diff options
| author | Trigger Huang <Trigger.Huang@amd.com> | 2019-04-30 22:38:51 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-05-06 09:36:34 -0500 |
| commit | 74dcfe74b4ef6cd8f219c42c4ea4df0310c78b33 (patch) | |
| tree | 372aa4491ff5a0d2692e1e3d78a43b13a5a6aa4a /drivers/gpu/drm/amd/amdgpu/vega10_ih.c | |
| parent | bdb1ccb080dafc1b4224873a5b759ff85a7d1c10 (diff) | |
drm/amdgpu: Rearm IRQ in Vega10 SR-IOV if IRQ lost
In Multi-VFs stress test, sometimes we see IRQ lost when running
benchmark, just rearm it.
Signed-off-by: Trigger Huang <Trigger.Huang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/vega10_ih.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c index 1b2f69a9a24e..8d89ab7f0ae8 100644 --- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c @@ -31,7 +31,7 @@ #include "soc15_common.h" #include "vega10_ih.h" - +#define MAX_REARM_RETRY 10 static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev); @@ -382,6 +382,38 @@ static void vega10_ih_decode_iv(struct amdgpu_device *adev, } /** + * vega10_ih_irq_rearm - rearm IRQ if lost + * + * @adev: amdgpu_device pointer + * + */ +static void vega10_ih_irq_rearm(struct amdgpu_device *adev, + struct amdgpu_ih_ring *ih) +{ + uint32_t reg_rptr = 0; + uint32_t v = 0; + uint32_t i = 0; + + if (ih == &adev->irq.ih) + reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR); + else if (ih == &adev->irq.ih1) + reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING1); + else if (ih == &adev->irq.ih2) + reg_rptr = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_RB_RPTR_RING2); + else + return; + + /* Rearm IRQ / re-wwrite doorbell if doorbell write is lost */ + for (i = 0; i < MAX_REARM_RETRY; i++) { + v = RREG32_NO_KIQ(reg_rptr); + if ((v < ih->ring_size) && (v != ih->rptr)) + WDOORBELL32(ih->doorbell_index, ih->rptr); + else + break; + } +} + +/** * vega10_ih_set_rptr - set the IH ring buffer rptr * * @adev: amdgpu_device pointer @@ -395,6 +427,9 @@ static void vega10_ih_set_rptr(struct amdgpu_device *adev, /* XXX check if swapping is necessary on BE */ *ih->rptr_cpu = ih->rptr; WDOORBELL32(ih->doorbell_index, ih->rptr); + + if (amdgpu_sriov_vf(adev)) + vega10_ih_irq_rearm(adev, ih); } else if (ih == &adev->irq.ih) { WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, ih->rptr); } else if (ih == &adev->irq.ih1) { |