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 **/
ipr_trc_hook(struct ipr_cmnd * ipr_cmd,u8 type,u32 add_data)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 **/
ipr_lock_and_done(struct ipr_cmnd * ipr_cmd)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 **/
ipr_reinit_ipr_cmnd(struct ipr_cmnd * ipr_cmd)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 **/
ipr_init_ipr_cmnd(struct ipr_cmnd * ipr_cmd,void (* fast_done)(struct ipr_cmnd *))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
__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue * hrrq)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
ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg * ioa_cfg)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 **/
ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg * ioa_cfg,u32 clr_ints)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 **/
ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg * ioa_cfg)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 **/
ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg * ioa_cfg)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 **/
ipr_sata_eh_done(struct ipr_cmnd * ipr_cmd)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 **/
ipr_scsi_eh_done(struct ipr_cmnd * ipr_cmd)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 **/
ipr_fail_all_ops(struct ipr_ioa_cfg * ioa_cfg)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 **/
ipr_send_command(struct ipr_cmnd * ipr_cmd)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 **/
ipr_do_req(struct ipr_cmnd * ipr_cmd,void (* done)(struct ipr_cmnd *),void (* timeout_func)(struct ipr_cmnd *),u32 timeout)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 **/
ipr_internal_cmd_done(struct ipr_cmnd * ipr_cmd)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 **/
ipr_init_ioadl(struct ipr_cmnd * ipr_cmd,dma_addr_t dma_addr,u32 len,int flags)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 **/
ipr_send_blocking_cmd(struct ipr_cmnd * ipr_cmd,void (* timeout_func)(struct ipr_cmnd * ipr_cmd),u32 timeout)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
ipr_get_hrrq_index(struct ipr_ioa_cfg * ioa_cfg)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 **/
ipr_send_hcam(struct ipr_ioa_cfg * ioa_cfg,u8 type,struct ipr_hostrcb * hostrcb)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 **/
ipr_update_ata_class(struct ipr_resource_entry * res,unsigned int proto)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 **/
ipr_init_res_entry(struct ipr_resource_entry * res,struct ipr_config_table_entry_wrapper * cfgtew)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 **/
ipr_is_same_device(struct ipr_resource_entry * res,struct ipr_config_table_entry_wrapper * cfgtew)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 **/
__ipr_format_res_path(u8 * res_path,char * buffer,int len)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 **/
ipr_format_res_path(struct ipr_ioa_cfg * ioa_cfg,u8 * res_path,char * buffer,int len)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 **/
ipr_update_res_entry(struct ipr_resource_entry * res,struct ipr_config_table_entry_wrapper * cfgtew)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 **/
ipr_clear_res_target(struct ipr_resource_entry * res)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 **/
ipr_handle_config_change(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_process_ccn(struct ipr_cmnd * ipr_cmd)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 **/
strip_and_pad_whitespace(int i,char * buf)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 **/
ipr_log_vpd_compact(char * prefix,struct ipr_hostrcb * hostrcb,struct ipr_vpd * vpd)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 **/
ipr_log_vpd(struct ipr_vpd * vpd)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 **/
ipr_log_ext_vpd_compact(char * prefix,struct ipr_hostrcb * hostrcb,struct ipr_ext_vpd * vpd)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 **/
ipr_log_ext_vpd(struct ipr_ext_vpd * vpd)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 **/
ipr_log_enhanced_cache_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_cache_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_enhanced_config_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_sis64_config_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_config_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_enhanced_array_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_array_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_hex_data(struct ipr_ioa_cfg * ioa_cfg,__be32 * data,int len)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 **/
ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_dual_ioa_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_fabric_path(struct ipr_hostrcb * hostrcb,struct ipr_hostrcb_fabric_desc * fabric)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 **/
ipr_log64_fabric_path(struct ipr_hostrcb * hostrcb,struct ipr_hostrcb64_fabric_desc * fabric)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 **/
ipr_log_path_elem(struct ipr_hostrcb * hostrcb,struct ipr_hostrcb_config_element * cfg)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 **/
ipr_log64_path_elem(struct ipr_hostrcb * hostrcb,struct ipr_hostrcb64_config_element * cfg)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 **/
ipr_log_fabric_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_sis64_array_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_sis64_fabric_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_generic_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_log_sis64_device_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_get_error(u32 ioasc)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 **/
ipr_handle_log_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)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 **/
ipr_process_error(struct ipr_cmnd * ipr_cmd)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 **/
ipr_timeout(struct ipr_cmnd * ipr_cmd)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 **/
ipr_oper_timeout(struct ipr_cmnd * ipr_cmd)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 *
ipr_find_ses_entry(struct ipr_resource_entry * res)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 **/
ipr_get_max_scsi_speed(struct ipr_ioa_cfg * ioa_cfg,u8 bus,u8 bus_width)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 **/
ipr_wait_iodbg_ack(struct ipr_ioa_cfg * ioa_cfg,int max_delay)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 **/
ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg * ioa_cfg,u32 start_addr,__be32 * dest,u32 length_in_words)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 **/
ipr_get_ldump_data_section(struct ipr_ioa_cfg * ioa_cfg,u32 start_addr,__be32 * dest,u32 length_in_words)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 **/
ipr_sdt_copy(struct ipr_ioa_cfg * ioa_cfg,unsigned long pci_address,u32 length)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 **/
ipr_init_dump_entry_hdr(struct ipr_dump_entry_header * hdr)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 **/
ipr_dump_ioa_type_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_driver_dump * driver_dump)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 **/
ipr_dump_version_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_driver_dump * driver_dump)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 **/
ipr_dump_trace_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_driver_dump * driver_dump)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 **/
ipr_dump_location_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_driver_dump * driver_dump)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 **/
ipr_get_ioa_dump(struct ipr_ioa_cfg * ioa_cfg,struct ipr_dump * dump)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 **/
ipr_release_dump(struct kref * kref)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 **/
ipr_worker_thread(struct work_struct * work)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 **/
ipr_read_trace(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)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 **/
ipr_show_fw_version(struct device * dev,struct device_attribute * attr,char * buf)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 **/
ipr_show_log_level(struct device * dev,struct device_attribute * attr,char * buf)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 **/
ipr_store_log_level(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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 **/
ipr_store_diagnostics(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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 **/
ipr_show_adapter_state(struct device * dev,struct device_attribute * attr,char * buf)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 **/
ipr_store_adapter_state(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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 **/
ipr_store_reset_adapter(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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 **/
ipr_show_iopoll_weight(struct device * dev,struct device_attribute * attr,char * buf)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 **/
ipr_store_iopoll_weight(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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 **/
ipr_alloc_ucode_buffer(int buf_len)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 **/
ipr_free_ucode_buffer(struct ipr_sglist * sglist)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 **/
ipr_copy_ucode_buffer(struct ipr_sglist * sglist,u8 * buffer,u32 len)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 **/
ipr_build_ucode_ioadl64(struct ipr_cmnd * ipr_cmd,struct ipr_sglist * sglist)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 **/
ipr_build_ucode_ioadl(struct ipr_cmnd * ipr_cmd,struct ipr_sglist * sglist)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 **/
ipr_update_ioa_ucode(struct ipr_ioa_cfg * ioa_cfg,struct ipr_sglist * sglist)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 **/
ipr_store_update_fw(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)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 char *endline;
4007 int result, dnld_size;
4008
4009 if (!capable(CAP_SYS_ADMIN))
4010 return -EACCES;
4011
4012 snprintf(fname, sizeof(fname), "%s", buf);
4013
4014 endline = strchr(fname, '\n');
4015 if (endline)
4016 *endline = '\0';
4017
4018 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4019 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4020 return -EIO;
4021 }
4022
4023 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4024
4025 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4026 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4027 sglist = ipr_alloc_ucode_buffer(dnld_size);
4028
4029 if (!sglist) {
4030 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4031 release_firmware(fw_entry);
4032 return -ENOMEM;
4033 }
4034
4035 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4036
4037 if (result) {
4038 dev_err(&ioa_cfg->pdev->dev,
4039 "Microcode buffer copy to DMA buffer failed\n");
4040 goto out;
4041 }
4042
4043 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4044
4045 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4046
4047 if (!result)
4048 result = count;
4049 out:
4050 ipr_free_ucode_buffer(sglist);
4051 release_firmware(fw_entry);
4052 return result;
4053 }
4054
4055 static struct device_attribute ipr_update_fw_attr = {
4056 .attr = {
4057 .name = "update_fw",
4058 .mode = S_IWUSR,
4059 },
4060 .store = ipr_store_update_fw
4061 };
4062
4063 /**
4064 * ipr_show_fw_type - Show the adapter's firmware type.
4065 * @dev: class device struct
4066 * @buf: buffer
4067 *
4068 * Return value:
4069 * number of bytes printed to buffer
4070 **/
ipr_show_fw_type(struct device * dev,struct device_attribute * attr,char * buf)4071 static ssize_t ipr_show_fw_type(struct device *dev,
4072 struct device_attribute *attr, char *buf)
4073 {
4074 struct Scsi_Host *shost = class_to_shost(dev);
4075 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4076 unsigned long lock_flags = 0;
4077 int len;
4078
4079 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4080 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4081 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4082 return len;
4083 }
4084
4085 static struct device_attribute ipr_ioa_fw_type_attr = {
4086 .attr = {
4087 .name = "fw_type",
4088 .mode = S_IRUGO,
4089 },
4090 .show = ipr_show_fw_type
4091 };
4092
4093 static struct device_attribute *ipr_ioa_attrs[] = {
4094 &ipr_fw_version_attr,
4095 &ipr_log_level_attr,
4096 &ipr_diagnostics_attr,
4097 &ipr_ioa_state_attr,
4098 &ipr_ioa_reset_attr,
4099 &ipr_update_fw_attr,
4100 &ipr_ioa_fw_type_attr,
4101 &ipr_iopoll_weight_attr,
4102 NULL,
4103 };
4104
4105 #ifdef CONFIG_SCSI_IPR_DUMP
4106 /**
4107 * ipr_read_dump - Dump the adapter
4108 * @filp: open sysfs file
4109 * @kobj: kobject struct
4110 * @bin_attr: bin_attribute struct
4111 * @buf: buffer
4112 * @off: offset
4113 * @count: buffer size
4114 *
4115 * Return value:
4116 * number of bytes printed to buffer
4117 **/
ipr_read_dump(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)4118 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4119 struct bin_attribute *bin_attr,
4120 char *buf, loff_t off, size_t count)
4121 {
4122 struct device *cdev = container_of(kobj, struct device, kobj);
4123 struct Scsi_Host *shost = class_to_shost(cdev);
4124 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4125 struct ipr_dump *dump;
4126 unsigned long lock_flags = 0;
4127 char *src;
4128 int len, sdt_end;
4129 size_t rc = count;
4130
4131 if (!capable(CAP_SYS_ADMIN))
4132 return -EACCES;
4133
4134 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4135 dump = ioa_cfg->dump;
4136
4137 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4138 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4139 return 0;
4140 }
4141 kref_get(&dump->kref);
4142 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4143
4144 if (off > dump->driver_dump.hdr.len) {
4145 kref_put(&dump->kref, ipr_release_dump);
4146 return 0;
4147 }
4148
4149 if (off + count > dump->driver_dump.hdr.len) {
4150 count = dump->driver_dump.hdr.len - off;
4151 rc = count;
4152 }
4153
4154 if (count && off < sizeof(dump->driver_dump)) {
4155 if (off + count > sizeof(dump->driver_dump))
4156 len = sizeof(dump->driver_dump) - off;
4157 else
4158 len = count;
4159 src = (u8 *)&dump->driver_dump + off;
4160 memcpy(buf, src, len);
4161 buf += len;
4162 off += len;
4163 count -= len;
4164 }
4165
4166 off -= sizeof(dump->driver_dump);
4167
4168 if (ioa_cfg->sis64)
4169 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4170 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4171 sizeof(struct ipr_sdt_entry));
4172 else
4173 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4174 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4175
4176 if (count && off < sdt_end) {
4177 if (off + count > sdt_end)
4178 len = sdt_end - off;
4179 else
4180 len = count;
4181 src = (u8 *)&dump->ioa_dump + off;
4182 memcpy(buf, src, len);
4183 buf += len;
4184 off += len;
4185 count -= len;
4186 }
4187
4188 off -= sdt_end;
4189
4190 while (count) {
4191 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4192 len = PAGE_ALIGN(off) - off;
4193 else
4194 len = count;
4195 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4196 src += off & ~PAGE_MASK;
4197 memcpy(buf, src, len);
4198 buf += len;
4199 off += len;
4200 count -= len;
4201 }
4202
4203 kref_put(&dump->kref, ipr_release_dump);
4204 return rc;
4205 }
4206
4207 /**
4208 * ipr_alloc_dump - Prepare for adapter dump
4209 * @ioa_cfg: ioa config struct
4210 *
4211 * Return value:
4212 * 0 on success / other on failure
4213 **/
ipr_alloc_dump(struct ipr_ioa_cfg * ioa_cfg)4214 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4215 {
4216 struct ipr_dump *dump;
4217 __be32 **ioa_data;
4218 unsigned long lock_flags = 0;
4219
4220 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4221
4222 if (!dump) {
4223 ipr_err("Dump memory allocation failed\n");
4224 return -ENOMEM;
4225 }
4226
4227 if (ioa_cfg->sis64)
4228 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4229 else
4230 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4231
4232 if (!ioa_data) {
4233 ipr_err("Dump memory allocation failed\n");
4234 kfree(dump);
4235 return -ENOMEM;
4236 }
4237
4238 dump->ioa_dump.ioa_data = ioa_data;
4239
4240 kref_init(&dump->kref);
4241 dump->ioa_cfg = ioa_cfg;
4242
4243 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4244
4245 if (INACTIVE != ioa_cfg->sdt_state) {
4246 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4247 vfree(dump->ioa_dump.ioa_data);
4248 kfree(dump);
4249 return 0;
4250 }
4251
4252 ioa_cfg->dump = dump;
4253 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4254 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4255 ioa_cfg->dump_taken = 1;
4256 schedule_work(&ioa_cfg->work_q);
4257 }
4258 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4259
4260 return 0;
4261 }
4262
4263 /**
4264 * ipr_free_dump - Free adapter dump memory
4265 * @ioa_cfg: ioa config struct
4266 *
4267 * Return value:
4268 * 0 on success / other on failure
4269 **/
ipr_free_dump(struct ipr_ioa_cfg * ioa_cfg)4270 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4271 {
4272 struct ipr_dump *dump;
4273 unsigned long lock_flags = 0;
4274
4275 ENTER;
4276
4277 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4278 dump = ioa_cfg->dump;
4279 if (!dump) {
4280 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4281 return 0;
4282 }
4283
4284 ioa_cfg->dump = NULL;
4285 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4286
4287 kref_put(&dump->kref, ipr_release_dump);
4288
4289 LEAVE;
4290 return 0;
4291 }
4292
4293 /**
4294 * ipr_write_dump - Setup dump state of adapter
4295 * @filp: open sysfs file
4296 * @kobj: kobject struct
4297 * @bin_attr: bin_attribute struct
4298 * @buf: buffer
4299 * @off: offset
4300 * @count: buffer size
4301 *
4302 * Return value:
4303 * number of bytes printed to buffer
4304 **/
ipr_write_dump(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)4305 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4306 struct bin_attribute *bin_attr,
4307 char *buf, loff_t off, size_t count)
4308 {
4309 struct device *cdev = container_of(kobj, struct device, kobj);
4310 struct Scsi_Host *shost = class_to_shost(cdev);
4311 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4312 int rc;
4313
4314 if (!capable(CAP_SYS_ADMIN))
4315 return -EACCES;
4316
4317 if (buf[0] == '1')
4318 rc = ipr_alloc_dump(ioa_cfg);
4319 else if (buf[0] == '0')
4320 rc = ipr_free_dump(ioa_cfg);
4321 else
4322 return -EINVAL;
4323
4324 if (rc)
4325 return rc;
4326 else
4327 return count;
4328 }
4329
4330 static struct bin_attribute ipr_dump_attr = {
4331 .attr = {
4332 .name = "dump",
4333 .mode = S_IRUSR | S_IWUSR,
4334 },
4335 .size = 0,
4336 .read = ipr_read_dump,
4337 .write = ipr_write_dump
4338 };
4339 #else
ipr_free_dump(struct ipr_ioa_cfg * ioa_cfg)4340 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4341 #endif
4342
4343 /**
4344 * ipr_change_queue_depth - Change the device's queue depth
4345 * @sdev: scsi device struct
4346 * @qdepth: depth to set
4347 * @reason: calling context
4348 *
4349 * Return value:
4350 * actual depth set
4351 **/
ipr_change_queue_depth(struct scsi_device * sdev,int qdepth)4352 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4353 {
4354 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4355 struct ipr_resource_entry *res;
4356 unsigned long lock_flags = 0;
4357
4358 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4359 res = (struct ipr_resource_entry *)sdev->hostdata;
4360
4361 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4362 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4363 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4364
4365 scsi_change_queue_depth(sdev, qdepth);
4366 return sdev->queue_depth;
4367 }
4368
4369 /**
4370 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4371 * @dev: device struct
4372 * @attr: device attribute structure
4373 * @buf: buffer
4374 *
4375 * Return value:
4376 * number of bytes printed to buffer
4377 **/
ipr_show_adapter_handle(struct device * dev,struct device_attribute * attr,char * buf)4378 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4379 {
4380 struct scsi_device *sdev = to_scsi_device(dev);
4381 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4382 struct ipr_resource_entry *res;
4383 unsigned long lock_flags = 0;
4384 ssize_t len = -ENXIO;
4385
4386 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4387 res = (struct ipr_resource_entry *)sdev->hostdata;
4388 if (res)
4389 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4390 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4391 return len;
4392 }
4393
4394 static struct device_attribute ipr_adapter_handle_attr = {
4395 .attr = {
4396 .name = "adapter_handle",
4397 .mode = S_IRUSR,
4398 },
4399 .show = ipr_show_adapter_handle
4400 };
4401
4402 /**
4403 * ipr_show_resource_path - Show the resource path or the resource address for
4404 * this device.
4405 * @dev: device struct
4406 * @attr: device attribute structure
4407 * @buf: buffer
4408 *
4409 * Return value:
4410 * number of bytes printed to buffer
4411 **/
ipr_show_resource_path(struct device * dev,struct device_attribute * attr,char * buf)4412 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4413 {
4414 struct scsi_device *sdev = to_scsi_device(dev);
4415 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4416 struct ipr_resource_entry *res;
4417 unsigned long lock_flags = 0;
4418 ssize_t len = -ENXIO;
4419 char buffer[IPR_MAX_RES_PATH_LENGTH];
4420
4421 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4422 res = (struct ipr_resource_entry *)sdev->hostdata;
4423 if (res && ioa_cfg->sis64)
4424 len = snprintf(buf, PAGE_SIZE, "%s\n",
4425 __ipr_format_res_path(res->res_path, buffer,
4426 sizeof(buffer)));
4427 else if (res)
4428 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4429 res->bus, res->target, res->lun);
4430
4431 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4432 return len;
4433 }
4434
4435 static struct device_attribute ipr_resource_path_attr = {
4436 .attr = {
4437 .name = "resource_path",
4438 .mode = S_IRUGO,
4439 },
4440 .show = ipr_show_resource_path
4441 };
4442
4443 /**
4444 * ipr_show_device_id - Show the device_id for this device.
4445 * @dev: device struct
4446 * @attr: device attribute structure
4447 * @buf: buffer
4448 *
4449 * Return value:
4450 * number of bytes printed to buffer
4451 **/
ipr_show_device_id(struct device * dev,struct device_attribute * attr,char * buf)4452 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4453 {
4454 struct scsi_device *sdev = to_scsi_device(dev);
4455 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4456 struct ipr_resource_entry *res;
4457 unsigned long lock_flags = 0;
4458 ssize_t len = -ENXIO;
4459
4460 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4461 res = (struct ipr_resource_entry *)sdev->hostdata;
4462 if (res && ioa_cfg->sis64)
4463 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4464 else if (res)
4465 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4466
4467 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4468 return len;
4469 }
4470
4471 static struct device_attribute ipr_device_id_attr = {
4472 .attr = {
4473 .name = "device_id",
4474 .mode = S_IRUGO,
4475 },
4476 .show = ipr_show_device_id
4477 };
4478
4479 /**
4480 * ipr_show_resource_type - Show the resource type for this device.
4481 * @dev: device struct
4482 * @attr: device attribute structure
4483 * @buf: buffer
4484 *
4485 * Return value:
4486 * number of bytes printed to buffer
4487 **/
ipr_show_resource_type(struct device * dev,struct device_attribute * attr,char * buf)4488 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4489 {
4490 struct scsi_device *sdev = to_scsi_device(dev);
4491 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4492 struct ipr_resource_entry *res;
4493 unsigned long lock_flags = 0;
4494 ssize_t len = -ENXIO;
4495
4496 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4497 res = (struct ipr_resource_entry *)sdev->hostdata;
4498
4499 if (res)
4500 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4501
4502 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4503 return len;
4504 }
4505
4506 static struct device_attribute ipr_resource_type_attr = {
4507 .attr = {
4508 .name = "resource_type",
4509 .mode = S_IRUGO,
4510 },
4511 .show = ipr_show_resource_type
4512 };
4513
4514 /**
4515 * ipr_show_raw_mode - Show the adapter's raw mode
4516 * @dev: class device struct
4517 * @buf: buffer
4518 *
4519 * Return value:
4520 * number of bytes printed to buffer
4521 **/
ipr_show_raw_mode(struct device * dev,struct device_attribute * attr,char * buf)4522 static ssize_t ipr_show_raw_mode(struct device *dev,
4523 struct device_attribute *attr, char *buf)
4524 {
4525 struct scsi_device *sdev = to_scsi_device(dev);
4526 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4527 struct ipr_resource_entry *res;
4528 unsigned long lock_flags = 0;
4529 ssize_t len;
4530
4531 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4532 res = (struct ipr_resource_entry *)sdev->hostdata;
4533 if (res)
4534 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4535 else
4536 len = -ENXIO;
4537 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4538 return len;
4539 }
4540
4541 /**
4542 * ipr_store_raw_mode - Change the adapter's raw mode
4543 * @dev: class device struct
4544 * @buf: buffer
4545 *
4546 * Return value:
4547 * number of bytes printed to buffer
4548 **/
ipr_store_raw_mode(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4549 static ssize_t ipr_store_raw_mode(struct device *dev,
4550 struct device_attribute *attr,
4551 const char *buf, size_t count)
4552 {
4553 struct scsi_device *sdev = to_scsi_device(dev);
4554 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4555 struct ipr_resource_entry *res;
4556 unsigned long lock_flags = 0;
4557 ssize_t len;
4558
4559 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4560 res = (struct ipr_resource_entry *)sdev->hostdata;
4561 if (res) {
4562 if (ipr_is_af_dasd_device(res)) {
4563 res->raw_mode = simple_strtoul(buf, NULL, 10);
4564 len = strlen(buf);
4565 if (res->sdev)
4566 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4567 res->raw_mode ? "enabled" : "disabled");
4568 } else
4569 len = -EINVAL;
4570 } else
4571 len = -ENXIO;
4572 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4573 return len;
4574 }
4575
4576 static struct device_attribute ipr_raw_mode_attr = {
4577 .attr = {
4578 .name = "raw_mode",
4579 .mode = S_IRUGO | S_IWUSR,
4580 },
4581 .show = ipr_show_raw_mode,
4582 .store = ipr_store_raw_mode
4583 };
4584
4585 static struct device_attribute *ipr_dev_attrs[] = {
4586 &ipr_adapter_handle_attr,
4587 &ipr_resource_path_attr,
4588 &ipr_device_id_attr,
4589 &ipr_resource_type_attr,
4590 &ipr_raw_mode_attr,
4591 NULL,
4592 };
4593
4594 /**
4595 * ipr_biosparam - Return the HSC mapping
4596 * @sdev: scsi device struct
4597 * @block_device: block device pointer
4598 * @capacity: capacity of the device
4599 * @parm: Array containing returned HSC values.
4600 *
4601 * This function generates the HSC parms that fdisk uses.
4602 * We want to make sure we return something that places partitions
4603 * on 4k boundaries for best performance with the IOA.
