2 * Adaptec AAC series RAID controller driver
3 * (c) Copyright 2001 Red Hat Inc.
5 * based on the old aacraid driver that is..
6 * Adaptec aacraid device driver for Linux.
8 * Copyright (c) 2000-2010 Adaptec, Inc.
9 * 2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2, or (at your option)
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; see the file COPYING. If not, write to
23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
28 * Abstract: Contain all routines that are required for FSA host/adapter
33 #include <linux/kernel.h>
34 #include <linux/init.h>
35 #include <linux/types.h>
36 #include <linux/sched.h>
37 #include <linux/pci.h>
38 #include <linux/spinlock.h>
39 #include <linux/slab.h>
40 #include <linux/completion.h>
41 #include <linux/blkdev.h>
42 #include <linux/delay.h>
43 #include <linux/kthread.h>
44 #include <linux/interrupt.h>
45 #include <linux/semaphore.h>
46 #include <scsi/scsi.h>
47 #include <scsi/scsi_host.h>
48 #include <scsi/scsi_device.h>
49 #include <scsi/scsi_cmnd.h>
54 * fib_map_alloc - allocate the fib objects
55 * @dev: Adapter to allocate for
57 * Allocate and map the shared PCI space for the FIB blocks used to
58 * talk to the Adaptec firmware.
61 static int fib_map_alloc(struct aac_dev *dev)
64 "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n",
65 dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue,
66 AAC_NUM_MGT_FIB, &dev->hw_fib_pa));
67 dev->hw_fib_va = pci_alloc_consistent(dev->pdev,
68 (dev->max_fib_size + sizeof(struct aac_fib_xporthdr))
69 * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1),
71 if (dev->hw_fib_va == NULL)
77 * aac_fib_map_free - free the fib objects
78 * @dev: Adapter to free
80 * Free the PCI mappings and the memory allocated for FIB blocks
84 void aac_fib_map_free(struct aac_dev *dev)
86 if (dev->hw_fib_va && dev->max_fib_size) {
87 pci_free_consistent(dev->pdev,
89 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)),
90 dev->hw_fib_va, dev->hw_fib_pa);
92 dev->hw_fib_va = NULL;
96 void aac_fib_vector_assign(struct aac_dev *dev)
100 struct fib *fibptr = NULL;
102 for (i = 0, fibptr = &dev->fibs[i];
103 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
105 if ((dev->max_msix == 1) ||
106 (i > ((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1)
107 - dev->vector_cap))) {
108 fibptr->vector_no = 0;
110 fibptr->vector_no = vector;
112 if (vector == dev->max_msix)
119 * aac_fib_setup - setup the fibs
120 * @dev: Adapter to set up
122 * Allocate the PCI space for the fibs, map it and then initialise the
123 * fib area, the unmapped fib data and also the free list
126 int aac_fib_setup(struct aac_dev * dev)
129 struct hw_fib *hw_fib;
130 dma_addr_t hw_fib_pa;
133 while (((i = fib_map_alloc(dev)) == -ENOMEM)
134 && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) {
135 dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1);
136 dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB;
141 /* 32 byte alignment for PMC */
142 hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1);
143 dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
144 (hw_fib_pa - dev->hw_fib_pa));
145 dev->hw_fib_pa = hw_fib_pa;
146 memset(dev->hw_fib_va, 0,
147 (dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) *
148 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
150 /* add Xport header */
151 dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
152 sizeof(struct aac_fib_xporthdr));
153 dev->hw_fib_pa += sizeof(struct aac_fib_xporthdr);
155 hw_fib = dev->hw_fib_va;
156 hw_fib_pa = dev->hw_fib_pa;
158 * Initialise the fibs
160 for (i = 0, fibptr = &dev->fibs[i];
161 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
165 fibptr->size = sizeof(struct fib);
167 fibptr->hw_fib_va = hw_fib;
168 fibptr->data = (void *) fibptr->hw_fib_va->data;
169 fibptr->next = fibptr+1; /* Forward chain the fibs */
170 sema_init(&fibptr->event_wait, 0);
171 spin_lock_init(&fibptr->event_lock);
172 hw_fib->header.XferState = cpu_to_le32(0xffffffff);
173 hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size);
174 fibptr->hw_fib_pa = hw_fib_pa;
175 hw_fib = (struct hw_fib *)((unsigned char *)hw_fib +
176 dev->max_fib_size + sizeof(struct aac_fib_xporthdr));
177 hw_fib_pa = hw_fib_pa +
178 dev->max_fib_size + sizeof(struct aac_fib_xporthdr);
182 *Assign vector numbers to fibs
184 aac_fib_vector_assign(dev);
187 * Add the fib chain to the free list
189 dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL;
191 * Set 8 fibs aside for management tools
193 dev->free_fib = &dev->fibs[dev->scsi_host_ptr->can_queue];
198 * aac_fib_alloc_tag-allocate a fib using tags
199 * @dev: Adapter to allocate the fib for
201 * Allocate a fib from the adapter fib pool using tags
202 * from the blk layer.
205 struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd)
209 fibptr = &dev->fibs[scmd->request->tag];
211 * Null out fields that depend on being zero at the start of
214 fibptr->hw_fib_va->header.XferState = 0;
215 fibptr->type = FSAFS_NTC_FIB_CONTEXT;
216 fibptr->callback_data = NULL;
217 fibptr->callback = NULL;
223 * aac_fib_alloc - allocate a fib
224 * @dev: Adapter to allocate the fib for
226 * Allocate a fib from the adapter fib pool. If the pool is empty we
230 struct fib *aac_fib_alloc(struct aac_dev *dev)
234 spin_lock_irqsave(&dev->fib_lock, flags);
235 fibptr = dev->free_fib;
237 spin_unlock_irqrestore(&dev->fib_lock, flags);
240 dev->free_fib = fibptr->next;
241 spin_unlock_irqrestore(&dev->fib_lock, flags);
243 * Set the proper node type code and node byte size
245 fibptr->type = FSAFS_NTC_FIB_CONTEXT;
246 fibptr->size = sizeof(struct fib);
248 * Null out fields that depend on being zero at the start of
251 fibptr->hw_fib_va->header.XferState = 0;
253 fibptr->callback = NULL;
254 fibptr->callback_data = NULL;
260 * aac_fib_free - free a fib
261 * @fibptr: fib to free up
263 * Frees up a fib and places it on the appropriate queue
266 void aac_fib_free(struct fib *fibptr)
270 if (fibptr->done == 2)
273 spin_lock_irqsave(&fibptr->dev->fib_lock, flags);
274 if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
275 aac_config.fib_timeouts++;
276 if (fibptr->hw_fib_va->header.XferState != 0) {
277 printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
279 le32_to_cpu(fibptr->hw_fib_va->header.XferState));
281 fibptr->next = fibptr->dev->free_fib;
282 fibptr->dev->free_fib = fibptr;
283 spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags);
287 * aac_fib_init - initialise a fib
288 * @fibptr: The fib to initialize
290 * Set up the generic fib fields ready for use
293 void aac_fib_init(struct fib *fibptr)
295 struct hw_fib *hw_fib = fibptr->hw_fib_va;
297 memset(&hw_fib->header, 0, sizeof(struct aac_fibhdr));
298 hw_fib->header.StructType = FIB_MAGIC;
299 hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size);
300 hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable);
301 hw_fib->header.u.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa);
302 hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size);
306 * fib_deallocate - deallocate a fib
307 * @fibptr: fib to deallocate
309 * Will deallocate and return to the free pool the FIB pointed to by the
313 static void fib_dealloc(struct fib * fibptr)
315 struct hw_fib *hw_fib = fibptr->hw_fib_va;
316 hw_fib->header.XferState = 0;
320 * Commuication primitives define and support the queuing method we use to
321 * support host to adapter commuication. All queue accesses happen through
322 * these routines and are the only routines which have a knowledge of the
323 * how these queues are implemented.
