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 | ||
128 | static ssize_t megaraid_sysfs_show_app_hndl(struct class_device *, 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 | ||
303 | static struct pci_driver megaraid_pci_driver_g = { | |
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 | ||
316 | CLASS_DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl, | |
317 | NULL); | |
318 | ||
319 | // Host template initializer for megaraid mbox sysfs device attributes | |
320 | static struct class_device_attribute *megaraid_shost_attrs[] = { | |
321 | &class_device_attr_megaraid_mbox_app_hndl, | |
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 | |
672b2d38 JS |
396 | rval = pci_register_driver(&megaraid_pci_driver_g); |
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 | |
417 | pci_unregister_driver(&megaraid_pci_driver_g); | |
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 | |
429 | * PCI hotplug susbsytem. | |
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 | |
457 | adapter = kmalloc(sizeof(adapter_t), GFP_KERNEL); | |
458 | ||
459 | if (adapter == NULL) { | |
460 | con_log(CL_ANN, (KERN_WARNING | |
461 | "megaraid: out of memory, %s %d.\n", __FUNCTION__, __LINE__)); | |
462 | ||
463 | goto out_probe_one; | |
464 | } | |
465 | memset(adapter, 0, sizeof(adapter_t)); | |
466 | ||
467 | ||
468 | // set up PCI related soft state and other pre-known parameters | |
469 | adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
470 | adapter->irq = pdev->irq; | |
471 | adapter->pdev = pdev; | |
472 | ||
473 | atomic_set(&adapter->being_detached, 0); | |
474 | ||
475 | // Setup the default DMA mask. This would be changed later on | |
476 | // depending on hardware capabilities | |
672b2d38 | 477 | if (pci_set_dma_mask(adapter->pdev, DMA_32BIT_MASK) != 0) { |
1da177e4 LT |
478 | |
479 | con_log(CL_ANN, (KERN_WARNING | |
480 | "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); | |
481 | ||
482 | goto out_free_adapter; | |
483 | } | |
484 | ||
485 | ||
486 | // Initialize the synchronization lock for kernel and LLD | |
487 | spin_lock_init(&adapter->lock); | |
1da177e4 LT |
488 | |
489 | // Initialize the command queues: the list of free SCBs and the list | |
490 | // of pending SCBs. | |
491 | INIT_LIST_HEAD(&adapter->kscb_pool); | |
492 | spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); | |
493 | ||
494 | INIT_LIST_HEAD(&adapter->pend_list); | |
495 | spin_lock_init(PENDING_LIST_LOCK(adapter)); | |
496 | ||
497 | INIT_LIST_HEAD(&adapter->completed_list); | |
498 | spin_lock_init(COMPLETED_LIST_LOCK(adapter)); | |
499 | ||
500 | ||
501 | // Start the mailbox based controller | |
502 | if (megaraid_init_mbox(adapter) != 0) { | |
503 | con_log(CL_ANN, (KERN_WARNING | |
504 | "megaraid: maibox adapter did not initialize\n")); | |
505 | ||
506 | goto out_free_adapter; | |
507 | } | |
508 | ||
509 | // Register with LSI Common Management Module | |
510 | if (megaraid_cmm_register(adapter) != 0) { | |
511 | ||
512 | con_log(CL_ANN, (KERN_WARNING | |
513 | "megaraid: could not register with management module\n")); | |
514 | ||
515 | goto out_fini_mbox; | |
516 | } | |
517 | ||
518 | // setup adapter handle in PCI soft state | |
519 | pci_set_drvdata(pdev, adapter); | |
520 | ||
521 | // attach with scsi mid-layer | |
522 | if (megaraid_io_attach(adapter) != 0) { | |
523 | ||
524 | con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); | |
525 | ||
526 | goto out_cmm_unreg; | |
527 | } | |
528 | ||
529 | return 0; | |
530 | ||
531 | out_cmm_unreg: | |
532 | pci_set_drvdata(pdev, NULL); | |
533 | megaraid_cmm_unregister(adapter); | |
534 | out_fini_mbox: | |
535 | megaraid_fini_mbox(adapter); | |
536 | out_free_adapter: | |
537 | kfree(adapter); | |
538 | out_probe_one: | |
539 | pci_disable_device(pdev); | |
540 | ||
541 | return -ENODEV; | |
542 | } | |
543 | ||
544 | ||
545 | /** | |
a69b74d3 RD |
546 | * megaraid_detach_one - release framework resources and call LLD release routine |
547 | * @pdev : handle for our PCI cofiguration space | |
1da177e4 LT |
548 | * |
549 | * This routine is called during driver unload. We free all the allocated | |
550 | * resources and call the corresponding LLD so that it can also release all | |
551 | * its resources. | |
552 | * | |
a69b74d3 RD |
553 | * This routine is also called from the PCI hotplug system. |
554 | */ | |
1da177e4 LT |
555 | static void |
556 | megaraid_detach_one(struct pci_dev *pdev) | |
557 | { | |
558 | adapter_t *adapter; | |
559 | struct Scsi_Host *host; | |
560 | ||
561 | ||
562 | // Start a rollback on this adapter | |
563 | adapter = pci_get_drvdata(pdev); | |
564 | ||
565 | if (!adapter) { | |
566 | con_log(CL_ANN, (KERN_CRIT | |
567 | "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
568 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
569 | pdev->subsystem_device)); | |
570 | ||
571 | return; | |
572 | } | |
573 | else { | |
574 | con_log(CL_ANN, (KERN_NOTICE | |
575 | "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
576 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
577 | pdev->subsystem_device)); | |
578 | } | |
579 | ||
580 | ||
581 | host = adapter->host; | |
582 | ||
583 | // do not allow any more requests from the management module for this | |
584 | // adapter. | |
585 | // FIXME: How do we account for the request which might still be | |
586 | // pending with us? | |
587 | atomic_set(&adapter->being_detached, 1); | |
588 | ||
589 | // detach from the IO sub-system | |
590 | megaraid_io_detach(adapter); | |
591 | ||
592 | // reset the device state in the PCI structure. We check this | |
593 | // condition when we enter here. If the device state is NULL, | |
594 | // that would mean the device has already been removed | |
595 | pci_set_drvdata(pdev, NULL); | |
596 | ||
597 | // Unregister from common management module | |
598 | // | |
599 | // FIXME: this must return success or failure for conditions if there | |
600 | // is a command pending with LLD or not. | |
601 | megaraid_cmm_unregister(adapter); | |
602 | ||
603 | // finalize the mailbox based controller and release all resources | |
604 | megaraid_fini_mbox(adapter); | |
605 | ||
606 | kfree(adapter); | |
607 | ||
608 | scsi_host_put(host); | |
609 | ||
610 | pci_disable_device(pdev); | |
611 | ||
612 | return; | |
613 | } | |
614 | ||
615 | ||
616 | /** | |
617 | * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA | |
a69b74d3 | 618 | * @pdev : generic driver model device |
1da177e4 | 619 | * |
a69b74d3 | 620 | * Shutdown notification, perform flush cache. |
1da177e4 LT |
621 | */ |
622 | static void | |
5457b6a6 | 623 | megaraid_mbox_shutdown(struct pci_dev *pdev) |
1da177e4 | 624 | { |
5457b6a6 | 625 | adapter_t *adapter = pci_get_drvdata(pdev); |
1da177e4 LT |
626 | static int counter; |
627 | ||
628 | if (!adapter) { | |
629 | con_log(CL_ANN, (KERN_WARNING | |
630 | "megaraid: null device in shutdown\n")); | |
631 | return; | |
632 | } | |
633 | ||
634 | // flush caches now | |
635 | con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", | |
636 | counter++)); | |
637 | ||
638 | megaraid_mbox_flush_cache(adapter); | |
639 | ||
640 | con_log(CL_ANN, ("done\n")); | |
641 | } | |
642 | ||
643 | ||
644 | /** | |
645 | * megaraid_io_attach - attach a device with the IO subsystem | |
a69b74d3 | 646 | * @adapter : controller's soft state |
1da177e4 | 647 | * |
a69b74d3 RD |
648 | * Attach this device with the IO subsystem. |
649 | */ | |
1da177e4 LT |
650 | static int |
651 | megaraid_io_attach(adapter_t *adapter) | |
652 | { | |
653 | struct Scsi_Host *host; | |
654 | ||
655 | // Initialize SCSI Host structure | |
656 | host = scsi_host_alloc(&megaraid_template_g, 8); | |
657 | if (!host) { | |
658 | con_log(CL_ANN, (KERN_WARNING | |
659 | "megaraid mbox: scsi_register failed\n")); | |
660 | ||
661 | return -1; | |
662 | } | |
663 | ||
664 | SCSIHOST2ADAP(host) = (caddr_t)adapter; | |
665 | adapter->host = host; | |
666 | ||
1da177e4 LT |
667 | host->irq = adapter->irq; |
668 | host->unique_id = adapter->unique_id; | |
669 | host->can_queue = adapter->max_cmds; | |
670 | host->this_id = adapter->init_id; | |
671 | host->sg_tablesize = adapter->sglen; | |
672 | host->max_sectors = adapter->max_sectors; | |
673 | host->cmd_per_lun = adapter->cmd_per_lun; | |
674 | host->max_channel = adapter->max_channel; | |
675 | host->max_id = adapter->max_target; | |
676 | host->max_lun = adapter->max_lun; | |
677 | ||
678 | ||
679 | // notify mid-layer about the new controller | |
680 | if (scsi_add_host(host, &adapter->pdev->dev)) { | |
681 | ||
682 | con_log(CL_ANN, (KERN_WARNING | |
683 | "megaraid mbox: scsi_add_host failed\n")); | |
684 | ||
685 | scsi_host_put(host); | |
686 | ||
687 | return -1; | |
688 | } | |
689 | ||
690 | scsi_scan_host(host); | |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
695 | ||
696 | /** | |
697 | * megaraid_io_detach - detach a device from the IO subsystem | |
a69b74d3 | 698 | * @adapter : controller's soft state |
1da177e4 | 699 | * |
a69b74d3 RD |
700 | * Detach this device from the IO subsystem. |
701 | */ | |
1da177e4 LT |
702 | static void |
703 | megaraid_io_detach(adapter_t *adapter) | |
704 | { | |
705 | struct Scsi_Host *host; | |
706 | ||
707 | con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); | |
708 | ||
709 | host = adapter->host; | |
710 | ||
711 | scsi_remove_host(host); | |
712 | ||
713 | return; | |
714 | } | |
715 | ||
716 | ||
717 | /* | |
718 | * START: Mailbox Low Level Driver | |
719 | * | |
720 | * This is section specific to the single mailbox based controllers | |
721 | */ | |
722 | ||
723 | /** | |
724 | * megaraid_init_mbox - initialize controller | |
a69b74d3 | 725 | * @adapter : our soft state |
1da177e4 | 726 | * |
a69b74d3 RD |
727 | * - Allocate 16-byte aligned mailbox memory for firmware handshake |
728 | * - Allocate controller's memory resources | |
729 | * - Find out all initialization data | |
730 | * - Allocate memory required for all the commands | |
731 | * - Use internal library of FW routines, build up complete soft state | |
1da177e4 | 732 | */ |
cedfb178 | 733 | static int __devinit |
1da177e4 LT |
734 | megaraid_init_mbox(adapter_t *adapter) |
735 | { | |
736 | struct pci_dev *pdev; | |
737 | mraid_device_t *raid_dev; | |
738 | int i; | |
fbf60802 | 739 | uint32_t magic64; |
1da177e4 LT |
740 | |
741 | ||
742 | adapter->ito = MBOX_TIMEOUT; | |
743 | pdev = adapter->pdev; | |
744 | ||
745 | /* | |
746 | * Allocate and initialize the init data structure for mailbox | |
747 | * controllers | |
748 | */ | |
749 | raid_dev = kmalloc(sizeof(mraid_device_t), GFP_KERNEL); | |
750 | if (raid_dev == NULL) return -1; | |
751 | ||
752 | memset(raid_dev, 0, sizeof(mraid_device_t)); | |
753 | ||
754 | /* | |
755 | * Attach the adapter soft state to raid device soft state | |
756 | */ | |
757 | adapter->raid_device = (caddr_t)raid_dev; | |
758 | raid_dev->fast_load = megaraid_fast_load; | |
759 | ||
760 | ||
761 | // our baseport | |
762 | raid_dev->baseport = pci_resource_start(pdev, 0); | |
763 | ||
764 | if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { | |
765 | ||
766 | con_log(CL_ANN, (KERN_WARNING | |
767 | "megaraid: mem region busy\n")); | |
768 | ||
769 | goto out_free_raid_dev; | |
770 | } | |
771 | ||
772 | raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); | |
773 | ||
774 | if (!raid_dev->baseaddr) { | |
775 | ||
776 | con_log(CL_ANN, (KERN_WARNING | |
777 | "megaraid: could not map hba memory\n") ); | |
778 | ||
779 | goto out_release_regions; | |
780 | } | |
781 | ||
cd96d96f SP |
782 | /* initialize the mutual exclusion lock for the mailbox */ |
783 | spin_lock_init(&raid_dev->mailbox_lock); | |
784 | ||
785 | /* allocate memory required for commands */ | |
786 | if (megaraid_alloc_cmd_packets(adapter) != 0) | |
787 | goto out_iounmap; | |
1da177e4 | 788 | |
cd96d96f SP |
789 | /* |
790 | * Issue SYNC cmd to flush the pending cmds in the adapter | |
791 | * and initialize its internal state | |
792 | */ | |
793 | ||
794 | if (megaraid_mbox_fire_sync_cmd(adapter)) | |
795 | con_log(CL_ANN, ("megaraid: sync cmd failed\n")); | |
796 | ||
797 | /* | |
798 | * Setup the rest of the soft state using the library of | |
799 | * FW routines | |
800 | */ | |
801 | ||
802 | /* request IRQ and register the interrupt service routine */ | |
1d6f359a | 803 | if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid", |
1da177e4 LT |
804 | adapter)) { |
805 | ||
806 | con_log(CL_ANN, (KERN_WARNING | |
807 | "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); | |
cd96d96f | 808 | goto out_alloc_cmds; |
1da177e4 | 809 | |
1da177e4 LT |
810 | } |
811 | ||
812 | // Product info | |
cd96d96f SP |
813 | if (megaraid_mbox_product_info(adapter) != 0) |
814 | goto out_free_irq; | |
1da177e4 LT |
815 | |
816 | // Do we support extended CDBs | |
817 | adapter->max_cdb_sz = 10; | |
818 | if (megaraid_mbox_extended_cdb(adapter) == 0) { | |
819 | adapter->max_cdb_sz = 16; | |
820 | } | |
821 | ||
822 | /* | |
823 | * Do we support cluster environment, if we do, what is the initiator | |
824 | * id. | |
825 | * NOTE: In a non-cluster aware firmware environment, the LLD should | |
826 | * return 7 as initiator id. | |
827 | */ | |
828 | adapter->ha = 0; | |
829 | adapter->init_id = -1; | |
830 | if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { | |
831 | adapter->ha = 1; | |
832 | } | |
833 | ||
834 | /* | |
835 | * Prepare the device ids array to have the mapping between the kernel | |
836 | * device address and megaraid device address. | |
837 | * We export the physical devices on their actual addresses. The | |
838 | * logical drives are exported on a virtual SCSI channel | |
839 | */ | |
840 | megaraid_mbox_setup_device_map(adapter); | |
841 | ||
842 | // If the firmware supports random deletion, update the device id map | |
843 | if (megaraid_mbox_support_random_del(adapter)) { | |
844 | ||
845 | // Change the logical drives numbers in device_ids array one | |
846 | // slot in device_ids is reserved for target id, that's why | |
847 | // "<=" below | |
848 | for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { | |
849 | adapter->device_ids[adapter->max_channel][i] += 0x80; | |
850 | } | |
851 | adapter->device_ids[adapter->max_channel][adapter->init_id] = | |
852 | 0xFF; | |
853 | ||
854 | raid_dev->random_del_supported = 1; | |
855 | } | |
856 | ||
857 | /* | |
858 | * find out the maximum number of scatter-gather elements supported by | |
859 | * this firmware | |
860 | */ | |
861 | adapter->sglen = megaraid_mbox_get_max_sg(adapter); | |
862 | ||
863 | // enumerate RAID and SCSI channels so that all devices on SCSI | |
864 | // channels can later be exported, including disk devices | |
865 | megaraid_mbox_enum_raid_scsi(adapter); | |
866 | ||
867 | /* | |
868 | * Other parameters required by upper layer | |
869 | * | |
870 | * maximum number of sectors per IO command | |
871 | */ | |
872 | adapter->max_sectors = megaraid_max_sectors; | |
873 | ||
874 | /* | |
875 | * number of queued commands per LUN. | |
876 | */ | |
877 | adapter->cmd_per_lun = megaraid_cmd_per_lun; | |
878 | ||
879 | /* | |
880 | * Allocate resources required to issue FW calls, when sysfs is | |
881 | * accessed | |
882 | */ | |
cd96d96f SP |
883 | if (megaraid_sysfs_alloc_resources(adapter) != 0) |
884 | goto out_free_irq; | |
1da177e4 LT |
885 | |
886 | // Set the DMA mask to 64-bit. All supported controllers as capable of | |
887 | // DMA in this range | |
fbf60802 JS |
888 | pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64); |
889 | ||
890 | if (((magic64 == HBA_SIGNATURE_64_BIT) && | |
891 | ((adapter->pdev->subsystem_device != | |
8741ca71 | 892 | PCI_SUBSYS_ID_MEGARAID_SATA_150_6) && |
fbf60802 JS |
893 | (adapter->pdev->subsystem_device != |
894 | PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) || | |
895 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
896 | adapter->pdev->device == PCI_DEVICE_ID_VERDE) || | |
897 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
