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 <linux/kthread.h>
43 #include <scsi/scsi.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_device.h>
46 #include <scsi/scsi_cmnd.h>
47 #include <asm/semaphore.h>
52 * fib_map_alloc - allocate the fib objects
53 * @dev: Adapter to allocate for
55 * Allocate and map the shared PCI space for the FIB blocks used to
56 * talk to the Adaptec firmware.
59 static int fib_map_alloc(struct aac_dev *dev)
62 "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n",
63 dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue,
64 AAC_NUM_MGT_FIB, &dev->hw_fib_pa));
65 if((dev->hw_fib_va = pci_alloc_consistent(dev->pdev, dev->max_fib_size
66 * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB),
67 &dev->hw_fib_pa))==NULL)
73 * aac_fib_map_free - free the fib objects
74 * @dev: Adapter to free
76 * Free the PCI mappings and the memory allocated for FIB blocks
80 void aac_fib_map_free(struct aac_dev *dev)
82 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);
86 * aac_fib_setup - setup the fibs
87 * @dev: Adapter to set up
89 * Allocate the PCI space for the fibs, map it and then intialise the
90 * fib area, the unmapped fib data and also the free list
93 int aac_fib_setup(struct aac_dev * dev)
96 struct hw_fib *hw_fib_va;
100 while (((i = fib_map_alloc(dev)) == -ENOMEM)
101 && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) {
102 dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1);
103 dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB;
108 hw_fib_va = dev->hw_fib_va;
109 hw_fib_pa = dev->hw_fib_pa;
110 memset(hw_fib_va, 0, dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
112 * Initialise the fibs
114 for (i = 0, fibptr = &dev->fibs[i]; i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); i++, fibptr++)
117 fibptr->hw_fib = hw_fib_va;
118 fibptr->data = (void *) fibptr->hw_fib->data;
119 fibptr->next = fibptr+1; /* Forward chain the fibs */
120 init_MUTEX_LOCKED(&fibptr->event_wait);
121 spin_lock_init(&fibptr->event_lock);
122 hw_fib_va->header.XferState = cpu_to_le32(0xffffffff);
123 hw_fib_va->header.SenderSize = cpu_to_le16(dev->max_fib_size);
124 fibptr->hw_fib_pa = hw_fib_pa;
125 hw_fib_va = (struct hw_fib *)((unsigned char *)hw_fib_va + dev->max_fib_size);
126 hw_fib_pa = hw_fib_pa + dev->max_fib_size;
129 * Add the fib chain to the free list
131 dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL;
133 * Enable this to debug out of queue space
135 dev->free_fib = &dev->fibs[0];
140 * aac_fib_alloc - allocate a fib
141 * @dev: Adapter to allocate the fib for
143 * Allocate a fib from the adapter fib pool. If the pool is empty we
147 struct fib *aac_fib_alloc(struct aac_dev *dev)
151 spin_lock_irqsave(&dev->fib_lock, flags);
152 fibptr = dev->free_fib;
154 spin_unlock_irqrestore(&dev->fib_lock, flags);
157 dev->free_fib = fibptr->next;
158 spin_unlock_irqrestore(&dev->fib_lock, flags);
160 * Set the proper node type code and node byte size
162 fibptr->type = FSAFS_NTC_FIB_CONTEXT;
163 fibptr->size = sizeof(struct fib);
165 * Null out fields that depend on being zero at the start of
168 fibptr->hw_fib->header.XferState = 0;
169 fibptr->callback = NULL;
170 fibptr->callback_data = NULL;
176 * aac_fib_free - free a fib
177 * @fibptr: fib to free up
179 * Frees up a fib and places it on the appropriate queue
180 * (either free or timed out)
183 void aac_fib_free(struct fib *fibptr)
187 spin_lock_irqsave(&fibptr->dev->fib_lock, flags);
188 if (fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT) {
189 aac_config.fib_timeouts++;
190 fibptr->next = fibptr->dev->timeout_fib;
191 fibptr->dev->timeout_fib = fibptr;
193 if (fibptr->hw_fib->header.XferState != 0) {
194 printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
196 le32_to_cpu(fibptr->hw_fib->header.XferState));
198 fibptr->next = fibptr->dev->free_fib;
199 fibptr->dev->free_fib = fibptr;
201 spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags);
205 * aac_fib_init - initialise a fib
206 * @fibptr: The fib to initialize
208 * Set up the generic fib fields ready for use
211 void aac_fib_init(struct fib *fibptr)
213 struct hw_fib *hw_fib = fibptr->hw_fib;
215 hw_fib->header.StructType = FIB_MAGIC;
216 hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size);
217 hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable);
218 hw_fib->header.SenderFibAddress = 0; /* Filled in later if needed */
219 hw_fib->header.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa);
220 hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size);
224 * fib_deallocate - deallocate a fib
225 * @fibptr: fib to deallocate
227 * Will deallocate and return to the free pool the FIB pointed to by the
231 static void fib_dealloc(struct fib * fibptr)
233 struct hw_fib *hw_fib = fibptr->hw_fib;
234 BUG_ON(hw_fib->header.StructType != FIB_MAGIC);
235 hw_fib->header.XferState = 0;
239 * Commuication primitives define and support the queuing method we use to
240 * support host to adapter commuication. All queue accesses happen through
241 * these routines and are the only routines which have a knowledge of the
242 * how these queues are implemented.
