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Merge tag 'pm+acpi-4.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
[deliverable/linux.git] / drivers / scsi / ipr.c
1 /*
2 * ipr.c -- driver for IBM Power Linux RAID adapters
3 *
4 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
5 *
6 * Copyright (C) 2003, 2004 IBM Corporation
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24 /*
25 * Notes:
26 *
27 * This driver is used to control the following SCSI adapters:
28 *
29 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
30 *
31 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
32 * PCI-X Dual Channel Ultra 320 SCSI Adapter
33 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
34 * Embedded SCSI adapter on p615 and p655 systems
35 *
36 * Supported Hardware Features:
37 * - Ultra 320 SCSI controller
38 * - PCI-X host interface
39 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
40 * - Non-Volatile Write Cache
41 * - Supports attachment of non-RAID disks, tape, and optical devices
42 * - RAID Levels 0, 5, 10
43 * - Hot spare
44 * - Background Parity Checking
45 * - Background Data Scrubbing
46 * - Ability to increase the capacity of an existing RAID 5 disk array
47 * by adding disks
48 *
49 * Driver Features:
50 * - Tagged command queuing
51 * - Adapter microcode download
52 * - PCI hot plug
53 * - SCSI device hot plug
54 *
55 */
56
57 #include <linux/fs.h>
58 #include <linux/init.h>
59 #include <linux/types.h>
60 #include <linux/errno.h>
61 #include <linux/kernel.h>
62 #include <linux/slab.h>
63 #include <linux/vmalloc.h>
64 #include <linux/ioport.h>
65 #include <linux/delay.h>
66 #include <linux/pci.h>
67 #include <linux/wait.h>
68 #include <linux/spinlock.h>
69 #include <linux/sched.h>
70 #include <linux/interrupt.h>
71 #include <linux/blkdev.h>
72 #include <linux/firmware.h>
73 #include <linux/module.h>
74 #include <linux/moduleparam.h>
75 #include <linux/libata.h>
76 #include <linux/hdreg.h>
77 #include <linux/reboot.h>
78 #include <linux/stringify.h>
79 #include <asm/io.h>
80 #include <asm/irq.h>
81 #include <asm/processor.h>
82 #include <scsi/scsi.h>
83 #include <scsi/scsi_host.h>
84 #include <scsi/scsi_tcq.h>
85 #include <scsi/scsi_eh.h>
86 #include <scsi/scsi_cmnd.h>
87 #include "ipr.h"
88
89 /*
90 * Global Data
91 */
92 static LIST_HEAD(ipr_ioa_head);
93 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
94 static unsigned int ipr_max_speed = 1;
95 static int ipr_testmode = 0;
96 static unsigned int ipr_fastfail = 0;
97 static unsigned int ipr_transop_timeout = 0;
98 static unsigned int ipr_debug = 0;
99 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
100 static unsigned int ipr_dual_ioa_raid = 1;
101 static unsigned int ipr_number_of_msix = 2;
102 static unsigned int ipr_fast_reboot;
103 static DEFINE_SPINLOCK(ipr_driver_lock);
104
105 /* This table describes the differences between DMA controller chips */
106 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
107 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
108 .mailbox = 0x0042C,
109 .max_cmds = 100,
110 .cache_line_size = 0x20,
111 .clear_isr = 1,
112 .iopoll_weight = 0,
113 {
114 .set_interrupt_mask_reg = 0x0022C,
115 .clr_interrupt_mask_reg = 0x00230,
116 .clr_interrupt_mask_reg32 = 0x00230,
117 .sense_interrupt_mask_reg = 0x0022C,
118 .sense_interrupt_mask_reg32 = 0x0022C,
119 .clr_interrupt_reg = 0x00228,
120 .clr_interrupt_reg32 = 0x00228,
121 .sense_interrupt_reg = 0x00224,
122 .sense_interrupt_reg32 = 0x00224,
123 .ioarrin_reg = 0x00404,
124 .sense_uproc_interrupt_reg = 0x00214,
125 .sense_uproc_interrupt_reg32 = 0x00214,
126 .set_uproc_interrupt_reg = 0x00214,
127 .set_uproc_interrupt_reg32 = 0x00214,
128 .clr_uproc_interrupt_reg = 0x00218,
129 .clr_uproc_interrupt_reg32 = 0x00218
130 }
131 },
132 { /* Snipe and Scamp */
133 .mailbox = 0x0052C,
134 .max_cmds = 100,
135 .cache_line_size = 0x20,
136 .clear_isr = 1,
137 .iopoll_weight = 0,
138 {
139 .set_interrupt_mask_reg = 0x00288,
140 .clr_interrupt_mask_reg = 0x0028C,
141 .clr_interrupt_mask_reg32 = 0x0028C,
142 .sense_interrupt_mask_reg = 0x00288,
143 .sense_interrupt_mask_reg32 = 0x00288,
144 .clr_interrupt_reg = 0x00284,
145 .clr_interrupt_reg32 = 0x00284,
146 .sense_interrupt_reg = 0x00280,
147 .sense_interrupt_reg32 = 0x00280,
148 .ioarrin_reg = 0x00504,
149 .sense_uproc_interrupt_reg = 0x00290,
150 .sense_uproc_interrupt_reg32 = 0x00290,
151 .set_uproc_interrupt_reg = 0x00290,
152 .set_uproc_interrupt_reg32 = 0x00290,
153 .clr_uproc_interrupt_reg = 0x00294,
154 .clr_uproc_interrupt_reg32 = 0x00294
155 }
156 },
157 { /* CRoC */
158 .mailbox = 0x00044,
159 .max_cmds = 1000,
160 .cache_line_size = 0x20,
161 .clear_isr = 0,
162 .iopoll_weight = 64,
163 {
164 .set_interrupt_mask_reg = 0x00010,
165 .clr_interrupt_mask_reg = 0x00018,
166 .clr_interrupt_mask_reg32 = 0x0001C,
167 .sense_interrupt_mask_reg = 0x00010,
168 .sense_interrupt_mask_reg32 = 0x00014,
169 .clr_interrupt_reg = 0x00008,
170 .clr_interrupt_reg32 = 0x0000C,
171 .sense_interrupt_reg = 0x00000,
172 .sense_interrupt_reg32 = 0x00004,
173 .ioarrin_reg = 0x00070,
174 .sense_uproc_interrupt_reg = 0x00020,
175 .sense_uproc_interrupt_reg32 = 0x00024,
176 .set_uproc_interrupt_reg = 0x00020,
177 .set_uproc_interrupt_reg32 = 0x00024,
178 .clr_uproc_interrupt_reg = 0x00028,
179 .clr_uproc_interrupt_reg32 = 0x0002C,
180 .init_feedback_reg = 0x0005C,
181 .dump_addr_reg = 0x00064,
182 .dump_data_reg = 0x00068,
183 .endian_swap_reg = 0x00084
184 }
185 },
186 };
187
188 static const struct ipr_chip_t ipr_chip[] = {
189 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
190 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
191 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
192 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
193 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, IPR_USE_MSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
194 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
195 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, IPR_USE_LSI, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
196 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
197 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, IPR_USE_MSI, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
198 };
199
200 static int ipr_max_bus_speeds[] = {
201 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
202 };
203
204 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
205 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
206 module_param_named(max_speed, ipr_max_speed, uint, 0);
207 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
208 module_param_named(log_level, ipr_log_level, uint, 0);
209 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
210 module_param_named(testmode, ipr_testmode, int, 0);
211 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
212 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
213 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
214 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
215 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
216 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
217 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
218 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
219 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
220 module_param_named(max_devs, ipr_max_devs, int, 0);
221 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
222 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
223 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
224 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:2)");
225 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
226 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
227 MODULE_LICENSE("GPL");
228 MODULE_VERSION(IPR_DRIVER_VERSION);
229
230 /* A constant array of IOASCs/URCs/Error Messages */
231 static const
232 struct ipr_error_table_t ipr_error_table[] = {
233 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
234 "8155: An unknown error was received"},
235 {0x00330000, 0, 0,
236 "Soft underlength error"},
237 {0x005A0000, 0, 0,
238 "Command to be cancelled not found"},
239 {0x00808000, 0, 0,
240 "Qualified success"},
241 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
242 "FFFE: Soft device bus error recovered by the IOA"},
243 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
244 "4101: Soft device bus fabric error"},
245 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
246 "FFFC: Logical block guard error recovered by the device"},
247 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
248 "FFFC: Logical block reference tag error recovered by the device"},
249 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
250 "4171: Recovered scatter list tag / sequence number error"},
251 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
252 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
253 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
254 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
255 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
256 "FFFD: Recovered logical block reference tag error detected by the IOA"},
257 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
258 "FFFD: Logical block guard error recovered by the IOA"},
259 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
260 "FFF9: Device sector reassign successful"},
261 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
262 "FFF7: Media error recovered by device rewrite procedures"},
263 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
264 "7001: IOA sector reassignment successful"},
265 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
266 "FFF9: Soft media error. Sector reassignment recommended"},
267 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
268 "FFF7: Media error recovered by IOA rewrite procedures"},
269 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
270 "FF3D: Soft PCI bus error recovered by the IOA"},
271 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
272 "FFF6: Device hardware error recovered by the IOA"},
273 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
274 "FFF6: Device hardware error recovered by the device"},
275 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
276 "FF3D: Soft IOA error recovered by the IOA"},
277 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
278 "FFFA: Undefined device response recovered by the IOA"},
279 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
280 "FFF6: Device bus error, message or command phase"},
281 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
282 "FFFE: Task Management Function failed"},
283 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
284 "FFF6: Failure prediction threshold exceeded"},
285 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
286 "8009: Impending cache battery pack failure"},
287 {0x02040100, 0, 0,
288 "Logical Unit in process of becoming ready"},
289 {0x02040200, 0, 0,
290 "Initializing command required"},
291 {0x02040400, 0, 0,
292 "34FF: Disk device format in progress"},
293 {0x02040C00, 0, 0,
294 "Logical unit not accessible, target port in unavailable state"},
295 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
296 "9070: IOA requested reset"},
297 {0x023F0000, 0, 0,
298 "Synchronization required"},
299 {0x02408500, 0, 0,
300 "IOA microcode download required"},
301 {0x02408600, 0, 0,
302 "Device bus connection is prohibited by host"},
303 {0x024E0000, 0, 0,
304 "No ready, IOA shutdown"},
305 {0x025A0000, 0, 0,
306 "Not ready, IOA has been shutdown"},
307 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
308 "3020: Storage subsystem configuration error"},
309 {0x03110B00, 0, 0,
310 "FFF5: Medium error, data unreadable, recommend reassign"},
311 {0x03110C00, 0, 0,
312 "7000: Medium error, data unreadable, do not reassign"},
313 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
314 "FFF3: Disk media format bad"},
315 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
316 "3002: Addressed device failed to respond to selection"},
317 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
318 "3100: Device bus error"},
319 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
320 "3109: IOA timed out a device command"},
321 {0x04088000, 0, 0,
322 "3120: SCSI bus is not operational"},
323 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
324 "4100: Hard device bus fabric error"},
325 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
326 "310C: Logical block guard error detected by the device"},
327 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
328 "310C: Logical block reference tag error detected by the device"},
329 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
330 "4170: Scatter list tag / sequence number error"},
331 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
332 "8150: Logical block CRC error on IOA to Host transfer"},
333 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
334 "4170: Logical block sequence number error on IOA to Host transfer"},
335 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
336 "310D: Logical block reference tag error detected by the IOA"},
337 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
338 "310D: Logical block guard error detected by the IOA"},
339 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
340 "9000: IOA reserved area data check"},
341 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
342 "9001: IOA reserved area invalid data pattern"},
343 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
344 "9002: IOA reserved area LRC error"},
345 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
346 "Hardware Error, IOA metadata access error"},
347 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
348 "102E: Out of alternate sectors for disk storage"},
349 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
350 "FFF4: Data transfer underlength error"},
351 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
352 "FFF4: Data transfer overlength error"},
353 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
354 "3400: Logical unit failure"},
355 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
356 "FFF4: Device microcode is corrupt"},
357 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
358 "8150: PCI bus error"},
359 {0x04430000, 1, 0,
360 "Unsupported device bus message received"},
361 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
362 "FFF4: Disk device problem"},
363 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
364 "8150: Permanent IOA failure"},
365 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
366 "3010: Disk device returned wrong response to IOA"},
367 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
368 "8151: IOA microcode error"},
369 {0x04448500, 0, 0,
370 "Device bus status error"},
371 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
372 "8157: IOA error requiring IOA reset to recover"},
373 {0x04448700, 0, 0,
374 "ATA device status error"},
375 {0x04490000, 0, 0,
376 "Message reject received from the device"},
377 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
378 "8008: A permanent cache battery pack failure occurred"},
379 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
380 "9090: Disk unit has been modified after the last known status"},
381 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
382 "9081: IOA detected device error"},
383 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
384 "9082: IOA detected device error"},
385 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
386 "3110: Device bus error, message or command phase"},
387 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
388 "3110: SAS Command / Task Management Function failed"},
389 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
390 "9091: Incorrect hardware configuration change has been detected"},
391 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
392 "9073: Invalid multi-adapter configuration"},
393 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
394 "4010: Incorrect connection between cascaded expanders"},
395 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
396 "4020: Connections exceed IOA design limits"},
397 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
398 "4030: Incorrect multipath connection"},
399 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
400 "4110: Unsupported enclosure function"},
401 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
402 "4120: SAS cable VPD cannot be read"},
403 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
404 "FFF4: Command to logical unit failed"},
405 {0x05240000, 1, 0,
406 "Illegal request, invalid request type or request packet"},
407 {0x05250000, 0, 0,
408 "Illegal request, invalid resource handle"},
409 {0x05258000, 0, 0,
410 "Illegal request, commands not allowed to this device"},
411 {0x05258100, 0, 0,
412 "Illegal request, command not allowed to a secondary adapter"},
413 {0x05258200, 0, 0,
414 "Illegal request, command not allowed to a non-optimized resource"},
415 {0x05260000, 0, 0,
416 "Illegal request, invalid field in parameter list"},
417 {0x05260100, 0, 0,
418 "Illegal request, parameter not supported"},
419 {0x05260200, 0, 0,
420 "Illegal request, parameter value invalid"},
421 {0x052C0000, 0, 0,
422 "Illegal request, command sequence error"},
423 {0x052C8000, 1, 0,
424 "Illegal request, dual adapter support not enabled"},
425 {0x052C8100, 1, 0,
426 "Illegal request, another cable connector was physically disabled"},
427 {0x054E8000, 1, 0,
428 "Illegal request, inconsistent group id/group count"},
429 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
430 "9031: Array protection temporarily suspended, protection resuming"},
431 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
432 "9040: Array protection temporarily suspended, protection resuming"},
433 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
434 "4080: IOA exceeded maximum operating temperature"},
435 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
436 "4085: Service required"},
437 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
438 "3140: Device bus not ready to ready transition"},
439 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
440 "FFFB: SCSI bus was reset"},
441 {0x06290500, 0, 0,
442 "FFFE: SCSI bus transition to single ended"},
443 {0x06290600, 0, 0,
444 "FFFE: SCSI bus transition to LVD"},
445 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
446 "FFFB: SCSI bus was reset by another initiator"},
447 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
448 "3029: A device replacement has occurred"},
449 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
450 "4102: Device bus fabric performance degradation"},
451 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
452 "9051: IOA cache data exists for a missing or failed device"},
453 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
454 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
455 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
456 "9025: Disk unit is not supported at its physical location"},
457 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
458 "3020: IOA detected a SCSI bus configuration error"},
459 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
460 "3150: SCSI bus configuration error"},
461 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
462 "9074: Asymmetric advanced function disk configuration"},
463 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
464 "4040: Incomplete multipath connection between IOA and enclosure"},
465 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
466 "4041: Incomplete multipath connection between enclosure and device"},
467 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
468 "9075: Incomplete multipath connection between IOA and remote IOA"},
469 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
470 "9076: Configuration error, missing remote IOA"},
471 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
472 "4050: Enclosure does not support a required multipath function"},
473 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
474 "4121: Configuration error, required cable is missing"},
475 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
476 "4122: Cable is not plugged into the correct location on remote IOA"},
477 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
478 "4123: Configuration error, invalid cable vital product data"},
479 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
480 "4124: Configuration error, both cable ends are plugged into the same IOA"},
481 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
482 "4070: Logically bad block written on device"},
483 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
484 "9041: Array protection temporarily suspended"},
485 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
486 "9042: Corrupt array parity detected on specified device"},
487 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
488 "9030: Array no longer protected due to missing or failed disk unit"},
489 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
490 "9071: Link operational transition"},
491 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
492 "9072: Link not operational transition"},
493 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
494 "9032: Array exposed but still protected"},
495 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
496 "70DD: Device forced failed by disrupt device command"},
497 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
498 "4061: Multipath redundancy level got better"},
499 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
500 "4060: Multipath redundancy level got worse"},
501 {0x06808100, 0, IPR_DEFAULT_LOG_LEVEL,
502 "9083: Device raw mode enabled"},
503 {0x06808200, 0, IPR_DEFAULT_LOG_LEVEL,
504 "9084: Device raw mode disabled"},
505 {0x07270000, 0, 0,
506 "Failure due to other device"},
507 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
508 "9008: IOA does not support functions expected by devices"},
509 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
510 "9010: Cache data associated with attached devices cannot be found"},
511 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
512 "9011: Cache data belongs to devices other than those attached"},
513 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
514 "9020: Array missing 2 or more devices with only 1 device present"},
515 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
516 "9021: Array missing 2 or more devices with 2 or more devices present"},
517 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
518 "9022: Exposed array is missing a required device"},
519 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
520 "9023: Array member(s) not at required physical locations"},
521 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
522 "9024: Array not functional due to present hardware configuration"},
523 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
524 "9026: Array not functional due to present hardware configuration"},
525 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
526 "9027: Array is missing a device and parity is out of sync"},
527 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
528 "9028: Maximum number of arrays already exist"},
529 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
530 "9050: Required cache data cannot be located for a disk unit"},
531 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
532 "9052: Cache data exists for a device that has been modified"},
533 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
534 "9054: IOA resources not available due to previous problems"},
535 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
536 "9092: Disk unit requires initialization before use"},
537 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
538 "9029: Incorrect hardware configuration change has been detected"},
539 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
540 "9060: One or more disk pairs are missing from an array"},
541 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
542 "9061: One or more disks are missing from an array"},
543 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
544 "9062: One or more disks are missing from an array"},
545 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
546 "9063: Maximum number of functional arrays has been exceeded"},
547 {0x07279A00, 0, 0,
548 "Data protect, other volume set problem"},
549 {0x0B260000, 0, 0,
550 "Aborted command, invalid descriptor"},
551 {0x0B3F9000, 0, 0,
552 "Target operating conditions have changed, dual adapter takeover"},
553 {0x0B530200, 0, 0,
554 "Aborted command, medium removal prevented"},
555 {0x0B5A0000, 0, 0,
556 "Command terminated by host"},
557 {0x0B5B8000, 0, 0,
558 "Aborted command, command terminated by host"}
559 };
560
561 static const struct ipr_ses_table_entry ipr_ses_table[] = {
562 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
563 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
564 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
565 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
566 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
567 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
568 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
569 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
570 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
571 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
572 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
573 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
574 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
575 };
576
577 /*
578 * Function Prototypes
579 */
580 static int ipr_reset_alert(struct ipr_cmnd *);
581 static void ipr_process_ccn(struct ipr_cmnd *);
582 static void ipr_process_error(struct ipr_cmnd *);
583 static void ipr_reset_ioa_job(struct ipr_cmnd *);
584 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
585 enum ipr_shutdown_type);
586
587 #ifdef CONFIG_SCSI_IPR_TRACE
588 /**
589 * ipr_trc_hook - Add a trace entry to the driver trace
590 * @ipr_cmd: ipr command struct
591 * @type: trace type
592 * @add_data: additional data
593 *
594 * Return value:
595 * none
596 **/
597 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
598 u8 type, u32 add_data)
599 {
600 struct ipr_trace_entry *trace_entry;
601 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
602 unsigned int trace_index;
603
604 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
605 trace_entry = &ioa_cfg->trace[trace_index];
606 trace_entry->time = jiffies;
607 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
608 trace_entry->type = type;
609 if (ipr_cmd->ioa_cfg->sis64)
610 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
611 else
612 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
613 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
614 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
615 trace_entry->u.add_data = add_data;
616 wmb();
617 }
618 #else
619 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
620 #endif
621
622 /**
623 * ipr_lock_and_done - Acquire lock and complete command
624 * @ipr_cmd: ipr command struct
625 *
626 * Return value:
627 * none
628 **/
629 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
630 {
631 unsigned long lock_flags;
632 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
633
634 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
635 ipr_cmd->done(ipr_cmd);
636 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
637 }
638
639 /**
640 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
641 * @ipr_cmd: ipr command struct
642 *
643 * Return value:
644 * none
645 **/
646 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
647 {
648 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
649 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
650 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
651 dma_addr_t dma_addr = ipr_cmd->dma_addr;
652 int hrrq_id;
653
654 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
655 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
656 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
657 ioarcb->data_transfer_length = 0;
658 ioarcb->read_data_transfer_length = 0;
659 ioarcb->ioadl_len = 0;
660 ioarcb->read_ioadl_len = 0;
661
662 if (ipr_cmd->ioa_cfg->sis64) {
663 ioarcb->u.sis64_addr_data.data_ioadl_addr =
664 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
665 ioasa64->u.gata.status = 0;
666 } else {
667 ioarcb->write_ioadl_addr =
668 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
669 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
670 ioasa->u.gata.status = 0;
671 }
672
673 ioasa->hdr.ioasc = 0;
674 ioasa->hdr.residual_data_len = 0;
675 ipr_cmd->scsi_cmd = NULL;
676 ipr_cmd->qc = NULL;
677 ipr_cmd->sense_buffer[0] = 0;
678 ipr_cmd->dma_use_sg = 0;
679 }
680
681 /**
682 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
683 * @ipr_cmd: ipr command struct
684 *
685 * Return value:
686 * none
687 **/
688 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
689 void (*fast_done) (struct ipr_cmnd *))
690 {
691 ipr_reinit_ipr_cmnd(ipr_cmd);
692 ipr_cmd->u.scratch = 0;
693 ipr_cmd->sibling = NULL;
694 ipr_cmd->eh_comp = NULL;
695 ipr_cmd->fast_done = fast_done;
696 init_timer(&ipr_cmd->timer);
697 }
698
699 /**
700 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
701 * @ioa_cfg: ioa config struct
702 *
703 * Return value:
704 * pointer to ipr command struct
705 **/
706 static
707 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
708 {
709 struct ipr_cmnd *ipr_cmd = NULL;
710
711 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
712 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
713 struct ipr_cmnd, queue);
714 list_del(&ipr_cmd->queue);
715 }
716
717
718 return ipr_cmd;
719 }
720
721 /**
722 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
723 * @ioa_cfg: ioa config struct
724 *
725 * Return value:
726 * pointer to ipr command struct
727 **/
728 static
729 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
730 {
731 struct ipr_cmnd *ipr_cmd =
732 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
733 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
734 return ipr_cmd;
735 }
736
737 /**
738 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
739 * @ioa_cfg: ioa config struct
740 * @clr_ints: interrupts to clear
741 *
742 * This function masks all interrupts on the adapter, then clears the
743 * interrupts specified in the mask
744 *
745 * Return value:
746 * none
747 **/
748 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
749 u32 clr_ints)
750 {
751 volatile u32 int_reg;
752 int i;
753
754 /* Stop new interrupts */
755 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
756 spin_lock(&ioa_cfg->hrrq[i]._lock);
757 ioa_cfg->hrrq[i].allow_interrupts = 0;
758 spin_unlock(&ioa_cfg->hrrq[i]._lock);
759 }
760 wmb();
761
762 /* Set interrupt mask to stop all new interrupts */
763 if (ioa_cfg->sis64)
764 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
765 else
766 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
767
768 /* Clear any pending interrupts */
769 if (ioa_cfg->sis64)
770 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
771 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
772 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
773 }
774
775 /**
776 * ipr_save_pcix_cmd_reg - Save PCI-X command register
777 * @ioa_cfg: ioa config struct
778 *
779 * Return value:
780 * 0 on success / -EIO on failure
781 **/
782 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
783 {
784 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
785
786 if (pcix_cmd_reg == 0)
787 return 0;
788
789 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
790 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
791 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
792 return -EIO;
793 }
794
795 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
796 return 0;
797 }
798
799 /**
800 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
801 * @ioa_cfg: ioa config struct
802 *
803 * Return value:
804 * 0 on success / -EIO on failure
805 **/
806 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
807 {
808 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
809
810 if (pcix_cmd_reg) {
811 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
812 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
813 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
814 return -EIO;
815 }
816 }
817
818 return 0;
819 }
820
821 /**
822 * ipr_sata_eh_done - done function for aborted SATA commands
823 * @ipr_cmd: ipr command struct
824 *
825 * This function is invoked for ops generated to SATA
826 * devices which are being aborted.
827 *
828 * Return value:
829 * none
830 **/
831 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
832 {
833 struct ata_queued_cmd *qc = ipr_cmd->qc;
834 struct ipr_sata_port *sata_port = qc->ap->private_data;
835
836 qc->err_mask |= AC_ERR_OTHER;
837 sata_port->ioasa.status |= ATA_BUSY;
838 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
839 ata_qc_complete(qc);
840 }
841
842 /**
843 * ipr_scsi_eh_done - mid-layer done function for aborted ops
844 * @ipr_cmd: ipr command struct
845 *
846 * This function is invoked by the interrupt handler for
847 * ops generated by the SCSI mid-layer which are being aborted.
848 *
849 * Return value:
850 * none
851 **/
852 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
853 {
854 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
855
856 scsi_cmd->result |= (DID_ERROR << 16);
857
858 scsi_dma_unmap(ipr_cmd->scsi_cmd);
859 scsi_cmd->scsi_done(scsi_cmd);
860 if (ipr_cmd->eh_comp)
861 complete(ipr_cmd->eh_comp);
862 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
863 }
864
865 /**
866 * ipr_fail_all_ops - Fails all outstanding ops.
867 * @ioa_cfg: ioa config struct
868 *
869 * This function fails all outstanding ops.
870 *
871 * Return value:
872 * none
873 **/
874 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
875 {
876 struct ipr_cmnd *ipr_cmd, *temp;
877 struct ipr_hrr_queue *hrrq;
878
879 ENTER;
880 for_each_hrrq(hrrq, ioa_cfg) {
881 spin_lock(&hrrq->_lock);
882 list_for_each_entry_safe(ipr_cmd,
883 temp, &hrrq->hrrq_pending_q, queue) {
884 list_del(&ipr_cmd->queue);
885
886 ipr_cmd->s.ioasa.hdr.ioasc =
887 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
888 ipr_cmd->s.ioasa.hdr.ilid =
889 cpu_to_be32(IPR_DRIVER_ILID);
890
891 if (ipr_cmd->scsi_cmd)
892 ipr_cmd->done = ipr_scsi_eh_done;
893 else if (ipr_cmd->qc)
894 ipr_cmd->done = ipr_sata_eh_done;
895
896 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
897 IPR_IOASC_IOA_WAS_RESET);
898 del_timer(&ipr_cmd->timer);
899 ipr_cmd->done(ipr_cmd);
900 }
901 spin_unlock(&hrrq->_lock);
902 }
903 LEAVE;
904 }
905
906 /**
907 * ipr_send_command - Send driver initiated requests.
908 * @ipr_cmd: ipr command struct
909 *
910 * This function sends a command to the adapter using the correct write call.
911 * In the case of sis64, calculate the ioarcb size required. Then or in the
912 * appropriate bits.
913 *
914 * Return value:
915 * none
916 **/
917 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
918 {
919 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
920 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
921
922 if (ioa_cfg->sis64) {
923 /* The default size is 256 bytes */
924 send_dma_addr |= 0x1;
925
926 /* If the number of ioadls * size of ioadl > 128 bytes,
927 then use a 512 byte ioarcb */
928 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
929 send_dma_addr |= 0x4;
930 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
931 } else
932 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
933 }
934
935 /**
936 * ipr_do_req - Send driver initiated requests.
937 * @ipr_cmd: ipr command struct
938 * @done: done function
939 * @timeout_func: timeout function
940 * @timeout: timeout value
941 *
942 * This function sends the specified command to the adapter with the
943 * timeout given. The done function is invoked on command completion.
944 *
945 * Return value:
946 * none
947 **/
948 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
949 void (*done) (struct ipr_cmnd *),
950 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
951 {
952 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
953
954 ipr_cmd->done = done;
955
956 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
957 ipr_cmd->timer.expires = jiffies + timeout;
958 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
959
960 add_timer(&ipr_cmd->timer);
961
962 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
963
964 ipr_send_command(ipr_cmd);
965 }
966
967 /**
968 * ipr_internal_cmd_done - Op done function for an internally generated op.
969 * @ipr_cmd: ipr command struct
970 *
971 * This function is the op done function for an internally generated,
972 * blocking op. It simply wakes the sleeping thread.
973 *
974 * Return value:
975 * none
976 **/
977 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
978 {
979 if (ipr_cmd->sibling)
980 ipr_cmd->sibling = NULL;
981 else
982 complete(&ipr_cmd->completion);
983 }
984
985 /**
986 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
987 * @ipr_cmd: ipr command struct
988 * @dma_addr: dma address
989 * @len: transfer length
990 * @flags: ioadl flag value
991 *
992 * This function initializes an ioadl in the case where there is only a single
993 * descriptor.
994 *
995 * Return value:
996 * nothing
997 **/
998 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
999 u32 len, int flags)
1000 {
1001 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1002 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1003
1004 ipr_cmd->dma_use_sg = 1;
1005
1006 if (ipr_cmd->ioa_cfg->sis64) {
1007 ioadl64->flags = cpu_to_be32(flags);
1008 ioadl64->data_len = cpu_to_be32(len);
1009 ioadl64->address = cpu_to_be64(dma_addr);
1010
1011 ipr_cmd->ioarcb.ioadl_len =
1012 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1013 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1014 } else {
1015 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1016 ioadl->address = cpu_to_be32(dma_addr);
1017
1018 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1019 ipr_cmd->ioarcb.read_ioadl_len =
1020 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1021 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1022 } else {
1023 ipr_cmd->ioarcb.ioadl_len =
1024 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1025 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1026 }
1027 }
1028 }
1029
1030 /**
1031 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1032 * @ipr_cmd: ipr command struct
1033 * @timeout_func: function to invoke if command times out
1034 * @timeout: timeout
1035 *
1036 * Return value:
1037 * none
1038 **/
1039 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1040 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
1041 u32 timeout)
1042 {
1043 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1044
1045 init_completion(&ipr_cmd->completion);
1046 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1047
1048 spin_unlock_irq(ioa_cfg->host->host_lock);
1049 wait_for_completion(&ipr_cmd->completion);
1050 spin_lock_irq(ioa_cfg->host->host_lock);
1051 }
1052
1053 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1054 {
1055 unsigned int hrrq;
1056
1057 if (ioa_cfg->hrrq_num == 1)
1058 hrrq = 0;
1059 else {
1060 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1061 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1062 }
1063 return hrrq;
1064 }
1065
1066 /**
1067 * ipr_send_hcam - Send an HCAM to the adapter.
1068 * @ioa_cfg: ioa config struct
1069 * @type: HCAM type
1070 * @hostrcb: hostrcb struct
1071 *
1072 * This function will send a Host Controlled Async command to the adapter.
1073 * If HCAMs are currently not allowed to be issued to the adapter, it will
1074 * place the hostrcb on the free queue.
1075 *
1076 * Return value:
1077 * none
1078 **/
1079 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1080 struct ipr_hostrcb *hostrcb)
1081 {
1082 struct ipr_cmnd *ipr_cmd;
1083 struct ipr_ioarcb *ioarcb;
1084
1085 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1086 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1087 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1088 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1089
1090 ipr_cmd->u.hostrcb = hostrcb;
1091 ioarcb = &ipr_cmd->ioarcb;
1092
1093 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1094 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1095 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1096 ioarcb->cmd_pkt.cdb[1] = type;
1097 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1098 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1099
1100 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1101 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1102
1103 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1104 ipr_cmd->done = ipr_process_ccn;
1105 else
1106 ipr_cmd->done = ipr_process_error;
1107
1108 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1109
1110 ipr_send_command(ipr_cmd);
1111 } else {
1112 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1113 }
1114 }
1115
1116 /**
1117 * ipr_update_ata_class - Update the ata class in the resource entry
1118 * @res: resource entry struct
1119 * @proto: cfgte device bus protocol value
1120 *
1121 * Return value:
1122 * none
1123 **/
1124 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1125 {
1126 switch (proto) {
1127 case IPR_PROTO_SATA:
1128 case IPR_PROTO_SAS_STP:
1129 res->ata_class = ATA_DEV_ATA;
1130 break;
1131 case IPR_PROTO_SATA_ATAPI:
1132 case IPR_PROTO_SAS_STP_ATAPI:
1133 res->ata_class = ATA_DEV_ATAPI;
1134 break;
1135 default:
1136 res->ata_class = ATA_DEV_UNKNOWN;
1137 break;
1138 };
1139 }
1140
1141 /**
1142 * ipr_init_res_entry - Initialize a resource entry struct.
1143 * @res: resource entry struct
1144 * @cfgtew: config table entry wrapper struct
1145 *
1146 * Return value:
1147 * none
1148 **/
1149 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1150 struct ipr_config_table_entry_wrapper *cfgtew)
1151 {
1152 int found = 0;
1153 unsigned int proto;
1154 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1155 struct ipr_resource_entry *gscsi_res = NULL;
1156
1157 res->needs_sync_complete = 0;
1158 res->in_erp = 0;
1159 res->add_to_ml = 0;
1160 res->del_from_ml = 0;
1161 res->resetting_device = 0;
1162 res->reset_occurred = 0;
1163 res->sdev = NULL;
1164 res->sata_port = NULL;
1165
1166 if (ioa_cfg->sis64) {
1167 proto = cfgtew->u.cfgte64->proto;
1168 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1169 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1170 res->qmodel = IPR_QUEUEING_MODEL64(res);
1171 res->type = cfgtew->u.cfgte64->res_type;
1172
1173 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1174 sizeof(res->res_path));
1175
1176 res->bus = 0;
1177 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1178 sizeof(res->dev_lun.scsi_lun));
1179 res->lun = scsilun_to_int(&res->dev_lun);
1180
1181 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1182 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1183 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1184 found = 1;
1185 res->target = gscsi_res->target;
1186 break;
1187 }
1188 }
1189 if (!found) {
1190 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1191 ioa_cfg->max_devs_supported);
1192 set_bit(res->target, ioa_cfg->target_ids);
1193 }
1194 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1195 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1196 res->target = 0;
1197 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1198 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1199 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1200 ioa_cfg->max_devs_supported);
1201 set_bit(res->target, ioa_cfg->array_ids);
1202 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1203 res->bus = IPR_VSET_VIRTUAL_BUS;
1204 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1205 ioa_cfg->max_devs_supported);
1206 set_bit(res->target, ioa_cfg->vset_ids);
1207 } else {
1208 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1209 ioa_cfg->max_devs_supported);
1210 set_bit(res->target, ioa_cfg->target_ids);
1211 }
1212 } else {
1213 proto = cfgtew->u.cfgte->proto;
1214 res->qmodel = IPR_QUEUEING_MODEL(res);
1215 res->flags = cfgtew->u.cfgte->flags;
1216 if (res->flags & IPR_IS_IOA_RESOURCE)
1217 res->type = IPR_RES_TYPE_IOAFP;
1218 else
1219 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1220
1221 res->bus = cfgtew->u.cfgte->res_addr.bus;
1222 res->target = cfgtew->u.cfgte->res_addr.target;
1223 res->lun = cfgtew->u.cfgte->res_addr.lun;
1224 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1225 }
1226
1227 ipr_update_ata_class(res, proto);
1228 }
1229
1230 /**
1231 * ipr_is_same_device - Determine if two devices are the same.
