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 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 <scsi/scsi_host.h>
43 #include <scsi/scsi_device.h>
44 #include <asm/semaphore.h>
49 * fib_map_alloc - allocate the fib objects
50 * @dev: Adapter to allocate for
52 * Allocate and map the shared PCI space for the FIB blocks used to
53 * talk to the Adaptec firmware.
56 static int fib_map_alloc(struct aac_dev
*dev
)
59 "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n",
60 dev
->pdev
, dev
->max_fib_size
, dev
->scsi_host_ptr
->can_queue
,
61 AAC_NUM_MGT_FIB
, &dev
->hw_fib_pa
));
62 if((dev
->hw_fib_va
= pci_alloc_consistent(dev
->pdev
, dev
->max_fib_size
63 * (dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
),
64 &dev
->hw_fib_pa
))==NULL
)
70 * aac_fib_map_free - free the fib objects
71 * @dev: Adapter to free
73 * Free the PCI mappings and the memory allocated for FIB blocks
77 void aac_fib_map_free(struct aac_dev
*dev
)
79 pci_free_consistent(dev
->pdev
, dev
->max_fib_size
* (dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
), dev
->hw_fib_va
, dev
->hw_fib_pa
);
83 * aac_fib_setup - setup the fibs
84 * @dev: Adapter to set up
86 * Allocate the PCI space for the fibs, map it and then intialise the
87 * fib area, the unmapped fib data and also the free list
90 int aac_fib_setup(struct aac_dev
* dev
)
93 struct hw_fib
*hw_fib_va
;
97 while (((i
= fib_map_alloc(dev
)) == -ENOMEM
)
98 && (dev
->scsi_host_ptr
->can_queue
> (64 - AAC_NUM_MGT_FIB
))) {
99 dev
->init
->MaxIoCommands
= cpu_to_le32((dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
) >> 1);
100 dev
->scsi_host_ptr
->can_queue
= le32_to_cpu(dev
->init
->MaxIoCommands
) - AAC_NUM_MGT_FIB
;
105 hw_fib_va
= dev
->hw_fib_va
;
106 hw_fib_pa
= dev
->hw_fib_pa
;
107 memset(hw_fib_va
, 0, dev
->max_fib_size
* (dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
));
109 * Initialise the fibs
111 for (i
= 0, fibptr
= &dev
->fibs
[i
]; i
< (dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
); i
++, fibptr
++)
114 fibptr
->hw_fib
= hw_fib_va
;
115 fibptr
->data
= (void *) fibptr
->hw_fib
->data
;
116 fibptr
->next
= fibptr
+1; /* Forward chain the fibs */
117 init_MUTEX_LOCKED(&fibptr
->event_wait
);
118 spin_lock_init(&fibptr
->event_lock
);
119 hw_fib_va
->header
.XferState
= cpu_to_le32(0xffffffff);
120 hw_fib_va
->header
.SenderSize
= cpu_to_le16(dev
->max_fib_size
);
121 fibptr
->hw_fib_pa
= hw_fib_pa
;
122 hw_fib_va
= (struct hw_fib
*)((unsigned char *)hw_fib_va
+ dev
->max_fib_size
);
123 hw_fib_pa
= hw_fib_pa
+ dev
->max_fib_size
;
126 * Add the fib chain to the free list
128 dev
->fibs
[dev
->scsi_host_ptr
->can_queue
+ AAC_NUM_MGT_FIB
- 1].next
= NULL
;
130 * Enable this to debug out of queue space
132 dev
->free_fib
= &dev
->fibs
[0];
137 * aac_fib_alloc - allocate a fib
138 * @dev: Adapter to allocate the fib for
140 * Allocate a fib from the adapter fib pool. If the pool is empty we
144 struct fib
*aac_fib_alloc(struct aac_dev
*dev
)
148 spin_lock_irqsave(&dev
->fib_lock
, flags
);
149 fibptr
= dev
->free_fib
;
151 spin_unlock_irqrestore(&dev
->fib_lock
, flags
);
154 dev
->free_fib
= fibptr
->next
;
155 spin_unlock_irqrestore(&dev
->fib_lock
, flags
);
157 * Set the proper node type code and node byte size
159 fibptr
->type
= FSAFS_NTC_FIB_CONTEXT
;
160 fibptr
->size
= sizeof(struct fib
);
162 * Null out fields that depend on being zero at the start of
165 fibptr
->hw_fib
->header
.XferState
= 0;
166 fibptr
->callback
= NULL
;
167 fibptr
->callback_data
= NULL
;
173 * aac_fib_free - free a fib
174 * @fibptr: fib to free up
176 * Frees up a fib and places it on the appropriate queue
177 * (either free or timed out)
180 void aac_fib_free(struct fib
*fibptr
)
184 spin_lock_irqsave(&fibptr
->dev
->fib_lock
, flags
);
185 if (fibptr
->flags
& FIB_CONTEXT_FLAG_TIMED_OUT
) {
186 aac_config
.fib_timeouts
++;
187 fibptr
->next
= fibptr
->dev
->timeout_fib
;
188 fibptr
->dev
->timeout_fib
= fibptr
;
190 if (fibptr
->hw_fib
->header
.XferState
!= 0) {
191 printk(KERN_WARNING
"aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
193 le32_to_cpu(fibptr
->hw_fib
->header
.XferState
));
195 fibptr
->next
= fibptr
->dev
->free_fib
;
196 fibptr
->dev
->free_fib
= fibptr
;
198 spin_unlock_irqrestore(&fibptr
->dev
->fib_lock
, flags
