bus_private.h revision 1.1.2.4
1 1.1.2.4 tron /* $NetBSD: bus_private.h,v 1.1.2.4 2005/08/25 20:57:24 tron Exp $ */ 2 1.1.2.2 tron /* NetBSD: bus.h,v 1.8 2005/03/09 19:04:46 matt Exp */ 3 1.1.2.2 tron 4 1.1.2.2 tron /*- 5 1.1.2.2 tron * Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc. 6 1.1.2.2 tron * All rights reserved. 7 1.1.2.2 tron * 8 1.1.2.2 tron * This code is derived from software contributed to The NetBSD Foundation 9 1.1.2.2 tron * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 10 1.1.2.2 tron * NASA Ames Research Center. 11 1.1.2.2 tron * 12 1.1.2.2 tron * Redistribution and use in source and binary forms, with or without 13 1.1.2.2 tron * modification, are permitted provided that the following conditions 14 1.1.2.2 tron * are met: 15 1.1.2.2 tron * 1. Redistributions of source code must retain the above copyright 16 1.1.2.2 tron * notice, this list of conditions and the following disclaimer. 17 1.1.2.2 tron * 2. Redistributions in binary form must reproduce the above copyright 18 1.1.2.2 tron * notice, this list of conditions and the following disclaimer in the 19 1.1.2.2 tron * documentation and/or other materials provided with the distribution. 20 1.1.2.2 tron * 3. All advertising materials mentioning features or use of this software 21 1.1.2.2 tron * must display the following acknowledgement: 22 1.1.2.2 tron * This product includes software developed by the NetBSD 23 1.1.2.2 tron * Foundation, Inc. and its contributors. 24 1.1.2.2 tron * 4. Neither the name of The NetBSD Foundation nor the names of its 25 1.1.2.2 tron * contributors may be used to endorse or promote products derived 26 1.1.2.2 tron * from this software without specific prior written permission. 27 1.1.2.2 tron * 28 1.1.2.2 tron * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 1.1.2.2 tron * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 1.1.2.2 tron * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 1.1.2.2 tron * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 1.1.2.2 tron * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 1.1.2.2 tron * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 1.1.2.2 tron * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 1.1.2.2 tron * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 1.1.2.2 tron * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 1.1.2.2 tron * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 1.1.2.2 tron * POSSIBILITY OF SUCH DAMAGE. 39 1.1.2.2 tron */ 40 1.1.2.2 tron 41 1.1.2.2 tron /* 42 1.1.2.2 tron * Copyright (c) 1996 Charles M. Hannum. All rights reserved. 43 1.1.2.2 tron * Copyright (c) 1996 Christopher G. Demetriou. All rights reserved. 44 1.1.2.2 tron * 45 1.1.2.2 tron * Redistribution and use in source and binary forms, with or without 46 1.1.2.2 tron * modification, are permitted provided that the following conditions 47 1.1.2.2 tron * are met: 48 1.1.2.2 tron * 1. Redistributions of source code must retain the above copyright 49 1.1.2.2 tron * notice, this list of conditions and the following disclaimer. 50 1.1.2.2 tron * 2. Redistributions in binary form must reproduce the above copyright 51 1.1.2.2 tron * notice, this list of conditions and the following disclaimer in the 52 1.1.2.2 tron * documentation and/or other materials provided with the distribution. 