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hwmon: peci: Add dimmtemp driver
Add peci-dimmtemp driver for Temperature Sensor on DIMM readings that are accessible via the processor PECI interface. The main use case for the driver (and PECI interface) is out-of-band management, where we're able to obtain thermal readings from an external entity connected with PECI, e.g. BMC on server platforms. Co-developed-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com> Signed-off-by: Iwona Winiarska <iwona.winiarska@intel.com> Link: https://lore.kernel.org/r/20220208153639.255278-12-iwona.winiarska@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Iwona Winiarska
Greg Kroah-Hartman
parent
bf3608f338
commit
73bc1b885d
@ -14,5 +14,18 @@ config SENSORS_PECI_CPUTEMP
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This driver can also be built as a module. If so, the module
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will be called peci-cputemp.
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config SENSORS_PECI_DIMMTEMP
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tristate "PECI DIMM temperature monitoring client"
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depends on PECI
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select SENSORS_PECI
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select PECI_CPU
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help
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If you say yes here you get support for the generic Intel PECI hwmon
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driver which provides Temperature Sensor on DIMM readings that are
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accessible via the processor PECI interface.
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This driver can also be built as a module. If so, the module
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will be called peci-dimmtemp.
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config SENSORS_PECI
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tristate
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@ -1,5 +1,7 @@
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# SPDX-License-Identifier: GPL-2.0-only
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peci-cputemp-y := cputemp.o
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peci-dimmtemp-y := dimmtemp.o
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obj-$(CONFIG_SENSORS_PECI_CPUTEMP) += peci-cputemp.o
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obj-$(CONFIG_SENSORS_PECI_DIMMTEMP) += peci-dimmtemp.o
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630
drivers/hwmon/peci/dimmtemp.c
Normal file
630
drivers/hwmon/peci/dimmtemp.c
Normal file
@ -0,0 +1,630 @@
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// SPDX-License-Identifier: GPL-2.0-only
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// Copyright (c) 2018-2021 Intel Corporation
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#include <linux/auxiliary_bus.h>
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#include <linux/bitfield.h>
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#include <linux/bitops.h>
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#include <linux/hwmon.h>
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#include <linux/jiffies.h>
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#include <linux/module.h>
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#include <linux/peci.h>
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#include <linux/peci-cpu.h>
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#include <linux/units.h>
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#include <linux/workqueue.h>
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#include "common.h"
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#define DIMM_MASK_CHECK_DELAY_JIFFIES msecs_to_jiffies(5000)
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/* Max number of channel ranks and DIMM index per channel */
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#define CHAN_RANK_MAX_ON_HSX 8
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#define DIMM_IDX_MAX_ON_HSX 3
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#define CHAN_RANK_MAX_ON_BDX 4
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#define DIMM_IDX_MAX_ON_BDX 3
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#define CHAN_RANK_MAX_ON_BDXD 2
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#define DIMM_IDX_MAX_ON_BDXD 2
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#define CHAN_RANK_MAX_ON_SKX 6
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#define DIMM_IDX_MAX_ON_SKX 2
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#define CHAN_RANK_MAX_ON_ICX 8
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#define DIMM_IDX_MAX_ON_ICX 2
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#define CHAN_RANK_MAX_ON_ICXD 4
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#define DIMM_IDX_MAX_ON_ICXD 2
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#define CHAN_RANK_MAX CHAN_RANK_MAX_ON_HSX
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#define DIMM_IDX_MAX DIMM_IDX_MAX_ON_HSX
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#define DIMM_NUMS_MAX (CHAN_RANK_MAX * DIMM_IDX_MAX)
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#define CPU_SEG_MASK GENMASK(23, 16)
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#define GET_CPU_SEG(x) (((x) & CPU_SEG_MASK) >> 16)
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#define CPU_BUS_MASK GENMASK(7, 0)
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#define GET_CPU_BUS(x) ((x) & CPU_BUS_MASK)
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#define DIMM_TEMP_MAX GENMASK(15, 8)
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#define DIMM_TEMP_CRIT GENMASK(23, 16)
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#define GET_TEMP_MAX(x) (((x) & DIMM_TEMP_MAX) >> 8)
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#define GET_TEMP_CRIT(x) (((x) & DIMM_TEMP_CRIT) >> 16)
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#define NO_DIMM_RETRY_COUNT_MAX 5
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struct peci_dimmtemp;
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struct dimm_info {
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int chan_rank_max;
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int dimm_idx_max;
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u8 min_peci_revision;
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int (*read_thresholds)(struct peci_dimmtemp *priv, int dimm_order,
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int chan_rank, u32 *data);
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};
