From d71d38087ded679f60714dae3a859523a19df04f Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Thu, 24 May 2018 15:25:41 -0700 Subject: gpu: nvgpu: Separate timer from bus Code touching timer registers was combined with bus code. They're two logically separate register spaces, so separate the code accordingly. JIRA NVGPU-588 Change-Id: I40e2925ff156669f41ddc1f2e7714f92a2da367b Signed-off-by: Terje Bergstrom Reviewed-on: https://git-master.nvidia.com/r/1730893 Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/common/ptimer/ptimer.c | 51 ++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 drivers/gpu/nvgpu/common/ptimer/ptimer.c (limited to 'drivers/gpu/nvgpu/common/ptimer/ptimer.c') diff --git a/drivers/gpu/nvgpu/common/ptimer/ptimer.c b/drivers/gpu/nvgpu/common/ptimer/ptimer.c new file mode 100644 index 00000000..d5f9470d --- /dev/null +++ b/drivers/gpu/nvgpu/common/ptimer/ptimer.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include + +#include "gk20a/gk20a.h" + +int nvgpu_get_timestamps_zipper(struct gk20a *g, + u32 source_id, u32 count, + struct nvgpu_cpu_time_correlation_sample *samples) +{ + int err = 0; + unsigned int i = 0; + + if (gk20a_busy(g)) { + nvgpu_err(g, "GPU not powered on\n"); + err = -EINVAL; + goto end; + } + + for (i = 0; i < count; i++) { + err = g->ops.ptimer.read_ptimer(g, &samples[i].gpu_timestamp); + if (err) + return err; + + samples[i].cpu_timestamp = nvgpu_hr_timestamp(); + } + +end: + gk20a_idle(g); + return err; +} -- cgit v1.2.2