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 | * | |
395cf969 | 70 | * For history of changes, see Documentation/scsi/ChangeLog.megaraid |
1da177e4 LT |
71 | */ |
72 | ||
5a0e3ad6 | 73 | #include <linux/slab.h> |
acf3368f | 74 | #include <linux/module.h> |
1da177e4 LT |
75 | #include "megaraid_mbox.h" |
76 | ||
77 | static int megaraid_init(void); | |
78 | static void megaraid_exit(void); | |
79 | ||
80 | static int megaraid_probe_one(struct pci_dev*, const struct pci_device_id *); | |
81 | static void megaraid_detach_one(struct pci_dev *); | |
5457b6a6 | 82 | static void megaraid_mbox_shutdown(struct pci_dev *); |
1da177e4 LT |
83 | |
84 | static int megaraid_io_attach(adapter_t *); | |
85 | static void megaraid_io_detach(adapter_t *); | |
86 | ||
87 | static int megaraid_init_mbox(adapter_t *); | |
88 | static void megaraid_fini_mbox(adapter_t *); | |
89 | ||
90 | static int megaraid_alloc_cmd_packets(adapter_t *); | |
91 | static void megaraid_free_cmd_packets(adapter_t *); | |
92 | ||
93 | static int megaraid_mbox_setup_dma_pools(adapter_t *); | |
94 | static void megaraid_mbox_teardown_dma_pools(adapter_t *); | |
95 | ||
96 | static int megaraid_sysfs_alloc_resources(adapter_t *); | |
97 | static void megaraid_sysfs_free_resources(adapter_t *); | |
98 | ||
99 | static int megaraid_abort_handler(struct scsi_cmnd *); | |
100 | static int megaraid_reset_handler(struct scsi_cmnd *); | |
101 | ||
102 | static int mbox_post_sync_cmd(adapter_t *, uint8_t []); | |
103 | static int mbox_post_sync_cmd_fast(adapter_t *, uint8_t []); | |
104 | static int megaraid_busywait_mbox(mraid_device_t *); | |
105 | static int megaraid_mbox_product_info(adapter_t *); | |
106 | static int megaraid_mbox_extended_cdb(adapter_t *); | |
107 | static int megaraid_mbox_support_ha(adapter_t *, uint16_t *); | |
108 | static int megaraid_mbox_support_random_del(adapter_t *); | |
109 | static int megaraid_mbox_get_max_sg(adapter_t *); | |
110 | static void megaraid_mbox_enum_raid_scsi(adapter_t *); | |
111 | static void megaraid_mbox_flush_cache(adapter_t *); | |
cd96d96f | 112 | static int megaraid_mbox_fire_sync_cmd(adapter_t *); |
1da177e4 LT |
113 | |
114 | static void megaraid_mbox_display_scb(adapter_t *, scb_t *); | |
115 | static void megaraid_mbox_setup_device_map(adapter_t *); | |
116 | ||
f281233d | 117 | static int megaraid_queue_command(struct Scsi_Host *, struct scsi_cmnd *); |
1da177e4 LT |
118 | static scb_t *megaraid_mbox_build_cmd(adapter_t *, struct scsi_cmnd *, int *); |
119 | static void megaraid_mbox_runpendq(adapter_t *, scb_t *); | |
120 | static void megaraid_mbox_prepare_pthru(adapter_t *, scb_t *, | |
121 | struct scsi_cmnd *); | |
122 | static void megaraid_mbox_prepare_epthru(adapter_t *, scb_t *, | |
123 | struct scsi_cmnd *); | |
124 | ||
7d12e780 | 125 | static irqreturn_t megaraid_isr(int, void *); |
1da177e4 LT |
126 | |
127 | static void megaraid_mbox_dpc(unsigned long); | |
128 | ||
ee959b00 | 129 | static ssize_t megaraid_sysfs_show_app_hndl(struct device *, struct device_attribute *attr, char *); |
10523b3b | 130 | static ssize_t megaraid_sysfs_show_ldnum(struct device *, struct device_attribute *attr, char *); |
1da177e4 LT |
131 | |
132 | static int megaraid_cmm_register(adapter_t *); | |
133 | static int megaraid_cmm_unregister(adapter_t *); | |
134 | static int megaraid_mbox_mm_handler(unsigned long, uioc_t *, uint32_t); | |
135 | static int megaraid_mbox_mm_command(adapter_t *, uioc_t *); | |
136 | static void megaraid_mbox_mm_done(adapter_t *, scb_t *); | |
137 | static int gather_hbainfo(adapter_t *, mraid_hba_info_t *); | |
138 | static int wait_till_fw_empty(adapter_t *); | |
139 | ||
140 | ||
141 | ||
cd96d96f | 142 | MODULE_AUTHOR("megaraidlinux@lsi.com"); |
1da177e4 LT |
143 | MODULE_DESCRIPTION("LSI Logic MegaRAID Mailbox Driver"); |
144 | MODULE_LICENSE("GPL"); | |
145 | MODULE_VERSION(MEGARAID_VERSION); | |
146 | ||
147 | /* | |
148 | * ### modules parameters for driver ### | |
149 | */ | |
150 | ||
a69b74d3 | 151 | /* |
1da177e4 LT |
152 | * Set to enable driver to expose unconfigured disk to kernel |
153 | */ | |
154 | static int megaraid_expose_unconf_disks = 0; | |
155 | module_param_named(unconf_disks, megaraid_expose_unconf_disks, int, 0); | |
156 | MODULE_PARM_DESC(unconf_disks, | |
157 | "Set to expose unconfigured disks to kernel (default=0)"); | |
158 | ||
a69b74d3 | 159 | /* |
1da177e4 LT |
160 | * driver wait time if the adapter's mailbox is busy |
161 | */ | |
162 | static unsigned int max_mbox_busy_wait = MBOX_BUSY_WAIT; | |
163 | module_param_named(busy_wait, max_mbox_busy_wait, int, 0); | |
164 | MODULE_PARM_DESC(busy_wait, | |
165 | "Max wait for mailbox in microseconds if busy (default=10)"); | |
166 | ||
a69b74d3 | 167 | /* |
1da177e4 LT |
168 | * number of sectors per IO command |
169 | */ | |
170 | static unsigned int megaraid_max_sectors = MBOX_MAX_SECTORS; | |
171 | module_param_named(max_sectors, megaraid_max_sectors, int, 0); | |
172 | MODULE_PARM_DESC(max_sectors, | |
173 | "Maximum number of sectors per IO command (default=128)"); | |
174 | ||
a69b74d3 | 175 | /* |
1da177e4 LT |
176 | * number of commands per logical unit |
177 | */ | |
178 | static unsigned int megaraid_cmd_per_lun = MBOX_DEF_CMD_PER_LUN; | |
179 | module_param_named(cmd_per_lun, megaraid_cmd_per_lun, int, 0); | |
180 | MODULE_PARM_DESC(cmd_per_lun, | |
181 | "Maximum number of commands per logical unit (default=64)"); | |
182 | ||
183 | ||
a69b74d3 | 184 | /* |
1da177e4 LT |
185 | * Fast driver load option, skip scanning for physical devices during load. |
186 | * This would result in non-disk devices being skipped during driver load | |
187 | * time. These can be later added though, using /proc/scsi/scsi | |
188 | */ | |
189 | static unsigned int megaraid_fast_load = 0; | |
190 | module_param_named(fast_load, megaraid_fast_load, int, 0); | |
191 | MODULE_PARM_DESC(fast_load, | |
192 | "Faster loading of the driver, skips physical devices! (default=0)"); | |
193 | ||
194 | ||
a69b74d3 | 195 | /* |
1da177e4 LT |
196 | * mraid_debug level - threshold for amount of information to be displayed by |
197 | * the driver. This level can be changed through modules parameters, ioctl or | |
198 | * sysfs/proc interface. By default, print the announcement messages only. | |
199 | */ | |
200 | int mraid_debug_level = CL_ANN; | |
201 | module_param_named(debug_level, mraid_debug_level, int, 0); | |
202 | MODULE_PARM_DESC(debug_level, "Debug level for driver (default=0)"); | |
203 | ||
204 | /* | |
205 | * ### global data ### | |
206 | */ | |
207 | static uint8_t megaraid_mbox_version[8] = | |
672b2d38 | 208 | { 0x02, 0x20, 0x04, 0x06, 3, 7, 20, 5 }; |
1da177e4 LT |
209 | |
210 | ||
211 | /* | |
212 | * PCI table for all supported controllers. | |
213 | */ | |
214 | static struct pci_device_id pci_id_table_g[] = { | |
215 | { | |
216 | PCI_VENDOR_ID_DELL, | |
217 | PCI_DEVICE_ID_PERC4_DI_DISCOVERY, | |
218 | PCI_VENDOR_ID_DELL, | |
219 | PCI_SUBSYS_ID_PERC4_DI_DISCOVERY, | |
220 | }, | |
221 | { | |
222 | PCI_VENDOR_ID_LSI_LOGIC, | |
223 | PCI_DEVICE_ID_PERC4_SC, | |
224 | PCI_VENDOR_ID_DELL, | |
225 | PCI_SUBSYS_ID_PERC4_SC, | |
226 | }, | |
227 | { | |
228 | PCI_VENDOR_ID_LSI_LOGIC, | |
229 | PCI_DEVICE_ID_PERC4_DC, | |
230 | PCI_VENDOR_ID_DELL, | |
231 | PCI_SUBSYS_ID_PERC4_DC, | |
232 | }, | |
233 | { | |
234 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
235 | PCI_DEVICE_ID_VERDE, |
236 | PCI_ANY_ID, | |
237 | PCI_ANY_ID, | |
1da177e4 LT |
238 | }, |
239 | { | |
240 | PCI_VENDOR_ID_DELL, | |
241 | PCI_DEVICE_ID_PERC4_DI_EVERGLADES, | |
242 | PCI_VENDOR_ID_DELL, | |
243 | PCI_SUBSYS_ID_PERC4_DI_EVERGLADES, | |
244 | }, | |
245 | { | |
246 | PCI_VENDOR_ID_DELL, | |
247 | PCI_DEVICE_ID_PERC4E_SI_BIGBEND, | |
248 | PCI_VENDOR_ID_DELL, | |
249 | PCI_SUBSYS_ID_PERC4E_SI_BIGBEND, | |
250 | }, | |
251 | { | |
252 | PCI_VENDOR_ID_DELL, | |
253 | PCI_DEVICE_ID_PERC4E_DI_KOBUK, | |
254 | PCI_VENDOR_ID_DELL, | |
255 | PCI_SUBSYS_ID_PERC4E_DI_KOBUK, | |
256 | }, | |
257 | { | |
258 | PCI_VENDOR_ID_DELL, | |
259 | PCI_DEVICE_ID_PERC4E_DI_CORVETTE, | |
260 | PCI_VENDOR_ID_DELL, | |
261 | PCI_SUBSYS_ID_PERC4E_DI_CORVETTE, | |
262 | }, | |
263 | { | |
264 | PCI_VENDOR_ID_DELL, | |
265 | PCI_DEVICE_ID_PERC4E_DI_EXPEDITION, | |
266 | PCI_VENDOR_ID_DELL, | |
267 | PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION, | |
268 | }, | |
269 | { | |
270 | PCI_VENDOR_ID_DELL, | |
271 | PCI_DEVICE_ID_PERC4E_DI_GUADALUPE, | |
272 | PCI_VENDOR_ID_DELL, | |
273 | PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE, | |
274 | }, | |
275 | { | |
276 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
277 | PCI_DEVICE_ID_DOBSON, |
278 | PCI_ANY_ID, | |
279 | PCI_ANY_ID, | |
1da177e4 LT |
280 | }, |
281 | { | |
282 | PCI_VENDOR_ID_AMI, | |
283 | PCI_DEVICE_ID_AMI_MEGARAID3, | |
ed7e8ef7 JS |
284 | PCI_ANY_ID, |
285 | PCI_ANY_ID, | |
1da177e4 LT |
286 | }, |
287 | { | |
288 | PCI_VENDOR_ID_LSI_LOGIC, | |
ed7e8ef7 JS |
289 | PCI_DEVICE_ID_AMI_MEGARAID3, |
290 | PCI_ANY_ID, | |
291 | PCI_ANY_ID, | |
1da177e4 LT |
292 | }, |
293 | { | |
294 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
295 | PCI_DEVICE_ID_LINDSAY, |
296 | PCI_ANY_ID, | |
297 | PCI_ANY_ID, | |
1da177e4 | 298 | }, |
1da177e4 LT |
299 | {0} /* Terminating entry */ |
300 | }; | |
301 | MODULE_DEVICE_TABLE(pci, pci_id_table_g); | |
302 | ||
303 | ||
382db811 | 304 | static struct pci_driver megaraid_pci_driver = { |
1da177e4 LT |
305 | .name = "megaraid", |
306 | .id_table = pci_id_table_g, | |
307 | .probe = megaraid_probe_one, | |
308 | .remove = __devexit_p(megaraid_detach_one), | |
5457b6a6 | 309 | .shutdown = megaraid_mbox_shutdown, |
1da177e4 LT |
310 | }; |
311 | ||
312 | ||
313 | ||
314 | // definitions for the device attributes for exporting logical drive number | |
315 | // for a scsi address (Host, Channel, Id, Lun) | |
316 | ||
ee959b00 | 317 | DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl, |
1da177e4 LT |
318 | NULL); |
319 | ||
320 | // Host template initializer for megaraid mbox sysfs device attributes | |
ee959b00 TJ |
321 | static struct device_attribute *megaraid_shost_attrs[] = { |
322 | &dev_attr_megaraid_mbox_app_hndl, | |
1da177e4 LT |
323 | NULL, |
324 | }; | |
325 | ||
326 | ||
327 | DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL); | |
328 | ||
329 | // Host template initializer for megaraid mbox sysfs device attributes | |
330 | static struct device_attribute *megaraid_sdev_attrs[] = { | |
331 | &dev_attr_megaraid_mbox_ld, | |
332 | NULL, | |
333 | }; | |
334 | ||
f4c8aa11 | 335 | /** |
336 | * megaraid_change_queue_depth - Change the device's queue depth | |
337 | * @sdev: scsi device struct | |
338 | * @qdepth: depth to set | |
e881a172 | 339 | * @reason: calling context |
f4c8aa11 | 340 | * |
341 | * Return value: | |
342 | * actual depth set | |
a69b74d3 | 343 | */ |
e881a172 MC |
344 | static int megaraid_change_queue_depth(struct scsi_device *sdev, int qdepth, |
345 | int reason) | |
f4c8aa11 | 346 | { |
e881a172 MC |
347 | if (reason != SCSI_QDEPTH_DEFAULT) |
348 | return -EOPNOTSUPP; | |
349 | ||
f4c8aa11 | 350 | if (qdepth > MBOX_MAX_SCSI_CMDS) |
351 | qdepth = MBOX_MAX_SCSI_CMDS; | |
352 | scsi_adjust_queue_depth(sdev, 0, qdepth); | |
353 | return sdev->queue_depth; | |
354 | } | |
1da177e4 LT |
355 | |
356 | /* | |
357 | * Scsi host template for megaraid unified driver | |
358 | */ | |
359 | static struct scsi_host_template megaraid_template_g = { | |
360 | .module = THIS_MODULE, | |
361 | .name = "LSI Logic MegaRAID driver", | |
362 | .proc_name = "megaraid", | |
363 | .queuecommand = megaraid_queue_command, | |
364 | .eh_abort_handler = megaraid_abort_handler, | |
365 | .eh_device_reset_handler = megaraid_reset_handler, | |
366 | .eh_bus_reset_handler = megaraid_reset_handler, | |
367 | .eh_host_reset_handler = megaraid_reset_handler, | |
f4c8aa11 | 368 | .change_queue_depth = megaraid_change_queue_depth, |
1da177e4 LT |
369 | .use_clustering = ENABLE_CLUSTERING, |
370 | .sdev_attrs = megaraid_sdev_attrs, | |
371 | .shost_attrs = megaraid_shost_attrs, | |
372 | }; | |
373 | ||
374 | ||
375 | /** | |
376 | * megaraid_init - module load hook | |
377 | * | |
378 | * We register ourselves as hotplug enabled module and let PCI subsystem | |
a69b74d3 RD |
379 | * discover our adapters. |
380 | */ | |
1da177e4 LT |
381 | static int __init |
382 | megaraid_init(void) | |
383 | { | |
384 | int rval; | |
385 | ||
386 | // Announce the driver version | |
387 | con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION, | |
388 | MEGARAID_EXT_VERSION)); | |
389 | ||
390 | // check validity of module parameters | |
391 | if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) { | |
392 | ||
393 | con_log(CL_ANN, (KERN_WARNING | |
394 | "megaraid mailbox: max commands per lun reset to %d\n", | |
395 | MBOX_MAX_SCSI_CMDS)); | |
396 | ||
397 | megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS; | |
398 | } | |
399 | ||
400 | ||
401 | // register as a PCI hot-plug driver module | |
382db811 | 402 | rval = pci_register_driver(&megaraid_pci_driver); |
672b2d38 | 403 | if (rval < 0) { |
1da177e4 LT |
404 | con_log(CL_ANN, (KERN_WARNING |
405 | "megaraid: could not register hotplug support.\n")); | |
406 | } | |
407 | ||
408 | return rval; | |
409 | } | |
410 | ||
411 | ||
412 | /** | |
413 | * megaraid_exit - driver unload entry point | |
414 | * | |
a69b74d3 | 415 | * We simply unwrap the megaraid_init routine here. |
1da177e4 LT |
416 | */ |
417 | static void __exit | |
418 | megaraid_exit(void) | |
419 | { | |
420 | con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n")); | |
421 | ||
422 | // unregister as PCI hotplug driver | |
382db811 | 423 | pci_unregister_driver(&megaraid_pci_driver); |
1da177e4 LT |
424 | |
425 | return; | |
426 | } | |
427 | ||
428 | ||
429 | /** | |
430 | * megaraid_probe_one - PCI hotplug entry point | |
a69b74d3 RD |
431 | * @pdev : handle to this controller's PCI configuration space |
432 | * @id : pci device id of the class of controllers | |
1da177e4 LT |
433 | * |
434 | * This routine should be called whenever a new adapter is detected by the | |
3a4fa0a2 | 435 | * PCI hotplug susbsystem. |
a69b74d3 | 436 | */ |
1da177e4 LT |
437 | static int __devinit |
438 | megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) | |
439 | { | |
440 | adapter_t *adapter; | |
441 | ||
442 | ||
443 | // detected a new controller | |
444 | con_log(CL_ANN, (KERN_INFO | |
445 | "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", | |
446 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
447 | pdev->subsystem_device)); | |
448 | ||
449 | con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number, | |
450 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn))); | |
451 | ||
452 | if (pci_enable_device(pdev)) { | |
453 | con_log(CL_ANN, (KERN_WARNING | |
454 | "megaraid: pci_enable_device failed\n")); | |
455 | ||
456 | return -ENODEV; | |
457 | } | |
458 | ||
459 | // Enable bus-mastering on this controller | |
460 | pci_set_master(pdev); | |
461 | ||
462 | // Allocate the per driver initialization structure | |
dd00cc48 | 463 | adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL); |
1da177e4 LT |
464 | |
465 | if (adapter == NULL) { | |
466 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 467 | "megaraid: out of memory, %s %d.\n", __func__, __LINE__)); |
1da177e4 LT |
468 | |
469 | goto out_probe_one; | |
470 | } | |
1da177e4 LT |
471 | |
472 | ||
473 | // set up PCI related soft state and other pre-known parameters | |
474 | adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
475 | adapter->irq = pdev->irq; | |
476 | adapter->pdev = pdev; | |
477 | ||
478 | atomic_set(&adapter->being_detached, 0); | |
479 | ||
480 | // Setup the default DMA mask. This would be changed later on | |
481 | // depending on hardware capabilities | |
284901a9 | 482 | if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(32)) != 0) { |
1da177e4 LT |
483 | |
484 | con_log(CL_ANN, (KERN_WARNING | |
485 | "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); | |
486 | ||
487 | goto out_free_adapter; | |
488 | } | |
489 | ||
490 | ||
491 | // Initialize the synchronization lock for kernel and LLD | |
492 | spin_lock_init(&adapter->lock); | |
1da177e4 LT |
493 | |
494 | // Initialize the command queues: the list of free SCBs and the list | |
495 | // of pending SCBs. | |
496 | INIT_LIST_HEAD(&adapter->kscb_pool); | |
497 | spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); | |
498 | ||
499 | INIT_LIST_HEAD(&adapter->pend_list); | |
500 | spin_lock_init(PENDING_LIST_LOCK(adapter)); | |
501 | ||
502 | INIT_LIST_HEAD(&adapter->completed_list); | |
503 | spin_lock_init(COMPLETED_LIST_LOCK(adapter)); | |
504 | ||
505 | ||
506 | // Start the mailbox based controller | |
507 | if (megaraid_init_mbox(adapter) != 0) { | |
508 | con_log(CL_ANN, (KERN_WARNING | |
509 | "megaraid: maibox adapter did not initialize\n")); | |
510 | ||
511 | goto out_free_adapter; | |
512 | } | |
513 | ||
514 | // Register with LSI Common Management Module | |
515 | if (megaraid_cmm_register(adapter) != 0) { | |
516 | ||
517 | con_log(CL_ANN, (KERN_WARNING | |
518 | "megaraid: could not register with management module\n")); | |
519 | ||
520 | goto out_fini_mbox; | |
521 | } | |
522 | ||
523 | // setup adapter handle in PCI soft state | |
524 | pci_set_drvdata(pdev, adapter); | |
525 | ||
526 | // attach with scsi mid-layer | |
527 | if (megaraid_io_attach(adapter) != 0) { | |
528 | ||
529 | con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); | |
530 | ||
531 | goto out_cmm_unreg; | |
532 | } | |
533 | ||
534 | return 0; | |
535 | ||