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struct peci_dimm_thresholds {
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long temp_max;
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long temp_crit;
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struct peci_sensor_state state;
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};
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enum peci_dimm_threshold_type {
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temp_max_type,
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temp_crit_type,
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};
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struct peci_dimmtemp {
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struct peci_device *peci_dev;
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struct device *dev;
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const char *name;
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const struct dimm_info *gen_info;
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struct delayed_work detect_work;
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struct {
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struct peci_sensor_data temp;
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struct peci_dimm_thresholds thresholds;
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} dimm[DIMM_NUMS_MAX];
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char **dimmtemp_label;
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DECLARE_BITMAP(dimm_mask, DIMM_NUMS_MAX);
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u8 no_dimm_retry_count;
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};
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static u8 __dimm_temp(u32 reg, int dimm_order)
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{
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return (reg >> (dimm_order * 8)) & 0xff;
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}
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static int get_dimm_temp(struct peci_dimmtemp *priv, int dimm_no, long *val)
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{
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int dimm_order = dimm_no % priv->gen_info->dimm_idx_max;
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int chan_rank = dimm_no / priv->gen_info->dimm_idx_max;
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int ret = 0;
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u32 data;
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mutex_lock(&priv->dimm[dimm_no].temp.state.lock);
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if (!peci_sensor_need_update(&priv->dimm[dimm_no].temp.state))
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goto skip_update;
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ret = peci_pcs_read(priv->peci_dev, PECI_PCS_DDR_DIMM_TEMP, chan_rank, &data);
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if (ret)
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goto unlock;
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priv->dimm[dimm_no].temp.value = __dimm_temp(data, dimm_order) * MILLIDEGREE_PER_DEGREE;
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peci_sensor_mark_updated(&priv->dimm[dimm_no].temp.state);
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skip_update:
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*val = priv->dimm[dimm_no].temp.value;
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unlock:
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mutex_unlock(&priv->dimm[dimm_no].temp.state.lock);
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return ret;
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}
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static int update_thresholds(struct peci_dimmtemp *priv, int dimm_no)
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{
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int dimm_order = dimm_no % priv->gen_info->dimm_idx_max;
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int chan_rank = dimm_no / priv->gen_info->dimm_idx_max;
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u32 data;
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int ret;
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if (!peci_sensor_need_update(&priv->dimm[dimm_no].thresholds.state))
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return 0;
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ret = priv->gen_info->read_thresholds(priv, dimm_order, chan_rank, &data);
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if (ret == -ENODATA) /* Use default or previous value */
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return 0;
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if (ret)
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return ret;
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priv->dimm[dimm_no].thresholds.temp_max = GET_TEMP_MAX(data) * MILLIDEGREE_PER_DEGREE;
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priv->dimm[dimm_no].thresholds.temp_crit = GET_TEMP_CRIT(data) * MILLIDEGREE_PER_DEGREE;
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peci_sensor_mark_updated(&priv->dimm[dimm_no].thresholds.state);
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return 0;
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}
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static int get_dimm_thresholds(struct peci_dimmtemp *priv, enum peci_dimm_threshold_type type,
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int dimm_no, long *val)
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{
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int ret;
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mutex_lock(&priv->dimm[dimm_no].thresholds.state.lock);
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ret = update_thresholds(priv, dimm_no);
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if (ret)
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goto unlock;
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switch (type) {
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case temp_max_type:
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*val = priv->dimm[dimm_no].thresholds.temp_max;
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break;
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case temp_crit_type:
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*val = priv->dimm[dimm_no].thresholds.temp_crit;
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break;
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default:
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ret = -EOPNOTSUPP;
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break;
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}
