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