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 * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
10 * 2016-2017 Microsemi Corp. (aacraid@microsemi.com)
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2, or (at your option)
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; see the file COPYING. If not, write to
24 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
29 * Abstract: Contain all routines that are required for FSA host/adapter
34 #include <linux/kernel.h>
35 #include <linux/init.h>
36 #include <linux/crash_dump.h>
37 #include <linux/types.h>
38 #include <linux/sched.h>
39 #include <linux/pci.h>
40 #include <linux/spinlock.h>
41 #include <linux/slab.h>
42 #include <linux/completion.h>
43 #include <linux/blkdev.h>
44 #include <linux/delay.h>
45 #include <linux/kthread.h>
46 #include <linux/interrupt.h>
47 #include <linux/bcd.h>
48 #include <scsi/scsi.h>
49 #include <scsi/scsi_host.h>
50 #include <scsi/scsi_device.h>
51 #include <scsi/scsi_cmnd.h>
56 * fib_map_alloc - allocate the fib objects
57 * @dev: Adapter to allocate for
59 * Allocate and map the shared PCI space for the FIB blocks used to
60 * talk to the Adaptec firmware.
63 static int fib_map_alloc(struct aac_dev *dev)
65 if (dev->max_fib_size > AAC_MAX_NATIVE_SIZE)
66 dev->max_cmd_size = AAC_MAX_NATIVE_SIZE;
68 dev->max_cmd_size = dev->max_fib_size;
69 if (dev->max_fib_size < AAC_MAX_NATIVE_SIZE) {
70 dev->max_cmd_size = AAC_MAX_NATIVE_SIZE;
72 dev->max_cmd_size = dev->max_fib_size;
76 "allocate hardware fibs dma_alloc_coherent(%p, %d * (%d + %d), %p)\n",
77 &dev->pdev->dev, dev->max_cmd_size, dev->scsi_host_ptr->can_queue,
78 AAC_NUM_MGT_FIB, &dev->hw_fib_pa));
79 dev->hw_fib_va = dma_alloc_coherent(&dev->pdev->dev,
80 (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr))
81 * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1),
82 &dev->hw_fib_pa, GFP_KERNEL);
83 if (dev->hw_fib_va == NULL)
89 * aac_fib_map_free - free the fib objects
90 * @dev: Adapter to free
92 * Free the PCI mappings and the memory allocated for FIB blocks
96 void aac_fib_map_free(struct aac_dev *dev)
102 if(!dev->hw_fib_va || !dev->max_cmd_size)
105 num_fibs = dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB;
106 fib_size = dev->max_fib_size + sizeof(struct aac_fib_xporthdr);
107 alloc_size = fib_size * num_fibs + ALIGN32 - 1;
109 dma_free_coherent(&dev->pdev->dev, alloc_size, dev->hw_fib_va,
112 dev->hw_fib_va = NULL;
116 void aac_fib_vector_assign(struct aac_dev *dev)
120 struct fib *fibptr = NULL;
122 for (i = 0, fibptr = &dev->fibs[i];
123 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
125 if ((dev->max_msix == 1) ||
126 (i > ((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1)
127 - dev->vector_cap))) {
128 fibptr->vector_no = 0;
130 fibptr->vector_no = vector;
132 if (vector == dev->max_msix)
139 * aac_fib_setup - setup the fibs
140 * @dev: Adapter to set up
142 * Allocate the PCI space for the fibs, map it and then initialise the
143 * fib area, the unmapped fib data and also the free list
146 int aac_fib_setup(struct aac_dev * dev)
149 struct hw_fib *hw_fib;
150 dma_addr_t hw_fib_pa;
154 while (((i = fib_map_alloc(dev)) == -ENOMEM)
155 && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) {
156 max_cmds = (dev->scsi_host_ptr->can_queue+AAC_NUM_MGT_FIB) >> 1;
157 dev->scsi_host_ptr->can_queue = max_cmds - AAC_NUM_MGT_FIB;
158 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)
159 dev->init->r7.max_io_commands = cpu_to_le32(max_cmds);
164 memset(dev->hw_fib_va, 0,
165 (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr)) *
166 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
168 /* 32 byte alignment for PMC */
169 hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1);
170 hw_fib = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
171 (hw_fib_pa - dev->hw_fib_pa));
173 /* add Xport header */
174 hw_fib = (struct hw_fib *)((unsigned char *)hw_fib +
175 sizeof(struct aac_fib_xporthdr));
176 hw_fib_pa += sizeof(struct aac_fib_xporthdr);
179 * Initialise the fibs
181 for (i = 0, fibptr = &dev->fibs[i];
182 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
186 fibptr->size = sizeof(struct fib);
188 fibptr->hw_fib_va = hw_fib;
189 fibptr->data = (void *) fibptr->hw_fib_va->data;
190 fibptr->next = fibptr+1; /* Forward chain the fibs */
191 init_completion(&fibptr->event_wait);
192 spin_lock_init(&fibptr->event_lock);
193 hw_fib->header.XferState = cpu_to_le32(0xffffffff);
194 hw_fib->header.SenderSize =
195 cpu_to_le16(dev->max_fib_size); /* ?? max_cmd_size */
196 fibptr->hw_fib_pa = hw_fib_pa;
197 fibptr->hw_sgl_pa = hw_fib_pa +
198 offsetof(struct aac_hba_cmd_req, sge[2]);
200 * one element is for the ptr to the separate sg list,
201 * second element for 32 byte alignment
203 fibptr->hw_error_pa = hw_fib_pa +
204 offsetof(struct aac_native_hba, resp.resp_bytes[0]);
206 hw_fib = (struct hw_fib *)((unsigned char *)hw_fib +
207 dev->max_cmd_size + sizeof(struct aac_fib_xporthdr));
208 hw_fib_pa = hw_fib_pa +
209 dev->max_cmd_size + sizeof(struct aac_fib_xporthdr);
213 *Assign vector numbers to fibs
215 aac_fib_vector_assign(dev);
218 * Add the fib chain to the free list
220 dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL;
222 * Set 8 fibs aside for management tools
224 dev->free_fib = &dev->fibs[dev->scsi_host_ptr->can_queue];
229 * aac_fib_alloc_tag-allocate a fib using tags
230 * @dev: Adapter to allocate the fib for
232 * Allocate a fib from the adapter fib pool using tags
233 * from the blk layer.
236 struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd)
240 fibptr = &dev->fibs[scmd->request->tag];
242 * Null out fields that depend on being zero at the start of
245 fibptr->hw_fib_va->header.XferState = 0;
246 fibptr->type = FSAFS_NTC_FIB_CONTEXT;
247 fibptr->callback_data = NULL;
248 fibptr->callback = NULL;
254 * aac_fib_alloc - allocate a fib
255 * @dev: Adapter to allocate the fib for
257 * Allocate a fib from the adapter fib pool. If the pool is empty we
261 struct fib *aac_fib_alloc(struct aac_dev *dev)
265 spin_lock_irqsave(&dev->fib_lock, flags);
266 fibptr = dev->free_fib;
268 spin_unlock_irqrestore(&dev->fib_lock, flags);
271 dev->free_fib = fibptr->next;
272 spin_unlock_irqrestore(&dev->fib_lock, flags);
274 * Set the proper node type code and node byte size
276 fibptr->type = FSAFS_NTC_FIB_CONTEXT;
277 fibptr->size = sizeof(struct fib);
279 * Null out fields that depend on being zero at the start of
282 fibptr->hw_fib_va->header.XferState = 0;
284 fibptr->callback = NULL;
285 fibptr->callback_data = NULL;
291 * aac_fib_free - free a fib
292 * @fibptr: fib to free up
294 * Frees up a fib and places it on the appropriate queue
297 void aac_fib_free(struct fib *fibptr)
301 if (fibptr->done == 2)
304 spin_lock_irqsave(&fibptr->dev->fib_lock, flags);
305 if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
306 aac_config.fib_timeouts++;
307 if (!(fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) &&
308 fibptr->hw_fib_va->header.XferState != 0) {
309 printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
311 le32_to_cpu(fibptr->hw_fib_va->header.XferState));
313 fibptr->next = fibptr->dev->free_fib;
314 fibptr->dev->free_fib = fibptr;
315 spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags);
319 * aac_fib_init - initialise a fib
320 * @fibptr: The fib to initialize
322 * Set up the generic fib fields ready for use
325 void aac_fib_init(struct fib *fibptr)
327 struct hw_fib *hw_fib = fibptr->hw_fib_va;
329 memset(&hw_fib->header, 0, sizeof(struct aac_fibhdr));
330 hw_fib->header.StructType = FIB_MAGIC;
331 hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size);
332 hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable);
333 hw_fib->header.u.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa);
334 hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size);
338 * fib_deallocate - deallocate a fib
339 * @fibptr: fib to deallocate
341 * Will deallocate and return to the free pool the FIB pointed to by the
345 static void fib_dealloc(struct fib * fibptr)
347 struct hw_fib *hw_fib = fibptr->hw_fib_va;
348 hw_fib->header.XferState = 0;
352 * Commuication primitives define and support the queuing method we use to
353 * support host to adapter commuication. All queue accesses happen through
354 * these routines and are the only routines which have a knowledge of the
355 * how these queues are implemented.
