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)
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* This program is free software; you can redistribute it and/or modify
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* 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)
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* This program is distributed in the hope that it will be useful,
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* 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.
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* 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
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* 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>
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#include <linux/init.h>
35
#include <linux/types.h>
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#include <linux/sched.h>
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#include <linux/slab.h>
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#include <linux/completion.h>
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#include <linux/blkdev.h>
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#include <linux/delay.h>
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#include <linux/kthread.h>
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#include <linux/interrupt.h>
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#include <linux/semaphore.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_host.h>
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#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)
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"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,
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AAC_NUM_MGT_FIB, &dev->hw_fib_pa));
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dev->hw_fib_va = pci_alloc_consistent(dev->pdev,
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(dev->max_fib_size + sizeof(struct aac_fib_xporthdr))
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* (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
pci_free_consistent(dev->pdev,
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dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB),
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dev->hw_fib_va, dev->hw_fib_pa);
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dev->hw_fib_va = NULL;
94
* aac_fib_setup - setup the fibs
95
* @dev: Adapter to set up
97
* Allocate the PCI space for the fibs, map it and then initialise the
98
* fib area, the unmapped fib data and also the free list
101
int aac_fib_setup(struct aac_dev * dev)
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struct hw_fib *hw_fib;
105
dma_addr_t hw_fib_pa;
108
while (((i = fib_map_alloc(dev)) == -ENOMEM)
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&& (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) {
110
dev->init->MaxIoCommands = cpu_to_le32((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) >> 1);
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dev->scsi_host_ptr->can_queue = le32_to_cpu(dev->init->MaxIoCommands) - AAC_NUM_MGT_FIB;
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/* 32 byte alignment for PMC */
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hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1);
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dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
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(hw_fib_pa - dev->hw_fib_pa));
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dev->hw_fib_pa = hw_fib_pa;
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memset(dev->hw_fib_va, 0,
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(dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) *
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(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
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/* add Xport header */
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dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
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sizeof(struct aac_fib_xporthdr));
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dev->hw_fib_pa += sizeof(struct aac_fib_xporthdr);
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hw_fib = dev->hw_fib_va;
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hw_fib_pa = dev->hw_fib_pa;
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* Initialise the fibs
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for (i = 0, fibptr = &dev->fibs[i];
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i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
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fibptr->hw_fib_va = hw_fib;
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fibptr->data = (void *) fibptr->hw_fib_va->data;
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fibptr->next = fibptr+1; /* Forward chain the fibs */
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sema_init(&fibptr->event_wait, 0);
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spin_lock_init(&fibptr->event_lock);
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hw_fib->header.XferState = cpu_to_le32(0xffffffff);
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hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size);
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fibptr->hw_fib_pa = hw_fib_pa;
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hw_fib = (struct hw_fib *)((unsigned char *)hw_fib +
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dev->max_fib_size + sizeof(struct aac_fib_xporthdr));
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hw_fib_pa = hw_fib_pa +
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dev->max_fib_size + sizeof(struct aac_fib_xporthdr);
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* Add the fib chain to the free list
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dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL;
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* Enable this to debug out of queue space
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dev->free_fib = &dev->fibs[0];
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* aac_fib_alloc - allocate a fib
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* @dev: Adapter to allocate the fib for
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* Allocate a fib from the adapter fib pool. If the pool is empty we
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struct fib *aac_fib_alloc(struct aac_dev *dev)
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spin_lock_irqsave(&dev->fib_lock, flags);
177
fibptr = dev->free_fib;
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spin_unlock_irqrestore(&dev->fib_lock, flags);
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dev->free_fib = fibptr->next;
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spin_unlock_irqrestore(&dev->fib_lock, flags);
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* Set the proper node type code and node byte size
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fibptr->type = FSAFS_NTC_FIB_CONTEXT;
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fibptr->size = sizeof(struct fib);
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* Null out fields that depend on being zero at the start of
193
fibptr->hw_fib_va->header.XferState = 0;
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fibptr->callback = NULL;
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fibptr->callback_data = NULL;
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* aac_fib_free - free a fib
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* @fibptr: fib to free up
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* Frees up a fib and places it on the appropriate queue
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void aac_fib_free(struct fib *fibptr)
210
unsigned long flags, flagsv;
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spin_lock_irqsave(&fibptr->event_lock, flagsv);
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if (fibptr->done == 2) {
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spin_unlock_irqrestore(&fibptr->event_lock, flagsv);
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spin_unlock_irqrestore(&fibptr->event_lock, flagsv);
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spin_lock_irqsave(&fibptr->dev->fib_lock, flags);
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if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
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aac_config.fib_timeouts++;
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if (fibptr->hw_fib_va->header.XferState != 0) {
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printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
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le32_to_cpu(fibptr->hw_fib_va->header.XferState));
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fibptr->next = fibptr->dev->free_fib;
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fibptr->dev->free_fib = fibptr;
229
spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags);
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* aac_fib_init - initialise a fib
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* @fibptr: The fib to initialize
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* Set up the generic fib fields ready for use
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void aac_fib_init(struct fib *fibptr)
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struct hw_fib *hw_fib = fibptr->hw_fib_va;
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hw_fib->header.StructType = FIB_MAGIC;
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hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size);
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hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable);
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hw_fib->header.SenderFibAddress = 0; /* Filled in later if needed */
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hw_fib->header.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa);
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hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size);
252
* fib_deallocate - deallocate a fib
253
* @fibptr: fib to deallocate
255
* Will deallocate and return to the free pool the FIB pointed to by the
259
static void fib_dealloc(struct fib * fibptr)
261
struct hw_fib *hw_fib = fibptr->hw_fib_va;
262
BUG_ON(hw_fib->header.StructType != FIB_MAGIC);
263
hw_fib->header.XferState = 0;
267
* Commuication primitives define and support the queuing method we use to
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* support host to adapter commuication. All queue accesses happen through
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* these routines and are the only routines which have a knowledge of the
270
* how these queues are implemented.
