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1da177e4 LT |
1 | /* |
2 | * | |
3 | * Linux MegaRAID device driver | |
4 | * | |
5 | * Copyright (c) 2003-2004 LSI Logic Corporation. | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FILE : megaraid_mbox.c | |
13 | * Version : v2.20.4.5 (Feb 03 2005) | |
14 | * | |
15 | * Authors: | |
16 | * Atul Mukker <Atul.Mukker@lsil.com> | |
17 | * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsil.com> | |
18 | * Manoj Jose <Manoj.Jose@lsil.com> | |
19 | * | |
20 | * List of supported controllers | |
21 | * | |
22 | * OEM Product Name VID DID SSVID SSID | |
23 | * --- ------------ --- --- ---- ---- | |
24 | * Dell PERC3/QC 101E 1960 1028 0471 | |
25 | * Dell PERC3/DC 101E 1960 1028 0493 | |
26 | * Dell PERC3/SC 101E 1960 1028 0475 | |
27 | * Dell PERC3/Di 1028 1960 1028 0123 | |
28 | * Dell PERC4/SC 1000 1960 1028 0520 | |
29 | * Dell PERC4/DC 1000 1960 1028 0518 | |
30 | * Dell PERC4/QC 1000 0407 1028 0531 | |
31 | * Dell PERC4/Di 1028 000F 1028 014A | |
32 | * Dell PERC 4e/Si 1028 0013 1028 016c | |
33 | * Dell PERC 4e/Di 1028 0013 1028 016d | |
34 | * Dell PERC 4e/Di 1028 0013 1028 016e | |
35 | * Dell PERC 4e/Di 1028 0013 1028 016f | |
36 | * Dell PERC 4e/Di 1028 0013 1028 0170 | |
37 | * Dell PERC 4e/DC 1000 0408 1028 0002 | |
38 | * Dell PERC 4e/SC 1000 0408 1028 0001 | |
39 | * | |
40 | * | |
41 | * LSI MegaRAID SCSI 320-0 1000 1960 1000 A520 | |
42 | * LSI MegaRAID SCSI 320-1 1000 1960 1000 0520 | |
43 | * LSI MegaRAID SCSI 320-2 1000 1960 1000 0518 | |
44 | * LSI MegaRAID SCSI 320-0X 1000 0407 1000 0530 | |
45 | * LSI MegaRAID SCSI 320-2X 1000 0407 1000 0532 | |
46 | * LSI MegaRAID SCSI 320-4X 1000 0407 1000 0531 | |
47 | * LSI MegaRAID SCSI 320-1E 1000 0408 1000 0001 | |
48 | * LSI MegaRAID SCSI 320-2E 1000 0408 1000 0002 | |
49 | * LSI MegaRAID SATA 150-4 1000 1960 1000 4523 | |
50 | * LSI MegaRAID SATA 150-6 1000 1960 1000 0523 | |
51 | * LSI MegaRAID SATA 300-4X 1000 0409 1000 3004 | |
52 | * LSI MegaRAID SATA 300-8X 1000 0409 1000 3008 | |
53 | * | |
54 | * INTEL RAID Controller SRCU42X 1000 0407 8086 0532 | |
55 | * INTEL RAID Controller SRCS16 1000 1960 8086 0523 | |
56 | * INTEL RAID Controller SRCU42E 1000 0408 8086 0002 | |
57 | * INTEL RAID Controller SRCZCRX 1000 0407 8086 0530 | |
58 | * INTEL RAID Controller SRCS28X 1000 0409 8086 3008 | |
59 | * INTEL RAID Controller SROMBU42E 1000 0408 8086 3431 | |
60 | * INTEL RAID Controller SROMBU42E 1000 0408 8086 3499 | |
61 | * INTEL RAID Controller SRCU51L 1000 1960 8086 0520 | |
62 | * | |
63 | * FSC MegaRAID PCI Express ROMB 1000 0408 1734 1065 | |
64 | * | |
65 | * ACER MegaRAID ROMB-2E 1000 0408 1025 004D | |
66 | * | |
67 | * NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287 | |
68 | * | |
69 | * For history of changes, see Documentation/ChangeLog.megaraid | |
70 | */ | |
71 | ||
72 | #include "megaraid_mbox.h" | |
73 | ||
74 | static int megaraid_init(void); | |
75 | static void megaraid_exit(void); | |
76 | ||
77 | static int megaraid_probe_one(struct pci_dev*, const struct pci_device_id *); | |
78 | static void megaraid_detach_one(struct pci_dev *); | |
79 | static void megaraid_mbox_shutdown(struct device *); | |
80 | ||
81 | static int megaraid_io_attach(adapter_t *); | |
82 | static void megaraid_io_detach(adapter_t *); | |
83 | ||
84 | static int megaraid_init_mbox(adapter_t *); | |
85 | static void megaraid_fini_mbox(adapter_t *); | |
86 | ||
87 | static int megaraid_alloc_cmd_packets(adapter_t *); | |
88 | static void megaraid_free_cmd_packets(adapter_t *); | |
89 | ||
90 | static int megaraid_mbox_setup_dma_pools(adapter_t *); | |
91 | static void megaraid_mbox_teardown_dma_pools(adapter_t *); | |
92 | ||
93 | static int megaraid_sysfs_alloc_resources(adapter_t *); | |
94 | static void megaraid_sysfs_free_resources(adapter_t *); | |
95 | ||
96 | static int megaraid_abort_handler(struct scsi_cmnd *); | |
97 | static int megaraid_reset_handler(struct scsi_cmnd *); | |
98 | ||
99 | static int mbox_post_sync_cmd(adapter_t *, uint8_t []); | |
100 | static int mbox_post_sync_cmd_fast(adapter_t *, uint8_t []); | |
101 | static int megaraid_busywait_mbox(mraid_device_t *); | |
102 | static int megaraid_mbox_product_info(adapter_t *); | |
103 | static int megaraid_mbox_extended_cdb(adapter_t *); | |
104 | static int megaraid_mbox_support_ha(adapter_t *, uint16_t *); | |
105 | static int megaraid_mbox_support_random_del(adapter_t *); | |
106 | static int megaraid_mbox_get_max_sg(adapter_t *); | |
107 | static void megaraid_mbox_enum_raid_scsi(adapter_t *); | |
108 | static void megaraid_mbox_flush_cache(adapter_t *); | |
109 | ||
110 | static void megaraid_mbox_display_scb(adapter_t *, scb_t *); | |
111 | static void megaraid_mbox_setup_device_map(adapter_t *); | |
112 | ||
113 | static int megaraid_queue_command(struct scsi_cmnd *, | |
114 | void (*)(struct scsi_cmnd *)); | |
115 | static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *); | |
116 | static void megaraid_mbox_runpendq(adapter_t *, scb_t *); | |
117 | static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *, | |
118 | struct scsi_cmnd *); | |
119 | static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *, | |
120 | struct scsi_cmnd *); | |
121 | ||
122 | static irqreturn_t megaraid_isr(int, void *, struct pt_regs *); | |
123 | ||
124 | static void megaraid_mbox_dpc(unsigned long); | |
125 | ||
126 | static ssize_t megaraid_sysfs_show_app_hndl(struct class_device *, char *); | |
127 | static ssize_t megaraid_sysfs_show_ldnum(struct device *, char *); | |
128 | ||
129 | static int megaraid_cmm_register(adapter_t *); | |
130 | static int megaraid_cmm_unregister(adapter_t *); | |
131 | static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t); | |
132 | static int megaraid_mbox_mm_command(adapter_t *, uioc_t *); | |
133 | static void megaraid_mbox_mm_done(adapter_t *, scb_t *); | |
134 | static int gather_hbainfo(adapter_t *, mraid_hba_info_t *); | |
135 | static int wait_till_fw_empty(adapter_t *); | |
136 | ||
137 | ||
138 | ||
139 | MODULE_AUTHOR("LSI Logic Corporation"); | |
140 | MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver"); | |
141 | MODULE_LICENSE("GPL"); | |
142 | MODULE_VERSION(MEGARAID_VERSION); | |
143 | ||
144 | /* | |
145 | * ### modules parameters for driver ### | |
146 | */ | |
147 | ||
148 | /** | |
149 | * Set to enable driver to expose unconfigured disk to kernel | |
150 | */ | |
151 | static int megaraid_expose_unconf_disks = 0; | |
152 | module_param_named(unconf_disks, megaraid_expose_unconf_disks, int, 0); | |
153 | MODULE_PARM_DESC(unconf_disks, | |
154 | "Set to expose unconfigured disks to kernel (default=0)"); | |
155 | ||
156 | /** | |
157 | * driver wait time if the adapter's mailbox is busy | |
158 | */ | |
159 | static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT; | |
160 | module_param_named(busy_wait, max_mbox_busy_wait, int, 0); | |
161 | MODULE_PARM_DESC(busy_wait, | |
162 | "Max wait for mailbox in microseconds if busy (default=10)"); | |
163 | ||
164 | /** | |
165 | * number of sectors per IO command | |
166 | */ | |
167 | static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS; | |
168 | module_param_named(max_sectors, megaraid_max_sectors, int, 0); | |
169 | MODULE_PARM_DESC(max_sectors, | |
170 | "Maximum number of sectors per IO command (default=128)"); | |
171 | ||
172 | /** | |
173 | * number of commands per logical unit | |
174 | */ | |
175 | static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN; | |
176 | module_param_named(cmd_per_lun, megaraid_cmd_per_lun, int, 0); | |
177 | MODULE_PARM_DESC(cmd_per_lun, | |
178 | "Maximum number of commands per logical unit (default=64)"); | |
179 | ||
180 | ||
181 | /** | |
182 | * Fast driver load option, skip scanning for physical devices during load. | |
183 | * This would result in non-disk devices being skipped during driver load | |
184 | * time. These can be later added though, using /proc/scsi/scsi | |
185 | */ | |
186 | static unsigned int megaraid_fast_load = 0; | |
187 | module_param_named(fast_load, megaraid_fast_load, int, 0); | |
188 | MODULE_PARM_DESC(fast_load, | |
189 | "Faster loading of the driver, skips physical devices! (default=0)"); | |
190 | ||
191 | ||
192 | /** | |
193 | * mraid_debug level - threshold for amount of information to be displayed by | |
194 | * the driver. This level can be changed through modules parameters, ioctl or | |
195 | * sysfs/proc interface. By default, print the announcement messages only. | |
196 | */ | |
197 | int mraid_debug_level = CL_ANN; | |
198 | module_param_named(debug_level, mraid_debug_level, int, 0); | |
199 | MODULE_PARM_DESC(debug_level, "Debug level for driver (default=0)"); | |
200 | ||
201 | /* | |
202 | * ### global data ### | |
203 | */ | |
204 | static uint8_t megaraid_mbox_version[8] = | |
205 | { 0x02, 0x20, 0x04, 0x05, 2, 3, 20, 5 }; | |
206 | ||
207 | ||
208 | /* | |
209 | * PCI table for all supported controllers. | |
210 | */ | |
211 | static struct pci_device_id pci_id_table_g[] = { | |
212 | { | |
213 | PCI_VENDOR_ID_DELL, | |
214 | PCI_DEVICE_ID_PERC4_DI_DISCOVERY, | |
215 | PCI_VENDOR_ID_DELL, | |
216 | PCI_SUBSYS_ID_PERC4_DI_DISCOVERY, | |
217 | }, | |
218 | { | |
219 | PCI_VENDOR_ID_LSI_LOGIC, | |
220 | PCI_DEVICE_ID_PERC4_SC, | |
221 | PCI_VENDOR_ID_DELL, | |
222 | PCI_SUBSYS_ID_PERC4_SC, | |
223 | }, | |
224 | { | |
225 | PCI_VENDOR_ID_LSI_LOGIC, | |
226 | PCI_DEVICE_ID_PERC4_DC, | |
227 | PCI_VENDOR_ID_DELL, | |
228 | PCI_SUBSYS_ID_PERC4_DC, | |
229 | }, | |
230 | { | |
231 | PCI_VENDOR_ID_LSI_LOGIC, | |
232 | PCI_DEVICE_ID_PERC4_QC, | |
233 | PCI_VENDOR_ID_DELL, | |
234 | PCI_SUBSYS_ID_PERC4_QC, | |
235 | }, | |
236 | { | |
237 | PCI_VENDOR_ID_DELL, | |
238 | PCI_DEVICE_ID_PERC4_DI_EVERGLADES, | |
239 | PCI_VENDOR_ID_DELL, | |
240 | PCI_SUBSYS_ID_PERC4_DI_EVERGLADES, | |
241 | }, | |
242 | { | |
243 | PCI_VENDOR_ID_DELL, | |
244 | PCI_DEVICE_ID_PERC4E_SI_BIGBEND, | |
245 | PCI_VENDOR_ID_DELL, | |
246 | PCI_SUBSYS_ID_PERC4E_SI_BIGBEND, | |
247 | }, | |
248 | { | |
249 | PCI_VENDOR_ID_DELL, | |
250 | PCI_DEVICE_ID_PERC4E_DI_KOBUK, | |
251 | PCI_VENDOR_ID_DELL, | |
252 | PCI_SUBSYS_ID_PERC4E_DI_KOBUK, | |
253 | }, | |
254 | { | |
255 | PCI_VENDOR_ID_DELL, | |
256 | PCI_DEVICE_ID_PERC4E_DI_CORVETTE, | |
257 | PCI_VENDOR_ID_DELL, | |
258 | PCI_SUBSYS_ID_PERC4E_DI_CORVETTE, | |
259 | }, | |
260 | { | |
261 | PCI_VENDOR_ID_DELL, | |
262 | PCI_DEVICE_ID_PERC4E_DI_EXPEDITION, | |
263 | PCI_VENDOR_ID_DELL, | |
264 | PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION, | |
265 | }, | |
266 | { | |
267 | PCI_VENDOR_ID_DELL, | |
268 | PCI_DEVICE_ID_PERC4E_DI_GUADALUPE, | |
269 | PCI_VENDOR_ID_DELL, | |
270 | PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE, | |
271 | }, | |
272 | { | |
273 | PCI_VENDOR_ID_LSI_LOGIC, | |
274 | PCI_DEVICE_ID_PERC4E_DC_320_2E, | |
275 | PCI_VENDOR_ID_DELL, | |
276 | PCI_SUBSYS_ID_PERC4E_DC_320_2E, | |
277 | }, | |
278 | { | |
279 | PCI_VENDOR_ID_LSI_LOGIC, | |
280 | PCI_DEVICE_ID_PERC4E_SC_320_1E, | |
281 | PCI_VENDOR_ID_DELL, | |
282 | PCI_SUBSYS_ID_PERC4E_SC_320_1E, | |
283 | }, | |
284 | { | |
285 | PCI_VENDOR_ID_AMI, | |
286 | PCI_DEVICE_ID_AMI_MEGARAID3, | |
287 | PCI_VENDOR_ID_DELL, | |
288 | PCI_SUBSYS_ID_PERC3_QC, | |
289 | }, | |
290 | { | |
291 | PCI_VENDOR_ID_AMI, | |
292 | PCI_DEVICE_ID_AMI_MEGARAID3, | |
293 | PCI_VENDOR_ID_DELL, | |
294 | PCI_SUBSYS_ID_PERC3_DC, | |
295 | }, | |
296 | { | |
297 | PCI_VENDOR_ID_AMI, | |
298 | PCI_DEVICE_ID_AMI_MEGARAID3, | |
299 | PCI_VENDOR_ID_DELL, | |
300 | PCI_SUBSYS_ID_PERC3_SC, | |
301 | }, | |
302 | { | |
303 | PCI_VENDOR_ID_AMI, | |
304 | PCI_DEVICE_ID_AMI_MEGARAID3, | |
305 | PCI_VENDOR_ID_AMI, | |
306 | PCI_SUBSYS_ID_PERC3_SC, | |
307 | }, | |
308 | { | |
309 | PCI_VENDOR_ID_AMI, | |
310 | PCI_DEVICE_ID_AMI_MEGARAID3, | |
311 | PCI_VENDOR_ID_AMI, | |
312 | PCI_SUBSYS_ID_PERC3_DC, | |
313 | }, | |
314 | { | |
315 | PCI_VENDOR_ID_LSI_LOGIC, | |
316 | PCI_DEVICE_ID_MEGARAID_SCSI_320_0, | |
317 | PCI_VENDOR_ID_LSI_LOGIC, | |
318 | PCI_SUBSYS_ID_MEGARAID_SCSI_320_0, | |
319 | }, | |
320 | { | |
321 | PCI_VENDOR_ID_LSI_LOGIC, | |
322 | PCI_DEVICE_ID_MEGARAID_SCSI_320_1, | |
323 | PCI_VENDOR_ID_LSI_LOGIC, | |
324 | PCI_SUBSYS_ID_MEGARAID_SCSI_320_1, | |
325 | }, | |
326 | { | |
327 | PCI_VENDOR_ID_LSI_LOGIC, | |
328 | PCI_DEVICE_ID_MEGARAID_SCSI_320_2, | |
329 | PCI_VENDOR_ID_LSI_LOGIC, | |
330 | PCI_SUBSYS_ID_MEGARAID_SCSI_320_2, | |
331 | }, | |
332 | { | |
333 | PCI_VENDOR_ID_LSI_LOGIC, | |
334 | PCI_DEVICE_ID_MEGARAID_SCSI_320_0x, | |
335 | PCI_VENDOR_ID_LSI_LOGIC, | |
336 | PCI_SUBSYS_ID_MEGARAID_SCSI_320_0x, | |
337 | }, | |
338 | { | |
339 | PCI_VENDOR_ID_LSI_LOGIC, | |
340 | PCI_DEVICE_ID_MEGARAID_SCSI_320_2x, | |
341 | PCI_VENDOR_ID_LSI_LOGIC, | |
342 | PCI_SUBSYS_ID_MEGARAID_SCSI_320_2x, | |
343 | }, | |
344 | { | |
345 | PCI_VENDOR_ID_LSI_LOGIC, | |
346 | PCI_DEVICE_ID_MEGARAID_SCSI_320_4x, | |
347 | PCI_VENDOR_ID_LSI_LOGIC, | |
348 | PCI_SUBSYS_ID_MEGARAID_SCSI_320_4x, | |
349 | }, | |
350 | { | |
351 | PCI_VENDOR_ID_LSI_LOGIC, | |
352 | PCI_DEVICE_ID_MEGARAID_SCSI_320_1E, | |
353 | PCI_VENDOR_ID_LSI_LOGIC, | |
354 | PCI_SUBSYS_ID_MEGARAID_SCSI_320_1E, | |
355 | }, | |
356 | { | |
357 | PCI_VENDOR_ID_LSI_LOGIC, | |
358 | PCI_DEVICE_ID_MEGARAID_SCSI_320_2E, | |
359 | PCI_VENDOR_ID_LSI_LOGIC, | |
360 | PCI_SUBSYS_ID_MEGARAID_SCSI_320_2E, | |
361 | }, | |
362 | { | |
363 | PCI_VENDOR_ID_LSI_LOGIC, | |
364 | PCI_DEVICE_ID_MEGARAID_I4_133_RAID, | |
365 | PCI_VENDOR_ID_LSI_LOGIC, | |
366 | PCI_SUBSYS_ID_MEGARAID_I4_133_RAID, | |
367 | }, | |
368 | { | |
369 | PCI_VENDOR_ID_LSI_LOGIC, | |
370 | PCI_DEVICE_ID_MEGARAID_SATA_150_4, | |
371 | PCI_VENDOR_ID_LSI_LOGIC, | |
372 | PCI_SUBSYS_ID_MEGARAID_SATA_150_4, | |
373 | }, | |
374 | { | |
375 | PCI_VENDOR_ID_LSI_LOGIC, | |
376 | PCI_DEVICE_ID_MEGARAID_SATA_150_6, | |
377 | PCI_VENDOR_ID_LSI_LOGIC, | |
378 | PCI_SUBSYS_ID_MEGARAID_SATA_150_6, | |
379 | }, | |
380 | { | |
381 | PCI_VENDOR_ID_LSI_LOGIC, | |
382 | PCI_DEVICE_ID_MEGARAID_SATA_300_4x, | |
383 | PCI_VENDOR_ID_LSI_LOGIC, | |
384 | PCI_SUBSYS_ID_MEGARAID_SATA_300_4x, | |
385 | }, | |
386 | { | |
387 | PCI_VENDOR_ID_LSI_LOGIC, | |
388 | PCI_DEVICE_ID_MEGARAID_SATA_300_8x, | |
389 | PCI_VENDOR_ID_LSI_LOGIC, | |
390 | PCI_SUBSYS_ID_MEGARAID_SATA_300_8x, | |
391 | }, | |
392 | { | |
393 | PCI_VENDOR_ID_LSI_LOGIC, | |
394 | PCI_DEVICE_ID_INTEL_RAID_SRCU42X, | |
395 | PCI_VENDOR_ID_INTEL, | |
396 | PCI_SUBSYS_ID_INTEL_RAID_SRCU42X, | |
397 | }, | |
398 | { | |
399 | PCI_VENDOR_ID_LSI_LOGIC, | |
400 | PCI_DEVICE_ID_INTEL_RAID_SRCS16, | |
401 | PCI_VENDOR_ID_INTEL, | |
402 | PCI_SUBSYS_ID_INTEL_RAID_SRCS16, | |
403 | }, | |
404 | { | |
405 | PCI_VENDOR_ID_LSI_LOGIC, | |
406 | PCI_DEVICE_ID_INTEL_RAID_SRCU42E, | |
407 | PCI_VENDOR_ID_INTEL, | |
408 | PCI_SUBSYS_ID_INTEL_RAID_SRCU42E, | |
409 | }, | |
410 | { | |
411 | PCI_VENDOR_ID_LSI_LOGIC, | |
412 | PCI_DEVICE_ID_INTEL_RAID_SRCZCRX, | |
413 | PCI_VENDOR_ID_INTEL, | |
414 | PCI_SUBSYS_ID_INTEL_RAID_SRCZCRX, | |
415 | }, | |
416 | { | |
417 | PCI_VENDOR_ID_LSI_LOGIC, | |
418 | PCI_DEVICE_ID_INTEL_RAID_SRCS28X, | |
419 | PCI_VENDOR_ID_INTEL, | |
420 | PCI_SUBSYS_ID_INTEL_RAID_SRCS28X, | |
421 | }, | |
422 | { | |
423 | PCI_VENDOR_ID_LSI_LOGIC, | |
424 | PCI_DEVICE_ID_INTEL_RAID_SROMBU42E_ALIEF, | |
425 | PCI_VENDOR_ID_INTEL, | |
426 | PCI_SUBSYS_ID_INTEL_RAID_SROMBU42E_ALIEF, | |
427 | }, | |
428 | { | |
429 | PCI_VENDOR_ID_LSI_LOGIC, | |
430 | PCI_DEVICE_ID_INTEL_RAID_SROMBU42E_HARWICH, | |
431 | PCI_VENDOR_ID_INTEL, | |
432 | PCI_SUBSYS_ID_INTEL_RAID_SROMBU42E_HARWICH, | |
433 | }, | |
434 | { | |
435 | PCI_VENDOR_ID_LSI_LOGIC, | |
436 | PCI_DEVICE_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK, | |
437 | PCI_VENDOR_ID_INTEL, | |
438 | PCI_SUBSYS_ID_INTEL_RAID_SRCU41L_LAKE_SHETEK, | |
439 | }, | |
440 | { | |
441 | PCI_VENDOR_ID_LSI_LOGIC, | |
442 | PCI_DEVICE_ID_FSC_MEGARAID_PCI_EXPRESS_ROMB, | |
443 | PCI_SUBSYS_ID_FSC, | |
444 | PCI_SUBSYS_ID_FSC_MEGARAID_PCI_EXPRESS_ROMB, | |
445 | }, | |
446 | { | |
447 | PCI_VENDOR_ID_LSI_LOGIC, | |
448 | PCI_DEVICE_ID_MEGARAID_ACER_ROMB_2E, | |
449 | PCI_VENDOR_ID_AI, | |
450 | PCI_SUBSYS_ID_MEGARAID_ACER_ROMB_2E, | |
451 | }, | |
452 | { | |
453 | PCI_VENDOR_ID_LSI_LOGIC, | |
454 | PCI_DEVICE_ID_MEGARAID_NEC_ROMB_2E, | |
455 | PCI_VENDOR_ID_NEC, | |
456 | PCI_SUBSYS_ID_MEGARAID_NEC_ROMB_2E, | |
457 | }, | |
458 | {0} /* Terminating entry */ | |
459 | }; | |
460 | MODULE_DEVICE_TABLE(pci, pci_id_table_g); | |
461 | ||
462 | ||
463 | static struct pci_driver megaraid_pci_driver_g = { | |
464 | .name = "megaraid", | |
465 | .id_table = pci_id_table_g, | |
466 | .probe = megaraid_probe_one, | |
467 | .remove = __devexit_p(megaraid_detach_one), | |
468 | .driver = { | |
469 | .shutdown = megaraid_mbox_shutdown, | |
470 | } | |
471 | }; | |
472 | ||
473 | ||
474 | ||
475 | // definitions for the device attributes for exporting logical drive number | |
476 | // for a scsi address (Host, Channel, Id, Lun) | |
477 | ||
478 | CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl, | |
479 | NULL); | |
480 | ||
481 | // Host template initializer for megaraid mbox sysfs device attributes | |
482 | static struct class_device_attribute *megaraid_shost_attrs[] = { | |
483 | &class_device_attr_megaraid_mbox_app_hndl, | |
484 | NULL, | |
485 | }; | |
486 | ||
487 | ||
488 | DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL); | |
489 | ||
490 | // Host template initializer for megaraid mbox sysfs device attributes | |
491 | static struct device_attribute *megaraid_sdev_attrs[] = { | |
492 | &dev_attr_megaraid_mbox_ld, | |
493 | NULL, | |
494 | }; | |
495 | ||
496 | ||
497 | /* | |
