FreeBSD/Linux Kernel Cross Reference
sys/dev/hyperv/vmbus/aarch64/hyperv_machdep.h

     /*- SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2022 Microsoft Corp.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice unmodified, this list of conditions, and the following
     *    disclaimer.
     * 2. 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.
     *
     * 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _HYPERV_MACHDEP_H_
    #define _HYPERV_MACHDEP_H_
    
    #include <sys/param.h>
    
    typedef uint32_t u32;
    typedef uint64_t u64;
    struct hv_get_vp_registers_output {
            union {
                    struct {
                            u32 a;
                            u32 b;
                            u32 c;
                            u32 d;
                    } as32 __packed;
                    struct {
                            u64 low;
                            u64 high;
                    } as64 __packed;
            };
    };
    
    uint64_t hypercall_md(volatile void *hc_addr, u64 in_val,
        u64 in_paddr, u64 out_paddr);
    void hv_get_vpreg_128(u32, struct hv_get_vp_registers_output *);
    void arm_hv_set_vreg(u32 msr, u64 val);
    #define WRMSR(msr, val) arm_hv_set_vreg(msr, val)
    u64 arm_hv_get_vreg(u32 msr);
    #define RDMSR(msr) arm_hv_get_vreg(msr)
    
    #endif /* !_HYPERV_MACHDEP_H_ */

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