274
* aac_get_entry - get a queue entry
277
* @entry: Entry return
278
* @index: Index return
279
* @nonotify: notification control
281
* With a priority the routine returns a queue entry if the queue has free entries. If the queue
282
* is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
286
static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify)
288
struct aac_queue * q;
292
* All of the queues wrap when they reach the end, so we check
293
* to see if they have reached the end and if they have we just
294
* set the index back to zero. This is a wrap. You could or off
295
* the high bits in all updates but this is a bit faster I think.
298
q = &dev->queues->queue[qid];
300
idx = *index = le32_to_cpu(*(q->headers.producer));
301
/* Interrupt Moderation, only interrupt for first two entries */
302
if (idx != le32_to_cpu(*(q->headers.consumer))) {
304
if (qid == AdapNormCmdQueue)
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idx = ADAP_NORM_CMD_ENTRIES;
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idx = ADAP_NORM_RESP_ENTRIES;
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if (idx != le32_to_cpu(*(q->headers.consumer)))
313
if (qid == AdapNormCmdQueue) {
314
if (*index >= ADAP_NORM_CMD_ENTRIES)
315
*index = 0; /* Wrap to front of the Producer Queue. */
317
if (*index >= ADAP_NORM_RESP_ENTRIES)
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*index = 0; /* Wrap to front of the Producer Queue. */
322
if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) {
323
printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
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*entry = q->base + *index;
333
* aac_queue_get - get the next free QE
335
* @index: Returned index
336
* @priority: Priority of fib
337
* @fib: Fib to associate with the queue entry
338
* @wait: Wait if queue full
339
* @fibptr: Driver fib object to go with fib
340
* @nonotify: Don't notify the adapter
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* Gets the next free QE off the requested priorty adapter command
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* queue and associates the Fib with the QE. The QE represented by
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* index is ready to insert on the queue when this routine returns
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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)
350
struct aac_entry * entry = NULL;
353
if (qid == AdapNormCmdQueue) {
354
/* if no entries wait for some if caller wants to */
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while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
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printk(KERN_ERR "GetEntries failed\n");
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* Setup queue entry with a command, status and fib mapped
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entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
364
while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
365
/* if no entries wait for some if caller wants to */
368
* Setup queue entry with command, status and fib mapped
370
entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
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entry->addr = hw_fib->header.SenderFibAddress;
372
/* Restore adapters pointer to the FIB */
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hw_fib->header.ReceiverFibAddress = hw_fib->header.SenderFibAddress; /* Let the adapter now where to find its data */
377
* If MapFib is true than we need to map the Fib and put pointers
378
* in the queue entry.
381
entry->addr = cpu_to_le32(fibptr->hw_fib_pa);
386
* Define the highest level of host to adapter communication routines.
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* These routines will support host to adapter FS commuication. These
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* routines have no knowledge of the commuication method used. This level
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* sends and receives FIBs. This level has no knowledge of how these FIBs
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* get passed back and forth.
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* aac_fib_send - send a fib to the adapter
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* @command: Command to send
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* @size: Size of fib data area
398
* @priority: Priority of Fib
399
* @wait: Async/sync select
400
* @reply: True if a reply is wanted
401
* @callback: Called with reply
402
* @callback_data: Passed to callback
404
* Sends the requested FIB to the adapter and optionally will wait for a
405
* response FIB. If the caller does not wish to wait for a response than
406
* an event to wait on must be supplied. This event will be set when a
407
* response FIB is received from the adapter.
410
int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
411
int priority, int wait, int reply, fib_callback callback,
414
struct aac_dev * dev = fibptr->dev;
415
struct hw_fib * hw_fib = fibptr->hw_fib_va;
416
unsigned long flags = 0;
417
unsigned long qflags;
418
unsigned long mflags = 0;
421
if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
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* There are 5 cases with the wait and response requested flags.
425
* The only invalid cases are if the caller requests to wait and
426
* does not request a response and if the caller does not want a
427
* response and the Fib is not allocated from pool. If a response
428
* is not requesed the Fib will just be deallocaed by the DPC
429
* routine when the response comes back from the adapter. No
430
* further processing will be done besides deleting the Fib. We
431
* will have a debug mode where the adapter can notify the host
432
* it had a problem and the host can log that fact.
435
if (wait && !reply) {
437
} else if (!wait && reply) {
438
hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected);
439
FIB_COUNTER_INCREMENT(aac_config.AsyncSent);
440
} else if (!wait && !reply) {
441
hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected);
442
FIB_COUNTER_INCREMENT(aac_config.NoResponseSent);
443
} else if (wait && reply) {
444
hw_fib->header.XferState |= cpu_to_le32(ResponseExpected);
445
FIB_COUNTER_INCREMENT(aac_config.NormalSent);
448
* Map the fib into 32bits by using the fib number
451
hw_fib->header.SenderFibAddress = cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2);
452
hw_fib->header.SenderData = (u32)(fibptr - dev->fibs);
454
* Set FIB state to indicate where it came from and if we want a
455
* response from the adapter. Also load the command from the
458
* Map the hw fib pointer as a 32bit value
460
hw_fib->header.Command = cpu_to_le16(command);
461
hw_fib->header.XferState |= cpu_to_le32(SentFromHost);
462
fibptr->hw_fib_va->header.Flags = 0; /* 0 the flags field - internal only*/
464
* Set the size of the Fib we want to send to the adapter
466
hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size);
467
if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) {
471
* Get a queue entry connect the FIB to it and send an notify
472
* the adapter a command is ready.