327 * aac_get_entry - get a queue entry
330 * @entry: Entry return
331 * @index: Index return
332 * @nonotify: notification control
334 * With a priority the routine returns a queue entry if the queue has free entries. If the queue
335 * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
339 static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify)
341 struct aac_queue * q;
345 * All of the queues wrap when they reach the end, so we check
346 * to see if they have reached the end and if they have we just
347 * set the index back to zero. This is a wrap. You could or off
348 * the high bits in all updates but this is a bit faster I think.
351 q = &dev->queues->queue[qid];
353 idx = *index = le32_to_cpu(*(q->headers.producer));
354 /* Interrupt Moderation, only interrupt for first two entries */
355 if (idx != le32_to_cpu(*(q->headers.consumer))) {
357 if (qid == AdapNormCmdQueue)
358 idx = ADAP_NORM_CMD_ENTRIES;
360 idx = ADAP_NORM_RESP_ENTRIES;
362 if (idx != le32_to_cpu(*(q->headers.consumer)))
366 if (qid == AdapNormCmdQueue) {
367 if (*index >= ADAP_NORM_CMD_ENTRIES)
368 *index = 0; /* Wrap to front of the Producer Queue. */
370 if (*index >= ADAP_NORM_RESP_ENTRIES)
371 *index = 0; /* Wrap to front of the Producer Queue. */
375 if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) {
376 printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
377 qid, atomic_read(&q->numpending));
380 *entry = q->base + *index;
386 * aac_queue_get - get the next free QE
388 * @index: Returned index
389 * @priority: Priority of fib
390 * @fib: Fib to associate with the queue entry
391 * @wait: Wait if queue full
392 * @fibptr: Driver fib object to go with fib
393 * @nonotify: Don't notify the adapter
395 * Gets the next free QE off the requested priorty adapter command
396 * queue and associates the Fib with the QE. The QE represented by
397 * index is ready to insert on the queue when this routine returns
401 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)
403 struct aac_entry * entry = NULL;
406 if (qid == AdapNormCmdQueue) {
407 /* if no entries wait for some if caller wants to */
408 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
409 printk(KERN_ERR "GetEntries failed\n");
412 * Setup queue entry with a command, status and fib mapped
414 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
417 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
418 /* if no entries wait for some if caller wants to */
421 * Setup queue entry with command, status and fib mapped
423 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
424 entry->addr = hw_fib->header.SenderFibAddress;
425 /* Restore adapters pointer to the FIB */
426 hw_fib->header.u.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */
430 * If MapFib is true than we need to map the Fib and put pointers
431 * in the queue entry.
434 entry->addr = cpu_to_le32(fibptr->hw_fib_pa);
439 * Define the highest level of host to adapter communication routines.
440 * These routines will support host to adapter FS commuication. These
441 * routines have no knowledge of the commuication method used. This level
442 * sends and receives FIBs. This level has no knowledge of how these FIBs
443 * get passed back and forth.
447 * aac_fib_send - send a fib to the adapter
448 * @command: Command to send
450 * @size: Size of fib data area
451 * @priority: Priority of Fib
452 * @wait: Async/sync select
453 * @reply: True if a reply is wanted
454 * @callback: Called with reply
455 * @callback_data: Passed to callback
457 * Sends the requested FIB to the adapter and optionally will wait for a
458 * response FIB. If the caller does not wish to wait for a response than
459 * an event to wait on must be supplied. This event will be set when a
460 * response FIB is received from the adapter.
463 int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
464 int priority, int wait, int reply, fib_callback callback,
467 struct aac_dev * dev = fibptr->dev;
468 struct hw_fib * hw_fib = fibptr->hw_fib_va;
469 unsigned long flags = 0;
470 unsigned long mflags = 0;
471 unsigned long sflags = 0;
474 if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
477 * There are 5 cases with the wait and response requested flags.
478 * The only invalid cases are if the caller requests to wait and
479 * does not request a response and if the caller does not want a
480 * response and the Fib is not allocated from pool. If a response
481 * is not requesed the Fib will just be deallocaed by the DPC
482 * routine when the response comes back from the adapter. No
483 * further processing will be done besides deleting the Fib. We
484 * will have a debug mode where the adapter can notify the host
485 * it had a problem and the host can log that fact.
488 if (wait && !reply) {
490 } else if (!wait && reply) {
491 hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected);
492 FIB_COUNTER_INCREMENT(aac_config.AsyncSent);
493 } else if (!wait && !reply) {
494 hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected);
495 FIB_COUNTER_INCREMENT(aac_config.NoResponseSent);
496 } else if (wait && reply) {
497 hw_fib->header.XferState |= cpu_to_le32(ResponseExpected);
498 FIB_COUNTER_INCREMENT(aac_config.NormalSent);
501 * Map the fib into 32bits by using the fib number
504 hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2);
505 hw_fib->header.Handle = (u32)(fibptr - dev->fibs) + 1;
507 * Set FIB state to indicate where it came from and if we want a
508 * response from the adapter. Also load the command from the
511 * Map the hw fib pointer as a 32bit value
513 hw_fib->header.Command = cpu_to_le16(command);
514 hw_fib->header.XferState |= cpu_to_le32(SentFromHost);
516 * Set the size of the Fib we want to send to the adapter
518 hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size);
519 if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) {
523 * Get a queue entry connect the FIB to it and send an notify
524 * the adapter a command is ready.
