2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
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 <scsi/scsi.h>
45 #include <scsi/scsi_host.h>
46 #include <scsi/scsi_device.h>
47 #include <scsi/scsi_cmnd.h>
48 #include <asm/semaphore.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
]; i
< (dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
); i
++, fibptr
++)
122 fibptr
->hw_fib_va
= hw_fib
;
123 fibptr
->data
= (void *) fibptr
->hw_fib_va
->data
;
124 fibptr
->next
= fibptr
+1; /* Forward chain the fibs */
125 init_MUTEX_LOCKED(&fibptr
->event_wait
);
126 spin_lock_init(&fibptr
->event_lock
);
127 hw_fib
->header
.XferState
= cpu_to_le32(0xffffffff);
128 hw_fib
->header
.SenderSize
= cpu_to_le16(dev
->max_fib_size
);
129 fibptr
->hw_fib_pa
= hw_fib_pa
;
130 hw_fib
= (struct hw_fib
*)((unsigned char *)hw_fib
+ dev
->max_fib_size
);
131 hw_fib_pa
= hw_fib_pa
+ dev
->max_fib_size
;
134 * Add the fib chain to the free list
136 dev
->fibs
[dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
- 1].next
= NULL
;
138 * Enable this to debug out of queue space
140 dev
->free_fib
= &dev
->fibs
[0];
145 * aac_fib_alloc - allocate a fib
146 * @dev: Adapter to allocate the fib for
148 * Allocate a fib from the adapter fib pool. If the pool is empty we
152 struct fib
*aac_fib_alloc(struct aac_dev
*dev
)
156 spin_lock_irqsave(&dev
->fib_lock
, flags
);
157 fibptr
= dev
->free_fib
;
159 spin_unlock_irqrestore(&dev
->fib_lock
, flags
);
162 dev
->free_fib
= fibptr
->next
;
163 spin_unlock_irqrestore(&dev
->fib_lock
, flags
);
165 * Set the proper node type code and node byte size
167 fibptr
->type
= FSAFS_NTC_FIB_CONTEXT
;
168 fibptr
->size
= sizeof(struct fib
);
170 * Null out fields that depend on being zero at the start of
173 fibptr
->hw_fib_va
->header
.XferState
= 0;
175 fibptr
->callback
= NULL
;
176 fibptr
->callback_data
= NULL
;
182 * aac_fib_free - free a fib
183 * @fibptr: fib to free up
185 * Frees up a fib and places it on the appropriate queue
188 void aac_fib_free(struct fib
*fibptr
)
192 spin_lock_irqsave(&fibptr
->dev
->fib_lock
, flags
);
193 if (unlikely(fibptr
->flags
& FIB_CONTEXT_FLAG_TIMED_OUT
))
194 aac_config
.fib_timeouts
++;
195 if (fibptr
->hw_fib_va
->header
.XferState
!= 0) {
196 printk(KERN_WARNING
"aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
198 le32_to_cpu(fibptr
->hw_fib_va
->header
.XferState
));
200 fibptr
->next
= fibptr
->dev
->free_fib
;
201 fibptr
->dev
->free_fib
= fibptr
;
202 spin_unlock_irqrestore(&fibptr
->dev
->fib_lock
, flags
);
206 * aac_fib_init - initialise a fib
207 * @fibptr: The fib to initialize
209 * Set up the generic fib fields ready for use
212 void aac_fib_init(struct fib
*fibptr
)
214 struct hw_fib
*hw_fib
= fibptr
->hw_fib_va
;
216 hw_fib
->header
.StructType
= FIB_MAGIC
;
217 hw_fib
->header
.Size
= cpu_to_le16(fibptr
->dev
->max_fib_size
);
218 hw_fib
->header
.XferState
= cpu_to_le32(HostOwned
| FibInitialized
| FibEmpty
| FastResponseCapable
);
219 hw_fib
->header
.SenderFibAddress
= 0; /* Filled in later if needed */
220 hw_fib
->header
.ReceiverFibAddress
= cpu_to_le32(fibptr
->hw_fib_pa
);
221 hw_fib
->header
.SenderSize
= cpu_to_le16(fibptr
->dev
->max_fib_size
);
225 * fib_deallocate - deallocate a fib
226 * @fibptr: fib to deallocate
228 * Will deallocate and return to the free pool the FIB pointed to by the
232 static void fib_dealloc(struct fib
* fibptr
)
234 struct hw_fib
*hw_fib
= fibptr
->hw_fib_va
;
235 BUG_ON(hw_fib
->header
.StructType
!= FIB_MAGIC
);
236 hw_fib
->header
.XferState
= 0;
240 * Commuication primitives define and support the queuing method we use to
241 * support host to adapter commuication. All queue accesses happen through
242 * these routines and are the only routines which have a knowledge of the
243 * how these queues are implemented.
247 * aac_get_entry - get a queue entry
250 * @entry: Entry return
251 * @index: Index return
252 * @nonotify: notification control
254 * With a priority the routine returns a queue entry if the queue has free entries. If the queue
255 * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
259 static int aac_get_entry (struct aac_dev
* dev
, u32 qid
, struct aac_entry
**entry
, u32
* index
, unsigned long *nonotify
)
261 struct aac_queue
* q
;
265 * All of the queues wrap when they reach the end, so we check
266 * to see if they have reached the end and if they have we just
267 * set the index back to zero. This is a wrap. You could or off
268 * the high bits in all updates but this is a bit faster I think.