1232 * @res: resource entry struct
1233 * @cfgtew: config table entry wrapper struct
1234 *
1235 * Return value:
1236 * 1 if the devices are the same / 0 otherwise
1237 **/
1238 static int ipr_is_same_device(struct ipr_resource_entry *res,
1239 struct ipr_config_table_entry_wrapper *cfgtew)
1240 {
1241 if (res->ioa_cfg->sis64) {
1242 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1243 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1244 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1245 sizeof(cfgtew->u.cfgte64->lun))) {
1246 return 1;
1247 }
1248 } else {
1249 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1250 res->target == cfgtew->u.cfgte->res_addr.target &&
1251 res->lun == cfgtew->u.cfgte->res_addr.lun)
1252 return 1;
1253 }
1254
1255 return 0;
1256 }
1257
1258 /**
1259 * __ipr_format_res_path - Format the resource path for printing.
1260 * @res_path: resource path
1261 * @buf: buffer
1262 * @len: length of buffer provided
1263 *
1264 * Return value:
1265 * pointer to buffer
1266 **/
1267 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1268 {
1269 int i;
1270 char *p = buffer;
1271
1272 *p = '\0';
1273 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1274 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1275 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1276
1277 return buffer;
1278 }
1279
1280 /**
1281 * ipr_format_res_path - Format the resource path for printing.
1282 * @ioa_cfg: ioa config struct
1283 * @res_path: resource path
1284 * @buf: buffer
1285 * @len: length of buffer provided
1286 *
1287 * Return value:
1288 * pointer to buffer
1289 **/
1290 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1291 u8 *res_path, char *buffer, int len)
1292 {
1293 char *p = buffer;
1294
1295 *p = '\0';
1296 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1297 __ipr_format_res_path(res_path, p, len - (buffer - p));
1298 return buffer;
1299 }
1300
1301 /**
1302 * ipr_update_res_entry - Update the resource entry.
1303 * @res: resource entry struct
1304 * @cfgtew: config table entry wrapper struct
1305 *
1306 * Return value:
1307 * none
1308 **/
1309 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1310 struct ipr_config_table_entry_wrapper *cfgtew)
1311 {
1312 char buffer[IPR_MAX_RES_PATH_LENGTH];
1313 unsigned int proto;
1314 int new_path = 0;
1315
1316 if (res->ioa_cfg->sis64) {
1317 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1318 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1319 res->type = cfgtew->u.cfgte64->res_type;
1320
1321 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1322 sizeof(struct ipr_std_inq_data));
1323
1324 res->qmodel = IPR_QUEUEING_MODEL64(res);
1325 proto = cfgtew->u.cfgte64->proto;
1326 res->res_handle = cfgtew->u.cfgte64->res_handle;
1327 res->dev_id = cfgtew->u.cfgte64->dev_id;
1328
1329 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1330 sizeof(res->dev_lun.scsi_lun));
1331
1332 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1333 sizeof(res->res_path))) {
1334 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1335 sizeof(res->res_path));
1336 new_path = 1;
1337 }
1338
1339 if (res->sdev && new_path)
1340 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1341 ipr_format_res_path(res->ioa_cfg,
1342 res->res_path, buffer, sizeof(buffer)));
1343 } else {
1344 res->flags = cfgtew->u.cfgte->flags;
1345 if (res->flags & IPR_IS_IOA_RESOURCE)
1346 res->type = IPR_RES_TYPE_IOAFP;
1347 else
1348 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1349
1350 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1351 sizeof(struct ipr_std_inq_data));
1352
1353 res->qmodel = IPR_QUEUEING_MODEL(res);
1354 proto = cfgtew->u.cfgte->proto;
1355 res->res_handle = cfgtew->u.cfgte->res_handle;
1356 }
1357
1358 ipr_update_ata_class(res, proto);
1359 }
1360
1361 /**
1362 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1363 * for the resource.
1364 * @res: resource entry struct
1365 * @cfgtew: config table entry wrapper struct
1366 *
1367 * Return value:
1368 * none
1369 **/
1370 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1371 {
1372 struct ipr_resource_entry *gscsi_res = NULL;
1373 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1374
1375 if (!ioa_cfg->sis64)
1376 return;
1377
1378 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1379 clear_bit(res->target, ioa_cfg->array_ids);
1380 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1381 clear_bit(res->target, ioa_cfg->vset_ids);
1382 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1383 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1384 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1385 return;
1386 clear_bit(res->target, ioa_cfg->target_ids);
1387
1388 } else if (res->bus == 0)
1389 clear_bit(res->target, ioa_cfg->target_ids);
1390 }
1391
1392 /**
1393 * ipr_handle_config_change - Handle a config change from the adapter
1394 * @ioa_cfg: ioa config struct
1395 * @hostrcb: hostrcb
1396 *
1397 * Return value:
1398 * none
1399 **/
1400 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1401 struct ipr_hostrcb *hostrcb)
1402 {
1403 struct ipr_resource_entry *res = NULL;
1404 struct ipr_config_table_entry_wrapper cfgtew;
1405 __be32 cc_res_handle;
1406
1407 u32 is_ndn = 1;
1408
1409 if (ioa_cfg->sis64) {
1410 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1411 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1412 } else {
1413 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1414 cc_res_handle = cfgtew.u.cfgte->res_handle;
1415 }
1416
1417 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1418 if (res->res_handle == cc_res_handle) {
1419 is_ndn = 0;
1420 break;
1421 }
1422 }
1423
1424 if (is_ndn) {
1425 if (list_empty(&ioa_cfg->free_res_q)) {
1426 ipr_send_hcam(ioa_cfg,
1427 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1428 hostrcb);
1429 return;
1430 }
1431
1432 res = list_entry(ioa_cfg->free_res_q.next,
1433 struct ipr_resource_entry, queue);
1434
1435 list_del(&res->queue);
1436 ipr_init_res_entry(res, &cfgtew);
1437 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1438 }
1439
1440 ipr_update_res_entry(res, &cfgtew);
1441
1442 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1443 if (res->sdev) {
1444 res->del_from_ml = 1;
1445 res->res_handle = IPR_INVALID_RES_HANDLE;
1446 schedule_work(&ioa_cfg->work_q);
1447 } else {
1448 ipr_clear_res_target(res);
1449 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1450 }
1451 } else if (!res->sdev || res->del_from_ml) {
1452 res->add_to_ml = 1;
1453 schedule_work(&ioa_cfg->work_q);
1454 }
1455
1456 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1457 }
1458
1459 /**
1460 * ipr_process_ccn - Op done function for a CCN.
1461 * @ipr_cmd: ipr command struct
1462 *
1463 * This function is the op done function for a configuration
1464 * change notification host controlled async from the adapter.
1465 *
1466 * Return value:
1467 * none
1468 **/
1469 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1470 {
1471 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1472 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1473 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1474
1475 list_del(&hostrcb->queue);
1476 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1477
1478 if (ioasc) {
1479 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1480 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1481 dev_err(&ioa_cfg->pdev->dev,
1482 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1483
1484 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1485 } else {
1486 ipr_handle_config_change(ioa_cfg, hostrcb);
1487 }
1488 }
1489
1490 /**
1491 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1492 * @i: index into buffer
1493 * @buf: string to modify
1494 *
1495 * This function will strip all trailing whitespace, pad the end
1496 * of the string with a single space, and NULL terminate the string.
1497 *
1498 * Return value:
1499 * new length of string
1500 **/
1501 static int strip_and_pad_whitespace(int i, char *buf)
1502 {
1503 while (i && buf[i] == ' ')
1504 i--;
1505 buf[i+1] = ' ';
1506 buf[i+2] = '\0';
1507 return i + 2;
1508 }
1509
1510 /**
1511 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1512 * @prefix: string to print at start of printk
1513 * @hostrcb: hostrcb pointer
1514 * @vpd: vendor/product id/sn struct
1515 *
1516 * Return value:
1517 * none
1518 **/
1519 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1520 struct ipr_vpd *vpd)
1521 {
1522 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1523 int i = 0;
1524
1525 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1526 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1527
1528 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1529 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1530
1531 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1532 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1533
1534 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1535 }
1536
1537 /**
1538 * ipr_log_vpd - Log the passed VPD to the error log.
1539 * @vpd: vendor/product id/sn struct
1540 *
1541 * Return value:
1542 * none
1543 **/
1544 static void ipr_log_vpd(struct ipr_vpd *vpd)
1545 {
1546 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1547 + IPR_SERIAL_NUM_LEN];
1548
1549 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1550 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1551 IPR_PROD_ID_LEN);
1552 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1553 ipr_err("Vendor/Product ID: %s\n", buffer);
1554
1555 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1556 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1557 ipr_err(" Serial Number: %s\n", buffer);
1558 }
1559
1560 /**
1561 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1562 * @prefix: string to print at start of printk
1563 * @hostrcb: hostrcb pointer
1564 * @vpd: vendor/product id/sn/wwn struct
1565 *
1566 * Return value:
1567 * none
1568 **/
1569 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1570 struct ipr_ext_vpd *vpd)
1571 {
1572 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1573 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1574 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1575 }
1576
1577 /**
1578 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1579 * @vpd: vendor/product id/sn/wwn struct
1580 *
1581 * Return value:
1582 * none
1583 **/
1584 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1585 {
1586 ipr_log_vpd(&vpd->vpd);
1587 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1588 be32_to_cpu(vpd->wwid[1]));
1589 }
1590
1591 /**
1592 * ipr_log_enhanced_cache_error - Log a cache error.
1593 * @ioa_cfg: ioa config struct
1594 * @hostrcb: hostrcb struct
1595 *
1596 * Return value:
1597 * none
1598 **/
1599 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1600 struct ipr_hostrcb *hostrcb)
1601 {
1602 struct ipr_hostrcb_type_12_error *error;
1603
1604 if (ioa_cfg->sis64)
1605 error = &hostrcb->hcam.u.error64.u.type_12_error;
1606 else
1607 error = &hostrcb->hcam.u.error.u.type_12_error;
1608
1609 ipr_err("-----Current Configuration-----\n");
1610 ipr_err("Cache Directory Card Information:\n");
1611 ipr_log_ext_vpd(&error->ioa_vpd);
1612 ipr_err("Adapter Card Information:\n");
1613 ipr_log_ext_vpd(&error->cfc_vpd);
1614
1615 ipr_err("-----Expected Configuration-----\n");
1616 ipr_err("Cache Directory Card Information:\n");
1617 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1618 ipr_err("Adapter Card Information:\n");
1619 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1620
1621 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1622 be32_to_cpu(error->ioa_data[0]),
1623 be32_to_cpu(error->ioa_data[1]),
1624 be32_to_cpu(error->ioa_data[2]));
1625 }
1626
1627 /**
1628 * ipr_log_cache_error - Log a cache error.
1629 * @ioa_cfg: ioa config struct
1630 * @hostrcb: hostrcb struct
1631 *
1632 * Return value:
1633 * none
1634 **/
1635 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1636 struct ipr_hostrcb *hostrcb)
1637 {
1638 struct ipr_hostrcb_type_02_error *error =
1639 &hostrcb->hcam.u.error.u.type_02_error;
1640
1641 ipr_err("-----Current Configuration-----\n");
1642 ipr_err("Cache Directory Card Information:\n");
1643 ipr_log_vpd(&error->ioa_vpd);
1644 ipr_err("Adapter Card Information:\n");
1645 ipr_log_vpd(&error->cfc_vpd);
1646
1647 ipr_err("-----Expected Configuration-----\n");
1648 ipr_err("Cache Directory Card Information:\n");
1649 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1650 ipr_err("Adapter Card Information:\n");
1651 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1652
1653 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1654 be32_to_cpu(error->ioa_data[0]),
1655 be32_to_cpu(error->ioa_data[1]),
1656 be32_to_cpu(error->ioa_data[2]));
1657 }
1658
1659 /**
1660 * ipr_log_enhanced_config_error - Log a configuration error.
1661 * @ioa_cfg: ioa config struct
1662 * @hostrcb: hostrcb struct
1663 *
1664 * Return value:
1665 * none
1666 **/
1667 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1668 struct ipr_hostrcb *hostrcb)
1669 {
1670 int errors_logged, i;
1671 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1672 struct ipr_hostrcb_type_13_error *error;
1673
1674 error = &hostrcb->hcam.u.error.u.type_13_error;
1675 errors_logged = be32_to_cpu(error->errors_logged);
1676
1677 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1678 be32_to_cpu(error->errors_detected), errors_logged);
1679
1680 dev_entry = error->dev;
1681
1682 for (i = 0; i < errors_logged; i++, dev_entry++) {
1683 ipr_err_separator;
1684
1685 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1686 ipr_log_ext_vpd(&dev_entry->vpd);
1687
1688 ipr_err("-----New Device Information-----\n");
1689 ipr_log_ext_vpd(&dev_entry->new_vpd);
1690
1691 ipr_err("Cache Directory Card Information:\n");
1692 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1693
1694 ipr_err("Adapter Card Information:\n");
1695 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1696 }
1697 }
1698
1699 /**
1700 * ipr_log_sis64_config_error - Log a device error.
1701 * @ioa_cfg: ioa config struct
1702 * @hostrcb: hostrcb struct
1703 *
1704 * Return value:
1705 * none
1706 **/
1707 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1708 struct ipr_hostrcb *hostrcb)
1709 {
1710 int errors_logged, i;
1711 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1712 struct ipr_hostrcb_type_23_error *error;
1713 char buffer[IPR_MAX_RES_PATH_LENGTH];
1714
1715 error = &hostrcb->hcam.u.error64.u.type_23_error;
1716 errors_logged = be32_to_cpu(error->errors_logged);
1717
1718 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1719 be32_to_cpu(error->errors_detected), errors_logged);
1720
1721 dev_entry = error->dev;
1722
1723 for (i = 0; i < errors_logged; i++, dev_entry++) {
1724 ipr_err_separator;
1725
1726 ipr_err("Device %d : %s", i + 1,
1727 __ipr_format_res_path(dev_entry->res_path,
1728 buffer, sizeof(buffer)));
1729 ipr_log_ext_vpd(&dev_entry->vpd);
1730
1731 ipr_err("-----New Device Information-----\n");
1732 ipr_log_ext_vpd(&dev_entry->new_vpd);
1733
1734 ipr_err("Cache Directory Card Information:\n");
1735 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1736
1737 ipr_err("Adapter Card Information:\n");
1738 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1739 }
1740 }
1741
1742 /**
1743 * ipr_log_config_error - Log a configuration error.
1744 * @ioa_cfg: ioa config struct
1745 * @hostrcb: hostrcb struct
1746 *
1747 * Return value:
1748 * none
1749 **/
1750 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1751 struct ipr_hostrcb *hostrcb)
1752 {
1753 int errors_logged, i;
1754 struct ipr_hostrcb_device_data_entry *dev_entry;
1755 struct ipr_hostrcb_type_03_error *error;
1756
1757 error = &hostrcb->hcam.u.error.u.type_03_error;
1758 errors_logged = be32_to_cpu(error->errors_logged);
1759
1760 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1761 be32_to_cpu(error->errors_detected), errors_logged);
1762
1763 dev_entry = error->dev;
1764
1765 for (i = 0; i < errors_logged; i++, dev_entry++) {
1766 ipr_err_separator;
1767
1768 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1769 ipr_log_vpd(&dev_entry->vpd);
1770
1771 ipr_err("-----New Device Information-----\n");
1772 ipr_log_vpd(&dev_entry->new_vpd);
1773
1774 ipr_err("Cache Directory Card Information:\n");
1775 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1776
1777 ipr_err("Adapter Card Information:\n");
1778 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1779
1780 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1781 be32_to_cpu(dev_entry->ioa_data[0]),
1782 be32_to_cpu(dev_entry->ioa_data[1]),
1783 be32_to_cpu(dev_entry->ioa_data[2]),
1784 be32_to_cpu(dev_entry->ioa_data[3]),
1785 be32_to_cpu(dev_entry->ioa_data[4]));
1786 }
1787 }
1788
1789 /**
1790 * ipr_log_enhanced_array_error - Log an array configuration error.
1791 * @ioa_cfg: ioa config struct
1792 * @hostrcb: hostrcb struct
1793 *
1794 * Return value:
1795 * none
1796 **/
1797 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1798 struct ipr_hostrcb *hostrcb)
1799 {
1800 int i, num_entries;
1801 struct ipr_hostrcb_type_14_error *error;
1802 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1803 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1804
1805 error = &hostrcb->hcam.u.error.u.type_14_error;
1806
1807 ipr_err_separator;
1808
1809 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1810 error->protection_level,
1811 ioa_cfg->host->host_no,
1812 error->last_func_vset_res_addr.bus,
1813 error->last_func_vset_res_addr.target,
1814 error->last_func_vset_res_addr.lun);
1815
1816 ipr_err_separator;
1817
1818 array_entry = error->array_member;
1819 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1820 ARRAY_SIZE(error->array_member));
1821
1822 for (i = 0; i < num_entries; i++, array_entry++) {
1823 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1824 continue;
1825
1826 if (be32_to_cpu(error->exposed_mode_adn) == i)
1827 ipr_err("Exposed Array Member %d:\n", i);
1828 else
1829 ipr_err("Array Member %d:\n", i);
1830
1831 ipr_log_ext_vpd(&array_entry->vpd);
1832 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1833 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1834 "Expected Location");
1835
1836 ipr_err_separator;
1837 }
1838 }
1839
1840 /**
1841 * ipr_log_array_error - Log an array configuration error.
1842 * @ioa_cfg: ioa config struct
1843 * @hostrcb: hostrcb struct
1844 *
1845 * Return value:
1846 * none
1847 **/
1848 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1849 struct ipr_hostrcb *hostrcb)
1850 {
1851 int i;
1852 struct ipr_hostrcb_type_04_error *error;
1853 struct ipr_hostrcb_array_data_entry *array_entry;
1854 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1855
1856 error = &hostrcb->hcam.u.error.u.type_04_error;
1857
1858 ipr_err_separator;
1859
1860 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1861 error->protection_level,
1862 ioa_cfg->host->host_no,
1863 error->last_func_vset_res_addr.bus,
1864 error->last_func_vset_res_addr.target,
1865 error->last_func_vset_res_addr.lun);
1866
1867 ipr_err_separator;
1868
1869 array_entry = error->array_member;
1870
1871 for (i = 0; i < 18; i++) {
1872 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1873 continue;
1874
1875 if (be32_to_cpu(error->exposed_mode_adn) == i)
1876 ipr_err("Exposed Array Member %d:\n", i);
1877 else
1878 ipr_err("Array Member %d:\n", i);
1879
1880 ipr_log_vpd(&array_entry->vpd);
1881
1882 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1883 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1884 "Expected Location");
1885
1886 ipr_err_separator;
1887
1888 if (i == 9)
1889 array_entry = error->array_member2;
1890 else
1891 array_entry++;
1892 }
1893 }
1894
1895 /**
1896 * ipr_log_hex_data - Log additional hex IOA error data.
1897 * @ioa_cfg: ioa config struct
1898 * @data: IOA error data
1899 * @len: data length
1900 *
1901 * Return value:
1902 * none
1903 **/
1904 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1905 {
1906 int i;
1907
1908 if (len == 0)
1909 return;
1910
1911 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1912 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1913
1914 for (i = 0; i < len / 4; i += 4) {
1915 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1916 be32_to_cpu(data[i]),
1917 be32_to_cpu(data[i+1]),
1918 be32_to_cpu(data[i+2]),
1919 be32_to_cpu(data[i+3]));
1920 }
1921 }
1922
1923 /**
1924 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1925 * @ioa_cfg: ioa config struct
1926 * @hostrcb: hostrcb struct
1927 *
1928 * Return value:
1929 * none
1930 **/
1931 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1932 struct ipr_hostrcb *hostrcb)
1933 {
1934 struct ipr_hostrcb_type_17_error *error;
1935
1936 if (ioa_cfg->sis64)
1937 error = &hostrcb->hcam.u.error64.u.type_17_error;
1938 else
1939 error = &hostrcb->hcam.u.error.u.type_17_error;
1940
1941 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1942 strim(error->failure_reason);
1943
1944 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1945 be32_to_cpu(hostrcb->hcam.u.error.prc));
1946 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1947 ipr_log_hex_data(ioa_cfg, error->data,
1948 be32_to_cpu(hostrcb->hcam.length) -
1949 (offsetof(struct ipr_hostrcb_error, u) +
1950 offsetof(struct ipr_hostrcb_type_17_error, data)));
1951 }
1952
1953 /**
1954 * ipr_log_dual_ioa_error - Log a dual adapter error.
1955 * @ioa_cfg: ioa config struct
1956 * @hostrcb: hostrcb struct
1957 *
1958 * Return value:
1959 * none
1960 **/
1961 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1962 struct ipr_hostrcb *hostrcb)
1963 {
1964 struct ipr_hostrcb_type_07_error *error;
1965
1966 error = &hostrcb->hcam.u.error.u.type_07_error;
1967 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1968 strim(error->failure_reason);
1969
1970 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1971 be32_to_cpu(hostrcb->hcam.u.error.prc));
1972 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1973 ipr_log_hex_data(ioa_cfg, error->data,
1974 be32_to_cpu(hostrcb->hcam.length) -
1975 (offsetof(struct ipr_hostrcb_error, u) +
1976 offsetof(struct ipr_hostrcb_type_07_error, data)));
1977 }
1978
1979 static const struct {
1980 u8 active;
1981 char *desc;
1982 } path_active_desc[] = {
1983 { IPR_PATH_NO_INFO, "Path" },
1984 { IPR_PATH_ACTIVE, "Active path" },
1985 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1986 };
1987
1988 static const struct {
1989 u8 state;
1990 char *desc;
1991 } path_state_desc[] = {
1992 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1993 { IPR_PATH_HEALTHY, "is healthy" },
1994 { IPR_PATH_DEGRADED, "is degraded" },
1995 { IPR_PATH_FAILED, "is failed" }
1996 };
1997
1998 /**
1999 * ipr_log_fabric_path - Log a fabric path error
2000 * @hostrcb: hostrcb struct
2001 * @fabric: fabric descriptor
2002 *
2003 * Return value:
2004 * none
2005 **/
2006 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2007 struct ipr_hostrcb_fabric_desc *fabric)
2008 {
2009 int i, j;
2010 u8 path_state = fabric->path_state;
2011 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2012 u8 state = path_state & IPR_PATH_STATE_MASK;
2013
2014 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2015 if (path_active_desc[i].active != active)
2016 continue;
2017
2018 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2019 if (path_state_desc[j].state != state)
2020 continue;
2021
2022 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2023 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2024 path_active_desc[i].desc, path_state_desc[j].desc,
2025 fabric->ioa_port);
2026 } else if (fabric->cascaded_expander == 0xff) {
2027 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2028 path_active_desc[i].desc, path_state_desc[j].desc,
2029 fabric->ioa_port, fabric->phy);
2030 } else if (fabric->phy == 0xff) {
2031 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2032 path_active_desc[i].desc, path_state_desc[j].desc,
2033 fabric->ioa_port, fabric->cascaded_expander);
2034 } else {
2035 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2036 path_active_desc[i].desc, path_state_desc[j].desc,
2037 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2038 }
2039 return;
2040 }
2041 }
2042
2043 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2044 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2045 }
2046
2047 /**
2048 * ipr_log64_fabric_path - Log a fabric path error
2049 * @hostrcb: hostrcb struct
2050 * @fabric: fabric descriptor
2051 *
2052 * Return value:
2053 * none
2054 **/
2055 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2056 struct ipr_hostrcb64_fabric_desc *fabric)
2057 {
2058 int i, j;
2059 u8 path_state = fabric->path_state;
2060 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2061 u8 state = path_state & IPR_PATH_STATE_MASK;
2062 char buffer[IPR_MAX_RES_PATH_LENGTH];
2063
2064 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2065 if (path_active_desc[i].active != active)
2066 continue;
2067
2068 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2069 if (path_state_desc[j].state != state)
2070 continue;
2071
2072 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2073 path_active_desc[i].desc, path_state_desc[j].desc,
2074 ipr_format_res_path(hostrcb->ioa_cfg,
2075 fabric->res_path,
2076 buffer, sizeof(buffer)));
2077 return;
2078 }
2079 }
2080
2081 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2082 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2083 buffer, sizeof(buffer)));
2084 }
2085
2086 static const struct {
2087 u8 type;
2088 char *desc;
2089 } path_type_desc[] = {
2090 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2091 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2092 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2093 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2094 };
2095
2096 static const struct {
2097 u8 status;
2098 char *desc;
2099 } path_status_desc[] = {
2100 { IPR_PATH_CFG_NO_PROB, "Functional" },
2101 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2102 { IPR_PATH_CFG_FAILED, "Failed" },
2103 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2104 { IPR_PATH_NOT_DETECTED, "Missing" },
2105 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2106 };
2107
2108 static const char *link_rate[] = {
2109 "unknown",
2110 "disabled",
2111 "phy reset problem",
2112 "spinup hold",
2113 "port selector",
2114 "unknown",
2115 "unknown",
2116 "unknown",
2117 "1.5Gbps",
2118 "3.0Gbps",
2119 "unknown",
2120 "unknown",
2121 "unknown",
2122 "unknown",
2123 "unknown",
2124 "unknown"
2125 };
2126
2127 /**
2128 * ipr_log_path_elem - Log a fabric path element.
2129 * @hostrcb: hostrcb struct
2130 * @cfg: fabric path element struct
2131 *
2132 * Return value:
2133 * none
2134 **/
2135 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2136 struct ipr_hostrcb_config_element *cfg)
2137 {
2138 int i, j;
2139 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2140 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2141
2142 if (type == IPR_PATH_CFG_NOT_EXIST)
2143 return;
2144
2145 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2146 if (path_type_desc[i].type != type)
2147 continue;
2148
2149 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2150 if (path_status_desc[j].status != status)
2151 continue;
2152
2153 if (type == IPR_PATH_CFG_IOA_PORT) {
2154 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2155 path_status_desc[j].desc, path_type_desc[i].desc,
2156 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2157 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2158 } else {
2159 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2160 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2161 path_status_desc[j].desc, path_type_desc[i].desc,
2162 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2163 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2164 } else if (cfg->cascaded_expander == 0xff) {
2165 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2166 "WWN=%08X%08X\n", path_status_desc[j].desc,
2167 path_type_desc[i].desc, cfg->phy,
2168 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2169 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2170 } else if (cfg->phy == 0xff) {
2171 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2172 "WWN=%08X%08X\n", path_status_desc[j].desc,
2173 path_type_desc[i].desc, cfg->cascaded_expander,
2174 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2175 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2176 } else {
2177 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2178 "WWN=%08X%08X\n", path_status_desc[j].desc,
2179 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2180 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2181 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2182 }
2183 }
2184 return;
2185 }
2186 }
2187
2188 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2189 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2190 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2191 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2192 }
2193
2194 /**
2195 * ipr_log64_path_elem - Log a fabric path element.
2196 * @hostrcb: hostrcb struct
2197 * @cfg: fabric path element struct
2198 *
2199 * Return value:
2200 * none
2201 **/
2202 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2203 struct ipr_hostrcb64_config_element *cfg)
2204 {
2205 int i, j;
2206 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2207 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2208 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2209 char buffer[IPR_MAX_RES_PATH_LENGTH];
2210
2211 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2212 return;
2213
2214 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2215 if (path_type_desc[i].type != type)
2216 continue;
2217
2218 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2219 if (path_status_desc[j].status != status)
2220 continue;
2221
2222 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2223 path_status_desc[j].desc, path_type_desc[i].desc,
2224 ipr_format_res_path(hostrcb->ioa_cfg,
2225 cfg->res_path, buffer, sizeof(buffer)),
2226 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2227 be32_to_cpu(cfg->wwid[0]),
2228 be32_to_cpu(cfg->wwid[1]));
2229 return;
2230 }
2231 }
2232 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2233 "WWN=%08X%08X\n", cfg->type_status,
2234 ipr_format_res_path(hostrcb->ioa_cfg,
2235 cfg->res_path, buffer, sizeof(buffer)),
2236 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2237 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2238 }
2239
2240 /**
2241 * ipr_log_fabric_error - Log a fabric error.
2242 * @ioa_cfg: ioa config struct
2243 * @hostrcb: hostrcb struct
2244 *
2245 * Return value:
2246 * none
2247 **/
2248 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2249 struct ipr_hostrcb *hostrcb)
2250 {
2251 struct ipr_hostrcb_type_20_error *error;
2252 struct ipr_hostrcb_fabric_desc *fabric;
2253 struct ipr_hostrcb_config_element *cfg;
2254 int i, add_len;
2255
2256 error = &hostrcb->hcam.u.error.u.type_20_error;
2257 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2258 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2259
2260 add_len = be32_to_cpu(hostrcb->hcam.length) -
2261 (offsetof(struct ipr_hostrcb_error, u) +
2262 offsetof(struct ipr_hostrcb_type_20_error, desc));
2263
2264 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2265 ipr_log_fabric_path(hostrcb, fabric);
2266 for_each_fabric_cfg(fabric, cfg)
2267 ipr_log_path_elem(hostrcb, cfg);
2268
2269 add_len -= be16_to_cpu(fabric->length);
2270 fabric = (struct ipr_hostrcb_fabric_desc *)
2271 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2272 }
2273
2274 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2275 }
2276
2277 /**
2278 * ipr_log_sis64_array_error - Log a sis64 array error.
2279 * @ioa_cfg: ioa config struct
2280 * @hostrcb: hostrcb struct
2281 *
2282 * Return value:
2283 * none
2284 **/
2285 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2286 struct ipr_hostrcb *hostrcb)
2287 {
2288 int i, num_entries;
2289 struct ipr_hostrcb_type_24_error *error;
2290 struct ipr_hostrcb64_array_data_entry *array_entry;
2291 char buffer[IPR_MAX_RES_PATH_LENGTH];
2292 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2293
2294 error = &hostrcb->hcam.u.error64.u.type_24_error;
2295
2296 ipr_err_separator;
2297
2298 ipr_err("RAID %s Array Configuration: %s\n",
2299 error->protection_level,
2300 ipr_format_res_path(ioa_cfg, error->last_res_path,
2301 buffer, sizeof(buffer)));
2302
2303 ipr_err_separator;
2304
2305 array_entry = error->array_member;
2306 num_entries = min_t(u32, error->num_entries,
2307 ARRAY_SIZE(error->array_member));
2308
2309 for (i = 0; i < num_entries; i++, array_entry++) {
2310
2311 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2312 continue;
2313
2314 if (error->exposed_mode_adn == i)
2315 ipr_err("Exposed Array Member %d:\n", i);
2316 else
2317 ipr_err("Array Member %d:\n", i);
2318
2319 ipr_err("Array Member %d:\n", i);
2320 ipr_log_ext_vpd(&array_entry->vpd);
2321 ipr_err("Current Location: %s\n",
2322 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2323 buffer, sizeof(buffer)));
2324 ipr_err("Expected Location: %s\n",
2325 ipr_format_res_path(ioa_cfg,
2326 array_entry->expected_res_path,
2327 buffer, sizeof(buffer)));
2328
2329 ipr_err_separator;
2330 }
2331 }
2332
2333 /**
2334 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2335 * @ioa_cfg: ioa config struct
2336 * @hostrcb: hostrcb struct
2337 *
2338 * Return value:
2339 * none
2340 **/
2341 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2342 struct ipr_hostrcb *hostrcb)
2343 {
2344 struct ipr_hostrcb_type_30_error *error;
2345 struct ipr_hostrcb64_fabric_desc *fabric;
2346 struct ipr_hostrcb64_config_element *cfg;
2347 int i, add_len;
2348
2349 error = &hostrcb->hcam.u.error64.u.type_30_error;
2350
2351 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2352 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2353
2354 add_len = be32_to_cpu(hostrcb->hcam.length) -
2355 (offsetof(struct ipr_hostrcb64_error, u) +
2356 offsetof(struct ipr_hostrcb_type_30_error, desc));
2357
2358 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2359 ipr_log64_fabric_path(hostrcb, fabric);
2360 for_each_fabric_cfg(fabric, cfg)
2361 ipr_log64_path_elem(hostrcb, cfg);
2362
2363 add_len -= be16_to_cpu(fabric->length);
2364 fabric = (struct ipr_hostrcb64_fabric_desc *)
2365 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2366 }
2367
2368 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2369 }
2370
2371 /**
2372 * ipr_log_generic_error - Log an adapter error.
2373 * @ioa_cfg: ioa config struct
2374 * @hostrcb: hostrcb struct
2375 *
2376 * Return value:
2377 * none
2378 **/
2379 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2380 struct ipr_hostrcb *hostrcb)
2381 {
2382 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2383 be32_to_cpu(hostrcb->hcam.length));
2384 }
2385
2386 /**
2387 * ipr_log_sis64_device_error - Log a cache error.
2388 * @ioa_cfg: ioa config struct
2389 * @hostrcb: hostrcb struct
2390 *
2391 * Return value:
2392 * none
2393 **/
2394 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2395 struct ipr_hostrcb *hostrcb)
2396 {
2397 struct ipr_hostrcb_type_21_error *error;
2398 char buffer[IPR_MAX_RES_PATH_LENGTH];
2399
2400 error = &hostrcb->hcam.u.error64.u.type_21_error;
2401
2402 ipr_err("-----Failing Device Information-----\n");
2403 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2404 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2405 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2406 ipr_err("Device Resource Path: %s\n",
2407 __ipr_format_res_path(error->res_path,
2408 buffer, sizeof(buffer)));
2409 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2410 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2411 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2412 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc);
2413 ipr_err("SCSI Sense Data:\n");
2414 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2415 ipr_err("SCSI Command Descriptor Block: \n");
2416 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2417
2418 ipr_err("Additional IOA Data:\n");
2419 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2420 }
2421
2422 /**
2423 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2424 * @ioasc: IOASC
2425 *
2426 * This function will return the index of into the ipr_error_table
2427 * for the specified IOASC. If the IOASC is not in the table,
2428 * 0 will be returned, which points to the entry used for unknown errors.
2429 *
2430 * Return value:
2431 * index into the ipr_error_table
2432 **/
2433 static u32 ipr_get_error(u32 ioasc)
2434 {
2435 int i;
2436
2437 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2438 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2439 return i;
2440
2441 return 0;
2442 }
2443
2444 /**
2445 * ipr_handle_log_data - Log an adapter error.
2446 * @ioa_cfg: ioa config struct
2447 * @hostrcb: hostrcb struct
2448 *
2449 * This function logs an adapter error to the system.
