Commit | Line | Data |
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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 | |
cd96d96f | 13 | * Version : v2.20.5.1 (Nov 16 2006) |
1da177e4 LT |
14 | * |
15 | * Authors: | |
cd96d96f SP |
16 | * Atul Mukker <Atul.Mukker@lsi.com> |
17 | * Sreenivas Bagalkote <Sreenivas.Bagalkote@lsi.com> | |
18 | * Manoj Jose <Manoj.Jose@lsi.com> | |
19 | * Seokmann Ju | |
1da177e4 LT |
20 | * |
21 | * List of supported controllers | |
22 | * | |
23 | * OEM Product Name VID DID SSVID SSID | |
24 | * --- ------------ --- --- ---- ---- | |
25 | * Dell PERC3/QC 101E 1960 1028 0471 | |
26 | * Dell PERC3/DC 101E 1960 1028 0493 | |
27 | * Dell PERC3/SC 101E 1960 1028 0475 | |
28 | * Dell PERC3/Di 1028 1960 1028 0123 | |
29 | * Dell PERC4/SC 1000 1960 1028 0520 | |
30 | * Dell PERC4/DC 1000 1960 1028 0518 | |
31 | * Dell PERC4/QC 1000 0407 1028 0531 | |
32 | * Dell PERC4/Di 1028 000F 1028 014A | |
33 | * Dell PERC 4e/Si 1028 0013 1028 016c | |
34 | * Dell PERC 4e/Di 1028 0013 1028 016d | |
35 | * Dell PERC 4e/Di 1028 0013 1028 016e | |
36 | * Dell PERC 4e/Di 1028 0013 1028 016f | |
37 | * Dell PERC 4e/Di 1028 0013 1028 0170 | |
38 | * Dell PERC 4e/DC 1000 0408 1028 0002 | |
39 | * Dell PERC 4e/SC 1000 0408 1028 0001 | |
40 | * | |
41 | * | |
42 | * LSI MegaRAID SCSI 320-0 1000 1960 1000 A520 | |
43 | * LSI MegaRAID SCSI 320-1 1000 1960 1000 0520 | |
44 | * LSI MegaRAID SCSI 320-2 1000 1960 1000 0518 | |
45 | * LSI MegaRAID SCSI 320-0X 1000 0407 1000 0530 | |
46 | * LSI MegaRAID SCSI 320-2X 1000 0407 1000 0532 | |
47 | * LSI MegaRAID SCSI 320-4X 1000 0407 1000 0531 | |
48 | * LSI MegaRAID SCSI 320-1E 1000 0408 1000 0001 | |
49 | * LSI MegaRAID SCSI 320-2E 1000 0408 1000 0002 | |
50 | * LSI MegaRAID SATA 150-4 1000 1960 1000 4523 | |
51 | * LSI MegaRAID SATA 150-6 1000 1960 1000 0523 | |
52 | * LSI MegaRAID SATA 300-4X 1000 0409 1000 3004 | |
53 | * LSI MegaRAID SATA 300-8X 1000 0409 1000 3008 | |
54 | * | |
55 | * INTEL RAID Controller SRCU42X 1000 0407 8086 0532 | |
56 | * INTEL RAID Controller SRCS16 1000 1960 8086 0523 | |
57 | * INTEL RAID Controller SRCU42E 1000 0408 8086 0002 | |
58 | * INTEL RAID Controller SRCZCRX 1000 0407 8086 0530 | |
59 | * INTEL RAID Controller SRCS28X 1000 0409 8086 3008 | |
60 | * INTEL RAID Controller SROMBU42E 1000 0408 8086 3431 | |
61 | * INTEL RAID Controller SROMBU42E 1000 0408 8086 3499 | |
62 | * INTEL RAID Controller SRCU51L 1000 1960 8086 0520 | |
63 | * | |
64 | * FSC MegaRAID PCI Express ROMB 1000 0408 1734 1065 | |
65 | * | |
66 | * ACER MegaRAID ROMB-2E 1000 0408 1025 004D | |
67 | * | |
68 | * NEC MegaRAID PCI Express ROMB 1000 0408 1033 8287 | |
69 | * | |
70 | * For history of changes, see Documentation/ChangeLog.megaraid | |
71 | */ | |
72 | ||
73 | #include "megaraid_mbox.h" | |
74 | ||
75 | static int megaraid_init(void); | |
76 | static void megaraid_exit(void); | |
77 | ||
78 | static int megaraid_probe_one(struct pci_dev*, const struct pci_device_id *); | |
79 | static void megaraid_detach_one(struct pci_dev *); | |
5457b6a6 | 80 | static void megaraid_mbox_shutdown(struct pci_dev *); |
1da177e4 LT |
81 | |
82 | static int megaraid_io_attach(adapter_t *); | |
83 | static void megaraid_io_detach(adapter_t *); | |
84 | ||
85 | static int megaraid_init_mbox(adapter_t *); | |
86 | static void megaraid_fini_mbox(adapter_t *); | |
87 | ||
88 | static int megaraid_alloc_cmd_packets(adapter_t *); | |
89 | static void megaraid_free_cmd_packets(adapter_t *); | |
90 | ||
91 | static int megaraid_mbox_setup_dma_pools(adapter_t *); | |
92 | static void megaraid_mbox_teardown_dma_pools(adapter_t *); | |
93 | ||
94 | static int megaraid_sysfs_alloc_resources(adapter_t *); | |
95 | static void megaraid_sysfs_free_resources(adapter_t *); | |
96 | ||
97 | static int megaraid_abort_handler(struct scsi_cmnd *); | |
98 | static int megaraid_reset_handler(struct scsi_cmnd *); | |
99 | ||
100 | static int mbox_post_sync_cmd(adapter_t *, uint8_t []); | |
101 | static int mbox_post_sync_cmd_fast(adapter_t *, uint8_t []); | |
102 | static int megaraid_busywait_mbox(mraid_device_t *); | |
103 | static int megaraid_mbox_product_info(adapter_t *); | |
104 | static int megaraid_mbox_extended_cdb(adapter_t *); | |
105 | static int megaraid_mbox_support_ha(adapter_t *, uint16_t *); | |
106 | static int megaraid_mbox_support_random_del(adapter_t *); | |
107 | static int megaraid_mbox_get_max_sg(adapter_t *); | |
108 | static void megaraid_mbox_enum_raid_scsi(adapter_t *); | |
109 | static void megaraid_mbox_flush_cache(adapter_t *); | |
cd96d96f | 110 | static int megaraid_mbox_fire_sync_cmd(adapter_t *); |
1da177e4 LT |
111 | |
112 | static void megaraid_mbox_display_scb(adapter_t *, scb_t *); | |
113 | static void megaraid_mbox_setup_device_map(adapter_t *); | |
114 | ||
115 | static int megaraid_queue_command(struct scsi_cmnd *, | |
116 | void (*)(struct scsi_cmnd *)); | |
117 | static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *); | |
118 | static void megaraid_mbox_runpendq(adapter_t *, scb_t *); | |
119 | static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *, | |
120 | struct scsi_cmnd *); | |
121 | static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *, | |
122 | struct scsi_cmnd *); | |
123 | ||
7d12e780 | 124 | static irqreturn_t megaraid_isr(int, void *); |
1da177e4 LT |
125 | |
126 | static void megaraid_mbox_dpc(unsigned long); | |
127 | ||
ee959b00 | 128 | static ssize_t megaraid_sysfs_show_app_hndl(struct device *, struct device_attribute *attr, char *); |
10523b3b | 129 | static ssize_t megaraid_sysfs_show_ldnum(struct device *, struct device_attribute *attr, char *); |
1da177e4 LT |
130 | |
131 | static int megaraid_cmm_register(adapter_t *); | |
132 | static int megaraid_cmm_unregister(adapter_t *); | |
133 | static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t); | |
134 | static int megaraid_mbox_mm_command(adapter_t *, uioc_t *); | |
135 | static void megaraid_mbox_mm_done(adapter_t *, scb_t *); | |
136 | static int gather_hbainfo(adapter_t *, mraid_hba_info_t *); | |
137 | static int wait_till_fw_empty(adapter_t *); | |
138 | ||
139 | ||
140 | ||
cd96d96f | 141 | MODULE_AUTHOR("megaraidlinux@lsi.com"); |
1da177e4 LT |
142 | MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver"); |
143 | MODULE_LICENSE("GPL"); | |
144 | MODULE_VERSION(MEGARAID_VERSION); | |
145 | ||
146 | /* | |
147 | * ### modules parameters for driver ### | |
148 | */ | |
149 | ||
a69b74d3 | 150 | /* |
1da177e4 LT |
151 | * Set to enable driver to expose unconfigured disk to kernel |
152 | */ | |
153 | static int megaraid_expose_unconf_disks = 0; | |
154 | module_param_named(unconf_disks, megaraid_expose_unconf_disks, int, 0); | |
155 | MODULE_PARM_DESC(unconf_disks, | |
156 | "Set to expose unconfigured disks to kernel (default=0)"); | |
157 | ||
a69b74d3 | 158 | /* |
1da177e4 LT |
159 | * driver wait time if the adapter's mailbox is busy |
160 | */ | |
161 | static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT; | |
162 | module_param_named(busy_wait, max_mbox_busy_wait, int, 0); | |
163 | MODULE_PARM_DESC(busy_wait, | |
164 | "Max wait for mailbox in microseconds if busy (default=10)"); | |
165 | ||
a69b74d3 | 166 | /* |
1da177e4 LT |
167 | * number of sectors per IO command |
168 | */ | |
169 | static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS; | |
170 | module_param_named(max_sectors, megaraid_max_sectors, int, 0); | |
171 | MODULE_PARM_DESC(max_sectors, | |
172 | "Maximum number of sectors per IO command (default=128)"); | |
173 | ||
a69b74d3 | 174 | /* |
1da177e4 LT |
175 | * number of commands per logical unit |
176 | */ | |
177 | static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN; | |
178 | module_param_named(cmd_per_lun, megaraid_cmd_per_lun, int, 0); | |
179 | MODULE_PARM_DESC(cmd_per_lun, | |
180 | "Maximum number of commands per logical unit (default=64)"); | |
181 | ||
182 | ||
a69b74d3 | 183 | /* |
1da177e4 LT |
184 | * Fast driver load option, skip scanning for physical devices during load. |
185 | * This would result in non-disk devices being skipped during driver load | |
186 | * time. These can be later added though, using /proc/scsi/scsi | |
187 | */ | |
188 | static unsigned int megaraid_fast_load = 0; | |
189 | module_param_named(fast_load, megaraid_fast_load, int, 0); | |
190 | MODULE_PARM_DESC(fast_load, | |
191 | "Faster loading of the driver, skips physical devices! (default=0)"); | |
192 | ||
193 | ||
a69b74d3 | 194 | /* |
1da177e4 LT |
195 | * mraid_debug level - threshold for amount of information to be displayed by |
196 | * the driver. This level can be changed through modules parameters, ioctl or | |
197 | * sysfs/proc interface. By default, print the announcement messages only. | |
198 | */ | |
199 | int mraid_debug_level = CL_ANN; | |
200 | module_param_named(debug_level, mraid_debug_level, int, 0); | |
201 | MODULE_PARM_DESC(debug_level, "Debug level for driver (default=0)"); | |
202 | ||
203 | /* | |
204 | * ### global data ### | |
205 | */ | |
206 | static uint8_t megaraid_mbox_version[8] = | |
672b2d38 | 207 | { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 }; |
1da177e4 LT |
208 | |
209 | ||
210 | /* | |
211 | * PCI table for all supported controllers. | |
212 | */ | |
213 | static struct pci_device_id pci_id_table_g[] = { | |
214 | { | |
215 | PCI_VENDOR_ID_DELL, | |
216 | PCI_DEVICE_ID_PERC4_DI_DISCOVERY, | |
217 | PCI_VENDOR_ID_DELL, | |
218 | PCI_SUBSYS_ID_PERC4_DI_DISCOVERY, | |
219 | }, | |
220 | { | |
221 | PCI_VENDOR_ID_LSI_LOGIC, | |
222 | PCI_DEVICE_ID_PERC4_SC, | |
223 | PCI_VENDOR_ID_DELL, | |
224 | PCI_SUBSYS_ID_PERC4_SC, | |
225 | }, | |
226 | { | |
227 | PCI_VENDOR_ID_LSI_LOGIC, | |
228 | PCI_DEVICE_ID_PERC4_DC, | |
229 | PCI_VENDOR_ID_DELL, | |
230 | PCI_SUBSYS_ID_PERC4_DC, | |
231 | }, | |
232 | { | |
233 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
234 | PCI_DEVICE_ID_VERDE, |
235 | PCI_ANY_ID, | |
236 | PCI_ANY_ID, | |
1da177e4 LT |
237 | }, |
238 | { | |
239 | PCI_VENDOR_ID_DELL, | |
240 | PCI_DEVICE_ID_PERC4_DI_EVERGLADES, | |
241 | PCI_VENDOR_ID_DELL, | |
242 | PCI_SUBSYS_ID_PERC4_DI_EVERGLADES, | |
243 | }, | |
244 | { | |
245 | PCI_VENDOR_ID_DELL, | |
246 | PCI_DEVICE_ID_PERC4E_SI_BIGBEND, | |
247 | PCI_VENDOR_ID_DELL, | |
248 | PCI_SUBSYS_ID_PERC4E_SI_BIGBEND, | |
249 | }, | |
250 | { | |
251 | PCI_VENDOR_ID_DELL, | |
252 | PCI_DEVICE_ID_PERC4E_DI_KOBUK, | |
253 | PCI_VENDOR_ID_DELL, | |
254 | PCI_SUBSYS_ID_PERC4E_DI_KOBUK, | |
255 | }, | |
256 | { | |
257 | PCI_VENDOR_ID_DELL, | |
258 | PCI_DEVICE_ID_PERC4E_DI_CORVETTE, | |
259 | PCI_VENDOR_ID_DELL, | |
260 | PCI_SUBSYS_ID_PERC4E_DI_CORVETTE, | |
261 | }, | |
262 | { | |
263 | PCI_VENDOR_ID_DELL, | |
264 | PCI_DEVICE_ID_PERC4E_DI_EXPEDITION, | |
265 | PCI_VENDOR_ID_DELL, | |
266 | PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION, | |
267 | }, | |
268 | { | |
269 | PCI_VENDOR_ID_DELL, | |
270 | PCI_DEVICE_ID_PERC4E_DI_GUADALUPE, | |
271 | PCI_VENDOR_ID_DELL, | |
272 | PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE, | |
273 | }, | |
274 | { | |
275 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
276 | PCI_DEVICE_ID_DOBSON, |
277 | PCI_ANY_ID, | |
278 | PCI_ANY_ID, | |
1da177e4 LT |
279 | }, |
280 | { | |
281 | PCI_VENDOR_ID_AMI, | |
282 | PCI_DEVICE_ID_AMI_MEGARAID3, | |
ed7e8ef7 JS |
283 | PCI_ANY_ID, |
284 | PCI_ANY_ID, | |
1da177e4 LT |
285 | }, |
286 | { | |
287 | PCI_VENDOR_ID_LSI_LOGIC, | |
ed7e8ef7 JS |
288 | PCI_DEVICE_ID_AMI_MEGARAID3, |
289 | PCI_ANY_ID, | |
290 | PCI_ANY_ID, | |
1da177e4 LT |
291 | }, |
292 | { | |
293 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
294 | PCI_DEVICE_ID_LINDSAY, |
295 | PCI_ANY_ID, | |
296 | PCI_ANY_ID, | |
1da177e4 | 297 | }, |
1da177e4 LT |
298 | {0} /* Terminating entry */ |
299 | }; | |
300 | MODULE_DEVICE_TABLE(pci, pci_id_table_g); | |
301 | ||
302 | ||
382db811 | 303 | static struct pci_driver megaraid_pci_driver = { |
1da177e4 LT |
304 | .name = "megaraid", |
305 | .id_table = pci_id_table_g, | |
306 | .probe = megaraid_probe_one, | |
307 | .remove = __devexit_p(megaraid_detach_one), | |
5457b6a6 | 308 | .shutdown = megaraid_mbox_shutdown, |
1da177e4 LT |
309 | }; |
310 | ||
311 | ||
312 | ||
313 | // definitions for the device attributes for exporting logical drive number | |
314 | // for a scsi address (Host, Channel, Id, Lun) | |
315 | ||
ee959b00 | 316 | DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl, |
1da177e4 LT |
317 | NULL); |
318 | ||
319 | // Host template initializer for megaraid mbox sysfs device attributes | |
ee959b00 TJ |
320 | static struct device_attribute *megaraid_shost_attrs[] = { |
321 | &dev_attr_megaraid_mbox_app_hndl, | |
1da177e4 LT |
322 | NULL, |
323 | }; | |
324 | ||
325 | ||
326 | DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL); | |
327 | ||
328 | // Host template initializer for megaraid mbox sysfs device attributes | |
329 | static struct device_attribute *megaraid_sdev_attrs[] = { | |
330 | &dev_attr_megaraid_mbox_ld, | |
331 | NULL, | |
332 | }; | |
333 | ||
f4c8aa11 | 334 | /** |
335 | * megaraid_change_queue_depth - Change the device's queue depth | |
336 | * @sdev: scsi device struct | |
337 | * @qdepth: depth to set | |
338 | * | |
339 | * Return value: | |
340 | * actual depth set | |
a69b74d3 | 341 | */ |
f4c8aa11 | 342 | static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth) |
343 | { | |
344 | if (qdepth > MBOX_MAX_SCSI_CMDS) | |
345 | qdepth = MBOX_MAX_SCSI_CMDS; | |
346 | scsi_adjust_queue_depth(sdev, 0, qdepth); | |
347 | return sdev->queue_depth; | |
348 | } | |
1da177e4 LT |
349 | |
350 | /* | |
351 | * Scsi host template for megaraid unified driver | |
352 | */ | |
353 | static struct scsi_host_template megaraid_template_g = { | |
354 | .module = THIS_MODULE, | |
355 | .name = "LSI Logic MegaRAID driver", | |
356 | .proc_name = "megaraid", | |
357 | .queuecommand = megaraid_queue_command, | |
358 | .eh_abort_handler = megaraid_abort_handler, | |
359 | .eh_device_reset_handler = megaraid_reset_handler, | |
360 | .eh_bus_reset_handler = megaraid_reset_handler, | |
361 | .eh_host_reset_handler = megaraid_reset_handler, | |
f4c8aa11 | 362 | .change_queue_depth = megaraid_change_queue_depth, |
1da177e4 LT |
363 | .use_clustering = ENABLE_CLUSTERING, |
364 | .sdev_attrs = megaraid_sdev_attrs, | |
365 | .shost_attrs = megaraid_shost_attrs, | |
366 | }; | |
367 | ||
368 | ||
369 | /** | |
370 | * megaraid_init - module load hook | |
371 | * | |
372 | * We register ourselves as hotplug enabled module and let PCI subsystem | |
a69b74d3 RD |
373 | * discover our adapters. |
374 | */ | |
1da177e4 LT |
375 | static int __init |
376 | megaraid_init(void) | |
377 | { | |
378 | int rval; | |
379 | ||
380 | // Announce the driver version | |
381 | con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION, | |
382 | MEGARAID_EXT_VERSION)); | |
383 | ||
384 | // check validity of module parameters | |
385 | if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) { | |
386 | ||
387 | con_log(CL_ANN, (KERN_WARNING | |
388 | "megaraid mailbox: max commands per lun reset to %d\n", | |
389 | MBOX_MAX_SCSI_CMDS)); | |
390 | ||
391 | megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS; | |
392 | } | |
393 | ||
394 | ||
395 | // register as a PCI hot-plug driver module | |
382db811 | 396 | rval = pci_register_driver(&megaraid_pci_driver); |
672b2d38 | 397 | if (rval < 0) { |
1da177e4 LT |
398 | con_log(CL_ANN, (KERN_WARNING |
399 | "megaraid: could not register hotplug support.\n")); | |
400 | } | |
401 | ||
402 | return rval; | |
403 | } | |
404 | ||
405 | ||
406 | /** | |
407 | * megaraid_exit - driver unload entry point | |
408 | * | |
a69b74d3 | 409 | * We simply unwrap the megaraid_init routine here. |
1da177e4 LT |
410 | */ |
411 | static void __exit | |
412 | megaraid_exit(void) | |
413 | { | |
414 | con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n")); | |
415 | ||
416 | // unregister as PCI hotplug driver | |
382db811 | 417 | pci_unregister_driver(&megaraid_pci_driver); |
1da177e4 LT |
418 | |
419 | return; | |
420 | } | |
421 | ||
422 | ||
423 | /** | |
424 | * megaraid_probe_one - PCI hotplug entry point | |
a69b74d3 RD |
425 | * @pdev : handle to this controller's PCI configuration space |
426 | * @id : pci device id of the class of controllers | |
1da177e4 LT |
427 | * |
428 | * This routine should be called whenever a new adapter is detected by the | |
3a4fa0a2 | 429 | * PCI hotplug susbsystem. |
a69b74d3 | 430 | */ |
1da177e4 LT |
431 | static int __devinit |
432 | megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) | |
433 | { | |
434 | adapter_t *adapter; | |
435 | ||
436 | ||
437 | // detected a new controller | |
438 | con_log(CL_ANN, (KERN_INFO | |
439 | "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", | |
440 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
441 | pdev->subsystem_device)); | |
442 | ||
443 | con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number, | |
444 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn))); | |
445 | ||
446 | if (pci_enable_device(pdev)) { | |
447 | con_log(CL_ANN, (KERN_WARNING | |
448 | "megaraid: pci_enable_device failed\n")); | |
449 | ||
450 | return -ENODEV; | |
451 | } | |
452 | ||
453 | // Enable bus-mastering on this controller | |
454 | pci_set_master(pdev); | |
455 | ||
456 | // Allocate the per driver initialization structure | |
dd00cc48 | 457 | adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL); |
1da177e4 LT |
458 | |
459 | if (adapter == NULL) { | |
460 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 461 | "megaraid: out of memory, %s %d.\n", __func__, __LINE__)); |
1da177e4 LT |
462 | |
463 | goto out_probe_one; | |
464 | } | |
1da177e4 LT |
465 | |
466 | ||
467 | // set up PCI related soft state and other pre-known parameters | |
468 | adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
469 | adapter->irq = pdev->irq; | |
470 | adapter->pdev = pdev; | |
