diff mbox series

[net-next,v2,5/9] bnxt_en: Expose threshold temperatures through hwmon

Message ID 20230927035734.42816-6-michael.chan@broadcom.com (mailing list archive)
State Handled Elsewhere
Headers show
Series None | expand

Commit Message

Michael Chan Sept. 27, 2023, 3:57 a.m. UTC 
From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

HWRM_TEMP_MONITOR_QUERY response now indicates various
threshold temperatures. Expose these threshold temperatures
through the hwmon sysfs using this mapping:

hwmon_temp_max : bp->warn_thresh_temp
hwmon_temp_crit : bp->crit_thresh_temp
hwmon_temp_emergency : bp->fatal_thresh_temp

hwmon_temp_max_alarm : temp >= bp->warn_thresh_temp
hwmon_temp_crit_alarm : temp >= bp->crit_thresh_temp
hwmon_temp_emergency_alarm : temp >= bp->fatal_thresh_temp

Link: https://lore.kernel.org/netdev/20230815045658.80494-12-michael.chan@broadcom.com/
Cc: Jean Delvare <jdelvare@suse.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-hwmon@vger.kernel.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
---
v2:
bnxt_hwrm_temp_query() now stores the static threshold values once.
Use new hwmon temperature mappings shown above and remove hwmon_temp_lcrit.

---
 drivers/net/ethernet/broadcom/bnxt/bnxt.h     |  7 +++
 .../net/ethernet/broadcom/bnxt/bnxt_hwmon.c   | 57 ++++++++++++++++---
 2 files changed, 57 insertions(+), 7 deletions(-)

Comments

Guenter Roeck Sept. 27, 2023, 2:04 p.m. UTC | #1 
On Tue, Sep 26, 2023 at 08:57:30PM -0700, Michael Chan wrote:
> From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> 
> HWRM_TEMP_MONITOR_QUERY response now indicates various
> threshold temperatures. Expose these threshold temperatures
> through the hwmon sysfs using this mapping:
> 
> hwmon_temp_max : bp->warn_thresh_temp
> hwmon_temp_crit : bp->crit_thresh_temp
> hwmon_temp_emergency : bp->fatal_thresh_temp
> 
> hwmon_temp_max_alarm : temp >= bp->warn_thresh_temp
> hwmon_temp_crit_alarm : temp >= bp->crit_thresh_temp
> hwmon_temp_emergency_alarm : temp >= bp->fatal_thresh_temp
> 
> Link: https://lore.kernel.org/netdev/20230815045658.80494-12-michael.chan@broadcom.com/
> Cc: Jean Delvare <jdelvare@suse.com>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: linux-hwmon@vger.kernel.org
> Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> Signed-off-by: Michael Chan <michael.chan@broadcom.com>

