1 /* $NetBSD: usb_mem.h,v 1.15 2000/06/28 16:39:27 mrg 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 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 #if defined(__NetBSD__) || defined(__OpenBSD__) 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) ((dma)->block->map->dm_segs[0].ds_addr + (dma)->offs) 55 #define KERNADDR(dma) ((void *)((dma)->block->kaddr + (dma)->offs)) 56 57 usbd_status usb_allocmem(usbd_bus_handle,size_t,size_t, usb_dma_t *); 58 void usb_freemem(usbd_bus_handle, usb_dma_t *); 59 60 #elif defined(__FreeBSD__) 61 62 /* 63 * FreeBSD does not have special functions for dma memory, so let's keep it 64 * simple for now. 65 */ 66 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/queue.h> 70 #include <sys/proc.h> 71 #include <sys/buf.h> 72 #include <sys/malloc.h> 73 #include <sys/kernel.h> 74 #include <vm/vm.h> 75 76 #define usb_allocmem(t,s,a,p) (*(p) = malloc(s, M_USB, M_NOWAIT), (*(p) == NULL? USBD_NOMEM: USBD_NORMAL_COMPLETION)) 77 #define usb_freemem(t,p) (free(*(p), M_USB)) 78 79 #ifdef __alpha__ 80 #define DMAADDR(dma) (alpha_XXX_dmamap((vm_offset_t) *(dma))) 81 #else 82 #define DMAADDR(dma) (vtophys(*(dma))) 83 #endif 84 #define KERNADDR(dma) ((void *) *(dma)) 85 #endif 86 87