[SCSI] aacraid: Newer adapter communication iterface support
Received from Mark Salyzyn.
This patch adds the 'new comm' interface, which modern AAC based
adapters that are less than a year old support in the name of much
improved performance. These modern adapters support both the legacy and
the 'new comm' interfaces.
Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/aacraid/dpcsup.c b/drivers/scsi/aacraid/dpcsup.c
index be2e98d..439948e 100644
--- a/drivers/scsi/aacraid/dpcsup.c
+++ b/drivers/scsi/aacraid/dpcsup.c
@@ -73,7 +73,7 @@
int fast;
u32 index = le32_to_cpu(entry->addr);
fast = index & 0x01;
- fib = &dev->fibs[index >> 1];
+ fib = &dev->fibs[index >> 2];
hwfib = fib->hw_fib;
aac_consumer_free(dev, q, HostNormRespQueue);
@@ -213,3 +213,116 @@
spin_unlock_irqrestore(q->lock, flags);
return 0;
}
+
+
+/**
+ * aac_intr_normal - Handle command replies
+ * @dev: Device
+ * @index: completion reference
+ *
+ * This DPC routine will be run when the adapter interrupts us to let us
+ * know there is a response on our normal priority queue. We will pull off
+ * all QE there are and wake up all the waiters before exiting.
+ */
+
+unsigned int aac_intr_normal(struct aac_dev * dev, u32 Index)
+{
+ u32 index = le32_to_cpu(Index);
+
+ dprintk((KERN_INFO "aac_intr_normal(%p,%x)\n", dev, Index));
+ if ((index & 0x00000002L)) {
+ struct hw_fib * hw_fib;
+ struct fib * fib;
+ struct aac_queue *q = &dev->queues->queue[HostNormCmdQueue];
+ unsigned long flags;
+
+ if (index == 0xFFFFFFFEL) /* Special Case */
+ return 0; /* Do nothing */
+ /*
+ * Allocate a FIB. For non queued stuff we can just use
+ * the stack so we are happy. We need a fib object in order to
+ * manage the linked lists.
+ */
+ if ((!dev->aif_thread)
+ || (!(fib = kmalloc(sizeof(struct fib),GFP_ATOMIC))))
+ return 1;
+ if (!(hw_fib = kmalloc(sizeof(struct hw_fib),GFP_ATOMIC))) {
+ kfree (fib);
+ return 1;
+ }
+ memset(hw_fib, 0, sizeof(struct hw_fib));
+ memcpy(hw_fib, (struct hw_fib *)(((unsigned long)(dev->regs.sa)) + (index & ~0x00000002L)), sizeof(struct hw_fib));
+ memset(fib, 0, sizeof(struct fib));
+ INIT_LIST_HEAD(&fib->fiblink);
+ fib->type = FSAFS_NTC_FIB_CONTEXT;
+ fib->size = sizeof(struct fib);
+ fib->hw_fib = hw_fib;
+ fib->data = hw_fib->data;
+ fib->dev = dev;
+
+ spin_lock_irqsave(q->lock, flags);
+ list_add_tail(&fib->fiblink, &q->cmdq);
+ wake_up_interruptible(&q->cmdready);
+ spin_unlock_irqrestore(q->lock, flags);
+ return 1;
+ } else {
+ int fast = index & 0x01;
+ struct fib * fib = &dev->fibs[index >> 2];
+ struct hw_fib * hwfib = fib->hw_fib;
+
+ /*
+ * Remove this fib from the Outstanding I/O queue.
+ * But only if it has not already been timed out.
+ *
+ * If the fib has been timed out already, then just
+ * continue. The caller has already been notified that
+ * the fib timed out.
+ */
+ if ((fib->flags & FIB_CONTEXT_FLAG_TIMED_OUT)) {
+ printk(KERN_WARNING "aacraid: FIB timeout (%x).\n", fib->flags);
+ printk(KERN_DEBUG"aacraid: hwfib=%p index=%i fib=%p\n",hwfib, hwfib->header.SenderData,fib);
+ return 0;
+ }
+
+ list_del(&fib->queue);
+ dev->queues->queue[AdapNormCmdQueue].numpending--;
+
+ if (fast) {
+ /*
+ * Doctor the fib
+ */
+ *(__le32 *)hwfib->data = cpu_to_le32(ST_OK);
+ hwfib->header.XferState |= cpu_to_le32(AdapterProcessed);
+ }
+
+ FIB_COUNTER_INCREMENT(aac_config.FibRecved);
+
+ if (hwfib->header.Command == cpu_to_le16(NuFileSystem))
+ {
+ u32 *pstatus = (u32 *)hwfib->data;
+ if (*pstatus & cpu_to_le32(0xffff0000))
+ *pstatus = cpu_to_le32(ST_OK);
+ }
+ if (hwfib->header.XferState & cpu_to_le32(NoResponseExpected | Async))
+ {
+ if (hwfib->header.XferState & cpu_to_le32(NoResponseExpected))
+ FIB_COUNTER_INCREMENT(aac_config.NoResponseRecved);
+ else
+ FIB_COUNTER_INCREMENT(aac_config.AsyncRecved);
+ /*
+ * NOTE: we cannot touch the fib after this
+ * call, because it may have been deallocated.
+ */
+ fib->callback(fib->callback_data, fib);
+ } else {
+ unsigned long flagv;
+ dprintk((KERN_INFO "event_wait up\n"));
+ spin_lock_irqsave(&fib->event_lock, flagv);
+ fib->done = 1;
+ up(&fib->event_wait);
+ spin_unlock_irqrestore(&fib->event_lock, flagv);
+ FIB_COUNTER_INCREMENT(aac_config.NormalRecved);
+ }
+ return 0;
+ }
+}