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drm/amdgpu: support ASPM for some specific ASIC

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Support to program ASPM and LTR for Sienna Cichlid and forward ASIC.
Disable ASPM for Sienna Cichlid and forward ASIC by default.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Likun Gao
2021-02-01 14:44:09 +08:00
committed by Alex Deucher
parent 680602d6c2
commit e1edaeafeb
3 changed files with 124 additions and 6 deletions
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15
drivers/gpu/drm/amd/amdgpu/nv.c
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@@ -468,11 +468,14 @@ static void nv_pcie_gen3_enable(struct amdgpu_device *adev)
static void nv_program_aspm(struct amdgpu_device *adev)
{
if (amdgpu_aspm == 0)
if (amdgpu_aspm != 1)
return;
/* todo */
if ((adev->asic_type >= CHIP_SIENNA_CICHLID) &&
!(adev->flags & AMD_IS_APU) &&
(adev->nbio.funcs->program_aspm))
adev->nbio.funcs->program_aspm(adev);
}
static void nv_enable_doorbell_aperture(struct amdgpu_device *adev,
@@ -798,10 +801,10 @@ static int nv_update_umd_stable_pstate(struct amdgpu_device *adev,
* The ASPM function is not fully enabled and verified on
* Navi yet. Temporarily skip this until ASPM enabled.
*/
#if 0
if (adev->nbio.funcs->enable_aspm)
if ((adev->asic_type >= CHIP_SIENNA_CICHLID) &&
!(adev->flags & AMD_IS_APU) &&
(adev->nbio.funcs->enable_aspm))
adev->nbio.funcs->enable_aspm(adev, !enter);
#endif
return 0;
}