depca.c revision 1.1
1 /* $NetBSD: depca.c,v 1.1 2000/08/11 02:27:09 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998, 2000 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 9 * Simulation Facility, NASA Ames Research Center. 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 the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /*- 41 * Copyright (c) 1992, 1993 42 * The Regents of the University of California. All rights reserved. 43 * 44 * This code is derived from software contributed to Berkeley by 45 * Ralph Campbell and Rick Macklem. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. All advertising materials mentioning features or use of this software 56 * must display the following acknowledgement: 57 * This product includes software developed by the University of 58 * California, Berkeley and its contributors. 59 * 4. Neither the name of the University nor the names of its contributors 60 * may be used to endorse or promote products derived from this software 61 * without specific prior written permission. 62 * 63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 73 * SUCH DAMAGE. 74 * 75 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 76 */ 77 78 #include "opt_inet.h" 79 #include "bpfilter.h" 80 81 #include <sys/param.h> 82 #include <sys/systm.h> 83 #include <sys/mbuf.h> 84 #include <sys/syslog.h> 85 #include <sys/socket.h> 86 #include <sys/device.h> 87 88 #include <net/if.h> 89 #include <net/if_ether.h> 90 #include <net/if_media.h> 91 92 #ifdef INET 93 #include <netinet/in.h> 94 #include <netinet/if_inarp.h> 95 #endif 96 97 #include <machine/cpu.h> 98 #include <machine/intr.h> 99 #include <machine/bus.h> 100 101 #include <dev/isa/isareg.h> 102 #include <dev/isa/isavar.h> 103 104 #include <dev/ic/lancereg.h> 105 #include <dev/ic/lancevar.h> 106 #include <dev/ic/am7990reg.h> 107 #include <dev/ic/am7990var.h> 108 #include <dev/ic/depcareg.h> 109 #include <dev/ic/depcavar.h> 110 111 struct le_depca_softc { 112 struct am7990_softc sc_am7990; /* glue to MI code */ 113 114 void *sc_ih; 115 }; 116 117 int le_depca_match(struct device *, struct cfdata *, void *); 118 void le_depca_attach(struct device *, struct device *, void *); 119 120 struct cfattach le_depca_ca = { 121 sizeof(struct le_depca_softc), le_depca_match, le_depca_attach 122 }; 123 124 void depca_copytobuf(struct lance_softc *, void *, int, int); 125 void depca_copyfrombuf(struct lance_softc *, void *, int, int); 126 void depca_zerobuf(struct lance_softc *, int, int); 127 128 struct depca_attach_args { 129 const char *da_name; 130 }; 131 132 int depca_print(void *, const char *); 133 134 void 135 depca_attach(struct depca_softc *sc) 136 { 137 struct depca_attach_args da; 138 139 da.da_name = "le"; 140 141 (void) config_found(&sc->sc_dev, &da, depca_print); 142 } 143 144 int 145 depca_print(void *aux, const char *pnp) 146 { 147 struct depca_attach_args *da = aux; 148 149 if (pnp) 150 printf("%s at %s", da->da_name, pnp); 151 152 return (UNCONF); 153 } 154 155 void 156 depca_wrcsr(struct lance_softc *sc, u_int16_t port, u_int16_t val) 157 { 158 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 159 160 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port); 161 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP, val); 162 } 163 164 u_int16_t 165 depca_rdcsr(struct lance_softc *sc, u_int16_t port) 166 { 167 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 168 169 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port); 170 return (bus_space_read_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP)); 171 } 172 173 int 174 depca_readprom(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *laddr) 175 { 176 int port, i; 177 178 /* 179 * Extract the physical MAC address from the ROM. 180 * 181 * The address PROM is 32 bytes wide, and we access it through 182 * a single I/O port. On each read, it rotates to the next 183 * position. We find the ethernet address by looking for a 184 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 185 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 186 * ethernet address and a checksum). 