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 1.2 2003/06/17 04:28:22 dillon Exp $ */
4 * Copyright (c) 1996-1999 Distributed Processing Technology Corporation
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.
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.
29 ****************************************************************************
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.
37 *Copyright Distributed Processing Technology, Corp.
39 * Maitland, Fl. 32751 USA
40 * Phone: (407) 830-5522 Fax: (407) 260-5366
43 *Author: Doug Anderson
51 *****************************************************************************/
54 /*Definitions - Defines & Constants ----------------------------------------- */
56 /*----------------------------- */
57 /* Operating system selections: */
58 /*----------------------------- */
60 /*#define _DPT_MSDOS */
61 /*#define _DPT_WIN_3X */
62 /*#define _DPT_WIN_4X */
63 /*#define _DPT_WIN_NT */
64 /*#define _DPT_NETWARE */
67 /*#define _DPT_UNIXWARE */
68 /*#define _DPT_SOLARIS */
69 /*#define _DPT_NEXTSTEP */
70 /*#define _DPT_BANYAN */
72 /*-------------------------------- */
73 /* Include the OS specific defines */
74 /*-------------------------------- */
76 /*#define OS_SELECTION From Above List */
77 /*#define SEMAPHORE_T ??? */
78 /*#define DLL_HANDLE_T ??? */
80 #if (defined(KERNEL) && defined(__bsdi__))
81 # include "i386/isa/dpt_osd_defs.h"
82 #elif ((defined(KERNEL) || defined(_KERNEL)) && defined(__FreeBSD__))
83 # if (KERN_VERSION < 3)
84 # include "i386/isa/dpt_osd_defs.h"
86 # include "dev/asr/osd_defs.h"
89 # include "osd_defs.h"
104 #ifndef DPT_RUNTIME_IMPORT
105 #define DPT_RUNTIME_IMPORT DPT_IMPORT
108 /*--------------------- */
109 /* OS dependent defines */
110 /*--------------------- */
112 #if defined (_DPT_MSDOS) || defined (_DPT_WIN_3X)
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)
122 #if defined (_DPT_WIN_3x) || defined (_DPT_WIN_4X) || defined (_DPT_WIN_NT) \
123 || defined (_DPT_OS2)
124 #define _DPT_DLL_SUPPORT
127 #if !defined (_DPT_MSDOS) && !defined (_DPT_WIN_3X) && !defined (_DPT_NETWARE)
128 #define _DPT_PREEMPTIVE
131 #if !defined (_DPT_MSDOS) && !defined (_DPT_WIN_3X)
132 #define _DPT_MULTI_THREADED
135 #if !defined (_DPT_MSDOS)
136 #define _DPT_MULTI_TASKING
139 /* These exist for platforms that */
140 /* chunk when accessing mis-aligned */
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
150 /* Determine if in C or C++ mode */
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*". */
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. */
168 /* In the meantime, just pray that we can all move to Win32 as soon */
170 /*-------------------------------------------------------------------*/
171 #if !defined (DPTSQO)
172 #if defined (_DPT_SOLARIS)
182 /*---------------------- */
183 /* OS dependent typedefs */
184 /*---------------------- */
186 #if defined (_DPT_MSDOS) || defined (_DPT_SCO)
187 #define BYTE unsigned char
188 #define WORD unsigned short
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;
210 /*Prototypes - function ----------------------------------------------------- */
213 extern "C" { /* Declare all these functions as "C" functions */
216 /*------------------------ */
217 /* Byte reversal functions */
218 /*------------------------ */
220 /* Reverses the byte ordering of a 2 byte variable */
221 #if (!defined(osdSwap2))
222 uSHORT osdSwap2(DPT_UNALIGNED uSHORT *);
225 /* Reverses the byte ordering of a 4 byte variable and shifts left 8 bits */
226 #if (!defined(osdSwap3))
