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
  27 #define MSR_COLOR_EMULATION 0x01
  28 #define MSR_PAGE_SELECT     0x20
  29
  30 #define ST01_V_RETRACE      0x08
  31 #define ST01_DISP_ENABLE    0x01
  32
  33 /* bochs VBE support */
  34 #define CONFIG_BOCHS_VBE
  35
  36 #define VBE_DISPI_MAX_XRES              1600
  37 #define VBE_DISPI_MAX_YRES              1200
  38 #define VBE_DISPI_MAX_BPP               32
  39
  40 #define VBE_DISPI_INDEX_ID              0x0
  41 #define VBE_DISPI_INDEX_XRES            0x1
  42 #define VBE_DISPI_INDEX_YRES            0x2
  43 #define VBE_DISPI_INDEX_BPP             0x3
  44 #define VBE_DISPI_INDEX_ENABLE          0x4
  45 #define VBE_DISPI_INDEX_BANK            0x5
  46 #define VBE_DISPI_INDEX_VIRT_WIDTH      0x6
  47 #define VBE_DISPI_INDEX_VIRT_HEIGHT     0x7
  48 #define VBE_DISPI_INDEX_X_OFFSET        0x8
  49 #define VBE_DISPI_INDEX_Y_OFFSET        0x9
  50 #define VBE_DISPI_INDEX_NB              0xa /* size of vbe_regs[] */
  51 #define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa /* read-only, not in vbe_regs */
  52
  53 #define VBE_DISPI_ID0                   0xB0C0
  54 #define VBE_DISPI_ID1                   0xB0C1
  55 #define VBE_DISPI_ID2                   0xB0C2
  56 #define VBE_DISPI_ID3                   0xB0C3
  57 #define VBE_DISPI_ID4                   0xB0C4
  58 #define VBE_DISPI_ID5                   0xB0C5
  59
  60 #define VBE_DISPI_DISABLED              0x00
  61 #define VBE_DISPI_ENABLED               0x01
  62 #define VBE_DISPI_GETCAPS               0x02
  63 #define VBE_DISPI_8BIT_DAC              0x20
  64 #define VBE_DISPI_LFB_ENABLED           0x40
  65 #define VBE_DISPI_NOCLEARMEM            0x80
  66
  67 #define VBE_DISPI_LFB_PHYSICAL_ADDRESS  0xE0000000
  68
  69 #ifdef CONFIG_BOCHS_VBE
  70
  71 #define VGA_STATE_COMMON_BOCHS_VBE              \
  72     uint16_t vbe_index;                         \
  73     uint16_t vbe_regs[VBE_DISPI_INDEX_NB];      \
  74     uint32_t vbe_start_addr;                    \
  75     uint32_t vbe_line_offset;                   \
  76     uint32_t vbe_bank_mask;                     \
  77     int vbe_mapped;
  78 #else
  79
  80 #define VGA_STATE_COMMON_BOCHS_VBE
  81
  82 #endif /* !CONFIG_BOCHS_VBE */
  83
  84 #define CH_ATTR_SIZE (160 * 100)
  85 #define VGA_MAX_HEIGHT 2048
  86
  87 struct vga_precise_retrace {
  88     int64_t ticks_per_char;
  89     int64_t total_chars;
  90     int htotal;
  91     int hstart;
  92     int hend;
  93     int vstart;
  94     int vend;
  95     int freq;
  96 };
  97
  98 union vga_retrace {
  99     struct vga_precise_retrace precise;
 100 };
 101
 102 struct VGACommonState;
 103 typedef uint8_t (* vga_retrace_fn)(struct VGACommonState *s);
 104 typedef void (* vga_update_retrace_info_fn)(struct VGACommonState *s);
 105
 106 typedef struct VGACommonState {
 107     uint8_t *vram_ptr;
 108     ram_addr_t vram_offset;
 109     unsigned int vram_size;
 110     uint32_t lfb_addr;
 111     uint32_t lfb_end;
 112     uint32_t map_addr;
 113     uint32_t map_end;
 114     uint32_t lfb_vram_mapped; /* whether 0xa0000 is mapped as ram */
 115     uint32_t bios_offset;
 116     uint32_t bios_size;
 117     uint32_t latch;
 118     uint8_t sr_index;
 119     uint8_t sr[256];
 120     uint8_t gr_index;
 121     uint8_t gr[256];
 122     uint8_t ar_index;
 123     uint8_t ar[21];
 124     int ar_flip_flop;
 125     uint8_t cr_index;
 126     uint8_t cr[256]; /* CRT registers */
 127     uint8_t msr; /* Misc Output Register */
 128     uint8_t fcr; /* Feature Control Register */
 129     uint8_t st00; /* status 0 */
 130     uint8_t st01; /* status 1 */
 131     uint8_t dac_state;
 132     uint8_t dac_sub_index;
 133     uint8_t dac_read_index;
 134     uint8_t dac_write_index;
 135     uint8_t dac_cache[3]; /* used when writing */
 136     int dac_8bit;
 137     uint8_t palette[768];
 138     int32_t bank_offset;
 139     int vga_io_memory;
 140     int (*get_bpp)(struct VGACommonState *s);
 141     void (*get_offsets)(struct VGACommonState *s,