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unlock:
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mutex_unlock(&priv->dimm[dimm_no].thresholds.state.lock);
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return ret;
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}
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static int dimmtemp_read_string(struct device *dev,
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enum hwmon_sensor_types type,
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u32 attr, int channel, const char **str)
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{
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struct peci_dimmtemp *priv = dev_get_drvdata(dev);
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if (attr != hwmon_temp_label)
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return -EOPNOTSUPP;
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*str = (const char *)priv->dimmtemp_label[channel];
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return 0;
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}
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static int dimmtemp_read(struct device *dev, enum hwmon_sensor_types type,
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u32 attr, int channel, long *val)
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{
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struct peci_dimmtemp *priv = dev_get_drvdata(dev);
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switch (attr) {
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case hwmon_temp_input:
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return get_dimm_temp(priv, channel, val);
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case hwmon_temp_max:
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return get_dimm_thresholds(priv, temp_max_type, channel, val);
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case hwmon_temp_crit:
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return get_dimm_thresholds(priv, temp_crit_type, channel, val);
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default:
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break;
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}
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return -EOPNOTSUPP;
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}
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static umode_t dimmtemp_is_visible(const void *data, enum hwmon_sensor_types type,
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u32 attr, int channel)
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{
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const struct peci_dimmtemp *priv = data;
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if (test_bit(channel, priv->dimm_mask))
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return 0444;
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return 0;
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}
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static const struct hwmon_ops peci_dimmtemp_ops = {
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.is_visible = dimmtemp_is_visible,
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.read_string = dimmtemp_read_string,
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.read = dimmtemp_read,
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};
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static int check_populated_dimms(struct peci_dimmtemp *priv)
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{
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int chan_rank_max = priv->gen_info->chan_rank_max;
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int dimm_idx_max = priv->gen_info->dimm_idx_max;
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u32 chan_rank_empty = 0;
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u64 dimm_mask = 0;
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int chan_rank, dimm_idx, ret;
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u32 pcs;
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BUILD_BUG_ON(BITS_PER_TYPE(chan_rank_empty) < CHAN_RANK_MAX);
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BUILD_BUG_ON(BITS_PER_TYPE(dimm_mask) < DIMM_NUMS_MAX);
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if (chan_rank_max * dimm_idx_max > DIMM_NUMS_MAX) {
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WARN_ONCE(1, "Unsupported number of DIMMs - chan_rank_max: %d, dimm_idx_max: %d",
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chan_rank_max, dimm_idx_max);
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return -EINVAL;
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}
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for (chan_rank = 0; chan_rank < chan_rank_max; chan_rank++) {
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ret = peci_pcs_read(priv->peci_dev, PECI_PCS_DDR_DIMM_TEMP, chan_rank, &pcs);
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if (ret) {
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/*
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* Overall, we expect either success or -EINVAL in
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* order to determine whether DIMM is populated or not.
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* For anything else we fall back to deferring the
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* detection to be performed at a later point in time.
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*/
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if (ret == -EINVAL) {
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chan_rank_empty |= BIT(chan_rank);
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continue;
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}
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return -EAGAIN;
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}
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for (dimm_idx = 0; dimm_idx < dimm_idx_max; dimm_idx++)
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if (__dimm_temp(pcs, dimm_idx))
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dimm_mask |= BIT(chan_rank * dimm_idx_max + dimm_idx);
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}
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/*
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* If we got all -EINVALs, it means that the CPU doesn't have any
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* DIMMs. Unfortunately, it may also happen at the very start of
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* host platform boot. Retrying a couple of times lets us make sure
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* that the state is persistent.
