1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2013 The FreeBSD Foundation 5 * 6 * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 7 * under sponsorship from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef __X86_BUSDMA_IMPL_H 34 #define __X86_BUSDMA_IMPL_H 35 36 struct bus_dma_tag_common { 37 struct bus_dma_impl *impl; 38 struct bus_dma_tag_common *parent; 39 bus_size_t alignment; 40 bus_addr_t boundary; 41 bus_addr_t lowaddr; 42 bus_addr_t highaddr; 43 bus_dma_filter_t *filter; 44 void *filterarg; 45 bus_size_t maxsize; 46 u_int nsegments; 47 bus_size_t maxsegsz; 48 int flags; 49 bus_dma_lock_t *lockfunc; 50 void *lockfuncarg; 51 int ref_count; 52 int domain; 53 }; 54 55 struct bus_dma_impl { 56 int (*tag_create)(bus_dma_tag_t parent, 57 bus_size_t alignment, bus_addr_t boundary, bus_addr_t lowaddr, 58 bus_addr_t highaddr, bus_dma_filter_t *filter, 59 void *filterarg, bus_size_t maxsize, int nsegments, 60 bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc, 61 void *lockfuncarg, bus_dma_tag_t *dmat); 62 int (*tag_destroy)(bus_dma_tag_t dmat); 63 int (*tag_set_domain)(bus_dma_tag_t); 64 bool (*id_mapped)(bus_dma_tag_t, vm_paddr_t, bus_size_t); 65 int (*map_create)(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp); 66 int (*map_destroy)(bus_dma_tag_t dmat, bus_dmamap_t map); 67 int (*mem_alloc)(bus_dma_tag_t dmat, void** vaddr, int flags, 68 bus_dmamap_t *mapp); 69 void (*mem_free)(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map); 70 int (*load_ma)(bus_dma_tag_t dmat, bus_dmamap_t map, 71 struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags, 72 bus_dma_segment_t *segs, int *segp); 73 int (*load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map, 74 vm_paddr_t buf, bus_size_t buflen, int flags, 75 bus_dma_segment_t *segs, int *segp); 76 int (*load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map, 77 void *buf, bus_size_t buflen, struct pmap *pmap, int flags, 78 bus_dma_segment_t *segs, int *segp); 79 void (*map_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map, 80 struct memdesc *mem, bus_dmamap_callback_t *callback, 81 void *callback_arg); 82 bus_dma_segment_t *(*map_complete)(bus_dma_tag_t dmat, bus_dmamap_t map, 83 bus_dma_segment_t *segs, int nsegs, int error); 84 void (*map_unload)(bus_dma_tag_t dmat, bus_dmamap_t map); 85 void (*map_sync)(bus_dma_tag_t dmat, bus_dmamap_t map, 86 bus_dmasync_op_t op); 87 #ifdef KMSAN 88 void (*load_kmsan)(bus_dmamap_t map, struct memdesc *mem); 89 #endif 90 }; 91 92 int bus_dma_run_filter(struct bus_dma_tag_common *dmat, vm_paddr_t paddr); 93 int common_bus_dma_tag_create(struct bus_dma_tag_common *parent, 94 bus_size_t alignment, 95 bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr, 96 bus_dma_filter_t *filter, void *filterarg, bus_size_t maxsize, 97 int nsegments, bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc, 98 void *lockfuncarg, size_t sz, void **dmat); 99 100 extern struct bus_dma_impl bus_dma_bounce_impl; 101 102 #endif 103