapter(ioa_cfg)) {
8838 if (!ipr_testmode)
8839 rc = -EIO;
8840
8841 dev_err(&ioa_cfg->pdev->dev,
8842 "Adapter not supported in this hardware configuration.\n");
8843 }
8844
8845 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8846
8847 LEAVE;
8848 return rc;
8849 }
8850
8851 /**
8852 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8853 * @ioa_cfg: ioa config struct
8854 *
8855 * Return value:
8856 * none
8857 **/
8858 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8859 {
8860 int i;
8861
8862 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8863 if (ioa_cfg->ipr_cmnd_list[i])
8864 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8865 ioa_cfg->ipr_cmnd_list[i],
8866 ioa_cfg->ipr_cmnd_list_dma[i]);
8867
8868 ioa_cfg->ipr_cmnd_list[i] = NULL;
8869 }
8870
8871 if (ioa_cfg->ipr_cmd_pool)
8872 pci_pool_destroy(ioa_cfg->ipr_cmd_pool);
8873
8874 kfree(ioa_cfg->ipr_cmnd_list);
8875 kfree(ioa_cfg->ipr_cmnd_list_dma);
8876 ioa_cfg->ipr_cmnd_list = NULL;
8877 ioa_cfg->ipr_cmnd_list_dma = NULL;
8878 ioa_cfg->ipr_cmd_pool = NULL;
8879 }
8880
8881 /**
8882 * ipr_free_mem - Frees memory allocated for an adapter
8883 * @ioa_cfg: ioa cfg struct
8884 *
8885 * Return value:
8886 * nothing
8887 **/
8888 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8889 {
8890 int i;
8891
8892 kfree(ioa_cfg->res_entries);
8893 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8894 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8895 ipr_free_cmd_blks(ioa_cfg);
8896
8897 for (i = 0; i < ioa_cfg->hrrq_num; i++)
8898 pci_free_consistent(ioa_cfg->pdev,
8899 sizeof(u32) * ioa_cfg->hrrq[i].size,
8900 ioa_cfg->hrrq[i].host_rrq,
8901 ioa_cfg->hrrq[i].host_rrq_dma);
8902
8903 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8904 ioa_cfg->u.cfg_table,
8905 ioa_cfg->cfg_table_dma);
8906
8907 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8908 pci_free_consistent(ioa_cfg->pdev,
8909 sizeof(struct ipr_hostrcb),
8910 ioa_cfg->hostrcb[i],
8911 ioa_cfg->hostrcb_dma[i]);
8912 }
8913
8914 ipr_free_dump(ioa_cfg);
8915 kfree(ioa_cfg->trace);
8916 }
8917
8918 /**
8919 * ipr_free_all_resources - Free all allocated resources for an adapter.
8920 * @ipr_cmd: ipr command struct
8921 *
8922 * This function frees all allocated resources for the
8923 * specified adapter.
8924 *
8925 * Return value:
8926 * none
8927 **/
8928 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8929 {
8930 struct pci_dev *pdev = ioa_cfg->pdev;
8931
8932 ENTER;
8933 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
8934 ioa_cfg->intr_flag == IPR_USE_MSIX) {
8935 int i;
8936 for (i = 0; i < ioa_cfg->nvectors; i++)
8937 free_irq(ioa_cfg->vectors_info[i].vec,
8938 &ioa_cfg->hrrq[i]);
8939 } else
8940 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
8941
8942 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
8943 pci_disable_msi(pdev);
8944 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
8945 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
8946 pci_disable_msix(pdev);
8947 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
8948 }
8949
8950 iounmap(ioa_cfg->hdw_dma_regs);
8951 pci_release_regions(pdev);
8952 ipr_free_mem(ioa_cfg);
8953 scsi_host_put(ioa_cfg->host);
8954 pci_disable_device(pdev);
8955 LEAVE;
8956 }
8957
8958 /**
8959 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8960 * @ioa_cfg: ioa config struct
8961 *
8962 * Return value:
8963 * 0 on success / -ENOMEM on allocation failure
8964 **/
8965 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8966 {
8967 struct ipr_cmnd *ipr_cmd;
8968 struct ipr_ioarcb *ioarcb;
8969 dma_addr_t dma_addr;
8970 int i, entries_each_hrrq, hrrq_id = 0;
8971
8972 ioa_cfg->ipr_cmd_pool = pci_pool_create(IPR_NAME, ioa_cfg->pdev,
8973 sizeof(struct ipr_cmnd), 512, 0);
8974
8975 if (!ioa_cfg->ipr_cmd_pool)
8976 return -ENOMEM;
8977
8978 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
8979 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
8980
8981 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
8982 ipr_free_cmd_blks(ioa_cfg);
8983 return -ENOMEM;
8984 }
8985
8986 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8987 if (ioa_cfg->hrrq_num > 1) {
8988 if (i == 0) {
8989 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
8990 ioa_cfg->hrrq[i].min_cmd_id = 0;
8991 ioa_cfg->hrrq[i].max_cmd_id =
8992 (entries_each_hrrq - 1);
8993 } else {
8994 entries_each_hrrq =
8995 IPR_NUM_BASE_CMD_BLKS/
8996 (ioa_cfg->hrrq_num - 1);
8997 ioa_cfg->hrrq[i].min_cmd_id =
8998 IPR_NUM_INTERNAL_CMD_BLKS +
8999 (i - 1) * entries_each_hrrq;
9000 ioa_cfg->hrrq[i].max_cmd_id =
9001 (IPR_NUM_INTERNAL_CMD_BLKS +
9002 i * entries_each_hrrq - 1);
9003 }
9004 } else {
9005 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9006 ioa_cfg->hrrq[i].min_cmd_id = 0;
9007 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9008 }