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*/
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if (chan_rank_empty == GENMASK(chan_rank_max - 1, 0)) {
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if (priv->no_dimm_retry_count < NO_DIMM_RETRY_COUNT_MAX) {
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priv->no_dimm_retry_count++;
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return -EAGAIN;
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}
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return -ENODEV;
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}
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/*
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* It's possible that memory training is not done yet. In this case we
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* defer the detection to be performed at a later point in time.
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*/
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if (!dimm_mask) {
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priv->no_dimm_retry_count = 0;
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return -EAGAIN;
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}
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dev_dbg(priv->dev, "Scanned populated DIMMs: %#llx\n", dimm_mask);
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bitmap_from_u64(priv->dimm_mask, dimm_mask);
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return 0;
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}
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static int create_dimm_temp_label(struct peci_dimmtemp *priv, int chan)
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{
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int rank = chan / priv->gen_info->dimm_idx_max;
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int idx = chan % priv->gen_info->dimm_idx_max;
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priv->dimmtemp_label[chan] = devm_kasprintf(priv->dev, GFP_KERNEL,
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"DIMM %c%d", 'A' + rank,
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idx + 1);
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if (!priv->dimmtemp_label[chan])
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return -ENOMEM;
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return 0;
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}
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static const u32 peci_dimmtemp_temp_channel_config[] = {
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[0 ... DIMM_NUMS_MAX - 1] = HWMON_T_LABEL | HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT,
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0
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};
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static const struct hwmon_channel_info peci_dimmtemp_temp_channel = {
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.type = hwmon_temp,
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.config = peci_dimmtemp_temp_channel_config,
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};
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static const struct hwmon_channel_info *peci_dimmtemp_temp_info[] = {
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&peci_dimmtemp_temp_channel,
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NULL
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};
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static const struct hwmon_chip_info peci_dimmtemp_chip_info = {
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.ops = &peci_dimmtemp_ops,
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.info = peci_dimmtemp_temp_info,
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};
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static int create_dimm_temp_info(struct peci_dimmtemp *priv)
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{
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int ret, i, channels;
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struct device *dev;