246 * aac_get_entry - get a queue entry
249 * @entry: Entry return
250 * @index: Index return
251 * @nonotify: notification control
253 * With a priority the routine returns a queue entry if the queue has free entries. If the queue
254 * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
258 static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify)
260 struct aac_queue * q;
264 * All of the queues wrap when they reach the end, so we check
265 * to see if they have reached the end and if they have we just
266 * set the index back to zero. This is a wrap. You could or off
267 * the high bits in all updates but this is a bit faster I think.
270 q = &dev->queues->queue[qid];
272 idx = *index = le32_to_cpu(*(q->headers.producer));
273 /* Interrupt Moderation, only interrupt for first two entries */
274 if (idx != le32_to_cpu(*(q->headers.consumer))) {
276 if (qid == AdapNormCmdQueue)
277 idx = ADAP_NORM_CMD_ENTRIES;
279 idx = ADAP_NORM_RESP_ENTRIES;
281 if (idx != le32_to_cpu(*(q->headers.consumer)))
285 if (qid == AdapNormCmdQueue) {
286 if (*index >= ADAP_NORM_CMD_ENTRIES)
287 *index = 0; /* Wrap to front of the Producer Queue. */
289 if (*index >= ADAP_NORM_RESP_ENTRIES)
290 *index = 0; /* Wrap to front of the Producer Queue. */
293 if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) { /* Queue is full */
294 printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
298 *entry = q->base + *index;
304 * aac_queue_get - get the next free QE
306 * @index: Returned index
307 * @priority: Priority of fib
308 * @fib: Fib to associate with the queue entry
309 * @wait: Wait if queue full
310 * @fibptr: Driver fib object to go with fib
311 * @nonotify: Don't notify the adapter
313 * Gets the next free QE off the requested priorty adapter command
314 * queue and associates the Fib with the QE. The QE represented by
315 * index is ready to insert on the queue when this routine returns
319 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)
321 struct aac_entry * entry = NULL;
324 if (qid == AdapNormCmdQueue) {
325 /* if no entries wait for some if caller wants to */
326 while (!aac_get_entry(dev, qid, &entry, index, nonotify))
328 printk(KERN_ERR "GetEntries failed\n");
331 * Setup queue entry with a command, status and fib mapped
333 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
336 while(!aac_get_entry(dev, qid, &entry, index, nonotify))
338 /* if no entries wait for some if caller wants to */
341 * Setup queue entry with command, status and fib mapped
343 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
344 entry->addr = hw_fib->header.SenderFibAddress;
345 /* Restore adapters pointer to the FIB */
346 hw_fib->header.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */
350 * If MapFib is true than we need to map the Fib and put pointers
351 * in the queue entry.
354 entry->addr = cpu_to_le32(fibptr->hw_fib_pa);
359 * Define the highest level of host to adapter communication routines.
360 * These routines will support host to adapter FS commuication. These
361 * routines have no knowledge of the commuication method used. This level
362 * sends and receives FIBs. This level has no knowledge of how these FIBs
363 * get passed back and forth.
367 * aac_fib_send - send a fib to the adapter
368 * @command: Command to send
370 * @size: Size of fib data area
371 * @priority: Priority of Fib
372 * @wait: Async/sync select
373 * @reply: True if a reply is wanted
374 * @callback: Called with reply
375 * @callback_data: Passed to callback
377 * Sends the requested FIB to the adapter and optionally will wait for a
378 * response FIB. If the caller does not wish to wait for a response than
379 * an event to wait on must be supplied. This event will be set when a
380 * response FIB is received from the adapter.
383 int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
384 int priority, int wait, int reply, fib_callback callback,
387 struct aac_dev * dev = fibptr->dev;
388 struct hw_fib * hw_fib = fibptr->hw_fib;
389 struct aac_queue * q;
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.