359 * aac_get_entry - get a queue entry
362 * @entry: Entry return
363 * @index: Index return
364 * @nonotify: notification control
366 * With a priority the routine returns a queue entry if the queue has free entries. If the queue
367 * is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
371 static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify)
373 struct aac_queue * q;
377 * All of the queues wrap when they reach the end, so we check
378 * to see if they have reached the end and if they have we just
379 * set the index back to zero. This is a wrap. You could or off
380 * the high bits in all updates but this is a bit faster I think.
383 q = &dev->queues->queue[qid];
385 idx = *index = le32_to_cpu(*(q->headers.producer));
386 /* Interrupt Moderation, only interrupt for first two entries */
387 if (idx != le32_to_cpu(*(q->headers.consumer))) {
389 if (qid == AdapNormCmdQueue)
390 idx = ADAP_NORM_CMD_ENTRIES;
392 idx = ADAP_NORM_RESP_ENTRIES;
394 if (idx != le32_to_cpu(*(q->headers.consumer)))
398 if (qid == AdapNormCmdQueue) {
399 if (*index >= ADAP_NORM_CMD_ENTRIES)
400 *index = 0; /* Wrap to front of the Producer Queue. */
402 if (*index >= ADAP_NORM_RESP_ENTRIES)
403 *index = 0; /* Wrap to front of the Producer Queue. */
407 if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) {
408 printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
409 qid, atomic_read(&q->numpending));
412 *entry = q->base + *index;
418 * aac_queue_get - get the next free QE
420 * @index: Returned index
421 * @priority: Priority of fib
422 * @fib: Fib to associate with the queue entry
423 * @wait: Wait if queue full
424 * @fibptr: Driver fib object to go with fib
425 * @nonotify: Don't notify the adapter
427 * Gets the next free QE off the requested priorty adapter command
428 * queue and associates the Fib with the QE. The QE represented by
429 * index is ready to insert on the queue when this routine returns
433 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)
435 struct aac_entry * entry = NULL;
438 if (qid == AdapNormCmdQueue) {
439 /* if no entries wait for some if caller wants to */
440 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
441 printk(KERN_ERR "GetEntries failed\n");
444 * Setup queue entry with a command, status and fib mapped
446 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
449 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
450 /* if no entries wait for some if caller wants to */
453 * Setup queue entry with command, status and fib mapped
455 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
456 entry->addr = hw_fib->header.SenderFibAddress;
457 /* Restore adapters pointer to the FIB */
458 hw_fib->header.u.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */
462 * If MapFib is true than we need to map the Fib and put pointers
463 * in the queue entry.
466 entry->addr = cpu_to_le32(fibptr->hw_fib_pa);
471 * Define the highest level of host to adapter communication routines.
472 * These routines will support host to adapter FS commuication. These
473 * routines have no knowledge of the commuication method used. This level
474 * sends and receives FIBs. This level has no knowledge of how these FIBs
475 * get passed back and forth.
479 * aac_fib_send - send a fib to the adapter
480 * @command: Command to send
482 * @size: Size of fib data area
483 * @priority: Priority of Fib
484 * @wait: Async/sync select
485 * @reply: True if a reply is wanted
486 * @callback: Called with reply
487 * @callback_data: Passed to callback
489 * Sends the requested FIB to the adapter and optionally will wait for a
490 * response FIB. If the caller does not wish to wait for a response than
491 * an event to wait on must be supplied. This event will be set when a
492 * response FIB is received from the adapter.
495 int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
496 int priority, int wait, int reply, fib_callback callback,
499 struct aac_dev * dev = fibptr->dev;
500 struct hw_fib * hw_fib = fibptr->hw_fib_va;
501 unsigned long flags = 0;
502 unsigned long mflags = 0;
503 unsigned long sflags = 0;
505 if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
508 if (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))
512 * There are 5 cases with the wait and response requested flags.
513 * The only invalid cases are if the caller requests to wait and
514 * does not request a response and if the caller does not want a
515 * response and the Fib is not allocated from pool. If a response
516 * is not requested the Fib will just be deallocaed by the DPC
517 * routine when the response comes back from the adapter. No
518 * further processing will be done besides deleting the Fib. We
519 * will have a debug mode where the adapter can notify the host
520 * it had a problem and the host can log that fact.
523 if (wait && !reply) {
525 } else if (!wait && reply) {
526 hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected);
527 FIB_COUNTER_INCREMENT(aac_config.AsyncSent);
528 } else if (!wait && !reply) {
529 hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected);
530 FIB_COUNTER_INCREMENT(aac_config.NoResponseSent);
531 } else if (wait && reply) {
532 hw_fib->header.XferState |= cpu_to_le32(ResponseExpected);
533 FIB_COUNTER_INCREMENT(aac_config.NormalSent);
536 * Map the fib into 32bits by using the fib number
539 hw_fib->header.SenderFibAddress =
540 cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2);
542 /* use the same shifted value for handle to be compatible
543 * with the new native hba command handle
545 hw_fib->header.Handle =
546 cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1);
549 * Set FIB state to indicate where it came from and if we want a
550 * response from the adapter. Also load the command from the
553 * Map the hw fib pointer as a 32bit value
555 hw_fib->header.Command = cpu_to_le16(command);
556 hw_fib->header.XferState |= cpu_to_le32(SentFromHost);
558 * Set the size of the Fib we want to send to the adapter
560 hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size);
561 if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) {
565 * Get a queue entry connect the FIB to it and send an notify
566 * the adapter a command is ready.
568 hw_fib->header.XferState |= cpu_to_le32(NormalPriority);
571 * Fill in the Callback and CallbackContext if we are not
575 fibptr->callback = callback;
576 fibptr->callback_data = callback_data;
577 fibptr->flags = FIB_CONTEXT_FLAG;
582 FIB_COUNTER_INCREMENT(aac_config.FibsSent);
584 dprintk((KERN_DEBUG "Fib contents:.\n"));
585 dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command)));
586 dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command)));
587 dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState)));
588 dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va));
589 dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
590 dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr));
597 spin_lock_irqsave(&dev->manage_lock, mflags);
598 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) {
599 printk(KERN_INFO "No management Fibs Available:%d\n",
600 dev->management_fib_count);
601 spin_unlock_irqrestore(&dev->manage_lock, mflags);
604 dev->management_fib_count++;
605 spin_unlock_irqrestore(&dev->manage_lock, mflags);
606 spin_lock_irqsave(&fibptr->event_lock, flags);
609 if (dev->sync_mode) {
611 spin_unlock_irqrestore(&fibptr->event_lock, flags);
612 spin_lock_irqsave(&dev->sync_lock, sflags);
614 list_add_tail(&fibptr->fiblink, &dev->sync_fib_list);
615 spin_unlock_irqrestore(&dev->sync_lock, sflags);
617 dev->sync_fib = fibptr;
618 spin_unlock_irqrestore(&dev->sync_lock, sflags);
619 aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB,
620 (u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0,
621 NULL, NULL, NULL, NULL, NULL);
624 fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
625 if (wait_for_completion_interruptible(&fibptr->event_wait)) {
626 fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT;
634 if (aac_adapter_deliver(fibptr) != 0) {
635 printk(KERN_ERR "aac_fib_send: returned -EBUSY\n");
637 spin_unlock_irqrestore(&fibptr->event_lock, flags);
638 spin_lock_irqsave(&dev->manage_lock, mflags);
639 dev->management_fib_count--;
640 spin_unlock_irqrestore(&dev->manage_lock, mflags);
647 * If the caller wanted us to wait for response wait now.
651 spin_unlock_irqrestore(&fibptr->event_lock, flags);
652 /* Only set for first known interruptable command */
655 * *VERY* Dangerous to time out a command, the
656 * assumption is made that we have no hope of
657 * functioning because an interrupt routing or other
658 * hardware failure has occurred.
