include/asm-m68k/machw.h

   1 /*
   2 ** linux/machw.h -- This header defines some macros and pointers for
   3 **                    the various Macintosh custom hardware registers.
   4 **
   5 ** Copyright 1997 by Michael Schmitz
   6 **
   7 ** This file is subject to the terms and conditions of the GNU General Public
   8 ** License.  See the file COPYING in the main directory of this archive
   9 ** for more details.
  10 **
  11 */
  12
  13 #ifndef _ASM_MACHW_H_
  14 #define _ASM_MACHW_H_
  15
  16 /*
  17  * head.S maps the videomem to VIDEOMEMBASE
  18  */
  19
  20 #define VIDEOMEMBASE    0xf0000000
  21 #define VIDEOMEMSIZE    (4096*1024)
  22 #define VIDEOMEMMASK    (-4096*1024)
  23
  24 #ifndef __ASSEMBLY__
  25
  26 #include <linux/types.h>
  27
  28 #if 0
  29 /*
  30 ** SCC Z8530
  31 */
  32
  33 #define MAC_SCC_BAS (0x50F04000)
  34 struct MAC_SCC
  35  {
  36   u_char cha_a_ctrl;
  37   u_char char_dummy1;
  38   u_char cha_a_data;
  39   u_char char_dummy2;
  40   u_char cha_b_ctrl;
  41   u_char char_dummy3;
  42   u_char cha_b_data;
  43  };
  44 # define mac_scc ((*(volatile struct SCC*)MAC_SCC_BAS))
  45 #endif
  46
  47 #endif /* __ASSEMBLY__ */
  48
  49 #endif /* linux/machw.h */