498 | * Scsi host template for megaraid unified driver | |
499 | */ | |
500 | static struct scsi_host_template megaraid_template_g = { | |
501 | .module = THIS_MODULE, | |
502 | .name = "LSI Logic MegaRAID driver", | |
503 | .proc_name = "megaraid", | |
504 | .queuecommand = megaraid_queue_command, | |
505 | .eh_abort_handler = megaraid_abort_handler, | |
506 | .eh_device_reset_handler = megaraid_reset_handler, | |
507 | .eh_bus_reset_handler = megaraid_reset_handler, | |
508 | .eh_host_reset_handler = megaraid_reset_handler, | |
509 | .use_clustering = ENABLE_CLUSTERING, | |
510 | .sdev_attrs = megaraid_sdev_attrs, | |
511 | .shost_attrs = megaraid_shost_attrs, | |
512 | }; | |
513 | ||
514 | ||
515 | /** | |
516 | * megaraid_init - module load hook | |
517 | * | |
518 | * We register ourselves as hotplug enabled module and let PCI subsystem | |
519 | * discover our adaters | |
520 | **/ | |
521 | static int __init | |
522 | megaraid_init(void) | |
523 | { | |
524 | int rval; | |
525 | ||
526 | // Announce the driver version | |
527 | con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION, | |
528 | MEGARAID_EXT_VERSION)); | |
529 | ||
530 | // check validity of module parameters | |
531 | if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) { | |
532 | ||
533 | con_log(CL_ANN, (KERN_WARNING | |
534 | "megaraid mailbox: max commands per lun reset to %d\n", | |
535 | MBOX_MAX_SCSI_CMDS)); | |
536 | ||
537 | megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS; | |
538 | } | |
539 | ||
540 | ||
541 | // register as a PCI hot-plug driver module | |
542 | if ((rval = pci_module_init(&megaraid_pci_driver_g))) { | |
543 | con_log(CL_ANN, (KERN_WARNING | |
544 | "megaraid: could not register hotplug support.\n")); | |
545 | } | |
546 | ||
547 | return rval; | |
548 | } | |
549 | ||
550 | ||
551 | /** | |
552 | * megaraid_exit - driver unload entry point | |
553 | * | |
554 | * We simply unwrap the megaraid_init routine here | |
555 | */ | |
556 | static void __exit | |
557 | megaraid_exit(void) | |
558 | { | |
559 | con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n")); | |
560 | ||
561 | // unregister as PCI hotplug driver | |
562 | pci_unregister_driver(&megaraid_pci_driver_g); | |
563 | ||
564 | return; | |
565 | } | |
566 | ||
567 | ||
568 | /** | |
569 | * megaraid_probe_one - PCI hotplug entry point | |
570 | * @param pdev : handle to this controller's PCI configuration space | |
571 | * @param id : pci device id of the class of controllers | |
572 | * | |
573 | * This routine should be called whenever a new adapter is detected by the | |
574 | * PCI hotplug susbsytem. | |
575 | **/ | |
576 | static int __devinit | |
577 | megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) | |
578 | { | |
579 | adapter_t *adapter; | |
580 | ||
581 | ||
582 | // detected a new controller | |
583 | con_log(CL_ANN, (KERN_INFO | |
584 | "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", | |
585 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
586 | pdev->subsystem_device)); | |
587 | ||
588 | con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number, | |
589 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn))); | |
590 | ||
591 | if (pci_enable_device(pdev)) { | |
592 | con_log(CL_ANN, (KERN_WARNING | |
593 | "megaraid: pci_enable_device failed\n")); | |
594 | ||
595 | return -ENODEV; | |
596 | } | |
597 | ||
598 | // Enable bus-mastering on this controller | |
599 | pci_set_master(pdev); | |
600 | ||
601 | // Allocate the per driver initialization structure | |
602 | adapter = kmalloc(sizeof(adapter_t), GFP_KERNEL); | |
603 | ||
604 | if (adapter == NULL) { | |
605 | con_log(CL_ANN, (KERN_WARNING | |
606 | "megaraid: out of memory, %s %d.\n", __FUNCTION__, __LINE__)); | |
607 | ||
608 | goto out_probe_one; | |
609 | } | |
610 | memset(adapter, 0, sizeof(adapter_t)); | |
611 | ||
612 | ||
613 | // set up PCI related soft state and other pre-known parameters | |
614 | adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
615 | adapter->irq = pdev->irq; | |
616 | adapter->pdev = pdev; | |
617 | ||
618 | atomic_set(&adapter->being_detached, 0); | |
619 | ||
620 | // Setup the default DMA mask. This would be changed later on | |
621 | // depending on hardware capabilities | |
622 | if (pci_set_dma_mask(adapter->pdev, 0xFFFFFFFF) != 0) { | |
623 | ||
624 | con_log(CL_ANN, (KERN_WARNING | |
625 | "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); | |
626 | ||
627 | goto out_free_adapter; | |
628 | } | |
629 | ||
630 | ||
631 | // Initialize the synchronization lock for kernel and LLD | |
632 | spin_lock_init(&adapter->lock); | |
633 | adapter->host_lock = &adapter->lock; | |
634 | ||
635 | ||
636 | // Initialize the command queues: the list of free SCBs and the list | |
637 | // of pending SCBs. | |
638 | INIT_LIST_HEAD(&adapter->kscb_pool); | |
639 | spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); | |
640 | ||
641 | INIT_LIST_HEAD(&adapter->pend_list); | |
642 | spin_lock_init(PENDING_LIST_LOCK(adapter)); | |
643 | ||
644 | INIT_LIST_HEAD(&adapter->completed_list); | |
645 | spin_lock_init(COMPLETED_LIST_LOCK(adapter)); | |
646 | ||
647 | ||
648 | // Start the mailbox based controller | |
649 | if (megaraid_init_mbox(adapter) != 0) { | |
650 | con_log(CL_ANN, (KERN_WARNING | |
651 | "megaraid: maibox adapter did not initialize\n")); | |
652 | ||
653 | goto out_free_adapter; | |
654 | } | |
655 | ||
656 | // Register with LSI Common Management Module | |
657 | if (megaraid_cmm_register(adapter) != 0) { | |
658 | ||
659 | con_log(CL_ANN, (KERN_WARNING | |
660 | "megaraid: could not register with management module\n")); | |
661 | ||
662 | goto out_fini_mbox; | |
663 | } | |
664 | ||
665 | // setup adapter handle in PCI soft state | |
666 | pci_set_drvdata(pdev, adapter); | |
667 | ||
668 | // attach with scsi mid-layer | |
669 | if (megaraid_io_attach(adapter) != 0) { | |
670 | ||
671 | con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); | |
672 | ||
673 | goto out_cmm_unreg; | |
674 | } | |
675 | ||
676 | return 0; | |
677 | ||
678 | out_cmm_unreg: | |
679 | pci_set_drvdata(pdev, NULL); | |
680 | megaraid_cmm_unregister(adapter); | |
681 | out_fini_mbox: | |
682 | megaraid_fini_mbox(adapter); | |
683 | out_free_adapter: | |
684 | kfree(adapter); | |
685 | out_probe_one: | |
686 | pci_disable_device(pdev); | |
687 | ||
688 | return -ENODEV; | |
689 | } | |
690 | ||
691 | ||
692 | /** | |
693 | * megaraid_detach_one - release the framework resources and call LLD release | |
694 | * routine | |
695 | * @param pdev : handle for our PCI cofiguration space | |
696 | * | |
697 | * This routine is called during driver unload. We free all the allocated | |
698 | * resources and call the corresponding LLD so that it can also release all | |
699 | * its resources. | |
700 | * | |
701 | * This routine is also called from the PCI hotplug system | |
702 | **/ | |
703 | static void | |
704 | megaraid_detach_one(struct pci_dev *pdev) | |
705 | { | |
706 | adapter_t *adapter; | |
707 | struct Scsi_Host *host; | |
708 | ||
709 | ||
710 | // Start a rollback on this adapter | |
711 | adapter = pci_get_drvdata(pdev); | |
712 | ||
713 | if (!adapter) { | |
714 | con_log(CL_ANN, (KERN_CRIT | |
715 | "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
716 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
717 | pdev->subsystem_device)); | |
718 | ||
719 | return; | |
720 | } | |
721 | else { | |
722 | con_log(CL_ANN, (KERN_NOTICE | |
723 | "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
724 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
725 | pdev->subsystem_device)); | |
726 | } | |
727 | ||
728 | ||
729 | host = adapter->host; | |
730 | ||
731 | // do not allow any more requests from the management module for this | |
732 | // adapter. | |
733 | // FIXME: How do we account for the request which might still be | |
734 | // pending with us? | |
735 | atomic_set(&adapter->being_detached, 1); | |
736 | ||
737 | // detach from the IO sub-system | |
738 | megaraid_io_detach(adapter); | |
739 | ||
740 | // reset the device state in the PCI structure. We check this | |
741 | // condition when we enter here. If the device state is NULL, | |
742 | // that would mean the device has already been removed | |
743 | pci_set_drvdata(pdev, NULL); | |
744 | ||
745 | // Unregister from common management module | |
746 | // | |
747 | // FIXME: this must return success or failure for conditions if there | |
748 | // is a command pending with LLD or not. | |
749 | megaraid_cmm_unregister(adapter); | |
750 | ||
751 | // finalize the mailbox based controller and release all resources | |
752 | megaraid_fini_mbox(adapter); | |
753 | ||
754 | kfree(adapter); | |
755 | ||
756 | scsi_host_put(host); | |
757 | ||
758 | pci_disable_device(pdev); | |
759 | ||
760 | return; | |
761 | } | |
762 | ||
763 | ||
764 | /** | |
765 | * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA | |
766 | * @param device : generice driver model device | |
767 | * | |
768 | * Shutdown notification, perform flush cache | |
769 | */ | |
770 | static void | |
771 | megaraid_mbox_shutdown(struct device *device) | |
772 | { | |
773 | adapter_t *adapter = pci_get_drvdata(to_pci_dev(device)); | |
774 | static int counter; | |
775 | ||
776 | if (!adapter) { | |
777 | con_log(CL_ANN, (KERN_WARNING | |
778 | "megaraid: null device in shutdown\n")); | |
779 | return; | |
780 | } | |
781 | ||
782 | // flush caches now | |
783 | con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", | |
784 | counter++)); | |
785 | ||
786 | megaraid_mbox_flush_cache(adapter); | |
787 | ||
788 | con_log(CL_ANN, ("done\n")); | |
789 | } | |
790 | ||
791 | ||
792 | /** | |
793 | * megaraid_io_attach - attach a device with the IO subsystem | |
794 | * @param adapter : controller's soft state | |
795 | * | |
796 | * Attach this device with the IO subsystem | |
797 | **/ | |
798 | static int | |
799 | megaraid_io_attach(adapter_t *adapter) | |
800 | { | |
801 | struct Scsi_Host *host; | |
802 | ||
803 | // Initialize SCSI Host structure | |
804 | host = scsi_host_alloc(&megaraid_template_g, 8); | |
805 | if (!host) { | |
806 | con_log(CL_ANN, (KERN_WARNING | |
807 | "megaraid mbox: scsi_register failed\n")); | |
808 | ||
809 | return -1; | |
810 | } | |
811 | ||
812 | SCSIHOST2ADAP(host) = (caddr_t)adapter; | |
813 | adapter->host = host; | |
814 | ||
815 | // export the parameters required by the mid-layer | |
816 | scsi_assign_lock(host, adapter->host_lock); | |
817 | scsi_set_device(host, &adapter->pdev->dev); | |
818 | ||
819 | host->irq = adapter->irq; | |
820 | host->unique_id = adapter->unique_id; | |
821 | host->can_queue = adapter->max_cmds; | |
822 | host->this_id = adapter->init_id; | |
823 | host->sg_tablesize = adapter->sglen; | |
824 | host->max_sectors = adapter->max_sectors; | |
825 | host->cmd_per_lun = adapter->cmd_per_lun; | |
826 | host->max_channel = adapter->max_channel; | |
827 | host->max_id = adapter->max_target; | |
828 | host->max_lun = adapter->max_lun; | |
829 | ||
830 | ||
831 | // notify mid-layer about the new controller | |
832 | if (scsi_add_host(host, &adapter->pdev->dev)) { | |
833 | ||
834 | con_log(CL_ANN, (KERN_WARNING | |
835 | "megaraid mbox: scsi_add_host failed\n")); | |
836 | ||
837 | scsi_host_put(host); | |
838 | ||
839 | return -1; | |
840 | } | |
841 | ||
842 | scsi_scan_host(host); | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
847 | ||
848 | /** | |
849 | * megaraid_io_detach - detach a device from the IO subsystem | |
850 | * @param adapter : controller's soft state | |
851 | * | |
852 | * Detach this device from the IO subsystem | |
853 | **/ | |
854 | static void | |
855 | megaraid_io_detach(adapter_t *adapter) | |
856 | { | |
857 | struct Scsi_Host *host; | |
858 | ||
859 | con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); | |
860 | ||
861 | host = adapter->host; | |
862 | ||
863 | scsi_remove_host(host); | |
864 | ||
865 | return; | |
866 | } | |
867 | ||
868 | ||
869 | /* | |
870 | * START: Mailbox Low Level Driver | |
871 | * | |
872 | * This is section specific to the single mailbox based controllers | |
873 | */ | |
874 | ||
875 | /** | |
876 | * megaraid_init_mbox - initialize controller | |
877 | * @param adapter - our soft state | |
878 | * | |
879 | * . Allocate 16-byte aligned mailbox memory for firmware handshake | |
880 | * . Allocate controller's memory resources | |
881 | * . Find out all initialization data | |
882 | * . Allocate memory required for all the commands | |
883 | * . Use internal library of FW routines, build up complete soft state | |
884 | */ | |
885 | static int __init | |
886 | megaraid_init_mbox(adapter_t *adapter) | |
887 | { | |
888 | struct pci_dev *pdev; | |
889 | mraid_device_t *raid_dev; | |
890 | int i; | |
891 | ||
892 | ||
893 | adapter->ito = MBOX_TIMEOUT; | |
894 | pdev = adapter->pdev; | |
895 | ||
896 | /* | |
897 | * Allocate and initialize the init data structure for mailbox | |
898 | * controllers | |
899 | */ | |
900 | raid_dev = kmalloc(sizeof(mraid_device_t), GFP_KERNEL); | |
901 | if (raid_dev == NULL) return -1; | |
902 | ||
903 | memset(raid_dev, 0, sizeof(mraid_device_t)); | |
904 | ||
905 | /* | |
906 | * Attach the adapter soft state to raid device soft state | |
907 | */ | |
908 | adapter->raid_device = (caddr_t)raid_dev; | |
909 | raid_dev->fast_load = megaraid_fast_load; | |
910 | ||
911 | ||
912 | // our baseport | |
913 | raid_dev->baseport = pci_resource_start(pdev, 0); | |
914 | ||
915 | if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { | |
916 | ||
917 | con_log(CL_ANN, (KERN_WARNING | |
918 | "megaraid: mem region busy\n")); | |
919 | ||
920 | goto out_free_raid_dev; | |
921 | } | |
922 | ||
923 | raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); | |
924 | ||
925 | if (!raid_dev->baseaddr) { | |
926 | ||
927 | con_log(CL_ANN, (KERN_WARNING | |
928 | "megaraid: could not map hba memory\n") ); | |
929 | ||
930 | goto out_release_regions; | |
931 | } | |
932 | ||
933 | // | |
934 | // Setup the rest of the soft state using the library of FW routines | |
935 | // | |
936 | ||
937 | // request IRQ and register the interrupt service routine | |
938 | if (request_irq(adapter->irq, megaraid_isr, SA_SHIRQ, "megaraid", | |
939 | adapter)) { | |
940 | ||
941 | con_log(CL_ANN, (KERN_WARNING | |
942 | "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); | |
943 | ||
944 | goto out_iounmap; | |
945 | } | |
946 | ||
947 | ||
948 | // initialize the mutual exclusion lock for the mailbox | |
949 | spin_lock_init(&raid_dev->mailbox_lock); | |
950 | ||
951 | // allocate memory required for commands | |
952 | if (megaraid_alloc_cmd_packets(adapter) != 0) { | |
953 | goto out_free_irq; | |
954 | } | |
955 | ||
956 | // Product info | |
957 | if (megaraid_mbox_product_info(adapter) != 0) { | |
958 | goto out_alloc_cmds; | |
959 | } | |
960 | ||
961 | // Do we support extended CDBs | |
962 | adapter->max_cdb_sz = 10; | |
963 | if (megaraid_mbox_extended_cdb(adapter) == 0) { | |
964 | adapter->max_cdb_sz = 16; | |
965 | } | |
966 | ||
967 | /* | |
968 | * Do we support cluster environment, if we do, what is the initiator | |
969 | * id. | |
970 | * NOTE: In a non-cluster aware firmware environment, the LLD should | |
971 | * return 7 as initiator id. | |
972 | */ | |
973 | adapter->ha = 0; | |
974 | adapter->init_id = -1; | |
975 | if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { | |
976 | adapter->ha = 1; | |
977 | } | |
978 | ||
979 | /* | |
980 | * Prepare the device ids array to have the mapping between the kernel | |
981 | * device address and megaraid device address. | |
982 | * We export the physical devices on their actual addresses. The | |
983 | * logical drives are exported on a virtual SCSI channel | |
984 | */ | |
985 | megaraid_mbox_setup_device_map(adapter); | |
986 | ||
987 | // If the firmware supports random deletion, update the device id map | |
988 | if (megaraid_mbox_support_random_del(adapter)) { | |
989 | ||
990 | // Change the logical drives numbers in device_ids array one | |
991 | // slot in device_ids is reserved for target id, that's why | |
992 | // "<=" below | |
993 | for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { | |
994 | adapter->device_ids[adapter->max_channel][i] += 0x80; | |
995 | } | |
996 | adapter->device_ids[adapter->max_channel][adapter->init_id] = | |
997 | 0xFF; | |
998 | ||
999 | raid_dev->random_del_supported = 1; | |
1000 | } | |
1001 | ||
1002 | /* | |
1003 | * find out the maximum number of scatter-gather elements supported by | |
1004 | * this firmware | |
1005 | */ | |
1006 | adapter->sglen = megaraid_mbox_get_max_sg(adapter); | |
1007 | ||
1008 | // enumerate RAID and SCSI channels so that all devices on SCSI | |
1009 | // channels can later be exported, including disk devices | |
1010 | megaraid_mbox_enum_raid_scsi(adapter); | |
1011 | ||
1012 | /* | |
1013 | * Other parameters required by upper layer | |
1014 | * | |
1015 | * maximum number of sectors per IO command | |
1016 | */ | |
1017 | adapter->max_sectors = megaraid_max_sectors; | |
1018 | ||
1019 | /* | |
1020 | * number of queued commands per LUN. | |
1021 | */ | |
1022 | adapter->cmd_per_lun = megaraid_cmd_per_lun; | |
1023 | ||
1024 | /* | |
1025 | * Allocate resources required to issue FW calls, when sysfs is | |
1026 | * accessed | |
1027 | */ | |
1028 | if (megaraid_sysfs_alloc_resources(adapter) != 0) { | |
1029 | goto out_alloc_cmds; | |
1030 | } | |
1031 | ||
1032 | // Set the DMA mask to 64-bit. All supported controllers as capable of | |
1033 | // DMA in this range | |
1034 | if (pci_set_dma_mask(adapter->pdev, 0xFFFFFFFFFFFFFFFFULL) != 0) { | |
1035 | ||