2450 *
2451 * Return value:
2452 * none
2453 **/
2454 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2455 struct ipr_hostrcb *hostrcb)
2456 {
2457 u32 ioasc;
2458 int error_index;
2459 struct ipr_hostrcb_type_21_error *error;
2460
2461 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2462 return;
2463
2464 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2465 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2466
2467 if (ioa_cfg->sis64)
2468 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2469 else
2470 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2471
2472 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2473 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2474 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2475 scsi_report_bus_reset(ioa_cfg->host,
2476 hostrcb->hcam.u.error.fd_res_addr.bus);
2477 }
2478
2479 error_index = ipr_get_error(ioasc);
2480
2481 if (!ipr_error_table[error_index].log_hcam)
2482 return;
2483
2484 if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2485 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2486 error = &hostrcb->hcam.u.error64.u.type_21_error;
2487
2488 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2489 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2490 return;
2491 }
2492
2493 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2494
2495 /* Set indication we have logged an error */
2496 ioa_cfg->errors_logged++;
2497
2498 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2499 return;
2500 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2501 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2502
2503 switch (hostrcb->hcam.overlay_id) {
2504 case IPR_HOST_RCB_OVERLAY_ID_2:
2505 ipr_log_cache_error(ioa_cfg, hostrcb);
2506 break;
2507 case IPR_HOST_RCB_OVERLAY_ID_3:
2508 ipr_log_config_error(ioa_cfg, hostrcb);
2509 break;
2510 case IPR_HOST_RCB_OVERLAY_ID_4:
2511 case IPR_HOST_RCB_OVERLAY_ID_6:
2512 ipr_log_array_error(ioa_cfg, hostrcb);
2513 break;
2514 case IPR_HOST_RCB_OVERLAY_ID_7:
2515 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2516 break;
2517 case IPR_HOST_RCB_OVERLAY_ID_12:
2518 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2519 break;
2520 case IPR_HOST_RCB_OVERLAY_ID_13:
2521 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2522 break;
2523 case IPR_HOST_RCB_OVERLAY_ID_14:
2524 case IPR_HOST_RCB_OVERLAY_ID_16:
2525 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2526 break;
2527 case IPR_HOST_RCB_OVERLAY_ID_17:
2528 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2529 break;
2530 case IPR_HOST_RCB_OVERLAY_ID_20:
2531 ipr_log_fabric_error(ioa_cfg, hostrcb);
2532 break;
2533 case IPR_HOST_RCB_OVERLAY_ID_21:
2534 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2535 break;
2536 case IPR_HOST_RCB_OVERLAY_ID_23:
2537 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2538 break;
2539 case IPR_HOST_RCB_OVERLAY_ID_24:
2540 case IPR_HOST_RCB_OVERLAY_ID_26:
2541 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2542 break;
2543 case IPR_HOST_RCB_OVERLAY_ID_30:
2544 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2545 break;
2546 case IPR_HOST_RCB_OVERLAY_ID_1:
2547 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2548 default:
2549 ipr_log_generic_error(ioa_cfg, hostrcb);
2550 break;
2551 }
2552 }
2553
2554 /**
2555 * ipr_process_error - Op done function for an adapter error log.
2556 * @ipr_cmd: ipr command struct
2557 *
2558 * This function is the op done function for an error log host
2559 * controlled async from the adapter. It will log the error and
2560 * send the HCAM back to the adapter.
2561 *
2562 * Return value:
2563 * none
2564 **/
2565 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2566 {
2567 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2568 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2569 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2570 u32 fd_ioasc;
2571
2572 if (ioa_cfg->sis64)
2573 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2574 else
2575 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2576
2577 list_del(&hostrcb->queue);
2578 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2579
2580 if (!ioasc) {
2581 ipr_handle_log_data(ioa_cfg, hostrcb);
2582 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2583 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2584 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2585 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2586 dev_err(&ioa_cfg->pdev->dev,
2587 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2588 }
2589
2590 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2591 }
2592
2593 /**
2594 * ipr_timeout - An internally generated op has timed out.
2595 * @ipr_cmd: ipr command struct
2596 *
2597 * This function blocks host requests and initiates an
2598 * adapter reset.
2599 *
2600 * Return value:
2601 * none
2602 **/
2603 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2604 {
2605 unsigned long lock_flags = 0;
2606 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2607
2608 ENTER;
2609 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2610
2611 ioa_cfg->errors_logged++;
2612 dev_err(&ioa_cfg->pdev->dev,
2613 "Adapter being reset due to command timeout.\n");
2614
2615 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2616 ioa_cfg->sdt_state = GET_DUMP;
2617
2618 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2619 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2620
2621 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2622 LEAVE;
2623 }
2624
2625 /**
2626 * ipr_oper_timeout - Adapter timed out transitioning to operational
2627 * @ipr_cmd: ipr command struct
2628 *
2629 * This function blocks host requests and initiates an
2630 * adapter reset.
2631 *
2632 * Return value:
2633 * none
2634 **/
2635 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2636 {
2637 unsigned long lock_flags = 0;
2638 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2639
2640 ENTER;
2641 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2642
2643 ioa_cfg->errors_logged++;
2644 dev_err(&ioa_cfg->pdev->dev,
2645 "Adapter timed out transitioning to operational.\n");
2646
2647 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2648 ioa_cfg->sdt_state = GET_DUMP;
2649
2650 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2651 if (ipr_fastfail)
2652 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2653 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2654 }
2655
2656 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2657 LEAVE;
2658 }
2659
2660 /**
2661 * ipr_find_ses_entry - Find matching SES in SES table
2662 * @res: resource entry struct of SES
2663 *
2664 * Return value:
2665 * pointer to SES table entry / NULL on failure
2666 **/
2667 static const struct ipr_ses_table_entry *
2668 ipr_find_ses_entry(struct ipr_resource_entry *res)
2669 {
2670 int i, j, matches;
2671 struct ipr_std_inq_vpids *vpids;
2672 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2673
2674 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2675 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2676 if (ste->compare_product_id_byte[j] == 'X') {
2677 vpids = &res->std_inq_data.vpids;
2678 if (vpids->product_id[j] == ste->product_id[j])
2679 matches++;
2680 else
2681 break;
2682 } else
2683 matches++;
2684 }
2685
2686 if (matches == IPR_PROD_ID_LEN)
2687 return ste;
2688 }
2689
2690 return NULL;
2691 }
2692
2693 /**
2694 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2695 * @ioa_cfg: ioa config struct
2696 * @bus: SCSI bus
2697 * @bus_width: bus width
2698 *
2699 * Return value:
2700 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2701 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2702 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2703 * max 160MHz = max 320MB/sec).
2704 **/
2705 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2706 {
2707 struct ipr_resource_entry *res;
2708 const struct ipr_ses_table_entry *ste;
2709 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2710
2711 /* Loop through each config table entry in the config table buffer */
2712 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2713 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2714 continue;
2715
2716 if (bus != res->bus)
2717 continue;
2718
2719 if (!(ste = ipr_find_ses_entry(res)))
2720 continue;
2721
2722 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2723 }
2724
2725 return max_xfer_rate;
2726 }
2727
2728 /**
2729 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2730 * @ioa_cfg: ioa config struct
2731 * @max_delay: max delay in micro-seconds to wait
2732 *
2733 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2734 *
2735 * Return value:
2736 * 0 on success / other on failure
2737 **/
2738 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2739 {
2740 volatile u32 pcii_reg;
2741 int delay = 1;
2742
2743 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2744 while (delay < max_delay) {
2745 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2746
2747 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2748 return 0;
2749
2750 /* udelay cannot be used if delay is more than a few milliseconds */
2751 if ((delay / 1000) > MAX_UDELAY_MS)
2752 mdelay(delay / 1000);
2753 else
2754 udelay(delay);
2755
2756 delay += delay;
2757 }
2758 return -EIO;
2759 }
2760
2761 /**
2762 * ipr_get_sis64_dump_data_section - Dump IOA memory
2763 * @ioa_cfg: ioa config struct
2764 * @start_addr: adapter address to dump
2765 * @dest: destination kernel buffer
2766 * @length_in_words: length to dump in 4 byte words
2767 *
2768 * Return value:
2769 * 0 on success
2770 **/
2771 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2772 u32 start_addr,
2773 __be32 *dest, u32 length_in_words)
2774 {
2775 int i;
2776
2777 for (i = 0; i < length_in_words; i++) {
2778 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2779 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2780 dest++;
2781 }
2782
2783 return 0;
2784 }
2785
2786 /**
2787 * ipr_get_ldump_data_section - Dump IOA memory
2788 * @ioa_cfg: ioa config struct
2789 * @start_addr: adapter address to dump
2790 * @dest: destination kernel buffer
2791 * @length_in_words: length to dump in 4 byte words
2792 *
2793 * Return value:
2794 * 0 on success / -EIO on failure
2795 **/
2796 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2797 u32 start_addr,
2798 __be32 *dest, u32 length_in_words)
2799 {
2800 volatile u32 temp_pcii_reg;
2801 int i, delay = 0;
2802
2803 if (ioa_cfg->sis64)
2804 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2805 dest, length_in_words);
2806
2807 /* Write IOA interrupt reg starting LDUMP state */
2808 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2809 ioa_cfg->regs.set_uproc_interrupt_reg32);
2810
2811 /* Wait for IO debug acknowledge */
2812 if (ipr_wait_iodbg_ack(ioa_cfg,
2813 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2814 dev_err(&ioa_cfg->pdev->dev,
2815 "IOA dump long data transfer timeout\n");
2816 return -EIO;
2817 }
2818
2819 /* Signal LDUMP interlocked - clear IO debug ack */
2820 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2821 ioa_cfg->regs.clr_interrupt_reg);
2822
2823 /* Write Mailbox with starting address */
2824 writel(start_addr, ioa_cfg->ioa_mailbox);
2825
2826 /* Signal address valid - clear IOA Reset alert */
2827 writel(IPR_UPROCI_RESET_ALERT,
2828 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2829
2830 for (i = 0; i < length_in_words; i++) {
2831 /* Wait for IO debug acknowledge */
2832 if (ipr_wait_iodbg_ack(ioa_cfg,
2833 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2834 dev_err(&ioa_cfg->pdev->dev,
2835 "IOA dump short data transfer timeout\n");
2836 return -EIO;
2837 }
2838
2839 /* Read data from mailbox and increment destination pointer */
2840 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2841 dest++;
2842
2843 /* For all but the last word of data, signal data received */
2844 if (i < (length_in_words - 1)) {
2845 /* Signal dump data received - Clear IO debug Ack */
2846 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2847 ioa_cfg->regs.clr_interrupt_reg);
2848 }
2849 }
2850
2851 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2852 writel(IPR_UPROCI_RESET_ALERT,
2853 ioa_cfg->regs.set_uproc_interrupt_reg32);
2854
2855 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2856 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2857
2858 /* Signal dump data received - Clear IO debug Ack */
2859 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2860 ioa_cfg->regs.clr_interrupt_reg);
2861
2862 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2863 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2864 temp_pcii_reg =
2865 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2866
2867 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2868 return 0;
2869
2870 udelay(10);
2871 delay += 10;
2872 }
2873
2874 return 0;
2875 }
2876
2877 #ifdef CONFIG_SCSI_IPR_DUMP
2878 /**
2879 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2880 * @ioa_cfg: ioa config struct
2881 * @pci_address: adapter address
2882 * @length: length of data to copy
2883 *
2884 * Copy data from PCI adapter to kernel buffer.
2885 * Note: length MUST be a 4 byte multiple
2886 * Return value:
2887 * 0 on success / other on failure
2888 **/
2889 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2890 unsigned long pci_address, u32 length)
2891 {
2892 int bytes_copied = 0;
2893 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2894 __be32 *page;
2895 unsigned long lock_flags = 0;
2896 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2897
2898 if (ioa_cfg->sis64)
2899 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2900 else
2901 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2902
2903 while (bytes_copied < length &&
2904 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2905 if (ioa_dump->page_offset >= PAGE_SIZE ||
2906 ioa_dump->page_offset == 0) {
2907 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2908
2909 if (!page) {
2910 ipr_trace;
2911 return bytes_copied;
2912 }
2913
2914 ioa_dump->page_offset = 0;
2915 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2916 ioa_dump->next_page_index++;
2917 } else
2918 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2919
2920 rem_len = length - bytes_copied;
2921 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2922 cur_len = min(rem_len, rem_page_len);
2923
2924 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2925 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2926 rc = -EIO;
2927 } else {
2928 rc = ipr_get_ldump_data_section(ioa_cfg,
2929 pci_address + bytes_copied,
2930 &page[ioa_dump->page_offset / 4],
2931 (cur_len / sizeof(u32)));
2932 }
2933 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2934
2935 if (!rc) {
2936 ioa_dump->page_offset += cur_len;
2937 bytes_copied += cur_len;
2938 } else {
2939 ipr_trace;
2940 break;
2941 }
2942 schedule();
2943 }
2944
2945 return bytes_copied;
2946 }
2947
2948 /**
2949 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2950 * @hdr: dump entry header struct
2951 *
2952 * Return value:
2953 * nothing
2954 **/
2955 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2956 {
2957 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2958 hdr->num_elems = 1;
2959 hdr->offset = sizeof(*hdr);
2960 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2961 }
2962
2963 /**
2964 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2965 * @ioa_cfg: ioa config struct
2966 * @driver_dump: driver dump struct
2967 *
2968 * Return value:
2969 * nothing
2970 **/
2971 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2972 struct ipr_driver_dump *driver_dump)
2973 {
2974 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2975
2976 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2977 driver_dump->ioa_type_entry.hdr.len =
2978 sizeof(struct ipr_dump_ioa_type_entry) -
2979 sizeof(struct ipr_dump_entry_header);
2980 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2981 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2982 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2983 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2984 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2985 ucode_vpd->minor_release[1];
2986 driver_dump->hdr.num_entries++;
2987 }
2988
2989 /**
2990 * ipr_dump_version_data - Fill in the driver version in the dump.
2991 * @ioa_cfg: ioa config struct
2992 * @driver_dump: driver dump struct
2993 *
2994 * Return value:
2995 * nothing
2996 **/
2997 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2998 struct ipr_driver_dump *driver_dump)
2999 {
3000 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3001 driver_dump->version_entry.hdr.len =
3002 sizeof(struct ipr_dump_version_entry) -
3003 sizeof(struct ipr_dump_entry_header);
3004 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3005 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3006 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3007 driver_dump->hdr.num_entries++;
3008 }
3009
3010 /**
3011 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3012 * @ioa_cfg: ioa config struct
3013 * @driver_dump: driver dump struct
3014 *
3015 * Return value:
3016 * nothing
3017 **/
3018 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3019 struct ipr_driver_dump *driver_dump)
3020 {
3021 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3022 driver_dump->trace_entry.hdr.len =
3023 sizeof(struct ipr_dump_trace_entry) -
3024 sizeof(struct ipr_dump_entry_header);
3025 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3026 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3027 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3028 driver_dump->hdr.num_entries++;
3029 }
3030
3031 /**
3032 * ipr_dump_location_data - Fill in the IOA location in the dump.
3033 * @ioa_cfg: ioa config struct
3034 * @driver_dump: driver dump struct
3035 *
3036 * Return value:
3037 * nothing
3038 **/
3039 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3040 struct ipr_driver_dump *driver_dump)
3041 {
3042 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3043 driver_dump->location_entry.hdr.len =
3044 sizeof(struct ipr_dump_location_entry) -
3045 sizeof(struct ipr_dump_entry_header);
3046 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3047 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3048 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3049 driver_dump->hdr.num_entries++;
3050 }
3051
3052 /**
3053 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3054 * @ioa_cfg: ioa config struct
3055 * @dump: dump struct
3056 *
3057 * Return value:
3058 * nothing
3059 **/
3060 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3061 {
3062 unsigned long start_addr, sdt_word;
3063 unsigned long lock_flags = 0;
3064 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3065 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3066 u32 num_entries, max_num_entries, start_off, end_off;
3067 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3068 struct ipr_sdt *sdt;
3069 int valid = 1;
3070 int i;
3071
3072 ENTER;
3073
3074 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3075
3076 if (ioa_cfg->sdt_state != READ_DUMP) {
3077 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3078 return;
3079 }
3080
3081 if (ioa_cfg->sis64) {
3082 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3083 ssleep(IPR_DUMP_DELAY_SECONDS);
3084 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3085 }
3086
3087 start_addr = readl(ioa_cfg->ioa_mailbox);
3088
3089 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3090 dev_err(&ioa_cfg->pdev->dev,
3091 "Invalid dump table format: %lx\n", start_addr);
3092 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3093 return;
3094 }
3095
3096 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3097
3098 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3099
3100 /* Initialize the overall dump header */
3101 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3102 driver_dump->hdr.num_entries = 1;
3103 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3104 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3105 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3106 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3107
3108 ipr_dump_version_data(ioa_cfg, driver_dump);
3109 ipr_dump_location_data(ioa_cfg, driver_dump);
3110 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3111 ipr_dump_trace_data(ioa_cfg, driver_dump);
3112
3113 /* Update dump_header */
3114 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3115
3116 /* IOA Dump entry */
3117 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3118 ioa_dump->hdr.len = 0;
3119 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3120 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3121
3122 /* First entries in sdt are actually a list of dump addresses and
3123 lengths to gather the real dump data. sdt represents the pointer
3124 to the ioa generated dump table. Dump data will be extracted based
3125 on entries in this table */
3126 sdt = &ioa_dump->sdt;
3127
3128 if (ioa_cfg->sis64) {
3129 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3130 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3131 } else {
3132 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3133 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3134 }
3135
3136 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3137 (max_num_entries * sizeof(struct ipr_sdt_entry));
3138 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3139 bytes_to_copy / sizeof(__be32));
3140
3141 /* Smart Dump table is ready to use and the first entry is valid */
3142 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3143 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3144 dev_err(&ioa_cfg->pdev->dev,
3145 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3146 rc, be32_to_cpu(sdt->hdr.state));
3147 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3148 ioa_cfg->sdt_state = DUMP_OBTAINED;
3149 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3150 return;
3151 }
3152
3153 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3154
3155 if (num_entries > max_num_entries)
3156 num_entries = max_num_entries;
3157
3158 /* Update dump length to the actual data to be copied */
3159 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3160 if (ioa_cfg->sis64)
3161 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3162 else
3163 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3164
3165 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3166
3167 for (i = 0; i < num_entries; i++) {
3168 if (ioa_dump->hdr.len > max_dump_size) {
3169 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3170 break;
3171 }
3172
3173 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3174 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3175 if (ioa_cfg->sis64)
3176 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3177 else {
3178 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3179 end_off = be32_to_cpu(sdt->entry[i].end_token);
3180
3181 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3182 bytes_to_copy = end_off - start_off;
3183 else
3184 valid = 0;
3185 }
3186 if (valid) {
3187 if (bytes_to_copy > max_dump_size) {
3188 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3189 continue;
3190 }
3191
3192 /* Copy data from adapter to driver buffers */
3193 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3194 bytes_to_copy);
3195
3196 ioa_dump->hdr.len += bytes_copied;
3197
3198 if (bytes_copied != bytes_to_copy) {
3199 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3200 break;
3201 }
3202 }
3203 }
3204 }
3205
3206 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3207
3208 /* Update dump_header */
3209 driver_dump->hdr.len += ioa_dump->hdr.len;
3210 wmb();
3211 ioa_cfg->sdt_state = DUMP_OBTAINED;
3212 LEAVE;
3213 }
3214
3215 #else
3216 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3217 #endif
3218
3219 /**
3220 * ipr_release_dump - Free adapter dump memory
3221 * @kref: kref struct
3222 *
3223 * Return value:
3224 * nothing
3225 **/
3226 static void ipr_release_dump(struct kref *kref)
3227 {
3228 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3229 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3230 unsigned long lock_flags = 0;
3231 int i;
3232
3233 ENTER;
3234 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3235 ioa_cfg->dump = NULL;
3236 ioa_cfg->sdt_state = INACTIVE;
3237 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3238
3239 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3240 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3241
3242 vfree(dump->ioa_dump.ioa_data);
3243 kfree(dump);
3244 LEAVE;
3245 }
3246
3247 /**
3248 * ipr_worker_thread - Worker thread
3249 * @work: ioa config struct
3250 *
3251 * Called at task level from a work thread. This function takes care
3252 * of adding and removing device from the mid-layer as configuration
3253 * changes are detected by the adapter.
3254 *
3255 * Return value:
3256 * nothing
3257 **/
3258 static void ipr_worker_thread(struct work_struct *work)
3259 {
3260 unsigned long lock_flags;
3261 struct ipr_resource_entry *res;
3262 struct scsi_device *sdev;
3263 struct ipr_dump *dump;
3264 struct ipr_ioa_cfg *ioa_cfg =
3265 container_of(work, struct ipr_ioa_cfg, work_q);
3266 u8 bus, target, lun;
3267 int did_work;
3268
3269 ENTER;
3270 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3271
3272 if (ioa_cfg->sdt_state == READ_DUMP) {
3273 dump = ioa_cfg->dump;
3274 if (!dump) {
3275 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3276 return;
3277 }
3278 kref_get(&dump->kref);
3279 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3280 ipr_get_ioa_dump(ioa_cfg, dump);
3281 kref_put(&dump->kref, ipr_release_dump);
3282
3283 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3284 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3285 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3286 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3287 return;
3288 }
3289
3290 restart:
3291 do {
3292 did_work = 0;
3293 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3295 return;
3296 }
3297
3298 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3299 if (res->del_from_ml && res->sdev) {
3300 did_work = 1;
3301 sdev = res->sdev;
3302 if (!scsi_device_get(sdev)) {
3303 if (!res->add_to_ml)
3304 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3305 else
3306 res->del_from_ml = 0;
3307 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3308 scsi_remove_device(sdev);
3309 scsi_device_put(sdev);
3310 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3311 }
3312 break;
3313 }
3314 }
3315 } while (did_work);
3316
3317 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3318 if (res->add_to_ml) {
3319 bus = res->bus;
3320 target = res->target;
3321 lun = res->lun;
3322 res->add_to_ml = 0;
3323 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3324 scsi_add_device(ioa_cfg->host, bus, target, lun);
3325 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3326 goto restart;
3327 }
3328 }
3329
3330 ioa_cfg->scan_done = 1;
3331 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3332 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3333 LEAVE;
3334 }
3335
3336 #ifdef CONFIG_SCSI_IPR_TRACE
3337 /**
3338 * ipr_read_trace - Dump the adapter trace
3339 * @filp: open sysfs file
3340 * @kobj: kobject struct
3341 * @bin_attr: bin_attribute struct
3342 * @buf: buffer
3343 * @off: offset
3344 * @count: buffer size
3345 *
3346 * Return value:
3347 * number of bytes printed to buffer
3348 **/
3349 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3350 struct bin_attribute *bin_attr,
3351 char *buf, loff_t off, size_t count)
3352 {
3353 struct device *dev = container_of(kobj, struct device, kobj);
3354 struct Scsi_Host *shost = class_to_shost(dev);
3355 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3356 unsigned long lock_flags = 0;
3357 ssize_t ret;
3358
3359 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3360 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3361 IPR_TRACE_SIZE);
3362 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3363
3364 return ret;
3365 }
3366
3367 static struct bin_attribute ipr_trace_attr = {
3368 .attr = {
3369 .name = "trace",
3370 .mode = S_IRUGO,
3371 },
3372 .size = 0,
3373 .read = ipr_read_trace,
3374 };
3375 #endif
3376
3377 /**
3378 * ipr_show_fw_version - Show the firmware version
3379 * @dev: class device struct
3380 * @buf: buffer
3381 *
3382 * Return value:
3383 * number of bytes printed to buffer
3384 **/
3385 static ssize_t ipr_show_fw_version(struct device *dev,
3386 struct device_attribute *attr, char *buf)
3387 {
3388 struct Scsi_Host *shost = class_to_shost(dev);
3389 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3390 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3391 unsigned long lock_flags = 0;
3392 int len;
3393
3394 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3395 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3396 ucode_vpd->major_release, ucode_vpd->card_type,
3397 ucode_vpd->minor_release[0],
3398 ucode_vpd->minor_release[1]);
3399 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3400 return len;
3401 }
3402
3403 static struct device_attribute ipr_fw_version_attr = {
3404 .attr = {
3405 .name = "fw_version",
3406 .mode = S_IRUGO,
3407 },
3408 .show = ipr_show_fw_version,
3409 };
3410
3411 /**
3412 * ipr_show_log_level - Show the adapter's error logging level
3413 * @dev: class device struct
3414 * @buf: buffer
3415 *
3416 * Return value:
3417 * number of bytes printed to buffer
3418 **/
3419 static ssize_t ipr_show_log_level(struct device *dev,
3420 struct device_attribute *attr, char *buf)
3421 {
3422 struct Scsi_Host *shost = class_to_shost(dev);
3423 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3424 unsigned long lock_flags = 0;
3425 int len;
3426
3427 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3428 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3429 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3430 return len;
3431 }
3432
3433 /**
3434 * ipr_store_log_level - Change the adapter's error logging level
3435 * @dev: class device struct
3436 * @buf: buffer
3437 *
3438 * Return value:
3439 * number of bytes printed to buffer
3440 **/
3441 static ssize_t ipr_store_log_level(struct device *dev,
3442 struct device_attribute *attr,
3443 const char *buf, size_t count)
3444 {
3445 struct Scsi_Host *shost = class_to_shost(dev);
3446 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3447 unsigned long lock_flags = 0;
3448
3449 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3450 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3451 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3452 return strlen(buf);
3453 }
3454
3455 static struct device_attribute ipr_log_level_attr = {
3456 .attr = {
3457 .name = "log_level",
3458 .mode = S_IRUGO | S_IWUSR,
3459 },
3460 .show = ipr_show_log_level,
3461 .store = ipr_store_log_level
3462 };
3463
3464 /**
3465 * ipr_store_diagnostics - IOA Diagnostics interface
3466 * @dev: device struct
3467 * @buf: buffer
3468 * @count: buffer size
3469 *
3470 * This function will reset the adapter and wait a reasonable
3471 * amount of time for any errors that the adapter might log.
3472 *
3473 * Return value:
3474 * count on success / other on failure
3475 **/
3476 static ssize_t ipr_store_diagnostics(struct device *dev,
3477 struct device_attribute *attr,
3478 const char *buf, size_t count)
3479 {
3480 struct Scsi_Host *shost = class_to_shost(dev);
3481 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3482 unsigned long lock_flags = 0;
3483 int rc = count;
3484
3485 if (!capable(CAP_SYS_ADMIN))
3486 return -EACCES;
3487
3488 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3489 while (ioa_cfg->in_reset_reload) {
3490 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3491 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3492 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3493 }
3494
3495 ioa_cfg->errors_logged = 0;
3496 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3497
3498 if (ioa_cfg->in_reset_reload) {
3499 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3500 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3501
3502 /* Wait for a second for any errors to be logged */
3503 msleep(1000);
3504 } else {
3505 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3506 return -EIO;
3507 }
3508
3509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3510 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3511 rc = -EIO;
3512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3513
3514 return rc;
3515 }
3516
3517 static struct device_attribute ipr_diagnostics_attr = {
3518 .attr = {
3519 .name = "run_diagnostics",
3520 .mode = S_IWUSR,
3521 },
3522 .store = ipr_store_diagnostics
3523 };
3524
3525 /**
3526 * ipr_show_adapter_state - Show the adapter's state
3527 * @class_dev: device struct
3528 * @buf: buffer
3529 *
3530 * Return value:
3531 * number of bytes printed to buffer
3532 **/
3533 static ssize_t ipr_show_adapter_state(struct device *dev,
3534 struct device_attribute *attr, char *buf)
3535 {
3536 struct Scsi_Host *shost = class_to_shost(dev);
3537 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3538 unsigned long lock_flags = 0;
3539 int len;
3540
3541 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3542 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3543 len = snprintf(buf, PAGE_SIZE, "offline\n");
3544 else
3545 len = snprintf(buf, PAGE_SIZE, "online\n");
3546 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3547 return len;
3548 }
3549
3550 /**
3551 * ipr_store_adapter_state - Change adapter state
3552 * @dev: device struct
3553 * @buf: buffer
3554 * @count: buffer size
3555 *
3556 * This function will change the adapter's state.
3557 *
3558 * Return value:
3559 * count on success / other on failure
3560 **/
3561 static ssize_t ipr_store_adapter_state(struct device *dev,
3562 struct device_attribute *attr,
3563 const char *buf, size_t count)
3564 {
3565 struct Scsi_Host *shost = class_to_shost(dev);
3566 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3567 unsigned long lock_flags;
3568 int result = count, i;
3569
3570 if (!capable(CAP_SYS_ADMIN))
3571 return -EACCES;
3572
3573 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3574 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3575 !strncmp(buf, "online", 6)) {
3576 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3577 spin_lock(&ioa_cfg->hrrq[i]._lock);
3578 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3579 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3580 }
3581 wmb();
3582 ioa_cfg->reset_retries = 0;
3583 ioa_cfg->in_ioa_bringdown = 0;
3584 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3585 }
3586 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3587 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3588
3589 return result;
3590 }
3591
3592 static struct device_attribute ipr_ioa_state_attr = {
3593 .attr = {
3594 .name = "online_state",
3595 .mode = S_IRUGO | S_IWUSR,
3596 },
3597 .show = ipr_show_adapter_state,
3598 .store = ipr_store_adapter_state
3599 };
3600
3601 /**
3602 * ipr_store_reset_adapter - Reset the adapter
3603 * @dev: device struct
3604 * @buf: buffer
3605 * @count: buffer size
3606 *
3607 * This function will reset the adapter.
3608 *
3609 * Return value:
3610 * count on success / other on failure
3611 **/
3612 static ssize_t ipr_store_reset_adapter(struct device *dev,
3613 struct device_attribute *attr,
3614 const char *buf, size_t count)
3615 {
3616 struct Scsi_Host *shost = class_to_shost(dev);
3617 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3618 unsigned long lock_flags;
3619 int result = count;
3620
3621 if (!capable(CAP_SYS_ADMIN))
3622 return -EACCES;
3623
3624 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3625 if (!ioa_cfg->in_reset_reload)
3626 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3627 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3628 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3629
3630 return result;
3631 }
3632
3633 static struct device_attribute ipr_ioa_reset_attr = {
3634 .attr = {
3635 .name = "reset_host",
3636 .mode = S_IWUSR,
3637 },
3638 .store = ipr_store_reset_adapter
3639 };
3640
3641 static int ipr_iopoll(struct blk_iopoll *iop, int budget);
3642 /**
3643 * ipr_show_iopoll_weight - Show ipr polling mode
3644 * @dev: class device struct
3645 * @buf: buffer
3646 *
3647 * Return value:
3648 * number of bytes printed to buffer
3649 **/
3650 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3651 struct device_attribute *attr, char *buf)
3652 {
3653 struct Scsi_Host *shost = class_to_shost(dev);
3654 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3655 unsigned long lock_flags = 0;
3656 int len;
3657
3658 spin_lock_irqsave(shost->host_lock, lock_flags);
3659 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3660 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3661
3662 return len;
3663 }
3664
3665 /**
3666 * ipr_store_iopoll_weight - Change the adapter's polling mode
3667 * @dev: class device struct
3668 * @buf: buffer
3669 *
3670 * Return value:
3671 * number of bytes printed to buffer
3672 **/
3673 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3674 struct device_attribute *attr,
3675 const char *buf, size_t count)
3676 {
3677 struct Scsi_Host *shost = class_to_shost(dev);
3678 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3679 unsigned long user_iopoll_weight;
3680 unsigned long lock_flags = 0;
3681 int i;
3682
3683 if (!ioa_cfg->sis64) {
3684 dev_info(&ioa_cfg->pdev->dev, "blk-iopoll not supported on this adapter\n");
3685 return -EINVAL;
3686 }
3687 if (kstrtoul(buf, 10, &user_iopoll_weight))
3688 return -EINVAL;
3689
3690 if (user_iopoll_weight > 256) {
3691 dev_info(&ioa_cfg->pdev->dev, "Invalid blk-iopoll weight. It must be less than 256\n");
3692 return -EINVAL;
3693 }
3694
3695 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3696 dev_info(&ioa_cfg->pdev->dev, "Current blk-iopoll weight has the same weight\n");
3697 return strlen(buf);
3698 }
3699
3700 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3701 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3702 blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
3703 }
3704
3705 spin_lock_irqsave(shost->host_lock, lock_flags);
3706 ioa_cfg->iopoll_weight = user_iopoll_weight;
3707 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3708 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3709 blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
3710 ioa_cfg->iopoll_weight, ipr_iopoll);
3711 blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
3712 }
3713 }
3714 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3715
3716 return strlen(buf);
3717 }
3718
3719 static struct device_attribute ipr_iopoll_weight_attr = {
3720 .attr = {
3721 .name = "iopoll_weight",
3722 .mode = S_IRUGO | S_IWUSR,
3723 },
3724 .show = ipr_show_iopoll_weight,
3725 .store = ipr_store_iopoll_weight
3726 };
3727
3728 /**
3729 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3730 * @buf_len: buffer length
3731 *
3732 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3733 * list to use for microcode download
3734 *
3735 * Return value:
3736 * pointer to sglist / NULL on failure
3737 **/
3738 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3739 {
3740 int sg_size, order, bsize_elem, num_elem, i, j;
3741 struct ipr_sglist *sglist;
3742 struct scatterlist *scatterlist;
3743 struct page *page;
3744
3745 /* Get the minimum size per scatter/gather element */
3746 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3747
3748 /* Get the actual size per element */
3749 order = get_order(sg_size);
3750
3751 /* Determine the actual number of bytes per element */
3752 bsize_elem = PAGE_SIZE * (1 << order);
3753
3754 /* Determine the actual number of sg entries needed */
3755 if (buf_len % bsize_elem)
3756 num_elem = (buf_len / bsize_elem) + 1;
3757 else
3758 num_elem = buf_len / bsize_elem;
3759
3760 /* Allocate a scatter/gather list for the DMA */
3761 sglist = kzalloc(sizeof(struct ipr_sglist) +
3762 (sizeof(struct scatterlist) * (num_elem - 1)),
3763 GFP_KERNEL);
3764
3765 if (sglist == NULL) {
3766 ipr_trace;
3767 return NULL;
3768 }
3769
3770 scatterlist = sglist->scatterlist;
3771 sg_init_table(scatterlist, num_elem);
3772
3773 sglist->order = order;
3774 sglist->num_sg = num_elem;
3775
3776 /* Allocate a bunch of sg elements */
3777 for (i = 0; i < num_elem; i++) {
3778 page = alloc_pages(GFP_KERNEL, order);
3779 if (!page) {
3780 ipr_trace;
3781
3782 /* Free up what we already allocated */
3783 for (j = i - 1; j >= 0; j--)
3784 __free_pages(sg_page(&scatterlist[j]), order);
3785 kfree(sglist);
3786 return NULL;
3787 }
3788
3789 sg_set_page(&scatterlist[i], page, 0, 0);
3790 }
3791
3792 return sglist;
3793 }
3794
3795 /**
3796 * ipr_free_ucode_buffer - Frees a microcode download buffer
3797 * @p_dnld: scatter/gather list pointer
3798 *
3799 * Free a DMA'able ucode download buffer previously allocated with
3800 * ipr_alloc_ucode_buffer
3801 *
3802 * Return value:
3803 * nothing
3804 **/
3805 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3806 {
3807 int i;
3808
3809 for (i = 0; i < sglist->num_sg; i++)
3810 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3811
3812 kfree(sglist);
3813 }
3814
3815 /**
3816 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3817 * @sglist: scatter/gather list pointer
3818 * @buffer: buffer pointer
3819 * @len: buffer length
3820 *
3821 * Copy a microcode image from a user buffer into a buffer allocated by
3822 * ipr_alloc_ucode_buffer
3823 *
3824 * Return value:
3825 * 0 on success / other on failure
3826 **/
3827 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3828 u8 *buffer, u32 len)
3829 {
3830 int bsize_elem, i, result = 0;
3831 struct scatterlist *scatterlist;
3832 void *kaddr;
3833
3834 /* Determine the actual number of bytes per element */
3835 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3836
3837 scatterlist = sglist->scatterlist;
3838
3839 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3840 struct page *page = sg_page(&scatterlist[i]);
3841
3842 kaddr = kmap(page);
3843 memcpy(kaddr, buffer, bsize_elem);
3844 kunmap(page);
3845
3846 scatterlist[i].length = bsize_elem;
3847
3848 if (result != 0) {
3849 ipr_trace;
3850 return result;
3851 }
3852 }
3853
3854 if (len % bsize_elem) {
3855 struct page *page = sg_page(&scatterlist[i]);
3856
3857 kaddr = kmap(page);
3858 memcpy(kaddr, buffer, len % bsize_elem);
3859 kunmap(page);
3860
3861 scatterlist[i].length = len % bsize_elem;
3862 }
3863
3864 sglist->buffer_len = len;
3865 return result;
3866 }
3867
3868 /**
3869 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3870 * @ipr_cmd: ipr command struct
3871 * @sglist: scatter/gather list
3872 *
3873 * Builds a microcode download IOA data list (IOADL).
