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1da177e4 LT |
1 | /* |
2 | * Adaptec AAC series RAID controller driver | |
3 | * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com> | |
4 | * | |
5 | * based on the old aacraid driver that is.. | |
6 | * Adaptec aacraid device driver for Linux. | |
7 | * | |
03d44337 | 8 | * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com) |
1da177e4 LT |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2, or (at your option) | |
13 | * any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; see the file COPYING. If not, write to | |
22 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
23 | * | |
24 | * Module Name: | |
25 | * commsup.c | |
26 | * | |
27 | * Abstract: Contain all routines that are required for FSA host/adapter | |
7c00ffa3 | 28 | * communication. |
1da177e4 LT |
29 | * |
30 | */ | |
31 | ||
32 | #include <linux/kernel.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/types.h> | |
35 | #include <linux/sched.h> | |
36 | #include <linux/pci.h> | |
37 | #include <linux/spinlock.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/completion.h> | |
40 | #include <linux/blkdev.h> | |
164006da | 41 | #include <linux/delay.h> |
fe27381d | 42 | #include <linux/kthread.h> |
6a3670c4 | 43 | #include <linux/interrupt.h> |
8c867b25 | 44 | #include <scsi/scsi.h> |
7c00ffa3 | 45 | #include <scsi/scsi_host.h> |
131256cf | 46 | #include <scsi/scsi_device.h> |
8c867b25 | 47 | #include <scsi/scsi_cmnd.h> |
1da177e4 LT |
48 | #include <asm/semaphore.h> |
49 | ||
50 | #include "aacraid.h" | |
51 | ||
52 | /** | |
53 | * fib_map_alloc - allocate the fib objects | |
54 | * @dev: Adapter to allocate for | |
55 | * | |
56 | * Allocate and map the shared PCI space for the FIB blocks used to | |
57 | * talk to the Adaptec firmware. | |
58 | */ | |
8ce3eca4 | 59 | |
1da177e4 LT |
60 | static int fib_map_alloc(struct aac_dev *dev) |
61 | { | |
7c00ffa3 MH |
62 | dprintk((KERN_INFO |
63 | "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n", | |
64 | dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue, | |
65 | AAC_NUM_MGT_FIB, &dev->hw_fib_pa)); | |
66 | if((dev->hw_fib_va = pci_alloc_consistent(dev->pdev, dev->max_fib_size | |
67 | * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB), | |
68 | &dev->hw_fib_pa))==NULL) | |
1da177e4 LT |
69 | return -ENOMEM; |
70 | return 0; | |
71 | } | |
72 | ||
73 | /** | |
bfb35aa8 | 74 | * aac_fib_map_free - free the fib objects |
1da177e4 LT |
75 | * @dev: Adapter to free |
76 | * | |
77 | * Free the PCI mappings and the memory allocated for FIB blocks | |
78 | * on this adapter. | |
79 | */ | |
80 | ||
bfb35aa8 | 81 | void aac_fib_map_free(struct aac_dev *dev) |
1da177e4 | 82 | { |
9ad5204d SM |
83 | pci_free_consistent(dev->pdev, |
84 | dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB), | |
85 | dev->hw_fib_va, dev->hw_fib_pa); | |
86 | dev->hw_fib_va = NULL; | |
87 | dev->hw_fib_pa = 0; | |
1da177e4 LT |
88 | } |
89 | ||
90 | /** | |
bfb35aa8 | 91 | * aac_fib_setup - setup the fibs |
1da177e4 LT |
92 | * @dev: Adapter to set up |
93 | * | |
94 | * Allocate the PCI space for the fibs, map it and then intialise the | |
95 | * fib area, the unmapped fib data and also the free list | |
96 | */ | |
97 | ||
bfb35aa8 | 98 | int aac_fib_setup(struct aac_dev * dev) |
1da177e4 LT |
99 | { |
100 | struct fib *fibptr; | |
a8166a52 | 101 | struct hw_fib *hw_fib; |
1da177e4 LT |
102 | dma_addr_t hw_fib_pa; |
103 | int i; | |
7c00ffa3 MH |
104 | |
105 | while (((i = fib_map_alloc(dev)) == -ENOMEM) | |
106 | && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) { | |
107 | dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1); | |
108 | dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB; | |
109 | } | |
110 | if (i<0) | |
1da177e4 | 111 | return -ENOMEM; |
8ce3eca4 | 112 | |
a8166a52 | 113 | hw_fib = dev->hw_fib_va; |
1da177e4 | 114 | hw_fib_pa = dev->hw_fib_pa; |
a8166a52 | 115 | memset(hw_fib, 0, dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)); |
1da177e4 LT |
116 | /* |
117 | * Initialise the fibs | |
118 | */ | |
8ce3eca4 SM |
119 | for (i = 0, fibptr = &dev->fibs[i]; |
120 | i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); | |
121 | i++, fibptr++) | |
1da177e4 LT |
122 | { |
123 | fibptr->dev = dev; | |
a8166a52 MH |
124 | fibptr->hw_fib_va = hw_fib; |
125 | fibptr->data = (void *) fibptr->hw_fib_va->data; | |
1da177e4 LT |
126 | fibptr->next = fibptr+1; /* Forward chain the fibs */ |
127 | init_MUTEX_LOCKED(&fibptr->event_wait); | |
128 | spin_lock_init(&fibptr->event_lock); | |
a8166a52 MH |
129 | hw_fib->header.XferState = cpu_to_le32(0xffffffff); |
130 | hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size); | |
1da177e4 | 131 | fibptr->hw_fib_pa = hw_fib_pa; |
a8166a52 | 132 | hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + dev->max_fib_size); |
7c00ffa3 | 133 | hw_fib_pa = hw_fib_pa + dev->max_fib_size; |
1da177e4 LT |
134 | } |
135 | /* | |
136 | * Add the fib chain to the free list | |
137 | */ | |
7c00ffa3 | 138 | dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL; |
1da177e4 LT |
139 | /* |
140 | * Enable this to debug out of queue space | |
141 | */ | |
142 | dev->free_fib = &dev->fibs[0]; | |
143 | return 0; | |
144 | } | |
145 | ||
146 | /** | |
bfb35aa8 | 147 | * aac_fib_alloc - allocate a fib |
1da177e4 LT |
148 | * @dev: Adapter to allocate the fib for |
149 | * | |
150 | * Allocate a fib from the adapter fib pool. If the pool is empty we | |
7c00ffa3 | 151 | * return NULL. |
1da177e4 | 152 | */ |
8ce3eca4 | 153 | |
bfb35aa8 | 154 | struct fib *aac_fib_alloc(struct aac_dev *dev) |
1da177e4 LT |
155 | { |
156 | struct fib * fibptr; | |
157 | unsigned long flags; | |
158 | spin_lock_irqsave(&dev->fib_lock, flags); | |
8ce3eca4 | 159 | fibptr = dev->free_fib; |
7c00ffa3 MH |
160 | if(!fibptr){ |
161 | spin_unlock_irqrestore(&dev->fib_lock, flags); | |
162 | return fibptr; | |
163 | } | |
1da177e4 LT |
164 | dev->free_fib = fibptr->next; |
165 | spin_unlock_irqrestore(&dev->fib_lock, flags); | |
166 | /* | |
167 | * Set the proper node type code and node byte size | |
168 | */ | |
169 | fibptr->type = FSAFS_NTC_FIB_CONTEXT; | |
170 | fibptr->size = sizeof(struct fib); | |
171 | /* | |
172 | * Null out fields that depend on being zero at the start of | |
173 | * each I/O | |
174 | */ | |
a8166a52 | 175 | fibptr->hw_fib_va->header.XferState = 0; |
b6ef70f3 | 176 | fibptr->flags = 0; |
1da177e4 LT |
177 | fibptr->callback = NULL; |
178 | fibptr->callback_data = NULL; | |
179 | ||
180 | return fibptr; | |
181 | } | |
182 | ||
183 | /** | |
bfb35aa8 | 184 | * aac_fib_free - free a fib |
1da177e4 LT |
185 | * @fibptr: fib to free up |
186 | * | |
187 | * Frees up a fib and places it on the appropriate queue | |
1da177e4 | 188 | */ |
8ce3eca4 | 189 | |
bfb35aa8 | 190 | void aac_fib_free(struct fib *fibptr) |
1da177e4 LT |
191 | { |
192 | unsigned long flags; | |
193 | ||
194 | spin_lock_irqsave(&fibptr->dev->fib_lock, flags); | |
03d44337 | 195 | if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) |
1da177e4 | 196 | aac_config.fib_timeouts++; |
03d44337 MH |
197 | if (fibptr->hw_fib_va->header.XferState != 0) { |
198 | printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n", | |
199 | (void*)fibptr, | |
200 | le32_to_cpu(fibptr->hw_fib_va->header.XferState)); | |
201 | } | |
202 | fibptr->next = fibptr->dev->free_fib; | |
203 | fibptr->dev->free_fib = fibptr; | |
1da177e4 LT |
204 | spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags); |
205 | } | |
206 | ||
207 | /** | |
bfb35aa8 | 208 | * aac_fib_init - initialise a fib |
1da177e4 | 209 | * @fibptr: The fib to initialize |
8ce3eca4 | 210 | * |
1da177e4 LT |
211 | * Set up the generic fib fields ready for use |
212 | */ | |
8ce3eca4 | 213 | |
bfb35aa8 | 214 | void aac_fib_init(struct fib *fibptr) |
1da177e4 | 215 | { |
a8166a52 | 216 | struct hw_fib *hw_fib = fibptr->hw_fib_va; |
1da177e4 LT |
217 | |
218 | hw_fib->header.StructType = FIB_MAGIC; | |
7c00ffa3 MH |
219 | hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size); |
220 | hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable); | |
8e0c5ebd | 221 | hw_fib->header.SenderFibAddress = 0; /* Filled in later if needed */ |
1da177e4 | 222 | hw_fib->header.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa); |
7c00ffa3 | 223 | hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size); |
1da177e4 LT |
224 | } |
225 | ||
226 | /** | |
227 | * fib_deallocate - deallocate a fib | |
228 | * @fibptr: fib to deallocate | |
229 | * | |
230 | * Will deallocate and return to the free pool the FIB pointed to by the | |
