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drm/amdgpu: disable mcbp if parameter zero is set

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The parameter amdgpu_mcbp shall have priority against the default value
calculated from the chip version.
User could disable mcbp by setting the parameter mcbp as zero.

v2: do not trigger preemption in sw ring muxer when mcbp is disabled.

Signed-off-by: Jiadong Zhu <Jiadong.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jiadong Zhu
2023-08-08 10:59:25 +08:00
committed by Alex Deucher
parent b6360a5ec3
commit 0d6f374c0c
2 changed files with 6 additions and 5 deletions
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9
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -3722,10 +3722,11 @@ static void amdgpu_device_set_mcbp(struct amdgpu_device *adev)
{
if (amdgpu_mcbp == 1)
adev->gfx.mcbp = true;
if ((adev->ip_versions[GC_HWIP][0] >= IP_VERSION(9, 0, 0)) &&
(adev->ip_versions[GC_HWIP][0] < IP_VERSION(10, 0, 0)) &&
adev->gfx.num_gfx_rings)
else if (amdgpu_mcbp == 0)
adev->gfx.mcbp = false;
else if ((adev->ip_versions[GC_HWIP][0] >= IP_VERSION(9, 0, 0)) &&
(adev->ip_versions[GC_HWIP][0] < IP_VERSION(10, 0, 0)) &&
adev->gfx.num_gfx_rings)
adev->gfx.mcbp = true;
if (amdgpu_sriov_vf(adev))