1 /* $NetBSD: if_le_pci.c,v 1.43 2005/12/11 12:22:49 christos 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 __FBSDID("$FreeBSD$"); 76 77 #include <sys/param.h> 78 #include <sys/systm.h> 79 #include <sys/bus.h> 80 #include <sys/endian.h> 81 #include <sys/kernel.h> 82 #include <sys/lock.h> 83 #include <sys/module.h> 84 #include <sys/mutex.h> 85 #include <sys/resource.h> 86 #include <sys/rman.h> 87 #include <sys/socket.h> 88 89 #include <net/ethernet.h> 90 #include <net/if.h> 91 #include <net/if_media.h> 92 93 #include <machine/bus.h> 94 #include <machine/resource.h> 95 96 #include <dev/pci/pcireg.h> 97 #include <dev/pci/pcivar.h> 98 99 #include <dev/le/lancereg.h> 100 #include <dev/le/lancevar.h> 101 #include <dev/le/am79900var.h> 102 103 #define AMD_VENDOR 0x1022 104 #define AMD_PCNET_PCI 0x2000 105 #define AMD_PCNET_HOME 0x2001 106 #define PCNET_MEMSIZE (32*1024) 107 #define PCNET_PCI_RDP 0x10 108 #define PCNET_PCI_RAP 0x12 109 #define PCNET_PCI_BDP 0x16 110 111 struct le_pci_softc { 112 struct am79900_softc sc_am79900; /* glue to MI code */ 113 114 struct resource *sc_rres; 115 116 struct resource *sc_ires; 117 void *sc_ih; 118 119 bus_dma_tag_t sc_pdmat; 120 bus_dma_tag_t sc_dmat; 121 bus_dmamap_t sc_dmam; 122 }; 123 124 static device_probe_t le_pci_probe; 125 static device_attach_t le_pci_attach; 126 static device_detach_t le_pci_detach; 127 static device_resume_t le_pci_resume; 128 static device_suspend_t le_pci_suspend; 129 130 static device_method_t le_pci_methods[] = { 131 /* Device interface */ 132 DEVMETHOD(device_probe, le_pci_probe), 133 DEVMETHOD(device_attach, le_pci_attach), 134 DEVMETHOD(device_detach, le_pci_detach), 135 /* We can just use the suspend method here. */ 136 DEVMETHOD(device_shutdown, le_pci_suspend), 137 DEVMETHOD(device_suspend, le_pci_suspend), 138 DEVMETHOD(device_resume, le_pci_resume), 139 140 { 0, 0 } 141 }; 142 143 DEFINE_CLASS_0(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc)); 144 DRIVER_MODULE(le, pci, le_pci_driver, le_devclass, 0, 0); 145 MODULE_DEPEND(le, ether, 1, 1, 1); 146 147 static const int le_home_supmedia[] = { 148 IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0) 149 }; 150 151 static const int le_pci_supmedia[] = { 152 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 153 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0), 154 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0), 155 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0), 156 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0), 157 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0) 158 }; 159 160 static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t); 161 static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t); 162 static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t); 163 static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t); 164 static int le_pci_mediachange(struct lance_softc *); 165 static void le_pci_hwreset(struct lance_softc *); 166 static bus_dmamap_callback_t le_pci_dma_callback; 167 168 static void 169 le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val) 170 { 171 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 172 173 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 174 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 175 bus_write_2(lesc->sc_rres, PCNET_PCI_BDP, val); 176 } 177 178 static uint16_t 179 le_pci_rdbcr(struct lance_softc *sc, uint16_t port) 180 { 181 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 182 183 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 184 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 185 return (bus_read_2(lesc->sc_rres, PCNET_PCI_BDP)); 186 } 187 188 static void 189 le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 190 { 191 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 192 193 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 194 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 195 bus_write_2(lesc->sc_rres, PCNET_PCI_RDP, val); 196 } 197 198 static uint16_t 199 le_pci_rdcsr(struct lance_softc *sc, uint16_t port) 200 { 201 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 202 203 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 204 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 205 return (bus_read_2(lesc->sc_rres, PCNET_PCI_RDP)); 