406 if (wait && !reply) {
408 } else if (!wait && reply) {
409 hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected);
410 FIB_COUNTER_INCREMENT(aac_config.AsyncSent);
411 } else if (!wait && !reply) {
412 hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected);
413 FIB_COUNTER_INCREMENT(aac_config.NoResponseSent);
414 } else if (wait && reply) {
415 hw_fib->header.XferState |= cpu_to_le32(ResponseExpected);
416 FIB_COUNTER_INCREMENT(aac_config.NormalSent);
419 * Map the fib into 32bits by using the fib number
422 hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2);
423 hw_fib->header.SenderData = (u32)(fibptr - dev->fibs);
425 * Set FIB state to indicate where it came from and if we want a
426 * response from the adapter. Also load the command from the
429 * Map the hw fib pointer as a 32bit value
431 hw_fib->header.Command = cpu_to_le16(command);
432 hw_fib->header.XferState |= cpu_to_le32(SentFromHost);
433 fibptr->hw_fib->header.Flags = 0; /* 0 the flags field - internal only*/
435 * Set the size of the Fib we want to send to the adapter
437 hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size);
438 if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) {
442 * Get a queue entry connect the FIB to it and send an notify
443 * the adapter a command is ready.
445 hw_fib->header.XferState |= cpu_to_le32(NormalPriority);
448 * Fill in the Callback and CallbackContext if we are not
452 fibptr->callback = callback;
453 fibptr->callback_data = callback_data;
459 FIB_COUNTER_INCREMENT(aac_config.FibsSent);
461 dprintk((KERN_DEBUG "Fib contents:.\n"));
462 dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command)));
463 dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command)));
464 dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState)));
465 dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib));
466 dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
467 dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr));
471 q = &dev->queues->queue[AdapNormCmdQueue];
474 spin_lock_irqsave(&fibptr->event_lock, flags);
475 spin_lock_irqsave(q->lock, qflags);
476 if (dev->new_comm_interface) {
477 unsigned long count = 10000000L; /* 50 seconds */
479 spin_unlock_irqrestore(q->lock, qflags);
480 while (aac_adapter_send(fibptr) != 0) {
483 spin_unlock_irqrestore(&fibptr->event_lock, flags);
484 spin_lock_irqsave(q->lock, qflags);
486 spin_unlock_irqrestore(q->lock, qflags);
493 unsigned long nointr = 0;
494 aac_queue_get( dev, &index, AdapNormCmdQueue, hw_fib, 1, fibptr, &nointr);
497 *(q->headers.producer) = cpu_to_le32(index + 1);
498 spin_unlock_irqrestore(q->lock, qflags);
499 dprintk((KERN_DEBUG "aac_fib_send: inserting a queue entry at index %d.\n",index));
500 if (!(nointr & aac_config.irq_mod))
501 aac_adapter_notify(dev, AdapNormCmdQueue);
505 * If the caller wanted us to wait for response wait now.
509 spin_unlock_irqrestore(&fibptr->event_lock, flags);
510 /* Only set for first known interruptable command */
513 * *VERY* Dangerous to time out a command, the
514 * assumption is made that we have no hope of
515 * functioning because an interrupt routing or other
516 * hardware failure has occurred.
518 unsigned long count = 36000000L; /* 3 minutes */
519 while (down_trylock(&fibptr->event_wait)) {
521 spin_lock_irqsave(q->lock, qflags);
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");
534 } else if (down_interruptible(&fibptr->event_wait)) {
535 spin_lock_irqsave(&fibptr->event_lock, flags);
536 if (fibptr->done == 0) {
537 fibptr->done = 2; /* Tell interrupt we aborted */
538 spin_unlock_irqrestore(&fibptr->event_lock, flags);
541 spin_unlock_irqrestore(&fibptr->event_lock, flags);
543 BUG_ON(fibptr->done == 0);
545 if((fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)){
552 * If the user does not want a response than return success otherwise
562 * aac_consumer_get - get the top of the queue
565 * @entry: Return entry
567 * Will return a pointer to the entry on the top of the queue requested that
568 * we are a consumer of, and return the address of the queue entry. It does
569 * not change the state of the queue.
572 int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry)
576 if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) {
580 * The consumer index must be wrapped if we have reached
581 * the end of the queue, else we just use the entry
582 * pointed to by the header index
584 if (le32_to_cpu(*q->headers.consumer) >= q->entries)
587 index = le32_to_cpu(*q->headers.consumer);
588 *entry = q->base + index;
595 * aac_consumer_free - free consumer entry
600 * Frees up the current top of the queue we are a consumer of. If the
601 * queue was full notify the producer that the queue is no longer full.
