depca.c revision 1.4
1 /* $NetBSD: depca.c,v 1.4 2001/11/13 13:14:36 lukem 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 <sys/cdefs.h> 79 __KERNEL_RCSID(0, "$NetBSD: depca.c,v 1.4 2001/11/13 13:14:36 lukem Exp $"); 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 #include <machine/cpu.h> 93 #include <machine/intr.h> 94 #include <machine/bus.h> 95 96 #include <dev/isa/isareg.h> 97 #include <dev/isa/isavar.h> 98 99 #include <dev/ic/lancereg.h> 100 #include <dev/ic/lancevar.h> 101 #include <dev/ic/am7990reg.h> 102 #include <dev/ic/am7990var.h> 103 #include <dev/ic/depcareg.h> 104 #include <dev/ic/depcavar.h> 105 106 struct le_depca_softc { 107 struct am7990_softc sc_am7990; /* glue to MI code */ 108 109 void *sc_ih; 110 }; 111 112 int le_depca_match(struct device *, struct cfdata *, void *); 113 void le_depca_attach(struct device *, struct device *, void *); 114 115 struct cfattach le_depca_ca = { 116 sizeof(struct le_depca_softc), le_depca_match, le_depca_attach 117 }; 118 119 void depca_copytobuf(struct lance_softc *, void *, int, int); 120 void depca_copyfrombuf(struct lance_softc *, void *, int, int); 121 void depca_zerobuf(struct lance_softc *, int, int); 122 123 struct depca_attach_args { 124 const char *da_name; 125 }; 126 127 int depca_print(void *, const char *); 128 129 void 130 depca_attach(struct depca_softc *sc) 131 { 132 struct depca_attach_args da; 133 134 da.da_name = "le"; 135 136 (void) config_found(&sc->sc_dev, &da, depca_print); 137 } 138 139 int 140 depca_print(void *aux, const char *pnp) 141 { 142 struct depca_attach_args *da = aux; 143 144 if (pnp) 145 printf("%s at %s", da->da_name, pnp); 146 147 return (UNCONF); 148 } 149 150 void 151 depca_wrcsr(struct lance_softc *sc, u_int16_t port, u_int16_t val) 152 { 153 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 154 155 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port); 156 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP, val); 157 } 158 159 u_int16_t 160 depca_rdcsr(struct lance_softc *sc, u_int16_t port) 161 { 162 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 163 164 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port); 165 return (bus_space_read_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP)); 166 } 167 168 int 169 depca_readprom(bus_space_tag_t iot, bus_space_handle_t ioh, u_int8_t *laddr) 170 { 171 int port, i; 172 173 /* 174 * Extract the physical MAC address from the ROM. 175 * 176 * The address PROM is 32 bytes wide, and we access it through 177 * a single I/O port. On each read, it rotates to the next 178 * position. We find the ethernet address by looking for a 179 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 180 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 181 * ethernet address and a checksum). 182 * 183 * It appears that the PROM can be at one of two locations, so 184 * we just try both. 185 */ 186 port = DEPCA_ADP; 187 for (i = 0; i < 32; i++) 188 if (bus_space_read_1(iot, ioh, port) == 0xff && 189 bus_space_read_1(iot, ioh, port) == 0x00 && 190 bus_space_read_1(iot, ioh, port) == 0x55 && 191 bus_space_read_1(iot, ioh, port) == 0xaa && 192 bus_space_read_1(iot, ioh, port) == 0xff && 193 bus_space_read_1(iot, ioh, port) == 0x00 && 194 bus_space_read_1(iot, ioh, port) == 0x55 && 195 bus_space_read_1(iot, ioh, port) == 0xaa) 196 goto found; 197 port = DEPCA_ADP + 1; 198 for (i = 0; i < 32; i++) 199 if (bus_space_read_1(iot, ioh, port) == 0xff && 200 bus_space_read_1(iot, ioh, port) == 0x00 && 201 bus_space_read_1(iot, ioh, port) == 0x55 && 202 bus_space_read_1(iot, ioh, port) == 0xaa && 203 bus_space_read_1(iot, ioh, port) == 0xff && 204 bus_space_read_1(iot, ioh, port) == 0x00 && 205 bus_space_read_1(iot, ioh, port) == 