4604 *
4605 * Return value:
4606 * 0 on success
4607 **/
ipr_biosparam(struct scsi_device * sdev,struct block_device * block_device,sector_t capacity,int * parm)4608 static int ipr_biosparam(struct scsi_device *sdev,
4609 struct block_device *block_device,
4610 sector_t capacity, int *parm)
4611 {
4612 int heads, sectors;
4613 sector_t cylinders;
4614
4615 heads = 128;
4616 sectors = 32;
4617
4618 cylinders = capacity;
4619 sector_div(cylinders, (128 * 32));
4620
4621 /* return result */
4622 parm[0] = heads;
4623 parm[1] = sectors;
4624 parm[2] = cylinders;
4625
4626 return 0;
4627 }
4628
4629 /**
4630 * ipr_find_starget - Find target based on bus/target.
4631 * @starget: scsi target struct
4632 *
4633 * Return value:
4634 * resource entry pointer if found / NULL if not found
4635 **/
ipr_find_starget(struct scsi_target * starget)4636 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4637 {
4638 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4639 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4640 struct ipr_resource_entry *res;
4641
4642 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4643 if ((res->bus == starget->channel) &&
4644 (res->target == starget->id)) {
4645 return res;
4646 }
4647 }
4648
4649 return NULL;
4650 }
4651
4652 static struct ata_port_info sata_port_info;
4653
4654 /**
4655 * ipr_target_alloc - Prepare for commands to a SCSI target
4656 * @starget: scsi target struct
4657 *
4658 * If the device is a SATA device, this function allocates an
4659 * ATA port with libata, else it does nothing.
4660 *
4661 * Return value:
4662 * 0 on success / non-0 on failure
4663 **/
ipr_target_alloc(struct scsi_target * starget)4664 static int ipr_target_alloc(struct scsi_target *starget)
4665 {
4666 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4667 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4668 struct ipr_sata_port *sata_port;
4669 struct ata_port *ap;
4670 struct ipr_resource_entry *res;
4671 unsigned long lock_flags;
4672
4673 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4674 res = ipr_find_starget(starget);
4675 starget->hostdata = NULL;
4676
4677 if (res && ipr_is_gata(res)) {
4678 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4679 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4680 if (!sata_port)
4681 return -ENOMEM;
4682
4683 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4684 if (ap) {
4685 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4686 sata_port->ioa_cfg = ioa_cfg;
4687 sata_port->ap = ap;
4688 sata_port->res = res;
4689
4690 res->sata_port = sata_port;
4691 ap->private_data = sata_port;
4692 starget->hostdata = sata_port;
4693 } else {
4694 kfree(sata_port);
4695 return -ENOMEM;
4696 }
4697 }
4698 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4699
4700 return 0;
4701 }
4702
4703 /**
4704 * ipr_target_destroy - Destroy a SCSI target
4705 * @starget: scsi target struct
4706 *
4707 * If the device was a SATA device, this function frees the libata
4708 * ATA port, else it does nothing.
4709 *
4710 **/
ipr_target_destroy(struct scsi_target * starget)4711 static void ipr_target_destroy(struct scsi_target *starget)
4712 {
4713 struct ipr_sata_port *sata_port = starget->hostdata;
4714 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4715 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4716
4717 if (ioa_cfg->sis64) {
4718 if (!ipr_find_starget(starget)) {
4719 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4720 clear_bit(starget->id, ioa_cfg->array_ids);
4721 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4722 clear_bit(starget->id, ioa_cfg->vset_ids);
4723 else if (starget->channel == 0)
4724 clear_bit(starget->id, ioa_cfg->target_ids);
4725 }
4726 }
4727
4728 if (sata_port) {
4729 starget->hostdata = NULL;
4730 ata_sas_port_destroy(sata_port->ap);
4731 kfree(sata_port);
4732 }
4733 }
4734
4735 /**
4736 * ipr_find_sdev - Find device based on bus/target/lun.
4737 * @sdev: scsi device struct
4738 *
4739 * Return value:
4740 * resource entry pointer if found / NULL if not found
4741 **/
ipr_find_sdev(struct scsi_device * sdev)4742 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4743 {
4744 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4745 struct ipr_resource_entry *res;
4746
4747 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4748 if ((res->bus == sdev->channel) &&
4749 (res->target == sdev->id) &&
4750 (res->lun == sdev->lun))
4751 return res;
4752 }
4753
4754 return NULL;
4755 }
4756
4757 /**
4758 * ipr_slave_destroy - Unconfigure a SCSI device
4759 * @sdev: scsi device struct
4760 *
4761 * Return value:
4762 * nothing
4763 **/
ipr_slave_destroy(struct scsi_device * sdev)4764 static void ipr_slave_destroy(struct scsi_device *sdev)
4765 {
4766 struct ipr_resource_entry *res;
4767 struct ipr_ioa_cfg *ioa_cfg;
4768 unsigned long lock_flags = 0;
4769
4770 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4771
4772 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4773 res = (struct ipr_resource_entry *) sdev->hostdata;
4774 if (res) {
4775 if (res->sata_port)
4776 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4777 sdev->hostdata = NULL;
4778 res->sdev = NULL;
4779 res->sata_port = NULL;
4780 }
4781 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4782 }
4783
4784 /**
4785 * ipr_slave_configure - Configure a SCSI device
4786 * @sdev: scsi device struct
4787 *
4788 * This function configures the specified scsi device.
4789 *
4790 * Return value:
4791 * 0 on success
4792 **/
ipr_slave_configure(struct scsi_device * sdev)4793 static int ipr_slave_configure(struct scsi_device *sdev)
4794 {
4795 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4796 struct ipr_resource_entry *res;
4797 struct ata_port *ap = NULL;
4798 unsigned long lock_flags = 0;
4799 char buffer[IPR_MAX_RES_PATH_LENGTH];
4800
4801 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4802 res = sdev->hostdata;
4803 if (res) {
4804 if (ipr_is_af_dasd_device(res))
4805 sdev->type = TYPE_RAID;
4806 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4807 sdev->scsi_level = 4;
4808 sdev->no_uld_attach = 1;
4809 }
4810 if (ipr_is_vset_device(res)) {
4811 sdev->scsi_level = SCSI_SPC_3;
4812 blk_queue_rq_timeout(sdev->request_queue,
4813 IPR_VSET_RW_TIMEOUT);
4814 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4815 }
4816 if (ipr_is_gata(res) && res->sata_port)
4817 ap = res->sata_port->ap;
4818 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4819
4820 if (ap) {
4821 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4822 ata_sas_slave_configure(sdev, ap);
4823 }
4824
4825 if (ioa_cfg->sis64)
4826 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4827 ipr_format_res_path(ioa_cfg,
4828 res->res_path, buffer, sizeof(buffer)));
4829 return 0;
4830 }
4831 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4832 return 0;
4833 }
4834
4835 /**
4836 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4837 * @sdev: scsi device struct
4838 *
4839 * This function initializes an ATA port so that future commands
4840 * sent through queuecommand will work.
4841 *
4842 * Return value:
4843 * 0 on success
4844 **/
ipr_ata_slave_alloc(struct scsi_device * sdev)4845 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4846 {
4847 struct ipr_sata_port *sata_port = NULL;
4848 int rc = -ENXIO;
4849
4850 ENTER;
4851 if (sdev->sdev_target)
4852 sata_port = sdev->sdev_target->hostdata;
4853 if (sata_port) {
4854 rc = ata_sas_port_init(sata_port->ap);
4855 if (rc == 0)
4856 rc = ata_sas_sync_probe(sata_port->ap);
4857 }
4858
4859 if (rc)
4860 ipr_slave_destroy(sdev);
4861
4862 LEAVE;
4863 return rc;
4864 }
4865
4866 /**
4867 * ipr_slave_alloc - Prepare for commands to a device.
4868 * @sdev: scsi device struct
4869 *
4870 * This function saves a pointer to the resource entry
4871 * in the scsi device struct if the device exists. We
4872 * can then use this pointer in ipr_queuecommand when
4873 * handling new commands.
4874 *
4875 * Return value:
4876 * 0 on success / -ENXIO if device does not exist
4877 **/
ipr_slave_alloc(struct scsi_device * sdev)4878 static int ipr_slave_alloc(struct scsi_device *sdev)
4879 {
4880 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4881 struct ipr_resource_entry *res;
4882 unsigned long lock_flags;
4883 int rc = -ENXIO;
4884
4885 sdev->hostdata = NULL;
4886
4887 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4888
4889 res = ipr_find_sdev(sdev);
4890 if (res) {
4891 res->sdev = sdev;
4892 res->add_to_ml = 0;
4893 res->in_erp = 0;
4894 sdev->hostdata = res;
4895 if (!ipr_is_naca_model(res))
4896 res->needs_sync_complete = 1;
4897 rc = 0;
4898 if (ipr_is_gata(res)) {
4899 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4900 return ipr_ata_slave_alloc(sdev);
4901 }
4902 }
4903
4904 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4905
4906 return rc;
4907 }
4908
4909 /**
4910 * ipr_match_lun - Match function for specified LUN
4911 * @ipr_cmd: ipr command struct
4912 * @device: device to match (sdev)
4913 *
4914 * Returns:
4915 * 1 if command matches sdev / 0 if command does not match sdev
4916 **/
ipr_match_lun(struct ipr_cmnd * ipr_cmd,void * device)4917 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
4918 {
4919 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
4920 return 1;
4921 return 0;
4922 }
4923
4924 /**
4925 * ipr_wait_for_ops - Wait for matching commands to complete
4926 * @ipr_cmd: ipr command struct
4927 * @device: device to match (sdev)
4928 * @match: match function to use
4929 *
4930 * Returns:
4931 * SUCCESS / FAILED
4932 **/
ipr_wait_for_ops(struct ipr_ioa_cfg * ioa_cfg,void * device,int (* match)(struct ipr_cmnd *,void *))4933 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
4934 int (*match)(struct ipr_cmnd *, void *))
4935 {
4936 struct ipr_cmnd *ipr_cmd;
4937 int wait;
4938 unsigned long flags;
4939 struct ipr_hrr_queue *hrrq;
4940 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
4941 DECLARE_COMPLETION_ONSTACK(comp);
4942
4943 ENTER;
4944 do {
4945 wait = 0;
4946
4947 for_each_hrrq(hrrq, ioa_cfg) {
4948 spin_lock_irqsave(hrrq->lock, flags);
4949 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4950 if (match(ipr_cmd, device)) {
4951 ipr_cmd->eh_comp = ∁
4952 wait++;
4953 }
4954 }
4955 spin_unlock_irqrestore(hrrq->lock, flags);
4956 }
4957
4958 if (wait) {
4959 timeout = wait_for_completion_timeout(&comp, timeout);
4960
4961 if (!timeout) {
4962 wait = 0;
4963
4964 for_each_hrrq(hrrq, ioa_cfg) {
4965 spin_lock_irqsave(hrrq->lock, flags);
4966 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4967 if (match(ipr_cmd, device)) {
4968 ipr_cmd->eh_comp = NULL;
4969 wait++;
4970 }
4971 }
4972 spin_unlock_irqrestore(hrrq->lock, flags);
4973 }
4974
4975 if (wait)
4976 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
4977 LEAVE;
4978 return wait ? FAILED : SUCCESS;
4979 }
4980 }
4981 } while (wait);
4982
4983 LEAVE;
4984 return SUCCESS;
4985 }
4986
ipr_eh_host_reset(struct scsi_cmnd * cmd)4987 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4988 {
4989 struct ipr_ioa_cfg *ioa_cfg;
4990 unsigned long lock_flags = 0;
4991 int rc = SUCCESS;
4992
4993 ENTER;
4994 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4995 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4996
4997 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4998 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4999 dev_err(&ioa_cfg->pdev->dev,
5000 "Adapter being reset as a result of error recovery.\n");
5001
5002 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5003 ioa_cfg->sdt_state = GET_DUMP;
5004 }
5005
5006 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5007 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5008 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5009
5010 /* If we got hit with a host reset while we were already resetting
5011 the adapter for some reason, and the reset failed. */
5012 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5013 ipr_trace;
5014 rc = FAILED;
5015 }
5016
5017 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5018 LEAVE;
5019 return rc;
5020 }
5021
5022 /**
5023 * ipr_device_reset - Reset the device
5024 * @ioa_cfg: ioa config struct
5025 * @res: resource entry struct
5026 *
5027 * This function issues a device reset to the affected device.
5028 * If the device is a SCSI device, a LUN reset will be sent
5029 * to the device first. If that does not work, a target reset
5030 * will be sent. If the device is a SATA device, a PHY reset will
5031 * be sent.
5032 *
5033 * Return value:
5034 * 0 on success / non-zero on failure
5035 **/
ipr_device_reset(struct ipr_ioa_cfg * ioa_cfg,struct ipr_resource_entry * res)5036 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5037 struct ipr_resource_entry *res)
5038 {
5039 struct ipr_cmnd *ipr_cmd;
5040 struct ipr_ioarcb *ioarcb;
5041 struct ipr_cmd_pkt *cmd_pkt;
5042 struct ipr_ioarcb_ata_regs *regs;
5043 u32 ioasc;
5044
5045 ENTER;
5046 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5047 ioarcb = &ipr_cmd->ioarcb;
5048 cmd_pkt = &ioarcb->cmd_pkt;
5049
5050 if (ipr_cmd->ioa_cfg->sis64) {
5051 regs = &ipr_cmd->i.ata_ioadl.regs;
5052 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5053 } else
5054 regs = &ioarcb->u.add_data.u.regs;
5055
5056 ioarcb->res_handle = res->res_handle;
5057 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5058 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5059 if (ipr_is_gata(res)) {
5060 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5061 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5062 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5063 }
5064
5065 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5066 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5067 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5068 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5069 if (ipr_cmd->ioa_cfg->sis64)
5070 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5071 sizeof(struct ipr_ioasa_gata));
5072 else
5073 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5074 sizeof(struct ipr_ioasa_gata));
5075 }
5076
5077 LEAVE;
5078 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5079 }
5080
5081 /**
5082 * ipr_sata_reset - Reset the SATA port
5083 * @link: SATA link to reset
5084 * @classes: class of the attached device
5085 *
5086 * This function issues a SATA phy reset to the affected ATA link.
5087 *
5088 * Return value:
5089 * 0 on success / non-zero on failure
5090 **/
ipr_sata_reset(struct ata_link * link,unsigned int * classes,unsigned long deadline)5091 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5092 unsigned long deadline)
5093 {
5094 struct ipr_sata_port *sata_port = link->ap->private_data;
5095 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5096 struct ipr_resource_entry *res;
5097 unsigned long lock_flags = 0;
5098 int rc = -ENXIO;
5099
5100 ENTER;
5101 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5102 while (ioa_cfg->in_reset_reload) {
5103 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5104 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5105 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5106 }
5107
5108 res = sata_port->res;
5109 if (res) {
5110 rc = ipr_device_reset(ioa_cfg, res);
5111 *classes = res->ata_class;
5112 }
5113
5114 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5115 LEAVE;
5116 return rc;
5117 }
5118
5119 /**
5120 * ipr_eh_dev_reset - Reset the device
5121 * @scsi_cmd: scsi command struct
5122 *
5123 * This function issues a device reset to the affected device.
5124 * A LUN reset will be sent to the device first. If that does
5125 * not work, a target reset will be sent.
5126 *
5127 * Return value:
5128 * SUCCESS / FAILED
5129 **/
__ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)5130 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5131 {
5132 struct ipr_cmnd *ipr_cmd;
5133 struct ipr_ioa_cfg *ioa_cfg;
5134 struct ipr_resource_entry *res;
5135 struct ata_port *ap;
5136 int rc = 0;
5137 struct ipr_hrr_queue *hrrq;
5138
5139 ENTER;
5140 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5141 res = scsi_cmd->device->hostdata;
5142
5143 if (!res)
5144 return FAILED;
5145
5146 /*
5147 * If we are currently going through reset/reload, return failed. This will force the
5148 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5149 * reset to complete
5150 */
5151 if (ioa_cfg->in_reset_reload)
5152 return FAILED;
5153 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5154 return FAILED;
5155
5156 for_each_hrrq(hrrq, ioa_cfg) {
5157 spin_lock(&hrrq->_lock);
5158 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5159 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5160 if (ipr_cmd->scsi_cmd)
5161 ipr_cmd->done = ipr_scsi_eh_done;
5162 if (ipr_cmd->qc)
5163 ipr_cmd->done = ipr_sata_eh_done;
5164 if (ipr_cmd->qc &&
5165 !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5166 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5167 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5168 }
5169 }
5170 }
5171 spin_unlock(&hrrq->_lock);
5172 }
5173 res->resetting_device = 1;
5174 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5175
5176 if (ipr_is_gata(res) && res->sata_port) {
5177 ap = res->sata_port->ap;
5178 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5179 ata_std_error_handler(ap);
5180 spin_lock_irq(scsi_cmd->device->host->host_lock);
5181
5182 for_each_hrrq(hrrq, ioa_cfg) {
5183 spin_lock(&hrrq->_lock);
5184 list_for_each_entry(ipr_cmd,
5185 &hrrq->hrrq_pending_q, queue) {
5186 if (ipr_cmd->ioarcb.res_handle ==
5187 res->res_handle) {
5188 rc = -EIO;
5189 break;
5190 }
5191 }
5192 spin_unlock(&hrrq->_lock);
5193 }
5194 } else
5195 rc = ipr_device_reset(ioa_cfg, res);
5196 res->resetting_device = 0;
5197 res->reset_occurred = 1;
5198
5199 LEAVE;
5200 return rc ? FAILED : SUCCESS;
5201 }
5202
ipr_eh_dev_reset(struct scsi_cmnd * cmd)5203 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5204 {
5205 int rc;
5206 struct ipr_ioa_cfg *ioa_cfg;
5207
5208 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5209
5210 spin_lock_irq(cmd->device->host->host_lock);
5211 rc = __ipr_eh_dev_reset(cmd);
5212 spin_unlock_irq(cmd->device->host->host_lock);
5213
5214 if (rc == SUCCESS)
5215 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5216
5217 return rc;
5218 }
5219
5220 /**
5221 * ipr_bus_reset_done - Op done function for bus reset.
5222 * @ipr_cmd: ipr command struct
5223 *
5224 * This function is the op done function for a bus reset
5225 *
5226 * Return value:
5227 * none
5228 **/
ipr_bus_reset_done(struct ipr_cmnd * ipr_cmd)5229 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5230 {
5231 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5232 struct ipr_resource_entry *res;
5233
5234 ENTER;
5235 if (!ioa_cfg->sis64)
5236 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5237 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5238 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5239 break;
5240 }
5241 }
5242
5243 /*
5244 * If abort has not completed, indicate the reset has, else call the
5245 * abort's done function to wake the sleeping eh thread
5246 */
5247 if (ipr_cmd->sibling->sibling)
5248 ipr_cmd->sibling->sibling = NULL;
5249 else
5250 ipr_cmd->sibling->done(ipr_cmd->sibling);
5251
5252 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5253 LEAVE;
5254 }
5255
5256 /**
5257 * ipr_abort_timeout - An abort task has timed out
5258 * @ipr_cmd: ipr command struct
5259 *
5260 * This function handles when an abort task times out. If this
5261 * happens we issue a bus reset since we have resources tied
5262 * up that must be freed before returning to the midlayer.
5263 *
5264 * Return value:
5265 * none
5266 **/
ipr_abort_timeout(struct ipr_cmnd * ipr_cmd)5267 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5268 {
5269 struct ipr_cmnd *reset_cmd;
5270 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5271 struct ipr_cmd_pkt *cmd_pkt;
5272 unsigned long lock_flags = 0;
5273
5274 ENTER;
5275 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5276 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5277 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5278 return;
5279 }
5280
5281 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5282 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5283 ipr_cmd->sibling = reset_cmd;
5284 reset_cmd->sibling = ipr_cmd;
5285 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5286 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5287 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5288 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5289 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5290
5291 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5292 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5293 LEAVE;
5294 }
5295
5296 /**
5297 * ipr_cancel_op - Cancel specified op
5298 * @scsi_cmd: scsi command struct
5299 *
5300 * This function cancels specified op.
5301 *
5302 * Return value:
5303 * SUCCESS / FAILED
5304 **/
ipr_cancel_op(struct scsi_cmnd * scsi_cmd)5305 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5306 {
5307 struct ipr_cmnd *ipr_cmd;
5308 struct ipr_ioa_cfg *ioa_cfg;
5309 struct ipr_resource_entry *res;
5310 struct ipr_cmd_pkt *cmd_pkt;
5311 u32 ioasc, int_reg;
5312 int op_found = 0;
5313 struct ipr_hrr_queue *hrrq;
5314
5315 ENTER;
5316 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5317 res = scsi_cmd->device->hostdata;
5318
5319 /* If we are currently going through reset/reload, return failed.
5320 * This will force the mid-layer to call ipr_eh_host_reset,
5321 * which will then go to sleep and wait for the reset to complete
5322 */
5323 if (ioa_cfg->in_reset_reload ||
5324 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5325 return FAILED;
5326 if (!res)
5327 return FAILED;
5328
5329 /*
5330 * If we are aborting a timed out op, chances are that the timeout was caused
5331 * by a still not detected EEH error. In such cases, reading a register will
5332 * trigger the EEH recovery infrastructure.
5333 */
5334 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5335
5336 if (!ipr_is_gscsi(res))
5337 return FAILED;
5338
5339 for_each_hrrq(hrrq, ioa_cfg) {
5340 spin_lock(&hrrq->_lock);
5341 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5342 if (ipr_cmd->scsi_cmd == scsi_cmd) {
5343 ipr_cmd->done = ipr_scsi_eh_done;
5344 op_found = 1;
5345 break;
5346 }
5347 }
5348 spin_unlock(&hrrq->_lock);
5349 }
5350
5351 if (!op_found)
5352 return SUCCESS;
5353
5354 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5355 ipr_cmd->ioarcb.res_handle = res->res_handle;
5356 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5357 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5358 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5359 ipr_cmd->u.sdev = scsi_cmd->device;
5360
5361 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5362 scsi_cmd->cmnd[0]);
5363 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5364 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5365
5366 /*
5367 * If the abort task timed out and we sent a bus reset, we will get
5368 * one the following responses to the abort
5369 */
5370 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5371 ioasc = 0;
5372 ipr_trace;
5373 }
5374
5375 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5376 if (!ipr_is_naca_model(res))
5377 res->needs_sync_complete = 1;
5378
5379 LEAVE;
5380 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5381 }
5382
5383 /**
5384 * ipr_eh_abort - Abort a single op
5385 * @scsi_cmd: scsi command struct
5386 *
5387 * Return value:
5388 * 0 if scan in progress / 1 if scan is complete
5389 **/
ipr_scan_finished(struct Scsi_Host * shost,unsigned long elapsed_time)5390 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5391 {
5392 unsigned long lock_flags;
5393 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5394 int rc = 0;
5395
5396 spin_lock_irqsave(shost->host_lock, lock_flags);
5397 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5398 rc = 1;
5399 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5400 rc = 1;
5401 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5402 return rc;
5403 }
5404
5405 /**
5406 * ipr_eh_host_reset - Reset the host adapter
5407 * @scsi_cmd: scsi command struct
5408 *
5409 * Return value:
5410 * SUCCESS / FAILED
5411 **/
ipr_eh_abort(struct scsi_cmnd * scsi_cmd)5412 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5413 {
5414 unsigned long flags;
5415 int rc;
5416 struct ipr_ioa_cfg *ioa_cfg;
5417
5418 ENTER;
5419
5420 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5421
5422 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5423 rc = ipr_cancel_op(scsi_cmd);
5424 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5425
5426 if (rc == SUCCESS)
5427 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5428 LEAVE;
5429 return rc;
5430 }
5431
5432 /**
5433 * ipr_handle_other_interrupt - Handle "other" interrupts
5434 * @ioa_cfg: ioa config struct
5435 * @int_reg: interrupt register
5436 *
5437 * Return value:
5438 * IRQ_NONE / IRQ_HANDLED
5439 **/
ipr_handle_other_interrupt(struct ipr_ioa_cfg * ioa_cfg,u32 int_reg)5440 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5441 u32 int_reg)
5442 {
5443 irqreturn_t rc = IRQ_HANDLED;
5444 u32 int_mask_reg;
5445
5446 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5447 int_reg &= ~int_mask_reg;
5448
5449 /* If an interrupt on the adapter did not occur, ignore it.
