| // Definitions for X86 bios disks. |
| // |
| // Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> |
| // |
| // This file may be distributed under the terms of the GNU GPLv3 license. |
| #ifndef __DISK_H |
| #define __DISK_H |
| |
| #include "types.h" // u8 |
| |
| #define DISK_RET_SUCCESS 0x00 |
| #define DISK_RET_EPARAM 0x01 |
| #define DISK_RET_EADDRNOTFOUND 0x02 |
| #define DISK_RET_EWRITEPROTECT 0x03 |
| #define DISK_RET_ECHANGED 0x06 |
| #define DISK_RET_EBOUNDARY 0x09 |
| #define DISK_RET_EBADTRACK 0x0c |
| #define DISK_RET_ECONTROLLER 0x20 |
| #define DISK_RET_ETIMEOUT 0x80 |
| #define DISK_RET_ENOTLOCKED 0xb0 |
| #define DISK_RET_ELOCKED 0xb1 |
| #define DISK_RET_ENOTREMOVABLE 0xb2 |
| #define DISK_RET_ETOOMANYLOCKS 0xb4 |
| #define DISK_RET_EMEDIA 0xC0 |
| #define DISK_RET_ENOTREADY 0xAA |
| |
| // Bios disk structures. |
| struct int13ext_s { |
| u8 size; |
| u8 reserved; |
| u16 count; |
| u16 offset; |
| u16 segment; |
| u64 lba; |
| } PACKED; |
| |
| #define GET_INT13EXT(regs,var) \ |
| GET_FARVAR((regs)->ds, ((struct int13ext_s*)((regs)->si+0))->var) |
| #define SET_INT13EXT(regs,var,val) \ |
| SET_FARVAR((regs)->ds, ((struct int13ext_s*)((regs)->si+0))->var, (val)) |
| |
| // Disk Physical Table definition |
| struct int13dpt_s { |
| u16 size; |
| u16 infos; |
| u32 cylinders; |
| u32 heads; |
| u32 spt; |
| u64 sector_count; |
| u16 blksize; |
| u16 dpte_offset; |
| u16 dpte_segment; |
| u16 key; |
| u8 dpi_length; |
| u8 reserved1; |
| u16 reserved2; |
| u8 host_bus[4]; |
| u8 iface_type[8]; |
| u64 iface_path; |
| u64 device_path; |
| u8 reserved3; |
| u8 checksum; |
| } PACKED; |
| |
| #define GET_INT13DPT(regs,var) \ |
| GET_FARVAR((regs)->ds, ((struct int13dpt_s*)((regs)->si+0))->var) |
| #define SET_INT13DPT(regs,var,val) \ |
| SET_FARVAR((regs)->ds, ((struct int13dpt_s*)((regs)->si+0))->var, (val)) |
| |
| // Floppy "Disk Base Table" |
| struct floppy_dbt_s { |
| u8 specify1; |
| u8 specify2; |
| u8 shutoff_ticks; |
| u8 bps_code; |
| u8 sectors; |
| u8 interblock_len; |
| u8 data_len; |
| u8 gap_len; |
| u8 fill_byte; |
| u8 settle_time; |
| u8 startup_time; |
| } PACKED; |
| |
| struct floppy_ext_dbt_s { |
| struct floppy_dbt_s dbt; |
| // Extra fields |
| u8 max_track; |
| u8 data_rate; |
| u8 drive_type; |
| } PACKED; |
| |
| // Helper function for setting up a return code. |
| struct bregs; |
| void __disk_ret(const char *fname, int lineno, struct bregs *regs, u8 code); |
| #define disk_ret(regs, code) \ |
| __disk_ret(__func__, __LINE__, (regs), (code)) |
| |
| // floppy.c |
| extern struct floppy_ext_dbt_s diskette_param_table2; |
| void floppy_drive_setup(); |
| void floppy_13(struct bregs *regs, u8 drive); |
| void floppy_tick(); |
| |
| // disk.c |
| void disk_13(struct bregs *regs, u8 device); |
| void disk_13XX(struct bregs *regs, u8 device); |
| |
| // cdrom.c |
| int cdrom_read_emu(u16 device, u32 lba, u32 count, void *far_buffer); |
| void cdrom_13(struct bregs *regs, u8 device); |
| void cdemu_13(struct bregs *regs); |
| void cdemu_134b(struct bregs *regs); |
| int cdrom_boot(); |
| |
| |
| #endif // disk.h |