2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc.
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
8 * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
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)
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.
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.
27 * Abstract: Contain all routines that are required for FSA host/adapter
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>
41 #include <linux/delay.h>
42 #include <linux/kthread.h>
43 #include <linux/interrupt.h>
44 #include <linux/semaphore.h>
45 #include <scsi/scsi.h>
46 #include <scsi/scsi_host.h>
47 #include <scsi/scsi_device.h>
48 #include <scsi/scsi_cmnd.h>
53 * fib_map_alloc - allocate the fib objects
54 * @dev: Adapter to allocate for
56 * Allocate and map the shared PCI space for the FIB blocks used to
57 * talk to the Adaptec firmware.
60 static int fib_map_alloc(struct aac_dev
*dev
)
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
)
74 * aac_fib_map_free - free the fib objects
75 * @dev: Adapter to free
77 * Free the PCI mappings and the memory allocated for FIB blocks
81 void aac_fib_map_free(struct aac_dev
*dev
)
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
;
91 * aac_fib_setup - setup the fibs
92 * @dev: Adapter to set up
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
98 int aac_fib_setup(struct aac_dev
* dev
)
101 struct hw_fib
*hw_fib
;
102 dma_addr_t hw_fib_pa
;
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
;
113 hw_fib
= dev
->hw_fib_va
;
114 hw_fib_pa
= dev
->hw_fib_pa
;
115 memset(hw_fib
, 0, dev
->max_fib_size
* (dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
));
117 * Initialise the fibs
119 for (i
= 0, fibptr
= &dev
->fibs
[i
];
120 i
< (dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
);
124 fibptr
->hw_fib_va
= hw_fib
;
125 fibptr
->data
= (void *) fibptr
->hw_fib_va
->data
;
126 fibptr
->next
= fibptr
+1; /* Forward chain the fibs */
127 init_MUTEX_LOCKED(&fibptr
->event_wait
);
128 spin_lock_init(&fibptr
->event_lock
);
129 hw_fib
->header
.XferState
= cpu_to_le32(0xffffffff);
130 hw_fib
->header
.SenderSize
= cpu_to_le16(dev
->max_fib_size
);
131 fibptr
->hw_fib_pa
= hw_fib_pa
;
132 hw_fib
= (struct hw_fib
*)((unsigned char *)hw_fib
+ dev
->max_fib_size
);
133 hw_fib_pa
= hw_fib_pa
+ dev
->max_fib_size
;
136 * Add the fib chain to the free list
138 dev
->fibs
[dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
- 1].next
= NULL
;
140 * Enable this to debug out of queue space
142 dev
->free_fib
= &dev
->fibs
[0];
147 * aac_fib_alloc - allocate a fib
148 * @dev: Adapter to allocate the fib for
150 * Allocate a fib from the adapter fib pool. If the pool is empty we
154 struct fib
*aac_fib_alloc(struct aac_dev
*dev
)
158 spin_lock_irqsave(&dev
->fib_lock
, flags
);
159 fibptr
= dev
->free_fib
;
161 spin_unlock_irqrestore(&dev
->fib_lock
, flags
);
164 dev
->free_fib
= fibptr
->next
;
165 spin_unlock_irqrestore(&dev
->fib_lock
, flags
);
167 * Set the proper node type code and node byte size
169 fibptr
->type
= FSAFS_NTC_FIB_CONTEXT
;
170 fibptr
->size
= sizeof(struct fib
);
172 * Null out fields that depend on being zero at the start of
175 fibptr
->hw_fib_va
->header
.XferState
= 0;
177 fibptr
->callback
= NULL
;
178 fibptr
->callback_data
= NULL
;
184 * aac_fib_free - free a fib
185 * @fibptr: fib to free up
187 * Frees up a fib and places it on the appropriate queue
190 void aac_fib_free(struct fib
*fibptr
)
192 unsigned long flags
, flagsv
;
194 spin_lock_irqsave(&fibptr
->event_lock
, flagsv
);
195 if (fibptr
->done
== 2) {
196 spin_unlock_irqrestore(&fibptr
->event_lock
, flagsv
);
199 spin_unlock_irqrestore(&fibptr
->event_lock
, flagsv
);
201 spin_lock_irqsave(&fibptr
->dev
->fib_lock
, flags
);
202 if (unlikely(fibptr
->flags
& FIB_CONTEXT_FLAG_TIMED_OUT
))
203 aac_config
.fib_timeouts
++;
204 if (fibptr
->hw_fib_va
->header
.XferState
!= 0) {
205 printk(KERN_WARNING
"aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
207 le32_to_cpu(fibptr
->hw_fib_va
->header
.XferState
));
209 fibptr
->next
= fibptr
->dev
->free_fib
;
210 fibptr
->dev
->free_fib
= fibptr
;
211 spin_unlock_irqrestore(&fibptr
->dev
->fib_lock
, flags
);
215 * aac_fib_init - initialise a fib
216 * @fibptr: The fib to initialize
218 * Set up the generic fib fields ready for use
221 void aac_fib_init(struct fib
*fibptr
)
223 struct hw_fib
*hw_fib
= fibptr
->hw_fib_va
;
225 hw_fib
->header
.StructType
= FIB_MAGIC
;
226 hw_fib
->header
.Size
= cpu_to_le16(fibptr
->dev
->max_fib_size
);
227 hw_fib
->header
.XferState
= cpu_to_le32(HostOwned
| FibInitialized
| FibEmpty
| FastResponseCapable
);
228 hw_fib
->header
.SenderFibAddress
= 0; /* Filled in later if needed */
229 hw_fib
->header
.ReceiverFibAddress
= cpu_to_le32(fibptr
->hw_fib_pa
);
230 hw_fib
->header
.SenderSize
= cpu_to_le16(fibptr
->dev
->max_fib_size
);
234 * fib_deallocate - deallocate a fib
235 * @fibptr: fib to deallocate
237 * Will deallocate and return to the free pool the FIB pointed to by the
241 static void fib_dealloc(struct fib
* fibptr
)
243 struct hw_fib
*hw_fib
= fibptr
->hw_fib_va
;
244 BUG_ON(hw_fib
->header
.StructType
!= FIB_MAGIC
);
245 hw_fib
->header
.XferState
= 0;
249 * Commuication primitives define and support the queuing method we use to
250 * support host to adapter commuication. All queue accesses happen through
251 * these routines and are the only routines which have a knowledge of the
252 * how these queues are implemented.
256 * aac_get_entry - get a queue entry
259 * @entry: Entry return
260 * @index: Index return
261 * @nonotify: notification control
263 * With a priority the routine returns a queue entry if the queue has free entries. If the queue
264 * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
268 static int aac_get_entry (struct aac_dev
* dev
, u32 qid
, struct aac_entry
**entry
, u32
* index
, unsigned long *nonotify
)
270 struct aac_queue
* q
;
274 * All of the queues wrap when they reach the end, so we check
275 * to see if they have reached the end and if they have we just
276 * set the index back to zero. This is a wrap. You could or off
277 * the high bits in all updates but this is a bit faster I think.
