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ipr: Inquiry IOA page 0xC4 during initialization.
[mirror_ubuntu-bionic-kernel.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 .use_blk_tags = 1,
6510 };
6511
6512 /**
6513 * ipr_ata_phy_reset - libata phy_reset handler
6514 * @ap: ata port to reset
6515 *
6516 **/
6517 static void ipr_ata_phy_reset(struct ata_port *ap)
6518 {
6519 unsigned long flags;
6520 struct ipr_sata_port *sata_port = ap->private_data;
6521 struct ipr_resource_entry *res = sata_port->res;
6522 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6523 int rc;
6524
6525 ENTER;
6526 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6527 while (ioa_cfg->in_reset_reload) {
6528 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6529 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6530 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6531 }
6532
6533 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6534 goto out_unlock;
6535
6536 rc = ipr_device_reset(ioa_cfg, res);
6537
6538 if (rc) {
6539 ap->link.device[0].class = ATA_DEV_NONE;
6540 goto out_unlock;
6541 }
6542
6543 ap->link.device[0].class = res->ata_class;
6544 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6545 ap->link.device[0].class = ATA_DEV_NONE;
6546
6547 out_unlock:
6548 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6549 LEAVE;
6550 }
6551
6552 /**
6553 * ipr_ata_post_internal - Cleanup after an internal command
6554 * @qc: ATA queued command
6555 *
6556 * Return value:
6557 * none
6558 **/
6559 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6560 {
6561 struct ipr_sata_port *sata_port = qc->ap->private_data;
6562 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6563 struct ipr_cmnd *ipr_cmd;
6564 struct ipr_hrr_queue *hrrq;
6565 unsigned long flags;
6566
6567 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6568 while (ioa_cfg->in_reset_reload) {
6569 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6570 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6571 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6572 }
6573
6574 for_each_hrrq(hrrq, ioa_cfg) {
6575 spin_lock(&hrrq->_lock);
6576 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6577 if (ipr_cmd->qc == qc) {
6578 ipr_device_reset(ioa_cfg, sata_port->res);
6579 break;
6580 }
6581 }
6582 spin_unlock(&hrrq->_lock);
6583 }
6584 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6585 }
6586
6587 /**
6588 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6589 * @regs: destination
6590 * @tf: source ATA taskfile
6591 *
6592 * Return value:
6593 * none
6594 **/
6595 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6596 struct ata_taskfile *tf)
6597 {
6598 regs->feature = tf->feature;
6599 regs->nsect = tf->nsect;
6600 regs->lbal = tf->lbal;
6601 regs->lbam = tf->lbam;
6602 regs->lbah = tf->lbah;
6603 regs->device = tf->device;
6604 regs->command = tf->command;
6605 regs->hob_feature = tf->hob_feature;
6606 regs->hob_nsect = tf->hob_nsect;
6607 regs->hob_lbal = tf->hob_lbal;
6608 regs->hob_lbam = tf->hob_lbam;
6609 regs->hob_lbah = tf->hob_lbah;
6610 regs->ctl = tf->ctl;
6611 }
6612
6613 /**
6614 * ipr_sata_done - done function for SATA commands
6615 * @ipr_cmd: ipr command struct
6616 *
6617 * This function is invoked by the interrupt handler for
6618 * ops generated by the SCSI mid-layer to SATA devices
6619 *
6620 * Return value:
6621 * none
6622 **/
6623 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6624 {
6625 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6626 struct ata_queued_cmd *qc = ipr_cmd->qc;
6627 struct ipr_sata_port *sata_port = qc->ap->private_data;
6628 struct ipr_resource_entry *res = sata_port->res;
6629 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6630
6631 spin_lock(&ipr_cmd->hrrq->_lock);
6632 if (ipr_cmd->ioa_cfg->sis64)
6633 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6634 sizeof(struct ipr_ioasa_gata));
6635 else
6636 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6637 sizeof(struct ipr_ioasa_gata));
6638 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6639
6640 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6641 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6642
6643 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6644 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6645 else
6646 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6647 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6648 spin_unlock(&ipr_cmd->hrrq->_lock);
6649 ata_qc_complete(qc);
6650 }
6651
6652 /**
6653 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6654 * @ipr_cmd: ipr command struct
6655 * @qc: ATA queued command
6656 *
6657 **/
6658 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6659 struct ata_queued_cmd *qc)
6660 {
6661 u32 ioadl_flags = 0;
6662 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6663 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6664 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6665 int len = qc->nbytes;
6666 struct scatterlist *sg;
6667 unsigned int si;
6668 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6669
6670 if (len == 0)
6671 return;
6672
6673 if (qc->dma_dir == DMA_TO_DEVICE) {
6674 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6675 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6676 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6677 ioadl_flags = IPR_IOADL_FLAGS_READ;
6678
6679 ioarcb->data_transfer_length = cpu_to_be32(len);
6680 ioarcb->ioadl_len =
6681 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6682 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6683 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6684
6685 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6686 ioadl64->flags = cpu_to_be32(ioadl_flags);
6687 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6688 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6689
6690 last_ioadl64 = ioadl64;
6691 ioadl64++;
6692 }
6693
6694 if (likely(last_ioadl64))
6695 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6696 }
6697
6698 /**
6699 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6700 * @ipr_cmd: ipr command struct
6701 * @qc: ATA queued command
6702 *
6703 **/
6704 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6705 struct ata_queued_cmd *qc)
6706 {
6707 u32 ioadl_flags = 0;
6708 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6709 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6710 struct ipr_ioadl_desc *last_ioadl = NULL;
6711 int len = qc->nbytes;
6712 struct scatterlist *sg;
6713 unsigned int si;
6714
6715 if (len == 0)
6716 return;
6717
6718 if (qc->dma_dir == DMA_TO_DEVICE) {
6719 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6720 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6721 ioarcb->data_transfer_length = cpu_to_be32(len);
6722 ioarcb->ioadl_len =
6723 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6724 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6725 ioadl_flags = IPR_IOADL_FLAGS_READ;
6726 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6727 ioarcb->read_ioadl_len =
6728 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6729 }
6730
6731 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6732 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6733 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6734
6735 last_ioadl = ioadl;
6736 ioadl++;
6737 }
6738
6739 if (likely(last_ioadl))
6740 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6741 }
6742
6743 /**
6744 * ipr_qc_defer - Get a free ipr_cmd
6745 * @qc: queued command
6746 *
6747 * Return value:
6748 * 0 if success
6749 **/
6750 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6751 {
6752 struct ata_port *ap = qc->ap;
6753 struct ipr_sata_port *sata_port = ap->private_data;
6754 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6755 struct ipr_cmnd *ipr_cmd;
6756 struct ipr_hrr_queue *hrrq;
6757 int hrrq_id;
6758
6759 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6760 hrrq = &ioa_cfg->hrrq[hrrq_id];
6761
6762 qc->lldd_task = NULL;
6763 spin_lock(&hrrq->_lock);
6764 if (unlikely(hrrq->ioa_is_dead)) {
6765 spin_unlock(&hrrq->_lock);
6766 return 0;
6767 }
6768
6769 if (unlikely(!hrrq->allow_cmds)) {
6770 spin_unlock(&hrrq->_lock);
6771 return ATA_DEFER_LINK;
6772 }
6773
6774 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6775 if (ipr_cmd == NULL) {
6776 spin_unlock(&hrrq->_lock);
6777 return ATA_DEFER_LINK;
6778 }
6779
6780 qc->lldd_task = ipr_cmd;
6781 spin_unlock(&hrrq->_lock);
6782 return 0;
6783 }
6784
6785 /**
6786 * ipr_qc_issue - Issue a SATA qc to a device
6787 * @qc: queued command
6788 *
6789 * Return value:
6790 * 0 if success
6791 **/
6792 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6793 {
6794 struct ata_port *ap = qc->ap;
6795 struct ipr_sata_port *sata_port = ap->private_data;
6796 struct ipr_resource_entry *res = sata_port->res;
6797 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6798 struct ipr_cmnd *ipr_cmd;
6799 struct ipr_ioarcb *ioarcb;
6800 struct ipr_ioarcb_ata_regs *regs;
6801
6802 if (qc->lldd_task == NULL)
6803 ipr_qc_defer(qc);
6804
6805 ipr_cmd = qc->lldd_task;
6806 if (ipr_cmd == NULL)
6807 return AC_ERR_SYSTEM;
6808
6809 qc->lldd_task = NULL;
6810 spin_lock(&ipr_cmd->hrrq->_lock);
6811 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6812 ipr_cmd->hrrq->ioa_is_dead)) {
6813 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6814 spin_unlock(&ipr_cmd->hrrq->_lock);
6815 return AC_ERR_SYSTEM;
6816 }
6817
6818 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6819 ioarcb = &ipr_cmd->ioarcb;
6820
6821 if (ioa_cfg->sis64) {
6822 regs = &ipr_cmd->i.ata_ioadl.regs;
6823 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6824 } else
6825 regs = &ioarcb->u.add_data.u.regs;
6826
6827 memset(regs, 0, sizeof(*regs));
6828 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6829
6830 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6831 ipr_cmd->qc = qc;
6832 ipr_cmd->done = ipr_sata_done;
6833 ipr_cmd->ioarcb.res_handle = res->res_handle;
6834 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6835 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6836 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6837 ipr_cmd->dma_use_sg = qc->n_elem;
6838
6839 if (ioa_cfg->sis64)
6840 ipr_build_ata_ioadl64(ipr_cmd, qc);
6841 else
6842 ipr_build_ata_ioadl(ipr_cmd, qc);
6843
6844 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6845 ipr_copy_sata_tf(regs, &qc->tf);
6846 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6847 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6848
6849 switch (qc->tf.protocol) {
6850 case ATA_PROT_NODATA:
6851 case ATA_PROT_PIO:
6852 break;
6853
6854 case ATA_PROT_DMA:
6855 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6856 break;
6857
6858 case ATAPI_PROT_PIO:
6859 case ATAPI_PROT_NODATA:
6860 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6861 break;
6862
6863 case ATAPI_PROT_DMA:
6864 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6865 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6866 break;
6867
6868 default:
6869 WARN_ON(1);
6870 spin_unlock(&ipr_cmd->hrrq->_lock);
6871 return AC_ERR_INVALID;
6872 }
6873
6874 ipr_send_command(ipr_cmd);
6875 spin_unlock(&ipr_cmd->hrrq->_lock);
6876
6877 return 0;
6878 }
6879
6880 /**
6881 * ipr_qc_fill_rtf - Read result TF
6882 * @qc: ATA queued command
6883 *
6884 * Return value:
6885 * true
6886 **/
6887 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6888 {
6889 struct ipr_sata_port *sata_port = qc->ap->private_data;
6890 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6891 struct ata_taskfile *tf = &qc->result_tf;
6892
6893 tf->feature = g->error;
6894 tf->nsect = g->nsect;
6895 tf->lbal = g->lbal;
6896 tf->lbam = g->lbam;
6897 tf->lbah = g->lbah;
6898 tf->device = g->device;
6899 tf->command = g->status;
6900 tf->hob_nsect = g->hob_nsect;
6901 tf->hob_lbal = g->hob_lbal;
6902 tf->hob_lbam = g->hob_lbam;
6903 tf->hob_lbah = g->hob_lbah;
6904
6905 return true;
6906 }
6907
6908 static struct ata_port_operations ipr_sata_ops = {
6909 .phy_reset = ipr_ata_phy_reset,
6910 .hardreset = ipr_sata_reset,
6911 .post_internal_cmd = ipr_ata_post_internal,
6912 .qc_prep = ata_noop_qc_prep,
6913 .qc_defer = ipr_qc_defer,
6914 .qc_issue = ipr_qc_issue,
6915 .qc_fill_rtf = ipr_qc_fill_rtf,
6916 .port_start = ata_sas_port_start,
6917 .port_stop = ata_sas_port_stop
6918 };
6919
6920 static struct ata_port_info sata_port_info = {
6921 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
6922 ATA_FLAG_SAS_HOST,
6923 .pio_mask = ATA_PIO4_ONLY,
6924 .mwdma_mask = ATA_MWDMA2,
6925 .udma_mask = ATA_UDMA6,
6926 .port_ops = &ipr_sata_ops
6927 };
6928
6929 #ifdef CONFIG_PPC_PSERIES
6930 static const u16 ipr_blocked_processors[] = {
6931 PVR_NORTHSTAR,
6932 PVR_PULSAR,
6933 PVR_POWER4,
6934 PVR_ICESTAR,
6935 PVR_SSTAR,
6936 PVR_POWER4p,
6937 PVR_630,
6938 PVR_630p
6939 };
6940
6941 /**
6942 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6943 * @ioa_cfg: ioa cfg struct
6944 *
6945 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6946 * certain pSeries hardware. This function determines if the given
6947 * adapter is in one of these confgurations or not.
6948 *
6949 * Return value:
6950 * 1 if adapter is not supported / 0 if adapter is supported
6951 **/
6952 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6953 {
6954 int i;
6955
6956 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6957 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6958 if (pvr_version_is(ipr_blocked_processors[i]))
6959 return 1;
6960 }
6961 }
6962 return 0;
6963 }
6964 #else
6965 #define ipr_invalid_adapter(ioa_cfg) 0
6966 #endif
6967
6968 /**
6969 * ipr_ioa_bringdown_done - IOA bring down completion.
6970 * @ipr_cmd: ipr command struct
6971 *
6972 * This function processes the completion of an adapter bring down.
6973 * It wakes any reset sleepers.
