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Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block
[GitHub/mt8127/android_kernel_alcatel_ttab.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 - 5). (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 {0x02040400, 0, 0,
285 "34FF: Disk device format in progress"},
286 {0x02048000, 0, IPR_DEFAULT_LOG_LEVEL,
287 "9070: IOA requested reset"},
288 {0x023F0000, 0, 0,
289 "Synchronization required"},
290 {0x024E0000, 0, 0,
291 "No ready, IOA shutdown"},
292 {0x025A0000, 0, 0,
293 "Not ready, IOA has been shutdown"},
294 {0x02670100, 0, IPR_DEFAULT_LOG_LEVEL,
295 "3020: Storage subsystem configuration error"},
296 {0x03110B00, 0, 0,
297 "FFF5: Medium error, data unreadable, recommend reassign"},
298 {0x03110C00, 0, 0,
299 "7000: Medium error, data unreadable, do not reassign"},
300 {0x03310000, 0, IPR_DEFAULT_LOG_LEVEL,
301 "FFF3: Disk media format bad"},
302 {0x04050000, 0, IPR_DEFAULT_LOG_LEVEL,
303 "3002: Addressed device failed to respond to selection"},
304 {0x04080000, 1, IPR_DEFAULT_LOG_LEVEL,
305 "3100: Device bus error"},
306 {0x04080100, 0, IPR_DEFAULT_LOG_LEVEL,
307 "3109: IOA timed out a device command"},
308 {0x04088000, 0, 0,
309 "3120: SCSI bus is not operational"},
310 {0x04088100, 0, IPR_DEFAULT_LOG_LEVEL,
311 "4100: Hard device bus fabric error"},
312 {0x04100100, 0, IPR_DEFAULT_LOG_LEVEL,
313 "310C: Logical block guard error detected by the device"},
314 {0x04100300, 0, IPR_DEFAULT_LOG_LEVEL,
315 "310C: Logical block reference tag error detected by the device"},
316 {0x04108300, 1, IPR_DEFAULT_LOG_LEVEL,
317 "4170: Scatter list tag / sequence number error"},
318 {0x04109000, 1, IPR_DEFAULT_LOG_LEVEL,
319 "8150: Logical block CRC error on IOA to Host transfer"},
320 {0x04109200, 1, IPR_DEFAULT_LOG_LEVEL,
321 "4170: Logical block sequence number error on IOA to Host transfer"},
322 {0x0410A000, 0, IPR_DEFAULT_LOG_LEVEL,
323 "310D: Logical block reference tag error detected by the IOA"},
324 {0x0410A100, 0, IPR_DEFAULT_LOG_LEVEL,
325 "310D: Logical block guard error detected by the IOA"},
326 {0x04118000, 0, IPR_DEFAULT_LOG_LEVEL,
327 "9000: IOA reserved area data check"},
328 {0x04118100, 0, IPR_DEFAULT_LOG_LEVEL,
329 "9001: IOA reserved area invalid data pattern"},
330 {0x04118200, 0, IPR_DEFAULT_LOG_LEVEL,
331 "9002: IOA reserved area LRC error"},
332 {0x04118300, 1, IPR_DEFAULT_LOG_LEVEL,
333 "Hardware Error, IOA metadata access error"},
334 {0x04320000, 0, IPR_DEFAULT_LOG_LEVEL,
335 "102E: Out of alternate sectors for disk storage"},
336 {0x04330000, 1, IPR_DEFAULT_LOG_LEVEL,
337 "FFF4: Data transfer underlength error"},
338 {0x04338000, 1, IPR_DEFAULT_LOG_LEVEL,
339 "FFF4: Data transfer overlength error"},
340 {0x043E0100, 0, IPR_DEFAULT_LOG_LEVEL,
341 "3400: Logical unit failure"},
342 {0x04408500, 0, IPR_DEFAULT_LOG_LEVEL,
343 "FFF4: Device microcode is corrupt"},
344 {0x04418000, 1, IPR_DEFAULT_LOG_LEVEL,
345 "8150: PCI bus error"},
346 {0x04430000, 1, 0,
347 "Unsupported device bus message received"},
348 {0x04440000, 1, IPR_DEFAULT_LOG_LEVEL,
349 "FFF4: Disk device problem"},
350 {0x04448200, 1, IPR_DEFAULT_LOG_LEVEL,
351 "8150: Permanent IOA failure"},
352 {0x04448300, 0, IPR_DEFAULT_LOG_LEVEL,
353 "3010: Disk device returned wrong response to IOA"},
354 {0x04448400, 0, IPR_DEFAULT_LOG_LEVEL,
355 "8151: IOA microcode error"},
356 {0x04448500, 0, 0,
357 "Device bus status error"},
358 {0x04448600, 0, IPR_DEFAULT_LOG_LEVEL,
359 "8157: IOA error requiring IOA reset to recover"},
360 {0x04448700, 0, 0,
361 "ATA device status error"},
362 {0x04490000, 0, 0,
363 "Message reject received from the device"},
364 {0x04449200, 0, IPR_DEFAULT_LOG_LEVEL,
365 "8008: A permanent cache battery pack failure occurred"},
366 {0x0444A000, 0, IPR_DEFAULT_LOG_LEVEL,
367 "9090: Disk unit has been modified after the last known status"},
368 {0x0444A200, 0, IPR_DEFAULT_LOG_LEVEL,
369 "9081: IOA detected device error"},
370 {0x0444A300, 0, IPR_DEFAULT_LOG_LEVEL,
371 "9082: IOA detected device error"},
372 {0x044A0000, 1, IPR_DEFAULT_LOG_LEVEL,
373 "3110: Device bus error, message or command phase"},
374 {0x044A8000, 1, IPR_DEFAULT_LOG_LEVEL,
375 "3110: SAS Command / Task Management Function failed"},
376 {0x04670400, 0, IPR_DEFAULT_LOG_LEVEL,
377 "9091: Incorrect hardware configuration change has been detected"},
378 {0x04678000, 0, IPR_DEFAULT_LOG_LEVEL,
379 "9073: Invalid multi-adapter configuration"},
380 {0x04678100, 0, IPR_DEFAULT_LOG_LEVEL,
381 "4010: Incorrect connection between cascaded expanders"},
382 {0x04678200, 0, IPR_DEFAULT_LOG_LEVEL,
383 "4020: Connections exceed IOA design limits"},
384 {0x04678300, 0, IPR_DEFAULT_LOG_LEVEL,
385 "4030: Incorrect multipath connection"},
386 {0x04679000, 0, IPR_DEFAULT_LOG_LEVEL,
387 "4110: Unsupported enclosure function"},
388 {0x046E0000, 0, IPR_DEFAULT_LOG_LEVEL,
389 "FFF4: Command to logical unit failed"},
390 {0x05240000, 1, 0,
391 "Illegal request, invalid request type or request packet"},
392 {0x05250000, 0, 0,
393 "Illegal request, invalid resource handle"},
394 {0x05258000, 0, 0,
395 "Illegal request, commands not allowed to this device"},
396 {0x05258100, 0, 0,
397 "Illegal request, command not allowed to a secondary adapter"},
398 {0x05258200, 0, 0,
399 "Illegal request, command not allowed to a non-optimized resource"},
400 {0x05260000, 0, 0,
401 "Illegal request, invalid field in parameter list"},
402 {0x05260100, 0, 0,
403 "Illegal request, parameter not supported"},
404 {0x05260200, 0, 0,
405 "Illegal request, parameter value invalid"},
406 {0x052C0000, 0, 0,
407 "Illegal request, command sequence error"},
408 {0x052C8000, 1, 0,
409 "Illegal request, dual adapter support not enabled"},
410 {0x06040500, 0, IPR_DEFAULT_LOG_LEVEL,
411 "9031: Array protection temporarily suspended, protection resuming"},
412 {0x06040600, 0, IPR_DEFAULT_LOG_LEVEL,
413 "9040: Array protection temporarily suspended, protection resuming"},
414 {0x06288000, 0, IPR_DEFAULT_LOG_LEVEL,
415 "3140: Device bus not ready to ready transition"},
416 {0x06290000, 0, IPR_DEFAULT_LOG_LEVEL,
417 "FFFB: SCSI bus was reset"},
418 {0x06290500, 0, 0,
419 "FFFE: SCSI bus transition to single ended"},
420 {0x06290600, 0, 0,
421 "FFFE: SCSI bus transition to LVD"},
422 {0x06298000, 0, IPR_DEFAULT_LOG_LEVEL,
423 "FFFB: SCSI bus was reset by another initiator"},
424 {0x063F0300, 0, IPR_DEFAULT_LOG_LEVEL,
425 "3029: A device replacement has occurred"},
426 {0x064C8000, 0, IPR_DEFAULT_LOG_LEVEL,
427 "9051: IOA cache data exists for a missing or failed device"},
428 {0x064C8100, 0, IPR_DEFAULT_LOG_LEVEL,
429 "9055: Auxiliary cache IOA contains cache data needed by the primary IOA"},
430 {0x06670100, 0, IPR_DEFAULT_LOG_LEVEL,
431 "9025: Disk unit is not supported at its physical location"},
432 {0x06670600, 0, IPR_DEFAULT_LOG_LEVEL,
433 "3020: IOA detected a SCSI bus configuration error"},
434 {0x06678000, 0, IPR_DEFAULT_LOG_LEVEL,
435 "3150: SCSI bus configuration error"},
436 {0x06678100, 0, IPR_DEFAULT_LOG_LEVEL,
437 "9074: Asymmetric advanced function disk configuration"},
438 {0x06678300, 0, IPR_DEFAULT_LOG_LEVEL,
439 "4040: Incomplete multipath connection between IOA and enclosure"},
440 {0x06678400, 0, IPR_DEFAULT_LOG_LEVEL,
441 "4041: Incomplete multipath connection between enclosure and device"},
442 {0x06678500, 0, IPR_DEFAULT_LOG_LEVEL,
443 "9075: Incomplete multipath connection between IOA and remote IOA"},
444 {0x06678600, 0, IPR_DEFAULT_LOG_LEVEL,
445 "9076: Configuration error, missing remote IOA"},
446 {0x06679100, 0, IPR_DEFAULT_LOG_LEVEL,
447 "4050: Enclosure does not support a required multipath function"},
448 {0x06690000, 0, IPR_DEFAULT_LOG_LEVEL,
449 "4070: Logically bad block written on device"},
450 {0x06690200, 0, IPR_DEFAULT_LOG_LEVEL,
451 "9041: Array protection temporarily suspended"},
452 {0x06698200, 0, IPR_DEFAULT_LOG_LEVEL,
453 "9042: Corrupt array parity detected on specified device"},
454 {0x066B0200, 0, IPR_DEFAULT_LOG_LEVEL,
455 "9030: Array no longer protected due to missing or failed disk unit"},
456 {0x066B8000, 0, IPR_DEFAULT_LOG_LEVEL,
457 "9071: Link operational transition"},
458 {0x066B8100, 0, IPR_DEFAULT_LOG_LEVEL,
459 "9072: Link not operational transition"},
460 {0x066B8200, 0, IPR_DEFAULT_LOG_LEVEL,
461 "9032: Array exposed but still protected"},
462 {0x066B8300, 0, IPR_DEFAULT_LOG_LEVEL + 1,
463 "70DD: Device forced failed by disrupt device command"},
464 {0x066B9100, 0, IPR_DEFAULT_LOG_LEVEL,
465 "4061: Multipath redundancy level got better"},
466 {0x066B9200, 0, IPR_DEFAULT_LOG_LEVEL,
467 "4060: Multipath redundancy level got worse"},
468 {0x07270000, 0, 0,
469 "Failure due to other device"},
470 {0x07278000, 0, IPR_DEFAULT_LOG_LEVEL,
471 "9008: IOA does not support functions expected by devices"},
472 {0x07278100, 0, IPR_DEFAULT_LOG_LEVEL,
473 "9010: Cache data associated with attached devices cannot be found"},
474 {0x07278200, 0, IPR_DEFAULT_LOG_LEVEL,
475 "9011: Cache data belongs to devices other than those attached"},
476 {0x07278400, 0, IPR_DEFAULT_LOG_LEVEL,
477 "9020: Array missing 2 or more devices with only 1 device present"},
478 {0x07278500, 0, IPR_DEFAULT_LOG_LEVEL,
479 "9021: Array missing 2 or more devices with 2 or more devices present"},
480 {0x07278600, 0, IPR_DEFAULT_LOG_LEVEL,
481 "9022: Exposed array is missing a required device"},
482 {0x07278700, 0, IPR_DEFAULT_LOG_LEVEL,
483 "9023: Array member(s) not at required physical locations"},
484 {0x07278800, 0, IPR_DEFAULT_LOG_LEVEL,
485 "9024: Array not functional due to present hardware configuration"},
486 {0x07278900, 0, IPR_DEFAULT_LOG_LEVEL,
487 "9026: Array not functional due to present hardware configuration"},
488 {0x07278A00, 0, IPR_DEFAULT_LOG_LEVEL,
489 "9027: Array is missing a device and parity is out of sync"},
490 {0x07278B00, 0, IPR_DEFAULT_LOG_LEVEL,
491 "9028: Maximum number of arrays already exist"},
492 {0x07278C00, 0, IPR_DEFAULT_LOG_LEVEL,
493 "9050: Required cache data cannot be located for a disk unit"},
494 {0x07278D00, 0, IPR_DEFAULT_LOG_LEVEL,
495 "9052: Cache data exists for a device that has been modified"},
496 {0x07278F00, 0, IPR_DEFAULT_LOG_LEVEL,
497 "9054: IOA resources not available due to previous problems"},
498 {0x07279100, 0, IPR_DEFAULT_LOG_LEVEL,
499 "9092: Disk unit requires initialization before use"},
500 {0x07279200, 0, IPR_DEFAULT_LOG_LEVEL,
501 "9029: Incorrect hardware configuration change has been detected"},
502 {0x07279600, 0, IPR_DEFAULT_LOG_LEVEL,
503 "9060: One or more disk pairs are missing from an array"},
504 {0x07279700, 0, IPR_DEFAULT_LOG_LEVEL,
505 "9061: One or more disks are missing from an array"},
506 {0x07279800, 0, IPR_DEFAULT_LOG_LEVEL,
507 "9062: One or more disks are missing from an array"},
508 {0x07279900, 0, IPR_DEFAULT_LOG_LEVEL,
509 "9063: Maximum number of functional arrays has been exceeded"},
510 {0x0B260000, 0, 0,
511 "Aborted command, invalid descriptor"},
512 {0x0B5A0000, 0, 0,
513 "Command terminated by host"}
514 };
515
516 static const struct ipr_ses_table_entry ipr_ses_table[] = {
517 { "2104-DL1 ", "XXXXXXXXXXXXXXXX", 80 },
518 { "2104-TL1 ", "XXXXXXXXXXXXXXXX", 80 },
519 { "HSBP07M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 7 slot */
520 { "HSBP05M P U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Hidive 5 slot */
521 { "HSBP05M S U2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* Bowtie */
522 { "HSBP06E ASU2SCSI", "XXXXXXXXXXXXXXXX", 80 }, /* MartinFenning */
523 { "2104-DU3 ", "XXXXXXXXXXXXXXXX", 160 },
524 { "2104-TU3 ", "XXXXXXXXXXXXXXXX", 160 },
525 { "HSBP04C RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
526 { "HSBP06E RSU2SCSI", "XXXXXXX*XXXXXXXX", 160 },
527 { "St V1S2 ", "XXXXXXXXXXXXXXXX", 160 },
528 { "HSBPD4M PU3SCSI", "XXXXXXX*XXXXXXXX", 160 },
529 { "VSBPD1H U3SCSI", "XXXXXXX*XXXXXXXX", 160 }
530 };
531
532 /*
533 * Function Prototypes
534 */
535 static int ipr_reset_alert(struct ipr_cmnd *);
536 static void ipr_process_ccn(struct ipr_cmnd *);
537 static void ipr_process_error(struct ipr_cmnd *);
538 static void ipr_reset_ioa_job(struct ipr_cmnd *);
539 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *,
540 enum ipr_shutdown_type);
541
542 #ifdef CONFIG_SCSI_IPR_TRACE
543 /**
544 * ipr_trc_hook - Add a trace entry to the driver trace
545 * @ipr_cmd: ipr command struct
546 * @type: trace type
547 * @add_data: additional data
548 *
549 * Return value:
550 * none
551 **/
552 static void ipr_trc_hook(struct ipr_cmnd *ipr_cmd,
553 u8 type, u32 add_data)
554 {
555 struct ipr_trace_entry *trace_entry;
556 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
557
558 trace_entry = &ioa_cfg->trace[atomic_add_return
559 (1, &ioa_cfg->trace_index)%IPR_NUM_TRACE_ENTRIES];
560 trace_entry->time = jiffies;
561 trace_entry->op_code = ipr_cmd->ioarcb.cmd_pkt.cdb[0];
562 trace_entry->type = type;
563 if (ipr_cmd->ioa_cfg->sis64)
564 trace_entry->ata_op_code = ipr_cmd->i.ata_ioadl.regs.command;
565 else
566 trace_entry->ata_op_code = ipr_cmd->ioarcb.u.add_data.u.regs.command;
567 trace_entry->cmd_index = ipr_cmd->cmd_index & 0xff;
568 trace_entry->res_handle = ipr_cmd->ioarcb.res_handle;
569 trace_entry->u.add_data = add_data;
570 wmb();
571 }
572 #else
573 #define ipr_trc_hook(ipr_cmd, type, add_data) do { } while (0)
574 #endif
575
576 /**
577 * ipr_lock_and_done - Acquire lock and complete command
578 * @ipr_cmd: ipr command struct
579 *
580 * Return value:
581 * none
582 **/
583 static void ipr_lock_and_done(struct ipr_cmnd *ipr_cmd)
584 {
585 unsigned long lock_flags;
586 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
587
588 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
589 ipr_cmd->done(ipr_cmd);
590 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
591 }
592
593 /**
594 * ipr_reinit_ipr_cmnd - Re-initialize an IPR Cmnd block for reuse
595 * @ipr_cmd: ipr command struct
596 *
597 * Return value:
598 * none
599 **/
600 static void ipr_reinit_ipr_cmnd(struct ipr_cmnd *ipr_cmd)
601 {
602 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
603 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
604 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
605 dma_addr_t dma_addr = ipr_cmd->dma_addr;
606 int hrrq_id;
607
608 hrrq_id = ioarcb->cmd_pkt.hrrq_id;
609 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
610 ioarcb->cmd_pkt.hrrq_id = hrrq_id;
611 ioarcb->data_transfer_length = 0;
612 ioarcb->read_data_transfer_length = 0;
613 ioarcb->ioadl_len = 0;
614 ioarcb->read_ioadl_len = 0;
615
616 if (ipr_cmd->ioa_cfg->sis64) {
617 ioarcb->u.sis64_addr_data.data_ioadl_addr =
618 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
619 ioasa64->u.gata.status = 0;
620 } else {
621 ioarcb->write_ioadl_addr =
622 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
623 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
624 ioasa->u.gata.status = 0;
625 }
626
627 ioasa->hdr.ioasc = 0;
628 ioasa->hdr.residual_data_len = 0;
629 ipr_cmd->scsi_cmd = NULL;
630 ipr_cmd->qc = NULL;
631 ipr_cmd->sense_buffer[0] = 0;
632 ipr_cmd->dma_use_sg = 0;
633 }
634
635 /**
636 * ipr_init_ipr_cmnd - Initialize an IPR Cmnd block
637 * @ipr_cmd: ipr command struct
638 *
639 * Return value:
640 * none
641 **/
642 static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd,
643 void (*fast_done) (struct ipr_cmnd *))
644 {
645 ipr_reinit_ipr_cmnd(ipr_cmd);
646 ipr_cmd->u.scratch = 0;
647 ipr_cmd->sibling = NULL;
648 ipr_cmd->fast_done = fast_done;
649 init_timer(&ipr_cmd->timer);
650 }
651
652 /**
653 * __ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block
654 * @ioa_cfg: ioa config struct
655 *
656 * Return value:
657 * pointer to ipr command struct
658 **/
659 static
660 struct ipr_cmnd *__ipr_get_free_ipr_cmnd(struct ipr_hrr_queue *hrrq)
661 {
662 struct ipr_cmnd *ipr_cmd = NULL;
663
664 if (likely(!list_empty(&hrrq->hrrq_free_q))) {
665 ipr_cmd = list_entry(hrrq->hrrq_free_q.next,
666 struct ipr_cmnd, queue);
667 list_del(&ipr_cmd->queue);
668 }
669
670
671 return ipr_cmd;
672 }
673
674 /**
675 * ipr_get_free_ipr_cmnd - Get a free IPR Cmnd block and initialize it
676 * @ioa_cfg: ioa config struct
677 *
678 * Return value:
679 * pointer to ipr command struct
680 **/
681 static
682 struct ipr_cmnd *ipr_get_free_ipr_cmnd(struct ipr_ioa_cfg *ioa_cfg)
683 {
684 struct ipr_cmnd *ipr_cmd =
685 __ipr_get_free_ipr_cmnd(&ioa_cfg->hrrq[IPR_INIT_HRRQ]);
686 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
687 return ipr_cmd;
688 }
689
690 /**
691 * ipr_mask_and_clear_interrupts - Mask all and clear specified interrupts
692 * @ioa_cfg: ioa config struct
693 * @clr_ints: interrupts to clear
694 *
695 * This function masks all interrupts on the adapter, then clears the
696 * interrupts specified in the mask
697 *
698 * Return value:
699 * none
700 **/
701 static void ipr_mask_and_clear_interrupts(struct ipr_ioa_cfg *ioa_cfg,
702 u32 clr_ints)
703 {
704 volatile u32 int_reg;
705 int i;
706
707 /* Stop new interrupts */
708 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
709 spin_lock(&ioa_cfg->hrrq[i]._lock);
710 ioa_cfg->hrrq[i].allow_interrupts = 0;
711 spin_unlock(&ioa_cfg->hrrq[i]._lock);
712 }
713 wmb();
714
715 /* Set interrupt mask to stop all new interrupts */
716 if (ioa_cfg->sis64)
717 writeq(~0, ioa_cfg->regs.set_interrupt_mask_reg);
718 else
719 writel(~0, ioa_cfg->regs.set_interrupt_mask_reg);
720
721 /* Clear any pending interrupts */
722 if (ioa_cfg->sis64)
723 writel(~0, ioa_cfg->regs.clr_interrupt_reg);
724 writel(clr_ints, ioa_cfg->regs.clr_interrupt_reg32);
725 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
726 }
727
728 /**
729 * ipr_save_pcix_cmd_reg - Save PCI-X command register
730 * @ioa_cfg: ioa config struct
731 *
732 * Return value:
733 * 0 on success / -EIO on failure
734 **/
735 static int ipr_save_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
736 {
737 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
738
739 if (pcix_cmd_reg == 0)
740 return 0;
741
742 if (pci_read_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
743 &ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
744 dev_err(&ioa_cfg->pdev->dev, "Failed to save PCI-X command register\n");
745 return -EIO;
746 }
747
748 ioa_cfg->saved_pcix_cmd_reg |= PCI_X_CMD_DPERR_E | PCI_X_CMD_ERO;
749 return 0;
750 }
751
752 /**
753 * ipr_set_pcix_cmd_reg - Setup PCI-X command register
754 * @ioa_cfg: ioa config struct
755 *
756 * Return value:
757 * 0 on success / -EIO on failure
758 **/
759 static int ipr_set_pcix_cmd_reg(struct ipr_ioa_cfg *ioa_cfg)
760 {
761 int pcix_cmd_reg = pci_find_capability(ioa_cfg->pdev, PCI_CAP_ID_PCIX);
762
763 if (pcix_cmd_reg) {
764 if (pci_write_config_word(ioa_cfg->pdev, pcix_cmd_reg + PCI_X_CMD,
765 ioa_cfg->saved_pcix_cmd_reg) != PCIBIOS_SUCCESSFUL) {
766 dev_err(&ioa_cfg->pdev->dev, "Failed to setup PCI-X command register\n");
767 return -EIO;
768 }
769 }
770
771 return 0;
772 }
773
774 /**
775 * ipr_sata_eh_done - done function for aborted SATA commands
776 * @ipr_cmd: ipr command struct
777 *
778 * This function is invoked for ops generated to SATA
779 * devices which are being aborted.
780 *
781 * Return value:
782 * none
783 **/
784 static void ipr_sata_eh_done(struct ipr_cmnd *ipr_cmd)
785 {
786 struct ata_queued_cmd *qc = ipr_cmd->qc;
787 struct ipr_sata_port *sata_port = qc->ap->private_data;
788
789 qc->err_mask |= AC_ERR_OTHER;
790 sata_port->ioasa.status |= ATA_BUSY;
791 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
792 ata_qc_complete(qc);
793 }
794
795 /**
796 * ipr_scsi_eh_done - mid-layer done function for aborted ops
797 * @ipr_cmd: ipr command struct
798 *
799 * This function is invoked by the interrupt handler for
800 * ops generated by the SCSI mid-layer which are being aborted.
801 *
802 * Return value:
803 * none
804 **/
805 static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd)
806 {
807 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
808
809 scsi_cmd->result |= (DID_ERROR << 16);
810
811 scsi_dma_unmap(ipr_cmd->scsi_cmd);
812 scsi_cmd->scsi_done(scsi_cmd);
813 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
814 }
815
816 /**
817 * ipr_fail_all_ops - Fails all outstanding ops.
818 * @ioa_cfg: ioa config struct
819 *
820 * This function fails all outstanding ops.
821 *
822 * Return value:
823 * none
824 **/
825 static void ipr_fail_all_ops(struct ipr_ioa_cfg *ioa_cfg)
826 {
827 struct ipr_cmnd *ipr_cmd, *temp;
828 struct ipr_hrr_queue *hrrq;
829
830 ENTER;
831 for_each_hrrq(hrrq, ioa_cfg) {
832 spin_lock(&hrrq->_lock);
833 list_for_each_entry_safe(ipr_cmd,
834 temp, &hrrq->hrrq_pending_q, queue) {
835 list_del(&ipr_cmd->queue);
836
837 ipr_cmd->s.ioasa.hdr.ioasc =
838 cpu_to_be32(IPR_IOASC_IOA_WAS_RESET);
839 ipr_cmd->s.ioasa.hdr.ilid =
840 cpu_to_be32(IPR_DRIVER_ILID);
841
842 if (ipr_cmd->scsi_cmd)
843 ipr_cmd->done = ipr_scsi_eh_done;
844 else if (ipr_cmd->qc)
845 ipr_cmd->done = ipr_sata_eh_done;
846
847 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH,
848 IPR_IOASC_IOA_WAS_RESET);
849 del_timer(&ipr_cmd->timer);
850 ipr_cmd->done(ipr_cmd);
851 }
852 spin_unlock(&hrrq->_lock);
853 }
854 LEAVE;
855 }
856
857 /**
858 * ipr_send_command - Send driver initiated requests.
859 * @ipr_cmd: ipr command struct
860 *
861 * This function sends a command to the adapter using the correct write call.
862 * In the case of sis64, calculate the ioarcb size required. Then or in the
863 * appropriate bits.
864 *
865 * Return value:
866 * none
867 **/
868 static void ipr_send_command(struct ipr_cmnd *ipr_cmd)
869 {
870 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
871 dma_addr_t send_dma_addr = ipr_cmd->dma_addr;
872
873 if (ioa_cfg->sis64) {
874 /* The default size is 256 bytes */
875 send_dma_addr |= 0x1;
876
877 /* If the number of ioadls * size of ioadl > 128 bytes,
878 then use a 512 byte ioarcb */
879 if (ipr_cmd->dma_use_sg * sizeof(struct ipr_ioadl64_desc) > 128 )
880 send_dma_addr |= 0x4;
881 writeq(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
882 } else
883 writel(send_dma_addr, ioa_cfg->regs.ioarrin_reg);
884 }
885
886 /**
887 * ipr_do_req - Send driver initiated requests.
888 * @ipr_cmd: ipr command struct
889 * @done: done function
890 * @timeout_func: timeout function
891 * @timeout: timeout value
892 *
893 * This function sends the specified command to the adapter with the
894 * timeout given. The done function is invoked on command completion.
895 *
896 * Return value:
897 * none
898 **/
899 static void ipr_do_req(struct ipr_cmnd *ipr_cmd,
900 void (*done) (struct ipr_cmnd *),
901 void (*timeout_func) (struct ipr_cmnd *), u32 timeout)
902 {
903 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
904
905 ipr_cmd->done = done;
906
907 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
908 ipr_cmd->timer.expires = jiffies + timeout;
909 ipr_cmd->timer.function = (void (*)(unsigned long))timeout_func;
910
911 add_timer(&ipr_cmd->timer);
912
913 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, 0);
914
915 ipr_send_command(ipr_cmd);
916 }
917
918 /**
919 * ipr_internal_cmd_done - Op done function for an internally generated op.
920 * @ipr_cmd: ipr command struct
921 *
922 * This function is the op done function for an internally generated,
923 * blocking op. It simply wakes the sleeping thread.
924 *
925 * Return value:
926 * none
927 **/
928 static void ipr_internal_cmd_done(struct ipr_cmnd *ipr_cmd)
929 {
930 if (ipr_cmd->sibling)
931 ipr_cmd->sibling = NULL;
932 else
933 complete(&ipr_cmd->completion);
934 }
935
936 /**
937 * ipr_init_ioadl - initialize the ioadl for the correct SIS type
938 * @ipr_cmd: ipr command struct
939 * @dma_addr: dma address
940 * @len: transfer length
941 * @flags: ioadl flag value
942 *
943 * This function initializes an ioadl in the case where there is only a single
944 * descriptor.
945 *
946 * Return value:
947 * nothing
948 **/
949 static void ipr_init_ioadl(struct ipr_cmnd *ipr_cmd, dma_addr_t dma_addr,
950 u32 len, int flags)
951 {
952 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
953 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
954
955 ipr_cmd->dma_use_sg = 1;
956
957 if (ipr_cmd->ioa_cfg->sis64) {
958 ioadl64->flags = cpu_to_be32(flags);
959 ioadl64->data_len = cpu_to_be32(len);
960 ioadl64->address = cpu_to_be64(dma_addr);
961
962 ipr_cmd->ioarcb.ioadl_len =
963 cpu_to_be32(sizeof(struct ipr_ioadl64_desc));
964 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
965 } else {
966 ioadl->flags_and_data_len = cpu_to_be32(flags | len);
967 ioadl->address = cpu_to_be32(dma_addr);
968
969 if (flags == IPR_IOADL_FLAGS_READ_LAST) {
970 ipr_cmd->ioarcb.read_ioadl_len =
971 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
972 ipr_cmd->ioarcb.read_data_transfer_length = cpu_to_be32(len);
973 } else {
974 ipr_cmd->ioarcb.ioadl_len =
975 cpu_to_be32(sizeof(struct ipr_ioadl_desc));
976 ipr_cmd->ioarcb.data_transfer_length = cpu_to_be32(len);
977 }
978 }
979 }
980
981 /**
982 * ipr_send_blocking_cmd - Send command and sleep on its completion.
983 * @ipr_cmd: ipr command struct
984 * @timeout_func: function to invoke if command times out
985 * @timeout: timeout
986 *
987 * Return value:
988 * none
989 **/
990 static void ipr_send_blocking_cmd(struct ipr_cmnd *ipr_cmd,
991 void (*timeout_func) (struct ipr_cmnd *ipr_cmd),
992 u32 timeout)
993 {
994 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
995
996 init_completion(&ipr_cmd->completion);
997 ipr_do_req(ipr_cmd, ipr_internal_cmd_done, timeout_func, timeout);
998
999 spin_unlock_irq(ioa_cfg->host->host_lock);
1000 wait_for_completion(&ipr_cmd->completion);
1001 spin_lock_irq(ioa_cfg->host->host_lock);
1002 }
1003
1004 static int ipr_get_hrrq_index(struct ipr_ioa_cfg *ioa_cfg)
1005 {
1006 if (ioa_cfg->hrrq_num == 1)
1007 return 0;
1008 else
1009 return (atomic_add_return(1, &ioa_cfg->hrrq_index) % (ioa_cfg->hrrq_num - 1)) + 1;
1010 }
1011
1012 /**
1013 * ipr_send_hcam - Send an HCAM to the adapter.
1014 * @ioa_cfg: ioa config struct
1015 * @type: HCAM type
1016 * @hostrcb: hostrcb struct
1017 *
1018 * This function will send a Host Controlled Async command to the adapter.
1019 * If HCAMs are currently not allowed to be issued to the adapter, it will
1020 * place the hostrcb on the free queue.
1021 *
1022 * Return value:
1023 * none
1024 **/
1025 static void ipr_send_hcam(struct ipr_ioa_cfg *ioa_cfg, u8 type,
1026 struct ipr_hostrcb *hostrcb)
1027 {
1028 struct ipr_cmnd *ipr_cmd;
1029 struct ipr_ioarcb *ioarcb;
1030
1031 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
1032 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
1033 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
1034 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_pending_q);
1035
1036 ipr_cmd->u.hostrcb = hostrcb;
1037 ioarcb = &ipr_cmd->ioarcb;
1038
1039 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
1040 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_HCAM;
1041 ioarcb->cmd_pkt.cdb[0] = IPR_HOST_CONTROLLED_ASYNC;
1042 ioarcb->cmd_pkt.cdb[1] = type;
1043 ioarcb->cmd_pkt.cdb[7] = (sizeof(hostrcb->hcam) >> 8) & 0xff;
1044 ioarcb->cmd_pkt.cdb[8] = sizeof(hostrcb->hcam) & 0xff;
1045
1046 ipr_init_ioadl(ipr_cmd, hostrcb->hostrcb_dma,
1047 sizeof(hostrcb->hcam), IPR_IOADL_FLAGS_READ_LAST);
1048
1049 if (type == IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE)
1050 ipr_cmd->done = ipr_process_ccn;
1051 else
1052 ipr_cmd->done = ipr_process_error;
1053
1054 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_IOA_RES_ADDR);
1055
1056 ipr_send_command(ipr_cmd);
1057 } else {
1058 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
1059 }
1060 }
1061
1062 /**
1063 * ipr_update_ata_class - Update the ata class in the resource entry
1064 * @res: resource entry struct
1065 * @proto: cfgte device bus protocol value
1066 *
1067 * Return value:
1068 * none
1069 **/
1070 static void ipr_update_ata_class(struct ipr_resource_entry *res, unsigned int proto)
1071 {
1072 switch (proto) {
1073 case IPR_PROTO_SATA:
1074 case IPR_PROTO_SAS_STP:
1075 res->ata_class = ATA_DEV_ATA;
1076 break;
1077 case IPR_PROTO_SATA_ATAPI:
1078 case IPR_PROTO_SAS_STP_ATAPI:
1079 res->ata_class = ATA_DEV_ATAPI;
1080 break;
1081 default:
1082 res->ata_class = ATA_DEV_UNKNOWN;
1083 break;
1084 };
1085 }
1086
1087 /**
1088 * ipr_init_res_entry - Initialize a resource entry struct.
1089 * @res: resource entry struct
1090 * @cfgtew: config table entry wrapper struct
1091 *
1092 * Return value:
1093 * none
1094 **/
1095 static void ipr_init_res_entry(struct ipr_resource_entry *res,
1096 struct ipr_config_table_entry_wrapper *cfgtew)
1097 {
1098 int found = 0;
1099 unsigned int proto;
1100 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1101 struct ipr_resource_entry *gscsi_res = NULL;
1102
1103 res->needs_sync_complete = 0;
1104 res->in_erp = 0;
1105 res->add_to_ml = 0;
1106 res->del_from_ml = 0;
1107 res->resetting_device = 0;
1108 res->sdev = NULL;
1109 res->sata_port = NULL;
1110
1111 if (ioa_cfg->sis64) {
1112 proto = cfgtew->u.cfgte64->proto;
1113 res->res_flags = cfgtew->u.cfgte64->res_flags;
1114 res->qmodel = IPR_QUEUEING_MODEL64(res);
1115 res->type = cfgtew->u.cfgte64->res_type;
1116
1117 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1118 sizeof(res->res_path));
1119
1120 res->bus = 0;
1121 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1122 sizeof(res->dev_lun.scsi_lun));
1123 res->lun = scsilun_to_int(&res->dev_lun);
1124
1125 if (res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1126 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue) {
1127 if (gscsi_res->dev_id == cfgtew->u.cfgte64->dev_id) {
1128 found = 1;
1129 res->target = gscsi_res->target;
1130 break;
1131 }
1132 }
1133 if (!found) {
1134 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1135 ioa_cfg->max_devs_supported);
1136 set_bit(res->target, ioa_cfg->target_ids);
1137 }
1138 } else if (res->type == IPR_RES_TYPE_IOAFP) {
1139 res->bus = IPR_IOAFP_VIRTUAL_BUS;
1140 res->target = 0;
1141 } else if (res->type == IPR_RES_TYPE_ARRAY) {
1142 res->bus = IPR_ARRAY_VIRTUAL_BUS;
1143 res->target = find_first_zero_bit(ioa_cfg->array_ids,
1144 ioa_cfg->max_devs_supported);
1145 set_bit(res->target, ioa_cfg->array_ids);
1146 } else if (res->type == IPR_RES_TYPE_VOLUME_SET) {
1147 res->bus = IPR_VSET_VIRTUAL_BUS;
1148 res->target = find_first_zero_bit(ioa_cfg->vset_ids,
1149 ioa_cfg->max_devs_supported);
1150 set_bit(res->target, ioa_cfg->vset_ids);
1151 } else {
1152 res->target = find_first_zero_bit(ioa_cfg->target_ids,
1153 ioa_cfg->max_devs_supported);
1154 set_bit(res->target, ioa_cfg->target_ids);
1155 }
1156 } else {
1157 proto = cfgtew->u.cfgte->proto;
1158 res->qmodel = IPR_QUEUEING_MODEL(res);
1159 res->flags = cfgtew->u.cfgte->flags;
1160 if (res->flags & IPR_IS_IOA_RESOURCE)
1161 res->type = IPR_RES_TYPE_IOAFP;
1162 else
1163 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1164
1165 res->bus = cfgtew->u.cfgte->res_addr.bus;
1166 res->target = cfgtew->u.cfgte->res_addr.target;
1167 res->lun = cfgtew->u.cfgte->res_addr.lun;
1168 res->lun_wwn = get_unaligned_be64(cfgtew->u.cfgte->lun_wwn);
1169 }
1170
1171 ipr_update_ata_class(res, proto);
1172 }
1173
1174 /**
1175 * ipr_is_same_device - Determine if two devices are the same.
1176 * @res: resource entry struct
1177 * @cfgtew: config table entry wrapper struct
1178 *
1179 * Return value:
1180 * 1 if the devices are the same / 0 otherwise
1181 **/
1182 static int ipr_is_same_device(struct ipr_resource_entry *res,
1183 struct ipr_config_table_entry_wrapper *cfgtew)
1184 {
1185 if (res->ioa_cfg->sis64) {
1186 if (!memcmp(&res->dev_id, &cfgtew->u.cfgte64->dev_id,
1187 sizeof(cfgtew->u.cfgte64->dev_id)) &&
1188 !memcmp(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1189 sizeof(cfgtew->u.cfgte64->lun))) {
1190 return 1;
1191 }
1192 } else {
1193 if (res->bus == cfgtew->u.cfgte->res_addr.bus &&
1194 res->target == cfgtew->u.cfgte->res_addr.target &&
1195 res->lun == cfgtew->u.cfgte->res_addr.lun)
1196 return 1;
1197 }
1198
1199 return 0;
1200 }
1201
1202 /**
1203 * __ipr_format_res_path - Format the resource path for printing.
1204 * @res_path: resource path
1205 * @buf: buffer
1206 * @len: length of buffer provided
1207 *
1208 * Return value:
1209 * pointer to buffer
1210 **/
1211 static char *__ipr_format_res_path(u8 *res_path, char *buffer, int len)
1212 {
1213 int i;
1214 char *p = buffer;
1215
1216 *p = '\0';
1217 p += snprintf(p, buffer + len - p, "%02X", res_path[0]);
1218 for (i = 1; res_path[i] != 0xff && ((i * 3) < len); i++)
1219 p += snprintf(p, buffer + len - p, "-%02X", res_path[i]);
1220
1221 return buffer;
1222 }
1223
1224 /**
1225 * ipr_format_res_path - Format the resource path for printing.
1226 * @ioa_cfg: ioa config struct
1227 * @res_path: resource path
1228 * @buf: buffer
1229 * @len: length of buffer provided
1230 *
1231 * Return value:
1232 * pointer to buffer
1233 **/
1234 static char *ipr_format_res_path(struct ipr_ioa_cfg *ioa_cfg,
1235 u8 *res_path, char *buffer, int len)
1236 {
1237 char *p = buffer;
1238
1239 *p = '\0';
1240 p += snprintf(p, buffer + len - p, "%d/", ioa_cfg->host->host_no);
1241 __ipr_format_res_path(res_path, p, len - (buffer - p));
1242 return buffer;
1243 }
1244
1245 /**
1246 * ipr_update_res_entry - Update the resource entry.
1247 * @res: resource entry struct
1248 * @cfgtew: config table entry wrapper struct
1249 *
1250 * Return value:
1251 * none
1252 **/
1253 static void ipr_update_res_entry(struct ipr_resource_entry *res,
1254 struct ipr_config_table_entry_wrapper *cfgtew)
1255 {
1256 char buffer[IPR_MAX_RES_PATH_LENGTH];
1257 unsigned int proto;
1258 int new_path = 0;
1259
1260 if (res->ioa_cfg->sis64) {
1261 res->flags = cfgtew->u.cfgte64->flags;
1262 res->res_flags = cfgtew->u.cfgte64->res_flags;
1263 res->type = cfgtew->u.cfgte64->res_type;
1264
1265 memcpy(&res->std_inq_data, &cfgtew->u.cfgte64->std_inq_data,
1266 sizeof(struct ipr_std_inq_data));
1267
1268 res->qmodel = IPR_QUEUEING_MODEL64(res);
1269 proto = cfgtew->u.cfgte64->proto;
1270 res->res_handle = cfgtew->u.cfgte64->res_handle;
1271 res->dev_id = cfgtew->u.cfgte64->dev_id;
1272
1273 memcpy(&res->dev_lun.scsi_lun, &cfgtew->u.cfgte64->lun,
1274 sizeof(res->dev_lun.scsi_lun));
1275
1276 if (memcmp(res->res_path, &cfgtew->u.cfgte64->res_path,
1277 sizeof(res->res_path))) {
1278 memcpy(res->res_path, &cfgtew->u.cfgte64->res_path,
1279 sizeof(res->res_path));
1280 new_path = 1;
1281 }
1282
1283 if (res->sdev && new_path)
1284 sdev_printk(KERN_INFO, res->sdev, "Resource path: %s\n",
1285 ipr_format_res_path(res->ioa_cfg,
1286 res->res_path, buffer, sizeof(buffer)));
1287 } else {
1288 res->flags = cfgtew->u.cfgte->flags;
1289 if (res->flags & IPR_IS_IOA_RESOURCE)
1290 res->type = IPR_RES_TYPE_IOAFP;
1291 else
1292 res->type = cfgtew->u.cfgte->rsvd_subtype & 0x0f;
1293
1294 memcpy(&res->std_inq_data, &cfgtew->u.cfgte->std_inq_data,
1295 sizeof(struct ipr_std_inq_data));
1296
1297 res->qmodel = IPR_QUEUEING_MODEL(res);
1298 proto = cfgtew->u.cfgte->proto;
1299 res->res_handle = cfgtew->u.cfgte->res_handle;
1300 }
1301
1302 ipr_update_ata_class(res, proto);
1303 }
1304
1305 /**
1306 * ipr_clear_res_target - Clear the bit in the bit map representing the target
1307 * for the resource.
1308 * @res: resource entry struct
1309 * @cfgtew: config table entry wrapper struct
1310 *
1311 * Return value:
1312 * none
1313 **/
1314 static void ipr_clear_res_target(struct ipr_resource_entry *res)
1315 {
1316 struct ipr_resource_entry *gscsi_res = NULL;
1317 struct ipr_ioa_cfg *ioa_cfg = res->ioa_cfg;
1318
1319 if (!ioa_cfg->sis64)
1320 return;
1321
1322 if (res->bus == IPR_ARRAY_VIRTUAL_BUS)
1323 clear_bit(res->target, ioa_cfg->array_ids);
1324 else if (res->bus == IPR_VSET_VIRTUAL_BUS)
1325 clear_bit(res->target, ioa_cfg->vset_ids);
1326 else if (res->bus == 0 && res->type == IPR_RES_TYPE_GENERIC_SCSI) {
1327 list_for_each_entry(gscsi_res, &ioa_cfg->used_res_q, queue)
1328 if (gscsi_res->dev_id == res->dev_id && gscsi_res != res)
1329 return;
1330 clear_bit(res->target, ioa_cfg->target_ids);
1331
1332 } else if (res->bus == 0)
1333 clear_bit(res->target, ioa_cfg->target_ids);
1334 }
1335
1336 /**
1337 * ipr_handle_config_change - Handle a config change from the adapter
1338 * @ioa_cfg: ioa config struct
1339 * @hostrcb: hostrcb
1340 *
1341 * Return value:
1342 * none
1343 **/
1344 static void ipr_handle_config_change(struct ipr_ioa_cfg *ioa_cfg,
1345 struct ipr_hostrcb *hostrcb)
1346 {
1347 struct ipr_resource_entry *res = NULL;
1348 struct ipr_config_table_entry_wrapper cfgtew;
1349 __be32 cc_res_handle;
1350
1351 u32 is_ndn = 1;
1352
1353 if (ioa_cfg->sis64) {
1354 cfgtew.u.cfgte64 = &hostrcb->hcam.u.ccn.u.cfgte64;
1355 cc_res_handle = cfgtew.u.cfgte64->res_handle;
1356 } else {
1357 cfgtew.u.cfgte = &hostrcb->hcam.u.ccn.u.cfgte;
1358 cc_res_handle = cfgtew.u.cfgte->res_handle;
1359 }
1360
1361 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
1362 if (res->res_handle == cc_res_handle) {
1363 is_ndn = 0;
1364 break;
1365 }
1366 }
1367
1368 if (is_ndn) {
1369 if (list_empty(&ioa_cfg->free_res_q)) {
1370 ipr_send_hcam(ioa_cfg,
1371 IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE,
1372 hostrcb);
1373 return;
1374 }
1375
1376 res = list_entry(ioa_cfg->free_res_q.next,
1377 struct ipr_resource_entry, queue);
1378
1379 list_del(&res->queue);
1380 ipr_init_res_entry(res, &cfgtew);
1381 list_add_tail(&res->queue, &ioa_cfg->used_res_q);
1382 }
1383
1384 ipr_update_res_entry(res, &cfgtew);
1385
1386 if (hostrcb->hcam.notify_type == IPR_HOST_RCB_NOTIF_TYPE_REM_ENTRY) {
1387 if (res->sdev) {
1388 res->del_from_ml = 1;
1389 res->res_handle = IPR_INVALID_RES_HANDLE;
1390 if (ioa_cfg->allow_ml_add_del)
1391 schedule_work(&ioa_cfg->work_q);
1392 } else {
1393 ipr_clear_res_target(res);
1394 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
1395 }
1396 } else if (!res->sdev || res->del_from_ml) {
1397 res->add_to_ml = 1;
1398 if (ioa_cfg->allow_ml_add_del)
1399 schedule_work(&ioa_cfg->work_q);
1400 }
1401
1402 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1403 }
1404
1405 /**
1406 * ipr_process_ccn - Op done function for a CCN.
