include/asm-arm26/hardware.h

   1 /*
   2  *  linux/include/asm-arm/arch-arc/hardware.h
   3  *
   4  *  Copyright (C) 1996-1999 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  *  This file contains the hardware definitions of the
  11  *  Acorn Archimedes/A5000 machines.
  12  *
  13  *  Modifications:
  14  *   04-04-1998 PJB/RMK Merged arc and a5k versions
  15  */
  16 #ifndef __ASM_HARDWARE_H
  17 #define __ASM_HARDWARE_H
  18
  19
  20
  21 /*
  22  * What hardware must be present - these can be tested by the kernel
  23  * source.
  24  */
  25 #define HAS_IOC
  26 #define HAS_MEMC
  27 #define HAS_VIDC
  28
  29 #define VDMA_ALIGNMENT  PAGE_SIZE
  30 #define VDMA_XFERSIZE   16
  31 #define VDMA_INIT       0
  32 #define VDMA_START      1
  33 #define VDMA_END        2
  34
  35 #ifndef __ASSEMBLY__
  36 extern void memc_write(unsigned int reg, unsigned long val);
  37
  38 #define video_set_dma(start,end,offset)                         \
  39 do {                                                            \
  40         memc_write (VDMA_START, (start >> 2));                  \
  41         memc_write (VDMA_END, (end - VDMA_XFERSIZE) >> 2);      \
  42         memc_write (VDMA_INIT, (offset >> 2));                  \
  43 } while (0)
  44 #endif
  45
  46
  47 /* Hardware addresses of major areas.
  48  *  *_START is the physical address
  49  *  *_SIZE  is the size of the region
  50  *  *_BASE  is the virtual address
  51  */
  52 #define IO_START                0x03000000
  53 #define IO_SIZE                 0x01000000
  54 #define IO_BASE                 0x03000000
  55
  56 /*
  57  * Screen mapping information
  58  */
  59 #define SCREEN_START            0x02000000
  60 #define SCREEN_END              0x02078000
  61 #define SCREEN_SIZE             0x00078000
  62 #define SCREEN_BASE             0x02000000
  63
  64
  65 #define EXPMASK_BASE            0x03360000
  66 #define IOEB_BASE               0x03350000
  67 #define VIDC_BASE               0x03400000
  68 #define LATCHA_BASE             0x03250040
  69 #define LATCHB_BASE             0x03250018
  70 #define IOC_BASE                0x03200000
  71 #define FLOPPYDMA_BASE          0x0302a000
  72 #define PCIO_BASE               0x03010000
  73
  74 // FIXME - are the below correct?
  75 #define PODSLOT_IOC0_BASE       0x03240000
  76 #define PODSLOT_IOC_SIZE        (1 << 14)
  77 #define PODSLOT_MEMC_BASE       0x03000000
  78 #define PODSLOT_MEMC_SIZE       (1 << 14)
  79
  80 #define vidc_writel(val)        __raw_writel(val, VIDC_BASE)
  81
  82 #ifndef __ASSEMBLY__
  83
  84 /*
  85  * for use with inb/outb
  86  */
  87 #define IOEB_VID_CTL            (IOEB_BASE + 0x48)
  88 #define IOEB_PRESENT            (IOEB_BASE + 0x50)
  89 #define IOEB_PSCLR              (IOEB_BASE + 0x58)
  90 #define IOEB_MONTYPE            (IOEB_BASE + 0x70)
  91
  92 //FIXME - These adresses are weird - ISTR some weirdo address shifting stuff was going on here...
  93 #define IO_EC_IOC_BASE          0x80090000
  94 #define IO_EC_MEMC_BASE         0x80000000
  95
  96 #ifdef CONFIG_ARCH_ARC
  97 /* A680 hardware */
  98 #define WD1973_BASE             0x03290000
  99 #define WD1973_LATCH            0x03350000
 100 #define Z8530_BASE              0x032b0008
 101 #define SCSI_BASE               0x03100000
 102 #endif
 103
 104 #endif
 105
 106 #define EXPMASK_STATUS          (EXPMASK_BASE + 0x00)
 107 #define EXPMASK_ENABLE          (EXPMASK_BASE + 0x04)
 108
 109 #endif