sfp: add sfp-bus to bridge between network devices and sfp cages
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index c43e5b9..4c16a10 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -38,6 +38,9 @@
obj-$(CONFIG_MDIO_THUNDER) += mdio-thunder.o
obj-$(CONFIG_MDIO_XGENE) += mdio-xgene.o
+sfp-obj-$(CONFIG_SFP) += sfp-bus.o
+obj-y += $(sfp-obj-y) $(sfp-obj-m)
+
obj-$(CONFIG_AMD_PHY) += amd.o
obj-$(CONFIG_AQUANTIA_PHY) += aquantia.o
obj-$(CONFIG_AT803X_PHY) += at803x.o
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index af61d7d..02082f4 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -21,6 +21,7 @@
#include <linux/spinlock.h>
#include <linux/workqueue.h>
+#include "sfp.h"
#include "swphy.h"
#define SUPPORTED_INTERFACES \
@@ -32,6 +33,7 @@
enum {
PHYLINK_DISABLE_STOPPED,
+ PHYLINK_DISABLE_LINK,
};
struct phylink {
@@ -54,6 +56,8 @@ struct phylink {
struct work_struct resolve;
bool mac_link_dropped;
+
+ struct sfp_bus *sfp_bus;
};
static inline void linkmode_zero(unsigned long *dst)
@@ -466,6 +470,24 @@ static void phylink_run_resolve(struct phylink *pl)
queue_work(system_power_efficient_wq, &pl->resolve);
}
+static const struct sfp_upstream_ops sfp_phylink_ops;
+
+static int phylink_register_sfp(struct phylink *pl, struct device_node *np)
+{
+ struct device_node *sfp_np;
+
+ sfp_np = of_parse_phandle(np, "sfp", 0);
+ if (!sfp_np)
+ return 0;
+
+ pl->sfp_bus = sfp_register_upstream(sfp_np, pl->netdev, pl,
+ &sfp_phylink_ops);
+ if (!pl->sfp_bus)
+ return -ENOMEM;
+
+ return 0;
+}
+
struct phylink *phylink_create(struct net_device *ndev, struct device_node *np,
phy_interface_t iface, const struct phylink_mac_ops *ops)
{
@@ -507,12 +529,21 @@ struct phylink *phylink_create(struct net_device *ndev, struct device_node *np,
}
}
+ ret = phylink_register_sfp(pl, np);
+ if (ret < 0) {
+ kfree(pl);
+ return ERR_PTR(ret);
+ }
+
return pl;
}
EXPORT_SYMBOL_GPL(phylink_create);
void phylink_destroy(struct phylink *pl)
{
+ if (pl->sfp_bus)
+ sfp_unregister_upstream(pl->sfp_bus);
+
cancel_work_sync(&pl->resolve);
kfree(pl);
}
@@ -706,6 +737,8 @@ void phylink_start(struct phylink *pl)
clear_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
phylink_run_resolve(pl);
+ if (pl->sfp_bus)
+ sfp_upstream_start(pl->sfp_bus);
if (pl->phydev)
phy_start(pl->phydev);
}
@@ -717,6 +750,8 @@ void phylink_stop(struct phylink *pl)
if (pl->phydev)
phy_stop(pl->phydev);
+ if (pl->sfp_bus)
+ sfp_upstream_stop(pl->sfp_bus);
set_bit(PHYLINK_DISABLE_STOPPED, &pl->phylink_disable_state);
flush_work(&pl->resolve);
@@ -1166,4 +1201,126 @@ int phylink_mii_ioctl(struct phylink *pl, struct ifreq *ifr, int cmd)
}
EXPORT_SYMBOL_GPL(phylink_mii_ioctl);
+
+
+static int phylink_sfp_module_insert(void *upstream,
+ const struct sfp_eeprom_id *id)
+{
+ struct phylink *pl = upstream;
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, };
+ struct phylink_link_state config;
+ phy_interface_t iface;
+ int mode, ret = 0;
+ bool changed;
+ u8 port;
+
+ sfp_parse_support(pl->sfp_bus, id, support);