1407 * @ipr_cmd: ipr command struct
1408 *
1409 * This function is the op done function for a configuration
1410 * change notification host controlled async from the adapter.
1411 *
1412 * Return value:
1413 * none
1414 **/
1415 static void ipr_process_ccn(struct ipr_cmnd *ipr_cmd)
1416 {
1417 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
1418 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
1419 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
1420
1421 list_del(&hostrcb->queue);
1422 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
1423
1424 if (ioasc) {
1425 if (ioasc != IPR_IOASC_IOA_WAS_RESET)
1426 dev_err(&ioa_cfg->pdev->dev,
1427 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
1428
1429 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
1430 } else {
1431 ipr_handle_config_change(ioa_cfg, hostrcb);
1432 }
1433 }
1434
1435 /**
1436 * strip_and_pad_whitespace - Strip and pad trailing whitespace.
1437 * @i: index into buffer
1438 * @buf: string to modify
1439 *
1440 * This function will strip all trailing whitespace, pad the end
1441 * of the string with a single space, and NULL terminate the string.
1442 *
1443 * Return value:
1444 * new length of string
1445 **/
1446 static int strip_and_pad_whitespace(int i, char *buf)
1447 {
1448 while (i && buf[i] == ' ')
1449 i--;
1450 buf[i+1] = ' ';
1451 buf[i+2] = '\0';
1452 return i + 2;
1453 }
1454
1455 /**
1456 * ipr_log_vpd_compact - Log the passed extended VPD compactly.
1457 * @prefix: string to print at start of printk
1458 * @hostrcb: hostrcb pointer
1459 * @vpd: vendor/product id/sn struct
1460 *
1461 * Return value:
1462 * none
1463 **/
1464 static void ipr_log_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1465 struct ipr_vpd *vpd)
1466 {
1467 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN + IPR_SERIAL_NUM_LEN + 3];
1468 int i = 0;
1469
1470 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1471 i = strip_and_pad_whitespace(IPR_VENDOR_ID_LEN - 1, buffer);
1472
1473 memcpy(&buffer[i], vpd->vpids.product_id, IPR_PROD_ID_LEN);
1474 i = strip_and_pad_whitespace(i + IPR_PROD_ID_LEN - 1, buffer);
1475
1476 memcpy(&buffer[i], vpd->sn, IPR_SERIAL_NUM_LEN);
1477 buffer[IPR_SERIAL_NUM_LEN + i] = '\0';
1478
1479 ipr_hcam_err(hostrcb, "%s VPID/SN: %s\n", prefix, buffer);
1480 }
1481
1482 /**
1483 * ipr_log_vpd - Log the passed VPD to the error log.
1484 * @vpd: vendor/product id/sn struct
1485 *
1486 * Return value:
1487 * none
1488 **/
1489 static void ipr_log_vpd(struct ipr_vpd *vpd)
1490 {
1491 char buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN
1492 + IPR_SERIAL_NUM_LEN];
1493
1494 memcpy(buffer, vpd->vpids.vendor_id, IPR_VENDOR_ID_LEN);
1495 memcpy(buffer + IPR_VENDOR_ID_LEN, vpd->vpids.product_id,
1496 IPR_PROD_ID_LEN);
1497 buffer[IPR_VENDOR_ID_LEN + IPR_PROD_ID_LEN] = '\0';
1498 ipr_err("Vendor/Product ID: %s\n", buffer);
1499
1500 memcpy(buffer, vpd->sn, IPR_SERIAL_NUM_LEN);
1501 buffer[IPR_SERIAL_NUM_LEN] = '\0';
1502 ipr_err(" Serial Number: %s\n", buffer);
1503 }
1504
1505 /**
1506 * ipr_log_ext_vpd_compact - Log the passed extended VPD compactly.
1507 * @prefix: string to print at start of printk
1508 * @hostrcb: hostrcb pointer
1509 * @vpd: vendor/product id/sn/wwn struct
1510 *
1511 * Return value:
1512 * none
1513 **/
1514 static void ipr_log_ext_vpd_compact(char *prefix, struct ipr_hostrcb *hostrcb,
1515 struct ipr_ext_vpd *vpd)
1516 {
1517 ipr_log_vpd_compact(prefix, hostrcb, &vpd->vpd);
1518 ipr_hcam_err(hostrcb, "%s WWN: %08X%08X\n", prefix,
1519 be32_to_cpu(vpd->wwid[0]), be32_to_cpu(vpd->wwid[1]));
1520 }
1521
1522 /**
1523 * ipr_log_ext_vpd - Log the passed extended VPD to the error log.
1524 * @vpd: vendor/product id/sn/wwn struct
1525 *
1526 * Return value:
1527 * none
1528 **/
1529 static void ipr_log_ext_vpd(struct ipr_ext_vpd *vpd)
1530 {
1531 ipr_log_vpd(&vpd->vpd);
1532 ipr_err(" WWN: %08X%08X\n", be32_to_cpu(vpd->wwid[0]),
1533 be32_to_cpu(vpd->wwid[1]));
1534 }
1535
1536 /**
1537 * ipr_log_enhanced_cache_error - Log a cache error.
1538 * @ioa_cfg: ioa config struct
1539 * @hostrcb: hostrcb struct
1540 *
1541 * Return value:
1542 * none
1543 **/
1544 static void ipr_log_enhanced_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1545 struct ipr_hostrcb *hostrcb)
1546 {
1547 struct ipr_hostrcb_type_12_error *error;
1548
1549 if (ioa_cfg->sis64)
1550 error = &hostrcb->hcam.u.error64.u.type_12_error;
1551 else
1552 error = &hostrcb->hcam.u.error.u.type_12_error;
1553
1554 ipr_err("-----Current Configuration-----\n");
1555 ipr_err("Cache Directory Card Information:\n");
1556 ipr_log_ext_vpd(&error->ioa_vpd);
1557 ipr_err("Adapter Card Information:\n");
1558 ipr_log_ext_vpd(&error->cfc_vpd);
1559
1560 ipr_err("-----Expected Configuration-----\n");
1561 ipr_err("Cache Directory Card Information:\n");
1562 ipr_log_ext_vpd(&error->ioa_last_attached_to_cfc_vpd);
1563 ipr_err("Adapter Card Information:\n");
1564 ipr_log_ext_vpd(&error->cfc_last_attached_to_ioa_vpd);
1565
1566 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1567 be32_to_cpu(error->ioa_data[0]),
1568 be32_to_cpu(error->ioa_data[1]),
1569 be32_to_cpu(error->ioa_data[2]));
1570 }
1571
1572 /**
1573 * ipr_log_cache_error - Log a cache error.
1574 * @ioa_cfg: ioa config struct
1575 * @hostrcb: hostrcb struct
1576 *
1577 * Return value:
1578 * none
1579 **/
1580 static void ipr_log_cache_error(struct ipr_ioa_cfg *ioa_cfg,
1581 struct ipr_hostrcb *hostrcb)
1582 {
1583 struct ipr_hostrcb_type_02_error *error =
1584 &hostrcb->hcam.u.error.u.type_02_error;
1585
1586 ipr_err("-----Current Configuration-----\n");
1587 ipr_err("Cache Directory Card Information:\n");
1588 ipr_log_vpd(&error->ioa_vpd);
1589 ipr_err("Adapter Card Information:\n");
1590 ipr_log_vpd(&error->cfc_vpd);
1591
1592 ipr_err("-----Expected Configuration-----\n");
1593 ipr_err("Cache Directory Card Information:\n");
1594 ipr_log_vpd(&error->ioa_last_attached_to_cfc_vpd);
1595 ipr_err("Adapter Card Information:\n");
1596 ipr_log_vpd(&error->cfc_last_attached_to_ioa_vpd);
1597
1598 ipr_err("Additional IOA Data: %08X %08X %08X\n",
1599 be32_to_cpu(error->ioa_data[0]),
1600 be32_to_cpu(error->ioa_data[1]),
1601 be32_to_cpu(error->ioa_data[2]));
1602 }
1603
1604 /**
1605 * ipr_log_enhanced_config_error - Log a configuration error.
1606 * @ioa_cfg: ioa config struct
1607 * @hostrcb: hostrcb struct
1608 *
1609 * Return value:
1610 * none
1611 **/
1612 static void ipr_log_enhanced_config_error(struct ipr_ioa_cfg *ioa_cfg,
1613 struct ipr_hostrcb *hostrcb)
1614 {
1615 int errors_logged, i;
1616 struct ipr_hostrcb_device_data_entry_enhanced *dev_entry;
1617 struct ipr_hostrcb_type_13_error *error;
1618
1619 error = &hostrcb->hcam.u.error.u.type_13_error;
1620 errors_logged = be32_to_cpu(error->errors_logged);
1621
1622 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1623 be32_to_cpu(error->errors_detected), errors_logged);
1624
1625 dev_entry = error->dev;
1626
1627 for (i = 0; i < errors_logged; i++, dev_entry++) {
1628 ipr_err_separator;
1629
1630 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1631 ipr_log_ext_vpd(&dev_entry->vpd);
1632
1633 ipr_err("-----New Device Information-----\n");
1634 ipr_log_ext_vpd(&dev_entry->new_vpd);
1635
1636 ipr_err("Cache Directory Card Information:\n");
1637 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1638
1639 ipr_err("Adapter Card Information:\n");
1640 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1641 }
1642 }
1643
1644 /**
1645 * ipr_log_sis64_config_error - Log a device error.
1646 * @ioa_cfg: ioa config struct
1647 * @hostrcb: hostrcb struct
1648 *
1649 * Return value:
1650 * none
1651 **/
1652 static void ipr_log_sis64_config_error(struct ipr_ioa_cfg *ioa_cfg,
1653 struct ipr_hostrcb *hostrcb)
1654 {
1655 int errors_logged, i;
1656 struct ipr_hostrcb64_device_data_entry_enhanced *dev_entry;
1657 struct ipr_hostrcb_type_23_error *error;
1658 char buffer[IPR_MAX_RES_PATH_LENGTH];
1659
1660 error = &hostrcb->hcam.u.error64.u.type_23_error;
1661 errors_logged = be32_to_cpu(error->errors_logged);
1662
1663 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1664 be32_to_cpu(error->errors_detected), errors_logged);
1665
1666 dev_entry = error->dev;
1667
1668 for (i = 0; i < errors_logged; i++, dev_entry++) {
1669 ipr_err_separator;
1670
1671 ipr_err("Device %d : %s", i + 1,
1672 __ipr_format_res_path(dev_entry->res_path,
1673 buffer, sizeof(buffer)));
1674 ipr_log_ext_vpd(&dev_entry->vpd);
1675
1676 ipr_err("-----New Device Information-----\n");
1677 ipr_log_ext_vpd(&dev_entry->new_vpd);
1678
1679 ipr_err("Cache Directory Card Information:\n");
1680 ipr_log_ext_vpd(&dev_entry->ioa_last_with_dev_vpd);
1681
1682 ipr_err("Adapter Card Information:\n");
1683 ipr_log_ext_vpd(&dev_entry->cfc_last_with_dev_vpd);
1684 }
1685 }
1686
1687 /**
1688 * ipr_log_config_error - Log a configuration error.
1689 * @ioa_cfg: ioa config struct
1690 * @hostrcb: hostrcb struct
1691 *
1692 * Return value:
1693 * none
1694 **/
1695 static void ipr_log_config_error(struct ipr_ioa_cfg *ioa_cfg,
1696 struct ipr_hostrcb *hostrcb)
1697 {
1698 int errors_logged, i;
1699 struct ipr_hostrcb_device_data_entry *dev_entry;
1700 struct ipr_hostrcb_type_03_error *error;
1701
1702 error = &hostrcb->hcam.u.error.u.type_03_error;
1703 errors_logged = be32_to_cpu(error->errors_logged);
1704
1705 ipr_err("Device Errors Detected/Logged: %d/%d\n",
1706 be32_to_cpu(error->errors_detected), errors_logged);
1707
1708 dev_entry = error->dev;
1709
1710 for (i = 0; i < errors_logged; i++, dev_entry++) {
1711 ipr_err_separator;
1712
1713 ipr_phys_res_err(ioa_cfg, dev_entry->dev_res_addr, "Device %d", i + 1);
1714 ipr_log_vpd(&dev_entry->vpd);
1715
1716 ipr_err("-----New Device Information-----\n");
1717 ipr_log_vpd(&dev_entry->new_vpd);
1718
1719 ipr_err("Cache Directory Card Information:\n");
1720 ipr_log_vpd(&dev_entry->ioa_last_with_dev_vpd);
1721
1722 ipr_err("Adapter Card Information:\n");
1723 ipr_log_vpd(&dev_entry->cfc_last_with_dev_vpd);
1724
1725 ipr_err("Additional IOA Data: %08X %08X %08X %08X %08X\n",
1726 be32_to_cpu(dev_entry->ioa_data[0]),
1727 be32_to_cpu(dev_entry->ioa_data[1]),
1728 be32_to_cpu(dev_entry->ioa_data[2]),
1729 be32_to_cpu(dev_entry->ioa_data[3]),
1730 be32_to_cpu(dev_entry->ioa_data[4]));
1731 }
1732 }
1733
1734 /**
1735 * ipr_log_enhanced_array_error - Log an array configuration error.
1736 * @ioa_cfg: ioa config struct
1737 * @hostrcb: hostrcb struct
1738 *
1739 * Return value:
1740 * none
1741 **/
1742 static void ipr_log_enhanced_array_error(struct ipr_ioa_cfg *ioa_cfg,
1743 struct ipr_hostrcb *hostrcb)
1744 {
1745 int i, num_entries;
1746 struct ipr_hostrcb_type_14_error *error;
1747 struct ipr_hostrcb_array_data_entry_enhanced *array_entry;
1748 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1749
1750 error = &hostrcb->hcam.u.error.u.type_14_error;
1751
1752 ipr_err_separator;
1753
1754 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1755 error->protection_level,
1756 ioa_cfg->host->host_no,
1757 error->last_func_vset_res_addr.bus,
1758 error->last_func_vset_res_addr.target,
1759 error->last_func_vset_res_addr.lun);
1760
1761 ipr_err_separator;
1762
1763 array_entry = error->array_member;
1764 num_entries = min_t(u32, be32_to_cpu(error->num_entries),
1765 ARRAY_SIZE(error->array_member));
1766
1767 for (i = 0; i < num_entries; i++, array_entry++) {
1768 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1769 continue;
1770
1771 if (be32_to_cpu(error->exposed_mode_adn) == i)
1772 ipr_err("Exposed Array Member %d:\n", i);
1773 else
1774 ipr_err("Array Member %d:\n", i);
1775
1776 ipr_log_ext_vpd(&array_entry->vpd);
1777 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1778 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1779 "Expected Location");
1780
1781 ipr_err_separator;
1782 }
1783 }
1784
1785 /**
1786 * ipr_log_array_error - Log an array configuration error.
1787 * @ioa_cfg: ioa config struct
1788 * @hostrcb: hostrcb struct
1789 *
1790 * Return value:
1791 * none
1792 **/
1793 static void ipr_log_array_error(struct ipr_ioa_cfg *ioa_cfg,
1794 struct ipr_hostrcb *hostrcb)
1795 {
1796 int i;
1797 struct ipr_hostrcb_type_04_error *error;
1798 struct ipr_hostrcb_array_data_entry *array_entry;
1799 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
1800
1801 error = &hostrcb->hcam.u.error.u.type_04_error;
1802
1803 ipr_err_separator;
1804
1805 ipr_err("RAID %s Array Configuration: %d:%d:%d:%d\n",
1806 error->protection_level,
1807 ioa_cfg->host->host_no,
1808 error->last_func_vset_res_addr.bus,
1809 error->last_func_vset_res_addr.target,
1810 error->last_func_vset_res_addr.lun);
1811
1812 ipr_err_separator;
1813
1814 array_entry = error->array_member;
1815
1816 for (i = 0; i < 18; i++) {
1817 if (!memcmp(array_entry->vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
1818 continue;
1819
1820 if (be32_to_cpu(error->exposed_mode_adn) == i)
1821 ipr_err("Exposed Array Member %d:\n", i);
1822 else
1823 ipr_err("Array Member %d:\n", i);
1824
1825 ipr_log_vpd(&array_entry->vpd);
1826
1827 ipr_phys_res_err(ioa_cfg, array_entry->dev_res_addr, "Current Location");
1828 ipr_phys_res_err(ioa_cfg, array_entry->expected_dev_res_addr,
1829 "Expected Location");
1830
1831 ipr_err_separator;
1832
1833 if (i == 9)
1834 array_entry = error->array_member2;
1835 else
1836 array_entry++;
1837 }
1838 }
1839
1840 /**
1841 * ipr_log_hex_data - Log additional hex IOA error data.
1842 * @ioa_cfg: ioa config struct
1843 * @data: IOA error data
1844 * @len: data length
1845 *
1846 * Return value:
1847 * none
1848 **/
1849 static void ipr_log_hex_data(struct ipr_ioa_cfg *ioa_cfg, u32 *data, int len)
1850 {
1851 int i;
1852
1853 if (len == 0)
1854 return;
1855
1856 if (ioa_cfg->log_level <= IPR_DEFAULT_LOG_LEVEL)
1857 len = min_t(int, len, IPR_DEFAULT_MAX_ERROR_DUMP);
1858
1859 for (i = 0; i < len / 4; i += 4) {
1860 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
1861 be32_to_cpu(data[i]),
1862 be32_to_cpu(data[i+1]),
1863 be32_to_cpu(data[i+2]),
1864 be32_to_cpu(data[i+3]));
1865 }
1866 }
1867
1868 /**
1869 * ipr_log_enhanced_dual_ioa_error - Log an enhanced dual adapter error.
1870 * @ioa_cfg: ioa config struct
1871 * @hostrcb: hostrcb struct
1872 *
1873 * Return value:
1874 * none
1875 **/
1876 static void ipr_log_enhanced_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1877 struct ipr_hostrcb *hostrcb)
1878 {
1879 struct ipr_hostrcb_type_17_error *error;
1880
1881 if (ioa_cfg->sis64)
1882 error = &hostrcb->hcam.u.error64.u.type_17_error;
1883 else
1884 error = &hostrcb->hcam.u.error.u.type_17_error;
1885
1886 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1887 strim(error->failure_reason);
1888
1889 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1890 be32_to_cpu(hostrcb->hcam.u.error.prc));
1891 ipr_log_ext_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1892 ipr_log_hex_data(ioa_cfg, error->data,
1893 be32_to_cpu(hostrcb->hcam.length) -
1894 (offsetof(struct ipr_hostrcb_error, u) +
1895 offsetof(struct ipr_hostrcb_type_17_error, data)));
1896 }
1897
1898 /**
1899 * ipr_log_dual_ioa_error - Log a dual adapter error.
1900 * @ioa_cfg: ioa config struct
1901 * @hostrcb: hostrcb struct
1902 *
1903 * Return value:
1904 * none
1905 **/
1906 static void ipr_log_dual_ioa_error(struct ipr_ioa_cfg *ioa_cfg,
1907 struct ipr_hostrcb *hostrcb)
1908 {
1909 struct ipr_hostrcb_type_07_error *error;
1910
1911 error = &hostrcb->hcam.u.error.u.type_07_error;
1912 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
1913 strim(error->failure_reason);
1914
1915 ipr_hcam_err(hostrcb, "%s [PRC: %08X]\n", error->failure_reason,
1916 be32_to_cpu(hostrcb->hcam.u.error.prc));
1917 ipr_log_vpd_compact("Remote IOA", hostrcb, &error->vpd);
1918 ipr_log_hex_data(ioa_cfg, error->data,
1919 be32_to_cpu(hostrcb->hcam.length) -
1920 (offsetof(struct ipr_hostrcb_error, u) +
1921 offsetof(struct ipr_hostrcb_type_07_error, data)));
1922 }
1923
1924 static const struct {
1925 u8 active;
1926 char *desc;
1927 } path_active_desc[] = {
1928 { IPR_PATH_NO_INFO, "Path" },
1929 { IPR_PATH_ACTIVE, "Active path" },
1930 { IPR_PATH_NOT_ACTIVE, "Inactive path" }
1931 };
1932
1933 static const struct {
1934 u8 state;
1935 char *desc;
1936 } path_state_desc[] = {
1937 { IPR_PATH_STATE_NO_INFO, "has no path state information available" },
1938 { IPR_PATH_HEALTHY, "is healthy" },
1939 { IPR_PATH_DEGRADED, "is degraded" },
1940 { IPR_PATH_FAILED, "is failed" }
1941 };
1942
1943 /**
1944 * ipr_log_fabric_path - Log a fabric path error
1945 * @hostrcb: hostrcb struct
1946 * @fabric: fabric descriptor
1947 *
1948 * Return value:
1949 * none
1950 **/
1951 static void ipr_log_fabric_path(struct ipr_hostrcb *hostrcb,
1952 struct ipr_hostrcb_fabric_desc *fabric)
1953 {
1954 int i, j;
1955 u8 path_state = fabric->path_state;
1956 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
1957 u8 state = path_state & IPR_PATH_STATE_MASK;
1958
1959 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
1960 if (path_active_desc[i].active != active)
1961 continue;
1962
1963 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
1964 if (path_state_desc[j].state != state)
1965 continue;
1966
1967 if (fabric->cascaded_expander == 0xff && fabric->phy == 0xff) {
1968 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d\n",
1969 path_active_desc[i].desc, path_state_desc[j].desc,
1970 fabric->ioa_port);
1971 } else if (fabric->cascaded_expander == 0xff) {
1972 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Phy=%d\n",
1973 path_active_desc[i].desc, path_state_desc[j].desc,
1974 fabric->ioa_port, fabric->phy);
1975 } else if (fabric->phy == 0xff) {
1976 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d\n",
1977 path_active_desc[i].desc, path_state_desc[j].desc,
1978 fabric->ioa_port, fabric->cascaded_expander);
1979 } else {
1980 ipr_hcam_err(hostrcb, "%s %s: IOA Port=%d, Cascade=%d, Phy=%d\n",
1981 path_active_desc[i].desc, path_state_desc[j].desc,
1982 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1983 }
1984 return;
1985 }
1986 }
1987
1988 ipr_err("Path state=%02X IOA Port=%d Cascade=%d Phy=%d\n", path_state,
1989 fabric->ioa_port, fabric->cascaded_expander, fabric->phy);
1990 }
1991
1992 /**
1993 * ipr_log64_fabric_path - Log a fabric path error
1994 * @hostrcb: hostrcb struct
1995 * @fabric: fabric descriptor
1996 *
1997 * Return value:
1998 * none
1999 **/
2000 static void ipr_log64_fabric_path(struct ipr_hostrcb *hostrcb,
2001 struct ipr_hostrcb64_fabric_desc *fabric)
2002 {
2003 int i, j;
2004 u8 path_state = fabric->path_state;
2005 u8 active = path_state & IPR_PATH_ACTIVE_MASK;
2006 u8 state = path_state & IPR_PATH_STATE_MASK;
2007 char buffer[IPR_MAX_RES_PATH_LENGTH];
2008
2009 for (i = 0; i < ARRAY_SIZE(path_active_desc); i++) {
2010 if (path_active_desc[i].active != active)
2011 continue;
2012
2013 for (j = 0; j < ARRAY_SIZE(path_state_desc); j++) {
2014 if (path_state_desc[j].state != state)
2015 continue;
2016
2017 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s\n",
2018 path_active_desc[i].desc, path_state_desc[j].desc,
2019 ipr_format_res_path(hostrcb->ioa_cfg,
2020 fabric->res_path,
2021 buffer, sizeof(buffer)));
2022 return;
2023 }
2024 }
2025
2026 ipr_err("Path state=%02X Resource Path=%s\n", path_state,
2027 ipr_format_res_path(hostrcb->ioa_cfg, fabric->res_path,
2028 buffer, sizeof(buffer)));
2029 }
2030
2031 static const struct {
2032 u8 type;
2033 char *desc;
2034 } path_type_desc[] = {
2035 { IPR_PATH_CFG_IOA_PORT, "IOA port" },
2036 { IPR_PATH_CFG_EXP_PORT, "Expander port" },
2037 { IPR_PATH_CFG_DEVICE_PORT, "Device port" },
2038 { IPR_PATH_CFG_DEVICE_LUN, "Device LUN" }
2039 };
2040
2041 static const struct {
2042 u8 status;
2043 char *desc;
2044 } path_status_desc[] = {
2045 { IPR_PATH_CFG_NO_PROB, "Functional" },
2046 { IPR_PATH_CFG_DEGRADED, "Degraded" },
2047 { IPR_PATH_CFG_FAILED, "Failed" },
2048 { IPR_PATH_CFG_SUSPECT, "Suspect" },
2049 { IPR_PATH_NOT_DETECTED, "Missing" },
2050 { IPR_PATH_INCORRECT_CONN, "Incorrectly connected" }
2051 };
2052
2053 static const char *link_rate[] = {
2054 "unknown",
2055 "disabled",
2056 "phy reset problem",
2057 "spinup hold",
2058 "port selector",
2059 "unknown",
2060 "unknown",
2061 "unknown",
2062 "1.5Gbps",
2063 "3.0Gbps",
2064 "unknown",
2065 "unknown",
2066 "unknown",
2067 "unknown",
2068 "unknown",
2069 "unknown"
2070 };
2071
2072 /**
2073 * ipr_log_path_elem - Log a fabric path element.
2074 * @hostrcb: hostrcb struct
2075 * @cfg: fabric path element struct
2076 *
2077 * Return value:
2078 * none
2079 **/
2080 static void ipr_log_path_elem(struct ipr_hostrcb *hostrcb,
2081 struct ipr_hostrcb_config_element *cfg)
2082 {
2083 int i, j;
2084 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2085 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2086
2087 if (type == IPR_PATH_CFG_NOT_EXIST)
2088 return;
2089
2090 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2091 if (path_type_desc[i].type != type)
2092 continue;
2093
2094 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2095 if (path_status_desc[j].status != status)
2096 continue;
2097
2098 if (type == IPR_PATH_CFG_IOA_PORT) {
2099 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, WWN=%08X%08X\n",
2100 path_status_desc[j].desc, path_type_desc[i].desc,
2101 cfg->phy, link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2102 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2103 } else {
2104 if (cfg->cascaded_expander == 0xff && cfg->phy == 0xff) {
2105 ipr_hcam_err(hostrcb, "%s %s: Link rate=%s, WWN=%08X%08X\n",
2106 path_status_desc[j].desc, path_type_desc[i].desc,
2107 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2108 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2109 } else if (cfg->cascaded_expander == 0xff) {
2110 ipr_hcam_err(hostrcb, "%s %s: Phy=%d, Link rate=%s, "
2111 "WWN=%08X%08X\n", path_status_desc[j].desc,
2112 path_type_desc[i].desc, cfg->phy,
2113 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2114 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2115 } else if (cfg->phy == 0xff) {
2116 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Link rate=%s, "
2117 "WWN=%08X%08X\n", path_status_desc[j].desc,
2118 path_type_desc[i].desc, cfg->cascaded_expander,
2119 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2120 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2121 } else {
2122 ipr_hcam_err(hostrcb, "%s %s: Cascade=%d, Phy=%d, Link rate=%s "
2123 "WWN=%08X%08X\n", path_status_desc[j].desc,
2124 path_type_desc[i].desc, cfg->cascaded_expander, cfg->phy,
2125 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2126 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2127 }
2128 }
2129 return;
2130 }
2131 }
2132
2133 ipr_hcam_err(hostrcb, "Path element=%02X: Cascade=%d Phy=%d Link rate=%s "
2134 "WWN=%08X%08X\n", cfg->type_status, cfg->cascaded_expander, cfg->phy,
2135 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2136 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2137 }
2138
2139 /**
2140 * ipr_log64_path_elem - Log a fabric path element.
2141 * @hostrcb: hostrcb struct
2142 * @cfg: fabric path element struct
2143 *
2144 * Return value:
2145 * none
2146 **/
2147 static void ipr_log64_path_elem(struct ipr_hostrcb *hostrcb,
2148 struct ipr_hostrcb64_config_element *cfg)
2149 {
2150 int i, j;
2151 u8 desc_id = cfg->descriptor_id & IPR_DESCRIPTOR_MASK;
2152 u8 type = cfg->type_status & IPR_PATH_CFG_TYPE_MASK;
2153 u8 status = cfg->type_status & IPR_PATH_CFG_STATUS_MASK;
2154 char buffer[IPR_MAX_RES_PATH_LENGTH];
2155
2156 if (type == IPR_PATH_CFG_NOT_EXIST || desc_id != IPR_DESCRIPTOR_SIS64)
2157 return;
2158
2159 for (i = 0; i < ARRAY_SIZE(path_type_desc); i++) {
2160 if (path_type_desc[i].type != type)
2161 continue;
2162
2163 for (j = 0; j < ARRAY_SIZE(path_status_desc); j++) {
2164 if (path_status_desc[j].status != status)
2165 continue;
2166
2167 ipr_hcam_err(hostrcb, "%s %s: Resource Path=%s, Link rate=%s, WWN=%08X%08X\n",
2168 path_status_desc[j].desc, path_type_desc[i].desc,
2169 ipr_format_res_path(hostrcb->ioa_cfg,
2170 cfg->res_path, buffer, sizeof(buffer)),
2171 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2172 be32_to_cpu(cfg->wwid[0]),
2173 be32_to_cpu(cfg->wwid[1]));
2174 return;
2175 }
2176 }
2177 ipr_hcam_err(hostrcb, "Path element=%02X: Resource Path=%s, Link rate=%s "
2178 "WWN=%08X%08X\n", cfg->type_status,
2179 ipr_format_res_path(hostrcb->ioa_cfg,
2180 cfg->res_path, buffer, sizeof(buffer)),
2181 link_rate[cfg->link_rate & IPR_PHY_LINK_RATE_MASK],
2182 be32_to_cpu(cfg->wwid[0]), be32_to_cpu(cfg->wwid[1]));
2183 }
2184
2185 /**
2186 * ipr_log_fabric_error - Log a fabric error.
2187 * @ioa_cfg: ioa config struct
2188 * @hostrcb: hostrcb struct
2189 *
2190 * Return value:
2191 * none
2192 **/
2193 static void ipr_log_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2194 struct ipr_hostrcb *hostrcb)
2195 {
2196 struct ipr_hostrcb_type_20_error *error;
2197 struct ipr_hostrcb_fabric_desc *fabric;
2198 struct ipr_hostrcb_config_element *cfg;
2199 int i, add_len;
2200
2201 error = &hostrcb->hcam.u.error.u.type_20_error;
2202 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2203 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2204
2205 add_len = be32_to_cpu(hostrcb->hcam.length) -
2206 (offsetof(struct ipr_hostrcb_error, u) +
2207 offsetof(struct ipr_hostrcb_type_20_error, desc));
2208
2209 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2210 ipr_log_fabric_path(hostrcb, fabric);
2211 for_each_fabric_cfg(fabric, cfg)
2212 ipr_log_path_elem(hostrcb, cfg);
2213
2214 add_len -= be16_to_cpu(fabric->length);
2215 fabric = (struct ipr_hostrcb_fabric_desc *)
2216 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2217 }
2218
2219 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2220 }
2221
2222 /**
2223 * ipr_log_sis64_array_error - Log a sis64 array error.
2224 * @ioa_cfg: ioa config struct
2225 * @hostrcb: hostrcb struct
2226 *
2227 * Return value:
2228 * none
2229 **/
2230 static void ipr_log_sis64_array_error(struct ipr_ioa_cfg *ioa_cfg,
2231 struct ipr_hostrcb *hostrcb)
2232 {
2233 int i, num_entries;
2234 struct ipr_hostrcb_type_24_error *error;
2235 struct ipr_hostrcb64_array_data_entry *array_entry;
2236 char buffer[IPR_MAX_RES_PATH_LENGTH];
2237 const u8 zero_sn[IPR_SERIAL_NUM_LEN] = { [0 ... IPR_SERIAL_NUM_LEN-1] = '0' };
2238
2239 error = &hostrcb->hcam.u.error64.u.type_24_error;
2240
2241 ipr_err_separator;
2242
2243 ipr_err("RAID %s Array Configuration: %s\n",
2244 error->protection_level,
2245 ipr_format_res_path(ioa_cfg, error->last_res_path,
2246 buffer, sizeof(buffer)));
2247
2248 ipr_err_separator;
2249
2250 array_entry = error->array_member;
2251 num_entries = min_t(u32, error->num_entries,
2252 ARRAY_SIZE(error->array_member));
2253
2254 for (i = 0; i < num_entries; i++, array_entry++) {
2255
2256 if (!memcmp(array_entry->vpd.vpd.sn, zero_sn, IPR_SERIAL_NUM_LEN))
2257 continue;
2258
2259 if (error->exposed_mode_adn == i)
2260 ipr_err("Exposed Array Member %d:\n", i);
2261 else
2262 ipr_err("Array Member %d:\n", i);
2263
2264 ipr_err("Array Member %d:\n", i);
2265 ipr_log_ext_vpd(&array_entry->vpd);
2266 ipr_err("Current Location: %s\n",
2267 ipr_format_res_path(ioa_cfg, array_entry->res_path,
2268 buffer, sizeof(buffer)));
2269 ipr_err("Expected Location: %s\n",
2270 ipr_format_res_path(ioa_cfg,
2271 array_entry->expected_res_path,
2272 buffer, sizeof(buffer)));
2273
2274 ipr_err_separator;
2275 }
2276 }
2277
2278 /**
2279 * ipr_log_sis64_fabric_error - Log a sis64 fabric error.
2280 * @ioa_cfg: ioa config struct
2281 * @hostrcb: hostrcb struct
2282 *
2283 * Return value:
2284 * none
2285 **/
2286 static void ipr_log_sis64_fabric_error(struct ipr_ioa_cfg *ioa_cfg,
2287 struct ipr_hostrcb *hostrcb)
2288 {
2289 struct ipr_hostrcb_type_30_error *error;
2290 struct ipr_hostrcb64_fabric_desc *fabric;
2291 struct ipr_hostrcb64_config_element *cfg;
2292 int i, add_len;
2293
2294 error = &hostrcb->hcam.u.error64.u.type_30_error;
2295
2296 error->failure_reason[sizeof(error->failure_reason) - 1] = '\0';
2297 ipr_hcam_err(hostrcb, "%s\n", error->failure_reason);
2298
2299 add_len = be32_to_cpu(hostrcb->hcam.length) -
2300 (offsetof(struct ipr_hostrcb64_error, u) +
2301 offsetof(struct ipr_hostrcb_type_30_error, desc));
2302
2303 for (i = 0, fabric = error->desc; i < error->num_entries; i++) {
2304 ipr_log64_fabric_path(hostrcb, fabric);
2305 for_each_fabric_cfg(fabric, cfg)
2306 ipr_log64_path_elem(hostrcb, cfg);
2307
2308 add_len -= be16_to_cpu(fabric->length);
2309 fabric = (struct ipr_hostrcb64_fabric_desc *)
2310 ((unsigned long)fabric + be16_to_cpu(fabric->length));
2311 }
2312
2313 ipr_log_hex_data(ioa_cfg, (u32 *)fabric, add_len);
2314 }
2315
2316 /**
2317 * ipr_log_generic_error - Log an adapter error.
2318 * @ioa_cfg: ioa config struct
2319 * @hostrcb: hostrcb struct
2320 *
2321 * Return value:
2322 * none
2323 **/
2324 static void ipr_log_generic_error(struct ipr_ioa_cfg *ioa_cfg,
2325 struct ipr_hostrcb *hostrcb)
2326 {
2327 ipr_log_hex_data(ioa_cfg, hostrcb->hcam.u.raw.data,
2328 be32_to_cpu(hostrcb->hcam.length));
2329 }
2330
2331 /**
2332 * ipr_get_error - Find the specfied IOASC in the ipr_error_table.
2333 * @ioasc: IOASC
2334 *
2335 * This function will return the index of into the ipr_error_table
2336 * for the specified IOASC. If the IOASC is not in the table,
2337 * 0 will be returned, which points to the entry used for unknown errors.
2338 *
2339 * Return value:
2340 * index into the ipr_error_table
2341 **/
2342 static u32 ipr_get_error(u32 ioasc)
2343 {
2344 int i;
2345
2346 for (i = 0; i < ARRAY_SIZE(ipr_error_table); i++)
2347 if (ipr_error_table[i].ioasc == (ioasc & IPR_IOASC_IOASC_MASK))
2348 return i;
2349
2350 return 0;
2351 }
2352
2353 /**
2354 * ipr_handle_log_data - Log an adapter error.
2355 * @ioa_cfg: ioa config struct
2356 * @hostrcb: hostrcb struct
2357 *
2358 * This function logs an adapter error to the system.
2359 *
2360 * Return value:
2361 * none
2362 **/
2363 static void ipr_handle_log_data(struct ipr_ioa_cfg *ioa_cfg,
2364 struct ipr_hostrcb *hostrcb)
2365 {
2366 u32 ioasc;
2367 int error_index;
2368
2369 if (hostrcb->hcam.notify_type != IPR_HOST_RCB_NOTIF_TYPE_ERROR_LOG_ENTRY)
2370 return;
2371
2372 if (hostrcb->hcam.notifications_lost == IPR_HOST_RCB_NOTIFICATIONS_LOST)
2373 dev_err(&ioa_cfg->pdev->dev, "Error notifications lost\n");
2374
2375 if (ioa_cfg->sis64)
2376 ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2377 else
2378 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2379
2380 if (!ioa_cfg->sis64 && (ioasc == IPR_IOASC_BUS_WAS_RESET ||
2381 ioasc == IPR_IOASC_BUS_WAS_RESET_BY_OTHER)) {
2382 /* Tell the midlayer we had a bus reset so it will handle the UA properly */
2383 scsi_report_bus_reset(ioa_cfg->host,
2384 hostrcb->hcam.u.error.fd_res_addr.bus);
2385 }
2386
2387 error_index = ipr_get_error(ioasc);
2388
2389 if (!ipr_error_table[error_index].log_hcam)
2390 return;
2391
2392 ipr_hcam_err(hostrcb, "%s\n", ipr_error_table[error_index].error);
2393
2394 /* Set indication we have logged an error */
2395 ioa_cfg->errors_logged++;
2396
2397 if (ioa_cfg->log_level < ipr_error_table[error_index].log_hcam)
2398 return;
2399 if (be32_to_cpu(hostrcb->hcam.length) > sizeof(hostrcb->hcam.u.raw))
2400 hostrcb->hcam.length = cpu_to_be32(sizeof(hostrcb->hcam.u.raw));
2401
2402 switch (hostrcb->hcam.overlay_id) {
2403 case IPR_HOST_RCB_OVERLAY_ID_2:
2404 ipr_log_cache_error(ioa_cfg, hostrcb);
2405 break;
2406 case IPR_HOST_RCB_OVERLAY_ID_3:
2407 ipr_log_config_error(ioa_cfg, hostrcb);
2408 break;
2409 case IPR_HOST_RCB_OVERLAY_ID_4:
2410 case IPR_HOST_RCB_OVERLAY_ID_6:
2411 ipr_log_array_error(ioa_cfg, hostrcb);
2412 break;
2413 case IPR_HOST_RCB_OVERLAY_ID_7:
2414 ipr_log_dual_ioa_error(ioa_cfg, hostrcb);
2415 break;
2416 case IPR_HOST_RCB_OVERLAY_ID_12:
2417 ipr_log_enhanced_cache_error(ioa_cfg, hostrcb);
2418 break;
2419 case IPR_HOST_RCB_OVERLAY_ID_13:
2420 ipr_log_enhanced_config_error(ioa_cfg, hostrcb);
2421 break;
2422 case IPR_HOST_RCB_OVERLAY_ID_14:
2423 case IPR_HOST_RCB_OVERLAY_ID_16:
2424 ipr_log_enhanced_array_error(ioa_cfg, hostrcb);
2425 break;
2426 case IPR_HOST_RCB_OVERLAY_ID_17:
2427 ipr_log_enhanced_dual_ioa_error(ioa_cfg, hostrcb);
2428 break;
2429 case IPR_HOST_RCB_OVERLAY_ID_20:
2430 ipr_log_fabric_error(ioa_cfg, hostrcb);
2431 break;
2432 case IPR_HOST_RCB_OVERLAY_ID_23:
2433 ipr_log_sis64_config_error(ioa_cfg, hostrcb);
2434 break;
2435 case IPR_HOST_RCB_OVERLAY_ID_24:
2436 case IPR_HOST_RCB_OVERLAY_ID_26:
2437 ipr_log_sis64_array_error(ioa_cfg, hostrcb);
2438 break;
2439 case IPR_HOST_RCB_OVERLAY_ID_30:
2440 ipr_log_sis64_fabric_error(ioa_cfg, hostrcb);
2441 break;
2442 case IPR_HOST_RCB_OVERLAY_ID_1:
2443 case IPR_HOST_RCB_OVERLAY_ID_DEFAULT:
2444 default:
2445 ipr_log_generic_error(ioa_cfg, hostrcb);
2446 break;
2447 }
2448 }
2449
2450 /**
2451 * ipr_process_error - Op done function for an adapter error log.
2452 * @ipr_cmd: ipr command struct
2453 *
2454 * This function is the op done function for an error log host
2455 * controlled async from the adapter. It will log the error and
2456 * send the HCAM back to the adapter.
2457 *
2458 * Return value:
2459 * none
2460 **/
2461 static void ipr_process_error(struct ipr_cmnd *ipr_cmd)
2462 {
2463 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2464 struct ipr_hostrcb *hostrcb = ipr_cmd->u.hostrcb;
2465 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
2466 u32 fd_ioasc;
2467
2468 if (ioa_cfg->sis64)
2469 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error64.fd_ioasc);
2470 else
2471 fd_ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
2472
2473 list_del(&hostrcb->queue);
2474 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
2475
2476 if (!ioasc) {
2477 ipr_handle_log_data(ioa_cfg, hostrcb);
2478 if (fd_ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED)
2479 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
2480 } else if (ioasc != IPR_IOASC_IOA_WAS_RESET) {
2481 dev_err(&ioa_cfg->pdev->dev,
2482 "Host RCB failed with IOASC: 0x%08X\n", ioasc);
2483 }
2484
2485 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
2486 }
2487
2488 /**
2489 * ipr_timeout - An internally generated op has timed out.
2490 * @ipr_cmd: ipr command struct
2491 *
2492 * This function blocks host requests and initiates an
2493 * adapter reset.
2494 *
2495 * Return value:
2496 * none
2497 **/
2498 static void ipr_timeout(struct ipr_cmnd *ipr_cmd)
2499 {
2500 unsigned long lock_flags = 0;
2501 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2502
2503 ENTER;
2504 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2505
2506 ioa_cfg->errors_logged++;
2507 dev_err(&ioa_cfg->pdev->dev,
2508 "Adapter being reset due to command timeout.\n");
2509
2510 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2511 ioa_cfg->sdt_state = GET_DUMP;
2512
2513 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd)
2514 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2515
2516 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2517 LEAVE;
2518 }
2519
2520 /**
2521 * ipr_oper_timeout - Adapter timed out transitioning to operational
2522 * @ipr_cmd: ipr command struct
2523 *
2524 * This function blocks host requests and initiates an
2525 * adapter reset.
2526 *
2527 * Return value:
2528 * none
2529 **/
2530 static void ipr_oper_timeout(struct ipr_cmnd *ipr_cmd)
2531 {
2532 unsigned long lock_flags = 0;
2533 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
2534
2535 ENTER;
2536 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2537
2538 ioa_cfg->errors_logged++;
2539 dev_err(&ioa_cfg->pdev->dev,
2540 "Adapter timed out transitioning to operational.\n");
2541
2542 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
2543 ioa_cfg->sdt_state = GET_DUMP;
2544
2545 if (!ioa_cfg->in_reset_reload || ioa_cfg->reset_cmd == ipr_cmd) {
2546 if (ipr_fastfail)
2547 ioa_cfg->reset_retries += IPR_NUM_RESET_RELOAD_RETRIES;
2548 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
2549 }
2550
2551 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2552 LEAVE;
2553 }
2554
2555 /**
2556 * ipr_find_ses_entry - Find matching SES in SES table
2557 * @res: resource entry struct of SES
2558 *
2559 * Return value:
2560 * pointer to SES table entry / NULL on failure
2561 **/
2562 static const struct ipr_ses_table_entry *
2563 ipr_find_ses_entry(struct ipr_resource_entry *res)
2564 {
2565 int i, j, matches;
2566 struct ipr_std_inq_vpids *vpids;
2567 const struct ipr_ses_table_entry *ste = ipr_ses_table;
2568
2569 for (i = 0; i < ARRAY_SIZE(ipr_ses_table); i++, ste++) {
2570 for (j = 0, matches = 0; j < IPR_PROD_ID_LEN; j++) {
2571 if (ste->compare_product_id_byte[j] == 'X') {
2572 vpids = &res->std_inq_data.vpids;
2573 if (vpids->product_id[j] == ste->product_id[j])
2574 matches++;
2575 else
2576 break;
2577 } else
2578 matches++;
2579 }
2580
2581 if (matches == IPR_PROD_ID_LEN)
2582 return ste;
2583 }
2584
2585 return NULL;
2586 }
2587
2588 /**
2589 * ipr_get_max_scsi_speed - Determine max SCSI speed for a given bus
2590 * @ioa_cfg: ioa config struct
2591 * @bus: SCSI bus
2592 * @bus_width: bus width
2593 *
2594 * Return value:
2595 * SCSI bus speed in units of 100KHz, 1600 is 160 MHz
2596 * For a 2-byte wide SCSI bus, the maximum transfer speed is
2597 * twice the maximum transfer rate (e.g. for a wide enabled bus,
2598 * max 160MHz = max 320MB/sec).
