1 /* $NetBSD: depca.c,v 1.19 2021/08/07 16:19:12 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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /*- 34 * Copyright (c) 1992, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * Ralph Campbell and Rick Macklem. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 65 */ 66 67 #include <sys/cdefs.h> 68 __KERNEL_RCSID(0, "$NetBSD: depca.c,v 1.19 2021/08/07 16:19:12 thorpej Exp $"); 69 70 #include <sys/param.h> 71 #include <sys/systm.h> 72 #include <sys/mbuf.h> 73 #include <sys/syslog.h> 74 #include <sys/socket.h> 75 #include <sys/device.h> 76 77 #include <net/if.h> 78 #include <net/if_ether.h> 79 #include <net/if_media.h> 80 81 #include <sys/cpu.h> 82 #include <sys/intr.h> 83 #include <sys/bus.h> 84 85 #include <dev/isa/isareg.h> 86 #include <dev/isa/isavar.h> 87 88 #include <dev/ic/lancereg.h> 89 #include <dev/ic/lancevar.h> 90 #include <dev/ic/am7990reg.h> 91 #include <dev/ic/am7990var.h> 92 #include <dev/ic/depcareg.h> 93 #include <dev/ic/depcavar.h> 94 95 struct le_depca_softc { 96 struct am7990_softc sc_am7990; /* glue to MI code */ 97 98 void *sc_ih; 99 }; 100 101 int le_depca_match(device_t, cfdata_t, void *); 102 void le_depca_attach(device_t, device_t, void *); 103 104 CFATTACH_DECL_NEW(le_depca, sizeof(struct le_depca_softc), 105 le_depca_match, le_depca_attach, NULL, NULL); 106 107 void depca_copytobuf(struct lance_softc *, void *, int, int); 108 void depca_copyfrombuf(struct lance_softc *, void *, int, int); 109 void depca_zerobuf(struct lance_softc *, int, int); 110 111 struct depca_attach_args { 112 const char *da_name; 113 }; 114 115 int depca_print(void *, const char *); 116 117 void 118 depca_attach(struct depca_softc *sc) 119 { 120 struct depca_attach_args da; 121 122 da.da_name = "le"; 123 124 (void)config_found(sc->sc_dev, &da, depca_print, CFARGS_NONE); 125 } 126 127 int 128 depca_print(void *aux, const char *pnp) 129 { 130 struct depca_attach_args *da = aux; 131 132 if (pnp) 133 aprint_normal("%s at %s", da->da_name, pnp); 134 135 return (UNCONF); 136 } 137 138 void 139 depca_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 140 { 141 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 142 143 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port); 144 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP, val); 145 } 146 147 uint16_t 148 depca_rdcsr(struct lance_softc *sc, uint16_t port) 149 { 150 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 151 152 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RAP, port); 153 return (bus_space_read_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_RDP)); 154 } 155 156 int 157 depca_readprom(bus_space_tag_t iot, bus_space_handle_t ioh, uint8_t *laddr) 158 { 159 int port, i; 160 161 /* 162 * Extract the physical MAC address from the ROM. 163 * 164 * The address PROM is 32 bytes wide, and we access it through 165 * a single I/O port. On each read, it rotates to the next 166 * position. We find the ethernet address by looking for a 167 * particular sequence of bytes (0xff, 0x00, 0x55, 0xaa, 0xff, 168 * 0x00, 0x55, 0xaa), and then reading the next 8 bytes (the 169 * ethernet address and a checksum). 170 * 171 * It appears that the PROM can be at one of two locations, so 172 * we just try both. 173 */ 174 port = DEPCA_ADP; 175 for (i = 0; i < 32; i++) 176 if (bus_space_read_1(iot, ioh, port) == 0xff && 177 bus_space_read_1(iot, ioh, port) == 0x00 && 178 bus_space_read_1(iot, ioh, port) == 0x55 && 179 bus_space_read_1(iot, ioh, port) == 0xaa && 180 bus_space_read_1(iot, ioh, port) == 0xff && 181 bus_space_read_1(iot, ioh, port) == 0x00 && 182 bus_space_read_1(iot, ioh, port) == 0x55 && 183 bus_space_read_1(iot, ioh, port) == 0xaa) 184 goto found; 185 port = DEPCA_ADP + 1; 186 for (i = 0; i < 32; i++) 187 if (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 