sys/dev/raid/asr/osd_util.h

   1 /* $FreeBSD: src/sys/dev/asr/osd_util.h,v 1.1.2.2 2001/08/23 05:21:29 scottl Exp $ */
   2 /* $DragonFly: src/sys/dev/raid/asr/osd_util.h,v 1.6 2008/06/05 18:01:49 swildner Exp $ */
   3 /*
   4  * Copyright (c) 1996-1999 Distributed Processing Technology Corporation
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source form, with or without modification, are
   8  * permitted provided that redistributions of source code must retain the
   9  * above copyright notice, this list of conditions and the following disclaimer.
  10  *
  11  * This software is provided `as is' by Distributed Processing Technology and
  12  * any express or implied warranties, including, but not limited to, the
  13  * implied warranties of merchantability and fitness for a particular purpose,
  14  * are disclaimed. In no event shall Distributed Processing Technology be
  15  * liable for any direct, indirect, incidental, special, exemplary or
  16  * consequential damages (including, but not limited to, procurement of
  17  * substitute goods or services; loss of use, data, or profits; or business
  18  * interruptions) however caused and on any theory of liability, whether in
  19  * contract, strict liability, or tort (including negligence or otherwise)
  20  * arising in any way out of the use of this driver software, even if advised
  21  * of the possibility of such damage.
  22  *
  23  */
  24
  25 #ifndef         __OSD_UTIL_H
  26 #define         __OSD_UTIL_H
  27
  28 /*File - OSD_UTIL.H
  29  ****************************************************************************
  30  *
  31  *Description:
  32  *
  33  *      This file contains defines and function prototypes that are
  34  *operating system dependent.  The resources defined in this file
  35  *are not specific to any particular application.
  36  *
  37  *Copyright Distributed Processing Technology, Corp.
  38  *        140 Candace Dr.
  39  *        Maitland, Fl. 32751   USA
  40  *        Phone: (407) 830-5522  Fax: (407) 260-5366
  41  *        All Rights Reserved
  42  *
  43  *Author:       Doug Anderson
  44  *Date:         1/7/94
  45  *
  46  *Editors:
  47  *
  48  *Remarks:
  49  *
  50  *
  51  *****************************************************************************/
  52
  53
  54 /*Definitions - Defines & Constants ----------------------------------------- */
  55
  56 /*----------------------------- */
  57 /* Operating system selections: */
  58 /*----------------------------- */
  59
  60 /*#define               _DPT_MSDOS      */
  61 /*#define               _DPT_WIN_3X     */
  62 /*#define               _DPT_WIN_4X     */
  63 /*#define               _DPT_WIN_NT     */
  64 /*#define               _DPT_NETWARE    */
  65 /*#define               _DPT_OS2        */
  66 /*#define               _DPT_SCO        */
  67 /*#define               _DPT_UNIXWARE   */
  68 /*#define               _DPT_SOLARIS    */
  69 /*#define               _DPT_NEXTSTEP   */
  70 /*#define               _DPT_BANYAN     */
  71
  72 /*-------------------------------- */
  73 /* Include the OS specific defines */
  74 /*-------------------------------- */
  75
  76 /*#define       OS_SELECTION    From Above List */
  77 /*#define       SEMAPHORE_T     ??? */
  78 /*#define       DLL_HANDLE_T    ??? */
  79
  80 #if (defined(KERNEL) && defined(__bsdi__))
  81 # include        "i386/isa/dpt_osd_defs.h"
  82 #elif ((defined(KERNEL) || defined(_KERNEL)) && defined(__DragonFly__))
  83 # if (KERN_VERSION < 3)
  84 #  include        "i386/isa/dpt_osd_defs.h"
  85 # else
  86 #  include "osd_defs.h"
  87 # endif
  88 #else
  89 # include        "osd_defs.h"
  90 #endif
  91
  92 #ifndef DPT_UNALIGNED
  93    #define      DPT_UNALIGNED
  94 #endif
  95
  96 #ifndef DPT_EXPORT
  97    #define      DPT_EXPORT
  98 #endif
  99
 100 #ifndef DPT_IMPORT
 101    #define      DPT_IMPORT
 102 #endif
 103
 104 #ifndef DPT_RUNTIME_IMPORT
 105    #define      DPT_RUNTIME_IMPORT  DPT_IMPORT
 106 #endif
 107
 108 /*--------------------- */
 109 /* OS dependent defines */
 110 /*--------------------- */
 111
 112 #if defined (_DPT_MSDOS) || defined (_DPT_WIN_3X)
 113    #define      _DPT_16_BIT
 114 #else
 115    #define      _DPT_32_BIT
 116 #endif
 117
