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-rw-r--r--drivers/net/ethernet/netronome/nfp/Makefile1
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_hwmon.c192
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_main.c21
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfp_main.h10
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h2
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c8
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h12
-rw-r--r--drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_cmds.c47
8 files changed, 286 insertions, 7 deletions
diff --git a/drivers/net/ethernet/netronome/nfp/Makefile b/drivers/net/ethernet/netronome/nfp/Makefile
index 95f6b97b5d71..83039c65e061 100644
--- a/drivers/net/ethernet/netronome/nfp/Makefile
+++ b/drivers/net/ethernet/netronome/nfp/Makefile
@@ -16,6 +16,7 @@ nfp-objs := \
nfpcore/nfp_target.o \
nfp_app.o \
nfp_devlink.o \
+ nfp_hwmon.o \
nfp_main.o \
nfp_net_common.o \
nfp_net_ethtool.o \
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_hwmon.c b/drivers/net/ethernet/netronome/nfp/nfp_hwmon.c
new file mode 100644
index 000000000000..f0dcf45aeec1
--- /dev/null
+++ b/drivers/net/ethernet/netronome/nfp/nfp_hwmon.c
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2017 Netronome Systems, Inc.
+ *
+ * This software is dual licensed under the GNU General License Version 2,
+ * June 1991 as shown in the file COPYING in the top-level directory of this
+ * source tree or the BSD 2-Clause License provided below. You have the
+ * option to license this software under the complete terms of either license.
+ *
+ * The BSD 2-Clause License:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/bitops.h>
+#include <linux/hwmon.h>
+
+#include "nfpcore/nfp_cpp.h"
+#include "nfpcore/nfp_nsp.h"
+#include "nfp_main.h"
+
+#define NFP_TEMP_MAX (95 * 1000)
+#define NFP_TEMP_CRIT (105 * 1000)
+
+#define NFP_POWER_MAX (25 * 1000 * 1000)
+
+static int nfp_hwmon_sensor_id(enum hwmon_sensor_types type, int channel)
+{
+ if (type == hwmon_temp)
+ return NFP_SENSOR_CHIP_TEMPERATURE;
+ if (type == hwmon_power)
+ return NFP_SENSOR_ASSEMBLY_POWER + channel;
+ return -EINVAL;
+}
+
+static int
+nfp_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
+ int channel, long *val)
+{
+ static const struct {
+ enum hwmon_sensor_types type;
+ u32 attr;
+ long val;
+ } const_vals[] = {
+ { hwmon_temp, hwmon_temp_max, NFP_TEMP_MAX },
+ { hwmon_temp, hwmon_temp_crit, NFP_TEMP_CRIT },
+ { hwmon_power, hwmon_power_max, NFP_POWER_MAX },
+ };
+ struct nfp_pf *pf = dev_get_drvdata(dev);
+ enum nfp_nsp_sensor_id id;
+ int err, i;
+
+ for (i = 0; i < ARRAY_SIZE(const_vals); i++)
+ if (const_vals[i].type == type && const_vals[i].attr == attr) {
+ *val = const_vals[i].val;
+ return 0;
+ }
+
+ err = nfp_hwmon_sensor_id(type, channel);
+ if (err < 0)
+ return err;
+ id = err;
+
+ if (!(pf->nspi->sensor_mask & BIT(id)))
+ return -EOPNOTSUPP;
+
+ if (type == hwmon_temp && attr == hwmon_temp_input)
+ return nfp_hwmon_read_sensor(pf->cpp, id, val);
