Commit | Line | Data |
---|---|---|
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 | ||
1da177e4 LT |
204 | /* |
205 | * PCI table for all supported controllers. | |
206 | */ | |
207 | static struct pci_device_id pci_id_table_g[] = { | |
208 | { | |
209 | PCI_VENDOR_ID_DELL, | |
210 | PCI_DEVICE_ID_PERC4_DI_DISCOVERY, | |
211 | PCI_VENDOR_ID_DELL, | |
212 | PCI_SUBSYS_ID_PERC4_DI_DISCOVERY, | |
213 | }, | |
214 | { | |
215 | PCI_VENDOR_ID_LSI_LOGIC, | |
216 | PCI_DEVICE_ID_PERC4_SC, | |
217 | PCI_VENDOR_ID_DELL, | |
218 | PCI_SUBSYS_ID_PERC4_SC, | |
219 | }, | |
220 | { | |
221 | PCI_VENDOR_ID_LSI_LOGIC, | |
222 | PCI_DEVICE_ID_PERC4_DC, | |
223 | PCI_VENDOR_ID_DELL, | |
224 | PCI_SUBSYS_ID_PERC4_DC, | |
225 | }, | |
226 | { | |
227 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
228 | PCI_DEVICE_ID_VERDE, |
229 | PCI_ANY_ID, | |
230 | PCI_ANY_ID, | |
1da177e4 LT |
231 | }, |
232 | { | |
233 | PCI_VENDOR_ID_DELL, | |
234 | PCI_DEVICE_ID_PERC4_DI_EVERGLADES, | |
235 | PCI_VENDOR_ID_DELL, | |
236 | PCI_SUBSYS_ID_PERC4_DI_EVERGLADES, | |
237 | }, | |
238 | { | |
239 | PCI_VENDOR_ID_DELL, | |
240 | PCI_DEVICE_ID_PERC4E_SI_BIGBEND, | |
241 | PCI_VENDOR_ID_DELL, | |
242 | PCI_SUBSYS_ID_PERC4E_SI_BIGBEND, | |
243 | }, | |
244 | { | |
245 | PCI_VENDOR_ID_DELL, | |
246 | PCI_DEVICE_ID_PERC4E_DI_KOBUK, | |
247 | PCI_VENDOR_ID_DELL, | |
248 | PCI_SUBSYS_ID_PERC4E_DI_KOBUK, | |
249 | }, | |
250 | { | |
251 | PCI_VENDOR_ID_DELL, | |
252 | PCI_DEVICE_ID_PERC4E_DI_CORVETTE, | |
253 | PCI_VENDOR_ID_DELL, | |
254 | PCI_SUBSYS_ID_PERC4E_DI_CORVETTE, | |
255 | }, | |
256 | { | |
257 | PCI_VENDOR_ID_DELL, | |
258 | PCI_DEVICE_ID_PERC4E_DI_EXPEDITION, | |
259 | PCI_VENDOR_ID_DELL, | |
260 | PCI_SUBSYS_ID_PERC4E_DI_EXPEDITION, | |
261 | }, | |
262 | { | |
263 | PCI_VENDOR_ID_DELL, | |
264 | PCI_DEVICE_ID_PERC4E_DI_GUADALUPE, | |
265 | PCI_VENDOR_ID_DELL, | |
266 | PCI_SUBSYS_ID_PERC4E_DI_GUADALUPE, | |
267 | }, | |
268 | { | |
269 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
270 | PCI_DEVICE_ID_DOBSON, |
271 | PCI_ANY_ID, | |
272 | PCI_ANY_ID, | |
1da177e4 LT |
273 | }, |
274 | { | |
275 | PCI_VENDOR_ID_AMI, | |
276 | PCI_DEVICE_ID_AMI_MEGARAID3, | |
ed7e8ef7 JS |
277 | PCI_ANY_ID, |
278 | PCI_ANY_ID, | |
1da177e4 LT |
279 | }, |
280 | { | |
281 | PCI_VENDOR_ID_LSI_LOGIC, | |
ed7e8ef7 JS |
282 | PCI_DEVICE_ID_AMI_MEGARAID3, |
283 | PCI_ANY_ID, | |
284 | PCI_ANY_ID, | |
1da177e4 LT |
285 | }, |
286 | { | |
287 | PCI_VENDOR_ID_LSI_LOGIC, | |
672b2d38 JS |
288 | PCI_DEVICE_ID_LINDSAY, |
289 | PCI_ANY_ID, | |
290 | PCI_ANY_ID, | |
1da177e4 | 291 | }, |
1da177e4 LT |
292 | {0} /* Terminating entry */ |
293 | }; | |
294 | MODULE_DEVICE_TABLE(pci, pci_id_table_g); | |
295 | ||
296 | ||
382db811 | 297 | static struct pci_driver megaraid_pci_driver = { |
1da177e4 LT |
298 | .name = "megaraid", |
299 | .id_table = pci_id_table_g, | |
300 | .probe = megaraid_probe_one, | |
6f039790 | 301 | .remove = megaraid_detach_one, |
5457b6a6 | 302 | .shutdown = megaraid_mbox_shutdown, |
1da177e4 LT |
303 | }; |
304 | ||
305 | ||
306 | ||
307 | // definitions for the device attributes for exporting logical drive number | |
308 | // for a scsi address (Host, Channel, Id, Lun) | |
309 | ||
ee959b00 | 310 | DEVICE_ATTR(megaraid_mbox_app_hndl, S_IRUSR, megaraid_sysfs_show_app_hndl, |
1da177e4 LT |
311 | NULL); |
312 | ||
313 | // Host template initializer for megaraid mbox sysfs device attributes | |
ee959b00 TJ |
314 | static struct device_attribute *megaraid_shost_attrs[] = { |
315 | &dev_attr_megaraid_mbox_app_hndl, | |
1da177e4 LT |
316 | NULL, |
317 | }; | |
318 | ||
319 | ||
320 | DEVICE_ATTR(megaraid_mbox_ld, S_IRUSR, megaraid_sysfs_show_ldnum, NULL); | |
321 | ||
322 | // Host template initializer for megaraid mbox sysfs device attributes | |
323 | static struct device_attribute *megaraid_sdev_attrs[] = { | |
324 | &dev_attr_megaraid_mbox_ld, | |
325 | NULL, | |
326 | }; | |
327 | ||
1da177e4 LT |
328 | /* |
329 | * Scsi host template for megaraid unified driver | |
330 | */ | |
331 | static struct scsi_host_template megaraid_template_g = { | |
332 | .module = THIS_MODULE, | |
333 | .name = "LSI Logic MegaRAID driver", | |
334 | .proc_name = "megaraid", | |
335 | .queuecommand = megaraid_queue_command, | |
336 | .eh_abort_handler = megaraid_abort_handler, | |
1da177e4 | 337 | .eh_host_reset_handler = megaraid_reset_handler, |
db5ed4df | 338 | .change_queue_depth = scsi_change_queue_depth, |
54b2b50c | 339 | .no_write_same = 1, |
1da177e4 LT |
340 | .sdev_attrs = megaraid_sdev_attrs, |
341 | .shost_attrs = megaraid_shost_attrs, | |
342 | }; | |
343 | ||
344 | ||
345 | /** | |
346 | * megaraid_init - module load hook | |
347 | * | |
348 | * We register ourselves as hotplug enabled module and let PCI subsystem | |
a69b74d3 RD |
349 | * discover our adapters. |
350 | */ | |
1da177e4 LT |
351 | static int __init |
352 | megaraid_init(void) | |
353 | { | |
354 | int rval; | |
355 | ||
356 | // Announce the driver version | |
357 | con_log(CL_ANN, (KERN_INFO "megaraid: %s %s\n", MEGARAID_VERSION, | |
358 | MEGARAID_EXT_VERSION)); | |
359 | ||
360 | // check validity of module parameters | |
361 | if (megaraid_cmd_per_lun > MBOX_MAX_SCSI_CMDS) { | |
362 | ||
363 | con_log(CL_ANN, (KERN_WARNING | |
364 | "megaraid mailbox: max commands per lun reset to %d\n", | |
365 | MBOX_MAX_SCSI_CMDS)); | |
366 | ||
367 | megaraid_cmd_per_lun = MBOX_MAX_SCSI_CMDS; | |
368 | } | |
369 | ||
370 | ||
371 | // register as a PCI hot-plug driver module | |
382db811 | 372 | rval = pci_register_driver(&megaraid_pci_driver); |
672b2d38 | 373 | if (rval < 0) { |
1da177e4 LT |
374 | con_log(CL_ANN, (KERN_WARNING |
375 | "megaraid: could not register hotplug support.\n")); | |
376 | } | |
377 | ||
378 | return rval; | |
379 | } | |
380 | ||
381 | ||
382 | /** | |
383 | * megaraid_exit - driver unload entry point | |
384 | * | |
a69b74d3 | 385 | * We simply unwrap the megaraid_init routine here. |
1da177e4 LT |
386 | */ |
387 | static void __exit | |
388 | megaraid_exit(void) | |
389 | { | |
390 | con_log(CL_DLEVEL1, (KERN_NOTICE "megaraid: unloading framework\n")); | |
391 | ||
392 | // unregister as PCI hotplug driver | |
382db811 | 393 | pci_unregister_driver(&megaraid_pci_driver); |
1da177e4 LT |
394 | |
395 | return; | |
396 | } | |
397 | ||
398 | ||
399 | /** | |
400 | * megaraid_probe_one - PCI hotplug entry point | |
a69b74d3 RD |
401 | * @pdev : handle to this controller's PCI configuration space |
402 | * @id : pci device id of the class of controllers | |
1da177e4 LT |
403 | * |
404 | * This routine should be called whenever a new adapter is detected by the | |
3a4fa0a2 | 405 | * PCI hotplug susbsystem. |
a69b74d3 | 406 | */ |
6f039790 | 407 | static int |
1da177e4 LT |
408 | megaraid_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
409 | { | |
410 | adapter_t *adapter; | |
411 | ||
412 | ||
413 | // detected a new controller | |
414 | con_log(CL_ANN, (KERN_INFO | |
415 | "megaraid: probe new device %#4.04x:%#4.04x:%#4.04x:%#4.04x: ", | |
416 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
417 | pdev->subsystem_device)); | |
418 | ||
419 | con_log(CL_ANN, ("bus %d:slot %d:func %d\n", pdev->bus->number, | |
420 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn))); | |
421 | ||
422 | if (pci_enable_device(pdev)) { | |
423 | con_log(CL_ANN, (KERN_WARNING | |
424 | "megaraid: pci_enable_device failed\n")); | |
425 | ||
426 | return -ENODEV; | |
427 | } | |
428 | ||
429 | // Enable bus-mastering on this controller | |
430 | pci_set_master(pdev); | |
431 | ||
432 | // Allocate the per driver initialization structure | |
dd00cc48 | 433 | adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL); |
1da177e4 LT |
434 | |
435 | if (adapter == NULL) { | |
436 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 437 | "megaraid: out of memory, %s %d.\n", __func__, __LINE__)); |
1da177e4 LT |
438 | |
439 | goto out_probe_one; | |
440 | } | |
1da177e4 LT |
441 | |
442 | ||
443 | // set up PCI related soft state and other pre-known parameters | |
444 | adapter->unique_id = pdev->bus->number << 8 | pdev->devfn; | |
445 | adapter->irq = pdev->irq; | |
446 | adapter->pdev = pdev; | |
447 | ||
448 | atomic_set(&adapter->being_detached, 0); | |
449 | ||
450 | // Setup the default DMA mask. This would be changed later on | |
451 | // depending on hardware capabilities | |
66e3a241 | 452 | if (dma_set_mask(&adapter->pdev->dev, DMA_BIT_MASK(32))) { |
1da177e4 | 453 | con_log(CL_ANN, (KERN_WARNING |
66e3a241 | 454 | "megaraid: dma_set_mask failed:%d\n", __LINE__)); |
1da177e4 LT |
455 | |
456 | goto out_free_adapter; | |
457 | } | |
458 | ||
459 | ||
460 | // Initialize the synchronization lock for kernel and LLD | |
461 | spin_lock_init(&adapter->lock); | |
1da177e4 LT |
462 | |
463 | // Initialize the command queues: the list of free SCBs and the list | |
464 | // of pending SCBs. | |
465 | INIT_LIST_HEAD(&adapter->kscb_pool); | |
466 | spin_lock_init(SCSI_FREE_LIST_LOCK(adapter)); | |
467 | ||
468 | INIT_LIST_HEAD(&adapter->pend_list); | |
469 | spin_lock_init(PENDING_LIST_LOCK(adapter)); | |
470 | ||
471 | INIT_LIST_HEAD(&adapter->completed_list); | |
472 | spin_lock_init(COMPLETED_LIST_LOCK(adapter)); | |
473 | ||
474 | ||
475 | // Start the mailbox based controller | |
476 | if (megaraid_init_mbox(adapter) != 0) { | |
477 | con_log(CL_ANN, (KERN_WARNING | |
6868aa76 | 478 | "megaraid: mailbox adapter did not initialize\n")); |
1da177e4 LT |
479 | |
480 | goto out_free_adapter; | |
481 | } | |
482 | ||
483 | // Register with LSI Common Management Module | |
484 | if (megaraid_cmm_register(adapter) != 0) { | |
485 | ||
486 | con_log(CL_ANN, (KERN_WARNING | |
487 | "megaraid: could not register with management module\n")); | |
488 | ||
489 | goto out_fini_mbox; | |
490 | } | |
491 | ||
492 | // setup adapter handle in PCI soft state | |
493 | pci_set_drvdata(pdev, adapter); | |
494 | ||
495 | // attach with scsi mid-layer | |
496 | if (megaraid_io_attach(adapter) != 0) { | |
497 | ||
498 | con_log(CL_ANN, (KERN_WARNING "megaraid: io attach failed\n")); | |
499 | ||
500 | goto out_cmm_unreg; | |
501 | } | |
502 | ||
503 | return 0; | |
504 | ||
505 | out_cmm_unreg: | |
1da177e4 LT |
506 | megaraid_cmm_unregister(adapter); |
507 | out_fini_mbox: | |
508 | megaraid_fini_mbox(adapter); | |
509 | out_free_adapter: | |
510 | kfree(adapter); | |
511 | out_probe_one: | |
512 | pci_disable_device(pdev); | |
513 | ||
514 | return -ENODEV; | |
515 | } | |
516 | ||
517 | ||
518 | /** | |
a69b74d3 | 519 | * megaraid_detach_one - release framework resources and call LLD release routine |
3948ff8b | 520 | * @pdev : handle for our PCI configuration space |
1da177e4 LT |
521 | * |
522 | * This routine is called during driver unload. We free all the allocated | |
523 | * resources and call the corresponding LLD so that it can also release all | |
524 | * its resources. | |
525 | * | |
a69b74d3 RD |
526 | * This routine is also called from the PCI hotplug system. |
527 | */ | |
1da177e4 LT |
528 | static void |
529 | megaraid_detach_one(struct pci_dev *pdev) | |
530 | { | |
531 | adapter_t *adapter; | |
532 | struct Scsi_Host *host; | |
533 | ||
534 | ||
535 | // Start a rollback on this adapter | |
536 | adapter = pci_get_drvdata(pdev); | |
537 | ||
538 | if (!adapter) { | |
539 | con_log(CL_ANN, (KERN_CRIT | |
540 | "megaraid: Invalid detach on %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
541 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
542 | pdev->subsystem_device)); | |
543 | ||
544 | return; | |
545 | } | |
546 | else { | |
547 | con_log(CL_ANN, (KERN_NOTICE | |
548 | "megaraid: detaching device %#4.04x:%#4.04x:%#4.04x:%#4.04x\n", | |
549 | pdev->vendor, pdev->device, pdev->subsystem_vendor, | |
550 | pdev->subsystem_device)); | |
551 | } | |
552 | ||
553 | ||
554 | host = adapter->host; | |
555 | ||
556 | // do not allow any more requests from the management module for this | |
557 | // adapter. | |
558 | // FIXME: How do we account for the request which might still be | |
559 | // pending with us? | |
560 | atomic_set(&adapter->being_detached, 1); | |
561 | ||
562 | // detach from the IO sub-system | |
563 | megaraid_io_detach(adapter); | |
564 | ||
1da177e4 LT |
565 | // Unregister from common management module |
566 | // | |
567 | // FIXME: this must return success or failure for conditions if there | |
568 | // is a command pending with LLD or not. | |
569 | megaraid_cmm_unregister(adapter); | |
570 | ||
571 | // finalize the mailbox based controller and release all resources | |
572 | megaraid_fini_mbox(adapter); | |
573 | ||
574 | kfree(adapter); | |
575 | ||
576 | scsi_host_put(host); | |
577 | ||
578 | pci_disable_device(pdev); | |
579 | ||
580 | return; | |
581 | } | |
582 | ||
583 | ||
584 | /** | |
585 | * megaraid_mbox_shutdown - PCI shutdown for megaraid HBA | |
a69b74d3 | 586 | * @pdev : generic driver model device |
1da177e4 | 587 | * |
a69b74d3 | 588 | * Shutdown notification, perform flush cache. |
1da177e4 LT |
589 | */ |
590 | static void | |
5457b6a6 | 591 | megaraid_mbox_shutdown(struct pci_dev *pdev) |
1da177e4 | 592 | { |
5457b6a6 | 593 | adapter_t *adapter = pci_get_drvdata(pdev); |
1da177e4 LT |
594 | static int counter; |
595 | ||
596 | if (!adapter) { | |
597 | con_log(CL_ANN, (KERN_WARNING | |
598 | "megaraid: null device in shutdown\n")); | |
599 | return; | |
600 | } | |
601 | ||
602 | // flush caches now | |
603 | con_log(CL_ANN, (KERN_INFO "megaraid: flushing adapter %d...", | |
604 | counter++)); | |
605 | ||
606 | megaraid_mbox_flush_cache(adapter); | |
607 | ||
608 | con_log(CL_ANN, ("done\n")); | |
609 | } | |
610 | ||
611 | ||
612 | /** | |
613 | * megaraid_io_attach - attach a device with the IO subsystem | |
a69b74d3 | 614 | * @adapter : controller's soft state |
1da177e4 | 615 | * |
a69b74d3 RD |
616 | * Attach this device with the IO subsystem. |
617 | */ | |
1da177e4 LT |
618 | static int |
619 | megaraid_io_attach(adapter_t *adapter) | |
620 | { | |
621 | struct Scsi_Host *host; | |
622 | ||
623 | // Initialize SCSI Host structure | |
624 | host = scsi_host_alloc(&megaraid_template_g, 8); | |
625 | if (!host) { | |
626 | con_log(CL_ANN, (KERN_WARNING | |
627 | "megaraid mbox: scsi_register failed\n")); | |
628 | ||
629 | return -1; | |
630 | } | |
631 | ||
632 | SCSIHOST2ADAP(host) = (caddr_t)adapter; | |
633 | adapter->host = host; | |
634 | ||
1da177e4 LT |
635 | host->irq = adapter->irq; |
636 | host->unique_id = adapter->unique_id; | |
637 | host->can_queue = adapter->max_cmds; | |
638 | host->this_id = adapter->init_id; | |
639 | host->sg_tablesize = adapter->sglen; | |
640 | host->max_sectors = adapter->max_sectors; | |
641 | host->cmd_per_lun = adapter->cmd_per_lun; | |
642 | host->max_channel = adapter->max_channel; | |
643 | host->max_id = adapter->max_target; | |
644 | host->max_lun = adapter->max_lun; | |
645 | ||
646 | ||
647 | // notify mid-layer about the new controller | |
648 | if (scsi_add_host(host, &adapter->pdev->dev)) { | |
649 | ||
650 | con_log(CL_ANN, (KERN_WARNING | |
651 | "megaraid mbox: scsi_add_host failed\n")); | |
652 | ||
653 | scsi_host_put(host); | |
654 | ||
655 | return -1; | |
656 | } | |
657 | ||
658 | scsi_scan_host(host); | |
659 | ||
660 | return 0; | |
661 | } | |
662 | ||
663 | ||
664 | /** | |
665 | * megaraid_io_detach - detach a device from the IO subsystem | |
a69b74d3 | 666 | * @adapter : controller's soft state |
1da177e4 | 667 | * |
a69b74d3 RD |
668 | * Detach this device from the IO subsystem. |
669 | */ | |
1da177e4 LT |
670 | static void |
671 | megaraid_io_detach(adapter_t *adapter) | |
672 | { | |
673 | struct Scsi_Host *host; | |
674 | ||
675 | con_log(CL_DLEVEL1, (KERN_INFO "megaraid: io detach\n")); | |
676 | ||
677 | host = adapter->host; | |
678 | ||
679 | scsi_remove_host(host); | |
680 | ||
681 | return; | |
682 | } | |
683 | ||
684 | ||
685 | /* | |
686 | * START: Mailbox Low Level Driver | |
687 | * | |
688 | * This is section specific to the single mailbox based controllers | |
689 | */ | |
690 | ||
691 | /** | |
692 | * megaraid_init_mbox - initialize controller | |
a69b74d3 | 693 | * @adapter : our soft state |
1da177e4 | 694 | * |
a69b74d3 RD |
695 | * - Allocate 16-byte aligned mailbox memory for firmware handshake |
696 | * - Allocate controller's memory resources | |
697 | * - Find out all initialization data | |
698 | * - Allocate memory required for all the commands | |
699 | * - Use internal library of FW routines, build up complete soft state | |
1da177e4 | 700 | */ |
6f039790 | 701 | static int |
1da177e4 LT |
702 | megaraid_init_mbox(adapter_t *adapter) |
703 | { | |
