vmevar.h revision 1.9
1 /* $NetBSD: vmevar.h,v 1.9 2000/06/25 00:23:13 pk Exp $ */ 2 3 /* 4 * Copyright (c) 1999 5 * Matthias Drochner. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 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. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 */ 30 31 #ifndef _VMEVAR_H_ 32 #define _VMEVAR_H_ 33 34 typedef u_int32_t vme_addr_t, vme_size_t; 35 typedef int vme_am_t; 36 37 typedef enum { 38 VME_D8 = 1, 39 VME_D16 = 2, 40 VME_D32 = 4 41 } vme_datasize_t; 42 43 typedef int vme_swap_t; /* hardware swap capabilities, 44 placeholder - contents to be specified */ 45 46 #ifdef _KERNEL 47 48 /* 49 * Generic placeholder for any resources needed for a mapping, 50 * overloaded by bus interface driver 51 */ 52 typedef void *vme_mapresc_t; 53 54 /* Describes interrupt mapping, opaque to MI drivers */ 55 typedef void *vme_intr_handle_t; 56 57 /* 58 * Tag structure passed to VME bus devices; 59 * contains the bus dependent functions, accessed via macros below. 60 */ 61 typedef struct vme_chipset_tag { 62 void *cookie; 63 64 int (*vct_map) __P((void *, vme_addr_t, vme_size_t, 65 vme_am_t, vme_datasize_t, vme_swap_t, 66 bus_space_tag_t *, bus_space_handle_t *, 67 vme_mapresc_t *)); 68 void (*vct_unmap) __P((void *, vme_mapresc_t)); 69 70 int (*vct_probe) __P((void *, vme_addr_t, vme_size_t, 71 vme_am_t, vme_datasize_t, 72 int (*)(void *, bus_space_tag_t, bus_space_handle_t), 73 void *)); 74 75 int (*vct_int_map) __P((void *, int, int, vme_intr_handle_t *)); 76 const struct evcnt *(*vct_int_evcnt) __P((void *, vme_intr_handle_t)); 77 void *(*vct_int_establish) __P((void *, vme_intr_handle_t, int, 78 int (*)(void *), void *)); 79 void (*vct_int_disestablish) __P((void *, void *)); 80 81 int (*vct_dmamap_create) __P((void *, vme_size_t, 82 vme_am_t, vme_datasize_t, vme_swap_t, 83 int, vme_size_t, vme_addr_t, 84 int, bus_dmamap_t *)); 85 void (*vct_dmamap_destroy) __P((void *, bus_dmamap_t)); 86 87 /* 88 * This sucks: we have to give all the VME specific arguments 89 * twice - for dmamem_alloc and for dmamem_create. Perhaps 90 * give a "dmamap" argument here, meaning: "allocate memory which 91 * can be accessed through this DMA map". 92 */ 93 int (*vct_dmamem_alloc) __P((void *, vme_size_t, 94 vme_am_t, vme_datasize_t, vme_swap_t, 95 bus_dma_segment_t *, int, int *, int)); 96 void (*vct_dmamem_free) __P((void *, bus_dma_segment_t *, int)); 97 98 struct vmebus_softc *bus; 99 } *vme_chipset_tag_t; 100 101 /* 102 * map / unmap: map VME address ranges into kernel address space 103 * XXX should have mapping to CPU only to allow user mmap() without 104 * wasting kvm 105 */ 106 #define vme_space_map(vc, vmeaddr, len, am, datasize, swap, tag, handle, resc) \ 107 (*((vc)->vct_map))((vc)->cookie, (vmeaddr), (len), (am), (datasize), \ 108 (swap), (tag), (handle), (resc)) 109 #define vme_space_unmap(vc, resc) \ 110 (*((vc)->vct_unmap))((vc)->cookie, (resc)) 111 112 /* 113 * probe: check readability or call callback. 