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authorTakashi Iwai <tiwai@suse.de>2025-12-01 16:25:31 +0100
committerTakashi Iwai <tiwai@suse.de>2025-12-01 16:25:31 +0100
commit72987d2ddc7e4d883d23be87eb858a003b81e2e0 (patch)
tree9d7120886e71d3ec864f8967e3f25c7bcae6bcd9 /include/uapi/drm/drm_fourcc.h
parentb72a6ddf6af225957d4b36f858d2a67b2e31fab6 (diff)
parent324f3e03e8a85931ce0880654e3c3eb38b0f0bba (diff)
Merge branch 'for-linus' into for-next
Pull remaining 6.18-devel changes. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/uapi/drm/drm_fourcc.h')
-rw-r--r--include/uapi/drm/drm_fourcc.h25
1 files changed, 16 insertions, 9 deletions
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index ea91aa8afde9..e527b24bd824 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -979,14 +979,20 @@ extern "C" {
* 2 = Gob Height 8, Turing+ Page Kind mapping
* 3 = Reserved for future use.
*
- * 22:22 s Sector layout. On Tegra GPUs prior to Xavier, there is a further
- * bit remapping step that occurs at an even lower level than the
- * page kind and block linear swizzles. This causes the layout of
- * surfaces mapped in those SOC's GPUs to be incompatible with the
- * equivalent mapping on other GPUs in the same system.
- *
- * 0 = Tegra K1 - Tegra Parker/TX2 Layout.
- * 1 = Desktop GPU and Tegra Xavier+ Layout
+ * 22:22 s Sector layout. There is a further bit remapping step that occurs
+ * 26:27 at an even lower level than the page kind and block linear
+ * swizzles. This causes the bit arrangement of surfaces in memory
+ * to differ subtly, and prevents direct sharing of surfaces between
+ * GPUs with different layouts.
+ *
+ * 0 = Tegra K1 - Tegra Parker/TX2 Layout
+ * 1 = Pre-GB20x, GB20x 32+ bpp, GB10, Tegra Xavier-Orin Layout
+ * 2 = GB20x(Blackwell 2)+ 8 bpp surface layout
+ * 3 = GB20x(Blackwell 2)+ 16 bpp surface layout
+ * 4 = Reserved for future use.
+ * 5 = Reserved for future use.
+ * 6 = Reserved for future use.
+ * 7 = Reserved for future use.
*
* 25:23 c Lossless Framebuffer Compression type.
*
@@ -1001,7 +1007,7 @@ extern "C" {
* 6 = Reserved for future use
* 7 = Reserved for future use
*
- * 55:25 - Reserved for future use. Must be zero.
+ * 55:28 - Reserved for future use. Must be zero.
*/
#define DRM_FORMAT_MOD_NVIDIA_BLOCK_LINEAR_2D(c, s, g, k, h) \
fourcc_mod_code(NVIDIA, (0x10 | \
@@ -1009,6 +1015,7 @@ extern "C" {
(((k) & 0xff) << 12) | \
(((g) & 0x3) << 20) | \
(((s) & 0x1) << 22) | \
+ (((s) & 0x6) << 25) | \
(((c) & 0x7) << 23)))
/* To grandfather in prior block linear format modifiers to the above layout,