5171d409a5
This now provides slightly more functionality than the FreeBSD layer1-newbus interface. It was meant to be a simple change to one header and a few c files, but the change rippled all through various stuff. To prevent a change to the kernel<->userland interface right now the kernel is now lying about card types to userland (but who cares). This will be fixed when the userland interface changes, after layer 3 <-> layer 4 has been fixed. Functional changes: Provide a clean interface for hardware drivers to attach to the upper layers. This will need another small change in the B-channel handling when a similar change to the layer 3 <-> layer 4 interface happens. Avoid passing indices into global arrays of pointers around, instead pass the pointers itself. Don't code hardware driver types by predefined magic numbers (think LKM). Prepare for detachable drivers (think pcmcia). While there remove some sets of function pointers always pointing to the same function (meant to be the configurable set of D channel protocol handlers). It is unlikely another supported D-channel protocol will fit into that (maximal layer interface) abstraction. When we get support for another protocol, we will need to come up with a workable interface. Besides, the old implementation was, uhm, strange.
142 lines
4.8 KiB
C
142 lines
4.8 KiB
C
/*
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* Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b_global.h - i4b global include file
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* --------------------------------------
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*
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* $Id: i4b_global.h,v 1.3 2001/03/24 12:40:31 martin Exp $
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*
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* $FreeBSD$
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*
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* last edit-date: [Thu Aug 24 12:38:50 2000]
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*
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*---------------------------------------------------------------------------*/
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#ifndef _I4B_GLOBAL_H_
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#define _I4B_GLOBAL_H_
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/*---------------------------------------------------------------------------*
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* hiding OS differences in the kernel
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*---------------------------------------------------------------------------*/
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/*---------------*/
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/* time handling */
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/*---------------*/
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#ifdef __FreeBSD__
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#include <sys/param.h>
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#if defined(__FreeBSD_version) && __FreeBSD_version >= 400000 && __FreeBSD_version < 400011
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#error "Unsupported FreeBSD-current version,"
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#error "you need a FreeBSD-current >= 400011"
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#endif
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#if defined(__FreeBSD_version) && __FreeBSD_version >= 300001
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#define TIMEOUT_FUNC_T timeout_t *
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#define SECOND time_second
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#define MICROTIME(x) getmicrotime(&(x))
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#else /* FreeBSD < 3 */
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#define TIMEOUT_FUNC_T timeout_func_t
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#define SECOND time.tv_sec
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#define MICROTIME(x) microtime(&(x))
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#endif /* >= 3 */
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#endif /* __FreeBSD__ */
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#if defined(__NetBSD__) || defined (__OpenBSD__) || defined(__bsdi__)
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#define TIMEOUT_FUNC_T void *
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#define SECOND time.tv_sec
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#define MICROTIME(x) microtime(&(x))
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#endif /* __NetBSD__ */
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/*----------------*/
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/* timer handling */
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/*----------------*/
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#if defined(__NetBSD__)
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#if __NetBSD_Version__ >= 104230000
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#define START_TIMER(XHANDLE, XF, XSC, XTIME) callout_reset(&XHANDLE, XTIME, (TIMEOUT_FUNC_T)XF, (void*)XSC)
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#define STOP_TIMER(XHANDLE, XF, XSC) callout_stop(&XHANDLE)
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#else
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#define START_TIMER(XHANDLE, XF, XSC, XTIME) timeout((TIMEOUT_FUNC_T)XF, (void*)XSC, XTIME)
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#define STOP_TIMER(XHANDLE, XF, XSC) untimeout((TIMEOUT_FUNC_T)XF, (void*)XSC)
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#endif
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#else
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#define START_TIMER(XHANDLE, XF, XSC, XTIME) XHANDLE = timeout((TIMEOUT_FUNC_T)XF, (void*)XSC, XTIME)
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#ifdef __FreeBSD__
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#define STOP_TIMER(XHANDLE, XF, XSC) untimeout((TIMEOUT_FUNC_T)XF, (void*)XSC, XHANDLE)
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#else
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#define STOP_TIMER(XHANDLE, XF, XSC) untimeout((TIMEOUT_FUNC_T)XF, (void*)XSC)
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#endif
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#endif
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/*----------------------*/
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/* poll/select handling */
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/*----------------------*/
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#if (defined(__FreeBSD__) && \
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(!defined(__FreeBSD_version) || (__FreeBSD_version < 300001))) \
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|| defined (__OpenBSD__) || defined(__bsdi__)
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#define OS_USES_SELECT
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#else
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#define OS_USES_POLL
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#endif
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/*---------------------------------------------------------------------------*
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* misc globally used things in the kernel
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*---------------------------------------------------------------------------*/
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/* timer states */
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#define TIMER_IDLE 1 /* a timer is running */
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#define TIMER_ACTIVE 2 /* a timer is idle */
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/* definitions for the STATUS indications L1 -> L2 -> L3 */
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#define STI_ATTACH 0 /* attach at boot time */
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#define STI_L1STAT 1 /* layer 1 status */
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#define STI_L2STAT 2 /* layer 2 status */
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#define STI_TEIASG 3 /* TEI assignments */
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#define STI_PDEACT 4 /* Layer 1 T4 expired = persistent deactivation */
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#define STI_NOL1ACC 5 /* no outgoing L1 access possible */
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/* definitions for the COMMAND requests L3 -> L2 -> L1 */
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#define CMR_DOPEN 0 /* daemon opened /dev/i4b */
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#define CMR_DCLOSE 1 /* daemon closed /dev/i4b */
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#define CMR_SETTRACE 2 /* set D-channel and B-channel trace */
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#define CMR_GCST 3 /* get chipset statistics */
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#define CMR_CCST 4 /* clear chipset statistics */
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#endif /* _I4B_GLOBAL_H_ */
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