1036 | con_log(CL_ANN, (KERN_WARNING | |
1037 | "megaraid: could not set DMA mask for 64-bit.\n")); | |
1038 | ||
1039 | goto out_free_sysfs_res; | |
1040 | } | |
1041 | ||
1042 | // setup tasklet for DPC | |
1043 | tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, | |
1044 | (unsigned long)adapter); | |
1045 | ||
1046 | con_log(CL_DLEVEL1, (KERN_INFO | |
1047 | "megaraid mbox hba successfully initialized\n")); | |
1048 | ||
1049 | return 0; | |
1050 | ||
1051 | out_free_sysfs_res: | |
1052 | megaraid_sysfs_free_resources(adapter); | |
1053 | out_alloc_cmds: | |
1054 | megaraid_free_cmd_packets(adapter); | |
1055 | out_free_irq: | |
1056 | free_irq(adapter->irq, adapter); | |
1057 | out_iounmap: | |
1058 | iounmap(raid_dev->baseaddr); | |
1059 | out_release_regions: | |
1060 | pci_release_regions(pdev); | |
1061 | out_free_raid_dev: | |
1062 | kfree(raid_dev); | |
1063 | ||
1064 | return -1; | |
1065 | } | |
1066 | ||
1067 | ||
1068 | /** | |
1069 | * megaraid_fini_mbox - undo controller initialization | |
1070 | * @param adapter : our soft state | |
1071 | */ | |
1072 | static void | |
1073 | megaraid_fini_mbox(adapter_t *adapter) | |
1074 | { | |
1075 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1076 | ||
1077 | // flush all caches | |
1078 | megaraid_mbox_flush_cache(adapter); | |
1079 | ||
1080 | tasklet_kill(&adapter->dpc_h); | |
1081 | ||
1082 | megaraid_sysfs_free_resources(adapter); | |
1083 | ||
1084 | megaraid_free_cmd_packets(adapter); | |
1085 | ||
1086 | free_irq(adapter->irq, adapter); | |
1087 | ||
1088 | iounmap(raid_dev->baseaddr); | |
1089 | ||
1090 | pci_release_regions(adapter->pdev); | |
1091 | ||
1092 | kfree(raid_dev); | |
1093 | ||
1094 | return; | |
1095 | } | |
1096 | ||
1097 | ||
1098 | /** | |
1099 | * megaraid_alloc_cmd_packets - allocate shared mailbox | |
1100 | * @param adapter : soft state of the raid controller | |
1101 | * | |
1102 | * Allocate and align the shared mailbox. This maibox is used to issue | |
1103 | * all the commands. For IO based controllers, the mailbox is also regsitered | |
1104 | * with the FW. Allocate memory for all commands as well. | |
1105 | * This is our big allocator | |
1106 | */ | |
1107 | static int | |
1108 | megaraid_alloc_cmd_packets(adapter_t *adapter) | |
1109 | { | |
1110 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1111 | struct pci_dev *pdev; | |
1112 | unsigned long align; | |
1113 | scb_t *scb; | |
1114 | mbox_ccb_t *ccb; | |
1115 | struct mraid_pci_blk *epthru_pci_blk; | |
1116 | struct mraid_pci_blk *sg_pci_blk; | |
1117 | struct mraid_pci_blk *mbox_pci_blk; | |
1118 | int i; | |
1119 | ||
1120 | pdev = adapter->pdev; | |
1121 | ||
1122 | /* | |
1123 | * Setup the mailbox | |
1124 | * Allocate the common 16-byte aligned memory for the handshake | |
1125 | * mailbox. | |
1126 | */ | |
1127 | raid_dev->una_mbox64 = pci_alloc_consistent(adapter->pdev, | |
1128 | sizeof(mbox64_t), &raid_dev->una_mbox64_dma); | |
1129 | ||
1130 | if (!raid_dev->una_mbox64) { | |
1131 | con_log(CL_ANN, (KERN_WARNING | |
1132 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
1133 | __LINE__)); | |
1134 | return -1; | |
1135 | } | |
1136 | memset(raid_dev->una_mbox64, 0, sizeof(mbox64_t)); | |
1137 | ||
1138 | /* | |
1139 | * Align the mailbox at 16-byte boundary | |
1140 | */ | |
1141 | raid_dev->mbox = &raid_dev->una_mbox64->mbox32; | |
1142 | ||
1143 | raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & | |
1144 | (~0UL ^ 0xFUL)); | |
1145 | ||
1146 | raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); | |
1147 | ||
1148 | align = ((void *)raid_dev->mbox - | |
1149 | ((void *)&raid_dev->una_mbox64->mbox32)); | |
1150 | ||
1151 | raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + | |
1152 | align; | |
1153 | ||
1154 | // Allocate memory for commands issued internally | |
1155 | adapter->ibuf = pci_alloc_consistent(pdev, MBOX_IBUF_SIZE, | |
1156 | &adapter->ibuf_dma_h); | |
1157 | if (!adapter->ibuf) { | |
1158 | ||
1159 | con_log(CL_ANN, (KERN_WARNING | |
1160 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
1161 | __LINE__)); | |
1162 | ||
1163 | goto out_free_common_mbox; | |
1164 | } | |
1165 | memset(adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
1166 | ||
1167 | // Allocate memory for our SCSI Command Blocks and their associated | |
1168 | // memory | |
1169 | ||
1170 | /* | |
1171 | * Allocate memory for the base list of scb. Later allocate memory for | |
1172 | * CCBs and embedded components of each CCB and point the pointers in | |
1173 | * scb to the allocated components | |
1174 | * NOTE: The code to allocate SCB will be duplicated in all the LLD | |
1175 | * since the calling routine does not yet know the number of available | |
1176 | * commands. | |
1177 | */ | |
1178 | adapter->kscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_SCSI_CMDS, | |
1179 | GFP_KERNEL); | |
1180 | ||
1181 | if (adapter->kscb_list == NULL) { | |
1182 | con_log(CL_ANN, (KERN_WARNING | |
1183 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
1184 | __LINE__)); | |
1185 | goto out_free_ibuf; | |
1186 | } | |
1187 | memset(adapter->kscb_list, 0, sizeof(scb_t) * MBOX_MAX_SCSI_CMDS); | |
1188 | ||
1189 | // memory allocation for our command packets | |
1190 | if (megaraid_mbox_setup_dma_pools(adapter) != 0) { | |
1191 | con_log(CL_ANN, (KERN_WARNING | |
1192 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
1193 | __LINE__)); | |
1194 | goto out_free_scb_list; | |
1195 | } | |
1196 | ||
1197 | // Adjust the scb pointers and link in the free pool | |
1198 | epthru_pci_blk = raid_dev->epthru_pool; | |
1199 | sg_pci_blk = raid_dev->sg_pool; | |
1200 | mbox_pci_blk = raid_dev->mbox_pool; | |
1201 | ||
1202 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1203 | scb = adapter->kscb_list + i; | |
1204 | ccb = raid_dev->ccb_list + i; | |
1205 | ||
1206 | ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); | |
1207 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
1208 | ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); | |
1209 | ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; | |
1210 | ||
1211 | // make sure the mailbox is aligned properly | |
1212 | if (ccb->mbox_dma_h & 0x0F) { | |
1213 | con_log(CL_ANN, (KERN_CRIT | |
1214 | "megaraid mbox: not aligned on 16-bytes\n")); | |
1215 | ||
1216 | goto out_teardown_dma_pools; | |
1217 | } | |
1218 | ||
1219 | ccb->epthru = (mraid_epassthru_t *) | |
1220 | epthru_pci_blk[i].vaddr; | |
1221 | ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; | |
1222 | ccb->pthru = (mraid_passthru_t *)ccb->epthru; | |
1223 | ccb->pthru_dma_h = ccb->epthru_dma_h; | |
1224 | ||
1225 | ||
1226 | ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; | |
1227 | ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; | |
1228 | ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; | |
1229 | ||
1230 | scb->ccb = (caddr_t)ccb; | |
1231 | scb->gp = 0; | |
1232 | ||
1233 | scb->sno = i; // command index | |
1234 | ||
1235 | scb->scp = NULL; | |
1236 | scb->state = SCB_FREE; | |
1237 | scb->dma_direction = PCI_DMA_NONE; | |
1238 | scb->dma_type = MRAID_DMA_NONE; | |
1239 | scb->dev_channel = -1; | |
1240 | scb->dev_target = -1; | |
1241 | ||
1242 | // put scb in the free pool | |
1243 | list_add_tail(&scb->list, &adapter->kscb_pool); | |
1244 | } | |
1245 | ||
1246 | return 0; | |
1247 | ||
1248 | out_teardown_dma_pools: | |
1249 | megaraid_mbox_teardown_dma_pools(adapter); | |
1250 | out_free_scb_list: | |
1251 | kfree(adapter->kscb_list); | |
1252 | out_free_ibuf: | |
1253 | pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, | |
1254 | adapter->ibuf_dma_h); | |
1255 | out_free_common_mbox: | |
1256 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1257 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1258 | ||
1259 | return -1; | |
1260 | } | |
1261 | ||
1262 | ||
1263 | /** | |
1264 | * megaraid_free_cmd_packets - free memory | |
1265 | * @param adapter : soft state of the raid controller | |
1266 | * | |
1267 | * Release memory resources allocated for commands | |
1268 | */ | |
1269 | static void | |
1270 | megaraid_free_cmd_packets(adapter_t *adapter) | |
1271 | { | |
1272 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1273 | ||
1274 | megaraid_mbox_teardown_dma_pools(adapter); | |
1275 | ||
1276 | kfree(adapter->kscb_list); | |
1277 | ||
1278 | pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE, | |
1279 | (void *)adapter->ibuf, adapter->ibuf_dma_h); | |
1280 | ||
1281 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1282 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1283 | return; | |
1284 | } | |
1285 | ||
1286 | ||
1287 | /** | |
1288 | * megaraid_mbox_setup_dma_pools - setup dma pool for command packets | |
1289 | * @param adapter : HBA soft state | |
1290 | * | |
1291 | * setup the dma pools for mailbox, passthru and extended passthru structures, | |
1292 | * and scatter-gather lists | |
1293 | */ | |
1294 | static int | |
1295 | megaraid_mbox_setup_dma_pools(adapter_t *adapter) | |
1296 | { | |
1297 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1298 | struct mraid_pci_blk *epthru_pci_blk; | |
1299 | struct mraid_pci_blk *sg_pci_blk; | |
1300 | struct mraid_pci_blk *mbox_pci_blk; | |
1301 | int i; | |
1302 | ||
1303 | ||
1304 | ||
1305 | // Allocate memory for 16-bytes aligned mailboxes | |
1306 | raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool", | |
1307 | adapter->pdev, | |
1308 | sizeof(mbox64_t) + 16, | |
1309 | 16, 0); | |
1310 | ||
1311 | if (raid_dev->mbox_pool_handle == NULL) { | |
1312 | goto fail_setup_dma_pool; | |
1313 | } | |
1314 | ||
1315 | mbox_pci_blk = raid_dev->mbox_pool; | |
1316 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1317 | mbox_pci_blk[i].vaddr = pci_pool_alloc( | |
1318 | raid_dev->mbox_pool_handle, | |
1319 | GFP_KERNEL, | |
1320 | &mbox_pci_blk[i].dma_addr); | |
1321 | if (!mbox_pci_blk[i].vaddr) { | |
1322 | goto fail_setup_dma_pool; | |
1323 | } | |
1324 | } | |
1325 | ||
1326 | /* | |
1327 | * Allocate memory for each embedded passthru strucuture pointer | |
1328 | * Request for a 128 bytes aligned structure for each passthru command | |
1329 | * structure | |
1330 | * Since passthru and extended passthru commands are exclusive, they | |
1331 | * share common memory pool. Passthru structures piggyback on memory | |
1332 | * allocted to extended passthru since passthru is smaller of the two | |
1333 | */ | |
1334 | raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru", | |
1335 | adapter->pdev, sizeof(mraid_epassthru_t), 128, 0); | |
1336 | ||
1337 | if (raid_dev->epthru_pool_handle == NULL) { | |
1338 | goto fail_setup_dma_pool; | |
1339 | } | |
1340 | ||
1341 | epthru_pci_blk = raid_dev->epthru_pool; | |
1342 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1343 | epthru_pci_blk[i].vaddr = pci_pool_alloc( | |
1344 | raid_dev->epthru_pool_handle, | |
1345 | GFP_KERNEL, | |
1346 | &epthru_pci_blk[i].dma_addr); | |
1347 | if (!epthru_pci_blk[i].vaddr) { | |
1348 | goto fail_setup_dma_pool; | |
1349 | } | |
1350 | } | |
1351 | ||
1352 | ||
1353 | // Allocate memory for each scatter-gather list. Request for 512 bytes | |
1354 | // alignment for each sg list | |
1355 | raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg", | |
1356 | adapter->pdev, | |
1357 | sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, | |
1358 | 512, 0); | |
1359 | ||
1360 | if (raid_dev->sg_pool_handle == NULL) { | |
1361 | goto fail_setup_dma_pool; | |
1362 | } | |
1363 | ||
1364 | sg_pci_blk = raid_dev->sg_pool; | |
1365 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1366 | sg_pci_blk[i].vaddr = pci_pool_alloc( | |
1367 | raid_dev->sg_pool_handle, | |
1368 | GFP_KERNEL, | |
1369 | &sg_pci_blk[i].dma_addr); | |
1370 | if (!sg_pci_blk[i].vaddr) { | |
1371 | goto fail_setup_dma_pool; | |
1372 | } | |
1373 | } | |
1374 | ||
1375 | return 0; | |
1376 | ||
1377 | fail_setup_dma_pool: | |
1378 | megaraid_mbox_teardown_dma_pools(adapter); | |
1379 | return -1; | |
1380 | } | |
1381 | ||
1382 | ||
1383 | /** | |
1384 | * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets | |
1385 | * @param adapter : HBA soft state | |
1386 | * | |
1387 | * teardown the dma pool for mailbox, passthru and extended passthru | |
1388 | * structures, and scatter-gather lists | |
1389 | */ | |
1390 | static void | |
1391 | megaraid_mbox_teardown_dma_pools(adapter_t *adapter) | |
1392 | { | |
1393 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1394 | struct mraid_pci_blk *epthru_pci_blk; | |
1395 | struct mraid_pci_blk *sg_pci_blk; | |
1396 | struct mraid_pci_blk *mbox_pci_blk; | |
1397 | int i; | |
1398 | ||
1399 | ||
1400 | sg_pci_blk = raid_dev->sg_pool; | |
1401 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { | |
1402 | pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, | |
1403 | sg_pci_blk[i].dma_addr); | |
1404 | } | |
1405 | if (raid_dev->sg_pool_handle) | |
1406 | pci_pool_destroy(raid_dev->sg_pool_handle); | |
1407 | ||
1408 | ||
1409 | epthru_pci_blk = raid_dev->epthru_pool; | |
1410 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { | |
1411 | pci_pool_free(raid_dev->epthru_pool_handle, | |
1412 | epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); | |
1413 | } | |
1414 | if (raid_dev->epthru_pool_handle) | |
1415 | pci_pool_destroy(raid_dev->epthru_pool_handle); | |
1416 | ||
1417 | ||
1418 | mbox_pci_blk = raid_dev->mbox_pool; | |
1419 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { | |
1420 | pci_pool_free(raid_dev->mbox_pool_handle, | |
1421 | mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); | |
1422 | } | |
1423 | if (raid_dev->mbox_pool_handle) | |
1424 | pci_pool_destroy(raid_dev->mbox_pool_handle); | |
1425 | ||
1426 | return; | |
1427 | } | |
1428 | ||
1429 | ||
1430 | /** | |
1431 | * megaraid_alloc_scb - detach and return a scb from the free list | |
1432 | * @adapter : controller's soft state | |
1433 | * | |
1434 | * return the scb from the head of the free list. NULL if there are none | |
1435 | * available | |
1436 | **/ | |
1437 | static inline scb_t * | |
1438 | megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) | |
1439 | { | |
1440 | struct list_head *head = &adapter->kscb_pool; | |
1441 | scb_t *scb = NULL; | |
1442 | unsigned long flags; | |
1443 | ||
1444 | // detach scb from free pool | |
1445 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1446 | ||
1447 | if (list_empty(head)) { | |
1448 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1449 | return NULL; | |
1450 | } | |
1451 | ||
1452 | scb = list_entry(head->next, scb_t, list); | |
1453 | list_del_init(&scb->list); | |
1454 | ||
1455 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1456 | ||
1457 | scb->state = SCB_ACTIVE; | |
1458 | scb->scp = scp; | |
1459 | scb->dma_type = MRAID_DMA_NONE; | |
1460 | ||
1461 | return scb; | |
1462 | } | |
1463 | ||
1464 | ||
1465 | /** | |
1466 | * megaraid_dealloc_scb - return the scb to the free pool | |
1467 | * @adapter : controller's soft state | |
1468 | * @scb : scb to be freed | |
1469 | * | |
1470 | * return the scb back to the free list of scbs. The caller must 'flush' the | |
1471 | * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. | |
1472 | * NOTE NOTE: Make sure the scb is not on any list before calling this | |
1473 | * routine. | |
1474 | **/ | |
1475 | static inline void | |
1476 | megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) | |
1477 | { | |
1478 | unsigned long flags; | |
1479 | ||
1480 | // put scb in the free pool | |
1481 | scb->state = SCB_FREE; | |
1482 | scb->scp = NULL; | |
1483 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1484 | ||
1485 | list_add(&scb->list, &adapter->kscb_pool); | |
1486 | ||
1487 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1488 | ||
1489 | return; | |
1490 | } | |
1491 | ||
1492 | ||
1493 | /** | |
1494 | * megaraid_mbox_mksgl - make the scatter-gather list | |
1495 | * @adapter - controller's soft state | |
1496 | * @scb - scsi control block | |
1497 | * | |
1498 | * prepare the scatter-gather list | |
1499 | */ | |
1500 | static inline int | |
1501 | megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) | |
1502 | { | |
1503 | struct scatterlist *sgl; | |
1504 | mbox_ccb_t *ccb; | |
1505 | struct page *page; | |
1506 | unsigned long offset; | |
1507 | struct scsi_cmnd *scp; | |
1508 | int sgcnt; | |
1509 | int i; | |
1510 | ||
1511 | ||
1512 | scp = scb->scp; | |
1513 | ccb = (mbox_ccb_t *)scb->ccb; | |
1514 | ||
1515 | // no mapping required if no data to be transferred | |
1516 | if (!scp->request_buffer || !scp->request_bufflen) | |
1517 | return 0; | |
1518 | ||
1519 | if (!scp->use_sg) { /* scatter-gather list not used */ | |
1520 | ||
1521 | page = virt_to_page(scp->request_buffer); | |
1522 | ||
1523 | offset = ((unsigned long)scp->request_buffer & ~PAGE_MASK); | |
1524 | ||
1525 | ccb->buf_dma_h = pci_map_page(adapter->pdev, page, offset, | |
1526 | scp->request_bufflen, | |
1527 | scb->dma_direction); | |
1528 | scb->dma_type = MRAID_DMA_WBUF; | |
1529 | ||
1530 | /* | |
1531 | * We need to handle special 64-bit commands that need a | |
1532 | * minimum of 1 SG | |
1533 | */ | |
1534 | sgcnt = 1; | |
1535 | ccb->sgl64[0].address = ccb->buf_dma_h; | |
1536 | ccb->sgl64[0].length = scp->request_bufflen; | |
1537 | ||
1538 | return sgcnt; | |
1539 | } | |
1540 | ||
1541 | sgl = (struct scatterlist *)scp->request_buffer; | |
1542 | ||
1543 | // The number of sg elements returned must not exceed our limit | |
1544 | sgcnt = pci_map_sg(adapter->pdev, sgl, scp->use_sg, | |
1545 | scb->dma_direction); | |
1546 | ||
1547 | if (sgcnt > adapter->sglen) { | |
1548 | con_log(CL_ANN, (KERN_CRIT | |
