Annotation of sys/dev/usb/usb_mem.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: usb_mem.h,v 1.11 2005/06/10 04:11:48 martin 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: * 3. All advertising materials mentioning features or use of this software
22: * must display the following acknowledgement:
23: * This product includes software developed by the NetBSD
24: * Foundation, Inc. and its contributors.
25: * 4. Neither the name of The NetBSD Foundation nor the names of its
26: * contributors may be used to endorse or promote products derived
27: * from this software without specific prior written permission.
28: *
29: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
30: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
31: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
32: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
33: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
34: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
35: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
36: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
37: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
38: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
39: * POSSIBILITY OF SUCH DAMAGE.
40: */
41:
42: typedef struct usb_dma_block {
43: bus_dma_tag_t tag;
44: bus_dmamap_t map;
45: caddr_t kaddr;
46: bus_dma_segment_t segs[1];
47: int nsegs;
48: size_t size;
49: size_t align;
50: int fullblock;
51: LIST_ENTRY(usb_dma_block) next;
52: } usb_dma_block_t;
53:
54: #define DMAADDR(dma, o) ((dma)->block->map->dm_segs[0].ds_addr + (dma)->offs + (o))
55: #define KERNADDR(dma, o) \
56: ((void *)((char *)((dma)->block->kaddr + (dma)->offs) + (o)))
57:
58: usbd_status usb_allocmem(usbd_bus_handle,size_t,size_t, usb_dma_t *);
59: void usb_freemem(usbd_bus_handle, usb_dma_t *);
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