vmevar.h revision 1.8
1 /* $NetBSD: vmevar.h,v 1.8 2000/06/04 19:15:16 cgd 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 /* generic placeholder for any ressources needed for a mapping, 49 overloaded by bus interface driver */ 50 typedef void *vme_mapresc_t; 51 52 /* describes interrupt mapping, overloaded by bus interface driver */ 53 typedef void *vme_intr_handle_t; 54 55 /* 56 * tag structure passed to VME bus devices, 57 * contains the bus dependant functions, accessed via macros below 58 */ 59 typedef struct vme_chipset_tag { 60 void *cookie; 61 62 int (*vct_map) __P((void *, vme_addr_t, vme_size_t, 63 vme_am_t, vme_datasize_t, vme_swap_t, 64 bus_space_tag_t *, bus_space_handle_t *, 65 vme_mapresc_t *)); 66 void (*vct_unmap) __P((void *, vme_mapresc_t)); 67 68 int (*vct_probe) __P((void *, vme_addr_t, vme_size_t, 69 vme_am_t, vme_datasize_t, 70 int (*)(void *, bus_space_tag_t, bus_space_handle_t), 71 void *)); 72 73 int (*vct_int_map) __P((void *, int, int, vme_intr_handle_t *)); 74 const struct evcnt *(*vct_int_evcnt) __P((void *, vme_intr_handle_t)); 75 void *(*vct_int_establish) __P((void *, vme_intr_handle_t, int, 76 int (*)(void *), void *)); 77 void (*vct_int_disestablish) __P((void *, void *)); 78 79 int (*vct_dmamap_create) __P((void *, vme_size_t, 80 vme_am_t, vme_datasize_t, vme_swap_t, 81 int, vme_size_t, vme_addr_t, 82 int, bus_dmamap_t *)); 83 void (*vct_dmamap_destroy) __P((void *, bus_dmamap_t)); 84 85 /* 86 * This sucks: we have to give all the VME specific arguments 87 * twice - for dmamem_alloc and for dmamem_create. Perhaps 88 * give a "dmamap" argument here, meaning: "allocate memory which 89 * can be accessed through this DMA map". 90 */ 91 int (*vct_dmamem_alloc) __P((void *, vme_size_t, 92 vme_am_t, vme_datasize_t, vme_swap_t, 93 bus_dma_segment_t *, int, int *, int)); 94 void (*vct_dmamem_free) __P((void *, bus_dma_segment_t *, int)); 95 96 struct vmebus_softc *bus; 97 } *vme_chipset_tag_t; 98 99 /* 100 * map / unmap: map VME address ranges into kernel address space 101 * XXX should have mapping to CPU only to allow user mmap() without 102 * wasting kvm 103 */ 104 #define vme_space_map(vc, vmeaddr, len, am, datasize, swap, tag, handle, resc) \ 105 (*((vc)->vct_map))((vc)->cookie, (vmeaddr), (len), (am), (datasize), \ 106 (swap), (tag), (handle), (resc)) 107 #define vme_space_unmap(vc, resc) \ 108 (*((vc)->vct_unmap))((vc)->cookie, (resc)) 109 110 /* 111 * probe: check readability or call callback 112 */ 113 #define vme_probe(vc, vmeaddr, len, am, datasize, callback, cbarg) \ 114 (*((vc)->vct_probe))((vc)->cookie, (vmeaddr), (len), (am), (datasize), \ 115 (callback), (cbarg)) 116 117 /* 118 * install / deinstall VME interrupt handler 119 */ 120 #define vme_intr_map(vc, level, vector, handlep) \ 121 (*((vc)->vct_int_map))((vc)->cookie, (level), (vector), (handlep)) 122 #define vme_intr_evcnt(vc, handle) \ 123 (*((vc)->vct_int_evcnt))((vc)->cookie, (handle)) 124 #define vme_intr_establish(vc, handle, prio, func, arg) \ 125 (*((vc)->vct_int_establish))((vc)->cookie, \ 126 (handle), (prio), (func), (arg)) 127 #define vme_intr_disestablish(vc, cookie) \ 128 (*((vc)->vct_int_unmap))((vc)->cookie, (cookie)) 129 130 /* 131 * create DMA map (which is later used by bus independant 132 * DMA functions) 133 */ 134 #define vme_dmamap_create(vc, size, am, datasize, swap, nsegs, segsz, bound, \ 135 flags, map) \ 136 (*((vc)->vct_dmamap_create))((vc)->cookie, (size), (am), (datasize), (swap), \ 137 (nsegs), (segsz), (bound), (flags), (map)) 138 #define vme_dmamap_destroy(vc, map) \ 139 (*((vc)->vct_dmamap_destroy))((vc)->cookie, (map)) 140 141 /* 142 * allocate memory directly accessible from VME 143 */ 144 #define vme_dmamem_alloc(vc, size, am, datasize, swap, \ 145 segs, nsegs, rsegs, flags) \ 146 (*((vc)->vct_dmamem_alloc))((vc)->cookie, (size), (am), (datasize), (swap), \ 147 (segs), (nsegs), (rsegs), (flags)) 148 #define vme_dmamem_free(vc, segs, nsegs) \ 149 (*((vc)->vct_dmamem_free))((vc)->cookie, (segs), (nsegs)) 150 151 /* 152 * autoconfiguration data structures 153 */ 154 155 struct vme_attach_args; 156 typedef void (*vme_slaveconf_callback) __P((struct device *, 157 struct vme_attach_args *)); 158 159 struct vmebus_attach_args { 160 vme_chipset_tag_t va_vct; 161 bus_dma_tag_t va_bdt; 162 163 vme_slaveconf_callback va_slaveconfig; 164 }; 165 166 struct extent; 167 168 struct vmebus_softc { 169 struct device sc_dev; 170 171 vme_chipset_tag_t sc_vct; 172 bus_dma_tag_t sc_bdt; 173 174 vme_slaveconf_callback slaveconfig; 175 176 struct extent *vme32ext, *vme24ext, *vme16ext; 177 }; 178 179 #define VME_MAXCFRANGES 3 180 181 struct vme_range { 182 vme_addr_t offset; 183 vme_size_t size; 184 vme_am_t am; 185 }; 186 187 struct vme_attach_args { 188 vme_chipset_tag_t va_vct; 189 bus_dma_tag_t va_bdt; 190 191 int ivector, ilevel; 192 int numcfranges; 193 struct vme_range r[VME_MAXCFRANGES]; 194 }; 195 196 /* 197 * address space accounting 198 */ 199 int _vme_space_alloc __P((struct vmebus_softc *, vme_addr_t, 200 vme_size_t, vme_am_t)); 201 void _vme_space_free __P((struct vmebus_softc *, vme_addr_t, 202 vme_size_t, vme_am_t)); 203 int _vme_space_get __P((struct vmebus_softc *, vme_size_t, vme_am_t, 204 u_long, vme_addr_t*)); 205 206 #define vme_space_alloc(tag, addr, size, ams) \ 207 _vme_space_alloc(tag->bus, addr, size, ams) 208 209 #define vme_space_free(tag, addr, size, ams) \ 210 _vme_space_free(tag->bus, addr, size, ams) 211 212 #define vme_space_get(tag, size, ams, align, addr) \ 213 _vme_space_get(tag->bus, size, ams, align, addr) 214 215 #endif /* KERNEL */ 216 #endif /* _vmevar_h_ */ 217
Indexes created Wed Sep 24 15:09:51 GMT 2025