sys/bus/usb/usb_mem.h

   1 /*
   2  * $NetBSD: usb_mem.h,v 1.18 2002/05/28 17:45:17 augustss Exp $
   3  * $FreeBSD: src/sys/dev/usb/usb_mem.h,v 1.20 2003/09/01 01:07:24 jmg Exp $
   4  * $DragonFly: src/sys/bus/usb/usb_mem.h,v 1.5 2007/06/27 12:27:59 hasso Exp $
   5  */
   6
   7 /*
   8  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   9  * All rights reserved.
  10  *
  11  * This code is derived from software contributed to The NetBSD Foundation
  12  * by Lennart Augustsson (lennart@augustsson.net) at
  13  * Carlstedt Research & Technology.
  14  *
  15  * Redistribution and use in source and binary forms, with or without
  16  * modification, are permitted provided that the following conditions
  17  * are met:
  18  * 1. Redistributions of source code must retain the above copyright
  19  *    notice, this list of conditions and the following disclaimer.
  20  * 2. Redistributions in binary form must reproduce the above copyright
  21  *    notice, this list of conditions and the following disclaimer in the
  22  *    documentation and/or other materials provided with the distribution.
  23  * 3. All advertising materials mentioning features or use of this software
  24  *    must display the following acknowledgement:
  25  *        This product includes software developed by the NetBSD
  26  *        Foundation, Inc. and its contributors.
  27  * 4. Neither the name of The NetBSD Foundation nor the names of its
  28  *    contributors may be used to endorse or promote products derived
  29  *    from this software without specific prior written permission.
  30  *
  31  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  32  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  33  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  34  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  35  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  36  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  37  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  38  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  39  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  40  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGE.
  42  */
  43
  44 typedef struct usb_dma_block {
  45         bus_dma_tag_t tag;
  46         bus_dmamap_t map;
  47         void *kaddr;
  48         bus_dma_segment_t segs[1];
  49         int nsegs;
  50         size_t size;
  51         size_t align;
  52         int fullblock;
  53         LIST_ENTRY(usb_dma_block) next;
  54 } usb_dma_block_t;
  55
  56 #define DMAADDR(dma, o) ((dma)->block->segs[0].ds_addr + (dma)->offs + (o))
  57 #define KERNADDR(dma, o) \
  58         ((void *)((char *)((dma)->block->kaddr) + (dma)->offs + (o)))
  59
  60 usbd_status     usb_allocmem(usbd_bus_handle,size_t,size_t, usb_dma_t *);
  61 void            usb_freemem(usbd_bus_handle, usb_dma_t *);