//
// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net>
//
-// This file may be distributed under the terms of the GNU GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
#ifndef __DISK_H
#define __DISK_H
#include "types.h" // u8
+#include "config.h" // CONFIG_*
+#include "farptr.h" // struct segoff_s
#define DISK_RET_SUCCESS 0x00
#define DISK_RET_EPARAM 0x01
#define DISK_RET_EMEDIA 0xC0
#define DISK_RET_ENOTREADY 0xAA
+
+/****************************************************************
+ * Interface structs
+ ****************************************************************/
+
// Bios disk structures.
struct int13ext_s {
u8 size;
u8 reserved;
u16 count;
- u16 offset;
- u16 segment;
+ struct segoff_s data;
u64 lba;
} PACKED;
u8 host_bus[4];
u8 iface_type[8];
u64 iface_path;
- u64 device_path;
- u8 reserved3;
- u8 checksum;
+ union {
+ struct {
+ u64 device_path;
+ u8 reserved3;
+ u8 checksum;
+ } phoenix;
+ struct {
+ u64 device_path[2];
+ u8 reserved3;
+ u8 checksum;
+ } t13;
+ };
} PACKED;
#define GET_INT13DPT(regs,var) \
// Helper function for setting up a return code.
struct bregs;
-void __disk_ret(const char *fname, int lineno, struct bregs *regs, u8 code);
+void __disk_ret(struct bregs *regs, u32 linecode, const char *fname);
#define disk_ret(regs, code) \
- __disk_ret(__func__, __LINE__, (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
+
+
+/****************************************************************
+ * Disk command request
+ ****************************************************************/
+
+struct disk_op_s {
+ u64 lba;
+ void *buf_fl;
+ struct drive_s *drive_g;
+ u16 count;
+ u8 command;
+};
+
+#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
+
+
+/****************************************************************
+ * Global storage
+ ****************************************************************/
+
+struct chs_s {
+ u16 heads; // # heads
+ u16 cylinders; // # cylinders
+ u16 spt; // # sectors / track
+};
+
+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 0x01
+#define DTYPE_ATA 0x02
+#define DTYPE_ATAPI 0x03
+#define DTYPE_RAMDISK 0x04
+#define DTYPE_CDEMU 0x05
+#define DTYPE_USB 0x06
+#define DTYPE_VIRTIO_BLK 0x07
+#define DTYPE_AHCI 0x08
+
+#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_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);
+int bounce_buf_init(void);
// 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 *init_floppy(int floppyid, int ftype);
+int find_floppy_type(u32 size);
+int process_floppy_op(struct disk_op_s *op);
+void floppy_tick(void);
// 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);
+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(struct drive_s *drive_g);
+// ramdisk.c
+void ramdisk_setup(void);
+int process_ramdisk_op(struct disk_op_s *op);
#endif // disk.h
projects / seabios.git / blobdiff