526 hw_fib->header.XferState |= cpu_to_le32(NormalPriority);
529 * Fill in the Callback and CallbackContext if we are not
533 fibptr->callback = callback;
534 fibptr->callback_data = callback_data;
535 fibptr->flags = FIB_CONTEXT_FLAG;
540 FIB_COUNTER_INCREMENT(aac_config.FibsSent);
542 dprintk((KERN_DEBUG "Fib contents:.\n"));
543 dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command)));
544 dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command)));
545 dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState)));
546 dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va));
547 dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
548 dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr));
555 spin_lock_irqsave(&dev->manage_lock, mflags);
556 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) {
557 printk(KERN_INFO "No management Fibs Available:%d\n",
558 dev->management_fib_count);
559 spin_unlock_irqrestore(&dev->manage_lock, mflags);
562 dev->management_fib_count++;
563 spin_unlock_irqrestore(&dev->manage_lock, mflags);
564 spin_lock_irqsave(&fibptr->event_lock, flags);
567 if (dev->sync_mode) {
569 spin_unlock_irqrestore(&fibptr->event_lock, flags);
570 spin_lock_irqsave(&dev->sync_lock, sflags);
572 list_add_tail(&fibptr->fiblink, &dev->sync_fib_list);
573 spin_unlock_irqrestore(&dev->sync_lock, sflags);
575 dev->sync_fib = fibptr;
576 spin_unlock_irqrestore(&dev->sync_lock, sflags);
577 aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB,
578 (u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0,
579 NULL, NULL, NULL, NULL, NULL);
582 fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
583 if (down_interruptible(&fibptr->event_wait)) {
584 fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT;
592 if (aac_adapter_deliver(fibptr) != 0) {
593 printk(KERN_ERR "aac_fib_send: returned -EBUSY\n");
595 spin_unlock_irqrestore(&fibptr->event_lock, flags);
596 spin_lock_irqsave(&dev->manage_lock, mflags);
597 dev->management_fib_count--;
598 spin_unlock_irqrestore(&dev->manage_lock, mflags);
605 * If the caller wanted us to wait for response wait now.
609 spin_unlock_irqrestore(&fibptr->event_lock, flags);
610 /* Only set for first known interruptable command */
613 * *VERY* Dangerous to time out a command, the
614 * assumption is made that we have no hope of
615 * functioning because an interrupt routing or other
616 * hardware failure has occurred.
618 unsigned long timeout = jiffies + (180 * HZ); /* 3 minutes */
619 while (down_trylock(&fibptr->event_wait)) {
621 if (time_is_before_eq_jiffies(timeout)) {
622 struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue];
623 atomic_dec(&q->numpending);
625 printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n"
626 "Usually a result of a PCI interrupt routing problem;\n"
627 "update mother board BIOS or consider utilizing one of\n"
628 "the SAFE mode kernel options (acpi, apic etc)\n");
632 if ((blink = aac_adapter_check_health(dev)) > 0) {
634 printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n"
635 "Usually a result of a serious unrecoverable hardware problem\n",
641 * Allow other processes / CPUS to use core
645 } else if (down_interruptible(&fibptr->event_wait)) {
646 /* Do nothing ... satisfy
647 * down_interruptible must_check */
650 spin_lock_irqsave(&fibptr->event_lock, flags);
651 if (fibptr->done == 0) {
652 fibptr->done = 2; /* Tell interrupt we aborted */
653 spin_unlock_irqrestore(&fibptr->event_lock, flags);
656 spin_unlock_irqrestore(&fibptr->event_lock, flags);
657 BUG_ON(fibptr->done == 0);
659 if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
664 * If the user does not want a response than return success otherwise
674 * aac_consumer_get - get the top of the queue
677 * @entry: Return entry
679 * Will return a pointer to the entry on the top of the queue requested that
680 * we are a consumer of, and return the address of the queue entry. It does
681 * not change the state of the queue.
684 int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry)
688 if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) {
692 * The consumer index must be wrapped if we have reached
693 * the end of the queue, else we just use the entry
694 * pointed to by the header index
696 if (le32_to_cpu(*q->headers.consumer) >= q->entries)
699 index = le32_to_cpu(*q->headers.consumer);
700 *entry = q->base + index;
707 * aac_consumer_free - free consumer entry
712 * Frees up the current top of the queue we are a consumer of. If the
713 * queue was full notify the producer that the queue is no longer full.
716 void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid)
721 if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer))
724 if (le32_to_cpu(*q->headers.consumer) >= q->entries)
725 *q->headers.consumer = cpu_to_le32(1);
727 le32_add_cpu(q->headers.consumer, 1);
732 case HostNormCmdQueue:
733 notify = HostNormCmdNotFull;
735 case HostNormRespQueue:
736 notify = HostNormRespNotFull;
742 aac_adapter_notify(dev, notify);
747 * aac_fib_adapter_complete - complete adapter issued fib
748 * @fibptr: fib to complete
751 * Will do all necessary work to complete a FIB that was sent from
755 int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
757 struct hw_fib * hw_fib = fibptr->hw_fib_va;
758 struct aac_dev * dev = fibptr->dev;
759 struct aac_queue * q;
760 unsigned long nointr = 0;
761 unsigned long qflags;
763 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
764 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
769 if (hw_fib->header.XferState == 0) {
770 if (dev->comm_interface == AAC_COMM_MESSAGE)
775 * If we plan to do anything check the structure type first.
777 if (hw_fib->header.StructType != FIB_MAGIC &&
778 hw_fib->header.StructType != FIB_MAGIC2 &&
779 hw_fib->header.StructType != FIB_MAGIC2_64) {
780 if (dev->comm_interface == AAC_COMM_MESSAGE)
785 * This block handles the case where the adapter had sent us a
786 * command and we have finished processing the command. We
787 * call completeFib when we are done processing the command
788 * and want to send a response back to the adapter. This will
789 * send the completed cdb to the adapter.
791 if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) {
792 if (dev->comm_interface == AAC_COMM_MESSAGE) {
796 hw_fib->header.XferState |= cpu_to_le32(HostProcessed);
798 size += sizeof(struct aac_fibhdr);
799 if (size > le16_to_cpu(hw_fib->header.SenderSize))
801 hw_fib->header.Size = cpu_to_le16(size);
803 q = &dev->queues->queue[AdapNormRespQueue];
804 spin_lock_irqsave(q->lock, qflags);
805 aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr);
806 *(q->headers.producer) = cpu_to_le32(index + 1);
807 spin_unlock_irqrestore(q->lock, qflags);
808 if (!(nointr & (int)aac_config.irq_mod))
809 aac_adapter_notify(dev, AdapNormRespQueue);
812 printk(KERN_WARNING "aac_fib_adapter_complete: "
813 "Unknown xferstate detected.\n");
820 * aac_fib_complete - fib completion handler
821 * @fib: FIB to complete
823 * Will do all necessary work to complete a FIB.
