tc_dma.c revision 1.2.2.2
1 1.2.2.2 cgd /* $NetBSD: tc_dma.c,v 1.2.2.2 1997/06/07 04:43:38 cgd Exp $ */ 2 1.2.2.2 cgd 3 1.2.2.2 cgd /*- 4 1.2.2.2 cgd * Copyright (c) 1997 The NetBSD Foundation, Inc. 5 1.2.2.2 cgd * All rights reserved. 6 1.2.2.2 cgd * 7 1.2.2.2 cgd * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 cgd * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 1.2.2.2 cgd * NASA Ames Research Center. 10 1.2.2.2 cgd * 11 1.2.2.2 cgd * Redistribution and use in source and binary forms, with or without 12 1.2.2.2 cgd * modification, are permitted provided that the following conditions 13 1.2.2.2 cgd * are met: 14 1.2.2.2 cgd * 1. Redistributions of source code must retain the above copyright 15 1.2.2.2 cgd * notice, this list of conditions and the following disclaimer. 16 1.2.2.2 cgd * 2. Redistributions in binary form must reproduce the above copyright 17 1.2.2.2 cgd * notice, this list of conditions and the following disclaimer in the 18 1.2.2.2 cgd * documentation and/or other materials provided with the distribution. 19 1.2.2.2 cgd * 3. All advertising materials mentioning features or use of this software 20 1.2.2.2 cgd * must display the following acknowledgement: 21 1.2.2.2 cgd * This product includes software developed by the NetBSD 22 1.2.2.2 cgd * Foundation, Inc. and its contributors. 23 1.2.2.2 cgd * 4. Neither the name of The NetBSD Foundation nor the names of its 24 1.2.2.2 cgd * contributors may be used to endorse or promote products derived 25 1.2.2.2 cgd * from this software without specific prior written permission. 26 1.2.2.2 cgd * 27 1.2.2.2 cgd * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 1.2.2.2 cgd * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 1.2.2.2 cgd * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 1.2.2.2 cgd * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 1.2.2.2 cgd * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 1.2.2.2 cgd * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 1.2.2.2 cgd * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 1.2.2.2 cgd * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 1.2.2.2 cgd * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 1.2.2.2 cgd * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 1.2.2.2 cgd * POSSIBILITY OF SUCH DAMAGE. 38 1.2.2.2 cgd */ 39 1.2.2.2 cgd 40 1.2.2.2 cgd #include <machine/options.h> /* Config options headers */ 41 1.2.2.2 cgd #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */ 42 1.2.2.2 cgd 43 1.2.2.2 cgd __KERNEL_RCSID(0, "$NetBSD: tc_dma.c,v 1.2.2.2 1997/06/07 04:43:38 cgd Exp $"); 44 1.2.2.2 cgd 45 1.2.2.2 cgd #include <sys/param.h> 46 1.2.2.2 cgd #include <sys/device.h> 47 1.2.2.2 cgd 48 1.2.2.2 cgd #define _ALPHA_BUS_DMA_PRIVATE 49 1.2.2.2 cgd #include <machine/bus.h> 50 1.2.2.2 cgd 51 1.2.2.2 cgd #include <dev/tc/tcvar.h> 52 1.2.2.2 cgd 53 1.2.2.2 cgd bus_dma_tag_t (*tc_dma_get_tag_func) __P((int)); 54 1.2.2.2 cgd 55 1.2.2.2 cgd int tc_bus_dmamap_load_direct __P((bus_dma_tag_t, bus_dmamap_t, void *, 56 1.2.2.2 cgd bus_size_t, struct proc *, int)); 57 1.2.2.2 cgd int tc_bus_dmamap_load_mbuf_direct __P((bus_dma_tag_t, bus_dmamap_t, 58 1.2.2.2 cgd struct mbuf *, int)); 59 1.2.2.2 cgd int tc_bus_dmamap_load_uio_direct __P((bus_dma_tag_t, bus_dmamap_t, 60 1.2.2.2 cgd struct uio *, int)); 61 1.2.2.2 cgd int