/*- * Copyright (c) 2015, 2019 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 sx sxlck; }; 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 *, struct thread *); int proto_busdma_mmap_allowed(struct proto_busdma *, vm_paddr_t); #endif /* _DEV_PROTO_BUSDMA_H_ */ |