898 | adapter->pdev->device == PCI_DEVICE_ID_DOBSON) || | |
899 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
900 | adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) || | |
901 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
902 | adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) || | |
903 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
904 | adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) { | |
905 | if (pci_set_dma_mask(adapter->pdev, DMA_64BIT_MASK)) { | |
906 | con_log(CL_ANN, (KERN_WARNING | |
907 | "megaraid: DMA mask for 64-bit failed\n")); | |
908 | ||
909 | if (pci_set_dma_mask (adapter->pdev, DMA_32BIT_MASK)) { | |
910 | con_log(CL_ANN, (KERN_WARNING | |
911 | "megaraid: 32-bit DMA mask failed\n")); | |
912 | goto out_free_sysfs_res; | |
913 | } | |
914 | } | |
1da177e4 LT |
915 | } |
916 | ||
917 | // setup tasklet for DPC | |
918 | tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, | |
919 | (unsigned long)adapter); | |
920 | ||
921 | con_log(CL_DLEVEL1, (KERN_INFO | |
922 | "megaraid mbox hba successfully initialized\n")); | |
923 | ||
924 | return 0; | |
925 | ||
926 | out_free_sysfs_res: | |
927 | megaraid_sysfs_free_resources(adapter); | |
1da177e4 LT |
928 | out_free_irq: |
929 | free_irq(adapter->irq, adapter); | |
cd96d96f SP |
930 | out_alloc_cmds: |
931 | megaraid_free_cmd_packets(adapter); | |
1da177e4 LT |
932 | out_iounmap: |
933 | iounmap(raid_dev->baseaddr); | |
934 | out_release_regions: | |
935 | pci_release_regions(pdev); | |
936 | out_free_raid_dev: | |
937 | kfree(raid_dev); | |
938 | ||
939 | return -1; | |
940 | } | |
941 | ||
942 | ||
943 | /** | |
944 | * megaraid_fini_mbox - undo controller initialization | |
a69b74d3 | 945 | * @adapter : our soft state |
1da177e4 LT |
946 | */ |
947 | static void | |
948 | megaraid_fini_mbox(adapter_t *adapter) | |
949 | { | |
950 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
951 | ||
952 | // flush all caches | |
953 | megaraid_mbox_flush_cache(adapter); | |
954 | ||
955 | tasklet_kill(&adapter->dpc_h); | |
956 | ||
957 | megaraid_sysfs_free_resources(adapter); | |
958 | ||
959 | megaraid_free_cmd_packets(adapter); | |
960 | ||
961 | free_irq(adapter->irq, adapter); | |
962 | ||
963 | iounmap(raid_dev->baseaddr); | |
964 | ||
965 | pci_release_regions(adapter->pdev); | |
966 | ||
967 | kfree(raid_dev); | |
968 | ||
969 | return; | |
970 | } | |
971 | ||
972 | ||
973 | /** | |
974 | * megaraid_alloc_cmd_packets - allocate shared mailbox | |
a69b74d3 | 975 | * @adapter : soft state of the raid controller |
1da177e4 LT |
976 | * |
977 | * Allocate and align the shared mailbox. This maibox is used to issue | |
978 | * all the commands. For IO based controllers, the mailbox is also regsitered | |
979 | * with the FW. Allocate memory for all commands as well. | |
a69b74d3 | 980 | * This is our big allocator. |
1da177e4 LT |
981 | */ |
982 | static int | |
983 | megaraid_alloc_cmd_packets(adapter_t *adapter) | |
984 | { | |
985 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
986 | struct pci_dev *pdev; | |
987 | unsigned long align; | |
988 | scb_t *scb; | |
989 | mbox_ccb_t *ccb; | |
990 | struct mraid_pci_blk *epthru_pci_blk; | |
991 | struct mraid_pci_blk *sg_pci_blk; | |
992 | struct mraid_pci_blk *mbox_pci_blk; | |
993 | int i; | |
994 | ||
995 | pdev = adapter->pdev; | |
996 | ||
997 | /* | |
998 | * Setup the mailbox | |
999 | * Allocate the common 16-byte aligned memory for the handshake | |
1000 | * mailbox. | |
1001 | */ | |
1002 | raid_dev->una_mbox64 = pci_alloc_consistent(adapter->pdev, | |
1003 | sizeof(mbox64_t), &raid_dev->una_mbox64_dma); | |
1004 | ||
1005 | if (!raid_dev->una_mbox64) { | |
1006 | con_log(CL_ANN, (KERN_WARNING | |
1007 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
1008 | __LINE__)); | |
1009 | return -1; | |
1010 | } | |
1011 | memset(raid_dev->una_mbox64, 0, sizeof(mbox64_t)); | |
1012 | ||
1013 | /* | |
1014 | * Align the mailbox at 16-byte boundary | |
1015 | */ | |
1016 | raid_dev->mbox = &raid_dev->una_mbox64->mbox32; | |
1017 | ||
1018 | raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & | |
1019 | (~0UL ^ 0xFUL)); | |
1020 | ||
1021 | raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); | |
1022 | ||
1023 | align = ((void *)raid_dev->mbox - | |
1024 | ((void *)&raid_dev->una_mbox64->mbox32)); | |
1025 | ||
1026 | raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + | |
1027 | align; | |
1028 | ||
1029 | // Allocate memory for commands issued internally | |
1030 | adapter->ibuf = pci_alloc_consistent(pdev, MBOX_IBUF_SIZE, | |
1031 | &adapter->ibuf_dma_h); | |
1032 | if (!adapter->ibuf) { | |
1033 | ||
1034 | con_log(CL_ANN, (KERN_WARNING | |
1035 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
1036 | __LINE__)); | |
1037 | ||
1038 | goto out_free_common_mbox; | |
1039 | } | |
1040 | memset(adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
1041 | ||
1042 | // Allocate memory for our SCSI Command Blocks and their associated | |
1043 | // memory | |
1044 | ||
1045 | /* | |
1046 | * Allocate memory for the base list of scb. Later allocate memory for | |
1047 | * CCBs and embedded components of each CCB and point the pointers in | |
1048 | * scb to the allocated components | |
1049 | * NOTE: The code to allocate SCB will be duplicated in all the LLD | |
1050 | * since the calling routine does not yet know the number of available | |
1051 | * commands. | |
1052 | */ | |
1053 | adapter->kscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_SCSI_CMDS, | |
1054 | GFP_KERNEL); | |
1055 | ||
1056 | if (adapter->kscb_list == NULL) { | |
1057 | con_log(CL_ANN, (KERN_WARNING | |
1058 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
1059 | __LINE__)); | |
1060 | goto out_free_ibuf; | |
1061 | } | |
1062 | memset(adapter->kscb_list, 0, sizeof(scb_t) * MBOX_MAX_SCSI_CMDS); | |
1063 | ||
1064 | // memory allocation for our command packets | |
1065 | if (megaraid_mbox_setup_dma_pools(adapter) != 0) { | |
1066 | con_log(CL_ANN, (KERN_WARNING | |
1067 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
1068 | __LINE__)); | |
1069 | goto out_free_scb_list; | |
1070 | } | |
1071 | ||
1072 | // Adjust the scb pointers and link in the free pool | |
1073 | epthru_pci_blk = raid_dev->epthru_pool; | |
1074 | sg_pci_blk = raid_dev->sg_pool; | |
1075 | mbox_pci_blk = raid_dev->mbox_pool; | |
1076 | ||
1077 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1078 | scb = adapter->kscb_list + i; | |
1079 | ccb = raid_dev->ccb_list + i; | |
1080 | ||
1081 | ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); | |
1082 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
1083 | ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); | |
1084 | ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; | |
1085 | ||
1086 | // make sure the mailbox is aligned properly | |
1087 | if (ccb->mbox_dma_h & 0x0F) { | |
1088 | con_log(CL_ANN, (KERN_CRIT | |
1089 | "megaraid mbox: not aligned on 16-bytes\n")); | |
1090 | ||
1091 | goto out_teardown_dma_pools; | |
1092 | } | |
1093 | ||
1094 | ccb->epthru = (mraid_epassthru_t *) | |
1095 | epthru_pci_blk[i].vaddr; | |
1096 | ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; | |
1097 | ccb->pthru = (mraid_passthru_t *)ccb->epthru; | |
1098 | ccb->pthru_dma_h = ccb->epthru_dma_h; | |
1099 | ||
1100 | ||
1101 | ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; | |
1102 | ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; | |
1103 | ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; | |
1104 | ||
1105 | scb->ccb = (caddr_t)ccb; | |
1106 | scb->gp = 0; | |
1107 | ||
1108 | scb->sno = i; // command index | |
1109 | ||
1110 | scb->scp = NULL; | |
1111 | scb->state = SCB_FREE; | |
1112 | scb->dma_direction = PCI_DMA_NONE; | |
1113 | scb->dma_type = MRAID_DMA_NONE; | |
1114 | scb->dev_channel = -1; | |
1115 | scb->dev_target = -1; | |
1116 | ||
1117 | // put scb in the free pool | |
1118 | list_add_tail(&scb->list, &adapter->kscb_pool); | |
1119 | } | |
1120 | ||
1121 | return 0; | |
1122 | ||
1123 | out_teardown_dma_pools: | |
1124 | megaraid_mbox_teardown_dma_pools(adapter); | |
1125 | out_free_scb_list: | |
1126 | kfree(adapter->kscb_list); | |
1127 | out_free_ibuf: | |
1128 | pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, | |
1129 | adapter->ibuf_dma_h); | |
1130 | out_free_common_mbox: | |
1131 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1132 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1133 | ||
1134 | return -1; | |
1135 | } | |
1136 | ||
1137 | ||
1138 | /** | |
1139 | * megaraid_free_cmd_packets - free memory | |
a69b74d3 | 1140 | * @adapter : soft state of the raid controller |
1da177e4 | 1141 | * |
a69b74d3 | 1142 | * Release memory resources allocated for commands. |
1da177e4 LT |
1143 | */ |
1144 | static void | |
1145 | megaraid_free_cmd_packets(adapter_t *adapter) | |
1146 | { | |
1147 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1148 | ||
1149 | megaraid_mbox_teardown_dma_pools(adapter); | |
1150 | ||
1151 | kfree(adapter->kscb_list); | |
1152 | ||
1153 | pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE, | |
1154 | (void *)adapter->ibuf, adapter->ibuf_dma_h); | |
1155 | ||
1156 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1157 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1158 | return; | |
1159 | } | |
1160 | ||
1161 | ||
1162 | /** | |
1163 | * megaraid_mbox_setup_dma_pools - setup dma pool for command packets | |
a69b74d3 | 1164 | * @adapter : HBA soft state |
1da177e4 | 1165 | * |
a69b74d3 RD |
1166 | * Setup the dma pools for mailbox, passthru and extended passthru structures, |
1167 | * and scatter-gather lists. | |
1da177e4 LT |
1168 | */ |
1169 | static int | |
1170 | megaraid_mbox_setup_dma_pools(adapter_t *adapter) | |
1171 | { | |
1172 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1173 | struct mraid_pci_blk *epthru_pci_blk; | |
1174 | struct mraid_pci_blk *sg_pci_blk; | |
1175 | struct mraid_pci_blk *mbox_pci_blk; | |
1176 | int i; | |
1177 | ||
1178 | ||
1179 | ||
1180 | // Allocate memory for 16-bytes aligned mailboxes | |
1181 | raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool", | |
1182 | adapter->pdev, | |
1183 | sizeof(mbox64_t) + 16, | |
1184 | 16, 0); | |
1185 | ||
1186 | if (raid_dev->mbox_pool_handle == NULL) { | |
1187 | goto fail_setup_dma_pool; | |
1188 | } | |
1189 | ||
1190 | mbox_pci_blk = raid_dev->mbox_pool; | |
1191 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1192 | mbox_pci_blk[i].vaddr = pci_pool_alloc( | |
1193 | raid_dev->mbox_pool_handle, | |
1194 | GFP_KERNEL, | |
1195 | &mbox_pci_blk[i].dma_addr); | |
1196 | if (!mbox_pci_blk[i].vaddr) { | |
1197 | goto fail_setup_dma_pool; | |
1198 | } | |
1199 | } | |
1200 | ||
1201 | /* | |
1202 | * Allocate memory for each embedded passthru strucuture pointer | |
1203 | * Request for a 128 bytes aligned structure for each passthru command | |
1204 | * structure | |
1205 | * Since passthru and extended passthru commands are exclusive, they | |
1206 | * share common memory pool. Passthru structures piggyback on memory | |
1207 | * allocted to extended passthru since passthru is smaller of the two | |
1208 | */ | |
1209 | raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru", | |
1210 | adapter->pdev, sizeof(mraid_epassthru_t), 128, 0); | |
1211 | ||
1212 | if (raid_dev->epthru_pool_handle == NULL) { | |
1213 | goto fail_setup_dma_pool; | |
1214 | } | |
1215 | ||
1216 | epthru_pci_blk = raid_dev->epthru_pool; | |
1217 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1218 | epthru_pci_blk[i].vaddr = pci_pool_alloc( | |
1219 | raid_dev->epthru_pool_handle, | |
1220 | GFP_KERNEL, | |
1221 | &epthru_pci_blk[i].dma_addr); | |
1222 | if (!epthru_pci_blk[i].vaddr) { | |
1223 | goto fail_setup_dma_pool; | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | ||
1228 | // Allocate memory for each scatter-gather list. Request for 512 bytes | |
1229 | // alignment for each sg list | |
1230 | raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg", | |
1231 | adapter->pdev, | |
1232 | sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, | |
1233 | 512, 0); | |
1234 | ||
1235 | if (raid_dev->sg_pool_handle == NULL) { | |
1236 | goto fail_setup_dma_pool; | |
1237 | } | |
1238 | ||
1239 | sg_pci_blk = raid_dev->sg_pool; | |
1240 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1241 | sg_pci_blk[i].vaddr = pci_pool_alloc( | |
1242 | raid_dev->sg_pool_handle, | |
1243 | GFP_KERNEL, | |
1244 | &sg_pci_blk[i].dma_addr); | |
1245 | if (!sg_pci_blk[i].vaddr) { | |
1246 | goto fail_setup_dma_pool; | |
1247 | } | |
1248 | } | |
1249 | ||
1250 | return 0; | |
1251 | ||
1252 | fail_setup_dma_pool: | |
1253 | megaraid_mbox_teardown_dma_pools(adapter); | |
1254 | return -1; | |
1255 | } | |
1256 | ||
1257 | ||
1258 | /** | |
1259 | * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets | |
a69b74d3 | 1260 | * @adapter : HBA soft state |
1da177e4 | 1261 | * |
a69b74d3 RD |
1262 | * Teardown the dma pool for mailbox, passthru and extended passthru |
1263 | * structures, and scatter-gather lists. | |
1da177e4 LT |
1264 | */ |
1265 | static void | |
1266 | megaraid_mbox_teardown_dma_pools(adapter_t *adapter) | |
1267 | { | |
1268 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1269 | struct mraid_pci_blk *epthru_pci_blk; | |
1270 | struct mraid_pci_blk *sg_pci_blk; | |
1271 | struct mraid_pci_blk *mbox_pci_blk; | |
1272 | int i; | |
1273 | ||
1274 | ||
1275 | sg_pci_blk = raid_dev->sg_pool; | |
1276 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { | |
1277 | pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, | |
1278 | sg_pci_blk[i].dma_addr); | |
1279 | } | |
1280 | if (raid_dev->sg_pool_handle) | |
1281 | pci_pool_destroy(raid_dev->sg_pool_handle); | |
1282 | ||
1283 | ||
1284 | epthru_pci_blk = raid_dev->epthru_pool; | |
1285 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { | |
1286 | pci_pool_free(raid_dev->epthru_pool_handle, | |
1287 | epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); | |
1288 | } | |
1289 | if (raid_dev->epthru_pool_handle) | |
1290 | pci_pool_destroy(raid_dev->epthru_pool_handle); | |
1291 | ||
1292 | ||
1293 | mbox_pci_blk = raid_dev->mbox_pool; | |
1294 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { | |
1295 | pci_pool_free(raid_dev->mbox_pool_handle, | |
1296 | mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); | |
1297 | } | |
1298 | if (raid_dev->mbox_pool_handle) | |
1299 | pci_pool_destroy(raid_dev->mbox_pool_handle); | |
1300 | ||
1301 | return; | |
1302 | } | |
1303 | ||
1304 | ||
1305 | /** | |
1306 | * megaraid_alloc_scb - detach and return a scb from the free list | |
1307 | * @adapter : controller's soft state | |
a69b74d3 | 1308 | * @scp : pointer to the scsi command to be executed |
1da177e4 | 1309 | * |
a69b74d3 RD |
1310 | * Return the scb from the head of the free list. %NULL if there are none |
1311 | * available. | |
1312 | */ | |
858119e1 | 1313 | static scb_t * |
1da177e4 LT |
1314 | megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) |
1315 | { | |
1316 | struct list_head *head = &adapter->kscb_pool; | |
1317 | scb_t *scb = NULL; | |
1318 | unsigned long flags; | |
1319 | ||
1320 | // detach scb from free pool | |
1321 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1322 | ||
1323 | if (list_empty(head)) { | |
1324 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1325 | return NULL; | |
1326 | } | |
1327 | ||
1328 | scb = list_entry(head->next, scb_t, list); | |
1329 | list_del_init(&scb->list); | |
1330 | ||
1331 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1332 | ||
1333 | scb->state = SCB_ACTIVE; | |
1334 | scb->scp = scp; | |
1335 | scb->dma_type = MRAID_DMA_NONE; | |
1336 | ||
1337 | return scb; | |
1338 | } | |
1339 | ||
1340 | ||
1341 | /** | |
1342 | * megaraid_dealloc_scb - return the scb to the free pool | |
1343 | * @adapter : controller's soft state | |
1344 | * @scb : scb to be freed | |
1345 | * | |
