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 34 typedef 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 50 usbd_status usb_allocmem(struct usbd_bus *, size_t, size_t, usb_dma_t *); 51 usbd_status usb_allocmem_flags(struct usbd_bus *, size_t, size_t, usb_dma_t *, 52 int); 53 void usb_freemem(struct usbd_bus *, usb_dma_t *); 54 void usb_syncmem(usb_dma_t *, bus_addr_t, bus_size_t, int); 55 56 bus_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