280 q
= &dev
->queues
->queue
[qid
];
282 idx
= *index
= le32_to_cpu(*(q
->headers
.producer
));
283 /* Interrupt Moderation, only interrupt for first two entries */
284 if (idx
!= le32_to_cpu(*(q
->headers
.consumer
))) {
286 if (qid
== AdapNormCmdQueue
)
287 idx
= ADAP_NORM_CMD_ENTRIES
;
289 idx
= ADAP_NORM_RESP_ENTRIES
;
291 if (idx
!= le32_to_cpu(*(q
->headers
.consumer
)))
295 if (qid
== AdapNormCmdQueue
) {
296 if (*index
>= ADAP_NORM_CMD_ENTRIES
)
297 *index
= 0; /* Wrap to front of the Producer Queue. */
299 if (*index
>= ADAP_NORM_RESP_ENTRIES
)
300 *index
= 0; /* Wrap to front of the Producer Queue. */
304 if ((*index
+ 1) == le32_to_cpu(*(q
->headers
.consumer
))) {
305 printk(KERN_WARNING
"Queue %d full, %u outstanding.\n",
309 *entry
= q
->base
+ *index
;
315 * aac_queue_get - get the next free QE
317 * @index: Returned index
318 * @priority: Priority of fib
319 * @fib: Fib to associate with the queue entry
320 * @wait: Wait if queue full
321 * @fibptr: Driver fib object to go with fib
322 * @nonotify: Don't notify the adapter
324 * Gets the next free QE off the requested priorty adapter command
325 * queue and associates the Fib with the QE. The QE represented by
326 * index is ready to insert on the queue when this routine returns
330 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
)
332 struct aac_entry
* entry
= NULL
;
335 if (qid
== AdapNormCmdQueue
) {
336 /* if no entries wait for some if caller wants to */
337 while (!aac_get_entry(dev
, qid
, &entry
, index
, nonotify
)) {
338 printk(KERN_ERR
"GetEntries failed\n");
341 * Setup queue entry with a command, status and fib mapped
343 entry
->size
= cpu_to_le32(le16_to_cpu(hw_fib
->header
.Size
));
346 while (!aac_get_entry(dev
, qid
, &entry
, index
, nonotify
)) {
347 /* if no entries wait for some if caller wants to */
350 * Setup queue entry with command, status and fib mapped
352 entry
->size
= cpu_to_le32(le16_to_cpu(hw_fib
->header
.Size
));
353 entry
->addr
= hw_fib
->header
.SenderFibAddress
;
354 /* Restore adapters pointer to the FIB */
355 hw_fib
->header
.ReceiverFibAddress
= hw_fib
->header
.SenderFibAddress
; /* Let the adapter now where to find its data */
359 * If MapFib is true than we need to map the Fib and put pointers
360 * in the queue entry.
363 entry
->addr
= cpu_to_le32(fibptr
->hw_fib_pa
);
368 * Define the highest level of host to adapter communication routines.
369 * These routines will support host to adapter FS commuication. These
370 * routines have no knowledge of the commuication method used. This level
371 * sends and receives FIBs. This level has no knowledge of how these FIBs
372 * get passed back and forth.
376 * aac_fib_send - send a fib to the adapter
377 * @command: Command to send
379 * @size: Size of fib data area
380 * @priority: Priority of Fib
381 * @wait: Async/sync select
382 * @reply: True if a reply is wanted
383 * @callback: Called with reply
384 * @callback_data: Passed to callback
386 * Sends the requested FIB to the adapter and optionally will wait for a
387 * response FIB. If the caller does not wish to wait for a response than
388 * an event to wait on must be supplied. This event will be set when a
389 * response FIB is received from the adapter.
392 int aac_fib_send(u16 command
, struct fib
*fibptr
, unsigned long size
,
393 int priority
, int wait
, int reply
, fib_callback callback
,
396 struct aac_dev
* dev
= fibptr
->dev
;
397 struct hw_fib
* hw_fib
= fibptr
->hw_fib_va
;
398 unsigned long flags
= 0;
399 unsigned long qflags
;
400 unsigned long mflags
= 0;
403 if (!(hw_fib
->header
.XferState
& cpu_to_le32(HostOwned
)))
406 * There are 5 cases with the wait and reponse requested flags.
407 * The only invalid cases are if the caller requests to wait and
408 * does not request a response and if the caller does not want a
409 * response and the Fib is not allocated from pool. If a response
410 * is not requesed the Fib will just be deallocaed by the DPC
411 * routine when the response comes back from the adapter. No
412 * further processing will be done besides deleting the Fib. We
413 * will have a debug mode where the adapter can notify the host
414 * it had a problem and the host can log that fact.
417 if (wait
&& !reply
) {
419 } else if (!wait
&& reply
) {
420 hw_fib
->header
.XferState
|= cpu_to_le32(Async
| ResponseExpected
);
421 FIB_COUNTER_INCREMENT(aac_config
.AsyncSent
);
422 } else if (!wait
&& !reply
) {
423 hw_fib
->header
.XferState
|= cpu_to_le32(NoResponseExpected
);
424 FIB_COUNTER_INCREMENT(aac_config
.NoResponseSent
);
425 } else if (wait
&& reply
) {
426 hw_fib
->header
.XferState
|= cpu_to_le32(ResponseExpected
);
427 FIB_COUNTER_INCREMENT(aac_config
.NormalSent
);
430 * Map the fib into 32bits by using the fib number
433 hw_fib
->header
.SenderFibAddress
= cpu_to_le32(((u32
)(fibptr
- dev
->fibs
)) << 2);
434 hw_fib
->header
.SenderData
= (u32
)(fibptr
- dev
->fibs
);
436 * Set FIB state to indicate where it came from and if we want a
437 * response from the adapter. Also load the command from the
440 * Map the hw fib pointer as a 32bit value
442 hw_fib
->header
.Command
= cpu_to_le16(command
);
443 hw_fib
->header
.XferState
|= cpu_to_le32(SentFromHost
);
444 fibptr
->hw_fib_va
->header
.Flags
= 0; /* 0 the flags field - internal only*/
446 * Set the size of the Fib we want to send to the adapter
448 hw_fib
->header
.Size
= cpu_to_le16(sizeof(struct aac_fibhdr
) + size
);
449 if (le16_to_cpu(hw_fib
->header
.Size
) > le16_to_cpu(hw_fib
->header
.SenderSize
)) {
453 * Get a queue entry connect the FIB to it and send an notify
454 * the adapter a command is ready.
