1 /* $NetBSD: depca.c,v 1.16 2008/04/04 12:25:07 tsutsui 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. Neither the name of the University nor the names of its contributors 56 * may be used to endorse or promote products derived from this software 57 * without specific prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 60 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 61 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 62 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 63 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 64 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 65 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 * 71 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 72 */ 73 74 #include <sys/cdefs.h> 75 __KERNEL_RCSID(0, "$NetBSD: depca.c,v 1.16 2008/04/04 12:25:07 tsutsui Exp $"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/mbuf.h> 80 #include <sys/syslog.h> 81 #include <sys/socket.h> 82 #include <sys/device.h> 83 84 #include <net/if.h> 85 #include <net/if_ether.h> 86 #include <net/if_media.h> 87 88 #include <sys/cpu.h> 89 #include <sys/intr.h> 90 #include <sys/bus.h> 91 92 #include <dev/isa/isareg.h> 93 #include <dev/isa/isavar.h> 94 95 #include <dev/ic/lancereg.h> 96 #include <dev/ic/lancevar.h> 97 #include <dev/ic/am7990reg.h> 98 #include <dev/ic/am7990var.h> 99 #include <dev/ic/depcareg.h> 100 #include <dev/ic/depcavar.h> 101 102 struct le_depca_softc { 103 struct am7990_softc sc_am7990; /* glue to MI code */ 104 105 void *sc_ih; 106 }; 107 108 int le_depca_match(device_t, cfdata_t, void *); 109 void le_depca_attach(device_t, device_t, void *); 110 111 CFATTACH_DECL_NEW(le_depca, sizeof(struct le_depca_softc), 112 le_depca_match, le_depca_attach, NULL, NULL); 113 114 void depca_copytobuf(struct lance_softc *, void *, int, int); 115 void depca_copyfrombuf(struct lance_softc *, void *, int, int); 116 void depca_zerobuf(struct lance_softc *, int, int); 117 118 struct depca_attach_args { 119 const char *da_name; 120 }; 121 122 int depca_print(void *, const char *); 123 124 void 125 depca_attach(struct depca_softc *sc) 126 { 127 struct depca_attach_args da; 128 129 da.da_name = "le"; 130 131 (void)config_found(sc->sc_dev, &da, depca_print); 132 } 133 134 int 135 depca_print(void *aux, const char *pnp) 136 { 137 struct depca_attach_args *da = aux; 138 139 if (pnp) 140 aprint_normal("%s at %s", da->da_name, pnp); 141 142 return (UNCONF); 143 } 144 145 void 146 depca_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 147 { 148 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 149 150 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port); 151 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP, val); 152 } 153 154 uint16_t 155 depca_rdcsr(struct lance_softc *sc, uint16_t port) 156 { 157 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 158 159 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port); 160 return (bus_space_read_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP)); 161 } 162 163 int 164 depca_readprom(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *laddr) 165 { 166 int port, i; 167 168 /* 169 * Extract the physical MAC address from the ROM. 170 * 171 * The address PROM is 32 bytes wide, and we access it through 172 * a single I/O port. On each read, it rotates to the next 173 * position. We find the ethernet address by looking for a 174 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 175 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 176 * ethernet address and a checksum). 