From e14fdcd8f1f4125da697433b1744b1e4e4f15b09 Mon Sep 17 00:00:00 2001 From: Vaibhav Kachore Date: Fri, 6 Jul 2018 15:10:03 +0530 Subject: gpu: nvgpu: enable HWPM Mode-E context switch - Write new pm mode to context buffer header. Ucode use this mode to enable mode-e context switch. This is Mode-B context switch of PMs with Mode-E streamout on one context. If this mode is set, Ucode makes sure that Mode-E pipe (perfmons, routers, pma) is idle before it context switches PMs. - This allows us to collect counters in a secure way (i.e. on context basis) with stream out. Bug 2106999 Change-Id: I5a7435f09d1bf053ca428e538b0a57f3a175ac37 Signed-off-by: Vaibhav Kachore Reviewed-on: https://git-master.nvidia.com/r/1760366 Reviewed-by: mobile promotions Tested-by: mobile promotions --- include/uapi/linux/nvgpu.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include/uapi/linux/nvgpu.h') diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h index b85ca7b6..446f5bd3 100644 --- a/include/uapi/linux/nvgpu.h +++ b/include/uapi/linux/nvgpu.h @@ -1286,8 +1286,12 @@ struct nvgpu_dbg_gpu_set_next_stop_trigger_type_args { /* PM Context Switch Mode */ +/*This mode says that the pms are not to be context switched. */ #define NVGPU_DBG_GPU_HWPM_CTXSW_MODE_NO_CTXSW (0x00000000) +/* This mode says that the pms in Mode-B are to be context switched */ #define NVGPU_DBG_GPU_HWPM_CTXSW_MODE_CTXSW (0x00000001) +/* This mode says that the pms in Mode-E (stream out) are to be context switched. */ +#define NVGPU_DBG_GPU_HWPM_CTXSW_MODE_STREAM_OUT_CTXSW (0x00000002) struct nvgpu_dbg_gpu_hwpm_ctxsw_mode_args { __u32 mode; -- cgit v1.2.2