149 lines
4.2 KiB
C
149 lines
4.2 KiB
C
/*******************************************************************************/
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/* COS2000 - Compatible Operating System - LGPL v3 - Hordé Nicolas */
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/* */
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#include "types.h"
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#include "video.h"
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#define TEXTSCREEN 0xB8000 /* debut de la memoire video texte */
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#define GRPHSCREEN 0xA0000 /* debut de la memoire video graphique */
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#define ENDOFVMEM 0xC0000
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/* Registres VGAs */
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#define SEQUENCER 0x3c4
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#define MISC_WRITE 0x3c2
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#define MISC_READ 0x3cc
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#define CCRT 0x3D4
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#define ATTRIBS 0x3c0
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#define GRAPHICS 0x3ce
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#define STATE 0x3da
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/* Taille d'un plan de bit */
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#define PLANESIZE 0x10000
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/* Registres VGA */
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typedef struct misc_regs
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{
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u8 Miscellaneous_Output_Register;
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} misc_regs __attribute__ ((packed));
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typedef struct sequencer_regs
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{
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u8 Reset_Register;
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u8 Clocking_Mode_Register;
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u8 Map_Mask_Register;
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u8 Character_Map_Select_Register;
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u8 Sequencer_Memory_Mode_Register;
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} sequencer_regs __attribute__ ((packed));
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typedef struct crtc_regs
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{
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u8 Horizontal_Total_Register;
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u8 End_Horizontal_Display_Register;
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u8 Start_Horizontal_Blanking_Register;
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u8 End_Horizontal_Blanking_Register;
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u8 Start_Horizontal_Retrace_Register;
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u8 End_Horizontal_Retrace_Register;
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u8 Vertical_Total_Register;
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u8 Overflow_Register;
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u8 Preset_Row_Scan_Register;
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u8 Maximum_Scan_Line_Register;
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u8 Cursor_Start_Register;
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u8 Cursor_End_Register;
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u8 Start_Address_High_Register;
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u8 Start_Address_Low_Register;
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u8 Cursor_Location_High_Register;
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u8 Cursor_Location_Low_Register;
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u8 Vertical_Retrace_Start_Register;
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u8 Vertical_Retrace_End_Register;
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u8 Vertical_Display_End_Register;
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u8 Offset_Register;
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u8 Underline_Location_Register;
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u8 Start_Vertical_Blanking_Register;
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u8 End_Vertical_Blanking;
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u8 CRTC_Mode_Control_Register;
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u8 Line_Compare_Register;
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} crtc_regs __attribute__ ((packed));
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typedef struct graphics_regs
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{
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u8 Set_Reset_Register;
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u8 Enable_Set_Reset_Register;
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u8 Color_Compare_Register;
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u8 Data_Rotate_Register;
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u8 Read_Map_Select_Register;
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u8 Graphics_Mode_Register;
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u8 Miscellaneous_Graphics_Register;
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u8 Color_Dont_Care_Register;
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u8 Bit_Mask_Register;
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} graphics_regs __attribute__ ((packed));
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typedef struct attributs_regs
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{
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u8 Palette_Registers[16];
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u8 Attribute_Mode_Control_Register;
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u8 Overscan_Color_Register;
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u8 Color_Plane_Enable_Register;
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u8 Horizontal_Pixel_Panning_Register;
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u8 Color_Select_Register;
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} attributs_regs __attribute__ ((packed));
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typedef struct vgamode
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{
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misc_regs misc;
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sequencer_regs sequencer;
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crtc_regs ctrc;
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graphics_regs graphic;
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attributs_regs attribut;
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} vgamode __attribute__ ((packed));
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/* fonction obligatoires */
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void VGA_remap_memory(u32 vaddr);
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u8 *VGA_detect_hardware(void);
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u8 VGA_setvideo_mode(u8 mode);
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u8 *VGA_getvideo_drivername(void);
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u8 *VGA_getvideo_capabilities(void);
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videoinfos *VGA_getvideo_info(void);
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u32 VGA_mem_to_video(void *src, u32 dst, u32 size, bool increment_src);
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u32 VGA_video_to_mem(u32 src, void *dst, u32 size);
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u32 VGA_video_to_video(u32 src, u32 dst, u32 size);
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void VGA_wait_vretrace(void);
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void VGA_wait_hretrace(void);
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void VGA_page_set(u8 page);
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void VGA_page_show(u8 page);
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void VGA_page_split(u16 y);
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void VGA_cursor_enable(void);
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void VGA_cursor_disable(void);
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void VGA_cursor_set(u16 x, u16 y);
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u32 VGA_font_load(u8 * def, u8 size, u8 font);
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void VGA_font1_set(u8 num);
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void VGA_font2_set(u8 num);
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void VGA_blink_enable(void);
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void VGA_blink_disable(void);
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static videofonction vgafonctions = {
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&VGA_remap_memory,
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&VGA_detect_hardware,
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&VGA_setvideo_mode,
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&VGA_getvideo_drivername,
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&VGA_getvideo_capabilities,
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&VGA_getvideo_info,
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&VGA_mem_to_video,
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&VGA_video_to_mem,
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&VGA_video_to_video,
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&VGA_wait_vretrace,
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&VGA_wait_hretrace,
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&VGA_page_set,
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&VGA_page_show,
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&VGA_page_split,
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&VGA_cursor_enable,
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&VGA_cursor_disable,
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&VGA_cursor_set,
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&VGA_font_load,
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&VGA_font1_set,
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&VGA_font2_set,
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&VGA_blink_enable,
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&VGA_blink_disable
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};
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