Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Adaptec AAC series RAID controller driver | |
fa195afe | 3 | * (c) Copyright 2001 Red Hat Inc. |
1da177e4 LT |
4 | * |
5 | * based on the old aacraid driver that is.. | |
6 | * Adaptec aacraid device driver for Linux. | |
7 | * | |
e8b12f0f MR |
8 | * Copyright (c) 2000-2010 Adaptec, Inc. |
9 | * 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) | |
1da177e4 LT |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2, or (at your option) | |
14 | * any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; see the file COPYING. If not, write to | |
23 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | * | |
25 | * Module Name: | |
26 | * commsup.c | |
27 | * | |
28 | * Abstract: Contain all routines that are required for FSA host/adapter | |
7c00ffa3 | 29 | * communication. |
1da177e4 LT |
30 | * |
31 | */ | |
32 | ||
33 | #include <linux/kernel.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/types.h> | |
36 | #include <linux/sched.h> | |
37 | #include <linux/pci.h> | |
38 | #include <linux/spinlock.h> | |
39 | #include <linux/slab.h> | |
40 | #include <linux/completion.h> | |
41 | #include <linux/blkdev.h> | |
164006da | 42 | #include <linux/delay.h> |
fe27381d | 43 | #include <linux/kthread.h> |
6a3670c4 | 44 | #include <linux/interrupt.h> |
6188e10d | 45 | #include <linux/semaphore.h> |
8c867b25 | 46 | #include <scsi/scsi.h> |
7c00ffa3 | 47 | #include <scsi/scsi_host.h> |
131256cf | 48 | #include <scsi/scsi_device.h> |
8c867b25 | 49 | #include <scsi/scsi_cmnd.h> |
1da177e4 LT |
50 | |
51 | #include "aacraid.h" | |
52 | ||
53 | /** | |
54 | * fib_map_alloc - allocate the fib objects | |
55 | * @dev: Adapter to allocate for | |
56 | * | |
57 | * Allocate and map the shared PCI space for the FIB blocks used to | |
58 | * talk to the Adaptec firmware. | |
59 | */ | |
8ce3eca4 | 60 | |
1da177e4 LT |
61 | static int fib_map_alloc(struct aac_dev *dev) |
62 | { | |
7c00ffa3 MH |
63 | dprintk((KERN_INFO |
64 | "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n", | |
65 | dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue, | |
66 | AAC_NUM_MGT_FIB, &dev->hw_fib_pa)); | |
e8b12f0f MR |
67 | dev->hw_fib_va = pci_alloc_consistent(dev->pdev, |
68 | (dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) | |
69 | * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1), | |
70 | &dev->hw_fib_pa); | |
71 | if (dev->hw_fib_va == NULL) | |
1da177e4 LT |
72 | return -ENOMEM; |
73 | return 0; | |
74 | } | |
75 | ||
76 | /** | |
bfb35aa8 | 77 | * aac_fib_map_free - free the fib objects |
1da177e4 LT |
78 | * @dev: Adapter to free |
79 | * | |
80 | * Free the PCI mappings and the memory allocated for FIB blocks | |
81 | * on this adapter. | |
82 | */ | |
83 | ||
bfb35aa8 | 84 | void aac_fib_map_free(struct aac_dev *dev) |
1da177e4 | 85 | { |
9ad5204d SM |
86 | pci_free_consistent(dev->pdev, |
87 | dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB), | |
88 | dev->hw_fib_va, dev->hw_fib_pa); | |
89 | dev->hw_fib_va = NULL; | |
90 | dev->hw_fib_pa = 0; | |
1da177e4 LT |
91 | } |
92 | ||
93 | /** | |
bfb35aa8 | 94 | * aac_fib_setup - setup the fibs |
1da177e4 LT |
95 | * @dev: Adapter to set up |
96 | * | |
b595076a | 97 | * Allocate the PCI space for the fibs, map it and then initialise the |
1da177e4 LT |
98 | * fib area, the unmapped fib data and also the free list |
99 | */ | |
100 | ||
bfb35aa8 | 101 | int aac_fib_setup(struct aac_dev * dev) |
1da177e4 LT |
102 | { |
103 | struct fib *fibptr; | |
a8166a52 | 104 | struct hw_fib *hw_fib; |
1da177e4 LT |
105 | dma_addr_t hw_fib_pa; |
106 | int i; | |
7c00ffa3 MH |
107 | |
108 | while (((i = fib_map_alloc(dev)) == -ENOMEM) | |
109 | && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) { | |
110 | dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1); | |
111 | dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB; | |
112 | } | |
113 | if (i<0) | |
1da177e4 | 114 | return -ENOMEM; |
8ce3eca4 | 115 | |
e8b12f0f MR |
116 | /* 32 byte alignment for PMC */ |
117 | hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1); | |
118 | dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + | |
119 | (hw_fib_pa - dev->hw_fib_pa)); | |
120 | dev->hw_fib_pa = hw_fib_pa; | |
121 | memset(dev->hw_fib_va, 0, | |
122 | (dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) * | |
123 | (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)); | |
124 | ||
125 | /* add Xport header */ | |
126 | dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va + | |
127 | sizeof(struct aac_fib_xporthdr)); | |
128 | dev->hw_fib_pa += sizeof(struct aac_fib_xporthdr); | |
129 | ||
a8166a52 | 130 | hw_fib = dev->hw_fib_va; |
1da177e4 | 131 | hw_fib_pa = dev->hw_fib_pa; |
1da177e4 LT |
132 | /* |
133 | * Initialise the fibs | |
134 | */ | |
8ce3eca4 SM |
135 | for (i = 0, fibptr = &dev->fibs[i]; |
136 | i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); | |
137 | i++, fibptr++) | |
1da177e4 LT |
138 | { |
139 | fibptr->dev = dev; | |
a8166a52 MH |
140 | fibptr->hw_fib_va = hw_fib; |
141 | fibptr->data = (void *) fibptr->hw_fib_va->data; | |
1da177e4 | 142 | fibptr->next = fibptr+1; /* Forward chain the fibs */ |
6de76cfc | 143 | sema_init(&fibptr->event_wait, 0); |
1da177e4 | 144 | spin_lock_init(&fibptr->event_lock); |
a8166a52 MH |
145 | hw_fib->header.XferState = cpu_to_le32(0xffffffff); |
146 | hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size); | |
1da177e4 | 147 | fibptr->hw_fib_pa = hw_fib_pa; |
e8b12f0f MR |
148 | hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + |
149 | dev->max_fib_size + sizeof(struct aac_fib_xporthdr)); | |
150 | hw_fib_pa = hw_fib_pa + | |
151 | dev->max_fib_size + sizeof(struct aac_fib_xporthdr); | |
1da177e4 LT |
152 | } |
153 | /* | |
154 | * Add the fib chain to the free list | |
155 | */ | |
7c00ffa3 | 156 | dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; |
1da177e4 LT |
157 | /* |
158 | * Enable this to debug out of queue space | |
159 | */ | |
160 | dev->free_fib = &dev->fibs[0]; | |
161 | return 0; | |
162 | } | |
163 | ||
164 | /** | |
bfb35aa8 | 165 | * aac_fib_alloc - allocate a fib |
1da177e4 LT |
166 | * @dev: Adapter to allocate the fib for |
167 | * | |
168 | * Allocate a fib from the adapter fib pool. If the pool is empty we | |
7c00ffa3 | 169 | * return NULL. |
1da177e4 | 170 | */ |
8ce3eca4 | 171 | |
bfb35aa8 | 172 | struct fib *aac_fib_alloc(struct aac_dev *dev) |
1da177e4 LT |
173 | { |
174 | struct fib * fibptr; | |
175 | unsigned long flags; | |
176 | spin_lock_irqsave(&dev->fib_lock, flags); | |
8ce3eca4 | 177 | fibptr = dev->free_fib; |
7c00ffa3 MH |
178 | if(!fibptr){ |
179 | spin_unlock_irqrestore(&dev->fib_lock, flags); | |
180 | return fibptr; | |
181 | } | |
1da177e4 LT |
182 | dev->free_fib = fibptr->next; |
183 | spin_unlock_irqrestore(&dev->fib_lock, flags); | |
184 | /* | |
185 | * Set the proper node type code and node byte size | |
186 | */ | |
187 | fibptr->type = FSAFS_NTC_FIB_CONTEXT; | |
188 | fibptr->size = sizeof(struct fib); | |
189 | /* | |
190 | * Null out fields that depend on being zero at the start of | |
191 | * each I/O | |
192 | */ | |
a8166a52 | 193 | fibptr->hw_fib_va->header.XferState = 0; |
b6ef70f3 | 194 | fibptr->flags = 0; |
1da177e4 LT |
195 | fibptr->callback = NULL; |
196 | fibptr->callback_data = NULL; | |
197 | ||
198 | return fibptr; | |
199 | } | |
200 | ||
201 | /** | |
bfb35aa8 | 202 | * aac_fib_free - free a fib |
1da177e4 LT |
203 | * @fibptr: fib to free up |
204 | * | |
205 | * Frees up a fib and places it on the appropriate queue | |
1da177e4 | 206 | */ |
8ce3eca4 | 207 | |
bfb35aa8 | 208 | void aac_fib_free(struct fib *fibptr) |
1da177e4 | 209 | { |
cacb6dc3 PNRCEH |
210 | unsigned long flags, flagsv; |
211 | ||
212 | spin_lock_irqsave(&fibptr->event_lock, flagsv); | |
213 | if (fibptr->done == 2) { | |
214 | spin_unlock_irqrestore(&fibptr->event_lock, flagsv); | |
215 | return; | |
216 | } | |
217 | spin_unlock_irqrestore(&fibptr->event_lock, flagsv); | |
1da177e4 LT |
218 | |
219 | spin_lock_irqsave(&fibptr->dev->fib_lock, flags); | |
03d44337 | 220 | if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) |
1da177e4 | 221 | aac_config.fib_timeouts++; |
03d44337 MH |
222 | if (fibptr->hw_fib_va->header.XferState != 0) { |
223 | printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n", | |
224 | (void*)fibptr, | |
225 | le32_to_cpu(fibptr->hw_fib_va->header.XferState)); | |
226 | } | |
227 | fibptr->next = fibptr->dev->free_fib; | |
228 | fibptr->dev->free_fib = fibptr; | |
1da177e4 LT |
229 | spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); |
230 | } | |
231 | ||
232 | /** | |
bfb35aa8 | 233 | * aac_fib_init - initialise a fib |
1da177e4 | 234 | * @fibptr: The fib to initialize |
8ce3eca4 | 235 | * |
1da177e4 LT |
236 | * Set up the generic fib fields ready for use |
237 | */ | |
8ce3eca4 | 238 | |
bfb35aa8 | 239 | void aac_fib_init(struct fib *fibptr) |
1da177e4 | 240 | { |
a8166a52 | 241 | struct hw_fib *hw_fib = fibptr->hw_fib_va; |
1da177e4 LT |
242 | |
243 | hw_fib->header.StructType = FIB_MAGIC; | |
7c00ffa3 MH |
244 | hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size); |
245 | hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable); | |
8e0c5ebd | 246 | hw_fib->header.SenderFibAddress = 0; /* Filled in later if needed */ |