+ if (type == hwmon_power && attr == hwmon_power_input)
+ return nfp_hwmon_read_sensor(pf->cpp, id, val);
+
+ return -EINVAL;
+}
+
+static umode_t
+nfp_hwmon_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr,
+ int channel)
+{
+ if (type == hwmon_temp) {
+ switch (attr) {
+ case hwmon_temp_input:
+ case hwmon_temp_crit:
+ case hwmon_temp_max:
+ return 0444;
+ }
+ } else if (type == hwmon_power) {
+ switch (attr) {
+ case hwmon_power_input:
+ case hwmon_power_max:
+ return 0444;
+ }
+ }
+ return 0;
+}
+
+static u32 nfp_chip_config[] = {
+ HWMON_C_REGISTER_TZ,
+ 0
+};
+
+static const struct hwmon_channel_info nfp_chip = {
+ .type = hwmon_chip,
+ .config = nfp_chip_config,
+};
+
+static u32 nfp_temp_config[] = {
+ HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_CRIT,
+ 0
+};
+
+static const struct hwmon_channel_info nfp_temp = {
+ .type = hwmon_temp,
+ .config = nfp_temp_config,
+};
+
+static u32 nfp_power_config[] = {
+ HWMON_P_INPUT | HWMON_P_MAX,
+ HWMON_P_INPUT,
+ HWMON_P_INPUT,
+ 0
+};
+
+static const struct hwmon_channel_info nfp_power = {
+ .type = hwmon_power,
+ .config = nfp_power_config,
+};
+
+static const struct hwmon_channel_info *nfp_hwmon_info[] = {
+ &nfp_chip,
+ &nfp_temp,
+ &nfp_power,
+ NULL
+};
+
+static const struct hwmon_ops nfp_hwmon_ops = {
+ .is_visible = nfp_hwmon_is_visible,
+ .read = nfp_hwmon_read,
+};
+
+static const struct hwmon_chip_info nfp_chip_info = {
+ .ops = &nfp_hwmon_ops,
+ .info = nfp_hwmon_info,
+};
+
+int nfp_hwmon_register(struct nfp_pf *pf)
+{
+ if (!IS_REACHABLE(CONFIG_HWMON))
+ return 0;
+
+ if (!pf->nspi) {
+ nfp_warn(pf->cpp, "not registering HWMON (no NSP info)\n");
+ return 0;
+ }
+ if (!pf->nspi->sensor_mask) {
+ nfp_info(pf->cpp,
+ "not registering HWMON (NSP doesn't report sensors)\n");
+ return 0;
+ }
+
+ pf->hwmon_dev = hwmon_device_register_with_info(&pf->pdev->dev, "nfp",
+ pf, &nfp_chip_info,
+ NULL);
+ return PTR_ERR_OR_ZERO(pf->hwmon_dev);
+}
+
+void nfp_hwmon_unregister(struct nfp_pf *pf)
+{
+ if (!IS_REACHABLE(CONFIG_HWMON) || !pf->hwmon_dev)
+ return;
+
+ hwmon_device_unregister(pf->hwmon_dev);
+}
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_main.c b/drivers/net/ethernet/netronome/nfp/nfp_main.c
index ba174e163834..68cd34d5a9fb 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_main.c
+++ b/drivers/net/ethernet/netronome/nfp/nfp_main.c
@@ -257,7 +257,6 @@ exit_release_fw:
static int nfp_nsp_init(struct pci_dev *pdev, struct nfp_pf *pf)
{
- struct nfp_nsp_identify *nspi;
struct nfp_nsp *nsp;
int err;
@@ -274,11 +273,9 @@ static int nfp_nsp_init(struct pci_dev *pdev, struct nfp_pf *pf)
pf->eth_tbl = __nfp_eth_read_ports(pf->cpp, nsp);
- nspi = __nfp_nsp_identify(nsp);
- if (nspi) {
- dev_info(&pdev->dev, "BSP: %s\n", nspi->version);
- kfree(nspi);
- }
+ pf->nspi = __nfp_nsp_identify(nsp);
+ if (pf->nspi)
+ dev_info(&pdev->dev, "BSP: %s\n", pf->nspi->version);
err = nfp_fw_load(pdev, pf, nsp);
if (err < 0) {
@@ -383,14 +380,23 @@ static int nfp_pci_probe(struct pci_dev *pdev,
if (err)
goto err_sriov_unlimit;
+ err = nfp_hwmon_register(pf);