660 unsigned long timeout = jiffies + (180 * HZ); /* 3 minutes */
661 while (!try_wait_for_completion(&fibptr->event_wait)) {
663 if (time_is_before_eq_jiffies(timeout)) {
664 struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue];
665 atomic_dec(&q->numpending);
667 printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n"
668 "Usually a result of a PCI interrupt routing problem;\n"
669 "update mother board BIOS or consider utilizing one of\n"
670 "the SAFE mode kernel options (acpi, apic etc)\n");
675 if (unlikely(pci_channel_offline(dev->pdev)))
678 if ((blink = aac_adapter_check_health(dev)) > 0) {
680 printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n"
681 "Usually a result of a serious unrecoverable hardware problem\n",
687 * Allow other processes / CPUS to use core
691 } else if (wait_for_completion_interruptible(&fibptr->event_wait)) {
692 /* Do nothing ... satisfy
693 * wait_for_completion_interruptible must_check */
696 spin_lock_irqsave(&fibptr->event_lock, flags);
697 if (fibptr->done == 0) {
698 fibptr->done = 2; /* Tell interrupt we aborted */
699 spin_unlock_irqrestore(&fibptr->event_lock, flags);
702 spin_unlock_irqrestore(&fibptr->event_lock, flags);
703 BUG_ON(fibptr->done == 0);
705 if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
710 * If the user does not want a response than return success otherwise
719 int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback,
722 struct aac_dev *dev = fibptr->dev;
724 unsigned long flags = 0;
725 unsigned long mflags = 0;
726 struct aac_hba_cmd_req *hbacmd = (struct aac_hba_cmd_req *)
729 fibptr->flags = (FIB_CONTEXT_FLAG | FIB_CONTEXT_FLAG_NATIVE_HBA);
732 fibptr->callback = callback;
733 fibptr->callback_data = callback_data;
738 hbacmd->iu_type = command;
740 if (command == HBA_IU_TYPE_SCSI_CMD_REQ) {
741 /* bit1 of request_id must be 0 */
743 cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1);
744 fibptr->flags |= FIB_CONTEXT_FLAG_SCSI_CMD;
745 } else if (command != HBA_IU_TYPE_SCSI_TM_REQ)
750 spin_lock_irqsave(&dev->manage_lock, mflags);
751 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) {
752 spin_unlock_irqrestore(&dev->manage_lock, mflags);
755 dev->management_fib_count++;
756 spin_unlock_irqrestore(&dev->manage_lock, mflags);
757 spin_lock_irqsave(&fibptr->event_lock, flags);
760 if (aac_adapter_deliver(fibptr) != 0) {
762 spin_unlock_irqrestore(&fibptr->event_lock, flags);
763 spin_lock_irqsave(&dev->manage_lock, mflags);
764 dev->management_fib_count--;
765 spin_unlock_irqrestore(&dev->manage_lock, mflags);
769 FIB_COUNTER_INCREMENT(aac_config.NativeSent);
773 spin_unlock_irqrestore(&fibptr->event_lock, flags);
775 if (unlikely(pci_channel_offline(dev->pdev)))
778 fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
779 if (wait_for_completion_interruptible(&fibptr->event_wait))
781 fibptr->flags &= ~(FIB_CONTEXT_FLAG_WAIT);
783 spin_lock_irqsave(&fibptr->event_lock, flags);
784 if ((fibptr->done == 0) || (fibptr->done == 2)) {
785 fibptr->done = 2; /* Tell interrupt we aborted */
786 spin_unlock_irqrestore(&fibptr->event_lock, flags);
789 spin_unlock_irqrestore(&fibptr->event_lock, flags);
790 WARN_ON(fibptr->done == 0);
792 if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
802 * aac_consumer_get - get the top of the queue
805 * @entry: Return entry
807 * Will return a pointer to the entry on the top of the queue requested that
808 * we are a consumer of, and return the address of the queue entry. It does
809 * not change the state of the queue.
812 int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry)
816 if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) {
820 * The consumer index must be wrapped if we have reached
821 * the end of the queue, else we just use the entry
822 * pointed to by the header index
824 if (le32_to_cpu(*q->headers.consumer) >= q->entries)
827 index = le32_to_cpu(*q->headers.consumer);
828 *entry = q->base + index;
835 * aac_consumer_free - free consumer entry
840 * Frees up the current top of the queue we are a consumer of. If the
841 * queue was full notify the producer that the queue is no longer full.
844 void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid)
849 if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer))
852 if (le32_to_cpu(*q->headers.consumer) >= q->entries)
853 *q->headers.consumer = cpu_to_le32(1);
855 le32_add_cpu(q->headers.consumer, 1);
860 case HostNormCmdQueue:
861 notify = HostNormCmdNotFull;
863 case HostNormRespQueue:
864 notify = HostNormRespNotFull;
870 aac_adapter_notify(dev, notify);
875 * aac_fib_adapter_complete - complete adapter issued fib
876 * @fibptr: fib to complete
879 * Will do all necessary work to complete a FIB that was sent from
883 int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
885 struct hw_fib * hw_fib = fibptr->hw_fib_va;
886 struct aac_dev * dev = fibptr->dev;
887 struct aac_queue * q;
888 unsigned long nointr = 0;
889 unsigned long qflags;
891 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
892 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2 ||
893 dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) {
898 if (hw_fib->header.XferState == 0) {
899 if (dev->comm_interface == AAC_COMM_MESSAGE)
904 * If we plan to do anything check the structure type first.
906 if (hw_fib->header.StructType != FIB_MAGIC &&
907 hw_fib->header.StructType != FIB_MAGIC2 &&
908 hw_fib->header.StructType != FIB_MAGIC2_64) {
909 if (dev->comm_interface == AAC_COMM_MESSAGE)
914 * This block handles the case where the adapter had sent us a
915 * command and we have finished processing the command. We
916 * call completeFib when we are done processing the command
917 * and want to send a response back to the adapter. This will
918 * send the completed cdb to the adapter.
920 if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) {
921 if (dev->comm_interface == AAC_COMM_MESSAGE) {
925 hw_fib->header.XferState |= cpu_to_le32(HostProcessed);
927 size += sizeof(struct aac_fibhdr);
928 if (size > le16_to_cpu(hw_fib->header.SenderSize))
930 hw_fib->header.Size = cpu_to_le16(size);
932 q = &dev->queues->queue[AdapNormRespQueue];
933 spin_lock_irqsave(q->lock, qflags);
934 aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr);
935 *(q->headers.producer) = cpu_to_le32(index + 1);
936 spin_unlock_irqrestore(q->lock, qflags);
937 if (!(nointr & (int)aac_config.irq_mod))
938 aac_adapter_notify(dev, AdapNormRespQueue);
941 printk(KERN_WARNING "aac_fib_adapter_complete: "
942 "Unknown xferstate detected.\n");
949 * aac_fib_complete - fib completion handler
950 * @fib: FIB to complete
952 * Will do all necessary work to complete a FIB.
955 int aac_fib_complete(struct fib *fibptr)
957 struct hw_fib * hw_fib = fibptr->hw_fib_va;
959 if (fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) {
965 * Check for a fib which has already been completed or with a
966 * status wait timeout
969 if (hw_fib->header.XferState == 0 || fibptr->done == 2)
972 * If we plan to do anything check the structure type first.
975 if (hw_fib->header.StructType != FIB_MAGIC &&
976 hw_fib->header.StructType != FIB_MAGIC2 &&
977 hw_fib->header.StructType != FIB_MAGIC2_64)
980 * This block completes a cdb which orginated on the host and we
981 * just need to deallocate the cdb or reinit it. At this point the
982 * command is complete that we had sent to the adapter and this
983 * cdb could be reused.
