neptune.c revision 1.1.2.3
1 /* $NetBSD: neptune.c,v 1.1.2.3 1998/12/28 14:30:21 minoura Exp $ */ 2 3 /* 4 * 5 * Copyright (c) 1998 NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Minoura Makoto. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Charles D. Cranor and 22 * Washington University. 23 * 4. The name of the author may not be used to endorse or promote products 24 * derived from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 27 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 28 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 29 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 30 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 31 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 35 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * Neptune-X -- X68k-ISA Bus Bridge 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 #include <sys/malloc.h> 46 47 #include <machine/bus.h> 48 #include <machine/cpu.h> 49 #include <machine/frame.h> 50 51 #include <arch/x68k/dev/intiovar.h> 52 #include <arch/x68k/dev/neptunevar.h> 53 54 55 /* 56 * We currently implement only some, to support NE2000 and clones. 57 */ 58 59 #define neptune_bus_space_read_4 ((u_int32_t(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t))) neptune_dummy) 60 #define neptune_bus_space_read_multi_4 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t*, bus_size_t))) neptune_dummy) 61 #define neptune_bus_space_read_region_1 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t*, bus_size_t))) neptune_dummy) 62 #define neptune_bus_space_read_region_2 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t*, bus_size_t))) neptune_dummy) 63 #define neptune_bus_space_read_region_4 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t*, bus_size_t))) neptune_dummy) 64 #define neptune_bus_space_write_4 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t))) neptune_dummy) 65 #define neptune_bus_space_write_multi_4 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t*, bus_size_t))) neptune_dummy) 66 #define neptune_bus_space_write_region_1 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t*, bus_size_t))) neptune_dummy) 67 #define neptune_bus_space_write_region_2 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t*, bus_size_t))) neptune_dummy) 68 #define neptune_bus_space_write_region_4 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t*, bus_size_t))) neptune_dummy) 69 #define neptune_bus_space_set_region_1 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int8_t, bus_size_t))) neptune_dummy) 70 #define neptune_bus_space_set_region_2 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int16_t, bus_size_t))) neptune_dummy) 71 #define neptune_bus_space_set_region_4 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, u_int32_t, bus_size_t))) neptune_dummy) 72 #define neptune_bus_space_copy_region_1 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t))) neptune_dummy) 73 #define neptune_bus_space_copy_region_2 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t))) neptune_dummy) 74 #define neptune_bus_space_copy_region_4 ((void(*) __P((bus_space_tag_t, bus_space_handle_t, bus_size_t, bus_space_handle_t, bus_size_t, bus_size_t))) neptune_dummy) 75 76 77 static int neptune_bus_space_map __P((bus_space_tag_t, bus_addr_t, bus_size_t, 78 int, bus_space_handle_t*)); 79 static void neptune_bus_space_unmap __P((bus_space_tag_t, 80 bus_space_handle_t, bus_size_t)); 81 static int neptune_bus_space_subregion __P((bus_space_tag_t, bus_space_handle_t, 82 bus_size_t, bus_size_t, 83 bus_space_handle_t*)); 84 u_int8_t neptune_bus_space_read_1 __P((bus_space_tag_t, 85 bus_space_handle_t, bus_size_t)); 86 u_int16_t neptune_bus_space_read_2 __P((bus_space_tag_t, 87 bus_space_handle_t, bus_size_t)); 