231 | * caller. | |
232 | */ | |
8ce3eca4 | 233 | |
4833869e | 234 | static void fib_dealloc(struct fib * fibptr) |
1da177e4 | 235 | { |
a8166a52 | 236 | struct hw_fib *hw_fib = fibptr->hw_fib_va; |
125e1874 | 237 | BUG_ON(hw_fib->header.StructType != FIB_MAGIC); |
8ce3eca4 | 238 | hw_fib->header.XferState = 0; |
1da177e4 LT |
239 | } |
240 | ||
241 | /* | |
242 | * Commuication primitives define and support the queuing method we use to | |
243 | * support host to adapter commuication. All queue accesses happen through | |
244 | * these routines and are the only routines which have a knowledge of the | |
245 | * how these queues are implemented. | |
246 | */ | |
8ce3eca4 | 247 | |
1da177e4 LT |
248 | /** |
249 | * aac_get_entry - get a queue entry | |
250 | * @dev: Adapter | |
251 | * @qid: Queue Number | |
252 | * @entry: Entry return | |
253 | * @index: Index return | |
254 | * @nonotify: notification control | |
255 | * | |
256 | * With a priority the routine returns a queue entry if the queue has free entries. If the queue | |
257 | * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is | |
258 | * returned. | |
259 | */ | |
8ce3eca4 | 260 | |
1da177e4 LT |
261 | static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify) |
262 | { | |
263 | struct aac_queue * q; | |
bed30de4 | 264 | unsigned long idx; |
1da177e4 LT |
265 | |
266 | /* | |
267 | * All of the queues wrap when they reach the end, so we check | |
268 | * to see if they have reached the end and if they have we just | |
269 | * set the index back to zero. This is a wrap. You could or off | |
270 | * the high bits in all updates but this is a bit faster I think. | |
271 | */ | |
272 | ||
273 | q = &dev->queues->queue[qid]; | |
bed30de4 MH |
274 | |
275 | idx = *index = le32_to_cpu(*(q->headers.producer)); | |
276 | /* Interrupt Moderation, only interrupt for first two entries */ | |
277 | if (idx != le32_to_cpu(*(q->headers.consumer))) { | |
278 | if (--idx == 0) { | |
1640a2c3 | 279 | if (qid == AdapNormCmdQueue) |
bed30de4 | 280 | idx = ADAP_NORM_CMD_ENTRIES; |
1640a2c3 | 281 | else |
bed30de4 MH |
282 | idx = ADAP_NORM_RESP_ENTRIES; |
283 | } | |
284 | if (idx != le32_to_cpu(*(q->headers.consumer))) | |
8ce3eca4 | 285 | *nonotify = 1; |
bed30de4 | 286 | } |
1da177e4 | 287 | |
1640a2c3 | 288 | if (qid == AdapNormCmdQueue) { |
8ce3eca4 | 289 | if (*index >= ADAP_NORM_CMD_ENTRIES) |
1da177e4 | 290 | *index = 0; /* Wrap to front of the Producer Queue. */ |
1640a2c3 | 291 | } else { |
8ce3eca4 | 292 | if (*index >= ADAP_NORM_RESP_ENTRIES) |
1da177e4 LT |
293 | *index = 0; /* Wrap to front of the Producer Queue. */ |
294 | } | |
1da177e4 | 295 | |
8ce3eca4 SM |
296 | /* Queue is full */ |
297 | if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { | |
7c00ffa3 | 298 | printk(KERN_WARNING "Queue %d full, %u outstanding.\n", |
1da177e4 LT |
299 | qid, q->numpending); |
300 | return 0; | |
301 | } else { | |
8ce3eca4 | 302 | *entry = q->base + *index; |
1da177e4 LT |
303 | return 1; |
304 | } | |
8ce3eca4 | 305 | } |
1da177e4 LT |
306 | |
307 | /** | |
308 | * aac_queue_get - get the next free QE | |
309 | * @dev: Adapter | |
310 | * @index: Returned index | |
311 | * @priority: Priority of fib | |
312 | * @fib: Fib to associate with the queue entry | |
313 | * @wait: Wait if queue full | |
314 | * @fibptr: Driver fib object to go with fib | |
315 | * @nonotify: Don't notify the adapter | |
316 | * | |
317 | * Gets the next free QE off the requested priorty adapter command | |
318 | * queue and associates the Fib with the QE. The QE represented by | |
319 | * index is ready to insert on the queue when this routine returns | |
320 | * success. | |
321 | */ | |
322 | ||
28713324 | 323 | 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 |
324 | { |
325 | struct aac_entry * entry = NULL; | |
326 | int map = 0; | |
8ce3eca4 | 327 | |
1640a2c3 | 328 | if (qid == AdapNormCmdQueue) { |
1da177e4 | 329 | /* if no entries wait for some if caller wants to */ |
8ce3eca4 | 330 | while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { |
1da177e4 LT |
331 | printk(KERN_ERR "GetEntries failed\n"); |
332 | } | |
8ce3eca4 SM |
333 | /* |
334 | * Setup queue entry with a command, status and fib mapped | |
335 | */ | |
336 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); | |
337 | map = 1; | |
1640a2c3 | 338 | } else { |
8ce3eca4 | 339 | while (!aac_get_entry(dev, qid, &entry, index, nonotify)) { |
1da177e4 LT |
340 | /* if no entries wait for some if caller wants to */ |
341 | } | |
8ce3eca4 SM |
342 | /* |
343 | * Setup queue entry with command, status and fib mapped | |
344 | */ | |
345 | entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size)); | |
346 | entry->addr = hw_fib->header.SenderFibAddress; | |
347 | /* Restore adapters pointer to the FIB */ | |
1da177e4 | 348 | hw_fib->header.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */ |
8ce3eca4 | 349 | map = 0; |
1da177e4 LT |
350 | } |
351 | /* | |
352 | * If MapFib is true than we need to map the Fib and put pointers | |
353 | * in the queue entry. | |
354 | */ | |
355 | if (map) | |
356 | entry->addr = cpu_to_le32(fibptr->hw_fib_pa); | |
357 | return 0; | |
358 | } | |
359 | ||
1da177e4 | 360 | /* |
8ce3eca4 SM |
361 | * Define the highest level of host to adapter communication routines. |
362 | * These routines will support host to adapter FS commuication. These | |
1da177e4 LT |
363 | * routines have no knowledge of the commuication method used. This level |
364 | * sends and receives FIBs. This level has no knowledge of how these FIBs | |
365 | * get passed back and forth. | |
366 | */ | |
367 | ||
368 | /** | |
bfb35aa8 | 369 | * aac_fib_send - send a fib to the adapter |
1da177e4 LT |
370 | * @command: Command to send |
371 | * @fibptr: The fib | |
372 | * @size: Size of fib data area | |
373 | * @priority: Priority of Fib | |
374 | * @wait: Async/sync select | |
375 | * @reply: True if a reply is wanted | |
376 | * @callback: Called with reply | |
377 | * @callback_data: Passed to callback | |
378 | * | |
379 | * Sends the requested FIB to the adapter and optionally will wait for a | |
380 | * response FIB. If the caller does not wish to wait for a response than | |
381 | * an event to wait on must be supplied. This event will be set when a | |
382 | * response FIB is received from the adapter. | |
383 | */ | |
8ce3eca4 | 384 | |
bfb35aa8 MH |
385 | int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size, |
386 | int priority, int wait, int reply, fib_callback callback, | |
387 | void *callback_data) | |
1da177e4 | 388 | { |
1da177e4 | 389 | struct aac_dev * dev = fibptr->dev; |
a8166a52 | 390 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
1da177e4 | 391 | unsigned long flags = 0; |
1640a2c3 MH |
392 | unsigned long qflags; |
393 | ||
1da177e4 LT |
394 | if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned))) |
395 | return -EBUSY; | |
396 | /* | |
8ce3eca4 | 397 | * There are 5 cases with the wait and reponse requested flags. |
1da177e4 LT |
398 | * The only invalid cases are if the caller requests to wait and |
399 | * does not request a response and if the caller does not want a | |
400 | * response and the Fib is not allocated from pool. If a response | |
401 | * is not requesed the Fib will just be deallocaed by the DPC | |
402 | * routine when the response comes back from the adapter. No | |
8ce3eca4 | 403 | * further processing will be done besides deleting the Fib. We |
1da177e4 LT |
404 | * will have a debug mode where the adapter can notify the host |
405 | * it had a problem and the host can log that fact. | |
406 | */ | |
b6ef70f3 | 407 | fibptr->flags = 0; |
1da177e4 LT |
408 | if (wait && !reply) { |
409 | return -EINVAL; | |
410 | } else if (!wait && reply) { | |
411 | hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected); | |
412 | FIB_COUNTER_INCREMENT(aac_config.AsyncSent); | |
413 | } else if (!wait && !reply) { | |
414 | hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected); | |
415 | FIB_COUNTER_INCREMENT(aac_config.NoResponseSent); | |
416 | } else if (wait && reply) { | |
417 | hw_fib->header.XferState |= cpu_to_le32(ResponseExpected); | |
418 | FIB_COUNTER_INCREMENT(aac_config.NormalSent); | |
8ce3eca4 | 419 | } |
1da177e4 LT |
420 | /* |
421 | * Map the fib into 32bits by using the fib number | |
422 | */ | |
423 | ||
8e0c5ebd | 424 | hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2); |
1da177e4 LT |
425 | hw_fib->header.SenderData = (u32)(fibptr - dev->fibs); |
426 | /* | |
427 | * Set FIB state to indicate where it came from and if we want a | |