986 if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) &&
987 (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)))
991 else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost))
994 * This handles the case when the host has aborted the I/O
995 * to the adapter because the adapter is not responding
998 } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) {
1007 * aac_printf - handle printf from firmware
1009 * @val: Message info
1011 * Print a message passed to us by the controller firmware on the
1015 void aac_printf(struct aac_dev *dev, u32 val)
1017 char *cp = dev->printfbuf;
1018 if (dev->printf_enabled)
1020 int length = val & 0xffff;
1021 int level = (val >> 16) & 0xffff;
1024 * The size of the printfbuf is set in port.c
1025 * There is no variable or define for it
1029 if (cp[length] != 0)
1031 if (level == LOG_AAC_HIGH_ERROR)
1032 printk(KERN_WARNING "%s:%s", dev->name, cp);
1034 printk(KERN_INFO "%s:%s", dev->name, cp);
1039 static inline int aac_aif_data(struct aac_aifcmd *aifcmd, uint32_t index)
1041 return le32_to_cpu(((__le32 *)aifcmd->data)[index]);
1045 static void aac_handle_aif_bu(struct aac_dev *dev, struct aac_aifcmd *aifcmd)
1047 switch (aac_aif_data(aifcmd, 1)) {
1048 case AifBuCacheDataLoss:
1049 if (aac_aif_data(aifcmd, 2))
1050 dev_info(&dev->pdev->dev, "Backup unit had cache data loss - [%d]\n",
1051 aac_aif_data(aifcmd, 2));
1053 dev_info(&dev->pdev->dev, "Backup Unit had cache data loss\n");
1055 case AifBuCacheDataRecover:
1056 if (aac_aif_data(aifcmd, 2))
1057 dev_info(&dev->pdev->dev, "DDR cache data recovered successfully - [%d]\n",
1058 aac_aif_data(aifcmd, 2));
1060 dev_info(&dev->pdev->dev, "DDR cache data recovered successfully\n");
1066 * aac_handle_aif - Handle a message from the firmware
1067 * @dev: Which adapter this fib is from
1068 * @fibptr: Pointer to fibptr from adapter
1070 * This routine handles a driver notify fib from the adapter and
1071 * dispatches it to the appropriate routine for handling.
1074 #define AIF_SNIFF_TIMEOUT (500*HZ)
1075 static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
1077 struct hw_fib * hw_fib = fibptr->hw_fib_va;
1078 struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data;
1079 u32 channel, id, lun, container;
1080 struct scsi_device *device;
1086 } device_config_needed = NOTHING;
1088 /* Sniff for container changes */
1090 if (!dev || !dev->fsa_dev)
1092 container = channel = id = lun = (u32)-1;
1095 * We have set this up to try and minimize the number of
1096 * re-configures that take place. As a result of this when
1097 * certain AIF's come in we will set a flag waiting for another
1098 * type of AIF before setting the re-config flag.
1100 switch (le32_to_cpu(aifcmd->command)) {
1101 case AifCmdDriverNotify:
1102 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
1103 case AifRawDeviceRemove:
1104 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1105 if ((container >> 28)) {
1106 container = (u32)-1;
1109 channel = (container >> 24) & 0xF;
1110 if (channel >= dev->maximum_num_channels) {
1111 container = (u32)-1;
1114 id = container & 0xFFFF;
1115 if (id >= dev->maximum_num_physicals) {
1116 container = (u32)-1;
1119 lun = (container >> 16) & 0xFF;
1120 container = (u32)-1;
1121 channel = aac_phys_to_logical(channel);
1122 device_config_needed = DELETE;
1126 * Morph or Expand complete
1128 case AifDenMorphComplete:
1129 case AifDenVolumeExtendComplete:
1130 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1131 if (container >= dev->maximum_num_containers)
1135 * Find the scsi_device associated with the SCSI
1136 * address. Make sure we have the right array, and if
1137 * so set the flag to initiate a new re-config once we
1138 * see an AifEnConfigChange AIF come through.
1141 if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) {
1142 device = scsi_device_lookup(dev->scsi_host_ptr,
1143 CONTAINER_TO_CHANNEL(container),
1144 CONTAINER_TO_ID(container),
1145 CONTAINER_TO_LUN(container));
1147 dev->fsa_dev[container].config_needed = CHANGE;
1148 dev->fsa_dev[container].config_waiting_on = AifEnConfigChange;
1149 dev->fsa_dev[container].config_waiting_stamp = jiffies;
1150 scsi_device_put(device);
1156 * If we are waiting on something and this happens to be
1157 * that thing then set the re-configure flag.
1159 if (container != (u32)-1) {
1160 if (container >= dev->maximum_num_containers)
1162 if ((dev->fsa_dev[container].config_waiting_on ==
1163 le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1164 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1165 dev->fsa_dev[container].config_waiting_on = 0;
1166 } else for (container = 0;
1167 container < dev->maximum_num_containers; ++container) {
1168 if ((dev->fsa_dev[container].config_waiting_on ==
1169 le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1170 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1171 dev->fsa_dev[container].config_waiting_on = 0;
1175 case AifCmdEventNotify:
1176 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
1177 case AifEnBatteryEvent:
1178 dev->cache_protected =
1179 (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3));
1184 case AifEnAddContainer:
1185 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1186 if (container >= dev->maximum_num_containers)
1188 dev->fsa_dev[container].config_needed = ADD;
1189 dev->fsa_dev[container].config_waiting_on =
1191 dev->fsa_dev[container].config_waiting_stamp = jiffies;
1197 case AifEnDeleteContainer:
1198 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1199 if (container >= dev->maximum_num_containers)
1201 dev->fsa_dev[container].config_needed = DELETE;
1202 dev->fsa_dev[container].config_waiting_on =
1204 dev->fsa_dev[container].config_waiting_stamp = jiffies;
1208 * Container change detected. If we currently are not
1209 * waiting on something else, setup to wait on a Config Change.
1211 case AifEnContainerChange:
1212 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1213 if (container >= dev->maximum_num_containers)
1215 if (dev->fsa_dev[container].config_waiting_on &&
1216 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1218 dev->fsa_dev[container].config_needed = CHANGE;
1219 dev->fsa_dev[container].config_waiting_on =
1221 dev->fsa_dev[container].config_waiting_stamp = jiffies;
1224 case AifEnConfigChange:
1228 case AifEnDeleteJBOD:
1229 container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1230 if ((container >> 28)) {
1231 container = (u32)-1;
1234 channel = (container >> 24) & 0xF;
1235 if (channel >= dev->maximum_num_channels) {
1236 container = (u32)-1;
1239 id = container & 0xFFFF;
1240 if (id >= dev->maximum_num_physicals) {
1241 container = (u32)-1;
1244 lun = (container >> 16) & 0xFF;
1245 container = (u32)-1;
1246 channel = aac_phys_to_logical(channel);
1247 device_config_needed =
1248 (((__le32 *)aifcmd->data)[0] ==
1249 cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE;
1250 if (device_config_needed == ADD) {
1251 device = scsi_device_lookup(dev->scsi_host_ptr,
1256 scsi_remove_device(device);
1257 scsi_device_put(device);
1262 case AifEnEnclosureManagement:
1264 * If in JBOD mode, automatic exposure of new
1265 * physical target to be suppressed until configured.
1269 switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) {
1270 case EM_DRIVE_INSERTION:
1271 case EM_DRIVE_REMOVAL:
1272 case EM_SES_DRIVE_INSERTION:
1273 case EM_SES_DRIVE_REMOVAL:
1274 container = le32_to_cpu(
1275 ((__le32 *)aifcmd->data)[2]);
1276 if ((container >> 28)) {
1277 container = (u32)-1;
1280 channel = (container >> 24) & 0xF;
1281 if (channel >= dev->maximum_num_channels) {
1282 container = (u32)-1;
1285 id = container & 0xFFFF;
1286 lun = (container >> 16) & 0xFF;
1287 container = (u32)-1;
1288 if (id >= dev->maximum_num_physicals) {
1289 /* legacy dev_t ? */
1290 if ((0x2000 <= id) || lun || channel ||
1291 ((channel = (id >> 7) & 0x3F) >=
1292 dev->maximum_num_channels))
1294 lun = (id >> 4) & 7;
1297 channel = aac_phys_to_logical(channel);
1298 device_config_needed =
1299 ((((__le32 *)aifcmd->data)[3]
1300 == cpu_to_le32(EM_DRIVE_INSERTION)) ||
1301 (((__le32 *)aifcmd->data)[3]
1302 == cpu_to_le32(EM_SES_DRIVE_INSERTION))) ?
1306 case AifBuManagerEvent:
1307 aac_handle_aif_bu(dev, aifcmd);
1312 * If we are waiting on something and this happens to be
1313 * that thing then set the re-configure flag.
1315 if (container != (u32)-1) {
1316 if (container >= dev->maximum_num_containers)
1318 if ((dev->fsa_dev[container].config_waiting_on ==
1319 le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1320 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1321 dev->fsa_dev[container].config_waiting_on = 0;
1322 } else for (container = 0;
1323 container < dev->maximum_num_containers; ++container) {
1324 if ((dev->fsa_dev[container].config_waiting_on ==
1325 le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1326 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1327 dev->fsa_dev[container].config_waiting_on = 0;
1331 case AifCmdJobProgress:
1333 * These are job progress AIF's. When a Clear is being
1334 * done on a container it is initially created then hidden from
1335 * the OS. When the clear completes we don't get a config
1336 * change so we monitor the job status complete on a clear then
1337 * wait for a container change.