2599 **/
2600 static u32 ipr_get_max_scsi_speed(struct ipr_ioa_cfg *ioa_cfg, u8 bus, u8 bus_width)
2601 {
2602 struct ipr_resource_entry *res;
2603 const struct ipr_ses_table_entry *ste;
2604 u32 max_xfer_rate = IPR_MAX_SCSI_RATE(bus_width);
2605
2606 /* Loop through each config table entry in the config table buffer */
2607 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
2608 if (!(IPR_IS_SES_DEVICE(res->std_inq_data)))
2609 continue;
2610
2611 if (bus != res->bus)
2612 continue;
2613
2614 if (!(ste = ipr_find_ses_entry(res)))
2615 continue;
2616
2617 max_xfer_rate = (ste->max_bus_speed_limit * 10) / (bus_width / 8);
2618 }
2619
2620 return max_xfer_rate;
2621 }
2622
2623 /**
2624 * ipr_wait_iodbg_ack - Wait for an IODEBUG ACK from the IOA
2625 * @ioa_cfg: ioa config struct
2626 * @max_delay: max delay in micro-seconds to wait
2627 *
2628 * Waits for an IODEBUG ACK from the IOA, doing busy looping.
2629 *
2630 * Return value:
2631 * 0 on success / other on failure
2632 **/
2633 static int ipr_wait_iodbg_ack(struct ipr_ioa_cfg *ioa_cfg, int max_delay)
2634 {
2635 volatile u32 pcii_reg;
2636 int delay = 1;
2637
2638 /* Read interrupt reg until IOA signals IO Debug Acknowledge */
2639 while (delay < max_delay) {
2640 pcii_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
2641
2642 if (pcii_reg & IPR_PCII_IO_DEBUG_ACKNOWLEDGE)
2643 return 0;
2644
2645 /* udelay cannot be used if delay is more than a few milliseconds */
2646 if ((delay / 1000) > MAX_UDELAY_MS)
2647 mdelay(delay / 1000);
2648 else
2649 udelay(delay);
2650
2651 delay += delay;
2652 }
2653 return -EIO;
2654 }
2655
2656 /**
2657 * ipr_get_sis64_dump_data_section - Dump IOA memory
2658 * @ioa_cfg: ioa config struct
2659 * @start_addr: adapter address to dump
2660 * @dest: destination kernel buffer
2661 * @length_in_words: length to dump in 4 byte words
2662 *
2663 * Return value:
2664 * 0 on success
2665 **/
2666 static int ipr_get_sis64_dump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2667 u32 start_addr,
2668 __be32 *dest, u32 length_in_words)
2669 {
2670 int i;
2671
2672 for (i = 0; i < length_in_words; i++) {
2673 writel(start_addr+(i*4), ioa_cfg->regs.dump_addr_reg);
2674 *dest = cpu_to_be32(readl(ioa_cfg->regs.dump_data_reg));
2675 dest++;
2676 }
2677
2678 return 0;
2679 }
2680
2681 /**
2682 * ipr_get_ldump_data_section - Dump IOA memory
2683 * @ioa_cfg: ioa config struct
2684 * @start_addr: adapter address to dump
2685 * @dest: destination kernel buffer
2686 * @length_in_words: length to dump in 4 byte words
2687 *
2688 * Return value:
2689 * 0 on success / -EIO on failure
2690 **/
2691 static int ipr_get_ldump_data_section(struct ipr_ioa_cfg *ioa_cfg,
2692 u32 start_addr,
2693 __be32 *dest, u32 length_in_words)
2694 {
2695 volatile u32 temp_pcii_reg;
2696 int i, delay = 0;
2697
2698 if (ioa_cfg->sis64)
2699 return ipr_get_sis64_dump_data_section(ioa_cfg, start_addr,
2700 dest, length_in_words);
2701
2702 /* Write IOA interrupt reg starting LDUMP state */
2703 writel((IPR_UPROCI_RESET_ALERT | IPR_UPROCI_IO_DEBUG_ALERT),
2704 ioa_cfg->regs.set_uproc_interrupt_reg32);
2705
2706 /* Wait for IO debug acknowledge */
2707 if (ipr_wait_iodbg_ack(ioa_cfg,
2708 IPR_LDUMP_MAX_LONG_ACK_DELAY_IN_USEC)) {
2709 dev_err(&ioa_cfg->pdev->dev,
2710 "IOA dump long data transfer timeout\n");
2711 return -EIO;
2712 }
2713
2714 /* Signal LDUMP interlocked - clear IO debug ack */
2715 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2716 ioa_cfg->regs.clr_interrupt_reg);
2717
2718 /* Write Mailbox with starting address */
2719 writel(start_addr, ioa_cfg->ioa_mailbox);
2720
2721 /* Signal address valid - clear IOA Reset alert */
2722 writel(IPR_UPROCI_RESET_ALERT,
2723 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2724
2725 for (i = 0; i < length_in_words; i++) {
2726 /* Wait for IO debug acknowledge */
2727 if (ipr_wait_iodbg_ack(ioa_cfg,
2728 IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC)) {
2729 dev_err(&ioa_cfg->pdev->dev,
2730 "IOA dump short data transfer timeout\n");
2731 return -EIO;
2732 }
2733
2734 /* Read data from mailbox and increment destination pointer */
2735 *dest = cpu_to_be32(readl(ioa_cfg->ioa_mailbox));
2736 dest++;
2737
2738 /* For all but the last word of data, signal data received */
2739 if (i < (length_in_words - 1)) {
2740 /* Signal dump data received - Clear IO debug Ack */
2741 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2742 ioa_cfg->regs.clr_interrupt_reg);
2743 }
2744 }
2745
2746 /* Signal end of block transfer. Set reset alert then clear IO debug ack */
2747 writel(IPR_UPROCI_RESET_ALERT,
2748 ioa_cfg->regs.set_uproc_interrupt_reg32);
2749
2750 writel(IPR_UPROCI_IO_DEBUG_ALERT,
2751 ioa_cfg->regs.clr_uproc_interrupt_reg32);
2752
2753 /* Signal dump data received - Clear IO debug Ack */
2754 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE,
2755 ioa_cfg->regs.clr_interrupt_reg);
2756
2757 /* Wait for IOA to signal LDUMP exit - IOA reset alert will be cleared */
2758 while (delay < IPR_LDUMP_MAX_SHORT_ACK_DELAY_IN_USEC) {
2759 temp_pcii_reg =
2760 readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
2761
2762 if (!(temp_pcii_reg & IPR_UPROCI_RESET_ALERT))
2763 return 0;
2764
2765 udelay(10);
2766 delay += 10;
2767 }
2768
2769 return 0;
2770 }
2771
2772 #ifdef CONFIG_SCSI_IPR_DUMP
2773 /**
2774 * ipr_sdt_copy - Copy Smart Dump Table to kernel buffer
2775 * @ioa_cfg: ioa config struct
2776 * @pci_address: adapter address
2777 * @length: length of data to copy
2778 *
2779 * Copy data from PCI adapter to kernel buffer.
2780 * Note: length MUST be a 4 byte multiple
2781 * Return value:
2782 * 0 on success / other on failure
2783 **/
2784 static int ipr_sdt_copy(struct ipr_ioa_cfg *ioa_cfg,
2785 unsigned long pci_address, u32 length)
2786 {
2787 int bytes_copied = 0;
2788 int cur_len, rc, rem_len, rem_page_len, max_dump_size;
2789 __be32 *page;
2790 unsigned long lock_flags = 0;
2791 struct ipr_ioa_dump *ioa_dump = &ioa_cfg->dump->ioa_dump;
2792
2793 if (ioa_cfg->sis64)
2794 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
2795 else
2796 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
2797
2798 while (bytes_copied < length &&
2799 (ioa_dump->hdr.len + bytes_copied) < max_dump_size) {
2800 if (ioa_dump->page_offset >= PAGE_SIZE ||
2801 ioa_dump->page_offset == 0) {
2802 page = (__be32 *)__get_free_page(GFP_ATOMIC);
2803
2804 if (!page) {
2805 ipr_trace;
2806 return bytes_copied;
2807 }
2808
2809 ioa_dump->page_offset = 0;
2810 ioa_dump->ioa_data[ioa_dump->next_page_index] = page;
2811 ioa_dump->next_page_index++;
2812 } else
2813 page = ioa_dump->ioa_data[ioa_dump->next_page_index - 1];
2814
2815 rem_len = length - bytes_copied;
2816 rem_page_len = PAGE_SIZE - ioa_dump->page_offset;
2817 cur_len = min(rem_len, rem_page_len);
2818
2819 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2820 if (ioa_cfg->sdt_state == ABORT_DUMP) {
2821 rc = -EIO;
2822 } else {
2823 rc = ipr_get_ldump_data_section(ioa_cfg,
2824 pci_address + bytes_copied,
2825 &page[ioa_dump->page_offset / 4],
2826 (cur_len / sizeof(u32)));
2827 }
2828 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2829
2830 if (!rc) {
2831 ioa_dump->page_offset += cur_len;
2832 bytes_copied += cur_len;
2833 } else {
2834 ipr_trace;
2835 break;
2836 }
2837 schedule();
2838 }
2839
2840 return bytes_copied;
2841 }
2842
2843 /**
2844 * ipr_init_dump_entry_hdr - Initialize a dump entry header.
2845 * @hdr: dump entry header struct
2846 *
2847 * Return value:
2848 * nothing
2849 **/
2850 static void ipr_init_dump_entry_hdr(struct ipr_dump_entry_header *hdr)
2851 {
2852 hdr->eye_catcher = IPR_DUMP_EYE_CATCHER;
2853 hdr->num_elems = 1;
2854 hdr->offset = sizeof(*hdr);
2855 hdr->status = IPR_DUMP_STATUS_SUCCESS;
2856 }
2857
2858 /**
2859 * ipr_dump_ioa_type_data - Fill in the adapter type in the dump.
2860 * @ioa_cfg: ioa config struct
2861 * @driver_dump: driver dump struct
2862 *
2863 * Return value:
2864 * nothing
2865 **/
2866 static void ipr_dump_ioa_type_data(struct ipr_ioa_cfg *ioa_cfg,
2867 struct ipr_driver_dump *driver_dump)
2868 {
2869 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
2870
2871 ipr_init_dump_entry_hdr(&driver_dump->ioa_type_entry.hdr);
2872 driver_dump->ioa_type_entry.hdr.len =
2873 sizeof(struct ipr_dump_ioa_type_entry) -
2874 sizeof(struct ipr_dump_entry_header);
2875 driver_dump->ioa_type_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2876 driver_dump->ioa_type_entry.hdr.id = IPR_DUMP_DRIVER_TYPE_ID;
2877 driver_dump->ioa_type_entry.type = ioa_cfg->type;
2878 driver_dump->ioa_type_entry.fw_version = (ucode_vpd->major_release << 24) |
2879 (ucode_vpd->card_type << 16) | (ucode_vpd->minor_release[0] << 8) |
2880 ucode_vpd->minor_release[1];
2881 driver_dump->hdr.num_entries++;
2882 }
2883
2884 /**
2885 * ipr_dump_version_data - Fill in the driver version in the dump.
2886 * @ioa_cfg: ioa config struct
2887 * @driver_dump: driver dump struct
2888 *
2889 * Return value:
2890 * nothing
2891 **/
2892 static void ipr_dump_version_data(struct ipr_ioa_cfg *ioa_cfg,
2893 struct ipr_driver_dump *driver_dump)
2894 {
2895 ipr_init_dump_entry_hdr(&driver_dump->version_entry.hdr);
2896 driver_dump->version_entry.hdr.len =
2897 sizeof(struct ipr_dump_version_entry) -
2898 sizeof(struct ipr_dump_entry_header);
2899 driver_dump->version_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2900 driver_dump->version_entry.hdr.id = IPR_DUMP_DRIVER_VERSION_ID;
2901 strcpy(driver_dump->version_entry.version, IPR_DRIVER_VERSION);
2902 driver_dump->hdr.num_entries++;
2903 }
2904
2905 /**
2906 * ipr_dump_trace_data - Fill in the IOA trace in the dump.
2907 * @ioa_cfg: ioa config struct
2908 * @driver_dump: driver dump struct
2909 *
2910 * Return value:
2911 * nothing
2912 **/
2913 static void ipr_dump_trace_data(struct ipr_ioa_cfg *ioa_cfg,
2914 struct ipr_driver_dump *driver_dump)
2915 {
2916 ipr_init_dump_entry_hdr(&driver_dump->trace_entry.hdr);
2917 driver_dump->trace_entry.hdr.len =
2918 sizeof(struct ipr_dump_trace_entry) -
2919 sizeof(struct ipr_dump_entry_header);
2920 driver_dump->trace_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
2921 driver_dump->trace_entry.hdr.id = IPR_DUMP_TRACE_ID;
2922 memcpy(driver_dump->trace_entry.trace, ioa_cfg->trace, IPR_TRACE_SIZE);
2923 driver_dump->hdr.num_entries++;
2924 }
2925
2926 /**
2927 * ipr_dump_location_data - Fill in the IOA location in the dump.
2928 * @ioa_cfg: ioa config struct
2929 * @driver_dump: driver dump struct
2930 *
2931 * Return value:
2932 * nothing
2933 **/
2934 static void ipr_dump_location_data(struct ipr_ioa_cfg *ioa_cfg,
2935 struct ipr_driver_dump *driver_dump)
2936 {
2937 ipr_init_dump_entry_hdr(&driver_dump->location_entry.hdr);
2938 driver_dump->location_entry.hdr.len =
2939 sizeof(struct ipr_dump_location_entry) -
2940 sizeof(struct ipr_dump_entry_header);
2941 driver_dump->location_entry.hdr.data_type = IPR_DUMP_DATA_TYPE_ASCII;
2942 driver_dump->location_entry.hdr.id = IPR_DUMP_LOCATION_ID;
2943 strcpy(driver_dump->location_entry.location, dev_name(&ioa_cfg->pdev->dev));
2944 driver_dump->hdr.num_entries++;
2945 }
2946
2947 /**
2948 * ipr_get_ioa_dump - Perform a dump of the driver and adapter.
2949 * @ioa_cfg: ioa config struct
2950 * @dump: dump struct
2951 *
2952 * Return value:
2953 * nothing
2954 **/
2955 static void ipr_get_ioa_dump(struct ipr_ioa_cfg *ioa_cfg, struct ipr_dump *dump)
2956 {
2957 unsigned long start_addr, sdt_word;
2958 unsigned long lock_flags = 0;
2959 struct ipr_driver_dump *driver_dump = &dump->driver_dump;
2960 struct ipr_ioa_dump *ioa_dump = &dump->ioa_dump;
2961 u32 num_entries, max_num_entries, start_off, end_off;
2962 u32 max_dump_size, bytes_to_copy, bytes_copied, rc;
2963 struct ipr_sdt *sdt;
2964 int valid = 1;
2965 int i;
2966
2967 ENTER;
2968
2969 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2970
2971 if (ioa_cfg->sdt_state != READ_DUMP) {
2972 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2973 return;
2974 }
2975
2976 if (ioa_cfg->sis64) {
2977 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2978 ssleep(IPR_DUMP_DELAY_SECONDS);
2979 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
2980 }
2981
2982 start_addr = readl(ioa_cfg->ioa_mailbox);
2983
2984 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(start_addr)) {
2985 dev_err(&ioa_cfg->pdev->dev,
2986 "Invalid dump table format: %lx\n", start_addr);
2987 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
2988 return;
2989 }
2990
2991 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA initiated\n");
2992
2993 driver_dump->hdr.eye_catcher = IPR_DUMP_EYE_CATCHER;
2994
2995 /* Initialize the overall dump header */
2996 driver_dump->hdr.len = sizeof(struct ipr_driver_dump);
2997 driver_dump->hdr.num_entries = 1;
2998 driver_dump->hdr.first_entry_offset = sizeof(struct ipr_dump_header);
2999 driver_dump->hdr.status = IPR_DUMP_STATUS_SUCCESS;
3000 driver_dump->hdr.os = IPR_DUMP_OS_LINUX;
3001 driver_dump->hdr.driver_name = IPR_DUMP_DRIVER_NAME;
3002
3003 ipr_dump_version_data(ioa_cfg, driver_dump);
3004 ipr_dump_location_data(ioa_cfg, driver_dump);
3005 ipr_dump_ioa_type_data(ioa_cfg, driver_dump);
3006 ipr_dump_trace_data(ioa_cfg, driver_dump);
3007
3008 /* Update dump_header */
3009 driver_dump->hdr.len += sizeof(struct ipr_dump_entry_header);
3010
3011 /* IOA Dump entry */
3012 ipr_init_dump_entry_hdr(&ioa_dump->hdr);
3013 ioa_dump->hdr.len = 0;
3014 ioa_dump->hdr.data_type = IPR_DUMP_DATA_TYPE_BINARY;
3015 ioa_dump->hdr.id = IPR_DUMP_IOA_DUMP_ID;
3016
3017 /* First entries in sdt are actually a list of dump addresses and
3018 lengths to gather the real dump data. sdt represents the pointer
3019 to the ioa generated dump table. Dump data will be extracted based
3020 on entries in this table */
3021 sdt = &ioa_dump->sdt;
3022
3023 if (ioa_cfg->sis64) {
3024 max_num_entries = IPR_FMT3_NUM_SDT_ENTRIES;
3025 max_dump_size = IPR_FMT3_MAX_IOA_DUMP_SIZE;
3026 } else {
3027 max_num_entries = IPR_FMT2_NUM_SDT_ENTRIES;
3028 max_dump_size = IPR_FMT2_MAX_IOA_DUMP_SIZE;
3029 }
3030
3031 bytes_to_copy = offsetof(struct ipr_sdt, entry) +
3032 (max_num_entries * sizeof(struct ipr_sdt_entry));
3033 rc = ipr_get_ldump_data_section(ioa_cfg, start_addr, (__be32 *)sdt,
3034 bytes_to_copy / sizeof(__be32));
3035
3036 /* Smart Dump table is ready to use and the first entry is valid */
3037 if (rc || ((be32_to_cpu(sdt->hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
3038 (be32_to_cpu(sdt->hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
3039 dev_err(&ioa_cfg->pdev->dev,
3040 "Dump of IOA failed. Dump table not valid: %d, %X.\n",
3041 rc, be32_to_cpu(sdt->hdr.state));
3042 driver_dump->hdr.status = IPR_DUMP_STATUS_FAILED;
3043 ioa_cfg->sdt_state = DUMP_OBTAINED;
3044 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3045 return;
3046 }
3047
3048 num_entries = be32_to_cpu(sdt->hdr.num_entries_used);
3049
3050 if (num_entries > max_num_entries)
3051 num_entries = max_num_entries;
3052
3053 /* Update dump length to the actual data to be copied */
3054 dump->driver_dump.hdr.len += sizeof(struct ipr_sdt_header);
3055 if (ioa_cfg->sis64)
3056 dump->driver_dump.hdr.len += num_entries * sizeof(struct ipr_sdt_entry);
3057 else
3058 dump->driver_dump.hdr.len += max_num_entries * sizeof(struct ipr_sdt_entry);
3059
3060 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3061
3062 for (i = 0; i < num_entries; i++) {
3063 if (ioa_dump->hdr.len > max_dump_size) {
3064 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3065 break;
3066 }
3067
3068 if (sdt->entry[i].flags & IPR_SDT_VALID_ENTRY) {
3069 sdt_word = be32_to_cpu(sdt->entry[i].start_token);
3070 if (ioa_cfg->sis64)
3071 bytes_to_copy = be32_to_cpu(sdt->entry[i].end_token);
3072 else {
3073 start_off = sdt_word & IPR_FMT2_MBX_ADDR_MASK;
3074 end_off = be32_to_cpu(sdt->entry[i].end_token);
3075
3076 if (ipr_sdt_is_fmt2(sdt_word) && sdt_word)
3077 bytes_to_copy = end_off - start_off;
3078 else
3079 valid = 0;
3080 }
3081 if (valid) {
3082 if (bytes_to_copy > max_dump_size) {
3083 sdt->entry[i].flags &= ~IPR_SDT_VALID_ENTRY;
3084 continue;
3085 }
3086
3087 /* Copy data from adapter to driver buffers */
3088 bytes_copied = ipr_sdt_copy(ioa_cfg, sdt_word,
3089 bytes_to_copy);
3090
3091 ioa_dump->hdr.len += bytes_copied;
3092
3093 if (bytes_copied != bytes_to_copy) {
3094 driver_dump->hdr.status = IPR_DUMP_STATUS_QUAL_SUCCESS;
3095 break;
3096 }
3097 }
3098 }
3099 }
3100
3101 dev_err(&ioa_cfg->pdev->dev, "Dump of IOA completed.\n");
3102
3103 /* Update dump_header */
3104 driver_dump->hdr.len += ioa_dump->hdr.len;
3105 wmb();
3106 ioa_cfg->sdt_state = DUMP_OBTAINED;
3107 LEAVE;
3108 }
3109
3110 #else
3111 #define ipr_get_ioa_dump(ioa_cfg, dump) do { } while (0)
3112 #endif
3113
3114 /**
3115 * ipr_release_dump - Free adapter dump memory
3116 * @kref: kref struct
3117 *
3118 * Return value:
3119 * nothing
3120 **/
3121 static void ipr_release_dump(struct kref *kref)
3122 {
3123 struct ipr_dump *dump = container_of(kref, struct ipr_dump, kref);
3124 struct ipr_ioa_cfg *ioa_cfg = dump->ioa_cfg;
3125 unsigned long lock_flags = 0;
3126 int i;
3127
3128 ENTER;
3129 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3130 ioa_cfg->dump = NULL;
3131 ioa_cfg->sdt_state = INACTIVE;
3132 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3133
3134 for (i = 0; i < dump->ioa_dump.next_page_index; i++)
3135 free_page((unsigned long) dump->ioa_dump.ioa_data[i]);
3136
3137 vfree(dump->ioa_dump.ioa_data);
3138 kfree(dump);
3139 LEAVE;
3140 }
3141
3142 /**
3143 * ipr_worker_thread - Worker thread
3144 * @work: ioa config struct
3145 *
3146 * Called at task level from a work thread. This function takes care
3147 * of adding and removing device from the mid-layer as configuration
3148 * changes are detected by the adapter.
3149 *
3150 * Return value:
3151 * nothing
3152 **/
3153 static void ipr_worker_thread(struct work_struct *work)
3154 {
3155 unsigned long lock_flags;
3156 struct ipr_resource_entry *res;
3157 struct scsi_device *sdev;
3158 struct ipr_dump *dump;
3159 struct ipr_ioa_cfg *ioa_cfg =
3160 container_of(work, struct ipr_ioa_cfg, work_q);
3161 u8 bus, target, lun;
3162 int did_work;
3163
3164 ENTER;
3165 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3166
3167 if (ioa_cfg->sdt_state == READ_DUMP) {
3168 dump = ioa_cfg->dump;
3169 if (!dump) {
3170 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3171 return;
3172 }
3173 kref_get(&dump->kref);
3174 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3175 ipr_get_ioa_dump(ioa_cfg, dump);
3176 kref_put(&dump->kref, ipr_release_dump);
3177
3178 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3179 if (ioa_cfg->sdt_state == DUMP_OBTAINED && !ioa_cfg->dump_timeout)
3180 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3181 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3182 return;
3183 }
3184
3185 restart:
3186 do {
3187 did_work = 0;
3188 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds ||
3189 !ioa_cfg->allow_ml_add_del) {
3190 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3191 return;
3192 }
3193
3194 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3195 if (res->del_from_ml && res->sdev) {
3196 did_work = 1;
3197 sdev = res->sdev;
3198 if (!scsi_device_get(sdev)) {
3199 if (!res->add_to_ml)
3200 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
3201 else
3202 res->del_from_ml = 0;
3203 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3204 scsi_remove_device(sdev);
3205 scsi_device_put(sdev);
3206 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3207 }
3208 break;
3209 }
3210 }
3211 } while (did_work);
3212
3213 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
3214 if (res->add_to_ml) {
3215 bus = res->bus;
3216 target = res->target;
3217 lun = res->lun;
3218 res->add_to_ml = 0;
3219 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3220 scsi_add_device(ioa_cfg->host, bus, target, lun);
3221 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3222 goto restart;
3223 }
3224 }
3225
3226 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3227 kobject_uevent(&ioa_cfg->host->shost_dev.kobj, KOBJ_CHANGE);
3228 LEAVE;
3229 }
3230
3231 #ifdef CONFIG_SCSI_IPR_TRACE
3232 /**
3233 * ipr_read_trace - Dump the adapter trace
3234 * @filp: open sysfs file
3235 * @kobj: kobject struct
3236 * @bin_attr: bin_attribute struct
3237 * @buf: buffer
3238 * @off: offset
3239 * @count: buffer size
3240 *
3241 * Return value:
3242 * number of bytes printed to buffer
3243 **/
3244 static ssize_t ipr_read_trace(struct file *filp, struct kobject *kobj,
3245 struct bin_attribute *bin_attr,
3246 char *buf, loff_t off, size_t count)
3247 {
3248 struct device *dev = container_of(kobj, struct device, kobj);
3249 struct Scsi_Host *shost = class_to_shost(dev);
3250 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3251 unsigned long lock_flags = 0;
3252 ssize_t ret;
3253
3254 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3255 ret = memory_read_from_buffer(buf, count, &off, ioa_cfg->trace,
3256 IPR_TRACE_SIZE);
3257 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3258
3259 return ret;
3260 }
3261
3262 static struct bin_attribute ipr_trace_attr = {
3263 .attr = {
3264 .name = "trace",
3265 .mode = S_IRUGO,
3266 },
3267 .size = 0,
3268 .read = ipr_read_trace,
3269 };
3270 #endif
3271
3272 /**
3273 * ipr_show_fw_version - Show the firmware version
3274 * @dev: class device struct
3275 * @buf: buffer
3276 *
3277 * Return value:
3278 * number of bytes printed to buffer
3279 **/
3280 static ssize_t ipr_show_fw_version(struct device *dev,
3281 struct device_attribute *attr, char *buf)
3282 {
3283 struct Scsi_Host *shost = class_to_shost(dev);
3284 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3285 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
3286 unsigned long lock_flags = 0;
3287 int len;
3288
3289 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3290 len = snprintf(buf, PAGE_SIZE, "%02X%02X%02X%02X\n",
3291 ucode_vpd->major_release, ucode_vpd->card_type,
3292 ucode_vpd->minor_release[0],
3293 ucode_vpd->minor_release[1]);
3294 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3295 return len;
3296 }
3297
3298 static struct device_attribute ipr_fw_version_attr = {
3299 .attr = {
3300 .name = "fw_version",
3301 .mode = S_IRUGO,
3302 },
3303 .show = ipr_show_fw_version,
3304 };
3305
3306 /**
3307 * ipr_show_log_level - Show the adapter's error logging level
3308 * @dev: class device struct
3309 * @buf: buffer
3310 *
3311 * Return value:
3312 * number of bytes printed to buffer
3313 **/
3314 static ssize_t ipr_show_log_level(struct device *dev,
3315 struct device_attribute *attr, char *buf)
3316 {
3317 struct Scsi_Host *shost = class_to_shost(dev);
3318 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3319 unsigned long lock_flags = 0;
3320 int len;
3321
3322 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3323 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->log_level);
3324 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3325 return len;
3326 }
3327
3328 /**
3329 * ipr_store_log_level - Change the adapter's error logging level
3330 * @dev: class device struct
3331 * @buf: buffer
3332 *
3333 * Return value:
3334 * number of bytes printed to buffer
3335 **/
3336 static ssize_t ipr_store_log_level(struct device *dev,
3337 struct device_attribute *attr,
3338 const char *buf, size_t count)
3339 {
3340 struct Scsi_Host *shost = class_to_shost(dev);
3341 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3342 unsigned long lock_flags = 0;
3343
3344 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3345 ioa_cfg->log_level = simple_strtoul(buf, NULL, 10);
3346 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3347 return strlen(buf);
3348 }
3349
3350 static struct device_attribute ipr_log_level_attr = {
3351 .attr = {
3352 .name = "log_level",
3353 .mode = S_IRUGO | S_IWUSR,
3354 },
3355 .show = ipr_show_log_level,
3356 .store = ipr_store_log_level
3357 };
3358
3359 /**
3360 * ipr_store_diagnostics - IOA Diagnostics interface
3361 * @dev: device struct
3362 * @buf: buffer
3363 * @count: buffer size
3364 *
3365 * This function will reset the adapter and wait a reasonable
3366 * amount of time for any errors that the adapter might log.
3367 *
3368 * Return value:
3369 * count on success / other on failure
3370 **/
3371 static ssize_t ipr_store_diagnostics(struct device *dev,
3372 struct device_attribute *attr,
3373 const char *buf, size_t count)
3374 {
3375 struct Scsi_Host *shost = class_to_shost(dev);
3376 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3377 unsigned long lock_flags = 0;
3378 int rc = count;
3379
3380 if (!capable(CAP_SYS_ADMIN))
3381 return -EACCES;
3382
3383 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3384 while (ioa_cfg->in_reset_reload) {
3385 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3386 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3387 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3388 }
3389
3390 ioa_cfg->errors_logged = 0;
3391 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3392
3393 if (ioa_cfg->in_reset_reload) {
3394 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3395 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3396
3397 /* Wait for a second for any errors to be logged */
3398 msleep(1000);
3399 } else {
3400 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3401 return -EIO;
3402 }
3403
3404 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3405 if (ioa_cfg->in_reset_reload || ioa_cfg->errors_logged)
3406 rc = -EIO;
3407 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3408
3409 return rc;
3410 }
3411
3412 static struct device_attribute ipr_diagnostics_attr = {
3413 .attr = {
3414 .name = "run_diagnostics",
3415 .mode = S_IWUSR,
3416 },
3417 .store = ipr_store_diagnostics
3418 };
3419
3420 /**
3421 * ipr_show_adapter_state - Show the adapter's state
3422 * @class_dev: device struct
3423 * @buf: buffer
3424 *
3425 * Return value:
3426 * number of bytes printed to buffer
3427 **/
3428 static ssize_t ipr_show_adapter_state(struct device *dev,
3429 struct device_attribute *attr, char *buf)
3430 {
3431 struct Scsi_Host *shost = class_to_shost(dev);
3432 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3433 unsigned long lock_flags = 0;
3434 int len;
3435
3436 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3437 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
3438 len = snprintf(buf, PAGE_SIZE, "offline\n");
3439 else
3440 len = snprintf(buf, PAGE_SIZE, "online\n");
3441 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3442 return len;
3443 }
3444
3445 /**
3446 * ipr_store_adapter_state - Change adapter state
3447 * @dev: device struct
3448 * @buf: buffer
3449 * @count: buffer size
3450 *
3451 * This function will change the adapter's state.
3452 *
3453 * Return value:
3454 * count on success / other on failure
3455 **/
3456 static ssize_t ipr_store_adapter_state(struct device *dev,
3457 struct device_attribute *attr,
3458 const char *buf, size_t count)
3459 {
3460 struct Scsi_Host *shost = class_to_shost(dev);
3461 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3462 unsigned long lock_flags;
3463 int result = count, i;
3464
3465 if (!capable(CAP_SYS_ADMIN))
3466 return -EACCES;
3467
3468 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3469 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead &&
3470 !strncmp(buf, "online", 6)) {
3471 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
3472 spin_lock(&ioa_cfg->hrrq[i]._lock);
3473 ioa_cfg->hrrq[i].ioa_is_dead = 0;
3474 spin_unlock(&ioa_cfg->hrrq[i]._lock);
3475 }
3476 wmb();
3477 ioa_cfg->reset_retries = 0;
3478 ioa_cfg->in_ioa_bringdown = 0;
3479 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
3480 }
3481 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3482 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3483
3484 return result;
3485 }
3486
3487 static struct device_attribute ipr_ioa_state_attr = {
3488 .attr = {
3489 .name = "online_state",
3490 .mode = S_IRUGO | S_IWUSR,
3491 },
3492 .show = ipr_show_adapter_state,
3493 .store = ipr_store_adapter_state
3494 };
3495
3496 /**
3497 * ipr_store_reset_adapter - Reset the adapter
3498 * @dev: device struct
3499 * @buf: buffer
3500 * @count: buffer size
3501 *
3502 * This function will reset the adapter.
3503 *
3504 * Return value:
3505 * count on success / other on failure
3506 **/
3507 static ssize_t ipr_store_reset_adapter(struct device *dev,
3508 struct device_attribute *attr,
3509 const char *buf, size_t count)
3510 {
3511 struct Scsi_Host *shost = class_to_shost(dev);
3512 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3513 unsigned long lock_flags;
3514 int result = count;
3515
3516 if (!capable(CAP_SYS_ADMIN))
3517 return -EACCES;
3518
3519 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3520 if (!ioa_cfg->in_reset_reload)
3521 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3522 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3523 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3524
3525 return result;
3526 }
3527
3528 static struct device_attribute ipr_ioa_reset_attr = {
3529 .attr = {
3530 .name = "reset_host",
3531 .mode = S_IWUSR,
3532 },
3533 .store = ipr_store_reset_adapter
3534 };
3535
3536 static int ipr_iopoll(struct blk_iopoll *iop, int budget);
3537 /**
3538 * ipr_show_iopoll_weight - Show ipr polling mode
3539 * @dev: class device struct
3540 * @buf: buffer
3541 *
3542 * Return value:
3543 * number of bytes printed to buffer
3544 **/
3545 static ssize_t ipr_show_iopoll_weight(struct device *dev,
3546 struct device_attribute *attr, char *buf)
3547 {
3548 struct Scsi_Host *shost = class_to_shost(dev);
3549 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3550 unsigned long lock_flags = 0;
3551 int len;
3552
3553 spin_lock_irqsave(shost->host_lock, lock_flags);
3554 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->iopoll_weight);
3555 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3556
3557 return len;
3558 }
3559
3560 /**
3561 * ipr_store_iopoll_weight - Change the adapter's polling mode
3562 * @dev: class device struct
3563 * @buf: buffer
3564 *
3565 * Return value:
3566 * number of bytes printed to buffer
3567 **/
3568 static ssize_t ipr_store_iopoll_weight(struct device *dev,
3569 struct device_attribute *attr,
3570 const char *buf, size_t count)
3571 {
3572 struct Scsi_Host *shost = class_to_shost(dev);
3573 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3574 unsigned long user_iopoll_weight;
3575 unsigned long lock_flags = 0;
3576 int i;
3577
3578 if (!ioa_cfg->sis64) {
3579 dev_info(&ioa_cfg->pdev->dev, "blk-iopoll not supported on this adapter\n");
3580 return -EINVAL;
3581 }
3582 if (kstrtoul(buf, 10, &user_iopoll_weight))
3583 return -EINVAL;
3584
3585 if (user_iopoll_weight > 256) {
3586 dev_info(&ioa_cfg->pdev->dev, "Invalid blk-iopoll weight. It must be less than 256\n");
3587 return -EINVAL;
3588 }
3589
3590 if (user_iopoll_weight == ioa_cfg->iopoll_weight) {
3591 dev_info(&ioa_cfg->pdev->dev, "Current blk-iopoll weight has the same weight\n");
3592 return strlen(buf);
3593 }
3594
3595 if (blk_iopoll_enabled && ioa_cfg->iopoll_weight &&
3596 ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3597 for (i = 1; i < ioa_cfg->hrrq_num; i++)
3598 blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
3599 }
3600
3601 spin_lock_irqsave(shost->host_lock, lock_flags);
3602 ioa_cfg->iopoll_weight = user_iopoll_weight;
3603 if (blk_iopoll_enabled && ioa_cfg->iopoll_weight &&
3604 ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
3605 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
3606 blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
3607 ioa_cfg->iopoll_weight, ipr_iopoll);
3608 blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
3609 }
3610 }
3611 spin_unlock_irqrestore(shost->host_lock, lock_flags);
3612
3613 return strlen(buf);
3614 }
3615
3616 static struct device_attribute ipr_iopoll_weight_attr = {
3617 .attr = {
3618 .name = "iopoll_weight",
3619 .mode = S_IRUGO | S_IWUSR,
3620 },
3621 .show = ipr_show_iopoll_weight,
3622 .store = ipr_store_iopoll_weight
3623 };
3624
3625 /**
3626 * ipr_alloc_ucode_buffer - Allocates a microcode download buffer
3627 * @buf_len: buffer length
3628 *
3629 * Allocates a DMA'able buffer in chunks and assembles a scatter/gather
3630 * list to use for microcode download
3631 *
3632 * Return value:
3633 * pointer to sglist / NULL on failure
3634 **/
3635 static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len)
3636 {
3637 int sg_size, order, bsize_elem, num_elem, i, j;
3638 struct ipr_sglist *sglist;
3639 struct scatterlist *scatterlist;
3640 struct page *page;
3641
3642 /* Get the minimum size per scatter/gather element */
3643 sg_size = buf_len / (IPR_MAX_SGLIST - 1);
3644
3645 /* Get the actual size per element */
3646 order = get_order(sg_size);
3647
3648 /* Determine the actual number of bytes per element */
3649 bsize_elem = PAGE_SIZE * (1 << order);
3650
3651 /* Determine the actual number of sg entries needed */
3652 if (buf_len % bsize_elem)
3653 num_elem = (buf_len / bsize_elem) + 1;
3654 else
3655 num_elem = buf_len / bsize_elem;
3656
3657 /* Allocate a scatter/gather list for the DMA */
3658 sglist = kzalloc(sizeof(struct ipr_sglist) +
3659 (sizeof(struct scatterlist) * (num_elem - 1)),
3660 GFP_KERNEL);
3661
3662 if (sglist == NULL) {
3663 ipr_trace;
3664 return NULL;
3665 }
3666
3667 scatterlist = sglist->scatterlist;
3668 sg_init_table(scatterlist, num_elem);
3669
3670 sglist->order = order;
3671 sglist->num_sg = num_elem;
3672
3673 /* Allocate a bunch of sg elements */
3674 for (i = 0; i < num_elem; i++) {
3675 page = alloc_pages(GFP_KERNEL, order);
3676 if (!page) {
3677 ipr_trace;
3678
3679 /* Free up what we already allocated */
3680 for (j = i - 1; j >= 0; j--)
3681 __free_pages(sg_page(&scatterlist[j]), order);
3682 kfree(sglist);
3683 return NULL;
3684 }
3685
3686 sg_set_page(&scatterlist[i], page, 0, 0);
3687 }
3688
3689 return sglist;
3690 }
3691
3692 /**
3693 * ipr_free_ucode_buffer - Frees a microcode download buffer
3694 * @p_dnld: scatter/gather list pointer
3695 *
3696 * Free a DMA'able ucode download buffer previously allocated with
3697 * ipr_alloc_ucode_buffer
3698 *
3699 * Return value:
3700 * nothing
3701 **/
3702 static void ipr_free_ucode_buffer(struct ipr_sglist *sglist)
3703 {
3704 int i;
3705
3706 for (i = 0; i < sglist->num_sg; i++)
3707 __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order);
3708
3709 kfree(sglist);
3710 }
3711
3712 /**
3713 * ipr_copy_ucode_buffer - Copy user buffer to kernel buffer
3714 * @sglist: scatter/gather list pointer
3715 * @buffer: buffer pointer
3716 * @len: buffer length
3717 *
3718 * Copy a microcode image from a user buffer into a buffer allocated by
3719 * ipr_alloc_ucode_buffer
3720 *
3721 * Return value:
3722 * 0 on success / other on failure
3723 **/
3724 static int ipr_copy_ucode_buffer(struct ipr_sglist *sglist,
3725 u8 *buffer, u32 len)
3726 {
3727 int bsize_elem, i, result = 0;
3728 struct scatterlist *scatterlist;
3729 void *kaddr;
3730
3731 /* Determine the actual number of bytes per element */
3732 bsize_elem = PAGE_SIZE * (1 << sglist->order);
3733
3734 scatterlist = sglist->scatterlist;
3735
3736 for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
3737 struct page *page = sg_page(&scatterlist[i]);
3738
3739 kaddr = kmap(page);
3740 memcpy(kaddr, buffer, bsize_elem);
3741 kunmap(page);
3742
3743 scatterlist[i].length = bsize_elem;
3744
3745 if (result != 0) {
3746 ipr_trace;
3747 return result;
3748 }
3749 }
3750
3751 if (len % bsize_elem) {
3752 struct page *page = sg_page(&scatterlist[i]);
3753
3754 kaddr = kmap(page);
3755 memcpy(kaddr, buffer, len % bsize_elem);
3756 kunmap(page);
3757
3758 scatterlist[i].length = len % bsize_elem;
3759 }
3760
3761 sglist->buffer_len = len;
3762 return result;
3763 }
3764
3765 /**
3766 * ipr_build_ucode_ioadl64 - Build a microcode download IOADL
3767 * @ipr_cmd: ipr command struct
3768 * @sglist: scatter/gather list
3769 *
3770 * Builds a microcode download IOA data list (IOADL).
3771 *
3772 **/
3773 static void ipr_build_ucode_ioadl64(struct ipr_cmnd *ipr_cmd,
3774 struct ipr_sglist *sglist)
3775 {
3776 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3777 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
3778 struct scatterlist *scatterlist = sglist->scatterlist;
3779 int i;
3780
3781 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3782 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3783 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3784
3785 ioarcb->ioadl_len =
3786 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
3787 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3788 ioadl64[i].flags = cpu_to_be32(IPR_IOADL_FLAGS_WRITE);
3789 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(&scatterlist[i]));
3790 ioadl64[i].address = cpu_to_be64(sg_dma_address(&scatterlist[i]));
3791 }
3792
3793 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3794 }
3795
3796 /**
3797 * ipr_build_ucode_ioadl - Build a microcode download IOADL
3798 * @ipr_cmd: ipr command struct
3799 * @sglist: scatter/gather list
3800 *
3801 * Builds a microcode download IOA data list (IOADL).
3802 *
3803 **/
3804 static void ipr_build_ucode_ioadl(struct ipr_cmnd *ipr_cmd,
3805 struct ipr_sglist *sglist)
3806 {
3807 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
3808 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
3809 struct scatterlist *scatterlist = sglist->scatterlist;
3810 int i;
3811
3812 ipr_cmd->dma_use_sg = sglist->num_dma_sg;
3813 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
3814 ioarcb->data_transfer_length = cpu_to_be32(sglist->buffer_len);
3815
3816 ioarcb->ioadl_len =
3817 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
3818
3819 for (i = 0; i < ipr_cmd->dma_use_sg; i++) {
3820 ioadl[i].flags_and_data_len =
3821 cpu_to_be32(IPR_IOADL_FLAGS_WRITE | sg_dma_len(&scatterlist[i]));
3822 ioadl[i].address =
3823 cpu_to_be32(sg_dma_address(&scatterlist[i]));
3824 }
3825
3826 ioadl[i-1].flags_and_data_len |=
3827 cpu_to_be32(IPR_IOADL_FLAGS_LAST);
3828 }
3829
3830 /**
3831 * ipr_update_ioa_ucode - Update IOA's microcode
3832 * @ioa_cfg: ioa config struct
3833 * @sglist: scatter/gather list
3834 *
3835 * Initiate an adapter reset to update the IOA's microcode
3836 *
3837 * Return value:
3838 * 0 on success / -EIO on failure
3839 **/
3840 static int ipr_update_ioa_ucode(struct ipr_ioa_cfg *ioa_cfg,
3841 struct ipr_sglist *sglist)
3842 {
3843 unsigned long lock_flags;
3844
3845 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3846 while (ioa_cfg->in_reset_reload) {
3847 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3848 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3849 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3850 }
3851
3852 if (ioa_cfg->ucode_sglist) {
3853 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3854 dev_err(&ioa_cfg->pdev->dev,
3855 "Microcode download already in progress\n");
3856 return -EIO;
3857 }
3858
3859 sglist->num_dma_sg = pci_map_sg(ioa_cfg->pdev, sglist->scatterlist,
3860 sglist->num_sg, DMA_TO_DEVICE);
3861
3862 if (!sglist->num_dma_sg) {
3863 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3864 dev_err(&ioa_cfg->pdev->dev,
3865 "Failed to map microcode download buffer!\n");
3866 return -EIO;
3867 }
3868
3869 ioa_cfg->ucode_sglist = sglist;
3870 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NORMAL);
3871 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3872 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
3873
3874 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3875 ioa_cfg->ucode_sglist = NULL;
3876 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3877 return 0;
3878 }
3879
3880 /**
3881 * ipr_store_update_fw - Update the firmware on the adapter
3882 * @class_dev: device struct
3883 * @buf: buffer
3884 * @count: buffer size
3885 *
3886 * This function will update the firmware on the adapter.
3887 *
3888 * Return value:
3889 * count on success / other on failure
3890 **/
3891 static ssize_t ipr_store_update_fw(struct device *dev,
3892 struct device_attribute *attr,
3893 const char *buf, size_t count)
3894 {
3895 struct Scsi_Host *shost = class_to_shost(dev);
3896 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3897 struct ipr_ucode_image_header *image_hdr;
3898 const struct firmware *fw_entry;
3899 struct ipr_sglist *sglist;
3900 char fname[100];
3901 char *src;
3902 int len, result, dnld_size;
3903
3904 if (!capable(CAP_SYS_ADMIN))
3905 return -EACCES;
3906
3907 len = snprintf(fname, 99, "%s", buf);
3908 fname[len-1] = '\0';
3909
3910 if (request_firmware(&fw_entry, fname, &ioa_cfg->pdev->dev)) {
3911 dev_err(&ioa_cfg->pdev->dev, "Firmware file %s not found\n", fname);
3912 return -EIO;
3913 }
3914
3915 image_hdr = (struct ipr_ucode_image_header *)fw_entry->data;
3916
3917 src = (u8 *)image_hdr + be32_to_cpu(image_hdr->header_length);
3918 dnld_size = fw_entry->size - be32_to_cpu(image_hdr->header_length);
3919 sglist = ipr_alloc_ucode_buffer(dnld_size);
3920
3921 if (!sglist) {
3922 dev_err(&ioa_cfg->pdev->dev, "Microcode buffer allocation failed\n");
3923 release_firmware(fw_entry);
3924 return -ENOMEM;
3925 }
3926
3927 result = ipr_copy_ucode_buffer(sglist, src, dnld_size);
3928
3929 if (result) {
3930 dev_err(&ioa_cfg->pdev->dev,
3931 "Microcode buffer copy to DMA buffer failed\n");
3932 goto out;
3933 }
3934
3935 ipr_info("Updating microcode, please be patient. This may take up to 30 minutes.\n");
3936
3937 result = ipr_update_ioa_ucode(ioa_cfg, sglist);
3938
3939 if (!result)
3940 result = count;
3941 out:
3942 ipr_free_ucode_buffer(sglist);
3943 release_firmware(fw_entry);
3944 return result;
3945 }
3946
3947 static struct device_attribute ipr_update_fw_attr = {
3948 .attr = {
3949 .name = "update_fw",
3950 .mode = S_IWUSR,
3951 },
3952 .store = ipr_store_update_fw
3953 };
3954
3955 /**
3956 * ipr_show_fw_type - Show the adapter's firmware type.
