linux-imx

/*

 * This file is subject to the terms and conditions of the GNU General Public

 * License.  See the file "COPYING" in the main directory of this archive

 * for more details.

 *

 * Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.

 */

​

/*

 * Cross Partition (XP) uv-based functions.

 *

 *      Architecture specific implementation of common functions.

 *

 */

​

#include <linux/device.h>

#include <asm/uv/uv_hub.h>

#if defined CONFIG_X86_64

#include <asm/uv/bios.h>

#elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV

#include <asm/sn/sn_sal.h>

#endif

#include "../sgi-gru/grukservices.h"

#include "xp.h"

​

/*

 * Convert a virtual memory address to a physical memory address.

 */

static unsigned long

xp_pa_uv(void *addr)

{

    return uv_gpa(addr);

}

​

/*

 * Convert a global physical to socket physical address.

 */

static unsigned long

xp_socket_pa_uv(unsigned long gpa)

{

    return uv_gpa_to_soc_phys_ram(gpa);

}

​

static enum xp_retval

xp_remote_mmr_read(unsigned long dst_gpa, const unsigned long src_gpa,

           size_t len)

{

    int ret;

    unsigned long *dst_va = __va(uv_gpa_to_soc_phys_ram(dst_gpa));

​

    BUG_ON(!uv_gpa_in_mmr_space(src_gpa));

    BUG_ON(len != 8);

​

    ret = gru_read_gpa(dst_va, src_gpa);

    if (ret == 0)

        return xpSuccess;

​

    dev_err(xp, "gru_read_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx "

        "len=%ld\n", dst_gpa, src_gpa, len);

    return xpGruCopyError;

}

​

​