826 int aac_fib_complete(struct fib *fibptr)
828 struct hw_fib * hw_fib = fibptr->hw_fib_va;
831 * Check for a fib which has already been completed
834 if (hw_fib->header.XferState == 0)
837 * If we plan to do anything check the structure type first.
840 if (hw_fib->header.StructType != FIB_MAGIC &&
841 hw_fib->header.StructType != FIB_MAGIC2 &&
842 hw_fib->header.StructType != FIB_MAGIC2_64)
845 * This block completes a cdb which orginated on the host and we
846 * just need to deallocate the cdb or reinit it. At this point the
847 * command is complete that we had sent to the adapter and this
848 * cdb could be reused.
851 if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) &&
852 (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)))
856 else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost))
859 * This handles the case when the host has aborted the I/O
860 * to the adapter because the adapter is not responding
863 } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) {
872 * aac_printf - handle printf from firmware
876 * Print a message passed to us by the controller firmware on the
880 void aac_printf(struct aac_dev *dev, u32 val)
882 char *cp = dev->printfbuf;
883 if (dev->printf_enabled)
885 int length = val & 0xffff;
886 int level = (val >> 16) & 0xffff;
889 * The size of the printfbuf is set in port.c
890 * There is no variable or define for it
896 if (level == LOG_AAC_HIGH_ERROR)
897 printk(KERN_WARNING "%s:%s", dev->name, cp);
899 printk(KERN_INFO "%s:%s", dev->name, cp);
904 static inline int aac_aif_data(struct aac_aifcmd *aifcmd, uint32_t index)
906 return le32_to_cpu(((__le32 *)aifcmd->data)[index]);
910 static void aac_handle_aif_bu(struct aac_dev *dev, struct aac_aifcmd *aifcmd)
912 switch (aac_aif_data(aifcmd, 1)) {
913 case AifBuCacheDataLoss:
914 if (aac_aif_data(aifcmd, 2))
915 dev_info(&dev->pdev->dev, "Backup unit had cache data loss - [%d]\n",
916 aac_aif_data(aifcmd, 2));
918 dev_info(&dev->pdev->dev, "Backup Unit had cache data loss\n");
920 case AifBuCacheDataRecover:
921 if (aac_aif_data(aifcmd, 2))
922 dev_info(&dev->pdev->dev, "DDR cache data recovered successfully - [%d]\n",
923 aac_aif_data(aifcmd, 2));
925 dev_info(&dev->pdev->dev, "DDR cache data recovered successfully\n");
931 * aac_handle_aif - Handle a message from the firmware
932 * @dev: Which adapter this fib is from
933 * @fibptr: Pointer to fibptr from adapter
935 * This routine handles a driver notify fib from the adapter and
936 * dispatches it to the appropriate routine for handling.
939 #define AIF_SNIFF_TIMEOUT (500*HZ)
940 static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
942 struct hw_fib * hw_fib = fibptr->hw_fib_va;
943 struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data;
944 u32 channel, id, lun, container;
945 struct scsi_device *device;
951 } device_config_needed = NOTHING;
953 /* Sniff for container changes */
955 if (!dev || !dev->fsa_dev)
957 container = channel = id = lun = (u32)-1;
960 * We have set this up to try and minimize the number of
961 * re-configures that take place. As a result of this when
962 * certain AIF's come in we will set a flag waiting for another
963 * type of AIF before setting the re-config flag.
965 switch (le32_to_cpu(aifcmd->command)) {
966 case AifCmdDriverNotify:
967 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
968 case AifRawDeviceRemove:
969 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
970 if ((container >> 28)) {
974 channel = (container >> 24) & 0xF;
975 if (channel >= dev->maximum_num_channels) {
979 id = container & 0xFFFF;
980 if (id >= dev->maximum_num_physicals) {
984 lun = (container >> 16) & 0xFF;
986 channel = aac_phys_to_logical(channel);
987 device_config_needed =
988 (((__le32 *)aifcmd->data)[0] ==
989 cpu_to_le32(AifRawDeviceRemove)) ? DELETE : ADD;
991 if (device_config_needed == ADD) {
992 device = scsi_device_lookup(
996 scsi_remove_device(device);
997 scsi_device_put(device);
1002 * Morph or Expand complete
1004 case AifDenMorphComplete:
1005 case AifDenVolumeExtendComplete:
1006 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1007 if (container >= dev->maximum_num_containers)
1011 * Find the scsi_device associated with the SCSI
1012 * address. Make sure we have the right array, and if
1013 * so set the flag to initiate a new re-config once we
1014 * see an AifEnConfigChange AIF come through.
1017 if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) {
1018 device = scsi_device_lookup(dev->scsi_host_ptr,
1019 CONTAINER_TO_CHANNEL(container),
1020 CONTAINER_TO_ID(container),
1021 CONTAINER_TO_LUN(container));
1023 dev->fsa_dev[container].config_needed = CHANGE;
1024 dev->fsa_dev[container].config_waiting_on = AifEnConfigChange;
1025 dev->fsa_dev[container].config_waiting_stamp = jiffies;
1026 scsi_device_put(device);
1032 * If we are waiting on something and this happens to be
1033 * that thing then set the re-configure flag.
1035 if (container != (u32)-1) {
1036 if (container >= dev->maximum_num_containers)
1038 if ((dev->fsa_dev[container].config_waiting_on ==
1039 le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1040 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1041 dev->fsa_dev[container].config_waiting_on = 0;
1042 } else for (container = 0;
1043 container < dev->maximum_num_containers; ++container) {
1044 if ((dev->fsa_dev[container].config_waiting_on ==
1045 le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1046 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1047 dev->fsa_dev[container].config_waiting_on = 0;
1051 case AifCmdEventNotify:
1052 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
1053 case AifEnBatteryEvent:
1054 dev->cache_protected =
1055 (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3));
1060 case AifEnAddContainer:
1061 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1062 if (container >= dev->maximum_num_containers)
1064 dev->fsa_dev[container].config_needed = ADD;
1065 dev->fsa_dev[container].config_waiting_on =
1067 dev->fsa_dev[container].config_waiting_stamp = jiffies;
1073 case AifEnDeleteContainer:
1074 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1075 if (container >= dev->maximum_num_containers)
1077 dev->fsa_dev[container].config_needed = DELETE;
1078 dev->fsa_dev[container].config_waiting_on =
1080 dev->fsa_dev[container].config_waiting_stamp = jiffies;
1084 * Container change detected. If we currently are not
1085 * waiting on something else, setup to wait on a Config Change.