271 q
= &dev
->queues
->queue
[qid
];
273 idx
= *index
= le32_to_cpu(*(q
->headers
.producer
));
274 /* Interrupt Moderation, only interrupt for first two entries */
275 if (idx
!= le32_to_cpu(*(q
->headers
.consumer
))) {
277 if (qid
== AdapNormCmdQueue
)
278 idx
= ADAP_NORM_CMD_ENTRIES
;
280 idx
= ADAP_NORM_RESP_ENTRIES
;
282 if (idx
!= le32_to_cpu(*(q
->headers
.consumer
)))
286 if (qid
== AdapNormCmdQueue
) {
287 if (*index
>= ADAP_NORM_CMD_ENTRIES
)
288 *index
= 0; /* Wrap to front of the Producer Queue. */
290 if (*index
>= ADAP_NORM_RESP_ENTRIES
)
291 *index
= 0; /* Wrap to front of the Producer Queue. */
294 if ((*index
+ 1) == le32_to_cpu(*(q
->headers
.consumer
))) { /* Queue is full */
295 printk(KERN_WARNING
"Queue %d full, %u outstanding.\n",
299 *entry
= q
->base
+ *index
;
305 * aac_queue_get - get the next free QE
307 * @index: Returned index
308 * @priority: Priority of fib
309 * @fib: Fib to associate with the queue entry
310 * @wait: Wait if queue full
311 * @fibptr: Driver fib object to go with fib
312 * @nonotify: Don't notify the adapter
314 * Gets the next free QE off the requested priorty adapter command
315 * queue and associates the Fib with the QE. The QE represented by
316 * index is ready to insert on the queue when this routine returns
320 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
)
322 struct aac_entry
* entry
= NULL
;
325 if (qid
== AdapNormCmdQueue
) {
326 /* if no entries wait for some if caller wants to */
327 while (!aac_get_entry(dev
, qid
, &entry
, index
, nonotify
))
329 printk(KERN_ERR
"GetEntries failed\n");
332 * Setup queue entry with a command, status and fib mapped
334 entry
->size
= cpu_to_le32(le16_to_cpu(hw_fib
->header
.Size
));
337 while(!aac_get_entry(dev
, qid
, &entry
, index
, nonotify
))
339 /* if no entries wait for some if caller wants to */
342 * Setup queue entry with command, status and fib mapped
344 entry
->size
= cpu_to_le32(le16_to_cpu(hw_fib
->header
.Size
));
345 entry
->addr
= hw_fib
->header
.SenderFibAddress
;
346 /* Restore adapters pointer to the FIB */
347 hw_fib
->header
.ReceiverFibAddress
= hw_fib
->header
.SenderFibAddress
; /* Let the adapter now where to find its data */
351 * If MapFib is true than we need to map the Fib and put pointers
352 * in the queue entry.
355 entry
->addr
= cpu_to_le32(fibptr
->hw_fib_pa
);
360 * Define the highest level of host to adapter communication routines.
361 * These routines will support host to adapter FS commuication. These
362 * routines have no knowledge of the commuication method used. This level
363 * sends and receives FIBs. This level has no knowledge of how these FIBs
364 * get passed back and forth.
368 * aac_fib_send - send a fib to the adapter
369 * @command: Command to send
371 * @size: Size of fib data area
372 * @priority: Priority of Fib
373 * @wait: Async/sync select
374 * @reply: True if a reply is wanted
375 * @callback: Called with reply
376 * @callback_data: Passed to callback
378 * Sends the requested FIB to the adapter and optionally will wait for a
379 * response FIB. If the caller does not wish to wait for a response than
380 * an event to wait on must be supplied. This event will be set when a
381 * response FIB is received from the adapter.
384 int aac_fib_send(u16 command
, struct fib
*fibptr
, unsigned long size
,
385 int priority
, int wait
, int reply
, fib_callback callback
,
388 struct aac_dev
* dev
= fibptr
->dev
;
389 struct hw_fib
* hw_fib
= fibptr
->hw_fib_va
;
390 unsigned long flags
= 0;
391 unsigned long qflags
;
393 if (!(hw_fib
->header
.XferState
& cpu_to_le32(HostOwned
)))
396 * There are 5 cases with the wait and reponse requested flags.
397 * The only invalid cases are if the caller requests to wait and
398 * does not request a response and if the caller does not want a
399 * response and the Fib is not allocated from pool. If a response
400 * is not requesed the Fib will just be deallocaed by the DPC
401 * routine when the response comes back from the adapter. No
402 * further processing will be done besides deleting the Fib. We
403 * will have a debug mode where the adapter can notify the host
404 * it had a problem and the host can log that fact.
407 if (wait
&& !reply
) {
409 } else if (!wait
&& reply
) {
410 hw_fib
->header
.XferState
|= cpu_to_le32(Async
| ResponseExpected
);
411 FIB_COUNTER_INCREMENT(aac_config
.AsyncSent
);
412 } else if (!wait
&& !reply
) {
413 hw_fib
->header
.XferState
|= cpu_to_le32(NoResponseExpected
);
414 FIB_COUNTER_INCREMENT(aac_config
.NoResponseSent
);
415 } else if (wait
&& reply
) {
416 hw_fib
->header
.XferState
|= cpu_to_le32(ResponseExpected
);
417 FIB_COUNTER_INCREMENT(aac_config
.NormalSent
);
420 * Map the fib into 32bits by using the fib number
423 hw_fib
->header
.SenderFibAddress
= cpu_to_le32(((u32
)(fibptr
- dev
->fibs
)) << 2);
424 hw_fib
->header
.SenderData
= (u32
)(fibptr
- dev
->fibs
);
426 * Set FIB state to indicate where it came from and if we want a
427 * response from the adapter. Also load the command from the
430 * Map the hw fib pointer as a 32bit value
432 hw_fib
->header
.Command
= cpu_to_le16(command
);
433 hw_fib
->header
.XferState
|= cpu_to_le32(SentFromHost
);
434 fibptr
->hw_fib_va
->header
.Flags
= 0; /* 0 the flags field - internal only*/
436 * Set the size of the Fib we want to send to the adapter
438 hw_fib
->header
.Size
= cpu_to_le16(sizeof(struct aac_fibhdr
) + size
);
439 if (le16_to_cpu(hw_fib
->header
.Size
) > le16_to_cpu(hw_fib
->header
.SenderSize
)) {
443 * Get a queue entry connect the FIB to it and send an notify
444 * the adapter a command is ready.
446 hw_fib
->header
.XferState
|= cpu_to_le32(NormalPriority
);
449 * Fill in the Callback and CallbackContext if we are not
453 fibptr
->callback
= callback
;
454 fibptr
->callback_data
= callback_data
;
455 fibptr
->flags
= FIB_CONTEXT_FLAG
;
460 FIB_COUNTER_INCREMENT(aac_config
.FibsSent
);
462 dprintk((KERN_DEBUG
"Fib contents:.\n"));
463 dprintk((KERN_DEBUG
" Command = %d.\n", le32_to_cpu(hw_fib
->header
.Command
)));
464 dprintk((KERN_DEBUG
" SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount
*)fib_data(fibptr
))->command
)));
465 dprintk((KERN_DEBUG
" XferState = %x.\n", le32_to_cpu(hw_fib
->header
.XferState
)));
466 dprintk((KERN_DEBUG
" hw_fib va being sent=%p\n",fibptr
->hw_fib_va
));
467 dprintk((KERN_DEBUG
" hw_fib pa being sent=%lx\n",(ulong
)fibptr
->hw_fib_pa
));
468 dprintk((KERN_DEBUG
" fib being sent=%p\n",fibptr
));
474 spin_lock_irqsave(&fibptr
->event_lock
, flags
);
475 aac_adapter_deliver(fibptr
);
478 * If the caller wanted us to wait for response wait now.
482 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
483 /* Only set for first known interruptable command */
486 * *VERY* Dangerous to time out a command, the
487 * assumption is made that we have no hope of
488 * functioning because an interrupt routing or other
489 * hardware failure has occurred.
