hw/vga_int.h

   1 /*
   2  * QEMU internal VGA defines.
   3  *
   4  * Copyright (c) 2003-2004 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 <hw/hw.h>
  26 #include "memory.h"
  27
  28 #define ST01_V_RETRACE      0x08
  29 #define ST01_DISP_ENABLE    0x01
  30
  31 /* bochs VBE support */
  32 #define CONFIG_BOCHS_VBE
  33
  34 #define VBE_DISPI_MAX_XRES              1600
  35 #define VBE_DISPI_MAX_YRES              1200
  36 #define VBE_DISPI_MAX_BPP               32
  37
  38 #define VBE_DISPI_INDEX_ID              0x0
  39 #define VBE_DISPI_INDEX_XRES            0x1
  40 #define VBE_DISPI_INDEX_YRES            0x2
  41 #define VBE_DISPI_INDEX_BPP             0x3
  42 #define VBE_DISPI_INDEX_ENABLE          0x4
  43 #define VBE_DISPI_INDEX_BANK            0x5
  44 #define VBE_DISPI_INDEX_VIRT_WIDTH      0x6
  45 #define VBE_DISPI_INDEX_VIRT_HEIGHT     0x7
  46 #define VBE_DISPI_INDEX_X_OFFSET        0x8
  47 #define VBE_DISPI_INDEX_Y_OFFSET        0x9
  48 #define VBE_DISPI_INDEX_NB              0xa /* size of vbe_regs[] */
  49 #define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa /* read-only, not in vbe_regs */
  50
  51 #define VBE_DISPI_ID0                   0xB0C0
  52 #define VBE_DISPI_ID1                   0xB0C1
  53 #define VBE_DISPI_ID2                   0xB0C2
  54 #define VBE_DISPI_ID3                   0xB0C3
  55 #define VBE_DISPI_ID4                   0xB0C4
  56 #define VBE_DISPI_ID5                   0xB0C5
  57
  58 #define VBE_DISPI_DISABLED              0x00
  59 #define VBE_DISPI_ENABLED               0x01
  60 #define VBE_DISPI_GETCAPS               0x02
  61 #define VBE_DISPI_8BIT_DAC              0x20
  62 #define VBE_DISPI_LFB_ENABLED           0x40
  63 #define VBE_DISPI_NOCLEARMEM            0x80
  64
  65 #define VBE_DISPI_LFB_PHYSICAL_ADDRESS  0xE0000000
  66
  67 #ifdef CONFIG_BOCHS_VBE
  68
  69 #define VGA_STATE_COMMON_BOCHS_VBE              \
  70     uint16_t vbe_index;                         \
  71     uint16_t vbe_regs[VBE_DISPI_INDEX_NB];      \
  72     uint32_t vbe_start_addr;                    \
  73     uint32_t vbe_line_offset;                   \
  74     uint32_t vbe_bank_mask;                     \
  75     int vbe_mapped;
  76 #else
  77
  78 #define VGA_STATE_COMMON_BOCHS_VBE
  79
  80 #endif /* !CONFIG_BOCHS_VBE */
  81
  82 #define CH_ATTR_SIZE (160 * 100)
  83 #define VGA_MAX_HEIGHT 2048
  84
  85 struct vga_precise_retrace {
  86     int64_t ticks_per_char;
  87     int64_t total_chars;
  88     int htotal;
  89     int hstart;
  90     int hend;
  91     int vstart;
  92     int vend;
  93     int freq;
  94 };
  95
  96 union vga_retrace {
  97     struct vga_precise_retrace precise;
  98 };
  99
 100 struct VGACommonState;
 101 typedef uint8_t (* vga_retrace_fn)(struct VGACommonState *s);
 102 typedef void (* vga_update_retrace_info_fn)(struct VGACommonState *s);
 103
 104 typedef struct VGACommonState {
 105     MemoryRegion *legacy_address_space;
 106     uint8_t *vram_ptr;
 107     MemoryRegion vram;
 108     MemoryRegion vram_vbe;
 109     uint32_t vram_size;
 110     uint32_t latch;
 111     MemoryRegion *chain4_alias;
 112     uint8_t sr_index;
 113     uint8_t sr[256];
 114     uint8_t gr_index;
 115     uint8_t gr[256];
 116     uint8_t ar_index;
 117     uint8_t ar[21];
 118     int ar_flip_flop;
 119     uint8_t cr_index;
 120     uint8_t cr[256]; /* CRT registers */
 121     uint8_t msr; /* Misc Output Register */
 122     uint8_t fcr; /* Feature Control Register */
 123     uint8_t st00; /* status 0 */
 124     uint8_t st01; /* status 1 */
 125     uint8_t dac_state;
 126     uint8_t dac_sub_index;
 127     uint8_t dac_read_index;
 128     uint8_t dac_write_index;