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/*
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* We expect to either find populated DIMMs and carry on with creating
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* sensors, or find out that there are no DIMMs populated.
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* All other states mean that the platform never reached the state that
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* allows to check DIMM state - causing us to retry later on.
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*/
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ret = check_populated_dimms(priv);
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if (ret == -ENODEV) {
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dev_dbg(priv->dev, "No DIMMs found\n");
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return 0;
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} else if (ret) {
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schedule_delayed_work(&priv->detect_work, DIMM_MASK_CHECK_DELAY_JIFFIES);
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dev_dbg(priv->dev, "Deferred populating DIMM temp info\n");
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return ret;
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}
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channels = priv->gen_info->chan_rank_max * priv->gen_info->dimm_idx_max;
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priv->dimmtemp_label = devm_kzalloc(priv->dev, channels * sizeof(char *), GFP_KERNEL);
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if (!priv->dimmtemp_label)
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return -ENOMEM;
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for_each_set_bit(i, priv->dimm_mask, DIMM_NUMS_MAX) {
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ret = create_dimm_temp_label(priv, i);
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if (ret)
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return ret;
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mutex_init(&priv->dimm[i].thresholds.state.lock);
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mutex_init(&priv->dimm[i].temp.state.lock);
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}
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dev = devm_hwmon_device_register_with_info(priv->dev, priv->name, priv,
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&peci_dimmtemp_chip_info, NULL);
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if (IS_ERR(dev)) {
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dev_err(priv->dev, "Failed to register hwmon device\n");
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return PTR_ERR(dev);
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}
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dev_dbg(priv->dev, "%s: sensor '%s'\n", dev_name(dev), priv->name);
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return 0;
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}
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static void create_dimm_temp_info_delayed(struct work_struct *work)
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{
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struct peci_dimmtemp *priv = container_of(to_delayed_work(work),
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struct peci_dimmtemp,
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detect_work);
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int ret;
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ret = create_dimm_temp_info(priv);
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if (ret && ret != -EAGAIN)
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dev_err(priv->dev, "Failed to populate DIMM temp info\n");
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}
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static void remove_delayed_work(void *_priv)
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{
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struct peci_dimmtemp *priv = _priv;
