1/*	$NetBSD: gemini_dma.c,v 1.4 2022/09/27 06:36:41 skrll Exp $	*/
2
3/* adapted from:
4 *	NetBSD: pxa2x0_dma.c,v 1.4 2005/12/11 12:16:51 christos Exp
5 */
6
7/*
8 * Copyright (c) 2002  Genetec Corporation.  All rights reserved.
9 * Written by Hiroyuki Bessho for Genetec Corporation.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *	This product includes software developed for the NetBSD Project by
22 *	Genetec Corporation.
23 * 4. The name of Genetec Corporation may not be used to endorse or
24 *    promote products derived from this software without specific prior
25 *    written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL GENETEC CORPORATION
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40/*
41 * bus dma tag for PXA2[15]0 processor.
42 * (Currently used only for LCD frame buffer)
43 */
44
45#include <sys/cdefs.h>
46__KERNEL_RCSID(0, "$NetBSD: gemini_dma.c,v 1.4 2022/09/27 06:36:41 skrll Exp $");
47
48#include <sys/param.h>
49#include <sys/systm.h>
50#include <sys/device.h>
51#include <sys/mbuf.h>
52
53#include <uvm/uvm_extern.h>
54
55#define	_ARM32_BUS_DMA_PRIVATE
56#include <sys/bus.h>
57
58struct arm32_bus_dma_tag gemini_bus_dma_tag = {
59	_BUS_DMAMAP_FUNCS,
60	_BUS_DMAMEM_FUNCS,
61	_BUS_DMATAG_FUNCS,
62};
63
64