linux-imx

/******************************************************************************

 * platform-pci.c

 *

 * Xen platform PCI device driver

 *

 * Authors: ssmith@xensource.com and stefano.stabellini@eu.citrix.com

 *

 * Copyright (c) 2005, Intel Corporation.

 * Copyright (c) 2007, XenSource Inc.

 * Copyright (c) 2010, Citrix

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms and conditions of the GNU General Public License,

 * version 2, as published by the Free Software Foundation.

 *

 * This program is distributed in the hope it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for

 * more details.

 *

 * You should have received a copy of the GNU General Public License along with

 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple

 * Place - Suite 330, Boston, MA 02111-1307 USA.

 *

 */

​

​

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/init.h>

#include <linux/pci.h>

​

#include <xen/platform_pci.h>

#include <xen/grant_table.h>

#include <xen/xenbus.h>

#include <xen/events.h>

#include <xen/hvm.h>

#include <xen/xen-ops.h>

​

#define DRV_NAME    "xen-platform-pci"

​

static unsigned long platform_mmio;

static unsigned long platform_mmio_alloc;

static unsigned long platform_mmiolen;

static uint64_t callback_via;

​

static unsigned long alloc_xen_mmio(unsigned long len)

{

    unsigned long addr;

​

    addr = platform_mmio + platform_mmio_alloc;

    platform_mmio_alloc += len;

    BUG_ON(platform_mmio_alloc > platform_mmiolen);

​

    return addr;

}

​

static uint64_t get_callback_via(struct pci_dev *pdev)

{

    u8 pin;

    int irq;

​

    irq = pdev->irq;