491 unsigned long count
= 36000000L; /* 3 minutes */
492 while (down_trylock(&fibptr
->event_wait
)) {
495 struct aac_queue
* q
= &dev
->queues
->queue
[AdapNormCmdQueue
];
496 spin_lock_irqsave(q
->lock
, qflags
);
498 spin_unlock_irqrestore(q
->lock
, qflags
);
500 printk(KERN_ERR
"aacraid: aac_fib_send: first asynchronous command timed out.\n"
501 "Usually a result of a PCI interrupt routing problem;\n"
502 "update mother board BIOS or consider utilizing one of\n"
503 "the SAFE mode kernel options (acpi, apic etc)\n");
507 if ((blink
= aac_adapter_check_health(dev
)) > 0) {
509 printk(KERN_ERR
"aacraid: aac_fib_send: adapter blinkLED 0x%x.\n"
510 "Usually a result of a serious unrecoverable hardware problem\n",
518 (void)down_interruptible(&fibptr
->event_wait
);
519 spin_lock_irqsave(&fibptr
->event_lock
, flags
);
520 if (fibptr
->done
== 0) {
521 fibptr
->done
= 2; /* Tell interrupt we aborted */
522 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
525 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
526 BUG_ON(fibptr
->done
== 0);
528 if(unlikely(fibptr
->flags
& FIB_CONTEXT_FLAG_TIMED_OUT
))
533 * If the user does not want a response than return success otherwise
543 * aac_consumer_get - get the top of the queue
546 * @entry: Return entry
548 * Will return a pointer to the entry on the top of the queue requested that
549 * we are a consumer of, and return the address of the queue entry. It does
550 * not change the state of the queue.
553 int aac_consumer_get(struct aac_dev
* dev
, struct aac_queue
* q
, struct aac_entry
**entry
)
557 if (le32_to_cpu(*q
->headers
.producer
) == le32_to_cpu(*q
->headers
.consumer
)) {
561 * The consumer index must be wrapped if we have reached
562 * the end of the queue, else we just use the entry
563 * pointed to by the header index
565 if (le32_to_cpu(*q
->headers
.consumer
) >= q
->entries
)
568 index
= le32_to_cpu(*q
->headers
.consumer
);
569 *entry
= q
->base
+ index
;
576 * aac_consumer_free - free consumer entry
581 * Frees up the current top of the queue we are a consumer of. If the
582 * queue was full notify the producer that the queue is no longer full.
585 void aac_consumer_free(struct aac_dev
* dev
, struct aac_queue
*q
, u32 qid
)
590 if ((le32_to_cpu(*q
->headers
.producer
)+1) == le32_to_cpu(*q
->headers
.consumer
))
593 if (le32_to_cpu(*q
->headers
.consumer
) >= q
->entries
)
594 *q
->headers
.consumer
= cpu_to_le32(1);
596 *q
->headers
.consumer
= cpu_to_le32(le32_to_cpu(*q
->headers
.consumer
)+1);
601 case HostNormCmdQueue
:
602 notify
= HostNormCmdNotFull
;
604 case HostNormRespQueue
:
605 notify
= HostNormRespNotFull
;
611 aac_adapter_notify(dev
, notify
);
616 * aac_fib_adapter_complete - complete adapter issued fib
617 * @fibptr: fib to complete
620 * Will do all necessary work to complete a FIB that was sent from
624 int aac_fib_adapter_complete(struct fib
*fibptr
, unsigned short size
)
626 struct hw_fib
* hw_fib
= fibptr
->hw_fib_va
;
627 struct aac_dev
* dev
= fibptr
->dev
;
628 struct aac_queue
* q
;
629 unsigned long nointr
= 0;
630 unsigned long qflags
;
632 if (hw_fib
->header
.XferState
== 0) {
633 if (dev
->comm_interface
== AAC_COMM_MESSAGE
)
638 * If we plan to do anything check the structure type first.
640 if ( hw_fib
->header
.StructType
!= FIB_MAGIC
) {
641 if (dev
->comm_interface
== AAC_COMM_MESSAGE
)
646 * This block handles the case where the adapter had sent us a
647 * command and we have finished processing the command. We
648 * call completeFib when we are done processing the command
649 * and want to send a response back to the adapter. This will
650 * send the completed cdb to the adapter.
652 if (hw_fib
->header
.XferState
& cpu_to_le32(SentFromAdapter
)) {
653 if (dev
->comm_interface
== AAC_COMM_MESSAGE
) {
657 hw_fib
->header
.XferState
|= cpu_to_le32(HostProcessed
);
659 size
+= sizeof(struct aac_fibhdr
);
660 if (size
> le16_to_cpu(hw_fib
->header
.SenderSize
))
662 hw_fib
->header
.Size
= cpu_to_le16(size
);
664 q
= &dev
->queues
->queue
[AdapNormRespQueue
];
665 spin_lock_irqsave(q
->lock
, qflags
);
666 aac_queue_get(dev
, &index
, AdapNormRespQueue
, hw_fib
, 1, NULL
, &nointr
);
667 *(q
->headers
.producer
) = cpu_to_le32(index
+ 1);
668 spin_unlock_irqrestore(q
->lock
, qflags
);
669 if (!(nointr
& (int)aac_config
.irq_mod
))
670 aac_adapter_notify(dev
, AdapNormRespQueue
);
675 printk(KERN_WARNING
"aac_fib_adapter_complete: Unknown xferstate detected.\n");
682 * aac_fib_complete - fib completion handler
683 * @fib: FIB to complete
685 * Will do all necessary work to complete a FIB.
688 int aac_fib_complete(struct fib
*fibptr
)
690 struct hw_fib
* hw_fib
= fibptr
->hw_fib_va
;
693 * Check for a fib which has already been completed
696 if (hw_fib
->header
.XferState
== 0)
699 * If we plan to do anything check the structure type first.
702 if (hw_fib
->header
.StructType
!= FIB_MAGIC
)
705 * This block completes a cdb which orginated on the host and we
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.
710 if((hw_fib
->header
.XferState
& cpu_to_le32(SentFromHost
)) &&
711 (hw_fib
->header
.XferState
& cpu_to_le32(AdapterProcessed
)))
715 else if(hw_fib
->header
.XferState
& cpu_to_le32(SentFromHost
))
718 * This handles the case when the host has aborted the I/O
719 * to the adapter because the adapter is not responding
722 } else if(hw_fib
->header
.XferState
& cpu_to_le32(HostOwned
)) {
731 * aac_printf - handle printf from firmware
735 * Print a message passed to us by the controller firmware on the
739 void aac_printf(struct aac_dev
*dev
, u32 val
)
741 char *cp
= dev
->printfbuf
;
742 if (dev
->printf_enabled
)
744 int length
= val
& 0xffff;
745 int level
= (val
>> 16) & 0xffff;
748 * The size of the printfbuf is set in port.c
749 * There is no variable or define for it
755 if (level
== LOG_AAC_HIGH_ERROR
)
756 printk(KERN_WARNING
"%s:%s", dev
->name
, cp
);
758 printk(KERN_INFO
"%s:%s", dev
->name
, cp
);
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
769 * This routine handles a driver notify fib from the adapter and
770 * dispatches it to the appropriate routine for handling.