3957 * @dev: class device struct
3958 * @buf: buffer
3959 *
3960 * Return value:
3961 * number of bytes printed to buffer
3962 **/
3963 static ssize_t ipr_show_fw_type(struct device *dev,
3964 struct device_attribute *attr, char *buf)
3965 {
3966 struct Scsi_Host *shost = class_to_shost(dev);
3967 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
3968 unsigned long lock_flags = 0;
3969 int len;
3970
3971 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
3972 len = snprintf(buf, PAGE_SIZE, "%d\n", ioa_cfg->sis64);
3973 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
3974 return len;
3975 }
3976
3977 static struct device_attribute ipr_ioa_fw_type_attr = {
3978 .attr = {
3979 .name = "fw_type",
3980 .mode = S_IRUGO,
3981 },
3982 .show = ipr_show_fw_type
3983 };
3984
3985 static struct device_attribute *ipr_ioa_attrs[] = {
3986 &ipr_fw_version_attr,
3987 &ipr_log_level_attr,
3988 &ipr_diagnostics_attr,
3989 &ipr_ioa_state_attr,
3990 &ipr_ioa_reset_attr,
3991 &ipr_update_fw_attr,
3992 &ipr_ioa_fw_type_attr,
3993 &ipr_iopoll_weight_attr,
3994 NULL,
3995 };
3996
3997 #ifdef CONFIG_SCSI_IPR_DUMP
3998 /**
3999 * ipr_read_dump - Dump the adapter
4000 * @filp: open sysfs file
4001 * @kobj: kobject struct
4002 * @bin_attr: bin_attribute struct
4003 * @buf: buffer
4004 * @off: offset
4005 * @count: buffer size
4006 *
4007 * Return value:
4008 * number of bytes printed to buffer
4009 **/
4010 static ssize_t ipr_read_dump(struct file *filp, struct kobject *kobj,
4011 struct bin_attribute *bin_attr,
4012 char *buf, loff_t off, size_t count)
4013 {
4014 struct device *cdev = container_of(kobj, struct device, kobj);
4015 struct Scsi_Host *shost = class_to_shost(cdev);
4016 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4017 struct ipr_dump *dump;
4018 unsigned long lock_flags = 0;
4019 char *src;
4020 int len, sdt_end;
4021 size_t rc = count;
4022
4023 if (!capable(CAP_SYS_ADMIN))
4024 return -EACCES;
4025
4026 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4027 dump = ioa_cfg->dump;
4028
4029 if (ioa_cfg->sdt_state != DUMP_OBTAINED || !dump) {
4030 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4031 return 0;
4032 }
4033 kref_get(&dump->kref);
4034 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4035
4036 if (off > dump->driver_dump.hdr.len) {
4037 kref_put(&dump->kref, ipr_release_dump);
4038 return 0;
4039 }
4040
4041 if (off + count > dump->driver_dump.hdr.len) {
4042 count = dump->driver_dump.hdr.len - off;
4043 rc = count;
4044 }
4045
4046 if (count && off < sizeof(dump->driver_dump)) {
4047 if (off + count > sizeof(dump->driver_dump))
4048 len = sizeof(dump->driver_dump) - off;
4049 else
4050 len = count;
4051 src = (u8 *)&dump->driver_dump + off;
4052 memcpy(buf, src, len);
4053 buf += len;
4054 off += len;
4055 count -= len;
4056 }
4057
4058 off -= sizeof(dump->driver_dump);
4059
4060 if (ioa_cfg->sis64)
4061 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4062 (be32_to_cpu(dump->ioa_dump.sdt.hdr.num_entries_used) *
4063 sizeof(struct ipr_sdt_entry));
4064 else
4065 sdt_end = offsetof(struct ipr_ioa_dump, sdt.entry) +
4066 (IPR_FMT2_NUM_SDT_ENTRIES * sizeof(struct ipr_sdt_entry));
4067
4068 if (count && off < sdt_end) {
4069 if (off + count > sdt_end)
4070 len = sdt_end - off;
4071 else
4072 len = count;
4073 src = (u8 *)&dump->ioa_dump + off;
4074 memcpy(buf, src, len);
4075 buf += len;
4076 off += len;
4077 count -= len;
4078 }
4079
4080 off -= sdt_end;
4081
4082 while (count) {
4083 if ((off & PAGE_MASK) != ((off + count) & PAGE_MASK))
4084 len = PAGE_ALIGN(off) - off;
4085 else
4086 len = count;
4087 src = (u8 *)dump->ioa_dump.ioa_data[(off & PAGE_MASK) >> PAGE_SHIFT];
4088 src += off & ~PAGE_MASK;
4089 memcpy(buf, src, len);
4090 buf += len;
4091 off += len;
4092 count -= len;
4093 }
4094
4095 kref_put(&dump->kref, ipr_release_dump);
4096 return rc;
4097 }
4098
4099 /**
4100 * ipr_alloc_dump - Prepare for adapter dump
4101 * @ioa_cfg: ioa config struct
4102 *
4103 * Return value:
4104 * 0 on success / other on failure
4105 **/
4106 static int ipr_alloc_dump(struct ipr_ioa_cfg *ioa_cfg)
4107 {
4108 struct ipr_dump *dump;
4109 __be32 **ioa_data;
4110 unsigned long lock_flags = 0;
4111
4112 dump = kzalloc(sizeof(struct ipr_dump), GFP_KERNEL);
4113
4114 if (!dump) {
4115 ipr_err("Dump memory allocation failed\n");
4116 return -ENOMEM;
4117 }
4118
4119 if (ioa_cfg->sis64)
4120 ioa_data = vmalloc(IPR_FMT3_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4121 else
4122 ioa_data = vmalloc(IPR_FMT2_MAX_NUM_DUMP_PAGES * sizeof(__be32 *));
4123
4124 if (!ioa_data) {
4125 ipr_err("Dump memory allocation failed\n");
4126 kfree(dump);
4127 return -ENOMEM;
4128 }
4129
4130 dump->ioa_dump.ioa_data = ioa_data;
4131
4132 kref_init(&dump->kref);
4133 dump->ioa_cfg = ioa_cfg;
4134
4135 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4136
4137 if (INACTIVE != ioa_cfg->sdt_state) {
4138 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4139 vfree(dump->ioa_dump.ioa_data);
4140 kfree(dump);
4141 return 0;
4142 }
4143
4144 ioa_cfg->dump = dump;
4145 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
4146 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead && !ioa_cfg->dump_taken) {
4147 ioa_cfg->dump_taken = 1;
4148 schedule_work(&ioa_cfg->work_q);
4149 }
4150 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4151
4152 return 0;
4153 }
4154
4155 /**
4156 * ipr_free_dump - Free adapter dump memory
4157 * @ioa_cfg: ioa config struct
4158 *
4159 * Return value:
4160 * 0 on success / other on failure
4161 **/
4162 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg)
4163 {
4164 struct ipr_dump *dump;
4165 unsigned long lock_flags = 0;
4166
4167 ENTER;
4168
4169 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4170 dump = ioa_cfg->dump;
4171 if (!dump) {
4172 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4173 return 0;
4174 }
4175
4176 ioa_cfg->dump = NULL;
4177 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4178
4179 kref_put(&dump->kref, ipr_release_dump);
4180
4181 LEAVE;
4182 return 0;
4183 }
4184
4185 /**
4186 * ipr_write_dump - Setup dump state of adapter
4187 * @filp: open sysfs file
4188 * @kobj: kobject struct
4189 * @bin_attr: bin_attribute struct
4190 * @buf: buffer
4191 * @off: offset
4192 * @count: buffer size
4193 *
4194 * Return value:
4195 * number of bytes printed to buffer
4196 **/
4197 static ssize_t ipr_write_dump(struct file *filp, struct kobject *kobj,
4198 struct bin_attribute *bin_attr,
4199 char *buf, loff_t off, size_t count)
4200 {
4201 struct device *cdev = container_of(kobj, struct device, kobj);
4202 struct Scsi_Host *shost = class_to_shost(cdev);
4203 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
4204 int rc;
4205
4206 if (!capable(CAP_SYS_ADMIN))
4207 return -EACCES;
4208
4209 if (buf[0] == '1')
4210 rc = ipr_alloc_dump(ioa_cfg);
4211 else if (buf[0] == '0')
4212 rc = ipr_free_dump(ioa_cfg);
4213 else
4214 return -EINVAL;
4215
4216 if (rc)
4217 return rc;
4218 else
4219 return count;
4220 }
4221
4222 static struct bin_attribute ipr_dump_attr = {
4223 .attr = {
4224 .name = "dump",
4225 .mode = S_IRUSR | S_IWUSR,
4226 },
4227 .size = 0,
4228 .read = ipr_read_dump,
4229 .write = ipr_write_dump
4230 };
4231 #else
4232 static int ipr_free_dump(struct ipr_ioa_cfg *ioa_cfg) { return 0; };
4233 #endif
4234
4235 /**
4236 * ipr_change_queue_depth - Change the device's queue depth
4237 * @sdev: scsi device struct
4238 * @qdepth: depth to set
4239 * @reason: calling context
4240 *
4241 * Return value:
4242 * actual depth set
4243 **/
4244 static int ipr_change_queue_depth(struct scsi_device *sdev, int qdepth,
4245 int reason)
4246 {
4247 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4248 struct ipr_resource_entry *res;
4249 unsigned long lock_flags = 0;
4250
4251 if (reason != SCSI_QDEPTH_DEFAULT)
4252 return -EOPNOTSUPP;
4253
4254 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4255 res = (struct ipr_resource_entry *)sdev->hostdata;
4256
4257 if (res && ipr_is_gata(res) && qdepth > IPR_MAX_CMD_PER_ATA_LUN)
4258 qdepth = IPR_MAX_CMD_PER_ATA_LUN;
4259 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4260
4261 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
4262 return sdev->queue_depth;
4263 }
4264
4265 /**
4266 * ipr_change_queue_type - Change the device's queue type
4267 * @dsev: scsi device struct
4268 * @tag_type: type of tags to use
4269 *
4270 * Return value:
4271 * actual queue type set
4272 **/
4273 static int ipr_change_queue_type(struct scsi_device *sdev, int tag_type)
4274 {
4275 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4276 struct ipr_resource_entry *res;
4277 unsigned long lock_flags = 0;
4278
4279 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4280 res = (struct ipr_resource_entry *)sdev->hostdata;
4281
4282 if (res) {
4283 if (ipr_is_gscsi(res) && sdev->tagged_supported) {
4284 /*
4285 * We don't bother quiescing the device here since the
4286 * adapter firmware does it for us.
4287 */
4288 scsi_set_tag_type(sdev, tag_type);
4289
4290 if (tag_type)
4291 scsi_activate_tcq(sdev, sdev->queue_depth);
4292 else
4293 scsi_deactivate_tcq(sdev, sdev->queue_depth);
4294 } else
4295 tag_type = 0;
4296 } else
4297 tag_type = 0;
4298
4299 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4300 return tag_type;
4301 }
4302
4303 /**
4304 * ipr_show_adapter_handle - Show the adapter's resource handle for this device
4305 * @dev: device struct
4306 * @attr: device attribute structure
4307 * @buf: buffer
4308 *
4309 * Return value:
4310 * number of bytes printed to buffer
4311 **/
4312 static ssize_t ipr_show_adapter_handle(struct device *dev, struct device_attribute *attr, char *buf)
4313 {
4314 struct scsi_device *sdev = to_scsi_device(dev);
4315 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4316 struct ipr_resource_entry *res;
4317 unsigned long lock_flags = 0;
4318 ssize_t len = -ENXIO;
4319
4320 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4321 res = (struct ipr_resource_entry *)sdev->hostdata;
4322 if (res)
4323 len = snprintf(buf, PAGE_SIZE, "%08X\n", res->res_handle);
4324 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4325 return len;
4326 }
4327
4328 static struct device_attribute ipr_adapter_handle_attr = {
4329 .attr = {
4330 .name = "adapter_handle",
4331 .mode = S_IRUSR,
4332 },
4333 .show = ipr_show_adapter_handle
4334 };
4335
4336 /**
4337 * ipr_show_resource_path - Show the resource path or the resource address for
4338 * this device.
4339 * @dev: device struct
4340 * @attr: device attribute structure
4341 * @buf: buffer
4342 *
4343 * Return value:
4344 * number of bytes printed to buffer
4345 **/
4346 static ssize_t ipr_show_resource_path(struct device *dev, struct device_attribute *attr, char *buf)
4347 {
4348 struct scsi_device *sdev = to_scsi_device(dev);
4349 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4350 struct ipr_resource_entry *res;
4351 unsigned long lock_flags = 0;
4352 ssize_t len = -ENXIO;
4353 char buffer[IPR_MAX_RES_PATH_LENGTH];
4354
4355 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4356 res = (struct ipr_resource_entry *)sdev->hostdata;
4357 if (res && ioa_cfg->sis64)
4358 len = snprintf(buf, PAGE_SIZE, "%s\n",
4359 __ipr_format_res_path(res->res_path, buffer,
4360 sizeof(buffer)));
4361 else if (res)
4362 len = snprintf(buf, PAGE_SIZE, "%d:%d:%d:%d\n", ioa_cfg->host->host_no,
4363 res->bus, res->target, res->lun);
4364
4365 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4366 return len;
4367 }
4368
4369 static struct device_attribute ipr_resource_path_attr = {
4370 .attr = {
4371 .name = "resource_path",
4372 .mode = S_IRUGO,
4373 },
4374 .show = ipr_show_resource_path
4375 };
4376
4377 /**
4378 * ipr_show_device_id - Show the device_id for this device.
4379 * @dev: device struct
4380 * @attr: device attribute structure
4381 * @buf: buffer
4382 *
4383 * Return value:
4384 * number of bytes printed to buffer
4385 **/
4386 static ssize_t ipr_show_device_id(struct device *dev, struct device_attribute *attr, char *buf)
4387 {
4388 struct scsi_device *sdev = to_scsi_device(dev);
4389 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4390 struct ipr_resource_entry *res;
4391 unsigned long lock_flags = 0;
4392 ssize_t len = -ENXIO;
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, "0x%llx\n", res->dev_id);
4398 else if (res)
4399 len = snprintf(buf, PAGE_SIZE, "0x%llx\n", res->lun_wwn);
4400
4401 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4402 return len;
4403 }
4404
4405 static struct device_attribute ipr_device_id_attr = {
4406 .attr = {
4407 .name = "device_id",
4408 .mode = S_IRUGO,
4409 },
4410 .show = ipr_show_device_id
4411 };
4412
4413 /**
4414 * ipr_show_resource_type - Show the resource type for this device.
4415 * @dev: device struct
4416 * @attr: device attribute structure
4417 * @buf: buffer
4418 *
4419 * Return value:
4420 * number of bytes printed to buffer
4421 **/
4422 static ssize_t ipr_show_resource_type(struct device *dev, struct device_attribute *attr, char *buf)
4423 {
4424 struct scsi_device *sdev = to_scsi_device(dev);
4425 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)sdev->host->hostdata;
4426 struct ipr_resource_entry *res;
4427 unsigned long lock_flags = 0;
4428 ssize_t len = -ENXIO;
4429
4430 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4431 res = (struct ipr_resource_entry *)sdev->hostdata;
4432
4433 if (res)
4434 len = snprintf(buf, PAGE_SIZE, "%x\n", res->type);
4435
4436 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4437 return len;
4438 }
4439
4440 static struct device_attribute ipr_resource_type_attr = {
4441 .attr = {
4442 .name = "resource_type",
4443 .mode = S_IRUGO,
4444 },
4445 .show = ipr_show_resource_type
4446 };
4447
4448 static struct device_attribute *ipr_dev_attrs[] = {
4449 &ipr_adapter_handle_attr,
4450 &ipr_resource_path_attr,
4451 &ipr_device_id_attr,
4452 &ipr_resource_type_attr,
4453 NULL,
4454 };
4455
4456 /**
4457 * ipr_biosparam - Return the HSC mapping
4458 * @sdev: scsi device struct
4459 * @block_device: block device pointer
4460 * @capacity: capacity of the device
4461 * @parm: Array containing returned HSC values.
4462 *
4463 * This function generates the HSC parms that fdisk uses.
4464 * We want to make sure we return something that places partitions
4465 * on 4k boundaries for best performance with the IOA.
4466 *
4467 * Return value:
4468 * 0 on success
4469 **/
4470 static int ipr_biosparam(struct scsi_device *sdev,
4471 struct block_device *block_device,
4472 sector_t capacity, int *parm)
4473 {
4474 int heads, sectors;
4475 sector_t cylinders;
4476
4477 heads = 128;
4478 sectors = 32;
4479
4480 cylinders = capacity;
4481 sector_div(cylinders, (128 * 32));
4482
4483 /* return result */
4484 parm[0] = heads;
4485 parm[1] = sectors;
4486 parm[2] = cylinders;
4487
4488 return 0;
4489 }
4490
4491 /**
4492 * ipr_find_starget - Find target based on bus/target.
4493 * @starget: scsi target struct
4494 *
4495 * Return value:
4496 * resource entry pointer if found / NULL if not found
4497 **/
4498 static struct ipr_resource_entry *ipr_find_starget(struct scsi_target *starget)
4499 {
4500 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4501 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4502 struct ipr_resource_entry *res;
4503
4504 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4505 if ((res->bus == starget->channel) &&
4506 (res->target == starget->id)) {
4507 return res;
4508 }
4509 }
4510
4511 return NULL;
4512 }
4513
4514 static struct ata_port_info sata_port_info;
4515
4516 /**
4517 * ipr_target_alloc - Prepare for commands to a SCSI target
4518 * @starget: scsi target struct
4519 *
4520 * If the device is a SATA device, this function allocates an
4521 * ATA port with libata, else it does nothing.
4522 *
4523 * Return value:
4524 * 0 on success / non-0 on failure
4525 **/
4526 static int ipr_target_alloc(struct scsi_target *starget)
4527 {
4528 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4529 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4530 struct ipr_sata_port *sata_port;
4531 struct ata_port *ap;
4532 struct ipr_resource_entry *res;
4533 unsigned long lock_flags;
4534
4535 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4536 res = ipr_find_starget(starget);
4537 starget->hostdata = NULL;
4538
4539 if (res && ipr_is_gata(res)) {
4540 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4541 sata_port = kzalloc(sizeof(*sata_port), GFP_KERNEL);
4542 if (!sata_port)
4543 return -ENOMEM;
4544
4545 ap = ata_sas_port_alloc(&ioa_cfg->ata_host, &sata_port_info, shost);
4546 if (ap) {
4547 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4548 sata_port->ioa_cfg = ioa_cfg;
4549 sata_port->ap = ap;
4550 sata_port->res = res;
4551
4552 res->sata_port = sata_port;
4553 ap->private_data = sata_port;
4554 starget->hostdata = sata_port;
4555 } else {
4556 kfree(sata_port);
4557 return -ENOMEM;
4558 }
4559 }
4560 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4561
4562 return 0;
4563 }
4564
4565 /**
4566 * ipr_target_destroy - Destroy a SCSI target
4567 * @starget: scsi target struct
4568 *
4569 * If the device was a SATA device, this function frees the libata
4570 * ATA port, else it does nothing.
4571 *
4572 **/
4573 static void ipr_target_destroy(struct scsi_target *starget)
4574 {
4575 struct ipr_sata_port *sata_port = starget->hostdata;
4576 struct Scsi_Host *shost = dev_to_shost(&starget->dev);
4577 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) shost->hostdata;
4578
4579 if (ioa_cfg->sis64) {
4580 if (!ipr_find_starget(starget)) {
4581 if (starget->channel == IPR_ARRAY_VIRTUAL_BUS)
4582 clear_bit(starget->id, ioa_cfg->array_ids);
4583 else if (starget->channel == IPR_VSET_VIRTUAL_BUS)
4584 clear_bit(starget->id, ioa_cfg->vset_ids);
4585 else if (starget->channel == 0)
4586 clear_bit(starget->id, ioa_cfg->target_ids);
4587 }
4588 }
4589
4590 if (sata_port) {
4591 starget->hostdata = NULL;
4592 ata_sas_port_destroy(sata_port->ap);
4593 kfree(sata_port);
4594 }
4595 }
4596
4597 /**
4598 * ipr_find_sdev - Find device based on bus/target/lun.
4599 * @sdev: scsi device struct
4600 *
4601 * Return value:
4602 * resource entry pointer if found / NULL if not found
4603 **/
4604 static struct ipr_resource_entry *ipr_find_sdev(struct scsi_device *sdev)
4605 {
4606 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4607 struct ipr_resource_entry *res;
4608
4609 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
4610 if ((res->bus == sdev->channel) &&
4611 (res->target == sdev->id) &&
4612 (res->lun == sdev->lun))
4613 return res;
4614 }
4615
4616 return NULL;
4617 }
4618
4619 /**
4620 * ipr_slave_destroy - Unconfigure a SCSI device
4621 * @sdev: scsi device struct
4622 *
4623 * Return value:
4624 * nothing
4625 **/
4626 static void ipr_slave_destroy(struct scsi_device *sdev)
4627 {
4628 struct ipr_resource_entry *res;
4629 struct ipr_ioa_cfg *ioa_cfg;
4630 unsigned long lock_flags = 0;
4631
4632 ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4633
4634 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4635 res = (struct ipr_resource_entry *) sdev->hostdata;
4636 if (res) {
4637 if (res->sata_port)
4638 res->sata_port->ap->link.device[0].class = ATA_DEV_NONE;
4639 sdev->hostdata = NULL;
4640 res->sdev = NULL;
4641 res->sata_port = NULL;
4642 }
4643 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4644 }
4645
4646 /**
4647 * ipr_slave_configure - Configure a SCSI device
4648 * @sdev: scsi device struct
4649 *
4650 * This function configures the specified scsi device.
4651 *
4652 * Return value:
4653 * 0 on success
4654 **/
4655 static int ipr_slave_configure(struct scsi_device *sdev)
4656 {
4657 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4658 struct ipr_resource_entry *res;
4659 struct ata_port *ap = NULL;
4660 unsigned long lock_flags = 0;
4661 char buffer[IPR_MAX_RES_PATH_LENGTH];
4662
4663 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4664 res = sdev->hostdata;
4665 if (res) {
4666 if (ipr_is_af_dasd_device(res))
4667 sdev->type = TYPE_RAID;
4668 if (ipr_is_af_dasd_device(res) || ipr_is_ioa_resource(res)) {
4669 sdev->scsi_level = 4;
4670 sdev->no_uld_attach = 1;
4671 }
4672 if (ipr_is_vset_device(res)) {
4673 blk_queue_rq_timeout(sdev->request_queue,
4674 IPR_VSET_RW_TIMEOUT);
4675 blk_queue_max_hw_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
4676 }
4677 if (ipr_is_gata(res) && res->sata_port)
4678 ap = res->sata_port->ap;
4679 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4680
4681 if (ap) {
4682 scsi_adjust_queue_depth(sdev, 0, IPR_MAX_CMD_PER_ATA_LUN);
4683 ata_sas_slave_configure(sdev, ap);
4684 } else
4685 scsi_adjust_queue_depth(sdev, 0, sdev->host->cmd_per_lun);
4686 if (ioa_cfg->sis64)
4687 sdev_printk(KERN_INFO, sdev, "Resource path: %s\n",
4688 ipr_format_res_path(ioa_cfg,
4689 res->res_path, buffer, sizeof(buffer)));
4690 return 0;
4691 }
4692 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4693 return 0;
4694 }
4695
4696 /**
4697 * ipr_ata_slave_alloc - Prepare for commands to a SATA device
4698 * @sdev: scsi device struct
4699 *
4700 * This function initializes an ATA port so that future commands
4701 * sent through queuecommand will work.
4702 *
4703 * Return value:
4704 * 0 on success
4705 **/
4706 static int ipr_ata_slave_alloc(struct scsi_device *sdev)
4707 {
4708 struct ipr_sata_port *sata_port = NULL;
4709 int rc = -ENXIO;
4710
4711 ENTER;
4712 if (sdev->sdev_target)
4713 sata_port = sdev->sdev_target->hostdata;
4714 if (sata_port) {
4715 rc = ata_sas_port_init(sata_port->ap);
4716 if (rc == 0)
4717 rc = ata_sas_sync_probe(sata_port->ap);
4718 }
4719
4720 if (rc)
4721 ipr_slave_destroy(sdev);
4722
4723 LEAVE;
4724 return rc;
4725 }
4726
4727 /**
4728 * ipr_slave_alloc - Prepare for commands to a device.
4729 * @sdev: scsi device struct
4730 *
4731 * This function saves a pointer to the resource entry
4732 * in the scsi device struct if the device exists. We
4733 * can then use this pointer in ipr_queuecommand when
4734 * handling new commands.
4735 *
4736 * Return value:
4737 * 0 on success / -ENXIO if device does not exist
4738 **/
4739 static int ipr_slave_alloc(struct scsi_device *sdev)
4740 {
4741 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *) sdev->host->hostdata;
4742 struct ipr_resource_entry *res;
4743 unsigned long lock_flags;
4744 int rc = -ENXIO;
4745
4746 sdev->hostdata = NULL;
4747
4748 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4749
4750 res = ipr_find_sdev(sdev);
4751 if (res) {
4752 res->sdev = sdev;
4753 res->add_to_ml = 0;
4754 res->in_erp = 0;
4755 sdev->hostdata = res;
4756 if (!ipr_is_naca_model(res))
4757 res->needs_sync_complete = 1;
4758 rc = 0;
4759 if (ipr_is_gata(res)) {
4760 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4761 return ipr_ata_slave_alloc(sdev);
4762 }
4763 }
4764
4765 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4766
4767 return rc;
4768 }
4769
4770 static int ipr_eh_host_reset(struct scsi_cmnd *cmd)
4771 {
4772 struct ipr_ioa_cfg *ioa_cfg;
4773 unsigned long lock_flags = 0;
4774 int rc = SUCCESS;
4775
4776 ENTER;
4777 ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata;
4778 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4779
4780 if (!ioa_cfg->in_reset_reload) {
4781 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_ABBREV);
4782 dev_err(&ioa_cfg->pdev->dev,
4783 "Adapter being reset as a result of error recovery.\n");
4784
4785 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
4786 ioa_cfg->sdt_state = GET_DUMP;
4787 }
4788
4789 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4790 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4791 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4792
4793 /* If we got hit with a host reset while we were already resetting
4794 the adapter for some reason, and the reset failed. */
4795 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
4796 ipr_trace;
4797 rc = FAILED;
4798 }
4799
4800 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4801 LEAVE;
4802 return rc;
4803 }
4804
4805 /**
4806 * ipr_device_reset - Reset the device
4807 * @ioa_cfg: ioa config struct
4808 * @res: resource entry struct
4809 *
4810 * This function issues a device reset to the affected device.
4811 * If the device is a SCSI device, a LUN reset will be sent
4812 * to the device first. If that does not work, a target reset
4813 * will be sent. If the device is a SATA device, a PHY reset will
4814 * be sent.
4815 *
4816 * Return value:
4817 * 0 on success / non-zero on failure
4818 **/
4819 static int ipr_device_reset(struct ipr_ioa_cfg *ioa_cfg,
4820 struct ipr_resource_entry *res)
4821 {
4822 struct ipr_cmnd *ipr_cmd;
4823 struct ipr_ioarcb *ioarcb;
4824 struct ipr_cmd_pkt *cmd_pkt;
4825 struct ipr_ioarcb_ata_regs *regs;
4826 u32 ioasc;
4827
4828 ENTER;
4829 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
4830 ioarcb = &ipr_cmd->ioarcb;
4831 cmd_pkt = &ioarcb->cmd_pkt;
4832
4833 if (ipr_cmd->ioa_cfg->sis64) {
4834 regs = &ipr_cmd->i.ata_ioadl.regs;
4835 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
4836 } else
4837 regs = &ioarcb->u.add_data.u.regs;
4838
4839 ioarcb->res_handle = res->res_handle;
4840 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
4841 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
4842 if (ipr_is_gata(res)) {
4843 cmd_pkt->cdb[2] = IPR_ATA_PHY_RESET;
4844 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(regs->flags));
4845 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
4846 }
4847
4848 ipr_send_blocking_cmd(ipr_cmd, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
4849 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
4850 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
4851 if (ipr_is_gata(res) && res->sata_port && ioasc != IPR_IOASC_IOA_WAS_RESET) {
4852 if (ipr_cmd->ioa_cfg->sis64)
4853 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
4854 sizeof(struct ipr_ioasa_gata));
4855 else
4856 memcpy(&res->sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
4857 sizeof(struct ipr_ioasa_gata));
4858 }
4859
4860 LEAVE;
4861 return IPR_IOASC_SENSE_KEY(ioasc) ? -EIO : 0;
4862 }
4863
4864 /**
4865 * ipr_sata_reset - Reset the SATA port
4866 * @link: SATA link to reset
4867 * @classes: class of the attached device
4868 *
4869 * This function issues a SATA phy reset to the affected ATA link.
4870 *
4871 * Return value:
4872 * 0 on success / non-zero on failure
4873 **/
4874 static int ipr_sata_reset(struct ata_link *link, unsigned int *classes,
4875 unsigned long deadline)
4876 {
4877 struct ipr_sata_port *sata_port = link->ap->private_data;
4878 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
4879 struct ipr_resource_entry *res;
4880 unsigned long lock_flags = 0;
4881 int rc = -ENXIO;
4882
4883 ENTER;
4884 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4885 while (ioa_cfg->in_reset_reload) {
4886 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4887 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
4888 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
4889 }
4890
4891 res = sata_port->res;
4892 if (res) {
4893 rc = ipr_device_reset(ioa_cfg, res);
4894 *classes = res->ata_class;
4895 }
4896
4897 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
4898 LEAVE;
4899 return rc;
4900 }
4901
4902 /**
4903 * ipr_eh_dev_reset - Reset the device
4904 * @scsi_cmd: scsi command struct
4905 *
4906 * This function issues a device reset to the affected device.
4907 * A LUN reset will be sent to the device first. If that does
4908 * not work, a target reset will be sent.
4909 *
4910 * Return value:
4911 * SUCCESS / FAILED
4912 **/
4913 static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd)
4914 {
4915 struct ipr_cmnd *ipr_cmd;
4916 struct ipr_ioa_cfg *ioa_cfg;
4917 struct ipr_resource_entry *res;
4918 struct ata_port *ap;
4919 int rc = 0;
4920 struct ipr_hrr_queue *hrrq;
4921
4922 ENTER;
4923 ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata;
4924 res = scsi_cmd->device->hostdata;
4925
4926 if (!res)
4927 return FAILED;
4928
4929 /*
4930 * If we are currently going through reset/reload, return failed. This will force the
4931 * mid-layer to call ipr_eh_host_reset, which will then go to sleep and wait for the
4932 * reset to complete
4933 */
4934 if (ioa_cfg->in_reset_reload)
4935 return FAILED;
4936 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
4937 return FAILED;
4938
4939 for_each_hrrq(hrrq, ioa_cfg) {
4940 spin_lock(&hrrq->_lock);
4941 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
4942 if (ipr_cmd->ioarcb.res_handle == res->res_handle) {
4943 if (ipr_cmd->scsi_cmd)
4944 ipr_cmd->done = ipr_scsi_eh_done;
4945 if (ipr_cmd->qc)
4946 ipr_cmd->done = ipr_sata_eh_done;
4947 if (ipr_cmd->qc &&
4948 !(ipr_cmd->qc->flags & ATA_QCFLAG_FAILED)) {
4949 ipr_cmd->qc->err_mask |= AC_ERR_TIMEOUT;
4950 ipr_cmd->qc->flags |= ATA_QCFLAG_FAILED;
4951 }
4952 }
4953 }
4954 spin_unlock(&hrrq->_lock);
4955 }
4956 res->resetting_device = 1;
4957 scmd_printk(KERN_ERR, scsi_cmd, "Resetting device\n");
4958
4959 if (ipr_is_gata(res) && res->sata_port) {
4960 ap = res->sata_port->ap;
4961 spin_unlock_irq(scsi_cmd->device->host->host_lock);
4962 ata_std_error_handler(ap);
4963 spin_lock_irq(scsi_cmd->device->host->host_lock);
4964
4965 for_each_hrrq(hrrq, ioa_cfg) {
4966 spin_lock(&hrrq->_lock);
4967 list_for_each_entry(ipr_cmd,
4968 &hrrq->hrrq_pending_q, queue) {
4969 if (ipr_cmd->ioarcb.res_handle ==
4970 res->res_handle) {
4971 rc = -EIO;
4972 break;
4973 }
4974 }
4975 spin_unlock(&hrrq->_lock);
4976 }
4977 } else
4978 rc = ipr_device_reset(ioa_cfg, res);
4979 res->resetting_device = 0;
4980
4981 LEAVE;
4982 return rc ? FAILED : SUCCESS;
4983 }
4984
4985 static int ipr_eh_dev_reset(struct scsi_cmnd *cmd)
4986 {
4987 int rc;
4988
4989 spin_lock_irq(cmd->device->host->host_lock);
4990 rc = __ipr_eh_dev_reset(cmd);
4991 spin_unlock_irq(cmd->device->host->host_lock);
4992
4993 return rc;
4994 }
4995
4996 /**
4997 * ipr_bus_reset_done - Op done function for bus reset.
4998 * @ipr_cmd: ipr command struct
4999 *
5000 * This function is the op done function for a bus reset
5001 *
5002 * Return value:
5003 * none
5004 **/
5005 static void ipr_bus_reset_done(struct ipr_cmnd *ipr_cmd)
5006 {
5007 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5008 struct ipr_resource_entry *res;
5009
5010 ENTER;
5011 if (!ioa_cfg->sis64)
5012 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
5013 if (res->res_handle == ipr_cmd->ioarcb.res_handle) {
5014 scsi_report_bus_reset(ioa_cfg->host, res->bus);
5015 break;
5016 }
5017 }
5018
5019 /*
5020 * If abort has not completed, indicate the reset has, else call the
5021 * abort's done function to wake the sleeping eh thread
5022 */
5023 if (ipr_cmd->sibling->sibling)
5024 ipr_cmd->sibling->sibling = NULL;
5025 else
5026 ipr_cmd->sibling->done(ipr_cmd->sibling);
5027
5028 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5029 LEAVE;
5030 }
5031
5032 /**
5033 * ipr_abort_timeout - An abort task has timed out
5034 * @ipr_cmd: ipr command struct
5035 *
5036 * This function handles when an abort task times out. If this
5037 * happens we issue a bus reset since we have resources tied
5038 * up that must be freed before returning to the midlayer.
5039 *
5040 * Return value:
5041 * none
5042 **/
5043 static void ipr_abort_timeout(struct ipr_cmnd *ipr_cmd)
5044 {
5045 struct ipr_cmnd *reset_cmd;
5046 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
5047 struct ipr_cmd_pkt *cmd_pkt;
5048 unsigned long lock_flags = 0;
5049
5050 ENTER;
5051 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
5052 if (ipr_cmd->completion.done || ioa_cfg->in_reset_reload) {
5053 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5054 return;
5055 }
5056
5057 sdev_printk(KERN_ERR, ipr_cmd->u.sdev, "Abort timed out. Resetting bus.\n");
5058 reset_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5059 ipr_cmd->sibling = reset_cmd;
5060 reset_cmd->sibling = ipr_cmd;
5061 reset_cmd->ioarcb.res_handle = ipr_cmd->ioarcb.res_handle;
5062 cmd_pkt = &reset_cmd->ioarcb.cmd_pkt;
5063 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5064 cmd_pkt->cdb[0] = IPR_RESET_DEVICE;
5065 cmd_pkt->cdb[2] = IPR_RESET_TYPE_SELECT | IPR_BUS_RESET;
5066
5067 ipr_do_req(reset_cmd, ipr_bus_reset_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
5068 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
5069 LEAVE;
5070 }
5071
5072 /**
5073 * ipr_cancel_op - Cancel specified op
5074 * @scsi_cmd: scsi command struct
5075 *
5076 * This function cancels specified op.
5077 *
5078 * Return value:
5079 * SUCCESS / FAILED
5080 **/
5081 static int ipr_cancel_op(struct scsi_cmnd *scsi_cmd)
5082 {
5083 struct ipr_cmnd *ipr_cmd;
5084 struct ipr_ioa_cfg *ioa_cfg;
5085 struct ipr_resource_entry *res;
5086 struct ipr_cmd_pkt *cmd_pkt;
5087 u32 ioasc, int_reg;
5088 int op_found = 0;
5089 struct ipr_hrr_queue *hrrq;
5090
5091 ENTER;
5092 ioa_cfg = (struct ipr_ioa_cfg *)scsi_cmd->device->host->hostdata;
5093 res = scsi_cmd->device->hostdata;
5094
5095 /* If we are currently going through reset/reload, return failed.
5096 * This will force the mid-layer to call ipr_eh_host_reset,
5097 * which will then go to sleep and wait for the reset to complete
5098 */
5099 if (ioa_cfg->in_reset_reload ||
5100 ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
5101 return FAILED;
5102 if (!res)
5103 return FAILED;
5104
5105 /*
5106 * If we are aborting a timed out op, chances are that the timeout was caused
5107 * by a still not detected EEH error. In such cases, reading a register will
5108 * trigger the EEH recovery infrastructure.
5109 */
5110 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5111
5112 if (!ipr_is_gscsi(res))
5113 return FAILED;
5114
5115 for_each_hrrq(hrrq, ioa_cfg) {
5116 spin_lock(&hrrq->_lock);
5117 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
5118 if (ipr_cmd->scsi_cmd == scsi_cmd) {
5119 ipr_cmd->done = ipr_scsi_eh_done;
5120 op_found = 1;
5121 break;
5122 }
5123 }
5124 spin_unlock(&hrrq->_lock);
5125 }
5126
5127 if (!op_found)
5128 return SUCCESS;
5129
5130 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
5131 ipr_cmd->ioarcb.res_handle = res->res_handle;
5132 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5133 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5134 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5135 ipr_cmd->u.sdev = scsi_cmd->device;
5136
5137 scmd_printk(KERN_ERR, scsi_cmd, "Aborting command: %02X\n",
5138 scsi_cmd->cmnd[0]);
5139 ipr_send_blocking_cmd(ipr_cmd, ipr_abort_timeout, IPR_CANCEL_ALL_TIMEOUT);
5140 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5141
5142 /*
5143 * If the abort task timed out and we sent a bus reset, we will get
5144 * one the following responses to the abort
5145 */
5146 if (ioasc == IPR_IOASC_BUS_WAS_RESET || ioasc == IPR_IOASC_SYNC_REQUIRED) {
5147 ioasc = 0;
5148 ipr_trace;
5149 }
5150
5151 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5152 if (!ipr_is_naca_model(res))
5153 res->needs_sync_complete = 1;
5154
5155 LEAVE;
5156 return IPR_IOASC_SENSE_KEY(ioasc) ? FAILED : SUCCESS;
5157 }
5158
5159 /**
5160 * ipr_eh_abort - Abort a single op
5161 * @scsi_cmd: scsi command struct
5162 *
5163 * Return value:
5164 * SUCCESS / FAILED
5165 **/
5166 static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd)
5167 {
5168 unsigned long flags;
5169 int rc;
5170
5171 ENTER;
5172
5173 spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags);
5174 rc = ipr_cancel_op(scsi_cmd);
5175 spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags);
5176
5177 LEAVE;
5178 return rc;
5179 }
5180
5181 /**
5182 * ipr_handle_other_interrupt - Handle "other" interrupts
5183 * @ioa_cfg: ioa config struct
5184 * @int_reg: interrupt register
5185 *
5186 * Return value:
5187 * IRQ_NONE / IRQ_HANDLED
5188 **/
5189 static irqreturn_t ipr_handle_other_interrupt(struct ipr_ioa_cfg *ioa_cfg,
5190 u32 int_reg)
5191 {
5192 irqreturn_t rc = IRQ_HANDLED;
5193 u32 int_mask_reg;
5194
5195 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
5196 int_reg &= ~int_mask_reg;
5197
5198 /* If an interrupt on the adapter did not occur, ignore it.
5199 * Or in the case of SIS 64, check for a stage change interrupt.
