1 /*- 2 * Copyright (C) 2003 3 * Hidetoshi Shimokawa. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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: 15 * 16 * This product includes software developed by Hidetoshi Shimokawa. 17 * 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. 21 * 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 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD: src/sys/dev/firewire/fwdma.h,v 1.3 2005/01/06 01:42:41 imp Exp $ 35 */ 36 #ifndef _FWDMA_H 37 #define _FWDMA_H 38 39 #include "fwglue.h" 40 41 42 struct fwdma_alloc { 43 // bus_dma_tag_t dma_tag; 44 // bus_dmamap_t dma_map; 45 area_id Area; 46 void * v_addr; 47 bus_addr_t bus_addr; 48 }; 49 50 struct fwdma_seg { 51 // bus_dmamap_t dma_map; 52 53 void * v_addr; 54 bus_addr_t bus_addr; 55 }; 56 57 struct fwdma_alloc_multi { 58 bus_size_t ssize; 59 bus_size_t esize; 60 int nseg; 61 // bus_dma_tag_t dma_tag; 62 area_id Area; 63 64 struct fwdma_seg seg[0]; 65 }; 66 67 static __inline void * 68 fwdma_v_addr(struct fwdma_alloc_multi *am, int index) 69 { 70 bus_size_t ssize = am->ssize; 71 int offset = am->esize * index; 72 73 return ((caddr_t)am->seg[offset / ssize].v_addr + (offset % ssize)); 74 } 75 76 static __inline bus_addr_t 77 fwdma_bus_addr(struct fwdma_alloc_multi *am, int index) 78 { 79 bus_size_t ssize = am->ssize; 80 int offset = am->esize * index; 81 82 return (am->seg[offset / ssize].bus_addr + (offset % ssize)); 83 } 84 #ifndef __HAIKU__ 85 static __inline void 86 fwdma_sync(struct fwdma_alloc *dma, bus_dmasync_op_t op) 87 { 88 bus_dmamap_sync(dma->dma_tag, dma->dma_map, op); 89 } 90 91 static __inline void 92 fwdma_sync_multiseg(struct fwdma_alloc_multi *am, 93 int start, int end, bus_dmasync_op_t op) 94 { 95 struct fwdma_seg *seg, *eseg; 96 97 seg = &am->seg[am->esize * start / am->ssize]; 98 eseg = &am->seg[am->esize * end / am->ssize]; 99 for (; seg <= eseg; seg ++) 100 bus_dmamap_sync(am->dma_tag, seg->dma_map, op); 101 } 102 103 static __inline void 104 fwdma_sync_multiseg_all(struct fwdma_alloc_multi *am, bus_dmasync_op_t op) 105 { 106 struct fwdma_seg *seg; 107 int i; 108 109 seg = &am->seg[0]; 110 for (i = 0; i < am->nseg; i++, seg++) 111 bus_dmamap_sync(am->dma_tag, seg->dma_map, op); 112 } 113 114 void *fwdma_malloc(struct firewire_comm *, int, bus_size_t, struct fwdma_alloc *, int); 115 void fwdma_free(struct firewire_comm *, struct fwdma_alloc *); 116 void *fwdma_malloc_size(bus_dma_tag_t, bus_dmamap_t *, bus_size_t, bus_addr_t *, int); 117 void fwdma_free_size(bus_dma_tag_t, bus_dmamap_t, void *, bus_size_t); 118 119 struct fwdma_alloc_multi *fwdma_malloc_multiseg(struct firewire_comm *, 120 int, int, int, int); 121 #else 122 struct fwdma_alloc_multi *fwdma_malloc_multiseg(int, int, int); 123 void fwdma_free_multiseg(struct fwdma_alloc_multi *); 124 #endif /*__HAIKU__*/ 125 126 #endif /* _FWDMA_H*/ 127