/*-
* Copyright (c) 2001 TAKEMRUA Shin. 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.
* 3. Neither the name of the project 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 REGENTS 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 REGENTS 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.
*
*/
#define HPCMIPS_DMAMAP_COHERENT 0x100 /* no cache flush necessary on sync */
/*
* bus_dma_segment
*
* Describes a single contiguous DMA transaction. Values
* are suitable for programming into DMA registers.
*/
struct bus_dma_segment_hpcmips {
bus_addr_t _ds_vaddr; /* virtual address, 0 if invalid */
};
/*
* bus_dma_tag
*
* A machine-dependent opaque type describing the implementation of
* DMA for a given bus.
*/
struct bus_dma_tag_hpcmips {
struct bus_dma_tag bdt;
void *_dmamap_chipset_v;
};
/*
* bus_dmamap
*
* Describes a DMA mapping.
*/
struct bus_dmamap_hpcmips {
struct bus_dmamap bdm;
bus_size_t _dm_size; /* largest DMA transfer mappable */
int _dm_segcnt; /* number of segs this map can map */
bus_size_t _dm_maxmaxsegsz;/* fixed largest possible segment */
bus_size_t _dm_boundary; /* don't cross this */
int _dm_flags; /* misc. flags */
struct bus_dma_segment_hpcmips _dm_segs[1];
};