1549 | "megaraid critical: too many sg elements:%d\n", | |
1550 | sgcnt)); | |
1551 | BUG(); | |
1552 | } | |
1553 | ||
1554 | scb->dma_type = MRAID_DMA_WSG; | |
1555 | ||
1556 | for (i = 0; i < sgcnt; i++, sgl++) { | |
1557 | ccb->sgl64[i].address = sg_dma_address(sgl); | |
1558 | ccb->sgl64[i].length = sg_dma_len(sgl); | |
1559 | } | |
1560 | ||
1561 | // Return count of SG nodes | |
1562 | return sgcnt; | |
1563 | } | |
1564 | ||
1565 | ||
1566 | /** | |
1567 | * mbox_post_cmd - issue a mailbox command | |
1568 | * @adapter - controller's soft state | |
1569 | * @scb - command to be issued | |
1570 | * | |
1571 | * post the command to the controller if mailbox is availble. | |
1572 | */ | |
1573 | static inline int | |
1574 | mbox_post_cmd(adapter_t *adapter, scb_t *scb) | |
1575 | { | |
1576 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1577 | mbox64_t *mbox64; | |
1578 | mbox_t *mbox; | |
1579 | mbox_ccb_t *ccb; | |
1580 | unsigned long flags; | |
1581 | unsigned int i = 0; | |
1582 | ||
1583 | ||
1584 | ccb = (mbox_ccb_t *)scb->ccb; | |
1585 | mbox = raid_dev->mbox; | |
1586 | mbox64 = raid_dev->mbox64; | |
1587 | ||
1588 | /* | |
1589 | * Check for busy mailbox. If it is, return failure - the caller | |
1590 | * should retry later. | |
1591 | */ | |
1592 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
1593 | ||
1594 | if (unlikely(mbox->busy)) { | |
1595 | do { | |
1596 | udelay(1); | |
1597 | i++; | |
1598 | rmb(); | |
1599 | } while(mbox->busy && (i < max_mbox_busy_wait)); | |
1600 | ||
1601 | if (mbox->busy) { | |
1602 | ||
1603 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1604 | ||
1605 | return -1; | |
1606 | } | |
1607 | } | |
1608 | ||
1609 | ||
1610 | // Copy this command's mailbox data into "adapter's" mailbox | |
1611 | memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); | |
1612 | mbox->cmdid = scb->sno; | |
1613 | ||
1614 | adapter->outstanding_cmds++; | |
1615 | ||
1616 | if (scb->dma_direction == PCI_DMA_TODEVICE) { | |
1617 | if (!scb->scp->use_sg) { // sg list not used | |
1618 | pci_dma_sync_single_for_device(adapter->pdev, | |
1619 | ccb->buf_dma_h, | |
1620 | scb->scp->request_bufflen, | |
1621 | PCI_DMA_TODEVICE); | |
1622 | } | |
1623 | else { | |
1624 | pci_dma_sync_sg_for_device(adapter->pdev, | |
1625 | scb->scp->request_buffer, | |
1626 | scb->scp->use_sg, PCI_DMA_TODEVICE); | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | mbox->busy = 1; // Set busy | |
1631 | mbox->poll = 0; | |
1632 | mbox->ack = 0; | |
1633 | wmb(); | |
1634 | ||
1635 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
1636 | ||
1637 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1638 | ||
1639 | return 0; | |
1640 | } | |
1641 | ||
1642 | ||
1643 | /** | |
1644 | * megaraid_queue_command - generic queue entry point for all LLDs | |
1645 | * @scp : pointer to the scsi command to be executed | |
1646 | * @done : callback routine to be called after the cmd has be completed | |
1647 | * | |
1648 | * Queue entry point for mailbox based controllers. | |
1649 | */ | |
1650 | static int | |
1651 | megaraid_queue_command(struct scsi_cmnd *scp, void (* done)(struct scsi_cmnd *)) | |
1652 | { | |
1653 | adapter_t *adapter; | |
1654 | scb_t *scb; | |
1655 | int if_busy; | |
1656 | ||
1657 | adapter = SCP2ADAPTER(scp); | |
1658 | scp->scsi_done = done; | |
1659 | scp->result = 0; | |
1660 | ||
1661 | assert_spin_locked(adapter->host_lock); | |
1662 | ||
1663 | spin_unlock(adapter->host_lock); | |
1664 | ||
1665 | /* | |
1666 | * Allocate and build a SCB request | |
1667 | * if_busy flag will be set if megaraid_mbox_build_cmd() command could | |
1668 | * not allocate scb. We will return non-zero status in that case. | |
1669 | * NOTE: scb can be null even though certain commands completed | |
1670 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would | |
1671 | * return 0 in that case, and we would do the callback right away. | |
1672 | */ | |
1673 | if_busy = 0; | |
1674 | scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); | |
1675 | ||
1676 | if (scb) { | |
1677 | megaraid_mbox_runpendq(adapter, scb); | |
1678 | } | |
1679 | ||
1680 | spin_lock(adapter->host_lock); | |
1681 | ||
1682 | if (!scb) { // command already completed | |
1683 | done(scp); | |
1684 | return 0; | |
1685 | } | |
1686 | ||
1687 | return if_busy; | |
1688 | } | |
1689 | ||
1690 | ||
1691 | /** | |
1692 | * megaraid_mbox_build_cmd - transform the mid-layer scsi command to megaraid | |
1693 | * firmware lingua | |
1694 | * @adapter - controller's soft state | |
1695 | * @scp - mid-layer scsi command pointer | |
1696 | * @busy - set if request could not be completed because of lack of | |
1697 | * resources | |
1698 | * | |
1699 | * convert the command issued by mid-layer to format understood by megaraid | |
1700 | * firmware. We also complete certain command without sending them to firmware | |
1701 | */ | |
1702 | static scb_t * | |
1703 | megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) | |
1704 | { | |
1705 | mraid_device_t *rdev = ADAP2RAIDDEV(adapter); | |
1706 | int channel; | |
1707 | int target; | |
1708 | int islogical; | |
1709 | mbox_ccb_t *ccb; | |
1710 | mraid_passthru_t *pthru; | |
1711 | mbox64_t *mbox64; | |
1712 | mbox_t *mbox; | |
1713 | scb_t *scb; | |
1714 | char skip[] = "skipping"; | |
1715 | char scan[] = "scanning"; | |
1716 | char *ss; | |
1717 | ||
1718 | ||
1719 | /* | |
1720 | * Get the appropriate device map for the device this command is | |
1721 | * intended for | |
1722 | */ | |
1723 | MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); | |
1724 | ||
1725 | /* | |
1726 | * Logical drive commands | |
1727 | */ | |
1728 | if (islogical) { | |
1729 | switch (scp->cmnd[0]) { | |
1730 | case TEST_UNIT_READY: | |
1731 | /* | |
1732 | * Do we support clustering and is the support enabled | |
1733 | * If no, return success always | |
1734 | */ | |
1735 | if (!adapter->ha) { | |
1736 | scp->result = (DID_OK << 16); | |
1737 | return NULL; | |
1738 | } | |
1739 | ||
1740 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1741 | scp->result = (DID_ERROR << 16); | |
1742 | *busy = 1; | |
1743 | return NULL; | |
1744 | } | |
1745 | ||
1746 | scb->dma_direction = scp->sc_data_direction; | |
1747 | scb->dev_channel = 0xFF; | |
1748 | scb->dev_target = target; | |
1749 | ccb = (mbox_ccb_t *)scb->ccb; | |
1750 | ||
1751 | /* | |
1752 | * The command id will be provided by the command | |
1753 | * issuance routine | |
1754 | */ | |
1755 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1756 | ccb->raw_mbox[2] = RESERVATION_STATUS; | |
1757 | ccb->raw_mbox[3] = target; | |
1758 | ||
1759 | return scb; | |
1760 | ||
1761 | case MODE_SENSE: | |
1762 | if (scp->use_sg) { | |
1763 | struct scatterlist *sgl; | |
1764 | caddr_t vaddr; | |
1765 | ||
1766 | sgl = (struct scatterlist *)scp->request_buffer; | |
1767 | if (sgl->page) { | |
1768 | vaddr = (caddr_t) | |
1769 | (page_address((&sgl[0])->page) | |
1770 | + (&sgl[0])->offset); | |
1771 | ||
1772 | memset(vaddr, 0, scp->cmnd[4]); | |
1773 | } | |
1774 | else { | |
1775 | con_log(CL_ANN, (KERN_WARNING | |
1776 | "megaraid mailbox: invalid sg:%d\n", | |
1777 | __LINE__)); | |
1778 | } | |
1779 | } | |
1780 | else { | |
1781 | memset(scp->request_buffer, 0, scp->cmnd[4]); | |
1782 | } | |
1783 | scp->result = (DID_OK << 16); | |
1784 | return NULL; | |
1785 | ||
1786 | case INQUIRY: | |
1787 | /* | |
1788 | * Display the channel scan for logical drives | |
1789 | * Do not display scan for a channel if already done. | |
1790 | */ | |
1791 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1792 | ||
1793 | con_log(CL_ANN, (KERN_INFO | |
1794 | "scsi[%d]: scanning scsi channel %d", | |
1795 | adapter->host->host_no, | |
1796 | SCP2CHANNEL(scp))); | |
1797 | ||
1798 | con_log(CL_ANN, ( | |
1799 | " [virtual] for logical drives\n")); | |
1800 | ||
1801 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1802 | } | |
1803 | ||
1804 | /* Fall through */ | |
1805 | ||
1806 | case READ_CAPACITY: | |
1807 | /* | |
1808 | * Do not allow LUN > 0 for logical drives and | |
1809 | * requests for more than 40 logical drives | |
1810 | */ | |
1811 | if (SCP2LUN(scp)) { | |
1812 | scp->result = (DID_BAD_TARGET << 16); | |
1813 | return NULL; | |
1814 | } | |
1815 | if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { | |
1816 | scp->result = (DID_BAD_TARGET << 16); | |
1817 | return NULL; | |
1818 | } | |
1819 | ||
1820 | ||
1821 | /* Allocate a SCB and initialize passthru */ | |
1822 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1823 | scp->result = (DID_ERROR << 16); | |
1824 | *busy = 1; | |
1825 | return NULL; | |
1826 | } | |
1827 | ||
1828 | ccb = (mbox_ccb_t *)scb->ccb; | |
1829 | scb->dev_channel = 0xFF; | |
1830 | scb->dev_target = target; | |
1831 | pthru = ccb->pthru; | |
1832 | mbox = ccb->mbox; | |
1833 | mbox64 = ccb->mbox64; | |
1834 | ||
1835 | pthru->timeout = 0; | |
1836 | pthru->ars = 1; | |
1837 | pthru->reqsenselen = 14; | |
1838 | pthru->islogical = 1; | |
1839 | pthru->logdrv = target; | |
1840 | pthru->cdblen = scp->cmd_len; | |
1841 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1842 | ||
1843 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1844 | scb->dma_direction = scp->sc_data_direction; | |
1845 | ||
1846 | pthru->dataxferlen = scp->request_bufflen; | |
1847 | pthru->dataxferaddr = ccb->sgl_dma_h; | |
1848 | pthru->numsge = megaraid_mbox_mksgl(adapter, | |
1849 | scb); | |
1850 | ||
1851 | mbox->xferaddr = 0xFFFFFFFF; | |
1852 | mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; | |
1853 | mbox64->xferaddr_hi = 0; | |
1854 | ||
1855 | return scb; | |
1856 | ||
1857 | case READ_6: | |
1858 | case WRITE_6: | |
1859 | case READ_10: | |
1860 | case WRITE_10: | |
1861 | case READ_12: | |
1862 | case WRITE_12: | |
1863 | ||
1864 | /* | |
1865 | * Allocate a SCB and initialize mailbox | |
1866 | */ | |
1867 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1868 | scp->result = (DID_ERROR << 16); | |
1869 | *busy = 1; | |
1870 | return NULL; | |
1871 | } | |
1872 | ccb = (mbox_ccb_t *)scb->ccb; | |
1873 | scb->dev_channel = 0xFF; | |
1874 | scb->dev_target = target; | |
1875 | mbox = ccb->mbox; | |
1876 | mbox64 = ccb->mbox64; | |
1877 | mbox->logdrv = target; | |
1878 | ||
1879 | /* | |
1880 | * A little HACK: 2nd bit is zero for all scsi read | |
1881 | * commands and is set for all scsi write commands | |
1882 | */ | |
1883 | mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: | |
1884 | MBOXCMD_LREAD64 ; | |
1885 | ||
1886 | /* | |
1887 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
1888 | */ | |
1889 | if (scp->cmd_len == 6) { | |
1890 | mbox->numsectors = (uint32_t)scp->cmnd[4]; | |
1891 | mbox->lba = | |
1892 | ((uint32_t)scp->cmnd[1] << 16) | | |
1893 | ((uint32_t)scp->cmnd[2] << 8) | | |
1894 | (uint32_t)scp->cmnd[3]; | |
1895 | ||
1896 | mbox->lba &= 0x1FFFFF; | |
1897 | } | |
1898 | ||
1899 | /* | |
1900 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
1901 | */ | |
1902 | else if (scp->cmd_len == 10) { | |
1903 | mbox->numsectors = | |
1904 | (uint32_t)scp->cmnd[8] | | |
1905 | ((uint32_t)scp->cmnd[7] << 8); | |
1906 | mbox->lba = | |
1907 | ((uint32_t)scp->cmnd[2] << 24) | | |
1908 | ((uint32_t)scp->cmnd[3] << 16) | | |
1909 | ((uint32_t)scp->cmnd[4] << 8) | | |
1910 | (uint32_t)scp->cmnd[5]; | |
1911 | } | |
1912 | ||
1913 | /* | |
1914 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
1915 | */ | |
1916 | else if (scp->cmd_len == 12) { | |
1917 | mbox->lba = | |
1918 | ((uint32_t)scp->cmnd[2] << 24) | | |
1919 | ((uint32_t)scp->cmnd[3] << 16) | | |
1920 | ((uint32_t)scp->cmnd[4] << 8) | | |
1921 | (uint32_t)scp->cmnd[5]; | |
1922 | ||
1923 | mbox->numsectors = | |
1924 | ((uint32_t)scp->cmnd[6] << 24) | | |
1925 | ((uint32_t)scp->cmnd[7] << 16) | | |
1926 | ((uint32_t)scp->cmnd[8] << 8) | | |
1927 | (uint32_t)scp->cmnd[9]; | |
1928 | } | |
1929 | else { | |
1930 | con_log(CL_ANN, (KERN_WARNING | |
1931 | "megaraid: unsupported CDB length\n")); | |
1932 | ||
1933 | megaraid_dealloc_scb(adapter, scb); | |
1934 | ||
1935 | scp->result = (DID_ERROR << 16); | |
1936 | return NULL; | |
1937 | } | |
1938 | ||
1939 | scb->dma_direction = scp->sc_data_direction; | |
1940 | ||
1941 | // Calculate Scatter-Gather info | |
1942 | mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; | |
1943 | mbox->numsge = megaraid_mbox_mksgl(adapter, | |
1944 | scb); | |
1945 | mbox->xferaddr = 0xFFFFFFFF; | |
1946 | mbox64->xferaddr_hi = 0; | |
1947 | ||
1948 | return scb; | |
1949 | ||
1950 | case RESERVE: | |
1951 | case RELEASE: | |
1952 | /* | |
1953 | * Do we support clustering and is the support enabled | |
1954 | */ | |
1955 | if (!adapter->ha) { | |
1956 | scp->result = (DID_BAD_TARGET << 16); | |
1957 | return NULL; | |
1958 | } | |
1959 | ||
1960 | /* | |
1961 | * Allocate a SCB and initialize mailbox | |
1962 | */ | |
1963 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1964 | scp->result = (DID_ERROR << 16); | |
1965 | *busy = 1; | |
1966 | return NULL; | |
1967 | } | |
1968 | ||
1969 | ccb = (mbox_ccb_t *)scb->ccb; | |
1970 | scb->dev_channel = 0xFF; | |
1971 | scb->dev_target = target; | |
1972 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1973 | ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? | |
1974 | RESERVE_LD : RELEASE_LD; | |
1975 | ||
1976 | ccb->raw_mbox[3] = target; | |
1977 | scb->dma_direction = scp->sc_data_direction; | |
1978 | ||
1979 | return scb; | |
1980 | ||
1981 | default: | |
1982 | scp->result = (DID_BAD_TARGET << 16); | |
1983 | return NULL; | |
1984 | } | |
1985 | } | |
1986 | else { // Passthru device commands | |
1987 | ||
1988 | // Do not allow access to target id > 15 or LUN > 7 | |
1989 | if (target > 15 || SCP2LUN(scp) > 7) { | |
1990 | scp->result = (DID_BAD_TARGET << 16); | |
1991 | return NULL; | |
1992 | } | |
1993 | ||
1994 | // if fast load option was set and scan for last device is | |
1995 | // over, reset the fast_load flag so that during a possible | |
1996 | // next scan, devices can be made available | |
1997 | if (rdev->fast_load && (target == 15) && | |
1998 | (SCP2CHANNEL(scp) == adapter->max_channel -1)) { | |
1999 | ||
2000 | con_log(CL_ANN, (KERN_INFO | |
2001 | "megaraid[%d]: physical device scan re-enabled\n", | |
2002 | adapter->host->host_no)); | |
2003 | rdev->fast_load = 0; | |
2004 | } | |
2005 | ||
2006 | /* | |
2007 | * Display the channel scan for physical devices | |
2008 | */ | |
2009 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
2010 | ||
2011 | ss = rdev->fast_load ? skip : scan; | |
2012 | ||
2013 | con_log(CL_ANN, (KERN_INFO | |
2014 | "scsi[%d]: %s scsi channel %d [Phy %d]", | |
2015 | adapter->host->host_no, ss, SCP2CHANNEL(scp), | |
2016 | channel)); | |
2017 | ||
2018 | con_log(CL_ANN, ( | |
2019 | " for non-raid devices\n")); | |
2020 | ||
2021 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
2022 | } | |
2023 | ||
2024 | // disable channel sweep if fast load option given | |
2025 | if (rdev->fast_load) { | |
2026 | scp->result = (DID_BAD_TARGET << 16); | |
2027 | return NULL; | |
2028 | } | |
2029 | ||
2030 | // Allocate a SCB and initialize passthru | |
2031 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
2032 | scp->result = (DID_ERROR << 16); | |
2033 | *busy = 1; | |
2034 | return NULL; | |
2035 | } | |
2036 | ||
2037 | ccb = (mbox_ccb_t *)scb->ccb; | |
2038 | scb->dev_channel = channel; | |
2039 | scb->dev_target = target; | |
2040 | scb->dma_direction = scp->sc_data_direction; | |
2041 | mbox = ccb->mbox; | |
2042 | mbox64 = ccb->mbox64; | |
2043 | ||
2044 | // Does this firmware support extended CDBs | |
2045 | if (adapter->max_cdb_sz == 16) { | |
2046 | mbox->cmd = MBOXCMD_EXTPTHRU; | |
2047 | ||
2048 | megaraid_mbox_prepare_epthru(adapter, scb, scp); | |
2049 | ||
2050 | mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; | |
2051 | mbox64->xferaddr_hi = 0; | |
2052 | mbox->xferaddr = 0xFFFFFFFF; | |
2053 | } | |
2054 | else { | |
2055 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
2056 | ||
2057 | megaraid_mbox_prepare_pthru(adapter, scb, scp); | |
2058 | ||
2059 | mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; | |
2060 | mbox64->xferaddr_hi = 0; | |
2061 | mbox->xferaddr = 0xFFFFFFFF; | |
2062 | } | |
2063 | return scb; | |
2064 | } | |
2065 | ||
2066 | // NOT REACHED | |
2067 | } | |
2068 | ||
2069 | ||
2070 | /** | |
2071 | * megaraid_mbox_runpendq - execute commands queued in the pending queue | |
2072 | * @adapter : controller's soft state | |
2073 | * @scb : SCB to be queued in the pending list | |
2074 | * | |
2075 | * scan the pending list for commands which are not yet issued and try to | |
2076 | * post to the controller. The SCB can be a null pointer, which would indicate | |
2077 | * no SCB to be queue, just try to execute the ones in the pending list. | |
2078 | * | |
2079 | * NOTE: We do not actually traverse the pending list. The SCBs are plucked | |
2080 | * out from the head of the pending list. If it is successfully issued, the | |
2081 | * next SCB is at the head now. | |
2082 | */ | |
2083 | static void | |
2084 | megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) | |
2085 | { | |
2086 | scb_t *scb; | |
2087 | unsigned long flags; | |
2088 | ||
2089 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2090 | ||
2091 | if (scb_q) { | |
2092 | scb_q->state = SCB_PENDQ; | |
2093 | list_add_tail(&scb_q->list, &adapter->pend_list); | |
2094 | } | |
2095 | ||
2096 | // if the adapter in not in quiescent mode, post the commands to FW | |
2097 | if (adapter->quiescent) { | |
2098 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2099 | return; | |
2100 | } | |
2101 | ||