5200 */
5201 if ((int_reg & IPR_PCII_OPER_INTERRUPTS) == 0) {
5202 if (ioa_cfg->sis64) {
5203 int_mask_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
5204 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5205 if (int_reg & IPR_PCII_IPL_STAGE_CHANGE) {
5206
5207 /* clear stage change */
5208 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.clr_interrupt_reg);
5209 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg) & ~int_mask_reg;
5210 list_del(&ioa_cfg->reset_cmd->queue);
5211 del_timer(&ioa_cfg->reset_cmd->timer);
5212 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5213 return IRQ_HANDLED;
5214 }
5215 }
5216
5217 return IRQ_NONE;
5218 }
5219
5220 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
5221 /* Mask the interrupt */
5222 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.set_interrupt_mask_reg);
5223
5224 /* Clear the interrupt */
5225 writel(IPR_PCII_IOA_TRANS_TO_OPER, ioa_cfg->regs.clr_interrupt_reg);
5226 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
5227
5228 list_del(&ioa_cfg->reset_cmd->queue);
5229 del_timer(&ioa_cfg->reset_cmd->timer);
5230 ipr_reset_ioa_job(ioa_cfg->reset_cmd);
5231 } else if ((int_reg & IPR_PCII_HRRQ_UPDATED) == int_reg) {
5232 if (ioa_cfg->clear_isr) {
5233 if (ipr_debug && printk_ratelimit())
5234 dev_err(&ioa_cfg->pdev->dev,
5235 "Spurious interrupt detected. 0x%08X\n", int_reg);
5236 writel(IPR_PCII_HRRQ_UPDATED, ioa_cfg->regs.clr_interrupt_reg32);
5237 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5238 return IRQ_NONE;
5239 }
5240 } else {
5241 if (int_reg & IPR_PCII_IOA_UNIT_CHECKED)
5242 ioa_cfg->ioa_unit_checked = 1;
5243 else if (int_reg & IPR_PCII_NO_HOST_RRQ)
5244 dev_err(&ioa_cfg->pdev->dev,
5245 "No Host RRQ. 0x%08X\n", int_reg);
5246 else
5247 dev_err(&ioa_cfg->pdev->dev,
5248 "Permanent IOA failure. 0x%08X\n", int_reg);
5249
5250 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5251 ioa_cfg->sdt_state = GET_DUMP;
5252
5253 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
5254 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5255 }
5256
5257 return rc;
5258 }
5259
5260 /**
5261 * ipr_isr_eh - Interrupt service routine error handler
5262 * @ioa_cfg: ioa config struct
5263 * @msg: message to log
5264 *
5265 * Return value:
5266 * none
5267 **/
5268 static void ipr_isr_eh(struct ipr_ioa_cfg *ioa_cfg, char *msg, u16 number)
5269 {
5270 ioa_cfg->errors_logged++;
5271 dev_err(&ioa_cfg->pdev->dev, "%s %d\n", msg, number);
5272
5273 if (WAIT_FOR_DUMP == ioa_cfg->sdt_state)
5274 ioa_cfg->sdt_state = GET_DUMP;
5275
5276 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
5277 }
5278
5279 static int ipr_process_hrrq(struct ipr_hrr_queue *hrr_queue, int budget,
5280 struct list_head *doneq)
5281 {
5282 u32 ioasc;
5283 u16 cmd_index;
5284 struct ipr_cmnd *ipr_cmd;
5285 struct ipr_ioa_cfg *ioa_cfg = hrr_queue->ioa_cfg;
5286 int num_hrrq = 0;
5287
5288 /* If interrupts are disabled, ignore the interrupt */
5289 if (!hrr_queue->allow_interrupts)
5290 return 0;
5291
5292 while ((be32_to_cpu(*hrr_queue->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5293 hrr_queue->toggle_bit) {
5294
5295 cmd_index = (be32_to_cpu(*hrr_queue->hrrq_curr) &
5296 IPR_HRRQ_REQ_RESP_HANDLE_MASK) >>
5297 IPR_HRRQ_REQ_RESP_HANDLE_SHIFT;
5298
5299 if (unlikely(cmd_index > hrr_queue->max_cmd_id ||
5300 cmd_index < hrr_queue->min_cmd_id)) {
5301 ipr_isr_eh(ioa_cfg,
5302 "Invalid response handle from IOA: ",
5303 cmd_index);
5304 break;
5305 }
5306
5307 ipr_cmd = ioa_cfg->ipr_cmnd_list[cmd_index];
5308 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5309
5310 ipr_trc_hook(ipr_cmd, IPR_TRACE_FINISH, ioasc);
5311
5312 list_move_tail(&ipr_cmd->queue, doneq);
5313
5314 if (hrr_queue->hrrq_curr < hrr_queue->hrrq_end) {
5315 hrr_queue->hrrq_curr++;
5316 } else {
5317 hrr_queue->hrrq_curr = hrr_queue->hrrq_start;
5318 hrr_queue->toggle_bit ^= 1u;
5319 }
5320 num_hrrq++;
5321 if (budget > 0 && num_hrrq >= budget)
5322 break;
5323 }
5324
5325 return num_hrrq;
5326 }
5327
5328 static int ipr_iopoll(struct blk_iopoll *iop, int budget)
5329 {
5330 struct ipr_ioa_cfg *ioa_cfg;
5331 struct ipr_hrr_queue *hrrq;
5332 struct ipr_cmnd *ipr_cmd, *temp;
5333 unsigned long hrrq_flags;
5334 int completed_ops;
5335 LIST_HEAD(doneq);
5336
5337 hrrq = container_of(iop, struct ipr_hrr_queue, iopoll);
5338 ioa_cfg = hrrq->ioa_cfg;
5339
5340 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5341 completed_ops = ipr_process_hrrq(hrrq, budget, &doneq);
5342
5343 if (completed_ops < budget)
5344 blk_iopoll_complete(iop);
5345 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5346
5347 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5348 list_del(&ipr_cmd->queue);
5349 del_timer(&ipr_cmd->timer);
5350 ipr_cmd->fast_done(ipr_cmd);
5351 }
5352
5353 return completed_ops;
5354 }
5355
5356 /**
5357 * ipr_isr - Interrupt service routine
5358 * @irq: irq number
5359 * @devp: pointer to ioa config struct
5360 *
5361 * Return value:
5362 * IRQ_NONE / IRQ_HANDLED
5363 **/
5364 static irqreturn_t ipr_isr(int irq, void *devp)
5365 {
5366 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5367 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5368 unsigned long hrrq_flags = 0;
5369 u32 int_reg = 0;
5370 int num_hrrq = 0;
5371 int irq_none = 0;
5372 struct ipr_cmnd *ipr_cmd, *temp;
5373 irqreturn_t rc = IRQ_NONE;
5374 LIST_HEAD(doneq);
5375
5376 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5377 /* If interrupts are disabled, ignore the interrupt */
5378 if (!hrrq->allow_interrupts) {
5379 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5380 return IRQ_NONE;
5381 }
5382
5383 while (1) {
5384 if (ipr_process_hrrq(hrrq, -1, &doneq)) {
5385 rc = IRQ_HANDLED;
5386
5387 if (!ioa_cfg->clear_isr)
5388 break;
5389
5390 /* Clear the PCI interrupt */
5391 num_hrrq = 0;
5392 do {
5393 writel(IPR_PCII_HRRQ_UPDATED,
5394 ioa_cfg->regs.clr_interrupt_reg32);
5395 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5396 } while (int_reg & IPR_PCII_HRRQ_UPDATED &&
5397 num_hrrq++ < IPR_MAX_HRRQ_RETRIES);
5398
5399 } else if (rc == IRQ_NONE && irq_none == 0) {
5400 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
5401 irq_none++;
5402 } else if (num_hrrq == IPR_MAX_HRRQ_RETRIES &&
5403 int_reg & IPR_PCII_HRRQ_UPDATED) {
5404 ipr_isr_eh(ioa_cfg,
5405 "Error clearing HRRQ: ", num_hrrq);
5406 rc = IRQ_HANDLED;
5407 break;
5408 } else
5409 break;
5410 }
5411
5412 if (unlikely(rc == IRQ_NONE))
5413 rc = ipr_handle_other_interrupt(ioa_cfg, int_reg);
5414
5415 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5416 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5417 list_del(&ipr_cmd->queue);
5418 del_timer(&ipr_cmd->timer);
5419 ipr_cmd->fast_done(ipr_cmd);
5420 }
5421 return rc;
5422 }
5423
5424 /**
5425 * ipr_isr_mhrrq - Interrupt service routine
5426 * @irq: irq number
5427 * @devp: pointer to ioa config struct
5428 *
5429 * Return value:
5430 * IRQ_NONE / IRQ_HANDLED
5431 **/
5432 static irqreturn_t ipr_isr_mhrrq(int irq, void *devp)
5433 {
5434 struct ipr_hrr_queue *hrrq = (struct ipr_hrr_queue *)devp;
5435 struct ipr_ioa_cfg *ioa_cfg = hrrq->ioa_cfg;
5436 unsigned long hrrq_flags = 0;
5437 struct ipr_cmnd *ipr_cmd, *temp;
5438 irqreturn_t rc = IRQ_NONE;
5439 LIST_HEAD(doneq);
5440
5441 spin_lock_irqsave(hrrq->lock, hrrq_flags);
5442
5443 /* If interrupts are disabled, ignore the interrupt */
5444 if (!hrrq->allow_interrupts) {
5445 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5446 return IRQ_NONE;
5447 }
5448
5449 if (blk_iopoll_enabled && ioa_cfg->iopoll_weight &&
5450 ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
5451 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5452 hrrq->toggle_bit) {
5453 if (!blk_iopoll_sched_prep(&hrrq->iopoll))
5454 blk_iopoll_sched(&hrrq->iopoll);
5455 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5456 return IRQ_HANDLED;
5457 }
5458 } else {
5459 if ((be32_to_cpu(*hrrq->hrrq_curr) & IPR_HRRQ_TOGGLE_BIT) ==
5460 hrrq->toggle_bit)
5461
5462 if (ipr_process_hrrq(hrrq, -1, &doneq))
5463 rc = IRQ_HANDLED;
5464 }
5465
5466 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
5467
5468 list_for_each_entry_safe(ipr_cmd, temp, &doneq, queue) {
5469 list_del(&ipr_cmd->queue);
5470 del_timer(&ipr_cmd->timer);
5471 ipr_cmd->fast_done(ipr_cmd);
5472 }
5473 return rc;
5474 }
5475
5476 /**
5477 * ipr_build_ioadl64 - Build a scatter/gather list and map the buffer
5478 * @ioa_cfg: ioa config struct
5479 * @ipr_cmd: ipr command struct
5480 *
5481 * Return value:
5482 * 0 on success / -1 on failure
5483 **/
5484 static int ipr_build_ioadl64(struct ipr_ioa_cfg *ioa_cfg,
5485 struct ipr_cmnd *ipr_cmd)
5486 {
5487 int i, nseg;
5488 struct scatterlist *sg;
5489 u32 length;
5490 u32 ioadl_flags = 0;
5491 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5492 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5493 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
5494
5495 length = scsi_bufflen(scsi_cmd);
5496 if (!length)
5497 return 0;
5498
5499 nseg = scsi_dma_map(scsi_cmd);
5500 if (nseg < 0) {
5501 if (printk_ratelimit())
5502 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5503 return -1;
5504 }
5505
5506 ipr_cmd->dma_use_sg = nseg;
5507
5508 ioarcb->data_transfer_length = cpu_to_be32(length);
5509 ioarcb->ioadl_len =
5510 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
5511
5512 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5513 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5514 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5515 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE)
5516 ioadl_flags = IPR_IOADL_FLAGS_READ;
5517
5518 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5519 ioadl64[i].flags = cpu_to_be32(ioadl_flags);
5520 ioadl64[i].data_len = cpu_to_be32(sg_dma_len(sg));
5521 ioadl64[i].address = cpu_to_be64(sg_dma_address(sg));
5522 }
5523
5524 ioadl64[i-1].flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5525 return 0;
5526 }
5527
5528 /**
5529 * ipr_build_ioadl - Build a scatter/gather list and map the buffer
5530 * @ioa_cfg: ioa config struct
5531 * @ipr_cmd: ipr command struct
5532 *
5533 * Return value:
5534 * 0 on success / -1 on failure
5535 **/
5536 static int ipr_build_ioadl(struct ipr_ioa_cfg *ioa_cfg,
5537 struct ipr_cmnd *ipr_cmd)
5538 {
5539 int i, nseg;
5540 struct scatterlist *sg;
5541 u32 length;
5542 u32 ioadl_flags = 0;
5543 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5544 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5545 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
5546
5547 length = scsi_bufflen(scsi_cmd);
5548 if (!length)
5549 return 0;
5550
5551 nseg = scsi_dma_map(scsi_cmd);
5552 if (nseg < 0) {
5553 dev_err(&ioa_cfg->pdev->dev, "pci_map_sg failed!\n");
5554 return -1;
5555 }
5556
5557 ipr_cmd->dma_use_sg = nseg;
5558
5559 if (scsi_cmd->sc_data_direction == DMA_TO_DEVICE) {
5560 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
5561 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
5562 ioarcb->data_transfer_length = cpu_to_be32(length);
5563 ioarcb->ioadl_len =
5564 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5565 } else if (scsi_cmd->sc_data_direction == DMA_FROM_DEVICE) {
5566 ioadl_flags = IPR_IOADL_FLAGS_READ;
5567 ioarcb->read_data_transfer_length = cpu_to_be32(length);
5568 ioarcb->read_ioadl_len =
5569 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
5570 }
5571
5572 if (ipr_cmd->dma_use_sg <= ARRAY_SIZE(ioarcb->u.add_data.u.ioadl)) {
5573 ioadl = ioarcb->u.add_data.u.ioadl;
5574 ioarcb->write_ioadl_addr = cpu_to_be32((ipr_cmd->dma_addr) +
5575 offsetof(struct ipr_ioarcb, u.add_data));
5576 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5577 }
5578
5579 scsi_for_each_sg(scsi_cmd, sg, ipr_cmd->dma_use_sg, i) {
5580 ioadl[i].flags_and_data_len =
5581 cpu_to_be32(ioadl_flags | sg_dma_len(sg));
5582 ioadl[i].address = cpu_to_be32(sg_dma_address(sg));
5583 }
5584
5585 ioadl[i-1].flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
5586 return 0;
5587 }
5588
5589 /**
5590 * ipr_get_task_attributes - Translate SPI Q-Tag to task attributes
5591 * @scsi_cmd: scsi command struct
5592 *
5593 * Return value:
5594 * task attributes
5595 **/
5596 static u8 ipr_get_task_attributes(struct scsi_cmnd *scsi_cmd)
5597 {
5598 u8 tag[2];
5599 u8 rc = IPR_FLAGS_LO_UNTAGGED_TASK;
5600
5601 if (scsi_populate_tag_msg(scsi_cmd, tag)) {
5602 switch (tag[0]) {
5603 case MSG_SIMPLE_TAG:
5604 rc = IPR_FLAGS_LO_SIMPLE_TASK;
5605 break;
5606 case MSG_HEAD_TAG:
5607 rc = IPR_FLAGS_LO_HEAD_OF_Q_TASK;
5608 break;
5609 case MSG_ORDERED_TAG:
5610 rc = IPR_FLAGS_LO_ORDERED_TASK;
5611 break;
5612 };
5613 }
5614
5615 return rc;
5616 }
5617
5618 /**
5619 * ipr_erp_done - Process completion of ERP for a device
5620 * @ipr_cmd: ipr command struct
5621 *
5622 * This function copies the sense buffer into the scsi_cmd
5623 * struct and pushes the scsi_done function.
5624 *
5625 * Return value:
5626 * nothing
5627 **/
5628 static void ipr_erp_done(struct ipr_cmnd *ipr_cmd)
5629 {
5630 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5631 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5632 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5633
5634 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5635 scsi_cmd->result |= (DID_ERROR << 16);
5636 scmd_printk(KERN_ERR, scsi_cmd,
5637 "Request Sense failed with IOASC: 0x%08X\n", ioasc);
5638 } else {
5639 memcpy(scsi_cmd->sense_buffer, ipr_cmd->sense_buffer,
5640 SCSI_SENSE_BUFFERSIZE);
5641 }
5642
5643 if (res) {
5644 if (!ipr_is_naca_model(res))
5645 res->needs_sync_complete = 1;
5646 res->in_erp = 0;
5647 }
5648 scsi_dma_unmap(ipr_cmd->scsi_cmd);
5649 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
5650 scsi_cmd->scsi_done(scsi_cmd);
5651 }
5652
5653 /**
5654 * ipr_reinit_ipr_cmnd_for_erp - Re-initialize a cmnd block to be used for ERP
5655 * @ipr_cmd: ipr command struct
5656 *
5657 * Return value:
5658 * none
5659 **/
5660 static void ipr_reinit_ipr_cmnd_for_erp(struct ipr_cmnd *ipr_cmd)
5661 {
5662 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
5663 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5664 dma_addr_t dma_addr = ipr_cmd->dma_addr;
5665
5666 memset(&ioarcb->cmd_pkt, 0, sizeof(struct ipr_cmd_pkt));
5667 ioarcb->data_transfer_length = 0;
5668 ioarcb->read_data_transfer_length = 0;
5669 ioarcb->ioadl_len = 0;
5670 ioarcb->read_ioadl_len = 0;
5671 ioasa->hdr.ioasc = 0;
5672 ioasa->hdr.residual_data_len = 0;
5673
5674 if (ipr_cmd->ioa_cfg->sis64)
5675 ioarcb->u.sis64_addr_data.data_ioadl_addr =
5676 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
5677 else {
5678 ioarcb->write_ioadl_addr =
5679 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
5680 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
5681 }
5682 }
5683
5684 /**
5685 * ipr_erp_request_sense - Send request sense to a device
5686 * @ipr_cmd: ipr command struct
5687 *
5688 * This function sends a request sense to a device as a result
5689 * of a check condition.
5690 *
5691 * Return value:
5692 * nothing
5693 **/
5694 static void ipr_erp_request_sense(struct ipr_cmnd *ipr_cmd)
5695 {
5696 struct ipr_cmd_pkt *cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5697 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5698
5699 if (IPR_IOASC_SENSE_KEY(ioasc) > 0) {
5700 ipr_erp_done(ipr_cmd);
5701 return;
5702 }
5703
5704 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5705
5706 cmd_pkt->request_type = IPR_RQTYPE_SCSICDB;
5707 cmd_pkt->cdb[0] = REQUEST_SENSE;
5708 cmd_pkt->cdb[4] = SCSI_SENSE_BUFFERSIZE;
5709 cmd_pkt->flags_hi |= IPR_FLAGS_HI_SYNC_OVERRIDE;
5710 cmd_pkt->flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
5711 cmd_pkt->timeout = cpu_to_be16(IPR_REQUEST_SENSE_TIMEOUT / HZ);
5712
5713 ipr_init_ioadl(ipr_cmd, ipr_cmd->sense_buffer_dma,
5714 SCSI_SENSE_BUFFERSIZE, IPR_IOADL_FLAGS_READ_LAST);
5715
5716 ipr_do_req(ipr_cmd, ipr_erp_done, ipr_timeout,
5717 IPR_REQUEST_SENSE_TIMEOUT * 2);
5718 }
5719
5720 /**
5721 * ipr_erp_cancel_all - Send cancel all to a device
5722 * @ipr_cmd: ipr command struct
5723 *
5724 * This function sends a cancel all to a device to clear the
5725 * queue. If we are running TCQ on the device, QERR is set to 1,
5726 * which means all outstanding ops have been dropped on the floor.
5727 * Cancel all will return them to us.
5728 *
5729 * Return value:
5730 * nothing
5731 **/
5732 static void ipr_erp_cancel_all(struct ipr_cmnd *ipr_cmd)
5733 {
5734 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5735 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5736 struct ipr_cmd_pkt *cmd_pkt;
5737
5738 res->in_erp = 1;
5739
5740 ipr_reinit_ipr_cmnd_for_erp(ipr_cmd);
5741
5742 if (!scsi_get_tag_type(scsi_cmd->device)) {
5743 ipr_erp_request_sense(ipr_cmd);
5744 return;
5745 }
5746
5747 cmd_pkt = &ipr_cmd->ioarcb.cmd_pkt;
5748 cmd_pkt->request_type = IPR_RQTYPE_IOACMD;
5749 cmd_pkt->cdb[0] = IPR_CANCEL_ALL_REQUESTS;
5750
5751 ipr_do_req(ipr_cmd, ipr_erp_request_sense, ipr_timeout,
5752 IPR_CANCEL_ALL_TIMEOUT);
5753 }
5754
5755 /**
5756 * ipr_dump_ioasa - Dump contents of IOASA
5757 * @ioa_cfg: ioa config struct
5758 * @ipr_cmd: ipr command struct
5759 * @res: resource entry struct
5760 *
5761 * This function is invoked by the interrupt handler when ops
5762 * fail. It will log the IOASA if appropriate. Only called
5763 * for GPDD ops.
5764 *
5765 * Return value:
5766 * none
5767 **/
5768 static void ipr_dump_ioasa(struct ipr_ioa_cfg *ioa_cfg,
5769 struct ipr_cmnd *ipr_cmd, struct ipr_resource_entry *res)
5770 {
5771 int i;
5772 u16 data_len;
5773 u32 ioasc, fd_ioasc;
5774 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5775 __be32 *ioasa_data = (__be32 *)ioasa;
5776 int error_index;
5777
5778 ioasc = be32_to_cpu(ioasa->hdr.ioasc) & IPR_IOASC_IOASC_MASK;
5779 fd_ioasc = be32_to_cpu(ioasa->hdr.fd_ioasc) & IPR_IOASC_IOASC_MASK;
5780
5781 if (0 == ioasc)
5782 return;
5783
5784 if (ioa_cfg->log_level < IPR_DEFAULT_LOG_LEVEL)
5785 return;
5786
5787 if (ioasc == IPR_IOASC_BUS_WAS_RESET && fd_ioasc)
5788 error_index = ipr_get_error(fd_ioasc);
5789 else
5790 error_index = ipr_get_error(ioasc);
5791
5792 if (ioa_cfg->log_level < IPR_MAX_LOG_LEVEL) {
5793 /* Don't log an error if the IOA already logged one */
5794 if (ioasa->hdr.ilid != 0)
5795 return;
5796
5797 if (!ipr_is_gscsi(res))
5798 return;
5799
5800 if (ipr_error_table[error_index].log_ioasa == 0)
5801 return;
5802 }
5803
5804 ipr_res_err(ioa_cfg, res, "%s\n", ipr_error_table[error_index].error);
5805
5806 data_len = be16_to_cpu(ioasa->hdr.ret_stat_len);
5807 if (ioa_cfg->sis64 && sizeof(struct ipr_ioasa64) < data_len)
5808 data_len = sizeof(struct ipr_ioasa64);
5809 else if (!ioa_cfg->sis64 && sizeof(struct ipr_ioasa) < data_len)
5810 data_len = sizeof(struct ipr_ioasa);
5811
5812 ipr_err("IOASA Dump:\n");
5813
5814 for (i = 0; i < data_len / 4; i += 4) {
5815 ipr_err("%08X: %08X %08X %08X %08X\n", i*4,
5816 be32_to_cpu(ioasa_data[i]),
5817 be32_to_cpu(ioasa_data[i+1]),
5818 be32_to_cpu(ioasa_data[i+2]),
5819 be32_to_cpu(ioasa_data[i+3]));
5820 }
5821 }
5822
5823 /**
5824 * ipr_gen_sense - Generate SCSI sense data from an IOASA
5825 * @ioasa: IOASA
5826 * @sense_buf: sense data buffer
5827 *
5828 * Return value:
5829 * none
5830 **/
5831 static void ipr_gen_sense(struct ipr_cmnd *ipr_cmd)
5832 {
5833 u32 failing_lba;
5834 u8 *sense_buf = ipr_cmd->scsi_cmd->sense_buffer;
5835 struct ipr_resource_entry *res = ipr_cmd->scsi_cmd->device->hostdata;
5836 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5837 u32 ioasc = be32_to_cpu(ioasa->hdr.ioasc);
5838
5839 memset(sense_buf, 0, SCSI_SENSE_BUFFERSIZE);
5840
5841 if (ioasc >= IPR_FIRST_DRIVER_IOASC)
5842 return;
5843
5844 ipr_cmd->scsi_cmd->result = SAM_STAT_CHECK_CONDITION;
5845
5846 if (ipr_is_vset_device(res) &&
5847 ioasc == IPR_IOASC_MED_DO_NOT_REALLOC &&
5848 ioasa->u.vset.failing_lba_hi != 0) {
5849 sense_buf[0] = 0x72;
5850 sense_buf[1] = IPR_IOASC_SENSE_KEY(ioasc);
5851 sense_buf[2] = IPR_IOASC_SENSE_CODE(ioasc);
5852 sense_buf[3] = IPR_IOASC_SENSE_QUAL(ioasc);
5853
5854 sense_buf[7] = 12;
5855 sense_buf[8] = 0;
5856 sense_buf[9] = 0x0A;
5857 sense_buf[10] = 0x80;
5858
5859 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_hi);
5860
5861 sense_buf[12] = (failing_lba & 0xff000000) >> 24;
5862 sense_buf[13] = (failing_lba & 0x00ff0000) >> 16;
5863 sense_buf[14] = (failing_lba & 0x0000ff00) >> 8;
5864 sense_buf[15] = failing_lba & 0x000000ff;
5865
5866 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5867
5868 sense_buf[16] = (failing_lba & 0xff000000) >> 24;
5869 sense_buf[17] = (failing_lba & 0x00ff0000) >> 16;
5870 sense_buf[18] = (failing_lba & 0x0000ff00) >> 8;
5871 sense_buf[19] = failing_lba & 0x000000ff;
5872 } else {
5873 sense_buf[0] = 0x70;
5874 sense_buf[2] = IPR_IOASC_SENSE_KEY(ioasc);
5875 sense_buf[12] = IPR_IOASC_SENSE_CODE(ioasc);
5876 sense_buf[13] = IPR_IOASC_SENSE_QUAL(ioasc);
5877
5878 /* Illegal request */
5879 if ((IPR_IOASC_SENSE_KEY(ioasc) == 0x05) &&
5880 (be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_FIELD_POINTER_VALID)) {
5881 sense_buf[7] = 10; /* additional length */
5882
5883 /* IOARCB was in error */
5884 if (IPR_IOASC_SENSE_CODE(ioasc) == 0x24)
5885 sense_buf[15] = 0xC0;
5886 else /* Parameter data was invalid */
5887 sense_buf[15] = 0x80;
5888
5889 sense_buf[16] =
5890 ((IPR_FIELD_POINTER_MASK &
5891 be32_to_cpu(ioasa->hdr.ioasc_specific)) >> 8) & 0xff;
5892 sense_buf[17] =
5893 (IPR_FIELD_POINTER_MASK &
5894 be32_to_cpu(ioasa->hdr.ioasc_specific)) & 0xff;
5895 } else {
5896 if (ioasc == IPR_IOASC_MED_DO_NOT_REALLOC) {
5897 if (ipr_is_vset_device(res))
5898 failing_lba = be32_to_cpu(ioasa->u.vset.failing_lba_lo);
5899 else
5900 failing_lba = be32_to_cpu(ioasa->u.dasd.failing_lba);
5901
5902 sense_buf[0] |= 0x80; /* Or in the Valid bit */
5903 sense_buf[3] = (failing_lba & 0xff000000) >> 24;
5904 sense_buf[4] = (failing_lba & 0x00ff0000) >> 16;
5905 sense_buf[5] = (failing_lba & 0x0000ff00) >> 8;
5906 sense_buf[6] = failing_lba & 0x000000ff;
5907 }
5908
5909 sense_buf[7] = 6; /* additional length */
5910 }
5911 }
5912 }
5913
5914 /**
5915 * ipr_get_autosense - Copy autosense data to sense buffer
5916 * @ipr_cmd: ipr command struct
5917 *
5918 * This function copies the autosense buffer to the buffer
5919 * in the scsi_cmd, if there is autosense available.
5920 *
5921 * Return value:
5922 * 1 if autosense was available / 0 if not
5923 **/
5924 static int ipr_get_autosense(struct ipr_cmnd *ipr_cmd)
5925 {
5926 struct ipr_ioasa *ioasa = &ipr_cmd->s.ioasa;
5927 struct ipr_ioasa64 *ioasa64 = &ipr_cmd->s.ioasa64;
5928
5929 if ((be32_to_cpu(ioasa->hdr.ioasc_specific) & IPR_AUTOSENSE_VALID) == 0)
5930 return 0;
5931
5932 if (ipr_cmd->ioa_cfg->sis64)
5933 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa64->auto_sense.data,
5934 min_t(u16, be16_to_cpu(ioasa64->auto_sense.auto_sense_len),
5935 SCSI_SENSE_BUFFERSIZE));
5936 else
5937 memcpy(ipr_cmd->scsi_cmd->sense_buffer, ioasa->auto_sense.data,
5938 min_t(u16, be16_to_cpu(ioasa->auto_sense.auto_sense_len),
5939 SCSI_SENSE_BUFFERSIZE));
5940 return 1;
5941 }
5942
5943 /**
5944 * ipr_erp_start - Process an error response for a SCSI op
5945 * @ioa_cfg: ioa config struct
5946 * @ipr_cmd: ipr command struct
5947 *
5948 * This function determines whether or not to initiate ERP
5949 * on the affected device.
5950 *
5951 * Return value:
5952 * nothing
5953 **/
5954 static void ipr_erp_start(struct ipr_ioa_cfg *ioa_cfg,
5955 struct ipr_cmnd *ipr_cmd)
5956 {
5957 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
5958 struct ipr_resource_entry *res = scsi_cmd->device->hostdata;
5959 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
5960 u32 masked_ioasc = ioasc & IPR_IOASC_IOASC_MASK;
5961
5962 if (!res) {
5963 ipr_scsi_eh_done(ipr_cmd);
5964 return;
5965 }
5966
5967 if (!ipr_is_gscsi(res) && masked_ioasc != IPR_IOASC_HW_DEV_BUS_STATUS)
5968 ipr_gen_sense(ipr_cmd);
5969
5970 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
5971
5972 switch (masked_ioasc) {
5973 case IPR_IOASC_ABORTED_CMD_TERM_BY_HOST:
5974 if (ipr_is_naca_model(res))
5975 scsi_cmd->result |= (DID_ABORT << 16);
5976 else
5977 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5978 break;
5979 case IPR_IOASC_IR_RESOURCE_HANDLE:
5980 case IPR_IOASC_IR_NO_CMDS_TO_2ND_IOA:
5981 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5982 break;
5983 case IPR_IOASC_HW_SEL_TIMEOUT:
5984 scsi_cmd->result |= (DID_NO_CONNECT << 16);
5985 if (!ipr_is_naca_model(res))
5986 res->needs_sync_complete = 1;
5987 break;
5988 case IPR_IOASC_SYNC_REQUIRED:
5989 if (!res->in_erp)
5990 res->needs_sync_complete = 1;
5991 scsi_cmd->result |= (DID_IMM_RETRY << 16);
5992 break;
5993 case IPR_IOASC_MED_DO_NOT_REALLOC: /* prevent retries */
5994 case IPR_IOASA_IR_DUAL_IOA_DISABLED:
5995 scsi_cmd->result |= (DID_PASSTHROUGH << 16);
5996 break;
5997 case IPR_IOASC_BUS_WAS_RESET:
5998 case IPR_IOASC_BUS_WAS_RESET_BY_OTHER:
5999 /*
6000 * Report the bus reset and ask for a retry. The device
6001 * will give CC/UA the next command.
6002 */
6003 if (!res->resetting_device)
6004 scsi_report_bus_reset(ioa_cfg->host, scsi_cmd->device->channel);
6005 scsi_cmd->result |= (DID_ERROR << 16);
6006 if (!ipr_is_naca_model(res))
6007 res->needs_sync_complete = 1;
6008 break;
6009 case IPR_IOASC_HW_DEV_BUS_STATUS:
6010 scsi_cmd->result |= IPR_IOASC_SENSE_STATUS(ioasc);
6011 if (IPR_IOASC_SENSE_STATUS(ioasc) == SAM_STAT_CHECK_CONDITION) {
6012 if (!ipr_get_autosense(ipr_cmd)) {
6013 if (!ipr_is_naca_model(res)) {
6014 ipr_erp_cancel_all(ipr_cmd);
6015 return;
6016 }
6017 }
6018 }
6019 if (!ipr_is_naca_model(res))
6020 res->needs_sync_complete = 1;
6021 break;
6022 case IPR_IOASC_NR_INIT_CMD_REQUIRED:
6023 break;
6024 default:
6025 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6026 scsi_cmd->result |= (DID_ERROR << 16);
6027 if (!ipr_is_vset_device(res) && !ipr_is_naca_model(res))
6028 res->needs_sync_complete = 1;
6029 break;
6030 }
6031
6032 scsi_dma_unmap(ipr_cmd->scsi_cmd);
6033 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6034 scsi_cmd->scsi_done(scsi_cmd);
6035 }
6036
6037 /**
6038 * ipr_scsi_done - mid-layer done function
6039 * @ipr_cmd: ipr command struct
6040 *
6041 * This function is invoked by the interrupt handler for
6042 * ops generated by the SCSI mid-layer
6043 *
6044 * Return value:
6045 * none
6046 **/
6047 static void ipr_scsi_done(struct ipr_cmnd *ipr_cmd)
6048 {
6049 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6050 struct scsi_cmnd *scsi_cmd = ipr_cmd->scsi_cmd;
6051 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6052 unsigned long hrrq_flags;
6053
6054 scsi_set_resid(scsi_cmd, be32_to_cpu(ipr_cmd->s.ioasa.hdr.residual_data_len));
6055
6056 if (likely(IPR_IOASC_SENSE_KEY(ioasc) == 0)) {
6057 scsi_dma_unmap(scsi_cmd);
6058
6059 spin_lock_irqsave(ipr_cmd->hrrq->lock, hrrq_flags);
6060 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6061 scsi_cmd->scsi_done(scsi_cmd);
6062 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, hrrq_flags);
6063 } else {
6064 spin_lock_irqsave(ipr_cmd->hrrq->lock, hrrq_flags);
6065 ipr_erp_start(ioa_cfg, ipr_cmd);
6066 spin_unlock_irqrestore(ipr_cmd->hrrq->lock, hrrq_flags);
6067 }
6068 }
6069
6070 /**
6071 * ipr_queuecommand - Queue a mid-layer request
6072 * @shost: scsi host struct
6073 * @scsi_cmd: scsi command struct
6074 *
6075 * This function queues a request generated by the mid-layer.
6076 *
6077 * Return value:
6078 * 0 on success
6079 * SCSI_MLQUEUE_DEVICE_BUSY if device is busy
6080 * SCSI_MLQUEUE_HOST_BUSY if host is busy
6081 **/
6082 static int ipr_queuecommand(struct Scsi_Host *shost,
6083 struct scsi_cmnd *scsi_cmd)
6084 {
6085 struct ipr_ioa_cfg *ioa_cfg;
6086 struct ipr_resource_entry *res;
6087 struct ipr_ioarcb *ioarcb;
6088 struct ipr_cmnd *ipr_cmd;
6089 unsigned long hrrq_flags, lock_flags;
6090 int rc;
6091 struct ipr_hrr_queue *hrrq;
6092 int hrrq_id;
6093
6094 ioa_cfg = (struct ipr_ioa_cfg *)shost->hostdata;
6095
6096 scsi_cmd->result = (DID_OK << 16);
6097 res = scsi_cmd->device->hostdata;
6098
6099 if (ipr_is_gata(res) && res->sata_port) {
6100 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
6101 rc = ata_sas_queuecmd(scsi_cmd, res->sata_port->ap);
6102 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
6103 return rc;
6104 }
6105
6106 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6107 hrrq = &ioa_cfg->hrrq[hrrq_id];
6108
6109 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6110 /*
6111 * We are currently blocking all devices due to a host reset
6112 * We have told the host to stop giving us new requests, but
6113 * ERP ops don't count. FIXME
6114 */
6115 if (unlikely(!hrrq->allow_cmds && !hrrq->ioa_is_dead && !hrrq->removing_ioa)) {
6116 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6117 return SCSI_MLQUEUE_HOST_BUSY;
6118 }
6119
6120 /*
6121 * FIXME - Create scsi_set_host_offline interface
6122 * and the ioa_is_dead check can be removed
6123 */
6124 if (unlikely(hrrq->ioa_is_dead || hrrq->removing_ioa || !res)) {
6125 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6126 goto err_nodev;
6127 }
6128
6129 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6130 if (ipr_cmd == NULL) {
6131 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6132 return SCSI_MLQUEUE_HOST_BUSY;
6133 }
6134 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6135
6136 ipr_init_ipr_cmnd(ipr_cmd, ipr_scsi_done);
6137 ioarcb = &ipr_cmd->ioarcb;
6138
6139 memcpy(ioarcb->cmd_pkt.cdb, scsi_cmd->cmnd, scsi_cmd->cmd_len);
6140 ipr_cmd->scsi_cmd = scsi_cmd;
6141 ipr_cmd->done = ipr_scsi_eh_done;
6142
6143 if (ipr_is_gscsi(res) || ipr_is_vset_device(res)) {
6144 if (scsi_cmd->underflow == 0)
6145 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6146
6147 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6148 if (ipr_is_gscsi(res))
6149 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_DELAY_AFTER_RST;
6150 ioarcb->cmd_pkt.flags_lo |= IPR_FLAGS_LO_ALIGNED_BFR;
6151 ioarcb->cmd_pkt.flags_lo |= ipr_get_task_attributes(scsi_cmd);
6152 }
6153
6154 if (scsi_cmd->cmnd[0] >= 0xC0 &&
6155 (!ipr_is_gscsi(res) || scsi_cmd->cmnd[0] == IPR_QUERY_RSRC_STATE)) {
6156 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6157 }
6158
6159 if (ioa_cfg->sis64)
6160 rc = ipr_build_ioadl64(ioa_cfg, ipr_cmd);
6161 else
6162 rc = ipr_build_ioadl(ioa_cfg, ipr_cmd);
6163
6164 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6165 if (unlikely(rc || (!hrrq->allow_cmds && !hrrq->ioa_is_dead))) {
6166 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6167 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6168 if (!rc)
6169 scsi_dma_unmap(scsi_cmd);
6170 return SCSI_MLQUEUE_HOST_BUSY;
6171 }
6172
6173 if (unlikely(hrrq->ioa_is_dead)) {
6174 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_free_q);
6175 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6176 scsi_dma_unmap(scsi_cmd);
6177 goto err_nodev;
6178 }
6179
6180 ioarcb->res_handle = res->res_handle;
6181 if (res->needs_sync_complete) {
6182 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_SYNC_COMPLETE;
6183 res->needs_sync_complete = 0;
6184 }
6185 list_add_tail(&ipr_cmd->queue, &hrrq->hrrq_pending_q);
6186 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6187 ipr_send_command(ipr_cmd);
6188 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6189 return 0;
6190
6191 err_nodev:
6192 spin_lock_irqsave(hrrq->lock, hrrq_flags);
6193 memset(scsi_cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
6194 scsi_cmd->result = (DID_NO_CONNECT << 16);
6195 scsi_cmd->scsi_done(scsi_cmd);
6196 spin_unlock_irqrestore(hrrq->lock, hrrq_flags);
6197 return 0;
6198 }
6199
6200 /**
6201 * ipr_ioctl - IOCTL handler
6202 * @sdev: scsi device struct
6203 * @cmd: IOCTL cmd
6204 * @arg: IOCTL arg
6205 *
6206 * Return value:
6207 * 0 on success / other on failure
6208 **/
6209 static int ipr_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6210 {
6211 struct ipr_resource_entry *res;
6212
6213 res = (struct ipr_resource_entry *)sdev->hostdata;
6214 if (res && ipr_is_gata(res)) {
6215 if (cmd == HDIO_GET_IDENTITY)
6216 return -ENOTTY;
6217 return ata_sas_scsi_ioctl(res->sata_port->ap, sdev, cmd, arg);
6218 }
6219
6220 return -EINVAL;
6221 }
6222
6223 /**
6224 * ipr_info - Get information about the card/driver
6225 * @scsi_host: scsi host struct
6226 *
6227 * Return value:
6228 * pointer to buffer with description string
6229 **/
6230 static const char *ipr_ioa_info(struct Scsi_Host *host)
6231 {
6232 static char buffer[512];
6233 struct ipr_ioa_cfg *ioa_cfg;
6234 unsigned long lock_flags = 0;
6235
6236 ioa_cfg = (struct ipr_ioa_cfg *) host->hostdata;
6237
6238 spin_lock_irqsave(host->host_lock, lock_flags);
6239 sprintf(buffer, "IBM %X Storage Adapter", ioa_cfg->type);
6240 spin_unlock_irqrestore(host->host_lock, lock_flags);
6241
6242 return buffer;
6243 }
6244
6245 static struct scsi_host_template driver_template = {
6246 .module = THIS_MODULE,
6247 .name = "IPR",
6248 .info = ipr_ioa_info,
6249 .ioctl = ipr_ioctl,
6250 .queuecommand = ipr_queuecommand,
6251 .eh_abort_handler = ipr_eh_abort,
6252 .eh_device_reset_handler = ipr_eh_dev_reset,
6253 .eh_host_reset_handler = ipr_eh_host_reset,
6254 .slave_alloc = ipr_slave_alloc,
6255 .slave_configure = ipr_slave_configure,
6256 .slave_destroy = ipr_slave_destroy,
6257 .target_alloc = ipr_target_alloc,
6258 .target_destroy = ipr_target_destroy,
6259 .change_queue_depth = ipr_change_queue_depth,
6260 .change_queue_type = ipr_change_queue_type,
6261 .bios_param = ipr_biosparam,
6262 .can_queue = IPR_MAX_COMMANDS,
6263 .this_id = -1,
6264 .sg_tablesize = IPR_MAX_SGLIST,
6265 .max_sectors = IPR_IOA_MAX_SECTORS,
6266 .cmd_per_lun = IPR_MAX_CMD_PER_LUN,
6267 .use_clustering = ENABLE_CLUSTERING,
6268 .shost_attrs = ipr_ioa_attrs,
6269 .sdev_attrs = ipr_dev_attrs,
6270 .proc_name = IPR_NAME
6271 };
6272
6273 /**
6274 * ipr_ata_phy_reset - libata phy_reset handler
6275 * @ap: ata port to reset
6276 *
6277 **/
6278 static void ipr_ata_phy_reset(struct ata_port *ap)
6279 {
6280 unsigned long flags;
6281 struct ipr_sata_port *sata_port = ap->private_data;
6282 struct ipr_resource_entry *res = sata_port->res;
6283 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6284 int rc;
6285
6286 ENTER;
6287 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6288 while (ioa_cfg->in_reset_reload) {
6289 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6290 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6291 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6292 }
6293
6294 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6295 goto out_unlock;
6296
6297 rc = ipr_device_reset(ioa_cfg, res);
6298
6299 if (rc) {
6300 ap->link.device[0].class = ATA_DEV_NONE;
6301 goto out_unlock;
6302 }
6303
6304 ap->link.device[0].class = res->ata_class;
6305 if (ap->link.device[0].class == ATA_DEV_UNKNOWN)
6306 ap->link.device[0].class = ATA_DEV_NONE;
6307
6308 out_unlock:
6309 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6310 LEAVE;
6311 }
6312
6313 /**
6314 * ipr_ata_post_internal - Cleanup after an internal command
6315 * @qc: ATA queued command
6316 *
6317 * Return value:
6318 * none
6319 **/
6320 static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
6321 {
6322 struct ipr_sata_port *sata_port = qc->ap->private_data;
6323 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6324 struct ipr_cmnd *ipr_cmd;
6325 struct ipr_hrr_queue *hrrq;
6326 unsigned long flags;
6327
6328 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6329 while (ioa_cfg->in_reset_reload) {
6330 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6331 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
6332 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
6333 }
6334
6335 for_each_hrrq(hrrq, ioa_cfg) {
6336 spin_lock(&hrrq->_lock);
6337 list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) {
6338 if (ipr_cmd->qc == qc) {
6339 ipr_device_reset(ioa_cfg, sata_port->res);
6340 break;
6341 }
6342 }
6343 spin_unlock(&hrrq->_lock);
6344 }
6345 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
6346 }
6347
6348 /**
6349 * ipr_copy_sata_tf - Copy a SATA taskfile to an IOA data structure
6350 * @regs: destination
6351 * @tf: source ATA taskfile
6352 *
6353 * Return value:
6354 * none
6355 **/
6356 static void ipr_copy_sata_tf(struct ipr_ioarcb_ata_regs *regs,
6357 struct ata_taskfile *tf)
6358 {
6359 regs->feature = tf->feature;
6360 regs->nsect = tf->nsect;
6361 regs->lbal = tf->lbal;
6362 regs->lbam = tf->lbam;
6363 regs->lbah = tf->lbah;
6364 regs->device = tf->device;
6365 regs->command = tf->command;
6366 regs->hob_feature = tf->hob_feature;
6367 regs->hob_nsect = tf->hob_nsect;
6368 regs->hob_lbal = tf->hob_lbal;
6369 regs->hob_lbam = tf->hob_lbam;
6370 regs->hob_lbah = tf->hob_lbah;
6371 regs->ctl = tf->ctl;
6372 }
6373
6374 /**
6375 * ipr_sata_done - done function for SATA commands
6376 * @ipr_cmd: ipr command struct
6377 *
6378 * This function is invoked by the interrupt handler for
6379 * ops generated by the SCSI mid-layer to SATA devices
6380 *
6381 * Return value:
6382 * none
6383 **/
6384 static void ipr_sata_done(struct ipr_cmnd *ipr_cmd)
6385 {
6386 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6387 struct ata_queued_cmd *qc = ipr_cmd->qc;
6388 struct ipr_sata_port *sata_port = qc->ap->private_data;
6389 struct ipr_resource_entry *res = sata_port->res;
6390 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
6391
6392 spin_lock(&ipr_cmd->hrrq->_lock);
6393 if (ipr_cmd->ioa_cfg->sis64)
6394 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa64.u.gata,
6395 sizeof(struct ipr_ioasa_gata));
6396 else
6397 memcpy(&sata_port->ioasa, &ipr_cmd->s.ioasa.u.gata,
6398 sizeof(struct ipr_ioasa_gata));
6399 ipr_dump_ioasa(ioa_cfg, ipr_cmd, res);
6400
6401 if (be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc_specific) & IPR_ATA_DEVICE_WAS_RESET)
6402 scsi_report_device_reset(ioa_cfg->host, res->bus, res->target);
6403
6404 if (IPR_IOASC_SENSE_KEY(ioasc) > RECOVERED_ERROR)
6405 qc->err_mask |= __ac_err_mask(sata_port->ioasa.status);
6406 else
6407 qc->err_mask |= ac_err_mask(sata_port->ioasa.status);
6408 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6409 spin_unlock(&ipr_cmd->hrrq->_lock);
6410 ata_qc_complete(qc);
6411 }
6412
6413 /**
6414 * ipr_build_ata_ioadl64 - Build an ATA scatter/gather list
6415 * @ipr_cmd: ipr command struct
6416 * @qc: ATA queued command
6417 *
6418 **/
6419 static void ipr_build_ata_ioadl64(struct ipr_cmnd *ipr_cmd,
6420 struct ata_queued_cmd *qc)
6421 {
6422 u32 ioadl_flags = 0;
6423 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6424 struct ipr_ioadl64_desc *ioadl64 = ipr_cmd->i.ioadl64;
6425 struct ipr_ioadl64_desc *last_ioadl64 = NULL;
6426 int len = qc->nbytes;
6427 struct scatterlist *sg;
6428 unsigned int si;
6429 dma_addr_t dma_addr = ipr_cmd->dma_addr;
6430
6431 if (len == 0)
6432 return;
6433
6434 if (qc->dma_dir == DMA_TO_DEVICE) {
6435 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6436 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6437 } else if (qc->dma_dir == DMA_FROM_DEVICE)
6438 ioadl_flags = IPR_IOADL_FLAGS_READ;
6439
6440 ioarcb->data_transfer_length = cpu_to_be32(len);
6441 ioarcb->ioadl_len =
6442 cpu_to_be32(sizeof(struct ipr_ioadl64_desc) * ipr_cmd->dma_use_sg);
6443 ioarcb->u.sis64_addr_data.data_ioadl_addr =
6444 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ata_ioadl));
6445
6446 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6447 ioadl64->flags = cpu_to_be32(ioadl_flags);
6448 ioadl64->data_len = cpu_to_be32(sg_dma_len(sg));
6449 ioadl64->address = cpu_to_be64(sg_dma_address(sg));
6450
6451 last_ioadl64 = ioadl64;
6452 ioadl64++;
6453 }
6454
6455 if (likely(last_ioadl64))
6456 last_ioadl64->flags |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6457 }
6458
6459 /**
6460 * ipr_build_ata_ioadl - Build an ATA scatter/gather list
6461 * @ipr_cmd: ipr command struct
6462 * @qc: ATA queued command
6463 *
6464 **/
6465 static void ipr_build_ata_ioadl(struct ipr_cmnd *ipr_cmd,
6466 struct ata_queued_cmd *qc)
6467 {
6468 u32 ioadl_flags = 0;
6469 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6470 struct ipr_ioadl_desc *ioadl = ipr_cmd->i.ioadl;
6471 struct ipr_ioadl_desc *last_ioadl = NULL;
6472 int len = qc->nbytes;
6473 struct scatterlist *sg;
6474 unsigned int si;
6475
6476 if (len == 0)
6477 return;
6478
6479 if (qc->dma_dir == DMA_TO_DEVICE) {
6480 ioadl_flags = IPR_IOADL_FLAGS_WRITE;
6481 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6482 ioarcb->data_transfer_length = cpu_to_be32(len);
6483 ioarcb->ioadl_len =
6484 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6485 } else if (qc->dma_dir == DMA_FROM_DEVICE) {
6486 ioadl_flags = IPR_IOADL_FLAGS_READ;
6487 ioarcb->read_data_transfer_length = cpu_to_be32(len);
6488 ioarcb->read_ioadl_len =
6489 cpu_to_be32(sizeof(struct ipr_ioadl_desc) * ipr_cmd->dma_use_sg);
6490 }
6491
6492 for_each_sg(qc->sg, sg, qc->n_elem, si) {
6493 ioadl->flags_and_data_len = cpu_to_be32(ioadl_flags | sg_dma_len(sg));
6494 ioadl->address = cpu_to_be32(sg_dma_address(sg));
6495
6496 last_ioadl = ioadl;
6497 ioadl++;
6498 }
6499
6500 if (likely(last_ioadl))
6501 last_ioadl->flags_and_data_len |= cpu_to_be32(IPR_IOADL_FLAGS_LAST);
6502 }
6503
6504 /**
6505 * ipr_qc_defer - Get a free ipr_cmd
6506 * @qc: queued command
6507 *
6508 * Return value:
6509 * 0 if success
6510 **/
6511 static int ipr_qc_defer(struct ata_queued_cmd *qc)
6512 {
6513 struct ata_port *ap = qc->ap;
6514 struct ipr_sata_port *sata_port = ap->private_data;
6515 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6516 struct ipr_cmnd *ipr_cmd;
6517 struct ipr_hrr_queue *hrrq;
6518 int hrrq_id;
6519
6520 hrrq_id = ipr_get_hrrq_index(ioa_cfg);
6521 hrrq = &ioa_cfg->hrrq[hrrq_id];
6522
6523 qc->lldd_task = NULL;
6524 spin_lock(&hrrq->_lock);
6525 if (unlikely(hrrq->ioa_is_dead)) {
6526 spin_unlock(&hrrq->_lock);
6527 return 0;
6528 }
6529
6530 if (unlikely(!hrrq->allow_cmds)) {
6531 spin_unlock(&hrrq->_lock);
6532 return ATA_DEFER_LINK;
6533 }
6534
6535 ipr_cmd = __ipr_get_free_ipr_cmnd(hrrq);
6536 if (ipr_cmd == NULL) {
6537 spin_unlock(&hrrq->_lock);
6538 return ATA_DEFER_LINK;
6539 }
6540
6541 qc->lldd_task = ipr_cmd;
6542 spin_unlock(&hrrq->_lock);
6543 return 0;
6544 }
6545
6546 /**
6547 * ipr_qc_issue - Issue a SATA qc to a device
6548 * @qc: queued command
6549 *
6550 * Return value:
6551 * 0 if success
6552 **/
6553 static unsigned int ipr_qc_issue(struct ata_queued_cmd *qc)
6554 {
6555 struct ata_port *ap = qc->ap;
6556 struct ipr_sata_port *sata_port = ap->private_data;
6557 struct ipr_resource_entry *res = sata_port->res;
6558 struct ipr_ioa_cfg *ioa_cfg = sata_port->ioa_cfg;
6559 struct ipr_cmnd *ipr_cmd;
6560 struct ipr_ioarcb *ioarcb;
6561 struct ipr_ioarcb_ata_regs *regs;
6562
6563 if (qc->lldd_task == NULL)
6564 ipr_qc_defer(qc);
6565
6566 ipr_cmd = qc->lldd_task;
6567 if (ipr_cmd == NULL)
6568 return AC_ERR_SYSTEM;
6569
6570 qc->lldd_task = NULL;
6571 spin_lock(&ipr_cmd->hrrq->_lock);
6572 if (unlikely(!ipr_cmd->hrrq->allow_cmds ||
6573 ipr_cmd->hrrq->ioa_is_dead)) {
6574 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6575 spin_unlock(&ipr_cmd->hrrq->_lock);
6576 return AC_ERR_SYSTEM;
6577 }
6578
6579 ipr_init_ipr_cmnd(ipr_cmd, ipr_lock_and_done);
6580 ioarcb = &ipr_cmd->ioarcb;
6581
6582 if (ioa_cfg->sis64) {
6583 regs = &ipr_cmd->i.ata_ioadl.regs;
6584 ioarcb->add_cmd_parms_offset = cpu_to_be16(sizeof(*ioarcb));
6585 } else
6586 regs = &ioarcb->u.add_data.u.regs;
6587
6588 memset(regs, 0, sizeof(*regs));
6589 ioarcb->add_cmd_parms_len = cpu_to_be16(sizeof(*regs));
6590
6591 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
6592 ipr_cmd->qc = qc;
6593 ipr_cmd->done = ipr_sata_done;
6594 ipr_cmd->ioarcb.res_handle = res->res_handle;
6595 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_ATA_PASSTHRU;
6596 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_LINK_DESC;
6597 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_NO_ULEN_CHK;
6598 ipr_cmd->dma_use_sg = qc->n_elem;
6599
6600 if (ioa_cfg->sis64)
6601 ipr_build_ata_ioadl64(ipr_cmd, qc);
6602 else
6603 ipr_build_ata_ioadl(ipr_cmd, qc);
6604
6605 regs->flags |= IPR_ATA_FLAG_STATUS_ON_GOOD_COMPLETION;
6606 ipr_copy_sata_tf(regs, &qc->tf);
6607 memcpy(ioarcb->cmd_pkt.cdb, qc->cdb, IPR_MAX_CDB_LEN);
6608 ipr_trc_hook(ipr_cmd, IPR_TRACE_START, IPR_GET_RES_PHYS_LOC(res));
6609
6610 switch (qc->tf.protocol) {
6611 case ATA_PROT_NODATA:
6612 case ATA_PROT_PIO:
6613 break;
6614
6615 case ATA_PROT_DMA:
6616 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6617 break;
6618
6619 case ATAPI_PROT_PIO:
6620 case ATAPI_PROT_NODATA:
6621 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6622 break;
6623
6624 case ATAPI_PROT_DMA:
6625 regs->flags |= IPR_ATA_FLAG_PACKET_CMD;
6626 regs->flags |= IPR_ATA_FLAG_XFER_TYPE_DMA;
6627 break;
6628
6629 default:
6630 WARN_ON(1);
6631 spin_unlock(&ipr_cmd->hrrq->_lock);
6632 return AC_ERR_INVALID;
6633 }
6634
6635 ipr_send_command(ipr_cmd);
6636 spin_unlock(&ipr_cmd->hrrq->_lock);
6637
6638 return 0;
6639 }
6640
6641 /**
6642 * ipr_qc_fill_rtf - Read result TF
6643 * @qc: ATA queued command
6644 *
6645 * Return value:
6646 * true
6647 **/
6648 static bool ipr_qc_fill_rtf(struct ata_queued_cmd *qc)
6649 {
6650 struct ipr_sata_port *sata_port = qc->ap->private_data;
6651 struct ipr_ioasa_gata *g = &sata_port->ioasa;
6652 struct ata_taskfile *tf = &qc->result_tf;
6653
6654 tf->feature = g->error;
6655 tf->nsect = g->nsect;
6656 tf->lbal = g->lbal;
6657 tf->lbam = g->lbam;
6658 tf->lbah = g->lbah;
6659 tf->device = g->device;
6660 tf->command = g->status;
6661 tf->hob_nsect = g->hob_nsect;
6662 tf->hob_lbal = g->hob_lbal;
6663 tf->hob_lbam = g->hob_lbam;
6664 tf->hob_lbah = g->hob_lbah;
6665 tf->ctl = g->alt_status;
6666
6667 return true;
6668 }
6669
6670 static struct ata_port_operations ipr_sata_ops = {
6671 .phy_reset = ipr_ata_phy_reset,
6672 .hardreset = ipr_sata_reset,
6673 .post_internal_cmd = ipr_ata_post_internal,
6674 .qc_prep = ata_noop_qc_prep,
6675 .qc_defer = ipr_qc_defer,
6676 .qc_issue = ipr_qc_issue,
6677 .qc_fill_rtf = ipr_qc_fill_rtf,
6678 .port_start = ata_sas_port_start,
6679 .port_stop = ata_sas_port_stop
6680 };
6681
6682 static struct ata_port_info sata_port_info = {
6683 .flags = ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
6684 .pio_mask = ATA_PIO4_ONLY,
6685 .mwdma_mask = ATA_MWDMA2,
6686 .udma_mask = ATA_UDMA6,
6687 .port_ops = &ipr_sata_ops
6688 };
6689
6690 #ifdef CONFIG_PPC_PSERIES
6691 static const u16 ipr_blocked_processors[] = {
6692 PVR_NORTHSTAR,
6693 PVR_PULSAR,
6694 PVR_POWER4,
6695 PVR_ICESTAR,
6696 PVR_SSTAR,
6697 PVR_POWER4p,
6698 PVR_630,
6699 PVR_630p
6700 };
6701
6702 /**
6703 * ipr_invalid_adapter - Determine if this adapter is supported on this hardware
6704 * @ioa_cfg: ioa cfg struct
6705 *
6706 * Adapters that use Gemstone revision < 3.1 do not work reliably on
6707 * certain pSeries hardware. This function determines if the given
6708 * adapter is in one of these confgurations or not.