tc_bus_dmamap_load_raw_direct __P((bus_dma_tag_t, bus_dmamap_t, 62 1.2.2.2 cgd bus_dma_segment_t *, int, bus_size_t, int)); 63 1.2.2.2 cgd 64 1.2.2.2 cgd 65 1.2.2.2 cgd struct alpha_bus_dma_tag tc_dmat_direct = { 66 1.2.2.2 cgd NULL, /* _cookie */ 67 1.2.2.2 cgd NULL, /* _get_tag */ 68 1.2.2.2 cgd _bus_dmamap_create, 69 1.2.2.2 cgd _bus_dmamap_destroy, 70 1.2.2.2 cgd tc_bus_dmamap_load_direct, 71 1.2.2.2 cgd tc_bus_dmamap_load_mbuf_direct, 72 1.2.2.2 cgd tc_bus_dmamap_load_uio_direct, 73 1.2.2.2 cgd tc_bus_dmamap_load_raw_direct, 74 1.2.2.2 cgd _bus_dmamap_unload, 75 1.2.2.2 cgd NULL, /* _dmamap_sync */ 76 1.2.2.2 cgd _bus_dmamem_alloc, 77 1.2.2.2 cgd _bus_dmamem_free, 78 1.2.2.2 cgd _bus_dmamem_map, 79 1.2.2.2 cgd _bus_dmamem_unmap, 80 1.2.2.2 cgd _bus_dmamem_mmap, 81 1.2.2.2 cgd }; 82 1.2.2.2 cgd 83 1.2.2.2 cgd void 84 1.2.2.2 cgd tc_dma_init() 85 1.2.2.2 cgd { 86 1.2.2.2 cgd 87 1.2.2.2 cgd /* XXX XXX BEGIN XXX XXX */ 88 1.2.2.2 cgd { /* XXX */ 89 1.2.2.2 cgd extern vm_offset_t alpha_XXX_dmamap_or; /* XXX */ 90 1.2.2.2 cgd alpha_XXX_dmamap_or = 0; /* XXX */ 91 1.2.2.2 cgd } /* XXX */ 92 1.2.2.2 cgd /* XXX XXX END XXX XXX */ 93 1.2.2.2 cgd } 94 1.2.2.2 cgd 95 1.2.2.2 cgd /* 96 1.2.2.2 cgd * Load a TurboChannel direct-mapped DMA map with a linear buffer. 97 1.2.2.2 cgd */ 98 1.2.2.2 cgd int 99 1.2.2.2 cgd tc_bus_dmamap_load_direct(t, map, buf, buflen, p, flags) 100 1.2.2.2 cgd bus_dma_tag_t t; 101 1.2.2.2 cgd bus_dmamap_t map; 102 1.2.2.2 cgd void *buf; 103 1.2.2.2 cgd bus_size_t buflen; 104 1.2.2.2 cgd struct proc *p; 105 1.2.2.2 cgd int flags; 106 1.2.2.2 cgd { 107 1.2.2.2 cgd 108 1.2.2.2 cgd return (_bus_dmamap_load_direct_common(t, map, buf, buflen, p, 109 1.2.2.2 cgd flags, 0)); 110 1.2.2.2 cgd } 111 1.2.2.2 cgd 112 1.2.2.2 cgd /* 113 1.2.2.2 cgd * Load a TurboChannel direct-mapped DMA map with an mbuf chain. 114 1.2.2.2 cgd */ 115 1.2.2.2 cgd int 116 1.2.2.2 cgd tc_bus_dmamap_load_mbuf_direct(t, map, m, flags) 117 1.2.2.2 cgd bus_dma_tag_t t; 118 1.2.2.2 cgd bus_dmamap_t map; 119 1.2.2.2 cgd struct mbuf *m; 120 1.2.2.2 cgd int flags; 121 1.2.2.2 cgd { 122 1.2.2.2 cgd 123 1.2.2.2 cgd return (_bus_dmamap_load_mbuf_direct_common(t, map, m, 124 1.2.2.2 cgd flags, 0)); 125 1.2.2.2 cgd } 126 1.2.2.2 cgd 127 1.2.2.2 cgd /* 128 1.2.2.2 cgd * Load a TurboChannel direct-mapped DMA map with a uio. 129 1.2.2.2 cgd */ 130 1.2.2.2 cgd int 131 1.2.2.2 cgd tc_bus_dmamap_load_uio_direct(t, map, uio, flags) 132 1.2.2.2 cgd bus_dma_tag_t t; 133 1.2.2.2 cgd bus_dmamap_t map; 134 1.2.2.2 cgd struct uio *uio; 135 1.2.2.2 cgd int flags; 136 1.2.2.2 cgd { 137 1.2.2.2 cgd 138 1.2.2.2 cgd return (_bus_dmamap_load_uio_direct_common(t, map, uio, 139 1.2.2.2 cgd flags, 0)); 140 1.2.2.2 cgd } 141 1.2.2.2 cgd 142 1.2.2.2 cgd /* 143 1.2.2.2 cgd * Load a TurboChannel direct-mapped DMA map with raw memory. 144 1.2.2.2 cgd */ 145 1.2.2.2 cgd int 146 1.2.2.2 cgd tc_bus_dmamap_load_raw_direct(t, map, segs, nsegs, size, flags) 147 1.2.2.2 cgd bus_dma_tag_t t; 148 1.2.2.2 cgd bus_dmamap_t map; 149 1.2.2.2 cgd bus_dma_segment_t *segs; 150 1.2.2.2 cgd int nsegs; 151 1.2.2.2 cgd bus_size_t size; 152 1.2.2.2 cgd int flags; 153 1.2.2.2 cgd { 154 1.2.2.2 cgd 155 1.2.2.2 cgd return (_bus_dmamap_load_raw_direct_common(t, map, segs, nsegs, 156 1.2.2.2 cgd size, flags, 0)); 157 1.2.2.2 cgd } 158
Indexes created Sat Nov 01 19:09:55 GMT 2025