149116Sbostic /*- 249116Sbostic * Copyright (c) 1982, 1988, 1991 The Regents of the University of California. 335754Sbostic * All rights reserved. 423240Smckusick * 544517Sbostic * %sccs.include.redist.c% 635754Sbostic * 7*54072Shibler * @(#)saio.h 7.18 (Berkeley) 06/18/92 823240Smckusick */ 9325Sbill 10*54072Shibler #include <sys/time.h> 1153697Ssklower #include <ufs/ffs/fs.h> 1253697Ssklower #include <ufs/ufs/dinode.h> 1333627Sbostic #include "saioctl.h" 1433626Sbostic #include "saerrno.h" 1533626Sbostic 1638112Sbostic #define UNIX "/vmunix" 1749116Sbostic 1849116Sbostic #ifndef NULL 1933627Sbostic #define NULL 0 2049116Sbostic #endif 2133626Sbostic 2249116Sbostic /* I/O block */ 2333627Sbostic struct iob { 2449116Sbostic int i_flgs; /* flags (see F_*) */ 2535482Sbostic int i_adapt; /* adapter or bus */ 2633626Sbostic int i_ctlr; /* controller */ 2711363Ssam int i_unit; /* pseudo device unit */ 2833626Sbostic int i_part; /* disk partition */ 2911363Ssam daddr_t i_boff; /* block offset on device */ 3011363Ssam daddr_t i_cyloff; /* cylinder offset on device */ 3111363Ssam off_t i_offset; /* seek offset in file */ 3240499Smckusick dev_t i_dev; /* associated device */ 3311363Ssam daddr_t i_bn; /* 1st block # of next read */ 3449116Sbostic char *i_ma; /* memory address of I/O buffer */ 3511363Ssam int i_cc; /* character count of transfer */ 3611363Ssam int i_error; /* error # return */ 3711363Ssam int i_errcnt; /* error count for driver retries */ 3811363Ssam int i_errblk; /* block # in error for error reporting */ 3949116Sbostic char i_buf[MAXBSIZE];/* I/O buffer */ 4049116Sbostic struct dinode i_ino; /* dinode, if file */ 4149116Sbostic union { /* file system super block info */ 4249116Sbostic struct fs ui_fs; 436004Smckusic char dummy[SBSIZE]; 446004Smckusic } i_un; 4533627Sbostic #define i_fs i_un.ui_fs 4635482Sbostic #define i_bus i_adapt 4749116Sbostic }; 48325Sbill 4949116Sbostic #define SOPEN_MAX 4 5049116Sbostic extern struct iob iob[SOPEN_MAX]; 5149116Sbostic 5249116Sbostic /* Codes for sector header word 1 */ 5333632Sbostic #define HDR1_FMT22 0x1000 /* standard 16 bit format */ 5433632Sbostic #define HDR1_OKSCT 0xc000 /* sector ok */ 5533632Sbostic #define HDR1_SSF 0x2000 /* skip sector flag */ 5633632Sbostic 5749116Sbostic /* I/O flag values */ 5835754Sbostic #define F_READ 0x0001 /* file opened for reading */ 5935754Sbostic #define F_WRITE 0x0002 /* file opened for writing */ 6035754Sbostic #define F_ALLOC 0x0004 /* buffer allocated */ 6135754Sbostic #define F_FILE 0x0008 /* file instead of device */ 6235754Sbostic #define F_NBSF 0x0010 /* no bad sector forwarding */ 6335754Sbostic #define F_ECCLM 0x0020 /* limit # of bits in ecc correction */ 6435754Sbostic #define F_SSI 0x0040 /* set skip sector inhibit */ 6535754Sbostic #define F_SEVRE 0x0080 /* Severe burnin (no retries, no ECC) */ 6633626Sbostic 6749116Sbostic /* I/O types */ 6810022Ssam #define F_RDDATA 0x0100 /* read data */ 6910022Ssam #define F_WRDATA 0x0200 /* write data */ 7033627Sbostic #define F_HDR 0x0400 /* include header on next i/o */ 7133627Sbostic #define F_CHECK 0x0800 /* perform check of data read/write */ 7233627Sbostic #define F_HCHECK 0x1000 /* perform check of header and data */ 73325Sbill 7449116Sbostic #define F_TYPEMASK 0xff00 /* I/O type mask */ 7510022Ssam 7649116Sbostic /* Lseek values */ 7733626Sbostic #define L_SET 0 /* absolute offset */ 7833626Sbostic 7949116Sbostic /* Device switch */ 80325Sbill struct devsw { 81325Sbill char *dv_name; 82325Sbill int (*dv_strategy)(); 83325Sbill int (*dv_open)(); 84325Sbill int (*dv_close)(); 8510022Ssam int (*dv_ioctl)(); 86325Sbill }; 87325Sbill 8833627Sbostic extern struct devsw devsw[]; /* device array */ 8933627Sbostic extern int ndevs; /* number of elements in devsw[] */ 90325Sbill 9133042Skarels #ifdef COMPAT_42 9211139Ssam /* 9333042Skarels * Old drive description table. 9433042Skarels * still used by some drivers for now. 9533042Skarels */ 9633042Skarels struct st { 9733042Skarels short nsect; /* # sectors/track */ 9833042Skarels short ntrak; /* # tracks/surfaces/heads */ 9933042Skarels short nspc; /* # sectors/cylinder */ 10033042Skarels short ncyl; /* # cylinders */ 10133042Skarels short *off; /* partition offset table (cylinders) */ 10233042Skarels }; 10333042Skarels #endif 104