From f1aa7e082e56f9c9ea8c0a6b7a0d538dcba9321d Mon Sep 17 00:00:00 2001 From: Chunming Zhou Date: Tue, 28 Jun 2016 10:38:50 +0800 Subject: [PATCH] drm/amdgpu: stop/resume fb access when gpu reset V3 MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Chunming Zhou Reviewed-by: Christian König (V1) Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 153d0ca23ea3..660d04a9a9ac 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1969,6 +1969,13 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev) } retry: + /* Disable fb access */ + if (adev->mode_info.num_crtc) { + struct amdgpu_mode_mc_save save; + amdgpu_display_stop_mc_access(adev, &save); + amdgpu_wait_for_idle(adev, AMD_IP_BLOCK_TYPE_GMC); + } + r = amdgpu_asic_reset(adev); /* post card */ amdgpu_atom_asic_init(adev->mode_info.atom_context); -- 2.30.2