1da177e4 | 247 | hw_fib->header.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa); |
7c00ffa3 | 248 | hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size); |
1da177e4 LT |
249 | } |
250 | ||
251 | /** | |
252 | * fib_deallocate - deallocate a fib | |
253 | * @fibptr: fib to deallocate | |
254 | * | |
255 | * Will deallocate and return to the free pool the FIB pointed to by the | |
256 | * caller. | |
257 | */ | |
8ce3eca4 | 258 | |
4833869e | 259 | static void fib_dealloc(struct fib * fibptr) |
1da177e4 | 260 | { |
a8166a52 | 261 | struct hw_fib *hw_fib = fibptr->hw_fib_va; |
125e1874 | 262 | BUG_ON(hw_fib->header.StructType != FIB_MAGIC); |
8ce3eca4 | 263 | hw_fib->header.XferState = 0; |
1da177e4 LT |
264 | } |
265 | ||
266 | /* | |
267 | * Commuication primitives define and support the queuing method we use to | |
268 | * support host to adapter commuication. All queue accesses happen through | |
269 | * these routines and are the only routines which have a knowledge of the | |
270 | * how these queues are implemented. | |
271 | */ | |
8ce3eca4 | 272 | |
1da177e4 LT |
273 | /** |
274 | * aac_get_entry - get a queue entry | |
275 | * @dev: Adapter | |
276 | * @qid: Queue Number | |
277 | * @entry: Entry return | |
278 | * @index: Index return | |
279 | * @nonotify: notification control | |
280 | * | |
281 | * With a priority the routine returns a queue entry if the queue has free entries. If the queue | |
282 | * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is | |
283 | * returned. | |
284 | */ | |
8ce3eca4 | 285 | |
1da177e4 LT |
286 | static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify) |
287 | { | |
288 | struct aac_queue * q; | |
bed30de4 | 289 | unsigned long idx; |
1da177e4 LT |
290 | |
291 | /* | |
292 | * All of the queues wrap when they reach the end, so we check | |
293 | * to see if they have reached the end and if they have we just | |
294 | * set the index back to zero. This is a wrap. You could or off | |
295 | * the high bits in all updates but this is a bit faster I think. | |
296 | */ | |
297 | ||
298 | q = &dev->queues->queue[qid]; | |
bed30de4 MH |
299 | |
300 | idx = *index = le32_to_cpu(*(q->headers.producer)); | |
301 | /* Interrupt Moderation, only interrupt for first two entries */ | |
302 | if (idx != le32_to_cpu(*(q->headers.consumer))) { | |
303 | if (--idx == 0) { | |
1640a2c3 | 304 | if (qid == AdapNormCmdQueue) |
bed30de4 | 305 | idx = ADAP_NORM_CMD_ENTRIES; |
1640a2c3 | 306 | else |
bed30de4 MH |
307 | idx = ADAP_NORM_RESP_ENTRIES; |
308 | } | |
309 | if (idx != le32_to_cpu(*(q->headers.consumer))) | |
8ce3eca4 | 310 | *nonotify = 1; |
bed30de4 | 311 | } |
1da177e4 | 312 | |
1640a2c3 | 313 | if (qid == AdapNormCmdQueue) { |
8ce3eca4 | 314 | if (*index >= ADAP_NORM_CMD_ENTRIES) |
1da177e4 | 315 | *index = 0; /* Wrap to front of the Producer Queue. */ |
1640a2c3 | 316 | } else { |
8ce3eca4 | 317 | if (*index >= ADAP_NORM_RESP_ENTRIES) |
1da177e4 LT |
318 | *index = 0; /* Wrap to front of the Producer Queue. */ |
319 | } | |
1da177e4 | 320 | |
8ce3eca4 SM |
321 | /* Queue is full */ |
322 | if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { | |
7c00ffa3 | 323 | printk(KERN_WARNING "Queue %d full, %u outstanding.\n", |
1da177e4 LT |
324 | qid, q->numpending); |
325 | return 0; | |
326 | } else { | |
8ce3eca4 | 327 | *entry = q->base + *index; |
1da177e4 LT |
328 | return 1; |
329 | } | |
8ce3eca4 | 330 | } |
1da177e4 LT |
331 | |
332 | /** | |
333 | * aac_queue_get - get the next free QE | |
334 | * @dev: Adapter | |
335 | * @index: Returned index | |
336 | * @priority: Priority of fib | |
337 | * @fib: Fib to associate with the queue entry | |
338 | * @wait: Wait if queue full | |
339 | * @fibptr: Driver fib object to go with fib | |
340 | * @nonotify: Don't notify the adapter | |
341 | * | |
342 | * Gets the next free QE off the requested priorty adapter command | |
343 | * queue and associates the Fib with the QE. The QE represented by | |
344 | * index is ready to insert on the queue when this routine returns | |
345 | * success. | |
346 | */ | |
347 | ||
28713324 | 348 | int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw_fib, int wait, struct fib * fibptr, unsigned long *nonotify) |
1da177e4 LT |
349 | { |
350 | struct aac_entry * entry = NULL; | |
351 | int map = 0; | |
8ce3eca4 | 352 | |
1640a2c3 | 353 | if (qid == AdapNormCmdQueue) { |
1da177e4 | 354 | /* if no entries wait for some if caller wants to */ |
8ce3eca4 | 355 | while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { |
1da177e4 LT |
356 | printk(KERN_ERR "GetEntries failed\n"); |
357 | } | |
8ce3eca4 SM |
358 | /* |
359 | * Setup queue entry with a command, status and fib mapped | |
360 | */ | |
361 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); | |
362 | map = 1; | |
1640a2c3 | 363 | } else { |
8ce3eca4 | 364 | while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { |
1da177e4 LT |
365 | /* if no entries wait for some if caller wants to */ |
366 | } | |
8ce3eca4 SM |
367 | /* |
368 | * Setup queue entry with command, status and fib mapped | |
369 | */ | |
370 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); | |
371 | entry->addr = hw_fib->header.SenderFibAddress; | |
372 | /* Restore adapters pointer to the FIB */ | |
1da177e4 | 373 | hw_fib->header.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */ |
8ce3eca4 | 374 | map = 0; |
1da177e4 LT |
375 | } |
376 | /* | |
377 | * If MapFib is true than we need to map the Fib and put pointers | |
378 | * in the queue entry. | |
379 | */ | |
380 | if (map) | |
381 | entry->addr = cpu_to_le32(fibptr->hw_fib_pa); | |
382 | return 0; | |
383 | } | |
384 | ||
1da177e4 | 385 | /* |
8ce3eca4 SM |
386 | * Define the highest level of host to adapter communication routines. |
387 | * These routines will support host to adapter FS commuication. These | |
1da177e4 LT |
388 | * routines have no knowledge of the commuication method used. This level |
389 | * sends and receives FIBs. This level has no knowledge of how these FIBs | |
390 | * get passed back and forth. | |
391 | */ | |
392 | ||
393 | /** | |
bfb35aa8 | 394 | * aac_fib_send - send a fib to the adapter |
1da177e4 LT |
395 | * @command: Command to send |
396 | * @fibptr: The fib | |
397 | * @size: Size of fib data area | |
398 | * @priority: Priority of Fib | |
399 | * @wait: Async/sync select | |
400 | * @reply: True if a reply is wanted | |
401 | * @callback: Called with reply | |
402 | * @callback_data: Passed to callback | |
403 | * | |
404 | * Sends the requested FIB to the adapter and optionally will wait for a | |
405 | * response FIB. If the caller does not wish to wait for a response than | |
406 | * an event to wait on must be supplied. This event will be set when a | |
407 | * response FIB is received from the adapter. | |
408 | */ | |
8ce3eca4 | 409 | |
bfb35aa8 MH |
410 | int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, |
411 | int priority, int wait, int reply, fib_callback callback, | |
412 | void *callback_data) | |
1da177e4 | 413 | { |
1da177e4 | 414 | struct aac_dev * dev = fibptr->dev; |
a8166a52 | 415 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
1da177e4 | 416 | unsigned long flags = 0; |
1640a2c3 | 417 | unsigned long qflags; |
cacb6dc3 | 418 | unsigned long mflags = 0; |
11604612 | 419 | unsigned long sflags = 0; |
cacb6dc3 | 420 | |
1640a2c3 | 421 | |
1da177e4 LT |
422 | if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) |
423 | return -EBUSY; | |
424 | /* | |
25985edc | 425 | * There are 5 cases with the wait and response requested flags. |
1da177e4 LT |
426 | * The only invalid cases are if the caller requests to wait and |
427 | * does not request a response and if the caller does not want a | |
428 | * response and the Fib is not allocated from pool. If a response | |
429 | * is not requesed the Fib will just be deallocaed by the DPC | |
430 | * routine when the response comes back from the adapter. No | |
8ce3eca4 | 431 | * further processing will be done besides deleting the Fib. We |
1da177e4 LT |
432 | * will have a debug mode where the adapter can notify the host |
433 | * it had a problem and the host can log that fact. | |
434 | */ | |
b6ef70f3 | 435 | fibptr->flags = 0; |
1da177e4 LT |
436 | if (wait && !reply) { |
437 | return -EINVAL; | |
438 | } else if (!wait && reply) { | |
439 | hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected); | |
440 | FIB_COUNTER_INCREMENT(aac_config.AsyncSent); | |
441 | } else if (!wait && !reply) { | |
442 | hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected); | |
443 | FIB_COUNTER_INCREMENT(aac_config.NoResponseSent); | |
444 | } else if (wait && reply) { | |
445 | hw_fib->header.XferState |= cpu_to_le32(ResponseExpected); | |
446 | FIB_COUNTER_INCREMENT(aac_config.NormalSent); | |
8ce3eca4 | 447 | } |
1da177e4 LT |
448 | /* |
449 | * Map the fib into 32bits by using the fib number | |
450 | */ | |
451 | ||
8e0c5ebd | 452 | hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2); |
1da177e4 LT |
453 | hw_fib->header.SenderData = (u32)(fibptr - dev->fibs); |
454 | /* | |
455 | * Set FIB state to indicate where it came from and if we want a | |
456 | * response from the adapter. Also load the command from the | |
457 | * caller. | |
458 | * | |
459 | * Map the hw fib pointer as a 32bit value | |
460 | */ | |
461 | hw_fib->header.Command = cpu_to_le16(command); | |
