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/*-
* Copyright (c) 2009 Jared D. McNeill <jmcneill@invisible.ca>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Default mode for VESA frame buffer.
* This mode is selected when there is no EDID inormation and
* mode is not provided by user.
* To provide consistent look with UEFI GOP, we use 800x600 here,
* and if this mode is not available, we fall back to text mode and
* VESA disabled.
*/
#define VBE_DEFAULT_MODE "800x600"
struct vbeinfoblock {
char VbeSignature[4];
uint16_t VbeVersion;
uint32_t OemStringPtr;
uint32_t Capabilities;
#define VBE_CAP_DAC8 (1 << 0) /* Can switch DAC */
#define VBE_CAP_NONVGA (1 << 1) /* Controller is not VGA comp. */
#define VBE_CAP_SNOW (1 << 2) /* Set data during Vertical Reterace */
uint32_t VideoModePtr;
uint16_t TotalMemory;
uint16_t OemSoftwareRev;
uint32_t OemVendorNamePtr, OemProductNamePtr, OemProductRevPtr;
/* data area, in total max 512 bytes for VBE 2.0 */
uint8_t Reserved[222];
uint8_t OemData[256];
} __packed;
struct modeinfoblock {
/* Mandatory information for all VBE revisions */
uint16_t ModeAttributes;
uint8_t WinAAttributes, WinBAttributes;
uint16_t WinGranularity, WinSize, WinASegment, WinBSegment;
uint32_t WinFuncPtr;
uint16_t BytesPerScanLine;
/* Mandatory information for VBE 1.2 and above */
uint16_t XResolution, YResolution;
uint8_t XCharSize, YCharSize, NumberOfPlanes, BitsPerPixel;
uint8_t NumberOfBanks, MemoryModel, BankSize, NumberOfImagePages;
uint8_t Reserved1;
/* Direct Color fields
(required for direct/6 and YUV/7 memory models) */
uint8_t RedMaskSize, RedFieldPosition;
uint8_t GreenMaskSize, GreenFieldPosition;
uint8_t BlueMaskSize, BlueFieldPosition;
uint8_t RsvdMaskSize, RsvdFieldPosition;
uint8_t DirectColorModeInfo;
/* Mandatory information for VBE 2.0 and above */
uint32_t PhysBasePtr;
uint32_t OffScreenMemOffset; /* reserved in VBE 3.0 and above */
uint16_t OffScreenMemSize; /* reserved in VBE 3.0 and above */
/* Mandatory information for VBE 3.0 and above */
uint16_t LinBytesPerScanLine;
uint8_t BnkNumberOfImagePages;
uint8_t LinNumberOfImagePages;
uint8_t LinRedMaskSize, LinRedFieldPosition;
uint8_t LinGreenMaskSize, LinGreenFieldPosition;
uint8_t LinBlueMaskSize, LinBlueFieldPosition;
uint8_t LinRsvdMaskSize, LinRsvdFieldPosition;
uint32_t MaxPixelClock;
/* + 1 will fix the size to 256 bytes */
uint8_t Reserved4[189 + 1];
} __packed;
struct crtciinfoblock {
uint16_t HorizontalTotal;
uint16_t HorizontalSyncStart;
uint16_t HorizontalSyncEnd;
uint16_t VerticalTotal;
uint16_t VerticalSyncStart;
uint16_t VerticalSyncEnd;
uint8_t Flags;
uint32_t PixelClock;
uint16_t RefreshRate;
uint8_t Reserved[40];
} __packed;
struct paletteentry {
uint8_t Blue;
uint8_t Green;
uint8_t Red;
uint8_t Reserved;
} __packed;
struct flatpanelinfo
{
uint16_t HorizontalSize;
uint16_t VerticalSize;
uint16_t PanelType;
uint8_t RedBPP;
uint8_t GreenBPP;
uint8_t BlueBPP;
uint8_t ReservedBPP;
uint32_t ReservedOffScreenMemSize;
uint32_t ReservedOffScreenMemPtr;
uint8_t Reserved[14];
} __packed;
#define VBE_BASE_MODE (0x100) /* VBE 3.0 page 18 */
#define VBE_VALID_MODE(a) ((a) >= VBE_BASE_MODE)
#define VBE_ERROR(a) (((a) & 0xFF) != 0x4F || ((a) & 0xFF00) != 0)
#define VBE_SUCCESS (0x004F)
#define VBE_FAILED (0x014F)
#define VBE_NOTSUP (0x024F)
#define VBE_INVALID (0x034F)
#define VGA_TEXT_MODE (3) /* 80x25 text mode */
#define TEXT_ROWS (25) /* VGATEXT rows */
#define TEXT_COLS (80) /* VGATEXT columns */
extern struct paletteentry *pe8;
extern int palette_format;
int vga_get_reg(int, int);
int vga_get_atr(int, int);
void vga_set_atr(int, int, int);
void vga_set_indexed(int, int, int, uint8_t, uint8_t);
int vga_get_indexed(int, int, int, uint8_t);
int vga_get_crtc(int, int);
void vga_set_crtc(int, int, int);
int vga_get_seq(int, int);
void vga_set_seq(int, int, int);
int vga_get_grc(int, int);
void vga_set_grc(int, int, int);
/* high-level VBE helpers, from vbe.c */
void bios_set_text_mode(int);
int biosvbe_palette_format(int *);
void vbe_init(void);
bool vbe_available(void);
int vbe_default_mode(void);
int vbe_set_mode(int);
int vbe_get_mode(void);
int vbe_set_palette(const struct paletteentry *, size_t);
void vbe_modelist(int);