diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/navi10_ih.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c index cf557a428298..e08245a446fc 100644 --- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c @@ -32,6 +32,7 @@ #include "soc15_common.h" #include "navi10_ih.h" +#define MAX_REARM_RETRY 10 static void navi10_ih_set_interrupt_funcs(struct amdgpu_device *adev); @@ -284,6 +285,38 @@ static void navi10_ih_decode_iv(struct amdgpu_device *adev, } /** + * navi10_ih_irq_rearm - rearm IRQ if lost + * + * @adev: amdgpu_device pointer + * + */ +static void navi10_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-write 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; + } +} + +/** * navi10_ih_set_rptr - set the IH ring buffer rptr * * @adev: amdgpu_device pointer @@ -297,6 +330,9 @@ static void navi10_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)) + navi10_ih_irq_rearm(adev, ih); } else WREG32_SOC15(OSSSYS, 0, mmIH_RB_RPTR, ih->rptr); } |