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-rw-r--r--kernel/include/linux/mdio.h176
1 files changed, 176 insertions, 0 deletions
diff --git a/kernel/include/linux/mdio.h b/kernel/include/linux/mdio.h
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+++ b/kernel/include/linux/mdio.h
@@ -0,0 +1,176 @@
+/*
+ * linux/mdio.h: definitions for MDIO (clause 45) transceivers
+ * Copyright 2006-2009 Solarflare Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+#ifndef __LINUX_MDIO_H__
+#define __LINUX_MDIO_H__
+
+#include <uapi/linux/mdio.h>
+
+
+static inline bool mdio_phy_id_is_c45(int phy_id)
+{
+ return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK);
+}
+
+static inline __u16 mdio_phy_id_prtad(int phy_id)
+{
+ return (phy_id & MDIO_PHY_ID_PRTAD) >> 5;
+}
+
+static inline __u16 mdio_phy_id_devad(int phy_id)
+{
+ return phy_id & MDIO_PHY_ID_DEVAD;
+}
+
+/**
+ * struct mdio_if_info - Ethernet controller MDIO interface
+ * @prtad: PRTAD of the PHY (%MDIO_PRTAD_NONE if not present/unknown)
+ * @mmds: Mask of MMDs expected to be present in the PHY. This must be
+ * non-zero unless @prtad = %MDIO_PRTAD_NONE.
+ * @mode_support: MDIO modes supported. If %MDIO_SUPPORTS_C22 is set then
+ * MII register access will be passed through with @devad =
+ * %MDIO_DEVAD_NONE. If %MDIO_EMULATE_C22 is set then access to
+ * commonly used clause 22 registers will be translated into
+ * clause 45 registers.
+ * @dev: Net device structure
+ * @mdio_read: Register read function; returns value or negative error code
+ * @mdio_write: Register write function; returns 0 or negative error code
+ */
+struct mdio_if_info {
+ int prtad;
+ u32 mmds;
+ unsigned mode_support;
+
+ struct net_device *dev;
+ int (*mdio_read)(struct net_device *dev, int prtad, int devad,
+ u16 addr);
+ int (*mdio_write)(struct net_device *dev, int prtad, int devad,
+ u16 addr, u16 val);
+};
+
+#define MDIO_PRTAD_NONE (-1)
+#define MDIO_DEVAD_NONE (-1)
+#define MDIO_SUPPORTS_C22 1
+#define MDIO_SUPPORTS_C45 2
+#define MDIO_EMULATE_C22 4
+
+struct ethtool_cmd;
+struct ethtool_pauseparam;
+extern int mdio45_probe(struct mdio_if_info *mdio, int prtad);
+extern int mdio_set_flag(const struct mdio_if_info *mdio,
+ int prtad, int devad, u16 addr, int mask,
+ bool sense);
+extern int mdio45_links_ok(const struct mdio_if_info *mdio, u32 mmds);
+extern int mdio45_nway_restart(const struct mdio_if_info *mdio);
+extern void mdio45_ethtool_gset_npage(const struct mdio_if_info *mdio,
+ struct ethtool_cmd *ecmd,
+ u32 npage_adv, u32 npage_lpa);
+
+/**
+ * mdio45_ethtool_gset - get settings for ETHTOOL_GSET
+ * @mdio: MDIO interface
+ * @ecmd: Ethtool request structure
+ *
+ * Since the CSRs for auto-negotiation using next pages are not fully
+ * standardised, this function does not attempt to decode them. Use
+ * mdio45_ethtool_gset_npage() to specify advertisement bits from next
+ * pages.
+ */
+static inline void mdio45_ethtool_gset(const struct mdio_if_info *mdio,
+ struct ethtool_cmd *ecmd)
+{
+ mdio45_ethtool_gset_npage(mdio, ecmd, 0, 0);
+}
+
+extern int mdio_mii_ioctl(const struct mdio_if_info *mdio,
+ struct mii_ioctl_data *mii_data, int cmd);
+
+/**
+ * mmd_eee_cap_to_ethtool_sup_t
+ * @eee_cap: value of the MMD EEE Capability register
+ *
+ * A small helper function that translates MMD EEE Capability (3.20) bits
+ * to ethtool supported settings.
+ */
+static inline u32 mmd_eee_cap_to_ethtool_sup_t(u16 eee_cap)
+{
+ u32 supported = 0;
+
+ if (eee_cap & MDIO_EEE_100TX)
+ supported |= SUPPORTED_100baseT_Full;
+ if (eee_cap & MDIO_EEE_1000T)
+ supported |= SUPPORTED_1000baseT_Full;
+ if (eee_cap & MDIO_EEE_10GT)
+ supported |= SUPPORTED_10000baseT_Full;
+ if (eee_cap & MDIO_EEE_1000KX)
+ supported |= SUPPORTED_1000baseKX_Full;
+ if (eee_cap & MDIO_EEE_10GKX4)
+ supported |= SUPPORTED_10000baseKX4_Full;
+ if (eee_cap & MDIO_EEE_10GKR)
+ supported |= SUPPORTED_10000baseKR_Full;
+
+ return supported;
+}
+
+/**
+ * mmd_eee_adv_to_ethtool_adv_t
+ * @eee_adv: value of the MMD EEE Advertisement/Link Partner Ability registers
+ *
+ * A small helper function that translates the MMD EEE Advertisment (7.60)
+ * and MMD EEE Link Partner Ability (7.61) bits to ethtool advertisement
+ * settings.
+ */
+static inline u32 mmd_eee_adv_to_ethtool_adv_t(u16 eee_adv)
+{
+ u32 adv = 0;
+
+ if (eee_adv & MDIO_EEE_100TX)
+ adv |= ADVERTISED_100baseT_Full;
+ if (eee_adv & MDIO_EEE_1000T)
+ adv |= ADVERTISED_1000baseT_Full;
+ if (eee_adv & MDIO_EEE_10GT)
+ adv |= ADVERTISED_10000baseT_Full;
+ if (eee_adv & MDIO_EEE_1000KX)
+ adv |= ADVERTISED_1000baseKX_Full;
+ if (eee_adv & MDIO_EEE_10GKX4)
+ adv |= ADVERTISED_10000baseKX4_Full;
+ if (eee_adv & MDIO_EEE_10GKR)
+ adv |= ADVERTISED_10000baseKR_Full;
+
+ return adv;
+}
+
+/**
+ * ethtool_adv_to_mmd_eee_adv_t
+ * @adv: the ethtool advertisement settings
+ *
+ * A small helper function that translates ethtool advertisement settings
+ * to EEE advertisements for the MMD EEE Advertisement (7.60) and
+ * MMD EEE Link Partner Ability (7.61) registers.
+ */
+static inline u16 ethtool_adv_to_mmd_eee_adv_t(u32 adv)
+{
+ u16 reg = 0;
+
+ if (adv & ADVERTISED_100baseT_Full)
+ reg |= MDIO_EEE_100TX;
+ if (adv & ADVERTISED_1000baseT_Full)
+ reg |= MDIO_EEE_1000T;
+ if (adv & ADVERTISED_10000baseT_Full)
+ reg |= MDIO_EEE_10GT;
+ if (adv & ADVERTISED_1000baseKX_Full)
+ reg |= MDIO_EEE_1000KX;
+ if (adv & ADVERTISED_10000baseKX4_Full)
+ reg |= MDIO_EEE_10GKX4;
+ if (adv & ADVERTISED_10000baseKR_Full)
+ reg |= MDIO_EEE_10GKR;
+
+ return reg;
+}
+
+#endif /* __LINUX_MDIO_H__ */