drivers/net/ibm_newemac/rgmii.h

   1 /*
   2  * drivers/net/ibm_newemac/rgmii.h
   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_NEWEMAC_RGMII_H
  22 #define __IBM_NEWEMAC_RGMII_H
  23
  24 /* RGMII bridge type */
  25 #define RGMII_STANDARD          0
  26 #define RGMII_AXON              1
  27
  28 /* RGMII bridge */
  29 struct rgmii_regs {
  30         u32 fer;                /* Function enable register */
  31         u32 ssr;                /* Speed select register */
  32 };
  33
  34 /* RGMII device */
  35 struct rgmii_instance {
  36         struct rgmii_regs __iomem       *base;
  37
  38         /* Type of RGMII bridge */
  39         int                             type;
  40
  41         /* Only one EMAC whacks us at a time */
  42         struct mutex                    lock;
  43
  44         /* number of EMACs using this RGMII bridge */
  45         int                             users;
  46
  47         /* OF device instance */
  48         struct of_device                *ofdev;
  49 };
  50
  51 #ifdef CONFIG_IBM_NEW_EMAC_RGMII
  52
  53 extern int rgmii_init(void);
  54 extern void rgmii_exit(void);
  55 extern int rgmii_attach(struct of_device *ofdev, int input, int mode);
  56 extern void rgmii_detach(struct of_device *ofdev, int input);
  57 extern void rgmii_get_mdio(struct of_device *ofdev, int input);
  58 extern void rgmii_put_mdio(struct of_device *ofdev, int input);
  59 extern void rgmii_set_speed(struct of_device *ofdev, int input, int speed);
  60 extern int rgmii_get_regs_len(struct of_device *ofdev);
  61 extern void *rgmii_dump_regs(struct of_device *ofdev, void *buf);
  62
  63 #else
  64
  65 # define rgmii_init()           0
  66 # define rgmii_exit()           do { } while(0)
  67 # define rgmii_attach(x,y,z)    (-ENXIO)
  68 # define rgmii_detach(x,y)      do { } while(0)
  69 # define rgmii_get_mdio(o,i)    do { } while (0)
  70 # define rgmii_put_mdio(o,i)    do { } while (0)
  71 # define rgmii_set_speed(x,y,z) do { } while(0)
  72 # define rgmii_get_regs_len(x)  0
  73 # define rgmii_dump_regs(x,buf) (buf)
  74 #endif                          /* !CONFIG_IBM_NEW_EMAC_RGMII */
  75
  76 #endif /* __IBM_NEWEMAC_RGMII_H */