5450 * Or in the case of SIS 64, check for a stage change interrupt.
5451 */
5452 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5453 if (ioa_cfg->sis64) {
5454 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5455 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5456 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5457
5458 /* clear stage change */
5459 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5460 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5461 list_del(&ioa_cfg->reset_cmd->queue);
5462 del_timer(&ioa_cfg->reset_cmd->timer);
5463 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5464 return IRQ_HANDLED;
5465 }
5466 }
5467
5468 return IRQ_NONE;
5469 }
5470
5471 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5472 /* Mask the interrupt */
5473 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5474 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5475
5476 list_del(&ioa_cfg->reset_cmd->queue);
5477 del_timer(&ioa_cfg->reset_cmd->timer);
5478 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5479 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5480 if (ioa_cfg->clear_isr) {
5481 if (ipr_debug && printk_ratelimit())
5482 dev_err(&ioa_cfg->pdev->dev,
5483 "Spurious interrupt detected. 0x%08X\n", int_reg);
5484 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5485 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5486 return IRQ_NONE;
5487 }
5488 } else {
5489 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5490 ioa_cfg->ioa_unit_checked = 1;
5491 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5492 dev_err(&ioa_cfg->pdev->dev,
5493 "No Host RRQ. 0x%08X\n", int_reg);
5494 else
5495 dev_err(&ioa_cfg->pdev->dev,
5496 "Permanent IOA failure. 0x%08X\n", int_reg);
5497
5498 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5499 ioa_cfg->sdt_state = GET_DUMP;
5500
5501 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5502 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5503 }
5504
5505 return rc;
5506 }
5507
5508 /**
5509 * ipr_isr_eh - Interrupt service routine error handler
5510 * @ioa_cfg: ioa config struct
5511 * @msg: message to log
5512 *
5513 * Return value:
5514 * none
5515 **/
ipr_isr_eh(struct ipr_ioa_cfg * ioa_cfg,char * msg,u16 number)5516 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5517 {
5518 ioa_cfg->errors_logged++;
5519 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5520
5521 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5522 ioa_cfg->sdt_state = GET_DUMP;
5523
5524 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5525 }
5526
ipr_process_hrrq(struct ipr_hrr_queue * hrr_queue,int budget,struct list_head * doneq)5527 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5528 struct list_head *doneq)
5529 {
5530 u32 ioasc;
5531 u16 cmd_index;
5532 struct ipr_cmnd *ipr_cmd;
5533 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5534 int num_hrrq = 0;
5535
5536 /* If interrupts are disabled, ignore the interrupt */
5537 if (!hrr_queue->allow_interrupts)
5538 return 0;
5539
5540 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5541 hrr_queue->toggle_bit) {
5542
5543 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5544 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5545 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5546
5547 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5548 cmd_index < hrr_queue->min_cmd_id)) {
5549 ipr_isr_eh(ioa_cfg,
5550 "Invalid response handle from IOA: ",
5551 cmd_index);
5552 break;
5553 }
5554
5555 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5556 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5557
5558 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5559
5560 list_move_tail(&ipr_cmd->queue, doneq);
5561
5562 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5563 hrr_queue->hrrq_curr++;
5564 } else {
5565 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5566 hrr_queue->toggle_bit ^= 1u;
5567 }
5568 num_hrrq++;
5569 if (budget > 0 && num_hrrq >= budget)
5570 break;
5571 }
5572
5573 return num_hrrq;
5574 }
5575
ipr_iopoll(struct blk_iopoll * iop,int budget)5576 static int ipr_iopoll(struct blk_iopoll *iop, int budget)
5577 {
5578 struct ipr_ioa_cfg *ioa_cfg;
5579 struct ipr_hrr_queue *hrrq;
5580 struct ipr_cmnd *ipr_cmd, *temp;
5581 unsigned long hrrq_flags;
5582 int completed_ops;
5583 LIST_HEAD(doneq);
5584
5585 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5586 ioa_cfg = hrrq->ioa_cfg;
5587
5588 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5589 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5590
5591 if (completed_ops < budget)
5592 blk_iopoll_complete(iop);
5593 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5594
5595 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5596 list_del(&ipr_cmd->queue);
5597 del_timer(&ipr_cmd->timer);
5598 ipr_cmd->fast_done(ipr_cmd);
5599 }
5600
5601 return completed_ops;
5602 }
5603
5604 /**
5605 * ipr_isr - Interrupt service routine
5606 * @irq: irq number
5607 * @devp: pointer to ioa config struct
5608 *
5609 * Return value:
5610 * IRQ_NONE / IRQ_HANDLED
5611 **/
ipr_isr(int irq,void * devp)5612 static irqreturn_t ipr_isr(int irq, void *devp)
5613 {
5614 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5615 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5616 unsigned long hrrq_flags = 0;
5617 u32 int_reg = 0;
5618 int num_hrrq = 0;
5619 int irq_none = 0;
5620 struct ipr_cmnd *ipr_cmd, *temp;
5621 irqreturn_t rc = IRQ_NONE;
5622 LIST_HEAD(doneq);
5623
5624 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5625 /* If interrupts are disabled, ignore the interrupt */
5626 if (!hrrq->allow_interrupts) {
5627 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5628 return IRQ_NONE;
5629 }
5630
5631 while (1) {
5632 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5633 rc = IRQ_HANDLED;
5634
5635 if (!ioa_cfg->clear_isr)
5636 break;
5637
5638 /* Clear the PCI interrupt */
5639 num_hrrq = 0;
5640 do {
5641 writel(IPR_PCII_HRRQ_UPDATED,
5642 ioa_cfg->regs.clr_interrupt_reg32);
5643 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5644 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5645 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5646
5647 } else if (rc == IRQ_NONE && irq_none == 0) {
5648 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5649 irq_none++;
5650 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5651 int_reg & IPR_PCII_HRRQ_UPDATED) {
5652 ipr_isr_eh(ioa_cfg,
5653 "Error clearing HRRQ: ", num_hrrq);
5654 rc = IRQ_HANDLED;
5655 break;
5656 } else
5657 break;
5658 }
5659
5660 if (unlikely(rc == IRQ_NONE))
5661 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5662
5663 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5664 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5665 list_del(&ipr_cmd->queue);
5666 del_timer(&ipr_cmd->timer);
5667 ipr_cmd->fast_done(ipr_cmd);
5668 }
5669 return rc;
5670 }
5671
5672 /**
5673 * ipr_isr_mhrrq - Interrupt service routine
5674 * @irq: irq number
5675 * @devp: pointer to ioa config struct
5676 *
5677 * Return value:
5678 * IRQ_NONE / IRQ_HANDLED
5679 **/
ipr_isr_mhrrq(int irq,void * devp)5680 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5681 {
5682 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5683 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5684 unsigned long hrrq_flags = 0;
5685 struct ipr_cmnd *ipr_cmd, *temp;
5686 irqreturn_t rc = IRQ_NONE;
5687 LIST_HEAD(doneq);
5688
5689 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5690
5691 /* If interrupts are disabled, ignore the interrupt */
5692 if (!hrrq->allow_interrupts) {
5693 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5694 return IRQ_NONE;
5695 }
5696
5697 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5698 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5699 hrrq->toggle_bit) {
5700 if (!blk_iopoll_sched_prep(&hrrq->iopoll))
5701 blk_iopoll_sched(&hrrq->iopoll);
5702 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5703 return IRQ_HANDLED;
5704 }
5705 } else {
5706 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5707 hrrq->toggle_bit)
5708
5709 if (ipr_process_hrrq(hrrq, -1, &doneq))
5710 rc = IRQ_HANDLED;
5711 }
5712
5713 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5714
5715 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5716 list_del(&ipr_cmd->queue);
5717 del_timer(&ipr_cmd->timer);
5718 ipr_cmd->fast_done(ipr_cmd);
5719 }
5720 return rc;
5721 }
5722
5723 /**
5724 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5725 * @ioa_cfg: ioa config struct
5726 * @ipr_cmd: ipr command struct
5727 *
5728 * Return value:
5729 * 0 on success / -1 on failure
5730 **/
ipr_build_ioadl64(struct ipr_ioa_cfg * ioa_cfg,struct ipr_cmnd * ipr_cmd)5731 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5732 struct ipr_cmnd *ipr_cmd)
5733 {
5734 int i, nseg;
5735 struct scatterlist *sg;
5736 u32 length;
5737 u32 ioadl_flags = 0;
5738 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5739 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5740 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5741
5742 length = scsi_bufflen(scsi_cmd);
5743 if (!length)
5744 return 0;
5745
5746 nseg = scsi_dma_map(scsi_cmd);
5747 if (nseg < 0) {
5748 if (printk_ratelimit())
5749 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5750 return -1;
5751 }
5752
5753 ipr_cmd->dma_use_sg = nseg;
5754
5755 ioarcb->data_transfer_length = cpu_to_be32(length);
5756 ioarcb->ioadl_len =
5757 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5758
5759 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5760 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5761 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5762 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5763 ioadl_flags = IPR_IOADL_FLAGS_READ;
5764
5765 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5766 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5767 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5768 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5769 }
5770
5771 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5772 return 0;
5773 }
5774
5775 /**
5776 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5777 * @ioa_cfg: ioa config struct
5778 * @ipr_cmd: ipr command struct
5779 *
5780 * Return value:
5781 * 0 on success / -1 on failure
5782 **/
ipr_build_ioadl(struct ipr_ioa_cfg * ioa_cfg,struct ipr_cmnd * ipr_cmd)5783 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5784 struct ipr_cmnd *ipr_cmd)
5785 {
5786 int i, nseg;
5787 struct scatterlist *sg;
5788 u32 length;
5789 u32 ioadl_flags = 0;
5790 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5791 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5792 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5793
5794 length = scsi_bufflen(scsi_cmd);
5795 if (!length)
5796 return 0;
5797
5798 nseg = scsi_dma_map(scsi_cmd);
5799 if (nseg < 0) {
5800 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5801 return -1;
5802 }
5803
5804 ipr_cmd->dma_use_sg = nseg;
5805
5806 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5807 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5808 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5809 ioarcb->data_transfer_length = cpu_to_be32(length);
5810 ioarcb->ioadl_len =
5811 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5812 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5813 ioadl_flags = IPR_IOADL_FLAGS_READ;
5814 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5815 ioarcb->read_ioadl_len =
5816 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5817 }
5818
5819 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5820 ioadl = ioarcb->u.add_data.u.ioadl;
5821 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5822 offsetof(struct ipr_ioarcb, u.add_data));
5823 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5824 }
5825
5826 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5827 ioadl[i].flags_and_data_len =
5828 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5829 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5830 }
5831
5832 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5833 return 0;
5834 }
5835
5836 /**
5837 * ipr_erp_done - Process completion of ERP for a device
5838 * @ipr_cmd: ipr command struct
5839 *
5840 * This function copies the sense buffer into the scsi_cmd
5841 * struct and pushes the scsi_done function.
5842 *
5843 * Return value:
5844 * nothing
5845 **/
ipr_erp_done(struct ipr_cmnd * ipr_cmd)5846 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5847 {
5848 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5849 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5850 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5851
5852 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5853 scsi_cmd->result |= (DID_ERROR << 16);
5854 scmd_printk(KERN_ERR, scsi_cmd,
5855 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5856 } else {
5857 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5858 SCSI_SENSE_BUFFERSIZE);
5859 }
5860
5861 if (res) {
5862 if (!ipr_is_naca_model(res))
5863 res->needs_sync_complete = 1;
5864 res->in_erp = 0;
5865 }
5866 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5867 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5868 scsi_cmd->scsi_done(scsi_cmd);
5869 }
5870
5871 /**
5872 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5873 * @ipr_cmd: ipr command struct
5874 *
5875 * Return value:
5876 * none
5877 **/
ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd * ipr_cmd)5878 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5879 {
5880 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5881 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5882 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5883
5884 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5885 ioarcb->data_transfer_length = 0;
5886 ioarcb->read_data_transfer_length = 0;
5887 ioarcb->ioadl_len = 0;
5888 ioarcb->read_ioadl_len = 0;
5889 ioasa->hdr.ioasc = 0;
5890 ioasa->hdr.residual_data_len = 0;
5891
5892 if (ipr_cmd->ioa_cfg->sis64)
5893 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5894 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5895 else {
5896 ioarcb->write_ioadl_addr =
5897 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5898 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5899 }
5900 }
5901
5902 /**
5903 * ipr_erp_request_sense - Send request sense to a device
5904 * @ipr_cmd: ipr command struct
5905 *
5906 * This function sends a request sense to a device as a result
5907 * of a check condition.
5908 *
5909 * Return value:
5910 * nothing
5911 **/
ipr_erp_request_sense(struct ipr_cmnd * ipr_cmd)5912 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5913 {
5914 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5915 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5916
5917 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5918 ipr_erp_done(ipr_cmd);
5919 return;
5920 }
5921
5922 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5923
5924 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5925 cmd_pkt->cdb[0] = REQUEST_SENSE;
5926 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5927 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5928 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5929 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5930
5931 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5932 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5933
5934 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5935 IPR_REQUEST_SENSE_TIMEOUT * 2);
5936 }
5937
5938 /**
5939 * ipr_erp_cancel_all - Send cancel all to a device
5940 * @ipr_cmd: ipr command struct
5941 *
5942 * This function sends a cancel all to a device to clear the
5943 * queue. If we are running TCQ on the device, QERR is set to 1,
5944 * which means all outstanding ops have been dropped on the floor.
5945 * Cancel all will return them to us.
5946 *
5947 * Return value:
5948 * nothing
5949 **/
ipr_erp_cancel_all(struct ipr_cmnd * ipr_cmd)5950 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5951 {
5952 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5953 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5954 struct ipr_cmd_pkt *cmd_pkt;
5955
5956 res->in_erp = 1;
5957
5958 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5959
5960 if (!scsi_cmd->device->simple_tags) {
5961 ipr_erp_request_sense(ipr_cmd);
5962 return;
5963 }
5964
5965 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5966 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5967 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5968
5969 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5970 IPR_CANCEL_ALL_TIMEOUT);
5971 }
5972
5973 /**
5974 * ipr_dump_ioasa - Dump contents of IOASA
5975 * @ioa_cfg: ioa config struct
5976 * @ipr_cmd: ipr command struct
5977 * @res: resource entry struct
5978 *
5979 * This function is invoked by the interrupt handler when ops
5980 * fail. It will log the IOASA if appropriate. Only called
5981 * for GPDD ops.
5982 *
5983 * Return value:
5984 * none
5985 **/
ipr_dump_ioasa(struct ipr_ioa_cfg * ioa_cfg,struct ipr_cmnd * ipr_cmd,struct ipr_resource_entry * res)5986 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5987 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5988 {
5989 int i;
5990 u16 data_len;
5991 u32 ioasc, fd_ioasc;
5992 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5993 __be32 *ioasa_data = (__be32 *)ioasa;
5994 int error_index;
5995
5996 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5997 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5998
5999 if (0 == ioasc)
6000 return;
6001
6002 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
6003 return;
6004
6005 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6006 error_index = ipr_get_error(fd_ioasc);
6007 else
6008 error_index = ipr_get_error(ioasc);
6009
6010 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6011 /* Don't log an error if the IOA already logged one */
6012 if (ioasa->hdr.ilid != 0)
6013 return;
6014
6015 if (!ipr_is_gscsi(res))
6016 return;
6017
6018 if (ipr_error_table[error_index].log_ioasa == 0)
6019 return;
6020 }
6021
6022 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6023
6024 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6025 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6026 data_len = sizeof(struct ipr_ioasa64);
6027 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6028 data_len = sizeof(struct ipr_ioasa);
6029
6030 ipr_err("IOASA Dump:\n");
6031
6032 for (i = 0; i < data_len / 4; i += 4) {
6033 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6034 be32_to_cpu(ioasa_data[i]),
6035 be32_to_cpu(ioasa_data[i+1]),
6036 be32_to_cpu(ioasa_data[i+2]),
6037 be32_to_cpu(ioasa_data[i+3]));
6038 }
6039 }
6040
6041 /**
6042 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6043 * @ioasa: IOASA
6044 * @sense_buf: sense data buffer
6045 *
6046 * Return value:
6047 * none
6048 **/
ipr_gen_sense(struct ipr_cmnd * ipr_cmd)6049 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6050 {
6051 u32 failing_lba;
6052 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6053 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6054 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6055 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6056
6057 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6058
6059 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6060 return;
6061
6062 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6063
6064 if (ipr_is_vset_device(res) &&
6065 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6066 ioasa->u.vset.failing_lba_hi != 0) {
6067 sense_buf[0] = 0x72;
6068 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6069 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6070 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6071
6072 sense_buf[7] = 12;
6073 sense_buf[8] = 0;
6074 sense_buf[9] = 0x0A;
6075 sense_buf[10] = 0x80;
6076
6077 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6078
6079 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6080 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6081 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6082 sense_buf[15] = failing_lba & 0x000000ff;
6083
6084 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6085
6086 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6087 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6088 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6089 sense_buf[19] = failing_lba & 0x000000ff;
6090 } else {
6091 sense_buf[0] = 0x70;
6092 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6093 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6094 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6095
6096 /* Illegal request */
6097 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6098 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6099 sense_buf[7] = 10; /* additional length */
6100
6101 /* IOARCB was in error */
6102 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6103 sense_buf[15] = 0xC0;
6104 else /* Parameter data was invalid */
6105 sense_buf[15] = 0x80;
6106
6107 sense_buf[16] =
6108 ((IPR_FIELD_POINTER_MASK &
6109 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6110 sense_buf[17] =
6111 (IPR_FIELD_POINTER_MASK &
6112 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6113 } else {
6114 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6115 if (ipr_is_vset_device(res))
6116 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6117 else
6118 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6119
6120 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6121 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6122 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6123 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6124 sense_buf[6] = failing_lba & 0x000000ff;
6125 }
6126
6127 sense_buf[7] = 6; /* additional length */
6128 }
6129 }
6130 }
6131
6132 /**
6133 * ipr_get_autosense - Copy autosense data to sense buffer
6134 * @ipr_cmd: ipr command struct
6135 *
6136 * This function copies the autosense buffer to the buffer
6137 * in the scsi_cmd, if there is autosense available.
6138 *
6139 * Return value:
6140 * 1 if autosense was available / 0 if not
6141 **/
ipr_get_autosense(struct ipr_cmnd * ipr_cmd)6142 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6143 {
6144 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6145 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6146
6147 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6148 return 0;
6149
6150 if (ipr_cmd->ioa_cfg->sis64)
6151 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6152 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6153 SCSI_SENSE_BUFFERSIZE));
6154 else
6155 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6156 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6157 SCSI_SENSE_BUFFERSIZE));
6158 return 1;
6159 }
6160
6161 /**
6162 * ipr_erp_start - Process an error response for a SCSI op
6163 * @ioa_cfg: ioa config struct
6164 * @ipr_cmd: ipr command struct
6165 *
6166 * This function determines whether or not to initiate ERP
6167 * on the affected device.
6168 *
6169 * Return value:
6170 * nothing
6171 **/
ipr_erp_start(struct ipr_ioa_cfg * ioa_cfg,struct ipr_cmnd * ipr_cmd)6172 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6173 struct ipr_cmnd *ipr_cmd)
6174 {
6175 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6176 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6177 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6178 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6179
6180 if (!res) {
6181 ipr_scsi_eh_done(ipr_cmd);
6182 return;
6183 }
6184
6185 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6186 ipr_gen_sense(ipr_cmd);
6187
6188 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6189
6190 switch (masked_ioasc) {
6191 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6192 if (ipr_is_naca_model(res))
6193 scsi_cmd->result |= (DID_ABORT << 16);
6194 else
6195 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6196 break;
6197 case IPR_IOASC_IR_RESOURCE_HANDLE:
6198 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6199 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6200 break;
6201 case IPR_IOASC_HW_SEL_TIMEOUT:
6202 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6203 if (!ipr_is_naca_model(res))
6204 res->needs_sync_complete = 1;
6205 break;
6206 case IPR_IOASC_SYNC_REQUIRED:
6207 if (!res->in_erp)
6208 res->needs_sync_complete = 1;
6209 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6210 break;
6211 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6212 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6213 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6214 break;
6215 case IPR_IOASC_BUS_WAS_RESET:
6216 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6217 /*
6218 * Report the bus reset and ask for a retry. The device
6219 * will give CC/UA the next command.
6220 */
6221 if (!res->resetting_device)
6222 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6223 scsi_cmd->result |= (DID_ERROR << 16);
6224 if (!ipr_is_naca_model(res))
6225 res->needs_sync_complete = 1;
6226 break;
6227 case IPR_IOASC_HW_DEV_BUS_STATUS:
6228 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6229 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6230 if (!ipr_get_autosense(ipr_cmd)) {
6231 if (!ipr_is_naca_model(res)) {
6232 ipr_erp_cancel_all(ipr_cmd);
6233 return;
6234 }
6235 }
6236 }
6237 if (!ipr_is_naca_model(res))
6238 res->needs_sync_complete = 1;
6239 break;
6240 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6241 break;
6242 case IPR_IOASC_IR_NON_OPTIMIZED:
6243 if (res->raw_mode) {
6244 res->raw_mode = 0;
6245 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6246 } else
6247 scsi_cmd->result |= (DID_ERROR << 16);
6248 break;
6249 default:
6250 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6251 scsi_cmd->result |= (DID_ERROR << 16);
6252 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6253 res->needs_sync_complete = 1;
6254 break;
6255 }
6256
6257 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6258 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6259 scsi_cmd->scsi_done(scsi_cmd);
6260 }
6261
6262 /**
6263 * ipr_scsi_done - mid-layer done function
6264 * @ipr_cmd: ipr command struct
6265 *
6266 * This function is invoked by the interrupt handler for
6267 * ops generated by the SCSI mid-layer
6268 *
6269 * Return value:
6270 * none
6271 **/
ipr_scsi_done(struct ipr_cmnd * ipr_cmd)6272 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6273 {
6274 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6275 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6276 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6277 unsigned long lock_flags;
6278
6279 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6280
6281 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6282 scsi_dma_unmap(scsi_cmd);
6283
6284 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6285 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6286 scsi_cmd->scsi_done(scsi_cmd);
6287 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6288 } else {
6289 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6290 spin_lock(&ipr_cmd->hrrq->_lock);
6291 ipr_erp_start(ioa_cfg, ipr_cmd);
6292 spin_unlock(&ipr_cmd->hrrq->_lock);
6293 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6294 }
6295 }
6296
6297 /**
6298 * ipr_queuecommand - Queue a mid-layer request
6299 * @shost: scsi host struct
6300 * @scsi_cmd: scsi command struct
6301 *
6302 * This function queues a request generated by the mid-layer.