);
202 * aac_fib_init - initialise a fib
203 * @fibptr: The fib to initialize
205 * Set up the generic fib fields ready for use
208 void aac_fib_init(struct fib
*fibptr
)
210 struct hw_fib
*hw_fib
= fibptr
->hw_fib
;
212 hw_fib
->header
.StructType
= FIB_MAGIC
;
213 hw_fib
->header
.Size
= cpu_to_le16(fibptr
->dev
->max_fib_size
);
214 hw_fib
->header
.XferState
= cpu_to_le32(HostOwned
| FibInitialized
| FibEmpty
| FastResponseCapable
);
215 hw_fib
->header
.SenderFibAddress
= 0; /* Filled in later if needed */
216 hw_fib
->header
.ReceiverFibAddress
= cpu_to_le32(fibptr
->hw_fib_pa
);
217 hw_fib
->header
.SenderSize
= cpu_to_le16(fibptr
->dev
->max_fib_size
);
221 * fib_deallocate - deallocate a fib
222 * @fibptr: fib to deallocate
224 * Will deallocate and return to the free pool the FIB pointed to by the
228 static void fib_dealloc(struct fib
* fibptr
)
230 struct hw_fib
*hw_fib
= fibptr
->hw_fib
;
231 if(hw_fib
->header
.StructType
!= FIB_MAGIC
)
233 hw_fib
->header
.XferState
= 0;
237 * Commuication primitives define and support the queuing method we use to
238 * support host to adapter commuication. All queue accesses happen through
239 * these routines and are the only routines which have a knowledge of the
240 * how these queues are implemented.
244 * aac_get_entry - get a queue entry
247 * @entry: Entry return
248 * @index: Index return
249 * @nonotify: notification control
251 * With a priority the routine returns a queue entry if the queue has free entries. If the queue
252 * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
256 static int aac_get_entry (struct aac_dev
* dev
, u32 qid
, struct aac_entry
**entry
, u32
* index
, unsigned long *nonotify
)
258 struct aac_queue
* q
;
262 * All of the queues wrap when they reach the end, so we check
263 * to see if they have reached the end and if they have we just
264 * set the index back to zero. This is a wrap. You could or off
265 * the high bits in all updates but this is a bit faster I think.
268 q
= &dev
->queues
->queue
[qid
];
270 idx
= *index
= le32_to_cpu(*(q
->headers
.producer
));
271 /* Interrupt Moderation, only interrupt for first two entries */
272 if (idx
!= le32_to_cpu(*(q
->headers
.consumer
))) {
274 if (qid
== AdapNormCmdQueue
)
275 idx
= ADAP_NORM_CMD_ENTRIES
;
277 idx
= ADAP_NORM_RESP_ENTRIES
;
279 if (idx
!= le32_to_cpu(*(q
->headers
.consumer
)))
283 if (qid
== AdapNormCmdQueue
) {
284 if (*index
>= ADAP_NORM_CMD_ENTRIES
)
285 *index
= 0; /* Wrap to front of the Producer Queue. */
287 if (*index
>= ADAP_NORM_RESP_ENTRIES
)
288 *index
= 0; /* Wrap to front of the Producer Queue. */
291 if ((*index
+ 1) == le32_to_cpu(*(q
->headers
.consumer
))) { /* Queue is full */
292 printk(KERN_WARNING
"Queue %d full, %u outstanding.\n",
296 *entry
= q
->base
+ *index
;
302 * aac_queue_get - get the next free QE
304 * @index: Returned index
305 * @priority: Priority of fib
306 * @fib: Fib to associate with the queue entry
307 * @wait: Wait if queue full
308 * @fibptr: Driver fib object to go with fib
309 * @nonotify: Don't notify the adapter
311 * Gets the next free QE off the requested priorty adapter command
312 * queue and associates the Fib with the QE. The QE represented by
313 * index is ready to insert on the queue when this routine returns
317 static 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
)
319 struct aac_entry
* entry
= NULL
;
322 if (qid
== AdapNormCmdQueue
) {
323 /* if no entries wait for some if caller wants to */
324 while (!aac_get_entry(dev
, qid
, &entry
, index
, nonotify
))
326 printk(KERN_ERR
"GetEntries failed\n");
329 * Setup queue entry with a command, status and fib mapped
331 entry
->size
= cpu_to_le32(le16_to_cpu(hw_fib
->header
.Size
));
334 while(!aac_get_entry(dev
, qid
, &entry
, index
, nonotify
))
336 /* if no entries wait for some if caller wants to */
339 * Setup queue entry with command, status and fib mapped
341 entry
->size
= cpu_to_le32(le16_to_cpu(hw_fib
->header
.Size
));
342 entry
->addr
= hw_fib
->header
.SenderFibAddress
;
343 /* Restore adapters pointer to the FIB */
344 hw_fib
->header
.ReceiverFibAddress
= hw_fib
->header
.SenderFibAddress
; /* Let the adapter now where to find its data */
348 * If MapFib is true than we need to map the Fib and put pointers
349 * in the queue entry.
