diff options
Diffstat (limited to 'drivers/misc/habanalabs/common/hwmon.c')
| -rw-r--r-- | drivers/misc/habanalabs/common/hwmon.c | 934 |
1 files changed, 934 insertions, 0 deletions
diff --git a/drivers/misc/habanalabs/common/hwmon.c b/drivers/misc/habanalabs/common/hwmon.c new file mode 100644 index 000000000..55eb02038 --- /dev/null +++ b/drivers/misc/habanalabs/common/hwmon.c @@ -0,0 +1,934 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Copyright 2016-2019 HabanaLabs, Ltd. + * All Rights Reserved. + */ + +#include "habanalabs.h" + +#include <linux/pci.h> +#include <linux/hwmon.h> + +#define HWMON_NR_SENSOR_TYPES (hwmon_max) + +#ifdef _HAS_HWMON_HWMON_T_ENABLE + +static u32 fixup_flags_legacy_fw(struct hl_device *hdev, enum hwmon_sensor_types type, + u32 cpucp_flags) +{ + u32 flags; + + switch (type) { + case hwmon_temp: + flags = (cpucp_flags << 1) | HWMON_T_ENABLE; + break; + + case hwmon_in: + flags = (cpucp_flags << 1) | HWMON_I_ENABLE; + break; + + case hwmon_curr: + flags = (cpucp_flags << 1) | HWMON_C_ENABLE; + break; + + case hwmon_fan: + flags = (cpucp_flags << 1) | HWMON_F_ENABLE; + break; + + case hwmon_power: + flags = (cpucp_flags << 1) | HWMON_P_ENABLE; + break; + + case hwmon_pwm: + /* enable bit was here from day 1, so no need to adjust */ + flags = cpucp_flags; + break; + + default: + dev_err(hdev->dev, "unsupported h/w sensor type %d\n", type); + flags = cpucp_flags; + break; + } + + return flags; +} + +static u32 fixup_attr_legacy_fw(u32 attr) +{ + return (attr - 1); +} + +#else + +static u32 fixup_flags_legacy_fw(struct hl_device *hdev, enum hwmon_sensor_types type, + u32 cpucp_flags) +{ + return cpucp_flags; +} + +static u32 fixup_attr_legacy_fw(u32 attr) +{ + return attr; +} + +#endif /* !_HAS_HWMON_HWMON_T_ENABLE */ + +static u32 adjust_hwmon_flags(struct hl_device *hdev, enum hwmon_sensor_types type, u32 cpucp_flags) +{ + u32 flags, cpucp_input_val; + bool use_cpucp_enum; + + use_cpucp_enum = (hdev->asic_prop.fw_app_cpu_boot_dev_sts0 & + CPU_BOOT_DEV_STS0_MAP_HWMON_EN) ? true : false; + + /* If f/w is using it's own enum, we need to check if the properties values are aligned. + * If not, it means we need to adjust the values to the new format that is used in the + * kernel since 5.6 (enum values were incremented by 1 by adding a new enable value). + */ + if (use_cpucp_enum) { + switch (type) { + case hwmon_temp: + cpucp_input_val = cpucp_temp_input; + if (cpucp_input_val == hwmon_temp_input) + flags = cpucp_flags; + else + flags = (cpucp_flags << 1) | HWMON_T_ENABLE; + break; + + case hwmon_in: + cpucp_input_val = cpucp_in_input; + if (cpucp_input_val == hwmon_in_input) + flags = cpucp_flags; + else + flags = (cpucp_flags << 1) | HWMON_I_ENABLE; + break; + + case hwmon_curr: + cpucp_input_val = cpucp_curr_input; + if (cpucp_input_val == hwmon_curr_input) + flags = cpucp_flags; + else + flags = (cpucp_flags << 1) | HWMON_C_ENABLE; + break; + + case hwmon_fan: + cpucp_input_val = cpucp_fan_input; + if (cpucp_input_val == hwmon_fan_input) + flags = cpucp_flags; + else + flags = (cpucp_flags << 1) | HWMON_F_ENABLE; + break; + + case hwmon_pwm: + /* enable bit was here from day 1, so no need to adjust */ + flags = cpucp_flags; + break; + + case hwmon_power: + cpucp_input_val = CPUCP_POWER_INPUT; + if (cpucp_input_val == hwmon_power_input) + flags = cpucp_flags; + else + flags = (cpucp_flags << 1) | HWMON_P_ENABLE; + break; + + default: + dev_err(hdev->dev, "unsupported h/w sensor type %d\n", type); + flags = cpucp_flags; + break; + } + } else { + flags = fixup_flags_legacy_fw(hdev, type, cpucp_flags); + } + + return flags; +} + +int hl_build_hwmon_channel_info(struct hl_device *hdev, struct cpucp_sensor *sensors_arr) +{ + u32 num_sensors_for_type, flags, num_active_sensor_types = 0, arr_size = 0, *curr_arr; + u32 sensors_by_type_next_index[HWMON_NR_SENSOR_TYPES] = {0}; + u32 *sensors_by_type[HWMON_NR_SENSOR_TYPES] = {NULL}; + struct hwmon_channel_info **channels_info; + u32 counts[HWMON_NR_SENSOR_TYPES] = {0}; + enum hwmon_sensor_types type; + int rc, i, j; + + for (i = 0 ; i < CPUCP_MAX_SENSORS ; i++) { + type = le32_to_cpu(sensors_arr[i].type); + + if ((type == 0) && (sensors_arr[i].flags == 0)) + break; + + if (type >= HWMON_NR_SENSOR_TYPES) { + dev_err(hdev->dev, "Got wrong sensor type %d from device\n", type); + return -EINVAL; + } + + counts[type]++; + arr_size++; + } + + for (i = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++) { + if (counts[i] == 0) + continue; + + num_sensors_for_type = counts[i] + 1; + dev_dbg(hdev->dev, "num_sensors_for_type %d = %d\n", i, num_sensors_for_type); + + curr_arr = kcalloc(num_sensors_for_type, sizeof(*curr_arr), GFP_KERNEL); + if (!curr_arr) { + rc = -ENOMEM; + goto sensors_type_err; + } + + num_active_sensor_types++; + sensors_by_type[i] = curr_arr; + } + + for (i = 0 ; i < arr_size ; i++) { + type = le32_to_cpu(sensors_arr[i].type); + curr_arr = sensors_by_type[type]; + flags = adjust_hwmon_flags(hdev, type, le32_to_cpu(sensors_arr[i].flags)); + curr_arr[sensors_by_type_next_index[type]++] = flags; + } + + channels_info = kcalloc(num_active_sensor_types + 1, sizeof(struct hwmon_channel_info *), + GFP_KERNEL); + if (!channels_info) { + rc = -ENOMEM; + goto channels_info_array_err; + } + + for (i = 0 ; i < num_active_sensor_types ; i++) { + channels_info[i] = kzalloc(sizeof(*channels_info[i]), GFP_KERNEL); + if (!channels_info[i]) { + rc = -ENOMEM; + goto channel_info_err; + } + } + + for (i = 0, j = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++) { + if (!sensors_by_type[i]) + continue; + + channels_info[j]->type = i; + channels_info[j]->config = sensors_by_type[i]; + j++; + } + + hdev->hl_chip_info->info = (const struct hwmon_channel_info **)channels_info; + + return 0; + +channel_info_err: + for (i = 0 ; i < num_active_sensor_types ; i++) { + if (channels_info[i]) { + kfree(channels_info[i]->config); + kfree(channels_info[i]); + } + } + kfree(channels_info); + +channels_info_array_err: +sensors_type_err: + for (i = 0 ; i < HWMON_NR_SENSOR_TYPES ; i++) + kfree(sensors_by_type[i]); + + return rc; +} + +static int hl_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + bool use_cpucp_enum; + u32 cpucp_attr; + int rc; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + use_cpucp_enum = (hdev->asic_prop.fw_app_cpu_boot_dev_sts0 & + CPU_BOOT_DEV_STS0_MAP_HWMON_EN) ? true : false; + + switch (type) { + case hwmon_temp: + switch (attr) { + case hwmon_temp_input: + cpucp_attr = cpucp_temp_input; + break; + case hwmon_temp_max: + cpucp_attr = cpucp_temp_max; + break; + case hwmon_temp_crit: + cpucp_attr = cpucp_temp_crit; + break; + case hwmon_temp_max_hyst: + cpucp_attr = cpucp_temp_max_hyst; + break; + case hwmon_temp_crit_hyst: + cpucp_attr = cpucp_temp_crit_hyst; + break; + case hwmon_temp_offset: + cpucp_attr = cpucp_temp_offset; + break; + case hwmon_temp_highest: + cpucp_attr = cpucp_temp_highest; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + rc = hl_get_temperature(hdev, channel, cpucp_attr, val); + else + rc = hl_get_temperature(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + case hwmon_in: + switch (attr) { + case hwmon_in_input: + cpucp_attr = cpucp_in_input; + break; + case hwmon_in_min: + cpucp_attr = cpucp_in_min; + break; + case hwmon_in_max: + cpucp_attr = cpucp_in_max; + break; + case hwmon_in_highest: + cpucp_attr = cpucp_in_highest; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + rc = hl_get_voltage(hdev, channel, cpucp_attr, val); + else + rc = hl_get_voltage(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + case hwmon_curr: + switch (attr) { + case hwmon_curr_input: + cpucp_attr = cpucp_curr_input; + break; + case hwmon_curr_min: + cpucp_attr = cpucp_curr_min; + break; + case hwmon_curr_max: + cpucp_attr = cpucp_curr_max; + break; + case