604 void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid)
609 if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer))
612 if (le32_to_cpu(*q->headers.consumer) >= q->entries)
613 *q->headers.consumer = cpu_to_le32(1);
615 *q->headers.consumer = cpu_to_le32(le32_to_cpu(*q->headers.consumer)+1);
620 case HostNormCmdQueue:
621 notify = HostNormCmdNotFull;
623 case HostNormRespQueue:
624 notify = HostNormRespNotFull;
630 aac_adapter_notify(dev, notify);
635 * aac_fib_adapter_complete - complete adapter issued fib
636 * @fibptr: fib to complete
639 * Will do all necessary work to complete a FIB that was sent from
643 int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
645 struct hw_fib * hw_fib = fibptr->hw_fib;
646 struct aac_dev * dev = fibptr->dev;
647 struct aac_queue * q;
648 unsigned long nointr = 0;
649 unsigned long qflags;
651 if (hw_fib->header.XferState == 0) {
652 if (dev->new_comm_interface)
657 * If we plan to do anything check the structure type first.
659 if ( hw_fib->header.StructType != FIB_MAGIC ) {
660 if (dev->new_comm_interface)
665 * This block handles the case where the adapter had sent us a
666 * command and we have finished processing the command. We
667 * call completeFib when we are done processing the command
668 * and want to send a response back to the adapter. This will
669 * send the completed cdb to the adapter.
671 if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) {
672 if (dev->new_comm_interface) {
676 hw_fib->header.XferState |= cpu_to_le32(HostProcessed);
678 size += sizeof(struct aac_fibhdr);
679 if (size > le16_to_cpu(hw_fib->header.SenderSize))
681 hw_fib->header.Size = cpu_to_le16(size);
683 q = &dev->queues->queue[AdapNormRespQueue];
684 spin_lock_irqsave(q->lock, qflags);
685 aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr);
686 *(q->headers.producer) = cpu_to_le32(index + 1);
687 spin_unlock_irqrestore(q->lock, qflags);
688 if (!(nointr & (int)aac_config.irq_mod))
689 aac_adapter_notify(dev, AdapNormRespQueue);
694 printk(KERN_WARNING "aac_fib_adapter_complete: Unknown xferstate detected.\n");
701 * aac_fib_complete - fib completion handler
702 * @fib: FIB to complete
704 * Will do all necessary work to complete a FIB.
707 int aac_fib_complete(struct fib *fibptr)
709 struct hw_fib * hw_fib = fibptr->hw_fib;
712 * Check for a fib which has already been completed
715 if (hw_fib->header.XferState == 0)
718 * If we plan to do anything check the structure type first.
721 if (hw_fib->header.StructType != FIB_MAGIC)
724 * This block completes a cdb which orginated on the host and we
725 * just need to deallocate the cdb or reinit it. At this point the
726 * command is complete that we had sent to the adapter and this
727 * cdb could be reused.
729 if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) &&
730 (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)))
734 else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost))
737 * This handles the case when the host has aborted the I/O
738 * to the adapter because the adapter is not responding
741 } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) {
750 * aac_printf - handle printf from firmware
754 * Print a message passed to us by the controller firmware on the
758 void aac_printf(struct aac_dev *dev, u32 val)
760 char *cp = dev->printfbuf;
761 if (dev->printf_enabled)
763 int length = val & 0xffff;
764 int level = (val >> 16) & 0xffff;
767 * The size of the printfbuf is set in port.c
768 * There is no variable or define for it
774 if (level == LOG_AAC_HIGH_ERROR)
775 printk(KERN_WARNING "%s:%s", dev->name, cp);
777 printk(KERN_INFO "%s:%s", dev->name, cp);
784 * aac_handle_aif - Handle a message from the firmware
785 * @dev: Which adapter this fib is from
786 * @fibptr: Pointer to fibptr from adapter
788 * This routine handles a driver notify fib from the adapter and
789 * dispatches it to the appropriate routine for handling.
792 #define AIF_SNIFF_TIMEOUT (30*HZ)
793 static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
795 struct hw_fib * hw_fib = fibptr->hw_fib;
796 struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data;
799 struct scsi_device *device;
805 } device_config_needed;
807 /* Sniff for container changes */
809 if (!dev || !dev->fsa_dev)
814 * We have set this up to try and minimize the number of
815 * re-configures that take place. As a result of this when
816 * certain AIF's come in we will set a flag waiting for another
817 * type of AIF before setting the re-config flag.
819 switch (le32_to_cpu(aifcmd->command)) {
820 case AifCmdDriverNotify:
821 switch (le32_to_cpu(((u32 *)aifcmd->data)[0])) {
823 * Morph or Expand complete
825 case AifDenMorphComplete:
826 case AifDenVolumeExtendComplete:
827 container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
828 if (container >= dev->maximum_num_containers)
832 * Find the scsi_device associated with the SCSI
833 * address. Make sure we have the right array, and if
834 * so set the flag to initiate a new re-config once we
835 * see an AifEnConfigChange AIF come through.
