[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, 45 insertions, 13 deletions

diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index a7261486ccd4..7ac8fdb5577b 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.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
@@ -52,12 +53,16 @@ static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long co
         unsigned long size, align;
         const unsigned long fibsize = 4096;
         const unsigned long printfbufsiz = 256;
+        unsigned long host_rrq_size = 0;
         struct aac_init *init;
         dma_addr_t phys;
         unsigned long aac_max_hostphysmempages;
 
-        size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz;
-
+        if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1)
+                host_rrq_size = (dev->scsi_host_ptr->can_queue
+                        + AAC_NUM_MGT_FIB) * sizeof(u32);
+        size = fibsize + sizeof(struct aac_init) + commsize +
+                        commalign + printfbufsiz + host_rrq_size;
  
         base = pci_alloc_consistent(dev->pdev, size, &phys);
 
@@ -70,8 +75,14 @@ static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long co
         dev->comm_phys = phys;
         dev->comm_size = size;
         
-        dev->init = (struct aac_init *)(base + fibsize);
-        dev->init_pa = phys + fibsize;
+        if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
+                dev->host_rrq = (u32 *)(base + fibsize);
+                dev->host_rrq_pa = phys + fibsize;
+                memset(dev->host_rrq, 0, host_rrq_size);
+        }
+
+        dev->init = (struct aac_init *)(base + fibsize + host_rrq_size);
+        dev->init_pa = phys + fibsize + host_rrq_size;
 
         init = dev->init;
 
@@ -106,8 +117,13 @@ static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long co
 
         init->InitFlags = 0;
         if (dev->comm_interface == AAC_COMM_MESSAGE) {
-                init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
+                init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
                 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
+        } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
+                init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
+                init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_TYPE1_SUPPORTED);
+                dprintk((KERN_WARNING
+                        "aacraid: New Comm Interface type1 enabled\n"));
         }
         init->InitFlags |= cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
                                        INITFLAGS_DRIVER_SUPPORTS_PM);
@@ -115,11 +131,18 @@ static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long co
         init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
         init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
 
+        init->MaxNumAif = cpu_to_le32(dev->max_num_aif);
+        init->HostRRQ_AddrHigh = (u32)((u64)dev->host_rrq_pa >> 32);
+        init->HostRRQ_AddrLow = (u32)(dev->host_rrq_pa & 0xffffffff);
+
+
         /*
          * Increment the base address by the amount already used
          */
-        base = base + fibsize + sizeof(struct aac_init);
-        phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init));
+        base = base + fibsize + host_rrq_size + sizeof(struct aac_init);
+        phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
+                sizeof(struct aac_init));
+
         /*
          *      Align the beginning of Headers to commalign
          */
@@ -314,15 +337,22 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
                 - sizeof(struct aac_write) + sizeof(struct sgentry))
                         / sizeof(struct sgentry);
         dev->comm_interface = AAC_COMM_PRODUCER;
-        dev->raw_io_64 = 0;
+        dev->raw_io_interface = dev->raw_io_64 = 0;
+
         if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
                 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
                         (status[0] == 0x00000001)) {
                 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
                         dev->raw_io_64 = 1;
-                if (dev->a_ops.adapter_comm &&
-                    (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM)))
-                        dev->comm_interface = AAC_COMM_MESSAGE;
+                if (dev->a_ops.adapter_comm) {
+                        if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1)) {
+                                dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
+                                dev->raw_io_interface = 1;
+                        } else if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM)) {
+                                dev->comm_interface = AAC_COMM_MESSAGE;
+                                dev->raw_io_interface = 1;
+                        }
+                }
                 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
                     (status[2] > dev->base_size)) {
                         aac_adapter_ioremap(dev, 0);
@@ -350,10 +380,12 @@ struct aac_dev *aac_init_adapter(struct aac_dev *dev)
                  *      status[3] & 0xFFFF      maximum number FIBs outstanding
                  */
                 host->max_sectors = (status[1] >> 16) << 1;
-                dev->max_fib_size = status[1] & 0xFFFF;
+                /* Multiple of 32 for PMC */
+                dev->max_fib_size = status[1] & 0xFFE0;
                 host->sg_tablesize = status[2] >> 16;
                 dev->sg_tablesize = status[2] & 0xFFFF;
                 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
+                dev->max_num_aif = status[4] & 0xFFFF;
                 /*
                  *      NOTE:
                  *      All these overrides are based on a fixed internal