773 #define AIF_SNIFF_TIMEOUT (30*HZ)
774 static void aac_handle_aif(struct aac_dev
* dev
, struct fib
* fibptr
)
776 struct hw_fib
* hw_fib
= fibptr
->hw_fib_va
;
777 struct aac_aifcmd
* aifcmd
= (struct aac_aifcmd
*)hw_fib
->data
;
778 u32 channel
, id
, lun
, container
;
779 struct scsi_device
*device
;
785 } device_config_needed
= NOTHING
;
787 /* Sniff for container changes */
789 if (!dev
|| !dev
->fsa_dev
)
791 container
= channel
= id
= lun
= (u32
)-1;
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.
799 switch (le32_to_cpu(aifcmd
->command
)) {
800 case AifCmdDriverNotify
:
801 switch (le32_to_cpu(((__le32
*)aifcmd
->data
)[0])) {
803 * Morph or Expand complete
805 case AifDenMorphComplete
:
806 case AifDenVolumeExtendComplete
:
807 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
808 if (container
>= dev
->maximum_num_containers
)
812 * Find the scsi_device associated with the SCSI
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.
818 if ((dev
!= NULL
) && (dev
->scsi_host_ptr
!= NULL
)) {
819 device
= scsi_device_lookup(dev
->scsi_host_ptr
,
820 CONTAINER_TO_CHANNEL(container
),
821 CONTAINER_TO_ID(container
),
822 CONTAINER_TO_LUN(container
));
824 dev
->fsa_dev
[container
].config_needed
= CHANGE
;
825 dev
->fsa_dev
[container
].config_waiting_on
= AifEnConfigChange
;
826 dev
->fsa_dev
[container
].config_waiting_stamp
= jiffies
;
827 scsi_device_put(device
);
833 * If we are waiting on something and this happens to be
834 * that thing then set the re-configure flag.
836 if (container
!= (u32
)-1) {
837 if (container
>= dev
->maximum_num_containers
)
839 if ((dev
->fsa_dev
[container
].config_waiting_on
==
840 le32_to_cpu(*(__le32
*)aifcmd
->data
)) &&
841 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
842 dev
->fsa_dev
[container
].config_waiting_on
= 0;
843 } else for (container
= 0;
844 container
< dev
->maximum_num_containers
; ++container
) {
845 if ((dev
->fsa_dev
[container
].config_waiting_on
==
846 le32_to_cpu(*(__le32
*)aifcmd
->data
)) &&
847 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
848 dev
->fsa_dev
[container
].config_waiting_on
= 0;
852 case AifCmdEventNotify
:
853 switch (le32_to_cpu(((__le32
*)aifcmd
->data
)[0])) {
854 case AifEnBatteryEvent
:
855 dev
->cache_protected
=
856 (((__le32
*)aifcmd
->data
)[1] == cpu_to_le32(3));
861 case AifEnAddContainer
:
862 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
863 if (container
>= dev
->maximum_num_containers
)
865 dev
->fsa_dev
[container
].config_needed
= ADD
;
866 dev
->fsa_dev
[container
].config_waiting_on
=
868 dev
->fsa_dev
[container
].config_waiting_stamp
= jiffies
;
874 case AifEnDeleteContainer
:
875 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
876 if (container
>= dev
->maximum_num_containers
)
878 dev
->fsa_dev
[container
].config_needed
= DELETE
;
879 dev
->fsa_dev
[container
].config_waiting_on
=
881 dev
->fsa_dev
[container
].config_waiting_stamp
= jiffies
;
885 * Container change detected. If we currently are not
886 * waiting on something else, setup to wait on a Config Change.
888 case AifEnContainerChange
:
889 container
= le32_to_cpu(((__le32
*)aifcmd
->data
)[1]);
890 if (container
>= dev
->maximum_num_containers
)
892 if (dev
->fsa_dev
[container
].config_waiting_on
&&
893 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
895 dev
->fsa_dev
[container
].config_needed
= CHANGE
;
896 dev
->fsa_dev
[container
].config_waiting_on
=
898 dev
->fsa_dev
[container
].config_waiting_stamp
= jiffies
;
901 case AifEnConfigChange
:
904 case AifEnEnclosureManagement
:
905 switch (le32_to_cpu(((__le32
*)aifcmd
->data
)[3])) {
906 case EM_DRIVE_INSERTION
:
907 case EM_DRIVE_REMOVAL
:
908 container
= le32_to_cpu(
909 ((__le32
*)aifcmd
->data
)[2]);
910 if ((container
>> 28))
912 channel
= (container
>> 24) & 0xF;
913 if (channel
>= dev
->maximum_num_channels
)
915 id
= container
& 0xFFFF;
916 lun
= (container
>> 16) & 0xFF;
917 if (id
>= dev
->maximum_num_physicals
) {
919 if ((0x2000 <= id
) || lun
|| channel
||
920 ((channel
= (id
>> 7) & 0x3F) >=
921 dev
->maximum_num_channels
))
926 channel
= aac_phys_to_logical(channel
);
927 device_config_needed
=
928 (((__le32
*)aifcmd
->data
)[3]
929 == cpu_to_le32(EM_DRIVE_INSERTION
)) ?
937 * If we are waiting on something and this happens to be
938 * that thing then set the re-configure flag.
940 if (container
!= (u32
)-1) {
941 if (container
>= dev
->maximum_num_containers
)
943 if ((dev
->fsa_dev
[container
].config_waiting_on
==
944 le32_to_cpu(*(__le32
*)aifcmd
->data
)) &&
945 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
946 dev
->fsa_dev
[container
].config_waiting_on
= 0;
947 } else for (container
= 0;
948 container
< dev
->maximum_num_containers
; ++container
) {
949 if ((dev
->fsa_dev
[container
].config_waiting_on
==
950 le32_to_cpu(*(__le32
*)aifcmd
->data
)) &&
951 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
))
952 dev
->fsa_dev
[container
].config_waiting_on
= 0;
956 case AifCmdJobProgress
:
958 * These are job progress AIF's. When a Clear is being
959 * done on a container it is initially created then hidden from
960 * the OS. When the clear completes we don't get a config
961 * change so we monitor the job status complete on a clear then
962 * wait for a container change.
