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Acked-by: Alex Deucher <alexander.deucher@xxxxxxx> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Tiecheng Zhou <Tiecheng.Zhou@xxxxxxx>
Sent: Thursday, December 6, 2018 9:11:49 PM To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx Cc: Zhou, Tiecheng Subject: [PATCH] drm/amdgpu: bypass RLC init under sriov for Tonga SWDEV-173384: vm-mix reboot (4 VMs) fail on Tonga under sriov
Phenomena: there is compute_1.3.1 ring test fail on one VM when it starts to do hw_init after it is rebooted Root cause: RLC will go wrong in soft_reset under sriov Workaround: init RLC csb, and skip RLC stop, reset, start this is because GIM has already done full initialization on RLC refer to 'commit cfee05bc9057 ("drm/amdgpu:bypass RLC init for SRIOV")' and 'commit f840cc5f8447 ("drm/amdgpu/sriov:init csb for gfxv9")' Signed-off-by: Tiecehng Zhou <Tiecheng.Zhou@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c index 1454fc3..a9c853a 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c @@ -4068,6 +4068,11 @@ static void gfx_v8_0_rlc_start(struct amdgpu_device *adev) static int gfx_v8_0_rlc_resume(struct amdgpu_device *adev) { + if (amdgpu_sriov(adev)) { + gfx_v8_0_init_csb(adev); + return 0; + } + adev->gfx.rlc.funcs->stop(adev); adev->gfx.rlc.funcs->reset(adev); gfx_v8_0_init_pg(adev); -- 2.7.4 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx |
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