536 | out_cmm_unreg: | |
537 | pci_set_drvdata(pdev, NULL); | |
538 | megaraid_cmm_unregister(adapter); | |
539 | out_fini_mbox: | |
540 | megaraid_fini_mbox(adapter); | |
541 | out_free_adapter: | |
542 | kfree(adapter); | |
543 | out_probe_one: | |
544 | pci_disable_device(pdev); | |
545 | ||
546 | return -ENODEV; | |
547 | } | |
548 | ||
549 | ||
550 | /** | |
a69b74d3 RD |
551 | * megaraid_detach_one - release framework resources and call LLD release routine |
552 | * @pdev : handle for our PCI cofiguration space | |
1da177e4 LT |
553 | * |
554 | * This routine is called during driver unload. We free all the allocated | |
555 | * resources and call the corresponding LLD so that it can also release all | |
556 | * its resources. | |
557 | * | |
a69b74d3 RD |
558 | * This routine is also called from the PCI hotplug system. |
559 | */ | |
1da177e4 LT |
560 | static void |
561 | megaraid_detach_one(struct pci_dev *pdev) | |
562 | { | |
563 | adapter_t *adapter; | |
564 | struct Scsi_Host *host; | |
565 | ||
566 | ||
567 | // Start a rollback on this adapter | |
568 | adapter = pci_get_drvdata(pdev); | |
569 | ||
570 | if (!adapter) { | |
571 | con_log(CL_ANN, (KERN_CRIT | |
572 | "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
573 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
574 | pdev->subsystem_device)); | |
575 | ||
576 | return; | |
577 | } | |
578 | else { | |
579 | con_log(CL_ANN, (KERN_NOTICE | |
580 | "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
581 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
582 | pdev->subsystem_device)); | |
583 | } | |
584 | ||
585 | ||
586 | host = adapter->host; | |
587 | ||
588 | // do not allow any more requests from the management module for this | |
589 | // adapter. | |
590 | // FIXME: How do we account for the request which might still be | |
591 | // pending with us? | |
592 | atomic_set(&adapter->being_detached, 1); | |
593 | ||
594 | // detach from the IO sub-system | |
595 | megaraid_io_detach(adapter); | |
596 | ||
597 | // reset the device state in the PCI structure. We check this | |
598 | // condition when we enter here. If the device state is NULL, | |
599 | // that would mean the device has already been removed | |
600 | pci_set_drvdata(pdev, NULL); | |
601 | ||
602 | // Unregister from common management module | |
603 | // | |
604 | // FIXME: this must return success or failure for conditions if there | |
605 | // is a command pending with LLD or not. | |
606 | megaraid_cmm_unregister(adapter); | |
607 | ||
608 | // finalize the mailbox based controller and release all resources | |
609 | megaraid_fini_mbox(adapter); | |
610 | ||
611 | kfree(adapter); | |
612 | ||
613 | scsi_host_put(host); | |
614 | ||
615 | pci_disable_device(pdev); | |
616 | ||
617 | return; | |
618 | } | |
619 | ||
620 | ||
621 | /** | |
622 | * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA | |
a69b74d3 | 623 | * @pdev : generic driver model device |
1da177e4 | 624 | * |
a69b74d3 | 625 | * Shutdown notification, perform flush cache. |
1da177e4 LT |
626 | */ |
627 | static void | |
5457b6a6 | 628 | megaraid_mbox_shutdown(struct pci_dev *pdev) |
1da177e4 | 629 | { |
5457b6a6 | 630 | adapter_t *adapter = pci_get_drvdata(pdev); |
1da177e4 LT |
631 | static int counter; |
632 | ||
633 | if (!adapter) { | |
634 | con_log(CL_ANN, (KERN_WARNING | |
635 | "megaraid: null device in shutdown\n")); | |
636 | return; | |
637 | } | |
638 | ||
639 | // flush caches now | |
640 | con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", | |
641 | counter++)); | |
642 | ||
643 | megaraid_mbox_flush_cache(adapter); | |
644 | ||
645 | con_log(CL_ANN, ("done\n")); | |
646 | } | |
647 | ||
648 | ||
649 | /** | |
650 | * megaraid_io_attach - attach a device with the IO subsystem | |
a69b74d3 | 651 | * @adapter : controller's soft state |
1da177e4 | 652 | * |
a69b74d3 RD |
653 | * Attach this device with the IO subsystem. |
654 | */ | |
1da177e4 LT |
655 | static int |
656 | megaraid_io_attach(adapter_t *adapter) | |
657 | { | |
658 | struct Scsi_Host *host; | |
659 | ||
660 | // Initialize SCSI Host structure | |
661 | host = scsi_host_alloc(&megaraid_template_g, 8); | |
662 | if (!host) { | |
663 | con_log(CL_ANN, (KERN_WARNING | |
664 | "megaraid mbox: scsi_register failed\n")); | |
665 | ||
666 | return -1; | |
667 | } | |
668 | ||
669 | SCSIHOST2ADAP(host) = (caddr_t)adapter; | |
670 | adapter->host = host; | |
671 | ||
1da177e4 LT |
672 | host->irq = adapter->irq; |
673 | host->unique_id = adapter->unique_id; | |
674 | host->can_queue = adapter->max_cmds; | |
675 | host->this_id = adapter->init_id; | |
676 | host->sg_tablesize = adapter->sglen; | |
677 | host->max_sectors = adapter->max_sectors; | |
678 | host->cmd_per_lun = adapter->cmd_per_lun; | |
679 | host->max_channel = adapter->max_channel; | |
680 | host->max_id = adapter->max_target; | |
681 | host->max_lun = adapter->max_lun; | |
682 | ||
683 | ||
684 | // notify mid-layer about the new controller | |
685 | if (scsi_add_host(host, &adapter->pdev->dev)) { | |
686 | ||
687 | con_log(CL_ANN, (KERN_WARNING | |
688 | "megaraid mbox: scsi_add_host failed\n")); | |
689 | ||
690 | scsi_host_put(host); | |
691 | ||
692 | return -1; | |
693 | } | |
694 | ||
695 | scsi_scan_host(host); | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
700 | ||
701 | /** | |
702 | * megaraid_io_detach - detach a device from the IO subsystem | |
a69b74d3 | 703 | * @adapter : controller's soft state |
1da177e4 | 704 | * |
a69b74d3 RD |
705 | * Detach this device from the IO subsystem. |
706 | */ | |
1da177e4 LT |
707 | static void |
708 | megaraid_io_detach(adapter_t *adapter) | |
709 | { | |
710 | struct Scsi_Host *host; | |
711 | ||
712 | con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); | |
713 | ||
714 | host = adapter->host; | |
715 | ||
716 | scsi_remove_host(host); | |
717 | ||
718 | return; | |
719 | } | |
720 | ||
721 | ||
722 | /* | |
723 | * START: Mailbox Low Level Driver | |
724 | * | |
725 | * This is section specific to the single mailbox based controllers | |
726 | */ | |
727 | ||
728 | /** | |
729 | * megaraid_init_mbox - initialize controller | |
a69b74d3 | 730 | * @adapter : our soft state |
1da177e4 | 731 | * |
a69b74d3 RD |
732 | * - Allocate 16-byte aligned mailbox memory for firmware handshake |
733 | * - Allocate controller's memory resources | |
734 | * - Find out all initialization data | |
735 | * - Allocate memory required for all the commands | |
736 | * - Use internal library of FW routines, build up complete soft state | |
1da177e4 | 737 | */ |
cedfb178 | 738 | static int __devinit |
1da177e4 LT |
739 | megaraid_init_mbox(adapter_t *adapter) |
740 | { | |
741 | struct pci_dev *pdev; | |
742 | mraid_device_t *raid_dev; | |
743 | int i; | |
fbf60802 | 744 | uint32_t magic64; |
1da177e4 LT |
745 | |
746 | ||
747 | adapter->ito = MBOX_TIMEOUT; | |
748 | pdev = adapter->pdev; | |
749 | ||
750 | /* | |
751 | * Allocate and initialize the init data structure for mailbox | |
752 | * controllers | |
753 | */ | |
dd00cc48 | 754 | raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL); |
1da177e4 LT |
755 | if (raid_dev == NULL) return -1; |
756 | ||
1da177e4 LT |
757 | |
758 | /* | |
759 | * Attach the adapter soft state to raid device soft state | |
760 | */ | |
761 | adapter->raid_device = (caddr_t)raid_dev; | |
762 | raid_dev->fast_load = megaraid_fast_load; | |
763 | ||
764 | ||
765 | // our baseport | |
766 | raid_dev->baseport = pci_resource_start(pdev, 0); | |
767 | ||
768 | if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { | |
769 | ||
770 | con_log(CL_ANN, (KERN_WARNING | |
771 | "megaraid: mem region busy\n")); | |
772 | ||
773 | goto out_free_raid_dev; | |
774 | } | |
775 | ||
776 | raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); | |
777 | ||
778 | if (!raid_dev->baseaddr) { | |
779 | ||
780 | con_log(CL_ANN, (KERN_WARNING | |
781 | "megaraid: could not map hba memory\n") ); | |
782 | ||
783 | goto out_release_regions; | |
784 | } | |
785 | ||
cd96d96f SP |
786 | /* initialize the mutual exclusion lock for the mailbox */ |
787 | spin_lock_init(&raid_dev->mailbox_lock); | |
788 | ||
789 | /* allocate memory required for commands */ | |
790 | if (megaraid_alloc_cmd_packets(adapter) != 0) | |
791 | goto out_iounmap; | |
1da177e4 | 792 | |
cd96d96f SP |
793 | /* |
794 | * Issue SYNC cmd to flush the pending cmds in the adapter | |
795 | * and initialize its internal state | |
796 | */ | |
797 | ||
798 | if (megaraid_mbox_fire_sync_cmd(adapter)) | |
799 | con_log(CL_ANN, ("megaraid: sync cmd failed\n")); | |
800 | ||
801 | /* | |
802 | * Setup the rest of the soft state using the library of | |
803 | * FW routines | |
804 | */ | |
805 | ||
806 | /* request IRQ and register the interrupt service routine */ | |
1d6f359a | 807 | if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid", |
1da177e4 LT |
808 | adapter)) { |
809 | ||
810 | con_log(CL_ANN, (KERN_WARNING | |
811 | "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); | |
cd96d96f | 812 | goto out_alloc_cmds; |
1da177e4 | 813 | |
1da177e4 LT |
814 | } |
815 | ||
816 | // Product info | |
cd96d96f SP |
817 | if (megaraid_mbox_product_info(adapter) != 0) |
818 | goto out_free_irq; | |
1da177e4 LT |
819 | |
820 | // Do we support extended CDBs | |
821 | adapter->max_cdb_sz = 10; | |
822 | if (megaraid_mbox_extended_cdb(adapter) == 0) { | |
823 | adapter->max_cdb_sz = 16; | |
824 | } | |
825 | ||
826 | /* | |
827 | * Do we support cluster environment, if we do, what is the initiator | |
828 | * id. | |
829 | * NOTE: In a non-cluster aware firmware environment, the LLD should | |
830 | * return 7 as initiator id. | |
831 | */ | |
832 | adapter->ha = 0; | |
833 | adapter->init_id = -1; | |
834 | if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { | |
835 | adapter->ha = 1; | |
836 | } | |
837 | ||
838 | /* | |
839 | * Prepare the device ids array to have the mapping between the kernel | |
840 | * device address and megaraid device address. | |
841 | * We export the physical devices on their actual addresses. The | |
842 | * logical drives are exported on a virtual SCSI channel | |
843 | */ | |
844 | megaraid_mbox_setup_device_map(adapter); | |
845 | ||
846 | // If the firmware supports random deletion, update the device id map | |
847 | if (megaraid_mbox_support_random_del(adapter)) { | |
848 | ||
849 | // Change the logical drives numbers in device_ids array one | |
850 | // slot in device_ids is reserved for target id, that's why | |
851 | // "<=" below | |
852 | for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { | |
853 | adapter->device_ids[adapter->max_channel][i] += 0x80; | |
854 | } | |
855 | adapter->device_ids[adapter->max_channel][adapter->init_id] = | |
856 | 0xFF; | |
857 | ||
858 | raid_dev->random_del_supported = 1; | |
859 | } | |
860 | ||
861 | /* | |
862 | * find out the maximum number of scatter-gather elements supported by | |
863 | * this firmware | |
864 | */ | |
865 | adapter->sglen = megaraid_mbox_get_max_sg(adapter); | |
866 | ||
867 | // enumerate RAID and SCSI channels so that all devices on SCSI | |
868 | // channels can later be exported, including disk devices | |
869 | megaraid_mbox_enum_raid_scsi(adapter); | |
870 | ||
871 | /* | |
872 | * Other parameters required by upper layer | |
873 | * | |
874 | * maximum number of sectors per IO command | |
875 | */ | |
876 | adapter->max_sectors = megaraid_max_sectors; | |
877 | ||
878 | /* | |
879 | * number of queued commands per LUN. | |
880 | */ | |
881 | adapter->cmd_per_lun = megaraid_cmd_per_lun; | |
882 | ||
883 | /* | |
884 | * Allocate resources required to issue FW calls, when sysfs is | |
885 | * accessed | |
886 | */ | |
cd96d96f SP |
887 | if (megaraid_sysfs_alloc_resources(adapter) != 0) |
888 | goto out_free_irq; | |
1da177e4 LT |
889 | |
890 | // Set the DMA mask to 64-bit. All supported controllers as capable of | |
891 | // DMA in this range | |
fbf60802 JS |
892 | pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64); |
893 | ||
894 | if (((magic64 == HBA_SIGNATURE_64_BIT) && | |
895 | ((adapter->pdev->subsystem_device != | |
8741ca71 | 896 | PCI_SUBSYS_ID_MEGARAID_SATA_150_6) && |
fbf60802 JS |
897 | (adapter->pdev->subsystem_device != |
898 | PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) || | |
899 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
900 | adapter->pdev->device == PCI_DEVICE_ID_VERDE) || | |
901 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
902 | adapter->pdev->device == PCI_DEVICE_ID_DOBSON) || | |
903 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
904 | adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) || | |
905 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
906 | adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) || | |
907 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
908 | adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) { | |
6a35528a | 909 | if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(64))) { |
fbf60802 JS |
910 | con_log(CL_ANN, (KERN_WARNING |
911 | "megaraid: DMA mask for 64-bit failed\n")); | |
912 | ||
284901a9 | 913 | if (pci_set_dma_mask (adapter->pdev, DMA_BIT_MASK(32))) { |
fbf60802 JS |
914 | con_log(CL_ANN, (KERN_WARNING |
915 | "megaraid: 32-bit DMA mask failed\n")); | |
916 | goto out_free_sysfs_res; | |
917 | } | |
918 | } | |
1da177e4 LT |
919 | } |
920 | ||
921 | // setup tasklet for DPC | |
922 | tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, | |
923 | (unsigned long)adapter); | |
924 | ||
925 | con_log(CL_DLEVEL1, (KERN_INFO | |
926 | "megaraid mbox hba successfully initialized\n")); | |
927 | ||
928 | return 0; | |
929 | ||
930 | out_free_sysfs_res: | |
931 | megaraid_sysfs_free_resources(adapter); | |
1da177e4 LT |
932 | out_free_irq: |
933 | free_irq(adapter->irq, adapter); | |
cd96d96f SP |
934 | out_alloc_cmds: |
935 | megaraid_free_cmd_packets(adapter); | |
1da177e4 LT |
936 | out_iounmap: |
937 | iounmap(raid_dev->baseaddr); | |
938 | out_release_regions: | |
939 | pci_release_regions(pdev); | |
940 | out_free_raid_dev: | |
941 | kfree(raid_dev); | |
942 | ||
943 | return -1; | |
944 | } | |
945 | ||
946 | ||
947 | /** | |
948 | * megaraid_fini_mbox - undo controller initialization | |
a69b74d3 | 949 | * @adapter : our soft state |
1da177e4 LT |
950 | */ |
951 | static void | |
952 | megaraid_fini_mbox(adapter_t *adapter) | |
953 | { | |
954 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
955 | ||
956 | // flush all caches | |
957 | megaraid_mbox_flush_cache(adapter); | |
958 | ||
959 | tasklet_kill(&adapter->dpc_h); | |
960 | ||
961 | megaraid_sysfs_free_resources(adapter); | |
962 | ||
963 | megaraid_free_cmd_packets(adapter); | |
964 | ||
965 | free_irq(adapter->irq, adapter); | |
966 | ||
967 | iounmap(raid_dev->baseaddr); | |
968 | ||
969 | pci_release_regions(adapter->pdev); | |
970 | ||
971 | kfree(raid_dev); | |
972 | ||
973 | return; | |
974 | } | |
975 | ||
976 | ||
977 | /** | |
978 | * megaraid_alloc_cmd_packets - allocate shared mailbox | |
a69b74d3 | 979 | * @adapter : soft state of the raid controller |
1da177e4 LT |
980 | * |
981 | * Allocate and align the shared mailbox. This maibox is used to issue | |
982 | * all the commands. For IO based controllers, the mailbox is also regsitered | |
983 | * with the FW. Allocate memory for all commands as well. | |
a69b74d3 | 984 | * This is our big allocator. |
1da177e4 LT |
985 | */ |
986 | static int | |
987 | megaraid_alloc_cmd_packets(adapter_t *adapter) | |
988 | { | |
989 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
990 | struct pci_dev *pdev; | |
991 | unsigned long align; | |
992 | scb_t *scb; | |
993 | mbox_ccb_t *ccb; | |
994 | struct mraid_pci_blk *epthru_pci_blk; | |
995 | struct mraid_pci_blk *sg_pci_blk; | |
996 | struct mraid_pci_blk *mbox_pci_blk; | |
997 | int i; | |
998 | ||
999 | pdev = adapter->pdev; | |
1000 | ||
1001 | /* | |
1002 | * Setup the mailbox | |
1003 | * Allocate the common 16-byte aligned memory for the handshake | |
1004 | * mailbox. | |
1005 | */ | |
1006 | raid_dev->una_mbox64 = pci_alloc_consistent(adapter->pdev, | |
1007 | sizeof(mbox64_t), &raid_dev->una_mbox64_dma); | |
1008 | ||
1009 | if (!raid_dev->una_mbox64) { | |
1010 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1011 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1012 | __LINE__)); |
1013 | return -1; | |
1014 | } | |
1015 | memset(raid_dev->una_mbox64, 0, sizeof(mbox64_t)); | |
1016 | ||
1017 | /* | |
1018 | * Align the mailbox at 16-byte boundary | |
1019 | */ | |
1020 | raid_dev->mbox = &raid_dev->una_mbox64->mbox32; | |
1021 | ||
1022 | raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & | |
1023 | (~0UL ^ 0xFUL)); | |
1024 | ||
1025 | raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); | |
1026 | ||
1027 | align = ((void *)raid_dev->mbox - | |
1028 | ((void *)&raid_dev->una_mbox64->mbox32)); | |
1029 | ||
1030 | raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + | |
1031 | align; | |
1032 | ||
1033 | // Allocate memory for commands issued internally | |
1034 | adapter->ibuf = pci_alloc_consistent(pdev, MBOX_IBUF_SIZE, | |
1035 | &adapter->ibuf_dma_h); | |
1036 | if (!adapter->ibuf) { | |
1037 | ||
1038 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1039 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1040 | __LINE__)); |
1041 | ||
1042 | goto out_free_common_mbox; | |
1043 | } | |
1044 | memset(adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
1045 | ||
1046 | // Allocate memory for our SCSI Command Blocks and their associated | |
1047 | // memory | |
1048 | ||
1049 | /* | |
