kopia lustrzana https://gitlab.com/sane-project/backends
361 wiersze
11 KiB
C
361 wiersze
11 KiB
C
/* @file plustek-pp_sysdep.h
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* @brief a trial to centralize changes between the different
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* kernel-versions some stuff is maybe not relevant, but anyway...
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*
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* Copyright (C) 2000-2013 Gerhard Jaeger <gerhard@gjaeger.de>
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*
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* History:
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* 0.30 - initial version
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* 0.38 - added this header
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* 0.39 - added kernel 2.4 stuff
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* 0.40 - added slab.h/malloc.h stuff for kernel >= 2.4.17
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* 0.41 - no changes
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* 0.42 - added _GET_TIME
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* - added LINUX_26 for new kernel
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* - added _MINOR
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* 0.43 - added class functions
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* 0.44 - added support for kernel >= 2.6.35 and 3.x
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* .
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* <hr>
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* This file is part of the SANE package.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*
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* As a special exception, the authors of SANE give permission for
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* additional uses of the libraries contained in this release of SANE.
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*
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* The exception is that, if you link a SANE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public
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* License. Your use of that executable is in no way restricted on
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* account of linking the SANE library code into it.
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*
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* This exception does not, however, invalidate any other reasons why
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* the executable file might be covered by the GNU General Public
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* License.
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*
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* If you submit changes to SANE to the maintainers to be included in
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* a subsequent release, you agree by submitting the changes that
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* those changes may be distributed with this exception intact.
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*
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* If you write modifications of your own for SANE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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* <hr>
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*/
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#ifndef _SYSDEP_H_
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#define _SYSDEP_H_
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#ifndef LINUX_VERSION_CODE
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# include <linux/version.h>
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#endif
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#ifndef VERSION_CODE
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# define VERSION_CODE(vers,rel,seq) ( ((vers)<<16) | ((rel)<<8) | (seq) )
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#endif
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/* only allow > 2.0.x */
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#if LINUX_VERSION_CODE < VERSION_CODE(2,0,0)
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# error "This kernel is too old: not supported by this file"
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#endif
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,0)
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# define LINUX_20
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#elif LINUX_VERSION_CODE < VERSION_CODE(2,4,0)
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# define LINUX_21
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#elif LINUX_VERSION_CODE < VERSION_CODE(2,6,0)
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# define LINUX_24
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#else
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# define LINUX_24
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# define LINUX_26
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# include <linux/device.h>
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# if LINUX_VERSION_CODE > VERSION_CODE(2,6,35)
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# define NOLOCK_IOCTL
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# define IOCTL unlocked_ioctl
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# else
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# define IOCTL ioctl
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# endif
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# if LINUX_VERSION_CODE > VERSION_CODE(3,0,0)
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# include <linux/sched.h>
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# endif
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#endif
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#include <linux/types.h> /* used later in this header */
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/* Modularization issues */
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,18)
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# define __USE_OLD_SYMTAB__
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# define EXPORT_NO_SYMBOLS register_symtab(NULL);
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# define REGISTER_SYMTAB(tab) register_symtab(tab)
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#else
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# define REGISTER_SYMTAB(tab) /* nothing */
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#endif
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#ifdef __USE_OLD_SYMTAB__
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# define __MODULE_STRING(s) /* nothing */
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# define MODULE_PARM(v,t) /* nothing */
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# define MODULE_PARM_DESC(v,t) /* nothing */
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# define MODULE_AUTHOR(n) /* nothing */
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# define MODULE_DESCRIPTION(d) /* nothing */
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# define MODULE_SUPPORTED_DEVICE(n) /* nothing */
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#endif
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,31)
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# define CLOSETYPE void
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# define CLOSERETURN(arg)
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#else
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# define CLOSETYPE int
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# define CLOSERETURN(arg) return arg
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#endif
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/*
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* "select" changed in 2.1.23. The implementation is twin, but this
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* header is new
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*/
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#if LINUX_VERSION_CODE > VERSION_CODE(2,1,22)
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# include <linux/poll.h>
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#else