462 | hw_fib->header.XferState |= cpu_to_le32(SentFromHost); | |
a8166a52 | 463 | fibptr->hw_fib_va->header.Flags = 0; /* 0 the flags field - internal only*/ |
1da177e4 LT |
464 | /* |
465 | * Set the size of the Fib we want to send to the adapter | |
466 | */ | |
467 | hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); | |
468 | if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { | |
469 | return -EMSGSIZE; | |
8ce3eca4 | 470 | } |
1da177e4 LT |
471 | /* |
472 | * Get a queue entry connect the FIB to it and send an notify | |
473 | * the adapter a command is ready. | |
474 | */ | |
1640a2c3 | 475 | hw_fib->header.XferState |= cpu_to_le32(NormalPriority); |
1da177e4 | 476 | |
1da177e4 LT |
477 | /* |
478 | * Fill in the Callback and CallbackContext if we are not | |
479 | * going to wait. | |
480 | */ | |
481 | if (!wait) { | |
482 | fibptr->callback = callback; | |
483 | fibptr->callback_data = callback_data; | |
b6ef70f3 | 484 | fibptr->flags = FIB_CONTEXT_FLAG; |
1da177e4 | 485 | } |
1da177e4 LT |
486 | |
487 | fibptr->done = 0; | |
1da177e4 | 488 | |
1640a2c3 MH |
489 | FIB_COUNTER_INCREMENT(aac_config.FibsSent); |
490 | ||
1640a2c3 | 491 | dprintk((KERN_DEBUG "Fib contents:.\n")); |
8e0c5ebd MH |
492 | dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command))); |
493 | dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command))); | |
494 | dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState))); | |
a8166a52 | 495 | dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va)); |
1640a2c3 MH |
496 | dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa)); |
497 | dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr)); | |
498 | ||
c8f7b073 | 499 | if (!dev->queues) |
65101355 | 500 | return -EBUSY; |
1640a2c3 | 501 | |
cacb6dc3 PNRCEH |
502 | if (wait) { |
503 | ||
504 | spin_lock_irqsave(&dev->manage_lock, mflags); | |
505 | if (dev->management_fib_count >= AAC_NUM_MGT_FIB) { | |
506 | printk(KERN_INFO "No management Fibs Available:%d\n", | |
507 | dev->management_fib_count); | |
508 | spin_unlock_irqrestore(&dev->manage_lock, mflags); | |
509 | return -EBUSY; | |
510 | } | |
511 | dev->management_fib_count++; | |
512 | spin_unlock_irqrestore(&dev->manage_lock, mflags); | |
1640a2c3 | 513 | spin_lock_irqsave(&fibptr->event_lock, flags); |
cacb6dc3 PNRCEH |
514 | } |
515 | ||
11604612 MR |
516 | if (dev->sync_mode) { |
517 | if (wait) | |
518 | spin_unlock_irqrestore(&fibptr->event_lock, flags); | |
519 | spin_lock_irqsave(&dev->sync_lock, sflags); | |
520 | if (dev->sync_fib) { | |
521 | list_add_tail(&fibptr->fiblink, &dev->sync_fib_list); | |
522 | spin_unlock_irqrestore(&dev->sync_lock, sflags); | |
523 | } else { | |
524 | dev->sync_fib = fibptr; | |
525 | spin_unlock_irqrestore(&dev->sync_lock, sflags); | |
526 | aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB, | |
527 | (u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0, | |
528 | NULL, NULL, NULL, NULL, NULL); | |
529 | } | |
530 | if (wait) { | |
531 | fibptr->flags |= FIB_CONTEXT_FLAG_WAIT; | |
532 | if (down_interruptible(&fibptr->event_wait)) { | |
533 | fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT; | |
534 | return -EFAULT; | |
535 | } | |
536 | return 0; | |
537 | } | |
538 | return -EINPROGRESS; | |
539 | } | |
540 | ||
cacb6dc3 PNRCEH |
541 | if (aac_adapter_deliver(fibptr) != 0) { |
542 | printk(KERN_ERR "aac_fib_send: returned -EBUSY\n"); | |
543 | if (wait) { | |
544 | spin_unlock_irqrestore(&fibptr->event_lock, flags); | |
545 | spin_lock_irqsave(&dev->manage_lock, mflags); | |
546 | dev->management_fib_count--; | |
547 | spin_unlock_irqrestore(&dev->manage_lock, mflags); | |
548 | } | |
549 | return -EBUSY; | |
550 | } | |
551 | ||
8e0c5ebd | 552 | |
1da177e4 | 553 | /* |
8ce3eca4 | 554 | * If the caller wanted us to wait for response wait now. |
1da177e4 | 555 | */ |
8ce3eca4 | 556 | |
1da177e4 LT |
557 | if (wait) { |
558 | spin_unlock_irqrestore(&fibptr->event_lock, flags); | |
9203344c MH |
559 | /* Only set for first known interruptable command */ |
560 | if (wait < 0) { | |
561 | /* | |
562 | * *VERY* Dangerous to time out a command, the | |
563 | * assumption is made that we have no hope of | |
564 | * functioning because an interrupt routing or other | |
565 | * hardware failure has occurred. | |
566 | */ | |
30002f1c | 567 | unsigned long timeout = jiffies + (180 * HZ); /* 3 minutes */ |
9203344c | 568 | while (down_trylock(&fibptr->event_wait)) { |
33524b70 | 569 | int blink; |
30002f1c | 570 | if (time_is_before_eq_jiffies(timeout)) { |
28713324 | 571 | struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue]; |
9203344c MH |
572 | spin_lock_irqsave(q->lock, qflags); |
573 | q->numpending--; | |
9203344c MH |
574 | spin_unlock_irqrestore(q->lock, qflags); |
575 | if (wait == -1) { | |
bfb35aa8 | 576 | printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n" |
9203344c MH |
577 | "Usually a result of a PCI interrupt routing problem;\n" |
578 | "update mother board BIOS or consider utilizing one of\n" | |
579 | "the SAFE mode kernel options (acpi, apic etc)\n"); | |
580 | } | |
581 | return -ETIMEDOUT; | |
582 | } | |
33524b70 MH |
583 | if ((blink = aac_adapter_check_health(dev)) > 0) { |
584 | if (wait == -1) { | |
585 | printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n" | |
586 | "Usually a result of a serious unrecoverable hardware problem\n", | |
587 | blink); | |
588 | } | |
589 | return -EFAULT; | |
590 | } | |
30002f1c BC |
591 | /* We used to udelay() here but that absorbed |
592 | * a CPU when a timeout occured. Not very | |
593 | * useful. */ | |
594 | cpu_relax(); | |
9203344c | 595 | } |
0462590e | 596 | } else if (down_interruptible(&fibptr->event_wait)) { |
cacb6dc3 PNRCEH |
597 | /* Do nothing ... satisfy |
598 | * down_interruptible must_check */ | |
e6990c64 | 599 | } |
cacb6dc3 | 600 | |
33bb3b29 | 601 | spin_lock_irqsave(&fibptr->event_lock, flags); |
cacb6dc3 | 602 | if (fibptr->done == 0) { |
33bb3b29 | 603 | fibptr->done = 2; /* Tell interrupt we aborted */ |
c8f7b073 | 604 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
cacb6dc3 | 605 | return -ERESTARTSYS; |
c8f7b073 | 606 | } |
33bb3b29 | 607 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
125e1874 | 608 | BUG_ON(fibptr->done == 0); |
8ce3eca4 | 609 | |
912d4e88 | 610 | if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) |
1da177e4 | 611 | return -ETIMEDOUT; |
912d4e88 | 612 | return 0; |
1da177e4 LT |
613 | } |
614 | /* | |
615 | * If the user does not want a response than return success otherwise | |
616 | * return pending | |
617 | */ | |
618 | if (reply) | |
619 | return -EINPROGRESS; | |
620 | else | |
621 | return 0; | |
622 | } | |
623 | ||
8ce3eca4 | 624 | /** |
1da177e4 LT |
625 | * aac_consumer_get - get the top of the queue |
626 | * @dev: Adapter | |
627 | * @q: Queue | |
628 | * @entry: Return entry | |
629 | * | |
630 | * Will return a pointer to the entry on the top of the queue requested that | |
8ce3eca4 SM |
631 | * we are a consumer of, and return the address of the queue entry. It does |
632 | * not change the state of the queue. | |
1da177e4 LT |
633 | */ |
634 | ||
635 | int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry) | |
636 | { | |
637 | u32 index; | |
638 | int status; | |
639 | if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) { | |
640 | status = 0; | |
641 | } else { | |
642 | /* | |
643 | * The consumer index must be wrapped if we have reached | |
644 | * the end of the queue, else we just use the entry | |
645 | * pointed to by the header index | |
646 | */ | |
8ce3eca4 SM |
647 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
648 | index = 0; | |
1da177e4 | 649 | else |
8ce3eca4 | 650 | index = le32_to_cpu(*q->headers.consumer); |
1da177e4 LT |
651 | *entry = q->base + index; |
652 | status = 1; | |
653 | } | |
654 | return(status); | |
655 | } | |
656 | ||
657 | /** | |
658 | * aac_consumer_free - free consumer entry | |
659 | * @dev: Adapter | |
660 | * @q: Queue | |
661 | * @qid: Queue ident | |
662 | * | |
663 | * Frees up the current top of the queue we are a consumer of. If the | |
664 | * queue was full notify the producer that the queue is no longer full. | |
665 | */ | |
666 | ||
667 | void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid) | |
668 | { | |
669 | int wasfull = 0; | |
670 | u32 notify; | |
671 | ||
672 | if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer)) | |
673 | wasfull = 1; | |
8ce3eca4 | 674 | |
1da177e4 LT |
675 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
676 | *q->headers.consumer = cpu_to_le32(1); | |
677 | else | |
36b8dd1b | 678 | le32_add_cpu(q->headers.consumer, 1); |
8ce3eca4 | 679 | |
1da177e4 LT |
680 | if (wasfull) { |
681 | switch (qid) { | |
682 | ||
683 | case HostNormCmdQueue: | |
684 | notify = HostNormCmdNotFull; | |
685 | break; | |
1da177e4 LT |
686 | case HostNormRespQueue: |
687 | notify = HostNormRespNotFull; | |
688 | break; | |
1da177e4 LT |
689 | default: |
690 | BUG(); | |
691 | return; | |
692 | } | |
693 | aac_adapter_notify(dev, notify); | |
694 | } | |
8ce3eca4 | 695 | } |
1da177e4 LT |
696 | |
697 | /** | |
bfb35aa8 | 698 | * aac_fib_adapter_complete - complete adapter issued fib |
1da177e4 LT |
699 | * @fibptr: fib to complete |
700 | * @size: size of fib | |
701 | * | |
702 | * Will do all necessary work to complete a FIB that was sent from | |
