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Message-Id: <20231024110041.23687-1-konrad.knitter@intel.com>
Date: Tue, 24 Oct 2023 13:00:42 +0200
From: Konrad Knitter <konrad.knitter@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
jdelvare@...e.com,
linux@...ck-us.net,
Konrad Knitter <konrad.knitter@...el.com>,
Marcin Domagala <marcinx.domagala@...el.com>,
Eric Joyner <eric.joyner@...el.com>,
Marcin Szycik <marcin.szycik@...ux.intel.com>,
Przemek Kitszel <przemyslaw.kitszel@...el.com>
Subject: [PATCH iwl-next v5] ice: read internal temperature sensor
Since 4.30 firmware exposes internal thermal sensor reading via admin
queue commands. Expose those readouts via hwmon API when supported.
Datasheet:
Get Sensor Reading Command (Opcode: 0x0632)
+--------------------+--------+--------------------+-------------------------+
| Name | Bytes | Value | Remarks |
+--------------------+--------+--------------------+-------------------------+
| Flags | 1-0 | | |
| Opcode | 2-3 | 0x0632 | Command opcode |
| Datalen | 4-5 | 0 | No external buffer. |
| Return value | 6-7 | | Return value. |
| Cookie High | 8-11 | Cookie | |
| Cookie Low | 12-15 | Cookie | |
| Sensor | 16 | | 0x00: Internal temp |
| | | | 0x01-0xFF: Reserved. |
| Format | 17 | Requested response | Only 0x00 is supported. |
| | | format | 0x01-0xFF: Reserved. |
| Reserved | 18-23 | | |
| Data Address high | 24-27 | Response buffer | |
| | | address | |
| Data Address low | 28-31 | Response buffer | |
| | | address | |
+--------------------+--------+--------------------+-------------------------+
Get Sensor Reading Response (Opcode: 0x0632)
+--------------------+--------+--------------------+-------------------------+
| Name | Bytes | Value | Remarks |
+--------------------+--------+--------------------+-------------------------+
| Flags | 1-0 | | |
| Opcode | 2-3 | 0x0632 | Command opcode |
| Datalen | 4-5 | 0 | No external buffer |
| Return value | 6-7 | | Return value. |
| | | | EINVAL: Invalid |
| | | | parameters |
| | | | ENOENT: Unsupported |
| | | | sensor |
| | | | EIO: Sensor access |
| | | | error |
| Cookie High | 8-11 | Cookie | |
| Cookie Low | 12-15 | Cookie | |
| Sensor Reading | 16-23 | | Format of the reading |
| | | | is dependent on request |
| Data Address high | 24-27 | Response buffer | |
| | | address | |
| Data Address low | 28-31 | Response buffer | |
| | | address | |
+--------------------+--------+--------------------+-------------------------+
Sensor Reading for Sensor 0x00 (Internal Chip Temperature):
+--------------------+--------+--------------------+-------------------------+
| Name | Bytes | Value | Remarks |
+--------------------+--------+--------------------+-------------------------+
| Thermal Sensor | 0 | | Reading in degrees |
| reading | | | Celsius. Signed int8 |
| Warning High | 1 | | Warning High threshold |
| threshold | | | in degrees Celsius. |
| | | | Unsigned int8. |
| | | | 0xFF when unsupported |
| Critical High | 2 | | Critical High threshold |
| threshold | | | in degrees Celsius. |
| | | | Unsigned int8. |
| | | | 0xFF when unsupported |
| Fatal High | 3 | | Fatal High threshold |
| threshold | | | in degrees Celsius. |
| | | | Unsigned int8. |
| | | | 0xFF when unsupported |
| Reserved | 4-7 | | |
+--------------------+--------+--------------------+-------------------------+
Driver provides current reading from HW as well as device specific
thresholds for thermal alarm (Warning, Critical, Fatal) events.
