[PATCH 6.6 238/269] drm/amdgpu: handle gfx12 in amdgpu_display_verify_sizes

[Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>]

6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Marek Olšák <marek.olsak@xxxxxxx>

[ Upstream commit 8dd1426e2c80e32ac1995007330c8f95ffa28ebb ]

It verified GFX9-11 swizzle modes on GFX12, which has undefined behavior.

Signed-off-by: Marek Olšák <marek.olsak@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 27 ++++++++++++++++++++-
 include/uapi/drm/drm_fourcc.h               |  2 ++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 82ad2b01f2e9..5fbb9caa7415 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -1033,6 +1033,30 @@ static int amdgpu_display_verify_sizes(struct amdgpu_framebuffer *rfb)
 			block_width = 256 / format_info->cpp[i];
 			block_height = 1;
 			block_size_log2 = 8;
+		} else if (AMD_FMT_MOD_GET(TILE_VERSION, modifier) >= AMD_FMT_MOD_TILE_VER_GFX12) {
+			int swizzle = AMD_FMT_MOD_GET(TILE, modifier);
+
+			switch (swizzle) {
+			case AMD_FMT_MOD_TILE_GFX12_256B_2D:
+				block_size_log2 = 8;
+				break;
+			case AMD_FMT_MOD_TILE_GFX12_4K_2D:
+				block_size_log2 = 12;
+				break;
+			case AMD_FMT_MOD_TILE_GFX12_64K_2D:
+				block_size_log2 = 16;
+				break;
+			case AMD_FMT_MOD_TILE_GFX12_256K_2D:
+				block_size_log2 = 18;
+				break;
+			default:
+				drm_dbg_kms(rfb->base.dev,
+					    "Gfx12 swizzle mode with unknown block size: %d\n", swizzle);
+				return -EINVAL;
+			}
+
+			get_block_dimensions(block_size_log2, format_info->cpp[i],
+					     &block_width, &block_height);
 		} else {
 			int swizzle = AMD_FMT_MOD_GET(TILE, modifier);
 
@@ -1068,7 +1092,8 @@ static int amdgpu_display_verify_sizes(struct amdgpu_framebuffer *rfb)
 			return ret;
 	}
 
-	if (AMD_FMT_MOD_GET(DCC, modifier)) {
+	if (AMD_FMT_MOD_GET(TILE_VERSION, modifier) <= AMD_FMT_MOD_TILE_VER_GFX11 &&
+	    AMD_FMT_MOD_GET(DCC, modifier)) {
 		if (AMD_FMT_MOD_GET(DCC_RETILE, modifier)) {
 			block_size_log2 = get_dcc_block_size(modifier, false, false);
 			get_block_dimensions(block_size_log2 + 8, format_info->cpp[0],
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index fb3040677815..5eed091d4c29 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -1504,6 +1504,8 @@ drm_fourcc_canonicalize_nvidia_format_mod(__u64 modifier)
  *    6 - 64KB_3D
  *    7 - 256KB_3D
  */
+#define AMD_FMT_MOD_TILE_GFX12_256B_2D 1
+#define AMD_FMT_MOD_TILE_GFX12_4K_2D 2
 #define AMD_FMT_MOD_TILE_GFX12_64K_2D 3
 #define AMD_FMT_MOD_TILE_GFX12_256K_2D 4
 
-- 
2.43.0