53 1.1.2.2 tron * 3. All advertising materials mentioning features or use of this software 54 1.1.2.2 tron * must display the following acknowledgement: 55 1.1.2.2 tron * This product includes software developed by Christopher G. Demetriou 56 1.1.2.2 tron * for the NetBSD Project. 57 1.1.2.2 tron * 4. The name of the author may not be used to endorse or promote products 58 1.1.2.2 tron * derived from this software without specific prior written permission 59 1.1.2.2 tron * 60 1.1.2.2 tron * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 61 1.1.2.2 tron * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 62 1.1.2.2 tron * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 1.1.2.2 tron * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 64 1.1.2.2 tron * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 65 1.1.2.2 tron * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 66 1.1.2.2 tron * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 67 1.1.2.2 tron * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 68 1.1.2.2 tron * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 69 1.1.2.2 tron * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 70 1.1.2.2 tron */ 71 1.1.2.2 tron 72 1.1.2.2 tron #if !defined(_X86_BUS_PRIVATE_H_) 73 1.1.2.2 tron #define _X86_BUS_PRIVATE_H_ 74 1.1.2.2 tron 75 1.1.2.2 tron int _bus_dmamap_create(bus_dma_tag_t, bus_size_t, int, bus_size_t, 76 1.1.2.2 tron bus_size_t, int, bus_dmamap_t *); 77 1.1.2.2 tron void _bus_dmamap_destroy(bus_dma_tag_t, bus_dmamap_t); 78 1.1.2.2 tron int _bus_dmamap_load(bus_dma_tag_t, bus_dmamap_t, void *, 79 1.1.2.2 tron bus_size_t, struct proc *, int); 80 1.1.2.2 tron int _bus_dmamap_load_mbuf(bus_dma_tag_t, bus_dmamap_t, 81 1.1.2.2 tron struct mbuf *, int); 82 1.1.2.2 tron int _bus_dmamap_load_uio(bus_dma_tag_t, bus_dmamap_t, 83 1.1.2.2 tron struct uio *, int); 84 1.1.2.2 tron int _bus_dmamap_load_raw(bus_dma_tag_t, bus_dmamap_t, 85 1.1.2.2 tron bus_dma_segment_t *, int, bus_size_t, int); 86 1.1.2.2 tron void _bus_dmamap_unload(bus_dma_tag_t, bus_dmamap_t); 87 1.1.2.2 tron void _bus_dmamap_sync(bus_dma_tag_t, bus_dmamap_t, bus_addr_t, 88 1.1.2.2 tron bus_size_t, int); 89 1.1.2.2 tron 90 1.1.2.2 tron int _bus_dmamem_alloc(bus_dma_tag_t tag, bus_size_t size, 91 1.1.2.2 tron bus_size_t alignment, bus_size_t boundary, 92 1.1.2.2 tron bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags); 93 1.1.2.2 tron void _bus_dmamem_free(bus_dma_tag_t tag, bus_dma_segment_t *segs, 94 1.1.2.2 tron int nsegs); 95 1.1.2.2 tron int _bus_dmamem_map(bus_dma_tag_t tag, bus_dma_segment_t *segs, 96 1.1.2.2 tron int nsegs, size_t size, caddr_t *kvap, int flags); 97 1.1.2.2 tron void _bus_dmamem_unmap(bus_dma_tag_t tag, caddr_t kva, size_t size); 98 1.1.2.2 tron paddr_t _bus_dmamem_mmap(bus_dma_tag_t tag, bus_dma_segment_t *segs, 99 1.1.2.2 tron int nsegs, off_t off, int prot, int flags); 100 1.1.2.2 tron 101 1.1.2.4 tron #ifndef _BUS_DMAMEM_ALLOC_RANGE 102 1.1.2.2 tron int _bus_dmamem_alloc_range(bus_dma_tag_t tag, bus_size_t size, 103 1.1.2.2 tron bus_size_t alignment, bus_size_t boundary, 104 1.1.2.2 tron bus_dma_segment_t *segs, int nsegs, int *rsegs, int flags, 105 1.1.2.3 tron bus_addr_t low, bus_addr_t high); 106 1.1.2.3 tron #endif 107 1.1.2.2 tron 108 1.1.2.2 tron /* 109 1.1.2.2 tron * Cookie used for bounce buffers. A pointer to one of these it stashed in 110 1.1.2.2 tron * the DMA map. 111 1.1.2.2 tron */ 112 1.1.2.2 tron struct x86_bus_dma_cookie { 113 1.1.2.2 tron int id_flags; /* flags; see below */ 114 1.1.2.2 tron 115 1.1.2.2 tron /* 116 1.1.2.2 tron * Information about the original buffer used during 117 1.1.2.2 tron * DMA map syncs. Note that origibuflen is only used 118 1.1.2.2 tron * for ID_BUFTYPE_LINEAR. 