diff options
Diffstat (limited to 'drivers/net/ibm_emac/ibm_emac_phy.h')
| -rw-r--r-- | drivers/net/ibm_emac/ibm_emac_phy.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/net/ibm_emac/ibm_emac_phy.h b/drivers/net/ibm_emac/ibm_emac_phy.h new file mode 100644 index 00000000000..61afbea9656 --- /dev/null +++ b/drivers/net/ibm_emac/ibm_emac_phy.h @@ -0,0 +1,137 @@ + +/* + * ibm_emac_phy.h + * + * + * Benjamin Herrenschmidt <benh@kernel.crashing.org> + * February 2003 + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 675 Mass Ave, Cambridge, MA 02139, USA. + * + * + * This file basically duplicates sungem_phy.{c,h} with different PHYs + * supported. I'm looking into merging that in a single mii layer more + * flexible than mii.c + */ + +#ifndef _IBM_EMAC_PHY_H_ +#define _IBM_EMAC_PHY_H_ + +/* + * PHY mode settings + * Used for multi-mode capable PHYs + */ +#define PHY_MODE_NA 0 +#define PHY_MODE_MII 1 +#define PHY_MODE_RMII 2 +#define PHY_MODE_SMII 3 +#define PHY_MODE_RGMII 4 +#define PHY_MODE_TBI 5 +#define PHY_MODE_GMII 6 +#define PHY_MODE_RTBI 7 +#define PHY_MODE_SGMII 8 + +/* + * PHY specific registers/values + */ + +/* CIS8201 */ +#define MII_CIS8201_EPCR 0x17 +#define EPCR_MODE_MASK 0x3000 +#define EPCR_GMII_MODE 0x0000 +#define EPCR_RGMII_MODE 0x1000 +#define EPCR_TBI_MODE 0x2000 +#define EPCR_RTBI_MODE 0x3000 + +struct mii_phy; + +/* Operations supported by any kind of PHY */ +struct mii_phy_ops { + int (*init) (struct mii_phy * phy); + int (*suspend) (struct mii_phy * phy, int wol_options); + int (*setup_aneg) (struct mii_phy * phy, u32 advertise); + int (*setup_forced) (struct mii_phy * phy, int speed, int fd); + int (*poll_link) (struct mii_phy * phy); + int (*read_link) (struct mii_phy * phy); +}; + +/* Structure used to statically define an mii/gii based PHY */ +struct mii_phy_def { + u32 phy_id; /* Concatenated ID1 << 16 | ID2 */ + u32 phy_id_mask; /* Significant bits */ + u32 features; /* Ethtool SUPPORTED_* defines */ + int magic_aneg; /* Autoneg does all speed test for us */ + const char *name; + const struct mii_phy_ops *ops; +}; + +/* An instance of a PHY, partially borrowed from mii_if_info */ +struct mii_phy { + struct mii_phy_def *def; + int advertising; + int mii_id; + + /* 1: autoneg enabled, 0: disabled */ + int autoneg; + + /* forced speed & duplex (no autoneg) + * partner speed & duplex & pause (autoneg) + */ + int speed; + int duplex; + int pause; + + /* PHY mode - if needed */ + int mode; + + /* Provided by host chip */ + struct net_device *dev; + int (*mdio_read) (struct net_device * dev, int mii_id, int reg); + void (*mdio_write) (struct net_device * dev, int mii_id, int reg, + int val); +}; + +/* Pass in a struct mii_phy with dev, mdio_read and mdio_write + * filled, the remaining fields will be filled on return + */ +extern int mii_phy_probe(struct mii_phy *phy, int mii_id); + +static inline int __phy_read(struct mii_phy *phy, int id, int reg) +{ + return phy->mdio_read(phy->dev, id, reg); +} + +static inline void __phy_write(struct mii_phy *phy, int id, int reg, int val) +{ + phy->mdio_write(phy->dev, id, reg, val); +} + +static inline int phy_read(struct mii_phy *phy, int reg) +{ + return phy->mdio_read(phy->dev, phy->mii_id, reg); +} + +static inline void phy_write(struct mii_phy *phy, int reg, int val) +{ + phy->mdio_write(phy->dev, phy->mii_id, reg, val); +} + +#endif /* _IBM_EMAC_PHY_H_ */ |