usr/src/uts/intel/sys/sysi86.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 /*      Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T */
  28 /*        All Rights Reserved */
  29
  30 #ifndef _SYS_SYSI86_H
  31 #define _SYS_SYSI86_H
  32
  33 #pragma ident   "%Z%%M% %I%     %E% SMI"
  34
  35 #ifdef  __cplusplus
  36 extern "C" {
  37 #endif
  38
  39 #ifndef DIRSIZ
  40 #define DIRSIZ  14
  41 #endif
  42
  43 /*
  44  * Commands for sysi86 system call (1-?)
  45  */
  46
  47 #define SI86SWPI        1       /* General swap interface. */
  48 #define SI86SYM         2       /* acquire boot-built symbol table */
  49 #define SI86CONF        4       /* acquire boot-built configuration table */
  50 #define SI86BOOT        5       /* acquire timestamp and name of program */
  51                                 /*      booted */
  52 #define SI86AUTO        9       /* was an auto-config boot done? */
  53 #define SI86EDT         10      /* copy contents of EDT to user */
  54 #define SI86SWAP        12      /* Declare swap space */
  55 #define SI86FPHW        40      /* what (if any?) floating-point hardware */
  56 #define SI86FPSTART     41      /* extended version of SI86FPHW */
  57
  58 #define GRNON           52      /* set green light to solid on state */
  59 #define GRNFLASH        53      /* start green light flashing */
  60 #define STIME           54      /* set internal time */
  61 #define SETNAME         56      /* rename the system */
  62 #define RNVR            58      /* read NVRAM */
  63 #define WNVR            59      /* write NVRAM */
  64 #define RTODC           60      /* read time of day clock */
  65 #define CHKSER          61      /* check soft serial number */
  66 #define SI86NVPRT       62      /* print an xtra_nvr structure */
  67 #define SANUPD          63      /* sanity update of kernel buffers */
  68 #define SI86KSTR        64      /* make a copy of a kernel string */
  69 #define SI86MEM         65      /* return the memory size of system */
  70 #define SI86TODEMON     66      /* Transfer control to firmware. */
  71 #define SI86CCDEMON     67      /* Control character access to demon. */
  72 #define SI86CACHE       68      /* Turn cache on and off. */
  73 #define SI86DELMEM      69      /* Delete available memory for testing. */
  74 #define SI86ADDMEM      70      /* Add back deleted memory. */
  75 /*      71 through 74 reserved for VPIX */
  76 #define SI86V86         71      /* V86 system calls (see below) */
  77 #define SI86SLTIME      72      /* Set local time correction */
  78 #define SI86DSCR        75      /* Set a segment or gate descriptor */
  79 #define RDUBLK          76      /* Read U Block */
  80 /* NFA entry point */
  81 #define SI86NFA         77      /* make nfa_sys system call */
  82 #define SI86VM86        81
  83 #define SI86VMENABLE    82
  84 #define SI86LIMUSER     91      /* license interface */
  85 #define SI86RDID        92      /* ROM BIOS Machid ID */
  86 #define SI86RDBOOT      93      /* Bootable Non-SCSI Hard Disk */
  87 /* XENIX Support */
  88 #define SI86SHFIL       100     /* map a file into addr space of a proc */
  89 #define SI86PCHRGN      101     /* make globally visible change to a region */
  90 #define SI86BADVISE     102     /* badvise subcommand - see below for */
  91                                 /*      badvise subfunction definitions */
  92 #define SI86SHRGN       103     /* enable/disable XENIX small model shared */
  93                                 /*      data context switching */
  94 #define SI86CHIDT       104     /* set user level int 0xf0, ... 0xff handlers */
  95 #define SI86EMULRDA     105     /* remove special emulator read access */
  96
  97 /*
  98  *      NOTE: Numbers 106 - 110 have been registered and are reserved
  99  *      for future use for AT&T hardware.
 100  */
 101
 102 /*
 103  *      Commands for allowing the real time clock to keep local time.
 104  */
 105
 106 #define WTODC           111     /* write tod clock */
 107 #define SGMTL           112     /* set GMT lag */
 108 #define GGMTL           113     /* get GMT lag */
 109 #define RTCSYNC         114     /* set UNIX 'time' based on RTC and GMT lag */
 110
 111 #define V86SC_IOPL      4       /* The only supported V86 system call */
 112
 113 /*
 114  *  The SI86DSCR subcommand of the sysi86() system call
 115  *  sets a segment or gate descriptor in the kernel.
 116  *  The following descriptor types are accepted:
 117  *    - executable and data segments in the LDT at DPL 3
 118  *    - a call gate in the GDT at DPL 3 that points to a segment in the LDT
 119  *  The request structure declared below is used to pass the values
 120  *  to be placed in the descriptor.  A pointer to the structure is
 121  *  passed as the second argument of the system call.
 122  *  If acc1 is zero, the descriptor is cleared.
 123  */
 124
 125 /*
 126  * XX64 Do we need to support this for 64-bit apps?
 127  *
 128  * request structure passed by user
 129  */
 130 struct ssd {
 131         unsigned int    sel;   /* descriptor selector */
 132         unsigned int    bo;    /* segment base or gate offset */
 133         unsigned int    ls;    /* segment limit or gate selector */
 134         unsigned int    acc1;  /* access byte 5 */
 135         unsigned int    acc2;  /* access bits in byte 6 or gate count */
 136 };
 137
 138 #define SI86SSD_TYPE(ssd)       ((ssd)->acc1 & 0x1F)
 139 #define SI86SSD_DPL(ssd)        (((ssd)->acc1 >> 5) & 0x3)
 140 #define SI86SSD_PRES(ssd)       (((ssd)->acc1 >> 7) & 1)
 141 #define SI86SSD_ISUSEG(ssd)     (SI86SSD_TYPE(ssd) >= SDT_MEMRO)
 142 #define SI86SSD_ISLONG(ssd)     ((ssd)->acc2 & 0x2)
 143
 144 #ifdef _KERNEL
 145 extern void usd_to_ssd(user_desc_t *, struct ssd *, selector_t);
 146 extern int setdscr(struct ssd *);
 147 #endif  /* _KERNEL */
 148
 149 /*
 150  *  The SI86SHFIL subcommand of the sysi86() system call
 151  *  maps a file into a region in user address space.