88 void neptune_bus_space_write_1 __P((bus_space_tag_t, 89 bus_space_handle_t, bus_size_t, u_int8_t)); 90 void neptune_bus_space_write_2 __P((bus_space_tag_t, 91 bus_space_handle_t, bus_size_t, u_int16_t)); 92 void neptune_bus_space_read_multi_1 __P((bus_space_tag_t, bus_space_handle_t, 93 bus_size_t, u_int8_t *, bus_size_t)); 94 void neptune_bus_space_read_multi_2 __P((bus_space_tag_t, bus_space_handle_t, 95 bus_size_t, u_int16_t *, bus_size_t)); 96 void neptune_bus_space_write_multi_1 __P((bus_space_tag_t, bus_space_handle_t, 97 bus_size_t, u_int8_t *, bus_size_t)); 98 void neptune_bus_space_write_multi_2 __P((bus_space_tag_t, bus_space_handle_t, 99 bus_size_t, u_int16_t *, bus_size_t)); 100 101 102 void neptune_dummy __P((void)); 103 104 static struct x68k_bus_space neptune_bus = { 105 #if 0 106 X68K_NEPUTUNE_BUS, 107 #endif 108 neptune_bus_space_map, neptune_bus_space_unmap, 109 neptune_bus_space_subregion, 110 x68k_bus_space_alloc, x68k_bus_space_free, 111 112 neptune_bus_space_read_1, 113 neptune_bus_space_read_2, 114 neptune_bus_space_read_4, 115 neptune_bus_space_read_multi_1, 116 neptune_bus_space_read_multi_2, 117 neptune_bus_space_read_multi_4, 118 neptune_bus_space_read_region_1, 119 neptune_bus_space_read_region_2, 120 neptune_bus_space_read_region_4, 121 122 neptune_bus_space_write_1, 123 neptune_bus_space_write_2, 124 neptune_bus_space_write_4, 125 neptune_bus_space_write_multi_1, 126 neptune_bus_space_write_multi_2, 127 neptune_bus_space_write_multi_4, 128 neptune_bus_space_write_region_1, 129 neptune_bus_space_write_region_2, 130 neptune_bus_space_write_region_4, 131 132 neptune_bus_space_set_region_1, 133 neptune_bus_space_set_region_2, 134 neptune_bus_space_set_region_4, 135 neptune_bus_space_copy_region_1, 136 neptune_bus_space_copy_region_2, 137 neptune_bus_space_copy_region_4 138 }; 139 140 void 141 neptune_dummy (void) 142 { 143 panic ("neptune: Unimplemented bus_space operation"); 144 } 145 146 147 static int neptune_match __P((struct device *, struct cfdata *, void *)); 148 static void neptune_attach __P((struct device *, struct device *, void *)); 149 static int neptune_search __P((struct device *, struct cfdata *cf, void *)); 150 static int neptune_print __P((void *, const char *)); 151 152 struct cfattach neptune_ca = { 153 sizeof(struct neptune_softc), neptune_match, neptune_attach 154 }; 155 156 static int 157 neptune_match(parent, cf, aux) 158 struct device *parent; 159 struct cfdata *cf; 160 void *aux; 161 { 162 struct intio_attach_args *ia = aux; 163 164 if (strcmp(ia->ia_name, "neptune") != 0) 165 return 0; 166 167 ia->ia_size = 0x400; 168 if (intio_map_allocate_region (parent, ia, INTIO_MAP_TESTONLY)) 169 return 0; 170 171 /* Neptune is a virtual device. Always there. */ 172 173 return (1); 174 } 175 176 177 static void 178 neptune_attach(parent, self, aux) 179 struct device *parent, *self; 180 void *aux; 181 { 182 struct neptune_softc *sc = (struct neptune_softc *)self; 183 struct intio_attach_args *ia = aux; 184 struct neptune_attach_args na; 185 int r; 186 struct cfdata *cf; 187 188 ia->ia_size = 0x400; 189 r = intio_map_allocate_region (parent, ia, INTIO_MAP_ALLOCATE); 190 #ifdef DIAGNOSTIC 191 if (r) 192 panic ("IO map for Neptune corruption??"); 193 #endif 194 195 sc->sc_bst = malloc(sizeof(struct x68k_bus_space), M_DEVBUF, M_NOWAIT); 196 if (sc->sc_bst == NULL) 197 panic("neptune_attach: can't allocate bus_space structure"); 198 *sc->sc_bst = neptune_bus; 199 sc->sc_bst->x68k_bus_device = self; 200 201 sc->sc_addr = (vaddr_t) (ia->ia_addr - PHYS_INTIODEV + intiobase); 202 203 na.na_bst = sc->sc_bst; 204 na.na_intr = ia->ia_intr; 205 206 cf = config_search (neptune_search, self, &na); 207 if (cf) { 208 printf (": Neptune-X ISA bridge\n"); 209 config_attach(self, cf, &na, neptune_print); 210 } else { 211 printf (": no device found.