// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef _LINUX_VIRTMAGMA_H
#define _LINUX_VIRTMAGMA_H

#include <asm/ioctl.h>
#include <linux/types.h>

#define VIRTMAGMA_IOCTL_BASE	 'm'
#define VIRTMAGMA_IO(nr)	 _IO(VIRTMAGMA_IOCTL_BASE, nr)
#define VIRTMAGMA_IOR(nr, type)	 _IOR(VIRTMAGMA_IOCTL_BASE, nr, type)
#define VIRTMAGMA_IOW(nr, type)	 _IOW(VIRTMAGMA_IOCTL_BASE, nr, type)
#define VIRTMAGMA_IOWR(nr, type) _IOWR(VIRTMAGMA_IOCTL_BASE, nr, type)
#define VIRTMAGMA_MAKE_VERSION(major, minor, patch) \
	(((major) << 24) | ((minor) << 12) | (patch))
#define VIRTMAGMA_GET_VERSION(version, major, minor, patch) (\
	(major = ((version) >> 24)), \
	(minor = ((version) >> 12) & 0x3FF), \
	(patch = (version) & 0x3FF), (version))

#define VIRTMAGMA_HANDSHAKE_SEND 0x46434853
#define VIRTMAGMA_HANDSHAKE_RECV 0x474F4F47
#define VIRTMAGMA_VERSION VIRTMAGMA_MAKE_VERSION(0,1,0)
struct virtmagma_ioctl_args_handshake {
	__u32 handshake_inout;
	__u32 version_out;
};

struct virtmagma_ioctl_args_get_mmfd {
	__s32 fd_out;
};

struct virtmagma_ioctl_args_magma_command {
	__u64 request_address;
	__u64 request_size;
	__u64 response_address;
	__u64 response_size;
};

struct virtmagma_command_buffer {
	__u64 command_buffer_size;
	__u64 command_buffer;
	__u64 resource_size;
	__u64 resources;
	__u64 semaphore_size;
	__u64 semaphores;
};

#define VIRTMAGMA_IOCTL_HANDSHAKE VIRTMAGMA_IOWR(0x00, struct virtmagma_ioctl_args_handshake)
#define VIRTMAGMA_IOCTL_GET_MMFD VIRTMAGMA_IOWR(0x01, struct virtmagma_ioctl_args_get_mmfd)
#define VIRTMAGMA_IOCTL_MAGMA_COMMAND VIRTMAGMA_IOWR(0x02, struct virtmagma_ioctl_args_magma_command)

#endif /* _LINUX_VIRTMAGMA_H */