gpu: nvgpu: gv10x volt rail boardobj changes

- Created volt ops under pmu_ver to support volt_set_voltage,
  volt_get_voltage & volt_send_load_cmd_to_pmu.
- Renamed volt load, set_voltage & get_voltage gp10x method names.
- Added new volt load, set_voltage & get_voltage methods for gv10x
  using RPC & added code to handle ack in pmu_rpc_handler() along
  with struct rail_list changes.
- Updated volt ops of gp106 & gv100 to point to respective methods.
- Added member volt_dev_idx_ipc_vmin & volt_scale_exp_pwr_equ_idx to
  "struct nv_pmu_volt_volt_rail_boardobj_set" & "struct voltage_rail"
  made changes to update members as needed.
- Added member volt_scale_exp_pwr_equ_idx to
  "struct vbios_voltage_rail_table_1x_entry" to read
  value from VBIOS table & update rail boardobj set interface.
- Defines for volt RPC "NV_PMU_RPC_ID_VOLT_*"
- Define struct's volt load, set_voltage & get_voltage to execute
   volt RPC.

Change-Id: I4a41adcf7536468beaa8a73f551b1d608aabd161
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1659728
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 33 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/volt/volt_rail.c b/drivers/gpu/nvgpu/volt/volt_rail.c
index f78fc315..3461653f 100644
--- a/drivers/gpu/nvgpu/volt/volt_rail.c
+++ b/drivers/gpu/nvgpu/volt/volt_rail.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2018, 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"),
@@ -34,8 +34,10 @@ u8 volt_rail_volt_domain_convert_to_idx(struct gk20a *g, u8 volt_domain)
 {
         switch (g->perf_pmu.volt.volt_rail_metadata.volt_domain_hal) {
         case CTRL_VOLT_DOMAIN_HAL_GP10X_SINGLE_RAIL:
-                if (volt_domain == CTRL_BOARDOBJ_IDX_INVALID)
+                switch (volt_domain) {
+                case CTRL_VOLT_DOMAIN_LOGIC:
                         return 0;
+                }
                 break;
         case CTRL_VOLT_DOMAIN_HAL_GP10X_SPLIT_RAIL:
                 switch (volt_domain) {
@@ -63,6 +65,22 @@ u32 volt_rail_volt_dev_register(struct gk20a *g, struct voltage_rail
                         status = -EINVAL;
                         goto exit;
                 }
+        } else if (operation_type ==
+                CTRL_VOLT_VOLT_DEVICE_OPERATION_TYPE_IPC_VMIN) {
+                if (pvolt_rail->volt_dev_idx_ipc_vmin ==
+                        CTRL_BOARDOBJ_IDX_INVALID) {
+                        pvolt_rail->volt_dev_idx_ipc_vmin = volt_dev_idx;
+                        /*
+                        * Exit on purpose as we do not want to register
+                        * IPC_VMIN device against the rail to avoid
+                        * setting current voltage instead of
+                        * IPC Vmin voltage.
+                        */
+                        goto exit;
+                } else {
+                        status = -EINVAL;
+                        goto exit;
+                }
         } else {
                 goto exit;
         }
@@ -136,6 +154,9 @@ static u32 volt_rail_init_pmudata_super(struct gk20a *g,
                         prail->volt_margin_limit_vfe_equ_idx;
         rail_pmu_data->pwr_equ_idx = prail->pwr_equ_idx;
         rail_pmu_data->volt_dev_idx_default = prail->volt_dev_idx_default;
+        rail_pmu_data->volt_scale_exp_pwr_equ_idx =
+                        prail->volt_scale_exp_pwr_equ_idx;
+        rail_pmu_data->volt_dev_idx_ipc_vmin = prail->volt_dev_idx_ipc_vmin;
 
         for (i = 0; i < CTRL_VOLT_RAIL_VOLT_DELTA_MAX_ENTRIES; i++) {
                 rail_pmu_data->volt_delta_uv[i] = prail->volt_delta_uv[i] +
@@ -187,6 +208,8 @@ static struct voltage_rail *construct_volt_rail(struct gk20a *g, void *pargs)
                         ptemp_rail->vmin_limit_vfe_equ_idx;
         board_obj_volt_rail_ptr->volt_margin_limit_vfe_equ_idx =
                         ptemp_rail->volt_margin_limit_vfe_equ_idx;
+        board_obj_volt_rail_ptr->volt_scale_exp_pwr_equ_idx =
+                        ptemp_rail->volt_scale_exp_pwr_equ_idx;
 
         gk20a_dbg_info("Done");
 
@@ -285,6 +308,14 @@ static u32 volt_get_volt_rail_table(struct gk20a *g,
                         (u8)entry.ov_limit_vfe_equ_idx;
 
                 if (header.table_entry_size >=
+                        NV_VBIOS_VOLTAGE_RAIL_1X_ENTRY_SIZE_0C)
+                        rail_type_data.volt_rail.volt_scale_exp_pwr_equ_idx =
+                                (u8)entry.volt_scale_exp_pwr_equ_idx;
+                else
+                        rail_type_data.volt_rail.volt_scale_exp_pwr_equ_idx =
+                                CTRL_BOARDOBJ_IDX_INVALID;
+
+                if (header.table_entry_size >=
                         NV_VBIOS_VOLTAGE_RAIL_1X_ENTRY_SIZE_0B)
                         rail_type_data.volt_rail.volt_margin_limit_vfe_equ_idx =
                                 (u8)entry.volt_margin_limit_vfe_equ_idx;