3874 *
3875 **/
3876 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3877 struct ipr_sglist *sglist)
3878 {
3879 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3880 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3881 struct scatterlist *scatterlist = sglist->scatterlist;
3882 int i;
3883
3884 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3885 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3886 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3887
3888 ioarcb->ioadl_len =
3889 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3890 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3891 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3892 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3893 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3894 }
3895
3896 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3897 }
3898
3899 /**
3900 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3901 * @ipr_cmd: ipr command struct
3902 * @sglist: scatter/gather list
3903 *
3904 * Builds a microcode download IOA data list (IOADL).
3905 *
3906 **/
3907 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3908 struct ipr_sglist *sglist)
3909 {
3910 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3911 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3912 struct scatterlist *scatterlist = sglist->scatterlist;
3913 int i;
3914
3915 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3916 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3917 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3918
3919 ioarcb->ioadl_len =
3920 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3921
3922 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3923 ioadl[i].flags_and_data_len =
3924 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3925 ioadl[i].address =
3926 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3927 }
3928
3929 ioadl[i-1].flags_and_data_len |=
3930 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3931 }
3932
3933 /**
3934 * ipr_update_ioa_ucode - Update IOA's microcode
3935 * @ioa_cfg: ioa config struct
3936 * @sglist: scatter/gather list
3937 *
3938 * Initiate an adapter reset to update the IOA's microcode
3939 *
3940 * Return value:
3941 * 0 on success / -EIO on failure
3942 **/
3943 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3944 struct ipr_sglist *sglist)
3945 {
3946 unsigned long lock_flags;
3947
3948 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3949 while (ioa_cfg->in_reset_reload) {
3950 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3951 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3952 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3953 }
3954
3955 if (ioa_cfg->ucode_sglist) {
3956 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3957 dev_err(&ioa_cfg->pdev->dev,
3958 "Microcode download already in progress\n");
3959 return -EIO;
3960 }
3961
3962 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
3963 sglist->scatterlist, sglist->num_sg,
3964 DMA_TO_DEVICE);
3965
3966 if (!sglist->num_dma_sg) {
3967 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3968 dev_err(&ioa_cfg->pdev->dev,
3969 "Failed to map microcode download buffer!\n");
3970 return -EIO;
3971 }
3972
3973 ioa_cfg->ucode_sglist = sglist;
3974 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3975 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3976 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3977
3978 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3979 ioa_cfg->ucode_sglist = NULL;
3980 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3981 return 0;
3982 }
3983
3984 /**
3985 * ipr_store_update_fw - Update the firmware on the adapter
3986 * @class_dev: device struct
3987 * @buf: buffer
3988 * @count: buffer size
3989 *
3990 * This function will update the firmware on the adapter.
3991 *
3992 * Return value:
3993 * count on success / other on failure
3994 **/
3995 static ssize_t ipr_store_update_fw(struct device *dev,
3996 struct device_attribute *attr,
3997 const char *buf, size_t count)
3998 {
3999 struct Scsi_Host *shost = class_to_shost(dev);
4000 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4001 struct ipr_ucode_image_header *image_hdr;
4002 const struct firmware *fw_entry;
4003 struct ipr_sglist *sglist;
4004 char fname[100];
4005 char *src;
4006 int len, result, dnld_size;
4007
4008 if (!capable(CAP_SYS_ADMIN))
4009 return -EACCES;
4010
4011 len = snprintf(fname, 99, "%s", buf);
4012 fname[len-1] = '\0';
4013
4014 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4015 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4016 return -EIO;
4017 }
4018
4019 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4020
4021 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4022 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4023 sglist = ipr_alloc_ucode_buffer(dnld_size);
4024
4025 if (!sglist) {
4026 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4027 release_firmware(fw_entry);
4028 return -ENOMEM;
4029 }
4030
4031 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4032
4033 if (result) {
4034 dev_err(&ioa_cfg->pdev->dev,
4035 "Microcode buffer copy to DMA buffer failed\n");
4036 goto out;
4037 }
4038
4039 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4040
4041 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4042
4043 if (!result)
4044 result = count;
4045 out:
4046 ipr_free_ucode_buffer(sglist);
4047 release_firmware(fw_entry);
4048 return result;
4049 }
4050
4051 static struct device_attribute ipr_update_fw_attr = {
4052 .attr = {
4053 .name = "update_fw",
4054 .mode = S_IWUSR,
4055 },
4056 .store = ipr_store_update_fw
4057 };
4058
4059 /**
4060 * ipr_show_fw_type - Show the adapter's firmware type.
4061 * @dev: class device struct
4062 * @buf: buffer
4063 *
4064 * Return value:
4065 * number of bytes printed to buffer
4066 **/
4067 static ssize_t ipr_show_fw_type(struct device *dev,
4068 struct device_attribute *attr, char *buf)
4069 {
4070 struct Scsi_Host *shost = class_to_shost(dev);
4071 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4072 unsigned long lock_flags = 0;
4073 int len;
4074
4075 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4076 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4077 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4078 return len;
4079 }
4080
4081 static struct device_attribute ipr_ioa_fw_type_attr = {
4082 .attr = {
4083 .name = "fw_type",
4084 .mode = S_IRUGO,
4085 },
4086 .show = ipr_show_fw_type
4087 };
4088
4089 static struct device_attribute *ipr_ioa_attrs[] = {
4090 &ipr_fw_version_attr,
4091 &ipr_log_level_attr,
4092 &ipr_diagnostics_attr,
4093 &ipr_ioa_state_attr,
4094 &ipr_ioa_reset_attr,
4095 &ipr_update_fw_attr,
4096 &ipr_ioa_fw_type_attr,
4097 &ipr_iopoll_weight_attr,
4098 NULL,
4099 };
4100
4101 #ifdef CONFIG_SCSI_IPR_DUMP
4102 /**
4103 * ipr_read_dump - Dump the adapter
4104 * @filp: open sysfs file
4105 * @kobj: kobject struct
4106 * @bin_attr: bin_attribute struct
4107 * @buf: buffer
4108 * @off: offset
4109 * @count: buffer size
4110 *
4111 * Return value:
4112 * number of bytes printed to buffer
4113 **/
4114 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4115 struct bin_attribute *bin_attr,
4116 char *buf, loff_t off, size_t count)
4117 {
4118 struct device *cdev = container_of(kobj, struct device, kobj);
4119 struct Scsi_Host *shost = class_to_shost(cdev);
4120 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4121 struct ipr_dump *dump;
4122 unsigned long lock_flags = 0;
4123 char *src;
4124 int len, sdt_end;
4125 size_t rc = count;
4126
4127 if (!capable(CAP_SYS_ADMIN))
4128 return -EACCES;
4129
4130 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4131 dump = ioa_cfg->dump;
4132
4133 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4134 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4135 return 0;
4136 }
4137 kref_get(&dump->kref);
4138 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4139
4140 if (off > dump->driver_dump.hdr.len) {
4141 kref_put(&dump->kref, ipr_release_dump);
4142 return 0;
4143 }
4144
4145 if (off + count > dump->driver_dump.hdr.len) {
4146 count = dump->driver_dump.hdr.len - off;
4147 rc = count;
4148 }
4149
4150 if (count && off < sizeof(dump->driver_dump)) {
4151 if (off + count > sizeof(dump->driver_dump))
4152 len = sizeof(dump->driver_dump) - off;
4153 else
4154 len = count;
4155 src = (u8 *)&dump->driver_dump + off;
4156 memcpy(buf, src, len);
4157 buf += len;
4158 off += len;
4159 count -= len;
4160 }
4161
4162 off -= sizeof(dump->driver_dump);
4163
4164 if (ioa_cfg->sis64)
4165 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4166 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4167 sizeof(struct ipr_sdt_entry));
4168 else
4169 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4170 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4171
4172 if (count && off < sdt_end) {
4173 if (off + count > sdt_end)
4174 len = sdt_end - off;
4175 else
4176 len = count;
4177 src = (u8 *)&dump->ioa_dump + off;
4178 memcpy(buf, src, len);
4179 buf += len;
4180 off += len;
4181 count -= len;
4182 }
4183
4184 off -= sdt_end;
4185
4186 while (count) {
4187 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4188 len = PAGE_ALIGN(off) - off;
4189 else
4190 len = count;
4191 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4192 src += off & ~PAGE_MASK;
4193 memcpy(buf, src, len);
4194 buf += len;
4195 off += len;
4196 count -= len;
4197 }
4198
4199 kref_put(&dump->kref, ipr_release_dump);
4200 return rc;
4201 }
4202
4203 /**
4204 * ipr_alloc_dump - Prepare for adapter dump
4205 * @ioa_cfg: ioa config struct
4206 *
4207 * Return value:
4208 * 0 on success / other on failure
4209 **/
4210 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4211 {
4212 struct ipr_dump *dump;
4213 __be32 **ioa_data;
4214 unsigned long lock_flags = 0;
4215
4216 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4217
4218 if (!dump) {
4219 ipr_err("Dump memory allocation failed\n");
4220 return -ENOMEM;
4221 }
4222
4223 if (ioa_cfg->sis64)
4224 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4225 else
4226 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4227
4228 if (!ioa_data) {
4229 ipr_err("Dump memory allocation failed\n");
4230 kfree(dump);
4231 return -ENOMEM;
4232 }
4233
4234 dump->ioa_dump.ioa_data = ioa_data;
4235
4236 kref_init(&dump->kref);
4237 dump->ioa_cfg = ioa_cfg;
4238
4239 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4240
4241 if (INACTIVE != ioa_cfg->sdt_state) {
4242 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4243 vfree(dump->ioa_dump.ioa_data);
4244 kfree(dump);
4245 return 0;
4246 }
4247
4248 ioa_cfg->dump = dump;
4249 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4250 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4251 ioa_cfg->dump_taken = 1;
4252 schedule_work(&ioa_cfg->work_q);
4253 }
4254 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4255
4256 return 0;
4257 }
4258
4259 /**
4260 * ipr_free_dump - Free adapter dump memory
4261 * @ioa_cfg: ioa config struct
4262 *
4263 * Return value:
4264 * 0 on success / other on failure
4265 **/
4266 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4267 {
4268 struct ipr_dump *dump;
4269 unsigned long lock_flags = 0;
4270
4271 ENTER;
4272
4273 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4274 dump = ioa_cfg->dump;
4275 if (!dump) {
4276 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4277 return 0;
4278 }
4279
4280 ioa_cfg->dump = NULL;
4281 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4282
4283 kref_put(&dump->kref, ipr_release_dump);
4284
4285 LEAVE;
4286 return 0;
4287 }
4288
4289 /**
4290 * ipr_write_dump - Setup dump state of adapter
4291 * @filp: open sysfs file
4292 * @kobj: kobject struct
4293 * @bin_attr: bin_attribute struct
4294 * @buf: buffer
4295 * @off: offset
4296 * @count: buffer size
4297 *
4298 * Return value:
4299 * number of bytes printed to buffer
4300 **/
4301 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4302 struct bin_attribute *bin_attr,
4303 char *buf, loff_t off, size_t count)
4304 {
4305 struct device *cdev = container_of(kobj, struct device, kobj);
4306 struct Scsi_Host *shost = class_to_shost(cdev);
4307 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4308 int rc;
4309
4310 if (!capable(CAP_SYS_ADMIN))
4311 return -EACCES;
4312
4313 if (buf[0] == '1')
4314 rc = ipr_alloc_dump(ioa_cfg);
4315 else if (buf[0] == '0')
4316 rc = ipr_free_dump(ioa_cfg);
4317 else
4318 return -EINVAL;
4319
4320 if (rc)
4321 return rc;
4322 else
4323 return count;
4324 }
4325
4326 static struct bin_attribute ipr_dump_attr = {
4327 .attr = {
4328 .name = "dump",
4329 .mode = S_IRUSR | S_IWUSR,
4330 },
4331 .size = 0,
4332 .read = ipr_read_dump,
4333 .write = ipr_write_dump
4334 };
4335 #else
4336 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4337 #endif
4338
4339 /**
4340 * ipr_change_queue_depth - Change the device's queue depth
4341 * @sdev: scsi device struct
4342 * @qdepth: depth to set
4343 * @reason: calling context
4344 *
4345 * Return value:
4346 * actual depth set
4347 **/
4348 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4349 {
4350 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4351 struct ipr_resource_entry *res;
4352 unsigned long lock_flags = 0;
4353
4354 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4355 res = (struct ipr_resource_entry *)sdev->hostdata;
4356
4357 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4358 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4359 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4360
4361 scsi_change_queue_depth(sdev, qdepth);
4362 return sdev->queue_depth;
4363 }
4364
4365 /**
4366 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4367 * @dev: device struct
4368 * @attr: device attribute structure
4369 * @buf: buffer
4370 *
4371 * Return value:
4372 * number of bytes printed to buffer
4373 **/
4374 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4375 {
4376 struct scsi_device *sdev = to_scsi_device(dev);
4377 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4378 struct ipr_resource_entry *res;
4379 unsigned long lock_flags = 0;
4380 ssize_t len = -ENXIO;
4381
4382 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4383 res = (struct ipr_resource_entry *)sdev->hostdata;
4384 if (res)
4385 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4386 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4387 return len;
4388 }
4389
4390 static struct device_attribute ipr_adapter_handle_attr = {
4391 .attr = {
4392 .name = "adapter_handle",
4393 .mode = S_IRUSR,
4394 },
4395 .show = ipr_show_adapter_handle
4396 };
4397
4398 /**
4399 * ipr_show_resource_path - Show the resource path or the resource address for
4400 * this device.
4401 * @dev: device struct
4402 * @attr: device attribute structure
4403 * @buf: buffer
4404 *
4405 * Return value:
4406 * number of bytes printed to buffer
4407 **/
4408 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4409 {
4410 struct scsi_device *sdev = to_scsi_device(dev);
4411 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4412 struct ipr_resource_entry *res;
4413 unsigned long lock_flags = 0;
4414 ssize_t len = -ENXIO;
4415 char buffer[IPR_MAX_RES_PATH_LENGTH];
4416
4417 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4418 res = (struct ipr_resource_entry *)sdev->hostdata;
4419 if (res && ioa_cfg->sis64)
4420 len = snprintf(buf, PAGE_SIZE, "%s\n",
4421 __ipr_format_res_path(res->res_path, buffer,
4422 sizeof(buffer)));
4423 else if (res)
4424 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4425 res->bus, res->target, res->lun);
4426
4427 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4428 return len;
4429 }
4430
4431 static struct device_attribute ipr_resource_path_attr = {
4432 .attr = {
4433 .name = "resource_path",
4434 .mode = S_IRUGO,
4435 },
4436 .show = ipr_show_resource_path
4437 };
4438
4439 /**
4440 * ipr_show_device_id - Show the device_id for this device.
4441 * @dev: device struct
4442 * @attr: device attribute structure
4443 * @buf: buffer
4444 *
4445 * Return value:
4446 * number of bytes printed to buffer
4447 **/
4448 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4449 {
4450 struct scsi_device *sdev = to_scsi_device(dev);
4451 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4452 struct ipr_resource_entry *res;
4453 unsigned long lock_flags = 0;
4454 ssize_t len = -ENXIO;
4455
4456 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4457 res = (struct ipr_resource_entry *)sdev->hostdata;
4458 if (res && ioa_cfg->sis64)
4459 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4460 else if (res)
4461 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4462
4463 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4464 return len;
4465 }
4466
4467 static struct device_attribute ipr_device_id_attr = {
4468 .attr = {
4469 .name = "device_id",
4470 .mode = S_IRUGO,
4471 },
4472 .show = ipr_show_device_id
4473 };
4474
4475 /**
4476 * ipr_show_resource_type - Show the resource type for this device.
4477 * @dev: device struct
4478 * @attr: device attribute structure
4479 * @buf: buffer
4480 *
4481 * Return value:
4482 * number of bytes printed to buffer
4483 **/
4484 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4485 {
4486 struct scsi_device *sdev = to_scsi_device(dev);
4487 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4488 struct ipr_resource_entry *res;
4489 unsigned long lock_flags = 0;
4490 ssize_t len = -ENXIO;
4491
4492 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4493 res = (struct ipr_resource_entry *)sdev->hostdata;
4494
4495 if (res)
4496 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4497
4498 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4499 return len;
4500 }
4501
4502 static struct device_attribute ipr_resource_type_attr = {
4503 .attr = {
4504 .name = "resource_type",
4505 .mode = S_IRUGO,
4506 },
4507 .show = ipr_show_resource_type
4508 };
4509
4510 /**
4511 * ipr_show_raw_mode - Show the adapter's raw mode
4512 * @dev: class device struct
4513 * @buf: buffer
4514 *
4515 * Return value:
4516 * number of bytes printed to buffer
4517 **/
4518 static ssize_t ipr_show_raw_mode(struct device *dev,
4519 struct device_attribute *attr, char *buf)
4520 {
4521 struct scsi_device *sdev = to_scsi_device(dev);
4522 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4523 struct ipr_resource_entry *res;
4524 unsigned long lock_flags = 0;
4525 ssize_t len;
4526
4527 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4528 res = (struct ipr_resource_entry *)sdev->hostdata;
4529 if (res)
4530 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4531 else
4532 len = -ENXIO;
4533 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4534 return len;
4535 }
4536
4537 /**
4538 * ipr_store_raw_mode - Change the adapter's raw mode
4539 * @dev: class device struct
4540 * @buf: buffer
4541 *
4542 * Return value:
4543 * number of bytes printed to buffer
4544 **/
4545 static ssize_t ipr_store_raw_mode(struct device *dev,
4546 struct device_attribute *attr,
4547 const char *buf, size_t count)
4548 {
4549 struct scsi_device *sdev = to_scsi_device(dev);
4550 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4551 struct ipr_resource_entry *res;
4552 unsigned long lock_flags = 0;
4553 ssize_t len;
4554
4555 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4556 res = (struct ipr_resource_entry *)sdev->hostdata;
4557 if (res) {
4558 if (ipr_is_af_dasd_device(res)) {
4559 res->raw_mode = simple_strtoul(buf, NULL, 10);
4560 len = strlen(buf);
4561 if (res->sdev)
4562 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4563 res->raw_mode ? "enabled" : "disabled");
4564 } else
4565 len = -EINVAL;
4566 } else
4567 len = -ENXIO;
4568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4569 return len;
4570 }
4571
4572 static struct device_attribute ipr_raw_mode_attr = {
4573 .attr = {
4574 .name = "raw_mode",
4575 .mode = S_IRUGO | S_IWUSR,
4576 },
4577 .show = ipr_show_raw_mode,
4578 .store = ipr_store_raw_mode
4579 };
4580
4581 static struct device_attribute *ipr_dev_attrs[] = {
4582 &ipr_adapter_handle_attr,
4583 &ipr_resource_path_attr,
4584 &ipr_device_id_attr,
4585 &ipr_resource_type_attr,
4586 &ipr_raw_mode_attr,
4587 NULL,
4588 };
4589
4590 /**
4591 * ipr_biosparam - Return the HSC mapping
4592 * @sdev: scsi device struct
4593 * @block_device: block device pointer
4594 * @capacity: capacity of the device
4595 * @parm: Array containing returned HSC values.
4596 *
4597 * This function generates the HSC parms that fdisk uses.
4598 * We want to make sure we return something that places partitions
4599 * on 4k boundaries for best performance with the IOA.
4600 *
4601 * Return value:
4602 * 0 on success
4603 **/
4604 static int ipr_biosparam(struct scsi_device *sdev,
4605 struct block_device *block_device,
4606 sector_t capacity, int *parm)
4607 {
4608 int heads, sectors;
4609 sector_t cylinders;
4610
4611 heads = 128;
4612 sectors = 32;
4613
4614 cylinders = capacity;
4615 sector_div(cylinders, (128 * 32));
4616
4617 /* return result */
4618 parm[0] = heads;
4619 parm[1] = sectors;
4620 parm[2] = cylinders;
4621
4622 return 0;
4623 }
4624
4625 /**
4626 * ipr_find_starget - Find target based on bus/target.
4627 * @starget: scsi target struct
4628 *
4629 * Return value:
4630 * resource entry pointer if found / NULL if not found
4631 **/
4632 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4633 {
4634 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4635 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4636 struct ipr_resource_entry *res;
4637
4638 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4639 if ((res->bus == starget->channel) &&
4640 (res->target == starget->id)) {
4641 return res;
4642 }
4643 }
4644
4645 return NULL;
4646 }
4647
4648 static struct ata_port_info sata_port_info;
4649
4650 /**
4651 * ipr_target_alloc - Prepare for commands to a SCSI target
4652 * @starget: scsi target struct
4653 *
4654 * If the device is a SATA device, this function allocates an
4655 * ATA port with libata, else it does nothing.
4656 *
4657 * Return value:
4658 * 0 on success / non-0 on failure
4659 **/
4660 static int ipr_target_alloc(struct scsi_target *starget)
4661 {
4662 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4663 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4664 struct ipr_sata_port *sata_port;
4665 struct ata_port *ap;
4666 struct ipr_resource_entry *res;
4667 unsigned long lock_flags;
4668
4669 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4670 res = ipr_find_starget(starget);
4671 starget->hostdata = NULL;
4672
4673 if (res && ipr_is_gata(res)) {
4674 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4675 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4676 if (!sata_port)
4677 return -ENOMEM;
4678
4679 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4680 if (ap) {
4681 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4682 sata_port->ioa_cfg = ioa_cfg;
4683 sata_port->ap = ap;
4684 sata_port->res = res;
4685
4686 res->sata_port = sata_port;
4687 ap->private_data = sata_port;
4688 starget->hostdata = sata_port;
4689 } else {
4690 kfree(sata_port);
4691 return -ENOMEM;
4692 }
4693 }
4694 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4695
4696 return 0;
4697 }
4698
4699 /**
4700 * ipr_target_destroy - Destroy a SCSI target
4701 * @starget: scsi target struct
4702 *
4703 * If the device was a SATA device, this function frees the libata
4704 * ATA port, else it does nothing.
4705 *
4706 **/
4707 static void ipr_target_destroy(struct scsi_target *starget)
4708 {
4709 struct ipr_sata_port *sata_port = starget->hostdata;
4710 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4711 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4712
4713 if (ioa_cfg->sis64) {
4714 if (!ipr_find_starget(starget)) {
4715 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4716 clear_bit(starget->id, ioa_cfg->array_ids);
4717 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4718 clear_bit(starget->id, ioa_cfg->vset_ids);
4719 else if (starget->channel == 0)
4720 clear_bit(starget->id, ioa_cfg->target_ids);
4721 }
4722 }
4723
4724 if (sata_port) {
4725 starget->hostdata = NULL;
4726 ata_sas_port_destroy(sata_port->ap);
4727 kfree(sata_port);
4728 }
4729 }
4730
4731 /**
4732 * ipr_find_sdev - Find device based on bus/target/lun.
4733 * @sdev: scsi device struct
4734 *
4735 * Return value:
4736 * resource entry pointer if found / NULL if not found
4737 **/
4738 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4739 {
4740 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4741 struct ipr_resource_entry *res;
4742
4743 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4744 if ((res->bus == sdev->channel) &&
4745 (res->target == sdev->id) &&
4746 (res->lun == sdev->lun))
4747 return res;
4748 }
4749
4750 return NULL;
4751 }
4752
4753 /**
4754 * ipr_slave_destroy - Unconfigure a SCSI device
4755 * @sdev: scsi device struct
4756 *
4757 * Return value:
4758 * nothing
4759 **/
4760 static void ipr_slave_destroy(struct scsi_device *sdev)
4761 {
4762 struct ipr_resource_entry *res;
4763 struct ipr_ioa_cfg *ioa_cfg;
4764 unsigned long lock_flags = 0;
4765
4766 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4767
4768 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4769 res = (struct ipr_resource_entry *) sdev->hostdata;
4770 if (res) {
4771 if (res->sata_port)
4772 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4773 sdev->hostdata = NULL;
4774 res->sdev = NULL;
4775 res->sata_port = NULL;
4776 }
4777 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4778 }
4779
4780 /**
4781 * ipr_slave_configure - Configure a SCSI device
4782 * @sdev: scsi device struct
4783 *
4784 * This function configures the specified scsi device.
4785 *
4786 * Return value:
4787 * 0 on success
4788 **/
4789 static int ipr_slave_configure(struct scsi_device *sdev)
4790 {
4791 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4792 struct ipr_resource_entry *res;
4793 struct ata_port *ap = NULL;
4794 unsigned long lock_flags = 0;
4795 char buffer[IPR_MAX_RES_PATH_LENGTH];
4796
4797 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4798 res = sdev->hostdata;
4799 if (res) {
4800 if (ipr_is_af_dasd_device(res))
4801 sdev->type = TYPE_RAID;
4802 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4803 sdev->scsi_level = 4;
4804 sdev->no_uld_attach = 1;
4805 }
4806 if (ipr_is_vset_device(res)) {
4807 sdev->scsi_level = SCSI_SPC_3;
4808 blk_queue_rq_timeout(sdev->request_queue,
4809 IPR_VSET_RW_TIMEOUT);
4810 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4811 }
4812 if (ipr_is_gata(res) && res->sata_port)
4813 ap = res->sata_port->ap;
4814 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4815
4816 if (ap) {
4817 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4818 ata_sas_slave_configure(sdev, ap);
4819 }
4820
4821 if (ioa_cfg->sis64)
4822 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4823 ipr_format_res_path(ioa_cfg,
4824 res->res_path, buffer, sizeof(buffer)));
4825 return 0;
4826 }
4827 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4828 return 0;
4829 }
4830
4831 /**
4832 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4833 * @sdev: scsi device struct
4834 *
4835 * This function initializes an ATA port so that future commands
4836 * sent through queuecommand will work.
4837 *
4838 * Return value:
4839 * 0 on success
4840 **/
4841 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4842 {
4843 struct ipr_sata_port *sata_port = NULL;
4844 int rc = -ENXIO;
4845
4846 ENTER;
4847 if (sdev->sdev_target)
4848 sata_port = sdev->sdev_target->hostdata;
4849 if (sata_port) {
4850 rc = ata_sas_port_init(sata_port->ap);
4851 if (rc == 0)
4852 rc = ata_sas_sync_probe(sata_port->ap);
4853 }
4854
4855 if (rc)
4856 ipr_slave_destroy(sdev);
4857
4858 LEAVE;
4859 return rc;
4860 }
4861
4862 /**
4863 * ipr_slave_alloc - Prepare for commands to a device.
4864 * @sdev: scsi device struct
4865 *
4866 * This function saves a pointer to the resource entry
4867 * in the scsi device struct if the device exists. We
4868 * can then use this pointer in ipr_queuecommand when
4869 * handling new commands.
4870 *
4871 * Return value:
4872 * 0 on success / -ENXIO if device does not exist
4873 **/
4874 static int ipr_slave_alloc(struct scsi_device *sdev)
4875 {
4876 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4877 struct ipr_resource_entry *res;
4878 unsigned long lock_flags;
4879 int rc = -ENXIO;
4880
4881 sdev->hostdata = NULL;
4882
4883 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4884
4885 res = ipr_find_sdev(sdev);
4886 if (res) {
4887 res->sdev = sdev;
4888 res->add_to_ml = 0;
4889 res->in_erp = 0;
4890 sdev->hostdata = res;
4891 if (!ipr_is_naca_model(res))
4892 res->needs_sync_complete = 1;
4893 rc = 0;
4894 if (ipr_is_gata(res)) {
4895 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4896 return ipr_ata_slave_alloc(sdev);
4897 }
4898 }
4899
4900 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4901
4902 return rc;
4903 }
4904
4905 /**
4906 * ipr_match_lun - Match function for specified LUN
4907 * @ipr_cmd: ipr command struct
4908 * @device: device to match (sdev)
4909 *
4910 * Returns:
4911 * 1 if command matches sdev / 0 if command does not match sdev
4912 **/
4913 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
4914 {
4915 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
4916 return 1;
4917 return 0;
4918 }
4919
4920 /**
4921 * ipr_wait_for_ops - Wait for matching commands to complete
4922 * @ipr_cmd: ipr command struct
4923 * @device: device to match (sdev)
4924 * @match: match function to use
4925 *
4926 * Returns:
4927 * SUCCESS / FAILED
4928 **/
4929 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
4930 int (*match)(struct ipr_cmnd *, void *))
4931 {
4932 struct ipr_cmnd *ipr_cmd;
4933 int wait;
4934 unsigned long flags;
4935 struct ipr_hrr_queue *hrrq;
4936 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
4937 DECLARE_COMPLETION_ONSTACK(comp);
4938
4939 ENTER;
4940 do {
4941 wait = 0;
4942
4943 for_each_hrrq(hrrq, ioa_cfg) {
4944 spin_lock_irqsave(hrrq->lock, flags);
4945 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4946 if (match(ipr_cmd, device)) {
4947 ipr_cmd->eh_comp = &comp;
4948 wait++;
4949 }
4950 }
4951 spin_unlock_irqrestore(hrrq->lock, flags);
4952 }
4953
4954 if (wait) {
4955 timeout = wait_for_completion_timeout(&comp, timeout);
4956
4957 if (!timeout) {
4958 wait = 0;
4959
4960 for_each_hrrq(hrrq, ioa_cfg) {
4961 spin_lock_irqsave(hrrq->lock, flags);
4962 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4963 if (match(ipr_cmd, device)) {
4964 ipr_cmd->eh_comp = NULL;
4965 wait++;
4966 }
4967 }
4968 spin_unlock_irqrestore(hrrq->lock, flags);
4969 }
4970
4971 if (wait)
4972 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
4973 LEAVE;
4974 return wait ? FAILED : SUCCESS;
4975 }
4976 }
4977 } while (wait);
4978
4979 LEAVE;
4980 return SUCCESS;
4981 }
4982
4983 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4984 {
4985 struct ipr_ioa_cfg *ioa_cfg;
4986 unsigned long lock_flags = 0;
4987 int rc = SUCCESS;
4988
4989 ENTER;
4990 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4991 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4992
4993 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4994 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4995 dev_err(&ioa_cfg->pdev->dev,
4996 "Adapter being reset as a result of error recovery.\n");
4997
4998 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4999 ioa_cfg->sdt_state = GET_DUMP;
5000 }
5001
5002 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5003 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5004 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5005
5006 /* If we got hit with a host reset while we were already resetting
5007 the adapter for some reason, and the reset failed. */
5008 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5009 ipr_trace;
5010 rc = FAILED;
5011 }
5012
5013 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5014 LEAVE;
5015 return rc;
5016 }
5017
5018 /**
5019 * ipr_device_reset - Reset the device
5020 * @ioa_cfg: ioa config struct
5021 * @res: resource entry struct
5022 *
5023 * This function issues a device reset to the affected device.
5024 * If the device is a SCSI device, a LUN reset will be sent
5025 * to the device first. If that does not work, a target reset
5026 * will be sent. If the device is a SATA device, a PHY reset will
5027 * be sent.
5028 *
5029 * Return value:
5030 * 0 on success / non-zero on failure
5031 **/
5032 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5033 struct ipr_resource_entry *res)
5034 {
5035 struct ipr_cmnd *ipr_cmd;
5036 struct ipr_ioarcb *ioarcb;
5037 struct ipr_cmd_pkt *cmd_pkt;
5038 struct ipr_ioarcb_ata_regs *regs;
5039 u32 ioasc;
5040
5041 ENTER;
5042 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5043 ioarcb = &ipr_cmd->ioarcb;
5044 cmd_pkt = &ioarcb->cmd_pkt;
5045
5046 if (ipr_cmd->ioa_cfg->sis64) {
5047 regs = &ipr_cmd->i.ata_ioadl.regs;
5048 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5049 } else
5050 regs = &ioarcb->u.add_data.u.regs;
5051
5052 ioarcb->res_handle = res->res_handle;
5053 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5054 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5055 if (ipr_is_gata(res)) {
5056 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5057 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5058 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5059 }
5060
5061 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5062 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5063 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5064 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5065 if (ipr_cmd->ioa_cfg->sis64)
5066 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5067 sizeof(struct ipr_ioasa_gata));
5068 else
5069 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5070 sizeof(struct ipr_ioasa_gata));
5071 }
5072
5073 LEAVE;
5074 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5075 }
5076
5077 /**
5078 * ipr_sata_reset - Reset the SATA port
5079 * @link: SATA link to reset
5080 * @classes: class of the attached device
5081 *
5082 * This function issues a SATA phy reset to the affected ATA link.
5083 *
5084 * Return value:
5085 * 0 on success / non-zero on failure
5086 **/
5087 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5088 unsigned long deadline)
5089 {
5090 struct ipr_sata_port *sata_port = link->ap->private_data;
5091 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5092 struct ipr_resource_entry *res;
5093 unsigned long lock_flags = 0;
5094 int rc = -ENXIO;
5095
5096 ENTER;
5097 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5098 while (ioa_cfg->in_reset_reload) {
5099 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5100 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5102 }
5103
5104 res = sata_port->res;
5105 if (res) {
5106 rc = ipr_device_reset(ioa_cfg, res);
5107 *classes = res->ata_class;
5108 }
5109
5110 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5111 LEAVE;
5112 return rc;
5113 }
5114
5115 /**
5116 * ipr_eh_dev_reset - Reset the device
5117 * @scsi_cmd: scsi command struct
5118 *
5119 * This function issues a device reset to the affected device.
5120 * A LUN reset will be sent to the device first. If that does
5121 * not work, a target reset will be sent.