2102 | while (!list_empty(&adapter->pend_list)) { | |
2103 | ||
2104 | assert_spin_locked(PENDING_LIST_LOCK(adapter)); | |
2105 | ||
2106 | scb = list_entry(adapter->pend_list.next, scb_t, list); | |
2107 | ||
2108 | // remove the scb from the pending list and try to | |
2109 | // issue. If we are unable to issue it, put back in | |
2110 | // the pending list and return | |
2111 | ||
2112 | list_del_init(&scb->list); | |
2113 | ||
2114 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2115 | ||
2116 | // if mailbox was busy, return SCB back to pending | |
2117 | // list. Make sure to add at the head, since that's | |
2118 | // where it would have been removed from | |
2119 | ||
2120 | scb->state = SCB_ISSUED; | |
2121 | ||
2122 | if (mbox_post_cmd(adapter, scb) != 0) { | |
2123 | ||
2124 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2125 | ||
2126 | scb->state = SCB_PENDQ; | |
2127 | ||
2128 | list_add(&scb->list, &adapter->pend_list); | |
2129 | ||
2130 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
2131 | flags); | |
2132 | ||
2133 | return; | |
2134 | } | |
2135 | ||
2136 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2137 | } | |
2138 | ||
2139 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2140 | ||
2141 | ||
2142 | return; | |
2143 | } | |
2144 | ||
2145 | ||
2146 | /** | |
2147 | * megaraid_mbox_prepare_pthru - prepare a command for physical devices | |
2148 | * @adapter - pointer to controller's soft state | |
2149 | * @scb - scsi control block | |
2150 | * @scp - scsi command from the mid-layer | |
2151 | * | |
2152 | * prepare a command for the scsi physical devices | |
2153 | */ | |
2154 | static void | |
2155 | megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, | |
2156 | struct scsi_cmnd *scp) | |
2157 | { | |
2158 | mbox_ccb_t *ccb; | |
2159 | mraid_passthru_t *pthru; | |
2160 | uint8_t channel; | |
2161 | uint8_t target; | |
2162 | ||
2163 | ccb = (mbox_ccb_t *)scb->ccb; | |
2164 | pthru = ccb->pthru; | |
2165 | channel = scb->dev_channel; | |
2166 | target = scb->dev_target; | |
2167 | ||
2168 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
2169 | pthru->timeout = 4; | |
2170 | pthru->ars = 1; | |
2171 | pthru->islogical = 0; | |
2172 | pthru->channel = 0; | |
2173 | pthru->target = (channel << 4) | target; | |
2174 | pthru->logdrv = SCP2LUN(scp); | |
2175 | pthru->reqsenselen = 14; | |
2176 | pthru->cdblen = scp->cmd_len; | |
2177 | ||
2178 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
2179 | ||
2180 | if (scp->request_bufflen) { | |
2181 | pthru->dataxferlen = scp->request_bufflen; | |
2182 | pthru->dataxferaddr = ccb->sgl_dma_h; | |
2183 | pthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2184 | } | |
2185 | else { | |
2186 | pthru->dataxferaddr = 0; | |
2187 | pthru->dataxferlen = 0; | |
2188 | pthru->numsge = 0; | |
2189 | } | |
2190 | return; | |
2191 | } | |
2192 | ||
2193 | ||
2194 | /** | |
2195 | * megaraid_mbox_prepare_epthru - prepare a command for physical devices | |
2196 | * @adapter - pointer to controller's soft state | |
2197 | * @scb - scsi control block | |
2198 | * @scp - scsi command from the mid-layer | |
2199 | * | |
2200 | * prepare a command for the scsi physical devices. This rountine prepares | |
2201 | * commands for devices which can take extended CDBs (>10 bytes) | |
2202 | */ | |
2203 | static void | |
2204 | megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, | |
2205 | struct scsi_cmnd *scp) | |
2206 | { | |
2207 | mbox_ccb_t *ccb; | |
2208 | mraid_epassthru_t *epthru; | |
2209 | uint8_t channel; | |
2210 | uint8_t target; | |
2211 | ||
2212 | ccb = (mbox_ccb_t *)scb->ccb; | |
2213 | epthru = ccb->epthru; | |
2214 | channel = scb->dev_channel; | |
2215 | target = scb->dev_target; | |
2216 | ||
2217 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
2218 | epthru->timeout = 4; | |
2219 | epthru->ars = 1; | |
2220 | epthru->islogical = 0; | |
2221 | epthru->channel = 0; | |
2222 | epthru->target = (channel << 4) | target; | |
2223 | epthru->logdrv = SCP2LUN(scp); | |
2224 | epthru->reqsenselen = 14; | |
2225 | epthru->cdblen = scp->cmd_len; | |
2226 | ||
2227 | memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); | |
2228 | ||
2229 | if (scp->request_bufflen) { | |
2230 | epthru->dataxferlen = scp->request_bufflen; | |
2231 | epthru->dataxferaddr = ccb->sgl_dma_h; | |
2232 | epthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2233 | } | |
2234 | else { | |
2235 | epthru->dataxferaddr = 0; | |
2236 | epthru->dataxferlen = 0; | |
2237 | epthru->numsge = 0; | |
2238 | } | |
2239 | return; | |
2240 | } | |
2241 | ||
2242 | ||
2243 | /** | |
2244 | * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs | |
2245 | * @adapter - controller's soft state | |
2246 | * | |
2247 | * Interrupt ackrowledgement sequence for memory mapped HBAs. Find out the | |
2248 | * completed command and put them on the completed list for later processing. | |
2249 | * | |
2250 | * Returns: 1 if the interrupt is valid, 0 otherwise | |
2251 | */ | |
2252 | static inline int | |
2253 | megaraid_ack_sequence(adapter_t *adapter) | |
2254 | { | |
2255 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2256 | mbox_t *mbox; | |
2257 | scb_t *scb; | |
2258 | uint8_t nstatus; | |
2259 | uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; | |
2260 | struct list_head clist; | |
2261 | int handled; | |
2262 | uint32_t dword; | |
2263 | unsigned long flags; | |
2264 | int i, j; | |
2265 | ||
2266 | ||
2267 | mbox = raid_dev->mbox; | |
2268 | ||
2269 | // move the SCBs from the firmware completed array to our local list | |
2270 | INIT_LIST_HEAD(&clist); | |
2271 | ||
2272 | // loop till F/W has more commands for us to complete | |
2273 | handled = 0; | |
2274 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
2275 | do { | |
2276 | /* | |
2277 | * Check if a valid interrupt is pending. If found, force the | |
2278 | * interrupt line low. | |
2279 | */ | |
2280 | dword = RDOUTDOOR(raid_dev); | |
2281 | if (dword != 0x10001234) break; | |
2282 | ||
2283 | handled = 1; | |
2284 | ||
2285 | WROUTDOOR(raid_dev, 0x10001234); | |
2286 | ||
2287 | nstatus = 0; | |
2288 | // wait for valid numstatus to post | |
2289 | for (i = 0; i < 0xFFFFF; i++) { | |
2290 | if (mbox->numstatus != 0xFF) { | |
2291 | nstatus = mbox->numstatus; | |
2292 | break; | |
2293 | } | |
2294 | rmb(); | |
2295 | } | |
2296 | mbox->numstatus = 0xFF; | |
2297 | ||
2298 | adapter->outstanding_cmds -= nstatus; | |
2299 | ||
2300 | for (i = 0; i < nstatus; i++) { | |
2301 | ||
2302 | // wait for valid command index to post | |
2303 | for (j = 0; j < 0xFFFFF; j++) { | |
2304 | if (mbox->completed[i] != 0xFF) break; | |
2305 | rmb(); | |
2306 | } | |
2307 | completed[i] = mbox->completed[i]; | |
2308 | mbox->completed[i] = 0xFF; | |
2309 | ||
2310 | if (completed[i] == 0xFF) { | |
2311 | con_log(CL_ANN, (KERN_CRIT | |
2312 | "megaraid: command posting timed out\n")); | |
2313 | ||
2314 | BUG(); | |
2315 | continue; | |
2316 | } | |
2317 | ||
2318 | // Get SCB associated with this command id | |
2319 | if (completed[i] >= MBOX_MAX_SCSI_CMDS) { | |
2320 | // a cmm command | |
2321 | scb = adapter->uscb_list + (completed[i] - | |
2322 | MBOX_MAX_SCSI_CMDS); | |
2323 | } | |
2324 | else { | |
2325 | // an os command | |
2326 | scb = adapter->kscb_list + completed[i]; | |
2327 | } | |
2328 | ||
2329 | scb->status = mbox->status; | |
2330 | list_add_tail(&scb->list, &clist); | |
2331 | } | |
2332 | ||
2333 | // Acknowledge interrupt | |
2334 | WRINDOOR(raid_dev, 0x02); | |
2335 | ||
2336 | } while(1); | |
2337 | ||
2338 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
2339 | ||
2340 | ||
2341 | // put the completed commands in the completed list. DPC would | |
2342 | // complete these commands later | |
2343 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2344 | ||
2345 | list_splice(&clist, &adapter->completed_list); | |
2346 | ||
2347 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2348 | ||
2349 | ||
2350 | // schedule the DPC if there is some work for it | |
2351 | if (handled) | |
2352 | tasklet_schedule(&adapter->dpc_h); | |
2353 | ||
2354 | return handled; | |
2355 | } | |
2356 | ||
2357 | ||
2358 | /** | |
2359 | * megaraid_isr - isr for memory based mailbox based controllers | |
2360 | * @irq - irq | |
2361 | * @devp - pointer to our soft state | |
2362 | * @regs - unused | |
2363 | * | |
2364 | * Interrupt service routine for memory-mapped mailbox controllers. | |
2365 | */ | |
2366 | static irqreturn_t | |
2367 | megaraid_isr(int irq, void *devp, struct pt_regs *regs) | |
2368 | { | |
2369 | adapter_t *adapter = devp; | |
2370 | int handled; | |
2371 | ||
2372 | handled = megaraid_ack_sequence(adapter); | |
2373 | ||
2374 | /* Loop through any pending requests */ | |
2375 | if (!adapter->quiescent) { | |
2376 | megaraid_mbox_runpendq(adapter, NULL); | |
2377 | } | |
2378 | ||
2379 | return IRQ_RETVAL(handled); | |
2380 | } | |
2381 | ||
2382 | ||
2383 | /** | |
2384 | * megaraid_mbox_sync_scb - sync kernel buffers | |
2385 | * @adapter : controller's soft state | |
2386 | * @scb : pointer to the resource packet | |
2387 | * | |
2388 | * DMA sync if required. | |
2389 | */ | |
2390 | static inline void | |
2391 | megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb) | |
2392 | { | |
2393 | mbox_ccb_t *ccb; | |
2394 | ||
2395 | ccb = (mbox_ccb_t *)scb->ccb; | |
2396 | ||
2397 | switch (scb->dma_type) { | |
2398 | ||
2399 | case MRAID_DMA_WBUF: | |
2400 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) { | |
2401 | pci_dma_sync_single_for_cpu(adapter->pdev, | |
2402 | ccb->buf_dma_h, | |
2403 | scb->scp->request_bufflen, | |
2404 | PCI_DMA_FROMDEVICE); | |
2405 | } | |
2406 | ||
2407 | pci_unmap_page(adapter->pdev, ccb->buf_dma_h, | |
2408 | scb->scp->request_bufflen, scb->dma_direction); | |
2409 | ||
2410 | break; | |
2411 | ||
2412 | case MRAID_DMA_WSG: | |
2413 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) { | |
2414 | pci_dma_sync_sg_for_cpu(adapter->pdev, | |
2415 | scb->scp->request_buffer, | |
2416 | scb->scp->use_sg, PCI_DMA_FROMDEVICE); | |
2417 | } | |
2418 | ||
2419 | pci_unmap_sg(adapter->pdev, scb->scp->request_buffer, | |
2420 | scb->scp->use_sg, scb->dma_direction); | |
2421 | ||
2422 | break; | |
2423 | ||
2424 | default: | |
2425 | break; | |
2426 | } | |
2427 | ||
2428 | return; | |
2429 | } | |
2430 | ||
2431 | ||
2432 | /** | |
2433 | * megaraid_mbox_dpc - the tasklet to complete the commands from completed list | |
2434 | * @devp : pointer to HBA soft state | |
2435 | * | |
2436 | * Pick up the commands from the completed list and send back to the owners. | |
2437 | * This is a reentrant function and does not assume any locks are held while | |
2438 | * it is being called. | |
2439 | */ | |
2440 | static void | |
2441 | megaraid_mbox_dpc(unsigned long devp) | |
2442 | { | |
2443 | adapter_t *adapter = (adapter_t *)devp; | |
2444 | mraid_device_t *raid_dev; | |
2445 | struct list_head clist; | |
2446 | struct scatterlist *sgl; | |
2447 | scb_t *scb; | |
2448 | scb_t *tmp; | |
2449 | struct scsi_cmnd *scp; | |
2450 | mraid_passthru_t *pthru; | |
2451 | mraid_epassthru_t *epthru; | |
2452 | mbox_ccb_t *ccb; | |
2453 | int islogical; | |
2454 | int pdev_index; | |
2455 | int pdev_state; | |
2456 | mbox_t *mbox; | |
2457 | unsigned long flags; | |
2458 | uint8_t c; | |
2459 | int status; | |
2460 | ||
2461 | ||
2462 | if (!adapter) return; | |
2463 | ||
2464 | raid_dev = ADAP2RAIDDEV(adapter); | |
2465 | ||
2466 | // move the SCBs from the completed list to our local list | |
2467 | INIT_LIST_HEAD(&clist); | |
2468 | ||
2469 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2470 | ||
2471 | list_splice_init(&adapter->completed_list, &clist); | |
2472 | ||
2473 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2474 | ||
2475 | ||
2476 | list_for_each_entry_safe(scb, tmp, &clist, list) { | |
2477 | ||
2478 | status = scb->status; | |
2479 | scp = scb->scp; | |
2480 | ccb = (mbox_ccb_t *)scb->ccb; | |
2481 | pthru = ccb->pthru; | |
2482 | epthru = ccb->epthru; | |
2483 | mbox = ccb->mbox; | |
2484 | ||
2485 | // Make sure f/w has completed a valid command | |
2486 | if (scb->state != SCB_ISSUED) { | |
2487 | con_log(CL_ANN, (KERN_CRIT | |
2488 | "megaraid critical err: invalid command %d:%d:%p\n", | |
2489 | scb->sno, scb->state, scp)); | |
2490 | BUG(); | |
2491 | continue; // Must never happen! | |
2492 | } | |
2493 | ||
2494 | // check for the management command and complete it right away | |
2495 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { | |
2496 | scb->state = SCB_FREE; | |
2497 | scb->status = status; | |
2498 | ||
2499 | // remove from local clist | |
2500 | list_del_init(&scb->list); | |
2501 | ||
2502 | megaraid_mbox_mm_done(adapter, scb); | |
2503 | ||
2504 | continue; | |
2505 | } | |
2506 | ||
2507 | // Was an abort issued for this command earlier | |
2508 | if (scb->state & SCB_ABORT) { | |
2509 | con_log(CL_ANN, (KERN_NOTICE | |
2510 | "megaraid: aborted cmd %lx[%x] completed\n", | |
2511 | scp->serial_number, scb->sno)); | |
2512 | } | |
2513 | ||
2514 | /* | |
2515 | * If the inquiry came of a disk drive which is not part of | |
2516 | * any RAID array, expose it to the kernel. For this to be | |
2517 | * enabled, user must set the "megaraid_expose_unconf_disks" | |
2518 | * flag to 1 by specifying it on module parameter list. | |
2519 | * This would enable data migration off drives from other | |
2520 | * configurations. | |
2521 | */ | |
2522 | islogical = MRAID_IS_LOGICAL(adapter, scp); | |
2523 | if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 | |
2524 | && IS_RAID_CH(raid_dev, scb->dev_channel)) { | |
2525 | ||
2526 | if (scp->use_sg) { | |
2527 | sgl = (struct scatterlist *) | |
2528 | scp->request_buffer; | |
2529 | ||
2530 | if (sgl->page) { | |
2531 | c = *(unsigned char *) | |
2532 | (page_address((&sgl[0])->page) + | |
2533 | (&sgl[0])->offset); | |
2534 | } | |
2535 | else { | |
2536 | con_log(CL_ANN, (KERN_WARNING | |
2537 | "megaraid mailbox: invalid sg:%d\n", | |
2538 | __LINE__)); | |
2539 | c = 0; | |
2540 | } | |
2541 | } | |
2542 | else { | |
2543 | c = *(uint8_t *)scp->request_buffer; | |
2544 | } | |
2545 | ||
2546 | if ((c & 0x1F ) == TYPE_DISK) { | |
2547 | pdev_index = (scb->dev_channel * 16) + | |
2548 | scb->dev_target; | |
2549 | pdev_state = | |
2550 | raid_dev->pdrv_state[pdev_index] & 0x0F; | |
2551 | ||
2552 | if (pdev_state == PDRV_ONLINE || | |
2553 | pdev_state == PDRV_FAILED || | |
2554 | pdev_state == PDRV_RBLD || | |
2555 | pdev_state == PDRV_HOTSPARE || | |
2556 | megaraid_expose_unconf_disks == 0) { | |
2557 | ||
2558 | status = 0xF0; | |
2559 | } | |
2560 | } | |
2561 | } | |
2562 | ||
2563 | // Convert MegaRAID status to Linux error code | |
2564 | switch (status) { | |
2565 | ||
2566 | case 0x00: | |
2567 | ||
2568 | scp->result = (DID_OK << 16); | |
2569 | break; | |
2570 | ||
2571 | case 0x02: | |
2572 | ||
2573 | /* set sense_buffer and result fields */ | |
2574 | if (mbox->cmd == MBOXCMD_PASSTHRU || | |
2575 | mbox->cmd == MBOXCMD_PASSTHRU64) { | |
2576 | ||
2577 | memcpy(scp->sense_buffer, pthru->reqsensearea, | |
2578 | 14); | |
2579 | ||
2580 | scp->result = DRIVER_SENSE << 24 | | |
2581 | DID_OK << 16 | CHECK_CONDITION << 1; | |
2582 | } | |
2583 | else { | |
2584 | if (mbox->cmd == MBOXCMD_EXTPTHRU) { | |
2585 | ||
2586 | memcpy(scp->sense_buffer, | |
2587 | epthru->reqsensearea, 14); | |
2588 | ||
2589 | scp->result = DRIVER_SENSE << 24 | | |
2590 | DID_OK << 16 | | |
2591 | CHECK_CONDITION << 1; | |
2592 | } else { | |
2593 | scp->sense_buffer[0] = 0x70; | |
2594 | scp->sense_buffer[2] = ABORTED_COMMAND; | |
2595 | scp->result = CHECK_CONDITION << 1; | |
2596 | } | |
2597 | } | |
2598 | break; | |
2599 | ||
2600 | case 0x08: | |
2601 | ||
2602 | scp->result = DID_BUS_BUSY << 16 | status; | |
2603 | break; | |
2604 | ||
2605 | default: | |
2606 | ||
2607 | /* | |
2608 | * If TEST_UNIT_READY fails, we know RESERVATION_STATUS | |
2609 | * failed | |
2610 | */ | |
2611 | if (scp->cmnd[0] == TEST_UNIT_READY) { | |
2612 | scp->result = DID_ERROR << 16 | | |
2613 | RESERVATION_CONFLICT << 1; | |
2614 | } | |
2615 | else | |
2616 | /* | |
2617 | * Error code returned is 1 if Reserve or Release | |
2618 | * failed or the input parameter is invalid | |
2619 | */ | |
2620 | if (status == 1 && (scp->cmnd[0] == RESERVE || | |
2621 | scp->cmnd[0] == RELEASE)) { | |
2622 | ||
2623 | scp->result = DID_ERROR << 16 | | |
2624 | RESERVATION_CONFLICT << 1; | |
2625 | } | |
2626 | else { | |
2627 | scp->result = DID_BAD_TARGET << 16 | status; | |
2628 | } | |
2629 | } | |
2630 | ||
2631 | // print a debug message for all failed commands | |
2632 | if (status) { | |
2633 | megaraid_mbox_display_scb(adapter, scb); | |
2634 | } | |
2635 | ||
2636 | // Free our internal resources and call the mid-layer callback | |
2637 | // routine | |
2638 | megaraid_mbox_sync_scb(adapter, scb); | |
2639 | ||
2640 | // remove from local clist | |
2641 | list_del_init(&scb->list); | |
2642 | ||
2643 | // put back in free list | |
2644 | megaraid_dealloc_scb(adapter, scb); | |
2645 | ||
2646 | // send the scsi packet back to kernel | |
2647 | spin_lock(adapter->host_lock); | |
2648 | scp->scsi_done(scp); | |
2649 | spin_unlock(adapter->host_lock); | |
2650 | } | |
2651 | ||
2652 | return; | |
2653 | } | |
2654 | ||
2655 | ||
2656 | /** | |
2657 | * megaraid_abort_handler - abort the scsi command | |
2658 | * @scp : command to be aborted | |
2659 | * | |
2660 | * Abort a previous SCSI request. Only commands on the pending list can be | |
2661 | * aborted. All the commands issued to the F/W must complete. | |
2662 | **/ | |
2663 | static int | |
