root / hw / vga-isa-mm.c @ 814cd3ac
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1 | 79b97bf2 | Juan Quintela | /*
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2 | 79b97bf2 | Juan Quintela | * QEMU ISA MM VGA Emulator.
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3 | 79b97bf2 | Juan Quintela | *
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4 | 79b97bf2 | Juan Quintela | * Copyright (c) 2003 Fabrice Bellard
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5 | 79b97bf2 | Juan Quintela | *
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6 | 79b97bf2 | Juan Quintela | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | 79b97bf2 | Juan Quintela | * of this software and associated documentation files (the "Software"), to deal
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8 | 79b97bf2 | Juan Quintela | * in the Software without restriction, including without limitation the rights
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9 | 79b97bf2 | Juan Quintela | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | 79b97bf2 | Juan Quintela | * copies of the Software, and to permit persons to whom the Software is
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11 | 79b97bf2 | Juan Quintela | * furnished to do so, subject to the following conditions:
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12 | 79b97bf2 | Juan Quintela | *
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13 | 79b97bf2 | Juan Quintela | * The above copyright notice and this permission notice shall be included in
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14 | 79b97bf2 | Juan Quintela | * all copies or substantial portions of the Software.
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15 | 79b97bf2 | Juan Quintela | *
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16 | 79b97bf2 | Juan Quintela | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | 79b97bf2 | Juan Quintela | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | 79b97bf2 | Juan Quintela | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | 79b97bf2 | Juan Quintela | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | 79b97bf2 | Juan Quintela | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | 79b97bf2 | Juan Quintela | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | 79b97bf2 | Juan Quintela | * THE SOFTWARE.
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23 | 79b97bf2 | Juan Quintela | */
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24 | 79b97bf2 | Juan Quintela | #include "hw.h" |
25 | 79b97bf2 | Juan Quintela | #include "console.h" |
26 | 79b97bf2 | Juan Quintela | #include "pc.h" |
27 | 79b97bf2 | Juan Quintela | #include "vga_int.h" |
28 | 79b97bf2 | Juan Quintela | #include "pixel_ops.h" |
29 | 79b97bf2 | Juan Quintela | #include "qemu-timer.h" |
30 | 79b97bf2 | Juan Quintela | |
31 | 79b97bf2 | Juan Quintela | typedef struct ISAVGAMMState { |
32 | 79b97bf2 | Juan Quintela | VGACommonState vga; |
33 | 79b97bf2 | Juan Quintela | int it_shift;
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34 | 79b97bf2 | Juan Quintela | } ISAVGAMMState; |
35 | 79b97bf2 | Juan Quintela | |
36 | 79b97bf2 | Juan Quintela | /* Memory mapped interface */
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37 | c227f099 | Anthony Liguori | static uint32_t vga_mm_readb (void *opaque, target_phys_addr_t addr) |
38 | 79b97bf2 | Juan Quintela | { |
39 | 79b97bf2 | Juan Quintela | ISAVGAMMState *s = opaque; |
40 | 79b97bf2 | Juan Quintela | |
41 | 79b97bf2 | Juan Quintela | return vga_ioport_read(&s->vga, addr >> s->it_shift) & 0xff; |
42 | 79b97bf2 | Juan Quintela | } |
43 | 79b97bf2 | Juan Quintela | |
44 | 79b97bf2 | Juan Quintela | static void vga_mm_writeb (void *opaque, |
45 | c227f099 | Anthony Liguori | target_phys_addr_t addr, uint32_t value) |
46 | 79b97bf2 | Juan Quintela | { |
47 | 79b97bf2 | Juan Quintela | ISAVGAMMState *s = opaque; |
48 | 79b97bf2 | Juan Quintela | |
49 | 79b97bf2 | Juan Quintela | vga_ioport_write(&s->vga, addr >> s->it_shift, value & 0xff);
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50 | 79b97bf2 | Juan Quintela | } |
51 | 79b97bf2 | Juan Quintela | |
52 | c227f099 | Anthony Liguori | static uint32_t vga_mm_readw (void *opaque, target_phys_addr_t addr) |
53 | 79b97bf2 | Juan Quintela | { |
54 | 79b97bf2 | Juan Quintela | ISAVGAMMState *s = opaque; |
55 | 79b97bf2 | Juan Quintela | |
56 | 79b97bf2 | Juan Quintela | return vga_ioport_read(&s->vga, addr >> s->it_shift) & 0xffff; |
57 | 79b97bf2 | Juan Quintela | } |
58 | 79b97bf2 | Juan Quintela | |
59 | 79b97bf2 | Juan Quintela | static void vga_mm_writew (void *opaque, |
60 | c227f099 | Anthony Liguori | target_phys_addr_t addr, uint32_t value) |
61 | 79b97bf2 | Juan Quintela | { |
62 | 79b97bf2 | Juan Quintela | ISAVGAMMState *s = opaque; |
63 | 79b97bf2 | Juan Quintela | |
