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/*
zr36120_mem.c - Zoran 36120/36125 based framegrabbers
Copyright (C) 1998-1999 Pauline Middelink <middelin@polyware.nl>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/config.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <asm/io.h>
#ifdef CONFIG_BIGPHYS_AREA
#include <linux/bigphysarea.h>
#endif
#include "zr36120.h"
#include "zr36120_mem.h"
/*******************************/
/* Memory management functions */
/*******************************/
void* bmalloc(unsigned long size)
{
void* mem;
#ifdef CONFIG_BIGPHYS_AREA
mem = bigphysarea_alloc_pages(size/PAGE_SIZE, 1, GFP_KERNEL);
#else
/*
* The following function got a lot of memory at boottime,
* so we know its always there...
*/
mem = (void*)__get_free_pages(GFP_USER|GFP_DMA,get_order(size));
#endif
if (mem) {
unsigned long adr = (unsigned long)mem;
while (size > 0) {
SetPageReserved(virt_to_page(phys_to_virt(adr)));
adr += PAGE_SIZE;
size -= PAGE_SIZE;
}
}
return mem;
}
void bfree(void* mem, unsigned long size)
{
if (mem) {
unsigned long adr = (unsigned long)mem;
unsigned long siz = size;
while (siz > 0) {
ClearPageReserved(virt_to_page(phys_to_virt(adr)));
adr += PAGE_SIZE;
siz -= PAGE_SIZE;
}
#ifdef CONFIG_BIGPHYS_AREA
bigphysarea_free_pages(mem);
#else
free_pages((unsigned long)mem,get_order(size));
#endif
}
}
MODULE_LICENSE("GPL");
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