LXR linux/drivers/net/ethernet/ibm/emac/zmii.h

   1/*
   2 * drivers/net/ethernet/ibm/emac/zmii.h
   3 *
   4 * Driver for PowerPC 4xx on-chip ethernet controller, ZMII bridge support.
   5 *
   6 * Copyright 2007 Benjamin Herrenschmidt, IBM Corp.
   7 *                <benh@kernel.crashing.org>
   8 *
   9 * Based on the arch/ppc version of the driver:
  10 *
  11 * Copyright (c) 2004, 2005 Zultys Technologies.
  12 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
  13 *
  14 * Based on original work by
  15 *      Armin Kuster <akuster@mvista.com>
  16 *      Copyright 2001 MontaVista Softare Inc.
  17 *
  18 * This program is free software; you can redistribute  it and/or modify it
  19 * under  the terms of  the GNU General  Public License as published by the
  20 * Free Software Foundation;  either version 2 of the  License, or (at your
  21 * option) any later version.
  22 *
  23 */
  24#ifndef __IBM_NEWEMAC_ZMII_H
  25#define __IBM_NEWEMAC_ZMII_H
  26
  27/* ZMII bridge registers */
  28struct zmii_regs {
  29        u32 fer;                /* Function enable reg */
  30        u32 ssr;                /* Speed select reg */
  31        u32 smiirs;             /* SMII status reg */
  32};
  33
  34/* ZMII device */
  35struct zmii_instance {
  36        struct zmii_regs __iomem        *base;
  37
  38        /* Only one EMAC whacks us at a time */
  39        struct mutex                    lock;
  40
  41        /* subset of PHY_MODE_XXXX */
  42        int                             mode;
  43
  44        /* number of EMACs using this ZMII bridge */
  45        int                             users;
  46
  47        /* FER value left by firmware */
  48        u32                             fer_save;
  49
  50        /* OF device instance */
  51        struct platform_device          *ofdev;
  52};
  53
  54#ifdef CONFIG_IBM_EMAC_ZMII
  55
  56int zmii_init(void);
  57void zmii_exit(void);
  58int zmii_attach(struct platform_device *ofdev, int input, int *mode);
  59void zmii_detach(struct platform_device *ofdev, int input);
  60void zmii_get_mdio(struct platform_device *ofdev, int input);
  61void zmii_put_mdio(struct platform_device *ofdev, int input);
  62void zmii_set_speed(struct platform_device *ofdev, int input, int speed);
  63int zmii_get_regs_len(struct platform_device *ocpdev);
  64void *zmii_dump_regs(struct platform_device *ofdev, void *buf);
  65
  66#else
  67# define zmii_init()            0
  68# define zmii_exit()            do { } while(0)
  69# define zmii_attach(x,y,z)     (-ENXIO)
  70# define zmii_detach(x,y)       do { } while(0)
  71# define zmii_get_mdio(x,y)     do { } while(0)
  72# define zmii_put_mdio(x,y)     do { } while(0)
  73# define zmii_set_speed(x,y,z)  do { } while(0)
  74# define zmii_get_regs_len(x)   0
  75# define zmii_dump_regs(x,buf)  (buf)
  76#endif                          /* !CONFIG_IBM_EMAC_ZMII */
  77
  78#endif /* __IBM_NEWEMAC_ZMII_H */
  79