a69b74d3 | 1346 | * Return the scb back to the free list of scbs. The caller must 'flush' the |
1da177e4 LT |
1347 | * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. |
1348 | * NOTE NOTE: Make sure the scb is not on any list before calling this | |
1349 | * routine. | |
a69b74d3 | 1350 | */ |
1da177e4 LT |
1351 | static inline void |
1352 | megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) | |
1353 | { | |
1354 | unsigned long flags; | |
1355 | ||
1356 | // put scb in the free pool | |
1357 | scb->state = SCB_FREE; | |
1358 | scb->scp = NULL; | |
1359 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1360 | ||
1361 | list_add(&scb->list, &adapter->kscb_pool); | |
1362 | ||
1363 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1364 | ||
1365 | return; | |
1366 | } | |
1367 | ||
1368 | ||
1369 | /** | |
1370 | * megaraid_mbox_mksgl - make the scatter-gather list | |
a69b74d3 RD |
1371 | * @adapter : controller's soft state |
1372 | * @scb : scsi control block | |
1da177e4 | 1373 | * |
a69b74d3 | 1374 | * Prepare the scatter-gather list. |
1da177e4 | 1375 | */ |
858119e1 | 1376 | static int |
1da177e4 LT |
1377 | megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) |
1378 | { | |
1379 | struct scatterlist *sgl; | |
1380 | mbox_ccb_t *ccb; | |
1381 | struct page *page; | |
1382 | unsigned long offset; | |
1383 | struct scsi_cmnd *scp; | |
1384 | int sgcnt; | |
1385 | int i; | |
1386 | ||
1387 | ||
1388 | scp = scb->scp; | |
1389 | ccb = (mbox_ccb_t *)scb->ccb; | |
1390 | ||
1391 | // no mapping required if no data to be transferred | |
1392 | if (!scp->request_buffer || !scp->request_bufflen) | |
1393 | return 0; | |
1394 | ||
1395 | if (!scp->use_sg) { /* scatter-gather list not used */ | |
1396 | ||
1397 | page = virt_to_page(scp->request_buffer); | |
1398 | ||
1399 | offset = ((unsigned long)scp->request_buffer & ~PAGE_MASK); | |
1400 | ||
1401 | ccb->buf_dma_h = pci_map_page(adapter->pdev, page, offset, | |
1402 | scp->request_bufflen, | |
1403 | scb->dma_direction); | |
1404 | scb->dma_type = MRAID_DMA_WBUF; | |
1405 | ||
1406 | /* | |
1407 | * We need to handle special 64-bit commands that need a | |
1408 | * minimum of 1 SG | |
1409 | */ | |
1410 | sgcnt = 1; | |
1411 | ccb->sgl64[0].address = ccb->buf_dma_h; | |
1412 | ccb->sgl64[0].length = scp->request_bufflen; | |
1413 | ||
1414 | return sgcnt; | |
1415 | } | |
1416 | ||
1417 | sgl = (struct scatterlist *)scp->request_buffer; | |
1418 | ||
1419 | // The number of sg elements returned must not exceed our limit | |
1420 | sgcnt = pci_map_sg(adapter->pdev, sgl, scp->use_sg, | |
1421 | scb->dma_direction); | |
1422 | ||
1423 | if (sgcnt > adapter->sglen) { | |
1424 | con_log(CL_ANN, (KERN_CRIT | |
1425 | "megaraid critical: too many sg elements:%d\n", | |
1426 | sgcnt)); | |
1427 | BUG(); | |
1428 | } | |
1429 | ||
1430 | scb->dma_type = MRAID_DMA_WSG; | |
1431 | ||
1432 | for (i = 0; i < sgcnt; i++, sgl++) { | |
1433 | ccb->sgl64[i].address = sg_dma_address(sgl); | |
1434 | ccb->sgl64[i].length = sg_dma_len(sgl); | |
1435 | } | |
1436 | ||
1437 | // Return count of SG nodes | |
1438 | return sgcnt; | |
1439 | } | |
1440 | ||
1441 | ||
1442 | /** | |
1443 | * mbox_post_cmd - issue a mailbox command | |
a69b74d3 RD |
1444 | * @adapter : controller's soft state |
1445 | * @scb : command to be issued | |
1da177e4 | 1446 | * |
a69b74d3 | 1447 | * Post the command to the controller if mailbox is available. |
1da177e4 | 1448 | */ |
858119e1 | 1449 | static int |
1da177e4 LT |
1450 | mbox_post_cmd(adapter_t *adapter, scb_t *scb) |
1451 | { | |
1452 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1453 | mbox64_t *mbox64; | |
1454 | mbox_t *mbox; | |
1455 | mbox_ccb_t *ccb; | |
1456 | unsigned long flags; | |
1457 | unsigned int i = 0; | |
1458 | ||
1459 | ||
1460 | ccb = (mbox_ccb_t *)scb->ccb; | |
1461 | mbox = raid_dev->mbox; | |
1462 | mbox64 = raid_dev->mbox64; | |
1463 | ||
1464 | /* | |
1465 | * Check for busy mailbox. If it is, return failure - the caller | |
1466 | * should retry later. | |
1467 | */ | |
1468 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
1469 | ||
1470 | if (unlikely(mbox->busy)) { | |
1471 | do { | |
1472 | udelay(1); | |
1473 | i++; | |
1474 | rmb(); | |
1475 | } while(mbox->busy && (i < max_mbox_busy_wait)); | |
1476 | ||
1477 | if (mbox->busy) { | |
1478 | ||
1479 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1480 | ||
1481 | return -1; | |
1482 | } | |
1483 | } | |
1484 | ||
1485 | ||
1486 | // Copy this command's mailbox data into "adapter's" mailbox | |
1487 | memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); | |
1488 | mbox->cmdid = scb->sno; | |
1489 | ||
1490 | adapter->outstanding_cmds++; | |
1491 | ||
1492 | if (scb->dma_direction == PCI_DMA_TODEVICE) { | |
1493 | if (!scb->scp->use_sg) { // sg list not used | |
1494 | pci_dma_sync_single_for_device(adapter->pdev, | |
1495 | ccb->buf_dma_h, | |
1496 | scb->scp->request_bufflen, | |
1497 | PCI_DMA_TODEVICE); | |
1498 | } | |
1499 | else { | |
1500 | pci_dma_sync_sg_for_device(adapter->pdev, | |
1501 | scb->scp->request_buffer, | |
1502 | scb->scp->use_sg, PCI_DMA_TODEVICE); | |
1503 | } | |
1504 | } | |
1505 | ||
1506 | mbox->busy = 1; // Set busy | |
1507 | mbox->poll = 0; | |
1508 | mbox->ack = 0; | |
1509 | wmb(); | |
1510 | ||
1511 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
1512 | ||
1513 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1514 | ||
1515 | return 0; | |
1516 | } | |
1517 | ||
1518 | ||
1519 | /** | |
1520 | * megaraid_queue_command - generic queue entry point for all LLDs | |
1521 | * @scp : pointer to the scsi command to be executed | |
1522 | * @done : callback routine to be called after the cmd has be completed | |
1523 | * | |
1524 | * Queue entry point for mailbox based controllers. | |
1525 | */ | |
1526 | static int | |
a69b74d3 | 1527 | megaraid_queue_command(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) |
1da177e4 LT |
1528 | { |
1529 | adapter_t *adapter; | |
1530 | scb_t *scb; | |
1531 | int if_busy; | |
1532 | ||
1533 | adapter = SCP2ADAPTER(scp); | |
1534 | scp->scsi_done = done; | |
1535 | scp->result = 0; | |
1536 | ||
1da177e4 LT |
1537 | /* |
1538 | * Allocate and build a SCB request | |
1539 | * if_busy flag will be set if megaraid_mbox_build_cmd() command could | |
1540 | * not allocate scb. We will return non-zero status in that case. | |
1541 | * NOTE: scb can be null even though certain commands completed | |
1542 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would | |
1543 | * return 0 in that case, and we would do the callback right away. | |
1544 | */ | |
1545 | if_busy = 0; | |
f2c8dc40 | 1546 | scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); |
1da177e4 LT |
1547 | if (!scb) { // command already completed |
1548 | done(scp); | |
1549 | return 0; | |
1550 | } | |
1551 | ||
f2c8dc40 | 1552 | megaraid_mbox_runpendq(adapter, scb); |
1da177e4 LT |
1553 | return if_busy; |
1554 | } | |
1555 | ||
1da177e4 | 1556 | /** |
a69b74d3 RD |
1557 | * megaraid_mbox_build_cmd - transform the mid-layer scsi commands |
1558 | * @adapter : controller's soft state | |
1559 | * @scp : mid-layer scsi command pointer | |
1560 | * @busy : set if request could not be completed because of lack of | |
1da177e4 LT |
1561 | * resources |
1562 | * | |
a69b74d3 RD |
1563 | * Transform the mid-layer scsi command to megaraid firmware lingua. |
1564 | * Convert the command issued by mid-layer to format understood by megaraid | |
1565 | * firmware. We also complete certain commands without sending them to firmware. | |
1da177e4 LT |
1566 | */ |
1567 | static scb_t * | |
1568 | megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) | |
1569 | { | |
1570 | mraid_device_t *rdev = ADAP2RAIDDEV(adapter); | |
1571 | int channel; | |
1572 | int target; | |
1573 | int islogical; | |
1574 | mbox_ccb_t *ccb; | |
1575 | mraid_passthru_t *pthru; | |
1576 | mbox64_t *mbox64; | |
1577 | mbox_t *mbox; | |
1578 | scb_t *scb; | |
1579 | char skip[] = "skipping"; | |
1580 | char scan[] = "scanning"; | |
1581 | char *ss; | |
1582 | ||
1583 | ||
1584 | /* | |
1585 | * Get the appropriate device map for the device this command is | |
1586 | * intended for | |
1587 | */ | |
1588 | MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); | |
1589 | ||
1590 | /* | |
1591 | * Logical drive commands | |
1592 | */ | |
1593 | if (islogical) { | |
1594 | switch (scp->cmnd[0]) { | |
1595 | case TEST_UNIT_READY: | |
1596 | /* | |
1597 | * Do we support clustering and is the support enabled | |
1598 | * If no, return success always | |
1599 | */ | |
1600 | if (!adapter->ha) { | |
1601 | scp->result = (DID_OK << 16); | |
1602 | return NULL; | |
1603 | } | |
1604 | ||
1605 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1606 | scp->result = (DID_ERROR << 16); | |
1607 | *busy = 1; | |
1608 | return NULL; | |
1609 | } | |
1610 | ||
1611 | scb->dma_direction = scp->sc_data_direction; | |
1612 | scb->dev_channel = 0xFF; | |
1613 | scb->dev_target = target; | |
1614 | ccb = (mbox_ccb_t *)scb->ccb; | |
1615 | ||
1616 | /* | |
1617 | * The command id will be provided by the command | |
1618 | * issuance routine | |
1619 | */ | |
1620 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1621 | ccb->raw_mbox[2] = RESERVATION_STATUS; | |
1622 | ccb->raw_mbox[3] = target; | |
1623 | ||
1624 | return scb; | |
1625 | ||
1626 | case MODE_SENSE: | |
1627 | if (scp->use_sg) { | |
1628 | struct scatterlist *sgl; | |
1629 | caddr_t vaddr; | |
1630 | ||
1631 | sgl = (struct scatterlist *)scp->request_buffer; | |
1632 | if (sgl->page) { | |
1633 | vaddr = (caddr_t) | |
1634 | (page_address((&sgl[0])->page) | |
1635 | + (&sgl[0])->offset); | |
1636 | ||
1637 | memset(vaddr, 0, scp->cmnd[4]); | |
1638 | } | |
1639 | else { | |
1640 | con_log(CL_ANN, (KERN_WARNING | |
1641 | "megaraid mailbox: invalid sg:%d\n", | |
1642 | __LINE__)); | |
1643 | } | |
1644 | } | |
1645 | else { | |
1646 | memset(scp->request_buffer, 0, scp->cmnd[4]); | |
1647 | } | |
1648 | scp->result = (DID_OK << 16); | |
1649 | return NULL; | |
1650 | ||
1651 | case INQUIRY: | |
1652 | /* | |
1653 | * Display the channel scan for logical drives | |
1654 | * Do not display scan for a channel if already done. | |
1655 | */ | |
1656 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1657 | ||
1658 | con_log(CL_ANN, (KERN_INFO | |
1659 | "scsi[%d]: scanning scsi channel %d", | |
1660 | adapter->host->host_no, | |
1661 | SCP2CHANNEL(scp))); | |
1662 | ||
1663 | con_log(CL_ANN, ( | |
1664 | " [virtual] for logical drives\n")); | |
1665 | ||
1666 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1667 | } | |
1668 | ||
aa677bc7 JS |
1669 | if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { |
1670 | scp->sense_buffer[0] = 0x70; | |
1671 | scp->sense_buffer[2] = ILLEGAL_REQUEST; | |
1672 | scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; | |
1673 | scp->result = CHECK_CONDITION << 1; | |
1674 | return NULL; | |
1675 | } | |
1676 | ||
1da177e4 LT |
1677 | /* Fall through */ |
1678 | ||
1679 | case READ_CAPACITY: | |
1680 | /* | |
1681 | * Do not allow LUN > 0 for logical drives and | |
1682 | * requests for more than 40 logical drives | |
1683 | */ | |
1684 | if (SCP2LUN(scp)) { | |
1685 | scp->result = (DID_BAD_TARGET << 16); | |
1686 | return NULL; | |
1687 | } | |
1688 | if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { | |
1689 | scp->result = (DID_BAD_TARGET << 16); | |
1690 | return NULL; | |
1691 | } | |
1692 | ||
1693 | ||
1694 | /* Allocate a SCB and initialize passthru */ | |
1695 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1696 | scp->result = (DID_ERROR << 16); | |
1697 | *busy = 1; | |
1698 | return NULL; | |
1699 | } | |
1700 | ||
1701 | ccb = (mbox_ccb_t *)scb->ccb; | |
1702 | scb->dev_channel = 0xFF; | |
1703 | scb->dev_target = target; | |
1704 | pthru = ccb->pthru; | |
1705 | mbox = ccb->mbox; | |
1706 | mbox64 = ccb->mbox64; | |
1707 | ||
1708 | pthru->timeout = 0; | |
1709 | pthru->ars = 1; | |
1710 | pthru->reqsenselen = 14; | |
1711 | pthru->islogical = 1; | |
1712 | pthru->logdrv = target; | |
1713 | pthru->cdblen = scp->cmd_len; | |
1714 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1715 | ||
1716 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1717 | scb->dma_direction = scp->sc_data_direction; | |
1718 | ||
1719 | pthru->dataxferlen = scp->request_bufflen; | |
1720 | pthru->dataxferaddr = ccb->sgl_dma_h; | |
1721 | pthru->numsge = megaraid_mbox_mksgl(adapter, | |
1722 | scb); | |
1723 | ||
1724 | mbox->xferaddr = 0xFFFFFFFF; | |
1725 | mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; | |
1726 | mbox64->xferaddr_hi = 0; | |
1727 | ||
1728 | return scb; | |
1729 | ||
1730 | case READ_6: | |
1731 | case WRITE_6: | |
1732 | case READ_10: | |
1733 | case WRITE_10: | |
1734 | case READ_12: | |
1735 | case WRITE_12: | |
1736 | ||
1737 | /* | |
1738 | * Allocate a SCB and initialize mailbox | |
1739 | */ | |
1740 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1741 | scp->result = (DID_ERROR << 16); | |
1742 | *busy = 1; | |
1743 | return NULL; | |
1744 | } | |
1745 | ccb = (mbox_ccb_t *)scb->ccb; | |
1746 | scb->dev_channel = 0xFF; | |
1747 | scb->dev_target = target; | |
1748 | mbox = ccb->mbox; | |
1749 | mbox64 = ccb->mbox64; | |
1750 | mbox->logdrv = target; | |
1751 | ||
1752 | /* | |
1753 | * A little HACK: 2nd bit is zero for all scsi read | |
1754 | * commands and is set for all scsi write commands | |
1755 | */ | |
1756 | mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: | |
1757 | MBOXCMD_LREAD64 ; | |
1758 | ||
1759 | /* | |
1760 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
1761 | */ | |
1762 | if (scp->cmd_len == 6) { | |
1763 | mbox->numsectors = (uint32_t)scp->cmnd[4]; | |
1764 | mbox->lba = | |
1765 | ((uint32_t)scp->cmnd[1] << 16) | | |
1766 | ((uint32_t)scp->cmnd[2] << 8) | | |
1767 | (uint32_t)scp->cmnd[3]; | |
1768 | ||
1769 | mbox->lba &= 0x1FFFFF; | |
1770 | } | |
1771 | ||
1772 | /* | |
1773 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
1774 | */ | |
1775 | else if (scp->cmd_len == 10) { | |
1776 | mbox->numsectors = | |
1777 | (uint32_t)scp->cmnd[8] | | |
1778 | ((uint32_t)scp->cmnd[7] << 8); | |
1779 | mbox->lba = | |
1780 | ((uint32_t)scp->cmnd[2] << 24) | | |
1781 | ((uint32_t)scp->cmnd[3] << 16) | | |
1782 | ((uint32_t)scp->cmnd[4] << 8) | | |
1783 | (uint32_t)scp->cmnd[5]; | |
1784 | } | |
1785 | ||
1786 | /* | |
1787 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
1788 | */ | |
1789 | else if (scp->cmd_len == 12) { | |
1790 | mbox->lba = | |
1791 | ((uint32_t)scp->cmnd[2] << 24) | | |
1792 | ((uint32_t)scp->cmnd[3] << 16) | | |
1793 | ((uint32_t)scp->cmnd[4] << 8) | | |
1794 | (uint32_t)scp->cmnd[5]; | |
1795 | ||
1796 | mbox->numsectors = | |
1797 | ((uint32_t)scp->cmnd[6] << 24) | | |
1798 | ((uint32_t)scp->cmnd[7] << 16) | | |
1799 | ((uint32_t)scp->cmnd[8] << 8) | | |
1800 | (uint32_t)scp->cmnd[9]; | |
1801 | } | |
1802 | else { | |
1803 | con_log(CL_ANN, (KERN_WARNING | |
1804 | "megaraid: unsupported CDB length\n")); | |
1805 | ||
1806 | megaraid_dealloc_scb(adapter, scb); | |
1807 | ||
1808 | scp->result = (DID_ERROR << 16); | |
1809 | return NULL; | |
1810 | } | |
1811 | ||
1812 | scb->dma_direction = scp->sc_data_direction; | |
1813 | ||
1814 | // Calculate Scatter-Gather info | |
1815 | mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; | |
1816 | mbox->numsge = megaraid_mbox_mksgl(adapter, | |
1817 | scb); | |
1818 | mbox->xferaddr = 0xFFFFFFFF; | |
1819 | mbox64->xferaddr_hi = 0; | |
1820 | ||
1821 | return scb; | |
1822 | ||
1823 | case RESERVE: | |
1824 | case RELEASE: | |
1825 | /* | |
1826 | * Do we support clustering and is the support enabled | |
1827 | */ | |
1828 | if (!adapter->ha) { | |
1829 | scp->result = (DID_BAD_TARGET << 16); | |
1830 | return NULL; | |
1831 | } | |
1832 | ||
1833 | /* | |
1834 | * Allocate a SCB and initialize mailbox | |
1835 | */ | |
1836 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1837 | scp->result = (DID_ERROR << 16); | |
1838 | *busy = 1; | |
1839 | return NULL; | |
