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, | |
6f039790 | 308 | .remove = 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 | ||
1da177e4 LT |
335 | /* |
336 | * Scsi host template for megaraid unified driver | |
337 | */ | |
338 | static struct scsi_host_template megaraid_template_g = { | |
339 | .module = THIS_MODULE, | |
340 | .name = "LSI Logic MegaRAID driver", | |
341 | .proc_name = "megaraid", | |
342 | .queuecommand = megaraid_queue_command, | |
343 | .eh_abort_handler = megaraid_abort_handler, | |
344 | .eh_device_reset_handler = megaraid_reset_handler, | |
345 | .eh_bus_reset_handler = megaraid_reset_handler, | |
346 | .eh_host_reset_handler = megaraid_reset_handler, | |
db5ed4df | 347 | .change_queue_depth = scsi_change_queue_depth, |
1da177e4 | 348 | .use_clustering = ENABLE_CLUSTERING, |
54b2b50c | 349 | .no_write_same = 1, |
1da177e4 LT |
350 | .sdev_attrs = megaraid_sdev_attrs, |
351 | .shost_attrs = megaraid_shost_attrs, | |
352 | }; | |
353 | ||
354 | ||
355 | /** | |
356 | * megaraid_init - module load hook | |
357 | * | |
358 | * We register ourselves as hotplug enabled module and let PCI subsystem | |
a69b74d3 RD |
359 | * discover our adapters. |
360 | */ | |
1da177e4 LT |
361 | static int __init |
362 | megaraid_init(void) | |
363 | { | |
364 | int rval; | |
365 | ||
366 | // Announce the driver version | |
367 | con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION, | |
368 | MEGARAID_EXT_VERSION)); | |
369 | ||
370 | // check validity of module parameters | |
371 | if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) { | |
372 | ||
373 | con_log(CL_ANN, (KERN_WARNING | |
374 | "megaraid mailbox: max commands per lun reset to %d\n", | |
375 | MBOX_MAX_SCSI_CMDS)); | |
376 | ||
377 | megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS; | |
378 | } | |
379 | ||
380 | ||
381 | // register as a PCI hot-plug driver module | |
382db811 | 382 | rval = pci_register_driver(&megaraid_pci_driver); |
672b2d38 | 383 | if (rval < 0) { |
1da177e4 LT |
384 | con_log(CL_ANN, (KERN_WARNING |
385 | "megaraid: could not register hotplug support.\n")); | |
386 | } | |
387 | ||
388 | return rval; | |
389 | } | |
390 | ||
391 | ||
392 | /** | |
393 | * megaraid_exit - driver unload entry point | |
394 | * | |
a69b74d3 | 395 | * We simply unwrap the megaraid_init routine here. |
1da177e4 LT |
396 | */ |
397 | static void __exit | |
398 | megaraid_exit(void) | |
399 | { | |
400 | con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n")); | |
401 | ||
402 | // unregister as PCI hotplug driver | |
382db811 | 403 | pci_unregister_driver(&megaraid_pci_driver); |
1da177e4 LT |
404 | |
405 | return; | |
406 | } | |
407 | ||
408 | ||
409 | /** | |
410 | * megaraid_probe_one - PCI hotplug entry point | |
a69b74d3 RD |
411 | * @pdev : handle to this controller's PCI configuration space |
412 | * @id : pci device id of the class of controllers | |
1da177e4 LT |
413 | * |
414 | * This routine should be called whenever a new adapter is detected by the | |
3a4fa0a2 | 415 | * PCI hotplug susbsystem. |
a69b74d3 | 416 | */ |
6f039790 | 417 | static int |
1da177e4 LT |
418 | megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
419 | { | |
420 | adapter_t *adapter; | |
421 | ||
422 | ||
423 | // detected a new controller | |
424 | con_log(CL_ANN, (KERN_INFO | |
425 | "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", | |
426 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
427 | pdev->subsystem_device)); | |
428 | ||
429 | con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number, | |
430 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn))); | |
431 | ||
432 | if (pci_enable_device(pdev)) { | |
433 | con_log(CL_ANN, (KERN_WARNING | |
434 | "megaraid: pci_enable_device failed\n")); | |
435 | ||
436 | return -ENODEV; | |
437 | } | |
438 | ||
439 | // Enable bus-mastering on this controller | |
440 | pci_set_master(pdev); | |
441 | ||
442 | // Allocate the per driver initialization structure | |
dd00cc48 | 443 | adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL); |
1da177e4 LT |
444 | |
445 | if (adapter == NULL) { | |
446 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 447 | "megaraid: out of memory, %s %d.\n", __func__, __LINE__)); |
1da177e4 LT |
448 | |
449 | goto out_probe_one; | |
450 | } | |
1da177e4 LT |
451 | |
452 | ||
453 | // set up PCI related soft state and other pre-known parameters | |
454 | adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
455 | adapter->irq = pdev->irq; | |
456 | adapter->pdev = pdev; | |
457 | ||
458 | atomic_set(&adapter->being_detached, 0); | |
459 | ||
460 | // Setup the default DMA mask. This would be changed later on | |
461 | // depending on hardware capabilities | |
284901a9 | 462 | if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(32)) != 0) { |
1da177e4 LT |
463 | |
464 | con_log(CL_ANN, (KERN_WARNING | |
465 | "megaraid: pci_set_dma_mask failed:%d\n", __LINE__)); | |
466 | ||
467 | goto out_free_adapter; | |
468 | } | |
469 | ||
470 | ||
471 | // Initialize the synchronization lock for kernel and LLD | |
472 | spin_lock_init(&adapter->lock); | |
1da177e4 LT |
473 | |
474 | // Initialize the command queues: the list of free SCBs and the list | |
475 | // of pending SCBs. | |
476 | INIT_LIST_HEAD(&adapter->kscb_pool); | |
477 | spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); | |
478 | ||
479 | INIT_LIST_HEAD(&adapter->pend_list); | |
480 | spin_lock_init(PENDING_LIST_LOCK(adapter)); | |
481 | ||
482 | INIT_LIST_HEAD(&adapter->completed_list); | |
483 | spin_lock_init(COMPLETED_LIST_LOCK(adapter)); | |
484 | ||
485 | ||
486 | // Start the mailbox based controller | |
487 | if (megaraid_init_mbox(adapter) != 0) { | |
488 | con_log(CL_ANN, (KERN_WARNING | |
489 | "megaraid: maibox adapter did not initialize\n")); | |
490 | ||
491 | goto out_free_adapter; | |
492 | } | |
493 | ||
494 | // Register with LSI Common Management Module | |
495 | if (megaraid_cmm_register(adapter) != 0) { | |
496 | ||
497 | con_log(CL_ANN, (KERN_WARNING | |
498 | "megaraid: could not register with management module\n")); | |
499 | ||
500 | goto out_fini_mbox; | |
501 | } | |
502 | ||
503 | // setup adapter handle in PCI soft state | |
504 | pci_set_drvdata(pdev, adapter); | |
505 | ||
506 | // attach with scsi mid-layer | |
507 | if (megaraid_io_attach(adapter) != 0) { | |
508 | ||
509 | con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); | |
510 | ||
511 | goto out_cmm_unreg; | |
512 | } | |
513 | ||
514 | return 0; | |
515 | ||
516 | out_cmm_unreg: | |
1da177e4 LT |
517 | megaraid_cmm_unregister(adapter); |
518 | out_fini_mbox: | |
519 | megaraid_fini_mbox(adapter); | |
520 | out_free_adapter: | |
521 | kfree(adapter); | |
522 | out_probe_one: | |
523 | pci_disable_device(pdev); | |
524 | ||
525 | return -ENODEV; | |
526 | } | |
527 | ||
528 | ||
529 | /** | |
a69b74d3 | 530 | * megaraid_detach_one - release framework resources and call LLD release routine |
3948ff8b | 531 | * @pdev : handle for our PCI configuration space |
1da177e4 LT |
532 | * |
533 | * This routine is called during driver unload. We free all the allocated | |
534 | * resources and call the corresponding LLD so that it can also release all | |
535 | * its resources. | |
536 | * | |
a69b74d3 RD |
537 | * This routine is also called from the PCI hotplug system. |
538 | */ | |
1da177e4 LT |
539 | static void |
540 | megaraid_detach_one(struct pci_dev *pdev) | |
541 | { | |
542 | adapter_t *adapter; | |
543 | struct Scsi_Host *host; | |
544 | ||
545 | ||
546 | // Start a rollback on this adapter | |
547 | adapter = pci_get_drvdata(pdev); | |
548 | ||
549 | if (!adapter) { | |
550 | con_log(CL_ANN, (KERN_CRIT | |
551 | "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
552 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
553 | pdev->subsystem_device)); | |
554 | ||
555 | return; | |
556 | } | |
557 | else { | |
558 | con_log(CL_ANN, (KERN_NOTICE | |
559 | "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
560 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
561 | pdev->subsystem_device)); | |
562 | } | |
563 | ||
564 | ||
565 | host = adapter->host; | |
566 | ||
567 | // do not allow any more requests from the management module for this | |
568 | // adapter. | |
569 | // FIXME: How do we account for the request which might still be | |
570 | // pending with us? | |
571 | atomic_set(&adapter->being_detached, 1); | |
572 | ||
573 | // detach from the IO sub-system | |
574 | megaraid_io_detach(adapter); | |
575 | ||
1da177e4 LT |
576 | // Unregister from common management module |
577 | // | |
578 | // FIXME: this must return success or failure for conditions if there | |
579 | // is a command pending with LLD or not. | |
580 | megaraid_cmm_unregister(adapter); | |
581 | ||
582 | // finalize the mailbox based controller and release all resources | |
583 | megaraid_fini_mbox(adapter); | |
584 | ||
585 | kfree(adapter); | |
586 | ||
587 | scsi_host_put(host); | |
588 | ||
589 | pci_disable_device(pdev); | |
590 | ||
591 | return; | |
592 | } | |
593 | ||
594 | ||
595 | /** | |
596 | * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA | |
a69b74d3 | 597 | * @pdev : generic driver model device |
1da177e4 | 598 | * |
a69b74d3 | 599 | * Shutdown notification, perform flush cache. |
1da177e4 LT |
600 | */ |
601 | static void | |
5457b6a6 | 602 | megaraid_mbox_shutdown(struct pci_dev *pdev) |
1da177e4 | 603 | { |
5457b6a6 | 604 | adapter_t *adapter = pci_get_drvdata(pdev); |
1da177e4 LT |
605 | static int counter; |
606 | ||
607 | if (!adapter) { | |
608 | con_log(CL_ANN, (KERN_WARNING | |
609 | "megaraid: null device in shutdown\n")); | |
610 | return; | |
611 | } | |
612 | ||
613 | // flush caches now | |
614 | con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", | |
615 | counter++)); | |
616 | ||
617 | megaraid_mbox_flush_cache(adapter); | |
618 | ||
619 | con_log(CL_ANN, ("done\n")); | |
620 | } | |
621 | ||
622 | ||
623 | /** | |
624 | * megaraid_io_attach - attach a device with the IO subsystem | |
a69b74d3 | 625 | * @adapter : controller's soft state |
1da177e4 | 626 | * |
a69b74d3 RD |
627 | * Attach this device with the IO subsystem. |
628 | */ | |
1da177e4 LT |
629 | static int |
630 | megaraid_io_attach(adapter_t *adapter) | |
631 | { | |
632 | struct Scsi_Host *host; | |
633 | ||
634 | // Initialize SCSI Host structure | |
635 | host = scsi_host_alloc(&megaraid_template_g, 8); | |
636 | if (!host) { | |
637 | con_log(CL_ANN, (KERN_WARNING | |
638 | "megaraid mbox: scsi_register failed\n")); | |
639 | ||
640 | return -1; | |
641 | } | |
642 | ||
643 | SCSIHOST2ADAP(host) = (caddr_t)adapter; | |
644 | adapter->host = host; | |
645 | ||
1da177e4 LT |
646 | host->irq = adapter->irq; |
647 | host->unique_id = adapter->unique_id; | |
648 | host->can_queue = adapter->max_cmds; | |
649 | host->this_id = adapter->init_id; | |
650 | host->sg_tablesize = adapter->sglen; | |
651 | host->max_sectors = adapter->max_sectors; | |
652 | host->cmd_per_lun = adapter->cmd_per_lun; | |
653 | host->max_channel = adapter->max_channel; | |
654 | host->max_id = adapter->max_target; | |
655 | host->max_lun = adapter->max_lun; | |
656 | ||
657 | ||
658 | // notify mid-layer about the new controller | |
659 | if (scsi_add_host(host, &adapter->pdev->dev)) { | |
660 | ||
661 | con_log(CL_ANN, (KERN_WARNING | |
662 | "megaraid mbox: scsi_add_host failed\n")); | |
663 | ||
664 | scsi_host_put(host); | |
665 | ||
666 | return -1; | |
667 | } | |
668 | ||
669 | scsi_scan_host(host); | |
670 | ||
671 | return 0; | |
672 | } | |
673 | ||
674 | ||
675 | /** | |
676 | * megaraid_io_detach - detach a device from the IO subsystem | |
a69b74d3 | 677 | * @adapter : controller's soft state |
1da177e4 | 678 | * |
a69b74d3 RD |
679 | * Detach this device from the IO subsystem. |
680 | */ | |
1da177e4 LT |
681 | static void |
682 | megaraid_io_detach(adapter_t *adapter) | |
683 | { | |
684 | struct Scsi_Host *host; | |
685 | ||
686 | con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); | |
687 | ||
688 | host = adapter->host; | |
689 | ||
690 | scsi_remove_host(host); | |
691 | ||
692 | return; | |
693 | } | |
694 | ||
695 | ||
696 | /* | |
697 | * START: Mailbox Low Level Driver | |
698 | * | |
699 | * This is section specific to the single mailbox based controllers | |
700 | */ | |
701 | ||
702 | /** | |
703 | * megaraid_init_mbox - initialize controller | |
a69b74d3 | 704 | * @adapter : our soft state |
1da177e4 | 705 | * |
a69b74d3 RD |
706 | * - Allocate 16-byte aligned mailbox memory for firmware handshake |
707 | * - Allocate controller's memory resources | |
708 | * - Find out all initialization data | |
709 | * - Allocate memory required for all the commands | |
710 | * - Use internal library of FW routines, build up complete soft state | |
1da177e4 | 711 | */ |
6f039790 | 712 | static int |
1da177e4 LT |
713 | megaraid_init_mbox(adapter_t *adapter) |
714 | { | |
715 | struct pci_dev *pdev; | |
716 | mraid_device_t *raid_dev; | |
717 | int i; | |
fbf60802 | 718 | uint32_t magic64; |
1da177e4 LT |
719 | |
720 | ||
721 | adapter->ito = MBOX_TIMEOUT; | |
722 | pdev = adapter->pdev; | |
723 | ||
724 | /* | |
725 | * Allocate and initialize the init data structure for mailbox | |
726 | * controllers | |
727 | */ | |
dd00cc48 | 728 | raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL); |
1da177e4 LT |
729 | if (raid_dev == NULL) return -1; |
730 | ||
1da177e4 LT |
731 | |
732 | /* | |
733 | * Attach the adapter soft state to raid device soft state | |
734 | */ | |
735 | adapter->raid_device = (caddr_t)raid_dev; | |
736 | raid_dev->fast_load = megaraid_fast_load; | |
737 | ||
738 | ||
739 | // our baseport | |
740 | raid_dev->baseport = pci_resource_start(pdev, 0); | |
741 | ||
742 | if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { | |
743 | ||
744 | con_log(CL_ANN, (KERN_WARNING | |
745 | "megaraid: mem region busy\n")); | |
746 | ||
747 | goto out_free_raid_dev; | |
748 | } | |
749 | ||
750 | raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); | |
751 | ||
752 | if (!raid_dev->baseaddr) { | |
753 | ||
754 | con_log(CL_ANN, (KERN_WARNING | |
755 | "megaraid: could not map hba memory\n") ); | |
756 | ||
757 | goto out_release_regions; | |
758 | } | |
759 | ||
cd96d96f SP |
760 | /* initialize the mutual exclusion lock for the mailbox */ |
761 | spin_lock_init(&raid_dev->mailbox_lock); | |
762 | ||
763 | /* allocate memory required for commands */ | |
764 | if (megaraid_alloc_cmd_packets(adapter) != 0) | |
765 | goto out_iounmap; | |
1da177e4 | 766 | |
cd96d96f SP |
767 | /* |
768 | * Issue SYNC cmd to flush the pending cmds in the adapter | |
769 | * and initialize its internal state | |
770 | */ | |
771 | ||
772 | if (megaraid_mbox_fire_sync_cmd(adapter)) | |
773 | con_log(CL_ANN, ("megaraid: sync cmd failed\n")); | |
774 | ||
775 | /* | |
776 | * Setup the rest of the soft state using the library of | |
777 | * FW routines | |
778 | */ | |
779 | ||
780 | /* request IRQ and register the interrupt service routine */ | |
1d6f359a | 781 | if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid", |
1da177e4 LT |
782 | adapter)) { |
783 | ||
784 | con_log(CL_ANN, (KERN_WARNING | |
785 | "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); | |
cd96d96f | 786 | goto out_alloc_cmds; |
1da177e4 | 787 | |
1da177e4 LT |
788 | } |
789 | ||
790 | // Product info | |
cd96d96f SP |
791 | if (megaraid_mbox_product_info(adapter) != 0) |
792 | goto out_free_irq; | |
1da177e4 LT |
793 | |
794 | // Do we support extended CDBs | |
795 | adapter->max_cdb_sz = 10; | |
796 | if (megaraid_mbox_extended_cdb(adapter) == 0) { | |
797 | adapter->max_cdb_sz = 16; | |
798 | } | |
799 | ||
800 | /* | |
801 | * Do we support cluster environment, if we do, what is the initiator | |
802 | * id. | |
803 | * NOTE: In a non-cluster aware firmware environment, the LLD should | |
804 | * return 7 as initiator id. | |
805 | */ | |
806 | adapter->ha = 0; | |
807 | adapter->init_id = -1; | |
808 | if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { | |
809 | adapter->ha = 1; | |
810 | } | |
811 | ||
812 | /* | |
813 | * Prepare the device ids array to have the mapping between the kernel | |
814 | * device address and megaraid device address. | |