 129     uint8_t dac_cache[3]; /* used when writing */
 130     int dac_8bit;
 131     uint8_t palette[768];
 132     int32_t bank_offset;
 133     int (*get_bpp)(struct VGACommonState *s);
 134     void (*get_offsets)(struct VGACommonState *s,
 135                         uint32_t *pline_offset,
 136                         uint32_t *pstart_addr,
 137                         uint32_t *pline_compare);
 138     void (*get_resolution)(struct VGACommonState *s,
 139                         int *pwidth,
 140                         int *pheight);
 141     VGA_STATE_COMMON_BOCHS_VBE
 142     /* display refresh support */
 143     DisplayState *ds;
 144     uint32_t font_offsets[2];
 145     int graphic_mode;
 146     uint8_t shift_control;
 147     uint8_t double_scan;
 148     uint32_t line_offset;
 149     uint32_t line_compare;
 150     uint32_t start_addr;
 151     uint32_t plane_updated;
 152     uint32_t last_line_offset;
 153     uint8_t last_cw, last_ch;
 154     uint32_t last_width, last_height; /* in chars or pixels */
 155     uint32_t last_scr_width, last_scr_height; /* in pixels */
 156     uint32_t last_depth; /* in bits */
 157     uint8_t cursor_start, cursor_end;
 158     uint32_t cursor_offset;
 159     unsigned int (*rgb_to_pixel)(unsigned int r,
 160                                  unsigned int g, unsigned b);
 161     vga_hw_update_ptr update;
 162     vga_hw_invalidate_ptr invalidate;
 163     vga_hw_screen_dump_ptr screen_dump;
 164     vga_hw_text_update_ptr text_update;
 165     /* hardware mouse cursor support */
 166     uint32_t invalidated_y_table[VGA_MAX_HEIGHT / 32];
 167     void (*cursor_invalidate)(struct VGACommonState *s);
 168     void (*cursor_draw_line)(struct VGACommonState *s, uint8_t *d, int y);
 169     /* tell for each page if it has been updated since the last time */
 170     uint32_t last_palette[256];
 171     uint32_t last_ch_attr[CH_ATTR_SIZE]; /* XXX: make it dynamic */
 172     /* retrace */
 173     vga_retrace_fn retrace;
 174     vga_update_retrace_info_fn update_retrace_info;
 175     union vga_retrace retrace_info;
 176     uint8_t is_vbe_vmstate;
 177 } VGACommonState;
 178
 179 static inline int c6_to_8(int v)
 180 {
 181     int b;
 182     v &= 0x3f;
 183     b = v & 1;
 184     return (v << 2) | (b << 1) | b;
 185 }
 186
 187 void vga_common_init(VGACommonState *s, int vga_ram_size);
 188 void vga_init(VGACommonState *s, MemoryRegion *address_space,
 189               MemoryRegion *address_space_io, bool init_vga_ports);
 190 MemoryRegion *vga_init_io(VGACommonState *s,
 191                           const MemoryRegionPortio **vga_ports,
 192                           const MemoryRegionPortio **vbe_ports);
 193 void vga_common_reset(VGACommonState *s);
 194
 195 void vga_dirty_log_start(VGACommonState *s);
 196 void vga_dirty_log_stop(VGACommonState *s);
 197
 198 extern const VMStateDescription vmstate_vga_common;
 199 uint32_t vga_ioport_read(void *opaque, uint32_t addr);
 200 void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val);
 201 uint32_t vga_mem_readb(VGACommonState *s, target_phys_addr_t addr);
 202 void vga_mem_writeb(VGACommonState *s, target_phys_addr_t addr, uint32_t val);
 203 void vga_invalidate_scanlines(VGACommonState *s, int y1, int y2);
 204 int ppm_save(const char *filename, struct DisplaySurface *ds);
 205
 206 int vga_ioport_invalid(VGACommonState *s, uint32_t addr);
 207 void vga_init_vbe(VGACommonState *s, MemoryRegion *address_space);
 208
 209 extern const uint8_t sr_mask[8];
 210 extern const uint8_t gr_mask[16];
 211
 212 #define VGA_RAM_SIZE (8192 * 1024)
 213 #define VGABIOS_FILENAME "vgabios.bin"
 214 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
 215
 216 extern const MemoryRegionOps vga_mem_ops;