src/disk.h

// 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.

#include "ioport.h" // outb

#define DISK_RET_SUCCESS     0x00
#define DISK_RET_EPARAM      0x01
#define DISK_RET_ECHANGED    0x06
#define DISK_RET_EBOUNDARY   0x09
#define DISK_RET_ECONTROLLER 0x20
#define DISK_RET_ETIMEOUT    0x80
#define DISK_RET_EMEDIA      0xC0

static inline void
eoi_master_pic()
{
    outb(PIC1_IRQ5, PORT_PIC1);
}

static inline void
eoi_both_pics()
{
    outb(PIC2_IRQ13, PORT_PIC2);
    eoi_master_pic();
}

// floppy.c
struct bregs;
void floppy_13(struct bregs *regs, u8 drive);
void floppy_tick();