1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * ipr.c -- driver for IBM Power Linux RAID adapters
4 *
5 * Written By: Brian King <brking@us.ibm.com>, IBM Corporation
6 *
7 * Copyright (C) 2003, 2004 IBM Corporation
8 */
9
10 /*
11 * Notes:
12 *
13 * This driver is used to control the following SCSI adapters:
14 *
15 * IBM iSeries: 5702, 5703, 2780, 5709, 570A, 570B
16 *
17 * IBM pSeries: PCI-X Dual Channel Ultra 320 SCSI RAID Adapter
18 * PCI-X Dual Channel Ultra 320 SCSI Adapter
19 * PCI-X Dual Channel Ultra 320 SCSI RAID Enablement Card
20 * Embedded SCSI adapter on p615 and p655 systems
21 *
22 * Supported Hardware Features:
23 * - Ultra 320 SCSI controller
24 * - PCI-X host interface
25 * - Embedded PowerPC RISC Processor and Hardware XOR DMA Engine
26 * - Non-Volatile Write Cache
27 * - Supports attachment of non-RAID disks, tape, and optical devices
28 * - RAID Levels 0, 5, 10
29 * - Hot spare
30 * - Background Parity Checking
31 * - Background Data Scrubbing
32 * - Ability to increase the capacity of an existing RAID 5 disk array
33 * by adding disks
34 *
35 * Driver Features:
36 * - Tagged command queuing
37 * - Adapter microcode download
38 * - PCI hot plug
39 * - SCSI device hot plug
40 *
41 */
42
43 #include <linux/fs.h>
44 #include <linux/init.h>
45 #include <linux/types.h>
46 #include <linux/errno.h>
47 #include <linux/kernel.h>
48 #include <linux/slab.h>
49 #include <linux/vmalloc.h>
50 #include <linux/ioport.h>
51 #include <linux/delay.h>
52 #include <linux/pci.h>
53 #include <linux/wait.h>
54 #include <linux/spinlock.h>
55 #include <linux/sched.h>
56 #include <linux/interrupt.h>
57 #include <linux/blkdev.h>
58 #include <linux/firmware.h>
59 #include <linux/module.h>
60 #include <linux/moduleparam.h>
61 #include <linux/libata.h>
62 #include <linux/hdreg.h>
63 #include <linux/reboot.h>
64 #include <linux/stringify.h>
65 #include <asm/io.h>
66 #include <asm/irq.h>
67 #include <asm/processor.h>
68 #include <scsi/scsi.h>
69 #include <scsi/scsi_host.h>
70 #include <scsi/scsi_tcq.h>
71 #include <scsi/scsi_eh.h>
72 #include <scsi/scsi_cmnd.h>
73 #include "ipr.h"
74
75 /*
76 * Global Data
77 */
78 static LIST_HEAD(ipr_ioa_head);
79 static unsigned int ipr_log_level = IPR_DEFAULT_LOG_LEVEL;
80 static unsigned int ipr_max_speed = 1;
81 static int ipr_testmode = 0;
82 static unsigned int ipr_fastfail = 0;
83 static unsigned int ipr_transop_timeout = 0;
84 static unsigned int ipr_debug = 0;
85 static unsigned int ipr_max_devs = IPR_DEFAULT_SIS64_DEVS;
86 static unsigned int ipr_dual_ioa_raid = 1;
87 static unsigned int ipr_number_of_msix = 16;
88 static unsigned int ipr_fast_reboot;
89 static DEFINE_SPINLOCK(ipr_driver_lock);
90
91 /* This table describes the differences between DMA controller chips */
92 static const struct ipr_chip_cfg_t ipr_chip_cfg[] = {
93 { /* Gemstone, Citrine, Obsidian, and Obsidian-E */
94 .mailbox = 0x0042C,
95 .max_cmds = 100,
96 .cache_line_size = 0x20,
97 .clear_isr = 1,
98 .iopoll_weight = 0,
99 {
100 .set_interrupt_mask_reg = 0x0022C,
101 .clr_interrupt_mask_reg = 0x00230,
102 .clr_interrupt_mask_reg32 = 0x00230,
103 .sense_interrupt_mask_reg = 0x0022C,
104 .sense_interrupt_mask_reg32 = 0x0022C,
105 .clr_interrupt_reg = 0x00228,
106 .clr_interrupt_reg32 = 0x00228,
107 .sense_interrupt_reg = 0x00224,
108 .sense_interrupt_reg32 = 0x00224,
109 .ioarrin_reg = 0x00404,
110 .sense_uproc_interrupt_reg = 0x00214,
111 .sense_uproc_interrupt_reg32 = 0x00214,
112 .set_uproc_interrupt_reg = 0x00214,
113 .set_uproc_interrupt_reg32 = 0x00214,
114 .clr_uproc_interrupt_reg = 0x00218,
115 .clr_uproc_interrupt_reg32 = 0x00218
116 }
117 },
118 { /* Snipe and Scamp */
119 .mailbox = 0x0052C,
120 .max_cmds = 100,
121 .cache_line_size = 0x20,
122 .clear_isr = 1,
123 .iopoll_weight = 0,
124 {
125 .set_interrupt_mask_reg = 0x00288,
126 .clr_interrupt_mask_reg = 0x0028C,
127 .clr_interrupt_mask_reg32 = 0x0028C,
128 .sense_interrupt_mask_reg = 0x00288,
129 .sense_interrupt_mask_reg32 = 0x00288,
130 .clr_interrupt_reg = 0x00284,
131 .clr_interrupt_reg32 = 0x00284,
132 .sense_interrupt_reg = 0x00280,
133 .sense_interrupt_reg32 = 0x00280,
134 .ioarrin_reg = 0x00504,
135 .sense_uproc_interrupt_reg = 0x00290,
136 .sense_uproc_interrupt_reg32 = 0x00290,
137 .set_uproc_interrupt_reg = 0x00290,
138 .set_uproc_interrupt_reg32 = 0x00290,
139 .clr_uproc_interrupt_reg = 0x00294,
140 .clr_uproc_interrupt_reg32 = 0x00294
141 }
142 },
143 { /* CRoC */
144 .mailbox = 0x00044,
145 .max_cmds = 1000,
146 .cache_line_size = 0x20,
147 .clear_isr = 0,
148 .iopoll_weight = 64,
149 {
150 .set_interrupt_mask_reg = 0x00010,
151 .clr_interrupt_mask_reg = 0x00018,
152 .clr_interrupt_mask_reg32 = 0x0001C,
153 .sense_interrupt_mask_reg = 0x00010,
154 .sense_interrupt_mask_reg32 = 0x00014,
155 .clr_interrupt_reg = 0x00008,
156 .clr_interrupt_reg32 = 0x0000C,
157 .sense_interrupt_reg = 0x00000,
158 .sense_interrupt_reg32 = 0x00004,
159 .ioarrin_reg = 0x00070,
160 .sense_uproc_interrupt_reg = 0x00020,
161 .sense_uproc_interrupt_reg32 = 0x00024,
162 .set_uproc_interrupt_reg = 0x00020,
163 .set_uproc_interrupt_reg32 = 0x00024,
164 .clr_uproc_interrupt_reg = 0x00028,
165 .clr_uproc_interrupt_reg32 = 0x0002C,
166 .init_feedback_reg = 0x0005C,
167 .dump_addr_reg = 0x00064,
168 .dump_data_reg = 0x00068,
169 .endian_swap_reg = 0x00084
170 }
171 },
172 };
173
174 static const struct ipr_chip_t ipr_chip[] = {
175 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
176 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
177 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
178 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
179 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E, true, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[0] },
180 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
181 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP, false, IPR_SIS32, IPR_PCI_CFG, &ipr_chip_cfg[1] },
182 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
183 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] },
184 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE, true, IPR_SIS64, IPR_MMIO, &ipr_chip_cfg[2] }
185 };
186
187 static int ipr_max_bus_speeds[] = {
188 IPR_80MBs_SCSI_RATE, IPR_U160_SCSI_RATE, IPR_U320_SCSI_RATE
189 };
190
191 MODULE_AUTHOR("Brian King <brking@us.ibm.com>");
192 MODULE_DESCRIPTION("IBM Power RAID SCSI Adapter Driver");
193 module_param_named(max_speed, ipr_max_speed, uint, 0);
194 MODULE_PARM_DESC(max_speed, "Maximum bus speed (0-2). Default: 1=U160. Speeds: 0=80 MB/s, 1=U160, 2=U320");
195 module_param_named(log_level, ipr_log_level, uint, 0);
196 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver");
197 module_param_named(testmode, ipr_testmode, int, 0);
198 MODULE_PARM_DESC(testmode, "DANGEROUS!!! Allows unsupported configurations");
199 module_param_named(fastfail, ipr_fastfail, int, S_IRUGO | S_IWUSR);
200 MODULE_PARM_DESC(fastfail, "Reduce timeouts and retries");
201 module_param_named(transop_timeout, ipr_transop_timeout, int, 0);
202 MODULE_PARM_DESC(transop_timeout, "Time in seconds to wait for adapter to come operational (default: 300)");
203 module_param_named(debug, ipr_debug, int, S_IRUGO | S_IWUSR);
204 MODULE_PARM_DESC(debug, "Enable device driver debugging logging. Set to 1 to enable. (default: 0)");
205 module_param_named(dual_ioa_raid, ipr_dual_ioa_raid, int, 0);
206 MODULE_PARM_DESC(dual_ioa_raid, "Enable dual adapter RAID support. Set to 1 to enable. (default: 1)");
207 module_param_named(max_devs, ipr_max_devs, int, 0);
208 MODULE_PARM_DESC(max_devs, "Specify the maximum number of physical devices. "
209 "[Default=" __stringify(IPR_DEFAULT_SIS64_DEVS) "]");
210 module_param_named(number_of_msix, ipr_number_of_msix, int, 0);
211 MODULE_PARM_DESC(number_of_msix, "Specify the number of MSIX interrupts to use on capable adapters (1 - 16). (default:16)");
212 module_param_named(fast_reboot, ipr_fast_reboot, int, S_IRUGO | S_IWUSR);
213 MODULE_PARM_DESC(fast_reboot, "Skip adapter shutdown during reboot. Set to 1 to enable. (default: 0)");
214 MODULE_LICENSE("GPL");
215 MODULE_VERSION(IPR_DRIVER_VERSION);
216
217 /* A constant array of IOASCs/URCs/Error Messages */
218 static const
219 struct ipr_error_table_t ipr_error_table[] = {
220 {0x00000000, 1, IPR_DEFAULT_LOG_LEVEL,
221 "8155: An unknown error was received"},
222 {0x00330000, 0, 0,
223 "Soft underlength error"},
224 {0x005A0000, 0, 0,
225 "Command to be cancelled not found"},
226 {0x00808000, 0, 0,
227 "Qualified success"},
228 {0x01080000, 1, IPR_DEFAULT_LOG_LEVEL,
229 "FFFE: Soft device bus error recovered by the IOA"},
230 {0x01088100, 0, IPR_DEFAULT_LOG_LEVEL,
231 "4101: Soft device bus fabric error"},
232 {0x01100100, 0, IPR_DEFAULT_LOG_LEVEL,
233 "FFFC: Logical block guard error recovered by the device"},
234 {0x01100300, 0, IPR_DEFAULT_LOG_LEVEL,
235 "FFFC: Logical block reference tag error recovered by the device"},
236 {0x01108300, 0, IPR_DEFAULT_LOG_LEVEL,
237 "4171: Recovered scatter list tag / sequence number error"},
238 {0x01109000, 0, IPR_DEFAULT_LOG_LEVEL,
239 "FF3D: Recovered logical block CRC error on IOA to Host transfer"},
240 {0x01109200, 0, IPR_DEFAULT_LOG_LEVEL,
241 "4171: Recovered logical block sequence number error on IOA to Host transfer"},
242 {0x0110A000, 0, IPR_DEFAULT_LOG_LEVEL,
243 "FFFD: Recovered logical block reference tag error detected by the IOA"},
244 {0x0110A100, 0, IPR_DEFAULT_LOG_LEVEL,
245 "FFFD: Logical block guard error recovered by the IOA"},
246 {0x01170600, 0, IPR_DEFAULT_LOG_LEVEL,
247 "FFF9: Device sector reassign successful"},
248 {0x01170900, 0, IPR_DEFAULT_LOG_LEVEL,
249 "FFF7: Media error recovered by device rewrite procedures"},
250 {0x01180200, 0, IPR_DEFAULT_LOG_LEVEL,
251 "7001: IOA sector reassignment successful"},
252 {0x01180500, 0, IPR_DEFAULT_LOG_LEVEL,
253 "FFF9: Soft media error. Sector reassignment recommended"},
254 {0x01180600, 0, IPR_DEFAULT_LOG_LEVEL,
255 "FFF7: Media error recovered by IOA rewrite procedures"},
256 {0x01418000, 0, IPR_DEFAULT_LOG_LEVEL,
257 "FF3D: Soft PCI bus error recovered by the IOA"},
258 {0x01440000, 1, IPR_DEFAULT_LOG_LEVEL,
259 "FFF6: Device hardware error recovered by the IOA"},
260 {0x01448100, 0, IPR_DEFAULT_LOG_LEVEL,
261 "FFF6: Device hardware error recovered by the device"},
262 {0x01448200, 1, IPR_DEFAULT_LOG_LEVEL,
263 "FF3D: Soft IOA error recovered by the IOA"},
264 {0x01448300, 0, IPR_DEFAULT_LOG_LEVEL,
265 "FFFA: Undefined device response recovered by the IOA"},
266 {0x014A0000, 1, IPR_DEFAULT_LOG_LEVEL,
267 "FFF6: Device bus error, message or command phase"},
268 {0x014A8000, 0, IPR_DEFAULT_LOG_LEVEL,
269 "FFFE: Task Management Function failed"},
270 {0x015D0000, 0, IPR_DEFAULT_LOG_LEVEL,
271 "FFF6: Failure prediction threshold exceeded"},
272 {0x015D9200, 0, IPR_DEFAULT_LOG_LEVEL,
273 "8009: Impending cache battery pack failure"},
274 {0x02040100, 0, 0,
275 "Logical Unit in process of becoming ready"},
276 {0x02040200, 0, 0,
277 "Initializing command required"},
278 {0x02040400, 0, 0,
279 "34FF: Disk device format in progress"},
280 {0x02040C00, 0, 0,
281 "Logical unit not accessible, target port in unavailable state"},
282 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
283 "9070: IOA requested reset"},
284 {0x023F0000, 0, 0,
285 "Synchronization required"},
286 {0x02408500, 0, 0,
287 "IOA microcode download required"},
288 {0x02408600, 0, 0,
289 "Device bus connection is prohibited by host"},
290 {0x024E0000, 0, 0,
291 "No ready, IOA shutdown"},
292 {0x025A0000, 0, 0,
293 "Not ready, IOA has been shutdown"},
294 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
295 "3020: Storage subsystem configuration error"},
296 {0x03110B00, 0, 0,
297 "FFF5: Medium error, data unreadable, recommend reassign"},
298 {0x03110C00, 0, 0,
299 "7000: Medium error, data unreadable, do not reassign"},
300 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
301 "FFF3: Disk media format bad"},
302 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
303 "3002: Addressed device failed to respond to selection"},
304 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
305 "3100: Device bus error"},
306 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
307 "3109: IOA timed out a device command"},
308 {0x04088000, 0, 0,
309 "3120: SCSI bus is not operational"},
310 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
311 "4100: Hard device bus fabric error"},
312 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
313 "310C: Logical block guard error detected by the device"},
314 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
315 "310C: Logical block reference tag error detected by the device"},
316 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
317 "4170: Scatter list tag / sequence number error"},
318 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
319 "8150: Logical block CRC error on IOA to Host transfer"},
320 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
321 "4170: Logical block sequence number error on IOA to Host transfer"},
322 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
323 "310D: Logical block reference tag error detected by the IOA"},
324 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
325 "310D: Logical block guard error detected by the IOA"},
326 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
327 "9000: IOA reserved area data check"},
328 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
329 "9001: IOA reserved area invalid data pattern"},
330 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
331 "9002: IOA reserved area LRC error"},
332 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
333 "Hardware Error, IOA metadata access error"},
334 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
335 "102E: Out of alternate sectors for disk storage"},
336 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
337 "FFF4: Data transfer underlength error"},
338 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
339 "FFF4: Data transfer overlength error"},
340 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
341 "3400: Logical unit failure"},
342 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
343 "FFF4: Device microcode is corrupt"},
344 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
345 "8150: PCI bus error"},
346 {0x04430000, 1, 0,
347 "Unsupported device bus message received"},
348 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
349 "FFF4: Disk device problem"},
350 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
351 "8150: Permanent IOA failure"},
352 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
353 "3010: Disk device returned wrong response to IOA"},
354 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
355 "8151: IOA microcode error"},
356 {0x04448500, 0, 0,
357 "Device bus status error"},
358 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
359 "8157: IOA error requiring IOA reset to recover"},
360 {0x04448700, 0, 0,
361 "ATA device status error"},
362 {0x04490000, 0, 0,
363 "Message reject received from the device"},
364 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
365 "8008: A permanent cache battery pack failure occurred"},
366 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
367 "9090: Disk unit has been modified after the last known status"},
368 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
369 "9081: IOA detected device error"},
370 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
371 "9082: IOA detected device error"},
372 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
373 "3110: Device bus error, message or command phase"},
374 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
375 "3110: SAS Command / Task Management Function failed"},
376 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
377 "9091: Incorrect hardware configuration change has been detected"},
378 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
379 "9073: Invalid multi-adapter configuration"},
380 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
381 "4010: Incorrect connection between cascaded expanders"},
382 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
383 "4020: Connections exceed IOA design limits"},
384 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
385 "4030: Incorrect multipath connection"},
386 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
387 "4110: Unsupported enclosure function"},
388 {0x04679800, 0, IPR_DEFAULT_LOG_LEVEL,
389 "4120: SAS cable VPD cannot be read"},
390 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
391 "FFF4: Command to logical unit failed"},
392 {0x05240000, 1, 0,
393 "Illegal request, invalid request type or request packet"},
394 {0x05250000, 0, 0,
395 "Illegal request, invalid resource handle"},
396 {0x05258000, 0, 0,
397 "Illegal request, commands not allowed to this device"},
398 {0x05258100, 0, 0,
399 "Illegal request, command not allowed to a secondary adapter"},
400 {0x05258200, 0, 0,
401 "Illegal request, command not allowed to a non-optimized resource"},
402 {0x05260000, 0, 0,
403 "Illegal request, invalid field in parameter list"},
404 {0x05260100, 0, 0,
405 "Illegal request, parameter not supported"},
406 {0x05260200, 0, 0,
407 "Illegal request, parameter value invalid"},
408 {0x052C0000, 0, 0,
409 "Illegal request, command sequence error"},
410 {0x052C8000, 1, 0,
411 "Illegal request, dual adapter support not enabled"},
412 {0x052C8100, 1, 0,
413 "Illegal request, another cable connector was physically disabled"},
414 {0x054E8000, 1, 0,
415 "Illegal request, inconsistent group id/group count"},
416 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
417 "9031: Array protection temporarily suspended, protection resuming"},
418 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
419 "9040: Array protection temporarily suspended, protection resuming"},
420 {0x060B0100, 0, IPR_DEFAULT_LOG_LEVEL,
421 "4080: IOA exceeded maximum operating temperature"},
422 {0x060B8000, 0, IPR_DEFAULT_LOG_LEVEL,
423 "4085: Service required"},
424 {0x060B8100, 0, IPR_DEFAULT_LOG_LEVEL,
425 "4086: SAS Adapter Hardware Configuration Error"},
426 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
427 "3140: Device bus not ready to ready transition"},
428 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
429 "FFFB: SCSI bus was reset"},
430 {0x06290500, 0, 0,
431 "FFFE: SCSI bus transition to single ended"},
432 {0x06290600, 0, 0,
433 "FFFE: SCSI bus transition to LVD"},
434 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
435 "FFFB: SCSI bus was reset by another initiator"},
436 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
437 "3029: A device replacement has occurred"},
438 {0x063F8300, 0, IPR_DEFAULT_LOG_LEVEL,
439 "4102: Device bus fabric performance degradation"},
440 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
441 "9051: IOA cache data exists for a missing or failed device"},
442 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
443 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
444 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
445 "9025: Disk unit is not supported at its physical location"},
446 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
447 "3020: IOA detected a SCSI bus configuration error"},
448 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
449 "3150: SCSI bus configuration error"},
450 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
451 "9074: Asymmetric advanced function disk configuration"},
452 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
453 "4040: Incomplete multipath connection between IOA and enclosure"},
454 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
455 "4041: Incomplete multipath connection between enclosure and device"},
456 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
457 "9075: Incomplete multipath connection between IOA and remote IOA"},
458 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
459 "9076: Configuration error, missing remote IOA"},
460 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
461 "4050: Enclosure does not support a required multipath function"},
462 {0x06679800, 0, IPR_DEFAULT_LOG_LEVEL,
463 "4121: Configuration error, required cable is missing"},
464 {0x06679900, 0, IPR_DEFAULT_LOG_LEVEL,
465 "4122: Cable is not plugged into the correct location on remote IOA"},
466 {0x06679A00, 0, IPR_DEFAULT_LOG_LEVEL,
467 "4123: Configuration error, invalid cable vital product data"},
468 {0x06679B00, 0, IPR_DEFAULT_LOG_LEVEL,
469 "4124: Configuration error, both cable ends are plugged into the same IOA"},
470 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
471 "4070: Logically bad block written on device"},
472 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
473 "9041: Array protection temporarily suspended"},
474 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
475 "9042: Corrupt array parity detected on specified device"},
476 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
477 "9030: Array no longer protected due to missing or failed disk unit"},
478 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
479 "9071: Link operational transition"},
480 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
481 "9072: Link not operational transition"},
482 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
483 "9032: Array exposed but still protected"},
484 {0x066B8300, 0, IPR_DEBUG_LOG_LEVEL,
485 "70DD: Device forced failed by disrupt device command"},
486 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
487 "4061: Multipath redundancy level got better"},
488 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
489 "4060: Multipath redundancy level got worse"},
490 {0x06808100, 0, IPR_DEBUG_LOG_LEVEL,
491 "9083: Device raw mode enabled"},
492 {0x06808200, 0, IPR_DEBUG_LOG_LEVEL,
493 "9084: Device raw mode disabled"},
494 {0x07270000, 0, 0,
495 "Failure due to other device"},
496 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
497 "9008: IOA does not support functions expected by devices"},
498 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
499 "9010: Cache data associated with attached devices cannot be found"},
500 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
501 "9011: Cache data belongs to devices other than those attached"},
502 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
503 "9020: Array missing 2 or more devices with only 1 device present"},
504 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
505 "9021: Array missing 2 or more devices with 2 or more devices present"},
506 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
507 "9022: Exposed array is missing a required device"},
508 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
509 "9023: Array member(s) not at required physical locations"},
510 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
511 "9024: Array not functional due to present hardware configuration"},
512 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
513 "9026: Array not functional due to present hardware configuration"},
514 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
515 "9027: Array is missing a device and parity is out of sync"},
516 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
517 "9028: Maximum number of arrays already exist"},
518 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
519 "9050: Required cache data cannot be located for a disk unit"},
520 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
521 "9052: Cache data exists for a device that has been modified"},
522 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
523 "9054: IOA resources not available due to previous problems"},
524 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
525 "9092: Disk unit requires initialization before use"},
526 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
527 "9029: Incorrect hardware configuration change has been detected"},
528 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
529 "9060: One or more disk pairs are missing from an array"},
530 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
531 "9061: One or more disks are missing from an array"},
532 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
533 "9062: One or more disks are missing from an array"},
534 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
535 "9063: Maximum number of functional arrays has been exceeded"},
536 {0x07279A00, 0, 0,
537 "Data protect, other volume set problem"},
538 {0x0B260000, 0, 0,
539 "Aborted command, invalid descriptor"},
540 {0x0B3F9000, 0, 0,
541 "Target operating conditions have changed, dual adapter takeover"},
542 {0x0B530200, 0, 0,
543 "Aborted command, medium removal prevented"},
544 {0x0B5A0000, 0, 0,
545 "Command terminated by host"},
546 {0x0B5B8000, 0, 0,
547 "Aborted command, command terminated by host"}
548 };
549
550 static const struct ipr_ses_table_entry ipr_ses_table[] = {
551 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
552 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
553 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
554 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
555 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
556 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
557 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
558 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
559 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
560 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
561 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
562 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
563 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
564 };
565
566 /*
567 * Function Prototypes
568 */
569 static int ipr_reset_alert(struct ipr_cmnd *);
570 static void ipr_process_ccn(struct ipr_cmnd *);
571 static void ipr_process_error(struct ipr_cmnd *);
572 static void ipr_reset_ioa_job(struct ipr_cmnd *);
573 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
574 enum ipr_shutdown_type);
575
576 #ifdef CONFIG_SCSI_IPR_TRACE
577 /**
578 * ipr_trc_hook - Add a trace entry to the driver trace
579 * @ipr_cmd: ipr command struct
580 * @type: trace type
581 * @add_data: additional data
582 *
583 * Return value:
584 * none
585 **/
ipr_trc_hook(struct ipr_cmnd * ipr_cmd,u8 type,u32 add_data)586 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
587 u8 type, u32 add_data)
588 {
589 struct ipr_trace_entry *trace_entry;
590 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
591 unsigned int trace_index;
592
593 trace_index = atomic_add_return(1, &ioa_cfg->trace_index) & IPR_TRACE_INDEX_MASK;
594 trace_entry = &ioa_cfg->trace[trace_index];
595 trace_entry->time = jiffies;
596 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
597 trace_entry->type = type;
598 if (ipr_cmd->ioa_cfg->sis64)
599 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
600 else
601 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
602 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
603 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
604 trace_entry->u.add_data = add_data;
605 wmb();
606 }
607 #else
608 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
609 #endif
610
611 /**
612 * ipr_lock_and_done - Acquire lock and complete command
613 * @ipr_cmd: ipr command struct
614 *
615 * Return value:
616 * none
617 **/
ipr_lock_and_done(struct ipr_cmnd * ipr_cmd)618 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
619 {
620 unsigned long lock_flags;
621 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
622
623 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
624 ipr_cmd->done(ipr_cmd);
625 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
626 }
627
628 /**
629 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
630 * @ipr_cmd: ipr command struct
631 *
632 * Return value:
633 * none
634 **/
ipr_reinit_ipr_cmnd(struct ipr_cmnd * ipr_cmd)635 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
636 {
637 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
638 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
639 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
640 dma_addr_t dma_addr = ipr_cmd->dma_addr;
641 int hrrq_id;
642
643 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
644 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
645 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
646 ioarcb->data_transfer_length = 0;
647 ioarcb->read_data_transfer_length = 0;
648 ioarcb->ioadl_len = 0;
649 ioarcb->read_ioadl_len = 0;
650
651 if (ipr_cmd->ioa_cfg->sis64) {
652 ioarcb->u.sis64_addr_data.data_ioadl_addr =
653 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
654 ioasa64->u.gata.status = 0;
655 } else {
656 ioarcb->write_ioadl_addr =
657 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
658 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
659 ioasa->u.gata.status = 0;
660 }
661
662 ioasa->hdr.ioasc = 0;
663 ioasa->hdr.residual_data_len = 0;
664 ipr_cmd->scsi_cmd = NULL;
665 ipr_cmd->qc = NULL;
666 ipr_cmd->sense_buffer[0] = 0;
667 ipr_cmd->dma_use_sg = 0;
668 }
669
670 /**
671 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
672 * @ipr_cmd: ipr command struct
673 *
674 * Return value:
675 * none
676 **/
ipr_init_ipr_cmnd(struct ipr_cmnd * ipr_cmd,void (* fast_done)(struct ipr_cmnd *))677 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
678 void (*fast_done) (struct ipr_cmnd *))
679 {
680 ipr_reinit_ipr_cmnd(ipr_cmd);
681 ipr_cmd->u.scratch = 0;
682 ipr_cmd->sibling = NULL;
683 ipr_cmd->eh_comp = NULL;
684 ipr_cmd->fast_done = fast_done;
685 timer_setup(&ipr_cmd->timer, NULL, 0);
686 }
687
688 /**
689 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
690 * @ioa_cfg: ioa config struct
691 *
692 * Return value:
693 * pointer to ipr command struct
694 **/
695 static
__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue * hrrq)696 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
697 {
698 struct ipr_cmnd *ipr_cmd = NULL;
699
700 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
701 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
702 struct ipr_cmnd, queue);
703 list_del(&ipr_cmd->queue);
704 }
705
706
707 return ipr_cmd;
708 }
709
710 /**
711 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
712 * @ioa_cfg: ioa config struct
713 *
714 * Return value:
715 * pointer to ipr command struct
716 **/
717 static
ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg * ioa_cfg)718 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
719 {
720 struct ipr_cmnd *ipr_cmd =
721 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
722 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
723 return ipr_cmd;
724 }
725
726 /**
727 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
728 * @ioa_cfg: ioa config struct
729 * @clr_ints: interrupts to clear
730 *
731 * This function masks all interrupts on the adapter, then clears the
732 * interrupts specified in the mask
733 *
734 * Return value:
735 * none
736 **/
ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg * ioa_cfg,u32 clr_ints)737 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
738 u32 clr_ints)
739 {
740 volatile u32 int_reg;
741 int i;
742
743 /* Stop new interrupts */
744 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
745 spin_lock(&ioa_cfg->hrrq[i]._lock);
746 ioa_cfg->hrrq[i].allow_interrupts = 0;
747 spin_unlock(&ioa_cfg->hrrq[i]._lock);
748 }
749
750 /* Set interrupt mask to stop all new interrupts */
751 if (ioa_cfg->sis64)
752 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
753 else
754 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
755
756 /* Clear any pending interrupts */
757 if (ioa_cfg->sis64)
758 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
759 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
760 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
761 }
762
763 /**
764 * ipr_save_pcix_cmd_reg - Save PCI-X command register
765 * @ioa_cfg: ioa config struct
766 *
767 * Return value:
768 * 0 on success / -EIO on failure
769 **/
ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg * ioa_cfg)770 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
771 {
772 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
773
774 if (pcix_cmd_reg == 0)
775 return 0;
776
777 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
778 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
779 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
780 return -EIO;
781 }
782
783 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
784 return 0;
785 }
786
787 /**
788 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
789 * @ioa_cfg: ioa config struct
790 *
791 * Return value:
792 * 0 on success / -EIO on failure
793 **/
ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg * ioa_cfg)794 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
795 {
796 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
797
798 if (pcix_cmd_reg) {
799 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
800 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
801 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
802 return -EIO;
803 }
804 }
805
806 return 0;
807 }
808
809 /**
810 * __ipr_sata_eh_done - done function for aborted SATA commands
811 * @ipr_cmd: ipr command struct
812 *
813 * This function is invoked for ops generated to SATA
814 * devices which are being aborted.
815 *
816 * Return value:
817 * none
818 **/
__ipr_sata_eh_done(struct ipr_cmnd * ipr_cmd)819 static void __ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
820 {
821 struct ata_queued_cmd *qc = ipr_cmd->qc;
822 struct ipr_sata_port *sata_port = qc->ap->private_data;
823
824 qc->err_mask |= AC_ERR_OTHER;
825 sata_port->ioasa.status |= ATA_BUSY;
826 ata_qc_complete(qc);
827 if (ipr_cmd->eh_comp)
828 complete(ipr_cmd->eh_comp);
829 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
830 }
831
832 /**
833 * ipr_sata_eh_done - done function for aborted SATA commands
834 * @ipr_cmd: ipr command struct
835 *
836 * This function is invoked for ops generated to SATA
837 * devices which are being aborted.
838 *
839 * Return value:
840 * none
841 **/
ipr_sata_eh_done(struct ipr_cmnd * ipr_cmd)842 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
843 {
844 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
845 unsigned long hrrq_flags;
846
847 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
848 __ipr_sata_eh_done(ipr_cmd);
849 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
850 }
851
852 /**
853 * __ipr_scsi_eh_done - mid-layer done function for aborted ops
854 * @ipr_cmd: ipr command struct
855 *
856 * This function is invoked by the interrupt handler for
857 * ops generated by the SCSI mid-layer which are being aborted.
858 *
859 * Return value:
860 * none
861 **/
__ipr_scsi_eh_done(struct ipr_cmnd * ipr_cmd)862 static void __ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
863 {
864 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
865
866 scsi_cmd->result |= (DID_ERROR << 16);
867
868 scsi_dma_unmap(ipr_cmd->scsi_cmd);
869 scsi_cmd->scsi_done(scsi_cmd);
870 if (ipr_cmd->eh_comp)
871 complete(ipr_cmd->eh_comp);
872 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
873 }
874
875 /**
876 * ipr_scsi_eh_done - mid-layer done function for aborted ops
877 * @ipr_cmd: ipr command struct
878 *
879 * This function is invoked by the interrupt handler for
880 * ops generated by the SCSI mid-layer which are being aborted.
881 *
882 * Return value:
883 * none
884 **/
ipr_scsi_eh_done(struct ipr_cmnd * ipr_cmd)885 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
886 {
887 unsigned long hrrq_flags;
888 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
889
890 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
891 __ipr_scsi_eh_done(ipr_cmd);
892 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
893 }
894
895 /**
896 * ipr_fail_all_ops - Fails all outstanding ops.
897 * @ioa_cfg: ioa config struct
898 *
899 * This function fails all outstanding ops.
900 *
901 * Return value:
902 * none
903 **/
ipr_fail_all_ops(struct ipr_ioa_cfg * ioa_cfg)904 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
905 {
906 struct ipr_cmnd *ipr_cmd, *temp;
907 struct ipr_hrr_queue *hrrq;
908
909 ENTER;
910 for_each_hrrq(hrrq, ioa_cfg) {
911 spin_lock(&hrrq->_lock);
912 list_for_each_entry_safe(ipr_cmd,
913 temp, &hrrq->hrrq_pending_q, queue) {
914 list_del(&ipr_cmd->queue);
915
916 ipr_cmd->s.ioasa.hdr.ioasc =
917 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
918 ipr_cmd->s.ioasa.hdr.ilid =
919 cpu_to_be32(IPR_DRIVER_ILID);
920
921 if (ipr_cmd->scsi_cmd)
922 ipr_cmd->done = __ipr_scsi_eh_done;
923 else if (ipr_cmd->qc)
924 ipr_cmd->done = __ipr_sata_eh_done;
925
926 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
927 IPR_IOASC_IOA_WAS_RESET);
928 del_timer(&ipr_cmd->timer);
929 ipr_cmd->done(ipr_cmd);
930 }
931 spin_unlock(&hrrq->_lock);
932 }
933 LEAVE;
934 }
935
936 /**
937 * ipr_send_command - Send driver initiated requests.
938 * @ipr_cmd: ipr command struct
939 *
940 * This function sends a command to the adapter using the correct write call.
941 * In the case of sis64, calculate the ioarcb size required. Then or in the
942 * appropriate bits.
943 *
944 * Return value:
945 * none
946 **/
ipr_send_command(struct ipr_cmnd * ipr_cmd)947 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
948 {
949 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
950 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
951
952 if (ioa_cfg->sis64) {
953 /* The default size is 256 bytes */
954 send_dma_addr |= 0x1;
955
956 /* If the number of ioadls * size of ioadl > 128 bytes,
957 then use a 512 byte ioarcb */
958 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
959 send_dma_addr |= 0x4;
960 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
961 } else
962 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
963 }
964
965 /**
966 * ipr_do_req - Send driver initiated requests.
967 * @ipr_cmd: ipr command struct
968 * @done: done function
969 * @timeout_func: timeout function
970 * @timeout: timeout value
971 *
972 * This function sends the specified command to the adapter with the
973 * timeout given. The done function is invoked on command completion.
974 *
975 * Return value:
976 * none
977 **/
ipr_do_req(struct ipr_cmnd * ipr_cmd,void (* done)(struct ipr_cmnd *),void (* timeout_func)(struct timer_list *),u32 timeout)978 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
979 void (*done) (struct ipr_cmnd *),
980 void (*timeout_func) (struct timer_list *), u32 timeout)
981 {
982 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
983
984 ipr_cmd->done = done;
985
986 ipr_cmd->timer.expires = jiffies + timeout;
987 ipr_cmd->timer.function = timeout_func;
988
989 add_timer(&ipr_cmd->timer);
990
991 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
992
993 ipr_send_command(ipr_cmd);
994 }
995
996 /**
997 * ipr_internal_cmd_done - Op done function for an internally generated op.
998 * @ipr_cmd: ipr command struct
999 *
1000 * This function is the op done function for an internally generated,
1001 * blocking op. It simply wakes the sleeping thread.
1002 *
1003 * Return value:
1004 * none
1005 **/
ipr_internal_cmd_done(struct ipr_cmnd * ipr_cmd)1006 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
1007 {
1008 if (ipr_cmd->sibling)
1009 ipr_cmd->sibling = NULL;
1010 else
1011 complete(&ipr_cmd->completion);
1012 }
1013
1014 /**
1015 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
1016 * @ipr_cmd: ipr command struct
1017 * @dma_addr: dma address
1018 * @len: transfer length
1019 * @flags: ioadl flag value
1020 *
1021 * This function initializes an ioadl in the case where there is only a single
1022 * descriptor.
1023 *
1024 * Return value:
1025 * nothing
1026 **/
ipr_init_ioadl(struct ipr_cmnd * ipr_cmd,dma_addr_t dma_addr,u32 len,int flags)1027 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
1028 u32 len, int flags)
1029 {
1030 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
1031 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
1032
1033 ipr_cmd->dma_use_sg = 1;
1034
1035 if (ipr_cmd->ioa_cfg->sis64) {
1036 ioadl64->flags = cpu_to_be32(flags);
1037 ioadl64->data_len = cpu_to_be32(len);
1038 ioadl64->address = cpu_to_be64(dma_addr);
1039
1040 ipr_cmd->ioarcb.ioadl_len =
1041 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
1042 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1043 } else {
1044 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
1045 ioadl->address = cpu_to_be32(dma_addr);
1046
1047 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
1048 ipr_cmd->ioarcb.read_ioadl_len =
1049 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1050 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
1051 } else {
1052 ipr_cmd->ioarcb.ioadl_len =
1053 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
1054 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
1055 }
1056 }
1057 }
1058
1059 /**
1060 * ipr_send_blocking_cmd - Send command and sleep on its completion.
1061 * @ipr_cmd: ipr command struct
1062 * @timeout_func: function to invoke if command times out
1063 * @timeout: timeout
1064 *
1065 * Return value:
1066 * none
1067 **/
ipr_send_blocking_cmd(struct ipr_cmnd * ipr_cmd,void (* timeout_func)(struct timer_list *),u32 timeout)1068 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
1069 void (*timeout_func) (struct timer_list *),
1070 u32 timeout)
1071 {
1072 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1073
1074 init_completion(&ipr_cmd->completion);
1075 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
1076
1077 spin_unlock_irq(ioa_cfg->host->host_lock);
1078 wait_for_completion(&ipr_cmd->completion);
1079 spin_lock_irq(ioa_cfg->host->host_lock);
1080 }
1081
ipr_get_hrrq_index(struct ipr_ioa_cfg * ioa_cfg)1082 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1083 {
1084 unsigned int hrrq;
1085
1086 if (ioa_cfg->hrrq_num == 1)
1087 hrrq = 0;
1088 else {
1089 hrrq = atomic_add_return(1, &ioa_cfg->hrrq_index);
1090 hrrq = (hrrq % (ioa_cfg->hrrq_num - 1)) + 1;
1091 }
1092 return hrrq;
1093 }
1094
1095 /**
1096 * ipr_send_hcam - Send an HCAM to the adapter.
1097 * @ioa_cfg: ioa config struct
1098 * @type: HCAM type
1099 * @hostrcb: hostrcb struct
1100 *
1101 * This function will send a Host Controlled Async command to the adapter.
1102 * If HCAMs are currently not allowed to be issued to the adapter, it will
1103 * place the hostrcb on the free queue.
1104 *
1105 * Return value:
1106 * none
1107 **/
ipr_send_hcam(struct ipr_ioa_cfg * ioa_cfg,u8 type,struct ipr_hostrcb * hostrcb)1108 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1109 struct ipr_hostrcb *hostrcb)
1110 {
1111 struct ipr_cmnd *ipr_cmd;
1112 struct ipr_ioarcb *ioarcb;
1113
1114 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1115 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1116 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1117 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1118
1119 ipr_cmd->u.hostrcb = hostrcb;
1120 ioarcb = &ipr_cmd->ioarcb;
1121
1122 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1123 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1124 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1125 ioarcb->cmd_pkt.cdb[1] = type;
1126 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1127 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1128
1129 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1130 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1131
1132 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1133 ipr_cmd->done = ipr_process_ccn;
1134 else
1135 ipr_cmd->done = ipr_process_error;
1136
1137 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1138
1139 ipr_send_command(ipr_cmd);
1140 } else {
1141 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1142 }
1143 }
1144
1145 /**
1146 * ipr_update_ata_class - Update the ata class in the resource entry
1147 * @res: resource entry struct
1148 * @proto: cfgte device bus protocol value
1149 *
1150 * Return value:
1151 * none
1152 **/
ipr_update_ata_class(struct ipr_resource_entry * res,unsigned int proto)1153 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1154 {
1155 switch (proto) {
1156 case IPR_PROTO_SATA:
1157 case IPR_PROTO_SAS_STP:
1158 res->ata_class = ATA_DEV_ATA;
1159 break;
1160 case IPR_PROTO_SATA_ATAPI:
1161 case IPR_PROTO_SAS_STP_ATAPI:
1162 res->ata_class = ATA_DEV_ATAPI;
1163 break;
1164 default:
1165 res->ata_class = ATA_DEV_UNKNOWN;
1166 break;
1167 };
1168 }
1169
1170 /**
1171 * ipr_init_res_entry - Initialize a resource entry struct.
