/*
* Copyright (C) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <ddi.h>
#include <libc.h>
#include <task.h>
#include <kernel/ddi/ddi_arg.h>
/** Map piece of physical memory to task.
*
* Caller of this function must have the CAP_MEM_MANAGER capability.
*
* @param id Task ID.
* @param pf Physical address of the starting frame.
* @param vp Virtual address of the sterting page.
* @param pages Number of pages to map.
* @param writable If true, the mapping will be created writable.
*
* @return 0 on success, EPERM if the caller lacks the CAP_MEM_MANAGER capability,
* ENOENT if there is no task with specified ID and ENOMEM if there
* was some problem in creating address space area.
*/
int map_physmem(task_id_t id, void *pf, void *vp, unsigned long pages, int writable)
{
task_id_t task_id;
ddi_arg_t arg;
arg.task_id = id;
arg.phys_base = pf;
arg.virt_base = vp;
arg.pages = pages;
arg.writable = writable;
return __SYSCALL1(SYS_MAP_PHYSMEM, (sysarg_t) &arg);
}