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habanalabs: support temperature offset via sysfs
This commit adds support for offsetting the temperatures reading by a specified value as defined in https://www.kernel.org/doc/Documentation/hwmon/sysfs-interface using the standard sysfs defined for hwmon. This is required by system administrators to inject errors to test their monitoring applications in data centers. Signed-off-by: Moti Haimovski <mhaimovski@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
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parent
e5509d5279
commit
5557b138dc
3 changed files with 51 additions and 1 deletions
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@ -1610,6 +1610,8 @@ int hl_pci_set_dma_mask(struct hl_device *hdev, u8 dma_mask);
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long hl_get_frequency(struct hl_device *hdev, u32 pll_index, bool curr);
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void hl_set_frequency(struct hl_device *hdev, u32 pll_index, u64 freq);
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long hl_get_temperature(struct hl_device *hdev, int sensor_index, u32 attr);
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int hl_set_temperature(struct hl_device *hdev,
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int sensor_index, u32 attr, long value);
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long hl_get_voltage(struct hl_device *hdev, int sensor_index, u32 attr);
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long hl_get_current(struct hl_device *hdev, int sensor_index, u32 attr);
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long hl_get_fan_speed(struct hl_device *hdev, int sensor_index, u32 attr);
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@ -125,6 +125,7 @@ static int hl_read(struct device *dev, enum hwmon_sensor_types type,
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case hwmon_temp_crit:
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case hwmon_temp_max_hyst:
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case hwmon_temp_crit_hyst:
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case hwmon_temp_offset:
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break;
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default:
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return -EINVAL;
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@ -192,6 +193,15 @@ static int hl_write(struct device *dev, enum hwmon_sensor_types type,
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return -ENODEV;
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switch (type) {
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case hwmon_temp:
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switch (attr) {
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case hwmon_temp_offset:
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break;
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default:
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return -EINVAL;
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}
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hl_set_temperature(hdev, channel, attr, val);
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break;
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case hwmon_pwm:
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switch (attr) {
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case hwmon_pwm_input:
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@ -220,6 +230,8 @@ static umode_t hl_is_visible(const void *data, enum hwmon_sensor_types type,
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case hwmon_temp_crit:
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case hwmon_temp_crit_hyst:
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return 0444;
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case hwmon_temp_offset:
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return 0644;
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}
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break;
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case hwmon_in:
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@ -291,6 +303,31 @@ long hl_get_temperature(struct hl_device *hdev, int sensor_index, u32 attr)
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return result;
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}
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int hl_set_temperature(struct hl_device *hdev,
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int sensor_index, u32 attr, long value)
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{
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struct armcp_packet pkt;
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int rc;
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memset(&pkt, 0, sizeof(pkt));
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pkt.ctl = cpu_to_le32(ARMCP_PACKET_TEMPERATURE_SET <<
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ARMCP_PKT_CTL_OPCODE_SHIFT);
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pkt.sensor_index = __cpu_to_le16(sensor_index);
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pkt.type = __cpu_to_le16(attr);
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pkt.value = __cpu_to_le64(value);
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rc = hdev->asic_funcs->send_cpu_message(hdev, (u32 *) &pkt, sizeof(pkt),
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SENSORS_PKT_TIMEOUT, NULL);
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if (rc)
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dev_err(hdev->dev,
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"Failed to set temperature of sensor %d, error %d\n",
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sensor_index, rc);
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return rc;
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}
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long hl_get_voltage(struct hl_device *hdev, int sensor_index, u32 attr)
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{
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struct armcp_packet pkt;
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@ -189,6 +189,10 @@ enum pq_init_status {
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* ArmCP to write to the structure, to prevent data corruption in case of
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* mismatched driver/FW versions.
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*
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* ARMCP_PACKET_TEMPERATURE_SET -
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* Set the value of the offset property of a specified thermal sensor.
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* The packet's arguments specify the desired sensor and the field to
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* set.
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*/
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enum armcp_packet_id {
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@ -214,6 +218,8 @@ enum armcp_packet_id {
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ARMCP_PACKET_MAX_POWER_GET, /* sysfs */
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ARMCP_PACKET_MAX_POWER_SET, /* sysfs */
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ARMCP_PACKET_EEPROM_DATA_GET, /* sysfs */
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ARMCP_RESERVED,
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ARMCP_PACKET_TEMPERATURE_SET, /* sysfs */
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};
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#define ARMCP_PACKET_FENCE_VAL 0xFE8CE7A5
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@ -271,12 +277,17 @@ enum armcp_packet_rc {
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armcp_packet_fault
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};
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/*
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* armcp_temp_type should adhere to hwmon_temp_attributes
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* defined in Linux kernel hwmon.h file
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*/
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enum armcp_temp_type {
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armcp_temp_input,
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armcp_temp_max = 6,
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armcp_temp_max_hyst,
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armcp_temp_crit,
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armcp_temp_crit_hyst
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armcp_temp_crit_hyst,
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armcp_temp_offset = 19
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};
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enum armcp_in_attributes {
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