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[SCSI] aacraid: Added Sync.mode to support series 7/8/9 controllers

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Added Sync. mode to support Series 7/8/9 controller families: This is a
compatibility mode for all these controller families. The Async. (Performance)
mode can be changed in the future.  First Async. mode version added for Series
7; Controller parameter aac_sync_mode added

Signed-off-by: Mahesh Rajashekhara <aacraid@pmc-sierra.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Mahesh Rajashekhara
2012-02-08 22:51:04 -08:00
committed by James Bottomley
parent 70fc872c73
commit 116046127d
8 changed files with 342 additions and 67 deletions
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26
drivers/scsi/aacraid/commsup.c
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@@ -416,6 +416,7 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
unsigned long flags = 0;
unsigned long qflags;
unsigned long mflags = 0;
unsigned long sflags = 0;
if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
@@ -512,6 +513,31 @@ int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
spin_lock_irqsave(&fibptr->event_lock, flags);
}
if (dev->sync_mode) {
if (wait)
spin_unlock_irqrestore(&fibptr->event_lock, flags);
spin_lock_irqsave(&dev->sync_lock, sflags);
if (dev->sync_fib) {
list_add_tail(&fibptr->fiblink, &dev->sync_fib_list);
spin_unlock_irqrestore(&dev->sync_lock, sflags);
} else {
dev->sync_fib = fibptr;
spin_unlock_irqrestore(&dev->sync_lock, sflags);
aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB,
(u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0,
NULL, NULL, NULL, NULL, NULL);
}
if (wait) {
fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
if (down_interruptible(&fibptr->event_wait)) {
fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT;
return -EFAULT;
}
return 0;
}
return -EINPROGRESS;
}
if (aac_adapter_deliver(fibptr) != 0) {
printk(KERN_ERR "aac_fib_send: returned -EBUSY\n");
if (wait) {