187 * 188 * It appears that the PROM can be at one of two locations, so 189 * we just try both. 190 */ 191 port = DEPCA_ADP; 192 for (i = 0; i < 32; i++) 193 if (bus_space_read_1(iot, ioh, port) == 0xff && 194 bus_space_read_1(iot, ioh, port) == 0x00 && 195 bus_space_read_1(iot, ioh, port) == 0x55 && 196 bus_space_read_1(iot, ioh, port) == 0xaa && 197 bus_space_read_1(iot, ioh, port) == 0xff && 198 bus_space_read_1(iot, ioh, port) == 0x00 && 199 bus_space_read_1(iot, ioh, port) == 0x55 && 200 bus_space_read_1(iot, ioh, port) == 0xaa) 201 goto found; 202 port = DEPCA_ADP + 1; 203 for (i = 0; i < 32; i++) 204 if (bus_space_read_1(iot, ioh, port) == 0xff && 205 bus_space_read_1(iot, ioh, port) == 0x00 && 206 bus_space_read_1(iot, ioh, port) == 0x55 && 207 bus_space_read_1(iot, ioh, port) == 0xaa && 208 bus_space_read_1(iot, ioh, port) == 0xff && 209 bus_space_read_1(iot, ioh, port) == 0x00 && 210 bus_space_read_1(iot, ioh, port) == 0x55 && 211 bus_space_read_1(iot, ioh, port) == 0xaa) 212 goto found; 213 printf("depca: address not found\n"); 214 return (-1); 215 216 found: 217 218 if (laddr) { 219 for (i = 0; i < 6; i++) 220 laddr[i] = bus_space_read_1(iot, ioh, port); 221 } 222 223 #if 0 224 sum = 225 (laddr[0] << 2) + 226 (laddr[1] << 10) + 227 (laddr[2] << 1) + 228 (laddr[3] << 9) + 229 (laddr[4] << 0) + 230 (laddr[5] << 8); 231 sum = (sum & 0xffff) + (sum >> 16); 232 sum = (sum & 0xffff) + (sum >> 16); 233 234 rom_sum = bus_space_read_1(iot, ioh, port); 235 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 236 237 if (sum != rom_sum) { 238 printf("depca: checksum mismatch; calculated %04x != read %04x", 239 sum, rom_sum); 240 return (-1); 241 } 242 #endif 243 244 return (0); 245 } 246 247 int 248 le_depca_match(struct device *parent, struct cfdata *match, void *aux) 249 { 250 struct depca_attach_args *da = aux; 251 252 return (strcmp(da->da_name, match->cf_driver->cd_name) == 0); 253 } 254 255 void 256 le_depca_attach(struct device *parent, struct device *self, void *aux) 257 { 258 struct depca_softc *dsc = (void *) parent; 259 struct le_depca_softc *lesc = (void *) self; 260 struct lance_softc *sc = &lesc->sc_am7990.lsc; 261 u_int8_t val; 262 int i; 263 264 printf("\n"); 265 266 /* I/O and memory spaces already mapped. */ 267 268 if (depca_readprom(dsc->sc_iot, dsc->sc_ioh, sc->sc_enaddr)) { 269 printf("%s: can't read PROM\n", self->dv_xname); 270 return; 271 } 272 273 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_CSR, 274 DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE | 275 (dsc->sc_memsize == 32*1024 ? DEPCA_CSR_LOW32K : 0)); 276 277 val = 0xff; 278 for (;;) { 279 u_int8_t cv; 280 281 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, 0, val, 282 dsc->sc_memsize); 283 for (i = 0; i < dsc->sc_memsize; i++) { 284 cv = bus_space_read_1(dsc->sc_memt, dsc->sc_memh, i); 285 if (cv != val) { 286 printf("%s: failed to clear memory at %d " 287 "(0x%02x != 0x%02x)\n", 288 sc->sc_dev.dv_xname, i, cv, val); 289 return; 290 } 291 } 292 if (val == 0x00) 293 break; 294 val -= 0x55; 295 } 296 297 sc->sc_conf3 = LE_C3_ACON; 298 sc->sc_mem = 0; /* Not used. */ 299 sc->sc_addr = 0; 300 sc->sc_memsize = dsc->sc_memsize; 301 302 sc->sc_copytodesc = depca_copytobuf; 303 sc->sc_copyfromdesc = depca_copyfrombuf; 304 sc->sc_copytobuf = depca_copytobuf; 305 sc->sc_copyfrombuf = depca_copyfrombuf; 306 sc->sc_zerobuf = depca_zerobuf; 307 308 sc->sc_rdcsr = depca_rdcsr; 309 sc->sc_wrcsr = depca_wrcsr; 310 sc->sc_hwinit = NULL; 311 312 printf("%s", sc->sc_dev.dv_xname); 313 am7990_config(&lesc->sc_am7990); 314 315 lesc->sc_ih = (*dsc->sc_intr_establish)(dsc, sc); 316 } 317 318 /* 319 * Controller interrupt. 320 */ 321 int 322 depca_intredge(void *arg) 323 { 324 325 if (am7990_intr(arg) == 0) 326 return (0); 327 for (;;) 328 if (am7990_intr(arg) == 0) 329 return (1); 330 } 331 332 /* 333 * DEPCA shared memory access functions. 334 */ 335 336 void 337 depca_copytobuf(struct lance_softc *sc, void *from, int boff, int len) 338 { 339 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 340 341 bus_space_write_region_1(dsc->sc_memt, dsc->sc_memh, boff, 342 from, len); 343 } 344 345 void 346 depca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len) 347 { 348 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 349 350 bus_space_read_region_1(dsc->sc_memt, dsc->sc_memh, boff, 351 to, len); 352 } 353 354 void 355 depca_zerobuf(struct lance_softc *sc, int boff, int len) 356 { 357 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 358 359 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, boff, 360 0x00, len); 361 } 362
Indexes created Mon Sep 22 13:09:51 GMT 2025