aboutsummaryrefslogtreecommitdiff
path: root/hw/isa_mmio.c
blob: 66bdd2cef6f697ffacdd15b82d148866930a32ee (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
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
/*
 * Memory mapped access to ISA IO space.
 *
 * Copyright (c) 2006 Fabrice Bellard
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

#include "hw.h"
#include "isa.h"

static void isa_mmio_writeb (void *opaque, target_phys_addr_t addr,
                                  uint32_t val)
{
    cpu_outb(addr & IOPORTS_MASK, val);
}

static void isa_mmio_writew_be(void *opaque, target_phys_addr_t addr,
                               uint32_t val)
{
    val = bswap16(val);
    cpu_outw(addr & IOPORTS_MASK, val);
}

static void isa_mmio_writew_le(void *opaque, target_phys_addr_t addr,
                               uint32_t val)
{
    cpu_outw(addr & IOPORTS_MASK, val);
}

static void isa_mmio_writel_be(void *opaque, target_phys_addr_t addr,
                               uint32_t val)
{
    val = bswap32(val);
    cpu_outl(addr & IOPORTS_MASK, val);
}

static void isa_mmio_writel_le(void *opaque, target_phys_addr_t addr,
                               uint32_t val)
{
    cpu_outl(addr & IOPORTS_MASK, val);
}

static uint32_t isa_mmio_readb (void *opaque, target_phys_addr_t addr)
{
    uint32_t val;

    val = cpu_inb(addr & IOPORTS_MASK);
    return val;
}

static uint32_t isa_mmio_readw_be(void *opaque, target_phys_addr_t addr)
{
    uint32_t val;

    val = cpu_inw(addr & IOPORTS_MASK);
    val = bswap16(val);
    return val;
}

static uint32_t isa_mmio_readw_le(void *opaque, target_phys_addr_t addr)
{
    uint32_t val;

    val = cpu_inw(addr & IOPORTS_MASK);
    return val;
}

static uint32_t isa_mmio_readl_be(void *opaque, target_phys_addr_t addr)
{
    uint32_t val;

    val = cpu_inl(addr & IOPORTS_MASK);
    val = bswap32(val);
    return val;
}

static uint32_t isa_mmio_readl_le(void *opaque, target_phys_addr_t addr)
{
    uint32_t val;

    val = cpu_inl(addr & IOPORTS_MASK);
    return val;
}

static CPUWriteMemoryFunc * const isa_mmio_write_be[] = {
    &isa_mmio_writeb,
    &isa_mmio_writew_be,
    &isa_mmio_writel_be,
};

static CPUReadMemoryFunc * const isa_mmio_read_be[] = {
    &isa_mmio_readb,
    &isa_mmio_readw_be,
    &isa_mmio_readl_be,
};

static CPUWriteMemoryFunc * const isa_mmio_write_le[] = {
    &isa_mmio_writeb,
    &isa_mmio_writew_le,
    &isa_mmio_writel_le,
};

static CPUReadMemoryFunc * const isa_mmio_read_le[] = {
    &isa_mmio_readb,
    &isa_mmio_readw_le,
    &isa_mmio_readl_le,
};

static int isa_mmio_iomemtype = 0;

void isa_mmio_init(target_phys_addr_t base, target_phys_addr_t size, int be)
{
    if (!isa_mmio_iomemtype) {
        if (be) {
            isa_mmio_iomemtype = cpu_register_io_memory(isa_mmio_read_be,
                                                        isa_mmio_write_be,
                                                        NULL);
        } else {
            isa_mmio_iomemtype = cpu_register_io_memory(isa_mmio_read_le,
                                                        isa_mmio_write_le,
                                                        NULL);
        }
    }
    cpu_register_physical_memory(base, size, isa_mmio_iomemtype);
}