352 entry
->addr
= cpu_to_le32(fibptr
->hw_fib_pa
);
357 * Define the highest level of host to adapter communication routines.
358 * These routines will support host to adapter FS commuication. These
359 * routines have no knowledge of the commuication method used. This level
360 * sends and receives FIBs. This level has no knowledge of how these FIBs
361 * get passed back and forth.
365 * aac_fib_send - send a fib to the adapter
366 * @command: Command to send
368 * @size: Size of fib data area
369 * @priority: Priority of Fib
370 * @wait: Async/sync select
371 * @reply: True if a reply is wanted
372 * @callback: Called with reply
373 * @callback_data: Passed to callback
375 * Sends the requested FIB to the adapter and optionally will wait for a
376 * response FIB. If the caller does not wish to wait for a response than
377 * an event to wait on must be supplied. This event will be set when a
378 * response FIB is received from the adapter.
381 int aac_fib_send(u16 command
, struct fib
*fibptr
, unsigned long size
,
382 int priority
, int wait
, int reply
, fib_callback callback
,
385 struct aac_dev
* dev
= fibptr
->dev
;
386 struct hw_fib
* hw_fib
= fibptr
->hw_fib
;
387 struct aac_queue
* q
;
388 unsigned long flags
= 0;
389 unsigned long qflags
;
391 if (!(hw_fib
->header
.XferState
& cpu_to_le32(HostOwned
)))
394 * There are 5 cases with the wait and reponse requested flags.
395 * The only invalid cases are if the caller requests to wait and
396 * does not request a response and if the caller does not want a
397 * response and the Fib is not allocated from pool. If a response
398 * is not requesed the Fib will just be deallocaed by the DPC
399 * routine when the response comes back from the adapter. No
400 * further processing will be done besides deleting the Fib. We
401 * will have a debug mode where the adapter can notify the host
402 * it had a problem and the host can log that fact.
404 if (wait
&& !reply
) {
406 } else if (!wait
&& reply
) {
407 hw_fib
->header
.XferState
|= cpu_to_le32(Async
| ResponseExpected
);
408 FIB_COUNTER_INCREMENT(aac_config
.AsyncSent
);
409 } else if (!wait
&& !reply
) {
410 hw_fib
->header
.XferState
|= cpu_to_le32(NoResponseExpected
);
411 FIB_COUNTER_INCREMENT(aac_config
.NoResponseSent
);
412 } else if (wait
&& reply
) {
413 hw_fib
->header
.XferState
|= cpu_to_le32(ResponseExpected
);
414 FIB_COUNTER_INCREMENT(aac_config
.NormalSent
);
417 * Map the fib into 32bits by using the fib number
420 hw_fib
->header
.SenderFibAddress
= cpu_to_le32(((u32
)(fibptr
- dev
->fibs
)) << 2);
421 hw_fib
->header
.SenderData
= (u32
)(fibptr
- dev
->fibs
);
423 * Set FIB state to indicate where it came from and if we want a
424 * response from the adapter. Also load the command from the
427 * Map the hw fib pointer as a 32bit value
429 hw_fib
->header
.Command
= cpu_to_le16(command
);
430 hw_fib
->header
.XferState
|= cpu_to_le32(SentFromHost
);
431 fibptr
->hw_fib
->header
.Flags
= 0; /* 0 the flags field - internal only*/
433 * Set the size of the Fib we want to send to the adapter
435 hw_fib
->header
.Size
= cpu_to_le16(sizeof(struct aac_fibhdr
) + size
);
436 if (le16_to_cpu(hw_fib
->header
.Size
) > le16_to_cpu(hw_fib
->header
.SenderSize
)) {
440 * Get a queue entry connect the FIB to it and send an notify
441 * the adapter a command is ready.
