arch/arm/kernel/ecard.h

   1 /*
   2  *  ecard.h
   3  *
   4  *  Copyright 2007 Russell King
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 /* Definitions internal to ecard.c - for it's use only!!
  12  *
  13  * External expansion card header as read from the card
  14  */
  15 struct ex_ecid {
  16         unsigned char   r_irq:1;
  17         unsigned char   r_zero:1;
  18         unsigned char   r_fiq:1;
  19         unsigned char   r_id:4;
  20         unsigned char   r_a:1;
  21
  22         unsigned char   r_cd:1;
  23         unsigned char   r_is:1;
  24         unsigned char   r_w:2;
  25         unsigned char   r_r1:4;
  26
  27         unsigned char   r_r2:8;
  28
  29         unsigned char   r_prod[2];
  30
  31         unsigned char   r_manu[2];
  32
  33         unsigned char   r_country;
  34
  35         unsigned char   r_fiqmask;
  36         unsigned char   r_fiqoff[3];
  37
  38         unsigned char   r_irqmask;
  39         unsigned char   r_irqoff[3];
  40 };
  41
  42 /*
  43  * Chunk directory entry as read from the card
  44  */
  45 struct ex_chunk_dir {
  46         unsigned char r_id;
  47         unsigned char r_len[3];
  48         unsigned long r_start;
  49         union {
  50                 char string[256];
  51                 char data[1];
  52         } d;
  53 #define c_id(x)         ((x)->r_id)
  54 #define c_len(x)        ((x)->r_len[0]|((x)->r_len[1]<<8)|((x)->r_len[2]<<16))
  55 #define c_start(x)      ((x)->r_start)
  56 };