2664 | megaraid_abort_handler(struct scsi_cmnd *scp) | |
2665 | { | |
2666 | adapter_t *adapter; | |
2667 | mraid_device_t *raid_dev; | |
2668 | scb_t *scb; | |
2669 | scb_t *tmp; | |
2670 | int found; | |
2671 | unsigned long flags; | |
2672 | int i; | |
2673 | ||
2674 | ||
2675 | adapter = SCP2ADAPTER(scp); | |
2676 | raid_dev = ADAP2RAIDDEV(adapter); | |
2677 | ||
2678 | assert_spin_locked(adapter->host_lock); | |
2679 | ||
2680 | con_log(CL_ANN, (KERN_WARNING | |
2681 | "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n", | |
2682 | scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp), | |
2683 | SCP2TARGET(scp), SCP2LUN(scp))); | |
2684 | ||
2685 | // If FW has stopped responding, simply return failure | |
2686 | if (raid_dev->hw_error) { | |
2687 | con_log(CL_ANN, (KERN_NOTICE | |
2688 | "megaraid: hw error, not aborting\n")); | |
2689 | return FAILED; | |
2690 | } | |
2691 | ||
2692 | // There might a race here, where the command was completed by the | |
2693 | // firmware and now it is on the completed list. Before we could | |
2694 | // complete the command to the kernel in dpc, the abort came. | |
2695 | // Find out if this is the case to avoid the race. | |
2696 | scb = NULL; | |
2697 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2698 | list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { | |
2699 | ||
2700 | if (scb->scp == scp) { // Found command | |
2701 | ||
2702 | list_del_init(&scb->list); // from completed list | |
2703 | ||
2704 | con_log(CL_ANN, (KERN_WARNING | |
2705 | "megaraid: %ld:%d[%d:%d], abort from completed list\n", | |
2706 | scp->serial_number, scb->sno, | |
2707 | scb->dev_channel, scb->dev_target)); | |
2708 | ||
2709 | scp->result = (DID_ABORT << 16); | |
2710 | scp->scsi_done(scp); | |
2711 | ||
2712 | megaraid_dealloc_scb(adapter, scb); | |
2713 | ||
2714 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), | |
2715 | flags); | |
2716 | ||
2717 | return SUCCESS; | |
2718 | } | |
2719 | } | |
2720 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2721 | ||
2722 | ||
2723 | // Find out if this command is still on the pending list. If it is and | |
2724 | // was never issued, abort and return success. If the command is owned | |
2725 | // by the firmware, we must wait for it to complete by the FW. | |
2726 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2727 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
2728 | ||
2729 | if (scb->scp == scp) { // Found command | |
2730 | ||
2731 | list_del_init(&scb->list); // from pending list | |
2732 | ||
2733 | ASSERT(!(scb->state & SCB_ISSUED)); | |
2734 | ||
2735 | con_log(CL_ANN, (KERN_WARNING | |
2736 | "megaraid abort: %ld[%d:%d], driver owner\n", | |
2737 | scp->serial_number, scb->dev_channel, | |
2738 | scb->dev_target)); | |
2739 | ||
2740 | scp->result = (DID_ABORT << 16); | |
2741 | scp->scsi_done(scp); | |
2742 | ||
2743 | megaraid_dealloc_scb(adapter, scb); | |
2744 | ||
2745 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
2746 | flags); | |
2747 | ||
2748 | return SUCCESS; | |
2749 | } | |
2750 | } | |
2751 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2752 | ||
2753 | ||
2754 | // Check do we even own this command, in which case this would be | |
2755 | // owned by the firmware. The only way to locate the FW scb is to | |
2756 | // traverse through the list of all SCB, since driver does not | |
2757 | // maintain these SCBs on any list | |
2758 | found = 0; | |
2759 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
2760 | scb = adapter->kscb_list + i; | |
2761 | ||
2762 | if (scb->scp == scp) { | |
2763 | ||
2764 | found = 1; | |
2765 | ||
2766 | if (!(scb->state & SCB_ISSUED)) { | |
2767 | con_log(CL_ANN, (KERN_WARNING | |
2768 | "megaraid abort: %ld%d[%d:%d], invalid state\n", | |
2769 | scp->serial_number, scb->sno, scb->dev_channel, | |
2770 | scb->dev_target)); | |
2771 | BUG(); | |
2772 | } | |
2773 | else { | |
2774 | con_log(CL_ANN, (KERN_WARNING | |
2775 | "megaraid abort: %ld:%d[%d:%d], fw owner\n", | |
2776 | scp->serial_number, scb->sno, scb->dev_channel, | |
2777 | scb->dev_target)); | |
2778 | } | |
2779 | } | |
2780 | } | |
2781 | ||
2782 | if (!found) { | |
2783 | con_log(CL_ANN, (KERN_WARNING | |
2784 | "megaraid abort: scsi cmd:%ld, do now own\n", | |
2785 | scp->serial_number)); | |
2786 | ||
2787 | // FIXME: Should there be a callback for this command? | |
2788 | return SUCCESS; | |
2789 | } | |
2790 | ||
2791 | // We cannot actually abort a command owned by firmware, return | |
2792 | // failure and wait for reset. In host reset handler, we will find out | |
2793 | // if the HBA is still live | |
2794 | return FAILED; | |
2795 | } | |
2796 | ||
2797 | ||
2798 | /** | |
2799 | * megaraid_reset_handler - device reset hadler for mailbox based driver | |
2800 | * @scp : reference command | |
2801 | * | |
2802 | * Reset handler for the mailbox based controller. First try to find out if | |
2803 | * the FW is still live, in which case the outstanding commands counter mut go | |
2804 | * down to 0. If that happens, also issue the reservation reset command to | |
2805 | * relinquish (possible) reservations on the logical drives connected to this | |
2806 | * host | |
2807 | **/ | |
2808 | static int | |
2809 | megaraid_reset_handler(struct scsi_cmnd *scp) | |
2810 | { | |
2811 | adapter_t *adapter; | |
2812 | scb_t *scb; | |
2813 | scb_t *tmp; | |
2814 | mraid_device_t *raid_dev; | |
2815 | unsigned long flags; | |
2816 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2817 | int rval; | |
2818 | int recovery_window; | |
2819 | int recovering; | |
2820 | int i; | |
2821 | ||
2822 | adapter = SCP2ADAPTER(scp); | |
2823 | raid_dev = ADAP2RAIDDEV(adapter); | |
2824 | ||
2825 | assert_spin_locked(adapter->host_lock); | |
2826 | ||
2827 | con_log(CL_ANN, (KERN_WARNING "megaraid: reseting the host...\n")); | |
2828 | ||
2829 | // return failure if adapter is not responding | |
2830 | if (raid_dev->hw_error) { | |
2831 | con_log(CL_ANN, (KERN_NOTICE | |
2832 | "megaraid: hw error, cannot reset\n")); | |
2833 | return FAILED; | |
2834 | } | |
2835 | ||
2836 | ||
2837 | // Under exceptional conditions, FW can take up to 3 minutes to | |
2838 | // complete command processing. Wait for additional 2 minutes for the | |
2839 | // pending commands counter to go down to 0. If it doesn't, let the | |
2840 | // controller be marked offline | |
2841 | // Also, reset all the commands currently owned by the driver | |
2842 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2843 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
2844 | ||
2845 | list_del_init(&scb->list); // from pending list | |
2846 | ||
2847 | con_log(CL_ANN, (KERN_WARNING | |
2848 | "megaraid: %ld:%d[%d:%d], reset from pending list\n", | |
2849 | scp->serial_number, scb->sno, | |
2850 | scb->dev_channel, scb->dev_target)); | |
2851 | ||
2852 | scp->result = (DID_RESET << 16); | |
2853 | scp->scsi_done(scp); | |
2854 | ||
2855 | megaraid_dealloc_scb(adapter, scb); | |
2856 | } | |
2857 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2858 | ||
2859 | if (adapter->outstanding_cmds) { | |
2860 | con_log(CL_ANN, (KERN_NOTICE | |
2861 | "megaraid: %d outstanding commands. Max wait %d sec\n", | |
2862 | adapter->outstanding_cmds, MBOX_RESET_WAIT)); | |
2863 | } | |
2864 | ||
2865 | spin_unlock(adapter->host_lock); | |
2866 | ||
2867 | recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; | |
2868 | ||
2869 | recovering = adapter->outstanding_cmds; | |
2870 | ||
2871 | for (i = 0; i < recovery_window && adapter->outstanding_cmds; i++) { | |
2872 | ||
2873 | megaraid_ack_sequence(adapter); | |
2874 | ||
2875 | // print a message once every 5 seconds only | |
2876 | if (!(i % 5)) { | |
2877 | con_log(CL_ANN, ( | |
2878 | "megaraid mbox: Wait for %d commands to complete:%d\n", | |
2879 | adapter->outstanding_cmds, | |
2880 | MBOX_RESET_WAIT - i)); | |
2881 | } | |
2882 | ||
2883 | // bailout if no recovery happended in reset time | |
2884 | if ((i == MBOX_RESET_WAIT) && | |
2885 | (recovering == adapter->outstanding_cmds)) { | |
2886 | break; | |
2887 | } | |
2888 | ||
2889 | msleep(1000); | |
2890 | } | |
2891 | ||
2892 | spin_lock(adapter->host_lock); | |
2893 | ||
2894 | // If still outstanding commands, bail out | |
2895 | if (adapter->outstanding_cmds) { | |
2896 | con_log(CL_ANN, (KERN_WARNING | |
2897 | "megaraid mbox: critical hardware error!\n")); | |
2898 | ||
2899 | raid_dev->hw_error = 1; | |
2900 | ||
2901 | return FAILED; | |
2902 | } | |
2903 | else { | |
2904 | con_log(CL_ANN, (KERN_NOTICE | |
2905 | "megaraid mbox: reset sequence completed sucessfully\n")); | |
2906 | } | |
2907 | ||
2908 | ||
2909 | // If the controller supports clustering, reset reservations | |
2910 | if (!adapter->ha) return SUCCESS; | |
2911 | ||
2912 | // clear reservations if any | |
2913 | raw_mbox[0] = CLUSTER_CMD; | |
2914 | raw_mbox[2] = RESET_RESERVATIONS; | |
2915 | ||
2916 | rval = SUCCESS; | |
2917 | if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { | |
2918 | con_log(CL_ANN, | |
2919 | (KERN_INFO "megaraid: reservation reset\n")); | |
2920 | } | |
2921 | else { | |
2922 | rval = FAILED; | |
2923 | con_log(CL_ANN, (KERN_WARNING | |
2924 | "megaraid: reservation reset failed\n")); | |
2925 | } | |
2926 | ||
2927 | return rval; | |
2928 | } | |
2929 | ||
2930 | ||
2931 | /* | |
2932 | * START: internal commands library | |
2933 | * | |
2934 | * This section of the driver has the common routine used by the driver and | |
2935 | * also has all the FW routines | |
2936 | */ | |
2937 | ||
2938 | /** | |
2939 | * mbox_post_sync_cmd() - blocking command to the mailbox based controllers | |
2940 | * @adapter - controller's soft state | |
2941 | * @raw_mbox - the mailbox | |
2942 | * | |
2943 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
2944 | * controllers | |
2945 | */ | |
2946 | static int | |
2947 | mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) | |
2948 | { | |
2949 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2950 | mbox64_t *mbox64; | |
2951 | mbox_t *mbox; | |
2952 | uint8_t status; | |
2953 | int i; | |
2954 | ||
2955 | ||
2956 | mbox64 = raid_dev->mbox64; | |
2957 | mbox = raid_dev->mbox; | |
2958 | ||
2959 | /* | |
2960 | * Wait until mailbox is free | |
2961 | */ | |
2962 | if (megaraid_busywait_mbox(raid_dev) != 0) | |
2963 | goto blocked_mailbox; | |
2964 | ||
2965 | /* | |
2966 | * Copy mailbox data into host structure | |
2967 | */ | |
2968 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
2969 | mbox->cmdid = 0xFE; | |
2970 | mbox->busy = 1; | |
2971 | mbox->poll = 0; | |
2972 | mbox->ack = 0; | |
2973 | mbox->numstatus = 0xFF; | |
2974 | mbox->status = 0xFF; | |
2975 | ||
2976 | wmb(); | |
2977 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2978 | ||
2979 | // wait for maximum 1 second for status to post. If the status is not | |
2980 | // available within 1 second, assume FW is initializing and wait | |
2981 | // for an extended amount of time | |
2982 | if (mbox->numstatus == 0xFF) { // status not yet available | |
2983 | udelay(25);; | |
2984 | ||
2985 | for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { | |
2986 | rmb(); | |
2987 | msleep(1); | |
2988 | } | |
2989 | ||
2990 | ||
2991 | if (i == 1000) { | |
2992 | con_log(CL_ANN, (KERN_NOTICE | |
2993 | "megaraid mailbox: wait for FW to boot ")); | |
2994 | ||
2995 | for (i = 0; (mbox->numstatus == 0xFF) && | |
2996 | (i < MBOX_RESET_WAIT); i++) { | |
2997 | rmb(); | |
2998 | con_log(CL_ANN, ("\b\b\b\b\b[%03d]", | |
2999 | MBOX_RESET_WAIT - i)); | |
3000 | msleep(1000); | |
3001 | } | |
3002 | ||
3003 | if (i == MBOX_RESET_WAIT) { | |
3004 | ||
3005 | con_log(CL_ANN, ( | |
3006 | "\nmegaraid mailbox: status not available\n")); | |
3007 | ||
3008 | return -1; | |
3009 | } | |
3010 | con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); | |
3011 | } | |
3012 | } | |
3013 | ||
3014 | // wait for maximum 1 second for poll semaphore | |
3015 | if (mbox->poll != 0x77) { | |
3016 | udelay(25); | |
3017 | ||
3018 | for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { | |
3019 | rmb(); | |
3020 | msleep(1); | |
3021 | } | |
3022 | ||
3023 | if (i == 1000) { | |
3024 | con_log(CL_ANN, (KERN_WARNING | |
3025 | "megaraid mailbox: could not get poll semaphore\n")); | |
3026 | return -1; | |
3027 | } | |
3028 | } | |
3029 | ||
3030 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
3031 | wmb(); | |
3032 | ||
3033 | // wait for maximum 1 second for acknowledgement | |
3034 | if (RDINDOOR(raid_dev) & 0x2) { | |
3035 | udelay(25); | |
3036 | ||
3037 | for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { | |
3038 | rmb(); | |
3039 | msleep(1); | |
3040 | } | |
3041 | ||
3042 | if (i == 1000) { | |
3043 | con_log(CL_ANN, (KERN_WARNING | |
3044 | "megaraid mailbox: could not acknowledge\n")); | |
3045 | return -1; | |
3046 | } | |
3047 | } | |
3048 | mbox->poll = 0; | |
3049 | mbox->ack = 0x77; | |
3050 | ||
3051 | status = mbox->status; | |
3052 | ||
3053 | // invalidate the completed command id array. After command | |
3054 | // completion, firmware would write the valid id. | |
3055 | mbox->numstatus = 0xFF; | |
3056 | mbox->status = 0xFF; | |
3057 | for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { | |
3058 | mbox->completed[i] = 0xFF; | |
3059 | } | |
3060 | ||
3061 | return status; | |
3062 | ||
3063 | blocked_mailbox: | |
3064 | ||
3065 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); | |
3066 | return -1; | |
3067 | } | |
3068 | ||
3069 | ||
3070 | /** | |
3071 | * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers | |
3072 | * @adapter - controller's soft state | |
3073 | * @raw_mbox - the mailbox | |
3074 | * | |
3075 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
3076 | * controllers. This is a faster version of the synchronous command and | |
3077 | * therefore can be called in interrupt-context as well | |
3078 | */ | |
3079 | static int | |
3080 | mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) | |
3081 | { | |
3082 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3083 | mbox_t *mbox; | |
3084 | long i; | |
3085 | ||
3086 | ||
3087 | mbox = raid_dev->mbox; | |
3088 | ||
3089 | // return immediately if the mailbox is busy | |
3090 | if (mbox->busy) return -1; | |
3091 | ||
3092 | // Copy mailbox data into host structure | |
3093 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); | |
3094 | mbox->cmdid = 0xFE; | |
3095 | mbox->busy = 1; | |
3096 | mbox->poll = 0; | |
3097 | mbox->ack = 0; | |
3098 | mbox->numstatus = 0xFF; | |
3099 | mbox->status = 0xFF; | |
3100 | ||
3101 | wmb(); | |
3102 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
3103 | ||
3104 | for (i = 0; i < 0xFFFFF; i++) { | |
3105 | if (mbox->numstatus != 0xFF) break; | |
3106 | } | |
3107 | ||
3108 | if (i == 0xFFFFF) { | |
3109 | // We may need to re-calibrate the counter | |
3110 | con_log(CL_ANN, (KERN_CRIT | |
3111 | "megaraid: fast sync command timed out\n")); | |
3112 | } | |
3113 | ||
3114 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
3115 | wmb(); | |
3116 | ||
3117 | return mbox->status; | |
3118 | } | |
3119 | ||
3120 | ||
3121 | /** | |
3122 | * megaraid_busywait_mbox() - Wait until the controller's mailbox is available | |
3123 | * @raid_dev - RAID device (HBA) soft state | |
3124 | * | |
3125 | * wait until the controller's mailbox is available to accept more commands. | |
3126 | * wait for at most 1 second | |
3127 | */ | |
3128 | static int | |
3129 | megaraid_busywait_mbox(mraid_device_t *raid_dev) | |
3130 | { | |
3131 | mbox_t *mbox = raid_dev->mbox; | |
3132 | int i = 0; | |
3133 | ||
3134 | if (mbox->busy) { | |
3135 | udelay(25); | |
3136 | for (i = 0; mbox->busy && i < 1000; i++) | |
3137 | msleep(1); | |
3138 | } | |
3139 | ||
3140 | if (i < 1000) return 0; | |
3141 | else return -1; | |
3142 | } | |
3143 | ||
3144 | ||
3145 | /** | |
3146 | * megaraid_mbox_product_info - some static information about the controller | |
3147 | * @adapter - our soft state | |
3148 | * | |
3149 | * issue commands to the controller to grab some parameters required by our | |
3150 | * caller. | |
3151 | */ | |
3152 | static int | |
3153 | megaraid_mbox_product_info(adapter_t *adapter) | |
3154 | { | |
3155 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3156 | mbox_t *mbox; | |
3157 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3158 | mraid_pinfo_t *pinfo; | |
3159 | dma_addr_t pinfo_dma_h; | |
3160 | mraid_inquiry3_t *mraid_inq3; | |
3161 | int i; | |
3162 | ||
3163 | ||
3164 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3165 | mbox = (mbox_t *)raw_mbox; | |
3166 | ||
3167 | /* | |
3168 | * Issue an ENQUIRY3 command to find out certain adapter parameters, | |
3169 | * e.g., max channels, max commands etc. | |
3170 | */ | |
3171 | pinfo = pci_alloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3172 | &pinfo_dma_h); | |
3173 | ||
3174 | if (pinfo == NULL) { | |
3175 | con_log(CL_ANN, (KERN_WARNING | |
3176 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
3177 | __LINE__)); | |
3178 | ||
3179 | return -1; | |
3180 | } | |
3181 | memset(pinfo, 0, sizeof(mraid_pinfo_t)); | |
3182 | ||
3183 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3184 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3185 | ||
3186 | raw_mbox[0] = FC_NEW_CONFIG; | |
3187 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; | |
3188 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; | |
3189 | ||
3190 | // Issue the command | |
3191 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3192 | ||
3193 | con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); | |
3194 | ||
3195 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3196 | pinfo, pinfo_dma_h); | |