456 hw_fib
->header
.XferState
|= cpu_to_le32(NormalPriority
);
459 * Fill in the Callback and CallbackContext if we are not
463 fibptr
->callback
= callback
;
464 fibptr
->callback_data
= callback_data
;
465 fibptr
->flags
= FIB_CONTEXT_FLAG
;
470 FIB_COUNTER_INCREMENT(aac_config
.FibsSent
);
472 dprintk((KERN_DEBUG
"Fib contents:.\n"));
473 dprintk((KERN_DEBUG
" Command = %d.\n", le32_to_cpu(hw_fib
->header
.Command
)));
474 dprintk((KERN_DEBUG
" SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount
*)fib_data(fibptr
))->command
)));
475 dprintk((KERN_DEBUG
" XferState = %x.\n", le32_to_cpu(hw_fib
->header
.XferState
)));
476 dprintk((KERN_DEBUG
" hw_fib va being sent=%p\n",fibptr
->hw_fib_va
));
477 dprintk((KERN_DEBUG
" hw_fib pa being sent=%lx\n",(ulong
)fibptr
->hw_fib_pa
));
478 dprintk((KERN_DEBUG
" fib being sent=%p\n",fibptr
));
485 spin_lock_irqsave(&dev
->manage_lock
, mflags
);
486 if (dev
->management_fib_count
>= AAC_NUM_MGT_FIB
) {
487 printk(KERN_INFO
"No management Fibs Available:%d\n",
488 dev
->management_fib_count
);
489 spin_unlock_irqrestore(&dev
->manage_lock
, mflags
);
492 dev
->management_fib_count
++;
493 spin_unlock_irqrestore(&dev
->manage_lock
, mflags
);
494 spin_lock_irqsave(&fibptr
->event_lock
, flags
);
497 if (aac_adapter_deliver(fibptr
) != 0) {
498 printk(KERN_ERR
"aac_fib_send: returned -EBUSY\n");
500 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
501 spin_lock_irqsave(&dev
->manage_lock
, mflags
);
502 dev
->management_fib_count
--;
503 spin_unlock_irqrestore(&dev
->manage_lock
, mflags
);
510 * If the caller wanted us to wait for response wait now.
514 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
515 /* Only set for first known interruptable command */
518 * *VERY* Dangerous to time out a command, the
519 * assumption is made that we have no hope of
520 * functioning because an interrupt routing or other
521 * hardware failure has occurred.
523 unsigned long count
= 36000000L; /* 3 minutes */
524 while (down_trylock(&fibptr
->event_wait
)) {
527 struct aac_queue
* q
= &dev
->queues
->queue
[AdapNormCmdQueue
];
528 spin_lock_irqsave(q
->lock
, qflags
);
530 spin_unlock_irqrestore(q
->lock
, qflags
);
532 printk(KERN_ERR
"aacraid: aac_fib_send: first asynchronous command timed out.\n"
533 "Usually a result of a PCI interrupt routing problem;\n"
534 "update mother board BIOS or consider utilizing one of\n"
535 "the SAFE mode kernel options (acpi, apic etc)\n");
539 if ((blink
= aac_adapter_check_health(dev
)) > 0) {
541 printk(KERN_ERR
"aacraid: aac_fib_send: adapter blinkLED 0x%x.\n"
542 "Usually a result of a serious unrecoverable hardware problem\n",
549 } else if (down_interruptible(&fibptr
->event_wait
)) {
550 /* Do nothing ... satisfy
551 * down_interruptible must_check */
554 spin_lock_irqsave(&fibptr
->event_lock
, flags
);
555 if (fibptr
->done
== 0) {
556 fibptr
->done
= 2; /* Tell interrupt we aborted */
557 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
560 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
561 BUG_ON(fibptr
->done
== 0);
563 if(unlikely(fibptr
->flags
& FIB_CONTEXT_FLAG_TIMED_OUT
))
568 * If the user does not want a response than return success otherwise
578 * aac_consumer_get - get the top of the queue
581 * @entry: Return entry
583 * Will return a pointer to the entry on the top of the queue requested that
584 * we are a consumer of, and return the address of the queue entry. It does
585 * not change the state of the queue.
588 int aac_consumer_get(struct aac_dev
* dev
, struct aac_queue
* q
, struct aac_entry
**entry
)
592 if (le32_to_cpu(*q
->headers
.producer
) == le32_to_cpu(*q
->headers
.consumer
)) {
596 * The consumer index must be wrapped if we have reached
597 * the end of the queue, else we just use the entry
598 * pointed to by the header index
600 if (le32_to_cpu(*q
->headers
.consumer
) >= q
->entries
)
603 index
= le32_to_cpu(*q
->headers
.consumer
);
604 *entry
= q
->base
+ index
;
611 * aac_consumer_free - free consumer entry
616 * Frees up the current top of the queue we are a consumer of. If the
617 * queue was full notify the producer that the queue is no longer full.
620 void aac_consumer_free(struct aac_dev
* dev
, struct aac_queue
*q
, u32 qid
)
625 if ((le32_to_cpu(*q
->headers
.producer
)+1) == le32_to_cpu(*q
->headers
.consumer
))
628 if (le32_to_cpu(*q
->headers
.consumer
) >= q
->entries
)
629 *q
->headers
.consumer
= cpu_to_le32(1);
631 le32_add_cpu(q
->headers
.consumer
, 1);
636 case HostNormCmdQueue
:
637 notify
= HostNormCmdNotFull
;
639 case HostNormRespQueue
:
640 notify
= HostNormRespNotFull
;
646 aac_adapter_notify(dev
, notify
);
651 * aac_fib_adapter_complete - complete adapter issued fib
652 * @fibptr: fib to complete
655 * Will do all necessary work to complete a FIB that was sent from
659 int aac_fib_adapter_complete(struct fib
*fibptr
, unsigned short size
)
661 struct hw_fib
* hw_fib
= fibptr
->hw_fib_va
;
662 struct aac_dev
* dev
= fibptr
->dev
;
663 struct aac_queue
* q
;
664 unsigned long nointr
= 0;
665 unsigned long qflags
;
667 if (hw_fib
->header
.XferState
== 0) {
668 if (dev
->comm_interface
== AAC_COMM_MESSAGE
)
673 * If we plan to do anything check the structure type first.
675 if (hw_fib
->header
.StructType
!= FIB_MAGIC
) {
676 if (dev
->comm_interface
== AAC_COMM_MESSAGE
)
681 * This block handles the case where the adapter had sent us a
682 * command and we have finished processing the command. We
683 * call completeFib when we are done processing the command
684 * and want to send a response back to the adapter. This will
685 * send the completed cdb to the adapter.
687 if (hw_fib
->header
.XferState
& cpu_to_le32(SentFromAdapter
)) {
688 if (dev
->comm_interface
== AAC_COMM_MESSAGE
) {
692 hw_fib
->header
.XferState
|= cpu_to_le32(HostProcessed
);
694 size
+= sizeof(struct aac_fibhdr
);
695 if (size
> le16_to_cpu(hw_fib
->header
.SenderSize
))
697 hw_fib
->header
.Size
= cpu_to_le16(size
);
699 q
= &dev
->queues
->queue
[AdapNormRespQueue
];
700 spin_lock_irqsave(q
->lock
, qflags
);
701 aac_queue_get(dev
, &index
, AdapNormRespQueue
, hw_fib
, 1, NULL
, &nointr
);
702 *(q
->headers
.producer
) = cpu_to_le32(index
+ 1);
703 spin_unlock_irqrestore(q
->lock
, qflags
);
704 if (!(nointr
& (int)aac_config
.irq_mod
))
705 aac_adapter_notify(dev
, AdapNormRespQueue
);
708 printk(KERN_WARNING
"aac_fib_adapter_complete: "
709 "Unknown xferstate detected.\n");
716 * aac_fib_complete - fib completion handler
717 * @fib: FIB to complete
719 * Will do all necessary work to complete a FIB.
722 int aac_fib_complete(struct fib
*fibptr
)
725 struct hw_fib
* hw_fib
= fibptr
->hw_fib_va
;
728 * Check for a fib which has already been completed
731 if (hw_fib
->header
.XferState
== 0)
734 * If we plan to do anything check the structure type first.