471 | ||
472 | atomic_set(&adapter->being_detached, 0); | |
473 | ||
474 | // Setup the default DMA mask. This would be changed later on | |
475 | // depending on hardware capabilities | |
284901a9 | 476 | if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(32)) != 0) { |
1da177e4 LT |
477 | |
478 | con_log(CL_ANN, (KERN_WARNING | |
479 | "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); | |
480 | ||
481 | goto out_free_adapter; | |
482 | } | |
483 | ||
484 | ||
485 | // Initialize the synchronization lock for kernel and LLD | |
486 | spin_lock_init(&adapter->lock); | |
1da177e4 LT |
487 | |
488 | // Initialize the command queues: the list of free SCBs and the list | |
489 | // of pending SCBs. | |
490 | INIT_LIST_HEAD(&adapter->kscb_pool); | |
491 | spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); | |
492 | ||
493 | INIT_LIST_HEAD(&adapter->pend_list); | |
494 | spin_lock_init(PENDING_LIST_LOCK(adapter)); | |
495 | ||
496 | INIT_LIST_HEAD(&adapter->completed_list); | |
497 | spin_lock_init(COMPLETED_LIST_LOCK(adapter)); | |
498 | ||
499 | ||
500 | // Start the mailbox based controller | |
501 | if (megaraid_init_mbox(adapter) != 0) { | |
502 | con_log(CL_ANN, (KERN_WARNING | |
503 | "megaraid: maibox adapter did not initialize\n")); | |
504 | ||
505 | goto out_free_adapter; | |
506 | } | |
507 | ||
508 | // Register with LSI Common Management Module | |
509 | if (megaraid_cmm_register(adapter) != 0) { | |
510 | ||
511 | con_log(CL_ANN, (KERN_WARNING | |
512 | "megaraid: could not register with management module\n")); | |
513 | ||
514 | goto out_fini_mbox; | |
515 | } | |
516 | ||
517 | // setup adapter handle in PCI soft state | |
518 | pci_set_drvdata(pdev, adapter); | |
519 | ||
520 | // attach with scsi mid-layer | |
521 | if (megaraid_io_attach(adapter) != 0) { | |
522 | ||
523 | con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); | |
524 | ||
525 | goto out_cmm_unreg; | |
526 | } | |
527 | ||
528 | return 0; | |
529 | ||
530 | out_cmm_unreg: | |
531 | pci_set_drvdata(pdev, NULL); | |
532 | megaraid_cmm_unregister(adapter); | |
533 | out_fini_mbox: | |
534 | megaraid_fini_mbox(adapter); | |
535 | out_free_adapter: | |
536 | kfree(adapter); | |
537 | out_probe_one: | |
538 | pci_disable_device(pdev); | |
539 | ||
540 | return -ENODEV; | |
541 | } | |
542 | ||
543 | ||
544 | /** | |
a69b74d3 RD |
545 | * megaraid_detach_one - release framework resources and call LLD release routine |
546 | * @pdev : handle for our PCI cofiguration space | |
1da177e4 LT |
547 | * |
548 | * This routine is called during driver unload. We free all the allocated | |
549 | * resources and call the corresponding LLD so that it can also release all | |
550 | * its resources. | |
551 | * | |
a69b74d3 RD |
552 | * This routine is also called from the PCI hotplug system. |
553 | */ | |
1da177e4 LT |
554 | static void |
555 | megaraid_detach_one(struct pci_dev *pdev) | |
556 | { | |
557 | adapter_t *adapter; | |
558 | struct Scsi_Host *host; | |
559 | ||
560 | ||
561 | // Start a rollback on this adapter | |
562 | adapter = pci_get_drvdata(pdev); | |
563 | ||
564 | if (!adapter) { | |
565 | con_log(CL_ANN, (KERN_CRIT | |
566 | "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
567 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
568 | pdev->subsystem_device)); | |
569 | ||
570 | return; | |
571 | } | |
572 | else { | |
573 | con_log(CL_ANN, (KERN_NOTICE | |
574 | "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
575 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
576 | pdev->subsystem_device)); | |
577 | } | |
578 | ||
579 | ||
580 | host = adapter->host; | |
581 | ||
582 | // do not allow any more requests from the management module for this | |
583 | // adapter. | |
584 | // FIXME: How do we account for the request which might still be | |
585 | // pending with us? | |
586 | atomic_set(&adapter->being_detached, 1); | |
587 | ||
588 | // detach from the IO sub-system | |
589 | megaraid_io_detach(adapter); | |
590 | ||
591 | // reset the device state in the PCI structure. We check this | |
592 | // condition when we enter here. If the device state is NULL, | |
593 | // that would mean the device has already been removed | |
594 | pci_set_drvdata(pdev, NULL); | |
595 | ||
596 | // Unregister from common management module | |
597 | // | |
598 | // FIXME: this must return success or failure for conditions if there | |
599 | // is a command pending with LLD or not. | |
600 | megaraid_cmm_unregister(adapter); | |
601 | ||
602 | // finalize the mailbox based controller and release all resources | |
603 | megaraid_fini_mbox(adapter); | |
604 | ||
605 | kfree(adapter); | |
606 | ||
607 | scsi_host_put(host); | |
608 | ||
609 | pci_disable_device(pdev); | |
610 | ||
611 | return; | |
612 | } | |
613 | ||
614 | ||
615 | /** | |
616 | * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA | |
a69b74d3 | 617 | * @pdev : generic driver model device |
1da177e4 | 618 | * |
a69b74d3 | 619 | * Shutdown notification, perform flush cache. |
1da177e4 LT |
620 | */ |
621 | static void | |
5457b6a6 | 622 | megaraid_mbox_shutdown(struct pci_dev *pdev) |
1da177e4 | 623 | { |
5457b6a6 | 624 | adapter_t *adapter = pci_get_drvdata(pdev); |
1da177e4 LT |
625 | static int counter; |
626 | ||
627 | if (!adapter) { | |
628 | con_log(CL_ANN, (KERN_WARNING | |
629 | "megaraid: null device in shutdown\n")); | |
630 | return; | |
631 | } | |
632 | ||
633 | // flush caches now | |
634 | con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", | |
635 | counter++)); | |
636 | ||
637 | megaraid_mbox_flush_cache(adapter); | |
638 | ||
639 | con_log(CL_ANN, ("done\n")); | |
640 | } | |
641 | ||
642 | ||
643 | /** | |
644 | * megaraid_io_attach - attach a device with the IO subsystem | |
a69b74d3 | 645 | * @adapter : controller's soft state |
1da177e4 | 646 | * |
a69b74d3 RD |
647 | * Attach this device with the IO subsystem. |
648 | */ | |
1da177e4 LT |
649 | static int |
650 | megaraid_io_attach(adapter_t *adapter) | |
651 | { | |
652 | struct Scsi_Host *host; | |
653 | ||
654 | // Initialize SCSI Host structure | |
655 | host = scsi_host_alloc(&megaraid_template_g, 8); | |
656 | if (!host) { | |
657 | con_log(CL_ANN, (KERN_WARNING | |
658 | "megaraid mbox: scsi_register failed\n")); | |
659 | ||
660 | return -1; | |
661 | } | |
662 | ||
663 | SCSIHOST2ADAP(host) = (caddr_t)adapter; | |
664 | adapter->host = host; | |
665 | ||
1da177e4 LT |
666 | host->irq = adapter->irq; |
667 | host->unique_id = adapter->unique_id; | |
668 | host->can_queue = adapter->max_cmds; | |
669 | host->this_id = adapter->init_id; | |
670 | host->sg_tablesize = adapter->sglen; | |
671 | host->max_sectors = adapter->max_sectors; | |
672 | host->cmd_per_lun = adapter->cmd_per_lun; | |
673 | host->max_channel = adapter->max_channel; | |
674 | host->max_id = adapter->max_target; | |
675 | host->max_lun = adapter->max_lun; | |
676 | ||
677 | ||
678 | // notify mid-layer about the new controller | |
679 | if (scsi_add_host(host, &adapter->pdev->dev)) { | |
680 | ||
681 | con_log(CL_ANN, (KERN_WARNING | |
682 | "megaraid mbox: scsi_add_host failed\n")); | |
683 | ||
684 | scsi_host_put(host); | |
685 | ||
686 | return -1; | |
687 | } | |
688 | ||
689 | scsi_scan_host(host); | |
690 | ||
691 | return 0; | |
692 | } | |
693 | ||
694 | ||
695 | /** | |
696 | * megaraid_io_detach - detach a device from the IO subsystem | |
a69b74d3 | 697 | * @adapter : controller's soft state |
1da177e4 | 698 | * |
a69b74d3 RD |
699 | * Detach this device from the IO subsystem. |
700 | */ | |
1da177e4 LT |
701 | static void |
702 | megaraid_io_detach(adapter_t *adapter) | |
703 | { | |
704 | struct Scsi_Host *host; | |
705 | ||
706 | con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); | |
707 | ||
708 | host = adapter->host; | |
709 | ||
710 | scsi_remove_host(host); | |
711 | ||
712 | return; | |
713 | } | |
714 | ||
715 | ||
716 | /* | |
717 | * START: Mailbox Low Level Driver | |
718 | * | |
719 | * This is section specific to the single mailbox based controllers | |
720 | */ | |
721 | ||
722 | /** | |
723 | * megaraid_init_mbox - initialize controller | |
a69b74d3 | 724 | * @adapter : our soft state |
1da177e4 | 725 | * |
a69b74d3 RD |
726 | * - Allocate 16-byte aligned mailbox memory for firmware handshake |
727 | * - Allocate controller's memory resources | |
728 | * - Find out all initialization data | |
729 | * - Allocate memory required for all the commands | |
730 | * - Use internal library of FW routines, build up complete soft state | |
1da177e4 | 731 | */ |
cedfb178 | 732 | static int __devinit |
1da177e4 LT |
733 | megaraid_init_mbox(adapter_t *adapter) |
734 | { | |
735 | struct pci_dev *pdev; | |
736 | mraid_device_t *raid_dev; | |
737 | int i; | |
fbf60802 | 738 | uint32_t magic64; |
1da177e4 LT |
739 | |
740 | ||
741 | adapter->ito = MBOX_TIMEOUT; | |
742 | pdev = adapter->pdev; | |
743 | ||
744 | /* | |
745 | * Allocate and initialize the init data structure for mailbox | |
746 | * controllers | |
747 | */ | |
dd00cc48 | 748 | raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL); |
1da177e4 LT |
749 | if (raid_dev == NULL) return -1; |
750 | ||
1da177e4 LT |
751 | |
752 | /* | |
753 | * Attach the adapter soft state to raid device soft state | |
754 | */ | |
755 | adapter->raid_device = (caddr_t)raid_dev; | |
756 | raid_dev->fast_load = megaraid_fast_load; | |
757 | ||
758 | ||
759 | // our baseport | |
760 | raid_dev->baseport = pci_resource_start(pdev, 0); | |
761 | ||
762 | if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { | |
763 | ||
764 | con_log(CL_ANN, (KERN_WARNING | |
765 | "megaraid: mem region busy\n")); | |
766 | ||
767 | goto out_free_raid_dev; | |
768 | } | |
769 | ||
770 | raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); | |
771 | ||
772 | if (!raid_dev->baseaddr) { | |
773 | ||
774 | con_log(CL_ANN, (KERN_WARNING | |
775 | "megaraid: could not map hba memory\n") ); | |
776 | ||
777 | goto out_release_regions; | |
778 | } | |
779 | ||
cd96d96f SP |
780 | /* initialize the mutual exclusion lock for the mailbox */ |
781 | spin_lock_init(&raid_dev->mailbox_lock); | |
782 | ||
783 | /* allocate memory required for commands */ | |
784 | if (megaraid_alloc_cmd_packets(adapter) != 0) | |
785 | goto out_iounmap; | |
1da177e4 | 786 | |
cd96d96f SP |
787 | /* |
788 | * Issue SYNC cmd to flush the pending cmds in the adapter | |
789 | * and initialize its internal state | |
790 | */ | |
791 | ||
792 | if (megaraid_mbox_fire_sync_cmd(adapter)) | |
793 | con_log(CL_ANN, ("megaraid: sync cmd failed\n")); | |
794 | ||
795 | /* | |
796 | * Setup the rest of the soft state using the library of | |
797 | * FW routines | |
798 | */ | |
799 | ||
800 | /* request IRQ and register the interrupt service routine */ | |
1d6f359a | 801 | if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid", |
1da177e4 LT |
802 | adapter)) { |
803 | ||
804 | con_log(CL_ANN, (KERN_WARNING | |
805 | "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); | |
cd96d96f | 806 | goto out_alloc_cmds; |
1da177e4 | 807 | |
1da177e4 LT |
808 | } |
809 | ||
810 | // Product info | |
cd96d96f SP |
811 | if (megaraid_mbox_product_info(adapter) != 0) |
812 | goto out_free_irq; | |
1da177e4 LT |
813 | |
814 | // Do we support extended CDBs | |
815 | adapter->max_cdb_sz = 10; | |
816 | if (megaraid_mbox_extended_cdb(adapter) == 0) { | |
817 | adapter->max_cdb_sz = 16; | |
818 | } | |
819 | ||
820 | /* | |
821 | * Do we support cluster environment, if we do, what is the initiator | |
822 | * id. | |
823 | * NOTE: In a non-cluster aware firmware environment, the LLD should | |
824 | * return 7 as initiator id. | |
825 | */ | |
826 | adapter->ha = 0; | |
827 | adapter->init_id = -1; | |
828 | if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { | |
829 | adapter->ha = 1; | |
830 | } | |
831 | ||
832 | /* | |
833 | * Prepare the device ids array to have the mapping between the kernel | |
834 | * device address and megaraid device address. | |
835 | * We export the physical devices on their actual addresses. The | |
836 | * logical drives are exported on a virtual SCSI channel | |
837 | */ | |
838 | megaraid_mbox_setup_device_map(adapter); | |
839 | ||
840 | // If the firmware supports random deletion, update the device id map | |
841 | if (megaraid_mbox_support_random_del(adapter)) { | |
842 | ||
843 | // Change the logical drives numbers in device_ids array one | |
844 | // slot in device_ids is reserved for target id, that's why | |
845 | // "<=" below | |
846 | for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { | |
847 | adapter->device_ids[adapter->max_channel][i] += 0x80; | |
848 | } | |
849 | adapter->device_ids[adapter->max_channel][adapter->init_id] = | |
850 | 0xFF; | |
851 | ||
852 | raid_dev->random_del_supported = 1; | |
853 | } | |
854 | ||
855 | /* | |
856 | * find out the maximum number of scatter-gather elements supported by | |
857 | * this firmware | |
858 | */ | |
859 | adapter->sglen = megaraid_mbox_get_max_sg(adapter); | |
860 | ||
861 | // enumerate RAID and SCSI channels so that all devices on SCSI | |
862 | // channels can later be exported, including disk devices | |
863 | megaraid_mbox_enum_raid_scsi(adapter); | |
864 | ||
865 | /* | |
866 | * Other parameters required by upper layer | |
867 | * | |
868 | * maximum number of sectors per IO command | |
869 | */ | |
870 | adapter->max_sectors = megaraid_max_sectors; | |
871 | ||
872 | /* | |
873 | * number of queued commands per LUN. | |
874 | */ | |
875 | adapter->cmd_per_lun = megaraid_cmd_per_lun; | |
876 | ||
877 | /* | |
878 | * Allocate resources required to issue FW calls, when sysfs is | |
879 | * accessed | |
880 | */ | |
cd96d96f SP |
881 | if (megaraid_sysfs_alloc_resources(adapter) != 0) |
882 | goto out_free_irq; | |
1da177e4 LT |
883 | |
884 | // Set the DMA mask to 64-bit. All supported controllers as capable of | |
885 | // DMA in this range | |
fbf60802 JS |
886 | pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64); |
887 | ||
888 | if (((magic64 == HBA_SIGNATURE_64_BIT) && | |
889 | ((adapter->pdev->subsystem_device != | |
8741ca71 | 890 | PCI_SUBSYS_ID_MEGARAID_SATA_150_6) && |
fbf60802 JS |
891 | (adapter->pdev->subsystem_device != |
892 | PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) || | |
893 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
894 | adapter->pdev->device == PCI_DEVICE_ID_VERDE) || | |
895 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
896 | adapter->pdev->device == PCI_DEVICE_ID_DOBSON) || | |
897 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
898 | adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) || | |
899 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
900 | adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) || | |
901 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
902 | adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) { | |
6a35528a | 903 | if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(64))) { |
fbf60802 JS |
904 | con_log(CL_ANN, (KERN_WARNING |
905 | "megaraid: DMA mask for 64-bit failed\n")); | |
906 | ||
284901a9 | 907 | if (pci_set_dma_mask (adapter->pdev, DMA_BIT_MASK(32))) { |
fbf60802 JS |
908 | con_log(CL_ANN, (KERN_WARNING |
909 | "megaraid: 32-bit DMA mask failed\n")); | |
910 | goto out_free_sysfs_res; | |
911 | } | |
912 | } | |
1da177e4 LT |
913 | } |
914 | ||
915 | // setup tasklet for DPC | |
916 | tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, | |
917 | (unsigned long)adapter); | |
918 | ||
919 | con_log(CL_DLEVEL1, (KERN_INFO | |
920 | "megaraid mbox hba successfully initialized\n")); | |
921 | ||
922 | return 0; | |
923 | ||
924 | out_free_sysfs_res: | |
925 | megaraid_sysfs_free_resources(adapter); | |
1da177e4 LT |
926 | out_free_irq: |
927 | free_irq(adapter->irq, adapter); | |
cd96d96f SP |
928 | out_alloc_cmds: |
929 | megaraid_free_cmd_packets(adapter); | |
1da177e4 LT |
930 | out_iounmap: |
931 | iounmap(raid_dev->baseaddr); | |
932 | out_release_regions: | |
933 | pci_release_regions(pdev); | |
934 | out_free_raid_dev: | |
935 | kfree(raid_dev); | |
936 | ||
937 | return -1; | |
938 | } | |
939 | ||
940 | ||
941 | /** | |
942 | * megaraid_fini_mbox - undo controller initialization | |
a69b74d3 | 943 | * @adapter : our soft state |
1da177e4 LT |
944 | */ |
945 | static void | |
946 | megaraid_fini_mbox(adapter_t *adapter) | |
947 | { | |
948 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
949 | ||
950 | // flush all caches | |
951 | megaraid_mbox_flush_cache(adapter); | |
952 | ||
953 | tasklet_kill(&adapter->dpc_h); | |
954 | ||
955 | megaraid_sysfs_free_resources(adapter); | |
956 | ||
957 | megaraid_free_cmd_packets(adapter); | |
958 | ||
959 | free_irq(adapter->irq, adapter); | |
960 | ||
961 | iounmap(raid_dev->baseaddr); | |
962 | ||
963 | pci_release_regions(adapter->pdev); | |
964 | ||
965 | kfree(raid_dev); | |
966 | ||
967 | return; | |
968 | } | |
969 | ||
970 | ||
971 | /** | |
972 | * megaraid_alloc_cmd_packets - allocate shared mailbox | |
a69b74d3 | 973 | * @adapter : soft state of the raid controller |
1da177e4 LT |
974 | * |
975 | * Allocate and align the shared mailbox. This maibox is used to issue | |
976 | * all the commands. For IO based controllers, the mailbox is also regsitered | |
977 | * with the FW. Allocate memory for all commands as well. | |
a69b74d3 | 978 | * This is our big allocator. |
1da177e4 LT |
979 | */ |
980 | static int | |
981 | megaraid_alloc_cmd_packets(adapter_t *adapter) | |
982 | { | |
983 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
984 | struct pci_dev *pdev; | |
985 | unsigned long align; | |
986 | scb_t *scb; | |
987 | mbox_ccb_t *ccb; | |
988 | struct mraid_pci_blk *epthru_pci_blk; | |
989 | struct mraid_pci_blk *sg_pci_blk; | |
990 | struct mraid_pci_blk *mbox_pci_blk; | |
991 | int i; | |
992 | ||
993 | pdev = adapter->pdev; | |
994 | ||
995 | /* | |
996 | * Setup the mailbox | |
