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  */
  30 static 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
  62 int 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 }