177 * 178 * It appears that the PROM can be at one of two locations, so 179 * we just try both. 180 */ 181 port = DEPCA_ADP; 182 for (i = 0; i < 32; i++) 183 if (bus_space_read_1(iot, ioh, port) == 0xff && 184 bus_space_read_1(iot, ioh, port) == 0x00 && 185 bus_space_read_1(iot, ioh, port) == 0x55 && 186 bus_space_read_1(iot, ioh, port) == 0xaa && 187 bus_space_read_1(iot, ioh, port) == 0xff && 188 bus_space_read_1(iot, ioh, port) == 0x00 && 189 bus_space_read_1(iot, ioh, port) == 0x55 && 190 bus_space_read_1(iot, ioh, port) == 0xaa) 191 goto found; 192 port = DEPCA_ADP + 1; 193 for (i = 0; i < 32; i++) 194 if (bus_space_read_1(iot, ioh, port) == 0xff && 195 bus_space_read_1(iot, ioh, port) == 0x00 && 196 bus_space_read_1(iot, ioh, port) == 0x55 && 197 bus_space_read_1(iot, ioh, port) == 0xaa && 198 bus_space_read_1(iot, ioh, port) == 0xff && 199 bus_space_read_1(iot, ioh, port) == 0x00 && 200 bus_space_read_1(iot, ioh, port) == 0x55 && 201 bus_space_read_1(iot, ioh, port) == 0xaa) 202 goto found; 203 aprint_error("depca: address not found\n"); 204 return (-1); 205 206 found: 207 208 if (laddr) { 209 for (i = 0; i < 6; i++) 210 laddr[i] = bus_space_read_1(iot, ioh, port); 211 } 212 213 #if 0 214 sum = 215 (laddr[0] << 2) + 216 (laddr[1] << 10) + 217 (laddr[2] << 1) + 218 (laddr[3] << 9) + 219 (laddr[4] << 0) + 220 (laddr[5] << 8); 221 sum = (sum & 0xffff) + (sum >> 16); 222 sum = (sum & 0xffff) + (sum >> 16); 223 224 rom_sum = bus_space_read_1(iot, ioh, port); 225 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 226 227 if (sum != rom_sum) { 228 aprint_error("depca: checksum mismatch; " 229 "calculated %04x != read %04x", sum, rom_sum); 230 return (-1); 231 } 232 #endif 233 234 return (0); 235 } 236 237 int 238 le_depca_match(device_t parent, cfdata_t cf, void *aux) 239 { 240 struct depca_attach_args *da = aux; 241 242 return (strcmp(da->da_name, cf->cf_name) == 0); 243 } 244 245 void 246 le_depca_attach(device_t parent, device_t self, void *aux) 247 { 248 struct depca_softc *dsc = device_private(parent); 249 struct le_depca_softc *lesc = device_private(self); 250 struct lance_softc *sc = &lesc->sc_am7990.lsc; 251 uint8_t val; 252 int i; 253 254 sc->sc_dev = self; 255 aprint_error("\n"); 256 257 /* I/O and memory spaces already mapped. */ 258 259 if (depca_readprom(dsc->sc_iot, dsc->sc_ioh, sc->sc_enaddr)) { 260 aprint_error_dev(self, "can't read PROM\n"); 261 return; 262 } 263 264 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_CSR, 265 DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE | 266 (dsc->sc_memsize == 32*1024 ? DEPCA_CSR_LOW32K : 0)); 267 268 val = 0xff; 269 for (;;) { 270 uint8_t cv; 271 272 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, 0, val, 273 dsc->sc_memsize); 274 for (i = 0; i < dsc->sc_memsize; i++) { 275 cv = bus_space_read_1(dsc->sc_memt, dsc->sc_memh, i); 276 if (cv != val) { 277 aprint_error_dev(self, 278 "failed to clear memory at %d " 279 "(0x%02x != 0x%02x)\n", 280 i, cv, val); 281 return; 282 } 283 } 284 if (val == 0x00) 285 break; 286 val -= 0x55; 287 } 288 289 sc->sc_conf3 = LE_C3_ACON; 290 sc->sc_mem = 0; /* Not used. */ 291 sc->sc_addr = 0; 292 sc->sc_memsize = dsc->sc_memsize; 293 294 sc->sc_copytodesc = depca_copytobuf; 295 sc->sc_copyfromdesc = depca_copyfrombuf; 296 sc->sc_copytobuf = depca_copytobuf; 297 sc->sc_copyfrombuf = depca_copyfrombuf; 298 sc->sc_zerobuf = depca_zerobuf; 299 300 sc->sc_rdcsr = depca_rdcsr; 301 sc->sc_wrcsr = depca_wrcsr; 302 sc->sc_hwinit = NULL; 303 304 aprint_error("%s", device_xname(self)); 305 am7990_config(&lesc->sc_am7990); 306 307 lesc->sc_ih = (*dsc->sc_intr_establish)(dsc, sc); 308 } 309 310 /* 311 * Controller interrupt. 312 */ 313 int 314 depca_intredge(void *arg) 315 { 316 317 if (am7990_intr(arg) == 0) 318 return (0); 319 for (;;) 320 if (am7990_intr(arg) == 0) 321 return (1); 322 } 323 324 /* 325 * DEPCA shared memory access functions. 326 */ 327 328 void 329 depca_copytobuf(struct lance_softc *sc, void *from, int boff, int len) 330 { 331 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 332 333 bus_space_write_region_1(dsc->sc_memt, dsc->sc_memh, boff, 334 from, len); 335 } 336 337 void 338 depca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len) 339 { 340 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 341 342 bus_space_read_region_1(dsc->sc_memt, dsc->sc_memh, boff, 343 to, len); 344 } 345 346 void 347 depca_zerobuf(struct lance_softc *sc, int boff, int len) 348 { 349 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 350 351 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, boff, 352 0x00, len); 353 } 354