704 | struct pci_dev *pdev; | |
705 | mraid_device_t *raid_dev; | |
706 | int i; | |
fbf60802 | 707 | uint32_t magic64; |
1da177e4 LT |
708 | |
709 | ||
710 | adapter->ito = MBOX_TIMEOUT; | |
711 | pdev = adapter->pdev; | |
712 | ||
713 | /* | |
714 | * Allocate and initialize the init data structure for mailbox | |
715 | * controllers | |
716 | */ | |
dd00cc48 | 717 | raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL); |
1da177e4 LT |
718 | if (raid_dev == NULL) return -1; |
719 | ||
1da177e4 LT |
720 | |
721 | /* | |
722 | * Attach the adapter soft state to raid device soft state | |
723 | */ | |
724 | adapter->raid_device = (caddr_t)raid_dev; | |
725 | raid_dev->fast_load = megaraid_fast_load; | |
726 | ||
727 | ||
728 | // our baseport | |
729 | raid_dev->baseport = pci_resource_start(pdev, 0); | |
730 | ||
731 | if (pci_request_regions(pdev, "MegaRAID: LSI Logic Corporation") != 0) { | |
732 | ||
733 | con_log(CL_ANN, (KERN_WARNING | |
734 | "megaraid: mem region busy\n")); | |
735 | ||
736 | goto out_free_raid_dev; | |
737 | } | |
738 | ||
739 | raid_dev->baseaddr = ioremap_nocache(raid_dev->baseport, 128); | |
740 | ||
741 | if (!raid_dev->baseaddr) { | |
742 | ||
743 | con_log(CL_ANN, (KERN_WARNING | |
744 | "megaraid: could not map hba memory\n") ); | |
745 | ||
746 | goto out_release_regions; | |
747 | } | |
748 | ||
cd96d96f SP |
749 | /* initialize the mutual exclusion lock for the mailbox */ |
750 | spin_lock_init(&raid_dev->mailbox_lock); | |
751 | ||
752 | /* allocate memory required for commands */ | |
753 | if (megaraid_alloc_cmd_packets(adapter) != 0) | |
754 | goto out_iounmap; | |
1da177e4 | 755 | |
cd96d96f SP |
756 | /* |
757 | * Issue SYNC cmd to flush the pending cmds in the adapter | |
758 | * and initialize its internal state | |
759 | */ | |
760 | ||
761 | if (megaraid_mbox_fire_sync_cmd(adapter)) | |
762 | con_log(CL_ANN, ("megaraid: sync cmd failed\n")); | |
763 | ||
764 | /* | |
765 | * Setup the rest of the soft state using the library of | |
766 | * FW routines | |
767 | */ | |
768 | ||
769 | /* request IRQ and register the interrupt service routine */ | |
1d6f359a | 770 | if (request_irq(adapter->irq, megaraid_isr, IRQF_SHARED, "megaraid", |
1da177e4 LT |
771 | adapter)) { |
772 | ||
773 | con_log(CL_ANN, (KERN_WARNING | |
774 | "megaraid: Couldn't register IRQ %d!\n", adapter->irq)); | |
cd96d96f | 775 | goto out_alloc_cmds; |
1da177e4 | 776 | |
1da177e4 LT |
777 | } |
778 | ||
779 | // Product info | |
cd96d96f SP |
780 | if (megaraid_mbox_product_info(adapter) != 0) |
781 | goto out_free_irq; | |
1da177e4 LT |
782 | |
783 | // Do we support extended CDBs | |
784 | adapter->max_cdb_sz = 10; | |
785 | if (megaraid_mbox_extended_cdb(adapter) == 0) { | |
786 | adapter->max_cdb_sz = 16; | |
787 | } | |
788 | ||
789 | /* | |
790 | * Do we support cluster environment, if we do, what is the initiator | |
791 | * id. | |
792 | * NOTE: In a non-cluster aware firmware environment, the LLD should | |
793 | * return 7 as initiator id. | |
794 | */ | |
795 | adapter->ha = 0; | |
796 | adapter->init_id = -1; | |
797 | if (megaraid_mbox_support_ha(adapter, &adapter->init_id) == 0) { | |
798 | adapter->ha = 1; | |
799 | } | |
800 | ||
801 | /* | |
802 | * Prepare the device ids array to have the mapping between the kernel | |
803 | * device address and megaraid device address. | |
804 | * We export the physical devices on their actual addresses. The | |
805 | * logical drives are exported on a virtual SCSI channel | |
806 | */ | |
807 | megaraid_mbox_setup_device_map(adapter); | |
808 | ||
809 | // If the firmware supports random deletion, update the device id map | |
810 | if (megaraid_mbox_support_random_del(adapter)) { | |
811 | ||
812 | // Change the logical drives numbers in device_ids array one | |
813 | // slot in device_ids is reserved for target id, that's why | |
814 | // "<=" below | |
815 | for (i = 0; i <= MAX_LOGICAL_DRIVES_40LD; i++) { | |
816 | adapter->device_ids[adapter->max_channel][i] += 0x80; | |
817 | } | |
818 | adapter->device_ids[adapter->max_channel][adapter->init_id] = | |
819 | 0xFF; | |
820 | ||
821 | raid_dev->random_del_supported = 1; | |
822 | } | |
823 | ||
824 | /* | |
825 | * find out the maximum number of scatter-gather elements supported by | |
826 | * this firmware | |
827 | */ | |
828 | adapter->sglen = megaraid_mbox_get_max_sg(adapter); | |
829 | ||
830 | // enumerate RAID and SCSI channels so that all devices on SCSI | |
831 | // channels can later be exported, including disk devices | |
832 | megaraid_mbox_enum_raid_scsi(adapter); | |
833 | ||
834 | /* | |
835 | * Other parameters required by upper layer | |
836 | * | |
837 | * maximum number of sectors per IO command | |
838 | */ | |
839 | adapter->max_sectors = megaraid_max_sectors; | |
840 | ||
841 | /* | |
842 | * number of queued commands per LUN. | |
843 | */ | |
844 | adapter->cmd_per_lun = megaraid_cmd_per_lun; | |
845 | ||
846 | /* | |
847 | * Allocate resources required to issue FW calls, when sysfs is | |
848 | * accessed | |
849 | */ | |
cd96d96f SP |
850 | if (megaraid_sysfs_alloc_resources(adapter) != 0) |
851 | goto out_free_irq; | |
1da177e4 LT |
852 | |
853 | // Set the DMA mask to 64-bit. All supported controllers as capable of | |
854 | // DMA in this range | |
fbf60802 JS |
855 | pci_read_config_dword(adapter->pdev, PCI_CONF_AMISIG64, &magic64); |
856 | ||
857 | if (((magic64 == HBA_SIGNATURE_64_BIT) && | |
858 | ((adapter->pdev->subsystem_device != | |
8741ca71 | 859 | PCI_SUBSYS_ID_MEGARAID_SATA_150_6) && |
fbf60802 JS |
860 | (adapter->pdev->subsystem_device != |
861 | PCI_SUBSYS_ID_MEGARAID_SATA_150_4))) || | |
862 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
863 | adapter->pdev->device == PCI_DEVICE_ID_VERDE) || | |
864 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
865 | adapter->pdev->device == PCI_DEVICE_ID_DOBSON) || | |
866 | (adapter->pdev->vendor == PCI_VENDOR_ID_LSI_LOGIC && | |
867 | adapter->pdev->device == PCI_DEVICE_ID_LINDSAY) || | |
868 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
869 | adapter->pdev->device == PCI_DEVICE_ID_PERC4_DI_EVERGLADES) || | |
870 | (adapter->pdev->vendor == PCI_VENDOR_ID_DELL && | |
871 | adapter->pdev->device == PCI_DEVICE_ID_PERC4E_DI_KOBUK)) { | |
66e3a241 | 872 | if (dma_set_mask(&adapter->pdev->dev, DMA_BIT_MASK(64))) { |
fbf60802 JS |
873 | con_log(CL_ANN, (KERN_WARNING |
874 | "megaraid: DMA mask for 64-bit failed\n")); | |
875 | ||
66e3a241 CH |
876 | if (dma_set_mask(&adapter->pdev->dev, |
877 | DMA_BIT_MASK(32))) { | |
fbf60802 JS |
878 | con_log(CL_ANN, (KERN_WARNING |
879 | "megaraid: 32-bit DMA mask failed\n")); | |
880 | goto out_free_sysfs_res; | |
881 | } | |
882 | } | |
1da177e4 LT |
883 | } |
884 | ||
885 | // setup tasklet for DPC | |
886 | tasklet_init(&adapter->dpc_h, megaraid_mbox_dpc, | |
887 | (unsigned long)adapter); | |
888 | ||
889 | con_log(CL_DLEVEL1, (KERN_INFO | |
890 | "megaraid mbox hba successfully initialized\n")); | |
891 | ||
892 | return 0; | |
893 | ||
894 | out_free_sysfs_res: | |
895 | megaraid_sysfs_free_resources(adapter); | |
1da177e4 LT |
896 | out_free_irq: |
897 | free_irq(adapter->irq, adapter); | |
cd96d96f SP |
898 | out_alloc_cmds: |
899 | megaraid_free_cmd_packets(adapter); | |
1da177e4 LT |
900 | out_iounmap: |
901 | iounmap(raid_dev->baseaddr); | |
902 | out_release_regions: | |
903 | pci_release_regions(pdev); | |
904 | out_free_raid_dev: | |
905 | kfree(raid_dev); | |
906 | ||
907 | return -1; | |
908 | } | |
909 | ||
910 | ||
911 | /** | |
912 | * megaraid_fini_mbox - undo controller initialization | |
a69b74d3 | 913 | * @adapter : our soft state |
1da177e4 LT |
914 | */ |
915 | static void | |
916 | megaraid_fini_mbox(adapter_t *adapter) | |
917 | { | |
918 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
919 | ||
920 | // flush all caches | |
921 | megaraid_mbox_flush_cache(adapter); | |
922 | ||
923 | tasklet_kill(&adapter->dpc_h); | |
924 | ||
925 | megaraid_sysfs_free_resources(adapter); | |
926 | ||
927 | megaraid_free_cmd_packets(adapter); | |
928 | ||
929 | free_irq(adapter->irq, adapter); | |
930 | ||
931 | iounmap(raid_dev->baseaddr); | |
932 | ||
933 | pci_release_regions(adapter->pdev); | |
934 | ||
935 | kfree(raid_dev); | |
936 | ||
937 | return; | |
938 | } | |
939 | ||
940 | ||
941 | /** | |
942 | * megaraid_alloc_cmd_packets - allocate shared mailbox | |
a69b74d3 | 943 | * @adapter : soft state of the raid controller |
1da177e4 | 944 | * |
6868aa76 | 945 | * Allocate and align the shared mailbox. This mailbox is used to issue |
3948ff8b | 946 | * all the commands. For IO based controllers, the mailbox is also registered |
1da177e4 | 947 | * with the FW. Allocate memory for all commands as well. |
a69b74d3 | 948 | * This is our big allocator. |
1da177e4 LT |
949 | */ |
950 | static int | |
951 | megaraid_alloc_cmd_packets(adapter_t *adapter) | |
952 | { | |
953 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
954 | struct pci_dev *pdev; | |
955 | unsigned long align; | |
956 | scb_t *scb; | |
957 | mbox_ccb_t *ccb; | |
958 | struct mraid_pci_blk *epthru_pci_blk; | |
959 | struct mraid_pci_blk *sg_pci_blk; | |
960 | struct mraid_pci_blk *mbox_pci_blk; | |
961 | int i; | |
962 | ||
963 | pdev = adapter->pdev; | |
964 | ||
965 | /* | |
966 | * Setup the mailbox | |
967 | * Allocate the common 16-byte aligned memory for the handshake | |
968 | * mailbox. | |
969 | */ | |
750afb08 LC |
970 | raid_dev->una_mbox64 = dma_alloc_coherent(&adapter->pdev->dev, |
971 | sizeof(mbox64_t), | |
972 | &raid_dev->una_mbox64_dma, | |
973 | GFP_KERNEL); | |
1da177e4 LT |
974 | |
975 | if (!raid_dev->una_mbox64) { | |
976 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 977 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
978 | __LINE__)); |
979 | return -1; | |
980 | } | |
1da177e4 LT |
981 | |
982 | /* | |
983 | * Align the mailbox at 16-byte boundary | |
984 | */ | |
985 | raid_dev->mbox = &raid_dev->una_mbox64->mbox32; | |
986 | ||
987 | raid_dev->mbox = (mbox_t *)((((unsigned long)raid_dev->mbox) + 15) & | |
988 | (~0UL ^ 0xFUL)); | |
989 | ||
990 | raid_dev->mbox64 = (mbox64_t *)(((unsigned long)raid_dev->mbox) - 8); | |
991 | ||
992 | align = ((void *)raid_dev->mbox - | |
993 | ((void *)&raid_dev->una_mbox64->mbox32)); | |
994 | ||
995 | raid_dev->mbox_dma = (unsigned long)raid_dev->una_mbox64_dma + 8 + | |
996 | align; | |
997 | ||
998 | // Allocate memory for commands issued internally | |
750afb08 LC |
999 | adapter->ibuf = dma_alloc_coherent(&pdev->dev, MBOX_IBUF_SIZE, |
1000 | &adapter->ibuf_dma_h, GFP_KERNEL); | |
1da177e4 LT |
1001 | if (!adapter->ibuf) { |
1002 | ||
1003 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1004 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1005 | __LINE__)); |
1006 | ||
1007 | goto out_free_common_mbox; | |
1008 | } | |
1da177e4 LT |
1009 | |
1010 | // Allocate memory for our SCSI Command Blocks and their associated | |
1011 | // memory | |
1012 | ||
1013 | /* | |
1014 | * Allocate memory for the base list of scb. Later allocate memory for | |
1015 | * CCBs and embedded components of each CCB and point the pointers in | |
1016 | * scb to the allocated components | |
1017 | * NOTE: The code to allocate SCB will be duplicated in all the LLD | |
1018 | * since the calling routine does not yet know the number of available | |
1019 | * commands. | |
1020 | */ | |
dd00cc48 | 1021 | adapter->kscb_list = kcalloc(MBOX_MAX_SCSI_CMDS, sizeof(scb_t), GFP_KERNEL); |
1da177e4 LT |
1022 | |
1023 | if (adapter->kscb_list == NULL) { | |
1024 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1025 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1026 | __LINE__)); |
1027 | goto out_free_ibuf; | |
1028 | } | |
1da177e4 LT |
1029 | |
1030 | // memory allocation for our command packets | |
1031 | if (megaraid_mbox_setup_dma_pools(adapter) != 0) { | |
1032 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 1033 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
1034 | __LINE__)); |
1035 | goto out_free_scb_list; | |
1036 | } | |
1037 | ||
1038 | // Adjust the scb pointers and link in the free pool | |
1039 | epthru_pci_blk = raid_dev->epthru_pool; | |
1040 | sg_pci_blk = raid_dev->sg_pool; | |
1041 | mbox_pci_blk = raid_dev->mbox_pool; | |
1042 | ||
1043 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
1044 | scb = adapter->kscb_list + i; | |
1045 | ccb = raid_dev->ccb_list + i; | |
1046 | ||
1047 | ccb->mbox = (mbox_t *)(mbox_pci_blk[i].vaddr + 16); | |
1048 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
1049 | ccb->mbox64 = (mbox64_t *)(mbox_pci_blk[i].vaddr + 8); | |
1050 | ccb->mbox_dma_h = (unsigned long)mbox_pci_blk[i].dma_addr + 16; | |
1051 | ||
1052 | // make sure the mailbox is aligned properly | |
1053 | if (ccb->mbox_dma_h & 0x0F) { | |
1054 | con_log(CL_ANN, (KERN_CRIT | |
1055 | "megaraid mbox: not aligned on 16-bytes\n")); | |
1056 | ||
1057 | goto out_teardown_dma_pools; | |
1058 | } | |
1059 | ||
1060 | ccb->epthru = (mraid_epassthru_t *) | |
1061 | epthru_pci_blk[i].vaddr; | |
1062 | ccb->epthru_dma_h = epthru_pci_blk[i].dma_addr; | |
1063 | ccb->pthru = (mraid_passthru_t *)ccb->epthru; | |
1064 | ccb->pthru_dma_h = ccb->epthru_dma_h; | |
1065 | ||
1066 | ||
1067 | ccb->sgl64 = (mbox_sgl64 *)sg_pci_blk[i].vaddr; | |
1068 | ccb->sgl_dma_h = sg_pci_blk[i].dma_addr; | |
1069 | ccb->sgl32 = (mbox_sgl32 *)ccb->sgl64; | |
1070 | ||
1071 | scb->ccb = (caddr_t)ccb; | |
1072 | scb->gp = 0; | |
1073 | ||
1074 | scb->sno = i; // command index | |
1075 | ||
1076 | scb->scp = NULL; | |
1077 | scb->state = SCB_FREE; | |
66e3a241 | 1078 | scb->dma_direction = DMA_NONE; |
1da177e4 LT |
1079 | scb->dma_type = MRAID_DMA_NONE; |
1080 | scb->dev_channel = -1; | |
1081 | scb->dev_target = -1; | |
1082 | ||
1083 | // put scb in the free pool | |
1084 | list_add_tail(&scb->list, &adapter->kscb_pool); | |
1085 | } | |
1086 | ||
1087 | return 0; | |
1088 | ||
1089 | out_teardown_dma_pools: | |
1090 | megaraid_mbox_teardown_dma_pools(adapter); | |
1091 | out_free_scb_list: | |
1092 | kfree(adapter->kscb_list); | |
1093 | out_free_ibuf: | |
66e3a241 | 1094 | dma_free_coherent(&pdev->dev, MBOX_IBUF_SIZE, (void *)adapter->ibuf, |
1da177e4 LT |
1095 | adapter->ibuf_dma_h); |
1096 | out_free_common_mbox: | |
66e3a241 | 1097 | dma_free_coherent(&adapter->pdev->dev, sizeof(mbox64_t), |
1da177e4 LT |
1098 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); |
1099 | ||
1100 | return -1; | |
1101 | } | |
1102 | ||
1103 | ||
1104 | /** | |
1105 | * megaraid_free_cmd_packets - free memory | |
a69b74d3 | 1106 | * @adapter : soft state of the raid controller |
1da177e4 | 1107 | * |
a69b74d3 | 1108 | * Release memory resources allocated for commands. |
1da177e4 LT |
1109 | */ |
1110 | static void | |
1111 | megaraid_free_cmd_packets(adapter_t *adapter) | |
1112 | { | |
1113 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1114 | ||
1115 | megaraid_mbox_teardown_dma_pools(adapter); | |
1116 | ||
1117 | kfree(adapter->kscb_list); | |
1118 | ||
66e3a241 | 1119 | dma_free_coherent(&adapter->pdev->dev, MBOX_IBUF_SIZE, |
1da177e4 LT |
1120 | (void *)adapter->ibuf, adapter->ibuf_dma_h); |
1121 | ||
66e3a241 | 1122 | dma_free_coherent(&adapter->pdev->dev, sizeof(mbox64_t), |
1da177e4 LT |
1123 | (caddr_t)raid_dev->una_mbox64, raid_dev->una_mbox64_dma); |
1124 | return; | |
1125 | } | |
1126 | ||
1127 | ||
1128 | /** | |
1129 | * megaraid_mbox_setup_dma_pools - setup dma pool for command packets | |
a69b74d3 | 1130 | * @adapter : HBA soft state |
1da177e4 | 1131 | * |
a69b74d3 RD |
1132 | * Setup the dma pools for mailbox, passthru and extended passthru structures, |
1133 | * and scatter-gather lists. | |
1da177e4 LT |
1134 | */ |
1135 | static int | |
1136 | megaraid_mbox_setup_dma_pools(adapter_t *adapter) | |
1137 | { | |
1138 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1139 | struct mraid_pci_blk *epthru_pci_blk; | |
1140 | struct mraid_pci_blk *sg_pci_blk; | |
1141 | struct mraid_pci_blk *mbox_pci_blk; | |
1142 | int i; | |
1143 | ||
1144 | ||
1145 | ||
1146 | // Allocate memory for 16-bytes aligned mailboxes | |
fc69d86d RP |
1147 | raid_dev->mbox_pool_handle = dma_pool_create("megaraid mbox pool", |
1148 | &adapter->pdev->dev, | |
1da177e4 LT |
1149 | sizeof(mbox64_t) + 16, |
1150 | 16, 0); | |
1151 | ||
1152 | if (raid_dev->mbox_pool_handle == NULL) { | |
1153 | goto fail_setup_dma_pool; | |
1154 | } | |
1155 | ||
1156 | mbox_pci_blk = raid_dev->mbox_pool; | |
1157 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
fc69d86d | 1158 | mbox_pci_blk[i].vaddr = dma_pool_alloc( |
1da177e4 LT |
1159 | raid_dev->mbox_pool_handle, |
