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
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* iohelper.h
* helper for define functions to access ISDN hardware
* supported are memory mapped IO
* indirect port IO (one port for address, one for data)
*
* Author Karsten Keil <keil@isdn4linux.de>
*
* Copyright 2009 by Karsten Keil <keil@isdn4linux.de>
*/
#ifndef _IOHELPER_H
#define _IOHELPER_H
typedef u8 (read_reg_func)(void *hwp, u8 offset);
typedef void (write_reg_func)(void *hwp, u8 offset, u8 value);
typedef void (fifo_func)(void *hwp, u8 offset, u8 *datap, int size);
struct _ioport {
u32 port;
u32 ale;
};
#define IOFUNC_IO(name, hws, ap) \
static u8 Read##name##_IO(void *p, u8 off) { \
struct hws *hw = p; \
return inb(hw->ap.port + off); \
} \
static void Write##name##_IO(void *p, u8 off, u8 val) { \
struct hws *hw = p; \
outb(val, hw->ap.port + off); \
} \
static void ReadFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) { \
struct hws *hw = p; \
insb(hw->ap.port + off, dp, size); \
} \
static void WriteFiFo##name##_IO(void *p, u8 off, u8 *dp, int size) { \
struct hws *hw = p; \
outsb(hw->ap.port + off, dp, size); \
}
#define IOFUNC_IND(name, hws, ap) \
static u8 Read##name##_IND(void *p, u8 off) { \
struct hws *hw = p; \
outb(off, hw->ap.ale); \
return inb(hw->ap.port); \
} \
static void Write##name##_IND(void *p, u8 off, u8 val) { \
struct hws *hw = p; \
outb(off, hw->ap.ale); \
outb(val, hw->ap.port); \
} \
static void ReadFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) { \
struct hws *hw = p; \
outb(off, hw->ap.ale); \
insb(hw->ap.port, dp, size); \
} \
static void WriteFiFo##name##_IND(void *p, u8 off, u8 *dp, int size) { \
struct hws *hw = p; \
outb(off, hw->ap.ale); \
outsb(hw->ap.port, dp, size); \
}
#define IOFUNC_MEMIO(name, hws, typ, adr) \
static u8 Read##name##_MIO(void *p, u8 off) { \
struct hws *hw = p; \
return readb(((typ *)hw->adr) + off); \
} \
static void Write##name##_MIO(void *p, u8 off, u8 val) { \
struct hws *hw = p; \
writeb(val, ((typ *)hw->adr) + off); \
} \
static void ReadFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) { \
struct hws *hw = p; \
while (size--) \
*dp++ = readb(((typ *)hw->adr) + off); \
} \
static void WriteFiFo##name##_MIO(void *p, u8 off, u8 *dp, int size) { \
struct hws *hw = p; \
while (size--) \
writeb(*dp++, ((typ *)hw->adr) + off); \
}
#define ASSIGN_FUNC(typ, name, dest) do { \
dest.read_reg = &Read##name##_##typ; \
dest.write_reg = &Write##name##_##typ; \
dest.read_fifo = &ReadFiFo##name##_##typ; \
dest.write_fifo = &WriteFiFo##name##_##typ; \
} while (0)
#define ASSIGN_FUNC_IPAC(typ, target) do { \
ASSIGN_FUNC(typ, ISAC, target.isac); \
ASSIGN_FUNC(typ, IPAC, target); \
} while (0)
#endif
|