\n"); 212 intio_map_free_region(parent, ia); 213 } 214 } 215 216 static int 217 neptune_search(parent, cf, aux) 218 struct device *parent; 219 struct cfdata *cf; 220 void *aux; 221 { 222 struct neptune_attach_args *na = aux; 223 224 na->na_addr = cf->neptune_cf_addr; 225 226 return (*cf->cf_attach->ca_match)(parent, cf, na); 227 } 228 229 static int 230 neptune_print(aux, name) 231 void *aux; 232 const char *name; 233 { 234 struct neptune_attach_args *na = aux; 235 236 /* if (na->na_addr > 0) */ 237 printf (" addr 0x%06x", na->na_addr); 238 239 return (QUIET); 240 } 241 242 243 /* 244 * neptune bus space stuff. 245 */ 246 static int 247 neptune_bus_space_map(t, bpa, size, flags, bshp) 248 bus_space_tag_t t; 249 bus_addr_t bpa; 250 bus_size_t size; 251 int flags; 252 bus_space_handle_t *bshp; 253 { 254 vaddr_t start = ((struct neptune_softc*) ((struct x68k_bus_space*) t) 255 ->x68k_bus_device)->sc_addr; 256 257 /* 258 * Neptune bus is mapped permanently. 259 */ 260 *bshp = (bus_space_handle_t) ((u_int)start + ((u_int)bpa - 0x200) * 2); 261 262 if (badaddr(*bshp)) { 263 printf ("XXX\n"); 264 return 1; 265 } 266 267 return (0); 268 } 269 270 static void 271 neptune_bus_space_unmap(t, bsh, size) 272 bus_space_tag_t t; 273 bus_space_handle_t bsh; 274 bus_size_t size; 275 { 276 return; 277 } 278 279 static int 280 neptune_bus_space_subregion(t, bsh, offset, size, nbshp) 281 bus_space_tag_t t; 282 bus_space_handle_t bsh; 283 bus_size_t offset, size; 284 bus_space_handle_t *nbshp; 285 { 286 287 *nbshp = bsh + offset*2; 288 return (0); 289 } 290 291 u_int8_t 292 neptune_bus_space_read_1(t, bsh, offset) 293 bus_space_tag_t t; 294 bus_space_handle_t bsh; 295 bus_size_t offset; 296 { 297 return (*((volatile u_int8_t *) (bsh + offset*2))); 298 } 299 300 u_int16_t 301 neptune_bus_space_read_2(t, bsh, offset) 302 bus_space_tag_t t; 303 bus_space_handle_t bsh; 304 bus_size_t offset; 305 { 306 return (*((volatile u_int16_t *) (bsh + offset*2))); 307 } 308 309 void 310 neptune_bus_space_write_1(t, bsh, offset, value) 311 bus_space_tag_t t; 312 bus_space_handle_t bsh; 313 bus_size_t offset; 314 u_int8_t value; 315 { 316 *(volatile u_int8_t *) (bsh + offset*2) = value; 317 } 318 319 void 320 neptune_bus_space_write_2(t, bsh, offset, value) 321 bus_space_tag_t t; 322 bus_space_handle_t bsh; 323 bus_size_t offset; 324 u_int16_t value; 325 { 326 *(volatile u_int16_t *) (bsh + offset*2) = value; 327 } 328 329 void 330 neptune_bus_space_read_multi_1(t, bsh, offset, datap, count) 331 bus_space_tag_t t; 332 bus_space_handle_t bsh; 333 bus_size_t offset; 334 u_int8_t *datap; 335 bus_size_t count; 336 { 337 offset *= 2; 338 while (count-- > 0) { 339 *datap++ = *(volatile u_int8_t *) (bsh + offset); 340 } 341 } 342 343 void 344 neptune_bus_space_read_multi_2(t, bsh, offset, datap, count) 345 bus_space_tag_t t; 346 bus_space_handle_t bsh; 347 bus_size_t offset; 348 u_int16_t *datap; 349 bus_size_t count; 350 { 351 offset *= 2; 352 while (count-- > 0) { 353 *datap++ = *(volatile u_int16_t *) (bsh + offset); 354 } 355 } 356 357 void 358 neptune_bus_space_write_multi_1(t, bsh, offset, datap, count) 359 bus_space_tag_t t; 360 bus_space_handle_t bsh; 361 bus_size_t offset; 362 u_int8_t *datap; 363 bus_size_t count; 364 { 365 offset *= 2; 366 while (count-- > 0) { 367 *(volatile u_int8_t *) (bsh + offset) = *datap++; 368 } 369 } 370 371 void 372 neptune_bus_space_write_multi_2(t, bsh, offset, datap, count) 373 bus_space_tag_t t; 374 bus_space_handle_t bsh; 375 bus_size_t offset; 376 u_int16_t *datap; 377 bus_size_t count; 378 { 379 offset *= 2; 380 while (count-- > 0) { 381 *(volatile u_int16_t *) (bsh + offset) = *datap++; 382 } 383 } 384
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