1/* $NetBSD: usb_mem.h,v 1.31 2016/04/23 10:15:32 skrll Exp $ */
2/* $FreeBSD: src/sys/dev/usb/usb_mem.h,v 1.9 1999/11/17 22:33:47 n_hibma Exp $ */
3
4/*
5 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Lennart Augustsson (lennart@augustsson.net) at
10 * Carlstedt Research & Technology.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34typedef struct usb_dma_block {
35 bus_dma_tag_t tag;
36 bus_dmamap_t map;
37 void *kaddr;
38 bus_dma_segment_t *segs;
39 int nsegs;
40 int nsegs_alloc;
41 size_t size;
42 size_t align;
43 int flags;
44#define USB_DMA_FULLBLOCK 0x0001
45 LIST_ENTRY(usb_dma_block) next;
46} usb_dma_block_t;
47
48#define USBMALLOC_MULTISEG 1
49
50usbd_status usb_allocmem(struct usbd_bus *, size_t, size_t, usb_dma_t *);
51usbd_status usb_allocmem_flags(struct usbd_bus *, size_t, size_t, usb_dma_t *,
52 int);
53void usb_freemem(struct usbd_bus *, usb_dma_t *);
54void usb_syncmem(usb_dma_t *, bus_addr_t, bus_size_t, int);
55
56bus_addr_t usb_dmaaddr(usb_dma_t *, unsigned int);
57
58#define DMAADDR(dma, o) usb_dmaaddr((dma), (o))
59#define KERNADDR(dma, o) \
60 ((void *)((char *)(dma)->udma_block->kaddr + (dma)->udma_offs + (o)))
61