release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/scsi/aacraid/nark.c

   1 /*
   2  *      Adaptec AAC series RAID controller driver
   3  *
   4  * based on the old aacraid driver that is..
   5  * Adaptec aacraid device driver for Linux.
   6  *
   7  * Copyright (c) 2006-2007 Adaptec, Inc. (aacraid@adaptec.com)
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2, or (at your option)
  12  * any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; see the file COPYING.  If not, write to
  21  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  22  *
  23  * Module Name:
  24  *  nark.c
  25  *
  26  * Abstract: Hardware Device Interface for NEMER/ARK
  27  *
  28  */
  29
  30 #include <linux/pci.h>
  31 #include <linux/blkdev.h>
  32
  33 #include <scsi/scsi_host.h>
  34
  35 #include "aacraid.h"
  36
  37 /**
  38  *      aac_nark_ioremap
  39  *      @size: mapping resize request
  40  *
  41  */
  42 static int aac_nark_ioremap(struct aac_dev * dev, u32 size)
  43 {
  44         if (!size) {
  45                 iounmap(dev->regs.rx);
  46                 dev->regs.rx = NULL;
  47                 iounmap(dev->base);
  48                 dev->base = NULL;
  49                 return 0;
  50         }
  51         dev->scsi_host_ptr->base = pci_resource_start(dev->pdev, 2);
  52         dev->regs.rx = ioremap((u64)pci_resource_start(dev->pdev, 0) |
  53           ((u64)pci_resource_start(dev->pdev, 1) << 32),
  54           sizeof(struct rx_registers) - sizeof(struct rx_inbound));
  55         dev->base = NULL;
  56         if (dev->regs.rx == NULL)
  57                 return -1;
  58         dev->base = ioremap(dev->scsi_host_ptr->base, size);
  59         if (dev->base == NULL) {
  60                 iounmap(dev->regs.rx);
  61                 dev->regs.rx = NULL;
  62                 return -1;
  63         }
  64         dev->IndexRegs = &((struct rx_registers __iomem *)dev->base)->IndexRegs;
  65         return 0;
  66 }
  67
  68 /**
  69  *      aac_nark_init   -       initialize an NEMER/ARK Split Bar card
  70  *      @dev: device to configure
  71  *
  72  */
  73
  74 int aac_nark_init(struct aac_dev * dev)
  75 {
  76         /*
  77          *      Fill in the function dispatch table.
  78          */
  79         dev->a_ops.adapter_ioremap = aac_nark_ioremap;
  80         dev->a_ops.adapter_comm = aac_rx_select_comm;
  81
  82         return _aac_rx_init(dev);
  83 }