if_le_isa.c revision 1.46
1 /* $NetBSD: if_le_isa.c,v 1.46 2008/04/04 12:25:07 tsutsui Exp $ */ 2 3 /*- 4 * Copyright (c) 1997, 1998 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: if_le_isa.c,v 1.46 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 <uvm/uvm_extern.h> 85 86 #include <net/if.h> 87 #include <net/if_ether.h> 88 #include <net/if_media.h> 89 90 #include <sys/cpu.h> 91 #include <sys/intr.h> 92 #include <sys/bus.h> 93 94 #include <dev/isa/isareg.h> 95 #include <dev/isa/isavar.h> 96 #include <dev/isa/isadmavar.h> 97 98 #include <dev/ic/lancereg.h> 99 #include <dev/ic/lancevar.h> 100 #include <dev/ic/am7990reg.h> 101 #include <dev/ic/am7990var.h> 102 103 #include <dev/isa/if_levar.h> 104 105 int ne2100_isa_probe(device_t, cfdata_t, void *); 106 int bicc_isa_probe(device_t, cfdata_t, void *); 107 void le_dummyattach(device_t, device_t, void *); 108 int le_dummyprobe(device_t, cfdata_t, void *); 109 void le_ne2100_attach(device_t, device_t, void *); 110 void le_bicc_attach(device_t, device_t, void *); 111 112 CFATTACH_DECL_NEW(nele, 0, 113 ne2100_isa_probe, le_dummyattach, NULL, NULL); 114 115 CFATTACH_DECL_NEW(le_nele, sizeof(struct le_softc), 116 le_dummyprobe, le_ne2100_attach, NULL, NULL); 117 118 CFATTACH_DECL_NEW(bicc, 0, 119 bicc_isa_probe, le_dummyattach, NULL, NULL); 120 121 CFATTACH_DECL_NEW(le_bicc, sizeof(struct le_softc), 122 le_dummyprobe, le_bicc_attach, NULL, NULL); 123 124 struct le_isa_params { 125 const char *name; 126 int iosize, rap, rdp; 127 int macstart, macstride; 128 } ne2100_params = { 129 "NE2100", 130 24, NE2100_RAP, NE2100_RDP, 131 0, 1 132 }, bicc_params = { 133 "BICC Isolan", 134 16, BICC_RAP, BICC_RDP, 135 0, 2 136 }; 137 138 int lance_isa_probe(struct isa_attach_args *, struct le_isa_params *, int); 139 void le_isa_attach(struct device *, struct le_softc *, 140 struct isa_attach_args *, struct le_isa_params *); 141 142 int le_isa_intredge(void *); 143 144 #if defined(_KERNEL_OPT) 145 #include "opt_ddb.h" 146 #endif 147 148 #ifdef DDB 149 #define integrate 150 #define hide 151 #else 152 #define integrate static inline 153 #define hide static 154 #endif 155 156 hide void le_isa_wrcsr(struct lance_softc *, uint16_t, uint16_t); 157 hide uint16_t le_isa_rdcsr(struct lance_softc *, uint16_t); 158 159 #define LE_ISA_MEMSIZE 16384 160 161 hide void 162 le_isa_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 163 { 164 struct le_softc *lesc = (struct le_softc *)sc; 165 bus_space_tag_t iot = lesc->sc_iot; 166 bus_space_handle_t ioh = lesc->sc_ioh; 167 168 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 169 bus_space_write_2(iot, ioh, lesc->sc_rdp, val); 170 } 171 172 hide uint16_t 173 le_isa_rdcsr(struct lance_softc *sc, uint16_t port) 174 { 175 struct le_softc *lesc = (struct le_softc *)sc; 176 bus_space_tag_t iot = lesc->sc_iot; 177 bus_space_handle_t ioh = lesc->sc_ioh; 178 uint16_t val; 179 180 bus_space_write_2(iot, ioh, lesc->sc_rap, port); 181 val = bus_space_read_2(iot, ioh, lesc->sc_rdp); 182 return (val); 183 } 184 185 int 186 ne2100_isa_probe(device_t parent, cfdata_t cf, void *aux) 187 { 188 189 return (lance_isa_probe(aux, &ne2100_params, cf->cf_flags)); 190 } 191 192 int 193 bicc_isa_probe(device_t parent, cfdata_t cf, void *aux) 194 { 195 196 return (lance_isa_probe(aux, &bicc_params, cf->cf_flags)); 197 } 198 199 /* 200 * Determine which chip is present on the card. 201 */ 202 int 203 lance_isa_probe(struct isa_attach_args *ia, struct le_isa_params *p, int flags) 204 { 205 bus_space_tag_t iot = ia->ia_iot; 206 bus_space_handle_t ioh; 207 int rap, rdp; 208 int rv = 0; 209 210 if (ia->ia_nio < 1) 211 return (0); 212 if (ia->ia_nirq < 1) 213 return (0); 214 if (ia->ia_ndrq < 1) 215 return (0); 216 217 if (ISA_DIRECT_CONFIG(ia)) 218 return (0); 219 220 /* Disallow wildcarded i/o address. */ 221 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 222 return (0); 223 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 224 return (0); 225 if ((flags & LANCEISA_FLAG_LOCALBUS) == 0 && 226 ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ) 227 return (0); 228 229 /* Map i/o space. */ 230 if (bus_space_map(iot, ia->ia_io[0].ir_addr, p->iosize, 0, &ioh)) 231 return (0); 232 233 rap = p->rap; 234 rdp = p->rdp; 235 236 /* Stop the LANCE chip and put it in a known state. */ 237 bus_space_write_2(iot, ioh, rap, LE_CSR0); 238 bus_space_write_2(iot, ioh, rdp, LE_C0_STOP); 239 delay(100); 240 241 bus_space_write_2(iot, ioh, rap, LE_CSR0); 242 if (bus_space_read_2(iot, ioh, rdp) != LE_C0_STOP) 243 goto bad; 244 245 bus_space_write_2(iot, ioh, rap, LE_CSR3); 246 bus_space_write_2(iot, ioh, rdp, 0); 247 248 ia->ia_nio = 1; 249 ia->ia_io[0].ir_size = p->iosize; 250 251 ia->ia_nirq = 1; 252 253 if ((flags & LANCEISA_FLAG_LOCALBUS) != 0 && 254 ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ) 255 ia->ia_ndrq = 0; 256 else 257 ia->ia_ndrq = 1; 258 259 ia->ia_niomem = 0; 260 261 rv = 1; 262 263 bad: 264 bus_space_unmap(iot, ioh, p->iosize); 265 return (rv); 266 } 267 268 void 269 le_dummyattach(device_t parent, device_t self, void *aux) 270 { 271 272 aprint_normal("\n"); 273 274 config_found(self, aux, 0); 275 } 276 277 int 278 le_dummyprobe(device_t parent, cfdata_t cf, void *aux) 279 { 280 281 return (1); 282 } 283 284 void 285 le_ne2100_attach(device_t parent, device_t self, void *aux) 286 { 287 struct le_softc *lesc = device_private(self); 288 struct lance_softc *sc = &lesc->sc_am7990.lsc; 289 290 sc->sc_dev = self; 291 le_isa_attach(parent, lesc, aux, &ne2100_params); 292 } 293 294 void 295 le_bicc_attach(device_t parent, device_t self, void *aux) 296 { 297 struct le_softc *lesc = device_private(self); 298 struct lance_softc *sc = &lesc->sc_am7990.lsc; 299 300 sc->sc_dev = self; 301 le_isa_attach(parent, lesc, aux, &bicc_params); 302 } 303 304 void 305 le_isa_attach(struct device *parent, struct le_softc *lesc, 306 struct isa_attach_args *ia, struct