drm/amdgpu: Fix num_doorbell calculation issue

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When paging queue is enabled, it use the second page of doorbell.
The AMDGPU_DOORBELL64_MAX_ASSIGNMENT definition assumes all the
kernel doorbells are in the first page. So with paging queue enabled,
the total kernel doorbell range should be original num_doorbell plus
one page (0x400 in dword), not *2.

Signed-off-by: Oak Zeng <ozeng@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Oak Zeng 2018-11-30 09:33:02 -06:00 • committed by Alex Deucher

parent 082f0f21f7

commit 88dc26e46b

1 changed files with 5 additions and 2 deletions

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

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