1087 case AifEnContainerChange:
1088 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1089 if (container >= dev->maximum_num_containers)
1091 if (dev->fsa_dev[container].config_waiting_on &&
1092 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1094 dev->fsa_dev[container].config_needed = CHANGE;
1095 dev->fsa_dev[container].config_waiting_on =
1097 dev->fsa_dev[container].config_waiting_stamp = jiffies;
1100 case AifEnConfigChange:
1104 case AifEnDeleteJBOD:
1105 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1106 if ((container >> 28)) {
1107 container = (u32)-1;
1110 channel = (container >> 24) & 0xF;
1111 if (channel >= dev->maximum_num_channels) {
1112 container = (u32)-1;
1115 id = container & 0xFFFF;
1116 if (id >= dev->maximum_num_physicals) {
1117 container = (u32)-1;
1120 lun = (container >> 16) & 0xFF;
1121 container = (u32)-1;
1122 channel = aac_phys_to_logical(channel);
1123 device_config_needed =
1124 (((__le32 *)aifcmd->data)[0] ==
1125 cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE;
1126 if (device_config_needed == ADD) {
1127 device = scsi_device_lookup(dev->scsi_host_ptr,
1132 scsi_remove_device(device);
1133 scsi_device_put(device);
1138 case AifEnEnclosureManagement:
1140 * If in JBOD mode, automatic exposure of new
1141 * physical target to be suppressed until configured.
1145 switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) {
1146 case EM_DRIVE_INSERTION:
1147 case EM_DRIVE_REMOVAL:
1148 case EM_SES_DRIVE_INSERTION:
1149 case EM_SES_DRIVE_REMOVAL:
1150 container = le32_to_cpu(
1151 ((__le32 *)aifcmd->data)[2]);
1152 if ((container >> 28)) {
1153 container = (u32)-1;
1156 channel = (container >> 24) & 0xF;
1157 if (channel >= dev->maximum_num_channels) {
1158 container = (u32)-1;
1161 id = container & 0xFFFF;
1162 lun = (container >> 16) & 0xFF;
1163 container = (u32)-1;
1164 if (id >= dev->maximum_num_physicals) {
1165 /* legacy dev_t ? */
1166 if ((0x2000 <= id) || lun || channel ||
1167 ((channel = (id >> 7) & 0x3F) >=
1168 dev->maximum_num_channels))
1170 lun = (id >> 4) & 7;
1173 channel = aac_phys_to_logical(channel);
1174 device_config_needed =
1175 ((((__le32 *)aifcmd->data)[3]
1176 == cpu_to_le32(EM_DRIVE_INSERTION)) ||
1177 (((__le32 *)aifcmd->data)[3]
1178 == cpu_to_le32(EM_SES_DRIVE_INSERTION))) ?
1183 case AifBuManagerEvent:
1184 aac_handle_aif_bu(dev, aifcmd);
1189 * If we are waiting on something and this happens to be
1190 * that thing then set the re-configure flag.
1192 if (container != (u32)-1) {
1193 if (container >= dev->maximum_num_containers)
1195 if ((dev->fsa_dev[container].config_waiting_on ==
1196 le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1197 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1198 dev->fsa_dev[container].config_waiting_on = 0;
1199 } else for (container = 0;
1200 container < dev->maximum_num_containers; ++container) {
1201 if ((dev->fsa_dev[container].config_waiting_on ==
1202 le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1203 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1204 dev->fsa_dev[container].config_waiting_on = 0;
1208 case AifCmdJobProgress:
1210 * These are job progress AIF's. When a Clear is being
1211 * done on a container it is initially created then hidden from
1212 * the OS. When the clear completes we don't get a config
1213 * change so we monitor the job status complete on a clear then
1214 * wait for a container change.
1217 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
1218 (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] ||
1219 ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) {
1221 container < dev->maximum_num_containers;
1224 * Stomp on all config sequencing for all
1227 dev->fsa_dev[container].config_waiting_on =
1228 AifEnContainerChange;
1229 dev->fsa_dev[container].config_needed = ADD;
1230 dev->fsa_dev[container].config_waiting_stamp =
1234 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
1235 ((__le32 *)aifcmd->data)[6] == 0 &&
1236 ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) {
1238 container < dev->maximum_num_containers;
1241 * Stomp on all config sequencing for all
1244 dev->fsa_dev[container].config_waiting_on =
1245 AifEnContainerChange;
1246 dev->fsa_dev[container].config_needed = DELETE;
1247 dev->fsa_dev[container].config_waiting_stamp =
1256 if (device_config_needed == NOTHING)
1257 for (; container < dev->maximum_num_containers; ++container) {
1258 if ((dev->fsa_dev[container].config_waiting_on == 0) &&
1259 (dev->fsa_dev[container].config_needed != NOTHING) &&
1260 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) {
1261 device_config_needed =
1262 dev->fsa_dev[container].config_needed;
1263 dev->fsa_dev[container].config_needed = NOTHING;
1264 channel = CONTAINER_TO_CHANNEL(container);
1265 id = CONTAINER_TO_ID(container);
1266 lun = CONTAINER_TO_LUN(container);
1270 if (device_config_needed == NOTHING)
1274 * If we decided that a re-configuration needs to be done,
1275 * schedule it here on the way out the door, please close the door
1280 * Find the scsi_device associated with the SCSI address,
1281 * and mark it as changed, invalidating the cache. This deals
1282 * with changes to existing device IDs.
1285 if (!dev || !dev->scsi_host_ptr)
1288 * force reload of disk info via aac_probe_container
1290 if ((channel == CONTAINER_CHANNEL) &&
1291 (device_config_needed != NOTHING)) {
1292 if (dev->fsa_dev[container].valid == 1)
1293 dev->fsa_dev[container].valid = 2;
1294 aac_probe_container(dev, container);
1296 device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun);
1298 switch (device_config_needed) {
1300 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1301 scsi_remove_device(device);
1303 if (scsi_device_online(device)) {
1304 scsi_device_set_state(device, SDEV_OFFLINE);
1305 sdev_printk(KERN_INFO, device,
1306 "Device offlined - %s\n",
1307 (channel == CONTAINER_CHANNEL) ?
1309 "enclosure services event");
1314 if (!scsi_device_online(device)) {
1315 sdev_printk(KERN_INFO, device,
1316 "Device online - %s\n",
1317 (channel == CONTAINER_CHANNEL) ?
1319 "enclosure services event");
1320 scsi_device_set_state(device, SDEV_RUNNING);
1324 if ((channel == CONTAINER_CHANNEL)
1325 && (!dev->fsa_dev[container].valid)) {
1326 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1327 scsi_remove_device(device);
1329 if (!scsi_device_online(device))
1331 scsi_device_set_state(device, SDEV_OFFLINE);
1332 sdev_printk(KERN_INFO, device,
1333 "Device offlined - %s\n",
1338 scsi_rescan_device(&device->sdev_gendev);
1343 scsi_device_put(device);
1344 device_config_needed = NOTHING;
1346 if (device_config_needed == ADD)
1347 scsi_add_device(dev->scsi_host_ptr, channel, id, lun);
1348 if (channel == CONTAINER_CHANNEL) {
1350 device_config_needed = NOTHING;
1355 static int _aac_reset_adapter(struct aac_dev *aac, int forced)
1359 struct Scsi_Host *host;
1360 struct scsi_device *dev;
1361 struct scsi_cmnd *command;
1362 struct scsi_cmnd *command_list;
1367 * - host is locked, unless called by the aacraid thread.
