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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/wrapper.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) {

                        mem_map_reserve(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) {

                        mem_map_unreserve(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");