diff options
Diffstat (limited to 'sys/dev/proto/proto_busdma.h')
| -rw-r--r-- | sys/dev/proto/proto_busdma.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/sys/dev/proto/proto_busdma.h b/sys/dev/proto/proto_busdma.h new file mode 100644 index 0000000..b4957f5 --- /dev/null +++ b/sys/dev/proto/proto_busdma.h @@ -0,0 +1,75 @@ +/*- + * Copyright (c) 2015 Marcel Moolenaar + * 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 ``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 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 _DEV_PROTO_BUSDMA_H_ +#define _DEV_PROTO_BUSDMA_H_ + +struct proto_md; + +struct proto_tag { + LIST_ENTRY(proto_tag) tags; + struct proto_tag *parent; + LIST_ENTRY(proto_tag) peers; + LIST_HEAD(,proto_tag) children; + LIST_HEAD(,proto_md) mds; + bus_addr_t align; + bus_addr_t bndry; + bus_addr_t maxaddr; + bus_size_t maxsz; + bus_size_t maxsegsz; + u_int nsegs; + u_int datarate; +}; + +struct proto_md { + LIST_ENTRY(proto_md) mds; + LIST_ENTRY(proto_md) peers; + struct proto_tag *tag; + void *virtaddr; + vm_paddr_t physaddr; + bus_dma_tag_t bd_tag; + bus_dmamap_t bd_map; +}; + +struct proto_busdma { + LIST_HEAD(,proto_tag) tags; + LIST_HEAD(,proto_md) mds; + bus_dma_tag_t bd_roottag; +}; + +struct proto_busdma *proto_busdma_attach(struct proto_softc *); +int proto_busdma_detach(struct proto_softc *, struct proto_busdma *); + +int proto_busdma_cleanup(struct proto_softc *, struct proto_busdma *); + +int proto_busdma_ioctl(struct proto_softc *, struct proto_busdma *, + struct proto_ioc_busdma *); + +int proto_busdma_mmap_allowed(struct proto_busdma *, vm_paddr_t); + +#endif /* _DEV_PROTO_BUSDMA_H_ */ |