6709 *
6710 * Return value:
6711 * 1 if adapter is not supported / 0 if adapter is supported
6712 **/
6713 static int ipr_invalid_adapter(struct ipr_ioa_cfg *ioa_cfg)
6714 {
6715 int i;
6716
6717 if ((ioa_cfg->type == 0x5702) && (ioa_cfg->pdev->revision < 4)) {
6718 for (i = 0; i < ARRAY_SIZE(ipr_blocked_processors); i++) {
6719 if (pvr_version_is(ipr_blocked_processors[i]))
6720 return 1;
6721 }
6722 }
6723 return 0;
6724 }
6725 #else
6726 #define ipr_invalid_adapter(ioa_cfg) 0
6727 #endif
6728
6729 /**
6730 * ipr_ioa_bringdown_done - IOA bring down completion.
6731 * @ipr_cmd: ipr command struct
6732 *
6733 * This function processes the completion of an adapter bring down.
6734 * It wakes any reset sleepers.
6735 *
6736 * Return value:
6737 * IPR_RC_JOB_RETURN
6738 **/
6739 static int ipr_ioa_bringdown_done(struct ipr_cmnd *ipr_cmd)
6740 {
6741 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6742
6743 ENTER;
6744 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
6745 ipr_trace;
6746 spin_unlock_irq(ioa_cfg->host->host_lock);
6747 scsi_unblock_requests(ioa_cfg->host);
6748 spin_lock_irq(ioa_cfg->host->host_lock);
6749 }
6750
6751 ioa_cfg->in_reset_reload = 0;
6752 ioa_cfg->reset_retries = 0;
6753 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6754 wake_up_all(&ioa_cfg->reset_wait_q);
6755 LEAVE;
6756
6757 return IPR_RC_JOB_RETURN;
6758 }
6759
6760 /**
6761 * ipr_ioa_reset_done - IOA reset completion.
6762 * @ipr_cmd: ipr command struct
6763 *
6764 * This function processes the completion of an adapter reset.
6765 * It schedules any necessary mid-layer add/removes and
6766 * wakes any reset sleepers.
6767 *
6768 * Return value:
6769 * IPR_RC_JOB_RETURN
6770 **/
6771 static int ipr_ioa_reset_done(struct ipr_cmnd *ipr_cmd)
6772 {
6773 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6774 struct ipr_resource_entry *res;
6775 struct ipr_hostrcb *hostrcb, *temp;
6776 int i = 0, j;
6777
6778 ENTER;
6779 ioa_cfg->in_reset_reload = 0;
6780 for (j = 0; j < ioa_cfg->hrrq_num; j++) {
6781 spin_lock(&ioa_cfg->hrrq[j]._lock);
6782 ioa_cfg->hrrq[j].allow_cmds = 1;
6783 spin_unlock(&ioa_cfg->hrrq[j]._lock);
6784 }
6785 wmb();
6786 ioa_cfg->reset_cmd = NULL;
6787 ioa_cfg->doorbell |= IPR_RUNTIME_RESET;
6788
6789 list_for_each_entry(res, &ioa_cfg->used_res_q, queue) {
6790 if (ioa_cfg->allow_ml_add_del && (res->add_to_ml || res->del_from_ml)) {
6791 ipr_trace;
6792 break;
6793 }
6794 }
6795 schedule_work(&ioa_cfg->work_q);
6796
6797 list_for_each_entry_safe(hostrcb, temp, &ioa_cfg->hostrcb_free_q, queue) {
6798 list_del(&hostrcb->queue);
6799 if (i++ < IPR_NUM_LOG_HCAMS)
6800 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_LOG_DATA, hostrcb);
6801 else
6802 ipr_send_hcam(ioa_cfg, IPR_HCAM_CDB_OP_CODE_CONFIG_CHANGE, hostrcb);
6803 }
6804
6805 scsi_report_bus_reset(ioa_cfg->host, IPR_VSET_BUS);
6806 dev_info(&ioa_cfg->pdev->dev, "IOA initialized.\n");
6807
6808 ioa_cfg->reset_retries = 0;
6809 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
6810 wake_up_all(&ioa_cfg->reset_wait_q);
6811
6812 spin_unlock(ioa_cfg->host->host_lock);
6813 scsi_unblock_requests(ioa_cfg->host);
6814 spin_lock(ioa_cfg->host->host_lock);
6815
6816 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds)
6817 scsi_block_requests(ioa_cfg->host);
6818
6819 LEAVE;
6820 return IPR_RC_JOB_RETURN;
6821 }
6822
6823 /**
6824 * ipr_set_sup_dev_dflt - Initialize a Set Supported Device buffer
6825 * @supported_dev: supported device struct
6826 * @vpids: vendor product id struct
6827 *
6828 * Return value:
6829 * none
6830 **/
6831 static void ipr_set_sup_dev_dflt(struct ipr_supported_device *supported_dev,
6832 struct ipr_std_inq_vpids *vpids)
6833 {
6834 memset(supported_dev, 0, sizeof(struct ipr_supported_device));
6835 memcpy(&supported_dev->vpids, vpids, sizeof(struct ipr_std_inq_vpids));
6836 supported_dev->num_records = 1;
6837 supported_dev->data_length =
6838 cpu_to_be16(sizeof(struct ipr_supported_device));
6839 supported_dev->reserved = 0;
6840 }
6841
6842 /**
6843 * ipr_set_supported_devs - Send Set Supported Devices for a device
6844 * @ipr_cmd: ipr command struct
6845 *
6846 * This function sends a Set Supported Devices to the adapter
6847 *
6848 * Return value:
6849 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
6850 **/
6851 static int ipr_set_supported_devs(struct ipr_cmnd *ipr_cmd)
6852 {
6853 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
6854 struct ipr_supported_device *supp_dev = &ioa_cfg->vpd_cbs->supp_dev;
6855 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
6856 struct ipr_resource_entry *res = ipr_cmd->u.res;
6857
6858 ipr_cmd->job_step = ipr_ioa_reset_done;
6859
6860 list_for_each_entry_continue(res, &ioa_cfg->used_res_q, queue) {
6861 if (!ipr_is_scsi_disk(res))
6862 continue;
6863
6864 ipr_cmd->u.res = res;
6865 ipr_set_sup_dev_dflt(supp_dev, &res->std_inq_data.vpids);
6866
6867 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
6868 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
6869 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
6870
6871 ioarcb->cmd_pkt.cdb[0] = IPR_SET_SUPPORTED_DEVICES;
6872 ioarcb->cmd_pkt.cdb[1] = IPR_SET_ALL_SUPPORTED_DEVICES;
6873 ioarcb->cmd_pkt.cdb[7] = (sizeof(struct ipr_supported_device) >> 8) & 0xff;
6874 ioarcb->cmd_pkt.cdb[8] = sizeof(struct ipr_supported_device) & 0xff;
6875
6876 ipr_init_ioadl(ipr_cmd,
6877 ioa_cfg->vpd_cbs_dma +
6878 offsetof(struct ipr_misc_cbs, supp_dev),
6879 sizeof(struct ipr_supported_device),
6880 IPR_IOADL_FLAGS_WRITE_LAST);
6881
6882 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
6883 IPR_SET_SUP_DEVICE_TIMEOUT);
6884
6885 if (!ioa_cfg->sis64)
6886 ipr_cmd->job_step = ipr_set_supported_devs;
6887 LEAVE;
6888 return IPR_RC_JOB_RETURN;
6889 }
6890
6891 LEAVE;
6892 return IPR_RC_JOB_CONTINUE;
6893 }
6894
6895 /**
6896 * ipr_get_mode_page - Locate specified mode page
6897 * @mode_pages: mode page buffer
6898 * @page_code: page code to find
6899 * @len: minimum required length for mode page
6900 *
6901 * Return value:
6902 * pointer to mode page / NULL on failure
6903 **/
6904 static void *ipr_get_mode_page(struct ipr_mode_pages *mode_pages,
6905 u32 page_code, u32 len)
6906 {
6907 struct ipr_mode_page_hdr *mode_hdr;
6908 u32 page_length;
6909 u32 length;
6910
6911 if (!mode_pages || (mode_pages->hdr.length == 0))
6912 return NULL;
6913
6914 length = (mode_pages->hdr.length + 1) - 4 - mode_pages->hdr.block_desc_len;
6915 mode_hdr = (struct ipr_mode_page_hdr *)
6916 (mode_pages->data + mode_pages->hdr.block_desc_len);
6917
6918 while (length) {
6919 if (IPR_GET_MODE_PAGE_CODE(mode_hdr) == page_code) {
6920 if (mode_hdr->page_length >= (len - sizeof(struct ipr_mode_page_hdr)))
6921 return mode_hdr;
6922 break;
6923 } else {
6924 page_length = (sizeof(struct ipr_mode_page_hdr) +
6925 mode_hdr->page_length);
6926 length -= page_length;
6927 mode_hdr = (struct ipr_mode_page_hdr *)
6928 ((unsigned long)mode_hdr + page_length);
6929 }
6930 }
6931 return NULL;
6932 }
6933
6934 /**
6935 * ipr_check_term_power - Check for term power errors
6936 * @ioa_cfg: ioa config struct
6937 * @mode_pages: IOAFP mode pages buffer
6938 *
6939 * Check the IOAFP's mode page 28 for term power errors
6940 *
6941 * Return value:
6942 * nothing
6943 **/
6944 static void ipr_check_term_power(struct ipr_ioa_cfg *ioa_cfg,
6945 struct ipr_mode_pages *mode_pages)
6946 {
6947 int i;
6948 int entry_length;
6949 struct ipr_dev_bus_entry *bus;
6950 struct ipr_mode_page28 *mode_page;
6951
6952 mode_page = ipr_get_mode_page(mode_pages, 0x28,
6953 sizeof(struct ipr_mode_page28));
6954
6955 entry_length = mode_page->entry_length;
6956
6957 bus = mode_page->bus;
6958
6959 for (i = 0; i < mode_page->num_entries; i++) {
6960 if (bus->flags & IPR_SCSI_ATTR_NO_TERM_PWR) {
6961 dev_err(&ioa_cfg->pdev->dev,
6962 "Term power is absent on scsi bus %d\n",
6963 bus->res_addr.bus);
6964 }
6965
6966 bus = (struct ipr_dev_bus_entry *)((char *)bus + entry_length);
6967 }
6968 }
6969
6970 /**
6971 * ipr_scsi_bus_speed_limit - Limit the SCSI speed based on SES table
6972 * @ioa_cfg: ioa config struct
6973 *
6974 * Looks through the config table checking for SES devices. If
6975 * the SES device is in the SES table indicating a maximum SCSI
6976 * bus speed, the speed is limited for the bus.
6977 *
6978 * Return value:
6979 * none
6980 **/
6981 static void ipr_scsi_bus_speed_limit(struct ipr_ioa_cfg *ioa_cfg)
6982 {
6983 u32 max_xfer_rate;
6984 int i;
6985
6986 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
6987 max_xfer_rate = ipr_get_max_scsi_speed(ioa_cfg, i,
6988 ioa_cfg->bus_attr[i].bus_width);
6989
6990 if (max_xfer_rate < ioa_cfg->bus_attr[i].max_xfer_rate)
6991 ioa_cfg->bus_attr[i].max_xfer_rate = max_xfer_rate;
6992 }
6993 }
6994
6995 /**
6996 * ipr_modify_ioafp_mode_page_28 - Modify IOAFP Mode Page 28
6997 * @ioa_cfg: ioa config struct
6998 * @mode_pages: mode page 28 buffer
6999 *
7000 * Updates mode page 28 based on driver configuration
7001 *
7002 * Return value:
7003 * none
7004 **/
7005 static void ipr_modify_ioafp_mode_page_28(struct ipr_ioa_cfg *ioa_cfg,
7006 struct ipr_mode_pages *mode_pages)
7007 {
7008 int i, entry_length;
7009 struct ipr_dev_bus_entry *bus;
7010 struct ipr_bus_attributes *bus_attr;
7011 struct ipr_mode_page28 *mode_page;
7012
7013 mode_page = ipr_get_mode_page(mode_pages, 0x28,
7014 sizeof(struct ipr_mode_page28));
7015
7016 entry_length = mode_page->entry_length;
7017
7018 /* Loop for each device bus entry */
7019 for (i = 0, bus = mode_page->bus;
7020 i < mode_page->num_entries;
7021 i++, bus = (struct ipr_dev_bus_entry *)((u8 *)bus + entry_length)) {
7022 if (bus->res_addr.bus > IPR_MAX_NUM_BUSES) {
7023 dev_err(&ioa_cfg->pdev->dev,
7024 "Invalid resource address reported: 0x%08X\n",
7025 IPR_GET_PHYS_LOC(bus->res_addr));
7026 continue;
7027 }
7028
7029 bus_attr = &ioa_cfg->bus_attr[i];
7030 bus->extended_reset_delay = IPR_EXTENDED_RESET_DELAY;
7031 bus->bus_width = bus_attr->bus_width;
7032 bus->max_xfer_rate = cpu_to_be32(bus_attr->max_xfer_rate);
7033 bus->flags &= ~IPR_SCSI_ATTR_QAS_MASK;
7034 if (bus_attr->qas_enabled)
7035 bus->flags |= IPR_SCSI_ATTR_ENABLE_QAS;
7036 else
7037 bus->flags |= IPR_SCSI_ATTR_DISABLE_QAS;
7038 }
7039 }
7040
7041 /**
7042 * ipr_build_mode_select - Build a mode select command
7043 * @ipr_cmd: ipr command struct
7044 * @res_handle: resource handle to send command to
7045 * @parm: Byte 2 of Mode Sense command
7046 * @dma_addr: DMA buffer address
7047 * @xfer_len: data transfer length
7048 *
7049 * Return value:
7050 * none
7051 **/
7052 static void ipr_build_mode_select(struct ipr_cmnd *ipr_cmd,
7053 __be32 res_handle, u8 parm,
7054 dma_addr_t dma_addr, u8 xfer_len)
7055 {
7056 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7057
7058 ioarcb->res_handle = res_handle;
7059 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7060 ioarcb->cmd_pkt.flags_hi |= IPR_FLAGS_HI_WRITE_NOT_READ;
7061 ioarcb->cmd_pkt.cdb[0] = MODE_SELECT;
7062 ioarcb->cmd_pkt.cdb[1] = parm;
7063 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7064
7065 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_WRITE_LAST);
7066 }
7067
7068 /**
7069 * ipr_ioafp_mode_select_page28 - Issue Mode Select Page 28 to IOA
7070 * @ipr_cmd: ipr command struct
7071 *
7072 * This function sets up the SCSI bus attributes and sends
7073 * a Mode Select for Page 28 to activate them.
7074 *
7075 * Return value:
7076 * IPR_RC_JOB_RETURN
7077 **/
7078 static int ipr_ioafp_mode_select_page28(struct ipr_cmnd *ipr_cmd)
7079 {
7080 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7081 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7082 int length;
7083
7084 ENTER;
7085 ipr_scsi_bus_speed_limit(ioa_cfg);
7086 ipr_check_term_power(ioa_cfg, mode_pages);
7087 ipr_modify_ioafp_mode_page_28(ioa_cfg, mode_pages);
7088 length = mode_pages->hdr.length + 1;
7089 mode_pages->hdr.length = 0;
7090
7091 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7092 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7093 length);
7094
7095 ipr_cmd->job_step = ipr_set_supported_devs;
7096 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7097 struct ipr_resource_entry, queue);
7098 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7099
7100 LEAVE;
7101 return IPR_RC_JOB_RETURN;
7102 }
7103
7104 /**
7105 * ipr_build_mode_sense - Builds a mode sense command
7106 * @ipr_cmd: ipr command struct
7107 * @res: resource entry struct
7108 * @parm: Byte 2 of mode sense command
7109 * @dma_addr: DMA address of mode sense buffer
7110 * @xfer_len: Size of DMA buffer
7111 *
7112 * Return value:
7113 * none
7114 **/
7115 static void ipr_build_mode_sense(struct ipr_cmnd *ipr_cmd,
7116 __be32 res_handle,
7117 u8 parm, dma_addr_t dma_addr, u8 xfer_len)
7118 {
7119 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7120
7121 ioarcb->res_handle = res_handle;
7122 ioarcb->cmd_pkt.cdb[0] = MODE_SENSE;
7123 ioarcb->cmd_pkt.cdb[2] = parm;
7124 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7125 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7126
7127 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7128 }
7129
7130 /**
7131 * ipr_reset_cmd_failed - Handle failure of IOA reset command
7132 * @ipr_cmd: ipr command struct
7133 *
7134 * This function handles the failure of an IOA bringup command.
7135 *
7136 * Return value:
7137 * IPR_RC_JOB_RETURN
7138 **/
7139 static int ipr_reset_cmd_failed(struct ipr_cmnd *ipr_cmd)
7140 {
7141 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7142 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7143
7144 dev_err(&ioa_cfg->pdev->dev,
7145 "0x%02X failed with IOASC: 0x%08X\n",
7146 ipr_cmd->ioarcb.cmd_pkt.cdb[0], ioasc);
7147
7148 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
7149 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
7150 return IPR_RC_JOB_RETURN;
7151 }
7152
7153 /**
7154 * ipr_reset_mode_sense_failed - Handle failure of IOAFP mode sense
7155 * @ipr_cmd: ipr command struct
7156 *
7157 * This function handles the failure of a Mode Sense to the IOAFP.
7158 * Some adapters do not handle all mode pages.
7159 *
7160 * Return value:
7161 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7162 **/
7163 static int ipr_reset_mode_sense_failed(struct ipr_cmnd *ipr_cmd)
7164 {
7165 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7166 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7167
7168 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7169 ipr_cmd->job_step = ipr_set_supported_devs;
7170 ipr_cmd->u.res = list_entry(ioa_cfg->used_res_q.next,
7171 struct ipr_resource_entry, queue);
7172 return IPR_RC_JOB_CONTINUE;
7173 }
7174
7175 return ipr_reset_cmd_failed(ipr_cmd);
7176 }
7177
7178 /**
7179 * ipr_ioafp_mode_sense_page28 - Issue Mode Sense Page 28 to IOA
7180 * @ipr_cmd: ipr command struct
7181 *
7182 * This function send a Page 28 mode sense to the IOA to
7183 * retrieve SCSI bus attributes.
7184 *
7185 * Return value:
7186 * IPR_RC_JOB_RETURN
7187 **/
7188 static int ipr_ioafp_mode_sense_page28(struct ipr_cmnd *ipr_cmd)
7189 {
7190 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7191
7192 ENTER;
7193 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7194 0x28, ioa_cfg->vpd_cbs_dma +
7195 offsetof(struct ipr_misc_cbs, mode_pages),
7196 sizeof(struct ipr_mode_pages));
7197
7198 ipr_cmd->job_step = ipr_ioafp_mode_select_page28;
7199 ipr_cmd->job_step_failed = ipr_reset_mode_sense_failed;
7200
7201 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7202
7203 LEAVE;
7204 return IPR_RC_JOB_RETURN;
7205 }
7206
7207 /**
7208 * ipr_ioafp_mode_select_page24 - Issue Mode Select to IOA
7209 * @ipr_cmd: ipr command struct
7210 *
7211 * This function enables dual IOA RAID support if possible.
7212 *
7213 * Return value:
7214 * IPR_RC_JOB_RETURN
7215 **/
7216 static int ipr_ioafp_mode_select_page24(struct ipr_cmnd *ipr_cmd)
7217 {
7218 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7219 struct ipr_mode_pages *mode_pages = &ioa_cfg->vpd_cbs->mode_pages;
7220 struct ipr_mode_page24 *mode_page;
7221 int length;
7222
7223 ENTER;
7224 mode_page = ipr_get_mode_page(mode_pages, 0x24,
7225 sizeof(struct ipr_mode_page24));
7226
7227 if (mode_page)
7228 mode_page->flags |= IPR_ENABLE_DUAL_IOA_AF;
7229
7230 length = mode_pages->hdr.length + 1;
7231 mode_pages->hdr.length = 0;
7232
7233 ipr_build_mode_select(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE), 0x11,
7234 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, mode_pages),
7235 length);
7236
7237 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7238 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7239
7240 LEAVE;
7241 return IPR_RC_JOB_RETURN;
7242 }
7243
7244 /**
7245 * ipr_reset_mode_sense_page24_failed - Handle failure of IOAFP mode sense
7246 * @ipr_cmd: ipr command struct
7247 *
7248 * This function handles the failure of a Mode Sense to the IOAFP.
7249 * Some adapters do not handle all mode pages.
7250 *
7251 * Return value:
7252 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7253 **/
7254 static int ipr_reset_mode_sense_page24_failed(struct ipr_cmnd *ipr_cmd)
7255 {
7256 u32 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
7257
7258 if (ioasc == IPR_IOASC_IR_INVALID_REQ_TYPE_OR_PKT) {
7259 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7260 return IPR_RC_JOB_CONTINUE;
7261 }
7262
7263 return ipr_reset_cmd_failed(ipr_cmd);
7264 }
7265
7266 /**
7267 * ipr_ioafp_mode_sense_page24 - Issue Page 24 Mode Sense to IOA
7268 * @ipr_cmd: ipr command struct
7269 *
7270 * This function send a mode sense to the IOA to retrieve
7271 * the IOA Advanced Function Control mode page.
7272 *
7273 * Return value:
7274 * IPR_RC_JOB_RETURN
7275 **/
7276 static int ipr_ioafp_mode_sense_page24(struct ipr_cmnd *ipr_cmd)
7277 {
7278 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7279
7280 ENTER;
7281 ipr_build_mode_sense(ipr_cmd, cpu_to_be32(IPR_IOA_RES_HANDLE),
7282 0x24, ioa_cfg->vpd_cbs_dma +
7283 offsetof(struct ipr_misc_cbs, mode_pages),
7284 sizeof(struct ipr_mode_pages));
7285
7286 ipr_cmd->job_step = ipr_ioafp_mode_select_page24;
7287 ipr_cmd->job_step_failed = ipr_reset_mode_sense_page24_failed;
7288
7289 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7290
7291 LEAVE;
7292 return IPR_RC_JOB_RETURN;
7293 }
7294
7295 /**
7296 * ipr_init_res_table - Initialize the resource table
7297 * @ipr_cmd: ipr command struct
7298 *
7299 * This function looks through the existing resource table, comparing
7300 * it with the config table. This function will take care of old/new
7301 * devices and schedule adding/removing them from the mid-layer
7302 * as appropriate.
7303 *
7304 * Return value:
7305 * IPR_RC_JOB_CONTINUE
7306 **/
7307 static int ipr_init_res_table(struct ipr_cmnd *ipr_cmd)
7308 {
7309 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7310 struct ipr_resource_entry *res, *temp;
7311 struct ipr_config_table_entry_wrapper cfgtew;
7312 int entries, found, flag, i;
7313 LIST_HEAD(old_res);
7314
7315 ENTER;
7316 if (ioa_cfg->sis64)
7317 flag = ioa_cfg->u.cfg_table64->hdr64.flags;
7318 else
7319 flag = ioa_cfg->u.cfg_table->hdr.flags;
7320
7321 if (flag & IPR_UCODE_DOWNLOAD_REQ)
7322 dev_err(&ioa_cfg->pdev->dev, "Microcode download required\n");
7323
7324 list_for_each_entry_safe(res, temp, &ioa_cfg->used_res_q, queue)
7325 list_move_tail(&res->queue, &old_res);
7326
7327 if (ioa_cfg->sis64)
7328 entries = be16_to_cpu(ioa_cfg->u.cfg_table64->hdr64.num_entries);
7329 else
7330 entries = ioa_cfg->u.cfg_table->hdr.num_entries;
7331
7332 for (i = 0; i < entries; i++) {
7333 if (ioa_cfg->sis64)
7334 cfgtew.u.cfgte64 = &ioa_cfg->u.cfg_table64->dev[i];
7335 else
7336 cfgtew.u.cfgte = &ioa_cfg->u.cfg_table->dev[i];
7337 found = 0;
7338
7339 list_for_each_entry_safe(res, temp, &old_res, queue) {
7340 if (ipr_is_same_device(res, &cfgtew)) {
7341 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7342 found = 1;
7343 break;
7344 }
7345 }
7346
7347 if (!found) {
7348 if (list_empty(&ioa_cfg->free_res_q)) {
7349 dev_err(&ioa_cfg->pdev->dev, "Too many devices attached\n");
7350 break;
7351 }
7352
7353 found = 1;
7354 res = list_entry(ioa_cfg->free_res_q.next,
7355 struct ipr_resource_entry, queue);
7356 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7357 ipr_init_res_entry(res, &cfgtew);
7358 res->add_to_ml = 1;
7359 } else if (res->sdev && (ipr_is_vset_device(res) || ipr_is_scsi_disk(res)))
7360 res->sdev->allow_restart = 1;
7361
7362 if (found)
7363 ipr_update_res_entry(res, &cfgtew);
7364 }
7365
7366 list_for_each_entry_safe(res, temp, &old_res, queue) {
7367 if (res->sdev) {
7368 res->del_from_ml = 1;
7369 res->res_handle = IPR_INVALID_RES_HANDLE;
7370 list_move_tail(&res->queue, &ioa_cfg->used_res_q);
7371 }
7372 }
7373
7374 list_for_each_entry_safe(res, temp, &old_res, queue) {
7375 ipr_clear_res_target(res);
7376 list_move_tail(&res->queue, &ioa_cfg->free_res_q);
7377 }
7378
7379 if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
7380 ipr_cmd->job_step = ipr_ioafp_mode_sense_page24;
7381 else
7382 ipr_cmd->job_step = ipr_ioafp_mode_sense_page28;
7383
7384 LEAVE;
7385 return IPR_RC_JOB_CONTINUE;
7386 }
7387
7388 /**
7389 * ipr_ioafp_query_ioa_cfg - Send a Query IOA Config to the adapter.
7390 * @ipr_cmd: ipr command struct
7391 *
7392 * This function sends a Query IOA Configuration command
7393 * to the adapter to retrieve the IOA configuration table.
7394 *
7395 * Return value:
7396 * IPR_RC_JOB_RETURN
7397 **/
7398 static int ipr_ioafp_query_ioa_cfg(struct ipr_cmnd *ipr_cmd)
7399 {
7400 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7401 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7402 struct ipr_inquiry_page3 *ucode_vpd = &ioa_cfg->vpd_cbs->page3_data;
7403 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7404
7405 ENTER;
7406 if (cap->cap & IPR_CAP_DUAL_IOA_RAID)
7407 ioa_cfg->dual_raid = 1;
7408 dev_info(&ioa_cfg->pdev->dev, "Adapter firmware version: %02X%02X%02X%02X\n",
7409 ucode_vpd->major_release, ucode_vpd->card_type,
7410 ucode_vpd->minor_release[0], ucode_vpd->minor_release[1]);
7411 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7412 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7413
7414 ioarcb->cmd_pkt.cdb[0] = IPR_QUERY_IOA_CONFIG;
7415 ioarcb->cmd_pkt.cdb[6] = (ioa_cfg->cfg_table_size >> 16) & 0xff;
7416 ioarcb->cmd_pkt.cdb[7] = (ioa_cfg->cfg_table_size >> 8) & 0xff;
7417 ioarcb->cmd_pkt.cdb[8] = ioa_cfg->cfg_table_size & 0xff;
7418
7419 ipr_init_ioadl(ipr_cmd, ioa_cfg->cfg_table_dma, ioa_cfg->cfg_table_size,
7420 IPR_IOADL_FLAGS_READ_LAST);
7421
7422 ipr_cmd->job_step = ipr_init_res_table;
7423
7424 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7425
7426 LEAVE;
7427 return IPR_RC_JOB_RETURN;
7428 }
7429
7430 /**
7431 * ipr_ioafp_inquiry - Send an Inquiry to the adapter.
7432 * @ipr_cmd: ipr command struct
7433 *
7434 * This utility function sends an inquiry to the adapter.
7435 *
7436 * Return value:
7437 * none
7438 **/
7439 static void ipr_ioafp_inquiry(struct ipr_cmnd *ipr_cmd, u8 flags, u8 page,
7440 dma_addr_t dma_addr, u8 xfer_len)
7441 {
7442 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7443
7444 ENTER;
7445 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
7446 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7447
7448 ioarcb->cmd_pkt.cdb[0] = INQUIRY;
7449 ioarcb->cmd_pkt.cdb[1] = flags;
7450 ioarcb->cmd_pkt.cdb[2] = page;
7451 ioarcb->cmd_pkt.cdb[4] = xfer_len;
7452
7453 ipr_init_ioadl(ipr_cmd, dma_addr, xfer_len, IPR_IOADL_FLAGS_READ_LAST);
7454
7455 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, IPR_INTERNAL_TIMEOUT);
7456 LEAVE;
7457 }
7458
7459 /**
7460 * ipr_inquiry_page_supported - Is the given inquiry page supported
7461 * @page0: inquiry page 0 buffer
7462 * @page: page code.
7463 *
7464 * This function determines if the specified inquiry page is supported.
7465 *
7466 * Return value:
7467 * 1 if page is supported / 0 if not
7468 **/
7469 static int ipr_inquiry_page_supported(struct ipr_inquiry_page0 *page0, u8 page)
7470 {
7471 int i;
7472
7473 for (i = 0; i < min_t(u8, page0->len, IPR_INQUIRY_PAGE0_ENTRIES); i++)
7474 if (page0->page[i] == page)
7475 return 1;
7476
7477 return 0;
7478 }
7479
7480 /**
7481 * ipr_ioafp_cap_inquiry - Send a Page 0xD0 Inquiry to the adapter.
7482 * @ipr_cmd: ipr command struct
7483 *
7484 * This function sends a Page 0xD0 inquiry to the adapter
7485 * to retrieve adapter capabilities.
7486 *
7487 * Return value:
7488 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7489 **/
7490 static int ipr_ioafp_cap_inquiry(struct ipr_cmnd *ipr_cmd)
7491 {
7492 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7493 struct ipr_inquiry_page0 *page0 = &ioa_cfg->vpd_cbs->page0_data;
7494 struct ipr_inquiry_cap *cap = &ioa_cfg->vpd_cbs->cap;
7495
7496 ENTER;
7497 ipr_cmd->job_step = ipr_ioafp_query_ioa_cfg;
7498 memset(cap, 0, sizeof(*cap));
7499
7500 if (ipr_inquiry_page_supported(page0, 0xD0)) {
7501 ipr_ioafp_inquiry(ipr_cmd, 1, 0xD0,
7502 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, cap),
7503 sizeof(struct ipr_inquiry_cap));
7504 return IPR_RC_JOB_RETURN;
7505 }
7506
7507 LEAVE;
7508 return IPR_RC_JOB_CONTINUE;
7509 }
7510
7511 /**
7512 * ipr_ioafp_page3_inquiry - Send a Page 3 Inquiry to the adapter.
7513 * @ipr_cmd: ipr command struct
7514 *
7515 * This function sends a Page 3 inquiry to the adapter
7516 * to retrieve software VPD information.
7517 *
7518 * Return value:
7519 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7520 **/
7521 static int ipr_ioafp_page3_inquiry(struct ipr_cmnd *ipr_cmd)
7522 {
7523 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7524
7525 ENTER;
7526
7527 ipr_cmd->job_step = ipr_ioafp_cap_inquiry;
7528
7529 ipr_ioafp_inquiry(ipr_cmd, 1, 3,
7530 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page3_data),
7531 sizeof(struct ipr_inquiry_page3));
7532
7533 LEAVE;
7534 return IPR_RC_JOB_RETURN;
7535 }
7536
7537 /**
7538 * ipr_ioafp_page0_inquiry - Send a Page 0 Inquiry to the adapter.
7539 * @ipr_cmd: ipr command struct
7540 *
7541 * This function sends a Page 0 inquiry to the adapter
7542 * to retrieve supported inquiry pages.
7543 *
7544 * Return value:
7545 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7546 **/
7547 static int ipr_ioafp_page0_inquiry(struct ipr_cmnd *ipr_cmd)
7548 {
7549 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7550 char type[5];
7551
7552 ENTER;
7553
7554 /* Grab the type out of the VPD and store it away */
7555 memcpy(type, ioa_cfg->vpd_cbs->ioa_vpd.std_inq_data.vpids.product_id, 4);
7556 type[4] = '\0';
7557 ioa_cfg->type = simple_strtoul((char *)type, NULL, 16);
7558
7559 ipr_cmd->job_step = ipr_ioafp_page3_inquiry;
7560
7561 ipr_ioafp_inquiry(ipr_cmd, 1, 0,
7562 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, page0_data),
7563 sizeof(struct ipr_inquiry_page0));
7564
7565 LEAVE;
7566 return IPR_RC_JOB_RETURN;
7567 }
7568
7569 /**
7570 * ipr_ioafp_std_inquiry - Send a Standard Inquiry to the adapter.
7571 * @ipr_cmd: ipr command struct
7572 *
7573 * This function sends a standard inquiry to the adapter.
7574 *
7575 * Return value:
7576 * IPR_RC_JOB_RETURN
7577 **/
7578 static int ipr_ioafp_std_inquiry(struct ipr_cmnd *ipr_cmd)
7579 {
7580 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7581
7582 ENTER;
7583 ipr_cmd->job_step = ipr_ioafp_page0_inquiry;
7584
7585 ipr_ioafp_inquiry(ipr_cmd, 0, 0,
7586 ioa_cfg->vpd_cbs_dma + offsetof(struct ipr_misc_cbs, ioa_vpd),
7587 sizeof(struct ipr_ioa_vpd));
7588
7589 LEAVE;
7590 return IPR_RC_JOB_RETURN;
7591 }
7592
7593 /**
7594 * ipr_ioafp_identify_hrrq - Send Identify Host RRQ.
7595 * @ipr_cmd: ipr command struct
7596 *
7597 * This function send an Identify Host Request Response Queue
7598 * command to establish the HRRQ with the adapter.
7599 *
7600 * Return value:
7601 * IPR_RC_JOB_RETURN
7602 **/
7603 static int ipr_ioafp_identify_hrrq(struct ipr_cmnd *ipr_cmd)
7604 {
7605 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7606 struct ipr_ioarcb *ioarcb = &ipr_cmd->ioarcb;
7607 struct ipr_hrr_queue *hrrq;
7608
7609 ENTER;
7610 ipr_cmd->job_step = ipr_ioafp_std_inquiry;
7611 dev_info(&ioa_cfg->pdev->dev, "Starting IOA initialization sequence.\n");
7612
7613 if (ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num) {
7614 hrrq = &ioa_cfg->hrrq[ioa_cfg->identify_hrrq_index];
7615
7616 ioarcb->cmd_pkt.cdb[0] = IPR_ID_HOST_RR_Q;
7617 ioarcb->res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
7618
7619 ioarcb->cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
7620 if (ioa_cfg->sis64)
7621 ioarcb->cmd_pkt.cdb[1] = 0x1;
7622
7623 if (ioa_cfg->nvectors == 1)
7624 ioarcb->cmd_pkt.cdb[1] &= ~IPR_ID_HRRQ_SELE_ENABLE;
7625 else
7626 ioarcb->cmd_pkt.cdb[1] |= IPR_ID_HRRQ_SELE_ENABLE;
7627
7628 ioarcb->cmd_pkt.cdb[2] =
7629 ((u64) hrrq->host_rrq_dma >> 24) & 0xff;
7630 ioarcb->cmd_pkt.cdb[3] =
7631 ((u64) hrrq->host_rrq_dma >> 16) & 0xff;
7632 ioarcb->cmd_pkt.cdb[4] =
7633 ((u64) hrrq->host_rrq_dma >> 8) & 0xff;
7634 ioarcb->cmd_pkt.cdb[5] =
7635 ((u64) hrrq->host_rrq_dma) & 0xff;
7636 ioarcb->cmd_pkt.cdb[7] =
7637 ((sizeof(u32) * hrrq->size) >> 8) & 0xff;
7638 ioarcb->cmd_pkt.cdb[8] =
7639 (sizeof(u32) * hrrq->size) & 0xff;
7640
7641 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7642 ioarcb->cmd_pkt.cdb[9] =
7643 ioa_cfg->identify_hrrq_index;
7644
7645 if (ioa_cfg->sis64) {
7646 ioarcb->cmd_pkt.cdb[10] =
7647 ((u64) hrrq->host_rrq_dma >> 56) & 0xff;
7648 ioarcb->cmd_pkt.cdb[11] =
7649 ((u64) hrrq->host_rrq_dma >> 48) & 0xff;
7650 ioarcb->cmd_pkt.cdb[12] =
7651 ((u64) hrrq->host_rrq_dma >> 40) & 0xff;
7652 ioarcb->cmd_pkt.cdb[13] =
7653 ((u64) hrrq->host_rrq_dma >> 32) & 0xff;
7654 }
7655
7656 if (ioarcb->cmd_pkt.cdb[1] & IPR_ID_HRRQ_SELE_ENABLE)
7657 ioarcb->cmd_pkt.cdb[14] =
7658 ioa_cfg->identify_hrrq_index;
7659
7660 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
7661 IPR_INTERNAL_TIMEOUT);
7662
7663 if (++ioa_cfg->identify_hrrq_index < ioa_cfg->hrrq_num)
7664 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7665
7666 LEAVE;
7667 return IPR_RC_JOB_RETURN;
7668 }
7669
7670 LEAVE;
7671 return IPR_RC_JOB_CONTINUE;
7672 }
7673
7674 /**
7675 * ipr_reset_timer_done - Adapter reset timer function
7676 * @ipr_cmd: ipr command struct
7677 *
7678 * Description: This function is used in adapter reset processing
7679 * for timing events. If the reset_cmd pointer in the IOA
7680 * config struct is not this adapter's we are doing nested
7681 * resets and fail_all_ops will take care of freeing the
7682 * command block.
7683 *
7684 * Return value:
7685 * none
7686 **/
7687 static void ipr_reset_timer_done(struct ipr_cmnd *ipr_cmd)
7688 {
7689 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7690 unsigned long lock_flags = 0;
7691
7692 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
7693
7694 if (ioa_cfg->reset_cmd == ipr_cmd) {
7695 list_del(&ipr_cmd->queue);
7696 ipr_cmd->done(ipr_cmd);
7697 }
7698
7699 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
7700 }
7701
7702 /**
7703 * ipr_reset_start_timer - Start a timer for adapter reset job
7704 * @ipr_cmd: ipr command struct
7705 * @timeout: timeout value
7706 *
7707 * Description: This function is used in adapter reset processing
7708 * for timing events. If the reset_cmd pointer in the IOA
7709 * config struct is not this adapter's we are doing nested
7710 * resets and fail_all_ops will take care of freeing the
7711 * command block.
7712 *
7713 * Return value:
7714 * none
7715 **/
7716 static void ipr_reset_start_timer(struct ipr_cmnd *ipr_cmd,
7717 unsigned long timeout)
7718 {
7719
7720 ENTER;
7721 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7722 ipr_cmd->done = ipr_reset_ioa_job;
7723
7724 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7725 ipr_cmd->timer.expires = jiffies + timeout;
7726 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_reset_timer_done;
7727 add_timer(&ipr_cmd->timer);
7728 }
7729
7730 /**
7731 * ipr_init_ioa_mem - Initialize ioa_cfg control block
7732 * @ioa_cfg: ioa cfg struct
7733 *
7734 * Return value:
7735 * nothing
7736 **/
7737 static void ipr_init_ioa_mem(struct ipr_ioa_cfg *ioa_cfg)
7738 {
7739 struct ipr_hrr_queue *hrrq;
7740
7741 for_each_hrrq(hrrq, ioa_cfg) {
7742 spin_lock(&hrrq->_lock);
7743 memset(hrrq->host_rrq, 0, sizeof(u32) * hrrq->size);
7744
7745 /* Initialize Host RRQ pointers */
7746 hrrq->hrrq_start = hrrq->host_rrq;
7747 hrrq->hrrq_end = &hrrq->host_rrq[hrrq->size - 1];
7748 hrrq->hrrq_curr = hrrq->hrrq_start;
7749 hrrq->toggle_bit = 1;
7750 spin_unlock(&hrrq->_lock);
7751 }
7752 wmb();
7753
7754 ioa_cfg->identify_hrrq_index = 0;
7755 if (ioa_cfg->hrrq_num == 1)
7756 atomic_set(&ioa_cfg->hrrq_index, 0);
7757 else
7758 atomic_set(&ioa_cfg->hrrq_index, 1);
7759
7760 /* Zero out config table */
7761 memset(ioa_cfg->u.cfg_table, 0, ioa_cfg->cfg_table_size);
7762 }
7763
7764 /**
7765 * ipr_reset_next_stage - Process IPL stage change based on feedback register.