1172 * @res: resource entry struct
1173 * @cfgtew: config table entry wrapper struct
1174 *
1175 * Return value:
1176 * none
1177 **/
ipr_init_res_entry(struct ipr_resource_entry * res,struct ipr_config_table_entry_wrapper * cfgtew)1178 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1179 struct ipr_config_table_entry_wrapper *cfgtew)
1180 {
1181 int found = 0;
1182 unsigned int proto;
1183 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1184 struct ipr_resource_entry *gscsi_res = NULL;
1185
1186 res->needs_sync_complete = 0;
1187 res->in_erp = 0;
1188 res->add_to_ml = 0;
1189 res->del_from_ml = 0;
1190 res->resetting_device = 0;
1191 res->reset_occurred = 0;
1192 res->sdev = NULL;
1193 res->sata_port = NULL;
1194
1195 if (ioa_cfg->sis64) {
1196 proto = cfgtew->u.cfgte64->proto;
1197 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1198 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1199 res->qmodel = IPR_QUEUEING_MODEL64(res);
1200 res->type = cfgtew->u.cfgte64->res_type;
1201
1202 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1203 sizeof(res->res_path));
1204
1205 res->bus = 0;
1206 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1207 sizeof(res->dev_lun.scsi_lun));
1208 res->lun = scsilun_to_int(&res->dev_lun);
1209
1210 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1211 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1212 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1213 found = 1;
1214 res->target = gscsi_res->target;
1215 break;
1216 }
1217 }
1218 if (!found) {
1219 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1220 ioa_cfg->max_devs_supported);
1221 set_bit(res->target, ioa_cfg->target_ids);
1222 }
1223 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1224 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1225 res->target = 0;
1226 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1227 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1228 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1229 ioa_cfg->max_devs_supported);
1230 set_bit(res->target, ioa_cfg->array_ids);
1231 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1232 res->bus = IPR_VSET_VIRTUAL_BUS;
1233 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1234 ioa_cfg->max_devs_supported);
1235 set_bit(res->target, ioa_cfg->vset_ids);
1236 } else {
1237 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1238 ioa_cfg->max_devs_supported);
1239 set_bit(res->target, ioa_cfg->target_ids);
1240 }
1241 } else {
1242 proto = cfgtew->u.cfgte->proto;
1243 res->qmodel = IPR_QUEUEING_MODEL(res);
1244 res->flags = cfgtew->u.cfgte->flags;
1245 if (res->flags & IPR_IS_IOA_RESOURCE)
1246 res->type = IPR_RES_TYPE_IOAFP;
1247 else
1248 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1249
1250 res->bus = cfgtew->u.cfgte->res_addr.bus;
1251 res->target = cfgtew->u.cfgte->res_addr.target;
1252 res->lun = cfgtew->u.cfgte->res_addr.lun;
1253 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1254 }
1255
1256 ipr_update_ata_class(res, proto);
1257 }
1258
1259 /**
1260 * ipr_is_same_device - Determine if two devices are the same.
1261 * @res: resource entry struct
1262 * @cfgtew: config table entry wrapper struct
1263 *
1264 * Return value:
1265 * 1 if the devices are the same / 0 otherwise
1266 **/
ipr_is_same_device(struct ipr_resource_entry * res,struct ipr_config_table_entry_wrapper * cfgtew)1267 static int ipr_is_same_device(struct ipr_resource_entry *res,
1268 struct ipr_config_table_entry_wrapper *cfgtew)
1269 {
1270 if (res->ioa_cfg->sis64) {
1271 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1272 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1273 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1274 sizeof(cfgtew->u.cfgte64->lun))) {
1275 return 1;
1276 }
1277 } else {
1278 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1279 res->target == cfgtew->u.cfgte->res_addr.target &&
1280 res->lun == cfgtew->u.cfgte->res_addr.lun)
1281 return 1;
1282 }
1283
1284 return 0;
1285 }
1286
1287 /**
1288 * __ipr_format_res_path - Format the resource path for printing.
1289 * @res_path: resource path
1290 * @buf: buffer
1291 * @len: length of buffer provided
1292 *
1293 * Return value:
1294 * pointer to buffer
1295 **/
__ipr_format_res_path(u8 * res_path,char * buffer,int len)1296 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1297 {
1298 int i;
1299 char *p = buffer;
1300
1301 *p = '\0';
1302 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1303 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1304 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1305
1306 return buffer;
1307 }
1308
1309 /**
1310 * ipr_format_res_path - Format the resource path for printing.
1311 * @ioa_cfg: ioa config struct
1312 * @res_path: resource path
1313 * @buf: buffer
1314 * @len: length of buffer provided
1315 *
1316 * Return value:
1317 * pointer to buffer
1318 **/
ipr_format_res_path(struct ipr_ioa_cfg * ioa_cfg,u8 * res_path,char * buffer,int len)1319 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1320 u8 *res_path, char *buffer, int len)
1321 {
1322 char *p = buffer;
1323
1324 *p = '\0';
1325 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1326 __ipr_format_res_path(res_path, p, len - (buffer - p));
1327 return buffer;
1328 }
1329
1330 /**
1331 * ipr_update_res_entry - Update the resource entry.
1332 * @res: resource entry struct
1333 * @cfgtew: config table entry wrapper struct
1334 *
1335 * Return value:
1336 * none
1337 **/
ipr_update_res_entry(struct ipr_resource_entry * res,struct ipr_config_table_entry_wrapper * cfgtew)1338 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1339 struct ipr_config_table_entry_wrapper *cfgtew)
1340 {
1341 char buffer[IPR_MAX_RES_PATH_LENGTH];
1342 unsigned int proto;
1343 int new_path = 0;
1344
1345 if (res->ioa_cfg->sis64) {
1346 res->flags = be16_to_cpu(cfgtew->u.cfgte64->flags);
1347 res->res_flags = be16_to_cpu(cfgtew->u.cfgte64->res_flags);
1348 res->type = cfgtew->u.cfgte64->res_type;
1349
1350 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1351 sizeof(struct ipr_std_inq_data));
1352
1353 res->qmodel = IPR_QUEUEING_MODEL64(res);
1354 proto = cfgtew->u.cfgte64->proto;
1355 res->res_handle = cfgtew->u.cfgte64->res_handle;
1356 res->dev_id = cfgtew->u.cfgte64->dev_id;
1357
1358 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1359 sizeof(res->dev_lun.scsi_lun));
1360
1361 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1362 sizeof(res->res_path))) {
1363 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1364 sizeof(res->res_path));
1365 new_path = 1;
1366 }
1367
1368 if (res->sdev && new_path)
1369 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1370 ipr_format_res_path(res->ioa_cfg,
1371 res->res_path, buffer, sizeof(buffer)));
1372 } else {
1373 res->flags = cfgtew->u.cfgte->flags;
1374 if (res->flags & IPR_IS_IOA_RESOURCE)
1375 res->type = IPR_RES_TYPE_IOAFP;
1376 else
1377 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1378
1379 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1380 sizeof(struct ipr_std_inq_data));
1381
1382 res->qmodel = IPR_QUEUEING_MODEL(res);
1383 proto = cfgtew->u.cfgte->proto;
1384 res->res_handle = cfgtew->u.cfgte->res_handle;
1385 }
1386
1387 ipr_update_ata_class(res, proto);
1388 }
1389
1390 /**
1391 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1392 * for the resource.
1393 * @res: resource entry struct
1394 * @cfgtew: config table entry wrapper struct
1395 *
1396 * Return value:
1397 * none
1398 **/
ipr_clear_res_target(struct ipr_resource_entry * res)1399 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1400 {
1401 struct ipr_resource_entry *gscsi_res = NULL;
1402 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1403
1404 if (!ioa_cfg->sis64)
1405 return;
1406
1407 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1408 clear_bit(res->target, ioa_cfg->array_ids);
1409 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1410 clear_bit(res->target, ioa_cfg->vset_ids);
1411 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1412 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1413 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1414 return;
1415 clear_bit(res->target, ioa_cfg->target_ids);
1416
1417 } else if (res->bus == 0)
1418 clear_bit(res->target, ioa_cfg->target_ids);
1419 }
1420
1421 /**
1422 * ipr_handle_config_change - Handle a config change from the adapter
1423 * @ioa_cfg: ioa config struct
1424 * @hostrcb: hostrcb
1425 *
1426 * Return value:
1427 * none
1428 **/
ipr_handle_config_change(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1429 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1430 struct ipr_hostrcb *hostrcb)
1431 {
1432 struct ipr_resource_entry *res = NULL;
1433 struct ipr_config_table_entry_wrapper cfgtew;
1434 __be32 cc_res_handle;
1435
1436 u32 is_ndn = 1;
1437
1438 if (ioa_cfg->sis64) {
1439 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1440 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1441 } else {
1442 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1443 cc_res_handle = cfgtew.u.cfgte->res_handle;
1444 }
1445
1446 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1447 if (res->res_handle == cc_res_handle) {
1448 is_ndn = 0;
1449 break;
1450 }
1451 }
1452
1453 if (is_ndn) {
1454 if (list_empty(&ioa_cfg->free_res_q)) {
1455 ipr_send_hcam(ioa_cfg,
1456 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1457 hostrcb);
1458 return;
1459 }
1460
1461 res = list_entry(ioa_cfg->free_res_q.next,
1462 struct ipr_resource_entry, queue);
1463
1464 list_del(&res->queue);
1465 ipr_init_res_entry(res, &cfgtew);
1466 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1467 }
1468
1469 ipr_update_res_entry(res, &cfgtew);
1470
1471 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1472 if (res->sdev) {
1473 res->del_from_ml = 1;
1474 res->res_handle = IPR_INVALID_RES_HANDLE;
1475 schedule_work(&ioa_cfg->work_q);
1476 } else {
1477 ipr_clear_res_target(res);
1478 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1479 }
1480 } else if (!res->sdev || res->del_from_ml) {
1481 res->add_to_ml = 1;
1482 schedule_work(&ioa_cfg->work_q);
1483 }
1484
1485 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1486 }
1487
1488 /**
1489 * ipr_process_ccn - Op done function for a CCN.
1490 * @ipr_cmd: ipr command struct
1491 *
1492 * This function is the op done function for a configuration
1493 * change notification host controlled async from the adapter.
1494 *
1495 * Return value:
1496 * none
1497 **/
ipr_process_ccn(struct ipr_cmnd * ipr_cmd)1498 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1499 {
1500 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1501 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1502 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1503
1504 list_del_init(&hostrcb->queue);
1505 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1506
1507 if (ioasc) {
1508 if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
1509 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST)
1510 dev_err(&ioa_cfg->pdev->dev,
1511 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1512
1513 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1514 } else {
1515 ipr_handle_config_change(ioa_cfg, hostrcb);
1516 }
1517 }
1518
1519 /**
1520 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1521 * @i: index into buffer
1522 * @buf: string to modify
1523 *
1524 * This function will strip all trailing whitespace, pad the end
1525 * of the string with a single space, and NULL terminate the string.
1526 *
1527 * Return value:
1528 * new length of string
1529 **/
strip_and_pad_whitespace(int i,char * buf)1530 static int strip_and_pad_whitespace(int i, char *buf)
1531 {
1532 while (i && buf[i] == ' ')
1533 i--;
1534 buf[i+1] = ' ';
1535 buf[i+2] = '\0';
1536 return i + 2;
1537 }
1538
1539 /**
1540 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1541 * @prefix: string to print at start of printk
1542 * @hostrcb: hostrcb pointer
1543 * @vpd: vendor/product id/sn struct
1544 *
1545 * Return value:
1546 * none
1547 **/
ipr_log_vpd_compact(char * prefix,struct ipr_hostrcb * hostrcb,struct ipr_vpd * vpd)1548 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1549 struct ipr_vpd *vpd)
1550 {
1551 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1552 int i = 0;
1553
1554 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1555 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1556
1557 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1558 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1559
1560 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1561 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1562
1563 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1564 }
1565
1566 /**
1567 * ipr_log_vpd - Log the passed VPD to the error log.
1568 * @vpd: vendor/product id/sn struct
1569 *
1570 * Return value:
1571 * none
1572 **/
ipr_log_vpd(struct ipr_vpd * vpd)1573 static void ipr_log_vpd(struct ipr_vpd *vpd)
1574 {
1575 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1576 + IPR_SERIAL_NUM_LEN];
1577
1578 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1579 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1580 IPR_PROD_ID_LEN);
1581 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1582 ipr_err("Vendor/Product ID: %s\n", buffer);
1583
1584 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1585 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1586 ipr_err(" Serial Number: %s\n", buffer);
1587 }
1588
1589 /**
1590 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1591 * @prefix: string to print at start of printk
1592 * @hostrcb: hostrcb pointer
1593 * @vpd: vendor/product id/sn/wwn struct
1594 *
1595 * Return value:
1596 * none
1597 **/
ipr_log_ext_vpd_compact(char * prefix,struct ipr_hostrcb * hostrcb,struct ipr_ext_vpd * vpd)1598 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1599 struct ipr_ext_vpd *vpd)
1600 {
1601 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1602 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1603 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1604 }
1605
1606 /**
1607 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1608 * @vpd: vendor/product id/sn/wwn struct
1609 *
1610 * Return value:
1611 * none
1612 **/
ipr_log_ext_vpd(struct ipr_ext_vpd * vpd)1613 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1614 {
1615 ipr_log_vpd(&vpd->vpd);
1616 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1617 be32_to_cpu(vpd->wwid[1]));
1618 }
1619
1620 /**
1621 * ipr_log_enhanced_cache_error - Log a cache error.
1622 * @ioa_cfg: ioa config struct
1623 * @hostrcb: hostrcb struct
1624 *
1625 * Return value:
1626 * none
1627 **/
ipr_log_enhanced_cache_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1628 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1629 struct ipr_hostrcb *hostrcb)
1630 {
1631 struct ipr_hostrcb_type_12_error *error;
1632
1633 if (ioa_cfg->sis64)
1634 error = &hostrcb->hcam.u.error64.u.type_12_error;
1635 else
1636 error = &hostrcb->hcam.u.error.u.type_12_error;
1637
1638 ipr_err("-----Current Configuration-----\n");
1639 ipr_err("Cache Directory Card Information:\n");
1640 ipr_log_ext_vpd(&error->ioa_vpd);
1641 ipr_err("Adapter Card Information:\n");
1642 ipr_log_ext_vpd(&error->cfc_vpd);
1643
1644 ipr_err("-----Expected Configuration-----\n");
1645 ipr_err("Cache Directory Card Information:\n");
1646 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1647 ipr_err("Adapter Card Information:\n");
1648 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1649
1650 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1651 be32_to_cpu(error->ioa_data[0]),
1652 be32_to_cpu(error->ioa_data[1]),
1653 be32_to_cpu(error->ioa_data[2]));
1654 }
1655
1656 /**
1657 * ipr_log_cache_error - Log a cache error.
1658 * @ioa_cfg: ioa config struct
1659 * @hostrcb: hostrcb struct
1660 *
1661 * Return value:
1662 * none
1663 **/
ipr_log_cache_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1664 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1665 struct ipr_hostrcb *hostrcb)
1666 {
1667 struct ipr_hostrcb_type_02_error *error =
1668 &hostrcb->hcam.u.error.u.type_02_error;
1669
1670 ipr_err("-----Current Configuration-----\n");
1671 ipr_err("Cache Directory Card Information:\n");
1672 ipr_log_vpd(&error->ioa_vpd);
1673 ipr_err("Adapter Card Information:\n");
1674 ipr_log_vpd(&error->cfc_vpd);
1675
1676 ipr_err("-----Expected Configuration-----\n");
1677 ipr_err("Cache Directory Card Information:\n");
1678 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1679 ipr_err("Adapter Card Information:\n");
1680 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1681
1682 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1683 be32_to_cpu(error->ioa_data[0]),
1684 be32_to_cpu(error->ioa_data[1]),
1685 be32_to_cpu(error->ioa_data[2]));
1686 }
1687
1688 /**
1689 * ipr_log_enhanced_config_error - Log a configuration error.
1690 * @ioa_cfg: ioa config struct
1691 * @hostrcb: hostrcb struct
1692 *
1693 * Return value:
1694 * none
1695 **/
ipr_log_enhanced_config_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1696 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1697 struct ipr_hostrcb *hostrcb)
1698 {
1699 int errors_logged, i;
1700 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1701 struct ipr_hostrcb_type_13_error *error;
1702
1703 error = &hostrcb->hcam.u.error.u.type_13_error;
1704 errors_logged = be32_to_cpu(error->errors_logged);
1705
1706 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1707 be32_to_cpu(error->errors_detected), errors_logged);
1708
1709 dev_entry = error->dev;
1710
1711 for (i = 0; i < errors_logged; i++, dev_entry++) {
1712 ipr_err_separator;
1713
1714 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1715 ipr_log_ext_vpd(&dev_entry->vpd);
1716
1717 ipr_err("-----New Device Information-----\n");
1718 ipr_log_ext_vpd(&dev_entry->new_vpd);
1719
1720 ipr_err("Cache Directory Card Information:\n");
1721 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1722
1723 ipr_err("Adapter Card Information:\n");
1724 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1725 }
1726 }
1727
1728 /**
1729 * ipr_log_sis64_config_error - Log a device error.
1730 * @ioa_cfg: ioa config struct
1731 * @hostrcb: hostrcb struct
1732 *
1733 * Return value:
1734 * none
1735 **/
ipr_log_sis64_config_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1736 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1737 struct ipr_hostrcb *hostrcb)
1738 {
1739 int errors_logged, i;
1740 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1741 struct ipr_hostrcb_type_23_error *error;
1742 char buffer[IPR_MAX_RES_PATH_LENGTH];
1743
1744 error = &hostrcb->hcam.u.error64.u.type_23_error;
1745 errors_logged = be32_to_cpu(error->errors_logged);
1746
1747 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1748 be32_to_cpu(error->errors_detected), errors_logged);
1749
1750 dev_entry = error->dev;
1751
1752 for (i = 0; i < errors_logged; i++, dev_entry++) {
1753 ipr_err_separator;
1754
1755 ipr_err("Device %d : %s", i + 1,
1756 __ipr_format_res_path(dev_entry->res_path,
1757 buffer, sizeof(buffer)));
1758 ipr_log_ext_vpd(&dev_entry->vpd);
1759
1760 ipr_err("-----New Device Information-----\n");
1761 ipr_log_ext_vpd(&dev_entry->new_vpd);
1762
1763 ipr_err("Cache Directory Card Information:\n");
1764 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1765
1766 ipr_err("Adapter Card Information:\n");
1767 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1768 }
1769 }
1770
1771 /**
1772 * ipr_log_config_error - Log a configuration error.
1773 * @ioa_cfg: ioa config struct
1774 * @hostrcb: hostrcb struct
1775 *
1776 * Return value:
1777 * none
1778 **/
ipr_log_config_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1779 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1780 struct ipr_hostrcb *hostrcb)
1781 {
1782 int errors_logged, i;
1783 struct ipr_hostrcb_device_data_entry *dev_entry;
1784 struct ipr_hostrcb_type_03_error *error;
1785
1786 error = &hostrcb->hcam.u.error.u.type_03_error;
1787 errors_logged = be32_to_cpu(error->errors_logged);
1788
1789 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1790 be32_to_cpu(error->errors_detected), errors_logged);
1791
1792 dev_entry = error->dev;
1793
1794 for (i = 0; i < errors_logged; i++, dev_entry++) {
1795 ipr_err_separator;
1796
1797 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1798 ipr_log_vpd(&dev_entry->vpd);
1799
1800 ipr_err("-----New Device Information-----\n");
1801 ipr_log_vpd(&dev_entry->new_vpd);
1802
1803 ipr_err("Cache Directory Card Information:\n");
1804 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1805
1806 ipr_err("Adapter Card Information:\n");
1807 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1808
1809 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1810 be32_to_cpu(dev_entry->ioa_data[0]),
1811 be32_to_cpu(dev_entry->ioa_data[1]),
1812 be32_to_cpu(dev_entry->ioa_data[2]),
1813 be32_to_cpu(dev_entry->ioa_data[3]),
1814 be32_to_cpu(dev_entry->ioa_data[4]));
1815 }
1816 }
1817
1818 /**
1819 * ipr_log_enhanced_array_error - Log an array configuration error.
1820 * @ioa_cfg: ioa config struct
1821 * @hostrcb: hostrcb struct
1822 *
1823 * Return value:
1824 * none
1825 **/
ipr_log_enhanced_array_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1826 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1827 struct ipr_hostrcb *hostrcb)
1828 {
1829 int i, num_entries;
1830 struct ipr_hostrcb_type_14_error *error;
1831 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1832 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1833
1834 error = &hostrcb->hcam.u.error.u.type_14_error;
1835
1836 ipr_err_separator;
1837
1838 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1839 error->protection_level,
1840 ioa_cfg->host->host_no,
1841 error->last_func_vset_res_addr.bus,
1842 error->last_func_vset_res_addr.target,
1843 error->last_func_vset_res_addr.lun);
1844
1845 ipr_err_separator;
1846
1847 array_entry = error->array_member;
1848 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1849 ARRAY_SIZE(error->array_member));
1850
1851 for (i = 0; i < num_entries; i++, array_entry++) {
1852 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1853 continue;
1854
1855 if (be32_to_cpu(error->exposed_mode_adn) == i)
1856 ipr_err("Exposed Array Member %d:\n", i);
1857 else
1858 ipr_err("Array Member %d:\n", i);
1859
1860 ipr_log_ext_vpd(&array_entry->vpd);
1861 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1862 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1863 "Expected Location");
1864
1865 ipr_err_separator;
1866 }
1867 }
1868
1869 /**
1870 * ipr_log_array_error - Log an array configuration error.
1871 * @ioa_cfg: ioa config struct
1872 * @hostrcb: hostrcb struct
1873 *
1874 * Return value:
1875 * none
1876 **/
ipr_log_array_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1877 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1878 struct ipr_hostrcb *hostrcb)
1879 {
1880 int i;
1881 struct ipr_hostrcb_type_04_error *error;
1882 struct ipr_hostrcb_array_data_entry *array_entry;
1883 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1884
1885 error = &hostrcb->hcam.u.error.u.type_04_error;
1886
1887 ipr_err_separator;
1888
1889 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1890 error->protection_level,
1891 ioa_cfg->host->host_no,
1892 error->last_func_vset_res_addr.bus,
1893 error->last_func_vset_res_addr.target,
1894 error->last_func_vset_res_addr.lun);
1895
1896 ipr_err_separator;
1897
1898 array_entry = error->array_member;
1899
1900 for (i = 0; i < 18; i++) {
1901 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1902 continue;
1903
1904 if (be32_to_cpu(error->exposed_mode_adn) == i)
1905 ipr_err("Exposed Array Member %d:\n", i);
1906 else
1907 ipr_err("Array Member %d:\n", i);
1908
1909 ipr_log_vpd(&array_entry->vpd);
1910
1911 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1912 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1913 "Expected Location");
1914
1915 ipr_err_separator;
1916
1917 if (i == 9)
1918 array_entry = error->array_member2;
1919 else
1920 array_entry++;
1921 }
1922 }
1923
1924 /**
1925 * ipr_log_hex_data - Log additional hex IOA error data.
1926 * @ioa_cfg: ioa config struct
1927 * @data: IOA error data
1928 * @len: data length
1929 *
1930 * Return value:
1931 * none
1932 **/
ipr_log_hex_data(struct ipr_ioa_cfg * ioa_cfg,__be32 * data,int len)1933 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, __be32 *data, int len)
1934 {
1935 int i;
1936
1937 if (len == 0)
1938 return;
1939
1940 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1941 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1942
1943 for (i = 0; i < len / 4; i += 4) {
1944 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1945 be32_to_cpu(data[i]),
1946 be32_to_cpu(data[i+1]),
1947 be32_to_cpu(data[i+2]),
1948 be32_to_cpu(data[i+3]));
1949 }
1950 }
1951
1952 /**
1953 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1954 * @ioa_cfg: ioa config struct
1955 * @hostrcb: hostrcb struct
1956 *
1957 * Return value:
1958 * none
1959 **/
ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1960 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1961 struct ipr_hostrcb *hostrcb)
1962 {
1963 struct ipr_hostrcb_type_17_error *error;
1964
1965 if (ioa_cfg->sis64)
1966 error = &hostrcb->hcam.u.error64.u.type_17_error;
1967 else
1968 error = &hostrcb->hcam.u.error.u.type_17_error;
1969
1970 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1971 strim(error->failure_reason);
1972
1973 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1974 be32_to_cpu(hostrcb->hcam.u.error.prc));
1975 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1976 ipr_log_hex_data(ioa_cfg, error->data,
1977 be32_to_cpu(hostrcb->hcam.length) -
1978 (offsetof(struct ipr_hostrcb_error, u) +
1979 offsetof(struct ipr_hostrcb_type_17_error, data)));
1980 }
1981
1982 /**
1983 * ipr_log_dual_ioa_error - Log a dual adapter error.
1984 * @ioa_cfg: ioa config struct
1985 * @hostrcb: hostrcb struct
1986 *
1987 * Return value:
1988 * none
1989 **/
ipr_log_dual_ioa_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)1990 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1991 struct ipr_hostrcb *hostrcb)
1992 {
1993 struct ipr_hostrcb_type_07_error *error;
1994
1995 error = &hostrcb->hcam.u.error.u.type_07_error;
1996 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1997 strim(error->failure_reason);
1998
1999 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
2000 be32_to_cpu(hostrcb->hcam.u.error.prc));
2001 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
2002 ipr_log_hex_data(ioa_cfg, error->data,
2003 be32_to_cpu(hostrcb->hcam.length) -
2004 (offsetof(struct ipr_hostrcb_error, u) +
2005 offsetof(struct ipr_hostrcb_type_07_error, data)));
2006 }
2007
2008 static const struct {
2009 u8 active;
2010 char *desc;
2011 } path_active_desc[] = {
2012 { IPR_PATH_NO_INFO, "Path" },
2013 { IPR_PATH_ACTIVE, "Active path" },
2014 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
2015 };
2016
2017 static const struct {
2018 u8 state;
2019 char *desc;
2020 } path_state_desc[] = {
2021 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
2022 { IPR_PATH_HEALTHY, "is healthy" },
2023 { IPR_PATH_DEGRADED, "is degraded" },
2024 { IPR_PATH_FAILED, "is failed" }
2025 };
2026
2027 /**
2028 * ipr_log_fabric_path - Log a fabric path error
2029 * @hostrcb: hostrcb struct
2030 * @fabric: fabric descriptor
2031 *
2032 * Return value:
2033 * none
2034 **/
ipr_log_fabric_path(struct ipr_hostrcb * hostrcb,struct ipr_hostrcb_fabric_desc * fabric)2035 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
2036 struct ipr_hostrcb_fabric_desc *fabric)
2037 {
2038 int i, j;
2039 u8 path_state = fabric->path_state;
2040 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2041 u8 state = path_state & IPR_PATH_STATE_MASK;
2042
2043 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2044 if (path_active_desc[i].active != active)
2045 continue;
2046
2047 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2048 if (path_state_desc[j].state != state)
2049 continue;
2050
2051 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
2052 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
2053 path_active_desc[i].desc, path_state_desc[j].desc,
2054 fabric->ioa_port);
2055 } else if (fabric->cascaded_expander == 0xff) {
2056 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
2057 path_active_desc[i].desc, path_state_desc[j].desc,
2058 fabric->ioa_port, fabric->phy);
2059 } else if (fabric->phy == 0xff) {
2060 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
2061 path_active_desc[i].desc, path_state_desc[j].desc,
2062 fabric->ioa_port, fabric->cascaded_expander);
2063 } else {
2064 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
2065 path_active_desc[i].desc, path_state_desc[j].desc,
2066 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2067 }
2068 return;
2069 }
2070 }
2071
2072 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
2073 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
2074 }
2075
2076 /**
2077 * ipr_log64_fabric_path - Log a fabric path error
2078 * @hostrcb: hostrcb struct
2079 * @fabric: fabric descriptor
2080 *
2081 * Return value:
2082 * none
2083 **/
ipr_log64_fabric_path(struct ipr_hostrcb * hostrcb,struct ipr_hostrcb64_fabric_desc * fabric)2084 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2085 struct ipr_hostrcb64_fabric_desc *fabric)
2086 {
2087 int i, j;
2088 u8 path_state = fabric->path_state;
2089 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2090 u8 state = path_state & IPR_PATH_STATE_MASK;
2091 char buffer[IPR_MAX_RES_PATH_LENGTH];
2092
2093 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2094 if (path_active_desc[i].active != active)
2095 continue;
2096
2097 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2098 if (path_state_desc[j].state != state)
2099 continue;
2100
2101 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2102 path_active_desc[i].desc, path_state_desc[j].desc,
2103 ipr_format_res_path(hostrcb->ioa_cfg,
2104 fabric->res_path,
2105 buffer, sizeof(buffer)));
2106 return;
2107 }
2108 }
2109
2110 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2111 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2112 buffer, sizeof(buffer)));
2113 }
2114
2115 static const struct {
2116 u8 type;
2117 char *desc;
2118 } path_type_desc[] = {
2119 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2120 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2121 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2122 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2123 };
2124
2125 static const struct {
2126 u8 status;
2127 char *desc;
2128 } path_status_desc[] = {
2129 { IPR_PATH_CFG_NO_PROB, "Functional" },
2130 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2131 { IPR_PATH_CFG_FAILED, "Failed" },
2132 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2133 { IPR_PATH_NOT_DETECTED, "Missing" },
2134 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2135 };
2136
2137 static const char *link_rate[] = {
2138 "unknown",
2139 "disabled",
2140 "phy reset problem",
2141 "spinup hold",
2142 "port selector",
2143 "unknown",
2144 "unknown",
2145 "unknown",
2146 "1.5Gbps",
2147 "3.0Gbps",
2148 "unknown",
2149 "unknown",
2150 "unknown",
2151 "unknown",
2152 "unknown",
2153 "unknown"
2154 };
2155
2156 /**
2157 * ipr_log_path_elem - Log a fabric path element.
2158 * @hostrcb: hostrcb struct
2159 * @cfg: fabric path element struct
2160 *
2161 * Return value:
2162 * none
2163 **/
ipr_log_path_elem(struct ipr_hostrcb * hostrcb,struct ipr_hostrcb_config_element * cfg)2164 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2165 struct ipr_hostrcb_config_element *cfg)
2166 {
2167 int i, j;
2168 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2169 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2170
2171 if (type == IPR_PATH_CFG_NOT_EXIST)
2172 return;
2173
2174 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2175 if (path_type_desc[i].type != type)
2176 continue;
2177
2178 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2179 if (path_status_desc[j].status != status)
2180 continue;
2181
2182 if (type == IPR_PATH_CFG_IOA_PORT) {
2183 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2184 path_status_desc[j].desc, path_type_desc[i].desc,
2185 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2186 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2187 } else {
2188 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2189 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2190 path_status_desc[j].desc, path_type_desc[i].desc,
2191 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2192 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2193 } else if (cfg->cascaded_expander == 0xff) {
2194 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2195 "WWN=%08X%08X\n", path_status_desc[j].desc,
2196 path_type_desc[i].desc, cfg->phy,
2197 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2198 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2199 } else if (cfg->phy == 0xff) {
2200 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2201 "WWN=%08X%08X\n", path_status_desc[j].desc,
2202 path_type_desc[i].desc, cfg->cascaded_expander,
2203 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2204 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2205 } else {
2206 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2207 "WWN=%08X%08X\n", path_status_desc[j].desc,
2208 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2209 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2210 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2211 }
2212 }
2213 return;
2214 }
2215 }
2216
2217 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2218 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2219 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2220 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2221 }
2222
2223 /**
2224 * ipr_log64_path_elem - Log a fabric path element.
2225 * @hostrcb: hostrcb struct
2226 * @cfg: fabric path element struct
2227 *
2228 * Return value:
2229 * none
2230 **/
ipr_log64_path_elem(struct ipr_hostrcb * hostrcb,struct ipr_hostrcb64_config_element * cfg)2231 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2232 struct ipr_hostrcb64_config_element *cfg)
2233 {
2234 int i, j;
2235 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2236 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2237 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2238 char buffer[IPR_MAX_RES_PATH_LENGTH];
2239
2240 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2241 return;
2242
2243 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2244 if (path_type_desc[i].type != type)
2245 continue;
2246
2247 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2248 if (path_status_desc[j].status != status)
2249 continue;
2250
2251 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2252 path_status_desc[j].desc, path_type_desc[i].desc,
2253 ipr_format_res_path(hostrcb->ioa_cfg,
2254 cfg->res_path, buffer, sizeof(buffer)),
2255 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2256 be32_to_cpu(cfg->wwid[0]),
2257 be32_to_cpu(cfg->wwid[1]));
2258 return;
2259 }
2260 }
2261 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2262 "WWN=%08X%08X\n", cfg->type_status,
2263 ipr_format_res_path(hostrcb->ioa_cfg,
2264 cfg->res_path, buffer, sizeof(buffer)),
2265 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2266 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2267 }
2268
2269 /**
2270 * ipr_log_fabric_error - Log a fabric error.
2271 * @ioa_cfg: ioa config struct
2272 * @hostrcb: hostrcb struct
2273 *
2274 * Return value:
2275 * none
2276 **/
ipr_log_fabric_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)2277 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2278 struct ipr_hostrcb *hostrcb)
2279 {
2280 struct ipr_hostrcb_type_20_error *error;
2281 struct ipr_hostrcb_fabric_desc *fabric;
2282 struct ipr_hostrcb_config_element *cfg;
2283 int i, add_len;
2284
2285 error = &hostrcb->hcam.u.error.u.type_20_error;
2286 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2287 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2288
2289 add_len = be32_to_cpu(hostrcb->hcam.length) -
2290 (offsetof(struct ipr_hostrcb_error, u) +
2291 offsetof(struct ipr_hostrcb_type_20_error, desc));
2292
2293 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2294 ipr_log_fabric_path(hostrcb, fabric);
2295 for_each_fabric_cfg(fabric, cfg)
2296 ipr_log_path_elem(hostrcb, cfg);
2297
2298 add_len -= be16_to_cpu(fabric->length);
2299 fabric = (struct ipr_hostrcb_fabric_desc *)
2300 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2301 }
2302
2303 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2304 }
2305
2306 /**
2307 * ipr_log_sis64_array_error - Log a sis64 array error.
2308 * @ioa_cfg: ioa config struct
2309 * @hostrcb: hostrcb struct
2310 *
2311 * Return value:
2312 * none
2313 **/
ipr_log_sis64_array_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)2314 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2315 struct ipr_hostrcb *hostrcb)
2316 {
2317 int i, num_entries;
2318 struct ipr_hostrcb_type_24_error *error;
2319 struct ipr_hostrcb64_array_data_entry *array_entry;
2320 char buffer[IPR_MAX_RES_PATH_LENGTH];
2321 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2322
2323 error = &hostrcb->hcam.u.error64.u.type_24_error;
2324
2325 ipr_err_separator;
2326
2327 ipr_err("RAID %s Array Configuration: %s\n",
2328 error->protection_level,
2329 ipr_format_res_path(ioa_cfg, error->last_res_path,
2330 buffer, sizeof(buffer)));
2331
2332 ipr_err_separator;
2333
2334 array_entry = error->array_member;
2335 num_entries = min_t(u32, error->num_entries,
2336 ARRAY_SIZE(error->array_member));
2337
2338 for (i = 0; i < num_entries; i++, array_entry++) {
2339
2340 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2341 continue;
2342
2343 if (error->exposed_mode_adn == i)
2344 ipr_err("Exposed Array Member %d:\n", i);
2345 else
2346 ipr_err("Array Member %d:\n", i);
2347
2348 ipr_err("Array Member %d:\n", i);
2349 ipr_log_ext_vpd(&array_entry->vpd);
2350 ipr_err("Current Location: %s\n",
2351 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2352 buffer, sizeof(buffer)));
2353 ipr_err("Expected Location: %s\n",
2354 ipr_format_res_path(ioa_cfg,
2355 array_entry->expected_res_path,
2356 buffer, sizeof(buffer)));
2357
2358 ipr_err_separator;
2359 }
2360 }
2361
2362 /**
2363 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2364 * @ioa_cfg: ioa config struct
2365 * @hostrcb: hostrcb struct
2366 *
2367 * Return value:
2368 * none
2369 **/
ipr_log_sis64_fabric_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)2370 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2371 struct ipr_hostrcb *hostrcb)
2372 {
2373 struct ipr_hostrcb_type_30_error *error;
2374 struct ipr_hostrcb64_fabric_desc *fabric;
2375 struct ipr_hostrcb64_config_element *cfg;
2376 int i, add_len;
2377
2378 error = &hostrcb->hcam.u.error64.u.type_30_error;
2379
2380 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2381 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2382
2383 add_len = be32_to_cpu(hostrcb->hcam.length) -
2384 (offsetof(struct ipr_hostrcb64_error, u) +
2385 offsetof(struct ipr_hostrcb_type_30_error, desc));
2386
2387 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2388 ipr_log64_fabric_path(hostrcb, fabric);
2389 for_each_fabric_cfg(fabric, cfg)
2390 ipr_log64_path_elem(hostrcb, cfg);
2391
2392 add_len -= be16_to_cpu(fabric->length);
2393 fabric = (struct ipr_hostrcb64_fabric_desc *)
2394 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2395 }
2396
2397 ipr_log_hex_data(ioa_cfg, (__be32 *)fabric, add_len);
2398 }
2399
2400 /**
2401 * ipr_log_sis64_service_required_error - Log a sis64 service required error.
2402 * @ioa_cfg: ioa config struct
2403 * @hostrcb: hostrcb struct
2404 *
2405 * Return value:
2406 * none
2407 **/
ipr_log_sis64_service_required_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)2408 static void ipr_log_sis64_service_required_error(struct ipr_ioa_cfg *ioa_cfg,
2409 struct ipr_hostrcb *hostrcb)
2410 {
2411 struct ipr_hostrcb_type_41_error *error;
2412
2413 error = &hostrcb->hcam.u.error64.u.type_41_error;
2414
2415 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2416 ipr_err("Primary Failure Reason: %s\n", error->failure_reason);
2417 ipr_log_hex_data(ioa_cfg, error->data,
2418 be32_to_cpu(hostrcb->hcam.length) -
2419 (offsetof(struct ipr_hostrcb_error, u) +
2420 offsetof(struct ipr_hostrcb_type_41_error, data)));
2421 }
2422 /**
2423 * ipr_log_generic_error - Log an adapter error.
2424 * @ioa_cfg: ioa config struct
2425 * @hostrcb: hostrcb struct
2426 *
2427 * Return value:
2428 * none
2429 **/
ipr_log_generic_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)2430 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2431 struct ipr_hostrcb *hostrcb)
2432 {
2433 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2434 be32_to_cpu(hostrcb->hcam.length));
2435 }
2436
2437 /**
2438 * ipr_log_sis64_device_error - Log a cache error.
2439 * @ioa_cfg: ioa config struct
2440 * @hostrcb: hostrcb struct
2441 *
2442 * Return value:
2443 * none
2444 **/
ipr_log_sis64_device_error(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)2445 static void ipr_log_sis64_device_error(struct ipr_ioa_cfg *ioa_cfg,
2446 struct ipr_hostrcb *hostrcb)
2447 {
2448 struct ipr_hostrcb_type_21_error *error;
2449 char buffer[IPR_MAX_RES_PATH_LENGTH];
2450
2451 error = &hostrcb->hcam.u.error64.u.type_21_error;
2452
2453 ipr_err("-----Failing Device Information-----\n");
2454 ipr_err("World Wide Unique ID: %08X%08X%08X%08X\n",
2455 be32_to_cpu(error->wwn[0]), be32_to_cpu(error->wwn[1]),
2456 be32_to_cpu(error->wwn[2]), be32_to_cpu(error->wwn[3]));
2457 ipr_err("Device Resource Path: %s\n",
2458 __ipr_format_res_path(error->res_path,
2459 buffer, sizeof(buffer)));
2460 error->primary_problem_desc[sizeof(error->primary_problem_desc) - 1] = '\0';
2461 error->second_problem_desc[sizeof(error->second_problem_desc) - 1] = '\0';
2462 ipr_err("Primary Problem Description: %s\n", error->primary_problem_desc);
2463 ipr_err("Secondary Problem Description: %s\n", error->second_problem_desc);
2464 ipr_err("SCSI Sense Data:\n");
2465 ipr_log_hex_data(ioa_cfg, error->sense_data, sizeof(error->sense_data));
2466 ipr_err("SCSI Command Descriptor Block: \n");
2467 ipr_log_hex_data(ioa_cfg, error->cdb, sizeof(error->cdb));
2468
2469 ipr_err("Additional IOA Data:\n");
2470 ipr_log_hex_data(ioa_cfg, error->ioa_data, be32_to_cpu(error->length_of_error));
2471 }
2472
2473 /**
2474 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2475 * @ioasc: IOASC
2476 *
2477 * This function will return the index of into the ipr_error_table
2478 * for the specified IOASC. If the IOASC is not in the table,
2479 * 0 will be returned, which points to the entry used for unknown errors.
2480 *
2481 * Return value:
2482 * index into the ipr_error_table
2483 **/
ipr_get_error(u32 ioasc)2484 static u32 ipr_get_error(u32 ioasc)
2485 {
2486 int i;
2487
2488 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2489 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2490 return i;
2491
2492 return 0;
2493 }
2494
2495 /**
2496 * ipr_handle_log_data - Log an adapter error.