5122 *
5123 * Return value:
5124 * SUCCESS / FAILED
5125 **/
5126 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5127 {
5128 struct ipr_cmnd *ipr_cmd;
5129 struct ipr_ioa_cfg *ioa_cfg;
5130 struct ipr_resource_entry *res;
5131 struct ata_port *ap;
5132 int rc = 0;
5133 struct ipr_hrr_queue *hrrq;
5134
5135 ENTER;
5136 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5137 res = scsi_cmd->device->hostdata;
5138
5139 if (!res)
5140 return FAILED;
5141
5142 /*
5143 * If we are currently going through reset/reload, return failed. This will force the
5144 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5145 * reset to complete
5146 */
5147 if (ioa_cfg->in_reset_reload)
5148 return FAILED;
5149 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5150 return FAILED;
5151
5152 for_each_hrrq(hrrq, ioa_cfg) {
5153 spin_lock(&hrrq->_lock);
5154 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5155 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5156 if (ipr_cmd->scsi_cmd)
5157 ipr_cmd->done = ipr_scsi_eh_done;
5158 if (ipr_cmd->qc)
5159 ipr_cmd->done = ipr_sata_eh_done;
5160 if (ipr_cmd->qc &&
5161 !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5162 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5163 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5164 }
5165 }
5166 }
5167 spin_unlock(&hrrq->_lock);
5168 }
5169 res->resetting_device = 1;
5170 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5171
5172 if (ipr_is_gata(res) && res->sata_port) {
5173 ap = res->sata_port->ap;
5174 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5175 ata_std_error_handler(ap);
5176 spin_lock_irq(scsi_cmd->device->host->host_lock);
5177
5178 for_each_hrrq(hrrq, ioa_cfg) {
5179 spin_lock(&hrrq->_lock);
5180 list_for_each_entry(ipr_cmd,
5181 &hrrq->hrrq_pending_q, queue) {
5182 if (ipr_cmd->ioarcb.res_handle ==
5183 res->res_handle) {
5184 rc = -EIO;
5185 break;
5186 }
5187 }
5188 spin_unlock(&hrrq->_lock);
5189 }
5190 } else
5191 rc = ipr_device_reset(ioa_cfg, res);
5192 res->resetting_device = 0;
5193 res->reset_occurred = 1;
5194
5195 LEAVE;
5196 return rc ? FAILED : SUCCESS;
5197 }
5198
5199 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5200 {
5201 int rc;
5202 struct ipr_ioa_cfg *ioa_cfg;
5203
5204 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5205
5206 spin_lock_irq(cmd->device->host->host_lock);
5207 rc = __ipr_eh_dev_reset(cmd);
5208 spin_unlock_irq(cmd->device->host->host_lock);
5209
5210 if (rc == SUCCESS)
5211 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5212
5213 return rc;
5214 }
5215
5216 /**
5217 * ipr_bus_reset_done - Op done function for bus reset.
5218 * @ipr_cmd: ipr command struct
5219 *
5220 * This function is the op done function for a bus reset
5221 *
5222 * Return value:
5223 * none
5224 **/
5225 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5226 {
5227 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5228 struct ipr_resource_entry *res;
5229
5230 ENTER;
5231 if (!ioa_cfg->sis64)
5232 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5233 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5234 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5235 break;
5236 }
5237 }
5238
5239 /*
5240 * If abort has not completed, indicate the reset has, else call the
5241 * abort's done function to wake the sleeping eh thread
5242 */
5243 if (ipr_cmd->sibling->sibling)
5244 ipr_cmd->sibling->sibling = NULL;
5245 else
5246 ipr_cmd->sibling->done(ipr_cmd->sibling);
5247
5248 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5249 LEAVE;
5250 }
5251
5252 /**
5253 * ipr_abort_timeout - An abort task has timed out
5254 * @ipr_cmd: ipr command struct
5255 *
5256 * This function handles when an abort task times out. If this
5257 * happens we issue a bus reset since we have resources tied
5258 * up that must be freed before returning to the midlayer.
5259 *
5260 * Return value:
5261 * none
5262 **/
5263 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5264 {
5265 struct ipr_cmnd *reset_cmd;
5266 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5267 struct ipr_cmd_pkt *cmd_pkt;
5268 unsigned long lock_flags = 0;
5269
5270 ENTER;
5271 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5272 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5273 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5274 return;
5275 }
5276
5277 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5278 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5279 ipr_cmd->sibling = reset_cmd;
5280 reset_cmd->sibling = ipr_cmd;
5281 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5282 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5283 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5284 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5285 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5286
5287 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5288 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5289 LEAVE;
5290 }
5291
5292 /**
5293 * ipr_cancel_op - Cancel specified op
5294 * @scsi_cmd: scsi command struct
5295 *
5296 * This function cancels specified op.
5297 *
5298 * Return value:
5299 * SUCCESS / FAILED
5300 **/
5301 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5302 {
5303 struct ipr_cmnd *ipr_cmd;
5304 struct ipr_ioa_cfg *ioa_cfg;
5305 struct ipr_resource_entry *res;
5306 struct ipr_cmd_pkt *cmd_pkt;
5307 u32 ioasc, int_reg;
5308 int op_found = 0;
5309 struct ipr_hrr_queue *hrrq;
5310
5311 ENTER;
5312 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5313 res = scsi_cmd->device->hostdata;
5314
5315 /* If we are currently going through reset/reload, return failed.
5316 * This will force the mid-layer to call ipr_eh_host_reset,
5317 * which will then go to sleep and wait for the reset to complete
5318 */
5319 if (ioa_cfg->in_reset_reload ||
5320 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5321 return FAILED;
5322 if (!res)
5323 return FAILED;
5324
5325 /*
5326 * If we are aborting a timed out op, chances are that the timeout was caused
5327 * by a still not detected EEH error. In such cases, reading a register will
5328 * trigger the EEH recovery infrastructure.
5329 */
5330 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5331
5332 if (!ipr_is_gscsi(res))
5333 return FAILED;
5334
5335 for_each_hrrq(hrrq, ioa_cfg) {
5336 spin_lock(&hrrq->_lock);
5337 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5338 if (ipr_cmd->scsi_cmd == scsi_cmd) {
5339 ipr_cmd->done = ipr_scsi_eh_done;
5340 op_found = 1;
5341 break;
5342 }
5343 }
5344 spin_unlock(&hrrq->_lock);
5345 }
5346
5347 if (!op_found)
5348 return SUCCESS;
5349
5350 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5351 ipr_cmd->ioarcb.res_handle = res->res_handle;
5352 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5353 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5354 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5355 ipr_cmd->u.sdev = scsi_cmd->device;
5356
5357 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5358 scsi_cmd->cmnd[0]);
5359 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5360 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5361
5362 /*
5363 * If the abort task timed out and we sent a bus reset, we will get
5364 * one the following responses to the abort
5365 */
5366 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5367 ioasc = 0;
5368 ipr_trace;
5369 }
5370
5371 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5372 if (!ipr_is_naca_model(res))
5373 res->needs_sync_complete = 1;
5374
5375 LEAVE;
5376 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5377 }
5378
5379 /**
5380 * ipr_eh_abort - Abort a single op
5381 * @scsi_cmd: scsi command struct
5382 *
5383 * Return value:
5384 * 0 if scan in progress / 1 if scan is complete
5385 **/
5386 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5387 {
5388 unsigned long lock_flags;
5389 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5390 int rc = 0;
5391
5392 spin_lock_irqsave(shost->host_lock, lock_flags);
5393 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5394 rc = 1;
5395 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5396 rc = 1;
5397 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5398 return rc;
5399 }
5400
5401 /**
5402 * ipr_eh_host_reset - Reset the host adapter
5403 * @scsi_cmd: scsi command struct
5404 *
5405 * Return value:
5406 * SUCCESS / FAILED
5407 **/
5408 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5409 {
5410 unsigned long flags;
5411 int rc;
5412 struct ipr_ioa_cfg *ioa_cfg;
5413
5414 ENTER;
5415
5416 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5417
5418 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5419 rc = ipr_cancel_op(scsi_cmd);
5420 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5421
5422 if (rc == SUCCESS)
5423 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5424 LEAVE;
5425 return rc;
5426 }
5427
5428 /**
5429 * ipr_handle_other_interrupt - Handle "other" interrupts
5430 * @ioa_cfg: ioa config struct
5431 * @int_reg: interrupt register
5432 *
5433 * Return value:
5434 * IRQ_NONE / IRQ_HANDLED
5435 **/
5436 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5437 u32 int_reg)
5438 {
5439 irqreturn_t rc = IRQ_HANDLED;
5440 u32 int_mask_reg;
5441
5442 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5443 int_reg &= ~int_mask_reg;
5444
5445 /* If an interrupt on the adapter did not occur, ignore it.
5446 * Or in the case of SIS 64, check for a stage change interrupt.
5447 */
5448 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5449 if (ioa_cfg->sis64) {
5450 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5451 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5452 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5453
5454 /* clear stage change */
5455 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5456 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5457 list_del(&ioa_cfg->reset_cmd->queue);
5458 del_timer(&ioa_cfg->reset_cmd->timer);
5459 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5460 return IRQ_HANDLED;
5461 }
5462 }
5463
5464 return IRQ_NONE;
5465 }
5466
5467 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5468 /* Mask the interrupt */
5469 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5470 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5471
5472 list_del(&ioa_cfg->reset_cmd->queue);
5473 del_timer(&ioa_cfg->reset_cmd->timer);
5474 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5475 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5476 if (ioa_cfg->clear_isr) {
5477 if (ipr_debug && printk_ratelimit())
5478 dev_err(&ioa_cfg->pdev->dev,
5479 "Spurious interrupt detected. 0x%08X\n", int_reg);
5480 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5481 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5482 return IRQ_NONE;
5483 }
5484 } else {
5485 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5486 ioa_cfg->ioa_unit_checked = 1;
5487 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5488 dev_err(&ioa_cfg->pdev->dev,
5489 "No Host RRQ. 0x%08X\n", int_reg);
5490 else
5491 dev_err(&ioa_cfg->pdev->dev,
5492 "Permanent IOA failure. 0x%08X\n", int_reg);
5493
5494 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5495 ioa_cfg->sdt_state = GET_DUMP;
5496
5497 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5498 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5499 }
5500
5501 return rc;
5502 }
5503
5504 /**
5505 * ipr_isr_eh - Interrupt service routine error handler
5506 * @ioa_cfg: ioa config struct
5507 * @msg: message to log
5508 *
5509 * Return value:
5510 * none
5511 **/
5512 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5513 {
5514 ioa_cfg->errors_logged++;
5515 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5516
5517 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5518 ioa_cfg->sdt_state = GET_DUMP;
5519
5520 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5521 }
5522
5523 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5524 struct list_head *doneq)
5525 {
5526 u32 ioasc;
5527 u16 cmd_index;
5528 struct ipr_cmnd *ipr_cmd;
5529 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5530 int num_hrrq = 0;
5531
5532 /* If interrupts are disabled, ignore the interrupt */
5533 if (!hrr_queue->allow_interrupts)
5534 return 0;
5535
5536 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5537 hrr_queue->toggle_bit) {
5538
5539 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5540 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5541 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5542
5543 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5544 cmd_index < hrr_queue->min_cmd_id)) {
5545 ipr_isr_eh(ioa_cfg,
5546 "Invalid response handle from IOA: ",
5547 cmd_index);
5548 break;
5549 }
5550
5551 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5552 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5553
5554 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5555
5556 list_move_tail(&ipr_cmd->queue, doneq);
5557
5558 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5559 hrr_queue->hrrq_curr++;
5560 } else {
5561 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5562 hrr_queue->toggle_bit ^= 1u;
5563 }
5564 num_hrrq++;
5565 if (budget > 0 && num_hrrq >= budget)
5566 break;
5567 }
5568
5569 return num_hrrq;
5570 }
5571
5572 static int ipr_iopoll(struct blk_iopoll *iop, int budget)
5573 {
5574 struct ipr_ioa_cfg *ioa_cfg;
5575 struct ipr_hrr_queue *hrrq;
5576 struct ipr_cmnd *ipr_cmd, *temp;
5577 unsigned long hrrq_flags;
5578 int completed_ops;
5579 LIST_HEAD(doneq);
5580
5581 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5582 ioa_cfg = hrrq->ioa_cfg;
5583
5584 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5585 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5586
5587 if (completed_ops < budget)
5588 blk_iopoll_complete(iop);
5589 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5590
5591 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5592 list_del(&ipr_cmd->queue);
5593 del_timer(&ipr_cmd->timer);
5594 ipr_cmd->fast_done(ipr_cmd);
5595 }
5596
5597 return completed_ops;
5598 }
5599
5600 /**
5601 * ipr_isr - Interrupt service routine
5602 * @irq: irq number
5603 * @devp: pointer to ioa config struct
5604 *
5605 * Return value:
5606 * IRQ_NONE / IRQ_HANDLED
5607 **/
5608 static irqreturn_t ipr_isr(int irq, void *devp)
5609 {
5610 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5611 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5612 unsigned long hrrq_flags = 0;
5613 u32 int_reg = 0;
5614 int num_hrrq = 0;
5615 int irq_none = 0;
5616 struct ipr_cmnd *ipr_cmd, *temp;
5617 irqreturn_t rc = IRQ_NONE;
5618 LIST_HEAD(doneq);
5619
5620 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5621 /* If interrupts are disabled, ignore the interrupt */
5622 if (!hrrq->allow_interrupts) {
5623 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5624 return IRQ_NONE;
5625 }
5626
5627 while (1) {
5628 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5629 rc = IRQ_HANDLED;
5630
5631 if (!ioa_cfg->clear_isr)
5632 break;
5633
5634 /* Clear the PCI interrupt */
5635 num_hrrq = 0;
5636 do {
5637 writel(IPR_PCII_HRRQ_UPDATED,
5638 ioa_cfg->regs.clr_interrupt_reg32);
5639 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5640 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5641 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5642
5643 } else if (rc == IRQ_NONE && irq_none == 0) {
5644 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5645 irq_none++;
5646 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5647 int_reg & IPR_PCII_HRRQ_UPDATED) {
5648 ipr_isr_eh(ioa_cfg,
5649 "Error clearing HRRQ: ", num_hrrq);
5650 rc = IRQ_HANDLED;
5651 break;
5652 } else
5653 break;
5654 }
5655
5656 if (unlikely(rc == IRQ_NONE))
5657 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5658
5659 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5660 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5661 list_del(&ipr_cmd->queue);
5662 del_timer(&ipr_cmd->timer);
5663 ipr_cmd->fast_done(ipr_cmd);
5664 }
5665 return rc;
5666 }
5667
5668 /**
5669 * ipr_isr_mhrrq - Interrupt service routine
5670 * @irq: irq number
5671 * @devp: pointer to ioa config struct
5672 *
5673 * Return value:
5674 * IRQ_NONE / IRQ_HANDLED
5675 **/
5676 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5677 {
5678 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5679 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5680 unsigned long hrrq_flags = 0;
5681 struct ipr_cmnd *ipr_cmd, *temp;
5682 irqreturn_t rc = IRQ_NONE;
5683 LIST_HEAD(doneq);
5684
5685 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5686
5687 /* If interrupts are disabled, ignore the interrupt */
5688 if (!hrrq->allow_interrupts) {
5689 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5690 return IRQ_NONE;
5691 }
5692
5693 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5694 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5695 hrrq->toggle_bit) {
5696 if (!blk_iopoll_sched_prep(&hrrq->iopoll))
5697 blk_iopoll_sched(&hrrq->iopoll);
5698 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5699 return IRQ_HANDLED;
5700 }
5701 } else {
5702 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5703 hrrq->toggle_bit)
5704
5705 if (ipr_process_hrrq(hrrq, -1, &doneq))
5706 rc = IRQ_HANDLED;
5707 }
5708
5709 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5710
5711 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5712 list_del(&ipr_cmd->queue);
5713 del_timer(&ipr_cmd->timer);
5714 ipr_cmd->fast_done(ipr_cmd);
5715 }
5716 return rc;
5717 }
5718
5719 /**
5720 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5721 * @ioa_cfg: ioa config struct
5722 * @ipr_cmd: ipr command struct
5723 *
5724 * Return value:
5725 * 0 on success / -1 on failure
5726 **/
5727 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5728 struct ipr_cmnd *ipr_cmd)
5729 {
5730 int i, nseg;
5731 struct scatterlist *sg;
5732 u32 length;
5733 u32 ioadl_flags = 0;
5734 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5735 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5736 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5737
5738 length = scsi_bufflen(scsi_cmd);
5739 if (!length)
5740 return 0;
5741
5742 nseg = scsi_dma_map(scsi_cmd);
5743 if (nseg < 0) {
5744 if (printk_ratelimit())
5745 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5746 return -1;
5747 }
5748
5749 ipr_cmd->dma_use_sg = nseg;
5750
5751 ioarcb->data_transfer_length = cpu_to_be32(length);
5752 ioarcb->ioadl_len =
5753 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5754
5755 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5756 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5757 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5758 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5759 ioadl_flags = IPR_IOADL_FLAGS_READ;
5760
5761 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5762 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5763 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5764 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5765 }
5766
5767 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5768 return 0;
5769 }
5770
5771 /**
5772 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5773 * @ioa_cfg: ioa config struct
5774 * @ipr_cmd: ipr command struct
5775 *
5776 * Return value:
5777 * 0 on success / -1 on failure
5778 **/
5779 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5780 struct ipr_cmnd *ipr_cmd)
5781 {
5782 int i, nseg;
5783 struct scatterlist *sg;
5784 u32 length;
5785 u32 ioadl_flags = 0;
5786 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5787 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5788 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5789
5790 length = scsi_bufflen(scsi_cmd);
5791 if (!length)
5792 return 0;
5793
5794 nseg = scsi_dma_map(scsi_cmd);
5795 if (nseg < 0) {
5796 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5797 return -1;
5798 }
5799
5800 ipr_cmd->dma_use_sg = nseg;
5801
5802 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5803 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5804 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5805 ioarcb->data_transfer_length = cpu_to_be32(length);
5806 ioarcb->ioadl_len =
5807 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5808 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5809 ioadl_flags = IPR_IOADL_FLAGS_READ;
5810 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5811 ioarcb->read_ioadl_len =
5812 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5813 }
5814
5815 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5816 ioadl = ioarcb->u.add_data.u.ioadl;
5817 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5818 offsetof(struct ipr_ioarcb, u.add_data));
5819 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5820 }
5821
5822 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5823 ioadl[i].flags_and_data_len =
5824 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5825 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5826 }
5827
5828 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5829 return 0;
5830 }
5831
5832 /**
5833 * ipr_erp_done - Process completion of ERP for a device
5834 * @ipr_cmd: ipr command struct
5835 *
5836 * This function copies the sense buffer into the scsi_cmd
5837 * struct and pushes the scsi_done function.
5838 *
5839 * Return value:
5840 * nothing
5841 **/
5842 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5843 {
5844 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5845 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5846 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5847
5848 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5849 scsi_cmd->result |= (DID_ERROR << 16);
5850 scmd_printk(KERN_ERR, scsi_cmd,
5851 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5852 } else {
5853 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5854 SCSI_SENSE_BUFFERSIZE);
5855 }
5856
5857 if (res) {
5858 if (!ipr_is_naca_model(res))
5859 res->needs_sync_complete = 1;
5860 res->in_erp = 0;
5861 }
5862 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5863 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5864 scsi_cmd->scsi_done(scsi_cmd);
5865 }
5866
5867 /**
5868 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5869 * @ipr_cmd: ipr command struct
5870 *
5871 * Return value:
5872 * none
5873 **/
5874 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5875 {
5876 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5877 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5878 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5879
5880 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5881 ioarcb->data_transfer_length = 0;
5882 ioarcb->read_data_transfer_length = 0;
5883 ioarcb->ioadl_len = 0;
5884 ioarcb->read_ioadl_len = 0;
5885 ioasa->hdr.ioasc = 0;
5886 ioasa->hdr.residual_data_len = 0;
5887
5888 if (ipr_cmd->ioa_cfg->sis64)
5889 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5890 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5891 else {
5892 ioarcb->write_ioadl_addr =
5893 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5894 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5895 }
5896 }
5897
5898 /**
5899 * ipr_erp_request_sense - Send request sense to a device
5900 * @ipr_cmd: ipr command struct
5901 *
5902 * This function sends a request sense to a device as a result
5903 * of a check condition.
5904 *
5905 * Return value:
5906 * nothing
5907 **/
5908 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5909 {
5910 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5911 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5912
5913 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5914 ipr_erp_done(ipr_cmd);
5915 return;
5916 }
5917
5918 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5919
5920 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5921 cmd_pkt->cdb[0] = REQUEST_SENSE;
5922 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5923 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5924 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5925 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5926
5927 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5928 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5929
5930 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5931 IPR_REQUEST_SENSE_TIMEOUT * 2);
5932 }
5933
5934 /**
5935 * ipr_erp_cancel_all - Send cancel all to a device
5936 * @ipr_cmd: ipr command struct
5937 *
5938 * This function sends a cancel all to a device to clear the
5939 * queue. If we are running TCQ on the device, QERR is set to 1,
5940 * which means all outstanding ops have been dropped on the floor.
5941 * Cancel all will return them to us.
5942 *
5943 * Return value:
5944 * nothing
5945 **/
5946 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5947 {
5948 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5949 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5950 struct ipr_cmd_pkt *cmd_pkt;
5951
5952 res->in_erp = 1;
5953
5954 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5955
5956 if (!scsi_cmd->device->simple_tags) {
5957 ipr_erp_request_sense(ipr_cmd);
5958 return;
5959 }
5960
5961 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5962 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5963 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5964
5965 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5966 IPR_CANCEL_ALL_TIMEOUT);
5967 }
5968
5969 /**
5970 * ipr_dump_ioasa - Dump contents of IOASA
5971 * @ioa_cfg: ioa config struct
5972 * @ipr_cmd: ipr command struct
5973 * @res: resource entry struct
5974 *
5975 * This function is invoked by the interrupt handler when ops
5976 * fail. It will log the IOASA if appropriate. Only called
5977 * for GPDD ops.
5978 *
5979 * Return value:
5980 * none
5981 **/
5982 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5983 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5984 {
5985 int i;
5986 u16 data_len;
5987 u32 ioasc, fd_ioasc;
5988 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5989 __be32 *ioasa_data = (__be32 *)ioasa;
5990 int error_index;
5991
5992 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5993 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5994
5995 if (0 == ioasc)
5996 return;
5997
5998 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5999 return;
6000
6001 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6002 error_index = ipr_get_error(fd_ioasc);
6003 else
6004 error_index = ipr_get_error(ioasc);
6005
6006 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6007 /* Don't log an error if the IOA already logged one */
6008 if (ioasa->hdr.ilid != 0)
6009 return;
6010
6011 if (!ipr_is_gscsi(res))
6012 return;
6013
6014 if (ipr_error_table[error_index].log_ioasa == 0)
6015 return;
6016 }
6017
6018 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6019
6020 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6021 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6022 data_len = sizeof(struct ipr_ioasa64);
6023 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6024 data_len = sizeof(struct ipr_ioasa);
6025
6026 ipr_err("IOASA Dump:\n");
6027
6028 for (i = 0; i < data_len / 4; i += 4) {
6029 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6030 be32_to_cpu(ioasa_data[i]),
6031 be32_to_cpu(ioasa_data[i+1]),
6032 be32_to_cpu(ioasa_data[i+2]),
6033 be32_to_cpu(ioasa_data[i+3]));
6034 }
6035 }
6036
6037 /**
6038 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6039 * @ioasa: IOASA
6040 * @sense_buf: sense data buffer
6041 *
6042 * Return value:
6043 * none
6044 **/
6045 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6046 {
6047 u32 failing_lba;
6048 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6049 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6050 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6051 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6052
6053 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6054
6055 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6056 return;
6057
6058 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6059
6060 if (ipr_is_vset_device(res) &&
6061 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6062 ioasa->u.vset.failing_lba_hi != 0) {
6063 sense_buf[0] = 0x72;
6064 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6065 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6066 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6067
6068 sense_buf[7] = 12;
6069 sense_buf[8] = 0;
6070 sense_buf[9] = 0x0A;
6071 sense_buf[10] = 0x80;
6072
6073 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6074
6075 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6076 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6077 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6078 sense_buf[15] = failing_lba & 0x000000ff;
6079
6080 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6081
6082 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6083 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6084 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6085 sense_buf[19] = failing_lba & 0x000000ff;
6086 } else {
6087 sense_buf[0] = 0x70;
6088 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6089 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6090 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6091
6092 /* Illegal request */
6093 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6094 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6095 sense_buf[7] = 10; /* additional length */
6096
6097 /* IOARCB was in error */
6098 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6099 sense_buf[15] = 0xC0;
6100 else /* Parameter data was invalid */
6101 sense_buf[15] = 0x80;
6102
6103 sense_buf[16] =
6104 ((IPR_FIELD_POINTER_MASK &
6105 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6106 sense_buf[17] =
6107 (IPR_FIELD_POINTER_MASK &
6108 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6109 } else {
6110 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6111 if (ipr_is_vset_device(res))
6112 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6113 else
6114 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6115
6116 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6117 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6118 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6119 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6120 sense_buf[6] = failing_lba & 0x000000ff;
6121 }
6122
6123 sense_buf[7] = 6; /* additional length */
6124 }
6125 }
6126 }
6127
6128 /**
6129 * ipr_get_autosense - Copy autosense data to sense buffer
6130 * @ipr_cmd: ipr command struct
6131 *
6132 * This function copies the autosense buffer to the buffer
6133 * in the scsi_cmd, if there is autosense available.
6134 *
6135 * Return value:
6136 * 1 if autosense was available / 0 if not
6137 **/
6138 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6139 {
6140 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6141 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6142
6143 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6144 return 0;
6145
6146 if (ipr_cmd->ioa_cfg->sis64)
6147 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6148 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6149 SCSI_SENSE_BUFFERSIZE));
6150 else
6151 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6152 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6153 SCSI_SENSE_BUFFERSIZE));
6154 return 1;
6155 }
6156
6157 /**
6158 * ipr_erp_start - Process an error response for a SCSI op
6159 * @ioa_cfg: ioa config struct
6160 * @ipr_cmd: ipr command struct
6161 *
6162 * This function determines whether or not to initiate ERP
6163 * on the affected device.
6164 *
6165 * Return value:
6166 * nothing
6167 **/
6168 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6169 struct ipr_cmnd *ipr_cmd)
6170 {
6171 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6172 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6173 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6174 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6175
6176 if (!res) {
6177 ipr_scsi_eh_done(ipr_cmd);
6178 return;
6179 }
6180
6181 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6182 ipr_gen_sense(ipr_cmd);
6183
6184 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6185
6186 switch (masked_ioasc) {
6187 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6188 if (ipr_is_naca_model(res))
6189 scsi_cmd->result |= (DID_ABORT << 16);
6190 else
6191 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6192 break;
6193 case IPR_IOASC_IR_RESOURCE_HANDLE:
6194 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6195 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6196 break;
6197 case IPR_IOASC_HW_SEL_TIMEOUT:
6198 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6199 if (!ipr_is_naca_model(res))
6200 res->needs_sync_complete = 1;
6201 break;
6202 case IPR_IOASC_SYNC_REQUIRED:
6203 if (!res->in_erp)
6204 res->needs_sync_complete = 1;
6205 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6206 break;
6207 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6208 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6209 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6210 break;
6211 case IPR_IOASC_BUS_WAS_RESET:
6212 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6213 /*
6214 * Report the bus reset and ask for a retry. The device
6215 * will give CC/UA the next command.
6216 */
6217 if (!res->resetting_device)
6218 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6219 scsi_cmd->result |= (DID_ERROR << 16);
6220 if (!ipr_is_naca_model(res))
6221 res->needs_sync_complete = 1;
6222 break;
6223 case IPR_IOASC_HW_DEV_BUS_STATUS:
6224 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6225 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6226 if (!ipr_get_autosense(ipr_cmd)) {
6227 if (!ipr_is_naca_model(res)) {
6228 ipr_erp_cancel_all(ipr_cmd);
6229 return;
6230 }
6231 }
6232 }
6233 if (!ipr_is_naca_model(res))
6234 res->needs_sync_complete = 1;
6235 break;
6236 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6237 break;
6238 case IPR_IOASC_IR_NON_OPTIMIZED:
6239 if (res->raw_mode) {
6240 res->raw_mode = 0;
6241 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6242 } else
6243 scsi_cmd->result |= (DID_ERROR << 16);
6244 break;
6245 default:
6246 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6247 scsi_cmd->result |= (DID_ERROR << 16);
6248 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6249 res->needs_sync_complete = 1;
6250 break;
6251 }
6252
6253 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6254 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6255 scsi_cmd->scsi_done(scsi_cmd);
6256 }
6257
6258 /**
6259 * ipr_scsi_done - mid-layer done function
6260 * @ipr_cmd: ipr command struct
6261 *
6262 * This function is invoked by the interrupt handler for
6263 * ops generated by the SCSI mid-layer
6264 *
6265 * Return value:
6266 * none
6267 **/
6268 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6269 {
6270 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6271 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6272 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6273 unsigned long lock_flags;
6274
6275 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6276
6277 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6278 scsi_dma_unmap(scsi_cmd);
6279
6280 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6281 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6282 scsi_cmd->scsi_done(scsi_cmd);
6283 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6284 } else {
6285 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6286 spin_lock(&ipr_cmd->hrrq->_lock);
6287 ipr_erp_start(ioa_cfg, ipr_cmd);
6288 spin_unlock(&ipr_cmd->hrrq->_lock);
6289 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6290 }
6291 }
6292
6293 /**
6294 * ipr_queuecommand - Queue a mid-layer request
6295 * @shost: scsi host struct
6296 * @scsi_cmd: scsi command struct
6297 *
6298 * This function queues a request generated by the mid-layer.
