diff options
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 57 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 57 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/soc15.h | 4 |
3 files changed, 116 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c index 27f68d32bfec..321f8a997be8 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c @@ -235,6 +235,29 @@ static void gmc_v10_0_flush_vm_hub(struct amdgpu_device *adev, uint32_t vmid, const unsigned eng = 17; unsigned int i; + spin_lock(&adev->gmc.invalidate_lock); + /* + * It may lose gpuvm invalidate acknowldege state across power-gating + * off cycle, add semaphore acquire before invalidation and semaphore + * release after invalidation to avoid entering power gated state + * to WA the Issue + */ + + /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */ + if (vmhub == AMDGPU_MMHUB_0 || + vmhub == AMDGPU_MMHUB_1) { + for (i = 0; i < adev->usec_timeout; i++) { + /* a read return value of 1 means semaphore acuqire */ + tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_sem + eng); + if (tmp & 0x1) + break; + udelay(1); + } + + if (i >= adev->usec_timeout) + DRM_ERROR("Timeout waiting for sem acquire in VM flush!\n"); + } + WREG32_NO_KIQ(hub->vm_inv_eng0_req + eng, tmp); /* @@ -254,6 +277,17 @@ static void gmc_v10_0_flush_vm_hub(struct amdgpu_device *adev, uint32_t vmid, udelay(1); } + /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */ + if (vmhub == AMDGPU_MMHUB_0 || + vmhub == AMDGPU_MMHUB_1) + /* + * add semaphore release after invalidation, + * write with 0 means semaphore release + */ + WREG32_NO_KIQ(hub->vm_inv_eng0_sem + eng, 0); + + spin_unlock(&adev->gmc.invalidate_lock); + if (i < adev->usec_timeout) return; @@ -338,6 +372,20 @@ static uint64_t gmc_v10_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring, uint32_t req = gmc_v10_0_get_invalidate_req(vmid, 0); unsigned eng = ring->vm_inv_eng; + /* + * It may lose gpuvm invalidate acknowldege state across power-gating + * off cycle, add semaphore acquire before invalidation and semaphore + * release after invalidation to avoid entering power gated state + * to WA the Issue + */ + + /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */ + if (ring->funcs->vmhub == AMDGPU_MMHUB_0 || + ring->funcs->vmhub == AMDGPU_MMHUB_1) + /* a read return value of 1 means semaphore acuqire */ + amdgpu_ring_emit_reg_wait(ring, + hub->vm_inv_eng0_sem + eng, 0x1, 0x1); + amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_lo32 + (2 * vmid), lower_32_bits(pd_addr)); @@ -348,6 +396,15 @@ static uint64_t gmc_v10_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring, hub->vm_inv_eng0_ack + eng, req, 1 << vmid); + /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */ + if (ring->funcs->vmhub == AMDGPU_MMHUB_0 || + ring->funcs->vmhub == AMDGPU_MMHUB_1) + /* + * add semaphore release after invalidation, + * write with 0 means semaphore release + */ + amdgpu_ring_emit_wreg(ring, hub->vm_inv_eng0_sem + eng, 0); + return pd_addr; } diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 9f2a893871ec..3c355fb5d2b4 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -459,6 +459,29 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid, } spin_lock(&adev->gmc.invalidate_lock); + + /* + * It may lose gpuvm invalidate acknowldege state across power-gating + * off cycle, add semaphore acquire before invalidation and semaphore + * release after invalidation to avoid entering power gated state + * to WA the Issue + */ + + /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */ + if (vmhub == AMDGPU_MMHUB_0 || + vmhub == AMDGPU_MMHUB_1) { + for (j = 0; j < adev->usec_timeout; j++) { + /* a read return value of 1 means semaphore acuqire */ + tmp = RREG32_NO_KIQ(hub->vm_inv_eng0_sem + eng); + if (tmp & 0x1) + break; + udelay(1); + } + + if (j >= adev->usec_timeout) + DRM_ERROR("Timeout waiting for sem acquire in VM flush!\n"); + } + WREG32_NO_KIQ(hub->vm_inv_eng0_req + eng, tmp); /* @@ -474,7 +497,18 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid, break; udelay(1); } + + /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */ + if (vmhub == AMDGPU_MMHUB_0 || + vmhub == AMDGPU_MMHUB_1) + /* + * add semaphore release after invalidation, + * write with 0 means semaphore release + */ + WREG32_NO_KIQ(hub->vm_inv_eng0_sem + eng, 0); + spin_unlock(&adev->gmc.invalidate_lock); + if (j < adev->usec_timeout) return; @@ -489,6 +523,20 @@ static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring, uint32_t req = gmc_v9_0_get_invalidate_req(vmid, 0); unsigned eng = ring->vm_inv_eng; + /* + * It may lose gpuvm invalidate acknowldege state across power-gating + * off cycle, add semaphore acquire before invalidation and semaphore + * release after invalidation to avoid entering power gated state + * to WA the Issue + */ + + /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */ + if (ring->funcs->vmhub == AMDGPU_MMHUB_0 || + ring->funcs->vmhub == AMDGPU_MMHUB_1) + /* a read return value of 1 means semaphore acuqire */ + amdgpu_ring_emit_reg_wait(ring, + hub->vm_inv_eng0_sem + eng, 0x1, 0x1); + amdgpu_ring_emit_wreg(ring, hub->ctx0_ptb_addr_lo32 + (2 * vmid), lower_32_bits(pd_addr)); @@ -499,6 +547,15 @@ static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct amdgpu_ring *ring, hub->vm_inv_eng0_ack + eng, req, 1 << vmid); + /* TODO: It needs to continue working on debugging with semaphore for GFXHUB as well. */ + if (ring->funcs->vmhub == AMDGPU_MMHUB_0 || + ring->funcs->vmhub == AMDGPU_MMHUB_1) + /* + * add semaphore release after invalidation, + * write with 0 means semaphore release + */ + amdgpu_ring_emit_wreg(ring, hub->vm_inv_eng0_sem + eng, 0); + return pd_addr; } diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.h b/drivers/gpu/drm/amd/amdgpu/soc15.h index 9af6c6ffbfa2..57af489a5de3 100644 --- a/drivers/gpu/drm/amd/amdgpu/soc15.h +++ b/drivers/gpu/drm/amd/amdgpu/soc15.h @@ -28,8 +28,8 @@ #include "nbio_v7_0.h" #include "nbio_v7_4.h" -#define SOC15_FLUSH_GPU_TLB_NUM_WREG 4 -#define SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT 1 +#define SOC15_FLUSH_GPU_TLB_NUM_WREG 6 +#define SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT 3 extern const struct amd_ip_funcs soc15_common_ip_funcs; |