1840 | } | |
1841 | ||
1842 | ccb = (mbox_ccb_t *)scb->ccb; | |
1843 | scb->dev_channel = 0xFF; | |
1844 | scb->dev_target = target; | |
1845 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1846 | ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? | |
1847 | RESERVE_LD : RELEASE_LD; | |
1848 | ||
1849 | ccb->raw_mbox[3] = target; | |
1850 | scb->dma_direction = scp->sc_data_direction; | |
1851 | ||
1852 | return scb; | |
1853 | ||
1854 | default: | |
1855 | scp->result = (DID_BAD_TARGET << 16); | |
1856 | return NULL; | |
1857 | } | |
1858 | } | |
1859 | else { // Passthru device commands | |
1860 | ||
1861 | // Do not allow access to target id > 15 or LUN > 7 | |
1862 | if (target > 15 || SCP2LUN(scp) > 7) { | |
1863 | scp->result = (DID_BAD_TARGET << 16); | |
1864 | return NULL; | |
1865 | } | |
1866 | ||
1867 | // if fast load option was set and scan for last device is | |
1868 | // over, reset the fast_load flag so that during a possible | |
1869 | // next scan, devices can be made available | |
1870 | if (rdev->fast_load && (target == 15) && | |
1871 | (SCP2CHANNEL(scp) == adapter->max_channel -1)) { | |
1872 | ||
1873 | con_log(CL_ANN, (KERN_INFO | |
1874 | "megaraid[%d]: physical device scan re-enabled\n", | |
1875 | adapter->host->host_no)); | |
1876 | rdev->fast_load = 0; | |
1877 | } | |
1878 | ||
1879 | /* | |
1880 | * Display the channel scan for physical devices | |
1881 | */ | |
1882 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1883 | ||
1884 | ss = rdev->fast_load ? skip : scan; | |
1885 | ||
1886 | con_log(CL_ANN, (KERN_INFO | |
1887 | "scsi[%d]: %s scsi channel %d [Phy %d]", | |
1888 | adapter->host->host_no, ss, SCP2CHANNEL(scp), | |
1889 | channel)); | |
1890 | ||
1891 | con_log(CL_ANN, ( | |
1892 | " for non-raid devices\n")); | |
1893 | ||
1894 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1895 | } | |
1896 | ||
1897 | // disable channel sweep if fast load option given | |
1898 | if (rdev->fast_load) { | |
1899 | scp->result = (DID_BAD_TARGET << 16); | |
1900 | return NULL; | |
1901 | } | |
1902 | ||
1903 | // Allocate a SCB and initialize passthru | |
1904 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1905 | scp->result = (DID_ERROR << 16); | |
1906 | *busy = 1; | |
1907 | return NULL; | |
1908 | } | |
1909 | ||
1910 | ccb = (mbox_ccb_t *)scb->ccb; | |
1911 | scb->dev_channel = channel; | |
1912 | scb->dev_target = target; | |
1913 | scb->dma_direction = scp->sc_data_direction; | |
1914 | mbox = ccb->mbox; | |
1915 | mbox64 = ccb->mbox64; | |
1916 | ||
1917 | // Does this firmware support extended CDBs | |
1918 | if (adapter->max_cdb_sz == 16) { | |
1919 | mbox->cmd = MBOXCMD_EXTPTHRU; | |
1920 | ||
1921 | megaraid_mbox_prepare_epthru(adapter, scb, scp); | |
1922 | ||
1923 | mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; | |
1924 | mbox64->xferaddr_hi = 0; | |
1925 | mbox->xferaddr = 0xFFFFFFFF; | |
1926 | } | |
1927 | else { | |
1928 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1929 | ||
1930 | megaraid_mbox_prepare_pthru(adapter, scb, scp); | |
1931 | ||
1932 | mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; | |
1933 | mbox64->xferaddr_hi = 0; | |
1934 | mbox->xferaddr = 0xFFFFFFFF; | |
1935 | } | |
1936 | return scb; | |
1937 | } | |
1938 | ||
1939 | // NOT REACHED | |
1940 | } | |
1941 | ||
1942 | ||
1943 | /** | |
1944 | * megaraid_mbox_runpendq - execute commands queued in the pending queue | |
1945 | * @adapter : controller's soft state | |
a69b74d3 | 1946 | * @scb_q : SCB to be queued in the pending list |
1da177e4 | 1947 | * |
a69b74d3 | 1948 | * Scan the pending list for commands which are not yet issued and try to |
1da177e4 LT |
1949 | * post to the controller. The SCB can be a null pointer, which would indicate |
1950 | * no SCB to be queue, just try to execute the ones in the pending list. | |
1951 | * | |
1952 | * NOTE: We do not actually traverse the pending list. The SCBs are plucked | |
1953 | * out from the head of the pending list. If it is successfully issued, the | |
1954 | * next SCB is at the head now. | |
1955 | */ | |
1956 | static void | |
1957 | megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) | |
1958 | { | |
1959 | scb_t *scb; | |
1960 | unsigned long flags; | |
1961 | ||
1962 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1963 | ||
1964 | if (scb_q) { | |
1965 | scb_q->state = SCB_PENDQ; | |
1966 | list_add_tail(&scb_q->list, &adapter->pend_list); | |
1967 | } | |
1968 | ||
1969 | // if the adapter in not in quiescent mode, post the commands to FW | |
1970 | if (adapter->quiescent) { | |
1971 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1972 | return; | |
1973 | } | |
1974 | ||
1975 | while (!list_empty(&adapter->pend_list)) { | |
1976 | ||
1977 | assert_spin_locked(PENDING_LIST_LOCK(adapter)); | |
1978 | ||
1979 | scb = list_entry(adapter->pend_list.next, scb_t, list); | |
1980 | ||
1981 | // remove the scb from the pending list and try to | |
1982 | // issue. If we are unable to issue it, put back in | |
1983 | // the pending list and return | |
1984 | ||
1985 | list_del_init(&scb->list); | |
1986 | ||
1987 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1988 | ||
1989 | // if mailbox was busy, return SCB back to pending | |
1990 | // list. Make sure to add at the head, since that's | |
1991 | // where it would have been removed from | |
1992 | ||
1993 | scb->state = SCB_ISSUED; | |
1994 | ||
1995 | if (mbox_post_cmd(adapter, scb) != 0) { | |
1996 | ||
1997 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1998 | ||
1999 | scb->state = SCB_PENDQ; | |
2000 | ||
2001 | list_add(&scb->list, &adapter->pend_list); | |
2002 | ||
2003 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
2004 | flags); | |
2005 | ||
2006 | return; | |
2007 | } | |
2008 | ||
2009 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2010 | } | |
2011 | ||
2012 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2013 | ||
2014 | ||
2015 | return; | |
2016 | } | |
2017 | ||
2018 | ||
2019 | /** | |
2020 | * megaraid_mbox_prepare_pthru - prepare a command for physical devices | |
a69b74d3 RD |
2021 | * @adapter : pointer to controller's soft state |
2022 | * @scb : scsi control block | |
2023 | * @scp : scsi command from the mid-layer | |
1da177e4 | 2024 | * |
a69b74d3 | 2025 | * Prepare a command for the scsi physical devices. |
1da177e4 LT |
2026 | */ |
2027 | static void | |
2028 | megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, | |
2029 | struct scsi_cmnd *scp) | |
2030 | { | |
2031 | mbox_ccb_t *ccb; | |
2032 | mraid_passthru_t *pthru; | |
2033 | uint8_t channel; | |
2034 | uint8_t target; | |
2035 | ||
2036 | ccb = (mbox_ccb_t *)scb->ccb; | |
2037 | pthru = ccb->pthru; | |
2038 | channel = scb->dev_channel; | |
2039 | target = scb->dev_target; | |
2040 | ||
2041 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
2042 | pthru->timeout = 4; | |
2043 | pthru->ars = 1; | |
2044 | pthru->islogical = 0; | |
2045 | pthru->channel = 0; | |
2046 | pthru->target = (channel << 4) | target; | |
2047 | pthru->logdrv = SCP2LUN(scp); | |
2048 | pthru->reqsenselen = 14; | |
2049 | pthru->cdblen = scp->cmd_len; | |
2050 | ||
2051 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
2052 | ||
2053 | if (scp->request_bufflen) { | |
2054 | pthru->dataxferlen = scp->request_bufflen; | |
2055 | pthru->dataxferaddr = ccb->sgl_dma_h; | |
2056 | pthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2057 | } | |
2058 | else { | |
2059 | pthru->dataxferaddr = 0; | |
2060 | pthru->dataxferlen = 0; | |
2061 | pthru->numsge = 0; | |
2062 | } | |
2063 | return; | |
2064 | } | |
2065 | ||
2066 | ||
2067 | /** | |
2068 | * megaraid_mbox_prepare_epthru - prepare a command for physical devices | |
a69b74d3 RD |
2069 | * @adapter : pointer to controller's soft state |
2070 | * @scb : scsi control block | |
2071 | * @scp : scsi command from the mid-layer | |
1da177e4 | 2072 | * |
a69b74d3 RD |
2073 | * Prepare a command for the scsi physical devices. This rountine prepares |
2074 | * commands for devices which can take extended CDBs (>10 bytes). | |
1da177e4 LT |
2075 | */ |
2076 | static void | |
2077 | megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, | |
2078 | struct scsi_cmnd *scp) | |
2079 | { | |
2080 | mbox_ccb_t *ccb; | |
2081 | mraid_epassthru_t *epthru; | |
2082 | uint8_t channel; | |
2083 | uint8_t target; | |
2084 | ||
2085 | ccb = (mbox_ccb_t *)scb->ccb; | |
2086 | epthru = ccb->epthru; | |
2087 | channel = scb->dev_channel; | |
2088 | target = scb->dev_target; | |
2089 | ||
2090 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
2091 | epthru->timeout = 4; | |
2092 | epthru->ars = 1; | |
2093 | epthru->islogical = 0; | |
2094 | epthru->channel = 0; | |
2095 | epthru->target = (channel << 4) | target; | |
2096 | epthru->logdrv = SCP2LUN(scp); | |
2097 | epthru->reqsenselen = 14; | |
2098 | epthru->cdblen = scp->cmd_len; | |
2099 | ||
2100 | memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); | |
2101 | ||
2102 | if (scp->request_bufflen) { | |
2103 | epthru->dataxferlen = scp->request_bufflen; | |
2104 | epthru->dataxferaddr = ccb->sgl_dma_h; | |
2105 | epthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2106 | } | |
2107 | else { | |
2108 | epthru->dataxferaddr = 0; | |
2109 | epthru->dataxferlen = 0; | |
2110 | epthru->numsge = 0; | |
2111 | } | |
2112 | return; | |
2113 | } | |
2114 | ||
2115 | ||
2116 | /** | |
2117 | * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs | |
a69b74d3 | 2118 | * @adapter : controller's soft state |
1da177e4 | 2119 | * |
a69b74d3 | 2120 | * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the |
1da177e4 LT |
2121 | * completed command and put them on the completed list for later processing. |
2122 | * | |
2123 | * Returns: 1 if the interrupt is valid, 0 otherwise | |
2124 | */ | |
858119e1 | 2125 | static int |
1da177e4 LT |
2126 | megaraid_ack_sequence(adapter_t *adapter) |
2127 | { | |
2128 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2129 | mbox_t *mbox; | |
2130 | scb_t *scb; | |
2131 | uint8_t nstatus; | |
2132 | uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; | |
2133 | struct list_head clist; | |
2134 | int handled; | |
2135 | uint32_t dword; | |
2136 | unsigned long flags; | |
2137 | int i, j; | |
2138 | ||
2139 | ||
2140 | mbox = raid_dev->mbox; | |
2141 | ||
2142 | // move the SCBs from the firmware completed array to our local list | |
2143 | INIT_LIST_HEAD(&clist); | |
2144 | ||
2145 | // loop till F/W has more commands for us to complete | |
2146 | handled = 0; | |
2147 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
2148 | do { | |
2149 | /* | |
2150 | * Check if a valid interrupt is pending. If found, force the | |
2151 | * interrupt line low. | |
2152 | */ | |
2153 | dword = RDOUTDOOR(raid_dev); | |
2154 | if (dword != 0x10001234) break; | |
2155 | ||
2156 | handled = 1; | |
2157 | ||
2158 | WROUTDOOR(raid_dev, 0x10001234); | |
2159 | ||
2160 | nstatus = 0; | |
2161 | // wait for valid numstatus to post | |
2162 | for (i = 0; i < 0xFFFFF; i++) { | |
2163 | if (mbox->numstatus != 0xFF) { | |
2164 | nstatus = mbox->numstatus; | |
2165 | break; | |
2166 | } | |
2167 | rmb(); | |
2168 | } | |
2169 | mbox->numstatus = 0xFF; | |
2170 | ||
2171 | adapter->outstanding_cmds -= nstatus; | |
2172 | ||
2173 | for (i = 0; i < nstatus; i++) { | |
2174 | ||
2175 | // wait for valid command index to post | |
2176 | for (j = 0; j < 0xFFFFF; j++) { | |
2177 | if (mbox->completed[i] != 0xFF) break; | |
2178 | rmb(); | |
2179 | } | |
2180 | completed[i] = mbox->completed[i]; | |
2181 | mbox->completed[i] = 0xFF; | |
2182 | ||
2183 | if (completed[i] == 0xFF) { | |
2184 | con_log(CL_ANN, (KERN_CRIT | |
2185 | "megaraid: command posting timed out\n")); | |
2186 | ||
2187 | BUG(); | |
2188 | continue; | |
2189 | } | |
2190 | ||
2191 | // Get SCB associated with this command id | |
2192 | if (completed[i] >= MBOX_MAX_SCSI_CMDS) { | |
2193 | // a cmm command | |
2194 | scb = adapter->uscb_list + (completed[i] - | |
2195 | MBOX_MAX_SCSI_CMDS); | |
2196 | } | |
2197 | else { | |
2198 | // an os command | |
2199 | scb = adapter->kscb_list + completed[i]; | |
2200 | } | |
2201 | ||
2202 | scb->status = mbox->status; | |
2203 | list_add_tail(&scb->list, &clist); | |
2204 | } | |
2205 | ||
2206 | // Acknowledge interrupt | |
2207 | WRINDOOR(raid_dev, 0x02); | |
2208 | ||
2209 | } while(1); | |
2210 | ||
2211 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
2212 | ||
2213 | ||
2214 | // put the completed commands in the completed list. DPC would | |
2215 | // complete these commands later | |
2216 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2217 | ||
2218 | list_splice(&clist, &adapter->completed_list); | |
2219 | ||
2220 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2221 | ||
2222 | ||
2223 | // schedule the DPC if there is some work for it | |
2224 | if (handled) | |
2225 | tasklet_schedule(&adapter->dpc_h); | |
2226 | ||
2227 | return handled; | |
2228 | } | |
2229 | ||
2230 | ||
2231 | /** | |
2232 | * megaraid_isr - isr for memory based mailbox based controllers | |
a69b74d3 RD |
2233 | * @irq : irq |
2234 | * @devp : pointer to our soft state | |
1da177e4 LT |
2235 | * |
2236 | * Interrupt service routine for memory-mapped mailbox controllers. | |
2237 | */ | |
2238 | static irqreturn_t | |
7d12e780 | 2239 | megaraid_isr(int irq, void *devp) |
1da177e4 LT |
2240 | { |
2241 | adapter_t *adapter = devp; | |
2242 | int handled; | |
2243 | ||
2244 | handled = megaraid_ack_sequence(adapter); | |
2245 | ||
2246 | /* Loop through any pending requests */ | |
2247 | if (!adapter->quiescent) { | |
2248 | megaraid_mbox_runpendq(adapter, NULL); | |
2249 | } | |
2250 | ||
2251 | return IRQ_RETVAL(handled); | |
2252 | } | |
2253 | ||
2254 | ||
2255 | /** | |
2256 | * megaraid_mbox_sync_scb - sync kernel buffers | |
2257 | * @adapter : controller's soft state | |
2258 | * @scb : pointer to the resource packet | |
2259 | * | |
2260 | * DMA sync if required. | |
2261 | */ | |
858119e1 | 2262 | static void |
1da177e4 LT |
2263 | megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb) |
2264 | { | |
2265 | mbox_ccb_t *ccb; | |
2266 | ||
2267 | ccb = (mbox_ccb_t *)scb->ccb; | |
2268 | ||
2269 | switch (scb->dma_type) { | |
2270 | ||
2271 | case MRAID_DMA_WBUF: | |
2272 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) { | |
2273 | pci_dma_sync_single_for_cpu(adapter->pdev, | |
2274 | ccb->buf_dma_h, | |
2275 | scb->scp->request_bufflen, | |
2276 | PCI_DMA_FROMDEVICE); | |
2277 | } | |
2278 | ||
2279 | pci_unmap_page(adapter->pdev, ccb->buf_dma_h, | |
2280 | scb->scp->request_bufflen, scb->dma_direction); | |
2281 | ||
2282 | break; | |
2283 | ||
2284 | case MRAID_DMA_WSG: | |
2285 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) { | |
2286 | pci_dma_sync_sg_for_cpu(adapter->pdev, | |
2287 | scb->scp->request_buffer, | |
2288 | scb->scp->use_sg, PCI_DMA_FROMDEVICE); | |
2289 | } | |
2290 | ||
2291 | pci_unmap_sg(adapter->pdev, scb->scp->request_buffer, | |
2292 | scb->scp->use_sg, scb->dma_direction); | |
2293 | ||
2294 | break; | |
2295 | ||
2296 | default: | |
2297 | break; | |
2298 | } | |
2299 | ||
2300 | return; | |
2301 | } | |
2302 | ||
2303 | ||
2304 | /** | |
2305 | * megaraid_mbox_dpc - the tasklet to complete the commands from completed list | |
2306 | * @devp : pointer to HBA soft state | |
2307 | * | |
2308 | * Pick up the commands from the completed list and send back to the owners. | |
2309 | * This is a reentrant function and does not assume any locks are held while | |
2310 | * it is being called. | |
2311 | */ | |
2312 | static void | |
2313 | megaraid_mbox_dpc(unsigned long devp) | |
2314 | { | |
2315 | adapter_t *adapter = (adapter_t *)devp; | |
2316 | mraid_device_t *raid_dev; | |
2317 | struct list_head clist; | |
2318 | struct scatterlist *sgl; | |
2319 | scb_t *scb; | |
2320 | scb_t *tmp; | |
2321 | struct scsi_cmnd *scp; | |
2322 | mraid_passthru_t *pthru; | |
2323 | mraid_epassthru_t *epthru; | |
2324 | mbox_ccb_t *ccb; | |
