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
  24 struct vugbm_buffer;
  25
  26 struct 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
  41 struct 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
  59 bool vugbm_device_init(struct vugbm_device *dev, int fd);
  60 void vugbm_device_destroy(struct vugbm_device *dev);
  61
  62 bool vugbm_buffer_create(struct vugbm_buffer *buffer, struct vugbm_device *dev,
  63                          uint32_t width, uint32_t height);
  64 bool vugbm_buffer_can_get_dmabuf_fd(struct vugbm_buffer *buffer);
  65 bool vugbm_buffer_get_dmabuf_fd(struct vugbm_buffer *buffer, int *fd);
  66 void vugbm_buffer_destroy(struct vugbm_buffer *buffer);
  67
  68 #endif