838 if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) {
839 device = scsi_device_lookup(dev->scsi_host_ptr,
840 CONTAINER_TO_CHANNEL(container),
841 CONTAINER_TO_ID(container),
842 CONTAINER_TO_LUN(container));
844 dev->fsa_dev[container].config_needed = CHANGE;
845 dev->fsa_dev[container].config_waiting_on = AifEnConfigChange;
846 dev->fsa_dev[container].config_waiting_stamp = jiffies;
847 scsi_device_put(device);
853 * If we are waiting on something and this happens to be
854 * that thing then set the re-configure flag.
856 if (container != (u32)-1) {
857 if (container >= dev->maximum_num_containers)
859 if ((dev->fsa_dev[container].config_waiting_on ==
860 le32_to_cpu(*(u32 *)aifcmd->data)) &&
861 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
862 dev->fsa_dev[container].config_waiting_on = 0;
863 } else for (container = 0;
864 container < dev->maximum_num_containers; ++container) {
865 if ((dev->fsa_dev[container].config_waiting_on ==
866 le32_to_cpu(*(u32 *)aifcmd->data)) &&
867 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
868 dev->fsa_dev[container].config_waiting_on = 0;
872 case AifCmdEventNotify:
873 switch (le32_to_cpu(((u32 *)aifcmd->data)[0])) {
877 case AifEnAddContainer:
878 container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
879 if (container >= dev->maximum_num_containers)
881 dev->fsa_dev[container].config_needed = ADD;
882 dev->fsa_dev[container].config_waiting_on =
884 dev->fsa_dev[container].config_waiting_stamp = jiffies;
890 case AifEnDeleteContainer:
891 container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
892 if (container >= dev->maximum_num_containers)
894 dev->fsa_dev[container].config_needed = DELETE;
895 dev->fsa_dev[container].config_waiting_on =
897 dev->fsa_dev[container].config_waiting_stamp = jiffies;
901 * Container change detected. If we currently are not
902 * waiting on something else, setup to wait on a Config Change.
904 case AifEnContainerChange:
905 container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
906 if (container >= dev->maximum_num_containers)
908 if (dev->fsa_dev[container].config_waiting_on &&
909 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
911 dev->fsa_dev[container].config_needed = CHANGE;
912 dev->fsa_dev[container].config_waiting_on =
914 dev->fsa_dev[container].config_waiting_stamp = jiffies;
917 case AifEnConfigChange:
923 * If we are waiting on something and this happens to be
924 * that thing then set the re-configure flag.
926 if (container != (u32)-1) {
927 if (container >= dev->maximum_num_containers)
929 if ((dev->fsa_dev[container].config_waiting_on ==
930 le32_to_cpu(*(u32 *)aifcmd->data)) &&
931 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
932 dev->fsa_dev[container].config_waiting_on = 0;
933 } else for (container = 0;
934 container < dev->maximum_num_containers; ++container) {
935 if ((dev->fsa_dev[container].config_waiting_on ==
936 le32_to_cpu(*(u32 *)aifcmd->data)) &&
937 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
938 dev->fsa_dev[container].config_waiting_on = 0;
942 case AifCmdJobProgress:
944 * These are job progress AIF's. When a Clear is being
945 * done on a container it is initially created then hidden from
946 * the OS. When the clear completes we don't get a config
947 * change so we monitor the job status complete on a clear then
948 * wait for a container change.
951 if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero))
952 && ((((u32 *)aifcmd->data)[6] == ((u32 *)aifcmd->data)[5])
953 || (((u32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess)))) {
955 container < dev->maximum_num_containers;
958 * Stomp on all config sequencing for all
961 dev->fsa_dev[container].config_waiting_on =
962 AifEnContainerChange;
963 dev->fsa_dev[container].config_needed = ADD;
964 dev->fsa_dev[container].config_waiting_stamp =
968 if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero))
969 && (((u32 *)aifcmd->data)[6] == 0)
970 && (((u32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning))) {
972 container < dev->maximum_num_containers;
975 * Stomp on all config sequencing for all
978 dev->fsa_dev[container].config_waiting_on =
979 AifEnContainerChange;
980 dev->fsa_dev[container].config_needed = DELETE;
981 dev->fsa_dev[container].config_waiting_stamp =
988 device_config_needed = NOTHING;
989 for (container = 0; container < dev->maximum_num_containers;
991 if ((dev->fsa_dev[container].config_waiting_on == 0) &&
992 (dev->fsa_dev[container].config_needed != NOTHING) &&
993 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) {
994 device_config_needed =
995 dev->fsa_dev[container].config_needed;
996 dev->fsa_dev[container].config_needed = NOTHING;
1000 if (device_config_needed == NOTHING)
1004 * If we decided that a re-configuration needs to be done,
1005 * schedule it here on the way out the door, please close the door
1013 * Find the scsi_device associated with the SCSI address,
1014 * and mark it as changed, invalidating the cache. This deals
1015 * with changes to existing device IDs.
