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authorThierry Reding <treding@nvidia.com>2014-06-04 10:36:43 +0200
committerThierry Reding <treding@nvidia.com>2014-11-27 17:20:32 +0100
commit5ad2eef6eaed4ef90c25341a1c2278a0df5dafcc (patch)
treeeaefc32a502e047d525ea11f74384ebe8b9c91d8
parent93035cfbebf1344a041b70fbf9f3b89f6542805f (diff)
tegra: Add GET/SET_TILING IOCTLs
Currently the tiling parameters of buffer objects can only be set at allocation time, and only a single tiled mode is supported. This new DRM_TEGRA_GEM_SET_TILING IOCTL allows more modes to be set and also allows the tiling mode to be changed after the allocation. This will enable the Tegra DRM driver to import buffers from a GPU and directly scan them out by configuring the display controller appropriately. To complement this, the DRM_TEGRA_GEM_GET_TILING IOCTL can query the current tiling mode of a buffer object. This is necessary when importing buffers via handle (as is done in Mesa for example) so that userspace can determine the proper parameters for the 2D or 3D engines. Signed-off-by: Thierry Reding <treding@nvidia.com>
-rw-r--r--include/drm/tegra_drm.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/drm/tegra_drm.h b/include/drm/tegra_drm.h
index be91601d..1c291297 100644
--- a/include/drm/tegra_drm.h
+++ b/include/drm/tegra_drm.h
@@ -129,6 +129,27 @@ struct drm_tegra_submit {
__u32 reserved[5]; /* future expansion */
};
+#define DRM_TEGRA_GEM_TILING_MODE_PITCH 0
+#define DRM_TEGRA_GEM_TILING_MODE_TILED 1
+#define DRM_TEGRA_GEM_TILING_MODE_BLOCK 2
+
+struct drm_tegra_gem_set_tiling {
+ /* input */
+ __u32 handle;
+ __u32 mode;
+ __u32 value;
+ __u32 pad;
+};
+
+struct drm_tegra_gem_get_tiling {
+ /* input */
+ __u32 handle;
+ /* output */
+ __u32 mode;
+ __u32 value;
+ __u32 pad;
+};
+
#define DRM_TEGRA_GEM_CREATE 0x00
#define DRM_TEGRA_GEM_MMAP 0x01
#define DRM_TEGRA_SYNCPT_READ 0x02
@@ -139,6 +160,8 @@ struct drm_tegra_submit {
#define DRM_TEGRA_GET_SYNCPT 0x07
#define DRM_TEGRA_SUBMIT 0x08
#define DRM_TEGRA_GET_SYNCPT_BASE 0x09
+#define DRM_TEGRA_GEM_SET_TILING 0x0a
+#define DRM_TEGRA_GEM_GET_TILING 0x0b
#define DRM_IOCTL_TEGRA_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_CREATE, struct drm_tegra_gem_create)
#define DRM_IOCTL_TEGRA_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_MMAP, struct drm_tegra_gem_mmap)
@@ -150,5 +173,7 @@ struct drm_tegra_submit {
#define DRM_IOCTL_TEGRA_GET_SYNCPT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT, struct drm_tegra_get_syncpt)
#define DRM_IOCTL_TEGRA_SUBMIT DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_SUBMIT, struct drm_tegra_submit)
#define DRM_IOCTL_TEGRA_GET_SYNCPT_BASE DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GET_SYNCPT_BASE, struct drm_tegra_get_syncpt_base)
+#define DRM_IOCTL_TEGRA_GEM_SET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_SET_TILING, struct drm_tegra_gem_set_tiling)
+#define DRM_IOCTL_TEGRA_GEM_GET_TILING DRM_IOWR(DRM_COMMAND_BASE + DRM_TEGRA_GEM_GET_TILING, struct drm_tegra_gem_get_tiling)
#endif