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#ifndef __VBE_H
#define __VBE_H
#include "types.h" // u8
#define VESA_SIGNATURE 0x41534556 // VESA
#define VBE2_SIGNATURE 0x32454256 // VBE2
struct vbe_info {
u32 signature;
u16 version;
struct segoff_s oem_string;
u32 capabilities;
struct segoff_s video_mode;
u16 total_memory;
u16 oem_revision;
struct segoff_s oem_vendor_string;
struct segoff_s oem_product_string;
struct segoff_s oem_revision_string;
u8 reserved[222];
} PACKED;
struct vbe_mode_info {
/* VBE */
u16 mode_attributes;
u8 winA_attributes;
u8 winB_attributes;
u16 win_granularity;
u16 win_size;
u16 winA_seg;
u16 winB_seg;
struct segoff_s win_func_ptr;
u16 bytes_per_scanline;
/* VBE 1.2 */
u16 xres;
u16 yres;
u8 xcharsize;
u8 ycharsize;
u8 planes;
u8 bits_per_pixel;
u8 banks;
u8 mem_model;
u8 bank_size;
u8 pages;
u8 reserved0;
/* Direct Color */
u8 red_size;
u8 red_pos;
u8 green_size;
u8 green_pos;
u8 blue_size;
u8 blue_pos;
u8 alpha_size;
u8 alpha_pos;
u8 directcolor_info;
/* VBE 2.0 */
u32 phys_base;
u32 reserved1;
u16 reserved2;
/* VBE 3.0 */
u16 linear_bytes_per_scanline;
u8 bank_pages;
u8 linear_pages;
u8 linear_red_size;
u8 linear_red_pos;
u8 linear_green_size;
u8 linear_green_pos;
u8 linear_blue_size;
u8 linear_blue_pos;
u8 linear_alpha_size;
u8 linear_alpha_pos;
u32 pixclock_max;
u8 reserved[190];
} PACKED;
struct vbe_crtc_info {
u16 horiz_total;
u16 horiz_sync_start;
u16 horiz_sync_end;
u16 vert_total;
u16 vert_sync_start;
u16 vert_sync_end;
u8 flags;
u32 pixclock;
u16 refresh_rate;
u8 reserved[40];
} PACKED;
/* VBE Return Status Info */
/* AL */
#define VBE_RETURN_STATUS_SUPPORTED 0x4F
#define VBE_RETURN_STATUS_UNSUPPORTED 0x00
/* AH */
#define VBE_RETURN_STATUS_SUCCESSFULL 0x00
#define VBE_RETURN_STATUS_FAILED 0x01
#define VBE_RETURN_STATUS_NOT_SUPPORTED 0x02
#define VBE_RETURN_STATUS_INVALID 0x03
/* VBE Mode Numbers */
#define VBE_MODE_VESA_DEFINED 0x0100
#define VBE_MODE_REFRESH_RATE_USE_CRTC 0x0800
#define VBE_MODE_LINEAR_FRAME_BUFFER 0x4000
#define VBE_MODE_PRESERVE_DISPLAY_MEMORY 0x8000
#define VBE_VESA_MODE_END_OF_LIST 0xFFFF
/* Capabilities */
#define VBE_CAPABILITY_8BIT_DAC 0x0001
#define VBE_CAPABILITY_NOT_VGA_COMPATIBLE 0x0002
#define VBE_CAPABILITY_RAMDAC_USE_BLANK_BIT 0x0004
#define VBE_CAPABILITY_STEREOSCOPIC_SUPPORT 0x0008
#define VBE_CAPABILITY_STEREO_VIA_VESA_EVC 0x0010
/* Mode Attributes */
#define VBE_MODE_ATTRIBUTE_SUPPORTED 0x0001
#define VBE_MODE_ATTRIBUTE_EXTENDED_INFORMATION_AVAILABLE 0x0002
#define VBE_MODE_ATTRIBUTE_TTY_BIOS_SUPPORT 0x0004
#define VBE_MODE_ATTRIBUTE_COLOR_MODE 0x0008
#define VBE_MODE_ATTRIBUTE_GRAPHICS_MODE 0x0010
#define VBE_MODE_ATTRIBUTE_NOT_VGA_COMPATIBLE 0x0020
#define VBE_MODE_ATTRIBUTE_NO_VGA_COMPATIBLE_WINDOW 0x0040
#define VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE 0x0080
#define VBE_MODE_ATTRIBUTE_DOUBLE_SCAN_MODE 0x0100
#define VBE_MODE_ATTRIBUTE_INTERLACE_MODE 0x0200
#define VBE_MODE_ATTRIBUTE_HARDWARE_TRIPLE_BUFFER 0x0400
#define VBE_MODE_ATTRIBUTE_HARDWARE_STEREOSCOPIC_DISPLAY 0x0800
#define VBE_MODE_ATTRIBUTE_DUAL_DISPLAY_START_ADDRESS 0x1000
#define VBE_MODE_ATTTRIBUTE_LFB_ONLY ( VBE_MODE_ATTRIBUTE_NO_VGA_COMPATIBLE_WINDOW | VBE_MODE_ATTRIBUTE_LINEAR_FRAME_BUFFER_MODE )
/* Window attributes */
#define VBE_WINDOW_ATTRIBUTE_RELOCATABLE 0x01
#define VBE_WINDOW_ATTRIBUTE_READABLE 0x02
#define VBE_WINDOW_ATTRIBUTE_WRITEABLE 0x04
/* Memory model */
#define VBE_MEMORYMODEL_TEXT_MODE 0x00
#define VBE_MEMORYMODEL_CGA_GRAPHICS 0x01
#define VBE_MEMORYMODEL_HERCULES_GRAPHICS 0x02
#define VBE_MEMORYMODEL_PLANAR 0x03
#define VBE_MEMORYMODEL_PACKED_PIXEL 0x04
#define VBE_MEMORYMODEL_NON_CHAIN_4_256 0x05
#define VBE_MEMORYMODEL_DIRECT_COLOR 0x06
#define VBE_MEMORYMODEL_YUV 0x07
/* DirectColorModeInfo */
#define VBE_DIRECTCOLOR_COLOR_RAMP_PROGRAMMABLE 0x01
#define VBE_DIRECTCOLOR_RESERVED_BITS_AVAILABLE 0x02
#endif
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