9009 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9010 }
9011
9012 BUG_ON(ioa_cfg->hrrq_num == 0);
9013
9014 i = IPR_NUM_CMD_BLKS -
9015 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9016 if (i > 0) {
9017 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9018 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9019 }
9020
9021 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9022 ipr_cmd = pci_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9023
9024 if (!ipr_cmd) {
9025 ipr_free_cmd_blks(ioa_cfg);
9026 return -ENOMEM;
9027 }
9028
9029 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9030 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9031 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9032
9033 ioarcb = &ipr_cmd->ioarcb;
9034 ipr_cmd->dma_addr = dma_addr;
9035 if (ioa_cfg->sis64)
9036 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9037 else
9038 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9039
9040 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9041 if (ioa_cfg->sis64) {
9042 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9043 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9044 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9045 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9046 } else {
9047 ioarcb->write_ioadl_addr =
9048 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9049 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9050 ioarcb->ioasa_host_pci_addr =
9051 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9052 }
9053 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9054 ipr_cmd->cmd_index = i;
9055 ipr_cmd->ioa_cfg = ioa_cfg;
9056 ipr_cmd->sense_buffer_dma = dma_addr +
9057 offsetof(struct ipr_cmnd, sense_buffer);
9058
9059 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9060 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9061 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9062 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9063 hrrq_id++;
9064 }
9065
9066 return 0;
9067 }
9068
9069 /**
9070 * ipr_alloc_mem - Allocate memory for an adapter
9071 * @ioa_cfg: ioa config struct
9072 *
9073 * Return value:
9074 * 0 on success / non-zero for error
9075 **/
9076 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9077 {
9078 struct pci_dev *pdev = ioa_cfg->pdev;
9079 int i, rc = -ENOMEM;
9080
9081 ENTER;
9082 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9083 ioa_cfg->max_devs_supported, GFP_KERNEL);
9084
9085 if (!ioa_cfg->res_entries)
9086 goto out;
9087
9088 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9089 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9090 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9091 }
9092
9093 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
9094 sizeof(struct ipr_misc_cbs),
9095 &ioa_cfg->vpd_cbs_dma);
9096
9097 if (!ioa_cfg->vpd_cbs)
9098 goto out_free_res_entries;
9099
9100 if (ipr_alloc_cmd_blks(ioa_cfg))
9101 goto out_free_vpd_cbs;
9102
9103 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9104 ioa_cfg->hrrq[i].host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
9105 sizeof(u32) * ioa_cfg->hrrq[i].size,
9106 &ioa_cfg->hrrq[i].host_rrq_dma);
9107
9108 if (!ioa_cfg->hrrq[i].host_rrq) {
9109 while (--i > 0)
9110 pci_free_consistent(pdev,
9111 sizeof(u32) * ioa_cfg->hrrq[i].size,
9112 ioa_cfg->hrrq[i].host_rrq,
9113 ioa_cfg->hrrq[i].host_rrq_dma);
9114 goto out_ipr_free_cmd_blocks;
9115 }
9116 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9117 }
9118
9119 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
9120 ioa_cfg->cfg_table_size,
9121 &ioa_cfg->cfg_table_dma);
9122
9123 if (!ioa_cfg->u.cfg_table)
9124 goto out_free_host_rrq;
9125
9126 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9127 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
9128 sizeof(struct ipr_hostrcb),
9129 &ioa_cfg->hostrcb_dma[i]);
9130
9131 if (!ioa_cfg->hostrcb[i])
9132 goto out_free_hostrcb_dma;
9133
9134 ioa_cfg->hostrcb[i]->hostrcb_dma =
9135 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9136 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9137 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9138 }
9139
9140 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9141 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9142
9143 if (!ioa_cfg->trace)
9144 goto out_free_hostrcb_dma;
9145
9146 rc = 0;
9147 out:
9148 LEAVE;
9149 return rc;
9150
9151 out_free_hostrcb_dma:
9152 while (i-- > 0) {
9153 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
9154 ioa_cfg->hostrcb[i],
9155 ioa_cfg->hostrcb_dma[i]);
9156 }
9157 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
9158 ioa_cfg->u.cfg_table,
9159 ioa_cfg->cfg_table_dma);
9160 out_free_host_rrq:
