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/*
* Copyright (c) 1996, 1998, 1999 University of Utah and the Flux Group.
* All rights reserved.
*
* This file is part of the Flux OSKit. The OSKit is free software, also known
* as "open source;" you can redistribute it and/or modify it under the terms
* of the GNU General Public License (GPL), version 2, as published by the Free
* Software Foundation (FSF). To explore alternate licensing terms, contact
* the University of Utah at csl-dist@cs.utah.edu or +1-801-585-3271.
*
* The OSKit is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GPL for more details. You should have
* received a copy of the GPL along with the OSKit; see the file COPYING. If
* not, write to the FSF, 59 Temple Place #330, Boston, MA 02111-1307, USA.
*/
/*
* Default implementation of memory routines.
*/
#include <oskit/c/malloc.h>
#include <oskit/c/stdlib.h>
#include <oskit/dev/dev.h>
#include <oskit/com/mem.h>
#include <oskit/com/services.h>
#include <oskit/machine/base_vm.h>
#include <oskit/machine/physmem.h>
#ifdef CPUNITS
extern oskit_mem_t *oskit_mem_object;
#define osenv_mem oskit_mem_object
#else
/*
* Stash a pointer to the memory object.
*/
static oskit_mem_t *osenv_mem;
#endif
/*
* Allocate memory.
*/
void *
osenv_mem_alloc(oskit_size_t size, osenv_memflags_t flags, unsigned align)
{
void *p;
#ifndef CPUNITS
if (osenv_mem == NULL) {
if (oskit_lookup_first(&oskit_mem_iid, (void **)&osenv_mem))
return NULL;
if (osenv_mem == NULL)
return NULL;
}
#endif
/*
* NOTE that osenv flags are the same as oskit_mem flags!
*/
if (align > 1) {
p = oskit_mem_alloc_aligned(osenv_mem, size, flags, align);
} else {
p = oskit_mem_alloc(osenv_mem, size, flags);
}
return p;
}
/*
* Free memory.
*/
void
osenv_mem_free(void *block, osenv_memflags_t flags, oskit_size_t size)
{
oskit_mem_free(osenv_mem, block, size, flags);
}
/*
* Map physical memory into kernel virtual space.
*/
int
osenv_mem_map_phys(oskit_addr_t pa, oskit_size_t size, void **addr,
int flags)
{
*addr = (void *)phystokv(pa);
return (0);
}
/*
* Return the amount of physical RAM in the machine
*/
oskit_addr_t
osenv_mem_phys_max(void)
{
/*
* XXX How can this possibly be useful? It makes no sense on
* any machine in which memory does not start at zero, or is
* not contiguous.
*/
return phys_mem_max;
}
/*
* Return the physical address
*/
oskit_addr_t
osenv_mem_get_phys(oskit_addr_t addr)
{
return ((oskit_addr_t)kvtophys(addr));
}
oskit_addr_t
osenv_mem_get_virt(oskit_addr_t addr)
{
return ((oskit_addr_t)phystokv(addr));
}
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