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cancel_delayed_work_sync(&priv->detect_work);
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}
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static int peci_dimmtemp_probe(struct auxiliary_device *adev, const struct auxiliary_device_id *id)
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{
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struct device *dev = &adev->dev;
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struct peci_device *peci_dev = to_peci_device(dev->parent);
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struct peci_dimmtemp *priv;
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int ret;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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|
||||
priv->name = devm_kasprintf(dev, GFP_KERNEL, "peci_dimmtemp.cpu%d",
|
||||
peci_dev->info.socket_id);
|
||||
if (!priv->name)
|
||||
return -ENOMEM;
|
||||
|
||||
priv->dev = dev;
|
||||
priv->peci_dev = peci_dev;
|
||||
priv->gen_info = (const struct dimm_info *)id->driver_data;
|
||||
|
||||
/*
|
||||
* This is just a sanity check. Since we're using commands that are
|
||||
* guaranteed to be supported on a given platform, we should never see
|
||||
* revision lower than expected.
|
||||
*/
|
||||
if (peci_dev->info.peci_revision < priv->gen_info->min_peci_revision)
|
||||
dev_warn(priv->dev,
|
||||
"Unexpected PECI revision %#x, some features may be unavailable\n",
|
||||
peci_dev->info.peci_revision);
|
||||
|
||||
INIT_DELAYED_WORK(&priv->detect_work, create_dimm_temp_info_delayed);
|
||||
|
||||
ret = devm_add_action_or_reset(priv->dev, remove_delayed_work, priv);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = create_dimm_temp_info(priv);
|
||||
if (ret && ret != -EAGAIN) {
|
||||
dev_err(dev, "Failed to populate DIMM temp info\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
read_thresholds_hsx(struct peci_dimmtemp *priv, int dimm_order, int chan_rank, u32 *data)
|
||||
{
|
||||
u8 dev, func;
|
||||
u16 reg;
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* Device 20, Function 0: IMC 0 channel 0 -> rank 0
|
||||
* Device 20, Function 1: IMC 0 channel 1 -> rank 1
|
||||
* Device 21, Function 0: IMC 0 channel 2 -> rank 2
|
||||
* Device 21, Function 1: IMC 0 channel 3 -> rank 3
|
||||
* Device 23, Function 0: IMC 1 channel 0 -> rank 4
|
||||
* Device 23, Function 1: IMC 1 channel 1 -> rank 5
|
||||
* Device 24, Function 0: IMC 1 channel 2 -> rank 6
|
||||
* Device 24, Function 1: IMC 1 channel 3 -> rank 7
|
||||
*/
|
||||
dev = 20 + chan_rank / 2 + chan_rank / 4;
|
||||
func = chan_rank % 2;
|
||||
reg = 0x120 + dimm_order * 4;
|
||||
|
||||
ret = peci_pci_local_read(priv->peci_dev, 1, dev, func, reg, data);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
read_thresholds_bdxd(struct peci_dimmtemp *priv, int dimm_order, int chan_rank, u32 *data)
|
||||
{
|
||||
u8 dev, func;
|
||||
u16 reg;
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* Device 10, Function 2: IMC 0 channel 0 -> rank 0
|
||||
* Device 10, Function 6: IMC 0 channel 1 -> rank 1
|
||||
* Device 12, Function 2: IMC 1 channel 0 -> rank 2
|
||||
* Device 12, Function 6: IMC 1 channel 1 -> rank 3
|
||||
*/
|
||||
dev = 10 + chan_rank / 2 * 2;
|
||||
func = (chan_rank % 2) ? 6 : 2;
|
||||
reg = 0x120 + dimm_order * 4;
|
||||
|
||||
ret = peci_pci_local_read(priv->peci_dev, 2, dev, func, reg, data);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
read_thresholds_skx(struct peci_dimmtemp *priv, int dimm_order, int chan_rank, u32 *data)
|
||||
{
|
||||
u8 dev, func;
|
||||
u16 reg;
|
||||
int ret;
|
||||
|
||||
/*
|
||||
* Device 10, Function 2: IMC 0 channel 0 -> rank 0
|
||||
* Device 10, Function 6: IMC 0 channel 1 -> rank 1
|
||||
* Device 11, Function 2: IMC 0 channel 2 -> rank 2
|
||||
* Device 12, Function 2: IMC 1 channel 0 -> rank 3
|
||||
* Device 12, Function 6: IMC 1 channel 1 -> rank 4
|
||||
* Device 13, Function 2: IMC 1 channel 2 -> rank 5
|
||||
*/
|
||||
dev = 10 + chan_rank / 3 * 2 + (chan_rank % 3 == 2 ? 1 : 0);
|
||||
func = chan_rank % 3 == 1 ? 6 : 2;
|
||||
reg = 0x120 + dimm_order * 4;
|
||||
|
||||
