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