9161 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9162 pci_free_consistent(pdev,
9163 sizeof(u32) * ioa_cfg->hrrq[i].size,
9164 ioa_cfg->hrrq[i].host_rrq,
9165 ioa_cfg->hrrq[i].host_rrq_dma);
9166 }
9167 out_ipr_free_cmd_blocks:
9168 ipr_free_cmd_blks(ioa_cfg);
9169 out_free_vpd_cbs:
9170 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
9171 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9172 out_free_res_entries:
9173 kfree(ioa_cfg->res_entries);
9174 goto out;
9175 }
9176
9177 /**
9178 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9179 * @ioa_cfg: ioa config struct
9180 *
9181 * Return value:
9182 * none
9183 **/
9184 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9185 {
9186 int i;
9187
9188 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9189 ioa_cfg->bus_attr[i].bus = i;
9190 ioa_cfg->bus_attr[i].qas_enabled = 0;
9191 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9192 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9193 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9194 else
9195 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9196 }
9197 }
9198
9199 /**
9200 * ipr_init_regs - Initialize IOA registers
9201 * @ioa_cfg: ioa config struct
9202 *
9203 * Return value:
9204 * none
9205 **/
9206 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9207 {
9208 const struct ipr_interrupt_offsets *p;
9209 struct ipr_interrupts *t;
9210 void __iomem *base;
9211
9212 p = &ioa_cfg->chip_cfg->regs;
9213 t = &ioa_cfg->regs;
9214 base = ioa_cfg->hdw_dma_regs;
9215
9216 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9217 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9218 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9219 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9220 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9221 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9222 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9223 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9224 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9225 t->ioarrin_reg = base + p->ioarrin_reg;
9226 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9227 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9228 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9229 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9230 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9231 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9232
9233 if (ioa_cfg->sis64) {
9234 t->init_feedback_reg = base + p->init_feedback_reg;
9235 t->dump_addr_reg = base + p->dump_addr_reg;
9236 t->dump_data_reg = base + p->dump_data_reg;
9237 t->endian_swap_reg = base + p->endian_swap_reg;
9238 }
9239 }
9240
9241 /**
9242 * ipr_init_ioa_cfg - Initialize IOA config struct
9243 * @ioa_cfg: ioa config struct
9244 * @host: scsi host struct
9245 * @pdev: PCI dev struct
9246 *
9247 * Return value:
9248 * none
9249 **/
9250 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9251 struct Scsi_Host *host, struct pci_dev *pdev)
9252 {
9253 int i;
9254
9255 ioa_cfg->host = host;
9256 ioa_cfg->pdev = pdev;
9257 ioa_cfg->log_level = ipr_log_level;
9258 ioa_cfg->doorbell = IPR_DOORBELL;
9259 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9260 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9261 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9262 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9263 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9264 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9265
9266 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9267 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9268 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9269 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9270 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9271 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9272 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9273 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9274 ioa_cfg->sdt_state = INACTIVE;
9275
9276 ipr_initialize_bus_attr(ioa_cfg);
9277 ioa_cfg->max_devs_supported = ipr_max_devs;
9278
9279 if (ioa_cfg->sis64) {
9280 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9281 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9282 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9283 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9284 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9285 + ((sizeof(struct ipr_config_table_entry64)
9286 * ioa_cfg->max_devs_supported)));
9287 } else {
9288 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9289 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9290 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9291 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9292 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9293 + ((sizeof(struct ipr_config_table_entry)