1160 | GFP_KERNEL, | |
1161 | &mbox_pci_blk[i].dma_addr); | |
1162 | if (!mbox_pci_blk[i].vaddr) { | |
1163 | goto fail_setup_dma_pool; | |
1164 | } | |
1165 | } | |
1166 | ||
1167 | /* | |
1168 | * Allocate memory for each embedded passthru strucuture pointer | |
1169 | * Request for a 128 bytes aligned structure for each passthru command | |
1170 | * structure | |
1171 | * Since passthru and extended passthru commands are exclusive, they | |
1172 | * share common memory pool. Passthru structures piggyback on memory | |
1173 | * allocted to extended passthru since passthru is smaller of the two | |
1174 | */ | |
fc69d86d RP |
1175 | raid_dev->epthru_pool_handle = dma_pool_create("megaraid mbox pthru", |
1176 | &adapter->pdev->dev, sizeof(mraid_epassthru_t), 128, 0); | |
1da177e4 LT |
1177 | |
1178 | if (raid_dev->epthru_pool_handle == NULL) { | |
1179 | goto fail_setup_dma_pool; | |
1180 | } | |
1181 | ||
1182 | epthru_pci_blk = raid_dev->epthru_pool; | |
1183 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
fc69d86d | 1184 | epthru_pci_blk[i].vaddr = dma_pool_alloc( |
1da177e4 LT |
1185 | raid_dev->epthru_pool_handle, |
1186 | GFP_KERNEL, | |
1187 | &epthru_pci_blk[i].dma_addr); | |
1188 | if (!epthru_pci_blk[i].vaddr) { | |
1189 | goto fail_setup_dma_pool; | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | ||
1194 | // Allocate memory for each scatter-gather list. Request for 512 bytes | |
1195 | // alignment for each sg list | |
fc69d86d RP |
1196 | raid_dev->sg_pool_handle = dma_pool_create("megaraid mbox sg", |
1197 | &adapter->pdev->dev, | |
1da177e4 LT |
1198 | sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE, |
1199 | 512, 0); | |
1200 | ||
1201 | if (raid_dev->sg_pool_handle == NULL) { | |
1202 | goto fail_setup_dma_pool; | |
1203 | } | |
1204 | ||
1205 | sg_pci_blk = raid_dev->sg_pool; | |
1206 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { | |
fc69d86d | 1207 | sg_pci_blk[i].vaddr = dma_pool_alloc( |
1da177e4 LT |
1208 | raid_dev->sg_pool_handle, |
1209 | GFP_KERNEL, | |
1210 | &sg_pci_blk[i].dma_addr); | |
1211 | if (!sg_pci_blk[i].vaddr) { | |
1212 | goto fail_setup_dma_pool; | |
1213 | } | |
1214 | } | |
1215 | ||
1216 | return 0; | |
1217 | ||
1218 | fail_setup_dma_pool: | |
1219 | megaraid_mbox_teardown_dma_pools(adapter); | |
1220 | return -1; | |
1221 | } | |
1222 | ||
1223 | ||
1224 | /** | |
1225 | * megaraid_mbox_teardown_dma_pools - teardown dma pools for command packets | |
a69b74d3 | 1226 | * @adapter : HBA soft state |
1da177e4 | 1227 | * |
a69b74d3 RD |
1228 | * Teardown the dma pool for mailbox, passthru and extended passthru |
1229 | * structures, and scatter-gather lists. | |
1da177e4 LT |
1230 | */ |
1231 | static void | |
1232 | megaraid_mbox_teardown_dma_pools(adapter_t *adapter) | |
1233 | { | |
1234 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1235 | struct mraid_pci_blk *epthru_pci_blk; | |
1236 | struct mraid_pci_blk *sg_pci_blk; | |
1237 | struct mraid_pci_blk *mbox_pci_blk; | |
1238 | int i; | |
1239 | ||
1240 | ||
1241 | sg_pci_blk = raid_dev->sg_pool; | |
1242 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) { | |
fc69d86d | 1243 | dma_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr, |
1da177e4 LT |
1244 | sg_pci_blk[i].dma_addr); |
1245 | } | |
19c05072 | 1246 | dma_pool_destroy(raid_dev->sg_pool_handle); |
1da177e4 LT |
1247 | |
1248 | ||
1249 | epthru_pci_blk = raid_dev->epthru_pool; | |
1250 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) { | |
fc69d86d | 1251 | dma_pool_free(raid_dev->epthru_pool_handle, |
1da177e4 LT |
1252 | epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr); |
1253 | } | |
19c05072 | 1254 | dma_pool_destroy(raid_dev->epthru_pool_handle); |
1da177e4 LT |
1255 | |
1256 | ||
1257 | mbox_pci_blk = raid_dev->mbox_pool; | |
1258 | for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) { | |
fc69d86d | 1259 | dma_pool_free(raid_dev->mbox_pool_handle, |
1da177e4 LT |
1260 | mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr); |
1261 | } | |
19c05072 | 1262 | dma_pool_destroy(raid_dev->mbox_pool_handle); |
1da177e4 LT |
1263 | |
1264 | return; | |
1265 | } | |
1266 | ||
1267 | ||
1268 | /** | |
1269 | * megaraid_alloc_scb - detach and return a scb from the free list | |
1270 | * @adapter : controller's soft state | |
a69b74d3 | 1271 | * @scp : pointer to the scsi command to be executed |
1da177e4 | 1272 | * |
a69b74d3 RD |
1273 | * Return the scb from the head of the free list. %NULL if there are none |
1274 | * available. | |
1275 | */ | |
858119e1 | 1276 | static scb_t * |
1da177e4 LT |
1277 | megaraid_alloc_scb(adapter_t *adapter, struct scsi_cmnd *scp) |
1278 | { | |
1279 | struct list_head *head = &adapter->kscb_pool; | |
1280 | scb_t *scb = NULL; | |
1281 | unsigned long flags; | |
1282 | ||
1283 | // detach scb from free pool | |
1284 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1285 | ||
1286 | if (list_empty(head)) { | |
1287 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1288 | return NULL; | |
1289 | } | |
1290 | ||
1291 | scb = list_entry(head->next, scb_t, list); | |
1292 | list_del_init(&scb->list); | |
1293 | ||
1294 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1295 | ||
1296 | scb->state = SCB_ACTIVE; | |
1297 | scb->scp = scp; | |
1298 | scb->dma_type = MRAID_DMA_NONE; | |
1299 | ||
1300 | return scb; | |
1301 | } | |
1302 | ||
1303 | ||
1304 | /** | |
1305 | * megaraid_dealloc_scb - return the scb to the free pool | |
1306 | * @adapter : controller's soft state | |
1307 | * @scb : scb to be freed | |
1308 | * | |
a69b74d3 | 1309 | * Return the scb back to the free list of scbs. The caller must 'flush' the |
1da177e4 LT |
1310 | * SCB before calling us. E.g., performing pci_unamp and/or pci_sync etc. |
1311 | * NOTE NOTE: Make sure the scb is not on any list before calling this | |
1312 | * routine. | |
a69b74d3 | 1313 | */ |
1da177e4 LT |
1314 | static inline void |
1315 | megaraid_dealloc_scb(adapter_t *adapter, scb_t *scb) | |
1316 | { | |
1317 | unsigned long flags; | |
1318 | ||
1319 | // put scb in the free pool | |
1320 | scb->state = SCB_FREE; | |
1321 | scb->scp = NULL; | |
1322 | spin_lock_irqsave(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1323 | ||
1324 | list_add(&scb->list, &adapter->kscb_pool); | |
1325 | ||
1326 | spin_unlock_irqrestore(SCSI_FREE_LIST_LOCK(adapter), flags); | |
1327 | ||
1328 | return; | |
1329 | } | |
1330 | ||
1331 | ||
1332 | /** | |
1333 | * megaraid_mbox_mksgl - make the scatter-gather list | |
a69b74d3 RD |
1334 | * @adapter : controller's soft state |
1335 | * @scb : scsi control block | |
1da177e4 | 1336 | * |
a69b74d3 | 1337 | * Prepare the scatter-gather list. |
1da177e4 | 1338 | */ |
858119e1 | 1339 | static int |
1da177e4 LT |
1340 | megaraid_mbox_mksgl(adapter_t *adapter, scb_t *scb) |
1341 | { | |
1342 | struct scatterlist *sgl; | |
1343 | mbox_ccb_t *ccb; | |
1da177e4 LT |
1344 | struct scsi_cmnd *scp; |
1345 | int sgcnt; | |
1346 | int i; | |
1347 | ||
1348 | ||
1349 | scp = scb->scp; | |
1350 | ccb = (mbox_ccb_t *)scb->ccb; | |
1351 | ||
32fbac22 FT |
1352 | sgcnt = scsi_dma_map(scp); |
1353 | BUG_ON(sgcnt < 0 || sgcnt > adapter->sglen); | |
1354 | ||
1da177e4 | 1355 | // no mapping required if no data to be transferred |
32fbac22 | 1356 | if (!sgcnt) |
1da177e4 LT |
1357 | return 0; |
1358 | ||
1da177e4 LT |
1359 | scb->dma_type = MRAID_DMA_WSG; |
1360 | ||
32fbac22 | 1361 | scsi_for_each_sg(scp, sgl, sgcnt, i) { |
1da177e4 LT |
1362 | ccb->sgl64[i].address = sg_dma_address(sgl); |
1363 | ccb->sgl64[i].length = sg_dma_len(sgl); | |
1364 | } | |
1365 | ||
1366 | // Return count of SG nodes | |
1367 | return sgcnt; | |
1368 | } | |
1369 | ||
1370 | ||
1371 | /** | |
1372 | * mbox_post_cmd - issue a mailbox command | |
a69b74d3 RD |
1373 | * @adapter : controller's soft state |
1374 | * @scb : command to be issued | |
1da177e4 | 1375 | * |
a69b74d3 | 1376 | * Post the command to the controller if mailbox is available. |
1da177e4 | 1377 | */ |
858119e1 | 1378 | static int |
1da177e4 LT |
1379 | mbox_post_cmd(adapter_t *adapter, scb_t *scb) |
1380 | { | |
1381 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1382 | mbox64_t *mbox64; | |
1383 | mbox_t *mbox; | |
1384 | mbox_ccb_t *ccb; | |
1385 | unsigned long flags; | |
1386 | unsigned int i = 0; | |
1387 | ||
1388 | ||
1389 | ccb = (mbox_ccb_t *)scb->ccb; | |
1390 | mbox = raid_dev->mbox; | |
1391 | mbox64 = raid_dev->mbox64; | |
1392 | ||
1393 | /* | |
1394 | * Check for busy mailbox. If it is, return failure - the caller | |
1395 | * should retry later. | |
1396 | */ | |
1397 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
1398 | ||
1399 | if (unlikely(mbox->busy)) { | |
1400 | do { | |
1401 | udelay(1); | |
1402 | i++; | |
1403 | rmb(); | |
1404 | } while(mbox->busy && (i < max_mbox_busy_wait)); | |
1405 | ||
1406 | if (mbox->busy) { | |
1407 | ||
1408 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1409 | ||
1410 | return -1; | |
1411 | } | |
1412 | } | |
1413 | ||
1414 | ||
1415 | // Copy this command's mailbox data into "adapter's" mailbox | |
1416 | memcpy((caddr_t)mbox64, (caddr_t)ccb->mbox64, 22); | |
1417 | mbox->cmdid = scb->sno; | |
1418 | ||
1419 | adapter->outstanding_cmds++; | |
1420 | ||
1da177e4 LT |
1421 | mbox->busy = 1; // Set busy |
1422 | mbox->poll = 0; | |
1423 | mbox->ack = 0; | |
1424 | wmb(); | |
1425 | ||
1426 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
1427 | ||
1428 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
1429 | ||
1430 | return 0; | |
1431 | } | |
1432 | ||
1433 | ||
1434 | /** | |
1435 | * megaraid_queue_command - generic queue entry point for all LLDs | |
1436 | * @scp : pointer to the scsi command to be executed | |
1437 | * @done : callback routine to be called after the cmd has be completed | |
1438 | * | |
1439 | * Queue entry point for mailbox based controllers. | |
1440 | */ | |
1441 | static int | |
f281233d | 1442 | megaraid_queue_command_lck(struct scsi_cmnd *scp, void (*done)(struct scsi_cmnd *)) |
1da177e4 LT |
1443 | { |
1444 | adapter_t *adapter; | |
1445 | scb_t *scb; | |
1446 | int if_busy; | |
1447 | ||
1448 | adapter = SCP2ADAPTER(scp); | |
1449 | scp->scsi_done = done; | |
1450 | scp->result = 0; | |
1451 | ||
1da177e4 LT |
1452 | /* |
1453 | * Allocate and build a SCB request | |
1454 | * if_busy flag will be set if megaraid_mbox_build_cmd() command could | |
1455 | * not allocate scb. We will return non-zero status in that case. | |
1456 | * NOTE: scb can be null even though certain commands completed | |
1457 | * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, it would | |
1458 | * return 0 in that case, and we would do the callback right away. | |
1459 | */ | |
1460 | if_busy = 0; | |
f2c8dc40 | 1461 | scb = megaraid_mbox_build_cmd(adapter, scp, &if_busy); |
1da177e4 LT |
1462 | if (!scb) { // command already completed |
1463 | done(scp); | |
1464 | return 0; | |
1465 | } | |
1466 | ||
f2c8dc40 | 1467 | megaraid_mbox_runpendq(adapter, scb); |
1da177e4 LT |
1468 | return if_busy; |
1469 | } | |
1470 | ||
f281233d JG |
1471 | static DEF_SCSI_QCMD(megaraid_queue_command) |
1472 | ||
1da177e4 | 1473 | /** |
a69b74d3 RD |
1474 | * megaraid_mbox_build_cmd - transform the mid-layer scsi commands |
1475 | * @adapter : controller's soft state | |
1476 | * @scp : mid-layer scsi command pointer | |
1477 | * @busy : set if request could not be completed because of lack of | |
1da177e4 LT |
1478 | * resources |
1479 | * | |
a69b74d3 RD |
1480 | * Transform the mid-layer scsi command to megaraid firmware lingua. |
1481 | * Convert the command issued by mid-layer to format understood by megaraid | |
1482 | * firmware. We also complete certain commands without sending them to firmware. | |
1da177e4 LT |
1483 | */ |
1484 | static scb_t * | |
1485 | megaraid_mbox_build_cmd(adapter_t *adapter, struct scsi_cmnd *scp, int *busy) | |
1486 | { | |
1487 | mraid_device_t *rdev = ADAP2RAIDDEV(adapter); | |
1488 | int channel; | |
1489 | int target; | |
1490 | int islogical; | |
1491 | mbox_ccb_t *ccb; | |
1492 | mraid_passthru_t *pthru; | |
1493 | mbox64_t *mbox64; | |
1494 | mbox_t *mbox; | |
1495 | scb_t *scb; | |
1496 | char skip[] = "skipping"; | |
1497 | char scan[] = "scanning"; | |
1498 | char *ss; | |
1499 | ||
1500 | ||
1501 | /* | |
1502 | * Get the appropriate device map for the device this command is | |
1503 | * intended for | |
1504 | */ | |
1505 | MRAID_GET_DEVICE_MAP(adapter, scp, channel, target, islogical); | |
1506 | ||
1507 | /* | |
1508 | * Logical drive commands | |
1509 | */ | |
1510 | if (islogical) { | |
1511 | switch (scp->cmnd[0]) { | |
1512 | case TEST_UNIT_READY: | |
1513 | /* | |
1514 | * Do we support clustering and is the support enabled | |
1515 | * If no, return success always | |
1516 | */ | |
1517 | if (!adapter->ha) { | |
1518 | scp->result = (DID_OK << 16); | |
1519 | return NULL; | |
1520 | } | |
1521 | ||
1522 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1523 | scp->result = (DID_ERROR << 16); | |
1524 | *busy = 1; | |
1525 | return NULL; | |
1526 | } | |
1527 | ||
1528 | scb->dma_direction = scp->sc_data_direction; | |
1529 | scb->dev_channel = 0xFF; | |
1530 | scb->dev_target = target; | |
1531 | ccb = (mbox_ccb_t *)scb->ccb; | |
1532 | ||
1533 | /* | |
1534 | * The command id will be provided by the command | |
1535 | * issuance routine | |
1536 | */ | |
1537 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1538 | ccb->raw_mbox[2] = RESERVATION_STATUS; | |
1539 | ccb->raw_mbox[3] = target; | |
1540 | ||
1541 | return scb; | |
1542 | ||
1543 | case MODE_SENSE: | |
32fbac22 FT |
1544 | { |
1545 | struct scatterlist *sgl; | |
1546 | caddr_t vaddr; | |
1da177e4 | 1547 | |
32fbac22 | 1548 | sgl = scsi_sglist(scp); |
45711f1a JA |
1549 | if (sg_page(sgl)) { |
1550 | vaddr = (caddr_t) sg_virt(&sgl[0]); | |
1da177e4 | 1551 | |
32fbac22 | 1552 | memset(vaddr, 0, scp->cmnd[4]); |
1da177e4 LT |
1553 | } |
1554 | else { | |
32fbac22 FT |
1555 | con_log(CL_ANN, (KERN_WARNING |
1556 | "megaraid mailbox: invalid sg:%d\n", | |
1557 | __LINE__)); | |
1da177e4 | 1558 | } |
32fbac22 FT |
1559 | } |
1560 | scp->result = (DID_OK << 16); | |
1561 | return NULL; | |
1da177e4 LT |
1562 | |
1563 | case INQUIRY: | |
1564 | /* | |
1565 | * Display the channel scan for logical drives | |
1566 | * Do not display scan for a channel if already done. | |
1567 | */ | |
1568 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1569 | ||
1570 | con_log(CL_ANN, (KERN_INFO | |
1571 | "scsi[%d]: scanning scsi channel %d", | |
1572 | adapter->host->host_no, | |
1573 | SCP2CHANNEL(scp))); | |
1574 | ||
1575 | con_log(CL_ANN, ( | |
1576 | " [virtual] for logical drives\n")); | |
1577 | ||
1578 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1579 | } | |
1580 | ||
aa677bc7 JS |
1581 | if (scp->cmnd[1] & MEGA_SCSI_INQ_EVPD) { |
1582 | scp->sense_buffer[0] = 0x70; | |
1583 | scp->sense_buffer[2] = ILLEGAL_REQUEST; | |
1584 | scp->sense_buffer[12] = MEGA_INVALID_FIELD_IN_CDB; | |
1585 | scp->result = CHECK_CONDITION << 1; | |
1586 | return NULL; | |
1587 | } | |
1588 | ||
1da177e4 LT |
1589 | /* Fall through */ |
1590 | ||
1591 | case READ_CAPACITY: | |
1592 | /* | |
1593 | * Do not allow LUN > 0 for logical drives and | |
1594 | * requests for more than 40 logical drives | |
1595 | */ | |
1596 | if (SCP2LUN(scp)) { | |
1597 | scp->result = (DID_BAD_TARGET << 16); | |
1598 | return NULL; | |
1599 | } | |
1600 | if ((target % 0x80) >= MAX_LOGICAL_DRIVES_40LD) { | |
1601 | scp->result = (DID_BAD_TARGET << 16); | |
1602 | return NULL; | |
1603 | } | |
1604 | ||
1605 | ||
1606 | /* Allocate a SCB and initialize passthru */ | |
1607 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1608 | scp->result = (DID_ERROR << 16); | |
1609 | *busy = 1; | |
1610 | return NULL; | |
1611 | } | |
1612 | ||
1613 | ccb = (mbox_ccb_t *)scb->ccb; | |
1614 | scb->dev_channel = 0xFF; | |
1615 | scb->dev_target = target; | |
1616 | pthru = ccb->pthru; | |
1617 | mbox = ccb->mbox; | |
1618 | mbox64 = ccb->mbox64; | |
1619 | ||
1620 | pthru->timeout = 0; | |
1621 | pthru->ars = 1; | |
1622 | pthru->reqsenselen = 14; | |
1623 | pthru->islogical = 1; | |
1624 | pthru->logdrv = target; | |
1625 | pthru->cdblen = scp->cmd_len; | |
1626 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1627 | ||
1628 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1629 | scb->dma_direction = scp->sc_data_direction; | |
1630 | ||
32fbac22 | 1631 | pthru->dataxferlen = scsi_bufflen(scp); |
1da177e4 LT |
1632 | pthru->dataxferaddr = ccb->sgl_dma_h; |
1633 | pthru->numsge = megaraid_mbox_mksgl(adapter, | |
1634 | scb); | |
1635 | ||