997 | * Allocate the common 16-byte aligned memory for the handshake | |
998 | * mailbox. | |
999 | */ | |
1000 | raid_dev->una_mbox64 = pci_alloc_consistent(adapter->pdev, | |
1001 | sizeof(mbox64_t), &raid_dev->una_mbox64_dma); | |
1002 | ||
1003 | if (!raid_dev->una_mbox64) { | |
1004 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1005 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1006 | __LINE__)); |
1007 | return -1; | |
1008 | } | |
1009 | memset(raid_dev->una_mbox64, 0, sizeof(mbox64_t)); | |
1010 | ||
1011 | /* | |
1012 | * Align the mailbox at 16-byte boundary | |
1013 | */ | |
1014 | raid_dev->mbox = &raid_dev->una_mbox64->mbox32; | |
1015 | ||
1016 | raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & | |
1017 | (~0UL ^ 0xFUL)); | |
1018 | ||
1019 | raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); | |
1020 | ||
1021 | align = ((void *)raid_dev->mbox - | |
1022 | ((void *)&raid_dev->una_mbox64->mbox32)); | |
1023 | ||
1024 | raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + | |
1025 | align; | |
1026 | ||
1027 | // Allocate memory for commands issued internally | |
1028 | adapter->ibuf = pci_alloc_consistent(pdev, MBOX_IBUF_SIZE, | |
1029 | &adapter->ibuf_dma_h); | |
1030 | if (!adapter->ibuf) { | |
1031 | ||
1032 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1033 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1034 | __LINE__)); |
1035 | ||
1036 | goto out_free_common_mbox; | |
1037 | } | |
1038 | memset(adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
1039 | ||
1040 | // Allocate memory for our SCSI Command Blocks and their associated | |
1041 | // memory | |
1042 | ||
1043 | /* | |
1044 | * Allocate memory for the base list of scb. Later allocate memory for | |
1045 | * CCBs and embedded components of each CCB and point the pointers in | |
1046 | * scb to the allocated components | |
1047 | * NOTE: The code to allocate SCB will be duplicated in all the LLD | |
1048 | * since the calling routine does not yet know the number of available | |
1049 | * commands. | |
1050 | */ | |
dd00cc48 | 1051 | adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL); |
1da177e4 LT |
1052 | |
1053 | if (adapter->kscb_list == NULL) { | |
1054 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1055 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1056 | __LINE__)); |
1057 | goto out_free_ibuf; | |
1058 | } | |
1da177e4 LT |
1059 | |
1060 | // memory allocation for our command packets | |
1061 | if (megaraid_mbox_setup_dma_pools(adapter) != 0) { | |
1062 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1063 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1064 | __LINE__)); |
1065 | goto out_free_scb_list; | |
1066 | } | |
1067 | ||
1068 | // Adjust the scb pointers and link in the free pool | |
1069 | epthru_pci_blk = raid_dev->epthru_pool; | |
1070 | sg_pci_blk = raid_dev->sg_pool; | |
1071 | mbox_pci_blk = raid_dev->mbox_pool; | |
1072 | ||
1073 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1074 | scb = adapter->kscb_list + i; | |
1075 | ccb = raid_dev->ccb_list + i; | |
1076 | ||
1077 | ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); | |
1078 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
1079 | ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); | |
1080 | ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; | |
1081 | ||
1082 | // make sure the mailbox is aligned properly | |
1083 | if (ccb->mbox_dma_h & 0x0F) { | |
1084 | con_log(CL_ANN, (KERN_CRIT | |
1085 | "megaraid mbox: not aligned on 16-bytes\n")); | |
1086 | ||
1087 | goto out_teardown_dma_pools; | |
1088 | } | |
1089 | ||
1090 | ccb->epthru = (mraid_epassthru_t *) | |
1091 | epthru_pci_blk[i].vaddr; | |
1092 | ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; | |
1093 | ccb->pthru = (mraid_passthru_t *)ccb->epthru; | |
1094 | ccb->pthru_dma_h = ccb->epthru_dma_h; | |
1095 | ||
1096 | ||
1097 | ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; | |
1098 | ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; | |
1099 | ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; | |
1100 | ||
1101 | scb->ccb = (caddr_t)ccb; | |
1102 | scb->gp = 0; | |
1103 | ||
1104 | scb->sno = i; // command index | |
1105 | ||
1106 | scb->scp = NULL; | |
1107 | scb->state = SCB_FREE; | |
1108 | scb->dma_direction = PCI_DMA_NONE; | |
1109 | scb->dma_type = MRAID_DMA_NONE; | |
1110 | scb->dev_channel = -1; | |
1111 | scb->dev_target = -1; | |
1112 | ||
1113 | // put scb in the free pool | |
1114 | list_add_tail(&scb->list, &adapter->kscb_pool); | |
1115 | } | |
1116 | ||
1117 | return 0; | |
1118 | ||
1119 | out_teardown_dma_pools: | |
1120 | megaraid_mbox_teardown_dma_pools(adapter); | |
1121 | out_free_scb_list: | |
1122 | kfree(adapter->kscb_list); | |
1123 | out_free_ibuf: | |
1124 | pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, | |
1125 | adapter->ibuf_dma_h); | |
1126 | out_free_common_mbox: | |
1127 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1128 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1129 | ||
1130 | return -1; | |
1131 | } | |
1132 | ||
1133 | ||
1134 | /** | |
1135 | * megaraid_free_cmd_packets - free memory | |
a69b74d3 | 1136 | * @adapter : soft state of the raid controller |
1da177e4 | 1137 | * |
a69b74d3 | 1138 | * Release memory resources allocated for commands. |
1da177e4 LT |
1139 | */ |
1140 | static void | |
1141 | megaraid_free_cmd_packets(adapter_t *adapter) | |
1142 | { | |
1143 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1144 | ||
1145 | megaraid_mbox_teardown_dma_pools(adapter); | |
1146 | ||
1147 | kfree(adapter->kscb_list); | |
1148 | ||
1149 | pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE, | |
1150 | (void *)adapter->ibuf, adapter->ibuf_dma_h); | |
1151 | ||
1152 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1153 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1154 | return; | |
1155 | } | |
1156 | ||
1157 | ||
1158 | /** | |
1159 | * megaraid_mbox_setup_dma_pools - setup dma pool for command packets | |
a69b74d3 | 1160 | * @adapter : HBA soft state |
1da177e4 | 1161 | * |
a69b74d3 RD |
1162 | * Setup the dma pools for mailbox, passthru and extended passthru structures, |
1163 | * and scatter-gather lists. | |
1da177e4 LT |
1164 | */ |
1165 | static int | |
1166 | megaraid_mbox_setup_dma_pools(adapter_t *adapter) | |
1167 | { | |
1168 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1169 | struct mraid_pci_blk *epthru_pci_blk; | |
1170 | struct mraid_pci_blk *sg_pci_blk; | |
1171 | struct mraid_pci_blk *mbox_pci_blk; | |
1172 | int i; | |
1173 | ||
1174 | ||
1175 | ||
1176 | // Allocate memory for 16-bytes aligned mailboxes | |
1177 | raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool", | |
1178 | adapter->pdev, | |
1179 | sizeof(mbox64_t) + 16, | |
1180 | 16, 0); | |
1181 | ||
1182 | if (raid_dev->mbox_pool_handle == NULL) { | |
1183 | goto fail_setup_dma_pool; | |
1184 | } | |
1185 | ||
1186 | mbox_pci_blk = raid_dev->mbox_pool; | |
1187 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1188 | mbox_pci_blk[i].vaddr = pci_pool_alloc( | |
1189 | raid_dev->mbox_pool_handle, | |
1190 | GFP_KERNEL, | |
1191 | &mbox_pci_blk[i].dma_addr); | |
1192 | if (!mbox_pci_blk[i].vaddr) { | |
1193 | goto fail_setup_dma_pool; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | /* | |
1198 | * Allocate memory for each embedded passthru strucuture pointer | |
1199 | * Request for a 128 bytes aligned structure for each passthru command | |
1200 | * structure | |
1201 | * Since passthru and extended passthru commands are exclusive, they | |
1202 | * share common memory pool. Passthru structures piggyback on memory | |
1203 | * allocted to extended passthru since passthru is smaller of the two | |
1204 | */ | |
1205 | raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru", | |
1206 | adapter->pdev, sizeof(mraid_epassthru_t), 128, 0); | |
1207 | ||
1208 | if (raid_dev->epthru_pool_handle == NULL) { | |
1209 | goto fail_setup_dma_pool; | |
1210 | } | |
1211 | ||
1212 | epthru_pci_blk = raid_dev->epthru_pool; | |
1213 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1214 | epthru_pci_blk[i].vaddr = pci_pool_alloc( | |
1215 | raid_dev->epthru_pool_handle, | |
1216 | GFP_KERNEL, | |
1217 | &epthru_pci_blk[i].dma_addr); | |
1218 | if (!epthru_pci_blk[i].vaddr) { | |
1219 | goto fail_setup_dma_pool; | |
1220 | } | |
1221 | } | |
1222 | ||
1223 | ||
1224 | // Allocate memory for each scatter-gather list. Request for 512 bytes | |
1225 | // alignment for each sg list | |
1226 | raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg", | |
1227 | adapter->pdev, | |
1228 | sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, | |
1229 | 512, 0); | |
1230 | ||
1231 | if (raid_dev->sg_pool_handle == NULL) { | |
1232 | goto fail_setup_dma_pool; | |
1233 | } | |
1234 | ||
1235 | sg_pci_blk = raid_dev->sg_pool; | |
1236 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1237 | sg_pci_blk[i].vaddr = pci_pool_alloc( | |
1238 | raid_dev->sg_pool_handle, | |
1239 | GFP_KERNEL, | |
1240 | &sg_pci_blk[i].dma_addr); | |
1241 | if (!sg_pci_blk[i].vaddr) { | |
1242 | goto fail_setup_dma_pool; | |
1243 | } | |
1244 | } | |
1245 | ||
1246 | return 0; | |
1247 | ||
1248 | fail_setup_dma_pool: | |
1249 | megaraid_mbox_teardown_dma_pools(adapter); | |
1250 | return -1; | |
1251 | } | |
1252 | ||
1253 | ||
1254 | /** | |
1255 | * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets | |
a69b74d3 | 1256 | * @adapter : HBA soft state |
1da177e4 | 1257 | * |
a69b74d3 RD |
1258 | * Teardown the dma pool for mailbox, passthru and extended passthru |
1259 | * structures, and scatter-gather lists. | |
1da177e4 LT |
1260 | */ |
1261 | static void | |
1262 | megaraid_mbox_teardown_dma_pools(adapter_t *adapter) | |
1263 | { | |
1264 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1265 | struct mraid_pci_blk *epthru_pci_blk; | |
1266 | struct mraid_pci_blk *sg_pci_blk; | |
1267 | struct mraid_pci_blk *mbox_pci_blk; | |
1268 | int i; | |
1269 | ||
1270 | ||
1271 | sg_pci_blk = raid_dev->sg_pool; | |
1272 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { | |
1273 | pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, | |
1274 | sg_pci_blk[i].dma_addr); | |
1275 | } | |
1276 | if (raid_dev->sg_pool_handle) | |
1277 | pci_pool_destroy(raid_dev->sg_pool_handle); | |
1278 | ||
1279 | ||
1280 | epthru_pci_blk = raid_dev->epthru_pool; | |
1281 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { | |
1282 | pci_pool_free(raid_dev->epthru_pool_handle, | |
1283 | epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); | |
1284 | } | |
1285 | if (raid_dev->epthru_pool_handle) | |
1286 | pci_pool_destroy(raid_dev->epthru_pool_handle); | |
1287 | ||
1288 | ||
1289 | mbox_pci_blk = raid_dev->mbox_pool; | |
1290 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { | |
1291 | pci_pool_free(raid_dev->mbox_pool_handle, | |
1292 | mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); | |
1293 | } | |
1294 | if (raid_dev->mbox_pool_handle) | |
1295 | pci_pool_destroy(raid_dev->mbox_pool_handle); | |
1296 | ||
1297 | return; | |
1298 | } | |
1299 | ||
1300 | ||
1301 | /** | |
1302 | * megaraid_alloc_scb - detach and return a scb from the free list | |
1303 | * @adapter : controller's soft state | |
a69b74d3 | 1304 | * @scp : pointer to the scsi command to be executed |
1da177e4 | 1305 | * |
a69b74d3 RD |
1306 | * Return the scb from the head of the free list. %NULL if there are none |
1307 | * available. | |
1308 | */ | |
858119e1 | 1309 | static scb_t * |
1da177e4 LT |
1310 | megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) |
1311 | { | |
1312 | struct list_head *head = &adapter->kscb_pool; | |
1313 | scb_t *scb = NULL; | |
1314 | unsigned long flags; | |
1315 | ||
1316 | // detach scb from free pool | |
1317 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1318 | ||
1319 | if (list_empty(head)) { | |
1320 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1321 | return NULL; | |
1322 | } | |
1323 | ||
1324 | scb = list_entry(head->next, scb_t, list); | |
1325 | list_del_init(&scb->list); | |
1326 | ||
1327 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1328 | ||
1329 | scb->state = SCB_ACTIVE; | |
1330 | scb->scp = scp; | |
1331 | scb->dma_type = MRAID_DMA_NONE; | |
1332 | ||
1333 | return scb; | |
1334 | } | |
1335 | ||
1336 | ||
1337 | /** | |
1338 | * megaraid_dealloc_scb - return the scb to the free pool | |
1339 | * @adapter : controller's soft state | |
1340 | * @scb : scb to be freed | |
1341 | * | |
a69b74d3 | 1342 | * Return the scb back to the free list of scbs. The caller must 'flush' the |
1da177e4 LT |
1343 | * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. |
1344 | * NOTE NOTE: Make sure the scb is not on any list before calling this | |
1345 | * routine. | |
a69b74d3 | 1346 | */ |
1da177e4 LT |
1347 | static inline void |
1348 | megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) | |
1349 | { | |
1350 | unsigned long flags; | |
1351 | ||
1352 | // put scb in the free pool | |
1353 | scb->state = SCB_FREE; | |
1354 | scb->scp = NULL; | |
1355 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1356 | ||
1357 | list_add(&scb->list, &adapter->kscb_pool); | |
1358 | ||
1359 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1360 | ||
1361 | return; | |
1362 | } | |
1363 | ||
1364 | ||
1365 | /** | |
1366 | * megaraid_mbox_mksgl - make the scatter-gather list | |
a69b74d3 RD |
1367 | * @adapter : controller's soft state |
1368 | * @scb : scsi control block | |
1da177e4 | 1369 | * |
a69b74d3 | 1370 | * Prepare the scatter-gather list. |
1da177e4 | 1371 | */ |
858119e1 | 1372 | static int |
1da177e4 LT |
1373 | megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) |
1374 | { | |
1375 | struct scatterlist *sgl; | |
1376 | mbox_ccb_t *ccb; | |
1da177e4 LT |
1377 | struct scsi_cmnd *scp; |
1378 | int sgcnt; | |
1379 | int i; | |
1380 | ||
1381 | ||
1382 | scp = scb->scp; | |
1383 | ccb = (mbox_ccb_t *)scb->ccb; | |
1384 | ||
32fbac22 FT |
1385 | sgcnt = scsi_dma_map(scp); |
1386 | BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen); | |
1387 | ||
1da177e4 | 1388 | // no mapping required if no data to be transferred |
32fbac22 | 1389 | if (!sgcnt) |
1da177e4 LT |
1390 | return 0; |
1391 | ||
1da177e4 LT |
1392 | scb->dma_type = MRAID_DMA_WSG; |
1393 | ||
32fbac22 | 1394 | scsi_for_each_sg(scp, sgl, sgcnt, i) { |
1da177e4 LT |
1395 | ccb->sgl64[i].address = sg_dma_address(sgl); |
1396 | ccb->sgl64[i].length = sg_dma_len(sgl); | |
1397 | } | |
1398 | ||
1399 | // Return count of SG nodes | |
1400 | return sgcnt; | |
1401 | } | |
1402 | ||
1403 | ||
1404 | /** | |
1405 | * mbox_post_cmd - issue a mailbox command | |
a69b74d3 RD |
1406 | * @adapter : controller's soft state |
1407 | * @scb : command to be issued | |
1da177e4 | 1408 | * |
a69b74d3 | 1409 | * Post the command to the controller if mailbox is available. |
1da177e4 | 1410 | */ |
858119e1 | 1411 | static int |
1da177e4 LT |
1412 | mbox_post_cmd(adapter_t *adapter, scb_t *scb) |
1413 | { | |
1414 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1415 | mbox64_t *mbox64; | |
1416 | mbox_t *mbox; | |
1417 | mbox_ccb_t *ccb; | |
1418 | unsigned long flags; | |
1419 | unsigned int i = 0; | |
1420 | ||
1421 | ||
1422 | ccb = (mbox_ccb_t *)scb->ccb; | |
1423 | mbox = raid_dev->mbox; | |
1424 | mbox64 = raid_dev->mbox64; | |
1425 | ||
1426 | /* | |
1427 | * Check for busy mailbox. If it is, return failure - the caller | |
1428 | * should retry later. | |
1429 | */ | |
1430 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
1431 | ||
1432 | if (unlikely(mbox->busy)) { | |
1433 | do { | |
1434 | udelay(1); | |
1435 | i++; | |
1436 | rmb(); | |
1437 | } while(mbox->busy && (i < max_mbox_busy_wait)); | |
1438 | ||
1439 | if (mbox->busy) { | |
1440 | ||
1441 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1442 | ||
1443 | return -1; | |
1444 | } | |
1445 | } | |
1446 | ||
1447 | ||
1448 | // Copy this command's mailbox data into "adapter's" mailbox | |
1449 | memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); | |
1450 | mbox->cmdid = scb->sno; | |
1451 | ||
1452 | adapter->outstanding_cmds++; | |
1453 | ||
32fbac22 FT |
1454 | if (scb->dma_direction == PCI_DMA_TODEVICE) |
1455 | pci_dma_sync_sg_for_device(adapter->pdev, | |
1456 | scsi_sglist(scb->scp), | |
1457 | scsi_sg_count(scb->scp), | |
1458 | PCI_DMA_TODEVICE); | |
1da177e4 LT |
1459 | |
1460 | mbox->busy = 1; // Set busy | |
1461 | mbox->poll = 0; | |
1462 | mbox->ack = 0; | |
1463 | wmb(); | |
1464 | ||
1465 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
1466 | ||
1467 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1468 | ||
1469 | return 0; | |
1470 | } | |
1471 | ||
1472 | ||
1473 | /** | |
1474 | * megaraid_queue_command - generic queue entry point for all LLDs | |
1475 | * @scp : pointer to the scsi command to be executed | |
1476 | * @done : callback routine to be called after the cmd has be completed | |
1477 | * | |
1478 | * Queue entry point for mailbox based controllers. | |
1479 | */ | |
1480 | static int | |
a69b74d3 | 1481 | megaraid_queue_command(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) |
1da177e4 LT |
1482 | { |
1483 | adapter_t *adapter; | |
1484 | scb_t *scb; | |
1485 | int if_busy; | |
1486 | ||
1487 | adapter = SCP2ADAPTER(scp); | |
1488 | scp->scsi_done = done; | |
1489 | scp->result = 0; | |
1490 | ||
1da177e4 LT |
1491 | /* |
1492 | * Allocate and build a SCB request | |
1493 | * if_busy flag will be set if megaraid_mbox_build_cmd() command could | |
1494 | * not allocate scb. We will return non-zero status in that case. | |
1495 | * NOTE: scb can be null even though certain commands completed | |
1496 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would | |
1497 | * return 0 in that case, and we would do the callback right away. | |
1498 | */ | |
1499 | if_busy = 0; | |
f2c8dc40 | 1500 | scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); |