474
hw_fib->header.XferState |= cpu_to_le32(NormalPriority);
477
* Fill in the Callback and CallbackContext if we are not
481
fibptr->callback = callback;
482
fibptr->callback_data = callback_data;
483
fibptr->flags = FIB_CONTEXT_FLAG;
488
FIB_COUNTER_INCREMENT(aac_config.FibsSent);
490
dprintk((KERN_DEBUG "Fib contents:.\n"));
491
dprintk((KERN_DEBUG " Command = %d.\n", le32_to_cpu(hw_fib->header.Command)));
492
dprintk((KERN_DEBUG " SubCommand = %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command)));
493
dprintk((KERN_DEBUG " XferState = %x.\n", le32_to_cpu(hw_fib->header.XferState)));
494
dprintk((KERN_DEBUG " hw_fib va being sent=%p\n",fibptr->hw_fib_va));
495
dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
496
dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr));
503
spin_lock_irqsave(&dev->manage_lock, mflags);
504
if (dev->management_fib_count >= AAC_NUM_MGT_FIB) {
505
printk(KERN_INFO "No management Fibs Available:%d\n",
506
dev->management_fib_count);
507
spin_unlock_irqrestore(&dev->manage_lock, mflags);
510
dev->management_fib_count++;
511
spin_unlock_irqrestore(&dev->manage_lock, mflags);
512
spin_lock_irqsave(&fibptr->event_lock, flags);
515
if (aac_adapter_deliver(fibptr) != 0) {
516
printk(KERN_ERR "aac_fib_send: returned -EBUSY\n");
518
spin_unlock_irqrestore(&fibptr->event_lock, flags);
519
spin_lock_irqsave(&dev->manage_lock, mflags);
520
dev->management_fib_count--;
521
spin_unlock_irqrestore(&dev->manage_lock, mflags);
528
* If the caller wanted us to wait for response wait now.
532
spin_unlock_irqrestore(&fibptr->event_lock, flags);
533
/* Only set for first known interruptable command */
536
* *VERY* Dangerous to time out a command, the
537
* assumption is made that we have no hope of
538
* functioning because an interrupt routing or other
539
* hardware failure has occurred.
541
unsigned long count = 36000000L; /* 3 minutes */
542
while (down_trylock(&fibptr->event_wait)) {
545
struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue];
546
spin_lock_irqsave(q->lock, qflags);
548
spin_unlock_irqrestore(q->lock, qflags);
550
printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n"
551
"Usually a result of a PCI interrupt routing problem;\n"
552
"update mother board BIOS or consider utilizing one of\n"
553
"the SAFE mode kernel options (acpi, apic etc)\n");
557
if ((blink = aac_adapter_check_health(dev)) > 0) {
559
printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n"
560
"Usually a result of a serious unrecoverable hardware problem\n",
567
} else if (down_interruptible(&fibptr->event_wait)) {
568
/* Do nothing ... satisfy
569
* down_interruptible must_check */
572
spin_lock_irqsave(&fibptr->event_lock, flags);
573
if (fibptr->done == 0) {
574
fibptr->done = 2; /* Tell interrupt we aborted */
575
spin_unlock_irqrestore(&fibptr->event_lock, flags);
578
spin_unlock_irqrestore(&fibptr->event_lock, flags);
579
BUG_ON(fibptr->done == 0);
581
if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
586
* If the user does not want a response than return success otherwise
596
* aac_consumer_get - get the top of the queue
599
* @entry: Return entry
601
* Will return a pointer to the entry on the top of the queue requested that
602
* we are a consumer of, and return the address of the queue entry. It does
603
* not change the state of the queue.
606
int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry)
610
if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) {
614
* The consumer index must be wrapped if we have reached
615
* the end of the queue, else we just use the entry
616
* pointed to by the header index
618
if (le32_to_cpu(*q->headers.consumer) >= q->entries)
621
index = le32_to_cpu(*q->headers.consumer);
622
*entry = q->base + index;
629
* aac_consumer_free - free consumer entry
634
* Frees up the current top of the queue we are a consumer of. If the
635
* queue was full notify the producer that the queue is no longer full.
638
void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid)
643
if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer))
646
if (le32_to_cpu(*q->headers.consumer) >= q->entries)
647
*q->headers.consumer = cpu_to_le32(1);
649
le32_add_cpu(q->headers.consumer, 1);
654
case HostNormCmdQueue:
655
notify = HostNormCmdNotFull;
657
case HostNormRespQueue:
658
notify = HostNormRespNotFull;
664
aac_adapter_notify(dev, notify);
669
* aac_fib_adapter_complete - complete adapter issued fib
670
* @fibptr: fib to complete
673
* Will do all necessary work to complete a FIB that was sent from
677
int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
679
struct hw_fib * hw_fib = fibptr->hw_fib_va;
680
struct aac_dev * dev = fibptr->dev;
681
struct aac_queue * q;
682
unsigned long nointr = 0;
683
unsigned long qflags;
685
if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
690
if (hw_fib->header.XferState == 0) {
691
if (dev->comm_interface == AAC_COMM_MESSAGE)
696
* If we plan to do anything check the structure type first.
698
if (hw_fib->header.StructType != FIB_MAGIC) {
699
if (dev->comm_interface == AAC_COMM_MESSAGE)
704
* This block handles the case where the adapter had sent us a
705
* command and we have finished processing the command. We
706
* call completeFib when we are done processing the command
707
* and want to send a response back to the adapter. This will
708
* send the completed cdb to the adapter.
710
if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) {
711
if (dev->comm_interface == AAC_COMM_MESSAGE) {
715
hw_fib->header.XferState |= cpu_to_le32(HostProcessed);
717
size += sizeof(struct aac_fibhdr);
718
if (size > le16_to_cpu(hw_fib->header.SenderSize))
720
hw_fib->header.Size = cpu_to_le16(size);
722
q = &dev->queues->queue[AdapNormRespQueue];
723
spin_lock_irqsave(q->lock, qflags);
724
aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr);
725
*(q->headers.producer) = cpu_to_le32(index + 1);
726
spin_unlock_irqrestore(q->lock, qflags);
727
if (!(nointr & (int)aac_config.irq_mod))
728
aac_adapter_notify(dev, AdapNormRespQueue);
731
printk(KERN_WARNING "aac_fib_adapter_complete: "
732
"Unknown xferstate detected.\n");
739
* aac_fib_complete - fib completion handler
740
* @fib: FIB to complete
742
* Will do all necessary work to complete a FIB.
