/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}