openwrt/target/linux/bcm27xx/patches-4.19/950-0498-drm-v3d-Invalidate-the-caches-from-the-outside-in.patch
Adrian Schmutzler 7d7aa2fd92 brcm2708: rename target to bcm27xx
This change makes the names of Broadcom targets consistent by using
the common notation based on SoC/CPU ID (which is used internally
anyway), bcmXXXX instead of brcmXXXX.
This is even used for target TITLE in make menuconfig already,
only the short target name used brcm so far.

Despite, since subtargets range from bcm2708 to bcm2711, it seems
appropriate to use bcm27xx instead of bcm2708 (again, as already done
for BOARDNAME).

This also renames the packages brcm2708-userland and brcm2708-gpu-fw.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-02-14 14:10:51 +01:00

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1.2 KiB
Diff

From 514653cd51ff6bc14268dc0f98ebb37daa8f0e88 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Mon, 3 Dec 2018 14:24:38 -0800
Subject: [PATCH] drm/v3d: Invalidate the caches from the outside in.
This would be a fairly obscure race, but let's make sure we don't ever
lose it.
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20181203222438.25417-6-eric@anholt.net
Reviewed-by: Dave Emett <david.emett@broadcom.com>
(cherry picked from commit aa5beec32e8b78bfcf621e3c3daebfb1644b6365)
---
drivers/gpu/drm/v3d/v3d_gem.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/v3d/v3d_gem.c
+++ b/drivers/gpu/drm/v3d/v3d_gem.c
@@ -171,11 +171,15 @@ v3d_invalidate_slices(struct v3d_dev *v3
void
v3d_invalidate_caches(struct v3d_dev *v3d)
{
+ /* Invalidate the caches from the outside in. That way if
+ * another CL's concurrent use of nearby memory were to pull
+ * an invalidated cacheline back in, we wouldn't leave stale
+ * data in the inner cache.
+ */
v3d_flush_l3(v3d);
-
v3d_invalidate_l2c(v3d, 0);
- v3d_invalidate_slices(v3d, 0);
v3d_flush_l2t(v3d, 0);
+ v3d_invalidate_slices(v3d, 0);
}
static void