227 uLONG osdSwap3(DPT_UNALIGNED uLONG *);
232 #include "novpass.h" /* For DPT_Bswapl() prototype */
233 /* Inline the byte swap */
235 inline uLONG osdSwap4(uLONG *inLong) {
236 return *inLong = DPT_Bswapl(*inLong);
239 #define osdSwap4(inLong) DPT_Bswapl(inLong)
242 /* Reverses the byte ordering of a 4 byte variable */
243 # if (!defined(osdSwap4))
244 uLONG osdSwap4(DPT_UNALIGNED uLONG *);
247 /* The following functions ALWAYS swap regardless of the *
248 * presence of DPT_BIG_ENDIAN */
250 uSHORT trueSwap2(DPT_UNALIGNED uSHORT *);
251 uLONG trueSwap4(DPT_UNALIGNED uLONG *);
256 /*-------------------------------------*
257 * Network order swap functions *
259 * These functions/macros will be used *
260 * by the structure insert()/extract() *
263 * We will enclose all structure *
264 * portability modifications inside *
265 * #ifdefs. When we are ready, we *
266 * will #define DPT_PORTABLE to begin *
267 * using the modifications. *
268 *-------------------------------------*/
269 uLONG netSwap4(uLONG val);
271 #if defined (_DPT_BIG_ENDIAN)
273 // for big-endian we need to swap
276 #define NET_SWAP_2(x) (((x) >> 8) | ((x) << 8))
280 #define NET_SWAP_4(x) netSwap4((x))
285 /* for little-endian we don't need to do anything */
288 #define NET_SWAP_2(x) (x)
292 #define NET_SWAP_4(x) (x)
299 /*----------------------------------- */
300 /* Run-time loadable module functions */
301 /*----------------------------------- */
303 /* Loads the specified run-time loadable DLL */
304 DLL_HANDLE_T osdLoadModule(uCHAR *);
305 /* Unloads the specified run-time loadable DLL */
306 uSHORT osdUnloadModule(DLL_HANDLE_T);
307 /* Returns a pointer to a function inside a run-time loadable DLL */
308 void * osdGetFnAddr(DLL_HANDLE_T,uCHAR *);
310 /*--------------------------------------- */
311 /* Mutually exclusive semaphore functions */
312 /*--------------------------------------- */
314 /* Create a named semaphore */
315 SEMAPHORE_T osdCreateNamedSemaphore(char *);
316 /* Create a mutually exlusive semaphore */
317 SEMAPHORE_T osdCreateSemaphore(void);
318 /* create an event semaphore */
319 SEMAPHORE_T osdCreateEventSemaphore(void);
320 /* create a named event semaphore */
321 SEMAPHORE_T osdCreateNamedEventSemaphore(char *);
323 /* Destroy the specified mutually exclusive semaphore object */
324 uSHORT osdDestroySemaphore(SEMAPHORE_T);
325 /* Request access to the specified mutually exclusive semaphore */
326 uLONG osdRequestSemaphore(SEMAPHORE_T,uLONG);
327 /* Release access to the specified mutually exclusive semaphore */
328 uSHORT osdReleaseSemaphore(SEMAPHORE_T);
329 /* wait for a event to happen */
330 uLONG osdWaitForEventSemaphore(SEMAPHORE_T, uLONG);
331 /* signal an event */
332 uLONG osdSignalEventSemaphore(SEMAPHORE_T);
333 /* reset the event */
334 uLONG osdResetEventSemaphore(SEMAPHORE_T);
336 /*----------------- */
337 /* Thread functions */
338 /*----------------- */
340 /* Releases control to the task switcher in non-preemptive */
341 /* multitasking operating systems. */
342 void osdSwitchThreads(void);
344 /* Starts a thread function */
345 uLONG osdStartThread(void *,void *);
347 /* what is my thread id */
348 uLONG osdGetThreadID(void);
350 /* wakes up the specifed thread */
351 void osdWakeThread(uLONG);
353 /* osd sleep for x miliseconds */
354 void osdSleep(uLONG);
356 #define DPT_THREAD_PRIORITY_LOWEST 0x00
357 #define DPT_THREAD_PRIORITY_NORMAL 0x01
358 #define DPT_THREAD_PRIORITY_HIGHEST 0x02
360 uCHAR osdSetThreadPriority(uLONG tid, uCHAR priority);
363 } /* end the xtern "C" declaration */
366 #endif /* osd_util_h */