1050 | * Allocate memory for the base list of scb. Later allocate memory for | |
1051 | * CCBs and embedded components of each CCB and point the pointers in | |
1052 | * scb to the allocated components | |
1053 | * NOTE: The code to allocate SCB will be duplicated in all the LLD | |
1054 | * since the calling routine does not yet know the number of available | |
1055 | * commands. | |
1056 | */ | |
dd00cc48 | 1057 | adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL); |
1da177e4 LT |
1058 | |
1059 | if (adapter->kscb_list == NULL) { | |
1060 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1061 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1062 | __LINE__)); |
1063 | goto out_free_ibuf; | |
1064 | } | |
1da177e4 LT |
1065 | |
1066 | // memory allocation for our command packets | |
1067 | if (megaraid_mbox_setup_dma_pools(adapter) != 0) { | |
1068 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1069 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1070 | __LINE__)); |
1071 | goto out_free_scb_list; | |
1072 | } | |
1073 | ||
1074 | // Adjust the scb pointers and link in the free pool | |
1075 | epthru_pci_blk = raid_dev->epthru_pool; | |
1076 | sg_pci_blk = raid_dev->sg_pool; | |
1077 | mbox_pci_blk = raid_dev->mbox_pool; | |
1078 | ||
1079 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1080 | scb = adapter->kscb_list + i; | |
1081 | ccb = raid_dev->ccb_list + i; | |
1082 | ||
1083 | ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); | |
1084 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
1085 | ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); | |
1086 | ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; | |
1087 | ||
1088 | // make sure the mailbox is aligned properly | |
1089 | if (ccb->mbox_dma_h & 0x0F) { | |
1090 | con_log(CL_ANN, (KERN_CRIT | |
1091 | "megaraid mbox: not aligned on 16-bytes\n")); | |
1092 | ||
1093 | goto out_teardown_dma_pools; | |
1094 | } | |
1095 | ||
1096 | ccb->epthru = (mraid_epassthru_t *) | |
1097 | epthru_pci_blk[i].vaddr; | |
1098 | ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; | |
1099 | ccb->pthru = (mraid_passthru_t *)ccb->epthru; | |
1100 | ccb->pthru_dma_h = ccb->epthru_dma_h; | |
1101 | ||
1102 | ||
1103 | ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; | |
1104 | ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; | |
1105 | ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; | |
1106 | ||
1107 | scb->ccb = (caddr_t)ccb; | |
1108 | scb->gp = 0; | |
1109 | ||
1110 | scb->sno = i; // command index | |
1111 | ||
1112 | scb->scp = NULL; | |
1113 | scb->state = SCB_FREE; | |
1114 | scb->dma_direction = PCI_DMA_NONE; | |
1115 | scb->dma_type = MRAID_DMA_NONE; | |
1116 | scb->dev_channel = -1; | |
1117 | scb->dev_target = -1; | |
1118 | ||
1119 | // put scb in the free pool | |
1120 | list_add_tail(&scb->list, &adapter->kscb_pool); | |
1121 | } | |
1122 | ||
1123 | return 0; | |
1124 | ||
1125 | out_teardown_dma_pools: | |
1126 | megaraid_mbox_teardown_dma_pools(adapter); | |
1127 | out_free_scb_list: | |
1128 | kfree(adapter->kscb_list); | |
1129 | out_free_ibuf: | |
1130 | pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, | |
1131 | adapter->ibuf_dma_h); | |
1132 | out_free_common_mbox: | |
1133 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1134 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1135 | ||
1136 | return -1; | |
1137 | } | |
1138 | ||
1139 | ||
1140 | /** | |
1141 | * megaraid_free_cmd_packets - free memory | |
a69b74d3 | 1142 | * @adapter : soft state of the raid controller |
1da177e4 | 1143 | * |
a69b74d3 | 1144 | * Release memory resources allocated for commands. |
1da177e4 LT |
1145 | */ |
1146 | static void | |
1147 | megaraid_free_cmd_packets(adapter_t *adapter) | |
1148 | { | |
1149 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1150 | ||
1151 | megaraid_mbox_teardown_dma_pools(adapter); | |
1152 | ||
1153 | kfree(adapter->kscb_list); | |
1154 | ||
1155 | pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE, | |
1156 | (void *)adapter->ibuf, adapter->ibuf_dma_h); | |
1157 | ||
1158 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1159 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1160 | return; | |
1161 | } | |
1162 | ||
1163 | ||
1164 | /** | |
1165 | * megaraid_mbox_setup_dma_pools - setup dma pool for command packets | |
a69b74d3 | 1166 | * @adapter : HBA soft state |
1da177e4 | 1167 | * |
a69b74d3 RD |
1168 | * Setup the dma pools for mailbox, passthru and extended passthru structures, |
1169 | * and scatter-gather lists. | |
1da177e4 LT |
1170 | */ |
1171 | static int | |
1172 | megaraid_mbox_setup_dma_pools(adapter_t *adapter) | |
1173 | { | |
1174 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1175 | struct mraid_pci_blk *epthru_pci_blk; | |
1176 | struct mraid_pci_blk *sg_pci_blk; | |
1177 | struct mraid_pci_blk *mbox_pci_blk; | |
1178 | int i; | |
1179 | ||
1180 | ||
1181 | ||
1182 | // Allocate memory for 16-bytes aligned mailboxes | |
1183 | raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool", | |
1184 | adapter->pdev, | |
1185 | sizeof(mbox64_t) + 16, | |
1186 | 16, 0); | |
1187 | ||
1188 | if (raid_dev->mbox_pool_handle == NULL) { | |
1189 | goto fail_setup_dma_pool; | |
1190 | } | |
1191 | ||
1192 | mbox_pci_blk = raid_dev->mbox_pool; | |
1193 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1194 | mbox_pci_blk[i].vaddr = pci_pool_alloc( | |
1195 | raid_dev->mbox_pool_handle, | |
1196 | GFP_KERNEL, | |
1197 | &mbox_pci_blk[i].dma_addr); | |
1198 | if (!mbox_pci_blk[i].vaddr) { | |
1199 | goto fail_setup_dma_pool; | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | /* | |
1204 | * Allocate memory for each embedded passthru strucuture pointer | |
1205 | * Request for a 128 bytes aligned structure for each passthru command | |
1206 | * structure | |
1207 | * Since passthru and extended passthru commands are exclusive, they | |
1208 | * share common memory pool. Passthru structures piggyback on memory | |
1209 | * allocted to extended passthru since passthru is smaller of the two | |
1210 | */ | |
1211 | raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru", | |
1212 | adapter->pdev, sizeof(mraid_epassthru_t), 128, 0); | |
1213 | ||
1214 | if (raid_dev->epthru_pool_handle == NULL) { | |
1215 | goto fail_setup_dma_pool; | |
1216 | } | |
1217 | ||
1218 | epthru_pci_blk = raid_dev->epthru_pool; | |
1219 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1220 | epthru_pci_blk[i].vaddr = pci_pool_alloc( | |
1221 | raid_dev->epthru_pool_handle, | |
1222 | GFP_KERNEL, | |
1223 | &epthru_pci_blk[i].dma_addr); | |
1224 | if (!epthru_pci_blk[i].vaddr) { | |
1225 | goto fail_setup_dma_pool; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | ||
1230 | // Allocate memory for each scatter-gather list. Request for 512 bytes | |
1231 | // alignment for each sg list | |
1232 | raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg", | |
1233 | adapter->pdev, | |
1234 | sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, | |
1235 | 512, 0); | |
1236 | ||
1237 | if (raid_dev->sg_pool_handle == NULL) { | |
1238 | goto fail_setup_dma_pool; | |
1239 | } | |
1240 | ||
1241 | sg_pci_blk = raid_dev->sg_pool; | |
1242 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1243 | sg_pci_blk[i].vaddr = pci_pool_alloc( | |
1244 | raid_dev->sg_pool_handle, | |
1245 | GFP_KERNEL, | |
1246 | &sg_pci_blk[i].dma_addr); | |
1247 | if (!sg_pci_blk[i].vaddr) { | |
1248 | goto fail_setup_dma_pool; | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | return 0; | |
1253 | ||
1254 | fail_setup_dma_pool: | |
1255 | megaraid_mbox_teardown_dma_pools(adapter); | |
1256 | return -1; | |
1257 | } | |
1258 | ||
1259 | ||
1260 | /** | |
1261 | * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets | |
a69b74d3 | 1262 | * @adapter : HBA soft state |
1da177e4 | 1263 | * |
a69b74d3 RD |
1264 | * Teardown the dma pool for mailbox, passthru and extended passthru |
1265 | * structures, and scatter-gather lists. | |
1da177e4 LT |
1266 | */ |
1267 | static void | |
1268 | megaraid_mbox_teardown_dma_pools(adapter_t *adapter) | |
1269 | { | |
1270 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1271 | struct mraid_pci_blk *epthru_pci_blk; | |
1272 | struct mraid_pci_blk *sg_pci_blk; | |
1273 | struct mraid_pci_blk *mbox_pci_blk; | |
1274 | int i; | |
1275 | ||
1276 | ||
1277 | sg_pci_blk = raid_dev->sg_pool; | |
1278 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { | |
1279 | pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, | |
1280 | sg_pci_blk[i].dma_addr); | |
1281 | } | |
1282 | if (raid_dev->sg_pool_handle) | |
1283 | pci_pool_destroy(raid_dev->sg_pool_handle); | |
1284 | ||
1285 | ||
1286 | epthru_pci_blk = raid_dev->epthru_pool; | |
1287 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { | |
1288 | pci_pool_free(raid_dev->epthru_pool_handle, | |
1289 | epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); | |
1290 | } | |
1291 | if (raid_dev->epthru_pool_handle) | |
1292 | pci_pool_destroy(raid_dev->epthru_pool_handle); | |
1293 | ||
1294 | ||
1295 | mbox_pci_blk = raid_dev->mbox_pool; | |
1296 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { | |
1297 | pci_pool_free(raid_dev->mbox_pool_handle, | |
1298 | mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); | |
1299 | } | |
1300 | if (raid_dev->mbox_pool_handle) | |
1301 | pci_pool_destroy(raid_dev->mbox_pool_handle); | |
1302 | ||
1303 | return; | |
1304 | } | |
1305 | ||
1306 | ||
1307 | /** | |
1308 | * megaraid_alloc_scb - detach and return a scb from the free list | |
1309 | * @adapter : controller's soft state | |
a69b74d3 | 1310 | * @scp : pointer to the scsi command to be executed |
1da177e4 | 1311 | * |
a69b74d3 RD |
1312 | * Return the scb from the head of the free list. %NULL if there are none |
1313 | * available. | |
1314 | */ | |
858119e1 | 1315 | static scb_t * |
1da177e4 LT |
1316 | megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) |
1317 | { | |
1318 | struct list_head *head = &adapter->kscb_pool; | |
1319 | scb_t *scb = NULL; | |
1320 | unsigned long flags; | |
1321 | ||
1322 | // detach scb from free pool | |
1323 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1324 | ||
1325 | if (list_empty(head)) { | |
1326 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1327 | return NULL; | |
1328 | } | |
1329 | ||
1330 | scb = list_entry(head->next, scb_t, list); | |
1331 | list_del_init(&scb->list); | |
1332 | ||
1333 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1334 | ||
1335 | scb->state = SCB_ACTIVE; | |
1336 | scb->scp = scp; | |
1337 | scb->dma_type = MRAID_DMA_NONE; | |
1338 | ||
1339 | return scb; | |
1340 | } | |
1341 | ||
1342 | ||
1343 | /** | |
1344 | * megaraid_dealloc_scb - return the scb to the free pool | |
1345 | * @adapter : controller's soft state | |
1346 | * @scb : scb to be freed | |
1347 | * | |
a69b74d3 | 1348 | * Return the scb back to the free list of scbs. The caller must 'flush' the |
1da177e4 LT |
1349 | * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. |
1350 | * NOTE NOTE: Make sure the scb is not on any list before calling this | |
1351 | * routine. | |
a69b74d3 | 1352 | */ |
1da177e4 LT |
1353 | static inline void |
1354 | megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) | |
1355 | { | |
1356 | unsigned long flags; | |
1357 | ||
1358 | // put scb in the free pool | |
1359 | scb->state = SCB_FREE; | |
1360 | scb->scp = NULL; | |
1361 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1362 | ||
1363 | list_add(&scb->list, &adapter->kscb_pool); | |
1364 | ||
1365 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1366 | ||
1367 | return; | |
1368 | } | |
1369 | ||
1370 | ||
1371 | /** | |
1372 | * megaraid_mbox_mksgl - make the scatter-gather list | |
a69b74d3 RD |
1373 | * @adapter : controller's soft state |
1374 | * @scb : scsi control block | |
1da177e4 | 1375 | * |
a69b74d3 | 1376 | * Prepare the scatter-gather list. |
1da177e4 | 1377 | */ |
858119e1 | 1378 | static int |
1da177e4 LT |
1379 | megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) |
1380 | { | |
1381 | struct scatterlist *sgl; | |
1382 | mbox_ccb_t *ccb; | |
1da177e4 LT |
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 | ||
32fbac22 FT |
1391 | sgcnt = scsi_dma_map(scp); |
1392 | BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen); | |
1393 | ||
1da177e4 | 1394 | // no mapping required if no data to be transferred |
32fbac22 | 1395 | if (!sgcnt) |
1da177e4 LT |
1396 | return 0; |
1397 | ||
1da177e4 LT |
1398 | scb->dma_type = MRAID_DMA_WSG; |
1399 | ||
32fbac22 | 1400 | scsi_for_each_sg(scp, sgl, sgcnt, i) { |
1da177e4 LT |
1401 | ccb->sgl64[i].address = sg_dma_address(sgl); |
1402 | ccb->sgl64[i].length = sg_dma_len(sgl); | |
1403 | } | |
1404 | ||
1405 | // Return count of SG nodes | |
1406 | return sgcnt; | |
1407 | } | |
1408 | ||
1409 | ||
1410 | /** | |
1411 | * mbox_post_cmd - issue a mailbox command | |
a69b74d3 RD |
1412 | * @adapter : controller's soft state |
1413 | * @scb : command to be issued | |
1da177e4 | 1414 | * |
a69b74d3 | 1415 | * Post the command to the controller if mailbox is available. |
1da177e4 | 1416 | */ |
858119e1 | 1417 | static int |
1da177e4 LT |
1418 | mbox_post_cmd(adapter_t *adapter, scb_t *scb) |
1419 | { | |
1420 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1421 | mbox64_t *mbox64; | |
1422 | mbox_t *mbox; | |
1423 | mbox_ccb_t *ccb; | |
1424 | unsigned long flags; | |
1425 | unsigned int i = 0; | |
1426 | ||
1427 | ||
1428 | ccb = (mbox_ccb_t *)scb->ccb; | |
1429 | mbox = raid_dev->mbox; | |
1430 | mbox64 = raid_dev->mbox64; | |
1431 | ||
1432 | /* | |
1433 | * Check for busy mailbox. If it is, return failure - the caller | |
1434 | * should retry later. | |
1435 | */ | |
1436 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
1437 | ||
1438 | if (unlikely(mbox->busy)) { | |
1439 | do { | |
1440 | udelay(1); | |
1441 | i++; | |
1442 | rmb(); | |
1443 | } while(mbox->busy && (i < max_mbox_busy_wait)); | |
1444 | ||
1445 | if (mbox->busy) { | |
1446 | ||
1447 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1448 | ||
1449 | return -1; | |
1450 | } | |
1451 | } | |
1452 | ||
1453 | ||
1454 | // Copy this command's mailbox data into "adapter's" mailbox | |
1455 | memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); | |
1456 | mbox->cmdid = scb->sno; | |
1457 | ||
1458 | adapter->outstanding_cmds++; | |
1459 | ||
32fbac22 FT |
1460 | if (scb->dma_direction == PCI_DMA_TODEVICE) |
1461 | pci_dma_sync_sg_for_device(adapter->pdev, | |
1462 | scsi_sglist(scb->scp), | |
1463 | scsi_sg_count(scb->scp), | |
1464 | PCI_DMA_TODEVICE); | |
1da177e4 LT |
1465 | |
1466 | mbox->busy = 1; // Set busy | |
1467 | mbox->poll = 0; | |
1468 | mbox->ack = 0; | |
1469 | wmb(); | |
1470 | ||
1471 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
1472 | ||
1473 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1474 | ||
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | ||
1479 | /** | |
1480 | * megaraid_queue_command - generic queue entry point for all LLDs | |
1481 | * @scp : pointer to the scsi command to be executed | |
1482 | * @done : callback routine to be called after the cmd has be completed | |
1483 | * | |
1484 | * Queue entry point for mailbox based controllers. | |
1485 | */ | |
1486 | static int | |
f281233d | 1487 | megaraid_queue_command_lck(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) |
1da177e4 LT |
1488 | { |
1489 | adapter_t *adapter; | |
1490 | scb_t *scb; | |
1491 | int if_busy; | |
1492 | ||
1493 | adapter = SCP2ADAPTER(scp); | |
1494 | scp->scsi_done = done; | |
1495 | scp->result = 0; | |
1496 | ||
1da177e4 LT |
1497 | /* |
1498 | * Allocate and build a SCB request | |
1499 | * if_busy flag will be set if megaraid_mbox_build_cmd() command could | |
1500 | * not allocate scb. We will return non-zero status in that case. | |
1501 | * NOTE: scb can be null even though certain commands completed | |
1502 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would | |
1503 | * return 0 in that case, and we would do the callback right away. | |
1504 | */ | |
1505 | if_busy = 0; | |
f2c8dc40 | 1506 | scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); |
1da177e4 LT |
1507 | if (!scb) { // command already completed |
1508 | done(scp); | |
1509 | return 0; | |
1510 | } | |
1511 | ||
f2c8dc40 | 1512 | megaraid_mbox_runpendq(adapter, scb); |
1da177e4 LT |
1513 | return if_busy; |
1514 | } | |
1515 | ||
f281233d JG |
1516 | static DEF_SCSI_QCMD(megaraid_queue_command) |
1517 | ||
1da177e4 | 1518 | /** |
a69b74d3 RD |
1519 | * megaraid_mbox_build_cmd - transform the mid-layer scsi commands |
1520 | * @adapter : controller's soft state | |
1521 | * @scp : mid-layer scsi command pointer | |
1522 | * @busy : set if request could not be completed because of lack of | |
1da177e4 LT |
1523 | * resources |
1524 | * | |
a69b74d3 RD |
1525 | * Transform the mid-layer scsi command to megaraid firmware lingua. |
1526 | * Convert the command issued by mid-layer to format understood by megaraid | |
1527 | * firmware. We also complete certain commands without sending them to firmware. | |
1da177e4 LT |
1528 | */ |
1529 | static scb_t * | |
1530 | megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) | |
1531 | { | |
1532 | mraid_device_t *rdev = ADAP2RAIDDEV(adapter); | |
1533 | int channel; | |
1534 | int target; | |
1535 | int islogical; | |
1536 | mbox_ccb_t *ccb; | |
1537 | mraid_passthru_t *pthru; | |
1538 | mbox64_t *mbox64; | |
1539 | mbox_t *mbox; | |
1540 | scb_t *scb; | |
1541 | char skip[] = "skipping"; | |
1542 | char scan[] = "scanning"; | |
1543 | char *ss; | |
1544 | ||
1545 | ||
1546 | /* | |
