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drm/amdgpu: Do not program VF copy regs in mmhub v1.8 under SRIOV (v2)

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MC_VM_AGP_* registers should not be programmed by guest driver.

v2: move early return outside of loop

Signed-off-by: Victor Lu <victorchengchi.lu@amd.com>
Reviewed-by: Samir Dhume <samir.dhume@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Victor Lu 2023-10-04 14:24:15 -04:00 committed by Alex Deucher
parent 1ffa8602e3
commit 0288603040
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/amd/amdgpu/mmhub_v1_8.c
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@ -130,6 +130,9 @@ static void mmhub_v1_8_init_system_aperture_regs(struct amdgpu_device *adev)
uint64_t value;
int i;
if (amdgpu_sriov_vf(adev))
return;
inst_mask = adev->aid_mask;
for_each_inst(i, inst_mask) {
/* Program the AGP BAR */
@ -139,9 +142,6 @@ static void mmhub_v1_8_init_system_aperture_regs(struct amdgpu_device *adev)
WREG32_SOC15(MMHUB, i, regMC_VM_AGP_TOP,
adev->gmc.agp_end >> 24);
if (amdgpu_sriov_vf(adev))
return;
/* Program the system aperture low logical page number. */
WREG32_SOC15(MMHUB, i, regMC_VM_SYSTEM_APERTURE_LOW_ADDR,
min(adev->gmc.fb_start, adev->gmc.agp_start) >> 18);