428 | * response from the adapter. Also load the command from the | |
429 | * caller. | |
430 | * | |
431 | * Map the hw fib pointer as a 32bit value | |
432 | */ | |
433 | hw_fib->header.Command = cpu_to_le16(command); | |
434 | hw_fib->header.XferState |= cpu_to_le32(SentFromHost); | |
a8166a52 | 435 | fibptr->hw_fib_va->header.Flags = 0; /* 0 the flags field - internal only*/ |
1da177e4 LT |
436 | /* |
437 | * Set the size of the Fib we want to send to the adapter | |
438 | */ | |
439 | hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size); | |
440 | if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) { | |
441 | return -EMSGSIZE; | |
8ce3eca4 | 442 | } |
1da177e4 LT |
443 | /* |
444 | * Get a queue entry connect the FIB to it and send an notify | |
445 | * the adapter a command is ready. | |
446 | */ | |
1640a2c3 | 447 | hw_fib->header.XferState |= cpu_to_le32(NormalPriority); |
1da177e4 | 448 | |
1da177e4 LT |
449 | /* |
450 | * Fill in the Callback and CallbackContext if we are not | |
451 | * going to wait. | |
452 | */ | |
453 | if (!wait) { | |
454 | fibptr->callback = callback; | |
455 | fibptr->callback_data = callback_data; | |
b6ef70f3 | 456 | fibptr->flags = FIB_CONTEXT_FLAG; |
1da177e4 | 457 | } |
1da177e4 LT |
458 | |
459 | fibptr->done = 0; | |
1da177e4 | 460 | |
1640a2c3 MH |
461 | FIB_COUNTER_INCREMENT(aac_config.FibsSent); |
462 | ||
1640a2c3 | 463 | dprintk((KERN_DEBUG "Fib contents:.\n")); |
8e0c5ebd MH |
464 | dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command))); |
465 | dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command))); | |
466 | dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState))); | |
a8166a52 | 467 | dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va)); |
1640a2c3 MH |
468 | dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa)); |
469 | dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr)); | |
470 | ||
c8f7b073 | 471 | if (!dev->queues) |
65101355 | 472 | return -EBUSY; |
1640a2c3 MH |
473 | |
474 | if(wait) | |
475 | spin_lock_irqsave(&fibptr->event_lock, flags); | |
28713324 | 476 | aac_adapter_deliver(fibptr); |
8e0c5ebd | 477 | |
1da177e4 | 478 | /* |
8ce3eca4 | 479 | * If the caller wanted us to wait for response wait now. |
1da177e4 | 480 | */ |
8ce3eca4 | 481 | |
1da177e4 LT |
482 | if (wait) { |
483 | spin_unlock_irqrestore(&fibptr->event_lock, flags); | |
9203344c MH |
484 | /* Only set for first known interruptable command */ |
485 | if (wait < 0) { | |
486 | /* | |
487 | * *VERY* Dangerous to time out a command, the | |
488 | * assumption is made that we have no hope of | |
489 | * functioning because an interrupt routing or other | |
490 | * hardware failure has occurred. | |
491 | */ | |
492 | unsigned long count = 36000000L; /* 3 minutes */ | |
9203344c | 493 | while (down_trylock(&fibptr->event_wait)) { |
33524b70 | 494 | int blink; |
9203344c | 495 | if (--count == 0) { |
28713324 | 496 | struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue]; |
9203344c MH |
497 | spin_lock_irqsave(q->lock, qflags); |
498 | q->numpending--; | |
9203344c MH |
499 | spin_unlock_irqrestore(q->lock, qflags); |
500 | if (wait == -1) { | |
bfb35aa8 | 501 | printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n" |
9203344c MH |
502 | "Usually a result of a PCI interrupt routing problem;\n" |
503 | "update mother board BIOS or consider utilizing one of\n" | |
504 | "the SAFE mode kernel options (acpi, apic etc)\n"); | |
505 | } | |
506 | return -ETIMEDOUT; | |
507 | } | |
33524b70 MH |
508 | if ((blink = aac_adapter_check_health(dev)) > 0) { |
509 | if (wait == -1) { | |
510 | printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n" | |
511 | "Usually a result of a serious unrecoverable hardware problem\n", | |
512 | blink); | |
513 | } | |
514 | return -EFAULT; | |
515 | } | |
9203344c MH |
516 | udelay(5); |
517 | } | |
33bb3b29 MH |
518 | } else |
519 | (void)down_interruptible(&fibptr->event_wait); | |
520 | spin_lock_irqsave(&fibptr->event_lock, flags); | |
521 | if (fibptr->done == 0) { | |
522 | fibptr->done = 2; /* Tell interrupt we aborted */ | |
c8f7b073 | 523 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
33bb3b29 | 524 | return -EINTR; |
c8f7b073 | 525 | } |
33bb3b29 | 526 | spin_unlock_irqrestore(&fibptr->event_lock, flags); |
125e1874 | 527 | BUG_ON(fibptr->done == 0); |
8ce3eca4 | 528 | |
912d4e88 | 529 | if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) |
1da177e4 | 530 | return -ETIMEDOUT; |
912d4e88 | 531 | return 0; |
1da177e4 LT |
532 | } |
533 | /* | |
534 | * If the user does not want a response than return success otherwise | |
535 | * return pending | |
536 | */ | |
537 | if (reply) | |
538 | return -EINPROGRESS; | |
539 | else | |
540 | return 0; | |
541 | } | |
542 | ||
8ce3eca4 | 543 | /** |
1da177e4 LT |
544 | * aac_consumer_get - get the top of the queue |
545 | * @dev: Adapter | |
546 | * @q: Queue | |
547 | * @entry: Return entry | |
548 | * | |
549 | * Will return a pointer to the entry on the top of the queue requested that | |
8ce3eca4 SM |
550 | * we are a consumer of, and return the address of the queue entry. It does |
551 | * not change the state of the queue. | |
1da177e4 LT |
552 | */ |
553 | ||
554 | int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry) | |
555 | { | |
556 | u32 index; | |
557 | int status; | |
558 | if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) { | |
559 | status = 0; | |
560 | } else { | |
561 | /* | |
562 | * The consumer index must be wrapped if we have reached | |
563 | * the end of the queue, else we just use the entry | |
564 | * pointed to by the header index | |
565 | */ | |
8ce3eca4 SM |
566 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
567 | index = 0; | |
1da177e4 | 568 | else |
8ce3eca4 | 569 | index = le32_to_cpu(*q->headers.consumer); |
1da177e4 LT |
570 | *entry = q->base + index; |
571 | status = 1; | |
572 | } | |
573 | return(status); | |
574 | } | |
575 | ||
576 | /** | |
577 | * aac_consumer_free - free consumer entry | |
578 | * @dev: Adapter | |
579 | * @q: Queue | |
580 | * @qid: Queue ident | |
581 | * | |
582 | * Frees up the current top of the queue we are a consumer of. If the | |
583 | * queue was full notify the producer that the queue is no longer full. | |
584 | */ | |
585 | ||
586 | void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid) | |
587 | { | |
588 | int wasfull = 0; | |
589 | u32 notify; | |
590 | ||
591 | if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer)) | |
592 | wasfull = 1; | |
8ce3eca4 | 593 | |
1da177e4 LT |
594 | if (le32_to_cpu(*q->headers.consumer) >= q->entries) |
595 | *q->headers.consumer = cpu_to_le32(1); | |
596 | else | |
597 | *q->headers.consumer = cpu_to_le32(le32_to_cpu(*q->headers.consumer)+1); | |
8ce3eca4 | 598 | |
1da177e4 LT |
599 | if (wasfull) { |
600 | switch (qid) { | |
601 | ||
602 | case HostNormCmdQueue: | |
603 | notify = HostNormCmdNotFull; | |
604 | break; | |
1da177e4 LT |
605 | case HostNormRespQueue: |
606 | notify = HostNormRespNotFull; | |
607 | break; | |
1da177e4 LT |
608 | default: |
609 | BUG(); | |
610 | return; | |
611 | } | |
612 | aac_adapter_notify(dev, notify); | |
613 | } | |
8ce3eca4 | 614 | } |
1da177e4 LT |
615 | |
616 | /** | |
bfb35aa8 | 617 | * aac_fib_adapter_complete - complete adapter issued fib |
1da177e4 LT |
618 | * @fibptr: fib to complete |
619 | * @size: size of fib | |
620 | * | |
621 | * Will do all necessary work to complete a FIB that was sent from | |
622 | * the adapter. | |
623 | */ | |
624 | ||
bfb35aa8 | 625 | int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size) |
1da177e4 | 626 | { |
a8166a52 | 627 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
1da177e4 | 628 | struct aac_dev * dev = fibptr->dev; |
1640a2c3 | 629 | struct aac_queue * q; |
1da177e4 | 630 | unsigned long nointr = 0; |
1640a2c3 MH |
631 | unsigned long qflags; |
632 | ||
633 | if (hw_fib->header.XferState == 0) { | |
28713324 | 634 | if (dev->comm_interface == AAC_COMM_MESSAGE) |
8e0c5ebd | 635 | kfree (hw_fib); |
8ce3eca4 | 636 | return 0; |
1640a2c3 | 637 | } |
1da177e4 LT |
638 | /* |
639 | * If we plan to do anything check the structure type first. | |
8ce3eca4 SM |
640 | */ |
641 | if (hw_fib->header.StructType != FIB_MAGIC) { | |
28713324 | 642 | if (dev->comm_interface == AAC_COMM_MESSAGE) |
8e0c5ebd | 643 | kfree (hw_fib); |
8ce3eca4 | 644 | return -EINVAL; |
1da177e4 LT |
645 | } |
646 | /* | |
647 | * This block handles the case where the adapter had sent us a | |
648 | * command and we have finished processing the command. We | |
8ce3eca4 SM |
649 | * call completeFib when we are done processing the command |
