From: Jack Xiao <[email protected]> The trailing fence for ring is used to track the completion of preemption.
Acked-by: Hawking Zhang <[email protected]> Signed-off-by: Jack Xiao <[email protected]> Signed-off-by: Alex Deucher <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 18 +++++++++++++----- drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 10 ++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 4 ++++ 3 files changed, 27 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c index 3a483f7e89c7..cbcaa7c0ae44 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c @@ -707,22 +707,30 @@ static int amdgpu_debugfs_fence_info(struct seq_file *m, void *data) amdgpu_fence_process(ring); seq_printf(m, "--- ring %d (%s) ---\n", i, ring->name); - seq_printf(m, "Last signaled fence 0x%08x\n", + seq_printf(m, "Last signaled fence 0x%08x\n", atomic_read(&ring->fence_drv.last_seq)); - seq_printf(m, "Last emitted 0x%08x\n", + seq_printf(m, "Last emitted 0x%08x\n", ring->fence_drv.sync_seq); + if (ring->funcs->type == AMDGPU_RING_TYPE_GFX || + ring->funcs->type == AMDGPU_RING_TYPE_SDMA) { + seq_printf(m, "Last signaled trailing fence 0x%08x\n", + le32_to_cpu(*ring->trail_fence_cpu_addr)); + seq_printf(m, "Last emitted 0x%08x\n", + ring->trail_seq); + } + if (ring->funcs->type != AMDGPU_RING_TYPE_GFX) continue; /* set in CP_VMID_PREEMPT and preemption occurred */ - seq_printf(m, "Last preempted 0x%08x\n", + seq_printf(m, "Last preempted 0x%08x\n", le32_to_cpu(*(ring->fence_drv.cpu_addr + 2))); /* set in CP_VMID_RESET and reset occurred */ - seq_printf(m, "Last reset 0x%08x\n", + seq_printf(m, "Last reset 0x%08x\n", le32_to_cpu(*(ring->fence_drv.cpu_addr + 4))); /* Both preemption and reset occurred */ - seq_printf(m, "Last both 0x%08x\n", + seq_printf(m, "Last both 0x%08x\n", le32_to_cpu(*(ring->fence_drv.cpu_addr + 6))); } return 0; diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c index ff6976eaa919..233729ed71cc 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c @@ -281,6 +281,16 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring, return r; } + r = amdgpu_device_wb_get(adev, &ring->trail_fence_offs); + if (r) { + dev_err(adev->dev, + "(%d) ring trail_fence_offs wb alloc failed\n", r); + return r; + } + ring->trail_fence_gpu_addr = + adev->wb.gpu_addr + (ring->trail_fence_offs * 4); + ring->trail_fence_cpu_addr = &adev->wb.wb[ring->trail_fence_offs]; + r = amdgpu_device_wb_get(adev, &ring->cond_exe_offs); if (r) { dev_err(adev->dev, "(%d) ring cond_exec_polling wb alloc failed\n", r); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h index 764bf851c1df..0f497fa213aa 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h @@ -206,6 +206,10 @@ struct amdgpu_ring { unsigned fence_offs; uint64_t current_ctx; char name[16]; + u32 trail_seq; + unsigned trail_fence_offs; + u64 trail_fence_gpu_addr; + volatile u32 *trail_fence_cpu_addr; unsigned cond_exe_offs; u64 cond_exe_gpu_addr; volatile u32 *cond_exe_cpu_addr; -- 2.20.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
