Commit b1871915 authored by Ganesh Goudar's avatar Ganesh Goudar Committed by David S. Miller

cxgb4: Add thermal zone support

Add thermal zone support to monitor ASIC's temperature.
Signed-off-by: default avatarGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 27055454
...@@ -12,3 +12,4 @@ cxgb4-objs := cxgb4_main.o l2t.o smt.o t4_hw.o sge.o clip_tbl.o cxgb4_ethtool.o ...@@ -12,3 +12,4 @@ cxgb4-objs := cxgb4_main.o l2t.o smt.o t4_hw.o sge.o clip_tbl.o cxgb4_ethtool.o
cxgb4-$(CONFIG_CHELSIO_T4_DCB) += cxgb4_dcb.o cxgb4-$(CONFIG_CHELSIO_T4_DCB) += cxgb4_dcb.o
cxgb4-$(CONFIG_CHELSIO_T4_FCOE) += cxgb4_fcoe.o cxgb4-$(CONFIG_CHELSIO_T4_FCOE) += cxgb4_fcoe.o
cxgb4-$(CONFIG_DEBUG_FS) += cxgb4_debugfs.o cxgb4-$(CONFIG_DEBUG_FS) += cxgb4_debugfs.o
cxgb4-$(CONFIG_THERMAL) += cxgb4_thermal.o
...@@ -52,6 +52,7 @@ ...@@ -52,6 +52,7 @@
#include <linux/ptp_clock_kernel.h> #include <linux/ptp_clock_kernel.h>
#include <linux/ptp_classify.h> #include <linux/ptp_classify.h>
#include <linux/crash_dump.h> #include <linux/crash_dump.h>
#include <linux/thermal.h>
#include <asm/io.h> #include <asm/io.h>
#include "t4_chip_type.h" #include "t4_chip_type.h"
#include "cxgb4_uld.h" #include "cxgb4_uld.h"
...@@ -890,6 +891,14 @@ struct mps_encap_entry { ...@@ -890,6 +891,14 @@ struct mps_encap_entry {
atomic_t refcnt; atomic_t refcnt;
}; };
#ifdef CONFIG_THERMAL
struct ch_thermal {
struct thermal_zone_device *tzdev;
int trip_temp;
int trip_type;
};
#endif
struct adapter { struct adapter {
void __iomem *regs; void __iomem *regs;
void __iomem *bar2; void __iomem *bar2;
...@@ -1008,6 +1017,9 @@ struct adapter { ...@@ -1008,6 +1017,9 @@ struct adapter {
/* Dump buffer for collecting logs in kdump kernel */ /* Dump buffer for collecting logs in kdump kernel */
struct vmcoredd_data vmcoredd; struct vmcoredd_data vmcoredd;
#ifdef CONFIG_THERMAL
struct ch_thermal ch_thermal;
#endif
}; };
/* Support for "sched-class" command to allow a TX Scheduling Class to be /* Support for "sched-class" command to allow a TX Scheduling Class to be
...@@ -1862,4 +1874,10 @@ void cxgb4_ring_tx_db(struct adapter *adap, struct sge_txq *q, int n); ...@@ -1862,4 +1874,10 @@ void cxgb4_ring_tx_db(struct adapter *adap, struct sge_txq *q, int n);
int t4_set_vlan_acl(struct adapter *adap, unsigned int mbox, unsigned int vf, int t4_set_vlan_acl(struct adapter *adap, unsigned int mbox, unsigned int vf,
u16 vlan); u16 vlan);
int cxgb4_dcb_enabled(const struct net_device *dev); int cxgb4_dcb_enabled(const struct net_device *dev);
#ifdef CONFIG_THERMAL
int cxgb4_thermal_init(struct adapter *adap);
int cxgb4_thermal_remove(struct adapter *adap);
#endif /* CONFIG_THERMAL */
#endif /* __CXGB4_H__ */ #endif /* __CXGB4_H__ */
...@@ -5864,6 +5864,11 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) ...@@ -5864,6 +5864,11 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
if (!is_t4(adapter->params.chip)) if (!is_t4(adapter->params.chip))
cxgb4_ptp_init(adapter); cxgb4_ptp_init(adapter);
#ifdef CONFIG_THERMAL
if (!is_t4(adapter->params.chip) && (adapter->flags & FW_OK))
cxgb4_thermal_init(adapter);
#endif /* CONFIG_THERMAL */
print_adapter_info(adapter); print_adapter_info(adapter);
return 0; return 0;
...@@ -5929,6 +5934,9 @@ static void remove_one(struct pci_dev *pdev) ...@@ -5929,6 +5934,9 @@ static void remove_one(struct pci_dev *pdev)
if (!is_t4(adapter->params.chip)) if (!is_t4(adapter->params.chip))
cxgb4_ptp_stop(adapter); cxgb4_ptp_stop(adapter);
#ifdef CONFIG_THERMAL
cxgb4_thermal_remove(adapter);
#endif
/* If we allocated filters, free up state associated with any /* If we allocated filters, free up state associated with any
* valid filters ... * valid filters ...
