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
|
/*
*
* BRIEF MODULE DESCRIPTION
* Low level uart routines to directly access a TX[34]927 SIO.
*
* Copyright 2001 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ahennessy@mvista.com or source@mvista.com
*
* Copyright (C) 2000-2001 Toshiba Corporation
*
* Based on arch/mips/au1000/common/puts.c
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/types.h>
#include <asm/jmr3927/txx927.h>
#include <asm/jmr3927/tx3927.h>
#include <asm/jmr3927/jmr3927.h>
#define TIMEOUT 0xffffff
#define SLOW_DOWN
static const char digits[16] = "0123456789abcdef";
#ifdef SLOW_DOWN
#define slow_down() { int k; for (k=0; k<10000; k++); }
#else
#define slow_down()
#endif
void
putch(const unsigned char c)
{
int i = 0;
do {
slow_down();
i++;
if (i>TIMEOUT) {
break;
}
} while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS));
tx3927_sioptr(1)->tfifo = c;
return;
}
unsigned char getch(void)
{
int i = 0;
int dicr;
char c;
/* diable RX int. */
dicr = tx3927_sioptr(1)->dicr;
tx3927_sioptr(1)->dicr = 0;
do {
slow_down();
i++;
if (i>TIMEOUT) {
break;
}
} while (tx3927_sioptr(1)->disr & TXx927_SIDISR_UVALID)
;
c = tx3927_sioptr(1)->rfifo;
/* clear RX int. status */
tx3927_sioptr(1)->disr &= ~TXx927_SIDISR_RDIS;
/* enable RX int. */
tx3927_sioptr(1)->dicr = dicr;
return c;
}
void
do_jmr3927_led_set(char n)
{
/* and with current leds */
jmr3927_led_and_set(n);
}
void
puts(unsigned char *cp)
{
int i = 0;
while (*cp) {
do {
slow_down();
i++;
if (i>TIMEOUT) {
break;
}
} while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS));
tx3927_sioptr(1)->tfifo = *cp++;
}
putch('\r');
putch('\n');
}
void
fputs(unsigned char *cp)
{
int i = 0;
while (*cp) {
do {
slow_down();
i++;
if (i>TIMEOUT) {
break;
}
} while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS));
tx3927_sioptr(1)->tfifo = *cp++;
}
}
void
put64(uint64_t ul)
{
int cnt;
unsigned ch;
cnt = 16; /* 16 nibbles in a 64 bit long */
putch('0');
putch('x');
do {
cnt--;
ch = (unsigned char)(ul >> cnt * 4) & 0x0F;
putch(digits[ch]);
} while (cnt > 0);
}
void
put32(unsigned u)
{
int cnt;
unsigned ch;
cnt = 8; /* 8 nibbles in a 32 bit long */
putch('0');
putch('x');
do {
cnt--;
ch = (unsigned char)(u >> cnt * 4) & 0x0F;
putch(digits[ch]);
} while (cnt > 0);
}
|