9294 * ioa_cfg->max_devs_supported)));
9295 }
9296
9297 host->max_channel = IPR_MAX_BUS_TO_SCAN;
9298 host->unique_id = host->host_no;
9299 host->max_cmd_len = IPR_MAX_CDB_LEN;
9300 host->can_queue = ioa_cfg->max_cmds;
9301 pci_set_drvdata(pdev, ioa_cfg);
9302
9303 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9304 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9305 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9306 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9307 if (i == 0)
9308 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9309 else
9310 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9311 }
9312 }
9313
9314 /**
9315 * ipr_get_chip_info - Find adapter chip information
9316 * @dev_id: PCI device id struct
9317 *
9318 * Return value:
9319 * ptr to chip information on success / NULL on failure
9320 **/
9321 static const struct ipr_chip_t *
9322 ipr_get_chip_info(const struct pci_device_id *dev_id)
9323 {
9324 int i;
9325
9326 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9327 if (ipr_chip[i].vendor == dev_id->vendor &&
9328 ipr_chip[i].device == dev_id->device)
9329 return &ipr_chip[i];
9330 return NULL;
9331 }
9332
9333 /**
9334 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9335 * during probe time
9336 * @ioa_cfg: ioa config struct
9337 *
9338 * Return value:
9339 * None
9340 **/
9341 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9342 {
9343 struct pci_dev *pdev = ioa_cfg->pdev;
9344
9345 if (pci_channel_offline(pdev)) {
9346 wait_event_timeout(ioa_cfg->eeh_wait_q,
9347 !pci_channel_offline(pdev),
9348 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9349 pci_restore_state(pdev);
9350 }
9351 }
9352
9353 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9354 {
9355 struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9356 int i, vectors;
9357
9358 for (i = 0; i < ARRAY_SIZE(entries); ++i)
9359 entries[i].entry = i;
9360
9361 vectors = pci_enable_msix_range(ioa_cfg->pdev,
9362 entries, 1, ipr_number_of_msix);
9363 if (vectors < 0) {
9364 ipr_wait_for_pci_err_recovery(ioa_cfg);
9365 return vectors;
9366 }
9367
9368 for (i = 0; i < vectors; i++)
9369 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9370 ioa_cfg->nvectors = vectors;
9371
9372 return 0;
9373 }
9374
9375 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9376 {
9377 int i, vectors;
9378
9379 vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9380 if (vectors < 0) {
9381 ipr_wait_for_pci_err_recovery(ioa_cfg);
9382 return vectors;
9383 }
9384
9385 for (i = 0; i < vectors; i++)
9386 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9387 ioa_cfg->nvectors = vectors;
9388
9389 return 0;
9390 }
9391
9392 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9393 {
9394 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9395
9396 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9397 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9398 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9399 ioa_cfg->vectors_info[vec_idx].
9400 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9401 }
9402 }
9403
9404 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9405 {
9406 int i, rc;
9407
9408 for (i = 1; i < ioa_cfg->nvectors; i++) {
9409 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9410 ipr_isr_mhrrq,
9411 0,
9412 ioa_cfg->vectors_info[i].desc,
9413 &ioa_cfg->hrrq[i]);
9414 if (rc) {
9415 while (--i >= 0)
9416 free_irq(ioa_cfg->vectors_info[i].vec,
9417 &ioa_cfg->hrrq[i]);
9418 return rc;
9419 }
9420 }
9421 return 0;
9422 }
9423
9424 /**
9425 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9426 * @pdev: PCI device struct
9427 *
9428 * Description: Simply set the msi_received flag to 1 indicating that
9429 * Message Signaled Interrupts are supported.
9430 *
9431 * Return value:
9432 * 0 on success / non-zero on failure
9433 **/
9434 static irqreturn_t ipr_test_intr(int irq, void *devp)
9435 {
9436 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9437 unsigned long lock_flags = 0;
9438 irqreturn_t rc = IRQ_HANDLED;
9439
9440 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9441 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9442
9443 ioa_cfg->msi_received = 1;
9444 wake_up(&ioa_cfg->msi_wait_q);
9445
9446 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9447 return rc;
9448 }
9449
9450 /**
9451 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9452 * @pdev: PCI device struct
9453 *
9454 * Description: The return value from pci_enable_msi_range() can not always be
9455 * trusted. This routine sets up and initiates a test interrupt to determine
9456 * if the interrupt is received via the ipr_test_intr() service routine.
9457 * If the tests fails, the driver will fall back to LSI.
