meson: convert hw/vfio
[qemu.git] / hw / display / 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
25 #include "qemu/osdep.h"
26 #include "qemu/bitops.h"
27 #include "qemu/units.h"
28 #include "migration/vmstate.h"
29 #include "hw/display/vga.h"
30 #include "vga_int.h"
31 #include "ui/pixel_ops.h"
32
33 #define VGA_RAM_SIZE (8 * MiB)
34
35 typedef struct ISAVGAMMState {
36 VGACommonState vga;
37 int it_shift;
38 } ISAVGAMMState;
39
40 /* Memory mapped interface */
41 static uint64_t vga_mm_read(void *opaque, hwaddr addr, unsigned size)
42 {
43 ISAVGAMMState *s = opaque;
44
45 return vga_ioport_read(&s->vga, addr >> s->it_shift) &
46 MAKE_64BIT_MASK(0, size * 8);
47 }
48
49 static void vga_mm_write(void *opaque, hwaddr addr, uint64_t value,
50 unsigned size)
51 {
52 ISAVGAMMState *s = opaque;
53
54 vga_ioport_write(&s->vga, addr >> s->it_shift,
55 value & MAKE_64BIT_MASK(0, size * 8));
56 }
57
58 static const MemoryRegionOps vga_mm_ctrl_ops = {
59 .read = vga_mm_read,
60 .write = vga_mm_write,
61 .valid.min_access_size = 1,
62 .valid.max_access_size = 4,
63 .impl.min_access_size = 1,
64 .impl.max_access_size = 4,
65 .endianness = DEVICE_NATIVE_ENDIAN,
66 };
67
68 static void vga_mm_init(ISAVGAMMState *s, hwaddr vram_base,
69 hwaddr ctrl_base, int it_shift,
70 MemoryRegion *address_space)
71 {
72 MemoryRegion *s_ioport_ctrl, *vga_io_memory;
73
74 s->it_shift = it_shift;
75 s_ioport_ctrl = g_malloc(sizeof(*s_ioport_ctrl));
76 memory_region_init_io(s_ioport_ctrl, NULL, &vga_mm_ctrl_ops, s,
77 "vga-mm-ctrl", 0x100000);
78 memory_region_set_flush_coalesced(s_ioport_ctrl);
79
80 vga_io_memory = g_malloc(sizeof(*vga_io_memory));
81 /* XXX: endianness? */
82 memory_region_init_io(vga_io_memory, NULL, &vga_mem_ops, &s->vga,
83 "vga-mem", 0x20000);
84
85 vmstate_register(NULL, 0, &vmstate_vga_common, s);
86
87 memory_region_add_subregion(address_space, ctrl_base, s_ioport_ctrl);
88 s->vga.bank_offset = 0;
89 memory_region_add_subregion(address_space,
90 vram_base + 0x000a0000, vga_io_memory);
91 memory_region_set_coalescing(vga_io_memory);
92 }
93
94 int isa_vga_mm_init(hwaddr vram_base,
95 hwaddr ctrl_base, int it_shift,
96 MemoryRegion *address_space)
97 {
98 ISAVGAMMState *s;
99
100 s = g_malloc0(sizeof(*s));
101
102 s->vga.vram_size_mb = VGA_RAM_SIZE / MiB;
103 s->vga.global_vmstate = true;
104 vga_common_init(&s->vga, NULL);
105 vga_mm_init(s, vram_base, ctrl_base, it_shift, address_space);
106
107 s->vga.con = graphic_console_init(NULL, 0, s->vga.hw_ops, s);
108
109 memory_region_add_subregion(address_space,
110 VBE_DISPI_LFB_PHYSICAL_ADDRESS,
111 &s->vga.vram);
112
113 return 0;
114 }