7766 * @ipr_cmd: ipr command struct
7767 *
7768 * Return value:
7769 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
7770 **/
7771 static int ipr_reset_next_stage(struct ipr_cmnd *ipr_cmd)
7772 {
7773 unsigned long stage, stage_time;
7774 u32 feedback;
7775 volatile u32 int_reg;
7776 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7777 u64 maskval = 0;
7778
7779 feedback = readl(ioa_cfg->regs.init_feedback_reg);
7780 stage = feedback & IPR_IPL_INIT_STAGE_MASK;
7781 stage_time = feedback & IPR_IPL_INIT_STAGE_TIME_MASK;
7782
7783 ipr_dbg("IPL stage = 0x%lx, IPL stage time = %ld\n", stage, stage_time);
7784
7785 /* sanity check the stage_time value */
7786 if (stage_time == 0)
7787 stage_time = IPR_IPL_INIT_DEFAULT_STAGE_TIME;
7788 else if (stage_time < IPR_IPL_INIT_MIN_STAGE_TIME)
7789 stage_time = IPR_IPL_INIT_MIN_STAGE_TIME;
7790 else if (stage_time > IPR_LONG_OPERATIONAL_TIMEOUT)
7791 stage_time = IPR_LONG_OPERATIONAL_TIMEOUT;
7792
7793 if (stage == IPR_IPL_INIT_STAGE_UNKNOWN) {
7794 writel(IPR_PCII_IPL_STAGE_CHANGE, ioa_cfg->regs.set_interrupt_mask_reg);
7795 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7796 stage_time = ioa_cfg->transop_timeout;
7797 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7798 } else if (stage == IPR_IPL_INIT_STAGE_TRANSOP) {
7799 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7800 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7801 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7802 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7803 maskval = (maskval << 32) | IPR_PCII_IOA_TRANS_TO_OPER;
7804 writeq(maskval, ioa_cfg->regs.set_interrupt_mask_reg);
7805 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7806 return IPR_RC_JOB_CONTINUE;
7807 }
7808 }
7809
7810 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7811 ipr_cmd->timer.expires = jiffies + stage_time * HZ;
7812 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7813 ipr_cmd->done = ipr_reset_ioa_job;
7814 add_timer(&ipr_cmd->timer);
7815
7816 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7817
7818 return IPR_RC_JOB_RETURN;
7819 }
7820
7821 /**
7822 * ipr_reset_enable_ioa - Enable the IOA following a reset.
7823 * @ipr_cmd: ipr command struct
7824 *
7825 * This function reinitializes some control blocks and
7826 * enables destructive diagnostics on the adapter.
7827 *
7828 * Return value:
7829 * IPR_RC_JOB_RETURN
7830 **/
7831 static int ipr_reset_enable_ioa(struct ipr_cmnd *ipr_cmd)
7832 {
7833 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7834 volatile u32 int_reg;
7835 volatile u64 maskval;
7836 int i;
7837
7838 ENTER;
7839 ipr_cmd->job_step = ipr_ioafp_identify_hrrq;
7840 ipr_init_ioa_mem(ioa_cfg);
7841
7842 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
7843 spin_lock(&ioa_cfg->hrrq[i]._lock);
7844 ioa_cfg->hrrq[i].allow_interrupts = 1;
7845 spin_unlock(&ioa_cfg->hrrq[i]._lock);
7846 }
7847 wmb();
7848 if (ioa_cfg->sis64) {
7849 /* Set the adapter to the correct endian mode. */
7850 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
7851 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
7852 }
7853
7854 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg32);
7855
7856 if (int_reg & IPR_PCII_IOA_TRANS_TO_OPER) {
7857 writel((IPR_PCII_ERROR_INTERRUPTS | IPR_PCII_HRRQ_UPDATED),
7858 ioa_cfg->regs.clr_interrupt_mask_reg32);
7859 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7860 return IPR_RC_JOB_CONTINUE;
7861 }
7862
7863 /* Enable destructive diagnostics on IOA */
7864 writel(ioa_cfg->doorbell, ioa_cfg->regs.set_uproc_interrupt_reg32);
7865
7866 if (ioa_cfg->sis64) {
7867 maskval = IPR_PCII_IPL_STAGE_CHANGE;
7868 maskval = (maskval << 32) | IPR_PCII_OPER_INTERRUPTS;
7869 writeq(maskval, ioa_cfg->regs.clr_interrupt_mask_reg);
7870 } else
7871 writel(IPR_PCII_OPER_INTERRUPTS, ioa_cfg->regs.clr_interrupt_mask_reg32);
7872
7873 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
7874
7875 dev_info(&ioa_cfg->pdev->dev, "Initializing IOA.\n");
7876
7877 if (ioa_cfg->sis64) {
7878 ipr_cmd->job_step = ipr_reset_next_stage;
7879 return IPR_RC_JOB_CONTINUE;
7880 }
7881
7882 ipr_cmd->timer.data = (unsigned long) ipr_cmd;
7883 ipr_cmd->timer.expires = jiffies + (ioa_cfg->transop_timeout * HZ);
7884 ipr_cmd->timer.function = (void (*)(unsigned long))ipr_oper_timeout;
7885 ipr_cmd->done = ipr_reset_ioa_job;
7886 add_timer(&ipr_cmd->timer);
7887 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
7888
7889 LEAVE;
7890 return IPR_RC_JOB_RETURN;
7891 }
7892
7893 /**
7894 * ipr_reset_wait_for_dump - Wait for a dump to timeout.
7895 * @ipr_cmd: ipr command struct
7896 *
7897 * This function is invoked when an adapter dump has run out
7898 * of processing time.
7899 *
7900 * Return value:
7901 * IPR_RC_JOB_CONTINUE
7902 **/
7903 static int ipr_reset_wait_for_dump(struct ipr_cmnd *ipr_cmd)
7904 {
7905 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
7906
7907 if (ioa_cfg->sdt_state == GET_DUMP)
7908 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7909 else if (ioa_cfg->sdt_state == READ_DUMP)
7910 ioa_cfg->sdt_state = ABORT_DUMP;
7911
7912 ioa_cfg->dump_timeout = 1;
7913 ipr_cmd->job_step = ipr_reset_alert;
7914
7915 return IPR_RC_JOB_CONTINUE;
7916 }
7917
7918 /**
7919 * ipr_unit_check_no_data - Log a unit check/no data error log
7920 * @ioa_cfg: ioa config struct
7921 *
7922 * Logs an error indicating the adapter unit checked, but for some
7923 * reason, we were unable to fetch the unit check buffer.
7924 *
7925 * Return value:
7926 * nothing
7927 **/
7928 static void ipr_unit_check_no_data(struct ipr_ioa_cfg *ioa_cfg)
7929 {
7930 ioa_cfg->errors_logged++;
7931 dev_err(&ioa_cfg->pdev->dev, "IOA unit check with no data\n");
7932 }
7933
7934 /**
7935 * ipr_get_unit_check_buffer - Get the unit check buffer from the IOA
7936 * @ioa_cfg: ioa config struct
7937 *
7938 * Fetches the unit check buffer from the adapter by clocking the data
7939 * through the mailbox register.
7940 *
7941 * Return value:
7942 * nothing
7943 **/
7944 static void ipr_get_unit_check_buffer(struct ipr_ioa_cfg *ioa_cfg)
7945 {
7946 unsigned long mailbox;
7947 struct ipr_hostrcb *hostrcb;
7948 struct ipr_uc_sdt sdt;
7949 int rc, length;
7950 u32 ioasc;
7951
7952 mailbox = readl(ioa_cfg->ioa_mailbox);
7953
7954 if (!ioa_cfg->sis64 && !ipr_sdt_is_fmt2(mailbox)) {
7955 ipr_unit_check_no_data(ioa_cfg);
7956 return;
7957 }
7958
7959 memset(&sdt, 0, sizeof(struct ipr_uc_sdt));
7960 rc = ipr_get_ldump_data_section(ioa_cfg, mailbox, (__be32 *) &sdt,
7961 (sizeof(struct ipr_uc_sdt)) / sizeof(__be32));
7962
7963 if (rc || !(sdt.entry[0].flags & IPR_SDT_VALID_ENTRY) ||
7964 ((be32_to_cpu(sdt.hdr.state) != IPR_FMT3_SDT_READY_TO_USE) &&
7965 (be32_to_cpu(sdt.hdr.state) != IPR_FMT2_SDT_READY_TO_USE))) {
7966 ipr_unit_check_no_data(ioa_cfg);
7967 return;
7968 }
7969
7970 /* Find length of the first sdt entry (UC buffer) */
7971 if (be32_to_cpu(sdt.hdr.state) == IPR_FMT3_SDT_READY_TO_USE)
7972 length = be32_to_cpu(sdt.entry[0].end_token);
7973 else
7974 length = (be32_to_cpu(sdt.entry[0].end_token) -
7975 be32_to_cpu(sdt.entry[0].start_token)) &
7976 IPR_FMT2_MBX_ADDR_MASK;
7977
7978 hostrcb = list_entry(ioa_cfg->hostrcb_free_q.next,
7979 struct ipr_hostrcb, queue);
7980 list_del(&hostrcb->queue);
7981 memset(&hostrcb->hcam, 0, sizeof(hostrcb->hcam));
7982
7983 rc = ipr_get_ldump_data_section(ioa_cfg,
7984 be32_to_cpu(sdt.entry[0].start_token),
7985 (__be32 *)&hostrcb->hcam,
7986 min(length, (int)sizeof(hostrcb->hcam)) / sizeof(__be32));
7987
7988 if (!rc) {
7989 ipr_handle_log_data(ioa_cfg, hostrcb);
7990 ioasc = be32_to_cpu(hostrcb->hcam.u.error.fd_ioasc);
7991 if (ioasc == IPR_IOASC_NR_IOA_RESET_REQUIRED &&
7992 ioa_cfg->sdt_state == GET_DUMP)
7993 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
7994 } else
7995 ipr_unit_check_no_data(ioa_cfg);
7996
7997 list_add_tail(&hostrcb->queue, &ioa_cfg->hostrcb_free_q);
7998 }
7999
8000 /**
8001 * ipr_reset_get_unit_check_job - Call to get the unit check buffer.
8002 * @ipr_cmd: ipr command struct
8003 *
8004 * Description: This function will call to get the unit check buffer.
8005 *
8006 * Return value:
8007 * IPR_RC_JOB_RETURN
8008 **/
8009 static int ipr_reset_get_unit_check_job(struct ipr_cmnd *ipr_cmd)
8010 {
8011 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8012
8013 ENTER;
8014 ioa_cfg->ioa_unit_checked = 0;
8015 ipr_get_unit_check_buffer(ioa_cfg);
8016 ipr_cmd->job_step = ipr_reset_alert;
8017 ipr_reset_start_timer(ipr_cmd, 0);
8018
8019 LEAVE;
8020 return IPR_RC_JOB_RETURN;
8021 }
8022
8023 /**
8024 * ipr_reset_restore_cfg_space - Restore PCI config space.
8025 * @ipr_cmd: ipr command struct
8026 *
8027 * Description: This function restores the saved PCI config space of
8028 * the adapter, fails all outstanding ops back to the callers, and
8029 * fetches the dump/unit check if applicable to this reset.
8030 *
8031 * Return value:
8032 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8033 **/
8034 static int ipr_reset_restore_cfg_space(struct ipr_cmnd *ipr_cmd)
8035 {
8036 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8037 u32 int_reg;
8038
8039 ENTER;
8040 ioa_cfg->pdev->state_saved = true;
8041 pci_restore_state(ioa_cfg->pdev);
8042
8043 if (ipr_set_pcix_cmd_reg(ioa_cfg)) {
8044 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8045 return IPR_RC_JOB_CONTINUE;
8046 }
8047
8048 ipr_fail_all_ops(ioa_cfg);
8049
8050 if (ioa_cfg->sis64) {
8051 /* Set the adapter to the correct endian mode. */
8052 writel(IPR_ENDIAN_SWAP_KEY, ioa_cfg->regs.endian_swap_reg);
8053 int_reg = readl(ioa_cfg->regs.endian_swap_reg);
8054 }
8055
8056 if (ioa_cfg->ioa_unit_checked) {
8057 if (ioa_cfg->sis64) {
8058 ipr_cmd->job_step = ipr_reset_get_unit_check_job;
8059 ipr_reset_start_timer(ipr_cmd, IPR_DUMP_DELAY_TIMEOUT);
8060 return IPR_RC_JOB_RETURN;
8061 } else {
8062 ioa_cfg->ioa_unit_checked = 0;
8063 ipr_get_unit_check_buffer(ioa_cfg);
8064 ipr_cmd->job_step = ipr_reset_alert;
8065 ipr_reset_start_timer(ipr_cmd, 0);
8066 return IPR_RC_JOB_RETURN;
8067 }
8068 }
8069
8070 if (ioa_cfg->in_ioa_bringdown) {
8071 ipr_cmd->job_step = ipr_ioa_bringdown_done;
8072 } else {
8073 ipr_cmd->job_step = ipr_reset_enable_ioa;
8074
8075 if (GET_DUMP == ioa_cfg->sdt_state) {
8076 ioa_cfg->sdt_state = READ_DUMP;
8077 ioa_cfg->dump_timeout = 0;
8078 if (ioa_cfg->sis64)
8079 ipr_reset_start_timer(ipr_cmd, IPR_SIS64_DUMP_TIMEOUT);
8080 else
8081 ipr_reset_start_timer(ipr_cmd, IPR_SIS32_DUMP_TIMEOUT);
8082 ipr_cmd->job_step = ipr_reset_wait_for_dump;
8083 schedule_work(&ioa_cfg->work_q);
8084 return IPR_RC_JOB_RETURN;
8085 }
8086 }
8087
8088 LEAVE;
8089 return IPR_RC_JOB_CONTINUE;
8090 }
8091
8092 /**
8093 * ipr_reset_bist_done - BIST has completed on the adapter.
8094 * @ipr_cmd: ipr command struct
8095 *
8096 * Description: Unblock config space and resume the reset process.
8097 *
8098 * Return value:
8099 * IPR_RC_JOB_CONTINUE
8100 **/
8101 static int ipr_reset_bist_done(struct ipr_cmnd *ipr_cmd)
8102 {
8103 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8104
8105 ENTER;
8106 if (ioa_cfg->cfg_locked)
8107 pci_cfg_access_unlock(ioa_cfg->pdev);
8108 ioa_cfg->cfg_locked = 0;
8109 ipr_cmd->job_step = ipr_reset_restore_cfg_space;
8110 LEAVE;
8111 return IPR_RC_JOB_CONTINUE;
8112 }
8113
8114 /**
8115 * ipr_reset_start_bist - Run BIST on the adapter.
8116 * @ipr_cmd: ipr command struct
8117 *
8118 * Description: This function runs BIST on the adapter, then delays 2 seconds.
8119 *
8120 * Return value:
8121 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8122 **/
8123 static int ipr_reset_start_bist(struct ipr_cmnd *ipr_cmd)
8124 {
8125 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8126 int rc = PCIBIOS_SUCCESSFUL;
8127
8128 ENTER;
8129 if (ioa_cfg->ipr_chip->bist_method == IPR_MMIO)
8130 writel(IPR_UPROCI_SIS64_START_BIST,
8131 ioa_cfg->regs.set_uproc_interrupt_reg32);
8132 else
8133 rc = pci_write_config_byte(ioa_cfg->pdev, PCI_BIST, PCI_BIST_START);
8134
8135 if (rc == PCIBIOS_SUCCESSFUL) {
8136 ipr_cmd->job_step = ipr_reset_bist_done;
8137 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8138 rc = IPR_RC_JOB_RETURN;
8139 } else {
8140 if (ioa_cfg->cfg_locked)
8141 pci_cfg_access_unlock(ipr_cmd->ioa_cfg->pdev);
8142 ioa_cfg->cfg_locked = 0;
8143 ipr_cmd->s.ioasa.hdr.ioasc = cpu_to_be32(IPR_IOASC_PCI_ACCESS_ERROR);
8144 rc = IPR_RC_JOB_CONTINUE;
8145 }
8146
8147 LEAVE;
8148 return rc;
8149 }
8150
8151 /**
8152 * ipr_reset_slot_reset_done - Clear PCI reset to the adapter
8153 * @ipr_cmd: ipr command struct
8154 *
8155 * Description: This clears PCI reset to the adapter and delays two seconds.
8156 *
8157 * Return value:
8158 * IPR_RC_JOB_RETURN
8159 **/
8160 static int ipr_reset_slot_reset_done(struct ipr_cmnd *ipr_cmd)
8161 {
8162 ENTER;
8163 pci_set_pcie_reset_state(ipr_cmd->ioa_cfg->pdev, pcie_deassert_reset);
8164 ipr_cmd->job_step = ipr_reset_bist_done;
8165 ipr_reset_start_timer(ipr_cmd, IPR_WAIT_FOR_BIST_TIMEOUT);
8166 LEAVE;
8167 return IPR_RC_JOB_RETURN;
8168 }
8169
8170 /**
8171 * ipr_reset_slot_reset - Reset the PCI slot of the adapter.
8172 * @ipr_cmd: ipr command struct
8173 *
8174 * Description: This asserts PCI reset to the adapter.
8175 *
8176 * Return value:
8177 * IPR_RC_JOB_RETURN
8178 **/
8179 static int ipr_reset_slot_reset(struct ipr_cmnd *ipr_cmd)
8180 {
8181 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8182 struct pci_dev *pdev = ioa_cfg->pdev;
8183
8184 ENTER;
8185 pci_set_pcie_reset_state(pdev, pcie_warm_reset);
8186 ipr_cmd->job_step = ipr_reset_slot_reset_done;
8187 ipr_reset_start_timer(ipr_cmd, IPR_PCI_RESET_TIMEOUT);
8188 LEAVE;
8189 return IPR_RC_JOB_RETURN;
8190 }
8191
8192 /**
8193 * ipr_reset_block_config_access_wait - Wait for permission to block config access
8194 * @ipr_cmd: ipr command struct
8195 *
8196 * Description: This attempts to block config access to the IOA.
8197 *
8198 * Return value:
8199 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8200 **/
8201 static int ipr_reset_block_config_access_wait(struct ipr_cmnd *ipr_cmd)
8202 {
8203 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8204 int rc = IPR_RC_JOB_CONTINUE;
8205
8206 if (pci_cfg_access_trylock(ioa_cfg->pdev)) {
8207 ioa_cfg->cfg_locked = 1;
8208 ipr_cmd->job_step = ioa_cfg->reset;
8209 } else {
8210 if (ipr_cmd->u.time_left) {
8211 rc = IPR_RC_JOB_RETURN;
8212 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8213 ipr_reset_start_timer(ipr_cmd,
8214 IPR_CHECK_FOR_RESET_TIMEOUT);
8215 } else {
8216 ipr_cmd->job_step = ioa_cfg->reset;
8217 dev_err(&ioa_cfg->pdev->dev,
8218 "Timed out waiting to lock config access. Resetting anyway.\n");
8219 }
8220 }
8221
8222 return rc;
8223 }
8224
8225 /**
8226 * ipr_reset_block_config_access - Block config access to the IOA
8227 * @ipr_cmd: ipr command struct
8228 *
8229 * Description: This attempts to block config access to the IOA
8230 *
8231 * Return value:
8232 * IPR_RC_JOB_CONTINUE
8233 **/
8234 static int ipr_reset_block_config_access(struct ipr_cmnd *ipr_cmd)
8235 {
8236 ipr_cmd->ioa_cfg->cfg_locked = 0;
8237 ipr_cmd->job_step = ipr_reset_block_config_access_wait;
8238 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8239 return IPR_RC_JOB_CONTINUE;
8240 }
8241
8242 /**
8243 * ipr_reset_allowed - Query whether or not IOA can be reset
8244 * @ioa_cfg: ioa config struct
8245 *
8246 * Return value:
8247 * 0 if reset not allowed / non-zero if reset is allowed
8248 **/
8249 static int ipr_reset_allowed(struct ipr_ioa_cfg *ioa_cfg)
8250 {
8251 volatile u32 temp_reg;
8252
8253 temp_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
8254 return ((temp_reg & IPR_PCII_CRITICAL_OPERATION) == 0);
8255 }
8256
8257 /**
8258 * ipr_reset_wait_to_start_bist - Wait for permission to reset IOA.
8259 * @ipr_cmd: ipr command struct
8260 *
8261 * Description: This function waits for adapter permission to run BIST,
8262 * then runs BIST. If the adapter does not give permission after a
8263 * reasonable time, we will reset the adapter anyway. The impact of
8264 * resetting the adapter without warning the adapter is the risk of
8265 * losing the persistent error log on the adapter. If the adapter is
8266 * reset while it is writing to the flash on the adapter, the flash
8267 * segment will have bad ECC and be zeroed.
8268 *
8269 * Return value:
8270 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8271 **/
8272 static int ipr_reset_wait_to_start_bist(struct ipr_cmnd *ipr_cmd)
8273 {
8274 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8275 int rc = IPR_RC_JOB_RETURN;
8276
8277 if (!ipr_reset_allowed(ioa_cfg) && ipr_cmd->u.time_left) {
8278 ipr_cmd->u.time_left -= IPR_CHECK_FOR_RESET_TIMEOUT;
8279 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8280 } else {
8281 ipr_cmd->job_step = ipr_reset_block_config_access;
8282 rc = IPR_RC_JOB_CONTINUE;
8283 }
8284
8285 return rc;
8286 }
8287
8288 /**
8289 * ipr_reset_alert - Alert the adapter of a pending reset
8290 * @ipr_cmd: ipr command struct
8291 *
8292 * Description: This function alerts the adapter that it will be reset.
8293 * If memory space is not currently enabled, proceed directly
8294 * to running BIST on the adapter. The timer must always be started
8295 * so we guarantee we do not run BIST from ipr_isr.
8296 *
8297 * Return value:
8298 * IPR_RC_JOB_RETURN
8299 **/
8300 static int ipr_reset_alert(struct ipr_cmnd *ipr_cmd)
8301 {
8302 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8303 u16 cmd_reg;
8304 int rc;
8305
8306 ENTER;
8307 rc = pci_read_config_word(ioa_cfg->pdev, PCI_COMMAND, &cmd_reg);
8308
8309 if ((rc == PCIBIOS_SUCCESSFUL) && (cmd_reg & PCI_COMMAND_MEMORY)) {
8310 ipr_mask_and_clear_interrupts(ioa_cfg, ~0);
8311 writel(IPR_UPROCI_RESET_ALERT, ioa_cfg->regs.set_uproc_interrupt_reg32);
8312 ipr_cmd->job_step = ipr_reset_wait_to_start_bist;
8313 } else {
8314 ipr_cmd->job_step = ipr_reset_block_config_access;
8315 }
8316
8317 ipr_cmd->u.time_left = IPR_WAIT_FOR_RESET_TIMEOUT;
8318 ipr_reset_start_timer(ipr_cmd, IPR_CHECK_FOR_RESET_TIMEOUT);
8319
8320 LEAVE;
8321 return IPR_RC_JOB_RETURN;
8322 }
8323
8324 /**
8325 * ipr_reset_ucode_download_done - Microcode download completion
8326 * @ipr_cmd: ipr command struct
8327 *
8328 * Description: This function unmaps the microcode download buffer.
8329 *
8330 * Return value:
8331 * IPR_RC_JOB_CONTINUE
8332 **/
8333 static int ipr_reset_ucode_download_done(struct ipr_cmnd *ipr_cmd)
8334 {
8335 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8336 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8337
8338 pci_unmap_sg(ioa_cfg->pdev, sglist->scatterlist,
8339 sglist->num_sg, DMA_TO_DEVICE);
8340
8341 ipr_cmd->job_step = ipr_reset_alert;
8342 return IPR_RC_JOB_CONTINUE;
8343 }
8344
8345 /**
8346 * ipr_reset_ucode_download - Download microcode to the adapter
8347 * @ipr_cmd: ipr command struct
8348 *
8349 * Description: This function checks to see if it there is microcode
8350 * to download to the adapter. If there is, a download is performed.
8351 *
8352 * Return value:
8353 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8354 **/
8355 static int ipr_reset_ucode_download(struct ipr_cmnd *ipr_cmd)
8356 {
8357 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8358 struct ipr_sglist *sglist = ioa_cfg->ucode_sglist;
8359
8360 ENTER;
8361 ipr_cmd->job_step = ipr_reset_alert;
8362
8363 if (!sglist)
8364 return IPR_RC_JOB_CONTINUE;
8365
8366 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8367 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_SCSICDB;
8368 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = WRITE_BUFFER;
8369 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_WR_BUF_DOWNLOAD_AND_SAVE;
8370 ipr_cmd->ioarcb.cmd_pkt.cdb[6] = (sglist->buffer_len & 0xff0000) >> 16;
8371 ipr_cmd->ioarcb.cmd_pkt.cdb[7] = (sglist->buffer_len & 0x00ff00) >> 8;
8372 ipr_cmd->ioarcb.cmd_pkt.cdb[8] = sglist->buffer_len & 0x0000ff;
8373
8374 if (ioa_cfg->sis64)
8375 ipr_build_ucode_ioadl64(ipr_cmd, sglist);
8376 else
8377 ipr_build_ucode_ioadl(ipr_cmd, sglist);
8378 ipr_cmd->job_step = ipr_reset_ucode_download_done;
8379
8380 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout,
8381 IPR_WRITE_BUFFER_TIMEOUT);
8382
8383 LEAVE;
8384 return IPR_RC_JOB_RETURN;
8385 }
8386
8387 /**
8388 * ipr_reset_shutdown_ioa - Shutdown the adapter
8389 * @ipr_cmd: ipr command struct
8390 *
8391 * Description: This function issues an adapter shutdown of the
8392 * specified type to the specified adapter as part of the
8393 * adapter reset job.
8394 *
8395 * Return value:
8396 * IPR_RC_JOB_CONTINUE / IPR_RC_JOB_RETURN
8397 **/
8398 static int ipr_reset_shutdown_ioa(struct ipr_cmnd *ipr_cmd)
8399 {
8400 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8401 enum ipr_shutdown_type shutdown_type = ipr_cmd->u.shutdown_type;
8402 unsigned long timeout;
8403 int rc = IPR_RC_JOB_CONTINUE;
8404
8405 ENTER;
8406 if (shutdown_type != IPR_SHUTDOWN_NONE &&
8407 !ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8408 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
8409 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
8410 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
8411 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = shutdown_type;
8412
8413 if (shutdown_type == IPR_SHUTDOWN_NORMAL)
8414 timeout = IPR_SHUTDOWN_TIMEOUT;
8415 else if (shutdown_type == IPR_SHUTDOWN_PREPARE_FOR_NORMAL)
8416 timeout = IPR_INTERNAL_TIMEOUT;
8417 else if (ioa_cfg->dual_raid && ipr_dual_ioa_raid)
8418 timeout = IPR_DUAL_IOA_ABBR_SHUTDOWN_TO;
8419 else
8420 timeout = IPR_ABBREV_SHUTDOWN_TIMEOUT;
8421
8422 ipr_do_req(ipr_cmd, ipr_reset_ioa_job, ipr_timeout, timeout);
8423
8424 rc = IPR_RC_JOB_RETURN;
8425 ipr_cmd->job_step = ipr_reset_ucode_download;
8426 } else
8427 ipr_cmd->job_step = ipr_reset_alert;
8428
8429 LEAVE;
8430 return rc;
8431 }
8432
8433 /**
8434 * ipr_reset_ioa_job - Adapter reset job
8435 * @ipr_cmd: ipr command struct
8436 *
8437 * Description: This function is the job router for the adapter reset job.
8438 *
8439 * Return value:
8440 * none
8441 **/
8442 static void ipr_reset_ioa_job(struct ipr_cmnd *ipr_cmd)
8443 {
8444 u32 rc, ioasc;
8445 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8446
8447 do {
8448 ioasc = be32_to_cpu(ipr_cmd->s.ioasa.hdr.ioasc);
8449
8450 if (ioa_cfg->reset_cmd != ipr_cmd) {
8451 /*
8452 * We are doing nested adapter resets and this is
8453 * not the current reset job.
8454 */
8455 list_add_tail(&ipr_cmd->queue,
8456 &ipr_cmd->hrrq->hrrq_free_q);
8457 return;
8458 }
8459
8460 if (IPR_IOASC_SENSE_KEY(ioasc)) {
8461 rc = ipr_cmd->job_step_failed(ipr_cmd);
8462 if (rc == IPR_RC_JOB_RETURN)
8463 return;
8464 }
8465
8466 ipr_reinit_ipr_cmnd(ipr_cmd);
8467 ipr_cmd->job_step_failed = ipr_reset_cmd_failed;
8468 rc = ipr_cmd->job_step(ipr_cmd);
8469 } while (rc == IPR_RC_JOB_CONTINUE);
8470 }
8471
8472 /**
8473 * _ipr_initiate_ioa_reset - Initiate an adapter reset
8474 * @ioa_cfg: ioa config struct
8475 * @job_step: first job step of reset job
8476 * @shutdown_type: shutdown type
8477 *
8478 * Description: This function will initiate the reset of the given adapter
8479 * starting at the selected job step.
8480 * If the caller needs to wait on the completion of the reset,
8481 * the caller must sleep on the reset_wait_q.
8482 *
8483 * Return value:
8484 * none
8485 **/
8486 static void _ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8487 int (*job_step) (struct ipr_cmnd *),
8488 enum ipr_shutdown_type shutdown_type)
8489 {
8490 struct ipr_cmnd *ipr_cmd;
8491 int i;
8492
8493 ioa_cfg->in_reset_reload = 1;
8494 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8495 spin_lock(&ioa_cfg->hrrq[i]._lock);
8496 ioa_cfg->hrrq[i].allow_cmds = 0;
8497 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8498 }
8499 wmb();
8500 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa)
8501 scsi_block_requests(ioa_cfg->host);
8502
8503 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
8504 ioa_cfg->reset_cmd = ipr_cmd;
8505 ipr_cmd->job_step = job_step;
8506 ipr_cmd->u.shutdown_type = shutdown_type;
8507
8508 ipr_reset_ioa_job(ipr_cmd);
8509 }
8510
8511 /**
8512 * ipr_initiate_ioa_reset - Initiate an adapter reset
8513 * @ioa_cfg: ioa config struct
8514 * @shutdown_type: shutdown type
8515 *
8516 * Description: This function will initiate the reset of the given adapter.
8517 * If the caller needs to wait on the completion of the reset,
8518 * the caller must sleep on the reset_wait_q.
8519 *
8520 * Return value:
8521 * none
8522 **/
8523 static void ipr_initiate_ioa_reset(struct ipr_ioa_cfg *ioa_cfg,
8524 enum ipr_shutdown_type shutdown_type)
8525 {
8526 int i;
8527
8528 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead)
8529 return;
8530
8531 if (ioa_cfg->in_reset_reload) {
8532 if (ioa_cfg->sdt_state == GET_DUMP)
8533 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
8534 else if (ioa_cfg->sdt_state == READ_DUMP)
8535 ioa_cfg->sdt_state = ABORT_DUMP;
8536 }
8537
8538 if (ioa_cfg->reset_retries++ >= IPR_NUM_RESET_RELOAD_RETRIES) {
8539 dev_err(&ioa_cfg->pdev->dev,
8540 "IOA taken offline - error recovery failed\n");
8541
8542 ioa_cfg->reset_retries = 0;
8543 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8544 spin_lock(&ioa_cfg->hrrq[i]._lock);
8545 ioa_cfg->hrrq[i].ioa_is_dead = 1;
8546 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8547 }
8548 wmb();
8549
8550 if (ioa_cfg->in_ioa_bringdown) {
8551 ioa_cfg->reset_cmd = NULL;
8552 ioa_cfg->in_reset_reload = 0;
8553 ipr_fail_all_ops(ioa_cfg);
8554 wake_up_all(&ioa_cfg->reset_wait_q);
8555
8556 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].removing_ioa) {
8557 spin_unlock_irq(ioa_cfg->host->host_lock);
8558 scsi_unblock_requests(ioa_cfg->host);
8559 spin_lock_irq(ioa_cfg->host->host_lock);
8560 }
8561 return;
8562 } else {
8563 ioa_cfg->in_ioa_bringdown = 1;
8564 shutdown_type = IPR_SHUTDOWN_NONE;
8565 }
8566 }
8567
8568 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_shutdown_ioa,
8569 shutdown_type);
8570 }
8571
8572 /**
8573 * ipr_reset_freeze - Hold off all I/O activity
8574 * @ipr_cmd: ipr command struct
8575 *
8576 * Description: If the PCI slot is frozen, hold off all I/O
8577 * activity; then, as soon as the slot is available again,
8578 * initiate an adapter reset.
8579 */
8580 static int ipr_reset_freeze(struct ipr_cmnd *ipr_cmd)
8581 {
8582 struct ipr_ioa_cfg *ioa_cfg = ipr_cmd->ioa_cfg;
8583 int i;
8584
8585 /* Disallow new interrupts, avoid loop */
8586 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8587 spin_lock(&ioa_cfg->hrrq[i]._lock);
8588 ioa_cfg->hrrq[i].allow_interrupts = 0;
8589 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8590 }
8591 wmb();
8592 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_pending_q);
8593 ipr_cmd->done = ipr_reset_ioa_job;
8594 return IPR_RC_JOB_RETURN;
8595 }
8596
8597 /**
8598 * ipr_pci_frozen - Called when slot has experienced a PCI bus error.
8599 * @pdev: PCI device struct
8600 *
8601 * Description: This routine is called to tell us that the PCI bus
8602 * is down. Can't do anything here, except put the device driver
8603 * into a holding pattern, waiting for the PCI bus to come back.
8604 */
8605 static void ipr_pci_frozen(struct pci_dev *pdev)
8606 {
8607 unsigned long flags = 0;
8608 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8609
8610 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8611 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_freeze, IPR_SHUTDOWN_NONE);
8612 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8613 }
8614
8615 /**
8616 * ipr_pci_slot_reset - Called when PCI slot has been reset.
8617 * @pdev: PCI device struct
8618 *
8619 * Description: This routine is called by the pci error recovery
8620 * code after the PCI slot has been reset, just before we
8621 * should resume normal operations.
8622 */
8623 static pci_ers_result_t ipr_pci_slot_reset(struct pci_dev *pdev)
8624 {
8625 unsigned long flags = 0;
8626 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8627
8628 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8629 if (ioa_cfg->needs_warm_reset)
8630 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8631 else
8632 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_restore_cfg_space,
8633 IPR_SHUTDOWN_NONE);
8634 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8635 return PCI_ERS_RESULT_RECOVERED;
8636 }
8637
8638 /**
8639 * ipr_pci_perm_failure - Called when PCI slot is dead for good.
8640 * @pdev: PCI device struct
8641 *
8642 * Description: This routine is called when the PCI bus has
8643 * permanently failed.
8644 */
8645 static void ipr_pci_perm_failure(struct pci_dev *pdev)
8646 {
8647 unsigned long flags = 0;
8648 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
8649 int i;
8650
8651 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
8652 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
8653 ioa_cfg->sdt_state = ABORT_DUMP;
8654 ioa_cfg->reset_retries = IPR_NUM_RESET_RELOAD_RETRIES;
8655 ioa_cfg->in_ioa_bringdown = 1;
8656 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8657 spin_lock(&ioa_cfg->hrrq[i]._lock);
8658 ioa_cfg->hrrq[i].allow_cmds = 0;
8659 spin_unlock(&ioa_cfg->hrrq[i]._lock);
8660 }
8661 wmb();
8662 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8663 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
8664 }
8665
8666 /**
8667 * ipr_pci_error_detected - Called when a PCI error is detected.
8668 * @pdev: PCI device struct
8669 * @state: PCI channel state
8670 *
8671 * Description: Called when a PCI error is detected.
8672 *
8673 * Return value:
8674 * PCI_ERS_RESULT_NEED_RESET or PCI_ERS_RESULT_DISCONNECT
8675 */
8676 static pci_ers_result_t ipr_pci_error_detected(struct pci_dev *pdev,
8677 pci_channel_state_t state)
8678 {
8679 switch (state) {
8680 case pci_channel_io_frozen:
8681 ipr_pci_frozen(pdev);
8682 return PCI_ERS_RESULT_NEED_RESET;
8683 case pci_channel_io_perm_failure:
8684 ipr_pci_perm_failure(pdev);
8685 return PCI_ERS_RESULT_DISCONNECT;
8686 break;
8687 default:
8688 break;
8689 }
8690 return PCI_ERS_RESULT_NEED_RESET;
8691 }
8692
8693 /**
8694 * ipr_probe_ioa_part2 - Initializes IOAs found in ipr_probe_ioa(..)
8695 * @ioa_cfg: ioa cfg struct
8696 *
8697 * Description: This is the second phase of adapter intialization
8698 * This function takes care of initilizing the adapter to the point
8699 * where it can accept new commands.
8700
8701 * Return value:
8702 * 0 on success / -EIO on failure
8703 **/
8704 static int ipr_probe_ioa_part2(struct ipr_ioa_cfg *ioa_cfg)
8705 {
8706 int rc = 0;
8707 unsigned long host_lock_flags = 0;
8708
8709 ENTER;
8710 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8711 dev_dbg(&ioa_cfg->pdev->dev, "ioa_cfg adx: 0x%p\n", ioa_cfg);
8712 if (ioa_cfg->needs_hard_reset) {
8713 ioa_cfg->needs_hard_reset = 0;
8714 ipr_initiate_ioa_reset(ioa_cfg, IPR_SHUTDOWN_NONE);
8715 } else
8716 _ipr_initiate_ioa_reset(ioa_cfg, ipr_reset_enable_ioa,
8717 IPR_SHUTDOWN_NONE);
8718 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8719 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
8720 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
8721
8722 if (ioa_cfg->hrrq[IPR_INIT_HRRQ].ioa_is_dead) {
8723 rc = -EIO;
8724 } else if (ipr_invalid_adapter(ioa_cfg)) {
8725 if (!ipr_testmode)
8726 rc = -EIO;
8727
8728 dev_err(&ioa_cfg->pdev->dev,
8729 "Adapter not supported in this hardware configuration.\n");
8730 }
8731
8732 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
8733
8734 LEAVE;
8735 return rc;
8736 }
8737
8738 /**
8739 * ipr_free_cmd_blks - Frees command blocks allocated for an adapter
8740 * @ioa_cfg: ioa config struct
8741 *
8742 * Return value:
8743 * none
8744 **/
8745 static void ipr_free_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8746 {
8747 int i;
8748
8749 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8750 if (ioa_cfg->ipr_cmnd_list[i])
8751 pci_pool_free(ioa_cfg->ipr_cmd_pool,
8752 ioa_cfg->ipr_cmnd_list[i],
8753 ioa_cfg->ipr_cmnd_list_dma[i]);
8754
8755 ioa_cfg->ipr_cmnd_list[i] = NULL;
8756 }
8757
8758 if (ioa_cfg->ipr_cmd_pool)
8759 pci_pool_destroy(ioa_cfg->ipr_cmd_pool);
8760
8761 kfree(ioa_cfg->ipr_cmnd_list);
8762 kfree(ioa_cfg->ipr_cmnd_list_dma);
8763 ioa_cfg->ipr_cmnd_list = NULL;
8764 ioa_cfg->ipr_cmnd_list_dma = NULL;
8765 ioa_cfg->ipr_cmd_pool = NULL;
8766 }
8767
8768 /**
8769 * ipr_free_mem - Frees memory allocated for an adapter
8770 * @ioa_cfg: ioa cfg struct
8771 *
8772 * Return value:
8773 * nothing
8774 **/
8775 static void ipr_free_mem(struct ipr_ioa_cfg *ioa_cfg)
8776 {
8777 int i;
8778
8779 kfree(ioa_cfg->res_entries);
8780 pci_free_consistent(ioa_cfg->pdev, sizeof(struct ipr_misc_cbs),
8781 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
8782 ipr_free_cmd_blks(ioa_cfg);
8783
8784 for (i = 0; i < ioa_cfg->hrrq_num; i++)
8785 pci_free_consistent(ioa_cfg->pdev,
8786 sizeof(u32) * ioa_cfg->hrrq[i].size,
8787 ioa_cfg->hrrq[i].host_rrq,
8788 ioa_cfg->hrrq[i].host_rrq_dma);
8789
8790 pci_free_consistent(ioa_cfg->pdev, ioa_cfg->cfg_table_size,
8791 ioa_cfg->u.cfg_table,
8792 ioa_cfg->cfg_table_dma);
8793
8794 for (i = 0; i < IPR_NUM_HCAMS; i++) {
8795 pci_free_consistent(ioa_cfg->pdev,
8796 sizeof(struct ipr_hostrcb),
8797 ioa_cfg->hostrcb[i],
8798 ioa_cfg->hostrcb_dma[i]);
8799 }
8800
8801 ipr_free_dump(ioa_cfg);
8802 kfree(ioa_cfg->trace);
8803 }
8804
8805 /**
8806 * ipr_free_all_resources - Free all allocated resources for an adapter.
8807 * @ipr_cmd: ipr command struct
8808 *
8809 * This function frees all allocated resources for the
8810 * specified adapter.
