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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 *);