Acked-by: Guenter Roeck <linux@roeck-us.net>

> ---
> v2:
> bnxt_hwrm_temp_query() now stores the static threshold values once.
> Use new hwmon temperature mappings shown above and remove hwmon_temp_lcrit.
> 
> ---
>  drivers/net/ethernet/broadcom/bnxt/bnxt.h     |  7 +++
>  .../net/ethernet/broadcom/bnxt/bnxt_hwmon.c   | 57 ++++++++++++++++---
>  2 files changed, 57 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
> index 84cbcfa61bc1..43a07d84f815 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
> @@ -2013,6 +2013,7 @@ struct bnxt {
>  	#define BNXT_FW_CAP_RING_MONITOR		BIT_ULL(30)
>  	#define BNXT_FW_CAP_DBG_QCAPS			BIT_ULL(31)
>  	#define BNXT_FW_CAP_PTP				BIT_ULL(32)
> +	#define BNXT_FW_CAP_THRESHOLD_TEMP_SUPPORTED	BIT_ULL(33)
>  
>  	u32			fw_dbg_cap;
>  
> @@ -2185,7 +2186,13 @@ struct bnxt {
>  	struct bnxt_tc_info	*tc_info;
>  	struct list_head	tc_indr_block_list;
>  	struct dentry		*debugfs_pdev;
> +#ifdef CONFIG_BNXT_HWMON
>  	struct device		*hwmon_dev;
> +	u8			warn_thresh_temp;
> +	u8			crit_thresh_temp;
> +	u8			fatal_thresh_temp;
> +	u8			shutdown_thresh_temp;
> +#endif
>  	enum board_idx		board_idx;
>  };
>  
> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
> index 05e3d75f3c43..6a2cad5cc159 100644
> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
> @@ -32,8 +32,16 @@ static int bnxt_hwrm_temp_query(struct bnxt *bp, u8 *temp)
>  	if (rc)
>  		goto drop_req;
>  
> -	*temp = resp->temp;
> -
> +	if (temp) {
> +		*temp = resp->temp;
> +	} else if (resp->flags &
> +		   TEMP_MONITOR_QUERY_RESP_FLAGS_THRESHOLD_VALUES_AVAILABLE) {
> +		bp->fw_cap |= BNXT_FW_CAP_THRESHOLD_TEMP_SUPPORTED;
> +		bp->warn_thresh_temp = resp->warn_threshold;
> +		bp->crit_thresh_temp = resp->critical_threshold;
> +		bp->fatal_thresh_temp = resp->fatal_threshold;
> +		bp->shutdown_thresh_temp = resp->shutdown_threshold;
> +	}
>  drop_req:
>  	hwrm_req_drop(bp, req);
>  	return rc;
> @@ -42,12 +50,23 @@ static int bnxt_hwrm_temp_query(struct bnxt *bp, u8 *temp)
>  static umode_t bnxt_hwmon_is_visible(const void *_data, enum hwmon_sensor_types type,
>  				     u32 attr, int channel)
>  {
> +	const struct bnxt *bp = _data;
> +
>  	if (type != hwmon_temp)
>  		return 0;
>  
>  	switch (attr) {
>  	case hwmon_temp_input:
>  		return 0444;
> +	case hwmon_temp_max:
> +	case hwmon_temp_crit:
> +	case hwmon_temp_emergency:
> +	case hwmon_temp_max_alarm:
> +	case hwmon_temp_crit_alarm:
> +	case hwmon_temp_emergency_alarm:
> +		if (!(bp->fw_cap & BNXT_FW_CAP_THRESHOLD_TEMP_SUPPORTED))
> +			return 0;
> +		return 0444;
>  	default:
>  		return 0;
>  	}
> @@ -66,13 +85,39 @@ static int bnxt_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32
>  		if (!rc)
>  			*val = temp * 1000;
>  		return rc;
> +	case hwmon_temp_max:
> +		*val = bp->warn_thresh_temp * 1000;
> +		return 0;
> +	case hwmon_temp_crit:
> +		*val = bp->crit_thresh_temp * 1000;
> +		return 0;
> +	case hwmon_temp_emergency:
> +		*val = bp->fatal_thresh_temp * 1000;
> +		return 0;
> +	case hwmon_temp_max_alarm:
> +		rc = bnxt_hwrm_temp_query(bp, &temp);
> +		if (!rc)
> +			*val = temp >= bp->warn_thresh_temp;
> +		return rc;
> +	case hwmon_temp_crit_alarm:
> +		rc = bnxt_hwrm_temp_query(bp, &temp);
> +		if (!rc)
> +			*val = temp >= bp->crit_thresh_temp;
> +		return rc;
> +	case hwmon_temp_emergency_alarm:
> +		rc = bnxt_hwrm_temp_query(bp, &temp);
> +		if (!rc)
> +			*val = temp >= bp->fatal_thresh_temp;
> +		return rc;
>  	default:
>  		return -EOPNOTSUPP;
>  	}
>  }
>  
>  static const struct hwmon_channel_info *bnxt_hwmon_info[] = {
> -	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
> +	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
> +			   HWMON_T_EMERGENCY | HWMON_T_MAX_ALARM |
> +			   HWMON_T_CRIT_ALARM | HWMON_T_EMERGENCY_ALARM),
>  	NULL
>  };
>  
> @@ -96,13 +141,11 @@ void bnxt_hwmon_uninit(struct bnxt *bp)
>  
>  void bnxt_hwmon_init(struct bnxt *bp)
>  {
> -	struct hwrm_temp_monitor_query_input *req;
>  	struct pci_dev *pdev = bp->pdev;
>  	int rc;
>  
> -	rc = hwrm_req_init(bp, req, HWRM_TEMP_MONITOR_QUERY);
> -	if (!rc)
> -		rc = hwrm_req_send_silent(bp, req);
> +	/* temp1_xxx is only sensor, ensure not registered if it will fail */
> +	rc = bnxt_hwrm_temp_query(bp, NULL);
>  	if (rc == -EACCES || rc == -EOPNOTSUPP) {
>  		bnxt_hwmon_uninit(bp);
>  		return;
> -- 
> 2.30.1
>
diff mbox series

Patch

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.h b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
index 84cbcfa61bc1..43a07d84f815 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.h
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.h
@@ -2013,6 +2013,7 @@  struct bnxt {
 	#define BNXT_FW_CAP_RING_MONITOR		BIT_ULL(30)
 	#define BNXT_FW_CAP_DBG_QCAPS			BIT_ULL(31)
 	#define BNXT_FW_CAP_PTP				BIT_ULL(32)
+	#define BNXT_FW_CAP_THRESHOLD_TEMP_SUPPORTED	BIT_ULL(33)
 
 	u32			fw_dbg_cap;
 