hwmon_curr_highest: + cpucp_attr = cpucp_curr_highest; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + rc = hl_get_current(hdev, channel, cpucp_attr, val); + else + rc = hl_get_current(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + case hwmon_fan: + switch (attr) { + case hwmon_fan_input: + cpucp_attr = cpucp_fan_input; + break; + case hwmon_fan_min: + cpucp_attr = cpucp_fan_min; + break; + case hwmon_fan_max: + cpucp_attr = cpucp_fan_max; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + rc = hl_get_fan_speed(hdev, channel, cpucp_attr, val); + else + rc = hl_get_fan_speed(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + case hwmon_pwm: + switch (attr) { + case hwmon_pwm_input: + cpucp_attr = cpucp_pwm_input; + break; + case hwmon_pwm_enable: + cpucp_attr = cpucp_pwm_enable; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + rc = hl_get_pwm_info(hdev, channel, cpucp_attr, val); + else + /* no need for fixup as pwm was aligned from day 1 */ + rc = hl_get_pwm_info(hdev, channel, attr, val); + break; + case hwmon_power: + switch (attr) { + case hwmon_power_input: + cpucp_attr = CPUCP_POWER_INPUT; + break; + case hwmon_power_input_highest: + cpucp_attr = CPUCP_POWER_INPUT_HIGHEST; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + rc = hl_get_power(hdev, channel, cpucp_attr, val); + else + rc = hl_get_power(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + default: + return -EINVAL; + } + return rc; +} + +static int hl_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) +{ + struct hl_device *hdev = dev_get_drvdata(dev); + u32 cpucp_attr; + bool use_cpucp_enum = (hdev->asic_prop.fw_app_cpu_boot_dev_sts0 & + CPU_BOOT_DEV_STS0_MAP_HWMON_EN) ? true : false; + + if (!hl_device_operational(hdev, NULL)) + return -ENODEV; + + switch (type) { + case hwmon_temp: + switch (attr) { + case hwmon_temp_offset: + cpucp_attr = cpucp_temp_offset; + break; + case hwmon_temp_reset_history: + cpucp_attr = cpucp_temp_reset_history; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + hl_set_temperature(hdev, channel, cpucp_attr, val); + else + hl_set_temperature(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + case hwmon_pwm: + switch (attr) { + case hwmon_pwm_input: + cpucp_attr = cpucp_pwm_input; + break; + case hwmon_pwm_enable: + cpucp_attr = cpucp_pwm_enable; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + hl_set_pwm_info(hdev, channel, cpucp_attr, val); + else + /* no need for fixup as pwm was aligned from day 1 */ + hl_set_pwm_info(hdev, channel, attr, val); + break; + case hwmon_in: + switch (attr) { + case hwmon_in_reset_history: + cpucp_attr = cpucp_in_reset_history; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + hl_set_voltage(hdev, channel, cpucp_attr, val); + else + hl_set_voltage(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + case hwmon_curr: + switch (attr) { + case hwmon_curr_reset_history: + cpucp_attr = cpucp_curr_reset_history; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + hl_set_current(hdev, channel, cpucp_attr, val); + else + hl_set_current(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + case hwmon_power: + switch (attr) { + case hwmon_power_reset_history: + cpucp_attr = CPUCP_POWER_RESET_INPUT_HISTORY; + break; + default: + return -EINVAL; + } + + if (use_cpucp_enum) + hl_set_power(hdev, channel, cpucp_attr, val); + else + hl_set_power(hdev, channel, fixup_attr_legacy_fw(attr), val); + break; + default: + return -EINVAL; + } + return 0; +} + +static umode_t hl_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) +{ + switch (type) { + case hwmon_temp: + switch (attr) { + case hwmon_temp_input: + case hwmon_temp_max: + case hwmon_temp_max_hyst: + case hwmon_temp_crit: + case hwmon_temp_crit_hyst: + case hwmon_temp_highest: + return 0444; + case hwmon_temp_offset: + return 0644; + case hwmon_temp_reset_history: + return 0200; + } + break; + case