1da177e4 LT |
1501 | if (!scb) { // command already completed |
1502 | done(scp); | |
1503 | return 0; | |
1504 | } | |
1505 | ||
f2c8dc40 | 1506 | megaraid_mbox_runpendq(adapter, scb); |
1da177e4 LT |
1507 | return if_busy; |
1508 | } | |
1509 | ||
1da177e4 | 1510 | /** |
a69b74d3 RD |
1511 | * megaraid_mbox_build_cmd - transform the mid-layer scsi commands |
1512 | * @adapter : controller's soft state | |
1513 | * @scp : mid-layer scsi command pointer | |
1514 | * @busy : set if request could not be completed because of lack of | |
1da177e4 LT |
1515 | * resources |
1516 | * | |
a69b74d3 RD |
1517 | * Transform the mid-layer scsi command to megaraid firmware lingua. |
1518 | * Convert the command issued by mid-layer to format understood by megaraid | |
1519 | * firmware. We also complete certain commands without sending them to firmware. | |
1da177e4 LT |
1520 | */ |
1521 | static scb_t * | |
1522 | megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) | |
1523 | { | |
1524 | mraid_device_t *rdev = ADAP2RAIDDEV(adapter); | |
1525 | int channel; | |
1526 | int target; | |
1527 | int islogical; | |
1528 | mbox_ccb_t *ccb; | |
1529 | mraid_passthru_t *pthru; | |
1530 | mbox64_t *mbox64; | |
1531 | mbox_t *mbox; | |
1532 | scb_t *scb; | |
1533 | char skip[] = "skipping"; | |
1534 | char scan[] = "scanning"; | |
1535 | char *ss; | |
1536 | ||
1537 | ||
1538 | /* | |
1539 | * Get the appropriate device map for the device this command is | |
1540 | * intended for | |
1541 | */ | |
1542 | MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); | |
1543 | ||
1544 | /* | |
1545 | * Logical drive commands | |
1546 | */ | |
1547 | if (islogical) { | |
1548 | switch (scp->cmnd[0]) { | |
1549 | case TEST_UNIT_READY: | |
1550 | /* | |
1551 | * Do we support clustering and is the support enabled | |
1552 | * If no, return success always | |
1553 | */ | |
1554 | if (!adapter->ha) { | |
1555 | scp->result = (DID_OK << 16); | |
1556 | return NULL; | |
1557 | } | |
1558 | ||
1559 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1560 | scp->result = (DID_ERROR << 16); | |
1561 | *busy = 1; | |
1562 | return NULL; | |
1563 | } | |
1564 | ||
1565 | scb->dma_direction = scp->sc_data_direction; | |
1566 | scb->dev_channel = 0xFF; | |
1567 | scb->dev_target = target; | |
1568 | ccb = (mbox_ccb_t *)scb->ccb; | |
1569 | ||
1570 | /* | |
1571 | * The command id will be provided by the command | |
1572 | * issuance routine | |
1573 | */ | |
1574 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1575 | ccb->raw_mbox[2] = RESERVATION_STATUS; | |
1576 | ccb->raw_mbox[3] = target; | |
1577 | ||
1578 | return scb; | |
1579 | ||
1580 | case MODE_SENSE: | |
32fbac22 FT |
1581 | { |
1582 | struct scatterlist *sgl; | |
1583 | caddr_t vaddr; | |
1da177e4 | 1584 | |
32fbac22 | 1585 | sgl = scsi_sglist(scp); |
45711f1a JA |
1586 | if (sg_page(sgl)) { |
1587 | vaddr = (caddr_t) sg_virt(&sgl[0]); | |
1da177e4 | 1588 | |
32fbac22 | 1589 | memset(vaddr, 0, scp->cmnd[4]); |
1da177e4 LT |
1590 | } |
1591 | else { | |
32fbac22 FT |
1592 | con_log(CL_ANN, (KERN_WARNING |
1593 | "megaraid mailbox: invalid sg:%d\n", | |
1594 | __LINE__)); | |
1da177e4 | 1595 | } |
32fbac22 FT |
1596 | } |
1597 | scp->result = (DID_OK << 16); | |
1598 | return NULL; | |
1da177e4 LT |
1599 | |
1600 | case INQUIRY: | |
1601 | /* | |
1602 | * Display the channel scan for logical drives | |
1603 | * Do not display scan for a channel if already done. | |
1604 | */ | |
1605 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1606 | ||
1607 | con_log(CL_ANN, (KERN_INFO | |
1608 | "scsi[%d]: scanning scsi channel %d", | |
1609 | adapter->host->host_no, | |
1610 | SCP2CHANNEL(scp))); | |
1611 | ||
1612 | con_log(CL_ANN, ( | |
1613 | " [virtual] for logical drives\n")); | |
1614 | ||
1615 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1616 | } | |
1617 | ||
aa677bc7 JS |
1618 | if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { |
1619 | scp->sense_buffer[0] = 0x70; | |
1620 | scp->sense_buffer[2] = ILLEGAL_REQUEST; | |
1621 | scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; | |
1622 | scp->result = CHECK_CONDITION << 1; | |
1623 | return NULL; | |
1624 | } | |
1625 | ||
1da177e4 LT |
1626 | /* Fall through */ |
1627 | ||
1628 | case READ_CAPACITY: | |
1629 | /* | |
1630 | * Do not allow LUN > 0 for logical drives and | |
1631 | * requests for more than 40 logical drives | |
1632 | */ | |
1633 | if (SCP2LUN(scp)) { | |
1634 | scp->result = (DID_BAD_TARGET << 16); | |
1635 | return NULL; | |
1636 | } | |
1637 | if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { | |
1638 | scp->result = (DID_BAD_TARGET << 16); | |
1639 | return NULL; | |
1640 | } | |
1641 | ||
1642 | ||
1643 | /* Allocate a SCB and initialize passthru */ | |
1644 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1645 | scp->result = (DID_ERROR << 16); | |
1646 | *busy = 1; | |
1647 | return NULL; | |
1648 | } | |
1649 | ||
1650 | ccb = (mbox_ccb_t *)scb->ccb; | |
1651 | scb->dev_channel = 0xFF; | |
1652 | scb->dev_target = target; | |
1653 | pthru = ccb->pthru; | |
1654 | mbox = ccb->mbox; | |
1655 | mbox64 = ccb->mbox64; | |
1656 | ||
1657 | pthru->timeout = 0; | |
1658 | pthru->ars = 1; | |
1659 | pthru->reqsenselen = 14; | |
1660 | pthru->islogical = 1; | |
1661 | pthru->logdrv = target; | |
1662 | pthru->cdblen = scp->cmd_len; | |
1663 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1664 | ||
1665 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1666 | scb->dma_direction = scp->sc_data_direction; | |
1667 | ||
32fbac22 | 1668 | pthru->dataxferlen = scsi_bufflen(scp); |
1da177e4 LT |
1669 | pthru->dataxferaddr = ccb->sgl_dma_h; |
1670 | pthru->numsge = megaraid_mbox_mksgl(adapter, | |
1671 | scb); | |
1672 | ||
1673 | mbox->xferaddr = 0xFFFFFFFF; | |
1674 | mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; | |
1675 | mbox64->xferaddr_hi = 0; | |
1676 | ||
1677 | return scb; | |
1678 | ||
1679 | case READ_6: | |
1680 | case WRITE_6: | |
1681 | case READ_10: | |
1682 | case WRITE_10: | |
1683 | case READ_12: | |
1684 | case WRITE_12: | |
1685 | ||
1686 | /* | |
1687 | * Allocate a SCB and initialize mailbox | |
1688 | */ | |
1689 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1690 | scp->result = (DID_ERROR << 16); | |
1691 | *busy = 1; | |
1692 | return NULL; | |
1693 | } | |
1694 | ccb = (mbox_ccb_t *)scb->ccb; | |
1695 | scb->dev_channel = 0xFF; | |
1696 | scb->dev_target = target; | |
1697 | mbox = ccb->mbox; | |
1698 | mbox64 = ccb->mbox64; | |
1699 | mbox->logdrv = target; | |
1700 | ||
1701 | /* | |
1702 | * A little HACK: 2nd bit is zero for all scsi read | |
1703 | * commands and is set for all scsi write commands | |
1704 | */ | |
1705 | mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: | |
1706 | MBOXCMD_LREAD64 ; | |
1707 | ||
1708 | /* | |
1709 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
1710 | */ | |
1711 | if (scp->cmd_len == 6) { | |
1712 | mbox->numsectors = (uint32_t)scp->cmnd[4]; | |
1713 | mbox->lba = | |
1714 | ((uint32_t)scp->cmnd[1] << 16) | | |
1715 | ((uint32_t)scp->cmnd[2] << 8) | | |
1716 | (uint32_t)scp->cmnd[3]; | |
1717 | ||
1718 | mbox->lba &= 0x1FFFFF; | |
1719 | } | |
1720 | ||
1721 | /* | |
1722 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
1723 | */ | |
1724 | else if (scp->cmd_len == 10) { | |
1725 | mbox->numsectors = | |
1726 | (uint32_t)scp->cmnd[8] | | |
1727 | ((uint32_t)scp->cmnd[7] << 8); | |
1728 | mbox->lba = | |
1729 | ((uint32_t)scp->cmnd[2] << 24) | | |
1730 | ((uint32_t)scp->cmnd[3] << 16) | | |
1731 | ((uint32_t)scp->cmnd[4] << 8) | | |
1732 | (uint32_t)scp->cmnd[5]; | |
1733 | } | |
1734 | ||
1735 | /* | |
1736 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
1737 | */ | |
1738 | else if (scp->cmd_len == 12) { | |
1739 | mbox->lba = | |
1740 | ((uint32_t)scp->cmnd[2] << 24) | | |
1741 | ((uint32_t)scp->cmnd[3] << 16) | | |
1742 | ((uint32_t)scp->cmnd[4] << 8) | | |
1743 | (uint32_t)scp->cmnd[5]; | |
1744 | ||
1745 | mbox->numsectors = | |
1746 | ((uint32_t)scp->cmnd[6] << 24) | | |
1747 | ((uint32_t)scp->cmnd[7] << 16) | | |
1748 | ((uint32_t)scp->cmnd[8] << 8) | | |
1749 | (uint32_t)scp->cmnd[9]; | |
1750 | } | |
1751 | else { | |
1752 | con_log(CL_ANN, (KERN_WARNING | |
1753 | "megaraid: unsupported CDB length\n")); | |
1754 | ||
1755 | megaraid_dealloc_scb(adapter, scb); | |
1756 | ||
1757 | scp->result = (DID_ERROR << 16); | |
1758 | return NULL; | |
1759 | } | |
1760 | ||
1761 | scb->dma_direction = scp->sc_data_direction; | |
1762 | ||
1763 | // Calculate Scatter-Gather info | |
1764 | mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; | |
1765 | mbox->numsge = megaraid_mbox_mksgl(adapter, | |
1766 | scb); | |
1767 | mbox->xferaddr = 0xFFFFFFFF; | |
1768 | mbox64->xferaddr_hi = 0; | |
1769 | ||
1770 | return scb; | |
1771 | ||
1772 | case RESERVE: | |
1773 | case RELEASE: | |
1774 | /* | |
1775 | * Do we support clustering and is the support enabled | |
1776 | */ | |
1777 | if (!adapter->ha) { | |
1778 | scp->result = (DID_BAD_TARGET << 16); | |
1779 | return NULL; | |
1780 | } | |
1781 | ||
1782 | /* | |
1783 | * Allocate a SCB and initialize mailbox | |
1784 | */ | |
1785 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1786 | scp->result = (DID_ERROR << 16); | |
1787 | *busy = 1; | |
1788 | return NULL; | |
1789 | } | |
1790 | ||
1791 | ccb = (mbox_ccb_t *)scb->ccb; | |
1792 | scb->dev_channel = 0xFF; | |
1793 | scb->dev_target = target; | |
1794 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1795 | ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? | |
1796 | RESERVE_LD : RELEASE_LD; | |
1797 | ||
1798 | ccb->raw_mbox[3] = target; | |
1799 | scb->dma_direction = scp->sc_data_direction; | |
1800 | ||
1801 | return scb; | |
1802 | ||
1803 | default: | |
1804 | scp->result = (DID_BAD_TARGET << 16); | |
1805 | return NULL; | |
1806 | } | |
1807 | } | |
1808 | else { // Passthru device commands | |
1809 | ||
1810 | // Do not allow access to target id > 15 or LUN > 7 | |
1811 | if (target > 15 || SCP2LUN(scp) > 7) { | |
1812 | scp->result = (DID_BAD_TARGET << 16); | |
1813 | return NULL; | |
1814 | } | |
1815 | ||
1816 | // if fast load option was set and scan for last device is | |
1817 | // over, reset the fast_load flag so that during a possible | |
1818 | // next scan, devices can be made available | |
1819 | if (rdev->fast_load && (target == 15) && | |
1820 | (SCP2CHANNEL(scp) == adapter->max_channel -1)) { | |
1821 | ||
1822 | con_log(CL_ANN, (KERN_INFO | |
1823 | "megaraid[%d]: physical device scan re-enabled\n", | |
1824 | adapter->host->host_no)); | |
1825 | rdev->fast_load = 0; | |
1826 | } | |
1827 | ||
1828 | /* | |
1829 | * Display the channel scan for physical devices | |
1830 | */ | |
1831 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1832 | ||
1833 | ss = rdev->fast_load ? skip : scan; | |
1834 | ||
1835 | con_log(CL_ANN, (KERN_INFO | |
1836 | "scsi[%d]: %s scsi channel %d [Phy %d]", | |
1837 | adapter->host->host_no, ss, SCP2CHANNEL(scp), | |
1838 | channel)); | |
1839 | ||
1840 | con_log(CL_ANN, ( | |
1841 | " for non-raid devices\n")); | |
1842 | ||
1843 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1844 | } | |
1845 | ||
1846 | // disable channel sweep if fast load option given | |
1847 | if (rdev->fast_load) { | |
1848 | scp->result = (DID_BAD_TARGET << 16); | |
1849 | return NULL; | |
1850 | } | |
1851 | ||
1852 | // Allocate a SCB and initialize passthru | |
1853 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1854 | scp->result = (DID_ERROR << 16); | |
1855 | *busy = 1; | |
1856 | return NULL; | |
1857 | } | |
1858 | ||
1859 | ccb = (mbox_ccb_t *)scb->ccb; | |
1860 | scb->dev_channel = channel; | |
1861 | scb->dev_target = target; | |
1862 | scb->dma_direction = scp->sc_data_direction; | |
1863 | mbox = ccb->mbox; | |
1864 | mbox64 = ccb->mbox64; | |
1865 | ||
1866 | // Does this firmware support extended CDBs | |
1867 | if (adapter->max_cdb_sz == 16) { | |
1868 | mbox->cmd = MBOXCMD_EXTPTHRU; | |
1869 | ||
1870 | megaraid_mbox_prepare_epthru(adapter, scb, scp); | |
1871 | ||
1872 | mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; | |
1873 | mbox64->xferaddr_hi = 0; | |
1874 | mbox->xferaddr = 0xFFFFFFFF; | |
1875 | } | |
1876 | else { | |
1877 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1878 | ||
1879 | megaraid_mbox_prepare_pthru(adapter, scb, scp); | |
1880 | ||
1881 | mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; | |
1882 | mbox64->xferaddr_hi = 0; | |
1883 | mbox->xferaddr = 0xFFFFFFFF; | |
1884 | } | |
1885 | return scb; | |
1886 | } | |
1887 | ||
1888 | // NOT REACHED | |
1889 | } | |
1890 | ||
1891 | ||
1892 | /** | |
1893 | * megaraid_mbox_runpendq - execute commands queued in the pending queue | |
1894 | * @adapter : controller's soft state | |
a69b74d3 | 1895 | * @scb_q : SCB to be queued in the pending list |
1da177e4 | 1896 | * |
a69b74d3 | 1897 | * Scan the pending list for commands which are not yet issued and try to |
1da177e4 LT |
1898 | * post to the controller. The SCB can be a null pointer, which would indicate |
1899 | * no SCB to be queue, just try to execute the ones in the pending list. | |
1900 | * | |
1901 | * NOTE: We do not actually traverse the pending list. The SCBs are plucked | |
1902 | * out from the head of the pending list. If it is successfully issued, the | |
1903 | * next SCB is at the head now. | |
1904 | */ | |
1905 | static void | |
1906 | megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) | |
1907 | { | |
1908 | scb_t *scb; | |
1909 | unsigned long flags; | |
1910 | ||
1911 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1912 | ||
1913 | if (scb_q) { | |
1914 | scb_q->state = SCB_PENDQ; | |
1915 | list_add_tail(&scb_q->list, &adapter->pend_list); | |
1916 | } | |
1917 | ||
1918 | // if the adapter in not in quiescent mode, post the commands to FW | |
1919 | if (adapter->quiescent) { | |
1920 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1921 | return; | |
1922 | } | |
1923 | ||
1924 | while (!list_empty(&adapter->pend_list)) { | |
1925 | ||
1926 | assert_spin_locked(PENDING_LIST_LOCK(adapter)); | |
1927 | ||
1928 | scb = list_entry(adapter->pend_list.next, scb_t, list); | |
1929 | ||
1930 | // remove the scb from the pending list and try to | |
1931 | // issue. If we are unable to issue it, put back in | |
1932 | // the pending list and return | |
1933 | ||
1934 | list_del_init(&scb->list); | |
1935 | ||
1936 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1937 | ||
1938 | // if mailbox was busy, return SCB back to pending | |
1939 | // list. Make sure to add at the head, since that's | |
1940 | // where it would have been removed from | |
1941 | ||
1942 | scb->state = SCB_ISSUED; | |
1943 | ||
1944 | if (mbox_post_cmd(adapter, scb) != 0) { | |
1945 | ||
1946 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1947 | ||
1948 | scb->state = SCB_PENDQ; | |
1949 | ||
1950 | list_add(&scb->list, &adapter->pend_list); | |
1951 | ||
1952 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
1953 | flags); | |
1954 | ||
1955 | return; | |
1956 | } | |
1957 | ||
1958 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1959 | } | |
1960 | ||
1961 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1962 | ||
1963 | ||
1964 | return; | |
1965 | } | |
1966 | ||
1967 | ||
1968 | /** | |
1969 | * megaraid_mbox_prepare_pthru - prepare a command for physical devices | |
a69b74d3 RD |
1970 | * @adapter : pointer to controller's soft state |
1971 | * @scb : scsi control block | |
1972 | * @scp : scsi command from the mid-layer | |
1da177e4 | 1973 | * |
a69b74d3 | 1974 | * Prepare a command for the scsi physical devices. |
1da177e4 LT |
1975 | */ |
1976 | static void | |
1977 | megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, | |
1978 | struct scsi_cmnd *scp) | |
1979 | { | |
1980 | mbox_ccb_t *ccb; | |
1981 | mraid_passthru_t *pthru; | |
1982 | uint8_t channel; | |
1983 | uint8_t target; | |
1984 | ||
1985 | ccb = (mbox_ccb_t *)scb->ccb; | |
1986 | pthru = ccb->pthru; | |
1987 | channel = scb->dev_channel; | |
1988 | target = scb->dev_target; | |
1989 | ||
1990 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
1991 | pthru->timeout = 4; | |
1992 | pthru->ars = 1; | |
1993 | pthru->islogical = 0; | |
1994 | pthru->channel = 0; | |
1995 | pthru->target = (channel << 4) | target; | |
1996 | pthru->logdrv = SCP2LUN(scp); | |
1997 | pthru->reqsenselen = 14; | |
1998 | pthru->cdblen = scp->cmd_len; | |
1999 | ||
2000 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
2001 | ||
32fbac22 FT |
2002 | if (scsi_bufflen(scp)) { |
2003 | pthru->dataxferlen = scsi_bufflen(scp); | |
1da177e4 LT |
2004 | pthru->dataxferaddr = ccb->sgl_dma_h; |
2005 | pthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2006 | } | |
2007 | else { | |
2008 | pthru->dataxferaddr = 0; | |
2009 | pthru->dataxferlen = 0; | |
2010 | pthru->numsge = 0; | |
2011 | } | |
2012 | return; | |
2013 | } | |
2014 | ||
2015 | ||
2016 | /** | |
2017 | * megaraid_mbox_prepare_epthru - prepare a command for physical devices | |
a69b74d3 RD |
2018 | * @adapter : pointer to controller's soft state |
2019 | * @scb : scsi control block | |
2020 | * @scp : scsi command from the mid-layer | |
1da177e4 | 2021 | * |
a69b74d3 RD |
2022 | * Prepare a command for the scsi physical devices. This rountine prepares |
2023 | * commands for devices which can take extended CDBs (>10 bytes). | |
1da177e4 LT |
2024 | */ |
2025 | static void | |
2026 | megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, | |
2027 | struct scsi_cmnd *scp) | |
2028 | { | |
2029 | mbox_ccb_t *ccb; | |
2030 | mraid_epassthru_t *epthru; | |
2031 | uint8_t channel; | |
2032 | uint8_t target; | |
2033 | ||
2034 | ccb = (mbox_ccb_t *)scb->ccb; | |
2035 | epthru = ccb->epthru; | |
2036 | channel = scb->dev_channel; | |
2037 | target = scb->dev_target; | |
2038 | ||
2039 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
2040 | epthru->timeout = 4; | |
