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Annotation of sys/dev/usb/usb_mem.h, Revision 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 *);