965 if (((__le32
*)aifcmd
->data
)[1] == cpu_to_le32(AifJobCtrZero
) &&
966 (((__le32
*)aifcmd
->data
)[6] == ((__le32
*)aifcmd
->data
)[5] ||
967 ((__le32
*)aifcmd
->data
)[4] == cpu_to_le32(AifJobStsSuccess
))) {
969 container
< dev
->maximum_num_containers
;
972 * Stomp on all config sequencing for all
975 dev
->fsa_dev
[container
].config_waiting_on
=
976 AifEnContainerChange
;
977 dev
->fsa_dev
[container
].config_needed
= ADD
;
978 dev
->fsa_dev
[container
].config_waiting_stamp
=
982 if (((__le32
*)aifcmd
->data
)[1] == cpu_to_le32(AifJobCtrZero
) &&
983 ((__le32
*)aifcmd
->data
)[6] == 0 &&
984 ((__le32
*)aifcmd
->data
)[4] == cpu_to_le32(AifJobStsRunning
)) {
986 container
< dev
->maximum_num_containers
;
989 * Stomp on all config sequencing for all
992 dev
->fsa_dev
[container
].config_waiting_on
=
993 AifEnContainerChange
;
994 dev
->fsa_dev
[container
].config_needed
= DELETE
;
995 dev
->fsa_dev
[container
].config_waiting_stamp
=
1002 if (device_config_needed
== NOTHING
)
1003 for (container
= 0; container
< dev
->maximum_num_containers
;
1005 if ((dev
->fsa_dev
[container
].config_waiting_on
== 0) &&
1006 (dev
->fsa_dev
[container
].config_needed
!= NOTHING
) &&
1007 time_before(jiffies
, dev
->fsa_dev
[container
].config_waiting_stamp
+ AIF_SNIFF_TIMEOUT
)) {
1008 device_config_needed
=
1009 dev
->fsa_dev
[container
].config_needed
;
1010 dev
->fsa_dev
[container
].config_needed
= NOTHING
;
1011 channel
= CONTAINER_TO_CHANNEL(container
);
1012 id
= CONTAINER_TO_ID(container
);
1013 lun
= CONTAINER_TO_LUN(container
);
1017 if (device_config_needed
== NOTHING
)
1021 * If we decided that a re-configuration needs to be done,
1022 * schedule it here on the way out the door, please close the door
1027 * Find the scsi_device associated with the SCSI address,
1028 * and mark it as changed, invalidating the cache. This deals
1029 * with changes to existing device IDs.
1032 if (!dev
|| !dev
->scsi_host_ptr
)
1035 * force reload of disk info via aac_probe_container
1037 if ((channel
== CONTAINER_CHANNEL
) &&
1038 (device_config_needed
!= NOTHING
)) {
1039 if (dev
->fsa_dev
[container
].valid
== 1)
1040 dev
->fsa_dev
[container
].valid
= 2;
1041 aac_probe_container(dev
, container
);
1043 device
= scsi_device_lookup(dev
->scsi_host_ptr
, channel
, id
, lun
);
1045 switch (device_config_needed
) {
1047 if (scsi_device_online(device
)) {
1048 scsi_device_set_state(device
, SDEV_OFFLINE
);
1049 sdev_printk(KERN_INFO
, device
,
1050 "Device offlined - %s\n",
1051 (channel
== CONTAINER_CHANNEL
) ?
1053 "enclosure services event");
1057 if (!scsi_device_online(device
)) {
1058 sdev_printk(KERN_INFO
, device
,
1059 "Device online - %s\n",
1060 (channel
== CONTAINER_CHANNEL
) ?
1062 "enclosure services event");
1063 scsi_device_set_state(device
, SDEV_RUNNING
);
1067 if ((channel
== CONTAINER_CHANNEL
)
1068 && (!dev
->fsa_dev
[container
].valid
)) {
1069 if (!scsi_device_online(device
))
1071 scsi_device_set_state(device
, SDEV_OFFLINE
);
1072 sdev_printk(KERN_INFO
, device
,
1073 "Device offlined - %s\n",
1077 scsi_rescan_device(&device
->sdev_gendev
);
1082 scsi_device_put(device
);
1083 device_config_needed
= NOTHING
;
1085 if (device_config_needed
== ADD
)
1086 scsi_add_device(dev
->scsi_host_ptr
, channel
, id
, lun
);
1089 static int _aac_reset_adapter(struct aac_dev
*aac
, int forced
)
1093 struct Scsi_Host
*host
;
1094 struct scsi_device
*dev
;
1095 struct scsi_cmnd
*command
;
1096 struct scsi_cmnd
*command_list
;
1101 * - host is locked, unless called by the aacraid thread.
1102 * (a matter of convenience, due to legacy issues surrounding
1103 * eh_host_adapter_reset).
1104 * - in_reset is asserted, so no new i/o is getting to the
1106 * - The card is dead, or will be very shortly ;-/ so no new
1107 * commands are completing in the interrupt service.
1109 host
= aac
->scsi_host_ptr
;
1110 scsi_block_requests(host
);
1111 aac_adapter_disable_int(aac
);
1112 if (aac
->thread
->pid
!= current
->pid
) {
1113 spin_unlock_irq(host
->host_lock
);
1114 kthread_stop(aac
->thread
);
1119 * If a positive health, means in a known DEAD PANIC
1120 * state and the adapter could be reset to `try again'.