9458 *
9459 * Return value:
9460 * 0 on success / non-zero on failure
9461 **/
9462 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9463 {
9464 int rc;
9465 volatile u32 int_reg;
9466 unsigned long lock_flags = 0;
9467
9468 ENTER;
9469
9470 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9471 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9472 ioa_cfg->msi_received = 0;
9473 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9474 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9475 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9476 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9477
9478 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9479 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9480 else
9481 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9482 if (rc) {
9483 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9484 return rc;
9485 } else if (ipr_debug)
9486 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9487
9488 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9489 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9490 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9491 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9492 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9493
9494 if (!ioa_cfg->msi_received) {
9495 /* MSI test failed */
9496 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9497 rc = -EOPNOTSUPP;
9498 } else if (ipr_debug)
9499 dev_info(&pdev->dev, "MSI test succeeded.\n");
9500
9501 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9502
9503 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9504 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9505 else
9506 free_irq(pdev->irq, ioa_cfg);
9507
9508 LEAVE;
9509
9510 return rc;
9511 }
9512
9513 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9514 * @pdev: PCI device struct
9515 * @dev_id: PCI device id struct
9516 *
9517 * Return value:
9518 * 0 on success / non-zero on failure
9519 **/
9520 static int ipr_probe_ioa(struct pci_dev *pdev,
9521 const struct pci_device_id *dev_id)
9522 {
9523 struct ipr_ioa_cfg *ioa_cfg;
9524 struct Scsi_Host *host;
9525 unsigned long ipr_regs_pci;
9526 void __iomem *ipr_regs;
9527 int rc = PCIBIOS_SUCCESSFUL;
9528 volatile u32 mask, uproc, interrupts;
9529 unsigned long lock_flags, driver_lock_flags;
9530
9531 ENTER;
9532
9533 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9534 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9535
9536 if (!host) {
9537 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9538 rc = -ENOMEM;
9539 goto out;
9540 }
9541
9542 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9543 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9544 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9545
9546 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9547
9548 if (!ioa_cfg->ipr_chip) {
9549 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9550 dev_id->vendor, dev_id->device);
9551 goto out_scsi_host_put;
9552 }
9553
9554 /* set SIS 32 or SIS 64 */
9555 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9556 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
9557 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
9558 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
9559
9560 if (ipr_transop_timeout)
9561 ioa_cfg->transop_timeout = ipr_transop_timeout;
9562 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
9563 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
9564 else
9565 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
9566
9567 ioa_cfg->revid = pdev->revision;
9568
9569 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
9570
9571 ipr_regs_pci = pci_resource_start(pdev, 0);
9572
9573 rc = pci_request_regions(pdev, IPR_NAME);
9574 if (rc < 0) {
9575 dev_err(&pdev->dev,
9576 "Couldn't register memory range of registers\n");
9577 goto out_scsi_host_put;
9578 }
9579
9580 rc = pci_enable_device(pdev);
9581
9582 if (rc || pci_channel_offline(pdev)) {
9583 if (pci_channel_offline(pdev)) {
9584 ipr_wait_for_pci_err_recovery(ioa_cfg);
9585 rc = pci_enable_device(pdev);
9586 }
9587
9588 if (rc) {
9589 dev_err(&pdev->dev, "Cannot enable adapter\n");
9590 ipr_wait_for_pci_err_recovery(ioa_cfg);
9591 goto out_release_regions;
9592 }
9593 }
9594
9595 ipr_regs = pci_ioremap_bar(pdev, 0);
9596
9597 if (!ipr_regs) {
9598 dev_err(&pdev->dev,
9599 "Couldn't map memory range of registers\n");
9600 rc = -ENOMEM;
9601 goto out_disable;
9602 }
9603
9604 ioa_cfg->hdw_dma_regs = ipr_regs;
9605 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
9606 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
9607
9608 ipr_init_regs(ioa_cfg);
9609
9610 if (ioa_cfg->sis64) {
9611 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
9612 if (rc < 0) {
9613 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
9614 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9615 }
9616 } else
9617 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9618
9619 if (rc < 0) {
9620 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
9621 goto cleanup_nomem;
9622 }
9623
9624 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
9625 ioa_cfg->chip_cfg->cache_line_size);
9626
9627 if (rc != PCIBIOS_SUCCESSFUL) {
9628 dev_err(&pdev->dev, "Write of cache line size failed\n");
9629 ipr_wait_for_pci_err_recovery(ioa_cfg);
9630 rc = -EIO;
9631 goto cleanup_nomem;
9632 }
9633
9634 /* Issue MMIO read to ensure card is not in EEH */
9635 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
9636 ipr_wait_for_pci_err_recovery(ioa_cfg);
9637
9638 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