737 if (hw_fib
->header
.StructType
!= FIB_MAGIC
)
740 * This block completes a cdb which orginated on the host and we
741 * just need to deallocate the cdb or reinit it. At this point the
742 * command is complete that we had sent to the adapter and this
743 * cdb could be reused.
745 spin_lock_irqsave(&fibptr
->event_lock
, flags
);
746 if (fibptr
->done
== 2) {
747 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
750 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
752 if((hw_fib
->header
.XferState
& cpu_to_le32(SentFromHost
)) &&
753 (hw_fib
->header
.XferState
& cpu_to_le32(AdapterProcessed
)))
757 else if(hw_fib
->header
.XferState
& cpu_to_le32(SentFromHost
))
760 * This handles the case when the host has aborted the I/O
761 * to the adapter because the adapter is not responding
764 } else if(hw_fib
->header
.XferState
& cpu_to_le32(HostOwned
)) {
773 * aac_printf - handle printf from firmware
777 * Print a message passed to us by the controller firmware on the
781 void aac_printf(struct aac_dev
*dev
, u32 val
)
783 char *cp
= dev
->printfbuf
;
784 if (dev
->printf_enabled
)
786 int length
= val
& 0xffff;
787 int level
= (val
>> 16) & 0xffff;
790 * The size of the printfbuf is set in port.c
791 * There is no variable or define for it
797 if (level
== LOG_AAC_HIGH_ERROR
)
798 printk(KERN_WARNING
"%s:%s", dev
->name
, cp
);
800 printk(KERN_INFO
"%s:%s", dev
->name
, cp
);
807 * aac_handle_aif - Handle a message from the firmware
808 * @dev: Which adapter this fib is from
809 * @fibptr: Pointer to fibptr from adapter
811 * This routine handles a driver notify fib from the adapter and
812 * dispatches it to the appropriate routine for handling.
815 #define AIF_SNIFF_TIMEOUT (30*HZ)
816 static void aac_handle_aif(struct aac_dev
* dev
, struct fib
* fibptr
)
818 struct hw_fib
* hw_fib
= fibptr
->hw_fib_va
;
819 struct aac_aifcmd
* aifcmd
= (struct aac_aifcmd
*)hw_fib
->data
;
820 u32 channel
, id
, lun
, container
;
821 struct scsi_device
*device
;
827 } device_config_needed
= NOTHING
;
829 /* Sniff for container changes */
831 if (!dev
|| !dev
->fsa_dev
)
833 container
= channel
= id
= lun
= (u32
)-1;
836 * We have set this up to try and minimize the number of
837 * re-configures that take place. As a result of this when
838 * certain AIF's come in we will set a flag waiting for another
839 * type of AIF before setting the re-config flag.
841 switch (le32_to_cpu(aifcmd
->command
)) {
842 case AifCmdDriverNotify
:
843 switch (le32_to_cpu(((__le32
*)aifcmd
->data
)[0])) {
845 * Morph or Expand complete
847 case AifDenMorphComplete
:
848 case AifDenVolumeExtendComplete
:
849 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
850 if (container
>= dev
->maximum_num_containers
)
854 * Find the scsi_device associated with the SCSI
855 * address. Make sure we have the right array, and if
856 * so set the flag to initiate a new re-config once we
857 * see an AifEnConfigChange AIF come through.
860 if ((dev
!= NULL
) && (dev
->scsi_host_ptr
!= NULL
)) {
861 device
= scsi_device_lookup(dev
->scsi_host_ptr
,
862 CONTAINER_TO_CHANNEL(container
),
863 CONTAINER_TO_ID(container
),
864 CONTAINER_TO_LUN(container
));
866 dev
->fsa_dev
[container
].config_needed
= CHANGE
;
867 dev
->fsa_dev
[container
].config_waiting_on
= AifEnConfigChange
;
868 dev
->fsa_dev
[container
].config_waiting_stamp
= jiffies
;
869 scsi_device_put(device
);
875 * If we are waiting on something and this happens to be
876 * that thing then set the re-configure flag.
878 if (container
!= (u32
)-1) {
879 if (container
>= dev
->maximum_num_containers
)
881 if ((dev
->fsa_dev
[container
].config_waiting_on
==
882 le32_to_cpu(*(__le32
*)aifcmd
->data
)) &&
883 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
884 dev
->fsa_dev
[container
].config_waiting_on
= 0;
885 } else for (container
= 0;
886 container
< dev
->maximum_num_containers
; ++container
) {
887 if ((dev
->fsa_dev
[container
].config_waiting_on
==
888 le32_to_cpu(*(__le32
*)aifcmd
->data
)) &&
889 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
890 dev
->fsa_dev
[container
].config_waiting_on
= 0;
894 case AifCmdEventNotify
:
895 switch (le32_to_cpu(((__le32
*)aifcmd
->data
)[0])) {
896 case AifEnBatteryEvent
:
897 dev
->cache_protected
=
898 (((__le32
*)aifcmd
->data
)[1] == cpu_to_le32(3));
903 case AifEnAddContainer
:
904 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
905 if (container
>= dev
->maximum_num_containers
)
907 dev
->fsa_dev
[container
].config_needed
= ADD
;
908 dev
->fsa_dev
[container
].config_waiting_on
=
910 dev
->fsa_dev
[container
].config_waiting_stamp
= jiffies
;
916 case AifEnDeleteContainer
:
917 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
918 if (container
>= dev
->maximum_num_containers
)
920 dev
->fsa_dev
[container
].config_needed
= DELETE
;
921 dev
->fsa_dev
[container
].config_waiting_on
=
923 dev
->fsa_dev
[container
].config_waiting_stamp
= jiffies
;
927 * Container change detected. If we currently are not
928 * waiting on something else, setup to wait on a Config Change.
930 case AifEnContainerChange
:
931 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
932 if (container
>= dev
->maximum_num_containers
)
934 if (dev
->fsa_dev
[container
].config_waiting_on
&&
935 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
937 dev
->fsa_dev
[container
].config_needed
= CHANGE
;
938 dev
->fsa_dev
[container
].config_waiting_on
=
940 dev
->fsa_dev
[container
].config_waiting_stamp
= jiffies
;
943 case AifEnConfigChange
:
947 case AifEnDeleteJBOD
:
948 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
949 if ((container
>> 28)) {
953 channel
= (container
>> 24) & 0xF;
954 if (channel
>= dev
->maximum_num_channels
) {
958 id
= container
& 0xFFFF;
959 if (id
>= dev
->maximum_num_physicals
) {
963 lun
= (container
>> 16) & 0xFF;
965 channel
= aac_phys_to_logical(channel
);
966 device_config_needed
=
967 (((__le32
*)aifcmd
->data
)[0] ==
968 cpu_to_le32(AifEnAddJBOD
)) ? ADD
: DELETE
;
969 if (device_config_needed
== ADD
) {
970 device
= scsi_device_lookup(dev
->scsi_host_ptr
,
975 scsi_remove_device(device
);
976 scsi_device_put(device
);
981 case AifEnEnclosureManagement
:
983 * If in JBOD mode, automatic exposure of new
984 * physical target to be suppressed until configured.
