diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0497-drm-v3d-Stop-trying-to-flush-L2C-on-V3D-3.3.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0497-drm-v3d-Stop-trying-to-flush-L2C-on-V3D-3.3.patch | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0497-drm-v3d-Stop-trying-to-flush-L2C-on-V3D-3.3.patch b/target/linux/brcm2708/patches-4.19/950-0497-drm-v3d-Stop-trying-to-flush-L2C-on-V3D-3.3.patch new file mode 100644 index 0000000000..b1094778b5 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0497-drm-v3d-Stop-trying-to-flush-L2C-on-V3D-3.3.patch @@ -0,0 +1,45 @@ +From abee30ca29ec11b62842934de04b5a0033bff21b Mon Sep 17 00:00:00 2001 +From: Eric Anholt <eric@anholt.net> +Date: Mon, 3 Dec 2018 14:24:37 -0800 +Subject: [PATCH] drm/v3d: Stop trying to flush L2C on V3D 3.3+ + +This cache was replaced with the slice accessing the L2T in the newer +generations. Noted by Dave during review. + +Signed-off-by: Eric Anholt <eric@anholt.net> +Link: https://patchwork.freedesktop.org/patch/msgid/20181203222438.25417-5-eric@anholt.net +Reviewed-by: Dave Emett <david.emett@broadcom.com> +(cherry picked from commit 7b9d2fe4350a9c12f66ad8cc78c1098226f6c3c2) +--- + drivers/gpu/drm/v3d/v3d_gem.c | 11 ++++++++--- + 1 file changed, 8 insertions(+), 3 deletions(-) + +--- a/drivers/gpu/drm/v3d/v3d_gem.c ++++ b/drivers/gpu/drm/v3d/v3d_gem.c +@@ -130,10 +130,15 @@ v3d_flush_l3(struct v3d_dev *v3d) + } + } + +-/* Invalidates the (read-only) L2 cache. */ ++/* Invalidates the (read-only) L2C cache. This was the L2 cache for ++ * uniforms and instructions on V3D 3.2. ++ */ + static void +-v3d_invalidate_l2(struct v3d_dev *v3d, int core) ++v3d_invalidate_l2c(struct v3d_dev *v3d, int core) + { ++ if (v3d->ver > 32) ++ return; ++ + V3D_CORE_WRITE(core, V3D_CTL_L2CACTL, + V3D_L2CACTL_L2CCLR | + V3D_L2CACTL_L2CENA); +@@ -168,7 +173,7 @@ v3d_invalidate_caches(struct v3d_dev *v3 + { + v3d_flush_l3(v3d); + +- v3d_invalidate_l2(v3d, 0); ++ v3d_invalidate_l2c(v3d, 0); + v3d_invalidate_slices(v3d, 0); + v3d_flush_l2t(v3d, 0); + } |