3 * Hidetoshi Shimokawa. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
16 * This product includes software developed by Hidetoshi Shimokawa.
18 * 4. Neither the name of the author nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 bus_dma_tag_t dma_tag;
50 struct fwdma_alloc_multi {
54 bus_dma_tag_t dma_tag;
55 struct fwdma_seg seg[0];
58 static __inline void *
59 fwdma_v_addr(struct fwdma_alloc_multi *am, int index)
61 bus_size_t ssize = am->ssize;
62 int offset = am->esize * index;
64 return ((caddr_t)am->seg[offset / ssize].v_addr + (offset % ssize));
67 static __inline bus_addr_t
68 fwdma_bus_addr(struct fwdma_alloc_multi *am, int index)
70 bus_size_t ssize = am->ssize;
71 int offset = am->esize * index;
73 return (am->seg[offset / ssize].bus_addr + (offset % ssize));
77 fwdma_sync(struct fwdma_alloc *dma, bus_dmasync_op_t op)
79 bus_dmamap_sync(dma->dma_tag, dma->dma_map, op);
83 fwdma_sync_multiseg(struct fwdma_alloc_multi *am,
84 int start, int end, bus_dmasync_op_t op)
86 struct fwdma_seg *seg, *eseg;
88 seg = &am->seg[am->esize * start / am->ssize];
89 eseg = &am->seg[am->esize * end / am->ssize];
90 for (; seg <= eseg; seg ++)
91 bus_dmamap_sync(am->dma_tag, seg->dma_map, op);
95 fwdma_sync_multiseg_all(struct fwdma_alloc_multi *am, bus_dmasync_op_t op)
97 struct fwdma_seg *seg;
101 for (i = 0; i < am->nseg; i++, seg++)
102 bus_dmamap_sync(am->dma_tag, seg->dma_map, op);
105 void *fwdma_malloc(struct firewire_comm *, int, bus_size_t, struct fwdma_alloc *, int);
106 void fwdma_free(struct firewire_comm *, struct fwdma_alloc *);
107 void *fwdma_malloc_size(bus_dma_tag_t, bus_dmamap_t *, bus_size_t, bus_addr_t *, int);
108 void fwdma_free_size(bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t);
109 struct fwdma_alloc_multi *fwdma_malloc_multiseg(struct firewire_comm *,
111 void fwdma_free_multiseg(struct fwdma_alloc_multi *);