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i915: Add GEM ioctl to get available aperture size.

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This will let userland know when to submit its batchbuffers, before they get
too big to fit in the aperture.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Eric Anholt
2008-10-22 21:40:13 -07:00
committed by Dave Airlie
parent 4e270e9b8a
commit 5a125c3c79
4 changed files with 38 additions and 0 deletions
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13
include/drm/i915_drm.h
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@@ -159,6 +159,7 @@ typedef struct _drm_i915_sarea {
#define DRM_I915_GEM_SW_FINISH 0x20
#define DRM_I915_GEM_SET_TILING 0x21
#define DRM_I915_GEM_GET_TILING 0x22
#define DRM_I915_GEM_GET_APERTURE 0x23
#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)
@@ -190,6 +191,7 @@ typedef struct _drm_i915_sarea {
#define DRM_IOCTL_I915_GEM_SW_FINISH DRM_IOW (DRM_COMMAND_BASE + DRM_I915_GEM_SW_FINISH, struct drm_i915_gem_sw_finish)
#define DRM_IOCTL_I915_GEM_SET_TILING DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_SET_TILING, struct drm_i915_gem_set_tiling)
#define DRM_IOCTL_I915_GEM_GET_TILING DRM_IOWR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_TILING, struct drm_i915_gem_get_tiling)
#define DRM_IOCTL_I915_GEM_GET_APERTURE DRM_IOR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_APERTURE, struct drm_i915_gem_get_aperture)
/* Allow drivers to submit batchbuffers directly to hardware, relying
* on the security mechanisms provided by hardware.
@@ -600,4 +602,15 @@ struct drm_i915_gem_get_tiling {
uint32_t swizzle_mode;
};
struct drm_i915_gem_get_aperture {
/** Total size of the aperture used by i915_gem_execbuffer, in bytes */
uint64_t aper_size;
/**
* Available space in the aperture used by i915_gem_execbuffer, in
* bytes
*/
uint64_t aper_available_size;
};
#endif /* _I915_DRM_H_ */