1547 | * Get the appropriate device map for the device this command is | |
1548 | * intended for | |
1549 | */ | |
1550 | MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); | |
1551 | ||
1552 | /* | |
1553 | * Logical drive commands | |
1554 | */ | |
1555 | if (islogical) { | |
1556 | switch (scp->cmnd[0]) { | |
1557 | case TEST_UNIT_READY: | |
1558 | /* | |
1559 | * Do we support clustering and is the support enabled | |
1560 | * If no, return success always | |
1561 | */ | |
1562 | if (!adapter->ha) { | |
1563 | scp->result = (DID_OK << 16); | |
1564 | return NULL; | |
1565 | } | |
1566 | ||
1567 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1568 | scp->result = (DID_ERROR << 16); | |
1569 | *busy = 1; | |
1570 | return NULL; | |
1571 | } | |
1572 | ||
1573 | scb->dma_direction = scp->sc_data_direction; | |
1574 | scb->dev_channel = 0xFF; | |
1575 | scb->dev_target = target; | |
1576 | ccb = (mbox_ccb_t *)scb->ccb; | |
1577 | ||
1578 | /* | |
1579 | * The command id will be provided by the command | |
1580 | * issuance routine | |
1581 | */ | |
1582 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1583 | ccb->raw_mbox[2] = RESERVATION_STATUS; | |
1584 | ccb->raw_mbox[3] = target; | |
1585 | ||
1586 | return scb; | |
1587 | ||
1588 | case MODE_SENSE: | |
32fbac22 FT |
1589 | { |
1590 | struct scatterlist *sgl; | |
1591 | caddr_t vaddr; | |
1da177e4 | 1592 | |
32fbac22 | 1593 | sgl = scsi_sglist(scp); |
45711f1a JA |
1594 | if (sg_page(sgl)) { |
1595 | vaddr = (caddr_t) sg_virt(&sgl[0]); | |
1da177e4 | 1596 | |
32fbac22 | 1597 | memset(vaddr, 0, scp->cmnd[4]); |
1da177e4 LT |
1598 | } |
1599 | else { | |
32fbac22 FT |
1600 | con_log(CL_ANN, (KERN_WARNING |
1601 | "megaraid mailbox: invalid sg:%d\n", | |
1602 | __LINE__)); | |
1da177e4 | 1603 | } |
32fbac22 FT |
1604 | } |
1605 | scp->result = (DID_OK << 16); | |
1606 | return NULL; | |
1da177e4 LT |
1607 | |
1608 | case INQUIRY: | |
1609 | /* | |
1610 | * Display the channel scan for logical drives | |
1611 | * Do not display scan for a channel if already done. | |
1612 | */ | |
1613 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1614 | ||
1615 | con_log(CL_ANN, (KERN_INFO | |
1616 | "scsi[%d]: scanning scsi channel %d", | |
1617 | adapter->host->host_no, | |
1618 | SCP2CHANNEL(scp))); | |
1619 | ||
1620 | con_log(CL_ANN, ( | |
1621 | " [virtual] for logical drives\n")); | |
1622 | ||
1623 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1624 | } | |
1625 | ||
aa677bc7 JS |
1626 | if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { |
1627 | scp->sense_buffer[0] = 0x70; | |
1628 | scp->sense_buffer[2] = ILLEGAL_REQUEST; | |
1629 | scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; | |
1630 | scp->result = CHECK_CONDITION << 1; | |
1631 | return NULL; | |
1632 | } | |
1633 | ||
1da177e4 LT |
1634 | /* Fall through */ |
1635 | ||
1636 | case READ_CAPACITY: | |
1637 | /* | |
1638 | * Do not allow LUN > 0 for logical drives and | |
1639 | * requests for more than 40 logical drives | |
1640 | */ | |
1641 | if (SCP2LUN(scp)) { | |
1642 | scp->result = (DID_BAD_TARGET << 16); | |
1643 | return NULL; | |
1644 | } | |
1645 | if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { | |
1646 | scp->result = (DID_BAD_TARGET << 16); | |
1647 | return NULL; | |
1648 | } | |
1649 | ||
1650 | ||
1651 | /* Allocate a SCB and initialize passthru */ | |
1652 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1653 | scp->result = (DID_ERROR << 16); | |
1654 | *busy = 1; | |
1655 | return NULL; | |
1656 | } | |
1657 | ||
1658 | ccb = (mbox_ccb_t *)scb->ccb; | |
1659 | scb->dev_channel = 0xFF; | |
1660 | scb->dev_target = target; | |
1661 | pthru = ccb->pthru; | |
1662 | mbox = ccb->mbox; | |
1663 | mbox64 = ccb->mbox64; | |
1664 | ||
1665 | pthru->timeout = 0; | |
1666 | pthru->ars = 1; | |
1667 | pthru->reqsenselen = 14; | |
1668 | pthru->islogical = 1; | |
1669 | pthru->logdrv = target; | |
1670 | pthru->cdblen = scp->cmd_len; | |
1671 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1672 | ||
1673 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1674 | scb->dma_direction = scp->sc_data_direction; | |
1675 | ||
32fbac22 | 1676 | pthru->dataxferlen = scsi_bufflen(scp); |
1da177e4 LT |
1677 | pthru->dataxferaddr = ccb->sgl_dma_h; |
1678 | pthru->numsge = megaraid_mbox_mksgl(adapter, | |
1679 | scb); | |
1680 | ||
1681 | mbox->xferaddr = 0xFFFFFFFF; | |
1682 | mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; | |
1683 | mbox64->xferaddr_hi = 0; | |
1684 | ||
1685 | return scb; | |
1686 | ||
1687 | case READ_6: | |
1688 | case WRITE_6: | |
1689 | case READ_10: | |
1690 | case WRITE_10: | |
1691 | case READ_12: | |
1692 | case WRITE_12: | |
1693 | ||
1694 | /* | |
1695 | * Allocate a SCB and initialize mailbox | |
1696 | */ | |
1697 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1698 | scp->result = (DID_ERROR << 16); | |
1699 | *busy = 1; | |
1700 | return NULL; | |
1701 | } | |
1702 | ccb = (mbox_ccb_t *)scb->ccb; | |
1703 | scb->dev_channel = 0xFF; | |
1704 | scb->dev_target = target; | |
1705 | mbox = ccb->mbox; | |
1706 | mbox64 = ccb->mbox64; | |
1707 | mbox->logdrv = target; | |
1708 | ||
1709 | /* | |
1710 | * A little HACK: 2nd bit is zero for all scsi read | |
1711 | * commands and is set for all scsi write commands | |
1712 | */ | |
1713 | mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: | |
1714 | MBOXCMD_LREAD64 ; | |
1715 | ||
1716 | /* | |
1717 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
1718 | */ | |
1719 | if (scp->cmd_len == 6) { | |
1720 | mbox->numsectors = (uint32_t)scp->cmnd[4]; | |
1721 | mbox->lba = | |
1722 | ((uint32_t)scp->cmnd[1] << 16) | | |
1723 | ((uint32_t)scp->cmnd[2] << 8) | | |
1724 | (uint32_t)scp->cmnd[3]; | |
1725 | ||
1726 | mbox->lba &= 0x1FFFFF; | |
1727 | } | |
1728 | ||
1729 | /* | |
1730 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
1731 | */ | |
1732 | else if (scp->cmd_len == 10) { | |
1733 | mbox->numsectors = | |
1734 | (uint32_t)scp->cmnd[8] | | |
1735 | ((uint32_t)scp->cmnd[7] << 8); | |
1736 | mbox->lba = | |
1737 | ((uint32_t)scp->cmnd[2] << 24) | | |
1738 | ((uint32_t)scp->cmnd[3] << 16) | | |
1739 | ((uint32_t)scp->cmnd[4] << 8) | | |
1740 | (uint32_t)scp->cmnd[5]; | |
1741 | } | |
1742 | ||
1743 | /* | |
1744 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
1745 | */ | |
1746 | else if (scp->cmd_len == 12) { | |
1747 | mbox->lba = | |
1748 | ((uint32_t)scp->cmnd[2] << 24) | | |
1749 | ((uint32_t)scp->cmnd[3] << 16) | | |
1750 | ((uint32_t)scp->cmnd[4] << 8) | | |
1751 | (uint32_t)scp->cmnd[5]; | |
1752 | ||
1753 | mbox->numsectors = | |
1754 | ((uint32_t)scp->cmnd[6] << 24) | | |
1755 | ((uint32_t)scp->cmnd[7] << 16) | | |
1756 | ((uint32_t)scp->cmnd[8] << 8) | | |
1757 | (uint32_t)scp->cmnd[9]; | |
1758 | } | |
1759 | else { | |
1760 | con_log(CL_ANN, (KERN_WARNING | |
1761 | "megaraid: unsupported CDB length\n")); | |
1762 | ||
1763 | megaraid_dealloc_scb(adapter, scb); | |
1764 | ||
1765 | scp->result = (DID_ERROR << 16); | |
1766 | return NULL; | |
1767 | } | |
1768 | ||
1769 | scb->dma_direction = scp->sc_data_direction; | |
1770 | ||
1771 | // Calculate Scatter-Gather info | |
1772 | mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; | |
1773 | mbox->numsge = megaraid_mbox_mksgl(adapter, | |
1774 | scb); | |
1775 | mbox->xferaddr = 0xFFFFFFFF; | |
1776 | mbox64->xferaddr_hi = 0; | |
1777 | ||
1778 | return scb; | |
1779 | ||
1780 | case RESERVE: | |
1781 | case RELEASE: | |
1782 | /* | |
1783 | * Do we support clustering and is the support enabled | |
1784 | */ | |
1785 | if (!adapter->ha) { | |
1786 | scp->result = (DID_BAD_TARGET << 16); | |
1787 | return NULL; | |
1788 | } | |
1789 | ||
1790 | /* | |
1791 | * Allocate a SCB and initialize mailbox | |
1792 | */ | |
1793 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1794 | scp->result = (DID_ERROR << 16); | |
1795 | *busy = 1; | |
1796 | return NULL; | |
1797 | } | |
1798 | ||
1799 | ccb = (mbox_ccb_t *)scb->ccb; | |
1800 | scb->dev_channel = 0xFF; | |
1801 | scb->dev_target = target; | |
1802 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1803 | ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? | |
1804 | RESERVE_LD : RELEASE_LD; | |
1805 | ||
1806 | ccb->raw_mbox[3] = target; | |
1807 | scb->dma_direction = scp->sc_data_direction; | |
1808 | ||
1809 | return scb; | |
1810 | ||
1811 | default: | |
1812 | scp->result = (DID_BAD_TARGET << 16); | |
1813 | return NULL; | |
1814 | } | |
1815 | } | |
1816 | else { // Passthru device commands | |
1817 | ||
1818 | // Do not allow access to target id > 15 or LUN > 7 | |
1819 | if (target > 15 || SCP2LUN(scp) > 7) { | |
1820 | scp->result = (DID_BAD_TARGET << 16); | |
1821 | return NULL; | |
1822 | } | |
1823 | ||
1824 | // if fast load option was set and scan for last device is | |
1825 | // over, reset the fast_load flag so that during a possible | |
1826 | // next scan, devices can be made available | |
1827 | if (rdev->fast_load && (target == 15) && | |
1828 | (SCP2CHANNEL(scp) == adapter->max_channel -1)) { | |
1829 | ||
1830 | con_log(CL_ANN, (KERN_INFO | |
1831 | "megaraid[%d]: physical device scan re-enabled\n", | |
1832 | adapter->host->host_no)); | |
1833 | rdev->fast_load = 0; | |
1834 | } | |
1835 | ||
1836 | /* | |
1837 | * Display the channel scan for physical devices | |
1838 | */ | |
1839 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1840 | ||
1841 | ss = rdev->fast_load ? skip : scan; | |
1842 | ||
1843 | con_log(CL_ANN, (KERN_INFO | |
1844 | "scsi[%d]: %s scsi channel %d [Phy %d]", | |
1845 | adapter->host->host_no, ss, SCP2CHANNEL(scp), | |
1846 | channel)); | |
1847 | ||
1848 | con_log(CL_ANN, ( | |
1849 | " for non-raid devices\n")); | |
1850 | ||
1851 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1852 | } | |
1853 | ||
1854 | // disable channel sweep if fast load option given | |
1855 | if (rdev->fast_load) { | |
1856 | scp->result = (DID_BAD_TARGET << 16); | |
1857 | return NULL; | |
1858 | } | |
1859 | ||
1860 | // Allocate a SCB and initialize passthru | |
1861 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1862 | scp->result = (DID_ERROR << 16); | |
1863 | *busy = 1; | |
1864 | return NULL; | |
1865 | } | |
1866 | ||
1867 | ccb = (mbox_ccb_t *)scb->ccb; | |
1868 | scb->dev_channel = channel; | |
1869 | scb->dev_target = target; | |
1870 | scb->dma_direction = scp->sc_data_direction; | |
1871 | mbox = ccb->mbox; | |
1872 | mbox64 = ccb->mbox64; | |
1873 | ||
1874 | // Does this firmware support extended CDBs | |
1875 | if (adapter->max_cdb_sz == 16) { | |
1876 | mbox->cmd = MBOXCMD_EXTPTHRU; | |
1877 | ||
1878 | megaraid_mbox_prepare_epthru(adapter, scb, scp); | |
1879 | ||
1880 | mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; | |
1881 | mbox64->xferaddr_hi = 0; | |
1882 | mbox->xferaddr = 0xFFFFFFFF; | |
1883 | } | |
1884 | else { | |
1885 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1886 | ||
1887 | megaraid_mbox_prepare_pthru(adapter, scb, scp); | |
1888 | ||
1889 | mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; | |
1890 | mbox64->xferaddr_hi = 0; | |
1891 | mbox->xferaddr = 0xFFFFFFFF; | |
1892 | } | |
1893 | return scb; | |
1894 | } | |
1895 | ||
1896 | // NOT REACHED | |
1897 | } | |
1898 | ||
1899 | ||
1900 | /** | |
1901 | * megaraid_mbox_runpendq - execute commands queued in the pending queue | |
1902 | * @adapter : controller's soft state | |
a69b74d3 | 1903 | * @scb_q : SCB to be queued in the pending list |
1da177e4 | 1904 | * |
a69b74d3 | 1905 | * Scan the pending list for commands which are not yet issued and try to |
1da177e4 LT |
1906 | * post to the controller. The SCB can be a null pointer, which would indicate |
1907 | * no SCB to be queue, just try to execute the ones in the pending list. | |
1908 | * | |
1909 | * NOTE: We do not actually traverse the pending list. The SCBs are plucked | |
1910 | * out from the head of the pending list. If it is successfully issued, the | |
1911 | * next SCB is at the head now. | |
1912 | */ | |
1913 | static void | |
1914 | megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) | |
1915 | { | |
1916 | scb_t *scb; | |
1917 | unsigned long flags; | |
1918 | ||
1919 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1920 | ||
1921 | if (scb_q) { | |
1922 | scb_q->state = SCB_PENDQ; | |
1923 | list_add_tail(&scb_q->list, &adapter->pend_list); | |
1924 | } | |
1925 | ||
1926 | // if the adapter in not in quiescent mode, post the commands to FW | |
1927 | if (adapter->quiescent) { | |
1928 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1929 | return; | |
1930 | } | |
1931 | ||
1932 | while (!list_empty(&adapter->pend_list)) { | |
1933 | ||
1934 | assert_spin_locked(PENDING_LIST_LOCK(adapter)); | |
1935 | ||
1936 | scb = list_entry(adapter->pend_list.next, scb_t, list); | |
1937 | ||
1938 | // remove the scb from the pending list and try to | |
1939 | // issue. If we are unable to issue it, put back in | |
1940 | // the pending list and return | |
1941 | ||
1942 | list_del_init(&scb->list); | |
1943 | ||
1944 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1945 | ||
1946 | // if mailbox was busy, return SCB back to pending | |
1947 | // list. Make sure to add at the head, since that's | |
1948 | // where it would have been removed from | |
1949 | ||
1950 | scb->state = SCB_ISSUED; | |
1951 | ||
1952 | if (mbox_post_cmd(adapter, scb) != 0) { | |
1953 | ||
1954 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1955 | ||
1956 | scb->state = SCB_PENDQ; | |
1957 | ||
1958 | list_add(&scb->list, &adapter->pend_list); | |
1959 | ||
1960 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
1961 | flags); | |
1962 | ||
1963 | return; | |
1964 | } | |
1965 | ||
1966 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1967 | } | |
1968 | ||
1969 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1970 | ||
1971 | ||
1972 | return; | |
1973 | } | |
1974 | ||
1975 | ||
1976 | /** | |
1977 | * megaraid_mbox_prepare_pthru - prepare a command for physical devices | |
a69b74d3 RD |
1978 | * @adapter : pointer to controller's soft state |
1979 | * @scb : scsi control block | |
1980 | * @scp : scsi command from the mid-layer | |
1da177e4 | 1981 | * |
a69b74d3 | 1982 | * Prepare a command for the scsi physical devices. |
1da177e4 LT |
1983 | */ |
1984 | static void | |
1985 | megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, | |
1986 | struct scsi_cmnd *scp) | |
1987 | { | |
1988 | mbox_ccb_t *ccb; | |
1989 | mraid_passthru_t *pthru; | |
1990 | uint8_t channel; | |
1991 | uint8_t target; | |
1992 | ||
1993 | ccb = (mbox_ccb_t *)scb->ccb; | |
1994 | pthru = ccb->pthru; | |
1995 | channel = scb->dev_channel; | |
1996 | target = scb->dev_target; | |
1997 | ||
1998 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
1999 | pthru->timeout = 4; | |
2000 | pthru->ars = 1; | |
2001 | pthru->islogical = 0; | |
2002 | pthru->channel = 0; | |
2003 | pthru->target = (channel << 4) | target; | |
2004 | pthru->logdrv = SCP2LUN(scp); | |
2005 | pthru->reqsenselen = 14; | |
2006 | pthru->cdblen = scp->cmd_len; | |
2007 | ||
2008 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
2009 | ||
32fbac22 FT |
2010 | if (scsi_bufflen(scp)) { |
2011 | pthru->dataxferlen = scsi_bufflen(scp); | |
1da177e4 LT |
2012 | pthru->dataxferaddr = ccb->sgl_dma_h; |
2013 | pthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2014 | } | |
2015 | else { | |
2016 | pthru->dataxferaddr = 0; | |
2017 | pthru->dataxferlen = 0; | |
2018 | pthru->numsge = 0; | |
2019 | } | |
2020 | return; | |
2021 | } | |
2022 | ||
2023 | ||
2024 | /** | |
2025 | * megaraid_mbox_prepare_epthru - prepare a command for physical devices | |
a69b74d3 RD |
2026 | * @adapter : pointer to controller's soft state |
2027 | * @scb : scsi control block | |
2028 | * @scp : scsi command from the mid-layer | |
1da177e4 | 2029 | * |
a69b74d3 RD |
2030 | * Prepare a command for the scsi physical devices. This rountine prepares |
2031 | * commands for devices which can take extended CDBs (>10 bytes). | |
1da177e4 LT |
2032 | */ |
2033 | static void | |
2034 | megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, | |
2035 | struct scsi_cmnd *scp) | |
2036 | { | |
2037 | mbox_ccb_t *ccb; | |
2038 | mraid_epassthru_t *epthru; | |
2039 | uint8_t channel; | |
2040 | uint8_t target; | |
2041 | ||
2042 | ccb = (mbox_ccb_t *)scb->ccb; | |
2043 | epthru = ccb->epthru; | |
2044 | channel = scb->dev_channel; | |
2045 | target = scb->dev_target; | |
2046 | ||
2047 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
2048 | epthru->timeout = 4; | |
2049 | epthru->ars = 1; | |
2050 | epthru->islogical = 0; | |
2051 | epthru->channel = 0; | |
2052 | epthru->target = (channel << 4) | target; | |
2053 | epthru->logdrv = SCP2LUN(scp); | |
2054 | epthru->reqsenselen = 14; | |
2055 | epthru->cdblen = scp->cmd_len; | |
2056 | ||
2057 | memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); | |
2058 | ||
32fbac22 FT |
2059 | if (scsi_bufflen(scp)) { |
2060 | epthru->dataxferlen = scsi_bufflen(scp); | |
1da177e4 LT |
2061 | epthru->dataxferaddr = ccb->sgl_dma_h; |
2062 | epthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2063 | } | |
2064 | else { | |
2065 | epthru->dataxferaddr = 0; | |
2066 | epthru->dataxferlen = 0; | |
2067 | epthru->numsge = 0; | |
2068 | } | |
2069 | return; | |
2070 | } | |
2071 | ||
2072 | ||
2073 | /** | |
2074 | * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs | |
a69b74d3 | 2075 | * @adapter : controller's soft state |
1da177e4 | 2076 | * |
a69b74d3 | 2077 | * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the |
1da177e4 LT |
2078 | * completed command and put them on the completed list for later processing. |
