Files
kernel_arpi/drivers/gpu/drm/amd/amdgpu
Haohui Mai 7719a8044b drm/amdgpu/sdma: Fix incorrect calculations of the wptr of the doorbells
[ Upstream commit 7dba6e838e741caadcf27ef717b6dcb561e77f89 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-09 10:22:34 +02:00
..
2021-05-19 23:50:27 -04:00
2021-06-30 00:18:23 -04:00
2022-04-20 09:34:14 +02:00
2021-05-19 23:50:27 -04:00