 152  *  The request structure declared below is used to pass the
 153  *  system call parameters.  A pointer to the structure is
 154  *  passed as the second argument of the system call.
 155  */
 156 struct mmf {
 157         char    *mf_filename;   /* path name of file */
 158         long    mf_filesz;      /* Size in bytes of section of file */
 159                                 /* from which this region is mapped. */
 160         long    mf_regsz;       /* Size of region in bytes */
 161         short   mf_flags;       /* Either 0 or RG_NOSHARE */
 162 };
 163
 164 /*
 165  *  The SI86PCHRGN subcommand of the sysi86() system call
 166  *  change the memory mapped image of a file.
 167  *  The request structure declared below is used to pass the values
 168  *  system call parameters.  A pointer to the structure is
 169  *  passed as the second argument of the system call.
 170  */
 171 struct cmf {
 172         char    *cf_srcva;      /* modified image address */
 173         char    *cf_dstva;      /* location to patch */
 174         long    cf_count;       /* size of patch */
 175 };
 176
 177 /*
 178  * The SI86BADVISE subcommand of the sysi86() system call specifies
 179  * XENIX variant behavior for certain system calls and kernel routines.
 180  * The 'arg' argument of sysi86() for SI86BADVISE is an integer.  Bits
 181  * 8..15 specify SI86B_SET or SI86B_GET.  Bits 0..7 contain
 182  * SI86B_PRE_SV, SI86B_XOUT, or SI86B_XSDSWTCH.  All these constants are
 183  * defined below.  The 'arg' argument thus consists of either SI86B_SET
 184  * OR'ed with zero or more of SI86B_PRE_SV, SI86B_XOUT, and SI86B_XSDSWTCH,
 185  * or of SI86B_GET.
 186  */
 187 #define SI86B_SET               0x0100  /* set badvise bits */
 188 #define SI86B_GET               0x0200  /* retrieve badvise bits */
 189
 190 #define SI86B_PRE_SV            0x0008  /* follow pre-System V x.out behavior */
 191 #define SI86B_XOUT              0x0010  /* follow XENIX x.out behavior */
 192 #define SI86B_XSDSWTCH          0x0080  /* XENIX small model shared data */
 193                                         /*      context switching enabled */
 194
 195 /*
 196  *   The request structure declared below is used by the XENIX 286 emulator
 197  *   (/bin/x286emul) in conjunction with the SI86SHRGN subcommand of sysi86().
 198  *   The SI86SHRGN subcommand is used by the XENIX 286 emulator to support
 199  *   XENIX shared data.  The second argument passed to sysi86() is a
 200  *   pointer to an xsdbuf struct.
 201  *
 202  *   If the 'xsd_cmd' field of xsdbuf is SI86SHR_CP, the XENIX 286 emulator is
 203  *   using the SI86SHRGN subcommand to set up XENIX small model shared data
 204  *   context switching support for a given XENIX shared data segment.  In this
 205  *   case, the xsdbuf struct contains the start addr for the shared data in
 206  *   386 space, followed by the start addr for the shared data in the 286
 207  *   executable's private data.
 208  *
 209  *   If the 'xsd_cmd' field is SI86SHR_SZ, the XENIX 286 emulator is using the
 210  *   SI86SHRGN subcommand to retrieve the size of an existing XENIX shared
 211  *   data segment.  In this case, the xsdbuf struct contains the start addr
 212  *   for the shared data in 386 space.
 213  *   The size of the shared data segment starting at 'xsd_386vaddr' will
 214  *   be returned in the 'xsd_size' field by sysi86().
 215  */
 216
 217 #define SI86SHR_CP      0x1     /* SI86SHRGN used for XENIX sd context switch */
 218 #define SI86SHR_SZ      0x2     /* SI86SHRGN used to get XENIX sd seg size */
 219
 220 struct xsdbuf {
 221         unsigned xsd_cmd;       /* SI86SHRGN subcommand, either SI86SHR_CP */
 222                                 /* or SI86SHR_SZ. */
 223         char    *xsd_386vaddr;  /* Addr of "real" XENIX shared data seg in */
 224                                 /* the emulator. */
 225         union {
 226                 char    *xsd_286vaddr;  /* Addr of XENIX shared data seg */
 227                                         /* in the 286 data portion of the */
 228                                         /* emulator. */
 229                 unsigned long xsd_size; /* Size of XENIX shared data seg */
 230         } xsd_un;
 231 };
 232 /* End XENIX Support */
 233
 234 /*
 235  * Cascade defines
 236  */
 237
 238 #define C2      'E'
 239 #define C3      'F'
 240 #define C4      'G'
 241 #define C6      'K'
 242
 243 /* Enterprise IDNO defines */
 244 #define E8R1    'R'
 245
 246 #ifndef _KERNEL
 247 #ifdef __STDC__
 248 extern  int     sysi86(int, ...);
 249 #else
 250 extern  int     sysi86();
 251 #endif  /* __STDC__ */
 252 #endif  /* !_KERNEL */
 253
 254 #ifdef  __cplusplus
 255 }
 256 #endif
 257
 258 #endif  /* _SYS_SYSI86_H */