cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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nark.c (1643B)

      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 *	@dev: device to ioremap
     28 *	@size: mapping resize request
     29 *
     30 */
     31static int aac_nark_ioremap(struct aac_dev * dev, u32 size)
     32{
     33	if (!size) {
     34		iounmap(dev->regs.rx);
     35		dev->regs.rx = NULL;
     36		iounmap(dev->base);
     37		dev->base = NULL;
     38		return 0;
     39	}
     40	dev->base_start = pci_resource_start(dev->pdev, 2);
     41	dev->regs.rx = ioremap((u64)pci_resource_start(dev->pdev, 0) |
     42	  ((u64)pci_resource_start(dev->pdev, 1) << 32),
     43	  sizeof(struct rx_registers) - sizeof(struct rx_inbound));
     44	dev->base = NULL;
     45	if (dev->regs.rx == NULL)
     46		return -1;
     47	dev->base = ioremap(dev->base_start, size);
     48	if (dev->base == NULL) {
     49		iounmap(dev->regs.rx);
     50		dev->regs.rx = NULL;
     51		return -1;
     52	}
     53	dev->IndexRegs = &((struct rx_registers __iomem *)dev->base)->IndexRegs;
     54	return 0;
     55}
     56
     57/**
     58 *	aac_nark_init	-	initialize an NEMER/ARK Split Bar card
     59 *	@dev: device to configure
     60 *
     61 */
     62
     63int aac_nark_init(struct aac_dev * dev)
     64{
     65	/*
     66	 *	Fill in the function dispatch table.
     67	 */
     68	dev->a_ops.adapter_ioremap = aac_nark_ioremap;
     69	dev->a_ops.adapter_comm = aac_rx_select_comm;
     70
     71	return _aac_rx_init(dev);
     72}