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drm/amdgpu: stop/resume fb access when gpu reset V3
V2: Add wait_for_mc_idle after stopping fb access V3: 1. Remove resume fb access since there is no need to do that for gpu reset. 2. Move stop fb access to amdgpu_gpu_reset function, since it's the same for all asics. Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> (V1) Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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@ -1969,6 +1969,13 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
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}
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retry:
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/* Disable fb access */
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if (adev->mode_info.num_crtc) {
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struct amdgpu_mode_mc_save save;
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amdgpu_display_stop_mc_access(adev, &save);
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amdgpu_wait_for_idle(adev, AMD_IP_BLOCK_TYPE_GMC);
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}
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r = amdgpu_asic_reset(adev);
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/* post card */
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amdgpu_atom_asic_init(adev->mode_info.atom_context);
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