815 | * We export the physical devices on their actual addresses. The | |
816 | * logical drives are exported on a virtual SCSI channel | |
817 | */ | |
818 | megaraid_mbox_setup_device_map(adapter); | |
819 | ||
820 | // If the firmware supports random deletion, update the device id map | |
821 | if (megaraid_mbox_support_random_del(adapter)) { | |
822 | ||
823 | // Change the logical drives numbers in device_ids array one | |
824 | // slot in device_ids is reserved for target id, that's why | |
825 | // "<=" below | |
826 | for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { | |
827 | adapter->device_ids[adapter->max_channel][i] += 0x80; | |
828 | } | |
829 | adapter->device_ids[adapter->max_channel][adapter->init_id] = | |
830 | 0xFF; | |
831 | ||
832 | raid_dev->random_del_supported = 1; | |
833 | } | |
834 | ||
835 | /* | |
836 | * find out the maximum number of scatter-gather elements supported by | |
837 | * this firmware | |
838 | */ | |
839 | adapter->sglen = megaraid_mbox_get_max_sg(adapter); | |
840 | ||
841 | // enumerate RAID and SCSI channels so that all devices on SCSI | |
842 | // channels can later be exported, including disk devices | |
843 | megaraid_mbox_enum_raid_scsi(adapter); | |
844 | ||
845 | /* | |
846 | * Other parameters required by upper layer | |
847 | * | |
848 | * maximum number of sectors per IO command | |
849 | */ | |
850 | adapter->max_sectors = megaraid_max_sectors; | |
851 | ||
852 | /* | |
853 | * number of queued commands per LUN. | |
854 | */ | |
855 | adapter->cmd_per_lun = megaraid_cmd_per_lun; | |
856 | ||
857 | /* | |
858 | * Allocate resources required to issue FW calls, when sysfs is | |
859 | * accessed | |
860 | */ | |
cd96d96f SP |
861 | if (megaraid_sysfs_alloc_resources(adapter) != 0) |
862 | goto out_free_irq; | |
1da177e4 LT |
863 | |
864 | // Set the DMA mask to 64-bit. All supported controllers as capable of | |
865 | // DMA in this range | |
fbf60802 JS |
866 | pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64); |
867 | ||
868 | if (((magic64 == HBA_SIGNATURE_64_BIT) && | |
869 | ((adapter->pdev->subsystem_device != | |
8741ca71 | 870 | PCI_SUBSYS_ID_MEGARAID_SATA_150_6) && |
fbf60802 JS |
871 | (adapter->pdev->subsystem_device != |
872 | PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) || | |
873 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
874 | adapter->pdev->device == PCI_DEVICE_ID_VERDE) || | |
875 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
876 | adapter->pdev->device == PCI_DEVICE_ID_DOBSON) || | |
877 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
878 | adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) || | |
879 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
880 | adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) || | |
881 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
882 | adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) { | |
6a35528a | 883 | if (pci_set_dma_mask(adapter->pdev, DMA_BIT_MASK(64))) { |
fbf60802 JS |
884 | con_log(CL_ANN, (KERN_WARNING |
885 | "megaraid: DMA mask for 64-bit failed\n")); | |
886 | ||
284901a9 | 887 | if (pci_set_dma_mask (adapter->pdev, DMA_BIT_MASK(32))) { |
fbf60802 JS |
888 | con_log(CL_ANN, (KERN_WARNING |
889 | "megaraid: 32-bit DMA mask failed\n")); | |
890 | goto out_free_sysfs_res; | |
891 | } | |
892 | } | |
1da177e4 LT |
893 | } |
894 | ||
895 | // setup tasklet for DPC | |
896 | tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, | |
897 | (unsigned long)adapter); | |
898 | ||
899 | con_log(CL_DLEVEL1, (KERN_INFO | |
900 | "megaraid mbox hba successfully initialized\n")); | |
901 | ||
902 | return 0; | |
903 | ||
904 | out_free_sysfs_res: | |
905 | megaraid_sysfs_free_resources(adapter); | |
1da177e4 LT |
906 | out_free_irq: |
907 | free_irq(adapter->irq, adapter); | |
cd96d96f SP |
908 | out_alloc_cmds: |
909 | megaraid_free_cmd_packets(adapter); | |
1da177e4 LT |
910 | out_iounmap: |
911 | iounmap(raid_dev->baseaddr); | |
912 | out_release_regions: | |
913 | pci_release_regions(pdev); | |
914 | out_free_raid_dev: | |
915 | kfree(raid_dev); | |
916 | ||
917 | return -1; | |
918 | } | |
919 | ||
920 | ||
921 | /** | |
922 | * megaraid_fini_mbox - undo controller initialization | |
a69b74d3 | 923 | * @adapter : our soft state |
1da177e4 LT |
924 | */ |
925 | static void | |
926 | megaraid_fini_mbox(adapter_t *adapter) | |
927 | { | |
928 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
929 | ||
930 | // flush all caches | |
931 | megaraid_mbox_flush_cache(adapter); | |
932 | ||
933 | tasklet_kill(&adapter->dpc_h); | |
934 | ||
935 | megaraid_sysfs_free_resources(adapter); | |
936 | ||
937 | megaraid_free_cmd_packets(adapter); | |
938 | ||
939 | free_irq(adapter->irq, adapter); | |
940 | ||
941 | iounmap(raid_dev->baseaddr); | |
942 | ||
943 | pci_release_regions(adapter->pdev); | |
944 | ||
945 | kfree(raid_dev); | |
946 | ||
947 | return; | |
948 | } | |
949 | ||
950 | ||
951 | /** | |
952 | * megaraid_alloc_cmd_packets - allocate shared mailbox | |
a69b74d3 | 953 | * @adapter : soft state of the raid controller |
1da177e4 LT |
954 | * |
955 | * Allocate and align the shared mailbox. This maibox is used to issue | |
3948ff8b | 956 | * all the commands. For IO based controllers, the mailbox is also registered |
1da177e4 | 957 | * with the FW. Allocate memory for all commands as well. |
a69b74d3 | 958 | * This is our big allocator. |
1da177e4 LT |
959 | */ |
960 | static int | |
961 | megaraid_alloc_cmd_packets(adapter_t *adapter) | |
962 | { | |
963 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
964 | struct pci_dev *pdev; | |
965 | unsigned long align; | |
966 | scb_t *scb; | |
967 | mbox_ccb_t *ccb; | |
968 | struct mraid_pci_blk *epthru_pci_blk; | |
969 | struct mraid_pci_blk *sg_pci_blk; | |
970 | struct mraid_pci_blk *mbox_pci_blk; | |
971 | int i; | |
972 | ||
973 | pdev = adapter->pdev; | |
974 | ||
975 | /* | |
976 | * Setup the mailbox | |
977 | * Allocate the common 16-byte aligned memory for the handshake | |
978 | * mailbox. | |
979 | */ | |
7c845eb5 JP |
980 | raid_dev->una_mbox64 = pci_zalloc_consistent(adapter->pdev, |
981 | sizeof(mbox64_t), | |
982 | &raid_dev->una_mbox64_dma); | |
1da177e4 LT |
983 | |
984 | if (!raid_dev->una_mbox64) { | |
985 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 986 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
987 | __LINE__)); |
988 | return -1; | |
989 | } | |
1da177e4 LT |
990 | |
991 | /* | |
992 | * Align the mailbox at 16-byte boundary | |
993 | */ | |
994 | raid_dev->mbox = &raid_dev->una_mbox64->mbox32; | |
995 | ||
996 | raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & | |
997 | (~0UL ^ 0xFUL)); | |
998 | ||
999 | raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); | |
1000 | ||
1001 | align = ((void *)raid_dev->mbox - | |
1002 | ((void *)&raid_dev->una_mbox64->mbox32)); | |
1003 | ||
1004 | raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + | |
1005 | align; | |
1006 | ||
1007 | // Allocate memory for commands issued internally | |
7c845eb5 JP |
1008 | adapter->ibuf = pci_zalloc_consistent(pdev, MBOX_IBUF_SIZE, |
1009 | &adapter->ibuf_dma_h); | |
1da177e4 LT |
1010 | if (!adapter->ibuf) { |
1011 | ||
1012 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1013 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1014 | __LINE__)); |
1015 | ||
1016 | goto out_free_common_mbox; | |
1017 | } | |
1da177e4 LT |
1018 | |
1019 | // Allocate memory for our SCSI Command Blocks and their associated | |
1020 | // memory | |
1021 | ||
1022 | /* | |
1023 | * Allocate memory for the base list of scb. Later allocate memory for | |
1024 | * CCBs and embedded components of each CCB and point the pointers in | |
1025 | * scb to the allocated components | |
1026 | * NOTE: The code to allocate SCB will be duplicated in all the LLD | |
1027 | * since the calling routine does not yet know the number of available | |
1028 | * commands. | |
1029 | */ | |
dd00cc48 | 1030 | adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL); |
1da177e4 LT |
1031 | |
1032 | if (adapter->kscb_list == NULL) { | |
1033 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1034 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1035 | __LINE__)); |
1036 | goto out_free_ibuf; | |
1037 | } | |
1da177e4 LT |
1038 | |
1039 | // memory allocation for our command packets | |
1040 | if (megaraid_mbox_setup_dma_pools(adapter) != 0) { | |
1041 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1042 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1043 | __LINE__)); |
1044 | goto out_free_scb_list; | |
1045 | } | |
1046 | ||
1047 | // Adjust the scb pointers and link in the free pool | |
1048 | epthru_pci_blk = raid_dev->epthru_pool; | |
1049 | sg_pci_blk = raid_dev->sg_pool; | |
1050 | mbox_pci_blk = raid_dev->mbox_pool; | |
1051 | ||
1052 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1053 | scb = adapter->kscb_list + i; | |
1054 | ccb = raid_dev->ccb_list + i; | |
1055 | ||
1056 | ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); | |
1057 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
1058 | ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); | |
1059 | ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; | |
1060 | ||
1061 | // make sure the mailbox is aligned properly | |
1062 | if (ccb->mbox_dma_h & 0x0F) { | |
1063 | con_log(CL_ANN, (KERN_CRIT | |
1064 | "megaraid mbox: not aligned on 16-bytes\n")); | |
1065 | ||
1066 | goto out_teardown_dma_pools; | |
1067 | } | |
1068 | ||
1069 | ccb->epthru = (mraid_epassthru_t *) | |
1070 | epthru_pci_blk[i].vaddr; | |
1071 | ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; | |
1072 | ccb->pthru = (mraid_passthru_t *)ccb->epthru; | |
1073 | ccb->pthru_dma_h = ccb->epthru_dma_h; | |
1074 | ||
1075 | ||
1076 | ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; | |
1077 | ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; | |
1078 | ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; | |
1079 | ||
1080 | scb->ccb = (caddr_t)ccb; | |
1081 | scb->gp = 0; | |
1082 | ||
1083 | scb->sno = i; // command index | |
1084 | ||
1085 | scb->scp = NULL; | |
1086 | scb->state = SCB_FREE; | |
1087 | scb->dma_direction = PCI_DMA_NONE; | |
1088 | scb->dma_type = MRAID_DMA_NONE; | |
1089 | scb->dev_channel = -1; | |
1090 | scb->dev_target = -1; | |
1091 | ||
1092 | // put scb in the free pool | |
1093 | list_add_tail(&scb->list, &adapter->kscb_pool); | |
1094 | } | |
1095 | ||
1096 | return 0; | |
1097 | ||
1098 | out_teardown_dma_pools: | |
1099 | megaraid_mbox_teardown_dma_pools(adapter); | |
1100 | out_free_scb_list: | |
1101 | kfree(adapter->kscb_list); | |
1102 | out_free_ibuf: | |
1103 | pci_free_consistent(pdev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, | |
1104 | adapter->ibuf_dma_h); | |
1105 | out_free_common_mbox: | |
1106 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1107 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1108 | ||
1109 | return -1; | |
1110 | } | |
1111 | ||
1112 | ||
1113 | /** | |
1114 | * megaraid_free_cmd_packets - free memory | |
a69b74d3 | 1115 | * @adapter : soft state of the raid controller |
1da177e4 | 1116 | * |
a69b74d3 | 1117 | * Release memory resources allocated for commands. |
1da177e4 LT |
1118 | */ |
1119 | static void | |
1120 | megaraid_free_cmd_packets(adapter_t *adapter) | |
1121 | { | |
1122 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1123 | ||
1124 | megaraid_mbox_teardown_dma_pools(adapter); | |
1125 | ||
1126 | kfree(adapter->kscb_list); | |
1127 | ||
1128 | pci_free_consistent(adapter->pdev, MBOX_IBUF_SIZE, | |
1129 | (void *)adapter->ibuf, adapter->ibuf_dma_h); | |
1130 | ||
1131 | pci_free_consistent(adapter->pdev, sizeof(mbox64_t), | |
1132 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); | |
1133 | return; | |
1134 | } | |
1135 | ||
1136 | ||
1137 | /** | |
1138 | * megaraid_mbox_setup_dma_pools - setup dma pool for command packets | |
a69b74d3 | 1139 | * @adapter : HBA soft state |
1da177e4 | 1140 | * |
a69b74d3 RD |
1141 | * Setup the dma pools for mailbox, passthru and extended passthru structures, |
1142 | * and scatter-gather lists. | |
1da177e4 LT |
1143 | */ |
1144 | static int | |
1145 | megaraid_mbox_setup_dma_pools(adapter_t *adapter) | |
1146 | { | |
1147 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1148 | struct mraid_pci_blk *epthru_pci_blk; | |
1149 | struct mraid_pci_blk *sg_pci_blk; | |
1150 | struct mraid_pci_blk *mbox_pci_blk; | |
1151 | int i; | |
1152 | ||
1153 | ||
1154 | ||
1155 | // Allocate memory for 16-bytes aligned mailboxes | |
1156 | raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool", | |
1157 | adapter->pdev, | |
1158 | sizeof(mbox64_t) + 16, | |
1159 | 16, 0); | |
1160 | ||
1161 | if (raid_dev->mbox_pool_handle == NULL) { | |
1162 | goto fail_setup_dma_pool; | |
1163 | } | |
1164 | ||
1165 | mbox_pci_blk = raid_dev->mbox_pool; | |
1166 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1167 | mbox_pci_blk[i].vaddr = pci_pool_alloc( | |
1168 | raid_dev->mbox_pool_handle, | |
1169 | GFP_KERNEL, | |
1170 | &mbox_pci_blk[i].dma_addr); | |
1171 | if (!mbox_pci_blk[i].vaddr) { | |
1172 | goto fail_setup_dma_pool; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | /* | |
1177 | * Allocate memory for each embedded passthru strucuture pointer | |
1178 | * Request for a 128 bytes aligned structure for each passthru command | |
1179 | * structure | |
1180 | * Since passthru and extended passthru commands are exclusive, they | |
1181 | * share common memory pool. Passthru structures piggyback on memory | |
1182 | * allocted to extended passthru since passthru is smaller of the two | |
1183 | */ | |
1184 | raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru", | |
1185 | adapter->pdev, sizeof(mraid_epassthru_t), 128, 0); | |
1186 | ||
1187 | if (raid_dev->epthru_pool_handle == NULL) { | |
1188 | goto fail_setup_dma_pool; | |
1189 | } | |
1190 | ||
1191 | epthru_pci_blk = raid_dev->epthru_pool; | |
1192 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1193 | epthru_pci_blk[i].vaddr = pci_pool_alloc( | |
1194 | raid_dev->epthru_pool_handle, | |
1195 | GFP_KERNEL, | |
1196 | &epthru_pci_blk[i].dma_addr); | |
1197 | if (!epthru_pci_blk[i].vaddr) { | |
1198 | goto fail_setup_dma_pool; | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | ||
1203 | // Allocate memory for each scatter-gather list. Request for 512 bytes | |
1204 | // alignment for each sg list | |
1205 | raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg", | |
1206 | adapter->pdev, | |
1207 | sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, | |
1208 | 512, 0); | |
1209 | ||
1210 | if (raid_dev->sg_pool_handle == NULL) { | |
1211 | goto fail_setup_dma_pool; | |
1212 | } | |
1213 | ||
1214 | sg_pci_blk = raid_dev->sg_pool; | |
1215 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1216 | sg_pci_blk[i].vaddr = pci_pool_alloc( | |
1217 | raid_dev->sg_pool_handle, | |
1218 | GFP_KERNEL, | |
1219 | &sg_pci_blk[i].dma_addr); | |
1220 | if (!sg_pci_blk[i].vaddr) { | |
1221 | goto fail_setup_dma_pool; | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | return 0; | |
1226 | ||
1227 | fail_setup_dma_pool: | |
1228 | megaraid_mbox_teardown_dma_pools(adapter); | |
1229 | return -1; | |
1230 | } | |
1231 | ||
1232 | ||
1233 | /** | |
1234 | * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets | |
a69b74d3 | 1235 | * @adapter : HBA soft state |
1da177e4 | 1236 | * |
a69b74d3 RD |
1237 | * Teardown the dma pool for mailbox, passthru and extended passthru |
1238 | * structures, and scatter-gather lists. | |
1da177e4 LT |
1239 | */ |
1240 | static void | |
1241 | megaraid_mbox_teardown_dma_pools(adapter_t *adapter) | |
1242 | { | |
1243 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1244 | struct mraid_pci_blk *epthru_pci_blk; | |
1245 | struct mraid_pci_blk *sg_pci_blk; | |
1246 | struct mraid_pci_blk *mbox_pci_blk; | |
1247 | int i; | |
1248 | ||
1249 | ||
1250 | sg_pci_blk = raid_dev->sg_pool; | |
1251 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { | |
1252 | pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, | |
1253 | sg_pci_blk[i].dma_addr); | |
1254 | } | |
1255 | if (raid_dev->sg_pool_handle) | |
