vmevar.h revision 1.7
1 /* $NetBSD: vmevar.h,v 1.7 2000/02/25 10:33:12 drochner 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 void *(*vct_int_establish) __P((void *, vme_intr_handle_t, int, 75 int (*)(void *), void *)); 76 void (*vct_int_disestablish) __P((void *, void *)); 77 78 int (*vct_dmamap_create) __P((void *, vme_size_t, 79 vme_am_t, vme_datasize_t, vme_swap_t, 80 int, vme_size_t, vme_addr_t, 81 int, bus_dmamap_t *)); 82 void (*vct_dmamap_destroy) __P((void *, bus_dmamap_t)); 83 84 /* 85 * This sucks: we have to give all the VME specific arguments 86 * twice - for dmamem_alloc and for dmamem_create. Perhaps 87 * give a "dmamap" argument here, meaning: "allocate memory which 88 * can be accessed through this DMA map". 89 */ 90 int (*vct_dmamem_alloc) __P((void *, vme_size_t, 91 vme_am_t, vme_datasize_t, vme_swap_t, 92 bus_dma_segment_t *, int, int *, int)); 93 void (*vct_dmamem_free) __P((void *, bus_dma_segment_t *, int)); 94 95 struct vmebus_softc *bus; 96 } *vme_chipset_tag_t; 97 98 /* 99 * map / unmap: map VME address ranges into kernel address space 100 * XXX should have mapping to CPU only to allow user mmap() without 101 * wasting kvm 102 */ 103 #define vme_space_map(vc, vmeaddr, len, am, datasize, swap, tag, handle, resc) \ 104 (*((vc)->vct_map))((vc)->cookie, (vmeaddr), (len), (am), (datasize), \ 105 (swap), (tag), (handle), (resc)) 106 #define vme_space_unmap(vc, resc) \ 107 (*((vc)->vct_unmap))((vc)->cookie, (resc)) 108 109 /* 110 * probe: check readability or call callback 111 */ 112 #define vme_probe(vc, vmeaddr, len, am, datasize, callback, cbarg) \ 113 (*((vc)->vct_probe))((vc)->cookie, (vmeaddr), (len), (am), (datasize), \ 114 (callback), (cbarg)) 115 116 /* 117 * install / deinstall VME interrupt handler 118 */ 119 #define vme_intr_map(vc, level, vector, handlep) \ 120 (*((vc)->vct_int_map))((vc)->cookie, (level), (vector), (handlep)) 121 #define vme_intr_establish(vc, handle, prio, func, arg) \ 122 (*((vc)->vct_int_establish))((vc)->cookie, \ 123 (handle), (prio), (func), (arg)) 124 #define vme_intr_disestablish(vc, cookie) \ 125 (*((vc)->vct_int_unmap))((vc)->cookie, (cookie)) 126 127 /* 128 * create DMA map (which is later used by bus independant 129 * DMA functions) 130 */ 131 #define vme_dmamap_create(vc, size, am, datasize, swap, nsegs, segsz, bound, \ 132 flags, map) \ 133 (*((vc)->vct_dmamap_create))((vc)->cookie, (size), (am), (datasize), (swap), \ 134 (nsegs), (segsz), (bound), (flags), (map)) 135 #define vme_dmamap_destroy(vc, map) \ 136 (*((vc)->vct_dmamap_destroy))((vc)->cookie, (map)) 137 138 /* 139 * allocate memory directly accessible from VME 140 */ 141 #define vme_dmamem_alloc(vc, size, am, datasize, swap, \ 142 segs, nsegs, rsegs, flags) \ 143 (*((vc)->vct_dmamem_alloc))((vc)->cookie, (size), (am), (datasize), (swap), \ 144 (segs), (nsegs), (rsegs), (flags)) 145 #define vme_dmamem_free(vc, segs, nsegs) \ 146 (*((vc)->vct_dmamem_free))((vc)->cookie, (segs), (nsegs)) 147 148 /* 149 * autoconfiguration data structures 150 */ 151 152 struct vme_attach_args; 153 typedef void (*vme_slaveconf_callback) __P((struct device *, 154 struct vme_attach_args *)); 155 156 struct vmebus_attach_args { 157 vme_chipset_tag_t va_vct; 158 bus_dma_tag_t va_bdt; 159 160 vme_slaveconf_callback va_slaveconfig; 161 }; 162 163 struct extent; 164 165 struct vmebus_softc { 166 struct device sc_dev; 167 168 vme_chipset_tag_t sc_vct; 169 bus_dma_tag_t sc_bdt; 170 171 vme_slaveconf_callback slaveconfig; 172 173 struct extent *vme32ext, *vme24ext, *vme16ext; 174 }; 175 176 #define VME_MAXCFRANGES 3 177 178 struct vme_range { 179 vme_addr_t offset; 180 vme_size_t size; 181 vme_am_t am; 182 }; 183 184 struct vme_attach_args { 185 vme_chipset_tag_t va_vct; 186 bus_dma_tag_t va_bdt; 187 188 int ivector, ilevel; 189 int numcfranges; 190 struct vme_range r[VME_MAXCFRANGES]; 191 }; 192 193 /* 194 * address space accounting 195 */ 196 int _vme_space_alloc __P((struct vmebus_softc *, vme_addr_t, 197 vme_size_t, vme_am_t)); 198 void _vme_space_free __P((struct vmebus_softc *, vme_addr_t, 199 vme_size_t, vme_am_t)); 200 int _vme_space_get __P((struct vmebus_softc *, vme_size_t, vme_am_t, 201 u_long, vme_addr_t*)); 202 203 #define vme_space_alloc(tag, addr, size, ams) \ 204 _vme_space_alloc(tag->bus, addr, size, ams) 205 206 #define vme_space_free(tag, addr, size, ams) \ 207 _vme_space_free(tag->bus, addr, size, ams) 208 209 #define vme_space_get(tag, size, ams, align, addr) \ 210 _vme_space_get(tag->bus, size, ams, align, addr) 211 212 #endif /* KERNEL */ 213 #endif /* _vmevar_h_ */ 214
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