6299 *
6300 * Return value:
6301 * 0 on success
6302 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6303 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6304 **/
6305 static int ipr_queuecommand(struct Scsi_Host *shost,
6306 struct scsi_cmnd *scsi_cmd)
6307 {
6308 struct ipr_ioa_cfg *ioa_cfg;
6309 struct ipr_resource_entry *res;
6310 struct ipr_ioarcb *ioarcb;
6311 struct ipr_cmnd *ipr_cmd;
6312 unsigned long hrrq_flags, lock_flags;
6313 int rc;
6314 struct ipr_hrr_queue *hrrq;
6315 int hrrq_id;
6316
6317 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6318
6319 scsi_cmd->result = (DID_OK << 16);
6320 res = scsi_cmd->device->hostdata;
6321
6322 if (ipr_is_gata(res) && res->sata_port) {
6323 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6324 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6325 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6326 return rc;
6327 }
6328
6329 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6330 hrrq = &ioa_cfg->hrrq[hrrq_id];
6331
6332 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6333 /*
6334 * We are currently blocking all devices due to a host reset
6335 * We have told the host to stop giving us new requests, but
6336 * ERP ops don't count. FIXME
6337 */
6338 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6339 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6340 return SCSI_MLQUEUE_HOST_BUSY;
6341 }
6342
6343 /*
6344 * FIXME - Create scsi_set_host_offline interface
6345 * and the ioa_is_dead check can be removed
6346 */
6347 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6348 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6349 goto err_nodev;
6350 }
6351
6352 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6353 if (ipr_cmd == NULL) {
6354 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6355 return SCSI_MLQUEUE_HOST_BUSY;
6356 }
6357 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6358
6359 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6360 ioarcb = &ipr_cmd->ioarcb;
6361
6362 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6363 ipr_cmd->scsi_cmd = scsi_cmd;
6364 ipr_cmd->done = ipr_scsi_eh_done;
6365
6366 if (ipr_is_gscsi(res)) {
6367 if (scsi_cmd->underflow == 0)
6368 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6369
6370 if (res->reset_occurred) {
6371 res->reset_occurred = 0;
6372 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6373 }
6374 }
6375
6376 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6377 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6378
6379 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6380 if (scsi_cmd->flags & SCMD_TAGGED)
6381 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6382 else
6383 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6384 }
6385
6386 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6387 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6388 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6389 }
6390 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6391 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6392
6393 if (scsi_cmd->underflow == 0)
6394 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6395 }
6396
6397 if (ioa_cfg->sis64)
6398 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6399 else
6400 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6401
6402 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6403 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6404 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6405 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6406 if (!rc)
6407 scsi_dma_unmap(scsi_cmd);
6408 return SCSI_MLQUEUE_HOST_BUSY;
6409 }
6410
6411 if (unlikely(hrrq->ioa_is_dead)) {
6412 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6413 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6414 scsi_dma_unmap(scsi_cmd);
6415 goto err_nodev;
6416 }
6417
6418 ioarcb->res_handle = res->res_handle;
6419 if (res->needs_sync_complete) {
6420 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6421 res->needs_sync_complete = 0;
6422 }
6423 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6424 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6425 ipr_send_command(ipr_cmd);
6426 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6427 return 0;
6428
6429 err_nodev:
6430 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6431 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6432 scsi_cmd->result = (DID_NO_CONNECT << 16);
6433 scsi_cmd->scsi_done(scsi_cmd);
6434 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6435 return 0;
6436 }
6437
6438 /**
6439 * ipr_ioctl - IOCTL handler
6440 * @sdev: scsi device struct
6441 * @cmd: IOCTL cmd
6442 * @arg: IOCTL arg
6443 *
6444 * Return value:
6445 * 0 on success / other on failure
6446 **/
6447 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6448 {
6449 struct ipr_resource_entry *res;
6450
6451 res = (struct ipr_resource_entry *)sdev->hostdata;
6452 if (res && ipr_is_gata(res)) {
6453 if (cmd == HDIO_GET_IDENTITY)
6454 return -ENOTTY;
6455 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6456 }
6457
6458 return -EINVAL;
6459 }
6460
6461 /**
6462 * ipr_info - Get information about the card/driver
6463 * @scsi_host: scsi host struct
6464 *
6465 * Return value:
6466 * pointer to buffer with description string
6467 **/
6468 static const char *ipr_ioa_info(struct Scsi_Host *host)
6469 {
6470 static char buffer[512];
6471 struct ipr_ioa_cfg *ioa_cfg;
6472 unsigned long lock_flags = 0;
6473
6474 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6475
6476 spin_lock_irqsave(host->host_lock, lock_flags);
6477 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6478 spin_unlock_irqrestore(host->host_lock, lock_flags);
6479
6480 return buffer;
6481 }
6482
6483 static struct scsi_host_template driver_template = {
6484 .module = THIS_MODULE,
6485 .name = "IPR",
6486 .info = ipr_ioa_info,
6487 .ioctl = ipr_ioctl,
6488 .queuecommand = ipr_queuecommand,
6489 .eh_abort_handler = ipr_eh_abort,
6490 .eh_device_reset_handler = ipr_eh_dev_reset,
6491 .eh_host_reset_handler = ipr_eh_host_reset,
6492 .slave_alloc = ipr_slave_alloc,
6493 .slave_configure = ipr_slave_configure,
6494 .slave_destroy = ipr_slave_destroy,
6495 .scan_finished = ipr_scan_finished,
6496 .target_alloc = ipr_target_alloc,
6497 .target_destroy = ipr_target_destroy,
6498 .change_queue_depth = ipr_change_queue_depth,
6499 .bios_param = ipr_biosparam,
6500 .can_queue = IPR_MAX_COMMANDS,
6501 .this_id = -1,
6502 .sg_tablesize = IPR_MAX_SGLIST,
6503 .max_sectors = IPR_IOA_MAX_SECTORS,
6504 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6505 .use_clustering = ENABLE_CLUSTERING,
6506 .shost_attrs = ipr_ioa_attrs,
6507 .sdev_attrs = ipr_dev_attrs,
6508 .proc_name = IPR_NAME,
6509 };
6510
6511 /**
6512 * ipr_ata_phy_reset - libata phy_reset handler
6513 * @ap: ata port to reset
6514 *
6515 **/
6516 static void ipr_ata_phy_reset(struct ata_port *ap)
6517 {
6518 unsigned long flags;
6519 struct ipr_sata_port *sata_port = ap->private_data;
6520 struct ipr_resource_entry *res = sata_port->res;
6521 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6522 int rc;
6523
6524 ENTER;
6525 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6526 while (ioa_cfg->in_reset_reload) {
6527 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6528 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6529 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6530 }
6531
6532 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6533 goto out_unlock;
6534
6535 rc = ipr_device_reset(ioa_cfg, res);
6536
6537 if (rc) {
6538 ap->link.device[0].class = ATA_DEV_NONE;
6539 goto out_unlock;
6540 }
6541
6542 ap->link.device[0].class = res->ata_class;
6543 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6544 ap->link.device[0].class = ATA_DEV_NONE;
6545
6546 out_unlock:
6547 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6548 LEAVE;
6549 }
6550
6551 /**
6552 * ipr_ata_post_internal - Cleanup after an internal command
6553 * @qc: ATA queued command
6554 *
6555 * Return value:
6556 * none
6557 **/
6558 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6559 {
6560 struct ipr_sata_port *sata_port = qc->ap->private_data;
6561 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6562 struct ipr_cmnd *ipr_cmd;
6563 struct ipr_hrr_queue *hrrq;
6564 unsigned long flags;
6565
6566 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6567 while (ioa_cfg->in_reset_reload) {
6568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6569 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6570 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6571 }
6572
6573 for_each_hrrq(hrrq, ioa_cfg) {
6574 spin_lock(&hrrq->_lock);
6575 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6576 if (ipr_cmd->qc == qc) {
6577 ipr_device_reset(ioa_cfg, sata_port->res);
6578 break;
6579 }
6580 }
6581 spin_unlock(&hrrq->_lock);
6582 }
6583 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6584 }
6585
6586 /**
6587 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6588 * @regs: destination
6589 * @tf: source ATA taskfile
6590 *
6591 * Return value:
6592 * none
6593 **/
6594 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6595 struct ata_taskfile *tf)
6596 {
6597 regs->feature = tf->feature;
6598 regs->nsect = tf->nsect;
6599 regs->lbal = tf->lbal;
6600 regs->lbam = tf->lbam;
6601 regs->lbah = tf->lbah;
6602 regs->device = tf->device;
6603 regs->command = tf->command;
6604 regs->hob_feature = tf->hob_feature;
6605 regs->hob_nsect = tf->hob_nsect;
6606 regs->hob_lbal = tf->hob_lbal;
6607 regs->hob_lbam = tf->hob_lbam;
6608 regs->hob_lbah = tf->hob_lbah;
6609 regs->ctl = tf->ctl;
6610 }
6611
6612 /**
6613 * ipr_sata_done - done function for SATA commands
6614 * @ipr_cmd: ipr command struct
6615 *
6616 * This function is invoked by the interrupt handler for
6617 * ops generated by the SCSI mid-layer to SATA devices
6618 *
6619 * Return value:
6620 * none
6621 **/
6622 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6623 {
6624 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6625 struct ata_queued_cmd *qc = ipr_cmd->qc;
6626 struct ipr_sata_port *sata_port = qc->ap->private_data;
6627 struct ipr_resource_entry *res = sata_port->res;
6628 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6629
6630 spin_lock(&ipr_cmd->hrrq->_lock);
6631 if (ipr_cmd->ioa_cfg->sis64)
6632 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6633 sizeof(struct ipr_ioasa_gata));
6634 else
6635 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6636 sizeof(struct ipr_ioasa_gata));
6637 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6638
6639 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6640 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6641
6642 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6643 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6644 else
6645 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6646 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6647 spin_unlock(&ipr_cmd->hrrq->_lock);
6648 ata_qc_complete(qc);
6649 }
6650
6651 /**
6652 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6653 * @ipr_cmd: ipr command struct
6654 * @qc: ATA queued command
6655 *
6656 **/
6657 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6658 struct ata_queued_cmd *qc)
6659 {
6660 u32 ioadl_flags = 0;
6661 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6662 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6663 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6664 int len = qc->nbytes;
6665 struct scatterlist *sg;
6666 unsigned int si;
6667 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6668
6669 if (len == 0)
6670 return;
6671
6672 if (qc->dma_dir == DMA_TO_DEVICE) {
6673 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6674 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6675 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6676 ioadl_flags = IPR_IOADL_FLAGS_READ;
6677
6678 ioarcb->data_transfer_length = cpu_to_be32(len);
6679 ioarcb->ioadl_len =
6680 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6681 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6682 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6683
6684 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6685 ioadl64->flags = cpu_to_be32(ioadl_flags);
6686 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6687 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6688
6689 last_ioadl64 = ioadl64;
6690 ioadl64++;
6691 }
6692
6693 if (likely(last_ioadl64))
6694 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6695 }
6696
6697 /**
6698 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6699 * @ipr_cmd: ipr command struct
6700 * @qc: ATA queued command
6701 *
6702 **/
6703 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6704 struct ata_queued_cmd *qc)
6705 {
6706 u32 ioadl_flags = 0;
6707 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6708 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6709 struct ipr_ioadl_desc *last_ioadl = NULL;
6710 int len = qc->nbytes;
6711 struct scatterlist *sg;
6712 unsigned int si;
6713
6714 if (len == 0)
6715 return;
6716
6717 if (qc->dma_dir == DMA_TO_DEVICE) {
6718 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6719 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6720 ioarcb->data_transfer_length = cpu_to_be32(len);
6721 ioarcb->ioadl_len =
6722 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6723 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6724 ioadl_flags = IPR_IOADL_FLAGS_READ;
6725 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6726 ioarcb->read_ioadl_len =
6727 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6728 }
6729
6730 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6731 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6732 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6733
6734 last_ioadl = ioadl;
6735 ioadl++;
6736 }
6737
6738 if (likely(last_ioadl))
6739 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6740 }
6741
6742 /**
6743 * ipr_qc_defer - Get a free ipr_cmd
6744 * @qc: queued command
6745 *
6746 * Return value:
6747 * 0 if success
6748 **/
6749 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6750 {
6751 struct ata_port *ap = qc->ap;
6752 struct ipr_sata_port *sata_port = ap->private_data;
6753 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6754 struct ipr_cmnd *ipr_cmd;
6755 struct ipr_hrr_queue *hrrq;
6756 int hrrq_id;
6757
6758 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6759 hrrq = &ioa_cfg->hrrq[hrrq_id];
6760
6761 qc->lldd_task = NULL;
6762 spin_lock(&hrrq->_lock);
6763 if (unlikely(hrrq->ioa_is_dead)) {
6764 spin_unlock(&hrrq->_lock);
6765 return 0;
6766 }
6767
6768 if (unlikely(!hrrq->allow_cmds)) {
6769 spin_unlock(&hrrq->_lock);
6770 return ATA_DEFER_LINK;
6771 }
6772
6773 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6774 if (ipr_cmd == NULL) {
6775 spin_unlock(&hrrq->_lock);
6776 return ATA_DEFER_LINK;
6777 }
6778
6779 qc->lldd_task = ipr_cmd;
6780 spin_unlock(&hrrq->_lock);
6781 return 0;
6782 }
6783
6784 /**
6785 * ipr_qc_issue - Issue a SATA qc to a device
6786 * @qc: queued command
6787 *
6788 * Return value:
6789 * 0 if success
6790 **/
6791 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6792 {
6793 struct ata_port *ap = qc->ap;
6794 struct ipr_sata_port *sata_port = ap->private_data;
6795 struct ipr_resource_entry *res = sata_port->res;
6796 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6797 struct ipr_cmnd *ipr_cmd;
6798 struct ipr_ioarcb *ioarcb;
6799 struct ipr_ioarcb_ata_regs *regs;
6800
6801 if (qc->lldd_task == NULL)
6802 ipr_qc_defer(qc);
6803
6804 ipr_cmd = qc->lldd_task;
6805 if (ipr_cmd == NULL)
6806 return AC_ERR_SYSTEM;
6807
6808 qc->lldd_task = NULL;
6809 spin_lock(&ipr_cmd->hrrq->_lock);
6810 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6811 ipr_cmd->hrrq->ioa_is_dead)) {
6812 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6813 spin_unlock(&ipr_cmd->hrrq->_lock);
6814 return AC_ERR_SYSTEM;
6815 }
6816
6817 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6818 ioarcb = &ipr_cmd->ioarcb;
6819
6820 if (ioa_cfg->sis64) {
6821 regs = &ipr_cmd->i.ata_ioadl.regs;
6822 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6823 } else
6824 regs = &ioarcb->u.add_data.u.regs;
6825
6826 memset(regs, 0, sizeof(*regs));
6827 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6828
6829 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6830 ipr_cmd->qc = qc;
6831 ipr_cmd->done = ipr_sata_done;
6832 ipr_cmd->ioarcb.res_handle = res->res_handle;
6833 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6834 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6835 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6836 ipr_cmd->dma_use_sg = qc->n_elem;
6837
6838 if (ioa_cfg->sis64)
6839 ipr_build_ata_ioadl64(ipr_cmd, qc);
6840 else
6841 ipr_build_ata_ioadl(ipr_cmd, qc);
6842
6843 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6844 ipr_copy_sata_tf(regs, &qc->tf);
6845 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6846 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6847
6848 switch (qc->tf.protocol) {
6849 case ATA_PROT_NODATA:
6850 case ATA_PROT_PIO:
6851 break;
6852
6853 case ATA_PROT_DMA:
6854 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6855 break;
6856
6857 case ATAPI_PROT_PIO:
6858 case ATAPI_PROT_NODATA:
6859 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6860 break;
6861
6862 case ATAPI_PROT_DMA:
6863 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6864 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6865 break;
6866
6867 default:
6868 WARN_ON(1);
6869 spin_unlock(&ipr_cmd->hrrq->_lock);
6870 return AC_ERR_INVALID;
6871 }
6872
6873 ipr_send_command(ipr_cmd);
6874 spin_unlock(&ipr_cmd->hrrq->_lock);
6875
6876 return 0;
6877 }
6878
6879 /**
6880 * ipr_qc_fill_rtf - Read result TF
6881 * @qc: ATA queued command
6882 *
6883 * Return value:
6884 * true
6885 **/
6886 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6887 {
6888 struct ipr_sata_port *sata_port = qc->ap->private_data;
6889 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6890 struct ata_taskfile *tf = &qc->result_tf;
6891
6892 tf->feature = g->error;
6893 tf->nsect = g->nsect;
6894 tf->lbal = g->lbal;
6895 tf->lbam = g->lbam;
6896 tf->lbah = g->lbah;
6897 tf->device = g->device;
6898 tf->command = g->status;
6899 tf->hob_nsect = g->hob_nsect;
6900 tf->hob_lbal = g->hob_lbal;
6901 tf->hob_lbam = g->hob_lbam;
6902 tf->hob_lbah = g->hob_lbah;
6903
6904 return true;
6905 }
6906
6907 static struct ata_port_operations ipr_sata_ops = {
6908 .phy_reset = ipr_ata_phy_reset,
6909 .hardreset = ipr_sata_reset,
6910 .post_internal_cmd = ipr_ata_post_internal,
6911 .qc_prep = ata_noop_qc_prep,
6912 .qc_defer = ipr_qc_defer,
6913 .qc_issue = ipr_qc_issue,
6914 .qc_fill_rtf = ipr_qc_fill_rtf,
6915 .port_start = ata_sas_port_start,
6916 .port_stop = ata_sas_port_stop
6917 };
6918
6919 static struct ata_port_info sata_port_info = {
6920 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
6921 ATA_FLAG_SAS_HOST,
6922 .pio_mask = ATA_PIO4_ONLY,
6923 .mwdma_mask = ATA_MWDMA2,
6924 .udma_mask = ATA_UDMA6,
6925 .port_ops = &ipr_sata_ops
6926 };
6927
6928 #ifdef CONFIG_PPC_PSERIES
6929 static const u16 ipr_blocked_processors[] = {
6930 PVR_NORTHSTAR,
6931 PVR_PULSAR,
6932 PVR_POWER4,
6933 PVR_ICESTAR,
6934 PVR_SSTAR,
6935 PVR_POWER4p,
6936 PVR_630,
6937 PVR_630p
6938 };
6939
6940 /**
6941 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6942 * @ioa_cfg: ioa cfg struct
6943 *
6944 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6945 * certain pSeries hardware. This function determines if the given
6946 * adapter is in one of these confgurations or not.
6947 *
6948 * Return value:
6949 * 1 if adapter is not supported / 0 if adapter is supported
6950 **/
6951 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6952 {
6953 int i;
6954
6955 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6956 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6957 if (pvr_version_is(ipr_blocked_processors[i]))
6958 return 1;
6959 }
6960 }
6961 return 0;
6962 }
6963 #else
6964 #define ipr_invalid_adapter(ioa_cfg) 0
6965 #endif
6966
6967 /**
6968 * ipr_ioa_bringdown_done - IOA bring down completion.
6969 * @ipr_cmd: ipr command struct
6970 *
6971 * This function processes the completion of an adapter bring down.
6972 * It wakes any reset sleepers.
6973 *
6974 * Return value:
6975 * IPR_RC_JOB_RETURN
6976 **/
6977 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6978 {
6979 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6980 int i;
6981
6982 ENTER;
6983 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6984 ipr_trace;
6985 spin_unlock_irq(ioa_cfg->host->host_lock);
6986 scsi_unblock_requests(ioa_cfg->host);
6987 spin_lock_irq(ioa_cfg->host->host_lock);
6988 }
6989
6990 ioa_cfg->in_reset_reload = 0;
6991 ioa_cfg->reset_retries = 0;
6992 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6993 spin_lock(&ioa_cfg->hrrq[i]._lock);
6994 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6995 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6996 }
6997 wmb();
6998
6999 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7000 wake_up_all(&ioa_cfg->reset_wait_q);
7001 LEAVE;
7002
7003 return IPR_RC_JOB_RETURN;
7004 }
7005
7006 /**
7007 * ipr_ioa_reset_done - IOA reset completion.
7008 * @ipr_cmd: ipr command struct
7009 *
7010 * This function processes the completion of an adapter reset.
7011 * It schedules any necessary mid-layer add/removes and
7012 * wakes any reset sleepers.
7013 *
7014 * Return value:
7015 * IPR_RC_JOB_RETURN
7016 **/
7017 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7018 {
7019 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7020 struct ipr_resource_entry *res;
7021 struct ipr_hostrcb *hostrcb, *temp;
7022 int i = 0, j;
7023
7024 ENTER;
7025 ioa_cfg->in_reset_reload = 0;
7026 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7027 spin_lock(&ioa_cfg->hrrq[j]._lock);
7028 ioa_cfg->hrrq[j].allow_cmds = 1;
7029 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7030 }
7031 wmb();
7032 ioa_cfg->reset_cmd = NULL;
7033 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7034
7035 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7036 if (res->add_to_ml || res->del_from_ml) {
7037 ipr_trace;
7038 break;
7039 }
7040 }
7041 schedule_work(&ioa_cfg->work_q);
7042
7043 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
7044 list_del(&hostrcb->queue);
7045 if (i++ < IPR_NUM_LOG_HCAMS)
7046 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
7047 else
7048 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
7049 }
7050
7051 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7052 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7053
7054 ioa_cfg->reset_retries = 0;
7055 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7056 wake_up_all(&ioa_cfg->reset_wait_q);
7057
7058 spin_unlock(ioa_cfg->host->host_lock);
7059 scsi_unblock_requests(ioa_cfg->host);
7060 spin_lock(ioa_cfg->host->host_lock);
7061
7062 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7063 scsi_block_requests(ioa_cfg->host);
7064
7065 schedule_work(&ioa_cfg->work_q);
7066 LEAVE;
7067 return IPR_RC_JOB_RETURN;
7068 }
7069
7070 /**
7071 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7072 * @supported_dev: supported device struct
7073 * @vpids: vendor product id struct
7074 *
7075 * Return value:
7076 * none
7077 **/
7078 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7079 struct ipr_std_inq_vpids *vpids)
7080 {
7081 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7082 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7083 supported_dev->num_records = 1;
7084 supported_dev->data_length =
7085 cpu_to_be16(sizeof(struct ipr_supported_device));
7086 supported_dev->reserved = 0;
7087 }
7088
7089 /**
7090 * ipr_set_supported_devs - Send Set Supported Devices for a device
7091 * @ipr_cmd: ipr command struct
7092 *
7093 * This function sends a Set Supported Devices to the adapter
7094 *
7095 * Return value:
7096 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7097 **/
7098 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7099 {
7100 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7101 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7102 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7103 struct ipr_resource_entry *res = ipr_cmd->u.res;
7104
7105 ipr_cmd->job_step = ipr_ioa_reset_done;
7106
7107 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7108 if (!ipr_is_scsi_disk(res))
7109 continue;
7110
7111 ipr_cmd->u.res = res;
7112 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7113
7114 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7115 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7116 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7117
7118 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7119 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7120 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7121 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7122
7123 ipr_init_ioadl(ipr_cmd,
7124 ioa_cfg->vpd_cbs_dma +
7125 offsetof(struct ipr_misc_cbs, supp_dev),
7126 sizeof(struct ipr_supported_device),
7127 IPR_IOADL_FLAGS_WRITE_LAST);
7128
7129 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7130 IPR_SET_SUP_DEVICE_TIMEOUT);
7131
7132 if (!ioa_cfg->sis64)
7133 ipr_cmd->job_step = ipr_set_supported_devs;
7134 LEAVE;
7135 return IPR_RC_JOB_RETURN;
7136 }
7137
7138 LEAVE;
7139 return IPR_RC_JOB_CONTINUE;
7140 }
7141
7142 /**
7143 * ipr_get_mode_page - Locate specified mode page
7144 * @mode_pages: mode page buffer
7145 * @page_code: page code to find
7146 * @len: minimum required length for mode page
7147 *
7148 * Return value:
7149 * pointer to mode page / NULL on failure
7150 **/
7151 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7152 u32 page_code, u32 len)
7153 {
7154 struct ipr_mode_page_hdr *mode_hdr;
7155 u32 page_length;
7156 u32 length;
7157
7158 if (!mode_pages || (mode_pages->hdr.length == 0))
7159 return NULL;
7160
7161 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7162 mode_hdr = (struct ipr_mode_page_hdr *)
7163 (mode_pages->data + mode_pages->hdr.block_desc_len);
7164
7165 while (length) {
7166 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7167 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7168 return mode_hdr;
7169 break;
7170 } else {
7171 page_length = (sizeof(struct ipr_mode_page_hdr) +
7172 mode_hdr->page_length);
7173 length -= page_length;
7174 mode_hdr = (struct ipr_mode_page_hdr *)
7175 ((unsigned long)mode_hdr + page_length);
7176 }
7177 }
7178 return NULL;
7179 }
7180
7181 /**
7182 * ipr_check_term_power - Check for term power errors
7183 * @ioa_cfg: ioa config struct
7184 * @mode_pages: IOAFP mode pages buffer
7185 *
7186 * Check the IOAFP's mode page 28 for term power errors
7187 *
7188 * Return value:
7189 * nothing
7190 **/
7191 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7192 struct ipr_mode_pages *mode_pages)
7193 {
7194 int i;
7195 int entry_length;
7196 struct ipr_dev_bus_entry *bus;
7197 struct ipr_mode_page28 *mode_page;
7198
7199 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7200 sizeof(struct ipr_mode_page28));
7201
7202 entry_length = mode_page->entry_length;
7203
7204 bus = mode_page->bus;
7205
7206 for (i = 0; i < mode_page->num_entries; i++) {
7207 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7208 dev_err(&ioa_cfg->pdev->dev,
7209 "Term power is absent on scsi bus %d\n",
7210 bus->res_addr.bus);
7211 }
7212
7213 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7214 }
7215 }
7216
7217 /**
7218 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7219 * @ioa_cfg: ioa config struct
7220 *
7221 * Looks through the config table checking for SES devices. If
7222 * the SES device is in the SES table indicating a maximum SCSI
7223 * bus speed, the speed is limited for the bus.
7224 *
7225 * Return value:
7226 * none
7227 **/
7228 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7229 {
7230 u32 max_xfer_rate;
7231 int i;
7232
7233 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7234 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7235 ioa_cfg->bus_attr[i].bus_width);
7236
7237 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7238 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7239 }
7240 }
7241
7242 /**
7243 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7244 * @ioa_cfg: ioa config struct
7245 * @mode_pages: mode page 28 buffer
7246 *
7247 * Updates mode page 28 based on driver configuration
7248 *
7249 * Return value:
7250 * none
7251 **/
7252 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7253 struct ipr_mode_pages *mode_pages)
7254 {
7255 int i, entry_length;
7256 struct ipr_dev_bus_entry *bus;
7257 struct ipr_bus_attributes *bus_attr;
7258 struct ipr_mode_page28 *mode_page;
7259
7260 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7261 sizeof(struct ipr_mode_page28));
7262
7263 entry_length = mode_page->entry_length;
7264
7265 /* Loop for each device bus entry */
7266 for (i = 0, bus = mode_page->bus;
7267 i < mode_page->num_entries;
7268 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7269 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7270 dev_err(&ioa_cfg->pdev->dev,
7271 "Invalid resource address reported: 0x%08X\n",
7272 IPR_GET_PHYS_LOC(bus->res_addr));
7273 continue;
7274 }
7275
7276 bus_attr = &ioa_cfg->bus_attr[i];
7277 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7278 bus->bus_width = bus_attr->bus_width;
7279 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7280 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7281 if (bus_attr->qas_enabled)
7282 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7283 else
7284 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7285 }
7286 }
7287
7288 /**
7289 * ipr_build_mode_select - Build a mode select command
7290 * @ipr_cmd: ipr command struct
7291 * @res_handle: resource handle to send command to
7292 * @parm: Byte 2 of Mode Sense command
7293 * @dma_addr: DMA buffer address
7294 * @xfer_len: data transfer length
7295 *
7296 * Return value:
7297 * none
7298 **/
7299 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7300 __be32 res_handle, u8 parm,
7301 dma_addr_t dma_addr, u8 xfer_len)
7302 {
7303 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7304
7305 ioarcb->res_handle = res_handle;
7306 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7307 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7308 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7309 ioarcb->cmd_pkt.cdb[1] = parm;
7310 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7311
7312 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7313 }
7314
7315 /**
7316 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7317 * @ipr_cmd: ipr command struct
7318 *
7319 * This function sets up the SCSI bus attributes and sends
7320 * a Mode Select for Page 28 to activate them.
7321 *
7322 * Return value:
7323 * IPR_RC_JOB_RETURN
7324 **/
7325 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7326 {
7327 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7328 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7329 int length;
7330
7331 ENTER;
7332 ipr_scsi_bus_speed_limit(ioa_cfg);
7333 ipr_check_term_power(ioa_cfg, mode_pages);
7334 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7335 length = mode_pages->hdr.length + 1;
7336 mode_pages->hdr.length = 0;
7337
7338 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7339 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7340 length);
7341
7342 ipr_cmd->job_step = ipr_set_supported_devs;
7343 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7344 struct ipr_resource_entry, queue);
7345 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7346
7347 LEAVE;
7348 return IPR_RC_JOB_RETURN;
7349 }
7350
7351 /**
7352 * ipr_build_mode_sense - Builds a mode sense command
7353 * @ipr_cmd: ipr command struct
7354 * @res: resource entry struct
7355 * @parm: Byte 2 of mode sense command
7356 * @dma_addr: DMA address of mode sense buffer
7357 * @xfer_len: Size of DMA buffer
7358 *
7359 * Return value:
7360 * none
7361 **/
7362 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7363 __be32 res_handle,
7364 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7365 {
7366 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7367
7368 ioarcb->res_handle = res_handle;
7369 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7370 ioarcb->cmd_pkt.cdb[2] = parm;
7371 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7372 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7373
7374 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7375 }
7376
7377 /**
7378 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7379 * @ipr_cmd: ipr command struct
7380 *
7381 * This function handles the failure of an IOA bringup command.
7382 *
7383 * Return value:
7384 * IPR_RC_JOB_RETURN
7385 **/
7386 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7387 {
7388 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7389 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7390
7391 dev_err(&ioa_cfg->pdev->dev,
7392 "0x%02X failed with IOASC: 0x%08X\n",
7393 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7394
7395 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7396 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7397 return IPR_RC_JOB_RETURN;
7398 }
7399
7400 /**
7401 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7402 * @ipr_cmd: ipr command struct
7403 *
7404 * This function handles the failure of a Mode Sense to the IOAFP.
7405 * Some adapters do not handle all mode pages.
7406 *
7407 * Return value:
7408 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7409 **/
7410 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7411 {
7412 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7413 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7414
7415 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7416 ipr_cmd->job_step = ipr_set_supported_devs;
7417 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7418 struct ipr_resource_entry, queue);
7419 return IPR_RC_JOB_CONTINUE;
7420 }
7421
7422 return ipr_reset_cmd_failed(ipr_cmd);
7423 }
7424
7425 /**
7426 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7427 * @ipr_cmd: ipr command struct
7428 *
7429 * This function send a Page 28 mode sense to the IOA to
7430 * retrieve SCSI bus attributes.
7431 *
7432 * Return value:
7433 * IPR_RC_JOB_RETURN
7434 **/
7435 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7436 {
7437 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7438
7439 ENTER;
7440 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7441 0x28, ioa_cfg->vpd_cbs_dma +
7442 offsetof(struct ipr_misc_cbs, mode_pages),
7443 sizeof(struct ipr_mode_pages));
7444
7445 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7446 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7447
7448 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7449
7450 LEAVE;
7451 return IPR_RC_JOB_RETURN;
7452 }
7453
7454 /**
7455 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7456 * @ipr_cmd: ipr command struct
7457 *
7458 * This function enables dual IOA RAID support if possible.
7459 *
7460 * Return value:
7461 * IPR_RC_JOB_RETURN
7462 **/
7463 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7464 {
7465 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7466 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7467 struct ipr_mode_page24 *mode_page;
7468 int length;
7469
7470 ENTER;
7471 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7472 sizeof(struct ipr_mode_page24));
7473
7474 if (mode_page)
7475 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7476
7477 length = mode_pages->hdr.length + 1;
7478 mode_pages->hdr.length = 0;
7479
7480 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7481 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7482 length);
7483
7484 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7485 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7486
7487 LEAVE;
7488 return IPR_RC_JOB_RETURN;
7489 }
7490
7491 /**
7492 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7493 * @ipr_cmd: ipr command struct
7494 *
7495 * This function handles the failure of a Mode Sense to the IOAFP.
7496 * Some adapters do not handle all mode pages.
7497 *
7498 * Return value:
7499 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7500 **/
7501 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7502 {
7503 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7504
7505 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7506 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7507 return IPR_RC_JOB_CONTINUE;
7508 }
7509
7510 return ipr_reset_cmd_failed(ipr_cmd);
7511 }
7512
7513 /**
7514 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7515 * @ipr_cmd: ipr command struct
7516 *
7517 * This function send a mode sense to the IOA to retrieve
7518 * the IOA Advanced Function Control mode page.
7519 *
7520 * Return value:
7521 * IPR_RC_JOB_RETURN
7522 **/
7523 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7524 {
7525 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7526
7527 ENTER;
7528 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7529 0x24, ioa_cfg->vpd_cbs_dma +
7530 offsetof(struct ipr_misc_cbs, mode_pages),
7531 sizeof(struct ipr_mode_pages));
7532
7533 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7534 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7535
7536 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7537
7538 LEAVE;
7539 return IPR_RC_JOB_RETURN;
7540 }
7541
7542 /**
7543 * ipr_init_res_table - Initialize the resource table
7544 * @ipr_cmd: ipr command struct
7545 *
7546 * This function looks through the existing resource table, comparing
7547 * it with the config table. This function will take care of old/new
7548 * devices and schedule adding/removing them from the mid-layer
7549 * as appropriate.
7550 *
7551 * Return value:
7552 * IPR_RC_JOB_CONTINUE
7553 **/
7554 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7555 {
7556 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7557 struct ipr_resource_entry *res, *temp;
7558 struct ipr_config_table_entry_wrapper cfgtew;
7559 int entries, found, flag, i;
7560 LIST_HEAD(old_res);
7561
7562 ENTER;
7563 if (ioa_cfg->sis64)
7564 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7565 else
7566 flag = ioa_cfg->u.cfg_table->hdr.flags;
7567
7568 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7569 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7570
7571 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7572 list_move_tail(&res->queue, &old_res);
7573
7574 if (ioa_cfg->sis64)
7575 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7576 else
7577 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7578
7579 for (i = 0; i < entries; i++) {
7580 if (ioa_cfg->sis64)
7581 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7582 else
7583 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7584 found = 0;
7585
7586 list_for_each_entry_safe(res, temp, &old_res, queue) {
7587 if (ipr_is_same_device(res, &cfgtew)) {
7588 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7589 found = 1;
7590 break;
7591 }
7592 }
7593
7594 if (!found) {
7595 if (list_empty(&ioa_cfg->free_res_q)) {
7596 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7597 break;
7598 }
7599
7600 found = 1;
7601 res = list_entry(ioa_cfg->free_res_q.next,
7602 struct ipr_resource_entry, queue);
7603 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7604 ipr_init_res_entry(res, &cfgtew);
7605 res->add_to_ml = 1;
7606 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7607 res->sdev->allow_restart = 1;
7608
7609 if (found)
7610 ipr_update_res_entry(res, &cfgtew);
7611 }
7612
7613 list_for_each_entry_safe(res, temp, &old_res, queue) {
7614 if (res->sdev) {
7615 res->del_from_ml = 1;
7616 res->res_handle = IPR_INVALID_RES_HANDLE;
7617 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7618 }
7619 }
7620
7621 list_for_each_entry_safe(res, temp, &old_res, queue) {
7622 ipr_clear_res_target(res);
7623 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7624 }
7625
7626 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7627 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7628 else
7629 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7630
7631 LEAVE;
7632 return IPR_RC_JOB_CONTINUE;
7633 }
7634
7635 /**
7636 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7637 * @ipr_cmd: ipr command struct
7638 *
7639 * This function sends a Query IOA Configuration command
7640 * to the adapter to retrieve the IOA configuration table.
7641 *
7642 * Return value:
7643 * IPR_RC_JOB_RETURN
7644 **/
7645 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7646 {
7647 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7648 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7649 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7650 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7651
7652 ENTER;
7653 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7654 ioa_cfg->dual_raid = 1;
7655 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7656 ucode_vpd->major_release, ucode_vpd->card_type,
7657 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7658 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7659 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7660
7661 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7662 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7663 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7664 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7665
7666 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7667 IPR_IOADL_FLAGS_READ_LAST);
7668
7669 ipr_cmd->job_step = ipr_init_res_table;
7670
7671 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7672
7673 LEAVE;
7674 return IPR_RC_JOB_RETURN;
7675 }
7676
7677 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7678 {
7679 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7680
7681 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7682 return IPR_RC_JOB_CONTINUE;
7683
7684 return ipr_reset_cmd_failed(ipr_cmd);
7685 }
7686
7687 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7688 __be32 res_handle, u8 sa_code)
7689 {
7690 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7691
7692 ioarcb->res_handle = res_handle;
7693 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7694 ioarcb->cmd_pkt.cdb[1] = sa_code;
7695 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7696 }
7697
7698 /**
7699 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7700 * action
7701 *
7702 * Return value:
7703 * none
7704 **/
7705 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7706 {
7707 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7708 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7709 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7710
7711 ENTER;
7712
7713 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7714
7715 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7716 ipr_build_ioa_service_action(ipr_cmd,
7717 cpu_to_be32(IPR_IOA_RES_HANDLE),
7718 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7719
7720 ioarcb->cmd_pkt.cdb[2] = 0x40;
7721
7722 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7723 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7724 IPR_SET_SUP_DEVICE_TIMEOUT);
7725
7726 LEAVE;
7727 return IPR_RC_JOB_RETURN;
7728 }
7729
7730 LEAVE;
7731 return IPR_RC_JOB_CONTINUE;
7732 }
7733
7734 /**
7735 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7736 * @ipr_cmd: ipr command struct
7737 *
7738 * This utility function sends an inquiry to the adapter.
7739 *
7740 * Return value:
7741 * none
7742 **/
7743 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7744 dma_addr_t dma_addr, u8 xfer_len)
7745 {
7746 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7747
7748 ENTER;
7749 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7750 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7751
7752 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7753 ioarcb->cmd_pkt.cdb[1] = flags;
7754 ioarcb->cmd_pkt.cdb[2] = page;
7755 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7756
7757 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7758
7759 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7760 LEAVE;
7761 }
7762
7763 /**
7764 * ipr_inquiry_page_supported - Is the given inquiry page supported
7765 * @page0: inquiry page 0 buffer
7766 * @page: page code.
7767 *
7768 * This function determines if the specified inquiry page is supported.
7769 *
7770 * Return value:
7771 * 1 if page is supported / 0 if not
7772 **/
7773 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7774 {
7775 int i;
7776
7777 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7778 if (page0->page[i] == page)
7779 return 1;
7780
7781 return 0;
7782 }
7783
7784 /**
7785 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7786 * @ipr_cmd: ipr command struct
7787 *
7788 * This function sends a Page 0xC4 inquiry to the adapter
7789 * to retrieve software VPD information.
7790 *
7791 * Return value:
7792 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7793 **/
7794 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7795 {
7796 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7797 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7798 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7799
7800 ENTER;
7801 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
7802 memset(pageC4, 0, sizeof(*pageC4));
7803
7804 if (ipr_inquiry_page_supported(page0, 0xC4)) {
7805 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7806 (ioa_cfg->vpd_cbs_dma
7807 + offsetof(struct ipr_misc_cbs,
7808 pageC4_data)),
7809 sizeof(struct ipr_inquiry_pageC4));
7810 return IPR_RC_JOB_RETURN;
7811 }
7812
7813 LEAVE;
7814 return IPR_RC_JOB_CONTINUE;
7815 }
7816
7817 /**
7818 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7819 * @ipr_cmd: ipr command struct
7820 *
7821 * This function sends a Page 0xD0 inquiry to the adapter
7822 * to retrieve adapter capabilities.
7823 *
7824 * Return value:
7825 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7826 **/
7827 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7828 {
7829 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7830 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7831 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7832
7833 ENTER;
7834 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7835 memset(cap, 0, sizeof(*cap));
7836
7837 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7838 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7839 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7840 sizeof(struct ipr_inquiry_cap));
7841 return IPR_RC_JOB_RETURN;
7842 }
7843
7844 LEAVE;
7845 return IPR_RC_JOB_CONTINUE;
7846 }
7847
7848 /**
7849 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7850 * @ipr_cmd: ipr command struct
7851 *
7852 * This function sends a Page 3 inquiry to the adapter
7853 * to retrieve software VPD information.
7854 *
7855 * Return value:
7856 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7857 **/
7858 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7859 {
7860 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7861
7862 ENTER;
7863
7864 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7865
7866 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7867 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7868 sizeof(struct ipr_inquiry_page3));
7869
7870 LEAVE;
7871 return IPR_RC_JOB_RETURN;
7872 }
7873
7874 /**
7875 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7876 * @ipr_cmd: ipr command struct
7877 *
7878 * This function sends a Page 0 inquiry to the adapter
7879 * to retrieve supported inquiry pages.
7880 *
7881 * Return value:
7882 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7883 **/
7884 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7885 {
7886 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7887 char type[5];
7888
7889 ENTER;
7890
7891 /* Grab the type out of the VPD and store it away */
7892 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7893 type[4] = '\0';
7894 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7895
7896 if (ipr_invalid_adapter(ioa_cfg)) {
7897 dev_err(&ioa_cfg->pdev->dev,
7898 "Adapter not supported in this hardware configuration.\n");
7899
7900 if (!ipr_testmode) {
7901 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7902 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7903 list_add_tail(&ipr_cmd->queue,
7904 &ioa_cfg->hrrq->hrrq_free_q);
7905 return IPR_RC_JOB_RETURN;
7906 }
7907 }
7908
7909 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7910
7911 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7912 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7913 sizeof(struct ipr_inquiry_page0));
7914
7915 LEAVE;
7916 return IPR_RC_JOB_RETURN;
7917 }
7918
7919 /**
7920 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7921 * @ipr_cmd: ipr command struct
7922 *
7923 * This function sends a standard inquiry to the adapter.