6974 *
6975 * Return value:
6976 * IPR_RC_JOB_RETURN
6977 **/
6978 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6979 {
6980 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6981 int i;
6982
6983 ENTER;
6984 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6985 ipr_trace;
6986 spin_unlock_irq(ioa_cfg->host->host_lock);
6987 scsi_unblock_requests(ioa_cfg->host);
6988 spin_lock_irq(ioa_cfg->host->host_lock);
6989 }
6990
6991 ioa_cfg->in_reset_reload = 0;
6992 ioa_cfg->reset_retries = 0;
6993 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6994 spin_lock(&ioa_cfg->hrrq[i]._lock);
6995 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6996 spin_unlock(&ioa_cfg->hrrq[i]._lock);
6997 }
6998 wmb();
6999
7000 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7001 wake_up_all(&ioa_cfg->reset_wait_q);
7002 LEAVE;
7003
7004 return IPR_RC_JOB_RETURN;
7005 }
7006
7007 /**
7008 * ipr_ioa_reset_done - IOA reset completion.
7009 * @ipr_cmd: ipr command struct
7010 *
7011 * This function processes the completion of an adapter reset.
7012 * It schedules any necessary mid-layer add/removes and
7013 * wakes any reset sleepers.
7014 *
7015 * Return value:
7016 * IPR_RC_JOB_RETURN
7017 **/
7018 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7019 {
7020 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7021 struct ipr_resource_entry *res;
7022 struct ipr_hostrcb *hostrcb, *temp;
7023 int i = 0, j;
7024
7025 ENTER;
7026 ioa_cfg->in_reset_reload = 0;
7027 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7028 spin_lock(&ioa_cfg->hrrq[j]._lock);
7029 ioa_cfg->hrrq[j].allow_cmds = 1;
7030 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7031 }
7032 wmb();
7033 ioa_cfg->reset_cmd = NULL;
7034 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7035
7036 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7037 if (res->add_to_ml || res->del_from_ml) {
7038 ipr_trace;
7039 break;
7040 }
7041 }
7042 schedule_work(&ioa_cfg->work_q);
7043
7044 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
7045 list_del(&hostrcb->queue);
7046 if (i++ < IPR_NUM_LOG_HCAMS)
7047 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
7048 else
7049 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
7050 }
7051
7052 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7053 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7054
7055 ioa_cfg->reset_retries = 0;
7056 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7057 wake_up_all(&ioa_cfg->reset_wait_q);
7058
7059 spin_unlock(ioa_cfg->host->host_lock);
7060 scsi_unblock_requests(ioa_cfg->host);
7061 spin_lock(ioa_cfg->host->host_lock);
7062
7063 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7064 scsi_block_requests(ioa_cfg->host);
7065
7066 schedule_work(&ioa_cfg->work_q);
7067 LEAVE;
7068 return IPR_RC_JOB_RETURN;
7069 }
7070
7071 /**
7072 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7073 * @supported_dev: supported device struct
7074 * @vpids: vendor product id struct
7075 *
7076 * Return value:
7077 * none
7078 **/
7079 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7080 struct ipr_std_inq_vpids *vpids)
7081 {
7082 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7083 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7084 supported_dev->num_records = 1;
7085 supported_dev->data_length =
7086 cpu_to_be16(sizeof(struct ipr_supported_device));
7087 supported_dev->reserved = 0;
7088 }
7089
7090 /**
7091 * ipr_set_supported_devs - Send Set Supported Devices for a device
7092 * @ipr_cmd: ipr command struct
7093 *
7094 * This function sends a Set Supported Devices to the adapter
7095 *
7096 * Return value:
7097 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7098 **/
7099 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7100 {
7101 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7102 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7103 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7104 struct ipr_resource_entry *res = ipr_cmd->u.res;
7105
7106 ipr_cmd->job_step = ipr_ioa_reset_done;
7107
7108 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7109 if (!ipr_is_scsi_disk(res))
7110 continue;
7111
7112 ipr_cmd->u.res = res;
7113 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7114
7115 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7116 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7117 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7118
7119 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7120 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7121 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7122 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7123
7124 ipr_init_ioadl(ipr_cmd,
7125 ioa_cfg->vpd_cbs_dma +
7126 offsetof(struct ipr_misc_cbs, supp_dev),
7127 sizeof(struct ipr_supported_device),
7128 IPR_IOADL_FLAGS_WRITE_LAST);
7129
7130 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7131 IPR_SET_SUP_DEVICE_TIMEOUT);
7132
7133 if (!ioa_cfg->sis64)
7134 ipr_cmd->job_step = ipr_set_supported_devs;
7135 LEAVE;
7136 return IPR_RC_JOB_RETURN;
7137 }
7138
7139 LEAVE;
7140 return IPR_RC_JOB_CONTINUE;
7141 }
7142
7143 /**
7144 * ipr_get_mode_page - Locate specified mode page
7145 * @mode_pages: mode page buffer
7146 * @page_code: page code to find
7147 * @len: minimum required length for mode page
7148 *
7149 * Return value:
7150 * pointer to mode page / NULL on failure
7151 **/
7152 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7153 u32 page_code, u32 len)
7154 {
7155 struct ipr_mode_page_hdr *mode_hdr;
7156 u32 page_length;
7157 u32 length;
7158
7159 if (!mode_pages || (mode_pages->hdr.length == 0))
7160 return NULL;
7161
7162 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7163 mode_hdr = (struct ipr_mode_page_hdr *)
7164 (mode_pages->data + mode_pages->hdr.block_desc_len);
7165
7166 while (length) {
7167 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7168 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7169 return mode_hdr;
7170 break;
7171 } else {
7172 page_length = (sizeof(struct ipr_mode_page_hdr) +
7173 mode_hdr->page_length);
7174 length -= page_length;
7175 mode_hdr = (struct ipr_mode_page_hdr *)
7176 ((unsigned long)mode_hdr + page_length);
7177 }
7178 }
7179 return NULL;
7180 }
7181
7182 /**
7183 * ipr_check_term_power - Check for term power errors
7184 * @ioa_cfg: ioa config struct
7185 * @mode_pages: IOAFP mode pages buffer
7186 *
7187 * Check the IOAFP's mode page 28 for term power errors
7188 *
7189 * Return value:
7190 * nothing
7191 **/
7192 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7193 struct ipr_mode_pages *mode_pages)
7194 {
7195 int i;
7196 int entry_length;
7197 struct ipr_dev_bus_entry *bus;
7198 struct ipr_mode_page28 *mode_page;
7199
7200 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7201 sizeof(struct ipr_mode_page28));
7202
7203 entry_length = mode_page->entry_length;
7204
7205 bus = mode_page->bus;
7206
7207 for (i = 0; i < mode_page->num_entries; i++) {
7208 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7209 dev_err(&ioa_cfg->pdev->dev,
7210 "Term power is absent on scsi bus %d\n",
7211 bus->res_addr.bus);
7212 }
7213
7214 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7215 }
7216 }
7217
7218 /**
7219 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7220 * @ioa_cfg: ioa config struct
7221 *
7222 * Looks through the config table checking for SES devices. If
7223 * the SES device is in the SES table indicating a maximum SCSI
7224 * bus speed, the speed is limited for the bus.
7225 *
7226 * Return value:
7227 * none
7228 **/
7229 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7230 {
7231 u32 max_xfer_rate;
7232 int i;
7233
7234 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7235 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7236 ioa_cfg->bus_attr[i].bus_width);
7237
7238 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7239 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7240 }
7241 }
7242
7243 /**
7244 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7245 * @ioa_cfg: ioa config struct
7246 * @mode_pages: mode page 28 buffer
7247 *
7248 * Updates mode page 28 based on driver configuration
7249 *
7250 * Return value:
7251 * none
7252 **/
7253 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7254 struct ipr_mode_pages *mode_pages)
7255 {
7256 int i, entry_length;
7257 struct ipr_dev_bus_entry *bus;
7258 struct ipr_bus_attributes *bus_attr;
7259 struct ipr_mode_page28 *mode_page;
7260
7261 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7262 sizeof(struct ipr_mode_page28));
7263
7264 entry_length = mode_page->entry_length;
7265
7266 /* Loop for each device bus entry */
7267 for (i = 0, bus = mode_page->bus;
7268 i < mode_page->num_entries;
7269 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7270 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7271 dev_err(&ioa_cfg->pdev->dev,
7272 "Invalid resource address reported: 0x%08X\n",
7273 IPR_GET_PHYS_LOC(bus->res_addr));
7274 continue;
7275 }
7276
7277 bus_attr = &ioa_cfg->bus_attr[i];
7278 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7279 bus->bus_width = bus_attr->bus_width;
7280 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7281 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7282 if (bus_attr->qas_enabled)
7283 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7284 else
7285 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7286 }
7287 }
7288
7289 /**
7290 * ipr_build_mode_select - Build a mode select command
7291 * @ipr_cmd: ipr command struct
7292 * @res_handle: resource handle to send command to
7293 * @parm: Byte 2 of Mode Sense command
7294 * @dma_addr: DMA buffer address
7295 * @xfer_len: data transfer length
7296 *
7297 * Return value:
7298 * none
7299 **/
7300 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7301 __be32 res_handle, u8 parm,
7302 dma_addr_t dma_addr, u8 xfer_len)
7303 {
7304 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7305
7306 ioarcb->res_handle = res_handle;
7307 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7308 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7309 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7310 ioarcb->cmd_pkt.cdb[1] = parm;
7311 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7312
7313 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7314 }
7315
7316 /**
7317 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7318 * @ipr_cmd: ipr command struct
7319 *
7320 * This function sets up the SCSI bus attributes and sends
7321 * a Mode Select for Page 28 to activate them.
7322 *
7323 * Return value:
7324 * IPR_RC_JOB_RETURN
7325 **/
7326 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7327 {
7328 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7329 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7330 int length;
7331
7332 ENTER;
7333 ipr_scsi_bus_speed_limit(ioa_cfg);
7334 ipr_check_term_power(ioa_cfg, mode_pages);
7335 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7336 length = mode_pages->hdr.length + 1;
7337 mode_pages->hdr.length = 0;
7338
7339 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7340 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7341 length);
7342
7343 ipr_cmd->job_step = ipr_set_supported_devs;
7344 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7345 struct ipr_resource_entry, queue);
7346 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7347
7348 LEAVE;
7349 return IPR_RC_JOB_RETURN;
7350 }
7351
7352 /**
7353 * ipr_build_mode_sense - Builds a mode sense command
7354 * @ipr_cmd: ipr command struct
7355 * @res: resource entry struct
7356 * @parm: Byte 2 of mode sense command
7357 * @dma_addr: DMA address of mode sense buffer
7358 * @xfer_len: Size of DMA buffer
7359 *
7360 * Return value:
7361 * none
7362 **/
7363 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7364 __be32 res_handle,
7365 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7366 {
7367 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7368
7369 ioarcb->res_handle = res_handle;
7370 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7371 ioarcb->cmd_pkt.cdb[2] = parm;
7372 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7373 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7374
7375 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7376 }
7377
7378 /**
7379 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7380 * @ipr_cmd: ipr command struct
7381 *
7382 * This function handles the failure of an IOA bringup command.
7383 *
7384 * Return value:
7385 * IPR_RC_JOB_RETURN
7386 **/
7387 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7388 {
7389 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7390 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7391
7392 dev_err(&ioa_cfg->pdev->dev,
7393 "0x%02X failed with IOASC: 0x%08X\n",
7394 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7395
7396 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7397 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7398 return IPR_RC_JOB_RETURN;
7399 }
7400
7401 /**
7402 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7403 * @ipr_cmd: ipr command struct
7404 *
7405 * This function handles the failure of a Mode Sense to the IOAFP.
7406 * Some adapters do not handle all mode pages.
7407 *
7408 * Return value:
7409 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7410 **/
7411 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7412 {
7413 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7414 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7415
7416 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7417 ipr_cmd->job_step = ipr_set_supported_devs;
7418 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7419 struct ipr_resource_entry, queue);
7420 return IPR_RC_JOB_CONTINUE;
7421 }
7422
7423 return ipr_reset_cmd_failed(ipr_cmd);
7424 }
7425
7426 /**
7427 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7428 * @ipr_cmd: ipr command struct
7429 *
7430 * This function send a Page 28 mode sense to the IOA to
7431 * retrieve SCSI bus attributes.
7432 *
7433 * Return value:
7434 * IPR_RC_JOB_RETURN
7435 **/
7436 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7437 {
7438 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7439
7440 ENTER;
7441 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7442 0x28, ioa_cfg->vpd_cbs_dma +
7443 offsetof(struct ipr_misc_cbs, mode_pages),
7444 sizeof(struct ipr_mode_pages));
7445
7446 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7447 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7448
7449 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7450
7451 LEAVE;
7452 return IPR_RC_JOB_RETURN;
7453 }
7454
7455 /**
7456 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7457 * @ipr_cmd: ipr command struct
7458 *
7459 * This function enables dual IOA RAID support if possible.
7460 *
7461 * Return value:
7462 * IPR_RC_JOB_RETURN
7463 **/
7464 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7465 {
7466 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7467 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7468 struct ipr_mode_page24 *mode_page;
7469 int length;
7470
7471 ENTER;
7472 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7473 sizeof(struct ipr_mode_page24));
7474
7475 if (mode_page)
7476 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7477
7478 length = mode_pages->hdr.length + 1;
7479 mode_pages->hdr.length = 0;
7480
7481 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7482 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7483 length);
7484
7485 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7486 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7487
7488 LEAVE;
7489 return IPR_RC_JOB_RETURN;
7490 }
7491
7492 /**
7493 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7494 * @ipr_cmd: ipr command struct
7495 *
7496 * This function handles the failure of a Mode Sense to the IOAFP.
