haiku/headers/private/graphics/vesa/vesa.h

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/*
* Copyright 2004-2009, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*/
#ifndef VESA_H
#define VESA_H
#include <SupportDefs.h>
/* VBE info block structure */
#define VESA_SIGNATURE 'ASEV'
#define VBE2_SIGNATURE '2EBV'
struct vbe_info_block {
// VBE 1.x fields
uint32 signature;
struct {
uint8 minor;
uint8 major;
} version;
uint32 oem_string;
uint32 capabilities;
uint32 mode_list;
uint16 total_memory; // in 64k blocks
// VBE 2.0+ fields only
// Note, the block is 256 bytes in size for VBE 1.x as well,
// but doesn't define these fields. VBE 3 doesn't define
// any additional fields.
uint16 oem_software_revision;
uint32 oem_vendor_name_string;
uint32 oem_product_name_string;
uint32 oem_product_revision_string;
uint8 reserved[222];
uint8 oem_data[256];
} _PACKED;
/* VBE mode info structure */
struct vbe_mode_info {
uint16 attributes;
uint8 window_a_attributes;
uint8 window_b_attributes;
uint16 window_granulatiry;
uint16 window_size;
uint16 window_a_segment;
uint16 window_b_segment;
uint32 window_function; // real mode pointer
uint16 bytes_per_row;
// VBE 1.2 and above
uint16 width;
uint16 height;
uint8 char_width;
uint8 char_height;
uint8 num_planes;
uint8 bits_per_pixel;
uint8 num_banks;
uint8 memory_model;
uint8 bank_size;
uint8 num_image_pages;
uint8 _reserved0;
// direct color fields
uint8 red_mask_size;
uint8 red_field_position;
uint8 green_mask_size;
uint8 green_field_position;
uint8 blue_mask_size;
uint8 blue_field_position;
uint8 reserved_mask_size;
uint8 reserved_field_position;
uint8 direct_color_mode_info;
// VBE 2.0 and above
uint32 physical_base;
uint32 _reserved1;
uint16 _reserved2;
// VBE 3.0 and above
uint16 linear_bytes_per_row;
uint8 banked_num_image_pages;
uint8 linear_num_image_pages;
uint8 linear_red_mask_size;
uint8 linear_red_field_position;
uint8 linear_green_mask_size;
uint8 linear_green_field_position;
uint8 linear_blue_mask_size;
uint8 linear_blue_field_position;
uint8 linear_reserved_mask_size;
uint8 linear_reserved_field_position;
uint32 max_pixel_clock; // in Hz
uint8 _reserved[189];
} _PACKED;
// definitions of mode info attributes
#define MODE_ATTR_AVAILABLE 1
#define MODE_ATTR_COLOR_MODE 8
#define MODE_ATTR_GRAPHICS_MODE 16
#define MODE_ATTR_LINEAR_BUFFER 128
// memory models
#define MODE_MEMORY_TEXT 0
#define MODE_MEMORY_PLANAR 3
#define MODE_MEMORY_PACKED_PIXEL 4
#define MODE_MEMORY_DIRECT_COLOR 6
#define MODE_MEMORY_YUV 7
// set mode flags
#define SET_MODE_MASK 0x01ff
#define SET_MODE_SPECIFY_CRTC (1 << 11)
#define SET_MODE_LINEAR_BUFFER (1 << 14)
#define SET_MODE_DONT_CLEAR_MEMORY (1 << 15)
/* CRTC info block structure */
struct crtc_info_block {
uint16 horizontal_total;
uint16 horizontal_sync_start;
uint16 horizontal_sync_end;
uint16 vertical_total;
uint16 vertical_sync_start;
uint16 vertical_sync_end;
uint8 flags;
uint32 pixel_clock; // in Hz
uint16 refresh_rate; // in 0.01 Hz
uint8 _reserved[40];
} _PACKED;
#define CRTC_DOUBLE_SCAN 0x01
#define CRTC_INTERLACED 0x02
#define CRTC_NEGATIVE_HSYNC 0x04
#define CRTC_NEGATIVE_VSYNC 0x08
/* Power Management */
#define DPMS_ON 0x00
#define DPMS_STANDBY 0x01
#define DPMS_SUSPEND 0x02
#define DPMS_OFF 0x04
#define DPMS_REDUCED_ON 0x08
/* VBE 3.0 protected mode interface
* The BIOS area can be scanned for the protected mode
* signature that identifies the structure below.
*/
#define VBE_PM_SIGNATURE 'DIMP'
struct vbe_protected_mode_info {
uint32 signature;
int16 entry_offset;
int16 init_offset;
uint16 data_selector;
uint16 a000_selector;
uint16 b000_selector;
uint16 b800_selector;
uint16 c000_selector;
uint8 in_protected_mode;
uint8 checksum;
} _PACKED;
#endif /* VESA_H */