116 lines
2.5 KiB
C
116 lines
2.5 KiB
C
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#ifndef _DRM_DRIVER_H_
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#define _DRM_DRIVER_H_
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#include "pipe/p_compiler.h"
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struct pipe_screen;
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struct pipe_context;
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struct pipe_resource;
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#define DRM_API_HANDLE_TYPE_SHARED 0
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#define DRM_API_HANDLE_TYPE_KMS 1
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/**
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* For use with pipe_screen::{texture_from_handle|texture_get_handle}.
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*/
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struct winsys_handle
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{
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/**
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* Unused for texture_from_handle, always
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* DRM_API_HANDLE_TYPE_SHARED. Input to texture_get_handle,
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* use TEXTURE_USAGE to select handle for kms or ipc.
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*/
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unsigned type;
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/**
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* Input to texture_from_handle.
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* Output for texture_get_handle.
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*/
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unsigned handle;
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/**
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* Input to texture_from_handle.
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* Output for texture_get_handle.
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*/
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unsigned stride;
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};
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/**
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* Configuration queries.
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*/
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enum drm_conf {
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/* How many frames to allow before throttling. Or -1 to indicate any number */
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DRM_CONF_THROTTLE, /* DRM_CONF_INT. */
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DRM_CONF_MAX
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};
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/**
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* Type of configuration answer
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*/
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enum drm_conf_type {
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DRM_CONF_INT,
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DRM_CONF_BOOL,
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DRM_CONF_FLOAT,
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DRM_CONF_POINTER
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};
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/**
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* Return value from the configuration function.
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*/
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struct drm_conf_ret {
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enum drm_conf_type type;
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union {
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int val_int;
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bool val_bool;
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float val_float;
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void *val_pointer;
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} val;
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};
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struct drm_driver_descriptor
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{
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/**
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* Identifying sufix/prefix of the binary, used by egl.
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*/
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const char *name;
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/**
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* Kernel driver name, as accepted by drmOpenByName.
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*/
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const char *driver_name;
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/**
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* Create a pipe srcreen.
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*
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* This function does any wrapping of the screen.
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* For example wrapping trace or rbug debugging drivers around it.
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*/
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struct pipe_screen* (*create_screen)(int drm_fd);
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/**
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* Return a configuration value.
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*
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* If this function is NULL, or if it returns NULL
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* the state tracker- or state
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* tracker manager should provide a reasonable default value.
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*/
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const struct drm_conf_ret *(*configuration) (enum drm_conf conf);
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};
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extern struct drm_driver_descriptor driver_descriptor;
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/**
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* Instantiate a drm_driver_descriptor struct.
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*/
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#define DRM_DRIVER_DESCRIPTOR(name_str, driver_name_str, func, conf) \
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struct drm_driver_descriptor driver_descriptor = { \
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.name = name_str, \
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.driver_name = driver_name_str, \
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.create_screen = func, \
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.configuration = (conf), \
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};
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#endif
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