2497 * @ioa_cfg: ioa config struct
2498 * @hostrcb: hostrcb struct
2499 *
2500 * This function logs an adapter error to the system.
2501 *
2502 * Return value:
2503 * none
2504 **/
ipr_handle_log_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_hostrcb * hostrcb)2505 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2506 struct ipr_hostrcb *hostrcb)
2507 {
2508 u32 ioasc;
2509 int error_index;
2510 struct ipr_hostrcb_type_21_error *error;
2511
2512 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2513 return;
2514
2515 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2516 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2517
2518 if (ioa_cfg->sis64)
2519 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2520 else
2521 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2522
2523 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2524 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2525 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2526 scsi_report_bus_reset(ioa_cfg->host,
2527 hostrcb->hcam.u.error.fd_res_addr.bus);
2528 }
2529
2530 error_index = ipr_get_error(ioasc);
2531
2532 if (!ipr_error_table[error_index].log_hcam)
2533 return;
2534
2535 if (ioasc == IPR_IOASC_HW_CMD_FAILED &&
2536 hostrcb->hcam.overlay_id == IPR_HOST_RCB_OVERLAY_ID_21) {
2537 error = &hostrcb->hcam.u.error64.u.type_21_error;
2538
2539 if (((be32_to_cpu(error->sense_data[0]) & 0x0000ff00) >> 8) == ILLEGAL_REQUEST &&
2540 ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
2541 return;
2542 }
2543
2544 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2545
2546 /* Set indication we have logged an error */
2547 ioa_cfg->errors_logged++;
2548
2549 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2550 return;
2551 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2552 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2553
2554 switch (hostrcb->hcam.overlay_id) {
2555 case IPR_HOST_RCB_OVERLAY_ID_2:
2556 ipr_log_cache_error(ioa_cfg, hostrcb);
2557 break;
2558 case IPR_HOST_RCB_OVERLAY_ID_3:
2559 ipr_log_config_error(ioa_cfg, hostrcb);
2560 break;
2561 case IPR_HOST_RCB_OVERLAY_ID_4:
2562 case IPR_HOST_RCB_OVERLAY_ID_6:
2563 ipr_log_array_error(ioa_cfg, hostrcb);
2564 break;
2565 case IPR_HOST_RCB_OVERLAY_ID_7:
2566 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2567 break;
2568 case IPR_HOST_RCB_OVERLAY_ID_12:
2569 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2570 break;
2571 case IPR_HOST_RCB_OVERLAY_ID_13:
2572 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2573 break;
2574 case IPR_HOST_RCB_OVERLAY_ID_14:
2575 case IPR_HOST_RCB_OVERLAY_ID_16:
2576 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2577 break;
2578 case IPR_HOST_RCB_OVERLAY_ID_17:
2579 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2580 break;
2581 case IPR_HOST_RCB_OVERLAY_ID_20:
2582 ipr_log_fabric_error(ioa_cfg, hostrcb);
2583 break;
2584 case IPR_HOST_RCB_OVERLAY_ID_21:
2585 ipr_log_sis64_device_error(ioa_cfg, hostrcb);
2586 break;
2587 case IPR_HOST_RCB_OVERLAY_ID_23:
2588 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2589 break;
2590 case IPR_HOST_RCB_OVERLAY_ID_24:
2591 case IPR_HOST_RCB_OVERLAY_ID_26:
2592 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2593 break;
2594 case IPR_HOST_RCB_OVERLAY_ID_30:
2595 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2596 break;
2597 case IPR_HOST_RCB_OVERLAY_ID_41:
2598 ipr_log_sis64_service_required_error(ioa_cfg, hostrcb);
2599 break;
2600 case IPR_HOST_RCB_OVERLAY_ID_1:
2601 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2602 default:
2603 ipr_log_generic_error(ioa_cfg, hostrcb);
2604 break;
2605 }
2606 }
2607
ipr_get_free_hostrcb(struct ipr_ioa_cfg * ioa)2608 static struct ipr_hostrcb *ipr_get_free_hostrcb(struct ipr_ioa_cfg *ioa)
2609 {
2610 struct ipr_hostrcb *hostrcb;
2611
2612 hostrcb = list_first_entry_or_null(&ioa->hostrcb_free_q,
2613 struct ipr_hostrcb, queue);
2614
2615 if (unlikely(!hostrcb)) {
2616 dev_info(&ioa->pdev->dev, "Reclaiming async error buffers.");
2617 hostrcb = list_first_entry_or_null(&ioa->hostrcb_report_q,
2618 struct ipr_hostrcb, queue);
2619 }
2620
2621 list_del_init(&hostrcb->queue);
2622 return hostrcb;
2623 }
2624
2625 /**
2626 * ipr_process_error - Op done function for an adapter error log.
2627 * @ipr_cmd: ipr command struct
2628 *
2629 * This function is the op done function for an error log host
2630 * controlled async from the adapter. It will log the error and
2631 * send the HCAM back to the adapter.
2632 *
2633 * Return value:
2634 * none
2635 **/
ipr_process_error(struct ipr_cmnd * ipr_cmd)2636 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2637 {
2638 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2639 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2640 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2641 u32 fd_ioasc;
2642
2643 if (ioa_cfg->sis64)
2644 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2645 else
2646 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2647
2648 list_del_init(&hostrcb->queue);
2649 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2650
2651 if (!ioasc) {
2652 ipr_handle_log_data(ioa_cfg, hostrcb);
2653 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2654 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2655 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET &&
2656 ioasc != IPR_IOASC_ABORTED_CMD_TERM_BY_HOST) {
2657 dev_err(&ioa_cfg->pdev->dev,
2658 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2659 }
2660
2661 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_report_q);
2662 schedule_work(&ioa_cfg->work_q);
2663 hostrcb = ipr_get_free_hostrcb(ioa_cfg);
2664
2665 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2666 }
2667
2668 /**
2669 * ipr_timeout - An internally generated op has timed out.
2670 * @ipr_cmd: ipr command struct
2671 *
2672 * This function blocks host requests and initiates an
2673 * adapter reset.
2674 *
2675 * Return value:
2676 * none
2677 **/
ipr_timeout(struct timer_list * t)2678 static void ipr_timeout(struct timer_list *t)
2679 {
2680 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2681 unsigned long lock_flags = 0;
2682 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2683
2684 ENTER;
2685 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2686
2687 ioa_cfg->errors_logged++;
2688 dev_err(&ioa_cfg->pdev->dev,
2689 "Adapter being reset due to command timeout.\n");
2690
2691 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2692 ioa_cfg->sdt_state = GET_DUMP;
2693
2694 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2695 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2696
2697 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2698 LEAVE;
2699 }
2700
2701 /**
2702 * ipr_oper_timeout - Adapter timed out transitioning to operational
2703 * @ipr_cmd: ipr command struct
2704 *
2705 * This function blocks host requests and initiates an
2706 * adapter reset.
2707 *
2708 * Return value:
2709 * none
2710 **/
ipr_oper_timeout(struct timer_list * t)2711 static void ipr_oper_timeout(struct timer_list *t)
2712 {
2713 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
2714 unsigned long lock_flags = 0;
2715 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2716
2717 ENTER;
2718 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2719
2720 ioa_cfg->errors_logged++;
2721 dev_err(&ioa_cfg->pdev->dev,
2722 "Adapter timed out transitioning to operational.\n");
2723
2724 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2725 ioa_cfg->sdt_state = GET_DUMP;
2726
2727 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2728 if (ipr_fastfail)
2729 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2730 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2731 }
2732
2733 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2734 LEAVE;
2735 }
2736
2737 /**
2738 * ipr_find_ses_entry - Find matching SES in SES table
2739 * @res: resource entry struct of SES
2740 *
2741 * Return value:
2742 * pointer to SES table entry / NULL on failure
2743 **/
2744 static const struct ipr_ses_table_entry *
ipr_find_ses_entry(struct ipr_resource_entry * res)2745 ipr_find_ses_entry(struct ipr_resource_entry *res)
2746 {
2747 int i, j, matches;
2748 struct ipr_std_inq_vpids *vpids;
2749 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2750
2751 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2752 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2753 if (ste->compare_product_id_byte[j] == 'X') {
2754 vpids = &res->std_inq_data.vpids;
2755 if (vpids->product_id[j] == ste->product_id[j])
2756 matches++;
2757 else
2758 break;
2759 } else
2760 matches++;
2761 }
2762
2763 if (matches == IPR_PROD_ID_LEN)
2764 return ste;
2765 }
2766
2767 return NULL;
2768 }
2769
2770 /**
2771 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2772 * @ioa_cfg: ioa config struct
2773 * @bus: SCSI bus
2774 * @bus_width: bus width
2775 *
2776 * Return value:
2777 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2778 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2779 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2780 * max 160MHz = max 320MB/sec).
2781 **/
ipr_get_max_scsi_speed(struct ipr_ioa_cfg * ioa_cfg,u8 bus,u8 bus_width)2782 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2783 {
2784 struct ipr_resource_entry *res;
2785 const struct ipr_ses_table_entry *ste;
2786 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2787
2788 /* Loop through each config table entry in the config table buffer */
2789 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2790 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2791 continue;
2792
2793 if (bus != res->bus)
2794 continue;
2795
2796 if (!(ste = ipr_find_ses_entry(res)))
2797 continue;
2798
2799 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2800 }
2801
2802 return max_xfer_rate;
2803 }
2804
2805 /**
2806 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2807 * @ioa_cfg: ioa config struct
2808 * @max_delay: max delay in micro-seconds to wait
2809 *
2810 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2811 *
2812 * Return value:
2813 * 0 on success / other on failure
2814 **/
ipr_wait_iodbg_ack(struct ipr_ioa_cfg * ioa_cfg,int max_delay)2815 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2816 {
2817 volatile u32 pcii_reg;
2818 int delay = 1;
2819
2820 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2821 while (delay < max_delay) {
2822 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2823
2824 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2825 return 0;
2826
2827 /* udelay cannot be used if delay is more than a few milliseconds */
2828 if ((delay / 1000) > MAX_UDELAY_MS)
2829 mdelay(delay / 1000);
2830 else
2831 udelay(delay);
2832
2833 delay += delay;
2834 }
2835 return -EIO;
2836 }
2837
2838 /**
2839 * ipr_get_sis64_dump_data_section - Dump IOA memory
2840 * @ioa_cfg: ioa config struct
2841 * @start_addr: adapter address to dump
2842 * @dest: destination kernel buffer
2843 * @length_in_words: length to dump in 4 byte words
2844 *
2845 * Return value:
2846 * 0 on success
2847 **/
ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg * ioa_cfg,u32 start_addr,__be32 * dest,u32 length_in_words)2848 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2849 u32 start_addr,
2850 __be32 *dest, u32 length_in_words)
2851 {
2852 int i;
2853
2854 for (i = 0; i < length_in_words; i++) {
2855 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2856 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2857 dest++;
2858 }
2859
2860 return 0;
2861 }
2862
2863 /**
2864 * ipr_get_ldump_data_section - Dump IOA memory
2865 * @ioa_cfg: ioa config struct
2866 * @start_addr: adapter address to dump
2867 * @dest: destination kernel buffer
2868 * @length_in_words: length to dump in 4 byte words
2869 *
2870 * Return value:
2871 * 0 on success / -EIO on failure
2872 **/
ipr_get_ldump_data_section(struct ipr_ioa_cfg * ioa_cfg,u32 start_addr,__be32 * dest,u32 length_in_words)2873 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2874 u32 start_addr,
2875 __be32 *dest, u32 length_in_words)
2876 {
2877 volatile u32 temp_pcii_reg;
2878 int i, delay = 0;
2879
2880 if (ioa_cfg->sis64)
2881 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2882 dest, length_in_words);
2883
2884 /* Write IOA interrupt reg starting LDUMP state */
2885 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2886 ioa_cfg->regs.set_uproc_interrupt_reg32);
2887
2888 /* Wait for IO debug acknowledge */
2889 if (ipr_wait_iodbg_ack(ioa_cfg,
2890 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2891 dev_err(&ioa_cfg->pdev->dev,
2892 "IOA dump long data transfer timeout\n");
2893 return -EIO;
2894 }
2895
2896 /* Signal LDUMP interlocked - clear IO debug ack */
2897 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2898 ioa_cfg->regs.clr_interrupt_reg);
2899
2900 /* Write Mailbox with starting address */
2901 writel(start_addr, ioa_cfg->ioa_mailbox);
2902
2903 /* Signal address valid - clear IOA Reset alert */
2904 writel(IPR_UPROCI_RESET_ALERT,
2905 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2906
2907 for (i = 0; i < length_in_words; i++) {
2908 /* Wait for IO debug acknowledge */
2909 if (ipr_wait_iodbg_ack(ioa_cfg,
2910 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2911 dev_err(&ioa_cfg->pdev->dev,
2912 "IOA dump short data transfer timeout\n");
2913 return -EIO;
2914 }
2915
2916 /* Read data from mailbox and increment destination pointer */
2917 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2918 dest++;
2919
2920 /* For all but the last word of data, signal data received */
2921 if (i < (length_in_words - 1)) {
2922 /* Signal dump data received - Clear IO debug Ack */
2923 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2924 ioa_cfg->regs.clr_interrupt_reg);
2925 }
2926 }
2927
2928 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2929 writel(IPR_UPROCI_RESET_ALERT,
2930 ioa_cfg->regs.set_uproc_interrupt_reg32);
2931
2932 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2933 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2934
2935 /* Signal dump data received - Clear IO debug Ack */
2936 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2937 ioa_cfg->regs.clr_interrupt_reg);
2938
2939 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2940 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2941 temp_pcii_reg =
2942 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2943
2944 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2945 return 0;
2946
2947 udelay(10);
2948 delay += 10;
2949 }
2950
2951 return 0;
2952 }
2953
2954 #ifdef CONFIG_SCSI_IPR_DUMP
2955 /**
2956 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2957 * @ioa_cfg: ioa config struct
2958 * @pci_address: adapter address
2959 * @length: length of data to copy
2960 *
2961 * Copy data from PCI adapter to kernel buffer.
2962 * Note: length MUST be a 4 byte multiple
2963 * Return value:
2964 * 0 on success / other on failure
2965 **/
ipr_sdt_copy(struct ipr_ioa_cfg * ioa_cfg,unsigned long pci_address,u32 length)2966 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2967 unsigned long pci_address, u32 length)
2968 {
2969 int bytes_copied = 0;
2970 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2971 __be32 *page;
2972 unsigned long lock_flags = 0;
2973 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2974
2975 if (ioa_cfg->sis64)
2976 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2977 else
2978 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2979
2980 while (bytes_copied < length &&
2981 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2982 if (ioa_dump->page_offset >= PAGE_SIZE ||
2983 ioa_dump->page_offset == 0) {
2984 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2985
2986 if (!page) {
2987 ipr_trace;
2988 return bytes_copied;
2989 }
2990
2991 ioa_dump->page_offset = 0;
2992 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2993 ioa_dump->next_page_index++;
2994 } else
2995 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2996
2997 rem_len = length - bytes_copied;
2998 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2999 cur_len = min(rem_len, rem_page_len);
3000
3001 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3002 if (ioa_cfg->sdt_state == ABORT_DUMP) {
3003 rc = -EIO;
3004 } else {
3005 rc = ipr_get_ldump_data_section(ioa_cfg,
3006 pci_address + bytes_copied,
3007 &page[ioa_dump->page_offset / 4],
3008 (cur_len / sizeof(u32)));
3009 }
3010 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3011
3012 if (!rc) {
3013 ioa_dump->page_offset += cur_len;
3014 bytes_copied += cur_len;
3015 } else {
3016 ipr_trace;
3017 break;
3018 }
3019 schedule();
3020 }
3021
3022 return bytes_copied;
3023 }
3024
3025 /**
3026 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
3027 * @hdr: dump entry header struct
3028 *
3029 * Return value:
3030 * nothing
3031 **/
ipr_init_dump_entry_hdr(struct ipr_dump_entry_header * hdr)3032 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
3033 {
3034 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
3035 hdr->num_elems = 1;
3036 hdr->offset = sizeof(*hdr);
3037 hdr->status = IPR_DUMP_STATUS_SUCCESS;
3038 }
3039
3040 /**
3041 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
3042 * @ioa_cfg: ioa config struct
3043 * @driver_dump: driver dump struct
3044 *
3045 * Return value:
3046 * nothing
3047 **/
ipr_dump_ioa_type_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_driver_dump * driver_dump)3048 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
3049 struct ipr_driver_dump *driver_dump)
3050 {
3051 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3052
3053 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
3054 driver_dump->ioa_type_entry.hdr.len =
3055 sizeof(struct ipr_dump_ioa_type_entry) -
3056 sizeof(struct ipr_dump_entry_header);
3057 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3058 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
3059 driver_dump->ioa_type_entry.type = ioa_cfg->type;
3060 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
3061 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
3062 ucode_vpd->minor_release[1];
3063 driver_dump->hdr.num_entries++;
3064 }
3065
3066 /**
3067 * ipr_dump_version_data - Fill in the driver version in the dump.
3068 * @ioa_cfg: ioa config struct
3069 * @driver_dump: driver dump struct
3070 *
3071 * Return value:
3072 * nothing
3073 **/
ipr_dump_version_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_driver_dump * driver_dump)3074 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
3075 struct ipr_driver_dump *driver_dump)
3076 {
3077 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
3078 driver_dump->version_entry.hdr.len =
3079 sizeof(struct ipr_dump_version_entry) -
3080 sizeof(struct ipr_dump_entry_header);
3081 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3082 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
3083 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
3084 driver_dump->hdr.num_entries++;
3085 }
3086
3087 /**
3088 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
3089 * @ioa_cfg: ioa config struct
3090 * @driver_dump: driver dump struct
3091 *
3092 * Return value:
3093 * nothing
3094 **/
ipr_dump_trace_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_driver_dump * driver_dump)3095 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
3096 struct ipr_driver_dump *driver_dump)
3097 {
3098 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
3099 driver_dump->trace_entry.hdr.len =
3100 sizeof(struct ipr_dump_trace_entry) -
3101 sizeof(struct ipr_dump_entry_header);
3102 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3103 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
3104 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
3105 driver_dump->hdr.num_entries++;
3106 }
3107
3108 /**
3109 * ipr_dump_location_data - Fill in the IOA location in the dump.
3110 * @ioa_cfg: ioa config struct
3111 * @driver_dump: driver dump struct
3112 *
3113 * Return value:
3114 * nothing
3115 **/
ipr_dump_location_data(struct ipr_ioa_cfg * ioa_cfg,struct ipr_driver_dump * driver_dump)3116 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
3117 struct ipr_driver_dump *driver_dump)
3118 {
3119 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
3120 driver_dump->location_entry.hdr.len =
3121 sizeof(struct ipr_dump_location_entry) -
3122 sizeof(struct ipr_dump_entry_header);
3123 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
3124 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
3125 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
3126 driver_dump->hdr.num_entries++;
3127 }
3128
3129 /**
3130 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
3131 * @ioa_cfg: ioa config struct
3132 * @dump: dump struct
3133 *
3134 * Return value:
3135 * nothing
3136 **/
ipr_get_ioa_dump(struct ipr_ioa_cfg * ioa_cfg,struct ipr_dump * dump)3137 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
3138 {
3139 unsigned long start_addr, sdt_word;
3140 unsigned long lock_flags = 0;
3141 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
3142 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
3143 u32 num_entries, max_num_entries, start_off, end_off;
3144 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
3145 struct ipr_sdt *sdt;
3146 int valid = 1;
3147 int i;
3148
3149 ENTER;
3150
3151 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3152
3153 if (ioa_cfg->sdt_state != READ_DUMP) {
3154 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3155 return;
3156 }
3157
3158 if (ioa_cfg->sis64) {
3159 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3160 ssleep(IPR_DUMP_DELAY_SECONDS);
3161 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3162 }
3163
3164 start_addr = readl(ioa_cfg->ioa_mailbox);
3165
3166 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
3167 dev_err(&ioa_cfg->pdev->dev,
3168 "Invalid dump table format: %lx\n", start_addr);
3169 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3170 return;
3171 }
3172
3173 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
3174
3175 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
3176
3177 /* Initialize the overall dump header */
3178 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
3179 driver_dump->hdr.num_entries = 1;
3180 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
3181 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3182 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3183 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3184
3185 ipr_dump_version_data(ioa_cfg, driver_dump);
3186 ipr_dump_location_data(ioa_cfg, driver_dump);
3187 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3188 ipr_dump_trace_data(ioa_cfg, driver_dump);
3189
3190 /* Update dump_header */
3191 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3192
3193 /* IOA Dump entry */
3194 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3195 ioa_dump->hdr.len = 0;
3196 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3197 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3198
3199 /* First entries in sdt are actually a list of dump addresses and
3200 lengths to gather the real dump data. sdt represents the pointer
3201 to the ioa generated dump table. Dump data will be extracted based
3202 on entries in this table */
3203 sdt = &ioa_dump->sdt;
3204
3205 if (ioa_cfg->sis64) {
3206 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3207 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3208 } else {
3209 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3210 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3211 }
3212
3213 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3214 (max_num_entries * sizeof(struct ipr_sdt_entry));
3215 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3216 bytes_to_copy / sizeof(__be32));
3217
3218 /* Smart Dump table is ready to use and the first entry is valid */
3219 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3220 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3221 dev_err(&ioa_cfg->pdev->dev,
3222 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3223 rc, be32_to_cpu(sdt->hdr.state));
3224 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3225 ioa_cfg->sdt_state = DUMP_OBTAINED;
3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227 return;
3228 }
3229
3230 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3231
3232 if (num_entries > max_num_entries)
3233 num_entries = max_num_entries;
3234
3235 /* Update dump length to the actual data to be copied */
3236 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3237 if (ioa_cfg->sis64)
3238 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3239 else
3240 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3241
3242 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3243
3244 for (i = 0; i < num_entries; i++) {
3245 if (ioa_dump->hdr.len > max_dump_size) {
3246 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3247 break;
3248 }
3249
3250 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3251 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3252 if (ioa_cfg->sis64)
3253 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3254 else {
3255 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3256 end_off = be32_to_cpu(sdt->entry[i].end_token);
3257
3258 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3259 bytes_to_copy = end_off - start_off;
3260 else
3261 valid = 0;
3262 }
3263 if (valid) {
3264 if (bytes_to_copy > max_dump_size) {
3265 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3266 continue;
3267 }
3268
3269 /* Copy data from adapter to driver buffers */
3270 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3271 bytes_to_copy);
3272
3273 ioa_dump->hdr.len += bytes_copied;
3274
3275 if (bytes_copied != bytes_to_copy) {
3276 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3277 break;
3278 }
3279 }
3280 }
3281 }
3282
3283 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3284
3285 /* Update dump_header */
3286 driver_dump->hdr.len += ioa_dump->hdr.len;
3287 wmb();
3288 ioa_cfg->sdt_state = DUMP_OBTAINED;
3289 LEAVE;
3290 }
3291
3292 #else
3293 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3294 #endif
3295
3296 /**
3297 * ipr_release_dump - Free adapter dump memory
3298 * @kref: kref struct
3299 *
3300 * Return value:
3301 * nothing
3302 **/
ipr_release_dump(struct kref * kref)3303 static void ipr_release_dump(struct kref *kref)
3304 {
3305 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3306 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3307 unsigned long lock_flags = 0;
3308 int i;
3309
3310 ENTER;
3311 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3312 ioa_cfg->dump = NULL;
3313 ioa_cfg->sdt_state = INACTIVE;
3314 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3315
3316 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3317 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3318
3319 vfree(dump->ioa_dump.ioa_data);
3320 kfree(dump);
3321 LEAVE;
3322 }
3323
ipr_add_remove_thread(struct work_struct * work)3324 static void ipr_add_remove_thread(struct work_struct *work)
3325 {
3326 unsigned long lock_flags;
3327 struct ipr_resource_entry *res;
3328 struct scsi_device *sdev;
3329 struct ipr_ioa_cfg *ioa_cfg =
3330 container_of(work, struct ipr_ioa_cfg, scsi_add_work_q);
3331 u8 bus, target, lun;
3332 int did_work;
3333
3334 ENTER;
3335 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3336
3337 restart:
3338 do {
3339 did_work = 0;
3340 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
3341 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3342 return;
3343 }
3344
3345 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3346 if (res->del_from_ml && res->sdev) {
3347 did_work = 1;
3348 sdev = res->sdev;
3349 if (!scsi_device_get(sdev)) {
3350 if (!res->add_to_ml)
3351 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3352 else
3353 res->del_from_ml = 0;
3354 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3355 scsi_remove_device(sdev);
3356 scsi_device_put(sdev);
3357 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3358 }
3359 break;
3360 }
3361 }
3362 } while (did_work);
3363
3364 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3365 if (res->add_to_ml) {
3366 bus = res->bus;
3367 target = res->target;
3368 lun = res->lun;
3369 res->add_to_ml = 0;
3370 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3371 scsi_add_device(ioa_cfg->host, bus, target, lun);
3372 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3373 goto restart;
3374 }
3375 }
3376
3377 ioa_cfg->scan_done = 1;
3378 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3379 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3380 LEAVE;
3381 }
3382
3383 /**
3384 * ipr_worker_thread - Worker thread
3385 * @work: ioa config struct
3386 *
3387 * Called at task level from a work thread. This function takes care
3388 * of adding and removing device from the mid-layer as configuration
3389 * changes are detected by the adapter.
3390 *
3391 * Return value:
3392 * nothing
3393 **/
ipr_worker_thread(struct work_struct * work)3394 static void ipr_worker_thread(struct work_struct *work)
3395 {
3396 unsigned long lock_flags;
3397 struct ipr_dump *dump;
3398 struct ipr_ioa_cfg *ioa_cfg =
3399 container_of(work, struct ipr_ioa_cfg, work_q);
3400
3401 ENTER;
3402 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3403
3404 if (ioa_cfg->sdt_state == READ_DUMP) {
3405 dump = ioa_cfg->dump;
3406 if (!dump) {
3407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3408 return;
3409 }
3410 kref_get(&dump->kref);
3411 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3412 ipr_get_ioa_dump(ioa_cfg, dump);
3413 kref_put(&dump->kref, ipr_release_dump);
3414
3415 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3416 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3417 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3418 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3419 return;
3420 }
3421
3422 if (ioa_cfg->scsi_unblock) {
3423 ioa_cfg->scsi_unblock = 0;
3424 ioa_cfg->scsi_blocked = 0;
3425 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3426 scsi_unblock_requests(ioa_cfg->host);
3427 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3428 if (ioa_cfg->scsi_blocked)
3429 scsi_block_requests(ioa_cfg->host);
3430 }
3431
3432 if (!ioa_cfg->scan_enabled) {
3433 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3434 return;
3435 }
3436
3437 schedule_work(&ioa_cfg->scsi_add_work_q);
3438
3439 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3440 LEAVE;
3441 }
3442
3443 #ifdef CONFIG_SCSI_IPR_TRACE
3444 /**
3445 * ipr_read_trace - Dump the adapter trace
3446 * @filp: open sysfs file
3447 * @kobj: kobject struct
3448 * @bin_attr: bin_attribute struct
3449 * @buf: buffer
3450 * @off: offset
3451 * @count: buffer size
3452 *
3453 * Return value:
3454 * number of bytes printed to buffer
3455 **/
ipr_read_trace(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)3456 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3457 struct bin_attribute *bin_attr,
3458 char *buf, loff_t off, size_t count)
3459 {
3460 struct device *dev = container_of(kobj, struct device, kobj);
3461 struct Scsi_Host *shost = class_to_shost(dev);
3462 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3463 unsigned long lock_flags = 0;
3464 ssize_t ret;
3465
3466 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3467 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3468 IPR_TRACE_SIZE);
3469 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3470
3471 return ret;
3472 }
3473
3474 static struct bin_attribute ipr_trace_attr = {
3475 .attr = {
3476 .name = "trace",
3477 .mode = S_IRUGO,
3478 },
3479 .size = 0,
3480 .read = ipr_read_trace,
3481 };
3482 #endif
3483
3484 /**
3485 * ipr_show_fw_version - Show the firmware version
3486 * @dev: class device struct
3487 * @buf: buffer
3488 *
3489 * Return value:
3490 * number of bytes printed to buffer
3491 **/
ipr_show_fw_version(struct device * dev,struct device_attribute * attr,char * buf)3492 static ssize_t ipr_show_fw_version(struct device *dev,
3493 struct device_attribute *attr, char *buf)
3494 {
3495 struct Scsi_Host *shost = class_to_shost(dev);
3496 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3497 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3498 unsigned long lock_flags = 0;
3499 int len;
3500
3501 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3502 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3503 ucode_vpd->major_release, ucode_vpd->card_type,
3504 ucode_vpd->minor_release[0],
3505 ucode_vpd->minor_release[1]);
3506 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3507 return len;
3508 }
3509
3510 static struct device_attribute ipr_fw_version_attr = {
3511 .attr = {
3512 .name = "fw_version",
3513 .mode = S_IRUGO,
3514 },
3515 .show = ipr_show_fw_version,
3516 };
3517
3518 /**
3519 * ipr_show_log_level - Show the adapter's error logging level
3520 * @dev: class device struct
3521 * @buf: buffer
3522 *
3523 * Return value:
3524 * number of bytes printed to buffer
3525 **/
ipr_show_log_level(struct device * dev,struct device_attribute * attr,char * buf)3526 static ssize_t ipr_show_log_level(struct device *dev,
3527 struct device_attribute *attr, char *buf)
3528 {
3529 struct Scsi_Host *shost = class_to_shost(dev);
3530 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3531 unsigned long lock_flags = 0;
3532 int len;
3533
3534 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3535 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3536 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3537 return len;
3538 }
3539
3540 /**
3541 * ipr_store_log_level - Change the adapter's error logging level
3542 * @dev: class device struct
3543 * @buf: buffer
3544 *
3545 * Return value:
3546 * number of bytes printed to buffer
3547 **/
ipr_store_log_level(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3548 static ssize_t ipr_store_log_level(struct device *dev,
3549 struct device_attribute *attr,
3550 const char *buf, size_t count)
3551 {
3552 struct Scsi_Host *shost = class_to_shost(dev);
3553 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3554 unsigned long lock_flags = 0;
3555
3556 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3557 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3558 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3559 return strlen(buf);
3560 }
3561
3562 static struct device_attribute ipr_log_level_attr = {
3563 .attr = {
3564 .name = "log_level",
3565 .mode = S_IRUGO | S_IWUSR,
3566 },
3567 .show = ipr_show_log_level,
3568 .store = ipr_store_log_level
3569 };
3570
3571 /**
3572 * ipr_store_diagnostics - IOA Diagnostics interface
3573 * @dev: device struct
3574 * @buf: buffer
3575 * @count: buffer size
3576 *
3577 * This function will reset the adapter and wait a reasonable
3578 * amount of time for any errors that the adapter might log.
3579 *
3580 * Return value:
3581 * count on success / other on failure
3582 **/
ipr_store_diagnostics(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3583 static ssize_t ipr_store_diagnostics(struct device *dev,
3584 struct device_attribute *attr,
3585 const char *buf, size_t count)
3586 {
3587 struct Scsi_Host *shost = class_to_shost(dev);
3588 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3589 unsigned long lock_flags = 0;
3590 int rc = count;
3591
3592 if (!capable(CAP_SYS_ADMIN))
3593 return -EACCES;
3594
3595 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3596 while (ioa_cfg->in_reset_reload) {
3597 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3598 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3599 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3600 }
3601
3602 ioa_cfg->errors_logged = 0;
3603 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3604
3605 if (ioa_cfg->in_reset_reload) {
3606 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3607 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3608
3609 /* Wait for a second for any errors to be logged */
3610 msleep(1000);
3611 } else {
3612 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3613 return -EIO;
3614 }
3615
3616 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3617 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3618 rc = -EIO;
3619 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3620
3621 return rc;
3622 }
3623
3624 static struct device_attribute ipr_diagnostics_attr = {
3625 .attr = {
3626 .name = "run_diagnostics",
3627 .mode = S_IWUSR,
3628 },
3629 .store = ipr_store_diagnostics
3630 };
3631
3632 /**
3633 * ipr_show_adapter_state - Show the adapter's state
3634 * @class_dev: device struct
3635 * @buf: buffer
3636 *
3637 * Return value:
3638 * number of bytes printed to buffer
3639 **/
ipr_show_adapter_state(struct device * dev,struct device_attribute * attr,char * buf)3640 static ssize_t ipr_show_adapter_state(struct device *dev,
3641 struct device_attribute *attr, char *buf)
3642 {
3643 struct Scsi_Host *shost = class_to_shost(dev);
3644 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3645 unsigned long lock_flags = 0;
3646 int len;
3647
3648 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3649 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3650 len = snprintf(buf, PAGE_SIZE, "offline\n");
3651 else
3652 len = snprintf(buf, PAGE_SIZE, "online\n");
3653 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3654 return len;
3655 }
3656
3657 /**
3658 * ipr_store_adapter_state - Change adapter state
3659 * @dev: device struct
3660 * @buf: buffer
3661 * @count: buffer size
3662 *
3663 * This function will change the adapter's state.
3664 *
3665 * Return value:
3666 * count on success / other on failure
3667 **/
ipr_store_adapter_state(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3668 static ssize_t ipr_store_adapter_state(struct device *dev,
3669 struct device_attribute *attr,
3670 const char *buf, size_t count)
3671 {
3672 struct Scsi_Host *shost = class_to_shost(dev);
3673 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3674 unsigned long lock_flags;
3675 int result = count, i;
3676
3677 if (!capable(CAP_SYS_ADMIN))
3678 return -EACCES;
3679
3680 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3681 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3682 !strncmp(buf, "online", 6)) {
3683 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3684 spin_lock(&ioa_cfg->hrrq[i]._lock);
3685 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3686 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3687 }
3688 wmb();
3689 ioa_cfg->reset_retries = 0;
3690 ioa_cfg->in_ioa_bringdown = 0;
3691 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3692 }
3693 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3694 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3695
3696 return result;
3697 }
3698
3699 static struct device_attribute ipr_ioa_state_attr = {
3700 .attr = {
3701 .name = "online_state",
3702 .mode = S_IRUGO | S_IWUSR,
3703 },
3704 .show = ipr_show_adapter_state,
3705 .store = ipr_store_adapter_state
3706 };
3707
3708 /**
3709 * ipr_store_reset_adapter - Reset the adapter
3710 * @dev: device struct
3711 * @buf: buffer
3712 * @count: buffer size
3713 *
3714 * This function will reset the adapter.
3715 *
3716 * Return value:
3717 * count on success / other on failure
3718 **/
ipr_store_reset_adapter(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3719 static ssize_t ipr_store_reset_adapter(struct device *dev,
3720 struct device_attribute *attr,
3721 const char *buf, size_t count)
3722 {
3723 struct Scsi_Host *shost = class_to_shost(dev);
3724 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3725 unsigned long lock_flags;
3726 int result = count;
3727
3728 if (!capable(CAP_SYS_ADMIN))
3729 return -EACCES;
3730
3731 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3732 if (!ioa_cfg->in_reset_reload)
3733 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3734 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3735 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3736
3737 return result;
3738 }
3739
3740 static struct device_attribute ipr_ioa_reset_attr = {
3741 .attr = {
3742 .name = "reset_host",
3743 .mode = S_IWUSR,
3744 },
3745 .store = ipr_store_reset_adapter
3746 };
3747
3748 static int ipr_iopoll(struct irq_poll *iop, int budget);
3749 /**
3750 * ipr_show_iopoll_weight - Show ipr polling mode
3751 * @dev: class device struct
3752 * @buf: buffer
3753 *
3754 * Return value:
3755 * number of bytes printed to buffer
3756 **/
ipr_show_iopoll_weight(struct device * dev,struct device_attribute * attr,char * buf)3757 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3758 struct device_attribute *attr, char *buf)
3759 {
3760 struct Scsi_Host *shost = class_to_shost(dev);
3761 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3762 unsigned long lock_flags = 0;
3763 int len;
3764
3765 spin_lock_irqsave(shost->host_lock, lock_flags);
3766 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3767 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3768
3769 return len;
3770 }
3771
3772 /**
3773 * ipr_store_iopoll_weight - Change the adapter's polling mode
3774 * @dev: class device struct
3775 * @buf: buffer
3776 *
3777 * Return value:
3778 * number of bytes printed to buffer
3779 **/
ipr_store_iopoll_weight(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)3780 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3781 struct device_attribute *attr,
3782 const char *buf, size_t count)
3783 {
3784 struct Scsi_Host *shost = class_to_shost(dev);
3785 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3786 unsigned long user_iopoll_weight;
3787 unsigned long lock_flags = 0;
3788 int i;
3789
3790 if (!ioa_cfg->sis64) {
3791 dev_info(&ioa_cfg->pdev->dev, "irq_poll not supported on this adapter\n");
3792 return -EINVAL;
3793 }
3794 if (kstrtoul(buf, 10, &user_iopoll_weight))
3795 return -EINVAL;
3796
3797 if (user_iopoll_weight > 256) {
3798 dev_info(&ioa_cfg->pdev->dev, "Invalid irq_poll weight. It must be less than 256\n");
3799 return -EINVAL;
3800 }
3801
3802 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3803 dev_info(&ioa_cfg->pdev->dev, "Current irq_poll weight has the same weight\n");
3804 return strlen(buf);
3805 }
3806
3807 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3808 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3809 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
3810 }
3811
3812 spin_lock_irqsave(shost->host_lock, lock_flags);
3813 ioa_cfg->iopoll_weight = user_iopoll_weight;
3814 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3815 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3816 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
3817 ioa_cfg->iopoll_weight, ipr_iopoll);
3818 }
3819 }
3820 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3821
3822 return strlen(buf);
3823 }
3824
3825 static struct device_attribute ipr_iopoll_weight_attr = {
3826 .attr = {
3827 .name = "iopoll_weight",
3828 .mode = S_IRUGO | S_IWUSR,
3829 },
3830 .show = ipr_show_iopoll_weight,
3831 .store = ipr_store_iopoll_weight
3832 };
3833
3834 /**
3835 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3836 * @buf_len: buffer length
3837 *
3838 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3839 * list to use for microcode download
3840 *
3841 * Return value:
3842 * pointer to sglist / NULL on failure
3843 **/
ipr_alloc_ucode_buffer(int buf_len)3844 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3845 {
3846 int sg_size, order;
3847 struct ipr_sglist *sglist;
3848
3849 /* Get the minimum size per scatter/gather element */
3850 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3851
3852 /* Get the actual size per element */
3853 order = get_order(sg_size);
3854
3855 /* Allocate a scatter/gather list for the DMA */
3856 sglist = kzalloc(sizeof(struct ipr_sglist), GFP_KERNEL);
3857 if (sglist == NULL) {
3858 ipr_trace;
3859 return NULL;
3860 }
3861 sglist->order = order;
3862 sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL,
3863 &sglist->num_sg);
3864 if (!sglist->scatterlist) {
3865 kfree(sglist);
3866 return NULL;
3867 }
3868
3869 return sglist;
3870 }
3871
3872 /**
3873 * ipr_free_ucode_buffer - Frees a microcode download buffer
3874 * @p_dnld: scatter/gather list pointer
3875 *
3876 * Free a DMA'able ucode download buffer previously allocated with
3877 * ipr_alloc_ucode_buffer
3878 *
3879 * Return value:
3880 * nothing
3881 **/
ipr_free_ucode_buffer(struct ipr_sglist * sglist)3882 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3883 {
3884 sgl_free_order(sglist->scatterlist, sglist->order);
3885 kfree(sglist);
3886 }
3887
3888 /**
3889 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3890 * @sglist: scatter/gather list pointer
3891 * @buffer: buffer pointer
3892 * @len: buffer length
3893 *
3894 * Copy a microcode image from a user buffer into a buffer allocated by
3895 * ipr_alloc_ucode_buffer
3896 *
3897 * Return value:
3898 * 0 on success / other on failure
3899 **/
ipr_copy_ucode_buffer(struct ipr_sglist * sglist,u8 * buffer,u32 len)3900 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3901 u8 *buffer, u32 len)
3902 {
3903 int bsize_elem, i, result = 0;
3904 struct scatterlist *sg;
3905 void *kaddr;
3906
3907 /* Determine the actual number of bytes per element */
3908 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3909
3910 sg = sglist->scatterlist;
3911
3912 for (i = 0; i < (len / bsize_elem); i++, sg = sg_next(sg),
3913 buffer += bsize_elem) {
3914 struct page *page = sg_page(sg);
3915
3916 kaddr = kmap(page);
3917 memcpy(kaddr, buffer, bsize_elem);
3918 kunmap(page);
3919
3920 sg->length = bsize_elem;
3921
3922 if (result != 0) {
3923 ipr_trace;
3924 return result;
3925 }
3926 }
3927
3928 if (len % bsize_elem) {
3929 struct page *page = sg_page(sg);
3930
3931 kaddr = kmap(page);
3932 memcpy(kaddr, buffer, len % bsize_elem);
3933 kunmap(page);
3934
3935 sg->length = len % bsize_elem;
3936 }
3937
3938 sglist->buffer_len = len;
3939 return result;
3940 }
3941
3942 /**
3943 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3944 * @ipr_cmd: ipr command struct
3945 * @sglist: scatter/gather list
3946 *
3947 * Builds a microcode download IOA data list (IOADL).
3948 *
3949 **/
ipr_build_ucode_ioadl64(struct ipr_cmnd * ipr_cmd,struct ipr_sglist * sglist)3950 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3951 struct ipr_sglist *sglist)
3952 {
3953 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3954 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3955 struct scatterlist *scatterlist = sglist->scatterlist;
3956 struct scatterlist *sg;
3957 int i;
3958
3959 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3960 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3961 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3962
3963 ioarcb->ioadl_len =
3964 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3965 for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) {
3966 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3967 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
3968 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
3969 }
3970
3971 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3972 }
3973
3974 /**
3975 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3976 * @ipr_cmd: ipr command struct
3977 * @sglist: scatter/gather list
3978 *
3979 * Builds a microcode download IOA data list (IOADL).