 142                         uint32_t *pline_offset,
 143                         uint32_t *pstart_addr,
 144                         uint32_t *pline_compare);
 145     void (*get_resolution)(struct VGACommonState *s,
 146                         int *pwidth,
 147                         int *pheight);
 148     VGA_STATE_COMMON_BOCHS_VBE
 149     /* display refresh support */
 150     DisplayState *ds;
 151     uint32_t font_offsets[2];
 152     int graphic_mode;
 153     uint8_t shift_control;
 154     uint8_t double_scan;
 155     uint32_t line_offset;
 156     uint32_t line_compare;
 157     uint32_t start_addr;
 158     uint32_t plane_updated;
 159     uint32_t last_line_offset;
 160     uint8_t last_cw, last_ch;
 161     uint32_t last_width, last_height; /* in chars or pixels */
 162     uint32_t last_scr_width, last_scr_height; /* in pixels */
 163     uint32_t last_depth; /* in bits */
 164     uint8_t cursor_start, cursor_end;
 165     uint32_t cursor_offset;
 166     unsigned int (*rgb_to_pixel)(unsigned int r,
 167                                  unsigned int g, unsigned b);
 168     vga_hw_update_ptr update;
 169     vga_hw_invalidate_ptr invalidate;
 170     vga_hw_screen_dump_ptr screen_dump;
 171     vga_hw_text_update_ptr text_update;
 172     /* hardware mouse cursor support */
 173     uint32_t invalidated_y_table[VGA_MAX_HEIGHT / 32];
 174     void (*cursor_invalidate)(struct VGACommonState *s);
 175     void (*cursor_draw_line)(struct VGACommonState *s, uint8_t *d, int y);
 176     /* tell for each page if it has been updated since the last time */
 177     uint32_t last_palette[256];
 178     uint32_t last_ch_attr[CH_ATTR_SIZE]; /* XXX: make it dynamic */
 179     /* retrace */
 180     vga_retrace_fn retrace;
 181     vga_update_retrace_info_fn update_retrace_info;
 182     union vga_retrace retrace_info;
 183     uint8_t is_vbe_vmstate;
 184 } VGACommonState;
 185
 186 static inline int c6_to_8(int v)
 187 {
 188     int b;
 189     v &= 0x3f;
 190     b = v & 1;
 191     return (v << 2) | (b << 1) | b;
 192 }
 193
 194 void vga_common_init(VGACommonState *s, int vga_ram_size);
 195 void vga_init(VGACommonState *s);
 196 void vga_common_reset(VGACommonState *s);
 197
 198 void vga_dirty_log_start(VGACommonState *s);
 199 void vga_dirty_log_stop(VGACommonState *s);
 200 void vga_dirty_log_restart(VGACommonState *s);
 201
 202 extern const VMStateDescription vmstate_vga_common;
 203 uint32_t vga_ioport_read(void *opaque, uint32_t addr);
 204 void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val);
 205 uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr);
 206 void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val);
 207 void vga_invalidate_scanlines(VGACommonState *s, int y1, int y2);
 208 int ppm_save(const char *filename, struct DisplaySurface *ds);
 209
 210 void vga_draw_cursor_line_8(uint8_t *d1, const uint8_t *src1,
 211                             int poffset, int w,
 212                             unsigned int color0, unsigned int color1,
 213                             unsigned int color_xor);
 214 void vga_draw_cursor_line_16(uint8_t *d1, const uint8_t *src1,
 215                              int poffset, int w,
 216                              unsigned int color0, unsigned int color1,
 217                              unsigned int color_xor);
 218 void vga_draw_cursor_line_32(uint8_t *d1, const uint8_t *src1,
 219                              int poffset, int w,
 220                              unsigned int color0, unsigned int color1,
 221                              unsigned int color_xor);
 222
 223 int vga_ioport_invalid(VGACommonState *s, uint32_t addr);
 224 void vga_init_vbe(VGACommonState *s);
 225
 226 extern const uint8_t sr_mask[8];
 227 extern const uint8_t gr_mask[16];
 228
 229 #define VGA_RAM_SIZE (8192 * 1024)
 230 #define VGABIOS_FILENAME "vgabios.bin"
 231 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
 232
 233 extern CPUReadMemoryFunc * const vga_mem_read[3];
 234 extern CPUWriteMemoryFunc * const vga_mem_write[3];