1368 * (a matter of convenience, due to legacy issues surrounding
1369 * eh_host_adapter_reset).
1370 * - in_reset is asserted, so no new i/o is getting to the
1372 * - The card is dead, or will be very shortly ;-/ so no new
1373 * commands are completing in the interrupt service.
1375 host = aac->scsi_host_ptr;
1376 scsi_block_requests(host);
1377 aac_adapter_disable_int(aac);
1378 if (aac->thread && aac->thread->pid != current->pid) {
1379 spin_unlock_irq(host->host_lock);
1380 kthread_stop(aac->thread);
1386 * If a positive health, means in a known DEAD PANIC
1387 * state and the adapter could be reset to `try again'.
1389 retval = aac_adapter_restart(aac, forced ? 0 : aac_adapter_check_health(aac));
1395 * Loop through the fibs, close the synchronous FIBS
1397 for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) {
1398 struct fib *fib = &aac->fibs[index];
1399 if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) &&
1400 (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) {
1401 unsigned long flagv;
1402 spin_lock_irqsave(&fib->event_lock, flagv);
1403 up(&fib->event_wait);
1404 spin_unlock_irqrestore(&fib->event_lock, flagv);
1409 /* Give some extra time for ioctls to complete. */
1412 index = aac->cardtype;
1415 * Re-initialize the adapter, first free resources, then carefully
1416 * apply the initialization sequence to come back again. Only risk
1417 * is a change in Firmware dropping cache, it is assumed the caller
1418 * will ensure that i/o is queisced and the card is flushed in that
1422 aac_fib_map_free(aac);
1423 pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys);
1424 aac->comm_addr = NULL;
1428 kfree(aac->fsa_dev);
1429 aac->fsa_dev = NULL;
1430 quirks = aac_get_driver_ident(index)->quirks;
1431 if (quirks & AAC_QUIRK_31BIT) {
1432 if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(31)))) ||
1433 ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(31)))))
1436 if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32)))) ||
1437 ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(32)))))
1440 if ((retval = (*(aac_get_driver_ident(index)->init))(aac)))
1442 if (quirks & AAC_QUIRK_31BIT)
1443 if ((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32))))
1446 aac->thread = kthread_run(aac_command_thread, aac, "%s",
1448 if (IS_ERR(aac->thread)) {
1449 retval = PTR_ERR(aac->thread);
1454 (void)aac_get_adapter_info(aac);
1455 if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) {
1456 host->sg_tablesize = 34;
1457 host->max_sectors = (host->sg_tablesize * 8) + 112;
1459 if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
1460 host->sg_tablesize = 17;
1461 host->max_sectors = (host->sg_tablesize * 8) + 112;
1463 aac_get_config_status(aac, 1);
1464 aac_get_containers(aac);
1466 * This is where the assumption that the Adapter is quiesced
1469 command_list = NULL;
1470 __shost_for_each_device(dev, host) {
1471 unsigned long flags;
1472 spin_lock_irqsave(&dev->list_lock, flags);
1473 list_for_each_entry(command, &dev->cmd_list, list)
1474 if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
1475 command->SCp.buffer = (struct scatterlist *)command_list;
1476 command_list = command;
1478 spin_unlock_irqrestore(&dev->list_lock, flags);
1480 while ((command = command_list)) {
1481 command_list = (struct scsi_cmnd *)command->SCp.buffer;
1482 command->SCp.buffer = NULL;
1483 command->result = DID_OK << 16
1484 | COMMAND_COMPLETE << 8
1485 | SAM_STAT_TASK_SET_FULL;
1486 command->SCp.phase = AAC_OWNER_ERROR_HANDLER;
1487 command->scsi_done(command);
1493 scsi_unblock_requests(host);
1495 spin_lock_irq(host->host_lock);
1500 int aac_reset_adapter(struct aac_dev * aac, int forced)
1502 unsigned long flagv = 0;
1504 struct Scsi_Host * host;
1506 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1509 if (aac->in_reset) {
1510 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1514 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1517 * Wait for all commands to complete to this specific
1518 * target (block maximum 60 seconds). Although not necessary,
1519 * it does make us a good storage citizen.
1521 host = aac->scsi_host_ptr;
1522 scsi_block_requests(host);
1523 if (forced < 2) for (retval = 60; retval; --retval) {
1524 struct scsi_device * dev;
1525 struct scsi_cmnd * command;
1528 __shost_for_each_device(dev, host) {
1529 spin_lock_irqsave(&dev->list_lock, flagv);
1530 list_for_each_entry(command, &dev->cmd_list, list) {
1531 if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
1536 spin_unlock_irqrestore(&dev->list_lock, flagv);
1542 * We can exit If all the commands are complete
1549 /* Quiesce build, flush cache, write through mode */
1551 aac_send_shutdown(aac);
1552 spin_lock_irqsave(host->host_lock, flagv);
1553 retval = _aac_reset_adapter(aac, forced ? forced : ((aac_check_reset != 0) && (aac_check_reset != 1)));
1554 spin_unlock_irqrestore(host->host_lock, flagv);
1556 if ((forced < 2) && (retval == -ENODEV)) {
1557 /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */
1558 struct fib * fibctx = aac_fib_alloc(aac);
1560 struct aac_pause *cmd;
1563 aac_fib_init(fibctx);
1565 cmd = (struct aac_pause *) fib_data(fibctx);
1567 cmd->command = cpu_to_le32(VM_ContainerConfig);
1568 cmd->type = cpu_to_le32(CT_PAUSE_IO);
1569 cmd->timeout = cpu_to_le32(1);
1570 cmd->min = cpu_to_le32(1);
1571 cmd->noRescan = cpu_to_le32(1);
1572 cmd->count = cpu_to_le32(0);
1574 status = aac_fib_send(ContainerCommand,
1576 sizeof(struct aac_pause),
1578 -2 /* Timeout silently */, 1,
1582 aac_fib_complete(fibctx);
1583 /* FIB should be freed only after getting
1584 * the response from the F/W */
1585 if (status != -ERESTARTSYS)
1586 aac_fib_free(fibctx);
1593 int aac_check_health(struct aac_dev * aac)
1596 unsigned long time_now, flagv = 0;
1597 struct list_head * entry;
1598 struct Scsi_Host * host;
1600 /* Extending the scope of fib_lock slightly to protect aac->in_reset */
1601 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1604 if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) {
1605 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1612 * aac_aifcmd.command = AifCmdEventNotify = 1
1613 * aac_aifcmd.seqnum = 0xFFFFFFFF
1614 * aac_aifcmd.data[0] = AifEnExpEvent = 23
1615 * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3
1616 * aac.aifcmd.data[2] = AifHighPriority = 3
1617 * aac.aifcmd.data[3] = BlinkLED
1620 time_now = jiffies/HZ;
1621 entry = aac->fib_list.next;
1624 * For each Context that is on the
1625 * fibctxList, make a copy of the
1626 * fib, and then set the event to wake up the
1627 * thread that is waiting for it.