2041 | epthru->ars = 1; | |
2042 | epthru->islogical = 0; | |
2043 | epthru->channel = 0; | |
2044 | epthru->target = (channel << 4) | target; | |
2045 | epthru->logdrv = SCP2LUN(scp); | |
2046 | epthru->reqsenselen = 14; | |
2047 | epthru->cdblen = scp->cmd_len; | |
2048 | ||
2049 | memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); | |
2050 | ||
32fbac22 FT |
2051 | if (scsi_bufflen(scp)) { |
2052 | epthru->dataxferlen = scsi_bufflen(scp); | |
1da177e4 LT |
2053 | epthru->dataxferaddr = ccb->sgl_dma_h; |
2054 | epthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2055 | } | |
2056 | else { | |
2057 | epthru->dataxferaddr = 0; | |
2058 | epthru->dataxferlen = 0; | |
2059 | epthru->numsge = 0; | |
2060 | } | |
2061 | return; | |
2062 | } | |
2063 | ||
2064 | ||
2065 | /** | |
2066 | * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs | |
a69b74d3 | 2067 | * @adapter : controller's soft state |
1da177e4 | 2068 | * |
a69b74d3 | 2069 | * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the |
1da177e4 LT |
2070 | * completed command and put them on the completed list for later processing. |
2071 | * | |
2072 | * Returns: 1 if the interrupt is valid, 0 otherwise | |
2073 | */ | |
858119e1 | 2074 | static int |
1da177e4 LT |
2075 | megaraid_ack_sequence(adapter_t *adapter) |
2076 | { | |
2077 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2078 | mbox_t *mbox; | |
2079 | scb_t *scb; | |
2080 | uint8_t nstatus; | |
2081 | uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; | |
2082 | struct list_head clist; | |
2083 | int handled; | |
2084 | uint32_t dword; | |
2085 | unsigned long flags; | |
2086 | int i, j; | |
2087 | ||
2088 | ||
2089 | mbox = raid_dev->mbox; | |
2090 | ||
2091 | // move the SCBs from the firmware completed array to our local list | |
2092 | INIT_LIST_HEAD(&clist); | |
2093 | ||
2094 | // loop till F/W has more commands for us to complete | |
2095 | handled = 0; | |
2096 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
2097 | do { | |
2098 | /* | |
2099 | * Check if a valid interrupt is pending. If found, force the | |
2100 | * interrupt line low. | |
2101 | */ | |
2102 | dword = RDOUTDOOR(raid_dev); | |
2103 | if (dword != 0x10001234) break; | |
2104 | ||
2105 | handled = 1; | |
2106 | ||
2107 | WROUTDOOR(raid_dev, 0x10001234); | |
2108 | ||
2109 | nstatus = 0; | |
2110 | // wait for valid numstatus to post | |
2111 | for (i = 0; i < 0xFFFFF; i++) { | |
2112 | if (mbox->numstatus != 0xFF) { | |
2113 | nstatus = mbox->numstatus; | |
2114 | break; | |
2115 | } | |
2116 | rmb(); | |
2117 | } | |
2118 | mbox->numstatus = 0xFF; | |
2119 | ||
2120 | adapter->outstanding_cmds -= nstatus; | |
2121 | ||
2122 | for (i = 0; i < nstatus; i++) { | |
2123 | ||
2124 | // wait for valid command index to post | |
2125 | for (j = 0; j < 0xFFFFF; j++) { | |
2126 | if (mbox->completed[i] != 0xFF) break; | |
2127 | rmb(); | |
2128 | } | |
2129 | completed[i] = mbox->completed[i]; | |
2130 | mbox->completed[i] = 0xFF; | |
2131 | ||
2132 | if (completed[i] == 0xFF) { | |
2133 | con_log(CL_ANN, (KERN_CRIT | |
2134 | "megaraid: command posting timed out\n")); | |
2135 | ||
2136 | BUG(); | |
2137 | continue; | |
2138 | } | |
2139 | ||
2140 | // Get SCB associated with this command id | |
2141 | if (completed[i] >= MBOX_MAX_SCSI_CMDS) { | |
2142 | // a cmm command | |
2143 | scb = adapter->uscb_list + (completed[i] - | |
2144 | MBOX_MAX_SCSI_CMDS); | |
2145 | } | |
2146 | else { | |
2147 | // an os command | |
2148 | scb = adapter->kscb_list + completed[i]; | |
2149 | } | |
2150 | ||
2151 | scb->status = mbox->status; | |
2152 | list_add_tail(&scb->list, &clist); | |
2153 | } | |
2154 | ||
2155 | // Acknowledge interrupt | |
2156 | WRINDOOR(raid_dev, 0x02); | |
2157 | ||
2158 | } while(1); | |
2159 | ||
2160 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
2161 | ||
2162 | ||
2163 | // put the completed commands in the completed list. DPC would | |
2164 | // complete these commands later | |
2165 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2166 | ||
2167 | list_splice(&clist, &adapter->completed_list); | |
2168 | ||
2169 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2170 | ||
2171 | ||
2172 | // schedule the DPC if there is some work for it | |
2173 | if (handled) | |
2174 | tasklet_schedule(&adapter->dpc_h); | |
2175 | ||
2176 | return handled; | |
2177 | } | |
2178 | ||
2179 | ||
2180 | /** | |
2181 | * megaraid_isr - isr for memory based mailbox based controllers | |
a69b74d3 RD |
2182 | * @irq : irq |
2183 | * @devp : pointer to our soft state | |
1da177e4 LT |
2184 | * |
2185 | * Interrupt service routine for memory-mapped mailbox controllers. | |
2186 | */ | |
2187 | static irqreturn_t | |
7d12e780 | 2188 | megaraid_isr(int irq, void *devp) |
1da177e4 LT |
2189 | { |
2190 | adapter_t *adapter = devp; | |
2191 | int handled; | |
2192 | ||
2193 | handled = megaraid_ack_sequence(adapter); | |
2194 | ||
2195 | /* Loop through any pending requests */ | |
2196 | if (!adapter->quiescent) { | |
2197 | megaraid_mbox_runpendq(adapter, NULL); | |
2198 | } | |
2199 | ||
2200 | return IRQ_RETVAL(handled); | |
2201 | } | |
2202 | ||
2203 | ||
2204 | /** | |
2205 | * megaraid_mbox_sync_scb - sync kernel buffers | |
2206 | * @adapter : controller's soft state | |
2207 | * @scb : pointer to the resource packet | |
2208 | * | |
2209 | * DMA sync if required. | |
2210 | */ | |
858119e1 | 2211 | static void |
1da177e4 LT |
2212 | megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb) |
2213 | { | |
2214 | mbox_ccb_t *ccb; | |
2215 | ||
2216 | ccb = (mbox_ccb_t *)scb->ccb; | |
2217 | ||
32fbac22 FT |
2218 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) |
2219 | pci_dma_sync_sg_for_cpu(adapter->pdev, | |
2220 | scsi_sglist(scb->scp), | |
2221 | scsi_sg_count(scb->scp), | |
1da177e4 | 2222 | PCI_DMA_FROMDEVICE); |
1da177e4 | 2223 | |
32fbac22 | 2224 | scsi_dma_unmap(scb->scp); |
1da177e4 LT |
2225 | return; |
2226 | } | |
2227 | ||
2228 | ||
2229 | /** | |
2230 | * megaraid_mbox_dpc - the tasklet to complete the commands from completed list | |
2231 | * @devp : pointer to HBA soft state | |
2232 | * | |
2233 | * Pick up the commands from the completed list and send back to the owners. | |
2234 | * This is a reentrant function and does not assume any locks are held while | |
2235 | * it is being called. | |
2236 | */ | |
2237 | static void | |
2238 | megaraid_mbox_dpc(unsigned long devp) | |
2239 | { | |
2240 | adapter_t *adapter = (adapter_t *)devp; | |
2241 | mraid_device_t *raid_dev; | |
2242 | struct list_head clist; | |
2243 | struct scatterlist *sgl; | |
2244 | scb_t *scb; | |
2245 | scb_t *tmp; | |
2246 | struct scsi_cmnd *scp; | |
2247 | mraid_passthru_t *pthru; | |
2248 | mraid_epassthru_t *epthru; | |
2249 | mbox_ccb_t *ccb; | |
2250 | int islogical; | |
2251 | int pdev_index; | |
2252 | int pdev_state; | |
2253 | mbox_t *mbox; | |
2254 | unsigned long flags; | |
2255 | uint8_t c; | |
2256 | int status; | |
c005fb4f | 2257 | uioc_t *kioc; |
1da177e4 LT |
2258 | |
2259 | ||
2260 | if (!adapter) return; | |
2261 | ||
2262 | raid_dev = ADAP2RAIDDEV(adapter); | |
2263 | ||
2264 | // move the SCBs from the completed list to our local list | |
2265 | INIT_LIST_HEAD(&clist); | |
2266 | ||
2267 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2268 | ||
2269 | list_splice_init(&adapter->completed_list, &clist); | |
2270 | ||
2271 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2272 | ||
2273 | ||
2274 | list_for_each_entry_safe(scb, tmp, &clist, list) { | |
2275 | ||
2276 | status = scb->status; | |
2277 | scp = scb->scp; | |
2278 | ccb = (mbox_ccb_t *)scb->ccb; | |
2279 | pthru = ccb->pthru; | |
2280 | epthru = ccb->epthru; | |
2281 | mbox = ccb->mbox; | |
2282 | ||
2283 | // Make sure f/w has completed a valid command | |
2284 | if (scb->state != SCB_ISSUED) { | |
2285 | con_log(CL_ANN, (KERN_CRIT | |
2286 | "megaraid critical err: invalid command %d:%d:%p\n", | |
2287 | scb->sno, scb->state, scp)); | |
2288 | BUG(); | |
2289 | continue; // Must never happen! | |
2290 | } | |
2291 | ||
2292 | // check for the management command and complete it right away | |
2293 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { | |
2294 | scb->state = SCB_FREE; | |
2295 | scb->status = status; | |
2296 | ||
2297 | // remove from local clist | |
2298 | list_del_init(&scb->list); | |
2299 | ||
c005fb4f JS |
2300 | kioc = (uioc_t *)scb->gp; |
2301 | kioc->status = 0; | |
2302 | ||
1da177e4 LT |
2303 | megaraid_mbox_mm_done(adapter, scb); |
2304 | ||
2305 | continue; | |
2306 | } | |
2307 | ||
2308 | // Was an abort issued for this command earlier | |
2309 | if (scb->state & SCB_ABORT) { | |
2310 | con_log(CL_ANN, (KERN_NOTICE | |
2311 | "megaraid: aborted cmd %lx[%x] completed\n", | |
2312 | scp->serial_number, scb->sno)); | |
2313 | } | |
2314 | ||
2315 | /* | |
2316 | * If the inquiry came of a disk drive which is not part of | |
2317 | * any RAID array, expose it to the kernel. For this to be | |
2318 | * enabled, user must set the "megaraid_expose_unconf_disks" | |
2319 | * flag to 1 by specifying it on module parameter list. | |
2320 | * This would enable data migration off drives from other | |
2321 | * configurations. | |
2322 | */ | |
2323 | islogical = MRAID_IS_LOGICAL(adapter, scp); | |
2324 | if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 | |
2325 | && IS_RAID_CH(raid_dev, scb->dev_channel)) { | |
2326 | ||
32fbac22 | 2327 | sgl = scsi_sglist(scp); |
45711f1a JA |
2328 | if (sg_page(sgl)) { |
2329 | c = *(unsigned char *) sg_virt(&sgl[0]); | |
32fbac22 FT |
2330 | } else { |
2331 | con_log(CL_ANN, (KERN_WARNING | |
2332 | "megaraid mailbox: invalid sg:%d\n", | |
2333 | __LINE__)); | |
2334 | c = 0; | |
1da177e4 LT |
2335 | } |
2336 | ||
2337 | if ((c & 0x1F ) == TYPE_DISK) { | |
2338 | pdev_index = (scb->dev_channel * 16) + | |
2339 | scb->dev_target; | |
2340 | pdev_state = | |
2341 | raid_dev->pdrv_state[pdev_index] & 0x0F; | |
2342 | ||
2343 | if (pdev_state == PDRV_ONLINE || | |
2344 | pdev_state == PDRV_FAILED || | |
2345 | pdev_state == PDRV_RBLD || | |
2346 | pdev_state == PDRV_HOTSPARE || | |
2347 | megaraid_expose_unconf_disks == 0) { | |
2348 | ||
2349 | status = 0xF0; | |
2350 | } | |
2351 | } | |
2352 | } | |
2353 | ||
2354 | // Convert MegaRAID status to Linux error code | |
2355 | switch (status) { | |
2356 | ||
2357 | case 0x00: | |
2358 | ||
2359 | scp->result = (DID_OK << 16); | |
2360 | break; | |
2361 | ||
2362 | case 0x02: | |
2363 | ||
2364 | /* set sense_buffer and result fields */ | |
2365 | if (mbox->cmd == MBOXCMD_PASSTHRU || | |
2366 | mbox->cmd == MBOXCMD_PASSTHRU64) { | |
2367 | ||
2368 | memcpy(scp->sense_buffer, pthru->reqsensearea, | |
2369 | 14); | |
2370 | ||
2371 | scp->result = DRIVER_SENSE << 24 | | |
2372 | DID_OK << 16 | CHECK_CONDITION << 1; | |
2373 | } | |
2374 | else { | |
2375 | if (mbox->cmd == MBOXCMD_EXTPTHRU) { | |
2376 | ||
2377 | memcpy(scp->sense_buffer, | |
2378 | epthru->reqsensearea, 14); | |
2379 | ||
2380 | scp->result = DRIVER_SENSE << 24 | | |
2381 | DID_OK << 16 | | |
2382 | CHECK_CONDITION << 1; | |
2383 | } else { | |
2384 | scp->sense_buffer[0] = 0x70; | |
2385 | scp->sense_buffer[2] = ABORTED_COMMAND; | |
2386 | scp->result = CHECK_CONDITION << 1; | |
2387 | } | |
2388 | } | |
2389 | break; | |
2390 | ||
2391 | case 0x08: | |
2392 | ||
2393 | scp->result = DID_BUS_BUSY << 16 | status; | |
2394 | break; | |
2395 | ||
2396 | default: | |
2397 | ||
2398 | /* | |
2399 | * If TEST_UNIT_READY fails, we know RESERVATION_STATUS | |
2400 | * failed | |
2401 | */ | |
2402 | if (scp->cmnd[0] == TEST_UNIT_READY) { | |
2403 | scp->result = DID_ERROR << 16 | | |
2404 | RESERVATION_CONFLICT << 1; | |
2405 | } | |
2406 | else | |
2407 | /* | |
2408 | * Error code returned is 1 if Reserve or Release | |
2409 | * failed or the input parameter is invalid | |
2410 | */ | |
2411 | if (status == 1 && (scp->cmnd[0] == RESERVE || | |
2412 | scp->cmnd[0] == RELEASE)) { | |
2413 | ||
2414 | scp->result = DID_ERROR << 16 | | |
2415 | RESERVATION_CONFLICT << 1; | |
2416 | } | |
2417 | else { | |
2418 | scp->result = DID_BAD_TARGET << 16 | status; | |
2419 | } | |
2420 | } | |
2421 | ||
2422 | // print a debug message for all failed commands | |
2423 | if (status) { | |
2424 | megaraid_mbox_display_scb(adapter, scb); | |
2425 | } | |
2426 | ||
2427 | // Free our internal resources and call the mid-layer callback | |
2428 | // routine | |
2429 | megaraid_mbox_sync_scb(adapter, scb); | |
2430 | ||
2431 | // remove from local clist | |
2432 | list_del_init(&scb->list); | |
2433 | ||
2434 | // put back in free list | |
2435 | megaraid_dealloc_scb(adapter, scb); | |
2436 | ||
2437 | // send the scsi packet back to kernel | |
1da177e4 | 2438 | scp->scsi_done(scp); |
1da177e4 LT |
2439 | } |
2440 | ||
2441 | return; | |
2442 | } | |
2443 | ||
2444 | ||
2445 | /** | |
2446 | * megaraid_abort_handler - abort the scsi command | |
2447 | * @scp : command to be aborted | |
2448 | * | |
2449 | * Abort a previous SCSI request. Only commands on the pending list can be | |
2450 | * aborted. All the commands issued to the F/W must complete. | |
2451 | **/ | |
2452 | static int | |
f2c8dc40 | 2453 | megaraid_abort_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2454 | { |
2455 | adapter_t *adapter; | |
2456 | mraid_device_t *raid_dev; | |
2457 | scb_t *scb; | |
2458 | scb_t *tmp; | |
2459 | int found; | |
2460 | unsigned long flags; | |
2461 | int i; | |
2462 | ||
2463 | ||
2464 | adapter = SCP2ADAPTER(scp); | |
2465 | raid_dev = ADAP2RAIDDEV(adapter); | |
2466 | ||
1da177e4 LT |
2467 | con_log(CL_ANN, (KERN_WARNING |
2468 | "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n", | |
2469 | scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp), | |
2470 | SCP2TARGET(scp), SCP2LUN(scp))); | |
2471 | ||
2472 | // If FW has stopped responding, simply return failure | |
2473 | if (raid_dev->hw_error) { | |
2474 | con_log(CL_ANN, (KERN_NOTICE | |
2475 | "megaraid: hw error, not aborting\n")); | |
2476 | return FAILED; | |
2477 | } | |
2478 | ||
2479 | // There might a race here, where the command was completed by the | |
2480 | // firmware and now it is on the completed list. Before we could | |
2481 | // complete the command to the kernel in dpc, the abort came. | |
2482 | // Find out if this is the case to avoid the race. | |
2483 | scb = NULL; | |
2484 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2485 | list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { | |
2486 | ||
2487 | if (scb->scp == scp) { // Found command | |
2488 | ||
2489 | list_del_init(&scb->list); // from completed list | |
2490 | ||
2491 | con_log(CL_ANN, (KERN_WARNING | |
2492 | "megaraid: %ld:%d[%d:%d], abort from completed list\n", | |
2493 | scp->serial_number, scb->sno, | |
2494 | scb->dev_channel, scb->dev_target)); | |
2495 | ||
2496 | scp->result = (DID_ABORT << 16); | |
2497 | scp->scsi_done(scp); | |
2498 | ||
2499 | megaraid_dealloc_scb(adapter, scb); | |
2500 | ||
2501 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), | |
2502 | flags); | |
2503 | ||
2504 | return SUCCESS; | |
2505 | } | |
2506 | } | |
2507 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2508 | ||
2509 | ||
2510 | // Find out if this command is still on the pending list. If it is and | |
2511 | // was never issued, abort and return success. If the command is owned | |
2512 | // by the firmware, we must wait for it to complete by the FW. | |
2513 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2514 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
2515 | ||
2516 | if (scb->scp == scp) { // Found command | |
2517 | ||
2518 | list_del_init(&scb->list); // from pending list | |
2519 | ||
2520 | ASSERT(!(scb->state & SCB_ISSUED)); | |
2521 | ||
2522 | con_log(CL_ANN, (KERN_WARNING | |
2523 | "megaraid abort: %ld[%d:%d], driver owner\n", | |
2524 | scp->serial_number, scb->dev_channel, | |
2525 | scb->dev_target)); | |
2526 | ||
2527 | scp->result = (DID_ABORT << 16); | |
2528 | scp->scsi_done(scp); | |
2529 | ||
2530 | megaraid_dealloc_scb(adapter, scb); | |
2531 | ||
2532 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
2533 | flags); | |
2534 | ||
2535 | return SUCCESS; | |
2536 | } | |
2537 | } | |
2538 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2539 | ||
2540 | ||
2541 | // Check do we even own this command, in which case this would be | |
2542 | // owned by the firmware. The only way to locate the FW scb is to | |
2543 | // traverse through the list of all SCB, since driver does not | |
2544 | // maintain these SCBs on any list | |
2545 | found = 0; | |
f2c8dc40 | 2546 | spin_lock_irq(&adapter->lock); |
1da177e4 LT |
2547 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
2548 | scb = adapter->kscb_list + i; | |
2549 | ||
2550 | if (scb->scp == scp) { | |
2551 | ||
2552 | found = 1; | |
2553 | ||
2554 | if (!(scb->state & SCB_ISSUED)) { | |
2555 | con_log(CL_ANN, (KERN_WARNING | |
2556 | "megaraid abort: %ld%d[%d:%d], invalid state\n", | |
2557 | scp->serial_number, scb->sno, scb->dev_channel, | |
2558 | scb->dev_target)); | |
2559 | BUG(); | |
2560 | } | |
2561 | else { | |
2562 | con_log(CL_ANN, (KERN_WARNING | |
2563 | "megaraid abort: %ld:%d[%d:%d], fw owner\n", | |
2564 | scp->serial_number, scb->sno, scb->dev_channel, | |
2565 | scb->dev_target)); | |
2566 | } | |
2567 | } | |
2568 | } | |
f2c8dc40 | 2569 | spin_unlock_irq(&adapter->lock); |
1da177e4 LT |
2570 | |
2571 | if (!found) { | |
2572 | con_log(CL_ANN, (KERN_WARNING | |
2573 | "megaraid abort: scsi cmd:%ld, do now own\n", | |
2574 | scp->serial_number)); | |
2575 | ||
2576 | // FIXME: Should there be a callback for this command? | |
2577 | return SUCCESS; | |
2578 | } | |
2579 | ||
2580 | // We cannot actually abort a command owned by firmware, return | |
2581 | // failure and wait for reset. In host reset handler, we will find out | |
2582 | // if the HBA is still live | |
2583 | return FAILED; | |