3980 *
3981 **/
ipr_build_ucode_ioadl(struct ipr_cmnd * ipr_cmd,struct ipr_sglist * sglist)3982 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3983 struct ipr_sglist *sglist)
3984 {
3985 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3986 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3987 struct scatterlist *scatterlist = sglist->scatterlist;
3988 struct scatterlist *sg;
3989 int i;
3990
3991 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3992 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3993 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3994
3995 ioarcb->ioadl_len =
3996 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3997
3998 for_each_sg(scatterlist, sg, ipr_cmd->dma_use_sg, i) {
3999 ioadl[i].flags_and_data_len =
4000 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(sg));
4001 ioadl[i].address =
4002 cpu_to_be32(sg_dma_address(sg));
4003 }
4004
4005 ioadl[i-1].flags_and_data_len |=
4006 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
4007 }
4008
4009 /**
4010 * ipr_update_ioa_ucode - Update IOA's microcode
4011 * @ioa_cfg: ioa config struct
4012 * @sglist: scatter/gather list
4013 *
4014 * Initiate an adapter reset to update the IOA's microcode
4015 *
4016 * Return value:
4017 * 0 on success / -EIO on failure
4018 **/
ipr_update_ioa_ucode(struct ipr_ioa_cfg * ioa_cfg,struct ipr_sglist * sglist)4019 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
4020 struct ipr_sglist *sglist)
4021 {
4022 unsigned long lock_flags;
4023
4024 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4025 while (ioa_cfg->in_reset_reload) {
4026 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4027 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4028 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4029 }
4030
4031 if (ioa_cfg->ucode_sglist) {
4032 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4033 dev_err(&ioa_cfg->pdev->dev,
4034 "Microcode download already in progress\n");
4035 return -EIO;
4036 }
4037
4038 sglist->num_dma_sg = dma_map_sg(&ioa_cfg->pdev->dev,
4039 sglist->scatterlist, sglist->num_sg,
4040 DMA_TO_DEVICE);
4041
4042 if (!sglist->num_dma_sg) {
4043 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4044 dev_err(&ioa_cfg->pdev->dev,
4045 "Failed to map microcode download buffer!\n");
4046 return -EIO;
4047 }
4048
4049 ioa_cfg->ucode_sglist = sglist;
4050 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
4051 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4052 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4053
4054 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4055 ioa_cfg->ucode_sglist = NULL;
4056 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4057 return 0;
4058 }
4059
4060 /**
4061 * ipr_store_update_fw - Update the firmware on the adapter
4062 * @class_dev: device struct
4063 * @buf: buffer
4064 * @count: buffer size
4065 *
4066 * This function will update the firmware on the adapter.
4067 *
4068 * Return value:
4069 * count on success / other on failure
4070 **/
ipr_store_update_fw(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4071 static ssize_t ipr_store_update_fw(struct device *dev,
4072 struct device_attribute *attr,
4073 const char *buf, size_t count)
4074 {
4075 struct Scsi_Host *shost = class_to_shost(dev);
4076 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4077 struct ipr_ucode_image_header *image_hdr;
4078 const struct firmware *fw_entry;
4079 struct ipr_sglist *sglist;
4080 char fname[100];
4081 char *src;
4082 char *endline;
4083 int result, dnld_size;
4084
4085 if (!capable(CAP_SYS_ADMIN))
4086 return -EACCES;
4087
4088 snprintf(fname, sizeof(fname), "%s", buf);
4089
4090 endline = strchr(fname, '\n');
4091 if (endline)
4092 *endline = '\0';
4093
4094 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
4095 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
4096 return -EIO;
4097 }
4098
4099 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
4100
4101 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
4102 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
4103 sglist = ipr_alloc_ucode_buffer(dnld_size);
4104
4105 if (!sglist) {
4106 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
4107 release_firmware(fw_entry);
4108 return -ENOMEM;
4109 }
4110
4111 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
4112
4113 if (result) {
4114 dev_err(&ioa_cfg->pdev->dev,
4115 "Microcode buffer copy to DMA buffer failed\n");
4116 goto out;
4117 }
4118
4119 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
4120
4121 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
4122
4123 if (!result)
4124 result = count;
4125 out:
4126 ipr_free_ucode_buffer(sglist);
4127 release_firmware(fw_entry);
4128 return result;
4129 }
4130
4131 static struct device_attribute ipr_update_fw_attr = {
4132 .attr = {
4133 .name = "update_fw",
4134 .mode = S_IWUSR,
4135 },
4136 .store = ipr_store_update_fw
4137 };
4138
4139 /**
4140 * ipr_show_fw_type - Show the adapter's firmware type.
4141 * @dev: class device struct
4142 * @buf: buffer
4143 *
4144 * Return value:
4145 * number of bytes printed to buffer
4146 **/
ipr_show_fw_type(struct device * dev,struct device_attribute * attr,char * buf)4147 static ssize_t ipr_show_fw_type(struct device *dev,
4148 struct device_attribute *attr, char *buf)
4149 {
4150 struct Scsi_Host *shost = class_to_shost(dev);
4151 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4152 unsigned long lock_flags = 0;
4153 int len;
4154
4155 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4156 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
4157 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4158 return len;
4159 }
4160
4161 static struct device_attribute ipr_ioa_fw_type_attr = {
4162 .attr = {
4163 .name = "fw_type",
4164 .mode = S_IRUGO,
4165 },
4166 .show = ipr_show_fw_type
4167 };
4168
ipr_read_async_err_log(struct file * filep,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)4169 static ssize_t ipr_read_async_err_log(struct file *filep, struct kobject *kobj,
4170 struct bin_attribute *bin_attr, char *buf,
4171 loff_t off, size_t count)
4172 {
4173 struct device *cdev = container_of(kobj, struct device, kobj);
4174 struct Scsi_Host *shost = class_to_shost(cdev);
4175 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4176 struct ipr_hostrcb *hostrcb;
4177 unsigned long lock_flags = 0;
4178 int ret;
4179
4180 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4181 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4182 struct ipr_hostrcb, queue);
4183 if (!hostrcb) {
4184 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4185 return 0;
4186 }
4187 ret = memory_read_from_buffer(buf, count, &off, &hostrcb->hcam,
4188 sizeof(hostrcb->hcam));
4189 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4190 return ret;
4191 }
4192
ipr_next_async_err_log(struct file * filep,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)4193 static ssize_t ipr_next_async_err_log(struct file *filep, struct kobject *kobj,
4194 struct bin_attribute *bin_attr, char *buf,
4195 loff_t off, size_t count)
4196 {
4197 struct device *cdev = container_of(kobj, struct device, kobj);
4198 struct Scsi_Host *shost = class_to_shost(cdev);
4199 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4200 struct ipr_hostrcb *hostrcb;
4201 unsigned long lock_flags = 0;
4202
4203 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4204 hostrcb = list_first_entry_or_null(&ioa_cfg->hostrcb_report_q,
4205 struct ipr_hostrcb, queue);
4206 if (!hostrcb) {
4207 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4208 return count;
4209 }
4210
4211 /* Reclaim hostrcb before exit */
4212 list_move_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
4213 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4214 return count;
4215 }
4216
4217 static struct bin_attribute ipr_ioa_async_err_log = {
4218 .attr = {
4219 .name = "async_err_log",
4220 .mode = S_IRUGO | S_IWUSR,
4221 },
4222 .size = 0,
4223 .read = ipr_read_async_err_log,
4224 .write = ipr_next_async_err_log
4225 };
4226
4227 static struct device_attribute *ipr_ioa_attrs[] = {
4228 &ipr_fw_version_attr,
4229 &ipr_log_level_attr,
4230 &ipr_diagnostics_attr,
4231 &ipr_ioa_state_attr,
4232 &ipr_ioa_reset_attr,
4233 &ipr_update_fw_attr,
4234 &ipr_ioa_fw_type_attr,
4235 &ipr_iopoll_weight_attr,
4236 NULL,
4237 };
4238
4239 #ifdef CONFIG_SCSI_IPR_DUMP
4240 /**
4241 * ipr_read_dump - Dump the adapter
4242 * @filp: open sysfs file
4243 * @kobj: kobject struct
4244 * @bin_attr: bin_attribute struct
4245 * @buf: buffer
4246 * @off: offset
4247 * @count: buffer size
4248 *
4249 * Return value:
4250 * number of bytes printed to buffer
4251 **/
ipr_read_dump(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)4252 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4253 struct bin_attribute *bin_attr,
4254 char *buf, loff_t off, size_t count)
4255 {
4256 struct device *cdev = container_of(kobj, struct device, kobj);
4257 struct Scsi_Host *shost = class_to_shost(cdev);
4258 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4259 struct ipr_dump *dump;
4260 unsigned long lock_flags = 0;
4261 char *src;
4262 int len, sdt_end;
4263 size_t rc = count;
4264
4265 if (!capable(CAP_SYS_ADMIN))
4266 return -EACCES;
4267
4268 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4269 dump = ioa_cfg->dump;
4270
4271 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4272 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4273 return 0;
4274 }
4275 kref_get(&dump->kref);
4276 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4277
4278 if (off > dump->driver_dump.hdr.len) {
4279 kref_put(&dump->kref, ipr_release_dump);
4280 return 0;
4281 }
4282
4283 if (off + count > dump->driver_dump.hdr.len) {
4284 count = dump->driver_dump.hdr.len - off;
4285 rc = count;
4286 }
4287
4288 if (count && off < sizeof(dump->driver_dump)) {
4289 if (off + count > sizeof(dump->driver_dump))
4290 len = sizeof(dump->driver_dump) - off;
4291 else
4292 len = count;
4293 src = (u8 *)&dump->driver_dump + off;
4294 memcpy(buf, src, len);
4295 buf += len;
4296 off += len;
4297 count -= len;
4298 }
4299
4300 off -= sizeof(dump->driver_dump);
4301
4302 if (ioa_cfg->sis64)
4303 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4304 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4305 sizeof(struct ipr_sdt_entry));
4306 else
4307 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4308 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4309
4310 if (count && off < sdt_end) {
4311 if (off + count > sdt_end)
4312 len = sdt_end - off;
4313 else
4314 len = count;
4315 src = (u8 *)&dump->ioa_dump + off;
4316 memcpy(buf, src, len);
4317 buf += len;
4318 off += len;
4319 count -= len;
4320 }
4321
4322 off -= sdt_end;
4323
4324 while (count) {
4325 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4326 len = PAGE_ALIGN(off) - off;
4327 else
4328 len = count;
4329 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4330 src += off & ~PAGE_MASK;
4331 memcpy(buf, src, len);
4332 buf += len;
4333 off += len;
4334 count -= len;
4335 }
4336
4337 kref_put(&dump->kref, ipr_release_dump);
4338 return rc;
4339 }
4340
4341 /**
4342 * ipr_alloc_dump - Prepare for adapter dump
4343 * @ioa_cfg: ioa config struct
4344 *
4345 * Return value:
4346 * 0 on success / other on failure
4347 **/
ipr_alloc_dump(struct ipr_ioa_cfg * ioa_cfg)4348 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4349 {
4350 struct ipr_dump *dump;
4351 __be32 **ioa_data;
4352 unsigned long lock_flags = 0;
4353
4354 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4355
4356 if (!dump) {
4357 ipr_err("Dump memory allocation failed\n");
4358 return -ENOMEM;
4359 }
4360
4361 if (ioa_cfg->sis64)
4362 ioa_data = vmalloc(array_size(IPR_FMT3_MAX_NUM_DUMP_PAGES,
4363 sizeof(__be32 *)));
4364 else
4365 ioa_data = vmalloc(array_size(IPR_FMT2_MAX_NUM_DUMP_PAGES,
4366 sizeof(__be32 *)));
4367
4368 if (!ioa_data) {
4369 ipr_err("Dump memory allocation failed\n");
4370 kfree(dump);
4371 return -ENOMEM;
4372 }
4373
4374 dump->ioa_dump.ioa_data = ioa_data;
4375
4376 kref_init(&dump->kref);
4377 dump->ioa_cfg = ioa_cfg;
4378
4379 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4380
4381 if (INACTIVE != ioa_cfg->sdt_state) {
4382 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4383 vfree(dump->ioa_dump.ioa_data);
4384 kfree(dump);
4385 return 0;
4386 }
4387
4388 ioa_cfg->dump = dump;
4389 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4390 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4391 ioa_cfg->dump_taken = 1;
4392 schedule_work(&ioa_cfg->work_q);
4393 }
4394 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4395
4396 return 0;
4397 }
4398
4399 /**
4400 * ipr_free_dump - Free adapter dump memory
4401 * @ioa_cfg: ioa config struct
4402 *
4403 * Return value:
4404 * 0 on success / other on failure
4405 **/
ipr_free_dump(struct ipr_ioa_cfg * ioa_cfg)4406 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4407 {
4408 struct ipr_dump *dump;
4409 unsigned long lock_flags = 0;
4410
4411 ENTER;
4412
4413 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4414 dump = ioa_cfg->dump;
4415 if (!dump) {
4416 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4417 return 0;
4418 }
4419
4420 ioa_cfg->dump = NULL;
4421 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4422
4423 kref_put(&dump->kref, ipr_release_dump);
4424
4425 LEAVE;
4426 return 0;
4427 }
4428
4429 /**
4430 * ipr_write_dump - Setup dump state of adapter
4431 * @filp: open sysfs file
4432 * @kobj: kobject struct
4433 * @bin_attr: bin_attribute struct
4434 * @buf: buffer
4435 * @off: offset
4436 * @count: buffer size
4437 *
4438 * Return value:
4439 * number of bytes printed to buffer
4440 **/
ipr_write_dump(struct file * filp,struct kobject * kobj,struct bin_attribute * bin_attr,char * buf,loff_t off,size_t count)4441 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4442 struct bin_attribute *bin_attr,
4443 char *buf, loff_t off, size_t count)
4444 {
4445 struct device *cdev = container_of(kobj, struct device, kobj);
4446 struct Scsi_Host *shost = class_to_shost(cdev);
4447 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4448 int rc;
4449
4450 if (!capable(CAP_SYS_ADMIN))
4451 return -EACCES;
4452
4453 if (buf[0] == '1')
4454 rc = ipr_alloc_dump(ioa_cfg);
4455 else if (buf[0] == '0')
4456 rc = ipr_free_dump(ioa_cfg);
4457 else
4458 return -EINVAL;
4459
4460 if (rc)
4461 return rc;
4462 else
4463 return count;
4464 }
4465
4466 static struct bin_attribute ipr_dump_attr = {
4467 .attr = {
4468 .name = "dump",
4469 .mode = S_IRUSR | S_IWUSR,
4470 },
4471 .size = 0,
4472 .read = ipr_read_dump,
4473 .write = ipr_write_dump
4474 };
4475 #else
ipr_free_dump(struct ipr_ioa_cfg * ioa_cfg)4476 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4477 #endif
4478
4479 /**
4480 * ipr_change_queue_depth - Change the device's queue depth
4481 * @sdev: scsi device struct
4482 * @qdepth: depth to set
4483 * @reason: calling context
4484 *
4485 * Return value:
4486 * actual depth set
4487 **/
ipr_change_queue_depth(struct scsi_device * sdev,int qdepth)4488 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth)
4489 {
4490 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4491 struct ipr_resource_entry *res;
4492 unsigned long lock_flags = 0;
4493
4494 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4495 res = (struct ipr_resource_entry *)sdev->hostdata;
4496
4497 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4498 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4499 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4500
4501 scsi_change_queue_depth(sdev, qdepth);
4502 return sdev->queue_depth;
4503 }
4504
4505 /**
4506 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4507 * @dev: device struct
4508 * @attr: device attribute structure
4509 * @buf: buffer
4510 *
4511 * Return value:
4512 * number of bytes printed to buffer
4513 **/
ipr_show_adapter_handle(struct device * dev,struct device_attribute * attr,char * buf)4514 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4515 {
4516 struct scsi_device *sdev = to_scsi_device(dev);
4517 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4518 struct ipr_resource_entry *res;
4519 unsigned long lock_flags = 0;
4520 ssize_t len = -ENXIO;
4521
4522 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4523 res = (struct ipr_resource_entry *)sdev->hostdata;
4524 if (res)
4525 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4526 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4527 return len;
4528 }
4529
4530 static struct device_attribute ipr_adapter_handle_attr = {
4531 .attr = {
4532 .name = "adapter_handle",
4533 .mode = S_IRUSR,
4534 },
4535 .show = ipr_show_adapter_handle
4536 };
4537
4538 /**
4539 * ipr_show_resource_path - Show the resource path or the resource address for
4540 * this device.
4541 * @dev: device struct
4542 * @attr: device attribute structure
4543 * @buf: buffer
4544 *
4545 * Return value:
4546 * number of bytes printed to buffer
4547 **/
ipr_show_resource_path(struct device * dev,struct device_attribute * attr,char * buf)4548 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4549 {
4550 struct scsi_device *sdev = to_scsi_device(dev);
4551 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4552 struct ipr_resource_entry *res;
4553 unsigned long lock_flags = 0;
4554 ssize_t len = -ENXIO;
4555 char buffer[IPR_MAX_RES_PATH_LENGTH];
4556
4557 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4558 res = (struct ipr_resource_entry *)sdev->hostdata;
4559 if (res && ioa_cfg->sis64)
4560 len = snprintf(buf, PAGE_SIZE, "%s\n",
4561 __ipr_format_res_path(res->res_path, buffer,
4562 sizeof(buffer)));
4563 else if (res)
4564 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4565 res->bus, res->target, res->lun);
4566
4567 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4568 return len;
4569 }
4570
4571 static struct device_attribute ipr_resource_path_attr = {
4572 .attr = {
4573 .name = "resource_path",
4574 .mode = S_IRUGO,
4575 },
4576 .show = ipr_show_resource_path
4577 };
4578
4579 /**
4580 * ipr_show_device_id - Show the device_id for this device.
4581 * @dev: device struct
4582 * @attr: device attribute structure
4583 * @buf: buffer
4584 *
4585 * Return value:
4586 * number of bytes printed to buffer
4587 **/
ipr_show_device_id(struct device * dev,struct device_attribute * attr,char * buf)4588 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4589 {
4590 struct scsi_device *sdev = to_scsi_device(dev);
4591 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4592 struct ipr_resource_entry *res;
4593 unsigned long lock_flags = 0;
4594 ssize_t len = -ENXIO;
4595
4596 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4597 res = (struct ipr_resource_entry *)sdev->hostdata;
4598 if (res && ioa_cfg->sis64)
4599 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", be64_to_cpu(res->dev_id));
4600 else if (res)
4601 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4602
4603 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4604 return len;
4605 }
4606
4607 static struct device_attribute ipr_device_id_attr = {
4608 .attr = {
4609 .name = "device_id",
4610 .mode = S_IRUGO,
4611 },
4612 .show = ipr_show_device_id
4613 };
4614
4615 /**
4616 * ipr_show_resource_type - Show the resource type for this device.
4617 * @dev: device struct
4618 * @attr: device attribute structure
4619 * @buf: buffer
4620 *
4621 * Return value:
4622 * number of bytes printed to buffer
4623 **/
ipr_show_resource_type(struct device * dev,struct device_attribute * attr,char * buf)4624 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4625 {
4626 struct scsi_device *sdev = to_scsi_device(dev);
4627 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4628 struct ipr_resource_entry *res;
4629 unsigned long lock_flags = 0;
4630 ssize_t len = -ENXIO;
4631
4632 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4633 res = (struct ipr_resource_entry *)sdev->hostdata;
4634
4635 if (res)
4636 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4637
4638 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4639 return len;
4640 }
4641
4642 static struct device_attribute ipr_resource_type_attr = {
4643 .attr = {
4644 .name = "resource_type",
4645 .mode = S_IRUGO,
4646 },
4647 .show = ipr_show_resource_type
4648 };
4649
4650 /**
4651 * ipr_show_raw_mode - Show the adapter's raw mode
4652 * @dev: class device struct
4653 * @buf: buffer
4654 *
4655 * Return value:
4656 * number of bytes printed to buffer
4657 **/
ipr_show_raw_mode(struct device * dev,struct device_attribute * attr,char * buf)4658 static ssize_t ipr_show_raw_mode(struct device *dev,
4659 struct device_attribute *attr, char *buf)
4660 {
4661 struct scsi_device *sdev = to_scsi_device(dev);
4662 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4663 struct ipr_resource_entry *res;
4664 unsigned long lock_flags = 0;
4665 ssize_t len;
4666
4667 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4668 res = (struct ipr_resource_entry *)sdev->hostdata;
4669 if (res)
4670 len = snprintf(buf, PAGE_SIZE, "%d\n", res->raw_mode);
4671 else
4672 len = -ENXIO;
4673 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4674 return len;
4675 }
4676
4677 /**
4678 * ipr_store_raw_mode - Change the adapter's raw mode
4679 * @dev: class device struct
4680 * @buf: buffer
4681 *
4682 * Return value:
4683 * number of bytes printed to buffer
4684 **/
ipr_store_raw_mode(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)4685 static ssize_t ipr_store_raw_mode(struct device *dev,
4686 struct device_attribute *attr,
4687 const char *buf, size_t count)
4688 {
4689 struct scsi_device *sdev = to_scsi_device(dev);
4690 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4691 struct ipr_resource_entry *res;
4692 unsigned long lock_flags = 0;
4693 ssize_t len;
4694
4695 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4696 res = (struct ipr_resource_entry *)sdev->hostdata;
4697 if (res) {
4698 if (ipr_is_af_dasd_device(res)) {
4699 res->raw_mode = simple_strtoul(buf, NULL, 10);
4700 len = strlen(buf);
4701 if (res->sdev)
4702 sdev_printk(KERN_INFO, res->sdev, "raw mode is %s\n",
4703 res->raw_mode ? "enabled" : "disabled");
4704 } else
4705 len = -EINVAL;
4706 } else
4707 len = -ENXIO;
4708 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4709 return len;
4710 }
4711
4712 static struct device_attribute ipr_raw_mode_attr = {
4713 .attr = {
4714 .name = "raw_mode",
4715 .mode = S_IRUGO | S_IWUSR,
4716 },
4717 .show = ipr_show_raw_mode,
4718 .store = ipr_store_raw_mode
4719 };
4720
4721 static struct device_attribute *ipr_dev_attrs[] = {
4722 &ipr_adapter_handle_attr,
4723 &ipr_resource_path_attr,
4724 &ipr_device_id_attr,
4725 &ipr_resource_type_attr,
4726 &ipr_raw_mode_attr,
4727 NULL,
4728 };
4729
4730 /**
4731 * ipr_biosparam - Return the HSC mapping
4732 * @sdev: scsi device struct
4733 * @block_device: block device pointer
4734 * @capacity: capacity of the device
4735 * @parm: Array containing returned HSC values.
4736 *
4737 * This function generates the HSC parms that fdisk uses.
4738 * We want to make sure we return something that places partitions
4739 * on 4k boundaries for best performance with the IOA.
4740 *
4741 * Return value:
4742 * 0 on success
4743 **/
ipr_biosparam(struct scsi_device * sdev,struct block_device * block_device,sector_t capacity,int * parm)4744 static int ipr_biosparam(struct scsi_device *sdev,
4745 struct block_device *block_device,
4746 sector_t capacity, int *parm)
4747 {
4748 int heads, sectors;
4749 sector_t cylinders;
4750
4751 heads = 128;
4752 sectors = 32;
4753
4754 cylinders = capacity;
4755 sector_div(cylinders, (128 * 32));
4756
4757 /* return result */
4758 parm[0] = heads;
4759 parm[1] = sectors;
4760 parm[2] = cylinders;
4761
4762 return 0;
4763 }
4764
4765 /**
4766 * ipr_find_starget - Find target based on bus/target.
4767 * @starget: scsi target struct
4768 *
4769 * Return value:
4770 * resource entry pointer if found / NULL if not found
4771 **/
ipr_find_starget(struct scsi_target * starget)4772 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4773 {
4774 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4775 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4776 struct ipr_resource_entry *res;
4777
4778 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4779 if ((res->bus == starget->channel) &&
4780 (res->target == starget->id)) {
4781 return res;
4782 }
4783 }
4784
4785 return NULL;
4786 }
4787
4788 static struct ata_port_info sata_port_info;
4789
4790 /**
4791 * ipr_target_alloc - Prepare for commands to a SCSI target
4792 * @starget: scsi target struct
4793 *
4794 * If the device is a SATA device, this function allocates an
4795 * ATA port with libata, else it does nothing.
4796 *
4797 * Return value:
4798 * 0 on success / non-0 on failure
4799 **/
ipr_target_alloc(struct scsi_target * starget)4800 static int ipr_target_alloc(struct scsi_target *starget)
4801 {
4802 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4803 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4804 struct ipr_sata_port *sata_port;
4805 struct ata_port *ap;
4806 struct ipr_resource_entry *res;
4807 unsigned long lock_flags;
4808
4809 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4810 res = ipr_find_starget(starget);
4811 starget->hostdata = NULL;
4812
4813 if (res && ipr_is_gata(res)) {
4814 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4815 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4816 if (!sata_port)
4817 return -ENOMEM;
4818
4819 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4820 if (ap) {
4821 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4822 sata_port->ioa_cfg = ioa_cfg;
4823 sata_port->ap = ap;
4824 sata_port->res = res;
4825
4826 res->sata_port = sata_port;
4827 ap->private_data = sata_port;
4828 starget->hostdata = sata_port;
4829 } else {
4830 kfree(sata_port);
4831 return -ENOMEM;
4832 }
4833 }
4834 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4835
4836 return 0;
4837 }
4838
4839 /**
4840 * ipr_target_destroy - Destroy a SCSI target
4841 * @starget: scsi target struct
4842 *
4843 * If the device was a SATA device, this function frees the libata
4844 * ATA port, else it does nothing.
4845 *
4846 **/
ipr_target_destroy(struct scsi_target * starget)4847 static void ipr_target_destroy(struct scsi_target *starget)
4848 {
4849 struct ipr_sata_port *sata_port = starget->hostdata;
4850 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4851 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4852
4853 if (ioa_cfg->sis64) {
4854 if (!ipr_find_starget(starget)) {
4855 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4856 clear_bit(starget->id, ioa_cfg->array_ids);
4857 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4858 clear_bit(starget->id, ioa_cfg->vset_ids);
4859 else if (starget->channel == 0)
4860 clear_bit(starget->id, ioa_cfg->target_ids);
4861 }
4862 }
4863
4864 if (sata_port) {
4865 starget->hostdata = NULL;
4866 ata_sas_port_destroy(sata_port->ap);
4867 kfree(sata_port);
4868 }
4869 }
4870
4871 /**
4872 * ipr_find_sdev - Find device based on bus/target/lun.
4873 * @sdev: scsi device struct
4874 *
4875 * Return value:
4876 * resource entry pointer if found / NULL if not found
4877 **/
ipr_find_sdev(struct scsi_device * sdev)4878 static struct ipr_resource_entry *ipr_find_sdev(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
4883 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4884 if ((res->bus == sdev->channel) &&
4885 (res->target == sdev->id) &&
4886 (res->lun == sdev->lun))
4887 return res;
4888 }
4889
4890 return NULL;
4891 }
4892
4893 /**
4894 * ipr_slave_destroy - Unconfigure a SCSI device
4895 * @sdev: scsi device struct
4896 *
4897 * Return value:
4898 * nothing
4899 **/
ipr_slave_destroy(struct scsi_device * sdev)4900 static void ipr_slave_destroy(struct scsi_device *sdev)
4901 {
4902 struct ipr_resource_entry *res;
4903 struct ipr_ioa_cfg *ioa_cfg;
4904 unsigned long lock_flags = 0;
4905
4906 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4907
4908 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4909 res = (struct ipr_resource_entry *) sdev->hostdata;
4910 if (res) {
4911 if (res->sata_port)
4912 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4913 sdev->hostdata = NULL;
4914 res->sdev = NULL;
4915 res->sata_port = NULL;
4916 }
4917 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4918 }
4919
4920 /**
4921 * ipr_slave_configure - Configure a SCSI device
4922 * @sdev: scsi device struct
4923 *
4924 * This function configures the specified scsi device.
4925 *
4926 * Return value:
4927 * 0 on success
4928 **/
ipr_slave_configure(struct scsi_device * sdev)4929 static int ipr_slave_configure(struct scsi_device *sdev)
4930 {
4931 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4932 struct ipr_resource_entry *res;
4933 struct ata_port *ap = NULL;
4934 unsigned long lock_flags = 0;
4935 char buffer[IPR_MAX_RES_PATH_LENGTH];
4936
4937 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4938 res = sdev->hostdata;
4939 if (res) {
4940 if (ipr_is_af_dasd_device(res))
4941 sdev->type = TYPE_RAID;
4942 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4943 sdev->scsi_level = 4;
4944 sdev->no_uld_attach = 1;
4945 }
4946 if (ipr_is_vset_device(res)) {
4947 sdev->scsi_level = SCSI_SPC_3;
4948 sdev->no_report_opcodes = 1;
4949 blk_queue_rq_timeout(sdev->request_queue,
4950 IPR_VSET_RW_TIMEOUT);
4951 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4952 }
4953 if (ipr_is_gata(res) && res->sata_port)
4954 ap = res->sata_port->ap;
4955 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4956
4957 if (ap) {
4958 scsi_change_queue_depth(sdev, IPR_MAX_CMD_PER_ATA_LUN);
4959 ata_sas_slave_configure(sdev, ap);
4960 }
4961
4962 if (ioa_cfg->sis64)
4963 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4964 ipr_format_res_path(ioa_cfg,
4965 res->res_path, buffer, sizeof(buffer)));
4966 return 0;
4967 }
4968 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4969 return 0;
4970 }
4971
4972 /**
4973 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4974 * @sdev: scsi device struct
4975 *
4976 * This function initializes an ATA port so that future commands
4977 * sent through queuecommand will work.
4978 *
4979 * Return value:
4980 * 0 on success
4981 **/
ipr_ata_slave_alloc(struct scsi_device * sdev)4982 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4983 {
4984 struct ipr_sata_port *sata_port = NULL;
4985 int rc = -ENXIO;
4986
4987 ENTER;
4988 if (sdev->sdev_target)
4989 sata_port = sdev->sdev_target->hostdata;
4990 if (sata_port) {
4991 rc = ata_sas_port_init(sata_port->ap);
4992 if (rc == 0)
4993 rc = ata_sas_sync_probe(sata_port->ap);
4994 }
4995
4996 if (rc)
4997 ipr_slave_destroy(sdev);
4998
4999 LEAVE;
5000 return rc;
5001 }
5002
5003 /**
5004 * ipr_slave_alloc - Prepare for commands to a device.
5005 * @sdev: scsi device struct
5006 *
5007 * This function saves a pointer to the resource entry
5008 * in the scsi device struct if the device exists. We
5009 * can then use this pointer in ipr_queuecommand when
5010 * handling new commands.
5011 *
5012 * Return value:
5013 * 0 on success / -ENXIO if device does not exist
5014 **/
ipr_slave_alloc(struct scsi_device * sdev)5015 static int ipr_slave_alloc(struct scsi_device *sdev)
5016 {
5017 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
5018 struct ipr_resource_entry *res;
5019 unsigned long lock_flags;
5020 int rc = -ENXIO;
5021
5022 sdev->hostdata = NULL;
5023
5024 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5025
5026 res = ipr_find_sdev(sdev);
5027 if (res) {
5028 res->sdev = sdev;
5029 res->add_to_ml = 0;
5030 res->in_erp = 0;
5031 sdev->hostdata = res;
5032 if (!ipr_is_naca_model(res))
5033 res->needs_sync_complete = 1;
5034 rc = 0;
5035 if (ipr_is_gata(res)) {
5036 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5037 return ipr_ata_slave_alloc(sdev);
5038 }
5039 }
5040
5041 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5042
5043 return rc;
5044 }
5045
5046 /**
5047 * ipr_match_lun - Match function for specified LUN
5048 * @ipr_cmd: ipr command struct
5049 * @device: device to match (sdev)
5050 *
5051 * Returns:
5052 * 1 if command matches sdev / 0 if command does not match sdev
5053 **/
ipr_match_lun(struct ipr_cmnd * ipr_cmd,void * device)5054 static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device)
5055 {
5056 if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device)
5057 return 1;
5058 return 0;
5059 }
5060
5061 /**
5062 * ipr_cmnd_is_free - Check if a command is free or not
5063 * @ipr_cmd ipr command struct
5064 *
5065 * Returns:
5066 * true / false
5067 **/
ipr_cmnd_is_free(struct ipr_cmnd * ipr_cmd)5068 static bool ipr_cmnd_is_free(struct ipr_cmnd *ipr_cmd)
5069 {
5070 struct ipr_cmnd *loop_cmd;
5071
5072 list_for_each_entry(loop_cmd, &ipr_cmd->hrrq->hrrq_free_q, queue) {
5073 if (loop_cmd == ipr_cmd)
5074 return true;
5075 }
5076
5077 return false;
5078 }
5079
5080 /**
5081 * ipr_match_res - Match function for specified resource entry
5082 * @ipr_cmd: ipr command struct
5083 * @resource: resource entry to match
5084 *
5085 * Returns:
5086 * 1 if command matches sdev / 0 if command does not match sdev
5087 **/
ipr_match_res(struct ipr_cmnd * ipr_cmd,void * resource)5088 static int ipr_match_res(struct ipr_cmnd *ipr_cmd, void *resource)
5089 {
5090 struct ipr_resource_entry *res = resource;
5091
5092 if (res && ipr_cmd->ioarcb.res_handle == res->res_handle)
5093 return 1;
5094 return 0;
5095 }
5096
5097 /**
5098 * ipr_wait_for_ops - Wait for matching commands to complete
5099 * @ipr_cmd: ipr command struct
5100 * @device: device to match (sdev)
5101 * @match: match function to use
5102 *
5103 * Returns:
5104 * SUCCESS / FAILED
5105 **/
ipr_wait_for_ops(struct ipr_ioa_cfg * ioa_cfg,void * device,int (* match)(struct ipr_cmnd *,void *))5106 static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device,
5107 int (*match)(struct ipr_cmnd *, void *))
5108 {
5109 struct ipr_cmnd *ipr_cmd;
5110 int wait, i;
5111 unsigned long flags;
5112 struct ipr_hrr_queue *hrrq;
5113 signed long timeout = IPR_ABORT_TASK_TIMEOUT;
5114 DECLARE_COMPLETION_ONSTACK(comp);
5115
5116 ENTER;
5117 do {
5118 wait = 0;
5119
5120 for_each_hrrq(hrrq, ioa_cfg) {
5121 spin_lock_irqsave(hrrq->lock, flags);
5122 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5123 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5124 if (!ipr_cmnd_is_free(ipr_cmd)) {
5125 if (match(ipr_cmd, device)) {
5126 ipr_cmd->eh_comp = ∁
5127 wait++;
5128 }
5129 }
5130 }
5131 spin_unlock_irqrestore(hrrq->lock, flags);
5132 }
5133
5134 if (wait) {
5135 timeout = wait_for_completion_timeout(&comp, timeout);
5136
5137 if (!timeout) {
5138 wait = 0;
5139
5140 for_each_hrrq(hrrq, ioa_cfg) {
5141 spin_lock_irqsave(hrrq->lock, flags);
5142 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5143 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5144 if (!ipr_cmnd_is_free(ipr_cmd)) {
5145 if (match(ipr_cmd, device)) {
5146 ipr_cmd->eh_comp = NULL;
5147 wait++;
5148 }
5149 }
5150 }
5151 spin_unlock_irqrestore(hrrq->lock, flags);
5152 }
5153
5154 if (wait)
5155 dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n");
5156 LEAVE;
5157 return wait ? FAILED : SUCCESS;
5158 }
5159 }
5160 } while (wait);
5161
5162 LEAVE;
5163 return SUCCESS;
5164 }
5165
ipr_eh_host_reset(struct scsi_cmnd * cmd)5166 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
5167 {
5168 struct ipr_ioa_cfg *ioa_cfg;
5169 unsigned long lock_flags = 0;
5170 int rc = SUCCESS;
5171
5172 ENTER;
5173 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5174 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5175
5176 if (!ioa_cfg->in_reset_reload && !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5177 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5178 dev_err(&ioa_cfg->pdev->dev,
5179 "Adapter being reset as a result of error recovery.\n");
5180
5181 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5182 ioa_cfg->sdt_state = GET_DUMP;
5183 }
5184
5185 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5186 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5187 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5188
5189 /* If we got hit with a host reset while we were already resetting
5190 the adapter for some reason, and the reset failed. */
5191 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
5192 ipr_trace;
5193 rc = FAILED;
5194 }
5195
5196 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5197 LEAVE;
5198 return rc;
5199 }
5200
5201 /**
5202 * ipr_device_reset - Reset the device
5203 * @ioa_cfg: ioa config struct
5204 * @res: resource entry struct
5205 *
5206 * This function issues a device reset to the affected device.
5207 * If the device is a SCSI device, a LUN reset will be sent
5208 * to the device first. If that does not work, a target reset
5209 * will be sent. If the device is a SATA device, a PHY reset will
5210 * be sent.
5211 *
5212 * Return value:
5213 * 0 on success / non-zero on failure
5214 **/
ipr_device_reset(struct ipr_ioa_cfg * ioa_cfg,struct ipr_resource_entry * res)5215 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
5216 struct ipr_resource_entry *res)
5217 {
5218 struct ipr_cmnd *ipr_cmd;
5219 struct ipr_ioarcb *ioarcb;
5220 struct ipr_cmd_pkt *cmd_pkt;
5221 struct ipr_ioarcb_ata_regs *regs;
5222 u32 ioasc;
5223
5224 ENTER;
5225 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5226 ioarcb = &ipr_cmd->ioarcb;
5227 cmd_pkt = &ioarcb->cmd_pkt;
5228
5229 if (ipr_cmd->ioa_cfg->sis64) {
5230 regs = &ipr_cmd->i.ata_ioadl.regs;
5231 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
5232 } else
5233 regs = &ioarcb->u.add_data.u.regs;
5234
5235 ioarcb->res_handle = res->res_handle;
5236 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5237 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5238 if (ipr_is_gata(res)) {
5239 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
5240 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
5241 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
5242 }
5243
5244 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5245 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5246 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5247 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
5248 if (ipr_cmd->ioa_cfg->sis64)
5249 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
5250 sizeof(struct ipr_ioasa_gata));
5251 else
5252 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
5253 sizeof(struct ipr_ioasa_gata));
5254 }
5255
5256 LEAVE;
5257 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
5258 }
5259
5260 /**
5261 * ipr_sata_reset - Reset the SATA port
5262 * @link: SATA link to reset
5263 * @classes: class of the attached device
5264 *
5265 * This function issues a SATA phy reset to the affected ATA link.
5266 *
5267 * Return value:
5268 * 0 on success / non-zero on failure
5269 **/
ipr_sata_reset(struct ata_link * link,unsigned int * classes,unsigned long deadline)5270 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
5271 unsigned long deadline)
5272 {
5273 struct ipr_sata_port *sata_port = link->ap->private_data;
5274 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
5275 struct ipr_resource_entry *res;
5276 unsigned long lock_flags = 0;
5277 int rc = -ENXIO, ret;
5278
5279 ENTER;
5280 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5281 while (ioa_cfg->in_reset_reload) {
5282 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5283 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5284 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5285 }
5286
5287 res = sata_port->res;
5288 if (res) {
5289 rc = ipr_device_reset(ioa_cfg, res);
5290 *classes = res->ata_class;
5291 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5292
5293 ret = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res);
5294 if (ret != SUCCESS) {
5295 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5296 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
5297 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5298
5299 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
5300 }
5301 } else
5302 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5303
5304 LEAVE;
5305 return rc;
5306 }
5307
5308 /**
5309 * ipr_eh_dev_reset - Reset the device
5310 * @scsi_cmd: scsi command struct
5311 *
5312 * This function issues a device reset to the affected device.
5313 * A LUN reset will be sent to the device first. If that does
5314 * not work, a target reset will be sent.
5315 *
5316 * Return value:
5317 * SUCCESS / FAILED
5318 **/
__ipr_eh_dev_reset(struct scsi_cmnd * scsi_cmd)5319 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
5320 {
5321 struct ipr_cmnd *ipr_cmd;
5322 struct ipr_ioa_cfg *ioa_cfg;
5323 struct ipr_resource_entry *res;
5324 struct ata_port *ap;
5325 int rc = 0, i;
5326 struct ipr_hrr_queue *hrrq;
5327
5328 ENTER;
5329 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5330 res = scsi_cmd->device->hostdata;
5331
5332 /*
5333 * If we are currently going through reset/reload, return failed. This will force the
5334 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
5335 * reset to complete
5336 */
5337 if (ioa_cfg->in_reset_reload)
5338 return FAILED;
5339 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5340 return FAILED;
5341
5342 for_each_hrrq(hrrq, ioa_cfg) {
5343 spin_lock(&hrrq->_lock);
5344 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5345 ipr_cmd = ioa_cfg->ipr_cmnd_list[i];
5346
5347 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
5348 if (!ipr_cmd->qc)
5349 continue;
5350 if (ipr_cmnd_is_free(ipr_cmd))
5351 continue;
5352
5353 ipr_cmd->done = ipr_sata_eh_done;
5354 if (!(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
5355 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
5356 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
5357 }
5358 }
5359 }
5360 spin_unlock(&hrrq->_lock);
5361 }
5362 res->resetting_device = 1;
5363 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
5364
5365 if (ipr_is_gata(res) && res->sata_port) {
5366 ap = res->sata_port->ap;
5367 spin_unlock_irq(scsi_cmd->device->host->host_lock);
5368 ata_std_error_handler(ap);
5369 spin_lock_irq(scsi_cmd->device->host->host_lock);
5370 } else
5371 rc = ipr_device_reset(ioa_cfg, res);
5372 res->resetting_device = 0;
5373 res->reset_occurred = 1;
5374
5375 LEAVE;
5376 return rc ? FAILED : SUCCESS;
5377 }
5378
ipr_eh_dev_reset(struct scsi_cmnd * cmd)5379 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
5380 {
5381 int rc;
5382 struct ipr_ioa_cfg *ioa_cfg;
5383 struct ipr_resource_entry *res;
5384
5385 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
5386 res = cmd->device->hostdata;
5387
5388 if (!res)
5389 return FAILED;
5390
5391 spin_lock_irq(cmd->device->host->host_lock);
5392 rc = __ipr_eh_dev_reset(cmd);
5393 spin_unlock_irq(cmd->device->host->host_lock);
5394
5395 if (rc == SUCCESS) {
5396 if (ipr_is_gata(res) && res->sata_port)
5397 rc = ipr_wait_for_ops(ioa_cfg, res, ipr_match_res);
5398 else
5399 rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun);
5400 }
5401
5402 return rc;
5403 }
5404
5405 /**
5406 * ipr_bus_reset_done - Op done function for bus reset.