2325 | int islogical; | |
2326 | int pdev_index; | |
2327 | int pdev_state; | |
2328 | mbox_t *mbox; | |
2329 | unsigned long flags; | |
2330 | uint8_t c; | |
2331 | int status; | |
c005fb4f | 2332 | uioc_t *kioc; |
1da177e4 LT |
2333 | |
2334 | ||
2335 | if (!adapter) return; | |
2336 | ||
2337 | raid_dev = ADAP2RAIDDEV(adapter); | |
2338 | ||
2339 | // move the SCBs from the completed list to our local list | |
2340 | INIT_LIST_HEAD(&clist); | |
2341 | ||
2342 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2343 | ||
2344 | list_splice_init(&adapter->completed_list, &clist); | |
2345 | ||
2346 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2347 | ||
2348 | ||
2349 | list_for_each_entry_safe(scb, tmp, &clist, list) { | |
2350 | ||
2351 | status = scb->status; | |
2352 | scp = scb->scp; | |
2353 | ccb = (mbox_ccb_t *)scb->ccb; | |
2354 | pthru = ccb->pthru; | |
2355 | epthru = ccb->epthru; | |
2356 | mbox = ccb->mbox; | |
2357 | ||
2358 | // Make sure f/w has completed a valid command | |
2359 | if (scb->state != SCB_ISSUED) { | |
2360 | con_log(CL_ANN, (KERN_CRIT | |
2361 | "megaraid critical err: invalid command %d:%d:%p\n", | |
2362 | scb->sno, scb->state, scp)); | |
2363 | BUG(); | |
2364 | continue; // Must never happen! | |
2365 | } | |
2366 | ||
2367 | // check for the management command and complete it right away | |
2368 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { | |
2369 | scb->state = SCB_FREE; | |
2370 | scb->status = status; | |
2371 | ||
2372 | // remove from local clist | |
2373 | list_del_init(&scb->list); | |
2374 | ||
c005fb4f JS |
2375 | kioc = (uioc_t *)scb->gp; |
2376 | kioc->status = 0; | |
2377 | ||
1da177e4 LT |
2378 | megaraid_mbox_mm_done(adapter, scb); |
2379 | ||
2380 | continue; | |
2381 | } | |
2382 | ||
2383 | // Was an abort issued for this command earlier | |
2384 | if (scb->state & SCB_ABORT) { | |
2385 | con_log(CL_ANN, (KERN_NOTICE | |
2386 | "megaraid: aborted cmd %lx[%x] completed\n", | |
2387 | scp->serial_number, scb->sno)); | |
2388 | } | |
2389 | ||
2390 | /* | |
2391 | * If the inquiry came of a disk drive which is not part of | |
2392 | * any RAID array, expose it to the kernel. For this to be | |
2393 | * enabled, user must set the "megaraid_expose_unconf_disks" | |
2394 | * flag to 1 by specifying it on module parameter list. | |
2395 | * This would enable data migration off drives from other | |
2396 | * configurations. | |
2397 | */ | |
2398 | islogical = MRAID_IS_LOGICAL(adapter, scp); | |
2399 | if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 | |
2400 | && IS_RAID_CH(raid_dev, scb->dev_channel)) { | |
2401 | ||
2402 | if (scp->use_sg) { | |
2403 | sgl = (struct scatterlist *) | |
2404 | scp->request_buffer; | |
2405 | ||
2406 | if (sgl->page) { | |
2407 | c = *(unsigned char *) | |
2408 | (page_address((&sgl[0])->page) + | |
2409 | (&sgl[0])->offset); | |
2410 | } | |
2411 | else { | |
2412 | con_log(CL_ANN, (KERN_WARNING | |
2413 | "megaraid mailbox: invalid sg:%d\n", | |
2414 | __LINE__)); | |
2415 | c = 0; | |
2416 | } | |
2417 | } | |
2418 | else { | |
2419 | c = *(uint8_t *)scp->request_buffer; | |
2420 | } | |
2421 | ||
2422 | if ((c & 0x1F ) == TYPE_DISK) { | |
2423 | pdev_index = (scb->dev_channel * 16) + | |
2424 | scb->dev_target; | |
2425 | pdev_state = | |
2426 | raid_dev->pdrv_state[pdev_index] & 0x0F; | |
2427 | ||
2428 | if (pdev_state == PDRV_ONLINE || | |
2429 | pdev_state == PDRV_FAILED || | |
2430 | pdev_state == PDRV_RBLD || | |
2431 | pdev_state == PDRV_HOTSPARE || | |
2432 | megaraid_expose_unconf_disks == 0) { | |
2433 | ||
2434 | status = 0xF0; | |
2435 | } | |
2436 | } | |
2437 | } | |
2438 | ||
2439 | // Convert MegaRAID status to Linux error code | |
2440 | switch (status) { | |
2441 | ||
2442 | case 0x00: | |
2443 | ||
2444 | scp->result = (DID_OK << 16); | |
2445 | break; | |
2446 | ||
2447 | case 0x02: | |
2448 | ||
2449 | /* set sense_buffer and result fields */ | |
2450 | if (mbox->cmd == MBOXCMD_PASSTHRU || | |
2451 | mbox->cmd == MBOXCMD_PASSTHRU64) { | |
2452 | ||
2453 | memcpy(scp->sense_buffer, pthru->reqsensearea, | |
2454 | 14); | |
2455 | ||
2456 | scp->result = DRIVER_SENSE << 24 | | |
2457 | DID_OK << 16 | CHECK_CONDITION << 1; | |
2458 | } | |
2459 | else { | |
2460 | if (mbox->cmd == MBOXCMD_EXTPTHRU) { | |
2461 | ||
2462 | memcpy(scp->sense_buffer, | |
2463 | epthru->reqsensearea, 14); | |
2464 | ||
2465 | scp->result = DRIVER_SENSE << 24 | | |
2466 | DID_OK << 16 | | |
2467 | CHECK_CONDITION << 1; | |
2468 | } else { | |
2469 | scp->sense_buffer[0] = 0x70; | |
2470 | scp->sense_buffer[2] = ABORTED_COMMAND; | |
2471 | scp->result = CHECK_CONDITION << 1; | |
2472 | } | |
2473 | } | |
2474 | break; | |
2475 | ||
2476 | case 0x08: | |
2477 | ||
2478 | scp->result = DID_BUS_BUSY << 16 | status; | |
2479 | break; | |
2480 | ||
2481 | default: | |
2482 | ||
2483 | /* | |
2484 | * If TEST_UNIT_READY fails, we know RESERVATION_STATUS | |
2485 | * failed | |
2486 | */ | |
2487 | if (scp->cmnd[0] == TEST_UNIT_READY) { | |
2488 | scp->result = DID_ERROR << 16 | | |
2489 | RESERVATION_CONFLICT << 1; | |
2490 | } | |
2491 | else | |
2492 | /* | |
2493 | * Error code returned is 1 if Reserve or Release | |
2494 | * failed or the input parameter is invalid | |
2495 | */ | |
2496 | if (status == 1 && (scp->cmnd[0] == RESERVE || | |
2497 | scp->cmnd[0] == RELEASE)) { | |
2498 | ||
2499 | scp->result = DID_ERROR << 16 | | |
2500 | RESERVATION_CONFLICT << 1; | |
2501 | } | |
2502 | else { | |
2503 | scp->result = DID_BAD_TARGET << 16 | status; | |
2504 | } | |
2505 | } | |
2506 | ||
2507 | // print a debug message for all failed commands | |
2508 | if (status) { | |
2509 | megaraid_mbox_display_scb(adapter, scb); | |
2510 | } | |
2511 | ||
2512 | // Free our internal resources and call the mid-layer callback | |
2513 | // routine | |
2514 | megaraid_mbox_sync_scb(adapter, scb); | |
2515 | ||
2516 | // remove from local clist | |
2517 | list_del_init(&scb->list); | |
2518 | ||
2519 | // put back in free list | |
2520 | megaraid_dealloc_scb(adapter, scb); | |
2521 | ||
2522 | // send the scsi packet back to kernel | |
1da177e4 | 2523 | scp->scsi_done(scp); |
1da177e4 LT |
2524 | } |
2525 | ||
2526 | return; | |
2527 | } | |
2528 | ||
2529 | ||
2530 | /** | |
2531 | * megaraid_abort_handler - abort the scsi command | |
2532 | * @scp : command to be aborted | |
2533 | * | |
2534 | * Abort a previous SCSI request. Only commands on the pending list can be | |
2535 | * aborted. All the commands issued to the F/W must complete. | |
2536 | **/ | |
2537 | static int | |
f2c8dc40 | 2538 | megaraid_abort_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2539 | { |
2540 | adapter_t *adapter; | |
2541 | mraid_device_t *raid_dev; | |
2542 | scb_t *scb; | |
2543 | scb_t *tmp; | |
2544 | int found; | |
2545 | unsigned long flags; | |
2546 | int i; | |
2547 | ||
2548 | ||
2549 | adapter = SCP2ADAPTER(scp); | |
2550 | raid_dev = ADAP2RAIDDEV(adapter); | |
2551 | ||
1da177e4 LT |
2552 | con_log(CL_ANN, (KERN_WARNING |
2553 | "megaraid: aborting-%ld cmd=%x <c=%d t=%d l=%d>\n", | |
2554 | scp->serial_number, scp->cmnd[0], SCP2CHANNEL(scp), | |
2555 | SCP2TARGET(scp), SCP2LUN(scp))); | |
2556 | ||
2557 | // If FW has stopped responding, simply return failure | |
2558 | if (raid_dev->hw_error) { | |
2559 | con_log(CL_ANN, (KERN_NOTICE | |
2560 | "megaraid: hw error, not aborting\n")); | |
2561 | return FAILED; | |
2562 | } | |
2563 | ||
2564 | // There might a race here, where the command was completed by the | |
2565 | // firmware and now it is on the completed list. Before we could | |
2566 | // complete the command to the kernel in dpc, the abort came. | |
2567 | // Find out if this is the case to avoid the race. | |
2568 | scb = NULL; | |
2569 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2570 | list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { | |
2571 | ||
2572 | if (scb->scp == scp) { // Found command | |
2573 | ||
2574 | list_del_init(&scb->list); // from completed list | |
2575 | ||
2576 | con_log(CL_ANN, (KERN_WARNING | |
2577 | "megaraid: %ld:%d[%d:%d], abort from completed list\n", | |
2578 | scp->serial_number, scb->sno, | |
2579 | scb->dev_channel, scb->dev_target)); | |
2580 | ||
2581 | scp->result = (DID_ABORT << 16); | |
2582 | scp->scsi_done(scp); | |
2583 | ||
2584 | megaraid_dealloc_scb(adapter, scb); | |
2585 | ||
2586 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), | |
2587 | flags); | |
2588 | ||
2589 | return SUCCESS; | |
2590 | } | |
2591 | } | |
2592 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2593 | ||
2594 | ||
2595 | // Find out if this command is still on the pending list. If it is and | |
2596 | // was never issued, abort and return success. If the command is owned | |
2597 | // by the firmware, we must wait for it to complete by the FW. | |
2598 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2599 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
2600 | ||
2601 | if (scb->scp == scp) { // Found command | |
2602 | ||
2603 | list_del_init(&scb->list); // from pending list | |
2604 | ||
2605 | ASSERT(!(scb->state & SCB_ISSUED)); | |
2606 | ||
2607 | con_log(CL_ANN, (KERN_WARNING | |
2608 | "megaraid abort: %ld[%d:%d], driver owner\n", | |
2609 | scp->serial_number, scb->dev_channel, | |
2610 | scb->dev_target)); | |
2611 | ||
2612 | scp->result = (DID_ABORT << 16); | |
2613 | scp->scsi_done(scp); | |
2614 | ||
2615 | megaraid_dealloc_scb(adapter, scb); | |
2616 | ||
2617 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
2618 | flags); | |
2619 | ||
2620 | return SUCCESS; | |
2621 | } | |
2622 | } | |
2623 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2624 | ||
2625 | ||
2626 | // Check do we even own this command, in which case this would be | |
2627 | // owned by the firmware. The only way to locate the FW scb is to | |
2628 | // traverse through the list of all SCB, since driver does not | |
2629 | // maintain these SCBs on any list | |
2630 | found = 0; | |
f2c8dc40 | 2631 | spin_lock_irq(&adapter->lock); |
1da177e4 LT |
2632 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
2633 | scb = adapter->kscb_list + i; | |
2634 | ||
2635 | if (scb->scp == scp) { | |
2636 | ||
2637 | found = 1; | |
2638 | ||
2639 | if (!(scb->state & SCB_ISSUED)) { | |
2640 | con_log(CL_ANN, (KERN_WARNING | |
2641 | "megaraid abort: %ld%d[%d:%d], invalid state\n", | |
2642 | scp->serial_number, scb->sno, scb->dev_channel, | |
2643 | scb->dev_target)); | |
2644 | BUG(); | |
2645 | } | |
2646 | else { | |
2647 | con_log(CL_ANN, (KERN_WARNING | |
2648 | "megaraid abort: %ld:%d[%d:%d], fw owner\n", | |
2649 | scp->serial_number, scb->sno, scb->dev_channel, | |
2650 | scb->dev_target)); | |
2651 | } | |
2652 | } | |
2653 | } | |
f2c8dc40 | 2654 | spin_unlock_irq(&adapter->lock); |
1da177e4 LT |
2655 | |
2656 | if (!found) { | |
2657 | con_log(CL_ANN, (KERN_WARNING | |
2658 | "megaraid abort: scsi cmd:%ld, do now own\n", | |
2659 | scp->serial_number)); | |
2660 | ||
2661 | // FIXME: Should there be a callback for this command? | |
2662 | return SUCCESS; | |
2663 | } | |
2664 | ||
2665 | // We cannot actually abort a command owned by firmware, return | |
2666 | // failure and wait for reset. In host reset handler, we will find out | |
2667 | // if the HBA is still live | |
2668 | return FAILED; | |
2669 | } | |
2670 | ||
1da177e4 LT |
2671 | /** |
2672 | * megaraid_reset_handler - device reset hadler for mailbox based driver | |
2673 | * @scp : reference command | |
2674 | * | |
2675 | * Reset handler for the mailbox based controller. First try to find out if | |
2676 | * the FW is still live, in which case the outstanding commands counter mut go | |
2677 | * down to 0. If that happens, also issue the reservation reset command to | |
2678 | * relinquish (possible) reservations on the logical drives connected to this | |
a69b74d3 | 2679 | * host. |
1da177e4 LT |
2680 | **/ |
2681 | static int | |
f2c8dc40 | 2682 | megaraid_reset_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2683 | { |
2684 | adapter_t *adapter; | |
2685 | scb_t *scb; | |
2686 | scb_t *tmp; | |
2687 | mraid_device_t *raid_dev; | |
2688 | unsigned long flags; | |
2689 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2690 | int rval; | |
2691 | int recovery_window; | |
2692 | int recovering; | |
2693 | int i; | |
c005fb4f | 2694 | uioc_t *kioc; |
1da177e4 LT |
2695 | |
2696 | adapter = SCP2ADAPTER(scp); | |
2697 | raid_dev = ADAP2RAIDDEV(adapter); | |
2698 | ||
1da177e4 LT |
2699 | // return failure if adapter is not responding |
2700 | if (raid_dev->hw_error) { | |
2701 | con_log(CL_ANN, (KERN_NOTICE | |
2702 | "megaraid: hw error, cannot reset\n")); | |
2703 | return FAILED; | |
2704 | } | |
2705 | ||
2706 | ||
2707 | // Under exceptional conditions, FW can take up to 3 minutes to | |
2708 | // complete command processing. Wait for additional 2 minutes for the | |
2709 | // pending commands counter to go down to 0. If it doesn't, let the | |
2710 | // controller be marked offline | |
2711 | // Also, reset all the commands currently owned by the driver | |
2712 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2713 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
1da177e4 LT |
2714 | list_del_init(&scb->list); // from pending list |
2715 | ||
c005fb4f JS |
2716 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
2717 | con_log(CL_ANN, (KERN_WARNING | |
2718 | "megaraid: IOCTL packet with %d[%d:%d] being reset\n", | |
2719 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 | 2720 | |
c005fb4f | 2721 | scb->status = -1; |
1da177e4 | 2722 | |
c005fb4f JS |
2723 | kioc = (uioc_t *)scb->gp; |
2724 | kioc->status = -EFAULT; | |
2725 | ||
2726 | megaraid_mbox_mm_done(adapter, scb); | |
2727 | } else { | |
2728 | if (scb->scp == scp) { // Found command | |
2729 | con_log(CL_ANN, (KERN_WARNING | |
2730 | "megaraid: %ld:%d[%d:%d], reset from pending list\n", | |
2731 | scp->serial_number, scb->sno, | |
2732 | scb->dev_channel, scb->dev_target)); | |
2733 | } else { | |
2734 | con_log(CL_ANN, (KERN_WARNING | |
2735 | "megaraid: IO packet with %d[%d:%d] being reset\n", | |
2736 | scb->sno, scb->dev_channel, scb->dev_target)); | |
2737 | } | |
2738 | ||
2739 | scb->scp->result = (DID_RESET << 16); | |
2740 | scb->scp->scsi_done(scb->scp); | |
2741 | ||
2742 | megaraid_dealloc_scb(adapter, scb); | |
2743 | } | |
1da177e4 LT |
2744 | } |
2745 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2746 | ||
2747 | if (adapter->outstanding_cmds) { | |
2748 | con_log(CL_ANN, (KERN_NOTICE | |
2749 | "megaraid: %d outstanding commands. Max wait %d sec\n", | |
c005fb4f JS |
2750 | adapter->outstanding_cmds, |
2751 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT))); | |
1da177e4 LT |
2752 | } |
2753 | ||
1da177e4 LT |
2754 | recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
2755 | ||
2756 | recovering = adapter->outstanding_cmds; | |
2757 | ||
c005fb4f | 2758 | for (i = 0; i < recovery_window; i++) { |
1da177e4 LT |
2759 | |
2760 | megaraid_ack_sequence(adapter); | |
2761 | ||
2762 | // print a message once every 5 seconds only | |
2763 | if (!(i % 5)) { | |
2764 | con_log(CL_ANN, ( | |
2765 | "megaraid mbox: Wait for %d commands to complete:%d\n", | |
2766 | adapter->outstanding_cmds, | |
c005fb4f | 2767 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); |
1da177e4 LT |
2768 | } |
2769 | ||
2770 | // bailout if no recovery happended in reset time | |
c005fb4f | 2771 | if (adapter->outstanding_cmds == 0) { |
1da177e4 LT |
2772 | break; |
2773 | } | |
2774 | ||
2775 | msleep(1000); | |
2776 | } | |
2777 | ||
f2c8dc40 | 2778 | spin_lock(&adapter->lock); |
1da177e4 LT |
2779 | |
2780 | // If still outstanding commands, bail out | |
2781 | if (adapter->outstanding_cmds) { | |
2782 | con_log(CL_ANN, (KERN_WARNING | |
2783 | "megaraid mbox: critical hardware error!\n")); | |
2784 | ||
2785 | raid_dev->hw_error = 1; | |
2786 | ||
f2c8dc40 CH |
2787 | rval = FAILED; |
2788 | goto out; | |
1da177e4 LT |
2789 | } |
2790 | else { | |