1256 | pci_pool_destroy(raid_dev->sg_pool_handle); | |
1257 | ||
1258 | ||
1259 | epthru_pci_blk = raid_dev->epthru_pool; | |
1260 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { | |
1261 | pci_pool_free(raid_dev->epthru_pool_handle, | |
1262 | epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); | |
1263 | } | |
1264 | if (raid_dev->epthru_pool_handle) | |
1265 | pci_pool_destroy(raid_dev->epthru_pool_handle); | |
1266 | ||
1267 | ||
1268 | mbox_pci_blk = raid_dev->mbox_pool; | |
1269 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { | |
1270 | pci_pool_free(raid_dev->mbox_pool_handle, | |
1271 | mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); | |
1272 | } | |
1273 | if (raid_dev->mbox_pool_handle) | |
1274 | pci_pool_destroy(raid_dev->mbox_pool_handle); | |
1275 | ||
1276 | return; | |
1277 | } | |
1278 | ||
1279 | ||
1280 | /** | |
1281 | * megaraid_alloc_scb - detach and return a scb from the free list | |
1282 | * @adapter : controller's soft state | |
a69b74d3 | 1283 | * @scp : pointer to the scsi command to be executed |
1da177e4 | 1284 | * |
a69b74d3 RD |
1285 | * Return the scb from the head of the free list. %NULL if there are none |
1286 | * available. | |
1287 | */ | |
858119e1 | 1288 | static scb_t * |
1da177e4 LT |
1289 | megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) |
1290 | { | |
1291 | struct list_head *head = &adapter->kscb_pool; | |
1292 | scb_t *scb = NULL; | |
1293 | unsigned long flags; | |
1294 | ||
1295 | // detach scb from free pool | |
1296 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1297 | ||
1298 | if (list_empty(head)) { | |
1299 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1300 | return NULL; | |
1301 | } | |
1302 | ||
1303 | scb = list_entry(head->next, scb_t, list); | |
1304 | list_del_init(&scb->list); | |
1305 | ||
1306 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1307 | ||
1308 | scb->state = SCB_ACTIVE; | |
1309 | scb->scp = scp; | |
1310 | scb->dma_type = MRAID_DMA_NONE; | |
1311 | ||
1312 | return scb; | |
1313 | } | |
1314 | ||
1315 | ||
1316 | /** | |
1317 | * megaraid_dealloc_scb - return the scb to the free pool | |
1318 | * @adapter : controller's soft state | |
1319 | * @scb : scb to be freed | |
1320 | * | |
a69b74d3 | 1321 | * Return the scb back to the free list of scbs. The caller must 'flush' the |
1da177e4 LT |
1322 | * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. |
1323 | * NOTE NOTE: Make sure the scb is not on any list before calling this | |
1324 | * routine. | |
a69b74d3 | 1325 | */ |
1da177e4 LT |
1326 | static inline void |
1327 | megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) | |
1328 | { | |
1329 | unsigned long flags; | |
1330 | ||
1331 | // put scb in the free pool | |
1332 | scb->state = SCB_FREE; | |
1333 | scb->scp = NULL; | |
1334 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1335 | ||
1336 | list_add(&scb->list, &adapter->kscb_pool); | |
1337 | ||
1338 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1339 | ||
1340 | return; | |
1341 | } | |
1342 | ||
1343 | ||
1344 | /** | |
1345 | * megaraid_mbox_mksgl - make the scatter-gather list | |
a69b74d3 RD |
1346 | * @adapter : controller's soft state |
1347 | * @scb : scsi control block | |
1da177e4 | 1348 | * |
a69b74d3 | 1349 | * Prepare the scatter-gather list. |
1da177e4 | 1350 | */ |
858119e1 | 1351 | static int |
1da177e4 LT |
1352 | megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) |
1353 | { | |
1354 | struct scatterlist *sgl; | |
1355 | mbox_ccb_t *ccb; | |
1da177e4 LT |
1356 | struct scsi_cmnd *scp; |
1357 | int sgcnt; | |
1358 | int i; | |
1359 | ||
1360 | ||
1361 | scp = scb->scp; | |
1362 | ccb = (mbox_ccb_t *)scb->ccb; | |
1363 | ||
32fbac22 FT |
1364 | sgcnt = scsi_dma_map(scp); |
1365 | BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen); | |
1366 | ||
1da177e4 | 1367 | // no mapping required if no data to be transferred |
32fbac22 | 1368 | if (!sgcnt) |
1da177e4 LT |
1369 | return 0; |
1370 | ||
1da177e4 LT |
1371 | scb->dma_type = MRAID_DMA_WSG; |
1372 | ||
32fbac22 | 1373 | scsi_for_each_sg(scp, sgl, sgcnt, i) { |
1da177e4 LT |
1374 | ccb->sgl64[i].address = sg_dma_address(sgl); |
1375 | ccb->sgl64[i].length = sg_dma_len(sgl); | |
1376 | } | |
1377 | ||
1378 | // Return count of SG nodes | |
1379 | return sgcnt; | |
1380 | } | |
1381 | ||
1382 | ||
1383 | /** | |
1384 | * mbox_post_cmd - issue a mailbox command | |
a69b74d3 RD |
1385 | * @adapter : controller's soft state |
1386 | * @scb : command to be issued | |
1da177e4 | 1387 | * |
a69b74d3 | 1388 | * Post the command to the controller if mailbox is available. |
1da177e4 | 1389 | */ |
858119e1 | 1390 | static int |
1da177e4 LT |
1391 | mbox_post_cmd(adapter_t *adapter, scb_t *scb) |
1392 | { | |
1393 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1394 | mbox64_t *mbox64; | |
1395 | mbox_t *mbox; | |
1396 | mbox_ccb_t *ccb; | |
1397 | unsigned long flags; | |
1398 | unsigned int i = 0; | |
1399 | ||
1400 | ||
1401 | ccb = (mbox_ccb_t *)scb->ccb; | |
1402 | mbox = raid_dev->mbox; | |
1403 | mbox64 = raid_dev->mbox64; | |
1404 | ||
1405 | /* | |
1406 | * Check for busy mailbox. If it is, return failure - the caller | |
1407 | * should retry later. | |
1408 | */ | |
1409 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
1410 | ||
1411 | if (unlikely(mbox->busy)) { | |
1412 | do { | |
1413 | udelay(1); | |
1414 | i++; | |
1415 | rmb(); | |
1416 | } while(mbox->busy && (i < max_mbox_busy_wait)); | |
1417 | ||
1418 | if (mbox->busy) { | |
1419 | ||
1420 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1421 | ||
1422 | return -1; | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | ||
1427 | // Copy this command's mailbox data into "adapter's" mailbox | |
1428 | memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); | |
1429 | mbox->cmdid = scb->sno; | |
1430 | ||
1431 | adapter->outstanding_cmds++; | |
1432 | ||
32fbac22 FT |
1433 | if (scb->dma_direction == PCI_DMA_TODEVICE) |
1434 | pci_dma_sync_sg_for_device(adapter->pdev, | |
1435 | scsi_sglist(scb->scp), | |
1436 | scsi_sg_count(scb->scp), | |
1437 | PCI_DMA_TODEVICE); | |
1da177e4 LT |
1438 | |
1439 | mbox->busy = 1; // Set busy | |
1440 | mbox->poll = 0; | |
1441 | mbox->ack = 0; | |
1442 | wmb(); | |
1443 | ||
1444 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
1445 | ||
1446 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1447 | ||
1448 | return 0; | |
1449 | } | |
1450 | ||
1451 | ||
1452 | /** | |
1453 | * megaraid_queue_command - generic queue entry point for all LLDs | |
1454 | * @scp : pointer to the scsi command to be executed | |
1455 | * @done : callback routine to be called after the cmd has be completed | |
1456 | * | |
1457 | * Queue entry point for mailbox based controllers. | |
1458 | */ | |
1459 | static int | |
f281233d | 1460 | megaraid_queue_command_lck(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) |
1da177e4 LT |
1461 | { |
1462 | adapter_t *adapter; | |
1463 | scb_t *scb; | |
1464 | int if_busy; | |
1465 | ||
1466 | adapter = SCP2ADAPTER(scp); | |
1467 | scp->scsi_done = done; | |
1468 | scp->result = 0; | |
1469 | ||
1da177e4 LT |
1470 | /* |
1471 | * Allocate and build a SCB request | |
1472 | * if_busy flag will be set if megaraid_mbox_build_cmd() command could | |
1473 | * not allocate scb. We will return non-zero status in that case. | |
1474 | * NOTE: scb can be null even though certain commands completed | |
1475 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would | |
1476 | * return 0 in that case, and we would do the callback right away. | |
1477 | */ | |
1478 | if_busy = 0; | |
f2c8dc40 | 1479 | scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); |
1da177e4 LT |
1480 | if (!scb) { // command already completed |
1481 | done(scp); | |
1482 | return 0; | |
1483 | } | |
1484 | ||
f2c8dc40 | 1485 | megaraid_mbox_runpendq(adapter, scb); |
1da177e4 LT |
1486 | return if_busy; |
1487 | } | |
1488 | ||
f281233d JG |
1489 | static DEF_SCSI_QCMD(megaraid_queue_command) |
1490 | ||
1da177e4 | 1491 | /** |
a69b74d3 RD |
1492 | * megaraid_mbox_build_cmd - transform the mid-layer scsi commands |
1493 | * @adapter : controller's soft state | |
1494 | * @scp : mid-layer scsi command pointer | |
1495 | * @busy : set if request could not be completed because of lack of | |
1da177e4 LT |
1496 | * resources |
1497 | * | |
a69b74d3 RD |
1498 | * Transform the mid-layer scsi command to megaraid firmware lingua. |
1499 | * Convert the command issued by mid-layer to format understood by megaraid | |
1500 | * firmware. We also complete certain commands without sending them to firmware. | |
1da177e4 LT |
1501 | */ |
1502 | static scb_t * | |
1503 | megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) | |
1504 | { | |
1505 | mraid_device_t *rdev = ADAP2RAIDDEV(adapter); | |
1506 | int channel; | |
1507 | int target; | |
1508 | int islogical; | |
1509 | mbox_ccb_t *ccb; | |
1510 | mraid_passthru_t *pthru; | |
1511 | mbox64_t *mbox64; | |
1512 | mbox_t *mbox; | |
1513 | scb_t *scb; | |
1514 | char skip[] = "skipping"; | |
1515 | char scan[] = "scanning"; | |
1516 | char *ss; | |
1517 | ||
1518 | ||
1519 | /* | |
1520 | * Get the appropriate device map for the device this command is | |
1521 | * intended for | |
1522 | */ | |
1523 | MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); | |
1524 | ||
1525 | /* | |
1526 | * Logical drive commands | |
1527 | */ | |
1528 | if (islogical) { | |
1529 | switch (scp->cmnd[0]) { | |
1530 | case TEST_UNIT_READY: | |
1531 | /* | |
1532 | * Do we support clustering and is the support enabled | |
1533 | * If no, return success always | |
1534 | */ | |
1535 | if (!adapter->ha) { | |
1536 | scp->result = (DID_OK << 16); | |
1537 | return NULL; | |
1538 | } | |
1539 | ||
1540 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1541 | scp->result = (DID_ERROR << 16); | |
1542 | *busy = 1; | |
1543 | return NULL; | |
1544 | } | |
1545 | ||
1546 | scb->dma_direction = scp->sc_data_direction; | |
1547 | scb->dev_channel = 0xFF; | |
1548 | scb->dev_target = target; | |
1549 | ccb = (mbox_ccb_t *)scb->ccb; | |
1550 | ||
1551 | /* | |
1552 | * The command id will be provided by the command | |
1553 | * issuance routine | |
1554 | */ | |
1555 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1556 | ccb->raw_mbox[2] = RESERVATION_STATUS; | |
1557 | ccb->raw_mbox[3] = target; | |
1558 | ||
1559 | return scb; | |
1560 | ||
1561 | case MODE_SENSE: | |
32fbac22 FT |
1562 | { |
1563 | struct scatterlist *sgl; | |
1564 | caddr_t vaddr; | |
1da177e4 | 1565 | |
32fbac22 | 1566 | sgl = scsi_sglist(scp); |
45711f1a JA |
1567 | if (sg_page(sgl)) { |
1568 | vaddr = (caddr_t) sg_virt(&sgl[0]); | |
1da177e4 | 1569 | |
32fbac22 | 1570 | memset(vaddr, 0, scp->cmnd[4]); |
1da177e4 LT |
1571 | } |
1572 | else { | |
32fbac22 FT |
1573 | con_log(CL_ANN, (KERN_WARNING |
1574 | "megaraid mailbox: invalid sg:%d\n", | |
1575 | __LINE__)); | |
1da177e4 | 1576 | } |
32fbac22 FT |
1577 | } |
1578 | scp->result = (DID_OK << 16); | |
1579 | return NULL; | |
1da177e4 LT |
1580 | |
1581 | case INQUIRY: | |
1582 | /* | |
1583 | * Display the channel scan for logical drives | |
1584 | * Do not display scan for a channel if already done. | |
1585 | */ | |
1586 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1587 | ||
1588 | con_log(CL_ANN, (KERN_INFO | |
1589 | "scsi[%d]: scanning scsi channel %d", | |
1590 | adapter->host->host_no, | |
1591 | SCP2CHANNEL(scp))); | |
1592 | ||
1593 | con_log(CL_ANN, ( | |
1594 | " [virtual] for logical drives\n")); | |
1595 | ||
1596 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1597 | } | |
1598 | ||
aa677bc7 JS |
1599 | if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { |
1600 | scp->sense_buffer[0] = 0x70; | |
1601 | scp->sense_buffer[2] = ILLEGAL_REQUEST; | |
1602 | scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; | |
1603 | scp->result = CHECK_CONDITION << 1; | |
1604 | return NULL; | |
1605 | } | |
1606 | ||
1da177e4 LT |
1607 | /* Fall through */ |
1608 | ||
1609 | case READ_CAPACITY: | |
1610 | /* | |
1611 | * Do not allow LUN > 0 for logical drives and | |
1612 | * requests for more than 40 logical drives | |
1613 | */ | |
1614 | if (SCP2LUN(scp)) { | |
1615 | scp->result = (DID_BAD_TARGET << 16); | |
1616 | return NULL; | |
1617 | } | |
1618 | if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { | |
1619 | scp->result = (DID_BAD_TARGET << 16); | |
1620 | return NULL; | |
1621 | } | |
1622 | ||
1623 | ||
1624 | /* Allocate a SCB and initialize passthru */ | |
1625 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1626 | scp->result = (DID_ERROR << 16); | |
1627 | *busy = 1; | |
1628 | return NULL; | |
1629 | } | |
1630 | ||
1631 | ccb = (mbox_ccb_t *)scb->ccb; | |
1632 | scb->dev_channel = 0xFF; | |
1633 | scb->dev_target = target; | |
1634 | pthru = ccb->pthru; | |
1635 | mbox = ccb->mbox; | |
1636 | mbox64 = ccb->mbox64; | |
1637 | ||
1638 | pthru->timeout = 0; | |
1639 | pthru->ars = 1; | |
1640 | pthru->reqsenselen = 14; | |
1641 | pthru->islogical = 1; | |
1642 | pthru->logdrv = target; | |
1643 | pthru->cdblen = scp->cmd_len; | |
1644 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1645 | ||
1646 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1647 | scb->dma_direction = scp->sc_data_direction; | |
1648 | ||
32fbac22 | 1649 | pthru->dataxferlen = scsi_bufflen(scp); |
1da177e4 LT |
1650 | pthru->dataxferaddr = ccb->sgl_dma_h; |
1651 | pthru->numsge = megaraid_mbox_mksgl(adapter, | |
1652 | scb); | |
1653 | ||
1654 | mbox->xferaddr = 0xFFFFFFFF; | |
1655 | mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; | |
1656 | mbox64->xferaddr_hi = 0; | |
1657 | ||
1658 | return scb; | |
1659 | ||
1660 | case READ_6: | |
1661 | case WRITE_6: | |
1662 | case READ_10: | |
1663 | case WRITE_10: | |
1664 | case READ_12: | |
1665 | case WRITE_12: | |
1666 | ||
1667 | /* | |
1668 | * Allocate a SCB and initialize mailbox | |
1669 | */ | |
1670 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1671 | scp->result = (DID_ERROR << 16); | |
1672 | *busy = 1; | |
1673 | return NULL; | |
1674 | } | |
1675 | ccb = (mbox_ccb_t *)scb->ccb; | |
1676 | scb->dev_channel = 0xFF; | |
1677 | scb->dev_target = target; | |
1678 | mbox = ccb->mbox; | |
1679 | mbox64 = ccb->mbox64; | |
1680 | mbox->logdrv = target; | |
1681 | ||
1682 | /* | |
1683 | * A little HACK: 2nd bit is zero for all scsi read | |
1684 | * commands and is set for all scsi write commands | |
1685 | */ | |
1686 | mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: | |
1687 | MBOXCMD_LREAD64 ; | |
1688 | ||
1689 | /* | |
1690 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
1691 | */ | |
1692 | if (scp->cmd_len == 6) { | |
1693 | mbox->numsectors = (uint32_t)scp->cmnd[4]; | |
1694 | mbox->lba = | |
1695 | ((uint32_t)scp->cmnd[1] << 16) | | |
1696 | ((uint32_t)scp->cmnd[2] << 8) | | |
1697 | (uint32_t)scp->cmnd[3]; | |
1698 | ||
1699 | mbox->lba &= 0x1FFFFF; | |
1700 | } | |
1701 | ||
1702 | /* | |
1703 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
1704 | */ | |
1705 | else if (scp->cmd_len == 10) { | |
1706 | mbox->numsectors = | |
1707 | (uint32_t)scp->cmnd[8] | | |
1708 | ((uint32_t)scp->cmnd[7] << 8); | |
1709 | mbox->lba = | |
1710 | ((uint32_t)scp->cmnd[2] << 24) | | |
1711 | ((uint32_t)scp->cmnd[3] << 16) | | |
1712 | ((uint32_t)scp->cmnd[4] << 8) | | |
1713 | (uint32_t)scp->cmnd[5]; | |
1714 | } | |
1715 | ||
1716 | /* | |
1717 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
1718 | */ | |
1719 | else if (scp->cmd_len == 12) { | |
1720 | mbox->lba = | |
1721 | ((uint32_t)scp->cmnd[2] << 24) | | |
1722 | ((uint32_t)scp->cmnd[3] << 16) | | |
1723 | ((uint32_t)scp->cmnd[4] << 8) | | |
1724 | (uint32_t)scp->cmnd[5]; | |
1725 | ||
1726 | mbox->numsectors = | |
1727 | ((uint32_t)scp->cmnd[6] << 24) | | |
1728 | ((uint32_t)scp->cmnd[7] << 16) | | |
1729 | ((uint32_t)scp->cmnd[8] << 8) | | |
1730 | (uint32_t)scp->cmnd[9]; | |
1731 | } | |
1732 | else { | |
1733 | con_log(CL_ANN, (KERN_WARNING | |
1734 | "megaraid: unsupported CDB length\n")); | |
1735 | ||
1736 | megaraid_dealloc_scb(adapter, scb); | |
1737 | ||
1738 | scp->result = (DID_ERROR << 16); | |
1739 | return NULL; | |
1740 | } | |
1741 | ||
