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 MSR_COLOR_EMULATION 0x01
  29 #define MSR_PAGE_SELECT     0x20
  30
  31 #define ST01_V_RETRACE      0x08
  32 #define ST01_DISP_ENABLE    0x01
  33
  34 /* bochs VBE support */
  35 #define CONFIG_BOCHS_VBE
  36
  37 #define VBE_DISPI_MAX_XRES              1600
  38 #define VBE_DISPI_MAX_YRES              1200
  39 #define VBE_DISPI_MAX_BPP               32
  40
  41 #define VBE_DISPI_INDEX_ID              0x0
  42 #define VBE_DISPI_INDEX_XRES            0x1
  43 #define VBE_DISPI_INDEX_YRES            0x2
  44 #define VBE_DISPI_INDEX_BPP             0x3
  45 #define VBE_DISPI_INDEX_ENABLE          0x4
  46 #define VBE_DISPI_INDEX_BANK            0x5
  47 #define VBE_DISPI_INDEX_VIRT_WIDTH      0x6
  48 #define VBE_DISPI_INDEX_VIRT_HEIGHT     0x7
  49 #define VBE_DISPI_INDEX_X_OFFSET        0x8
  50 #define VBE_DISPI_INDEX_Y_OFFSET        0x9
  51 #define VBE_DISPI_INDEX_NB              0xa /* size of vbe_regs[] */
  52 #define VBE_DISPI_INDEX_VIDEO_MEMORY_64K 0xa /* read-only, not in vbe_regs */
  53
  54 #define VBE_DISPI_ID0                   0xB0C0
  55 #define VBE_DISPI_ID1                   0xB0C1
  56 #define VBE_DISPI_ID2                   0xB0C2
  57 #define VBE_DISPI_ID3                   0xB0C3
  58 #define VBE_DISPI_ID4                   0xB0C4
  59 #define VBE_DISPI_ID5                   0xB0C5
  60
  61 #define VBE_DISPI_DISABLED              0x00
  62 #define VBE_DISPI_ENABLED               0x01
  63 #define VBE_DISPI_GETCAPS               0x02
  64 #define VBE_DISPI_8BIT_DAC              0x20
  65 #define VBE_DISPI_LFB_ENABLED           0x40
  66 #define VBE_DISPI_NOCLEARMEM            0x80
  67
  68 #define VBE_DISPI_LFB_PHYSICAL_ADDRESS  0xE0000000
  69
  70 #ifdef CONFIG_BOCHS_VBE
  71
  72 #define VGA_STATE_COMMON_BOCHS_VBE              \
  73     uint16_t vbe_index;                         \
  74     uint16_t vbe_regs[VBE_DISPI_INDEX_NB];      \
  75     uint32_t vbe_start_addr;                    \
  76     uint32_t vbe_line_offset;                   \
  77     uint32_t vbe_bank_mask;                     \
  78     int vbe_mapped;
  79 #else
  80
  81 #define VGA_STATE_COMMON_BOCHS_VBE
  82
  83 #endif /* !CONFIG_BOCHS_VBE */
  84
  85 #define CH_ATTR_SIZE (160 * 100)
  86 #define VGA_MAX_HEIGHT 2048
  87
  88 struct vga_precise_retrace {
  89     int64_t ticks_per_char;
  90     int64_t total_chars;
  91     int htotal;
  92     int hstart;
  93     int hend;
  94     int vstart;
  95     int vend;
  96     int freq;
  97 };
  98
  99 union vga_retrace {
 100     struct vga_precise_retrace precise;
 101 };
 102
 103 struct VGACommonState;
 104 typedef uint8_t (* vga_retrace_fn)(struct VGACommonState *s);
 105 typedef void (* vga_update_retrace_info_fn)(struct VGACommonState *s);
 106
 107 typedef struct VGACommonState {
 108     uint8_t *vram_ptr;
 109     MemoryRegion vram;
 110     uint32_t vram_size;
 111     uint32_t latch;
 112     uint32_t lfb_vram_mapped; /* whether 0xa0000 is mapped as ram */
 113     uint8_t sr_index;
 114     uint8_t sr[256];
 115     uint8_t gr_index;
 116     uint8_t gr[256];
 117     uint8_t ar_index;
 118     uint8_t ar[21];
 119     int ar_flip_flop;
 120     uint8_t cr_index;
 121     uint8_t cr[256]; /* CRT registers */
 122     uint8_t msr; /* Misc Output Register */
 123     uint8_t fcr; /* Feature Control Register */
 124     uint8_t st00; /* status 0 */
 125     uint8_t st01; /* status 1 */
 126     uint8_t dac_state;
 127     uint8_t dac_sub_index;
 128     uint8_t dac_read_index;
