rgmii.h

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/*
 * drivers/net/ethernet/ibm/emac/rgmii.h
 *
 * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
 *
 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
 *                <[email protected]>
 *
 * Based on the arch/ppc version of the driver:
 *
 * Based on ocp_zmii.h/ibm_emac_zmii.h
 * Armin Kuster [email protected]
 *
 * Copyright 2004 MontaVista Software, Inc.
 * Matt Porter <[email protected]>
 *
 * Copyright (c) 2004, 2005 Zultys Technologies.
 * Eugene Surovegin <[email protected]> or <[email protected]>
 *
 * 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_RGMII_H
#define __IBM_NEWEMAC_RGMII_H

/* RGMII bridge type */
#define RGMII_STANDARD      0
#define RGMII_AXON      1

/* RGMII bridge */
struct rgmii_regs {
    u32 fer;        /* Function enable register */
    u32 ssr;        /* Speed select register */
};

/* RGMII device */
struct rgmii_instance {
    struct rgmii_regs __iomem   *base;

    /* RGMII bridge flags */
    int             flags;
#define EMAC_RGMII_FLAG_HAS_MDIO    0x00000001

    /* Only one EMAC whacks us at a time */
    struct mutex            lock;

    /* number of EMACs using this RGMII bridge */
    int             users;

    /* OF device instance */
    struct platform_device      *ofdev;
};

#ifdef CONFIG_IBM_EMAC_RGMII

extern int rgmii_init(void);
extern void rgmii_exit(void);
extern int rgmii_attach(struct platform_device *ofdev, int input, int mode);
extern void rgmii_detach(struct platform_device *ofdev, int input);
extern void rgmii_get_mdio(struct platform_device *ofdev, int input);
extern void rgmii_put_mdio(struct platform_device *ofdev, int input);
extern void rgmii_set_speed(struct platform_device *ofdev, int input, int speed);
extern int rgmii_get_regs_len(struct platform_device *ofdev);
extern void *rgmii_dump_regs(struct platform_device *ofdev, void *buf);

#else

# define rgmii_init()       0
# define rgmii_exit()       do { } while(0)
# define rgmii_attach(x,y,z)    (-ENXIO)
# define rgmii_detach(x,y)  do { } while(0)
# define rgmii_get_mdio(o,i)    do { } while (0)
# define rgmii_put_mdio(o,i)    do { } while (0)
# define rgmii_set_speed(x,y,z) do { } while(0)
# define rgmii_get_regs_len(x)  0
# define rgmii_dump_regs(x,buf) (buf)
#endif              /* !CONFIG_IBM_EMAC_RGMII */

#endif /* __IBM_NEWEMAC_RGMII_H */