 118 #if defined (_DPT_SCO) || defined (_DPT_UNIXWARE) || defined (_DPT_SOLARIS) || defined (_DPT_AIX) || defined (SNI_MIPS) || defined (_DPT_BSDI) || defined (_DPT_FREE_BSD) || defined(_DPT_LINUX)
 119    #define      _DPT_UNIX
 120 #endif
 121
 122 #if defined (_DPT_WIN_3x) || defined (_DPT_WIN_4X) || defined (_DPT_WIN_NT) \
 123             || defined (_DPT_OS2)
 124    #define      _DPT_DLL_SUPPORT
 125 #endif
 126
 127 #if !defined (_DPT_MSDOS) && !defined (_DPT_WIN_3X) && !defined (_DPT_NETWARE)
 128    #define      _DPT_PREEMPTIVE
 129 #endif
 130
 131 #if !defined (_DPT_MSDOS) && !defined (_DPT_WIN_3X)
 132    #define      _DPT_MULTI_THREADED
 133 #endif
 134
 135 #if !defined (_DPT_MSDOS)
 136    #define      _DPT_MULTI_TASKING
 137 #endif
 138
 139   /* These exist for platforms that   */
 140   /* chunk when accessing mis-aligned */
 141   /* data                             */
 142 #if defined (SNI_MIPS) || defined (_DPT_SOLARIS)
 143    #if defined (_DPT_BIG_ENDIAN)
 144         #if !defined (_DPT_STRICT_ALIGN)
 145             #define _DPT_STRICT_ALIGN
 146         #endif
 147    #endif
 148 #endif
 149
 150   /* Determine if in C or C++ mode */
 151 #ifdef  __cplusplus
 152    #define      _DPT_CPP
 153 #else
 154    #define      _DPT_C
 155 #endif
 156
 157 /*-------------------------------------------------------------------*/
 158 /* Under Solaris the compiler refuses to accept code like:           */
 159 /*   { {"DPT"}, 0, NULL .... },                                      */
 160 /* and complains about the {"DPT"} part by saying "cannot use { }    */
 161 /* to initialize char*".                                             */
 162 /*                                                                   */
 163 /* By defining these ugly macros we can get around this and also     */
 164 /* not have to copy and #ifdef large sections of code.  I know that  */
 165 /* these macros are *really* ugly, but they should help reduce       */
 166 /* maintenance in the long run.                                      */
 167 /*                                                                   */
 168 /* In the meantime, just pray that we can all move to Win32 as soon  */
 169 /* as possible...                                                    */
 170 /*-------------------------------------------------------------------*/
 171 #if !defined (DPTSQO)
 172    #if defined (_DPT_SOLARIS)
 173       #define DPTSQO
 174       #define DPTSQC
 175    #else
 176       #define DPTSQO {
 177       #define DPTSQC }
 178    #endif  /* solaris */
 179 #endif  /* DPTSQO */
 180
 181
 182 /*---------------------- */
 183 /* OS dependent typedefs */
 184 /*---------------------- */
 185
 186 #if defined (_DPT_MSDOS) || defined (_DPT_SCO)
 187    #define BYTE unsigned char
 188    #define WORD unsigned short
 189 #endif
 190
 191 #ifndef _DPT_TYPEDEFS
 192    #define _DPT_TYPEDEFS
 193    typedef unsigned char   uCHAR;
 194    typedef unsigned short  uSHORT;
 195    typedef unsigned int    uINT;
 196    typedef unsigned long   uLONG;
 197
 198    typedef union {
 199          uCHAR        u8[4];
 200          uSHORT       u16[2];
 201          uLONG        u32;
 202    } access_U;
 203 #endif
 204
 205
 206 /*Prototypes - function ----------------------------------------------------- */
 207
 208 #ifdef  __cplusplus
 209    extern "C" {         /* Declare all these functions as "C" functions */
 210 #endif
 211
 212 /*------------------------ */
 213 /* Byte reversal functions */
 214 /*------------------------ */
 215
 216   /* Reverses the byte ordering of a 2 byte variable */
 217 #if (!defined(osdSwap2))
 218  uSHORT       osdSwap2(DPT_UNALIGNED uSHORT *);
 219 #endif  /* !osdSwap2 */
 220
 221   /* Reverses the byte ordering of a 4 byte variable and shifts left 8 bits */
 222 #if (!defined(osdSwap3))
 223  uLONG        osdSwap3(DPT_UNALIGNED uLONG *);
 224 #endif  /* !osdSwap3 */
 225
 226
 227 #ifdef  _DPT_NETWARE
 228    #include "novpass.h" /* For DPT_Bswapl() prototype */
 229         /* Inline the byte swap */
 230    #ifdef __cplusplus
 231          inline uLONG osdSwap4(uLONG *inLong) {
 232          return *inLong = DPT_Bswapl(*inLong);
 233          }
 234    #else
 235          #define osdSwap4(inLong)       DPT_Bswapl(inLong)
 236    #endif  /* cplusplus */