+ port = sfp_parse_port(pl->sfp_bus, id, support);
+ iface = sfp_parse_interface(pl->sfp_bus, id);
+
+ WARN_ON(!lockdep_rtnl_is_held());
+
+ switch (iface) {
+ case PHY_INTERFACE_MODE_SGMII:
+ mode = MLO_AN_SGMII;
+ break;
+ case PHY_INTERFACE_MODE_1000BASEX:
+ mode = MLO_AN_8023Z;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ memset(&config, 0, sizeof(config));
+ linkmode_copy(config.advertising, support);
+ config.interface = iface;
+ config.speed = SPEED_UNKNOWN;
+ config.duplex = DUPLEX_UNKNOWN;
+ config.pause = MLO_PAUSE_AN;
+ config.an_enabled = pl->link_config.an_enabled;
+
+ /* Ignore errors if we're expecting a PHY to attach later */
+ ret = phylink_validate(pl, support, &config);
+ if (ret) {
+ netdev_err(pl->netdev, "validation of %s/%s with support %*pb failed: %d\n",
+ phylink_an_mode_str(mode), phy_modes(config.interface),
+ __ETHTOOL_LINK_MODE_MASK_NBITS, support, ret);
+ return ret;
+ }
+
+ netdev_dbg(pl->netdev, "requesting link mode %s/%s with support %*pb\n",
+ phylink_an_mode_str(mode), phy_modes(config.interface),
+ __ETHTOOL_LINK_MODE_MASK_NBITS, support);
+
+ if (mode == MLO_AN_8023Z && pl->phydev)
+ return -EINVAL;
+
+ changed = !bitmap_equal(pl->supported, support,
+ __ETHTOOL_LINK_MODE_MASK_NBITS);
+ if (changed) {
+ linkmode_copy(pl->supported, support);
+ linkmode_copy(pl->link_config.advertising, config.advertising);
+ }
+
+ if (pl->link_an_mode != mode ||
+ pl->link_config.interface != config.interface) {
+ pl->link_config.interface = config.interface;
+ pl->link_an_mode = mode;
+
+ changed = true;
+
+ netdev_info(pl->netdev, "switched to %s/%s link mode\n",
+ phylink_an_mode_str(mode),
+ phy_modes(config.interface));
+ }
+
+ pl->link_port = port;
+
+ if (changed && !test_bit(PHYLINK_DISABLE_STOPPED,
+ &pl->phylink_disable_state))
+ phylink_mac_config(pl, &pl->link_config);
+
+ return ret;
+}
+
+static void phylink_sfp_link_down(void *upstream)
+{
+ struct phylink *pl = upstream;
+
+ WARN_ON(!lockdep_rtnl_is_held());
+
+ set_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state);
+ flush_work(&pl->resolve);
+
+ netif_carrier_off(pl->netdev);
+}
+
+static void phylink_sfp_link_up(void *upstream)
+{
+ struct phylink *pl = upstream;
+
+ WARN_ON(!lockdep_rtnl_is_held());
+
+ clear_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state);
+ phylink_run_resolve(pl);
+}
+
+static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy)
+{
+ return phylink_connect_phy(upstream, phy);
+}
+
+static void phylink_sfp_disconnect_phy(void *upstream)
+{
+ phylink_disconnect_phy(upstream);
+}
+
+static const struct sfp_upstream_ops sfp_phylink_ops = {
+ .module_insert = phylink_sfp_module_insert,
+ .link_up = phylink_sfp_link_up,
+ .link_down = phylink_sfp_link_down,
+ .connect_phy = phylink_sfp_connect_phy,
+ .disconnect_phy = phylink_sfp_disconnect_phy,
+};
+
MODULE_LICENSE("GPL");
diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
new file mode 100644
index 0000000..5cb5384
--- /dev/null
+++ b/drivers/net/phy/sfp-bus.c