6303 *
6304 * Return value:
6305 * 0 on success
6306 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6307 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6308 **/
ipr_queuecommand(struct Scsi_Host * shost,struct scsi_cmnd * scsi_cmd)6309 static int ipr_queuecommand(struct Scsi_Host *shost,
6310 struct scsi_cmnd *scsi_cmd)
6311 {
6312 struct ipr_ioa_cfg *ioa_cfg;
6313 struct ipr_resource_entry *res;
6314 struct ipr_ioarcb *ioarcb;
6315 struct ipr_cmnd *ipr_cmd;
6316 unsigned long hrrq_flags, lock_flags;
6317 int rc;
6318 struct ipr_hrr_queue *hrrq;
6319 int hrrq_id;
6320
6321 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6322
6323 scsi_cmd->result = (DID_OK << 16);
6324 res = scsi_cmd->device->hostdata;
6325
6326 if (ipr_is_gata(res) && res->sata_port) {
6327 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6328 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6329 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6330 return rc;
6331 }
6332
6333 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6334 hrrq = &ioa_cfg->hrrq[hrrq_id];
6335
6336 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6337 /*
6338 * We are currently blocking all devices due to a host reset
6339 * We have told the host to stop giving us new requests, but
6340 * ERP ops don't count. FIXME
6341 */
6342 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6343 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6344 return SCSI_MLQUEUE_HOST_BUSY;
6345 }
6346
6347 /*
6348 * FIXME - Create scsi_set_host_offline interface
6349 * and the ioa_is_dead check can be removed
6350 */
6351 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6352 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6353 goto err_nodev;
6354 }
6355
6356 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6357 if (ipr_cmd == NULL) {
6358 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6359 return SCSI_MLQUEUE_HOST_BUSY;
6360 }
6361 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6362
6363 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6364 ioarcb = &ipr_cmd->ioarcb;
6365
6366 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6367 ipr_cmd->scsi_cmd = scsi_cmd;
6368 ipr_cmd->done = ipr_scsi_eh_done;
6369
6370 if (ipr_is_gscsi(res)) {
6371 if (scsi_cmd->underflow == 0)
6372 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6373
6374 if (res->reset_occurred) {
6375 res->reset_occurred = 0;
6376 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6377 }
6378 }
6379
6380 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6381 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6382
6383 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6384 if (scsi_cmd->flags & SCMD_TAGGED)
6385 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6386 else
6387 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6388 }
6389
6390 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6391 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6392 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6393 }
6394 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6395 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6396
6397 if (scsi_cmd->underflow == 0)
6398 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6399 }
6400
6401 if (ioa_cfg->sis64)
6402 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6403 else
6404 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6405
6406 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6407 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6408 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6409 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6410 if (!rc)
6411 scsi_dma_unmap(scsi_cmd);
6412 return SCSI_MLQUEUE_HOST_BUSY;
6413 }
6414
6415 if (unlikely(hrrq->ioa_is_dead)) {
6416 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6417 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6418 scsi_dma_unmap(scsi_cmd);
6419 goto err_nodev;
6420 }
6421
6422 ioarcb->res_handle = res->res_handle;
6423 if (res->needs_sync_complete) {
6424 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6425 res->needs_sync_complete = 0;
6426 }
6427 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6428 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6429 ipr_send_command(ipr_cmd);
6430 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6431 return 0;
6432
6433 err_nodev:
6434 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6435 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6436 scsi_cmd->result = (DID_NO_CONNECT << 16);
6437 scsi_cmd->scsi_done(scsi_cmd);
6438 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6439 return 0;
6440 }
6441
6442 /**
6443 * ipr_ioctl - IOCTL handler
6444 * @sdev: scsi device struct
6445 * @cmd: IOCTL cmd
6446 * @arg: IOCTL arg
6447 *
6448 * Return value:
6449 * 0 on success / other on failure
6450 **/
ipr_ioctl(struct scsi_device * sdev,int cmd,void __user * arg)6451 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6452 {
6453 struct ipr_resource_entry *res;
6454
6455 res = (struct ipr_resource_entry *)sdev->hostdata;
6456 if (res && ipr_is_gata(res)) {
6457 if (cmd == HDIO_GET_IDENTITY)
6458 return -ENOTTY;
6459 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6460 }
6461
6462 return -EINVAL;
6463 }
6464
6465 /**
6466 * ipr_info - Get information about the card/driver
6467 * @scsi_host: scsi host struct
6468 *
6469 * Return value:
6470 * pointer to buffer with description string
6471 **/
ipr_ioa_info(struct Scsi_Host * host)6472 static const char *ipr_ioa_info(struct Scsi_Host *host)
6473 {
6474 static char buffer[512];
6475 struct ipr_ioa_cfg *ioa_cfg;
6476 unsigned long lock_flags = 0;
6477
6478 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6479
6480 spin_lock_irqsave(host->host_lock, lock_flags);
6481 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6482 spin_unlock_irqrestore(host->host_lock, lock_flags);
6483
6484 return buffer;
6485 }
6486
6487 static struct scsi_host_template driver_template = {
6488 .module = THIS_MODULE,
6489 .name = "IPR",
6490 .info = ipr_ioa_info,
6491 .ioctl = ipr_ioctl,
6492 .queuecommand = ipr_queuecommand,
6493 .eh_abort_handler = ipr_eh_abort,
6494 .eh_device_reset_handler = ipr_eh_dev_reset,
6495 .eh_host_reset_handler = ipr_eh_host_reset,
6496 .slave_alloc = ipr_slave_alloc,
6497 .slave_configure = ipr_slave_configure,
6498 .slave_destroy = ipr_slave_destroy,
6499 .scan_finished = ipr_scan_finished,
6500 .target_alloc = ipr_target_alloc,
6501 .target_destroy = ipr_target_destroy,
6502 .change_queue_depth = ipr_change_queue_depth,
6503 .bios_param = ipr_biosparam,
6504 .can_queue = IPR_MAX_COMMANDS,
6505 .this_id = -1,
6506 .sg_tablesize = IPR_MAX_SGLIST,
6507 .max_sectors = IPR_IOA_MAX_SECTORS,
6508 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6509 .use_clustering = ENABLE_CLUSTERING,
6510 .shost_attrs = ipr_ioa_attrs,
6511 .sdev_attrs = ipr_dev_attrs,
6512 .proc_name = IPR_NAME,
6513 };
6514
6515 /**
6516 * ipr_ata_phy_reset - libata phy_reset handler
6517 * @ap: ata port to reset
6518 *
6519 **/
ipr_ata_phy_reset(struct ata_port * ap)6520 static void ipr_ata_phy_reset(struct ata_port *ap)
6521 {
6522 unsigned long flags;
6523 struct ipr_sata_port *sata_port = ap->private_data;
6524 struct ipr_resource_entry *res = sata_port->res;
6525 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6526 int rc;
6527
6528 ENTER;
6529 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6530 while (ioa_cfg->in_reset_reload) {
6531 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6532 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6533 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6534 }
6535
6536 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6537 goto out_unlock;
6538
6539 rc = ipr_device_reset(ioa_cfg, res);
6540
6541 if (rc) {
6542 ap->link.device[0].class = ATA_DEV_NONE;
6543 goto out_unlock;
6544 }
6545
6546 ap->link.device[0].class = res->ata_class;
6547 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6548 ap->link.device[0].class = ATA_DEV_NONE;
6549
6550 out_unlock:
6551 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6552 LEAVE;
6553 }
6554
6555 /**
6556 * ipr_ata_post_internal - Cleanup after an internal command
6557 * @qc: ATA queued command
6558 *
6559 * Return value:
6560 * none
6561 **/
ipr_ata_post_internal(struct ata_queued_cmd * qc)6562 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6563 {
6564 struct ipr_sata_port *sata_port = qc->ap->private_data;
6565 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6566 struct ipr_cmnd *ipr_cmd;
6567 struct ipr_hrr_queue *hrrq;
6568 unsigned long flags;
6569
6570 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6571 while (ioa_cfg->in_reset_reload) {
6572 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6573 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6574 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6575 }
6576
6577 for_each_hrrq(hrrq, ioa_cfg) {
6578 spin_lock(&hrrq->_lock);
6579 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6580 if (ipr_cmd->qc == qc) {
6581 ipr_device_reset(ioa_cfg, sata_port->res);
6582 break;
6583 }
6584 }
6585 spin_unlock(&hrrq->_lock);
6586 }
6587 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6588 }
6589
6590 /**
6591 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6592 * @regs: destination
6593 * @tf: source ATA taskfile
6594 *
6595 * Return value:
6596 * none
6597 **/
ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs * regs,struct ata_taskfile * tf)6598 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6599 struct ata_taskfile *tf)
6600 {
6601 regs->feature = tf->feature;
6602 regs->nsect = tf->nsect;
6603 regs->lbal = tf->lbal;
6604 regs->lbam = tf->lbam;
6605 regs->lbah = tf->lbah;
6606 regs->device = tf->device;
6607 regs->command = tf->command;
6608 regs->hob_feature = tf->hob_feature;
6609 regs->hob_nsect = tf->hob_nsect;
6610 regs->hob_lbal = tf->hob_lbal;
6611 regs->hob_lbam = tf->hob_lbam;
6612 regs->hob_lbah = tf->hob_lbah;
6613 regs->ctl = tf->ctl;
6614 }
6615
6616 /**
6617 * ipr_sata_done - done function for SATA commands
6618 * @ipr_cmd: ipr command struct
6619 *
6620 * This function is invoked by the interrupt handler for
6621 * ops generated by the SCSI mid-layer to SATA devices
6622 *
6623 * Return value:
6624 * none
6625 **/
ipr_sata_done(struct ipr_cmnd * ipr_cmd)6626 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6627 {
6628 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6629 struct ata_queued_cmd *qc = ipr_cmd->qc;
6630 struct ipr_sata_port *sata_port = qc->ap->private_data;
6631 struct ipr_resource_entry *res = sata_port->res;
6632 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6633
6634 spin_lock(&ipr_cmd->hrrq->_lock);
6635 if (ipr_cmd->ioa_cfg->sis64)
6636 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6637 sizeof(struct ipr_ioasa_gata));
6638 else
6639 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6640 sizeof(struct ipr_ioasa_gata));
6641 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6642
6643 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6644 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6645
6646 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6647 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6648 else
6649 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6650 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6651 spin_unlock(&ipr_cmd->hrrq->_lock);
6652 ata_qc_complete(qc);
6653 }
6654
6655 /**
6656 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6657 * @ipr_cmd: ipr command struct
6658 * @qc: ATA queued command
6659 *
6660 **/
ipr_build_ata_ioadl64(struct ipr_cmnd * ipr_cmd,struct ata_queued_cmd * qc)6661 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6662 struct ata_queued_cmd *qc)
6663 {
6664 u32 ioadl_flags = 0;
6665 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6666 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6667 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6668 int len = qc->nbytes;
6669 struct scatterlist *sg;
6670 unsigned int si;
6671 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6672
6673 if (len == 0)
6674 return;
6675
6676 if (qc->dma_dir == DMA_TO_DEVICE) {
6677 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6678 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6679 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6680 ioadl_flags = IPR_IOADL_FLAGS_READ;
6681
6682 ioarcb->data_transfer_length = cpu_to_be32(len);
6683 ioarcb->ioadl_len =
6684 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6685 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6686 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6687
6688 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6689 ioadl64->flags = cpu_to_be32(ioadl_flags);
6690 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6691 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6692
6693 last_ioadl64 = ioadl64;
6694 ioadl64++;
6695 }
6696
6697 if (likely(last_ioadl64))
6698 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6699 }
6700
6701 /**
6702 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6703 * @ipr_cmd: ipr command struct
6704 * @qc: ATA queued command
6705 *
6706 **/
ipr_build_ata_ioadl(struct ipr_cmnd * ipr_cmd,struct ata_queued_cmd * qc)6707 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6708 struct ata_queued_cmd *qc)
6709 {
6710 u32 ioadl_flags = 0;
6711 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6712 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6713 struct ipr_ioadl_desc *last_ioadl = NULL;
6714 int len = qc->nbytes;
6715 struct scatterlist *sg;
6716 unsigned int si;
6717
6718 if (len == 0)
6719 return;
6720
6721 if (qc->dma_dir == DMA_TO_DEVICE) {
6722 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6723 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6724 ioarcb->data_transfer_length = cpu_to_be32(len);
6725 ioarcb->ioadl_len =
6726 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6727 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6728 ioadl_flags = IPR_IOADL_FLAGS_READ;
6729 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6730 ioarcb->read_ioadl_len =
6731 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6732 }
6733
6734 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6735 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6736 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6737
6738 last_ioadl = ioadl;
6739 ioadl++;
6740 }
6741
6742 if (likely(last_ioadl))
6743 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6744 }
6745
6746 /**
6747 * ipr_qc_defer - Get a free ipr_cmd
6748 * @qc: queued command
6749 *
6750 * Return value:
6751 * 0 if success
6752 **/
ipr_qc_defer(struct ata_queued_cmd * qc)6753 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6754 {
6755 struct ata_port *ap = qc->ap;
6756 struct ipr_sata_port *sata_port = ap->private_data;
6757 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6758 struct ipr_cmnd *ipr_cmd;
6759 struct ipr_hrr_queue *hrrq;
6760 int hrrq_id;
6761
6762 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6763 hrrq = &ioa_cfg->hrrq[hrrq_id];
6764
6765 qc->lldd_task = NULL;
6766 spin_lock(&hrrq->_lock);
6767 if (unlikely(hrrq->ioa_is_dead)) {
6768 spin_unlock(&hrrq->_lock);
6769 return 0;
6770 }
6771
6772 if (unlikely(!hrrq->allow_cmds)) {
6773 spin_unlock(&hrrq->_lock);
6774 return ATA_DEFER_LINK;
6775 }
6776
6777 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6778 if (ipr_cmd == NULL) {
6779 spin_unlock(&hrrq->_lock);
6780 return ATA_DEFER_LINK;
6781 }
6782
6783 qc->lldd_task = ipr_cmd;
6784 spin_unlock(&hrrq->_lock);
6785 return 0;
6786 }
6787
6788 /**
6789 * ipr_qc_issue - Issue a SATA qc to a device
6790 * @qc: queued command
6791 *
6792 * Return value:
6793 * 0 if success
6794 **/
ipr_qc_issue(struct ata_queued_cmd * qc)6795 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6796 {
6797 struct ata_port *ap = qc->ap;
6798 struct ipr_sata_port *sata_port = ap->private_data;
6799 struct ipr_resource_entry *res = sata_port->res;
6800 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6801 struct ipr_cmnd *ipr_cmd;
6802 struct ipr_ioarcb *ioarcb;
6803 struct ipr_ioarcb_ata_regs *regs;
6804
6805 if (qc->lldd_task == NULL)
6806 ipr_qc_defer(qc);
6807
6808 ipr_cmd = qc->lldd_task;
6809 if (ipr_cmd == NULL)
6810 return AC_ERR_SYSTEM;
6811
6812 qc->lldd_task = NULL;
6813 spin_lock(&ipr_cmd->hrrq->_lock);
6814 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6815 ipr_cmd->hrrq->ioa_is_dead)) {
6816 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6817 spin_unlock(&ipr_cmd->hrrq->_lock);
6818 return AC_ERR_SYSTEM;
6819 }
6820
6821 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6822 ioarcb = &ipr_cmd->ioarcb;
6823
6824 if (ioa_cfg->sis64) {
6825 regs = &ipr_cmd->i.ata_ioadl.regs;
6826 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6827 } else
6828 regs = &ioarcb->u.add_data.u.regs;
6829
6830 memset(regs, 0, sizeof(*regs));
6831 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6832
6833 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6834 ipr_cmd->qc = qc;
6835 ipr_cmd->done = ipr_sata_done;
6836 ipr_cmd->ioarcb.res_handle = res->res_handle;
6837 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6838 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6839 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6840 ipr_cmd->dma_use_sg = qc->n_elem;
6841
6842 if (ioa_cfg->sis64)
6843 ipr_build_ata_ioadl64(ipr_cmd, qc);
6844 else
6845 ipr_build_ata_ioadl(ipr_cmd, qc);
6846
6847 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6848 ipr_copy_sata_tf(regs, &qc->tf);
6849 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6850 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6851
6852 switch (qc->tf.protocol) {
6853 case ATA_PROT_NODATA:
6854 case ATA_PROT_PIO:
6855 break;
6856
6857 case ATA_PROT_DMA:
6858 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6859 break;
6860
6861 case ATAPI_PROT_PIO:
6862 case ATAPI_PROT_NODATA:
6863 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6864 break;
6865
6866 case ATAPI_PROT_DMA:
6867 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6868 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6869 break;
6870
6871 default:
6872 WARN_ON(1);
6873 spin_unlock(&ipr_cmd->hrrq->_lock);
6874 return AC_ERR_INVALID;
6875 }
6876
6877 ipr_send_command(ipr_cmd);
6878 spin_unlock(&ipr_cmd->hrrq->_lock);
6879
6880 return 0;
6881 }
6882
6883 /**
6884 * ipr_qc_fill_rtf - Read result TF
6885 * @qc: ATA queued command
6886 *
6887 * Return value:
6888 * true
6889 **/
ipr_qc_fill_rtf(struct ata_queued_cmd * qc)6890 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6891 {
6892 struct ipr_sata_port *sata_port = qc->ap->private_data;
6893 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6894 struct ata_taskfile *tf = &qc->result_tf;
6895
6896 tf->feature = g->error;
6897 tf->nsect = g->nsect;
6898 tf->lbal = g->lbal;
6899 tf->lbam = g->lbam;
6900 tf->lbah = g->lbah;
6901 tf->device = g->device;
6902 tf->command = g->status;
6903 tf->hob_nsect = g->hob_nsect;
6904 tf->hob_lbal = g->hob_lbal;
6905 tf->hob_lbam = g->hob_lbam;
6906 tf->hob_lbah = g->hob_lbah;
6907
6908 return true;
6909 }
6910
6911 static struct ata_port_operations ipr_sata_ops = {
6912 .phy_reset = ipr_ata_phy_reset,
6913 .hardreset = ipr_sata_reset,
6914 .post_internal_cmd = ipr_ata_post_internal,
6915 .qc_prep = ata_noop_qc_prep,
6916 .qc_defer = ipr_qc_defer,
6917 .qc_issue = ipr_qc_issue,
6918 .qc_fill_rtf = ipr_qc_fill_rtf,
6919 .port_start = ata_sas_port_start,
6920 .port_stop = ata_sas_port_stop
6921 };
6922
6923 static struct ata_port_info sata_port_info = {
6924 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
6925 ATA_FLAG_SAS_HOST,
6926 .pio_mask = ATA_PIO4_ONLY,
6927 .mwdma_mask = ATA_MWDMA2,
6928 .udma_mask = ATA_UDMA6,
6929 .port_ops = &ipr_sata_ops
6930 };
6931
6932 #ifdef CONFIG_PPC_PSERIES
6933 static const u16 ipr_blocked_processors[] = {
6934 PVR_NORTHSTAR,
6935 PVR_PULSAR,
6936 PVR_POWER4,
6937 PVR_ICESTAR,
6938 PVR_SSTAR,
6939 PVR_POWER4p,
6940 PVR_630,
6941 PVR_630p
6942 };
6943
6944 /**
6945 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6946 * @ioa_cfg: ioa cfg struct
6947 *
6948 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6949 * certain pSeries hardware. This function determines if the given
6950 * adapter is in one of these confgurations or not.
6951 *
6952 * Return value:
6953 * 1 if adapter is not supported / 0 if adapter is supported
6954 **/
ipr_invalid_adapter(struct ipr_ioa_cfg * ioa_cfg)6955 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6956 {
6957 int i;
6958
6959 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6960 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6961 if (pvr_version_is(ipr_blocked_processors[i]))
6962 return 1;
6963 }
6964 }
6965 return 0;
6966 }
6967 #else
6968 #define ipr_invalid_adapter(ioa_cfg) 0
6969 #endif
6970
6971 /**
6972 * ipr_ioa_bringdown_done - IOA bring down completion.
6973 * @ipr_cmd: ipr command struct
6974 *
6975 * This function processes the completion of an adapter bring down.
6976 * It wakes any reset sleepers.
6977 *
6978 * Return value:
6979 * IPR_RC_JOB_RETURN
6980 **/
ipr_ioa_bringdown_done(struct ipr_cmnd * ipr_cmd)6981 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6982 {
6983 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6984 int i;
6985
6986 ENTER;
6987 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6988 ipr_trace;
6989 spin_unlock_irq(ioa_cfg->host->host_lock);
6990 scsi_unblock_requests(ioa_cfg->host);
6991 spin_lock_irq(ioa_cfg->host->host_lock);
6992 }
6993
6994 ioa_cfg->in_reset_reload = 0;
6995 ioa_cfg->reset_retries = 0;
6996 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
6997 spin_lock(&ioa_cfg->hrrq[i]._lock);
6998 ioa_cfg->hrrq[i].ioa_is_dead = 1;
6999 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7000 }
7001 wmb();
7002
7003 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7004 wake_up_all(&ioa_cfg->reset_wait_q);
7005 LEAVE;
7006
7007 return IPR_RC_JOB_RETURN;
7008 }
7009
7010 /**
7011 * ipr_ioa_reset_done - IOA reset completion.
7012 * @ipr_cmd: ipr command struct
7013 *
7014 * This function processes the completion of an adapter reset.
7015 * It schedules any necessary mid-layer add/removes and
7016 * wakes any reset sleepers.
7017 *
7018 * Return value:
7019 * IPR_RC_JOB_RETURN
7020 **/
ipr_ioa_reset_done(struct ipr_cmnd * ipr_cmd)7021 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7022 {
7023 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7024 struct ipr_resource_entry *res;
7025 struct ipr_hostrcb *hostrcb, *temp;
7026 int i = 0, j;
7027
7028 ENTER;
7029 ioa_cfg->in_reset_reload = 0;
7030 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7031 spin_lock(&ioa_cfg->hrrq[j]._lock);
7032 ioa_cfg->hrrq[j].allow_cmds = 1;
7033 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7034 }
7035 wmb();
7036 ioa_cfg->reset_cmd = NULL;
7037 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7038
7039 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7040 if (res->add_to_ml || res->del_from_ml) {
7041 ipr_trace;
7042 break;
7043 }
7044 }
7045 schedule_work(&ioa_cfg->work_q);
7046
7047 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
7048 list_del(&hostrcb->queue);
7049 if (i++ < IPR_NUM_LOG_HCAMS)
7050 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
7051 else
7052 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
7053 }
7054
7055 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7056 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7057
7058 ioa_cfg->reset_retries = 0;
7059 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7060 wake_up_all(&ioa_cfg->reset_wait_q);
7061
7062 spin_unlock(ioa_cfg->host->host_lock);
7063 scsi_unblock_requests(ioa_cfg->host);
7064 spin_lock(ioa_cfg->host->host_lock);
7065
7066 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
7067 scsi_block_requests(ioa_cfg->host);
7068
7069 schedule_work(&ioa_cfg->work_q);
7070 LEAVE;
7071 return IPR_RC_JOB_RETURN;
7072 }
7073
7074 /**
7075 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7076 * @supported_dev: supported device struct
7077 * @vpids: vendor product id struct
7078 *
7079 * Return value:
7080 * none
7081 **/
ipr_set_sup_dev_dflt(struct ipr_supported_device * supported_dev,struct ipr_std_inq_vpids * vpids)7082 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7083 struct ipr_std_inq_vpids *vpids)
7084 {
7085 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7086 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7087 supported_dev->num_records = 1;
7088 supported_dev->data_length =
7089 cpu_to_be16(sizeof(struct ipr_supported_device));
7090 supported_dev->reserved = 0;
7091 }
7092
7093 /**
7094 * ipr_set_supported_devs - Send Set Supported Devices for a device
7095 * @ipr_cmd: ipr command struct
7096 *
7097 * This function sends a Set Supported Devices to the adapter
7098 *
7099 * Return value:
7100 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7101 **/
ipr_set_supported_devs(struct ipr_cmnd * ipr_cmd)7102 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7103 {
7104 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7105 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7106 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7107 struct ipr_resource_entry *res = ipr_cmd->u.res;
7108
7109 ipr_cmd->job_step = ipr_ioa_reset_done;
7110
7111 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7112 if (!ipr_is_scsi_disk(res))
7113 continue;
7114
7115 ipr_cmd->u.res = res;
7116 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7117
7118 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7119 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7120 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7121
7122 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7123 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7124 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7125 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7126
7127 ipr_init_ioadl(ipr_cmd,
7128 ioa_cfg->vpd_cbs_dma +
7129 offsetof(struct ipr_misc_cbs, supp_dev),
7130 sizeof(struct ipr_supported_device),
7131 IPR_IOADL_FLAGS_WRITE_LAST);
7132
7133 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7134 IPR_SET_SUP_DEVICE_TIMEOUT);
7135
7136 if (!ioa_cfg->sis64)
7137 ipr_cmd->job_step = ipr_set_supported_devs;
7138 LEAVE;
7139 return IPR_RC_JOB_RETURN;
7140 }
7141
7142 LEAVE;
7143 return IPR_RC_JOB_CONTINUE;
7144 }
7145
7146 /**
7147 * ipr_get_mode_page - Locate specified mode page
7148 * @mode_pages: mode page buffer
7149 * @page_code: page code to find
7150 * @len: minimum required length for mode page
7151 *
7152 * Return value:
7153 * pointer to mode page / NULL on failure
7154 **/
ipr_get_mode_page(struct ipr_mode_pages * mode_pages,u32 page_code,u32 len)7155 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7156 u32 page_code, u32 len)
7157 {
7158 struct ipr_mode_page_hdr *mode_hdr;
7159 u32 page_length;
7160 u32 length;
7161
7162 if (!mode_pages || (mode_pages->hdr.length == 0))
7163 return NULL;
7164
7165 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7166 mode_hdr = (struct ipr_mode_page_hdr *)
7167 (mode_pages->data + mode_pages->hdr.block_desc_len);
7168
7169 while (length) {
7170 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7171 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7172 return mode_hdr;
7173 break;
7174 } else {
7175 page_length = (sizeof(struct ipr_mode_page_hdr) +
7176 mode_hdr->page_length);
7177 length -= page_length;
7178 mode_hdr = (struct ipr_mode_page_hdr *)
7179 ((unsigned long)mode_hdr + page_length);
7180 }
7181 }
7182 return NULL;
7183 }
7184
7185 /**
7186 * ipr_check_term_power - Check for term power errors
7187 * @ioa_cfg: ioa config struct
7188 * @mode_pages: IOAFP mode pages buffer
7189 *
7190 * Check the IOAFP's mode page 28 for term power errors
7191 *
7192 * Return value:
7193 * nothing
7194 **/
ipr_check_term_power(struct ipr_ioa_cfg * ioa_cfg,struct ipr_mode_pages * mode_pages)7195 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7196 struct ipr_mode_pages *mode_pages)
7197 {
7198 int i;
7199 int entry_length;
7200 struct ipr_dev_bus_entry *bus;
7201 struct ipr_mode_page28 *mode_page;
7202
7203 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7204 sizeof(struct ipr_mode_page28));
7205
7206 entry_length = mode_page->entry_length;
7207
7208 bus = mode_page->bus;
7209
7210 for (i = 0; i < mode_page->num_entries; i++) {
7211 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7212 dev_err(&ioa_cfg->pdev->dev,
7213 "Term power is absent on scsi bus %d\n",
7214 bus->res_addr.bus);
7215 }
7216
7217 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7218 }
7219 }
7220
7221 /**
7222 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7223 * @ioa_cfg: ioa config struct
7224 *
7225 * Looks through the config table checking for SES devices. If
7226 * the SES device is in the SES table indicating a maximum SCSI
7227 * bus speed, the speed is limited for the bus.