1122 retval
= aac_adapter_restart(aac
, forced
? 0 : aac_adapter_check_health(aac
));
1128 * Loop through the fibs, close the synchronous FIBS
1130 for (retval
= 1, index
= 0; index
< (aac
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
); index
++) {
1131 struct fib
*fib
= &aac
->fibs
[index
];
1132 if (!(fib
->hw_fib_va
->header
.XferState
& cpu_to_le32(NoResponseExpected
| Async
)) &&
1133 (fib
->hw_fib_va
->header
.XferState
& cpu_to_le32(ResponseExpected
))) {
1134 unsigned long flagv
;
1135 spin_lock_irqsave(&fib
->event_lock
, flagv
);
1136 up(&fib
->event_wait
);
1137 spin_unlock_irqrestore(&fib
->event_lock
, flagv
);
1142 /* Give some extra time for ioctls to complete. */
1145 index
= aac
->cardtype
;
1148 * Re-initialize the adapter, first free resources, then carefully
1149 * apply the initialization sequence to come back again. Only risk
1150 * is a change in Firmware dropping cache, it is assumed the caller
1151 * will ensure that i/o is queisced and the card is flushed in that
1154 aac_fib_map_free(aac
);
1155 pci_free_consistent(aac
->pdev
, aac
->comm_size
, aac
->comm_addr
, aac
->comm_phys
);
1156 aac
->comm_addr
= NULL
;
1160 free_irq(aac
->pdev
->irq
, aac
);
1161 kfree(aac
->fsa_dev
);
1162 aac
->fsa_dev
= NULL
;
1163 quirks
= aac_get_driver_ident(index
)->quirks
;
1164 if (quirks
& AAC_QUIRK_31BIT
) {
1165 if (((retval
= pci_set_dma_mask(aac
->pdev
, DMA_31BIT_MASK
))) ||
1166 ((retval
= pci_set_consistent_dma_mask(aac
->pdev
, DMA_31BIT_MASK
))))
1169 if (((retval
= pci_set_dma_mask(aac
->pdev
, DMA_32BIT_MASK
))) ||
1170 ((retval
= pci_set_consistent_dma_mask(aac
->pdev
, DMA_32BIT_MASK
))))
1173 if ((retval
= (*(aac_get_driver_ident(index
)->init
))(aac
)))
1175 if (quirks
& AAC_QUIRK_31BIT
)
1176 if ((retval
= pci_set_dma_mask(aac
->pdev
, DMA_32BIT_MASK
)))
1179 aac
->thread
= kthread_run(aac_command_thread
, aac
, aac
->name
);
1180 if (IS_ERR(aac
->thread
)) {
1181 retval
= PTR_ERR(aac
->thread
);
1185 (void)aac_get_adapter_info(aac
);
1186 if ((quirks
& AAC_QUIRK_34SG
) && (host
->sg_tablesize
> 34)) {
1187 host
->sg_tablesize
= 34;
1188 host
->max_sectors
= (host
->sg_tablesize
* 8) + 112;
1190 if ((quirks
& AAC_QUIRK_17SG
) && (host
->sg_tablesize
> 17)) {
1191 host
->sg_tablesize
= 17;
1192 host
->max_sectors
= (host
->sg_tablesize
* 8) + 112;
1194 aac_get_config_status(aac
, 1);
1195 aac_get_containers(aac
);
1197 * This is where the assumption that the Adapter is quiesced
1200 command_list
= NULL
;
1201 __shost_for_each_device(dev
, host
) {
1202 unsigned long flags
;
1203 spin_lock_irqsave(&dev
->list_lock
, flags
);
1204 list_for_each_entry(command
, &dev
->cmd_list
, list
)
1205 if (command
->SCp
.phase
== AAC_OWNER_FIRMWARE
) {
1206 command
->SCp
.buffer
= (struct scatterlist
*)command_list
;
1207 command_list
= command
;
1209 spin_unlock_irqrestore(&dev
->list_lock
, flags
);
1211 while ((command
= command_list
)) {
1212 command_list
= (struct scsi_cmnd
*)command
->SCp
.buffer
;
1213 command
->SCp
.buffer
= NULL
;
1214 command
->result
= DID_OK
<< 16
1215 | COMMAND_COMPLETE
<< 8
1216 | SAM_STAT_TASK_SET_FULL
;
1217 command
->SCp
.phase
= AAC_OWNER_ERROR_HANDLER
;
1218 command
->scsi_done(command
);
1224 scsi_unblock_requests(host
);
1226 spin_lock_irq(host
->host_lock
);
1231 int aac_reset_adapter(struct aac_dev
* aac
, int forced
)
1233 unsigned long flagv
= 0;
1235 struct Scsi_Host
* host
;
1237 if (spin_trylock_irqsave(&aac
->fib_lock
, flagv
) == 0)
1240 if (aac
->in_reset
) {
1241 spin_unlock_irqrestore(&aac
->fib_lock
, flagv
);
1245 spin_unlock_irqrestore(&aac
->fib_lock
, flagv
);
1248 * Wait for all commands to complete to this specific
1249 * target (block maximum 60 seconds). Although not necessary,
1250 * it does make us a good storage citizen.
1252 host
= aac
->scsi_host_ptr
;
1253 scsi_block_requests(host
);
1254 if (forced
< 2) for (retval
= 60; retval
; --retval
) {
1255 struct scsi_device
* dev
;
1256 struct scsi_cmnd
* command
;
1259 __shost_for_each_device(dev
, host
) {
1260 spin_lock_irqsave(&dev
->list_lock
, flagv
);
1261 list_for_each_entry(command
, &dev
->cmd_list
, list
) {
1262 if (command
->SCp
.phase
== AAC_OWNER_FIRMWARE
) {
1267 spin_unlock_irqrestore(&dev
->list_lock
, flagv
);
1273 * We can exit If all the commands are complete
1280 /* Quiesce build, flush cache, write through mode */
1282 aac_send_shutdown(aac
);
1283 spin_lock_irqsave(host
->host_lock
, flagv
);
1284 retval
= _aac_reset_adapter(aac
, forced
? forced
: ((aac_check_reset
!= 0) && (aac_check_reset
!= 1)));
1285 spin_unlock_irqrestore(host
->host_lock
, flagv
);
1287 if ((forced
< 2) && (retval
== -ENODEV
)) {
1288 /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */
1289 struct fib
* fibctx
= aac_fib_alloc(aac
);
1291 struct aac_pause
*cmd
;
1294 aac_fib_init(fibctx
);
1296 cmd
= (struct aac_pause
*) fib_data(fibctx
);
1298 cmd
->command
= cpu_to_le32(VM_ContainerConfig
);
1299 cmd
->type
= cpu_to_le32(CT_PAUSE_IO
);
1300 cmd
->timeout
= cpu_to_le32(1);
1301 cmd
->min
= cpu_to_le32(1);
1302 cmd
->noRescan
= cpu_to_le32(1);
1303 cmd
->count
= cpu_to_le32(0);
1305 status
= aac_fib_send(ContainerCommand
,
1307 sizeof(struct aac_pause
),
1309 -2 /* Timeout silently */, 1,
1313 aac_fib_complete(fibctx
);
1314 aac_fib_free(fibctx
);
1321 int aac_check_health(struct aac_dev
* aac
)
1324 unsigned long time_now
, flagv
= 0;
1325 struct list_head
* entry
;
1326 struct Scsi_Host
* host
;
1328 /* Extending the scope of fib_lock slightly to protect aac->in_reset */
1329 if (spin_trylock_irqsave(&aac
->fib_lock
, flagv
) == 0)
1332 if (aac
->in_reset
|| !(BlinkLED
= aac_adapter_check_health(aac
))) {
1333 spin_unlock_irqrestore(&aac
->fib_lock
, flagv
);
1340 * aac_aifcmd.command = AifCmdEventNotify = 1
1341 * aac_aifcmd.seqnum = 0xFFFFFFFF
1342 * aac_aifcmd.data[0] = AifEnExpEvent = 23
1343 * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3
1344 * aac.aifcmd.data[2] = AifHighPriority = 3
1345 * aac.aifcmd.data[3] = BlinkLED
1348 time_now
= jiffies
/HZ
;
1349 entry
= aac
->fib_list
.next
;
1352 * For each Context that is on the
1353 * fibctxList, make a copy of the
1354 * fib, and then set the event to wake up the
1355 * thread that is waiting for it.