1340 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
1341 (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] ||
1342 ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) {
1344 container < dev->maximum_num_containers;
1347 * Stomp on all config sequencing for all
1350 dev->fsa_dev[container].config_waiting_on =
1351 AifEnContainerChange;
1352 dev->fsa_dev[container].config_needed = ADD;
1353 dev->fsa_dev[container].config_waiting_stamp =
1357 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
1358 ((__le32 *)aifcmd->data)[6] == 0 &&
1359 ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) {
1361 container < dev->maximum_num_containers;
1364 * Stomp on all config sequencing for all
1367 dev->fsa_dev[container].config_waiting_on =
1368 AifEnContainerChange;
1369 dev->fsa_dev[container].config_needed = DELETE;
1370 dev->fsa_dev[container].config_waiting_stamp =
1379 if (device_config_needed == NOTHING)
1380 for (; container < dev->maximum_num_containers; ++container) {
1381 if ((dev->fsa_dev[container].config_waiting_on == 0) &&
1382 (dev->fsa_dev[container].config_needed != NOTHING) &&
1383 time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) {
1384 device_config_needed =
1385 dev->fsa_dev[container].config_needed;
1386 dev->fsa_dev[container].config_needed = NOTHING;
1387 channel = CONTAINER_TO_CHANNEL(container);
1388 id = CONTAINER_TO_ID(container);
1389 lun = CONTAINER_TO_LUN(container);
1393 if (device_config_needed == NOTHING)
1397 * If we decided that a re-configuration needs to be done,
1398 * schedule it here on the way out the door, please close the door
1403 * Find the scsi_device associated with the SCSI address,
1404 * and mark it as changed, invalidating the cache. This deals
1405 * with changes to existing device IDs.
1408 if (!dev || !dev->scsi_host_ptr)
1411 * force reload of disk info via aac_probe_container
1413 if ((channel == CONTAINER_CHANNEL) &&
1414 (device_config_needed != NOTHING)) {
1415 if (dev->fsa_dev[container].valid == 1)
1416 dev->fsa_dev[container].valid = 2;
1417 aac_probe_container(dev, container);
1419 device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun);
1421 switch (device_config_needed) {
1423 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1424 scsi_remove_device(device);
1426 if (scsi_device_online(device)) {
1427 scsi_device_set_state(device, SDEV_OFFLINE);
1428 sdev_printk(KERN_INFO, device,
1429 "Device offlined - %s\n",
1430 (channel == CONTAINER_CHANNEL) ?
1432 "enclosure services event");
1437 if (!scsi_device_online(device)) {
1438 sdev_printk(KERN_INFO, device,
1439 "Device online - %s\n",
1440 (channel == CONTAINER_CHANNEL) ?
1442 "enclosure services event");
1443 scsi_device_set_state(device, SDEV_RUNNING);
1447 if ((channel == CONTAINER_CHANNEL)
1448 && (!dev->fsa_dev[container].valid)) {
1449 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1450 scsi_remove_device(device);
1452 if (!scsi_device_online(device))
1454 scsi_device_set_state(device, SDEV_OFFLINE);
1455 sdev_printk(KERN_INFO, device,
1456 "Device offlined - %s\n",
1461 scsi_rescan_device(&device->sdev_gendev);
1466 scsi_device_put(device);
1467 device_config_needed = NOTHING;
1469 if (device_config_needed == ADD)
1470 scsi_add_device(dev->scsi_host_ptr, channel, id, lun);
1471 if (channel == CONTAINER_CHANNEL) {
1473 device_config_needed = NOTHING;
1478 static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
1482 struct Scsi_Host *host;
1483 struct scsi_device *dev;
1484 struct scsi_cmnd *command;
1485 struct scsi_cmnd *command_list;
1489 int num_of_fibs = 0;
1493 * - host is locked, unless called by the aacraid thread.
1494 * (a matter of convenience, due to legacy issues surrounding
1495 * eh_host_adapter_reset).
1496 * - in_reset is asserted, so no new i/o is getting to the
1498 * - The card is dead, or will be very shortly ;-/ so no new
1499 * commands are completing in the interrupt service.
1501 host = aac->scsi_host_ptr;
1502 scsi_block_requests(host);
1503 aac_adapter_disable_int(aac);
1504 if (aac->thread && aac->thread->pid != current->pid) {
1505 spin_unlock_irq(host->host_lock);
1506 kthread_stop(aac->thread);
1512 * If a positive health, means in a known DEAD PANIC
1513 * state and the adapter could be reset to `try again'.
1515 bled = forced ? 0 : aac_adapter_check_health(aac);
1516 retval = aac_adapter_restart(aac, bled, reset_type);
1522 * Loop through the fibs, close the synchronous FIBS
1525 num_of_fibs = aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB;
1526 for (index = 0; index < num_of_fibs; index++) {
1528 struct fib *fib = &aac->fibs[index];
1529 __le32 XferState = fib->hw_fib_va->header.XferState;
1530 bool is_response_expected = false;
1532 if (!(XferState & cpu_to_le32(NoResponseExpected | Async)) &&
1533 (XferState & cpu_to_le32(ResponseExpected)))
1534 is_response_expected = true;
1536 if (is_response_expected
1537 || fib->flags & FIB_CONTEXT_FLAG_WAIT) {
1538 unsigned long flagv;
1539 spin_lock_irqsave(&fib->event_lock, flagv);
1540 complete(&fib->event_wait);
1541 spin_unlock_irqrestore(&fib->event_lock, flagv);
1546 /* Give some extra time for ioctls to complete. */
1549 index = aac->cardtype;
1552 * Re-initialize the adapter, first free resources, then carefully
1553 * apply the initialization sequence to come back again. Only risk
1554 * is a change in Firmware dropping cache, it is assumed the caller
1555 * will ensure that i/o is queisced and the card is flushed in that
1559 aac_fib_map_free(aac);
1560 dma_free_coherent(&aac->pdev->dev, aac->comm_size, aac->comm_addr,
1562 aac->comm_addr = NULL;
1566 kfree(aac->fsa_dev);
1567 aac->fsa_dev = NULL;
1569 dmamask = DMA_BIT_MASK(32);
1570 quirks = aac_get_driver_ident(index)->quirks;
1571 if (quirks & AAC_QUIRK_31BIT)
1572 retval = pci_set_dma_mask(aac->pdev, dmamask);
1573 else if (!(quirks & AAC_QUIRK_SRC))
1574 retval = pci_set_dma_mask(aac->pdev, dmamask);
1576 retval = pci_set_consistent_dma_mask(aac->pdev, dmamask);
1578 if (quirks & AAC_QUIRK_31BIT && !retval) {
1579 dmamask = DMA_BIT_MASK(31);
1580 retval = pci_set_consistent_dma_mask(aac->pdev, dmamask);
1586 if ((retval = (*(aac_get_driver_ident(index)->init))(aac)))
1590 aac->thread = kthread_run(aac_command_thread, aac, "%s",
1592 if (IS_ERR(aac->thread)) {
1593 retval = PTR_ERR(aac->thread);
1598 (void)aac_get_adapter_info(aac);
1599 if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) {
1600 host->sg_tablesize = 34;
1601 host->max_sectors = (host->sg_tablesize * 8) + 112;
1603 if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
1604 host->sg_tablesize = 17;
1605 host->max_sectors = (host->sg_tablesize * 8) + 112;
1607 aac_get_config_status(aac, 1);
1608 aac_get_containers(aac);
1610 * This is where the assumption that the Adapter is quiesced
1613 command_list = NULL;
1614 __shost_for_each_device(dev, host) {
1615 unsigned long flags;
1616 spin_lock_irqsave(&dev->list_lock, flags);
1617 list_for_each_entry(command, &dev->cmd_list, list)
1618 if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
1619 command->SCp.buffer = (struct scatterlist *)command_list;
1620 command_list = command;
1622 spin_unlock_irqrestore(&dev->list_lock, flags);
1624 while ((command = command_list)) {
1625 command_list = (struct scsi_cmnd *)command->SCp.buffer;
1626 command->SCp.buffer = NULL;
1627 command->result = DID_OK << 16
1628 | COMMAND_COMPLETE << 8
1629 | SAM_STAT_TASK_SET_FULL;
1630 command->SCp.phase = AAC_OWNER_ERROR_HANDLER;
1631 command->scsi_done(command);
1634 * Any Device that was already marked offline needs to be marked
1637 __shost_for_each_device(dev, host) {
1638 if (!scsi_device_online(dev))
1639 scsi_device_set_state(dev, SDEV_RUNNING);
1645 scsi_unblock_requests(host);
1648 * Issue bus rescan to catch any configuration that might have
1651 if (!retval && !is_kdump_kernel()) {
1652 dev_info(&aac->pdev->dev, "Scheduling bus rescan\n");
1653 aac_schedule_safw_scan_worker(aac);
1657 spin_lock_irq(host->host_lock);
1662 int aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
1664 unsigned long flagv = 0;
1666 struct Scsi_Host * host;
1669 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1672 if (aac->in_reset) {
1673 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1677 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1680 * Wait for all commands to complete to this specific
1681 * target (block maximum 60 seconds). Although not necessary,
1682 * it does make us a good storage citizen.