ret = peci_pci_local_read(priv->peci_dev, 2, dev, func, reg, data);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
read_thresholds_icx(struct peci_dimmtemp *priv, int dimm_order, int chan_rank, u32 *data)
|
||||
{
|
||||
u32 reg_val;
|
||||
u64 offset;
|
||||
int ret;
|
||||
u8 dev;
|
||||
|
||||
ret = peci_ep_pci_local_read(priv->peci_dev, 0, 13, 0, 2, 0xd4, ®_val);
|
||||
if (ret || !(reg_val & BIT(31)))
|
||||
return -ENODATA; /* Use default or previous value */
|
||||
|
||||
ret = peci_ep_pci_local_read(priv->peci_dev, 0, 13, 0, 2, 0xd0, ®_val);
|
||||
if (ret)
|
||||
return -ENODATA; /* Use default or previous value */
|
||||
|
||||
/*
|
||||
* Device 26, Offset 224e0: IMC 0 channel 0 -> rank 0
|
||||
* Device 26, Offset 264e0: IMC 0 channel 1 -> rank 1
|
||||
* Device 27, Offset 224e0: IMC 1 channel 0 -> rank 2
|
||||
* Device 27, Offset 264e0: IMC 1 channel 1 -> rank 3
|
||||
* Device 28, Offset 224e0: IMC 2 channel 0 -> rank 4
|
||||
* Device 28, Offset 264e0: IMC 2 channel 1 -> rank 5
|
||||
* Device 29, Offset 224e0: IMC 3 channel 0 -> rank 6
|
||||
* Device 29, Offset 264e0: IMC 3 channel 1 -> rank 7
|
||||
*/
|
||||
dev = 26 + chan_rank / 2;
|
||||
offset = 0x224e0 + dimm_order * 4 + (chan_rank % 2) * 0x4000;
|
||||
|
||||
ret = peci_mmio_read(priv->peci_dev, 0, GET_CPU_SEG(reg_val), GET_CPU_BUS(reg_val),
|
||||
dev, 0, offset, data);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct dimm_info dimm_hsx = {
|
||||
.chan_rank_max = CHAN_RANK_MAX_ON_HSX,
|
||||
.dimm_idx_max = DIMM_IDX_MAX_ON_HSX,
|
||||
.min_peci_revision = 0x33,
|
||||
.read_thresholds = &read_thresholds_hsx,
|
||||
};
|
||||
|
||||
static const struct dimm_info dimm_bdx = {
|
||||
.chan_rank_max = CHAN_RANK_MAX_ON_BDX,
|
||||
.dimm_idx_max = DIMM_IDX_MAX_ON_BDX,
|
||||
.min_peci_revision = 0x33,
|
||||
.read_thresholds = &read_thresholds_hsx,
|
||||
};
|
||||
|
||||
static const struct dimm_info dimm_bdxd = {
|
||||
.chan_rank_max = CHAN_RANK_MAX_ON_BDXD,
|
||||
.dimm_idx_max = DIMM_IDX_MAX_ON_BDXD,
|
||||
.min_peci_revision = 0x33,
|
||||
.read_thresholds = &read_thresholds_bdxd,
|
||||
};
|
||||
|
||||
static const struct dimm_info dimm_skx = {
|
||||
.chan_rank_max = CHAN_RANK_MAX_ON_SKX,
|
||||
.dimm_idx_max = DIMM_IDX_MAX_ON_SKX,
|
||||
.min_peci_revision = 0x33,
|
||||
.read_thresholds = &read_thresholds_skx,
|
||||
};
|
||||
|
||||
static const struct dimm_info dimm_icx = {
|
||||
.chan_rank_max = CHAN_RANK_MAX_ON_ICX,
|
||||
.dimm_idx_max = DIMM_IDX_MAX_ON_ICX,
|
||||
.min_peci_revision = 0x40,
|
||||
.read_thresholds = &read_thresholds_icx,
|
||||
};
|
||||
|
||||
static const struct dimm_info dimm_icxd = {
|
||||
.chan_rank_max = CHAN_RANK_MAX_ON_ICXD,
|
||||
.dimm_idx_max = DIMM_IDX_MAX_ON_ICXD,
|
||||
.min_peci_revision = 0x40,
|
||||
.read_thresholds = &read_thresholds_icx,
|
||||
};
|
||||
|
||||
static const struct auxiliary_device_id peci_dimmtemp_ids[] = {
|
||||
{
|
||||
.name = "peci_cpu.dimmtemp.hsx",
|
||||
.driver_data = (kernel_ulong_t)&dimm_hsx,
|
||||
},
|
||||
{
|
||||
.name = "peci_cpu.dimmtemp.bdx",
|
||||
.driver_data = (kernel_ulong_t)&dimm_bdx,
|
||||
},
|
||||
{
|
||||
.name = "peci_cpu.dimmtemp.bdxd",
|
||||
.driver_data = (kernel_ulong_t)&dimm_bdxd,
|
||||
},
|
||||
{
|
||||
.name = "peci_cpu.dimmtemp.skx",
|
||||
.driver_data = (kernel_ulong_t)&dimm_skx,
|
||||
},
|
||||
{
|
||||
.name = "peci_cpu.dimmtemp.icx",
|
||||
.driver_data = (kernel_ulong_t)&dimm_icx,
|
||||
},
|
||||
{
|
||||
.name = "peci_cpu.dimmtemp.icxd",
|
||||
.driver_data = (kernel_ulong_t)&dimm_icxd,
|
||||
},
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(auxiliary, peci_dimmtemp_ids);
|
||||
|
||||
static struct auxiliary_driver peci_dimmtemp_driver = {
|
||||
.probe = peci_dimmtemp_probe,
|
||||
.id_table = peci_dimmtemp_ids,
|
||||
};
|
||||
|
||||
module_auxiliary_driver(peci_dimmtemp_driver);
|
||||
|
||||
MODULE_AUTHOR("Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>");
|
||||
MODULE_AUTHOR("Iwona Winiarska <iwona.winiarska@intel.com>");
|
||||
MODULE_DESCRIPTION("PECI dimmtemp driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_IMPORT_NS(PECI_CPU);
|
||||
Loading…
Reference in New Issue
Block a user