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/*
* Virtio vhost-user GPU Device
*
* Copyright Red Hat, Inc. 2013-2018
*
* Authors:
* Dave Airlie <airlied@redhat.com>
* Gerd Hoffmann <kraxel@redhat.com>
* Marc-André Lureau <marcandre.lureau@redhat.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*/
#ifndef VUGPU_H
#define VUGPU_H
#include "qemu/osdep.h"
#include "libvhost-user-glib.h"
#include "standard-headers/linux/virtio_gpu.h"
#include "qemu/queue.h"
#include "qemu/iov.h"
#include "qemu/bswap.h"
#include "vugbm.h"
typedef enum VhostUserGpuRequest {
VHOST_USER_GPU_NONE = 0,
VHOST_USER_GPU_GET_PROTOCOL_FEATURES,
VHOST_USER_GPU_SET_PROTOCOL_FEATURES,
VHOST_USER_GPU_GET_DISPLAY_INFO,
VHOST_USER_GPU_CURSOR_POS,
VHOST_USER_GPU_CURSOR_POS_HIDE,
VHOST_USER_GPU_CURSOR_UPDATE,
VHOST_USER_GPU_SCANOUT,
VHOST_USER_GPU_UPDATE,
VHOST_USER_GPU_DMABUF_SCANOUT,
VHOST_USER_GPU_DMABUF_UPDATE,
} VhostUserGpuRequest;
typedef struct VhostUserGpuDisplayInfoReply {
struct virtio_gpu_resp_display_info info;
} VhostUserGpuDisplayInfoReply;
typedef struct VhostUserGpuCursorPos {
uint32_t scanout_id;
uint32_t x;
uint32_t y;
} QEMU_PACKED VhostUserGpuCursorPos;
typedef struct VhostUserGpuCursorUpdate {
VhostUserGpuCursorPos pos;
uint32_t hot_x;
uint32_t hot_y;
uint32_t data[64 * 64];
} QEMU_PACKED VhostUserGpuCursorUpdate;
typedef struct VhostUserGpuScanout {
uint32_t scanout_id;
uint32_t width;
uint32_t height;
} QEMU_PACKED VhostUserGpuScanout;
typedef struct VhostUserGpuUpdate {
uint32_t scanout_id;
uint32_t x;
uint32_t y;
uint32_t width;
uint32_t height;
uint8_t data[];
} QEMU_PACKED VhostUserGpuUpdate;
typedef struct VhostUserGpuDMABUFScanout {
uint32_t scanout_id;
uint32_t x;
uint32_t y;
uint32_t width;
uint32_t height;
uint32_t fd_width;
uint32_t fd_height;
uint32_t fd_stride;
uint32_t fd_flags;
int fd_drm_fourcc;
} QEMU_PACKED VhostUserGpuDMABUFScanout;
typedef struct VhostUserGpuMsg {
uint32_t request; /* VhostUserGpuRequest */
uint32_t flags;
uint32_t size; /* the following payload size */
union {
VhostUserGpuCursorPos cursor_pos;
VhostUserGpuCursorUpdate cursor_update;
VhostUserGpuScanout scanout;
VhostUserGpuUpdate update;
VhostUserGpuDMABUFScanout dmabuf_scanout;
struct virtio_gpu_resp_display_info display_info;
uint64_t u64;
} payload;
} QEMU_PACKED VhostUserGpuMsg;
static VhostUserGpuMsg m __attribute__ ((unused));
#define VHOST_USER_GPU_HDR_SIZE \
(sizeof(m.request) + sizeof(m.flags) + sizeof(m.size))
#define VHOST_USER_GPU_MSG_FLAG_REPLY 0x4
struct virtio_gpu_scanout {
uint32_t width, height;
int x, y;
int invalidate;
uint32_t resource_id;
};
typedef struct VuGpu {
VugDev dev;
struct virtio_gpu_config virtio_config;
struct vugbm_device gdev;
int sock_fd;
int drm_rnode_fd;
GSource *renderer_source;
guint wait_ok;
bool virgl;
bool virgl_inited;
uint32_t inflight;
struct virtio_gpu_scanout scanout[VIRTIO_GPU_MAX_SCANOUTS];
QTAILQ_HEAD(, virtio_gpu_simple_resource) reslist;
QTAILQ_HEAD(, virtio_gpu_ctrl_command) fenceq;
} VuGpu;
struct virtio_gpu_ctrl_command {
VuVirtqElement elem;
VuVirtq *vq;
struct virtio_gpu_ctrl_hdr cmd_hdr;
uint32_t error;
bool finished;
QTAILQ_ENTRY(virtio_gpu_ctrl_command) next;
};
#define VUGPU_FILL_CMD(out) do { \
size_t s; \
s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 0, \
&out, sizeof(out)); \
if (s != sizeof(out)) { \
g_critical("%s: command size incorrect %zu vs %zu", \
__func__, s, sizeof(out)); \
return; \
} \
} while (0)
void vg_ctrl_response(VuGpu *g,
struct virtio_gpu_ctrl_command *cmd,
struct virtio_gpu_ctrl_hdr *resp,
size_t resp_len);
void vg_ctrl_response_nodata(VuGpu *g,
struct virtio_gpu_ctrl_command *cmd,
enum virtio_gpu_ctrl_type type);
int vg_create_mapping_iov(VuGpu *g,
struct virtio_gpu_resource_attach_backing *ab,
struct virtio_gpu_ctrl_command *cmd,
struct iovec **iov);
void vg_get_display_info(VuGpu *vg, struct virtio_gpu_ctrl_command *cmd);
void vg_wait_ok(VuGpu *g);
void vg_send_msg(VuGpu *g, const VhostUserGpuMsg *msg, int fd);
bool vg_recv_msg(VuGpu *g, uint32_t expect_req, uint32_t expect_size,
gpointer payload);
#endif
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