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drm/amdgpu: Skip setting some regs under Vega10 VF

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For Vega10 SR-IOV VF, skip setting some regs due to:
1, host will program them
2, avoid VF register programming violations

Signed-off-by: Trigger Huang <Trigger.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Trigger Huang
2019-03-04 12:30:58 +08:00
committed by Alex Deucher
parent 7bd877692e
commit 98cad2deaf
5 changed files with 50 additions and 22 deletions
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16
drivers/gpu/drm/amd/amdgpu/soc15.c
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@@ -1024,11 +1024,17 @@ static void soc15_doorbell_range_init(struct amdgpu_device *adev)
int i;
struct amdgpu_ring *ring;
for (i = 0; i < adev->sdma.num_instances; i++) {
ring = &adev->sdma.instance[i].ring;
adev->nbio_funcs->sdma_doorbell_range(adev, i,
ring->use_doorbell, ring->doorbell_index,
adev->doorbell_index.sdma_doorbell_range);
/* Two reasons to skip
* 1, Host driver already programmed them
* 2, To avoid registers program violations in SR-IOV
*/
if (!amdgpu_virt_support_skip_setting(adev)) {
for (i = 0; i < adev->sdma.num_instances; i++) {
ring = &adev->sdma.instance[i].ring;
adev->nbio_funcs->sdma_doorbell_range(adev, i,
ring->use_doorbell, ring->doorbell_index,
adev->doorbell_index.sdma_doorbell_range);
}
}
adev->nbio_funcs->ih_doorbell_range(adev, adev->irq.ih.use_doorbell,