650 | * and want to send a response back to the adapter. This will | |
1da177e4 LT |
651 | * send the completed cdb to the adapter. |
652 | */ | |
653 | if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) { | |
28713324 | 654 | if (dev->comm_interface == AAC_COMM_MESSAGE) { |
8e0c5ebd MH |
655 | kfree (hw_fib); |
656 | } else { | |
8ce3eca4 SM |
657 | u32 index; |
658 | hw_fib->header.XferState |= cpu_to_le32(HostProcessed); | |
8e0c5ebd MH |
659 | if (size) { |
660 | size += sizeof(struct aac_fibhdr); | |
8ce3eca4 | 661 | if (size > le16_to_cpu(hw_fib->header.SenderSize)) |
8e0c5ebd MH |
662 | return -EMSGSIZE; |
663 | hw_fib->header.Size = cpu_to_le16(size); | |
664 | } | |
665 | q = &dev->queues->queue[AdapNormRespQueue]; | |
666 | spin_lock_irqsave(q->lock, qflags); | |
667 | aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr); | |
668 | *(q->headers.producer) = cpu_to_le32(index + 1); | |
669 | spin_unlock_irqrestore(q->lock, qflags); | |
670 | if (!(nointr & (int)aac_config.irq_mod)) | |
671 | aac_adapter_notify(dev, AdapNormRespQueue); | |
1da177e4 | 672 | } |
8ce3eca4 SM |
673 | } else { |
674 | printk(KERN_WARNING "aac_fib_adapter_complete: " | |
675 | "Unknown xferstate detected.\n"); | |
676 | BUG(); | |
1da177e4 | 677 | } |
1da177e4 LT |
678 | return 0; |
679 | } | |
680 | ||
681 | /** | |
bfb35aa8 | 682 | * aac_fib_complete - fib completion handler |
1da177e4 LT |
683 | * @fib: FIB to complete |
684 | * | |
685 | * Will do all necessary work to complete a FIB. | |
686 | */ | |
8ce3eca4 | 687 | |
bfb35aa8 | 688 | int aac_fib_complete(struct fib *fibptr) |
1da177e4 | 689 | { |
a8166a52 | 690 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
1da177e4 LT |
691 | |
692 | /* | |
693 | * Check for a fib which has already been completed | |
694 | */ | |
695 | ||
696 | if (hw_fib->header.XferState == 0) | |
8ce3eca4 | 697 | return 0; |
1da177e4 LT |
698 | /* |
699 | * If we plan to do anything check the structure type first. | |
8ce3eca4 | 700 | */ |
1da177e4 LT |
701 | |
702 | if (hw_fib->header.StructType != FIB_MAGIC) | |
8ce3eca4 | 703 | return -EINVAL; |
1da177e4 | 704 | /* |
8ce3eca4 | 705 | * This block completes a cdb which orginated on the host and we |
1da177e4 LT |
706 | * just need to deallocate the cdb or reinit it. At this point the |
707 | * command is complete that we had sent to the adapter and this | |
708 | * cdb could be reused. | |
709 | */ | |
710 | if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) && | |
711 | (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))) | |
712 | { | |
713 | fib_dealloc(fibptr); | |
714 | } | |
715 | else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost)) | |
716 | { | |
717 | /* | |
718 | * This handles the case when the host has aborted the I/O | |
719 | * to the adapter because the adapter is not responding | |
720 | */ | |
721 | fib_dealloc(fibptr); | |
722 | } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) { | |
723 | fib_dealloc(fibptr); | |
724 | } else { | |
725 | BUG(); | |
8ce3eca4 | 726 | } |
1da177e4 LT |
727 | return 0; |
728 | } | |
729 | ||
730 | /** | |
731 | * aac_printf - handle printf from firmware | |
732 | * @dev: Adapter | |
733 | * @val: Message info | |
734 | * | |
735 | * Print a message passed to us by the controller firmware on the | |
736 | * Adaptec board | |
737 | */ | |
738 | ||
739 | void aac_printf(struct aac_dev *dev, u32 val) | |
740 | { | |
1da177e4 | 741 | char *cp = dev->printfbuf; |
7c00ffa3 MH |
742 | if (dev->printf_enabled) |
743 | { | |
744 | int length = val & 0xffff; | |
745 | int level = (val >> 16) & 0xffff; | |
8ce3eca4 | 746 | |
7c00ffa3 MH |
747 | /* |
748 | * The size of the printfbuf is set in port.c | |
749 | * There is no variable or define for it | |
750 | */ | |
751 | if (length > 255) | |
752 | length = 255; | |
753 | if (cp[length] != 0) | |
754 | cp[length] = 0; | |
755 | if (level == LOG_AAC_HIGH_ERROR) | |
1241f359 | 756 | printk(KERN_WARNING "%s:%s", dev->name, cp); |
7c00ffa3 | 757 | else |
1241f359 | 758 | printk(KERN_INFO "%s:%s", dev->name, cp); |
7c00ffa3 | 759 | } |
8ce3eca4 | 760 | memset(cp, 0, 256); |
1da177e4 LT |
761 | } |
762 | ||
131256cf MH |
763 | |
764 | /** | |
765 | * aac_handle_aif - Handle a message from the firmware | |
766 | * @dev: Which adapter this fib is from | |
767 | * @fibptr: Pointer to fibptr from adapter | |
768 | * | |
769 | * This routine handles a driver notify fib from the adapter and | |
770 | * dispatches it to the appropriate routine for handling. | |
771 | */ | |
772 | ||
31876f32 | 773 | #define AIF_SNIFF_TIMEOUT (30*HZ) |
131256cf MH |
774 | static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr) |
775 | { | |
a8166a52 | 776 | struct hw_fib * hw_fib = fibptr->hw_fib_va; |
131256cf | 777 | struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data; |
0995ad38 | 778 | u32 channel, id, lun, container; |
131256cf MH |
779 | struct scsi_device *device; |
780 | enum { | |
781 | NOTHING, | |
782 | DELETE, | |
783 | ADD, | |
784 | CHANGE | |
0995ad38 | 785 | } device_config_needed = NOTHING; |
131256cf MH |
786 | |
787 | /* Sniff for container changes */ | |
788 | ||
c8f7b073 | 789 | if (!dev || !dev->fsa_dev) |
131256cf | 790 | return; |
0995ad38 | 791 | container = channel = id = lun = (u32)-1; |
131256cf MH |
792 | |
793 | /* | |
794 | * We have set this up to try and minimize the number of | |
795 | * re-configures that take place. As a result of this when | |
796 | * certain AIF's come in we will set a flag waiting for another | |
797 | * type of AIF before setting the re-config flag. | |
798 | */ | |
799 | switch (le32_to_cpu(aifcmd->command)) { | |
800 | case AifCmdDriverNotify: | |
f3307f72 | 801 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { |
131256cf MH |
802 | /* |
803 | * Morph or Expand complete | |
804 | */ | |
805 | case AifDenMorphComplete: | |
806 | case AifDenVolumeExtendComplete: | |
f3307f72 | 807 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
131256cf MH |
808 | if (container >= dev->maximum_num_containers) |
809 | break; | |
810 | ||
811 | /* | |
f64a181d | 812 | * Find the scsi_device associated with the SCSI |
131256cf MH |
813 | * address. Make sure we have the right array, and if |
814 | * so set the flag to initiate a new re-config once we | |
815 | * see an AifEnConfigChange AIF come through. | |
816 | */ | |
817 | ||
818 | if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) { | |
8ce3eca4 SM |
819 | device = scsi_device_lookup(dev->scsi_host_ptr, |
820 | CONTAINER_TO_CHANNEL(container), | |
821 | CONTAINER_TO_ID(container), | |
131256cf MH |
822 | CONTAINER_TO_LUN(container)); |
823 | if (device) { | |
824 | dev->fsa_dev[container].config_needed = CHANGE; | |
825 | dev->fsa_dev[container].config_waiting_on = AifEnConfigChange; | |
31876f32 | 826 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
131256cf MH |
827 | scsi_device_put(device); |
828 | } | |
829 | } | |
830 | } | |
831 | ||
832 | /* | |
833 | * If we are waiting on something and this happens to be | |
834 | * that thing then set the re-configure flag. | |
835 | */ | |
836 | if (container != (u32)-1) { | |
837 | if (container >= dev->maximum_num_containers) | |
838 | break; | |
31876f32 | 839 | if ((dev->fsa_dev[container].config_waiting_on == |
f3307f72 | 840 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
31876f32 | 841 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
131256cf MH |
842 | dev->fsa_dev[container].config_waiting_on = 0; |
843 | } else for (container = 0; | |
844 | container < dev->maximum_num_containers; ++container) { | |
31876f32 | 845 | if ((dev->fsa_dev[container].config_waiting_on == |
f3307f72 | 846 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
31876f32 | 847 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
131256cf MH |
848 | dev->fsa_dev[container].config_waiting_on = 0; |
849 | } | |
850 | break; | |
851 | ||
852 | case AifCmdEventNotify: | |
f3307f72 | 853 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) { |
95e852e1 SM |
854 | case AifEnBatteryEvent: |
855 | dev->cache_protected = | |
856 | (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3)); | |
857 | break; | |
131256cf MH |
858 | /* |
859 | * Add an Array. | |
860 | */ | |
861 | case AifEnAddContainer: | |
f3307f72 | 862 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
131256cf MH |
863 | if (container >= dev->maximum_num_containers) |
864 | break; | |
865 | dev->fsa_dev[container].config_needed = ADD; | |
866 | dev->fsa_dev[container].config_waiting_on = | |
867 | AifEnConfigChange; | |
31876f32 | 868 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
131256cf MH |