2791 | con_log(CL_ANN, (KERN_NOTICE | |
2792 | "megaraid mbox: reset sequence completed sucessfully\n")); | |
2793 | } | |
2794 | ||
2795 | ||
2796 | // If the controller supports clustering, reset reservations | |
f2c8dc40 CH |
2797 | if (!adapter->ha) { |
2798 | rval = SUCCESS; | |
2799 | goto out; | |
2800 | } | |
1da177e4 LT |
2801 | |
2802 | // clear reservations if any | |
2803 | raw_mbox[0] = CLUSTER_CMD; | |
2804 | raw_mbox[2] = RESET_RESERVATIONS; | |
2805 | ||
2806 | rval = SUCCESS; | |
2807 | if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { | |
2808 | con_log(CL_ANN, | |
2809 | (KERN_INFO "megaraid: reservation reset\n")); | |
2810 | } | |
2811 | else { | |
2812 | rval = FAILED; | |
2813 | con_log(CL_ANN, (KERN_WARNING | |
2814 | "megaraid: reservation reset failed\n")); | |
2815 | } | |
2816 | ||
f2c8dc40 CH |
2817 | out: |
2818 | spin_unlock_irq(&adapter->lock); | |
1da177e4 LT |
2819 | return rval; |
2820 | } | |
2821 | ||
1da177e4 LT |
2822 | /* |
2823 | * START: internal commands library | |
2824 | * | |
2825 | * This section of the driver has the common routine used by the driver and | |
2826 | * also has all the FW routines | |
2827 | */ | |
2828 | ||
2829 | /** | |
2830 | * mbox_post_sync_cmd() - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2831 | * @adapter : controller's soft state |
2832 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2833 | * |
2834 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
a69b74d3 | 2835 | * controllers. |
1da177e4 LT |
2836 | */ |
2837 | static int | |
2838 | mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) | |
2839 | { | |
2840 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2841 | mbox64_t *mbox64; | |
2842 | mbox_t *mbox; | |
2843 | uint8_t status; | |
2844 | int i; | |
2845 | ||
2846 | ||
2847 | mbox64 = raid_dev->mbox64; | |
2848 | mbox = raid_dev->mbox; | |
2849 | ||
2850 | /* | |
2851 | * Wait until mailbox is free | |
2852 | */ | |
2853 | if (megaraid_busywait_mbox(raid_dev) != 0) | |
2854 | goto blocked_mailbox; | |
2855 | ||
2856 | /* | |
2857 | * Copy mailbox data into host structure | |
2858 | */ | |
2859 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
2860 | mbox->cmdid = 0xFE; | |
2861 | mbox->busy = 1; | |
2862 | mbox->poll = 0; | |
2863 | mbox->ack = 0; | |
2864 | mbox->numstatus = 0xFF; | |
2865 | mbox->status = 0xFF; | |
2866 | ||
2867 | wmb(); | |
2868 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2869 | ||
2870 | // wait for maximum 1 second for status to post. If the status is not | |
2871 | // available within 1 second, assume FW is initializing and wait | |
2872 | // for an extended amount of time | |
2873 | if (mbox->numstatus == 0xFF) { // status not yet available | |
53b3531b | 2874 | udelay(25); |
1da177e4 LT |
2875 | |
2876 | for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { | |
2877 | rmb(); | |
2878 | msleep(1); | |
2879 | } | |
2880 | ||
2881 | ||
2882 | if (i == 1000) { | |
2883 | con_log(CL_ANN, (KERN_NOTICE | |
2884 | "megaraid mailbox: wait for FW to boot ")); | |
2885 | ||
2886 | for (i = 0; (mbox->numstatus == 0xFF) && | |
2887 | (i < MBOX_RESET_WAIT); i++) { | |
2888 | rmb(); | |
2889 | con_log(CL_ANN, ("\b\b\b\b\b[%03d]", | |
2890 | MBOX_RESET_WAIT - i)); | |
2891 | msleep(1000); | |
2892 | } | |
2893 | ||
2894 | if (i == MBOX_RESET_WAIT) { | |
2895 | ||
2896 | con_log(CL_ANN, ( | |
2897 | "\nmegaraid mailbox: status not available\n")); | |
2898 | ||
2899 | return -1; | |
2900 | } | |
2901 | con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); | |
2902 | } | |
2903 | } | |
2904 | ||
2905 | // wait for maximum 1 second for poll semaphore | |
2906 | if (mbox->poll != 0x77) { | |
2907 | udelay(25); | |
2908 | ||
2909 | for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { | |
2910 | rmb(); | |
2911 | msleep(1); | |
2912 | } | |
2913 | ||
2914 | if (i == 1000) { | |
2915 | con_log(CL_ANN, (KERN_WARNING | |
2916 | "megaraid mailbox: could not get poll semaphore\n")); | |
2917 | return -1; | |
2918 | } | |
2919 | } | |
2920 | ||
2921 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2922 | wmb(); | |
2923 | ||
2924 | // wait for maximum 1 second for acknowledgement | |
2925 | if (RDINDOOR(raid_dev) & 0x2) { | |
2926 | udelay(25); | |
2927 | ||
2928 | for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { | |
2929 | rmb(); | |
2930 | msleep(1); | |
2931 | } | |
2932 | ||
2933 | if (i == 1000) { | |
2934 | con_log(CL_ANN, (KERN_WARNING | |
2935 | "megaraid mailbox: could not acknowledge\n")); | |
2936 | return -1; | |
2937 | } | |
2938 | } | |
2939 | mbox->poll = 0; | |
2940 | mbox->ack = 0x77; | |
2941 | ||
2942 | status = mbox->status; | |
2943 | ||
2944 | // invalidate the completed command id array. After command | |
2945 | // completion, firmware would write the valid id. | |
2946 | mbox->numstatus = 0xFF; | |
2947 | mbox->status = 0xFF; | |
2948 | for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { | |
2949 | mbox->completed[i] = 0xFF; | |
2950 | } | |
2951 | ||
2952 | return status; | |
2953 | ||
2954 | blocked_mailbox: | |
2955 | ||
2956 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); | |
2957 | return -1; | |
2958 | } | |
2959 | ||
2960 | ||
2961 | /** | |
2962 | * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2963 | * @adapter : controller's soft state |
2964 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2965 | * |
2966 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
2967 | * controllers. This is a faster version of the synchronous command and | |
a69b74d3 | 2968 | * therefore can be called in interrupt-context as well. |
1da177e4 LT |
2969 | */ |
2970 | static int | |
2971 | mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) | |
2972 | { | |
2973 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2974 | mbox_t *mbox; | |
2975 | long i; | |
2976 | ||
2977 | ||
2978 | mbox = raid_dev->mbox; | |
2979 | ||
2980 | // return immediately if the mailbox is busy | |
2981 | if (mbox->busy) return -1; | |
2982 | ||
2983 | // Copy mailbox data into host structure | |
2984 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); | |
2985 | mbox->cmdid = 0xFE; | |
2986 | mbox->busy = 1; | |
2987 | mbox->poll = 0; | |
2988 | mbox->ack = 0; | |
2989 | mbox->numstatus = 0xFF; | |
2990 | mbox->status = 0xFF; | |
2991 | ||
2992 | wmb(); | |
2993 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2994 | ||
c005fb4f | 2995 | for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) { |
1da177e4 | 2996 | if (mbox->numstatus != 0xFF) break; |
ed7e8ef7 | 2997 | rmb(); |
c005fb4f | 2998 | udelay(MBOX_SYNC_DELAY_200); |
1da177e4 LT |
2999 | } |
3000 | ||
c005fb4f | 3001 | if (i == MBOX_SYNC_WAIT_CNT) { |
1da177e4 LT |
3002 | // We may need to re-calibrate the counter |
3003 | con_log(CL_ANN, (KERN_CRIT | |
3004 | "megaraid: fast sync command timed out\n")); | |
3005 | } | |
3006 | ||
3007 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
3008 | wmb(); | |
3009 | ||
3010 | return mbox->status; | |
3011 | } | |
3012 | ||
3013 | ||
3014 | /** | |
3015 | * megaraid_busywait_mbox() - Wait until the controller's mailbox is available | |
a69b74d3 | 3016 | * @raid_dev : RAID device (HBA) soft state |
1da177e4 | 3017 | * |
a69b74d3 RD |
3018 | * Wait until the controller's mailbox is available to accept more commands. |
3019 | * Wait for at most 1 second. | |
1da177e4 LT |
3020 | */ |
3021 | static int | |
3022 | megaraid_busywait_mbox(mraid_device_t *raid_dev) | |
3023 | { | |
3024 | mbox_t *mbox = raid_dev->mbox; | |
3025 | int i = 0; | |
3026 | ||
3027 | if (mbox->busy) { | |
3028 | udelay(25); | |
3029 | for (i = 0; mbox->busy && i < 1000; i++) | |
3030 | msleep(1); | |
3031 | } | |
3032 | ||
3033 | if (i < 1000) return 0; | |
3034 | else return -1; | |
3035 | } | |
3036 | ||
3037 | ||
3038 | /** | |
3039 | * megaraid_mbox_product_info - some static information about the controller | |
a69b74d3 | 3040 | * @adapter : our soft state |
1da177e4 | 3041 | * |
a69b74d3 | 3042 | * Issue commands to the controller to grab some parameters required by our |
1da177e4 LT |
3043 | * caller. |
3044 | */ | |
3045 | static int | |
3046 | megaraid_mbox_product_info(adapter_t *adapter) | |
3047 | { | |
3048 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3049 | mbox_t *mbox; | |
3050 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3051 | mraid_pinfo_t *pinfo; | |
3052 | dma_addr_t pinfo_dma_h; | |
3053 | mraid_inquiry3_t *mraid_inq3; | |
3054 | int i; | |
3055 | ||
3056 | ||
3057 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3058 | mbox = (mbox_t *)raw_mbox; | |
3059 | ||
3060 | /* | |
3061 | * Issue an ENQUIRY3 command to find out certain adapter parameters, | |
3062 | * e.g., max channels, max commands etc. | |
3063 | */ | |
3064 | pinfo = pci_alloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3065 | &pinfo_dma_h); | |
3066 | ||
3067 | if (pinfo == NULL) { | |
3068 | con_log(CL_ANN, (KERN_WARNING | |
3069 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
3070 | __LINE__)); | |
3071 | ||
3072 | return -1; | |
3073 | } | |
3074 | memset(pinfo, 0, sizeof(mraid_pinfo_t)); | |
3075 | ||
3076 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3077 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3078 | ||
3079 | raw_mbox[0] = FC_NEW_CONFIG; | |
3080 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; | |
3081 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; | |
3082 | ||
3083 | // Issue the command | |
3084 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3085 | ||
3086 | con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); | |
3087 | ||
3088 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3089 | pinfo, pinfo_dma_h); | |
3090 | ||
3091 | return -1; | |
3092 | } | |
3093 | ||
3094 | /* | |
3095 | * Collect information about state of each physical drive | |
3096 | * attached to the controller. We will expose all the disks | |
3097 | * which are not part of RAID | |
3098 | */ | |
3099 | mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; | |
3100 | for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { | |
3101 | raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; | |
3102 | } | |
3103 | ||
3104 | /* | |
3105 | * Get product info for information like number of channels, | |
3106 | * maximum commands supported. | |
3107 | */ | |
3108 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3109 | mbox->xferaddr = (uint32_t)pinfo_dma_h; | |
3110 | ||
3111 | raw_mbox[0] = FC_NEW_CONFIG; | |
3112 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; | |
3113 | ||
3114 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3115 | ||
3116 | con_log(CL_ANN, (KERN_WARNING | |
3117 | "megaraid: product info failed\n")); | |
3118 | ||
3119 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3120 | pinfo, pinfo_dma_h); | |
3121 | ||
3122 | return -1; | |
3123 | } | |
3124 | ||
3125 | /* | |
3126 | * Setup some parameters for host, as required by our caller | |
3127 | */ | |
3128 | adapter->max_channel = pinfo->nchannels; | |
3129 | ||
3130 | /* | |
3131 | * we will export all the logical drives on a single channel. | |
3132 | * Add 1 since inquires do not come for inititor ID | |
3133 | */ | |
3134 | adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; | |
3135 | adapter->max_lun = 8; // up to 8 LUNs for non-disk devices | |
3136 | ||
3137 | /* | |
3138 | * These are the maximum outstanding commands for the scsi-layer | |
3139 | */ | |
3140 | adapter->max_cmds = MBOX_MAX_SCSI_CMDS; | |
3141 | ||
3142 | memset(adapter->fw_version, 0, VERSION_SIZE); | |
3143 | memset(adapter->bios_version, 0, VERSION_SIZE); | |
3144 | ||
3145 | memcpy(adapter->fw_version, pinfo->fw_version, 4); | |
3146 | adapter->fw_version[4] = 0; | |
3147 | ||
3148 | memcpy(adapter->bios_version, pinfo->bios_version, 4); | |
3149 | adapter->bios_version[4] = 0; | |
3150 | ||
3151 | con_log(CL_ANN, (KERN_NOTICE | |
3152 | "megaraid: fw version:[%s] bios version:[%s]\n", | |
3153 | adapter->fw_version, adapter->bios_version)); | |
3154 | ||
3155 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo, | |
3156 | pinfo_dma_h); | |
3157 | ||
3158 | return 0; | |
3159 | } | |
3160 | ||
3161 | ||
3162 | ||
3163 | /** | |
3164 | * megaraid_mbox_extended_cdb - check for support for extended CDBs | |
a69b74d3 | 3165 | * @adapter : soft state for the controller |
1da177e4 | 3166 | * |
a69b74d3 RD |
3167 | * This routine check whether the controller in question supports extended |
3168 | * ( > 10 bytes ) CDBs. | |
1da177e4 LT |
3169 | */ |
3170 | static int | |
3171 | megaraid_mbox_extended_cdb(adapter_t *adapter) | |
3172 | { | |
3173 | mbox_t *mbox; | |
3174 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3175 | int rval; | |
3176 | ||
3177 | mbox = (mbox_t *)raw_mbox; | |
3178 | ||
3179 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3180 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3181 | ||
3182 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3183 | ||
3184 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3185 | raw_mbox[2] = SUPPORT_EXT_CDB; | |
3186 | ||
3187 | /* | |
3188 | * Issue the command | |
3189 | */ | |
3190 | rval = 0; | |
3191 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3192 | rval = -1; | |
3193 | } | |
3194 | ||
3195 | return rval; | |
3196 | } | |
3197 | ||
3198 | ||
3199 | /** | |
3200 | * megaraid_mbox_support_ha - Do we support clustering | |
a69b74d3 RD |
3201 | * @adapter : soft state for the controller |
3202 | * @init_id : ID of the initiator | |
1da177e4 LT |
3203 | * |
3204 | * Determine if the firmware supports clustering and the ID of the initiator. | |
3205 | */ | |
3206 | static int | |
3207 | megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) | |
3208 | { | |
3209 | mbox_t *mbox; | |
3210 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3211 | int rval; | |
3212 | ||
3213 | ||
3214 | mbox = (mbox_t *)raw_mbox; | |
3215 | ||
3216 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3217 | ||
3218 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3219 | ||
3220 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3221 | ||
3222 | raw_mbox[0] = GET_TARGET_ID; | |
3223 | ||
3224 | // Issue the command | |
3225 | *init_id = 7; | |
3226 | rval = -1; | |
3227 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3228 | ||
3229 | *init_id = *(uint8_t *)adapter->ibuf; | |
3230 | ||
3231 | con_log(CL_ANN, (KERN_INFO | |
3232 | "megaraid: cluster firmware, initiator ID: %d\n", | |
3233 | *init_id)); | |
3234 | ||
3235 | rval = 0; | |
3236 | } | |
3237 | ||
3238 | return rval; | |
3239 | } | |
3240 | ||
3241 | ||
3242 | /** | |
3243 | * megaraid_mbox_support_random_del - Do we support random deletion | |
a69b74d3 | 3244 | * @adapter : soft state for the controller |
1da177e4 | 3245 | * |
a69b74d3 | 3246 | * Determine if the firmware supports random deletion. |
1da177e4 LT |
3247 | * Return: 1 is operation supported, 0 otherwise |
3248 | */ | |
3249 | static int | |
3250 | megaraid_mbox_support_random_del(adapter_t *adapter) | |
3251 | { | |
3252 | mbox_t *mbox; | |
3253 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3254 | int rval; | |
3255 | ||
3256 | ||
3257 | mbox = (mbox_t *)raw_mbox; | |
3258 | ||
3259 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3260 | ||
3261 | raw_mbox[0] = FC_DEL_LOGDRV; | |
3262 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; | |
3263 | ||
3264 | // Issue the command | |
3265 | rval = 0; | |
3266 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3267 | ||
3268 | con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); | |
3269 | ||
3270 | rval = 1; | |
3271 | } | |
3272 | ||
3273 | return rval; | |
3274 | } | |
3275 | ||
3276 | ||
3277 | /** | |
3278 | * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware | |
a69b74d3 | 3279 | * @adapter : soft state for the controller |
1da177e4 LT |
3280 | * |
3281 | * Find out the maximum number of scatter-gather elements supported by the | |
a69b74d3 | 3282 | * firmware. |
1da177e4 LT |
3283 | */ |
3284 | static int | |