2079 | * | |
2080 | * Returns: 1 if the interrupt is valid, 0 otherwise | |
2081 | */ | |
858119e1 | 2082 | static int |
1da177e4 LT |
2083 | megaraid_ack_sequence(adapter_t *adapter) |
2084 | { | |
2085 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2086 | mbox_t *mbox; | |
2087 | scb_t *scb; | |
2088 | uint8_t nstatus; | |
2089 | uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; | |
2090 | struct list_head clist; | |
2091 | int handled; | |
2092 | uint32_t dword; | |
2093 | unsigned long flags; | |
2094 | int i, j; | |
2095 | ||
2096 | ||
2097 | mbox = raid_dev->mbox; | |
2098 | ||
2099 | // move the SCBs from the firmware completed array to our local list | |
2100 | INIT_LIST_HEAD(&clist); | |
2101 | ||
2102 | // loop till F/W has more commands for us to complete | |
2103 | handled = 0; | |
2104 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
2105 | do { | |
2106 | /* | |
2107 | * Check if a valid interrupt is pending. If found, force the | |
2108 | * interrupt line low. | |
2109 | */ | |
2110 | dword = RDOUTDOOR(raid_dev); | |
2111 | if (dword != 0x10001234) break; | |
2112 | ||
2113 | handled = 1; | |
2114 | ||
2115 | WROUTDOOR(raid_dev, 0x10001234); | |
2116 | ||
2117 | nstatus = 0; | |
2118 | // wait for valid numstatus to post | |
2119 | for (i = 0; i < 0xFFFFF; i++) { | |
2120 | if (mbox->numstatus != 0xFF) { | |
2121 | nstatus = mbox->numstatus; | |
2122 | break; | |
2123 | } | |
2124 | rmb(); | |
2125 | } | |
2126 | mbox->numstatus = 0xFF; | |
2127 | ||
2128 | adapter->outstanding_cmds -= nstatus; | |
2129 | ||
2130 | for (i = 0; i < nstatus; i++) { | |
2131 | ||
2132 | // wait for valid command index to post | |
2133 | for (j = 0; j < 0xFFFFF; j++) { | |
2134 | if (mbox->completed[i] != 0xFF) break; | |
2135 | rmb(); | |
2136 | } | |
2137 | completed[i] = mbox->completed[i]; | |
2138 | mbox->completed[i] = 0xFF; | |
2139 | ||
2140 | if (completed[i] == 0xFF) { | |
2141 | con_log(CL_ANN, (KERN_CRIT | |
2142 | "megaraid: command posting timed out\n")); | |
2143 | ||
2144 | BUG(); | |
2145 | continue; | |
2146 | } | |
2147 | ||
2148 | // Get SCB associated with this command id | |
2149 | if (completed[i] >= MBOX_MAX_SCSI_CMDS) { | |
2150 | // a cmm command | |
2151 | scb = adapter->uscb_list + (completed[i] - | |
2152 | MBOX_MAX_SCSI_CMDS); | |
2153 | } | |
2154 | else { | |
2155 | // an os command | |
2156 | scb = adapter->kscb_list + completed[i]; | |
2157 | } | |
2158 | ||
2159 | scb->status = mbox->status; | |
2160 | list_add_tail(&scb->list, &clist); | |
2161 | } | |
2162 | ||
2163 | // Acknowledge interrupt | |
2164 | WRINDOOR(raid_dev, 0x02); | |
2165 | ||
2166 | } while(1); | |
2167 | ||
2168 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
2169 | ||
2170 | ||
2171 | // put the completed commands in the completed list. DPC would | |
2172 | // complete these commands later | |
2173 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2174 | ||
2175 | list_splice(&clist, &adapter->completed_list); | |
2176 | ||
2177 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2178 | ||
2179 | ||
2180 | // schedule the DPC if there is some work for it | |
2181 | if (handled) | |
2182 | tasklet_schedule(&adapter->dpc_h); | |
2183 | ||
2184 | return handled; | |
2185 | } | |
2186 | ||
2187 | ||
2188 | /** | |
2189 | * megaraid_isr - isr for memory based mailbox based controllers | |
a69b74d3 RD |
2190 | * @irq : irq |
2191 | * @devp : pointer to our soft state | |
1da177e4 LT |
2192 | * |
2193 | * Interrupt service routine for memory-mapped mailbox controllers. | |
2194 | */ | |
2195 | static irqreturn_t | |
7d12e780 | 2196 | megaraid_isr(int irq, void *devp) |
1da177e4 LT |
2197 | { |
2198 | adapter_t *adapter = devp; | |
2199 | int handled; | |
2200 | ||
2201 | handled = megaraid_ack_sequence(adapter); | |
2202 | ||
2203 | /* Loop through any pending requests */ | |
2204 | if (!adapter->quiescent) { | |
2205 | megaraid_mbox_runpendq(adapter, NULL); | |
2206 | } | |
2207 | ||
2208 | return IRQ_RETVAL(handled); | |
2209 | } | |
2210 | ||
2211 | ||
2212 | /** | |
2213 | * megaraid_mbox_sync_scb - sync kernel buffers | |
2214 | * @adapter : controller's soft state | |
2215 | * @scb : pointer to the resource packet | |
2216 | * | |
2217 | * DMA sync if required. | |
2218 | */ | |
858119e1 | 2219 | static void |
1da177e4 LT |
2220 | megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb) |
2221 | { | |
2222 | mbox_ccb_t *ccb; | |
2223 | ||
2224 | ccb = (mbox_ccb_t *)scb->ccb; | |
2225 | ||
32fbac22 FT |
2226 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) |
2227 | pci_dma_sync_sg_for_cpu(adapter->pdev, | |
2228 | scsi_sglist(scb->scp), | |
2229 | scsi_sg_count(scb->scp), | |
1da177e4 | 2230 | PCI_DMA_FROMDEVICE); |
1da177e4 | 2231 | |
32fbac22 | 2232 | scsi_dma_unmap(scb->scp); |
1da177e4 LT |
2233 | return; |
2234 | } | |
2235 | ||
2236 | ||
2237 | /** | |
2238 | * megaraid_mbox_dpc - the tasklet to complete the commands from completed list | |
2239 | * @devp : pointer to HBA soft state | |
2240 | * | |
2241 | * Pick up the commands from the completed list and send back to the owners. | |
2242 | * This is a reentrant function and does not assume any locks are held while | |
2243 | * it is being called. | |
2244 | */ | |
2245 | static void | |
2246 | megaraid_mbox_dpc(unsigned long devp) | |
2247 | { | |
2248 | adapter_t *adapter = (adapter_t *)devp; | |
2249 | mraid_device_t *raid_dev; | |
2250 | struct list_head clist; | |
2251 | struct scatterlist *sgl; | |
2252 | scb_t *scb; | |
2253 | scb_t *tmp; | |
2254 | struct scsi_cmnd *scp; | |
2255 | mraid_passthru_t *pthru; | |
2256 | mraid_epassthru_t *epthru; | |
2257 | mbox_ccb_t *ccb; | |
2258 | int islogical; | |
2259 | int pdev_index; | |
2260 | int pdev_state; | |
2261 | mbox_t *mbox; | |
2262 | unsigned long flags; | |
2263 | uint8_t c; | |
2264 | int status; | |
c005fb4f | 2265 | uioc_t *kioc; |
1da177e4 LT |
2266 | |
2267 | ||
2268 | if (!adapter) return; | |
2269 | ||
2270 | raid_dev = ADAP2RAIDDEV(adapter); | |
2271 | ||
2272 | // move the SCBs from the completed list to our local list | |
2273 | INIT_LIST_HEAD(&clist); | |
2274 | ||
2275 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2276 | ||
2277 | list_splice_init(&adapter->completed_list, &clist); | |
2278 | ||
2279 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2280 | ||
2281 | ||
2282 | list_for_each_entry_safe(scb, tmp, &clist, list) { | |
2283 | ||
2284 | status = scb->status; | |
2285 | scp = scb->scp; | |
2286 | ccb = (mbox_ccb_t *)scb->ccb; | |
2287 | pthru = ccb->pthru; | |
2288 | epthru = ccb->epthru; | |
2289 | mbox = ccb->mbox; | |
2290 | ||
2291 | // Make sure f/w has completed a valid command | |
2292 | if (scb->state != SCB_ISSUED) { | |
2293 | con_log(CL_ANN, (KERN_CRIT | |
2294 | "megaraid critical err: invalid command %d:%d:%p\n", | |
2295 | scb->sno, scb->state, scp)); | |
2296 | BUG(); | |
2297 | continue; // Must never happen! | |
2298 | } | |
2299 | ||
2300 | // check for the management command and complete it right away | |
2301 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { | |
2302 | scb->state = SCB_FREE; | |
2303 | scb->status = status; | |
2304 | ||
2305 | // remove from local clist | |
2306 | list_del_init(&scb->list); | |
2307 | ||
c005fb4f JS |
2308 | kioc = (uioc_t *)scb->gp; |
2309 | kioc->status = 0; | |
2310 | ||
1da177e4 LT |
2311 | megaraid_mbox_mm_done(adapter, scb); |
2312 | ||
2313 | continue; | |
2314 | } | |
2315 | ||
2316 | // Was an abort issued for this command earlier | |
2317 | if (scb->state & SCB_ABORT) { | |
2318 | con_log(CL_ANN, (KERN_NOTICE | |
5cd049a5 CH |
2319 | "megaraid: aborted cmd [%x] completed\n", |
2320 | scb->sno)); | |
1da177e4 LT |
2321 | } |
2322 | ||
2323 | /* | |
2324 | * If the inquiry came of a disk drive which is not part of | |
2325 | * any RAID array, expose it to the kernel. For this to be | |
2326 | * enabled, user must set the "megaraid_expose_unconf_disks" | |
2327 | * flag to 1 by specifying it on module parameter list. | |
2328 | * This would enable data migration off drives from other | |
2329 | * configurations. | |
2330 | */ | |
2331 | islogical = MRAID_IS_LOGICAL(adapter, scp); | |
2332 | if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 | |
2333 | && IS_RAID_CH(raid_dev, scb->dev_channel)) { | |
2334 | ||
32fbac22 | 2335 | sgl = scsi_sglist(scp); |
45711f1a JA |
2336 | if (sg_page(sgl)) { |
2337 | c = *(unsigned char *) sg_virt(&sgl[0]); | |
32fbac22 FT |
2338 | } else { |
2339 | con_log(CL_ANN, (KERN_WARNING | |
2340 | "megaraid mailbox: invalid sg:%d\n", | |
2341 | __LINE__)); | |
2342 | c = 0; | |
1da177e4 LT |
2343 | } |
2344 | ||
2345 | if ((c & 0x1F ) == TYPE_DISK) { | |
2346 | pdev_index = (scb->dev_channel * 16) + | |
2347 | scb->dev_target; | |
2348 | pdev_state = | |
2349 | raid_dev->pdrv_state[pdev_index] & 0x0F; | |
2350 | ||
2351 | if (pdev_state == PDRV_ONLINE || | |
2352 | pdev_state == PDRV_FAILED || | |
2353 | pdev_state == PDRV_RBLD || | |
2354 | pdev_state == PDRV_HOTSPARE || | |
2355 | megaraid_expose_unconf_disks == 0) { | |
2356 | ||
2357 | status = 0xF0; | |
2358 | } | |
2359 | } | |
2360 | } | |
2361 | ||
2362 | // Convert MegaRAID status to Linux error code | |
2363 | switch (status) { | |
2364 | ||
2365 | case 0x00: | |
2366 | ||
2367 | scp->result = (DID_OK << 16); | |
2368 | break; | |
2369 | ||
2370 | case 0x02: | |
2371 | ||
2372 | /* set sense_buffer and result fields */ | |
2373 | if (mbox->cmd == MBOXCMD_PASSTHRU || | |
2374 | mbox->cmd == MBOXCMD_PASSTHRU64) { | |
2375 | ||
2376 | memcpy(scp->sense_buffer, pthru->reqsensearea, | |
2377 | 14); | |
2378 | ||
2379 | scp->result = DRIVER_SENSE << 24 | | |
2380 | DID_OK << 16 | CHECK_CONDITION << 1; | |
2381 | } | |
2382 | else { | |
2383 | if (mbox->cmd == MBOXCMD_EXTPTHRU) { | |
2384 | ||
2385 | memcpy(scp->sense_buffer, | |
2386 | epthru->reqsensearea, 14); | |
2387 | ||
2388 | scp->result = DRIVER_SENSE << 24 | | |
2389 | DID_OK << 16 | | |
2390 | CHECK_CONDITION << 1; | |
2391 | } else { | |
2392 | scp->sense_buffer[0] = 0x70; | |
2393 | scp->sense_buffer[2] = ABORTED_COMMAND; | |
2394 | scp->result = CHECK_CONDITION << 1; | |
2395 | } | |
2396 | } | |
2397 | break; | |
2398 | ||
2399 | case 0x08: | |
2400 | ||
2401 | scp->result = DID_BUS_BUSY << 16 | status; | |
2402 | break; | |
2403 | ||
2404 | default: | |
2405 | ||
2406 | /* | |
2407 | * If TEST_UNIT_READY fails, we know RESERVATION_STATUS | |
2408 | * failed | |
2409 | */ | |
2410 | if (scp->cmnd[0] == TEST_UNIT_READY) { | |
2411 | scp->result = DID_ERROR << 16 | | |
2412 | RESERVATION_CONFLICT << 1; | |
2413 | } | |
2414 | else | |
2415 | /* | |
2416 | * Error code returned is 1 if Reserve or Release | |
2417 | * failed or the input parameter is invalid | |
2418 | */ | |
2419 | if (status == 1 && (scp->cmnd[0] == RESERVE || | |
2420 | scp->cmnd[0] == RELEASE)) { | |
2421 | ||
2422 | scp->result = DID_ERROR << 16 | | |
2423 | RESERVATION_CONFLICT << 1; | |
2424 | } | |
2425 | else { | |
2426 | scp->result = DID_BAD_TARGET << 16 | status; | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | // print a debug message for all failed commands | |
2431 | if (status) { | |
2432 | megaraid_mbox_display_scb(adapter, scb); | |
2433 | } | |
2434 | ||
2435 | // Free our internal resources and call the mid-layer callback | |
2436 | // routine | |
2437 | megaraid_mbox_sync_scb(adapter, scb); | |
2438 | ||
2439 | // remove from local clist | |
2440 | list_del_init(&scb->list); | |
2441 | ||
2442 | // put back in free list | |
2443 | megaraid_dealloc_scb(adapter, scb); | |
2444 | ||
2445 | // send the scsi packet back to kernel | |
1da177e4 | 2446 | scp->scsi_done(scp); |
1da177e4 LT |
2447 | } |
2448 | ||
2449 | return; | |
2450 | } | |
2451 | ||
2452 | ||
2453 | /** | |
2454 | * megaraid_abort_handler - abort the scsi command | |
2455 | * @scp : command to be aborted | |
2456 | * | |
2457 | * Abort a previous SCSI request. Only commands on the pending list can be | |
2458 | * aborted. All the commands issued to the F/W must complete. | |
2459 | **/ | |
2460 | static int | |
f2c8dc40 | 2461 | megaraid_abort_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2462 | { |
2463 | adapter_t *adapter; | |
2464 | mraid_device_t *raid_dev; | |
2465 | scb_t *scb; | |
2466 | scb_t *tmp; | |
2467 | int found; | |
2468 | unsigned long flags; | |
2469 | int i; | |
2470 | ||
2471 | ||
2472 | adapter = SCP2ADAPTER(scp); | |
2473 | raid_dev = ADAP2RAIDDEV(adapter); | |
2474 | ||
1da177e4 | 2475 | con_log(CL_ANN, (KERN_WARNING |
5cd049a5 CH |
2476 | "megaraid: aborting cmd=%x <c=%d t=%d l=%d>\n", |
2477 | scp->cmnd[0], SCP2CHANNEL(scp), | |
1da177e4 LT |
2478 | SCP2TARGET(scp), SCP2LUN(scp))); |
2479 | ||
2480 | // If FW has stopped responding, simply return failure | |
2481 | if (raid_dev->hw_error) { | |
2482 | con_log(CL_ANN, (KERN_NOTICE | |
2483 | "megaraid: hw error, not aborting\n")); | |
2484 | return FAILED; | |
2485 | } | |
2486 | ||
2487 | // There might a race here, where the command was completed by the | |
2488 | // firmware and now it is on the completed list. Before we could | |
2489 | // complete the command to the kernel in dpc, the abort came. | |
2490 | // Find out if this is the case to avoid the race. | |
2491 | scb = NULL; | |
2492 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2493 | list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { | |
2494 | ||
2495 | if (scb->scp == scp) { // Found command | |
2496 | ||
2497 | list_del_init(&scb->list); // from completed list | |
2498 | ||
2499 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2500 | "megaraid: %d[%d:%d], abort from completed list\n", |
2501 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2502 | |
2503 | scp->result = (DID_ABORT << 16); | |
2504 | scp->scsi_done(scp); | |
2505 | ||
2506 | megaraid_dealloc_scb(adapter, scb); | |
2507 | ||
2508 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), | |
2509 | flags); | |
2510 | ||
2511 | return SUCCESS; | |
2512 | } | |
2513 | } | |
2514 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2515 | ||
2516 | ||
2517 | // Find out if this command is still on the pending list. If it is and | |
2518 | // was never issued, abort and return success. If the command is owned | |
2519 | // by the firmware, we must wait for it to complete by the FW. | |
2520 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2521 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
2522 | ||
2523 | if (scb->scp == scp) { // Found command | |
2524 | ||
2525 | list_del_init(&scb->list); // from pending list | |
2526 | ||
2527 | ASSERT(!(scb->state & SCB_ISSUED)); | |
2528 | ||
2529 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2530 | "megaraid abort: [%d:%d], driver owner\n", |
2531 | scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2532 | |
2533 | scp->result = (DID_ABORT << 16); | |
2534 | scp->scsi_done(scp); | |
2535 | ||
2536 | megaraid_dealloc_scb(adapter, scb); | |
2537 | ||
2538 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
2539 | flags); | |
2540 | ||
2541 | return SUCCESS; | |
2542 | } | |
2543 | } | |
2544 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2545 | ||
2546 | ||
2547 | // Check do we even own this command, in which case this would be | |
2548 | // owned by the firmware. The only way to locate the FW scb is to | |
2549 | // traverse through the list of all SCB, since driver does not | |
2550 | // maintain these SCBs on any list | |
2551 | found = 0; | |
f2c8dc40 | 2552 | spin_lock_irq(&adapter->lock); |
1da177e4 LT |
2553 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
2554 | scb = adapter->kscb_list + i; | |
2555 | ||
2556 | if (scb->scp == scp) { | |
2557 | ||
2558 | found = 1; | |
2559 | ||
2560 | if (!(scb->state & SCB_ISSUED)) { | |
2561 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2562 | "megaraid abort: %d[%d:%d], invalid state\n", |
2563 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2564 | BUG(); |
2565 | } | |
2566 | else { | |
2567 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2568 | "megaraid abort: %d[%d:%d], fw owner\n", |
2569 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2570 | } |
2571 | } | |
2572 | } | |
f2c8dc40 | 2573 | spin_unlock_irq(&adapter->lock); |
1da177e4 LT |
2574 | |
2575 | if (!found) { | |
5cd049a5 | 2576 | con_log(CL_ANN, (KERN_WARNING "megaraid abort: do now own\n")); |
1da177e4 LT |
2577 | |
2578 | // FIXME: Should there be a callback for this command? | |
2579 | return SUCCESS; | |
2580 | } | |
2581 | ||
2582 | // We cannot actually abort a command owned by firmware, return | |
2583 | // failure and wait for reset. In host reset handler, we will find out | |
2584 | // if the HBA is still live | |
2585 | return FAILED; | |
2586 | } | |
2587 | ||
1da177e4 LT |
2588 | /** |
2589 | * megaraid_reset_handler - device reset hadler for mailbox based driver | |
2590 | * @scp : reference command | |
2591 | * | |
2592 | * Reset handler for the mailbox based controller. First try to find out if | |
2593 | * the FW is still live, in which case the outstanding commands counter mut go | |
2594 | * down to 0. If that happens, also issue the reservation reset command to | |
2595 | * relinquish (possible) reservations on the logical drives connected to this | |
a69b74d3 | 2596 | * host. |
1da177e4 LT |
2597 | **/ |
2598 | static int | |
f2c8dc40 | 2599 | megaraid_reset_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2600 | { |
2601 | adapter_t *adapter; | |
2602 | scb_t *scb; | |
2603 | scb_t *tmp; | |
2604 | mraid_device_t *raid_dev; | |
2605 | unsigned long flags; | |
2606 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2607 | int rval; | |