+ if (err) {
+ dev_err(&pdev->dev, "Failed to register hwmon info\n");
+ goto err_net_remove;
+ }
+
return 0;
+err_net_remove:
+ nfp_net_pci_remove(pf);
err_sriov_unlimit:
pci_sriov_set_totalvfs(pf->pdev, 0);
err_fw_unload:
if (pf->fw_loaded)
nfp_fw_unload(pf);
kfree(pf->eth_tbl);
+ kfree(pf->nspi);
err_devlink_unreg:
devlink_unregister(devlink);
err_cpp_free:
@@ -412,6 +418,8 @@ static void nfp_pci_remove(struct pci_dev *pdev)
struct nfp_pf *pf = pci_get_drvdata(pdev);
struct devlink *devlink;
+ nfp_hwmon_unregister(pf);
+
devlink = priv_to_devlink(pf);
nfp_net_pci_remove(pf);
@@ -428,6 +436,7 @@ static void nfp_pci_remove(struct pci_dev *pdev)
nfp_cpp_free(pf->cpp);
kfree(pf->eth_tbl);
+ kfree(pf->nspi);
mutex_destroy(&pf->lock);
devlink_free(devlink);
pci_release_regions(pdev);
diff --git a/drivers/net/ethernet/netronome/nfp/nfp_main.h b/drivers/net/ethernet/netronome/nfp/nfp_main.h
index 526db8029dea..20fad76da5aa 100644
--- a/drivers/net/ethernet/netronome/nfp/nfp_main.h
+++ b/drivers/net/ethernet/netronome/nfp/nfp_main.h
@@ -47,12 +47,14 @@
#include <linux/workqueue.h>
struct dentry;
+struct device;
struct devlink_ops;
struct pci_dev;
struct nfp_cpp;
struct nfp_cpp_area;
struct nfp_eth_table;
+struct nfp_nsp_identify;
/**
* struct nfp_pf - NFP PF-specific device structure
@@ -67,6 +69,8 @@ struct nfp_eth_table;
* @num_vfs: Number of SR-IOV VFs enabled
* @fw_loaded: Is the firmware loaded?
* @eth_tbl: NSP ETH table
+ * @nspi: NSP identification info
+ * @hwmon_dev: pointer to hwmon device
* @ddir: Per-device debugfs directory
* @max_data_vnics: Number of data vNICs app firmware supports
* @num_vnics: Number of vNICs spawned
@@ -94,6 +98,9 @@ struct nfp_pf {
bool fw_loaded;
struct nfp_eth_table *eth_tbl;
+ struct nfp_nsp_identify *nspi;
+
+ struct device *hwmon_dev;
struct dentry *ddir;
@@ -113,4 +120,7 @@ extern const struct devlink_ops nfp_devlink_ops;
int nfp_net_pci_probe(struct nfp_pf *pf);
void nfp_net_pci_remove(struct nfp_pf *pf);
+int nfp_hwmon_register(struct nfp_pf *pf);
+void nfp_hwmon_unregister(struct nfp_pf *pf);
+
#endif /* NFP_MAIN_H */
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h
index 4df2ce261b3f..94641b4c2c55 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp.h
@@ -64,6 +64,8 @@ int nfp_nsp_read_eth_table(struct nfp_nsp *state, void *buf, unsigned int size);
int nfp_nsp_write_eth_table(struct nfp_nsp *state,
const void *buf, unsigned int size);
int nfp_nsp_read_identify(struct nfp_nsp *state, void *buf, unsigned int size);
+int nfp_nsp_read_sensors(struct nfp_nsp *state, unsigned int sensor_mask,
+ void *buf, unsigned int size);
/* Implemented in nfp_resource.c */
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c
index 58cc3d532769..eefdb756d74e 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.c
@@ -93,6 +93,7 @@ enum nfp_nsp_cmd {
SPCODE_FW_LOAD = 6, /* Load fw from buffer, len in option */
SPCODE_ETH_RESCAN = 7, /* Rescan ETHs, write ETH_TABLE to buf */
SPCODE_ETH_CONTROL = 8, /* Update media config from buffer */