7924 *
7925 * Return value:
7926 * IPR_RC_JOB_RETURN
7927 **/
7928 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7929 {
7930 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7931
7932 ENTER;
7933 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7934
7935 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7936 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7937 sizeof(struct ipr_ioa_vpd));
7938
7939 LEAVE;
7940 return IPR_RC_JOB_RETURN;
7941 }
7942
7943 /**
7944 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7945 * @ipr_cmd: ipr command struct
7946 *
7947 * This function send an Identify Host Request Response Queue
7948 * command to establish the HRRQ with the adapter.
7949 *
7950 * Return value:
7951 * IPR_RC_JOB_RETURN
7952 **/
7953 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7954 {
7955 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7956 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7957 struct ipr_hrr_queue *hrrq;
7958
7959 ENTER;
7960 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7961 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7962
7963 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7964 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7965
7966 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7967 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7968
7969 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7970 if (ioa_cfg->sis64)
7971 ioarcb->cmd_pkt.cdb[1] = 0x1;
7972
7973 if (ioa_cfg->nvectors == 1)
7974 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7975 else
7976 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7977
7978 ioarcb->cmd_pkt.cdb[2] =
7979 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7980 ioarcb->cmd_pkt.cdb[3] =
7981 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7982 ioarcb->cmd_pkt.cdb[4] =
7983 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7984 ioarcb->cmd_pkt.cdb[5] =
7985 ((u64) hrrq->host_rrq_dma) & 0xff;
7986 ioarcb->cmd_pkt.cdb[7] =
7987 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7988 ioarcb->cmd_pkt.cdb[8] =
7989 (sizeof(u32) * hrrq->size) & 0xff;
7990
7991 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7992 ioarcb->cmd_pkt.cdb[9] =
7993 ioa_cfg->identify_hrrq_index;
7994
7995 if (ioa_cfg->sis64) {
7996 ioarcb->cmd_pkt.cdb[10] =
7997 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
7998 ioarcb->cmd_pkt.cdb[11] =
7999 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8000 ioarcb->cmd_pkt.cdb[12] =
8001 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8002 ioarcb->cmd_pkt.cdb[13] =
8003 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8004 }
8005
8006 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8007 ioarcb->cmd_pkt.cdb[14] =
8008 ioa_cfg->identify_hrrq_index;
8009
8010 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8011 IPR_INTERNAL_TIMEOUT);
8012
8013 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8014 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8015
8016 LEAVE;
8017 return IPR_RC_JOB_RETURN;
8018 }
8019
8020 LEAVE;
8021 return IPR_RC_JOB_CONTINUE;
8022 }
8023
8024 /**
8025 * ipr_reset_timer_done - Adapter reset timer function
8026 * @ipr_cmd: ipr command struct
8027 *
8028 * Description: This function is used in adapter reset processing
8029 * for timing events. If the reset_cmd pointer in the IOA
8030 * config struct is not this adapter's we are doing nested
8031 * resets and fail_all_ops will take care of freeing the
8032 * command block.
8033 *
8034 * Return value:
8035 * none
8036 **/
8037 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
8038 {
8039 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8040 unsigned long lock_flags = 0;
8041
8042 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8043
8044 if (ioa_cfg->reset_cmd == ipr_cmd) {
8045 list_del(&ipr_cmd->queue);
8046 ipr_cmd->done(ipr_cmd);
8047 }
8048
8049 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8050 }
8051
8052 /**
8053 * ipr_reset_start_timer - Start a timer for adapter reset job
8054 * @ipr_cmd: ipr command struct
8055 * @timeout: timeout value
8056 *
8057 * Description: This function is used in adapter reset processing
8058 * for timing events. If the reset_cmd pointer in the IOA
8059 * config struct is not this adapter's we are doing nested
8060 * resets and fail_all_ops will take care of freeing the
8061 * command block.
8062 *
8063 * Return value:
8064 * none
8065 **/
8066 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8067 unsigned long timeout)
8068 {
8069
8070 ENTER;
8071 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8072 ipr_cmd->done = ipr_reset_ioa_job;
8073
8074 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8075 ipr_cmd->timer.expires = jiffies + timeout;
8076 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8077 add_timer(&ipr_cmd->timer);
8078 }
8079
8080 /**
8081 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8082 * @ioa_cfg: ioa cfg struct
8083 *
8084 * Return value:
8085 * nothing
8086 **/
8087 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8088 {
8089 struct ipr_hrr_queue *hrrq;
8090
8091 for_each_hrrq(hrrq, ioa_cfg) {
8092 spin_lock(&hrrq->_lock);
8093 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8094
8095 /* Initialize Host RRQ pointers */
8096 hrrq->hrrq_start = hrrq->host_rrq;
8097 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8098 hrrq->hrrq_curr = hrrq->hrrq_start;
8099 hrrq->toggle_bit = 1;
8100 spin_unlock(&hrrq->_lock);
8101 }
8102 wmb();
8103
8104 ioa_cfg->identify_hrrq_index = 0;
8105 if (ioa_cfg->hrrq_num == 1)
8106 atomic_set(&ioa_cfg->hrrq_index, 0);
8107 else
8108 atomic_set(&ioa_cfg->hrrq_index, 1);
8109
8110 /* Zero out config table */
8111 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8112 }
8113
8114 /**
8115 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8116 * @ipr_cmd: ipr command struct
8117 *
8118 * Return value:
8119 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8120 **/
8121 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8122 {
8123 unsigned long stage, stage_time;
8124 u32 feedback;
8125 volatile u32 int_reg;
8126 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8127 u64 maskval = 0;
8128
8129 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8130 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8131 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8132
8133 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8134
8135 /* sanity check the stage_time value */
8136 if (stage_time == 0)
8137 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8138 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8139 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8140 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8141 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8142
8143 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8144 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8145 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8146 stage_time = ioa_cfg->transop_timeout;
8147 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8148 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8149 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8150 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8151 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8152 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8153 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8154 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8155 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8156 return IPR_RC_JOB_CONTINUE;
8157 }
8158 }
8159
8160 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8161 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8162 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8163 ipr_cmd->done = ipr_reset_ioa_job;
8164 add_timer(&ipr_cmd->timer);
8165
8166 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8167
8168 return IPR_RC_JOB_RETURN;
8169 }
8170
8171 /**
8172 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8173 * @ipr_cmd: ipr command struct
8174 *
8175 * This function reinitializes some control blocks and
8176 * enables destructive diagnostics on the adapter.
8177 *
8178 * Return value:
8179 * IPR_RC_JOB_RETURN
8180 **/
8181 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8182 {
8183 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8184 volatile u32 int_reg;
8185 volatile u64 maskval;
8186 int i;
8187
8188 ENTER;
8189 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8190 ipr_init_ioa_mem(ioa_cfg);
8191
8192 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8193 spin_lock(&ioa_cfg->hrrq[i]._lock);
8194 ioa_cfg->hrrq[i].allow_interrupts = 1;
8195 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8196 }
8197 wmb();
8198 if (ioa_cfg->sis64) {
8199 /* Set the adapter to the correct endian mode. */
8200 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8201 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8202 }
8203
8204 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8205
8206 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8207 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8208 ioa_cfg->regs.clr_interrupt_mask_reg32);
8209 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8210 return IPR_RC_JOB_CONTINUE;
8211 }
8212
8213 /* Enable destructive diagnostics on IOA */
8214 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8215
8216 if (ioa_cfg->sis64) {
8217 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8218 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8219 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8220 } else
8221 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8222
8223 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8224
8225 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8226
8227 if (ioa_cfg->sis64) {
8228 ipr_cmd->job_step = ipr_reset_next_stage;
8229 return IPR_RC_JOB_CONTINUE;
8230 }
8231
8232 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8233 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8234 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8235 ipr_cmd->done = ipr_reset_ioa_job;
8236 add_timer(&ipr_cmd->timer);
8237 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8238
8239 LEAVE;
8240 return IPR_RC_JOB_RETURN;
8241 }
8242
8243 /**
8244 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8245 * @ipr_cmd: ipr command struct
8246 *
8247 * This function is invoked when an adapter dump has run out
8248 * of processing time.
8249 *
8250 * Return value:
8251 * IPR_RC_JOB_CONTINUE
8252 **/
8253 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8254 {
8255 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8256
8257 if (ioa_cfg->sdt_state == GET_DUMP)
8258 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8259 else if (ioa_cfg->sdt_state == READ_DUMP)
8260 ioa_cfg->sdt_state = ABORT_DUMP;
8261
8262 ioa_cfg->dump_timeout = 1;
8263 ipr_cmd->job_step = ipr_reset_alert;
8264
8265 return IPR_RC_JOB_CONTINUE;
8266 }
8267
8268 /**
8269 * ipr_unit_check_no_data - Log a unit check/no data error log
8270 * @ioa_cfg: ioa config struct
8271 *
8272 * Logs an error indicating the adapter unit checked, but for some
8273 * reason, we were unable to fetch the unit check buffer.
8274 *
8275 * Return value:
8276 * nothing
8277 **/
8278 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8279 {
8280 ioa_cfg->errors_logged++;
8281 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8282 }
8283
8284 /**
8285 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8286 * @ioa_cfg: ioa config struct
8287 *
8288 * Fetches the unit check buffer from the adapter by clocking the data
8289 * through the mailbox register.
8290 *
8291 * Return value:
8292 * nothing
8293 **/
8294 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8295 {
8296 unsigned long mailbox;
8297 struct ipr_hostrcb *hostrcb;
8298 struct ipr_uc_sdt sdt;
8299 int rc, length;
8300 u32 ioasc;
8301
8302 mailbox = readl(ioa_cfg->ioa_mailbox);
8303
8304 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8305 ipr_unit_check_no_data(ioa_cfg);
8306 return;
8307 }
8308
8309 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8310 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8311 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8312
8313 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8314 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8315 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8316 ipr_unit_check_no_data(ioa_cfg);
8317 return;
8318 }
8319
8320 /* Find length of the first sdt entry (UC buffer) */
8321 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8322 length = be32_to_cpu(sdt.entry[0].end_token);
8323 else
8324 length = (be32_to_cpu(sdt.entry[0].end_token) -
8325 be32_to_cpu(sdt.entry[0].start_token)) &
8326 IPR_FMT2_MBX_ADDR_MASK;
8327
8328 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8329 struct ipr_hostrcb, queue);
8330 list_del(&hostrcb->queue);
8331 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8332
8333 rc = ipr_get_ldump_data_section(ioa_cfg,
8334 be32_to_cpu(sdt.entry[0].start_token),
8335 (__be32 *)&hostrcb->hcam,
8336 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8337
8338 if (!rc) {
8339 ipr_handle_log_data(ioa_cfg, hostrcb);
8340 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8341 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8342 ioa_cfg->sdt_state == GET_DUMP)
8343 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8344 } else
8345 ipr_unit_check_no_data(ioa_cfg);
8346
8347 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8348 }
8349
8350 /**
8351 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8352 * @ipr_cmd: ipr command struct
8353 *
8354 * Description: This function will call to get the unit check buffer.
8355 *
8356 * Return value:
8357 * IPR_RC_JOB_RETURN
8358 **/
8359 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8360 {
8361 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8362
8363 ENTER;
8364 ioa_cfg->ioa_unit_checked = 0;
8365 ipr_get_unit_check_buffer(ioa_cfg);
8366 ipr_cmd->job_step = ipr_reset_alert;
8367 ipr_reset_start_timer(ipr_cmd, 0);
8368
8369 LEAVE;
8370 return IPR_RC_JOB_RETURN;
8371 }
8372
8373 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8374 {
8375 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8376
8377 ENTER;
8378
8379 if (ioa_cfg->sdt_state != GET_DUMP)
8380 return IPR_RC_JOB_RETURN;
8381
8382 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8383 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8384 IPR_PCII_MAILBOX_STABLE)) {
8385
8386 if (!ipr_cmd->u.time_left)
8387 dev_err(&ioa_cfg->pdev->dev,
8388 "Timed out waiting for Mailbox register.\n");
8389
8390 ioa_cfg->sdt_state = READ_DUMP;
8391 ioa_cfg->dump_timeout = 0;
8392 if (ioa_cfg->sis64)
8393 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8394 else
8395 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8396 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8397 schedule_work(&ioa_cfg->work_q);
8398
8399 } else {
8400 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8401 ipr_reset_start_timer(ipr_cmd,
8402 IPR_CHECK_FOR_RESET_TIMEOUT);
8403 }
8404
8405 LEAVE;
8406 return IPR_RC_JOB_RETURN;
8407 }
8408
8409 /**
8410 * ipr_reset_restore_cfg_space - Restore PCI config space.
8411 * @ipr_cmd: ipr command struct
8412 *
8413 * Description: This function restores the saved PCI config space of
8414 * the adapter, fails all outstanding ops back to the callers, and
8415 * fetches the dump/unit check if applicable to this reset.
8416 *
8417 * Return value:
8418 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8419 **/
8420 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8421 {
8422 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8423 u32 int_reg;
8424
8425 ENTER;
8426 ioa_cfg->pdev->state_saved = true;
8427 pci_restore_state(ioa_cfg->pdev);
8428
8429 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8430 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8431 return IPR_RC_JOB_CONTINUE;
8432 }
8433
8434 ipr_fail_all_ops(ioa_cfg);
8435
8436 if (ioa_cfg->sis64) {
8437 /* Set the adapter to the correct endian mode. */
8438 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8439 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8440 }
8441
8442 if (ioa_cfg->ioa_unit_checked) {
8443 if (ioa_cfg->sis64) {
8444 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8445 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8446 return IPR_RC_JOB_RETURN;
8447 } else {
8448 ioa_cfg->ioa_unit_checked = 0;
8449 ipr_get_unit_check_buffer(ioa_cfg);
8450 ipr_cmd->job_step = ipr_reset_alert;
8451 ipr_reset_start_timer(ipr_cmd, 0);
8452 return IPR_RC_JOB_RETURN;
8453 }
8454 }
8455
8456 if (ioa_cfg->in_ioa_bringdown) {
8457 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8458 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8459 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8460 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8461 } else {
8462 ipr_cmd->job_step = ipr_reset_enable_ioa;
8463 }
8464
8465 LEAVE;
8466 return IPR_RC_JOB_CONTINUE;
8467 }
8468
8469 /**
8470 * ipr_reset_bist_done - BIST has completed on the adapter.
8471 * @ipr_cmd: ipr command struct
8472 *
8473 * Description: Unblock config space and resume the reset process.
8474 *
8475 * Return value:
8476 * IPR_RC_JOB_CONTINUE
8477 **/
8478 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8479 {
8480 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8481
8482 ENTER;
8483 if (ioa_cfg->cfg_locked)
8484 pci_cfg_access_unlock(ioa_cfg->pdev);
8485 ioa_cfg->cfg_locked = 0;
8486 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8487 LEAVE;
8488 return IPR_RC_JOB_CONTINUE;
8489 }
8490
8491 /**
8492 * ipr_reset_start_bist - Run BIST on the adapter.
8493 * @ipr_cmd: ipr command struct
8494 *
8495 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8496 *
8497 * Return value:
8498 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8499 **/
8500 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8501 {
8502 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8503 int rc = PCIBIOS_SUCCESSFUL;
8504
8505 ENTER;
8506 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8507 writel(IPR_UPROCI_SIS64_START_BIST,
8508 ioa_cfg->regs.set_uproc_interrupt_reg32);
8509 else
8510 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8511
8512 if (rc == PCIBIOS_SUCCESSFUL) {
8513 ipr_cmd->job_step = ipr_reset_bist_done;
8514 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8515 rc = IPR_RC_JOB_RETURN;
8516 } else {
8517 if (ioa_cfg->cfg_locked)
8518 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8519 ioa_cfg->cfg_locked = 0;
8520 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8521 rc = IPR_RC_JOB_CONTINUE;
8522 }
8523
8524 LEAVE;
8525 return rc;
8526 }
8527
8528 /**
8529 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8530 * @ipr_cmd: ipr command struct
8531 *
8532 * Description: This clears PCI reset to the adapter and delays two seconds.
8533 *
8534 * Return value:
8535 * IPR_RC_JOB_RETURN
8536 **/
8537 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8538 {
8539 ENTER;
8540 ipr_cmd->job_step = ipr_reset_bist_done;
8541 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8542 LEAVE;
8543 return IPR_RC_JOB_RETURN;
8544 }
8545
8546 /**
8547 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8548 * @work: work struct
8549 *
8550 * Description: This pulses warm reset to a slot.
8551 *
8552 **/
8553 static void ipr_reset_reset_work(struct work_struct *work)
8554 {
8555 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8556 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8557 struct pci_dev *pdev = ioa_cfg->pdev;
8558 unsigned long lock_flags = 0;
8559
8560 ENTER;
8561 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8562 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8563 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8564
8565 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8566 if (ioa_cfg->reset_cmd == ipr_cmd)
8567 ipr_reset_ioa_job(ipr_cmd);
8568 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8569 LEAVE;
8570 }
8571
8572 /**
8573 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8574 * @ipr_cmd: ipr command struct
8575 *
8576 * Description: This asserts PCI reset to the adapter.
8577 *
8578 * Return value:
8579 * IPR_RC_JOB_RETURN
8580 **/
8581 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8582 {
8583 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8584
8585 ENTER;
8586 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8587 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8588 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8589 LEAVE;
8590 return IPR_RC_JOB_RETURN;
8591 }
8592
8593 /**
8594 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8595 * @ipr_cmd: ipr command struct
8596 *
8597 * Description: This attempts to block config access to the IOA.
8598 *
8599 * Return value:
8600 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8601 **/
8602 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8603 {
8604 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8605 int rc = IPR_RC_JOB_CONTINUE;
8606
8607 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8608 ioa_cfg->cfg_locked = 1;
8609 ipr_cmd->job_step = ioa_cfg->reset;
8610 } else {
8611 if (ipr_cmd->u.time_left) {
8612 rc = IPR_RC_JOB_RETURN;
8613 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8614 ipr_reset_start_timer(ipr_cmd,
8615 IPR_CHECK_FOR_RESET_TIMEOUT);
8616 } else {
8617 ipr_cmd->job_step = ioa_cfg->reset;
8618 dev_err(&ioa_cfg->pdev->dev,
8619 "Timed out waiting to lock config access. Resetting anyway.\n");
8620 }
8621 }
8622
8623 return rc;
8624 }
8625
8626 /**
8627 * ipr_reset_block_config_access - Block config access to the IOA
8628 * @ipr_cmd: ipr command struct
8629 *
8630 * Description: This attempts to block config access to the IOA
8631 *
8632 * Return value:
8633 * IPR_RC_JOB_CONTINUE
8634 **/
8635 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8636 {
8637 ipr_cmd->ioa_cfg->cfg_locked = 0;
8638 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8639 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8640 return IPR_RC_JOB_CONTINUE;
8641 }
8642
8643 /**
8644 * ipr_reset_allowed - Query whether or not IOA can be reset
8645 * @ioa_cfg: ioa config struct
8646 *
8647 * Return value:
8648 * 0 if reset not allowed / non-zero if reset is allowed
8649 **/
8650 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8651 {
8652 volatile u32 temp_reg;
8653
8654 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8655 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8656 }
8657
8658 /**
8659 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8660 * @ipr_cmd: ipr command struct
8661 *
8662 * Description: This function waits for adapter permission to run BIST,
8663 * then runs BIST. If the adapter does not give permission after a
8664 * reasonable time, we will reset the adapter anyway. The impact of
8665 * resetting the adapter without warning the adapter is the risk of
8666 * losing the persistent error log on the adapter. If the adapter is
8667 * reset while it is writing to the flash on the adapter, the flash
8668 * segment will have bad ECC and be zeroed.
8669 *
8670 * Return value:
8671 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8672 **/
8673 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8674 {
8675 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8676 int rc = IPR_RC_JOB_RETURN;
8677
8678 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8679 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8680 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8681 } else {
8682 ipr_cmd->job_step = ipr_reset_block_config_access;
8683 rc = IPR_RC_JOB_CONTINUE;
8684 }
8685
8686 return rc;
8687 }
8688
8689 /**
8690 * ipr_reset_alert - Alert the adapter of a pending reset
8691 * @ipr_cmd: ipr command struct
8692 *
8693 * Description: This function alerts the adapter that it will be reset.
8694 * If memory space is not currently enabled, proceed directly
8695 * to running BIST on the adapter. The timer must always be started
8696 * so we guarantee we do not run BIST from ipr_isr.
8697 *
8698 * Return value:
8699 * IPR_RC_JOB_RETURN
8700 **/
8701 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8702 {
8703 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8704 u16 cmd_reg;
8705 int rc;
8706
8707 ENTER;
8708 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8709
8710 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8711 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8712 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8713 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8714 } else {
8715 ipr_cmd->job_step = ipr_reset_block_config_access;
8716 }
8717
8718 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8719 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8720
8721 LEAVE;
8722 return IPR_RC_JOB_RETURN;
8723 }
8724
8725 /**
8726 * ipr_reset_quiesce_done - Complete IOA disconnect
8727 * @ipr_cmd: ipr command struct
8728 *
8729 * Description: Freeze the adapter to complete quiesce processing
8730 *
8731 * Return value:
8732 * IPR_RC_JOB_CONTINUE
8733 **/
8734 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8735 {
8736 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8737
8738 ENTER;
8739 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8740 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8741 LEAVE;
8742 return IPR_RC_JOB_CONTINUE;
8743 }
8744
8745 /**
8746 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8747 * @ipr_cmd: ipr command struct
8748 *
8749 * Description: Ensure nothing is outstanding to the IOA and
8750 * proceed with IOA disconnect. Otherwise reset the IOA.
8751 *
8752 * Return value:
8753 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8754 **/
8755 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8756 {
8757 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8758 struct ipr_cmnd *loop_cmd;
8759 struct ipr_hrr_queue *hrrq;
8760 int rc = IPR_RC_JOB_CONTINUE;
8761 int count = 0;
8762
8763 ENTER;
8764 ipr_cmd->job_step = ipr_reset_quiesce_done;
8765
8766 for_each_hrrq(hrrq, ioa_cfg) {
8767 spin_lock(&hrrq->_lock);
8768 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8769 count++;
8770 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8771 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8772 rc = IPR_RC_JOB_RETURN;
8773 break;
8774 }
8775 spin_unlock(&hrrq->_lock);
8776
8777 if (count)
8778 break;
8779 }
8780
8781 LEAVE;
8782 return rc;
8783 }
8784
8785 /**
8786 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8787 * @ipr_cmd: ipr command struct
8788 *
8789 * Description: Cancel any oustanding HCAMs to the IOA.
8790 *
8791 * Return value:
8792 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8793 **/
8794 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8795 {
8796 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8797 int rc = IPR_RC_JOB_CONTINUE;
8798 struct ipr_cmd_pkt *cmd_pkt;
8799 struct ipr_cmnd *hcam_cmd;
8800 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8801
8802 ENTER;
8803 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8804
8805 if (!hrrq->ioa_is_dead) {
8806 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8807 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8808 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8809 continue;
8810
8811 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8812 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8813 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8814 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8815 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8816 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8817 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8818 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8819 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8820 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8821 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8822 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8823 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8824 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8825
8826 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8827 IPR_CANCEL_TIMEOUT);
8828
8829 rc = IPR_RC_JOB_RETURN;
8830 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8831 break;
8832 }
8833 }
8834 } else
8835 ipr_cmd->job_step = ipr_reset_alert;
8836
8837 LEAVE;
8838 return rc;
8839 }
8840
8841 /**
8842 * ipr_reset_ucode_download_done - Microcode download completion
8843 * @ipr_cmd: ipr command struct
8844 *
8845 * Description: This function unmaps the microcode download buffer.
8846 *
8847 * Return value:
8848 * IPR_RC_JOB_CONTINUE
8849 **/
8850 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8851 {
8852 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8853 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8854
8855 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8856 sglist->num_sg, DMA_TO_DEVICE);
8857
8858 ipr_cmd->job_step = ipr_reset_alert;
8859 return IPR_RC_JOB_CONTINUE;
8860 }
8861
8862 /**
8863 * ipr_reset_ucode_download - Download microcode to the adapter
8864 * @ipr_cmd: ipr command struct
8865 *
8866 * Description: This function checks to see if it there is microcode
8867 * to download to the adapter. If there is, a download is performed.
8868 *
8869 * Return value:
8870 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8871 **/
8872 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8873 {
8874 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8875 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8876
8877 ENTER;
8878 ipr_cmd->job_step = ipr_reset_alert;
8879
8880 if (!sglist)
8881 return IPR_RC_JOB_CONTINUE;
8882
8883 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8884 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8885 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8886 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8887 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8888 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8889 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8890
8891 if (ioa_cfg->sis64)
8892 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8893 else
8894 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8895 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8896
8897 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8898 IPR_WRITE_BUFFER_TIMEOUT);
8899
8900 LEAVE;
8901 return IPR_RC_JOB_RETURN;
8902 }
8903
8904 /**
8905 * ipr_reset_shutdown_ioa - Shutdown the adapter
8906 * @ipr_cmd: ipr command struct
8907 *
8908 * Description: This function issues an adapter shutdown of the
8909 * specified type to the specified adapter as part of the
8910 * adapter reset job.
8911 *
8912 * Return value:
8913 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8914 **/
8915 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8916 {
8917 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8918 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8919 unsigned long timeout;
8920 int rc = IPR_RC_JOB_CONTINUE;
8921
8922 ENTER;
8923 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8924 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8925 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8926 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8927 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8928 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8929 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8930 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8931
8932 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8933 timeout = IPR_SHUTDOWN_TIMEOUT;
8934 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8935 timeout = IPR_INTERNAL_TIMEOUT;
8936 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8937 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8938 else
8939 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8940
8941 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8942
8943 rc = IPR_RC_JOB_RETURN;
8944 ipr_cmd->job_step = ipr_reset_ucode_download;
8945 } else
8946 ipr_cmd->job_step = ipr_reset_alert;
8947
8948 LEAVE;
8949 return rc;
8950 }
8951
8952 /**
8953 * ipr_reset_ioa_job - Adapter reset job
8954 * @ipr_cmd: ipr command struct
8955 *
8956 * Description: This function is the job router for the adapter reset job.
8957 *
8958 * Return value:
8959 * none
8960 **/
8961 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8962 {
8963 u32 rc, ioasc;
8964 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8965
8966 do {
8967 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8968
8969 if (ioa_cfg->reset_cmd != ipr_cmd) {
8970 /*
8971 * We are doing nested adapter resets and this is
8972 * not the current reset job.
8973 */
8974 list_add_tail(&ipr_cmd->queue,
8975 &ipr_cmd->hrrq->hrrq_free_q);
8976 return;
8977 }
8978
8979 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8980 rc = ipr_cmd->job_step_failed(ipr_cmd);
8981 if (rc == IPR_RC_JOB_RETURN)
8982 return;
8983 }
8984
8985 ipr_reinit_ipr_cmnd(ipr_cmd);
8986 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8987 rc = ipr_cmd->job_step(ipr_cmd);
8988 } while (rc == IPR_RC_JOB_CONTINUE);
8989 }
8990
8991 /**
8992 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8993 * @ioa_cfg: ioa config struct
8994 * @job_step: first job step of reset job
8995 * @shutdown_type: shutdown type
8996 *
8997 * Description: This function will initiate the reset of the given adapter
8998 * starting at the selected job step.
8999 * If the caller needs to wait on the completion of the reset,
9000 * the caller must sleep on the reset_wait_q.
9001 *
9002 * Return value:
9003 * none
9004 **/
9005 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9006 int (*job_step) (struct ipr_cmnd *),
9007 enum ipr_shutdown_type shutdown_type)
9008 {
9009 struct ipr_cmnd *ipr_cmd;
9010 int i;
9011
9012 ioa_cfg->in_reset_reload = 1;
9013 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9014 spin_lock(&ioa_cfg->hrrq[i]._lock);
9015 ioa_cfg->hrrq[i].allow_cmds = 0;
9016 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9017 }
9018 wmb();
9019 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
9020 scsi_block_requests(ioa_cfg->host);
9021
9022 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9023 ioa_cfg->reset_cmd = ipr_cmd;
9024 ipr_cmd->job_step = job_step;
9025 ipr_cmd->u.shutdown_type = shutdown_type;
9026
9027 ipr_reset_ioa_job(ipr_cmd);
9028 }
9029
9030 /**
9031 * ipr_initiate_ioa_reset - Initiate an adapter reset
9032 * @ioa_cfg: ioa config struct
9033 * @shutdown_type: shutdown type
9034 *
9035 * Description: This function will initiate the reset of the given adapter.
9036 * If the caller needs to wait on the completion of the reset,
9037 * the caller must sleep on the reset_wait_q.
9038 *
9039 * Return value:
9040 * none
9041 **/
9042 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9043 enum ipr_shutdown_type shutdown_type)
9044 {
9045 int i;
9046
9047 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9048 return;
9049
9050 if (ioa_cfg->in_reset_reload) {
9051 if (ioa_cfg->sdt_state == GET_DUMP)
9052 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9053 else if (ioa_cfg->sdt_state == READ_DUMP)
9054 ioa_cfg->sdt_state = ABORT_DUMP;
9055 }
9056
9057 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9058 dev_err(&ioa_cfg->pdev->dev,
9059 "IOA taken offline - error recovery failed\n");
9060
9061 ioa_cfg->reset_retries = 0;
9062 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9063 spin_lock(&ioa_cfg->hrrq[i]._lock);
9064 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9065 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9066 }
9067 wmb();
9068
9069 if (ioa_cfg->in_ioa_bringdown) {
9070 ioa_cfg->reset_cmd = NULL;
9071 ioa_cfg->in_reset_reload = 0;
9072 ipr_fail_all_ops(ioa_cfg);
9073 wake_up_all(&ioa_cfg->reset_wait_q);
9074
9075 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9076 spin_unlock_irq(ioa_cfg->host->host_lock);
9077 scsi_unblock_requests(ioa_cfg->host);
9078 spin_lock_irq(ioa_cfg->host->host_lock);
9079 }
9080 return;
9081 } else {
9082 ioa_cfg->in_ioa_bringdown = 1;
9083 shutdown_type = IPR_SHUTDOWN_NONE;
9084 }
9085 }
9086
9087 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9088 shutdown_type);
9089 }
9090
9091 /**
9092 * ipr_reset_freeze - Hold off all I/O activity
9093 * @ipr_cmd: ipr command struct
9094 *
9095 * Description: If the PCI slot is frozen, hold off all I/O
9096 * activity; then, as soon as the slot is available again,
9097 * initiate an adapter reset.
9098 */
9099 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9100 {
9101 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9102 int i;
9103
9104 /* Disallow new interrupts, avoid loop */
9105 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9106 spin_lock(&ioa_cfg->hrrq[i]._lock);
9107 ioa_cfg->hrrq[i].allow_interrupts = 0;
9108 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9109 }
9110 wmb();
9111 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9112 ipr_cmd->done = ipr_reset_ioa_job;
9113 return IPR_RC_JOB_RETURN;
9114 }
9115
9116 /**
9117 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9118 * @pdev: PCI device struct
9119 *
9120 * Description: This routine is called to tell us that the MMIO
9121 * access to the IOA has been restored
9122 */
9123 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9124 {
9125 unsigned long flags = 0;
9126 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9127
9128 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9129 if (!ioa_cfg->probe_done)
9130 pci_save_state(pdev);
9131 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9132 return PCI_ERS_RESULT_NEED_RESET;
9133 }
9134
9135 /**
9136 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9137 * @pdev: PCI device struct
9138 *
9139 * Description: This routine is called to tell us that the PCI bus
9140 * is down. Can't do anything here, except put the device driver
9141 * into a holding pattern, waiting for the PCI bus to come back.
9142 */
9143 static void ipr_pci_frozen(struct pci_dev *pdev)
9144 {
9145 unsigned long flags = 0;
9146 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9147
9148 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9149 if (ioa_cfg->probe_done)
9150 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9151 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9152 }
9153
9154 /**
9155 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9156 * @pdev: PCI device struct
9157 *
9158 * Description: This routine is called by the pci error recovery
9159 * code after the PCI slot has been reset, just before we
9160 * should resume normal operations.
9161 */
9162 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9163 {
9164 unsigned long flags = 0;
9165 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9166
9167 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9168 if (ioa_cfg->probe_done) {
9169 if (ioa_cfg->needs_warm_reset)
9170 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9171 else
9172 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9173 IPR_SHUTDOWN_NONE);
9174 } else
9175 wake_up_all(&ioa_cfg->eeh_wait_q);
9176 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9177 return PCI_ERS_RESULT_RECOVERED;
9178 }
9179
9180 /**
9181 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9182 * @pdev: PCI device struct
9183 *
9184 * Description: This routine is called when the PCI bus has
9185 * permanently failed.
9186 */
9187 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9188 {
9189 unsigned long flags = 0;
9190 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9191 int i;
9192
9193 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9194 if (ioa_cfg->probe_done) {
9195 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9196 ioa_cfg->sdt_state = ABORT_DUMP;
9197 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9198 ioa_cfg->in_ioa_bringdown = 1;
9199 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9200 spin_lock(&ioa_cfg->hrrq[i]._lock);
9201 ioa_cfg->hrrq[i].allow_cmds = 0;
9202 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9203 }
9204 wmb();
9205 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9206 } else
9207 wake_up_all(&ioa_cfg->eeh_wait_q);
9208 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9209 }
9210
9211 /**
9212 * ipr_pci_error_detected - Called when a PCI error is detected.
9213 * @pdev: PCI device struct
9214 * @state: PCI channel state
9215 *
9216 * Description: Called when a PCI error is detected.
9217 *
9218 * Return value:
9219 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9220 */
9221 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9222 pci_channel_state_t state)
9223 {
9224 switch (state) {
9225 case pci_channel_io_frozen:
9226 ipr_pci_frozen(pdev);
9227 return PCI_ERS_RESULT_CAN_RECOVER;
9228 case pci_channel_io_perm_failure:
9229 ipr_pci_perm_failure(pdev);
9230 return PCI_ERS_RESULT_DISCONNECT;
9231 break;
9232 default:
9233 break;
9234 }
9235 return PCI_ERS_RESULT_NEED_RESET;
9236 }
9237
9238 /**
9239 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9240 * @ioa_cfg: ioa cfg struct
9241 *
9242 * Description: This is the second phase of adapter intialization
9243 * This function takes care of initilizing the adapter to the point
9244 * where it can accept new commands.