443 hw_fib
->header
.XferState
|= cpu_to_le32(NormalPriority
);
446 * Fill in the Callback and CallbackContext if we are not
450 fibptr
->callback
= callback
;
451 fibptr
->callback_data
= callback_data
;
457 FIB_COUNTER_INCREMENT(aac_config
.FibsSent
);
459 dprintk((KERN_DEBUG
"Fib contents:.\n"));
460 dprintk((KERN_DEBUG
" Command = %d.\n", le32_to_cpu(hw_fib
->header
.Command
)));
461 dprintk((KERN_DEBUG
" SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount
*)fib_data(fibptr
))->command
)));
462 dprintk((KERN_DEBUG
" XferState = %x.\n", le32_to_cpu(hw_fib
->header
.XferState
)));
463 dprintk((KERN_DEBUG
" hw_fib va being sent=%p\n",fibptr
->hw_fib
));
464 dprintk((KERN_DEBUG
" hw_fib pa being sent=%lx\n",(ulong
)fibptr
->hw_fib_pa
));
465 dprintk((KERN_DEBUG
" fib being sent=%p\n",fibptr
));
467 q
= &dev
->queues
->queue
[AdapNormCmdQueue
];
470 spin_lock_irqsave(&fibptr
->event_lock
, flags
);
471 spin_lock_irqsave(q
->lock
, qflags
);
472 if (dev
->new_comm_interface
) {
473 unsigned long count
= 10000000L; /* 50 seconds */
474 list_add_tail(&fibptr
->queue
, &q
->pendingq
);
476 spin_unlock_irqrestore(q
->lock
, qflags
);
477 while (aac_adapter_send(fibptr
) != 0) {
480 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
481 spin_lock_irqsave(q
->lock
, qflags
);
483 list_del(&fibptr
->queue
);
484 spin_unlock_irqrestore(q
->lock
, qflags
);
491 unsigned long nointr
= 0;
492 aac_queue_get( dev
, &index
, AdapNormCmdQueue
, hw_fib
, 1, fibptr
, &nointr
);
494 list_add_tail(&fibptr
->queue
, &q
->pendingq
);
496 *(q
->headers
.producer
) = cpu_to_le32(index
+ 1);
497 spin_unlock_irqrestore(q
->lock
, qflags
);
498 dprintk((KERN_DEBUG
"aac_fib_send: inserting a queue entry at index %d.\n",index
));
499 if (!(nointr
& aac_config
.irq_mod
))
500 aac_adapter_notify(dev
, AdapNormCmdQueue
);
504 * If the caller wanted us to wait for response wait now.
508 spin_unlock_irqrestore(&fibptr
->event_lock
, flags
);
509 /* Only set for first known interruptable command */
512 * *VERY* Dangerous to time out a command, the
513 * assumption is made that we have no hope of
514 * functioning because an interrupt routing or other
515 * hardware failure has occurred.
517 unsigned long count
= 36000000L; /* 3 minutes */
518 while (down_trylock(&fibptr
->event_wait
)) {
520 spin_lock_irqsave(q
->lock
, qflags
);
522 list_del(&fibptr
->queue
);
523 spin_unlock_irqrestore(q
->lock
, qflags
);
525 printk(KERN_ERR
"aacraid: aac_fib_send: first asynchronous command timed out.\n"
526 "Usually a result of a PCI interrupt routing problem;\n"
527 "update mother board BIOS or consider utilizing one of\n"
528 "the SAFE mode kernel options (acpi, apic etc)\n");
535 down(&fibptr
->event_wait
);
536 if(fibptr
->done
== 0)
539 if((fibptr
->flags
& FIB_CONTEXT_FLAG_TIMED_OUT
)){
546 * If the user does not want a response than return success otherwise
556 * aac_consumer_get - get the top of the queue
559 * @entry: Return entry
561 * Will return a pointer to the entry on the top of the queue requested that
562 * we are a consumer of, and return the address of the queue entry. It does
563 * not change the state of the queue.
566 int aac_consumer_get(struct aac_dev
* dev
, struct aac_queue
* q
, struct aac_entry
**entry
)
570 if (le32_to_cpu(*q
->headers
.producer
) == le32_to_cpu(*q
->headers
.consumer
)) {
574 * The consumer index must be wrapped if we have reached
575 * the end of the queue, else we just use the entry
576 * pointed to by the header index
578 if (le32_to_cpu(*q
->headers
.consumer
) >= q
->entries
)
581 index
= le32_to_cpu(*q
->headers
.consumer
);
582 *entry
= q
->base
+ index
;
589 * aac_consumer_free - free consumer entry
594 * Frees up the current top of the queue we are a consumer of. If the
595 * queue was full notify the producer that the queue is no longer full.
598 void aac_consumer_free(struct aac_dev
* dev
, struct aac_queue
*q
, u32 qid
)
603 if ((le32_to_cpu(*q
->headers
.producer
)+1) == le32_to_cpu(*q
->headers
.consumer
))
606 if (le32_to_cpu(*q
->headers
.consumer
) >= q
->entries
)
607 *q
->headers
.consumer
= cpu_to_le32(1);
609 *q
->headers
.consumer
= cpu_to_le32(le32_to_cpu(*q
->headers
.consumer
)+1);
614 case HostNormCmdQueue
:
615 notify
= HostNormCmdNotFull
;
617 case HostNormRespQueue
:
618 notify
= HostNormRespNotFull
;
624 aac_adapter_notify(dev
, notify
);
629 * aac_fib_adapter_complete - complete adapter issued fib
630 * @fibptr: fib to complete
633 * Will do all necessary work to complete a FIB that was sent from
637 int aac_fib_adapter_complete(struct fib
*fibptr
, unsigned short size
)
639 struct hw_fib
* hw_fib
= fibptr
->hw_fib
;
640 struct aac_dev
* dev
= fibptr
->dev
;
641 struct aac_queue
* q
;
642 unsigned long nointr
= 0;
643 unsigned long qflags
;
645 if (hw_fib
->header
.XferState
== 0) {
646 if (dev
->new_comm_interface
)
651 * If we plan to do anything check the structure type first.