3197 | ||
3198 | return -1; | |
3199 | } | |
3200 | ||
3201 | /* | |
3202 | * Collect information about state of each physical drive | |
3203 | * attached to the controller. We will expose all the disks | |
3204 | * which are not part of RAID | |
3205 | */ | |
3206 | mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; | |
3207 | for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { | |
3208 | raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; | |
3209 | } | |
3210 | ||
3211 | /* | |
3212 | * Get product info for information like number of channels, | |
3213 | * maximum commands supported. | |
3214 | */ | |
3215 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3216 | mbox->xferaddr = (uint32_t)pinfo_dma_h; | |
3217 | ||
3218 | raw_mbox[0] = FC_NEW_CONFIG; | |
3219 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; | |
3220 | ||
3221 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3222 | ||
3223 | con_log(CL_ANN, (KERN_WARNING | |
3224 | "megaraid: product info failed\n")); | |
3225 | ||
3226 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3227 | pinfo, pinfo_dma_h); | |
3228 | ||
3229 | return -1; | |
3230 | } | |
3231 | ||
3232 | /* | |
3233 | * Setup some parameters for host, as required by our caller | |
3234 | */ | |
3235 | adapter->max_channel = pinfo->nchannels; | |
3236 | ||
3237 | /* | |
3238 | * we will export all the logical drives on a single channel. | |
3239 | * Add 1 since inquires do not come for inititor ID | |
3240 | */ | |
3241 | adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; | |
3242 | adapter->max_lun = 8; // up to 8 LUNs for non-disk devices | |
3243 | ||
3244 | /* | |
3245 | * These are the maximum outstanding commands for the scsi-layer | |
3246 | */ | |
3247 | adapter->max_cmds = MBOX_MAX_SCSI_CMDS; | |
3248 | ||
3249 | memset(adapter->fw_version, 0, VERSION_SIZE); | |
3250 | memset(adapter->bios_version, 0, VERSION_SIZE); | |
3251 | ||
3252 | memcpy(adapter->fw_version, pinfo->fw_version, 4); | |
3253 | adapter->fw_version[4] = 0; | |
3254 | ||
3255 | memcpy(adapter->bios_version, pinfo->bios_version, 4); | |
3256 | adapter->bios_version[4] = 0; | |
3257 | ||
3258 | con_log(CL_ANN, (KERN_NOTICE | |
3259 | "megaraid: fw version:[%s] bios version:[%s]\n", | |
3260 | adapter->fw_version, adapter->bios_version)); | |
3261 | ||
3262 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo, | |
3263 | pinfo_dma_h); | |
3264 | ||
3265 | return 0; | |
3266 | } | |
3267 | ||
3268 | ||
3269 | ||
3270 | /** | |
3271 | * megaraid_mbox_extended_cdb - check for support for extended CDBs | |
3272 | * @adapter - soft state for the controller | |
3273 | * | |
3274 | * this routine check whether the controller in question supports extended | |
3275 | * ( > 10 bytes ) CDBs | |
3276 | */ | |
3277 | static int | |
3278 | megaraid_mbox_extended_cdb(adapter_t *adapter) | |
3279 | { | |
3280 | mbox_t *mbox; | |
3281 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3282 | int rval; | |
3283 | ||
3284 | mbox = (mbox_t *)raw_mbox; | |
3285 | ||
3286 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3287 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3288 | ||
3289 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3290 | ||
3291 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3292 | raw_mbox[2] = SUPPORT_EXT_CDB; | |
3293 | ||
3294 | /* | |
3295 | * Issue the command | |
3296 | */ | |
3297 | rval = 0; | |
3298 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3299 | rval = -1; | |
3300 | } | |
3301 | ||
3302 | return rval; | |
3303 | } | |
3304 | ||
3305 | ||
3306 | /** | |
3307 | * megaraid_mbox_support_ha - Do we support clustering | |
3308 | * @adapter - soft state for the controller | |
3309 | * @init_id - ID of the initiator | |
3310 | * | |
3311 | * Determine if the firmware supports clustering and the ID of the initiator. | |
3312 | */ | |
3313 | static int | |
3314 | megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) | |
3315 | { | |
3316 | mbox_t *mbox; | |
3317 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3318 | int rval; | |
3319 | ||
3320 | ||
3321 | mbox = (mbox_t *)raw_mbox; | |
3322 | ||
3323 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3324 | ||
3325 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3326 | ||
3327 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3328 | ||
3329 | raw_mbox[0] = GET_TARGET_ID; | |
3330 | ||
3331 | // Issue the command | |
3332 | *init_id = 7; | |
3333 | rval = -1; | |
3334 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3335 | ||
3336 | *init_id = *(uint8_t *)adapter->ibuf; | |
3337 | ||
3338 | con_log(CL_ANN, (KERN_INFO | |
3339 | "megaraid: cluster firmware, initiator ID: %d\n", | |
3340 | *init_id)); | |
3341 | ||
3342 | rval = 0; | |
3343 | } | |
3344 | ||
3345 | return rval; | |
3346 | } | |
3347 | ||
3348 | ||
3349 | /** | |
3350 | * megaraid_mbox_support_random_del - Do we support random deletion | |
3351 | * @adapter - soft state for the controller | |
3352 | * | |
3353 | * Determine if the firmware supports random deletion | |
3354 | * Return: 1 is operation supported, 0 otherwise | |
3355 | */ | |
3356 | static int | |
3357 | megaraid_mbox_support_random_del(adapter_t *adapter) | |
3358 | { | |
3359 | mbox_t *mbox; | |
3360 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3361 | int rval; | |
3362 | ||
3363 | ||
3364 | mbox = (mbox_t *)raw_mbox; | |
3365 | ||
3366 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3367 | ||
3368 | raw_mbox[0] = FC_DEL_LOGDRV; | |
3369 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; | |
3370 | ||
3371 | // Issue the command | |
3372 | rval = 0; | |
3373 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3374 | ||
3375 | con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); | |
3376 | ||
3377 | rval = 1; | |
3378 | } | |
3379 | ||
3380 | return rval; | |
3381 | } | |
3382 | ||
3383 | ||
3384 | /** | |
3385 | * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware | |
3386 | * @adapter - soft state for the controller | |
3387 | * | |
3388 | * Find out the maximum number of scatter-gather elements supported by the | |
3389 | * firmware | |
3390 | */ | |
3391 | static int | |
3392 | megaraid_mbox_get_max_sg(adapter_t *adapter) | |
3393 | { | |
3394 | mbox_t *mbox; | |
3395 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3396 | int nsg; | |
3397 | ||
3398 | ||
3399 | mbox = (mbox_t *)raw_mbox; | |
3400 | ||
3401 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3402 | ||
3403 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3404 | ||
3405 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3406 | ||
3407 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3408 | raw_mbox[2] = GET_MAX_SG_SUPPORT; | |
3409 | ||
3410 | // Issue the command | |
3411 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3412 | nsg = *(uint8_t *)adapter->ibuf; | |
3413 | } | |
3414 | else { | |
3415 | nsg = MBOX_DEFAULT_SG_SIZE; | |
3416 | } | |
3417 | ||
3418 | if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; | |
3419 | ||
3420 | return nsg; | |
3421 | } | |
3422 | ||
3423 | ||
3424 | /** | |
3425 | * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels | |
3426 | * @adapter - soft state for the controller | |
3427 | * | |
3428 | * Enumerate the RAID and SCSI channels for ROMB platoforms so that channels | |
3429 | * can be exported as regular SCSI channels | |
3430 | */ | |
3431 | static void | |
3432 | megaraid_mbox_enum_raid_scsi(adapter_t *adapter) | |
3433 | { | |
3434 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3435 | mbox_t *mbox; | |
3436 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3437 | ||
3438 | ||
3439 | mbox = (mbox_t *)raw_mbox; | |
3440 | ||
3441 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3442 | ||
3443 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3444 | ||
3445 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3446 | ||
3447 | raw_mbox[0] = CHNL_CLASS; | |
3448 | raw_mbox[2] = GET_CHNL_CLASS; | |
3449 | ||
3450 | // Issue the command. If the command fails, all channels are RAID | |
3451 | // channels | |
3452 | raid_dev->channel_class = 0xFF; | |
3453 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3454 | raid_dev->channel_class = *(uint8_t *)adapter->ibuf; | |
3455 | } | |
3456 | ||
3457 | return; | |
3458 | } | |
3459 | ||
3460 | ||
3461 | /** | |
3462 | * megaraid_mbox_flush_cache - flush adapter and disks cache | |
3463 | * @param adapter : soft state for the controller | |
3464 | * | |
3465 | * Flush adapter cache followed by disks cache | |
3466 | */ | |
3467 | static void | |
3468 | megaraid_mbox_flush_cache(adapter_t *adapter) | |
3469 | { | |
3470 | mbox_t *mbox; | |
3471 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3472 | ||
3473 | ||
3474 | mbox = (mbox_t *)raw_mbox; | |
3475 | ||
3476 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3477 | ||
3478 | raw_mbox[0] = FLUSH_ADAPTER; | |
3479 | ||
3480 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3481 | con_log(CL_ANN, ("megaraid: flush adapter failed\n")); | |
3482 | } | |
3483 | ||
3484 | raw_mbox[0] = FLUSH_SYSTEM; | |
3485 | ||
3486 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3487 | con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); | |
3488 | } | |
3489 | ||
3490 | return; | |
3491 | } | |
3492 | ||
3493 | ||
3494 | /** | |
3495 | * megaraid_mbox_display_scb - display SCB information, mostly debug purposes | |
3496 | * @param adapter : controllers' soft state | |
3497 | * @param scb : SCB to be displayed | |
3498 | * @param level : debug level for console print | |
3499 | * | |
3500 | * Diplay information about the given SCB iff the current debug level is | |
3501 | * verbose | |
3502 | */ | |
3503 | static void | |
3504 | megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) | |
3505 | { | |
3506 | mbox_ccb_t *ccb; | |
3507 | struct scsi_cmnd *scp; | |
3508 | mbox_t *mbox; | |
3509 | int level; | |
3510 | int i; | |
3511 | ||
3512 | ||
3513 | ccb = (mbox_ccb_t *)scb->ccb; | |
3514 | scp = scb->scp; | |
3515 | mbox = ccb->mbox; | |
3516 | ||
3517 | level = CL_DLEVEL3; | |
3518 | ||
3519 | con_log(level, (KERN_NOTICE | |
3520 | "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, | |
3521 | mbox->cmd, scb->sno)); | |
3522 | ||
3523 | con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", | |
3524 | mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, | |
3525 | mbox->numsge)); | |
3526 | ||
3527 | if (!scp) return; | |
3528 | ||
3529 | con_log(level, (KERN_NOTICE "scsi cmnd: ")); | |
3530 | ||
3531 | for (i = 0; i < scp->cmd_len; i++) { | |
3532 | con_log(level, ("%#2.02x ", scp->cmnd[i])); | |
3533 | } | |
3534 | ||
3535 | con_log(level, ("\n")); | |
3536 | ||
3537 | return; | |
3538 | } | |
3539 | ||
3540 | ||
3541 | /** | |
3542 | * megaraid_mbox_setup_device_map - manage device ids | |
3543 | * @adapter : Driver's soft state | |
3544 | * | |
3545 | * Manange the device ids to have an appropraite mapping between the kernel | |
3546 | * scsi addresses and megaraid scsi and logical drive addresses. We export | |
3547 | * scsi devices on their actual addresses, whereas the logical drives are | |
3548 | * exported on a virtual scsi channel. | |
3549 | **/ | |
3550 | static void | |
3551 | megaraid_mbox_setup_device_map(adapter_t *adapter) | |
3552 | { | |
3553 | uint8_t c; | |
3554 | uint8_t t; | |
3555 | ||
3556 | /* | |
3557 | * First fill the values on the logical drive channel | |
3558 | */ | |
3559 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3560 | adapter->device_ids[adapter->max_channel][t] = | |
3561 | (t < adapter->init_id) ? t : t - 1; | |
3562 | ||
3563 | adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; | |
3564 | ||
3565 | /* | |
3566 | * Fill the values on the physical devices channels | |
3567 | */ | |
3568 | for (c = 0; c < adapter->max_channel; c++) | |
3569 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3570 | adapter->device_ids[c][t] = (c << 8) | t; | |
3571 | } | |
3572 | ||
3573 | ||
3574 | /* | |
3575 | * END: internal commands library | |
3576 | */ | |
3577 | ||
3578 | /* | |
3579 | * START: Interface for the common management module | |
3580 | * | |
3581 | * This is the module, which interfaces with the common mangement module to | |
3582 | * provide support for ioctl and sysfs | |
3583 | */ | |
3584 | ||
3585 | /** | |
3586 | * megaraid_cmm_register - register with the mangement module | |
3587 | * @param adapter : HBA soft state | |
3588 | * | |
3589 | * Register with the management module, which allows applications to issue | |
3590 | * ioctl calls to the drivers. This interface is used by the management module | |
3591 | * to setup sysfs support as well. | |
3592 | */ | |
3593 | static int | |
3594 | megaraid_cmm_register(adapter_t *adapter) | |
3595 | { | |
3596 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3597 | mraid_mmadp_t adp; | |
3598 | scb_t *scb; | |
3599 | mbox_ccb_t *ccb; | |
3600 | int rval; | |
3601 | int i; | |
3602 | ||
3603 | // Allocate memory for the base list of scb for management module. | |
3604 | adapter->uscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_USER_CMDS, | |
3605 | GFP_KERNEL); | |
3606 | ||
3607 | if (adapter->uscb_list == NULL) { | |
3608 | con_log(CL_ANN, (KERN_WARNING | |
3609 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
3610 | __LINE__)); | |
3611 | return -1; | |
3612 | } | |
3613 | memset(adapter->uscb_list, 0, sizeof(scb_t) * MBOX_MAX_USER_CMDS); | |
3614 | ||
3615 | ||
3616 | // Initialize the synchronization parameters for resources for | |
3617 | // commands for management module | |
3618 | INIT_LIST_HEAD(&adapter->uscb_pool); | |
3619 | ||
3620 | spin_lock_init(USER_FREE_LIST_LOCK(adapter)); | |
3621 | ||
3622 | ||
3623 | ||
3624 | // link all the packets. Note, CCB for commands, coming from the | |
3625 | // commom management module, mailbox physical address are already | |
3626 | // setup by it. We just need placeholder for that in our local command | |
3627 | // control blocks | |
3628 | for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { | |
3629 | ||
3630 | scb = adapter->uscb_list + i; | |
3631 | ccb = raid_dev->uccb_list + i; | |
3632 | ||
3633 | scb->ccb = (caddr_t)ccb; | |
3634 | ccb->mbox64 = raid_dev->umbox64 + i; | |
3635 | ccb->mbox = &ccb->mbox64->mbox32; | |
3636 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
3637 | ||
3638 | scb->gp = 0; | |
3639 | ||
3640 | // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR | |
3641 | // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) | |
3642 | scb->sno = i + MBOX_MAX_SCSI_CMDS; | |
3643 | ||
3644 | scb->scp = NULL; | |
3645 | scb->state = SCB_FREE; | |
3646 | scb->dma_direction = PCI_DMA_NONE; | |
3647 | scb->dma_type = MRAID_DMA_NONE; | |
3648 | scb->dev_channel = -1; | |
3649 | scb->dev_target = -1; | |
3650 | ||
3651 | // put scb in the free pool | |
3652 | list_add_tail(&scb->list, &adapter->uscb_pool); | |
3653 | } | |
3654 | ||
3655 | adp.unique_id = adapter->unique_id; | |
3656 | adp.drvr_type = DRVRTYPE_MBOX; | |
3657 | adp.drvr_data = (unsigned long)adapter; | |
3658 | adp.pdev = adapter->pdev; | |
3659 | adp.issue_uioc = megaraid_mbox_mm_handler; | |
3660 | adp.timeout = 300; | |
3661 | adp.max_kioc = MBOX_MAX_USER_CMDS; | |
3662 | ||
3663 | if ((rval = mraid_mm_register_adp(&adp)) != 0) { | |
3664 | ||
3665 | con_log(CL_ANN, (KERN_WARNING | |
3666 | "megaraid mbox: did not register with CMM\n")); | |
3667 | ||
3668 | kfree(adapter->uscb_list); | |
3669 | } | |
3670 | ||
3671 | return rval; | |
3672 | } | |
3673 | ||
3674 | ||
3675 | /** | |
3676 | * megaraid_cmm_unregister - un-register with the mangement module | |
3677 | * @param adapter : HBA soft state | |
3678 | * | |
3679 | * Un-register with the management module. | |
3680 | * FIXME: mgmt module must return failure for unregister if it has pending | |
3681 | * commands in LLD | |
3682 | */ | |
3683 | static int | |
3684 | megaraid_cmm_unregister(adapter_t *adapter) | |
3685 | { | |
3686 | kfree(adapter->uscb_list); | |
3687 | mraid_mm_unregister_adp(adapter->unique_id); | |
3688 | return 0; | |
3689 | } | |
3690 | ||
3691 | ||
3692 | /** | |
3693 | * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD | |
3694 | * @param drvr_data : LLD specific data | |
3695 | * @param kioc : CMM interface packet | |
3696 | * @param action : command action | |
3697 | * | |
3698 | * This routine is invoked whenever the Common Mangement Module (CMM) has a | |
3699 | * command for us. The 'action' parameter specifies if this is a new command | |
3700 | * or otherwise. | |
3701 | */ | |
3702 | static int | |
3703 | megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) | |
3704 | { | |
3705 | adapter_t *adapter; | |
3706 | ||
3707 | if (action != IOCTL_ISSUE) { | |
3708 | con_log(CL_ANN, (KERN_WARNING | |
3709 | "megaraid: unsupported management action:%#2x\n", | |
3710 | action)); | |
3711 | return (-ENOTSUPP); | |
3712 | } | |
3713 | ||
3714 | adapter = (adapter_t *)drvr_data; | |
3715 | ||
3716 | // make sure this adapter is not being detached right now. | |
3717 | if (atomic_read(&adapter->being_detached)) { | |
3718 | con_log(CL_ANN, (KERN_WARNING | |
3719 | "megaraid: reject management request, detaching\n")); | |
3720 | return (-ENODEV); | |
3721 | } | |
3722 | ||
3723 | switch (kioc->opcode) { | |
3724 | ||
3725 | case GET_ADAP_INFO: | |
3726 | ||
3727 | kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) | |
3728 | (unsigned long)kioc->buf_vaddr); | |
3729 | ||
3730 | kioc->done(kioc); | |
3731 | ||
3732 | return kioc->status; | |
3733 | ||
3734 | case MBOX_CMD: | |
3735 | ||
3736 | return megaraid_mbox_mm_command(adapter, kioc); | |
