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
  14 #ifdef CONFIG_MEMFD
  15 #include <sys/ioctl.h>
  16 #endif
  17
  18 #ifdef CONFIG_GBM
  19 #include <gbm.h>
  20 #endif
  21
  22 struct vugbm_buffer;
  23
  24 struct vugbm_device {
  25     bool inited;
  26     int fd;
  27 #ifdef CONFIG_GBM
  28     struct gbm_device *dev;
  29 #endif
  30
  31     bool (*alloc_bo)(struct vugbm_buffer *buf);
  32     void (*free_bo)(struct vugbm_buffer *buf);
  33     bool (*get_fd)(struct vugbm_buffer *buf, int *fd);
  34     bool (*map_bo)(struct vugbm_buffer *buf);
  35     void (*unmap_bo)(struct vugbm_buffer *buf);
  36     void (*device_destroy)(struct vugbm_device *dev);
  37 };
  38
  39 struct vugbm_buffer {
  40     struct vugbm_device *dev;
  41
  42 #ifdef CONFIG_MEMFD
  43     int memfd;
  44 #endif
  45 #ifdef CONFIG_GBM
  46     struct gbm_bo *bo;
  47     void *mmap_data;
  48 #endif
  49
  50     uint8_t *mmap;
  51     uint32_t width;
  52     uint32_t height;
  53     uint32_t stride;
  54     uint32_t format;
  55 };
  56
  57 void vugbm_device_init(struct vugbm_device *dev, int fd);
  58 void vugbm_device_destroy(struct vugbm_device *dev);
  59
  60 bool vugbm_buffer_create(struct vugbm_buffer *buffer, struct vugbm_device *dev,
  61                          uint32_t width, uint32_t height);
  62 bool vugbm_buffer_can_get_dmabuf_fd(struct vugbm_buffer *buffer);
  63 bool vugbm_buffer_get_dmabuf_fd(struct vugbm_buffer *buffer, int *fd);
  64 void vugbm_buffer_destroy(struct vugbm_buffer *buffer);
  65
  66 #endif