703 | * the adapter. | |
704 | */ | |
705 | ||
bfb35aa8 | 706 | int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size) |
1da177e4 | 707 | { |
a8166a52 | 708 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
1da177e4 | 709 | struct aac_dev * dev = fibptr->dev; |
1640a2c3 | 710 | struct aac_queue * q; |
1da177e4 | 711 | unsigned long nointr = 0; |
1640a2c3 MH |
712 | unsigned long qflags; |
713 | ||
e8b12f0f MR |
714 | if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) { |
715 | kfree(hw_fib); | |
716 | return 0; | |
717 | } | |
718 | ||
1640a2c3 | 719 | if (hw_fib->header.XferState == 0) { |
28713324 | 720 | if (dev->comm_interface == AAC_COMM_MESSAGE) |
e8b12f0f | 721 | kfree(hw_fib); |
8ce3eca4 | 722 | return 0; |
1640a2c3 | 723 | } |
1da177e4 LT |
724 | /* |
725 | * If we plan to do anything check the structure type first. | |
8ce3eca4 SM |
726 | */ |
727 | if (hw_fib->header.StructType != FIB_MAGIC) { | |
28713324 | 728 | if (dev->comm_interface == AAC_COMM_MESSAGE) |
e8b12f0f | 729 | kfree(hw_fib); |
8ce3eca4 | 730 | return -EINVAL; |
1da177e4 LT |
731 | } |
732 | /* | |
733 | * This block handles the case where the adapter had sent us a | |
734 | * command and we have finished processing the command. We | |
8ce3eca4 SM |
735 | * call completeFib when we are done processing the command |
736 | * and want to send a response back to the adapter. This will | |
1da177e4 LT |
737 | * send the completed cdb to the adapter. |
738 | */ | |
739 | if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { | |
28713324 | 740 | if (dev->comm_interface == AAC_COMM_MESSAGE) { |
8e0c5ebd MH |
741 | kfree (hw_fib); |
742 | } else { | |
8ce3eca4 SM |
743 | u32 index; |
744 | hw_fib->header.XferState |= cpu_to_le32(HostProcessed); | |
8e0c5ebd MH |
745 | if (size) { |
746 | size += sizeof(struct aac_fibhdr); | |
8ce3eca4 | 747 | if (size > le16_to_cpu(hw_fib->header.SenderSize)) |
8e0c5ebd MH |
748 | return -EMSGSIZE; |
749 | hw_fib->header.Size = cpu_to_le16(size); | |
750 | } | |
751 | q = &dev->queues->queue[AdapNormRespQueue]; | |
752 | spin_lock_irqsave(q->lock, qflags); | |
753 | aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr); | |
754 | *(q->headers.producer) = cpu_to_le32(index + 1); | |
755 | spin_unlock_irqrestore(q->lock, qflags); | |
756 | if (!(nointr & (int)aac_config.irq_mod)) | |
757 | aac_adapter_notify(dev, AdapNormRespQueue); | |
1da177e4 | 758 | } |
8ce3eca4 SM |
759 | } else { |
760 | printk(KERN_WARNING "aac_fib_adapter_complete: " | |
761 | "Unknown xferstate detected.\n"); | |
762 | BUG(); | |
1da177e4 | 763 | } |
1da177e4 LT |
764 | return 0; |
765 | } | |
766 | ||
767 | /** | |
bfb35aa8 | 768 | * aac_fib_complete - fib completion handler |
1da177e4 LT |
769 | * @fib: FIB to complete |
770 | * | |
771 | * Will do all necessary work to complete a FIB. | |
772 | */ | |
8ce3eca4 | 773 | |
bfb35aa8 | 774 | int aac_fib_complete(struct fib *fibptr) |
1da177e4 | 775 | { |
cacb6dc3 | 776 | unsigned long flags; |
a8166a52 | 777 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
1da177e4 LT |
778 | |
779 | /* | |
780 | * Check for a fib which has already been completed | |
781 | */ | |
782 | ||
783 | if (hw_fib->header.XferState == 0) | |
8ce3eca4 | 784 | return 0; |
1da177e4 LT |
785 | /* |
786 | * If we plan to do anything check the structure type first. | |
8ce3eca4 | 787 | */ |
1da177e4 LT |
788 | |
789 | if (hw_fib->header.StructType != FIB_MAGIC) | |
8ce3eca4 | 790 | return -EINVAL; |
1da177e4 | 791 | /* |
8ce3eca4 | 792 | * This block completes a cdb which orginated on the host and we |
1da177e4 LT |
793 | * just need to deallocate the cdb or reinit it. At this point the |
794 | * command is complete that we had sent to the adapter and this | |
795 | * cdb could be reused. | |
796 | */ | |
cacb6dc3 PNRCEH |
797 | spin_lock_irqsave(&fibptr->event_lock, flags); |
798 | if (fibptr->done == 2) { | |
799 | spin_unlock_irqrestore(&fibptr->event_lock, flags); | |
800 | return 0; | |
801 | } | |
802 | spin_unlock_irqrestore(&fibptr->event_lock, flags); | |
803 | ||
1da177e4 LT |
804 | if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) && |
805 | (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))) | |
806 | { | |
807 | fib_dealloc(fibptr); | |
808 | } | |
809 | else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost)) | |
810 | { | |
811 | /* | |
812 | * This handles the case when the host has aborted the I/O | |
813 | * to the adapter because the adapter is not responding | |
814 | */ | |
815 | fib_dealloc(fibptr); | |
816 | } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) { | |
817 | fib_dealloc(fibptr); | |
818 | } else { | |
819 | BUG(); | |
8ce3eca4 | 820 | } |
1da177e4 LT |
821 | return 0; |
822 | } | |
823 | ||
824 | /** | |
825 | * aac_printf - handle printf from firmware | |
826 | * @dev: Adapter | |
827 | * @val: Message info | |
828 | * | |
829 | * Print a message passed to us by the controller firmware on the | |
830 | * Adaptec board | |
831 | */ | |
832 | ||
833 | void aac_printf(struct aac_dev *dev, u32 val) | |
834 | { | |
1da177e4 | 835 | char *cp = dev->printfbuf; |
7c00ffa3 MH |
836 | if (dev->printf_enabled) |
837 | { | |
838 | int length = val & 0xffff; | |
839 | int level = (val >> 16) & 0xffff; | |
8ce3eca4 | 840 | |
7c00ffa3 MH |
841 | /* |
842 | * The size of the printfbuf is set in port.c | |
843 | * There is no variable or define for it | |
844 | */ | |
845 | if (length > 255) | |
846 | length = 255; | |
847 | if (cp[length] != 0) | |
848 | cp[length] = 0; | |
849 | if (level == LOG_AAC_HIGH_ERROR) | |
1241f359 | 850 | printk(KERN_WARNING "%s:%s", dev->name, cp); |
7c00ffa3 | 851 | else |
1241f359 | 852 | printk(KERN_INFO "%s:%s", dev->name, cp); |
7c00ffa3 | 853 | } |
8ce3eca4 | 854 | memset(cp, 0, 256); |
1da177e4 LT |
855 | } |
856 | ||
131256cf MH |
857 | |
858 | /** | |
859 | * aac_handle_aif - Handle a message from the firmware | |
860 | * @dev: Which adapter this fib is from | |
861 | * @fibptr: Pointer to fibptr from adapter | |
862 | * | |
863 | * This routine handles a driver notify fib from the adapter and | |
864 | * dispatches it to the appropriate routine for handling. | |
865 | */ | |
866 | ||
31876f32 | 867 | #define AIF_SNIFF_TIMEOUT (30*HZ) |
131256cf MH |
868 | static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) |
869 | { | |
a8166a52 | 870 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
131256cf | 871 | struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data; |
0995ad38 | 872 | u32 channel, id, lun, container; |
131256cf MH |
873 | struct scsi_device *device; |
874 | enum { | |
875 | NOTHING, | |
876 | DELETE, | |
877 | ADD, | |
878 | CHANGE | |
0995ad38 | 879 | } device_config_needed = NOTHING; |
131256cf MH |
880 | |
881 | /* Sniff for container changes */ | |
882 | ||
c8f7b073 | 883 | if (!dev || !dev->fsa_dev) |
131256cf | 884 | return; |
0995ad38 | 885 | container = channel = id = lun = (u32)-1; |
131256cf MH |
886 | |
887 | /* | |
888 | * We have set this up to try and minimize the number of | |
889 | * re-configures that take place. As a result of this when | |
890 | * certain AIF's come in we will set a flag waiting for another | |
891 | * type of AIF before setting the re-config flag. | |
892 | */ | |
893 | switch (le32_to_cpu(aifcmd->command)) { | |
894 | case AifCmdDriverNotify: | |
f3307f72 | 895 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { |
131256cf MH |
896 | /* |
897 | * Morph or Expand complete | |
898 | */ | |
899 | case AifDenMorphComplete: | |
900 | case AifDenVolumeExtendComplete: | |
f3307f72 | 901 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
131256cf MH |
902 | if (container >= dev->maximum_num_containers) |
903 | break; | |
904 | ||
905 | /* | |
f64a181d | 906 | * Find the scsi_device associated with the SCSI |
131256cf MH |
907 | * address. Make sure we have the right array, and if |
908 | * so set the flag to initiate a new re-config once we | |
909 | * see an AifEnConfigChange AIF come through. | |
910 | */ | |
911 | ||
912 | if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) { | |
8ce3eca4 SM |
913 | device = scsi_device_lookup(dev->scsi_host_ptr, |
914 | CONTAINER_TO_CHANNEL(container), | |
915 | CONTAINER_TO_ID(container), | |
131256cf MH |
916 | CONTAINER_TO_LUN(container)); |
917 | if (device) { | |
918 | dev->fsa_dev[container].config_needed = CHANGE; | |
919 | dev->fsa_dev[container].config_waiting_on = AifEnConfigChange; | |
31876f32 | 920 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
131256cf MH |
921 | scsi_device_put(device); |
922 | } | |
923 | } | |
924 | } | |
925 | ||
926 | /* | |
927 | * If we are waiting on something and this happens to be | |
928 | * that thing then set the re-configure flag. | |
929 | */ | |
930 | if (container != (u32)-1) { | |
931 | if (container >= dev->maximum_num_containers) | |
932 | break; | |
31876f32 | 933 | if ((dev->fsa_dev[container].config_waiting_on == |
f3307f72 | 934 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
31876f32 | 935 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
131256cf MH |
936 | dev->fsa_dev[container].config_waiting_on = 0; |
937 | } else for (container = 0; | |
938 | container < dev->maximum_num_containers; ++container) { | |
31876f32 | 939 | if ((dev->fsa_dev[container].config_waiting_on == |
f3307f72 | 940 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
