release/src-rt-6.x/linux/linux-2.6/drivers/scsi/aacraid/nark.c

   1 /*
   2  *      Adaptec AAC series RAID controller driver
   3  *      (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
   4  *
   5  * based on the old aacraid driver that is..
   6  * Adaptec aacraid device driver for Linux.
   7  *
   8  * Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; see the file COPYING.  If not, write to
  22  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Module Name:
  25  *  nark.c
  26  *
  27  * Abstract: Hardware Device Interface for NEMER/ARK
  28  *
  29  */
  30
  31 #include <linux/pci.h>
  32 #include <linux/blkdev.h>
  33
  34 #include <scsi/scsi_host.h>
  35
  36 #include "aacraid.h"
  37
  38 /**
  39  *      aac_nark_ioremap
  40  *      @size: mapping resize request
  41  *
  42  */
  43 static int aac_nark_ioremap(struct aac_dev * dev, u32 size)
  44 {
  45         if (!size) {
  46                 iounmap(dev->regs.rx);
  47                 dev->regs.rx = NULL;
  48                 iounmap(dev->base);
  49                 dev->base = NULL;
  50                 return 0;
  51         }
  52         dev->scsi_host_ptr->base = pci_resource_start(dev->pdev, 2);
  53         dev->regs.rx = ioremap((u64)pci_resource_start(dev->pdev, 0) |
  54           ((u64)pci_resource_start(dev->pdev, 1) << 32),
  55           sizeof(struct rx_registers) - sizeof(struct rx_inbound));
  56         dev->base = NULL;
  57         if (dev->regs.rx == NULL)
  58                 return -1;
  59         dev->base = ioremap(dev->scsi_host_ptr->base, size);
  60         if (dev->base == NULL) {
  61                 iounmap(dev->regs.rx);
  62                 dev->regs.rx = NULL;
  63                 return -1;
  64         }
  65         dev->IndexRegs = &((struct rx_registers __iomem *)dev->base)->IndexRegs;
  66         return 0;
  67 }
  68
  69 /**
  70  *      aac_nark_init   -       initialize an NEMER/ARK Split Bar card
  71  *      @dev: device to configure
  72  *
  73  */
  74
  75 int aac_nark_init(struct aac_dev * dev)
  76 {
  77         /*
  78          *      Fill in the function dispatch table.
  79          */
  80         dev->a_ops.adapter_ioremap = aac_nark_ioremap;
  81         dev->a_ops.adapter_comm = aac_rx_select_comm;
  82
  83         return _aac_rx_init(dev);
  84 }