diff options
Diffstat (limited to 'sys/dev/usb/usb_mem.h')
| -rw-r--r-- | sys/dev/usb/usb_mem.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/sys/dev/usb/usb_mem.h b/sys/dev/usb/usb_mem.h new file mode 100644 index 0000000..7391d18 --- /dev/null +++ b/sys/dev/usb/usb_mem.h @@ -0,0 +1,91 @@ +/* $NetBSD: usb_mem.h,v 1.1 1998/07/24 21:09:08 augustss Exp $ */ + +/* + * Copyright (c) 1998 The NetBSD Foundation, Inc. + * All rights reserved. + * + * Author: Lennart Augustsson <augustss@carlstedt.se> + * Carlstedt Research & Technology + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#if defined(__NetBSD__) +typedef struct usb_block_dma { + bus_dma_tag_t tag; + bus_dmamap_t map; + caddr_t kaddr; + bus_dma_segment_t segs[1]; + int nsegs; + size_t size; + size_t align; + int fullblock; + LIST_ENTRY(usb_block_dma) next; +} usb_dma_block_t; + +typedef struct { + usb_dma_block_t *block; + u_int offs; +} usb_dma_t; + +#define DMAADDR(dma) ((dma)->block->segs[0].ds_addr + (dma)->offs) +#define KERNADDR(dma) ((void *)((dma)->block->kaddr + (dma)->offs)) + +usbd_status usb_allocmem __P((bus_dma_tag_t, size_t, size_t, usb_dma_t *)); +void usb_freemem __P((bus_dma_tag_t, usb_dma_t *)); + +#else + +/* FreeBSD does not have special functions for dma memory, so let's keep it + * simple for now. + */ + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/queue.h> +#include <sys/proc.h> +#include <sys/buf.h> +#include <sys/malloc.h> +#include <sys/kernel.h> +#include <vm/vm.h> +#include <vm/pmap.h> + +#include <machine/pmap.h> /* for vtophys */ + + + +typedef void * usb_dma_t; + +#define usb_allocmem(t,s,a,p) (*(p) = malloc(s, M_USB, M_NOWAIT), (*(p) == NULL? USBD_NOMEM: USBD_NORMAL_COMPLETION)) +#define usb_freemem(t,p) (free(*(p), M_USB)) + +#define DMAADDR(dma) (vtophys(*(dma))) +#define KERNADDR(dma) ((void *) *(dma)) +#endif + |
