LXR linux/drivers/scsi/aacraid/nark.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *      Adaptec AAC series RAID controller driver
   4 *
   5 * based on the old aacraid driver that is..
   6 * Adaptec aacraid device driver for Linux.
   7 *
   8 * Copyright (c) 2000-2010 Adaptec, Inc.
   9 *               2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
  10 *               2016-2017 Microsemi Corp. (aacraid@microsemi.com)
  11 *
  12 * Module Name:
  13 *  nark.c
  14 *
  15 * Abstract: Hardware Device Interface for NEMER/ARK
  16 */
  17
  18#include <linux/pci.h>
  19#include <linux/blkdev.h>
  20
  21#include <scsi/scsi_host.h>
  22
  23#include "aacraid.h"
  24
  25/**
  26 *      aac_nark_ioremap
  27 *      @size: mapping resize request
  28 *
  29 */
  30static int aac_nark_ioremap(struct aac_dev * dev, u32 size)
  31{
  32        if (!size) {
  33                iounmap(dev->regs.rx);
  34                dev->regs.rx = NULL;
  35                iounmap(dev->base);
  36                dev->base = NULL;
  37                return 0;
  38        }
  39        dev->base_start = pci_resource_start(dev->pdev, 2);
  40        dev->regs.rx = ioremap((u64)pci_resource_start(dev->pdev, 0) |
  41          ((u64)pci_resource_start(dev->pdev, 1) << 32),
  42          sizeof(struct rx_registers) - sizeof(struct rx_inbound));
  43        dev->base = NULL;
  44        if (dev->regs.rx == NULL)
  45                return -1;
  46        dev->base = ioremap(dev->base_start, size);
  47        if (dev->base == NULL) {
  48                iounmap(dev->regs.rx);
  49                dev->regs.rx = NULL;
  50                return -1;
  51        }
  52        dev->IndexRegs = &((struct rx_registers __iomem *)dev->base)->IndexRegs;
  53        return 0;
  54}
  55
  56/**
  57 *      aac_nark_init   -       initialize an NEMER/ARK Split Bar card
  58 *      @dev: device to configure
  59 *
  60 */
  61
  62int aac_nark_init(struct aac_dev * dev)
  63{
  64        /*
  65         *      Fill in the function dispatch table.
  66         */
  67        dev->a_ops.adapter_ioremap = aac_nark_ioremap;
  68        dev->a_ops.adapter_comm = aac_rx_select_comm;
  69
  70        return _aac_rx_init(dev);
  71}
  72