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 /* Mac SCSI Controller 5380 */
  30
  31 #define MAC_5380_BAS    (0x50F10000) /* This is definitely wrong!! */
  32 struct MAC_5380 {
  33         u_char  scsi_data;
  34         u_char  char_dummy1;
  35         u_char  scsi_icr;
  36         u_char  char_dummy2;
  37         u_char  scsi_mode;
  38         u_char  char_dummy3;
  39         u_char  scsi_tcr;
  40         u_char  char_dummy4;
  41         u_char  scsi_idstat;
  42         u_char  char_dummy5;
  43         u_char  scsi_dmastat;
  44         u_char  char_dummy6;
  45         u_char  scsi_targrcv;
  46         u_char  char_dummy7;
  47         u_char  scsi_inircv;
  48 };
  49 #define mac_scsi       ((*(volatile struct MAC_5380 *)MAC_5380_BAS))
  50
  51 /*
  52 ** SCC Z8530
  53 */
  54
  55 #define MAC_SCC_BAS (0x50F04000)
  56 struct MAC_SCC
  57  {
  58   u_char cha_a_ctrl;
  59   u_char char_dummy1;
  60   u_char cha_a_data;
  61   u_char char_dummy2;
  62   u_char cha_b_ctrl;
  63   u_char char_dummy3;
  64   u_char cha_b_data;
  65  };
  66 # define mac_scc ((*(volatile struct SCC*)MAC_SCC_BAS))
  67 #endif
  68
  69 /* hardware stuff */
  70
  71 #define MACHW_DECLARE(name)     unsigned name : 1
  72 #define MACHW_SET(name)         (mac_hw_present.name = 1)
  73 #define MACHW_PRESENT(name)     (mac_hw_present.name)
  74
  75 struct mac_hw_present {
  76   /* video hardware */
  77   /* sound hardware */
  78   /* disk storage interfaces */
  79   MACHW_DECLARE(MAC_SCSI_80);     /* Directly mapped NCR5380 */
  80   MACHW_DECLARE(MAC_SCSI_96);     /* 53c9[46] */
  81   MACHW_DECLARE(MAC_SCSI_96_2);   /* 2nd 53c9[46] Q900 and Q950 */
  82   MACHW_DECLARE(IDE);             /* IDE Interface */
  83   /* other I/O hardware */
  84   MACHW_DECLARE(SCC);             /* Serial Communications Contr. */
  85   /* DMA */
  86   MACHW_DECLARE(SCSI_DMA);        /* DMA for the NCR5380 */
  87   /* real time clocks */
  88   MACHW_DECLARE(RTC_CLK);         /* clock chip */
  89   /* supporting hardware */
  90   MACHW_DECLARE(VIA1);            /* Versatile Interface Ad. 1 */
  91   MACHW_DECLARE(VIA2);            /* Versatile Interface Ad. 2 */
  92   MACHW_DECLARE(RBV);             /* Versatile Interface Ad. 2+ */
  93   /* NUBUS */
  94   MACHW_DECLARE(NUBUS);           /* NUBUS */
  95 };
  96
  97 extern struct mac_hw_present mac_hw_present;
  98
  99 #endif /* __ASSEMBLY__ */
 100
 101 #endif /* linux/machw.h */