drm/amdgpu/sdma: Fix incorrect calculations of the wptr of the doorbells

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This patch fixes the issue where the driver miscomputes the 64-bit
values of the wptr of the SDMA doorbell when initializing the
hardware. SDMA engines v4 and later on have full 64-bit registers for
wptr thus they should be set properly.

Older generation hardwares like CIK / SI have only 16 / 20 / 24bits
for the WPTR, where the calls of lower_32_bits() will be removed in a
following patch.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Haohui Mai <ricetons@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Haohui Mai 2022-04-25 20:41:38 +08:00 • committed by Alex Deucher

parent 9714d357e2

commit 7dba6e838e

3 changed files with 10 additions and 10 deletions

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4

drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c

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8

drivers/gpu/drm/amd/amdgpu/sdma_v5_0.c

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8

drivers/gpu/drm/amd/amdgpu/sdma_v5_2.c

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