From f3416dc88ad37d94a942eebcb9168838c3846087 Mon Sep 17 00:00:00 2001 From: YuBiao Wang Date: Thu, 10 Nov 2022 14:53:10 +0800 Subject: [PATCH] drm/amdgpu: Stop clearing kiq position during unload Do not clear kiq position in RLC_CP_SCHEDULER so that CP could perform IDLE-SAVE after VF fini. CPG also needs to be active in save command. v2: drop unused variable (Alex) Signed-off-by: YuBiao Wang Reviewed-by: Luben Tuikov Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 16 +++++++--------- drivers/gpu/drm/amd/amdgpu/mes_v11_0.c | 4 +++- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c index 9447999a3a48..9d2c6523f546 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c @@ -4392,7 +4392,6 @@ static int gfx_v11_0_hw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle; int r; - uint32_t tmp; amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0); amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0); @@ -4411,15 +4410,14 @@ static int gfx_v11_0_hw_fini(void *handle) amdgpu_mes_kiq_hw_fini(adev); } - if (amdgpu_sriov_vf(adev)) { - gfx_v11_0_cp_gfx_enable(adev, false); - /* Program KIQ position of RLC_CP_SCHEDULERS during destroy */ - tmp = RREG32_SOC15(GC, 0, regRLC_CP_SCHEDULERS); - tmp &= 0xffffff00; - WREG32_SOC15(GC, 0, regRLC_CP_SCHEDULERS, tmp); - + if (amdgpu_sriov_vf(adev)) + /* Remove the steps disabling CPG and clearing KIQ position, + * so that CP could perform IDLE-SAVE during switch. Those + * steps are necessary to avoid a DMAR error in gfx9 but it is + * not reproduced on gfx11. + */ return 0; - } + gfx_v11_0_cp_enable(adev, false); gfx_v11_0_enable_gui_idle_interrupt(adev, false); diff --git a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c index 1395453a0662..8d9c1e841353 100644 --- a/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mes_v11_0.c @@ -1253,7 +1253,9 @@ static int mes_v11_0_kiq_hw_fini(struct amdgpu_device *adev) if (adev->mes.ring.sched.ready) mes_v11_0_kiq_dequeue_sched(adev); - mes_v11_0_enable(adev, false); + if (!amdgpu_sriov_vf(adev)) + mes_v11_0_enable(adev, false); + return 0; } -- 2.11.0