gpu: nvgpu: Add thermal module support

The following CL contains the following VBIOS thermal table parsing
and PMU interface support.
1) Thermal device table
2) Thermal channel table

JIRA DNVGPU-130

Change-Id: Ie3abab4bf099a022b1b59db96811c2ed44079519
Signed-off-by: Lakshmanan M <lm@nvidia.com>
Reviewed-on: http://git-master/r/1240630
(cherry picked from commit 814962a4be0a8cd0cddc7bc5211c62308ab1fea2)
Reviewed-on: http://git-master/r/1246210
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 247 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/therm/thrmchannel.c b/drivers/gpu/nvgpu/therm/thrmchannel.c
new file mode 100644
index 00000000..015e065b
--- /dev/null
+++ b/drivers/gpu/nvgpu/therm/thrmchannel.c
@@ -0,0 +1,247 @@
+/*
+ * 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.
+ */
+
+#include "gk20a/gk20a.h"
+#include "thrmchannel.h"
+#include "include/bios.h"
+#include "boardobj/boardobjgrp.h"
+#include "boardobj/boardobjgrp_e32.h"
+#include "pmuif/gpmuifboardobj.h"
+#include "pmuif/gpmuifthermsensor.h"
+#include "gm206/bios_gm206.h"
+#include "gk20a/pmu_gk20a.h"
+
+static u32 _therm_channel_pmudatainit_device(struct gk20a *g,
+                        struct boardobj *board_obj_ptr,
+                        struct nv_pmu_boardobj *ppmudata)
+{
+        u32 status = 0;
+        struct therm_channel *pchannel;
+        struct therm_channel_device *ptherm_channel;
+        struct nv_pmu_therm_therm_channel_device_boardobj_set *pset;
+
+        status = boardobj_pmudatainit_super(g, board_obj_ptr, ppmudata);
+        if (status) {
+                gk20a_err(dev_from_gk20a(g),
+                        "error updating pmu boardobjgrp for therm channel 0x%x",
+                        status);
+                status = -ENOMEM;
+                goto done;
+        }
+
+        pchannel = (struct therm_channel *)board_obj_ptr;
+        pset = (struct nv_pmu_therm_therm_channel_device_boardobj_set *)ppmudata;
+        ptherm_channel = (struct therm_channel_device *)board_obj_ptr;
+
+        pset->super.scaling = pchannel->scaling;
+        pset->super.offset = pchannel->offset;
+        pset->super.temp_min = pchannel->temp_min;
+        pset->super.temp_max = pchannel->temp_max;
+
+        pset->therm_dev_idx = ptherm_channel->therm_dev_idx;
+        pset->therm_dev_prov_idx = ptherm_channel->therm_dev_prov_idx;
+
+done:
+        return status;
+}
+static struct boardobj *construct_channel_device(struct gk20a *g,
+                        void *pargs, u16 pargs_size, u8 type)
+{
+        struct boardobj *board_obj_ptr = NULL;
+        struct therm_channel *pchannel;
+        struct therm_channel_device *pchannel_device;
+        u32 status;
+        struct therm_channel_device *therm_device = (struct therm_channel_device*)pargs;
+
+        status = boardobj_construct_super(g, &board_obj_ptr,
+                pargs_size, pargs);
+        if (status)
+                return NULL;
+
+        /* Set Super class interfaces */
+        board_obj_ptr->pmudatainit = _therm_channel_pmudatainit_device;
+
+        pchannel = (struct therm_channel *)board_obj_ptr;
+        pchannel_device = (struct therm_channel_device *)board_obj_ptr;
+
+        pchannel->temp_min = 0;
+        pchannel->temp_max = 0;
+
+        pchannel->scaling = (1 << 8);
+        pchannel->offset = 0;
+
+        pchannel_device->therm_dev_idx = therm_device->therm_dev_idx;
+        pchannel_device->therm_dev_prov_idx = therm_device->therm_dev_prov_idx;
+
+        gk20a_dbg_info(" Done");
+
+        return board_obj_ptr;
+}
+
+static u32 _therm_channel_pmudata_instget(struct gk20a *g,
+                        struct nv_pmu_boardobjgrp *pmuboardobjgrp,
+                        struct nv_pmu_boardobj **ppboardobjpmudata,
+                        u8 idx)
+{
+        struct nv_pmu_therm_therm_channel_boardobj_grp_set *pgrp_set =
+                (struct nv_pmu_therm_therm_channel_boardobj_grp_set *)
+                pmuboardobjgrp;
+
+        gk20a_dbg_info("");
+
+        /*check whether pmuboardobjgrp has a valid boardobj in index*/
+        if (((u32)BIT(idx) &
+                        pgrp_set->hdr.data.super.obj_mask.super.data[0]) == 0)
+                return -EINVAL;
+
+        *ppboardobjpmudata = (struct nv_pmu_boardobj *)
+                &pgrp_set->objects[idx].data.board_obj;
+
+        gk20a_dbg_info(" Done");
+
+        return 0;
+}
+
+static u32 devinit_get_therm_channel_table(struct gk20a *g,
+                                struct therm_channels *pthermchannelobjs)
+{
+        u32 status = 0;
+        u8 *therm_channel_table_ptr = NULL;
+        u8 *curr_therm_channel_table_ptr = NULL;
+        struct boardobj *boardobj;
+        struct therm_channel_1x_header therm_channel_table_header = { 0 };