869 | break; |
870 | ||
871 | /* | |
872 | * Delete an Array. | |
873 | */ | |
874 | case AifEnDeleteContainer: | |
f3307f72 | 875 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
131256cf MH |
876 | if (container >= dev->maximum_num_containers) |
877 | break; | |
878 | dev->fsa_dev[container].config_needed = DELETE; | |
879 | dev->fsa_dev[container].config_waiting_on = | |
880 | AifEnConfigChange; | |
31876f32 | 881 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
131256cf MH |
882 | break; |
883 | ||
884 | /* | |
885 | * Container change detected. If we currently are not | |
886 | * waiting on something else, setup to wait on a Config Change. | |
887 | */ | |
888 | case AifEnContainerChange: | |
f3307f72 | 889 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); |
131256cf MH |
890 | if (container >= dev->maximum_num_containers) |
891 | break; | |
31876f32 MH |
892 | if (dev->fsa_dev[container].config_waiting_on && |
893 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) | |
131256cf MH |
894 | break; |
895 | dev->fsa_dev[container].config_needed = CHANGE; | |
896 | dev->fsa_dev[container].config_waiting_on = | |
897 | AifEnConfigChange; | |
31876f32 | 898 | dev->fsa_dev[container].config_waiting_stamp = jiffies; |
131256cf MH |
899 | break; |
900 | ||
901 | case AifEnConfigChange: | |
902 | break; | |
903 | ||
cb1042f2 SM |
904 | case AifEnAddJBOD: |
905 | case AifEnDeleteJBOD: | |
906 | container = le32_to_cpu(((__le32 *)aifcmd->data)[1]); | |
907 | if ((container >> 28)) | |
908 | break; | |
909 | channel = (container >> 24) & 0xF; | |
910 | if (channel >= dev->maximum_num_channels) | |
911 | break; | |
912 | id = container & 0xFFFF; | |
913 | if (id >= dev->maximum_num_physicals) | |
914 | break; | |
915 | lun = (container >> 16) & 0xFF; | |
916 | channel = aac_phys_to_logical(channel); | |
917 | device_config_needed = | |
918 | (((__le32 *)aifcmd->data)[0] == | |
919 | cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE; | |
920 | break; | |
921 | ||
0995ad38 | 922 | case AifEnEnclosureManagement: |
cb1042f2 SM |
923 | /* |
924 | * If in JBOD mode, automatic exposure of new | |
925 | * physical target to be suppressed until configured. | |
926 | */ | |
927 | if (dev->jbod) | |
928 | break; | |
0995ad38 SM |
929 | switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) { |
930 | case EM_DRIVE_INSERTION: | |
931 | case EM_DRIVE_REMOVAL: | |
932 | container = le32_to_cpu( | |
933 | ((__le32 *)aifcmd->data)[2]); | |
934 | if ((container >> 28)) | |
935 | break; | |
936 | channel = (container >> 24) & 0xF; | |
937 | if (channel >= dev->maximum_num_channels) | |
938 | break; | |
939 | id = container & 0xFFFF; | |
940 | lun = (container >> 16) & 0xFF; | |
941 | if (id >= dev->maximum_num_physicals) { | |
942 | /* legacy dev_t ? */ | |
943 | if ((0x2000 <= id) || lun || channel || | |
944 | ((channel = (id >> 7) & 0x3F) >= | |
945 | dev->maximum_num_channels)) | |
946 | break; | |
947 | lun = (id >> 4) & 7; | |
948 | id &= 0xF; | |
949 | } | |
950 | channel = aac_phys_to_logical(channel); | |
951 | device_config_needed = | |
952 | (((__le32 *)aifcmd->data)[3] | |
953 | == cpu_to_le32(EM_DRIVE_INSERTION)) ? | |
954 | ADD : DELETE; | |
955 | break; | |
956 | } | |
957 | break; | |
131256cf MH |
958 | } |
959 | ||
960 | /* | |
961 | * If we are waiting on something and this happens to be | |
962 | * that thing then set the re-configure flag. | |
963 | */ | |
964 | if (container != (u32)-1) { | |
965 | if (container >= dev->maximum_num_containers) | |
966 | break; | |
31876f32 | 967 | if ((dev->fsa_dev[container].config_waiting_on == |
f3307f72 | 968 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
31876f32 | 969 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
131256cf MH |
970 | dev->fsa_dev[container].config_waiting_on = 0; |
971 | } else for (container = 0; | |
972 | container < dev->maximum_num_containers; ++container) { | |
31876f32 | 973 | if ((dev->fsa_dev[container].config_waiting_on == |
f3307f72 | 974 | le32_to_cpu(*(__le32 *)aifcmd->data)) && |
31876f32 | 975 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) |
131256cf MH |
976 | dev->fsa_dev[container].config_waiting_on = 0; |
977 | } | |
978 | break; | |
979 | ||
980 | case AifCmdJobProgress: | |
981 | /* | |
982 | * These are job progress AIF's. When a Clear is being | |
983 | * done on a container it is initially created then hidden from | |
984 | * the OS. When the clear completes we don't get a config | |
985 | * change so we monitor the job status complete on a clear then | |
986 | * wait for a container change. | |
987 | */ | |
988 | ||
f3307f72 CH |
989 | if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && |
990 | (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] || | |
991 | ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) { | |
131256cf MH |
992 | for (container = 0; |
993 | container < dev->maximum_num_containers; | |
994 | ++container) { | |
995 | /* | |
996 | * Stomp on all config sequencing for all | |
997 | * containers? | |
998 | */ | |
999 | dev->fsa_dev[container].config_waiting_on = | |
1000 | AifEnContainerChange; | |
1001 | dev->fsa_dev[container].config_needed = ADD; | |
31876f32 MH |
1002 | dev->fsa_dev[container].config_waiting_stamp = |
1003 | jiffies; | |
131256cf MH |
1004 | } |
1005 | } | |
f3307f72 CH |
1006 | if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) && |
1007 | ((__le32 *)aifcmd->data)[6] == 0 && | |
1008 | ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) { | |
131256cf MH |
1009 | for (container = 0; |
1010 | container < dev->maximum_num_containers; | |
1011 | ++container) { | |
1012 | /* | |
1013 | * Stomp on all config sequencing for all | |
1014 | * containers? | |
1015 | */ | |
1016 | dev->fsa_dev[container].config_waiting_on = | |
1017 | AifEnContainerChange; | |
1018 | dev->fsa_dev[container].config_needed = DELETE; | |
31876f32 MH |
1019 | dev->fsa_dev[container].config_waiting_stamp = |
1020 | jiffies; | |
131256cf MH |
1021 | } |
1022 | } | |
1023 | break; | |
1024 | } | |
1025 | ||
0995ad38 | 1026 | if (device_config_needed == NOTHING) |
131256cf MH |
1027 | for (container = 0; container < dev->maximum_num_containers; |
1028 | ++container) { | |
31876f32 MH |
1029 | if ((dev->fsa_dev[container].config_waiting_on == 0) && |
1030 | (dev->fsa_dev[container].config_needed != NOTHING) && | |
1031 | time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) { | |
131256cf MH |
1032 | device_config_needed = |
1033 | dev->fsa_dev[container].config_needed; | |
1034 | dev->fsa_dev[container].config_needed = NOTHING; | |
0995ad38 SM |
1035 | channel = CONTAINER_TO_CHANNEL(container); |
1036 | id = CONTAINER_TO_ID(container); | |
1037 | lun = CONTAINER_TO_LUN(container); | |
131256cf MH |
1038 | break; |
1039 | } | |
1040 | } | |
1041 | if (device_config_needed == NOTHING) | |
1042 | return; | |
1043 | ||
1044 | /* | |
1045 | * If we decided that a re-configuration needs to be done, | |
1046 | * schedule it here on the way out the door, please close the door | |
1047 | * behind you. | |
1048 | */ | |
1049 | ||
131256cf | 1050 | /* |
f64a181d | 1051 | * Find the scsi_device associated with the SCSI address, |
131256cf MH |
1052 | * and mark it as changed, invalidating the cache. This deals |
1053 | * with changes to existing device IDs. | |
1054 | */ | |
1055 | ||
1056 | if (!dev || !dev->scsi_host_ptr) | |
1057 | return; | |
1058 | /* | |
bfb35aa8 | 1059 | * force reload of disk info via aac_probe_container |
131256cf | 1060 | */ |
0995ad38 SM |
1061 | if ((channel == CONTAINER_CHANNEL) && |
1062 | (device_config_needed != NOTHING)) { | |
1063 | if (dev->fsa_dev[container].valid == 1) | |
1064 | dev->fsa_dev[container].valid = 2; | |
bfb35aa8 | 1065 | aac_probe_container(dev, container); |
0995ad38 SM |
1066 | } |
1067 | device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun); | |
131256cf MH |
1068 | if (device) { |
1069 | switch (device_config_needed) { | |
1070 | case DELETE: | |
0995ad38 SM |
1071 | if (scsi_device_online(device)) { |
1072 | scsi_device_set_state(device, SDEV_OFFLINE); | |
1073 | sdev_printk(KERN_INFO, device, | |
1074 | "Device offlined - %s\n", | |
1075 | (channel == CONTAINER_CHANNEL) ? | |
1076 | "array deleted" : | |
1077 | "enclosure services event"); | |
1078 | } | |
1079 | break; | |
1080 | case ADD: | |
1081 | if (!scsi_device_online(device)) { | |
1082 | sdev_printk(KERN_INFO, device, | |
1083 | "Device online - %s\n", | |
1084 | (channel == CONTAINER_CHANNEL) ? | |
1085 | "array created" : | |
1086 | "enclosure services event"); | |
1087 | scsi_device_set_state(device, SDEV_RUNNING); | |