988 switch (le32_to_cpu(((__le32
*)aifcmd
->data
)[3])) {
989 case EM_DRIVE_INSERTION
:
990 case EM_DRIVE_REMOVAL
:
991 container
= le32_to_cpu(
992 ((__le32
*)aifcmd
->data
)[2]);
993 if ((container
>> 28)) {
997 channel
= (container
>> 24) & 0xF;
998 if (channel
>= dev
->maximum_num_channels
) {
1002 id
= container
& 0xFFFF;
1003 lun
= (container
>> 16) & 0xFF;
1004 container
= (u32
)-1;
1005 if (id
>= dev
->maximum_num_physicals
) {
1006 /* legacy dev_t ? */
1007 if ((0x2000 <= id
) || lun
|| channel
||
1008 ((channel
= (id
>> 7) & 0x3F) >=
1009 dev
->maximum_num_channels
))
1011 lun
= (id
>> 4) & 7;
1014 channel
= aac_phys_to_logical(channel
);
1015 device_config_needed
=
1016 (((__le32
*)aifcmd
->data
)[3]
1017 == cpu_to_le32(EM_DRIVE_INSERTION
)) ?
1025 * If we are waiting on something and this happens to be
1026 * that thing then set the re-configure flag.
1028 if (container
!= (u32
)-1) {
1029 if (container
>= dev
->maximum_num_containers
)
1031 if ((dev
->fsa_dev
[container
].config_waiting_on
==
1032 le32_to_cpu(*(__le32
*)aifcmd
->data
)) &&
1033 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
1034 dev
->fsa_dev
[container
].config_waiting_on
= 0;
1035 } else for (container
= 0;
1036 container
< dev
->maximum_num_containers
; ++container
) {
1037 if ((dev
->fsa_dev
[container
].config_waiting_on
==
1038 le32_to_cpu(*(__le32
*)aifcmd
->data
)) &&
1039 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
1040 dev
->fsa_dev
[container
].config_waiting_on
= 0;
1044 case AifCmdJobProgress
:
1046 * These are job progress AIF's. When a Clear is being
1047 * done on a container it is initially created then hidden from
1048 * the OS. When the clear completes we don't get a config
1049 * change so we monitor the job status complete on a clear then
1050 * wait for a container change.
1053 if (((__le32
*)aifcmd
->data
)[1] == cpu_to_le32(AifJobCtrZero
) &&
1054 (((__le32
*)aifcmd
->data
)[6] == ((__le32
*)aifcmd
->data
)[5] ||
1055 ((__le32
*)aifcmd
->data
)[4] == cpu_to_le32(AifJobStsSuccess
))) {
1057 container
< dev
->maximum_num_containers
;
1060 * Stomp on all config sequencing for all
1063 dev
->fsa_dev
[container
].config_waiting_on
=
1064 AifEnContainerChange
;
1065 dev
->fsa_dev
[container
].config_needed
= ADD
;
1066 dev
->fsa_dev
[container
].config_waiting_stamp
=
1070 if (((__le32
*)aifcmd
->data
)[1] == cpu_to_le32(AifJobCtrZero
) &&
1071 ((__le32
*)aifcmd
->data
)[6] == 0 &&
1072 ((__le32
*)aifcmd
->data
)[4] == cpu_to_le32(AifJobStsRunning
)) {
1074 container
< dev
->maximum_num_containers
;
1077 * Stomp on all config sequencing for all
1080 dev
->fsa_dev
[container
].config_waiting_on
=
1081 AifEnContainerChange
;
1082 dev
->fsa_dev
[container
].config_needed
= DELETE
;
1083 dev
->fsa_dev
[container
].config_waiting_stamp
=
1092 if (device_config_needed
== NOTHING
)
1093 for (; container
< dev
->maximum_num_containers
; ++container
) {
1094 if ((dev
->fsa_dev
[container
].config_waiting_on
== 0) &&
1095 (dev
->fsa_dev
[container
].config_needed
!= NOTHING
) &&
1096 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
)) {
1097 device_config_needed
=
1098 dev
->fsa_dev
[container
].config_needed
;
1099 dev
->fsa_dev
[container
].config_needed
= NOTHING
;
1100 channel
= CONTAINER_TO_CHANNEL(container
);
1101 id
= CONTAINER_TO_ID(container
);
1102 lun
= CONTAINER_TO_LUN(container
);
1106 if (device_config_needed
== NOTHING
)
1110 * If we decided that a re-configuration needs to be done,
1111 * schedule it here on the way out the door, please close the door
1116 * Find the scsi_device associated with the SCSI address,
1117 * and mark it as changed, invalidating the cache. This deals
1118 * with changes to existing device IDs.
1121 if (!dev
|| !dev
->scsi_host_ptr
)
1124 * force reload of disk info via aac_probe_container
1126 if ((channel
== CONTAINER_CHANNEL
) &&
1127 (device_config_needed
!= NOTHING
)) {
1128 if (dev
->fsa_dev
[container
].valid
== 1)
1129 dev
->fsa_dev
[container
].valid
= 2;
1130 aac_probe_container(dev
, container
);
1132 device
= scsi_device_lookup(dev
->scsi_host_ptr
, channel
, id
, lun
);
1134 switch (device_config_needed
) {
1136 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1137 scsi_remove_device(device
);
1139 if (scsi_device_online(device
)) {
1140 scsi_device_set_state(device
, SDEV_OFFLINE
);
1141 sdev_printk(KERN_INFO
, device
,
1142 "Device offlined - %s\n",
1143 (channel
== CONTAINER_CHANNEL
) ?
1145 "enclosure services event");
1150 if (!scsi_device_online(device
)) {
1151 sdev_printk(KERN_INFO
, device
,
1152 "Device online - %s\n",
1153 (channel
== CONTAINER_CHANNEL
) ?
1155 "enclosure services event");
1156 scsi_device_set_state(device
, SDEV_RUNNING
);
1160 if ((channel
== CONTAINER_CHANNEL
)
1161 && (!dev
->fsa_dev
[container
].valid
)) {
1162 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1163 scsi_remove_device(device
);
1165 if (!scsi_device_online(device
))
1167 scsi_device_set_state(device
, SDEV_OFFLINE
);
1168 sdev_printk(KERN_INFO
, device
,
1169 "Device offlined - %s\n",
1174 scsi_rescan_device(&device
->sdev_gendev
);
1179 scsi_device_put(device
);
1180 device_config_needed
= NOTHING
;
1182 if (device_config_needed
== ADD
)
1183 scsi_add_device(dev
->scsi_host_ptr
, channel
, id
, lun
);
1184 if (channel
== CONTAINER_CHANNEL
) {
1186 device_config_needed
= NOTHING
;
1191 static int _aac_reset_adapter(struct aac_dev
*aac
, int forced
)
1195 struct Scsi_Host
*host
;
1196 struct scsi_device
*dev
;
1197 struct scsi_cmnd
*command
;
1198 struct scsi_cmnd
*command_list
;
1203 * - host is locked, unless called by the aacraid thread.
1204 * (a matter of convenience, due to legacy issues surrounding
1205 * eh_host_adapter_reset).
1206 * - in_reset is asserted, so no new i/o is getting to the
1208 * - The card is dead, or will be very shortly ;-/ so no new
1209 * commands are completing in the interrupt service.
1211 host
= aac
->scsi_host_ptr
;
1212 scsi_block_requests(host
);
1213 aac_adapter_disable_int(aac
);
1214 if (aac
->thread
->pid
!= current
->pid
) {
1215 spin_unlock_irq(host
->host_lock
);
1216 kthread_stop(aac
->thread
);
1221 * If a positive health, means in a known DEAD PANIC
1222 * state and the adapter could be reset to `try again'.