hwmon_in: + switch (attr) { + case hwmon_in_input: + case hwmon_in_min: + case hwmon_in_max: + case hwmon_in_highest: + return 0444; + case hwmon_in_reset_history: + return 0200; + } + break; + case hwmon_curr: + switch (attr) { + case hwmon_curr_input: + case hwmon_curr_min: + case hwmon_curr_max: + case hwmon_curr_highest: + return 0444; + case hwmon_curr_reset_history: + return 0200; + } + break; + case hwmon_fan: + switch (attr) { + case hwmon_fan_input: + case hwmon_fan_min: + case hwmon_fan_max: + return 0444; + } + break; + case hwmon_pwm: + switch (attr) { + case hwmon_pwm_input: + case hwmon_pwm_enable: + return 0644; + } + break; + case hwmon_power: + switch (attr) { + case hwmon_power_input: + case hwmon_power_input_highest: + return 0444; + case hwmon_power_reset_history: + return 0200; + } + break; + default: + break; + } + return 0; +} + +static const struct hwmon_ops hl_hwmon_ops = { + .is_visible = hl_is_visible, + .read = hl_read, + .write = hl_write +}; + +int hl_get_temperature(struct hl_device *hdev, + int sensor_index, u32 attr, long *value) +{ + struct cpucp_packet pkt; + u64 result; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_TEMPERATURE_GET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + + dev_dbg(hdev->dev, "get temp, ctl 0x%x, sensor %d, type %d\n", + pkt.ctl, pkt.sensor_index, pkt.type); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, &result); + + *value = (long) result; + + if (rc) { + dev_err(hdev->dev, + "Failed to get temperature from sensor %d, error %d\n", + sensor_index, rc); + *value = 0; + } + + return rc; +} + +int hl_set_temperature(struct hl_device *hdev, + int sensor_index, u32 attr, long value) +{ + struct cpucp_packet pkt; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_TEMPERATURE_SET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + pkt.value = __cpu_to_le64(value); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, NULL); + + if (rc) + dev_err(hdev->dev, + "Failed to set temperature of sensor %d, error %d\n", + sensor_index, rc); + + return rc; +} + +int hl_get_voltage(struct hl_device *hdev, + int sensor_index, u32 attr, long *value) +{ + struct cpucp_packet pkt; + u64 result; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_VOLTAGE_GET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, &result); + + *value = (long) result; + + if (rc) { + dev_err(hdev->dev, + "Failed to get voltage from sensor %d, error %d\n", + sensor_index, rc); + *value = 0; + } + + return rc; +} + +int hl_get_current(struct hl_device *hdev, + int sensor_index, u32 attr, long *value) +{ + struct cpucp_packet pkt; + u64 result; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_CURRENT_GET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, &result); + + *value = (long) result; + + if (rc) { + dev_err(hdev->dev, + "Failed to get current from sensor %d, error %d\n", + sensor_index, rc); + *value = 0; + } + + return rc; +} + +int hl_get_fan_speed(struct hl_device *hdev, + int sensor_index, u32 attr, long *value) +{ + struct cpucp_packet pkt; + u64 result; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_FAN_SPEED_GET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, &result); + + *value = (long) result; + + if (rc) { + dev_err(hdev->dev, + "Failed to get fan speed from sensor %d, error %d\n", + sensor_index, rc); + *value = 0; + } + + return rc; +} + +int hl_get_pwm_info(struct hl_device *hdev, + int sensor_index, u32 attr, long *value) +{ + struct cpucp_packet pkt; + u64 result; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_PWM_GET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, &result); + + *value = (long) result; + + if (rc) { + dev_err(hdev->dev, + "Failed to get pwm info from sensor %d, error %d\n", + sensor_index, rc); + *value = 0; + } + + return rc; +} + +void hl_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr, + long value) +{ + struct cpucp_packet pkt; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_PWM_SET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + pkt.value = cpu_to_le64(value); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, NULL); + + if (rc) + dev_err(hdev->dev, + "Failed to set pwm info to sensor %d, error %d\n", + sensor_index, rc); +} + +int hl_set_voltage(struct hl_device *hdev, + int sensor_index, u32 attr, long value) +{ + struct cpucp_packet pkt; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_VOLTAGE_SET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + pkt.value = __cpu_to_le64(value); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, NULL); + + if (rc) + dev_err(hdev->dev, + "Failed to set voltage of sensor %d, error %d\n", + sensor_index, rc); + + return rc; +} + +int hl_set_current(struct hl_device *hdev, + int sensor_index, u32 attr, long value) +{ + struct cpucp_packet pkt; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_CURRENT_SET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + pkt.value = __cpu_to_le64(value); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, NULL); + + if (rc) + dev_err(hdev->dev, + "Failed to set current of sensor %d, error %d\n", + sensor_index, rc); + + return rc; +} + +int hl_set_power(struct hl_device *hdev, + int sensor_index, u32 attr, long value) +{ + struct cpucp_packet pkt; + struct asic_fixed_properties *prop = &hdev->asic_prop; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + if (prop->use_get_power_for_reset_history) + pkt.ctl = cpu_to_le32(CPUCP_PACKET_POWER_GET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + else + pkt.ctl = cpu_to_le32(CPUCP_PACKET_POWER_SET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + pkt.value = __cpu_to_le64(value); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, NULL); + + if (rc) + dev_err(hdev->dev, + "Failed to set power of sensor %d, error %d\n", + sensor_index, rc); + + return rc; +} + +int hl_get_power(struct hl_device *hdev, + int sensor_index, u32 attr, long *value) +{ + struct cpucp_packet pkt; + u64 result; + int rc; + + memset(&pkt, 0, sizeof(pkt)); + + pkt.ctl = cpu_to_le32(CPUCP_PACKET_POWER_GET << + CPUCP_PKT_CTL_OPCODE_SHIFT); + pkt.sensor_index = __cpu_to_le16(sensor_index); + pkt.type = __cpu_to_le16(attr); + + rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt), + 0, &result); + + *value = (long) result; + + if (rc) { + dev_err(hdev->dev, + "Failed to get power of sensor %d, error %d\n", + sensor_index, rc); + *value = 0; + } + + return rc; +} + +int hl_hwmon_init(struct hl_device *hdev) +{ + struct device *dev = hdev->pdev ? &hdev->pdev->dev : hdev->dev; + struct asic_fixed_properties *prop = &hdev->asic_prop; + int rc; + + if ((hdev->hwmon_initialized) || !(hdev->cpu_queues_enable)) + return 0; + + if (hdev->hl_chip_info->info) { + hdev->hl_chip_info->ops = &hl_hwmon_ops; + + hdev->hwmon_dev = hwmon_device_register_with_info(dev, + prop->cpucp_info.card_name, hdev, + hdev->hl_chip_info, NULL); + if (IS_ERR(hdev->hwmon_dev)) { + rc = PTR_ERR(hdev->hwmon_dev); + dev_err(hdev->dev, + "Unable to register hwmon device: %d\n", rc); + return rc; + } + + dev_info(hdev->dev, "%s: add sensors information\n", + dev_name(hdev->hwmon_dev)); + + hdev->hwmon_initialized = true; + } else { + dev_info(hdev->dev, "no available sensors\n"); + } + + return 0; +} + +void hl_hwmon_fini(struct hl_device *hdev) +{ + if (!hdev->hwmon_initialized) + return; + + hwmon_device_unregister(hdev->hwmon_dev); +} + +void hl_hwmon_release_resources(struct hl_device *hdev) +{ + const struct hwmon_channel_info **channel_info_arr; + int i = 0; + + if (!hdev->hl_chip_info->info) + return; + + channel_info_arr = hdev->hl_chip_info->info; + + while (channel_info_arr[i]) { + kfree(channel_info_arr[i]->config); + kfree(channel_info_arr[i]); + i++; + } + + kfree(channel_info_arr); + + hdev->hl_chip_info->info = NULL; +} |