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#ifndef __BOCHSVGA_H
#define __BOCHSVGA_H
#include "types.h" // u8
#include "ioport.h" // outb
#define VBE_DISPI_BANK_ADDRESS 0xA0000
#define VBE_DISPI_BANK_SIZE_KB 64
#define VBE_DISPI_MAX_XRES 2560
#define VBE_DISPI_MAX_YRES 1600
#define VBE_DISPI_IOPORT_INDEX 0x01CE
#define VBE_DISPI_IOPORT_DATA 0x01CF
#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_VIDEO_MEMORY_64K 0xa
#define VBE_DISPI_ID0 0xB0C0
#define VBE_DISPI_ID1 0xB0C1
#define VBE_DISPI_ID2 0xB0C2
#define VBE_DISPI_ID3 0xB0C3
#define VBE_DISPI_ID4 0xB0C4
#define VBE_DISPI_ID5 0xB0C5
#define VBE_DISPI_DISABLED 0x00
#define VBE_DISPI_ENABLED 0x01
#define VBE_DISPI_GETCAPS 0x02
#define VBE_DISPI_8BIT_DAC 0x20
#define VBE_DISPI_LFB_ENABLED 0x40
#define VBE_DISPI_NOCLEARMEM 0x80
#define VBE_DISPI_LFB_PHYSICAL_ADDRESS 0xE0000000
static inline u16 dispi_read(u16 reg)
{
outw(reg, VBE_DISPI_IOPORT_INDEX);
return inw(VBE_DISPI_IOPORT_DATA);
}
static inline void dispi_write(u16 reg, u16 val)
{
outw(reg, VBE_DISPI_IOPORT_INDEX);
outw(val, VBE_DISPI_IOPORT_DATA);
}
int bochsvga_init(u8 bus, u8 devfn);
int bochsvga_enabled(void);
u16 bochsvga_total_mem(void);
int bochsvga_list_modes(u16 seg, u16 ptr);
struct vbe_modeinfo;
int bochsvga_mode_info(u16 mode, struct vbe_modeinfo *info);
void bochsvga_hires_enable(int enable);
void bochsvga_set_mode(u16 mode, struct vbe_modeinfo *info);
void bochsvga_clear_scr(void);
int bochsvga_hires_enabled(void);
u16 bochsvga_curr_mode(void);
#endif // bochsvga.h
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