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 <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>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gv100/hal_gv100.c b/drivers/gpu/nvgpu/gv100/hal_gv100.c
index 07c71a04..c84778dd 100644
--- a/drivers/gpu/nvgpu/gv100/hal_gv100.c
+++ b/drivers/gpu/nvgpu/gv100/hal_gv100.c
@@ -358,6 +358,8 @@ static const struct gpu_ops gv100_ops = {
                 .enable_exceptions = gr_gv11b_enable_exceptions,
                 .get_lrf_tex_ltc_dram_override = get_ecc_override_val,
                 .update_smpc_ctxsw_mode = gr_gk20a_update_smpc_ctxsw_mode,
+                .get_hw_accessor_stream_out_mode =
+                        gr_gv100_get_hw_accessor_stream_out_mode,
                 .update_hwpm_ctxsw_mode = gr_gk20a_update_hwpm_ctxsw_mode,
                 .record_sm_error_state = gv11b_gr_record_sm_error_state,
                 .update_sm_error_state = gv11b_gr_update_sm_error_state,