linux-imx

/*

 *  copyright (c) 2006 IBM Corporation

 *  Authored by: Mike D. Day <ncmike@us.ibm.com>

 *

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

 *  it under the terms of the GNU General Public License version 2 as

 *  published by the Free Software Foundation.

 */

​

#include <linux/slab.h>

#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/kobject.h>

#include <linux/err.h>

​

#include <asm/xen/hypervisor.h>

#include <asm/xen/hypercall.h>

​

#include <xen/xen.h>

#include <xen/xenbus.h>

#include <xen/interface/xen.h>

#include <xen/interface/version.h>

#ifdef CONFIG_XEN_HAVE_VPMU

#include <xen/interface/xenpmu.h>

#endif

​

#define HYPERVISOR_ATTR_RO(_name) \

static struct hyp_sysfs_attr  _name##_attr = __ATTR_RO(_name)

​

#define HYPERVISOR_ATTR_RW(_name) \

static struct hyp_sysfs_attr _name##_attr = \

    __ATTR(_name, 0644, _name##_show, _name##_store)

​

struct hyp_sysfs_attr {

    struct attribute attr;

    ssize_t (*show)(struct hyp_sysfs_attr *, char *);

    ssize_t (*store)(struct hyp_sysfs_attr *, const char *, size_t);

    void *hyp_attr_data;

};

​

static ssize_t type_show(struct hyp_sysfs_attr *attr, char *buffer)

{

    return sprintf(buffer, "xen\n");

}

​

HYPERVISOR_ATTR_RO(type);

​

static int __init xen_sysfs_type_init(void)

{

    return sysfs_create_file(hypervisor_kobj, &type_attr.attr);

}

​

static ssize_t guest_type_show(struct hyp_sysfs_attr *attr, char *buffer)

{

    const char *type;

​

    switch (xen_domain_type) {

    case XEN_NATIVE:

        /* ARM only. */

        type = "Xen";

        break;

    case XEN_PV_DOMAIN:

        type = "PV";

        break;

    case XEN_HVM_DOMAIN:

        type = xen_pvh_domain() ? "PVH" : "HVM";

        break;

    default:

        return -EINVAL;

    }

​

    return sprintf(buffer, "%s\n", type);

}

​

HYPERVISOR_ATTR_RO(guest_type);

​

static int __init xen_sysfs_guest_type_init(void)

{

    return sysfs_create_file(hypervisor_kobj, &guest_type_attr.attr);

}

​

/* xen version attributes */

static ssize_t major_show(struct hyp_sysfs_attr *attr, char *buffer)

{

    int version = HYPERVISOR_xen_version(XENVER_version, NULL);

    if (version)

        return sprintf(buffer, "%d\n", version >> 16);

    return -ENODEV;

}

​

HYPERVISOR_ATTR_RO(major);

​