653 if ( hw_fib
->header
.StructType
!= FIB_MAGIC
) {
654 if (dev
->new_comm_interface
)
659 * This block handles the case where the adapter had sent us a
660 * command and we have finished processing the command. We
661 * call completeFib when we are done processing the command
662 * and want to send a response back to the adapter. This will
663 * send the completed cdb to the adapter.
665 if (hw_fib
->header
.XferState
& cpu_to_le32(SentFromAdapter
)) {
666 if (dev
->new_comm_interface
) {
670 hw_fib
->header
.XferState
|= cpu_to_le32(HostProcessed
);
672 size
+= sizeof(struct aac_fibhdr
);
673 if (size
> le16_to_cpu(hw_fib
->header
.SenderSize
))
675 hw_fib
->header
.Size
= cpu_to_le16(size
);
677 q
= &dev
->queues
->queue
[AdapNormRespQueue
];
678 spin_lock_irqsave(q
->lock
, qflags
);
679 aac_queue_get(dev
, &index
, AdapNormRespQueue
, hw_fib
, 1, NULL
, &nointr
);
680 *(q
->headers
.producer
) = cpu_to_le32(index
+ 1);
681 spin_unlock_irqrestore(q
->lock
, qflags
);
682 if (!(nointr
& (int)aac_config
.irq_mod
))
683 aac_adapter_notify(dev
, AdapNormRespQueue
);
688 printk(KERN_WARNING
"aac_fib_adapter_complete: Unknown xferstate detected.\n");
695 * aac_fib_complete - fib completion handler
696 * @fib: FIB to complete
698 * Will do all necessary work to complete a FIB.
701 int aac_fib_complete(struct fib
*fibptr
)
703 struct hw_fib
* hw_fib
= fibptr
->hw_fib
;
706 * Check for a fib which has already been completed
709 if (hw_fib
->header
.XferState
== 0)
712 * If we plan to do anything check the structure type first.
715 if (hw_fib
->header
.StructType
!= FIB_MAGIC
)
718 * This block completes a cdb which orginated on the host and we
719 * just need to deallocate the cdb or reinit it. At this point the
720 * command is complete that we had sent to the adapter and this
721 * cdb could be reused.
723 if((hw_fib
->header
.XferState
& cpu_to_le32(SentFromHost
)) &&
724 (hw_fib
->header
.XferState
& cpu_to_le32(AdapterProcessed
)))
728 else if(hw_fib
->header
.XferState
& cpu_to_le32(SentFromHost
))
731 * This handles the case when the host has aborted the I/O
732 * to the adapter because the adapter is not responding
735 } else if(hw_fib
->header
.XferState
& cpu_to_le32(HostOwned
)) {
744 * aac_printf - handle printf from firmware
748 * Print a message passed to us by the controller firmware on the
752 void aac_printf(struct aac_dev
*dev
, u32 val
)
754 char *cp
= dev
->printfbuf
;
755 if (dev
->printf_enabled
)
757 int length
= val
& 0xffff;
758 int level
= (val
>> 16) & 0xffff;
761 * The size of the printfbuf is set in port.c
762 * There is no variable or define for it
768 if (level
== LOG_AAC_HIGH_ERROR
)
769 printk(KERN_WARNING
"aacraid:%s", cp
);
771 printk(KERN_INFO
"aacraid:%s", cp
);
778 * aac_handle_aif - Handle a message from the firmware
779 * @dev: Which adapter this fib is from
780 * @fibptr: Pointer to fibptr from adapter
782 * This routine handles a driver notify fib from the adapter and
783 * dispatches it to the appropriate routine for handling.
786 static void aac_handle_aif(struct aac_dev
* dev
, struct fib
* fibptr
)
788 struct hw_fib
* hw_fib
= fibptr
->hw_fib
;
789 struct aac_aifcmd
* aifcmd
= (struct aac_aifcmd
*)hw_fib
->data
;
792 struct scsi_device
*device
;
798 } device_config_needed
;
800 /* Sniff for container changes */
807 * We have set this up to try and minimize the number of
808 * re-configures that take place. As a result of this when
809 * certain AIF's come in we will set a flag waiting for another
810 * type of AIF before setting the re-config flag.