1629 while (entry != &aac->fib_list) {
1631 * Extract the fibctx
1633 struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next);
1634 struct hw_fib * hw_fib;
1637 * Check if the queue is getting
1640 if (fibctx->count > 20) {
1642 * It's *not* jiffies folks,
1643 * but jiffies / HZ, so do not
1646 u32 time_last = fibctx->jiffies;
1648 * Has it been > 2 minutes
1649 * since the last read off
1652 if ((time_now - time_last) > aif_timeout) {
1653 entry = entry->next;
1654 aac_close_fib_context(aac, fibctx);
1659 * Warning: no sleep allowed while
1662 hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC);
1663 fib = kzalloc(sizeof(struct fib), GFP_ATOMIC);
1664 if (fib && hw_fib) {
1665 struct aac_aifcmd * aif;
1667 fib->hw_fib_va = hw_fib;
1670 fib->type = FSAFS_NTC_FIB_CONTEXT;
1671 fib->size = sizeof (struct fib);
1672 fib->data = hw_fib->data;
1673 aif = (struct aac_aifcmd *)hw_fib->data;
1674 aif->command = cpu_to_le32(AifCmdEventNotify);
1675 aif->seqnum = cpu_to_le32(0xFFFFFFFF);
1676 ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent);
1677 ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic);
1678 ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority);
1679 ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED);
1682 * Put the FIB onto the
1685 list_add_tail(&fib->fiblink, &fibctx->fib_list);
1688 * Set the event to wake up the
1689 * thread that will waiting.
1691 up(&fibctx->wait_sem);
1693 printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
1697 entry = entry->next;
1700 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1703 printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED);
1707 printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
1709 if (!aac_check_reset || ((aac_check_reset == 1) &&
1710 (aac->supplement_adapter_info.SupportedOptions2 &
1711 AAC_OPTION_IGNORE_RESET)))
1713 host = aac->scsi_host_ptr;
1714 if (aac->thread->pid != current->pid)
1715 spin_lock_irqsave(host->host_lock, flagv);
1716 BlinkLED = _aac_reset_adapter(aac, aac_check_reset != 1);
1717 if (aac->thread->pid != current->pid)
1718 spin_unlock_irqrestore(host->host_lock, flagv);
1728 * aac_command_thread - command processing thread
1729 * @dev: Adapter to monitor
1731 * Waits on the commandready event in it's queue. When the event gets set
1732 * it will pull FIBs off it's queue. It will continue to pull FIBs off
1733 * until the queue is empty. When the queue is empty it will wait for
1737 int aac_command_thread(void *data)
1739 struct aac_dev *dev = data;
1740 struct hw_fib *hw_fib, *hw_newfib;
1741 struct fib *fib, *newfib;
1742 struct aac_fib_context *fibctx;
1743 unsigned long flags;
1744 DECLARE_WAITQUEUE(wait, current);
1745 unsigned long next_jiffies = jiffies + HZ;
1746 unsigned long next_check_jiffies = next_jiffies;
1747 long difference = HZ;
1750 * We can only have one thread per adapter for AIF's.
1752 if (dev->aif_thread)
1756 * Let the DPC know it has a place to send the AIF's to.
1758 dev->aif_thread = 1;
1759 add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
1760 set_current_state(TASK_INTERRUPTIBLE);
1761 dprintk ((KERN_INFO "aac_command_thread start\n"));
1763 spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
1764 while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) {
1765 struct list_head *entry;
1766 struct aac_aifcmd * aifcmd;
1768 set_current_state(TASK_RUNNING);
1770 entry = dev->queues->queue[HostNormCmdQueue].cmdq.next;
1773 spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
1774 fib = list_entry(entry, struct fib, fiblink);
1776 * We will process the FIB here or pass it to a
1777 * worker thread that is TBD. We Really can't
1778 * do anything at this point since we don't have
1779 * anything defined for this thread to do.
1781 hw_fib = fib->hw_fib_va;
1782 memset(fib, 0, sizeof(struct fib));
1783 fib->type = FSAFS_NTC_FIB_CONTEXT;
1784 fib->size = sizeof(struct fib);
1785 fib->hw_fib_va = hw_fib;
1786 fib->data = hw_fib->data;
1789 * We only handle AifRequest fibs from the adapter.
1791 aifcmd = (struct aac_aifcmd *) hw_fib->data;
1792 if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) {
1793 /* Handle Driver Notify Events */
1794 aac_handle_aif(dev, fib);
1795 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
1796 aac_fib_adapter_complete(fib, (u16)sizeof(u32));
1798 /* The u32 here is important and intended. We are using
1799 32bit wrapping time to fit the adapter field */
1801 u32 time_now, time_last;
1802 unsigned long flagv;
1804 struct hw_fib ** hw_fib_pool, ** hw_fib_p;
1805 struct fib ** fib_pool, ** fib_p;
1808 if ((aifcmd->command ==
1809 cpu_to_le32(AifCmdEventNotify)) ||
1811 cpu_to_le32(AifCmdJobProgress))) {
1812 aac_handle_aif(dev, fib);
1815 time_now = jiffies/HZ;
1818 * Warning: no sleep allowed while
1819 * holding spinlock. We take the estimate
1820 * and pre-allocate a set of fibs outside the
1823 num = le32_to_cpu(dev->init->AdapterFibsSize)
1824 / sizeof(struct hw_fib); /* some extra */
1825 spin_lock_irqsave(&dev->fib_lock, flagv);
1826 entry = dev->fib_list.next;
1827 while (entry != &dev->fib_list) {
1828 entry = entry->next;
1831 spin_unlock_irqrestore(&dev->fib_lock, flagv);
1835 && ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL)))
1836 && ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) {
1837 hw_fib_p = hw_fib_pool;
1839 while (hw_fib_p < &hw_fib_pool[num]) {
1840 if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) {
1844 if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) {
1845 kfree(*(--hw_fib_p));
1849 if ((num = hw_fib_p - hw_fib_pool) == 0) {
1859 spin_lock_irqsave(&dev->fib_lock, flagv);
1860 entry = dev->fib_list.next;
1862 * For each Context that is on the
1863 * fibctxList, make a copy of the
1864 * fib, and then set the event to wake up the
1865 * thread that is waiting for it.