2608 | int recovery_window; | |
2609 | int recovering; | |
2610 | int i; | |
c005fb4f | 2611 | uioc_t *kioc; |
1da177e4 LT |
2612 | |
2613 | adapter = SCP2ADAPTER(scp); | |
2614 | raid_dev = ADAP2RAIDDEV(adapter); | |
2615 | ||
1da177e4 LT |
2616 | // return failure if adapter is not responding |
2617 | if (raid_dev->hw_error) { | |
2618 | con_log(CL_ANN, (KERN_NOTICE | |
2619 | "megaraid: hw error, cannot reset\n")); | |
2620 | return FAILED; | |
2621 | } | |
2622 | ||
2623 | ||
2624 | // Under exceptional conditions, FW can take up to 3 minutes to | |
2625 | // complete command processing. Wait for additional 2 minutes for the | |
2626 | // pending commands counter to go down to 0. If it doesn't, let the | |
2627 | // controller be marked offline | |
2628 | // Also, reset all the commands currently owned by the driver | |
2629 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2630 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
1da177e4 LT |
2631 | list_del_init(&scb->list); // from pending list |
2632 | ||
c005fb4f JS |
2633 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
2634 | con_log(CL_ANN, (KERN_WARNING | |
2635 | "megaraid: IOCTL packet with %d[%d:%d] being reset\n", | |
2636 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 | 2637 | |
c005fb4f | 2638 | scb->status = -1; |
1da177e4 | 2639 | |
c005fb4f JS |
2640 | kioc = (uioc_t *)scb->gp; |
2641 | kioc->status = -EFAULT; | |
2642 | ||
2643 | megaraid_mbox_mm_done(adapter, scb); | |
2644 | } else { | |
2645 | if (scb->scp == scp) { // Found command | |
2646 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2647 | "megaraid: %d[%d:%d], reset from pending list\n", |
2648 | scb->sno, scb->dev_channel, scb->dev_target)); | |
c005fb4f JS |
2649 | } else { |
2650 | con_log(CL_ANN, (KERN_WARNING | |
2651 | "megaraid: IO packet with %d[%d:%d] being reset\n", | |
2652 | scb->sno, scb->dev_channel, scb->dev_target)); | |
2653 | } | |
2654 | ||
2655 | scb->scp->result = (DID_RESET << 16); | |
2656 | scb->scp->scsi_done(scb->scp); | |
2657 | ||
2658 | megaraid_dealloc_scb(adapter, scb); | |
2659 | } | |
1da177e4 LT |
2660 | } |
2661 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2662 | ||
2663 | if (adapter->outstanding_cmds) { | |
2664 | con_log(CL_ANN, (KERN_NOTICE | |
2665 | "megaraid: %d outstanding commands. Max wait %d sec\n", | |
c005fb4f JS |
2666 | adapter->outstanding_cmds, |
2667 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT))); | |
1da177e4 LT |
2668 | } |
2669 | ||
1da177e4 LT |
2670 | recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
2671 | ||
2672 | recovering = adapter->outstanding_cmds; | |
2673 | ||
c005fb4f | 2674 | for (i = 0; i < recovery_window; i++) { |
1da177e4 LT |
2675 | |
2676 | megaraid_ack_sequence(adapter); | |
2677 | ||
2678 | // print a message once every 5 seconds only | |
2679 | if (!(i % 5)) { | |
2680 | con_log(CL_ANN, ( | |
2681 | "megaraid mbox: Wait for %d commands to complete:%d\n", | |
2682 | adapter->outstanding_cmds, | |
c005fb4f | 2683 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); |
1da177e4 LT |
2684 | } |
2685 | ||
25985edc | 2686 | // bailout if no recovery happened in reset time |
c005fb4f | 2687 | if (adapter->outstanding_cmds == 0) { |
1da177e4 LT |
2688 | break; |
2689 | } | |
2690 | ||
2691 | msleep(1000); | |
2692 | } | |
2693 | ||
f2c8dc40 | 2694 | spin_lock(&adapter->lock); |
1da177e4 LT |
2695 | |
2696 | // If still outstanding commands, bail out | |
2697 | if (adapter->outstanding_cmds) { | |
2698 | con_log(CL_ANN, (KERN_WARNING | |
2699 | "megaraid mbox: critical hardware error!\n")); | |
2700 | ||
2701 | raid_dev->hw_error = 1; | |
2702 | ||
f2c8dc40 CH |
2703 | rval = FAILED; |
2704 | goto out; | |
1da177e4 LT |
2705 | } |
2706 | else { | |
2707 | con_log(CL_ANN, (KERN_NOTICE | |
af901ca1 | 2708 | "megaraid mbox: reset sequence completed successfully\n")); |
1da177e4 LT |
2709 | } |
2710 | ||
2711 | ||
2712 | // If the controller supports clustering, reset reservations | |
f2c8dc40 CH |
2713 | if (!adapter->ha) { |
2714 | rval = SUCCESS; | |
2715 | goto out; | |
2716 | } | |
1da177e4 LT |
2717 | |
2718 | // clear reservations if any | |
2719 | raw_mbox[0] = CLUSTER_CMD; | |
2720 | raw_mbox[2] = RESET_RESERVATIONS; | |
2721 | ||
2722 | rval = SUCCESS; | |
2723 | if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { | |
2724 | con_log(CL_ANN, | |
2725 | (KERN_INFO "megaraid: reservation reset\n")); | |
2726 | } | |
2727 | else { | |
2728 | rval = FAILED; | |
2729 | con_log(CL_ANN, (KERN_WARNING | |
2730 | "megaraid: reservation reset failed\n")); | |
2731 | } | |
2732 | ||
f2c8dc40 | 2733 | out: |
6548b0e5 | 2734 | spin_unlock(&adapter->lock); |
1da177e4 LT |
2735 | return rval; |
2736 | } | |
2737 | ||
1da177e4 LT |
2738 | /* |
2739 | * START: internal commands library | |
2740 | * | |
2741 | * This section of the driver has the common routine used by the driver and | |
2742 | * also has all the FW routines | |
2743 | */ | |
2744 | ||
2745 | /** | |
2746 | * mbox_post_sync_cmd() - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2747 | * @adapter : controller's soft state |
2748 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2749 | * |
2750 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
a69b74d3 | 2751 | * controllers. |
1da177e4 LT |
2752 | */ |
2753 | static int | |
2754 | mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) | |
2755 | { | |
2756 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2757 | mbox64_t *mbox64; | |
2758 | mbox_t *mbox; | |
2759 | uint8_t status; | |
2760 | int i; | |
2761 | ||
2762 | ||
2763 | mbox64 = raid_dev->mbox64; | |
2764 | mbox = raid_dev->mbox; | |
2765 | ||
2766 | /* | |
2767 | * Wait until mailbox is free | |
2768 | */ | |
2769 | if (megaraid_busywait_mbox(raid_dev) != 0) | |
2770 | goto blocked_mailbox; | |
2771 | ||
2772 | /* | |
2773 | * Copy mailbox data into host structure | |
2774 | */ | |
2775 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
2776 | mbox->cmdid = 0xFE; | |
2777 | mbox->busy = 1; | |
2778 | mbox->poll = 0; | |
2779 | mbox->ack = 0; | |
2780 | mbox->numstatus = 0xFF; | |
2781 | mbox->status = 0xFF; | |
2782 | ||
2783 | wmb(); | |
2784 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2785 | ||
2786 | // wait for maximum 1 second for status to post. If the status is not | |
2787 | // available within 1 second, assume FW is initializing and wait | |
2788 | // for an extended amount of time | |
2789 | if (mbox->numstatus == 0xFF) { // status not yet available | |
53b3531b | 2790 | udelay(25); |
1da177e4 LT |
2791 | |
2792 | for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { | |
2793 | rmb(); | |
2794 | msleep(1); | |
2795 | } | |
2796 | ||
2797 | ||
2798 | if (i == 1000) { | |
2799 | con_log(CL_ANN, (KERN_NOTICE | |
2800 | "megaraid mailbox: wait for FW to boot ")); | |
2801 | ||
2802 | for (i = 0; (mbox->numstatus == 0xFF) && | |
2803 | (i < MBOX_RESET_WAIT); i++) { | |
2804 | rmb(); | |
2805 | con_log(CL_ANN, ("\b\b\b\b\b[%03d]", | |
2806 | MBOX_RESET_WAIT - i)); | |
2807 | msleep(1000); | |
2808 | } | |
2809 | ||
2810 | if (i == MBOX_RESET_WAIT) { | |
2811 | ||
2812 | con_log(CL_ANN, ( | |
2813 | "\nmegaraid mailbox: status not available\n")); | |
2814 | ||
2815 | return -1; | |
2816 | } | |
2817 | con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); | |
2818 | } | |
2819 | } | |
2820 | ||
2821 | // wait for maximum 1 second for poll semaphore | |
2822 | if (mbox->poll != 0x77) { | |
2823 | udelay(25); | |
2824 | ||
2825 | for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { | |
2826 | rmb(); | |
2827 | msleep(1); | |
2828 | } | |
2829 | ||
2830 | if (i == 1000) { | |
2831 | con_log(CL_ANN, (KERN_WARNING | |
2832 | "megaraid mailbox: could not get poll semaphore\n")); | |
2833 | return -1; | |
2834 | } | |
2835 | } | |
2836 | ||
2837 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2838 | wmb(); | |
2839 | ||
2840 | // wait for maximum 1 second for acknowledgement | |
2841 | if (RDINDOOR(raid_dev) & 0x2) { | |
2842 | udelay(25); | |
2843 | ||
2844 | for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { | |
2845 | rmb(); | |
2846 | msleep(1); | |
2847 | } | |
2848 | ||
2849 | if (i == 1000) { | |
2850 | con_log(CL_ANN, (KERN_WARNING | |
2851 | "megaraid mailbox: could not acknowledge\n")); | |
2852 | return -1; | |
2853 | } | |
2854 | } | |
2855 | mbox->poll = 0; | |
2856 | mbox->ack = 0x77; | |
2857 | ||
2858 | status = mbox->status; | |
2859 | ||
2860 | // invalidate the completed command id array. After command | |
2861 | // completion, firmware would write the valid id. | |
2862 | mbox->numstatus = 0xFF; | |
2863 | mbox->status = 0xFF; | |
2864 | for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { | |
2865 | mbox->completed[i] = 0xFF; | |
2866 | } | |
2867 | ||
2868 | return status; | |
2869 | ||
2870 | blocked_mailbox: | |
2871 | ||
2872 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); | |
2873 | return -1; | |
2874 | } | |
2875 | ||
2876 | ||
2877 | /** | |
2878 | * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2879 | * @adapter : controller's soft state |
2880 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2881 | * |
2882 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
2883 | * controllers. This is a faster version of the synchronous command and | |
a69b74d3 | 2884 | * therefore can be called in interrupt-context as well. |
1da177e4 LT |
2885 | */ |
2886 | static int | |
2887 | mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) | |
2888 | { | |
2889 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2890 | mbox_t *mbox; | |
2891 | long i; | |
2892 | ||
2893 | ||
2894 | mbox = raid_dev->mbox; | |
2895 | ||
2896 | // return immediately if the mailbox is busy | |
2897 | if (mbox->busy) return -1; | |
2898 | ||
2899 | // Copy mailbox data into host structure | |
2900 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); | |
2901 | mbox->cmdid = 0xFE; | |
2902 | mbox->busy = 1; | |
2903 | mbox->poll = 0; | |
2904 | mbox->ack = 0; | |
2905 | mbox->numstatus = 0xFF; | |
2906 | mbox->status = 0xFF; | |
2907 | ||
2908 | wmb(); | |
2909 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2910 | ||
c005fb4f | 2911 | for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) { |
1da177e4 | 2912 | if (mbox->numstatus != 0xFF) break; |
ed7e8ef7 | 2913 | rmb(); |
c005fb4f | 2914 | udelay(MBOX_SYNC_DELAY_200); |
1da177e4 LT |
2915 | } |
2916 | ||
c005fb4f | 2917 | if (i == MBOX_SYNC_WAIT_CNT) { |
1da177e4 LT |
2918 | // We may need to re-calibrate the counter |
2919 | con_log(CL_ANN, (KERN_CRIT | |
2920 | "megaraid: fast sync command timed out\n")); | |
2921 | } | |
2922 | ||
2923 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2924 | wmb(); | |
2925 | ||
2926 | return mbox->status; | |
2927 | } | |
2928 | ||
2929 | ||
2930 | /** | |
2931 | * megaraid_busywait_mbox() - Wait until the controller's mailbox is available | |
a69b74d3 | 2932 | * @raid_dev : RAID device (HBA) soft state |
1da177e4 | 2933 | * |
a69b74d3 RD |
2934 | * Wait until the controller's mailbox is available to accept more commands. |
2935 | * Wait for at most 1 second. | |
1da177e4 LT |
2936 | */ |
2937 | static int | |
2938 | megaraid_busywait_mbox(mraid_device_t *raid_dev) | |
2939 | { | |
2940 | mbox_t *mbox = raid_dev->mbox; | |
2941 | int i = 0; | |
2942 | ||
2943 | if (mbox->busy) { | |
2944 | udelay(25); | |
2945 | for (i = 0; mbox->busy && i < 1000; i++) | |
2946 | msleep(1); | |
2947 | } | |
2948 | ||
2949 | if (i < 1000) return 0; | |
2950 | else return -1; | |
2951 | } | |
2952 | ||
2953 | ||
2954 | /** | |
2955 | * megaraid_mbox_product_info - some static information about the controller | |
a69b74d3 | 2956 | * @adapter : our soft state |
1da177e4 | 2957 | * |
a69b74d3 | 2958 | * Issue commands to the controller to grab some parameters required by our |
1da177e4 LT |
2959 | * caller. |
2960 | */ | |
2961 | static int | |
2962 | megaraid_mbox_product_info(adapter_t *adapter) | |
2963 | { | |
2964 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2965 | mbox_t *mbox; | |
2966 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2967 | mraid_pinfo_t *pinfo; | |
2968 | dma_addr_t pinfo_dma_h; | |
2969 | mraid_inquiry3_t *mraid_inq3; | |
2970 | int i; | |
2971 | ||
2972 | ||
2973 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
2974 | mbox = (mbox_t *)raw_mbox; | |
2975 | ||
2976 | /* | |
2977 | * Issue an ENQUIRY3 command to find out certain adapter parameters, | |
2978 | * e.g., max channels, max commands etc. | |
2979 | */ | |
2980 | pinfo = pci_alloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
2981 | &pinfo_dma_h); | |
2982 | ||
2983 | if (pinfo == NULL) { | |
2984 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 2985 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
2986 | __LINE__)); |
2987 | ||
2988 | return -1; | |
2989 | } | |
2990 | memset(pinfo, 0, sizeof(mraid_pinfo_t)); | |
2991 | ||
2992 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
2993 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
2994 | ||
2995 | raw_mbox[0] = FC_NEW_CONFIG; | |
2996 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; | |
2997 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; | |
2998 | ||
2999 | // Issue the command | |
3000 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3001 | ||
3002 | con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); | |
3003 | ||
3004 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3005 | pinfo, pinfo_dma_h); | |
3006 | ||
3007 | return -1; | |
3008 | } | |
3009 | ||
3010 | /* | |
3011 | * Collect information about state of each physical drive | |
3012 | * attached to the controller. We will expose all the disks | |
3013 | * which are not part of RAID | |
3014 | */ | |
3015 | mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; | |
3016 | for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { | |
3017 | raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; | |
3018 | } | |
3019 | ||
3020 | /* | |
3021 | * Get product info for information like number of channels, | |
3022 | * maximum commands supported. | |
3023 | */ | |
3024 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3025 | mbox->xferaddr = (uint32_t)pinfo_dma_h; | |
3026 | ||
3027 | raw_mbox[0] = FC_NEW_CONFIG; | |
3028 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; | |
3029 | ||
3030 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3031 | ||
3032 | con_log(CL_ANN, (KERN_WARNING | |
3033 | "megaraid: product info failed\n")); | |
3034 | ||
3035 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3036 | pinfo, pinfo_dma_h); | |
3037 | ||
3038 | return -1; | |
3039 | } | |
3040 | ||
3041 | /* | |
3042 | * Setup some parameters for host, as required by our caller | |
3043 | */ | |
3044 | adapter->max_channel = pinfo->nchannels; | |
3045 | ||
3046 | /* | |
3047 | * we will export all the logical drives on a single channel. | |
3048 | * Add 1 since inquires do not come for inititor ID | |
3049 | */ | |
3050 | adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; | |
3051 | adapter->max_lun = 8; // up to 8 LUNs for non-disk devices | |
3052 | ||
3053 | /* | |
3054 | * These are the maximum outstanding commands for the scsi-layer | |
3055 | */ | |
3056 | adapter->max_cmds = MBOX_MAX_SCSI_CMDS; | |
3057 | ||
3058 | memset(adapter->fw_version, 0, VERSION_SIZE); | |
3059 | memset(adapter->bios_version, 0, VERSION_SIZE); | |
3060 | ||
3061 | memcpy(adapter->fw_version, pinfo->fw_version, 4); | |
3062 | adapter->fw_version[4] = 0; | |
3063 | ||
3064 | memcpy(adapter->bios_version, pinfo->bios_version, 4); | |
3065 | adapter->bios_version[4] = 0; | |
3066 | ||
3067 | con_log(CL_ANN, (KERN_NOTICE | |
3068 | "megaraid: fw version:[%s] bios version:[%s]\n", | |
3069 | adapter->fw_version, adapter->bios_version)); | |
3070 | ||
3071 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo, | |
3072 | pinfo_dma_h); | |
3073 | ||
3074 | return 0; | |
3075 | } | |
3076 | ||
3077 | ||
3078 | ||
3079 | /** | |
3080 | * megaraid_mbox_extended_cdb - check for support for extended CDBs | |
a69b74d3 | 3081 | * @adapter : soft state for the controller |
1da177e4 | 3082 | * |
a69b74d3 RD |
3083 | * This routine check whether the controller in question supports extended |
3084 | * ( > 10 bytes ) CDBs. | |
1da177e4 LT |
3085 | */ |
3086 | static int | |
3087 | megaraid_mbox_extended_cdb(adapter_t *adapter) | |
3088 | { | |
3089 | mbox_t *mbox; | |
3090 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3091 | int rval; | |
3092 | ||
3093 | mbox = (mbox_t *)raw_mbox; | |
3094 | ||
3095 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3096 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3097 | ||
3098 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3099 | ||
3100 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3101 | raw_mbox[2] = SUPPORT_EXT_CDB; | |
3102 | ||
3103 | /* | |
3104 | * Issue the command | |
3105 | */ | |
3106 | rval = 0; | |
3107 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3108 | rval = -1; | |
3109 | } | |
3110 | ||
3111 | return rval; | |
3112 | } | |
3113 | ||
3114 | ||
3115 | /** | |
3116 | * megaraid_mbox_support_ha - Do we support clustering | |
a69b74d3 RD |
3117 | * @adapter : soft state for the controller |
3118 | * @init_id : ID of the initiator | |
1da177e4 LT |
3119 | * |
3120 | * Determine if the firmware supports clustering and the ID of the initiator. | |
3121 | */ | |
3122 | static int | |
3123 | megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) | |
3124 | { | |
3125 | mbox_t *mbox; | |
3126 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3127 | int rval; | |
3128 | ||
3129 | ||