1636 | mbox->xferaddr = 0xFFFFFFFF; | |
1637 | mbox64->xferaddr_lo = (uint32_t )ccb->pthru_dma_h; | |
1638 | mbox64->xferaddr_hi = 0; | |
1639 | ||
1640 | return scb; | |
1641 | ||
1642 | case READ_6: | |
1643 | case WRITE_6: | |
1644 | case READ_10: | |
1645 | case WRITE_10: | |
1646 | case READ_12: | |
1647 | case WRITE_12: | |
1648 | ||
1649 | /* | |
1650 | * Allocate a SCB and initialize mailbox | |
1651 | */ | |
1652 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1653 | scp->result = (DID_ERROR << 16); | |
1654 | *busy = 1; | |
1655 | return NULL; | |
1656 | } | |
1657 | ccb = (mbox_ccb_t *)scb->ccb; | |
1658 | scb->dev_channel = 0xFF; | |
1659 | scb->dev_target = target; | |
1660 | mbox = ccb->mbox; | |
1661 | mbox64 = ccb->mbox64; | |
1662 | mbox->logdrv = target; | |
1663 | ||
1664 | /* | |
1665 | * A little HACK: 2nd bit is zero for all scsi read | |
1666 | * commands and is set for all scsi write commands | |
1667 | */ | |
1668 | mbox->cmd = (scp->cmnd[0] & 0x02) ? MBOXCMD_LWRITE64: | |
1669 | MBOXCMD_LREAD64 ; | |
1670 | ||
1671 | /* | |
1672 | * 6-byte READ(0x08) or WRITE(0x0A) cdb | |
1673 | */ | |
1674 | if (scp->cmd_len == 6) { | |
1675 | mbox->numsectors = (uint32_t)scp->cmnd[4]; | |
1676 | mbox->lba = | |
1677 | ((uint32_t)scp->cmnd[1] << 16) | | |
1678 | ((uint32_t)scp->cmnd[2] << 8) | | |
1679 | (uint32_t)scp->cmnd[3]; | |
1680 | ||
1681 | mbox->lba &= 0x1FFFFF; | |
1682 | } | |
1683 | ||
1684 | /* | |
1685 | * 10-byte READ(0x28) or WRITE(0x2A) cdb | |
1686 | */ | |
1687 | else if (scp->cmd_len == 10) { | |
1688 | mbox->numsectors = | |
1689 | (uint32_t)scp->cmnd[8] | | |
1690 | ((uint32_t)scp->cmnd[7] << 8); | |
1691 | mbox->lba = | |
1692 | ((uint32_t)scp->cmnd[2] << 24) | | |
1693 | ((uint32_t)scp->cmnd[3] << 16) | | |
1694 | ((uint32_t)scp->cmnd[4] << 8) | | |
1695 | (uint32_t)scp->cmnd[5]; | |
1696 | } | |
1697 | ||
1698 | /* | |
1699 | * 12-byte READ(0xA8) or WRITE(0xAA) cdb | |
1700 | */ | |
1701 | else if (scp->cmd_len == 12) { | |
1702 | mbox->lba = | |
1703 | ((uint32_t)scp->cmnd[2] << 24) | | |
1704 | ((uint32_t)scp->cmnd[3] << 16) | | |
1705 | ((uint32_t)scp->cmnd[4] << 8) | | |
1706 | (uint32_t)scp->cmnd[5]; | |
1707 | ||
1708 | mbox->numsectors = | |
1709 | ((uint32_t)scp->cmnd[6] << 24) | | |
1710 | ((uint32_t)scp->cmnd[7] << 16) | | |
1711 | ((uint32_t)scp->cmnd[8] << 8) | | |
1712 | (uint32_t)scp->cmnd[9]; | |
1713 | } | |
1714 | else { | |
1715 | con_log(CL_ANN, (KERN_WARNING | |
1716 | "megaraid: unsupported CDB length\n")); | |
1717 | ||
1718 | megaraid_dealloc_scb(adapter, scb); | |
1719 | ||
1720 | scp->result = (DID_ERROR << 16); | |
1721 | return NULL; | |
1722 | } | |
1723 | ||
1724 | scb->dma_direction = scp->sc_data_direction; | |
1725 | ||
1726 | // Calculate Scatter-Gather info | |
1727 | mbox64->xferaddr_lo = (uint32_t )ccb->sgl_dma_h; | |
1728 | mbox->numsge = megaraid_mbox_mksgl(adapter, | |
1729 | scb); | |
1730 | mbox->xferaddr = 0xFFFFFFFF; | |
1731 | mbox64->xferaddr_hi = 0; | |
1732 | ||
1733 | return scb; | |
1734 | ||
1735 | case RESERVE: | |
1736 | case RELEASE: | |
1737 | /* | |
1738 | * Do we support clustering and is the support enabled | |
1739 | */ | |
1740 | if (!adapter->ha) { | |
1741 | scp->result = (DID_BAD_TARGET << 16); | |
1742 | return NULL; | |
1743 | } | |
1744 | ||
1745 | /* | |
1746 | * Allocate a SCB and initialize mailbox | |
1747 | */ | |
1748 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1749 | scp->result = (DID_ERROR << 16); | |
1750 | *busy = 1; | |
1751 | return NULL; | |
1752 | } | |
1753 | ||
1754 | ccb = (mbox_ccb_t *)scb->ccb; | |
1755 | scb->dev_channel = 0xFF; | |
1756 | scb->dev_target = target; | |
1757 | ccb->raw_mbox[0] = CLUSTER_CMD; | |
1758 | ccb->raw_mbox[2] = (scp->cmnd[0] == RESERVE) ? | |
1759 | RESERVE_LD : RELEASE_LD; | |
1760 | ||
1761 | ccb->raw_mbox[3] = target; | |
1762 | scb->dma_direction = scp->sc_data_direction; | |
1763 | ||
1764 | return scb; | |
1765 | ||
1766 | default: | |
1767 | scp->result = (DID_BAD_TARGET << 16); | |
1768 | return NULL; | |
1769 | } | |
1770 | } | |
1771 | else { // Passthru device commands | |
1772 | ||
1773 | // Do not allow access to target id > 15 or LUN > 7 | |
1774 | if (target > 15 || SCP2LUN(scp) > 7) { | |
1775 | scp->result = (DID_BAD_TARGET << 16); | |
1776 | return NULL; | |
1777 | } | |
1778 | ||
1779 | // if fast load option was set and scan for last device is | |
1780 | // over, reset the fast_load flag so that during a possible | |
1781 | // next scan, devices can be made available | |
1782 | if (rdev->fast_load && (target == 15) && | |
1783 | (SCP2CHANNEL(scp) == adapter->max_channel -1)) { | |
1784 | ||
1785 | con_log(CL_ANN, (KERN_INFO | |
1786 | "megaraid[%d]: physical device scan re-enabled\n", | |
1787 | adapter->host->host_no)); | |
1788 | rdev->fast_load = 0; | |
1789 | } | |
1790 | ||
1791 | /* | |
1792 | * Display the channel scan for physical devices | |
1793 | */ | |
1794 | if (!(rdev->last_disp & (1L << SCP2CHANNEL(scp)))) { | |
1795 | ||
1796 | ss = rdev->fast_load ? skip : scan; | |
1797 | ||
1798 | con_log(CL_ANN, (KERN_INFO | |
1799 | "scsi[%d]: %s scsi channel %d [Phy %d]", | |
1800 | adapter->host->host_no, ss, SCP2CHANNEL(scp), | |
1801 | channel)); | |
1802 | ||
1803 | con_log(CL_ANN, ( | |
1804 | " for non-raid devices\n")); | |
1805 | ||
1806 | rdev->last_disp |= (1L << SCP2CHANNEL(scp)); | |
1807 | } | |
1808 | ||
1809 | // disable channel sweep if fast load option given | |
1810 | if (rdev->fast_load) { | |
1811 | scp->result = (DID_BAD_TARGET << 16); | |
1812 | return NULL; | |
1813 | } | |
1814 | ||
1815 | // Allocate a SCB and initialize passthru | |
1816 | if (!(scb = megaraid_alloc_scb(adapter, scp))) { | |
1817 | scp->result = (DID_ERROR << 16); | |
1818 | *busy = 1; | |
1819 | return NULL; | |
1820 | } | |
1821 | ||
1822 | ccb = (mbox_ccb_t *)scb->ccb; | |
1823 | scb->dev_channel = channel; | |
1824 | scb->dev_target = target; | |
1825 | scb->dma_direction = scp->sc_data_direction; | |
1826 | mbox = ccb->mbox; | |
1827 | mbox64 = ccb->mbox64; | |
1828 | ||
1829 | // Does this firmware support extended CDBs | |
1830 | if (adapter->max_cdb_sz == 16) { | |
1831 | mbox->cmd = MBOXCMD_EXTPTHRU; | |
1832 | ||
1833 | megaraid_mbox_prepare_epthru(adapter, scb, scp); | |
1834 | ||
1835 | mbox64->xferaddr_lo = (uint32_t)ccb->epthru_dma_h; | |
1836 | mbox64->xferaddr_hi = 0; | |
1837 | mbox->xferaddr = 0xFFFFFFFF; | |
1838 | } | |
1839 | else { | |
1840 | mbox->cmd = MBOXCMD_PASSTHRU64; | |
1841 | ||
1842 | megaraid_mbox_prepare_pthru(adapter, scb, scp); | |
1843 | ||
1844 | mbox64->xferaddr_lo = (uint32_t)ccb->pthru_dma_h; | |
1845 | mbox64->xferaddr_hi = 0; | |
1846 | mbox->xferaddr = 0xFFFFFFFF; | |
1847 | } | |
1848 | return scb; | |
1849 | } | |
1850 | ||
1851 | // NOT REACHED | |
1852 | } | |
1853 | ||
1854 | ||
1855 | /** | |
1856 | * megaraid_mbox_runpendq - execute commands queued in the pending queue | |
1857 | * @adapter : controller's soft state | |
a69b74d3 | 1858 | * @scb_q : SCB to be queued in the pending list |
1da177e4 | 1859 | * |
a69b74d3 | 1860 | * Scan the pending list for commands which are not yet issued and try to |
1da177e4 LT |
1861 | * post to the controller. The SCB can be a null pointer, which would indicate |
1862 | * no SCB to be queue, just try to execute the ones in the pending list. | |
1863 | * | |
1864 | * NOTE: We do not actually traverse the pending list. The SCBs are plucked | |
1865 | * out from the head of the pending list. If it is successfully issued, the | |
1866 | * next SCB is at the head now. | |
1867 | */ | |
1868 | static void | |
1869 | megaraid_mbox_runpendq(adapter_t *adapter, scb_t *scb_q) | |
1870 | { | |
1871 | scb_t *scb; | |
1872 | unsigned long flags; | |
1873 | ||
1874 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1875 | ||
1876 | if (scb_q) { | |
1877 | scb_q->state = SCB_PENDQ; | |
1878 | list_add_tail(&scb_q->list, &adapter->pend_list); | |
1879 | } | |
1880 | ||
1881 | // if the adapter in not in quiescent mode, post the commands to FW | |
1882 | if (adapter->quiescent) { | |
1883 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1884 | return; | |
1885 | } | |
1886 | ||
1887 | while (!list_empty(&adapter->pend_list)) { | |
1888 | ||
1889 | assert_spin_locked(PENDING_LIST_LOCK(adapter)); | |
1890 | ||
1891 | scb = list_entry(adapter->pend_list.next, scb_t, list); | |
1892 | ||
1893 | // remove the scb from the pending list and try to | |
1894 | // issue. If we are unable to issue it, put back in | |
1895 | // the pending list and return | |
1896 | ||
1897 | list_del_init(&scb->list); | |
1898 | ||
1899 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1900 | ||
1901 | // if mailbox was busy, return SCB back to pending | |
1902 | // list. Make sure to add at the head, since that's | |
1903 | // where it would have been removed from | |
1904 | ||
1905 | scb->state = SCB_ISSUED; | |
1906 | ||
1907 | if (mbox_post_cmd(adapter, scb) != 0) { | |
1908 | ||
1909 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1910 | ||
1911 | scb->state = SCB_PENDQ; | |
1912 | ||
1913 | list_add(&scb->list, &adapter->pend_list); | |
1914 | ||
1915 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
1916 | flags); | |
1917 | ||
1918 | return; | |
1919 | } | |
1920 | ||
1921 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
1922 | } | |
1923 | ||
1924 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
1925 | ||
1926 | ||
1927 | return; | |
1928 | } | |
1929 | ||
1930 | ||
1931 | /** | |
1932 | * megaraid_mbox_prepare_pthru - prepare a command for physical devices | |
a69b74d3 RD |
1933 | * @adapter : pointer to controller's soft state |
1934 | * @scb : scsi control block | |
1935 | * @scp : scsi command from the mid-layer | |
1da177e4 | 1936 | * |
a69b74d3 | 1937 | * Prepare a command for the scsi physical devices. |
1da177e4 LT |
1938 | */ |
1939 | static void | |
1940 | megaraid_mbox_prepare_pthru(adapter_t *adapter, scb_t *scb, | |
1941 | struct scsi_cmnd *scp) | |
1942 | { | |
1943 | mbox_ccb_t *ccb; | |
1944 | mraid_passthru_t *pthru; | |
1945 | uint8_t channel; | |
1946 | uint8_t target; | |
1947 | ||
1948 | ccb = (mbox_ccb_t *)scb->ccb; | |
1949 | pthru = ccb->pthru; | |
1950 | channel = scb->dev_channel; | |
1951 | target = scb->dev_target; | |
1952 | ||
1953 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
1954 | pthru->timeout = 4; | |
1955 | pthru->ars = 1; | |
1956 | pthru->islogical = 0; | |
1957 | pthru->channel = 0; | |
1958 | pthru->target = (channel << 4) | target; | |
1959 | pthru->logdrv = SCP2LUN(scp); | |
1960 | pthru->reqsenselen = 14; | |
1961 | pthru->cdblen = scp->cmd_len; | |
1962 | ||
1963 | memcpy(pthru->cdb, scp->cmnd, scp->cmd_len); | |
1964 | ||
32fbac22 FT |
1965 | if (scsi_bufflen(scp)) { |
1966 | pthru->dataxferlen = scsi_bufflen(scp); | |
1da177e4 LT |
1967 | pthru->dataxferaddr = ccb->sgl_dma_h; |
1968 | pthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
1969 | } | |
1970 | else { | |
1971 | pthru->dataxferaddr = 0; | |
1972 | pthru->dataxferlen = 0; | |
1973 | pthru->numsge = 0; | |
1974 | } | |
1975 | return; | |
1976 | } | |
1977 | ||
1978 | ||
1979 | /** | |
1980 | * megaraid_mbox_prepare_epthru - prepare a command for physical devices | |
a69b74d3 RD |
1981 | * @adapter : pointer to controller's soft state |
1982 | * @scb : scsi control block | |
1983 | * @scp : scsi command from the mid-layer | |
1da177e4 | 1984 | * |
3948ff8b | 1985 | * Prepare a command for the scsi physical devices. This routine prepares |
a69b74d3 | 1986 | * commands for devices which can take extended CDBs (>10 bytes). |
1da177e4 LT |
1987 | */ |
1988 | static void | |
1989 | megaraid_mbox_prepare_epthru(adapter_t *adapter, scb_t *scb, | |
1990 | struct scsi_cmnd *scp) | |
1991 | { | |
1992 | mbox_ccb_t *ccb; | |
1993 | mraid_epassthru_t *epthru; | |
1994 | uint8_t channel; | |
1995 | uint8_t target; | |
1996 | ||
1997 | ccb = (mbox_ccb_t *)scb->ccb; | |
1998 | epthru = ccb->epthru; | |
1999 | channel = scb->dev_channel; | |
2000 | target = scb->dev_target; | |
2001 | ||
2002 | // 0=6sec, 1=60sec, 2=10min, 3=3hrs, 4=NO timeout | |
2003 | epthru->timeout = 4; | |
2004 | epthru->ars = 1; | |
2005 | epthru->islogical = 0; | |
2006 | epthru->channel = 0; | |
2007 | epthru->target = (channel << 4) | target; | |
2008 | epthru->logdrv = SCP2LUN(scp); | |
2009 | epthru->reqsenselen = 14; | |
2010 | epthru->cdblen = scp->cmd_len; | |
2011 | ||
2012 | memcpy(epthru->cdb, scp->cmnd, scp->cmd_len); | |
2013 | ||
32fbac22 FT |
2014 | if (scsi_bufflen(scp)) { |
2015 | epthru->dataxferlen = scsi_bufflen(scp); | |
1da177e4 LT |
2016 | epthru->dataxferaddr = ccb->sgl_dma_h; |
2017 | epthru->numsge = megaraid_mbox_mksgl(adapter, scb); | |
2018 | } | |
2019 | else { | |
2020 | epthru->dataxferaddr = 0; | |
2021 | epthru->dataxferlen = 0; | |
2022 | epthru->numsge = 0; | |
2023 | } | |
2024 | return; | |
2025 | } | |
2026 | ||
2027 | ||
2028 | /** | |
2029 | * megaraid_ack_sequence - interrupt ack sequence for memory mapped HBAs | |
a69b74d3 | 2030 | * @adapter : controller's soft state |
1da177e4 | 2031 | * |
a69b74d3 | 2032 | * Interrupt acknowledgement sequence for memory mapped HBAs. Find out the |
1da177e4 LT |
2033 | * completed command and put them on the completed list for later processing. |
2034 | * | |
2035 | * Returns: 1 if the interrupt is valid, 0 otherwise | |
2036 | */ | |
858119e1 | 2037 | static int |
1da177e4 LT |
2038 | megaraid_ack_sequence(adapter_t *adapter) |
2039 | { | |
2040 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2041 | mbox_t *mbox; | |
2042 | scb_t *scb; | |
2043 | uint8_t nstatus; | |
2044 | uint8_t completed[MBOX_MAX_FIRMWARE_STATUS]; | |
2045 | struct list_head clist; | |
2046 | int handled; | |
2047 | uint32_t dword; | |
2048 | unsigned long flags; | |
2049 | int i, j; | |
2050 | ||
2051 | ||
2052 | mbox = raid_dev->mbox; | |
2053 | ||
2054 | // move the SCBs from the firmware completed array to our local list | |
2055 | INIT_LIST_HEAD(&clist); | |
2056 | ||
2057 | // loop till F/W has more commands for us to complete | |
2058 | handled = 0; | |
2059 | spin_lock_irqsave(MAILBOX_LOCK(raid_dev), flags); | |
2060 | do { | |
2061 | /* | |
2062 | * Check if a valid interrupt is pending. If found, force the | |
2063 | * interrupt line low. | |
2064 | */ | |
2065 | dword = RDOUTDOOR(raid_dev); | |
2066 | if (dword != 0x10001234) break; | |
2067 | ||
2068 | handled = 1; | |
2069 | ||
2070 | WROUTDOOR(raid_dev, 0x10001234); | |
2071 | ||
2072 | nstatus = 0; | |
2073 | // wait for valid numstatus to post | |
2074 | for (i = 0; i < 0xFFFFF; i++) { | |
2075 | if (mbox->numstatus != 0xFF) { | |
2076 | nstatus = mbox->numstatus; | |
2077 | break; | |
2078 | } | |
2079 | rmb(); | |
2080 | } | |
2081 | mbox->numstatus = 0xFF; | |
2082 | ||
2083 | adapter->outstanding_cmds -= nstatus; | |
2084 | ||
2085 | for (i = 0; i < nstatus; i++) { | |
2086 | ||
2087 | // wait for valid command index to post | |
2088 | for (j = 0; j < 0xFFFFF; j++) { | |
2089 | if (mbox->completed[i] != 0xFF) break; | |
2090 | rmb(); | |
2091 | } | |
2092 | completed[i] = mbox->completed[i]; | |
2093 | mbox->completed[i] = 0xFF; | |
2094 | ||
2095 | if (completed[i] == 0xFF) { | |
2096 | con_log(CL_ANN, (KERN_CRIT | |
2097 | "megaraid: command posting timed out\n")); | |
2098 | ||
2099 | BUG(); | |
2100 | continue; | |
2101 | } | |
2102 | ||
2103 | // Get SCB associated with this command id | |
2104 | if (completed[i] >= MBOX_MAX_SCSI_CMDS) { | |
2105 | // a cmm command | |
2106 | scb = adapter->uscb_list + (completed[i] - | |
2107 | MBOX_MAX_SCSI_CMDS); | |
2108 | } | |
2109 | else { | |
2110 | // an os command | |
2111 | scb = adapter->kscb_list + completed[i]; | |
2112 | } | |
2113 | ||
2114 | scb->status = mbox->status; | |
2115 | list_add_tail(&scb->list, &clist); | |
2116 | } | |
2117 | ||
2118 | // Acknowledge interrupt | |
2119 | WRINDOOR(raid_dev, 0x02); | |
2120 | ||
2121 | } while(1); | |
2122 | ||
2123 | spin_unlock_irqrestore(MAILBOX_LOCK(raid_dev), flags); | |
2124 | ||
2125 | ||
2126 | // put the completed commands in the completed list. DPC would | |
2127 | // complete these commands later | |
2128 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2129 | ||
2130 | list_splice(&clist, &adapter->completed_list); | |
2131 | ||
2132 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2133 | ||
2134 | ||
2135 | // schedule the DPC if there is some work for it | |
2136 | if (handled) | |
2137 | tasklet_schedule(&adapter->dpc_h); | |
2138 | ||
2139 | return handled; | |
2140 | } | |
2141 | ||
2142 | ||
2143 | /** | |
2144 | * megaraid_isr - isr for memory based mailbox based controllers | |