745
int aac_fib_complete(struct fib *fibptr)
748
struct hw_fib * hw_fib = fibptr->hw_fib_va;
751
* Check for a fib which has already been completed
754
if (hw_fib->header.XferState == 0)
757
* If we plan to do anything check the structure type first.
760
if (hw_fib->header.StructType != FIB_MAGIC)
763
* This block completes a cdb which orginated on the host and we
764
* just need to deallocate the cdb or reinit it. At this point the
765
* command is complete that we had sent to the adapter and this
766
* cdb could be reused.
768
spin_lock_irqsave(&fibptr->event_lock, flags);
769
if (fibptr->done == 2) {
770
spin_unlock_irqrestore(&fibptr->event_lock, flags);
773
spin_unlock_irqrestore(&fibptr->event_lock, flags);
775
if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) &&
776
(hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)))
780
else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost))
783
* This handles the case when the host has aborted the I/O
784
* to the adapter because the adapter is not responding
787
} else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) {
796
* aac_printf - handle printf from firmware
800
* Print a message passed to us by the controller firmware on the
804
void aac_printf(struct aac_dev *dev, u32 val)
806
char *cp = dev->printfbuf;
807
if (dev->printf_enabled)
809
int length = val & 0xffff;
810
int level = (val >> 16) & 0xffff;
813
* The size of the printfbuf is set in port.c
814
* There is no variable or define for it
820
if (level == LOG_AAC_HIGH_ERROR)
821
printk(KERN_WARNING "%s:%s", dev->name, cp);
823
printk(KERN_INFO "%s:%s", dev->name, cp);
830
* aac_handle_aif - Handle a message from the firmware
831
* @dev: Which adapter this fib is from
832
* @fibptr: Pointer to fibptr from adapter
834
* This routine handles a driver notify fib from the adapter and
835
* dispatches it to the appropriate routine for handling.
838
#define AIF_SNIFF_TIMEOUT (30*HZ)
839
static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
841
struct hw_fib * hw_fib = fibptr->hw_fib_va;
842
struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data;
843
u32 channel, id, lun, container;
844
struct scsi_device *device;
850
} device_config_needed = NOTHING;
852
/* Sniff for container changes */
854
if (!dev || !dev->fsa_dev)
856
container = channel = id = lun = (u32)-1;
859
* We have set this up to try and minimize the number of
860
* re-configures that take place. As a result of this when
861
* certain AIF's come in we will set a flag waiting for another
862
* type of AIF before setting the re-config flag.
864
switch (le32_to_cpu(aifcmd->command)) {
865
case AifCmdDriverNotify:
866
switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
868
* Morph or Expand complete
870
case AifDenMorphComplete:
871
case AifDenVolumeExtendComplete:
872
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
873
if (container >= dev->maximum_num_containers)
877
* Find the scsi_device associated with the SCSI
878
* address. Make sure we have the right array, and if
879
* so set the flag to initiate a new re-config once we
880
* see an AifEnConfigChange AIF come through.
883
if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) {
884
device = scsi_device_lookup(dev->scsi_host_ptr,
885
CONTAINER_TO_CHANNEL(container),
886
CONTAINER_TO_ID(container),
887
CONTAINER_TO_LUN(container));
889
dev->fsa_dev[container].config_needed = CHANGE;
890
dev->fsa_dev[container].config_waiting_on = AifEnConfigChange;
891
dev->fsa_dev[container].config_waiting_stamp = jiffies;
892
scsi_device_put(device);
898
* If we are waiting on something and this happens to be
899
* that thing then set the re-configure flag.
901
if (container != (u32)-1) {
902
if (container >= dev->maximum_num_containers)
904
if ((dev->fsa_dev[container].config_waiting_on ==
905
le32_to_cpu(*(__le32 *)aifcmd->data)) &&
906
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
907
dev->fsa_dev[container].config_waiting_on = 0;
908
} else for (container = 0;
909
container < dev->maximum_num_containers; ++container) {
910
if ((dev->fsa_dev[container].config_waiting_on ==
911
le32_to_cpu(*(__le32 *)aifcmd->data)) &&
912
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
913
dev->fsa_dev[container].config_waiting_on = 0;
917
case AifCmdEventNotify:
918
switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
919
case AifEnBatteryEvent:
920
dev->cache_protected =
921
(((__le32 *)aifcmd->data)[1] == cpu_to_le32(3));
926
case AifEnAddContainer:
927
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
928
if (container >= dev->maximum_num_containers)
930
dev->fsa_dev[container].config_needed = ADD;
931
dev->fsa_dev[container].config_waiting_on =
933
dev->fsa_dev[container].config_waiting_stamp = jiffies;
939
case AifEnDeleteContainer:
940
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
941
if (container >= dev->maximum_num_containers)
943
dev->fsa_dev[container].config_needed = DELETE;
944
dev->fsa_dev[container].config_waiting_on =
946
dev->fsa_dev[container].config_waiting_stamp = jiffies;
950
* Container change detected. If we currently are not
951
* waiting on something else, setup to wait on a Config Change.
953
case AifEnContainerChange:
954
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
955
if (container >= dev->maximum_num_containers)
957
if (dev->fsa_dev[container].config_waiting_on &&
958
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
960
dev->fsa_dev[container].config_needed = CHANGE;
961
dev->fsa_dev[container].config_waiting_on =
963
dev->fsa_dev[container].config_waiting_stamp = jiffies;
966
case AifEnConfigChange:
970
case AifEnDeleteJBOD:
971
container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
972
if ((container >> 28)) {
976
channel = (container >> 24) & 0xF;
977
if (channel >= dev->maximum_num_channels) {
981
id = container & 0xFFFF;
982
if (id >= dev->maximum_num_physicals) {
986
lun = (container >> 16) & 0xFF;
988
channel = aac_phys_to_logical(channel);
989
device_config_needed =
990
(((__le32 *)aifcmd->data)[0] ==
991
cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE;
992
if (device_config_needed == ADD) {
993
device = scsi_device_lookup(dev->scsi_host_ptr,
998
scsi_remove_device(device);
999
scsi_device_put(device);
1004
case AifEnEnclosureManagement:
1006
* If in JBOD mode, automatic exposure of new
1007
* physical target to be suppressed until configured.
