1 files changed, 126 insertions, 0 deletions
diff --git a/mesalib/src/gallium/include/state_tracker/drm_driver.h b/mesalib/src/gallium/include/state_tracker/drm_driver.h
new file mode 100644
index 000000000..740c4bbe1
--- /dev/null
+++ b/mesalib/src/gallium/include/state_tracker/drm_driver.h
@@ -0,0 +1,126 @@
+
+#ifndef _DRM_DRIVER_H_
+#define _DRM_DRIVER_H_
+
+#include "pipe/p_compiler.h"
+
+struct pipe_screen;
+struct pipe_context;
+struct pipe_resource;
+
+#define DRM_API_HANDLE_TYPE_SHARED 0
+#define DRM_API_HANDLE_TYPE_KMS    1
+#define DRM_API_HANDLE_TYPE_FD     2
+
+
+/**
+ * For use with pipe_screen::{texture_from_handle|texture_get_handle}.
+ */
+struct winsys_handle
+{
+   /**
+    * Input for texture_from_handle, valid values are
+    * DRM_API_HANDLE_TYPE_SHARED or DRM_API_HANDLE_TYPE_FD.
+    * Input to texture_get_handle,
+    * to select handle for kms, flink, or prime.
+    */
+   unsigned type;
+   /**
+    * Input to texture_from_handle.
+    * Output for texture_get_handle.
+    */
+   unsigned handle;
+   /**
+    * Input to texture_from_handle.
+    * Output for texture_get_handle.
+    */
+   unsigned stride;
+};
+
+
+
+/**
+ * Configuration queries.
+ */
+enum drm_conf {
+   /* How many frames to allow before throttling. Or -1 to indicate any number */
+   DRM_CONF_THROTTLE, /* DRM_CONF_INT. */
+   /* Can this driver, running on this kernel, import and export dma-buf fds? */
+   DRM_CONF_SHARE_FD, /* DRM_CONF_BOOL. */
+   DRM_CONF_MAX
+};
+
+/**
+ * Type of configuration answer
+ */
+enum drm_conf_type {
+   DRM_CONF_INT,
+   DRM_CONF_BOOL,
+   DRM_CONF_FLOAT,
+   DRM_CONF_POINTER
+};
+
+/**
+ * Return value from the configuration function.
+ */
+struct drm_conf_ret {
+   enum drm_conf_type type;
+   union {
+      int val_int;
+      bool val_bool;
+      float val_float;
+      void *val_pointer;
+   } val;
+};
+
+struct drm_driver_descriptor
+{
+   /**
+    * Identifying sufix/prefix of the binary, used by egl.
+    */
+   const char *name;
+
+   /**
+    * Kernel driver name, as accepted by drmOpenByName.
+    */
+   const char *driver_name;
+
+   /**
+    * Create a pipe srcreen.
+    *
+    * This function does any wrapping of the screen.
+    * For example wrapping trace or rbug debugging drivers around it.
+    */
+   struct pipe_screen* (*create_screen)(int drm_fd);
+
+
+   /**
+    * Return a configuration value.
+    *
+    * If this function is NULL, or if it returns NULL
+    * the state tracker- or state
+    * tracker manager should provide a reasonable default value.
+    */
+   const struct drm_conf_ret *(*configuration) (enum drm_conf conf);
+};
+
+extern struct drm_driver_descriptor driver_descriptor;
+
+/**
+ * Instantiate a drm_driver_descriptor struct.
+ */
+#define DRM_DRIVER_DESCRIPTOR(name_str, driver_name_str, func, conf) \
+struct drm_driver_descriptor driver_descriptor = {             \
+   .name = name_str,                                           \
+   .driver_name = driver_name_str,                             \
+   .create_screen = func,                                      \
+   .configuration = (conf),				       \
+};
+
+extern struct pipe_screen *dd_create_screen(int fd);
+
+extern const char *dd_driver_name(void);
+
+extern const struct drm_conf_ret *dd_configuration(enum drm_conf conf);
+
+#endif