drivers/net/ibm_newemac/tah.h

   1 /*
   2  * drivers/net/ibm_newemac/tah.h
   3  *
   4  * Driver for PowerPC 4xx on-chip ethernet controller, TAH support.
   5  *
   6  * Copyright 2004 MontaVista Software, Inc.
   7  * Matt Porter <mporter@kernel.crashing.org>
   8  *
   9  * Copyright (c) 2005 Eugene Surovegin <ebs@ebshome.net>
  10  *
  11  * This program is free software; you can redistribute  it and/or modify it
  12  * under  the terms of  the GNU General  Public License as published by the
  13  * Free Software Foundation;  either version 2 of the  License, or (at your
  14  * option) any later version.
  15  */
  16
  17 #ifndef __IBM_NEWEMAC_TAH_H
  18 #define __IBM_NEWEMAC_TAH_H
  19
  20 /* TAH */
  21 struct tah_regs {
  22         u32 revid;
  23         u32 pad[3];
  24         u32 mr;
  25         u32 ssr0;
  26         u32 ssr1;
  27         u32 ssr2;
  28         u32 ssr3;
  29         u32 ssr4;
  30         u32 ssr5;
  31         u32 tsr;
  32 };
  33
  34
  35 /* TAH device */
  36 struct tah_instance {
  37         struct tah_regs __iomem         *base;
  38
  39         /* Only one EMAC whacks us at a time */
  40         struct mutex                    lock;
  41
  42         /* number of EMACs using this TAH */
  43         int                             users;
  44
  45         /* OF device instance */
  46         struct of_device                *ofdev;
  47 };
  48
  49
  50 /* TAH engine */
  51 #define TAH_MR_CVR              0x80000000
  52 #define TAH_MR_SR               0x40000000
  53 #define TAH_MR_ST_256           0x01000000
  54 #define TAH_MR_ST_512           0x02000000
  55 #define TAH_MR_ST_768           0x03000000
  56 #define TAH_MR_ST_1024          0x04000000
  57 #define TAH_MR_ST_1280          0x05000000
  58 #define TAH_MR_ST_1536          0x06000000
  59 #define TAH_MR_TFS_16KB         0x00000000
  60 #define TAH_MR_TFS_2KB          0x00200000
  61 #define TAH_MR_TFS_4KB          0x00400000
  62 #define TAH_MR_TFS_6KB          0x00600000
  63 #define TAH_MR_TFS_8KB          0x00800000
  64 #define TAH_MR_TFS_10KB         0x00a00000
  65 #define TAH_MR_DTFP             0x00100000
  66 #define TAH_MR_DIG              0x00080000
  67
  68 #ifdef CONFIG_IBM_NEW_EMAC_TAH
  69
  70 extern int tah_init(void);
  71 extern void tah_exit(void);
  72 extern int tah_attach(struct of_device *ofdev, int channel);
  73 extern void tah_detach(struct of_device *ofdev, int channel);
  74 extern void tah_reset(struct of_device *ofdev);
  75 extern int tah_get_regs_len(struct of_device *ofdev);
  76 extern void *tah_dump_regs(struct of_device *ofdev, void *buf);
  77
  78 #else
  79
  80 # define tah_init()             0
  81 # define tah_exit()             do { } while(0)
  82 # define tah_attach(x,y)        (-ENXIO)
  83 # define tah_detach(x,y)        do { } while(0)
  84 # define tah_reset(x)           do { } while(0)
  85 # define tah_get_regs_len(x)    0
  86 # define tah_dump_regs(x,buf)   (buf)
  87
  88 #endif                          /* !CONFIG_IBM_NEW_EMAC_TAH */
  89
  90 #endif /* __IBM_NEWEMAC_TAH_H */