@@ -0,0 +1,475 @@
+#include <linux/export.h>
+#include <linux/kref.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/phylink.h>
+#include <linux/rtnetlink.h>
+#include <linux/slab.h>
+
+#include "sfp.h"
+
+struct sfp_bus {
+ struct kref kref;
+ struct list_head node;
+ struct device_node *device_node;
+
+ const struct sfp_socket_ops *socket_ops;
+ struct device *sfp_dev;
+ struct sfp *sfp;
+
+ const struct sfp_upstream_ops *upstream_ops;
+ void *upstream;
+ struct net_device *netdev;
+ struct phy_device *phydev;
+
+ bool registered;
+ bool started;
+};
+
+
+int sfp_parse_port(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
+ unsigned long *support)
+{
+ int port;
+
+ /* port is the physical connector, set this from the connector field. */
+ switch (id->base.connector) {
+ case SFP_CONNECTOR_SC:
+ case SFP_CONNECTOR_FIBERJACK:
+ case SFP_CONNECTOR_LC:
+ case SFP_CONNECTOR_MT_RJ:
+ case SFP_CONNECTOR_MU:
+ case SFP_CONNECTOR_OPTICAL_PIGTAIL:
+ if (support)
+ phylink_set(support, FIBRE);
+ port = PORT_FIBRE;
+ break;
+
+ case SFP_CONNECTOR_RJ45:
+ if (support)
+ phylink_set(support, TP);
+ port = PORT_TP;
+ break;
+
+ case SFP_CONNECTOR_UNSPEC:
+ if (id->base.e1000_base_t) {
+ if (support)
+ phylink_set(support, TP);
+ port = PORT_TP;
+ break;
+ }
+ /* fallthrough */
+ case SFP_CONNECTOR_SG: /* guess */
+ case SFP_CONNECTOR_MPO_1X12:
+ case SFP_CONNECTOR_MPO_2X16:
+ case SFP_CONNECTOR_HSSDC_II:
+ case SFP_CONNECTOR_COPPER_PIGTAIL:
+ case SFP_CONNECTOR_NOSEPARATE:
+ case SFP_CONNECTOR_MXC_2X16:
+ port = PORT_OTHER;
+ break;
+ default:
+ dev_warn(bus->sfp_dev, "SFP: unknown connector id 0x%02x\n",
+ id->base.connector);
+ port = PORT_OTHER;
+ break;
+ }
+
+ return port;
+}
+EXPORT_SYMBOL_GPL(sfp_parse_port);
+
+phy_interface_t sfp_parse_interface(struct sfp_bus *bus,
+ const struct sfp_eeprom_id *id)
+{
+ phy_interface_t iface;
+
+ /* Setting the serdes link mode is guesswork: there's no field in
+ * the EEPROM which indicates what mode should be used.
+ *
+ * If the module wants 64b66b, then it must be >= 10G.
+ *
+ * If it's a gigabit-only fiber module, it probably does not have
+ * a PHY, so switch to 802.3z negotiation mode. Otherwise, switch
+ * to SGMII mode (which is required to support non-gigabit speeds).
+ */
+ switch (id->base.encoding) {
+ case SFP_ENCODING_8472_64B66B:
+ iface = PHY_INTERFACE_MODE_10GKR;
+ break;
+
+ case SFP_ENCODING_8B10B:
+ if (!id->base.e1000_base_t &&
+ !id->base.e100_base_lx &&
+ !id->base.e100_base_fx)
+ iface = PHY_INTERFACE_MODE_1000BASEX;
+ else
+ iface = PHY_INTERFACE_MODE_SGMII;
+ break;
+
+ default:
+ iface = PHY_INTERFACE_MODE_NA;
+ dev_err(bus->sfp_dev,
+ "SFP module encoding does not support 8b10b nor 64b66b\n");
+ break;
+ }
+
+ return iface;
+}
+EXPORT_SYMBOL_GPL(sfp_parse_interface);
+
+void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
+ unsigned long *support)
+{
+ phylink_set(support, Autoneg);
+ phylink_set(support, Pause);
+ phylink_set(support, Asym_Pause);
+