5407 * @ipr_cmd: ipr command struct
5408 *
5409 * This function is the op done function for a bus reset
5410 *
5411 * Return value:
5412 * none
5413 **/
ipr_bus_reset_done(struct ipr_cmnd * ipr_cmd)5414 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5415 {
5416 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5417 struct ipr_resource_entry *res;
5418
5419 ENTER;
5420 if (!ioa_cfg->sis64)
5421 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5422 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5423 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5424 break;
5425 }
5426 }
5427
5428 /*
5429 * If abort has not completed, indicate the reset has, else call the
5430 * abort's done function to wake the sleeping eh thread
5431 */
5432 if (ipr_cmd->sibling->sibling)
5433 ipr_cmd->sibling->sibling = NULL;
5434 else
5435 ipr_cmd->sibling->done(ipr_cmd->sibling);
5436
5437 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5438 LEAVE;
5439 }
5440
5441 /**
5442 * ipr_abort_timeout - An abort task has timed out
5443 * @ipr_cmd: ipr command struct
5444 *
5445 * This function handles when an abort task times out. If this
5446 * happens we issue a bus reset since we have resources tied
5447 * up that must be freed before returning to the midlayer.
5448 *
5449 * Return value:
5450 * none
5451 **/
ipr_abort_timeout(struct timer_list * t)5452 static void ipr_abort_timeout(struct timer_list *t)
5453 {
5454 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
5455 struct ipr_cmnd *reset_cmd;
5456 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5457 struct ipr_cmd_pkt *cmd_pkt;
5458 unsigned long lock_flags = 0;
5459
5460 ENTER;
5461 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5462 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5463 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5464 return;
5465 }
5466
5467 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5468 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5469 ipr_cmd->sibling = reset_cmd;
5470 reset_cmd->sibling = ipr_cmd;
5471 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5472 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5473 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5474 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5475 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5476
5477 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5479 LEAVE;
5480 }
5481
5482 /**
5483 * ipr_cancel_op - Cancel specified op
5484 * @scsi_cmd: scsi command struct
5485 *
5486 * This function cancels specified op.
5487 *
5488 * Return value:
5489 * SUCCESS / FAILED
5490 **/
ipr_cancel_op(struct scsi_cmnd * scsi_cmd)5491 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5492 {
5493 struct ipr_cmnd *ipr_cmd;
5494 struct ipr_ioa_cfg *ioa_cfg;
5495 struct ipr_resource_entry *res;
5496 struct ipr_cmd_pkt *cmd_pkt;
5497 u32 ioasc, int_reg;
5498 int i, op_found = 0;
5499 struct ipr_hrr_queue *hrrq;
5500
5501 ENTER;
5502 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5503 res = scsi_cmd->device->hostdata;
5504
5505 /* If we are currently going through reset/reload, return failed.
5506 * This will force the mid-layer to call ipr_eh_host_reset,
5507 * which will then go to sleep and wait for the reset to complete
5508 */
5509 if (ioa_cfg->in_reset_reload ||
5510 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5511 return FAILED;
5512 if (!res)
5513 return FAILED;
5514
5515 /*
5516 * If we are aborting a timed out op, chances are that the timeout was caused
5517 * by a still not detected EEH error. In such cases, reading a register will
5518 * trigger the EEH recovery infrastructure.
5519 */
5520 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5521
5522 if (!ipr_is_gscsi(res))
5523 return FAILED;
5524
5525 for_each_hrrq(hrrq, ioa_cfg) {
5526 spin_lock(&hrrq->_lock);
5527 for (i = hrrq->min_cmd_id; i <= hrrq->max_cmd_id; i++) {
5528 if (ioa_cfg->ipr_cmnd_list[i]->scsi_cmd == scsi_cmd) {
5529 if (!ipr_cmnd_is_free(ioa_cfg->ipr_cmnd_list[i])) {
5530 op_found = 1;
5531 break;
5532 }
5533 }
5534 }
5535 spin_unlock(&hrrq->_lock);
5536 }
5537
5538 if (!op_found)
5539 return SUCCESS;
5540
5541 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5542 ipr_cmd->ioarcb.res_handle = res->res_handle;
5543 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5544 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5545 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5546 ipr_cmd->u.sdev = scsi_cmd->device;
5547
5548 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5549 scsi_cmd->cmnd[0]);
5550 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5551 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5552
5553 /*
5554 * If the abort task timed out and we sent a bus reset, we will get
5555 * one the following responses to the abort
5556 */
5557 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5558 ioasc = 0;
5559 ipr_trace;
5560 }
5561
5562 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5563 if (!ipr_is_naca_model(res))
5564 res->needs_sync_complete = 1;
5565
5566 LEAVE;
5567 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5568 }
5569
5570 /**
5571 * ipr_eh_abort - Abort a single op
5572 * @scsi_cmd: scsi command struct
5573 *
5574 * Return value:
5575 * 0 if scan in progress / 1 if scan is complete
5576 **/
ipr_scan_finished(struct Scsi_Host * shost,unsigned long elapsed_time)5577 static int ipr_scan_finished(struct Scsi_Host *shost, unsigned long elapsed_time)
5578 {
5579 unsigned long lock_flags;
5580 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
5581 int rc = 0;
5582
5583 spin_lock_irqsave(shost->host_lock, lock_flags);
5584 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead || ioa_cfg->scan_done)
5585 rc = 1;
5586 if ((elapsed_time/HZ) > (ioa_cfg->transop_timeout * 2))
5587 rc = 1;
5588 spin_unlock_irqrestore(shost->host_lock, lock_flags);
5589 return rc;
5590 }
5591
5592 /**
5593 * ipr_eh_host_reset - Reset the host adapter
5594 * @scsi_cmd: scsi command struct
5595 *
5596 * Return value:
5597 * SUCCESS / FAILED
5598 **/
ipr_eh_abort(struct scsi_cmnd * scsi_cmd)5599 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5600 {
5601 unsigned long flags;
5602 int rc;
5603 struct ipr_ioa_cfg *ioa_cfg;
5604
5605 ENTER;
5606
5607 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
5608
5609 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5610 rc = ipr_cancel_op(scsi_cmd);
5611 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5612
5613 if (rc == SUCCESS)
5614 rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun);
5615 LEAVE;
5616 return rc;
5617 }
5618
5619 /**
5620 * ipr_handle_other_interrupt - Handle "other" interrupts
5621 * @ioa_cfg: ioa config struct
5622 * @int_reg: interrupt register
5623 *
5624 * Return value:
5625 * IRQ_NONE / IRQ_HANDLED
5626 **/
ipr_handle_other_interrupt(struct ipr_ioa_cfg * ioa_cfg,u32 int_reg)5627 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5628 u32 int_reg)
5629 {
5630 irqreturn_t rc = IRQ_HANDLED;
5631 u32 int_mask_reg;
5632
5633 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5634 int_reg &= ~int_mask_reg;
5635
5636 /* If an interrupt on the adapter did not occur, ignore it.
5637 * Or in the case of SIS 64, check for a stage change interrupt.
5638 */
5639 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5640 if (ioa_cfg->sis64) {
5641 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5642 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5643 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5644
5645 /* clear stage change */
5646 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5647 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5648 list_del(&ioa_cfg->reset_cmd->queue);
5649 del_timer(&ioa_cfg->reset_cmd->timer);
5650 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5651 return IRQ_HANDLED;
5652 }
5653 }
5654
5655 return IRQ_NONE;
5656 }
5657
5658 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5659 /* Mask the interrupt */
5660 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5661 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5662
5663 list_del(&ioa_cfg->reset_cmd->queue);
5664 del_timer(&ioa_cfg->reset_cmd->timer);
5665 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5666 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5667 if (ioa_cfg->clear_isr) {
5668 if (ipr_debug && printk_ratelimit())
5669 dev_err(&ioa_cfg->pdev->dev,
5670 "Spurious interrupt detected. 0x%08X\n", int_reg);
5671 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5672 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5673 return IRQ_NONE;
5674 }
5675 } else {
5676 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5677 ioa_cfg->ioa_unit_checked = 1;
5678 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5679 dev_err(&ioa_cfg->pdev->dev,
5680 "No Host RRQ. 0x%08X\n", int_reg);
5681 else
5682 dev_err(&ioa_cfg->pdev->dev,
5683 "Permanent IOA failure. 0x%08X\n", int_reg);
5684
5685 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5686 ioa_cfg->sdt_state = GET_DUMP;
5687
5688 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5689 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5690 }
5691
5692 return rc;
5693 }
5694
5695 /**
5696 * ipr_isr_eh - Interrupt service routine error handler
5697 * @ioa_cfg: ioa config struct
5698 * @msg: message to log
5699 *
5700 * Return value:
5701 * none
5702 **/
ipr_isr_eh(struct ipr_ioa_cfg * ioa_cfg,char * msg,u16 number)5703 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5704 {
5705 ioa_cfg->errors_logged++;
5706 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5707
5708 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5709 ioa_cfg->sdt_state = GET_DUMP;
5710
5711 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5712 }
5713
ipr_process_hrrq(struct ipr_hrr_queue * hrr_queue,int budget,struct list_head * doneq)5714 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5715 struct list_head *doneq)
5716 {
5717 u32 ioasc;
5718 u16 cmd_index;
5719 struct ipr_cmnd *ipr_cmd;
5720 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5721 int num_hrrq = 0;
5722
5723 /* If interrupts are disabled, ignore the interrupt */
5724 if (!hrr_queue->allow_interrupts)
5725 return 0;
5726
5727 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5728 hrr_queue->toggle_bit) {
5729
5730 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5731 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5732 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5733
5734 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5735 cmd_index < hrr_queue->min_cmd_id)) {
5736 ipr_isr_eh(ioa_cfg,
5737 "Invalid response handle from IOA: ",
5738 cmd_index);
5739 break;
5740 }
5741
5742 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5743 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5744
5745 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5746
5747 list_move_tail(&ipr_cmd->queue, doneq);
5748
5749 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5750 hrr_queue->hrrq_curr++;
5751 } else {
5752 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5753 hrr_queue->toggle_bit ^= 1u;
5754 }
5755 num_hrrq++;
5756 if (budget > 0 && num_hrrq >= budget)
5757 break;
5758 }
5759
5760 return num_hrrq;
5761 }
5762
ipr_iopoll(struct irq_poll * iop,int budget)5763 static int ipr_iopoll(struct irq_poll *iop, int budget)
5764 {
5765 struct ipr_ioa_cfg *ioa_cfg;
5766 struct ipr_hrr_queue *hrrq;
5767 struct ipr_cmnd *ipr_cmd, *temp;
5768 unsigned long hrrq_flags;
5769 int completed_ops;
5770 LIST_HEAD(doneq);
5771
5772 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5773 ioa_cfg = hrrq->ioa_cfg;
5774
5775 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5776 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5777
5778 if (completed_ops < budget)
5779 irq_poll_complete(iop);
5780 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5781
5782 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5783 list_del(&ipr_cmd->queue);
5784 del_timer(&ipr_cmd->timer);
5785 ipr_cmd->fast_done(ipr_cmd);
5786 }
5787
5788 return completed_ops;
5789 }
5790
5791 /**
5792 * ipr_isr - Interrupt service routine
5793 * @irq: irq number
5794 * @devp: pointer to ioa config struct
5795 *
5796 * Return value:
5797 * IRQ_NONE / IRQ_HANDLED
5798 **/
ipr_isr(int irq,void * devp)5799 static irqreturn_t ipr_isr(int irq, void *devp)
5800 {
5801 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5802 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5803 unsigned long hrrq_flags = 0;
5804 u32 int_reg = 0;
5805 int num_hrrq = 0;
5806 int irq_none = 0;
5807 struct ipr_cmnd *ipr_cmd, *temp;
5808 irqreturn_t rc = IRQ_NONE;
5809 LIST_HEAD(doneq);
5810
5811 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5812 /* If interrupts are disabled, ignore the interrupt */
5813 if (!hrrq->allow_interrupts) {
5814 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5815 return IRQ_NONE;
5816 }
5817
5818 while (1) {
5819 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5820 rc = IRQ_HANDLED;
5821
5822 if (!ioa_cfg->clear_isr)
5823 break;
5824
5825 /* Clear the PCI interrupt */
5826 num_hrrq = 0;
5827 do {
5828 writel(IPR_PCII_HRRQ_UPDATED,
5829 ioa_cfg->regs.clr_interrupt_reg32);
5830 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5831 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5832 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5833
5834 } else if (rc == IRQ_NONE && irq_none == 0) {
5835 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5836 irq_none++;
5837 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5838 int_reg & IPR_PCII_HRRQ_UPDATED) {
5839 ipr_isr_eh(ioa_cfg,
5840 "Error clearing HRRQ: ", num_hrrq);
5841 rc = IRQ_HANDLED;
5842 break;
5843 } else
5844 break;
5845 }
5846
5847 if (unlikely(rc == IRQ_NONE))
5848 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5849
5850 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5851 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5852 list_del(&ipr_cmd->queue);
5853 del_timer(&ipr_cmd->timer);
5854 ipr_cmd->fast_done(ipr_cmd);
5855 }
5856 return rc;
5857 }
5858
5859 /**
5860 * ipr_isr_mhrrq - Interrupt service routine
5861 * @irq: irq number
5862 * @devp: pointer to ioa config struct
5863 *
5864 * Return value:
5865 * IRQ_NONE / IRQ_HANDLED
5866 **/
ipr_isr_mhrrq(int irq,void * devp)5867 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5868 {
5869 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5870 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5871 unsigned long hrrq_flags = 0;
5872 struct ipr_cmnd *ipr_cmd, *temp;
5873 irqreturn_t rc = IRQ_NONE;
5874 LIST_HEAD(doneq);
5875
5876 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5877
5878 /* If interrupts are disabled, ignore the interrupt */
5879 if (!hrrq->allow_interrupts) {
5880 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5881 return IRQ_NONE;
5882 }
5883
5884 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5885 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5886 hrrq->toggle_bit) {
5887 irq_poll_sched(&hrrq->iopoll);
5888 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5889 return IRQ_HANDLED;
5890 }
5891 } else {
5892 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5893 hrrq->toggle_bit)
5894
5895 if (ipr_process_hrrq(hrrq, -1, &doneq))
5896 rc = IRQ_HANDLED;
5897 }
5898
5899 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5900
5901 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5902 list_del(&ipr_cmd->queue);
5903 del_timer(&ipr_cmd->timer);
5904 ipr_cmd->fast_done(ipr_cmd);
5905 }
5906 return rc;
5907 }
5908
5909 /**
5910 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5911 * @ioa_cfg: ioa config struct
5912 * @ipr_cmd: ipr command struct
5913 *
5914 * Return value:
5915 * 0 on success / -1 on failure
5916 **/
ipr_build_ioadl64(struct ipr_ioa_cfg * ioa_cfg,struct ipr_cmnd * ipr_cmd)5917 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5918 struct ipr_cmnd *ipr_cmd)
5919 {
5920 int i, nseg;
5921 struct scatterlist *sg;
5922 u32 length;
5923 u32 ioadl_flags = 0;
5924 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5925 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5926 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5927
5928 length = scsi_bufflen(scsi_cmd);
5929 if (!length)
5930 return 0;
5931
5932 nseg = scsi_dma_map(scsi_cmd);
5933 if (nseg < 0) {
5934 if (printk_ratelimit())
5935 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5936 return -1;
5937 }
5938
5939 ipr_cmd->dma_use_sg = nseg;
5940
5941 ioarcb->data_transfer_length = cpu_to_be32(length);
5942 ioarcb->ioadl_len =
5943 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5944
5945 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5946 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5947 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5948 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5949 ioadl_flags = IPR_IOADL_FLAGS_READ;
5950
5951 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5952 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5953 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5954 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5955 }
5956
5957 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5958 return 0;
5959 }
5960
5961 /**
5962 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5963 * @ioa_cfg: ioa config struct
5964 * @ipr_cmd: ipr command struct
5965 *
5966 * Return value:
5967 * 0 on success / -1 on failure
5968 **/
ipr_build_ioadl(struct ipr_ioa_cfg * ioa_cfg,struct ipr_cmnd * ipr_cmd)5969 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5970 struct ipr_cmnd *ipr_cmd)
5971 {
5972 int i, nseg;
5973 struct scatterlist *sg;
5974 u32 length;
5975 u32 ioadl_flags = 0;
5976 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5977 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5978 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5979
5980 length = scsi_bufflen(scsi_cmd);
5981 if (!length)
5982 return 0;
5983
5984 nseg = scsi_dma_map(scsi_cmd);
5985 if (nseg < 0) {
5986 dev_err(&ioa_cfg->pdev->dev, "scsi_dma_map failed!\n");
5987 return -1;
5988 }
5989
5990 ipr_cmd->dma_use_sg = nseg;
5991
5992 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5993 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5994 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5995 ioarcb->data_transfer_length = cpu_to_be32(length);
5996 ioarcb->ioadl_len =
5997 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5998 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5999 ioadl_flags = IPR_IOADL_FLAGS_READ;
6000 ioarcb->read_data_transfer_length = cpu_to_be32(length);
6001 ioarcb->read_ioadl_len =
6002 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6003 }
6004
6005 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
6006 ioadl = ioarcb->u.add_data.u.ioadl;
6007 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
6008 offsetof(struct ipr_ioarcb, u.add_data));
6009 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6010 }
6011
6012 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
6013 ioadl[i].flags_and_data_len =
6014 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6015 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
6016 }
6017
6018 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6019 return 0;
6020 }
6021
6022 /**
6023 * __ipr_erp_done - Process completion of ERP for a device
6024 * @ipr_cmd: ipr command struct
6025 *
6026 * This function copies the sense buffer into the scsi_cmd
6027 * struct and pushes the scsi_done function.
6028 *
6029 * Return value:
6030 * nothing
6031 **/
__ipr_erp_done(struct ipr_cmnd * ipr_cmd)6032 static void __ipr_erp_done(struct ipr_cmnd *ipr_cmd)
6033 {
6034 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6035 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6036 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6037
6038 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6039 scsi_cmd->result |= (DID_ERROR << 16);
6040 scmd_printk(KERN_ERR, scsi_cmd,
6041 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
6042 } else {
6043 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
6044 SCSI_SENSE_BUFFERSIZE);
6045 }
6046
6047 if (res) {
6048 if (!ipr_is_naca_model(res))
6049 res->needs_sync_complete = 1;
6050 res->in_erp = 0;
6051 }
6052 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6053 scsi_cmd->scsi_done(scsi_cmd);
6054 if (ipr_cmd->eh_comp)
6055 complete(ipr_cmd->eh_comp);
6056 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6057 }
6058
6059 /**
6060 * ipr_erp_done - Process completion of ERP for a device
6061 * @ipr_cmd: ipr command struct
6062 *
6063 * This function copies the sense buffer into the scsi_cmd
6064 * struct and pushes the scsi_done function.
6065 *
6066 * Return value:
6067 * nothing
6068 **/
ipr_erp_done(struct ipr_cmnd * ipr_cmd)6069 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
6070 {
6071 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
6072 unsigned long hrrq_flags;
6073
6074 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
6075 __ipr_erp_done(ipr_cmd);
6076 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
6077 }
6078
6079 /**
6080 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
6081 * @ipr_cmd: ipr command struct
6082 *
6083 * Return value:
6084 * none
6085 **/
ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd * ipr_cmd)6086 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
6087 {
6088 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6089 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6090 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6091
6092 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
6093 ioarcb->data_transfer_length = 0;
6094 ioarcb->read_data_transfer_length = 0;
6095 ioarcb->ioadl_len = 0;
6096 ioarcb->read_ioadl_len = 0;
6097 ioasa->hdr.ioasc = 0;
6098 ioasa->hdr.residual_data_len = 0;
6099
6100 if (ipr_cmd->ioa_cfg->sis64)
6101 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6102 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
6103 else {
6104 ioarcb->write_ioadl_addr =
6105 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
6106 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
6107 }
6108 }
6109
6110 /**
6111 * __ipr_erp_request_sense - Send request sense to a device
6112 * @ipr_cmd: ipr command struct
6113 *
6114 * This function sends a request sense to a device as a result
6115 * of a check condition.
6116 *
6117 * Return value:
6118 * nothing
6119 **/
__ipr_erp_request_sense(struct ipr_cmnd * ipr_cmd)6120 static void __ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
6121 {
6122 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6123 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6124
6125 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
6126 __ipr_erp_done(ipr_cmd);
6127 return;
6128 }
6129
6130 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6131
6132 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
6133 cmd_pkt->cdb[0] = REQUEST_SENSE;
6134 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
6135 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
6136 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6137 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
6138
6139 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
6140 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
6141
6142 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
6143 IPR_REQUEST_SENSE_TIMEOUT * 2);
6144 }
6145
6146 /**
6147 * ipr_erp_request_sense - Send request sense to a device
6148 * @ipr_cmd: ipr command struct
6149 *
6150 * This function sends a request sense to a device as a result
6151 * of a check condition.
6152 *
6153 * Return value:
6154 * nothing
6155 **/
ipr_erp_request_sense(struct ipr_cmnd * ipr_cmd)6156 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
6157 {
6158 struct ipr_hrr_queue *hrrq = ipr_cmd->hrrq;
6159 unsigned long hrrq_flags;
6160
6161 spin_lock_irqsave(&hrrq->_lock, hrrq_flags);
6162 __ipr_erp_request_sense(ipr_cmd);
6163 spin_unlock_irqrestore(&hrrq->_lock, hrrq_flags);
6164 }
6165
6166 /**
6167 * ipr_erp_cancel_all - Send cancel all to a device
6168 * @ipr_cmd: ipr command struct
6169 *
6170 * This function sends a cancel all to a device to clear the
6171 * queue. If we are running TCQ on the device, QERR is set to 1,
6172 * which means all outstanding ops have been dropped on the floor.
6173 * Cancel all will return them to us.
6174 *
6175 * Return value:
6176 * nothing
6177 **/
ipr_erp_cancel_all(struct ipr_cmnd * ipr_cmd)6178 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
6179 {
6180 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6181 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6182 struct ipr_cmd_pkt *cmd_pkt;
6183
6184 res->in_erp = 1;
6185
6186 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
6187
6188 if (!scsi_cmd->device->simple_tags) {
6189 __ipr_erp_request_sense(ipr_cmd);
6190 return;
6191 }
6192
6193 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
6194 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
6195 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
6196
6197 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
6198 IPR_CANCEL_ALL_TIMEOUT);
6199 }
6200
6201 /**
6202 * ipr_dump_ioasa - Dump contents of IOASA
6203 * @ioa_cfg: ioa config struct
6204 * @ipr_cmd: ipr command struct
6205 * @res: resource entry struct
6206 *
6207 * This function is invoked by the interrupt handler when ops
6208 * fail. It will log the IOASA if appropriate. Only called
6209 * for GPDD ops.
6210 *
6211 * Return value:
6212 * none
6213 **/
ipr_dump_ioasa(struct ipr_ioa_cfg * ioa_cfg,struct ipr_cmnd * ipr_cmd,struct ipr_resource_entry * res)6214 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
6215 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
6216 {
6217 int i;
6218 u16 data_len;
6219 u32 ioasc, fd_ioasc;
6220 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6221 __be32 *ioasa_data = (__be32 *)ioasa;
6222 int error_index;
6223
6224 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
6225 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
6226
6227 if (0 == ioasc)
6228 return;
6229
6230 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
6231 return;
6232
6233 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
6234 error_index = ipr_get_error(fd_ioasc);
6235 else
6236 error_index = ipr_get_error(ioasc);
6237
6238 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
6239 /* Don't log an error if the IOA already logged one */
6240 if (ioasa->hdr.ilid != 0)
6241 return;
6242
6243 if (!ipr_is_gscsi(res))
6244 return;
6245
6246 if (ipr_error_table[error_index].log_ioasa == 0)
6247 return;
6248 }
6249
6250 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
6251
6252 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
6253 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
6254 data_len = sizeof(struct ipr_ioasa64);
6255 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
6256 data_len = sizeof(struct ipr_ioasa);
6257
6258 ipr_err("IOASA Dump:\n");
6259
6260 for (i = 0; i < data_len / 4; i += 4) {
6261 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
6262 be32_to_cpu(ioasa_data[i]),
6263 be32_to_cpu(ioasa_data[i+1]),
6264 be32_to_cpu(ioasa_data[i+2]),
6265 be32_to_cpu(ioasa_data[i+3]));
6266 }
6267 }
6268
6269 /**
6270 * ipr_gen_sense - Generate SCSI sense data from an IOASA
6271 * @ioasa: IOASA
6272 * @sense_buf: sense data buffer
6273 *
6274 * Return value:
6275 * none
6276 **/
ipr_gen_sense(struct ipr_cmnd * ipr_cmd)6277 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
6278 {
6279 u32 failing_lba;
6280 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
6281 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
6282 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6283 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
6284
6285 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
6286
6287 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
6288 return;
6289
6290 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
6291
6292 if (ipr_is_vset_device(res) &&
6293 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
6294 ioasa->u.vset.failing_lba_hi != 0) {
6295 sense_buf[0] = 0x72;
6296 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
6297 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
6298 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
6299
6300 sense_buf[7] = 12;
6301 sense_buf[8] = 0;
6302 sense_buf[9] = 0x0A;
6303 sense_buf[10] = 0x80;
6304
6305 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
6306
6307 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
6308 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
6309 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
6310 sense_buf[15] = failing_lba & 0x000000ff;
6311
6312 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6313
6314 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
6315 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
6316 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
6317 sense_buf[19] = failing_lba & 0x000000ff;
6318 } else {
6319 sense_buf[0] = 0x70;
6320 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
6321 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
6322 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
6323
6324 /* Illegal request */
6325 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
6326 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
6327 sense_buf[7] = 10; /* additional length */
6328
6329 /* IOARCB was in error */
6330 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
6331 sense_buf[15] = 0xC0;
6332 else /* Parameter data was invalid */
6333 sense_buf[15] = 0x80;
6334
6335 sense_buf[16] =
6336 ((IPR_FIELD_POINTER_MASK &
6337 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
6338 sense_buf[17] =
6339 (IPR_FIELD_POINTER_MASK &
6340 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
6341 } else {
6342 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
6343 if (ipr_is_vset_device(res))
6344 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
6345 else
6346 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
6347
6348 sense_buf[0] |= 0x80; /* Or in the Valid bit */
6349 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
6350 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
6351 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
6352 sense_buf[6] = failing_lba & 0x000000ff;
6353 }
6354
6355 sense_buf[7] = 6; /* additional length */
6356 }
6357 }
6358 }
6359
6360 /**
6361 * ipr_get_autosense - Copy autosense data to sense buffer
6362 * @ipr_cmd: ipr command struct
6363 *
6364 * This function copies the autosense buffer to the buffer
6365 * in the scsi_cmd, if there is autosense available.
6366 *
6367 * Return value:
6368 * 1 if autosense was available / 0 if not
6369 **/
ipr_get_autosense(struct ipr_cmnd * ipr_cmd)6370 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
6371 {
6372 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
6373 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
6374
6375 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
6376 return 0;
6377
6378 if (ipr_cmd->ioa_cfg->sis64)
6379 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
6380 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
6381 SCSI_SENSE_BUFFERSIZE));
6382 else
6383 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
6384 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
6385 SCSI_SENSE_BUFFERSIZE));
6386 return 1;
6387 }
6388
6389 /**
6390 * ipr_erp_start - Process an error response for a SCSI op
6391 * @ioa_cfg: ioa config struct
6392 * @ipr_cmd: ipr command struct
6393 *
6394 * This function determines whether or not to initiate ERP
6395 * on the affected device.
6396 *
6397 * Return value:
6398 * nothing
6399 **/
ipr_erp_start(struct ipr_ioa_cfg * ioa_cfg,struct ipr_cmnd * ipr_cmd)6400 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
6401 struct ipr_cmnd *ipr_cmd)
6402 {
6403 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6404 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
6405 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6406 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
6407
6408 if (!res) {
6409 __ipr_scsi_eh_done(ipr_cmd);
6410 return;
6411 }
6412
6413 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
6414 ipr_gen_sense(ipr_cmd);
6415
6416 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6417
6418 switch (masked_ioasc) {
6419 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
6420 if (ipr_is_naca_model(res))
6421 scsi_cmd->result |= (DID_ABORT << 16);
6422 else
6423 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6424 break;
6425 case IPR_IOASC_IR_RESOURCE_HANDLE:
6426 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
6427 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6428 break;
6429 case IPR_IOASC_HW_SEL_TIMEOUT:
6430 scsi_cmd->result |= (DID_NO_CONNECT << 16);
6431 if (!ipr_is_naca_model(res))
6432 res->needs_sync_complete = 1;
6433 break;
6434 case IPR_IOASC_SYNC_REQUIRED:
6435 if (!res->in_erp)
6436 res->needs_sync_complete = 1;
6437 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6438 break;
6439 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
6440 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
6441 /*
6442 * exception: do not set DID_PASSTHROUGH on CHECK CONDITION
6443 * so SCSI mid-layer and upper layers handle it accordingly.
6444 */
6445 if (scsi_cmd->result != SAM_STAT_CHECK_CONDITION)
6446 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
6447 break;
6448 case IPR_IOASC_BUS_WAS_RESET:
6449 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
6450 /*
6451 * Report the bus reset and ask for a retry. The device
6452 * will give CC/UA the next command.
6453 */
6454 if (!res->resetting_device)
6455 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6456 scsi_cmd->result |= (DID_ERROR << 16);
6457 if (!ipr_is_naca_model(res))
6458 res->needs_sync_complete = 1;
6459 break;
6460 case IPR_IOASC_HW_DEV_BUS_STATUS:
6461 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6462 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6463 if (!ipr_get_autosense(ipr_cmd)) {
6464 if (!ipr_is_naca_model(res)) {
6465 ipr_erp_cancel_all(ipr_cmd);
6466 return;
6467 }
6468 }
6469 }
6470 if (!ipr_is_naca_model(res))
6471 res->needs_sync_complete = 1;
6472 break;
6473 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6474 break;
6475 case IPR_IOASC_IR_NON_OPTIMIZED:
6476 if (res->raw_mode) {
6477 res->raw_mode = 0;
6478 scsi_cmd->result |= (DID_IMM_RETRY << 16);
6479 } else
6480 scsi_cmd->result |= (DID_ERROR << 16);
6481 break;
6482 default:
6483 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6484 scsi_cmd->result |= (DID_ERROR << 16);
6485 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6486 res->needs_sync_complete = 1;
6487 break;
6488 }
6489
6490 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6491 scsi_cmd->scsi_done(scsi_cmd);
6492 if (ipr_cmd->eh_comp)
6493 complete(ipr_cmd->eh_comp);
6494 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6495 }
6496
6497 /**
6498 * ipr_scsi_done - mid-layer done function
6499 * @ipr_cmd: ipr command struct
6500 *
6501 * This function is invoked by the interrupt handler for
6502 * ops generated by the SCSI mid-layer
6503 *
6504 * Return value:
6505 * none
6506 **/
ipr_scsi_done(struct ipr_cmnd * ipr_cmd)6507 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6508 {
6509 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6510 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6511 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6512 unsigned long lock_flags;
6513
6514 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6515
6516 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6517 scsi_dma_unmap(scsi_cmd);
6518
6519 spin_lock_irqsave(ipr_cmd->hrrq->lock, lock_flags);
6520 scsi_cmd->scsi_done(scsi_cmd);
6521 if (ipr_cmd->eh_comp)
6522 complete(ipr_cmd->eh_comp);
6523 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6524 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, lock_flags);
6525 } else {
6526 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6527 spin_lock(&ipr_cmd->hrrq->_lock);
6528 ipr_erp_start(ioa_cfg, ipr_cmd);
6529 spin_unlock(&ipr_cmd->hrrq->_lock);
6530 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6531 }
6532 }
6533
6534 /**
6535 * ipr_queuecommand - Queue a mid-layer request
6536 * @shost: scsi host struct
6537 * @scsi_cmd: scsi command struct
6538 *
6539 * This function queues a request generated by the mid-layer.
