1257230Skib/*- 2257230Skib * Copyright (c) 2013 The FreeBSD Foundation 3257230Skib * All rights reserved. 4257230Skib * 5257230Skib * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 6257230Skib * under sponsorship from the FreeBSD Foundation. 7257230Skib * 8257230Skib * Redistribution and use in source and binary forms, with or without 9257230Skib * modification, are permitted provided that the following conditions 10257230Skib * are met: 11257230Skib * 1. Redistributions of source code must retain the above copyright 12257230Skib * notice, this list of conditions and the following disclaimer. 13257230Skib * 2. Redistributions in binary form must reproduce the above copyright 14257230Skib * notice, this list of conditions and the following disclaimer in the 15257230Skib * documentation and/or other materials provided with the distribution. 16257230Skib * 17257230Skib * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18257230Skib * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19257230Skib * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20257230Skib * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21257230Skib * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22257230Skib * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23257230Skib * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24257230Skib * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25257230Skib * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26257230Skib * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27257230Skib * SUCH DAMAGE. 28257230Skib * 29257230Skib * $FreeBSD$ 30257230Skib */ 31257230Skib 32257230Skib#ifndef __X86_BUSDMA_IMPL_H 33257230Skib#define __X86_BUSDMA_IMPL_H 34257230Skib 35257230Skibstruct bus_dma_tag_common { 36257230Skib struct bus_dma_impl *impl; 37257230Skib struct bus_dma_tag_common *parent; 38257230Skib bus_size_t alignment; 39257230Skib bus_addr_t boundary; 40257230Skib bus_addr_t lowaddr; 41257230Skib bus_addr_t highaddr; 42257230Skib bus_dma_filter_t *filter; 43257230Skib void *filterarg; 44257230Skib bus_size_t maxsize; 45257230Skib u_int nsegments; 46257230Skib bus_size_t maxsegsz; 47257230Skib int flags; 48257230Skib bus_dma_lock_t *lockfunc; 49257230Skib void *lockfuncarg; 50257230Skib int ref_count; 51257230Skib}; 52257230Skib 53257230Skibstruct bus_dma_impl { 54257230Skib int (*tag_create)(bus_dma_tag_t parent, 55257230Skib bus_size_t alignment, bus_addr_t boundary, bus_addr_t lowaddr, 56257230Skib bus_addr_t highaddr, bus_dma_filter_t *filter, 57257230Skib void *filterarg, bus_size_t maxsize, int nsegments, 58257230Skib bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc, 59257230Skib void *lockfuncarg, bus_dma_tag_t *dmat); 60257230Skib int (*tag_destroy)(bus_dma_tag_t dmat); 61257230Skib int (*map_create)(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp); 62257230Skib int (*map_destroy)(bus_dma_tag_t dmat, bus_dmamap_t map); 63257230Skib int (*mem_alloc)(bus_dma_tag_t dmat, void** vaddr, int flags, 64257230Skib bus_dmamap_t *mapp); 65257230Skib void (*mem_free)(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map); 66257230Skib int (*load_ma)(bus_dma_tag_t dmat, bus_dmamap_t map, 67257230Skib struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags, 68257230Skib bus_dma_segment_t *segs, int *segp); 69257230Skib int (*load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map, 70257230Skib vm_paddr_t buf, bus_size_t buflen, int flags, 71257230Skib bus_dma_segment_t *segs, int *segp); 72257230Skib int (*load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map, 73257230Skib void *buf, bus_size_t buflen, pmap_t pmap, int flags, 74257230Skib bus_dma_segment_t *segs, int *segp); 75257230Skib void (*map_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map, 76257230Skib struct memdesc *mem, bus_dmamap_callback_t *callback, 77257230Skib void *callback_arg); 78257230Skib bus_dma_segment_t *(*map_complete)(bus_dma_tag_t dmat, bus_dmamap_t map, 79257230Skib bus_dma_segment_t *segs, int nsegs, int error); 80257230Skib void (*map_unload)(bus_dma_tag_t dmat, bus_dmamap_t map); 81257230Skib void (*map_sync)(bus_dma_tag_t dmat, bus_dmamap_t map, 82257230Skib bus_dmasync_op_t op); 83257230Skib}; 84257230Skib 85257230Skibvoid bus_dma_dflt_lock(void *arg, bus_dma_lock_op_t op); 86257230Skibint bus_dma_run_filter(struct bus_dma_tag_common *dmat, bus_addr_t paddr); 87257230Skibint common_bus_dma_tag_create(struct bus_dma_tag_common *parent, 88257230Skib bus_size_t alignment, 89257230Skib bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr, 90257230Skib bus_dma_filter_t *filter, void *filterarg, bus_size_t maxsize, 91257230Skib int nsegments, bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc, 92257230Skib void *lockfuncarg, size_t sz, void **dmat); 93257230Skib 94257230Skibextern struct bus_dma_impl bus_dma_bounce_impl; 95257230Skib 96257230Skib#endif 97