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  */
  44 static 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
  76 int 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 }