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#ifndef __BLOCK_H
#define __BLOCK_H
#include "types.h" // u32
/****************************************************************
* Disk command request
****************************************************************/
struct disk_op_s {
void *buf_fl;
struct drive_s *drive_gf;
u8 command;
u16 count;
union {
// Commands: READ, WRITE, VERIFY, SEEK, FORMAT
u64 lba;
// Commands: SCSI
struct {
u16 blocksize;
void *cdbcmd;
};
};
};
#define CMD_RESET 0x00
#define CMD_READ 0x02
#define CMD_WRITE 0x03
#define CMD_VERIFY 0x04
#define CMD_FORMAT 0x05
#define CMD_SEEK 0x07
#define CMD_ISREADY 0x10
#define CMD_SCSI 0x20
/****************************************************************
* Global storage
****************************************************************/
struct chs_s {
u16 head;
u16 cylinder;
u16 sector;
u16 pad;
};
struct drive_s {
u8 type; // Driver type (DTYPE_*)
u8 floppy_type; // Type of floppy (only for floppy drives).
struct chs_s lchs; // Logical CHS
u64 sectors; // Total sectors count
u32 cntl_id; // Unique id for a given driver type.
u8 removable; // Is media removable (currently unused)
// Info for EDD calls
u8 translation; // type of translation
u16 blksize; // block size
struct chs_s pchs; // Physical CHS
};
#define DISK_SECTOR_SIZE 512
#define CDROM_SECTOR_SIZE 2048
#define DTYPE_NONE 0x00
#define DTYPE_FLOPPY 0x10
#define DTYPE_ATA 0x20
#define DTYPE_ATA_ATAPI 0x21
#define DTYPE_RAMDISK 0x30
#define DTYPE_CDEMU 0x40
#define DTYPE_AHCI 0x50
#define DTYPE_AHCI_ATAPI 0x51
#define DTYPE_VIRTIO_SCSI 0x60
#define DTYPE_VIRTIO_BLK 0x61
#define DTYPE_USB 0x70
#define DTYPE_USB_32 0x71
#define DTYPE_UAS 0x72
#define DTYPE_UAS_32 0x73
#define DTYPE_LSI_SCSI 0x80
#define DTYPE_ESP_SCSI 0x81
#define DTYPE_MEGASAS 0x82
#define DTYPE_PVSCSI 0x83
#define DTYPE_SDCARD 0x90
#define MAXDESCSIZE 80
#define TRANSLATION_NONE 0
#define TRANSLATION_LBA 1
#define TRANSLATION_LARGE 2
#define TRANSLATION_RECHS 3
#define EXTTYPE_FLOPPY 0
#define EXTTYPE_HD 1
#define EXTTYPE_CD 2
#define EXTSTART_HD 0x80
#define EXTSTART_CD 0xE0
/****************************************************************
* Function defs
****************************************************************/
// block.c
extern u8 FloppyCount, CDCount;
extern u8 *bounce_buf_fl;
struct drive_s *getDrive(u8 exttype, u8 extdriveoffset);
int getDriveId(u8 exttype, struct drive_s *drive);
void map_floppy_drive(struct drive_s *drive);
void map_hd_drive(struct drive_s *drive);
void map_cd_drive(struct drive_s *drive);
struct int13dpt_s;
int fill_edd(struct segoff_s edd, struct drive_s *drive_gf);
int default_process_op(struct disk_op_s *op);
int process_op(struct disk_op_s *op);
int send_disk_op(struct disk_op_s *op);
int create_bounce_buf(void);
#endif // block.h
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