1088 | } | |
1089 | /* FALLTHRU */ | |
131256cf | 1090 | case CHANGE: |
0995ad38 SM |
1091 | if ((channel == CONTAINER_CHANNEL) |
1092 | && (!dev->fsa_dev[container].valid)) { | |
1093 | if (!scsi_device_online(device)) | |
1094 | break; | |
1095 | scsi_device_set_state(device, SDEV_OFFLINE); | |
1096 | sdev_printk(KERN_INFO, device, | |
1097 | "Device offlined - %s\n", | |
1098 | "array failed"); | |
1099 | break; | |
1100 | } | |
131256cf MH |
1101 | scsi_rescan_device(&device->sdev_gendev); |
1102 | ||
1103 | default: | |
1104 | break; | |
1105 | } | |
1106 | scsi_device_put(device); | |
0995ad38 | 1107 | device_config_needed = NOTHING; |
131256cf | 1108 | } |
0995ad38 SM |
1109 | if (device_config_needed == ADD) |
1110 | scsi_add_device(dev->scsi_host_ptr, channel, id, lun); | |
131256cf MH |
1111 | } |
1112 | ||
29c97684 | 1113 | static int _aac_reset_adapter(struct aac_dev *aac, int forced) |
8c867b25 MH |
1114 | { |
1115 | int index, quirks; | |
8c867b25 MH |
1116 | int retval; |
1117 | struct Scsi_Host *host; | |
1118 | struct scsi_device *dev; | |
1119 | struct scsi_cmnd *command; | |
1120 | struct scsi_cmnd *command_list; | |
29c97684 | 1121 | int jafo = 0; |
8c867b25 MH |
1122 | |
1123 | /* | |
1124 | * Assumptions: | |
29c97684 SM |
1125 | * - host is locked, unless called by the aacraid thread. |
1126 | * (a matter of convenience, due to legacy issues surrounding | |
1127 | * eh_host_adapter_reset). | |
8c867b25 MH |
1128 | * - in_reset is asserted, so no new i/o is getting to the |
1129 | * card. | |
29c97684 SM |
1130 | * - The card is dead, or will be very shortly ;-/ so no new |
1131 | * commands are completing in the interrupt service. | |
8c867b25 MH |
1132 | */ |
1133 | host = aac->scsi_host_ptr; | |
1134 | scsi_block_requests(host); | |
1135 | aac_adapter_disable_int(aac); | |
29c97684 SM |
1136 | if (aac->thread->pid != current->pid) { |
1137 | spin_unlock_irq(host->host_lock); | |
1138 | kthread_stop(aac->thread); | |
1139 | jafo = 1; | |
1140 | } | |
8c867b25 MH |
1141 | |
1142 | /* | |
1143 | * If a positive health, means in a known DEAD PANIC | |
1144 | * state and the adapter could be reset to `try again'. | |
1145 | */ | |
29c97684 | 1146 | retval = aac_adapter_restart(aac, forced ? 0 : aac_adapter_check_health(aac)); |
8c867b25 MH |
1147 | |
1148 | if (retval) | |
1149 | goto out; | |
8c867b25 | 1150 | |
d18b448f MH |
1151 | /* |
1152 | * Loop through the fibs, close the synchronous FIBS | |
1153 | */ | |
33bb3b29 | 1154 | for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) { |
d18b448f | 1155 | struct fib *fib = &aac->fibs[index]; |
a8166a52 MH |
1156 | if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) && |
1157 | (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) { | |
d18b448f MH |
1158 | unsigned long flagv; |
1159 | spin_lock_irqsave(&fib->event_lock, flagv); | |
1160 | up(&fib->event_wait); | |
1161 | spin_unlock_irqrestore(&fib->event_lock, flagv); | |
1162 | schedule(); | |
33bb3b29 | 1163 | retval = 0; |
d18b448f MH |
1164 | } |
1165 | } | |
33bb3b29 MH |
1166 | /* Give some extra time for ioctls to complete. */ |
1167 | if (retval == 0) | |
1168 | ssleep(2); | |
8c867b25 MH |
1169 | index = aac->cardtype; |
1170 | ||
1171 | /* | |
1172 | * Re-initialize the adapter, first free resources, then carefully | |
1173 | * apply the initialization sequence to come back again. Only risk | |
1174 | * is a change in Firmware dropping cache, it is assumed the caller | |
1175 | * will ensure that i/o is queisced and the card is flushed in that | |
1176 | * case. | |
1177 | */ | |
1178 | aac_fib_map_free(aac); | |
8c867b25 MH |
1179 | pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys); |
1180 | aac->comm_addr = NULL; | |
1181 | aac->comm_phys = 0; | |
1182 | kfree(aac->queues); | |
1183 | aac->queues = NULL; | |
1184 | free_irq(aac->pdev->irq, aac); | |
1185 | kfree(aac->fsa_dev); | |
1186 | aac->fsa_dev = NULL; | |
94cf6ba1 SM |
1187 | quirks = aac_get_driver_ident(index)->quirks; |
1188 | if (quirks & AAC_QUIRK_31BIT) { | |
9ad5204d SM |
1189 | if (((retval = pci_set_dma_mask(aac->pdev, DMA_31BIT_MASK))) || |
1190 | ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_31BIT_MASK)))) | |
8c867b25 MH |
1191 | goto out; |
1192 | } else { | |
9ad5204d SM |
1193 | if (((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK))) || |
1194 | ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_32BIT_MASK)))) | |
8c867b25 MH |
1195 | goto out; |
1196 | } | |
1197 | if ((retval = (*(aac_get_driver_ident(index)->init))(aac))) | |
1198 | goto out; | |
94cf6ba1 | 1199 | if (quirks & AAC_QUIRK_31BIT) |
8c867b25 MH |
1200 | if ((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK))) |
1201 | goto out; | |
29c97684 SM |
1202 | if (jafo) { |
1203 | aac->thread = kthread_run(aac_command_thread, aac, aac->name); | |
1204 | if (IS_ERR(aac->thread)) { | |
1205 | retval = PTR_ERR(aac->thread); | |
1206 | goto out; | |
1207 | } | |
8c867b25 MH |
1208 | } |
1209 | (void)aac_get_adapter_info(aac); | |
8c867b25 | 1210 | if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) { |
8ce3eca4 SM |
1211 | host->sg_tablesize = 34; |
1212 | host->max_sectors = (host->sg_tablesize * 8) + 112; | |
1213 | } | |
1214 | if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) { | |
1215 | host->sg_tablesize = 17; | |
1216 | host->max_sectors = (host->sg_tablesize * 8) + 112; | |
1217 | } | |
8c867b25 MH |
1218 | aac_get_config_status(aac, 1); |
1219 | aac_get_containers(aac); | |
1220 | /* | |
1221 | * This is where the assumption that the Adapter is quiesced | |
1222 | * is important. | |
1223 | */ | |
1224 | command_list = NULL; | |
1225 | __shost_for_each_device(dev, host) { | |
1226 | unsigned long flags; | |
1227 | spin_lock_irqsave(&dev->list_lock, flags); | |
1228 | list_for_each_entry(command, &dev->cmd_list, list) | |
1229 | if (command->SCp.phase == AAC_OWNER_FIRMWARE) { | |
1230 | command->SCp.buffer = (struct scatterlist *)command_list; | |
1231 | command_list = command; | |
1232 | } | |
1233 | spin_unlock_irqrestore(&dev->list_lock, flags); | |
1234 | } | |
1235 | while ((command = command_list)) { | |
1236 | command_list = (struct scsi_cmnd *)command->SCp.buffer; | |
1237 | command->SCp.buffer = NULL; | |
1238 | command->result = DID_OK << 16 | |
1239 | | COMMAND_COMPLETE << 8 | |
1240 | | SAM_STAT_TASK_SET_FULL; | |
1241 | command->SCp.phase = AAC_OWNER_ERROR_HANDLER; | |
1242 | command->scsi_done(command); | |
1243 | } | |
1244 | retval = 0; | |
1245 | ||
1246 | out: | |
1247 | aac->in_reset = 0; | |
1248 | scsi_unblock_requests(host); | |
29c97684 SM |
1249 | if (jafo) { |
1250 | spin_lock_irq(host->host_lock); | |
1251 | } | |
1252 | return retval; | |
1253 | } | |
1254 | ||
1255 | int aac_reset_adapter(struct aac_dev * aac, int forced) | |
1256 | { | |
1257 | unsigned long flagv = 0; | |
1258 | int retval; | |
1259 | struct Scsi_Host * host; | |
1260 | ||
1261 | if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) | |
1262 | return -EBUSY; | |
1263 | ||
1264 | if (aac->in_reset) { | |
1265 | spin_unlock_irqrestore(&aac->fib_lock, flagv); | |
1266 | return -EBUSY; | |
1267 | } | |
1268 | aac->in_reset = 1; | |
1269 | spin_unlock_irqrestore(&aac->fib_lock, flagv); | |
1270 | ||
1271 | /* | |
1272 | * Wait for all commands to complete to this specific | |
1273 | * target (block maximum 60 seconds). Although not necessary, | |
1274 | * it does make us a good storage citizen. | |
1275 | */ | |
1276 | host = aac->scsi_host_ptr; | |
1277 | scsi_block_requests(host); | |
1278 | if (forced < 2) for (retval = 60; retval; --retval) { | |
1279 | struct scsi_device * dev; | |
1280 | struct scsi_cmnd * command; | |
1281 | int active = 0; | |
1282 | ||
1283 | __shost_for_each_device(dev, host) { | |
1284 | spin_lock_irqsave(&dev->list_lock, flagv); | |
1285 | list_for_each_entry(command, &dev->cmd_list, list) { | |
1286 | if (command->SCp.phase == AAC_OWNER_FIRMWARE) { | |
1287 | active++; | |
1288 | break; | |
1289 | } | |
1290 | } | |
1291 | spin_unlock_irqrestore(&dev->list_lock, flagv); | |
1292 | if (active) | |
1293 | break; | |
1294 | ||
1295 | } | |
1296 | /* | |
1297 | * We can exit If all the commands are complete | |
1298 | */ | |
1299 | if (active == 0) | |
1300 | break; | |
1301 | ssleep(1); | |
1302 | } | |
1303 | ||
1304 | /* Quiesce build, flush cache, write through mode */ | |
f858317d SM |
1305 | if (forced < 2) |
1306 | aac_send_shutdown(aac); | |
29c97684 | 1307 | spin_lock_irqsave(host->host_lock, flagv); |
f858317d | 1308 | retval = _aac_reset_adapter(aac, forced ? forced : ((aac_check_reset != 0) && (aac_check_reset != 1))); |