0x55 && 206 bus_space_read_1(iot, ioh, port) == 0xaa) 207 goto found; 208 printf("depca: address not found\n"); 209 return (-1); 210 211 found: 212 213 if (laddr) { 214 for (i = 0; i < 6; i++) 215 laddr[i] = bus_space_read_1(iot, ioh, port); 216 } 217 218 #if 0 219 sum = 220 (laddr[0] << 2) + 221 (laddr[1] << 10) + 222 (laddr[2] << 1) + 223 (laddr[3] << 9) + 224 (laddr[4] << 0) + 225 (laddr[5] << 8); 226 sum = (sum & 0xffff) + (sum >> 16); 227 sum = (sum & 0xffff) + (sum >> 16); 228 229 rom_sum = bus_space_read_1(iot, ioh, port); 230 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 231 232 if (sum != rom_sum) { 233 printf("depca: checksum mismatch; calculated %04x != read %04x", 234 sum, rom_sum); 235 return (-1); 236 } 237 #endif 238 239 return (0); 240 } 241 242 int 243 le_depca_match(struct device *parent, struct cfdata *match, void *aux) 244 { 245 struct depca_attach_args *da = aux; 246 247 return (strcmp(da->da_name, match->cf_driver->cd_name) == 0); 248 } 249 250 void 251 le_depca_attach(struct device *parent, struct device *self, void *aux) 252 { 253 struct depca_softc *dsc = (void *) parent; 254 struct le_depca_softc *lesc = (void *) self; 255 struct lance_softc *sc = &lesc->sc_am7990.lsc; 256 u_int8_t val; 257 int i; 258 259 printf("\n"); 260 261 /* I/O and memory spaces already mapped. */ 262 263 if (depca_readprom(dsc->sc_iot, dsc->sc_ioh, sc->sc_enaddr)) { 264 printf("%s: can't read PROM\n", self->dv_xname); 265 return; 266 } 267 268 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_CSR, 269 DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE | 270 (dsc->sc_memsize == 32*1024 ? DEPCA_CSR_LOW32K : 0)); 271 272 val = 0xff; 273 for (;;) { 274 u_int8_t cv; 275 276 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, 0, val, 277 dsc->sc_memsize); 278 for (i = 0; i < dsc->sc_memsize; i++) { 279 cv = bus_space_read_1(dsc->sc_memt, dsc->sc_memh, i); 280 if (cv != val) { 281 printf("%s: failed to clear memory at %d " 282 "(0x%02x != 0x%02x)\n", 283 sc->sc_dev.dv_xname, i, cv, val); 284 return; 285 } 286 } 287 if (val == 0x00) 288 break; 289 val -= 0x55; 290 } 291 292 sc->sc_conf3 = LE_C3_ACON; 293 sc->sc_mem = 0; /* Not used. */ 294 sc->sc_addr = 0; 295 sc->sc_memsize = dsc->sc_memsize; 296 297 sc->sc_copytodesc = depca_copytobuf; 298 sc->sc_copyfromdesc = depca_copyfrombuf; 299 sc->sc_copytobuf = depca_copytobuf; 300 sc->sc_copyfrombuf = depca_copyfrombuf; 301 sc->sc_zerobuf = depca_zerobuf; 302 303 sc->sc_rdcsr = depca_rdcsr; 304 sc->sc_wrcsr = depca_wrcsr; 305 sc->sc_hwinit = NULL; 306 307 printf("%s", sc->sc_dev.dv_xname); 308 am7990_config(&lesc->sc_am7990); 309 310 lesc->sc_ih = (*dsc->sc_intr_establish)(dsc, sc); 311 } 312 313 /* 314 * Controller interrupt. 315 */ 316 int 317 depca_intredge(void *arg) 318 { 319 320 if (am7990_intr(arg) == 0) 321 return (0); 322 for (;;) 323 if (am7990_intr(arg) == 0) 324 return (1); 325 } 326 327 /* 328 * DEPCA shared memory access functions. 329 */ 330 331 void 332 depca_copytobuf(struct lance_softc *sc, void *from, int boff, int len) 333 { 334 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 335 336 bus_space_write_region_1(dsc->sc_memt, dsc->sc_memh, boff, 337 from, len); 338 } 339 340 void 341 depca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len) 342 { 343 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 344 345 bus_space_read_region_1(dsc->sc_memt, dsc->sc_memh, boff, 346 to, len); 347 } 348 349 void 350 depca_zerobuf(struct lance_softc *sc, int boff, int len) 351 { 352 struct depca_softc *dsc = (void *) sc->sc_dev.dv_parent; 353 354 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, boff, 355 0x00, len); 356 } 357
Indexes created Mon Sep 22 21:09:42 GMT 2025