9639 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
9640 IPR_MAX_MSIX_VECTORS);
9641 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
9642 }
9643
9644 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
9645 ipr_enable_msix(ioa_cfg) == 0)
9646 ioa_cfg->intr_flag = IPR_USE_MSIX;
9647 else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
9648 ipr_enable_msi(ioa_cfg) == 0)
9649 ioa_cfg->intr_flag = IPR_USE_MSI;
9650 else {
9651 ioa_cfg->intr_flag = IPR_USE_LSI;
9652 ioa_cfg->nvectors = 1;
9653 dev_info(&pdev->dev, "Cannot enable MSI.\n");
9654 }
9655
9656 pci_set_master(pdev);
9657
9658 if (pci_channel_offline(pdev)) {
9659 ipr_wait_for_pci_err_recovery(ioa_cfg);
9660 pci_set_master(pdev);
9661 if (pci_channel_offline(pdev)) {
9662 rc = -EIO;
9663 goto out_msi_disable;
9664 }
9665 }
9666
9667 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9668 ioa_cfg->intr_flag == IPR_USE_MSIX) {
9669 rc = ipr_test_msi(ioa_cfg, pdev);
9670 if (rc == -EOPNOTSUPP) {
9671 ipr_wait_for_pci_err_recovery(ioa_cfg);
9672 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9673 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9674 pci_disable_msi(pdev);
9675 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9676 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9677 pci_disable_msix(pdev);
9678 }
9679
9680 ioa_cfg->intr_flag = IPR_USE_LSI;
9681 ioa_cfg->nvectors = 1;
9682 }
9683 else if (rc)
9684 goto out_msi_disable;
9685 else {
9686 if (ioa_cfg->intr_flag == IPR_USE_MSI)
9687 dev_info(&pdev->dev,
9688 "Request for %d MSIs succeeded with starting IRQ: %d\n",
9689 ioa_cfg->nvectors, pdev->irq);
9690 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9691 dev_info(&pdev->dev,
9692 "Request for %d MSIXs succeeded.",
9693 ioa_cfg->nvectors);
9694 }
9695 }
9696
9697 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
9698 (unsigned int)num_online_cpus(),
9699 (unsigned int)IPR_MAX_HRRQ_NUM);
9700
9701 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
9702 goto out_msi_disable;
9703
9704 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
9705 goto out_msi_disable;
9706
9707 rc = ipr_alloc_mem(ioa_cfg);
9708 if (rc < 0) {
9709 dev_err(&pdev->dev,
9710 "Couldn't allocate enough memory for device driver!\n");
9711 goto out_msi_disable;
9712 }
9713
9714 /* Save away PCI config space for use following IOA reset */
9715 rc = pci_save_state(pdev);
9716
9717 if (rc != PCIBIOS_SUCCESSFUL) {
9718 dev_err(&pdev->dev, "Failed to save PCI config space\n");
9719 rc = -EIO;
9720 goto cleanup_nolog;
9721 }
9722
9723 /*
9724 * If HRRQ updated interrupt is not masked, or reset alert is set,
9725 * the card is in an unknown state and needs a hard reset
9726 */
9727 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
9728 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
9729 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
9730 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
9731 ioa_cfg->needs_hard_reset = 1;
9732 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
9733 ioa_cfg->needs_hard_reset = 1;
9734 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
9735 ioa_cfg->ioa_unit_checked = 1;
9736
9737 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9738 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9739 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9740
9741 if (ioa_cfg->intr_flag == IPR_USE_MSI
9742 || ioa_cfg->intr_flag == IPR_USE_MSIX) {
9743 name_msi_vectors(ioa_cfg);
9744 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
9745 0,
9746 ioa_cfg->vectors_info[0].desc,
9747 &ioa_cfg->hrrq[0]);
9748 if (!rc)
9749 rc = ipr_request_other_msi_irqs(ioa_cfg);
9750 } else {
9751 rc = request_irq(pdev->irq, ipr_isr,
9752 IRQF_SHARED,
9753 IPR_NAME, &ioa_cfg->hrrq[0]);
9754 }
9755 if (rc) {
9756 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
9757 pdev->irq, rc);
9758 goto cleanup_nolog;
9759 }
9760
9761 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
9762 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
9763 ioa_cfg->needs_warm_reset = 1;
9764 ioa_cfg->reset = ipr_reset_slot_reset;
9765 } else
9766 ioa_cfg->reset = ipr_reset_start_bist;
9767
9768 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
9769 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
9770 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
9771
9772 LEAVE;
9773 out:
9774 return rc;
9775
9776 cleanup_nolog:
9777 ipr_free_mem(ioa_cfg);
9778 out_msi_disable:
9779 ipr_wait_for_pci_err_recovery(ioa_cfg);
9780 if (ioa_cfg->intr_flag == IPR_USE_MSI)
9781 pci_disable_msi(pdev);
9782 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9783 pci_disable_msix(pdev);
9784 cleanup_nomem:
9785 iounmap(ipr_regs);
9786 out_disable:
9787 pci_disable_device(pdev);
9788 out_release_regions:
9789 pci_release_regions(pdev);
9790 out_scsi_host_put:
9791 scsi_host_put(host);
9792 goto out;
9793 }
9794
9795 /**
9796 * ipr_scan_vsets - Scans for VSET devices
9797 * @ioa_cfg: ioa config struct
9798 *
9799 * Description: Since the VSET resources do not follow SAM in that we can have
9800 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
9801 *
9802 * Return value:
9803 * none
9804 **/
9805 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
9806 {
9807 int target, lun;
9808
9809 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
9810 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++)
9811 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
9812 }
9813
9814 /**
9815 * ipr_initiate_ioa_bringdown - Bring down an adapter
9816 * @ioa_cfg: ioa config struct
9817 * @shutdown_type: shutdown type
9818 *
9819 * Description: This function will initiate bringing down the adapter.