1742 | scb->dma_direction = scp->sc_data_direction; | |
1743 | ||
1744 | // Calculate Scatter-Gather info | |
1745 | mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; | |
1746 | mbox->numsge = megaraid_mbox_mksgl(adapter, | |
1747 | scb); | |
1748 | mbox->xferaddr = 0xFFFFFFFF; | |
1749 | mbox64->xferaddr_hi = 0; | |
1750 | ||
1751 | return scb; | |
1752 | ||
1753 | case RESERVE: | |
1754 | case RELEASE: | |
1755 | /* | |
1756 | * Do we support clustering and is the support enabled | |
1757 | */ | |
1758 | if (!adapter->ha) { | |
1759 | scp->result = (DID_BAD_TARGET << 16); | |
1760 | return NULL; | |
1761 | } | |
1762 | ||
1763 | /* | |
1764 | * Allocate a SCB and initialize mailbox | |
1765 | */ | |
1766 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1767 | scp->result = (DID_ERROR << 16); | |
1768 | *busy = 1; | |
1769 | return NULL; | |
1770 | } | |
1771 | ||
1772 | ccb = (mbox_ccb_t *)scb->ccb; | |
1773 | scb->dev_channel = 0xFF; | |
1774 | scb->dev_target = target; | |
1775 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1776 | ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? | |
1777 | RESERVE_LD : RELEASE_LD; | |
1778 | ||
1779 | ccb->raw_mbox[3] = target; | |
1780 | scb->dma_direction = scp->sc_data_direction; | |
1781 | ||
1782 | return scb; | |
1783 | ||
1784 | default: | |
1785 | scp->result = (DID_BAD_TARGET << 16); | |
1786 | return NULL; | |
1787 | } | |
1788 | } | |
1789 | else { // Passthru device commands | |
1790 | ||
1791 | // Do not allow access to target id > 15 or LUN > 7 | |
1792 | if (target > 15 || SCP2LUN(scp) > 7) { | |
1793 | scp->result = (DID_BAD_TARGET << 16); | |
1794 | return NULL; | |
1795 | } | |
1796 | ||
1797 | // if fast load option was set and scan for last device is | |
1798 | // over, reset the fast_load flag so that during a possible | |
1799 | // next scan, devices can be made available | |
1800 | if (rdev->fast_load && (target == 15) && | |
1801 | (SCP2CHANNEL(scp) == adapter->max_channel -1)) { | |
1802 | ||
1803 | con_log(CL_ANN, (KERN_INFO | |
1804 | "megaraid[%d]: physical device scan re-enabled\n", | |
1805 | adapter->host->host_no)); | |
1806 | rdev->fast_load = 0; | |
1807 | } | |
1808 | ||
1809 | /* | |
1810 | * Display the channel scan for physical devices | |
1811 | */ | |
1812 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1813 | ||
1814 | ss = rdev->fast_load ? skip : scan; | |
1815 | ||
1816 | con_log(CL_ANN, (KERN_INFO | |
1817 | "scsi[%d]: %s scsi channel %d [Phy %d]", | |
1818 | adapter->host->host_no, ss, SCP2CHANNEL(scp), | |
1819 | channel)); | |
1820 | ||
1821 | con_log(CL_ANN, ( | |
1822 | " for non-raid devices\n")); | |
1823 | ||
1824 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1825 | } | |
1826 | ||
1827 | // disable channel sweep if fast load option given | |
1828 | if (rdev->fast_load) { | |
1829 | scp->result = (DID_BAD_TARGET << 16); | |
1830 | return NULL; | |
1831 | } | |
1832 | ||
1833 | // Allocate a SCB and initialize passthru | |
1834 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1835 | scp->result = (DID_ERROR << 16); | |
1836 | *busy = 1; | |
1837 | return NULL; | |
1838 | } | |
1839 | ||
1840 | ccb = (mbox_ccb_t *)scb->ccb; | |
1841 | scb->dev_channel = channel; | |
1842 | scb->dev_target = target; | |
1843 | scb->dma_direction = scp->sc_data_direction; | |
1844 | mbox = ccb->mbox; | |
1845 | mbox64 = ccb->mbox64; | |
1846 | ||
1847 | // Does this firmware support extended CDBs | |
1848 | if (adapter->max_cdb_sz == 16) { | |
1849 | mbox->cmd = MBOXCMD_EXTPTHRU; | |
1850 | ||
1851 | megaraid_mbox_prepare_epthru(adapter, scb, scp); | |
1852 | ||
1853 | mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; | |
1854 | mbox64->xferaddr_hi = 0; | |
1855 | mbox->xferaddr = 0xFFFFFFFF; | |
1856 | } | |
1857 | else { | |
1858 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1859 | ||
1860 | megaraid_mbox_prepare_pthru(adapter, scb, scp); | |
1861 | ||
1862 | mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; | |
1863 | mbox64->xferaddr_hi = 0; | |
1864 | mbox->xferaddr = 0xFFFFFFFF; | |
1865 | } | |
1866 | return scb; | |
1867 | } | |
1868 | ||
1869 | // NOT REACHED | |
1870 | } | |
1871 | ||
1872 | ||
1873 | /** | |
1874 | * megaraid_mbox_runpendq - execute commands queued in the pending queue | |
1875 | * @adapter : controller's soft state | |
a69b74d3 | 1876 | * @scb_q : SCB to be queued in the pending list |
1da177e4 | 1877 | * |
a69b74d3 | 1878 | * Scan the pending list for commands which are not yet issued and try to |
1da177e4 LT |
1879 | * post to the controller. The SCB can be a null pointer, which would indicate |
1880 | * no SCB to be queue, just try to execute the ones in the pending list. | |
1881 | * | |
1882 | * NOTE: We do not actually traverse the pending list. The SCBs are plucked | |
1883 | * out from the head of the pending list. If it is successfully issued, the | |
1884 | * next SCB is at the head now. | |
1885 | */ | |
1886 | static void | |
1887 | megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) | |
1888 | { | |
1889 | scb_t *scb; | |
1890 | unsigned long flags; | |
1891 | ||
1892 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1893 | ||
1894 | if (scb_q) { | |
1895 | scb_q->state = SCB_PENDQ; | |
1896 | list_add_tail(&scb_q->list, &adapter->pend_list); | |
1897 | } | |
1898 | ||
1899 | // if the adapter in not in quiescent mode, post the commands to FW | |
1900 | if (adapter->quiescent) { | |
1901 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1902 | return; | |
1903 | } | |
1904 | ||
1905 | while (!list_empty(&adapter->pend_list)) { | |
1906 | ||
1907 | assert_spin_locked(PENDING_LIST_LOCK(adapter)); | |
1908 | ||
1909 | scb = list_entry(adapter->pend_list.next, scb_t, list); | |
1910 | ||
1911 | // remove the scb from the pending list and try to | |
1912 | // issue. If we are unable to issue it, put back in | |
1913 | // the pending list and return | |
1914 | ||
1915 | list_del_init(&scb->list); | |
1916 | ||
1917 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1918 | ||
1919 | // if mailbox was busy, return SCB back to pending | |
1920 | // list. Make sure to add at the head, since that's | |
1921 | // where it would have been removed from | |
1922 | ||
1923 | scb->state = SCB_ISSUED; | |
1924 | ||
1925 | if (mbox_post_cmd(adapter, scb) != 0) { | |
1926 | ||
1927 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1928 | ||
1929 | scb->state = SCB_PENDQ; | |
1930 | ||
1931 | list_add(&scb->list, &adapter->pend_list); | |
1932 | ||
1933 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
1934 | flags); | |
1935 | ||
1936 | return; | |
1937 | } | |
1938 | ||
1939 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1940 | } | |
1941 | ||
1942 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1943 | ||
1944 | ||
1945 | return; | |
1946 | } | |
1947 | ||
1948 | ||
1949 | /** | |
1950 | * megaraid_mbox_prepare_pthru - prepare a command for physical devices | |
a69b74d3 RD |
1951 | * @adapter : pointer to controller's soft state |
1952 | * @scb : scsi control block | |
1953 | * @scp : scsi command from the mid-layer | |
1da177e4 | 1954 | * |
a69b74d3 | 1955 | * Prepare a command for the scsi physical devices. |
1da177e4 LT |
1956 | */ |
1957 | static void | |
1958 | megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, | |
1959 | struct scsi_cmnd *scp) | |
1960 | { | |
1961 | mbox_ccb_t *ccb; | |
1962 | mraid_passthru_t *pthru; | |
1963 | uint8_t channel; | |
1964 | uint8_t target; | |
1965 | ||
1966 | ccb = (mbox_ccb_t *)scb->ccb; | |
1967 | pthru = ccb->pthru; | |
1968 | channel = scb->dev_channel; | |
1969 | target = scb->dev_target; | |
1970 | ||
1971 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
1972 | pthru->timeout = 4; | |
1973 | pthru->ars = 1; | |
1974 | pthru->islogical = 0; | |
1975 | pthru->channel = 0; | |
1976 | pthru->target = (channel << 4) | target; | |
1977 | pthru->logdrv = SCP2LUN(scp); | |
1978 | pthru->reqsenselen = 14; | |
1979 | pthru->cdblen = scp->cmd_len; | |
1980 | ||
1981 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1982 | ||
32fbac22 FT |
1983 | if (scsi_bufflen(scp)) { |
1984 | pthru->dataxferlen = scsi_bufflen(scp); | |
1da177e4 LT |
1985 | pthru->dataxferaddr = ccb->sgl_dma_h; |
1986 | pthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
1987 | } | |
1988 | else { | |
1989 | pthru->dataxferaddr = 0; | |
1990 | pthru->dataxferlen = 0; | |
1991 | pthru->numsge = 0; | |
1992 | } | |
1993 | return; | |
1994 | } | |
1995 | ||
1996 | ||
1997 | /** | |
1998 | * megaraid_mbox_prepare_epthru - prepare a command for physical devices | |
a69b74d3 RD |
1999 | * @adapter : pointer to controller's soft state |
2000 | * @scb : scsi control block | |
2001 | * @scp : scsi command from the mid-layer | |
1da177e4 | 2002 | * |
3948ff8b | 2003 | * Prepare a command for the scsi physical devices. This routine prepares |
a69b74d3 | 2004 | * commands for devices which can take extended CDBs (>10 bytes). |
1da177e4 LT |
2005 | */ |
2006 | static void | |
2007 | megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, | |
2008 | struct scsi_cmnd *scp) | |
2009 | { | |
2010 | mbox_ccb_t *ccb; | |
2011 | mraid_epassthru_t *epthru; | |
2012 | uint8_t channel; | |
2013 | uint8_t target; | |
2014 | ||
2015 | ccb = (mbox_ccb_t *)scb->ccb; | |
2016 | epthru = ccb->epthru; | |
2017 | channel = scb->dev_channel; | |
2018 | target = scb->dev_target; | |
2019 | ||
2020 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
2021 | epthru->timeout = 4; | |
2022 | epthru->ars = 1; | |
2023 | epthru->islogical = 0; | |
2024 | epthru->channel = 0; | |
2025 | epthru->target = (channel << 4) | target; | |
2026 | epthru->logdrv = SCP2LUN(scp); | |
2027 | epthru->reqsenselen = 14; | |
2028 | epthru->cdblen = scp->cmd_len; | |
2029 | ||
2030 | memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); | |
2031 | ||
32fbac22 FT |
2032 | if (scsi_bufflen(scp)) { |
2033 | epthru->dataxferlen = scsi_bufflen(scp); | |
1da177e4 LT |
2034 | epthru->dataxferaddr = ccb->sgl_dma_h; |
2035 | epthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2036 | } | |
2037 | else { | |
2038 | epthru->dataxferaddr = 0; | |
2039 | epthru->dataxferlen = 0; | |
2040 | epthru->numsge = 0; | |
2041 | } | |
2042 | return; | |
2043 | } | |
2044 | ||
2045 | ||
2046 | /** | |
2047 | * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs | |
a69b74d3 | 2048 | * @adapter : controller's soft state |
1da177e4 | 2049 | * |
a69b74d3 | 2050 | * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the |
1da177e4 LT |
2051 | * completed command and put them on the completed list for later processing. |
2052 | * | |
2053 | * Returns: 1 if the interrupt is valid, 0 otherwise | |
2054 | */ | |
858119e1 | 2055 | static int |
1da177e4 LT |
2056 | megaraid_ack_sequence(adapter_t *adapter) |
2057 | { | |
2058 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2059 | mbox_t *mbox; | |
2060 | scb_t *scb; | |
2061 | uint8_t nstatus; | |
2062 | uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; | |
2063 | struct list_head clist; | |
2064 | int handled; | |
2065 | uint32_t dword; | |
2066 | unsigned long flags; | |
2067 | int i, j; | |
2068 | ||
2069 | ||
2070 | mbox = raid_dev->mbox; | |
2071 | ||
2072 | // move the SCBs from the firmware completed array to our local list | |
2073 | INIT_LIST_HEAD(&clist); | |
2074 | ||
2075 | // loop till F/W has more commands for us to complete | |
2076 | handled = 0; | |
2077 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
2078 | do { | |
2079 | /* | |
2080 | * Check if a valid interrupt is pending. If found, force the | |
2081 | * interrupt line low. | |
2082 | */ | |
2083 | dword = RDOUTDOOR(raid_dev); | |
2084 | if (dword != 0x10001234) break; | |
2085 | ||
2086 | handled = 1; | |
2087 | ||
2088 | WROUTDOOR(raid_dev, 0x10001234); | |
2089 | ||
2090 | nstatus = 0; | |
2091 | // wait for valid numstatus to post | |
2092 | for (i = 0; i < 0xFFFFF; i++) { | |
2093 | if (mbox->numstatus != 0xFF) { | |
2094 | nstatus = mbox->numstatus; | |
2095 | break; | |
2096 | } | |
2097 | rmb(); | |
2098 | } | |
2099 | mbox->numstatus = 0xFF; | |
2100 | ||
2101 | adapter->outstanding_cmds -= nstatus; | |
2102 | ||
2103 | for (i = 0; i < nstatus; i++) { | |
2104 | ||
2105 | // wait for valid command index to post | |
2106 | for (j = 0; j < 0xFFFFF; j++) { | |
2107 | if (mbox->completed[i] != 0xFF) break; | |
2108 | rmb(); | |
2109 | } | |
2110 | completed[i] = mbox->completed[i]; | |
2111 | mbox->completed[i] = 0xFF; | |
2112 | ||
2113 | if (completed[i] == 0xFF) { | |
2114 | con_log(CL_ANN, (KERN_CRIT | |
2115 | "megaraid: command posting timed out\n")); | |
2116 | ||
2117 | BUG(); | |
2118 | continue; | |
2119 | } | |
2120 | ||
2121 | // Get SCB associated with this command id | |
2122 | if (completed[i] >= MBOX_MAX_SCSI_CMDS) { | |
2123 | // a cmm command | |
2124 | scb = adapter->uscb_list + (completed[i] - | |
2125 | MBOX_MAX_SCSI_CMDS); | |
2126 | } | |
2127 | else { | |
2128 | // an os command | |
2129 | scb = adapter->kscb_list + completed[i]; | |
2130 | } | |
2131 | ||
2132 | scb->status = mbox->status; | |
2133 | list_add_tail(&scb->list, &clist); | |
2134 | } | |
2135 | ||
2136 | // Acknowledge interrupt | |
2137 | WRINDOOR(raid_dev, 0x02); | |
2138 | ||
2139 | } while(1); | |
2140 | ||
2141 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
2142 | ||
2143 | ||
2144 | // put the completed commands in the completed list. DPC would | |
2145 | // complete these commands later | |
2146 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2147 | ||
2148 | list_splice(&clist, &adapter->completed_list); | |
2149 | ||
2150 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2151 | ||
2152 | ||
2153 | // schedule the DPC if there is some work for it | |
2154 | if (handled) | |
2155 | tasklet_schedule(&adapter->dpc_h); | |
2156 | ||
2157 | return handled; | |
2158 | } | |
2159 | ||
2160 | ||
2161 | /** | |
2162 | * megaraid_isr - isr for memory based mailbox based controllers | |
a69b74d3 RD |
2163 | * @irq : irq |
2164 | * @devp : pointer to our soft state | |
1da177e4 LT |
2165 | * |
2166 | * Interrupt service routine for memory-mapped mailbox controllers. | |
2167 | */ | |
2168 | static irqreturn_t | |
7d12e780 | 2169 | megaraid_isr(int irq, void *devp) |
1da177e4 LT |
2170 | { |
2171 | adapter_t *adapter = devp; | |
2172 | int handled; | |
2173 | ||
2174 | handled = megaraid_ack_sequence(adapter); | |
2175 | ||
2176 | /* Loop through any pending requests */ | |
2177 | if (!adapter->quiescent) { | |
2178 | megaraid_mbox_runpendq(adapter, NULL); | |
2179 | } | |
2180 | ||
2181 | return IRQ_RETVAL(handled); | |
2182 | } | |
2183 | ||
2184 | ||
2185 | /** | |
2186 | * megaraid_mbox_sync_scb - sync kernel buffers | |
2187 | * @adapter : controller's soft state | |
2188 | * @scb : pointer to the resource packet | |
2189 | * | |
2190 | * DMA sync if required. | |
2191 | */ | |
858119e1 | 2192 | static void |
1da177e4 LT |
2193 | megaraid_mbox_sync_scb(adapter_t *adapter, scb_t *scb) |
2194 | { | |
2195 | mbox_ccb_t *ccb; | |
2196 | ||
2197 | ccb = (mbox_ccb_t *)scb->ccb; | |
2198 | ||
32fbac22 FT |
2199 | if (scb->dma_direction == PCI_DMA_FROMDEVICE) |
2200 | pci_dma_sync_sg_for_cpu(adapter->pdev, | |
2201 | scsi_sglist(scb->scp), | |
2202 | scsi_sg_count(scb->scp), | |
1da177e4 | 2203 | PCI_DMA_FROMDEVICE); |
1da177e4 | 2204 | |
32fbac22 | 2205 | scsi_dma_unmap(scb->scp); |
1da177e4 LT |
2206 | return; |
2207 | } | |
2208 | ||
2209 | ||
2210 | /** | |
2211 | * megaraid_mbox_dpc - the tasklet to complete the commands from completed list | |
2212 | * @devp : pointer to HBA soft state | |
2213 | * | |
2214 | * Pick up the commands from the completed list and send back to the owners. | |
2215 | * This is a reentrant function and does not assume any locks are held while | |
2216 | * it is being called. | |
2217 | */ | |
2218 | static void | |
2219 | megaraid_mbox_dpc(unsigned long devp) | |
2220 | { | |
2221 | adapter_t *adapter = (adapter_t *)devp; | |
2222 | mraid_device_t *raid_dev; | |
2223 | struct list_head clist; | |
2224 | struct scatterlist *sgl; | |
2225 | scb_t *scb; | |
2226 | scb_t *tmp; | |
2227 | struct scsi_cmnd *scp; | |
2228 | mraid_passthru_t *pthru; | |
2229 | mraid_epassthru_t *epthru; | |