206 } 207 208 static int 209 le_pci_mediachange(struct lance_softc *sc) 210 { 211 struct ifmedia *ifm = &sc->sc_media; 212 uint16_t reg; 213 214 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 215 return (EINVAL); 216 217 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) 218 le_pci_wrbcr(sc, LE_BCR49, 219 (le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1); 220 else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) 221 le_pci_wrbcr(sc, LE_BCR2, 222 le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL); 223 else { 224 le_pci_wrbcr(sc, LE_BCR2, 225 le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL); 226 227 reg = le_pci_rdcsr(sc, LE_CSR15); 228 reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK); 229 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T) 230 reg |= LE_C15_PORTSEL(LE_PORTSEL_10T); 231 else 232 reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI); 233 le_pci_wrcsr(sc, LE_CSR15, reg); 234 } 235 236 reg = le_pci_rdbcr(sc, LE_BCR9); 237 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) { 238 reg |= LE_B9_FDEN; 239 /* 240 * Allow FDX on AUI only if explicitly chosen, 241 * not in autoselect mode. 242 */ 243 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5) 244 reg |= LE_B9_AUIFD; 245 else 246 reg &= ~LE_B9_AUIFD; 247 } else 248 reg &= ~LE_B9_FDEN; 249 le_pci_wrbcr(sc, LE_BCR9, reg); 250 251 return (0); 252 } 253 254 static void 255 le_pci_hwreset(struct lance_softc *sc) 256 { 257 258 /* 259 * Chip is stopped. Set software style to PCnet-PCI (32-bit). 260 * Actually, am79900.c implements ILACC support (hence its 261 * name) but unfortunately VMware does not. As far as this 262 * driver is concerned that should not make a difference 263 * though, as the settings used have the same meaning for 264 * both, ILACC and PCnet-PCI (note that there would be a 265 * difference for the ADD_FCS/NO_FCS bit if used). 266 */ 267 le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2); 268 } 269 270 static void 271 le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error) 272 { 273 struct lance_softc *sc = (struct lance_softc *)xsc; 274 275 if (error != 0) 276 return; 277 KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__)); 278 sc->sc_addr = segs[0].ds_addr; 279 } 280 281 static int 282 le_pci_probe(device_t dev) 283 { 284 285 if (pci_get_vendor(dev) != AMD_VENDOR) 286 return (ENXIO); 287 288 switch (pci_get_device(dev)) { 289 case AMD_PCNET_PCI: 290 device_set_desc(dev, "AMD PCnet-PCI"); 291 /* Let pcn(4) win. */ 292 return (BUS_PROBE_LOW_PRIORITY); 293 case AMD_PCNET_HOME: 294 device_set_desc(dev, "AMD PCnet-Home"); 295 /* Let pcn(4) win. */ 296 return (BUS_PROBE_LOW_PRIORITY); 297 default: 298 return (ENXIO); 299 } 300 } 301 302 static int 303 le_pci_attach(device_t dev) 304 { 305 struct le_pci_softc *lesc; 306 struct lance_softc *sc; 307 int error, i; 308 309 lesc = device_get_softc(dev); 310 sc = &lesc->sc_am79900.lsc; 311 312 LE_LOCK_INIT(sc, device_get_nameunit(dev)); 313 314 pci_enable_busmaster(dev); 315 316 i = PCIR_BAR(0); 317 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 318 &i, RF_ACTIVE); 319 if (lesc->sc_rres == NULL) { 320 device_printf(dev, "cannot allocate registers\n"); 321 error = ENXIO; 322 goto fail_mtx; 323 } 324 325 i = 0; 326 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, 327 &i, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 328 device_printf(dev, "cannot allocate interrupt\n"); 329 error = ENXIO; 330 goto fail_rres; 331 } 332 333 error = bus_dma_tag_create( 334 bus_get_dma_tag(dev), /* parent */ 335 1, 0, /* alignment, boundary */ 336 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 337 BUS_SPACE_MAXADDR, /* highaddr */ 338 NULL, NULL, /* filter, filterarg */ 339 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 340 0, /* nsegments */ 341 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 342 0, /* flags */ 343 NULL, NULL, /* lockfunc, lockarg */ 344 &lesc->sc_pdmat); 345 if (error != 0) { 346 device_printf(dev, "cannot allocate parent DMA tag\n"); 347 goto fail_ires; 348 } 349 350 sc->sc_memsize = PCNET_MEMSIZE; 351 /* 352 * For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte 353 * aligned and the ring descriptors must be 16-byte aligned when using 354 * a 32-bit software style. 