diff options
author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-06-05 10:30:49 +0000 |
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committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2004-06-05 10:30:49 +0000 |
commit | 798b0c25ccf5711e491d2e4c712e7c37936c79cd (patch) | |
tree | a3ea471ac4309353edc8bc61b01f199c1de94666 /hw/vga.c | |
parent | 22a56b8a87b2990c8684b6ca8a37d935dae76591 (diff) |
generic VGA API layer
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@890 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/vga.c')
-rw-r--r-- | hw/vga.c | 196 |
1 files changed, 69 insertions, 127 deletions
@@ -22,6 +22,7 @@ * THE SOFTWARE. */ #include "vl.h" +#include "vga_int.h" //#define DEBUG_VGA //#define DEBUG_VGA_MEM @@ -33,96 +34,8 @@ /* S3 VGA is deprecated - another graphic card will be emulated */ //#define CONFIG_S3VGA -#define MSR_COLOR_EMULATION 0x01 -#define MSR_PAGE_SELECT 0x20 - -#define ST01_V_RETRACE 0x08 -#define ST01_DISP_ENABLE 0x01 - -/* bochs VBE support */ -#define CONFIG_BOCHS_VBE - -#define VBE_DISPI_MAX_XRES 1024 -#define VBE_DISPI_MAX_YRES 768 - -#define VBE_DISPI_INDEX_ID 0x0 -#define VBE_DISPI_INDEX_XRES 0x1 -#define VBE_DISPI_INDEX_YRES 0x2 -#define VBE_DISPI_INDEX_BPP 0x3 -#define VBE_DISPI_INDEX_ENABLE 0x4 -#define VBE_DISPI_INDEX_BANK 0x5 -#define VBE_DISPI_INDEX_VIRT_WIDTH 0x6 -#define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7 -#define VBE_DISPI_INDEX_X_OFFSET 0x8 -#define VBE_DISPI_INDEX_Y_OFFSET 0x9 -#define VBE_DISPI_INDEX_NB 0xa - -#define VBE_DISPI_ID0 0xB0C0 -#define VBE_DISPI_ID1 0xB0C1 -#define VBE_DISPI_ID2 0xB0C2 - -#define VBE_DISPI_DISABLED 0x00 -#define VBE_DISPI_ENABLED 0x01 -#define VBE_DISPI_LFB_ENABLED 0x40 -#define VBE_DISPI_NOCLEARMEM 0x80 - -#define VBE_DISPI_LFB_PHYSICAL_ADDRESS 0xE0000000 - -typedef struct VGAState { - uint8_t *vram_ptr; - unsigned long vram_offset; - unsigned int vram_size; - uint32_t latch; - uint8_t sr_index; - uint8_t sr[8]; - uint8_t gr_index; - uint8_t gr[16]; - uint8_t ar_index; - uint8_t ar[21]; - int ar_flip_flop; - uint8_t cr_index; - uint8_t cr[256]; /* CRT registers */ - uint8_t msr; /* Misc Output Register */ - uint8_t fcr; /* Feature Control Register */ - uint8_t st00; /* status 0 */ - uint8_t st01; /* status 1 */ - uint8_t dac_state; - uint8_t dac_sub_index; - uint8_t dac_read_index; - uint8_t dac_write_index; - uint8_t dac_cache[3]; /* used when writing */ - uint8_t palette[768]; - int32_t bank_offset; -#ifdef CONFIG_BOCHS_VBE - uint16_t vbe_index; - uint16_t vbe_regs[VBE_DISPI_INDEX_NB]; - uint32_t vbe_start_addr; - uint32_t vbe_line_offset; - uint32_t vbe_bank_mask; -#endif - /* display refresh support */ - DisplayState *ds; - uint32_t font_offsets[2]; - int graphic_mode; - uint8_t shift_control; - uint8_t double_scan; - uint32_t line_offset; - uint32_t line_compare; - uint32_t start_addr; - uint8_t last_cw, last_ch; - uint32_t last_width, last_height; /* in chars or pixels */ - uint32_t last_scr_width, last_scr_height; /* in pixels */ - uint8_t cursor_start, cursor_end; - uint32_t cursor_offset; - unsigned int (*rgb_to_pixel)(unsigned int r, unsigned int g, unsigned b); - /* tell for each page if it has been updated since the last time */ - uint32_t last_palette[256]; -#define CH_ATTR_SIZE (160 * 100) - uint32_t last_ch_attr[CH_ATTR_SIZE]; /* XXX: make it dynamic */ -} VGAState; - /* force some bits to zero */ -static const uint8_t sr_mask[8] = { +const uint8_t sr_mask[8] = { (uint8_t)~0xfc, (uint8_t)~0xc2, (uint8_t)~0xf0, @@ -133,7 +46,7 @@ static const uint8_t sr_mask[8] = { (uint8_t)~0x00, }; -static const uint8_t gr_mask[16] = { +const uint8_t gr_mask[16] = { (uint8_t)~0xf0, /* 0x00 */ (uint8_t)~0xf0, /* 0x01 */ (uint8_t)~0xf0, /* 0x02 */ @@ -656,7 +569,7 @@ static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) #endif /* called for accesses between 0xa0000 and 0xc0000 */ -static uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr) +uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr) { VGAState *s = opaque; int memory_map_mode, plane; @@ -743,7 +656,7 @@ static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr) } /* called for accesses between 0xa0000 and 0xc0000 */ -static void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) +void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) { VGAState *s = opaque; int memory_map_mode, plane, write_mode, b, func_select; @@ -1027,14 +940,11 @@ static int update_palette256(VGAState *s) return full_update; } -/* update start_addr and line_offset. Return TRUE if modified */ -static int update_basic_params(VGAState *s) +static void vga_get_offsets(VGAState *s, + uint32_t *pline_offset, + uint32_t *pstart_addr) { - int full_update; - uint32_t start_addr, line_offset, line_compare; - - full_update = 0; - + uint32_t start_addr, line_offset; #ifdef CONFIG_BOCHS_VBE if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { line_offset = s->vbe_line_offset; @@ -1061,7 +971,19 @@ static int update_basic_params(VGAState *s) start_addr |= (s->cr[0x69] & 0x1f) << 16; /* S3 extension */ #endif } + *pline_offset = line_offset; + *pstart_addr = start_addr; +} + +/* update start_addr and line_offset. Return TRUE if modified */ +static int update_basic_params(VGAState *s) +{ + int full_update; + uint32_t start_addr, line_offset, line_compare; + full_update = 0; + + s->get_offsets(s, &line_offset, &start_addr); /* line compare */ line_compare = s->cr[0x18] | ((s->cr[0x07] & 0x10) << 4) | @@ -1373,6 +1295,20 @@ static vga_draw_line_func *vga_draw_line_table[4 * VGA_DRAW_LINE_NB] = { vga_draw_line32_32, }; +static int vga_get_bpp(VGAState *s) +{ + int ret; +#ifdef CONFIG_BOCHS_VBE + if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { + ret = s->vbe_regs[VBE_DISPI_INDEX_BPP]; + } else +#endif + { + ret = 0; + } + return ret; +} + /* * graphic modes * Missing: @@ -1429,32 +1365,28 @@ static void vga_draw_graphic(VGAState *s, int full_update) v = VGA_DRAW_LINE2; } } else { -#ifdef CONFIG_BOCHS_VBE - if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) { - switch(s->vbe_regs[VBE_DISPI_INDEX_BPP]) { - default: - case 8: - full_update |= update_palette256(s); - v = VGA_DRAW_LINE8; - break; - case 15: - v = VGA_DRAW_LINE15; - break; - case 16: - v = VGA_DRAW_LINE16; - break; - case 24: - v = VGA_DRAW_LINE24; - break; - case 32: - v = VGA_DRAW_LINE32; - break; - } - } else -#endif - { + switch(s->get_bpp(s)) { + default: + case 0: full_update |= update_palette256(s); v = VGA_DRAW_LINE8D2; + break; + case 8: + full_update |= update_palette256(s); + v = VGA_DRAW_LINE8; + break; + case 15: + v = VGA_DRAW_LINE15; + break; + case 16: + v = VGA_DRAW_LINE16; + break; + case 24: + v = VGA_DRAW_LINE24; + break; + case 32: + v = VGA_DRAW_LINE32; + break; } } vga_draw_line = vga_draw_line_table[v * 4 + get_depth_index(s->ds->depth)]; @@ -1747,11 +1679,9 @@ static void vga_map(PCIDevice *pci_dev, int region_num, cpu_register_physical_memory(addr, s->vram_size, s->vram_offset); } -int vga_initialize(DisplayState *ds, uint8_t *vga_ram_base, - unsigned long vga_ram_offset, int vga_ram_size, - int is_pci) +void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base, + unsigned long vga_ram_offset, int vga_ram_size) { - VGAState *s = &vga_state; int i, j, v, b; for(i = 0;i < 256; i++) { @@ -1783,6 +1713,18 @@ int vga_initialize(DisplayState *ds, uint8_t *vga_ram_base, s->vram_offset = vga_ram_offset; s->vram_size = vga_ram_size; s->ds = ds; + s->get_bpp = vga_get_bpp; + s->get_offsets = vga_get_offsets; +} + + +int vga_initialize(DisplayState *ds, uint8_t *vga_ram_base, + unsigned long vga_ram_offset, int vga_ram_size, + int is_pci) +{ + VGAState *s = &vga_state; + + vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size); register_savevm("vga", 0, 1, vga_save, vga_load, s); |