7228 *
7229 * Return value:
7230 * none
7231 **/
ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg * ioa_cfg)7232 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7233 {
7234 u32 max_xfer_rate;
7235 int i;
7236
7237 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7238 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7239 ioa_cfg->bus_attr[i].bus_width);
7240
7241 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7242 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7243 }
7244 }
7245
7246 /**
7247 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7248 * @ioa_cfg: ioa config struct
7249 * @mode_pages: mode page 28 buffer
7250 *
7251 * Updates mode page 28 based on driver configuration
7252 *
7253 * Return value:
7254 * none
7255 **/
ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg * ioa_cfg,struct ipr_mode_pages * mode_pages)7256 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7257 struct ipr_mode_pages *mode_pages)
7258 {
7259 int i, entry_length;
7260 struct ipr_dev_bus_entry *bus;
7261 struct ipr_bus_attributes *bus_attr;
7262 struct ipr_mode_page28 *mode_page;
7263
7264 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7265 sizeof(struct ipr_mode_page28));
7266
7267 entry_length = mode_page->entry_length;
7268
7269 /* Loop for each device bus entry */
7270 for (i = 0, bus = mode_page->bus;
7271 i < mode_page->num_entries;
7272 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7273 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7274 dev_err(&ioa_cfg->pdev->dev,
7275 "Invalid resource address reported: 0x%08X\n",
7276 IPR_GET_PHYS_LOC(bus->res_addr));
7277 continue;
7278 }
7279
7280 bus_attr = &ioa_cfg->bus_attr[i];
7281 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7282 bus->bus_width = bus_attr->bus_width;
7283 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7284 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7285 if (bus_attr->qas_enabled)
7286 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7287 else
7288 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7289 }
7290 }
7291
7292 /**
7293 * ipr_build_mode_select - Build a mode select command
7294 * @ipr_cmd: ipr command struct
7295 * @res_handle: resource handle to send command to
7296 * @parm: Byte 2 of Mode Sense command
7297 * @dma_addr: DMA buffer address
7298 * @xfer_len: data transfer length
7299 *
7300 * Return value:
7301 * none
7302 **/
ipr_build_mode_select(struct ipr_cmnd * ipr_cmd,__be32 res_handle,u8 parm,dma_addr_t dma_addr,u8 xfer_len)7303 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7304 __be32 res_handle, u8 parm,
7305 dma_addr_t dma_addr, u8 xfer_len)
7306 {
7307 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7308
7309 ioarcb->res_handle = res_handle;
7310 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7311 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7312 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7313 ioarcb->cmd_pkt.cdb[1] = parm;
7314 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7315
7316 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7317 }
7318
7319 /**
7320 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7321 * @ipr_cmd: ipr command struct
7322 *
7323 * This function sets up the SCSI bus attributes and sends
7324 * a Mode Select for Page 28 to activate them.
7325 *
7326 * Return value:
7327 * IPR_RC_JOB_RETURN
7328 **/
ipr_ioafp_mode_select_page28(struct ipr_cmnd * ipr_cmd)7329 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7330 {
7331 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7332 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7333 int length;
7334
7335 ENTER;
7336 ipr_scsi_bus_speed_limit(ioa_cfg);
7337 ipr_check_term_power(ioa_cfg, mode_pages);
7338 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7339 length = mode_pages->hdr.length + 1;
7340 mode_pages->hdr.length = 0;
7341
7342 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7343 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7344 length);
7345
7346 ipr_cmd->job_step = ipr_set_supported_devs;
7347 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7348 struct ipr_resource_entry, queue);
7349 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7350
7351 LEAVE;
7352 return IPR_RC_JOB_RETURN;
7353 }
7354
7355 /**
7356 * ipr_build_mode_sense - Builds a mode sense command
7357 * @ipr_cmd: ipr command struct
7358 * @res: resource entry struct
7359 * @parm: Byte 2 of mode sense command
7360 * @dma_addr: DMA address of mode sense buffer
7361 * @xfer_len: Size of DMA buffer
7362 *
7363 * Return value:
7364 * none
7365 **/
ipr_build_mode_sense(struct ipr_cmnd * ipr_cmd,__be32 res_handle,u8 parm,dma_addr_t dma_addr,u8 xfer_len)7366 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7367 __be32 res_handle,
7368 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7369 {
7370 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7371
7372 ioarcb->res_handle = res_handle;
7373 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7374 ioarcb->cmd_pkt.cdb[2] = parm;
7375 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7376 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7377
7378 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7379 }
7380
7381 /**
7382 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7383 * @ipr_cmd: ipr command struct
7384 *
7385 * This function handles the failure of an IOA bringup command.
7386 *
7387 * Return value:
7388 * IPR_RC_JOB_RETURN
7389 **/
ipr_reset_cmd_failed(struct ipr_cmnd * ipr_cmd)7390 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7391 {
7392 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7393 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7394
7395 dev_err(&ioa_cfg->pdev->dev,
7396 "0x%02X failed with IOASC: 0x%08X\n",
7397 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7398
7399 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7400 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7401 return IPR_RC_JOB_RETURN;
7402 }
7403
7404 /**
7405 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7406 * @ipr_cmd: ipr command struct
7407 *
7408 * This function handles the failure of a Mode Sense to the IOAFP.
7409 * Some adapters do not handle all mode pages.
7410 *
7411 * Return value:
7412 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7413 **/
ipr_reset_mode_sense_failed(struct ipr_cmnd * ipr_cmd)7414 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7415 {
7416 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7417 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7418
7419 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7420 ipr_cmd->job_step = ipr_set_supported_devs;
7421 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7422 struct ipr_resource_entry, queue);
7423 return IPR_RC_JOB_CONTINUE;
7424 }
7425
7426 return ipr_reset_cmd_failed(ipr_cmd);
7427 }
7428
7429 /**
7430 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7431 * @ipr_cmd: ipr command struct
7432 *
7433 * This function send a Page 28 mode sense to the IOA to
7434 * retrieve SCSI bus attributes.
7435 *
7436 * Return value:
7437 * IPR_RC_JOB_RETURN
7438 **/
ipr_ioafp_mode_sense_page28(struct ipr_cmnd * ipr_cmd)7439 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7440 {
7441 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7442
7443 ENTER;
7444 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7445 0x28, ioa_cfg->vpd_cbs_dma +
7446 offsetof(struct ipr_misc_cbs, mode_pages),
7447 sizeof(struct ipr_mode_pages));
7448
7449 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7450 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7451
7452 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7453
7454 LEAVE;
7455 return IPR_RC_JOB_RETURN;
7456 }
7457
7458 /**
7459 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7460 * @ipr_cmd: ipr command struct
7461 *
7462 * This function enables dual IOA RAID support if possible.
7463 *
7464 * Return value:
7465 * IPR_RC_JOB_RETURN
7466 **/
ipr_ioafp_mode_select_page24(struct ipr_cmnd * ipr_cmd)7467 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7468 {
7469 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7470 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7471 struct ipr_mode_page24 *mode_page;
7472 int length;
7473
7474 ENTER;
7475 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7476 sizeof(struct ipr_mode_page24));
7477
7478 if (mode_page)
7479 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7480
7481 length = mode_pages->hdr.length + 1;
7482 mode_pages->hdr.length = 0;
7483
7484 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7485 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7486 length);
7487
7488 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7489 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7490
7491 LEAVE;
7492 return IPR_RC_JOB_RETURN;
7493 }
7494
7495 /**
7496 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7497 * @ipr_cmd: ipr command struct
7498 *
7499 * This function handles the failure of a Mode Sense to the IOAFP.
7500 * Some adapters do not handle all mode pages.
7501 *
7502 * Return value:
7503 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7504 **/
ipr_reset_mode_sense_page24_failed(struct ipr_cmnd * ipr_cmd)7505 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7506 {
7507 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7508
7509 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7510 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7511 return IPR_RC_JOB_CONTINUE;
7512 }
7513
7514 return ipr_reset_cmd_failed(ipr_cmd);
7515 }
7516
7517 /**
7518 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7519 * @ipr_cmd: ipr command struct
7520 *
7521 * This function send a mode sense to the IOA to retrieve
7522 * the IOA Advanced Function Control mode page.
7523 *
7524 * Return value:
7525 * IPR_RC_JOB_RETURN
7526 **/
ipr_ioafp_mode_sense_page24(struct ipr_cmnd * ipr_cmd)7527 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7528 {
7529 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7530
7531 ENTER;
7532 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7533 0x24, ioa_cfg->vpd_cbs_dma +
7534 offsetof(struct ipr_misc_cbs, mode_pages),
7535 sizeof(struct ipr_mode_pages));
7536
7537 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7538 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7539
7540 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7541
7542 LEAVE;
7543 return IPR_RC_JOB_RETURN;
7544 }
7545
7546 /**
7547 * ipr_init_res_table - Initialize the resource table
7548 * @ipr_cmd: ipr command struct
7549 *
7550 * This function looks through the existing resource table, comparing
7551 * it with the config table. This function will take care of old/new
7552 * devices and schedule adding/removing them from the mid-layer
7553 * as appropriate.
7554 *
7555 * Return value:
7556 * IPR_RC_JOB_CONTINUE
7557 **/
ipr_init_res_table(struct ipr_cmnd * ipr_cmd)7558 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7559 {
7560 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7561 struct ipr_resource_entry *res, *temp;
7562 struct ipr_config_table_entry_wrapper cfgtew;
7563 int entries, found, flag, i;
7564 LIST_HEAD(old_res);
7565
7566 ENTER;
7567 if (ioa_cfg->sis64)
7568 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7569 else
7570 flag = ioa_cfg->u.cfg_table->hdr.flags;
7571
7572 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7573 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7574
7575 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7576 list_move_tail(&res->queue, &old_res);
7577
7578 if (ioa_cfg->sis64)
7579 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7580 else
7581 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7582
7583 for (i = 0; i < entries; i++) {
7584 if (ioa_cfg->sis64)
7585 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7586 else
7587 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7588 found = 0;
7589
7590 list_for_each_entry_safe(res, temp, &old_res, queue) {
7591 if (ipr_is_same_device(res, &cfgtew)) {
7592 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7593 found = 1;
7594 break;
7595 }
7596 }
7597
7598 if (!found) {
7599 if (list_empty(&ioa_cfg->free_res_q)) {
7600 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7601 break;
7602 }
7603
7604 found = 1;
7605 res = list_entry(ioa_cfg->free_res_q.next,
7606 struct ipr_resource_entry, queue);
7607 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7608 ipr_init_res_entry(res, &cfgtew);
7609 res->add_to_ml = 1;
7610 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7611 res->sdev->allow_restart = 1;
7612
7613 if (found)
7614 ipr_update_res_entry(res, &cfgtew);
7615 }
7616
7617 list_for_each_entry_safe(res, temp, &old_res, queue) {
7618 if (res->sdev) {
7619 res->del_from_ml = 1;
7620 res->res_handle = IPR_INVALID_RES_HANDLE;
7621 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7622 }
7623 }
7624
7625 list_for_each_entry_safe(res, temp, &old_res, queue) {
7626 ipr_clear_res_target(res);
7627 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7628 }
7629
7630 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7631 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7632 else
7633 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7634
7635 LEAVE;
7636 return IPR_RC_JOB_CONTINUE;
7637 }
7638
7639 /**
7640 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7641 * @ipr_cmd: ipr command struct
7642 *
7643 * This function sends a Query IOA Configuration command
7644 * to the adapter to retrieve the IOA configuration table.
7645 *
7646 * Return value:
7647 * IPR_RC_JOB_RETURN
7648 **/
ipr_ioafp_query_ioa_cfg(struct ipr_cmnd * ipr_cmd)7649 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7650 {
7651 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7652 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7653 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7654 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7655
7656 ENTER;
7657 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7658 ioa_cfg->dual_raid = 1;
7659 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7660 ucode_vpd->major_release, ucode_vpd->card_type,
7661 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7662 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7663 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7664
7665 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7666 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7667 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7668 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7669
7670 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7671 IPR_IOADL_FLAGS_READ_LAST);
7672
7673 ipr_cmd->job_step = ipr_init_res_table;
7674
7675 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7676
7677 LEAVE;
7678 return IPR_RC_JOB_RETURN;
7679 }
7680
ipr_ioa_service_action_failed(struct ipr_cmnd * ipr_cmd)7681 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7682 {
7683 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7684
7685 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7686 return IPR_RC_JOB_CONTINUE;
7687
7688 return ipr_reset_cmd_failed(ipr_cmd);
7689 }
7690
ipr_build_ioa_service_action(struct ipr_cmnd * ipr_cmd,__be32 res_handle,u8 sa_code)7691 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7692 __be32 res_handle, u8 sa_code)
7693 {
7694 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7695
7696 ioarcb->res_handle = res_handle;
7697 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7698 ioarcb->cmd_pkt.cdb[1] = sa_code;
7699 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7700 }
7701
7702 /**
7703 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7704 * action
7705 *
7706 * Return value:
7707 * none
7708 **/
ipr_ioafp_set_caching_parameters(struct ipr_cmnd * ipr_cmd)7709 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7710 {
7711 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7712 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7713 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7714
7715 ENTER;
7716
7717 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7718
7719 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7720 ipr_build_ioa_service_action(ipr_cmd,
7721 cpu_to_be32(IPR_IOA_RES_HANDLE),
7722 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7723
7724 ioarcb->cmd_pkt.cdb[2] = 0x40;
7725
7726 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7727 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7728 IPR_SET_SUP_DEVICE_TIMEOUT);
7729
7730 LEAVE;
7731 return IPR_RC_JOB_RETURN;
7732 }
7733
7734 LEAVE;
7735 return IPR_RC_JOB_CONTINUE;
7736 }
7737
7738 /**
7739 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7740 * @ipr_cmd: ipr command struct
7741 *
7742 * This utility function sends an inquiry to the adapter.
7743 *
7744 * Return value:
7745 * none
7746 **/
ipr_ioafp_inquiry(struct ipr_cmnd * ipr_cmd,u8 flags,u8 page,dma_addr_t dma_addr,u8 xfer_len)7747 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7748 dma_addr_t dma_addr, u8 xfer_len)
7749 {
7750 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7751
7752 ENTER;
7753 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7754 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7755
7756 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7757 ioarcb->cmd_pkt.cdb[1] = flags;
7758 ioarcb->cmd_pkt.cdb[2] = page;
7759 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7760
7761 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7762
7763 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7764 LEAVE;
7765 }
7766
7767 /**
7768 * ipr_inquiry_page_supported - Is the given inquiry page supported
7769 * @page0: inquiry page 0 buffer
7770 * @page: page code.
7771 *
7772 * This function determines if the specified inquiry page is supported.
7773 *
7774 * Return value:
7775 * 1 if page is supported / 0 if not
7776 **/
ipr_inquiry_page_supported(struct ipr_inquiry_page0 * page0,u8 page)7777 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7778 {
7779 int i;
7780
7781 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7782 if (page0->page[i] == page)
7783 return 1;
7784
7785 return 0;
7786 }
7787
7788 /**
7789 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
7790 * @ipr_cmd: ipr command struct
7791 *
7792 * This function sends a Page 0xC4 inquiry to the adapter
7793 * to retrieve software VPD information.
7794 *
7795 * Return value:
7796 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7797 **/
ipr_ioafp_pageC4_inquiry(struct ipr_cmnd * ipr_cmd)7798 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
7799 {
7800 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7801 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7802 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7803
7804 ENTER;
7805 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
7806 memset(pageC4, 0, sizeof(*pageC4));
7807
7808 if (ipr_inquiry_page_supported(page0, 0xC4)) {
7809 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
7810 (ioa_cfg->vpd_cbs_dma
7811 + offsetof(struct ipr_misc_cbs,
7812 pageC4_data)),
7813 sizeof(struct ipr_inquiry_pageC4));
7814 return IPR_RC_JOB_RETURN;
7815 }
7816
7817 LEAVE;
7818 return IPR_RC_JOB_CONTINUE;
7819 }
7820
7821 /**
7822 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7823 * @ipr_cmd: ipr command struct
7824 *
7825 * This function sends a Page 0xD0 inquiry to the adapter
7826 * to retrieve adapter capabilities.
7827 *
7828 * Return value:
7829 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7830 **/
ipr_ioafp_cap_inquiry(struct ipr_cmnd * ipr_cmd)7831 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7832 {
7833 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7834 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7835 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7836
7837 ENTER;
7838 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
7839 memset(cap, 0, sizeof(*cap));
7840
7841 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7842 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7843 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7844 sizeof(struct ipr_inquiry_cap));
7845 return IPR_RC_JOB_RETURN;
7846 }
7847
7848 LEAVE;
7849 return IPR_RC_JOB_CONTINUE;
7850 }
7851
7852 /**
7853 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7854 * @ipr_cmd: ipr command struct
7855 *
7856 * This function sends a Page 3 inquiry to the adapter
7857 * to retrieve software VPD information.
7858 *
7859 * Return value:
7860 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7861 **/
ipr_ioafp_page3_inquiry(struct ipr_cmnd * ipr_cmd)7862 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7863 {
7864 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7865
7866 ENTER;
7867
7868 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7869
7870 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7871 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7872 sizeof(struct ipr_inquiry_page3));
7873
7874 LEAVE;
7875 return IPR_RC_JOB_RETURN;
7876 }
7877
7878 /**
7879 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7880 * @ipr_cmd: ipr command struct
7881 *
7882 * This function sends a Page 0 inquiry to the adapter
7883 * to retrieve supported inquiry pages.
7884 *
7885 * Return value:
7886 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7887 **/
ipr_ioafp_page0_inquiry(struct ipr_cmnd * ipr_cmd)7888 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7889 {
7890 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7891 char type[5];
7892
7893 ENTER;
7894
7895 /* Grab the type out of the VPD and store it away */
7896 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7897 type[4] = '\0';
7898 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7899
7900 if (ipr_invalid_adapter(ioa_cfg)) {
7901 dev_err(&ioa_cfg->pdev->dev,
7902 "Adapter not supported in this hardware configuration.\n");
7903
7904 if (!ipr_testmode) {
7905 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
7906 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7907 list_add_tail(&ipr_cmd->queue,
7908 &ioa_cfg->hrrq->hrrq_free_q);
7909 return IPR_RC_JOB_RETURN;
7910 }
7911 }
7912
7913 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7914
7915 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7916 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7917 sizeof(struct ipr_inquiry_page0));
7918
7919 LEAVE;
7920 return IPR_RC_JOB_RETURN;
7921 }
7922
7923 /**
7924 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7925 * @ipr_cmd: ipr command struct
7926 *
7927 * This function sends a standard inquiry to the adapter.
7928 *
7929 * Return value:
7930 * IPR_RC_JOB_RETURN
7931 **/
ipr_ioafp_std_inquiry(struct ipr_cmnd * ipr_cmd)7932 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7933 {
7934 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7935
7936 ENTER;
7937 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7938
7939 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7940 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7941 sizeof(struct ipr_ioa_vpd));
7942
7943 LEAVE;
7944 return IPR_RC_JOB_RETURN;
7945 }
7946
7947 /**
7948 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7949 * @ipr_cmd: ipr command struct
7950 *
7951 * This function send an Identify Host Request Response Queue
7952 * command to establish the HRRQ with the adapter.
7953 *
7954 * Return value:
7955 * IPR_RC_JOB_RETURN
7956 **/
ipr_ioafp_identify_hrrq(struct ipr_cmnd * ipr_cmd)7957 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7958 {
7959 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7960 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7961 struct ipr_hrr_queue *hrrq;
7962
7963 ENTER;
7964 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7965 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7966
7967 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7968 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7969
7970 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7971 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7972
7973 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7974 if (ioa_cfg->sis64)
7975 ioarcb->cmd_pkt.cdb[1] = 0x1;
7976
7977 if (ioa_cfg->nvectors == 1)
7978 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7979 else
7980 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7981
7982 ioarcb->cmd_pkt.cdb[2] =
7983 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7984 ioarcb->cmd_pkt.cdb[3] =
7985 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7986 ioarcb->cmd_pkt.cdb[4] =
7987 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7988 ioarcb->cmd_pkt.cdb[5] =
7989 ((u64) hrrq->host_rrq_dma) & 0xff;
7990 ioarcb->cmd_pkt.cdb[7] =
7991 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7992 ioarcb->cmd_pkt.cdb[8] =
7993 (sizeof(u32) * hrrq->size) & 0xff;
7994
7995 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7996 ioarcb->cmd_pkt.cdb[9] =
7997 ioa_cfg->identify_hrrq_index;
7998
7999 if (ioa_cfg->sis64) {
8000 ioarcb->cmd_pkt.cdb[10] =
8001 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
8002 ioarcb->cmd_pkt.cdb[11] =
8003 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8004 ioarcb->cmd_pkt.cdb[12] =
8005 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8006 ioarcb->cmd_pkt.cdb[13] =
8007 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8008 }
8009
8010 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8011 ioarcb->cmd_pkt.cdb[14] =
8012 ioa_cfg->identify_hrrq_index;
8013
8014 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8015 IPR_INTERNAL_TIMEOUT);
8016
8017 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8018 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8019
8020 LEAVE;
8021 return IPR_RC_JOB_RETURN;
8022 }
8023
8024 LEAVE;
8025 return IPR_RC_JOB_CONTINUE;
8026 }
8027
8028 /**
8029 * ipr_reset_timer_done - Adapter reset timer function
8030 * @ipr_cmd: ipr command struct
8031 *
8032 * Description: This function is used in adapter reset processing
8033 * for timing events. If the reset_cmd pointer in the IOA
8034 * config struct is not this adapter's we are doing nested
8035 * resets and fail_all_ops will take care of freeing the
8036 * command block.
8037 *
8038 * Return value:
8039 * none
8040 **/
ipr_reset_timer_done(struct ipr_cmnd * ipr_cmd)8041 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
8042 {
8043 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8044 unsigned long lock_flags = 0;
8045
8046 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8047
8048 if (ioa_cfg->reset_cmd == ipr_cmd) {
8049 list_del(&ipr_cmd->queue);
8050 ipr_cmd->done(ipr_cmd);
8051 }
8052
8053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8054 }
8055
8056 /**
8057 * ipr_reset_start_timer - Start a timer for adapter reset job
8058 * @ipr_cmd: ipr command struct
8059 * @timeout: timeout value
8060 *
8061 * Description: This function is used in adapter reset processing
8062 * for timing events. If the reset_cmd pointer in the IOA
8063 * config struct is not this adapter's we are doing nested
8064 * resets and fail_all_ops will take care of freeing the
8065 * command block.