1018 if (!dev || !dev->scsi_host_ptr)
1021 * force reload of disk info via aac_probe_container
1023 if ((device_config_needed == CHANGE)
1024 && (dev->fsa_dev[container].valid == 1))
1025 dev->fsa_dev[container].valid = 2;
1026 if ((device_config_needed == CHANGE) ||
1027 (device_config_needed == ADD))
1028 aac_probe_container(dev, container);
1029 device = scsi_device_lookup(dev->scsi_host_ptr,
1030 CONTAINER_TO_CHANNEL(container),
1031 CONTAINER_TO_ID(container),
1032 CONTAINER_TO_LUN(container));
1034 switch (device_config_needed) {
1037 scsi_rescan_device(&device->sdev_gendev);
1042 scsi_device_put(device);
1044 if (device_config_needed == ADD) {
1045 scsi_add_device(dev->scsi_host_ptr,
1046 CONTAINER_TO_CHANNEL(container),
1047 CONTAINER_TO_ID(container),
1048 CONTAINER_TO_LUN(container));
1053 static int _aac_reset_adapter(struct aac_dev *aac)
1058 struct Scsi_Host *host;
1059 struct scsi_device *dev;
1060 struct scsi_cmnd *command;
1061 struct scsi_cmnd *command_list;
1066 * - in_reset is asserted, so no new i/o is getting to the
1068 * - The card is dead.
1070 host = aac->scsi_host_ptr;
1071 scsi_block_requests(host);
1072 aac_adapter_disable_int(aac);
1073 spin_unlock_irq(host->host_lock);
1074 kthread_stop(aac->thread);
1077 * If a positive health, means in a known DEAD PANIC
1078 * state and the adapter could be reset to `try again'.
1080 retval = aac_adapter_check_health(aac);
1082 retval = aac_adapter_sync_cmd(aac, IOP_RESET_ALWAYS,
1083 0, 0, 0, 0, 0, 0, &ret, NULL, NULL, NULL, NULL);
1085 retval = aac_adapter_sync_cmd(aac, IOP_RESET,
1086 0, 0, 0, 0, 0, 0, &ret, NULL, NULL, NULL, NULL);
1090 if (ret != 0x00000001) {
1095 index = aac->cardtype;
1098 * Re-initialize the adapter, first free resources, then carefully
1099 * apply the initialization sequence to come back again. Only risk
1100 * is a change in Firmware dropping cache, it is assumed the caller
1101 * will ensure that i/o is queisced and the card is flushed in that
1104 aac_fib_map_free(aac);
1105 aac->hw_fib_va = NULL;
1107 pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys);
1108 aac->comm_addr = NULL;
1112 free_irq(aac->pdev->irq, aac);
1113 kfree(aac->fsa_dev);
1114 aac->fsa_dev = NULL;
1115 if (aac_get_driver_ident(index)->quirks & AAC_QUIRK_31BIT) {
1116 if (((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK))) ||
1117 ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_32BIT_MASK))))
1120 if (((retval = pci_set_dma_mask(aac->pdev, 0x7FFFFFFFULL))) ||
1121 ((retval = pci_set_consistent_dma_mask(aac->pdev, 0x7FFFFFFFULL))))
1124 if ((retval = (*(aac_get_driver_ident(index)->init))(aac)))
1126 if (aac_get_driver_ident(index)->quirks & AAC_QUIRK_31BIT)
1127 if ((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK)))
1129 aac->thread = kthread_run(aac_command_thread, aac, aac->name);
1130 if (IS_ERR(aac->thread)) {
1131 retval = PTR_ERR(aac->thread);
1134 (void)aac_get_adapter_info(aac);
1135 quirks = aac_get_driver_ident(index)->quirks;
1136 if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) {
1137 host->sg_tablesize = 34;
1138 host->max_sectors = (host->sg_tablesize * 8) + 112;
1140 if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
1141 host->sg_tablesize = 17;
1142 host->max_sectors = (host->sg_tablesize * 8) + 112;
1144 aac_get_config_status(aac, 1);
1145 aac_get_containers(aac);
1147 * This is where the assumption that the Adapter is quiesced
1150 command_list = NULL;
1151 __shost_for_each_device(dev, host) {
1152 unsigned long flags;
1153 spin_lock_irqsave(&dev->list_lock, flags);
1154 list_for_each_entry(command, &dev->cmd_list, list)
1155 if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
1156 command->SCp.buffer = (struct scatterlist *)command_list;
1157 command_list = command;
1159 spin_unlock_irqrestore(&dev->list_lock, flags);
1161 while ((command = command_list)) {
1162 command_list = (struct scsi_cmnd *)command->SCp.buffer;
1163 command->SCp.buffer = NULL;
1164 command->result = DID_OK << 16
1165 | COMMAND_COMPLETE << 8
1166 | SAM_STAT_TASK_SET_FULL;
1167 command->SCp.phase = AAC_OWNER_ERROR_HANDLER;
1168 command->scsi_done(command);
1174 scsi_unblock_requests(host);
1175 spin_lock_irq(host->host_lock);
1179 int aac_check_health(struct aac_dev * aac)
1182 unsigned long time_now, flagv = 0;
1183 struct list_head * entry;
1184 struct Scsi_Host * host;
1186 /* Extending the scope of fib_lock slightly to protect aac->in_reset */
1187 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1190 if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) {
1191 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1198 * aac_aifcmd.command = AifCmdEventNotify = 1
1199 * aac_aifcmd.seqnum = 0xFFFFFFFF
1200 * aac_aifcmd.data[0] = AifEnExpEvent = 23
1201 * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3
1202 * aac.aifcmd.data[2] = AifHighPriority = 3
1203 * aac.aifcmd.data[3] = BlinkLED
1206 time_now = jiffies/HZ;
1207 entry = aac->fib_list.next;
1210 * For each Context that is on the
1211 * fibctxList, make a copy of the
1212 * fib, and then set the event to wake up the
1213 * thread that is waiting for it.