31876f32 | 941 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
131256cf MH |
942 | dev->fsa_dev[container].config_waiting_on = 0; |
943 | } | |
944 | break; | |
945 | ||
946 | case AifCmdEventNotify: | |
f3307f72 | 947 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { |
95e852e1 SM |
948 | case AifEnBatteryEvent: |
949 | dev->cache_protected = | |
950 | (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3)); | |
951 | break; | |
131256cf MH |
952 | /* |
953 | * Add an Array. | |
954 | */ | |
955 | case AifEnAddContainer: | |
f3307f72 | 956 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
131256cf MH |
957 | if (container >= dev->maximum_num_containers) |
958 | break; | |
959 | dev->fsa_dev[container].config_needed = ADD; | |
960 | dev->fsa_dev[container].config_waiting_on = | |
961 | AifEnConfigChange; | |
31876f32 | 962 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
131256cf MH |
963 | break; |
964 | ||
965 | /* | |
966 | * Delete an Array. | |
967 | */ | |
968 | case AifEnDeleteContainer: | |
f3307f72 | 969 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
131256cf MH |
970 | if (container >= dev->maximum_num_containers) |
971 | break; | |
972 | dev->fsa_dev[container].config_needed = DELETE; | |
973 | dev->fsa_dev[container].config_waiting_on = | |
974 | AifEnConfigChange; | |
31876f32 | 975 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
131256cf MH |
976 | break; |
977 | ||
978 | /* | |
979 | * Container change detected. If we currently are not | |
980 | * waiting on something else, setup to wait on a Config Change. | |
981 | */ | |
982 | case AifEnContainerChange: | |
f3307f72 | 983 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
131256cf MH |
984 | if (container >= dev->maximum_num_containers) |
985 | break; | |
31876f32 MH |
986 | if (dev->fsa_dev[container].config_waiting_on && |
987 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) | |
131256cf MH |
988 | break; |
989 | dev->fsa_dev[container].config_needed = CHANGE; | |
990 | dev->fsa_dev[container].config_waiting_on = | |
991 | AifEnConfigChange; | |
31876f32 | 992 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
131256cf MH |
993 | break; |
994 | ||
995 | case AifEnConfigChange: | |
996 | break; | |
997 | ||
cb1042f2 SM |
998 | case AifEnAddJBOD: |
999 | case AifEnDeleteJBOD: | |
1000 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); | |
a4576b5d MS |
1001 | if ((container >> 28)) { |
1002 | container = (u32)-1; | |
cb1042f2 | 1003 | break; |
a4576b5d | 1004 | } |
cb1042f2 | 1005 | channel = (container >> 24) & 0xF; |
a4576b5d MS |
1006 | if (channel >= dev->maximum_num_channels) { |
1007 | container = (u32)-1; | |
cb1042f2 | 1008 | break; |
a4576b5d | 1009 | } |
cb1042f2 | 1010 | id = container & 0xFFFF; |
a4576b5d MS |
1011 | if (id >= dev->maximum_num_physicals) { |
1012 | container = (u32)-1; | |
cb1042f2 | 1013 | break; |
a4576b5d | 1014 | } |
cb1042f2 | 1015 | lun = (container >> 16) & 0xFF; |
a4576b5d | 1016 | container = (u32)-1; |
cb1042f2 SM |
1017 | channel = aac_phys_to_logical(channel); |
1018 | device_config_needed = | |
1019 | (((__le32 *)aifcmd->data)[0] == | |
1020 | cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE; | |
5ca05594 RM |
1021 | if (device_config_needed == ADD) { |
1022 | device = scsi_device_lookup(dev->scsi_host_ptr, | |
1023 | channel, | |
1024 | id, | |
1025 | lun); | |
1026 | if (device) { | |
1027 | scsi_remove_device(device); | |
1028 | scsi_device_put(device); | |
1029 | } | |
1030 | } | |
cb1042f2 SM |
1031 | break; |
1032 | ||
0995ad38 | 1033 | case AifEnEnclosureManagement: |
cb1042f2 SM |
1034 | /* |
1035 | * If in JBOD mode, automatic exposure of new | |
1036 | * physical target to be suppressed until configured. | |
1037 | */ | |
1038 | if (dev->jbod) | |
1039 | break; | |
0995ad38 SM |
1040 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) { |
1041 | case EM_DRIVE_INSERTION: | |
1042 | case EM_DRIVE_REMOVAL: | |
1043 | container = le32_to_cpu( | |
1044 | ((__le32 *)aifcmd->data)[2]); | |
a4576b5d MS |
1045 | if ((container >> 28)) { |
1046 | container = (u32)-1; | |
0995ad38 | 1047 | break; |
a4576b5d | 1048 | } |
0995ad38 | 1049 | channel = (container >> 24) & 0xF; |
a4576b5d MS |
1050 | if (channel >= dev->maximum_num_channels) { |
1051 | container = (u32)-1; | |
0995ad38 | 1052 | break; |
a4576b5d | 1053 | } |
0995ad38 SM |
1054 | id = container & 0xFFFF; |
1055 | lun = (container >> 16) & 0xFF; | |
a4576b5d | 1056 | container = (u32)-1; |
0995ad38 SM |
1057 | if (id >= dev->maximum_num_physicals) { |
1058 | /* legacy dev_t ? */ | |
1059 | if ((0x2000 <= id) || lun || channel || | |
1060 | ((channel = (id >> 7) & 0x3F) >= | |
1061 | dev->maximum_num_channels)) | |
1062 | break; | |
1063 | lun = (id >> 4) & 7; | |
1064 | id &= 0xF; | |
1065 | } | |
1066 | channel = aac_phys_to_logical(channel); | |
1067 | device_config_needed = | |
1068 | (((__le32 *)aifcmd->data)[3] | |
1069 | == cpu_to_le32(EM_DRIVE_INSERTION)) ? | |
1070 | ADD : DELETE; | |
1071 | break; | |
1072 | } | |
1073 | break; | |
131256cf MH |
1074 | } |
1075 | ||
1076 | /* | |
1077 | * If we are waiting on something and this happens to be | |
1078 | * that thing then set the re-configure flag. | |
1079 | */ | |
1080 | if (container != (u32)-1) { | |
1081 | if (container >= dev->maximum_num_containers) | |
1082 | break; | |
31876f32 | 1083 | if ((dev->fsa_dev[container].config_waiting_on == |
f3307f72 | 1084 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
31876f32 | 1085 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
131256cf MH |
1086 | dev->fsa_dev[container].config_waiting_on = 0; |
1087 | } else for (container = 0; | |
1088 | container < dev->maximum_num_containers; ++container) { | |
31876f32 | 1089 | if ((dev->fsa_dev[container].config_waiting_on == |
f3307f72 | 1090 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
31876f32 | 1091 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
131256cf MH |
1092 | dev->fsa_dev[container].config_waiting_on = 0; |
1093 | } | |
1094 | break; | |
1095 | ||
1096 | case AifCmdJobProgress: | |
1097 | /* | |
1098 | * These are job progress AIF's. When a Clear is being | |
1099 | * done on a container it is initially created then hidden from | |
1100 | * the OS. When the clear completes we don't get a config | |
1101 | * change so we monitor the job status complete on a clear then | |
1102 | * wait for a container change. | |
1103 | */ | |
1104 | ||
f3307f72 CH |
1105 | if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && |
1106 | (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] || | |
1107 | ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) { | |
131256cf MH |
1108 | for (container = 0; |
1109 | container < dev->maximum_num_containers; | |
1110 | ++container) { | |
1111 | /* | |
1112 | * Stomp on all config sequencing for all | |
1113 | * containers? | |
1114 | */ | |
1115 | dev->fsa_dev[container].config_waiting_on = | |
1116 | AifEnContainerChange; | |
1117 | dev->fsa_dev[container].config_needed = ADD; | |
31876f32 MH |
1118 | dev->fsa_dev[container].config_waiting_stamp = |
1119 | jiffies; | |
131256cf MH |
1120 | } |
1121 | } | |
f3307f72 CH |
1122 | if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && |
1123 | ((__le32 *)aifcmd->data)[6] == 0 && | |
1124 | ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) { | |
131256cf MH |
1125 | for (container = 0; |
1126 | container < dev->maximum_num_containers; | |
1127 | ++container) { | |
1128 | /* | |
1129 | * Stomp on all config sequencing for all | |
1130 | * containers? | |
1131 | */ | |
1132 | dev->fsa_dev[container].config_waiting_on = | |
1133 | AifEnContainerChange; | |
1134 | dev->fsa_dev[container].config_needed = DELETE; | |
31876f32 MH |
1135 | dev->fsa_dev[container].config_waiting_stamp = |
1136 | jiffies; | |
131256cf MH |
1137 | } |
1138 | } | |
1139 | break; | |
1140 | } | |
1141 | ||
a4576b5d MS |
1142 | container = 0; |
1143 | retry_next: | |
0995ad38 | 1144 | if (device_config_needed == NOTHING) |
a4576b5d | 1145 | for (; container < dev->maximum_num_containers; ++container) { |
31876f32 MH |
1146 | if ((dev->fsa_dev[container].config_waiting_on == 0) && |
1147 | (dev->fsa_dev[container].config_needed != NOTHING) && | |
1148 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) { | |
131256cf MH |
1149 | device_config_needed = |
1150 | dev->fsa_dev[container].config_needed; | |
1151 | dev->fsa_dev[container].config_needed = NOTHING; | |
0995ad38 SM |
1152 | channel = CONTAINER_TO_CHANNEL(container); |
1153 | id = CONTAINER_TO_ID(container); | |
1154 | lun = CONTAINER_TO_LUN(container); | |
131256cf MH |
1155 | break; |
1156 | } | |
1157 | } | |
1158 | if (device_config_needed == NOTHING) | |
1159 | return; | |
1160 | ||
1161 | /* | |
1162 | * If we decided that a re-configuration needs to be done, | |
1163 | * schedule it here on the way out the door, please close the door | |
1164 | * behind you. | |
1165 | */ | |
1166 | ||
131256cf | 1167 | /* |
f64a181d | 1168 | * Find the scsi_device associated with the SCSI address, |
131256cf MH |
1169 | * and mark it as changed, invalidating the cache. This deals |
1170 | * with changes to existing device IDs. | |
1171 | */ | |
1172 | ||
1173 | if (!dev || !dev->scsi_host_ptr) | |
1174 | return; | |
1175 | /* | |
bfb35aa8 | 1176 | * force reload of disk info via aac_probe_container |