6540 *
6541 * Return value:
6542 * 0 on success
6543 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6544 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6545 **/
ipr_queuecommand(struct Scsi_Host * shost,struct scsi_cmnd * scsi_cmd)6546 static int ipr_queuecommand(struct Scsi_Host *shost,
6547 struct scsi_cmnd *scsi_cmd)
6548 {
6549 struct ipr_ioa_cfg *ioa_cfg;
6550 struct ipr_resource_entry *res;
6551 struct ipr_ioarcb *ioarcb;
6552 struct ipr_cmnd *ipr_cmd;
6553 unsigned long hrrq_flags, lock_flags;
6554 int rc;
6555 struct ipr_hrr_queue *hrrq;
6556 int hrrq_id;
6557
6558 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6559
6560 scsi_cmd->result = (DID_OK << 16);
6561 res = scsi_cmd->device->hostdata;
6562
6563 if (ipr_is_gata(res) && res->sata_port) {
6564 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6565 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6566 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6567 return rc;
6568 }
6569
6570 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6571 hrrq = &ioa_cfg->hrrq[hrrq_id];
6572
6573 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6574 /*
6575 * We are currently blocking all devices due to a host reset
6576 * We have told the host to stop giving us new requests, but
6577 * ERP ops don't count. FIXME
6578 */
6579 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6580 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6581 return SCSI_MLQUEUE_HOST_BUSY;
6582 }
6583
6584 /*
6585 * FIXME - Create scsi_set_host_offline interface
6586 * and the ioa_is_dead check can be removed
6587 */
6588 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6589 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6590 goto err_nodev;
6591 }
6592
6593 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6594 if (ipr_cmd == NULL) {
6595 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6596 return SCSI_MLQUEUE_HOST_BUSY;
6597 }
6598 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6599
6600 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6601 ioarcb = &ipr_cmd->ioarcb;
6602
6603 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6604 ipr_cmd->scsi_cmd = scsi_cmd;
6605 ipr_cmd->done = ipr_scsi_eh_done;
6606
6607 if (ipr_is_gscsi(res)) {
6608 if (scsi_cmd->underflow == 0)
6609 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6610
6611 if (res->reset_occurred) {
6612 res->reset_occurred = 0;
6613 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6614 }
6615 }
6616
6617 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6618 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6619
6620 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6621 if (scsi_cmd->flags & SCMD_TAGGED)
6622 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_SIMPLE_TASK;
6623 else
6624 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_UNTAGGED_TASK;
6625 }
6626
6627 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6628 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6629 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6630 }
6631 if (res->raw_mode && ipr_is_af_dasd_device(res)) {
6632 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_PIPE;
6633
6634 if (scsi_cmd->underflow == 0)
6635 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6636 }
6637
6638 if (ioa_cfg->sis64)
6639 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6640 else
6641 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6642
6643 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6644 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6645 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6646 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6647 if (!rc)
6648 scsi_dma_unmap(scsi_cmd);
6649 return SCSI_MLQUEUE_HOST_BUSY;
6650 }
6651
6652 if (unlikely(hrrq->ioa_is_dead)) {
6653 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6654 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6655 scsi_dma_unmap(scsi_cmd);
6656 goto err_nodev;
6657 }
6658
6659 ioarcb->res_handle = res->res_handle;
6660 if (res->needs_sync_complete) {
6661 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6662 res->needs_sync_complete = 0;
6663 }
6664 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6665 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6666 ipr_send_command(ipr_cmd);
6667 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6668 return 0;
6669
6670 err_nodev:
6671 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6672 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6673 scsi_cmd->result = (DID_NO_CONNECT << 16);
6674 scsi_cmd->scsi_done(scsi_cmd);
6675 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6676 return 0;
6677 }
6678
6679 /**
6680 * ipr_ioctl - IOCTL handler
6681 * @sdev: scsi device struct
6682 * @cmd: IOCTL cmd
6683 * @arg: IOCTL arg
6684 *
6685 * Return value:
6686 * 0 on success / other on failure
6687 **/
ipr_ioctl(struct scsi_device * sdev,unsigned int cmd,void __user * arg)6688 static int ipr_ioctl(struct scsi_device *sdev, unsigned int cmd,
6689 void __user *arg)
6690 {
6691 struct ipr_resource_entry *res;
6692
6693 res = (struct ipr_resource_entry *)sdev->hostdata;
6694 if (res && ipr_is_gata(res)) {
6695 if (cmd == HDIO_GET_IDENTITY)
6696 return -ENOTTY;
6697 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6698 }
6699
6700 return -EINVAL;
6701 }
6702
6703 /**
6704 * ipr_info - Get information about the card/driver
6705 * @scsi_host: scsi host struct
6706 *
6707 * Return value:
6708 * pointer to buffer with description string
6709 **/
ipr_ioa_info(struct Scsi_Host * host)6710 static const char *ipr_ioa_info(struct Scsi_Host *host)
6711 {
6712 static char buffer[512];
6713 struct ipr_ioa_cfg *ioa_cfg;
6714 unsigned long lock_flags = 0;
6715
6716 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6717
6718 spin_lock_irqsave(host->host_lock, lock_flags);
6719 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6720 spin_unlock_irqrestore(host->host_lock, lock_flags);
6721
6722 return buffer;
6723 }
6724
6725 static struct scsi_host_template driver_template = {
6726 .module = THIS_MODULE,
6727 .name = "IPR",
6728 .info = ipr_ioa_info,
6729 .ioctl = ipr_ioctl,
6730 .queuecommand = ipr_queuecommand,
6731 .eh_abort_handler = ipr_eh_abort,
6732 .eh_device_reset_handler = ipr_eh_dev_reset,
6733 .eh_host_reset_handler = ipr_eh_host_reset,
6734 .slave_alloc = ipr_slave_alloc,
6735 .slave_configure = ipr_slave_configure,
6736 .slave_destroy = ipr_slave_destroy,
6737 .scan_finished = ipr_scan_finished,
6738 .target_alloc = ipr_target_alloc,
6739 .target_destroy = ipr_target_destroy,
6740 .change_queue_depth = ipr_change_queue_depth,
6741 .bios_param = ipr_biosparam,
6742 .can_queue = IPR_MAX_COMMANDS,
6743 .this_id = -1,
6744 .sg_tablesize = IPR_MAX_SGLIST,
6745 .max_sectors = IPR_IOA_MAX_SECTORS,
6746 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6747 .shost_attrs = ipr_ioa_attrs,
6748 .sdev_attrs = ipr_dev_attrs,
6749 .proc_name = IPR_NAME,
6750 };
6751
6752 /**
6753 * ipr_ata_phy_reset - libata phy_reset handler
6754 * @ap: ata port to reset
6755 *
6756 **/
ipr_ata_phy_reset(struct ata_port * ap)6757 static void ipr_ata_phy_reset(struct ata_port *ap)
6758 {
6759 unsigned long flags;
6760 struct ipr_sata_port *sata_port = ap->private_data;
6761 struct ipr_resource_entry *res = sata_port->res;
6762 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6763 int rc;
6764
6765 ENTER;
6766 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6767 while (ioa_cfg->in_reset_reload) {
6768 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6769 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6770 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6771 }
6772
6773 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6774 goto out_unlock;
6775
6776 rc = ipr_device_reset(ioa_cfg, res);
6777
6778 if (rc) {
6779 ap->link.device[0].class = ATA_DEV_NONE;
6780 goto out_unlock;
6781 }
6782
6783 ap->link.device[0].class = res->ata_class;
6784 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6785 ap->link.device[0].class = ATA_DEV_NONE;
6786
6787 out_unlock:
6788 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6789 LEAVE;
6790 }
6791
6792 /**
6793 * ipr_ata_post_internal - Cleanup after an internal command
6794 * @qc: ATA queued command
6795 *
6796 * Return value:
6797 * none
6798 **/
ipr_ata_post_internal(struct ata_queued_cmd * qc)6799 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6800 {
6801 struct ipr_sata_port *sata_port = qc->ap->private_data;
6802 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6803 struct ipr_cmnd *ipr_cmd;
6804 struct ipr_hrr_queue *hrrq;
6805 unsigned long flags;
6806
6807 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6808 while (ioa_cfg->in_reset_reload) {
6809 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6810 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6811 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6812 }
6813
6814 for_each_hrrq(hrrq, ioa_cfg) {
6815 spin_lock(&hrrq->_lock);
6816 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6817 if (ipr_cmd->qc == qc) {
6818 ipr_device_reset(ioa_cfg, sata_port->res);
6819 break;
6820 }
6821 }
6822 spin_unlock(&hrrq->_lock);
6823 }
6824 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6825 }
6826
6827 /**
6828 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6829 * @regs: destination
6830 * @tf: source ATA taskfile
6831 *
6832 * Return value:
6833 * none
6834 **/
ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs * regs,struct ata_taskfile * tf)6835 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6836 struct ata_taskfile *tf)
6837 {
6838 regs->feature = tf->feature;
6839 regs->nsect = tf->nsect;
6840 regs->lbal = tf->lbal;
6841 regs->lbam = tf->lbam;
6842 regs->lbah = tf->lbah;
6843 regs->device = tf->device;
6844 regs->command = tf->command;
6845 regs->hob_feature = tf->hob_feature;
6846 regs->hob_nsect = tf->hob_nsect;
6847 regs->hob_lbal = tf->hob_lbal;
6848 regs->hob_lbam = tf->hob_lbam;
6849 regs->hob_lbah = tf->hob_lbah;
6850 regs->ctl = tf->ctl;
6851 }
6852
6853 /**
6854 * ipr_sata_done - done function for SATA commands
6855 * @ipr_cmd: ipr command struct
6856 *
6857 * This function is invoked by the interrupt handler for
6858 * ops generated by the SCSI mid-layer to SATA devices
6859 *
6860 * Return value:
6861 * none
6862 **/
ipr_sata_done(struct ipr_cmnd * ipr_cmd)6863 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6864 {
6865 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6866 struct ata_queued_cmd *qc = ipr_cmd->qc;
6867 struct ipr_sata_port *sata_port = qc->ap->private_data;
6868 struct ipr_resource_entry *res = sata_port->res;
6869 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6870
6871 spin_lock(&ipr_cmd->hrrq->_lock);
6872 if (ipr_cmd->ioa_cfg->sis64)
6873 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6874 sizeof(struct ipr_ioasa_gata));
6875 else
6876 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6877 sizeof(struct ipr_ioasa_gata));
6878 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6879
6880 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6881 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6882
6883 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6884 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6885 else
6886 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6887 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6888 spin_unlock(&ipr_cmd->hrrq->_lock);
6889 ata_qc_complete(qc);
6890 }
6891
6892 /**
6893 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6894 * @ipr_cmd: ipr command struct
6895 * @qc: ATA queued command
6896 *
6897 **/
ipr_build_ata_ioadl64(struct ipr_cmnd * ipr_cmd,struct ata_queued_cmd * qc)6898 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6899 struct ata_queued_cmd *qc)
6900 {
6901 u32 ioadl_flags = 0;
6902 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6903 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ata_ioadl.ioadl64;
6904 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6905 int len = qc->nbytes;
6906 struct scatterlist *sg;
6907 unsigned int si;
6908 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6909
6910 if (len == 0)
6911 return;
6912
6913 if (qc->dma_dir == DMA_TO_DEVICE) {
6914 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6915 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6916 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6917 ioadl_flags = IPR_IOADL_FLAGS_READ;
6918
6919 ioarcb->data_transfer_length = cpu_to_be32(len);
6920 ioarcb->ioadl_len =
6921 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6922 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6923 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl.ioadl64));
6924
6925 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6926 ioadl64->flags = cpu_to_be32(ioadl_flags);
6927 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6928 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6929
6930 last_ioadl64 = ioadl64;
6931 ioadl64++;
6932 }
6933
6934 if (likely(last_ioadl64))
6935 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6936 }
6937
6938 /**
6939 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6940 * @ipr_cmd: ipr command struct
6941 * @qc: ATA queued command
6942 *
6943 **/
ipr_build_ata_ioadl(struct ipr_cmnd * ipr_cmd,struct ata_queued_cmd * qc)6944 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6945 struct ata_queued_cmd *qc)
6946 {
6947 u32 ioadl_flags = 0;
6948 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6949 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6950 struct ipr_ioadl_desc *last_ioadl = NULL;
6951 int len = qc->nbytes;
6952 struct scatterlist *sg;
6953 unsigned int si;
6954
6955 if (len == 0)
6956 return;
6957
6958 if (qc->dma_dir == DMA_TO_DEVICE) {
6959 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6960 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6961 ioarcb->data_transfer_length = cpu_to_be32(len);
6962 ioarcb->ioadl_len =
6963 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6964 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6965 ioadl_flags = IPR_IOADL_FLAGS_READ;
6966 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6967 ioarcb->read_ioadl_len =
6968 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6969 }
6970
6971 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6972 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6973 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6974
6975 last_ioadl = ioadl;
6976 ioadl++;
6977 }
6978
6979 if (likely(last_ioadl))
6980 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6981 }
6982
6983 /**
6984 * ipr_qc_defer - Get a free ipr_cmd
6985 * @qc: queued command
6986 *
6987 * Return value:
6988 * 0 if success
6989 **/
ipr_qc_defer(struct ata_queued_cmd * qc)6990 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6991 {
6992 struct ata_port *ap = qc->ap;
6993 struct ipr_sata_port *sata_port = ap->private_data;
6994 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6995 struct ipr_cmnd *ipr_cmd;
6996 struct ipr_hrr_queue *hrrq;
6997 int hrrq_id;
6998
6999 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
7000 hrrq = &ioa_cfg->hrrq[hrrq_id];
7001
7002 qc->lldd_task = NULL;
7003 spin_lock(&hrrq->_lock);
7004 if (unlikely(hrrq->ioa_is_dead)) {
7005 spin_unlock(&hrrq->_lock);
7006 return 0;
7007 }
7008
7009 if (unlikely(!hrrq->allow_cmds)) {
7010 spin_unlock(&hrrq->_lock);
7011 return ATA_DEFER_LINK;
7012 }
7013
7014 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
7015 if (ipr_cmd == NULL) {
7016 spin_unlock(&hrrq->_lock);
7017 return ATA_DEFER_LINK;
7018 }
7019
7020 qc->lldd_task = ipr_cmd;
7021 spin_unlock(&hrrq->_lock);
7022 return 0;
7023 }
7024
7025 /**
7026 * ipr_qc_issue - Issue a SATA qc to a device
7027 * @qc: queued command
7028 *
7029 * Return value:
7030 * 0 if success
7031 **/
ipr_qc_issue(struct ata_queued_cmd * qc)7032 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
7033 {
7034 struct ata_port *ap = qc->ap;
7035 struct ipr_sata_port *sata_port = ap->private_data;
7036 struct ipr_resource_entry *res = sata_port->res;
7037 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
7038 struct ipr_cmnd *ipr_cmd;
7039 struct ipr_ioarcb *ioarcb;
7040 struct ipr_ioarcb_ata_regs *regs;
7041
7042 if (qc->lldd_task == NULL)
7043 ipr_qc_defer(qc);
7044
7045 ipr_cmd = qc->lldd_task;
7046 if (ipr_cmd == NULL)
7047 return AC_ERR_SYSTEM;
7048
7049 qc->lldd_task = NULL;
7050 spin_lock(&ipr_cmd->hrrq->_lock);
7051 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
7052 ipr_cmd->hrrq->ioa_is_dead)) {
7053 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7054 spin_unlock(&ipr_cmd->hrrq->_lock);
7055 return AC_ERR_SYSTEM;
7056 }
7057
7058 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
7059 ioarcb = &ipr_cmd->ioarcb;
7060
7061 if (ioa_cfg->sis64) {
7062 regs = &ipr_cmd->i.ata_ioadl.regs;
7063 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
7064 } else
7065 regs = &ioarcb->u.add_data.u.regs;
7066
7067 memset(regs, 0, sizeof(*regs));
7068 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
7069
7070 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7071 ipr_cmd->qc = qc;
7072 ipr_cmd->done = ipr_sata_done;
7073 ipr_cmd->ioarcb.res_handle = res->res_handle;
7074 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
7075 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
7076 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
7077 ipr_cmd->dma_use_sg = qc->n_elem;
7078
7079 if (ioa_cfg->sis64)
7080 ipr_build_ata_ioadl64(ipr_cmd, qc);
7081 else
7082 ipr_build_ata_ioadl(ipr_cmd, qc);
7083
7084 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
7085 ipr_copy_sata_tf(regs, &qc->tf);
7086 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
7087 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
7088
7089 switch (qc->tf.protocol) {
7090 case ATA_PROT_NODATA:
7091 case ATA_PROT_PIO:
7092 break;
7093
7094 case ATA_PROT_DMA:
7095 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
7096 break;
7097
7098 case ATAPI_PROT_PIO:
7099 case ATAPI_PROT_NODATA:
7100 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
7101 break;
7102
7103 case ATAPI_PROT_DMA:
7104 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
7105 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
7106 break;
7107
7108 default:
7109 WARN_ON(1);
7110 spin_unlock(&ipr_cmd->hrrq->_lock);
7111 return AC_ERR_INVALID;
7112 }
7113
7114 ipr_send_command(ipr_cmd);
7115 spin_unlock(&ipr_cmd->hrrq->_lock);
7116
7117 return 0;
7118 }
7119
7120 /**
7121 * ipr_qc_fill_rtf - Read result TF
7122 * @qc: ATA queued command
7123 *
7124 * Return value:
7125 * true
7126 **/
ipr_qc_fill_rtf(struct ata_queued_cmd * qc)7127 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
7128 {
7129 struct ipr_sata_port *sata_port = qc->ap->private_data;
7130 struct ipr_ioasa_gata *g = &sata_port->ioasa;
7131 struct ata_taskfile *tf = &qc->result_tf;
7132
7133 tf->feature = g->error;
7134 tf->nsect = g->nsect;
7135 tf->lbal = g->lbal;
7136 tf->lbam = g->lbam;
7137 tf->lbah = g->lbah;
7138 tf->device = g->device;
7139 tf->command = g->status;
7140 tf->hob_nsect = g->hob_nsect;
7141 tf->hob_lbal = g->hob_lbal;
7142 tf->hob_lbam = g->hob_lbam;
7143 tf->hob_lbah = g->hob_lbah;
7144
7145 return true;
7146 }
7147
7148 static struct ata_port_operations ipr_sata_ops = {
7149 .phy_reset = ipr_ata_phy_reset,
7150 .hardreset = ipr_sata_reset,
7151 .post_internal_cmd = ipr_ata_post_internal,
7152 .qc_prep = ata_noop_qc_prep,
7153 .qc_defer = ipr_qc_defer,
7154 .qc_issue = ipr_qc_issue,
7155 .qc_fill_rtf = ipr_qc_fill_rtf,
7156 .port_start = ata_sas_port_start,
7157 .port_stop = ata_sas_port_stop
7158 };
7159
7160 static struct ata_port_info sata_port_info = {
7161 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA |
7162 ATA_FLAG_SAS_HOST,
7163 .pio_mask = ATA_PIO4_ONLY,
7164 .mwdma_mask = ATA_MWDMA2,
7165 .udma_mask = ATA_UDMA6,
7166 .port_ops = &ipr_sata_ops
7167 };
7168
7169 #ifdef CONFIG_PPC_PSERIES
7170 static const u16 ipr_blocked_processors[] = {
7171 PVR_NORTHSTAR,
7172 PVR_PULSAR,
7173 PVR_POWER4,
7174 PVR_ICESTAR,
7175 PVR_SSTAR,
7176 PVR_POWER4p,
7177 PVR_630,
7178 PVR_630p
7179 };
7180
7181 /**
7182 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
7183 * @ioa_cfg: ioa cfg struct
7184 *
7185 * Adapters that use Gemstone revision < 3.1 do not work reliably on
7186 * certain pSeries hardware. This function determines if the given
7187 * adapter is in one of these confgurations or not.
7188 *
7189 * Return value:
7190 * 1 if adapter is not supported / 0 if adapter is supported
7191 **/
ipr_invalid_adapter(struct ipr_ioa_cfg * ioa_cfg)7192 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
7193 {
7194 int i;
7195
7196 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
7197 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
7198 if (pvr_version_is(ipr_blocked_processors[i]))
7199 return 1;
7200 }
7201 }
7202 return 0;
7203 }
7204 #else
7205 #define ipr_invalid_adapter(ioa_cfg) 0
7206 #endif
7207
7208 /**
7209 * ipr_ioa_bringdown_done - IOA bring down completion.
7210 * @ipr_cmd: ipr command struct
7211 *
7212 * This function processes the completion of an adapter bring down.
7213 * It wakes any reset sleepers.
7214 *
7215 * Return value:
7216 * IPR_RC_JOB_RETURN
7217 **/
ipr_ioa_bringdown_done(struct ipr_cmnd * ipr_cmd)7218 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
7219 {
7220 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7221 int i;
7222
7223 ENTER;
7224 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
7225 ipr_trace;
7226 ioa_cfg->scsi_unblock = 1;
7227 schedule_work(&ioa_cfg->work_q);
7228 }
7229
7230 ioa_cfg->in_reset_reload = 0;
7231 ioa_cfg->reset_retries = 0;
7232 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
7233 spin_lock(&ioa_cfg->hrrq[i]._lock);
7234 ioa_cfg->hrrq[i].ioa_is_dead = 1;
7235 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7236 }
7237 wmb();
7238
7239 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7240 wake_up_all(&ioa_cfg->reset_wait_q);
7241 LEAVE;
7242
7243 return IPR_RC_JOB_RETURN;
7244 }
7245
7246 /**
7247 * ipr_ioa_reset_done - IOA reset completion.
7248 * @ipr_cmd: ipr command struct
7249 *
7250 * This function processes the completion of an adapter reset.
7251 * It schedules any necessary mid-layer add/removes and
7252 * wakes any reset sleepers.
7253 *
7254 * Return value:
7255 * IPR_RC_JOB_RETURN
7256 **/
ipr_ioa_reset_done(struct ipr_cmnd * ipr_cmd)7257 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
7258 {
7259 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7260 struct ipr_resource_entry *res;
7261 int j;
7262
7263 ENTER;
7264 ioa_cfg->in_reset_reload = 0;
7265 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
7266 spin_lock(&ioa_cfg->hrrq[j]._lock);
7267 ioa_cfg->hrrq[j].allow_cmds = 1;
7268 spin_unlock(&ioa_cfg->hrrq[j]._lock);
7269 }
7270 wmb();
7271 ioa_cfg->reset_cmd = NULL;
7272 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
7273
7274 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
7275 if (res->add_to_ml || res->del_from_ml) {
7276 ipr_trace;
7277 break;
7278 }
7279 }
7280 schedule_work(&ioa_cfg->work_q);
7281
7282 for (j = 0; j < IPR_NUM_HCAMS; j++) {
7283 list_del_init(&ioa_cfg->hostrcb[j]->queue);
7284 if (j < IPR_NUM_LOG_HCAMS)
7285 ipr_send_hcam(ioa_cfg,
7286 IPR_HCAM_CDB_OP_CODE_LOG_DATA,
7287 ioa_cfg->hostrcb[j]);
7288 else
7289 ipr_send_hcam(ioa_cfg,
7290 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
7291 ioa_cfg->hostrcb[j]);
7292 }
7293
7294 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
7295 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
7296
7297 ioa_cfg->reset_retries = 0;
7298 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7299 wake_up_all(&ioa_cfg->reset_wait_q);
7300
7301 ioa_cfg->scsi_unblock = 1;
7302 schedule_work(&ioa_cfg->work_q);
7303 LEAVE;
7304 return IPR_RC_JOB_RETURN;
7305 }
7306
7307 /**
7308 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
7309 * @supported_dev: supported device struct
7310 * @vpids: vendor product id struct
7311 *
7312 * Return value:
7313 * none
7314 **/
ipr_set_sup_dev_dflt(struct ipr_supported_device * supported_dev,struct ipr_std_inq_vpids * vpids)7315 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
7316 struct ipr_std_inq_vpids *vpids)
7317 {
7318 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
7319 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
7320 supported_dev->num_records = 1;
7321 supported_dev->data_length =
7322 cpu_to_be16(sizeof(struct ipr_supported_device));
7323 supported_dev->reserved = 0;
7324 }
7325
7326 /**
7327 * ipr_set_supported_devs - Send Set Supported Devices for a device
7328 * @ipr_cmd: ipr command struct
7329 *
7330 * This function sends a Set Supported Devices to the adapter
7331 *
7332 * Return value:
7333 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7334 **/
ipr_set_supported_devs(struct ipr_cmnd * ipr_cmd)7335 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
7336 {
7337 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7338 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
7339 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7340 struct ipr_resource_entry *res = ipr_cmd->u.res;
7341
7342 ipr_cmd->job_step = ipr_ioa_reset_done;
7343
7344 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
7345 if (!ipr_is_scsi_disk(res))
7346 continue;
7347
7348 ipr_cmd->u.res = res;
7349 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
7350
7351 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7352 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7353 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7354
7355 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
7356 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
7357 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
7358 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
7359
7360 ipr_init_ioadl(ipr_cmd,
7361 ioa_cfg->vpd_cbs_dma +
7362 offsetof(struct ipr_misc_cbs, supp_dev),
7363 sizeof(struct ipr_supported_device),
7364 IPR_IOADL_FLAGS_WRITE_LAST);
7365
7366 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7367 IPR_SET_SUP_DEVICE_TIMEOUT);
7368
7369 if (!ioa_cfg->sis64)
7370 ipr_cmd->job_step = ipr_set_supported_devs;
7371 LEAVE;
7372 return IPR_RC_JOB_RETURN;
7373 }
7374
7375 LEAVE;
7376 return IPR_RC_JOB_CONTINUE;
7377 }
7378
7379 /**
7380 * ipr_get_mode_page - Locate specified mode page
7381 * @mode_pages: mode page buffer
7382 * @page_code: page code to find
7383 * @len: minimum required length for mode page
7384 *
7385 * Return value:
7386 * pointer to mode page / NULL on failure
7387 **/
ipr_get_mode_page(struct ipr_mode_pages * mode_pages,u32 page_code,u32 len)7388 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
7389 u32 page_code, u32 len)
7390 {
7391 struct ipr_mode_page_hdr *mode_hdr;
7392 u32 page_length;
7393 u32 length;
7394
7395 if (!mode_pages || (mode_pages->hdr.length == 0))
7396 return NULL;
7397
7398 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
7399 mode_hdr = (struct ipr_mode_page_hdr *)
7400 (mode_pages->data + mode_pages->hdr.block_desc_len);
7401
7402 while (length) {
7403 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
7404 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
7405 return mode_hdr;
7406 break;
7407 } else {
7408 page_length = (sizeof(struct ipr_mode_page_hdr) +
7409 mode_hdr->page_length);
7410 length -= page_length;
7411 mode_hdr = (struct ipr_mode_page_hdr *)
7412 ((unsigned long)mode_hdr + page_length);
7413 }
7414 }
7415 return NULL;
7416 }
7417
7418 /**
7419 * ipr_check_term_power - Check for term power errors
7420 * @ioa_cfg: ioa config struct
7421 * @mode_pages: IOAFP mode pages buffer
7422 *
7423 * Check the IOAFP's mode page 28 for term power errors
7424 *
7425 * Return value:
7426 * nothing
7427 **/
ipr_check_term_power(struct ipr_ioa_cfg * ioa_cfg,struct ipr_mode_pages * mode_pages)7428 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
7429 struct ipr_mode_pages *mode_pages)
7430 {
7431 int i;
7432 int entry_length;
7433 struct ipr_dev_bus_entry *bus;
7434 struct ipr_mode_page28 *mode_page;
7435
7436 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7437 sizeof(struct ipr_mode_page28));
7438
7439 entry_length = mode_page->entry_length;
7440
7441 bus = mode_page->bus;
7442
7443 for (i = 0; i < mode_page->num_entries; i++) {
7444 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
7445 dev_err(&ioa_cfg->pdev->dev,
7446 "Term power is absent on scsi bus %d\n",
7447 bus->res_addr.bus);
7448 }
7449
7450 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
7451 }
7452 }
7453
7454 /**
7455 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
7456 * @ioa_cfg: ioa config struct
7457 *
7458 * Looks through the config table checking for SES devices. If
7459 * the SES device is in the SES table indicating a maximum SCSI
7460 * bus speed, the speed is limited for the bus.
7461 *
7462 * Return value:
7463 * none
7464 **/
ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg * ioa_cfg)7465 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
7466 {
7467 u32 max_xfer_rate;
7468 int i;
7469
7470 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
7471 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
7472 ioa_cfg->bus_attr[i].bus_width);
7473
7474 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
7475 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
7476 }
7477 }
7478
7479 /**
7480 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
7481 * @ioa_cfg: ioa config struct
7482 * @mode_pages: mode page 28 buffer
7483 *
7484 * Updates mode page 28 based on driver configuration
7485 *
7486 * Return value:
7487 * none
7488 **/
ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg * ioa_cfg,struct ipr_mode_pages * mode_pages)7489 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7490 struct ipr_mode_pages *mode_pages)
7491 {
7492 int i, entry_length;
7493 struct ipr_dev_bus_entry *bus;
7494 struct ipr_bus_attributes *bus_attr;
7495 struct ipr_mode_page28 *mode_page;
7496
7497 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7498 sizeof(struct ipr_mode_page28));
7499
7500 entry_length = mode_page->entry_length;
7501
7502 /* Loop for each device bus entry */
7503 for (i = 0, bus = mode_page->bus;
7504 i < mode_page->num_entries;
7505 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7506 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7507 dev_err(&ioa_cfg->pdev->dev,
7508 "Invalid resource address reported: 0x%08X\n",
7509 IPR_GET_PHYS_LOC(bus->res_addr));
7510 continue;
7511 }
7512
7513 bus_attr = &ioa_cfg->bus_attr[i];
7514 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7515 bus->bus_width = bus_attr->bus_width;
7516 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7517 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7518 if (bus_attr->qas_enabled)
7519 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7520 else
7521 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7522 }
7523 }
7524
7525 /**
7526 * ipr_build_mode_select - Build a mode select command
7527 * @ipr_cmd: ipr command struct
7528 * @res_handle: resource handle to send command to
7529 * @parm: Byte 2 of Mode Sense command
7530 * @dma_addr: DMA buffer address
7531 * @xfer_len: data transfer length
7532 *
7533 * Return value:
7534 * none
7535 **/
ipr_build_mode_select(struct ipr_cmnd * ipr_cmd,__be32 res_handle,u8 parm,dma_addr_t dma_addr,u8 xfer_len)7536 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7537 __be32 res_handle, u8 parm,
7538 dma_addr_t dma_addr, u8 xfer_len)
7539 {
7540 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7541
7542 ioarcb->res_handle = res_handle;
7543 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7544 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7545 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7546 ioarcb->cmd_pkt.cdb[1] = parm;
7547 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7548
7549 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7550 }
7551
7552 /**
7553 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7554 * @ipr_cmd: ipr command struct
7555 *
7556 * This function sets up the SCSI bus attributes and sends
7557 * a Mode Select for Page 28 to activate them.
7558 *
7559 * Return value:
7560 * IPR_RC_JOB_RETURN
7561 **/
ipr_ioafp_mode_select_page28(struct ipr_cmnd * ipr_cmd)7562 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7563 {
7564 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7565 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7566 int length;
7567
7568 ENTER;
7569 ipr_scsi_bus_speed_limit(ioa_cfg);
7570 ipr_check_term_power(ioa_cfg, mode_pages);
7571 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7572 length = mode_pages->hdr.length + 1;
7573 mode_pages->hdr.length = 0;
7574
7575 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7576 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7577 length);
7578
7579 ipr_cmd->job_step = ipr_set_supported_devs;
7580 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7581 struct ipr_resource_entry, queue);
7582 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7583
7584 LEAVE;
7585 return IPR_RC_JOB_RETURN;
7586 }
7587
7588 /**
7589 * ipr_build_mode_sense - Builds a mode sense command
7590 * @ipr_cmd: ipr command struct
7591 * @res: resource entry struct
7592 * @parm: Byte 2 of mode sense command
7593 * @dma_addr: DMA address of mode sense buffer
7594 * @xfer_len: Size of DMA buffer
7595 *
7596 * Return value:
7597 * none
7598 **/
ipr_build_mode_sense(struct ipr_cmnd * ipr_cmd,__be32 res_handle,u8 parm,dma_addr_t dma_addr,u8 xfer_len)7599 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7600 __be32 res_handle,
7601 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7602 {
7603 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7604
7605 ioarcb->res_handle = res_handle;
7606 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7607 ioarcb->cmd_pkt.cdb[2] = parm;
7608 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7609 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7610
7611 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7612 }
7613
7614 /**
7615 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7616 * @ipr_cmd: ipr command struct
7617 *
7618 * This function handles the failure of an IOA bringup command.
7619 *
7620 * Return value:
7621 * IPR_RC_JOB_RETURN
7622 **/
ipr_reset_cmd_failed(struct ipr_cmnd * ipr_cmd)7623 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7624 {
7625 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7626 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7627
7628 dev_err(&ioa_cfg->pdev->dev,
7629 "0x%02X failed with IOASC: 0x%08X\n",
7630 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7631
7632 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7633 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7634 return IPR_RC_JOB_RETURN;
7635 }
7636
7637 /**
7638 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7639 * @ipr_cmd: ipr command struct
7640 *
7641 * This function handles the failure of a Mode Sense to the IOAFP.
7642 * Some adapters do not handle all mode pages.
7643 *
7644 * Return value:
7645 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7646 **/
ipr_reset_mode_sense_failed(struct ipr_cmnd * ipr_cmd)7647 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7648 {
7649 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7650 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7651
7652 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7653 ipr_cmd->job_step = ipr_set_supported_devs;
7654 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7655 struct ipr_resource_entry, queue);
7656 return IPR_RC_JOB_CONTINUE;
7657 }
7658
7659 return ipr_reset_cmd_failed(ipr_cmd);
7660 }
7661
7662 /**
7663 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7664 * @ipr_cmd: ipr command struct
7665 *
7666 * This function send a Page 28 mode sense to the IOA to
7667 * retrieve SCSI bus attributes.
7668 *
7669 * Return value:
7670 * IPR_RC_JOB_RETURN
7671 **/
ipr_ioafp_mode_sense_page28(struct ipr_cmnd * ipr_cmd)7672 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7673 {
7674 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7675
7676 ENTER;
7677 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7678 0x28, ioa_cfg->vpd_cbs_dma +
7679 offsetof(struct ipr_misc_cbs, mode_pages),
7680 sizeof(struct ipr_mode_pages));
7681
7682 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7683 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7684
7685 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7686
7687 LEAVE;
7688 return IPR_RC_JOB_RETURN;
7689 }
7690
7691 /**
7692 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7693 * @ipr_cmd: ipr command struct
7694 *
7695 * This function enables dual IOA RAID support if possible.
7696 *
7697 * Return value:
7698 * IPR_RC_JOB_RETURN
7699 **/
ipr_ioafp_mode_select_page24(struct ipr_cmnd * ipr_cmd)7700 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7701 {
7702 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7703 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7704 struct ipr_mode_page24 *mode_page;
7705 int length;
7706
7707 ENTER;
7708 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7709 sizeof(struct ipr_mode_page24));
7710
7711 if (mode_page)
7712 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7713
7714 length = mode_pages->hdr.length + 1;
7715 mode_pages->hdr.length = 0;
7716
7717 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7718 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7719 length);
7720
7721 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7722 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7723
7724 LEAVE;
7725 return IPR_RC_JOB_RETURN;
7726 }
7727
7728 /**
7729 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7730 * @ipr_cmd: ipr command struct
7731 *
7732 * This function handles the failure of a Mode Sense to the IOAFP.
7733 * Some adapters do not handle all mode pages.
7734 *
7735 * Return value:
7736 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7737 **/
ipr_reset_mode_sense_page24_failed(struct ipr_cmnd * ipr_cmd)7738 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7739 {
7740 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7741
7742 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7743 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7744 return IPR_RC_JOB_CONTINUE;
7745 }
7746
7747 return ipr_reset_cmd_failed(ipr_cmd);
7748 }
7749
7750 /**
7751 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7752 * @ipr_cmd: ipr command struct
7753 *
7754 * This function send a mode sense to the IOA to retrieve
7755 * the IOA Advanced Function Control mode page.
7756 *
7757 * Return value:
7758 * IPR_RC_JOB_RETURN
7759 **/
ipr_ioafp_mode_sense_page24(struct ipr_cmnd * ipr_cmd)7760 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7761 {
7762 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7763
7764 ENTER;
7765 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7766 0x24, ioa_cfg->vpd_cbs_dma +
7767 offsetof(struct ipr_misc_cbs, mode_pages),
7768 sizeof(struct ipr_mode_pages));
7769
7770 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7771 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7772
7773 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7774
7775 LEAVE;
7776 return IPR_RC_JOB_RETURN;
7777 }
7778
7779 /**
7780 * ipr_init_res_table - Initialize the resource table
7781 * @ipr_cmd: ipr command struct
7782 *
7783 * This function looks through the existing resource table, comparing
7784 * it with the config table. This function will take care of old/new
7785 * devices and schedule adding/removing them from the mid-layer
7786 * as appropriate.
7787 *
7788 * Return value:
7789 * IPR_RC_JOB_CONTINUE
7790 **/
ipr_init_res_table(struct ipr_cmnd * ipr_cmd)7791 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7792 {
7793 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7794 struct ipr_resource_entry *res, *temp;
7795 struct ipr_config_table_entry_wrapper cfgtew;
7796 int entries, found, flag, i;
7797 LIST_HEAD(old_res);
7798
7799 ENTER;
7800 if (ioa_cfg->sis64)
7801 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7802 else
7803 flag = ioa_cfg->u.cfg_table->hdr.flags;
7804
7805 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7806 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7807
7808 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7809 list_move_tail(&res->queue, &old_res);
7810
7811 if (ioa_cfg->sis64)
7812 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7813 else
7814 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7815
7816 for (i = 0; i < entries; i++) {
7817 if (ioa_cfg->sis64)
7818 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7819 else
7820 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7821 found = 0;
7822
7823 list_for_each_entry_safe(res, temp, &old_res, queue) {
7824 if (ipr_is_same_device(res, &cfgtew)) {
7825 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7826 found = 1;
7827 break;
7828 }
7829 }
7830
7831 if (!found) {
7832 if (list_empty(&ioa_cfg->free_res_q)) {
7833 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7834 break;
7835 }
7836
7837 found = 1;
7838 res = list_entry(ioa_cfg->free_res_q.next,
7839 struct ipr_resource_entry, queue);
7840 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7841 ipr_init_res_entry(res, &cfgtew);
7842 res->add_to_ml = 1;
7843 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7844 res->sdev->allow_restart = 1;
7845
7846 if (found)
7847 ipr_update_res_entry(res, &cfgtew);
7848 }
7849
7850 list_for_each_entry_safe(res, temp, &old_res, queue) {
7851 if (res->sdev) {
7852 res->del_from_ml = 1;
7853 res->res_handle = IPR_INVALID_RES_HANDLE;
7854 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7855 }
7856 }
7857
7858 list_for_each_entry_safe(res, temp, &old_res, queue) {
7859 ipr_clear_res_target(res);
7860 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7861 }
7862
7863 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7864 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7865 else
7866 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7867
7868 LEAVE;
7869 return IPR_RC_JOB_CONTINUE;
7870 }
7871
7872 /**
7873 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7874 * @ipr_cmd: ipr command struct
7875 *
7876 * This function sends a Query IOA Configuration command
7877 * to the adapter to retrieve the IOA configuration table.
7878 *
7879 * Return value:
7880 * IPR_RC_JOB_RETURN
7881 **/
ipr_ioafp_query_ioa_cfg(struct ipr_cmnd * ipr_cmd)7882 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7883 {
7884 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7885 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7886 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7887 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7888
7889 ENTER;
7890 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7891 ioa_cfg->dual_raid = 1;
7892 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7893 ucode_vpd->major_release, ucode_vpd->card_type,
7894 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7895 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7896 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7897
7898 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7899 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7900 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7901 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7902
7903 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7904 IPR_IOADL_FLAGS_READ_LAST);
7905
7906 ipr_cmd->job_step = ipr_init_res_table;
7907
7908 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7909
7910 LEAVE;
7911 return IPR_RC_JOB_RETURN;
7912 }
7913
ipr_ioa_service_action_failed(struct ipr_cmnd * ipr_cmd)7914 static int ipr_ioa_service_action_failed(struct ipr_cmnd *ipr_cmd)
7915 {
7916 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7917
7918 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT)
7919 return IPR_RC_JOB_CONTINUE;
7920
7921 return ipr_reset_cmd_failed(ipr_cmd);
7922 }
7923
ipr_build_ioa_service_action(struct ipr_cmnd * ipr_cmd,__be32 res_handle,u8 sa_code)7924 static void ipr_build_ioa_service_action(struct ipr_cmnd *ipr_cmd,
7925 __be32 res_handle, u8 sa_code)
7926 {
7927 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7928
7929 ioarcb->res_handle = res_handle;
7930 ioarcb->cmd_pkt.cdb[0] = IPR_IOA_SERVICE_ACTION;
7931 ioarcb->cmd_pkt.cdb[1] = sa_code;
7932 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7933 }
7934
7935 /**
7936 * ipr_ioafp_set_caching_parameters - Issue Set Cache parameters service
7937 * action
7938 *
7939 * Return value:
7940 * none
7941 **/
ipr_ioafp_set_caching_parameters(struct ipr_cmnd * ipr_cmd)7942 static int ipr_ioafp_set_caching_parameters(struct ipr_cmnd *ipr_cmd)
7943 {
7944 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7945 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7946 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
7947
7948 ENTER;
7949
7950 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7951
7952 if (pageC4->cache_cap[0] & IPR_CAP_SYNC_CACHE) {
7953 ipr_build_ioa_service_action(ipr_cmd,
7954 cpu_to_be32(IPR_IOA_RES_HANDLE),
7955 IPR_IOA_SA_CHANGE_CACHE_PARAMS);
7956
7957 ioarcb->cmd_pkt.cdb[2] = 0x40;
7958
7959 ipr_cmd->job_step_failed = ipr_ioa_service_action_failed;
7960 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7961 IPR_SET_SUP_DEVICE_TIMEOUT);
7962
7963 LEAVE;
7964 return IPR_RC_JOB_RETURN;
7965 }
7966
7967 LEAVE;
7968 return IPR_RC_JOB_CONTINUE;
7969 }
7970
7971 /**
7972 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7973 * @ipr_cmd: ipr command struct
7974 *
7975 * This utility function sends an inquiry to the adapter.
7976 *
7977 * Return value:
7978 * none
7979 **/
ipr_ioafp_inquiry(struct ipr_cmnd * ipr_cmd,u8 flags,u8 page,dma_addr_t dma_addr,u8 xfer_len)7980 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7981 dma_addr_t dma_addr, u8 xfer_len)
7982 {
7983 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7984
7985 ENTER;
7986 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7987 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7988
7989 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7990 ioarcb->cmd_pkt.cdb[1] = flags;
7991 ioarcb->cmd_pkt.cdb[2] = page;
7992 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7993
7994 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7995
7996 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7997 LEAVE;
7998 }
7999
8000 /**
8001 * ipr_inquiry_page_supported - Is the given inquiry page supported
8002 * @page0: inquiry page 0 buffer
8003 * @page: page code.
8004 *
8005 * This function determines if the specified inquiry page is supported.
8006 *
8007 * Return value:
8008 * 1 if page is supported / 0 if not
8009 **/
ipr_inquiry_page_supported(struct ipr_inquiry_page0 * page0,u8 page)8010 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
8011 {
8012 int i;
8013
8014 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
8015 if (page0->page[i] == page)
8016 return 1;
8017
8018 return 0;
8019 }
8020
8021 /**
8022 * ipr_ioafp_pageC4_inquiry - Send a Page 0xC4 Inquiry to the adapter.
8023 * @ipr_cmd: ipr command struct
8024 *
8025 * This function sends a Page 0xC4 inquiry to the adapter
8026 * to retrieve software VPD information.
8027 *
8028 * Return value:
8029 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8030 **/
ipr_ioafp_pageC4_inquiry(struct ipr_cmnd * ipr_cmd)8031 static int ipr_ioafp_pageC4_inquiry(struct ipr_cmnd *ipr_cmd)
8032 {
8033 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8034 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
8035 struct ipr_inquiry_pageC4 *pageC4 = &ioa_cfg->vpd_cbs->pageC4_data;
8036
8037 ENTER;
8038 ipr_cmd->job_step = ipr_ioafp_set_caching_parameters;
8039 memset(pageC4, 0, sizeof(*pageC4));
8040
8041 if (ipr_inquiry_page_supported(page0, 0xC4)) {
8042 ipr_ioafp_inquiry(ipr_cmd, 1, 0xC4,
8043 (ioa_cfg->vpd_cbs_dma
8044 + offsetof(struct ipr_misc_cbs,
8045 pageC4_data)),
8046 sizeof(struct ipr_inquiry_pageC4));
8047 return IPR_RC_JOB_RETURN;
8048 }
8049
8050 LEAVE;
8051 return IPR_RC_JOB_CONTINUE;
8052 }
8053
8054 /**
8055 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
8056 * @ipr_cmd: ipr command struct
8057 *
8058 * This function sends a Page 0xD0 inquiry to the adapter
8059 * to retrieve adapter capabilities.
8060 *
8061 * Return value:
8062 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8063 **/
ipr_ioafp_cap_inquiry(struct ipr_cmnd * ipr_cmd)8064 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
8065 {
8066 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8067 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
8068 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
8069
8070 ENTER;
8071 ipr_cmd->job_step = ipr_ioafp_pageC4_inquiry;
8072 memset(cap, 0, sizeof(*cap));
8073
8074 if (ipr_inquiry_page_supported(page0, 0xD0)) {
8075 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
8076 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
8077 sizeof(struct ipr_inquiry_cap));
8078 return IPR_RC_JOB_RETURN;
8079 }
8080
8081 LEAVE;
8082 return IPR_RC_JOB_CONTINUE;
8083 }
8084
8085 /**
8086 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
8087 * @ipr_cmd: ipr command struct
8088 *
8089 * This function sends a Page 3 inquiry to the adapter
8090 * to retrieve software VPD information.
8091 *
8092 * Return value:
8093 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8094 **/
ipr_ioafp_page3_inquiry(struct ipr_cmnd * ipr_cmd)8095 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
8096 {
8097 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8098
8099 ENTER;
8100
8101 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
8102
8103 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
8104 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
8105 sizeof(struct ipr_inquiry_page3));
8106
8107 LEAVE;
8108 return IPR_RC_JOB_RETURN;
8109 }
8110
8111 /**
8112 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
8113 * @ipr_cmd: ipr command struct
8114 *
8115 * This function sends a Page 0 inquiry to the adapter
8116 * to retrieve supported inquiry pages.
8117 *
8118 * Return value:
8119 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8120 **/
ipr_ioafp_page0_inquiry(struct ipr_cmnd * ipr_cmd)8121 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
8122 {
8123 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8124 char type[5];
8125
8126 ENTER;
8127
8128 /* Grab the type out of the VPD and store it away */
8129 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
8130 type[4] = '\0';
8131 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
8132
8133 if (ipr_invalid_adapter(ioa_cfg)) {
8134 dev_err(&ioa_cfg->pdev->dev,
8135 "Adapter not supported in this hardware configuration.\n");
8136
8137 if (!ipr_testmode) {
8138 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
8139 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8140 list_add_tail(&ipr_cmd->queue,
8141 &ioa_cfg->hrrq->hrrq_free_q);
8142 return IPR_RC_JOB_RETURN;
8143 }
8144 }
8145
8146 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
8147
8148 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
8149 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
8150 sizeof(struct ipr_inquiry_page0));
8151
8152 LEAVE;
8153 return IPR_RC_JOB_RETURN;
8154 }
8155
8156 /**
8157 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
8158 * @ipr_cmd: ipr command struct
8159 *
8160 * This function sends a standard inquiry to the adapter.
8161 *
8162 * Return value:
8163 * IPR_RC_JOB_RETURN
8164 **/
ipr_ioafp_std_inquiry(struct ipr_cmnd * ipr_cmd)8165 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
8166 {
8167 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8168
8169 ENTER;
8170 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
8171
8172 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
8173 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
8174 sizeof(struct ipr_ioa_vpd));
8175
8176 LEAVE;
8177 return IPR_RC_JOB_RETURN;
8178 }
8179
8180 /**
8181 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
8182 * @ipr_cmd: ipr command struct
8183 *
8184 * This function send an Identify Host Request Response Queue
8185 * command to establish the HRRQ with the adapter.
8186 *
8187 * Return value:
8188 * IPR_RC_JOB_RETURN
8189 **/
ipr_ioafp_identify_hrrq(struct ipr_cmnd * ipr_cmd)8190 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
8191 {
8192 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8193 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
8194 struct ipr_hrr_queue *hrrq;
8195
8196 ENTER;
8197 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
8198 if (ioa_cfg->identify_hrrq_index == 0)
8199 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
8200
8201 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
8202 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
8203
8204 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
8205 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8206
8207 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8208 if (ioa_cfg->sis64)
8209 ioarcb->cmd_pkt.cdb[1] = 0x1;
8210
8211 if (ioa_cfg->nvectors == 1)
8212 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
8213 else
8214 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
8215
8216 ioarcb->cmd_pkt.cdb[2] =
8217 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
8218 ioarcb->cmd_pkt.cdb[3] =
8219 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
8220 ioarcb->cmd_pkt.cdb[4] =
8221 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
8222 ioarcb->cmd_pkt.cdb[5] =
8223 ((u64) hrrq->host_rrq_dma) & 0xff;
8224 ioarcb->cmd_pkt.cdb[7] =
8225 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
8226 ioarcb->cmd_pkt.cdb[8] =
8227 (sizeof(u32) * hrrq->size) & 0xff;
8228
8229 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8230 ioarcb->cmd_pkt.cdb[9] =
8231 ioa_cfg->identify_hrrq_index;
8232
8233 if (ioa_cfg->sis64) {
8234 ioarcb->cmd_pkt.cdb[10] =
8235 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
8236 ioarcb->cmd_pkt.cdb[11] =
8237 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
8238 ioarcb->cmd_pkt.cdb[12] =
8239 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
8240 ioarcb->cmd_pkt.cdb[13] =
8241 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
8242 }
8243
8244 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
8245 ioarcb->cmd_pkt.cdb[14] =
8246 ioa_cfg->identify_hrrq_index;
8247
8248 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8249 IPR_INTERNAL_TIMEOUT);
8250
8251 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
8252 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8253
8254 LEAVE;
8255 return IPR_RC_JOB_RETURN;
8256 }
8257
8258 LEAVE;
8259 return IPR_RC_JOB_CONTINUE;
8260 }
8261
8262 /**
8263 * ipr_reset_timer_done - Adapter reset timer function
8264 * @ipr_cmd: ipr command struct
8265 *
8266 * Description: This function is used in adapter reset processing
8267 * for timing events. If the reset_cmd pointer in the IOA
8268 * config struct is not this adapter's we are doing nested
8269 * resets and fail_all_ops will take care of freeing the
8270 * command block.