1215 while (entry != &aac->fib_list) {
1217 * Extract the fibctx
1219 struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next);
1220 struct hw_fib * hw_fib;
1223 * Check if the queue is getting
1226 if (fibctx->count > 20) {
1228 * It's *not* jiffies folks,
1229 * but jiffies / HZ, so do not
1232 u32 time_last = fibctx->jiffies;
1234 * Has it been > 2 minutes
1235 * since the last read off
1238 if ((time_now - time_last) > aif_timeout) {
1239 entry = entry->next;
1240 aac_close_fib_context(aac, fibctx);
1245 * Warning: no sleep allowed while
1248 hw_fib = kmalloc(sizeof(struct hw_fib), GFP_ATOMIC);
1249 fib = kmalloc(sizeof(struct fib), GFP_ATOMIC);
1250 if (fib && hw_fib) {
1251 struct aac_aifcmd * aif;
1253 memset(hw_fib, 0, sizeof(struct hw_fib));
1254 memset(fib, 0, sizeof(struct fib));
1255 fib->hw_fib = hw_fib;
1258 fib->type = FSAFS_NTC_FIB_CONTEXT;
1259 fib->size = sizeof (struct fib);
1260 fib->data = hw_fib->data;
1261 aif = (struct aac_aifcmd *)hw_fib->data;
1262 aif->command = cpu_to_le32(AifCmdEventNotify);
1263 aif->seqnum = cpu_to_le32(0xFFFFFFFF);
1264 aif->data[0] = cpu_to_le32(AifEnExpEvent);
1265 aif->data[1] = cpu_to_le32(AifExeFirmwarePanic);
1266 aif->data[2] = cpu_to_le32(AifHighPriority);
1267 aif->data[3] = cpu_to_le32(BlinkLED);
1270 * Put the FIB onto the
1273 list_add_tail(&fib->fiblink, &fibctx->fib_list);
1276 * Set the event to wake up the
1277 * thread that will waiting.
1279 up(&fibctx->wait_sem);
1281 printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
1285 entry = entry->next;
1288 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1291 printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED);
1295 printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
1297 host = aac->scsi_host_ptr;
1298 spin_lock_irqsave(host->host_lock, flagv);
1299 BlinkLED = _aac_reset_adapter(aac);
1300 spin_unlock_irqrestore(host->host_lock, flagv);
1310 * aac_command_thread - command processing thread
1311 * @dev: Adapter to monitor
1313 * Waits on the commandready event in it's queue. When the event gets set
1314 * it will pull FIBs off it's queue. It will continue to pull FIBs off
1315 * until the queue is empty. When the queue is empty it will wait for
1319 int aac_command_thread(void *data)
1321 struct aac_dev *dev = data;
1322 struct hw_fib *hw_fib, *hw_newfib;
1323 struct fib *fib, *newfib;
1324 struct aac_fib_context *fibctx;
1325 unsigned long flags;
1326 DECLARE_WAITQUEUE(wait, current);
1329 * We can only have one thread per adapter for AIF's.
1331 if (dev->aif_thread)
1335 * Let the DPC know it has a place to send the AIF's to.
