diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 6518e444bead..c4900471beb0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -319,8 +319,12 @@ uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, { uint32_t ret; - if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && amdgpu_sriov_runtime(adev)) - return amdgpu_kiq_rreg(adev, reg); + if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && amdgpu_sriov_runtime(adev) && + down_read_trylock(&adev->reset_sem)) { + ret = amdgpu_kiq_rreg(adev, reg); + up_read(&adev->reset_sem); + return ret; + } if ((reg * 4) < adev->rmmio_size) ret = readl(((void __iomem *)adev->rmmio) + (reg * 4)); @@ -332,6 +336,7 @@ uint32_t amdgpu_mm_rreg(struct amdgpu_device *adev, uint32_t reg, ret = readl(((void __iomem *)adev->rmmio) + (mmMM_DATA * 4)); spin_unlock_irqrestore(&adev->mmio_idx_lock, flags); } + trace_amdgpu_mm_rreg(adev->pdev->device, reg, ret); return ret; } @@ -409,8 +414,12 @@ static inline void amdgpu_mm_wreg_mmio(struct amdgpu_device *adev, void amdgpu_mm_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v, uint32_t acc_flags) { - if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && amdgpu_sriov_runtime(adev)) - return amdgpu_kiq_wreg(adev, reg, v); + if (!(acc_flags & AMDGPU_REGS_NO_KIQ) && amdgpu_sriov_runtime(adev) && + down_read_trylock(&adev->reset_sem)) { + amdgpu_kiq_wreg(adev, reg, v); + up_read(&adev->reset_sem); + return; + } amdgpu_mm_wreg_mmio(adev, reg, v, acc_flags); } |