diff options
Diffstat (limited to 'target/linux/mvebu/patches-4.9/416-phylink-add-hooks-for-SFP-support.patch')
| -rw-r--r-- | target/linux/mvebu/patches-4.9/416-phylink-add-hooks-for-SFP-support.patch | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-4.9/416-phylink-add-hooks-for-SFP-support.patch b/target/linux/mvebu/patches-4.9/416-phylink-add-hooks-for-SFP-support.patch new file mode 100644 index 0000000000..da44f75dbe --- /dev/null +++ b/target/linux/mvebu/patches-4.9/416-phylink-add-hooks-for-SFP-support.patch @@ -0,0 +1,177 @@ +From: Russell King <rmk+kernel@arm.linux.org.uk> +Date: Thu, 24 Sep 2015 11:01:13 +0100 +Subject: [PATCH] phylink: add hooks for SFP support + +Add support to phylink for SFP, which needs to control and configure +the ethernet MAC link state. Specifically, SFP needs to: + +1. set the negotiation mode between SGMII and 1000base-X +2. attach and detach the module PHY +3. prevent the link coming up when errors are reported + +In the absence of a PHY, we also need to set the ethtool port type +according to the module plugged in. + +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> + +- rework phylink_set_link_*(), combining into a single function. +--- + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -11,6 +11,7 @@ + #include <linux/ethtool.h> + #include <linux/export.h> + #include <linux/gpio/consumer.h> ++#include <linux/list.h> + #include <linux/netdevice.h> + #include <linux/of.h> + #include <linux/of_mdio.h> +@@ -29,11 +30,16 @@ + (ADVERTISED_TP | ADVERTISED_MII | ADVERTISED_FIBRE | \ + ADVERTISED_BNC | ADVERTISED_AUI | ADVERTISED_Backplane) + ++static LIST_HEAD(phylinks); ++static DEFINE_MUTEX(phylink_mutex); ++ + enum { + PHYLINK_DISABLE_STOPPED, ++ PHYLINK_DISABLE_LINK, + }; + + struct phylink { ++ struct list_head node; + struct net_device *netdev; + const struct phylink_mac_ops *ops; + struct mutex config_mutex; +@@ -375,12 +381,20 @@ struct phylink *phylink_create(struct ne + phylink_init_advert(pl, pl->link_an_mode, pl->supported, + pl->link_config.advertising); + ++ mutex_lock(&phylink_mutex); ++ list_add_tail(&pl->node, &phylinks); ++ mutex_unlock(&phylink_mutex); ++ + return pl; + } + EXPORT_SYMBOL_GPL(phylink_create); + + void phylink_destroy(struct phylink *pl) + { ++ mutex_lock(&phylink_mutex); ++ list_del(&pl->node); ++ mutex_unlock(&phylink_mutex); ++ + cancel_work_sync(&pl->resolve); + kfree(pl); + } +@@ -900,4 +914,93 @@ int phylink_mii_ioctl(struct phylink *pl + } + EXPORT_SYMBOL_GPL(phylink_mii_ioctl); + ++ ++ ++void phylink_disable(struct phylink *pl) ++{ ++ set_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state); ++ flush_work(&pl->resolve); ++ ++ netif_carrier_off(pl->netdev); ++} ++EXPORT_SYMBOL_GPL(phylink_disable); ++ ++void phylink_enable(struct phylink *pl) ++{ ++ clear_bit(PHYLINK_DISABLE_LINK, &pl->phylink_disable_state); ++ phylink_run_resolve(pl); ++} ++EXPORT_SYMBOL_GPL(phylink_enable); ++ ++int phylink_set_link(struct phylink *pl, unsigned int mode, u8 port, ++ const unsigned long *support) ++{ ++ __ETHTOOL_DECLARE_LINK_MODE_MASK(mask); ++ int ret = 0; ++ ++ netdev_dbg(pl->netdev, "requesting link mode %s with support %*pb\n", ++ phylink_an_mode_str(mode), ++ __ETHTOOL_LINK_MODE_MASK_NBITS, support); ++ ++ if (mode == MLO_AN_FIXED) ++ return -EINVAL; ++ ++ linkmode_copy(mask, support); ++ ++ /* Ignore errors if we're expecting a PHY to attach later */ ++ ret = phylink_validate_support(pl, mode, mask); ++ if (ret && mode != MLO_AN_PHY) ++ return ret; ++ ++ mutex_lock(&pl->config_mutex); ++ if (mode == MLO_AN_8023Z && pl->phydev) { ++ ret = -EINVAL; ++ } else { ++ bool changed = !bitmap_equal(pl->supported, mask, ++ __ETHTOOL_LINK_MODE_MASK_NBITS); ++ if (changed) { ++ linkmode_copy(pl->supported, mask); ++ ++ phylink_init_advert(pl, mode, mask, ++ pl->link_config.advertising); ++ } ++ ++ if (pl->link_an_mode != mode) { ++ pl->link_an_mode = mode; ++ ++ changed = true; ++ ++ netdev_info(pl->netdev, "switched to %s link mode\n", ++ phylink_an_mode_str(mode)); ++ } ++ ++ pl->link_port = port; ++ ++ if (changed && !test_bit(PHYLINK_DISABLE_STOPPED, ++ &pl->phylink_disable_state)) ++ phylink_mac_config(pl, &pl->link_config); ++ } ++ mutex_unlock(&pl->config_mutex); ++ ++ return ret; ++} ++EXPORT_SYMBOL_GPL(phylink_set_link); ++ ++struct phylink *phylink_lookup_by_netdev(struct net_device *ndev) ++{ ++ struct phylink *pl, *found = NULL; ++ ++ mutex_lock(&phylink_mutex); ++ list_for_each_entry(pl, &phylinks, node) ++ if (pl->netdev == ndev) { ++ found = pl; ++ break; ++ } ++ ++ mutex_unlock(&phylink_mutex); ++ ++ return found; ++} ++EXPORT_SYMBOL_GPL(phylink_lookup_by_netdev); ++ + MODULE_LICENSE("GPL"); +--- a/include/linux/phylink.h ++++ b/include/linux/phylink.h +@@ -88,6 +88,12 @@ int phylink_ethtool_ksettings_set(struct + const struct ethtool_link_ksettings *); + int phylink_mii_ioctl(struct phylink *, struct ifreq *, int); + ++int phylink_set_link(struct phylink *pl, unsigned int mode, u8 port, ++ const unsigned long *support); ++void phylink_disable(struct phylink *pl); ++void phylink_enable(struct phylink *pl); ++struct phylink *phylink_lookup_by_netdev(struct net_device *ndev); ++ + #define phylink_zero(bm) \ + bitmap_zero(bm, __ETHTOOL_LINK_MODE_MASK_NBITS) + #define __phylink_do_bit(op, bm, mode) \ |