From 09727bc2e979da872d2e10d2b4208cae0576d2b0 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexdeucher@gmail.com>
Date: Wed, 27 Oct 2010 01:02:35 -0400
Subject: [PATCH] drm/radeon/kms: fix handling of tex lookup disable in cs
checker on r2xx
commit 43b93fbffc2c080dba2e84df6fce8d7e6c0a2581 upstream.
There are cases when multiple texture units have to be enabled,
but not actually used to sample. This patch checks to see if
the lookup_disable bit is set and if so, skips the texture check.
Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=25544
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/gpu/drm/radeon/r100.c | 3 +++
drivers/gpu/drm/radeon/r100_track.h | 1 +
drivers/gpu/drm/radeon/r200.c | 2 ++
drivers/gpu/drm/radeon/radeon_reg.h | 1 +
4 files changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/radeon/r100.c b/drivers/gpu/drm/radeon/r100.c
index a20fe2376d66..0ba4163ee0a4 100644
--- a/drivers/gpu/drm/radeon/r100.c
+++ b/drivers/gpu/drm/radeon/r100.c
@@ -3228,6 +3228,8 @@ static int r100_cs_track_texture_check(struct radeon_device *rdev,
for (u = 0; u < track->num_texture; u++) {
if (!track->textures[u].enabled)
continue;
+ if (track->textures[u].lookup_disable)
+ continue;
robj = track->textures[u].robj;
if (robj == NULL) {
DRM_ERROR("No texture bound to unit %u\n", u);
@@ -3462,6 +3464,7 @@ void r100_cs_track_clear(struct radeon_device *rdev, struct r100_cs_track *track
track->textures[i].robj = NULL;
/* CS IB emission code makes sure texture unit are disabled */
track->textures[i].enabled = false;
+ track->textures[i].lookup_disable = false;
track->textures[i].roundup_w = true;
track->textures[i].roundup_h = true;
if (track->separate_cube)
diff --git a/drivers/gpu/drm/radeon/r100_track.h b/drivers/gpu/drm/radeon/r100_track.h
index f47cdca1c004..af65600e6564 100644
--- a/drivers/gpu/drm/radeon/r100_track.h
+++ b/drivers/gpu/drm/radeon/r100_track.h
@@ -46,6 +46,7 @@ struct r100_cs_track_texture {
unsigned height_11;
bool use_pitch;
bool enabled;
+ bool lookup_disable;
bool roundup_w;
bool roundup_h;
unsigned compress_format;
diff --git a/drivers/gpu/drm/radeon/r200.c b/drivers/gpu/drm/radeon/r200.c
index 0266d72e0a4c..d2408c395619 100644
--- a/drivers/gpu/drm/radeon/r200.c
+++ b/drivers/gpu/drm/radeon/r200.c
@@ -447,6 +447,8 @@ int r200_packet0_check(struct radeon_cs_parser *p,
track->textures[i].width = 1 << ((idx_value >> RADEON_TXFORMAT_WIDTH_SHIFT) & RADEON_TXFORMAT_WIDTH_MASK);
track->textures[i].height = 1 << ((idx_value >> RADEON_TXFORMAT_HEIGHT_SHIFT) & RADEON_TXFORMAT_HEIGHT_MASK);
}
+ if (idx_value & R200_TXFORMAT_LOOKUP_DISABLE)
+ track->textures[i].lookup_disable = true;
switch ((idx_value & RADEON_TXFORMAT_FORMAT_MASK)) {
case R200_TXFORMAT_I8:
case R200_TXFORMAT_RGB332:
diff --git a/drivers/gpu/drm/radeon/radeon_reg.h b/drivers/gpu/drm/radeon/radeon_reg.h
index c332f46340d5..64928814de53 100644
--- a/drivers/gpu/drm/radeon/radeon_reg.h
+++ b/drivers/gpu/drm/radeon/radeon_reg.h
@@ -2836,6 +2836,7 @@
# define R200_TXFORMAT_ST_ROUTE_STQ5 (5 << 24)
# define R200_TXFORMAT_ST_ROUTE_MASK (7 << 24)
# define R200_TXFORMAT_ST_ROUTE_SHIFT 24
+# define R200_TXFORMAT_LOOKUP_DISABLE (1 << 27)
# define R200_TXFORMAT_ALPHA_MASK_ENABLE (1 << 28)
# define R200_TXFORMAT_CHROMA_KEY_ENABLE (1 << 29)
# define R200_TXFORMAT_CUBIC_MAP_ENABLE (1 << 30)
--
2.34.1