1224 retval
= aac_adapter_restart(aac
, forced
? 0 : aac_adapter_check_health(aac
));
1230 * Loop through the fibs, close the synchronous FIBS
1232 for (retval
= 1, index
= 0; index
< (aac
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
); index
++) {
1233 struct fib
*fib
= &aac
->fibs
[index
];
1234 if (!(fib
->hw_fib_va
->header
.XferState
& cpu_to_le32(NoResponseExpected
| Async
)) &&
1235 (fib
->hw_fib_va
->header
.XferState
& cpu_to_le32(ResponseExpected
))) {
1236 unsigned long flagv
;
1237 spin_lock_irqsave(&fib
->event_lock
, flagv
);
1238 up(&fib
->event_wait
);
1239 spin_unlock_irqrestore(&fib
->event_lock
, flagv
);
1244 /* Give some extra time for ioctls to complete. */
1247 index
= aac
->cardtype
;
1250 * Re-initialize the adapter, first free resources, then carefully
1251 * apply the initialization sequence to come back again. Only risk
1252 * is a change in Firmware dropping cache, it is assumed the caller
1253 * will ensure that i/o is queisced and the card is flushed in that
1256 aac_fib_map_free(aac
);
1257 pci_free_consistent(aac
->pdev
, aac
->comm_size
, aac
->comm_addr
, aac
->comm_phys
);
1258 aac
->comm_addr
= NULL
;
1262 free_irq(aac
->pdev
->irq
, aac
);
1263 kfree(aac
->fsa_dev
);
1264 aac
->fsa_dev
= NULL
;
1265 quirks
= aac_get_driver_ident(index
)->quirks
;
1266 if (quirks
& AAC_QUIRK_31BIT
) {
1267 if (((retval
= pci_set_dma_mask(aac
->pdev
, DMA_BIT_MASK(31)))) ||
1268 ((retval
= pci_set_consistent_dma_mask(aac
->pdev
, DMA_BIT_MASK(31)))))
1271 if (((retval
= pci_set_dma_mask(aac
->pdev
, DMA_BIT_MASK(32)))) ||
1272 ((retval
= pci_set_consistent_dma_mask(aac
->pdev
, DMA_BIT_MASK(32)))))
1275 if ((retval
= (*(aac_get_driver_ident(index
)->init
))(aac
)))
1277 if (quirks
& AAC_QUIRK_31BIT
)
1278 if ((retval
= pci_set_dma_mask(aac
->pdev
, DMA_BIT_MASK(32))))
1281 aac
->thread
= kthread_run(aac_command_thread
, aac
, aac
->name
);
1282 if (IS_ERR(aac
->thread
)) {
1283 retval
= PTR_ERR(aac
->thread
);
1287 (void)aac_get_adapter_info(aac
);
1288 if ((quirks
& AAC_QUIRK_34SG
) && (host
->sg_tablesize
> 34)) {
1289 host
->sg_tablesize
= 34;
1290 host
->max_sectors
= (host
->sg_tablesize
* 8) + 112;
1292 if ((quirks
& AAC_QUIRK_17SG
) && (host
->sg_tablesize
> 17)) {
1293 host
->sg_tablesize
= 17;
1294 host
->max_sectors
= (host
->sg_tablesize
* 8) + 112;
1296 aac_get_config_status(aac
, 1);
1297 aac_get_containers(aac
);
1299 * This is where the assumption that the Adapter is quiesced
1302 command_list
= NULL
;
1303 __shost_for_each_device(dev
, host
) {
1304 unsigned long flags
;
1305 spin_lock_irqsave(&dev
->list_lock
, flags
);
1306 list_for_each_entry(command
, &dev
->cmd_list
, list
)
1307 if (command
->SCp
.phase
== AAC_OWNER_FIRMWARE
) {
1308 command
->SCp
.buffer
= (struct scatterlist
*)command_list
;
1309 command_list
= command
;
1311 spin_unlock_irqrestore(&dev
->list_lock
, flags
);
1313 while ((command
= command_list
)) {
1314 command_list
= (struct scsi_cmnd
*)command
->SCp
.buffer
;
1315 command
->SCp
.buffer
= NULL
;
1316 command
->result
= DID_OK
<< 16
1317 | COMMAND_COMPLETE
<< 8
1318 | SAM_STAT_TASK_SET_FULL
;
1319 command
->SCp
.phase
= AAC_OWNER_ERROR_HANDLER
;
1320 command
->scsi_done(command
);
1326 scsi_unblock_requests(host
);
1328 spin_lock_irq(host
->host_lock
);
1333 int aac_reset_adapter(struct aac_dev
* aac
, int forced
)
1335 unsigned long flagv
= 0;
1337 struct Scsi_Host
* host
;
1339 if (spin_trylock_irqsave(&aac
->fib_lock
, flagv
) == 0)
1342 if (aac
->in_reset
) {
1343 spin_unlock_irqrestore(&aac
->fib_lock
, flagv
);
1347 spin_unlock_irqrestore(&aac
->fib_lock
, flagv
);
1350 * Wait for all commands to complete to this specific
1351 * target (block maximum 60 seconds). Although not necessary,
1352 * it does make us a good storage citizen.
1354 host
= aac
->scsi_host_ptr
;
1355 scsi_block_requests(host
);
1356 if (forced
< 2) for (retval
= 60; retval
; --retval
) {
1357 struct scsi_device
* dev
;
1358 struct scsi_cmnd
* command
;
1361 __shost_for_each_device(dev
, host
) {
1362 spin_lock_irqsave(&dev
->list_lock
, flagv
);
1363 list_for_each_entry(command
, &dev
->cmd_list
, list
) {
1364 if (command
->SCp
.phase
== AAC_OWNER_FIRMWARE
) {
1369 spin_unlock_irqrestore(&dev
->list_lock
, flagv
);
1375 * We can exit If all the commands are complete
1382 /* Quiesce build, flush cache, write through mode */
1384 aac_send_shutdown(aac
);
1385 spin_lock_irqsave(host
->host_lock
, flagv
);
1386 retval
= _aac_reset_adapter(aac
, forced
? forced
: ((aac_check_reset
!= 0) && (aac_check_reset
!= 1)));
1387 spin_unlock_irqrestore(host
->host_lock
, flagv
);
1389 if ((forced
< 2) && (retval
== -ENODEV
)) {
1390 /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */
1391 struct fib
* fibctx
= aac_fib_alloc(aac
);
1393 struct aac_pause
*cmd
;
1396 aac_fib_init(fibctx
);
1398 cmd
= (struct aac_pause
*) fib_data(fibctx
);
1400 cmd
->command
= cpu_to_le32(VM_ContainerConfig
);
1401 cmd
->type
= cpu_to_le32(CT_PAUSE_IO
);
1402 cmd
->timeout
= cpu_to_le32(1);
1403 cmd
->min
= cpu_to_le32(1);
1404 cmd
->noRescan
= cpu_to_le32(1);
1405 cmd
->count
= cpu_to_le32(0);
1407 status
= aac_fib_send(ContainerCommand
,
1409 sizeof(struct aac_pause
),
1411 -2 /* Timeout silently */, 1,
1415 aac_fib_complete(fibctx
);
1416 /* FIB should be freed only after getting
1417 * the response from the F/W */
1418 if (status
!= -ERESTARTSYS
)
1419 aac_fib_free(fibctx
);
1426 int aac_check_health(struct aac_dev
* aac
)
1429 unsigned long time_now
, flagv
= 0;
1430 struct list_head
* entry
;
1431 struct Scsi_Host
* host
;
1433 /* Extending the scope of fib_lock slightly to protect aac->in_reset */
1434 if (spin_trylock_irqsave(&aac
->fib_lock
, flagv
) == 0)
1437 if (aac
->in_reset
|| !(BlinkLED
= aac_adapter_check_health(aac
))) {
1438 spin_unlock_irqrestore(&aac
->fib_lock
, flagv
);
1445 * aac_aifcmd.command = AifCmdEventNotify = 1
1446 * aac_aifcmd.seqnum = 0xFFFFFFFF
1447 * aac_aifcmd.data[0] = AifEnExpEvent = 23
1448 * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3
1449 * aac.aifcmd.data[2] = AifHighPriority = 3
1450 * aac.aifcmd.data[3] = BlinkLED
1453 time_now
= jiffies
/HZ
;
1454 entry
= aac
->fib_list
.next
;
1457 * For each Context that is on the
1458 * fibctxList, make a copy of the
1459 * fib, and then set the event to wake up the
1460 * thread that is waiting for it.
