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