Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 215 insertions, 0 deletions

diff --git a/drivers/scsi/aacraid/dpcsup.c b/drivers/scsi/aacraid/dpcsup.c
new file mode 100644
index 000000000000..8480b427a6d9
--- /dev/null
+++ b/drivers/scsi/aacraid/dpcsup.c
@@ -0,0 +1,215 @@
+/*
+ *      Adaptec AAC series RAID controller driver
+ *      (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
+ *
+ * based on the old aacraid driver that is..
+ * Adaptec aacraid device driver for Linux.
+ *
+ * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Module Name:
+ *  dpcsup.c
+ *
+ * Abstract: All DPC processing routines for the cyclone board occur here.
+ *
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/completion.h>
+#include <linux/blkdev.h>
+#include <asm/semaphore.h>
+
+#include "aacraid.h"
+
+/**
+ *      aac_response_normal     -       Handle command replies
+ *      @q: Queue to read from
+ *
+ *      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. We will
+ *      take a spinlock out on the queue before operating on it.
+ */
+
+unsigned int aac_response_normal(struct aac_queue * q)
+{
+        struct aac_dev * dev = q->dev;
+        struct aac_entry *entry;
+        struct hw_fib * hwfib;
+        struct fib * fib;
+        int consumed = 0;
+        unsigned long flags;
+
+        spin_lock_irqsave(q->lock, flags);      
+        /*
+         *      Keep pulling response QEs off the response queue and waking
+         *      up the waiters until there are no more QEs. We then return
+         *      back to the system. If no response was requesed we just
+         *      deallocate the Fib here and continue.
+         */
+        while(aac_consumer_get(dev, q, &entry))
+        {
+                int fast;
+                u32 index = le32_to_cpu(entry->addr);
+                fast = index & 0x01;
+                fib = &dev->fibs[index >> 1];
+                hwfib = fib->hw_fib;
+                
+                aac_consumer_free(dev, q, HostNormRespQueue);
+                /*
+                 *      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)) {
+                        list_del(&fib->queue);
+                        dev->queues->queue[AdapNormCmdQueue].numpending--;
+                } else {
+                        printk(KERN_WARNING "aacraid: FIB timeout (%x).\n", fib->flags);
+                        printk(KERN_DEBUG"aacraid: hwfib=%p fib index=%i fib=%p\n",hwfib, hwfib->header.SenderData,fib);
+                        continue;
+                }
+                spin_unlock_irqrestore(q->lock, flags);
+
+                if (fast) {
+                        /*
+                         *      Doctor the fib
+                         */
+                        *(u32 *)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;
+                        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);
+                }
+                consumed++;
+                spin_lock_irqsave(q->lock, flags);
+        }
+
+        if (consumed > aac_config.peak_fibs)
+                aac_config.peak_fibs = consumed;
+        if (consumed == 0) 
+                aac_config.zero_fibs++;
+
+        spin_unlock_irqrestore(q->lock, flags);
+        return 0;
+}
+
+
+/**
+ *      aac_command_normal      -       handle commands
+ *      @q: queue to process
+ *
+ *      This DPC routine will be queued when the adapter interrupts us to 
+ *      let us know there is a command on our normal priority queue. We will 
+ *      pull off all QE there are and wake up all the waiters before exiting.
+ *      We will take a spinlock out on the queue before operating on it.
+ */
+ 
+unsigned int aac_command_normal(struct aac_queue *q)
+{
+        struct aac_dev * dev = q->dev;
+        struct aac_entry *entry;
+        unsigned long flags;
+
+        spin_lock_irqsave(q->lock, flags);
+
+        /*
+         *      Keep pulling response QEs off the response queue and waking
+         *      up the waiters until there are no more QEs. We then return
+         *      back to the system.
+         */
+        while(aac_consumer_get(dev, q, &entry))
+        {
+                struct fib fibctx;
+                struct hw_fib * hw_fib;
+                u32 index;
+                struct fib *fib = &fibctx;
+                
+                index = le32_to_cpu(entry->addr) / sizeof(struct hw_fib);
+                hw_fib = &dev->aif_base_va[index];
+                
+                /*
+                 *      Allocate a FIB at all costs. 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)
+                        if((fib = kmalloc(sizeof(struct fib), GFP_ATOMIC)) == NULL)
+                                fib = &fibctx;
+                
+                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;
+                
+                                
+                if (dev->aif_thread && fib != &fibctx) {
+                        list_add_tail(&fib->fiblink, &q->cmdq);
+                        aac_consumer_free(dev, q, HostNormCmdQueue);
+                        wake_up_interruptible(&q->cmdready);
+                } else {
+                        aac_consumer_free(dev, q, HostNormCmdQueue);
+                        spin_unlock_irqrestore(q->lock, flags);
+                        /*
+                         *      Set the status of this FIB
+                         */
+                        *(u32 *)hw_fib->data = cpu_to_le32(ST_OK);
+                        fib_adapter_complete(fib, sizeof(u32));
+                        spin_lock_irqsave(q->lock, flags);
+                }               
+        }
+        spin_unlock_irqrestore(q->lock, flags);
+        return 0;
+}