[SCSI] aacraid: Add new code for PMC-Sierra's SRC based controller family

Added new hardware device 0x28b interface for PMC-Sierra's SRC based
controller family.

- new src.c file for 0x28b specific functions
- new XPORT header required
- sync. command interface: doorbell bits shifted (SRC_ODR_SHIFT, SRC_IDR_SHIFT)
- async. Interface: different inbound queue handling, no outbound I2O
  queue available, using doorbell ("PmDoorBellResponseSent") and
  response buffer on the host ("host_rrq") for status
- changed AIF (adapter initiated FIBs) interface: "DoorBellAifPending"
  bit to inform about pending AIF, "AifRequest" command to read AIF,
  "NoMoreAifDataAvailable" to mark the end of the AIFs

Signed-off-by: Mahesh Rajashekhara <aacraid@pmc-sierra.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 32 insertions, 9 deletions

diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index 060ac4bd5a14..dd7ad3ba2dad 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -5,7 +5,8 @@
  * based on the old aacraid driver that is..
  * Adaptec aacraid device driver for Linux.
  *
- * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
+ * Copyright (c) 2000-2010 Adaptec, Inc.
+ *               2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.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
@@ -63,9 +64,11 @@ static int fib_map_alloc(struct aac_dev *dev)
           "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n",
           dev->pdev, dev->max_fib_size, dev->scsi_host_ptr->can_queue,
           AAC_NUM_MGT_FIB, &dev->hw_fib_pa));
-        if((dev->hw_fib_va = pci_alloc_consistent(dev->pdev, dev->max_fib_size
-          * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB),
-          &dev->hw_fib_pa))==NULL)
+        dev->hw_fib_va = pci_alloc_consistent(dev->pdev,
+                (dev->max_fib_size + sizeof(struct aac_fib_xporthdr))
+                * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1),
+                &dev->hw_fib_pa);
+        if (dev->hw_fib_va == NULL)
                 return -ENOMEM;
         return 0;
 }
@@ -110,9 +113,22 @@ int aac_fib_setup(struct aac_dev * dev)
         if (i<0)
                 return -ENOMEM;
 
+        /* 32 byte alignment for PMC */
+        hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1);
+        dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
+                (hw_fib_pa - dev->hw_fib_pa));
+        dev->hw_fib_pa = hw_fib_pa;
+        memset(dev->hw_fib_va, 0,
+                (dev->max_fib_size + sizeof(struct aac_fib_xporthdr)) *
+                (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
+
+        /* add Xport header */
+        dev->hw_fib_va = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
+                sizeof(struct aac_fib_xporthdr));
+        dev->hw_fib_pa += sizeof(struct aac_fib_xporthdr);
+
         hw_fib = dev->hw_fib_va;
         hw_fib_pa = dev->hw_fib_pa;
-        memset(hw_fib, 0, dev->max_fib_size * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
         /*
          *      Initialise the fibs
          */
@@ -129,8 +145,10 @@ int aac_fib_setup(struct aac_dev * dev)
                 hw_fib->header.XferState = cpu_to_le32(0xffffffff);
                 hw_fib->header.SenderSize = cpu_to_le16(dev->max_fib_size);
                 fibptr->hw_fib_pa = hw_fib_pa;
-                hw_fib = (struct hw_fib *)((unsigned char *)hw_fib + dev->max_fib_size);
-                hw_fib_pa = hw_fib_pa + dev->max_fib_size;
+                hw_fib = (struct hw_fib *)((unsigned char *)hw_fib +
+                        dev->max_fib_size + sizeof(struct aac_fib_xporthdr));
+                hw_fib_pa = hw_fib_pa +
+                        dev->max_fib_size + sizeof(struct aac_fib_xporthdr);
         }
         /*
          *      Add the fib chain to the free list
@@ -664,9 +682,14 @@ int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
         unsigned long nointr = 0;
         unsigned long qflags;
 
+        if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
+                kfree(hw_fib);
+                return 0;
+        }
+
         if (hw_fib->header.XferState == 0) {
                 if (dev->comm_interface == AAC_COMM_MESSAGE)
-                        kfree (hw_fib);
+                        kfree(hw_fib);
                 return 0;
         }
         /*
@@ -674,7 +697,7 @@ int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
          */
         if (hw_fib->header.StructType != FIB_MAGIC) {
                 if (dev->comm_interface == AAC_COMM_MESSAGE)
-                        kfree (hw_fib);
+                        kfree(hw_fib);
                 return -EINVAL;
         }
         /*