1011
switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) {
1012
case EM_DRIVE_INSERTION:
1013
case EM_DRIVE_REMOVAL:
1014
container = le32_to_cpu(
1015
((__le32 *)aifcmd->data)[2]);
1016
if ((container >> 28)) {
1017
container = (u32)-1;
1020
channel = (container >> 24) & 0xF;
1021
if (channel >= dev->maximum_num_channels) {
1022
container = (u32)-1;
1025
id = container & 0xFFFF;
1026
lun = (container >> 16) & 0xFF;
1027
container = (u32)-1;
1028
if (id >= dev->maximum_num_physicals) {
1029
/* legacy dev_t ? */
1030
if ((0x2000 <= id) || lun || channel ||
1031
((channel = (id >> 7) & 0x3F) >=
1032
dev->maximum_num_channels))
1034
lun = (id >> 4) & 7;
1037
channel = aac_phys_to_logical(channel);
1038
device_config_needed =
1039
(((__le32 *)aifcmd->data)[3]
1040
== cpu_to_le32(EM_DRIVE_INSERTION)) ?
1048
* If we are waiting on something and this happens to be
1049
* that thing then set the re-configure flag.
1051
if (container != (u32)-1) {
1052
if (container >= dev->maximum_num_containers)
1054
if ((dev->fsa_dev[container].config_waiting_on ==
1055
le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1056
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1057
dev->fsa_dev[container].config_waiting_on = 0;
1058
} else for (container = 0;
1059
container < dev->maximum_num_containers; ++container) {
1060
if ((dev->fsa_dev[container].config_waiting_on ==
1061
le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1062
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1063
dev->fsa_dev[container].config_waiting_on = 0;
1067
case AifCmdJobProgress:
1069
* These are job progress AIF's. When a Clear is being
1070
* done on a container it is initially created then hidden from
1071
* the OS. When the clear completes we don't get a config
1072
* change so we monitor the job status complete on a clear then
1073
* wait for a container change.
1076
if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
1077
(((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] ||
1078
((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) {
1080
container < dev->maximum_num_containers;
1083
* Stomp on all config sequencing for all
1086
dev->fsa_dev[container].config_waiting_on =
1087
AifEnContainerChange;
1088
dev->fsa_dev[container].config_needed = ADD;
1089
dev->fsa_dev[container].config_waiting_stamp =
1093
if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
1094
((__le32 *)aifcmd->data)[6] == 0 &&
1095
((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) {
1097
container < dev->maximum_num_containers;
1100
* Stomp on all config sequencing for all
1103
dev->fsa_dev[container].config_waiting_on =
1104
AifEnContainerChange;
1105
dev->fsa_dev[container].config_needed = DELETE;
1106
dev->fsa_dev[container].config_waiting_stamp =
1115
if (device_config_needed == NOTHING)
1116
for (; container < dev->maximum_num_containers; ++container) {
1117
if ((dev->fsa_dev[container].config_waiting_on == 0) &&
1118
(dev->fsa_dev[container].config_needed != NOTHING) &&
1119
time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) {
1120
device_config_needed =
1121
dev->fsa_dev[container].config_needed;
1122
dev->fsa_dev[container].config_needed = NOTHING;
1123
channel = CONTAINER_TO_CHANNEL(container);
1124
id = CONTAINER_TO_ID(container);
1125
lun = CONTAINER_TO_LUN(container);
1129
if (device_config_needed == NOTHING)
1133
* If we decided that a re-configuration needs to be done,
1134
* schedule it here on the way out the door, please close the door
1139
* Find the scsi_device associated with the SCSI address,
1140
* and mark it as changed, invalidating the cache. This deals
1141
* with changes to existing device IDs.
1144
if (!dev || !dev->scsi_host_ptr)
1147
* force reload of disk info via aac_probe_container
1149
if ((channel == CONTAINER_CHANNEL) &&
1150
(device_config_needed != NOTHING)) {
1151
if (dev->fsa_dev[container].valid == 1)
1152
dev->fsa_dev[container].valid = 2;
1153
aac_probe_container(dev, container);
1155
device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun);
1157
switch (device_config_needed) {
1159
#if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1160
scsi_remove_device(device);
1162
if (scsi_device_online(device)) {
1163
scsi_device_set_state(device, SDEV_OFFLINE);
1164
sdev_printk(KERN_INFO, device,
1165
"Device offlined - %s\n",
1166
(channel == CONTAINER_CHANNEL) ?
1168
"enclosure services event");
1173
if (!scsi_device_online(device)) {
1174
sdev_printk(KERN_INFO, device,
1175
"Device online - %s\n",
1176
(channel == CONTAINER_CHANNEL) ?
1178
"enclosure services event");
1179
scsi_device_set_state(device, SDEV_RUNNING);
1183
if ((channel == CONTAINER_CHANNEL)
1184
&& (!dev->fsa_dev[container].valid)) {
1185
#if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1186
scsi_remove_device(device);
1188
if (!scsi_device_online(device))
1190
scsi_device_set_state(device, SDEV_OFFLINE);
1191
sdev_printk(KERN_INFO, device,
1192
"Device offlined - %s\n",
1197
scsi_rescan_device(&device->sdev_gendev);
1202
scsi_device_put(device);
1203
device_config_needed = NOTHING;
1205
if (device_config_needed == ADD)
1206
scsi_add_device(dev->scsi_host_ptr, channel, id, lun);
1207
if (channel == CONTAINER_CHANNEL) {
1209
device_config_needed = NOTHING;
1214
static int _aac_reset_adapter(struct aac_dev *aac, int forced)
1218
struct Scsi_Host *host;
1219
struct scsi_device *dev;
1220
struct scsi_cmnd *command;
1221
struct scsi_cmnd *command_list;
1226
* - host is locked, unless called by the aacraid thread.
1227
* (a matter of convenience, due to legacy issues surrounding
1228
* eh_host_adapter_reset).