a69b74d3 RD |
2145 | * @irq : irq |
2146 | * @devp : pointer to our soft state | |
1da177e4 LT |
2147 | * |
2148 | * Interrupt service routine for memory-mapped mailbox controllers. | |
2149 | */ | |
2150 | static irqreturn_t | |
7d12e780 | 2151 | megaraid_isr(int irq, void *devp) |
1da177e4 LT |
2152 | { |
2153 | adapter_t *adapter = devp; | |
2154 | int handled; | |
2155 | ||
2156 | handled = megaraid_ack_sequence(adapter); | |
2157 | ||
2158 | /* Loop through any pending requests */ | |
2159 | if (!adapter->quiescent) { | |
2160 | megaraid_mbox_runpendq(adapter, NULL); | |
2161 | } | |
2162 | ||
2163 | return IRQ_RETVAL(handled); | |
2164 | } | |
2165 | ||
2166 | ||
1da177e4 LT |
2167 | /** |
2168 | * megaraid_mbox_dpc - the tasklet to complete the commands from completed list | |
2169 | * @devp : pointer to HBA soft state | |
2170 | * | |
2171 | * Pick up the commands from the completed list and send back to the owners. | |
2172 | * This is a reentrant function and does not assume any locks are held while | |
2173 | * it is being called. | |
2174 | */ | |
2175 | static void | |
2176 | megaraid_mbox_dpc(unsigned long devp) | |
2177 | { | |
2178 | adapter_t *adapter = (adapter_t *)devp; | |
2179 | mraid_device_t *raid_dev; | |
2180 | struct list_head clist; | |
2181 | struct scatterlist *sgl; | |
2182 | scb_t *scb; | |
2183 | scb_t *tmp; | |
2184 | struct scsi_cmnd *scp; | |
2185 | mraid_passthru_t *pthru; | |
2186 | mraid_epassthru_t *epthru; | |
2187 | mbox_ccb_t *ccb; | |
2188 | int islogical; | |
2189 | int pdev_index; | |
2190 | int pdev_state; | |
2191 | mbox_t *mbox; | |
2192 | unsigned long flags; | |
2193 | uint8_t c; | |
2194 | int status; | |
c005fb4f | 2195 | uioc_t *kioc; |
1da177e4 LT |
2196 | |
2197 | ||
2198 | if (!adapter) return; | |
2199 | ||
2200 | raid_dev = ADAP2RAIDDEV(adapter); | |
2201 | ||
2202 | // move the SCBs from the completed list to our local list | |
2203 | INIT_LIST_HEAD(&clist); | |
2204 | ||
2205 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2206 | ||
2207 | list_splice_init(&adapter->completed_list, &clist); | |
2208 | ||
2209 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2210 | ||
2211 | ||
2212 | list_for_each_entry_safe(scb, tmp, &clist, list) { | |
2213 | ||
2214 | status = scb->status; | |
2215 | scp = scb->scp; | |
2216 | ccb = (mbox_ccb_t *)scb->ccb; | |
2217 | pthru = ccb->pthru; | |
2218 | epthru = ccb->epthru; | |
2219 | mbox = ccb->mbox; | |
2220 | ||
2221 | // Make sure f/w has completed a valid command | |
2222 | if (scb->state != SCB_ISSUED) { | |
2223 | con_log(CL_ANN, (KERN_CRIT | |
2224 | "megaraid critical err: invalid command %d:%d:%p\n", | |
2225 | scb->sno, scb->state, scp)); | |
2226 | BUG(); | |
2227 | continue; // Must never happen! | |
2228 | } | |
2229 | ||
2230 | // check for the management command and complete it right away | |
2231 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { | |
2232 | scb->state = SCB_FREE; | |
2233 | scb->status = status; | |
2234 | ||
2235 | // remove from local clist | |
2236 | list_del_init(&scb->list); | |
2237 | ||
c005fb4f JS |
2238 | kioc = (uioc_t *)scb->gp; |
2239 | kioc->status = 0; | |
2240 | ||
1da177e4 LT |
2241 | megaraid_mbox_mm_done(adapter, scb); |
2242 | ||
2243 | continue; | |
2244 | } | |
2245 | ||
2246 | // Was an abort issued for this command earlier | |
2247 | if (scb->state & SCB_ABORT) { | |
2248 | con_log(CL_ANN, (KERN_NOTICE | |
5cd049a5 CH |
2249 | "megaraid: aborted cmd [%x] completed\n", |
2250 | scb->sno)); | |
1da177e4 LT |
2251 | } |
2252 | ||
2253 | /* | |
2254 | * If the inquiry came of a disk drive which is not part of | |
2255 | * any RAID array, expose it to the kernel. For this to be | |
2256 | * enabled, user must set the "megaraid_expose_unconf_disks" | |
2257 | * flag to 1 by specifying it on module parameter list. | |
2258 | * This would enable data migration off drives from other | |
2259 | * configurations. | |
2260 | */ | |
2261 | islogical = MRAID_IS_LOGICAL(adapter, scp); | |
2262 | if (scp->cmnd[0] == INQUIRY && status == 0 && islogical == 0 | |
2263 | && IS_RAID_CH(raid_dev, scb->dev_channel)) { | |
2264 | ||
32fbac22 | 2265 | sgl = scsi_sglist(scp); |
45711f1a JA |
2266 | if (sg_page(sgl)) { |
2267 | c = *(unsigned char *) sg_virt(&sgl[0]); | |
32fbac22 FT |
2268 | } else { |
2269 | con_log(CL_ANN, (KERN_WARNING | |
2270 | "megaraid mailbox: invalid sg:%d\n", | |
2271 | __LINE__)); | |
2272 | c = 0; | |
1da177e4 LT |
2273 | } |
2274 | ||
2275 | if ((c & 0x1F ) == TYPE_DISK) { | |
2276 | pdev_index = (scb->dev_channel * 16) + | |
2277 | scb->dev_target; | |
2278 | pdev_state = | |
2279 | raid_dev->pdrv_state[pdev_index] & 0x0F; | |
2280 | ||
2281 | if (pdev_state == PDRV_ONLINE || | |
2282 | pdev_state == PDRV_FAILED || | |
2283 | pdev_state == PDRV_RBLD || | |
2284 | pdev_state == PDRV_HOTSPARE || | |
2285 | megaraid_expose_unconf_disks == 0) { | |
2286 | ||
2287 | status = 0xF0; | |
2288 | } | |
2289 | } | |
2290 | } | |
2291 | ||
2292 | // Convert MegaRAID status to Linux error code | |
2293 | switch (status) { | |
2294 | ||
2295 | case 0x00: | |
2296 | ||
2297 | scp->result = (DID_OK << 16); | |
2298 | break; | |
2299 | ||
2300 | case 0x02: | |
2301 | ||
2302 | /* set sense_buffer and result fields */ | |
2303 | if (mbox->cmd == MBOXCMD_PASSTHRU || | |
2304 | mbox->cmd == MBOXCMD_PASSTHRU64) { | |
2305 | ||
2306 | memcpy(scp->sense_buffer, pthru->reqsensearea, | |
2307 | 14); | |
2308 | ||
2309 | scp->result = DRIVER_SENSE << 24 | | |
2310 | DID_OK << 16 | CHECK_CONDITION << 1; | |
2311 | } | |
2312 | else { | |
2313 | if (mbox->cmd == MBOXCMD_EXTPTHRU) { | |
2314 | ||
2315 | memcpy(scp->sense_buffer, | |
2316 | epthru->reqsensearea, 14); | |
2317 | ||
2318 | scp->result = DRIVER_SENSE << 24 | | |
2319 | DID_OK << 16 | | |
2320 | CHECK_CONDITION << 1; | |
2321 | } else { | |
2322 | scp->sense_buffer[0] = 0x70; | |
2323 | scp->sense_buffer[2] = ABORTED_COMMAND; | |
2324 | scp->result = CHECK_CONDITION << 1; | |
2325 | } | |
2326 | } | |
2327 | break; | |
2328 | ||
2329 | case 0x08: | |
2330 | ||
2331 | scp->result = DID_BUS_BUSY << 16 | status; | |
2332 | break; | |
2333 | ||
2334 | default: | |
2335 | ||
2336 | /* | |
2337 | * If TEST_UNIT_READY fails, we know RESERVATION_STATUS | |
2338 | * failed | |
2339 | */ | |
2340 | if (scp->cmnd[0] == TEST_UNIT_READY) { | |
2341 | scp->result = DID_ERROR << 16 | | |
2342 | RESERVATION_CONFLICT << 1; | |
2343 | } | |
2344 | else | |
2345 | /* | |
2346 | * Error code returned is 1 if Reserve or Release | |
2347 | * failed or the input parameter is invalid | |
2348 | */ | |
2349 | if (status == 1 && (scp->cmnd[0] == RESERVE || | |
2350 | scp->cmnd[0] == RELEASE)) { | |
2351 | ||
2352 | scp->result = DID_ERROR << 16 | | |
2353 | RESERVATION_CONFLICT << 1; | |
2354 | } | |
2355 | else { | |
2356 | scp->result = DID_BAD_TARGET << 16 | status; | |
2357 | } | |
2358 | } | |
2359 | ||
2360 | // print a debug message for all failed commands | |
2361 | if (status) { | |
2362 | megaraid_mbox_display_scb(adapter, scb); | |
2363 | } | |
2364 | ||
67d98f0a | 2365 | scsi_dma_unmap(scp); |
1da177e4 LT |
2366 | |
2367 | // remove from local clist | |
2368 | list_del_init(&scb->list); | |
2369 | ||
2370 | // put back in free list | |
2371 | megaraid_dealloc_scb(adapter, scb); | |
2372 | ||
2373 | // send the scsi packet back to kernel | |
1da177e4 | 2374 | scp->scsi_done(scp); |
1da177e4 LT |
2375 | } |
2376 | ||
2377 | return; | |
2378 | } | |
2379 | ||
2380 | ||
2381 | /** | |
2382 | * megaraid_abort_handler - abort the scsi command | |
2383 | * @scp : command to be aborted | |
2384 | * | |
2385 | * Abort a previous SCSI request. Only commands on the pending list can be | |
2386 | * aborted. All the commands issued to the F/W must complete. | |
2387 | **/ | |
2388 | static int | |
f2c8dc40 | 2389 | megaraid_abort_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2390 | { |
2391 | adapter_t *adapter; | |
2392 | mraid_device_t *raid_dev; | |
2393 | scb_t *scb; | |
2394 | scb_t *tmp; | |
2395 | int found; | |
2396 | unsigned long flags; | |
2397 | int i; | |
2398 | ||
2399 | ||
2400 | adapter = SCP2ADAPTER(scp); | |
2401 | raid_dev = ADAP2RAIDDEV(adapter); | |
2402 | ||
1da177e4 | 2403 | con_log(CL_ANN, (KERN_WARNING |
5cd049a5 CH |
2404 | "megaraid: aborting cmd=%x <c=%d t=%d l=%d>\n", |
2405 | scp->cmnd[0], SCP2CHANNEL(scp), | |
1da177e4 LT |
2406 | SCP2TARGET(scp), SCP2LUN(scp))); |
2407 | ||
2408 | // If FW has stopped responding, simply return failure | |
2409 | if (raid_dev->hw_error) { | |
2410 | con_log(CL_ANN, (KERN_NOTICE | |
2411 | "megaraid: hw error, not aborting\n")); | |
2412 | return FAILED; | |
2413 | } | |
2414 | ||
2415 | // There might a race here, where the command was completed by the | |
2416 | // firmware and now it is on the completed list. Before we could | |
2417 | // complete the command to the kernel in dpc, the abort came. | |
2418 | // Find out if this is the case to avoid the race. | |
2419 | scb = NULL; | |
2420 | spin_lock_irqsave(COMPLETED_LIST_LOCK(adapter), flags); | |
2421 | list_for_each_entry_safe(scb, tmp, &adapter->completed_list, list) { | |
2422 | ||
2423 | if (scb->scp == scp) { // Found command | |
2424 | ||
2425 | list_del_init(&scb->list); // from completed list | |
2426 | ||
2427 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2428 | "megaraid: %d[%d:%d], abort from completed list\n", |
2429 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2430 | |
2431 | scp->result = (DID_ABORT << 16); | |
2432 | scp->scsi_done(scp); | |
2433 | ||
2434 | megaraid_dealloc_scb(adapter, scb); | |
2435 | ||
2436 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), | |
2437 | flags); | |
2438 | ||
2439 | return SUCCESS; | |
2440 | } | |
2441 | } | |
2442 | spin_unlock_irqrestore(COMPLETED_LIST_LOCK(adapter), flags); | |
2443 | ||
2444 | ||
2445 | // Find out if this command is still on the pending list. If it is and | |
2446 | // was never issued, abort and return success. If the command is owned | |
2447 | // by the firmware, we must wait for it to complete by the FW. | |
2448 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2449 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
2450 | ||
2451 | if (scb->scp == scp) { // Found command | |
2452 | ||
2453 | list_del_init(&scb->list); // from pending list | |
2454 | ||
2455 | ASSERT(!(scb->state & SCB_ISSUED)); | |
2456 | ||
2457 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2458 | "megaraid abort: [%d:%d], driver owner\n", |
2459 | scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2460 | |
2461 | scp->result = (DID_ABORT << 16); | |
2462 | scp->scsi_done(scp); | |
2463 | ||
2464 | megaraid_dealloc_scb(adapter, scb); | |
2465 | ||
2466 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), | |
2467 | flags); | |
2468 | ||
2469 | return SUCCESS; | |
2470 | } | |
2471 | } | |
2472 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2473 | ||
2474 | ||
2475 | // Check do we even own this command, in which case this would be | |
2476 | // owned by the firmware. The only way to locate the FW scb is to | |
2477 | // traverse through the list of all SCB, since driver does not | |
2478 | // maintain these SCBs on any list | |
2479 | found = 0; | |
f2c8dc40 | 2480 | spin_lock_irq(&adapter->lock); |
1da177e4 LT |
2481 | for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) { |
2482 | scb = adapter->kscb_list + i; | |
2483 | ||
2484 | if (scb->scp == scp) { | |
2485 | ||
2486 | found = 1; | |
2487 | ||
2488 | if (!(scb->state & SCB_ISSUED)) { | |
2489 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2490 | "megaraid abort: %d[%d:%d], invalid state\n", |
2491 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2492 | BUG(); |
2493 | } | |
2494 | else { | |
2495 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2496 | "megaraid abort: %d[%d:%d], fw owner\n", |
2497 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 LT |
2498 | } |
2499 | } | |
2500 | } | |
f2c8dc40 | 2501 | spin_unlock_irq(&adapter->lock); |
1da177e4 LT |
2502 | |
2503 | if (!found) { | |
5cd049a5 | 2504 | con_log(CL_ANN, (KERN_WARNING "megaraid abort: do now own\n")); |
1da177e4 LT |
2505 | |
2506 | // FIXME: Should there be a callback for this command? | |
2507 | return SUCCESS; | |
2508 | } | |
2509 | ||
2510 | // We cannot actually abort a command owned by firmware, return | |
2511 | // failure and wait for reset. In host reset handler, we will find out | |
2512 | // if the HBA is still live | |
2513 | return FAILED; | |
2514 | } | |
2515 | ||
1da177e4 | 2516 | /** |
3948ff8b | 2517 | * megaraid_reset_handler - device reset handler for mailbox based driver |
1da177e4 LT |
2518 | * @scp : reference command |
2519 | * | |
2520 | * Reset handler for the mailbox based controller. First try to find out if | |
2521 | * the FW is still live, in which case the outstanding commands counter mut go | |
2522 | * down to 0. If that happens, also issue the reservation reset command to | |
2523 | * relinquish (possible) reservations on the logical drives connected to this | |
a69b74d3 | 2524 | * host. |
1da177e4 LT |
2525 | **/ |
2526 | static int | |
f2c8dc40 | 2527 | megaraid_reset_handler(struct scsi_cmnd *scp) |
1da177e4 LT |
2528 | { |
2529 | adapter_t *adapter; | |
2530 | scb_t *scb; | |
2531 | scb_t *tmp; | |
2532 | mraid_device_t *raid_dev; | |
2533 | unsigned long flags; | |
2534 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2535 | int rval; | |
2536 | int recovery_window; | |
1da177e4 | 2537 | int i; |
c005fb4f | 2538 | uioc_t *kioc; |
1da177e4 LT |
2539 | |
2540 | adapter = SCP2ADAPTER(scp); | |
2541 | raid_dev = ADAP2RAIDDEV(adapter); | |
2542 | ||
1da177e4 LT |
2543 | // return failure if adapter is not responding |
2544 | if (raid_dev->hw_error) { | |
2545 | con_log(CL_ANN, (KERN_NOTICE | |
2546 | "megaraid: hw error, cannot reset\n")); | |
2547 | return FAILED; | |
2548 | } | |
2549 | ||
1da177e4 LT |
2550 | // Under exceptional conditions, FW can take up to 3 minutes to |
2551 | // complete command processing. Wait for additional 2 minutes for the | |
2552 | // pending commands counter to go down to 0. If it doesn't, let the | |
2553 | // controller be marked offline | |
2554 | // Also, reset all the commands currently owned by the driver | |
2555 | spin_lock_irqsave(PENDING_LIST_LOCK(adapter), flags); | |
2556 | list_for_each_entry_safe(scb, tmp, &adapter->pend_list, list) { | |
1da177e4 LT |
2557 | list_del_init(&scb->list); // from pending list |
2558 | ||
c005fb4f JS |
2559 | if (scb->sno >= MBOX_MAX_SCSI_CMDS) { |
2560 | con_log(CL_ANN, (KERN_WARNING | |
2561 | "megaraid: IOCTL packet with %d[%d:%d] being reset\n", | |
2562 | scb->sno, scb->dev_channel, scb->dev_target)); | |
1da177e4 | 2563 | |
c005fb4f | 2564 | scb->status = -1; |
1da177e4 | 2565 | |
c005fb4f JS |
2566 | kioc = (uioc_t *)scb->gp; |
2567 | kioc->status = -EFAULT; | |
2568 | ||
2569 | megaraid_mbox_mm_done(adapter, scb); | |
2570 | } else { | |
2571 | if (scb->scp == scp) { // Found command | |
2572 | con_log(CL_ANN, (KERN_WARNING | |
5cd049a5 CH |
2573 | "megaraid: %d[%d:%d], reset from pending list\n", |
2574 | scb->sno, scb->dev_channel, scb->dev_target)); | |
c005fb4f JS |
2575 | } else { |
2576 | con_log(CL_ANN, (KERN_WARNING | |
2577 | "megaraid: IO packet with %d[%d:%d] being reset\n", | |
2578 | scb->sno, scb->dev_channel, scb->dev_target)); | |
2579 | } | |
2580 | ||
2581 | scb->scp->result = (DID_RESET << 16); | |
2582 | scb->scp->scsi_done(scb->scp); | |
2583 | ||
2584 | megaraid_dealloc_scb(adapter, scb); | |
2585 | } | |
1da177e4 LT |
2586 | } |
2587 | spin_unlock_irqrestore(PENDING_LIST_LOCK(adapter), flags); | |
2588 | ||
2589 | if (adapter->outstanding_cmds) { | |
2590 | con_log(CL_ANN, (KERN_NOTICE | |
2591 | "megaraid: %d outstanding commands. Max wait %d sec\n", | |
c005fb4f JS |
2592 | adapter->outstanding_cmds, |
2593 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT))); | |
1da177e4 LT |
2594 | } |
2595 | ||
1da177e4 LT |
2596 | recovery_window = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
2597 | ||
c005fb4f | 2598 | for (i = 0; i < recovery_window; i++) { |
1da177e4 LT |
2599 | |
2600 | megaraid_ack_sequence(adapter); | |
2601 | ||
2602 | // print a message once every 5 seconds only | |
2603 | if (!(i % 5)) { | |
2604 | con_log(CL_ANN, ( | |
2605 | "megaraid mbox: Wait for %d commands to complete:%d\n", | |
2606 | adapter->outstanding_cmds, | |
c005fb4f | 2607 | (MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT) - i)); |
1da177e4 LT |
2608 | } |
2609 | ||
25985edc | 2610 | // bailout if no recovery happened in reset time |
c005fb4f | 2611 | if (adapter->outstanding_cmds == 0) { |
