2 * SPDX-License-Identifier: BSD-4-Clause
5 * Hidetoshi Shimokawa. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
18 * This product includes software developed by Hidetoshi Shimokawa.
20 * 4. Neither the name of the author nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 bus_dma_tag_t dma_tag;
52 struct fwdma_alloc_multi {
56 bus_dma_tag_t dma_tag;
57 struct fwdma_seg seg[0];
60 static __inline void *
61 fwdma_v_addr(struct fwdma_alloc_multi *am, int index)
63 bus_size_t ssize = am->ssize;
64 int offset = am->esize * index;
66 return ((caddr_t)am->seg[offset / ssize].v_addr + (offset % ssize));
69 static __inline bus_addr_t
70 fwdma_bus_addr(struct fwdma_alloc_multi *am, int index)
72 bus_size_t ssize = am->ssize;
73 int offset = am->esize * index;
75 return (am->seg[offset / ssize].bus_addr + (offset % ssize));
79 fwdma_sync(struct fwdma_alloc *dma, bus_dmasync_op_t op)
81 bus_dmamap_sync(dma->dma_tag, dma->dma_map, op);
85 fwdma_sync_multiseg(struct fwdma_alloc_multi *am,
86 int start, int end, bus_dmasync_op_t op)
88 struct fwdma_seg *seg, *eseg;
90 seg = &am->seg[am->esize * start / am->ssize];
91 eseg = &am->seg[am->esize * end / am->ssize];
92 for (; seg <= eseg; seg++)
93 bus_dmamap_sync(am->dma_tag, seg->dma_map, op);
97 fwdma_sync_multiseg_all(struct fwdma_alloc_multi *am, bus_dmasync_op_t op)
99 struct fwdma_seg *seg;
103 for (i = 0; i < am->nseg; i++, seg++)
104 bus_dmamap_sync(am->dma_tag, seg->dma_map, op);
107 void *fwdma_malloc(struct firewire_comm *, int, bus_size_t, struct fwdma_alloc *, int);
108 void fwdma_free(struct firewire_comm *, struct fwdma_alloc *);
109 void *fwdma_malloc_size(bus_dma_tag_t, bus_dmamap_t *, bus_size_t, bus_addr_t *, int);
110 void fwdma_free_size(bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t);
111 struct fwdma_alloc_multi *fwdma_malloc_multiseg(struct firewire_comm *,
113 void fwdma_free_multiseg(struct fwdma_alloc_multi *);