1684 host = aac->scsi_host_ptr;
1685 scsi_block_requests(host);
1687 /* Quiesce build, flush cache, write through mode */
1689 aac_send_shutdown(aac);
1690 spin_lock_irqsave(host->host_lock, flagv);
1691 bled = forced ? forced :
1692 (aac_check_reset != 0 && aac_check_reset != 1);
1693 retval = _aac_reset_adapter(aac, bled, reset_type);
1694 spin_unlock_irqrestore(host->host_lock, flagv);
1696 if ((forced < 2) && (retval == -ENODEV)) {
1697 /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */
1698 struct fib * fibctx = aac_fib_alloc(aac);
1700 struct aac_pause *cmd;
1703 aac_fib_init(fibctx);
1705 cmd = (struct aac_pause *) fib_data(fibctx);
1707 cmd->command = cpu_to_le32(VM_ContainerConfig);
1708 cmd->type = cpu_to_le32(CT_PAUSE_IO);
1709 cmd->timeout = cpu_to_le32(1);
1710 cmd->min = cpu_to_le32(1);
1711 cmd->noRescan = cpu_to_le32(1);
1712 cmd->count = cpu_to_le32(0);
1714 status = aac_fib_send(ContainerCommand,
1716 sizeof(struct aac_pause),
1718 -2 /* Timeout silently */, 1,
1722 aac_fib_complete(fibctx);
1723 /* FIB should be freed only after getting
1724 * the response from the F/W */
1725 if (status != -ERESTARTSYS)
1726 aac_fib_free(fibctx);
1733 int aac_check_health(struct aac_dev * aac)
1736 unsigned long time_now, flagv = 0;
1737 struct list_head * entry;
1739 /* Extending the scope of fib_lock slightly to protect aac->in_reset */
1740 if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1743 if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) {
1744 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1751 * aac_aifcmd.command = AifCmdEventNotify = 1
1752 * aac_aifcmd.seqnum = 0xFFFFFFFF
1753 * aac_aifcmd.data[0] = AifEnExpEvent = 23
1754 * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3
1755 * aac.aifcmd.data[2] = AifHighPriority = 3
1756 * aac.aifcmd.data[3] = BlinkLED
1759 time_now = jiffies/HZ;
1760 entry = aac->fib_list.next;
1763 * For each Context that is on the
1764 * fibctxList, make a copy of the
1765 * fib, and then set the event to wake up the
1766 * thread that is waiting for it.
1768 while (entry != &aac->fib_list) {
1770 * Extract the fibctx
1772 struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next);
1773 struct hw_fib * hw_fib;
1776 * Check if the queue is getting
1779 if (fibctx->count > 20) {
1781 * It's *not* jiffies folks,
1782 * but jiffies / HZ, so do not
1785 u32 time_last = fibctx->jiffies;
1787 * Has it been > 2 minutes
1788 * since the last read off
1791 if ((time_now - time_last) > aif_timeout) {
1792 entry = entry->next;
1793 aac_close_fib_context(aac, fibctx);
1798 * Warning: no sleep allowed while
1801 hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC);
1802 fib = kzalloc(sizeof(struct fib), GFP_ATOMIC);
1803 if (fib && hw_fib) {
1804 struct aac_aifcmd * aif;
1806 fib->hw_fib_va = hw_fib;
1809 fib->type = FSAFS_NTC_FIB_CONTEXT;
1810 fib->size = sizeof (struct fib);
1811 fib->data = hw_fib->data;
1812 aif = (struct aac_aifcmd *)hw_fib->data;
1813 aif->command = cpu_to_le32(AifCmdEventNotify);
1814 aif->seqnum = cpu_to_le32(0xFFFFFFFF);
1815 ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent);
1816 ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic);
1817 ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority);
1818 ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED);
1821 * Put the FIB onto the
1824 list_add_tail(&fib->fiblink, &fibctx->fib_list);
1827 * Set the event to wake up the
1828 * thread that will waiting.
1830 complete(&fibctx->completion);
1832 printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
1836 entry = entry->next;
1839 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1842 printk(KERN_ERR "%s: Host adapter is dead (or got a PCI error) %d\n",
1843 aac->name, BlinkLED);
1847 printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
1854 static inline int is_safw_raid_volume(struct aac_dev *aac, int bus, int target)
1856 return bus == CONTAINER_CHANNEL && target < aac->maximum_num_containers;
1859 static struct scsi_device *aac_lookup_safw_scsi_device(struct aac_dev *dev,
1863 if (bus != CONTAINER_CHANNEL)
1864 bus = aac_phys_to_logical(bus);
1866 return scsi_device_lookup(dev->scsi_host_ptr, bus, target, 0);
1869 static int aac_add_safw_device(struct aac_dev *dev, int bus, int target)
1871 if (bus != CONTAINER_CHANNEL)
1872 bus = aac_phys_to_logical(bus);
1874 return scsi_add_device(dev->scsi_host_ptr, bus, target, 0);
1877 static void aac_put_safw_scsi_device(struct scsi_device *sdev)
1880 scsi_device_put(sdev);
1883 static void aac_remove_safw_device(struct aac_dev *dev, int bus, int target)
1885 struct scsi_device *sdev;
1887 sdev = aac_lookup_safw_scsi_device(dev, bus, target);
1888 scsi_remove_device(sdev);
1889 aac_put_safw_scsi_device(sdev);
1892 static inline int aac_is_safw_scan_count_equal(struct aac_dev *dev,
1893 int bus, int target)
1895 return dev->hba_map[bus][target].scan_counter == dev->scan_counter;
1898 static int aac_is_safw_target_valid(struct aac_dev *dev, int bus, int target)
1900 if (is_safw_raid_volume(dev, bus, target))
1901 return dev->fsa_dev[target].valid;
1903 return aac_is_safw_scan_count_equal(dev, bus, target);
1906 static int aac_is_safw_device_exposed(struct aac_dev *dev, int bus, int target)
1909 struct scsi_device *sdev;
1911 sdev = aac_lookup_safw_scsi_device(dev, bus, target);
1914 aac_put_safw_scsi_device(sdev);
1919 static int aac_update_safw_host_devices(struct aac_dev *dev)
1927 rcode = aac_setup_safw_adapter(dev);
1928 if (unlikely(rcode < 0)) {
1932 for (i = 0; i < AAC_BUS_TARGET_LOOP; i++) {
1934 bus = get_bus_number(i);
1935 target = get_target_number(i);
1937 is_exposed = aac_is_safw_device_exposed(dev, bus, target);
1939 if (aac_is_safw_target_valid(dev, bus, target) && !is_exposed)
1940 aac_add_safw_device(dev, bus, target);
1941 else if (!aac_is_safw_target_valid(dev, bus, target) &&
1943 aac_remove_safw_device(dev, bus, target);
1949 static int aac_scan_safw_host(struct aac_dev *dev)
1953 rcode = aac_update_safw_host_devices(dev);
1955 aac_schedule_safw_scan_worker(dev);
1960 int aac_scan_host(struct aac_dev *dev)
1964 mutex_lock(&dev->scan_mutex);
1965 if (dev->sa_firmware)
1966 rcode = aac_scan_safw_host(dev);
1968 scsi_scan_host(dev->scsi_host_ptr);
1969 mutex_unlock(&dev->scan_mutex);
1975 * aac_handle_sa_aif Handle a message from the firmware
1976 * @dev: Which adapter this fib is from
1977 * @fibptr: Pointer to fibptr from adapter
1979 * This routine handles a driver notify fib from the adapter and
1980 * dispatches it to the appropriate routine for handling.
