From abee30ca29ec11b62842934de04b5a0033bff21b Mon Sep 17 00:00:00 2001 From: Eric Anholt 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 Link: https://patchwork.freedesktop.org/patch/msgid/20181203222438.25417-5-eric@anholt.net Reviewed-by: Dave Emett (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); }