+        struct therm_channel_1x_entry *therm_channel_table_entry = NULL;
+        u32 index;
+        u32 obj_index = 0;
+        u16 therm_channel_size = 0;
+        union {
+                struct boardobj boardobj;
+                struct therm_channel therm_channel;
+                struct therm_channel_device device;
+        } therm_channel_data;
+
+        gk20a_dbg_info("");
+
+        if (g->ops.bios.get_perf_table_ptrs) {
+                therm_channel_table_ptr = (u8 *)g->ops.bios.get_perf_table_ptrs(g,
+                                g->bios.perf_token, THERMAL_CHANNEL_TABLE);
+                if (therm_channel_table_ptr == NULL) {
+                        status = -EINVAL;
+                        goto done;
+                }
+        }
+
+        memcpy(&therm_channel_table_header, therm_channel_table_ptr,
+                VBIOS_THERM_CHANNEL_1X_HEADER_SIZE_09);
+
+        if (therm_channel_table_header.version !=
+                        VBIOS_THERM_CHANNEL_VERSION_1X) {
+                status = -EINVAL;
+                goto done;
+        }
+
+        if (therm_channel_table_header.header_size <
+                        VBIOS_THERM_CHANNEL_1X_HEADER_SIZE_09) {
+                status = -EINVAL;
+                goto done;
+        }
+
+        curr_therm_channel_table_ptr = (therm_channel_table_ptr +
+                VBIOS_THERM_CHANNEL_1X_HEADER_SIZE_09);
+
+        for (index = 0; index < therm_channel_table_header.num_table_entries;
+                index++) {
+                therm_channel_table_entry = (struct therm_channel_1x_entry *)
+                        (curr_therm_channel_table_ptr +
+                                (therm_channel_table_header.table_entry_size * index));
+
+                if (therm_channel_table_entry->class_id !=
+                                NV_VBIOS_THERM_CHANNEL_1X_ENTRY_CLASS_DEVICE) {
+                        continue;
+                }
+
+                therm_channel_data.device.therm_dev_idx = therm_channel_table_entry->param0;
+                therm_channel_data.device.therm_dev_prov_idx = therm_channel_table_entry->param1;
+
+                therm_channel_size = sizeof(struct therm_channel_device);
+                therm_channel_data.boardobj.type = CTRL_THERMAL_THERM_CHANNEL_CLASS_DEVICE;
+
+                boardobj = construct_channel_device(g, &therm_channel_data,
+                                        therm_channel_size, therm_channel_data.boardobj.type);
+
+                if (!boardobj) {
+                        gk20a_err(dev_from_gk20a(g),
+                                "unable to create thermal device for %d type %d",
+                                index, therm_channel_data.boardobj.type);
+                        status = -EINVAL;
+                        goto done;
+                }
+
+                status = boardobjgrp_objinsert(&pthermchannelobjs->super.super,
+                                boardobj, obj_index);
+
+                if (status) {
+                        gk20a_err(dev_from_gk20a(g),
+                        "unable to insert thermal device boardobj for %d", index);
+                        status = -EINVAL;
+                        goto done;
+                }
+
+                ++obj_index;
+        }
+
+done:
+        gk20a_dbg_info(" done status %x", status);
+        return status;
+}
+
+u32 therm_channel_sw_setup(struct gk20a *g)
+{
+        u32 status;
+        struct boardobjgrp *pboardobjgrp = NULL;
+        struct therm_channels *pthermchannelobjs;
+
+        /* Construct the Super Class and override the Interfaces */
+        status = boardobjgrpconstruct_e32(&g->therm_pmu.therm_channelobjs.super);
+        if (status) {
+                gk20a_err(dev_from_gk20a(g),
+                          "error creating boardobjgrp for therm devices, status - 0x%x",
+                          status);
+                goto done;
+        }
+
+        pboardobjgrp = &g->therm_pmu.therm_channelobjs.super.super;
+        pthermchannelobjs = &(g->therm_pmu.therm_channelobjs);
+
+        /* Override the Interfaces */
+        pboardobjgrp->pmudatainstget = _therm_channel_pmudata_instget;
+
+        status = devinit_get_therm_channel_table(g, pthermchannelobjs);
+        if (status)
+                goto done;
+
+        BOARDOBJGRP_PMU_CONSTRUCT(pboardobjgrp, THERM, THERM_CHANNEL);
+
+        status = BOARDOBJGRP_PMU_CMD_GRP_SET_CONSTRUCT(g, pboardobjgrp,
+                        therm, THERM, therm_channel, THERM_CHANNEL);
+        if (status) {
+                gk20a_err(dev_from_gk20a(g),
+                          "error constructing PMU_BOARDOBJ_CMD_GRP_SET interface - 0x%x",
+                          status);
+                goto done;
+        }
+
+done:
+        gk20a_dbg_info(" done status %x", status);
+        return status;
+}