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 *               2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
   9 *               2016-2017 Microsemi Corp. (aacraid@microsemi.com)
  10 *
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of the GNU General Public License as published by
  13 * the Free Software Foundation; either version 2, or (at your option)
  14 * any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 * GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License
  22 * along with this program; see the file COPYING.  If not, write to
  23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  24 *
  25 * Module Name:
  26 *  nark.c
  27 *
  28 * Abstract: Hardware Device Interface for NEMER/ARK
  29 *
  30 */
  31
  32#include <linux/pci.h>
  33#include <linux/blkdev.h>
  34
  35#include <scsi/scsi_host.h>
  36
  37#include "aacraid.h"
  38
  39/**
  40 *      aac_nark_ioremap
  41 *      @size: mapping resize request
  42 *
  43 */
  44static int aac_nark_ioremap(struct aac_dev * dev, u32 size)
  45{
  46        if (!size) {
  47                iounmap(dev->regs.rx);
  48                dev->regs.rx = NULL;
  49                iounmap(dev->base);
  50                dev->base = NULL;
  51                return 0;
  52        }
  53        dev->base_start = pci_resource_start(dev->pdev, 2);
  54        dev->regs.rx = ioremap((u64)pci_resource_start(dev->pdev, 0) |
  55          ((u64)pci_resource_start(dev->pdev, 1) << 32),
  56          sizeof(struct rx_registers) - sizeof(struct rx_inbound));
  57        dev->base = NULL;
  58        if (dev->regs.rx == NULL)
  59                return -1;
  60        dev->base = ioremap(dev->base_start, size);
  61        if (dev->base == NULL) {
  62                iounmap(dev->regs.rx);
  63                dev->regs.rx = NULL;
  64                return -1;
  65        }
  66        dev->IndexRegs = &((struct rx_registers __iomem *)dev->base)->IndexRegs;
  67        return 0;
  68}
  69
  70/**
  71 *      aac_nark_init   -       initialize an NEMER/ARK Split Bar card
  72 *      @dev: device to configure
  73 *
  74 */
  75
  76int aac_nark_init(struct aac_dev * dev)
  77{
  78        /*
  79         *      Fill in the function dispatch table.
  80         */
  81        dev->a_ops.adapter_ioremap = aac_nark_ioremap;
  82        dev->a_ops.adapter_comm = aac_rx_select_comm;
  83
  84        return _aac_rx_init(dev);
  85}
  86