]> Git Repo - qemu.git/blob - hw/vga-isa-mm.c
Merge branch 'queues/slirp' of git://git.kiszka.org/qemu
[qemu.git] / hw / vga-isa-mm.c
1 /*
2  * QEMU ISA MM VGA Emulator.
3  *
4  * Copyright (c) 2003 Fabrice Bellard
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a copy
7  * of this software and associated documentation files (the "Software"), to deal
8  * in the Software without restriction, including without limitation the rights
9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10  * copies of the Software, and to permit persons to whom the Software is
11  * furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22  * THE SOFTWARE.
23  */
24 #include "hw.h"
25 #include "console.h"
26 #include "pc.h"
27 #include "vga_int.h"
28 #include "pixel_ops.h"
29 #include "qemu-timer.h"
30 #include "exec-memory.h"
31
32 typedef struct ISAVGAMMState {
33     VGACommonState vga;
34     int it_shift;
35 } ISAVGAMMState;
36
37 /* Memory mapped interface */
38 static uint32_t vga_mm_readb (void *opaque, target_phys_addr_t addr)
39 {
40     ISAVGAMMState *s = opaque;
41
42     return vga_ioport_read(&s->vga, addr >> s->it_shift) & 0xff;
43 }
44
45 static void vga_mm_writeb (void *opaque,
46                            target_phys_addr_t addr, uint32_t value)
47 {
48     ISAVGAMMState *s = opaque;
49
50     vga_ioport_write(&s->vga, addr >> s->it_shift, value & 0xff);
51 }
52
53 static uint32_t vga_mm_readw (void *opaque, target_phys_addr_t addr)
54 {
55     ISAVGAMMState *s = opaque;
56
57     return vga_ioport_read(&s->vga, addr >> s->it_shift) & 0xffff;
58 }
59
60 static void vga_mm_writew (void *opaque,
61                            target_phys_addr_t addr, uint32_t value)
62 {
63     ISAVGAMMState *s = opaque;
64
65     vga_ioport_write(&s->vga, addr >> s->it_shift, value & 0xffff);
66 }
67
68 static uint32_t vga_mm_readl (void *opaque, target_phys_addr_t addr)
69 {
70     ISAVGAMMState *s = opaque;
71
72     return vga_ioport_read(&s->vga, addr >> s->it_shift);
73 }
74
75 static void vga_mm_writel (void *opaque,
76                            target_phys_addr_t addr, uint32_t value)
77 {
78     ISAVGAMMState *s = opaque;
79
80     vga_ioport_write(&s->vga, addr >> s->it_shift, value);
81 }
82
83 static const MemoryRegionOps vga_mm_ctrl_ops = {
84     .old_mmio = {
85         .read = {
86             vga_mm_readb,
87             vga_mm_readw,
88             vga_mm_readl,
89         },
90         .write = {
91             vga_mm_writeb,
92             vga_mm_writew,
93             vga_mm_writel,
94         },
95     },
96     .endianness = DEVICE_NATIVE_ENDIAN,
97 };
98
99 static void vga_mm_init(ISAVGAMMState *s, target_phys_addr_t vram_base,
100                         target_phys_addr_t ctrl_base, int it_shift)
101 {
102     MemoryRegion *s_ioport_ctrl, *vga_io_memory;
103
104     s->it_shift = it_shift;
105     s_ioport_ctrl = g_malloc(sizeof(*s_ioport_ctrl));
106     memory_region_init_io(s_ioport_ctrl, &vga_mm_ctrl_ops, s,
107                           "vga-mm-ctrl", 0x100000);
108
109     vga_io_memory = g_malloc(sizeof(*vga_io_memory));
110     /* XXX: endianness? */
111     memory_region_init_io(vga_io_memory, &vga_mem_ops, &s->vga,
112                           "vga-mem", 0x20000);
113
114     vmstate_register(NULL, 0, &vmstate_vga_common, s);
115
116     memory_region_add_subregion(get_system_memory(), ctrl_base, s_ioport_ctrl);
117     s->vga.bank_offset = 0;
118     memory_region_add_subregion(get_system_memory(),
119                                 vram_base + 0x000a0000, vga_io_memory);
120     memory_region_set_coalescing(vga_io_memory);
121 }
122
123 int isa_vga_mm_init(target_phys_addr_t vram_base,
124                     target_phys_addr_t ctrl_base, int it_shift)
125 {
126     ISAVGAMMState *s;
127
128     s = g_malloc0(sizeof(*s));
129
130     vga_common_init(&s->vga, VGA_RAM_SIZE);
131     vga_mm_init(s, vram_base, ctrl_base, it_shift);
132
133     s->vga.ds = graphic_console_init(s->vga.update, s->vga.invalidate,
134                                      s->vga.screen_dump, s->vga.text_update, s);
135
136     vga_init_vbe(&s->vga);
137     return 0;
138 }
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