29c97684 SM |
1309 | spin_unlock_irqrestore(host->host_lock, flagv); |
1310 | ||
f858317d | 1311 | if ((forced < 2) && (retval == -ENODEV)) { |
29c97684 SM |
1312 | /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */ |
1313 | struct fib * fibctx = aac_fib_alloc(aac); | |
1314 | if (fibctx) { | |
1315 | struct aac_pause *cmd; | |
1316 | int status; | |
1317 | ||
1318 | aac_fib_init(fibctx); | |
1319 | ||
1320 | cmd = (struct aac_pause *) fib_data(fibctx); | |
1321 | ||
1322 | cmd->command = cpu_to_le32(VM_ContainerConfig); | |
1323 | cmd->type = cpu_to_le32(CT_PAUSE_IO); | |
1324 | cmd->timeout = cpu_to_le32(1); | |
1325 | cmd->min = cpu_to_le32(1); | |
1326 | cmd->noRescan = cpu_to_le32(1); | |
1327 | cmd->count = cpu_to_le32(0); | |
1328 | ||
1329 | status = aac_fib_send(ContainerCommand, | |
1330 | fibctx, | |
1331 | sizeof(struct aac_pause), | |
1332 | FsaNormal, | |
1333 | -2 /* Timeout silently */, 1, | |
1334 | NULL, NULL); | |
1335 | ||
1336 | if (status >= 0) | |
1337 | aac_fib_complete(fibctx); | |
1338 | aac_fib_free(fibctx); | |
1339 | } | |
1340 | } | |
1341 | ||
8c867b25 MH |
1342 | return retval; |
1343 | } | |
1344 | ||
1345 | int aac_check_health(struct aac_dev * aac) | |
1346 | { | |
1347 | int BlinkLED; | |
1348 | unsigned long time_now, flagv = 0; | |
1349 | struct list_head * entry; | |
1350 | struct Scsi_Host * host; | |
1351 | ||
1352 | /* Extending the scope of fib_lock slightly to protect aac->in_reset */ | |
1353 | if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0) | |
1354 | return 0; | |
1355 | ||
1356 | if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) { | |
1357 | spin_unlock_irqrestore(&aac->fib_lock, flagv); | |
1358 | return 0; /* OK */ | |
1359 | } | |
1360 | ||
1361 | aac->in_reset = 1; | |
1362 | ||
1363 | /* Fake up an AIF: | |
1364 | * aac_aifcmd.command = AifCmdEventNotify = 1 | |
1365 | * aac_aifcmd.seqnum = 0xFFFFFFFF | |
1366 | * aac_aifcmd.data[0] = AifEnExpEvent = 23 | |
1367 | * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3 | |
1368 | * aac.aifcmd.data[2] = AifHighPriority = 3 | |
1369 | * aac.aifcmd.data[3] = BlinkLED | |
1370 | */ | |
1371 | ||
1372 | time_now = jiffies/HZ; | |
1373 | entry = aac->fib_list.next; | |
1374 | ||
1375 | /* | |
1376 | * For each Context that is on the | |
1377 | * fibctxList, make a copy of the | |
1378 | * fib, and then set the event to wake up the | |
1379 | * thread that is waiting for it. | |
1380 | */ | |
1381 | while (entry != &aac->fib_list) { | |
1382 | /* | |
1383 | * Extract the fibctx | |
1384 | */ | |
1385 | struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next); | |
1386 | struct hw_fib * hw_fib; | |
1387 | struct fib * fib; | |
1388 | /* | |
1389 | * Check if the queue is getting | |
1390 | * backlogged | |
1391 | */ | |
1392 | if (fibctx->count > 20) { | |
1393 | /* | |
1394 | * It's *not* jiffies folks, | |
1395 | * but jiffies / HZ, so do not | |
1396 | * panic ... | |
1397 | */ | |
1398 | u32 time_last = fibctx->jiffies; | |
1399 | /* | |
1400 | * Has it been > 2 minutes | |
1401 | * since the last read off | |
1402 | * the queue? | |
1403 | */ | |
1404 | if ((time_now - time_last) > aif_timeout) { | |
1405 | entry = entry->next; | |
1406 | aac_close_fib_context(aac, fibctx); | |
1407 | continue; | |
1408 | } | |
1409 | } | |
1410 | /* | |
1411 | * Warning: no sleep allowed while | |
1412 | * holding spinlock | |
1413 | */ | |
4dbc22d7 SM |
1414 | hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC); |
1415 | fib = kzalloc(sizeof(struct fib), GFP_ATOMIC); | |
8c867b25 MH |
1416 | if (fib && hw_fib) { |
1417 | struct aac_aifcmd * aif; | |
1418 | ||
a8166a52 | 1419 | fib->hw_fib_va = hw_fib; |
8c867b25 MH |
1420 | fib->dev = aac; |
1421 | aac_fib_init(fib); | |
1422 | fib->type = FSAFS_NTC_FIB_CONTEXT; | |
1423 | fib->size = sizeof (struct fib); | |
1424 | fib->data = hw_fib->data; | |
1425 | aif = (struct aac_aifcmd *)hw_fib->data; | |
1426 | aif->command = cpu_to_le32(AifCmdEventNotify); | |
a3940da5 SM |
1427 | aif->seqnum = cpu_to_le32(0xFFFFFFFF); |
1428 | ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent); | |
1429 | ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic); | |
1430 | ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority); | |
1431 | ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED); | |
8c867b25 MH |
1432 | |
1433 | /* | |
1434 | * Put the FIB onto the | |
1435 | * fibctx's fibs | |
1436 | */ | |
1437 | list_add_tail(&fib->fiblink, &fibctx->fib_list); | |
1438 | fibctx->count++; | |
1439 | /* | |
1440 | * Set the event to wake up the | |
1441 | * thread that will waiting. | |
1442 | */ | |
1443 | up(&fibctx->wait_sem); | |
1444 | } else { | |
1445 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); | |
1446 | kfree(fib); | |
1447 | kfree(hw_fib); | |
1448 | } | |
1449 | entry = entry->next; | |
1450 | } | |
1451 | ||
1452 | spin_unlock_irqrestore(&aac->fib_lock, flagv); | |
1453 | ||
1454 | if (BlinkLED < 0) { | |
1455 | printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED); | |
1456 | goto out; | |
1457 | } | |
1458 | ||
1459 | printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED); | |
1460 | ||
a3940da5 SM |
1461 | if (!aac_check_reset || ((aac_check_reset != 1) && |
1462 | (aac->supplement_adapter_info.SupportedOptions2 & | |
1463 | AAC_OPTION_IGNORE_RESET))) | |
29c97684 | 1464 | goto out; |
8c867b25 | 1465 | host = aac->scsi_host_ptr; |
29c97684 SM |
1466 | if (aac->thread->pid != current->pid) |
1467 | spin_lock_irqsave(host->host_lock, flagv); | |
f858317d | 1468 | BlinkLED = _aac_reset_adapter(aac, aac_check_reset != 1); |
29c97684 SM |
1469 | if (aac->thread->pid != current->pid) |
1470 | spin_unlock_irqrestore(host->host_lock, flagv); | |
8c867b25 MH |
1471 | return BlinkLED; |
1472 | ||
1473 | out: | |
1474 | aac->in_reset = 0; | |
1475 | return BlinkLED; | |
1476 | } | |
1477 | ||
1478 | ||
1da177e4 LT |
1479 | /** |
1480 | * aac_command_thread - command processing thread | |
1481 | * @dev: Adapter to monitor | |
1482 | * | |
1483 | * Waits on the commandready event in it's queue. When the event gets set | |
1484 | * it will pull FIBs off it's queue. It will continue to pull FIBs off | |
1485 | * until the queue is empty. When the queue is empty it will wait for | |
1486 | * more FIBs. | |
1487 | */ | |
8ce3eca4 | 1488 | |
fe27381d | 1489 | int aac_command_thread(void *data) |
1da177e4 | 1490 | { |
fe27381d | 1491 | struct aac_dev *dev = data; |
1da177e4 LT |
1492 | struct hw_fib *hw_fib, *hw_newfib; |
1493 | struct fib *fib, *newfib; | |
1da177e4 LT |
1494 | struct aac_fib_context *fibctx; |
1495 | unsigned long flags; | |
1496 | DECLARE_WAITQUEUE(wait, current); | |
29c97684 SM |
1497 | unsigned long next_jiffies = jiffies + HZ; |
1498 | unsigned long next_check_jiffies = next_jiffies; | |
1499 | long difference = HZ; | |
1da177e4 LT |
1500 | |
1501 | /* | |
1502 | * We can only have one thread per adapter for AIF's. | |
1503 | */ | |
1504 | if (dev->aif_thread) | |
1505 | return -EINVAL; | |
fe27381d | 1506 | |
1da177e4 LT |
1507 | /* |
1508 | * Let the DPC know it has a place to send the AIF's to. | |
1509 | */ | |
1510 | dev->aif_thread = 1; | |
2f130980 | 1511 | add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); |
1da177e4 | 1512 | set_current_state(TASK_INTERRUPTIBLE); |
2f130980 | 1513 | dprintk ((KERN_INFO "aac_command_thread start\n")); |
8ce3eca4 | 1514 | while (1) { |
2f130980 MH |
1515 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
1516 | while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) { | |
1da177e4 LT |
1517 | struct list_head *entry; |
1518 | struct aac_aifcmd * aifcmd; | |
1519 | ||
1520 | set_current_state(TASK_RUNNING); | |
8ce3eca4 | 1521 | |
2f130980 | 1522 | entry = dev->queues->queue[HostNormCmdQueue].cmdq.next; |
1da177e4 | 1523 | list_del(entry); |
8ce3eca4 | 1524 | |
2f130980 | 1525 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
1da177e4 LT |
1526 | fib = list_entry(entry, struct fib, fiblink); |
1527 | /* | |
8ce3eca4 SM |
1528 | * We will process the FIB here or pass it to a |
1529 | * worker thread that is TBD. We Really can't | |
1da177e4 LT |
1530 | * do anything at this point since we don't have |
1531 | * anything defined for this thread to do. | |
1532 | */ | |
a8166a52 | 1533 | hw_fib = fib->hw_fib_va; |
1da177e4 LT |
1534 | memset(fib, 0, sizeof(struct fib)); |
1535 | fib->type = FSAFS_NTC_FIB_CONTEXT; | |
8ce3eca4 | 1536 | fib->size = sizeof(struct fib); |
a8166a52 | 1537 | fib->hw_fib_va = hw_fib; |
1da177e4 LT |
1538 | fib->data = hw_fib->data; |
1539 | fib->dev = dev; | |
1540 | /* | |
1541 | * We only handle AifRequest fibs from the adapter. | |
