| /*- |
| * Copyright 2006 John-Mark Gurney. |
| * All rights reserved. |
| * |
| * 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. |
| * |
| * $FreeBSD$ |
| * |
| */ |
| |
| #ifndef _BSD_SYS__BUS_DMA_H_ |
| #define _BSD_SYS__BUS_DMA_H_ |
| |
| typedef int bus_dmasync_op_t; |
| |
| /* |
| * bus_dma_tag_t |
| * |
| * A machine-dependent opaque type describing the characteristics |
| * of how to perform DMA mappings. This structure encapsultes |
| * information concerning address and alignment restrictions, number |
| * of S/G segments, amount of data per S/G segment, etc. |
| */ |
| typedef struct bus_dma_tag *bus_dma_tag_t; |
| |
| /* |
| * bus_dmamap_t |
| * |
| * DMA mapping instance information. |
| */ |
| typedef struct bus_dmamap *bus_dmamap_t; |
| |
| /* |
| * A function that performs driver-specific synchronization on behalf of |
| * busdma. |
| */ |
| typedef enum { |
| BUS_DMA_LOCK = 0x01, |
| BUS_DMA_UNLOCK = 0x02, |
| } bus_dma_lock_op_t; |
| |
| typedef void bus_dma_lock_t(void *, bus_dma_lock_op_t); |
| |
| #endif /* !_BSD_SYS__BUS_DMA_H_ */ |