$ sensors
Output
=========================================================
ice-pci-b100
Adapter: PCI adapter
temp1: +62.0°C (high = +95.0°C, crit = +105.0°C)
(emerg = +115.0°C)
Tested on Intel Corporation Ethernet Controller E810-C for SFP
Co-developed-by: Marcin Domagala <marcinx.domagala@...el.com>
Signed-off-by: Marcin Domagala <marcinx.domagala@...el.com>
Co-developed-by: Eric Joyner <eric.joyner@...el.com>
Signed-off-by: Eric Joyner <eric.joyner@...el.com>
Reviewed-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Signed-off-by: Konrad Knitter <konrad.knitter@...el.com>
---
v5: additional documentation, fix CONFIG_ICE=y, CONFIG_HWMON=m
v4: added dependency config_hwmon, cleanups
v3: add SPDX identification to ice_hwmon files
v2: fix formmating issues, added hwmon maintainers to Cc
---
drivers/net/ethernet/intel/Kconfig | 11 ++
drivers/net/ethernet/intel/ice/Makefile | 1 +
drivers/net/ethernet/intel/ice/ice.h | 1 +
.../net/ethernet/intel/ice/ice_adminq_cmd.h | 28 ++++
drivers/net/ethernet/intel/ice/ice_common.c | 54 +++++++-
drivers/net/ethernet/intel/ice/ice_common.h | 2 +
drivers/net/ethernet/intel/ice/ice_hwmon.c | 126 ++++++++++++++++++
drivers/net/ethernet/intel/ice/ice_hwmon.h | 15 +++
drivers/net/ethernet/intel/ice/ice_main.c | 5 +
drivers/net/ethernet/intel/ice/ice_type.h | 7 +
10 files changed, 249 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/ethernet/intel/ice/ice_hwmon.c
create mode 100644 drivers/net/ethernet/intel/ice/ice_hwmon.h
diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index 06ddd7147c7f..d55638ad8704 100644
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig
@@ -299,6 +299,17 @@ config ICE
To compile this driver as a module, choose M here. The module
will be called ice.
+config ICE_HWMON
+ bool "Intel(R) Ethernet Connection E800 Series Support HWMON support"
+ default y
+ depends on ICE && HWMON && !(ICE=y && HWMON=m)
+ help
+ Say Y if you want to expose thermal sensor data on Intel devices.
+
+ Some of our devices contain internal thermal sensors.
+ This data is available via the hwmon sysfs interface and exposes
+ the onboard sensors.
+
config ICE_SWITCHDEV
bool "Switchdev Support"
default y
diff --git a/drivers/net/ethernet/intel/ice/Makefile b/drivers/net/ethernet/intel/ice/Makefile
index 0679907980f7..b40b4179b9f4 100644
--- a/drivers/net/ethernet/intel/ice/Makefile
+++ b/drivers/net/ethernet/intel/ice/Makefile
@@ -49,3 +49,4 @@ ice-$(CONFIG_RFS_ACCEL) += ice_arfs.o
ice-$(CONFIG_XDP_SOCKETS) += ice_xsk.o
ice-$(CONFIG_ICE_SWITCHDEV) += ice_eswitch.o ice_eswitch_br.o
ice-$(CONFIG_GNSS) += ice_gnss.o
+ice-$(CONFIG_ICE_HWMON) += ice_hwmon.o
diff --git a/drivers/net/ethernet/intel/ice/ice.h b/drivers/net/ethernet/intel/ice/ice.h
index 351e0d36df44..95636b21aaab 100644
--- a/drivers/net/ethernet/intel/ice/ice.h
+++ b/drivers/net/ethernet/intel/ice/ice.h
@@ -648,6 +648,7 @@ struct ice_pf {
#define ICE_MAX_VF_AGG_NODES 32
struct ice_agg_node vf_agg_node[ICE_MAX_VF_AGG_NODES];
struct ice_dplls dplls;
+ struct device *hwmon_dev;
};
extern struct workqueue_struct *ice_lag_wq;
diff --git a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
index d7fdb7ba7268..f77a3c70f262 100644
--- a/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
+++ b/drivers/net/ethernet/intel/ice/ice_adminq_cmd.h
@@ -117,6 +117,7 @@ struct ice_aqc_list_caps_elem {
#define ICE_AQC_CAPS_NET_VER 0x004C
#define ICE_AQC_CAPS_PENDING_NET_VER 0x004D