1357 while (entry
!= &aac
->fib_list
) {
1359 * Extract the fibctx
1361 struct aac_fib_context
*fibctx
= list_entry(entry
, struct aac_fib_context
, next
);
1362 struct hw_fib
* hw_fib
;
1365 * Check if the queue is getting
1368 if (fibctx
->count
> 20) {
1370 * It's *not* jiffies folks,
1371 * but jiffies / HZ, so do not
1374 u32 time_last
= fibctx
->jiffies
;
1376 * Has it been > 2 minutes
1377 * since the last read off
1380 if ((time_now
- time_last
) > aif_timeout
) {
1381 entry
= entry
->next
;
1382 aac_close_fib_context(aac
, fibctx
);
1387 * Warning: no sleep allowed while
1390 hw_fib
= kzalloc(sizeof(struct hw_fib
), GFP_ATOMIC
);
1391 fib
= kzalloc(sizeof(struct fib
), GFP_ATOMIC
);
1392 if (fib
&& hw_fib
) {
1393 struct aac_aifcmd
* aif
;
1395 fib
->hw_fib_va
= hw_fib
;
1398 fib
->type
= FSAFS_NTC_FIB_CONTEXT
;
1399 fib
->size
= sizeof (struct fib
);
1400 fib
->data
= hw_fib
->data
;
1401 aif
= (struct aac_aifcmd
*)hw_fib
->data
;
1402 aif
->command
= cpu_to_le32(AifCmdEventNotify
);
1403 aif
->seqnum
= cpu_to_le32(0xFFFFFFFF);
1404 ((__le32
*)aif
->data
)[0] = cpu_to_le32(AifEnExpEvent
);
1405 ((__le32
*)aif
->data
)[1] = cpu_to_le32(AifExeFirmwarePanic
);
1406 ((__le32
*)aif
->data
)[2] = cpu_to_le32(AifHighPriority
);
1407 ((__le32
*)aif
->data
)[3] = cpu_to_le32(BlinkLED
);
1410 * Put the FIB onto the
1413 list_add_tail(&fib
->fiblink
, &fibctx
->fib_list
);
1416 * Set the event to wake up the
1417 * thread that will waiting.
1419 up(&fibctx
->wait_sem
);
1421 printk(KERN_WARNING
"aifd: didn't allocate NewFib.\n");
1425 entry
= entry
->next
;
1428 spin_unlock_irqrestore(&aac
->fib_lock
, flagv
);
1431 printk(KERN_ERR
"%s: Host adapter dead %d\n", aac
->name
, BlinkLED
);
1435 printk(KERN_ERR
"%s: Host adapter BLINK LED 0x%x\n", aac
->name
, BlinkLED
);
1437 if (!aac_check_reset
|| ((aac_check_reset
!= 1) &&
1438 (aac
->supplement_adapter_info
.SupportedOptions2
&
1439 AAC_OPTION_IGNORE_RESET
)))
1441 host
= aac
->scsi_host_ptr
;
1442 if (aac
->thread
->pid
!= current
->pid
)
1443 spin_lock_irqsave(host
->host_lock
, flagv
);
1444 BlinkLED
= _aac_reset_adapter(aac
, aac_check_reset
!= 1);
1445 if (aac
->thread
->pid
!= current
->pid
)
1446 spin_unlock_irqrestore(host
->host_lock
, flagv
);
1456 * aac_command_thread - command processing thread
1457 * @dev: Adapter to monitor
1459 * Waits on the commandready event in it's queue. When the event gets set
1460 * it will pull FIBs off it's queue. It will continue to pull FIBs off
1461 * until the queue is empty. When the queue is empty it will wait for
1465 int aac_command_thread(void *data
)
1467 struct aac_dev
*dev
= data
;
1468 struct hw_fib
*hw_fib
, *hw_newfib
;
1469 struct fib
*fib
, *newfib
;
1470 struct aac_fib_context
*fibctx
;
1471 unsigned long flags
;
1472 DECLARE_WAITQUEUE(wait
, current
);
1473 unsigned long next_jiffies
= jiffies
+ HZ
;
1474 unsigned long next_check_jiffies
= next_jiffies
;
1475 long difference
= HZ
;
1478 * We can only have one thread per adapter for AIF's.
1480 if (dev
->aif_thread
)
1484 * Let the DPC know it has a place to send the AIF's to.
1486 dev
->aif_thread
= 1;
1487 add_wait_queue(&dev
->queues
->queue
[HostNormCmdQueue
].cmdready
, &wait
);
1488 set_current_state(TASK_INTERRUPTIBLE
);
1489 dprintk ((KERN_INFO
"aac_command_thread start\n"));
1492 spin_lock_irqsave(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1493 while(!list_empty(&(dev
->queues
->queue
[HostNormCmdQueue
].cmdq
))) {
1494 struct list_head
*entry
;
1495 struct aac_aifcmd
* aifcmd
;
1497 set_current_state(TASK_RUNNING
);
1499 entry
= dev
->queues
->queue
[HostNormCmdQueue
].cmdq
.next
;
1502 spin_unlock_irqrestore(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1503 fib
= list_entry(entry
, struct fib
, fiblink
);
1505 * We will process the FIB here or pass it to a
1506 * worker thread that is TBD. We Really can't
1507 * do anything at this point since we don't have
1508 * anything defined for this thread to do.
1510 hw_fib
= fib
->hw_fib_va
;
1511 memset(fib
, 0, sizeof(struct fib
));
1512 fib
->type
= FSAFS_NTC_FIB_CONTEXT
;
1513 fib
->size
= sizeof( struct fib
);
1514 fib
->hw_fib_va
= hw_fib
;
1515 fib
->data
= hw_fib
->data
;
1518 * We only handle AifRequest fibs from the adapter.
