LXR linux/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) 2000-2010 Adaptec, Inc.
   8 *               2010 PMC-Sierra, Inc. (aacraid@pmc-sierra.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 */
  43static 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->base_start = 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->base_start, 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
  75int 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}
  85