#define ICE_AQC_CAPS_RDMA 0x0051
+#define ICE_AQC_CAPS_SENSOR_READING 0x0067
#define ICE_AQC_CAPS_PCIE_RESET_AVOIDANCE 0x0076
#define ICE_AQC_CAPS_POST_UPDATE_RESET_RESTRICT 0x0077
#define ICE_AQC_CAPS_NVM_MGMT 0x0080
@@ -1413,6 +1414,30 @@ struct ice_aqc_get_phy_rec_clk_out {
__le16 node_handle;
};
+/* Get sensor reading (direct 0x0632) */
+struct ice_aqc_get_sensor_reading {
+ u8 sensor;
+ u8 format;
+ u8 reserved[6];
+ __le32 addr_high;
+ __le32 addr_low;
+};
+
+/* Get sensor reading response (direct 0x0632) */
+struct ice_aqc_get_sensor_reading_resp {
+ union {
+ u8 raw[8];
+ /* Output data for sensor 0x00, format 0x00 */
+ struct _packed {
+ s8 temp;
+ u8 temp_warning_threshold;
+ u8 temp_critical_threshold;
+ u8 temp_fatal_threshold;
+ u8 reserved[4];
+ } s0f0;
+ } data;
+};
+
struct ice_aqc_link_topo_params {
u8 lport_num;
u8 lport_num_valid;
@@ -2443,6 +2468,8 @@ struct ice_aq_desc {
struct ice_aqc_restart_an restart_an;
struct ice_aqc_set_phy_rec_clk_out set_phy_rec_clk_out;
struct ice_aqc_get_phy_rec_clk_out get_phy_rec_clk_out;
+ struct ice_aqc_get_sensor_reading get_sensor_reading;
+ struct ice_aqc_get_sensor_reading_resp get_sensor_reading_resp;
struct ice_aqc_gpio read_write_gpio;
struct ice_aqc_sff_eeprom read_write_sff_param;
struct ice_aqc_set_port_id_led set_port_id_led;
@@ -2618,6 +2645,7 @@ enum ice_adminq_opc {
ice_aqc_opc_set_mac_lb = 0x0620,
ice_aqc_opc_set_phy_rec_clk_out = 0x0630,
ice_aqc_opc_get_phy_rec_clk_out = 0x0631,
+ ice_aqc_opc_get_sensor_reading = 0x0632,
ice_aqc_opc_get_link_topo = 0x06E0,
ice_aqc_opc_read_i2c = 0x06E2,
ice_aqc_opc_write_i2c = 0x06E3,
diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 9a6c25f98632..8d97434e1413 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -2710,6 +2710,26 @@ ice_parse_fdir_dev_caps(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
dev_p->num_flow_director_fltr);
}
+/**
+ * ice_parse_sensor_reading_cap - Parse ICE_AQC_CAPS_SENSOR_READING cap
+ * @hw: pointer to the HW struct
+ * @dev_p: pointer to device capabilities structure
+ * @cap: capability element to parse
+ *
+ * Parse ICE_AQC_CAPS_SENSOR_READING for device capability for reading
+ * enabled sensors.
+ */
+static void
+ice_parse_sensor_reading_cap(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
+ struct ice_aqc_list_caps_elem *cap)
+{
+ dev_p->supported_sensors = le32_to_cpu(cap->number);
+
+ ice_debug(hw, ICE_DBG_INIT,
+ "dev caps: supported sensors (bitmap) = 0x%x\n",
+ dev_p->supported_sensors);
+}
+
/**
* ice_parse_dev_caps - Parse device capabilities
* @hw: pointer to the HW struct
@@ -2755,9 +2775,12 @@ ice_parse_dev_caps(struct ice_hw *hw, struct ice_hw_dev_caps *dev_p,
case ICE_AQC_CAPS_1588:
ice_parse_1588_dev_caps(hw, dev_p, &cap_resp[i]);
break;
- case ICE_AQC_CAPS_FD:
+ case ICE_AQC_CAPS_FD:
ice_parse_fdir_dev_caps(hw, dev_p, &cap_resp[i]);
break;
+ case ICE_AQC_CAPS_SENSOR_READING:
+ ice_parse_sensor_reading_cap(hw, dev_p, &cap_resp[i]);
+ break;
default:
/* Don't list common capabilities as unknown */
if (!found)
@@ -5540,6 +5563,35 @@ ice_aq_get_phy_rec_clk_out(struct ice_hw *hw, u8 *phy_output, u8 *port_num,
return status;
}
+/**
+ * ice_aq_get_sensor_reading
+ * @hw: pointer to the HW struct
+ * @data: pointer to data to be read from the sensor
+ *
+ * Get sensor reading (0x0632)
+ */
+int ice_aq_get_sensor_reading(struct ice_hw *hw,
+ struct ice_aqc_get_sensor_reading_resp *data)
+{
+ struct ice_aqc_get_sensor_reading *cmd;