2230 | mbox_ccb_t *ccb; | |
2231 | int islogical; | |
2232 | int pdev_index; | |
2233 | int pdev_state; | |
2234 | mbox_t *mbox; | |
2235 | unsigned long flags; | |
2236 | uint8_t c; | |
2237 | int status; | |
c005fb4f | 2238 | uioc_t *kioc; |
1da177e4 LT |
2239 | |
2240 | ||
2241 | if (!adapter) return; | |
2242 | ||
2243 | raid_dev = ADAP2RAIDDEV(adapter); | |
2244 | ||
2245 | // move the SCBs from the completed list to our local list | |
2246 | INIT_LIST_HEAD(&clist); | |
2247 | ||
2248 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2249 | ||
2250 | list_splice_init(&adapter->completed_list, &clist); | |
2251 | ||
2252 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2253 | ||
2254 | ||
2255 | list_for_each_entry_safe(scb, tmp, &clist, list) { | |
2256 | ||
2257 | status = scb->status; | |
2258 | scp = scb->scp; | |
2259 | ccb = (mbox_ccb_t *)scb->ccb; | |
2260 | pthru = ccb->pthru; | |
2261 | epthru = ccb->epthru; | |
2262 | mbox = ccb->mbox; | |
2263 | ||
2264 | // Make sure f/w has completed a valid command | |
2265 | if (scb->state != SCB_ISSUED) { | |
2266 | con_log(CL_ANN, (KERN_CRIT | |
2267 | "megaraid critical err: invalid command %d:%d:%p\n", | |
2268 | scb->sno, scb->state, scp)); | |
2269 | BUG(); | |
2270 | continue; // Must never happen! | |
2271 | } | |
2272 | ||
2273 | // check for the management command and complete it right away | |
2274 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { | |
2275 | scb->state = SCB_FREE; | |
2276 | scb->status = status; | |
2277 | ||
2278 | // remove from local clist | |
2279 | list_del_init(&scb->list); | |
2280 | ||
c005fb4f JS |
2281 | kioc = (uioc_t *)scb->gp; |
2282 | kioc->status = 0; | |
2283 | ||
1da177e4 LT |
2284 | megaraid_mbox_mm_done(adapter, scb); |
2285 | ||
2286 | continue; | |
2287 | } | |
2288 | ||
2289 | // Was an abort issued for this command earlier | |
2290 | if (scb->state & SCB_ABORT) { | |
2291 | con_log(CL_ANN, (KERN_NOTICE | |
5cd049a5 CH |
2292 | "megaraid: aborted cmd [%x] completed\n", |
2293 | scb->sno)); | |
1da177e4 LT |
2294 | } |
2295 | ||
2296 | /* | |
2297 | * If the inquiry came of a disk drive which is not part of | |
2298 | * any RAID array, expose it to the kernel. For this to be | |
2299 | * enabled, user must set the "megaraid_expose_unconf_disks" | |
2300 | * flag to 1 by specifying it on module parameter list. | |
2301 | * This would enable data migration off drives from other | |
2302 | * configurations. | |
2303 | */ | |
2304 | islogical = MRAID_IS_LOGICAL(adapter, scp); | |
2305 | if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 | |
2306 | && IS_RAID_CH(raid_dev, scb->dev_channel)) { | |
2307 | ||
32fbac22 | 2308 | sgl = scsi_sglist(scp); |
45711f1a JA |
2309 | if (sg_page(sgl)) { |
2310 | c = *(unsigned char *) sg_virt(&sgl[0]); | |
32fbac22 FT |
2311 | } else { |
2312 | con_log(CL_ANN, (KERN_WARNING | |
2313 | "megaraid mailbox: invalid sg:%d\n", | |
2314 | __LINE__)); | |
2315 | c = 0; | |
1da177e4 LT |
2316 | } |
2317 | ||
2318 | if ((c & 0x1F ) == TYPE_DISK) { | |
2319 | pdev_index = (scb->dev_channel * 16) + | |
2320 | scb->dev_target; | |
2321 | pdev_state = | |
2322 | raid_dev->pdrv_state[pdev_index] & 0x0F; | |
2323 | ||
2324 | if (pdev_state == PDRV_ONLINE || | |
2325 | pdev_state == PDRV_FAILED || | |
2326 | pdev_state == PDRV_RBLD || | |
2327 | pdev_state == PDRV_HOTSPARE || | |
2328 | megaraid_expose_unconf_disks == 0) { | |
2329 | ||
2330 | status = 0xF0; | |
2331 | } | |
2332 | } | |
2333 | } | |
2334 | ||
2335 | // Convert MegaRAID status to Linux error code | |
2336 | switch (status) { | |
2337 | ||
2338 | case 0x00: | |
2339 | ||
2340 | scp->result = (DID_OK << 16); | |
2341 | break; | |
2342 | ||
2343 | case 0x02: | |
2344 | ||
2345 | /* set sense_buffer and result fields */ | |
2346 | if (mbox->cmd == MBOXCMD_PASSTHRU || | |
2347 | mbox->cmd == MBOXCMD_PASSTHRU64) { | |
2348 | ||
2349 | memcpy(scp->sense_buffer, pthru->reqsensearea, | |
2350 | 14); | |
2351 | ||
2352 | scp->result = DRIVER_SENSE << 24 | | |
2353 | DID_OK << 16 | CHECK_CONDITION << 1; | |
2354 | } | |
2355 | else { | |
2356 | if (mbox->cmd == MBOXCMD_EXTPTHRU) { | |
2357 | ||
2358 | memcpy(scp->sense_buffer, | |
2359 | epthru->reqsensearea, 14); | |
2360 | ||
2361 | scp->result = DRIVER_SENSE << 24 | | |
2362 | DID_OK << 16 | | |
2363 | CHECK_CONDITION << 1; | |
2364 | } else { | |
2365 | scp->sense_buffer[0] = 0x70; | |
2366 | scp->sense_buffer[2] = ABORTED_COMMAND; | |
2367 | scp->result = CHECK_CONDITION << 1; | |
2368 | } | |
2369 | } | |
2370 | break; | |
2371 | ||
2372 | case 0x08: | |
2373 | ||
2374 | scp->result = DID_BUS_BUSY << 16 | status; | |
2375 | break; | |
2376 | ||
2377 | default: | |
2378 | ||
2379 | /* | |
2380 | * If TEST_UNIT_READY fails, we know RESERVATION_STATUS | |
2381 | * failed | |
2382 | */ | |
2383 | if (scp->cmnd[0] == TEST_UNIT_READY) { | |
2384 | scp->result = DID_ERROR << 16 | | |
2385 | RESERVATION_CONFLICT << 1; | |
2386 | } | |
2387 | else | |
2388 | /* | |
2389 | * Error code returned is 1 if Reserve or Release | |
2390 | * failed or the input parameter is invalid | |
2391 | */ | |
2392 | if (status == 1 && (scp->cmnd[0] == RESERVE || | |
2393 | scp->cmnd[0] == RELEASE)) { | |
2394 | ||
2395 | scp->result = DID_ERROR << 16 | | |
2396 | RESERVATION_CONFLICT << 1; | |
2397 | } | |
2398 | else { | |
2399 | scp->result = DID_BAD_TARGET << 16 | status; | |
2400 | } | |
2401 | } | |
2402 | ||
2403 | // print a debug message for all failed commands | |
2404 | if (status) { | |
2405 | megaraid_mbox_display_scb(adapter, scb); | |
2406 | } | |
2407 | ||
2408 | // Free our internal resources and call the mid-layer callback | |
2409 | // routine | |
2410 | megaraid_mbox_sync_scb(adapter, scb); | |
2411 | ||
2412 | // remove from local clist | |
2413 | list_del_init(&scb->list); | |
2414 | ||
2415 | // put back in free list | |
2416 | megaraid_dealloc_scb(adapter, scb); | |
2417 | ||
2418 | // send the scsi packet back to kernel | |
1da177e4 | 2419 | scp->scsi_done(scp); |
1da177e4 LT |
2420 | } |
2421 | ||
2422 | return; | |
2423 | } | |
2424 | ||
2425 | ||
2426 | /** | |
2427 | * megaraid_abort_handler - abort the scsi command | |
2428 | * @scp : command to be aborted | |
2429 | * | |
2430 | * Abort a previous SCSI request. Only commands on the pending list can be | |
2431 | * aborted. All the commands issued to the F/W must complete. | |
2432 | **/ | |
2433 | static int | |
f2c8dc40 | 2434 | megaraid_abort_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2435 | { |
2436 | adapter_t *adapter; | |
2437 | mraid_device_t *raid_dev; | |
2438 | scb_t *scb; | |
2439 | scb_t *tmp; | |
2440 | int found; | |
2441 | unsigned long flags; | |
2442 | int i; | |
2443 | ||
2444 | ||
2445 | adapter = SCP2ADAPTER(scp); | |
2446 | raid_dev = ADAP2RAIDDEV(adapter); | |
2447 | ||
1da177e4 | 2448 | con_log(CL_ANN, (KERN_WARNING |
5cd049a5 CH |
2449 | "megaraid: aborting cmd=%x <c=%d t=%d l=%d>\n", |
2450 | scp->cmnd[0], SCP2CHANNEL(scp), | |
1da177e4 LT |
2451 | SCP2TARGET(scp), SCP2LUN(scp))); |
2452 | ||
2453 | // If FW has stopped responding, simply return failure | |
2454 | if (raid_dev->hw_error) { | |
2455 | con_log(CL_ANN, (KERN_NOTICE | |
2456 | "megaraid: hw error, not aborting\n")); | |
2457 | return FAILED; | |
2458 | } | |
2459 | ||
2460 | // There might a race here, where the command was completed by the | |
2461 | // firmware and now it is on the completed list. Before we could | |
2462 | // complete the command to the kernel in dpc, the abort came. | |
2463 | // Find out if this is the case to avoid the race. | |
2464 | scb = NULL; | |
2465 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2466 | list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { | |
2467 | ||
2468 | if (scb->scp == scp) { // Found command | |
2469 | ||
2470 | list_del_init(&scb->list); // from completed list | |
2471 | ||
2472 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2473 | "megaraid: %d[%d:%d], abort from completed list\n", |
2474 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2475 | |
2476 | scp->result = (DID_ABORT << 16); | |
2477 | scp->scsi_done(scp); | |
2478 | ||
2479 | megaraid_dealloc_scb(adapter, scb); | |
2480 | ||
2481 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), | |
2482 | flags); | |
2483 | ||
2484 | return SUCCESS; | |
2485 | } | |
2486 | } | |
2487 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2488 | ||
2489 | ||
2490 | // Find out if this command is still on the pending list. If it is and | |
2491 | // was never issued, abort and return success. If the command is owned | |
2492 | // by the firmware, we must wait for it to complete by the FW. | |
2493 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2494 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
2495 | ||
2496 | if (scb->scp == scp) { // Found command | |
2497 | ||
2498 | list_del_init(&scb->list); // from pending list | |
2499 | ||
2500 | ASSERT(!(scb->state & SCB_ISSUED)); | |
2501 | ||
2502 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2503 | "megaraid abort: [%d:%d], driver owner\n", |
2504 | scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2505 | |
2506 | scp->result = (DID_ABORT << 16); | |
2507 | scp->scsi_done(scp); | |
2508 | ||
2509 | megaraid_dealloc_scb(adapter, scb); | |
2510 | ||
2511 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
2512 | flags); | |
2513 | ||
2514 | return SUCCESS; | |
2515 | } | |
2516 | } | |
2517 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2518 | ||
2519 | ||
2520 | // Check do we even own this command, in which case this would be | |
2521 | // owned by the firmware. The only way to locate the FW scb is to | |
2522 | // traverse through the list of all SCB, since driver does not | |
2523 | // maintain these SCBs on any list | |
2524 | found = 0; | |
f2c8dc40 | 2525 | spin_lock_irq(&adapter->lock); |
1da177e4 LT |
2526 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
2527 | scb = adapter->kscb_list + i; | |
2528 | ||
2529 | if (scb->scp == scp) { | |
2530 | ||
2531 | found = 1; | |
2532 | ||
2533 | if (!(scb->state & SCB_ISSUED)) { | |
2534 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2535 | "megaraid abort: %d[%d:%d], invalid state\n", |
2536 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2537 | BUG(); |
2538 | } | |
2539 | else { | |
2540 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2541 | "megaraid abort: %d[%d:%d], fw owner\n", |
2542 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2543 | } |
2544 | } | |
2545 | } | |
f2c8dc40 | 2546 | spin_unlock_irq(&adapter->lock); |
1da177e4 LT |
2547 | |
2548 | if (!found) { | |
5cd049a5 | 2549 | con_log(CL_ANN, (KERN_WARNING "megaraid abort: do now own\n")); |
1da177e4 LT |
2550 | |
2551 | // FIXME: Should there be a callback for this command? | |
2552 | return SUCCESS; | |
2553 | } | |
2554 | ||
2555 | // We cannot actually abort a command owned by firmware, return | |
2556 | // failure and wait for reset. In host reset handler, we will find out | |
2557 | // if the HBA is still live | |
2558 | return FAILED; | |
2559 | } | |
2560 | ||
1da177e4 | 2561 | /** |
3948ff8b | 2562 | * megaraid_reset_handler - device reset handler for mailbox based driver |
1da177e4 LT |
2563 | * @scp : reference command |
2564 | * | |
2565 | * Reset handler for the mailbox based controller. First try to find out if | |
2566 | * the FW is still live, in which case the outstanding commands counter mut go | |
2567 | * down to 0. If that happens, also issue the reservation reset command to | |
2568 | * relinquish (possible) reservations on the logical drives connected to this | |
a69b74d3 | 2569 | * host. |
1da177e4 LT |
2570 | **/ |
2571 | static int | |
f2c8dc40 | 2572 | megaraid_reset_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2573 | { |
2574 | adapter_t *adapter; | |
2575 | scb_t *scb; | |
2576 | scb_t *tmp; | |
2577 | mraid_device_t *raid_dev; | |
2578 | unsigned long flags; | |
2579 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2580 | int rval; | |
2581 | int recovery_window; | |
2582 | int recovering; | |
2583 | int i; | |
c005fb4f | 2584 | uioc_t *kioc; |
1da177e4 LT |
2585 | |
2586 | adapter = SCP2ADAPTER(scp); | |
2587 | raid_dev = ADAP2RAIDDEV(adapter); | |
2588 | ||
1da177e4 LT |
2589 | // return failure if adapter is not responding |
2590 | if (raid_dev->hw_error) { | |
2591 | con_log(CL_ANN, (KERN_NOTICE | |
2592 | "megaraid: hw error, cannot reset\n")); | |
2593 | return FAILED; | |
2594 | } | |
2595 | ||
2596 | ||
2597 | // Under exceptional conditions, FW can take up to 3 minutes to | |
2598 | // complete command processing. Wait for additional 2 minutes for the | |
2599 | // pending commands counter to go down to 0. If it doesn't, let the | |
2600 | // controller be marked offline | |
2601 | // Also, reset all the commands currently owned by the driver | |
2602 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2603 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
1da177e4 LT |
2604 | list_del_init(&scb->list); // from pending list |
2605 | ||
c005fb4f JS |
2606 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
2607 | con_log(CL_ANN, (KERN_WARNING | |
2608 | "megaraid: IOCTL packet with %d[%d:%d] being reset\n", | |
2609 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 | 2610 | |
c005fb4f | 2611 | scb->status = -1; |
1da177e4 | 2612 | |
c005fb4f JS |
2613 | kioc = (uioc_t *)scb->gp; |
2614 | kioc->status = -EFAULT; | |
2615 | ||
2616 | megaraid_mbox_mm_done(adapter, scb); | |
2617 | } else { | |
2618 | if (scb->scp == scp) { // Found command | |
2619 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2620 | "megaraid: %d[%d:%d], reset from pending list\n", |
2621 | scb->sno, scb->dev_channel, scb->dev_target)); | |
c005fb4f JS |
2622 | } else { |
2623 | con_log(CL_ANN, (KERN_WARNING | |
2624 | "megaraid: IO packet with %d[%d:%d] being reset\n", | |
2625 | scb->sno, scb->dev_channel, scb->dev_target)); | |
2626 | } | |
2627 | ||
2628 | scb->scp->result = (DID_RESET << 16); | |
2629 | scb->scp->scsi_done(scb->scp); | |
2630 | ||
2631 | megaraid_dealloc_scb(adapter, scb); | |
2632 | } | |
1da177e4 LT |
2633 | } |
2634 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2635 | ||
2636 | if (adapter->outstanding_cmds) { | |
2637 | con_log(CL_ANN, (KERN_NOTICE | |
2638 | "megaraid: %d outstanding commands. Max wait %d sec\n", | |
c005fb4f JS |
2639 | adapter->outstanding_cmds, |
2640 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT))); | |
1da177e4 LT |
2641 | } |
2642 | ||
1da177e4 LT |
2643 | recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
2644 | ||
2645 | recovering = adapter->outstanding_cmds; | |
2646 | ||
c005fb4f | 2647 | for (i = 0; i < recovery_window; i++) { |
1da177e4 LT |
2648 | |
2649 | megaraid_ack_sequence(adapter); | |
2650 | ||
2651 | // print a message once every 5 seconds only | |
2652 | if (!(i % 5)) { | |
2653 | con_log(CL_ANN, ( | |
2654 | "megaraid mbox: Wait for %d commands to complete:%d\n", | |
2655 | adapter->outstanding_cmds, | |
c005fb4f | 2656 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); |
1da177e4 LT |
2657 | } |
2658 | ||
25985edc | 2659 | // bailout if no recovery happened in reset time |
c005fb4f | 2660 | if (adapter->outstanding_cmds == 0) { |
1da177e4 LT |
2661 | break; |
2662 | } | |
2663 | ||
2664 | msleep(1000); | |
2665 | } | |
2666 | ||
f2c8dc40 | 2667 | spin_lock(&adapter->lock); |
1da177e4 LT |
2668 | |
2669 | // If still outstanding commands, bail out | |
2670 | if (adapter->outstanding_cmds) { | |
2671 | con_log(CL_ANN, (KERN_WARNING | |
2672 | "megaraid mbox: critical hardware error!\n")); | |
2673 | ||
2674 | raid_dev->hw_error = 1; | |
2675 | ||
f2c8dc40 CH |
2676 | rval = FAILED; |
2677 | goto out; | |
1da177e4 LT |
2678 | } |
2679 | else { | |
2680 | con_log(CL_ANN, (KERN_NOTICE | |
af901ca1 | 2681 | "megaraid mbox: reset sequence completed successfully\n")); |
1da177e4 LT |
2682 | } |
2683 | ||
2684 | ||
2685 | // If the controller supports clustering, reset reservations | |
f2c8dc40 CH |
2686 | if (!adapter->ha) { |
2687 | rval = SUCCESS; | |
2688 | goto out; | |
2689 | } | |
1da177e4 LT |
2690 | |
2691 | // clear reservations if any | |
2692 | raw_mbox[0] = CLUSTER_CMD; | |
2693 | raw_mbox[2] = RESET_RESERVATIONS; | |