131256cf | 1177 | */ |
0995ad38 SM |
1178 | if ((channel == CONTAINER_CHANNEL) && |
1179 | (device_config_needed != NOTHING)) { | |
1180 | if (dev->fsa_dev[container].valid == 1) | |
1181 | dev->fsa_dev[container].valid = 2; | |
bfb35aa8 | 1182 | aac_probe_container(dev, container); |
0995ad38 SM |
1183 | } |
1184 | device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun); | |
131256cf MH |
1185 | if (device) { |
1186 | switch (device_config_needed) { | |
1187 | case DELETE: | |
9cccde93 RM |
1188 | #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE)) |
1189 | scsi_remove_device(device); | |
1190 | #else | |
0995ad38 SM |
1191 | if (scsi_device_online(device)) { |
1192 | scsi_device_set_state(device, SDEV_OFFLINE); | |
1193 | sdev_printk(KERN_INFO, device, | |
1194 | "Device offlined - %s\n", | |
1195 | (channel == CONTAINER_CHANNEL) ? | |
1196 | "array deleted" : | |
1197 | "enclosure services event"); | |
1198 | } | |
9cccde93 | 1199 | #endif |
0995ad38 SM |
1200 | break; |
1201 | case ADD: | |
1202 | if (!scsi_device_online(device)) { | |
1203 | sdev_printk(KERN_INFO, device, | |
1204 | "Device online - %s\n", | |
1205 | (channel == CONTAINER_CHANNEL) ? | |
1206 | "array created" : | |
1207 | "enclosure services event"); | |
1208 | scsi_device_set_state(device, SDEV_RUNNING); | |
1209 | } | |
1210 | /* FALLTHRU */ | |
131256cf | 1211 | case CHANGE: |
0995ad38 SM |
1212 | if ((channel == CONTAINER_CHANNEL) |
1213 | && (!dev->fsa_dev[container].valid)) { | |
9cccde93 RM |
1214 | #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE)) |
1215 | scsi_remove_device(device); | |
1216 | #else | |
0995ad38 SM |
1217 | if (!scsi_device_online(device)) |
1218 | break; | |
1219 | scsi_device_set_state(device, SDEV_OFFLINE); | |
1220 | sdev_printk(KERN_INFO, device, | |
1221 | "Device offlined - %s\n", | |
1222 | "array failed"); | |
9cccde93 | 1223 | #endif |
0995ad38 SM |
1224 | break; |
1225 | } | |
131256cf MH |
1226 | scsi_rescan_device(&device->sdev_gendev); |
1227 | ||
1228 | default: | |
1229 | break; | |
1230 | } | |
1231 | scsi_device_put(device); | |
0995ad38 | 1232 | device_config_needed = NOTHING; |
131256cf | 1233 | } |
0995ad38 SM |
1234 | if (device_config_needed == ADD) |
1235 | scsi_add_device(dev->scsi_host_ptr, channel, id, lun); | |
a4576b5d MS |
1236 | if (channel == CONTAINER_CHANNEL) { |
1237 | container++; | |
1238 | device_config_needed = NOTHING; | |
1239 | goto retry_next; | |
1240 | } | |
131256cf MH |
1241 | } |
1242 | ||
29c97684 | 1243 | static int _aac_reset_adapter(struct aac_dev *aac, int forced) |
8c867b25 MH |
1244 | { |
1245 | int index, quirks; | |
8c867b25 MH |
1246 | int retval; |
1247 | struct Scsi_Host *host; | |
1248 | struct scsi_device *dev; | |
1249 | struct scsi_cmnd *command; | |
1250 | struct scsi_cmnd *command_list; | |
29c97684 | 1251 | int jafo = 0; |
8c867b25 MH |
1252 | |
1253 | /* | |
1254 | * Assumptions: | |
29c97684 SM |
1255 | * - host is locked, unless called by the aacraid thread. |
1256 | * (a matter of convenience, due to legacy issues surrounding | |
1257 | * eh_host_adapter_reset). | |
8c867b25 MH |
1258 | * - in_reset is asserted, so no new i/o is getting to the |
1259 | * card. | |
29c97684 SM |
1260 | * - The card is dead, or will be very shortly ;-/ so no new |
1261 | * commands are completing in the interrupt service. | |
8c867b25 MH |
1262 | */ |
1263 | host = aac->scsi_host_ptr; | |
1264 | scsi_block_requests(host); | |
1265 | aac_adapter_disable_int(aac); | |
29c97684 SM |
1266 | if (aac->thread->pid != current->pid) { |
1267 | spin_unlock_irq(host->host_lock); | |
1268 | kthread_stop(aac->thread); | |
1269 | jafo = 1; | |
1270 | } | |
8c867b25 MH |
1271 | |
1272 | /* | |
1273 | * If a positive health, means in a known DEAD PANIC | |
1274 | * state and the adapter could be reset to `try again'. | |
1275 | */ | |
29c97684 | 1276 | retval = aac_adapter_restart(aac, forced ? 0 : aac_adapter_check_health(aac)); |
8c867b25 MH |
1277 | |
1278 | if (retval) | |
1279 | goto out; | |
8c867b25 | 1280 | |
d18b448f MH |
1281 | /* |
1282 | * Loop through the fibs, close the synchronous FIBS | |
1283 | */ | |
33bb3b29 | 1284 | for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) { |
d18b448f | 1285 | struct fib *fib = &aac->fibs[index]; |
a8166a52 MH |
1286 | if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) && |
1287 | (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) { | |
d18b448f MH |
1288 | unsigned long flagv; |
1289 | spin_lock_irqsave(&fib->event_lock, flagv); | |
1290 | up(&fib->event_wait); | |
1291 | spin_unlock_irqrestore(&fib->event_lock, flagv); | |
1292 | schedule(); | |
33bb3b29 | 1293 | retval = 0; |
d18b448f MH |
1294 | } |
1295 | } | |
33bb3b29 MH |
1296 | /* Give some extra time for ioctls to complete. */ |
1297 | if (retval == 0) | |
1298 | ssleep(2); | |
8c867b25 MH |
1299 | index = aac->cardtype; |
1300 | ||
1301 | /* | |
1302 | * Re-initialize the adapter, first free resources, then carefully | |
1303 | * apply the initialization sequence to come back again. Only risk | |
1304 | * is a change in Firmware dropping cache, it is assumed the caller | |
1305 | * will ensure that i/o is queisced and the card is flushed in that | |
1306 | * case. | |
1307 | */ | |
1308 | aac_fib_map_free(aac); | |
8c867b25 MH |
1309 | pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys); |
1310 | aac->comm_addr = NULL; | |
1311 | aac->comm_phys = 0; | |
1312 | kfree(aac->queues); | |
1313 | aac->queues = NULL; | |
1314 | free_irq(aac->pdev->irq, aac); | |
d0efab26 VA |
1315 | if (aac->msi) |
1316 | pci_disable_msi(aac->pdev); | |
8c867b25 MH |
1317 | kfree(aac->fsa_dev); |
1318 | aac->fsa_dev = NULL; | |
94cf6ba1 SM |
1319 | quirks = aac_get_driver_ident(index)->quirks; |
1320 | if (quirks & AAC_QUIRK_31BIT) { | |
929a22a5 YH |
1321 | if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(31)))) || |
1322 | ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(31))))) | |
8c867b25 MH |
1323 | goto out; |
1324 | } else { | |
284901a9 YH |
1325 | if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32)))) || |
1326 | ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(32))))) | |
8c867b25 MH |
1327 | goto out; |
1328 | } | |
1329 | if ((retval = (*(aac_get_driver_ident(index)->init))(aac))) | |
1330 | goto out; | |
94cf6ba1 | 1331 | if (quirks & AAC_QUIRK_31BIT) |
284901a9 | 1332 | if ((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32)))) |
8c867b25 | 1333 | goto out; |
29c97684 SM |
1334 | if (jafo) { |
1335 | aac->thread = kthread_run(aac_command_thread, aac, aac->name); | |
1336 | if (IS_ERR(aac->thread)) { | |
1337 | retval = PTR_ERR(aac->thread); | |
1338 | goto out; | |
1339 | } | |
8c867b25 MH |
1340 | } |
1341 | (void)aac_get_adapter_info(aac); | |
8c867b25 | 1342 | if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) { |
8ce3eca4 SM |
1343 | host->sg_tablesize = 34; |
1344 | host->max_sectors = (host->sg_tablesize * 8) + 112; | |
1345 | } | |
1346 | if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) { | |
1347 | host->sg_tablesize = 17; | |
1348 | host->max_sectors = (host->sg_tablesize * 8) + 112; | |
1349 | } | |
8c867b25 MH |
1350 | aac_get_config_status(aac, 1); |
1351 | aac_get_containers(aac); | |
1352 | /* | |
1353 | * This is where the assumption that the Adapter is quiesced | |
1354 | * is important. | |
1355 | */ | |
1356 | command_list = NULL; | |
1357 | __shost_for_each_device(dev, host) { | |
1358 | unsigned long flags; | |
1359 | spin_lock_irqsave(&dev->list_lock, flags); | |
1360 | list_for_each_entry(command, &dev->cmd_list, list) | |
1361 | if (command->SCp.phase == AAC_OWNER_FIRMWARE) { | |
1362 | command->SCp.buffer = (struct scatterlist *)command_list; | |
1363 | command_list = command; | |
1364 | } | |
1365 | spin_unlock_irqrestore(&dev->list_lock, flags); | |
1366 | } | |
1367 | while ((command = command_list)) { | |
1368 | command_list = (struct scsi_cmnd *)command->SCp.buffer; | |
1369 | command->SCp.buffer = NULL; | |
1370 | command->result = DID_OK << 16 | |
1371 | | COMMAND_COMPLETE << 8 | |
1372 | | SAM_STAT_TASK_SET_FULL; | |
1373 | command->SCp.phase = AAC_OWNER_ERROR_HANDLER; | |
1374 | command->scsi_done(command); | |
1375 | } | |
1376 | retval = 0; | |
1377 | ||
1378 | out: | |
1379 | aac->in_reset = 0; | |
1380 | scsi_unblock_requests(host); | |
29c97684 SM |
1381 | if (jafo) { |
1382 | spin_lock_irq(host->host_lock); | |
1383 | } | |
1384 | return retval; | |
1385 | } | |
1386 | ||
1387 | int aac_reset_adapter(struct aac_dev * aac, int forced) | |
1388 | { | |
1389 | unsigned long flagv = 0; | |
1390 | int retval; | |
1391 | struct Scsi_Host * host; | |
1392 | ||
1393 | if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) | |
1394 | return -EBUSY; | |
1395 | ||
1396 | if (aac->in_reset) { | |
1397 | spin_unlock_irqrestore(&aac->fib_lock, flagv); | |
1398 | return -EBUSY; | |
1399 | } | |
1400 | aac->in_reset = 1; | |
1401 | spin_unlock_irqrestore(&aac->fib_lock, flagv); | |
1402 | ||
1403 | /* | |
1404 | * Wait for all commands to complete to this specific | |
1405 | * target (block maximum 60 seconds). Although not necessary, | |
1406 | * it does make us a good storage citizen. | |
1407 | */ | |
1408 | host = aac->scsi_host_ptr; | |
1409 | scsi_block_requests(host); | |
1410 | if (forced < 2) for (retval = 60; retval; --retval) { | |
1411 | struct scsi_device * dev; | |