1229
* - in_reset is asserted, so no new i/o is getting to the
1231
* - The card is dead, or will be very shortly ;-/ so no new
1232
* commands are completing in the interrupt service.
1234
host = aac->scsi_host_ptr;
1235
scsi_block_requests(host);
1236
aac_adapter_disable_int(aac);
1237
if (aac->thread->pid != current->pid) {
1238
spin_unlock_irq(host->host_lock);
1239
kthread_stop(aac->thread);
1244
* If a positive health, means in a known DEAD PANIC
1245
* state and the adapter could be reset to `try again'.
1247
retval = aac_adapter_restart(aac, forced ? 0 : aac_adapter_check_health(aac));
1253
* Loop through the fibs, close the synchronous FIBS
1255
for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) {
1256
struct fib *fib = &aac->fibs[index];
1257
if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) &&
1258
(fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) {
1259
unsigned long flagv;
1260
spin_lock_irqsave(&fib->event_lock, flagv);
1261
up(&fib->event_wait);
1262
spin_unlock_irqrestore(&fib->event_lock, flagv);
1267
/* Give some extra time for ioctls to complete. */
1270
index = aac->cardtype;
1273
* Re-initialize the adapter, first free resources, then carefully
1274
* apply the initialization sequence to come back again. Only risk
1275
* is a change in Firmware dropping cache, it is assumed the caller
1276
* will ensure that i/o is queisced and the card is flushed in that
1279
aac_fib_map_free(aac);
1280
pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys);
1281
aac->comm_addr = NULL;
1285
free_irq(aac->pdev->irq, aac);
1287
pci_disable_msi(aac->pdev);
1288
kfree(aac->fsa_dev);
1289
aac->fsa_dev = NULL;
1290
quirks = aac_get_driver_ident(index)->quirks;
1291
if (quirks & AAC_QUIRK_31BIT) {
1292
if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(31)))) ||
1293
((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(31)))))
1296
if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32)))) ||
1297
((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(32)))))
1300
if ((retval = (*(aac_get_driver_ident(index)->init))(aac)))
1302
if (quirks & AAC_QUIRK_31BIT)
1303
if ((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32))))
1306
aac->thread = kthread_run(aac_command_thread, aac, aac->name);
1307
if (IS_ERR(aac->thread)) {
1308
retval = PTR_ERR(aac->thread);
1312
(void)aac_get_adapter_info(aac);
1313
if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) {
1314
host->sg_tablesize = 34;
1315
host->max_sectors = (host->sg_tablesize * 8) + 112;
1317
if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
1318
host->sg_tablesize = 17;
1319
host->max_sectors = (host->sg_tablesize * 8) + 112;
1321
aac_get_config_status(aac, 1);
1322
aac_get_containers(aac);
1324
* This is where the assumption that the Adapter is quiesced
1327
command_list = NULL;
1328
__shost_for_each_device(dev, host) {
1329
unsigned long flags;
1330
spin_lock_irqsave(&dev->list_lock, flags);
1331
list_for_each_entry(command, &dev->cmd_list, list)
1332
if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
1333
command->SCp.buffer = (struct scatterlist *)command_list;
1334
command_list = command;
1336
spin_unlock_irqrestore(&dev->list_lock, flags);
1338
while ((command = command_list)) {
1339
command_list = (struct scsi_cmnd *)command->SCp.buffer;
1340
command->SCp.buffer = NULL;
1341
command->result = DID_OK << 16
1342
| COMMAND_COMPLETE << 8
1343
| SAM_STAT_TASK_SET_FULL;
1344
command->SCp.phase = AAC_OWNER_ERROR_HANDLER;
1345
command->scsi_done(command);
1351
scsi_unblock_requests(host);
1353
spin_lock_irq(host->host_lock);
1358
int aac_reset_adapter(struct aac_dev * aac, int forced)
1360
unsigned long flagv = 0;
1362
struct Scsi_Host * host;
1364
if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1367
if (aac->in_reset) {
1368
spin_unlock_irqrestore(&aac->fib_lock, flagv);
1372
spin_unlock_irqrestore(&aac->fib_lock, flagv);
1375
* Wait for all commands to complete to this specific
1376
* target (block maximum 60 seconds). Although not necessary,
1377
* it does make us a good storage citizen.
1379
host = aac->scsi_host_ptr;
1380
scsi_block_requests(host);
1381
if (forced < 2) for (retval = 60; retval; --retval) {
1382
struct scsi_device * dev;
1383
struct scsi_cmnd * command;
1386
__shost_for_each_device(dev, host) {
1387
spin_lock_irqsave(&dev->list_lock, flagv);
1388
list_for_each_entry(command, &dev->cmd_list, list) {
1389
if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
1394
spin_unlock_irqrestore(&dev->list_lock, flagv);
1400
* We can exit If all the commands are complete
1407
/* Quiesce build, flush cache, write through mode */
1409
aac_send_shutdown(aac);
1410
spin_lock_irqsave(host->host_lock, flagv);
1411
retval = _aac_reset_adapter(aac, forced ? forced : ((aac_check_reset != 0) && (aac_check_reset != 1)));
1412
spin_unlock_irqrestore(host->host_lock, flagv);
1414
if ((forced < 2) && (retval == -ENODEV)) {
1415
/* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */
1416
struct fib * fibctx = aac_fib_alloc(aac);
1418
struct aac_pause *cmd;
1421
aac_fib_init(fibctx);
1423
cmd = (struct aac_pause *) fib_data(fibctx);
1425
cmd->command = cpu_to_le32(VM_ContainerConfig);
1426
cmd->type = cpu_to_le32(CT_PAUSE_IO);
1427
cmd->timeout = cpu_to_le32(1);
1428
cmd->min = cpu_to_le32(1);
1429
cmd->noRescan = cpu_to_le32(1);
1430
cmd->count = cpu_to_le32(0);
1432
status = aac_fib_send(ContainerCommand,
1434
sizeof(struct aac_pause),
1436
-2 /* Timeout silently */, 1,
1440
aac_fib_complete(fibctx);
1441
/* FIB should be freed only after getting
1442
* the response from the F/W */
1443
if (status != -ERESTARTSYS)
1444
aac_fib_free(fibctx);
1451
int aac_check_health(struct aac_dev * aac)
1454
unsigned long time_now, flagv = 0;
1455
struct list_head * entry;
1456
struct Scsi_Host * host;
1458
/* Extending the scope of fib_lock slightly to protect aac->in_reset */
1459
if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1462
if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) {
1463
spin_unlock_irqrestore(&aac->fib_lock, flagv);
1470
* aac_aifcmd.command = AifCmdEventNotify = 1
1471
* aac_aifcmd.seqnum = 0xFFFFFFFF
1472
* aac_aifcmd.data[0] = AifEnExpEvent = 23
1473
* aac_aifcmd.data[1] = AifExeFirmwarePanic = 3
1474
* aac.aifcmd.data[2] = AifHighPriority = 3
1475
* aac.aifcmd.data[3] = BlinkLED
1478
time_now = jiffies/HZ;
1479
entry = aac->fib_list.next;
1482
* For each Context that is on the
1483
* fibctxList, make a copy of the
1484
* fib, and then set the event to wake up the
1485
* thread that is waiting for it.