7497 * Some adapters do not handle all mode pages.
7498 *
7499 * Return value:
7500 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7501 **/
7502 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7503 {
7504 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7505
7506 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7507 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7508 return IPR_RC_JOB_CONTINUE;
7509 }
7510
7511 return ipr_reset_cmd_failed(ipr_cmd);
7512 }
7513
7514 /**
7515 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7516 * @ipr_cmd: ipr command struct
7517 *
7518 * This function send a mode sense to the IOA to retrieve
7519 * the IOA Advanced Function Control mode page.
7520 *
7521 * Return value:
7522 * IPR_RC_JOB_RETURN
7523 **/
7524 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7525 {
7526 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7527
7528 ENTER;
7529 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7530 0x24, ioa_cfg->vpd_cbs_dma +
7531 offsetof(struct ipr_misc_cbs, mode_pages),
7532 sizeof(struct ipr_mode_pages));
7533
7534 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7535 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7536
7537 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7538
7539 LEAVE;
7540 return IPR_RC_JOB_RETURN;
7541 }
7542
7543 /**
7544 * ipr_init_res_table - Initialize the resource table
7545 * @ipr_cmd: ipr command struct
7546 *
7547 * This function looks through the existing resource table, comparing
7548 * it with the config table. This function will take care of old/new
7549 * devices and schedule adding/removing them from the mid-layer
7550 * as appropriate.
7551 *
7552 * Return value:
7553 * IPR_RC_JOB_CONTINUE
7554 **/
7555 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7556 {
7557 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7558 struct ipr_resource_entry *res, *temp;
7559 struct ipr_config_table_entry_wrapper cfgtew;
7560 int entries, found, flag, i;
7561 LIST_HEAD(old_res);
7562
7563 ENTER;
7564 if (ioa_cfg->sis64)
7565 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7566 else
7567 flag = ioa_cfg->u.cfg_table->hdr.flags;
7568
7569 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7570 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7571
7572 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7573 list_move_tail(&res->queue, &old_res);
7574
7575 if (ioa_cfg->sis64)
7576 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7577 else
7578 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7579
7580 for (i = 0; i < entries; i++) {
7581 if (ioa_cfg->sis64)
7582 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7583 else
7584 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7585 found = 0;
7586
7587 list_for_each_entry_safe(res, temp, &old_res, queue) {
7588 if (ipr_is_same_device(res, &cfgtew)) {
7589 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7590 found = 1;
7591 break;
7592 }
7593 }
7594
7595 if (!found) {
7596 if (list_empty(&ioa_cfg->free_res_q)) {
7597 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7598 break;
7599 }
7600
7601 found = 1;
7602 res = list_entry(ioa_cfg->free_res_q.next,
7603 struct ipr_resource_entry, queue);
7604 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7605 ipr_init_res_entry(res, &cfgtew);
7606 res->add_to_ml = 1;
7607 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7608 res->sdev->allow_restart = 1;
7609
7610 if (found)
7611 ipr_update_res_entry(res, &cfgtew);
7612 }
7613
7614 list_for_each_entry_safe(res, temp, &old_res, queue) {
7615 if (res->sdev) {
7616 res->del_from_ml = 1;
7617 res->res_handle = IPR_INVALID_RES_HANDLE;
7618 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7619 }
7620 }
7621
7622 list_for_each_entry_safe(res, temp, &old_res, queue) {
7623 ipr_clear_res_target(res);
7624 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7625 }
7626
7627 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7628 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7629 else
7630 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7631
7632 LEAVE;
7633 return IPR_RC_JOB_CONTINUE;
7634 }
7635
7636 /**
7637 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7638 * @ipr_cmd: ipr command struct
7639 *
7640 * This function sends a Query IOA Configuration command
7641 * to the adapter to retrieve the IOA configuration table.
7642 *
7643 * Return value:
7644 * IPR_RC_JOB_RETURN
7645 **/
7646 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7647 {
7648 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7649 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7650 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7651 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7652
7653 ENTER;
7654 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7655 ioa_cfg->dual_raid = 1;
7656 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7657 ucode_vpd->major_release, ucode_vpd->card_type,
7658 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7659 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7660 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7661
7662 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7663 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7664 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7665 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7666
7667 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7668 IPR_IOADL_FLAGS_READ_LAST);
7669
7670 ipr_cmd->job_step = ipr_init_res_table;
7671
7672 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7673
7674 LEAVE;
7675 return IPR_RC_JOB_RETURN;
7676 }
7677
7678 /**
7679 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7680 * @ipr_cmd: ipr command struct
7681 *
7682 * This utility function sends an inquiry to the adapter.
7683 *
7684 * Return value:
7685 * none
7686 **/
7687 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7688 dma_addr_t dma_addr, u8 xfer_len)
7689 {
7690 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7691
7692 ENTER;
7693 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7694 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7695
7696 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7697 ioarcb->cmd_pkt.cdb[1] = flags;
7698 ioarcb->cmd_pkt.cdb[2] = page;
7699 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7700
7701 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7702
7703 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7704 LEAVE;
7705 }
7706
7707 /**
7708 * ipr_inquiry_page_supported - Is the given inquiry page supported
7709 * @page0: inquiry page 0 buffer
7710 * @page: page code.
7711 *
7712 * This function determines if the specified inquiry page is supported.
7713 *
7714 * Return value:
7715 * 1 if page is supported / 0 if not
7716 **/
7717 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7718 {
7719 int i;
7720
7721 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7722 if (page0->page[i] == page)
7723 return 1;
7724
7725 return 0;
7726 }
7727
7728 /**
7729 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7730 * @ipr_cmd: ipr command struct
7731 *
7732 * This function sends a Page 0xC4 inquiry to the adapter
7733 * to retrieve software VPD information.
7734 *
7735 * Return value:
7736 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7737 **/
7738 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7739 {
7740 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7741 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7742 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7743
7744 ENTER;
7745 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7746 memset(pageC4, 0, sizeof(*pageC4));
7747
7748 if (ipr_inquiry_page_supported(page0, 0xC4)) {
7749 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7750 (ioa_cfg->vpd_cbs_dma
7751 + offsetof(struct ipr_misc_cbs,
7752 pageC4_data)),
7753 sizeof(struct ipr_inquiry_pageC4));
7754 return IPR_RC_JOB_RETURN;
7755 }
7756
7757 LEAVE;
7758 return IPR_RC_JOB_CONTINUE;
7759 }
7760
7761 /**
7762 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7763 * @ipr_cmd: ipr command struct
7764 *
7765 * This function sends a Page 0xD0 inquiry to the adapter
7766 * to retrieve adapter capabilities.
7767 *
7768 * Return value:
7769 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7770 **/
7771 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7772 {
7773 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7774 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7775 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7776
7777 ENTER;
7778 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7779 memset(cap, 0, sizeof(*cap));
7780
7781 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7782 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7783 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7784 sizeof(struct ipr_inquiry_cap));
7785 return IPR_RC_JOB_RETURN;
7786 }
7787
7788 LEAVE;
7789 return IPR_RC_JOB_CONTINUE;
7790 }
7791
7792 /**
7793 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7794 * @ipr_cmd: ipr command struct
7795 *
7796 * This function sends a Page 3 inquiry to the adapter
7797 * to retrieve software VPD information.
7798 *
7799 * Return value:
7800 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7801 **/
7802 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7803 {
7804 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7805
7806 ENTER;
7807
7808 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7809
7810 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7811 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7812 sizeof(struct ipr_inquiry_page3));
7813
7814 LEAVE;
7815 return IPR_RC_JOB_RETURN;
7816 }
7817
7818 /**
7819 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7820 * @ipr_cmd: ipr command struct
7821 *
7822 * This function sends a Page 0 inquiry to the adapter
7823 * to retrieve supported inquiry pages.
7824 *
7825 * Return value:
7826 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7827 **/
7828 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7829 {
7830 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7831 char type[5];
7832
7833 ENTER;
7834
7835 /* Grab the type out of the VPD and store it away */
7836 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7837 type[4] = '\0';
7838 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7839
7840 if (ipr_invalid_adapter(ioa_cfg)) {
7841 dev_err(&ioa_cfg->pdev->dev,
7842 "Adapter not supported in this hardware configuration.\n");
7843
7844 if (!ipr_testmode) {
7845 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7846 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7847 list_add_tail(&ipr_cmd->queue,
7848 &ioa_cfg->hrrq->hrrq_free_q);
7849 return IPR_RC_JOB_RETURN;
7850 }
7851 }
7852
7853 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7854
7855 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7856 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7857 sizeof(struct ipr_inquiry_page0));
7858
7859 LEAVE;
7860 return IPR_RC_JOB_RETURN;
7861 }
7862
7863 /**
7864 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7865 * @ipr_cmd: ipr command struct
7866 *
7867 * This function sends a standard inquiry to the adapter.
7868 *
7869 * Return value:
7870 * IPR_RC_JOB_RETURN
7871 **/
7872 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7873 {
7874 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7875
7876 ENTER;
7877 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7878
7879 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7880 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7881 sizeof(struct ipr_ioa_vpd));
7882
7883 LEAVE;
7884 return IPR_RC_JOB_RETURN;
7885 }
7886
7887 /**
7888 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7889 * @ipr_cmd: ipr command struct
7890 *
7891 * This function send an Identify Host Request Response Queue
7892 * command to establish the HRRQ with the adapter.
7893 *
7894 * Return value:
7895 * IPR_RC_JOB_RETURN
7896 **/
7897 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7898 {
7899 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7900 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7901 struct ipr_hrr_queue *hrrq;
7902
7903 ENTER;
7904 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7905 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7906
7907 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7908 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7909
7910 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7911 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7912
7913 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7914 if (ioa_cfg->sis64)
7915 ioarcb->cmd_pkt.cdb[1] = 0x1;
7916
7917 if (ioa_cfg->nvectors == 1)
7918 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7919 else
7920 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7921
7922 ioarcb->cmd_pkt.cdb[2] =
7923 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7924 ioarcb->cmd_pkt.cdb[3] =
7925 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7926 ioarcb->cmd_pkt.cdb[4] =
7927 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7928 ioarcb->cmd_pkt.cdb[5] =
7929 ((u64) hrrq->host_rrq_dma) & 0xff;
7930 ioarcb->cmd_pkt.cdb[7] =
7931 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7932 ioarcb->cmd_pkt.cdb[8] =
7933 (sizeof(u32) * hrrq->size) & 0xff;
7934
7935 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7936 ioarcb->cmd_pkt.cdb[9] =
7937 ioa_cfg->identify_hrrq_index;
7938
7939 if (ioa_cfg->sis64) {
7940 ioarcb->cmd_pkt.cdb[10] =
7941 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
7942 ioarcb->cmd_pkt.cdb[11] =
7943 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
7944 ioarcb->cmd_pkt.cdb[12] =
7945 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
7946 ioarcb->cmd_pkt.cdb[13] =
7947 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
7948 }
7949
7950 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7951 ioarcb->cmd_pkt.cdb[14] =
7952 ioa_cfg->identify_hrrq_index;
7953
7954 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7955 IPR_INTERNAL_TIMEOUT);
7956
7957 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
7958 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7959
7960 LEAVE;
7961 return IPR_RC_JOB_RETURN;
7962 }
7963
7964 LEAVE;
7965 return IPR_RC_JOB_CONTINUE;
7966 }
7967
7968 /**
7969 * ipr_reset_timer_done - Adapter reset timer function
7970 * @ipr_cmd: ipr command struct
7971 *
7972 * Description: This function is used in adapter reset processing
7973 * for timing events. If the reset_cmd pointer in the IOA
7974 * config struct is not this adapter's we are doing nested
7975 * resets and fail_all_ops will take care of freeing the
7976 * command block.
7977 *
7978 * Return value:
7979 * none
7980 **/
7981 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7982 {
7983 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7984 unsigned long lock_flags = 0;
7985
7986 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7987
7988 if (ioa_cfg->reset_cmd == ipr_cmd) {
7989 list_del(&ipr_cmd->queue);
7990 ipr_cmd->done(ipr_cmd);
7991 }
7992
7993 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7994 }
7995
7996 /**
7997 * ipr_reset_start_timer - Start a timer for adapter reset job
7998 * @ipr_cmd: ipr command struct
7999 * @timeout: timeout value
8000 *
8001 * Description: This function is used in adapter reset processing
8002 * for timing events. If the reset_cmd pointer in the IOA
8003 * config struct is not this adapter's we are doing nested
8004 * resets and fail_all_ops will take care of freeing the
8005 * command block.