1412 | struct scsi_cmnd * command; | |
1413 | int active = 0; | |
1414 | ||
1415 | __shost_for_each_device(dev, host) { | |
1416 | spin_lock_irqsave(&dev->list_lock, flagv); | |
1417 | list_for_each_entry(command, &dev->cmd_list, list) { | |
1418 | if (command->SCp.phase == AAC_OWNER_FIRMWARE) { | |
1419 | active++; | |
1420 | break; | |
1421 | } | |
1422 | } | |
1423 | spin_unlock_irqrestore(&dev->list_lock, flagv); | |
1424 | if (active) | |
1425 | break; | |
1426 | ||
1427 | } | |
1428 | /* | |
1429 | * We can exit If all the commands are complete | |
1430 | */ | |
1431 | if (active == 0) | |
1432 | break; | |
1433 | ssleep(1); | |
1434 | } | |
1435 | ||
1436 | /* Quiesce build, flush cache, write through mode */ | |
f858317d SM |
1437 | if (forced < 2) |
1438 | aac_send_shutdown(aac); | |
29c97684 | 1439 | spin_lock_irqsave(host->host_lock, flagv); |
f858317d | 1440 | retval = _aac_reset_adapter(aac, forced ? forced : ((aac_check_reset != 0) && (aac_check_reset != 1))); |
29c97684 SM |
1441 | spin_unlock_irqrestore(host->host_lock, flagv); |
1442 | ||
f858317d | 1443 | if ((forced < 2) && (retval == -ENODEV)) { |
29c97684 SM |
1444 | /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ |
1445 | struct fib * fibctx = aac_fib_alloc(aac); | |
1446 | if (fibctx) { | |
1447 | struct aac_pause *cmd; | |
1448 | int status; | |
1449 | ||
1450 | aac_fib_init(fibctx); | |
1451 | ||
1452 | cmd = (struct aac_pause *) fib_data(fibctx); | |
1453 | ||
1454 | cmd->command = cpu_to_le32(VM_ContainerConfig); | |
1455 | cmd->type = cpu_to_le32(CT_PAUSE_IO); | |
1456 | cmd->timeout = cpu_to_le32(1); | |
1457 | cmd->min = cpu_to_le32(1); | |
1458 | cmd->noRescan = cpu_to_le32(1); | |
1459 | cmd->count = cpu_to_le32(0); | |
1460 | ||
1461 | status = aac_fib_send(ContainerCommand, | |
1462 | fibctx, | |
1463 | sizeof(struct aac_pause), | |
1464 | FsaNormal, | |
1465 | -2 /* Timeout silently */, 1, | |
1466 | NULL, NULL); | |
1467 | ||
1468 | if (status >= 0) | |
1469 | aac_fib_complete(fibctx); | |
cacb6dc3 PNRCEH |
1470 | /* FIB should be freed only after getting |
1471 | * the response from the F/W */ | |
1472 | if (status != -ERESTARTSYS) | |
1473 | aac_fib_free(fibctx); | |
29c97684 SM |
1474 | } |
1475 | } | |
1476 | ||
8c867b25 MH |
1477 | return retval; |
1478 | } | |
1479 | ||
1480 | int aac_check_health(struct aac_dev * aac) | |
1481 | { | |
1482 | int BlinkLED; | |
1483 | unsigned long time_now, flagv = 0; | |
1484 | struct list_head * entry; | |
1485 | struct Scsi_Host * host; | |
1486 | ||
1487 | /* Extending the scope of fib_lock slightly to protect aac->in_reset */ | |
1488 | if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) | |
1489 | return 0; | |
1490 | ||
1491 | if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) { | |
1492 | spin_unlock_irqrestore(&aac->fib_lock, flagv); | |
1493 | return 0; /* OK */ | |
1494 | } | |
1495 | ||
1496 | aac->in_reset = 1; | |
1497 | ||
1498 | /* Fake up an AIF: | |
1499 | * aac_aifcmd.command = AifCmdEventNotify = 1 | |
1500 | * aac_aifcmd.seqnum = 0xFFFFFFFF | |
1501 | * aac_aifcmd.data[0] = AifEnExpEvent = 23 | |
1502 | * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3 | |
1503 | * aac.aifcmd.data[2] = AifHighPriority = 3 | |
1504 | * aac.aifcmd.data[3] = BlinkLED | |
1505 | */ | |
1506 | ||
1507 | time_now = jiffies/HZ; | |
1508 | entry = aac->fib_list.next; | |
1509 | ||
1510 | /* | |
1511 | * For each Context that is on the | |
1512 | * fibctxList, make a copy of the | |
1513 | * fib, and then set the event to wake up the | |
1514 | * thread that is waiting for it. | |
1515 | */ | |
1516 | while (entry != &aac->fib_list) { | |
1517 | /* | |
1518 | * Extract the fibctx | |
1519 | */ | |
1520 | struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next); | |
1521 | struct hw_fib * hw_fib; | |
1522 | struct fib * fib; | |
1523 | /* | |
1524 | * Check if the queue is getting | |
1525 | * backlogged | |
1526 | */ | |
1527 | if (fibctx->count > 20) { | |
1528 | /* | |
1529 | * It's *not* jiffies folks, | |
1530 | * but jiffies / HZ, so do not | |
1531 | * panic ... | |
1532 | */ | |
1533 | u32 time_last = fibctx->jiffies; | |
1534 | /* | |
1535 | * Has it been > 2 minutes | |
1536 | * since the last read off | |
1537 | * the queue? | |
1538 | */ | |
1539 | if ((time_now - time_last) > aif_timeout) { | |
1540 | entry = entry->next; | |
1541 | aac_close_fib_context(aac, fibctx); | |
1542 | continue; | |
1543 | } | |
1544 | } | |
1545 | /* | |
1546 | * Warning: no sleep allowed while | |
1547 | * holding spinlock | |
1548 | */ | |
4dbc22d7 SM |
1549 | hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC); |
1550 | fib = kzalloc(sizeof(struct fib), GFP_ATOMIC); | |
8c867b25 MH |
1551 | if (fib && hw_fib) { |
1552 | struct aac_aifcmd * aif; | |
1553 | ||
a8166a52 | 1554 | fib->hw_fib_va = hw_fib; |
8c867b25 MH |
1555 | fib->dev = aac; |
1556 | aac_fib_init(fib); | |
1557 | fib->type = FSAFS_NTC_FIB_CONTEXT; | |
1558 | fib->size = sizeof (struct fib); | |
1559 | fib->data = hw_fib->data; | |
1560 | aif = (struct aac_aifcmd *)hw_fib->data; | |
1561 | aif->command = cpu_to_le32(AifCmdEventNotify); | |
a3940da5 SM |
1562 | aif->seqnum = cpu_to_le32(0xFFFFFFFF); |
1563 | ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent); | |
1564 | ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic); | |
1565 | ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority); | |
1566 | ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED); | |
8c867b25 MH |
1567 | |
1568 | /* | |
1569 | * Put the FIB onto the | |
1570 | * fibctx's fibs | |
1571 | */ | |
1572 | list_add_tail(&fib->fiblink, &fibctx->fib_list); | |
1573 | fibctx->count++; | |
1574 | /* | |
1575 | * Set the event to wake up the | |
1576 | * thread that will waiting. | |
1577 | */ | |
1578 | up(&fibctx->wait_sem); | |
1579 | } else { | |
1580 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); | |
1581 | kfree(fib); | |
1582 | kfree(hw_fib); | |
1583 | } | |
1584 | entry = entry->next; | |
1585 | } | |
1586 | ||
1587 | spin_unlock_irqrestore(&aac->fib_lock, flagv); | |
1588 | ||
1589 | if (BlinkLED < 0) { | |
1590 | printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED); | |
1591 | goto out; | |
1592 | } | |
1593 | ||
1594 | printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED); | |
1595 | ||
2f7ecc55 | 1596 | if (!aac_check_reset || ((aac_check_reset == 1) && |
a3940da5 SM |
1597 | (aac->supplement_adapter_info.SupportedOptions2 & |
1598 | AAC_OPTION_IGNORE_RESET))) | |
29c97684 | 1599 | goto out; |
8c867b25 | 1600 | host = aac->scsi_host_ptr; |
29c97684 SM |
1601 | if (aac->thread->pid != current->pid) |
1602 | spin_lock_irqsave(host->host_lock, flagv); | |
f858317d | 1603 | BlinkLED = _aac_reset_adapter(aac, aac_check_reset != 1); |
29c97684 SM |
1604 | if (aac->thread->pid != current->pid) |
1605 | spin_unlock_irqrestore(host->host_lock, flagv); | |
8c867b25 MH |
1606 | return BlinkLED; |
1607 | ||
1608 | out: | |
1609 | aac->in_reset = 0; | |
1610 | return BlinkLED; | |
1611 | } | |
1612 | ||
1613 | ||
1da177e4 LT |
1614 | /** |
1615 | * aac_command_thread - command processing thread | |
1616 | * @dev: Adapter to monitor | |
1617 | * | |
1618 | * Waits on the commandready event in it's queue. When the event gets set | |
1619 | * it will pull FIBs off it's queue. It will continue to pull FIBs off | |
1620 | * until the queue is empty. When the queue is empty it will wait for | |
1621 | * more FIBs. | |
1622 | */ | |
8ce3eca4 | 1623 | |
fe27381d | 1624 | int aac_command_thread(void *data) |
1da177e4 | 1625 | { |
fe27381d | 1626 | struct aac_dev *dev = data; |
1da177e4 LT |
1627 | struct hw_fib *hw_fib, *hw_newfib; |
1628 | struct fib *fib, *newfib; | |
1da177e4 LT |
1629 | struct aac_fib_context *fibctx; |
1630 | unsigned long flags; | |
1631 | DECLARE_WAITQUEUE(wait, current); | |
29c97684 SM |
1632 | unsigned long next_jiffies = jiffies + HZ; |
1633 | unsigned long next_check_jiffies = next_jiffies; | |
1634 | long difference = HZ; | |
1da177e4 LT |
1635 | |
1636 | /* | |
1637 | * We can only have one thread per adapter for AIF's. | |
1638 | */ | |
1639 | if (dev->aif_thread) | |
1640 | return -EINVAL; | |
fe27381d | 1641 | |
1da177e4 LT |
1642 | /* |
1643 | * Let the DPC know it has a place to send the AIF's to. | |
1644 | */ | |
1645 | dev->aif_thread = 1; | |
2f130980 | 1646 | add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); |
1da177e4 | 1647 | set_current_state(TASK_INTERRUPTIBLE); |
2f130980 | 1648 | dprintk ((KERN_INFO "aac_command_thread start\n")); |
8ce3eca4 | 1649 | while (1) { |
2f130980 MH |
1650 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
1651 | while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) { | |
1da177e4 LT |
1652 | struct list_head *entry; |
1653 | struct aac_aifcmd * aifcmd; | |
1654 | ||
1655 | set_current_state(TASK_RUNNING); | |
8ce3eca4 | 1656 | |
2f130980 | 1657 | entry = dev->queues->queue[HostNormCmdQueue].cmdq.next; |
1da177e4 | 1658 | list_del(entry); |
8ce3eca4 | 1659 | |
2f130980 | 1660 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
1da177e4 LT |
1661 | fib = list_entry(entry, struct fib, fiblink); |
1662 | /* | |
8ce3eca4 SM |
1663 | * We will process the FIB here or pass it to a |
1664 | * worker thread that is TBD. We Really can't | |
1da177e4 LT |
1665 | * do anything at this point since we don't have |