+ struct ice_aq_desc desc;
+ int status;
+
+ ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_sensor_reading);
+ cmd = &desc.params.get_sensor_reading;
+#define ICE_INTERNAL_TEMP_SENSOR_FORMAT 0
+#define ICE_INTERNAL_TEMP_SENSOR 0
+ cmd->sensor = ICE_INTERNAL_TEMP_SENSOR;
+ cmd->format = ICE_INTERNAL_TEMP_SENSOR_FORMAT;
+
+ status = ice_aq_send_cmd(hw, &desc, NULL, 0, NULL);
+ if (!status)
+ memcpy(data, &desc.params.get_sensor_reading_resp,
+ sizeof(*data));
+
+ return status;
+}
+
/**
* ice_replay_pre_init - replay pre initialization
* @hw: pointer to the HW struct
diff --git a/drivers/net/ethernet/intel/ice/ice_common.h b/drivers/net/ethernet/intel/ice/ice_common.h
index 31fdcac33986..5f7aa293d4ae 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.h
+++ b/drivers/net/ethernet/intel/ice/ice_common.h
@@ -241,6 +241,8 @@ ice_aq_set_phy_rec_clk_out(struct ice_hw *hw, u8 phy_output, bool enable,
int
ice_aq_get_phy_rec_clk_out(struct ice_hw *hw, u8 *phy_output, u8 *port_num,
u8 *flags, u16 *node_handle);
+int ice_aq_get_sensor_reading(struct ice_hw *hw,
+ struct ice_aqc_get_sensor_reading_resp *data);
void
ice_stat_update40(struct ice_hw *hw, u32 reg, bool prev_stat_loaded,
u64 *prev_stat, u64 *cur_stat);
diff --git a/drivers/net/ethernet/intel/ice/ice_hwmon.c b/drivers/net/ethernet/intel/ice/ice_hwmon.c
new file mode 100644
index 000000000000..e4c2c1bff6c0
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_hwmon.c
@@ -0,0 +1,126 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2023, Intel Corporation. */
+
+#include "ice.h"
+#include "ice_hwmon.h"
+#include "ice_adminq_cmd.h"
+
+#include <linux/hwmon.h>
+
+#define TEMP_FROM_REG(reg) ((reg) * 1000)
+
+static const struct hwmon_channel_info *ice_hwmon_info[] = {
+ HWMON_CHANNEL_INFO(temp,
+ HWMON_T_INPUT | HWMON_T_MAX |
+ HWMON_T_CRIT | HWMON_T_EMERGENCY),
+ NULL
+};
+
+static int ice_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
+{
+ struct ice_aqc_get_sensor_reading_resp resp;
+ struct ice_pf *pf = dev_get_drvdata(dev);
+ int ret;
+
+ if (type != hwmon_temp)
+ return -EOPNOTSUPP;
+
+ ret = ice_aq_get_sensor_reading(&pf->hw, &resp);
+ if (ret) {
+ dev_warn_ratelimited(dev,
+ "%s HW read failure (%d)\n",
+ __func__,
+ ret);
+ return ret;
+ }
+
+ switch (attr) {
+ case hwmon_temp_input:
+ *val = TEMP_FROM_REG(resp.data.s0f0.temp);
+ break;
+ case hwmon_temp_max:
+ *val = TEMP_FROM_REG(resp.data.s0f0.temp_warning_threshold);
+ break;
+ case hwmon_temp_crit:
+ *val = TEMP_FROM_REG(resp.data.s0f0.temp_critical_threshold);
+ break;
+ case hwmon_temp_emergency:
+ *val = TEMP_FROM_REG(resp.data.s0f0.temp_fatal_threshold);
+ break;
+ default:
+ dev_dbg(dev, "%s unsupported attribute (%d)\n",
+ __func__, attr);
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static umode_t ice_hwmon_is_visible(const void *data,
+ enum hwmon_sensor_types type, u32 attr,
+ int channel)
+{
+ if (type != hwmon_temp)
+ return 0;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_crit:
+ case hwmon_temp_max:
+ case hwmon_temp_emergency:
+ return 0444;
+ }
+
+ return 0;
+}
+
+static const struct hwmon_ops ice_hwmon_ops = {
+ .is_visible = ice_hwmon_is_visible,
+ .read = ice_hwmon_read
+};
+
+static const struct hwmon_chip_info ice_chip_info = {
+ .ops = &ice_hwmon_ops,
+ .info = ice_hwmon_info
+};
+
+static bool ice_is_internal_reading_supported(struct ice_pf *pf)
+{
+ /* Only the first PF will report temperature for a chip.
