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Message-Id: <20230815045658.80494-12-michael.chan@broadcom.com>
Date: Mon, 14 Aug 2023 21:56:57 -0700
From: Michael Chan <michael.chan@...adcom.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
gospo@...adcom.com,
Kalesh AP <kalesh-anakkur.purayil@...adcom.com>,
Jean Delvare <jdelvare@...e.com>,
Guenter Roeck <linux@...ck-us.net>,
linux-hwmon@...r.kernel.org
Subject: [PATCH net-next 11/12] bnxt_en: Expose threshold temperatures through hwmon
From: Kalesh AP <kalesh-anakkur.purayil@...adcom.com>
HWRM_TEMP_MONITOR_QUERY response now indicates various
threshold temperatures. Expose these threshold temperatures
through the hwmon sysfs.
Also, provide temp1_max_alarm through which the user can check
whether the threshold temperature has been reached or not.
Example:
cat /sys/class/hwmon/hwmon3/temp1_input
75000
cat /sys/class/hwmon/hwmon3/temp1_max
105000
cat /sys/class/hwmon/hwmon3/temp1_max_alarm
0
Cc: Jean Delvare <jdelvare@...e.com>
Cc: Guenter Roeck <linux@...ck-us.net>
Cc: linux-hwmon@...r.kernel.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@...adcom.com>
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.h | 7 ++
.../net/ethernet/broadcom/bnxt/bnxt_hwmon.c | 71 +++++++++++++++++--
2 files changed, 73 insertions(+), 5 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 20381b7b1d78..f5affac1169a 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_hwmon.c
@@ -34,6 +34,15 @@ static int bnxt_hwrm_temp_query(struct bnxt *bp, u8 *temp)
if (temp)
*temp = resp->temp;
+
+ if (resp->flags & TEMP_MONITOR_QUERY_RESP_FLAGS_THRESHOLD_VALUES_AVAILABLE) {
+ if (!temp)
+ 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;
+ }
err:
hwrm_req_drop(bp, req);
return rc;
@@ -42,12 +51,30 @@ 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_lcrit:
+ case hwmon_temp_crit:
+ case hwmon_temp_emergency:
+ case hwmon_temp_lcrit_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;
+ /* Max temperature setting in NVM is optional */
+ case hwmon_temp_max:
+ case hwmon_temp_max_alarm:
+ if (~bp->fw_cap & BNXT_FW_CAP_THRESHOLD_TEMP_SUPPORTED ||
+ !bp->shutdown_thresh_temp)
+ return 0;
+ return 0444;
default:
return 0;
}
@@ -66,6 +93,38 @@ static int bnxt_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32
if (!rc)
*val = temp * 1000;
return rc;
+ case hwmon_temp_lcrit:
+ *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:
+ *val = bp->shutdown_thresh_temp * 1000;
+ return 0;
+ case hwmon_temp_lcrit_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;
+ case hwmon_temp_max_alarm:
+ rc = bnxt_hwrm_temp_query(bp, &temp);
+ if (!rc)
+ *val = temp >= bp->shutdown_thresh_temp;
+ return rc;
default:
return -EOPNOTSUPP;
}
@@ -73,7 +132,11 @@ static int bnxt_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32
static const struct hwmon_channel_info *bnxt_hwmon_info[] = {
HWMON_CHANNEL_INFO(temp,
- HWMON_T_INPUT),
+ HWMON_T_INPUT |
+ HWMON_T_MAX | HWMON_T_LCRIT |
+ HWMON_T_CRIT | HWMON_T_EMERGENCY |
+ HWMON_T_CRIT_ALARM | HWMON_T_LCRIT_ALARM |
+ HWMON_T_MAX_ALARM | HWMON_T_EMERGENCY_ALARM),
NULL
};
@@ -97,13 +160,11 @@ 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
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