8006 *
8007 * Return value:
8008 * none
8009 **/
8010 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8011 unsigned long timeout)
8012 {
8013
8014 ENTER;
8015 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8016 ipr_cmd->done = ipr_reset_ioa_job;
8017
8018 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8019 ipr_cmd->timer.expires = jiffies + timeout;
8020 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8021 add_timer(&ipr_cmd->timer);
8022 }
8023
8024 /**
8025 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8026 * @ioa_cfg: ioa cfg struct
8027 *
8028 * Return value:
8029 * nothing
8030 **/
8031 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8032 {
8033 struct ipr_hrr_queue *hrrq;
8034
8035 for_each_hrrq(hrrq, ioa_cfg) {
8036 spin_lock(&hrrq->_lock);
8037 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8038
8039 /* Initialize Host RRQ pointers */
8040 hrrq->hrrq_start = hrrq->host_rrq;
8041 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8042 hrrq->hrrq_curr = hrrq->hrrq_start;
8043 hrrq->toggle_bit = 1;
8044 spin_unlock(&hrrq->_lock);
8045 }
8046 wmb();
8047
8048 ioa_cfg->identify_hrrq_index = 0;
8049 if (ioa_cfg->hrrq_num == 1)
8050 atomic_set(&ioa_cfg->hrrq_index, 0);
8051 else
8052 atomic_set(&ioa_cfg->hrrq_index, 1);
8053
8054 /* Zero out config table */
8055 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8056 }
8057
8058 /**
8059 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8060 * @ipr_cmd: ipr command struct
8061 *
8062 * Return value:
8063 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8064 **/
8065 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8066 {
8067 unsigned long stage, stage_time;
8068 u32 feedback;
8069 volatile u32 int_reg;
8070 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8071 u64 maskval = 0;
8072
8073 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8074 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8075 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8076
8077 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8078
8079 /* sanity check the stage_time value */
8080 if (stage_time == 0)
8081 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8082 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8083 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8084 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8085 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8086
8087 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8088 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8089 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8090 stage_time = ioa_cfg->transop_timeout;
8091 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8092 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8093 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8094 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8095 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8096 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8097 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8098 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8099 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8100 return IPR_RC_JOB_CONTINUE;
8101 }
8102 }
8103
8104 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8105 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8106 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8107 ipr_cmd->done = ipr_reset_ioa_job;
8108 add_timer(&ipr_cmd->timer);
8109
8110 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8111
8112 return IPR_RC_JOB_RETURN;
8113 }
8114
8115 /**
8116 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8117 * @ipr_cmd: ipr command struct
8118 *
8119 * This function reinitializes some control blocks and
8120 * enables destructive diagnostics on the adapter.
8121 *
8122 * Return value:
8123 * IPR_RC_JOB_RETURN
8124 **/
8125 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8126 {
8127 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8128 volatile u32 int_reg;
8129 volatile u64 maskval;
8130 int i;
8131
8132 ENTER;
8133 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8134 ipr_init_ioa_mem(ioa_cfg);
8135
8136 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8137 spin_lock(&ioa_cfg->hrrq[i]._lock);
8138 ioa_cfg->hrrq[i].allow_interrupts = 1;
8139 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8140 }
8141 wmb();
8142 if (ioa_cfg->sis64) {
8143 /* Set the adapter to the correct endian mode. */
8144 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8145 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8146 }
8147
8148 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8149
8150 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8151 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8152 ioa_cfg->regs.clr_interrupt_mask_reg32);
8153 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8154 return IPR_RC_JOB_CONTINUE;
8155 }
8156
8157 /* Enable destructive diagnostics on IOA */
8158 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8159
8160 if (ioa_cfg->sis64) {
8161 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8162 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8163 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8164 } else
8165 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8166
8167 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8168
8169 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8170
8171 if (ioa_cfg->sis64) {
8172 ipr_cmd->job_step = ipr_reset_next_stage;
8173 return IPR_RC_JOB_CONTINUE;
8174 }
8175
8176 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8177 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8178 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8179 ipr_cmd->done = ipr_reset_ioa_job;
8180 add_timer(&ipr_cmd->timer);
8181 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8182
8183 LEAVE;
8184 return IPR_RC_JOB_RETURN;
8185 }
8186
8187 /**
8188 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8189 * @ipr_cmd: ipr command struct
8190 *
8191 * This function is invoked when an adapter dump has run out
8192 * of processing time.
8193 *
8194 * Return value:
8195 * IPR_RC_JOB_CONTINUE
8196 **/
8197 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8198 {
8199 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8200
8201 if (ioa_cfg->sdt_state == GET_DUMP)
8202 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8203 else if (ioa_cfg->sdt_state == READ_DUMP)
8204 ioa_cfg->sdt_state = ABORT_DUMP;
8205
8206 ioa_cfg->dump_timeout = 1;
8207 ipr_cmd->job_step = ipr_reset_alert;
8208
8209 return IPR_RC_JOB_CONTINUE;
8210 }
8211
8212 /**
8213 * ipr_unit_check_no_data - Log a unit check/no data error log
8214 * @ioa_cfg: ioa config struct
8215 *
8216 * Logs an error indicating the adapter unit checked, but for some
8217 * reason, we were unable to fetch the unit check buffer.
8218 *
8219 * Return value:
8220 * nothing
8221 **/
8222 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8223 {
8224 ioa_cfg->errors_logged++;
8225 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8226 }
8227
8228 /**
8229 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8230 * @ioa_cfg: ioa config struct
8231 *
8232 * Fetches the unit check buffer from the adapter by clocking the data
8233 * through the mailbox register.
8234 *
8235 * Return value:
8236 * nothing
8237 **/
8238 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8239 {
8240 unsigned long mailbox;
8241 struct ipr_hostrcb *hostrcb;
8242 struct ipr_uc_sdt sdt;
8243 int rc, length;
8244 u32 ioasc;
8245
8246 mailbox = readl(ioa_cfg->ioa_mailbox);
8247
8248 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8249 ipr_unit_check_no_data(ioa_cfg);
8250 return;
8251 }
8252
8253 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8254 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8255 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8256
8257 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8258 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8259 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8260 ipr_unit_check_no_data(ioa_cfg);
8261 return;
8262 }
8263
8264 /* Find length of the first sdt entry (UC buffer) */
8265 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8266 length = be32_to_cpu(sdt.entry[0].end_token);
8267 else
8268 length = (be32_to_cpu(sdt.entry[0].end_token) -
8269 be32_to_cpu(sdt.entry[0].start_token)) &
8270 IPR_FMT2_MBX_ADDR_MASK;
8271
8272 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8273 struct ipr_hostrcb, queue);
8274 list_del(&hostrcb->queue);
8275 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8276
8277 rc = ipr_get_ldump_data_section(ioa_cfg,
8278 be32_to_cpu(sdt.entry[0].start_token),
8279 (__be32 *)&hostrcb->hcam,
8280 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8281
8282 if (!rc) {
8283 ipr_handle_log_data(ioa_cfg, hostrcb);
8284 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8285 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8286 ioa_cfg->sdt_state == GET_DUMP)
8287 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8288 } else
8289 ipr_unit_check_no_data(ioa_cfg);
8290
8291 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8292 }
8293
8294 /**
8295 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8296 * @ipr_cmd: ipr command struct
8297 *
8298 * Description: This function will call to get the unit check buffer.
8299 *
8300 * Return value:
8301 * IPR_RC_JOB_RETURN
8302 **/
8303 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8304 {
8305 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8306
8307 ENTER;
8308 ioa_cfg->ioa_unit_checked = 0;
8309 ipr_get_unit_check_buffer(ioa_cfg);
8310 ipr_cmd->job_step = ipr_reset_alert;
8311 ipr_reset_start_timer(ipr_cmd, 0);
8312
8313 LEAVE;
8314 return IPR_RC_JOB_RETURN;
8315 }
8316
8317 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8318 {
8319 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8320
8321 ENTER;
8322
8323 if (ioa_cfg->sdt_state != GET_DUMP)
8324 return IPR_RC_JOB_RETURN;
8325
8326 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8327 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8328 IPR_PCII_MAILBOX_STABLE)) {
8329
8330 if (!ipr_cmd->u.time_left)
8331 dev_err(&ioa_cfg->pdev->dev,
8332 "Timed out waiting for Mailbox register.\n");
8333
8334 ioa_cfg->sdt_state = READ_DUMP;
8335 ioa_cfg->dump_timeout = 0;
8336 if (ioa_cfg->sis64)
8337 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8338 else
8339 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8340 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8341 schedule_work(&ioa_cfg->work_q);
8342
8343 } else {
8344 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8345 ipr_reset_start_timer(ipr_cmd,
8346 IPR_CHECK_FOR_RESET_TIMEOUT);
8347 }
8348
8349 LEAVE;
8350 return IPR_RC_JOB_RETURN;
8351 }
8352
8353 /**
8354 * ipr_reset_restore_cfg_space - Restore PCI config space.
8355 * @ipr_cmd: ipr command struct
8356 *
8357 * Description: This function restores the saved PCI config space of
8358 * the adapter, fails all outstanding ops back to the callers, and
8359 * fetches the dump/unit check if applicable to this reset.
8360 *
8361 * Return value:
8362 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8363 **/
8364 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8365 {
8366 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8367 u32 int_reg;
8368
8369 ENTER;
8370 ioa_cfg->pdev->state_saved = true;
8371 pci_restore_state(ioa_cfg->pdev);
8372
8373 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8374 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8375 return IPR_RC_JOB_CONTINUE;
8376 }
8377
8378 ipr_fail_all_ops(ioa_cfg);
8379
8380 if (ioa_cfg->sis64) {
8381 /* Set the adapter to the correct endian mode. */
8382 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8383 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8384 }
8385
8386 if (ioa_cfg->ioa_unit_checked) {
8387 if (ioa_cfg->sis64) {
8388 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8389 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8390 return IPR_RC_JOB_RETURN;
8391 } else {
8392 ioa_cfg->ioa_unit_checked = 0;
8393 ipr_get_unit_check_buffer(ioa_cfg);
8394 ipr_cmd->job_step = ipr_reset_alert;
8395 ipr_reset_start_timer(ipr_cmd, 0);
8396 return IPR_RC_JOB_RETURN;
8397 }
8398 }
8399
8400 if (ioa_cfg->in_ioa_bringdown) {
8401 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8402 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8403 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8404 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8405 } else {
8406 ipr_cmd->job_step = ipr_reset_enable_ioa;
8407 }
8408
8409 LEAVE;
8410 return IPR_RC_JOB_CONTINUE;
8411 }
8412
8413 /**
8414 * ipr_reset_bist_done - BIST has completed on the adapter.
8415 * @ipr_cmd: ipr command struct
8416 *
8417 * Description: Unblock config space and resume the reset process.
8418 *
8419 * Return value:
8420 * IPR_RC_JOB_CONTINUE
8421 **/
8422 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8423 {
8424 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8425
8426 ENTER;
8427 if (ioa_cfg->cfg_locked)
8428 pci_cfg_access_unlock(ioa_cfg->pdev);
8429 ioa_cfg->cfg_locked = 0;
8430 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8431 LEAVE;
8432 return IPR_RC_JOB_CONTINUE;
8433 }
8434
8435 /**
8436 * ipr_reset_start_bist - Run BIST on the adapter.
8437 * @ipr_cmd: ipr command struct
8438 *
8439 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8440 *
8441 * Return value:
8442 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8443 **/
8444 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8445 {
8446 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8447 int rc = PCIBIOS_SUCCESSFUL;
8448
8449 ENTER;
8450 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8451 writel(IPR_UPROCI_SIS64_START_BIST,
8452 ioa_cfg->regs.set_uproc_interrupt_reg32);
8453 else
8454 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8455
8456 if (rc == PCIBIOS_SUCCESSFUL) {
8457 ipr_cmd->job_step = ipr_reset_bist_done;
8458 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8459 rc = IPR_RC_JOB_RETURN;
8460 } else {
8461 if (ioa_cfg->cfg_locked)
8462 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8463 ioa_cfg->cfg_locked = 0;
8464 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8465 rc = IPR_RC_JOB_CONTINUE;
8466 }
8467
8468 LEAVE;
8469 return rc;
8470 }
8471
8472 /**
8473 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8474 * @ipr_cmd: ipr command struct
8475 *
8476 * Description: This clears PCI reset to the adapter and delays two seconds.
8477 *
8478 * Return value:
8479 * IPR_RC_JOB_RETURN
8480 **/
8481 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8482 {
8483 ENTER;
8484 ipr_cmd->job_step = ipr_reset_bist_done;
8485 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8486 LEAVE;
8487 return IPR_RC_JOB_RETURN;
8488 }
8489
8490 /**
8491 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8492 * @work: work struct
8493 *
8494 * Description: This pulses warm reset to a slot.
8495 *
8496 **/
8497 static void ipr_reset_reset_work(struct work_struct *work)
8498 {
8499 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8500 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8501 struct pci_dev *pdev = ioa_cfg->pdev;
8502 unsigned long lock_flags = 0;
8503
8504 ENTER;
8505 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8506 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8507 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8508
8509 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8510 if (ioa_cfg->reset_cmd == ipr_cmd)
8511 ipr_reset_ioa_job(ipr_cmd);
8512 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8513 LEAVE;
8514 }
8515
8516 /**
8517 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8518 * @ipr_cmd: ipr command struct
8519 *
8520 * Description: This asserts PCI reset to the adapter.
8521 *
8522 * Return value:
8523 * IPR_RC_JOB_RETURN
8524 **/
8525 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8526 {
8527 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8528
8529 ENTER;
8530 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8531 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8532 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8533 LEAVE;
8534 return IPR_RC_JOB_RETURN;
8535 }
8536
8537 /**
8538 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8539 * @ipr_cmd: ipr command struct
8540 *
8541 * Description: This attempts to block config access to the IOA.
