X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fdisk.h;h=dd7c46aec3c19913d6cf257d62b5a2f706580cd3;hb=refs%2Fheads%2Fcoreboot;hp=04600f57e000982c3abfc3dbe43971af6534f871;hpb=4b60c000deee2002ba272b45a1121df7495c39f9;p=seabios.git diff --git a/src/disk.h b/src/disk.h index 04600f5..dd7c46a 100644 --- a/src/disk.h +++ b/src/disk.h @@ -2,19 +2,260 @@ // // Copyright (C) 2008 Kevin O'Connor // -// 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 "ioport.h" // outb +#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_ECHANGED 0x06 -#define DISK_RET_EBOUNDARY 0x09 -#define DISK_RET_ECONTROLLER 0x20 -#define DISK_RET_ETIMEOUT 0x80 -#define DISK_RET_EMEDIA 0xC0 +#define DISK_RET_SUCCESS 0x00 +#define DISK_RET_EPARAM 0x01 +#define DISK_RET_EADDRNOTFOUND 0x02 +#define DISK_RET_EWRITEPROTECT 0x03 +#define DISK_RET_ECHANGED 0x06 +#define DISK_RET_EBOUNDARY 0x09 +#define DISK_RET_EBADTRACK 0x0c +#define DISK_RET_ECONTROLLER 0x20 +#define DISK_RET_ETIMEOUT 0x80 +#define DISK_RET_ENOTLOCKED 0xb0 +#define DISK_RET_ELOCKED 0xb1 +#define DISK_RET_ENOTREMOVABLE 0xb2 +#define DISK_RET_ETOOMANYLOCKS 0xb4 +#define DISK_RET_EMEDIA 0xC0 +#define DISK_RET_ENOTREADY 0xAA -// floppy.c + +/**************************************************************** + * Interface structs + ****************************************************************/ + +// Bios disk structures. +struct int13ext_s { + u8 size; + u8 reserved; + u16 count; + struct segoff_s data; + u64 lba; +} PACKED; + +#define GET_INT13EXT(regs,var) \ + GET_FARVAR((regs)->ds, ((struct int13ext_s*)((regs)->si+0))->var) +#define SET_INT13EXT(regs,var,val) \ + SET_FARVAR((regs)->ds, ((struct int13ext_s*)((regs)->si+0))->var, (val)) + +// Disk Physical Table definition +struct int13dpt_s { + u16 size; + u16 infos; + u32 cylinders; + u32 heads; + u32 spt; + u64 sector_count; + u16 blksize; + u16 dpte_offset; + u16 dpte_segment; + u16 key; + u8 dpi_length; + u8 reserved1; + u16 reserved2; + u8 host_bus[4]; + u8 iface_type[8]; + u64 iface_path; + 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) \ + GET_FARVAR((regs)->ds, ((struct int13dpt_s*)((regs)->si+0))->var) +#define SET_INT13DPT(regs,var,val) \ + SET_FARVAR((regs)->ds, ((struct int13dpt_s*)((regs)->si+0))->var, (val)) + +// Floppy "Disk Base Table" +struct floppy_dbt_s { + u8 specify1; + u8 specify2; + u8 shutoff_ticks; + u8 bps_code; + u8 sectors; + u8 interblock_len; + u8 data_len; + u8 gap_len; + u8 fill_byte; + u8 settle_time; + u8 startup_time; +} PACKED; + +struct floppy_ext_dbt_s { + struct floppy_dbt_s dbt; + // Extra fields + u8 max_track; + u8 data_rate; + u8 drive_type; +} PACKED; + +// Helper function for setting up a return code. struct bregs; -void floppy_13(struct bregs *regs, u8 drive); -void floppy_tick(); +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 + + +/**************************************************************** + * 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_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 +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(struct drive_s *drive_g); + +// ramdisk.c +void ramdisk_setup(void); +int process_ramdisk_op(struct disk_op_s *op); + +#endif // disk.h