812 switch (le32_to_cpu(aifcmd
->command
)) {
813 case AifCmdDriverNotify
:
814 switch (le32_to_cpu(((u32
*)aifcmd
->data
)[0])) {
816 * Morph or Expand complete
818 case AifDenMorphComplete
:
819 case AifDenVolumeExtendComplete
:
820 container
= le32_to_cpu(((u32
*)aifcmd
->data
)[1]);
821 if (container
>= dev
->maximum_num_containers
)
825 * Find the scsi_device associated with the SCSI
826 * address. Make sure we have the right array, and if
827 * so set the flag to initiate a new re-config once we
828 * see an AifEnConfigChange AIF come through.
831 if ((dev
!= NULL
) && (dev
->scsi_host_ptr
!= NULL
)) {
832 device
= scsi_device_lookup(dev
->scsi_host_ptr
,
833 CONTAINER_TO_CHANNEL(container
),
834 CONTAINER_TO_ID(container
),
835 CONTAINER_TO_LUN(container
));
837 dev
->fsa_dev
[container
].config_needed
= CHANGE
;
838 dev
->fsa_dev
[container
].config_waiting_on
= AifEnConfigChange
;
839 scsi_device_put(device
);
845 * If we are waiting on something and this happens to be
846 * that thing then set the re-configure flag.
848 if (container
!= (u32
)-1) {
849 if (container
>= dev
->maximum_num_containers
)
851 if (dev
->fsa_dev
[container
].config_waiting_on
==
852 le32_to_cpu(*(u32
*)aifcmd
->data
))
853 dev
->fsa_dev
[container
].config_waiting_on
= 0;
854 } else for (container
= 0;
855 container
< dev
->maximum_num_containers
; ++container
) {
856 if (dev
->fsa_dev
[container
].config_waiting_on
==
857 le32_to_cpu(*(u32
*)aifcmd
->data
))
858 dev
->fsa_dev
[container
].config_waiting_on
= 0;
862 case AifCmdEventNotify
:
863 switch (le32_to_cpu(((u32
*)aifcmd
->data
)[0])) {
867 case AifEnAddContainer
:
868 container
= le32_to_cpu(((u32
*)aifcmd
->data
)[1]);
869 if (container
>= dev
->maximum_num_containers
)
871 dev
->fsa_dev
[container
].config_needed
= ADD
;
872 dev
->fsa_dev
[container
].config_waiting_on
=
879 case AifEnDeleteContainer
:
880 container
= le32_to_cpu(((u32
*)aifcmd
->data
)[1]);
881 if (container
>= dev
->maximum_num_containers
)
883 dev
->fsa_dev
[container
].config_needed
= DELETE
;
884 dev
->fsa_dev
[container
].config_waiting_on
=
889 * Container change detected. If we currently are not
890 * waiting on something else, setup to wait on a Config Change.
892 case AifEnContainerChange
:
893 container
= le32_to_cpu(((u32
*)aifcmd
->data
)[1]);
894 if (container
>= dev
->maximum_num_containers
)
896 if (dev
->fsa_dev
[container
].config_waiting_on
)
898 dev
->fsa_dev
[container
].config_needed
= CHANGE
;
899 dev
->fsa_dev
[container
].config_waiting_on
=
903 case AifEnConfigChange
:
909 * If we are waiting on something and this happens to be
910 * that thing then set the re-configure flag.
912 if (container
!= (u32
)-1) {
913 if (container
>= dev
->maximum_num_containers
)
915 if (dev
->fsa_dev
[container
].config_waiting_on
==
916 le32_to_cpu(*(u32
*)aifcmd
->data
))
917 dev
->fsa_dev
[container
].config_waiting_on
= 0;
918 } else for (container
= 0;
919 container
< dev
->maximum_num_containers
; ++container
) {
920 if (dev
->fsa_dev
[container
].config_waiting_on
==
921 le32_to_cpu(*(u32
*)aifcmd
->data
))
922 dev
->fsa_dev
[container
].config_waiting_on
= 0;
926 case AifCmdJobProgress
:
928 * These are job progress AIF's. When a Clear is being
929 * done on a container it is initially created then hidden from
930 * the OS. When the clear completes we don't get a config
931 * change so we monitor the job status complete on a clear then
932 * wait for a container change.
935 if ((((u32
*)aifcmd
->data
)[1] == cpu_to_le32(AifJobCtrZero
))
936 && ((((u32
*)aifcmd
->data
)[6] == ((u32
*)aifcmd
->data
)[5])
937 || (((u32
*)aifcmd
->data
)[4] == cpu_to_le32(AifJobStsSuccess
)))) {
939 container
< dev
->maximum_num_containers
;
942 * Stomp on all config sequencing for all
945 dev
->fsa_dev
[container
].config_waiting_on
=
946 AifEnContainerChange
;
947 dev
->fsa_dev
[container
].config_needed
= ADD
;
950 if ((((u32
*)aifcmd
->data
)[1] == cpu_to_le32(AifJobCtrZero
))
951 && (((u32
*)aifcmd
->data
)[6] == 0)
952 && (((u32
*)aifcmd
->data
)[4] == cpu_to_le32(AifJobStsRunning
))) {
954 container
< dev
->maximum_num_containers
;
957 * Stomp on all config sequencing for all
960 dev
->fsa_dev
[container
].config_waiting_on
=
961 AifEnContainerChange
;
962 dev
->fsa_dev
[container
].config_needed
= DELETE
;
968 device_config_needed
= NOTHING
;
969 for (container
= 0; container
< dev
->maximum_num_containers
;
971 if ((dev
->fsa_dev
[container
].config_waiting_on
== 0)
972 && (dev
->fsa_dev
[container
].config_needed
!= NOTHING
)) {
973 device_config_needed
=
974 dev
->fsa_dev
[container
].config_needed
;
975 dev
->fsa_dev
[container
].config_needed
= NOTHING
;
979 if (device_config_needed
== NOTHING
)
983 * If we decided that a re-configuration needs to be done,
984 * schedule it here on the way out the door, please close the door
992 * Find the scsi_device associated with the SCSI address,
993 * and mark it as changed, invalidating the cache. This deals
994 * with changes to existing device IDs.
