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/*

 * Copyright (C) 2006 Martin Decky

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef __xen32_HYPERCALL_H__

#define __xen32_HYPERCALL_H__

#include <arch/types.h>

#include <macros.h>

typedef uint16_t domid_t;

typedef struct {

    uint64_t ptr;  /**< Machine address of PTE */

    uint64_t val;  /**< New contents of PTE */

} mmu_update_t;

typedef struct {

    unsigned int cmd;

    union {

        unsigned long mfn;

        unsigned long linear_addr;

    } arg1;

    union {

        unsigned int nr_ents;

        void *vcpumask;

    } arg2;

} mmuext_op_t;

#define XEN_MMU_UPDATE  1

#define XEN_CONSOLE_IO  18

#define XEN_MMUEXT_OP   26

/*

 * Commands for XEN_CONSOLE_IO

 */

#define CONSOLE_IO_WRITE    0

#define CONSOLE_IO_READ     1

#define MMUEXT_PIN_L1_TABLE      0

#define MMUEXT_PIN_L2_TABLE      1

#define MMUEXT_PIN_L3_TABLE      2

#define MMUEXT_PIN_L4_TABLE      3

#define MMUEXT_UNPIN_TABLE       4

#define MMUEXT_NEW_BASEPTR       5

#define MMUEXT_TLB_FLUSH_LOCAL   6

#define MMUEXT_INVLPG_LOCAL      7

#define MMUEXT_TLB_FLUSH_MULTI   8

#define MMUEXT_INVLPG_MULTI      9

#define MMUEXT_TLB_FLUSH_ALL    10

#define MMUEXT_INVLPG_ALL       11

#define MMUEXT_FLUSH_CACHE      12

#define MMUEXT_SET_LDT          13

#define MMUEXT_NEW_USER_BASEPTR 15

#define DOMID_SELF (0x7FF0U)

#define DOMID_IO   (0x7FF1U)

#define hypercall0(id)  \

    ({  \

        unative_t ret;  \

        asm volatile (  \

            "call hypercall_page + (" STRING(id) " * 32)\n" \

            : "=a" (ret)    \

            :   \

            : "memory"  \

        );  \

        ret;    \

    })

#define hypercall1(id, p1)  \

    ({  \

        unative_t ret, __ign1;  \

        asm volatile (  \

            "call hypercall_page + (" STRING(id) " * 32)\n" \

            : "=a" (ret), \

              "=b" (__ign1) \

            : "1" (p1)  \

            : "memory"  \

        );  \

        ret;    \

    })

#define hypercall2(id, p1, p2)  \

    ({  \

        unative_t ret, __ign1, __ign2;  \

        asm volatile (  \

            "call hypercall_page + (" STRING(id) " * 32)\n" \

            : "=a" (ret), \

              "=b" (__ign1),    \

              "=c" (__ign2) \

            : "1" (p1), \

              "2" (p2)  \

            : "memory"  \

        );  \

        ret;    \

    })

#define hypercall3(id, p1, p2, p3)  \

    ({  \

        unative_t ret, __ign1, __ign2, __ign3;  \

        asm volatile (  \

            "call hypercall_page + (" STRING(id) " * 32)\n" \

            : "=a" (ret), \

              "=b" (__ign1),    \

              "=c" (__ign2),    \

              "=d" (__ign3) \

            : "1" (p1), \

              "2" (p2), \

              "3" (p3)  \

            : "memory"  \

        );  \

        ret;    \

    })

#define hypercall4(id, p1, p2, p3, p4)  \

    ({  \

        unative_t ret, __ign1, __ign2, __ign3, __ign4;  \

        asm volatile (  \

            "call hypercall_page + (" STRING(id) " * 32)\n" \

            : "=a" (ret), \

              "=b" (__ign1),    \

              "=c" (__ign2),    \

              "=d" (__ign3),    \

              "=S" (__ign4) \

            : "1" (p1), \

              "2" (p2), \

              "3" (p3), \

              "4" (p4)  \

            : "memory"  \

        );  \

        ret;    \

    })

#define hypercall5(id, p1, p2, p3, p4, p5)  \

    ({  \

        unative_t ret, __ign1, __ign2, __ign3, __ign4, __ign5;  \

        asm volatile (  \

            "call hypercall_page + (" STRING(id) " * 32)\n" \

            : "=a" (ret), \

              "=b" (__ign1),    \

              "=c" (__ign2),    \

              "=d" (__ign3),    \

              "=S" (__ign4),    \

              "=D" (__ign5) \

            : "1" (p1), \

              "2" (p2), \

              "3" (p3), \

              "4" (p4), \

              "5" (p5)  \

            : "memory"  \

        );  \

        ret;    \

    })

static inline int xen_console_io(const unsigned int cmd, const unsigned int count, const char *str)

{

    return hypercall3(XEN_CONSOLE_IO, cmd, count, str);

}

static inline int xen_mmu_update(const mmu_update_t *req, const unsigned int count, unsigned int *success_count, domid_t domid)

{

    return hypercall4(XEN_MMU_UPDATE, req, count, success_count, domid);

}

static inline int xen_mmuext_op(const mmuext_op_t *op, const unsigned int count, unsigned int *success_count, domid_t domid)

{

    return hypercall4(XEN_MMUEXT_OP, op, count, success_count, domid);

}

#endif