1520 aifcmd
= (struct aac_aifcmd
*) hw_fib
->data
;
1521 if (aifcmd
->command
== cpu_to_le32(AifCmdDriverNotify
)) {
1522 /* Handle Driver Notify Events */
1523 aac_handle_aif(dev
, fib
);
1524 *(__le32
*)hw_fib
->data
= cpu_to_le32(ST_OK
);
1525 aac_fib_adapter_complete(fib
, (u16
)sizeof(u32
));
1527 /* The u32 here is important and intended. We are using
1528 32bit wrapping time to fit the adapter field */
1530 u32 time_now
, time_last
;
1531 unsigned long flagv
;
1533 struct hw_fib
** hw_fib_pool
, ** hw_fib_p
;
1534 struct fib
** fib_pool
, ** fib_p
;
1537 if ((aifcmd
->command
==
1538 cpu_to_le32(AifCmdEventNotify
)) ||
1540 cpu_to_le32(AifCmdJobProgress
))) {
1541 aac_handle_aif(dev
, fib
);
1544 time_now
= jiffies
/HZ
;
1547 * Warning: no sleep allowed while
1548 * holding spinlock. We take the estimate
1549 * and pre-allocate a set of fibs outside the
1552 num
= le32_to_cpu(dev
->init
->AdapterFibsSize
)
1553 / sizeof(struct hw_fib
); /* some extra */
1554 spin_lock_irqsave(&dev
->fib_lock
, flagv
);
1555 entry
= dev
->fib_list
.next
;
1556 while (entry
!= &dev
->fib_list
) {
1557 entry
= entry
->next
;
1560 spin_unlock_irqrestore(&dev
->fib_lock
, flagv
);
1564 && ((hw_fib_pool
= kmalloc(sizeof(struct hw_fib
*) * num
, GFP_KERNEL
)))
1565 && ((fib_pool
= kmalloc(sizeof(struct fib
*) * num
, GFP_KERNEL
)))) {
1566 hw_fib_p
= hw_fib_pool
;
1568 while (hw_fib_p
< &hw_fib_pool
[num
]) {
1569 if (!(*(hw_fib_p
++) = kmalloc(sizeof(struct hw_fib
), GFP_KERNEL
))) {
1573 if (!(*(fib_p
++) = kmalloc(sizeof(struct fib
), GFP_KERNEL
))) {
1574 kfree(*(--hw_fib_p
));
1578 if ((num
= hw_fib_p
- hw_fib_pool
) == 0) {
1588 spin_lock_irqsave(&dev
->fib_lock
, flagv
);
1589 entry
= dev
->fib_list
.next
;
1591 * For each Context that is on the
1592 * fibctxList, make a copy of the
1593 * fib, and then set the event to wake up the
1594 * thread that is waiting for it.
1596 hw_fib_p
= hw_fib_pool
;
1598 while (entry
!= &dev
->fib_list
) {
1600 * Extract the fibctx
1602 fibctx
= list_entry(entry
, struct aac_fib_context
, next
);
1604 * Check if the queue is getting
1607 if (fibctx
->count
> 20)
1610 * It's *not* jiffies folks,
1611 * but jiffies / HZ so do not
1614 time_last
= fibctx
->jiffies
;
1616 * Has it been > 2 minutes
1617 * since the last read off
1620 if ((time_now
- time_last
) > aif_timeout
) {
1621 entry
= entry
->next
;
1622 aac_close_fib_context(dev
, fibctx
);
1627 * Warning: no sleep allowed while
1630 if (hw_fib_p
< &hw_fib_pool
[num
]) {
1631 hw_newfib
= *hw_fib_p
;
1632 *(hw_fib_p
++) = NULL
;
1636 * Make the copy of the FIB
1638 memcpy(hw_newfib
, hw_fib
, sizeof(struct hw_fib
));
1639 memcpy(newfib
, fib
, sizeof(struct fib
));
1640 newfib
->hw_fib_va
= hw_newfib
;
1642 * Put the FIB onto the
1645 list_add_tail(&newfib
->fiblink
, &fibctx
->fib_list
);
1648 * Set the event to wake up the
1649 * thread that is waiting.
1651 up(&fibctx
->wait_sem
);
1653 printk(KERN_WARNING
"aifd: didn't allocate NewFib.\n");
1655 entry
= entry
->next
;
1658 * Set the status of this FIB
1660 *(__le32
*)hw_fib
->data
= cpu_to_le32(ST_OK
);
1661 aac_fib_adapter_complete(fib
, sizeof(u32
));
1662 spin_unlock_irqrestore(&dev
->fib_lock
, flagv
);
1663 /* Free up the remaining resources */
1664 hw_fib_p
= hw_fib_pool
;
1666 while (hw_fib_p
< &hw_fib_pool
[num
]) {
1676 spin_lock_irqsave(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1679 * There are no more AIF's
1681 spin_unlock_irqrestore(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1684 * Background activity
1686 if ((time_before(next_check_jiffies
,next_jiffies
))
1687 && ((difference
= next_check_jiffies
- jiffies
) <= 0)) {
1688 next_check_jiffies
= next_jiffies
;
1689 if (aac_check_health(dev
) == 0) {
1690 difference
= ((long)(unsigned)check_interval
)
1692 next_check_jiffies
= jiffies
+ difference
;
1693 } else if (!dev
->queues
)
1696 if (!time_before(next_check_jiffies
,next_jiffies
)
1697 && ((difference
= next_jiffies
- jiffies
) <= 0)) {
1701 /* Don't even try to talk to adapter if its sick */
1702 ret
= aac_check_health(dev
);
1703 if (!ret
&& !dev
->queues
)
1705 next_check_jiffies
= jiffies
1706 + ((long)(unsigned)check_interval
)
1708 do_gettimeofday(&now
);
1710 /* Synchronize our watches */
1711 if (((1000000 - (1000000 / HZ
)) > now
.tv_usec
)
1712 && (now
.tv_usec
> (1000000 / HZ
)))
1713 difference
= (((1000000 - now
.tv_usec
) * HZ
)
1714 + 500000) / 1000000;
1715 else if (ret
== 0) {
1718 if ((fibptr
= aac_fib_alloc(dev
))) {
1721 aac_fib_init(fibptr
);
1723 info
= (__le32
*) fib_data(fibptr
);
1724 if (now
.tv_usec
> 500000)
1727 *info
= cpu_to_le32(now
.tv_sec
);
1729 (void)aac_fib_send(SendHostTime
,
1736 aac_fib_complete(fibptr
);
1737 aac_fib_free(fibptr
);
1739 difference
= (long)(unsigned)update_interval
*HZ
;
1742 difference
= 10 * HZ
;
1744 next_jiffies
= jiffies
+ difference
;
1745 if (time_before(next_check_jiffies
,next_jiffies
))
1746 difference
= next_check_jiffies
- jiffies
;
1748 if (difference
<= 0)
1750 set_current_state(TASK_INTERRUPTIBLE
);
1751 schedule_timeout(difference
);
1753 if (kthread_should_stop())
1757 remove_wait_queue(&dev
->queues
->queue
[HostNormCmdQueue
].cmdready
, &wait
);
1758 dev
->aif_thread
= 0;