1337 dev->aif_thread = 1;
1338 add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
1339 set_current_state(TASK_INTERRUPTIBLE);
1340 dprintk ((KERN_INFO "aac_command_thread start\n"));
1343 spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
1344 while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) {
1345 struct list_head *entry;
1346 struct aac_aifcmd * aifcmd;
1348 set_current_state(TASK_RUNNING);
1350 entry = dev->queues->queue[HostNormCmdQueue].cmdq.next;
1353 spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
1354 fib = list_entry(entry, struct fib, fiblink);
1356 * We will process the FIB here or pass it to a
1357 * worker thread that is TBD. We Really can't
1358 * do anything at this point since we don't have
1359 * anything defined for this thread to do.
1361 hw_fib = fib->hw_fib;
1362 memset(fib, 0, sizeof(struct fib));
1363 fib->type = FSAFS_NTC_FIB_CONTEXT;
1364 fib->size = sizeof( struct fib );
1365 fib->hw_fib = hw_fib;
1366 fib->data = hw_fib->data;
1369 * We only handle AifRequest fibs from the adapter.
1371 aifcmd = (struct aac_aifcmd *) hw_fib->data;
1372 if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) {
1373 /* Handle Driver Notify Events */
1374 aac_handle_aif(dev, fib);
1375 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
1376 aac_fib_adapter_complete(fib, (u16)sizeof(u32));
1378 struct list_head *entry;
1379 /* The u32 here is important and intended. We are using
1380 32bit wrapping time to fit the adapter field */
1382 u32 time_now, time_last;
1383 unsigned long flagv;
1385 struct hw_fib ** hw_fib_pool, ** hw_fib_p;
1386 struct fib ** fib_pool, ** fib_p;
1389 if ((aifcmd->command ==
1390 cpu_to_le32(AifCmdEventNotify)) ||
1392 cpu_to_le32(AifCmdJobProgress))) {
1393 aac_handle_aif(dev, fib);
1396 time_now = jiffies/HZ;
1399 * Warning: no sleep allowed while
1400 * holding spinlock. We take the estimate
1401 * and pre-allocate a set of fibs outside the
1404 num = le32_to_cpu(dev->init->AdapterFibsSize)
1405 / sizeof(struct hw_fib); /* some extra */
1406 spin_lock_irqsave(&dev->fib_lock, flagv);
1407 entry = dev->fib_list.next;
1408 while (entry != &dev->fib_list) {
1409 entry = entry->next;
1412 spin_unlock_irqrestore(&dev->fib_lock, flagv);
1416 && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL)))
1417 && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) {
1418 hw_fib_p = hw_fib_pool;
1420 while (hw_fib_p < &hw_fib_pool[num]) {
1421 if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) {
1425 if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) {
1426 kfree(*(--hw_fib_p));
1430 if ((num = hw_fib_p - hw_fib_pool) == 0) {
1440 spin_lock_irqsave(&dev->fib_lock, flagv);
1441 entry = dev->fib_list.next;
1443 * For each Context that is on the
1444 * fibctxList, make a copy of the
1445 * fib, and then set the event to wake up the
1446 * thread that is waiting for it.
1448 hw_fib_p = hw_fib_pool;
1450 while (entry != &dev->fib_list) {
1452 * Extract the fibctx
1454 fibctx = list_entry(entry, struct aac_fib_context, next);
1456 * Check if the queue is getting
1459 if (fibctx->count > 20)
1462 * It's *not* jiffies folks,
1463 * but jiffies / HZ so do not
1466 time_last = fibctx->jiffies;
1468 * Has it been > 2 minutes
1469 * since the last read off
1472 if ((time_now - time_last) > aif_timeout) {
1473 entry = entry->next;
1474 aac_close_fib_context(dev, fibctx);
1479 * Warning: no sleep allowed while
1482 if (hw_fib_p < &hw_fib_pool[num]) {
1483 hw_newfib = *hw_fib_p;
1484 *(hw_fib_p++) = NULL;
1488 * Make the copy of the FIB
1490 memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib));
1491 memcpy(newfib, fib, sizeof(struct fib));
1492 newfib->hw_fib = hw_newfib;
1494 * Put the FIB onto the
1497 list_add_tail(&newfib->fiblink, &fibctx->fib_list);
1500 * Set the event to wake up the
1501 * thread that is waiting.
1503 up(&fibctx->wait_sem);
1505 printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
1507 entry = entry->next;
1510 * Set the status of this FIB
1512 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
1513 aac_fib_adapter_complete(fib, sizeof(u32));
1514 spin_unlock_irqrestore(&dev->fib_lock, flagv);
1515 /* Free up the remaining resources */
1516 hw_fib_p = hw_fib_pool;
1518 while (hw_fib_p < &hw_fib_pool[num]) {
1528 spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
1531 * There are no more AIF's
1533 spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
1536 if (kthread_should_stop())
1538 set_current_state(TASK_INTERRUPTIBLE);
1541 remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
1542 dev->aif_thread = 0;