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gpu: nvgpu: enable HWPM Mode-E context switch

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- 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 <vkachore@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1760366
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Vaibhav Kachore
2018-07-06 15:10:03 +05:30
committed by mobile promotions
parent 4cd59404a2
commit e14fdcd8f1
13 changed files with 120 additions and 29 deletions
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4
include/uapi/linux/nvgpu.h
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@@ -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;