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/*
* Project: S.Ha.R.K.
*
* Coordinators:
* Giorgio Buttazzo <giorgio@sssup.it>
* Paolo Gai <pj@gandalf.sssup.it>
*
* Authors :
* Paolo Gai <pj@gandalf.sssup.it>
* Massimiliano Giorgi <massy@gandalf.sssup.it>
* Luca Abeni <luca@gandalf.sssup.it>
* (see the web pages for full authors list)
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*/
#ifndef __FS_MACCESS_H
#define __FS_MACCESS_H
/*+ if defined: the following functions are 'dummy' function +*/
#define DUMMY_MACCESS
//#undef DUMMY_MACCESS
#ifdef DUMMY_MACCESS
#include <fs/util.h>
#endif
/*
* port in/out
*/
#include <ll/i386/hw-instr.h>
/*
*
* address translation
*
*/
//#include <x86/xsys.h>
//#define __lin_to_phy(ptr) appl2linear(ptr)
//#define __phy_to_lin(addr) linear2appl(addr)
#define __lin_to_phy(ptr) ((int)ptr)
#define __phy_to_lin(addr) ((void*)addr)
/*
*
* verify read/write access to user space
*
*/
extern int verifyuserread(const void * addr, unsigned long size);
extern int verifyuserwrite(const void * addr, unsigned long size);
extern int verifyuserreadnolen(const void *addr);
#ifdef DUMMY_MACCESS
#define __verify_write(x,y) (-1)
#define __verify_read(x,y) (-1)
#define __verify_read_nolen(x) (1)
#else
#define __verify_write(x,y) verifyuserwrite(x,y)
#define __verify_read(x,y) verifyuserread(x,y)
#define __verify_read_nolen(x) verifyuserreadnolen(x)
#endif
/*
*
* copy data to/from user space
*
*/
#ifdef DUMMY_MACCESS
extern __inline__ void memcpytouser(void *to, void *from, int size)
{ memcpy(to,from,size); }
extern __inline__ void memcpyfromuser(void *to, void *from, int size)
{ memcpy(to,from,size); }
#define declare_buffer(type,name,maxlen) type *name
#define init_buffer(name) name=NULL
#define __copy_from_user(to,from,size) ((to)=(from))
#define __copy_to_user(to,from,size) memcpy(to,from,size)
#else
extern void memcpytouser(void *to, void *from, int size);
extern void memcpyfromuser(void *to, void *from, int size);
#define declare_buffer(type,name,maxlen) type name[maxlen]
#define init_buffer(name)
#define __copy_from_user(to,from,size) memcpyfromuser(to,from,size)
#define __copy_to_user(to,from,size) memcpytouser(to,from,size)
#endif
/*
*
* physical resource allocator
*
*/
extern int requestiospace(void *startaddr, int size);
extern int releaseiospace(void *startaddr, int size);
#ifdef DUMMY_MACCESS
#define __request_io_space(x,y) (-1)
#define __release_io_space(x,y)
#else
#define __request_io_space(x,y) requestiospace(x,y)
#define __release_io_space(x,y) releaseiospace(x,y)
#endif
#endif