8066 *
8067 * Return value:
8068 * none
8069 **/
ipr_reset_start_timer(struct ipr_cmnd * ipr_cmd,unsigned long timeout)8070 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8071 unsigned long timeout)
8072 {
8073
8074 ENTER;
8075 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8076 ipr_cmd->done = ipr_reset_ioa_job;
8077
8078 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8079 ipr_cmd->timer.expires = jiffies + timeout;
8080 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
8081 add_timer(&ipr_cmd->timer);
8082 }
8083
8084 /**
8085 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8086 * @ioa_cfg: ioa cfg struct
8087 *
8088 * Return value:
8089 * nothing
8090 **/
ipr_init_ioa_mem(struct ipr_ioa_cfg * ioa_cfg)8091 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8092 {
8093 struct ipr_hrr_queue *hrrq;
8094
8095 for_each_hrrq(hrrq, ioa_cfg) {
8096 spin_lock(&hrrq->_lock);
8097 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8098
8099 /* Initialize Host RRQ pointers */
8100 hrrq->hrrq_start = hrrq->host_rrq;
8101 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8102 hrrq->hrrq_curr = hrrq->hrrq_start;
8103 hrrq->toggle_bit = 1;
8104 spin_unlock(&hrrq->_lock);
8105 }
8106 wmb();
8107
8108 ioa_cfg->identify_hrrq_index = 0;
8109 if (ioa_cfg->hrrq_num == 1)
8110 atomic_set(&ioa_cfg->hrrq_index, 0);
8111 else
8112 atomic_set(&ioa_cfg->hrrq_index, 1);
8113
8114 /* Zero out config table */
8115 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8116 }
8117
8118 /**
8119 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8120 * @ipr_cmd: ipr command struct
8121 *
8122 * Return value:
8123 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8124 **/
ipr_reset_next_stage(struct ipr_cmnd * ipr_cmd)8125 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8126 {
8127 unsigned long stage, stage_time;
8128 u32 feedback;
8129 volatile u32 int_reg;
8130 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8131 u64 maskval = 0;
8132
8133 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8134 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8135 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8136
8137 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8138
8139 /* sanity check the stage_time value */
8140 if (stage_time == 0)
8141 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8142 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8143 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8144 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8145 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8146
8147 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8148 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8149 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8150 stage_time = ioa_cfg->transop_timeout;
8151 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8152 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8153 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8154 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8155 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8156 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8157 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8158 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8159 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8160 return IPR_RC_JOB_CONTINUE;
8161 }
8162 }
8163
8164 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8165 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8166 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8167 ipr_cmd->done = ipr_reset_ioa_job;
8168 add_timer(&ipr_cmd->timer);
8169
8170 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8171
8172 return IPR_RC_JOB_RETURN;
8173 }
8174
8175 /**
8176 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8177 * @ipr_cmd: ipr command struct
8178 *
8179 * This function reinitializes some control blocks and
8180 * enables destructive diagnostics on the adapter.
8181 *
8182 * Return value:
8183 * IPR_RC_JOB_RETURN
8184 **/
ipr_reset_enable_ioa(struct ipr_cmnd * ipr_cmd)8185 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8186 {
8187 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8188 volatile u32 int_reg;
8189 volatile u64 maskval;
8190 int i;
8191
8192 ENTER;
8193 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8194 ipr_init_ioa_mem(ioa_cfg);
8195
8196 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8197 spin_lock(&ioa_cfg->hrrq[i]._lock);
8198 ioa_cfg->hrrq[i].allow_interrupts = 1;
8199 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8200 }
8201 wmb();
8202 if (ioa_cfg->sis64) {
8203 /* Set the adapter to the correct endian mode. */
8204 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8205 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8206 }
8207
8208 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8209
8210 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8211 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8212 ioa_cfg->regs.clr_interrupt_mask_reg32);
8213 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8214 return IPR_RC_JOB_CONTINUE;
8215 }
8216
8217 /* Enable destructive diagnostics on IOA */
8218 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8219
8220 if (ioa_cfg->sis64) {
8221 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8222 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8223 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8224 } else
8225 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8226
8227 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8228
8229 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8230
8231 if (ioa_cfg->sis64) {
8232 ipr_cmd->job_step = ipr_reset_next_stage;
8233 return IPR_RC_JOB_CONTINUE;
8234 }
8235
8236 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
8237 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8238 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
8239 ipr_cmd->done = ipr_reset_ioa_job;
8240 add_timer(&ipr_cmd->timer);
8241 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8242
8243 LEAVE;
8244 return IPR_RC_JOB_RETURN;
8245 }
8246
8247 /**
8248 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8249 * @ipr_cmd: ipr command struct
8250 *
8251 * This function is invoked when an adapter dump has run out
8252 * of processing time.
8253 *
8254 * Return value:
8255 * IPR_RC_JOB_CONTINUE
8256 **/
ipr_reset_wait_for_dump(struct ipr_cmnd * ipr_cmd)8257 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8258 {
8259 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8260
8261 if (ioa_cfg->sdt_state == GET_DUMP)
8262 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8263 else if (ioa_cfg->sdt_state == READ_DUMP)
8264 ioa_cfg->sdt_state = ABORT_DUMP;
8265
8266 ioa_cfg->dump_timeout = 1;
8267 ipr_cmd->job_step = ipr_reset_alert;
8268
8269 return IPR_RC_JOB_CONTINUE;
8270 }
8271
8272 /**
8273 * ipr_unit_check_no_data - Log a unit check/no data error log
8274 * @ioa_cfg: ioa config struct
8275 *
8276 * Logs an error indicating the adapter unit checked, but for some
8277 * reason, we were unable to fetch the unit check buffer.
8278 *
8279 * Return value:
8280 * nothing
8281 **/
ipr_unit_check_no_data(struct ipr_ioa_cfg * ioa_cfg)8282 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8283 {
8284 ioa_cfg->errors_logged++;
8285 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8286 }
8287
8288 /**
8289 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8290 * @ioa_cfg: ioa config struct
8291 *
8292 * Fetches the unit check buffer from the adapter by clocking the data
8293 * through the mailbox register.
8294 *
8295 * Return value:
8296 * nothing
8297 **/
ipr_get_unit_check_buffer(struct ipr_ioa_cfg * ioa_cfg)8298 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8299 {
8300 unsigned long mailbox;
8301 struct ipr_hostrcb *hostrcb;
8302 struct ipr_uc_sdt sdt;
8303 int rc, length;
8304 u32 ioasc;
8305
8306 mailbox = readl(ioa_cfg->ioa_mailbox);
8307
8308 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8309 ipr_unit_check_no_data(ioa_cfg);
8310 return;
8311 }
8312
8313 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8314 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8315 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8316
8317 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8318 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8319 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8320 ipr_unit_check_no_data(ioa_cfg);
8321 return;
8322 }
8323
8324 /* Find length of the first sdt entry (UC buffer) */
8325 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8326 length = be32_to_cpu(sdt.entry[0].end_token);
8327 else
8328 length = (be32_to_cpu(sdt.entry[0].end_token) -
8329 be32_to_cpu(sdt.entry[0].start_token)) &
8330 IPR_FMT2_MBX_ADDR_MASK;
8331
8332 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8333 struct ipr_hostrcb, queue);
8334 list_del(&hostrcb->queue);
8335 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8336
8337 rc = ipr_get_ldump_data_section(ioa_cfg,
8338 be32_to_cpu(sdt.entry[0].start_token),
8339 (__be32 *)&hostrcb->hcam,
8340 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8341
8342 if (!rc) {
8343 ipr_handle_log_data(ioa_cfg, hostrcb);
8344 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8345 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8346 ioa_cfg->sdt_state == GET_DUMP)
8347 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8348 } else
8349 ipr_unit_check_no_data(ioa_cfg);
8350
8351 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8352 }
8353
8354 /**
8355 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8356 * @ipr_cmd: ipr command struct
8357 *
8358 * Description: This function will call to get the unit check buffer.
8359 *
8360 * Return value:
8361 * IPR_RC_JOB_RETURN
8362 **/
ipr_reset_get_unit_check_job(struct ipr_cmnd * ipr_cmd)8363 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8364 {
8365 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8366
8367 ENTER;
8368 ioa_cfg->ioa_unit_checked = 0;
8369 ipr_get_unit_check_buffer(ioa_cfg);
8370 ipr_cmd->job_step = ipr_reset_alert;
8371 ipr_reset_start_timer(ipr_cmd, 0);
8372
8373 LEAVE;
8374 return IPR_RC_JOB_RETURN;
8375 }
8376
ipr_dump_mailbox_wait(struct ipr_cmnd * ipr_cmd)8377 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8378 {
8379 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8380
8381 ENTER;
8382
8383 if (ioa_cfg->sdt_state != GET_DUMP)
8384 return IPR_RC_JOB_RETURN;
8385
8386 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8387 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8388 IPR_PCII_MAILBOX_STABLE)) {
8389
8390 if (!ipr_cmd->u.time_left)
8391 dev_err(&ioa_cfg->pdev->dev,
8392 "Timed out waiting for Mailbox register.\n");
8393
8394 ioa_cfg->sdt_state = READ_DUMP;
8395 ioa_cfg->dump_timeout = 0;
8396 if (ioa_cfg->sis64)
8397 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8398 else
8399 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8400 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8401 schedule_work(&ioa_cfg->work_q);
8402
8403 } else {
8404 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8405 ipr_reset_start_timer(ipr_cmd,
8406 IPR_CHECK_FOR_RESET_TIMEOUT);
8407 }
8408
8409 LEAVE;
8410 return IPR_RC_JOB_RETURN;
8411 }
8412
8413 /**
8414 * ipr_reset_restore_cfg_space - Restore PCI config space.
8415 * @ipr_cmd: ipr command struct
8416 *
8417 * Description: This function restores the saved PCI config space of
8418 * the adapter, fails all outstanding ops back to the callers, and
8419 * fetches the dump/unit check if applicable to this reset.
8420 *
8421 * Return value:
8422 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8423 **/
ipr_reset_restore_cfg_space(struct ipr_cmnd * ipr_cmd)8424 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8425 {
8426 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8427 u32 int_reg;
8428
8429 ENTER;
8430 ioa_cfg->pdev->state_saved = true;
8431 pci_restore_state(ioa_cfg->pdev);
8432
8433 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8434 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8435 return IPR_RC_JOB_CONTINUE;
8436 }
8437
8438 ipr_fail_all_ops(ioa_cfg);
8439
8440 if (ioa_cfg->sis64) {
8441 /* Set the adapter to the correct endian mode. */
8442 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8443 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8444 }
8445
8446 if (ioa_cfg->ioa_unit_checked) {
8447 if (ioa_cfg->sis64) {
8448 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8449 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8450 return IPR_RC_JOB_RETURN;
8451 } else {
8452 ioa_cfg->ioa_unit_checked = 0;
8453 ipr_get_unit_check_buffer(ioa_cfg);
8454 ipr_cmd->job_step = ipr_reset_alert;
8455 ipr_reset_start_timer(ipr_cmd, 0);
8456 return IPR_RC_JOB_RETURN;
8457 }
8458 }
8459
8460 if (ioa_cfg->in_ioa_bringdown) {
8461 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8462 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8463 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8464 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8465 } else {
8466 ipr_cmd->job_step = ipr_reset_enable_ioa;
8467 }
8468
8469 LEAVE;
8470 return IPR_RC_JOB_CONTINUE;
8471 }
8472
8473 /**
8474 * ipr_reset_bist_done - BIST has completed on the adapter.
8475 * @ipr_cmd: ipr command struct
8476 *
8477 * Description: Unblock config space and resume the reset process.
8478 *
8479 * Return value:
8480 * IPR_RC_JOB_CONTINUE
8481 **/
ipr_reset_bist_done(struct ipr_cmnd * ipr_cmd)8482 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8483 {
8484 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8485
8486 ENTER;
8487 if (ioa_cfg->cfg_locked)
8488 pci_cfg_access_unlock(ioa_cfg->pdev);
8489 ioa_cfg->cfg_locked = 0;
8490 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8491 LEAVE;
8492 return IPR_RC_JOB_CONTINUE;
8493 }
8494
8495 /**
8496 * ipr_reset_start_bist - Run BIST on the adapter.
8497 * @ipr_cmd: ipr command struct
8498 *
8499 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8500 *
8501 * Return value:
8502 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8503 **/
ipr_reset_start_bist(struct ipr_cmnd * ipr_cmd)8504 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8505 {
8506 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8507 int rc = PCIBIOS_SUCCESSFUL;
8508
8509 ENTER;
8510 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8511 writel(IPR_UPROCI_SIS64_START_BIST,
8512 ioa_cfg->regs.set_uproc_interrupt_reg32);
8513 else
8514 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8515
8516 if (rc == PCIBIOS_SUCCESSFUL) {
8517 ipr_cmd->job_step = ipr_reset_bist_done;
8518 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8519 rc = IPR_RC_JOB_RETURN;
8520 } else {
8521 if (ioa_cfg->cfg_locked)
8522 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8523 ioa_cfg->cfg_locked = 0;
8524 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8525 rc = IPR_RC_JOB_CONTINUE;
8526 }
8527
8528 LEAVE;
8529 return rc;
8530 }
8531
8532 /**
8533 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8534 * @ipr_cmd: ipr command struct
8535 *
8536 * Description: This clears PCI reset to the adapter and delays two seconds.
8537 *
8538 * Return value:
8539 * IPR_RC_JOB_RETURN
8540 **/
ipr_reset_slot_reset_done(struct ipr_cmnd * ipr_cmd)8541 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8542 {
8543 ENTER;
8544 ipr_cmd->job_step = ipr_reset_bist_done;
8545 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8546 LEAVE;
8547 return IPR_RC_JOB_RETURN;
8548 }
8549
8550 /**
8551 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8552 * @work: work struct
8553 *
8554 * Description: This pulses warm reset to a slot.
8555 *
8556 **/
ipr_reset_reset_work(struct work_struct * work)8557 static void ipr_reset_reset_work(struct work_struct *work)
8558 {
8559 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8560 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8561 struct pci_dev *pdev = ioa_cfg->pdev;
8562 unsigned long lock_flags = 0;
8563
8564 ENTER;
8565 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8566 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8567 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8568
8569 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8570 if (ioa_cfg->reset_cmd == ipr_cmd)
8571 ipr_reset_ioa_job(ipr_cmd);
8572 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8573 LEAVE;
8574 }
8575
8576 /**
8577 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8578 * @ipr_cmd: ipr command struct
8579 *
8580 * Description: This asserts PCI reset to the adapter.
8581 *
8582 * Return value:
8583 * IPR_RC_JOB_RETURN
8584 **/
ipr_reset_slot_reset(struct ipr_cmnd * ipr_cmd)8585 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8586 {
8587 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8588
8589 ENTER;
8590 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8591 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8592 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8593 LEAVE;
8594 return IPR_RC_JOB_RETURN;
8595 }
8596
8597 /**
8598 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8599 * @ipr_cmd: ipr command struct
8600 *
8601 * Description: This attempts to block config access to the IOA.
8602 *
8603 * Return value:
8604 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8605 **/
ipr_reset_block_config_access_wait(struct ipr_cmnd * ipr_cmd)8606 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8607 {
8608 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8609 int rc = IPR_RC_JOB_CONTINUE;
8610
8611 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8612 ioa_cfg->cfg_locked = 1;
8613 ipr_cmd->job_step = ioa_cfg->reset;
8614 } else {
8615 if (ipr_cmd->u.time_left) {
8616 rc = IPR_RC_JOB_RETURN;
8617 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8618 ipr_reset_start_timer(ipr_cmd,
8619 IPR_CHECK_FOR_RESET_TIMEOUT);
8620 } else {
8621 ipr_cmd->job_step = ioa_cfg->reset;
8622 dev_err(&ioa_cfg->pdev->dev,
8623 "Timed out waiting to lock config access. Resetting anyway.\n");
8624 }
8625 }
8626
8627 return rc;
8628 }
8629
8630 /**
8631 * ipr_reset_block_config_access - Block config access to the IOA
8632 * @ipr_cmd: ipr command struct
8633 *
8634 * Description: This attempts to block config access to the IOA
8635 *
8636 * Return value:
8637 * IPR_RC_JOB_CONTINUE
8638 **/
ipr_reset_block_config_access(struct ipr_cmnd * ipr_cmd)8639 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8640 {
8641 ipr_cmd->ioa_cfg->cfg_locked = 0;
8642 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8643 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8644 return IPR_RC_JOB_CONTINUE;
8645 }
8646
8647 /**
8648 * ipr_reset_allowed - Query whether or not IOA can be reset
8649 * @ioa_cfg: ioa config struct
8650 *
8651 * Return value:
8652 * 0 if reset not allowed / non-zero if reset is allowed
8653 **/
ipr_reset_allowed(struct ipr_ioa_cfg * ioa_cfg)8654 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8655 {
8656 volatile u32 temp_reg;
8657
8658 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8659 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8660 }
8661
8662 /**
8663 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8664 * @ipr_cmd: ipr command struct
8665 *
8666 * Description: This function waits for adapter permission to run BIST,
8667 * then runs BIST. If the adapter does not give permission after a
8668 * reasonable time, we will reset the adapter anyway. The impact of
8669 * resetting the adapter without warning the adapter is the risk of
8670 * losing the persistent error log on the adapter. If the adapter is
8671 * reset while it is writing to the flash on the adapter, the flash
8672 * segment will have bad ECC and be zeroed.
8673 *
8674 * Return value:
8675 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8676 **/
ipr_reset_wait_to_start_bist(struct ipr_cmnd * ipr_cmd)8677 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8678 {
8679 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8680 int rc = IPR_RC_JOB_RETURN;
8681
8682 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8683 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8684 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8685 } else {
8686 ipr_cmd->job_step = ipr_reset_block_config_access;
8687 rc = IPR_RC_JOB_CONTINUE;
8688 }
8689
8690 return rc;
8691 }
8692
8693 /**
8694 * ipr_reset_alert - Alert the adapter of a pending reset
8695 * @ipr_cmd: ipr command struct
8696 *
8697 * Description: This function alerts the adapter that it will be reset.
8698 * If memory space is not currently enabled, proceed directly
8699 * to running BIST on the adapter. The timer must always be started
8700 * so we guarantee we do not run BIST from ipr_isr.
8701 *
8702 * Return value:
8703 * IPR_RC_JOB_RETURN
8704 **/
ipr_reset_alert(struct ipr_cmnd * ipr_cmd)8705 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8706 {
8707 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8708 u16 cmd_reg;
8709 int rc;
8710
8711 ENTER;
8712 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8713
8714 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8715 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8716 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8717 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8718 } else {
8719 ipr_cmd->job_step = ipr_reset_block_config_access;
8720 }
8721
8722 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8723 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8724
8725 LEAVE;
8726 return IPR_RC_JOB_RETURN;
8727 }
8728
8729 /**
8730 * ipr_reset_quiesce_done - Complete IOA disconnect
8731 * @ipr_cmd: ipr command struct
8732 *
8733 * Description: Freeze the adapter to complete quiesce processing
8734 *
8735 * Return value:
8736 * IPR_RC_JOB_CONTINUE
8737 **/
ipr_reset_quiesce_done(struct ipr_cmnd * ipr_cmd)8738 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8739 {
8740 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8741
8742 ENTER;
8743 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8744 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8745 LEAVE;
8746 return IPR_RC_JOB_CONTINUE;
8747 }
8748
8749 /**
8750 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8751 * @ipr_cmd: ipr command struct
8752 *
8753 * Description: Ensure nothing is outstanding to the IOA and
8754 * proceed with IOA disconnect. Otherwise reset the IOA.
8755 *
8756 * Return value:
8757 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8758 **/
ipr_reset_cancel_hcam_done(struct ipr_cmnd * ipr_cmd)8759 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8760 {
8761 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8762 struct ipr_cmnd *loop_cmd;
8763 struct ipr_hrr_queue *hrrq;
8764 int rc = IPR_RC_JOB_CONTINUE;
8765 int count = 0;
8766
8767 ENTER;
8768 ipr_cmd->job_step = ipr_reset_quiesce_done;
8769
8770 for_each_hrrq(hrrq, ioa_cfg) {
8771 spin_lock(&hrrq->_lock);
8772 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
8773 count++;
8774 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8775 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8776 rc = IPR_RC_JOB_RETURN;
8777 break;
8778 }
8779 spin_unlock(&hrrq->_lock);
8780
8781 if (count)
8782 break;
8783 }
8784
8785 LEAVE;
8786 return rc;
8787 }
8788
8789 /**
8790 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
8791 * @ipr_cmd: ipr command struct
8792 *
8793 * Description: Cancel any oustanding HCAMs to the IOA.
8794 *
8795 * Return value:
8796 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8797 **/
ipr_reset_cancel_hcam(struct ipr_cmnd * ipr_cmd)8798 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
8799 {
8800 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8801 int rc = IPR_RC_JOB_CONTINUE;
8802 struct ipr_cmd_pkt *cmd_pkt;
8803 struct ipr_cmnd *hcam_cmd;
8804 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
8805
8806 ENTER;
8807 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
8808
8809 if (!hrrq->ioa_is_dead) {
8810 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
8811 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
8812 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
8813 continue;
8814
8815 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8816 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8817 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
8818 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
8819 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
8820 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
8821 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
8822 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
8823 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
8824 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
8825 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
8826 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
8827 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
8828 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
8829
8830 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8831 IPR_CANCEL_TIMEOUT);
8832
8833 rc = IPR_RC_JOB_RETURN;
8834 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8835 break;
8836 }
8837 }
8838 } else
8839 ipr_cmd->job_step = ipr_reset_alert;
8840
8841 LEAVE;
8842 return rc;
8843 }
8844
8845 /**
8846 * ipr_reset_ucode_download_done - Microcode download completion
8847 * @ipr_cmd: ipr command struct
8848 *
8849 * Description: This function unmaps the microcode download buffer.
8850 *
8851 * Return value:
8852 * IPR_RC_JOB_CONTINUE
8853 **/
ipr_reset_ucode_download_done(struct ipr_cmnd * ipr_cmd)8854 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8855 {
8856 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8857 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8858
8859 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
8860 sglist->num_sg, DMA_TO_DEVICE);
8861
8862 ipr_cmd->job_step = ipr_reset_alert;
8863 return IPR_RC_JOB_CONTINUE;
8864 }
8865
8866 /**
8867 * ipr_reset_ucode_download - Download microcode to the adapter
8868 * @ipr_cmd: ipr command struct
8869 *
8870 * Description: This function checks to see if it there is microcode
8871 * to download to the adapter. If there is, a download is performed.
8872 *
8873 * Return value:
8874 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8875 **/
ipr_reset_ucode_download(struct ipr_cmnd * ipr_cmd)8876 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8877 {
8878 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8879 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8880
8881 ENTER;
8882 ipr_cmd->job_step = ipr_reset_alert;
8883
8884 if (!sglist)
8885 return IPR_RC_JOB_CONTINUE;
8886
8887 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8888 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8889 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8890 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8891 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8892 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8893 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8894
8895 if (ioa_cfg->sis64)
8896 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8897 else
8898 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8899 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8900
8901 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8902 IPR_WRITE_BUFFER_TIMEOUT);
8903
8904 LEAVE;
8905 return IPR_RC_JOB_RETURN;
8906 }
8907
8908 /**
8909 * ipr_reset_shutdown_ioa - Shutdown the adapter
8910 * @ipr_cmd: ipr command struct
8911 *
8912 * Description: This function issues an adapter shutdown of the
8913 * specified type to the specified adapter as part of the
8914 * adapter reset job.
8915 *
8916 * Return value:
8917 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8918 **/
ipr_reset_shutdown_ioa(struct ipr_cmnd * ipr_cmd)8919 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8920 {
8921 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8922 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8923 unsigned long timeout;
8924 int rc = IPR_RC_JOB_CONTINUE;
8925
8926 ENTER;
8927 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
8928 ipr_cmd->job_step = ipr_reset_cancel_hcam;
8929 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
8930 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8931 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8932 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8933 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8934 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8935
8936 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8937 timeout = IPR_SHUTDOWN_TIMEOUT;
8938 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8939 timeout = IPR_INTERNAL_TIMEOUT;
8940 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8941 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8942 else
8943 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8944
8945 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8946
8947 rc = IPR_RC_JOB_RETURN;
8948 ipr_cmd->job_step = ipr_reset_ucode_download;
8949 } else
8950 ipr_cmd->job_step = ipr_reset_alert;
8951
8952 LEAVE;
8953 return rc;
8954 }
8955
8956 /**
8957 * ipr_reset_ioa_job - Adapter reset job
8958 * @ipr_cmd: ipr command struct
8959 *
8960 * Description: This function is the job router for the adapter reset job.