+ /* Set ethtool support from the compliance fields. */
+ if (id->base.e10g_base_sr)
+ phylink_set(support, 10000baseSR_Full);
+ if (id->base.e10g_base_lr)
+ phylink_set(support, 10000baseLR_Full);
+ if (id->base.e10g_base_lrm)
+ phylink_set(support, 10000baseLRM_Full);
+ if (id->base.e10g_base_er)
+ phylink_set(support, 10000baseER_Full);
+ if (id->base.e1000_base_sx ||
+ id->base.e1000_base_lx ||
+ id->base.e1000_base_cx)
+ phylink_set(support, 1000baseX_Full);
+ if (id->base.e1000_base_t) {
+ phylink_set(support, 1000baseT_Half);
+ phylink_set(support, 1000baseT_Full);
+ }
+
+ switch (id->base.extended_cc) {
+ case 0x00: /* Unspecified */
+ break;
+ case 0x02: /* 100Gbase-SR4 or 25Gbase-SR */
+ phylink_set(support, 100000baseSR4_Full);
+ phylink_set(support, 25000baseSR_Full);
+ break;
+ case 0x03: /* 100Gbase-LR4 or 25Gbase-LR */
+ case 0x04: /* 100Gbase-ER4 or 25Gbase-ER */
+ phylink_set(support, 100000baseLR4_ER4_Full);
+ break;
+ case 0x0b: /* 100Gbase-CR4 or 25Gbase-CR CA-L */
+ case 0x0c: /* 25Gbase-CR CA-S */
+ case 0x0d: /* 25Gbase-CR CA-N */
+ phylink_set(support, 100000baseCR4_Full);
+ phylink_set(support, 25000baseCR_Full);
+ break;
+ default:
+ dev_warn(bus->sfp_dev,
+ "Unknown/unsupported extended compliance code: 0x%02x\n",
+ id->base.extended_cc);
+ break;
+ }
+
+ /* For fibre channel SFP, derive possible BaseX modes */
+ if (id->base.fc_speed_100 ||
+ id->base.fc_speed_200 ||
+ id->base.fc_speed_400) {
+ if (id->base.br_nominal >= 31)
+ phylink_set(support, 2500baseX_Full);
+ if (id->base.br_nominal >= 12)
+ phylink_set(support, 1000baseX_Full);
+ }
+
+ switch (id->base.connector) {
+ case SFP_CONNECTOR_SC:
+ case SFP_CONNECTOR_FIBERJACK:
+ case SFP_CONNECTOR_LC:
+ case SFP_CONNECTOR_MT_RJ:
+ case SFP_CONNECTOR_MU:
+ case SFP_CONNECTOR_OPTICAL_PIGTAIL:
+ break;
+
+ case SFP_CONNECTOR_UNSPEC:
+ if (id->base.e1000_base_t)
+ break;
+
+ case SFP_CONNECTOR_SG: /* guess */
+ case SFP_CONNECTOR_MPO_1X12:
+ case SFP_CONNECTOR_MPO_2X16:
+ case SFP_CONNECTOR_HSSDC_II:
+ case SFP_CONNECTOR_COPPER_PIGTAIL:
+ case SFP_CONNECTOR_NOSEPARATE:
+ case SFP_CONNECTOR_MXC_2X16:
+ default:
+ /* a guess at the supported link modes */
+ dev_warn(bus->sfp_dev,
+ "Guessing link modes, please report...\n");
+ phylink_set(support, 1000baseT_Half);
+ phylink_set(support, 1000baseT_Full);
+ break;
+ }
+}
+EXPORT_SYMBOL_GPL(sfp_parse_support);
+
+
+static LIST_HEAD(sfp_buses);
+static DEFINE_MUTEX(sfp_mutex);
+
+static const struct sfp_upstream_ops *sfp_get_upstream_ops(struct sfp_bus *bus)
+{
+ return bus->registered ? bus->upstream_ops : NULL;
+}
+
+static struct sfp_bus *sfp_bus_get(struct device_node *np)
+{
+ struct sfp_bus *sfp, *new, *found = NULL;
+
+ new = kzalloc(sizeof(*new), GFP_KERNEL);
+
+ mutex_lock(&sfp_mutex);
+
+ list_for_each_entry(sfp, &sfp_buses, node) {
+ if (sfp->device_node == np) {
+ kref_get(&sfp->kref);
+ found = sfp;
+ break;
+ }
+ }
+
+ if (!found && new) {
+ kref_init(&new->kref);
+ new->device_node = np;
+ list_add(&new->node, &sfp_buses);
+ found = new;
+ new = NULL;
