kernel/linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c, branch v6.6.93

drm/amdgpu: trigger flr_work if reading pf2vf data failed

2025-05-22T12:12:14+00:00

[ Upstream commit ab66c832847fcdffc97d4591ba5547e3990d9d33 ] if reading pf2vf data failed 30 times continuously, it means something is wrong. Need to trigger flr_work to recover the issue. also use dev_err to print the error message to get which device has issue and add warning message if waiting IDH_FLR_NOTIFICATION_CMPL timeout. Signed-off-by: Zhigang Luo Acked-by: Hawking Zhang Signed-off-by: Alex Deucher Stable-dep-of: d0ce1aaa8531 ("Revert "drm/amd: Stop evicting resources on APUs in suspend"") Signed-off-by: Sasha Levin

drm/amdgpu: Set no_hw_access when VF request full GPU fails

2024-09-12T09:11:36+00:00

[ Upstream commit 33f23fc3155b13c4a96d94a0a22dc26db767440b ] [Why] If VF request full GPU access and the request failed, the VF driver can get stuck accessing registers for an extended period during the unload of KMS. [How] Set no_hw_access flag when VF request for full GPU access fails This prevents further hardware access attempts, avoiding the prolonged stuck state. Signed-off-by: Yifan Zha Acked-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: add skip_hw_access checks for sriov

2024-09-08T05:54:47+00:00

[ Upstream commit b3948ad1ac582f560e1f3aeaecf384619921c48d ] Accessing registers via host is missing the check for skip_hw_access and the lockdep check that comes with it. Signed-off-by: Yunxiang Li Reviewed-by: Christian König Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: avoid reading vf2pf info size from FB

2024-09-08T05:54:37+00:00

[ Upstream commit 3bcc0ee14768d886cedff65da72d83d375a31a56 ] VF can't access FB when host is doing mode1 reset. Using sizeof to get vf2pf info size, instead of reading it from vf2pf header stored in FB. Signed-off-by: Zhigang Luo Reviewed-by: Hawking Zhang Reviewed-by: Lijo Lazar Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: Add lock around VF RLCG interface

2024-08-14T11:58:45+00:00

[ Upstream commit e864180ee49b4d30e640fd1e1d852b86411420c9 ] flush_gpu_tlb may be called from another thread while device_gpu_recover is running. Both of these threads access registers through the VF RLCG interface during VF Full Access. Add a lock around this interface to prevent race conditions between these threads. Signed-off-by: Victor Skvortsov Reviewed-by: Zhigang Luo Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin

drm/amdgpu: Clean up errors in amdgpu_virt.c

2023-08-09T13:43:47+00:00

Fix the following errors reported by checkpatch: ERROR: space required before the open parenthesis '(' Signed-off-by: Ran Sun Signed-off-by: Alex Deucher

drm/amdgpu: load sdma ucode in the guest machine

2023-07-25T17:47:26+00:00

[why] User mode driver need to check the sdma ucode version to see whether the sdma engine supports a new type of PM4 packet. In SRIOV, sdma is loaded by the host. And, there is no way to check the sdma ucode version of CHIP_NAVI12 and CHIP_SIENNA_CICHLID of the host in the guest machine. [how] Load the sdma ucode for CHIP_NAVI12 and CHIP_SIENNA_CICHLID in the guest machine. Signed-off-by: YuanShang Reviewed-By: Horace Chen Signed-off-by: Alex Deucher

drm/amdgpu: set sw state to gfxoff after SR-IOV reset

2023-07-25T17:35:23+00:00

[Why] Current SR-IOV will not set GC to off state, while it is a real GC hard reset. Whthout GFX off flag, driver may do gfxhub invalidation before firmware load and gfxhub gart enable. This operation may cause CP to become busy because GC is not in the right state for invalidation. [How] Add a function for SR-IOV to clean up some sw state before recover. Set adev->gfx.is_poweron to false to prevent gfxhub invalidation before gfx firmware autoload complete. Signed-off-by: Horace Chen Reviewed-by: HaiJun Chang Signed-off-by: Alex Deucher

drm/amdgpu: Add RLCG interface driver implementation for gfx v9.4.3 (v3)

2023-07-18T15:16:41+00:00

Add RLCG interface support for gfx v9.4.3 and multiple XCCs. Do not enable it yet. v2: Fix amdgpu_rlcg_reg_access_ctrl init, add support for multiple XCCs in amdgpu_mm_wreg_mmio_rlc v3: Use GET_INST() when indexing amdgpu_rlcg_reg_access_ctrl Signed-off-by: Victor Lu Reviewed-by: Zhigang Luo Signed-off-by: Alex Deucher

drm/amdgpu: make mcbp a per device setting

2023-06-30T17:12:14+00:00

So we can selectively enable it on certain devices. No intended functional change. Reviewed-and-tested-by: Jiadong Zhu Signed-off-by: Alex Deucher