1da177e4 LT |
2612 | break; |
2613 | } | |
2614 | ||
2615 | msleep(1000); | |
2616 | } | |
2617 | ||
f2c8dc40 | 2618 | spin_lock(&adapter->lock); |
1da177e4 LT |
2619 | |
2620 | // If still outstanding commands, bail out | |
2621 | if (adapter->outstanding_cmds) { | |
2622 | con_log(CL_ANN, (KERN_WARNING | |
2623 | "megaraid mbox: critical hardware error!\n")); | |
2624 | ||
2625 | raid_dev->hw_error = 1; | |
2626 | ||
f2c8dc40 CH |
2627 | rval = FAILED; |
2628 | goto out; | |
1da177e4 LT |
2629 | } |
2630 | else { | |
2631 | con_log(CL_ANN, (KERN_NOTICE | |
af901ca1 | 2632 | "megaraid mbox: reset sequence completed successfully\n")); |
1da177e4 LT |
2633 | } |
2634 | ||
2635 | ||
2636 | // If the controller supports clustering, reset reservations | |
f2c8dc40 CH |
2637 | if (!adapter->ha) { |
2638 | rval = SUCCESS; | |
2639 | goto out; | |
2640 | } | |
1da177e4 LT |
2641 | |
2642 | // clear reservations if any | |
2643 | raw_mbox[0] = CLUSTER_CMD; | |
2644 | raw_mbox[2] = RESET_RESERVATIONS; | |
2645 | ||
2646 | rval = SUCCESS; | |
2647 | if (mbox_post_sync_cmd_fast(adapter, raw_mbox) == 0) { | |
2648 | con_log(CL_ANN, | |
2649 | (KERN_INFO "megaraid: reservation reset\n")); | |
2650 | } | |
2651 | else { | |
2652 | rval = FAILED; | |
2653 | con_log(CL_ANN, (KERN_WARNING | |
2654 | "megaraid: reservation reset failed\n")); | |
2655 | } | |
2656 | ||
f2c8dc40 | 2657 | out: |
6548b0e5 | 2658 | spin_unlock(&adapter->lock); |
1da177e4 LT |
2659 | return rval; |
2660 | } | |
2661 | ||
1da177e4 LT |
2662 | /* |
2663 | * START: internal commands library | |
2664 | * | |
2665 | * This section of the driver has the common routine used by the driver and | |
2666 | * also has all the FW routines | |
2667 | */ | |
2668 | ||
2669 | /** | |
2670 | * mbox_post_sync_cmd() - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2671 | * @adapter : controller's soft state |
2672 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2673 | * |
2674 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
a69b74d3 | 2675 | * controllers. |
1da177e4 LT |
2676 | */ |
2677 | static int | |
2678 | mbox_post_sync_cmd(adapter_t *adapter, uint8_t raw_mbox[]) | |
2679 | { | |
2680 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
1da177e4 LT |
2681 | mbox_t *mbox; |
2682 | uint8_t status; | |
2683 | int i; | |
2684 | ||
1da177e4 LT |
2685 | mbox = raid_dev->mbox; |
2686 | ||
2687 | /* | |
2688 | * Wait until mailbox is free | |
2689 | */ | |
2690 | if (megaraid_busywait_mbox(raid_dev) != 0) | |
2691 | goto blocked_mailbox; | |
2692 | ||
2693 | /* | |
2694 | * Copy mailbox data into host structure | |
2695 | */ | |
2696 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
2697 | mbox->cmdid = 0xFE; | |
2698 | mbox->busy = 1; | |
2699 | mbox->poll = 0; | |
2700 | mbox->ack = 0; | |
2701 | mbox->numstatus = 0xFF; | |
2702 | mbox->status = 0xFF; | |
2703 | ||
2704 | wmb(); | |
2705 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2706 | ||
2707 | // wait for maximum 1 second for status to post. If the status is not | |
2708 | // available within 1 second, assume FW is initializing and wait | |
2709 | // for an extended amount of time | |
2710 | if (mbox->numstatus == 0xFF) { // status not yet available | |
53b3531b | 2711 | udelay(25); |
1da177e4 LT |
2712 | |
2713 | for (i = 0; mbox->numstatus == 0xFF && i < 1000; i++) { | |
2714 | rmb(); | |
2715 | msleep(1); | |
2716 | } | |
2717 | ||
2718 | ||
2719 | if (i == 1000) { | |
2720 | con_log(CL_ANN, (KERN_NOTICE | |
2721 | "megaraid mailbox: wait for FW to boot ")); | |
2722 | ||
2723 | for (i = 0; (mbox->numstatus == 0xFF) && | |
2724 | (i < MBOX_RESET_WAIT); i++) { | |
2725 | rmb(); | |
2726 | con_log(CL_ANN, ("\b\b\b\b\b[%03d]", | |
2727 | MBOX_RESET_WAIT - i)); | |
2728 | msleep(1000); | |
2729 | } | |
2730 | ||
2731 | if (i == MBOX_RESET_WAIT) { | |
2732 | ||
2733 | con_log(CL_ANN, ( | |
2734 | "\nmegaraid mailbox: status not available\n")); | |
2735 | ||
2736 | return -1; | |
2737 | } | |
2738 | con_log(CL_ANN, ("\b\b\b\b\b[ok] \n")); | |
2739 | } | |
2740 | } | |
2741 | ||
2742 | // wait for maximum 1 second for poll semaphore | |
2743 | if (mbox->poll != 0x77) { | |
2744 | udelay(25); | |
2745 | ||
2746 | for (i = 0; (mbox->poll != 0x77) && (i < 1000); i++) { | |
2747 | rmb(); | |
2748 | msleep(1); | |
2749 | } | |
2750 | ||
2751 | if (i == 1000) { | |
2752 | con_log(CL_ANN, (KERN_WARNING | |
2753 | "megaraid mailbox: could not get poll semaphore\n")); | |
2754 | return -1; | |
2755 | } | |
2756 | } | |
2757 | ||
2758 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2759 | wmb(); | |
2760 | ||
2761 | // wait for maximum 1 second for acknowledgement | |
2762 | if (RDINDOOR(raid_dev) & 0x2) { | |
2763 | udelay(25); | |
2764 | ||
2765 | for (i = 0; (RDINDOOR(raid_dev) & 0x2) && (i < 1000); i++) { | |
2766 | rmb(); | |
2767 | msleep(1); | |
2768 | } | |
2769 | ||
2770 | if (i == 1000) { | |
2771 | con_log(CL_ANN, (KERN_WARNING | |
2772 | "megaraid mailbox: could not acknowledge\n")); | |
2773 | return -1; | |
2774 | } | |
2775 | } | |
2776 | mbox->poll = 0; | |
2777 | mbox->ack = 0x77; | |
2778 | ||
2779 | status = mbox->status; | |
2780 | ||
2781 | // invalidate the completed command id array. After command | |
2782 | // completion, firmware would write the valid id. | |
2783 | mbox->numstatus = 0xFF; | |
2784 | mbox->status = 0xFF; | |
2785 | for (i = 0; i < MBOX_MAX_FIRMWARE_STATUS; i++) { | |
2786 | mbox->completed[i] = 0xFF; | |
2787 | } | |
2788 | ||
2789 | return status; | |
2790 | ||
2791 | blocked_mailbox: | |
2792 | ||
2793 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n") ); | |
2794 | return -1; | |
2795 | } | |
2796 | ||
2797 | ||
2798 | /** | |
2799 | * mbox_post_sync_cmd_fast - blocking command to the mailbox based controllers | |
a69b74d3 RD |
2800 | * @adapter : controller's soft state |
2801 | * @raw_mbox : the mailbox | |
1da177e4 LT |
2802 | * |
2803 | * Issue a scb in synchronous and non-interrupt mode for mailbox based | |
2804 | * controllers. This is a faster version of the synchronous command and | |
a69b74d3 | 2805 | * therefore can be called in interrupt-context as well. |
1da177e4 LT |
2806 | */ |
2807 | static int | |
2808 | mbox_post_sync_cmd_fast(adapter_t *adapter, uint8_t raw_mbox[]) | |
2809 | { | |
2810 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2811 | mbox_t *mbox; | |
2812 | long i; | |
2813 | ||
2814 | ||
2815 | mbox = raid_dev->mbox; | |
2816 | ||
2817 | // return immediately if the mailbox is busy | |
2818 | if (mbox->busy) return -1; | |
2819 | ||
2820 | // Copy mailbox data into host structure | |
2821 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 14); | |
2822 | mbox->cmdid = 0xFE; | |
2823 | mbox->busy = 1; | |
2824 | mbox->poll = 0; | |
2825 | mbox->ack = 0; | |
2826 | mbox->numstatus = 0xFF; | |
2827 | mbox->status = 0xFF; | |
2828 | ||
2829 | wmb(); | |
2830 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
2831 | ||
c005fb4f | 2832 | for (i = 0; i < MBOX_SYNC_WAIT_CNT; i++) { |
1da177e4 | 2833 | if (mbox->numstatus != 0xFF) break; |
ed7e8ef7 | 2834 | rmb(); |
c005fb4f | 2835 | udelay(MBOX_SYNC_DELAY_200); |
1da177e4 LT |
2836 | } |
2837 | ||
c005fb4f | 2838 | if (i == MBOX_SYNC_WAIT_CNT) { |
1da177e4 LT |
2839 | // We may need to re-calibrate the counter |
2840 | con_log(CL_ANN, (KERN_CRIT | |
2841 | "megaraid: fast sync command timed out\n")); | |
2842 | } | |
2843 | ||
2844 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x2); | |
2845 | wmb(); | |
2846 | ||
2847 | return mbox->status; | |
2848 | } | |
2849 | ||
2850 | ||
2851 | /** | |
2852 | * megaraid_busywait_mbox() - Wait until the controller's mailbox is available | |
a69b74d3 | 2853 | * @raid_dev : RAID device (HBA) soft state |
1da177e4 | 2854 | * |
a69b74d3 RD |
2855 | * Wait until the controller's mailbox is available to accept more commands. |
2856 | * Wait for at most 1 second. | |
1da177e4 LT |
2857 | */ |
2858 | static int | |
2859 | megaraid_busywait_mbox(mraid_device_t *raid_dev) | |
2860 | { | |
2861 | mbox_t *mbox = raid_dev->mbox; | |
2862 | int i = 0; | |
2863 | ||
2864 | if (mbox->busy) { | |
2865 | udelay(25); | |
2866 | for (i = 0; mbox->busy && i < 1000; i++) | |
2867 | msleep(1); | |
2868 | } | |
2869 | ||
2870 | if (i < 1000) return 0; | |
2871 | else return -1; | |
2872 | } | |
2873 | ||
2874 | ||
2875 | /** | |
2876 | * megaraid_mbox_product_info - some static information about the controller | |
a69b74d3 | 2877 | * @adapter : our soft state |
1da177e4 | 2878 | * |
a69b74d3 | 2879 | * Issue commands to the controller to grab some parameters required by our |
1da177e4 LT |
2880 | * caller. |
2881 | */ | |
2882 | static int | |
2883 | megaraid_mbox_product_info(adapter_t *adapter) | |
2884 | { | |
2885 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
2886 | mbox_t *mbox; | |
2887 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
2888 | mraid_pinfo_t *pinfo; | |
2889 | dma_addr_t pinfo_dma_h; | |
2890 | mraid_inquiry3_t *mraid_inq3; | |
2891 | int i; | |
2892 | ||
2893 | ||
2894 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
2895 | mbox = (mbox_t *)raw_mbox; | |
2896 | ||
2897 | /* | |
2898 | * Issue an ENQUIRY3 command to find out certain adapter parameters, | |
2899 | * e.g., max channels, max commands etc. | |
2900 | */ | |
750afb08 LC |
2901 | pinfo = dma_alloc_coherent(&adapter->pdev->dev, sizeof(mraid_pinfo_t), |
2902 | &pinfo_dma_h, GFP_KERNEL); | |
1da177e4 LT |
2903 | if (pinfo == NULL) { |
2904 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 2905 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
2906 | __LINE__)); |
2907 | ||
2908 | return -1; | |
2909 | } | |
1da177e4 LT |
2910 | |
2911 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
2912 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
2913 | ||
2914 | raw_mbox[0] = FC_NEW_CONFIG; | |
2915 | raw_mbox[2] = NC_SUBOP_ENQUIRY3; | |
2916 | raw_mbox[3] = ENQ3_GET_SOLICITED_FULL; | |
2917 | ||
2918 | // Issue the command | |
2919 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
2920 | ||
2921 | con_log(CL_ANN, (KERN_WARNING "megaraid: Inquiry3 failed\n")); | |
2922 | ||
66e3a241 | 2923 | dma_free_coherent(&adapter->pdev->dev, sizeof(mraid_pinfo_t), |
1da177e4 LT |
2924 | pinfo, pinfo_dma_h); |
2925 | ||
2926 | return -1; | |
2927 | } | |
2928 | ||
2929 | /* | |
2930 | * Collect information about state of each physical drive | |
2931 | * attached to the controller. We will expose all the disks | |
2932 | * which are not part of RAID | |
2933 | */ | |
2934 | mraid_inq3 = (mraid_inquiry3_t *)adapter->ibuf; | |
2935 | for (i = 0; i < MBOX_MAX_PHYSICAL_DRIVES; i++) { | |
2936 | raid_dev->pdrv_state[i] = mraid_inq3->pdrv_state[i]; | |
2937 | } | |
2938 | ||
2939 | /* | |
2940 | * Get product info for information like number of channels, | |
2941 | * maximum commands supported. | |
2942 | */ | |
2943 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
2944 | mbox->xferaddr = (uint32_t)pinfo_dma_h; | |
2945 | ||
2946 | raw_mbox[0] = FC_NEW_CONFIG; | |
2947 | raw_mbox[2] = NC_SUBOP_PRODUCT_INFO; | |
2948 | ||
2949 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
2950 | ||
2951 | con_log(CL_ANN, (KERN_WARNING | |
2952 | "megaraid: product info failed\n")); | |
2953 | ||
66e3a241 | 2954 | dma_free_coherent(&adapter->pdev->dev, sizeof(mraid_pinfo_t), |
1da177e4 LT |
2955 | pinfo, pinfo_dma_h); |
2956 | ||
2957 | return -1; | |
2958 | } | |
2959 | ||
2960 | /* | |
2961 | * Setup some parameters for host, as required by our caller | |
2962 | */ | |
2963 | adapter->max_channel = pinfo->nchannels; | |
2964 | ||
2965 | /* | |
2966 | * we will export all the logical drives on a single channel. | |
2967 | * Add 1 since inquires do not come for inititor ID | |
2968 | */ | |
2969 | adapter->max_target = MAX_LOGICAL_DRIVES_40LD + 1; | |
2970 | adapter->max_lun = 8; // up to 8 LUNs for non-disk devices | |
2971 | ||
2972 | /* | |
2973 | * These are the maximum outstanding commands for the scsi-layer | |
2974 | */ | |
2975 | adapter->max_cmds = MBOX_MAX_SCSI_CMDS; | |
2976 | ||
2977 | memset(adapter->fw_version, 0, VERSION_SIZE); | |
2978 | memset(adapter->bios_version, 0, VERSION_SIZE); | |
2979 | ||
2980 | memcpy(adapter->fw_version, pinfo->fw_version, 4); | |
2981 | adapter->fw_version[4] = 0; | |
2982 | ||
2983 | memcpy(adapter->bios_version, pinfo->bios_version, 4); | |
2984 | adapter->bios_version[4] = 0; | |
2985 | ||
2986 | con_log(CL_ANN, (KERN_NOTICE | |
2987 | "megaraid: fw version:[%s] bios version:[%s]\n", | |
2988 | adapter->fw_version, adapter->bios_version)); | |
2989 | ||
66e3a241 | 2990 | dma_free_coherent(&adapter->pdev->dev, sizeof(mraid_pinfo_t), pinfo, |
1da177e4 LT |
2991 | pinfo_dma_h); |
2992 | ||
2993 | return 0; | |
2994 | } | |
2995 | ||
2996 | ||
2997 | ||
2998 | /** | |
2999 | * megaraid_mbox_extended_cdb - check for support for extended CDBs | |
a69b74d3 | 3000 | * @adapter : soft state for the controller |
1da177e4 | 3001 | * |
a69b74d3 RD |
3002 | * This routine check whether the controller in question supports extended |
3003 | * ( > 10 bytes ) CDBs. | |
1da177e4 LT |
3004 | */ |
3005 | static int | |
3006 | megaraid_mbox_extended_cdb(adapter_t *adapter) | |
3007 | { | |
3008 | mbox_t *mbox; | |
3009 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3010 | int rval; | |
3011 | ||
3012 | mbox = (mbox_t *)raw_mbox; | |
3013 | ||
3014 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3015 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3016 | ||
3017 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3018 | ||
3019 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3020 | raw_mbox[2] = SUPPORT_EXT_CDB; | |
3021 | ||
3022 | /* | |
3023 | * Issue the command | |
3024 | */ | |
3025 | rval = 0; | |
3026 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3027 | rval = -1; | |
3028 | } | |
3029 | ||
3030 | return rval; | |
3031 | } | |
3032 | ||
3033 | ||
3034 | /** | |
3035 | * megaraid_mbox_support_ha - Do we support clustering | |
a69b74d3 RD |
3036 | * @adapter : soft state for the controller |
3037 | * @init_id : ID of the initiator | |
1da177e4 LT |
3038 | * |
3039 | * Determine if the firmware supports clustering and the ID of the initiator. | |
3040 | */ | |
3041 | static int | |
3042 | megaraid_mbox_support_ha(adapter_t *adapter, uint16_t *init_id) | |
3043 | { | |
3044 | mbox_t *mbox; | |
3045 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3046 | int rval; | |
3047 | ||
3048 | ||
3049 | mbox = (mbox_t *)raw_mbox; | |
3050 | ||
3051 | memset((caddr_t)raw_mbox, 0, sizeof(raw_mbox)); | |
3052 | ||
3053 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3054 | ||
3055 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3056 | ||
3057 | raw_mbox[0] = GET_TARGET_ID; | |
3058 | ||
3059 | // Issue the command | |
3060 | *init_id = 7; | |
3061 | rval = -1; | |
3062 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3063 | ||
3064 | *init_id = *(uint8_t *)adapter->ibuf; | |
3065 | ||
3066 | con_log(CL_ANN, (KERN_INFO | |
3067 | "megaraid: cluster firmware, initiator ID: %d\n", | |
3068 | *init_id)); | |
3069 | ||
3070 | rval = 0; | |
3071 | } | |
3072 | ||
3073 | return rval; | |
3074 | } | |
3075 | ||
3076 | ||
3077 | /** | |
3078 | * megaraid_mbox_support_random_del - Do we support random deletion | |
a69b74d3 | 3079 | * @adapter : soft state for the controller |
1da177e4 | 3080 | * |
a69b74d3 | 3081 | * Determine if the firmware supports random deletion. |
1da177e4 LT |
3082 | * Return: 1 is operation supported, 0 otherwise |
3083 | */ | |
3084 | static int | |
3085 | megaraid_mbox_support_random_del(adapter_t *adapter) | |
3086 | { | |
1da177e4 LT |
3087 | uint8_t raw_mbox[sizeof(mbox_t)]; |
3088 | int rval; | |
3089 | ||
69cd39e9 HR |
3090 | /* |
3091 | * Newer firmware on Dell CERC expect a different | |
3092 | * random deletion handling, so disable it. | |
3093 | */ | |
3094 | if (adapter->pdev->vendor == PCI_VENDOR_ID_AMI && | |
3095 | adapter->pdev->device == PCI_DEVICE_ID_AMI_MEGARAID3 && | |
3096 | adapter->pdev->subsystem_vendor == PCI_VENDOR_ID_DELL && | |
3097 | adapter->pdev->subsystem_device == PCI_SUBSYS_ID_CERC_ATA100_4CH && | |
3098 | (adapter->fw_version[0] > '6' || | |
3099 | (adapter->fw_version[0] == '6' && | |
3100 | adapter->fw_version[2] > '6') || | |
3101 | (adapter->fw_version[0] == '6' | |
3102 | && adapter->fw_version[2] == '6' | |
3103 | && adapter->fw_version[3] > '1'))) { | |
3104 | con_log(CL_DLEVEL1, ("megaraid: disable random deletion\n")); | |
3105 | return 0; | |
3106 | } | |
1da177e4 | 3107 | |
1da177e4 LT |
3108 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
