0,0 → 1,60 |
/* |
* 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); |
} |