......
/*
* Copyright (C) 2017 Chelsio Communications. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Written by: Ganesh Goudar (ganeshgr@chelsio.com)
*/
#include "cxgb4.h"
#define CXGB4_NUM_TRIPS 1
static int cxgb4_thermal_get_temp(struct thermal_zone_device *tzdev,
int *temp)
{
struct adapter *adap = tzdev->devdata;
u32 param, val;
int ret;
param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) |
FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_TMP));
ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1,
&param, &val);
if (ret < 0 || val == 0)
return -1;
*temp = val * 1000;
return 0;
}
static int cxgb4_thermal_get_trip_type(struct thermal_zone_device *tzdev,
int trip, enum thermal_trip_type *type)
{
struct adapter *adap = tzdev->devdata;
if (!adap->ch_thermal.trip_temp)
return -EINVAL;
*type = adap->ch_thermal.trip_type;
return 0;
}
static int cxgb4_thermal_get_trip_temp(struct thermal_zone_device *tzdev,
int trip, int *temp)
{
struct adapter *adap = tzdev->devdata;
if (!adap->ch_thermal.trip_temp)
return -EINVAL;
*temp = adap->ch_thermal.trip_temp;
return 0;
}
static struct thermal_zone_device_ops cxgb4_thermal_ops = {
.get_temp = cxgb4_thermal_get_temp,
.get_trip_type = cxgb4_thermal_get_trip_type,
.get_trip_temp = cxgb4_thermal_get_trip_temp,
};
int cxgb4_thermal_init(struct adapter *adap)
{
struct ch_thermal *ch_thermal = &adap->ch_thermal;
int num_trip = CXGB4_NUM_TRIPS;
u32 param, val;
int ret;
/* on older firmwares we may not get the trip temperature,
* set the num of trips to 0.
*/
param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DIAG) |
FW_PARAMS_PARAM_Y_V(FW_PARAM_DEV_DIAG_MAXTMPTHRESH));
ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1,
&param, &val);
if (ret < 0) {
num_trip = 0; /* could not get trip temperature */
} else {
ch_thermal->trip_temp = val * 1000;
ch_thermal->trip_type = THERMAL_TRIP_CRITICAL;
}
ch_thermal->tzdev = thermal_zone_device_register("cxgb4", num_trip,
0, adap,
&cxgb4_thermal_ops,
NULL, 0, 0);
if (IS_ERR(ch_thermal->tzdev)) {
ret = PTR_ERR(ch_thermal->tzdev);
dev_err(adap->pdev_dev, "Failed to register thermal zone\n");
ch_thermal->tzdev = NULL;
return ret;
}
return 0;
}
int cxgb4_thermal_remove(struct adapter *adap)
{
if (adap->ch_thermal.tzdev)
thermal_zone_device_unregister(adap->ch_thermal.tzdev);
return 0;
}
...@@ -1332,6 +1332,7 @@ enum fw_params_param_dev_phyfw { ...@@ -1332,6 +1332,7 @@ enum fw_params_param_dev_phyfw {
enum fw_params_param_dev_diag { enum fw_params_param_dev_diag {
FW_PARAM_DEV_DIAG_TMP = 0x00, FW_PARAM_DEV_DIAG_TMP = 0x00,
FW_PARAM_DEV_DIAG_VDD = 0x01, FW_PARAM_DEV_DIAG_VDD = 0x01,
FW_PARAM_DEV_DIAG_MAXTMPTHRESH = 0x02,
}; };
enum fw_params_param_dev_fwcache { enum fw_params_param_dev_fwcache {
......
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