997 if (!dev
|| !dev
->scsi_host_ptr
)
1000 * force reload of disk info via aac_probe_container
1002 if ((device_config_needed
== CHANGE
)
1003 && (dev
->fsa_dev
[container
].valid
== 1))
1004 dev
->fsa_dev
[container
].valid
= 2;
1005 if ((device_config_needed
== CHANGE
) ||
1006 (device_config_needed
== ADD
))
1007 aac_probe_container(dev
, container
);
1008 device
= scsi_device_lookup(dev
->scsi_host_ptr
,
1009 CONTAINER_TO_CHANNEL(container
),
1010 CONTAINER_TO_ID(container
),
1011 CONTAINER_TO_LUN(container
));
1013 switch (device_config_needed
) {
1015 scsi_remove_device(device
);
1018 if (!dev
->fsa_dev
[container
].valid
) {
1019 scsi_remove_device(device
);
1022 scsi_rescan_device(&device
->sdev_gendev
);
1027 scsi_device_put(device
);
1029 if (device_config_needed
== ADD
) {
1030 scsi_add_device(dev
->scsi_host_ptr
,
1031 CONTAINER_TO_CHANNEL(container
),
1032 CONTAINER_TO_ID(container
),
1033 CONTAINER_TO_LUN(container
));
1039 * aac_command_thread - command processing thread
1040 * @dev: Adapter to monitor
1042 * Waits on the commandready event in it's queue. When the event gets set
1043 * it will pull FIBs off it's queue. It will continue to pull FIBs off
1044 * until the queue is empty. When the queue is empty it will wait for
1048 int aac_command_thread(struct aac_dev
* dev
)
1050 struct hw_fib
*hw_fib
, *hw_newfib
;
1051 struct fib
*fib
, *newfib
;
1052 struct aac_fib_context
*fibctx
;
1053 unsigned long flags
;
1054 DECLARE_WAITQUEUE(wait
, current
);
1057 * We can only have one thread per adapter for AIF's.
1059 if (dev
->aif_thread
)
1062 * Set up the name that will appear in 'ps'
1063 * stored in task_struct.comm[16].
1065 daemonize("aacraid");
1066 allow_signal(SIGKILL
);
1068 * Let the DPC know it has a place to send the AIF's to.
1070 dev
->aif_thread
= 1;
1071 add_wait_queue(&dev
->queues
->queue
[HostNormCmdQueue
].cmdready
, &wait
);
1072 set_current_state(TASK_INTERRUPTIBLE
);
1073 dprintk ((KERN_INFO
"aac_command_thread start\n"));
1076 spin_lock_irqsave(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1077 while(!list_empty(&(dev
->queues
->queue
[HostNormCmdQueue
].cmdq
))) {
1078 struct list_head
*entry
;
1079 struct aac_aifcmd
* aifcmd
;
1081 set_current_state(TASK_RUNNING
);
1083 entry
= dev
->queues
->queue
[HostNormCmdQueue
].cmdq
.next
;
1086 spin_unlock_irqrestore(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1087 fib
= list_entry(entry
, struct fib
, fiblink
);
1089 * We will process the FIB here or pass it to a
1090 * worker thread that is TBD. We Really can't
1091 * do anything at this point since we don't have
1092 * anything defined for this thread to do.
1094 hw_fib
= fib
->hw_fib
;
1095 memset(fib
, 0, sizeof(struct fib
));
1096 fib
->type
= FSAFS_NTC_FIB_CONTEXT
;
1097 fib
->size
= sizeof( struct fib
);
1098 fib
->hw_fib
= hw_fib
;
1099 fib
->data
= hw_fib
->data
;
1102 * We only handle AifRequest fibs from the adapter.
