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 31 #ifndef __X86_BUSDMA_IMPL_H 32 #define __X86_BUSDMA_IMPL_H 33 34 struct bus_dma_tag_common { 35 struct bus_dma_impl *impl; 36 struct bus_dma_tag_common *parent; 37 bus_size_t alignment; 38 bus_addr_t boundary; 39 bus_addr_t lowaddr; 40 bus_addr_t highaddr; 41 bus_dma_filter_t *filter; 42 void *filterarg; 43 bus_size_t maxsize; 44 u_int nsegments; 45 bus_size_t maxsegsz; 46 int flags; 47 bus_dma_lock_t *lockfunc; 48 void *lockfuncarg; 49 int ref_count; 50 int domain; 51 }; 52 53 struct bus_dma_impl { 54 int (*tag_create)(bus_dma_tag_t parent, 55 bus_size_t alignment, bus_addr_t boundary, bus_addr_t lowaddr, 56 bus_addr_t highaddr, bus_dma_filter_t *filter, 57 void *filterarg, bus_size_t maxsize, int nsegments, 58 bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc, 59 void *lockfuncarg, bus_dma_tag_t *dmat); 60 int (*tag_destroy)(bus_dma_tag_t dmat); 61 int (*tag_set_domain)(bus_dma_tag_t); 62 bool (*id_mapped)(bus_dma_tag_t, vm_paddr_t, bus_size_t); 63 int (*map_create)(bus_dma_tag_t dmat, int flags, bus_dmamap_t *mapp); 64 int (*map_destroy)(bus_dma_tag_t dmat, bus_dmamap_t map); 65 int (*mem_alloc)(bus_dma_tag_t dmat, void** vaddr, int flags, 66 bus_dmamap_t *mapp); 67 void (*mem_free)(bus_dma_tag_t dmat, void *vaddr, bus_dmamap_t map); 68 int (*load_ma)(bus_dma_tag_t dmat, bus_dmamap_t map, 69 struct vm_page **ma, bus_size_t tlen, int ma_offs, int flags, 70 bus_dma_segment_t *segs, int *segp); 71 int (*load_phys)(bus_dma_tag_t dmat, bus_dmamap_t map, 72 vm_paddr_t buf, bus_size_t buflen, int flags, 73 bus_dma_segment_t *segs, int *segp); 74 int (*load_buffer)(bus_dma_tag_t dmat, bus_dmamap_t map, 75 void *buf, bus_size_t buflen, struct pmap *pmap, int flags, 76 bus_dma_segment_t *segs, int *segp); 77 void (*map_waitok)(bus_dma_tag_t dmat, bus_dmamap_t map, 78 struct memdesc *mem, bus_dmamap_callback_t *callback, 79 void *callback_arg); 80 bus_dma_segment_t *(*map_complete)(bus_dma_tag_t dmat, bus_dmamap_t map, 81 bus_dma_segment_t *segs, int nsegs, int error); 82 void (*map_unload)(bus_dma_tag_t dmat, bus_dmamap_t map); 83 void (*map_sync)(bus_dma_tag_t dmat, bus_dmamap_t map, 84 bus_dmasync_op_t op); 85 #ifdef KMSAN 86 void (*load_kmsan)(bus_dmamap_t map, struct memdesc *mem); 87 #endif 88 }; 89 90 int bus_dma_run_filter(struct bus_dma_tag_common *dmat, vm_paddr_t paddr); 91 int common_bus_dma_tag_create(struct bus_dma_tag_common *parent, 92 bus_size_t alignment, 93 bus_addr_t boundary, bus_addr_t lowaddr, bus_addr_t highaddr, 94 bus_dma_filter_t *filter, void *filterarg, bus_size_t maxsize, 95 int nsegments, bus_size_t maxsegsz, int flags, bus_dma_lock_t *lockfunc, 96 void *lockfuncarg, size_t sz, void **dmat); 97 98 extern struct bus_dma_impl bus_dma_bounce_impl; 99 100 #endif 101