8542 *
8543 * Return value:
8544 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8545 **/
8546 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8547 {
8548 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8549 int rc = IPR_RC_JOB_CONTINUE;
8550
8551 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8552 ioa_cfg->cfg_locked = 1;
8553 ipr_cmd->job_step = ioa_cfg->reset;
8554 } else {
8555 if (ipr_cmd->u.time_left) {
8556 rc = IPR_RC_JOB_RETURN;
8557 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8558 ipr_reset_start_timer(ipr_cmd,
8559 IPR_CHECK_FOR_RESET_TIMEOUT);
8560 } else {
8561 ipr_cmd->job_step = ioa_cfg->reset;
8562 dev_err(&ioa_cfg->pdev->dev,
8563 "Timed out waiting to lock config access. Resetting anyway.\n");
8564 }
8565 }
8566
8567 return rc;
8568 }
8569
8570 /**
8571 * ipr_reset_block_config_access - Block config access to the IOA
8572 * @ipr_cmd: ipr command struct
8573 *
8574 * Description: This attempts to block config access to the IOA
8575 *
8576 * Return value:
8577 * IPR_RC_JOB_CONTINUE
8578 **/
8579 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8580 {
8581 ipr_cmd->ioa_cfg->cfg_locked = 0;
8582 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8583 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8584 return IPR_RC_JOB_CONTINUE;
8585 }
8586
8587 /**
8588 * ipr_reset_allowed - Query whether or not IOA can be reset
8589 * @ioa_cfg: ioa config struct
8590 *
8591 * Return value:
8592 * 0 if reset not allowed / non-zero if reset is allowed
8593 **/
8594 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8595 {
8596 volatile u32 temp_reg;
8597
8598 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8599 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8600 }
8601
8602 /**
8603 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8604 * @ipr_cmd: ipr command struct
8605 *
8606 * Description: This function waits for adapter permission to run BIST,
8607 * then runs BIST. If the adapter does not give permission after a
8608 * reasonable time, we will reset the adapter anyway. The impact of
8609 * resetting the adapter without warning the adapter is the risk of
8610 * losing the persistent error log on the adapter. If the adapter is
8611 * reset while it is writing to the flash on the adapter, the flash
8612 * segment will have bad ECC and be zeroed.
8613 *
8614 * Return value:
8615 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8616 **/
8617 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8618 {
8619 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8620 int rc = IPR_RC_JOB_RETURN;
8621
8622 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8623 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8624 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8625 } else {
8626 ipr_cmd->job_step = ipr_reset_block_config_access;
8627 rc = IPR_RC_JOB_CONTINUE;
8628 }
8629
8630 return rc;
8631 }
8632
8633 /**
8634 * ipr_reset_alert - Alert the adapter of a pending reset
8635 * @ipr_cmd: ipr command struct
8636 *
8637 * Description: This function alerts the adapter that it will be reset.
8638 * If memory space is not currently enabled, proceed directly
8639 * to running BIST on the adapter. The timer must always be started
8640 * so we guarantee we do not run BIST from ipr_isr.
8641 *
8642 * Return value:
8643 * IPR_RC_JOB_RETURN
8644 **/
8645 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8646 {
8647 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8648 u16 cmd_reg;
8649 int rc;
8650
8651 ENTER;
8652 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8653
8654 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8655 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8656 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8657 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8658 } else {
8659 ipr_cmd->job_step = ipr_reset_block_config_access;
8660 }
8661
8662 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8663 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8664
8665 LEAVE;
8666 return IPR_RC_JOB_RETURN;
8667 }
8668
8669 /**
8670 * ipr_reset_quiesce_done - Complete IOA disconnect
8671 * @ipr_cmd: ipr command struct
8672 *
8673 * Description: Freeze the adapter to complete quiesce processing
8674 *
8675 * Return value:
8676 * IPR_RC_JOB_CONTINUE
8677 **/
8678 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8679 {
8680 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8681
8682 ENTER;
8683 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8684 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8685 LEAVE;
8686 return IPR_RC_JOB_CONTINUE;
8687 }
8688
8689 /**
8690 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8691 * @ipr_cmd: ipr command struct
8692 *
8693 * Description: Ensure nothing is outstanding to the IOA and
8694 * proceed with IOA disconnect. Otherwise reset the IOA.
8695 *
8696 * Return value:
8697 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8698 **/
8699 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8700 {
8701 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8702 struct ipr_cmnd *loop_cmd;
8703 struct ipr_hrr_queue *hrrq;
8704 int rc = IPR_RC_JOB_CONTINUE;
8705 int count = 0;
8706
8707 ENTER;
8708 ipr_cmd->job_step = ipr_reset_quiesce_done;
8709
8710 for_each_hrrq(hrrq, ioa_cfg) {
8711 spin_lock(&hrrq->_lock);
8712 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8713 count++;
8714 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8715 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8716 rc = IPR_RC_JOB_RETURN;
8717 break;
8718 }
8719 spin_unlock(&hrrq->_lock);
8720
8721 if (count)
8722 break;
8723 }
8724
8725 LEAVE;
8726 return rc;
8727 }
8728
8729 /**
8730 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8731 * @ipr_cmd: ipr command struct
8732 *
8733 * Description: Cancel any oustanding HCAMs to the IOA.
8734 *
8735 * Return value:
8736 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8737 **/
8738 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8739 {
8740 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8741 int rc = IPR_RC_JOB_CONTINUE;
8742 struct ipr_cmd_pkt *cmd_pkt;
8743 struct ipr_cmnd *hcam_cmd;
8744 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8745
8746 ENTER;
8747 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8748
8749 if (!hrrq->ioa_is_dead) {
8750 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8751 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8752 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8753 continue;
8754
8755 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8756 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8757 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8758 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8759 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8760 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8761 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8762 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8763 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8764 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8765 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8766 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8767 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8768 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8769
8770 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8771 IPR_CANCEL_TIMEOUT);
8772
8773 rc = IPR_RC_JOB_RETURN;
8774 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8775 break;
8776 }
8777 }
8778 } else
8779 ipr_cmd->job_step = ipr_reset_alert;
8780
8781 LEAVE;
8782 return rc;
8783 }
8784
8785 /**
8786 * ipr_reset_ucode_download_done - Microcode download completion
8787 * @ipr_cmd: ipr command struct
8788 *
8789 * Description: This function unmaps the microcode download buffer.
8790 *
8791 * Return value:
8792 * IPR_RC_JOB_CONTINUE
8793 **/
8794 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8795 {
8796 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8797 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8798
8799 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8800 sglist->num_sg, DMA_TO_DEVICE);
8801
8802 ipr_cmd->job_step = ipr_reset_alert;
8803 return IPR_RC_JOB_CONTINUE;
8804 }
8805
8806 /**
8807 * ipr_reset_ucode_download - Download microcode to the adapter
8808 * @ipr_cmd: ipr command struct
8809 *
8810 * Description: This function checks to see if it there is microcode
8811 * to download to the adapter. If there is, a download is performed.
8812 *
8813 * Return value:
8814 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8815 **/
8816 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8817 {
8818 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8819 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8820
8821 ENTER;
8822 ipr_cmd->job_step = ipr_reset_alert;
8823
8824 if (!sglist)
8825 return IPR_RC_JOB_CONTINUE;
8826
8827 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8828 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8829 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8830 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8831 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8832 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8833 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8834
8835 if (ioa_cfg->sis64)
8836 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8837 else
8838 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8839 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8840
8841 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8842 IPR_WRITE_BUFFER_TIMEOUT);
8843
8844 LEAVE;
8845 return IPR_RC_JOB_RETURN;
8846 }
8847
8848 /**
8849 * ipr_reset_shutdown_ioa - Shutdown the adapter
8850 * @ipr_cmd: ipr command struct
8851 *
8852 * Description: This function issues an adapter shutdown of the
8853 * specified type to the specified adapter as part of the
8854 * adapter reset job.
8855 *
8856 * Return value:
8857 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8858 **/
8859 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8860 {
8861 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8862 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8863 unsigned long timeout;
8864 int rc = IPR_RC_JOB_CONTINUE;
8865
8866 ENTER;
8867 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8868 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8869 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8870 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8871 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8872 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8873 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8874 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8875
8876 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8877 timeout = IPR_SHUTDOWN_TIMEOUT;
8878 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8879 timeout = IPR_INTERNAL_TIMEOUT;
8880 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8881 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8882 else
8883 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8884
8885 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8886
8887 rc = IPR_RC_JOB_RETURN;
8888 ipr_cmd->job_step = ipr_reset_ucode_download;
8889 } else
8890 ipr_cmd->job_step = ipr_reset_alert;
8891
8892 LEAVE;
8893 return rc;
8894 }
8895
8896 /**
8897 * ipr_reset_ioa_job - Adapter reset job
8898 * @ipr_cmd: ipr command struct
8899 *
8900 * Description: This function is the job router for the adapter reset job.
8901 *
8902 * Return value:
8903 * none
8904 **/
8905 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8906 {
8907 u32 rc, ioasc;
8908 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8909
8910 do {
8911 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8912
8913 if (ioa_cfg->reset_cmd != ipr_cmd) {
8914 /*
8915 * We are doing nested adapter resets and this is
8916 * not the current reset job.
8917 */
8918 list_add_tail(&ipr_cmd->queue,
8919 &ipr_cmd->hrrq->hrrq_free_q);
8920 return;
8921 }
8922
8923 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8924 rc = ipr_cmd->job_step_failed(ipr_cmd);
8925 if (rc == IPR_RC_JOB_RETURN)
8926 return;
8927 }
8928
8929 ipr_reinit_ipr_cmnd(ipr_cmd);
8930 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8931 rc = ipr_cmd->job_step(ipr_cmd);
8932 } while (rc == IPR_RC_JOB_CONTINUE);
8933 }
8934
8935 /**
8936 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8937 * @ioa_cfg: ioa config struct
8938 * @job_step: first job step of reset job
8939 * @shutdown_type: shutdown type
8940 *
8941 * Description: This function will initiate the reset of the given adapter
8942 * starting at the selected job step.
8943 * If the caller needs to wait on the completion of the reset,
8944 * the caller must sleep on the reset_wait_q.
8945 *
8946 * Return value:
8947 * none
8948 **/
8949 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8950 int (*job_step) (struct ipr_cmnd *),
8951 enum ipr_shutdown_type shutdown_type)
8952 {
8953 struct ipr_cmnd *ipr_cmd;
8954 int i;
8955
8956 ioa_cfg->in_reset_reload = 1;
8957 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8958 spin_lock(&ioa_cfg->hrrq[i]._lock);
8959 ioa_cfg->hrrq[i].allow_cmds = 0;
8960 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8961 }
8962 wmb();
8963 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
8964 scsi_block_requests(ioa_cfg->host);
8965
8966 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
8967 ioa_cfg->reset_cmd = ipr_cmd;
8968 ipr_cmd->job_step = job_step;
8969 ipr_cmd->u.shutdown_type = shutdown_type;
8970
8971 ipr_reset_ioa_job(ipr_cmd);
8972 }
8973
8974 /**
8975 * ipr_initiate_ioa_reset - Initiate an adapter reset
8976 * @ioa_cfg: ioa config struct
8977 * @shutdown_type: shutdown type
8978 *
8979 * Description: This function will initiate the reset of the given adapter.
8980 * If the caller needs to wait on the completion of the reset,
8981 * the caller must sleep on the reset_wait_q.
8982 *
8983 * Return value:
8984 * none
8985 **/
8986 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8987 enum ipr_shutdown_type shutdown_type)
8988 {
8989 int i;
8990
8991 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
8992 return;
8993
8994 if (ioa_cfg->in_reset_reload) {
8995 if (ioa_cfg->sdt_state == GET_DUMP)
8996 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8997 else if (ioa_cfg->sdt_state == READ_DUMP)
8998 ioa_cfg->sdt_state = ABORT_DUMP;
8999 }
9000
9001 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9002 dev_err(&ioa_cfg->pdev->dev,
9003 "IOA taken offline - error recovery failed\n");
9004
9005 ioa_cfg->reset_retries = 0;
9006 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9007 spin_lock(&ioa_cfg->hrrq[i]._lock);
9008 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9009 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9010 }
9011 wmb();
9012
9013 if (ioa_cfg->in_ioa_bringdown) {
9014 ioa_cfg->reset_cmd = NULL;
9015 ioa_cfg->in_reset_reload = 0;
9016 ipr_fail_all_ops(ioa_cfg);
9017 wake_up_all(&ioa_cfg->reset_wait_q);
9018
9019 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9020 spin_unlock_irq(ioa_cfg->host->host_lock);
9021 scsi_unblock_requests(ioa_cfg->host);
9022 spin_lock_irq(ioa_cfg->host->host_lock);
9023 }
9024 return;
9025 } else {
9026 ioa_cfg->in_ioa_bringdown = 1;
9027 shutdown_type = IPR_SHUTDOWN_NONE;
9028 }
9029 }
9030
9031 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9032 shutdown_type);
9033 }
9034
9035 /**
9036 * ipr_reset_freeze - Hold off all I/O activity
9037 * @ipr_cmd: ipr command struct
9038 *
9039 * Description: If the PCI slot is frozen, hold off all I/O
9040 * activity; then, as soon as the slot is available again,
9041 * initiate an adapter reset.