3109 | ||
3110 | raw_mbox[0] = FC_DEL_LOGDRV; | |
3111 | raw_mbox[2] = OP_SUP_DEL_LOGDRV; | |
3112 | ||
3113 | // Issue the command | |
3114 | rval = 0; | |
3115 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3116 | ||
3117 | con_log(CL_DLEVEL1, ("megaraid: supports random deletion\n")); | |
3118 | ||
3119 | rval = 1; | |
3120 | } | |
3121 | ||
3122 | return rval; | |
3123 | } | |
3124 | ||
3125 | ||
3126 | /** | |
3127 | * megaraid_mbox_get_max_sg - maximum sg elements supported by the firmware | |
a69b74d3 | 3128 | * @adapter : soft state for the controller |
1da177e4 LT |
3129 | * |
3130 | * Find out the maximum number of scatter-gather elements supported by the | |
a69b74d3 | 3131 | * firmware. |
1da177e4 LT |
3132 | */ |
3133 | static int | |
3134 | megaraid_mbox_get_max_sg(adapter_t *adapter) | |
3135 | { | |
3136 | mbox_t *mbox; | |
3137 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3138 | int nsg; | |
3139 | ||
3140 | ||
3141 | mbox = (mbox_t *)raw_mbox; | |
3142 | ||
3143 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3144 | ||
3145 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3146 | ||
3147 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3148 | ||
3149 | raw_mbox[0] = MAIN_MISC_OPCODE; | |
3150 | raw_mbox[2] = GET_MAX_SG_SUPPORT; | |
3151 | ||
3152 | // Issue the command | |
3153 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3154 | nsg = *(uint8_t *)adapter->ibuf; | |
3155 | } | |
3156 | else { | |
3157 | nsg = MBOX_DEFAULT_SG_SIZE; | |
3158 | } | |
3159 | ||
3160 | if (nsg > MBOX_MAX_SG_SIZE) nsg = MBOX_MAX_SG_SIZE; | |
3161 | ||
3162 | return nsg; | |
3163 | } | |
3164 | ||
3165 | ||
3166 | /** | |
3167 | * megaraid_mbox_enum_raid_scsi - enumerate the RAID and SCSI channels | |
a69b74d3 | 3168 | * @adapter : soft state for the controller |
1da177e4 | 3169 | * |
a69b74d3 RD |
3170 | * Enumerate the RAID and SCSI channels for ROMB platforms so that channels |
3171 | * can be exported as regular SCSI channels. | |
1da177e4 LT |
3172 | */ |
3173 | static void | |
3174 | megaraid_mbox_enum_raid_scsi(adapter_t *adapter) | |
3175 | { | |
3176 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3177 | mbox_t *mbox; | |
3178 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3179 | ||
3180 | ||
3181 | mbox = (mbox_t *)raw_mbox; | |
3182 | ||
3183 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3184 | ||
3185 | mbox->xferaddr = (uint32_t)adapter->ibuf_dma_h; | |
3186 | ||
3187 | memset((void *)adapter->ibuf, 0, MBOX_IBUF_SIZE); | |
3188 | ||
3189 | raw_mbox[0] = CHNL_CLASS; | |
3190 | raw_mbox[2] = GET_CHNL_CLASS; | |
3191 | ||
3192 | // Issue the command. If the command fails, all channels are RAID | |
3193 | // channels | |
3194 | raid_dev->channel_class = 0xFF; | |
3195 | if (mbox_post_sync_cmd(adapter, raw_mbox) == 0) { | |
3196 | raid_dev->channel_class = *(uint8_t *)adapter->ibuf; | |
3197 | } | |
3198 | ||
3199 | return; | |
3200 | } | |
3201 | ||
3202 | ||
3203 | /** | |
3204 | * megaraid_mbox_flush_cache - flush adapter and disks cache | |
a69b74d3 | 3205 | * @adapter : soft state for the controller |
1da177e4 | 3206 | * |
a69b74d3 | 3207 | * Flush adapter cache followed by disks cache. |
1da177e4 LT |
3208 | */ |
3209 | static void | |
3210 | megaraid_mbox_flush_cache(adapter_t *adapter) | |
3211 | { | |
1da177e4 LT |
3212 | uint8_t raw_mbox[sizeof(mbox_t)]; |
3213 | ||
1da177e4 LT |
3214 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); |
3215 | ||
3216 | raw_mbox[0] = FLUSH_ADAPTER; | |
3217 | ||
3218 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3219 | con_log(CL_ANN, ("megaraid: flush adapter failed\n")); | |
3220 | } | |
3221 | ||
3222 | raw_mbox[0] = FLUSH_SYSTEM; | |
3223 | ||
3224 | if (mbox_post_sync_cmd(adapter, raw_mbox) != 0) { | |
3225 | con_log(CL_ANN, ("megaraid: flush disks cache failed\n")); | |
3226 | } | |
3227 | ||
3228 | return; | |
3229 | } | |
3230 | ||
3231 | ||
cd96d96f SP |
3232 | /** |
3233 | * megaraid_mbox_fire_sync_cmd - fire the sync cmd | |
a69b74d3 | 3234 | * @adapter : soft state for the controller |
cd96d96f | 3235 | * |
a69b74d3 | 3236 | * Clears the pending cmds in FW and reinits its RAID structs. |
cd96d96f SP |
3237 | */ |
3238 | static int | |
3239 | megaraid_mbox_fire_sync_cmd(adapter_t *adapter) | |
3240 | { | |
3241 | mbox_t *mbox; | |
3242 | uint8_t raw_mbox[sizeof(mbox_t)]; | |
3243 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
cd96d96f SP |
3244 | int status = 0; |
3245 | int i; | |
3246 | uint32_t dword; | |
3247 | ||
3248 | mbox = (mbox_t *)raw_mbox; | |
3249 | ||
3250 | memset((caddr_t)raw_mbox, 0, sizeof(mbox_t)); | |
3251 | ||
3252 | raw_mbox[0] = 0xFF; | |
3253 | ||
cd96d96f SP |
3254 | mbox = raid_dev->mbox; |
3255 | ||
3256 | /* Wait until mailbox is free */ | |
3257 | if (megaraid_busywait_mbox(raid_dev) != 0) { | |
3258 | status = 1; | |
3259 | goto blocked_mailbox; | |
3260 | } | |
3261 | ||
3262 | /* Copy mailbox data into host structure */ | |
3263 | memcpy((caddr_t)mbox, (caddr_t)raw_mbox, 16); | |
3264 | mbox->cmdid = 0xFE; | |
3265 | mbox->busy = 1; | |
3266 | mbox->poll = 0; | |
3267 | mbox->ack = 0; | |
3268 | mbox->numstatus = 0; | |
3269 | mbox->status = 0; | |
3270 | ||
3271 | wmb(); | |
3272 | WRINDOOR(raid_dev, raid_dev->mbox_dma | 0x1); | |
3273 | ||
3274 | /* Wait for maximum 1 min for status to post. | |
3275 | * If the Firmware SUPPORTS the ABOVE COMMAND, | |
3276 | * mbox->cmd will be set to 0 | |
3277 | * else | |
3278 | * the firmware will reject the command with | |
3279 | * mbox->numstatus set to 1 | |
3280 | */ | |
3281 | ||
3282 | i = 0; | |
3283 | status = 0; | |
3284 | while (!mbox->numstatus && mbox->cmd == 0xFF) { | |
3285 | rmb(); | |
3286 | msleep(1); | |
3287 | i++; | |
3288 | if (i > 1000 * 60) { | |
3289 | status = 1; | |
3290 | break; | |
3291 | } | |
3292 | } | |
3293 | if (mbox->numstatus == 1) | |
3294 | status = 1; /*cmd not supported*/ | |
3295 | ||
3296 | /* Check for interrupt line */ | |
3297 | dword = RDOUTDOOR(raid_dev); | |
3298 | WROUTDOOR(raid_dev, dword); | |
3299 | WRINDOOR(raid_dev,2); | |
3300 | ||
3301 | return status; | |
3302 | ||
3303 | blocked_mailbox: | |
3304 | con_log(CL_ANN, (KERN_WARNING "megaraid: blocked mailbox\n")); | |
3305 | return status; | |
3306 | } | |
3307 | ||
1da177e4 LT |
3308 | /** |
3309 | * megaraid_mbox_display_scb - display SCB information, mostly debug purposes | |
a69b74d3 RD |
3310 | * @adapter : controller's soft state |
3311 | * @scb : SCB to be displayed | |
3312 | * @level : debug level for console print | |
1da177e4 LT |
3313 | * |
3314 | * Diplay information about the given SCB iff the current debug level is | |
a69b74d3 | 3315 | * verbose. |
1da177e4 LT |
3316 | */ |
3317 | static void | |
3318 | megaraid_mbox_display_scb(adapter_t *adapter, scb_t *scb) | |
3319 | { | |
3320 | mbox_ccb_t *ccb; | |
3321 | struct scsi_cmnd *scp; | |
3322 | mbox_t *mbox; | |
3323 | int level; | |
3324 | int i; | |
3325 | ||
3326 | ||
3327 | ccb = (mbox_ccb_t *)scb->ccb; | |
3328 | scp = scb->scp; | |
3329 | mbox = ccb->mbox; | |
3330 | ||
3331 | level = CL_DLEVEL3; | |
3332 | ||
3333 | con_log(level, (KERN_NOTICE | |
3334 | "megaraid mailbox: status:%#x cmd:%#x id:%#x ", scb->status, | |
3335 | mbox->cmd, scb->sno)); | |
3336 | ||
3337 | con_log(level, ("sec:%#x lba:%#x addr:%#x ld:%d sg:%d\n", | |
3338 | mbox->numsectors, mbox->lba, mbox->xferaddr, mbox->logdrv, | |
3339 | mbox->numsge)); | |
3340 | ||
3341 | if (!scp) return; | |
3342 | ||
3343 | con_log(level, (KERN_NOTICE "scsi cmnd: ")); | |
3344 | ||
3345 | for (i = 0; i < scp->cmd_len; i++) { | |
3346 | con_log(level, ("%#2.02x ", scp->cmnd[i])); | |
3347 | } | |
3348 | ||
3349 | con_log(level, ("\n")); | |
3350 | ||
3351 | return; | |
3352 | } | |
3353 | ||
3354 | ||
3355 | /** | |
3356 | * megaraid_mbox_setup_device_map - manage device ids | |
3357 | * @adapter : Driver's soft state | |
3358 | * | |
3948ff8b | 3359 | * Manage the device ids to have an appropriate mapping between the kernel |
1da177e4 LT |
3360 | * scsi addresses and megaraid scsi and logical drive addresses. We export |
3361 | * scsi devices on their actual addresses, whereas the logical drives are | |
3362 | * exported on a virtual scsi channel. | |
a69b74d3 | 3363 | */ |
1da177e4 LT |
3364 | static void |
3365 | megaraid_mbox_setup_device_map(adapter_t *adapter) | |
3366 | { | |
3367 | uint8_t c; | |
3368 | uint8_t t; | |
3369 | ||
3370 | /* | |
3371 | * First fill the values on the logical drive channel | |
3372 | */ | |
3373 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3374 | adapter->device_ids[adapter->max_channel][t] = | |
3375 | (t < adapter->init_id) ? t : t - 1; | |
3376 | ||
3377 | adapter->device_ids[adapter->max_channel][adapter->init_id] = 0xFF; | |
3378 | ||
3379 | /* | |
3380 | * Fill the values on the physical devices channels | |
3381 | */ | |
3382 | for (c = 0; c < adapter->max_channel; c++) | |
3383 | for (t = 0; t < LSI_MAX_LOGICAL_DRIVES_64LD; t++) | |
3384 | adapter->device_ids[c][t] = (c << 8) | t; | |
3385 | } | |
3386 | ||
3387 | ||
3388 | /* | |
3389 | * END: internal commands library | |
3390 | */ | |
3391 | ||
3392 | /* | |
3393 | * START: Interface for the common management module | |
3394 | * | |
b1c11812 | 3395 | * This is the module, which interfaces with the common management module to |
1da177e4 LT |
3396 | * provide support for ioctl and sysfs |
3397 | */ | |
3398 | ||
3399 | /** | |
b1c11812 | 3400 | * megaraid_cmm_register - register with the management module |
a69b74d3 | 3401 | * @adapter : HBA soft state |
1da177e4 LT |
3402 | * |
3403 | * Register with the management module, which allows applications to issue | |
3404 | * ioctl calls to the drivers. This interface is used by the management module | |
3405 | * to setup sysfs support as well. | |
3406 | */ | |
3407 | static int | |
3408 | megaraid_cmm_register(adapter_t *adapter) | |
3409 | { | |
3410 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3411 | mraid_mmadp_t adp; | |
3412 | scb_t *scb; | |
3413 | mbox_ccb_t *ccb; | |
3414 | int rval; | |
3415 | int i; | |
3416 | ||
3417 | // Allocate memory for the base list of scb for management module. | |
dd00cc48 | 3418 | adapter->uscb_list = kcalloc(MBOX_MAX_USER_CMDS, sizeof(scb_t), GFP_KERNEL); |
1da177e4 LT |
3419 | |
3420 | if (adapter->uscb_list == NULL) { | |
3421 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 3422 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
3423 | __LINE__)); |
3424 | return -1; | |
3425 | } | |
1da177e4 LT |
3426 | |
3427 | ||
3428 | // Initialize the synchronization parameters for resources for | |
3429 | // commands for management module | |
3430 | INIT_LIST_HEAD(&adapter->uscb_pool); | |
3431 | ||
3432 | spin_lock_init(USER_FREE_LIST_LOCK(adapter)); | |
3433 | ||
3434 | ||
3435 | ||
3436 | // link all the packets. Note, CCB for commands, coming from the | |
3437 | // commom management module, mailbox physical address are already | |
3438 | // setup by it. We just need placeholder for that in our local command | |
3439 | // control blocks | |
3440 | for (i = 0; i < MBOX_MAX_USER_CMDS; i++) { | |
3441 | ||
3442 | scb = adapter->uscb_list + i; | |
3443 | ccb = raid_dev->uccb_list + i; | |
3444 | ||
3445 | scb->ccb = (caddr_t)ccb; | |
3446 | ccb->mbox64 = raid_dev->umbox64 + i; | |
3447 | ccb->mbox = &ccb->mbox64->mbox32; | |
3448 | ccb->raw_mbox = (uint8_t *)ccb->mbox; | |
3449 | ||
3450 | scb->gp = 0; | |
3451 | ||
3452 | // COMMAND ID 0 - (MBOX_MAX_SCSI_CMDS-1) ARE RESERVED FOR | |
3453 | // COMMANDS COMING FROM IO SUBSYSTEM (MID-LAYER) | |
3454 | scb->sno = i + MBOX_MAX_SCSI_CMDS; | |
3455 | ||
3456 | scb->scp = NULL; | |
3457 | scb->state = SCB_FREE; | |
66e3a241 | 3458 | scb->dma_direction = DMA_NONE; |
1da177e4 LT |
3459 | scb->dma_type = MRAID_DMA_NONE; |
3460 | scb->dev_channel = -1; | |
3461 | scb->dev_target = -1; | |
3462 | ||
3463 | // put scb in the free pool | |
3464 | list_add_tail(&scb->list, &adapter->uscb_pool); | |
3465 | } | |
3466 | ||
3467 | adp.unique_id = adapter->unique_id; | |
3468 | adp.drvr_type = DRVRTYPE_MBOX; | |
3469 | adp.drvr_data = (unsigned long)adapter; | |
3470 | adp.pdev = adapter->pdev; | |
3471 | adp.issue_uioc = megaraid_mbox_mm_handler; | |
c005fb4f | 3472 | adp.timeout = MBOX_RESET_WAIT + MBOX_RESET_EXT_WAIT; |
1da177e4 LT |
3473 | adp.max_kioc = MBOX_MAX_USER_CMDS; |
3474 | ||
3475 | if ((rval = mraid_mm_register_adp(&adp)) != 0) { | |
3476 | ||
3477 | con_log(CL_ANN, (KERN_WARNING | |
3478 | "megaraid mbox: did not register with CMM\n")); | |
3479 | ||
3480 | kfree(adapter->uscb_list); | |
3481 | } | |
3482 | ||
3483 | return rval; | |
3484 | } | |
3485 | ||
3486 | ||
3487 | /** | |
b1c11812 | 3488 | * megaraid_cmm_unregister - un-register with the management module |
a69b74d3 | 3489 | * @adapter : HBA soft state |
1da177e4 LT |
3490 | * |
3491 | * Un-register with the management module. | |
3492 | * FIXME: mgmt module must return failure for unregister if it has pending | |
a69b74d3 | 3493 | * commands in LLD. |
1da177e4 LT |
3494 | */ |
3495 | static int | |
3496 | megaraid_cmm_unregister(adapter_t *adapter) | |
3497 | { | |
3498 | kfree(adapter->uscb_list); | |
3499 | mraid_mm_unregister_adp(adapter->unique_id); | |
3500 | return 0; | |
3501 | } | |
3502 | ||
3503 | ||
3504 | /** | |
3505 | * megaraid_mbox_mm_handler - interface for CMM to issue commands to LLD | |
a69b74d3 RD |
3506 | * @drvr_data : LLD specific data |
3507 | * @kioc : CMM interface packet | |
3508 | * @action : command action | |
1da177e4 | 3509 | * |
b1c11812 | 3510 | * This routine is invoked whenever the Common Management Module (CMM) has a |
1da177e4 LT |
3511 | * command for us. The 'action' parameter specifies if this is a new command |
3512 | * or otherwise. | |
3513 | */ | |
3514 | static int | |
3515 | megaraid_mbox_mm_handler(unsigned long drvr_data, uioc_t *kioc, uint32_t action) | |
3516 | { | |
3517 | adapter_t *adapter; | |
3518 | ||
3519 | if (action != IOCTL_ISSUE) { | |
3520 | con_log(CL_ANN, (KERN_WARNING | |
3521 | "megaraid: unsupported management action:%#2x\n", | |
3522 | action)); | |
3523 | return (-ENOTSUPP); | |
3524 | } | |
3525 | ||
3526 | adapter = (adapter_t *)drvr_data; | |
3527 | ||
3528 | // make sure this adapter is not being detached right now. | |
3529 | if (atomic_read(&adapter->being_detached)) { | |
3530 | con_log(CL_ANN, (KERN_WARNING | |
3531 | "megaraid: reject management request, detaching\n")); | |
3532 | return (-ENODEV); | |
3533 | } | |
3534 | ||
3535 | switch (kioc->opcode) { | |
3536 | ||
3537 | case GET_ADAP_INFO: | |
3538 | ||
3539 | kioc->status = gather_hbainfo(adapter, (mraid_hba_info_t *) | |
3540 | (unsigned long)kioc->buf_vaddr); | |
3541 | ||
3542 | kioc->done(kioc); | |
3543 | ||
3544 | return kioc->status; | |
3545 | ||
3546 | case MBOX_CMD: | |
3547 | ||
3548 | return megaraid_mbox_mm_command(adapter, kioc); | |
3549 | ||
3550 | default: | |
3551 | kioc->status = (-EINVAL); | |
3552 | kioc->done(kioc); | |
3553 | return (-EINVAL); | |
3554 | } | |
3555 | ||
3556 | return 0; // not reached | |
3557 | } | |
3558 | ||
3559 | /** | |
3560 | * megaraid_mbox_mm_command - issues commands routed through CMM | |
a69b74d3 RD |
3561 | * @adapter : HBA soft state |
3562 | * @kioc : management command packet | |
1da177e4 LT |
3563 | * |
3564 | * Issues commands, which are routed through the management module. | |
3565 | */ | |
3566 | static int | |
3567 | megaraid_mbox_mm_command(adapter_t *adapter, uioc_t *kioc) | |
3568 | { | |
3569 | struct list_head *head = &adapter->uscb_pool; | |
3570 | mbox64_t *mbox64; | |
3571 | uint8_t *raw_mbox; | |
3572 | scb_t *scb; | |
3573 | mbox_ccb_t *ccb; | |
3574 | unsigned long flags; | |
3575 | ||
3576 | // detach one scb from free pool | |
3577 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3578 | ||
3579 | if (list_empty(head)) { // should never happen because of CMM | |
3580 | ||
3581 | con_log(CL_ANN, (KERN_WARNING | |
3582 | "megaraid mbox: bug in cmm handler, lost resources\n")); | |
3583 | ||
3584 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3585 | ||
3586 | return (-EINVAL); | |
3587 | } | |
3588 | ||
3589 | scb = list_entry(head->next, scb_t, list); | |
3590 | list_del_init(&scb->list); | |
3591 | ||
3592 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3593 | ||
3594 | scb->state = SCB_ACTIVE; | |
3595 | scb->dma_type = MRAID_DMA_NONE; | |
66e3a241 | 3596 | scb->dma_direction = DMA_NONE; |
1da177e4 LT |
3597 | |
3598 | ccb = (mbox_ccb_t *)scb->ccb; | |
3599 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; | |
3600 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3601 | ||
