| 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 | |