+ SPCODE_NSP_SENSORS = 12, /* Read NSP sensor(s) */
SPCODE_NSP_IDENTIFY = 13, /* Read NSP version */
};
@@ -506,3 +507,10 @@ int nfp_nsp_read_identify(struct nfp_nsp *state, void *buf, unsigned int size)
return nfp_nsp_command_buf(state, SPCODE_NSP_IDENTIFY, size, NULL, 0,
buf, size);
}
+
+int nfp_nsp_read_sensors(struct nfp_nsp *state, unsigned int sensor_mask,
+ void *buf, unsigned int size)
+{
+ return nfp_nsp_command_buf(state, SPCODE_NSP_SENSORS, sensor_mask,
+ NULL, 0, buf, size);
+}
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h
index 84a1d20adae1..26d7dcea4fd9 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp.h
@@ -160,6 +160,7 @@ int __nfp_eth_set_split(struct nfp_nsp *nsp, unsigned int lanes);
* @primary: version of primarary bootloader
* @secondary: version id of secondary bootloader
* @nsp: version id of NSP
+ * @sensor_mask: mask of present sensors available on NIC
*/
struct nfp_nsp_identify {
char version[40];
@@ -170,8 +171,19 @@ struct nfp_nsp_identify {
u16 primary;
u16 secondary;
u16 nsp;
+ u64 sensor_mask;
};
struct nfp_nsp_identify *__nfp_nsp_identify(struct nfp_nsp *nsp);
+enum nfp_nsp_sensor_id {
+ NFP_SENSOR_CHIP_TEMPERATURE,
+ NFP_SENSOR_ASSEMBLY_POWER,
+ NFP_SENSOR_ASSEMBLY_12V_POWER,
+ NFP_SENSOR_ASSEMBLY_3V3_POWER,
+};
+
+int nfp_hwmon_read_sensor(struct nfp_cpp *cpp, enum nfp_nsp_sensor_id id,
+ long *val);
+
#endif
diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_cmds.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_cmds.c
index e7a263de3731..5d362f87af08 100644
--- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_cmds.c
+++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_nsp_cmds.c
@@ -46,7 +46,8 @@ struct nsp_identify {
__le16 primary;
__le16 secondary;
__le16 nsp;
- __le16 reserved;
+ u8 reserved[6];
+ __le64 sensor_mask;
};
struct nfp_nsp_identify *__nfp_nsp_identify(struct nfp_nsp *nsp)
@@ -82,8 +83,52 @@ struct nfp_nsp_identify *__nfp_nsp_identify(struct nfp_nsp *nsp)
nspi->primary = le16_to_cpu(ni->primary);
nspi->secondary = le16_to_cpu(ni->secondary);
nspi->nsp = le16_to_cpu(ni->nsp);
+ nspi->sensor_mask = le64_to_cpu(ni->sensor_mask);
exit_free:
kfree(ni);
return nspi;
}
+
+struct nfp_sensors {
+ __le32 chip_temp;
+ __le32 assembly_power;
+ __le32 assembly_12v_power;
+ __le32 assembly_3v3_power;
+};
+
+int nfp_hwmon_read_sensor(struct nfp_cpp *cpp, enum nfp_nsp_sensor_id id,
+ long *val)
+{
+ struct nfp_sensors s;
+ struct nfp_nsp *nsp;
+ int ret;
+
+ nsp = nfp_nsp_open(cpp);
+ if (IS_ERR(nsp))
+ return PTR_ERR(nsp);
+
+ ret = nfp_nsp_read_sensors(nsp, BIT(id), &s, sizeof(s));
+ nfp_nsp_close(nsp);
+
+ if (ret < 0)
+ return ret;
+
+ switch (id) {
+ case NFP_SENSOR_CHIP_TEMPERATURE:
+ *val = le32_to_cpu(s.chip_temp);
+ break;
+ case NFP_SENSOR_ASSEMBLY_POWER:
+ *val = le32_to_cpu(s.assembly_power);
+ break;
+ case NFP_SENSOR_ASSEMBLY_12V_POWER:
+ *val = le32_to_cpu(s.assembly_12v_power);
+ break;
+ case NFP_SENSOR_ASSEMBLY_3V3_POWER:
+ *val = le32_to_cpu(s.assembly_3v3_power);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return 0;
+}