2694 | ||
2695 | rval = SUCCESS; | |
2696 | if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { | |
2697 | con_log(CL_ANN, | |
2698 | (KERN_INFO "megaraid: reservation reset\n")); | |
2699 | } | |
2700 | else { | |
2701 | rval = FAILED; | |
2702 | con_log(CL_ANN, (KERN_WARNING | |
2703 | "megaraid: reservation reset failed\n")); | |
2704 | } | |
2705 | ||
f2c8dc40 | 2706 | out: |
6548b0e5 | 2707 | spin_unlock(&adapter->lock); |
1da177e4 LT |
2708 | return rval; |
2709 | } | |
2710 | ||
1da177e4 LT |
2711 | /* |
2712 | * START: internal commands library | |
2713 | * | |
2714 | * This section of the driver has the common routine used by the driver and | |
2715 | * also has all the FW routines | |
2716 | */ | |
2717 | ||
2718 | /** | |
2719 | * mbox_post_sync_cmd() - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2720 | * @adapter : controller's soft state |
2721 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2722 | * |
2723 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
a69b74d3 | 2724 | * controllers. |
1da177e4 LT |
2725 | */ |
2726 | static int | |
2727 | mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) | |
2728 | { | |
2729 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2730 | mbox64_t *mbox64; | |
2731 | mbox_t *mbox; | |
2732 | uint8_t status; | |
2733 | int i; | |
2734 | ||
2735 | ||
2736 | mbox64 = raid_dev->mbox64; | |
2737 | mbox = raid_dev->mbox; | |
2738 | ||
2739 | /* | |
2740 | * Wait until mailbox is free | |
2741 | */ | |
2742 | if (megaraid_busywait_mbox(raid_dev) != 0) | |
2743 | goto blocked_mailbox; | |
2744 | ||
2745 | /* | |
2746 | * Copy mailbox data into host structure | |
2747 | */ | |
2748 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
2749 | mbox->cmdid = 0xFE; | |
2750 | mbox->busy = 1; | |
2751 | mbox->poll = 0; | |
2752 | mbox->ack = 0; | |
2753 | mbox->numstatus = 0xFF; | |
2754 | mbox->status = 0xFF; | |
2755 | ||
2756 | wmb(); | |
2757 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2758 | ||
2759 | // wait for maximum 1 second for status to post. If the status is not | |
2760 | // available within 1 second, assume FW is initializing and wait | |
2761 | // for an extended amount of time | |
2762 | if (mbox->numstatus == 0xFF) { // status not yet available | |
53b3531b | 2763 | udelay(25); |
1da177e4 LT |
2764 | |
2765 | for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { | |
2766 | rmb(); | |
2767 | msleep(1); | |
2768 | } | |
2769 | ||
2770 | ||
2771 | if (i == 1000) { | |
2772 | con_log(CL_ANN, (KERN_NOTICE | |
2773 | "megaraid mailbox: wait for FW to boot ")); | |
2774 | ||
2775 | for (i = 0; (mbox->numstatus == 0xFF) && | |
2776 | (i < MBOX_RESET_WAIT); i++) { | |
2777 | rmb(); | |
2778 | con_log(CL_ANN, ("\b\b\b\b\b[%03d]", | |
2779 | MBOX_RESET_WAIT - i)); | |
2780 | msleep(1000); | |
2781 | } | |
2782 | ||
2783 | if (i == MBOX_RESET_WAIT) { | |
2784 | ||
2785 | con_log(CL_ANN, ( | |
2786 | "\nmegaraid mailbox: status not available\n")); | |
2787 | ||
2788 | return -1; | |
2789 | } | |
2790 | con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); | |
2791 | } | |
2792 | } | |
2793 | ||
2794 | // wait for maximum 1 second for poll semaphore | |
2795 | if (mbox->poll != 0x77) { | |
2796 | udelay(25); | |
2797 | ||
2798 | for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { | |
2799 | rmb(); | |
2800 | msleep(1); | |
2801 | } | |
2802 | ||
2803 | if (i == 1000) { | |
2804 | con_log(CL_ANN, (KERN_WARNING | |
2805 | "megaraid mailbox: could not get poll semaphore\n")); | |
2806 | return -1; | |
2807 | } | |
2808 | } | |
2809 | ||
2810 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2811 | wmb(); | |
2812 | ||
2813 | // wait for maximum 1 second for acknowledgement | |
2814 | if (RDINDOOR(raid_dev) & 0x2) { | |
2815 | udelay(25); | |
2816 | ||
2817 | for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { | |
2818 | rmb(); | |
2819 | msleep(1); | |
2820 | } | |
2821 | ||
2822 | if (i == 1000) { | |
2823 | con_log(CL_ANN, (KERN_WARNING | |
2824 | "megaraid mailbox: could not acknowledge\n")); | |
2825 | return -1; | |
2826 | } | |
2827 | } | |
2828 | mbox->poll = 0; | |
2829 | mbox->ack = 0x77; | |
2830 | ||
2831 | status = mbox->status; | |
2832 | ||
2833 | // invalidate the completed command id array. After command | |
2834 | // completion, firmware would write the valid id. | |
2835 | mbox->numstatus = 0xFF; | |
2836 | mbox->status = 0xFF; | |
2837 | for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { | |
2838 | mbox->completed[i] = 0xFF; | |
2839 | } | |
2840 | ||
2841 | return status; | |
2842 | ||
2843 | blocked_mailbox: | |
2844 | ||
2845 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); | |
2846 | return -1; | |
2847 | } | |
2848 | ||
2849 | ||
2850 | /** | |
2851 | * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2852 | * @adapter : controller's soft state |
2853 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2854 | * |
2855 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
2856 | * controllers. This is a faster version of the synchronous command and | |
a69b74d3 | 2857 | * therefore can be called in interrupt-context as well. |
1da177e4 LT |
2858 | */ |
2859 | static int | |
2860 | mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) | |
2861 | { | |
2862 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2863 | mbox_t *mbox; | |
2864 | long i; | |
2865 | ||
2866 | ||
2867 | mbox = raid_dev->mbox; | |
2868 | ||
2869 | // return immediately if the mailbox is busy | |
2870 | if (mbox->busy) return -1; | |
2871 | ||
2872 | // Copy mailbox data into host structure | |
2873 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); | |
2874 | mbox->cmdid = 0xFE; | |
2875 | mbox->busy = 1; | |
2876 | mbox->poll = 0; | |
2877 | mbox->ack = 0; | |
2878 | mbox->numstatus = 0xFF; | |
2879 | mbox->status = 0xFF; | |
2880 | ||
2881 | wmb(); | |
2882 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2883 | ||
c005fb4f | 2884 | for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) { |
1da177e4 | 2885 | if (mbox->numstatus != 0xFF) break; |
ed7e8ef7 | 2886 | rmb(); |
c005fb4f | 2887 | udelay(MBOX_SYNC_DELAY_200); |
1da177e4 LT |
2888 | } |
2889 | ||
c005fb4f | 2890 | if (i == MBOX_SYNC_WAIT_CNT) { |
1da177e4 LT |
2891 | // We may need to re-calibrate the counter |
2892 | con_log(CL_ANN, (KERN_CRIT | |
2893 | "megaraid: fast sync command timed out\n")); | |
2894 | } | |
2895 | ||
2896 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2897 | wmb(); | |
2898 | ||
2899 | return mbox->status; | |
2900 | } | |
2901 | ||
2902 | ||
2903 | /** | |
2904 | * megaraid_busywait_mbox() - Wait until the controller's mailbox is available | |
a69b74d3 | 2905 | * @raid_dev : RAID device (HBA) soft state |
1da177e4 | 2906 | * |
a69b74d3 RD |
2907 | * Wait until the controller's mailbox is available to accept more commands. |
2908 | * Wait for at most 1 second. | |
1da177e4 LT |
2909 | */ |
2910 | static int | |
2911 | megaraid_busywait_mbox(mraid_device_t *raid_dev) | |
2912 | { | |
2913 | mbox_t *mbox = raid_dev->mbox; | |
2914 | int i = 0; | |
2915 | ||
2916 | if (mbox->busy) { | |
2917 | udelay(25); | |
2918 | for (i = 0; mbox->busy && i < 1000; i++) | |
2919 | msleep(1); | |
2920 | } | |
2921 | ||
2922 | if (i < 1000) return 0; | |
2923 | else return -1; | |
2924 | } | |
2925 | ||
2926 | ||
2927 | /** | |
2928 | * megaraid_mbox_product_info - some static information about the controller | |
a69b74d3 | 2929 | * @adapter : our soft state |
1da177e4 | 2930 | * |
a69b74d3 | 2931 | * Issue commands to the controller to grab some parameters required by our |
1da177e4 LT |
2932 | * caller. |
2933 | */ | |
2934 | static int | |
2935 | megaraid_mbox_product_info(adapter_t *adapter) | |
2936 | { | |
2937 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2938 | mbox_t *mbox; | |
2939 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2940 | mraid_pinfo_t *pinfo; | |
2941 | dma_addr_t pinfo_dma_h; | |
2942 | mraid_inquiry3_t *mraid_inq3; | |
2943 | int i; | |
2944 | ||
2945 | ||
2946 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
2947 | mbox = (mbox_t *)raw_mbox; | |
2948 | ||
2949 | /* | |
2950 | * Issue an ENQUIRY3 command to find out certain adapter parameters, | |
2951 | * e.g., max channels, max commands etc. | |
2952 | */ | |
7c845eb5 JP |
2953 | pinfo = pci_zalloc_consistent(adapter->pdev, sizeof(mraid_pinfo_t), |
2954 | &pinfo_dma_h); | |
1da177e4 LT |
2955 | |
2956 | if (pinfo == NULL) { | |
2957 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 2958 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
2959 | __LINE__)); |
2960 | ||
2961 | return -1; | |
2962 | } | |
1da177e4 LT |
2963 | |
2964 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
2965 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
2966 | ||
2967 | raw_mbox[0] = FC_NEW_CONFIG; | |
2968 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; | |
2969 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; | |
2970 | ||
2971 | // Issue the command | |
2972 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
2973 | ||
2974 | con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); | |
2975 | ||
2976 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
2977 | pinfo, pinfo_dma_h); | |
2978 | ||
2979 | return -1; | |
2980 | } | |
2981 | ||
2982 | /* | |
2983 | * Collect information about state of each physical drive | |
2984 | * attached to the controller. We will expose all the disks | |
2985 | * which are not part of RAID | |
2986 | */ | |
2987 | mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; | |
2988 | for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { | |
2989 | raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; | |
2990 | } | |
2991 | ||
2992 | /* | |
2993 | * Get product info for information like number of channels, | |
2994 | * maximum commands supported. | |
2995 | */ | |
2996 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
2997 | mbox->xferaddr = (uint32_t)pinfo_dma_h; | |
2998 | ||
2999 | raw_mbox[0] = FC_NEW_CONFIG; | |
3000 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; | |
3001 | ||
3002 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3003 | ||
3004 | con_log(CL_ANN, (KERN_WARNING | |
3005 | "megaraid: product info failed\n")); | |
3006 | ||
3007 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), | |
3008 | pinfo, pinfo_dma_h); | |
3009 | ||
3010 | return -1; | |
3011 | } | |
3012 | ||
3013 | /* | |
3014 | * Setup some parameters for host, as required by our caller | |
3015 | */ | |
3016 | adapter->max_channel = pinfo->nchannels; | |
3017 | ||
3018 | /* | |
3019 | * we will export all the logical drives on a single channel. | |
3020 | * Add 1 since inquires do not come for inititor ID | |
3021 | */ | |
3022 | adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; | |
3023 | adapter->max_lun = 8; // up to 8 LUNs for non-disk devices | |
3024 | ||
3025 | /* | |
3026 | * These are the maximum outstanding commands for the scsi-layer | |
3027 | */ | |
3028 | adapter->max_cmds = MBOX_MAX_SCSI_CMDS; | |
3029 | ||
3030 | memset(adapter->fw_version, 0, VERSION_SIZE); | |
3031 | memset(adapter->bios_version, 0, VERSION_SIZE); | |
3032 | ||
3033 | memcpy(adapter->fw_version, pinfo->fw_version, 4); | |
3034 | adapter->fw_version[4] = 0; | |
3035 | ||
3036 | memcpy(adapter->bios_version, pinfo->bios_version, 4); | |
3037 | adapter->bios_version[4] = 0; | |
3038 | ||
3039 | con_log(CL_ANN, (KERN_NOTICE | |
3040 | "megaraid: fw version:[%s] bios version:[%s]\n", | |
3041 | adapter->fw_version, adapter->bios_version)); | |
3042 | ||
3043 | pci_free_consistent(adapter->pdev, sizeof(mraid_pinfo_t), pinfo, | |
3044 | pinfo_dma_h); | |
3045 | ||
3046 | return 0; | |
3047 | } | |
3048 | ||
3049 | ||
3050 | ||
3051 | /** | |
3052 | * megaraid_mbox_extended_cdb - check for support for extended CDBs | |
a69b74d3 | 3053 | * @adapter : soft state for the controller |
1da177e4 | 3054 | * |
a69b74d3 RD |
3055 | * This routine check whether the controller in question supports extended |
3056 | * ( > 10 bytes ) CDBs. | |
1da177e4 LT |
3057 | */ |
3058 | static int | |
3059 | megaraid_mbox_extended_cdb(adapter_t *adapter) | |
3060 | { | |
3061 | mbox_t *mbox; | |
3062 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3063 | int rval; | |
3064 | ||
3065 | mbox = (mbox_t *)raw_mbox; | |
3066 | ||
3067 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3068 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3069 | ||
3070 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3071 | ||
3072 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3073 | raw_mbox[2] = SUPPORT_EXT_CDB; | |
3074 | ||
3075 | /* | |
3076 | * Issue the command | |
3077 | */ | |
3078 | rval = 0; | |
3079 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3080 | rval = -1; | |
3081 | } | |
3082 | ||
3083 | return rval; | |
3084 | } | |
3085 | ||
3086 | ||
3087 | /** | |
3088 | * megaraid_mbox_support_ha - Do we support clustering | |
a69b74d3 RD |
3089 | * @adapter : soft state for the controller |
3090 | * @init_id : ID of the initiator | |
1da177e4 LT |
3091 | * |
3092 | * Determine if the firmware supports clustering and the ID of the initiator. | |
3093 | */ | |
3094 | static int | |
3095 | megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) | |
3096 | { | |
3097 | mbox_t *mbox; | |
3098 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3099 | int rval; | |
3100 | ||
3101 | ||
3102 | mbox = (mbox_t *)raw_mbox; | |
3103 | ||
3104 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3105 | ||
3106 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3107 | ||
3108 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3109 | ||
3110 | raw_mbox[0] = GET_TARGET_ID; | |
3111 | ||
3112 | // Issue the command | |
3113 | *init_id = 7; | |
3114 | rval = -1; | |
3115 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3116 | ||
3117 | *init_id = *(uint8_t *)adapter->ibuf; | |
3118 | ||
3119 | con_log(CL_ANN, (KERN_INFO | |
3120 | "megaraid: cluster firmware, initiator ID: %d\n", | |
3121 | *init_id)); | |
3122 | ||
3123 | rval = 0; | |
3124 | } | |
3125 | ||
3126 | return rval; | |
3127 | } | |
3128 | ||
3129 | ||
3130 | /** | |
3131 | * megaraid_mbox_support_random_del - Do we support random deletion | |
a69b74d3 | 3132 | * @adapter : soft state for the controller |
1da177e4 | 3133 | * |
a69b74d3 | 3134 | * Determine if the firmware supports random deletion. |
1da177e4 LT |
3135 | * Return: 1 is operation supported, 0 otherwise |
3136 | */ | |
3137 | static int | |
3138 | megaraid_mbox_support_random_del(adapter_t *adapter) | |
3139 | { | |
3140 | mbox_t *mbox; | |
3141 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3142 | int rval; | |
3143 | ||
69cd39e9 HR |
3144 | /* |
3145 | * Newer firmware on Dell CERC expect a different | |
3146 | * random deletion handling, so disable it. | |
3147 | */ | |
3148 | if (adapter->pdev->vendor == PCI_VENDOR_ID_AMI && | |
3149 | adapter->pdev->device == PCI_DEVICE_ID_AMI_MEGARAID3 && | |
3150 | adapter->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL && | |
3151 | adapter->pdev->subsystem_device == PCI_SUBSYS_ID_CERC_ATA100_4CH && | |
3152 | (adapter->fw_version[0] > '6' || | |
3153 | (adapter->fw_version[0] == '6' && | |
3154 | adapter->fw_version[2] > '6') || | |
3155 | (adapter->fw_version[0] == '6' | |
3156 | && adapter->fw_version[2] == '6' | |
3157 | && adapter->fw_version[3] > '1'))) { | |
3158 | con_log(CL_DLEVEL1, ("megaraid: disable random deletion\n")); | |
3159 | return 0; | |
3160 | } | |
1da177e4 LT |
3161 | |
3162 | mbox = (mbox_t *)raw_mbox; | |
3163 | ||
3164 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3165 | ||
3166 | raw_mbox[0] = FC_DEL_LOGDRV; | |
3167 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; | |
3168 | ||
3169 | // Issue the command | |
3170 | rval = 0; | |
3171 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3172 | ||
3173 | con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); | |
3174 | ||
3175 | rval = 1; | |
3176 | } | |
3177 | ||
3178 | return rval; | |
3179 | } | |
3180 | ||
3181 | ||
3182 | /** | |
3183 | * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware | |
a69b74d3 | 3184 | * @adapter : soft state for the controller |
1da177e4 LT |
3185 | * |