9245
9246 * Return value:
9247 * 0 on success / -EIO on failure
9248 **/
9249 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9250 {
9251 int rc = 0;
9252 unsigned long host_lock_flags = 0;
9253
9254 ENTER;
9255 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9256 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9257 ioa_cfg->probe_done = 1;
9258 if (ioa_cfg->needs_hard_reset) {
9259 ioa_cfg->needs_hard_reset = 0;
9260 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9261 } else
9262 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9263 IPR_SHUTDOWN_NONE);
9264 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9265
9266 LEAVE;
9267 return rc;
9268 }
9269
9270 /**
9271 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9272 * @ioa_cfg: ioa config struct
9273 *
9274 * Return value:
9275 * none
9276 **/
9277 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9278 {
9279 int i;
9280
9281 if (ioa_cfg->ipr_cmnd_list) {
9282 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9283 if (ioa_cfg->ipr_cmnd_list[i])
9284 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9285 ioa_cfg->ipr_cmnd_list[i],
9286 ioa_cfg->ipr_cmnd_list_dma[i]);
9287
9288 ioa_cfg->ipr_cmnd_list[i] = NULL;
9289 }
9290 }
9291
9292 if (ioa_cfg->ipr_cmd_pool)
9293 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9294
9295 kfree(ioa_cfg->ipr_cmnd_list);
9296 kfree(ioa_cfg->ipr_cmnd_list_dma);
9297 ioa_cfg->ipr_cmnd_list = NULL;
9298 ioa_cfg->ipr_cmnd_list_dma = NULL;
9299 ioa_cfg->ipr_cmd_pool = NULL;
9300 }
9301
9302 /**
9303 * ipr_free_mem - Frees memory allocated for an adapter
9304 * @ioa_cfg: ioa cfg struct
9305 *
9306 * Return value:
9307 * nothing
9308 **/
9309 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9310 {
9311 int i;
9312
9313 kfree(ioa_cfg->res_entries);
9314 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9315 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9316 ipr_free_cmd_blks(ioa_cfg);
9317
9318 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9319 dma_free_coherent(&ioa_cfg->pdev->dev,
9320 sizeof(u32) * ioa_cfg->hrrq[i].size,
9321 ioa_cfg->hrrq[i].host_rrq,
9322 ioa_cfg->hrrq[i].host_rrq_dma);
9323
9324 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9325 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9326
9327 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9328 dma_free_coherent(&ioa_cfg->pdev->dev,
9329 sizeof(struct ipr_hostrcb),
9330 ioa_cfg->hostrcb[i],
9331 ioa_cfg->hostrcb_dma[i]);
9332 }
9333
9334 ipr_free_dump(ioa_cfg);
9335 kfree(ioa_cfg->trace);
9336 }
9337
9338 /**
9339 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9340 * @ioa_cfg: ipr cfg struct
9341 *
9342 * This function frees all allocated IRQs for the
9343 * specified adapter.
9344 *
9345 * Return value:
9346 * none
9347 **/
9348 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9349 {
9350 struct pci_dev *pdev = ioa_cfg->pdev;
9351
9352 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9353 ioa_cfg->intr_flag == IPR_USE_MSIX) {
9354 int i;
9355 for (i = 0; i < ioa_cfg->nvectors; i++)
9356 free_irq(ioa_cfg->vectors_info[i].vec,
9357 &ioa_cfg->hrrq[i]);
9358 } else
9359 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
9360
9361 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9362 pci_disable_msi(pdev);
9363 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9364 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9365 pci_disable_msix(pdev);
9366 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9367 }
9368 }
9369
9370 /**
9371 * ipr_free_all_resources - Free all allocated resources for an adapter.
9372 * @ipr_cmd: ipr command struct
9373 *
9374 * This function frees all allocated resources for the
9375 * specified adapter.
9376 *
9377 * Return value:
9378 * none
9379 **/
9380 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9381 {
9382 struct pci_dev *pdev = ioa_cfg->pdev;
9383
9384 ENTER;
9385 ipr_free_irqs(ioa_cfg);
9386 if (ioa_cfg->reset_work_q)
9387 destroy_workqueue(ioa_cfg->reset_work_q);
9388 iounmap(ioa_cfg->hdw_dma_regs);
9389 pci_release_regions(pdev);
9390 ipr_free_mem(ioa_cfg);
9391 scsi_host_put(ioa_cfg->host);
9392 pci_disable_device(pdev);
9393 LEAVE;
9394 }
9395
9396 /**
9397 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9398 * @ioa_cfg: ioa config struct
9399 *
9400 * Return value:
9401 * 0 on success / -ENOMEM on allocation failure
9402 **/
9403 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9404 {
9405 struct ipr_cmnd *ipr_cmd;
9406 struct ipr_ioarcb *ioarcb;
9407 dma_addr_t dma_addr;
9408 int i, entries_each_hrrq, hrrq_id = 0;
9409
9410 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9411 sizeof(struct ipr_cmnd), 512, 0);
9412
9413 if (!ioa_cfg->ipr_cmd_pool)
9414 return -ENOMEM;
9415
9416 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9417 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9418
9419 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9420 ipr_free_cmd_blks(ioa_cfg);
9421 return -ENOMEM;
9422 }
9423
9424 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9425 if (ioa_cfg->hrrq_num > 1) {
9426 if (i == 0) {
9427 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9428 ioa_cfg->hrrq[i].min_cmd_id = 0;
9429 ioa_cfg->hrrq[i].max_cmd_id =
9430 (entries_each_hrrq - 1);
9431 } else {
9432 entries_each_hrrq =
9433 IPR_NUM_BASE_CMD_BLKS/
9434 (ioa_cfg->hrrq_num - 1);
9435 ioa_cfg->hrrq[i].min_cmd_id =
9436 IPR_NUM_INTERNAL_CMD_BLKS +
9437 (i - 1) * entries_each_hrrq;
9438 ioa_cfg->hrrq[i].max_cmd_id =
9439 (IPR_NUM_INTERNAL_CMD_BLKS +
9440 i * entries_each_hrrq - 1);
9441 }
9442 } else {
9443 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9444 ioa_cfg->hrrq[i].min_cmd_id = 0;
9445 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9446 }
9447 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9448 }
9449
9450 BUG_ON(ioa_cfg->hrrq_num == 0);
9451
9452 i = IPR_NUM_CMD_BLKS -
9453 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9454 if (i > 0) {
9455 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9456 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9457 }
9458
9459 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9460 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9461
9462 if (!ipr_cmd) {
9463 ipr_free_cmd_blks(ioa_cfg);
9464 return -ENOMEM;
9465 }
9466
9467 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9468 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9469 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9470
9471 ioarcb = &ipr_cmd->ioarcb;
9472 ipr_cmd->dma_addr = dma_addr;
9473 if (ioa_cfg->sis64)
9474 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9475 else
9476 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9477
9478 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9479 if (ioa_cfg->sis64) {
9480 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9481 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9482 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9483 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9484 } else {
9485 ioarcb->write_ioadl_addr =
9486 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9487 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9488 ioarcb->ioasa_host_pci_addr =
9489 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9490 }
9491 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9492 ipr_cmd->cmd_index = i;
9493 ipr_cmd->ioa_cfg = ioa_cfg;
9494 ipr_cmd->sense_buffer_dma = dma_addr +
9495 offsetof(struct ipr_cmnd, sense_buffer);
9496
9497 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9498 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9499 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9500 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9501 hrrq_id++;
9502 }
9503
9504 return 0;
9505 }
9506
9507 /**
9508 * ipr_alloc_mem - Allocate memory for an adapter
9509 * @ioa_cfg: ioa config struct
9510 *
9511 * Return value:
9512 * 0 on success / non-zero for error
9513 **/
9514 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9515 {
9516 struct pci_dev *pdev = ioa_cfg->pdev;
9517 int i, rc = -ENOMEM;
9518
9519 ENTER;
9520 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9521 ioa_cfg->max_devs_supported, GFP_KERNEL);
9522
9523 if (!ioa_cfg->res_entries)
9524 goto out;
9525
9526 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9527 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9528 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9529 }
9530
9531 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9532 sizeof(struct ipr_misc_cbs),
9533 &ioa_cfg->vpd_cbs_dma,
9534 GFP_KERNEL);
9535
9536 if (!ioa_cfg->vpd_cbs)
9537 goto out_free_res_entries;
9538
9539 if (ipr_alloc_cmd_blks(ioa_cfg))
9540 goto out_free_vpd_cbs;
9541
9542 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9543 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9544 sizeof(u32) * ioa_cfg->hrrq[i].size,
9545 &ioa_cfg->hrrq[i].host_rrq_dma,
9546 GFP_KERNEL);
9547
9548 if (!ioa_cfg->hrrq[i].host_rrq) {
9549 while (--i > 0)
9550 dma_free_coherent(&pdev->dev,
9551 sizeof(u32) * ioa_cfg->hrrq[i].size,
9552 ioa_cfg->hrrq[i].host_rrq,
9553 ioa_cfg->hrrq[i].host_rrq_dma);
9554 goto out_ipr_free_cmd_blocks;
9555 }
9556 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9557 }
9558
9559 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9560 ioa_cfg->cfg_table_size,
9561 &ioa_cfg->cfg_table_dma,
9562 GFP_KERNEL);
9563
9564 if (!ioa_cfg->u.cfg_table)
9565 goto out_free_host_rrq;
9566
9567 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9568 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9569 sizeof(struct ipr_hostrcb),
9570 &ioa_cfg->hostrcb_dma[i],
9571 GFP_KERNEL);
9572
9573 if (!ioa_cfg->hostrcb[i])
9574 goto out_free_hostrcb_dma;
9575
9576 ioa_cfg->hostrcb[i]->hostrcb_dma =
9577 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9578 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9579 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9580 }
9581
9582 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9583 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9584
9585 if (!ioa_cfg->trace)
9586 goto out_free_hostrcb_dma;
9587
9588 rc = 0;
9589 out:
9590 LEAVE;
9591 return rc;
9592
9593 out_free_hostrcb_dma:
9594 while (i-- > 0) {
9595 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9596 ioa_cfg->hostrcb[i],
9597 ioa_cfg->hostrcb_dma[i]);
9598 }
9599 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9600 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9601 out_free_host_rrq:
9602 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9603 dma_free_coherent(&pdev->dev,
9604 sizeof(u32) * ioa_cfg->hrrq[i].size,
9605 ioa_cfg->hrrq[i].host_rrq,
9606 ioa_cfg->hrrq[i].host_rrq_dma);
9607 }
9608 out_ipr_free_cmd_blocks:
9609 ipr_free_cmd_blks(ioa_cfg);
9610 out_free_vpd_cbs:
9611 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9612 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9613 out_free_res_entries:
9614 kfree(ioa_cfg->res_entries);
9615 goto out;
9616 }
9617
9618 /**
9619 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9620 * @ioa_cfg: ioa config struct
9621 *
9622 * Return value:
9623 * none
9624 **/
9625 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9626 {
9627 int i;
9628
9629 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9630 ioa_cfg->bus_attr[i].bus = i;
9631 ioa_cfg->bus_attr[i].qas_enabled = 0;
9632 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9633 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9634 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9635 else
9636 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9637 }
9638 }
9639
9640 /**
9641 * ipr_init_regs - Initialize IOA registers
9642 * @ioa_cfg: ioa config struct
9643 *
9644 * Return value:
9645 * none
9646 **/
9647 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9648 {
9649 const struct ipr_interrupt_offsets *p;
9650 struct ipr_interrupts *t;
9651 void __iomem *base;
9652
9653 p = &ioa_cfg->chip_cfg->regs;
9654 t = &ioa_cfg->regs;
9655 base = ioa_cfg->hdw_dma_regs;
9656
9657 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9658 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9659 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9660 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9661 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9662 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9663 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9664 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9665 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9666 t->ioarrin_reg = base + p->ioarrin_reg;
9667 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9668 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9669 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9670 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9671 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9672 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9673
9674 if (ioa_cfg->sis64) {
9675 t->init_feedback_reg = base + p->init_feedback_reg;
9676 t->dump_addr_reg = base + p->dump_addr_reg;
9677 t->dump_data_reg = base + p->dump_data_reg;
9678 t->endian_swap_reg = base + p->endian_swap_reg;
9679 }
9680 }
9681
9682 /**
9683 * ipr_init_ioa_cfg - Initialize IOA config struct
9684 * @ioa_cfg: ioa config struct
9685 * @host: scsi host struct
9686 * @pdev: PCI dev struct
9687 *
9688 * Return value:
9689 * none
9690 **/
9691 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9692 struct Scsi_Host *host, struct pci_dev *pdev)
9693 {
9694 int i;
9695
9696 ioa_cfg->host = host;
9697 ioa_cfg->pdev = pdev;
9698 ioa_cfg->log_level = ipr_log_level;
9699 ioa_cfg->doorbell = IPR_DOORBELL;
9700 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9701 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9702 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9703 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9704 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9705 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9706
9707 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9708 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9709 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9710 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9711 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9712 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9713 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9714 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9715 ioa_cfg->sdt_state = INACTIVE;
9716
9717 ipr_initialize_bus_attr(ioa_cfg);
9718 ioa_cfg->max_devs_supported = ipr_max_devs;
9719
9720 if (ioa_cfg->sis64) {
9721 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9722 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9723 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9724 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9725 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9726 + ((sizeof(struct ipr_config_table_entry64)
9727 * ioa_cfg->max_devs_supported)));
9728 } else {
9729 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9730 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9731 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9732 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9733 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9734 + ((sizeof(struct ipr_config_table_entry)
9735 * ioa_cfg->max_devs_supported)));
9736 }
9737
9738 host->max_channel = IPR_VSET_BUS;
9739 host->unique_id = host->host_no;
9740 host->max_cmd_len = IPR_MAX_CDB_LEN;
9741 host->can_queue = ioa_cfg->max_cmds;
9742 pci_set_drvdata(pdev, ioa_cfg);
9743
9744 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9745 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9746 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9747 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9748 if (i == 0)
9749 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9750 else
9751 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9752 }
9753 }
9754
9755 /**
9756 * ipr_get_chip_info - Find adapter chip information
9757 * @dev_id: PCI device id struct
9758 *
9759 * Return value:
9760 * ptr to chip information on success / NULL on failure
9761 **/
9762 static const struct ipr_chip_t *
9763 ipr_get_chip_info(const struct pci_device_id *dev_id)
9764 {
9765 int i;
9766
9767 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9768 if (ipr_chip[i].vendor == dev_id->vendor &&
9769 ipr_chip[i].device == dev_id->device)
9770 return &ipr_chip[i];
9771 return NULL;
9772 }
9773
9774 /**
9775 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9776 * during probe time
9777 * @ioa_cfg: ioa config struct
9778 *
9779 * Return value:
9780 * None
9781 **/
9782 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9783 {
9784 struct pci_dev *pdev = ioa_cfg->pdev;
9785
9786 if (pci_channel_offline(pdev)) {
9787 wait_event_timeout(ioa_cfg->eeh_wait_q,
9788 !pci_channel_offline(pdev),
9789 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9790 pci_restore_state(pdev);
9791 }
9792 }
9793
9794 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9795 {
9796 struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9797 int i, vectors;
9798
9799 for (i = 0; i < ARRAY_SIZE(entries); ++i)
9800 entries[i].entry = i;
9801
9802 vectors = pci_enable_msix_range(ioa_cfg->pdev,
9803 entries, 1, ipr_number_of_msix);
9804 if (vectors < 0) {
9805 ipr_wait_for_pci_err_recovery(ioa_cfg);
9806 return vectors;
9807 }
9808
9809 for (i = 0; i < vectors; i++)
9810 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9811 ioa_cfg->nvectors = vectors;
9812
9813 return 0;
9814 }
9815
9816 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9817 {
9818 int i, vectors;
9819
9820 vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9821 if (vectors < 0) {
9822 ipr_wait_for_pci_err_recovery(ioa_cfg);
9823 return vectors;
9824 }
9825
9826 for (i = 0; i < vectors; i++)
9827 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9828 ioa_cfg->nvectors = vectors;
9829
9830 return 0;
9831 }
9832
9833 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9834 {
9835 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9836
9837 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9838 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9839 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9840 ioa_cfg->vectors_info[vec_idx].
9841 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9842 }
9843 }
9844
9845 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9846 {
9847 int i, rc;
9848
9849 for (i = 1; i < ioa_cfg->nvectors; i++) {
9850 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9851 ipr_isr_mhrrq,
9852 0,
9853 ioa_cfg->vectors_info[i].desc,
9854 &ioa_cfg->hrrq[i]);
9855 if (rc) {
9856 while (--i >= 0)
9857 free_irq(ioa_cfg->vectors_info[i].vec,
9858 &ioa_cfg->hrrq[i]);
9859 return rc;
9860 }
9861 }
9862 return 0;
9863 }
9864
9865 /**
9866 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9867 * @pdev: PCI device struct
9868 *
9869 * Description: Simply set the msi_received flag to 1 indicating that
9870 * Message Signaled Interrupts are supported.
9871 *
9872 * Return value:
9873 * 0 on success / non-zero on failure
9874 **/
9875 static irqreturn_t ipr_test_intr(int irq, void *devp)
9876 {
9877 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9878 unsigned long lock_flags = 0;
9879 irqreturn_t rc = IRQ_HANDLED;
9880
9881 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9882 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9883
9884 ioa_cfg->msi_received = 1;
9885 wake_up(&ioa_cfg->msi_wait_q);
9886
9887 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9888 return rc;
9889 }
9890
9891 /**
9892 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9893 * @pdev: PCI device struct
9894 *
9895 * Description: The return value from pci_enable_msi_range() can not always be
9896 * trusted. This routine sets up and initiates a test interrupt to determine
9897 * if the interrupt is received via the ipr_test_intr() service routine.
9898 * If the tests fails, the driver will fall back to LSI.
9899 *
9900 * Return value:
9901 * 0 on success / non-zero on failure
9902 **/
9903 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9904 {
9905 int rc;
9906 volatile u32 int_reg;
9907 unsigned long lock_flags = 0;
9908
9909 ENTER;
9910
9911 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9912 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9913 ioa_cfg->msi_received = 0;
9914 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9915 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9916 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9917 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9918
9919 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9920 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9921 else
9922 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9923 if (rc) {
9924 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9925 return rc;
9926 } else if (ipr_debug)
9927 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9928
9929 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9930 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9931 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9932 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9933 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9934
9935 if (!ioa_cfg->msi_received) {
9936 /* MSI test failed */
9937 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9938 rc = -EOPNOTSUPP;
9939 } else if (ipr_debug)
9940 dev_info(&pdev->dev, "MSI test succeeded.\n");
9941
9942 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9943
9944 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9945 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9946 else
9947 free_irq(pdev->irq, ioa_cfg);
9948
9949 LEAVE;
9950
9951 return rc;
9952 }
9953
9954 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9955 * @pdev: PCI device struct
9956 * @dev_id: PCI device id struct
9957 *
9958 * Return value:
9959 * 0 on success / non-zero on failure
9960 **/
9961 static int ipr_probe_ioa(struct pci_dev *pdev,
9962 const struct pci_device_id *dev_id)
9963 {
9964 struct ipr_ioa_cfg *ioa_cfg;
9965 struct Scsi_Host *host;
9966 unsigned long ipr_regs_pci;
9967 void __iomem *ipr_regs;
9968 int rc = PCIBIOS_SUCCESSFUL;
9969 volatile u32 mask, uproc, interrupts;
9970 unsigned long lock_flags, driver_lock_flags;
9971
9972 ENTER;
9973
9974 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9975 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9976
9977 if (!host) {
9978 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9979 rc = -ENOMEM;
9980 goto out;
9981 }
9982
9983 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9984 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9985 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9986
9987 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9988
9989 if (!ioa_cfg->ipr_chip) {
9990 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9991 dev_id->vendor, dev_id->device);
9992 goto out_scsi_host_put;
9993 }
9994
9995 /* set SIS 32 or SIS 64 */
9996 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9997 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
9998 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
9999 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10000
10001 if (ipr_transop_timeout)
10002 ioa_cfg->transop_timeout = ipr_transop_timeout;
10003 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10004 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10005 else
10006 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10007
10008 ioa_cfg->revid = pdev->revision;
10009
10010 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10011
10012 ipr_regs_pci = pci_resource_start(pdev, 0);
10013
10014 rc = pci_request_regions(pdev, IPR_NAME);
10015 if (rc < 0) {
10016 dev_err(&pdev->dev,
10017 "Couldn't register memory range of registers\n");
10018 goto out_scsi_host_put;
10019 }
10020
10021 rc = pci_enable_device(pdev);
10022
10023 if (rc || pci_channel_offline(pdev)) {
10024 if (pci_channel_offline(pdev)) {
10025 ipr_wait_for_pci_err_recovery(ioa_cfg);
10026 rc = pci_enable_device(pdev);
10027 }
10028
10029 if (rc) {
10030 dev_err(&pdev->dev, "Cannot enable adapter\n");
10031 ipr_wait_for_pci_err_recovery(ioa_cfg);
10032 goto out_release_regions;
10033 }
10034 }
10035
10036 ipr_regs = pci_ioremap_bar(pdev, 0);
10037
10038 if (!ipr_regs) {
10039 dev_err(&pdev->dev,
10040 "Couldn't map memory range of registers\n");
10041 rc = -ENOMEM;
10042 goto out_disable;
10043 }
10044
10045 ioa_cfg->hdw_dma_regs = ipr_regs;
10046 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10047 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10048
10049 ipr_init_regs(ioa_cfg);
10050
10051 if (ioa_cfg->sis64) {
10052 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10053 if (rc < 0) {
10054 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10055 rc = dma_set_mask_and_coherent(&pdev->dev,
10056 DMA_BIT_MASK(32));
10057 }
10058 } else
10059 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10060
10061 if (rc < 0) {
10062 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10063 goto cleanup_nomem;
10064 }
10065
10066 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10067 ioa_cfg->chip_cfg->cache_line_size);
10068
10069 if (rc != PCIBIOS_SUCCESSFUL) {
10070 dev_err(&pdev->dev, "Write of cache line size failed\n");
10071 ipr_wait_for_pci_err_recovery(ioa_cfg);
10072 rc = -EIO;
10073 goto cleanup_nomem;
10074 }
10075
10076 /* Issue MMIO read to ensure card is not in EEH */
10077 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10078 ipr_wait_for_pci_err_recovery(ioa_cfg);
10079
10080 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10081 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10082 IPR_MAX_MSIX_VECTORS);
10083 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10084 }
10085
10086 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10087 ipr_enable_msix(ioa_cfg) == 0)
10088 ioa_cfg->intr_flag = IPR_USE_MSIX;
10089 else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10090 ipr_enable_msi(ioa_cfg) == 0)
10091 ioa_cfg->intr_flag = IPR_USE_MSI;
10092 else {
10093 ioa_cfg->intr_flag = IPR_USE_LSI;
10094 ioa_cfg->nvectors = 1;
10095 dev_info(&pdev->dev, "Cannot enable MSI.\n");
10096 }
10097
10098 pci_set_master(pdev);
10099
10100 if (pci_channel_offline(pdev)) {
10101 ipr_wait_for_pci_err_recovery(ioa_cfg);
10102 pci_set_master(pdev);
10103 if (pci_channel_offline(pdev)) {
10104 rc = -EIO;
10105 goto out_msi_disable;
10106 }
10107 }
10108
10109 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
10110 ioa_cfg->intr_flag == IPR_USE_MSIX) {
10111 rc = ipr_test_msi(ioa_cfg, pdev);
10112 if (rc == -EOPNOTSUPP) {
10113 ipr_wait_for_pci_err_recovery(ioa_cfg);
10114 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
10115 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
10116 pci_disable_msi(pdev);
10117 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
10118 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
10119 pci_disable_msix(pdev);
10120 }
10121
10122 ioa_cfg->intr_flag = IPR_USE_LSI;
10123 ioa_cfg->nvectors = 1;
10124 }
10125 else if (rc)
10126 goto out_msi_disable;
10127 else {
10128 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10129 dev_info(&pdev->dev,
10130 "Request for %d MSIs succeeded with starting IRQ: %d\n",
10131 ioa_cfg->nvectors, pdev->irq);
10132 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10133 dev_info(&pdev->dev,
10134 "Request for %d MSIXs succeeded.",
10135 ioa_cfg->nvectors);
10136 }
10137 }
10138
10139 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10140 (unsigned int)num_online_cpus(),
10141 (unsigned int)IPR_MAX_HRRQ_NUM);
10142
10143 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10144 goto out_msi_disable;
10145
10146 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10147 goto out_msi_disable;
10148
10149 rc = ipr_alloc_mem(ioa_cfg);
10150 if (rc < 0) {
10151 dev_err(&pdev->dev,
10152 "Couldn't allocate enough memory for device driver!\n");
10153 goto out_msi_disable;
10154 }
10155
10156 /* Save away PCI config space for use following IOA reset */
10157 rc = pci_save_state(pdev);
10158
10159 if (rc != PCIBIOS_SUCCESSFUL) {
10160 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10161 rc = -EIO;
10162 goto cleanup_nolog;
10163 }
10164
10165 /*
10166 * If HRRQ updated interrupt is not masked, or reset alert is set,
10167 * the card is in an unknown state and needs a hard reset
10168 */
10169 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10170 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10171 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10172 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10173 ioa_cfg->needs_hard_reset = 1;
10174 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10175 ioa_cfg->needs_hard_reset = 1;
10176 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10177 ioa_cfg->ioa_unit_checked = 1;
10178
10179 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10180 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10181 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10182
10183 if (ioa_cfg->intr_flag == IPR_USE_MSI
10184 || ioa_cfg->intr_flag == IPR_USE_MSIX) {
10185 name_msi_vectors(ioa_cfg);
10186 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
10187 0,
10188 ioa_cfg->vectors_info[0].desc,
10189 &ioa_cfg->hrrq[0]);
10190 if (!rc)
10191 rc = ipr_request_other_msi_irqs(ioa_cfg);
10192 } else {
10193 rc = request_irq(pdev->irq, ipr_isr,
10194 IRQF_SHARED,
10195 IPR_NAME, &ioa_cfg->hrrq[0]);
10196 }
10197 if (rc) {
10198 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10199 pdev->irq, rc);
10200 goto cleanup_nolog;
10201 }
10202
10203 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10204 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10205 ioa_cfg->needs_warm_reset = 1;
10206 ioa_cfg->reset = ipr_reset_slot_reset;
10207
10208 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10209 WQ_MEM_RECLAIM, host->host_no);
10210
10211 if (!ioa_cfg->reset_work_q) {
10212 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10213 goto out_free_irq;
10214 }
10215 } else
10216 ioa_cfg->reset = ipr_reset_start_bist;
10217
10218 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10219 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10220 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10221
10222 LEAVE;
10223 out:
10224 return rc;
10225
10226 out_free_irq:
10227 ipr_free_irqs(ioa_cfg);
10228 cleanup_nolog:
10229 ipr_free_mem(ioa_cfg);
10230 out_msi_disable:
10231 ipr_wait_for_pci_err_recovery(ioa_cfg);
10232 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10233 pci_disable_msi(pdev);
10234 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10235 pci_disable_msix(pdev);
10236 cleanup_nomem:
10237 iounmap(ipr_regs);
10238 out_disable:
10239 pci_disable_device(pdev);
10240 out_release_regions:
10241 pci_release_regions(pdev);
10242 out_scsi_host_put:
10243 scsi_host_put(host);
10244 goto out;
10245 }
10246
10247 /**
10248 * ipr_initiate_ioa_bringdown - Bring down an adapter
10249 * @ioa_cfg: ioa config struct
10250 * @shutdown_type: shutdown type
10251 *
10252 * Description: This function will initiate bringing down the adapter.
10253 * This consists of issuing an IOA shutdown to the adapter
10254 * to flush the cache, and running BIST.
10255 * If the caller needs to wait on the completion of the reset,
10256 * the caller must sleep on the reset_wait_q.
10257 *
10258 * Return value:
10259 * none
10260 **/
10261 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10262 enum ipr_shutdown_type shutdown_type)
10263 {
10264 ENTER;
10265 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10266 ioa_cfg->sdt_state = ABORT_DUMP;
10267 ioa_cfg->reset_retries = 0;
10268 ioa_cfg->in_ioa_bringdown = 1;
10269 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10270 LEAVE;
10271 }
10272
10273 /**
10274 * __ipr_remove - Remove a single adapter
10275 * @pdev: pci device struct
10276 *
10277 * Adapter hot plug remove entry point.
10278 *
10279 * Return value:
10280 * none
10281 **/
10282 static void __ipr_remove(struct pci_dev *pdev)
10283 {
10284 unsigned long host_lock_flags = 0;
10285 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10286 int i;
10287 unsigned long driver_lock_flags;
10288 ENTER;
10289
10290 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10291 while (ioa_cfg->in_reset_reload) {
10292 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10293 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10294 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10295 }
10296
10297 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10298 spin_lock(&ioa_cfg->hrrq[i]._lock);
10299 ioa_cfg->hrrq[i].removing_ioa = 1;
10300 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10301 }
10302 wmb();
10303 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10304
10305 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10306 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10307 flush_work(&ioa_cfg->work_q);
10308 if (ioa_cfg->reset_work_q)
10309 flush_workqueue(ioa_cfg->reset_work_q);
10310 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10311 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10312
10313 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10314 list_del(&ioa_cfg->queue);
10315 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10316
10317 if (ioa_cfg->sdt_state == ABORT_DUMP)
10318 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10319 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10320
10321 ipr_free_all_resources(ioa_cfg);
10322
10323 LEAVE;
10324 }
10325
10326 /**
10327 * ipr_remove - IOA hot plug remove entry point
10328 * @pdev: pci device struct
10329 *
10330 * Adapter hot plug remove entry point.
10331 *
10332 * Return value:
10333 * none
10334 **/
10335 static void ipr_remove(struct pci_dev *pdev)
10336 {
10337 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10338
10339 ENTER;
10340
10341 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10342 &ipr_trace_attr);
10343 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10344 &ipr_dump_attr);
10345 scsi_remove_host(ioa_cfg->host);
10346
10347 __ipr_remove(pdev);
10348
10349 LEAVE;
10350 }
10351
10352 /**
10353 * ipr_probe - Adapter hot plug add entry point
10354 *
10355 * Return value:
10356 * 0 on success / non-zero on failure
10357 **/
10358 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10359 {
10360 struct ipr_ioa_cfg *ioa_cfg;
10361 int rc, i;
10362
10363 rc = ipr_probe_ioa(pdev, dev_id);
10364
10365 if (rc)
10366 return rc;
10367
10368 ioa_cfg = pci_get_drvdata(pdev);
10369 rc = ipr_probe_ioa_part2(ioa_cfg);
10370
10371 if (rc) {
10372 __ipr_remove(pdev);
10373 return rc;
10374 }
10375
10376 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10377
10378 if (rc) {
10379 __ipr_remove(pdev);
10380 return rc;
10381 }
10382
10383 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10384 &ipr_trace_attr);
10385
10386 if (rc) {
10387 scsi_remove_host(ioa_cfg->host);
10388 __ipr_remove(pdev);
10389 return rc;
10390 }
10391
10392 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10393 &ipr_dump_attr);
10394
10395 if (rc) {
10396 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10397 &ipr_trace_attr);
10398 scsi_remove_host(ioa_cfg->host);
10399 __ipr_remove(pdev);
10400 return rc;
10401 }
10402
10403 scsi_scan_host(ioa_cfg->host);
10404 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10405
10406 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10407 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10408 blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
10409 ioa_cfg->iopoll_weight, ipr_iopoll);
10410 blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
10411 }
10412 }
10413
10414 schedule_work(&ioa_cfg->work_q);
10415 return 0;
10416 }
10417
10418 /**
10419 * ipr_shutdown - Shutdown handler.
10420 * @pdev: pci device struct
10421 *
10422 * This function is invoked upon system shutdown/reboot. It will issue
10423 * an adapter shutdown to the adapter to flush the write cache.
10424 *
10425 * Return value:
10426 * none
10427 **/
10428 static void ipr_shutdown(struct pci_dev *pdev)
10429 {
10430 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10431 unsigned long lock_flags = 0;
10432 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10433 int i;
10434
10435 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10436 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10437 ioa_cfg->iopoll_weight = 0;
10438 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10439 blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
10440 }
10441
10442 while (ioa_cfg->in_reset_reload) {
10443 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10444 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10445 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10446 }
10447
10448 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10449 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10450
10451 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10452 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10453 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10454 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10455 ipr_free_irqs(ioa_cfg);
10456 pci_disable_device(ioa_cfg->pdev);
10457 }
10458 }
10459
10460 static struct pci_device_id ipr_pci_table[] = {
10461 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10462 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10463 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10464 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10465 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10466 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10467 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10468 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10469 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10470 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10471 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10472 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10473 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10474 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10475 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10476 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10477 IPR_USE_LONG_TRANSOP_TIMEOUT },
10478 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10479 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10480 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10481 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10482 IPR_USE_LONG_TRANSOP_TIMEOUT },
10483 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10484 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10485 IPR_USE_LONG_TRANSOP_TIMEOUT },
10486 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10487 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10488 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10489 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10490 IPR_USE_LONG_TRANSOP_TIMEOUT},
10491 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10492 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10493 IPR_USE_LONG_TRANSOP_TIMEOUT },
10494 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10495 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10496 IPR_USE_LONG_TRANSOP_TIMEOUT },
10497 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10498 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10499 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10500 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10501 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10502 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10503 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10504 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10505 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10506 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10507 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10508 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10509 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10510 IPR_USE_LONG_TRANSOP_TIMEOUT },
10511 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10512 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10513 IPR_USE_LONG_TRANSOP_TIMEOUT },
10514 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10515 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10516 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10517 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10518 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10519 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10520 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10521 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10522 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10523 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10524 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10525 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10526 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10527 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10528 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10529 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10530 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10531 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10532 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10533 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10534 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10535 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10536 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10538 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10539 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10540 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10541 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10542 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10543 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10544 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10545 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10546 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10547 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10548 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10549 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10550 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10551 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10552 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10553 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10554 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10555 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10556 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10557 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10558 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10559 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10560 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10562 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10563 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10564 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10565 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10566 { }
10567 };
10568 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10569
10570 static const struct pci_error_handlers ipr_err_handler = {
10571 .error_detected = ipr_pci_error_detected,
10572 .mmio_enabled = ipr_pci_mmio_enabled,
10573 .slot_reset = ipr_pci_slot_reset,
10574 };
10575
10576 static struct pci_driver ipr_driver = {
10577 .name = IPR_NAME,
10578 .id_table = ipr_pci_table,
10579 .probe = ipr_probe,
10580 .remove = ipr_remove,
10581 .shutdown = ipr_shutdown,
10582 .err_handler = &ipr_err_handler,
10583 };
10584
10585 /**
10586 * ipr_halt_done - Shutdown prepare completion
10587 *
10588 * Return value:
10589 * none
10590 **/
10591 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10592 {
10593 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10594 }
10595
10596 /**
10597 * ipr_halt - Issue shutdown prepare to all adapters
10598 *
10599 * Return value:
10600 * NOTIFY_OK on success / NOTIFY_DONE on failure
10601 **/
10602 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10603 {
10604 struct ipr_cmnd *ipr_cmd;
10605 struct ipr_ioa_cfg *ioa_cfg;
10606 unsigned long flags = 0, driver_lock_flags;
10607
10608 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10609 return NOTIFY_DONE;
10610
10611 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10612
10613 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10614 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10615 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10616 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10617 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10618 continue;
10619 }
10620
10621 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10622 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10623 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10624 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10625 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10626
10627 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10628 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10629 }
10630 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10631
10632 return NOTIFY_OK;
10633 }
10634
10635 static struct notifier_block ipr_notifier = {
10636 ipr_halt, NULL, 0
10637 };
10638
10639 /**
10640 * ipr_init - Module entry point
10641 *
10642 * Return value:
10643 * 0 on success / negative value on failure
10644 **/
10645 static int __init ipr_init(void)
10646 {
10647 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10648 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10649
10650 register_reboot_notifier(&ipr_notifier);
10651 return pci_register_driver(&ipr_driver);
10652 }
10653
10654 /**
10655 * ipr_exit - Module unload
10656 *
10657 * Module unload entry point.
10658 *
10659 * Return value:
10660 * none
10661 **/
10662 static void __exit ipr_exit(void)
10663 {
10664 unregister_reboot_notifier(&ipr_notifier);
10665 pci_unregister_driver(&ipr_driver);
10666 }
10667
10668 module_init(ipr_init);
10669 module_exit(ipr_exit);
Linux kernel - Deliverables
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