#ifndef SMOKBLKDEV_H
#define SMOKBLKDEV_H

// Block device sector size
#define BLK_SECTOR_SIZE		512

// Block device controller status masks
#define BLK_READING_MASK	0x00008000
#define BLK_WRITING_MASK	0x00004000
#define BLK_EXCEPTION_MASK	0x00002000
#define BLK_CAUSE_MASK		0x000000ff

#define BLK_READY_MASK		(BLK_READING_MASK | BLK_WRITING_MASK | BLK_EXCEPTION_MASK)
// ready when ~(status reg & BLK_READ_MASK) is 0

// control commands
#define	BLK_START_READ		BLK_READING_MASK
#define BLK_START_WRITE		BLK_WRITING_MASK
#define BLK_CLEAR		BLK_EXCEPTION_MASK

// Block device controller exception cause values
#define BLK_EX_IO_COMP		0x00000000
#define BLK_EX_MEM_ADDR		0x00000001
#define BLK_EX_DISK_ADDR	0x00000002
#define BLK_EX_BUSY		0x00000003
#define BLK_EX_UNALIGNED	0x00000004
#define BLK_EX_BAD_CTRL		0x00000005
#define BLK_EX_ZERO_COUNT	0x00000006

#endif // SMOKBLKDEV_H