gpu: nvgpu: Updated RPC to support copyback & callback

- Updated & added new parameter "bool is_copy_back" to
  nvgpu_pmu_rpc_execute() to support copy back processed
  RPC request from PMU to caller by passing parameter value
  true & this blocks method till it receives ACK from PMU
  for requested RPC.
- Added "struct rpc_handler_payload" to hold info
  required for RPC handler like RPC buff address &
  clear memory if copy back is not requested.
- Added define PMU_RPC_EXECUTE_CPB to support to copy back
  processed RPC request from PMU to caller.
- Updated RPC callback handler support, crated memory &
  assigned default handler if callback is not requested
  else use callback parameters data to request to PMU.
- Added define PMU_RPC_EXECUTE_CB to support callback
- Updated pmu_wait_message_cond(), restricted condition
  check to 8-bit instead 32-bit condition check.

Change-Id: Ic05289b074954979fd0102daf5ab806bf1f07b62
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1664962
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/boardobj/boardobjgrp.c b/drivers/gpu/nvgpu/boardobj/boardobjgrp.c
index 9530e460..3249bf32 100644
--- a/drivers/gpu/nvgpu/boardobj/boardobjgrp.c
+++ b/drivers/gpu/nvgpu/boardobj/boardobjgrp.c
@@ -977,7 +977,7 @@ static u32 boardobjgrp_pmucmdsend_rpc(struct gk20a *g,
         status = nvgpu_pmu_rpc_execute(pmu, &(rpc.hdr),
                 (sizeof(rpc) - sizeof(rpc.scratch)),
                 pcmd->dmem_buffer_size,
-                NULL, NULL);
+                NULL, NULL, copy_out);
 
         if (status) {
                 nvgpu_err(g, "Failed to execute RPC, status=0x%x", status);