8961 *
8962 * Return value:
8963 * none
8964 **/
ipr_reset_ioa_job(struct ipr_cmnd * ipr_cmd)8965 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8966 {
8967 u32 rc, ioasc;
8968 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8969
8970 do {
8971 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8972
8973 if (ioa_cfg->reset_cmd != ipr_cmd) {
8974 /*
8975 * We are doing nested adapter resets and this is
8976 * not the current reset job.
8977 */
8978 list_add_tail(&ipr_cmd->queue,
8979 &ipr_cmd->hrrq->hrrq_free_q);
8980 return;
8981 }
8982
8983 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8984 rc = ipr_cmd->job_step_failed(ipr_cmd);
8985 if (rc == IPR_RC_JOB_RETURN)
8986 return;
8987 }
8988
8989 ipr_reinit_ipr_cmnd(ipr_cmd);
8990 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8991 rc = ipr_cmd->job_step(ipr_cmd);
8992 } while (rc == IPR_RC_JOB_CONTINUE);
8993 }
8994
8995 /**
8996 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8997 * @ioa_cfg: ioa config struct
8998 * @job_step: first job step of reset job
8999 * @shutdown_type: shutdown type
9000 *
9001 * Description: This function will initiate the reset of the given adapter
9002 * starting at the selected job step.
9003 * If the caller needs to wait on the completion of the reset,
9004 * the caller must sleep on the reset_wait_q.
9005 *
9006 * Return value:
9007 * none
9008 **/
_ipr_initiate_ioa_reset(struct ipr_ioa_cfg * ioa_cfg,int (* job_step)(struct ipr_cmnd *),enum ipr_shutdown_type shutdown_type)9009 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9010 int (*job_step) (struct ipr_cmnd *),
9011 enum ipr_shutdown_type shutdown_type)
9012 {
9013 struct ipr_cmnd *ipr_cmd;
9014 int i;
9015
9016 ioa_cfg->in_reset_reload = 1;
9017 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9018 spin_lock(&ioa_cfg->hrrq[i]._lock);
9019 ioa_cfg->hrrq[i].allow_cmds = 0;
9020 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9021 }
9022 wmb();
9023 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
9024 scsi_block_requests(ioa_cfg->host);
9025
9026 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9027 ioa_cfg->reset_cmd = ipr_cmd;
9028 ipr_cmd->job_step = job_step;
9029 ipr_cmd->u.shutdown_type = shutdown_type;
9030
9031 ipr_reset_ioa_job(ipr_cmd);
9032 }
9033
9034 /**
9035 * ipr_initiate_ioa_reset - Initiate an adapter reset
9036 * @ioa_cfg: ioa config struct
9037 * @shutdown_type: shutdown type
9038 *
9039 * Description: This function will initiate the reset of the given adapter.
9040 * If the caller needs to wait on the completion of the reset,
9041 * the caller must sleep on the reset_wait_q.
9042 *
9043 * Return value:
9044 * none
9045 **/
ipr_initiate_ioa_reset(struct ipr_ioa_cfg * ioa_cfg,enum ipr_shutdown_type shutdown_type)9046 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9047 enum ipr_shutdown_type shutdown_type)
9048 {
9049 int i;
9050
9051 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9052 return;
9053
9054 if (ioa_cfg->in_reset_reload) {
9055 if (ioa_cfg->sdt_state == GET_DUMP)
9056 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9057 else if (ioa_cfg->sdt_state == READ_DUMP)
9058 ioa_cfg->sdt_state = ABORT_DUMP;
9059 }
9060
9061 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9062 dev_err(&ioa_cfg->pdev->dev,
9063 "IOA taken offline - error recovery failed\n");
9064
9065 ioa_cfg->reset_retries = 0;
9066 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9067 spin_lock(&ioa_cfg->hrrq[i]._lock);
9068 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9069 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9070 }
9071 wmb();
9072
9073 if (ioa_cfg->in_ioa_bringdown) {
9074 ioa_cfg->reset_cmd = NULL;
9075 ioa_cfg->in_reset_reload = 0;
9076 ipr_fail_all_ops(ioa_cfg);
9077 wake_up_all(&ioa_cfg->reset_wait_q);
9078
9079 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9080 spin_unlock_irq(ioa_cfg->host->host_lock);
9081 scsi_unblock_requests(ioa_cfg->host);
9082 spin_lock_irq(ioa_cfg->host->host_lock);
9083 }
9084 return;
9085 } else {
9086 ioa_cfg->in_ioa_bringdown = 1;
9087 shutdown_type = IPR_SHUTDOWN_NONE;
9088 }
9089 }
9090
9091 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9092 shutdown_type);
9093 }
9094
9095 /**
9096 * ipr_reset_freeze - Hold off all I/O activity
9097 * @ipr_cmd: ipr command struct
9098 *
9099 * Description: If the PCI slot is frozen, hold off all I/O
9100 * activity; then, as soon as the slot is available again,
9101 * initiate an adapter reset.
9102 */
ipr_reset_freeze(struct ipr_cmnd * ipr_cmd)9103 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9104 {
9105 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9106 int i;
9107
9108 /* Disallow new interrupts, avoid loop */
9109 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9110 spin_lock(&ioa_cfg->hrrq[i]._lock);
9111 ioa_cfg->hrrq[i].allow_interrupts = 0;
9112 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9113 }
9114 wmb();
9115 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9116 ipr_cmd->done = ipr_reset_ioa_job;
9117 return IPR_RC_JOB_RETURN;
9118 }
9119
9120 /**
9121 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9122 * @pdev: PCI device struct
9123 *
9124 * Description: This routine is called to tell us that the MMIO
9125 * access to the IOA has been restored
9126 */
ipr_pci_mmio_enabled(struct pci_dev * pdev)9127 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9128 {
9129 unsigned long flags = 0;
9130 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9131
9132 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9133 if (!ioa_cfg->probe_done)
9134 pci_save_state(pdev);
9135 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9136 return PCI_ERS_RESULT_NEED_RESET;
9137 }
9138
9139 /**
9140 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9141 * @pdev: PCI device struct
9142 *
9143 * Description: This routine is called to tell us that the PCI bus
9144 * is down. Can't do anything here, except put the device driver
9145 * into a holding pattern, waiting for the PCI bus to come back.
9146 */
ipr_pci_frozen(struct pci_dev * pdev)9147 static void ipr_pci_frozen(struct pci_dev *pdev)
9148 {
9149 unsigned long flags = 0;
9150 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9151
9152 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9153 if (ioa_cfg->probe_done)
9154 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9155 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9156 }
9157
9158 /**
9159 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9160 * @pdev: PCI device struct
9161 *
9162 * Description: This routine is called by the pci error recovery
9163 * code after the PCI slot has been reset, just before we
9164 * should resume normal operations.
9165 */
ipr_pci_slot_reset(struct pci_dev * pdev)9166 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9167 {
9168 unsigned long flags = 0;
9169 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9170
9171 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9172 if (ioa_cfg->probe_done) {
9173 if (ioa_cfg->needs_warm_reset)
9174 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9175 else
9176 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9177 IPR_SHUTDOWN_NONE);
9178 } else
9179 wake_up_all(&ioa_cfg->eeh_wait_q);
9180 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9181 return PCI_ERS_RESULT_RECOVERED;
9182 }
9183
9184 /**
9185 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9186 * @pdev: PCI device struct
9187 *
9188 * Description: This routine is called when the PCI bus has
9189 * permanently failed.
9190 */
ipr_pci_perm_failure(struct pci_dev * pdev)9191 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9192 {
9193 unsigned long flags = 0;
9194 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9195 int i;
9196
9197 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9198 if (ioa_cfg->probe_done) {
9199 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9200 ioa_cfg->sdt_state = ABORT_DUMP;
9201 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9202 ioa_cfg->in_ioa_bringdown = 1;
9203 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9204 spin_lock(&ioa_cfg->hrrq[i]._lock);
9205 ioa_cfg->hrrq[i].allow_cmds = 0;
9206 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9207 }
9208 wmb();
9209 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9210 } else
9211 wake_up_all(&ioa_cfg->eeh_wait_q);
9212 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9213 }
9214
9215 /**
9216 * ipr_pci_error_detected - Called when a PCI error is detected.
9217 * @pdev: PCI device struct
9218 * @state: PCI channel state
9219 *
9220 * Description: Called when a PCI error is detected.
9221 *
9222 * Return value:
9223 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9224 */
ipr_pci_error_detected(struct pci_dev * pdev,pci_channel_state_t state)9225 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9226 pci_channel_state_t state)
9227 {
9228 switch (state) {
9229 case pci_channel_io_frozen:
9230 ipr_pci_frozen(pdev);
9231 return PCI_ERS_RESULT_CAN_RECOVER;
9232 case pci_channel_io_perm_failure:
9233 ipr_pci_perm_failure(pdev);
9234 return PCI_ERS_RESULT_DISCONNECT;
9235 break;
9236 default:
9237 break;
9238 }
9239 return PCI_ERS_RESULT_NEED_RESET;
9240 }
9241
9242 /**
9243 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9244 * @ioa_cfg: ioa cfg struct
9245 *
9246 * Description: This is the second phase of adapter intialization
9247 * This function takes care of initilizing the adapter to the point
9248 * where it can accept new commands.
9249
9250 * Return value:
9251 * 0 on success / -EIO on failure
9252 **/
ipr_probe_ioa_part2(struct ipr_ioa_cfg * ioa_cfg)9253 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9254 {
9255 int rc = 0;
9256 unsigned long host_lock_flags = 0;
9257
9258 ENTER;
9259 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9260 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9261 ioa_cfg->probe_done = 1;
9262 if (ioa_cfg->needs_hard_reset) {
9263 ioa_cfg->needs_hard_reset = 0;
9264 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9265 } else
9266 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9267 IPR_SHUTDOWN_NONE);
9268 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9269
9270 LEAVE;
9271 return rc;
9272 }
9273
9274 /**
9275 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9276 * @ioa_cfg: ioa config struct
9277 *
9278 * Return value:
9279 * none
9280 **/
ipr_free_cmd_blks(struct ipr_ioa_cfg * ioa_cfg)9281 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9282 {
9283 int i;
9284
9285 if (ioa_cfg->ipr_cmnd_list) {
9286 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9287 if (ioa_cfg->ipr_cmnd_list[i])
9288 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9289 ioa_cfg->ipr_cmnd_list[i],
9290 ioa_cfg->ipr_cmnd_list_dma[i]);
9291
9292 ioa_cfg->ipr_cmnd_list[i] = NULL;
9293 }
9294 }
9295
9296 if (ioa_cfg->ipr_cmd_pool)
9297 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9298
9299 kfree(ioa_cfg->ipr_cmnd_list);
9300 kfree(ioa_cfg->ipr_cmnd_list_dma);
9301 ioa_cfg->ipr_cmnd_list = NULL;
9302 ioa_cfg->ipr_cmnd_list_dma = NULL;
9303 ioa_cfg->ipr_cmd_pool = NULL;
9304 }
9305
9306 /**
9307 * ipr_free_mem - Frees memory allocated for an adapter
9308 * @ioa_cfg: ioa cfg struct
9309 *
9310 * Return value:
9311 * nothing
9312 **/
ipr_free_mem(struct ipr_ioa_cfg * ioa_cfg)9313 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9314 {
9315 int i;
9316
9317 kfree(ioa_cfg->res_entries);
9318 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9319 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9320 ipr_free_cmd_blks(ioa_cfg);
9321
9322 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9323 dma_free_coherent(&ioa_cfg->pdev->dev,
9324 sizeof(u32) * ioa_cfg->hrrq[i].size,
9325 ioa_cfg->hrrq[i].host_rrq,
9326 ioa_cfg->hrrq[i].host_rrq_dma);
9327
9328 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9329 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9330
9331 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9332 dma_free_coherent(&ioa_cfg->pdev->dev,
9333 sizeof(struct ipr_hostrcb),
9334 ioa_cfg->hostrcb[i],
9335 ioa_cfg->hostrcb_dma[i]);
9336 }
9337
9338 ipr_free_dump(ioa_cfg);
9339 kfree(ioa_cfg->trace);
9340 }
9341
9342 /**
9343 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9344 * @ioa_cfg: ipr cfg struct
9345 *
9346 * This function frees all allocated IRQs for the
9347 * specified adapter.
9348 *
9349 * Return value:
9350 * none
9351 **/
ipr_free_irqs(struct ipr_ioa_cfg * ioa_cfg)9352 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9353 {
9354 struct pci_dev *pdev = ioa_cfg->pdev;
9355
9356 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9357 ioa_cfg->intr_flag == IPR_USE_MSIX) {
9358 int i;
9359 for (i = 0; i < ioa_cfg->nvectors; i++)
9360 free_irq(ioa_cfg->vectors_info[i].vec,
9361 &ioa_cfg->hrrq[i]);
9362 } else
9363 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
9364
9365 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9366 pci_disable_msi(pdev);
9367 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9368 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9369 pci_disable_msix(pdev);
9370 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9371 }
9372 }
9373
9374 /**
9375 * ipr_free_all_resources - Free all allocated resources for an adapter.
9376 * @ipr_cmd: ipr command struct
9377 *
9378 * This function frees all allocated resources for the
9379 * specified adapter.
9380 *
9381 * Return value:
9382 * none
9383 **/
ipr_free_all_resources(struct ipr_ioa_cfg * ioa_cfg)9384 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9385 {
9386 struct pci_dev *pdev = ioa_cfg->pdev;
9387
9388 ENTER;
9389 ipr_free_irqs(ioa_cfg);
9390 if (ioa_cfg->reset_work_q)
9391 destroy_workqueue(ioa_cfg->reset_work_q);
9392 iounmap(ioa_cfg->hdw_dma_regs);
9393 pci_release_regions(pdev);
9394 ipr_free_mem(ioa_cfg);
9395 scsi_host_put(ioa_cfg->host);
9396 pci_disable_device(pdev);
9397 LEAVE;
9398 }
9399
9400 /**
9401 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9402 * @ioa_cfg: ioa config struct
9403 *
9404 * Return value:
9405 * 0 on success / -ENOMEM on allocation failure
9406 **/
ipr_alloc_cmd_blks(struct ipr_ioa_cfg * ioa_cfg)9407 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9408 {
9409 struct ipr_cmnd *ipr_cmd;
9410 struct ipr_ioarcb *ioarcb;
9411 dma_addr_t dma_addr;
9412 int i, entries_each_hrrq, hrrq_id = 0;
9413
9414 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9415 sizeof(struct ipr_cmnd), 512, 0);
9416
9417 if (!ioa_cfg->ipr_cmd_pool)
9418 return -ENOMEM;
9419
9420 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9421 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9422
9423 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9424 ipr_free_cmd_blks(ioa_cfg);
9425 return -ENOMEM;
9426 }
9427
9428 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9429 if (ioa_cfg->hrrq_num > 1) {
9430 if (i == 0) {
9431 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9432 ioa_cfg->hrrq[i].min_cmd_id = 0;
9433 ioa_cfg->hrrq[i].max_cmd_id =
9434 (entries_each_hrrq - 1);
9435 } else {
9436 entries_each_hrrq =
9437 IPR_NUM_BASE_CMD_BLKS/
9438 (ioa_cfg->hrrq_num - 1);
9439 ioa_cfg->hrrq[i].min_cmd_id =
9440 IPR_NUM_INTERNAL_CMD_BLKS +
9441 (i - 1) * entries_each_hrrq;
9442 ioa_cfg->hrrq[i].max_cmd_id =
9443 (IPR_NUM_INTERNAL_CMD_BLKS +
9444 i * entries_each_hrrq - 1);
9445 }
9446 } else {
9447 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9448 ioa_cfg->hrrq[i].min_cmd_id = 0;
9449 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9450 }
9451 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9452 }
9453
9454 BUG_ON(ioa_cfg->hrrq_num == 0);
9455
9456 i = IPR_NUM_CMD_BLKS -
9457 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9458 if (i > 0) {
9459 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9460 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9461 }
9462
9463 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9464 ipr_cmd = dma_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
9465
9466 if (!ipr_cmd) {
9467 ipr_free_cmd_blks(ioa_cfg);
9468 return -ENOMEM;
9469 }
9470
9471 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
9472 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9473 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9474
9475 ioarcb = &ipr_cmd->ioarcb;
9476 ipr_cmd->dma_addr = dma_addr;
9477 if (ioa_cfg->sis64)
9478 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9479 else
9480 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9481
9482 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9483 if (ioa_cfg->sis64) {
9484 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9485 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9486 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9487 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9488 } else {
9489 ioarcb->write_ioadl_addr =
9490 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9491 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9492 ioarcb->ioasa_host_pci_addr =
9493 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9494 }
9495 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9496 ipr_cmd->cmd_index = i;
9497 ipr_cmd->ioa_cfg = ioa_cfg;
9498 ipr_cmd->sense_buffer_dma = dma_addr +
9499 offsetof(struct ipr_cmnd, sense_buffer);
9500
9501 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9502 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9503 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9504 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9505 hrrq_id++;
9506 }
9507
9508 return 0;
9509 }
9510
9511 /**
9512 * ipr_alloc_mem - Allocate memory for an adapter
9513 * @ioa_cfg: ioa config struct
9514 *
9515 * Return value:
9516 * 0 on success / non-zero for error
9517 **/
ipr_alloc_mem(struct ipr_ioa_cfg * ioa_cfg)9518 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9519 {
9520 struct pci_dev *pdev = ioa_cfg->pdev;
9521 int i, rc = -ENOMEM;
9522
9523 ENTER;
9524 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
9525 ioa_cfg->max_devs_supported, GFP_KERNEL);
9526
9527 if (!ioa_cfg->res_entries)
9528 goto out;
9529
9530 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9531 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9532 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9533 }
9534
9535 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9536 sizeof(struct ipr_misc_cbs),
9537 &ioa_cfg->vpd_cbs_dma,
9538 GFP_KERNEL);
9539
9540 if (!ioa_cfg->vpd_cbs)
9541 goto out_free_res_entries;
9542
9543 if (ipr_alloc_cmd_blks(ioa_cfg))
9544 goto out_free_vpd_cbs;
9545
9546 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9547 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9548 sizeof(u32) * ioa_cfg->hrrq[i].size,
9549 &ioa_cfg->hrrq[i].host_rrq_dma,
9550 GFP_KERNEL);
9551
9552 if (!ioa_cfg->hrrq[i].host_rrq) {
9553 while (--i > 0)
9554 dma_free_coherent(&pdev->dev,
9555 sizeof(u32) * ioa_cfg->hrrq[i].size,
9556 ioa_cfg->hrrq[i].host_rrq,
9557 ioa_cfg->hrrq[i].host_rrq_dma);
9558 goto out_ipr_free_cmd_blocks;
9559 }
9560 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9561 }
9562
9563 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9564 ioa_cfg->cfg_table_size,
9565 &ioa_cfg->cfg_table_dma,
9566 GFP_KERNEL);
9567
9568 if (!ioa_cfg->u.cfg_table)
9569 goto out_free_host_rrq;
9570
9571 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9572 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9573 sizeof(struct ipr_hostrcb),
9574 &ioa_cfg->hostrcb_dma[i],
9575 GFP_KERNEL);
9576
9577 if (!ioa_cfg->hostrcb[i])
9578 goto out_free_hostrcb_dma;
9579
9580 ioa_cfg->hostrcb[i]->hostrcb_dma =
9581 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9582 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9583 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9584 }
9585
9586 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9587 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9588
9589 if (!ioa_cfg->trace)
9590 goto out_free_hostrcb_dma;
9591
9592 rc = 0;
9593 out:
9594 LEAVE;
9595 return rc;
9596
9597 out_free_hostrcb_dma:
9598 while (i-- > 0) {
9599 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9600 ioa_cfg->hostrcb[i],
9601 ioa_cfg->hostrcb_dma[i]);
9602 }
9603 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9604 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9605 out_free_host_rrq:
9606 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9607 dma_free_coherent(&pdev->dev,
9608 sizeof(u32) * ioa_cfg->hrrq[i].size,
9609 ioa_cfg->hrrq[i].host_rrq,
9610 ioa_cfg->hrrq[i].host_rrq_dma);
9611 }
9612 out_ipr_free_cmd_blocks:
9613 ipr_free_cmd_blks(ioa_cfg);
9614 out_free_vpd_cbs:
9615 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9616 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9617 out_free_res_entries:
9618 kfree(ioa_cfg->res_entries);
9619 goto out;
9620 }
9621
9622 /**
9623 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9624 * @ioa_cfg: ioa config struct
9625 *
9626 * Return value:
9627 * none
9628 **/
ipr_initialize_bus_attr(struct ipr_ioa_cfg * ioa_cfg)9629 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9630 {
9631 int i;
9632
9633 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9634 ioa_cfg->bus_attr[i].bus = i;
9635 ioa_cfg->bus_attr[i].qas_enabled = 0;
9636 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9637 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9638 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9639 else
9640 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9641 }
9642 }
9643
9644 /**
9645 * ipr_init_regs - Initialize IOA registers
9646 * @ioa_cfg: ioa config struct
9647 *
9648 * Return value:
9649 * none
9650 **/
ipr_init_regs(struct ipr_ioa_cfg * ioa_cfg)9651 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9652 {
9653 const struct ipr_interrupt_offsets *p;
9654 struct ipr_interrupts *t;
9655 void __iomem *base;
9656
9657 p = &ioa_cfg->chip_cfg->regs;
9658 t = &ioa_cfg->regs;
9659 base = ioa_cfg->hdw_dma_regs;
9660
9661 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9662 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9663 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9664 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9665 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9666 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9667 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9668 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9669 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9670 t->ioarrin_reg = base + p->ioarrin_reg;
9671 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9672 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9673 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9674 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9675 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9676 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9677
9678 if (ioa_cfg->sis64) {
9679 t->init_feedback_reg = base + p->init_feedback_reg;
9680 t->dump_addr_reg = base + p->dump_addr_reg;
9681 t->dump_data_reg = base + p->dump_data_reg;
9682 t->endian_swap_reg = base + p->endian_swap_reg;
9683 }
9684 }
9685
9686 /**
9687 * ipr_init_ioa_cfg - Initialize IOA config struct
9688 * @ioa_cfg: ioa config struct
9689 * @host: scsi host struct
9690 * @pdev: PCI dev struct
9691 *
9692 * Return value:
9693 * none
9694 **/
ipr_init_ioa_cfg(struct ipr_ioa_cfg * ioa_cfg,struct Scsi_Host * host,struct pci_dev * pdev)9695 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9696 struct Scsi_Host *host, struct pci_dev *pdev)
9697 {
9698 int i;
9699
9700 ioa_cfg->host = host;
9701 ioa_cfg->pdev = pdev;
9702 ioa_cfg->log_level = ipr_log_level;
9703 ioa_cfg->doorbell = IPR_DOORBELL;
9704 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9705 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9706 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9707 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9708 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9709 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9710
9711 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9712 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9713 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9714 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9715 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9716 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9717 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9718 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9719 ioa_cfg->sdt_state = INACTIVE;
9720
9721 ipr_initialize_bus_attr(ioa_cfg);
9722 ioa_cfg->max_devs_supported = ipr_max_devs;
9723
9724 if (ioa_cfg->sis64) {
9725 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9726 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9727 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9728 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9729 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9730 + ((sizeof(struct ipr_config_table_entry64)
9731 * ioa_cfg->max_devs_supported)));
9732 } else {
9733 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9734 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9735 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9736 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9737 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9738 + ((sizeof(struct ipr_config_table_entry)
9739 * ioa_cfg->max_devs_supported)));
9740 }
9741
9742 host->max_channel = IPR_VSET_BUS;
9743 host->unique_id = host->host_no;
9744 host->max_cmd_len = IPR_MAX_CDB_LEN;
9745 host->can_queue = ioa_cfg->max_cmds;
9746 pci_set_drvdata(pdev, ioa_cfg);
9747
9748 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9749 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9750 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9751 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9752 if (i == 0)
9753 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9754 else
9755 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9756 }
9757 }
9758
9759 /**
9760 * ipr_get_chip_info - Find adapter chip information
9761 * @dev_id: PCI device id struct
9762 *
9763 * Return value:
9764 * ptr to chip information on success / NULL on failure
9765 **/
9766 static const struct ipr_chip_t *
ipr_get_chip_info(const struct pci_device_id * dev_id)9767 ipr_get_chip_info(const struct pci_device_id *dev_id)
9768 {
9769 int i;
9770
9771 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9772 if (ipr_chip[i].vendor == dev_id->vendor &&
9773 ipr_chip[i].device == dev_id->device)
9774 return &ipr_chip[i];
9775 return NULL;
9776 }
9777
9778 /**
9779 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
9780 * during probe time
9781 * @ioa_cfg: ioa config struct
9782 *
9783 * Return value:
9784 * None
9785 **/
ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg * ioa_cfg)9786 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
9787 {
9788 struct pci_dev *pdev = ioa_cfg->pdev;
9789
9790 if (pci_channel_offline(pdev)) {
9791 wait_event_timeout(ioa_cfg->eeh_wait_q,
9792 !pci_channel_offline(pdev),
9793 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
9794 pci_restore_state(pdev);
9795 }
9796 }
9797
ipr_enable_msix(struct ipr_ioa_cfg * ioa_cfg)9798 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9799 {
9800 struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9801 int i, vectors;
9802
9803 for (i = 0; i < ARRAY_SIZE(entries); ++i)
9804 entries[i].entry = i;
9805
9806 vectors = pci_enable_msix_range(ioa_cfg->pdev,
9807 entries, 1, ipr_number_of_msix);
9808 if (vectors < 0) {
9809 ipr_wait_for_pci_err_recovery(ioa_cfg);
9810 return vectors;
9811 }
9812
9813 for (i = 0; i < vectors; i++)
9814 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9815 ioa_cfg->nvectors = vectors;
9816
9817 return 0;
9818 }
9819
ipr_enable_msi(struct ipr_ioa_cfg * ioa_cfg)9820 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9821 {
9822 int i, vectors;
9823
9824 vectors = pci_enable_msi_range(ioa_cfg->pdev, 1, ipr_number_of_msix);
9825 if (vectors < 0) {
9826 ipr_wait_for_pci_err_recovery(ioa_cfg);
9827 return vectors;
9828 }
9829
9830 for (i = 0; i < vectors; i++)
9831 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9832 ioa_cfg->nvectors = vectors;
9833
9834 return 0;
9835 }
9836
name_msi_vectors(struct ipr_ioa_cfg * ioa_cfg)9837 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9838 {
9839 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9840
9841 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9842 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9843 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9844 ioa_cfg->vectors_info[vec_idx].