1487
while (entry != &aac->fib_list) {
1489
* Extract the fibctx
1491
struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next);
1492
struct hw_fib * hw_fib;
1495
* Check if the queue is getting
1498
if (fibctx->count > 20) {
1500
* It's *not* jiffies folks,
1501
* but jiffies / HZ, so do not
1504
u32 time_last = fibctx->jiffies;
1506
* Has it been > 2 minutes
1507
* since the last read off
1510
if ((time_now - time_last) > aif_timeout) {
1511
entry = entry->next;
1512
aac_close_fib_context(aac, fibctx);
1517
* Warning: no sleep allowed while
1520
hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC);
1521
fib = kzalloc(sizeof(struct fib), GFP_ATOMIC);
1522
if (fib && hw_fib) {
1523
struct aac_aifcmd * aif;
1525
fib->hw_fib_va = hw_fib;
1528
fib->type = FSAFS_NTC_FIB_CONTEXT;
1529
fib->size = sizeof (struct fib);
1530
fib->data = hw_fib->data;
1531
aif = (struct aac_aifcmd *)hw_fib->data;
1532
aif->command = cpu_to_le32(AifCmdEventNotify);
1533
aif->seqnum = cpu_to_le32(0xFFFFFFFF);
1534
((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent);
1535
((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic);
1536
((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority);
1537
((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED);
1540
* Put the FIB onto the
1543
list_add_tail(&fib->fiblink, &fibctx->fib_list);
1546
* Set the event to wake up the
1547
* thread that will waiting.
1549
up(&fibctx->wait_sem);
1551
printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
1555
entry = entry->next;
1558
spin_unlock_irqrestore(&aac->fib_lock, flagv);
1561
printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED);
1565
printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
1567
if (!aac_check_reset || ((aac_check_reset == 1) &&
1568
(aac->supplement_adapter_info.SupportedOptions2 &
1569
AAC_OPTION_IGNORE_RESET)))
1571
host = aac->scsi_host_ptr;
1572
if (aac->thread->pid != current->pid)
1573
spin_lock_irqsave(host->host_lock, flagv);
1574
BlinkLED = _aac_reset_adapter(aac, aac_check_reset != 1);
1575
if (aac->thread->pid != current->pid)
1576
spin_unlock_irqrestore(host->host_lock, flagv);
1586
* aac_command_thread - command processing thread
1587
* @dev: Adapter to monitor
1589
* Waits on the commandready event in it's queue. When the event gets set
1590
* it will pull FIBs off it's queue. It will continue to pull FIBs off
1591
* until the queue is empty. When the queue is empty it will wait for
1595
int aac_command_thread(void *data)
1597
struct aac_dev *dev = data;
1598
struct hw_fib *hw_fib, *hw_newfib;
1599
struct fib *fib, *newfib;
1600
struct aac_fib_context *fibctx;
1601
unsigned long flags;
1602
DECLARE_WAITQUEUE(wait, current);
1603
unsigned long next_jiffies = jiffies + HZ;
1604
unsigned long next_check_jiffies = next_jiffies;
1605
long difference = HZ;
1608
* We can only have one thread per adapter for AIF's.
1610
if (dev->aif_thread)
1614
* Let the DPC know it has a place to send the AIF's to.
1616
dev->aif_thread = 1;
1617
add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
1618
set_current_state(TASK_INTERRUPTIBLE);
1619
dprintk ((KERN_INFO "aac_command_thread start\n"));
1621
spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
1622
while(!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) {
1623
struct list_head *entry;
1624
struct aac_aifcmd * aifcmd;
1626
set_current_state(TASK_RUNNING);
1628
entry = dev->queues->queue[HostNormCmdQueue].cmdq.next;
1631
spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
1632
fib = list_entry(entry, struct fib, fiblink);
1634
* We will process the FIB here or pass it to a
1635
* worker thread that is TBD. We Really can't
1636
* do anything at this point since we don't have
1637
* anything defined for this thread to do.
1639
hw_fib = fib->hw_fib_va;
1640
memset(fib, 0, sizeof(struct fib));
1641
fib->type = FSAFS_NTC_FIB_CONTEXT;
1642
fib->size = sizeof(struct fib);
1643
fib->hw_fib_va = hw_fib;
1644
fib->data = hw_fib->data;
1647
* We only handle AifRequest fibs from the adapter.
