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

   1/*
   2 * drivers/net/ethernet/ibm/emac/rgmii.h
   3 *
   4 * Driver for PowerPC 4xx on-chip ethernet controller, RGMII 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 * Based on ocp_zmii.h/ibm_emac_zmii.h
  12 * Armin Kuster akuster@mvista.com
  13 *
  14 * Copyright 2004 MontaVista Software, Inc.
  15 * Matt Porter <mporter@kernel.crashing.org>
  16 *
  17 * Copyright (c) 2004, 2005 Zultys Technologies.
  18 * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
  19 *
  20 * This program is free software; you can redistribute  it and/or modify it
  21 * under  the terms of  the GNU General  Public License as published by the
  22 * Free Software Foundation;  either version 2 of the  License, or (at your
  23 * option) any later version.
  24 */
  25
  26#ifndef __IBM_NEWEMAC_RGMII_H
  27#define __IBM_NEWEMAC_RGMII_H
  28
  29/* RGMII bridge type */
  30#define RGMII_STANDARD          0
  31#define RGMII_AXON              1
  32
  33/* RGMII bridge */
  34struct rgmii_regs {
  35        u32 fer;                /* Function enable register */
  36        u32 ssr;                /* Speed select register */
  37};
  38
  39/* RGMII device */
  40struct rgmii_instance {
  41        struct rgmii_regs __iomem       *base;
  42
  43        /* RGMII bridge flags */
  44        int                             flags;
  45#define EMAC_RGMII_FLAG_HAS_MDIO        0x00000001
  46
  47        /* Only one EMAC whacks us at a time */
  48        struct mutex                    lock;
  49
  50        /* number of EMACs using this RGMII bridge */
  51        int                             users;
  52
  53        /* OF device instance */
  54        struct platform_device          *ofdev;
  55};
  56
  57#ifdef CONFIG_IBM_EMAC_RGMII
  58
  59int rgmii_init(void);
  60void rgmii_exit(void);
  61int rgmii_attach(struct platform_device *ofdev, int input, int mode);
  62void rgmii_detach(struct platform_device *ofdev, int input);
  63void rgmii_get_mdio(struct platform_device *ofdev, int input);
  64void rgmii_put_mdio(struct platform_device *ofdev, int input);
  65void rgmii_set_speed(struct platform_device *ofdev, int input, int speed);
  66int rgmii_get_regs_len(struct platform_device *ofdev);
  67void *rgmii_dump_regs(struct platform_device *ofdev, void *buf);
  68
  69#else
  70
  71# define rgmii_init()           0
  72# define rgmii_exit()           do { } while(0)
  73# define rgmii_attach(x,y,z)    (-ENXIO)
  74# define rgmii_detach(x,y)      do { } while(0)
  75# define rgmii_get_mdio(o,i)    do { } while (0)
  76# define rgmii_put_mdio(o,i)    do { } while (0)
  77# define rgmii_set_speed(x,y,z) do { } while(0)
  78# define rgmii_get_regs_len(x)  0
  79# define rgmii_dump_regs(x,buf) (buf)
  80#endif                          /* !CONFIG_IBM_EMAC_RGMII */
  81
  82#endif /* __IBM_NEWEMAC_RGMII_H */
  83