drivers/net/ibm_emac/ibm_emac_rgmii.h

   1 /*
   2  * drivers/net/ibm_emac/ibm_emac_rgmii.c
   3  *
   4  * Driver for PowerPC 4xx on-chip ethernet controller, RGMII bridge support.
   5  *
   6  * Based on ocp_zmii.h/ibm_emac_zmii.h
   7  * Armin Kuster akuster@mvista.com
   8  *
   9  * Copyright 2004 MontaVista Software, Inc.
  10  * Matt Porter <mporter@kernel.crashing.org>
  11  *
  12  * Copyright (c) 2004, 2005 Zultys Technologies.
  13  * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
  14  *
  15  * This program is free software; you can redistribute  it and/or modify it
  16  * under  the terms of  the GNU General  Public License as published by the
  17  * Free Software Foundation;  either version 2 of the  License, or (at your
  18  * option) any later version.
  19  */
  20
  21 #ifndef _IBM_EMAC_RGMII_H_
  22 #define _IBM_EMAC_RGMII_H_
  23
  24
  25 /* RGMII bridge */
  26 struct rgmii_regs {
  27         u32 fer;                /* Function enable register */
  28         u32 ssr;                /* Speed select register */
  29 };
  30
  31 /* RGMII device */
  32 struct ibm_ocp_rgmii {
  33         struct rgmii_regs __iomem *base;
  34         int users;              /* number of EMACs using this RGMII bridge */
  35 };
  36
  37 #ifdef CONFIG_IBM_EMAC_RGMII
  38 int rgmii_attach(void *emac) __init;
  39
  40 void __rgmii_fini(struct ocp_device *ocpdev, int input) __exit;
  41 static inline void rgmii_fini(struct ocp_device *ocpdev, int input)
  42 {
  43         if (ocpdev)
  44                 __rgmii_fini(ocpdev, input);
  45 }
  46
  47 void rgmii_set_speed(struct ocp_device *ocpdev, int input, int speed);
  48
  49 int __rgmii_get_regs_len(struct ocp_device *ocpdev);
  50 static inline int rgmii_get_regs_len(struct ocp_device *ocpdev)
  51 {
  52         return ocpdev ? __rgmii_get_regs_len(ocpdev) : 0;
  53 }
  54
  55 void *rgmii_dump_regs(struct ocp_device *ocpdev, void *buf);
  56 #else
  57 # define rgmii_attach(x)        0
  58 # define rgmii_fini(x,y)        ((void)0)
  59 # define rgmii_set_speed(x,y,z) ((void)0)
  60 # define rgmii_get_regs_len(x)  0
  61 # define rgmii_dump_regs(x,buf) (buf)
  62 #endif                          /* !CONFIG_IBM_EMAC_RGMII */
  63
  64 #endif                          /* _IBM_EMAC_RGMII_H_ */