3130 | mbox = (mbox_t *)raw_mbox; | |
3131 | ||
3132 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3133 | ||
3134 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3135 | ||
3136 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3137 | ||
3138 | raw_mbox[0] = GET_TARGET_ID; | |
3139 | ||
3140 | // Issue the command | |
3141 | *init_id = 7; | |
3142 | rval = -1; | |
3143 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3144 | ||
3145 | *init_id = *(uint8_t *)adapter->ibuf; | |
3146 | ||
3147 | con_log(CL_ANN, (KERN_INFO | |
3148 | "megaraid: cluster firmware, initiator ID: %d\n", | |
3149 | *init_id)); | |
3150 | ||
3151 | rval = 0; | |
3152 | } | |
3153 | ||
3154 | return rval; | |
3155 | } | |
3156 | ||
3157 | ||
3158 | /** | |
3159 | * megaraid_mbox_support_random_del - Do we support random deletion | |
a69b74d3 | 3160 | * @adapter : soft state for the controller |
1da177e4 | 3161 | * |
a69b74d3 | 3162 | * Determine if the firmware supports random deletion. |
1da177e4 LT |
3163 | * Return: 1 is operation supported, 0 otherwise |
3164 | */ | |
3165 | static int | |
3166 | megaraid_mbox_support_random_del(adapter_t *adapter) | |
3167 | { | |
3168 | mbox_t *mbox; | |
3169 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3170 | int rval; | |
3171 | ||
69cd39e9 HR |
3172 | /* |
3173 | * Newer firmware on Dell CERC expect a different | |
3174 | * random deletion handling, so disable it. | |
3175 | */ | |
3176 | if (adapter->pdev->vendor == PCI_VENDOR_ID_AMI && | |
3177 | adapter->pdev->device == PCI_DEVICE_ID_AMI_MEGARAID3 && | |
3178 | adapter->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL && | |
3179 | adapter->pdev->subsystem_device == PCI_SUBSYS_ID_CERC_ATA100_4CH && | |
3180 | (adapter->fw_version[0] > '6' || | |
3181 | (adapter->fw_version[0] == '6' && | |
3182 | adapter->fw_version[2] > '6') || | |
3183 | (adapter->fw_version[0] == '6' | |
3184 | && adapter->fw_version[2] == '6' | |
3185 | && adapter->fw_version[3] > '1'))) { | |
3186 | con_log(CL_DLEVEL1, ("megaraid: disable random deletion\n")); | |
3187 | return 0; | |
3188 | } | |
1da177e4 LT |
3189 | |
3190 | mbox = (mbox_t *)raw_mbox; | |
3191 | ||
3192 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3193 | ||
3194 | raw_mbox[0] = FC_DEL_LOGDRV; | |
3195 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; | |
3196 | ||
3197 | // Issue the command | |
3198 | rval = 0; | |
3199 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3200 | ||
3201 | con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); | |
3202 | ||
3203 | rval = 1; | |
3204 | } | |
3205 | ||
3206 | return rval; | |
3207 | } | |
3208 | ||
3209 | ||
3210 | /** | |
3211 | * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware | |
a69b74d3 | 3212 | * @adapter : soft state for the controller |
1da177e4 LT |
3213 | * |
3214 | * Find out the maximum number of scatter-gather elements supported by the | |
a69b74d3 | 3215 | * firmware. |
1da177e4 LT |
3216 | */ |
3217 | static int | |
3218 | megaraid_mbox_get_max_sg(adapter_t *adapter) | |
3219 | { | |
3220 | mbox_t *mbox; | |
3221 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3222 | int nsg; | |
3223 | ||
3224 | ||
3225 | mbox = (mbox_t *)raw_mbox; | |
3226 | ||
3227 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3228 | ||
3229 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3230 | ||
3231 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3232 | ||
3233 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3234 | raw_mbox[2] = GET_MAX_SG_SUPPORT; | |
3235 | ||
3236 | // Issue the command | |
3237 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3238 | nsg = *(uint8_t *)adapter->ibuf; | |
3239 | } | |
3240 | else { | |
3241 | nsg = MBOX_DEFAULT_SG_SIZE; | |
3242 | } | |
3243 | ||
3244 | if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; | |
3245 | ||
3246 | return nsg; | |
3247 | } | |
3248 | ||
3249 | ||
3250 | /** | |
3251 | * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels | |
a69b74d3 | 3252 | * @adapter : soft state for the controller |
1da177e4 | 3253 | * |
a69b74d3 RD |
3254 | * Enumerate the RAID and SCSI channels for ROMB platforms so that channels |
3255 | * can be exported as regular SCSI channels. | |
1da177e4 LT |
3256 | */ |
3257 | static void | |
3258 | megaraid_mbox_enum_raid_scsi(adapter_t *adapter) | |
3259 | { | |
3260 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3261 | mbox_t *mbox; | |
3262 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3263 | ||
3264 | ||
3265 | mbox = (mbox_t *)raw_mbox; | |
3266 | ||
3267 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3268 | ||
3269 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3270 | ||
3271 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3272 | ||
3273 | raw_mbox[0] = CHNL_CLASS; | |
3274 | raw_mbox[2] = GET_CHNL_CLASS; | |
3275 | ||
3276 | // Issue the command. If the command fails, all channels are RAID | |
3277 | // channels | |
3278 | raid_dev->channel_class = 0xFF; | |
3279 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3280 | raid_dev->channel_class = *(uint8_t *)adapter->ibuf; | |
3281 | } | |
3282 | ||
3283 | return; | |
3284 | } | |
3285 | ||
3286 | ||
3287 | /** | |
3288 | * megaraid_mbox_flush_cache - flush adapter and disks cache | |
a69b74d3 | 3289 | * @adapter : soft state for the controller |
1da177e4 | 3290 | * |
a69b74d3 | 3291 | * Flush adapter cache followed by disks cache. |
1da177e4 LT |
3292 | */ |
3293 | static void | |
3294 | megaraid_mbox_flush_cache(adapter_t *adapter) | |
3295 | { | |
3296 | mbox_t *mbox; | |
3297 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3298 | ||
3299 | ||
3300 | mbox = (mbox_t *)raw_mbox; | |
3301 | ||
3302 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3303 | ||
3304 | raw_mbox[0] = FLUSH_ADAPTER; | |
3305 | ||
3306 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3307 | con_log(CL_ANN, ("megaraid: flush adapter failed\n")); | |
3308 | } | |
3309 | ||
3310 | raw_mbox[0] = FLUSH_SYSTEM; | |
3311 | ||
3312 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3313 | con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); | |
3314 | } | |
3315 | ||
3316 | return; | |
3317 | } | |
3318 | ||
3319 | ||
cd96d96f SP |
3320 | /** |
3321 | * megaraid_mbox_fire_sync_cmd - fire the sync cmd | |
a69b74d3 | 3322 | * @adapter : soft state for the controller |
cd96d96f | 3323 | * |
a69b74d3 | 3324 | * Clears the pending cmds in FW and reinits its RAID structs. |
cd96d96f SP |
3325 | */ |
3326 | static int | |
3327 | megaraid_mbox_fire_sync_cmd(adapter_t *adapter) | |
3328 | { | |
3329 | mbox_t *mbox; | |
3330 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3331 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3332 | mbox64_t *mbox64; | |
3333 | int status = 0; | |
3334 | int i; | |
3335 | uint32_t dword; | |
3336 | ||
3337 | mbox = (mbox_t *)raw_mbox; | |
3338 | ||
3339 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3340 | ||
3341 | raw_mbox[0] = 0xFF; | |
3342 | ||
3343 | mbox64 = raid_dev->mbox64; | |
3344 | mbox = raid_dev->mbox; | |
3345 | ||
3346 | /* Wait until mailbox is free */ | |
3347 | if (megaraid_busywait_mbox(raid_dev) != 0) { | |
3348 | status = 1; | |
3349 | goto blocked_mailbox; | |
3350 | } | |
3351 | ||
3352 | /* Copy mailbox data into host structure */ | |
3353 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
3354 | mbox->cmdid = 0xFE; | |
3355 | mbox->busy = 1; | |
3356 | mbox->poll = 0; | |
3357 | mbox->ack = 0; | |
3358 | mbox->numstatus = 0; | |
3359 | mbox->status = 0; | |
3360 | ||
3361 | wmb(); | |
3362 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
3363 | ||
3364 | /* Wait for maximum 1 min for status to post. | |
3365 | * If the Firmware SUPPORTS the ABOVE COMMAND, | |
3366 | * mbox->cmd will be set to 0 | |
3367 | * else | |
3368 | * the firmware will reject the command with | |
3369 | * mbox->numstatus set to 1 | |
3370 | */ | |
3371 | ||
3372 | i = 0; | |
3373 | status = 0; | |
3374 | while (!mbox->numstatus && mbox->cmd == 0xFF) { | |
3375 | rmb(); | |
3376 | msleep(1); | |
3377 | i++; | |
3378 | if (i > 1000 * 60) { | |
3379 | status = 1; | |
3380 | break; | |
3381 | } | |
3382 | } | |
3383 | if (mbox->numstatus == 1) | |
3384 | status = 1; /*cmd not supported*/ | |
3385 | ||
3386 | /* Check for interrupt line */ | |
3387 | dword = RDOUTDOOR(raid_dev); | |
3388 | WROUTDOOR(raid_dev, dword); | |
3389 | WRINDOOR(raid_dev,2); | |
3390 | ||
3391 | return status; | |
3392 | ||
3393 | blocked_mailbox: | |
3394 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n")); | |
3395 | return status; | |
3396 | } | |
3397 | ||
1da177e4 LT |
3398 | /** |
3399 | * megaraid_mbox_display_scb - display SCB information, mostly debug purposes | |
a69b74d3 RD |
3400 | * @adapter : controller's soft state |
3401 | * @scb : SCB to be displayed | |
3402 | * @level : debug level for console print | |
1da177e4 LT |
3403 | * |
3404 | * Diplay information about the given SCB iff the current debug level is | |
a69b74d3 | 3405 | * verbose. |
1da177e4 LT |
3406 | */ |
3407 | static void | |
3408 | megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) | |
3409 | { | |
3410 | mbox_ccb_t *ccb; | |
3411 | struct scsi_cmnd *scp; | |
3412 | mbox_t *mbox; | |
3413 | int level; | |
3414 | int i; | |
3415 | ||
3416 | ||
3417 | ccb = (mbox_ccb_t *)scb->ccb; | |
3418 | scp = scb->scp; | |
3419 | mbox = ccb->mbox; | |
3420 | ||
3421 | level = CL_DLEVEL3; | |
3422 | ||
3423 | con_log(level, (KERN_NOTICE | |
3424 | "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, | |
3425 | mbox->cmd, scb->sno)); | |
3426 | ||
3427 | con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", | |
3428 | mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, | |
3429 | mbox->numsge)); | |
3430 | ||
3431 | if (!scp) return; | |
3432 | ||
3433 | con_log(level, (KERN_NOTICE "scsi cmnd: ")); | |
3434 | ||
3435 | for (i = 0; i < scp->cmd_len; i++) { | |
3436 | con_log(level, ("%#2.02x ", scp->cmnd[i])); | |
3437 | } | |
3438 | ||
3439 | con_log(level, ("\n")); | |
3440 | ||
3441 | return; | |
3442 | } | |
3443 | ||
3444 | ||
3445 | /** | |
3446 | * megaraid_mbox_setup_device_map - manage device ids | |
3447 | * @adapter : Driver's soft state | |
3448 | * | |
25985edc | 3449 | * Manange the device ids to have an appropriate mapping between the kernel |
1da177e4 LT |
3450 | * scsi addresses and megaraid scsi and logical drive addresses. We export |
3451 | * scsi devices on their actual addresses, whereas the logical drives are | |
3452 | * exported on a virtual scsi channel. | |
a69b74d3 | 3453 | */ |
1da177e4 LT |
3454 | static void |
3455 | megaraid_mbox_setup_device_map(adapter_t *adapter) | |
3456 | { | |
3457 | uint8_t c; | |
3458 | uint8_t t; | |
3459 | ||
3460 | /* | |
3461 | * First fill the values on the logical drive channel | |
3462 | */ | |
3463 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3464 | adapter->device_ids[adapter->max_channel][t] = | |
3465 | (t < adapter->init_id) ? t : t - 1; | |
3466 | ||
3467 | adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; | |
3468 | ||
3469 | /* | |
3470 | * Fill the values on the physical devices channels | |
3471 | */ | |
3472 | for (c = 0; c < adapter->max_channel; c++) | |
3473 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3474 | adapter->device_ids[c][t] = (c << 8) | t; | |
3475 | } | |
3476 | ||
3477 | ||
3478 | /* | |
3479 | * END: internal commands library | |
3480 | */ | |
3481 | ||
3482 | /* | |
3483 | * START: Interface for the common management module | |
3484 | * | |
b1c11812 | 3485 | * This is the module, which interfaces with the common management module to |
1da177e4 LT |
3486 | * provide support for ioctl and sysfs |
3487 | */ | |
3488 | ||
3489 | /** | |
b1c11812 | 3490 | * megaraid_cmm_register - register with the management module |
a69b74d3 | 3491 | * @adapter : HBA soft state |
1da177e4 LT |
3492 | * |
3493 | * Register with the management module, which allows applications to issue | |
3494 | * ioctl calls to the drivers. This interface is used by the management module | |
3495 | * to setup sysfs support as well. | |
3496 | */ | |
3497 | static int | |
3498 | megaraid_cmm_register(adapter_t *adapter) | |
3499 | { | |
3500 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3501 | mraid_mmadp_t adp; | |
3502 | scb_t *scb; | |
3503 | mbox_ccb_t *ccb; | |
3504 | int rval; | |
3505 | int i; | |
3506 | ||
3507 | // Allocate memory for the base list of scb for management module. | |
dd00cc48 | 3508 | adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL); |
1da177e4 LT |
3509 | |
3510 | if (adapter->uscb_list == NULL) { | |
3511 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 3512 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
3513 | __LINE__)); |
3514 | return -1; | |
3515 | } | |
1da177e4 LT |
3516 | |
3517 | ||
3518 | // Initialize the synchronization parameters for resources for | |
3519 | // commands for management module | |
3520 | INIT_LIST_HEAD(&adapter->uscb_pool); | |
3521 | ||
3522 | spin_lock_init(USER_FREE_LIST_LOCK(adapter)); | |
3523 | ||
3524 | ||
3525 | ||
3526 | // link all the packets. Note, CCB for commands, coming from the | |
3527 | // commom management module, mailbox physical address are already | |
3528 | // setup by it. We just need placeholder for that in our local command | |
3529 | // control blocks | |
3530 | for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { | |
3531 | ||
3532 | scb = adapter->uscb_list + i; | |
3533 | ccb = raid_dev->uccb_list + i; | |
3534 | ||
3535 | scb->ccb = (caddr_t)ccb; | |
3536 | ccb->mbox64 = raid_dev->umbox64 + i; | |
3537 | ccb->mbox = &ccb->mbox64->mbox32; | |
3538 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
3539 | ||
3540 | scb->gp = 0; | |
3541 | ||
3542 | // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR | |
3543 | // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) | |
3544 | scb->sno = i + MBOX_MAX_SCSI_CMDS; | |
3545 | ||
3546 | scb->scp = NULL; | |
3547 | scb->state = SCB_FREE; | |
3548 | scb->dma_direction = PCI_DMA_NONE; | |
3549 | scb->dma_type = MRAID_DMA_NONE; | |
3550 | scb->dev_channel = -1; | |
3551 | scb->dev_target = -1; | |
3552 | ||
3553 | // put scb in the free pool | |
3554 | list_add_tail(&scb->list, &adapter->uscb_pool); | |
3555 | } | |
3556 | ||
3557 | adp.unique_id = adapter->unique_id; | |
3558 | adp.drvr_type = DRVRTYPE_MBOX; | |
3559 | adp.drvr_data = (unsigned long)adapter; | |
3560 | adp.pdev = adapter->pdev; | |
3561 | adp.issue_uioc = megaraid_mbox_mm_handler; | |
c005fb4f | 3562 | adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
1da177e4 LT |
3563 | adp.max_kioc = MBOX_MAX_USER_CMDS; |
3564 | ||
3565 | if ((rval = mraid_mm_register_adp(&adp)) != 0) { | |
3566 | ||
3567 | con_log(CL_ANN, (KERN_WARNING | |
3568 | "megaraid mbox: did not register with CMM\n")); | |
3569 | ||
3570 | kfree(adapter->uscb_list); | |
3571 | } | |
3572 | ||
3573 | return rval; | |
3574 | } | |
3575 | ||
3576 | ||
3577 | /** | |
b1c11812 | 3578 | * megaraid_cmm_unregister - un-register with the management module |
a69b74d3 | 3579 | * @adapter : HBA soft state |
1da177e4 LT |
3580 | * |
3581 | * Un-register with the management module. | |
3582 | * FIXME: mgmt module must return failure for unregister if it has pending | |
a69b74d3 | 3583 | * commands in LLD. |
1da177e4 LT |
3584 | */ |
3585 | static int | |
3586 | megaraid_cmm_unregister(adapter_t *adapter) | |
3587 | { | |
3588 | kfree(adapter->uscb_list); | |
3589 | mraid_mm_unregister_adp(adapter->unique_id); | |
3590 | return 0; | |
3591 | } | |
3592 | ||
3593 | ||
3594 | /** | |
3595 | * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD | |
a69b74d3 RD |
3596 | * @drvr_data : LLD specific data |
3597 | * @kioc : CMM interface packet | |
3598 | * @action : command action | |
1da177e4 | 3599 | * |
b1c11812 | 3600 | * This routine is invoked whenever the Common Management Module (CMM) has a |
1da177e4 LT |
3601 | * command for us. The 'action' parameter specifies if this is a new command |
3602 | * or otherwise. | |
3603 | */ | |
3604 | static int | |
3605 | megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) | |
3606 | { | |
3607 | adapter_t *adapter; | |
3608 | ||
3609 | if (action != IOCTL_ISSUE) { | |
3610 | con_log(CL_ANN, (KERN_WARNING | |
3611 | "megaraid: unsupported management action:%#2x\n", | |
3612 | action)); | |
3613 | return (-ENOTSUPP); | |
3614 | } | |
3615 | ||
3616 | adapter = (adapter_t *)drvr_data; | |
3617 | ||
3618 | // make sure this adapter is not being detached right now. | |
3619 | if (atomic_read(&adapter->being_detached)) { | |
3620 | con_log(CL_ANN, (KERN_WARNING | |
3621 | "megaraid: reject management request, detaching\n")); | |
3622 | return (-ENODEV); | |
3623 | } | |
3624 | ||
3625 | switch (kioc->opcode) { | |
3626 | ||
3627 | case GET_ADAP_INFO: | |
3628 | ||
3629 | kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) | |
3630 | (unsigned long)kioc->buf_vaddr); | |
3631 | ||
3632 | kioc->done(kioc); | |
3633 | ||
3634 | return kioc->status; | |
3635 | ||
3636 | case MBOX_CMD: | |
3637 | ||
3638 | return megaraid_mbox_mm_command(adapter, kioc); | |
3639 | ||
3640 | default: | |
3641 | kioc->status = (-EINVAL); | |
3642 | kioc->done(kioc); | |
3643 | return (-EINVAL); | |
3644 | } | |
3645 | ||
3646 | return 0; // not reached | |
3647 | } | |
3648 | ||
3649 | /** | |
3650 | * megaraid_mbox_mm_command - issues commands routed through CMM | |
a69b74d3 RD |
3651 | * @adapter : HBA soft state |
3652 | * @kioc : management command packet | |
1da177e4 LT |
3653 | * |
3654 | * Issues commands, which are routed through the management module. | |
3655 | */ | |