1542 | */ | |
1543 | aifcmd = (struct aac_aifcmd *) hw_fib->data; | |
1544 | if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) { | |
1545 | /* Handle Driver Notify Events */ | |
131256cf | 1546 | aac_handle_aif(dev, fib); |
56b58712 | 1547 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
bfb35aa8 | 1548 | aac_fib_adapter_complete(fib, (u16)sizeof(u32)); |
1da177e4 | 1549 | } else { |
1da177e4 LT |
1550 | /* The u32 here is important and intended. We are using |
1551 | 32bit wrapping time to fit the adapter field */ | |
8ce3eca4 | 1552 | |
1da177e4 LT |
1553 | u32 time_now, time_last; |
1554 | unsigned long flagv; | |
2f130980 MH |
1555 | unsigned num; |
1556 | struct hw_fib ** hw_fib_pool, ** hw_fib_p; | |
1557 | struct fib ** fib_pool, ** fib_p; | |
8ce3eca4 | 1558 | |
131256cf | 1559 | /* Sniff events */ |
8ce3eca4 | 1560 | if ((aifcmd->command == |
131256cf | 1561 | cpu_to_le32(AifCmdEventNotify)) || |
8ce3eca4 | 1562 | (aifcmd->command == |
131256cf MH |
1563 | cpu_to_le32(AifCmdJobProgress))) { |
1564 | aac_handle_aif(dev, fib); | |
1565 | } | |
29c97684 | 1566 | |
1da177e4 LT |
1567 | time_now = jiffies/HZ; |
1568 | ||
2f130980 MH |
1569 | /* |
1570 | * Warning: no sleep allowed while | |
1571 | * holding spinlock. We take the estimate | |
1572 | * and pre-allocate a set of fibs outside the | |
1573 | * lock. | |
1574 | */ | |
1575 | num = le32_to_cpu(dev->init->AdapterFibsSize) | |
1576 | / sizeof(struct hw_fib); /* some extra */ | |
1577 | spin_lock_irqsave(&dev->fib_lock, flagv); | |
1578 | entry = dev->fib_list.next; | |
1579 | while (entry != &dev->fib_list) { | |
1580 | entry = entry->next; | |
1581 | ++num; | |
1582 | } | |
1583 | spin_unlock_irqrestore(&dev->fib_lock, flagv); | |
1584 | hw_fib_pool = NULL; | |
1585 | fib_pool = NULL; | |
1586 | if (num | |
1587 | && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL))) | |
1588 | && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) { | |
1589 | hw_fib_p = hw_fib_pool; | |
1590 | fib_p = fib_pool; | |
1591 | while (hw_fib_p < &hw_fib_pool[num]) { | |
1592 | if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) { | |
1593 | --hw_fib_p; | |
1594 | break; | |
1595 | } | |
1596 | if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) { | |
1597 | kfree(*(--hw_fib_p)); | |
1598 | break; | |
1599 | } | |
1600 | } | |
1601 | if ((num = hw_fib_p - hw_fib_pool) == 0) { | |
1602 | kfree(fib_pool); | |
1603 | fib_pool = NULL; | |
1604 | kfree(hw_fib_pool); | |
1605 | hw_fib_pool = NULL; | |
1606 | } | |
c9475cb0 | 1607 | } else { |
2f130980 MH |
1608 | kfree(hw_fib_pool); |
1609 | hw_fib_pool = NULL; | |
1610 | } | |
1da177e4 LT |
1611 | spin_lock_irqsave(&dev->fib_lock, flagv); |
1612 | entry = dev->fib_list.next; | |
1613 | /* | |
8ce3eca4 | 1614 | * For each Context that is on the |
1da177e4 LT |
1615 | * fibctxList, make a copy of the |
1616 | * fib, and then set the event to wake up the | |
1617 | * thread that is waiting for it. | |
1618 | */ | |
2f130980 MH |
1619 | hw_fib_p = hw_fib_pool; |
1620 | fib_p = fib_pool; | |
1da177e4 LT |
1621 | while (entry != &dev->fib_list) { |
1622 | /* | |
1623 | * Extract the fibctx | |
1624 | */ | |
1625 | fibctx = list_entry(entry, struct aac_fib_context, next); | |
1626 | /* | |
1627 | * Check if the queue is getting | |
1628 | * backlogged | |
1629 | */ | |
1630 | if (fibctx->count > 20) | |
1631 | { | |
1632 | /* | |
1633 | * It's *not* jiffies folks, | |
1634 | * but jiffies / HZ so do not | |
1635 | * panic ... | |
1636 | */ | |
1637 | time_last = fibctx->jiffies; | |
1638 | /* | |
8ce3eca4 | 1639 | * Has it been > 2 minutes |
1da177e4 LT |
1640 | * since the last read off |
1641 | * the queue? | |
1642 | */ | |
404d9a90 | 1643 | if ((time_now - time_last) > aif_timeout) { |
1da177e4 LT |
1644 | entry = entry->next; |
1645 | aac_close_fib_context(dev, fibctx); | |
1646 | continue; | |
1647 | } | |
1648 | } | |
1649 | /* | |
1650 | * Warning: no sleep allowed while | |
1651 | * holding spinlock | |
1652 | */ | |
2f130980 MH |
1653 | if (hw_fib_p < &hw_fib_pool[num]) { |
1654 | hw_newfib = *hw_fib_p; | |
1655 | *(hw_fib_p++) = NULL; | |
1656 | newfib = *fib_p; | |
1657 | *(fib_p++) = NULL; | |
1da177e4 LT |
1658 | /* |
1659 | * Make the copy of the FIB | |
1660 | */ | |
1661 | memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib)); | |
1662 | memcpy(newfib, fib, sizeof(struct fib)); | |
a8166a52 | 1663 | newfib->hw_fib_va = hw_newfib; |
1da177e4 LT |
1664 | /* |
1665 | * Put the FIB onto the | |
1666 | * fibctx's fibs | |
1667 | */ | |
1668 | list_add_tail(&newfib->fiblink, &fibctx->fib_list); | |
1669 | fibctx->count++; | |
8ce3eca4 | 1670 | /* |
1da177e4 | 1671 | * Set the event to wake up the |
2f130980 | 1672 | * thread that is waiting. |
1da177e4 LT |
1673 | */ |
1674 | up(&fibctx->wait_sem); | |
1675 | } else { | |
1676 | printk(KERN_WARNING "aifd: didn't allocate NewFib.\n"); | |
1da177e4 LT |
1677 | } |
1678 | entry = entry->next; | |
1679 | } | |
1680 | /* | |
1681 | * Set the status of this FIB | |
1682 | */ | |
56b58712 | 1683 | *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK); |
bfb35aa8 | 1684 | aac_fib_adapter_complete(fib, sizeof(u32)); |
1da177e4 | 1685 | spin_unlock_irqrestore(&dev->fib_lock, flagv); |
2f130980 MH |
1686 | /* Free up the remaining resources */ |
1687 | hw_fib_p = hw_fib_pool; | |
1688 | fib_p = fib_pool; | |
1689 | while (hw_fib_p < &hw_fib_pool[num]) { | |
c9475cb0 JJ |
1690 | kfree(*hw_fib_p); |
1691 | kfree(*fib_p); | |
2f130980 MH |
1692 | ++fib_p; |
1693 | ++hw_fib_p; | |
1694 | } | |
c9475cb0 JJ |
1695 | kfree(hw_fib_pool); |
1696 | kfree(fib_pool); | |
1da177e4 | 1697 | } |
1da177e4 | 1698 | kfree(fib); |
2f130980 | 1699 | spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags); |
1da177e4 LT |
1700 | } |
1701 | /* | |
1702 | * There are no more AIF's | |
1703 | */ | |
2f130980 | 1704 | spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags); |
29c97684 SM |
1705 | |
1706 | /* | |
1707 | * Background activity | |
1708 | */ | |
1709 | if ((time_before(next_check_jiffies,next_jiffies)) | |
1710 | && ((difference = next_check_jiffies - jiffies) <= 0)) { | |
1711 | next_check_jiffies = next_jiffies; | |
1712 | if (aac_check_health(dev) == 0) { | |
1713 | difference = ((long)(unsigned)check_interval) | |
1714 | * HZ; | |
1715 | next_check_jiffies = jiffies + difference; | |
1716 | } else if (!dev->queues) | |
1717 | break; | |
1718 | } | |
1719 | if (!time_before(next_check_jiffies,next_jiffies) | |
1720 | && ((difference = next_jiffies - jiffies) <= 0)) { | |
1721 | struct timeval now; | |
1722 | int ret; | |
1723 | ||
1724 | /* Don't even try to talk to adapter if its sick */ | |
1725 | ret = aac_check_health(dev); | |
1726 | if (!ret && !dev->queues) | |
1727 | break; | |
1728 | next_check_jiffies = jiffies | |
1729 | + ((long)(unsigned)check_interval) | |
1730 | * HZ; | |
1731 | do_gettimeofday(&now); | |
1732 | ||
1733 | /* Synchronize our watches */ | |
1734 | if (((1000000 - (1000000 / HZ)) > now.tv_usec) | |
1735 | && (now.tv_usec > (1000000 / HZ))) | |
1736 | difference = (((1000000 - now.tv_usec) * HZ) | |
1737 | + 500000) / 1000000; | |
1738 | else if (ret == 0) { | |
1739 | struct fib *fibptr; | |
1740 | ||
1741 | if ((fibptr = aac_fib_alloc(dev))) { | |
f3307f72 | 1742 | __le32 *info; |
29c97684 SM |
1743 | |
1744 | aac_fib_init(fibptr); | |
1745 | ||
f3307f72 | 1746 | info = (__le32 *) fib_data(fibptr); |
29c97684 SM |
1747 | if (now.tv_usec > 500000) |
1748 | ++now.tv_sec; | |
1749 | ||
1750 | *info = cpu_to_le32(now.tv_sec); | |
1751 | ||
1752 | (void)aac_fib_send(SendHostTime, | |
1753 | fibptr, | |
1754 | sizeof(*info), | |
1755 | FsaNormal, | |
1756 | 1, 1, | |
1757 | NULL, | |
1758 | NULL); | |
1759 | aac_fib_complete(fibptr); | |
1760 | aac_fib_free(fibptr); | |
1761 | } | |
1762 | difference = (long)(unsigned)update_interval*HZ; | |
1763 | } else { | |
1764 | /* retry shortly */ | |
1765 | difference = 10 * HZ; | |
1766 | } | |
1767 | next_jiffies = jiffies + difference; | |
1768 | if (time_before(next_check_jiffies,next_jiffies)) | |
1769 | difference = next_check_jiffies - jiffies; | |
1770 | } | |
1771 | if (difference <= 0) | |
1772 | difference = 1; | |
1773 | set_current_state(TASK_INTERRUPTIBLE); | |
1774 | schedule_timeout(difference); | |
1da177e4 | 1775 | |
fe27381d | 1776 | if (kthread_should_stop()) |
1da177e4 | 1777 | break; |
1da177e4 | 1778 | } |
2f130980 MH |
1779 | if (dev->queues) |
1780 | remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait); | |
1da177e4 | 1781 | dev->aif_thread = 0; |
2f130980 | 1782 | return 0; |
1da177e4 | 1783 | } |