64 | 79b97bf2 | Juan Quintela | vga_ioport_write(&s->vga, addr >> s->it_shift, value & 0xffff);
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65 | 79b97bf2 | Juan Quintela | } |
66 | 79b97bf2 | Juan Quintela | |
67 | c227f099 | Anthony Liguori | static uint32_t vga_mm_readl (void *opaque, target_phys_addr_t addr) |
68 | 79b97bf2 | Juan Quintela | { |
69 | 79b97bf2 | Juan Quintela | ISAVGAMMState *s = opaque; |
70 | 79b97bf2 | Juan Quintela | |
71 | 79b97bf2 | Juan Quintela | return vga_ioport_read(&s->vga, addr >> s->it_shift);
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72 | 79b97bf2 | Juan Quintela | } |
73 | 79b97bf2 | Juan Quintela | |
74 | 79b97bf2 | Juan Quintela | static void vga_mm_writel (void *opaque, |
75 | c227f099 | Anthony Liguori | target_phys_addr_t addr, uint32_t value) |
76 | 79b97bf2 | Juan Quintela | { |
77 | 79b97bf2 | Juan Quintela | ISAVGAMMState *s = opaque; |
78 | 79b97bf2 | Juan Quintela | |
79 | 79b97bf2 | Juan Quintela | vga_ioport_write(&s->vga, addr >> s->it_shift, value); |
80 | 79b97bf2 | Juan Quintela | } |
81 | 79b97bf2 | Juan Quintela | |
82 | b1950430 | Avi Kivity | static const MemoryRegionOps vga_mm_ctrl_ops = { |
83 | b1950430 | Avi Kivity | .old_mmio = { |
84 | b1950430 | Avi Kivity | .read = { |
85 | b1950430 | Avi Kivity | vga_mm_readb, |
86 | b1950430 | Avi Kivity | vga_mm_readw, |
87 | b1950430 | Avi Kivity | vga_mm_readl, |
88 | b1950430 | Avi Kivity | }, |
89 | b1950430 | Avi Kivity | .write = { |
90 | b1950430 | Avi Kivity | vga_mm_writeb, |
91 | b1950430 | Avi Kivity | vga_mm_writew, |
92 | b1950430 | Avi Kivity | vga_mm_writel, |
93 | b1950430 | Avi Kivity | }, |
94 | b1950430 | Avi Kivity | }, |
95 | b1950430 | Avi Kivity | .endianness = DEVICE_NATIVE_ENDIAN, |
96 | 79b97bf2 | Juan Quintela | }; |
97 | 79b97bf2 | Juan Quintela | |
98 | c227f099 | Anthony Liguori | static void vga_mm_init(ISAVGAMMState *s, target_phys_addr_t vram_base, |
99 | be20f9e9 | Avi Kivity | target_phys_addr_t ctrl_base, int it_shift,
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100 | be20f9e9 | Avi Kivity | MemoryRegion *address_space) |
101 | 79b97bf2 | Juan Quintela | { |
102 | b1950430 | Avi Kivity | MemoryRegion *s_ioport_ctrl, *vga_io_memory; |
103 | 79b97bf2 | Juan Quintela | |
104 | 79b97bf2 | Juan Quintela | s->it_shift = it_shift; |
105 | 7267c094 | Anthony Liguori | s_ioport_ctrl = g_malloc(sizeof(*s_ioport_ctrl));
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106 | b1950430 | Avi Kivity | memory_region_init_io(s_ioport_ctrl, &vga_mm_ctrl_ops, s, |
107 | b1950430 | Avi Kivity | "vga-mm-ctrl", 0x100000); |
108 | b1950430 | Avi Kivity | |
109 | 7267c094 | Anthony Liguori | vga_io_memory = g_malloc(sizeof(*vga_io_memory));
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110 | b1950430 | Avi Kivity | /* XXX: endianness? */
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111 | b1950430 | Avi Kivity | memory_region_init_io(vga_io_memory, &vga_mem_ops, &s->vga, |
112 | b1950430 | Avi Kivity | "vga-mem", 0x20000); |
113 | 79b97bf2 | Juan Quintela | |
114 | 0be71e32 | Alex Williamson | vmstate_register(NULL, 0, &vmstate_vga_common, s); |
115 | 79b97bf2 | Juan Quintela | |
116 | be20f9e9 | Avi Kivity | memory_region_add_subregion(address_space, ctrl_base, s_ioport_ctrl); |
117 | 79b97bf2 | Juan Quintela | s->vga.bank_offset = 0;
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118 | be20f9e9 | Avi Kivity | memory_region_add_subregion(address_space, |
119 | b1950430 | Avi Kivity | vram_base + 0x000a0000, vga_io_memory);
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120 | b1950430 | Avi Kivity | memory_region_set_coalescing(vga_io_memory); |
121 | 79b97bf2 | Juan Quintela | } |
122 | 79b97bf2 | Juan Quintela | |
123 | c227f099 | Anthony Liguori | int isa_vga_mm_init(target_phys_addr_t vram_base,
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124 | be20f9e9 | Avi Kivity | target_phys_addr_t ctrl_base, int it_shift,
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125 | be20f9e9 | Avi Kivity | MemoryRegion *address_space) |
126 | 79b97bf2 | Juan Quintela | { |
127 | 79b97bf2 | Juan Quintela | ISAVGAMMState *s; |
128 | 79b97bf2 | Juan Quintela | |
129 | 7267c094 | Anthony Liguori | s = g_malloc0(sizeof(*s));
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130 | 79b97bf2 | Juan Quintela | |
131 | 79b97bf2 | Juan Quintela | vga_common_init(&s->vga, VGA_RAM_SIZE); |
132 | be20f9e9 | Avi Kivity | vga_mm_init(s, vram_base, ctrl_base, it_shift, address_space); |
133 | 79b97bf2 | Juan Quintela | |
134 | 79b97bf2 | Juan Quintela | s->vga.ds = graphic_console_init(s->vga.update, s->vga.invalidate, |
135 | 79b97bf2 | Juan Quintela | s->vga.screen_dump, s->vga.text_update, s); |
136 | 79b97bf2 | Juan Quintela | |
137 | be20f9e9 | Avi Kivity | vga_init_vbe(&s->vga, address_space); |
138 | 79b97bf2 | Juan Quintela | return 0; |
139 | 79b97bf2 | Juan Quintela | } |