2584 | } | |
2585 | ||
1da177e4 LT |
2586 | /** |
2587 | * megaraid_reset_handler - device reset hadler for mailbox based driver | |
2588 | * @scp : reference command | |
2589 | * | |
2590 | * Reset handler for the mailbox based controller. First try to find out if | |
2591 | * the FW is still live, in which case the outstanding commands counter mut go | |
2592 | * down to 0. If that happens, also issue the reservation reset command to | |
2593 | * relinquish (possible) reservations on the logical drives connected to this | |
a69b74d3 | 2594 | * host. |
1da177e4 LT |
2595 | **/ |
2596 | static int | |
f2c8dc40 | 2597 | megaraid_reset_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2598 | { |
2599 | adapter_t *adapter; | |
2600 | scb_t *scb; | |
2601 | scb_t *tmp; | |
2602 | mraid_device_t *raid_dev; | |
2603 | unsigned long flags; | |
2604 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2605 | int rval; | |
2606 | int recovery_window; | |
2607 | int recovering; | |
2608 | int i; | |
c005fb4f | 2609 | uioc_t *kioc; |
1da177e4 LT |
2610 | |
2611 | adapter = SCP2ADAPTER(scp); | |
2612 | raid_dev = ADAP2RAIDDEV(adapter); | |
2613 | ||
1da177e4 LT |
2614 | // return failure if adapter is not responding |
2615 | if (raid_dev->hw_error) { | |
2616 | con_log(CL_ANN, (KERN_NOTICE | |
2617 | "megaraid: hw error, cannot reset\n")); | |
2618 | return FAILED; | |
2619 | } | |
2620 | ||
2621 | ||
2622 | // Under exceptional conditions, FW can take up to 3 minutes to | |
2623 | // complete command processing. Wait for additional 2 minutes for the | |
2624 | // pending commands counter to go down to 0. If it doesn't, let the | |
2625 | // controller be marked offline | |
2626 | // Also, reset all the commands currently owned by the driver | |
2627 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2628 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
1da177e4 LT |
2629 | list_del_init(&scb->list); // from pending list |
2630 | ||
c005fb4f JS |
2631 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
2632 | con_log(CL_ANN, (KERN_WARNING | |
2633 | "megaraid: IOCTL packet with %d[%d:%d] being reset\n", | |
2634 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 | 2635 | |
c005fb4f | 2636 | scb->status = -1; |
1da177e4 | 2637 | |
c005fb4f JS |
2638 | kioc = (uioc_t *)scb->gp; |
2639 | kioc->status = -EFAULT; | |
2640 | ||
2641 | megaraid_mbox_mm_done(adapter, scb); | |
2642 | } else { | |
2643 | if (scb->scp == scp) { // Found command | |
2644 | con_log(CL_ANN, (KERN_WARNING | |
2645 | "megaraid: %ld:%d[%d:%d], reset from pending list\n", | |
2646 | scp->serial_number, scb->sno, | |
2647 | scb->dev_channel, scb->dev_target)); | |
2648 | } else { | |
2649 | con_log(CL_ANN, (KERN_WARNING | |
2650 | "megaraid: IO packet with %d[%d:%d] being reset\n", | |
2651 | scb->sno, scb->dev_channel, scb->dev_target)); | |
2652 | } | |
2653 | ||
2654 | scb->scp->result = (DID_RESET << 16); | |
2655 | scb->scp->scsi_done(scb->scp); | |
2656 | ||
2657 | megaraid_dealloc_scb(adapter, scb); | |
2658 | } | |
1da177e4 LT |
2659 | } |
2660 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2661 | ||
2662 | if (adapter->outstanding_cmds) { | |
2663 | con_log(CL_ANN, (KERN_NOTICE | |
2664 | "megaraid: %d outstanding commands. Max wait %d sec\n", | |
c005fb4f JS |
2665 | adapter->outstanding_cmds, |
2666 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT))); | |
1da177e4 LT |
2667 | } |
2668 | ||
1da177e4 LT |
2669 | recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
2670 | ||
2671 | recovering = adapter->outstanding_cmds; | |
2672 | ||
c005fb4f | 2673 | for (i = 0; i < recovery_window; i++) { |
1da177e4 LT |
2674 | |
2675 | megaraid_ack_sequence(adapter); | |
2676 | ||
2677 | // print a message once every 5 seconds only | |
2678 | if (!(i % 5)) { | |
2679 | con_log(CL_ANN, ( | |
2680 | "megaraid mbox: Wait for %d commands to complete:%d\n", | |
2681 | adapter->outstanding_cmds, | |
c005fb4f | 2682 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); |
1da177e4 LT |
2683 | } |
2684 | ||
2685 | // bailout if no recovery happended in reset time | |
c005fb4f | 2686 | if (adapter->outstanding_cmds == 0) { |
1da177e4 LT |
2687 | break; |
2688 | } | |
2689 | ||
2690 | msleep(1000); | |
2691 | } | |
2692 | ||
f2c8dc40 | 2693 | spin_lock(&adapter->lock); |
1da177e4 LT |
2694 | |
2695 | // If still outstanding commands, bail out | |
2696 | if (adapter->outstanding_cmds) { | |
2697 | con_log(CL_ANN, (KERN_WARNING | |
2698 | "megaraid mbox: critical hardware error!\n")); | |
2699 | ||
2700 | raid_dev->hw_error = 1; | |
2701 | ||
f2c8dc40 CH |
2702 | rval = FAILED; |
2703 | goto out; | |
1da177e4 LT |
2704 | } |
2705 | else { | |
2706 | con_log(CL_ANN, (KERN_NOTICE | |
af901ca1 | 2707 | "megaraid mbox: reset sequence completed successfully\n")); |
1da177e4 LT |
2708 | } |
2709 | ||
2710 | ||
2711 | // If the controller supports clustering, reset reservations | |
f2c8dc40 CH |
2712 | if (!adapter->ha) { |
2713 | rval = SUCCESS; | |
2714 | goto out; | |
2715 | } | |
1da177e4 LT |
2716 | |
2717 | // clear reservations if any | |
2718 | raw_mbox[0] = CLUSTER_CMD; | |
2719 | raw_mbox[2] = RESET_RESERVATIONS; | |
2720 | ||
2721 | rval = SUCCESS; | |
2722 | if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { | |
2723 | con_log(CL_ANN, | |
2724 | (KERN_INFO "megaraid: reservation reset\n")); | |
2725 | } | |
2726 | else { | |
2727 | rval = FAILED; | |
2728 | con_log(CL_ANN, (KERN_WARNING | |
2729 | "megaraid: reservation reset failed\n")); | |
2730 | } | |
2731 | ||
f2c8dc40 CH |
2732 | out: |
2733 | spin_unlock_irq(&adapter->lock); | |
1da177e4 LT |
2734 | return rval; |
2735 | } | |
2736 | ||
1da177e4 LT |
2737 | /* |
2738 | * START: internal commands library | |
2739 | * | |
2740 | * This section of the driver has the common routine used by the driver and | |
2741 | * also has all the FW routines | |
2742 | */ | |
2743 | ||
2744 | /** | |
2745 | * mbox_post_sync_cmd() - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2746 | * @adapter : controller's soft state |
2747 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2748 | * |
2749 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
a69b74d3 | 2750 | * controllers. |
1da177e4 LT |
2751 | */ |
2752 | static int | |
2753 | mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) | |
2754 | { | |
2755 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2756 | mbox64_t *mbox64; | |
2757 | mbox_t *mbox; | |
2758 | uint8_t status; | |
2759 | int i; | |
2760 | ||
2761 | ||
2762 | mbox64 = raid_dev->mbox64; | |
2763 | mbox = raid_dev->mbox; | |
2764 | ||
2765 | /* | |
2766 | * Wait until mailbox is free | |
2767 | */ | |
2768 | if (megaraid_busywait_mbox(raid_dev) != 0) | |
2769 | goto blocked_mailbox; | |
2770 | ||
2771 | /* | |
2772 | * Copy mailbox data into host structure | |
2773 | */ | |
2774 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
2775 | mbox->cmdid = 0xFE; | |
2776 | mbox->busy = 1; | |
2777 | mbox->poll = 0; | |
2778 | mbox->ack = 0; | |
2779 | mbox->numstatus = 0xFF; | |
2780 | mbox->status = 0xFF; | |
2781 | ||
2782 | wmb(); | |
2783 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2784 | ||
2785 | // wait for maximum 1 second for status to post. If the status is not | |
2786 | // available within 1 second, assume FW is initializing and wait | |
2787 | // for an extended amount of time | |
2788 | if (mbox->numstatus == 0xFF) { // status not yet available | |
53b3531b | 2789 | udelay(25); |
1da177e4 LT |
2790 | |
2791 | for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { | |
2792 | rmb(); | |
2793 | msleep(1); | |
2794 | } | |
2795 | ||
2796 | ||
2797 | if (i == 1000) { | |
2798 | con_log(CL_ANN, (KERN_NOTICE | |
2799 | "megaraid mailbox: wait for FW to boot ")); | |
2800 | ||
2801 | for (i = 0; (mbox->numstatus == 0xFF) && | |
2802 | (i < MBOX_RESET_WAIT); i++) { | |
2803 | rmb(); | |
2804 | con_log(CL_ANN, ("\b\b\b\b\b[%03d]", | |
2805 | MBOX_RESET_WAIT - i)); | |
2806 | msleep(1000); | |
2807 | } | |
2808 | ||
2809 | if (i == MBOX_RESET_WAIT) { | |
2810 | ||
2811 | con_log(CL_ANN, ( | |
2812 | "\nmegaraid mailbox: status not available\n")); | |
2813 | ||
2814 | return -1; | |
2815 | } | |
2816 | con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); | |
2817 | } | |
2818 | } | |
2819 | ||
2820 | // wait for maximum 1 second for poll semaphore | |
2821 | if (mbox->poll != 0x77) { | |
2822 | udelay(25); | |
2823 | ||
2824 | for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { | |
2825 | rmb(); | |
2826 | msleep(1); | |
2827 | } | |
2828 | ||
2829 | if (i == 1000) { | |
2830 | con_log(CL_ANN, (KERN_WARNING | |
2831 | "megaraid mailbox: could not get poll semaphore\n")); | |
2832 | return -1; | |
2833 | } | |
2834 | } | |
2835 | ||
2836 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2837 | wmb(); | |
2838 | ||
2839 | // wait for maximum 1 second for acknowledgement | |
2840 | if (RDINDOOR(raid_dev) & 0x2) { | |
2841 | udelay(25); | |
2842 | ||
2843 | for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { | |
2844 | rmb(); | |
2845 | msleep(1); | |
2846 | } | |
2847 | ||
2848 | if (i == 1000) { | |
2849 | con_log(CL_ANN, (KERN_WARNING | |
2850 | "megaraid mailbox: could not acknowledge\n")); | |
2851 | return -1; | |
2852 | } | |
2853 | } | |
2854 | mbox->poll = 0; | |
2855 | mbox->ack = 0x77; | |
2856 | ||
2857 | status = mbox->status; | |
2858 | ||
2859 | // invalidate the completed command id array. After command | |
2860 | // completion, firmware would write the valid id. | |
2861 | mbox->numstatus = 0xFF; | |
2862 | mbox->status = 0xFF; | |
2863 | for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { | |
2864 | mbox->completed[i] = 0xFF; | |
2865 | } | |
2866 | ||
2867 | return status; | |
2868 | ||
2869 | blocked_mailbox: | |
2870 | ||
2871 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); | |
2872 | return -1; | |
2873 | } | |
2874 | ||
2875 | ||
2876 | /** | |
2877 | * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2878 | * @adapter : controller's soft state |
2879 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2880 | * |
2881 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
2882 | * controllers. This is a faster version of the synchronous command and | |
a69b74d3 | 2883 | * therefore can be called in interrupt-context as well. |
1da177e4 LT |
2884 | */ |
2885 | static int | |
2886 | mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) | |
2887 | { | |
2888 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2889 | mbox_t *mbox; | |
2890 | long i; | |
2891 | ||
2892 | ||
2893 | mbox = raid_dev->mbox; | |
2894 | ||
2895 | // return immediately if the mailbox is busy | |
2896 | if (mbox->busy) return -1; | |
2897 | ||
2898 | // Copy mailbox data into host structure | |
2899 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); | |
2900 | mbox->cmdid = 0xFE; | |
2901 | mbox->busy = 1; | |
2902 | mbox->poll = 0; | |
2903 | mbox->ack = 0; | |
2904 | mbox->numstatus = 0xFF; | |
2905 | mbox->status = 0xFF; | |
2906 | ||
2907 | wmb(); | |
2908 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2909 | ||
c005fb4f | 2910 | for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) { |
1da177e4 | 2911 | if (mbox->numstatus != 0xFF) break; |
ed7e8ef7 | 2912 | rmb(); |
c005fb4f | 2913 | udelay(MBOX_SYNC_DELAY_200); |
1da177e4 LT |
2914 | } |
2915 | ||
c005fb4f | 2916 | if (i == MBOX_SYNC_WAIT_CNT) { |
1da177e4 LT |
2917 | // We may need to re-calibrate the counter |
2918 | con_log(CL_ANN, (KERN_CRIT | |
2919 | "megaraid: fast sync command timed out\n")); | |
2920 | } | |
2921 | ||
2922 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2923 | wmb(); | |
2924 | ||
2925 | return mbox->status; | |
2926 | } | |
2927 | ||
2928 | ||
2929 | /** | |
2930 | * megaraid_busywait_mbox() - Wait until the controller's mailbox is available | |
a69b74d3 | 2931 | * @raid_dev : RAID device (HBA) soft state |
1da177e4 | 2932 | * |
a69b74d3 RD |
2933 | * Wait until the controller's mailbox is available to accept more commands. |
2934 | * Wait for at most 1 second. | |
1da177e4 LT |
2935 | */ |
2936 | static int | |
2937 | megaraid_busywait_mbox(mraid_device_t *raid_dev) | |
2938 | { | |
2939 | mbox_t *mbox = raid_dev->mbox; | |
2940 | int i = 0; | |
2941 | ||
2942 | if (mbox->busy) { | |
2943 | udelay(25); | |
2944 | for (i = 0; mbox->busy && i < 1000; i++) | |
2945 | msleep(1); | |
2946 | } | |
2947 | ||
2948 | if (i < 1000) return 0; | |
2949 | else return -1; | |
2950 | } | |
2951 | ||
2952 | ||
2953 | /** | |
2954 | * megaraid_mbox_product_info - some static information about the controller | |
a69b74d3 | 2955 | * @adapter : our soft state |
1da177e4 | 2956 | * |
a69b74d3 | 2957 | * Issue commands to the controller to grab some parameters required by our |
1da177e4 LT |
2958 | * caller. |
2959 | */ | |
2960 | static int | |
2961 | megaraid_mbox_product_info(adapter_t *adapter) | |
2962 | { | |
2963 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2964 | mbox_t *mbox; | |
2965 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2966 | mraid_pinfo_t *pinfo; | |
2967 | dma_addr_t pinfo_dma_h; | |
2968 | mraid_inquiry3_t *mraid_inq3; | |
2969 | int i; | |
2970 | ||
2971 | ||
2972 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
2973 | mbox = (mbox_t *)raw_mbox; | |
2974 | ||
2975 | /* | |
2976 | * Issue an ENQUIRY3 command to find out certain adapter parameters, | |
2977 | * e.g., max channels, max commands etc. | |
2978 | */ | |
2979 | pinfo = pci_alloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
2980 | &pinfo_dma_h); | |
2981 | ||
2982 | if (pinfo == NULL) { | |
2983 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 2984 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
2985 | __LINE__)); |
2986 | ||
2987 | return -1; | |
2988 | } | |
2989 | memset(pinfo, 0, sizeof(mraid_pinfo_t)); | |
2990 | ||
2991 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
2992 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
2993 | ||
2994 | raw_mbox[0] = FC_NEW_CONFIG; | |
2995 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; | |
2996 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; | |
2997 | ||
2998 | // Issue the command | |
2999 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3000 | ||
3001 | con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); | |
3002 | ||
3003 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3004 | pinfo, pinfo_dma_h); | |
3005 | ||
3006 | return -1; | |
3007 | } | |
3008 | ||
3009 | /* | |
3010 | * Collect information about state of each physical drive | |
3011 | * attached to the controller. We will expose all the disks | |
3012 | * which are not part of RAID | |
3013 | */ | |
3014 | mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; | |
3015 | for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { | |
3016 | raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; | |
3017 | } | |
3018 | ||
3019 | /* | |
3020 | * Get product info for information like number of channels, | |
3021 | * maximum commands supported. | |
3022 | */ | |
3023 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3024 | mbox->xferaddr = (uint32_t)pinfo_dma_h; | |
3025 | ||
3026 | raw_mbox[0] = FC_NEW_CONFIG; | |
3027 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; | |
3028 | ||
3029 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3030 | ||
3031 | con_log(CL_ANN, (KERN_WARNING | |
3032 | "megaraid: product info failed\n")); | |
3033 | ||
3034 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3035 | pinfo, pinfo_dma_h); | |
3036 | ||
3037 | return -1; | |
3038 | } | |
3039 | ||
3040 | /* | |
3041 | * Setup some parameters for host, as required by our caller | |
3042 | */ | |
3043 | adapter->max_channel = pinfo->nchannels; | |
3044 | ||
3045 | /* | |
3046 | * we will export all the logical drives on a single channel. | |
3047 | * Add 1 since inquires do not come for inititor ID | |
3048 | */ | |
3049 | adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; | |
3050 | adapter->max_lun = 8; // up to 8 LUNs for non-disk devices | |
3051 | ||
3052 | /* | |
3053 | * These are the maximum outstanding commands for the scsi-layer | |
3054 | */ | |
3055 | adapter->max_cmds = MBOX_MAX_SCSI_CMDS; | |
3056 | ||
3057 | memset(adapter->fw_version, 0, VERSION_SIZE); | |
3058 | memset(adapter->bios_version, 0, VERSION_SIZE); | |
3059 | ||
3060 | memcpy(adapter->fw_version, pinfo->fw_version, 4); | |
3061 | adapter->fw_version[4] = 0; | |
3062 | ||
3063 | memcpy(adapter->bios_version, pinfo->bios_version, 4); | |
3064 | adapter->bios_version[4] = 0; | |
3065 | ||
3066 | con_log(CL_ANN, (KERN_NOTICE | |
3067 | "megaraid: fw version:[%s] bios version:[%s]\n", | |
3068 | adapter->fw_version, adapter->bios_version)); | |
3069 | ||
3070 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo, | |
3071 | pinfo_dma_h); | |
3072 | ||
3073 | return 0; | |
3074 | } | |
3075 | ||
3076 | ||
3077 | ||
3078 | /** | |
3079 | * megaraid_mbox_extended_cdb - check for support for extended CDBs | |
a69b74d3 | 3080 | * @adapter : soft state for the controller |
1da177e4 | 3081 | * |
a69b74d3 RD |
3082 | * This routine check whether the controller in question supports extended |
3083 | * ( > 10 bytes ) CDBs. | |
1da177e4 LT |
3084 | */ |
3085 | static int | |
3086 | megaraid_mbox_extended_cdb(adapter_t *adapter) | |
3087 | { | |
3088 | mbox_t *mbox; | |
3089 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3090 | int rval; | |
3091 | ||
3092 | mbox = (mbox_t *)raw_mbox; | |
3093 | ||
3094 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3095 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3096 | ||
3097 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3098 | ||
3099 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3100 | raw_mbox[2] = SUPPORT_EXT_CDB; | |
3101 | ||
3102 | /* | |
3103 | * Issue the command | |
3104 | */ | |
3105 | rval = 0; | |
3106 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3107 | rval = -1; | |
