kernel-ark/drivers/net/ibm_newemac/phy.h
David Gibson 1d3bb99648 Device tree aware EMAC driver
Based on BenH's earlier work, this is a new version of the EMAC driver
for the built-in ethernet found on PowerPC 4xx embedded CPUs.  The
same ASIC is also found in the Axon bridge chip.  This new version is
designed to work in the arch/powerpc tree, using the device tree to
probe the device, rather than the old and ugly arch/ppc OCP layer.

This driver is designed to sit alongside the old driver (that lies in
drivers/net/ibm_emac and this one in drivers/net/ibm_newemac).  The
old driver is left in place to support arch/ppc until arch/ppc itself
reaches its final demise (not too long now, with luck).

This driver still has a number of things that could do with cleaning
up, but I think they can be fixed up after merging.  Specifically:
	- Should be adjusted to properly use the dma mapping API.
Axon needs this.
	- Probe logic needs reworking, in conjuction with the general
probing code for of_platform devices.  The dependencies here between
EMAC, MAL, ZMII etc. make this complicated.  At present, it usually
works, because we initialize and register the sub-drivers before the
EMAC driver itself, and (being in driver code) runs after the devices
themselves have been instantiated from the device tree.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-10-10 16:51:52 -07:00

81 lines
2.4 KiB
C

/*
* drivers/net/ibm_newemac/phy.h
*
* Driver for PowerPC 4xx on-chip ethernet controller, PHY support
*
* Benjamin Herrenschmidt <benh@kernel.crashing.org>
* February 2003
*
* Minor additions by Eugene Surovegin <ebs@ebshome.net>, 2004
*
* 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 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_NEWEMAC_PHY_H
#define __IBM_NEWEMAC_PHY_H
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 or
0 for autodetect */
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;
u32 advertising; /* Ethtool ADVERTISED_* defines */
u32 features; /* Copied from mii_phy_def.features
or determined automaticaly */
int address; /* PHY address */
int mode; /* PHY mode */
/* 1: autoneg enabled, 0: disabled */
int autoneg;
/* forced speed & duplex (no autoneg)
* partner speed & duplex & pause (autoneg)
*/
int speed;
int duplex;
int pause;
int asym_pause;
/* Provided by host chip */
struct net_device *dev;
int (*mdio_read) (struct net_device * dev, int addr, int reg);
void (*mdio_write) (struct net_device * dev, int addr, 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
*/
int emac_mii_phy_probe(struct mii_phy *phy, int address);
int emac_mii_reset_phy(struct mii_phy *phy);
#endif /* __IBM_NEWEMAC_PHY_H */