119 1.1.2.2 tron */ 120 1.1.2.2 tron void *id_origbuf; /* pointer to orig buffer if 121 1.1.2.2 tron bouncing */ 122 1.1.2.2 tron bus_size_t id_origbuflen; /* ...and size */ 123 1.1.2.2 tron int id_buftype; /* type of buffer */ 124 1.1.2.2 tron 125 1.1.2.2 tron void *id_bouncebuf; /* pointer to the bounce buffer */ 126 1.1.2.2 tron bus_size_t id_bouncebuflen; /* ...and size */ 127 1.1.2.2 tron int id_nbouncesegs; /* number of valid bounce segs */ 128 1.1.2.2 tron bus_dma_segment_t id_bouncesegs[0]; /* array of bounce buffer 129 1.1.2.2 tron physical memory segments */ 130 1.1.2.2 tron }; 131 1.1.2.2 tron 132 1.1.2.2 tron /* id_flags */ 133 1.1.2.2 tron #define X86_DMA_MIGHT_NEED_BOUNCE 0x01 /* may need bounce buffers */ 134 1.1.2.2 tron #define X86_DMA_HAS_BOUNCE 0x02 /* has bounce buffers */ 135 1.1.2.2 tron #define X86_DMA_IS_BOUNCING 0x04 /* is bouncing current xfer */ 136 1.1.2.2 tron 137 1.1.2.2 tron /* id_buftype */ 138 1.1.2.2 tron #define X86_DMA_BUFTYPE_INVALID 0 139 1.1.2.2 tron #define X86_DMA_BUFTYPE_LINEAR 1 140 1.1.2.2 tron #define X86_DMA_BUFTYPE_MBUF 2 141 1.1.2.2 tron #define X86_DMA_BUFTYPE_UIO 3 142 1.1.2.2 tron #define X86_DMA_BUFTYPE_RAW 4 143 1.1.2.2 tron 144 1.1.2.2 tron /* 145 1.1.2.2 tron * default address translation macros, which are appropriate where 146 1.1.2.2 tron * paddr_t == bus_addr_t. 147 1.1.2.2 tron */ 148 1.1.2.2 tron 149 1.1.2.2 tron #if !defined(_BUS_PHYS_TO_BUS) 150 1.1.2.2 tron #define _BUS_PHYS_TO_BUS(pa) ((bus_addr_t)(pa)) 151 1.1.2.2 tron #endif /* !defined(_BUS_PHYS_TO_BUS) */ 152 1.1.2.2 tron 153 1.1.2.2 tron #if !defined(_BUS_VM_PAGE_TO_BUS) 154 1.1.2.2 tron #define _BUS_VM_PAGE_TO_BUS(pg) _BUS_PHYS_TO_BUS(VM_PAGE_TO_PHYS(pg)) 155 1.1.2.2 tron #endif /* !defined(_BUS_VM_PAGE_TO_BUS) */ 156 1.1.2.2 tron 157 1.1.2.2 tron #if !defined(_BUS_VIRT_TO_BUS) 158 1.1.2.2 tron #include <uvm/uvm_extern.h> 159 1.1.2.2 tron 160 1.1.2.2 tron static __inline bus_addr_t _bus_virt_to_bus(struct pmap *, vaddr_t); 161 1.1.2.2 tron #define _BUS_VIRT_TO_BUS(pm, va) _bus_virt_to_bus((pm), (va)) 162 1.1.2.2 tron 163 1.1.2.2 tron static __inline bus_addr_t 164 1.1.2.2 tron _bus_virt_to_bus(struct pmap *pm, vaddr_t va) 165 1.1.2.2 tron { 166 1.1.2.2 tron paddr_t pa; 167 1.1.2.2 tron 168 1.1.2.2 tron if (!pmap_extract(pm, va, &pa)) { 169 1.1.2.2 tron panic("_bus_virt_to_bus"); 170 1.1.2.2 tron } 171 1.1.2.2 tron 172 1.1.2.2 tron return _BUS_PHYS_TO_BUS(pa); 173 1.1.2.2 tron } 174 1.1.2.2 tron #endif /* !defined(_BUS_VIRT_TO_BUS) */ 175 1.1.2.2 tron 176 1.1.2.3 tron /* 177 1.1.2.3 tron * by default, the end address of RAM visible on bus is the same as the 178 1.1.2.3 tron * largest physical address. 179 1.1.2.3 tron */ 180 1.1.2.3 tron #ifndef _BUS_AVAIL_END 181 1.1.2.3 tron #define _BUS_AVAIL_END (avail_end) 182 1.1.2.3 tron #endif 183 1.1.2.3 tron 184 1.1.2.3 tron 185 1.1.2.2 tron #endif /* !defined(_X86_BUS_PRIVATE_H_) */ 186
Indexes created Thu Oct 23 22:10:10 GMT 2025