9042 */
9043 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9044 {
9045 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9046 int i;
9047
9048 /* Disallow new interrupts, avoid loop */
9049 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9050 spin_lock(&ioa_cfg->hrrq[i]._lock);
9051 ioa_cfg->hrrq[i].allow_interrupts = 0;
9052 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9053 }
9054 wmb();
9055 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9056 ipr_cmd->done = ipr_reset_ioa_job;
9057 return IPR_RC_JOB_RETURN;
9058 }
9059
9060 /**
9061 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9062 * @pdev: PCI device struct
9063 *
9064 * Description: This routine is called to tell us that the MMIO
9065 * access to the IOA has been restored
9066 */
9067 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9068 {
9069 unsigned long flags = 0;
9070 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9071
9072 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9073 if (!ioa_cfg->probe_done)
9074 pci_save_state(pdev);
9075 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9076 return PCI_ERS_RESULT_NEED_RESET;
9077 }
9078
9079 /**
9080 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9081 * @pdev: PCI device struct
9082 *
9083 * Description: This routine is called to tell us that the PCI bus
9084 * is down. Can't do anything here, except put the device driver
9085 * into a holding pattern, waiting for the PCI bus to come back.
9086 */
9087 static void ipr_pci_frozen(struct pci_dev *pdev)
9088 {
9089 unsigned long flags = 0;
9090 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9091
9092 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9093 if (ioa_cfg->probe_done)
9094 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9095 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9096 }
9097
9098 /**
9099 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9100 * @pdev: PCI device struct
9101 *
9102 * Description: This routine is called by the pci error recovery
9103 * code after the PCI slot has been reset, just before we
9104 * should resume normal operations.
9105 */
9106 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9107 {
9108 unsigned long flags = 0;
9109 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9110
9111 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9112 if (ioa_cfg->probe_done) {
9113 if (ioa_cfg->needs_warm_reset)
9114 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9115 else
9116 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9117 IPR_SHUTDOWN_NONE);
9118 } else
9119 wake_up_all(&ioa_cfg->eeh_wait_q);
9120 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9121 return PCI_ERS_RESULT_RECOVERED;
9122 }
9123
9124 /**
9125 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9126 * @pdev: PCI device struct
9127 *
9128 * Description: This routine is called when the PCI bus has
9129 * permanently failed.
9130 */
9131 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9132 {
9133 unsigned long flags = 0;
9134 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9135 int i;
9136
9137 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9138 if (ioa_cfg->probe_done) {
9139 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9140 ioa_cfg->sdt_state = ABORT_DUMP;
9141 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9142 ioa_cfg->in_ioa_bringdown = 1;
9143 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9144 spin_lock(&ioa_cfg->hrrq[i]._lock);
9145 ioa_cfg->hrrq[i].allow_cmds = 0;
9146 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9147 }
9148 wmb();
9149 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9150 } else
9151 wake_up_all(&ioa_cfg->eeh_wait_q);
9152 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9153 }
9154
9155 /**
9156 * ipr_pci_error_detected - Called when a PCI error is detected.
9157 * @pdev: PCI device struct
9158 * @state: PCI channel state
9159 *
9160 * Description: Called when a PCI error is detected.
9161 *
9162 * Return value:
9163 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9164 */
9165 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9166 pci_channel_state_t state)
9167 {
9168 switch (state) {
9169 case pci_channel_io_frozen:
9170 ipr_pci_frozen(pdev);
9171 return PCI_ERS_RESULT_CAN_RECOVER;
9172 case pci_channel_io_perm_failure:
9173 ipr_pci_perm_failure(pdev);
9174 return PCI_ERS_RESULT_DISCONNECT;
9175 break;
9176 default:
9177 break;
9178 }
9179 return PCI_ERS_RESULT_NEED_RESET;
9180 }
9181
9182 /**
9183 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9184 * @ioa_cfg: ioa cfg struct
9185 *
9186 * Description: This is the second phase of adapter intialization
9187 * This function takes care of initilizing the adapter to the point
9188 * where it can accept new commands.
9189
9190 * Return value:
9191 * 0 on success / -EIO on failure
9192 **/
9193 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9194 {
9195 int rc = 0;
9196 unsigned long host_lock_flags = 0;
9197
9198 ENTER;
9199 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9200 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9201 ioa_cfg->probe_done = 1;
9202 if (ioa_cfg->needs_hard_reset) {
9203 ioa_cfg->needs_hard_reset = 0;
9204 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9205 } else
9206 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9207 IPR_SHUTDOWN_NONE);
9208 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9209
9210 LEAVE;
9211 return rc;
9212 }
9213
9214 /**
9215 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9216 * @ioa_cfg: ioa config struct
9217 *
9218 * Return value:
9219 * none
9220 **/
9221 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9222 {
9223 int i;
9224
9225 if (ioa_cfg->ipr_cmnd_list) {
9226 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9227 if (ioa_cfg->ipr_cmnd_list[i])
9228 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9229 ioa_cfg->ipr_cmnd_list[i],
9230 ioa_cfg->ipr_cmnd_list_dma[i]);
9231
9232 ioa_cfg->ipr_cmnd_list[i] = NULL;
9233 }
9234 }
9235
9236 if (ioa_cfg->ipr_cmd_pool)
9237 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9238
9239 kfree(ioa_cfg->ipr_cmnd_list);
9240 kfree(ioa_cfg->ipr_cmnd_list_dma);
9241 ioa_cfg->ipr_cmnd_list = NULL;
9242 ioa_cfg->ipr_cmnd_list_dma = NULL;
9243 ioa_cfg->ipr_cmd_pool = NULL;
9244 }
9245
9246 /**
9247 * ipr_free_mem - Frees memory allocated for an adapter
9248 * @ioa_cfg: ioa cfg struct
9249 *
9250 * Return value:
9251 * nothing
9252 **/
9253 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9254 {
9255 int i;
9256
9257 kfree(ioa_cfg->res_entries);
9258 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9259 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9260 ipr_free_cmd_blks(ioa_cfg);
9261
9262 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9263 dma_free_coherent(&ioa_cfg->pdev->dev,
9264 sizeof(u32) * ioa_cfg->hrrq[i].size,
9265 ioa_cfg->hrrq[i].host_rrq,
9266 ioa_cfg->hrrq[i].host_rrq_dma);
9267
9268 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9269 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9270
9271 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9272 dma_free_coherent(&ioa_cfg->pdev->dev,
9273 sizeof(struct ipr_hostrcb),
9274 ioa_cfg->hostrcb[i],
9275 ioa_cfg->hostrcb_dma[i]);
9276 }
9277
9278 ipr_free_dump(ioa_cfg);
9279 kfree(ioa_cfg->trace);
9280 }
9281
9282 /**
9283 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9284 * @ioa_cfg: ipr cfg struct
9285 *
9286 * This function frees all allocated IRQs for the
9287 * specified adapter.
9288 *
9289 * Return value:
9290 * none
9291 **/
9292 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9293 {
9294 struct pci_dev *pdev = ioa_cfg->pdev;
9295
9296 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9297 ioa_cfg->intr_flag == IPR_USE_MSIX) {
9298 int i;
9299 for (i = 0; i < ioa_cfg->nvectors; i++)
9300 free_irq(ioa_cfg->vectors_info[i].vec,
9301 &ioa_cfg->hrrq[i]);
9302 } else
9303 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
9304
9305 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9306 pci_disable_msi(pdev);
9307 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9308 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9309 pci_disable_msix(pdev);
9310 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9311 }
9312 }
9313
9314 /**
9315 * ipr_free_all_resources - Free all allocated resources for an adapter.
9316 * @ipr_cmd: ipr command struct
9317 *
9318 * This function frees all allocated resources for the
9319 * specified adapter.
9320 *
9321 * Return value:
9322 * none
9323 **/
9324 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9325 {
9326 struct pci_dev *pdev = ioa_cfg->pdev;
9327
9328 ENTER;
9329 ipr_free_irqs(ioa_cfg);
9330 if (ioa_cfg->reset_work_q)
9331 destroy_workqueue(ioa_cfg->reset_work_q);
9332 iounmap(ioa_cfg->hdw_dma_regs);
9333 pci_release_regions(pdev);
9334 ipr_free_mem(ioa_cfg);
9335 scsi_host_put(ioa_cfg->host);
9336 pci_disable_device(pdev);
9337 LEAVE;
9338 }
9339
9340 /**
9341 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9342 * @ioa_cfg: ioa config struct
9343 *
9344 * Return value:
9345 * 0 on success / -ENOMEM on allocation failure
9346 **/
9347 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9348 {
9349 struct ipr_cmnd *ipr_cmd;
9350 struct ipr_ioarcb *ioarcb;
9351 dma_addr_t dma_addr;
9352 int i, entries_each_hrrq, hrrq_id = 0;
9353
9354 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9355 sizeof(struct ipr_cmnd), 512, 0);
9356
9357 if (!ioa_cfg->ipr_cmd_pool)
9358 return -ENOMEM;
9359
9360 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9361 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9362
9363 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9364 ipr_free_cmd_blks(ioa_cfg);
9365 return -ENOMEM;
9366 }
9367
9368 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9369 if (ioa_cfg->hrrq_num > 1) {
9370 if (i == 0) {
9371 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9372 ioa_cfg->hrrq[i].min_cmd_id = 0;
9373 ioa_cfg->hrrq[i].max_cmd_id =
9374 (entries_each_hrrq - 1);
9375 } else {
9376 entries_each_hrrq =
9377 IPR_NUM_BASE_CMD_BLKS/
9378 (ioa_cfg->hrrq_num - 1);
9379 ioa_cfg->hrrq[i].min_cmd_id =
9380 IPR_NUM_INTERNAL_CMD_BLKS +
9381 (i - 1) * entries_each_hrrq;
9382 ioa_cfg->hrrq[i].max_cmd_id =
9383 (IPR_NUM_INTERNAL_CMD_BLKS +
9384 i * entries_each_hrrq - 1);
9385 }
9386 } else {
9387 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9388 ioa_cfg->hrrq[i].min_cmd_id = 0;
9389 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9390 }
9391 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9392 }
9393
9394 BUG_ON(ioa_cfg->hrrq_num == 0);
9395
9396 i = IPR_NUM_CMD_BLKS -
9397 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9398 if (i > 0) {
9399 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9400 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9401 }
9402
9403 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9404 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9405
9406 if (!ipr_cmd) {
9407 ipr_free_cmd_blks(ioa_cfg);
9408 return -ENOMEM;
9409 }
9410
9411 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9412 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9413 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9414
9415 ioarcb = &ipr_cmd->ioarcb;
9416 ipr_cmd->dma_addr = dma_addr;
9417 if (ioa_cfg->sis64)
9418 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9419 else
9420 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9421
9422 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9423 if (ioa_cfg->sis64) {
9424 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9425 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9426 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9427 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9428 } else {
9429 ioarcb->write_ioadl_addr =
9430 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9431 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9432 ioarcb->ioasa_host_pci_addr =
9433 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9434 }
9435 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9436 ipr_cmd->cmd_index = i;
9437 ipr_cmd->ioa_cfg = ioa_cfg;
9438 ipr_cmd->sense_buffer_dma = dma_addr +
9439 offsetof(struct ipr_cmnd, sense_buffer);
9440
9441 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9442 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9443 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9444 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9445 hrrq_id++;
9446 }
9447
9448 return 0;
9449 }
9450
9451 /**
9452 * ipr_alloc_mem - Allocate memory for an adapter
9453 * @ioa_cfg: ioa config struct
9454 *
9455 * Return value:
9456 * 0 on success / non-zero for error
9457 **/
9458 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9459 {
9460 struct pci_dev *pdev = ioa_cfg->pdev;
9461 int i, rc = -ENOMEM;
9462
9463 ENTER;
9464 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9465 ioa_cfg->max_devs_supported, GFP_KERNEL);
9466
9467 if (!ioa_cfg->res_entries)
9468 goto out;
9469
9470 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9471 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9472 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9473 }
9474
9475 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9476 sizeof(struct ipr_misc_cbs),
9477 &ioa_cfg->vpd_cbs_dma,
9478 GFP_KERNEL);
9479
9480 if (!ioa_cfg->vpd_cbs)
9481 goto out_free_res_entries;
9482
9483 if (ipr_alloc_cmd_blks(ioa_cfg))
9484 goto out_free_vpd_cbs;
9485
9486 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9487 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9488 sizeof(u32) * ioa_cfg->hrrq[i].size,
9489 &ioa_cfg->hrrq[i].host_rrq_dma,
9490 GFP_KERNEL);
9491
9492 if (!ioa_cfg->hrrq[i].host_rrq) {
9493 while (--i > 0)
9494 dma_free_coherent(&pdev->dev,
9495 sizeof(u32) * ioa_cfg->hrrq[i].size,
9496 ioa_cfg->hrrq[i].host_rrq,
9497 ioa_cfg->hrrq[i].host_rrq_dma);
9498 goto out_ipr_free_cmd_blocks;
9499 }
9500 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9501 }
9502
9503 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9504 ioa_cfg->cfg_table_size,
9505 &ioa_cfg->cfg_table_dma,
9506 GFP_KERNEL);
9507
9508 if (!ioa_cfg->u.cfg_table)
9509 goto out_free_host_rrq;
9510
9511 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9512 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9513 sizeof(struct ipr_hostrcb),
9514 &ioa_cfg->hostrcb_dma[i],
9515 GFP_KERNEL);
9516
9517 if (!ioa_cfg->hostrcb[i])
9518 goto out_free_hostrcb_dma;
9519
9520 ioa_cfg->hostrcb[i]->hostrcb_dma =
9521 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9522 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9523 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9524 }
9525
9526 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9527 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9528
9529 if (!ioa_cfg->trace)
9530 goto out_free_hostrcb_dma;
9531
9532 rc = 0;
9533 out:
9534 LEAVE;
9535 return rc;
9536
9537 out_free_hostrcb_dma:
9538 while (i-- > 0) {
9539 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9540 ioa_cfg->hostrcb[i],
9541 ioa_cfg->hostrcb_dma[i]);
9542 }
9543 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9544 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9545 out_free_host_rrq:
9546 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9547 dma_free_coherent(&pdev->dev,
9548 sizeof(u32) * ioa_cfg->hrrq[i].size,
9549 ioa_cfg->hrrq[i].host_rrq,
9550 ioa_cfg->hrrq[i].host_rrq_dma);
9551 }
9552 out_ipr_free_cmd_blocks:
9553 ipr_free_cmd_blks(ioa_cfg);
9554 out_free_vpd_cbs:
9555 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9556 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9557 out_free_res_entries:
9558 kfree(ioa_cfg->res_entries);
9559 goto out;
9560 }
9561
9562 /**
9563 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9564 * @ioa_cfg: ioa config struct
9565 *
9566 * Return value:
9567 * none
9568 **/
9569 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9570 {
9571 int i;
9572
9573 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9574 ioa_cfg->bus_attr[i].bus = i;
9575 ioa_cfg->bus_attr[i].qas_enabled = 0;
9576 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9577 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9578 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9579 else
9580 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9581 }
9582 }
9583
9584 /**
9585 * ipr_init_regs - Initialize IOA registers
9586 * @ioa_cfg: ioa config struct
9587 *
9588 * Return value:
9589 * none
9590 **/
9591 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9592 {
9593 const struct ipr_interrupt_offsets *p;
9594 struct ipr_interrupts *t;
9595 void __iomem *base;
9596
9597 p = &ioa_cfg->chip_cfg->regs;
9598 t = &ioa_cfg->regs;
9599 base = ioa_cfg->hdw_dma_regs;
9600