3656 | static int | |
3657 | megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) | |
3658 | { | |
3659 | struct list_head *head = &adapter->uscb_pool; | |
3660 | mbox64_t *mbox64; | |
3661 | uint8_t *raw_mbox; | |
3662 | scb_t *scb; | |
3663 | mbox_ccb_t *ccb; | |
3664 | unsigned long flags; | |
3665 | ||
3666 | // detach one scb from free pool | |
3667 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3668 | ||
3669 | if (list_empty(head)) { // should never happen because of CMM | |
3670 | ||
3671 | con_log(CL_ANN, (KERN_WARNING | |
3672 | "megaraid mbox: bug in cmm handler, lost resources\n")); | |
3673 | ||
3674 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3675 | ||
3676 | return (-EINVAL); | |
3677 | } | |
3678 | ||
3679 | scb = list_entry(head->next, scb_t, list); | |
3680 | list_del_init(&scb->list); | |
3681 | ||
3682 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3683 | ||
3684 | scb->state = SCB_ACTIVE; | |
3685 | scb->dma_type = MRAID_DMA_NONE; | |
3686 | scb->dma_direction = PCI_DMA_NONE; | |
3687 | ||
3688 | ccb = (mbox_ccb_t *)scb->ccb; | |
3689 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
3690 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3691 | ||
3692 | memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); | |
3693 | ||
3694 | scb->gp = (unsigned long)kioc; | |
3695 | ||
3696 | /* | |
3697 | * If it is a logdrv random delete operation, we have to wait till | |
3698 | * there are no outstanding cmds at the fw and then issue it directly | |
3699 | */ | |
3700 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3701 | ||
3702 | if (wait_till_fw_empty(adapter)) { | |
3703 | con_log(CL_ANN, (KERN_NOTICE | |
3704 | "megaraid mbox: LD delete, timed out\n")); | |
3705 | ||
3706 | kioc->status = -ETIME; | |
3707 | ||
3708 | scb->status = -1; | |
3709 | ||
3710 | megaraid_mbox_mm_done(adapter, scb); | |
3711 | ||
3712 | return (-ETIME); | |
3713 | } | |
3714 | ||
3715 | INIT_LIST_HEAD(&scb->list); | |
3716 | ||
3717 | scb->state = SCB_ISSUED; | |
3718 | if (mbox_post_cmd(adapter, scb) != 0) { | |
3719 | ||
3720 | con_log(CL_ANN, (KERN_NOTICE | |
3721 | "megaraid mbox: LD delete, mailbox busy\n")); | |
3722 | ||
3723 | kioc->status = -EBUSY; | |
3724 | ||
3725 | scb->status = -1; | |
3726 | ||
3727 | megaraid_mbox_mm_done(adapter, scb); | |
3728 | ||
3729 | return (-EBUSY); | |
3730 | } | |
3731 | ||
3732 | return 0; | |
3733 | } | |
3734 | ||
3735 | // put the command on the pending list and execute | |
3736 | megaraid_mbox_runpendq(adapter, scb); | |
3737 | ||
3738 | return 0; | |
3739 | } | |
3740 | ||
3741 | ||
3742 | static int | |
3743 | wait_till_fw_empty(adapter_t *adapter) | |
3744 | { | |
3745 | unsigned long flags = 0; | |
3746 | int i; | |
3747 | ||
3748 | ||
3749 | /* | |
3750 | * Set the quiescent flag to stop issuing cmds to FW. | |
3751 | */ | |
f2c8dc40 | 3752 | spin_lock_irqsave(&adapter->lock, flags); |
1da177e4 | 3753 | adapter->quiescent++; |
f2c8dc40 | 3754 | spin_unlock_irqrestore(&adapter->lock, flags); |
1da177e4 LT |
3755 | |
3756 | /* | |
3757 | * Wait till there are no more cmds outstanding at FW. Try for at most | |
3758 | * 60 seconds | |
3759 | */ | |
3760 | for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { | |
3761 | con_log(CL_DLEVEL1, (KERN_INFO | |
3762 | "megaraid: FW has %d pending commands\n", | |
3763 | adapter->outstanding_cmds)); | |
3764 | ||
3765 | msleep(1000); | |
3766 | } | |
3767 | ||
3768 | return adapter->outstanding_cmds; | |
3769 | } | |
3770 | ||
3771 | ||
3772 | /** | |
3773 | * megaraid_mbox_mm_done - callback for CMM commands | |
3774 | * @adapter : HBA soft state | |
3775 | * @scb : completed command | |
3776 | * | |
3777 | * Callback routine for internal commands originated from the management | |
3778 | * module. | |
3779 | */ | |
3780 | static void | |
3781 | megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) | |
3782 | { | |
3783 | uioc_t *kioc; | |
3784 | mbox64_t *mbox64; | |
3785 | uint8_t *raw_mbox; | |
3786 | unsigned long flags; | |
3787 | ||
3788 | kioc = (uioc_t *)scb->gp; | |
1da177e4 LT |
3789 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
3790 | mbox64->mbox32.status = scb->status; | |
3791 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3792 | ||
3793 | ||
3794 | // put scb in the free pool | |
3795 | scb->state = SCB_FREE; | |
3796 | scb->scp = NULL; | |
3797 | ||
3798 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3799 | ||
3800 | list_add(&scb->list, &adapter->uscb_pool); | |
3801 | ||
3802 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3803 | ||
3804 | // if a delete logical drive operation succeeded, restart the | |
3805 | // controller | |
3806 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3807 | ||
3808 | adapter->quiescent--; | |
3809 | ||
3810 | megaraid_mbox_runpendq(adapter, NULL); | |
3811 | } | |
3812 | ||
3813 | kioc->done(kioc); | |
3814 | ||
3815 | return; | |
3816 | } | |
3817 | ||
3818 | ||
3819 | /** | |
3820 | * gather_hbainfo - HBA characteristics for the applications | |
a69b74d3 RD |
3821 | * @adapter : HBA soft state |
3822 | * @hinfo : pointer to the caller's host info strucuture | |
1da177e4 LT |
3823 | */ |
3824 | static int | |
3825 | gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) | |
3826 | { | |
3827 | uint8_t dmajor; | |
3828 | ||
3829 | dmajor = megaraid_mbox_version[0]; | |
3830 | ||
3831 | hinfo->pci_vendor_id = adapter->pdev->vendor; | |
3832 | hinfo->pci_device_id = adapter->pdev->device; | |
3833 | hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; | |
3834 | hinfo->subsys_device_id = adapter->pdev->subsystem_device; | |
3835 | ||
3836 | hinfo->pci_bus = adapter->pdev->bus->number; | |
3837 | hinfo->pci_dev_fn = adapter->pdev->devfn; | |
3838 | hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); | |
3839 | hinfo->irq = adapter->host->irq; | |
3840 | hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; | |
3841 | ||
3842 | hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; | |
3843 | hinfo->host_no = adapter->host->host_no; | |
3844 | ||
3845 | return 0; | |
3846 | } | |
3847 | ||
3848 | /* | |
3849 | * END: Interface for the common management module | |
3850 | */ | |
3851 | ||
3852 | ||
3853 | ||
3854 | /** | |
3855 | * megaraid_sysfs_alloc_resources - allocate sysfs related resources | |
a69b74d3 | 3856 | * @adapter : controller's soft state |
1da177e4 LT |
3857 | * |
3858 | * Allocate packets required to issue FW calls whenever the sysfs attributes | |
3859 | * are read. These attributes would require up-to-date information from the | |
3860 | * FW. Also set up resources for mutual exclusion to share these resources and | |
3861 | * the wait queue. | |
3862 | * | |
a69b74d3 RD |
3863 | * Return 0 on success. |
3864 | * Return -ERROR_CODE on failure. | |
1da177e4 LT |
3865 | */ |
3866 | static int | |
3867 | megaraid_sysfs_alloc_resources(adapter_t *adapter) | |
3868 | { | |
3869 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3870 | int rval = 0; | |
3871 | ||
3872 | raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); | |
3873 | ||
3874 | raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); | |
3875 | ||
3876 | raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev, | |
3877 | PAGE_SIZE, &raid_dev->sysfs_buffer_dma); | |
3878 | ||
3879 | if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || | |
3880 | !raid_dev->sysfs_buffer) { | |
3881 | ||
3882 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 3883 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
3884 | __LINE__)); |
3885 | ||
3886 | rval = -ENOMEM; | |
3887 | ||
3888 | megaraid_sysfs_free_resources(adapter); | |
3889 | } | |
3890 | ||
0c2cc433 | 3891 | mutex_init(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3892 | |
3893 | init_waitqueue_head(&raid_dev->sysfs_wait_q); | |
3894 | ||
3895 | return rval; | |
3896 | } | |
3897 | ||
3898 | ||
3899 | /** | |
3900 | * megaraid_sysfs_free_resources - free sysfs related resources | |
a69b74d3 | 3901 | * @adapter : controller's soft state |
1da177e4 LT |
3902 | * |
3903 | * Free packets allocated for sysfs FW commands | |
1da177e4 LT |
3904 | */ |
3905 | static void | |
3906 | megaraid_sysfs_free_resources(adapter_t *adapter) | |
3907 | { | |
3908 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3909 | ||
c9475cb0 JJ |
3910 | kfree(raid_dev->sysfs_uioc); |
3911 | kfree(raid_dev->sysfs_mbox64); | |
1da177e4 LT |
3912 | |
3913 | if (raid_dev->sysfs_buffer) { | |
3914 | pci_free_consistent(adapter->pdev, PAGE_SIZE, | |
3915 | raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); | |
3916 | } | |
3917 | } | |
3918 | ||
3919 | ||
3920 | /** | |
3921 | * megaraid_sysfs_get_ldmap_done - callback for get ldmap | |
a69b74d3 | 3922 | * @uioc : completed packet |
1da177e4 LT |
3923 | * |
3924 | * Callback routine called in the ISR/tasklet context for get ldmap call | |
1da177e4 LT |
3925 | */ |
3926 | static void | |
3927 | megaraid_sysfs_get_ldmap_done(uioc_t *uioc) | |
3928 | { | |
3929 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
3930 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3931 | ||
3932 | uioc->status = 0; | |
3933 | ||
3934 | wake_up(&raid_dev->sysfs_wait_q); | |
3935 | } | |
3936 | ||
3937 | ||
3938 | /** | |
3939 | * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap | |
a69b74d3 | 3940 | * @data : timed out packet |
1da177e4 LT |
3941 | * |
3942 | * Timeout routine to recover and return to application, in case the adapter | |
a69b74d3 RD |
3943 | * has stopped responding. A timeout of 60 seconds for this command seems like |
3944 | * a good value. | |
1da177e4 LT |
3945 | */ |
3946 | static void | |
3947 | megaraid_sysfs_get_ldmap_timeout(unsigned long data) | |
3948 | { | |
3949 | uioc_t *uioc = (uioc_t *)data; | |
3950 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
3951 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3952 | ||
3953 | uioc->status = -ETIME; | |
3954 | ||
3955 | wake_up(&raid_dev->sysfs_wait_q); | |
3956 | } | |
3957 | ||
3958 | ||
3959 | /** | |
3960 | * megaraid_sysfs_get_ldmap - get update logical drive map | |
a69b74d3 | 3961 | * @adapter : controller's soft state |
1da177e4 LT |
3962 | * |
3963 | * This routine will be called whenever user reads the logical drive | |
3964 | * attributes, go get the current logical drive mapping table from the | |
b1c11812 | 3965 | * firmware. We use the management API's to issue commands to the controller. |
1da177e4 LT |
3966 | * |
3967 | * NOTE: The commands issuance functionality is not generalized and | |
3968 | * implemented in context of "get ld map" command only. If required, the | |
3969 | * command issuance logical can be trivially pulled out and implemented as a | |
25985edc | 3970 | * standalone library. For now, this should suffice since there is no other |
1da177e4 LT |
3971 | * user of this interface. |
3972 | * | |
a69b74d3 RD |
3973 | * Return 0 on success. |
3974 | * Return -1 on failure. | |
1da177e4 LT |
3975 | */ |
3976 | static int | |
3977 | megaraid_sysfs_get_ldmap(adapter_t *adapter) | |
3978 | { | |
3979 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3980 | uioc_t *uioc; | |
3981 | mbox64_t *mbox64; | |
3982 | mbox_t *mbox; | |
3983 | char *raw_mbox; | |
3984 | struct timer_list sysfs_timer; | |
3985 | struct timer_list *timerp; | |
3986 | caddr_t ldmap; | |
3987 | int rval = 0; | |
3988 | ||
3989 | /* | |
3990 | * Allow only one read at a time to go through the sysfs attributes | |
3991 | */ | |
0c2cc433 | 3992 | mutex_lock(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3993 | |
3994 | uioc = raid_dev->sysfs_uioc; | |
3995 | mbox64 = raid_dev->sysfs_mbox64; | |
3996 | ldmap = raid_dev->sysfs_buffer; | |
3997 | ||
3998 | memset(uioc, 0, sizeof(uioc_t)); | |
3999 | memset(mbox64, 0, sizeof(mbox64_t)); | |
4000 | memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); | |
4001 | ||
4002 | mbox = &mbox64->mbox32; | |
4003 | raw_mbox = (char *)mbox; | |
4004 | uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; | |
4005 | uioc->buf_vaddr = (caddr_t)adapter; | |
4006 | uioc->status = -ENODATA; | |
4007 | uioc->done = megaraid_sysfs_get_ldmap_done; | |
4008 | ||
4009 | /* | |
4010 | * Prepare the mailbox packet to get the current logical drive mapping | |
4011 | * table | |
4012 | */ | |
4013 | mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; | |
4014 | ||
4015 | raw_mbox[0] = FC_DEL_LOGDRV; | |
4016 | raw_mbox[2] = OP_GET_LDID_MAP; | |
4017 | ||
4018 | /* | |
4019 | * Setup a timer to recover from a non-responding controller | |
4020 | */ | |
4021 | timerp = &sysfs_timer; | |
4022 | init_timer(timerp); | |
4023 | ||
4024 | timerp->function = megaraid_sysfs_get_ldmap_timeout; | |
4025 | timerp->data = (unsigned long)uioc; | |
4026 | timerp->expires = jiffies + 60 * HZ; | |
4027 | ||
4028 | add_timer(timerp); | |
4029 | ||
4030 | /* | |
4031 | * Send the command to the firmware | |
4032 | */ | |
4033 | rval = megaraid_mbox_mm_command(adapter, uioc); | |
4034 | ||
4035 | if (rval == 0) { // command successfully issued | |
4036 | wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); | |
4037 | ||
4038 | /* | |
4039 | * Check if the command timed out | |
4040 | */ | |
4041 | if (uioc->status == -ETIME) { | |
4042 | con_log(CL_ANN, (KERN_NOTICE | |
4043 | "megaraid: sysfs get ld map timed out\n")); | |
4044 | ||
4045 | rval = -ETIME; | |
4046 | } | |
4047 | else { | |
4048 | rval = mbox->status; | |
4049 | } | |
4050 | ||
4051 | if (rval == 0) { | |
4052 | memcpy(raid_dev->curr_ldmap, ldmap, | |
4053 | sizeof(raid_dev->curr_ldmap)); | |
4054 | } | |
4055 | else { | |
4056 | con_log(CL_ANN, (KERN_NOTICE | |
4057 | "megaraid: get ld map failed with %x\n", rval)); | |
4058 | } | |
4059 | } | |
4060 | else { | |
4061 | con_log(CL_ANN, (KERN_NOTICE | |
4062 | "megaraid: could not issue ldmap command:%x\n", rval)); | |
4063 | } | |
4064 | ||
4065 | ||
4066 | del_timer_sync(timerp); | |
4067 | ||
0c2cc433 | 4068 | mutex_unlock(&raid_dev->sysfs_mtx); |
1da177e4 LT |
4069 | |
4070 | return rval; | |
4071 | } | |
4072 | ||
4073 | ||
4074 | /** | |
4075 | * megaraid_sysfs_show_app_hndl - display application handle for this adapter | |
a69b74d3 RD |
4076 | * @cdev : class device object representation for the host |
4077 | * @buf : buffer to send data to | |
1da177e4 LT |
4078 | * |
4079 | * Display the handle used by the applications while executing management | |
4080 | * tasks on the adapter. We invoke a management module API to get the adapter | |
4081 | * handle, since we do not interface with applications directly. | |
1da177e4 LT |
4082 | */ |
4083 | static ssize_t | |
ee959b00 TJ |
4084 | megaraid_sysfs_show_app_hndl(struct device *dev, struct device_attribute *attr, |
4085 | char *buf) | |
1da177e4 | 4086 | { |
ee959b00 | 4087 | struct Scsi_Host *shost = class_to_shost(dev); |
1da177e4 LT |
4088 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); |
4089 | uint32_t app_hndl; | |
4090 | ||
4091 | app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); | |
4092 | ||
4093 | return snprintf(buf, 8, "%u\n", app_hndl); | |
4094 | } | |
4095 | ||
4096 | ||
4097 | /** | |
4098 | * megaraid_sysfs_show_ldnum - display the logical drive number for this device | |
a69b74d3 RD |
4099 | * @dev : device object representation for the scsi device |
4100 | * @attr : device attribute to show | |
4101 | * @buf : buffer to send data to | |
1da177e4 LT |
4102 | * |
4103 | * Display the logical drive number for the device in question, if it a valid | |
a69b74d3 RD |
4104 | * logical drive. For physical devices, "-1" is returned. |
4105 | * | |
4106 | * The logical drive number is displayed in following format: | |
1da177e4 LT |
4107 | * |
4108 | * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> | |
1da177e4 | 4109 | * |
a69b74d3 | 4110 | * <int> <int> <int> <int> |
1da177e4 LT |
4111 | */ |
4112 | static ssize_t | |
10523b3b | 4113 | megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4114 | { |
4115 | struct scsi_device *sdev = to_scsi_device(dev); | |
4116 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); | |
4117 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4118 | int scsi_id = -1; | |
4119 | int logical_drv = -1; | |
4120 | int ldid_map = -1; | |
4121 | uint32_t app_hndl = 0; | |
4122 | int mapped_sdev_id; | |
4123 | int rval; | |
4124 | int i; | |
4125 | ||
4126 | if (raid_dev->random_del_supported && | |
4127 | MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { | |
4128 | ||
4129 | rval = megaraid_sysfs_get_ldmap(adapter); | |
4130 | if (rval == 0) { | |
4131 | ||
4132 | for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { | |
4133 | ||
4134 | mapped_sdev_id = sdev->id; | |
4135 | ||
4136 | if (sdev->id > adapter->init_id) { | |
4137 | mapped_sdev_id -= 1; | |
4138 | } | |
4139 | ||
4140 | if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { | |
4141 | ||
4142 | scsi_id = sdev->id; | |
4143 | ||
4144 | logical_drv = i; | |
4145 | ||
4146 | ldid_map = raid_dev->curr_ldmap[i]; | |
4147 | ||
4148 | app_hndl = mraid_mm_adapter_app_handle( | |
4149 | adapter->unique_id); | |
4150 | ||
4151 | break; | |
4152 | } | |
4153 | } | |
4154 | } | |
4155 | else { | |
4156 | con_log(CL_ANN, (KERN_NOTICE | |
4157 | "megaraid: sysfs get ld map failed: %x\n", | |
4158 | rval)); | |
4159 | } | |
4160 | } | |
4161 | ||
4162 | return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, | |
4163 | ldid_map, app_hndl); | |
4164 | } | |
4165 | ||
4166 | ||
4167 | /* | |
4168 | * END: Mailbox Low Level Driver | |
4169 | */ | |
4170 | module_init(megaraid_init); | |
4171 | module_exit(megaraid_exit); | |
4172 | ||
4173 | /* vim: set ts=8 sw=8 tw=78 ai si: */ |