3108 | } | |
3109 | ||
3110 | return rval; | |
3111 | } | |
3112 | ||
3113 | ||
3114 | /** | |
3115 | * megaraid_mbox_support_ha - Do we support clustering | |
a69b74d3 RD |
3116 | * @adapter : soft state for the controller |
3117 | * @init_id : ID of the initiator | |
1da177e4 LT |
3118 | * |
3119 | * Determine if the firmware supports clustering and the ID of the initiator. | |
3120 | */ | |
3121 | static int | |
3122 | megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) | |
3123 | { | |
3124 | mbox_t *mbox; | |
3125 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3126 | int rval; | |
3127 | ||
3128 | ||
3129 | mbox = (mbox_t *)raw_mbox; | |
3130 | ||
3131 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3132 | ||
3133 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3134 | ||
3135 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3136 | ||
3137 | raw_mbox[0] = GET_TARGET_ID; | |
3138 | ||
3139 | // Issue the command | |
3140 | *init_id = 7; | |
3141 | rval = -1; | |
3142 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3143 | ||
3144 | *init_id = *(uint8_t *)adapter->ibuf; | |
3145 | ||
3146 | con_log(CL_ANN, (KERN_INFO | |
3147 | "megaraid: cluster firmware, initiator ID: %d\n", | |
3148 | *init_id)); | |
3149 | ||
3150 | rval = 0; | |
3151 | } | |
3152 | ||
3153 | return rval; | |
3154 | } | |
3155 | ||
3156 | ||
3157 | /** | |
3158 | * megaraid_mbox_support_random_del - Do we support random deletion | |
a69b74d3 | 3159 | * @adapter : soft state for the controller |
1da177e4 | 3160 | * |
a69b74d3 | 3161 | * Determine if the firmware supports random deletion. |
1da177e4 LT |
3162 | * Return: 1 is operation supported, 0 otherwise |
3163 | */ | |
3164 | static int | |
3165 | megaraid_mbox_support_random_del(adapter_t *adapter) | |
3166 | { | |
3167 | mbox_t *mbox; | |
3168 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3169 | int rval; | |
3170 | ||
69cd39e9 HR |
3171 | /* |
3172 | * Newer firmware on Dell CERC expect a different | |
3173 | * random deletion handling, so disable it. | |
3174 | */ | |
3175 | if (adapter->pdev->vendor == PCI_VENDOR_ID_AMI && | |
3176 | adapter->pdev->device == PCI_DEVICE_ID_AMI_MEGARAID3 && | |
3177 | adapter->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL && | |
3178 | adapter->pdev->subsystem_device == PCI_SUBSYS_ID_CERC_ATA100_4CH && | |
3179 | (adapter->fw_version[0] > '6' || | |
3180 | (adapter->fw_version[0] == '6' && | |
3181 | adapter->fw_version[2] > '6') || | |
3182 | (adapter->fw_version[0] == '6' | |
3183 | && adapter->fw_version[2] == '6' | |
3184 | && adapter->fw_version[3] > '1'))) { | |
3185 | con_log(CL_DLEVEL1, ("megaraid: disable random deletion\n")); | |
3186 | return 0; | |
3187 | } | |
1da177e4 LT |
3188 | |
3189 | mbox = (mbox_t *)raw_mbox; | |
3190 | ||
3191 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3192 | ||
3193 | raw_mbox[0] = FC_DEL_LOGDRV; | |
3194 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; | |
3195 | ||
3196 | // Issue the command | |
3197 | rval = 0; | |
3198 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3199 | ||
3200 | con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); | |
3201 | ||
3202 | rval = 1; | |
3203 | } | |
3204 | ||
3205 | return rval; | |
3206 | } | |
3207 | ||
3208 | ||
3209 | /** | |
3210 | * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware | |
a69b74d3 | 3211 | * @adapter : soft state for the controller |
1da177e4 LT |
3212 | * |
3213 | * Find out the maximum number of scatter-gather elements supported by the | |
a69b74d3 | 3214 | * firmware. |
1da177e4 LT |
3215 | */ |
3216 | static int | |
3217 | megaraid_mbox_get_max_sg(adapter_t *adapter) | |
3218 | { | |
3219 | mbox_t *mbox; | |
3220 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3221 | int nsg; | |
3222 | ||
3223 | ||
3224 | mbox = (mbox_t *)raw_mbox; | |
3225 | ||
3226 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3227 | ||
3228 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3229 | ||
3230 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3231 | ||
3232 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3233 | raw_mbox[2] = GET_MAX_SG_SUPPORT; | |
3234 | ||
3235 | // Issue the command | |
3236 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3237 | nsg = *(uint8_t *)adapter->ibuf; | |
3238 | } | |
3239 | else { | |
3240 | nsg = MBOX_DEFAULT_SG_SIZE; | |
3241 | } | |
3242 | ||
3243 | if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; | |
3244 | ||
3245 | return nsg; | |
3246 | } | |
3247 | ||
3248 | ||
3249 | /** | |
3250 | * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels | |
a69b74d3 | 3251 | * @adapter : soft state for the controller |
1da177e4 | 3252 | * |
a69b74d3 RD |
3253 | * Enumerate the RAID and SCSI channels for ROMB platforms so that channels |
3254 | * can be exported as regular SCSI channels. | |
1da177e4 LT |
3255 | */ |
3256 | static void | |
3257 | megaraid_mbox_enum_raid_scsi(adapter_t *adapter) | |
3258 | { | |
3259 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3260 | mbox_t *mbox; | |
3261 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3262 | ||
3263 | ||
3264 | mbox = (mbox_t *)raw_mbox; | |
3265 | ||
3266 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3267 | ||
3268 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3269 | ||
3270 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3271 | ||
3272 | raw_mbox[0] = CHNL_CLASS; | |
3273 | raw_mbox[2] = GET_CHNL_CLASS; | |
3274 | ||
3275 | // Issue the command. If the command fails, all channels are RAID | |
3276 | // channels | |
3277 | raid_dev->channel_class = 0xFF; | |
3278 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3279 | raid_dev->channel_class = *(uint8_t *)adapter->ibuf; | |
3280 | } | |
3281 | ||
3282 | return; | |
3283 | } | |
3284 | ||
3285 | ||
3286 | /** | |
3287 | * megaraid_mbox_flush_cache - flush adapter and disks cache | |
a69b74d3 | 3288 | * @adapter : soft state for the controller |
1da177e4 | 3289 | * |
a69b74d3 | 3290 | * Flush adapter cache followed by disks cache. |
1da177e4 LT |
3291 | */ |
3292 | static void | |
3293 | megaraid_mbox_flush_cache(adapter_t *adapter) | |
3294 | { | |
3295 | mbox_t *mbox; | |
3296 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3297 | ||
3298 | ||
3299 | mbox = (mbox_t *)raw_mbox; | |
3300 | ||
3301 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3302 | ||
3303 | raw_mbox[0] = FLUSH_ADAPTER; | |
3304 | ||
3305 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3306 | con_log(CL_ANN, ("megaraid: flush adapter failed\n")); | |
3307 | } | |
3308 | ||
3309 | raw_mbox[0] = FLUSH_SYSTEM; | |
3310 | ||
3311 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3312 | con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); | |
3313 | } | |
3314 | ||
3315 | return; | |
3316 | } | |
3317 | ||
3318 | ||
cd96d96f SP |
3319 | /** |
3320 | * megaraid_mbox_fire_sync_cmd - fire the sync cmd | |
a69b74d3 | 3321 | * @adapter : soft state for the controller |
cd96d96f | 3322 | * |
a69b74d3 | 3323 | * Clears the pending cmds in FW and reinits its RAID structs. |
cd96d96f SP |
3324 | */ |
3325 | static int | |
3326 | megaraid_mbox_fire_sync_cmd(adapter_t *adapter) | |
3327 | { | |
3328 | mbox_t *mbox; | |
3329 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3330 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3331 | mbox64_t *mbox64; | |
3332 | int status = 0; | |
3333 | int i; | |
3334 | uint32_t dword; | |
3335 | ||
3336 | mbox = (mbox_t *)raw_mbox; | |
3337 | ||
3338 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3339 | ||
3340 | raw_mbox[0] = 0xFF; | |
3341 | ||
3342 | mbox64 = raid_dev->mbox64; | |
3343 | mbox = raid_dev->mbox; | |
3344 | ||
3345 | /* Wait until mailbox is free */ | |
3346 | if (megaraid_busywait_mbox(raid_dev) != 0) { | |
3347 | status = 1; | |
3348 | goto blocked_mailbox; | |
3349 | } | |
3350 | ||
3351 | /* Copy mailbox data into host structure */ | |
3352 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
3353 | mbox->cmdid = 0xFE; | |
3354 | mbox->busy = 1; | |
3355 | mbox->poll = 0; | |
3356 | mbox->ack = 0; | |
3357 | mbox->numstatus = 0; | |
3358 | mbox->status = 0; | |
3359 | ||
3360 | wmb(); | |
3361 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
3362 | ||
3363 | /* Wait for maximum 1 min for status to post. | |
3364 | * If the Firmware SUPPORTS the ABOVE COMMAND, | |
3365 | * mbox->cmd will be set to 0 | |
3366 | * else | |
3367 | * the firmware will reject the command with | |
3368 | * mbox->numstatus set to 1 | |
3369 | */ | |
3370 | ||
3371 | i = 0; | |
3372 | status = 0; | |
3373 | while (!mbox->numstatus && mbox->cmd == 0xFF) { | |
3374 | rmb(); | |
3375 | msleep(1); | |
3376 | i++; | |
3377 | if (i > 1000 * 60) { | |
3378 | status = 1; | |
3379 | break; | |
3380 | } | |
3381 | } | |
3382 | if (mbox->numstatus == 1) | |
3383 | status = 1; /*cmd not supported*/ | |
3384 | ||
3385 | /* Check for interrupt line */ | |
3386 | dword = RDOUTDOOR(raid_dev); | |
3387 | WROUTDOOR(raid_dev, dword); | |
3388 | WRINDOOR(raid_dev,2); | |
3389 | ||
3390 | return status; | |
3391 | ||
3392 | blocked_mailbox: | |
3393 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n")); | |
3394 | return status; | |
3395 | } | |
3396 | ||
1da177e4 LT |
3397 | /** |
3398 | * megaraid_mbox_display_scb - display SCB information, mostly debug purposes | |
a69b74d3 RD |
3399 | * @adapter : controller's soft state |
3400 | * @scb : SCB to be displayed | |
3401 | * @level : debug level for console print | |
1da177e4 LT |
3402 | * |
3403 | * Diplay information about the given SCB iff the current debug level is | |
a69b74d3 | 3404 | * verbose. |
1da177e4 LT |
3405 | */ |
3406 | static void | |
3407 | megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) | |
3408 | { | |
3409 | mbox_ccb_t *ccb; | |
3410 | struct scsi_cmnd *scp; | |
3411 | mbox_t *mbox; | |
3412 | int level; | |
3413 | int i; | |
3414 | ||
3415 | ||
3416 | ccb = (mbox_ccb_t *)scb->ccb; | |
3417 | scp = scb->scp; | |
3418 | mbox = ccb->mbox; | |
3419 | ||
3420 | level = CL_DLEVEL3; | |
3421 | ||
3422 | con_log(level, (KERN_NOTICE | |
3423 | "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, | |
3424 | mbox->cmd, scb->sno)); | |
3425 | ||
3426 | con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", | |
3427 | mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, | |
3428 | mbox->numsge)); | |
3429 | ||
3430 | if (!scp) return; | |
3431 | ||
3432 | con_log(level, (KERN_NOTICE "scsi cmnd: ")); | |
3433 | ||
3434 | for (i = 0; i < scp->cmd_len; i++) { | |
3435 | con_log(level, ("%#2.02x ", scp->cmnd[i])); | |
3436 | } | |
3437 | ||
3438 | con_log(level, ("\n")); | |
3439 | ||
3440 | return; | |
3441 | } | |
3442 | ||
3443 | ||
3444 | /** | |
3445 | * megaraid_mbox_setup_device_map - manage device ids | |
3446 | * @adapter : Driver's soft state | |
3447 | * | |
3448 | * Manange the device ids to have an appropraite mapping between the kernel | |
3449 | * scsi addresses and megaraid scsi and logical drive addresses. We export | |
3450 | * scsi devices on their actual addresses, whereas the logical drives are | |
3451 | * exported on a virtual scsi channel. | |
a69b74d3 | 3452 | */ |
1da177e4 LT |
3453 | static void |
3454 | megaraid_mbox_setup_device_map(adapter_t *adapter) | |
3455 | { | |
3456 | uint8_t c; | |
3457 | uint8_t t; | |
3458 | ||
3459 | /* | |
3460 | * First fill the values on the logical drive channel | |
3461 | */ | |
3462 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3463 | adapter->device_ids[adapter->max_channel][t] = | |
3464 | (t < adapter->init_id) ? t : t - 1; | |
3465 | ||
3466 | adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; | |
3467 | ||
3468 | /* | |
3469 | * Fill the values on the physical devices channels | |
3470 | */ | |
3471 | for (c = 0; c < adapter->max_channel; c++) | |
3472 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3473 | adapter->device_ids[c][t] = (c << 8) | t; | |
3474 | } | |
3475 | ||
3476 | ||
3477 | /* | |
3478 | * END: internal commands library | |
3479 | */ | |
3480 | ||
3481 | /* | |
3482 | * START: Interface for the common management module | |
3483 | * | |
b1c11812 | 3484 | * This is the module, which interfaces with the common management module to |
1da177e4 LT |
3485 | * provide support for ioctl and sysfs |
3486 | */ | |
3487 | ||
3488 | /** | |
b1c11812 | 3489 | * megaraid_cmm_register - register with the management module |
a69b74d3 | 3490 | * @adapter : HBA soft state |
1da177e4 LT |
3491 | * |
3492 | * Register with the management module, which allows applications to issue | |
3493 | * ioctl calls to the drivers. This interface is used by the management module | |
3494 | * to setup sysfs support as well. | |
3495 | */ | |
3496 | static int | |
3497 | megaraid_cmm_register(adapter_t *adapter) | |
3498 | { | |
3499 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3500 | mraid_mmadp_t adp; | |
3501 | scb_t *scb; | |
3502 | mbox_ccb_t *ccb; | |
3503 | int rval; | |
3504 | int i; | |
3505 | ||
3506 | // Allocate memory for the base list of scb for management module. | |
dd00cc48 | 3507 | adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL); |
1da177e4 LT |
3508 | |
3509 | if (adapter->uscb_list == NULL) { | |
3510 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 3511 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
3512 | __LINE__)); |
3513 | return -1; | |
3514 | } | |
1da177e4 LT |
3515 | |
3516 | ||
3517 | // Initialize the synchronization parameters for resources for | |
3518 | // commands for management module | |
3519 | INIT_LIST_HEAD(&adapter->uscb_pool); | |
3520 | ||
3521 | spin_lock_init(USER_FREE_LIST_LOCK(adapter)); | |
3522 | ||
3523 | ||
3524 | ||
3525 | // link all the packets. Note, CCB for commands, coming from the | |
3526 | // commom management module, mailbox physical address are already | |
3527 | // setup by it. We just need placeholder for that in our local command | |
3528 | // control blocks | |
3529 | for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { | |
3530 | ||
3531 | scb = adapter->uscb_list + i; | |
3532 | ccb = raid_dev->uccb_list + i; | |
3533 | ||
3534 | scb->ccb = (caddr_t)ccb; | |
3535 | ccb->mbox64 = raid_dev->umbox64 + i; | |
3536 | ccb->mbox = &ccb->mbox64->mbox32; | |
3537 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
3538 | ||
3539 | scb->gp = 0; | |
3540 | ||
3541 | // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR | |
3542 | // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) | |
3543 | scb->sno = i + MBOX_MAX_SCSI_CMDS; | |
3544 | ||
3545 | scb->scp = NULL; | |
3546 | scb->state = SCB_FREE; | |
3547 | scb->dma_direction = PCI_DMA_NONE; | |
3548 | scb->dma_type = MRAID_DMA_NONE; | |
3549 | scb->dev_channel = -1; | |
3550 | scb->dev_target = -1; | |
3551 | ||
3552 | // put scb in the free pool | |
3553 | list_add_tail(&scb->list, &adapter->uscb_pool); | |
3554 | } | |
3555 | ||
3556 | adp.unique_id = adapter->unique_id; | |
3557 | adp.drvr_type = DRVRTYPE_MBOX; | |
3558 | adp.drvr_data = (unsigned long)adapter; | |
3559 | adp.pdev = adapter->pdev; | |
3560 | adp.issue_uioc = megaraid_mbox_mm_handler; | |
c005fb4f | 3561 | adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
1da177e4 LT |
3562 | adp.max_kioc = MBOX_MAX_USER_CMDS; |
3563 | ||
3564 | if ((rval = mraid_mm_register_adp(&adp)) != 0) { | |
3565 | ||
3566 | con_log(CL_ANN, (KERN_WARNING | |
3567 | "megaraid mbox: did not register with CMM\n")); | |
3568 | ||
3569 | kfree(adapter->uscb_list); | |
3570 | } | |
3571 | ||
3572 | return rval; | |
3573 | } | |
3574 | ||
3575 | ||
3576 | /** | |
b1c11812 | 3577 | * megaraid_cmm_unregister - un-register with the management module |
a69b74d3 | 3578 | * @adapter : HBA soft state |
1da177e4 LT |
3579 | * |
3580 | * Un-register with the management module. | |
3581 | * FIXME: mgmt module must return failure for unregister if it has pending | |
a69b74d3 | 3582 | * commands in LLD. |
1da177e4 LT |
3583 | */ |
3584 | static int | |
3585 | megaraid_cmm_unregister(adapter_t *adapter) | |
3586 | { | |
3587 | kfree(adapter->uscb_list); | |
3588 | mraid_mm_unregister_adp(adapter->unique_id); | |
3589 | return 0; | |
3590 | } | |
3591 | ||
3592 | ||
3593 | /** | |
3594 | * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD | |
a69b74d3 RD |
3595 | * @drvr_data : LLD specific data |
3596 | * @kioc : CMM interface packet | |
3597 | * @action : command action | |
1da177e4 | 3598 | * |
b1c11812 | 3599 | * This routine is invoked whenever the Common Management Module (CMM) has a |
1da177e4 LT |
3600 | * command for us. The 'action' parameter specifies if this is a new command |
3601 | * or otherwise. | |
3602 | */ | |
3603 | static int | |
3604 | megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) | |
3605 | { | |
3606 | adapter_t *adapter; | |
3607 | ||
3608 | if (action != IOCTL_ISSUE) { | |
3609 | con_log(CL_ANN, (KERN_WARNING | |
3610 | "megaraid: unsupported management action:%#2x\n", | |
3611 | action)); | |
3612 | return (-ENOTSUPP); | |
3613 | } | |
3614 | ||
3615 | adapter = (adapter_t *)drvr_data; | |
3616 | ||
3617 | // make sure this adapter is not being detached right now. | |
3618 | if (atomic_read(&adapter->being_detached)) { | |
3619 | con_log(CL_ANN, (KERN_WARNING | |
3620 | "megaraid: reject management request, detaching\n")); | |
3621 | return (-ENODEV); | |
3622 | } | |
3623 | ||
3624 | switch (kioc->opcode) { | |
3625 | ||
3626 | case GET_ADAP_INFO: | |
3627 | ||
3628 | kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) | |
3629 | (unsigned long)kioc->buf_vaddr); | |
3630 | ||
3631 | kioc->done(kioc); | |
3632 | ||
3633 | return kioc->status; | |
3634 | ||
3635 | case MBOX_CMD: | |
3636 | ||
3637 | return megaraid_mbox_mm_command(adapter, kioc); | |
3638 | ||
3639 | default: | |
3640 | kioc->status = (-EINVAL); | |
3641 | kioc->done(kioc); | |
3642 | return (-EINVAL); | |
3643 | } | |
3644 | ||
3645 | return 0; // not reached | |
3646 | } | |