9820 * This consists of issuing an IOA shutdown to the adapter
9821 * to flush the cache, and running BIST.
9822 * If the caller needs to wait on the completion of the reset,
9823 * the caller must sleep on the reset_wait_q.
9824 *
9825 * Return value:
9826 * none
9827 **/
9828 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
9829 enum ipr_shutdown_type shutdown_type)
9830 {
9831 ENTER;
9832 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9833 ioa_cfg->sdt_state = ABORT_DUMP;
9834 ioa_cfg->reset_retries = 0;
9835 ioa_cfg->in_ioa_bringdown = 1;
9836 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
9837 LEAVE;
9838 }
9839
9840 /**
9841 * __ipr_remove - Remove a single adapter
9842 * @pdev: pci device struct
9843 *
9844 * Adapter hot plug remove entry point.
9845 *
9846 * Return value:
9847 * none
9848 **/
9849 static void __ipr_remove(struct pci_dev *pdev)
9850 {
9851 unsigned long host_lock_flags = 0;
9852 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9853 int i;
9854 unsigned long driver_lock_flags;
9855 ENTER;
9856
9857 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9858 while (ioa_cfg->in_reset_reload) {
9859 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9860 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9861 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9862 }
9863
9864 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9865 spin_lock(&ioa_cfg->hrrq[i]._lock);
9866 ioa_cfg->hrrq[i].removing_ioa = 1;
9867 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9868 }
9869 wmb();
9870 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9871
9872 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9873 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9874 flush_work(&ioa_cfg->work_q);
9875 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9876 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9877
9878 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
9879 list_del(&ioa_cfg->queue);
9880 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
9881
9882 if (ioa_cfg->sdt_state == ABORT_DUMP)
9883 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9884 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9885
9886 ipr_free_all_resources(ioa_cfg);
9887
9888 LEAVE;
9889 }
9890
9891 /**
9892 * ipr_remove - IOA hot plug remove entry point
9893 * @pdev: pci device struct
9894 *
9895 * Adapter hot plug remove entry point.
9896 *
9897 * Return value:
9898 * none
9899 **/
9900 static void ipr_remove(struct pci_dev *pdev)
9901 {
9902 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9903
9904 ENTER;
9905
9906 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9907 &ipr_trace_attr);
9908 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
9909 &ipr_dump_attr);
9910 scsi_remove_host(ioa_cfg->host);
9911
9912 __ipr_remove(pdev);
9913
9914 LEAVE;
9915 }
9916
9917 /**
9918 * ipr_probe - Adapter hot plug add entry point
9919 *
9920 * Return value:
9921 * 0 on success / non-zero on failure
9922 **/
9923 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
9924 {
9925 struct ipr_ioa_cfg *ioa_cfg;
9926 int rc, i;
9927
9928 rc = ipr_probe_ioa(pdev, dev_id);
9929
9930 if (rc)
9931 return rc;
9932
9933 ioa_cfg = pci_get_drvdata(pdev);
9934 rc = ipr_probe_ioa_part2(ioa_cfg);
9935
9936 if (rc) {
9937 __ipr_remove(pdev);
9938 return rc;
9939 }
9940
9941 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
9942
9943 if (rc) {
9944 __ipr_remove(pdev);
9945 return rc;
9946 }
9947
9948 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
9949 &ipr_trace_attr);
9950
9951 if (rc) {
9952 scsi_remove_host(ioa_cfg->host);
9953 __ipr_remove(pdev);
9954 return rc;
9955 }
9956
9957 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
9958 &ipr_dump_attr);
9959
9960 if (rc) {
9961 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9962 &ipr_trace_attr);
9963 scsi_remove_host(ioa_cfg->host);
9964 __ipr_remove(pdev);
9965 return rc;
9966 }
9967
9968 scsi_scan_host(ioa_cfg->host);
9969 ipr_scan_vsets(ioa_cfg);
9970 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
9971 ioa_cfg->allow_ml_add_del = 1;
9972 ioa_cfg->host->max_channel = IPR_VSET_BUS;
9973 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
9974
9975 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
9976 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
9977 blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
9978 ioa_cfg->iopoll_weight, ipr_iopoll);
9979 blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
9980 }
9981 }
9982
9983 schedule_work(&ioa_cfg->work_q);
9984 return 0;
9985 }
9986
9987 /**
9988 * ipr_shutdown - Shutdown handler.
9989 * @pdev: pci device struct
9990 *
9991 * This function is invoked upon system shutdown/reboot. It will issue
9992 * an adapter shutdown to the adapter to flush the write cache.