1649
aifcmd = (struct aac_aifcmd *) hw_fib->data;
1650
if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) {
1651
/* Handle Driver Notify Events */
1652
aac_handle_aif(dev, fib);
1653
*(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
1654
aac_fib_adapter_complete(fib, (u16)sizeof(u32));
1656
/* The u32 here is important and intended. We are using
1657
32bit wrapping time to fit the adapter field */
1659
u32 time_now, time_last;
1660
unsigned long flagv;
1662
struct hw_fib ** hw_fib_pool, ** hw_fib_p;
1663
struct fib ** fib_pool, ** fib_p;
1666
if ((aifcmd->command ==
1667
cpu_to_le32(AifCmdEventNotify)) ||
1669
cpu_to_le32(AifCmdJobProgress))) {
1670
aac_handle_aif(dev, fib);
1673
time_now = jiffies/HZ;
1676
* Warning: no sleep allowed while
1677
* holding spinlock. We take the estimate
1678
* and pre-allocate a set of fibs outside the
1681
num = le32_to_cpu(dev->init->AdapterFibsSize)
1682
/ sizeof(struct hw_fib); /* some extra */
1683
spin_lock_irqsave(&dev->fib_lock, flagv);
1684
entry = dev->fib_list.next;
1685
while (entry != &dev->fib_list) {
1686
entry = entry->next;
1689
spin_unlock_irqrestore(&dev->fib_lock, flagv);
1693
&& ((hw_fib_pool = kmalloc(sizeof(struct hw_fib *) * num, GFP_KERNEL)))
1694
&& ((fib_pool = kmalloc(sizeof(struct fib *) * num, GFP_KERNEL)))) {
1695
hw_fib_p = hw_fib_pool;
1697
while (hw_fib_p < &hw_fib_pool[num]) {
1698
if (!(*(hw_fib_p++) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL))) {
1702
if (!(*(fib_p++) = kmalloc(sizeof(struct fib), GFP_KERNEL))) {
1703
kfree(*(--hw_fib_p));
1707
if ((num = hw_fib_p - hw_fib_pool) == 0) {
1717
spin_lock_irqsave(&dev->fib_lock, flagv);
1718
entry = dev->fib_list.next;
1720
* For each Context that is on the
1721
* fibctxList, make a copy of the
1722
* fib, and then set the event to wake up the
1723
* thread that is waiting for it.
1725
hw_fib_p = hw_fib_pool;
1727
while (entry != &dev->fib_list) {
1729
* Extract the fibctx
1731
fibctx = list_entry(entry, struct aac_fib_context, next);
1733
* Check if the queue is getting
1736
if (fibctx->count > 20)
1739
* It's *not* jiffies folks,
1740
* but jiffies / HZ so do not
1743
time_last = fibctx->jiffies;
1745
* Has it been > 2 minutes
1746
* since the last read off
1749
if ((time_now - time_last) > aif_timeout) {
1750
entry = entry->next;
1751
aac_close_fib_context(dev, fibctx);
1756
* Warning: no sleep allowed while
1759
if (hw_fib_p < &hw_fib_pool[num]) {
1760
hw_newfib = *hw_fib_p;
1761
*(hw_fib_p++) = NULL;
1765
* Make the copy of the FIB
1767
memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib));
1768
memcpy(newfib, fib, sizeof(struct fib));
1769
newfib->hw_fib_va = hw_newfib;
1771
* Put the FIB onto the
1774
list_add_tail(&newfib->fiblink, &fibctx->fib_list);
1777
* Set the event to wake up the
1778
* thread that is waiting.
1780
up(&fibctx->wait_sem);
1782
printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
1784
entry = entry->next;
1787
* Set the status of this FIB
1789
*(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
1790
aac_fib_adapter_complete(fib, sizeof(u32));
1791
spin_unlock_irqrestore(&dev->fib_lock, flagv);
1792
/* Free up the remaining resources */
1793
hw_fib_p = hw_fib_pool;
1795
while (hw_fib_p < &hw_fib_pool[num]) {
1805
spin_lock_irqsave(dev->queues->queue[HostNormCmdQueue].lock, flags);
1808
* There are no more AIF's
1810
spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
1813
* Background activity
1815
if ((time_before(next_check_jiffies,next_jiffies))
1816
&& ((difference = next_check_jiffies - jiffies) <= 0)) {
1817
next_check_jiffies = next_jiffies;
1818
if (aac_check_health(dev) == 0) {
1819
difference = ((long)(unsigned)check_interval)
1821
next_check_jiffies = jiffies + difference;
1822
} else if (!dev->queues)
1825
if (!time_before(next_check_jiffies,next_jiffies)
1826
&& ((difference = next_jiffies - jiffies) <= 0)) {
1830
/* Don't even try to talk to adapter if its sick */
1831
ret = aac_check_health(dev);
1832
if (!ret && !dev->queues)
1834
next_check_jiffies = jiffies
1835
+ ((long)(unsigned)check_interval)
1837
do_gettimeofday(&now);
1839
/* Synchronize our watches */
1840
if (((1000000 - (1000000 / HZ)) > now.tv_usec)
1841
&& (now.tv_usec > (1000000 / HZ)))
1842
difference = (((1000000 - now.tv_usec) * HZ)
1843
+ 500000) / 1000000;
1844
else if (ret == 0) {
1847
if ((fibptr = aac_fib_alloc(dev))) {
1851
aac_fib_init(fibptr);
1853
info = (__le32 *) fib_data(fibptr);
1854
if (now.tv_usec > 500000)
1857
*info = cpu_to_le32(now.tv_sec);
1859
status = aac_fib_send(SendHostTime,
1866
/* Do not set XferState to zero unless
1867
* receives a response from F/W */
1869
aac_fib_complete(fibptr);
1870
/* FIB should be freed only after
1871
* getting the response from the F/W */
1872
if (status != -ERESTARTSYS)
1873
aac_fib_free(fibptr);
1875
difference = (long)(unsigned)update_interval*HZ;
1878
difference = 10 * HZ;
1880
next_jiffies = jiffies + difference;
1881
if (time_before(next_check_jiffies,next_jiffies))
1882
difference = next_check_jiffies - jiffies;
1884
if (difference <= 0)
1886
set_current_state(TASK_INTERRUPTIBLE);
1887
schedule_timeout(difference);
1889
if (kthread_should_stop())
1893
remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
1894
dev->aif_thread = 0;