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# define __USE_OLD_SELECT__
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#endif
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/* Other change in the fops are solved using pseudo-types */
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#if defined(LINUX_21) || defined(LINUX_24) || defined(LINUX_26)
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# define lseek_t long long
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# define lseek_off_t long long
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#else
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# define lseek_t int
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# define lseek_off_t off_t
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#endif
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/* changed the prototype of read/write */
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#if defined(LINUX_21) || defined (LINUX_24) || defined(LINUX_26) || defined(__alpha__)
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# define count_t unsigned long
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# define read_write_t long
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#else
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# define count_t int
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# define read_write_t int
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#endif
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,31)
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# define release_t void
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# define release_return(x) return
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#else
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# define release_t int
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# define release_return(x) return (x)
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#endif
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/*
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* access to user space: use the 2.1 functions,
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* and implement them as macros for 2.0
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*/
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#ifdef LINUX_20
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# include <asm/segment.h>
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# define access_ok(t,a,sz) (verify_area((t),(a),(sz)) ? 0 : 1)
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# define verify_area_20 verify_area
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# define copy_to_user(t,f,n) (memcpy_tofs(t,f,n), 0)
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# define __copy_to_user(t,f,n) copy_to_user((t),(f),(n))
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# define copy_to_user_ret(t,f,n,r) copy_to_user((t),(f),(n))
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# define copy_from_user(t,f,n) (memcpy_fromfs((t),(f),(n)), 0)
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# define __copy_from_user(t,f,n) copy_from_user((t),(f),(n))
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# define copy_from_user_ret(t,f,n,r) copy_from_user((t),(f),(n))
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# define PUT_USER(val,add) (put_user((val),(add)), 0)
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# define __PUT_USER(val,add) PUT_USER((val),(add))
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# define PUT_USER_RET(val,add,ret) PUT_USER((val),(add))
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# define GET_USER(dest,add) ((dest)=get_user((add)), 0)
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# define __GET_USER(dest,add) GET_USER((dest),(add))
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# define GET_USER_RET(dest,add,ret) GET_USER((dest),(add))
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#else
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# include <asm/uaccess.h>
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# include <asm/io.h>
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# define verify_area_20(t,a,sz) (0) /* == success */
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# define PUT_USER put_user
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# define __PUT_USER __put_user
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# define PUT_USER_RET put_user_ret
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# define GET_USER get_user
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# define __GET_USER __get_user
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# define GET_USER_RET get_user_ret
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/* starting with 2.4.0-test8, they removed the put_user_ret and get_user_ret
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* macros, so we recode'em
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*/
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#if defined(LINUX_24) || defined(LINUX_26)
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#ifndef put_user_ret
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# define put_user_ret(x,ptr,ret) ({ if (put_user(x,ptr)) return ret; })
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#endif
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#ifndef get_user_ret
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# define get_user_ret(x,ptr,ret) ({ if (get_user(x,ptr)) return ret; })
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#endif
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#endif
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#endif
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/* ioremap */
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#ifdef LINUX_20
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# define ioremap vremap
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# define iounmap vfree
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#endif
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/* The use_count of exec_domain and binfmt changed in 2.1.23 */
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#ifdef LINUX_20
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# define INCRCOUNT(p) ((p)->module ? __MOD_INC_USE_COUNT((p)->module) : 0)
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# define CURRCOUNT(p) ((p)->module && (p)->module->usecount)
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# define DECRCOUNT(p) ((p)->module ? __MOD_DEC_USE_COUNT((p)->module) : 0)
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#else
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# define INCRCOUNT(p) ((p)->use_count++)
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# define CURRCOUNT(p) ((p)->use_count)
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# define DECRCOUNT(p) ((p)->use_count--)
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#endif
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/* register_dynamic no more existent -- just have 0 as inum */
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#if LINUX_VERSION_CODE >= VERSION_CODE(2,1,29)
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# define proc_register_dynamic proc_register
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#endif
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,37)
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# define test_and_set_bit(nr,addr) test_bit((nr),(addr))
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# define test_and_clear_bit(nr,addr) clear_bit((nr),(addr))
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# define test_and_change_bit(nr,addr) change_bit((nr),(addr))
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#endif
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/* 2.1.30 removed these functions. Let's define them, just in case */
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#if LINUX_VERSION_CODE > VERSION_CODE(2,1,29)
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# define queue_task_irq queue_task
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# define queue_task_irq_off queue_task
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#endif
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/* 2.1.10 and 2.1.43 introduced new functions. They are worth using */
