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1/* $OpenBSD: usb_mem.h,v 1.18 2024/10/08 19:42:31 kettenis Exp $ */
2/* $NetBSD: usb_mem.h,v 1.20 2003/05/03 18:11:42 wiz Exp $ */
3/* $FreeBSD: src/sys/dev/usb/usb_mem.h,v 1.9 1999/11/17 22:33:47 n_hibma Exp $ */
4
5/*
6 * Copyright (c) 1998 The NetBSD Foundation, Inc.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Lennart Augustsson (lennart@augustsson.net) at
11 * Carlstedt Research & Technology.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35struct usb_frag_dma;
36
37struct usb_dma_block {
38 bus_dma_tag_t tag;
39 bus_dmamap_t map;
40 caddr_t kaddr;
41 bus_dma_segment_t segs[1];
42 int nsegs;
43 int flags;
44 size_t size;
45 size_t align;
46 struct usb_frag_dma *frags;
47 LIST_ENTRY(usb_dma_block) next;
48};
49
50#define DMAADDR(dma, o) ((dma)->block->map->dm_segs[0].ds_addr + (dma)->offs + (o))
51#define KERNADDR(dma, o) \
52 ((void *)((char *)((dma)->block->kaddr + (dma)->offs) + (o)))
53
54usbd_status usb_allocmem(struct usbd_bus *, size_t, size_t, int,
55 struct usb_dma *);
56void usb_freemem(struct usbd_bus *, struct usb_dma *);
57void usb_syncmem(struct usb_dma *, bus_addr_t, bus_size_t, int);