drm/i915: add register read IOCTL

[firefly-linux-kernel-4.4.55.git] / include / drm / i915_drm.h

diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index 95648ab819acaed8c5ac857132fb93a21eb19125..b923b032743f0080990aaf98de0c923c48856081 100644 (file)
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -205,6 +205,7 @@ typedef struct _drm_i915_sarea {
 #define DRM_I915_GEM_CONTEXT_DESTROY   0x2e
 #define DRM_I915_GEM_SET_CACHEING      0x2f
 #define DRM_I915_GEM_GET_CACHEING      0x30
+#define DRM_I915_REG_READ              0x31
 
 #define DRM_IOCTL_I915_INIT            DRM_IOW( DRM_COMMAND_BASE + DRM_I915_INIT, drm_i915_init_t)
 #define DRM_IOCTL_I915_FLUSH           DRM_IO ( DRM_COMMAND_BASE + DRM_I915_FLUSH)
@@ -253,6 +254,7 @@ typedef struct _drm_i915_sarea {
 #define DRM_IOCTL_I915_GEM_WAIT                DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_WAIT, struct drm_i915_gem_wait)
 #define DRM_IOCTL_I915_GEM_CONTEXT_CREATE      DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_CREATE, struct drm_i915_gem_context_create)
 #define DRM_IOCTL_I915_GEM_CONTEXT_DESTROY     DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_CONTEXT_DESTROY, struct drm_i915_gem_context_destroy)
+#define DRM_IOCTL_I915_REG_READ                        DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_REG_READ, struct drm_i915_reg_read)
 
 /* Allow drivers to submit batchbuffers directly to hardware, relying
  * on the security mechanisms provided by hardware.
@@ -710,7 +712,7 @@ struct drm_i915_gem_busy {
 #define I915_CACHEING_CACHED           1
 
 struct drm_i915_gem_cacheing {
-       /** Handle of the buffer to check for busy */
+       /** Handle of the buffer to set/get the cacheing level of */
        __u32 handle;
 
        /** Cacheing level to apply or return value */
@@ -933,4 +935,8 @@ struct drm_i915_gem_context_destroy {
        __u32 pad;
 };
 
+struct drm_i915_reg_read {
+       __u64 offset;
+       __u64 val; /* Return value */
+};
 #endif                         /* _I915_DRM_H_ */