le_isa_params *p) 307 { 308 struct lance_softc *sc = &lesc->sc_am7990.lsc; 309 bus_space_tag_t iot = ia->ia_iot; 310 bus_space_handle_t ioh; 311 bus_dma_tag_t dmat = ia->ia_dmat; 312 bus_dma_segment_t seg; 313 int i, rseg, error; 314 315 aprint_normal(": %s Ethernet\n", p->name); 316 317 if (bus_space_map(iot, ia->ia_io[0].ir_addr, p->iosize, 0, &ioh)) 318 panic("%s: can't map io", device_xname(sc->sc_dev)); 319 320 /* 321 * Extract the physical MAC address from the ROM. 322 */ 323 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 324 sc->sc_enaddr[i] = 325 bus_space_read_1(iot, ioh, p->macstart + i * p->macstride); 326 327 lesc->sc_iot = iot; 328 lesc->sc_ioh = ioh; 329 lesc->sc_dmat = dmat; 330 lesc->sc_rap = p->rap; 331 lesc->sc_rdp = p->rdp; 332 333 /* 334 * Allocate a DMA area for the card. 335 */ 336 if (bus_dmamem_alloc(dmat, LE_ISA_MEMSIZE, PAGE_SIZE, 0, &seg, 1, 337 &rseg, BUS_DMA_NOWAIT)) { 338 aprint_error_dev(sc->sc_dev, 339 "couldn't allocate memory for card\n"); 340 return; 341 } 342 if (bus_dmamem_map(dmat, &seg, rseg, LE_ISA_MEMSIZE, 343 (void **)&sc->sc_mem, 344 BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { 345 aprint_error_dev(sc->sc_dev, "couldn't map memory for card\n"); 346 return; 347 } 348 349 /* 350 * Create and load the DMA map for the DMA area. 351 */ 352 if (bus_dmamap_create(dmat, LE_ISA_MEMSIZE, 1, 353 LE_ISA_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) { 354 aprint_error_dev(sc->sc_dev, "couldn't create DMA map\n"); 355 bus_dmamem_free(dmat, &seg, rseg); 356 return; 357 } 358 if (bus_dmamap_load(dmat, lesc->sc_dmam, 359 sc->sc_mem, LE_ISA_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { 360 aprint_error_dev(sc->sc_dev, "coundn't load DMA map\n"); 361 bus_dmamem_free(dmat, &seg, rseg); 362 return; 363 } 364 365 sc->sc_conf3 = 0; 366 sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr; 367 sc->sc_memsize = LE_ISA_MEMSIZE; 368 369 sc->sc_copytodesc = lance_copytobuf_contig; 370 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 371 sc->sc_copytobuf = lance_copytobuf_contig; 372 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 373 sc->sc_zerobuf = lance_zerobuf_contig; 374 375 sc->sc_rdcsr = le_isa_rdcsr; 376 sc->sc_wrcsr = le_isa_wrcsr; 377 sc->sc_hwinit = NULL; 378 379 if (ia->ia_ndrq > 0) { 380 if ((error = isa_dmacascade(ia->ia_ic, 381 ia->ia_drq[0].ir_drq)) != 0) { 382 aprint_error_dev(sc->sc_dev, 383 "unable to cascade DRQ, error = %d\n", error); 384 return; 385 } 386 } 387 388 lesc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 389 IST_EDGE, IPL_NET, le_isa_intredge, sc); 390 391 aprint_normal("%s", device_xname(sc->sc_dev)); 392 am7990_config(&lesc->sc_am7990); 393 } 394 395 /* 396 * Controller interrupt. 397 */ 398 int 399 le_isa_intredge(void *arg) 400 { 401 402 if (am7990_intr(arg) == 0) 403 return (0); 404 for (;;) 405 if (am7990_intr(arg) == 0) 406 return (1); 407 } 408
Indexes created Tue Sep 30 20:09:53 GMT 2025