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 #define MSR_COLOR_EMULATION 0x01
  25 #define MSR_PAGE_SELECT     0x20
  26
  27 #define ST01_V_RETRACE      0x08
  28 #define ST01_DISP_ENABLE    0x01
  29
  30 /* bochs VBE support */
  31 #define CONFIG_BOCHS_VBE
  32
  33 #define VBE_DISPI_MAX_XRES              1024
  34 #define VBE_DISPI_MAX_YRES              768
  35
  36 #define VBE_DISPI_INDEX_ID              0x0
  37 #define VBE_DISPI_INDEX_XRES            0x1
  38 #define VBE_DISPI_INDEX_YRES            0x2
  39 #define VBE_DISPI_INDEX_BPP             0x3
  40 #define VBE_DISPI_INDEX_ENABLE          0x4
  41 #define VBE_DISPI_INDEX_BANK            0x5
  42 #define VBE_DISPI_INDEX_VIRT_WIDTH      0x6
  43 #define VBE_DISPI_INDEX_VIRT_HEIGHT     0x7
  44 #define VBE_DISPI_INDEX_X_OFFSET        0x8
  45 #define VBE_DISPI_INDEX_Y_OFFSET        0x9
  46 #define VBE_DISPI_INDEX_NB              0xa
  47
  48 #define VBE_DISPI_ID0                   0xB0C0
  49 #define VBE_DISPI_ID1                   0xB0C1
  50 #define VBE_DISPI_ID2                   0xB0C2
  51
  52 #define VBE_DISPI_DISABLED              0x00
  53 #define VBE_DISPI_ENABLED               0x01
  54 #define VBE_DISPI_LFB_ENABLED           0x40
  55 #define VBE_DISPI_NOCLEARMEM            0x80
  56
  57 #define VBE_DISPI_LFB_PHYSICAL_ADDRESS  0xE0000000
  58
  59 #ifdef CONFIG_BOCHS_VBE
  60
  61 #define VGA_STATE_COMMON_BOCHS_VBE              \
  62     uint16_t vbe_index;                         \
  63     uint16_t vbe_regs[VBE_DISPI_INDEX_NB];      \
  64     uint32_t vbe_start_addr;                    \
  65     uint32_t vbe_line_offset;                   \
  66     uint32_t vbe_bank_mask;
  67
  68 #else
  69
  70 #define VGA_STATE_COMMON_BOCHS_VBE
  71
  72 #endif /* !CONFIG_BOCHS_VBE */
  73
  74 #define CH_ATTR_SIZE (160 * 100)
  75 #define VGA_MAX_HEIGHT 1024
  76
  77 #define VGA_STATE_COMMON                                                \
  78     uint8_t *vram_ptr;                                                  \
  79     unsigned long vram_offset;                                          \
  80     unsigned int vram_size;                                             \
  81     unsigned long bios_offset;                                          \
  82     unsigned int bios_size;                                             \
  83     uint32_t latch;                                                     \
  84     uint8_t sr_index;                                                   \
  85     uint8_t sr[256];                                                    \
  86     uint8_t gr_index;                                                   \
  87     uint8_t gr[256];                                                    \
  88     uint8_t ar_index;                                                   \
  89     uint8_t ar[21];                                                     \
  90     int ar_flip_flop;                                                   \
  91     uint8_t cr_index;                                                   \
  92     uint8_t cr[256]; /* CRT registers */                                \
  93     uint8_t msr; /* Misc Output Register */                             \
  94     uint8_t fcr; /* Feature Control Register */                         \
  95     uint8_t st00; /* status 0 */                                        \
  96     uint8_t st01; /* status 1 */                                        \
  97     uint8_t dac_state;                                                  \
  98     uint8_t dac_sub_index;                                              \
  99     uint8_t dac_read_index;                                             \
 100     uint8_t dac_write_index;                                            \
 101     uint8_t dac_cache[3]; /* used when writing */                       \
 102     uint8_t palette[768];                                               \
 103     int32_t bank_offset;                                                \
 104     int (*get_bpp)(struct VGAState *s);                                 \
 105     void (*get_offsets)(struct VGAState *s,                             \
 106                         uint32_t *pline_offset,                         \
 107                         uint32_t *pstart_addr);                         \
 108     void (*get_resolution)(struct VGAState *s,                          \
 109                         int *pwidth,                                    \
 110                         int *pheight);                                  \
 111     VGA_STATE_COMMON_BOCHS_VBE                                          \
 112     /* display refresh support */                                       \
 113     DisplayState *ds;                                                   \
 114     uint32_t font_offsets[2];                                           \
 115     int graphic_mode;                                                   \
 116     uint8_t shift_control;                                              \
 117     uint8_t double_scan;                                                \
 118     uint32_t line_offset;                                               \
 119     uint32_t line_compare;                                              \
 120     uint32_t start_addr;                                                \
 121     uint32_t plane_updated;                                             \
 122     uint8_t last_cw, last_ch;                                           \
 123     uint32_t last_width, last_height; /* in chars or pixels */          \
 124     uint32_t last_scr_width, last_scr_height; /* in pixels */           \
 125     uint8_t cursor_start, cursor_end;                                   \
 126     uint32_t cursor_offset;                                             \
 127     unsigned int (*rgb_to_pixel)(unsigned int r,                        \
 128                                  unsigned int g, unsigned b);           \
 129     /* hardware mouse cursor support */                                 \
 130     uint32_t invalidated_y_table[VGA_MAX_HEIGHT / 32];                  \
 131     void (*cursor_invalidate)(struct VGAState *s);                      \
 132     void (*cursor_draw_line)(struct VGAState *s, uint8_t *d, int y);    \
 133     /* tell for each page if it has been updated since the last time */ \
 134     uint32_t last_palette[256];                                         \
 135     uint32_t last_ch_attr[CH_ATTR_SIZE]; /* XXX: make it dynamic */
 136
 137
 138 typedef struct VGAState {
 139     VGA_STATE_COMMON
 140 } VGAState;
 141
 142 static inline int c6_to_8(int v)
 143 {
 144     int b;
 145     v &= 0x3f;
 146     b = v & 1;
 147     return (v << 2) | (b << 1) | b;
 148 }
 149
 150 void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
 151                      unsigned long vga_ram_offset, int vga_ram_size);
 152 uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr);
 153 void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val);
 154 void vga_invalidate_scanlines(VGAState *s, int y1, int y2);
 155
 156 void vga_draw_cursor_line_8(uint8_t *d1, const uint8_t *src1,
 157                             int poffset, int w,
 158                             unsigned int color0, unsigned int color1,
 159                             unsigned int color_xor);
 160 void vga_draw_cursor_line_16(uint8_t *d1, const uint8_t *src1,
 161                              int poffset, int w,
 162                              unsigned int color0, unsigned int color1,
 163                              unsigned int color_xor);
 164 void vga_draw_cursor_line_32(uint8_t *d1, const uint8_t *src1,
 165                              int poffset, int w,
 166                              unsigned int color0, unsigned int color1,
 167                              unsigned int color_xor);
 168
 169 extern const uint8_t sr_mask[8];
 170 extern const uint8_t gr_mask[16];