1982 static void aac_handle_sa_aif(struct aac_dev *dev, struct fib *fibptr)
1987 if (fibptr->hbacmd_size & SA_AIF_HOTPLUG)
1988 events = SA_AIF_HOTPLUG;
1989 else if (fibptr->hbacmd_size & SA_AIF_HARDWARE)
1990 events = SA_AIF_HARDWARE;
1991 else if (fibptr->hbacmd_size & SA_AIF_PDEV_CHANGE)
1992 events = SA_AIF_PDEV_CHANGE;
1993 else if (fibptr->hbacmd_size & SA_AIF_LDEV_CHANGE)
1994 events = SA_AIF_LDEV_CHANGE;
1995 else if (fibptr->hbacmd_size & SA_AIF_BPSTAT_CHANGE)
1996 events = SA_AIF_BPSTAT_CHANGE;
1997 else if (fibptr->hbacmd_size & SA_AIF_BPCFG_CHANGE)
1998 events = SA_AIF_BPCFG_CHANGE;
2001 case SA_AIF_HOTPLUG:
2002 case SA_AIF_HARDWARE:
2003 case SA_AIF_PDEV_CHANGE:
2004 case SA_AIF_LDEV_CHANGE:
2005 case SA_AIF_BPCFG_CHANGE:
2011 case SA_AIF_BPSTAT_CHANGE:
2012 /* currently do nothing */
2016 for (i = 1; i <= 10; ++i) {
2017 events = src_readl(dev, MUnit.IDR);
2018 if (events & (1<<23)) {
2019 pr_warn(" AIF not cleared by firmware - %d/%d)\n",
2026 static int get_fib_count(struct aac_dev *dev)
2028 unsigned int num = 0;
2029 struct list_head *entry;
2030 unsigned long flagv;
2033 * Warning: no sleep allowed while
2034 * holding spinlock. We take the estimate
2035 * and pre-allocate a set of fibs outside the
2038 num = le32_to_cpu(dev->init->r7.adapter_fibs_size)
2039 / sizeof(struct hw_fib); /* some extra */
2040 spin_lock_irqsave(&dev->fib_lock, flagv);
2041 entry = dev->fib_list.next;
2042 while (entry != &dev->fib_list) {
2043 entry = entry->next;
2046 spin_unlock_irqrestore(&dev->fib_lock, flagv);
2051 static int fillup_pools(struct aac_dev *dev, struct hw_fib **hw_fib_pool,
2052 struct fib **fib_pool,
2055 struct hw_fib **hw_fib_p;
2058 hw_fib_p = hw_fib_pool;
2060 while (hw_fib_p < &hw_fib_pool[num]) {
2061 *(hw_fib_p) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL);
2062 if (!(*(hw_fib_p++))) {
2067 *(fib_p) = kmalloc(sizeof(struct fib), GFP_KERNEL);
2068 if (!(*(fib_p++))) {
2069 kfree(*(--hw_fib_p));
2075 * Get the actual number of allocated fibs
2077 num = hw_fib_p - hw_fib_pool;
2081 static void wakeup_fibctx_threads(struct aac_dev *dev,
2082 struct hw_fib **hw_fib_pool,
2083 struct fib **fib_pool,
2085 struct hw_fib *hw_fib,
2088 unsigned long flagv;
2089 struct list_head *entry;
2090 struct hw_fib **hw_fib_p;
2092 u32 time_now, time_last;
2093 struct hw_fib *hw_newfib;
2095 struct aac_fib_context *fibctx;
2097 time_now = jiffies/HZ;
2098 spin_lock_irqsave(&dev->fib_lock, flagv);
2099 entry = dev->fib_list.next;
2101 * For each Context that is on the
2102 * fibctxList, make a copy of the
2103 * fib, and then set the event to wake up the
2104 * thread that is waiting for it.
2107 hw_fib_p = hw_fib_pool;
2109 while (entry != &dev->fib_list) {
2111 * Extract the fibctx
2113 fibctx = list_entry(entry, struct aac_fib_context,
2116 * Check if the queue is getting
2119 if (fibctx->count > 20) {
2121 * It's *not* jiffies folks,
2122 * but jiffies / HZ so do not
2125 time_last = fibctx->jiffies;
2127 * Has it been > 2 minutes
2128 * since the last read off
2131 if ((time_now - time_last) > aif_timeout) {
2132 entry = entry->next;
2133 aac_close_fib_context(dev, fibctx);
2138 * Warning: no sleep allowed while
2141 if (hw_fib_p >= &hw_fib_pool[num]) {
2142 pr_warn("aifd: didn't allocate NewFib\n");
2143 entry = entry->next;
2147 hw_newfib = *hw_fib_p;
2148 *(hw_fib_p++) = NULL;
2152 * Make the copy of the FIB
2154 memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib));
2155 memcpy(newfib, fib, sizeof(struct fib));
2156 newfib->hw_fib_va = hw_newfib;
2158 * Put the FIB onto the
2161 list_add_tail(&newfib->fiblink, &fibctx->fib_list);
2164 * Set the event to wake up the
2165 * thread that is waiting.
2167 complete(&fibctx->completion);
2169 entry = entry->next;
2172 * Set the status of this FIB
2174 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
2175 aac_fib_adapter_complete(fib, sizeof(u32));
2176 spin_unlock_irqrestore(&dev->fib_lock, flagv);
2180 static void aac_process_events(struct aac_dev *dev)
2182 struct hw_fib *hw_fib;
2184 unsigned long flags;
2187 t_lock = dev->queues->queue[HostNormCmdQueue].lock;
2188 spin_lock_irqsave(t_lock, flags);
2190 while (!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) {
2191 struct list_head *entry;
2192 struct aac_aifcmd *aifcmd;
2194 struct hw_fib **hw_fib_pool, **hw_fib_p;
2195 struct fib **fib_pool, **fib_p;
2197 set_current_state(TASK_RUNNING);
2199 entry = dev->queues->queue[HostNormCmdQueue].cmdq.next;
2202 t_lock = dev->queues->queue[HostNormCmdQueue].lock;
2203 spin_unlock_irqrestore(t_lock, flags);
2205 fib = list_entry(entry, struct fib, fiblink);
2206 hw_fib = fib->hw_fib_va;
2207 if (dev->sa_firmware) {
2209 aac_handle_sa_aif(dev, fib);
2210 aac_fib_adapter_complete(fib, (u16)sizeof(u32));
2214 * We will process the FIB here or pass it to a
2215 * worker thread that is TBD. We Really can't
2216 * do anything at this point since we don't have
2217 * anything defined for this thread to do.
2219 memset(fib, 0, sizeof(struct fib));
2220 fib->type = FSAFS_NTC_FIB_CONTEXT;
2221 fib->size = sizeof(struct fib);
2222 fib->hw_fib_va = hw_fib;
2223 fib->data = hw_fib->data;
2226 * We only handle AifRequest fibs from the adapter.