 129     uint8_t dac_write_index;
 130     uint8_t dac_cache[3]; /* used when writing */
 131     int dac_8bit;
 132     uint8_t palette[768];
 133     int32_t bank_offset;
 134     MemoryRegion *vga_io_memory;
 135     int (*get_bpp)(struct VGACommonState *s);
 136     void (*get_offsets)(struct VGACommonState *s,
 137                         uint32_t *pline_offset,
 138                         uint32_t *pstart_addr,
 139                         uint32_t *pline_compare);
 140     void (*get_resolution)(struct VGACommonState *s,
 141                         int *pwidth,
 142                         int *pheight);
 143     VGA_STATE_COMMON_BOCHS_VBE
 144     /* display refresh support */
 145     DisplayState *ds;
 146     uint32_t font_offsets[2];
 147     int graphic_mode;
 148     uint8_t shift_control;
 149     uint8_t double_scan;
 150     uint32_t line_offset;
 151     uint32_t line_compare;
 152     uint32_t start_addr;
 153     uint32_t plane_updated;
 154     uint32_t last_line_offset;
 155     uint8_t last_cw, last_ch;
 156     uint32_t last_width, last_height; /* in chars or pixels */
 157     uint32_t last_scr_width, last_scr_height; /* in pixels */
 158     uint32_t last_depth; /* in bits */
 159     uint8_t cursor_start, cursor_end;
 160     uint32_t cursor_offset;
 161     unsigned int (*rgb_to_pixel)(unsigned int r,
 162                                  unsigned int g, unsigned b);
 163     vga_hw_update_ptr update;
 164     vga_hw_invalidate_ptr invalidate;
 165     vga_hw_screen_dump_ptr screen_dump;
 166     vga_hw_text_update_ptr text_update;
 167     /* hardware mouse cursor support */
 168     uint32_t invalidated_y_table[VGA_MAX_HEIGHT / 32];
 169     void (*cursor_invalidate)(struct VGACommonState *s);
 170     void (*cursor_draw_line)(struct VGACommonState *s, uint8_t *d, int y);
 171     /* tell for each page if it has been updated since the last time */
 172     uint32_t last_palette[256];
 173     uint32_t last_ch_attr[CH_ATTR_SIZE]; /* XXX: make it dynamic */
 174     /* retrace */
 175     vga_retrace_fn retrace;
 176     vga_update_retrace_info_fn update_retrace_info;
 177     union vga_retrace retrace_info;
 178     uint8_t is_vbe_vmstate;
 179 } VGACommonState;
 180
 181 static inline int c6_to_8(int v)
 182 {
 183     int b;
 184     v &= 0x3f;
 185     b = v & 1;
 186     return (v << 2) | (b << 1) | b;
 187 }
 188
 189 void vga_common_init(VGACommonState *s, int vga_ram_size);
 190 void vga_init(VGACommonState *s);
 191 MemoryRegion *vga_init_io(VGACommonState *s);
 192 void vga_common_reset(VGACommonState *s);
 193
 194 void vga_dirty_log_start(VGACommonState *s);
 195 void vga_dirty_log_stop(VGACommonState *s);
 196 void vga_dirty_log_restart(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 void vga_draw_cursor_line_8(uint8_t *d1, const uint8_t *src1,
 207                             int poffset, int w,
 208                             unsigned int color0, unsigned int color1,
 209                             unsigned int color_xor);
 210 void vga_draw_cursor_line_16(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_32(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
 219 int vga_ioport_invalid(VGACommonState *s, uint32_t addr);
 220 void vga_init_vbe(VGACommonState *s);
 221
 222 extern const uint8_t sr_mask[8];
 223 extern const uint8_t gr_mask[16];
 224
 225 #define VGA_RAM_SIZE (8192 * 1024)
 226 #define VGABIOS_FILENAME "vgabios.bin"
 227 #define VGABIOS_CIRRUS_FILENAME "vgabios-cirrus.bin"
 228
 229 extern const MemoryRegionOps vga_mem_ops;