#include "types.h" // u8
#include "config.h" // CONFIG_*
+#include "farptr.h" // struct segoff_s
#define DISK_RET_SUCCESS 0x00
#define DISK_RET_EPARAM 0x01
u8 size;
u8 reserved;
u16 count;
- u16 offset;
- u16 segment;
+ struct segoff_s data;
u64 lba;
} PACKED;
void __disk_ret(struct bregs *regs, u32 linecode, const char *fname);
#define disk_ret(regs, code) \
__disk_ret((regs), (code) | (__LINE__ << 8), __func__)
+void __disk_ret_unimplemented(struct bregs *regs, u32 linecode
+ , const char *fname);
+#define disk_ret_unimplemented(regs, code) \
+ __disk_ret_unimplemented((regs), (code) | (__LINE__ << 8), __func__)
+
+
+/****************************************************************
+ * Master boot record
+ ****************************************************************/
+
+struct packed_chs_s {
+ u8 heads;
+ u8 sptcyl;
+ u8 cyllow;
+};
+
+struct partition_s {
+ u8 status;
+ struct packed_chs_s first;
+ u8 type;
+ struct packed_chs_s last;
+ u32 lba;
+ u32 count;
+} PACKED;
+
+struct mbr_s {
+ u8 code[440];
+ // 0x01b8
+ u32 diskseg;
+ // 0x01bc
+ u16 null;
+ // 0x01be
+ struct partition_s partitions[4];
+ // 0x01fe
+ u16 signature;
+} PACKED;
+
+#define MBR_SIGNATURE 0xaa55
/****************************************************************
struct disk_op_s {
u64 lba;
- void *far_buffer;
+ void *buf_fl;
+ struct drive_s *drive_g;
u16 count;
- u8 driveid;
u8 command;
};
-#define CMD_CDROM_READ 1
-#define CMD_CDEMU_READ 2
+#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
/****************************************************************
u16 spt; // # sectors / track
};
-struct ata_channel_s {
- u16 iobase1; // IO Base 1
- u16 iobase2; // IO Base 2
- u16 pci_bdf;
- u8 irq; // IRQ
+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
+ char *desc; // Drive description (only available during POST)
+ 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
};
-struct ata_device_s {
- u8 type; // Detected type of ata (ata/atapi/none/unknown)
- u8 device; // Detected type of attached devices (hd/cd/none)
- u8 removable; // Removable device flag
- u8 mode; // transfer mode : PIO 16/32 bits - IRQ - ISADMA - PCIDMA
- u16 blksize; // block size
+#define DISK_SECTOR_SIZE 512
+#define CDROM_SECTOR_SIZE 2048
- u8 translation; // type of translation
- struct chs_s lchs; // Logical CHS
- struct chs_s pchs; // Physical CHS
+#define DTYPE_NONE 0x00
+#define DTYPE_FLOPPY 0x01
+#define DTYPE_ATA 0x02
+#define DTYPE_ATAPI 0x03
+#define DTYPE_RAMDISK 0x04
+#define DTYPE_CDEMU 0x05
+#define DTYPE_USB 0x06
+#define DTYPE_VIRTIO 0x07
+#define DTYPE_AHCI 0x08
- u64 sectors; // Total sectors count
-};
+#define MAXDESCSIZE 80
-struct ata_s {
- // ATA channels info
- struct ata_channel_s channels[CONFIG_MAX_ATA_INTERFACES];
+#define TRANSLATION_NONE 0
+#define TRANSLATION_LBA 1
+#define TRANSLATION_LARGE 2
+#define TRANSLATION_RECHS 3
- // ATA devices info
- struct ata_device_s devices[CONFIG_MAX_ATA_DEVICES];
- //
- // map between bios hd/cd id and ata channels
+struct drives_s {
+ // map between bios floppy/hd/cd id and drive_s struct
+ u8 floppycount;
u8 cdcount;
- u8 idmap[2][CONFIG_MAX_ATA_DEVICES];
+ struct drive_s *idmap[3][CONFIG_MAX_EXTDRIVE];
};
+#define EXTTYPE_FLOPPY 0
+#define EXTTYPE_HD 1
+#define EXTTYPE_CD 2
+
+#define EXTSTART_HD 0x80
+#define EXTSTART_CD 0xE0
+
/****************************************************************
* Function defs
****************************************************************/
-// ata.c
-extern struct ata_s ATA;
-int ata_cmd_data(struct disk_op_s *op);
-int cdrom_read(struct disk_op_s *op);
-int cdrom_read_512(struct disk_op_s *op);
-int ata_cmd_packet(int driveid, u8 *cmdbuf, u8 cmdlen
- , u32 length, void *far_buffer);
-void ata_reset(int driveid);
-void hard_drive_setup();
+// block.c
+extern struct drives_s Drives;
+struct drive_s *getDrive(u8 exttype, u8 extdriveoffset);
+void setup_translation(struct drive_s *drive_g);
+void map_floppy_drive(struct drive_s *drive_g);
+void map_hd_drive(struct drive_s *drive_g);
+void map_cd_drive(struct drive_s *drive_g);
+int process_op(struct disk_op_s *op);
+int send_disk_op(struct disk_op_s *op);
// 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);
+void floppy_setup(void);
+struct drive_s *addFloppy(int floppyid, int ftype, int driver);
+int find_floppy_type(u32 size);
+int process_floppy_op(struct disk_op_s *op);
+void floppy_tick(void);
// cdrom.c
-void cdrom_13(struct bregs *regs, u8 device);
-void cdemu_13(struct bregs *regs);
+extern struct drive_s *cdemu_drive_gf;
+int process_cdemu_op(struct disk_op_s *op);
+void cdemu_setup(void);
void cdemu_134b(struct bregs *regs);
-int cdrom_boot();
+int cdrom_boot(int cdid);
+
+// ramdisk.c
+void ramdisk_setup(void);
+int process_ramdisk_op(struct disk_op_s *op);
#endif // disk.h