bus_space_read_1(iot, ioh, port) == 0xff && 192 bus_space_read_1(iot, ioh, port) == 0x00 && 193 bus_space_read_1(iot, ioh, port) == 0x55 && 194 bus_space_read_1(iot, ioh, port) == 0xaa) 195 goto found; 196 aprint_error("depca: address not found\n"); 197 return (-1); 198 199 found: 200 201 if (laddr) { 202 for (i = 0; i < 6; i++) 203 laddr[i] = bus_space_read_1(iot, ioh, port); 204 } 205 206 #if 0 207 sum = 208 (laddr[0] << 2) + 209 (laddr[1] << 10) + 210 (laddr[2] << 1) + 211 (laddr[3] << 9) + 212 (laddr[4] << 0) + 213 (laddr[5] << 8); 214 sum = (sum & 0xffff) + (sum >> 16); 215 sum = (sum & 0xffff) + (sum >> 16); 216 217 rom_sum = bus_space_read_1(iot, ioh, port); 218 rom_sum |= bus_space_read_1(iot, ioh, port) << 8; 219 220 if (sum != rom_sum) { 221 aprint_error("depca: checksum mismatch; " 222 "calculated %04x != read %04x", sum, rom_sum); 223 return (-1); 224 } 225 #endif 226 227 return (0); 228 } 229 230 int 231 le_depca_match(device_t parent, cfdata_t cf, void *aux) 232 { 233 struct depca_attach_args *da = aux; 234 235 return (strcmp(da->da_name, cf->cf_name) == 0); 236 } 237 238 void 239 le_depca_attach(device_t parent, device_t self, void *aux) 240 { 241 struct depca_softc *dsc = device_private(parent); 242 struct le_depca_softc *lesc = device_private(self); 243 struct lance_softc *sc = &lesc->sc_am7990.lsc; 244 uint8_t val; 245 int i; 246 247 sc->sc_dev = self; 248 aprint_error("\n"); 249 250 /* I/O and memory spaces already mapped. */ 251 252 if (depca_readprom(dsc->sc_iot, dsc->sc_ioh, sc->sc_enaddr)) { 253 aprint_error_dev(self, "can't read PROM\n"); 254 return; 255 } 256 257 bus_space_write_2(dsc->sc_iot, dsc->sc_ioh, DEPCA_CSR, 258 DEPCA_CSR_DUM | DEPCA_CSR_IEN | DEPCA_CSR_SHE | 259 (dsc->sc_memsize == 32*1024 ? DEPCA_CSR_LOW32K : 0)); 260 261 val = 0xff; 262 for (;;) { 263 uint8_t cv; 264 265 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, 0, val, 266 dsc->sc_memsize); 267 for (i = 0; i < dsc->sc_memsize; i++) { 268 cv = bus_space_read_1(dsc->sc_memt, dsc->sc_memh, i); 269 if (cv != val) { 270 aprint_error_dev(self, 271 "failed to clear memory at %d " 272 "(0x%02x != 0x%02x)\n", 273 i, cv, val); 274 return; 275 } 276 } 277 if (val == 0x00) 278 break; 279 val -= 0x55; 280 } 281 282 sc->sc_conf3 = LE_C3_ACON; 283 sc->sc_mem = 0; /* Not used. */ 284 sc->sc_addr = 0; 285 sc->sc_memsize = dsc->sc_memsize; 286 287 sc->sc_copytodesc = depca_copytobuf; 288 sc->sc_copyfromdesc = depca_copyfrombuf; 289 sc->sc_copytobuf = depca_copytobuf; 290 sc->sc_copyfrombuf = depca_copyfrombuf; 291 sc->sc_zerobuf = depca_zerobuf; 292 293 sc->sc_rdcsr = depca_rdcsr; 294 sc->sc_wrcsr = depca_wrcsr; 295 sc->sc_hwinit = NULL; 296 297 aprint_error("%s", device_xname(self)); 298 am7990_config(&lesc->sc_am7990); 299 300 lesc->sc_ih = (*dsc->sc_intr_establish)(dsc, sc); 301 } 302 303 /* 304 * Controller interrupt. 305 */ 306 int 307 depca_intredge(void *arg) 308 { 309 310 if (am7990_intr(arg) == 0) 311 return (0); 312 for (;;) 313 if (am7990_intr(arg) == 0) 314 return (1); 315 } 316 317 /* 318 * DEPCA shared memory access functions. 319 */ 320 321 void 322 depca_copytobuf(struct lance_softc *sc, void *from, int boff, int len) 323 { 324 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 325 326 bus_space_write_region_1(dsc->sc_memt, dsc->sc_memh, boff, 327 from, len); 328 } 329 330 void 331 depca_copyfrombuf(struct lance_softc *sc, void *to, int boff, int len) 332 { 333 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 334 335 bus_space_read_region_1(dsc->sc_memt, dsc->sc_memh, boff, 336 to, len); 337 } 338 339 void 340 depca_zerobuf(struct lance_softc *sc, int boff, int len) 341 { 342 struct depca_softc *dsc = device_private(device_parent(sc->sc_dev)); 343 344 bus_space_set_region_1(dsc->sc_memt, dsc->sc_memh, boff, 345 0x00, len); 346 } 347
Indexes created Sat Sep 20 22:09:52 GMT 2025