diff options
Diffstat (limited to 'net/dsa')
| -rw-r--r-- | net/dsa/Kconfig | 11 | ||||
| -rw-r--r-- | net/dsa/dsa.c | 135 | ||||
| -rw-r--r-- | net/dsa/slave.c | 64 | ||||
| -rw-r--r-- | net/dsa/tag_dsa.c | 2 | ||||
| -rw-r--r-- | net/dsa/tag_edsa.c | 2 | ||||
| -rw-r--r-- | net/dsa/tag_trailer.c | 2 |
6 files changed, 210 insertions, 6 deletions
diff --git a/net/dsa/Kconfig b/net/dsa/Kconfig index a585fd6..5f8ac40 100644 --- a/net/dsa/Kconfig +++ b/net/dsa/Kconfig @@ -11,6 +11,17 @@ config NET_DSA if NET_DSA +config NET_DSA_HWMON + bool "Distributed Switch Architecture HWMON support" + default y + depends on HWMON && !(NET_DSA=y && HWMON=m) + ---help--- + Say Y if you want to expose thermal sensor data on switches supported + by the Distributed Switch Architecture. + + Some of those switches contain thermal sensors. This data is available + via the hwmon sysfs interface and exposes the onboard sensors. + # tagging formats config NET_DSA_TAG_BRCM bool diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index 6317b41..dd646a8 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -9,6 +9,9 @@ * (at your option) any later version. */ +#include <linux/ctype.h> +#include <linux/device.h> +#include <linux/hwmon.h> #include <linux/list.h> #include <linux/platform_device.h> #include <linux/slab.h> @@ -17,6 +20,7 @@ #include <linux/of.h> #include <linux/of_mdio.h> #include <linux/of_platform.h> +#include <linux/sysfs.h> #include "dsa_priv.h" char dsa_driver_version[] = "0.1"; @@ -71,6 +75,104 @@ dsa_switch_probe(struct device *host_dev, int sw_addr, char **_name) return ret; } +/* hwmon support ************************************************************/ + +#ifdef CONFIG_NET_DSA_HWMON + +static ssize_t temp1_input_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct dsa_switch *ds = dev_get_drvdata(dev); + int temp, ret; + + ret = ds->drv->get_temp(ds, &temp); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", temp * 1000); +} +static DEVICE_ATTR_RO(temp1_input); + +static ssize_t temp1_max_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct dsa_switch *ds = dev_get_drvdata(dev); + int temp, ret; + + ret = ds->drv->get_temp_limit(ds, &temp); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", temp * 1000); +} + +static ssize_t temp1_max_store(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct dsa_switch *ds = dev_get_drvdata(dev); + int temp, ret; + + ret = kstrtoint(buf, 0, &temp); + if (ret < 0) + return ret; + + ret = ds->drv->set_temp_limit(ds, DIV_ROUND_CLOSEST(temp, 1000)); + if (ret < 0) + return ret; + + return count; +} +static DEVICE_ATTR(temp1_max, S_IRUGO, temp1_max_show, temp1_max_store); + +static ssize_t temp1_max_alarm_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct dsa_switch *ds = dev_get_drvdata(dev); + bool alarm; + int ret; + + ret = ds->drv->get_temp_alarm(ds, &alarm); + if (ret < 0) + return ret; + + return sprintf(buf, "%d\n", alarm); +} +static DEVICE_ATTR_RO(temp1_max_alarm); + +static struct attribute *dsa_hwmon_attrs[] = { + &dev_attr_temp1_input.attr, /* 0 */ + &dev_attr_temp1_max.attr, /* 1 */ + &dev_attr_temp1_max_alarm.attr, /* 2 */ + NULL +}; + +static umode_t dsa_hwmon_attrs_visible(struct kobject *kobj, + struct attribute *attr, int index) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct dsa_switch *ds = dev_get_drvdata(dev); + struct dsa_switch_driver *drv = ds->drv; + umode_t mode = attr->mode; + + if (index == 1) { + if (!drv->get_temp_limit) + mode = 0; + else if (drv->set_temp_limit) + mode |= S_IWUSR; + } else if (index == 2 && !drv->get_temp_alarm) { + mode = 0; + } + return mode; +} + +static const struct attribute_group dsa_hwmon_group = { + .attrs = dsa_hwmon_attrs, + .is_visible = dsa_hwmon_attrs_visible, +}; +__ATTRIBUTE_GROUPS(dsa_hwmon); + +#endif /* CONFIG_NET_DSA_HWMON */ /* basic switch operations **************************************************/ static struct dsa_switch * @@ -228,6 +330,31 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index, ds->ports[i] = slave_dev; } +#ifdef CONFIG_NET_DSA_HWMON + /* If the switch provides a temperature sensor, + * register with hardware monitoring subsystem. + * Treat registration error as non-fatal and ignore it. + */ + if (drv->get_temp) { + const char *netname = netdev_name(dst->master_netdev); + char hname[IFNAMSIZ + 1]; + int i, j; + + /* Create valid hwmon 'name' attribute */ + for (i = j = 0; i < IFNAMSIZ && netname[i]; i++) { + if (isalnum(netname[i])) + hname[j++] = netname[i]; + } + hname[j] = '\0'; + scnprintf(ds->hwmon_name, sizeof(ds->hwmon_name), "%s_dsa%d", + hname, index); + ds->hwmon_dev = hwmon_device_register_with_groups(NULL, + ds->hwmon_name, ds, dsa_hwmon_groups); + if (IS_ERR(ds->hwmon_dev)) + ds->hwmon_dev = NULL; + } +#endif /* CONFIG_NET_DSA_HWMON */ + return ds; out_free: @@ -239,6 +366,10 @@ out: static void dsa_switch_destroy(struct dsa_switch *ds) { +#ifdef CONFIG_NET_DSA_HWMON + if (ds->hwmon_dev) + hwmon_device_unregister(ds->hwmon_dev); +#endif } #ifdef CONFIG_PM_SLEEP @@ -447,6 +578,7 @@ static int dsa_of_probe(struct platform_device *pdev) const char *port_name; int chip_index, port_index; const unsigned int *sw_addr, *port_reg; + u32 eeprom_len; int ret; mdio = of_parse_phandle(np, "dsa,mii-bus", 0); @@ -498,6 +630,9 @@ static int dsa_of_probe(struct platform_device *pdev) if (cd->sw_addr > PHY_MAX_ADDR) continue; + if (!of_property_read_u32(np, "eeprom-length", &eeprom_len)) + cd->eeprom_len = eeprom_len; + for_each_available_child_of_node(child, port) { port_reg = of_get_property(port, "reg", NULL); if (!port_reg) diff --git a/net/dsa/slave.c b/net/dsa/slave.c index ab03e00..0ea466d 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -249,6 +249,27 @@ static void dsa_slave_get_drvinfo(struct net_device *dev, strlcpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info)); } +static int dsa_slave_get_regs_len(struct net_device *dev) +{ + struct dsa_slave_priv *p = netdev_priv(dev); + struct dsa_switch *ds = p->parent; + + if (ds->drv->get_regs_len) + return ds->drv->get_regs_len(ds, p->port); + + return -EOPNOTSUPP; +} + +static void +dsa_slave_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *_p) +{ + struct dsa_slave_priv *p = netdev_priv(dev); + struct dsa_switch *ds = p->parent; + + if (ds->drv->get_regs) + ds->drv->get_regs(ds, p->port, regs, _p); +} + static int dsa_slave_nway_reset(struct net_device *dev) { struct dsa_slave_priv *p = netdev_priv(dev); @@ -271,6 +292,44 @@ static u32 dsa_slave_get_link(struct net_device *dev) return -EOPNOTSUPP; } +static int dsa_slave_get_eeprom_len(struct net_device *dev) +{ + struct dsa_slave_priv *p = netdev_priv(dev); + struct dsa_switch *ds = p->parent; + + if (ds->pd->eeprom_len) + return ds->pd->eeprom_len; + + if (ds->drv->get_eeprom_len) + return ds->drv->get_eeprom_len(ds); + + return 0; +} + +static int dsa_slave_get_eeprom(struct net_device *dev, + struct ethtool_eeprom *eeprom, u8 *data) +{ + struct dsa_slave_priv *p = netdev_priv(dev); + struct dsa_switch *ds = p->parent; + + if (ds->drv->get_eeprom) + return ds->drv->get_eeprom(ds, eeprom, data); + + return -EOPNOTSUPP; +} + +static int dsa_slave_set_eeprom(struct net_device *dev, + struct ethtool_eeprom *eeprom, u8 *data) +{ + struct dsa_slave_priv *p = netdev_priv(dev); + struct dsa_switch *ds = p->parent; + + if (ds->drv->set_eeprom) + return ds->drv->set_eeprom(ds, eeprom, data); + + return -EOPNOTSUPP; +} + static void dsa_slave_get_strings(struct net_device *dev, uint32_t stringset, uint8_t *data) { @@ -385,8 +444,13 @@ static const struct ethtool_ops dsa_slave_ethtool_ops = { .get_settings = dsa_slave_get_settings, .set_settings = dsa_slave_set_settings, .get_drvinfo = dsa_slave_get_drvinfo, + .get_regs_len = dsa_slave_get_regs_len, + .get_regs = dsa_slave_get_regs, .nway_reset = dsa_slave_nway_reset, .get_link = dsa_slave_get_link, + .get_eeprom_len = dsa_slave_get_eeprom_len, + .get_eeprom = dsa_slave_get_eeprom, + .set_eeprom = dsa_slave_set_eeprom, .get_strings = dsa_slave_get_strings, .get_ethtool_stats = dsa_slave_get_ethtool_stats, .get_sset_count = dsa_slave_get_sset_count, diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c index ce90c8b..2dab270 100644 --- a/net/dsa/tag_dsa.c +++ b/net/dsa/tag_dsa.c @@ -63,8 +63,6 @@ static netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev) dsa_header[3] = 0x00; } - skb->protocol = htons(ETH_P_DSA); - skb->dev = p->parent->dst->master_netdev; dev_queue_xmit(skb); diff --git a/net/dsa/tag_edsa.c b/net/dsa/tag_edsa.c index 94fcce7..9aeda59 100644 --- a/net/dsa/tag_edsa.c +++ b/net/dsa/tag_edsa.c @@ -76,8 +76,6 @@ static netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev) edsa_header[7] = 0x00; } - skb->protocol = htons(ETH_P_EDSA); - skb->dev = p->parent->dst->master_netdev; dev_queue_xmit(skb); diff --git a/net/dsa/tag_trailer.c b/net/dsa/tag_trailer.c index 115fdca..e268f9d 100644 --- a/net/dsa/tag_trailer.c +++ b/net/dsa/tag_trailer.c @@ -57,8 +57,6 @@ static netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev) trailer[2] = 0x10; trailer[3] = 0x00; - nskb->protocol = htons(ETH_P_TRAILER); - nskb->dev = p->parent->dst->master_netdev; dev_queue_xmit(nskb); |
