gpu: nvgpu: Add pmgr support

This CL covers the following implementation,
1) Power Sensor Table parsing.
2) Power Topology Table parsing.
3) Add debugfs interface to get the current power(mW), current(mA) and
   voltage(uV) information from PMU.
4) Power Policy Table Parsing
5) Implement PMU boardobj interface for pmgr module.
6) Over current protection.

JIRA DNVGPU-47

Change-Id: I7b1eefacc4f0a9824ab94ec8dcebefe81b7660d3
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Reviewed-on: http://git-master/r/1217189
(cherry picked from commit ecd0b16316cb4110118c6677f5f03e02921c29b6)
Reviewed-on: http://git-master/r/1241953
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 117 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/pmgr/pwrpolicy.h b/drivers/gpu/nvgpu/pmgr/pwrpolicy.h
new file mode 100644
index 00000000..82289137
--- /dev/null
+++ b/drivers/gpu/nvgpu/pmgr/pwrpolicy.h
@@ -0,0 +1,117 @@
+/*
+ * general power channel structures & definitions
+ *
+ * Copyright (c) 2016, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+#ifndef _PWRPOLICY_H_
+#define _PWRPOLICY_H_
+
+#include "boardobj/boardobjgrp.h"
+#include "boardobj/boardobj.h"
+#include "pmuif/gpmuifpmgr.h"
+#include "ctrl/ctrlpmgr.h"
+
+#define PWR_POLICY_EXT_POWER_STATE_ID_COUNT 0x4
+
+enum pwr_policy_limit_id {
+        PWR_POLICY_LIMIT_ID_MIN    = 0x00000000,
+        PWR_POLICY_LIMIT_ID_RATED,
+        PWR_POLICY_LIMIT_ID_MAX,
+        PWR_POLICY_LIMIT_ID_CURR,
+        PWR_POLICY_LIMIT_ID_BATT,
+};
+
+struct pwr_policy {
+        struct boardobj super;
+        u8 ch_idx;
+        u8 num_limit_inputs;
+        u8 limit_unit;
+        s32 limit_delta;
+        u32 limit_min;
+        u32 limit_rated;
+        u32 limit_max;
+        u32 limit_batt;
+        struct ctrl_pmgr_pwr_policy_info_integral integral;
+        struct ctrl_pmgr_pwr_policy_limit_arbitration limit_arb_min;
+        struct ctrl_pmgr_pwr_policy_limit_arbitration limit_arb_rated;
+        struct ctrl_pmgr_pwr_policy_limit_arbitration limit_arb_max;
+        struct ctrl_pmgr_pwr_policy_limit_arbitration limit_arb_batt;
+        struct ctrl_pmgr_pwr_policy_limit_arbitration limit_arb_curr;
+        u8 sample_mult;
+        enum ctrl_pmgr_pwr_policy_filter_type filter_type;
+        union ctrl_pmgr_pwr_policy_filter_param filter_param;
+};
+
+struct pwr_policy_ext_limit {
+        u8 policy_table_idx;
+        u32 limit;
+};
+
+struct pwr_policy_batt_workitem {
+        u32 power_state;
+        bool b_full_deflection;
+};
+
+struct pwr_policy_client_workitem {
+        u32 limit;
+        bool b_pending;
+};
+
+struct pwr_policy_relationship {
+        struct boardobj super;
+        u8 policy_idx;
+};
+
+struct pmgr_pwr_policy {
+        u8 version;
+        bool b_enabled;
+        struct nv_pmu_perf_domain_group_limits global_ceiling;
+        u8 policy_idxs[CTRL_PMGR_PWR_POLICY_IDX_NUM_INDEXES];
+        struct pwr_policy_ext_limit ext_limits[PWR_POLICY_EXT_POWER_STATE_ID_COUNT];
+        s32 ext_power_state;
+        u16 base_sample_period;
+        u16 min_client_sample_period;
+        u8 low_sampling_mult;
+        struct boardobjgrp_e32 pwr_policies;
+        struct boardobjgrp_e32 pwr_policy_rels;
+        struct boardobjgrp_e32 pwr_violations;
+        struct pwr_policy_client_workitem client_work_item;
+};
+
+struct pwr_policy_limit {
+        struct pwr_policy super;
+};
+
+struct pwr_policy_hw_threshold {
+        struct pwr_policy_limit super;
+        u8 threshold_idx;
+        u8 low_threshold_idx;
+        bool b_use_low_threshold;
+        u16 low_threshold_value;
+};
+
+union pwr_policy_data_union {
+        struct boardobj boardobj;
+        struct pwr_policy pwrpolicy;
+        struct pwr_policy_hw_threshold hw_threshold;
+} ;
+
+#define PMGR_GET_PWR_POLICY(g, policy_idx)                                 \
+        ((struct pwr_policy *)BOARDOBJGRP_OBJ_GET_BY_IDX(                                 \
+                &(g->pmgr_pmu.pmgr_policyobjs.pwr_policies.super), (policy_idx)))
+
+#define PMGR_PWR_POLICY_INCREMENT_LIMIT_INPUT_COUNT(ppolicy)                 \
+        ((ppolicy)->num_limit_inputs++)
+
+u32 pmgr_policy_sw_setup(struct gk20a *g);
+
+#endif