9845 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9846 }
9847 }
9848
ipr_request_other_msi_irqs(struct ipr_ioa_cfg * ioa_cfg)9849 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9850 {
9851 int i, rc;
9852
9853 for (i = 1; i < ioa_cfg->nvectors; i++) {
9854 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9855 ipr_isr_mhrrq,
9856 0,
9857 ioa_cfg->vectors_info[i].desc,
9858 &ioa_cfg->hrrq[i]);
9859 if (rc) {
9860 while (--i >= 0)
9861 free_irq(ioa_cfg->vectors_info[i].vec,
9862 &ioa_cfg->hrrq[i]);
9863 return rc;
9864 }
9865 }
9866 return 0;
9867 }
9868
9869 /**
9870 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9871 * @pdev: PCI device struct
9872 *
9873 * Description: Simply set the msi_received flag to 1 indicating that
9874 * Message Signaled Interrupts are supported.
9875 *
9876 * Return value:
9877 * 0 on success / non-zero on failure
9878 **/
ipr_test_intr(int irq,void * devp)9879 static irqreturn_t ipr_test_intr(int irq, void *devp)
9880 {
9881 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9882 unsigned long lock_flags = 0;
9883 irqreturn_t rc = IRQ_HANDLED;
9884
9885 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9886 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9887
9888 ioa_cfg->msi_received = 1;
9889 wake_up(&ioa_cfg->msi_wait_q);
9890
9891 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9892 return rc;
9893 }
9894
9895 /**
9896 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9897 * @pdev: PCI device struct
9898 *
9899 * Description: The return value from pci_enable_msi_range() can not always be
9900 * trusted. This routine sets up and initiates a test interrupt to determine
9901 * if the interrupt is received via the ipr_test_intr() service routine.
9902 * If the tests fails, the driver will fall back to LSI.
9903 *
9904 * Return value:
9905 * 0 on success / non-zero on failure
9906 **/
ipr_test_msi(struct ipr_ioa_cfg * ioa_cfg,struct pci_dev * pdev)9907 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9908 {
9909 int rc;
9910 volatile u32 int_reg;
9911 unsigned long lock_flags = 0;
9912
9913 ENTER;
9914
9915 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9916 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9917 ioa_cfg->msi_received = 0;
9918 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9919 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9920 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9921 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9922
9923 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9924 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9925 else
9926 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9927 if (rc) {
9928 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9929 return rc;
9930 } else if (ipr_debug)
9931 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9932
9933 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9934 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9935 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9936 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9937 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9938
9939 if (!ioa_cfg->msi_received) {
9940 /* MSI test failed */
9941 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9942 rc = -EOPNOTSUPP;
9943 } else if (ipr_debug)
9944 dev_info(&pdev->dev, "MSI test succeeded.\n");
9945
9946 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9947
9948 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9949 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9950 else
9951 free_irq(pdev->irq, ioa_cfg);
9952
9953 LEAVE;
9954
9955 return rc;
9956 }
9957
9958 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9959 * @pdev: PCI device struct
9960 * @dev_id: PCI device id struct
9961 *
9962 * Return value:
9963 * 0 on success / non-zero on failure
9964 **/
ipr_probe_ioa(struct pci_dev * pdev,const struct pci_device_id * dev_id)9965 static int ipr_probe_ioa(struct pci_dev *pdev,
9966 const struct pci_device_id *dev_id)
9967 {
9968 struct ipr_ioa_cfg *ioa_cfg;
9969 struct Scsi_Host *host;
9970 unsigned long ipr_regs_pci;
9971 void __iomem *ipr_regs;
9972 int rc = PCIBIOS_SUCCESSFUL;
9973 volatile u32 mask, uproc, interrupts;
9974 unsigned long lock_flags, driver_lock_flags;
9975
9976 ENTER;
9977
9978 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9979 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9980
9981 if (!host) {
9982 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9983 rc = -ENOMEM;
9984 goto out;
9985 }
9986
9987 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9988 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9989 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9990
9991 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9992
9993 if (!ioa_cfg->ipr_chip) {
9994 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9995 dev_id->vendor, dev_id->device);
9996 goto out_scsi_host_put;
9997 }
9998
9999 /* set SIS 32 or SIS 64 */
10000 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
10001 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
10002 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
10003 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10004
10005 if (ipr_transop_timeout)
10006 ioa_cfg->transop_timeout = ipr_transop_timeout;
10007 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10008 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10009 else
10010 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10011
10012 ioa_cfg->revid = pdev->revision;
10013
10014 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10015
10016 ipr_regs_pci = pci_resource_start(pdev, 0);
10017
10018 rc = pci_request_regions(pdev, IPR_NAME);
10019 if (rc < 0) {
10020 dev_err(&pdev->dev,
10021 "Couldn't register memory range of registers\n");
10022 goto out_scsi_host_put;
10023 }
10024
10025 rc = pci_enable_device(pdev);
10026
10027 if (rc || pci_channel_offline(pdev)) {
10028 if (pci_channel_offline(pdev)) {
10029 ipr_wait_for_pci_err_recovery(ioa_cfg);
10030 rc = pci_enable_device(pdev);
10031 }
10032
10033 if (rc) {
10034 dev_err(&pdev->dev, "Cannot enable adapter\n");
10035 ipr_wait_for_pci_err_recovery(ioa_cfg);
10036 goto out_release_regions;
10037 }
10038 }
10039
10040 ipr_regs = pci_ioremap_bar(pdev, 0);
10041
10042 if (!ipr_regs) {
10043 dev_err(&pdev->dev,
10044 "Couldn't map memory range of registers\n");
10045 rc = -ENOMEM;
10046 goto out_disable;
10047 }
10048
10049 ioa_cfg->hdw_dma_regs = ipr_regs;
10050 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10051 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10052
10053 ipr_init_regs(ioa_cfg);
10054
10055 if (ioa_cfg->sis64) {
10056 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10057 if (rc < 0) {
10058 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10059 rc = dma_set_mask_and_coherent(&pdev->dev,
10060 DMA_BIT_MASK(32));
10061 }
10062 } else
10063 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10064
10065 if (rc < 0) {
10066 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10067 goto cleanup_nomem;
10068 }
10069
10070 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10071 ioa_cfg->chip_cfg->cache_line_size);
10072
10073 if (rc != PCIBIOS_SUCCESSFUL) {
10074 dev_err(&pdev->dev, "Write of cache line size failed\n");
10075 ipr_wait_for_pci_err_recovery(ioa_cfg);
10076 rc = -EIO;
10077 goto cleanup_nomem;
10078 }
10079
10080 /* Issue MMIO read to ensure card is not in EEH */
10081 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10082 ipr_wait_for_pci_err_recovery(ioa_cfg);
10083
10084 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10085 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10086 IPR_MAX_MSIX_VECTORS);
10087 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10088 }
10089
10090 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10091 ipr_enable_msix(ioa_cfg) == 0)
10092 ioa_cfg->intr_flag = IPR_USE_MSIX;
10093 else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
10094 ipr_enable_msi(ioa_cfg) == 0)
10095 ioa_cfg->intr_flag = IPR_USE_MSI;
10096 else {
10097 ioa_cfg->intr_flag = IPR_USE_LSI;
10098 ioa_cfg->nvectors = 1;
10099 dev_info(&pdev->dev, "Cannot enable MSI.\n");
10100 }
10101
10102 pci_set_master(pdev);
10103
10104 if (pci_channel_offline(pdev)) {
10105 ipr_wait_for_pci_err_recovery(ioa_cfg);
10106 pci_set_master(pdev);
10107 if (pci_channel_offline(pdev)) {
10108 rc = -EIO;
10109 goto out_msi_disable;
10110 }
10111 }
10112
10113 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
10114 ioa_cfg->intr_flag == IPR_USE_MSIX) {
10115 rc = ipr_test_msi(ioa_cfg, pdev);
10116 if (rc == -EOPNOTSUPP) {
10117 ipr_wait_for_pci_err_recovery(ioa_cfg);
10118 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
10119 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
10120 pci_disable_msi(pdev);
10121 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
10122 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
10123 pci_disable_msix(pdev);
10124 }
10125
10126 ioa_cfg->intr_flag = IPR_USE_LSI;
10127 ioa_cfg->nvectors = 1;
10128 }
10129 else if (rc)
10130 goto out_msi_disable;
10131 else {
10132 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10133 dev_info(&pdev->dev,
10134 "Request for %d MSIs succeeded with starting IRQ: %d\n",
10135 ioa_cfg->nvectors, pdev->irq);
10136 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10137 dev_info(&pdev->dev,
10138 "Request for %d MSIXs succeeded.",
10139 ioa_cfg->nvectors);
10140 }
10141 }
10142
10143 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10144 (unsigned int)num_online_cpus(),
10145 (unsigned int)IPR_MAX_HRRQ_NUM);
10146
10147 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10148 goto out_msi_disable;
10149
10150 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10151 goto out_msi_disable;
10152
10153 rc = ipr_alloc_mem(ioa_cfg);
10154 if (rc < 0) {
10155 dev_err(&pdev->dev,
10156 "Couldn't allocate enough memory for device driver!\n");
10157 goto out_msi_disable;
10158 }
10159
10160 /* Save away PCI config space for use following IOA reset */
10161 rc = pci_save_state(pdev);
10162
10163 if (rc != PCIBIOS_SUCCESSFUL) {
10164 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10165 rc = -EIO;
10166 goto cleanup_nolog;
10167 }
10168
10169 /*
10170 * If HRRQ updated interrupt is not masked, or reset alert is set,
10171 * the card is in an unknown state and needs a hard reset
10172 */
10173 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10174 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10175 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10176 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10177 ioa_cfg->needs_hard_reset = 1;
10178 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10179 ioa_cfg->needs_hard_reset = 1;
10180 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10181 ioa_cfg->ioa_unit_checked = 1;
10182
10183 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10184 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10186
10187 if (ioa_cfg->intr_flag == IPR_USE_MSI
10188 || ioa_cfg->intr_flag == IPR_USE_MSIX) {
10189 name_msi_vectors(ioa_cfg);
10190 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
10191 0,
10192 ioa_cfg->vectors_info[0].desc,
10193 &ioa_cfg->hrrq[0]);
10194 if (!rc)
10195 rc = ipr_request_other_msi_irqs(ioa_cfg);
10196 } else {
10197 rc = request_irq(pdev->irq, ipr_isr,
10198 IRQF_SHARED,
10199 IPR_NAME, &ioa_cfg->hrrq[0]);
10200 }
10201 if (rc) {
10202 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10203 pdev->irq, rc);
10204 goto cleanup_nolog;
10205 }
10206
10207 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10208 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10209 ioa_cfg->needs_warm_reset = 1;
10210 ioa_cfg->reset = ipr_reset_slot_reset;
10211
10212 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10213 WQ_MEM_RECLAIM, host->host_no);
10214
10215 if (!ioa_cfg->reset_work_q) {
10216 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10217 goto out_free_irq;
10218 }
10219 } else
10220 ioa_cfg->reset = ipr_reset_start_bist;
10221
10222 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10223 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10224 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10225
10226 LEAVE;
10227 out:
10228 return rc;
10229
10230 out_free_irq:
10231 ipr_free_irqs(ioa_cfg);
10232 cleanup_nolog:
10233 ipr_free_mem(ioa_cfg);
10234 out_msi_disable:
10235 ipr_wait_for_pci_err_recovery(ioa_cfg);
10236 if (ioa_cfg->intr_flag == IPR_USE_MSI)
10237 pci_disable_msi(pdev);
10238 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
10239 pci_disable_msix(pdev);
10240 cleanup_nomem:
10241 iounmap(ipr_regs);
10242 out_disable:
10243 pci_disable_device(pdev);
10244 out_release_regions:
10245 pci_release_regions(pdev);
10246 out_scsi_host_put:
10247 scsi_host_put(host);
10248 goto out;
10249 }
10250
10251 /**
10252 * ipr_initiate_ioa_bringdown - Bring down an adapter
10253 * @ioa_cfg: ioa config struct
10254 * @shutdown_type: shutdown type
10255 *
10256 * Description: This function will initiate bringing down the adapter.
10257 * This consists of issuing an IOA shutdown to the adapter
10258 * to flush the cache, and running BIST.
10259 * If the caller needs to wait on the completion of the reset,
10260 * the caller must sleep on the reset_wait_q.
10261 *
10262 * Return value:
10263 * none
10264 **/
ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg * ioa_cfg,enum ipr_shutdown_type shutdown_type)10265 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10266 enum ipr_shutdown_type shutdown_type)
10267 {
10268 ENTER;
10269 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10270 ioa_cfg->sdt_state = ABORT_DUMP;
10271 ioa_cfg->reset_retries = 0;
10272 ioa_cfg->in_ioa_bringdown = 1;
10273 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10274 LEAVE;
10275 }
10276
10277 /**
10278 * __ipr_remove - Remove a single adapter
10279 * @pdev: pci device struct
10280 *
10281 * Adapter hot plug remove entry point.
10282 *
10283 * Return value:
10284 * none
10285 **/
__ipr_remove(struct pci_dev * pdev)10286 static void __ipr_remove(struct pci_dev *pdev)
10287 {
10288 unsigned long host_lock_flags = 0;
10289 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10290 int i;
10291 unsigned long driver_lock_flags;
10292 ENTER;
10293
10294 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10295 while (ioa_cfg->in_reset_reload) {
10296 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10297 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10298 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10299 }
10300
10301 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10302 spin_lock(&ioa_cfg->hrrq[i]._lock);
10303 ioa_cfg->hrrq[i].removing_ioa = 1;
10304 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10305 }
10306 wmb();
10307 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10308
10309 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10310 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10311 flush_work(&ioa_cfg->work_q);
10312 if (ioa_cfg->reset_work_q)
10313 flush_workqueue(ioa_cfg->reset_work_q);
10314 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10315 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10316
10317 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10318 list_del(&ioa_cfg->queue);
10319 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10320
10321 if (ioa_cfg->sdt_state == ABORT_DUMP)
10322 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10323 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10324
10325 ipr_free_all_resources(ioa_cfg);
10326
10327 LEAVE;
10328 }
10329
10330 /**
10331 * ipr_remove - IOA hot plug remove entry point
10332 * @pdev: pci device struct
10333 *
10334 * Adapter hot plug remove entry point.
10335 *
10336 * Return value:
10337 * none
10338 **/
ipr_remove(struct pci_dev * pdev)10339 static void ipr_remove(struct pci_dev *pdev)
10340 {
10341 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10342
10343 ENTER;
10344
10345 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10346 &ipr_trace_attr);
10347 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10348 &ipr_dump_attr);
10349 scsi_remove_host(ioa_cfg->host);
10350
10351 __ipr_remove(pdev);
10352
10353 LEAVE;
10354 }
10355
10356 /**
10357 * ipr_probe - Adapter hot plug add entry point
10358 *
10359 * Return value:
10360 * 0 on success / non-zero on failure
10361 **/
ipr_probe(struct pci_dev * pdev,const struct pci_device_id * dev_id)10362 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10363 {
10364 struct ipr_ioa_cfg *ioa_cfg;
10365 int rc, i;
10366
10367 rc = ipr_probe_ioa(pdev, dev_id);
10368
10369 if (rc)
10370 return rc;
10371
10372 ioa_cfg = pci_get_drvdata(pdev);
10373 rc = ipr_probe_ioa_part2(ioa_cfg);
10374
10375 if (rc) {
10376 __ipr_remove(pdev);
10377 return rc;
10378 }
10379
10380 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10381
10382 if (rc) {
10383 __ipr_remove(pdev);
10384 return rc;
10385 }
10386
10387 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10388 &ipr_trace_attr);
10389
10390 if (rc) {
10391 scsi_remove_host(ioa_cfg->host);
10392 __ipr_remove(pdev);
10393 return rc;
10394 }
10395
10396 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10397 &ipr_dump_attr);
10398
10399 if (rc) {
10400 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10401 &ipr_trace_attr);
10402 scsi_remove_host(ioa_cfg->host);
10403 __ipr_remove(pdev);
10404 return rc;
10405 }
10406
10407 scsi_scan_host(ioa_cfg->host);
10408 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10409
10410 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10411 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10412 blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
10413 ioa_cfg->iopoll_weight, ipr_iopoll);
10414 blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
10415 }
10416 }
10417
10418 schedule_work(&ioa_cfg->work_q);
10419 return 0;
10420 }
10421
10422 /**
10423 * ipr_shutdown - Shutdown handler.
10424 * @pdev: pci device struct
10425 *
10426 * This function is invoked upon system shutdown/reboot. It will issue
10427 * an adapter shutdown to the adapter to flush the write cache.
10428 *
10429 * Return value:
10430 * none
10431 **/
ipr_shutdown(struct pci_dev * pdev)10432 static void ipr_shutdown(struct pci_dev *pdev)
10433 {
10434 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10435 unsigned long lock_flags = 0;
10436 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10437 int i;
10438
10439 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10440 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10441 ioa_cfg->iopoll_weight = 0;
10442 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10443 blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
10444 }
10445
10446 while (ioa_cfg->in_reset_reload) {
10447 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10448 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10449 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10450 }
10451
10452 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10453 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10454
10455 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10456 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10457 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10458 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10459 ipr_free_irqs(ioa_cfg);
10460 pci_disable_device(ioa_cfg->pdev);
10461 }
10462 }
10463
10464 static struct pci_device_id ipr_pci_table[] = {
10465 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10466 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10467 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10468 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10469 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10470 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10471 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10472 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10473 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10474 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10475 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10476 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10477 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10478 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10479 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10480 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10481 IPR_USE_LONG_TRANSOP_TIMEOUT },
10482 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10483 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10484 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10485 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10486 IPR_USE_LONG_TRANSOP_TIMEOUT },
10487 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10488 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10489 IPR_USE_LONG_TRANSOP_TIMEOUT },
10490 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10491 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10492 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10493 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10494 IPR_USE_LONG_TRANSOP_TIMEOUT},
10495 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10496 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10497 IPR_USE_LONG_TRANSOP_TIMEOUT },
10498 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10499 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10500 IPR_USE_LONG_TRANSOP_TIMEOUT },
10501 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10502 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10503 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10504 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10505 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10506 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10507 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10508 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10509 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10510 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10511 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10512 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10513 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10514 IPR_USE_LONG_TRANSOP_TIMEOUT },
10515 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10516 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10517 IPR_USE_LONG_TRANSOP_TIMEOUT },
10518 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10519 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10520 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10521 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10522 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10523 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10524 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10525 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10526 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10527 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10528 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10529 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10530 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10531 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10532 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10533 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10534 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10535 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10536 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10537 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10538 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10539 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10540 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10541 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10542 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10543 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10544 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10545 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10546 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10547 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10548 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10549 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10550 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10551 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10552 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10553 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10554 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10555 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10556 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10557 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10558 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10559 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10560 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10561 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10562 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10563 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10564 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10565 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10566 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10567 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10568 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10569 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10570 { }
10571 };
10572 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10573
10574 static const struct pci_error_handlers ipr_err_handler = {
10575 .error_detected = ipr_pci_error_detected,
10576 .mmio_enabled = ipr_pci_mmio_enabled,
10577 .slot_reset = ipr_pci_slot_reset,
10578 };
10579
10580 static struct pci_driver ipr_driver = {
10581 .name = IPR_NAME,
10582 .id_table = ipr_pci_table,
10583 .probe = ipr_probe,
10584 .remove = ipr_remove,
10585 .shutdown = ipr_shutdown,
10586 .err_handler = &ipr_err_handler,
10587 };
10588
10589 /**
10590 * ipr_halt_done - Shutdown prepare completion
10591 *
10592 * Return value:
10593 * none
10594 **/
ipr_halt_done(struct ipr_cmnd * ipr_cmd)10595 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10596 {
10597 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10598 }
10599
10600 /**
10601 * ipr_halt - Issue shutdown prepare to all adapters
10602 *
10603 * Return value:
10604 * NOTIFY_OK on success / NOTIFY_DONE on failure
10605 **/
ipr_halt(struct notifier_block * nb,ulong event,void * buf)10606 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10607 {
10608 struct ipr_cmnd *ipr_cmd;
10609 struct ipr_ioa_cfg *ioa_cfg;
10610 unsigned long flags = 0, driver_lock_flags;
10611
10612 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10613 return NOTIFY_DONE;
10614
10615 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10616
10617 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10618 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10619 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10620 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10621 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10622 continue;
10623 }
10624
10625 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10626 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10627 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10628 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10629 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10630
10631 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10632 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10633 }
10634 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10635
10636 return NOTIFY_OK;
10637 }
10638
10639 static struct notifier_block ipr_notifier = {
10640 ipr_halt, NULL, 0
10641 };
10642
10643 /**
10644 * ipr_init - Module entry point
10645 *
10646 * Return value:
10647 * 0 on success / negative value on failure
10648 **/
ipr_init(void)10649 static int __init ipr_init(void)
10650 {
10651 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10652 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10653
10654 register_reboot_notifier(&ipr_notifier);
10655 return pci_register_driver(&ipr_driver);
10656 }
10657
10658 /**
10659 * ipr_exit - Module unload
10660 *
10661 * Module unload entry point.
10662 *
10663 * Return value:
10664 * none
10665 **/
ipr_exit(void)10666 static void __exit ipr_exit(void)
10667 {
10668 unregister_reboot_notifier(&ipr_notifier);
10669 pci_unregister_driver(&ipr_driver);
10670 }
10671
10672 module_init(ipr_init);
10673 module_exit(ipr_exit);
10674