9601 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9602 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9603 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9604 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9605 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9606 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9607 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9608 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9609 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9610 t->ioarrin_reg = base + p->ioarrin_reg;
9611 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9612 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9613 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9614 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9615 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9616 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9617
9618 if (ioa_cfg->sis64) {
9619 t->init_feedback_reg = base + p->init_feedback_reg;
9620 t->dump_addr_reg = base + p->dump_addr_reg;
9621 t->dump_data_reg = base + p->dump_data_reg;
9622 t->endian_swap_reg = base + p->endian_swap_reg;
9623 }
9624 }
9625
9626 /**
9627 * ipr_init_ioa_cfg - Initialize IOA config struct
9628 * @ioa_cfg: ioa config struct
9629 * @host: scsi host struct
9630 * @pdev: PCI dev struct
9631 *
9632 * Return value:
9633 * none
9634 **/
9635 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9636 struct Scsi_Host *host, struct pci_dev *pdev)
9637 {
9638 int i;
9639
9640 ioa_cfg->host = host;
9641 ioa_cfg->pdev = pdev;
9642 ioa_cfg->log_level = ipr_log_level;
9643 ioa_cfg->doorbell = IPR_DOORBELL;
9644 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9645 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9646 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9647 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9648 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9649 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9650
9651 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9652 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9653 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9654 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9655 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9656 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9657 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9658 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9659 ioa_cfg->sdt_state = INACTIVE;
9660
9661 ipr_initialize_bus_attr(ioa_cfg);
9662 ioa_cfg->max_devs_supported = ipr_max_devs;
9663
9664 if (ioa_cfg->sis64) {
9665 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9666 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9667 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9668 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9669 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9670 + ((sizeof(struct ipr_config_table_entry64)
9671 * ioa_cfg->max_devs_supported)));
9672 } else {
9673 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9674 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9675 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9676 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9677 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9678 + ((sizeof(struct ipr_config_table_entry)
9679 * ioa_cfg->max_devs_supported)));
9680 }
9681
9682 host->max_channel = IPR_VSET_BUS;
9683 host->unique_id = host->host_no;
9684 host->max_cmd_len = IPR_MAX_CDB_LEN;
9685 host->can_queue = ioa_cfg->max_cmds;
9686 pci_set_drvdata(pdev, ioa_cfg);
9687
9688 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9689 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9690 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9691 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9692 if (i == 0)
9693 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9694 else
9695 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9696 }
9697 }
9698
9699 /**
9700 * ipr_get_chip_info - Find adapter chip information
9701 * @dev_id: PCI device id struct
9702 *
9703 * Return value:
9704 * ptr to chip information on success / NULL on failure
9705 **/
9706 static const struct ipr_chip_t *
9707 ipr_get_chip_info(const struct pci_device_id *dev_id)
9708 {
9709 int i;
9710
9711 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9712 if (ipr_chip[i].vendor == dev_id->vendor &&
9713 ipr_chip[i].device == dev_id->device)
9714 return &ipr_chip[i];
9715 return NULL;
9716 }
9717
9718 /**
9719 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9720 * during probe time
9721 * @ioa_cfg: ioa config struct
9722 *
9723 * Return value:
9724 * None
9725 **/
9726 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9727 {
9728 struct pci_dev *pdev = ioa_cfg->pdev;
9729
9730 if (pci_channel_offline(pdev)) {
9731 wait_event_timeout(ioa_cfg->eeh_wait_q,
9732 !pci_channel_offline(pdev),
9733 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9734 pci_restore_state(pdev);
9735 }
9736 }
9737
9738 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9739 {
9740 struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9741 int i, vectors;
9742
9743 for (i = 0; i < ARRAY_SIZE(entries); ++i)
9744 entries[i].entry = i;
9745
9746 vectors = pci_enable_msix_range(ioa_cfg->pdev,
9747 entries, 1, ipr_number_of_msix);
9748 if (vectors < 0) {
9749 ipr_wait_for_pci_err_recovery(ioa_cfg);
9750 return vectors;
9751 }
9752
9753 for (i = 0; i < vectors; i++)
9754 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9755 ioa_cfg->nvectors = vectors;
9756
9757 return 0;
9758 }
9759
9760 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9761 {
9762 int i, vectors;
9763
9764 vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9765 if (vectors < 0) {
9766 ipr_wait_for_pci_err_recovery(ioa_cfg);
9767 return vectors;
9768 }
9769
9770 for (i = 0; i < vectors; i++)
9771 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9772 ioa_cfg->nvectors = vectors;
9773
9774 return 0;
9775 }
9776
9777 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9778 {
9779 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9780
9781 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9782 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9783 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9784 ioa_cfg->vectors_info[vec_idx].
9785 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9786 }
9787 }
9788
9789 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9790 {
9791 int i, rc;
9792
9793 for (i = 1; i < ioa_cfg->nvectors; i++) {
9794 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9795 ipr_isr_mhrrq,
9796 0,
9797 ioa_cfg->vectors_info[i].desc,
9798 &ioa_cfg->hrrq[i]);
9799 if (rc) {
9800 while (--i >= 0)
9801 free_irq(ioa_cfg->vectors_info[i].vec,
9802 &ioa_cfg->hrrq[i]);
9803 return rc;
9804 }
9805 }
9806 return 0;
9807 }
9808
9809 /**
9810 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9811 * @pdev: PCI device struct
9812 *
9813 * Description: Simply set the msi_received flag to 1 indicating that
9814 * Message Signaled Interrupts are supported.
9815 *
9816 * Return value:
9817 * 0 on success / non-zero on failure
9818 **/
9819 static irqreturn_t ipr_test_intr(int irq, void *devp)
9820 {
9821 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9822 unsigned long lock_flags = 0;
9823 irqreturn_t rc = IRQ_HANDLED;
9824
9825 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9826 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9827
9828 ioa_cfg->msi_received = 1;
9829 wake_up(&ioa_cfg->msi_wait_q);
9830
9831 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9832 return rc;
9833 }
9834
9835 /**
9836 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9837 * @pdev: PCI device struct
9838 *
9839 * Description: The return value from pci_enable_msi_range() can not always be
9840 * trusted. This routine sets up and initiates a test interrupt to determine
9841 * if the interrupt is received via the ipr_test_intr() service routine.
9842 * If the tests fails, the driver will fall back to LSI.
9843 *
9844 * Return value:
9845 * 0 on success / non-zero on failure
9846 **/
9847 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9848 {
9849 int rc;
9850 volatile u32 int_reg;
9851 unsigned long lock_flags = 0;
9852
9853 ENTER;
9854
9855 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9856 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9857 ioa_cfg->msi_received = 0;
9858 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9859 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9860 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9861 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9862
9863 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9864 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9865 else
9866 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9867 if (rc) {
9868 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9869 return rc;
9870 } else if (ipr_debug)
9871 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9872
9873 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9874 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9875 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9876 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9877 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9878
9879 if (!ioa_cfg->msi_received) {
9880 /* MSI test failed */
9881 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9882 rc = -EOPNOTSUPP;
9883 } else if (ipr_debug)
9884 dev_info(&pdev->dev, "MSI test succeeded.\n");
9885
9886 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9887
9888 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9889 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9890 else
9891 free_irq(pdev->irq, ioa_cfg);
9892
9893 LEAVE;
9894
9895 return rc;
9896 }
9897
9898 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9899 * @pdev: PCI device struct
9900 * @dev_id: PCI device id struct
9901 *
9902 * Return value:
9903 * 0 on success / non-zero on failure
9904 **/
9905 static int ipr_probe_ioa(struct pci_dev *pdev,
9906 const struct pci_device_id *dev_id)
9907 {
9908 struct ipr_ioa_cfg *ioa_cfg;
9909 struct Scsi_Host *host;
9910 unsigned long ipr_regs_pci;
9911 void __iomem *ipr_regs;
9912 int rc = PCIBIOS_SUCCESSFUL;
9913 volatile u32 mask, uproc, interrupts;
9914 unsigned long lock_flags, driver_lock_flags;
9915
9916 ENTER;
9917
9918 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9919 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9920
9921 if (!host) {
9922 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9923 rc = -ENOMEM;
9924 goto out;
9925 }
9926
9927 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9928 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9929 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9930
9931 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9932
9933 if (!ioa_cfg->ipr_chip) {
9934 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9935 dev_id->vendor, dev_id->device);
9936 goto out_scsi_host_put;
9937 }
9938
9939 /* set SIS 32 or SIS 64 */
9940 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9941 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
9942 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
9943 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
9944
9945 if (ipr_transop_timeout)
9946 ioa_cfg->transop_timeout = ipr_transop_timeout;
9947 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
9948 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
9949 else
9950 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
9951
9952 ioa_cfg->revid = pdev->revision;
9953
9954 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
9955
9956 ipr_regs_pci = pci_resource_start(pdev, 0);
9957
9958 rc = pci_request_regions(pdev, IPR_NAME);
9959 if (rc < 0) {
9960 dev_err(&pdev->dev,
9961 "Couldn't register memory range of registers\n");
9962 goto out_scsi_host_put;
9963 }
9964
9965 rc = pci_enable_device(pdev);
9966
9967 if (rc || pci_channel_offline(pdev)) {
9968 if (pci_channel_offline(pdev)) {
9969 ipr_wait_for_pci_err_recovery(ioa_cfg);
9970 rc = pci_enable_device(pdev);
9971 }
9972
9973 if (rc) {
9974 dev_err(&pdev->dev, "Cannot enable adapter\n");
9975 ipr_wait_for_pci_err_recovery(ioa_cfg);
9976 goto out_release_regions;
9977 }
9978 }
9979
9980 ipr_regs = pci_ioremap_bar(pdev, 0);
9981
9982 if (!ipr_regs) {
9983 dev_err(&pdev->dev,
9984 "Couldn't map memory range of registers\n");
9985 rc = -ENOMEM;
9986 goto out_disable;
9987 }
9988
9989 ioa_cfg->hdw_dma_regs = ipr_regs;
9990 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
9991 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
9992
9993 ipr_init_regs(ioa_cfg);
9994
9995 if (ioa_cfg->sis64) {
9996 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
9997 if (rc < 0) {
9998 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
9999 rc = dma_set_mask_and_coherent(&pdev->dev,
10000 DMA_BIT_MASK(32));
10001 }
10002 } else
10003 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10004
10005 if (rc < 0) {
10006 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10007 goto cleanup_nomem;
10008 }
10009
10010 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10011 ioa_cfg->chip_cfg->cache_line_size);
10012
10013 if (rc != PCIBIOS_SUCCESSFUL) {
10014 dev_err(&pdev->dev, "Write of cache line size failed\n");
10015 ipr_wait_for_pci_err_recovery(ioa_cfg);
10016 rc = -EIO;
10017 goto cleanup_nomem;
10018 }
10019
10020 /* Issue MMIO read to ensure card is not in EEH */
10021 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10022 ipr_wait_for_pci_err_recovery(ioa_cfg);
10023
10024 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10025 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10026 IPR_MAX_MSIX_VECTORS);
10027 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10028 }
10029
10030 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10031 ipr_enable_msix(ioa_cfg) == 0)
10032 ioa_cfg->intr_flag = IPR_USE_MSIX;
10033 else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10034 ipr_enable_msi(ioa_cfg) == 0)
10035 ioa_cfg->intr_flag = IPR_USE_MSI;
10036 else {
10037 ioa_cfg->intr_flag = IPR_USE_LSI;
10038 ioa_cfg->nvectors = 1;
10039 dev_info(&pdev->dev, "Cannot enable MSI.\n");
10040 }
10041
10042 pci_set_master(pdev);
10043
10044 if (pci_channel_offline(pdev)) {
10045 ipr_wait_for_pci_err_recovery(ioa_cfg);
10046 pci_set_master(pdev);
10047 if (pci_channel_offline(pdev)) {
10048 rc = -EIO;
10049 goto out_msi_disable;
10050 }
10051 }
10052
10053 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
10054 ioa_cfg->intr_flag == IPR_USE_MSIX) {
10055 rc = ipr_test_msi(ioa_cfg, pdev);
10056 if (rc == -EOPNOTSUPP) {
10057 ipr_wait_for_pci_err_recovery(ioa_cfg);
10058 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
10059 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
10060 pci_disable_msi(pdev);
10061 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
10062 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
10063 pci_disable_msix(pdev);
10064 }
10065
10066 ioa_cfg->intr_flag = IPR_USE_LSI;
10067 ioa_cfg->nvectors = 1;
10068 }
10069 else if (rc)
10070 goto out_msi_disable;
10071 else {
10072 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10073 dev_info(&pdev->dev,
10074 "Request for %d MSIs succeeded with starting IRQ: %d\n",
10075 ioa_cfg->nvectors, pdev->irq);
10076 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10077 dev_info(&pdev->dev,
10078 "Request for %d MSIXs succeeded.",
10079 ioa_cfg->nvectors);
10080 }
10081 }
10082
10083 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10084 (unsigned int)num_online_cpus(),
10085 (unsigned int)IPR_MAX_HRRQ_NUM);
10086
10087 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10088 goto out_msi_disable;
10089
10090 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10091 goto out_msi_disable;
10092
10093 rc = ipr_alloc_mem(ioa_cfg);
10094 if (rc < 0) {
10095 dev_err(&pdev->dev,
10096 "Couldn't allocate enough memory for device driver!\n");
10097 goto out_msi_disable;
10098 }
10099
10100 /* Save away PCI config space for use following IOA reset */
10101 rc = pci_save_state(pdev);
10102
10103 if (rc != PCIBIOS_SUCCESSFUL) {
10104 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10105 rc = -EIO;
10106 goto cleanup_nolog;
10107 }
10108
10109 /*
10110 * If HRRQ updated interrupt is not masked, or reset alert is set,
10111 * the card is in an unknown state and needs a hard reset
10112 */
10113 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10114 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10115 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10116 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10117 ioa_cfg->needs_hard_reset = 1;
10118 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10119 ioa_cfg->needs_hard_reset = 1;
10120 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10121 ioa_cfg->ioa_unit_checked = 1;
10122
10123 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10124 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10125 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10126
10127 if (ioa_cfg->intr_flag == IPR_USE_MSI
10128 || ioa_cfg->intr_flag == IPR_USE_MSIX) {
10129 name_msi_vectors(ioa_cfg);
10130 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
10131 0,
10132 ioa_cfg->vectors_info[0].desc,