1104 aifcmd
= (struct aac_aifcmd
*) hw_fib
->data
;
1105 if (aifcmd
->command
== cpu_to_le32(AifCmdDriverNotify
)) {
1106 /* Handle Driver Notify Events */
1107 aac_handle_aif(dev
, fib
);
1108 *(__le32
*)hw_fib
->data
= cpu_to_le32(ST_OK
);
1109 aac_fib_adapter_complete(fib
, (u16
)sizeof(u32
));
1111 struct list_head
*entry
;
1112 /* The u32 here is important and intended. We are using
1113 32bit wrapping time to fit the adapter field */
1115 u32 time_now
, time_last
;
1116 unsigned long flagv
;
1118 struct hw_fib
** hw_fib_pool
, ** hw_fib_p
;
1119 struct fib
** fib_pool
, ** fib_p
;
1122 if ((aifcmd
->command
==
1123 cpu_to_le32(AifCmdEventNotify
)) ||
1125 cpu_to_le32(AifCmdJobProgress
))) {
1126 aac_handle_aif(dev
, fib
);
1129 time_now
= jiffies
/HZ
;
1132 * Warning: no sleep allowed while
1133 * holding spinlock. We take the estimate
1134 * and pre-allocate a set of fibs outside the
1137 num
= le32_to_cpu(dev
->init
->AdapterFibsSize
)
1138 / sizeof(struct hw_fib
); /* some extra */
1139 spin_lock_irqsave(&dev
->fib_lock
, flagv
);
1140 entry
= dev
->fib_list
.next
;
1141 while (entry
!= &dev
->fib_list
) {
1142 entry
= entry
->next
;
1145 spin_unlock_irqrestore(&dev
->fib_lock
, flagv
);
1149 && ((hw_fib_pool
= kmalloc(sizeof(struct hw_fib
*) * num
, GFP_KERNEL
)))
1150 && ((fib_pool
= kmalloc(sizeof(struct fib
*) * num
, GFP_KERNEL
)))) {
1151 hw_fib_p
= hw_fib_pool
;
1153 while (hw_fib_p
< &hw_fib_pool
[num
]) {
1154 if (!(*(hw_fib_p
++) = kmalloc(sizeof(struct hw_fib
), GFP_KERNEL
))) {
1158 if (!(*(fib_p
++) = kmalloc(sizeof(struct fib
), GFP_KERNEL
))) {
1159 kfree(*(--hw_fib_p
));
1163 if ((num
= hw_fib_p
- hw_fib_pool
) == 0) {
1173 spin_lock_irqsave(&dev
->fib_lock
, flagv
);
1174 entry
= dev
->fib_list
.next
;
1176 * For each Context that is on the
1177 * fibctxList, make a copy of the
1178 * fib, and then set the event to wake up the
1179 * thread that is waiting for it.
1181 hw_fib_p
= hw_fib_pool
;
1183 while (entry
!= &dev
->fib_list
) {
1185 * Extract the fibctx
1187 fibctx
= list_entry(entry
, struct aac_fib_context
, next
);
1189 * Check if the queue is getting
1192 if (fibctx
->count
> 20)
1195 * It's *not* jiffies folks,
1196 * but jiffies / HZ so do not
1199 time_last
= fibctx
->jiffies
;
1201 * Has it been > 2 minutes
1202 * since the last read off
1205 if ((time_now
- time_last
) > 120) {
1206 entry
= entry
->next
;
1207 aac_close_fib_context(dev
, fibctx
);
1212 * Warning: no sleep allowed while
1215 if (hw_fib_p
< &hw_fib_pool
[num
]) {
1216 hw_newfib
= *hw_fib_p
;
1217 *(hw_fib_p
++) = NULL
;
1221 * Make the copy of the FIB
1223 memcpy(hw_newfib
, hw_fib
, sizeof(struct hw_fib
));
1224 memcpy(newfib
, fib
, sizeof(struct fib
));
1225 newfib
->hw_fib
= hw_newfib
;
1227 * Put the FIB onto the
1230 list_add_tail(&newfib
->fiblink
, &fibctx
->fib_list
);
1233 * Set the event to wake up the
1234 * thread that is waiting.
1236 up(&fibctx
->wait_sem
);
1238 printk(KERN_WARNING
"aifd: didn't allocate NewFib.\n");
1240 entry
= entry
->next
;
1243 * Set the status of this FIB
1245 *(__le32
*)hw_fib
->data
= cpu_to_le32(ST_OK
);
1246 aac_fib_adapter_complete(fib
, sizeof(u32
));
1247 spin_unlock_irqrestore(&dev
->fib_lock
, flagv
);
1248 /* Free up the remaining resources */
1249 hw_fib_p
= hw_fib_pool
;
1251 while (hw_fib_p
< &hw_fib_pool
[num
]) {
1261 spin_lock_irqsave(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1264 * There are no more AIF's
1266 spin_unlock_irqrestore(dev
->queues
->queue
[HostNormCmdQueue
].lock
, flags
);
1269 if(signal_pending(current
))
1271 set_current_state(TASK_INTERRUPTIBLE
);
1274 remove_wait_queue(&dev
->queues
->queue
[HostNormCmdQueue
].cmdready
, &wait
);
1275 dev
->aif_thread
= 0;
1276 complete_and_exit(&dev
->aif_completion
, 0);