+ }
+
+ mutex_unlock(&sfp_mutex);
+
+ kfree(new);
+
+ return found;
+}
+
+static void sfp_bus_release(struct kref *kref) __releases(sfp_mutex)
+{
+ struct sfp_bus *bus = container_of(kref, struct sfp_bus, kref);
+
+ list_del(&bus->node);
+ mutex_unlock(&sfp_mutex);
+ kfree(bus);
+}
+
+static void sfp_bus_put(struct sfp_bus *bus)
+{
+ kref_put_mutex(&bus->kref, sfp_bus_release, &sfp_mutex);
+}
+
+static int sfp_register_bus(struct sfp_bus *bus)
+{
+ const struct sfp_upstream_ops *ops = bus->upstream_ops;
+ int ret;
+
+ if (ops) {
+ if (ops->link_down)
+ ops->link_down(bus->upstream);
+ if (ops->connect_phy && bus->phydev) {
+ ret = ops->connect_phy(bus->upstream, bus->phydev);
+ if (ret)
+ return ret;
+ }
+ }
+ if (bus->started)
+ bus->socket_ops->start(bus->sfp);
+ bus->registered = true;
+ return 0;
+}
+
+static void sfp_unregister_bus(struct sfp_bus *bus)
+{
+ const struct sfp_upstream_ops *ops = bus->upstream_ops;
+
+ if (bus->registered) {
+ if (bus->started)
+ bus->socket_ops->stop(bus->sfp);
+ if (bus->phydev && ops && ops->disconnect_phy)
+ ops->disconnect_phy(bus->upstream);
+ }
+ bus->registered = false;
+}
+
+
+int sfp_get_module_info(struct sfp_bus *bus, struct ethtool_modinfo *modinfo)
+{
+ if (!bus->registered)
+ return -ENOIOCTLCMD;
+ return bus->socket_ops->module_info(bus->sfp, modinfo);
+}
+EXPORT_SYMBOL_GPL(sfp_get_module_info);
+
+int sfp_get_module_eeprom(struct sfp_bus *bus, struct ethtool_eeprom *ee,
+ u8 *data)
+{
+ if (!bus->registered)
+ return -ENOIOCTLCMD;
+ return bus->socket_ops->module_eeprom(bus->sfp, ee, data);
+}
+EXPORT_SYMBOL_GPL(sfp_get_module_eeprom);
+
+void sfp_upstream_start(struct sfp_bus *bus)
+{
+ if (bus->registered)
+ bus->socket_ops->start(bus->sfp);
+ bus->started = true;
+}
+EXPORT_SYMBOL_GPL(sfp_upstream_start);
+
+void sfp_upstream_stop(struct sfp_bus *bus)
+{
+ if (bus->registered)
+ bus->socket_ops->stop(bus->sfp);
+ bus->started = false;
+}
+EXPORT_SYMBOL_GPL(sfp_upstream_stop);
+
+struct sfp_bus *sfp_register_upstream(struct device_node *np,
+ struct net_device *ndev, void *upstream,
+ const struct sfp_upstream_ops *ops)
+{
+ struct sfp_bus *bus = sfp_bus_get(np);
+ int ret = 0;
+
+ if (bus) {
+ rtnl_lock();
+ bus->upstream_ops = ops;
+ bus->upstream = upstream;
+ bus->netdev = ndev;
+
+ if (bus->sfp)
+ ret = sfp_register_bus(bus);
+ rtnl_unlock();
+ }
+
+ if (ret) {
+ sfp_bus_put(bus);
+ bus = NULL;
+ }
+
+ return bus;
+}
+EXPORT_SYMBOL_GPL(sfp_register_upstream);
+
+void sfp_unregister_upstream(struct sfp_bus *bus)
+{
+ rtnl_lock();
+ sfp_unregister_bus(bus);
+ bus->upstream = NULL;
+ bus->netdev = NULL;
+ rtnl_unlock();
+
+ sfp_bus_put(bus);
+}
+EXPORT_SYMBOL_GPL(sfp_unregister_upstream);
+
+
+/* Socket driver entry points */
+int sfp_add_phy(struct sfp_bus *bus, struct phy_device *phydev)
+{
+ const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
+ int ret = 0;
+
+ if (ops && ops->connect_phy)
+ ret = ops->connect_phy(bus->upstream, phydev);
+
+ if (ret == 0)
+ bus->phydev = phydev;