2229 aifcmd = (struct aac_aifcmd *) hw_fib->data;
2230 if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) {
2231 /* Handle Driver Notify Events */
2232 aac_handle_aif(dev, fib);
2233 *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
2234 aac_fib_adapter_complete(fib, (u16)sizeof(u32));
2238 * The u32 here is important and intended. We are using
2239 * 32bit wrapping time to fit the adapter field
2243 if (aifcmd->command == cpu_to_le32(AifCmdEventNotify)
2244 || aifcmd->command == cpu_to_le32(AifCmdJobProgress)) {
2245 aac_handle_aif(dev, fib);
2249 * get number of fibs to process
2251 num = get_fib_count(dev);
2255 hw_fib_pool = kmalloc_array(num, sizeof(struct hw_fib *),
2260 fib_pool = kmalloc_array(num, sizeof(struct fib *), GFP_KERNEL);
2262 goto free_hw_fib_pool;
2265 * Fill up fib pointer pools with actual fibs
2268 num = fillup_pools(dev, hw_fib_pool, fib_pool, num);
2273 * wakeup the thread that is waiting for
2274 * the response from fw (ioctl)
2276 wakeup_fibctx_threads(dev, hw_fib_pool, fib_pool,
2280 /* Free up the remaining resources */
2281 hw_fib_p = hw_fib_pool;
2283 while (hw_fib_p < &hw_fib_pool[num]) {
2294 t_lock = dev->queues->queue[HostNormCmdQueue].lock;
2295 spin_lock_irqsave(t_lock, flags);
2298 * There are no more AIF's
2300 t_lock = dev->queues->queue[HostNormCmdQueue].lock;
2301 spin_unlock_irqrestore(t_lock, flags);
2304 static int aac_send_wellness_command(struct aac_dev *dev, char *wellness_str,
2307 struct aac_srb *srbcmd;
2308 struct sgmap64 *sg64;
2315 fibptr = aac_fib_alloc(dev);
2319 dma_buf = dma_alloc_coherent(&dev->pdev->dev, datasize, &addr,
2324 aac_fib_init(fibptr);
2326 vbus = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_bus);
2327 vid = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_target);
2329 srbcmd = (struct aac_srb *)fib_data(fibptr);
2331 srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);
2332 srbcmd->channel = cpu_to_le32(vbus);
2333 srbcmd->id = cpu_to_le32(vid);
2335 srbcmd->flags = cpu_to_le32(SRB_DataOut);
2336 srbcmd->timeout = cpu_to_le32(10);
2337 srbcmd->retry_limit = 0;
2338 srbcmd->cdb_size = cpu_to_le32(12);
2339 srbcmd->count = cpu_to_le32(datasize);
2341 memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));
2342 srbcmd->cdb[0] = BMIC_OUT;
2343 srbcmd->cdb[6] = WRITE_HOST_WELLNESS;
2344 memcpy(dma_buf, (char *)wellness_str, datasize);
2346 sg64 = (struct sgmap64 *)&srbcmd->sg;
2347 sg64->count = cpu_to_le32(1);
2348 sg64->sg[0].addr[1] = cpu_to_le32((u32)(((addr) >> 16) >> 16));
2349 sg64->sg[0].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));
2350 sg64->sg[0].count = cpu_to_le32(datasize);
2352 ret = aac_fib_send(ScsiPortCommand64, fibptr, sizeof(struct aac_srb),
2353 FsaNormal, 1, 1, NULL, NULL);
2355 dma_free_coherent(&dev->pdev->dev, datasize, dma_buf, addr);
2358 * Do not set XferState to zero unless
2359 * receives a response from F/W
2362 aac_fib_complete(fibptr);
2365 * FIB should be freed only after
2366 * getting the response from the F/W
2368 if (ret != -ERESTARTSYS)
2374 aac_fib_free(fibptr);
2378 int aac_send_safw_hostttime(struct aac_dev *dev, struct timespec64 *now)
2381 char wellness_str[] = "<HW>TD\010\0\0\0\0\0\0\0\0\0DW\0\0ZZ";
2382 u32 datasize = sizeof(wellness_str);
2383 time64_t local_time;
2386 if (!dev->sa_firmware)
2389 local_time = (now->tv_sec - (sys_tz.tz_minuteswest * 60));
2390 time64_to_tm(local_time, 0, &cur_tm);
2392 cur_tm.tm_year += 1900;
2393 wellness_str[8] = bin2bcd(cur_tm.tm_hour);
2394 wellness_str[9] = bin2bcd(cur_tm.tm_min);
2395 wellness_str[10] = bin2bcd(cur_tm.tm_sec);
2396 wellness_str[12] = bin2bcd(cur_tm.tm_mon);
2397 wellness_str[13] = bin2bcd(cur_tm.tm_mday);
2398 wellness_str[14] = bin2bcd(cur_tm.tm_year / 100);
2399 wellness_str[15] = bin2bcd(cur_tm.tm_year % 100);
2401 ret = aac_send_wellness_command(dev, wellness_str, datasize);
2407 int aac_send_hosttime(struct aac_dev *dev, struct timespec64 *now)
2413 fibptr = aac_fib_alloc(dev);
2417 aac_fib_init(fibptr);
2418 info = (__le32 *)fib_data(fibptr);
2419 *info = cpu_to_le32(now->tv_sec); /* overflow in y2106 */
2420 ret = aac_fib_send(SendHostTime, fibptr, sizeof(*info), FsaNormal,
2424 * Do not set XferState to zero unless
2425 * receives a response from F/W
2428 aac_fib_complete(fibptr);
2431 * FIB should be freed only after
2432 * getting the response from the F/W
2434 if (ret != -ERESTARTSYS)
2435 aac_fib_free(fibptr);
2442 * aac_command_thread - command processing thread
2443 * @dev: Adapter to monitor
2445 * Waits on the commandready event in it's queue. When the event gets set
2446 * it will pull FIBs off it's queue. It will continue to pull FIBs off
2447 * until the queue is empty. When the queue is empty it will wait for
2451 int aac_command_thread(void *data)
2453 struct aac_dev *dev = data;
2454 DECLARE_WAITQUEUE(wait, current);
2455 unsigned long next_jiffies = jiffies + HZ;
2456 unsigned long next_check_jiffies = next_jiffies;
2457 long difference = HZ;
2460 * We can only have one thread per adapter for AIF's.
2462 if (dev->aif_thread)
2466 * Let the DPC know it has a place to send the AIF's to.
2468 dev->aif_thread = 1;
2469 add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
2470 set_current_state(TASK_INTERRUPTIBLE);
2471 dprintk ((KERN_INFO "aac_command_thread start\n"));
2474 aac_process_events(dev);
2477 * Background activity
2479 if ((time_before(next_check_jiffies,next_jiffies))
2480 && ((difference = next_check_jiffies - jiffies) <= 0)) {
2481 next_check_jiffies = next_jiffies;
2482 if (aac_adapter_check_health(dev) == 0) {
2483 difference = ((long)(unsigned)check_interval)
2485 next_check_jiffies = jiffies + difference;
2486 } else if (!dev->queues)
2489 if (!time_before(next_check_jiffies,next_jiffies)
2490 && ((difference = next_jiffies - jiffies) <= 0)) {
2491 struct timespec64 now;
2494 /* Don't even try to talk to adapter if its sick */
2495 ret = aac_adapter_check_health(dev);
2496 if (ret || !dev->queues)
2498 next_check_jiffies = jiffies
2499 + ((long)(unsigned)check_interval)
2501 ktime_get_real_ts64(&now);
2503 /* Synchronize our watches */
2504 if (((NSEC_PER_SEC - (NSEC_PER_SEC / HZ)) > now.tv_nsec)
2505 && (now.tv_nsec > (NSEC_PER_SEC / HZ)))
2506 difference = HZ + HZ / 2 -
2507 now.tv_nsec / (NSEC_PER_SEC / HZ);
2509 if (now.tv_nsec > NSEC_PER_SEC / 2)
2512 if (dev->sa_firmware)
2514 aac_send_safw_hostttime(dev, &now);
2516 ret = aac_send_hosttime(dev, &now);
2518 difference = (long)(unsigned)update_interval*HZ;
2520 next_jiffies = jiffies + difference;
2521 if (time_before(next_check_jiffies,next_jiffies))
2522 difference = next_check_jiffies - jiffies;
2524 if (difference <= 0)
2526 set_current_state(TASK_INTERRUPTIBLE);
2528 if (kthread_should_stop())
2532 * we probably want usleep_range() here instead of the
2533 * jiffies computation
2535 schedule_timeout(difference);
2537 if (kthread_should_stop())
2541 remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
2542 dev->aif_thread = 0;
2546 int aac_acquire_irq(struct aac_dev *dev)
2552 if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) {
2553 for (i = 0; i < dev->max_msix; i++) {
2554 dev->aac_msix[i].vector_no = i;
2555 dev->aac_msix[i].dev = dev;
2556 if (request_irq(pci_irq_vector(dev->pdev, i),
2557 dev->a_ops.adapter_intr,
2558 0, "aacraid", &(dev->aac_msix[i]))) {
2559 printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n",
2560 dev->name, dev->id, i);
2561 for (j = 0 ; j < i ; j++)
2562 free_irq(pci_irq_vector(dev->pdev, j),
2563 &(dev->aac_msix[j]));
2564 pci_disable_msix(dev->pdev);
2569 dev->aac_msix[0].vector_no = 0;
2570 dev->aac_msix[0].dev = dev;
2572 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
2573 IRQF_SHARED, "aacraid",
2574 &(dev->aac_msix[0])) < 0) {
2576 pci_disable_msi(dev->pdev);
2577 printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
2578 dev->name, dev->id);
2585 void aac_free_irq(struct aac_dev *dev)
2589 if (aac_is_src(dev)) {
2590 if (dev->max_msix > 1) {
2591 for (i = 0; i < dev->max_msix; i++)
2592 free_irq(pci_irq_vector(dev->pdev, i),
2593 &(dev->aac_msix[i]));
2595 free_irq(dev->pdev->irq, &(dev->aac_msix[0]));
2598 free_irq(dev->pdev->irq, dev);
2601 pci_disable_msi(dev->pdev);
2602 else if (dev->max_msix > 1)
2603 pci_disable_msix(dev->pdev);