From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>, Aric Cyr <Aric.Cyr@amd.com>,
Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>,
amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
Alex Deucher <alexander.deucher@amd.com>,
Josip Pavic <Josip.Pavic@amd.com>
Subject: [PATCH AUTOSEL 5.4 31/35] drm/amd/display: fix dcc swath size calculations on dcn1
Date: Sun, 15 Mar 2020 22:34:07 -0400 [thread overview]
Message-ID: <20200316023411.1263-31-sashal@kernel.org> (raw)
In-Reply-To: <20200316023411.1263-1-sashal@kernel.org>
From: Josip Pavic <Josip.Pavic@amd.com>
[ Upstream commit a0275dfc82c9034eefbeffd556cca6dd239d7925 ]
[Why]
Swath sizes are being calculated incorrectly. The horizontal swath size
should be the product of block height, viewport width, and bytes per
element, but the calculation uses viewport height instead of width. The
vertical swath size is similarly incorrectly calculated. The effect of
this is that we report the wrong DCC caps.
[How]
Use viewport width in the horizontal swath size calculation and viewport
height in the vertical swath size calculation.
Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
index a02c10e23e0d6..d163388c99a06 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
@@ -840,8 +840,8 @@ static void hubbub1_det_request_size(
hubbub1_get_blk256_size(&blk256_width, &blk256_height, bpe);
- swath_bytes_horz_wc = height * blk256_height * bpe;
- swath_bytes_vert_wc = width * blk256_width * bpe;
+ swath_bytes_horz_wc = width * blk256_height * bpe;
+ swath_bytes_vert_wc = height * blk256_width * bpe;
*req128_horz_wc = (2 * swath_bytes_horz_wc <= detile_buf_size) ?
false : /* full 256B request */
--
2.20.1
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prev parent reply other threads:[~2020-03-16 2:34 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200316023411.1263-1-sashal@kernel.org>
2020-03-16 2:34 ` [PATCH AUTOSEL 5.4 29/35] drm/amdgpu: clean wptr on wb when gpu recovery Sasha Levin
2020-03-16 2:34 ` [PATCH AUTOSEL 5.4 30/35] drm/amd/display: Clear link settings on MST disable connector Sasha Levin
2020-03-16 2:34 ` Sasha Levin [this message]
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