drm/i915: implement drmmode overlay support v4
This implements intel overlay support for kms via a device-specific
ioctl. Thomas Hellstrom brought up the idea of a general ioctl (on
dri-devel). We've reached the conclusion that such an infrastructure
only makes sense when multiple kms overlay implementations exists,
which atm don't (and it doesn't look like this is gonna change).
Open issues:
- Runs in sync with the gpu, i.e. unnecessary waiting. I've decided
to wait on this because the hw tends to hang when changing something
in this area. I left some dummy functions as infrastructure.
- polyphase filtering uses a static table.
- uses uninterruptible sleeps. Unfortunately the alternatives may
unnecessarily wedged the hw if/when we timeout too early (and
userspace only overloaded the batch buffers with stuff worth a few
secs of gpu time).
Changes since v1:
- fix off-by-one misconception on my side. This fixes fullscreen
playback.
Changes since v2:
- add underrun detection as spec'ed for i965.
- flush caches properly, fixing visual corruptions.
Changes since v4:
- fix up cache flushing of overlay memory regs.
- killed require_pipe_a logic - it hangs the chip.
Tested-By: diego.abelenda@gmail.com (on a 865G)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[anholt: Resolved against the MADVISE ioctl going in before this one]
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h
index 7e0cb1d..c900499 100644
--- a/include/drm/i915_drm.h
+++ b/include/drm/i915_drm.h
@@ -186,6 +186,8 @@
#define DRM_I915_GEM_MMAP_GTT 0x24
#define DRM_I915_GET_PIPE_FROM_CRTC_ID 0x25
#define DRM_I915_GEM_MADVISE 0x26
+#define DRM_I915_OVERLAY_PUT_IMAGE 0x27
+#define DRM_I915_OVERLAY_ATTRS 0x28
#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)
@@ -223,6 +225,8 @@
#define DRM_IOCTL_I915_GEM_GET_APERTURE DRM_IOR (DRM_COMMAND_BASE + DRM_I915_GEM_GET_APERTURE, struct drm_i915_gem_get_aperture)
#define DRM_IOCTL_I915_GET_PIPE_FROM_CRTC_ID DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GET_PIPE_FROM_CRTC_ID, struct drm_intel_get_pipe_from_crtc_id)
#define DRM_IOCTL_I915_GEM_MADVISE DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_GEM_MADVISE, struct drm_i915_gem_madvise)
+#define DRM_IOCTL_I915_OVERLAY_PUT_IMAGE DRM_IOW(DRM_COMMAND_BASE + DRM_IOCTL_I915_OVERLAY_ATTRS, struct drm_intel_overlay_put_image)
+#define DRM_IOCTL_I915_OVERLAY_ATTRS DRM_IOWR(DRM_COMMAND_BASE + DRM_I915_OVERLAY_ATTRS, struct drm_intel_overlay_attrs)
/* Allow drivers to submit batchbuffers directly to hardware, relying
* on the security mechanisms provided by hardware.
@@ -266,6 +270,7 @@
#define I915_PARAM_CHIPSET_ID 4
#define I915_PARAM_HAS_GEM 5
#define I915_PARAM_NUM_FENCES_AVAIL 6
+#define I915_PARAM_HAS_OVERLAY 7
typedef struct drm_i915_getparam {
int param;
@@ -686,4 +691,70 @@
__u32 retained;
};
+/* flags */
+#define I915_OVERLAY_TYPE_MASK 0xff
+#define I915_OVERLAY_YUV_PLANAR 0x01
+#define I915_OVERLAY_YUV_PACKED 0x02
+#define I915_OVERLAY_RGB 0x03
+
+#define I915_OVERLAY_DEPTH_MASK 0xff00
+#define I915_OVERLAY_RGB24 0x1000
+#define I915_OVERLAY_RGB16 0x2000
+#define I915_OVERLAY_RGB15 0x3000
+#define I915_OVERLAY_YUV422 0x0100
+#define I915_OVERLAY_YUV411 0x0200
+#define I915_OVERLAY_YUV420 0x0300
+#define I915_OVERLAY_YUV410 0x0400
+
+#define I915_OVERLAY_SWAP_MASK 0xff0000
+#define I915_OVERLAY_NO_SWAP 0x000000
+#define I915_OVERLAY_UV_SWAP 0x010000
+#define I915_OVERLAY_Y_SWAP 0x020000
+#define I915_OVERLAY_Y_AND_UV_SWAP 0x030000
+
+#define I915_OVERLAY_FLAGS_MASK 0xff000000
+#define I915_OVERLAY_ENABLE 0x01000000
+
+struct drm_intel_overlay_put_image {
+ /* various flags and src format description */
+ __u32 flags;
+ /* source picture description */
+ __u32 bo_handle;
+ /* stride values and offsets are in bytes, buffer relative */
+ __u16 stride_Y; /* stride for packed formats */
+ __u16 stride_UV;
+ __u32 offset_Y; /* offset for packet formats */
+ __u32 offset_U;
+ __u32 offset_V;
+ /* in pixels */
+ __u16 src_width;
+ __u16 src_height;
+ /* to compensate the scaling factors for partially covered surfaces */
+ __u16 src_scan_width;
+ __u16 src_scan_height;
+ /* output crtc description */
+ __u32 crtc_id;
+ __u16 dst_x;
+ __u16 dst_y;
+ __u16 dst_width;
+ __u16 dst_height;
+};
+
+/* flags */
+#define I915_OVERLAY_UPDATE_ATTRS (1<<0)
+#define I915_OVERLAY_UPDATE_GAMMA (1<<1)
+struct drm_intel_overlay_attrs {
+ __u32 flags;
+ __u32 color_key;
+ __s32 brightness;
+ __u32 contrast;
+ __u32 saturation;
+ __u32 gamma0;
+ __u32 gamma1;
+ __u32 gamma2;
+ __u32 gamma3;
+ __u32 gamma4;
+ __u32 gamma5;
+};
+
#endif /* _I915_DRM_H_ */