1666 | * anything defined for this thread to do. | |
1667 | */ | |
a8166a52 | 1668 | hw_fib = fib->hw_fib_va; |
1da177e4 LT |
1669 | memset(fib, 0, sizeof(struct fib)); |
1670 | fib->type = FSAFS_NTC_FIB_CONTEXT; | |
8ce3eca4 | 1671 | fib->size = sizeof(struct fib); |
a8166a52 | 1672 | fib->hw_fib_va = hw_fib; |
1da177e4 LT |
1673 | fib->data = hw_fib->data; |
1674 | fib->dev = dev; | |
1675 | /* | |
1676 | * We only handle AifRequest fibs from the adapter. | |
1677 | */ | |
1678 | aifcmd = (struct aac_aifcmd *) hw_fib->data; | |
1679 | if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { | |
1680 | /* Handle Driver Notify Events */ | |
131256cf | 1681 | aac_handle_aif(dev, fib); |
56b58712 | 1682 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
bfb35aa8 | 1683 | aac_fib_adapter_complete(fib, (u16)sizeof(u32)); |
1da177e4 | 1684 | } else { |
1da177e4 LT |
1685 | /* The u32 here is important and intended. We are using |
1686 | 32bit wrapping time to fit the adapter field */ | |
8ce3eca4 | 1687 | |
1da177e4 LT |
1688 | u32 time_now, time_last; |
1689 | unsigned long flagv; | |
2f130980 MH |
1690 | unsigned num; |
1691 | struct hw_fib ** hw_fib_pool, ** hw_fib_p; | |
1692 | struct fib ** fib_pool, ** fib_p; | |
8ce3eca4 | 1693 | |
131256cf | 1694 | /* Sniff events */ |
8ce3eca4 | 1695 | if ((aifcmd->command == |
131256cf | 1696 | cpu_to_le32(AifCmdEventNotify)) || |
8ce3eca4 | 1697 | (aifcmd->command == |
131256cf MH |
1698 | cpu_to_le32(AifCmdJobProgress))) { |
1699 | aac_handle_aif(dev, fib); | |
1700 | } | |
29c97684 | 1701 | |
1da177e4 LT |
1702 | time_now = jiffies/HZ; |
1703 | ||
2f130980 MH |
1704 | /* |
1705 | * Warning: no sleep allowed while | |
1706 | * holding spinlock. We take the estimate | |
1707 | * and pre-allocate a set of fibs outside the | |
1708 | * lock. | |
1709 | */ | |
1710 | num = le32_to_cpu(dev->init->AdapterFibsSize) | |
1711 | / sizeof(struct hw_fib); /* some extra */ | |
1712 | spin_lock_irqsave(&dev->fib_lock, flagv); | |
1713 | entry = dev->fib_list.next; | |
1714 | while (entry != &dev->fib_list) { | |
1715 | entry = entry->next; | |
1716 | ++num; | |
1717 | } | |
1718 | spin_unlock_irqrestore(&dev->fib_lock, flagv); | |
1719 | hw_fib_pool = NULL; | |
1720 | fib_pool = NULL; | |
1721 | if (num | |
1722 | && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL))) | |
1723 | && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) { | |
1724 | hw_fib_p = hw_fib_pool; | |
1725 | fib_p = fib_pool; | |
1726 | while (hw_fib_p < &hw_fib_pool[num]) { | |
1727 | if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) { | |
1728 | --hw_fib_p; | |
1729 | break; | |
1730 | } | |
1731 | if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) { | |
1732 | kfree(*(--hw_fib_p)); | |
1733 | break; | |
1734 | } | |
1735 | } | |
1736 | if ((num = hw_fib_p - hw_fib_pool) == 0) { | |
1737 | kfree(fib_pool); | |
1738 | fib_pool = NULL; | |
1739 | kfree(hw_fib_pool); | |
1740 | hw_fib_pool = NULL; | |
1741 | } | |
c9475cb0 | 1742 | } else { |
2f130980 MH |
1743 | kfree(hw_fib_pool); |
1744 | hw_fib_pool = NULL; | |
1745 | } | |
1da177e4 LT |
1746 | spin_lock_irqsave(&dev->fib_lock, flagv); |
1747 | entry = dev->fib_list.next; | |
1748 | /* | |
8ce3eca4 | 1749 | * For each Context that is on the |
1da177e4 LT |
1750 | * fibctxList, make a copy of the |
1751 | * fib, and then set the event to wake up the | |
1752 | * thread that is waiting for it. | |
1753 | */ | |
2f130980 MH |
1754 | hw_fib_p = hw_fib_pool; |
1755 | fib_p = fib_pool; | |
1da177e4 LT |
1756 | while (entry != &dev->fib_list) { |
1757 | /* | |
1758 | * Extract the fibctx | |
1759 | */ | |
1760 | fibctx = list_entry(entry, struct aac_fib_context, next); | |
1761 | /* | |
1762 | * Check if the queue is getting | |
1763 | * backlogged | |
1764 | */ | |
1765 | if (fibctx->count > 20) | |
1766 | { | |
1767 | /* | |
1768 | * It's *not* jiffies folks, | |
1769 | * but jiffies / HZ so do not | |
1770 | * panic ... | |
1771 | */ | |
1772 | time_last = fibctx->jiffies; | |
1773 | /* | |
8ce3eca4 | 1774 | * Has it been > 2 minutes |
1da177e4 LT |
1775 | * since the last read off |
1776 | * the queue? | |
1777 | */ | |
404d9a90 | 1778 | if ((time_now - time_last) > aif_timeout) { |
1da177e4 LT |
1779 | entry = entry->next; |
1780 | aac_close_fib_context(dev, fibctx); | |
1781 | continue; | |
1782 | } | |
1783 | } | |
1784 | /* | |
1785 | * Warning: no sleep allowed while | |
1786 | * holding spinlock | |
1787 | */ | |
2f130980 MH |
1788 | if (hw_fib_p < &hw_fib_pool[num]) { |
1789 | hw_newfib = *hw_fib_p; | |
1790 | *(hw_fib_p++) = NULL; | |
1791 | newfib = *fib_p; | |
1792 | *(fib_p++) = NULL; | |
1da177e4 LT |
1793 | /* |
1794 | * Make the copy of the FIB | |
1795 | */ | |
1796 | memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib)); | |
1797 | memcpy(newfib, fib, sizeof(struct fib)); | |
a8166a52 | 1798 | newfib->hw_fib_va = hw_newfib; |
1da177e4 LT |
1799 | /* |
1800 | * Put the FIB onto the | |
1801 | * fibctx's fibs | |
1802 | */ | |
1803 | list_add_tail(&newfib->fiblink, &fibctx->fib_list); | |
1804 | fibctx->count++; | |
8ce3eca4 | 1805 | /* |
1da177e4 | 1806 | * Set the event to wake up the |
2f130980 | 1807 | * thread that is waiting. |
1da177e4 LT |
1808 | */ |
1809 | up(&fibctx->wait_sem); | |
1810 | } else { | |
1811 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); | |
1da177e4 LT |
1812 | } |
1813 | entry = entry->next; | |
1814 | } | |
1815 | /* | |
1816 | * Set the status of this FIB | |
1817 | */ | |
56b58712 | 1818 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
bfb35aa8 | 1819 | aac_fib_adapter_complete(fib, sizeof(u32)); |
1da177e4 | 1820 | spin_unlock_irqrestore(&dev->fib_lock, flagv); |
2f130980 MH |
1821 | /* Free up the remaining resources */ |
1822 | hw_fib_p = hw_fib_pool; | |
1823 | fib_p = fib_pool; | |
1824 | while (hw_fib_p < &hw_fib_pool[num]) { | |
c9475cb0 JJ |
1825 | kfree(*hw_fib_p); |
1826 | kfree(*fib_p); | |
2f130980 MH |
1827 | ++fib_p; |
1828 | ++hw_fib_p; | |
1829 | } | |
c9475cb0 JJ |
1830 | kfree(hw_fib_pool); |
1831 | kfree(fib_pool); | |
1da177e4 | 1832 | } |
1da177e4 | 1833 | kfree(fib); |
2f130980 | 1834 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
1da177e4 LT |
1835 | } |
1836 | /* | |
1837 | * There are no more AIF's | |
1838 | */ | |
2f130980 | 1839 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
29c97684 SM |
1840 | |
1841 | /* | |
1842 | * Background activity | |
1843 | */ | |
1844 | if ((time_before(next_check_jiffies,next_jiffies)) | |
1845 | && ((difference = next_check_jiffies - jiffies) <= 0)) { | |
1846 | next_check_jiffies = next_jiffies; | |
1847 | if (aac_check_health(dev) == 0) { | |
1848 | difference = ((long)(unsigned)check_interval) | |
1849 | * HZ; | |
1850 | next_check_jiffies = jiffies + difference; | |
1851 | } else if (!dev->queues) | |
1852 | break; | |
1853 | } | |
1854 | if (!time_before(next_check_jiffies,next_jiffies) | |
1855 | && ((difference = next_jiffies - jiffies) <= 0)) { | |
1856 | struct timeval now; | |
1857 | int ret; | |
1858 | ||
1859 | /* Don't even try to talk to adapter if its sick */ | |
1860 | ret = aac_check_health(dev); | |
1861 | if (!ret && !dev->queues) | |
1862 | break; | |
1863 | next_check_jiffies = jiffies | |
1864 | + ((long)(unsigned)check_interval) | |
1865 | * HZ; | |
1866 | do_gettimeofday(&now); | |
1867 | ||
1868 | /* Synchronize our watches */ | |
1869 | if (((1000000 - (1000000 / HZ)) > now.tv_usec) | |
1870 | && (now.tv_usec > (1000000 / HZ))) | |
1871 | difference = (((1000000 - now.tv_usec) * HZ) | |
1872 | + 500000) / 1000000; | |
1873 | else if (ret == 0) { | |
1874 | struct fib *fibptr; | |
1875 | ||
1876 | if ((fibptr = aac_fib_alloc(dev))) { | |
cacb6dc3 | 1877 | int status; |
f3307f72 | 1878 | __le32 *info; |
29c97684 SM |
1879 | |
1880 | aac_fib_init(fibptr); | |
1881 | ||
f3307f72 | 1882 | info = (__le32 *) fib_data(fibptr); |
29c97684 SM |
1883 | if (now.tv_usec > 500000) |
1884 | ++now.tv_sec; | |
1885 | ||
1886 | *info = cpu_to_le32(now.tv_sec); | |
1887 | ||
cacb6dc3 | 1888 | status = aac_fib_send(SendHostTime, |
29c97684 SM |
1889 | fibptr, |
1890 | sizeof(*info), | |
1891 | FsaNormal, | |
1892 | 1, 1, | |
1893 | NULL, | |
1894 | NULL); | |
cacb6dc3 PNRCEH |
1895 | /* Do not set XferState to zero unless |
1896 | * receives a response from F/W */ | |
1897 | if (status >= 0) | |
1898 | aac_fib_complete(fibptr); | |
1899 | /* FIB should be freed only after | |
1900 | * getting the response from the F/W */ | |
1901 | if (status != -ERESTARTSYS) | |
1902 | aac_fib_free(fibptr); | |
29c97684 SM |
1903 | } |
1904 | difference = (long)(unsigned)update_interval*HZ; | |
1905 | } else { | |
1906 | /* retry shortly */ | |
1907 | difference = 10 * HZ; | |
1908 | } | |
1909 | next_jiffies = jiffies + difference; | |
1910 | if (time_before(next_check_jiffies,next_jiffies)) | |
1911 | difference = next_check_jiffies - jiffies; | |
1912 | } | |
1913 | if (difference <= 0) | |
1914 | difference = 1; | |
1915 | set_current_state(TASK_INTERRUPTIBLE); | |
1916 | schedule_timeout(difference); | |
1da177e4 | 1917 | |
fe27381d | 1918 | if (kthread_should_stop()) |
1da177e4 | 1919 | break; |
1da177e4 | 1920 | } |
2f130980 MH |
1921 | if (dev->queues) |
1922 | remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); | |
1da177e4 | 1923 | dev->aif_thread = 0; |
2f130980 | 1924 | return 0; |
1da177e4 | 1925 | } |