8811 *
8812 * Return value:
8813 * none
8814 **/
8815 static void ipr_free_all_resources(struct ipr_ioa_cfg *ioa_cfg)
8816 {
8817 struct pci_dev *pdev = ioa_cfg->pdev;
8818
8819 ENTER;
8820 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
8821 ioa_cfg->intr_flag == IPR_USE_MSIX) {
8822 int i;
8823 for (i = 0; i < ioa_cfg->nvectors; i++)
8824 free_irq(ioa_cfg->vectors_info[i].vec,
8825 &ioa_cfg->hrrq[i]);
8826 } else
8827 free_irq(pdev->irq, &ioa_cfg->hrrq[0]);
8828
8829 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
8830 pci_disable_msi(pdev);
8831 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
8832 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
8833 pci_disable_msix(pdev);
8834 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
8835 }
8836
8837 iounmap(ioa_cfg->hdw_dma_regs);
8838 pci_release_regions(pdev);
8839 ipr_free_mem(ioa_cfg);
8840 scsi_host_put(ioa_cfg->host);
8841 pci_disable_device(pdev);
8842 LEAVE;
8843 }
8844
8845 /**
8846 * ipr_alloc_cmd_blks - Allocate command blocks for an adapter
8847 * @ioa_cfg: ioa config struct
8848 *
8849 * Return value:
8850 * 0 on success / -ENOMEM on allocation failure
8851 **/
8852 static int ipr_alloc_cmd_blks(struct ipr_ioa_cfg *ioa_cfg)
8853 {
8854 struct ipr_cmnd *ipr_cmd;
8855 struct ipr_ioarcb *ioarcb;
8856 dma_addr_t dma_addr;
8857 int i, entries_each_hrrq, hrrq_id = 0;
8858
8859 ioa_cfg->ipr_cmd_pool = pci_pool_create(IPR_NAME, ioa_cfg->pdev,
8860 sizeof(struct ipr_cmnd), 512, 0);
8861
8862 if (!ioa_cfg->ipr_cmd_pool)
8863 return -ENOMEM;
8864
8865 ioa_cfg->ipr_cmnd_list = kcalloc(IPR_NUM_CMD_BLKS, sizeof(struct ipr_cmnd *), GFP_KERNEL);
8866 ioa_cfg->ipr_cmnd_list_dma = kcalloc(IPR_NUM_CMD_BLKS, sizeof(dma_addr_t), GFP_KERNEL);
8867
8868 if (!ioa_cfg->ipr_cmnd_list || !ioa_cfg->ipr_cmnd_list_dma) {
8869 ipr_free_cmd_blks(ioa_cfg);
8870 return -ENOMEM;
8871 }
8872
8873 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
8874 if (ioa_cfg->hrrq_num > 1) {
8875 if (i == 0) {
8876 entries_each_hrrq = IPR_NUM_INTERNAL_CMD_BLKS;
8877 ioa_cfg->hrrq[i].min_cmd_id = 0;
8878 ioa_cfg->hrrq[i].max_cmd_id =
8879 (entries_each_hrrq - 1);
8880 } else {
8881 entries_each_hrrq =
8882 IPR_NUM_BASE_CMD_BLKS/
8883 (ioa_cfg->hrrq_num - 1);
8884 ioa_cfg->hrrq[i].min_cmd_id =
8885 IPR_NUM_INTERNAL_CMD_BLKS +
8886 (i - 1) * entries_each_hrrq;
8887 ioa_cfg->hrrq[i].max_cmd_id =
8888 (IPR_NUM_INTERNAL_CMD_BLKS +
8889 i * entries_each_hrrq - 1);
8890 }
8891 } else {
8892 entries_each_hrrq = IPR_NUM_CMD_BLKS;
8893 ioa_cfg->hrrq[i].min_cmd_id = 0;
8894 ioa_cfg->hrrq[i].max_cmd_id = (entries_each_hrrq - 1);
8895 }
8896 ioa_cfg->hrrq[i].size = entries_each_hrrq;
8897 }
8898
8899 BUG_ON(ioa_cfg->hrrq_num == 0);
8900
8901 i = IPR_NUM_CMD_BLKS -
8902 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id - 1;
8903 if (i > 0) {
8904 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].size += i;
8905 ioa_cfg->hrrq[ioa_cfg->hrrq_num - 1].max_cmd_id += i;
8906 }
8907
8908 for (i = 0; i < IPR_NUM_CMD_BLKS; i++) {
8909 ipr_cmd = pci_pool_alloc(ioa_cfg->ipr_cmd_pool, GFP_KERNEL, &dma_addr);
8910
8911 if (!ipr_cmd) {
8912 ipr_free_cmd_blks(ioa_cfg);
8913 return -ENOMEM;
8914 }
8915
8916 memset(ipr_cmd, 0, sizeof(*ipr_cmd));
8917 ioa_cfg->ipr_cmnd_list[i] = ipr_cmd;
8918 ioa_cfg->ipr_cmnd_list_dma[i] = dma_addr;
8919
8920 ioarcb = &ipr_cmd->ioarcb;
8921 ipr_cmd->dma_addr = dma_addr;
8922 if (ioa_cfg->sis64)
8923 ioarcb->a.ioarcb_host_pci_addr64 = cpu_to_be64(dma_addr);
8924 else
8925 ioarcb->a.ioarcb_host_pci_addr = cpu_to_be32(dma_addr);
8926
8927 ioarcb->host_response_handle = cpu_to_be32(i << 2);
8928 if (ioa_cfg->sis64) {
8929 ioarcb->u.sis64_addr_data.data_ioadl_addr =
8930 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, i.ioadl64));
8931 ioarcb->u.sis64_addr_data.ioasa_host_pci_addr =
8932 cpu_to_be64(dma_addr + offsetof(struct ipr_cmnd, s.ioasa64));
8933 } else {
8934 ioarcb->write_ioadl_addr =
8935 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, i.ioadl));
8936 ioarcb->read_ioadl_addr = ioarcb->write_ioadl_addr;
8937 ioarcb->ioasa_host_pci_addr =
8938 cpu_to_be32(dma_addr + offsetof(struct ipr_cmnd, s.ioasa));
8939 }
8940 ioarcb->ioasa_len = cpu_to_be16(sizeof(struct ipr_ioasa));
8941 ipr_cmd->cmd_index = i;
8942 ipr_cmd->ioa_cfg = ioa_cfg;
8943 ipr_cmd->sense_buffer_dma = dma_addr +
8944 offsetof(struct ipr_cmnd, sense_buffer);
8945
8946 ipr_cmd->ioarcb.cmd_pkt.hrrq_id = hrrq_id;
8947 ipr_cmd->hrrq = &ioa_cfg->hrrq[hrrq_id];
8948 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
8949 if (i >= ioa_cfg->hrrq[hrrq_id].max_cmd_id)
8950 hrrq_id++;
8951 }
8952
8953 return 0;
8954 }
8955
8956 /**
8957 * ipr_alloc_mem - Allocate memory for an adapter
8958 * @ioa_cfg: ioa config struct
8959 *
8960 * Return value:
8961 * 0 on success / non-zero for error
8962 **/
8963 static int ipr_alloc_mem(struct ipr_ioa_cfg *ioa_cfg)
8964 {
8965 struct pci_dev *pdev = ioa_cfg->pdev;
8966 int i, rc = -ENOMEM;
8967
8968 ENTER;
8969 ioa_cfg->res_entries = kzalloc(sizeof(struct ipr_resource_entry) *
8970 ioa_cfg->max_devs_supported, GFP_KERNEL);
8971
8972 if (!ioa_cfg->res_entries)
8973 goto out;
8974
8975 if (ioa_cfg->sis64) {
8976 ioa_cfg->target_ids = kzalloc(sizeof(unsigned long) *
8977 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8978 ioa_cfg->array_ids = kzalloc(sizeof(unsigned long) *
8979 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8980 ioa_cfg->vset_ids = kzalloc(sizeof(unsigned long) *
8981 BITS_TO_LONGS(ioa_cfg->max_devs_supported), GFP_KERNEL);
8982
8983 if (!ioa_cfg->target_ids || !ioa_cfg->array_ids
8984 || !ioa_cfg->vset_ids)
8985 goto out_free_res_entries;
8986 }
8987
8988 for (i = 0; i < ioa_cfg->max_devs_supported; i++) {
8989 list_add_tail(&ioa_cfg->res_entries[i].queue, &ioa_cfg->free_res_q);
8990 ioa_cfg->res_entries[i].ioa_cfg = ioa_cfg;
8991 }
8992
8993 ioa_cfg->vpd_cbs = pci_alloc_consistent(ioa_cfg->pdev,
8994 sizeof(struct ipr_misc_cbs),
8995 &ioa_cfg->vpd_cbs_dma);
8996
8997 if (!ioa_cfg->vpd_cbs)
8998 goto out_free_res_entries;
8999
9000 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9001 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_free_q);
9002 INIT_LIST_HEAD(&ioa_cfg->hrrq[i].hrrq_pending_q);
9003 spin_lock_init(&ioa_cfg->hrrq[i]._lock);
9004 if (i == 0)
9005 ioa_cfg->hrrq[i].lock = ioa_cfg->host->host_lock;
9006 else
9007 ioa_cfg->hrrq[i].lock = &ioa_cfg->hrrq[i]._lock;
9008 }
9009
9010 if (ipr_alloc_cmd_blks(ioa_cfg))
9011 goto out_free_vpd_cbs;
9012
9013 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9014 ioa_cfg->hrrq[i].host_rrq = pci_alloc_consistent(ioa_cfg->pdev,
9015 sizeof(u32) * ioa_cfg->hrrq[i].size,
9016 &ioa_cfg->hrrq[i].host_rrq_dma);
9017
9018 if (!ioa_cfg->hrrq[i].host_rrq) {
9019 while (--i > 0)
9020 pci_free_consistent(pdev,
9021 sizeof(u32) * ioa_cfg->hrrq[i].size,
9022 ioa_cfg->hrrq[i].host_rrq,
9023 ioa_cfg->hrrq[i].host_rrq_dma);
9024 goto out_ipr_free_cmd_blocks;
9025 }
9026 ioa_cfg->hrrq[i].ioa_cfg = ioa_cfg;
9027 }
9028
9029 ioa_cfg->u.cfg_table = pci_alloc_consistent(ioa_cfg->pdev,
9030 ioa_cfg->cfg_table_size,
9031 &ioa_cfg->cfg_table_dma);
9032
9033 if (!ioa_cfg->u.cfg_table)
9034 goto out_free_host_rrq;
9035
9036 for (i = 0; i < IPR_NUM_HCAMS; i++) {
9037 ioa_cfg->hostrcb[i] = pci_alloc_consistent(ioa_cfg->pdev,
9038 sizeof(struct ipr_hostrcb),
9039 &ioa_cfg->hostrcb_dma[i]);
9040
9041 if (!ioa_cfg->hostrcb[i])
9042 goto out_free_hostrcb_dma;
9043
9044 ioa_cfg->hostrcb[i]->hostrcb_dma =
9045 ioa_cfg->hostrcb_dma[i] + offsetof(struct ipr_hostrcb, hcam);
9046 ioa_cfg->hostrcb[i]->ioa_cfg = ioa_cfg;
9047 list_add_tail(&ioa_cfg->hostrcb[i]->queue, &ioa_cfg->hostrcb_free_q);
9048 }
9049
9050 ioa_cfg->trace = kzalloc(sizeof(struct ipr_trace_entry) *
9051 IPR_NUM_TRACE_ENTRIES, GFP_KERNEL);
9052
9053 if (!ioa_cfg->trace)
9054 goto out_free_hostrcb_dma;
9055
9056 rc = 0;
9057 out:
9058 LEAVE;
9059 return rc;
9060
9061 out_free_hostrcb_dma:
9062 while (i-- > 0) {
9063 pci_free_consistent(pdev, sizeof(struct ipr_hostrcb),
9064 ioa_cfg->hostrcb[i],
9065 ioa_cfg->hostrcb_dma[i]);
9066 }
9067 pci_free_consistent(pdev, ioa_cfg->cfg_table_size,
9068 ioa_cfg->u.cfg_table,
9069 ioa_cfg->cfg_table_dma);
9070 out_free_host_rrq:
9071 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9072 pci_free_consistent(pdev,
9073 sizeof(u32) * ioa_cfg->hrrq[i].size,
9074 ioa_cfg->hrrq[i].host_rrq,
9075 ioa_cfg->hrrq[i].host_rrq_dma);
9076 }
9077 out_ipr_free_cmd_blocks:
9078 ipr_free_cmd_blks(ioa_cfg);
9079 out_free_vpd_cbs:
9080 pci_free_consistent(pdev, sizeof(struct ipr_misc_cbs),
9081 ioa_cfg->vpd_cbs, ioa_cfg->vpd_cbs_dma);
9082 out_free_res_entries:
9083 kfree(ioa_cfg->res_entries);
9084 kfree(ioa_cfg->target_ids);
9085 kfree(ioa_cfg->array_ids);
9086 kfree(ioa_cfg->vset_ids);
9087 goto out;
9088 }
9089
9090 /**
9091 * ipr_initialize_bus_attr - Initialize SCSI bus attributes to default values
9092 * @ioa_cfg: ioa config struct
9093 *
9094 * Return value:
9095 * none
9096 **/
9097 static void ipr_initialize_bus_attr(struct ipr_ioa_cfg *ioa_cfg)
9098 {
9099 int i;
9100
9101 for (i = 0; i < IPR_MAX_NUM_BUSES; i++) {
9102 ioa_cfg->bus_attr[i].bus = i;
9103 ioa_cfg->bus_attr[i].qas_enabled = 0;
9104 ioa_cfg->bus_attr[i].bus_width = IPR_DEFAULT_BUS_WIDTH;
9105 if (ipr_max_speed < ARRAY_SIZE(ipr_max_bus_speeds))
9106 ioa_cfg->bus_attr[i].max_xfer_rate = ipr_max_bus_speeds[ipr_max_speed];
9107 else
9108 ioa_cfg->bus_attr[i].max_xfer_rate = IPR_U160_SCSI_RATE;
9109 }
9110 }
9111
9112 /**
9113 * ipr_init_ioa_cfg - Initialize IOA config struct
9114 * @ioa_cfg: ioa config struct
9115 * @host: scsi host struct
9116 * @pdev: PCI dev struct
9117 *
9118 * Return value:
9119 * none
9120 **/
9121 static void ipr_init_ioa_cfg(struct ipr_ioa_cfg *ioa_cfg,
9122 struct Scsi_Host *host, struct pci_dev *pdev)
9123 {
9124 const struct ipr_interrupt_offsets *p;
9125 struct ipr_interrupts *t;
9126 void __iomem *base;
9127
9128 ioa_cfg->host = host;
9129 ioa_cfg->pdev = pdev;
9130 ioa_cfg->log_level = ipr_log_level;
9131 ioa_cfg->doorbell = IPR_DOORBELL;
9132 sprintf(ioa_cfg->eye_catcher, IPR_EYECATCHER);
9133 sprintf(ioa_cfg->trace_start, IPR_TRACE_START_LABEL);
9134 sprintf(ioa_cfg->cfg_table_start, IPR_CFG_TBL_START);
9135 sprintf(ioa_cfg->resource_table_label, IPR_RES_TABLE_LABEL);
9136 sprintf(ioa_cfg->ipr_hcam_label, IPR_HCAM_LABEL);
9137 sprintf(ioa_cfg->ipr_cmd_label, IPR_CMD_LABEL);
9138
9139 INIT_LIST_HEAD(&ioa_cfg->hostrcb_free_q);
9140 INIT_LIST_HEAD(&ioa_cfg->hostrcb_pending_q);
9141 INIT_LIST_HEAD(&ioa_cfg->free_res_q);
9142 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9143 INIT_WORK(&ioa_cfg->work_q, ipr_worker_thread);
9144 init_waitqueue_head(&ioa_cfg->reset_wait_q);
9145 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9146 ioa_cfg->sdt_state = INACTIVE;
9147
9148 ipr_initialize_bus_attr(ioa_cfg);
9149 ioa_cfg->max_devs_supported = ipr_max_devs;
9150
9151 if (ioa_cfg->sis64) {
9152 host->max_id = IPR_MAX_SIS64_TARGETS_PER_BUS;
9153 host->max_lun = IPR_MAX_SIS64_LUNS_PER_TARGET;
9154 if (ipr_max_devs > IPR_MAX_SIS64_DEVS)
9155 ioa_cfg->max_devs_supported = IPR_MAX_SIS64_DEVS;
9156 } else {
9157 host->max_id = IPR_MAX_NUM_TARGETS_PER_BUS;
9158 host->max_lun = IPR_MAX_NUM_LUNS_PER_TARGET;
9159 if (ipr_max_devs > IPR_MAX_PHYSICAL_DEVS)
9160 ioa_cfg->max_devs_supported = IPR_MAX_PHYSICAL_DEVS;
9161 }
9162 host->max_channel = IPR_MAX_BUS_TO_SCAN;
9163 host->unique_id = host->host_no;
9164 host->max_cmd_len = IPR_MAX_CDB_LEN;
9165 host->can_queue = ioa_cfg->max_cmds;
9166 pci_set_drvdata(pdev, ioa_cfg);
9167
9168 p = &ioa_cfg->chip_cfg->regs;
9169 t = &ioa_cfg->regs;
9170 base = ioa_cfg->hdw_dma_regs;
9171
9172 t->set_interrupt_mask_reg = base + p->set_interrupt_mask_reg;
9173 t->clr_interrupt_mask_reg = base + p->clr_interrupt_mask_reg;
9174 t->clr_interrupt_mask_reg32 = base + p->clr_interrupt_mask_reg32;
9175 t->sense_interrupt_mask_reg = base + p->sense_interrupt_mask_reg;
9176 t->sense_interrupt_mask_reg32 = base + p->sense_interrupt_mask_reg32;
9177 t->clr_interrupt_reg = base + p->clr_interrupt_reg;
9178 t->clr_interrupt_reg32 = base + p->clr_interrupt_reg32;
9179 t->sense_interrupt_reg = base + p->sense_interrupt_reg;
9180 t->sense_interrupt_reg32 = base + p->sense_interrupt_reg32;
9181 t->ioarrin_reg = base + p->ioarrin_reg;
9182 t->sense_uproc_interrupt_reg = base + p->sense_uproc_interrupt_reg;
9183 t->sense_uproc_interrupt_reg32 = base + p->sense_uproc_interrupt_reg32;
9184 t->set_uproc_interrupt_reg = base + p->set_uproc_interrupt_reg;
9185 t->set_uproc_interrupt_reg32 = base + p->set_uproc_interrupt_reg32;
9186 t->clr_uproc_interrupt_reg = base + p->clr_uproc_interrupt_reg;
9187 t->clr_uproc_interrupt_reg32 = base + p->clr_uproc_interrupt_reg32;
9188
9189 if (ioa_cfg->sis64) {
9190 t->init_feedback_reg = base + p->init_feedback_reg;
9191 t->dump_addr_reg = base + p->dump_addr_reg;
9192 t->dump_data_reg = base + p->dump_data_reg;
9193 t->endian_swap_reg = base + p->endian_swap_reg;
9194 }
9195 }
9196
9197 /**
9198 * ipr_get_chip_info - Find adapter chip information
9199 * @dev_id: PCI device id struct
9200 *
9201 * Return value:
9202 * ptr to chip information on success / NULL on failure
9203 **/
9204 static const struct ipr_chip_t *
9205 ipr_get_chip_info(const struct pci_device_id *dev_id)
9206 {
9207 int i;
9208
9209 for (i = 0; i < ARRAY_SIZE(ipr_chip); i++)
9210 if (ipr_chip[i].vendor == dev_id->vendor &&
9211 ipr_chip[i].device == dev_id->device)
9212 return &ipr_chip[i];
9213 return NULL;
9214 }
9215
9216 static int ipr_enable_msix(struct ipr_ioa_cfg *ioa_cfg)
9217 {
9218 struct msix_entry entries[IPR_MAX_MSIX_VECTORS];
9219 int i, err, vectors;
9220
9221 for (i = 0; i < ARRAY_SIZE(entries); ++i)
9222 entries[i].entry = i;
9223
9224 vectors = ipr_number_of_msix;
9225
9226 while ((err = pci_enable_msix(ioa_cfg->pdev, entries, vectors)) > 0)
9227 vectors = err;
9228
9229 if (err < 0) {
9230 pci_disable_msix(ioa_cfg->pdev);
9231 return err;
9232 }
9233
9234 if (!err) {
9235 for (i = 0; i < vectors; i++)
9236 ioa_cfg->vectors_info[i].vec = entries[i].vector;
9237 ioa_cfg->nvectors = vectors;
9238 }
9239
9240 return err;
9241 }
9242
9243 static int ipr_enable_msi(struct ipr_ioa_cfg *ioa_cfg)
9244 {
9245 int i, err, vectors;
9246
9247 vectors = ipr_number_of_msix;
9248
9249 while ((err = pci_enable_msi_block(ioa_cfg->pdev, vectors)) > 0)
9250 vectors = err;
9251
9252 if (err < 0) {
9253 pci_disable_msi(ioa_cfg->pdev);
9254 return err;
9255 }
9256
9257 if (!err) {
9258 for (i = 0; i < vectors; i++)
9259 ioa_cfg->vectors_info[i].vec = ioa_cfg->pdev->irq + i;
9260 ioa_cfg->nvectors = vectors;
9261 }
9262
9263 return err;
9264 }
9265
9266 static void name_msi_vectors(struct ipr_ioa_cfg *ioa_cfg)
9267 {
9268 int vec_idx, n = sizeof(ioa_cfg->vectors_info[0].desc) - 1;
9269
9270 for (vec_idx = 0; vec_idx < ioa_cfg->nvectors; vec_idx++) {
9271 snprintf(ioa_cfg->vectors_info[vec_idx].desc, n,
9272 "host%d-%d", ioa_cfg->host->host_no, vec_idx);
9273 ioa_cfg->vectors_info[vec_idx].
9274 desc[strlen(ioa_cfg->vectors_info[vec_idx].desc)] = 0;
9275 }
9276 }
9277
9278 static int ipr_request_other_msi_irqs(struct ipr_ioa_cfg *ioa_cfg)
9279 {
9280 int i, rc;
9281
9282 for (i = 1; i < ioa_cfg->nvectors; i++) {
9283 rc = request_irq(ioa_cfg->vectors_info[i].vec,
9284 ipr_isr_mhrrq,
9285 0,
9286 ioa_cfg->vectors_info[i].desc,
9287 &ioa_cfg->hrrq[i]);
9288 if (rc) {
9289 while (--i >= 0)
9290 free_irq(ioa_cfg->vectors_info[i].vec,
9291 &ioa_cfg->hrrq[i]);
9292 return rc;
9293 }
9294 }
9295 return 0;
9296 }
9297
9298 /**
9299 * ipr_test_intr - Handle the interrupt generated in ipr_test_msi().
9300 * @pdev: PCI device struct
9301 *
9302 * Description: Simply set the msi_received flag to 1 indicating that
9303 * Message Signaled Interrupts are supported.
9304 *
9305 * Return value:
9306 * 0 on success / non-zero on failure
9307 **/
9308 static irqreturn_t ipr_test_intr(int irq, void *devp)
9309 {
9310 struct ipr_ioa_cfg *ioa_cfg = (struct ipr_ioa_cfg *)devp;
9311 unsigned long lock_flags = 0;
9312 irqreturn_t rc = IRQ_HANDLED;
9313
9314 dev_info(&ioa_cfg->pdev->dev, "Received IRQ : %d\n", irq);
9315 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9316
9317 ioa_cfg->msi_received = 1;
9318 wake_up(&ioa_cfg->msi_wait_q);
9319
9320 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9321 return rc;
9322 }
9323
9324 /**
9325 * ipr_test_msi - Test for Message Signaled Interrupt (MSI) support.
9326 * @pdev: PCI device struct
9327 *
9328 * Description: The return value from pci_enable_msi() can not always be
9329 * trusted. This routine sets up and initiates a test interrupt to determine
9330 * if the interrupt is received via the ipr_test_intr() service routine.
9331 * If the tests fails, the driver will fall back to LSI.
9332 *
9333 * Return value:
9334 * 0 on success / non-zero on failure
9335 **/
9336 static int ipr_test_msi(struct ipr_ioa_cfg *ioa_cfg, struct pci_dev *pdev)
9337 {
9338 int rc;
9339 volatile u32 int_reg;
9340 unsigned long lock_flags = 0;
9341
9342 ENTER;
9343
9344 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9345 init_waitqueue_head(&ioa_cfg->msi_wait_q);
9346 ioa_cfg->msi_received = 0;
9347 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9348 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.clr_interrupt_mask_reg32);
9349 int_reg = readl(ioa_cfg->regs.sense_interrupt_mask_reg);
9350 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9351
9352 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9353 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9354 else
9355 rc = request_irq(pdev->irq, ipr_test_intr, 0, IPR_NAME, ioa_cfg);
9356 if (rc) {
9357 dev_err(&pdev->dev, "Can not assign irq %d\n", pdev->irq);
9358 return rc;
9359 } else if (ipr_debug)
9360 dev_info(&pdev->dev, "IRQ assigned: %d\n", pdev->irq);
9361
9362 writel(IPR_PCII_IO_DEBUG_ACKNOWLEDGE, ioa_cfg->regs.sense_interrupt_reg32);
9363 int_reg = readl(ioa_cfg->regs.sense_interrupt_reg);
9364 wait_event_timeout(ioa_cfg->msi_wait_q, ioa_cfg->msi_received, HZ);
9365 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9366 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9367
9368 if (!ioa_cfg->msi_received) {
9369 /* MSI test failed */
9370 dev_info(&pdev->dev, "MSI test failed. Falling back to LSI.\n");
9371 rc = -EOPNOTSUPP;
9372 } else if (ipr_debug)
9373 dev_info(&pdev->dev, "MSI test succeeded.\n");
9374
9375 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9376
9377 if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9378 free_irq(ioa_cfg->vectors_info[0].vec, ioa_cfg);
9379 else
9380 free_irq(pdev->irq, ioa_cfg);
9381
9382 LEAVE;
9383
9384 return rc;
9385 }
9386
9387 /* ipr_probe_ioa - Allocates memory and does first stage of initialization
9388 * @pdev: PCI device struct
9389 * @dev_id: PCI device id struct
9390 *
9391 * Return value:
9392 * 0 on success / non-zero on failure
9393 **/
9394 static int ipr_probe_ioa(struct pci_dev *pdev,
9395 const struct pci_device_id *dev_id)
9396 {
9397 struct ipr_ioa_cfg *ioa_cfg;
9398 struct Scsi_Host *host;
9399 unsigned long ipr_regs_pci;
9400 void __iomem *ipr_regs;
9401 int rc = PCIBIOS_SUCCESSFUL;
9402 volatile u32 mask, uproc, interrupts;
9403 unsigned long lock_flags;
9404
9405 ENTER;
9406
9407 if ((rc = pci_enable_device(pdev))) {
9408 dev_err(&pdev->dev, "Cannot enable adapter\n");
9409 goto out;
9410 }
9411
9412 dev_info(&pdev->dev, "Found IOA with IRQ: %d\n", pdev->irq);
9413
9414 host = scsi_host_alloc(&driver_template, sizeof(*ioa_cfg));
9415
9416 if (!host) {
9417 dev_err(&pdev->dev, "call to scsi_host_alloc failed!\n");
9418 rc = -ENOMEM;
9419 goto out_disable;
9420 }
9421
9422 ioa_cfg = (struct ipr_ioa_cfg *)host->hostdata;
9423 memset(ioa_cfg, 0, sizeof(struct ipr_ioa_cfg));
9424 ata_host_init(&ioa_cfg->ata_host, &pdev->dev, &ipr_sata_ops);
9425
9426 ioa_cfg->ipr_chip = ipr_get_chip_info(dev_id);
9427
9428 if (!ioa_cfg->ipr_chip) {
9429 dev_err(&pdev->dev, "Unknown adapter chipset 0x%04X 0x%04X\n",
9430 dev_id->vendor, dev_id->device);
9431 goto out_scsi_host_put;
9432 }
9433
9434 /* set SIS 32 or SIS 64 */
9435 ioa_cfg->sis64 = ioa_cfg->ipr_chip->sis_type == IPR_SIS64 ? 1 : 0;
9436 ioa_cfg->chip_cfg = ioa_cfg->ipr_chip->cfg;
9437 ioa_cfg->clear_isr = ioa_cfg->chip_cfg->clear_isr;
9438 ioa_cfg->max_cmds = ioa_cfg->chip_cfg->max_cmds;
9439
9440 if (ipr_transop_timeout)
9441 ioa_cfg->transop_timeout = ipr_transop_timeout;
9442 else if (dev_id->driver_data & IPR_USE_LONG_TRANSOP_TIMEOUT)
9443 ioa_cfg->transop_timeout = IPR_LONG_OPERATIONAL_TIMEOUT;
9444 else
9445 ioa_cfg->transop_timeout = IPR_OPERATIONAL_TIMEOUT;
9446
9447 ioa_cfg->revid = pdev->revision;
9448
9449 ipr_regs_pci = pci_resource_start(pdev, 0);
9450
9451 rc = pci_request_regions(pdev, IPR_NAME);
9452 if (rc < 0) {
9453 dev_err(&pdev->dev,
9454 "Couldn't register memory range of registers\n");
9455 goto out_scsi_host_put;
9456 }
9457
9458 ipr_regs = pci_ioremap_bar(pdev, 0);
9459
9460 if (!ipr_regs) {
9461 dev_err(&pdev->dev,
9462 "Couldn't map memory range of registers\n");
9463 rc = -ENOMEM;
9464 goto out_release_regions;
9465 }
9466
9467 ioa_cfg->hdw_dma_regs = ipr_regs;
9468 ioa_cfg->hdw_dma_regs_pci = ipr_regs_pci;
9469 ioa_cfg->ioa_mailbox = ioa_cfg->chip_cfg->mailbox + ipr_regs;
9470
9471 ipr_init_ioa_cfg(ioa_cfg, host, pdev);
9472
9473 pci_set_master(pdev);
9474
9475 if (ioa_cfg->sis64) {
9476 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
9477 if (rc < 0) {
9478 dev_dbg(&pdev->dev, "Failed to set 64 bit PCI DMA mask\n");
9479 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9480 }
9481
9482 } else
9483 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
9484
9485 if (rc < 0) {
9486 dev_err(&pdev->dev, "Failed to set PCI DMA mask\n");
9487 goto cleanup_nomem;
9488 }
9489
9490 rc = pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
9491 ioa_cfg->chip_cfg->cache_line_size);
9492
9493 if (rc != PCIBIOS_SUCCESSFUL) {
9494 dev_err(&pdev->dev, "Write of cache line size failed\n");
9495 rc = -EIO;
9496 goto cleanup_nomem;
9497 }
9498
9499 if (ipr_number_of_msix > IPR_MAX_MSIX_VECTORS) {
9500 dev_err(&pdev->dev, "The max number of MSIX is %d\n",
9501 IPR_MAX_MSIX_VECTORS);
9502 ipr_number_of_msix = IPR_MAX_MSIX_VECTORS;
9503 }
9504
9505 if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
9506 ipr_enable_msix(ioa_cfg) == 0)
9507 ioa_cfg->intr_flag = IPR_USE_MSIX;
9508 else if (ioa_cfg->ipr_chip->intr_type == IPR_USE_MSI &&
9509 ipr_enable_msi(ioa_cfg) == 0)
9510 ioa_cfg->intr_flag = IPR_USE_MSI;
9511 else {
9512 ioa_cfg->intr_flag = IPR_USE_LSI;
9513 ioa_cfg->nvectors = 1;
9514 dev_info(&pdev->dev, "Cannot enable MSI.\n");
9515 }
9516
9517 if (ioa_cfg->intr_flag == IPR_USE_MSI ||
9518 ioa_cfg->intr_flag == IPR_USE_MSIX) {
9519 rc = ipr_test_msi(ioa_cfg, pdev);
9520 if (rc == -EOPNOTSUPP) {
9521 if (ioa_cfg->intr_flag == IPR_USE_MSI) {
9522 ioa_cfg->intr_flag &= ~IPR_USE_MSI;
9523 pci_disable_msi(pdev);
9524 } else if (ioa_cfg->intr_flag == IPR_USE_MSIX) {
9525 ioa_cfg->intr_flag &= ~IPR_USE_MSIX;
9526 pci_disable_msix(pdev);
9527 }
9528
9529 ioa_cfg->intr_flag = IPR_USE_LSI;
9530 ioa_cfg->nvectors = 1;
9531 }
9532 else if (rc)
9533 goto out_msi_disable;
9534 else {
9535 if (ioa_cfg->intr_flag == IPR_USE_MSI)
9536 dev_info(&pdev->dev,
9537 "Request for %d MSIs succeeded with starting IRQ: %d\n",
9538 ioa_cfg->nvectors, pdev->irq);
9539 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9540 dev_info(&pdev->dev,
9541 "Request for %d MSIXs succeeded.",
9542 ioa_cfg->nvectors);
9543 }
9544 }
9545
9546 ioa_cfg->hrrq_num = min3(ioa_cfg->nvectors,
9547 (unsigned int)num_online_cpus(),
9548 (unsigned int)IPR_MAX_HRRQ_NUM);
9549
9550 /* Save away PCI config space for use following IOA reset */
9551 rc = pci_save_state(pdev);
9552
9553 if (rc != PCIBIOS_SUCCESSFUL) {
9554 dev_err(&pdev->dev, "Failed to save PCI config space\n");
9555 rc = -EIO;
9556 goto out_msi_disable;
9557 }
9558
9559 if ((rc = ipr_save_pcix_cmd_reg(ioa_cfg)))
9560 goto out_msi_disable;
9561
9562 if ((rc = ipr_set_pcix_cmd_reg(ioa_cfg)))
9563 goto out_msi_disable;
9564
9565 if (ioa_cfg->sis64)
9566 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr64)
9567 + ((sizeof(struct ipr_config_table_entry64)
9568 * ioa_cfg->max_devs_supported)));
9569 else
9570 ioa_cfg->cfg_table_size = (sizeof(struct ipr_config_table_hdr)
9571 + ((sizeof(struct ipr_config_table_entry)
9572 * ioa_cfg->max_devs_supported)));
9573
9574 rc = ipr_alloc_mem(ioa_cfg);
9575 if (rc < 0) {
9576 dev_err(&pdev->dev,
9577 "Couldn't allocate enough memory for device driver!\n");
9578 goto out_msi_disable;
9579 }
9580
9581 /*
9582 * If HRRQ updated interrupt is not masked, or reset alert is set,
9583 * the card is in an unknown state and needs a hard reset
9584 */
9585 mask = readl(ioa_cfg->regs.sense_interrupt_mask_reg32);
9586 interrupts = readl(ioa_cfg->regs.sense_interrupt_reg32);
9587 uproc = readl(ioa_cfg->regs.sense_uproc_interrupt_reg32);
9588 if ((mask & IPR_PCII_HRRQ_UPDATED) == 0 || (uproc & IPR_UPROCI_RESET_ALERT))
9589 ioa_cfg->needs_hard_reset = 1;
9590 if ((interrupts & IPR_PCII_ERROR_INTERRUPTS) || reset_devices)
9591 ioa_cfg->needs_hard_reset = 1;
9592 if (interrupts & IPR_PCII_IOA_UNIT_CHECKED)
9593 ioa_cfg->ioa_unit_checked = 1;
9594
9595 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9596 ipr_mask_and_clear_interrupts(ioa_cfg, ~IPR_PCII_IOA_TRANS_TO_OPER);
9597 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9598
9599 if (ioa_cfg->intr_flag == IPR_USE_MSI
9600 || ioa_cfg->intr_flag == IPR_USE_MSIX) {
9601 name_msi_vectors(ioa_cfg);
9602 rc = request_irq(ioa_cfg->vectors_info[0].vec, ipr_isr,
9603 0,
9604 ioa_cfg->vectors_info[0].desc,
9605 &ioa_cfg->hrrq[0]);
9606 if (!rc)
9607 rc = ipr_request_other_msi_irqs(ioa_cfg);
9608 } else {
9609 rc = request_irq(pdev->irq, ipr_isr,
9610 IRQF_SHARED,
9611 IPR_NAME, &ioa_cfg->hrrq[0]);
9612 }
9613 if (rc) {
9614 dev_err(&pdev->dev, "Couldn't register IRQ %d! rc=%d\n",
9615 pdev->irq, rc);
9616 goto cleanup_nolog;
9617 }
9618
9619 if ((dev_id->driver_data & IPR_USE_PCI_WARM_RESET) ||
9620 (dev_id->device == PCI_DEVICE_ID_IBM_OBSIDIAN_E && !ioa_cfg->revid)) {
9621 ioa_cfg->needs_warm_reset = 1;
9622 ioa_cfg->reset = ipr_reset_slot_reset;
9623 } else
9624 ioa_cfg->reset = ipr_reset_start_bist;
9625
9626 spin_lock(&ipr_driver_lock);
9627 list_add_tail(&ioa_cfg->queue, &ipr_ioa_head);
9628 spin_unlock(&ipr_driver_lock);
9629
9630 LEAVE;
9631 out:
9632 return rc;
9633
9634 cleanup_nolog:
9635 ipr_free_mem(ioa_cfg);
9636 out_msi_disable:
9637 if (ioa_cfg->intr_flag == IPR_USE_MSI)
9638 pci_disable_msi(pdev);
9639 else if (ioa_cfg->intr_flag == IPR_USE_MSIX)
9640 pci_disable_msix(pdev);
9641 cleanup_nomem:
9642 iounmap(ipr_regs);
9643 out_release_regions:
9644 pci_release_regions(pdev);
9645 out_scsi_host_put:
9646 scsi_host_put(host);
9647 out_disable:
9648 pci_disable_device(pdev);
9649 goto out;
9650 }
9651
9652 /**
9653 * ipr_scan_vsets - Scans for VSET devices
9654 * @ioa_cfg: ioa config struct
9655 *
9656 * Description: Since the VSET resources do not follow SAM in that we can have
9657 * sparse LUNs with no LUN 0, we have to scan for these ourselves.
9658 *
9659 * Return value:
9660 * none
9661 **/
9662 static void ipr_scan_vsets(struct ipr_ioa_cfg *ioa_cfg)
9663 {
9664 int target, lun;
9665
9666 for (target = 0; target < IPR_MAX_NUM_TARGETS_PER_BUS; target++)
9667 for (lun = 0; lun < IPR_MAX_NUM_VSET_LUNS_PER_TARGET; lun++)
9668 scsi_add_device(ioa_cfg->host, IPR_VSET_BUS, target, lun);
9669 }
9670
9671 /**
9672 * ipr_initiate_ioa_bringdown - Bring down an adapter
9673 * @ioa_cfg: ioa config struct
9674 * @shutdown_type: shutdown type
9675 *
9676 * Description: This function will initiate bringing down the adapter.
9677 * This consists of issuing an IOA shutdown to the adapter
9678 * to flush the cache, and running BIST.
9679 * If the caller needs to wait on the completion of the reset,
9680 * the caller must sleep on the reset_wait_q.
9681 *
9682 * Return value:
9683 * none
9684 **/
9685 static void ipr_initiate_ioa_bringdown(struct ipr_ioa_cfg *ioa_cfg,
9686 enum ipr_shutdown_type shutdown_type)
9687 {
9688 ENTER;
9689 if (ioa_cfg->sdt_state == WAIT_FOR_DUMP)
9690 ioa_cfg->sdt_state = ABORT_DUMP;
9691 ioa_cfg->reset_retries = 0;
9692 ioa_cfg->in_ioa_bringdown = 1;
9693 ipr_initiate_ioa_reset(ioa_cfg, shutdown_type);
9694 LEAVE;
9695 }
9696
9697 /**
9698 * __ipr_remove - Remove a single adapter
9699 * @pdev: pci device struct
9700 *
9701 * Adapter hot plug remove entry point.
9702 *
9703 * Return value:
9704 * none
9705 **/
9706 static void __ipr_remove(struct pci_dev *pdev)
9707 {
9708 unsigned long host_lock_flags = 0;
9709 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9710 int i;
9711 ENTER;
9712
9713 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9714 while (ioa_cfg->in_reset_reload) {
9715 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9716 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9717 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9718 }
9719
9720 for (i = 0; i < ioa_cfg->hrrq_num; i++) {
9721 spin_lock(&ioa_cfg->hrrq[i]._lock);
9722 ioa_cfg->hrrq[i].removing_ioa = 1;
9723 spin_unlock(&ioa_cfg->hrrq[i]._lock);
9724 }
9725 wmb();
9726 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9727
9728 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9729 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9730 flush_work(&ioa_cfg->work_q);
9731 INIT_LIST_HEAD(&ioa_cfg->used_res_q);
9732 spin_lock_irqsave(ioa_cfg->host->host_lock, host_lock_flags);
9733
9734 spin_lock(&ipr_driver_lock);
9735 list_del(&ioa_cfg->queue);
9736 spin_unlock(&ipr_driver_lock);
9737
9738 if (ioa_cfg->sdt_state == ABORT_DUMP)
9739 ioa_cfg->sdt_state = WAIT_FOR_DUMP;
9740 spin_unlock_irqrestore(ioa_cfg->host->host_lock, host_lock_flags);
9741
9742 ipr_free_all_resources(ioa_cfg);
9743
9744 LEAVE;
9745 }
9746
9747 /**
9748 * ipr_remove - IOA hot plug remove entry point
9749 * @pdev: pci device struct
9750 *
9751 * Adapter hot plug remove entry point.
9752 *
9753 * Return value:
9754 * none
9755 **/
9756 static void ipr_remove(struct pci_dev *pdev)
9757 {
9758 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9759
9760 ENTER;
9761
9762 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9763 &ipr_trace_attr);
9764 ipr_remove_dump_file(&ioa_cfg->host->shost_dev.kobj,
9765 &ipr_dump_attr);
9766 scsi_remove_host(ioa_cfg->host);
9767
9768 __ipr_remove(pdev);
9769
9770 LEAVE;
9771 }
9772
9773 /**
9774 * ipr_probe - Adapter hot plug add entry point
9775 *
9776 * Return value:
9777 * 0 on success / non-zero on failure
9778 **/
9779 static int ipr_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
9780 {
9781 struct ipr_ioa_cfg *ioa_cfg;
9782 int rc, i;
9783
9784 rc = ipr_probe_ioa(pdev, dev_id);
9785
9786 if (rc)
9787 return rc;
9788
9789 ioa_cfg = pci_get_drvdata(pdev);
9790 rc = ipr_probe_ioa_part2(ioa_cfg);
9791
9792 if (rc) {
9793 __ipr_remove(pdev);
9794 return rc;
9795 }
9796
9797 rc = scsi_add_host(ioa_cfg->host, &pdev->dev);
9798
9799 if (rc) {
9800 __ipr_remove(pdev);
9801 return rc;
9802 }
9803
9804 rc = ipr_create_trace_file(&ioa_cfg->host->shost_dev.kobj,
9805 &ipr_trace_attr);
9806
9807 if (rc) {
9808 scsi_remove_host(ioa_cfg->host);
9809 __ipr_remove(pdev);
9810 return rc;
9811 }
9812
9813 rc = ipr_create_dump_file(&ioa_cfg->host->shost_dev.kobj,
9814 &ipr_dump_attr);
9815
9816 if (rc) {
9817 ipr_remove_trace_file(&ioa_cfg->host->shost_dev.kobj,
9818 &ipr_trace_attr);
9819 scsi_remove_host(ioa_cfg->host);
9820 __ipr_remove(pdev);
9821 return rc;
9822 }
9823
9824 scsi_scan_host(ioa_cfg->host);
9825 ipr_scan_vsets(ioa_cfg);
9826 scsi_add_device(ioa_cfg->host, IPR_IOA_BUS, IPR_IOA_TARGET, IPR_IOA_LUN);
9827 ioa_cfg->allow_ml_add_del = 1;
9828 ioa_cfg->host->max_channel = IPR_VSET_BUS;
9829 ioa_cfg->iopoll_weight = ioa_cfg->chip_cfg->iopoll_weight;
9830
9831 if (blk_iopoll_enabled && ioa_cfg->iopoll_weight &&
9832 ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
9833 for (i = 1; i < ioa_cfg->hrrq_num; i++) {
9834 blk_iopoll_init(&ioa_cfg->hrrq[i].iopoll,
9835 ioa_cfg->iopoll_weight, ipr_iopoll);
9836 blk_iopoll_enable(&ioa_cfg->hrrq[i].iopoll);
9837 }
9838 }
9839
9840 schedule_work(&ioa_cfg->work_q);
9841 return 0;
9842 }
9843
9844 /**
9845 * ipr_shutdown - Shutdown handler.
9846 * @pdev: pci device struct
9847 *
9848 * This function is invoked upon system shutdown/reboot. It will issue
9849 * an adapter shutdown to the adapter to flush the write cache.
9850 *
9851 * Return value:
9852 * none
9853 **/
9854 static void ipr_shutdown(struct pci_dev *pdev)
9855 {
9856 struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
9857 unsigned long lock_flags = 0;
9858 int i;
9859
9860 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9861 if (blk_iopoll_enabled && ioa_cfg->iopoll_weight &&
9862 ioa_cfg->sis64 && ioa_cfg->nvectors > 1) {
9863 ioa_cfg->iopoll_weight = 0;
9864 for (i = 1; i < ioa_cfg->hrrq_num; i++)
9865 blk_iopoll_disable(&ioa_cfg->hrrq[i].iopoll);
9866 }
9867
9868 while (ioa_cfg->in_reset_reload) {
9869 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9870 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9871 spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
9872 }
9873
9874 ipr_initiate_ioa_bringdown(ioa_cfg, IPR_SHUTDOWN_NORMAL);
9875 spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
9876 wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
9877 }
9878
9879 static struct pci_device_id ipr_pci_table[] = {
9880 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9881 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5702, 0, 0, 0 },
9882 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9883 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_5703, 0, 0, 0 },
9884 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9885 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573D, 0, 0, 0 },
9886 { PCI_VENDOR_ID_MYLEX, PCI_DEVICE_ID_IBM_GEMSTONE,
9887 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_573E, 0, 0, 0 },
9888 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9889 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571B, 0, 0, 0 },
9890 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9891 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572E, 0, 0, 0 },
9892 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9893 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571A, 0, 0, 0 },
9894 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE,
9895 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575B, 0, 0,
9896 IPR_USE_LONG_TRANSOP_TIMEOUT },
9897 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9898 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9899 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9900 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9901 IPR_USE_LONG_TRANSOP_TIMEOUT },
9902 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_OBSIDIAN,
9903 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9904 IPR_USE_LONG_TRANSOP_TIMEOUT },
9905 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9906 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572A, 0, 0, 0 },
9907 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9908 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572B, 0, 0,
9909 IPR_USE_LONG_TRANSOP_TIMEOUT},
9910 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
9911 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_575C, 0, 0,
9912 IPR_USE_LONG_TRANSOP_TIMEOUT },
9913 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9914 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574E, 0, 0,
9915 IPR_USE_LONG_TRANSOP_TIMEOUT },
9916 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9917 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B3, 0, 0, 0 },
9918 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9919 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CC, 0, 0, 0 },
9920 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN_E,
9921 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B7, 0, 0,
9922 IPR_USE_LONG_TRANSOP_TIMEOUT | IPR_USE_PCI_WARM_RESET },
9923 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_SNIPE,
9924 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_2780, 0, 0, 0 },
9925 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9926 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571E, 0, 0, 0 },
9927 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9928 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_571F, 0, 0,
9929 IPR_USE_LONG_TRANSOP_TIMEOUT },
9930 { PCI_VENDOR_ID_ADAPTEC2, PCI_DEVICE_ID_ADAPTEC2_SCAMP,
9931 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_572F, 0, 0,
9932 IPR_USE_LONG_TRANSOP_TIMEOUT },
9933 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9934 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B5, 0, 0, 0 },
9935 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9936 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_574D, 0, 0, 0 },
9937 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9938 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B2, 0, 0, 0 },
9939 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9940 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C0, 0, 0, 0 },
9941 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9942 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C3, 0, 0, 0 },
9943 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROC_FPGA_E2,
9944 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C4, 0, 0, 0 },
9945 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9946 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B4, 0, 0, 0 },
9947 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9948 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57B1, 0, 0, 0 },
9949 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9950 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C6, 0, 0, 0 },
9951 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9952 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57C8, 0, 0, 0 },
9953 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9954 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57CE, 0, 0, 0 },
9955 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9956 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D5, 0, 0, 0 },
9957 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9958 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D6, 0, 0, 0 },
9959 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9960 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D7, 0, 0, 0 },
9961 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CROCODILE,
9962 PCI_VENDOR_ID_IBM, IPR_SUBS_DEV_ID_57D8, 0, 0, 0 },
9963 { }
9964 };
9965 MODULE_DEVICE_TABLE(pci, ipr_pci_table);
9966
9967 static const struct pci_error_handlers ipr_err_handler = {
9968 .error_detected = ipr_pci_error_detected,
9969 .slot_reset = ipr_pci_slot_reset,
9970 };
9971
9972 static struct pci_driver ipr_driver = {
9973 .name = IPR_NAME,
9974 .id_table = ipr_pci_table,
9975 .probe = ipr_probe,
9976 .remove = ipr_remove,
9977 .shutdown = ipr_shutdown,
9978 .err_handler = &ipr_err_handler,
9979 };
9980
9981 /**
9982 * ipr_halt_done - Shutdown prepare completion
9983 *
9984 * Return value:
9985 * none
9986 **/
9987 static void ipr_halt_done(struct ipr_cmnd *ipr_cmd)
9988 {
9989 list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q);
9990 }
9991
9992 /**
9993 * ipr_halt - Issue shutdown prepare to all adapters
9994 *
9995 * Return value:
9996 * NOTIFY_OK on success / NOTIFY_DONE on failure
9997 **/
9998 static int ipr_halt(struct notifier_block *nb, ulong event, void *buf)
9999 {
10000 struct ipr_cmnd *ipr_cmd;
10001 struct ipr_ioa_cfg *ioa_cfg;
10002 unsigned long flags = 0;
10003
10004 if (event != SYS_RESTART && event != SYS_HALT && event != SYS_POWER_OFF)
10005 return NOTIFY_DONE;
10006
10007 spin_lock(&ipr_driver_lock);
10008
10009 list_for_each_entry(ioa_cfg, &ipr_ioa_head, queue) {
10010 spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
10011 if (!ioa_cfg->hrrq[IPR_INIT_HRRQ].allow_cmds) {
10012 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10013 continue;
10014 }
10015
10016 ipr_cmd = ipr_get_free_ipr_cmnd(ioa_cfg);
10017 ipr_cmd->ioarcb.res_handle = cpu_to_be32(IPR_IOA_RES_HANDLE);
10018 ipr_cmd->ioarcb.cmd_pkt.request_type = IPR_RQTYPE_IOACMD;
10019 ipr_cmd->ioarcb.cmd_pkt.cdb[0] = IPR_IOA_SHUTDOWN;
10020 ipr_cmd->ioarcb.cmd_pkt.cdb[1] = IPR_SHUTDOWN_PREPARE_FOR_NORMAL;
10021
10022 ipr_do_req(ipr_cmd, ipr_halt_done, ipr_timeout, IPR_DEVICE_RESET_TIMEOUT);
10023 spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
10024 }
10025 spin_unlock(&ipr_driver_lock);
10026
10027 return NOTIFY_OK;
10028 }
10029
10030 static struct notifier_block ipr_notifier = {
10031 ipr_halt, NULL, 0
10032 };
10033
10034 /**
10035 * ipr_init - Module entry point
10036 *
10037 * Return value:
10038 * 0 on success / negative value on failure
10039 **/
10040 static int __init ipr_init(void)
10041 {
10042 ipr_info("IBM Power RAID SCSI Device Driver version: %s %s\n",
10043 IPR_DRIVER_VERSION, IPR_DRIVER_DATE);
10044
10045 register_reboot_notifier(&ipr_notifier);
10046 return pci_register_driver(&ipr_driver);
10047 }
10048
10049 /**
10050 * ipr_exit - Module unload
10051 *
10052 * Module unload entry point.
10053 *
10054 * Return value:
10055 * none
10056 **/
10057 static void __exit ipr_exit(void)
10058 {
10059 unregister_reboot_notifier(&ipr_notifier);
10060 pci_unregister_driver(&ipr_driver);
10061 }
10062
10063 module_init(ipr_init);
10064 module_exit(ipr_exit);
kernel source for telekom puls (alcatel/mediatek)