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/*
* drivers/net/ibm_newemac/zmii.h
*
* Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support.
*
* Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
* <benh@kernel.crashing.org>
*
* Based on the arch/ppc version of the driver:
*
* Copyright (c) 2004, 2005 Zultys Technologies.
* Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
*
* Based on original work by
* Armin Kuster <akuster@mvista.com>
* Copyright 2001 MontaVista Softare Inc.
*
* 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.
*
*/
#ifndef __IBM_NEWEMAC_ZMII_H
#define __IBM_NEWEMAC_ZMII_H
/* ZMII bridge registers */
struct zmii_regs {
u32 fer; /* Function enable reg */
u32 ssr; /* Speed select reg */
u32 smiirs; /* SMII status reg */
};
/* ZMII device */
struct zmii_instance {
struct zmii_regs __iomem *base;
/* Only one EMAC whacks us at a time */
struct mutex lock;
/* subset of PHY_MODE_XXXX */
int mode;
/* number of EMACs using this ZMII bridge */
int users;
/* FER value left by firmware */
u32 fer_save;
/* OF device instance */
struct of_device *ofdev;
};
#ifdef CONFIG_IBM_NEW_EMAC_ZMII
extern int zmii_init(void);
extern void zmii_exit(void);
extern int zmii_attach(struct of_device *ofdev, int input, int *mode);
extern void zmii_detach(struct of_device *ofdev, int input);
extern void zmii_get_mdio(struct of_device *ofdev, int input);
extern void zmii_put_mdio(struct of_device *ofdev, int input);
extern void zmii_set_speed(struct of_device *ofdev, int input, int speed);
extern int zmii_get_regs_len(struct of_device *ocpdev);
extern void *zmii_dump_regs(struct of_device *ofdev, void *buf);
#else
# define zmii_init() 0
# define zmii_exit() do { } while(0)
# define zmii_attach(x,y,z) (-ENXIO)
# define zmii_detach(x,y) do { } while(0)
# define zmii_get_mdio(x,y) do { } while(0)
# define zmii_put_mdio(x,y) do { } while(0)
# define zmii_set_speed(x,y,z) do { } while(0)
# define zmii_get_regs_len(x) 0
# define zmii_dump_regs(x,buf) (buf)
#endif /* !CONFIG_IBM_NEW_EMAC_ZMII */
#endif /* __IBM_NEWEMAC_ZMII_H */
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