1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
* Low-level hardware access stuff for Jazz family machines.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1995, 1996, 1997 by Ralf Baechle
*
* $Id: hw-access.c,v 1.4 1997/07/29 17:46:45 ralf Exp $
*/
#include <linux/delay.h>
#include <linux/linkage.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <asm/addrspace.h>
#include <asm/vector.h>
#include <asm/jazz.h>
#include <asm/jazzdma.h>
#include <asm/keyboard.h>
#include <asm/pgtable.h>
#include <asm/mc146818rtc.h>
static unsigned char
fd_inb(unsigned int port)
{
unsigned char c;
c = *(volatile unsigned char *) port;
udelay(1);
return c;
}
static void
fd_outb(unsigned char value, unsigned int port)
{
*(volatile unsigned char *) port = value;
}
/*
* How to access the floppy DMA functions.
*/
static void
fd_enable_dma(int channel)
{
vdma_enable(JAZZ_FLOPPY_DMA);
}
static void
fd_disable_dma(int channel)
{
vdma_disable(JAZZ_FLOPPY_DMA);
}
static int
fd_request_dma(int channel)
{
return 0;
}
static void
fd_free_dma(int channel)
{
}
static void
fd_clear_dma_ff(int channel)
{
}
static void
fd_set_dma_mode(int channel, char mode)
{
vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
}
static void
fd_set_dma_addr(int channel, unsigned int a)
{
vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(PHYSADDR(a)));
}
static void
fd_set_dma_count(int channel, unsigned int count)
{
vdma_set_count(JAZZ_FLOPPY_DMA, count);
}
static int
fd_get_dma_residue(int channel)
{
return vdma_get_residue(JAZZ_FLOPPY_DMA);
}
static void
fd_enable_irq(int irq)
{
}
static void
fd_disable_irq(int irq)
{
}
void
jazz_fd_cacheflush(const void *addr, size_t size)
{
flush_cache_all();
}
static unsigned char
rtc_read_data(unsigned long addr)
{
outb_p(addr, RTC_PORT(0));
return *(char *)JAZZ_RTC_BASE;
}
static void
rtc_write_data(unsigned char data, unsigned long addr)
{
outb_p(addr, RTC_PORT(0));
*(char *)JAZZ_RTC_BASE = data;
}
struct feature jazz_feature = {
/*
* How to access the floppy controller's ports
*/
fd_inb,
fd_outb,
/*
* How to access the floppy DMA functions.
*/
fd_enable_dma,
fd_disable_dma,
fd_request_dma,
fd_free_dma,
fd_clear_dma_ff,
fd_set_dma_mode,
fd_set_dma_addr,
fd_set_dma_count,
fd_get_dma_residue,
fd_enable_irq,
fd_disable_irq,
/*
* How to access the RTC functions.
*/
rtc_read_data,
rtc_write_data
};
static volatile keyboard_hardware *jazz_kh =
(keyboard_hardware *) JAZZ_KEYBOARD_ADDRESS;
static unsigned char jazz_read_input(void)
{
return jazz_kh->data;
}
static void jazz_write_output(unsigned char val)
{
jazz_kh->data = val;
}
static void jazz_write_command(unsigned char val)
{
jazz_kh->command = val;
}
static unsigned char jazz_read_status(void)
{
return jazz_kh->command;
}
void jazz_keyboard_setup(void)
{
kbd_read_input = jazz_read_input;
kbd_write_output = jazz_write_output;
kbd_write_command = jazz_write_command;
kbd_read_status = jazz_read_status;
request_region(0x60, 16, "keyboard");
}
|