1867 hw_fib_p = hw_fib_pool;
1869 while (entry != &dev->fib_list) {
1871 * Extract the fibctx
1873 fibctx = list_entry(entry, struct aac_fib_context, next);
1875 * Check if the queue is getting
1878 if (fibctx->count > 20)
1881 * It's *not* jiffies folks,
1882 * but jiffies / HZ so do not
1885 time_last = fibctx->jiffies;
1887 * Has it been > 2 minutes
1888 * since the last read off
1891 if ((time_now - time_last) > aif_timeout) {
1892 entry = entry->next;
1893 aac_close_fib_context(dev, fibctx);
1898 * Warning: no sleep allowed while
1901 if (hw_fib_p < &hw_fib_pool[num]) {
1902 hw_newfib = *hw_fib_p;
1903 *(hw_fib_p++) = NULL;
1907 * Make the copy of the FIB
1909 memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib));
1910 memcpy(newfib, fib, sizeof(struct fib));
1911 newfib->hw_fib_va = hw_newfib;
1913 * Put the FIB onto the
1916 list_add_tail(&newfib->fiblink, &fibctx->fib_list);
1919 * Set the event to wake up the
1920 * thread that is waiting.
1922 up(&fibctx->wait_sem);
1924 printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
1926 entry = entry->next;
1929 * Set the status of this FIB
1931 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
1932 aac_fib_adapter_complete(fib, sizeof(u32));
1933 spin_unlock_irqrestore(&dev->fib_lock, flagv);
1934 /* Free up the remaining resources */
1935 hw_fib_p = hw_fib_pool;
1937 while (hw_fib_p < &hw_fib_pool[num]) {
1947 spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
1950 * There are no more AIF's
1952 spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
1955 * Background activity
1957 if ((time_before(next_check_jiffies,next_jiffies))
1958 && ((difference = next_check_jiffies - jiffies) <= 0)) {
1959 next_check_jiffies = next_jiffies;
1960 if (aac_check_health(dev) == 0) {
1961 difference = ((long)(unsigned)check_interval)
1963 next_check_jiffies = jiffies + difference;
1964 } else if (!dev->queues)
1967 if (!time_before(next_check_jiffies,next_jiffies)
1968 && ((difference = next_jiffies - jiffies) <= 0)) {
1972 /* Don't even try to talk to adapter if its sick */
1973 ret = aac_check_health(dev);
1974 if (!ret && !dev->queues)
1976 next_check_jiffies = jiffies
1977 + ((long)(unsigned)check_interval)
1979 do_gettimeofday(&now);
1981 /* Synchronize our watches */
1982 if (((1000000 - (1000000 / HZ)) > now.tv_usec)
1983 && (now.tv_usec > (1000000 / HZ)))
1984 difference = (((1000000 - now.tv_usec) * HZ)
1985 + 500000) / 1000000;
1986 else if (ret == 0) {
1989 if ((fibptr = aac_fib_alloc(dev))) {
1993 aac_fib_init(fibptr);
1995 info = (__le32 *) fib_data(fibptr);
1996 if (now.tv_usec > 500000)
1999 *info = cpu_to_le32(now.tv_sec);
2001 status = aac_fib_send(SendHostTime,
2008 /* Do not set XferState to zero unless
2009 * receives a response from F/W */
2011 aac_fib_complete(fibptr);
2012 /* FIB should be freed only after
2013 * getting the response from the F/W */
2014 if (status != -ERESTARTSYS)
2015 aac_fib_free(fibptr);
2017 difference = (long)(unsigned)update_interval*HZ;
2020 difference = 10 * HZ;
2022 next_jiffies = jiffies + difference;
2023 if (time_before(next_check_jiffies,next_jiffies))
2024 difference = next_check_jiffies - jiffies;
2026 if (difference <= 0)
2028 set_current_state(TASK_INTERRUPTIBLE);
2030 if (kthread_should_stop())
2033 schedule_timeout(difference);
2035 if (kthread_should_stop())
2039 remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
2040 dev->aif_thread = 0;
2044 int aac_acquire_irq(struct aac_dev *dev)
2051 cpu = cpumask_first(cpu_online_mask);
2052 if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) {
2053 for (i = 0; i < dev->max_msix; i++) {
2054 dev->aac_msix[i].vector_no = i;
2055 dev->aac_msix[i].dev = dev;
2056 if (request_irq(dev->msixentry[i].vector,
2057 dev->a_ops.adapter_intr,
2058 0, "aacraid", &(dev->aac_msix[i]))) {
2059 printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n",
2060 dev->name, dev->id, i);
2061 for (j = 0 ; j < i ; j++)
2062 free_irq(dev->msixentry[j].vector,
2063 &(dev->aac_msix[j]));
2064 pci_disable_msix(dev->pdev);
2067 if (irq_set_affinity_hint(dev->msixentry[i].vector,
2068 get_cpu_mask(cpu))) {
2069 printk(KERN_ERR "%s%d: Failed to set IRQ affinity for cpu %d\n",
2070 dev->name, dev->id, cpu);
2072 cpu = cpumask_next(cpu, cpu_online_mask);
2075 dev->aac_msix[0].vector_no = 0;
2076 dev->aac_msix[0].dev = dev;
2078 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
2079 IRQF_SHARED, "aacraid",
2080 &(dev->aac_msix[0])) < 0) {
2082 pci_disable_msi(dev->pdev);
2083 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
2084 dev->name, dev->id);
2091 void aac_free_irq(struct aac_dev *dev)
2096 cpu = cpumask_first(cpu_online_mask);
2097 if (dev->pdev->device == PMC_DEVICE_S6 ||
2098 dev->pdev->device == PMC_DEVICE_S7 ||
2099 dev->pdev->device == PMC_DEVICE_S8 ||
2100 dev->pdev->device == PMC_DEVICE_S9) {
2101 if (dev->max_msix > 1) {
2102 for (i = 0; i < dev->max_msix; i++) {
2103 if (irq_set_affinity_hint(
2104 dev->msixentry[i].vector, NULL)) {
2105 printk(KERN_ERR "%s%d: Failed to reset IRQ affinity for cpu %d\n",
2106 dev->name, dev->id, cpu);
2108 cpu = cpumask_next(cpu, cpu_online_mask);
2109 free_irq(dev->msixentry[i].vector,
2110 &(dev->aac_msix[i]));
2113 free_irq(dev->pdev->irq, &(dev->aac_msix[0]));
2116 free_irq(dev->pdev->irq, dev);
2119 pci_disable_msi(dev->pdev);
2120 else if (dev->max_msix > 1)
2121 pci_disable_msix(dev->pdev);