3186 | * Find out the maximum number of scatter-gather elements supported by the | |
a69b74d3 | 3187 | * firmware. |
1da177e4 LT |
3188 | */ |
3189 | static int | |
3190 | megaraid_mbox_get_max_sg(adapter_t *adapter) | |
3191 | { | |
3192 | mbox_t *mbox; | |
3193 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3194 | int nsg; | |
3195 | ||
3196 | ||
3197 | mbox = (mbox_t *)raw_mbox; | |
3198 | ||
3199 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3200 | ||
3201 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3202 | ||
3203 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3204 | ||
3205 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3206 | raw_mbox[2] = GET_MAX_SG_SUPPORT; | |
3207 | ||
3208 | // Issue the command | |
3209 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3210 | nsg = *(uint8_t *)adapter->ibuf; | |
3211 | } | |
3212 | else { | |
3213 | nsg = MBOX_DEFAULT_SG_SIZE; | |
3214 | } | |
3215 | ||
3216 | if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; | |
3217 | ||
3218 | return nsg; | |
3219 | } | |
3220 | ||
3221 | ||
3222 | /** | |
3223 | * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels | |
a69b74d3 | 3224 | * @adapter : soft state for the controller |
1da177e4 | 3225 | * |
a69b74d3 RD |
3226 | * Enumerate the RAID and SCSI channels for ROMB platforms so that channels |
3227 | * can be exported as regular SCSI channels. | |
1da177e4 LT |
3228 | */ |
3229 | static void | |
3230 | megaraid_mbox_enum_raid_scsi(adapter_t *adapter) | |
3231 | { | |
3232 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3233 | mbox_t *mbox; | |
3234 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3235 | ||
3236 | ||
3237 | mbox = (mbox_t *)raw_mbox; | |
3238 | ||
3239 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3240 | ||
3241 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3242 | ||
3243 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3244 | ||
3245 | raw_mbox[0] = CHNL_CLASS; | |
3246 | raw_mbox[2] = GET_CHNL_CLASS; | |
3247 | ||
3248 | // Issue the command. If the command fails, all channels are RAID | |
3249 | // channels | |
3250 | raid_dev->channel_class = 0xFF; | |
3251 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3252 | raid_dev->channel_class = *(uint8_t *)adapter->ibuf; | |
3253 | } | |
3254 | ||
3255 | return; | |
3256 | } | |
3257 | ||
3258 | ||
3259 | /** | |
3260 | * megaraid_mbox_flush_cache - flush adapter and disks cache | |
a69b74d3 | 3261 | * @adapter : soft state for the controller |
1da177e4 | 3262 | * |
a69b74d3 | 3263 | * Flush adapter cache followed by disks cache. |
1da177e4 LT |
3264 | */ |
3265 | static void | |
3266 | megaraid_mbox_flush_cache(adapter_t *adapter) | |
3267 | { | |
3268 | mbox_t *mbox; | |
3269 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3270 | ||
3271 | ||
3272 | mbox = (mbox_t *)raw_mbox; | |
3273 | ||
3274 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3275 | ||
3276 | raw_mbox[0] = FLUSH_ADAPTER; | |
3277 | ||
3278 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3279 | con_log(CL_ANN, ("megaraid: flush adapter failed\n")); | |
3280 | } | |
3281 | ||
3282 | raw_mbox[0] = FLUSH_SYSTEM; | |
3283 | ||
3284 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3285 | con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); | |
3286 | } | |
3287 | ||
3288 | return; | |
3289 | } | |
3290 | ||
3291 | ||
cd96d96f SP |
3292 | /** |
3293 | * megaraid_mbox_fire_sync_cmd - fire the sync cmd | |
a69b74d3 | 3294 | * @adapter : soft state for the controller |
cd96d96f | 3295 | * |
a69b74d3 | 3296 | * Clears the pending cmds in FW and reinits its RAID structs. |
cd96d96f SP |
3297 | */ |
3298 | static int | |
3299 | megaraid_mbox_fire_sync_cmd(adapter_t *adapter) | |
3300 | { | |
3301 | mbox_t *mbox; | |
3302 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3303 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3304 | mbox64_t *mbox64; | |
3305 | int status = 0; | |
3306 | int i; | |
3307 | uint32_t dword; | |
3308 | ||
3309 | mbox = (mbox_t *)raw_mbox; | |
3310 | ||
3311 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3312 | ||
3313 | raw_mbox[0] = 0xFF; | |
3314 | ||
3315 | mbox64 = raid_dev->mbox64; | |
3316 | mbox = raid_dev->mbox; | |
3317 | ||
3318 | /* Wait until mailbox is free */ | |
3319 | if (megaraid_busywait_mbox(raid_dev) != 0) { | |
3320 | status = 1; | |
3321 | goto blocked_mailbox; | |
3322 | } | |
3323 | ||
3324 | /* Copy mailbox data into host structure */ | |
3325 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
3326 | mbox->cmdid = 0xFE; | |
3327 | mbox->busy = 1; | |
3328 | mbox->poll = 0; | |
3329 | mbox->ack = 0; | |
3330 | mbox->numstatus = 0; | |
3331 | mbox->status = 0; | |
3332 | ||
3333 | wmb(); | |
3334 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
3335 | ||
3336 | /* Wait for maximum 1 min for status to post. | |
3337 | * If the Firmware SUPPORTS the ABOVE COMMAND, | |
3338 | * mbox->cmd will be set to 0 | |
3339 | * else | |
3340 | * the firmware will reject the command with | |
3341 | * mbox->numstatus set to 1 | |
3342 | */ | |
3343 | ||
3344 | i = 0; | |
3345 | status = 0; | |
3346 | while (!mbox->numstatus && mbox->cmd == 0xFF) { | |
3347 | rmb(); | |
3348 | msleep(1); | |
3349 | i++; | |
3350 | if (i > 1000 * 60) { | |
3351 | status = 1; | |
3352 | break; | |
3353 | } | |
3354 | } | |
3355 | if (mbox->numstatus == 1) | |
3356 | status = 1; /*cmd not supported*/ | |
3357 | ||
3358 | /* Check for interrupt line */ | |
3359 | dword = RDOUTDOOR(raid_dev); | |
3360 | WROUTDOOR(raid_dev, dword); | |
3361 | WRINDOOR(raid_dev,2); | |
3362 | ||
3363 | return status; | |
3364 | ||
3365 | blocked_mailbox: | |
3366 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n")); | |
3367 | return status; | |
3368 | } | |
3369 | ||
1da177e4 LT |
3370 | /** |
3371 | * megaraid_mbox_display_scb - display SCB information, mostly debug purposes | |
a69b74d3 RD |
3372 | * @adapter : controller's soft state |
3373 | * @scb : SCB to be displayed | |
3374 | * @level : debug level for console print | |
1da177e4 LT |
3375 | * |
3376 | * Diplay information about the given SCB iff the current debug level is | |
a69b74d3 | 3377 | * verbose. |
1da177e4 LT |
3378 | */ |
3379 | static void | |
3380 | megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) | |
3381 | { | |
3382 | mbox_ccb_t *ccb; | |
3383 | struct scsi_cmnd *scp; | |
3384 | mbox_t *mbox; | |
3385 | int level; | |
3386 | int i; | |
3387 | ||
3388 | ||
3389 | ccb = (mbox_ccb_t *)scb->ccb; | |
3390 | scp = scb->scp; | |
3391 | mbox = ccb->mbox; | |
3392 | ||
3393 | level = CL_DLEVEL3; | |
3394 | ||
3395 | con_log(level, (KERN_NOTICE | |
3396 | "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, | |
3397 | mbox->cmd, scb->sno)); | |
3398 | ||
3399 | con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", | |
3400 | mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, | |
3401 | mbox->numsge)); | |
3402 | ||
3403 | if (!scp) return; | |
3404 | ||
3405 | con_log(level, (KERN_NOTICE "scsi cmnd: ")); | |
3406 | ||
3407 | for (i = 0; i < scp->cmd_len; i++) { | |
3408 | con_log(level, ("%#2.02x ", scp->cmnd[i])); | |
3409 | } | |
3410 | ||
3411 | con_log(level, ("\n")); | |
3412 | ||
3413 | return; | |
3414 | } | |
3415 | ||
3416 | ||
3417 | /** | |
3418 | * megaraid_mbox_setup_device_map - manage device ids | |
3419 | * @adapter : Driver's soft state | |
3420 | * | |
3948ff8b | 3421 | * Manage the device ids to have an appropriate mapping between the kernel |
1da177e4 LT |
3422 | * scsi addresses and megaraid scsi and logical drive addresses. We export |
3423 | * scsi devices on their actual addresses, whereas the logical drives are | |
3424 | * exported on a virtual scsi channel. | |
a69b74d3 | 3425 | */ |
1da177e4 LT |
3426 | static void |
3427 | megaraid_mbox_setup_device_map(adapter_t *adapter) | |
3428 | { | |
3429 | uint8_t c; | |
3430 | uint8_t t; | |
3431 | ||
3432 | /* | |
3433 | * First fill the values on the logical drive channel | |
3434 | */ | |
3435 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3436 | adapter->device_ids[adapter->max_channel][t] = | |
3437 | (t < adapter->init_id) ? t : t - 1; | |
3438 | ||
3439 | adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; | |
3440 | ||
3441 | /* | |
3442 | * Fill the values on the physical devices channels | |
3443 | */ | |
3444 | for (c = 0; c < adapter->max_channel; c++) | |
3445 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3446 | adapter->device_ids[c][t] = (c << 8) | t; | |
3447 | } | |
3448 | ||
3449 | ||
3450 | /* | |
3451 | * END: internal commands library | |
3452 | */ | |
3453 | ||
3454 | /* | |
3455 | * START: Interface for the common management module | |
3456 | * | |
b1c11812 | 3457 | * This is the module, which interfaces with the common management module to |
1da177e4 LT |
3458 | * provide support for ioctl and sysfs |
3459 | */ | |
3460 | ||
3461 | /** | |
b1c11812 | 3462 | * megaraid_cmm_register - register with the management module |
a69b74d3 | 3463 | * @adapter : HBA soft state |
1da177e4 LT |
3464 | * |
3465 | * Register with the management module, which allows applications to issue | |
3466 | * ioctl calls to the drivers. This interface is used by the management module | |
3467 | * to setup sysfs support as well. | |
3468 | */ | |
3469 | static int | |
3470 | megaraid_cmm_register(adapter_t *adapter) | |
3471 | { | |
3472 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3473 | mraid_mmadp_t adp; | |
3474 | scb_t *scb; | |
3475 | mbox_ccb_t *ccb; | |
3476 | int rval; | |
3477 | int i; | |
3478 | ||
3479 | // Allocate memory for the base list of scb for management module. | |
dd00cc48 | 3480 | adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL); |
1da177e4 LT |
3481 | |
3482 | if (adapter->uscb_list == NULL) { | |
3483 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 3484 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
3485 | __LINE__)); |
3486 | return -1; | |
3487 | } | |
1da177e4 LT |
3488 | |
3489 | ||
3490 | // Initialize the synchronization parameters for resources for | |
3491 | // commands for management module | |
3492 | INIT_LIST_HEAD(&adapter->uscb_pool); | |
3493 | ||
3494 | spin_lock_init(USER_FREE_LIST_LOCK(adapter)); | |
3495 | ||
3496 | ||
3497 | ||
3498 | // link all the packets. Note, CCB for commands, coming from the | |
3499 | // commom management module, mailbox physical address are already | |
3500 | // setup by it. We just need placeholder for that in our local command | |
3501 | // control blocks | |
3502 | for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { | |
3503 | ||
3504 | scb = adapter->uscb_list + i; | |
3505 | ccb = raid_dev->uccb_list + i; | |
3506 | ||
3507 | scb->ccb = (caddr_t)ccb; | |
3508 | ccb->mbox64 = raid_dev->umbox64 + i; | |
3509 | ccb->mbox = &ccb->mbox64->mbox32; | |
3510 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
3511 | ||
3512 | scb->gp = 0; | |
3513 | ||
3514 | // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR | |
3515 | // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) | |
3516 | scb->sno = i + MBOX_MAX_SCSI_CMDS; | |
3517 | ||
3518 | scb->scp = NULL; | |
3519 | scb->state = SCB_FREE; | |
3520 | scb->dma_direction = PCI_DMA_NONE; | |
3521 | scb->dma_type = MRAID_DMA_NONE; | |
3522 | scb->dev_channel = -1; | |
3523 | scb->dev_target = -1; | |
3524 | ||
3525 | // put scb in the free pool | |
3526 | list_add_tail(&scb->list, &adapter->uscb_pool); | |
3527 | } | |
3528 | ||
3529 | adp.unique_id = adapter->unique_id; | |
3530 | adp.drvr_type = DRVRTYPE_MBOX; | |
3531 | adp.drvr_data = (unsigned long)adapter; | |
3532 | adp.pdev = adapter->pdev; | |
3533 | adp.issue_uioc = megaraid_mbox_mm_handler; | |
c005fb4f | 3534 | adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
1da177e4 LT |
3535 | adp.max_kioc = MBOX_MAX_USER_CMDS; |
3536 | ||
3537 | if ((rval = mraid_mm_register_adp(&adp)) != 0) { | |
3538 | ||
3539 | con_log(CL_ANN, (KERN_WARNING | |
3540 | "megaraid mbox: did not register with CMM\n")); | |
3541 | ||
3542 | kfree(adapter->uscb_list); | |
3543 | } | |
3544 | ||
3545 | return rval; | |
3546 | } | |
3547 | ||
3548 | ||
3549 | /** | |
b1c11812 | 3550 | * megaraid_cmm_unregister - un-register with the management module |
a69b74d3 | 3551 | * @adapter : HBA soft state |
1da177e4 LT |
3552 | * |
3553 | * Un-register with the management module. | |
3554 | * FIXME: mgmt module must return failure for unregister if it has pending | |
a69b74d3 | 3555 | * commands in LLD. |
1da177e4 LT |
3556 | */ |
3557 | static int | |
3558 | megaraid_cmm_unregister(adapter_t *adapter) | |
3559 | { | |
3560 | kfree(adapter->uscb_list); | |
3561 | mraid_mm_unregister_adp(adapter->unique_id); | |
3562 | return 0; | |
3563 | } | |
3564 | ||
3565 | ||
3566 | /** | |
3567 | * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD | |
a69b74d3 RD |
3568 | * @drvr_data : LLD specific data |
3569 | * @kioc : CMM interface packet | |
3570 | * @action : command action | |
1da177e4 | 3571 | * |
b1c11812 | 3572 | * This routine is invoked whenever the Common Management Module (CMM) has a |
1da177e4 LT |
3573 | * command for us. The 'action' parameter specifies if this is a new command |
3574 | * or otherwise. | |
3575 | */ | |
3576 | static int | |
3577 | megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) | |
3578 | { | |
3579 | adapter_t *adapter; | |
3580 | ||
3581 | if (action != IOCTL_ISSUE) { | |
3582 | con_log(CL_ANN, (KERN_WARNING | |
3583 | "megaraid: unsupported management action:%#2x\n", | |
3584 | action)); | |
3585 | return (-ENOTSUPP); | |
3586 | } | |
3587 | ||
3588 | adapter = (adapter_t *)drvr_data; | |
3589 | ||
3590 | // make sure this adapter is not being detached right now. | |
3591 | if (atomic_read(&adapter->being_detached)) { | |
3592 | con_log(CL_ANN, (KERN_WARNING | |
3593 | "megaraid: reject management request, detaching\n")); | |
3594 | return (-ENODEV); | |
3595 | } | |
3596 | ||
3597 | switch (kioc->opcode) { | |
3598 | ||
3599 | case GET_ADAP_INFO: | |
3600 | ||
3601 | kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) | |
3602 | (unsigned long)kioc->buf_vaddr); | |
3603 | ||
3604 | kioc->done(kioc); | |
3605 | ||
3606 | return kioc->status; | |
3607 | ||
3608 | case MBOX_CMD: | |
3609 | ||
3610 | return megaraid_mbox_mm_command(adapter, kioc); | |
3611 | ||
3612 | default: | |
3613 | kioc->status = (-EINVAL); | |
3614 | kioc->done(kioc); | |
3615 | return (-EINVAL); | |
3616 | } | |
3617 | ||
3618 | return 0; // not reached | |
3619 | } | |
3620 | ||
3621 | /** | |
3622 | * megaraid_mbox_mm_command - issues commands routed through CMM | |
a69b74d3 RD |
3623 | * @adapter : HBA soft state |
3624 | * @kioc : management command packet | |
1da177e4 LT |
3625 | * |
3626 | * Issues commands, which are routed through the management module. | |
3627 | */ | |
3628 | static int | |
3629 | megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) | |
3630 | { | |
3631 | struct list_head *head = &adapter->uscb_pool; | |
3632 | mbox64_t *mbox64; | |
3633 | uint8_t *raw_mbox; | |
3634 | scb_t *scb; | |
3635 | mbox_ccb_t *ccb; | |
3636 | unsigned long flags; | |
3637 | ||
3638 | // detach one scb from free pool | |
3639 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3640 | ||
3641 | if (list_empty(head)) { // should never happen because of CMM | |
3642 | ||
3643 | con_log(CL_ANN, (KERN_WARNING | |
3644 | "megaraid mbox: bug in cmm handler, lost resources\n")); | |
3645 | ||
3646 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3647 | ||
3648 | return (-EINVAL); | |
3649 | } | |
3650 | ||
3651 | scb = list_entry(head->next, scb_t, list); | |
3652 | list_del_init(&scb->list); | |
3653 | ||
3654 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3655 | ||
3656 | scb->state = SCB_ACTIVE; | |
3657 | scb->dma_type = MRAID_DMA_NONE; | |
3658 | scb->dma_direction = PCI_DMA_NONE; | |
3659 | ||
3660 | ccb = (mbox_ccb_t *)scb->ccb; | |
3661 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
3662 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3663 | ||
3664 | memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); | |
3665 | ||
3666 | scb->gp = (unsigned long)kioc; | |
3667 | ||
3668 | /* | |
3669 | * If it is a logdrv random delete operation, we have to wait till | |