8271 *
8272 * Return value:
8273 * none
8274 **/
ipr_reset_timer_done(struct timer_list * t)8275 static void ipr_reset_timer_done(struct timer_list *t)
8276 {
8277 struct ipr_cmnd *ipr_cmd = from_timer(ipr_cmd, t, timer);
8278 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8279 unsigned long lock_flags = 0;
8280
8281 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8282
8283 if (ioa_cfg->reset_cmd == ipr_cmd) {
8284 list_del(&ipr_cmd->queue);
8285 ipr_cmd->done(ipr_cmd);
8286 }
8287
8288 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8289 }
8290
8291 /**
8292 * ipr_reset_start_timer - Start a timer for adapter reset job
8293 * @ipr_cmd: ipr command struct
8294 * @timeout: timeout value
8295 *
8296 * Description: This function is used in adapter reset processing
8297 * for timing events. If the reset_cmd pointer in the IOA
8298 * config struct is not this adapter's we are doing nested
8299 * resets and fail_all_ops will take care of freeing the
8300 * command block.
8301 *
8302 * Return value:
8303 * none
8304 **/
ipr_reset_start_timer(struct ipr_cmnd * ipr_cmd,unsigned long timeout)8305 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
8306 unsigned long timeout)
8307 {
8308
8309 ENTER;
8310 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8311 ipr_cmd->done = ipr_reset_ioa_job;
8312
8313 ipr_cmd->timer.expires = jiffies + timeout;
8314 ipr_cmd->timer.function = ipr_reset_timer_done;
8315 add_timer(&ipr_cmd->timer);
8316 }
8317
8318 /**
8319 * ipr_init_ioa_mem - Initialize ioa_cfg control block
8320 * @ioa_cfg: ioa cfg struct
8321 *
8322 * Return value:
8323 * nothing
8324 **/
ipr_init_ioa_mem(struct ipr_ioa_cfg * ioa_cfg)8325 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
8326 {
8327 struct ipr_hrr_queue *hrrq;
8328
8329 for_each_hrrq(hrrq, ioa_cfg) {
8330 spin_lock(&hrrq->_lock);
8331 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
8332
8333 /* Initialize Host RRQ pointers */
8334 hrrq->hrrq_start = hrrq->host_rrq;
8335 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
8336 hrrq->hrrq_curr = hrrq->hrrq_start;
8337 hrrq->toggle_bit = 1;
8338 spin_unlock(&hrrq->_lock);
8339 }
8340 wmb();
8341
8342 ioa_cfg->identify_hrrq_index = 0;
8343 if (ioa_cfg->hrrq_num == 1)
8344 atomic_set(&ioa_cfg->hrrq_index, 0);
8345 else
8346 atomic_set(&ioa_cfg->hrrq_index, 1);
8347
8348 /* Zero out config table */
8349 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
8350 }
8351
8352 /**
8353 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
8354 * @ipr_cmd: ipr command struct
8355 *
8356 * Return value:
8357 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8358 **/
ipr_reset_next_stage(struct ipr_cmnd * ipr_cmd)8359 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
8360 {
8361 unsigned long stage, stage_time;
8362 u32 feedback;
8363 volatile u32 int_reg;
8364 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8365 u64 maskval = 0;
8366
8367 feedback = readl(ioa_cfg->regs.init_feedback_reg);
8368 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
8369 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
8370
8371 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
8372
8373 /* sanity check the stage_time value */
8374 if (stage_time == 0)
8375 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
8376 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
8377 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
8378 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
8379 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
8380
8381 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
8382 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
8383 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8384 stage_time = ioa_cfg->transop_timeout;
8385 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8386 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
8387 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8388 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8389 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8390 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8391 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
8392 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
8393 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8394 return IPR_RC_JOB_CONTINUE;
8395 }
8396 }
8397
8398 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
8399 ipr_cmd->timer.function = ipr_oper_timeout;
8400 ipr_cmd->done = ipr_reset_ioa_job;
8401 add_timer(&ipr_cmd->timer);
8402
8403 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8404
8405 return IPR_RC_JOB_RETURN;
8406 }
8407
8408 /**
8409 * ipr_reset_enable_ioa - Enable the IOA following a reset.
8410 * @ipr_cmd: ipr command struct
8411 *
8412 * This function reinitializes some control blocks and
8413 * enables destructive diagnostics on the adapter.
8414 *
8415 * Return value:
8416 * IPR_RC_JOB_RETURN
8417 **/
ipr_reset_enable_ioa(struct ipr_cmnd * ipr_cmd)8418 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
8419 {
8420 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8421 volatile u32 int_reg;
8422 volatile u64 maskval;
8423 int i;
8424
8425 ENTER;
8426 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
8427 ipr_init_ioa_mem(ioa_cfg);
8428
8429 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8430 spin_lock(&ioa_cfg->hrrq[i]._lock);
8431 ioa_cfg->hrrq[i].allow_interrupts = 1;
8432 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8433 }
8434 if (ioa_cfg->sis64) {
8435 /* Set the adapter to the correct endian mode. */
8436 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8437 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8438 }
8439
8440 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
8441
8442 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
8443 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
8444 ioa_cfg->regs.clr_interrupt_mask_reg32);
8445 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8446 return IPR_RC_JOB_CONTINUE;
8447 }
8448
8449 /* Enable destructive diagnostics on IOA */
8450 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
8451
8452 if (ioa_cfg->sis64) {
8453 maskval = IPR_PCII_IPL_STAGE_CHANGE;
8454 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
8455 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
8456 } else
8457 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
8458
8459 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
8460
8461 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
8462
8463 if (ioa_cfg->sis64) {
8464 ipr_cmd->job_step = ipr_reset_next_stage;
8465 return IPR_RC_JOB_CONTINUE;
8466 }
8467
8468 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
8469 ipr_cmd->timer.function = ipr_oper_timeout;
8470 ipr_cmd->done = ipr_reset_ioa_job;
8471 add_timer(&ipr_cmd->timer);
8472 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8473
8474 LEAVE;
8475 return IPR_RC_JOB_RETURN;
8476 }
8477
8478 /**
8479 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
8480 * @ipr_cmd: ipr command struct
8481 *
8482 * This function is invoked when an adapter dump has run out
8483 * of processing time.
8484 *
8485 * Return value:
8486 * IPR_RC_JOB_CONTINUE
8487 **/
ipr_reset_wait_for_dump(struct ipr_cmnd * ipr_cmd)8488 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
8489 {
8490 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8491
8492 if (ioa_cfg->sdt_state == GET_DUMP)
8493 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8494 else if (ioa_cfg->sdt_state == READ_DUMP)
8495 ioa_cfg->sdt_state = ABORT_DUMP;
8496
8497 ioa_cfg->dump_timeout = 1;
8498 ipr_cmd->job_step = ipr_reset_alert;
8499
8500 return IPR_RC_JOB_CONTINUE;
8501 }
8502
8503 /**
8504 * ipr_unit_check_no_data - Log a unit check/no data error log
8505 * @ioa_cfg: ioa config struct
8506 *
8507 * Logs an error indicating the adapter unit checked, but for some
8508 * reason, we were unable to fetch the unit check buffer.
8509 *
8510 * Return value:
8511 * nothing
8512 **/
ipr_unit_check_no_data(struct ipr_ioa_cfg * ioa_cfg)8513 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
8514 {
8515 ioa_cfg->errors_logged++;
8516 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
8517 }
8518
8519 /**
8520 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
8521 * @ioa_cfg: ioa config struct
8522 *
8523 * Fetches the unit check buffer from the adapter by clocking the data
8524 * through the mailbox register.
8525 *
8526 * Return value:
8527 * nothing
8528 **/
ipr_get_unit_check_buffer(struct ipr_ioa_cfg * ioa_cfg)8529 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
8530 {
8531 unsigned long mailbox;
8532 struct ipr_hostrcb *hostrcb;
8533 struct ipr_uc_sdt sdt;
8534 int rc, length;
8535 u32 ioasc;
8536
8537 mailbox = readl(ioa_cfg->ioa_mailbox);
8538
8539 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
8540 ipr_unit_check_no_data(ioa_cfg);
8541 return;
8542 }
8543
8544 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
8545 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
8546 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
8547
8548 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
8549 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
8550 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
8551 ipr_unit_check_no_data(ioa_cfg);
8552 return;
8553 }
8554
8555 /* Find length of the first sdt entry (UC buffer) */
8556 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
8557 length = be32_to_cpu(sdt.entry[0].end_token);
8558 else
8559 length = (be32_to_cpu(sdt.entry[0].end_token) -
8560 be32_to_cpu(sdt.entry[0].start_token)) &
8561 IPR_FMT2_MBX_ADDR_MASK;
8562
8563 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
8564 struct ipr_hostrcb, queue);
8565 list_del_init(&hostrcb->queue);
8566 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
8567
8568 rc = ipr_get_ldump_data_section(ioa_cfg,
8569 be32_to_cpu(sdt.entry[0].start_token),
8570 (__be32 *)&hostrcb->hcam,
8571 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
8572
8573 if (!rc) {
8574 ipr_handle_log_data(ioa_cfg, hostrcb);
8575 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
8576 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
8577 ioa_cfg->sdt_state == GET_DUMP)
8578 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8579 } else
8580 ipr_unit_check_no_data(ioa_cfg);
8581
8582 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
8583 }
8584
8585 /**
8586 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8587 * @ipr_cmd: ipr command struct
8588 *
8589 * Description: This function will call to get the unit check buffer.
8590 *
8591 * Return value:
8592 * IPR_RC_JOB_RETURN
8593 **/
ipr_reset_get_unit_check_job(struct ipr_cmnd * ipr_cmd)8594 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8595 {
8596 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8597
8598 ENTER;
8599 ioa_cfg->ioa_unit_checked = 0;
8600 ipr_get_unit_check_buffer(ioa_cfg);
8601 ipr_cmd->job_step = ipr_reset_alert;
8602 ipr_reset_start_timer(ipr_cmd, 0);
8603
8604 LEAVE;
8605 return IPR_RC_JOB_RETURN;
8606 }
8607
ipr_dump_mailbox_wait(struct ipr_cmnd * ipr_cmd)8608 static int ipr_dump_mailbox_wait(struct ipr_cmnd *ipr_cmd)
8609 {
8610 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8611
8612 ENTER;
8613
8614 if (ioa_cfg->sdt_state != GET_DUMP)
8615 return IPR_RC_JOB_RETURN;
8616
8617 if (!ioa_cfg->sis64 || !ipr_cmd->u.time_left ||
8618 (readl(ioa_cfg->regs.sense_interrupt_reg) &
8619 IPR_PCII_MAILBOX_STABLE)) {
8620
8621 if (!ipr_cmd->u.time_left)
8622 dev_err(&ioa_cfg->pdev->dev,
8623 "Timed out waiting for Mailbox register.\n");
8624
8625 ioa_cfg->sdt_state = READ_DUMP;
8626 ioa_cfg->dump_timeout = 0;
8627 if (ioa_cfg->sis64)
8628 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8629 else
8630 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8631 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8632 schedule_work(&ioa_cfg->work_q);
8633
8634 } else {
8635 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8636 ipr_reset_start_timer(ipr_cmd,
8637 IPR_CHECK_FOR_RESET_TIMEOUT);
8638 }
8639
8640 LEAVE;
8641 return IPR_RC_JOB_RETURN;
8642 }
8643
8644 /**
8645 * ipr_reset_restore_cfg_space - Restore PCI config space.
8646 * @ipr_cmd: ipr command struct
8647 *
8648 * Description: This function restores the saved PCI config space of
8649 * the adapter, fails all outstanding ops back to the callers, and
8650 * fetches the dump/unit check if applicable to this reset.
8651 *
8652 * Return value:
8653 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8654 **/
ipr_reset_restore_cfg_space(struct ipr_cmnd * ipr_cmd)8655 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8656 {
8657 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8658 u32 int_reg;
8659
8660 ENTER;
8661 ioa_cfg->pdev->state_saved = true;
8662 pci_restore_state(ioa_cfg->pdev);
8663
8664 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8665 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8666 return IPR_RC_JOB_CONTINUE;
8667 }
8668
8669 ipr_fail_all_ops(ioa_cfg);
8670
8671 if (ioa_cfg->sis64) {
8672 /* Set the adapter to the correct endian mode. */
8673 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8674 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8675 }
8676
8677 if (ioa_cfg->ioa_unit_checked) {
8678 if (ioa_cfg->sis64) {
8679 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8680 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8681 return IPR_RC_JOB_RETURN;
8682 } else {
8683 ioa_cfg->ioa_unit_checked = 0;
8684 ipr_get_unit_check_buffer(ioa_cfg);
8685 ipr_cmd->job_step = ipr_reset_alert;
8686 ipr_reset_start_timer(ipr_cmd, 0);
8687 return IPR_RC_JOB_RETURN;
8688 }
8689 }
8690
8691 if (ioa_cfg->in_ioa_bringdown) {
8692 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8693 } else if (ioa_cfg->sdt_state == GET_DUMP) {
8694 ipr_cmd->job_step = ipr_dump_mailbox_wait;
8695 ipr_cmd->u.time_left = IPR_WAIT_FOR_MAILBOX;
8696 } else {
8697 ipr_cmd->job_step = ipr_reset_enable_ioa;
8698 }
8699
8700 LEAVE;
8701 return IPR_RC_JOB_CONTINUE;
8702 }
8703
8704 /**
8705 * ipr_reset_bist_done - BIST has completed on the adapter.
8706 * @ipr_cmd: ipr command struct
8707 *
8708 * Description: Unblock config space and resume the reset process.
8709 *
8710 * Return value:
8711 * IPR_RC_JOB_CONTINUE
8712 **/
ipr_reset_bist_done(struct ipr_cmnd * ipr_cmd)8713 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8714 {
8715 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8716
8717 ENTER;
8718 if (ioa_cfg->cfg_locked)
8719 pci_cfg_access_unlock(ioa_cfg->pdev);
8720 ioa_cfg->cfg_locked = 0;
8721 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8722 LEAVE;
8723 return IPR_RC_JOB_CONTINUE;
8724 }
8725
8726 /**
8727 * ipr_reset_start_bist - Run BIST on the adapter.
8728 * @ipr_cmd: ipr command struct
8729 *
8730 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8731 *
8732 * Return value:
8733 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8734 **/
ipr_reset_start_bist(struct ipr_cmnd * ipr_cmd)8735 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8736 {
8737 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8738 int rc = PCIBIOS_SUCCESSFUL;
8739
8740 ENTER;
8741 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8742 writel(IPR_UPROCI_SIS64_START_BIST,
8743 ioa_cfg->regs.set_uproc_interrupt_reg32);
8744 else
8745 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8746
8747 if (rc == PCIBIOS_SUCCESSFUL) {
8748 ipr_cmd->job_step = ipr_reset_bist_done;
8749 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8750 rc = IPR_RC_JOB_RETURN;
8751 } else {
8752 if (ioa_cfg->cfg_locked)
8753 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8754 ioa_cfg->cfg_locked = 0;
8755 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8756 rc = IPR_RC_JOB_CONTINUE;
8757 }
8758
8759 LEAVE;
8760 return rc;
8761 }
8762
8763 /**
8764 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8765 * @ipr_cmd: ipr command struct
8766 *
8767 * Description: This clears PCI reset to the adapter and delays two seconds.
8768 *
8769 * Return value:
8770 * IPR_RC_JOB_RETURN
8771 **/
ipr_reset_slot_reset_done(struct ipr_cmnd * ipr_cmd)8772 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8773 {
8774 ENTER;
8775 ipr_cmd->job_step = ipr_reset_bist_done;
8776 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8777 LEAVE;
8778 return IPR_RC_JOB_RETURN;
8779 }
8780
8781 /**
8782 * ipr_reset_reset_work - Pulse a PCIe fundamental reset
8783 * @work: work struct
8784 *
8785 * Description: This pulses warm reset to a slot.
8786 *
8787 **/
ipr_reset_reset_work(struct work_struct * work)8788 static void ipr_reset_reset_work(struct work_struct *work)
8789 {
8790 struct ipr_cmnd *ipr_cmd = container_of(work, struct ipr_cmnd, work);
8791 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8792 struct pci_dev *pdev = ioa_cfg->pdev;
8793 unsigned long lock_flags = 0;
8794
8795 ENTER;
8796 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8797 msleep(jiffies_to_msecs(IPR_PCI_RESET_TIMEOUT));
8798 pci_set_pcie_reset_state(pdev, pcie_deassert_reset);
8799
8800 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
8801 if (ioa_cfg->reset_cmd == ipr_cmd)
8802 ipr_reset_ioa_job(ipr_cmd);
8803 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
8804 LEAVE;
8805 }
8806
8807 /**
8808 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8809 * @ipr_cmd: ipr command struct
8810 *
8811 * Description: This asserts PCI reset to the adapter.
8812 *
8813 * Return value:
8814 * IPR_RC_JOB_RETURN
8815 **/
ipr_reset_slot_reset(struct ipr_cmnd * ipr_cmd)8816 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8817 {
8818 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8819
8820 ENTER;
8821 INIT_WORK(&ipr_cmd->work, ipr_reset_reset_work);
8822 queue_work(ioa_cfg->reset_work_q, &ipr_cmd->work);
8823 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8824 LEAVE;
8825 return IPR_RC_JOB_RETURN;
8826 }
8827
8828 /**
8829 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8830 * @ipr_cmd: ipr command struct
8831 *
8832 * Description: This attempts to block config access to the IOA.
8833 *
8834 * Return value:
8835 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8836 **/
ipr_reset_block_config_access_wait(struct ipr_cmnd * ipr_cmd)8837 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8838 {
8839 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8840 int rc = IPR_RC_JOB_CONTINUE;
8841
8842 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8843 ioa_cfg->cfg_locked = 1;
8844 ipr_cmd->job_step = ioa_cfg->reset;
8845 } else {
8846 if (ipr_cmd->u.time_left) {
8847 rc = IPR_RC_JOB_RETURN;
8848 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8849 ipr_reset_start_timer(ipr_cmd,
8850 IPR_CHECK_FOR_RESET_TIMEOUT);
8851 } else {
8852 ipr_cmd->job_step = ioa_cfg->reset;
8853 dev_err(&ioa_cfg->pdev->dev,
8854 "Timed out waiting to lock config access. Resetting anyway.\n");
8855 }
8856 }
8857
8858 return rc;
8859 }
8860
8861 /**
8862 * ipr_reset_block_config_access - Block config access to the IOA
8863 * @ipr_cmd: ipr command struct
8864 *
8865 * Description: This attempts to block config access to the IOA
8866 *
8867 * Return value:
8868 * IPR_RC_JOB_CONTINUE
8869 **/
ipr_reset_block_config_access(struct ipr_cmnd * ipr_cmd)8870 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8871 {
8872 ipr_cmd->ioa_cfg->cfg_locked = 0;
8873 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8874 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8875 return IPR_RC_JOB_CONTINUE;
8876 }
8877
8878 /**
8879 * ipr_reset_allowed - Query whether or not IOA can be reset
8880 * @ioa_cfg: ioa config struct
8881 *
8882 * Return value:
8883 * 0 if reset not allowed / non-zero if reset is allowed
8884 **/
ipr_reset_allowed(struct ipr_ioa_cfg * ioa_cfg)8885 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8886 {
8887 volatile u32 temp_reg;
8888
8889 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8890 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8891 }
8892
8893 /**
8894 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8895 * @ipr_cmd: ipr command struct
8896 *
8897 * Description: This function waits for adapter permission to run BIST,
8898 * then runs BIST. If the adapter does not give permission after a
8899 * reasonable time, we will reset the adapter anyway. The impact of
8900 * resetting the adapter without warning the adapter is the risk of
8901 * losing the persistent error log on the adapter. If the adapter is
8902 * reset while it is writing to the flash on the adapter, the flash
8903 * segment will have bad ECC and be zeroed.
8904 *
8905 * Return value:
8906 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8907 **/
ipr_reset_wait_to_start_bist(struct ipr_cmnd * ipr_cmd)8908 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8909 {
8910 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8911 int rc = IPR_RC_JOB_RETURN;
8912
8913 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8914 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8915 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8916 } else {
8917 ipr_cmd->job_step = ipr_reset_block_config_access;
8918 rc = IPR_RC_JOB_CONTINUE;
8919 }
8920
8921 return rc;
8922 }
8923
8924 /**
8925 * ipr_reset_alert - Alert the adapter of a pending reset
8926 * @ipr_cmd: ipr command struct
8927 *
8928 * Description: This function alerts the adapter that it will be reset.
8929 * If memory space is not currently enabled, proceed directly
8930 * to running BIST on the adapter. The timer must always be started
8931 * so we guarantee we do not run BIST from ipr_isr.
8932 *
8933 * Return value:
8934 * IPR_RC_JOB_RETURN
8935 **/
ipr_reset_alert(struct ipr_cmnd * ipr_cmd)8936 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8937 {
8938 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8939 u16 cmd_reg;
8940 int rc;
8941
8942 ENTER;
8943 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8944
8945 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8946 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8947 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8948 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8949 } else {
8950 ipr_cmd->job_step = ipr_reset_block_config_access;
8951 }
8952
8953 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8954 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8955
8956 LEAVE;
8957 return IPR_RC_JOB_RETURN;
8958 }
8959
8960 /**
8961 * ipr_reset_quiesce_done - Complete IOA disconnect
8962 * @ipr_cmd: ipr command struct
8963 *
8964 * Description: Freeze the adapter to complete quiesce processing
8965 *
8966 * Return value:
8967 * IPR_RC_JOB_CONTINUE
8968 **/
ipr_reset_quiesce_done(struct ipr_cmnd * ipr_cmd)8969 static int ipr_reset_quiesce_done(struct ipr_cmnd *ipr_cmd)
8970 {
8971 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8972
8973 ENTER;
8974 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8975 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
8976 LEAVE;
8977 return IPR_RC_JOB_CONTINUE;
8978 }
8979
8980 /**
8981 * ipr_reset_cancel_hcam_done - Check for outstanding commands
8982 * @ipr_cmd: ipr command struct
8983 *
8984 * Description: Ensure nothing is outstanding to the IOA and
8985 * proceed with IOA disconnect. Otherwise reset the IOA.
8986 *
8987 * Return value:
8988 * IPR_RC_JOB_RETURN / IPR_RC_JOB_CONTINUE
8989 **/
ipr_reset_cancel_hcam_done(struct ipr_cmnd * ipr_cmd)8990 static int ipr_reset_cancel_hcam_done(struct ipr_cmnd *ipr_cmd)
8991 {
8992 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8993 struct ipr_cmnd *loop_cmd;
8994 struct ipr_hrr_queue *hrrq;
8995 int rc = IPR_RC_JOB_CONTINUE;
8996 int count = 0;
8997
8998 ENTER;
8999 ipr_cmd->job_step = ipr_reset_quiesce_done;
9000
9001 for_each_hrrq(hrrq, ioa_cfg) {
9002 spin_lock(&hrrq->_lock);
9003 list_for_each_entry(loop_cmd, &hrrq->hrrq_pending_q, queue) {
9004 count++;
9005 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9006 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9007 rc = IPR_RC_JOB_RETURN;
9008 break;
9009 }
9010 spin_unlock(&hrrq->_lock);
9011
9012 if (count)
9013 break;
9014 }
9015
9016 LEAVE;
9017 return rc;
9018 }
9019
9020 /**
9021 * ipr_reset_cancel_hcam - Cancel outstanding HCAMs
9022 * @ipr_cmd: ipr command struct
9023 *
9024 * Description: Cancel any oustanding HCAMs to the IOA.
9025 *
9026 * Return value:
9027 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9028 **/
ipr_reset_cancel_hcam(struct ipr_cmnd * ipr_cmd)9029 static int ipr_reset_cancel_hcam(struct ipr_cmnd *ipr_cmd)
9030 {
9031 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9032 int rc = IPR_RC_JOB_CONTINUE;
9033 struct ipr_cmd_pkt *cmd_pkt;
9034 struct ipr_cmnd *hcam_cmd;
9035 struct ipr_hrr_queue *hrrq = &ioa_cfg->hrrq[IPR_INIT_HRRQ];
9036
9037 ENTER;
9038 ipr_cmd->job_step = ipr_reset_cancel_hcam_done;
9039
9040 if (!hrrq->ioa_is_dead) {
9041 if (!list_empty(&ioa_cfg->hostrcb_pending_q)) {
9042 list_for_each_entry(hcam_cmd, &hrrq->hrrq_pending_q, queue) {
9043 if (hcam_cmd->ioarcb.cmd_pkt.cdb[0] != IPR_HOST_CONTROLLED_ASYNC)
9044 continue;
9045
9046 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9047 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9048 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
9049 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
9050 cmd_pkt->cdb[0] = IPR_CANCEL_REQUEST;
9051 cmd_pkt->cdb[1] = IPR_CANCEL_64BIT_IOARCB;
9052 cmd_pkt->cdb[10] = ((u64) hcam_cmd->dma_addr >> 56) & 0xff;
9053 cmd_pkt->cdb[11] = ((u64) hcam_cmd->dma_addr >> 48) & 0xff;
9054 cmd_pkt->cdb[12] = ((u64) hcam_cmd->dma_addr >> 40) & 0xff;
9055 cmd_pkt->cdb[13] = ((u64) hcam_cmd->dma_addr >> 32) & 0xff;
9056 cmd_pkt->cdb[2] = ((u64) hcam_cmd->dma_addr >> 24) & 0xff;
9057 cmd_pkt->cdb[3] = ((u64) hcam_cmd->dma_addr >> 16) & 0xff;
9058 cmd_pkt->cdb[4] = ((u64) hcam_cmd->dma_addr >> 8) & 0xff;
9059 cmd_pkt->cdb[5] = ((u64) hcam_cmd->dma_addr) & 0xff;
9060
9061 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
9062 IPR_CANCEL_TIMEOUT);
9063
9064 rc = IPR_RC_JOB_RETURN;
9065 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9066 break;
9067 }
9068 }
9069 } else
9070 ipr_cmd->job_step = ipr_reset_alert;
9071
9072 LEAVE;
9073 return rc;
9074 }
9075
9076 /**
9077 * ipr_reset_ucode_download_done - Microcode download completion
9078 * @ipr_cmd: ipr command struct
9079 *
9080 * Description: This function unmaps the microcode download buffer.
9081 *
9082 * Return value:
9083 * IPR_RC_JOB_CONTINUE
9084 **/
ipr_reset_ucode_download_done(struct ipr_cmnd * ipr_cmd)9085 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
9086 {
9087 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9088 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
9089
9090 dma_unmap_sg(&ioa_cfg->pdev->dev, sglist->scatterlist,
9091 sglist->num_sg, DMA_TO_DEVICE);
9092
9093 ipr_cmd->job_step = ipr_reset_alert;
9094 return IPR_RC_JOB_CONTINUE;
9095 }
9096
9097 /**
9098 * ipr_reset_ucode_download - Download microcode to the adapter
9099 * @ipr_cmd: ipr command struct
9100 *
9101 * Description: This function checks to see if it there is microcode
9102 * to download to the adapter. If there is, a download is performed.
9103 *
9104 * Return value:
9105 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9106 **/
ipr_reset_ucode_download(struct ipr_cmnd * ipr_cmd)9107 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
9108 {
9109 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9110 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
9111
9112 ENTER;
9113 ipr_cmd->job_step = ipr_reset_alert;
9114
9115 if (!sglist)
9116 return IPR_RC_JOB_CONTINUE;
9117
9118 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9119 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
9120 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
9121 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
9122 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
9123 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
9124 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
9125
9126 if (ioa_cfg->sis64)
9127 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
9128 else
9129 ipr_build_ucode_ioadl(ipr_cmd, sglist);
9130 ipr_cmd->job_step = ipr_reset_ucode_download_done;
9131
9132 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
9133 IPR_WRITE_BUFFER_TIMEOUT);
9134
9135 LEAVE;
9136 return IPR_RC_JOB_RETURN;
9137 }
9138
9139 /**
9140 * ipr_reset_shutdown_ioa - Shutdown the adapter
9141 * @ipr_cmd: ipr command struct
9142 *
9143 * Description: This function issues an adapter shutdown of the
9144 * specified type to the specified adapter as part of the
9145 * adapter reset job.
9146 *
9147 * Return value:
9148 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
9149 **/
ipr_reset_shutdown_ioa(struct ipr_cmnd * ipr_cmd)9150 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
9151 {
9152 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9153 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
9154 unsigned long timeout;
9155 int rc = IPR_RC_JOB_CONTINUE;
9156
9157 ENTER;
9158 if (shutdown_type == IPR_SHUTDOWN_QUIESCE)
9159 ipr_cmd->job_step = ipr_reset_cancel_hcam;
9160 else if (shutdown_type != IPR_SHUTDOWN_NONE &&
9161 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
9162 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
9163 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
9164 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
9165 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
9166
9167 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
9168 timeout = IPR_SHUTDOWN_TIMEOUT;
9169 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
9170 timeout = IPR_INTERNAL_TIMEOUT;
9171 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
9172 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
9173 else
9174 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
9175
9176 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
9177
9178 rc = IPR_RC_JOB_RETURN;
9179 ipr_cmd->job_step = ipr_reset_ucode_download;
9180 } else
9181 ipr_cmd->job_step = ipr_reset_alert;
9182
9183 LEAVE;
9184 return rc;
9185 }
9186
9187 /**
9188 * ipr_reset_ioa_job - Adapter reset job
9189 * @ipr_cmd: ipr command struct
9190 *
9191 * Description: This function is the job router for the adapter reset job.
9192 *
9193 * Return value:
9194 * none
9195 **/
ipr_reset_ioa_job(struct ipr_cmnd * ipr_cmd)9196 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
9197 {
9198 u32 rc, ioasc;
9199 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9200
9201 do {
9202 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
9203
9204 if (ioa_cfg->reset_cmd != ipr_cmd) {
9205 /*
9206 * We are doing nested adapter resets and this is
9207 * not the current reset job.
9208 */
9209 list_add_tail(&ipr_cmd->queue,
9210 &ipr_cmd->hrrq->hrrq_free_q);
9211 return;
9212 }
9213
9214 if (IPR_IOASC_SENSE_KEY(ioasc)) {
9215 rc = ipr_cmd->job_step_failed(ipr_cmd);
9216 if (rc == IPR_RC_JOB_RETURN)
9217 return;
9218 }
9219
9220 ipr_reinit_ipr_cmnd(ipr_cmd);
9221 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
9222 rc = ipr_cmd->job_step(ipr_cmd);
9223 } while (rc == IPR_RC_JOB_CONTINUE);
9224 }
9225
9226 /**
9227 * _ipr_initiate_ioa_reset - Initiate an adapter reset
9228 * @ioa_cfg: ioa config struct
9229 * @job_step: first job step of reset job
9230 * @shutdown_type: shutdown type
9231 *
9232 * Description: This function will initiate the reset of the given adapter
9233 * starting at the selected job step.
9234 * If the caller needs to wait on the completion of the reset,
9235 * the caller must sleep on the reset_wait_q.
9236 *
9237 * Return value:
9238 * none
9239 **/
_ipr_initiate_ioa_reset(struct ipr_ioa_cfg * ioa_cfg,int (* job_step)(struct ipr_cmnd *),enum ipr_shutdown_type shutdown_type)9240 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9241 int (*job_step) (struct ipr_cmnd *),
9242 enum ipr_shutdown_type shutdown_type)
9243 {
9244 struct ipr_cmnd *ipr_cmd;
9245 int i;
9246
9247 ioa_cfg->in_reset_reload = 1;
9248 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9249 spin_lock(&ioa_cfg->hrrq[i]._lock);
9250 ioa_cfg->hrrq[i].allow_cmds = 0;
9251 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9252 }
9253 wmb();
9254 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9255 ioa_cfg->scsi_unblock = 0;
9256 ioa_cfg->scsi_blocked = 1;
9257 scsi_block_requests(ioa_cfg->host);
9258 }
9259
9260 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
9261 ioa_cfg->reset_cmd = ipr_cmd;
9262 ipr_cmd->job_step = job_step;
9263 ipr_cmd->u.shutdown_type = shutdown_type;
9264
9265 ipr_reset_ioa_job(ipr_cmd);
9266 }
9267
9268 /**
9269 * ipr_initiate_ioa_reset - Initiate an adapter reset
9270 * @ioa_cfg: ioa config struct
9271 * @shutdown_type: shutdown type
9272 *
9273 * Description: This function will initiate the reset of the given adapter.
9274 * If the caller needs to wait on the completion of the reset,
9275 * the caller must sleep on the reset_wait_q.
9276 *
9277 * Return value:
9278 * none
9279 **/
ipr_initiate_ioa_reset(struct ipr_ioa_cfg * ioa_cfg,enum ipr_shutdown_type shutdown_type)9280 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
9281 enum ipr_shutdown_type shutdown_type)
9282 {
9283 int i;
9284
9285 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
9286 return;
9287
9288 if (ioa_cfg->in_reset_reload) {
9289 if (ioa_cfg->sdt_state == GET_DUMP)
9290 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9291 else if (ioa_cfg->sdt_state == READ_DUMP)
9292 ioa_cfg->sdt_state = ABORT_DUMP;
9293 }
9294
9295 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
9296 dev_err(&ioa_cfg->pdev->dev,
9297 "IOA taken offline - error recovery failed\n");
9298
9299 ioa_cfg->reset_retries = 0;
9300 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9301 spin_lock(&ioa_cfg->hrrq[i]._lock);
9302 ioa_cfg->hrrq[i].ioa_is_dead = 1;
9303 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9304 }
9305 wmb();
9306
9307 if (ioa_cfg->in_ioa_bringdown) {
9308 ioa_cfg->reset_cmd = NULL;
9309 ioa_cfg->in_reset_reload = 0;
9310 ipr_fail_all_ops(ioa_cfg);
9311 wake_up_all(&ioa_cfg->reset_wait_q);
9312
9313 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
9314 ioa_cfg->scsi_unblock = 1;
9315 schedule_work(&ioa_cfg->work_q);
9316 }
9317 return;
9318 } else {
9319 ioa_cfg->in_ioa_bringdown = 1;
9320 shutdown_type = IPR_SHUTDOWN_NONE;
9321 }
9322 }
9323
9324 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
9325 shutdown_type);
9326 }
9327
9328 /**
9329 * ipr_reset_freeze - Hold off all I/O activity
9330 * @ipr_cmd: ipr command struct
9331 *
9332 * Description: If the PCI slot is frozen, hold off all I/O
9333 * activity; then, as soon as the slot is available again,
9334 * initiate an adapter reset.
9335 */
ipr_reset_freeze(struct ipr_cmnd * ipr_cmd)9336 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
9337 {
9338 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
9339 int i;
9340
9341 /* Disallow new interrupts, avoid loop */
9342 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9343 spin_lock(&ioa_cfg->hrrq[i]._lock);
9344 ioa_cfg->hrrq[i].allow_interrupts = 0;
9345 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9346 }
9347 wmb();
9348 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
9349 ipr_cmd->done = ipr_reset_ioa_job;
9350 return IPR_RC_JOB_RETURN;
9351 }
9352
9353 /**
9354 * ipr_pci_mmio_enabled - Called when MMIO has been re-enabled
9355 * @pdev: PCI device struct
9356 *
9357 * Description: This routine is called to tell us that the MMIO
9358 * access to the IOA has been restored
9359 */
ipr_pci_mmio_enabled(struct pci_dev * pdev)9360 static pci_ers_result_t ipr_pci_mmio_enabled(struct pci_dev *pdev)
9361 {
9362 unsigned long flags = 0;
9363 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9364
9365 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9366 if (!ioa_cfg->probe_done)
9367 pci_save_state(pdev);
9368 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9369 return PCI_ERS_RESULT_NEED_RESET;
9370 }
9371
9372 /**
9373 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
9374 * @pdev: PCI device struct
9375 *
9376 * Description: This routine is called to tell us that the PCI bus
9377 * is down. Can't do anything here, except put the device driver
9378 * into a holding pattern, waiting for the PCI bus to come back.
9379 */
ipr_pci_frozen(struct pci_dev * pdev)9380 static void ipr_pci_frozen(struct pci_dev *pdev)
9381 {
9382 unsigned long flags = 0;
9383 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9384
9385 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9386 if (ioa_cfg->probe_done)
9387 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
9388 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9389 }
9390
9391 /**
9392 * ipr_pci_slot_reset - Called when PCI slot has been reset.
9393 * @pdev: PCI device struct
9394 *
9395 * Description: This routine is called by the pci error recovery
9396 * code after the PCI slot has been reset, just before we
9397 * should resume normal operations.
9398 */
ipr_pci_slot_reset(struct pci_dev * pdev)9399 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
9400 {
9401 unsigned long flags = 0;
9402 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9403
9404 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9405 if (ioa_cfg->probe_done) {
9406 if (ioa_cfg->needs_warm_reset)
9407 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9408 else
9409 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
9410 IPR_SHUTDOWN_NONE);
9411 } else
9412 wake_up_all(&ioa_cfg->eeh_wait_q);
9413 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9414 return PCI_ERS_RESULT_RECOVERED;
9415 }
9416
9417 /**
9418 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
9419 * @pdev: PCI device struct
9420 *
9421 * Description: This routine is called when the PCI bus has
9422 * permanently failed.
9423 */
ipr_pci_perm_failure(struct pci_dev * pdev)9424 static void ipr_pci_perm_failure(struct pci_dev *pdev)
9425 {
9426 unsigned long flags = 0;
9427 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9428 int i;
9429
9430 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
9431 if (ioa_cfg->probe_done) {
9432 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9433 ioa_cfg->sdt_state = ABORT_DUMP;
9434 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES - 1;
9435 ioa_cfg->in_ioa_bringdown = 1;
9436 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9437 spin_lock(&ioa_cfg->hrrq[i]._lock);
9438 ioa_cfg->hrrq[i].allow_cmds = 0;
9439 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9440 }
9441 wmb();
9442 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9443 } else
9444 wake_up_all(&ioa_cfg->eeh_wait_q);
9445 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
9446 }
9447
9448 /**
9449 * ipr_pci_error_detected - Called when a PCI error is detected.
9450 * @pdev: PCI device struct
9451 * @state: PCI channel state
9452 *
9453 * Description: Called when a PCI error is detected.
9454 *
9455 * Return value:
9456 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
9457 */
ipr_pci_error_detected(struct pci_dev * pdev,pci_channel_state_t state)9458 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
9459 pci_channel_state_t state)
9460 {
9461 switch (state) {
9462 case pci_channel_io_frozen:
9463 ipr_pci_frozen(pdev);
9464 return PCI_ERS_RESULT_CAN_RECOVER;
9465 case pci_channel_io_perm_failure:
9466 ipr_pci_perm_failure(pdev);
9467 return PCI_ERS_RESULT_DISCONNECT;
9468 break;
9469 default:
9470 break;
9471 }
9472 return PCI_ERS_RESULT_NEED_RESET;
9473 }
9474
9475 /**
9476 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
9477 * @ioa_cfg: ioa cfg struct
9478 *
9479 * Description: This is the second phase of adapter initialization
9480 * This function takes care of initilizing the adapter to the point
9481 * where it can accept new commands.