3285 | megaraid_mbox_get_max_sg(adapter_t *adapter) | |
3286 | { | |
3287 | mbox_t *mbox; | |
3288 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3289 | int nsg; | |
3290 | ||
3291 | ||
3292 | mbox = (mbox_t *)raw_mbox; | |
3293 | ||
3294 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3295 | ||
3296 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3297 | ||
3298 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3299 | ||
3300 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3301 | raw_mbox[2] = GET_MAX_SG_SUPPORT; | |
3302 | ||
3303 | // Issue the command | |
3304 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3305 | nsg = *(uint8_t *)adapter->ibuf; | |
3306 | } | |
3307 | else { | |
3308 | nsg = MBOX_DEFAULT_SG_SIZE; | |
3309 | } | |
3310 | ||
3311 | if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; | |
3312 | ||
3313 | return nsg; | |
3314 | } | |
3315 | ||
3316 | ||
3317 | /** | |
3318 | * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels | |
a69b74d3 | 3319 | * @adapter : soft state for the controller |
1da177e4 | 3320 | * |
a69b74d3 RD |
3321 | * Enumerate the RAID and SCSI channels for ROMB platforms so that channels |
3322 | * can be exported as regular SCSI channels. | |
1da177e4 LT |
3323 | */ |
3324 | static void | |
3325 | megaraid_mbox_enum_raid_scsi(adapter_t *adapter) | |
3326 | { | |
3327 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3328 | mbox_t *mbox; | |
3329 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3330 | ||
3331 | ||
3332 | mbox = (mbox_t *)raw_mbox; | |
3333 | ||
3334 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3335 | ||
3336 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3337 | ||
3338 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3339 | ||
3340 | raw_mbox[0] = CHNL_CLASS; | |
3341 | raw_mbox[2] = GET_CHNL_CLASS; | |
3342 | ||
3343 | // Issue the command. If the command fails, all channels are RAID | |
3344 | // channels | |
3345 | raid_dev->channel_class = 0xFF; | |
3346 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3347 | raid_dev->channel_class = *(uint8_t *)adapter->ibuf; | |
3348 | } | |
3349 | ||
3350 | return; | |
3351 | } | |
3352 | ||
3353 | ||
3354 | /** | |
3355 | * megaraid_mbox_flush_cache - flush adapter and disks cache | |
a69b74d3 | 3356 | * @adapter : soft state for the controller |
1da177e4 | 3357 | * |
a69b74d3 | 3358 | * Flush adapter cache followed by disks cache. |
1da177e4 LT |
3359 | */ |
3360 | static void | |
3361 | megaraid_mbox_flush_cache(adapter_t *adapter) | |
3362 | { | |
3363 | mbox_t *mbox; | |
3364 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3365 | ||
3366 | ||
3367 | mbox = (mbox_t *)raw_mbox; | |
3368 | ||
3369 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3370 | ||
3371 | raw_mbox[0] = FLUSH_ADAPTER; | |
3372 | ||
3373 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3374 | con_log(CL_ANN, ("megaraid: flush adapter failed\n")); | |
3375 | } | |
3376 | ||
3377 | raw_mbox[0] = FLUSH_SYSTEM; | |
3378 | ||
3379 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3380 | con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); | |
3381 | } | |
3382 | ||
3383 | return; | |
3384 | } | |
3385 | ||
3386 | ||
cd96d96f SP |
3387 | /** |
3388 | * megaraid_mbox_fire_sync_cmd - fire the sync cmd | |
a69b74d3 | 3389 | * @adapter : soft state for the controller |
cd96d96f | 3390 | * |
a69b74d3 | 3391 | * Clears the pending cmds in FW and reinits its RAID structs. |
cd96d96f SP |
3392 | */ |
3393 | static int | |
3394 | megaraid_mbox_fire_sync_cmd(adapter_t *adapter) | |
3395 | { | |
3396 | mbox_t *mbox; | |
3397 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3398 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3399 | mbox64_t *mbox64; | |
3400 | int status = 0; | |
3401 | int i; | |
3402 | uint32_t dword; | |
3403 | ||
3404 | mbox = (mbox_t *)raw_mbox; | |
3405 | ||
3406 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3407 | ||
3408 | raw_mbox[0] = 0xFF; | |
3409 | ||
3410 | mbox64 = raid_dev->mbox64; | |
3411 | mbox = raid_dev->mbox; | |
3412 | ||
3413 | /* Wait until mailbox is free */ | |
3414 | if (megaraid_busywait_mbox(raid_dev) != 0) { | |
3415 | status = 1; | |
3416 | goto blocked_mailbox; | |
3417 | } | |
3418 | ||
3419 | /* Copy mailbox data into host structure */ | |
3420 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
3421 | mbox->cmdid = 0xFE; | |
3422 | mbox->busy = 1; | |
3423 | mbox->poll = 0; | |
3424 | mbox->ack = 0; | |
3425 | mbox->numstatus = 0; | |
3426 | mbox->status = 0; | |
3427 | ||
3428 | wmb(); | |
3429 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
3430 | ||
3431 | /* Wait for maximum 1 min for status to post. | |
3432 | * If the Firmware SUPPORTS the ABOVE COMMAND, | |
3433 | * mbox->cmd will be set to 0 | |
3434 | * else | |
3435 | * the firmware will reject the command with | |
3436 | * mbox->numstatus set to 1 | |
3437 | */ | |
3438 | ||
3439 | i = 0; | |
3440 | status = 0; | |
3441 | while (!mbox->numstatus && mbox->cmd == 0xFF) { | |
3442 | rmb(); | |
3443 | msleep(1); | |
3444 | i++; | |
3445 | if (i > 1000 * 60) { | |
3446 | status = 1; | |
3447 | break; | |
3448 | } | |
3449 | } | |
3450 | if (mbox->numstatus == 1) | |
3451 | status = 1; /*cmd not supported*/ | |
3452 | ||
3453 | /* Check for interrupt line */ | |
3454 | dword = RDOUTDOOR(raid_dev); | |
3455 | WROUTDOOR(raid_dev, dword); | |
3456 | WRINDOOR(raid_dev,2); | |
3457 | ||
3458 | return status; | |
3459 | ||
3460 | blocked_mailbox: | |
3461 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n")); | |
3462 | return status; | |
3463 | } | |
3464 | ||
1da177e4 LT |
3465 | /** |
3466 | * megaraid_mbox_display_scb - display SCB information, mostly debug purposes | |
a69b74d3 RD |
3467 | * @adapter : controller's soft state |
3468 | * @scb : SCB to be displayed | |
3469 | * @level : debug level for console print | |
1da177e4 LT |
3470 | * |
3471 | * Diplay information about the given SCB iff the current debug level is | |
a69b74d3 | 3472 | * verbose. |
1da177e4 LT |
3473 | */ |
3474 | static void | |
3475 | megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) | |
3476 | { | |
3477 | mbox_ccb_t *ccb; | |
3478 | struct scsi_cmnd *scp; | |
3479 | mbox_t *mbox; | |
3480 | int level; | |
3481 | int i; | |
3482 | ||
3483 | ||
3484 | ccb = (mbox_ccb_t *)scb->ccb; | |
3485 | scp = scb->scp; | |
3486 | mbox = ccb->mbox; | |
3487 | ||
3488 | level = CL_DLEVEL3; | |
3489 | ||
3490 | con_log(level, (KERN_NOTICE | |
3491 | "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, | |
3492 | mbox->cmd, scb->sno)); | |
3493 | ||
3494 | con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", | |
3495 | mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, | |
3496 | mbox->numsge)); | |
3497 | ||
3498 | if (!scp) return; | |
3499 | ||
3500 | con_log(level, (KERN_NOTICE "scsi cmnd: ")); | |
3501 | ||
3502 | for (i = 0; i < scp->cmd_len; i++) { | |
3503 | con_log(level, ("%#2.02x ", scp->cmnd[i])); | |
3504 | } | |
3505 | ||
3506 | con_log(level, ("\n")); | |
3507 | ||
3508 | return; | |
3509 | } | |
3510 | ||
3511 | ||
3512 | /** | |
3513 | * megaraid_mbox_setup_device_map - manage device ids | |
3514 | * @adapter : Driver's soft state | |
3515 | * | |
3516 | * Manange the device ids to have an appropraite mapping between the kernel | |
3517 | * scsi addresses and megaraid scsi and logical drive addresses. We export | |
3518 | * scsi devices on their actual addresses, whereas the logical drives are | |
3519 | * exported on a virtual scsi channel. | |
a69b74d3 | 3520 | */ |
1da177e4 LT |
3521 | static void |
3522 | megaraid_mbox_setup_device_map(adapter_t *adapter) | |
3523 | { | |
3524 | uint8_t c; | |
3525 | uint8_t t; | |
3526 | ||
3527 | /* | |
3528 | * First fill the values on the logical drive channel | |
3529 | */ | |
3530 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3531 | adapter->device_ids[adapter->max_channel][t] = | |
3532 | (t < adapter->init_id) ? t : t - 1; | |
3533 | ||
3534 | adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; | |
3535 | ||
3536 | /* | |
3537 | * Fill the values on the physical devices channels | |
3538 | */ | |
3539 | for (c = 0; c < adapter->max_channel; c++) | |
3540 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3541 | adapter->device_ids[c][t] = (c << 8) | t; | |
3542 | } | |
3543 | ||
3544 | ||
3545 | /* | |
3546 | * END: internal commands library | |
3547 | */ | |
3548 | ||
3549 | /* | |
3550 | * START: Interface for the common management module | |
3551 | * | |
3552 | * This is the module, which interfaces with the common mangement module to | |
3553 | * provide support for ioctl and sysfs | |
3554 | */ | |
3555 | ||
3556 | /** | |
3557 | * megaraid_cmm_register - register with the mangement module | |
a69b74d3 | 3558 | * @adapter : HBA soft state |
1da177e4 LT |
3559 | * |
3560 | * Register with the management module, which allows applications to issue | |
3561 | * ioctl calls to the drivers. This interface is used by the management module | |
3562 | * to setup sysfs support as well. | |
3563 | */ | |
3564 | static int | |
3565 | megaraid_cmm_register(adapter_t *adapter) | |
3566 | { | |
3567 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3568 | mraid_mmadp_t adp; | |
3569 | scb_t *scb; | |
3570 | mbox_ccb_t *ccb; | |
3571 | int rval; | |
3572 | int i; | |
3573 | ||
3574 | // Allocate memory for the base list of scb for management module. | |
3575 | adapter->uscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_USER_CMDS, | |
3576 | GFP_KERNEL); | |
3577 | ||
3578 | if (adapter->uscb_list == NULL) { | |
3579 | con_log(CL_ANN, (KERN_WARNING | |
3580 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
3581 | __LINE__)); | |
3582 | return -1; | |
3583 | } | |
3584 | memset(adapter->uscb_list, 0, sizeof(scb_t) * MBOX_MAX_USER_CMDS); | |
3585 | ||
3586 | ||
3587 | // Initialize the synchronization parameters for resources for | |
3588 | // commands for management module | |
3589 | INIT_LIST_HEAD(&adapter->uscb_pool); | |
3590 | ||
3591 | spin_lock_init(USER_FREE_LIST_LOCK(adapter)); | |
3592 | ||
3593 | ||
3594 | ||
3595 | // link all the packets. Note, CCB for commands, coming from the | |
3596 | // commom management module, mailbox physical address are already | |
3597 | // setup by it. We just need placeholder for that in our local command | |
3598 | // control blocks | |
3599 | for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { | |
3600 | ||
3601 | scb = adapter->uscb_list + i; | |
3602 | ccb = raid_dev->uccb_list + i; | |
3603 | ||
3604 | scb->ccb = (caddr_t)ccb; | |
3605 | ccb->mbox64 = raid_dev->umbox64 + i; | |
3606 | ccb->mbox = &ccb->mbox64->mbox32; | |
3607 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
3608 | ||
3609 | scb->gp = 0; | |
3610 | ||
3611 | // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR | |
3612 | // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) | |
3613 | scb->sno = i + MBOX_MAX_SCSI_CMDS; | |
3614 | ||
3615 | scb->scp = NULL; | |
3616 | scb->state = SCB_FREE; | |
3617 | scb->dma_direction = PCI_DMA_NONE; | |
3618 | scb->dma_type = MRAID_DMA_NONE; | |
3619 | scb->dev_channel = -1; | |
3620 | scb->dev_target = -1; | |
3621 | ||
3622 | // put scb in the free pool | |
3623 | list_add_tail(&scb->list, &adapter->uscb_pool); | |
3624 | } | |
3625 | ||
3626 | adp.unique_id = adapter->unique_id; | |
3627 | adp.drvr_type = DRVRTYPE_MBOX; | |
3628 | adp.drvr_data = (unsigned long)adapter; | |
3629 | adp.pdev = adapter->pdev; | |
3630 | adp.issue_uioc = megaraid_mbox_mm_handler; | |
c005fb4f | 3631 | adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
1da177e4 LT |
3632 | adp.max_kioc = MBOX_MAX_USER_CMDS; |
3633 | ||
3634 | if ((rval = mraid_mm_register_adp(&adp)) != 0) { | |
3635 | ||
3636 | con_log(CL_ANN, (KERN_WARNING | |
3637 | "megaraid mbox: did not register with CMM\n")); | |
3638 | ||
3639 | kfree(adapter->uscb_list); | |
3640 | } | |
3641 | ||
3642 | return rval; | |
3643 | } | |
3644 | ||
3645 | ||
3646 | /** | |
3647 | * megaraid_cmm_unregister - un-register with the mangement module | |
a69b74d3 | 3648 | * @adapter : HBA soft state |
1da177e4 LT |
3649 | * |
3650 | * Un-register with the management module. | |
3651 | * FIXME: mgmt module must return failure for unregister if it has pending | |
a69b74d3 | 3652 | * commands in LLD. |
1da177e4 LT |
3653 | */ |
3654 | static int | |
3655 | megaraid_cmm_unregister(adapter_t *adapter) | |
3656 | { | |
3657 | kfree(adapter->uscb_list); | |
3658 | mraid_mm_unregister_adp(adapter->unique_id); | |
3659 | return 0; | |
3660 | } | |
3661 | ||
3662 | ||
3663 | /** | |
3664 | * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD | |
a69b74d3 RD |
3665 | * @drvr_data : LLD specific data |
3666 | * @kioc : CMM interface packet | |
3667 | * @action : command action | |
1da177e4 LT |
3668 | * |
3669 | * This routine is invoked whenever the Common Mangement Module (CMM) has a | |
3670 | * command for us. The 'action' parameter specifies if this is a new command | |
3671 | * or otherwise. | |
3672 | */ | |
3673 | static int | |
3674 | megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) | |
3675 | { | |
3676 | adapter_t *adapter; | |
3677 | ||
3678 | if (action != IOCTL_ISSUE) { | |
3679 | con_log(CL_ANN, (KERN_WARNING | |
3680 | "megaraid: unsupported management action:%#2x\n", | |
3681 | action)); | |
3682 | return (-ENOTSUPP); | |
3683 | } | |
3684 | ||
3685 | adapter = (adapter_t *)drvr_data; | |
3686 | ||
3687 | // make sure this adapter is not being detached right now. | |
3688 | if (atomic_read(&adapter->being_detached)) { | |
3689 | con_log(CL_ANN, (KERN_WARNING | |
3690 | "megaraid: reject management request, detaching\n")); | |
3691 | return (-ENODEV); | |
3692 | } | |
3693 | ||
3694 | switch (kioc->opcode) { | |
3695 | ||
3696 | case GET_ADAP_INFO: | |
3697 | ||
3698 | kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) | |
3699 | (unsigned long)kioc->buf_vaddr); | |
3700 | ||
3701 | kioc->done(kioc); | |
3702 | ||
3703 | return kioc->status; | |
3704 | ||
3705 | case MBOX_CMD: | |
3706 | ||
3707 | return megaraid_mbox_mm_command(adapter, kioc); | |
3708 | ||
3709 | default: | |
3710 | kioc->status = (-EINVAL); | |
3711 | kioc->done(kioc); | |
3712 | return (-EINVAL); | |
3713 | } | |
3714 | ||
3715 | return 0; // not reached | |
3716 | } | |
3717 | ||
3718 | /** | |
3719 | * megaraid_mbox_mm_command - issues commands routed through CMM | |
a69b74d3 RD |
3720 | * @adapter : HBA soft state |
3721 | * @kioc : management command packet | |
1da177e4 LT |
3722 | * |
3723 | * Issues commands, which are routed through the management module. | |
3724 | */ | |
3725 | static int | |
3726 | megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) | |
3727 | { | |
3728 | struct list_head *head = &adapter->uscb_pool; | |
3729 | mbox64_t *mbox64; | |
3730 | uint8_t *raw_mbox; | |
3731 | scb_t *scb; | |
3732 | mbox_ccb_t *ccb; | |
3733 | unsigned long flags; | |
3734 | ||
3735 | // detach one scb from free pool | |
3736 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3737 | ||
3738 | if (list_empty(head)) { // should never happen because of CMM | |
3739 | ||
3740 | con_log(CL_ANN, (KERN_WARNING | |
3741 | "megaraid mbox: bug in cmm handler, lost resources\n")); | |
3742 | ||
3743 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3744 | ||
3745 | return (-EINVAL); | |
3746 | } | |
3747 | ||
3748 | scb = list_entry(head->next, scb_t, list); | |
3749 | list_del_init(&scb->list); | |
3750 | ||
3751 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3752 | ||
3753 | scb->state = SCB_ACTIVE; | |
3754 | scb->dma_type = MRAID_DMA_NONE; | |
3755 | scb->dma_direction = PCI_DMA_NONE; | |
3756 | ||
3757 | ccb = (mbox_ccb_t *)scb->ccb; | |
3758 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
3759 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3760 | ||
3761 | memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); | |
3762 | ||
3763 | scb->gp = (unsigned long)kioc; | |
3764 | ||
3765 | /* | |
