LXR qemu/contrib/vhost-user-gpu/vugbm.h

   1/*
   2 * Virtio vhost-user GPU Device
   3 *
   4 * GBM helpers
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7 * See the COPYING file in the top-level directory.
   8 */
   9
  10#ifndef VHOST_USER_GPU_VUGBM_H
  11#define VHOST_USER_GPU_VUGBM_H
  12
  13#include "qemu/osdep.h"
  14
  15#ifdef CONFIG_MEMFD
  16#include <sys/mman.h>
  17#include <sys/ioctl.h>
  18#endif
  19
  20#ifdef CONFIG_GBM
  21#include <gbm.h>
  22#endif
  23
  24struct vugbm_buffer;
  25
  26struct vugbm_device {
  27    bool inited;
  28    int fd;
  29#ifdef CONFIG_GBM
  30    struct gbm_device *dev;
  31#endif
  32
  33    bool (*alloc_bo)(struct vugbm_buffer *buf);
  34    void (*free_bo)(struct vugbm_buffer *buf);
  35    bool (*get_fd)(struct vugbm_buffer *buf, int *fd);
  36    bool (*map_bo)(struct vugbm_buffer *buf);
  37    void (*unmap_bo)(struct vugbm_buffer *buf);
  38    void (*device_destroy)(struct vugbm_device *dev);
  39};
  40
  41struct vugbm_buffer {
  42    struct vugbm_device *dev;
  43
  44#ifdef CONFIG_MEMFD
  45    int memfd;
  46#endif
  47#ifdef CONFIG_GBM
  48    struct gbm_bo *bo;
  49    void *mmap_data;
  50#endif
  51
  52    uint8_t *mmap;
  53    uint32_t width;
  54    uint32_t height;
  55    uint32_t stride;
  56    uint32_t format;
  57};
  58
  59bool vugbm_device_init(struct vugbm_device *dev, int fd);
  60void vugbm_device_destroy(struct vugbm_device *dev);
  61
  62bool vugbm_buffer_create(struct vugbm_buffer *buffer, struct vugbm_device *dev,
  63                         uint32_t width, uint32_t height);
  64bool vugbm_buffer_can_get_dmabuf_fd(struct vugbm_buffer *buffer);
  65bool vugbm_buffer_get_dmabuf_fd(struct vugbm_buffer *buffer, int *fd);
  66void vugbm_buffer_destroy(struct vugbm_buffer *buffer);
  67
  68#endif
  69