114 */ 115 #define vme_probe(vc, vmeaddr, len, am, datasize, callback, cbarg) \ 116 (*((vc)->vct_probe))((vc)->cookie, (vmeaddr), (len), (am), \ 117 (datasize), (callback), (cbarg)) 118 119 /* 120 * install / deinstall VME interrupt handler. 121 */ 122 #define vme_intr_map(vc, level, vector, handlep) \ 123 (*((vc)->vct_int_map))((vc)->cookie, (level), (vector), (handlep)) 124 #define vme_intr_evcnt(vc, handle) \ 125 (*((vc)->vct_int_evcnt))((vc)->cookie, (handle)) 126 #define vme_intr_establish(vc, handle, prio, func, arg) \ 127 (*((vc)->vct_int_establish))((vc)->cookie, \ 128 (handle), (prio), (func), (arg)) 129 #define vme_intr_disestablish(vc, cookie) \ 130 (*((vc)->vct_int_unmap))((vc)->cookie, (cookie)) 131 132 /* 133 * Create DMA map (which is later used by bus independent DMA functions). 134 */ 135 #define vme_dmamap_create(vc, size, am, datasize, swap, nsegs, segsz, bound, \ 136 flags, map) \ 137 (*((vc)->vct_dmamap_create))((vc)->cookie, (size), (am), (datasize), \ 138 (swap), (nsegs), (segsz), (bound), (flags), (map)) 139 #define vme_dmamap_destroy(vc, map) \ 140 (*((vc)->vct_dmamap_destroy))((vc)->cookie, (map)) 141 142 /* 143 * Allocate memory directly accessible from VME. 144 */ 145 #define vme_dmamem_alloc(vc, size, am, datasize, swap, \ 146 segs, nsegs, rsegs, flags) \ 147 (*((vc)->vct_dmamem_alloc))((vc)->cookie, (size), (am), (datasize), (swap), \ 148 (segs), (nsegs), (rsegs), (flags)) 149 #define vme_dmamem_free(vc, segs, nsegs) \ 150 (*((vc)->vct_dmamem_free))((vc)->cookie, (segs), (nsegs)) 151 152 /* 153 * Autoconfiguration data structures. 154 */ 155 156 struct vme_attach_args; 157 typedef void (*vme_slaveconf_callback) __P((struct device *, 158 struct vme_attach_args *)); 159 160 struct vmebus_attach_args { 161 vme_chipset_tag_t va_vct; 162 bus_dma_tag_t va_bdt; 163 164 vme_slaveconf_callback va_slaveconfig; 165 }; 166 167 struct extent; 168 169 struct vmebus_softc { 170 struct device sc_dev; 171 172 vme_chipset_tag_t sc_vct; 173 bus_dma_tag_t sc_bdt; 174 175 vme_slaveconf_callback slaveconfig; 176 177 struct extent *vme32ext, *vme24ext, *vme16ext; 178 }; 179 180 #define VME_MAXCFRANGES 3 181 182 struct vme_range { 183 vme_addr_t offset; 184 vme_size_t size; 185 vme_am_t am; 186 }; 187 188 struct vme_attach_args { 189 vme_chipset_tag_t va_vct; 190 bus_dma_tag_t va_bdt; 191 192 int ivector, ilevel; 193 int numcfranges; 194 struct vme_range r[VME_MAXCFRANGES]; 195 }; 196 197 /* 198 * Address space accounting. 199 */ 200 int _vme_space_alloc __P((struct vmebus_softc *, vme_addr_t, 201 vme_size_t, vme_am_t)); 202 void _vme_space_free __P((struct vmebus_softc *, vme_addr_t, 203 vme_size_t, vme_am_t)); 204 int _vme_space_get __P((struct vmebus_softc *, vme_size_t, vme_am_t, 205 u_long, vme_addr_t*)); 206 207 #define vme_space_alloc(tag, addr, size, ams) \ 208 _vme_space_alloc(tag->bus, addr, size, ams) 209 210 #define vme_space_free(tag, addr, size, ams) \ 211 _vme_space_free(tag->bus, addr, size, ams) 212 213 #define vme_space_get(tag, size, ams, align, addr) \ 214 _vme_space_get(tag->bus, size, ams, align, addr) 215 216 #endif /* KERNEL */ 217 #endif /* _VMEVAR_H_ */ 218
Indexes created Wed Sep 24 14:09:57 GMT 2025