3647 | ||
3648 | /** | |
3649 | * megaraid_mbox_mm_command - issues commands routed through CMM | |
a69b74d3 RD |
3650 | * @adapter : HBA soft state |
3651 | * @kioc : management command packet | |
1da177e4 LT |
3652 | * |
3653 | * Issues commands, which are routed through the management module. | |
3654 | */ | |
3655 | static int | |
3656 | megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) | |
3657 | { | |
3658 | struct list_head *head = &adapter->uscb_pool; | |
3659 | mbox64_t *mbox64; | |
3660 | uint8_t *raw_mbox; | |
3661 | scb_t *scb; | |
3662 | mbox_ccb_t *ccb; | |
3663 | unsigned long flags; | |
3664 | ||
3665 | // detach one scb from free pool | |
3666 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3667 | ||
3668 | if (list_empty(head)) { // should never happen because of CMM | |
3669 | ||
3670 | con_log(CL_ANN, (KERN_WARNING | |
3671 | "megaraid mbox: bug in cmm handler, lost resources\n")); | |
3672 | ||
3673 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3674 | ||
3675 | return (-EINVAL); | |
3676 | } | |
3677 | ||
3678 | scb = list_entry(head->next, scb_t, list); | |
3679 | list_del_init(&scb->list); | |
3680 | ||
3681 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3682 | ||
3683 | scb->state = SCB_ACTIVE; | |
3684 | scb->dma_type = MRAID_DMA_NONE; | |
3685 | scb->dma_direction = PCI_DMA_NONE; | |
3686 | ||
3687 | ccb = (mbox_ccb_t *)scb->ccb; | |
3688 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
3689 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3690 | ||
3691 | memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); | |
3692 | ||
3693 | scb->gp = (unsigned long)kioc; | |
3694 | ||
3695 | /* | |
3696 | * If it is a logdrv random delete operation, we have to wait till | |
3697 | * there are no outstanding cmds at the fw and then issue it directly | |
3698 | */ | |
3699 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3700 | ||
3701 | if (wait_till_fw_empty(adapter)) { | |
3702 | con_log(CL_ANN, (KERN_NOTICE | |
3703 | "megaraid mbox: LD delete, timed out\n")); | |
3704 | ||
3705 | kioc->status = -ETIME; | |
3706 | ||
3707 | scb->status = -1; | |
3708 | ||
3709 | megaraid_mbox_mm_done(adapter, scb); | |
3710 | ||
3711 | return (-ETIME); | |
3712 | } | |
3713 | ||
3714 | INIT_LIST_HEAD(&scb->list); | |
3715 | ||
3716 | scb->state = SCB_ISSUED; | |
3717 | if (mbox_post_cmd(adapter, scb) != 0) { | |
3718 | ||
3719 | con_log(CL_ANN, (KERN_NOTICE | |
3720 | "megaraid mbox: LD delete, mailbox busy\n")); | |
3721 | ||
3722 | kioc->status = -EBUSY; | |
3723 | ||
3724 | scb->status = -1; | |
3725 | ||
3726 | megaraid_mbox_mm_done(adapter, scb); | |
3727 | ||
3728 | return (-EBUSY); | |
3729 | } | |
3730 | ||
3731 | return 0; | |
3732 | } | |
3733 | ||
3734 | // put the command on the pending list and execute | |
3735 | megaraid_mbox_runpendq(adapter, scb); | |
3736 | ||
3737 | return 0; | |
3738 | } | |
3739 | ||
3740 | ||
3741 | static int | |
3742 | wait_till_fw_empty(adapter_t *adapter) | |
3743 | { | |
3744 | unsigned long flags = 0; | |
3745 | int i; | |
3746 | ||
3747 | ||
3748 | /* | |
3749 | * Set the quiescent flag to stop issuing cmds to FW. | |
3750 | */ | |
f2c8dc40 | 3751 | spin_lock_irqsave(&adapter->lock, flags); |
1da177e4 | 3752 | adapter->quiescent++; |
f2c8dc40 | 3753 | spin_unlock_irqrestore(&adapter->lock, flags); |
1da177e4 LT |
3754 | |
3755 | /* | |
3756 | * Wait till there are no more cmds outstanding at FW. Try for at most | |
3757 | * 60 seconds | |
3758 | */ | |
3759 | for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { | |
3760 | con_log(CL_DLEVEL1, (KERN_INFO | |
3761 | "megaraid: FW has %d pending commands\n", | |
3762 | adapter->outstanding_cmds)); | |
3763 | ||
3764 | msleep(1000); | |
3765 | } | |
3766 | ||
3767 | return adapter->outstanding_cmds; | |
3768 | } | |
3769 | ||
3770 | ||
3771 | /** | |
3772 | * megaraid_mbox_mm_done - callback for CMM commands | |
3773 | * @adapter : HBA soft state | |
3774 | * @scb : completed command | |
3775 | * | |
3776 | * Callback routine for internal commands originated from the management | |
3777 | * module. | |
3778 | */ | |
3779 | static void | |
3780 | megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) | |
3781 | { | |
3782 | uioc_t *kioc; | |
3783 | mbox64_t *mbox64; | |
3784 | uint8_t *raw_mbox; | |
3785 | unsigned long flags; | |
3786 | ||
3787 | kioc = (uioc_t *)scb->gp; | |
1da177e4 LT |
3788 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
3789 | mbox64->mbox32.status = scb->status; | |
3790 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3791 | ||
3792 | ||
3793 | // put scb in the free pool | |
3794 | scb->state = SCB_FREE; | |
3795 | scb->scp = NULL; | |
3796 | ||
3797 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3798 | ||
3799 | list_add(&scb->list, &adapter->uscb_pool); | |
3800 | ||
3801 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3802 | ||
3803 | // if a delete logical drive operation succeeded, restart the | |
3804 | // controller | |
3805 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3806 | ||
3807 | adapter->quiescent--; | |
3808 | ||
3809 | megaraid_mbox_runpendq(adapter, NULL); | |
3810 | } | |
3811 | ||
3812 | kioc->done(kioc); | |
3813 | ||
3814 | return; | |
3815 | } | |
3816 | ||
3817 | ||
3818 | /** | |
3819 | * gather_hbainfo - HBA characteristics for the applications | |
a69b74d3 RD |
3820 | * @adapter : HBA soft state |
3821 | * @hinfo : pointer to the caller's host info strucuture | |
1da177e4 LT |
3822 | */ |
3823 | static int | |
3824 | gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) | |
3825 | { | |
3826 | uint8_t dmajor; | |
3827 | ||
3828 | dmajor = megaraid_mbox_version[0]; | |
3829 | ||
3830 | hinfo->pci_vendor_id = adapter->pdev->vendor; | |
3831 | hinfo->pci_device_id = adapter->pdev->device; | |
3832 | hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; | |
3833 | hinfo->subsys_device_id = adapter->pdev->subsystem_device; | |
3834 | ||
3835 | hinfo->pci_bus = adapter->pdev->bus->number; | |
3836 | hinfo->pci_dev_fn = adapter->pdev->devfn; | |
3837 | hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); | |
3838 | hinfo->irq = adapter->host->irq; | |
3839 | hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; | |
3840 | ||
3841 | hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; | |
3842 | hinfo->host_no = adapter->host->host_no; | |
3843 | ||
3844 | return 0; | |
3845 | } | |
3846 | ||
3847 | /* | |
3848 | * END: Interface for the common management module | |
3849 | */ | |
3850 | ||
3851 | ||
3852 | ||
3853 | /** | |
3854 | * megaraid_sysfs_alloc_resources - allocate sysfs related resources | |
a69b74d3 | 3855 | * @adapter : controller's soft state |
1da177e4 LT |
3856 | * |
3857 | * Allocate packets required to issue FW calls whenever the sysfs attributes | |
3858 | * are read. These attributes would require up-to-date information from the | |
3859 | * FW. Also set up resources for mutual exclusion to share these resources and | |
3860 | * the wait queue. | |
3861 | * | |
a69b74d3 RD |
3862 | * Return 0 on success. |
3863 | * Return -ERROR_CODE on failure. | |
1da177e4 LT |
3864 | */ |
3865 | static int | |
3866 | megaraid_sysfs_alloc_resources(adapter_t *adapter) | |
3867 | { | |
3868 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3869 | int rval = 0; | |
3870 | ||
3871 | raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); | |
3872 | ||
3873 | raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); | |
3874 | ||
3875 | raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev, | |
3876 | PAGE_SIZE, &raid_dev->sysfs_buffer_dma); | |
3877 | ||
3878 | if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || | |
3879 | !raid_dev->sysfs_buffer) { | |
3880 | ||
3881 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 3882 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
3883 | __LINE__)); |
3884 | ||
3885 | rval = -ENOMEM; | |
3886 | ||
3887 | megaraid_sysfs_free_resources(adapter); | |
3888 | } | |
3889 | ||
0c2cc433 | 3890 | mutex_init(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3891 | |
3892 | init_waitqueue_head(&raid_dev->sysfs_wait_q); | |
3893 | ||
3894 | return rval; | |
3895 | } | |
3896 | ||
3897 | ||
3898 | /** | |
3899 | * megaraid_sysfs_free_resources - free sysfs related resources | |
a69b74d3 | 3900 | * @adapter : controller's soft state |
1da177e4 LT |
3901 | * |
3902 | * Free packets allocated for sysfs FW commands | |
1da177e4 LT |
3903 | */ |
3904 | static void | |
3905 | megaraid_sysfs_free_resources(adapter_t *adapter) | |
3906 | { | |
3907 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3908 | ||
c9475cb0 JJ |
3909 | kfree(raid_dev->sysfs_uioc); |
3910 | kfree(raid_dev->sysfs_mbox64); | |
1da177e4 LT |
3911 | |
3912 | if (raid_dev->sysfs_buffer) { | |
3913 | pci_free_consistent(adapter->pdev, PAGE_SIZE, | |
3914 | raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); | |
3915 | } | |
3916 | } | |
3917 | ||
3918 | ||
3919 | /** | |
3920 | * megaraid_sysfs_get_ldmap_done - callback for get ldmap | |
a69b74d3 | 3921 | * @uioc : completed packet |
1da177e4 LT |
3922 | * |
3923 | * Callback routine called in the ISR/tasklet context for get ldmap call | |
1da177e4 LT |
3924 | */ |
3925 | static void | |
3926 | megaraid_sysfs_get_ldmap_done(uioc_t *uioc) | |
3927 | { | |
3928 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
3929 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3930 | ||
3931 | uioc->status = 0; | |
3932 | ||
3933 | wake_up(&raid_dev->sysfs_wait_q); | |
3934 | } | |
3935 | ||
3936 | ||
3937 | /** | |
3938 | * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap | |
a69b74d3 | 3939 | * @data : timed out packet |
1da177e4 LT |
3940 | * |
3941 | * Timeout routine to recover and return to application, in case the adapter | |
a69b74d3 RD |
3942 | * has stopped responding. A timeout of 60 seconds for this command seems like |
3943 | * a good value. | |
1da177e4 LT |
3944 | */ |
3945 | static void | |
3946 | megaraid_sysfs_get_ldmap_timeout(unsigned long data) | |
3947 | { | |
3948 | uioc_t *uioc = (uioc_t *)data; | |
3949 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
3950 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3951 | ||
3952 | uioc->status = -ETIME; | |
3953 | ||
3954 | wake_up(&raid_dev->sysfs_wait_q); | |
3955 | } | |
3956 | ||
3957 | ||
3958 | /** | |
3959 | * megaraid_sysfs_get_ldmap - get update logical drive map | |
a69b74d3 | 3960 | * @adapter : controller's soft state |
1da177e4 LT |
3961 | * |
3962 | * This routine will be called whenever user reads the logical drive | |
3963 | * attributes, go get the current logical drive mapping table from the | |
b1c11812 | 3964 | * firmware. We use the management API's to issue commands to the controller. |
1da177e4 LT |
3965 | * |
3966 | * NOTE: The commands issuance functionality is not generalized and | |
3967 | * implemented in context of "get ld map" command only. If required, the | |
3968 | * command issuance logical can be trivially pulled out and implemented as a | |
3969 | * standalone libary. For now, this should suffice since there is no other | |
3970 | * user of this interface. | |
3971 | * | |
a69b74d3 RD |
3972 | * Return 0 on success. |
3973 | * Return -1 on failure. | |
1da177e4 LT |
3974 | */ |
3975 | static int | |
3976 | megaraid_sysfs_get_ldmap(adapter_t *adapter) | |
3977 | { | |
3978 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3979 | uioc_t *uioc; | |
3980 | mbox64_t *mbox64; | |
3981 | mbox_t *mbox; | |
3982 | char *raw_mbox; | |
3983 | struct timer_list sysfs_timer; | |
3984 | struct timer_list *timerp; | |
3985 | caddr_t ldmap; | |
3986 | int rval = 0; | |
3987 | ||
3988 | /* | |
3989 | * Allow only one read at a time to go through the sysfs attributes | |
3990 | */ | |
0c2cc433 | 3991 | mutex_lock(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3992 | |
3993 | uioc = raid_dev->sysfs_uioc; | |
3994 | mbox64 = raid_dev->sysfs_mbox64; | |
3995 | ldmap = raid_dev->sysfs_buffer; | |
3996 | ||
3997 | memset(uioc, 0, sizeof(uioc_t)); | |
3998 | memset(mbox64, 0, sizeof(mbox64_t)); | |
3999 | memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); | |
4000 | ||
4001 | mbox = &mbox64->mbox32; | |
4002 | raw_mbox = (char *)mbox; | |
4003 | uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; | |
4004 | uioc->buf_vaddr = (caddr_t)adapter; | |
4005 | uioc->status = -ENODATA; | |
4006 | uioc->done = megaraid_sysfs_get_ldmap_done; | |
4007 | ||
4008 | /* | |
4009 | * Prepare the mailbox packet to get the current logical drive mapping | |
4010 | * table | |
4011 | */ | |
4012 | mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; | |
4013 | ||
4014 | raw_mbox[0] = FC_DEL_LOGDRV; | |
4015 | raw_mbox[2] = OP_GET_LDID_MAP; | |
4016 | ||
4017 | /* | |
4018 | * Setup a timer to recover from a non-responding controller | |
4019 | */ | |
4020 | timerp = &sysfs_timer; | |
4021 | init_timer(timerp); | |
4022 | ||
4023 | timerp->function = megaraid_sysfs_get_ldmap_timeout; | |
4024 | timerp->data = (unsigned long)uioc; | |
4025 | timerp->expires = jiffies + 60 * HZ; | |
4026 | ||
4027 | add_timer(timerp); | |
4028 | ||
4029 | /* | |
4030 | * Send the command to the firmware | |
4031 | */ | |
4032 | rval = megaraid_mbox_mm_command(adapter, uioc); | |
4033 | ||
4034 | if (rval == 0) { // command successfully issued | |
4035 | wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); | |
4036 | ||
4037 | /* | |
4038 | * Check if the command timed out | |
4039 | */ | |
4040 | if (uioc->status == -ETIME) { | |
4041 | con_log(CL_ANN, (KERN_NOTICE | |
4042 | "megaraid: sysfs get ld map timed out\n")); | |
4043 | ||
4044 | rval = -ETIME; | |
4045 | } | |
4046 | else { | |
4047 | rval = mbox->status; | |
4048 | } | |
4049 | ||
4050 | if (rval == 0) { | |
4051 | memcpy(raid_dev->curr_ldmap, ldmap, | |
4052 | sizeof(raid_dev->curr_ldmap)); | |
4053 | } | |
4054 | else { | |
4055 | con_log(CL_ANN, (KERN_NOTICE | |
4056 | "megaraid: get ld map failed with %x\n", rval)); | |
4057 | } | |
4058 | } | |
4059 | else { | |
4060 | con_log(CL_ANN, (KERN_NOTICE | |
4061 | "megaraid: could not issue ldmap command:%x\n", rval)); | |
4062 | } | |
4063 | ||
4064 | ||
4065 | del_timer_sync(timerp); | |
4066 | ||
0c2cc433 | 4067 | mutex_unlock(&raid_dev->sysfs_mtx); |
1da177e4 LT |
4068 | |
4069 | return rval; | |
4070 | } | |
4071 | ||
4072 | ||
4073 | /** | |
4074 | * megaraid_sysfs_show_app_hndl - display application handle for this adapter | |
a69b74d3 RD |
4075 | * @cdev : class device object representation for the host |
4076 | * @buf : buffer to send data to | |
1da177e4 LT |
4077 | * |
4078 | * Display the handle used by the applications while executing management | |
4079 | * tasks on the adapter. We invoke a management module API to get the adapter | |
4080 | * handle, since we do not interface with applications directly. | |
1da177e4 LT |
4081 | */ |
4082 | static ssize_t | |
ee959b00 TJ |
4083 | megaraid_sysfs_show_app_hndl(struct device *dev, struct device_attribute *attr, |
4084 | char *buf) | |
1da177e4 | 4085 | { |
ee959b00 | 4086 | struct Scsi_Host *shost = class_to_shost(dev); |
1da177e4 LT |
4087 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); |
4088 | uint32_t app_hndl; | |
4089 | ||
4090 | app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); | |
4091 | ||
4092 | return snprintf(buf, 8, "%u\n", app_hndl); | |
4093 | } | |
4094 | ||
4095 | ||
4096 | /** | |
4097 | * megaraid_sysfs_show_ldnum - display the logical drive number for this device | |
a69b74d3 RD |
4098 | * @dev : device object representation for the scsi device |
4099 | * @attr : device attribute to show | |
4100 | * @buf : buffer to send data to | |
1da177e4 LT |
4101 | * |
4102 | * Display the logical drive number for the device in question, if it a valid | |
a69b74d3 RD |
4103 | * logical drive. For physical devices, "-1" is returned. |
4104 | * | |
4105 | * The logical drive number is displayed in following format: | |
1da177e4 LT |
4106 | * |
4107 | * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> | |
1da177e4 | 4108 | * |
a69b74d3 | 4109 | * <int> <int> <int> <int> |
1da177e4 LT |
4110 | */ |
4111 | static ssize_t | |
10523b3b | 4112 | megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4113 | { |
4114 | struct scsi_device *sdev = to_scsi_device(dev); | |
4115 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); | |
4116 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4117 | int scsi_id = -1; | |
4118 | int logical_drv = -1; | |
4119 | int ldid_map = -1; | |
4120 | uint32_t app_hndl = 0; | |
4121 | int mapped_sdev_id; | |
4122 | int rval; | |
4123 | int i; | |
4124 | ||
4125 | if (raid_dev->random_del_supported && | |
4126 | MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { | |
4127 | ||
4128 | rval = megaraid_sysfs_get_ldmap(adapter); | |
4129 | if (rval == 0) { | |
4130 | ||
4131 | for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { | |
4132 | ||
4133 | mapped_sdev_id = sdev->id; | |
4134 | ||
4135 | if (sdev->id > adapter->init_id) { | |
4136 | mapped_sdev_id -= 1; | |
4137 | } | |
4138 | ||
4139 | if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { | |
4140 | ||
4141 | scsi_id = sdev->id; | |
4142 | ||
4143 | logical_drv = i; | |
4144 | ||
4145 | ldid_map = raid_dev->curr_ldmap[i]; | |
4146 | ||
4147 | app_hndl = mraid_mm_adapter_app_handle( | |
4148 | adapter->unique_id); | |
4149 | ||
4150 | break; | |
4151 | } | |
4152 | } | |
4153 | } | |
4154 | else { | |
4155 | con_log(CL_ANN, (KERN_NOTICE | |
4156 | "megaraid: sysfs get ld map failed: %x\n", | |
4157 | rval)); | |
4158 | } | |
4159 | } | |
4160 | ||
4161 | return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, | |
4162 | ldid_map, app_hndl); | |
4163 | } | |
4164 | ||
4165 | ||
4166 | /* | |
4167 | * END: Mailbox Low Level Driver | |
4168 | */ | |
4169 | module_init(megaraid_init); | |
4170 | module_exit(megaraid_exit); | |
4171 | ||
4172 | /* vim: set ts=8 sw=8 tw=78 ai si: */ |