2 zr36120_mem.c - Zoran 36120/36125 based framegrabbers
4 Copyright (C) 1998-1999 Pauline Middelink <middelin@polyware.nl>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include <linux/config.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25 #include <linux/module.h>
27 #ifdef CONFIG_BIGPHYS_AREA
28 #include <linux/bigphysarea.h>
32 #include "zr36120_mem.h"
34 /*******************************/
35 /* Memory management functions */
36 /*******************************/
38 void* bmalloc(unsigned long size)
41 #ifdef CONFIG_BIGPHYS_AREA
42 mem = bigphysarea_alloc_pages(size/PAGE_SIZE, 1, GFP_KERNEL);
45 * The following function got a lot of memory at boottime,
46 * so we know its always there...
48 mem = (void*)__get_free_pages(GFP_USER|GFP_DMA,get_order(size));
51 unsigned long adr = (unsigned long)mem;
53 SetPageReserved(virt_to_page(phys_to_virt(adr)));
61 void bfree(void* mem, unsigned long size)
64 unsigned long adr = (unsigned long)mem;
65 unsigned long siz = size;
67 ClearPageReserved(virt_to_page(phys_to_virt(adr)));
71 #ifdef CONFIG_BIGPHYS_AREA
72 bigphysarea_free_pages(mem);
74 free_pages((unsigned long)mem,get_order(size));
79 MODULE_LICENSE("GPL");