 237 #else
 238         /* Reverses the byte ordering of a 4 byte variable */
 239 # if (!defined(osdSwap4))
 240    uLONG        osdSwap4(DPT_UNALIGNED uLONG *);
 241 # endif  /* !osdSwap4 */
 242
 243   /* The following functions ALWAYS swap regardless of the *
 244    * presence of DPT_BIG_ENDIAN                            */
 245
 246    uSHORT       trueSwap2(DPT_UNALIGNED uSHORT *);
 247    uLONG        trueSwap4(DPT_UNALIGNED uLONG *);
 248
 249 #endif  /* netware */
 250
 251
 252 /*-------------------------------------*
 253  * Network order swap functions        *
 254  *                                     *
 255  * These functions/macros will be used *
 256  * by the structure insert()/extract() *
 257  * functions.                          *
 258  *
 259  * We will enclose all structure       *
 260  * portability modifications inside    *
 261  * #ifdefs.  When we are ready, we     *
 262  * will #define DPT_PORTABLE to begin  *
 263  * using the modifications.            *
 264  *-------------------------------------*/
 265 uLONG   netSwap4(uLONG val);
 266
 267 #if defined (_DPT_BIG_ENDIAN)
 268
 269 // for big-endian we need to swap
 270
 271 #ifndef NET_SWAP_2
 272 #define NET_SWAP_2(x) (((x) >> 8) | ((x) << 8))
 273 #endif
 274
 275 #ifndef NET_SWAP_4
 276 #define NET_SWAP_4(x) netSwap4((x))
 277 #endif
 278
 279 #else
 280
 281 /* for little-endian we don't need to do anything */
 282
 283 #ifndef NET_SWAP_2
 284 #define NET_SWAP_2(x) (x)
 285 #endif
 286
 287 #ifndef NET_SWAP_4
 288 #define NET_SWAP_4(x) (x)
 289 #endif
 290
 291 #endif  /* big endian */
 292
 293
 294
 295 /*----------------------------------- */
 296 /* Run-time loadable module functions */
 297 /*----------------------------------- */
 298
 299   /* Loads the specified run-time loadable DLL */
 300 DLL_HANDLE_T    osdLoadModule(uCHAR *);
 301   /* Unloads the specified run-time loadable DLL */
 302 uSHORT          osdUnloadModule(DLL_HANDLE_T);
 303   /* Returns a pointer to a function inside a run-time loadable DLL */
 304 void *          osdGetFnAddr(DLL_HANDLE_T,uCHAR *);
 305
 306 /*--------------------------------------- */
 307 /* Mutually exclusive semaphore functions */
 308 /*--------------------------------------- */
 309
 310   /* Create a named semaphore */
 311 SEMAPHORE_T     osdCreateNamedSemaphore(char *);
 312   /* Create a mutually exlusive semaphore */
 313 SEMAPHORE_T     osdCreateSemaphore(void);
 314         /* create an event semaphore */
 315 SEMAPHORE_T              osdCreateEventSemaphore(void);
 316         /* create a named event semaphore */
 317 SEMAPHORE_T             osdCreateNamedEventSemaphore(char *);
 318
 319   /* Destroy the specified mutually exclusive semaphore object */
 320 uSHORT          osdDestroySemaphore(SEMAPHORE_T);
 321   /* Request access to the specified mutually exclusive semaphore */
 322 uLONG           osdRequestSemaphore(SEMAPHORE_T,uLONG);
 323   /* Release access to the specified mutually exclusive semaphore */
 324 uSHORT          osdReleaseSemaphore(SEMAPHORE_T);
 325         /* wait for a event to happen */
 326 uLONG                            osdWaitForEventSemaphore(SEMAPHORE_T, uLONG);
 327         /* signal an event */
 328 uLONG                            osdSignalEventSemaphore(SEMAPHORE_T);
 329         /* reset the event */
 330 uLONG                            osdResetEventSemaphore(SEMAPHORE_T);
 331
 332 /*----------------- */
 333 /* Thread functions */
 334 /*----------------- */
 335
 336   /* Releases control to the task switcher in non-preemptive */
 337   /* multitasking operating systems. */
 338 void            osdSwitchThreads(void);
 339
 340   /* Starts a thread function */
 341 uLONG   osdStartThread(void *,void *);
 342
 343 /* what is my thread id */
 344 uLONG osdGetThreadID(void);
 345
 346 /* wakes up the specifed thread */
 347 void osdWakeThread(uLONG);
 348
 349 /* osd sleep for x miliseconds */
 350 void osdSleep(uLONG);
 351
 352 #define DPT_THREAD_PRIORITY_LOWEST 0x00
 353 #define DPT_THREAD_PRIORITY_NORMAL 0x01
 354 #define DPT_THREAD_PRIORITY_HIGHEST 0x02
 355
 356 uCHAR osdSetThreadPriority(uLONG tid, uCHAR priority);
 357
 358 #ifdef __cplusplus
 359    }    /* end the xtern "C" declaration */
 360 #endif
 361
 362 #endif  /* osd_util_h */