10133 &ioa_cfg->hrrq[0]);
10134 if (!rc)
10135 rc = ipr_request_other_msi_irqs(ioa_cfg);
10136 } else {
10137 rc = request_irq(pdev->irq, ipr_isr,
10138 IRQF_SHARED,
10139 IPR_NAME, &ioa_cfg->hrrq[0]);
10140 }
10141 if (rc) {
10142 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10143 pdev->irq, rc);
10144 goto cleanup_nolog;
10145 }
10146
10147 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10148 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10149 ioa_cfg->needs_warm_reset = 1;
10150 ioa_cfg->reset = ipr_reset_slot_reset;
10151
10152 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10153 WQ_MEM_RECLAIM, host->host_no);
10154
10155 if (!ioa_cfg->reset_work_q) {
10156 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10157 goto out_free_irq;
10158 }
10159 } else
10160 ioa_cfg->reset = ipr_reset_start_bist;
10161
10162 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10163 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10164 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10165
10166 LEAVE;
10167 out:
10168 return rc;
10169
10170 out_free_irq:
10171 ipr_free_irqs(ioa_cfg);
10172 cleanup_nolog:
10173 ipr_free_mem(ioa_cfg);
10174 out_msi_disable:
10175 ipr_wait_for_pci_err_recovery(ioa_cfg);
10176 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10177 pci_disable_msi(pdev);
10178 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10179 pci_disable_msix(pdev);
10180 cleanup_nomem:
10181 iounmap(ipr_regs);
10182 out_disable:
10183 pci_disable_device(pdev);
10184 out_release_regions:
10185 pci_release_regions(pdev);
10186 out_scsi_host_put:
10187 scsi_host_put(host);
10188 goto out;
10189 }
10190
10191 /**
10192 * ipr_initiate_ioa_bringdown - Bring down an adapter
10193 * @ioa_cfg: ioa config struct
10194 * @shutdown_type: shutdown type
10195 *
10196 * Description: This function will initiate bringing down the adapter.
10197 * This consists of issuing an IOA shutdown to the adapter
10198 * to flush the cache, and running BIST.
10199 * If the caller needs to wait on the completion of the reset,
10200 * the caller must sleep on the reset_wait_q.
10201 *
10202 * Return value:
10203 * none
10204 **/
10205 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10206 enum ipr_shutdown_type shutdown_type)
10207 {
10208 ENTER;
10209 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10210 ioa_cfg->sdt_state = ABORT_DUMP;
10211 ioa_cfg->reset_retries = 0;
10212 ioa_cfg->in_ioa_bringdown = 1;
10213 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10214 LEAVE;
10215 }
10216
10217 /**
10218 * __ipr_remove - Remove a single adapter
10219 * @pdev: pci device struct
10220 *
10221 * Adapter hot plug remove entry point.
10222 *
10223 * Return value:
10224 * none
10225 **/
10226 static void __ipr_remove(struct pci_dev *pdev)
10227 {
10228 unsigned long host_lock_flags = 0;
10229 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10230 int i;
10231 unsigned long driver_lock_flags;
10232 ENTER;
10233
10234 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10235 while (ioa_cfg->in_reset_reload) {
10236 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10237 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10238 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10239 }
10240
10241 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10242 spin_lock(&ioa_cfg->hrrq[i]._lock);
10243 ioa_cfg->hrrq[i].removing_ioa = 1;
10244 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10245 }
10246 wmb();
10247 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10248
10249 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10250 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10251 flush_work(&ioa_cfg->work_q);
10252 if (ioa_cfg->reset_work_q)
10253 flush_workqueue(ioa_cfg->reset_work_q);
10254 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10255 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10256
10257 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10258 list_del(&ioa_cfg->queue);
10259 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10260
10261 if (ioa_cfg->sdt_state == ABORT_DUMP)
10262 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10263 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10264
10265 ipr_free_all_resources(ioa_cfg);
10266
10267 LEAVE;
10268 }
10269
10270 /**
10271 * ipr_remove - IOA hot plug remove entry point
10272 * @pdev: pci device struct
10273 *
10274 * Adapter hot plug remove entry point.
10275 *
10276 * Return value:
10277 * none
10278 **/
10279 static void ipr_remove(struct pci_dev *pdev)
10280 {
10281 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10282
10283 ENTER;
10284
10285 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10286 &ipr_trace_attr);
10287 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10288 &ipr_dump_attr);
10289 scsi_remove_host(ioa_cfg->host);
10290
10291 __ipr_remove(pdev);
10292
10293 LEAVE;
10294 }
10295
10296 /**
10297 * ipr_probe - Adapter hot plug add entry point
10298 *
10299 * Return value:
10300 * 0 on success / non-zero on failure
10301 **/
10302 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10303 {
10304 struct ipr_ioa_cfg *ioa_cfg;
10305 int rc, i;
10306
10307 rc = ipr_probe_ioa(pdev, dev_id);
10308
10309 if (rc)
10310 return rc;
10311
10312 ioa_cfg = pci_get_drvdata(pdev);
10313 rc = ipr_probe_ioa_part2(ioa_cfg);
10314
10315 if (rc) {
10316 __ipr_remove(pdev);
10317 return rc;
10318 }
10319
10320 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10321
10322 if (rc) {
10323 __ipr_remove(pdev);
10324 return rc;
10325 }
10326
10327 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10328 &ipr_trace_attr);
10329
10330 if (rc) {
10331 scsi_remove_host(ioa_cfg->host);
10332 __ipr_remove(pdev);
10333 return rc;
10334 }
10335
10336 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10337 &ipr_dump_attr);
10338
10339 if (rc) {
10340 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10341 &ipr_trace_attr);
10342 scsi_remove_host(ioa_cfg->host);
10343 __ipr_remove(pdev);
10344 return rc;
10345 }
10346
10347 scsi_scan_host(ioa_cfg->host);
10348 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10349
10350 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10351 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10352 blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
10353 ioa_cfg->iopoll_weight, ipr_iopoll);
10354 blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
10355 }
10356 }
10357
10358 schedule_work(&ioa_cfg->work_q);
10359 return 0;
10360 }
10361
10362 /**
10363 * ipr_shutdown - Shutdown handler.
10364 * @pdev: pci device struct
10365 *
10366 * This function is invoked upon system shutdown/reboot. It will issue
10367 * an adapter shutdown to the adapter to flush the write cache.
10368 *
10369 * Return value:
10370 * none
10371 **/
10372 static void ipr_shutdown(struct pci_dev *pdev)
10373 {
10374 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10375 unsigned long lock_flags = 0;
10376 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10377 int i;
10378
10379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10380 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10381 ioa_cfg->iopoll_weight = 0;
10382 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10383 blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
10384 }
10385
10386 while (ioa_cfg->in_reset_reload) {
10387 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10388 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10389 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10390 }
10391
10392 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10393 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10394
10395 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10396 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10397 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10398 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10399 ipr_free_irqs(ioa_cfg);
10400 pci_disable_device(ioa_cfg->pdev);
10401 }
10402 }
10403
10404 static struct pci_device_id ipr_pci_table[] = {
10405 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10406 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10407 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10408 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10409 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10410 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10411 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10412 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10413 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10414 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10415 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10416 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10417 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10418 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10419 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10420 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10421 IPR_USE_LONG_TRANSOP_TIMEOUT },
10422 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10423 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10424 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10425 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10426 IPR_USE_LONG_TRANSOP_TIMEOUT },
10427 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10428 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10429 IPR_USE_LONG_TRANSOP_TIMEOUT },
10430 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10431 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10432 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10433 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10434 IPR_USE_LONG_TRANSOP_TIMEOUT},
10435 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10436 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10437 IPR_USE_LONG_TRANSOP_TIMEOUT },
10438 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10439 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10440 IPR_USE_LONG_TRANSOP_TIMEOUT },
10441 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10442 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10443 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10444 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10445 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10446 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10447 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10448 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10449 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10450 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10451 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10452 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10453 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10454 IPR_USE_LONG_TRANSOP_TIMEOUT },
10455 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10456 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10457 IPR_USE_LONG_TRANSOP_TIMEOUT },
10458 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10459 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10460 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10461 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10462 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10463 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10464 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10465 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10466 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10467 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10468 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10469 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10470 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10471 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10472 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10473 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10474 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10475 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10476 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10477 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10478 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10479 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10480 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10481 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10482 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10483 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10484 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10485 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10486 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10487 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10488 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10489 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10490 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10491 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10492 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10493 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10494 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10495 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10496 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10497 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10498 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10499 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10500 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10501 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10502 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10503 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10504 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10505 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10506 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10507 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10508 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10509 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10510 { }
10511 };
10512 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10513
10514 static const struct pci_error_handlers ipr_err_handler = {
10515 .error_detected = ipr_pci_error_detected,
10516 .mmio_enabled = ipr_pci_mmio_enabled,
10517 .slot_reset = ipr_pci_slot_reset,
10518 };
10519
10520 static struct pci_driver ipr_driver = {
10521 .name = IPR_NAME,
10522 .id_table = ipr_pci_table,
10523 .probe = ipr_probe,
10524 .remove = ipr_remove,
10525 .shutdown = ipr_shutdown,
10526 .err_handler = &ipr_err_handler,
10527 };
10528
10529 /**
10530 * ipr_halt_done - Shutdown prepare completion
10531 *
10532 * Return value:
10533 * none
10534 **/
10535 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10536 {
10537 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10538 }
10539
10540 /**
10541 * ipr_halt - Issue shutdown prepare to all adapters
10542 *
10543 * Return value:
10544 * NOTIFY_OK on success / NOTIFY_DONE on failure
10545 **/
10546 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10547 {
10548 struct ipr_cmnd *ipr_cmd;
10549 struct ipr_ioa_cfg *ioa_cfg;
10550 unsigned long flags = 0, driver_lock_flags;
10551
10552 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10553 return NOTIFY_DONE;
10554
10555 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10556
10557 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10558 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10559 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10560 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10561 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10562 continue;
10563 }
10564
10565 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10566 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10567 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10568 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10569 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10570
10571 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10572 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10573 }
10574 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10575
10576 return NOTIFY_OK;
10577 }
10578
10579 static struct notifier_block ipr_notifier = {
10580 ipr_halt, NULL, 0
10581 };
10582
10583 /**
10584 * ipr_init - Module entry point
10585 *
10586 * Return value:
10587 * 0 on success / negative value on failure
10588 **/
10589 static int __init ipr_init(void)
10590 {
10591 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10592 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10593
10594 register_reboot_notifier(&ipr_notifier);
10595 return pci_register_driver(&ipr_driver);
10596 }
10597
10598 /**
10599 * ipr_exit - Module unload
10600 *
10601 * Module unload entry point.
10602 *
10603 * Return value:
10604 * none
10605 **/
10606 static void __exit ipr_exit(void)
10607 {
10608 unregister_reboot_notifier(&ipr_notifier);
10609 pci_unregister_driver(&ipr_driver);
10610 }
10611
10612 module_init(ipr_init);
10613 module_exit(ipr_exit);
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