3670 | * there are no outstanding cmds at the fw and then issue it directly | |
3671 | */ | |
3672 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3673 | ||
3674 | if (wait_till_fw_empty(adapter)) { | |
3675 | con_log(CL_ANN, (KERN_NOTICE | |
3676 | "megaraid mbox: LD delete, timed out\n")); | |
3677 | ||
3678 | kioc->status = -ETIME; | |
3679 | ||
3680 | scb->status = -1; | |
3681 | ||
3682 | megaraid_mbox_mm_done(adapter, scb); | |
3683 | ||
3684 | return (-ETIME); | |
3685 | } | |
3686 | ||
3687 | INIT_LIST_HEAD(&scb->list); | |
3688 | ||
3689 | scb->state = SCB_ISSUED; | |
3690 | if (mbox_post_cmd(adapter, scb) != 0) { | |
3691 | ||
3692 | con_log(CL_ANN, (KERN_NOTICE | |
3693 | "megaraid mbox: LD delete, mailbox busy\n")); | |
3694 | ||
3695 | kioc->status = -EBUSY; | |
3696 | ||
3697 | scb->status = -1; | |
3698 | ||
3699 | megaraid_mbox_mm_done(adapter, scb); | |
3700 | ||
3701 | return (-EBUSY); | |
3702 | } | |
3703 | ||
3704 | return 0; | |
3705 | } | |
3706 | ||
3707 | // put the command on the pending list and execute | |
3708 | megaraid_mbox_runpendq(adapter, scb); | |
3709 | ||
3710 | return 0; | |
3711 | } | |
3712 | ||
3713 | ||
3714 | static int | |
3715 | wait_till_fw_empty(adapter_t *adapter) | |
3716 | { | |
3717 | unsigned long flags = 0; | |
3718 | int i; | |
3719 | ||
3720 | ||
3721 | /* | |
3722 | * Set the quiescent flag to stop issuing cmds to FW. | |
3723 | */ | |
f2c8dc40 | 3724 | spin_lock_irqsave(&adapter->lock, flags); |
1da177e4 | 3725 | adapter->quiescent++; |
f2c8dc40 | 3726 | spin_unlock_irqrestore(&adapter->lock, flags); |
1da177e4 LT |
3727 | |
3728 | /* | |
3729 | * Wait till there are no more cmds outstanding at FW. Try for at most | |
3730 | * 60 seconds | |
3731 | */ | |
3732 | for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { | |
3733 | con_log(CL_DLEVEL1, (KERN_INFO | |
3734 | "megaraid: FW has %d pending commands\n", | |
3735 | adapter->outstanding_cmds)); | |
3736 | ||
3737 | msleep(1000); | |
3738 | } | |
3739 | ||
3740 | return adapter->outstanding_cmds; | |
3741 | } | |
3742 | ||
3743 | ||
3744 | /** | |
3745 | * megaraid_mbox_mm_done - callback for CMM commands | |
3746 | * @adapter : HBA soft state | |
3747 | * @scb : completed command | |
3748 | * | |
3749 | * Callback routine for internal commands originated from the management | |
3750 | * module. | |
3751 | */ | |
3752 | static void | |
3753 | megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) | |
3754 | { | |
3755 | uioc_t *kioc; | |
3756 | mbox64_t *mbox64; | |
3757 | uint8_t *raw_mbox; | |
3758 | unsigned long flags; | |
3759 | ||
3760 | kioc = (uioc_t *)scb->gp; | |
1da177e4 LT |
3761 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
3762 | mbox64->mbox32.status = scb->status; | |
3763 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3764 | ||
3765 | ||
3766 | // put scb in the free pool | |
3767 | scb->state = SCB_FREE; | |
3768 | scb->scp = NULL; | |
3769 | ||
3770 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3771 | ||
3772 | list_add(&scb->list, &adapter->uscb_pool); | |
3773 | ||
3774 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3775 | ||
3776 | // if a delete logical drive operation succeeded, restart the | |
3777 | // controller | |
3778 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3779 | ||
3780 | adapter->quiescent--; | |
3781 | ||
3782 | megaraid_mbox_runpendq(adapter, NULL); | |
3783 | } | |
3784 | ||
3785 | kioc->done(kioc); | |
3786 | ||
3787 | return; | |
3788 | } | |
3789 | ||
3790 | ||
3791 | /** | |
3792 | * gather_hbainfo - HBA characteristics for the applications | |
a69b74d3 RD |
3793 | * @adapter : HBA soft state |
3794 | * @hinfo : pointer to the caller's host info strucuture | |
1da177e4 LT |
3795 | */ |
3796 | static int | |
3797 | gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) | |
3798 | { | |
3799 | uint8_t dmajor; | |
3800 | ||
3801 | dmajor = megaraid_mbox_version[0]; | |
3802 | ||
3803 | hinfo->pci_vendor_id = adapter->pdev->vendor; | |
3804 | hinfo->pci_device_id = adapter->pdev->device; | |
3805 | hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; | |
3806 | hinfo->subsys_device_id = adapter->pdev->subsystem_device; | |
3807 | ||
3808 | hinfo->pci_bus = adapter->pdev->bus->number; | |
3809 | hinfo->pci_dev_fn = adapter->pdev->devfn; | |
3810 | hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); | |
3811 | hinfo->irq = adapter->host->irq; | |
3812 | hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; | |
3813 | ||
3814 | hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; | |
3815 | hinfo->host_no = adapter->host->host_no; | |
3816 | ||
3817 | return 0; | |
3818 | } | |
3819 | ||
3820 | /* | |
3821 | * END: Interface for the common management module | |
3822 | */ | |
3823 | ||
3824 | ||
3825 | ||
3826 | /** | |
3827 | * megaraid_sysfs_alloc_resources - allocate sysfs related resources | |
a69b74d3 | 3828 | * @adapter : controller's soft state |
1da177e4 LT |
3829 | * |
3830 | * Allocate packets required to issue FW calls whenever the sysfs attributes | |
3831 | * are read. These attributes would require up-to-date information from the | |
3832 | * FW. Also set up resources for mutual exclusion to share these resources and | |
3833 | * the wait queue. | |
3834 | * | |
a69b74d3 RD |
3835 | * Return 0 on success. |
3836 | * Return -ERROR_CODE on failure. | |
1da177e4 LT |
3837 | */ |
3838 | static int | |
3839 | megaraid_sysfs_alloc_resources(adapter_t *adapter) | |
3840 | { | |
3841 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3842 | int rval = 0; | |
3843 | ||
3844 | raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); | |
3845 | ||
3846 | raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); | |
3847 | ||
3848 | raid_dev->sysfs_buffer = pci_alloc_consistent(adapter->pdev, | |
3849 | PAGE_SIZE, &raid_dev->sysfs_buffer_dma); | |
3850 | ||
3851 | if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || | |
3852 | !raid_dev->sysfs_buffer) { | |
3853 | ||
3854 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 3855 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
3856 | __LINE__)); |
3857 | ||
3858 | rval = -ENOMEM; | |
3859 | ||
3860 | megaraid_sysfs_free_resources(adapter); | |
3861 | } | |
3862 | ||
0c2cc433 | 3863 | mutex_init(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3864 | |
3865 | init_waitqueue_head(&raid_dev->sysfs_wait_q); | |
3866 | ||
3867 | return rval; | |
3868 | } | |
3869 | ||
3870 | ||
3871 | /** | |
3872 | * megaraid_sysfs_free_resources - free sysfs related resources | |
a69b74d3 | 3873 | * @adapter : controller's soft state |
1da177e4 LT |
3874 | * |
3875 | * Free packets allocated for sysfs FW commands | |
1da177e4 LT |
3876 | */ |
3877 | static void | |
3878 | megaraid_sysfs_free_resources(adapter_t *adapter) | |
3879 | { | |
3880 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3881 | ||
c9475cb0 JJ |
3882 | kfree(raid_dev->sysfs_uioc); |
3883 | kfree(raid_dev->sysfs_mbox64); | |
1da177e4 LT |
3884 | |
3885 | if (raid_dev->sysfs_buffer) { | |
3886 | pci_free_consistent(adapter->pdev, PAGE_SIZE, | |
3887 | raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); | |
3888 | } | |
3889 | } | |
3890 | ||
3891 | ||
3892 | /** | |
3893 | * megaraid_sysfs_get_ldmap_done - callback for get ldmap | |
a69b74d3 | 3894 | * @uioc : completed packet |
1da177e4 LT |
3895 | * |
3896 | * Callback routine called in the ISR/tasklet context for get ldmap call | |
1da177e4 LT |
3897 | */ |
3898 | static void | |
3899 | megaraid_sysfs_get_ldmap_done(uioc_t *uioc) | |
3900 | { | |
3901 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
3902 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3903 | ||
3904 | uioc->status = 0; | |
3905 | ||
3906 | wake_up(&raid_dev->sysfs_wait_q); | |
3907 | } | |
3908 | ||
3909 | ||
3910 | /** | |
3911 | * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap | |
a69b74d3 | 3912 | * @data : timed out packet |
1da177e4 LT |
3913 | * |
3914 | * Timeout routine to recover and return to application, in case the adapter | |
a69b74d3 RD |
3915 | * has stopped responding. A timeout of 60 seconds for this command seems like |
3916 | * a good value. | |
1da177e4 LT |
3917 | */ |
3918 | static void | |
3919 | megaraid_sysfs_get_ldmap_timeout(unsigned long data) | |
3920 | { | |
3921 | uioc_t *uioc = (uioc_t *)data; | |
3922 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
3923 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3924 | ||
3925 | uioc->status = -ETIME; | |
3926 | ||
3927 | wake_up(&raid_dev->sysfs_wait_q); | |
3928 | } | |
3929 | ||
3930 | ||
3931 | /** | |
3932 | * megaraid_sysfs_get_ldmap - get update logical drive map | |
a69b74d3 | 3933 | * @adapter : controller's soft state |
1da177e4 LT |
3934 | * |
3935 | * This routine will be called whenever user reads the logical drive | |
3936 | * attributes, go get the current logical drive mapping table from the | |
b1c11812 | 3937 | * firmware. We use the management API's to issue commands to the controller. |
1da177e4 LT |
3938 | * |
3939 | * NOTE: The commands issuance functionality is not generalized and | |
3940 | * implemented in context of "get ld map" command only. If required, the | |
3941 | * command issuance logical can be trivially pulled out and implemented as a | |
25985edc | 3942 | * standalone library. For now, this should suffice since there is no other |
1da177e4 LT |
3943 | * user of this interface. |
3944 | * | |
a69b74d3 RD |
3945 | * Return 0 on success. |
3946 | * Return -1 on failure. | |
1da177e4 LT |
3947 | */ |
3948 | static int | |
3949 | megaraid_sysfs_get_ldmap(adapter_t *adapter) | |
3950 | { | |
3951 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3952 | uioc_t *uioc; | |
3953 | mbox64_t *mbox64; | |
3954 | mbox_t *mbox; | |
3955 | char *raw_mbox; | |
3956 | struct timer_list sysfs_timer; | |
3957 | struct timer_list *timerp; | |
3958 | caddr_t ldmap; | |
3959 | int rval = 0; | |
3960 | ||
3961 | /* | |
3962 | * Allow only one read at a time to go through the sysfs attributes | |
3963 | */ | |
0c2cc433 | 3964 | mutex_lock(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3965 | |
3966 | uioc = raid_dev->sysfs_uioc; | |
3967 | mbox64 = raid_dev->sysfs_mbox64; | |
3968 | ldmap = raid_dev->sysfs_buffer; | |
3969 | ||
3970 | memset(uioc, 0, sizeof(uioc_t)); | |
3971 | memset(mbox64, 0, sizeof(mbox64_t)); | |
3972 | memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); | |
3973 | ||
3974 | mbox = &mbox64->mbox32; | |
3975 | raw_mbox = (char *)mbox; | |
3976 | uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; | |
3977 | uioc->buf_vaddr = (caddr_t)adapter; | |
3978 | uioc->status = -ENODATA; | |
3979 | uioc->done = megaraid_sysfs_get_ldmap_done; | |
3980 | ||
3981 | /* | |
3982 | * Prepare the mailbox packet to get the current logical drive mapping | |
3983 | * table | |
3984 | */ | |
3985 | mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; | |
3986 | ||
3987 | raw_mbox[0] = FC_DEL_LOGDRV; | |
3988 | raw_mbox[2] = OP_GET_LDID_MAP; | |
3989 | ||
3990 | /* | |
3991 | * Setup a timer to recover from a non-responding controller | |
3992 | */ | |
3993 | timerp = &sysfs_timer; | |
3994 | init_timer(timerp); | |
3995 | ||
3996 | timerp->function = megaraid_sysfs_get_ldmap_timeout; | |
3997 | timerp->data = (unsigned long)uioc; | |
3998 | timerp->expires = jiffies + 60 * HZ; | |
3999 | ||
4000 | add_timer(timerp); | |
4001 | ||
4002 | /* | |
4003 | * Send the command to the firmware | |
4004 | */ | |
4005 | rval = megaraid_mbox_mm_command(adapter, uioc); | |
4006 | ||
4007 | if (rval == 0) { // command successfully issued | |
4008 | wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); | |
4009 | ||
4010 | /* | |
4011 | * Check if the command timed out | |
4012 | */ | |
4013 | if (uioc->status == -ETIME) { | |
4014 | con_log(CL_ANN, (KERN_NOTICE | |
4015 | "megaraid: sysfs get ld map timed out\n")); | |
4016 | ||
4017 | rval = -ETIME; | |
4018 | } | |
4019 | else { | |
4020 | rval = mbox->status; | |
4021 | } | |
4022 | ||
4023 | if (rval == 0) { | |
4024 | memcpy(raid_dev->curr_ldmap, ldmap, | |
4025 | sizeof(raid_dev->curr_ldmap)); | |
4026 | } | |
4027 | else { | |
4028 | con_log(CL_ANN, (KERN_NOTICE | |
4029 | "megaraid: get ld map failed with %x\n", rval)); | |
4030 | } | |
4031 | } | |
4032 | else { | |
4033 | con_log(CL_ANN, (KERN_NOTICE | |
4034 | "megaraid: could not issue ldmap command:%x\n", rval)); | |
4035 | } | |
4036 | ||
4037 | ||
4038 | del_timer_sync(timerp); | |
4039 | ||
0c2cc433 | 4040 | mutex_unlock(&raid_dev->sysfs_mtx); |
1da177e4 LT |
4041 | |
4042 | return rval; | |
4043 | } | |
4044 | ||
4045 | ||
4046 | /** | |
4047 | * megaraid_sysfs_show_app_hndl - display application handle for this adapter | |
a69b74d3 RD |
4048 | * @cdev : class device object representation for the host |
4049 | * @buf : buffer to send data to | |
1da177e4 LT |
4050 | * |
4051 | * Display the handle used by the applications while executing management | |
4052 | * tasks on the adapter. We invoke a management module API to get the adapter | |
4053 | * handle, since we do not interface with applications directly. | |
1da177e4 LT |
4054 | */ |
4055 | static ssize_t | |
ee959b00 TJ |
4056 | megaraid_sysfs_show_app_hndl(struct device *dev, struct device_attribute *attr, |
4057 | char *buf) | |
1da177e4 | 4058 | { |
ee959b00 | 4059 | struct Scsi_Host *shost = class_to_shost(dev); |
1da177e4 LT |
4060 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); |
4061 | uint32_t app_hndl; | |
4062 | ||
4063 | app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); | |
4064 | ||
4065 | return snprintf(buf, 8, "%u\n", app_hndl); | |
4066 | } | |
4067 | ||
4068 | ||
4069 | /** | |
4070 | * megaraid_sysfs_show_ldnum - display the logical drive number for this device | |
a69b74d3 RD |
4071 | * @dev : device object representation for the scsi device |
4072 | * @attr : device attribute to show | |
4073 | * @buf : buffer to send data to | |
1da177e4 LT |
4074 | * |
4075 | * Display the logical drive number for the device in question, if it a valid | |
a69b74d3 RD |
4076 | * logical drive. For physical devices, "-1" is returned. |
4077 | * | |
4078 | * The logical drive number is displayed in following format: | |
1da177e4 LT |
4079 | * |
4080 | * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> | |
1da177e4 | 4081 | * |
a69b74d3 | 4082 | * <int> <int> <int> <int> |
1da177e4 LT |
4083 | */ |
4084 | static ssize_t | |
10523b3b | 4085 | megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4086 | { |
4087 | struct scsi_device *sdev = to_scsi_device(dev); | |
4088 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); | |
4089 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4090 | int scsi_id = -1; | |
4091 | int logical_drv = -1; | |
4092 | int ldid_map = -1; | |
4093 | uint32_t app_hndl = 0; | |
4094 | int mapped_sdev_id; | |
4095 | int rval; | |
4096 | int i; | |
4097 | ||
4098 | if (raid_dev->random_del_supported && | |
4099 | MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { | |
4100 | ||
4101 | rval = megaraid_sysfs_get_ldmap(adapter); | |
4102 | if (rval == 0) { | |
4103 | ||
4104 | for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { | |
4105 | ||
4106 | mapped_sdev_id = sdev->id; | |
4107 | ||
4108 | if (sdev->id > adapter->init_id) { | |
4109 | mapped_sdev_id -= 1; | |
4110 | } | |
4111 | ||
4112 | if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { | |
4113 | ||
4114 | scsi_id = sdev->id; | |
4115 | ||
4116 | logical_drv = i; | |
4117 | ||
4118 | ldid_map = raid_dev->curr_ldmap[i]; | |
4119 | ||
4120 | app_hndl = mraid_mm_adapter_app_handle( | |
4121 | adapter->unique_id); | |
4122 | ||
4123 | break; | |
4124 | } | |
4125 | } | |
4126 | } | |
4127 | else { | |
4128 | con_log(CL_ANN, (KERN_NOTICE | |
4129 | "megaraid: sysfs get ld map failed: %x\n", | |
4130 | rval)); | |
4131 | } | |
4132 | } | |
4133 | ||
4134 | return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, | |
4135 | ldid_map, app_hndl); | |
4136 | } | |
4137 | ||
4138 | ||
4139 | /* | |
4140 | * END: Mailbox Low Level Driver | |
4141 | */ | |
4142 | module_init(megaraid_init); | |
4143 | module_exit(megaraid_exit); | |
4144 | ||
4145 | /* vim: set ts=8 sw=8 tw=78 ai si: */ |