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,10)
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# include <asm/byteorder.h>
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# ifdef __LITTLE_ENDIAN
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# define cpu_to_le16(x) (x)
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# define cpu_to_le32(x) (x)
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# define cpu_to_be16(x) htons((x))
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# define cpu_to_be32(x) htonl((x))
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# else
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# define cpu_to_be16(x) (x)
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# define cpu_to_be32(x) (x)
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extern inline __u16 cpu_to_le16(__u16 x) { return (x<<8) | (x>>8);}
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extern inline __u32 cpu_to_le32(__u32 x) { return((x>>24) |
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((x>>8)&0xff00) | ((x<<8)&0xff0000) | (x<<24));}
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# endif
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# define le16_to_cpu(x) cpu_to_le16(x)
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# define le32_to_cpu(x) cpu_to_le32(x)
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# define be16_to_cpu(x) cpu_to_be16(x)
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# define be32_to_cpu(x) cpu_to_be32(x)
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#endif
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,43)
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# define cpu_to_le16p(addr) (cpu_to_le16(*(addr)))
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# define cpu_to_le32p(addr) (cpu_to_le32(*(addr)))
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# define cpu_to_be16p(addr) (cpu_to_be16(*(addr)))
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# define cpu_to_be32p(addr) (cpu_to_be32(*(addr)))
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extern inline void cpu_to_le16s(__u16 *a) {*a = cpu_to_le16(*a);}
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extern inline void cpu_to_le32s(__u16 *a) {*a = cpu_to_le32(*a);}
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extern inline void cpu_to_be16s(__u16 *a) {*a = cpu_to_be16(*a);}
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extern inline void cpu_to_be32s(__u16 *a) {*a = cpu_to_be32(*a);}
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# define le16_to_cpup(x) cpu_to_le16p(x)
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# define le32_to_cpup(x) cpu_to_le32p(x)
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# define be16_to_cpup(x) cpu_to_be16p(x)
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# define be32_to_cpup(x) cpu_to_be32p(x)
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# define le16_to_cpus(x) cpu_to_le16s(x)
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# define le32_to_cpus(x) cpu_to_le32s(x)
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# define be16_to_cpus(x) cpu_to_be16s(x)
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# define be32_to_cpus(x) cpu_to_be32s(x)
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#endif
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,15)
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# define __USE_OLD_REBUILD_HEADER__
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#endif
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#if LINUX_VERSION_CODE < VERSION_CODE(2,1,30)
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# define in_interrupt() (intr_count!=0)
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#endif
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/*
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* from 2.4.17 on, they decided to use slab.h instead of malloc.h... so what...
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* somewhere from 2.4.18-pre9 they skipped get_fast_time...
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*/
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#if LINUX_VERSION_CODE < VERSION_CODE(2,4,17)
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# include "linux/malloc.h"
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# define _GET_TIME get_fast_time
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#else
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# include "linux/slab.h"
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# define _GET_TIME do_gettimeofday
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#endif
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#ifdef LINUX_26
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# define _MINOR(p) iminor(p)
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#else
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# define _MINOR(p) minor(p->i_rdev)
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#endif
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/* Basic class macros */
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#ifdef LINUX_26
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#if LINUX_VERSION_CODE >= VERSION_CODE(2,6,15)
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typedef struct class class_t;
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
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#define CLASS_DEV_CREATE(class, devt, device, name) \
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device_create(class, device, devt, NULL, "%s", name)
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#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
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#define CLASS_DEV_CREATE(class, devt, device, name) \
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device_create(class, device, devt, name)
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#else
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#define CLASS_DEV_CREATE(class, devt, device, name) \
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class_device_create(class, NULL, devt, device, name)
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#endif
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
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#define CLASS_DEV_DESTROY device_destroy
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#else
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#define CLASS_DEV_DESTROY class_device_destroy
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#endif
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#else /* LINUX 2.6.0 - 2.6.14 */
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#if LINUX_VERSION_CODE >= VERSION_CODE(2,6,13) /* LINUX 2.6.13 - 2.6.14 */
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typedef struct class class_t;
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#define CLASS_DEVICE_CREATE class_device_create
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#define CLASS_DEV_DESTROY(class, devt) class_device_destroy(class, devt)
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#else /* LINUX 2.6.0 - 2.6.12, class_simple */
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typedef struct class_simple class_t;
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#define CLASS_DEVICE_CREATE class_simple_device_add
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#define CLASS_DEV_DESTROY(class, devt) class_simple_device_remove(class, devt)
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#define class_create class_simple_create
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#define class_destroy class_simple_destroy
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#define class_device_destroy(a, b) class_simple_device_remove(b)
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#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,13) */
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#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,15) */
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#endif
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#endif /* _SYSDEP_H_ */
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/* END PLUSTEK-PP_SYSDEP.H ..................................................*/
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