date and time created 88/07/22 16:08:01 by bostic

[unix-history] / usr / src / sys / stand.att / saio.h

diff --git a/usr/src/sys/stand.att/saio.h b/usr/src/sys/stand.att/saio.h
index e86b59e..ef53593 100644 (file)
--- a/usr/src/sys/stand.att/saio.h
+++ b/usr/src/sys/stand.att/saio.h
@@ -1,59 +1,106 @@
-/*     saio.h  1.1     %G%     */
-

 /*
 /*

- * header file for standalone package
+ * Copyright (c) 1982, 1988 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ *
+ *     @(#)saio.h      7.8 (Berkeley) %G%

  */
 
  */
 

+#include "saioctl.h"
+#include "saerrno.h"
+
+#define        UNIX    "/vmunix"
+#define        NULL    0
+

 /*
 /*

- * io block: includes an
- * inode, cells for the use of seek, etc,
+ * Io block: includes an inode, cells for the use of seek, etc.,

  * and a buffer.
  */
  * and a buffer.
  */

-struct iob {
-       char    i_flgs;
-       struct  inode i_ino;
-       int     i_unit;
-       daddr_t i_boff;
-       daddr_t i_cyloff;
-       off_t   i_offset;
-       daddr_t i_bn;
-       char    *i_ma;
-       int     i_cc;
-       char    i_buf[BSIZE];
+struct iob {
+       int     i_flgs;         /* see F_ below */
+       int     i_adapt;        /* adapter */
+       int     i_ctlr;         /* controller */
+       int     i_unit;         /* pseudo device unit */
+       int     i_part;         /* disk partition */
+       daddr_t i_boff;         /* block offset on device */
+       struct  inode i_ino;    /* inode, if file */
+       daddr_t i_cyloff;       /* cylinder offset on device */
+       off_t   i_offset;       /* seek offset in file */
+       daddr_t i_bn;           /* 1st block # of next read */
+       char    *i_ma;          /* memory address of i/o buffer */
+       int     i_cc;           /* character count of transfer */
+       int     i_error;        /* error # return */
+       int     i_errcnt;       /* error count for driver retries */
+       int     i_errblk;       /* block # in error for error reporting */
+       char    i_buf[MAXBSIZE];/* i/o buffer */
+       union {
+               struct fs ui_fs;        /* file system super block info */
+               char dummy[SBSIZE];
+       } i_un;

 };
 };

+#define        i_fs    i_un.ui_fs
+
+/* codes for sector header word 1 */
+#define        HDR1_FMT22      0x1000  /* standard 16 bit format */
+#define        HDR1_OKSCT      0xc000  /* sector ok */
+#define        HDR1_SSF        0x2000  /* skip sector flag */
+
+#define        F_READ          0x1     /* file opened for reading */
+#define        F_WRITE         0x2     /* file opened for writing */
+#define        F_ALLOC         0x4     /* buffer allocated */
+#define        F_FILE          0x8     /* file instead of device */
+#define        F_NBSF          0x10    /* no bad sector forwarding */
+#define        F_ECCLM         0x20    /* limit # of bits in ecc correction */
+#define        F_SSI           0x40    /* set skip sector inhibit */
+#define        F_SEVRE         0x80    /* Severe burnin (no retries, no ECC) */
+
+/* io types */
+#define        F_RDDATA        0x0100  /* read data */
+#define        F_WRDATA        0x0200  /* write data */
+#define        F_HDR           0x0400  /* include header on next i/o */
+#define        F_CHECK         0x0800  /* perform check of data read/write */
+#define        F_HCHECK        0x1000  /* perform check of header and data */
+
+#define        F_TYPEMASK      0xff00
+
+/*
+ * Request codes. Must be the same as F_XXX above
+ */
+#define        READ    F_READ
+#define        WRITE   F_WRITE

 
 

-#define F_READ 01
-#define F_WRITE        02
-#define F_ALLOC        04
-#define F_FILE 010
+/*
+ * Lseek call.
+ */
+#define        L_SET           0       /* absolute offset */

 
 /*
 
 /*

- * dev switch
+ * Device switch.

  */
 struct devsw {
        char    *dv_name;
        int     (*dv_strategy)();
        int     (*dv_open)();
        int     (*dv_close)();
  */
 struct devsw {
        char    *dv_name;
        int     (*dv_strategy)();
        int     (*dv_open)();
        int     (*dv_close)();

+       int     (*dv_ioctl)();

 };
 
 };
 

-struct devsw devsw[];
+extern struct devsw devsw[];   /* device array */
+extern int ndevs;              /* number of elements in devsw[] */

 
 

+#ifdef COMPAT_42

 /*
 /*

- * request codes. Must be the same a F_XXX above
+ * Old drive description table.
+ * still used by some drivers for now.

  */
  */

-#define        READ    1
-#define        WRITE   2
-
-#define        NBUFS   4
-
-char   b[NBUFS][BSIZE];
-daddr_t        blknos[NBUFS];
-
-#define NFILES 4
-struct iob iob[NFILES];
+struct st {
+       short   nsect;          /* # sectors/track */
+       short   ntrak;          /* # tracks/surfaces/heads */
+       short   nspc;           /* # sectors/cylinder */
+       short   ncyl;           /* # cylinders */
+       short   *off;           /* partition offset table (cylinders) */
+};
+#endif

 
 

-#define        PHYSUBA0        0x20006000
-#define        PHYSMBA0        0x20010000
-#define        PHYSMBA1        0x20012000
-#define        PHYSUMEM        0x2013e000
+#define        NFILES  4
+extern struct  iob iob[NFILES];