@@ -2185,7 +2186,13 @@  struct bnxt {
 	struct bnxt_tc_info	*tc_info;
 	struct list_head	tc_indr_block_list;
 	struct dentry		*debugfs_pdev;
+#ifdef CONFIG_BNXT_HWMON
 	struct device		*hwmon_dev;
+	u8			warn_thresh_temp;
+	u8			crit_thresh_temp;
+	u8			fatal_thresh_temp;
+	u8			shutdown_thresh_temp;
+#endif
 	enum board_idx		board_idx;
 };
 
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
index 05e3d75f3c43..6a2cad5cc159 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
@@ -32,8 +32,16 @@  static int bnxt_hwrm_temp_query(struct bnxt *bp, u8 *temp)
 	if (rc)
 		goto drop_req;
 
-	*temp = resp->temp;
-
+	if (temp) {
+		*temp = resp->temp;
+	} else if (resp->flags &
+		   TEMP_MONITOR_QUERY_RESP_FLAGS_THRESHOLD_VALUES_AVAILABLE) {
+		bp->fw_cap |= BNXT_FW_CAP_THRESHOLD_TEMP_SUPPORTED;
+		bp->warn_thresh_temp = resp->warn_threshold;
+		bp->crit_thresh_temp = resp->critical_threshold;
+		bp->fatal_thresh_temp = resp->fatal_threshold;
+		bp->shutdown_thresh_temp = resp->shutdown_threshold;
+	}
 drop_req:
 	hwrm_req_drop(bp, req);
 	return rc;
@@ -42,12 +50,23 @@  static int bnxt_hwrm_temp_query(struct bnxt *bp, u8 *temp)
 static umode_t bnxt_hwmon_is_visible(const void *_data, enum hwmon_sensor_types type,
 				     u32 attr, int channel)
 {
+	const struct bnxt *bp = _data;
+
 	if (type != hwmon_temp)
 		return 0;
 
 	switch (attr) {
 	case hwmon_temp_input:
 		return 0444;
+	case hwmon_temp_max:
+	case hwmon_temp_crit:
+	case hwmon_temp_emergency:
+	case hwmon_temp_max_alarm:
+	case hwmon_temp_crit_alarm:
+	case hwmon_temp_emergency_alarm:
+		if (!(bp->fw_cap & BNXT_FW_CAP_THRESHOLD_TEMP_SUPPORTED))
+			return 0;
+		return 0444;
 	default:
 		return 0;
 	}
@@ -66,13 +85,39 @@  static int bnxt_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32
 		if (!rc)
 			*val = temp * 1000;
 		return rc;
+	case hwmon_temp_max:
+		*val = bp->warn_thresh_temp * 1000;
+		return 0;
+	case hwmon_temp_crit:
+		*val = bp->crit_thresh_temp * 1000;
+		return 0;
+	case hwmon_temp_emergency:
+		*val = bp->fatal_thresh_temp * 1000;
+		return 0;
+	case hwmon_temp_max_alarm:
+		rc = bnxt_hwrm_temp_query(bp, &temp);
+		if (!rc)
+			*val = temp >= bp->warn_thresh_temp;
+		return rc;
+	case hwmon_temp_crit_alarm:
+		rc = bnxt_hwrm_temp_query(bp, &temp);
+		if (!rc)
+			*val = temp >= bp->crit_thresh_temp;
+		return rc;
+	case hwmon_temp_emergency_alarm:
+		rc = bnxt_hwrm_temp_query(bp, &temp);
+		if (!rc)
+			*val = temp >= bp->fatal_thresh_temp;
+		return rc;
 	default:
 		return -EOPNOTSUPP;
 	}
 }
 
 static const struct hwmon_channel_info *bnxt_hwmon_info[] = {
-	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT),
+	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT |
+			   HWMON_T_EMERGENCY | HWMON_T_MAX_ALARM |
+			   HWMON_T_CRIT_ALARM | HWMON_T_EMERGENCY_ALARM),
 	NULL
 };
 
@@ -96,13 +141,11 @@  void bnxt_hwmon_uninit(struct bnxt *bp)
 
 void bnxt_hwmon_init(struct bnxt *bp)
 {
-	struct hwrm_temp_monitor_query_input *req;
 	struct pci_dev *pdev = bp->pdev;
 	int rc;
 
-	rc = hwrm_req_init(bp, req, HWRM_TEMP_MONITOR_QUERY);
-	if (!rc)
-		rc = hwrm_req_send_silent(bp, req);
+	/* temp1_xxx is only sensor, ensure not registered if it will fail */
+	rc = bnxt_hwrm_temp_query(bp, NULL);
 	if (rc == -EACCES || rc == -EOPNOTSUPP) {
 		bnxt_hwmon_uninit(bp);
 		return;