On Tue, Dec 10, 2019 at 10:55:13AM +0800, Zhu, Changfeng wrote:
> From: changzhu <changfeng....@amd.com>
>
> It may cause timeout waiting for sem acquire in VM flush when using
> invalidate semaphore for picasso. So it needs to avoid using invalidate
> semaphore for piasso.
>
> Change-Id: I6dc552bde180919cd5ba6c81c6d9e3f800043b03
> Signed-off-by: changzhu <changfeng....@amd.com>
Reviewed-by: Huang Rui <ray.hu...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 28 +++++++++++++++++++--------
> 1 file changed, 20 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index 231ea9762cb5..601667246a1c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -464,8 +464,11 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device
> *adev, uint32_t vmid,
> */
>
> /* TODO: It needs to continue working on debugging with semaphore for
> GFXHUB as well. */
> - if (vmhub == AMDGPU_MMHUB_0 ||
> - vmhub == AMDGPU_MMHUB_1) {
> + if ((vmhub == AMDGPU_MMHUB_0 ||
> + vmhub == AMDGPU_MMHUB_1) &&
> + (!(adev->asic_type == CHIP_RAVEN &&
> + adev->rev_id < 0x8 &&
> + adev->pdev->device == 0x15d8))) {
> 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);
> @@ -495,8 +498,11 @@ static void gmc_v9_0_flush_gpu_tlb(struct amdgpu_device
> *adev, uint32_t vmid,
> }
>
> /* TODO: It needs to continue working on debugging with semaphore for
> GFXHUB as well. */
> - if (vmhub == AMDGPU_MMHUB_0 ||
> - vmhub == AMDGPU_MMHUB_1)
> + if ((vmhub == AMDGPU_MMHUB_0 ||
> + vmhub == AMDGPU_MMHUB_1) &&
> + (!(adev->asic_type == CHIP_RAVEN &&
> + adev->rev_id < 0x8 &&
> + adev->pdev->device == 0x15d8)))
> /*
> * add semaphore release after invalidation,
> * write with 0 means semaphore release
> @@ -527,8 +533,11 @@ static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct
> amdgpu_ring *ring,
> */
>
> /* 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)
> + if ((ring->funcs->vmhub == AMDGPU_MMHUB_0 ||
> + ring->funcs->vmhub == AMDGPU_MMHUB_1) &&
> + (!(adev->asic_type == CHIP_RAVEN &&
> + adev->rev_id < 0x8 &&
> + adev->pdev->device == 0x15d8)))
> /* a read return value of 1 means semaphore acuqire */
> amdgpu_ring_emit_reg_wait(ring,
> hub->vm_inv_eng0_sem + eng, 0x1, 0x1);
> @@ -544,8 +553,11 @@ static uint64_t gmc_v9_0_emit_flush_gpu_tlb(struct
> amdgpu_ring *ring,
> 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)
> + if ((ring->funcs->vmhub == AMDGPU_MMHUB_0 ||
> + ring->funcs->vmhub == AMDGPU_MMHUB_1) &&
> + (!(adev->asic_type == CHIP_RAVEN &&
> + adev->rev_id < 0x8 &&
> + adev->pdev->device == 0x15d8)))
> /*
> * add semaphore release after invalidation,
> * write with 0 means semaphore release
> --
> 2.17.1
>
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