1 /* $NetBSD: neptune.c,v 1.10 2003/07/15 01:44:52 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Minoura Makoto. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. The name of the author may not be used to endorse or promote products 23 * derived from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Neptune-X -- X68k-ISA Bus Bridge 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: neptune.c,v 1.10 2003/07/15 01:44:52 lukem Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 #include <sys/malloc.h> 49 50 #include <machine/bus.h> 51 #include <machine/cpu.h> 52 #include <machine/frame.h> 53 54 #include <arch/x68k/dev/intiovar.h> 55 #include <arch/x68k/dev/neptunevar.h> 56 57 /* bus_space stuff */ 58 static int neptune_bus_space_map __P((bus_space_tag_t, bus_addr_t, bus_size_t, 59 int, bus_space_handle_t*)); 60 static void neptune_bus_space_unmap __P((bus_space_tag_t, 61 bus_space_handle_t, bus_size_t)); 62 static int neptune_bus_space_subregion __P((bus_space_tag_t, bus_space_handle_t, 63 bus_size_t, bus_size_t, 64 bus_space_handle_t*)); 65 66 static struct x68k_bus_space neptune_bus = { 67 #if 0 68 X68K_NEPUTUNE_BUS, 69 #endif 70 neptune_bus_space_map, neptune_bus_space_unmap, 71 neptune_bus_space_subregion, 72 x68k_bus_space_alloc, x68k_bus_space_free, 73 }; 74 75 76 static int neptune_match __P((struct device *, struct cfdata *, void *)); 77 static void neptune_attach __P((struct device *, struct device *, void *)); 78 static int neptune_search __P((struct device *, struct cfdata *cf, void *)); 79 static int neptune_print __P((void *, const char *)); 80 81 CFATTACH_DECL(neptune, sizeof(struct neptune_softc), 82 neptune_match, neptune_attach, NULL, NULL); 83 84 static int 85 neptune_match(parent, cf, aux) 86 struct device *parent; 87 struct cfdata *cf; 88 void *aux; 89 { 90 struct intio_attach_args *ia = aux; 91 92 if (strcmp(ia->ia_name, "neptune") != 0) 93 return 0; 94 95 ia->ia_size = 0x400; 96 if (intio_map_allocate_region (parent, ia, INTIO_MAP_TESTONLY)) 97 return 0; 98 99 /* Neptune is a virtual device. Always there. */ 100 101 return (1); 102 } 103 104 105 static void 106 neptune_attach(parent, self, aux) 107 struct device *parent, *self; 108 void *aux; 109 { 110 struct neptune_softc *sc = (struct neptune_softc *)self; 111 struct intio_attach_args *ia = aux; 112 struct neptune_attach_args na; 113 int r; 114 struct cfdata *cf; 115 116 ia->ia_size = 0x400; 117 r = intio_map_allocate_region (parent, ia, INTIO_MAP_ALLOCATE); 118 #ifdef DIAGNOSTIC 119 if (r) 120 panic ("IO map for Neptune corruption??"); 121 #endif 122 123 sc->sc_bst = malloc(sizeof(struct x68k_bus_space), M_DEVBUF, M_NOWAIT); 124 if (sc->sc_bst == NULL) 125 panic("neptune_attach: can't allocate bus_space structure"); 126 *sc->sc_bst = neptune_bus; 127 sc->sc_bst->x68k_bus_device = self; 128 129 sc->sc_addr = (vaddr_t) (ia->ia_addr - PHYS_INTIODEV + intiobase); 130 131 na.na_bst = sc->sc_bst; 132 na.na_intr = ia->ia_intr; 133 134 cf = config_search (neptune_search, self, &na); 135 if (cf) { 136 printf (": Neptune-X ISA bridge\n"); 137 config_attach(self, cf, &na, neptune_print); 138 } else { 139 printf (": no device found.\n"); 140 intio_map_free_region(parent, ia); 141 } 142 } 143 144 static int 145 neptune_search(parent, cf, aux) 146 struct device *parent; 147 struct cfdata *cf; 148 void *aux; 149 { 150 struct neptune_attach_args *na = aux; 151 152 na->na_addr = cf->neptune_cf_addr; 153 154 return config_match(parent, cf, na); 155 } 156 157 static int 158 neptune_print(aux, name) 159 void *aux; 160 const char *name; 161 { 162 struct neptune_attach_args *na = aux; 163 164 /* if (na->na_addr > 0) */ 165 aprint_normal (" addr 0x%06x", na->na_addr); 166 167 return (QUIET); 168 } 169 170 171 /* 172 * neptune bus space stuff. 173 */ 174 static int 175 neptune_bus_space_map(t, bpa, size, flags, bshp) 176 bus_space_tag_t t; 177 bus_addr_t bpa; 178 bus_size_t size; 179 int flags; 180 bus_space_handle_t *bshp; 181 { 182 vaddr_t start = ((struct neptune_softc*) ((struct x68k_bus_space*) t) 183 ->x68k_bus_device)->sc_addr; 184 185 /* 186 * Neptune bus is mapped permanently. 187 */ 188 *bshp = (bus_space_handle_t) ((u_int)start + ((u_int)bpa - 0x200) * 2); 189 190 if (badaddr((caddr_t)*bshp)) { 191 return 1; 192 } 193 194 *bshp |= 0x80000000; /* higher byte (= even address) only */ 195 196 return (0); 197 } 198 199 static void 200 neptune_bus_space_unmap(t, bsh, size) 201 bus_space_tag_t t; 202 bus_space_handle_t bsh; 203 bus_size_t size; 204 { 205 return; 206 } 207 208 static int 209 neptune_bus_space_subregion(t, bsh, offset, size, nbshp) 210 bus_space_tag_t t; 211 bus_space_handle_t bsh; 212 bus_size_t offset, size; 213 bus_space_handle_t *nbshp; 214 { 215 216 *nbshp = bsh + offset*2; 217 return (0); 218 } 219