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