1462 while (entry
!= &aac
->fib_list
) {
1464 * Extract the fibctx
1466 struct aac_fib_context
*fibctx
= list_entry(entry
, struct aac_fib_context
, next
);
1467 struct hw_fib
* hw_fib
;
1470 * Check if the queue is getting
1473 if (fibctx
->count
> 20) {
1475 * It's *not* jiffies folks,
1476 * but jiffies / HZ, so do not
1479 u32 time_last
= fibctx
->jiffies
;
1481 * Has it been > 2 minutes
1482 * since the last read off
1485 if ((time_now
- time_last
) > aif_timeout
) {
1486 entry
= entry
->next
;
1487 aac_close_fib_context(aac
, fibctx
);
1492 * Warning: no sleep allowed while
1495 hw_fib
= kzalloc(sizeof(struct hw_fib
), GFP_ATOMIC
);
1496 fib
= kzalloc(sizeof(struct fib
), GFP_ATOMIC
);
1497 if (fib
&& hw_fib
) {
1498 struct aac_aifcmd
* aif
;
1500 fib
->hw_fib_va
= hw_fib
;
1503 fib
->type
= FSAFS_NTC_FIB_CONTEXT
;
1504 fib
->size
= sizeof (struct fib
);
1505 fib
->data
= hw_fib
->data
;
1506 aif
= (struct aac_aifcmd
*)hw_fib
->data
;
1507 aif
->command
= cpu_to_le32(AifCmdEventNotify
);
1508 aif
->seqnum
= cpu_to_le32(0xFFFFFFFF);
1509 ((__le32
*)aif
->data
)[0] = cpu_to_le32(AifEnExpEvent
);
1510 ((__le32
*)aif
->data
)[1] = cpu_to_le32(AifExeFirmwarePanic
);
1511 ((__le32
*)aif
->data
)[2] = cpu_to_le32(AifHighPriority
);
1512 ((__le32
*)aif
->data
)[3] = cpu_to_le32(BlinkLED
);
1515 * Put the FIB onto the
1518 list_add_tail(&fib
->fiblink
, &fibctx
->fib_list
);
1521 * Set the event to wake up the
1522 * thread that will waiting.
1524 up(&fibctx
->wait_sem
);
1526 printk(KERN_WARNING
"aifd: didn't allocate NewFib.\n");
1530 entry
= entry
->next
;
1533 spin_unlock_irqrestore(&aac
->fib_lock
, flagv
);
1536 printk(KERN_ERR
"%s: Host adapter dead %d\n", aac
->name
, BlinkLED
);
1540 printk(KERN_ERR
"%s: Host adapter BLINK LED 0x%x\n", aac
->name
, BlinkLED
);
1542 if (!aac_check_reset
|| ((aac_check_reset
== 1) &&
1543 (aac
->supplement_adapter_info
.SupportedOptions2
&
1544 AAC_OPTION_IGNORE_RESET
)))
1546 host
= aac
->scsi_host_ptr
;
1547 if (aac
->thread
->pid
!= current
->pid
)
1548 spin_lock_irqsave(host
->host_lock
, flagv
);
1549 BlinkLED
= _aac_reset_adapter(aac
, aac_check_reset
!= 1);
1550 if (aac
->thread
->pid
!= current
->pid
)
1551 spin_unlock_irqrestore(host
->host_lock
, flagv
);
1561 * aac_command_thread - command processing thread
1562 * @dev: Adapter to monitor
1564 * Waits on the commandready event in it's queue. When the event gets set
1565 * it will pull FIBs off it's queue. It will continue to pull FIBs off
1566 * until the queue is empty. When the queue is empty it will wait for
1570 int aac_command_thread(void *data
)
1572 struct aac_dev
*dev
= data
;
1573 struct hw_fib
*hw_fib
, *hw_newfib
;
1574 struct fib
*fib
, *newfib
;
1575 struct aac_fib_context
*fibctx
;
1576 unsigned long flags
;
1577 DECLARE_WAITQUEUE(wait
, current
);
1578 unsigned long next_jiffies
= jiffies
+ HZ
;
1579 unsigned long next_check_jiffies
= next_jiffies
;
1580 long difference
= HZ
;
1583 * We can only have one thread per adapter for AIF's.
1585 if (dev
->aif_thread
)
1589 * Let the DPC know it has a place to send the AIF's to.
1591 dev
->aif_thread
= 1;
1592 add_wait_queue(&dev
->queues
->queue
[HostNormCmdQueue
].cmdready
, &wait
);
1593 set_current_state(TASK_INTERRUPTIBLE
);
1594 dprintk ((KERN_INFO
"aac_command_thread start\n"));
1596 spin_lock_irqsave(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1597 while(!list_empty(&(dev
->queues
->queue
[HostNormCmdQueue
].cmdq
))) {
1598 struct list_head
*entry
;
1599 struct aac_aifcmd
* aifcmd
;
1601 set_current_state(TASK_RUNNING
);
1603 entry
= dev
->queues
->queue
[HostNormCmdQueue
].cmdq
.next
;
1606 spin_unlock_irqrestore(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1607 fib
= list_entry(entry
, struct fib
, fiblink
);
1609 * We will process the FIB here or pass it to a
1610 * worker thread that is TBD. We Really can't
1611 * do anything at this point since we don't have
1612 * anything defined for this thread to do.
1614 hw_fib
= fib
->hw_fib_va
;
1615 memset(fib
, 0, sizeof(struct fib
));
1616 fib
->type
= FSAFS_NTC_FIB_CONTEXT
;
1617 fib
->size
= sizeof(struct fib
);
1618 fib
->hw_fib_va
= hw_fib
;
1619 fib
->data
= hw_fib
->data
;
1622 * We only handle AifRequest fibs from the adapter.
