blob: 0f77d72bbc5d1a6af7088f80ea2e9bcfc4934c98 (
plain)
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
|
/* -*- linux-c -*-
*
* arch/arm/mach-ns9xxx/include/mach/fim-uncompress.h
*
* Copyright (C) 2009 by Digi International Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* !Authors: Hector Palacios, Luis Galdos
* !Desc:
* !References:
*/
#ifndef __FIM_UNCROMPRESS_H
#define __FIM_UNCROMPRESS_H
#include <asm/io.h>
#define NS921X_FIM0 __REG(0x90000000)
#define NS921X_FIM1 __REG(0x90008000)
#define FIM_SERIAL_DATA_BITS (8)
#define NS92XX_FIM_CTRL0_REG (0x10)
#define NS92XX_FIM_EXP0_REG (0x50)
#define NS92XX_FIM_CTRL_REG(i) (NS92XX_FIM_CTRL0_REG + 4*i)
#define NS92XX_FIM_EXP_REG(i) (NS92XX_FIM_EXP0_REG + 4*i)
#define NS92XX_FIM_REG_BASE_PA (0x90001000)
#define NS92XX_FIM_REG_BASE_PA (0x90001000)
#define NS92XX_FIM_REG_OFFSET (0x8000)
#define FIM_REG_ADDR(x) (NS92XX_FIM_REG_BASE_PA + \
(x * NS92XX_FIM_REG_OFFSET))
#define NS921X_FIM_ENABLED(base) (__raw_readl((base) + 0x1000) \
& (1 << 31))
#define NS92XX_FIM_GEN_CTRL_REG (0x00)
#define NS92XX_FIM_GEN_CTRL_INTTOPIC (0x00007f00)
#define NS92XX_FIM_GEN_CTRL_INTACKRD (0x00000080)
#define NS92XX_FIM_INT_MASK(code) (code<<8)
#define FIM_SERIAL_INT_INSERT_CHAR (0x01)
static int fim_send_interrupt(int pic_num, unsigned int code)
{
unsigned int stopcnt;
u32 status;
code = NS92XX_FIM_INT_MASK(code);
status = readl(FIM_REG_ADDR(pic_num) + NS92XX_FIM_GEN_CTRL_REG);
writel(status | code, FIM_REG_ADDR(pic_num) + NS92XX_FIM_GEN_CTRL_REG);
/* This loop is perhaps problematic, exit with a timeout */
stopcnt = 0xFFFF;
do {
status = readl(FIM_REG_ADDR(pic_num) + NS92XX_FIM_GEN_CTRL_REG);
stopcnt--;
} while (!(status & NS92XX_FIM_GEN_CTRL_INTACKRD) && stopcnt);
if (!stopcnt) {
return 1;
}
/* Reset the interrupt bits for the PIC acknowledge */
status &= ~NS92XX_FIM_GEN_CTRL_INTTOPIC;
writel(status, FIM_REG_ADDR(pic_num) + NS92XX_FIM_GEN_CTRL_REG);
stopcnt = 0xFFFF;
do {
status = readl(FIM_REG_ADDR(pic_num) + NS92XX_FIM_GEN_CTRL_REG);
stopcnt--;
} while ((status & NS92XX_FIM_GEN_CTRL_INTACKRD) && stopcnt);
if (!stopcnt) {
return 1;
}
return 0;
}
static void fim_set_ctrl_reg(int pic_num, int reg, unsigned int val)
{
writel(val, FIM_REG_ADDR(pic_num) + NS92XX_FIM_CTRL_REG(reg));
}
static int fim_get_exp_reg(int pic_num, int nr)
{
return readl(FIM_REG_ADDR(pic_num) + NS92XX_FIM_EXP_REG(nr));
}
#endif /* __FIM_UNCROMPRESS_H */
|