9482
9483 * Return value:
9484 * 0 on success / -EIO on failure
9485 **/
ipr_probe_ioa_part2(struct ipr_ioa_cfg * ioa_cfg)9486 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
9487 {
9488 int rc = 0;
9489 unsigned long host_lock_flags = 0;
9490
9491 ENTER;
9492 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9493 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
9494 ioa_cfg->probe_done = 1;
9495 if (ioa_cfg->needs_hard_reset) {
9496 ioa_cfg->needs_hard_reset = 0;
9497 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
9498 } else
9499 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
9500 IPR_SHUTDOWN_NONE);
9501 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9502
9503 LEAVE;
9504 return rc;
9505 }
9506
9507 /**
9508 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
9509 * @ioa_cfg: ioa config struct
9510 *
9511 * Return value:
9512 * none
9513 **/
ipr_free_cmd_blks(struct ipr_ioa_cfg * ioa_cfg)9514 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9515 {
9516 int i;
9517
9518 if (ioa_cfg->ipr_cmnd_list) {
9519 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9520 if (ioa_cfg->ipr_cmnd_list[i])
9521 dma_pool_free(ioa_cfg->ipr_cmd_pool,
9522 ioa_cfg->ipr_cmnd_list[i],
9523 ioa_cfg->ipr_cmnd_list_dma[i]);
9524
9525 ioa_cfg->ipr_cmnd_list[i] = NULL;
9526 }
9527 }
9528
9529 if (ioa_cfg->ipr_cmd_pool)
9530 dma_pool_destroy(ioa_cfg->ipr_cmd_pool);
9531
9532 kfree(ioa_cfg->ipr_cmnd_list);
9533 kfree(ioa_cfg->ipr_cmnd_list_dma);
9534 ioa_cfg->ipr_cmnd_list = NULL;
9535 ioa_cfg->ipr_cmnd_list_dma = NULL;
9536 ioa_cfg->ipr_cmd_pool = NULL;
9537 }
9538
9539 /**
9540 * ipr_free_mem - Frees memory allocated for an adapter
9541 * @ioa_cfg: ioa cfg struct
9542 *
9543 * Return value:
9544 * nothing
9545 **/
ipr_free_mem(struct ipr_ioa_cfg * ioa_cfg)9546 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
9547 {
9548 int i;
9549
9550 kfree(ioa_cfg->res_entries);
9551 dma_free_coherent(&ioa_cfg->pdev->dev, sizeof(struct ipr_misc_cbs),
9552 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9553 ipr_free_cmd_blks(ioa_cfg);
9554
9555 for (i = 0; i < ioa_cfg->hrrq_num; i++)
9556 dma_free_coherent(&ioa_cfg->pdev->dev,
9557 sizeof(u32) * ioa_cfg->hrrq[i].size,
9558 ioa_cfg->hrrq[i].host_rrq,
9559 ioa_cfg->hrrq[i].host_rrq_dma);
9560
9561 dma_free_coherent(&ioa_cfg->pdev->dev, ioa_cfg->cfg_table_size,
9562 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9563
9564 for (i = 0; i < IPR_MAX_HCAMS; i++) {
9565 dma_free_coherent(&ioa_cfg->pdev->dev,
9566 sizeof(struct ipr_hostrcb),
9567 ioa_cfg->hostrcb[i],
9568 ioa_cfg->hostrcb_dma[i]);
9569 }
9570
9571 ipr_free_dump(ioa_cfg);
9572 kfree(ioa_cfg->trace);
9573 }
9574
9575 /**
9576 * ipr_free_irqs - Free all allocated IRQs for the adapter.
9577 * @ioa_cfg: ipr cfg struct
9578 *
9579 * This function frees all allocated IRQs for the
9580 * specified adapter.
9581 *
9582 * Return value:
9583 * none
9584 **/
ipr_free_irqs(struct ipr_ioa_cfg * ioa_cfg)9585 static void ipr_free_irqs(struct ipr_ioa_cfg *ioa_cfg)
9586 {
9587 struct pci_dev *pdev = ioa_cfg->pdev;
9588 int i;
9589
9590 for (i = 0; i < ioa_cfg->nvectors; i++)
9591 free_irq(pci_irq_vector(pdev, i), &ioa_cfg->hrrq[i]);
9592 pci_free_irq_vectors(pdev);
9593 }
9594
9595 /**
9596 * ipr_free_all_resources - Free all allocated resources for an adapter.
9597 * @ipr_cmd: ipr command struct
9598 *
9599 * This function frees all allocated resources for the
9600 * specified adapter.
9601 *
9602 * Return value:
9603 * none
9604 **/
ipr_free_all_resources(struct ipr_ioa_cfg * ioa_cfg)9605 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
9606 {
9607 struct pci_dev *pdev = ioa_cfg->pdev;
9608
9609 ENTER;
9610 ipr_free_irqs(ioa_cfg);
9611 if (ioa_cfg->reset_work_q)
9612 destroy_workqueue(ioa_cfg->reset_work_q);
9613 iounmap(ioa_cfg->hdw_dma_regs);
9614 pci_release_regions(pdev);
9615 ipr_free_mem(ioa_cfg);
9616 scsi_host_put(ioa_cfg->host);
9617 pci_disable_device(pdev);
9618 LEAVE;
9619 }
9620
9621 /**
9622 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
9623 * @ioa_cfg: ioa config struct
9624 *
9625 * Return value:
9626 * 0 on success / -ENOMEM on allocation failure
9627 **/
ipr_alloc_cmd_blks(struct ipr_ioa_cfg * ioa_cfg)9628 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
9629 {
9630 struct ipr_cmnd *ipr_cmd;
9631 struct ipr_ioarcb *ioarcb;
9632 dma_addr_t dma_addr;
9633 int i, entries_each_hrrq, hrrq_id = 0;
9634
9635 ioa_cfg->ipr_cmd_pool = dma_pool_create(IPR_NAME, &ioa_cfg->pdev->dev,
9636 sizeof(struct ipr_cmnd), 512, 0);
9637
9638 if (!ioa_cfg->ipr_cmd_pool)
9639 return -ENOMEM;
9640
9641 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
9642 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
9643
9644 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
9645 ipr_free_cmd_blks(ioa_cfg);
9646 return -ENOMEM;
9647 }
9648
9649 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9650 if (ioa_cfg->hrrq_num > 1) {
9651 if (i == 0) {
9652 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
9653 ioa_cfg->hrrq[i].min_cmd_id = 0;
9654 ioa_cfg->hrrq[i].max_cmd_id =
9655 (entries_each_hrrq - 1);
9656 } else {
9657 entries_each_hrrq =
9658 IPR_NUM_BASE_CMD_BLKS/
9659 (ioa_cfg->hrrq_num - 1);
9660 ioa_cfg->hrrq[i].min_cmd_id =
9661 IPR_NUM_INTERNAL_CMD_BLKS +
9662 (i - 1) * entries_each_hrrq;
9663 ioa_cfg->hrrq[i].max_cmd_id =
9664 (IPR_NUM_INTERNAL_CMD_BLKS +
9665 i * entries_each_hrrq - 1);
9666 }
9667 } else {
9668 entries_each_hrrq = IPR_NUM_CMD_BLKS;
9669 ioa_cfg->hrrq[i].min_cmd_id = 0;
9670 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
9671 }
9672 ioa_cfg->hrrq[i].size = entries_each_hrrq;
9673 }
9674
9675 BUG_ON(ioa_cfg->hrrq_num == 0);
9676
9677 i = IPR_NUM_CMD_BLKS -
9678 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
9679 if (i > 0) {
9680 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
9681 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
9682 }
9683
9684 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
9685 ipr_cmd = dma_pool_zalloc(ioa_cfg->ipr_cmd_pool,
9686 GFP_KERNEL, &dma_addr);
9687
9688 if (!ipr_cmd) {
9689 ipr_free_cmd_blks(ioa_cfg);
9690 return -ENOMEM;
9691 }
9692
9693 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
9694 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
9695
9696 ioarcb = &ipr_cmd->ioarcb;
9697 ipr_cmd->dma_addr = dma_addr;
9698 if (ioa_cfg->sis64)
9699 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
9700 else
9701 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
9702
9703 ioarcb->host_response_handle = cpu_to_be32(i << 2);
9704 if (ioa_cfg->sis64) {
9705 ioarcb->u.sis64_addr_data.data_ioadl_addr =
9706 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
9707 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
9708 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
9709 } else {
9710 ioarcb->write_ioadl_addr =
9711 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
9712 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
9713 ioarcb->ioasa_host_pci_addr =
9714 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
9715 }
9716 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
9717 ipr_cmd->cmd_index = i;
9718 ipr_cmd->ioa_cfg = ioa_cfg;
9719 ipr_cmd->sense_buffer_dma = dma_addr +
9720 offsetof(struct ipr_cmnd, sense_buffer);
9721
9722 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
9723 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
9724 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9725 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
9726 hrrq_id++;
9727 }
9728
9729 return 0;
9730 }
9731
9732 /**
9733 * ipr_alloc_mem - Allocate memory for an adapter
9734 * @ioa_cfg: ioa config struct
9735 *
9736 * Return value:
9737 * 0 on success / non-zero for error
9738 **/
ipr_alloc_mem(struct ipr_ioa_cfg * ioa_cfg)9739 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
9740 {
9741 struct pci_dev *pdev = ioa_cfg->pdev;
9742 int i, rc = -ENOMEM;
9743
9744 ENTER;
9745 ioa_cfg->res_entries = kcalloc(ioa_cfg->max_devs_supported,
9746 sizeof(struct ipr_resource_entry),
9747 GFP_KERNEL);
9748
9749 if (!ioa_cfg->res_entries)
9750 goto out;
9751
9752 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
9753 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
9754 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
9755 }
9756
9757 ioa_cfg->vpd_cbs = dma_alloc_coherent(&pdev->dev,
9758 sizeof(struct ipr_misc_cbs),
9759 &ioa_cfg->vpd_cbs_dma,
9760 GFP_KERNEL);
9761
9762 if (!ioa_cfg->vpd_cbs)
9763 goto out_free_res_entries;
9764
9765 if (ipr_alloc_cmd_blks(ioa_cfg))
9766 goto out_free_vpd_cbs;
9767
9768 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9769 ioa_cfg->hrrq[i].host_rrq = dma_alloc_coherent(&pdev->dev,
9770 sizeof(u32) * ioa_cfg->hrrq[i].size,
9771 &ioa_cfg->hrrq[i].host_rrq_dma,
9772 GFP_KERNEL);
9773
9774 if (!ioa_cfg->hrrq[i].host_rrq) {
9775 while (--i > 0)
9776 dma_free_coherent(&pdev->dev,
9777 sizeof(u32) * ioa_cfg->hrrq[i].size,
9778 ioa_cfg->hrrq[i].host_rrq,
9779 ioa_cfg->hrrq[i].host_rrq_dma);
9780 goto out_ipr_free_cmd_blocks;
9781 }
9782 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9783 }
9784
9785 ioa_cfg->u.cfg_table = dma_alloc_coherent(&pdev->dev,
9786 ioa_cfg->cfg_table_size,
9787 &ioa_cfg->cfg_table_dma,
9788 GFP_KERNEL);
9789
9790 if (!ioa_cfg->u.cfg_table)
9791 goto out_free_host_rrq;
9792
9793 for (i = 0; i < IPR_MAX_HCAMS; i++) {
9794 ioa_cfg->hostrcb[i] = dma_alloc_coherent(&pdev->dev,
9795 sizeof(struct ipr_hostrcb),
9796 &ioa_cfg->hostrcb_dma[i],
9797 GFP_KERNEL);
9798
9799 if (!ioa_cfg->hostrcb[i])
9800 goto out_free_hostrcb_dma;
9801
9802 ioa_cfg->hostrcb[i]->hostrcb_dma =
9803 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9804 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9805 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9806 }
9807
9808 ioa_cfg->trace = kcalloc(IPR_NUM_TRACE_ENTRIES,
9809 sizeof(struct ipr_trace_entry),
9810 GFP_KERNEL);
9811
9812 if (!ioa_cfg->trace)
9813 goto out_free_hostrcb_dma;
9814
9815 rc = 0;
9816 out:
9817 LEAVE;
9818 return rc;
9819
9820 out_free_hostrcb_dma:
9821 while (i-- > 0) {
9822 dma_free_coherent(&pdev->dev, sizeof(struct ipr_hostrcb),
9823 ioa_cfg->hostrcb[i],
9824 ioa_cfg->hostrcb_dma[i]);
9825 }
9826 dma_free_coherent(&pdev->dev, ioa_cfg->cfg_table_size,
9827 ioa_cfg->u.cfg_table, ioa_cfg->cfg_table_dma);
9828 out_free_host_rrq:
9829 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9830 dma_free_coherent(&pdev->dev,
9831 sizeof(u32) * ioa_cfg->hrrq[i].size,
9832 ioa_cfg->hrrq[i].host_rrq,
9833 ioa_cfg->hrrq[i].host_rrq_dma);
9834 }
9835 out_ipr_free_cmd_blocks:
9836 ipr_free_cmd_blks(ioa_cfg);
9837 out_free_vpd_cbs:
9838 dma_free_coherent(&pdev->dev, sizeof(struct ipr_misc_cbs),
9839 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9840 out_free_res_entries:
9841 kfree(ioa_cfg->res_entries);
9842 goto out;
9843 }
9844
9845 /**
9846 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9847 * @ioa_cfg: ioa config struct
9848 *
9849 * Return value:
9850 * none
9851 **/
ipr_initialize_bus_attr(struct ipr_ioa_cfg * ioa_cfg)9852 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9853 {
9854 int i;
9855
9856 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9857 ioa_cfg->bus_attr[i].bus = i;
9858 ioa_cfg->bus_attr[i].qas_enabled = 0;
9859 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9860 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9861 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9862 else
9863 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9864 }
9865 }
9866
9867 /**
9868 * ipr_init_regs - Initialize IOA registers
9869 * @ioa_cfg: ioa config struct
9870 *
9871 * Return value:
9872 * none
9873 **/
ipr_init_regs(struct ipr_ioa_cfg * ioa_cfg)9874 static void ipr_init_regs(struct ipr_ioa_cfg *ioa_cfg)
9875 {
9876 const struct ipr_interrupt_offsets *p;
9877 struct ipr_interrupts *t;
9878 void __iomem *base;
9879
9880 p = &ioa_cfg->chip_cfg->regs;
9881 t = &ioa_cfg->regs;
9882 base = ioa_cfg->hdw_dma_regs;
9883
9884 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9885 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9886 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9887 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9888 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9889 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9890 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9891 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9892 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9893 t->ioarrin_reg = base + p->ioarrin_reg;
9894 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9895 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9896 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9897 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9898 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9899 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9900
9901 if (ioa_cfg->sis64) {
9902 t->init_feedback_reg = base + p->init_feedback_reg;
9903 t->dump_addr_reg = base + p->dump_addr_reg;
9904 t->dump_data_reg = base + p->dump_data_reg;
9905 t->endian_swap_reg = base + p->endian_swap_reg;
9906 }
9907 }
9908
9909 /**
9910 * ipr_init_ioa_cfg - Initialize IOA config struct
9911 * @ioa_cfg: ioa config struct
9912 * @host: scsi host struct
9913 * @pdev: PCI dev struct
9914 *
9915 * Return value:
9916 * none
9917 **/
ipr_init_ioa_cfg(struct ipr_ioa_cfg * ioa_cfg,struct Scsi_Host * host,struct pci_dev * pdev)9918 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9919 struct Scsi_Host *host, struct pci_dev *pdev)
9920 {
9921 int i;
9922
9923 ioa_cfg->host = host;
9924 ioa_cfg->pdev = pdev;
9925 ioa_cfg->log_level = ipr_log_level;
9926 ioa_cfg->doorbell = IPR_DOORBELL;
9927 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9928 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9929 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9930 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9931 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9932 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9933
9934 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9935 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9936 INIT_LIST_HEAD(&ioa_cfg->hostrcb_report_q);
9937 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9938 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9939 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9940 INIT_WORK(&ioa_cfg->scsi_add_work_q, ipr_add_remove_thread);
9941 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9942 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9943 init_waitqueue_head(&ioa_cfg->eeh_wait_q);
9944 ioa_cfg->sdt_state = INACTIVE;
9945
9946 ipr_initialize_bus_attr(ioa_cfg);
9947 ioa_cfg->max_devs_supported = ipr_max_devs;
9948
9949 if (ioa_cfg->sis64) {
9950 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9951 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9952 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9953 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9954 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9955 + ((sizeof(struct ipr_config_table_entry64)
9956 * ioa_cfg->max_devs_supported)));
9957 } else {
9958 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9959 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9960 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9961 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9962 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9963 + ((sizeof(struct ipr_config_table_entry)
9964 * ioa_cfg->max_devs_supported)));
9965 }
9966
9967 host->max_channel = IPR_VSET_BUS;
9968 host->unique_id = host->host_no;
9969 host->max_cmd_len = IPR_MAX_CDB_LEN;
9970 host->can_queue = ioa_cfg->max_cmds;
9971 pci_set_drvdata(pdev, ioa_cfg);
9972
9973 for (i = 0; i < ARRAY_SIZE(ioa_cfg->hrrq); i++) {
9974 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9975 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9976 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9977 if (i == 0)
9978 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9979 else
9980 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9981 }
9982 }
9983
9984 /**
9985 * ipr_get_chip_info - Find adapter chip information
9986 * @dev_id: PCI device id struct
9987 *
9988 * Return value:
9989 * ptr to chip information on success / NULL on failure
9990 **/
9991 static const struct ipr_chip_t *
ipr_get_chip_info(const struct pci_device_id * dev_id)9992 ipr_get_chip_info(const struct pci_device_id *dev_id)
9993 {
9994 int i;
9995
9996 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9997 if (ipr_chip[i].vendor == dev_id->vendor &&
9998 ipr_chip[i].device == dev_id->device)
9999 return &ipr_chip[i];
10000 return NULL;
10001 }
10002
10003 /**
10004 * ipr_wait_for_pci_err_recovery - Wait for any PCI error recovery to complete
10005 * during probe time
10006 * @ioa_cfg: ioa config struct
10007 *
10008 * Return value:
10009 * None
10010 **/
ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg * ioa_cfg)10011 static void ipr_wait_for_pci_err_recovery(struct ipr_ioa_cfg *ioa_cfg)
10012 {
10013 struct pci_dev *pdev = ioa_cfg->pdev;
10014
10015 if (pci_channel_offline(pdev)) {
10016 wait_event_timeout(ioa_cfg->eeh_wait_q,
10017 !pci_channel_offline(pdev),
10018 IPR_PCI_ERROR_RECOVERY_TIMEOUT);
10019 pci_restore_state(pdev);
10020 }
10021 }
10022
name_msi_vectors(struct ipr_ioa_cfg * ioa_cfg)10023 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
10024 {
10025 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
10026
10027 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
10028 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
10029 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
10030 ioa_cfg->vectors_info[vec_idx].
10031 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
10032 }
10033 }
10034
ipr_request_other_msi_irqs(struct ipr_ioa_cfg * ioa_cfg,struct pci_dev * pdev)10035 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg,
10036 struct pci_dev *pdev)
10037 {
10038 int i, rc;
10039
10040 for (i = 1; i < ioa_cfg->nvectors; i++) {
10041 rc = request_irq(pci_irq_vector(pdev, i),
10042 ipr_isr_mhrrq,
10043 0,
10044 ioa_cfg->vectors_info[i].desc,
10045 &ioa_cfg->hrrq[i]);
10046 if (rc) {
10047 while (--i >= 0)
10048 free_irq(pci_irq_vector(pdev, i),
10049 &ioa_cfg->hrrq[i]);
10050 return rc;
10051 }
10052 }
10053 return 0;
10054 }
10055
10056 /**
10057 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
10058 * @pdev: PCI device struct
10059 *
10060 * Description: Simply set the msi_received flag to 1 indicating that
10061 * Message Signaled Interrupts are supported.
10062 *
10063 * Return value:
10064 * 0 on success / non-zero on failure
10065 **/
ipr_test_intr(int irq,void * devp)10066 static irqreturn_t ipr_test_intr(int irq, void *devp)
10067 {
10068 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
10069 unsigned long lock_flags = 0;
10070 irqreturn_t rc = IRQ_HANDLED;
10071
10072 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
10073 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10074
10075 ioa_cfg->msi_received = 1;
10076 wake_up(&ioa_cfg->msi_wait_q);
10077
10078 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10079 return rc;
10080 }
10081
10082 /**
10083 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
10084 * @pdev: PCI device struct
10085 *
10086 * Description: This routine sets up and initiates a test interrupt to determine
10087 * if the interrupt is received via the ipr_test_intr() service routine.
10088 * If the tests fails, the driver will fall back to LSI.
10089 *
10090 * Return value:
10091 * 0 on success / non-zero on failure
10092 **/
ipr_test_msi(struct ipr_ioa_cfg * ioa_cfg,struct pci_dev * pdev)10093 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
10094 {
10095 int rc;
10096 volatile u32 int_reg;
10097 unsigned long lock_flags = 0;
10098 int irq = pci_irq_vector(pdev, 0);
10099
10100 ENTER;
10101
10102 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10103 init_waitqueue_head(&ioa_cfg->msi_wait_q);
10104 ioa_cfg->msi_received = 0;
10105 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10106 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
10107 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
10108 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10109
10110 rc = request_irq(irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
10111 if (rc) {
10112 dev_err(&pdev->dev, "Can not assign irq %d\n", irq);
10113 return rc;
10114 } else if (ipr_debug)
10115 dev_info(&pdev->dev, "IRQ assigned: %d\n", irq);
10116
10117 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
10118 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
10119 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
10120 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10121 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10122
10123 if (!ioa_cfg->msi_received) {
10124 /* MSI test failed */
10125 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
10126 rc = -EOPNOTSUPP;
10127 } else if (ipr_debug)
10128 dev_info(&pdev->dev, "MSI test succeeded.\n");
10129
10130 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10131
10132 free_irq(irq, ioa_cfg);
10133
10134 LEAVE;
10135
10136 return rc;
10137 }
10138
10139 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
10140 * @pdev: PCI device struct
10141 * @dev_id: PCI device id struct
10142 *
10143 * Return value:
10144 * 0 on success / non-zero on failure
10145 **/
ipr_probe_ioa(struct pci_dev * pdev,const struct pci_device_id * dev_id)10146 static int ipr_probe_ioa(struct pci_dev *pdev,
10147 const struct pci_device_id *dev_id)
10148 {
10149 struct ipr_ioa_cfg *ioa_cfg;
10150 struct Scsi_Host *host;
10151 unsigned long ipr_regs_pci;
10152 void __iomem *ipr_regs;
10153 int rc = PCIBIOS_SUCCESSFUL;
10154 volatile u32 mask, uproc, interrupts;
10155 unsigned long lock_flags, driver_lock_flags;
10156 unsigned int irq_flag;
10157
10158 ENTER;
10159
10160 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
10161 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
10162
10163 if (!host) {
10164 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
10165 rc = -ENOMEM;
10166 goto out;
10167 }
10168
10169 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
10170 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
10171 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
10172
10173 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
10174
10175 if (!ioa_cfg->ipr_chip) {
10176 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
10177 dev_id->vendor, dev_id->device);
10178 goto out_scsi_host_put;
10179 }
10180
10181 /* set SIS 32 or SIS 64 */
10182 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
10183 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
10184 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
10185 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
10186
10187 if (ipr_transop_timeout)
10188 ioa_cfg->transop_timeout = ipr_transop_timeout;
10189 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
10190 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
10191 else
10192 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
10193
10194 ioa_cfg->revid = pdev->revision;
10195
10196 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
10197
10198 ipr_regs_pci = pci_resource_start(pdev, 0);
10199
10200 rc = pci_request_regions(pdev, IPR_NAME);
10201 if (rc < 0) {
10202 dev_err(&pdev->dev,
10203 "Couldn't register memory range of registers\n");
10204 goto out_scsi_host_put;
10205 }
10206
10207 rc = pci_enable_device(pdev);
10208
10209 if (rc || pci_channel_offline(pdev)) {
10210 if (pci_channel_offline(pdev)) {
10211 ipr_wait_for_pci_err_recovery(ioa_cfg);
10212 rc = pci_enable_device(pdev);
10213 }
10214
10215 if (rc) {
10216 dev_err(&pdev->dev, "Cannot enable adapter\n");
10217 ipr_wait_for_pci_err_recovery(ioa_cfg);
10218 goto out_release_regions;
10219 }
10220 }
10221
10222 ipr_regs = pci_ioremap_bar(pdev, 0);
10223
10224 if (!ipr_regs) {
10225 dev_err(&pdev->dev,
10226 "Couldn't map memory range of registers\n");
10227 rc = -ENOMEM;
10228 goto out_disable;
10229 }
10230
10231 ioa_cfg->hdw_dma_regs = ipr_regs;
10232 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
10233 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
10234
10235 ipr_init_regs(ioa_cfg);
10236
10237 if (ioa_cfg->sis64) {
10238 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
10239 if (rc < 0) {
10240 dev_dbg(&pdev->dev, "Failed to set 64 bit DMA mask\n");
10241 rc = dma_set_mask_and_coherent(&pdev->dev,
10242 DMA_BIT_MASK(32));
10243 }
10244 } else
10245 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
10246
10247 if (rc < 0) {
10248 dev_err(&pdev->dev, "Failed to set DMA mask\n");
10249 goto cleanup_nomem;
10250 }
10251
10252 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
10253 ioa_cfg->chip_cfg->cache_line_size);
10254
10255 if (rc != PCIBIOS_SUCCESSFUL) {
10256 dev_err(&pdev->dev, "Write of cache line size failed\n");
10257 ipr_wait_for_pci_err_recovery(ioa_cfg);
10258 rc = -EIO;
10259 goto cleanup_nomem;
10260 }
10261
10262 /* Issue MMIO read to ensure card is not in EEH */
10263 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg);
10264 ipr_wait_for_pci_err_recovery(ioa_cfg);
10265
10266 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
10267 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
10268 IPR_MAX_MSIX_VECTORS);
10269 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
10270 }
10271
10272 irq_flag = PCI_IRQ_LEGACY;
10273 if (ioa_cfg->ipr_chip->has_msi)
10274 irq_flag |= PCI_IRQ_MSI | PCI_IRQ_MSIX;
10275 rc = pci_alloc_irq_vectors(pdev, 1, ipr_number_of_msix, irq_flag);
10276 if (rc < 0) {
10277 ipr_wait_for_pci_err_recovery(ioa_cfg);
10278 goto cleanup_nomem;
10279 }
10280 ioa_cfg->nvectors = rc;
10281
10282 if (!pdev->msi_enabled && !pdev->msix_enabled)
10283 ioa_cfg->clear_isr = 1;
10284
10285 pci_set_master(pdev);
10286
10287 if (pci_channel_offline(pdev)) {
10288 ipr_wait_for_pci_err_recovery(ioa_cfg);
10289 pci_set_master(pdev);
10290 if (pci_channel_offline(pdev)) {
10291 rc = -EIO;
10292 goto out_msi_disable;
10293 }
10294 }
10295
10296 if (pdev->msi_enabled || pdev->msix_enabled) {
10297 rc = ipr_test_msi(ioa_cfg, pdev);
10298 switch (rc) {
10299 case 0:
10300 dev_info(&pdev->dev,
10301 "Request for %d MSI%ss succeeded.", ioa_cfg->nvectors,
10302 pdev->msix_enabled ? "-X" : "");
10303 break;
10304 case -EOPNOTSUPP:
10305 ipr_wait_for_pci_err_recovery(ioa_cfg);
10306 pci_free_irq_vectors(pdev);
10307
10308 ioa_cfg->nvectors = 1;
10309 ioa_cfg->clear_isr = 1;
10310 break;
10311 default:
10312 goto out_msi_disable;
10313 }
10314 }
10315
10316 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
10317 (unsigned int)num_online_cpus(),
10318 (unsigned int)IPR_MAX_HRRQ_NUM);
10319
10320 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
10321 goto out_msi_disable;
10322
10323 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
10324 goto out_msi_disable;
10325
10326 rc = ipr_alloc_mem(ioa_cfg);
10327 if (rc < 0) {
10328 dev_err(&pdev->dev,
10329 "Couldn't allocate enough memory for device driver!\n");
10330 goto out_msi_disable;
10331 }
10332
10333 /* Save away PCI config space for use following IOA reset */
10334 rc = pci_save_state(pdev);
10335
10336 if (rc != PCIBIOS_SUCCESSFUL) {
10337 dev_err(&pdev->dev, "Failed to save PCI config space\n");
10338 rc = -EIO;
10339 goto cleanup_nolog;
10340 }
10341
10342 /*
10343 * If HRRQ updated interrupt is not masked, or reset alert is set,
10344 * the card is in an unknown state and needs a hard reset
10345 */
10346 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
10347 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
10348 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
10349 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
10350 ioa_cfg->needs_hard_reset = 1;
10351 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
10352 ioa_cfg->needs_hard_reset = 1;
10353 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
10354 ioa_cfg->ioa_unit_checked = 1;
10355
10356 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10357 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
10358 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10359
10360 if (pdev->msi_enabled || pdev->msix_enabled) {
10361 name_msi_vectors(ioa_cfg);
10362 rc = request_irq(pci_irq_vector(pdev, 0), ipr_isr, 0,
10363 ioa_cfg->vectors_info[0].desc,
10364 &ioa_cfg->hrrq[0]);
10365 if (!rc)
10366 rc = ipr_request_other_msi_irqs(ioa_cfg, pdev);
10367 } else {
10368 rc = request_irq(pdev->irq, ipr_isr,
10369 IRQF_SHARED,
10370 IPR_NAME, &ioa_cfg->hrrq[0]);
10371 }
10372 if (rc) {
10373 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
10374 pdev->irq, rc);
10375 goto cleanup_nolog;
10376 }
10377
10378 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
10379 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
10380 ioa_cfg->needs_warm_reset = 1;
10381 ioa_cfg->reset = ipr_reset_slot_reset;
10382
10383 ioa_cfg->reset_work_q = alloc_ordered_workqueue("ipr_reset_%d",
10384 WQ_MEM_RECLAIM, host->host_no);
10385
10386 if (!ioa_cfg->reset_work_q) {
10387 dev_err(&pdev->dev, "Couldn't register reset workqueue\n");
10388 rc = -ENOMEM;
10389 goto out_free_irq;
10390 }
10391 } else
10392 ioa_cfg->reset = ipr_reset_start_bist;
10393
10394 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10395 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
10396 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10397
10398 LEAVE;
10399 out:
10400 return rc;
10401
10402 out_free_irq:
10403 ipr_free_irqs(ioa_cfg);
10404 cleanup_nolog:
10405 ipr_free_mem(ioa_cfg);
10406 out_msi_disable:
10407 ipr_wait_for_pci_err_recovery(ioa_cfg);
10408 pci_free_irq_vectors(pdev);
10409 cleanup_nomem:
10410 iounmap(ipr_regs);
10411 out_disable:
10412 pci_disable_device(pdev);
10413 out_release_regions:
10414 pci_release_regions(pdev);
10415 out_scsi_host_put:
10416 scsi_host_put(host);
10417 goto out;
10418 }
10419
10420 /**
10421 * ipr_initiate_ioa_bringdown - Bring down an adapter
10422 * @ioa_cfg: ioa config struct
10423 * @shutdown_type: shutdown type
10424 *
10425 * Description: This function will initiate bringing down the adapter.
10426 * This consists of issuing an IOA shutdown to the adapter
10427 * to flush the cache, and running BIST.
10428 * If the caller needs to wait on the completion of the reset,
10429 * the caller must sleep on the reset_wait_q.
10430 *
10431 * Return value:
10432 * none
10433 **/
ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg * ioa_cfg,enum ipr_shutdown_type shutdown_type)10434 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
10435 enum ipr_shutdown_type shutdown_type)
10436 {
10437 ENTER;
10438 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
10439 ioa_cfg->sdt_state = ABORT_DUMP;
10440 ioa_cfg->reset_retries = 0;
10441 ioa_cfg->in_ioa_bringdown = 1;
10442 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
10443 LEAVE;
10444 }
10445
10446 /**
10447 * __ipr_remove - Remove a single adapter
10448 * @pdev: pci device struct
10449 *
10450 * Adapter hot plug remove entry point.
10451 *
10452 * Return value:
10453 * none
10454 **/
__ipr_remove(struct pci_dev * pdev)10455 static void __ipr_remove(struct pci_dev *pdev)
10456 {
10457 unsigned long host_lock_flags = 0;
10458 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10459 int i;
10460 unsigned long driver_lock_flags;
10461 ENTER;
10462
10463 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10464 while (ioa_cfg->in_reset_reload) {
10465 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10466 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10467 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10468 }
10469
10470 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
10471 spin_lock(&ioa_cfg->hrrq[i]._lock);
10472 ioa_cfg->hrrq[i].removing_ioa = 1;
10473 spin_unlock(&ioa_cfg->hrrq[i]._lock);
10474 }
10475 wmb();
10476 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
10477
10478 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10479 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10480 flush_work(&ioa_cfg->work_q);
10481 if (ioa_cfg->reset_work_q)
10482 flush_workqueue(ioa_cfg->reset_work_q);
10483 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
10484 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
10485
10486 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10487 list_del(&ioa_cfg->queue);
10488 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10489
10490 if (ioa_cfg->sdt_state == ABORT_DUMP)
10491 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
10492 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
10493
10494 ipr_free_all_resources(ioa_cfg);
10495
10496 LEAVE;
10497 }
10498
10499 /**
10500 * ipr_remove - IOA hot plug remove entry point
10501 * @pdev: pci device struct
10502 *
10503 * Adapter hot plug remove entry point.
10504 *
10505 * Return value:
10506 * none
10507 **/
ipr_remove(struct pci_dev * pdev)10508 static void ipr_remove(struct pci_dev *pdev)
10509 {
10510 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10511
10512 ENTER;
10513
10514 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10515 &ipr_trace_attr);
10516 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10517 &ipr_dump_attr);
10518 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10519 &ipr_ioa_async_err_log);
10520 scsi_remove_host(ioa_cfg->host);
10521
10522 __ipr_remove(pdev);
10523
10524 LEAVE;
10525 }
10526
10527 /**
10528 * ipr_probe - Adapter hot plug add entry point
10529 *
10530 * Return value:
10531 * 0 on success / non-zero on failure
10532 **/
ipr_probe(struct pci_dev * pdev,const struct pci_device_id * dev_id)10533 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
10534 {
10535 struct ipr_ioa_cfg *ioa_cfg;
10536 unsigned long flags;
10537 int rc, i;
10538
10539 rc = ipr_probe_ioa(pdev, dev_id);
10540
10541 if (rc)
10542 return rc;
10543
10544 ioa_cfg = pci_get_drvdata(pdev);
10545 rc = ipr_probe_ioa_part2(ioa_cfg);
10546
10547 if (rc) {
10548 __ipr_remove(pdev);
10549 return rc;
10550 }
10551
10552 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
10553
10554 if (rc) {
10555 __ipr_remove(pdev);
10556 return rc;
10557 }
10558
10559 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
10560 &ipr_trace_attr);
10561
10562 if (rc) {
10563 scsi_remove_host(ioa_cfg->host);
10564 __ipr_remove(pdev);
10565 return rc;
10566 }
10567
10568 rc = sysfs_create_bin_file(&ioa_cfg->host->shost_dev.kobj,
10569 &ipr_ioa_async_err_log);
10570
10571 if (rc) {
10572 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
10573 &ipr_dump_attr);
10574 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10575 &ipr_trace_attr);
10576 scsi_remove_host(ioa_cfg->host);
10577 __ipr_remove(pdev);
10578 return rc;
10579 }
10580
10581 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
10582 &ipr_dump_attr);
10583
10584 if (rc) {
10585 sysfs_remove_bin_file(&ioa_cfg->host->shost_dev.kobj,
10586 &ipr_ioa_async_err_log);
10587 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
10588 &ipr_trace_attr);
10589 scsi_remove_host(ioa_cfg->host);
10590 __ipr_remove(pdev);
10591 return rc;
10592 }
10593 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10594 ioa_cfg->scan_enabled = 1;
10595 schedule_work(&ioa_cfg->work_q);
10596 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10597
10598 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
10599
10600 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10601 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
10602 irq_poll_init(&ioa_cfg->hrrq[i].iopoll,
10603 ioa_cfg->iopoll_weight, ipr_iopoll);
10604 }
10605 }
10606
10607 scsi_scan_host(ioa_cfg->host);
10608
10609 return 0;
10610 }
10611
10612 /**
10613 * ipr_shutdown - Shutdown handler.
10614 * @pdev: pci device struct
10615 *
10616 * This function is invoked upon system shutdown/reboot. It will issue
10617 * an adapter shutdown to the adapter to flush the write cache.
10618 *
10619 * Return value:
10620 * none
10621 **/
ipr_shutdown(struct pci_dev * pdev)10622 static void ipr_shutdown(struct pci_dev *pdev)
10623 {
10624 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
10625 unsigned long lock_flags = 0;
10626 enum ipr_shutdown_type shutdown_type = IPR_SHUTDOWN_NORMAL;
10627 int i;
10628
10629 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10630 if (ioa_cfg->iopoll_weight && ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
10631 ioa_cfg->iopoll_weight = 0;
10632 for (i = 1; i < ioa_cfg->hrrq_num; i++)
10633 irq_poll_disable(&ioa_cfg->hrrq[i].iopoll);
10634 }
10635
10636 while (ioa_cfg->in_reset_reload) {
10637 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10638 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10639 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
10640 }
10641
10642 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64)
10643 shutdown_type = IPR_SHUTDOWN_QUIESCE;
10644
10645 ipr_initiate_ioa_bringdown(ioa_cfg, shutdown_type);
10646 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
10647 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
10648 if (ipr_fast_reboot && system_state == SYSTEM_RESTART && ioa_cfg->sis64) {
10649 ipr_free_irqs(ioa_cfg);
10650 pci_disable_device(ioa_cfg->pdev);
10651 }
10652 }
10653
10654 static struct pci_device_id ipr_pci_table[] = {
10655 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10656 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
10657 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10658 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
10659 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10660 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
10661 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
10662 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
10663 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10664 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
10665 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10666 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
10667 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10668 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
10669 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
10670 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
10671 IPR_USE_LONG_TRANSOP_TIMEOUT },
10672 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10673 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10674 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10675 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10676 IPR_USE_LONG_TRANSOP_TIMEOUT },
10677 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
10678 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10679 IPR_USE_LONG_TRANSOP_TIMEOUT },
10680 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10681 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
10682 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10683 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
10684 IPR_USE_LONG_TRANSOP_TIMEOUT},
10685 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
10686 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
10687 IPR_USE_LONG_TRANSOP_TIMEOUT },
10688 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10689 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
10690 IPR_USE_LONG_TRANSOP_TIMEOUT },
10691 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10692 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
10693 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10694 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
10695 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
10696 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
10697 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
10698 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
10699 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
10700 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10701 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
10702 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10703 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
10704 IPR_USE_LONG_TRANSOP_TIMEOUT },
10705 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
10706 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
10707 IPR_USE_LONG_TRANSOP_TIMEOUT },
10708 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10709 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
10710 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10711 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
10712 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10713 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
10714 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10715 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
10716 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10717 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
10718 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
10719 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
10720 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10721 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
10722 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10723 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
10724 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10725 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
10726 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10727 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
10728 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10729 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
10730 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10731 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
10732 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10733 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
10734 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10735 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
10736 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10737 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
10738 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10739 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D9, 0, 0, 0 },
10740 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10741 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57DA, 0, 0, 0 },
10742 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10743 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EB, 0, 0, 0 },
10744 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10745 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EC, 0, 0, 0 },
10746 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10747 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57ED, 0, 0, 0 },
10748 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10749 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EE, 0, 0, 0 },
10750 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10751 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57EF, 0, 0, 0 },
10752 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10753 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57F0, 0, 0, 0 },
10754 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10755 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCA, 0, 0, 0 },
10756 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10757 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CD2, 0, 0, 0 },
10758 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
10759 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2CCD, 0, 0, 0 },
10760 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10761 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580A, 0, 0, 0 },
10762 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_RATTLESNAKE,
10763 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_580B, 0, 0, 0 },
10764 { }
10765 };
10766 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
10767
10768 static const struct pci_error_handlers ipr_err_handler = {
10769 .error_detected = ipr_pci_error_detected,
10770 .mmio_enabled = ipr_pci_mmio_enabled,
10771 .slot_reset = ipr_pci_slot_reset,
10772 };
10773
10774 static struct pci_driver ipr_driver = {
10775 .name = IPR_NAME,
10776 .id_table = ipr_pci_table,
10777 .probe = ipr_probe,
10778 .remove = ipr_remove,
10779 .shutdown = ipr_shutdown,
10780 .err_handler = &ipr_err_handler,
10781 };
10782
10783 /**
10784 * ipr_halt_done - Shutdown prepare completion
10785 *
10786 * Return value:
10787 * none
10788 **/
ipr_halt_done(struct ipr_cmnd * ipr_cmd)10789 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
10790 {
10791 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
10792 }
10793
10794 /**
10795 * ipr_halt - Issue shutdown prepare to all adapters
10796 *
10797 * Return value:
10798 * NOTIFY_OK on success / NOTIFY_DONE on failure
10799 **/
ipr_halt(struct notifier_block * nb,ulong event,void * buf)10800 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
10801 {
10802 struct ipr_cmnd *ipr_cmd;
10803 struct ipr_ioa_cfg *ioa_cfg;
10804 unsigned long flags = 0, driver_lock_flags;
10805
10806 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10807 return NOTIFY_DONE;
10808
10809 spin_lock_irqsave(&ipr_driver_lock, driver_lock_flags);
10810
10811 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10812 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10813 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
10814 (ipr_fast_reboot && event == SYS_RESTART && ioa_cfg->sis64)) {
10815 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10816 continue;
10817 }
10818
10819 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10820 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10821 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10822 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10823 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10824
10825 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10826 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10827 }
10828 spin_unlock_irqrestore(&ipr_driver_lock, driver_lock_flags);
10829
10830 return NOTIFY_OK;
10831 }
10832
10833 static struct notifier_block ipr_notifier = {
10834 ipr_halt, NULL, 0
10835 };
10836
10837 /**
10838 * ipr_init - Module entry point
10839 *
10840 * Return value:
10841 * 0 on success / negative value on failure
10842 **/
ipr_init(void)10843 static int __init ipr_init(void)
10844 {
10845 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10846 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10847
10848 register_reboot_notifier(&ipr_notifier);
10849 return pci_register_driver(&ipr_driver);
10850 }
10851
10852 /**
10853 * ipr_exit - Module unload
10854 *
10855 * Module unload entry point.
10856 *
10857 * Return value:
10858 * none
10859 **/
ipr_exit(void)10860 static void __exit ipr_exit(void)
10861 {
10862 unregister_reboot_notifier(&ipr_notifier);
10863 pci_unregister_driver(&ipr_driver);
10864 }
10865
10866 module_init(ipr_init);
10867 module_exit(ipr_exit);
10868