mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 18:21:39 +01:00
Keir Fraser
ca28885fa7
allocate_ondemand can be used to allocate addresse space. Primarily used for mapping MFNs, it can also be used e.g. to map grant refs. Signed-off-by: Samuel Thibault <samuel.thibault@eu.citrix.com>
82 lines
2.8 KiB
C
82 lines
2.8 KiB
C
/* -*- Mode:C; c-basic-offset:4; tab-width:4 -*-
|
|
*
|
|
* (C) 2003 - Rolf Neugebauer - Intel Research Cambridge
|
|
* Copyright (c) 2005, Keir A Fraser
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to
|
|
* deal in the Software without restriction, including without limitation the
|
|
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
* sell copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef _MM_H_
|
|
#define _MM_H_
|
|
|
|
#if defined(__i386__)
|
|
#include <xen/arch-x86_32.h>
|
|
#elif defined(__x86_64__)
|
|
#include <xen/arch-x86_64.h>
|
|
#elif defined(__ia64__)
|
|
#include <xen/arch-ia64.h>
|
|
#else
|
|
#error "Unsupported architecture"
|
|
#endif
|
|
|
|
#include <mini-os/lib.h>
|
|
|
|
#include <mini-os/arch_limits.h>
|
|
#include <mini-os/arch_mm.h>
|
|
|
|
#define STACK_SIZE_PAGE_ORDER __STACK_SIZE_PAGE_ORDER
|
|
#define STACK_SIZE __STACK_SIZE
|
|
|
|
|
|
void init_mm(void);
|
|
unsigned long alloc_pages(int order);
|
|
#define alloc_page() alloc_pages(0)
|
|
void free_pages(void *pointer, int order);
|
|
#define free_page(p) free_pages(p, 0)
|
|
|
|
static __inline__ int get_order(unsigned long size)
|
|
{
|
|
int order;
|
|
size = (size-1) >> PAGE_SHIFT;
|
|
for ( order = 0; size; order++ )
|
|
size >>= 1;
|
|
return order;
|
|
}
|
|
|
|
void arch_init_demand_mapping_area(unsigned long max_pfn);
|
|
void arch_init_mm(unsigned long* start_pfn_p, unsigned long* max_pfn_p);
|
|
void arch_init_p2m(unsigned long max_pfn_p);
|
|
|
|
unsigned long allocate_ondemand(unsigned long n, unsigned long alignment);
|
|
/* map f[i*stride]+i*increment for i in 0..n-1, aligned on alignment pages */
|
|
void *map_frames_ex(unsigned long *f, unsigned long n, unsigned long stride,
|
|
unsigned long increment, unsigned long alignment, domid_t id,
|
|
int may_fail, unsigned long prot);
|
|
void do_map_frames(unsigned long addr,
|
|
unsigned long *f, unsigned long n, unsigned long stride,
|
|
unsigned long increment, domid_t id, int may_fail, unsigned long prot);
|
|
#ifdef HAVE_LIBC
|
|
extern unsigned long heap, brk, heap_mapped, heap_end;
|
|
#endif
|
|
|
|
int free_physical_pages(xen_pfn_t *mfns, int n);
|
|
void fini_mm(void);
|
|
|
|
#endif /* _MM_H_ */
|