[PATCH 5.12 188/384] drm/amd/display: Align cursor cache address to 2KB
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-05-10 12:22:24
Also in:
lkml
Subsystem:
amd display core, drm drivers, radeon and amdgpu drm drivers, the rest · Maintainers:
Harry Wentland, Leo Li, David Airlie, Simona Vetter, Alex Deucher, Christian König, Linus Torvalds
From: Joshua Aberback <redacted> [ Upstream commit 554ba183b135ef09250b61a202d88512b5bbd03a ] [Why] The registers for the address of the cursor are aligned to 2KB, so all cursor surfaces also need to be aligned to 2KB. Currently, the provided cursor cache surface is not aligned, so we need a workaround until alignment is enforced by the surface provider. [How] - round up surface address to nearest multiple of 2048 - current policy is to provide a much bigger cache size than necessary,so this operation is safe Tested-by: Daniel Wheeler <redacted> Signed-off-by: Joshua Aberback <redacted> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Eryk Brol <redacted> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
index 06dc1e2e8383..07c8d2e2c09c 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_hwseq.c@@ -848,7 +848,7 @@ bool dcn30_apply_idle_power_optimizations(struct dc *dc, bool enable) cmd.mall.cursor_copy_src.quad_part = cursor_attr.address.quad_part; cmd.mall.cursor_copy_dst.quad_part = - plane->address.grph.cursor_cache_addr.quad_part; + (plane->address.grph.cursor_cache_addr.quad_part + 2047) & ~2047; cmd.mall.cursor_width = cursor_attr.width; cmd.mall.cursor_height = cursor_attr.height; cmd.mall.cursor_pitch = cursor_attr.pitch;
@@ -858,8 +858,7 @@ bool dcn30_apply_idle_power_optimizations(struct dc *dc, bool enable) dc_dmub_srv_wait_idle(dc->ctx->dmub_srv); /* Use copied cursor, and it's okay to not switch back */ - cursor_attr.address.quad_part = - plane->address.grph.cursor_cache_addr.quad_part; + cursor_attr.address.quad_part = cmd.mall.cursor_copy_dst.quad_part; dc_stream_set_cursor_attributes(stream, &cursor_attr); }
--
2.30.2