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sfp_add_phy);
+
+void sfp_remove_phy(struct sfp_bus *bus)
+{
+ const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
+
+ if (ops && ops->disconnect_phy)
+ ops->disconnect_phy(bus->upstream);
+ bus->phydev = NULL;
+}
+EXPORT_SYMBOL_GPL(sfp_remove_phy);
+
+
+void sfp_link_up(struct sfp_bus *bus)
+{
+ const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
+
+ if (ops && ops->link_up)
+ ops->link_up(bus->upstream);
+}
+EXPORT_SYMBOL_GPL(sfp_link_up);
+
+void sfp_link_down(struct sfp_bus *bus)
+{
+ const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
+
+ if (ops && ops->link_down)
+ ops->link_down(bus->upstream);
+}
+EXPORT_SYMBOL_GPL(sfp_link_down);
+
+int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id)
+{
+ const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
+ int ret = 0;
+
+ if (ops && ops->module_insert)
+ ret = ops->module_insert(bus->upstream, id);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(sfp_module_insert);
+
+void sfp_module_remove(struct sfp_bus *bus)
+{
+ const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
+
+ if (ops && ops->module_remove)
+ ops->module_remove(bus->upstream);
+}
+EXPORT_SYMBOL_GPL(sfp_module_remove);
+
+struct sfp_bus *sfp_register_socket(struct device *dev, struct sfp *sfp,
+ const struct sfp_socket_ops *ops)
+{
+ struct sfp_bus *bus = sfp_bus_get(dev->of_node);
+ int ret = 0;
+
+ if (bus) {
+ rtnl_lock();
+ bus->sfp_dev = dev;
+ bus->sfp = sfp;
+ bus->socket_ops = ops;
+
+ if (bus->netdev)
+ ret = sfp_register_bus(bus);
+ rtnl_unlock();
+ }
+
+ if (ret) {
+ sfp_bus_put(bus);
+ bus = NULL;
+ }
+
+ return bus;
+}
+EXPORT_SYMBOL_GPL(sfp_register_socket);
+
+void sfp_unregister_socket(struct sfp_bus *bus)
+{
+ rtnl_lock();
+ sfp_unregister_bus(bus);
+ bus->sfp_dev = NULL;
+ bus->sfp = NULL;
+ bus->socket_ops = NULL;
+ rtnl_unlock();
+
+ sfp_bus_put(bus);
+}
+EXPORT_SYMBOL_GPL(sfp_unregister_socket);
diff --git a/drivers/net/phy/sfp.h b/drivers/net/phy/sfp.h
new file mode 100644
index 0000000..31b0acf
--- /dev/null
+++ b/drivers/net/phy/sfp.h
@@ -0,0 +1,28 @@
+#ifndef SFP_H
+#define SFP_H
+
+#include <linux/ethtool.h>
+#include <linux/sfp.h>
+
+struct sfp;
+
+struct sfp_socket_ops {
+ void (*start)(struct sfp *sfp);
+ void (*stop)(struct sfp *sfp);
+ int (*module_info)(struct sfp *sfp, struct ethtool_modinfo *modinfo);
+ int (*module_eeprom)(struct sfp *sfp, struct ethtool_eeprom *ee,
+ u8 *data);
+};
+
+int sfp_add_phy(struct sfp_bus *bus, struct phy_device *phydev);
+void sfp_remove_phy(struct sfp_bus *bus);
+void sfp_link_up(struct sfp_bus *bus);
+void sfp_link_down(struct sfp_bus *bus);
+int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id);
+void sfp_module_remove(struct sfp_bus *bus);
+int sfp_link_configure(struct sfp_bus *bus, const struct sfp_eeprom_id *id);
+struct sfp_bus *sfp_register_socket(struct device *dev, struct sfp *sfp,
+ const struct sfp_socket_ops *ops);
+void sfp_unregister_socket(struct sfp_bus *bus);
+
+#endif