1624 aifcmd
= (struct aac_aifcmd
*) hw_fib
->data
;
1625 if (aifcmd
->command
== cpu_to_le32(AifCmdDriverNotify
)) {
1626 /* Handle Driver Notify Events */
1627 aac_handle_aif(dev
, fib
);
1628 *(__le32
*)hw_fib
->data
= cpu_to_le32(ST_OK
);
1629 aac_fib_adapter_complete(fib
, (u16
)sizeof(u32
));
1631 /* The u32 here is important and intended. We are using
1632 32bit wrapping time to fit the adapter field */
1634 u32 time_now
, time_last
;
1635 unsigned long flagv
;
1637 struct hw_fib
** hw_fib_pool
, ** hw_fib_p
;
1638 struct fib
** fib_pool
, ** fib_p
;
1641 if ((aifcmd
->command
==
1642 cpu_to_le32(AifCmdEventNotify
)) ||
1644 cpu_to_le32(AifCmdJobProgress
))) {
1645 aac_handle_aif(dev
, fib
);
1648 time_now
= jiffies
/HZ
;
1651 * Warning: no sleep allowed while
1652 * holding spinlock. We take the estimate
1653 * and pre-allocate a set of fibs outside the
1656 num
= le32_to_cpu(dev
->init
->AdapterFibsSize
)
1657 / sizeof(struct hw_fib
); /* some extra */
1658 spin_lock_irqsave(&dev
->fib_lock
, flagv
);
1659 entry
= dev
->fib_list
.next
;
1660 while (entry
!= &dev
->fib_list
) {
1661 entry
= entry
->next
;
1664 spin_unlock_irqrestore(&dev
->fib_lock
, flagv
);
1668 && ((hw_fib_pool
= kmalloc(sizeof(struct hw_fib
*) * num
, GFP_KERNEL
)))
1669 && ((fib_pool
= kmalloc(sizeof(struct fib
*) * num
, GFP_KERNEL
)))) {
1670 hw_fib_p
= hw_fib_pool
;
1672 while (hw_fib_p
< &hw_fib_pool
[num
]) {
1673 if (!(*(hw_fib_p
++) = kmalloc(sizeof(struct hw_fib
), GFP_KERNEL
))) {
1677 if (!(*(fib_p
++) = kmalloc(sizeof(struct fib
), GFP_KERNEL
))) {
1678 kfree(*(--hw_fib_p
));
1682 if ((num
= hw_fib_p
- hw_fib_pool
) == 0) {
1692 spin_lock_irqsave(&dev
->fib_lock
, flagv
);
1693 entry
= dev
->fib_list
.next
;
1695 * For each Context that is on the
1696 * fibctxList, make a copy of the
1697 * fib, and then set the event to wake up the
1698 * thread that is waiting for it.
1700 hw_fib_p
= hw_fib_pool
;
1702 while (entry
!= &dev
->fib_list
) {
1704 * Extract the fibctx
1706 fibctx
= list_entry(entry
, struct aac_fib_context
, next
);
1708 * Check if the queue is getting
1711 if (fibctx
->count
> 20)
1714 * It's *not* jiffies folks,
1715 * but jiffies / HZ so do not
1718 time_last
= fibctx
->jiffies
;
1720 * Has it been > 2 minutes
1721 * since the last read off
1724 if ((time_now
- time_last
) > aif_timeout
) {
1725 entry
= entry
->next
;
1726 aac_close_fib_context(dev
, fibctx
);
1731 * Warning: no sleep allowed while
1734 if (hw_fib_p
< &hw_fib_pool
[num
]) {
1735 hw_newfib
= *hw_fib_p
;
1736 *(hw_fib_p
++) = NULL
;
1740 * Make the copy of the FIB
1742 memcpy(hw_newfib
, hw_fib
, sizeof(struct hw_fib
));
1743 memcpy(newfib
, fib
, sizeof(struct fib
));
1744 newfib
->hw_fib_va
= hw_newfib
;
1746 * Put the FIB onto the
1749 list_add_tail(&newfib
->fiblink
, &fibctx
->fib_list
);
1752 * Set the event to wake up the
1753 * thread that is waiting.
1755 up(&fibctx
->wait_sem
);
1757 printk(KERN_WARNING
"aifd: didn't allocate NewFib.\n");
1759 entry
= entry
->next
;
1762 * Set the status of this FIB
1764 *(__le32
*)hw_fib
->data
= cpu_to_le32(ST_OK
);
1765 aac_fib_adapter_complete(fib
, sizeof(u32
));
1766 spin_unlock_irqrestore(&dev
->fib_lock
, flagv
);
1767 /* Free up the remaining resources */
1768 hw_fib_p
= hw_fib_pool
;
1770 while (hw_fib_p
< &hw_fib_pool
[num
]) {
1780 spin_lock_irqsave(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1783 * There are no more AIF's
1785 spin_unlock_irqrestore(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1788 * Background activity
1790 if ((time_before(next_check_jiffies
,next_jiffies
))
1791 && ((difference
= next_check_jiffies
- jiffies
) <= 0)) {
1792 next_check_jiffies
= next_jiffies
;
1793 if (aac_check_health(dev
) == 0) {
1794 difference
= ((long)(unsigned)check_interval
)
1796 next_check_jiffies
= jiffies
+ difference
;
1797 } else if (!dev
->queues
)
1800 if (!time_before(next_check_jiffies
,next_jiffies
)
1801 && ((difference
= next_jiffies
- jiffies
) <= 0)) {
1805 /* Don't even try to talk to adapter if its sick */
1806 ret
= aac_check_health(dev
);
1807 if (!ret
&& !dev
->queues
)
1809 next_check_jiffies
= jiffies
1810 + ((long)(unsigned)check_interval
)
1812 do_gettimeofday(&now
);
1814 /* Synchronize our watches */
1815 if (((1000000 - (1000000 / HZ
)) > now
.tv_usec
)
1816 && (now
.tv_usec
> (1000000 / HZ
)))
1817 difference
= (((1000000 - now
.tv_usec
) * HZ
)
1818 + 500000) / 1000000;
1819 else if (ret
== 0) {
1822 if ((fibptr
= aac_fib_alloc(dev
))) {
1826 aac_fib_init(fibptr
);
1828 info
= (__le32
*) fib_data(fibptr
);
1829 if (now
.tv_usec
> 500000)
1832 *info
= cpu_to_le32(now
.tv_sec
);
1834 status
= aac_fib_send(SendHostTime
,
1841 /* Do not set XferState to zero unless
1842 * receives a response from F/W */
1844 aac_fib_complete(fibptr
);
1845 /* FIB should be freed only after
1846 * getting the response from the F/W */
1847 if (status
!= -ERESTARTSYS
)
1848 aac_fib_free(fibptr
);
1850 difference
= (long)(unsigned)update_interval
*HZ
;
1853 difference
= 10 * HZ
;
1855 next_jiffies
= jiffies
+ difference
;
1856 if (time_before(next_check_jiffies
,next_jiffies
))
1857 difference
= next_check_jiffies
- jiffies
;
1859 if (difference
<= 0)
1861 set_current_state(TASK_INTERRUPTIBLE
);
1862 schedule_timeout(difference
);
1864 if (kthread_should_stop())
1868 remove_wait_queue(&dev
->queues
->queue
[HostNormCmdQueue
].cmdready
, &wait
);
1869 dev
->aif_thread
= 0;