355 */ 356 error = bus_dma_tag_create( 357 lesc->sc_pdmat, /* parent */ 358 16, 0, /* alignment, boundary */ 359 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 360 BUS_SPACE_MAXADDR, /* highaddr */ 361 NULL, NULL, /* filter, filterarg */ 362 sc->sc_memsize, /* maxsize */ 363 1, /* nsegments */ 364 sc->sc_memsize, /* maxsegsize */ 365 0, /* flags */ 366 NULL, NULL, /* lockfunc, lockarg */ 367 &lesc->sc_dmat); 368 if (error != 0) { 369 device_printf(dev, "cannot allocate buffer DMA tag\n"); 370 goto fail_pdtag; 371 } 372 373 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem, 374 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam); 375 if (error != 0) { 376 device_printf(dev, "cannot allocate DMA buffer memory\n"); 377 goto fail_dtag; 378 } 379 380 sc->sc_addr = 0; 381 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem, 382 sc->sc_memsize, le_pci_dma_callback, sc, 0); 383 if (error != 0 || sc->sc_addr == 0) { 384 device_printf(dev, "cannot load DMA buffer map\n"); 385 goto fail_dmem; 386 } 387 388 sc->sc_flags = LE_BSWAP; 389 sc->sc_conf3 = 0; 390 391 sc->sc_mediastatus = NULL; 392 switch (pci_get_device(dev)) { 393 case AMD_PCNET_HOME: 394 sc->sc_mediachange = le_pci_mediachange; 395 sc->sc_supmedia = le_home_supmedia; 396 sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int); 397 sc->sc_defaultmedia = le_home_supmedia[0]; 398 break; 399 default: 400 sc->sc_mediachange = le_pci_mediachange; 401 sc->sc_supmedia = le_pci_supmedia; 402 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int); 403 sc->sc_defaultmedia = le_pci_supmedia[0]; 404 } 405 406 /* 407 * Extract the physical MAC address from the ROM. 408 */ 409 bus_read_region_1(lesc->sc_rres, 0, sc->sc_enaddr, 410 sizeof(sc->sc_enaddr)); 411 412 sc->sc_copytodesc = lance_copytobuf_contig; 413 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 414 sc->sc_copytobuf = lance_copytobuf_contig; 415 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 416 sc->sc_zerobuf = lance_zerobuf_contig; 417 418 sc->sc_rdcsr = le_pci_rdcsr; 419 sc->sc_wrcsr = le_pci_wrcsr; 420 sc->sc_hwreset = le_pci_hwreset; 421 sc->sc_hwinit = NULL; 422 sc->sc_hwintr = NULL; 423 sc->sc_nocarrier = NULL; 424 425 error = am79900_config(&lesc->sc_am79900, device_get_name(dev), 426 device_get_unit(dev)); 427 if (error != 0) { 428 device_printf(dev, "cannot attach Am79900\n"); 429 goto fail_dmap; 430 } 431 432 error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE, 433 NULL, am79900_intr, sc, &lesc->sc_ih); 434 if (error != 0) { 435 device_printf(dev, "cannot set up interrupt\n"); 436 goto fail_am79900; 437 } 438 439 return (0); 440 441 fail_am79900: 442 am79900_detach(&lesc->sc_am79900); 443 fail_dmap: 444 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 445 fail_dmem: 446 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 447 fail_dtag: 448 bus_dma_tag_destroy(lesc->sc_dmat); 449 fail_pdtag: 450 bus_dma_tag_destroy(lesc->sc_pdmat); 451 fail_ires: 452 bus_release_resource(dev, SYS_RES_IRQ, 453 rman_get_rid(lesc->sc_ires), lesc->sc_ires); 454 fail_rres: 455 bus_release_resource(dev, SYS_RES_IOPORT, 456 rman_get_rid(lesc->sc_rres), lesc->sc_rres); 457 fail_mtx: 458 LE_LOCK_DESTROY(sc); 459 return (error); 460 } 461 462 static int 463 le_pci_detach(device_t dev) 464 { 465 struct le_pci_softc *lesc; 466 struct lance_softc *sc; 467 468 lesc = device_get_softc(dev); 469 sc = &lesc->sc_am79900.lsc; 470 471 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); 472 am79900_detach(&lesc->sc_am79900); 473 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 474 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 475 bus_dma_tag_destroy(lesc->sc_dmat); 476 bus_dma_tag_destroy(lesc->sc_pdmat); 477 bus_release_resource(dev, SYS_RES_IRQ, 478 rman_get_rid(lesc->sc_ires), lesc->sc_ires); 479 bus_release_resource(dev, SYS_RES_IOPORT, 480 rman_get_rid(lesc->sc_rres), lesc->sc_rres); 481 LE_LOCK_DESTROY(sc); 482 483 return (0); 484 } 485 486 static int 487 le_pci_suspend(device_t dev) 488 { 489 struct le_pci_softc *lesc; 490 491 lesc = device_get_softc(dev); 492 493 lance_suspend(&lesc->sc_am79900.lsc); 494 495 return (0); 496 } 497 498 static int 499 le_pci_resume(device_t dev) 500 { 501 struct le_pci_softc *lesc; 502 503 lesc = device_get_softc(dev); 504 505 lance_resume(&lesc->sc_am79900.lsc); 506 507 return (0); 508 } 509