+ * Note that internal temp reading is not supported
+ * for older FW (< v4.30).
+ */
+ if (pf->hw.pf_id)
+ return false;
+
+ unsigned long sensors = pf->hw.dev_caps.supported_sensors;
+
+ return _test_bit(ICE_SENSOR_SUPPORT_E810_INT_TEMP_BIT, &sensors);
+};
+
+void ice_hwmon_init(struct ice_pf *pf)
+{
+ struct device *dev = ice_pf_to_dev(pf);
+ struct device *hdev;
+
+ if (!ice_is_internal_reading_supported(pf))
+ return;
+
+ hdev = hwmon_device_register_with_info(dev, "ice", pf, &ice_chip_info,
+ NULL);
+ if (IS_ERR(hdev)) {
+ dev_warn(dev,
+ "hwmon_device_register_with_info returns error (%ld)",
+ PTR_ERR(hdev));
+ return;
+ }
+ pf->hwmon_dev = hdev;
+}
+
+void ice_hwmon_exit(struct ice_pf *pf)
+{
+ if (!pf->hwmon_dev)
+ return;
+ hwmon_device_unregister(pf->hwmon_dev);
+}
diff --git a/drivers/net/ethernet/intel/ice/ice_hwmon.h b/drivers/net/ethernet/intel/ice/ice_hwmon.h
new file mode 100644
index 000000000000..433cf6e32cce
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_hwmon.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2023, Intel Corporation. */
+
+#ifndef _ICE_HWMON_H_
+#define _ICE_HWMON_H_
+
+#ifdef CONFIG_ICE_HWMON
+void ice_hwmon_init(struct ice_pf *pf);
+void ice_hwmon_exit(struct ice_pf *pf);
+#else /* CONFIG_ICE_HWMON */
+static void ice_hwmon_init(struct ice_pf *pf) { }
+static void ice_hwmon_exit(struct ice_pf *pf) { }
+#endif /* CONFIG_ICE_HWMON */
+
+#endif /* _ICE_HWMON_H_ */
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 66095e9b094e..5529641f38d1 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -14,6 +14,7 @@
#include "ice_dcb_lib.h"
#include "ice_dcb_nl.h"
#include "ice_devlink.h"
+#include "ice_hwmon.h"
/* Including ice_trace.h with CREATE_TRACE_POINTS defined will generate the
* ice tracepoint functions. This must be done exactly once across the
* ice driver.
@@ -4685,6 +4686,8 @@ static void ice_init_features(struct ice_pf *pf)
if (ice_init_lag(pf))
dev_warn(dev, "Failed to init link aggregation support\n");
+
+ ice_hwmon_init(pf);
}
static void ice_deinit_features(struct ice_pf *pf)
@@ -5208,6 +5211,8 @@ static void ice_remove(struct pci_dev *pdev)
ice_free_vfs(pf);
}
+ ice_hwmon_exit(pf);
+
ice_service_task_stop(pf);
ice_aq_cancel_waiting_tasks(pf);
set_bit(ICE_DOWN, pf->state);
diff --git a/drivers/net/ethernet/intel/ice/ice_type.h b/drivers/net/ethernet/intel/ice/ice_type.h
index a18ca0ff879f..5a80158e49ed 100644
--- a/drivers/net/ethernet/intel/ice/ice_type.h
+++ b/drivers/net/ethernet/intel/ice/ice_type.h
@@ -377,6 +377,8 @@ struct ice_hw_func_caps {
struct ice_ts_func_info ts_func_info;
};
+#define ICE_SENSOR_SUPPORT_E810_INT_TEMP_BIT 0
+
/* Device wide capabilities */
struct ice_hw_dev_caps {
struct ice_hw_common_caps common_cap;
@@ -385,6 +387,11 @@ struct ice_hw_dev_caps {
u32 num_flow_director_fltr; /* Number of FD filters available */
struct ice_ts_dev_info ts_dev_info;
u32 num_funcs;
+ /* bitmap of supported sensors
+ * bit 0 - internal temperature sensor
+ * bit 31:1 - Reserved
+ */
+ u32 supported_sensors;
};
/* MAC info */
base-commit: 568509a9af20856bb64f848556a0b4fd73f5ab18
--
2.35.3
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