drm/amd/powerplay: add the hw manager for vega20 (v3)

hwmgr is the interface for the driver to setup state
structures which are used by the smu for managing the
power state.

v2: squash in fixes:
- update set_watermarks_for_clocks_ranges to use common code
- drop unsupported apis
- correct MAX_REGULAR_DPM_NUMBER value
- multimonitor fixes
- add check for vbios pptable version
- revise dpm table setup
- init fclk dpm state
- Remove unused definition in vega20_hwmgr
- support power limit setup
- enable vega20 to honour DAL clock limits
- comment out dump_table debugging
v3: switch to SOC15 register access macros

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 212 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_thermal.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_thermal.c
new file mode 100644
index 000000000000..2984ddd5428c
--- /dev/null
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_thermal.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include "vega20_thermal.h"
+#include "vega20_hwmgr.h"
+#include "vega20_smumgr.h"
+#include "vega20_ppsmc.h"
+#include "vega20_inc.h"
+#include "soc15_common.h"
+#include "pp_debug.h"
+
+static int vega20_get_current_rpm(struct pp_hwmgr *hwmgr, uint32_t *current_rpm)
+{
+	int ret = 0;
+
+	PP_ASSERT_WITH_CODE((ret = smum_send_msg_to_smc(hwmgr,
+				PPSMC_MSG_GetCurrentRpm)) == 0,
+			"Attempt to get current RPM from SMC Failed!",
+			return ret);
+	PP_ASSERT_WITH_CODE((ret = vega20_read_arg_from_smc(hwmgr,
+			current_rpm)) == 0,
+			"Attempt to read current RPM from SMC Failed!",
+			return ret);
+
+	return 0;
+}
+
+int vega20_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
+		struct phm_fan_speed_info *fan_speed_info)
+{
+	memset(fan_speed_info, 0, sizeof(*fan_speed_info));
+	fan_speed_info->supports_percent_read = false;
+	fan_speed_info->supports_percent_write = false;
+	fan_speed_info->supports_rpm_read = true;
+	fan_speed_info->supports_rpm_write = true;
+
+	return 0;
+}
+
+int vega20_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
+{
+	*speed = 0;
+
+	return vega20_get_current_rpm(hwmgr, speed);
+}
+
+/**
+* Reads the remote temperature from the SIslands thermal controller.
+*
+* @param    hwmgr The address of the hardware manager.
+*/
+int vega20_thermal_get_temperature(struct pp_hwmgr *hwmgr)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+	int temp = 0;
+
+	temp = RREG32_SOC15(THM, 0, mmCG_MULT_THERMAL_STATUS);
+
+	temp = (temp & CG_MULT_THERMAL_STATUS__CTF_TEMP_MASK) >>
+			CG_MULT_THERMAL_STATUS__CTF_TEMP__SHIFT;
+
+	temp = temp & 0x1ff;
+
+	temp *= PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
+	return temp;
+}
+
+/**
+* Set the requested temperature range for high and low alert signals
+*
+* @param    hwmgr The address of the hardware manager.
+* @param    range Temperature range to be programmed for
+*           high and low alert signals
+* @exception PP_Result_BadInput if the input data is not valid.
+*/
+static int vega20_thermal_set_temperature_range(struct pp_hwmgr *hwmgr,
+		struct PP_TemperatureRange *range)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+	int low = VEGA20_THERMAL_MINIMUM_ALERT_TEMP *
+			PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
+	int high = VEGA20_THERMAL_MAXIMUM_ALERT_TEMP *
+			PP_TEMPERATURE_UNITS_PER_CENTIGRADES;
+	uint32_t val;
+
+	if (low < range->min)
+		low = range->min;
+	if (high > range->max)
+		high = range->max;
+
+	if (low > high)
+		return -EINVAL;
+
+	val = RREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL);
+
+	val = CGS_REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, MAX_IH_CREDIT, 5);
+	val = CGS_REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, THERM_IH_HW_ENA, 1);
+	val = CGS_REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTH, (high / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
+	val = CGS_REG_SET_FIELD(val, THM_THERMAL_INT_CTRL, DIG_THERM_INTL, (low / PP_TEMPERATURE_UNITS_PER_CENTIGRADES));
+	val = val & (~THM_THERMAL_INT_CTRL__THERM_TRIGGER_MASK_MASK);
+
+	WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_CTRL, val);
+
+	return 0;
+}
+
+/**
+* Enable thermal alerts on the RV770 thermal controller.
+*
+* @param    hwmgr The address of the hardware manager.
+*/
+static int vega20_thermal_enable_alert(struct pp_hwmgr *hwmgr)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+	uint32_t val = 0;
+
+	val |= (1 << THM_THERMAL_INT_ENA__THERM_INTH_CLR__SHIFT);
+	val |= (1 << THM_THERMAL_INT_ENA__THERM_INTL_CLR__SHIFT);
+	val |= (1 << THM_THERMAL_INT_ENA__THERM_TRIGGER_CLR__SHIFT);
+
+	WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, val);
+
+	return 0;
+}
+
+/**
+* Disable thermal alerts on the RV770 thermal controller.
+* @param    hwmgr The address of the hardware manager.
+*/
+int vega20_thermal_disable_alert(struct pp_hwmgr *hwmgr)
+{
+	struct amdgpu_device *adev = hwmgr->adev;
+
+	WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, 0);
+
+	return 0;
+}
+
+/**
+* Uninitialize the thermal controller.
+* Currently just disables alerts.
+* @param    hwmgr The address of the hardware manager.
+*/
+int vega20_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
+{
+	int result = vega20_thermal_disable_alert(hwmgr);
+
+	return result;
+}
+
+/**
+* Set up the fan table to control the fan using the SMC.
+* @param    hwmgr  the address of the powerplay hardware manager.
+* @param    pInput the pointer to input data
+* @param    pOutput the pointer to output data
+* @param    pStorage the pointer to temporary storage
+* @param    Result the last failure code
+* @return   result from set temperature range routine
+*/
+static int vega20_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
+{
+	int ret;
+	struct vega20_hwmgr *data = (struct vega20_hwmgr *)(hwmgr->backend);
+	PPTable_t *table = &(data->smc_state_table.pp_table);
+
+	ret = smum_send_msg_to_smc_with_parameter(hwmgr,
+				PPSMC_MSG_SetFanTemperatureTarget,
+				(uint32_t)table->FanTargetTemperature);
+
+	return ret;
+}
+
+int vega20_start_thermal_controller(struct pp_hwmgr *hwmgr,
+				struct PP_TemperatureRange *range)
+{
+	int ret = 0;
+
+	if (range == NULL)
+		return -EINVAL;
+
+	ret = vega20_thermal_set_temperature_range(hwmgr, range);
+	if (ret)
+		return ret;
+
+	ret = vega20_thermal_enable_alert(hwmgr);
+	if (ret)
+		return ret;
+
+	ret = vega20_thermal_setup_fan_table(hwmgr);
+
+	return ret;
+};