3602 | memcpy(ccb->mbox64, mbox64, sizeof(mbox64_t)); | |
3603 | ||
3604 | scb->gp = (unsigned long)kioc; | |
3605 | ||
3606 | /* | |
3607 | * If it is a logdrv random delete operation, we have to wait till | |
3608 | * there are no outstanding cmds at the fw and then issue it directly | |
3609 | */ | |
3610 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3611 | ||
3612 | if (wait_till_fw_empty(adapter)) { | |
3613 | con_log(CL_ANN, (KERN_NOTICE | |
3614 | "megaraid mbox: LD delete, timed out\n")); | |
3615 | ||
3616 | kioc->status = -ETIME; | |
3617 | ||
3618 | scb->status = -1; | |
3619 | ||
3620 | megaraid_mbox_mm_done(adapter, scb); | |
3621 | ||
3622 | return (-ETIME); | |
3623 | } | |
3624 | ||
3625 | INIT_LIST_HEAD(&scb->list); | |
3626 | ||
3627 | scb->state = SCB_ISSUED; | |
3628 | if (mbox_post_cmd(adapter, scb) != 0) { | |
3629 | ||
3630 | con_log(CL_ANN, (KERN_NOTICE | |
3631 | "megaraid mbox: LD delete, mailbox busy\n")); | |
3632 | ||
3633 | kioc->status = -EBUSY; | |
3634 | ||
3635 | scb->status = -1; | |
3636 | ||
3637 | megaraid_mbox_mm_done(adapter, scb); | |
3638 | ||
3639 | return (-EBUSY); | |
3640 | } | |
3641 | ||
3642 | return 0; | |
3643 | } | |
3644 | ||
3645 | // put the command on the pending list and execute | |
3646 | megaraid_mbox_runpendq(adapter, scb); | |
3647 | ||
3648 | return 0; | |
3649 | } | |
3650 | ||
3651 | ||
3652 | static int | |
3653 | wait_till_fw_empty(adapter_t *adapter) | |
3654 | { | |
3655 | unsigned long flags = 0; | |
3656 | int i; | |
3657 | ||
3658 | ||
3659 | /* | |
3660 | * Set the quiescent flag to stop issuing cmds to FW. | |
3661 | */ | |
f2c8dc40 | 3662 | spin_lock_irqsave(&adapter->lock, flags); |
1da177e4 | 3663 | adapter->quiescent++; |
f2c8dc40 | 3664 | spin_unlock_irqrestore(&adapter->lock, flags); |
1da177e4 LT |
3665 | |
3666 | /* | |
3667 | * Wait till there are no more cmds outstanding at FW. Try for at most | |
3668 | * 60 seconds | |
3669 | */ | |
3670 | for (i = 0; i < 60 && adapter->outstanding_cmds; i++) { | |
3671 | con_log(CL_DLEVEL1, (KERN_INFO | |
3672 | "megaraid: FW has %d pending commands\n", | |
3673 | adapter->outstanding_cmds)); | |
3674 | ||
3675 | msleep(1000); | |
3676 | } | |
3677 | ||
3678 | return adapter->outstanding_cmds; | |
3679 | } | |
3680 | ||
3681 | ||
3682 | /** | |
3683 | * megaraid_mbox_mm_done - callback for CMM commands | |
3684 | * @adapter : HBA soft state | |
3685 | * @scb : completed command | |
3686 | * | |
3687 | * Callback routine for internal commands originated from the management | |
3688 | * module. | |
3689 | */ | |
3690 | static void | |
3691 | megaraid_mbox_mm_done(adapter_t *adapter, scb_t *scb) | |
3692 | { | |
3693 | uioc_t *kioc; | |
3694 | mbox64_t *mbox64; | |
3695 | uint8_t *raw_mbox; | |
3696 | unsigned long flags; | |
3697 | ||
3698 | kioc = (uioc_t *)scb->gp; | |
1da177e4 LT |
3699 | mbox64 = (mbox64_t *)(unsigned long)kioc->cmdbuf; |
3700 | mbox64->mbox32.status = scb->status; | |
3701 | raw_mbox = (uint8_t *)&mbox64->mbox32; | |
3702 | ||
3703 | ||
3704 | // put scb in the free pool | |
3705 | scb->state = SCB_FREE; | |
3706 | scb->scp = NULL; | |
3707 | ||
3708 | spin_lock_irqsave(USER_FREE_LIST_LOCK(adapter), flags); | |
3709 | ||
3710 | list_add(&scb->list, &adapter->uscb_pool); | |
3711 | ||
3712 | spin_unlock_irqrestore(USER_FREE_LIST_LOCK(adapter), flags); | |
3713 | ||
3714 | // if a delete logical drive operation succeeded, restart the | |
3715 | // controller | |
3716 | if (raw_mbox[0] == FC_DEL_LOGDRV && raw_mbox[2] == OP_DEL_LOGDRV) { | |
3717 | ||
3718 | adapter->quiescent--; | |
3719 | ||
3720 | megaraid_mbox_runpendq(adapter, NULL); | |
3721 | } | |
3722 | ||
3723 | kioc->done(kioc); | |
3724 | ||
3725 | return; | |
3726 | } | |
3727 | ||
3728 | ||
3729 | /** | |
3730 | * gather_hbainfo - HBA characteristics for the applications | |
a69b74d3 RD |
3731 | * @adapter : HBA soft state |
3732 | * @hinfo : pointer to the caller's host info strucuture | |
1da177e4 LT |
3733 | */ |
3734 | static int | |
3735 | gather_hbainfo(adapter_t *adapter, mraid_hba_info_t *hinfo) | |
3736 | { | |
1da177e4 LT |
3737 | hinfo->pci_vendor_id = adapter->pdev->vendor; |
3738 | hinfo->pci_device_id = adapter->pdev->device; | |
3739 | hinfo->subsys_vendor_id = adapter->pdev->subsystem_vendor; | |
3740 | hinfo->subsys_device_id = adapter->pdev->subsystem_device; | |
3741 | ||
3742 | hinfo->pci_bus = adapter->pdev->bus->number; | |
3743 | hinfo->pci_dev_fn = adapter->pdev->devfn; | |
3744 | hinfo->pci_slot = PCI_SLOT(adapter->pdev->devfn); | |
3745 | hinfo->irq = adapter->host->irq; | |
3746 | hinfo->baseport = ADAP2RAIDDEV(adapter)->baseport; | |
3747 | ||
3748 | hinfo->unique_id = (hinfo->pci_bus << 8) | adapter->pdev->devfn; | |
3749 | hinfo->host_no = adapter->host->host_no; | |
3750 | ||
3751 | return 0; | |
3752 | } | |
3753 | ||
3754 | /* | |
3755 | * END: Interface for the common management module | |
3756 | */ | |
3757 | ||
3758 | ||
3759 | ||
3760 | /** | |
3761 | * megaraid_sysfs_alloc_resources - allocate sysfs related resources | |
a69b74d3 | 3762 | * @adapter : controller's soft state |
1da177e4 LT |
3763 | * |
3764 | * Allocate packets required to issue FW calls whenever the sysfs attributes | |
3765 | * are read. These attributes would require up-to-date information from the | |
3766 | * FW. Also set up resources for mutual exclusion to share these resources and | |
3767 | * the wait queue. | |
3768 | * | |
a69b74d3 RD |
3769 | * Return 0 on success. |
3770 | * Return -ERROR_CODE on failure. | |
1da177e4 LT |
3771 | */ |
3772 | static int | |
3773 | megaraid_sysfs_alloc_resources(adapter_t *adapter) | |
3774 | { | |
3775 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3776 | int rval = 0; | |
3777 | ||
3778 | raid_dev->sysfs_uioc = kmalloc(sizeof(uioc_t), GFP_KERNEL); | |
3779 | ||
3780 | raid_dev->sysfs_mbox64 = kmalloc(sizeof(mbox64_t), GFP_KERNEL); | |
3781 | ||
66e3a241 CH |
3782 | raid_dev->sysfs_buffer = dma_alloc_coherent(&adapter->pdev->dev, |
3783 | PAGE_SIZE, &raid_dev->sysfs_buffer_dma, GFP_KERNEL); | |
1da177e4 LT |
3784 | |
3785 | if (!raid_dev->sysfs_uioc || !raid_dev->sysfs_mbox64 || | |
3786 | !raid_dev->sysfs_buffer) { | |
3787 | ||
3788 | con_log(CL_ANN, (KERN_WARNING | |
cadbd4a5 | 3789 | "megaraid: out of memory, %s %d\n", __func__, |
1da177e4 LT |
3790 | __LINE__)); |
3791 | ||
3792 | rval = -ENOMEM; | |
3793 | ||
3794 | megaraid_sysfs_free_resources(adapter); | |
3795 | } | |
3796 | ||
0c2cc433 | 3797 | mutex_init(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3798 | |
3799 | init_waitqueue_head(&raid_dev->sysfs_wait_q); | |
3800 | ||
3801 | return rval; | |
3802 | } | |
3803 | ||
3804 | ||
3805 | /** | |
3806 | * megaraid_sysfs_free_resources - free sysfs related resources | |
a69b74d3 | 3807 | * @adapter : controller's soft state |
1da177e4 LT |
3808 | * |
3809 | * Free packets allocated for sysfs FW commands | |
1da177e4 LT |
3810 | */ |
3811 | static void | |
3812 | megaraid_sysfs_free_resources(adapter_t *adapter) | |
3813 | { | |
3814 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3815 | ||
c9475cb0 JJ |
3816 | kfree(raid_dev->sysfs_uioc); |
3817 | kfree(raid_dev->sysfs_mbox64); | |
1da177e4 LT |
3818 | |
3819 | if (raid_dev->sysfs_buffer) { | |
66e3a241 | 3820 | dma_free_coherent(&adapter->pdev->dev, PAGE_SIZE, |
1da177e4 LT |
3821 | raid_dev->sysfs_buffer, raid_dev->sysfs_buffer_dma); |
3822 | } | |
3823 | } | |
3824 | ||
3825 | ||
3826 | /** | |
3827 | * megaraid_sysfs_get_ldmap_done - callback for get ldmap | |
a69b74d3 | 3828 | * @uioc : completed packet |
1da177e4 LT |
3829 | * |
3830 | * Callback routine called in the ISR/tasklet context for get ldmap call | |
1da177e4 LT |
3831 | */ |
3832 | static void | |
3833 | megaraid_sysfs_get_ldmap_done(uioc_t *uioc) | |
3834 | { | |
3835 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; | |
3836 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3837 | ||
3838 | uioc->status = 0; | |
3839 | ||
3840 | wake_up(&raid_dev->sysfs_wait_q); | |
3841 | } | |
3842 | ||
1da177e4 LT |
3843 | /** |
3844 | * megaraid_sysfs_get_ldmap_timeout - timeout handling for get ldmap | |
c251a7be | 3845 | * @t : timed out timer |
1da177e4 LT |
3846 | * |
3847 | * Timeout routine to recover and return to application, in case the adapter | |
a69b74d3 RD |
3848 | * has stopped responding. A timeout of 60 seconds for this command seems like |
3849 | * a good value. | |
1da177e4 LT |
3850 | */ |
3851 | static void | |
c251a7be | 3852 | megaraid_sysfs_get_ldmap_timeout(struct timer_list *t) |
1da177e4 | 3853 | { |
c251a7be KC |
3854 | struct uioc_timeout *timeout = from_timer(timeout, t, timer); |
3855 | uioc_t *uioc = timeout->uioc; | |
1da177e4 LT |
3856 | adapter_t *adapter = (adapter_t *)uioc->buf_vaddr; |
3857 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3858 | ||
3859 | uioc->status = -ETIME; | |
3860 | ||
3861 | wake_up(&raid_dev->sysfs_wait_q); | |
3862 | } | |
3863 | ||
3864 | ||
3865 | /** | |
3866 | * megaraid_sysfs_get_ldmap - get update logical drive map | |
a69b74d3 | 3867 | * @adapter : controller's soft state |
1da177e4 LT |
3868 | * |
3869 | * This routine will be called whenever user reads the logical drive | |
3870 | * attributes, go get the current logical drive mapping table from the | |
b1c11812 | 3871 | * firmware. We use the management API's to issue commands to the controller. |
1da177e4 LT |
3872 | * |
3873 | * NOTE: The commands issuance functionality is not generalized and | |
3874 | * implemented in context of "get ld map" command only. If required, the | |
3875 | * command issuance logical can be trivially pulled out and implemented as a | |
25985edc | 3876 | * standalone library. For now, this should suffice since there is no other |
1da177e4 LT |
3877 | * user of this interface. |
3878 | * | |
a69b74d3 RD |
3879 | * Return 0 on success. |
3880 | * Return -1 on failure. | |
1da177e4 LT |
3881 | */ |
3882 | static int | |
3883 | megaraid_sysfs_get_ldmap(adapter_t *adapter) | |
3884 | { | |
3885 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
3886 | uioc_t *uioc; | |
3887 | mbox64_t *mbox64; | |
3888 | mbox_t *mbox; | |
3889 | char *raw_mbox; | |
c251a7be | 3890 | struct uioc_timeout timeout; |
1da177e4 LT |
3891 | caddr_t ldmap; |
3892 | int rval = 0; | |
3893 | ||
3894 | /* | |
3895 | * Allow only one read at a time to go through the sysfs attributes | |
3896 | */ | |
0c2cc433 | 3897 | mutex_lock(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3898 | |
3899 | uioc = raid_dev->sysfs_uioc; | |
3900 | mbox64 = raid_dev->sysfs_mbox64; | |
3901 | ldmap = raid_dev->sysfs_buffer; | |
3902 | ||
3903 | memset(uioc, 0, sizeof(uioc_t)); | |
3904 | memset(mbox64, 0, sizeof(mbox64_t)); | |
3905 | memset(ldmap, 0, sizeof(raid_dev->curr_ldmap)); | |
3906 | ||
3907 | mbox = &mbox64->mbox32; | |
3908 | raw_mbox = (char *)mbox; | |
3909 | uioc->cmdbuf = (uint64_t)(unsigned long)mbox64; | |
3910 | uioc->buf_vaddr = (caddr_t)adapter; | |
3911 | uioc->status = -ENODATA; | |
3912 | uioc->done = megaraid_sysfs_get_ldmap_done; | |
3913 | ||
3914 | /* | |
3915 | * Prepare the mailbox packet to get the current logical drive mapping | |
3916 | * table | |
3917 | */ | |
3918 | mbox->xferaddr = (uint32_t)raid_dev->sysfs_buffer_dma; | |
3919 | ||
3920 | raw_mbox[0] = FC_DEL_LOGDRV; | |
3921 | raw_mbox[2] = OP_GET_LDID_MAP; | |
3922 | ||
3923 | /* | |
3924 | * Setup a timer to recover from a non-responding controller | |
3925 | */ | |
c251a7be KC |
3926 | timeout.uioc = uioc; |
3927 | timer_setup_on_stack(&timeout.timer, | |
3928 | megaraid_sysfs_get_ldmap_timeout, 0); | |
1da177e4 | 3929 | |
c251a7be KC |
3930 | timeout.timer.expires = jiffies + 60 * HZ; |
3931 | add_timer(&timeout.timer); | |
1da177e4 LT |
3932 | |
3933 | /* | |
3934 | * Send the command to the firmware | |
3935 | */ | |
3936 | rval = megaraid_mbox_mm_command(adapter, uioc); | |
3937 | ||
3938 | if (rval == 0) { // command successfully issued | |
3939 | wait_event(raid_dev->sysfs_wait_q, (uioc->status != -ENODATA)); | |
3940 | ||
3941 | /* | |
3942 | * Check if the command timed out | |
3943 | */ | |
3944 | if (uioc->status == -ETIME) { | |
3945 | con_log(CL_ANN, (KERN_NOTICE | |
3946 | "megaraid: sysfs get ld map timed out\n")); | |
3947 | ||
3948 | rval = -ETIME; | |
3949 | } | |
3950 | else { | |
3951 | rval = mbox->status; | |
3952 | } | |
3953 | ||
3954 | if (rval == 0) { | |
3955 | memcpy(raid_dev->curr_ldmap, ldmap, | |
3956 | sizeof(raid_dev->curr_ldmap)); | |
3957 | } | |
3958 | else { | |
3959 | con_log(CL_ANN, (KERN_NOTICE | |
3960 | "megaraid: get ld map failed with %x\n", rval)); | |
3961 | } | |
3962 | } | |
3963 | else { | |
3964 | con_log(CL_ANN, (KERN_NOTICE | |
3965 | "megaraid: could not issue ldmap command:%x\n", rval)); | |
3966 | } | |
3967 | ||
3968 | ||
c251a7be KC |
3969 | del_timer_sync(&timeout.timer); |
3970 | destroy_timer_on_stack(&timeout.timer); | |
1da177e4 | 3971 | |
0c2cc433 | 3972 | mutex_unlock(&raid_dev->sysfs_mtx); |
1da177e4 LT |
3973 | |
3974 | return rval; | |
3975 | } | |
3976 | ||
3977 | ||
3978 | /** | |
3979 | * megaraid_sysfs_show_app_hndl - display application handle for this adapter | |
a69b74d3 RD |
3980 | * @cdev : class device object representation for the host |
3981 | * @buf : buffer to send data to | |
1da177e4 LT |
3982 | * |
3983 | * Display the handle used by the applications while executing management | |
3984 | * tasks on the adapter. We invoke a management module API to get the adapter | |
3985 | * handle, since we do not interface with applications directly. | |
1da177e4 LT |
3986 | */ |
3987 | static ssize_t | |
ee959b00 TJ |
3988 | megaraid_sysfs_show_app_hndl(struct device *dev, struct device_attribute *attr, |
3989 | char *buf) | |
1da177e4 | 3990 | { |
ee959b00 | 3991 | struct Scsi_Host *shost = class_to_shost(dev); |
1da177e4 LT |
3992 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(shost); |
3993 | uint32_t app_hndl; | |
3994 | ||
3995 | app_hndl = mraid_mm_adapter_app_handle(adapter->unique_id); | |
3996 | ||
3997 | return snprintf(buf, 8, "%u\n", app_hndl); | |
3998 | } | |
3999 | ||
4000 | ||
4001 | /** | |
4002 | * megaraid_sysfs_show_ldnum - display the logical drive number for this device | |
a69b74d3 RD |
4003 | * @dev : device object representation for the scsi device |
4004 | * @attr : device attribute to show | |
4005 | * @buf : buffer to send data to | |
1da177e4 LT |
4006 | * |
4007 | * Display the logical drive number for the device in question, if it a valid | |
a69b74d3 RD |
4008 | * logical drive. For physical devices, "-1" is returned. |
4009 | * | |
4010 | * The logical drive number is displayed in following format: | |
1da177e4 LT |
4011 | * |
4012 | * <SCSI ID> <LD NUM> <LD STICKY ID> <APP ADAPTER HANDLE> | |
1da177e4 | 4013 | * |
a69b74d3 | 4014 | * <int> <int> <int> <int> |
1da177e4 LT |
4015 | */ |
4016 | static ssize_t | |
10523b3b | 4017 | megaraid_sysfs_show_ldnum(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4018 | { |
4019 | struct scsi_device *sdev = to_scsi_device(dev); | |
4020 | adapter_t *adapter = (adapter_t *)SCSIHOST2ADAP(sdev->host); | |
4021 | mraid_device_t *raid_dev = ADAP2RAIDDEV(adapter); | |
4022 | int scsi_id = -1; | |
4023 | int logical_drv = -1; | |
4024 | int ldid_map = -1; | |
4025 | uint32_t app_hndl = 0; | |
4026 | int mapped_sdev_id; | |
4027 | int rval; | |
4028 | int i; | |
4029 | ||
4030 | if (raid_dev->random_del_supported && | |
4031 | MRAID_IS_LOGICAL_SDEV(adapter, sdev)) { | |
4032 | ||
4033 | rval = megaraid_sysfs_get_ldmap(adapter); | |
4034 | if (rval == 0) { | |
4035 | ||
4036 | for (i = 0; i < MAX_LOGICAL_DRIVES_40LD; i++) { | |
4037 | ||
4038 | mapped_sdev_id = sdev->id; | |
4039 | ||
4040 | if (sdev->id > adapter->init_id) { | |
4041 | mapped_sdev_id -= 1; | |
4042 | } | |
4043 | ||
4044 | if (raid_dev->curr_ldmap[i] == mapped_sdev_id) { | |
4045 | ||
4046 | scsi_id = sdev->id; | |
4047 | ||
4048 | logical_drv = i; | |
4049 | ||
4050 | ldid_map = raid_dev->curr_ldmap[i]; | |
4051 | ||
4052 | app_hndl = mraid_mm_adapter_app_handle( | |
4053 | adapter->unique_id); | |
4054 | ||
4055 | break; | |
4056 | } | |
4057 | } | |
4058 | } | |
4059 | else { | |
4060 | con_log(CL_ANN, (KERN_NOTICE | |
4061 | "megaraid: sysfs get ld map failed: %x\n", | |
4062 | rval)); | |
4063 | } | |
4064 | } | |
4065 | ||
4066 | return snprintf(buf, 36, "%d %d %d %d\n", scsi_id, logical_drv, | |
4067 | ldid_map, app_hndl); | |
4068 | } | |
4069 | ||
4070 | ||
4071 | /* | |
4072 | * END: Mailbox Low Level Driver | |
4073 | */ | |
4074 | module_init(megaraid_init); | |
4075 | module_exit(megaraid_exit); | |
4076 | ||
4077 | /* vim: set ts=8 sw=8 tw=78 ai si: */ |