3766 | * If it is a logdrv random delete operation, we have to wait till | |
3767 | * there are no outstanding cmds at the fw and then issue it directly | |
3768 | */ | |
3769 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3770 | ||
3771 | if (wait_till_fw_empty(adapter)) { | |
3772 | con_log(CL_ANN, (KERN_NOTICE | |
3773 | "megaraid mbox: LD delete, timed out\n")); | |
3774 | ||
3775 | kioc->status = -ETIME; | |
3776 | ||
3777 | scb->status = -1; | |
3778 | ||
3779 | megaraid_mbox_mm_done(adapter, scb); | |
3780 | ||
3781 | return (-ETIME); | |
3782 | } | |
3783 | ||
3784 | INIT_LIST_HEAD(&scb->list); | |
3785 | ||
3786 | scb->state = SCB_ISSUED; | |
3787 | if (mbox_post_cmd(adapter, scb) != 0) { | |
3788 | ||
3789 | con_log(CL_ANN, (KERN_NOTICE | |
3790 | "megaraid mbox: LD delete, mailbox busy\n")); | |
3791 | ||
3792 | kioc->status = -EBUSY; | |
3793 | ||
3794 | scb->status = -1; | |
3795 | ||
3796 | megaraid_mbox_mm_done(adapter, scb); | |
3797 | ||
3798 | return (-EBUSY); | |
3799 | } | |
3800 | ||
3801 | return 0; | |
3802 | } | |
3803 | ||
3804 | // put the command on the pending list and execute | |
3805 | megaraid_mbox_runpendq(adapter, scb); | |
3806 | ||
3807 | return 0; | |
3808 | } | |
3809 | ||
3810 | ||
3811 | static int | |
3812 | wait_till_fw_empty(adapter_t *adapter) | |
3813 | { | |
3814 | unsigned long flags = 0; | |
3815 | int i; | |
3816 | ||
3817 | ||
3818 | /* | |
3819 | * Set the quiescent flag to stop issuing cmds to FW. | |
3820 | */ | |
f2c8dc40 | 3821 | spin_lock_irqsave(&adapter->lock, flags); |
1da177e4 | 3822 | adapter->quiescent++; |
f2c8dc40 | 3823 | spin_unlock_irqrestore(&adapter->lock, flags); |
1da177e4 LT |
3824 | |
3825 | /* | |
3826 | * Wait till there are no more cmds outstanding at FW. Try for at most | |
3827 | * 60 seconds | |
3828 | */ | |
3829 | for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { | |
3830 | con_log(CL_DLEVEL1, (KERN_INFO | |
3831 | "megaraid: FW has %d pending commands\n", | |
3832 | adapter->outstanding_cmds)); | |
3833 | ||
3834 | msleep(1000); | |
3835 | } | |
3836 | ||
3837 | return adapter->outstanding_cmds; | |
3838 | } | |
3839 | ||
3840 | ||
3841 | /** | |
3842 | * megaraid_mbox_mm_done - callback for CMM commands | |
3843 | * @adapter : HBA soft state | |
3844 | * @scb : completed command | |
3845 | * | |
3846 | * Callback routine for internal commands originated from the management | |
3847 | * module. | |
3848 | */ | |
3849 | static void | |
3850 | megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) | |
3851 | { | |
3852 | uioc_t *kioc; | |
3853 | mbox64_t *mbox64; | |
3854 | uint8_t *raw_mbox; | |
3855 | unsigned long flags; | |
3856 | ||
3857 | kioc = (uioc_t *)scb->gp; | |
1da177e4 LT |
3858 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
3859 | mbox64->mbox32.status = scb->status; | |
3860 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3861 | ||
3862 | ||
3863 | // put scb in the free pool | |
3864 | scb->state = SCB_FREE; | |
3865 | scb->scp = NULL; | |
3866 | ||
3867 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3868 | ||
3869 | list_add(&scb->list, &adapter->uscb_pool); | |
3870 | ||
3871 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3872 | ||
3873 | // if a delete logical drive operation succeeded, restart the | |
3874 | // controller | |
3875 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3876 | ||
3877 | adapter->quiescent--; | |
3878 | ||
3879 | megaraid_mbox_runpendq(adapter, NULL); | |
3880 | } | |
3881 | ||
3882 | kioc->done(kioc); | |
3883 | ||
3884 | return; | |
3885 | } | |
3886 | ||
3887 | ||
3888 | /** | |
3889 | * gather_hbainfo - HBA characteristics for the applications | |
a69b74d3 RD |
3890 | * @adapter : HBA soft state |
3891 | * @hinfo : pointer to the caller's host info strucuture | |
1da177e4 LT |
3892 | */ |
3893 | static int | |
3894 | gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) | |
3895 | { | |
3896 | uint8_t dmajor; | |
3897 | ||
3898 | dmajor = megaraid_mbox_version[0]; | |
3899 | ||
3900 | hinfo->pci_vendor_id = adapter->pdev->vendor; | |
3901 | hinfo->pci_device_id = adapter->pdev->device; | |
3902 | hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; | |
3903 | hinfo->subsys_device_id = adapter->pdev->subsystem_device; | |
3904 | ||
3905 | hinfo->pci_bus = adapter->pdev->bus->number; | |
3906 | hinfo->pci_dev_fn = adapter->pdev->devfn; | |
3907 | hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); | |
3908 | hinfo->irq = adapter->host->irq; | |
3909 | hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; | |
3910 | ||
3911 | hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; | |
3912 | hinfo->host_no = adapter->host->host_no; | |
3913 | ||
3914 | return 0; | |
3915 | } | |
3916 | ||
3917 | /* | |
3918 | * END: Interface for the common management module | |
3919 | */ | |
3920 | ||
3921 | ||
3922 | ||
3923 | /** | |
3924 | * megaraid_sysfs_alloc_resources - allocate sysfs related resources | |
a69b74d3 | 3925 | * @adapter : controller's soft state |
1da177e4 LT |
3926 | * |
3927 | * Allocate packets required to issue FW calls whenever the sysfs attributes | |
3928 | * are read. These attributes would require up-to-date information from the | |
3929 | * FW. Also set up resources for mutual exclusion to share these resources and | |
3930 | * the wait queue. | |
3931 | * | |
a69b74d3 RD |
3932 | * Return 0 on success. |
3933 | * Return -ERROR_CODE on failure. | |
1da177e4 LT |
3934 | */ |
3935 | static int | |
3936 | megaraid_sysfs_alloc_resources(adapter_t *adapter) | |
3937 | { | |
3938 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3939 | int rval = 0; | |
3940 | ||
3941 | raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); | |
3942 | ||
3943 | raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); | |
3944 | ||
3945 | raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev, | |
3946 | PAGE_SIZE, &raid_dev->sysfs_buffer_dma); | |
3947 | ||
3948 | if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || | |
3949 | !raid_dev->sysfs_buffer) { | |
3950 | ||
3951 | con_log(CL_ANN, (KERN_WARNING | |
3952 | "megaraid: out of memory, %s %d\n", __FUNCTION__, | |
3953 | __LINE__)); | |
3954 | ||
3955 | rval = -ENOMEM; | |
3956 | ||
3957 | megaraid_sysfs_free_resources(adapter); | |
3958 | } | |
3959 | ||
3960 | sema_init(&raid_dev->sysfs_sem, 1); | |
3961 | ||
3962 | init_waitqueue_head(&raid_dev->sysfs_wait_q); | |
3963 | ||
3964 | return rval; | |
3965 | } | |
3966 | ||
3967 | ||
3968 | /** | |
3969 | * megaraid_sysfs_free_resources - free sysfs related resources | |
a69b74d3 | 3970 | * @adapter : controller's soft state |
1da177e4 LT |
3971 | * |
3972 | * Free packets allocated for sysfs FW commands | |
1da177e4 LT |
3973 | */ |
3974 | static void | |
3975 | megaraid_sysfs_free_resources(adapter_t *adapter) | |
3976 | { | |
3977 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3978 | ||
c9475cb0 JJ |
3979 | kfree(raid_dev->sysfs_uioc); |
3980 | kfree(raid_dev->sysfs_mbox64); | |
1da177e4 LT |
3981 | |
3982 | if (raid_dev->sysfs_buffer) { | |
3983 | pci_free_consistent(adapter->pdev, PAGE_SIZE, | |
3984 | raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); | |
3985 | } | |
3986 | } | |
3987 | ||
3988 | ||
3989 | /** | |
3990 | * megaraid_sysfs_get_ldmap_done - callback for get ldmap | |
a69b74d3 | 3991 | * @uioc : completed packet |
1da177e4 LT |
3992 | * |
3993 | * Callback routine called in the ISR/tasklet context for get ldmap call | |
1da177e4 LT |
3994 | */ |
3995 | static void | |
3996 | megaraid_sysfs_get_ldmap_done(uioc_t *uioc) | |
3997 | { | |
3998 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
3999 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4000 | ||
4001 | uioc->status = 0; | |
4002 | ||
4003 | wake_up(&raid_dev->sysfs_wait_q); | |
4004 | } | |
4005 | ||
4006 | ||
4007 | /** | |
4008 | * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap | |
a69b74d3 | 4009 | * @data : timed out packet |
1da177e4 LT |
4010 | * |
4011 | * Timeout routine to recover and return to application, in case the adapter | |
a69b74d3 RD |
4012 | * has stopped responding. A timeout of 60 seconds for this command seems like |
4013 | * a good value. | |
1da177e4 LT |
4014 | */ |
4015 | static void | |
4016 | megaraid_sysfs_get_ldmap_timeout(unsigned long data) | |
4017 | { | |
4018 | uioc_t *uioc = (uioc_t *)data; | |
4019 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
4020 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4021 | ||
4022 | uioc->status = -ETIME; | |
4023 | ||
4024 | wake_up(&raid_dev->sysfs_wait_q); | |
4025 | } | |
4026 | ||
4027 | ||
4028 | /** | |
4029 | * megaraid_sysfs_get_ldmap - get update logical drive map | |
a69b74d3 | 4030 | * @adapter : controller's soft state |
1da177e4 LT |
4031 | * |
4032 | * This routine will be called whenever user reads the logical drive | |
4033 | * attributes, go get the current logical drive mapping table from the | |
4034 | * firmware. We use the managment API's to issue commands to the controller. | |
4035 | * | |
4036 | * NOTE: The commands issuance functionality is not generalized and | |
4037 | * implemented in context of "get ld map" command only. If required, the | |
4038 | * command issuance logical can be trivially pulled out and implemented as a | |
4039 | * standalone libary. For now, this should suffice since there is no other | |
4040 | * user of this interface. | |
4041 | * | |
a69b74d3 RD |
4042 | * Return 0 on success. |
4043 | * Return -1 on failure. | |
1da177e4 LT |
4044 | */ |
4045 | static int | |
4046 | megaraid_sysfs_get_ldmap(adapter_t *adapter) | |
4047 | { | |
4048 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4049 | uioc_t *uioc; | |
4050 | mbox64_t *mbox64; | |
4051 | mbox_t *mbox; | |
4052 | char *raw_mbox; | |
4053 | struct timer_list sysfs_timer; | |
4054 | struct timer_list *timerp; | |
4055 | caddr_t ldmap; | |
4056 | int rval = 0; | |
4057 | ||
4058 | /* | |
4059 | * Allow only one read at a time to go through the sysfs attributes | |
4060 | */ | |
4061 | down(&raid_dev->sysfs_sem); | |
4062 | ||
4063 | uioc = raid_dev->sysfs_uioc; | |
4064 | mbox64 = raid_dev->sysfs_mbox64; | |
4065 | ldmap = raid_dev->sysfs_buffer; | |
4066 | ||
4067 | memset(uioc, 0, sizeof(uioc_t)); | |
4068 | memset(mbox64, 0, sizeof(mbox64_t)); | |
4069 | memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); | |
4070 | ||
4071 | mbox = &mbox64->mbox32; | |
4072 | raw_mbox = (char *)mbox; | |
4073 | uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; | |
4074 | uioc->buf_vaddr = (caddr_t)adapter; | |
4075 | uioc->status = -ENODATA; | |
4076 | uioc->done = megaraid_sysfs_get_ldmap_done; | |
4077 | ||
4078 | /* | |
4079 | * Prepare the mailbox packet to get the current logical drive mapping | |
4080 | * table | |
4081 | */ | |
4082 | mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; | |
4083 | ||
4084 | raw_mbox[0] = FC_DEL_LOGDRV; | |
4085 | raw_mbox[2] = OP_GET_LDID_MAP; | |
4086 | ||
4087 | /* | |
4088 | * Setup a timer to recover from a non-responding controller | |
4089 | */ | |
4090 | timerp = &sysfs_timer; | |
4091 | init_timer(timerp); | |
4092 | ||
4093 | timerp->function = megaraid_sysfs_get_ldmap_timeout; | |
4094 | timerp->data = (unsigned long)uioc; | |
4095 | timerp->expires = jiffies + 60 * HZ; | |
4096 | ||
4097 | add_timer(timerp); | |
4098 | ||
4099 | /* | |
4100 | * Send the command to the firmware | |
4101 | */ | |
4102 | rval = megaraid_mbox_mm_command(adapter, uioc); | |
4103 | ||
4104 | if (rval == 0) { // command successfully issued | |
4105 | wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); | |
4106 | ||
4107 | /* | |
4108 | * Check if the command timed out | |
4109 | */ | |
4110 | if (uioc->status == -ETIME) { | |
4111 | con_log(CL_ANN, (KERN_NOTICE | |
4112 | "megaraid: sysfs get ld map timed out\n")); | |
4113 | ||
4114 | rval = -ETIME; | |
4115 | } | |
4116 | else { | |
4117 | rval = mbox->status; | |
4118 | } | |
4119 | ||
4120 | if (rval == 0) { | |
4121 | memcpy(raid_dev->curr_ldmap, ldmap, | |
4122 | sizeof(raid_dev->curr_ldmap)); | |
4123 | } | |
4124 | else { | |
4125 | con_log(CL_ANN, (KERN_NOTICE | |
4126 | "megaraid: get ld map failed with %x\n", rval)); | |
4127 | } | |
4128 | } | |
4129 | else { | |
4130 | con_log(CL_ANN, (KERN_NOTICE | |
4131 | "megaraid: could not issue ldmap command:%x\n", rval)); | |
4132 | } | |
4133 | ||
4134 | ||
4135 | del_timer_sync(timerp); | |
4136 | ||
4137 | up(&raid_dev->sysfs_sem); | |
4138 | ||
4139 | return rval; | |
4140 | } | |
4141 | ||
4142 | ||
4143 | /** | |
4144 | * megaraid_sysfs_show_app_hndl - display application handle for this adapter | |
a69b74d3 RD |
4145 | * @cdev : class device object representation for the host |
4146 | * @buf : buffer to send data to | |
1da177e4 LT |
4147 | * |
4148 | * Display the handle used by the applications while executing management | |
4149 | * tasks on the adapter. We invoke a management module API to get the adapter | |
4150 | * handle, since we do not interface with applications directly. | |
1da177e4 LT |
4151 | */ |
4152 | static ssize_t | |
4153 | megaraid_sysfs_show_app_hndl(struct class_device *cdev, char *buf) | |
4154 | { | |
4155 | struct Scsi_Host *shost = class_to_shost(cdev); | |
4156 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); | |
4157 | uint32_t app_hndl; | |
4158 | ||
4159 | app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); | |
4160 | ||
4161 | return snprintf(buf, 8, "%u\n", app_hndl); | |
4162 | } | |
4163 | ||
4164 | ||
4165 | /** | |
4166 | * megaraid_sysfs_show_ldnum - display the logical drive number for this device | |
a69b74d3 RD |
4167 | * @dev : device object representation for the scsi device |
4168 | * @attr : device attribute to show | |
4169 | * @buf : buffer to send data to | |
1da177e4 LT |
4170 | * |
4171 | * Display the logical drive number for the device in question, if it a valid | |
a69b74d3 RD |
4172 | * logical drive. For physical devices, "-1" is returned. |
4173 | * | |
4174 | * The logical drive number is displayed in following format: | |
1da177e4 LT |
4175 | * |
4176 | * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> | |
1da177e4 | 4177 | * |
a69b74d3 | 4178 | * <int> <int> <int> <int> |
1da177e4 LT |
4179 | */ |
4180 | static ssize_t | |
10523b3b | 4181 | megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4182 | { |
4183 | struct scsi_device *sdev = to_scsi_device(dev); | |
4184 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); | |
4185 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4186 | int scsi_id = -1; | |
4187 | int logical_drv = -1; | |
4188 | int ldid_map = -1; | |
4189 | uint32_t app_hndl = 0; | |
4190 | int mapped_sdev_id; | |
4191 | int rval; | |
4192 | int i; | |
4193 | ||
4194 | if (raid_dev->random_del_supported && | |
4195 | MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { | |
4196 | ||
4197 | rval = megaraid_sysfs_get_ldmap(adapter); | |
4198 | if (rval == 0) { | |
4199 | ||
4200 | for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { | |
4201 | ||
4202 | mapped_sdev_id = sdev->id; | |
4203 | ||
4204 | if (sdev->id > adapter->init_id) { | |
4205 | mapped_sdev_id -= 1; | |
4206 | } | |
4207 | ||
4208 | if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { | |
4209 | ||
4210 | scsi_id = sdev->id; | |
4211 | ||
4212 | logical_drv = i; | |
4213 | ||
4214 | ldid_map = raid_dev->curr_ldmap[i]; | |
4215 | ||
4216 | app_hndl = mraid_mm_adapter_app_handle( | |
4217 | adapter->unique_id); | |
4218 | ||
4219 | break; | |
4220 | } | |
4221 | } | |
4222 | } | |
4223 | else { | |
4224 | con_log(CL_ANN, (KERN_NOTICE | |
4225 | "megaraid: sysfs get ld map failed: %x\n", | |
4226 | rval)); | |
4227 | } | |
4228 | } | |
4229 | ||
4230 | return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, | |
4231 | ldid_map, app_hndl); | |
4232 | } | |
4233 | ||
4234 | ||
4235 | /* | |
4236 | * END: Mailbox Low Level Driver | |
4237 | */ | |
4238 | module_init(megaraid_init); | |
4239 | module_exit(megaraid_exit); | |
4240 | ||
4241 | /* vim: set ts=8 sw=8 tw=78 ai si: */ |