3737 | ||
3738 | default: | |
3739 | kioc->status = (-EINVAL); | |
3740 | kioc->done(kioc); | |
3741 | return (-EINVAL); | |
3742 | } | |
3743 | ||
3744 | return 0; // not reached | |
3745 | } | |
3746 | ||
3747 | /** | |
3748 | * megaraid_mbox_mm_command - issues commands routed through CMM | |
3749 | * @param adapter : HBA soft state | |
3750 | * @param kioc : management command packet | |
3751 | * | |
3752 | * Issues commands, which are routed through the management module. | |
3753 | */ | |
3754 | static int | |
3755 | megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) | |
3756 | { | |
3757 | struct list_head *head = &adapter->uscb_pool; | |
3758 | mbox64_t *mbox64; | |
3759 | uint8_t *raw_mbox; | |
3760 | scb_t *scb; | |
3761 | mbox_ccb_t *ccb; | |
3762 | unsigned long flags; | |
3763 | ||
3764 | // detach one scb from free pool | |
3765 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3766 | ||
3767 | if (list_empty(head)) { // should never happen because of CMM | |
3768 | ||
3769 | con_log(CL_ANN, (KERN_WARNING | |
3770 | "megaraid mbox: bug in cmm handler, lost resources\n")); | |
3771 | ||
3772 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3773 | ||
3774 | return (-EINVAL); | |
3775 | } | |
3776 | ||
3777 | scb = list_entry(head->next, scb_t, list); | |
3778 | list_del_init(&scb->list); | |
3779 | ||
3780 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3781 | ||
3782 | scb->state = SCB_ACTIVE; | |
3783 | scb->dma_type = MRAID_DMA_NONE; | |
3784 | scb->dma_direction = PCI_DMA_NONE; | |
3785 | ||
3786 | ccb = (mbox_ccb_t *)scb->ccb; | |
3787 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
3788 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3789 | ||
3790 | memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); | |
3791 | ||
3792 | scb->gp = (unsigned long)kioc; | |
3793 | ||
3794 | /* | |
3795 | * If it is a logdrv random delete operation, we have to wait till | |
3796 | * there are no outstanding cmds at the fw and then issue it directly | |
3797 | */ | |
3798 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3799 | ||
3800 | if (wait_till_fw_empty(adapter)) { | |
3801 | con_log(CL_ANN, (KERN_NOTICE | |
3802 | "megaraid mbox: LD delete, timed out\n")); | |
3803 | ||
3804 | kioc->status = -ETIME; | |
3805 | ||
3806 | scb->status = -1; | |
3807 | ||
3808 | megaraid_mbox_mm_done(adapter, scb); | |
3809 | ||
3810 | return (-ETIME); | |
3811 | } | |
3812 | ||
3813 | INIT_LIST_HEAD(&scb->list); | |
3814 | ||
3815 | scb->state = SCB_ISSUED; | |
3816 | if (mbox_post_cmd(adapter, scb) != 0) { | |
3817 | ||
3818 | con_log(CL_ANN, (KERN_NOTICE | |
3819 | "megaraid mbox: LD delete, mailbox busy\n")); | |
3820 | ||
3821 | kioc->status = -EBUSY; | |
3822 | ||
3823 | scb->status = -1; | |
3824 | ||
3825 | megaraid_mbox_mm_done(adapter, scb); | |
3826 | ||
3827 | return (-EBUSY); | |
3828 | } | |
3829 | ||
3830 | return 0; | |
3831 | } | |
3832 | ||
3833 | // put the command on the pending list and execute | |
3834 | megaraid_mbox_runpendq(adapter, scb); | |
3835 | ||
3836 | return 0; | |
3837 | } | |
3838 | ||
3839 | ||
3840 | static int | |
3841 | wait_till_fw_empty(adapter_t *adapter) | |
3842 | { | |
3843 | unsigned long flags = 0; | |
3844 | int i; | |
3845 | ||
3846 | ||
3847 | /* | |
3848 | * Set the quiescent flag to stop issuing cmds to FW. | |
3849 | */ | |
3850 | spin_lock_irqsave(adapter->host_lock, flags); | |
3851 | adapter->quiescent++; | |
3852 | spin_unlock_irqrestore(adapter->host_lock, flags); | |
3853 | ||
3854 | /* | |
3855 | * Wait till there are no more cmds outstanding at FW. Try for at most | |
3856 | * 60 seconds | |
3857 | */ | |
3858 | for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { | |
3859 | con_log(CL_DLEVEL1, (KERN_INFO | |
3860 | "megaraid: FW has %d pending commands\n", | |
3861 | adapter->outstanding_cmds)); | |
3862 | ||
3863 | msleep(1000); | |
3864 | } | |
3865 | ||
3866 | return adapter->outstanding_cmds; | |
3867 | } | |
3868 | ||
3869 | ||
3870 | /** | |
3871 | * megaraid_mbox_mm_done - callback for CMM commands | |
3872 | * @adapter : HBA soft state | |
3873 | * @scb : completed command | |
3874 | * | |
3875 | * Callback routine for internal commands originated from the management | |
3876 | * module. | |
3877 | */ | |
3878 | static void | |
3879 | megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) | |
3880 | { | |
3881 | uioc_t *kioc; | |
3882 | mbox64_t *mbox64; | |
3883 | uint8_t *raw_mbox; | |
3884 | unsigned long flags; | |
3885 | ||
3886 | kioc = (uioc_t *)scb->gp; | |
3887 | kioc->status = 0; | |
3888 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
3889 | mbox64->mbox32.status = scb->status; | |
3890 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3891 | ||
3892 | ||
3893 | // put scb in the free pool | |
3894 | scb->state = SCB_FREE; | |
3895 | scb->scp = NULL; | |
3896 | ||
3897 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3898 | ||
3899 | list_add(&scb->list, &adapter->uscb_pool); | |
3900 | ||
3901 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3902 | ||
3903 | // if a delete logical drive operation succeeded, restart the | |
3904 | // controller | |
3905 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3906 | ||
3907 | adapter->quiescent--; | |
3908 | ||
3909 | megaraid_mbox_runpendq(adapter, NULL); | |
3910 | } | |
3911 | ||
3912 | kioc->done(kioc); | |
3913 | ||
3914 | return; | |
3915 | } | |
3916 | ||
3917 | ||
3918 | /** | |
3919 | * gather_hbainfo - HBA characteristics for the applications | |
3920 | * @param adapter : HBA soft state | |
3921 | * @param hinfo : pointer to the caller's host info strucuture | |
3922 | */ | |
3923 | static int | |
3924 | gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) | |
3925 | { | |
3926 | uint8_t dmajor; | |
3927 | ||
3928 | dmajor = megaraid_mbox_version[0]; | |
3929 | ||
3930 | hinfo->pci_vendor_id = adapter->pdev->vendor; | |
3931 | hinfo->pci_device_id = adapter->pdev->device; | |
3932 | hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; | |
3933 | hinfo->subsys_device_id = adapter->pdev->subsystem_device; | |
3934 | ||
3935 | hinfo->pci_bus = adapter->pdev->bus->number; | |
3936 | hinfo->pci_dev_fn = adapter->pdev->devfn; | |
3937 | hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); | |
3938 | hinfo->irq = adapter->host->irq; | |
3939 | hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; | |
3940 | ||
3941 | hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; | |
3942 | hinfo->host_no = adapter->host->host_no; | |
3943 | ||
3944 | return 0; | |
3945 | } | |
3946 | ||
3947 | /* | |
3948 | * END: Interface for the common management module | |
3949 | */ | |
3950 | ||
3951 | ||
3952 | ||
3953 | /** | |
3954 | * megaraid_sysfs_alloc_resources - allocate sysfs related resources | |
3955 | * | |
3956 | * Allocate packets required to issue FW calls whenever the sysfs attributes | |
3957 | * are read. These attributes would require up-to-date information from the | |
3958 | * FW. Also set up resources for mutual exclusion to share these resources and | |
3959 | * the wait queue. | |
3960 | * | |
3961 | * @param adapter : controller's soft state | |
3962 | * | |
3963 | * @return 0 on success | |
3964 | * @return -ERROR_CODE on failure | |
3965 | */ | |
3966 | static int | |
3967 | megaraid_sysfs_alloc_resources(adapter_t *adapter) | |
3968 | { | |
3969 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3970 | int rval = 0; | |
3971 | ||
3972 | raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); | |
3973 | ||
3974 | raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); | |
3975 | ||
3976 | raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev, | |
3977 | PAGE_SIZE, &raid_dev->sysfs_buffer_dma); | |
3978 | ||
3979 | if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || | |
3980 | !raid_dev->sysfs_buffer) { | |
3981 | ||
3982 | con_log(CL_ANN, (KERN_WARNING | |
3983 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
3984 | __LINE__)); | |
3985 | ||
3986 | rval = -ENOMEM; | |
3987 | ||
3988 | megaraid_sysfs_free_resources(adapter); | |
3989 | } | |
3990 | ||
3991 | sema_init(&raid_dev->sysfs_sem, 1); | |
3992 | ||
3993 | init_waitqueue_head(&raid_dev->sysfs_wait_q); | |
3994 | ||
3995 | return rval; | |
3996 | } | |
3997 | ||
3998 | ||
3999 | /** | |
4000 | * megaraid_sysfs_free_resources - free sysfs related resources | |
4001 | * | |
4002 | * Free packets allocated for sysfs FW commands | |
4003 | * | |
4004 | * @param adapter : controller's soft state | |
4005 | */ | |
4006 | static void | |
4007 | megaraid_sysfs_free_resources(adapter_t *adapter) | |
4008 | { | |
4009 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4010 | ||
4011 | if (raid_dev->sysfs_uioc) kfree(raid_dev->sysfs_uioc); | |
4012 | ||
4013 | if (raid_dev->sysfs_mbox64) kfree(raid_dev->sysfs_mbox64); | |
4014 | ||
4015 | if (raid_dev->sysfs_buffer) { | |
4016 | pci_free_consistent(adapter->pdev, PAGE_SIZE, | |
4017 | raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); | |
4018 | } | |
4019 | } | |
4020 | ||
4021 | ||
4022 | /** | |
4023 | * megaraid_sysfs_get_ldmap_done - callback for get ldmap | |
4024 | * | |
4025 | * Callback routine called in the ISR/tasklet context for get ldmap call | |
4026 | * | |
4027 | * @param uioc : completed packet | |
4028 | */ | |
4029 | static void | |
4030 | megaraid_sysfs_get_ldmap_done(uioc_t *uioc) | |
4031 | { | |
4032 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
4033 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4034 | ||
4035 | uioc->status = 0; | |
4036 | ||
4037 | wake_up(&raid_dev->sysfs_wait_q); | |
4038 | } | |
4039 | ||
4040 | ||
4041 | /** | |
4042 | * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap | |
4043 | * | |
4044 | * Timeout routine to recover and return to application, in case the adapter | |
4045 | * has stopped responding. A timeout of 60 seconds for this command seem like | |
4046 | * a good value | |
4047 | * | |
4048 | * @param uioc : timed out packet | |
4049 | */ | |
4050 | static void | |
4051 | megaraid_sysfs_get_ldmap_timeout(unsigned long data) | |
4052 | { | |
4053 | uioc_t *uioc = (uioc_t *)data; | |
4054 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
4055 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4056 | ||
4057 | uioc->status = -ETIME; | |
4058 | ||
4059 | wake_up(&raid_dev->sysfs_wait_q); | |
4060 | } | |
4061 | ||
4062 | ||
4063 | /** | |
4064 | * megaraid_sysfs_get_ldmap - get update logical drive map | |
4065 | * | |
4066 | * This routine will be called whenever user reads the logical drive | |
4067 | * attributes, go get the current logical drive mapping table from the | |
4068 | * firmware. We use the managment API's to issue commands to the controller. | |
4069 | * | |
4070 | * NOTE: The commands issuance functionality is not generalized and | |
4071 | * implemented in context of "get ld map" command only. If required, the | |
4072 | * command issuance logical can be trivially pulled out and implemented as a | |
4073 | * standalone libary. For now, this should suffice since there is no other | |
4074 | * user of this interface. | |
4075 | * | |
4076 | * @param adapter : controller's soft state | |
4077 | * | |
4078 | * @return 0 on success | |
4079 | * @return -1 on failure | |
4080 | */ | |
4081 | static int | |
4082 | megaraid_sysfs_get_ldmap(adapter_t *adapter) | |
4083 | { | |
4084 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4085 | uioc_t *uioc; | |
4086 | mbox64_t *mbox64; | |
4087 | mbox_t *mbox; | |
4088 | char *raw_mbox; | |
4089 | struct timer_list sysfs_timer; | |
4090 | struct timer_list *timerp; | |
4091 | caddr_t ldmap; | |
4092 | int rval = 0; | |
4093 | ||
4094 | /* | |
4095 | * Allow only one read at a time to go through the sysfs attributes | |
4096 | */ | |
4097 | down(&raid_dev->sysfs_sem); | |
4098 | ||
4099 | uioc = raid_dev->sysfs_uioc; | |
4100 | mbox64 = raid_dev->sysfs_mbox64; | |
4101 | ldmap = raid_dev->sysfs_buffer; | |
4102 | ||
4103 | memset(uioc, 0, sizeof(uioc_t)); | |
4104 | memset(mbox64, 0, sizeof(mbox64_t)); | |
4105 | memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); | |
4106 | ||
4107 | mbox = &mbox64->mbox32; | |
4108 | raw_mbox = (char *)mbox; | |
4109 | uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; | |
4110 | uioc->buf_vaddr = (caddr_t)adapter; | |
4111 | uioc->status = -ENODATA; | |
4112 | uioc->done = megaraid_sysfs_get_ldmap_done; | |
4113 | ||
4114 | /* | |
4115 | * Prepare the mailbox packet to get the current logical drive mapping | |
4116 | * table | |
4117 | */ | |
4118 | mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; | |
4119 | ||
4120 | raw_mbox[0] = FC_DEL_LOGDRV; | |
4121 | raw_mbox[2] = OP_GET_LDID_MAP; | |
4122 | ||
4123 | /* | |
4124 | * Setup a timer to recover from a non-responding controller | |
4125 | */ | |
4126 | timerp = &sysfs_timer; | |
4127 | init_timer(timerp); | |
4128 | ||
4129 | timerp->function = megaraid_sysfs_get_ldmap_timeout; | |
4130 | timerp->data = (unsigned long)uioc; | |
4131 | timerp->expires = jiffies + 60 * HZ; | |
4132 | ||
4133 | add_timer(timerp); | |
4134 | ||
4135 | /* | |
4136 | * Send the command to the firmware | |
4137 | */ | |
4138 | rval = megaraid_mbox_mm_command(adapter, uioc); | |
4139 | ||
4140 | if (rval == 0) { // command successfully issued | |
4141 | wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); | |
4142 | ||
4143 | /* | |
4144 | * Check if the command timed out | |
4145 | */ | |
4146 | if (uioc->status == -ETIME) { | |
4147 | con_log(CL_ANN, (KERN_NOTICE | |
4148 | "megaraid: sysfs get ld map timed out\n")); | |
4149 | ||
4150 | rval = -ETIME; | |
4151 | } | |
4152 | else { | |
4153 | rval = mbox->status; | |
4154 | } | |
4155 | ||
4156 | if (rval == 0) { | |
4157 | memcpy(raid_dev->curr_ldmap, ldmap, | |
4158 | sizeof(raid_dev->curr_ldmap)); | |
4159 | } | |
4160 | else { | |
4161 | con_log(CL_ANN, (KERN_NOTICE | |
4162 | "megaraid: get ld map failed with %x\n", rval)); | |
4163 | } | |
4164 | } | |
4165 | else { | |
4166 | con_log(CL_ANN, (KERN_NOTICE | |
4167 | "megaraid: could not issue ldmap command:%x\n", rval)); | |
4168 | } | |
4169 | ||
4170 | ||
4171 | del_timer_sync(timerp); | |
4172 | ||
4173 | up(&raid_dev->sysfs_sem); | |
4174 | ||
4175 | return rval; | |
4176 | } | |
4177 | ||
4178 | ||
4179 | /** | |
4180 | * megaraid_sysfs_show_app_hndl - display application handle for this adapter | |
4181 | * | |
4182 | * Display the handle used by the applications while executing management | |
4183 | * tasks on the adapter. We invoke a management module API to get the adapter | |
4184 | * handle, since we do not interface with applications directly. | |
4185 | * | |
4186 | * @param cdev : class device object representation for the host | |
4187 | * @param buf : buffer to send data to | |
4188 | */ | |
4189 | static ssize_t | |
4190 | megaraid_sysfs_show_app_hndl(struct class_device *cdev, char *buf) | |
4191 | { | |
4192 | struct Scsi_Host *shost = class_to_shost(cdev); | |
4193 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); | |
4194 | uint32_t app_hndl; | |
4195 | ||
4196 | app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); | |
4197 | ||
4198 | return snprintf(buf, 8, "%u\n", app_hndl); | |
4199 | } | |
4200 | ||
4201 | ||
4202 | /** | |
4203 | * megaraid_sysfs_show_ldnum - display the logical drive number for this device | |
4204 | * | |
4205 | * Display the logical drive number for the device in question, if it a valid | |
4206 | * logical drive. For physical devices, "-1" is returned | |
4207 | * The logical drive number is displayed in following format | |
4208 | * | |
4209 | * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> | |
4210 | * <int> <int> <int> <int> | |
4211 | * | |
4212 | * @param dev : device object representation for the scsi device | |
4213 | * @param buf : buffer to send data to | |
4214 | */ | |
4215 | static ssize_t | |
4216 | megaraid_sysfs_show_ldnum(struct device *dev, char *buf) | |
4217 | { | |
4218 | struct scsi_device *sdev = to_scsi_device(dev); | |
4219 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); | |
4220 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4221 | int scsi_id = -1; | |
4222 | int logical_drv = -1; | |
4223 | int ldid_map = -1; | |
4224 | uint32_t app_hndl = 0; | |
4225 | int mapped_sdev_id; | |
4226 | int rval; | |
4227 | int i; | |
4228 | ||
4229 | if (raid_dev->random_del_supported && | |
4230 | MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { | |
4231 | ||
4232 | rval = megaraid_sysfs_get_ldmap(adapter); | |
4233 | if (rval == 0) { | |
4234 | ||
4235 | for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { | |
4236 | ||
4237 | mapped_sdev_id = sdev->id; | |
4238 | ||
4239 | if (sdev->id > adapter->init_id) { | |
4240 | mapped_sdev_id -= 1; | |
4241 | } | |
4242 | ||
4243 | if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { | |
4244 | ||
4245 | scsi_id = sdev->id; | |
4246 | ||
4247 | logical_drv = i; | |
4248 | ||
4249 | ldid_map = raid_dev->curr_ldmap[i]; | |
4250 | ||
4251 | app_hndl = mraid_mm_adapter_app_handle( | |
4252 | adapter->unique_id); | |
4253 | ||
4254 | break; | |
4255 | } | |
4256 | } | |
4257 | } | |
4258 | else { | |
4259 | con_log(CL_ANN, (KERN_NOTICE | |
4260 | "megaraid: sysfs get ld map failed: %x\n", | |
4261 | rval)); | |
4262 | } | |
4263 | } | |
4264 | ||
4265 | return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, | |
4266 | ldid_map, app_hndl); | |
4267 | } | |
4268 | ||
4269 | ||
4270 | /* | |
4271 | * END: Mailbox Low Level Driver | |
4272 | */ | |
4273 | module_init(megaraid_init); | |
4274 | module_exit(megaraid_exit); | |
4275 | ||
4276 | /* vim: set ts=8 sw=8 tw=78 ai si: */ |