9993 *
9994 * Return value:
9995 * none
9996 **/
9997 static void ipr_shutdown(struct pci_dev *pdev)
9998 {
9999 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10000 unsigned long lock_flags = 0;
10001 int i;
10002
10003 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10004 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10005 ioa_cfg->iopoll_weight = 0;
10006 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10007 blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
10008 }
10009
10010 while (ioa_cfg->in_reset_reload) {
10011 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10012 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10013 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10014 }
10015
10016 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10018 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10019 }
10020
10021 static struct pci_device_id ipr_pci_table[] = {
10022 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10023 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10024 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10025 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10026 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10027 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10028 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10029 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10030 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10031 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10032 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10033 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10034 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10035 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10036 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10037 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10038 IPR_USE_LONG_TRANSOP_TIMEOUT },
10039 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10040 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10041 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10042 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10043 IPR_USE_LONG_TRANSOP_TIMEOUT },
10044 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10045 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10046 IPR_USE_LONG_TRANSOP_TIMEOUT },
10047 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10048 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10049 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10050 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10051 IPR_USE_LONG_TRANSOP_TIMEOUT},
10052 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10053 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10054 IPR_USE_LONG_TRANSOP_TIMEOUT },
10055 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10056 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10057 IPR_USE_LONG_TRANSOP_TIMEOUT },
10058 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10059 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10060 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10061 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10062 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10063 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10064 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10065 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10066 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10067 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10068 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10069 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10070 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10071 IPR_USE_LONG_TRANSOP_TIMEOUT },
10072 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10073 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10074 IPR_USE_LONG_TRANSOP_TIMEOUT },
10075 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10076 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10077 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10078 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10079 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10080 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10081 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10082 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10083 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10084 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10085 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10086 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10087 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10088 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10089 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10090 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10091 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10092 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10093 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10094 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10095 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10096 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10097 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10098 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10099 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10100 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10101 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10102 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10103 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10104 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10105 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10106 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10107 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10108 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10109 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10110 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10111 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10112 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10113 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10114 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10115 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10116 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10117 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10118 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10119 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10120 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10121 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10122 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10123 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10124 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10125 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10126 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10127 { }
10128 };
10129 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10130
10131 static const struct pci_error_handlers ipr_err_handler = {
10132 .error_detected = ipr_pci_error_detected,
10133 .mmio_enabled = ipr_pci_mmio_enabled,
10134 .slot_reset = ipr_pci_slot_reset,
10135 };
10136
10137 static struct pci_driver ipr_driver = {
10138 .name = IPR_NAME,
10139 .id_table = ipr_pci_table,
10140 .probe = ipr_probe,
10141 .remove = ipr_remove,
10142 .shutdown = ipr_shutdown,
10143 .err_handler = &ipr_err_handler,
10144 };
10145
10146 /**
10147 * ipr_halt_done - Shutdown prepare completion
10148 *
10149 * Return value:
10150 * none
10151 **/
10152 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10153 {
10154 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10155 }
10156
10157 /**
10158 * ipr_halt - Issue shutdown prepare to all adapters
10159 *
10160 * Return value:
10161 * NOTIFY_OK on success / NOTIFY_DONE on failure
10162 **/
10163 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10164 {
10165 struct ipr_cmnd *ipr_cmd;
10166 struct ipr_ioa_cfg *ioa_cfg;
10167 unsigned long flags = 0, driver_lock_flags;
10168
10169 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10170 return NOTIFY_DONE;
10171
10172 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10173
10174 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10175 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10176 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
10177 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10178 continue;
10179 }
10180
10181 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10182 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10183 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10184 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10185 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10186
10187 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10188 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10189 }
10190 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10191
10192 return NOTIFY_OK;
10193 }
10194
10195 static struct notifier_block ipr_notifier = {
10196 ipr_halt, NULL, 0
10197 };
10198
10199 /**
10200 * ipr_init - Module entry point
10201 *
10202 * Return value:
10203 * 0 on success / negative value on failure
10204 **/
10205 static int __init ipr_init(void)
10206 {
10207 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10208 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10209
10210 register_reboot_notifier(&ipr_notifier);
10211 return pci_register_driver(&ipr_driver);
10212 }
10213
10214 /**
10215 * ipr_exit - Module unload
10216 *
10217 * Module unload entry point.
10218 *
10219 * Return value:
10220 * none
10221 **/
10222 static void __exit ipr_exit(void)
10223 {
10224 unregister_reboot_notifier(&ipr_notifier);
10225 pci_unregister_driver(&ipr_driver);
10226 }
10227
10228 module_init(ipr_init);
10229 module_exit(ipr_exit);
Linux with added FPC-III support