1 /* $NetBSD: if_le_pci.c,v 1.43 2005/12/11 12:22:49 christos Exp $ */ 2 /* $FreeBSD: src/sys/dev/le/if_le_pci.c,v 1.4 2006/06/05 15:14:14 marius Exp $ */ 3 /* $DragonFly: src/sys/dev/netif/lnc/if_lnc_pci.c,v 1.12 2008/05/14 11:59:20 sephe Exp $ */ 4 5 6 /*- 7 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 12 * Simulation Facility, NASA Ames Research Center. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. All advertising materials mentioning features or use of this software 23 * must display the following acknowledgement: 24 * This product includes software developed by the NetBSD 25 * Foundation, Inc. and its contributors. 26 * 4. Neither the name of The NetBSD Foundation nor the names of its 27 * contributors may be used to endorse or promote products derived 28 * from this software without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 31 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 32 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 33 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 34 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 38 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 40 * POSSIBILITY OF SUCH DAMAGE. 41 */ 42 43 /*- 44 * Copyright (c) 1992, 1993 45 * The Regents of the University of California. All rights reserved. 46 * 47 * This code is derived from software contributed to Berkeley by 48 * Ralph Campbell and Rick Macklem. 49 * 50 * Redistribution and use in source and binary forms, with or without 51 * modification, are permitted provided that the following conditions 52 * are met: 53 * 1. Redistributions of source code must retain the above copyright 54 * notice, this list of conditions and the following disclaimer. 55 * 2. Redistributions in binary form must reproduce the above copyright 56 * notice, this list of conditions and the following disclaimer in the 57 * documentation and/or other materials provided with the distribution. 58 * 3. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 75 */ 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/interrupt.h> 83 #include <sys/lock.h> 84 #include <sys/module.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 #include <net/if_arp.h> 93 94 #include <bus/pci/pcireg.h> 95 #include <bus/pci/pcivar.h> 96 97 #include <dev/netif/lnc/lancereg.h> 98 #include <dev/netif/lnc/lancevar.h> 99 #include <dev/netif/lnc/am79900var.h> 100 101 #define AMD_VENDOR 0x1022 102 #define AMD_PCNET_PCI 0x2000 103 #define AMD_PCNET_HOME 0x2001 104 #define PCNET_MEMSIZE (32*1024) 105 #define PCNET_PCI_RDP 0x10 106 #define PCNET_PCI_RAP 0x12 107 #define PCNET_PCI_BDP 0x16 108 109 #define LNC_PROBE_PRIORITY -100 110 111 struct le_pci_softc { 112 struct am79900_softc sc_am79900; /* glue to MI code */ 113 114 int sc_rrid; 115 struct resource *sc_rres; 116 bus_space_tag_t sc_regt; 117 bus_space_handle_t sc_regh; 118 119 int sc_irid; 120 struct resource *sc_ires; 121 void *sc_ih; 122 123 bus_dma_tag_t sc_pdmat; 124 bus_dma_tag_t sc_dmat; 125 bus_dmamap_t sc_dmam; 126 }; 127 128 static device_probe_t le_pci_probe; 129 static device_attach_t le_pci_attach; 130 static device_detach_t le_pci_detach; 131 static device_resume_t le_pci_resume; 132 static device_suspend_t le_pci_suspend; 133 134 static device_method_t le_pci_methods[] = { 135 /* Device interface */ 136 DEVMETHOD(device_probe, le_pci_probe), 137 DEVMETHOD(device_attach, le_pci_attach), 138 DEVMETHOD(device_detach, le_pci_detach), 139 /* We can just use the suspend method here. */ 140 DEVMETHOD(device_shutdown, le_pci_suspend), 141 DEVMETHOD(device_suspend, le_pci_suspend), 142 DEVMETHOD(device_resume, le_pci_resume), 143 144 { 0, 0 } 145 }; 146 147 DEFINE_CLASS_0(lnc, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc)); 148 DRIVER_MODULE(lnc, pci, le_pci_driver, le_devclass, 0, 0); 149 MODULE_DEPEND(lnc, ether, 1, 1, 1); 150 151 static const int le_home_supmedia[] = { 152 IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0) 153 }; 154 155 static const int le_pci_supmedia[] = { 156 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 157 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0), 158 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0), 159 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0), 160 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0), 161 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0) 162 }; 163 164 static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t); 165 static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t); 166 static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t); 167 static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t); 168 static int le_pci_mediachange(struct lance_softc *); 169 static void le_pci_hwreset(struct lance_softc *); 170 static bus_dmamap_callback_t le_pci_dma_callback; 171 172 static void 173 le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val) 174 { 175 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 176 177 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, port); 178 bus_space_barrier(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, 2, 179 BUS_SPACE_BARRIER_WRITE); 180 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_BDP, val); 181 } 182 183 static uint16_t 184 le_pci_rdbcr(struct lance_softc *sc, uint16_t port) 185 { 186 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 187 188 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, port); 189 bus_space_barrier(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, 2, 190 BUS_SPACE_BARRIER_WRITE); 191 return (bus_space_read_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_BDP)); 192 } 193 194 static void 195 le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 196 { 197 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 198 199 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, port); 200 bus_space_barrier(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, 2, 201 BUS_SPACE_BARRIER_WRITE); 202 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RDP, val); 203 } 204 205 static uint16_t 206 le_pci_rdcsr(struct lance_softc *sc, uint16_t port) 207 { 208 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 209 210 bus_space_write_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, port); 211 bus_space_barrier(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RAP, 2, 212 BUS_SPACE_BARRIER_WRITE); 213 return (bus_space_read_2(lesc->sc_regt, lesc->sc_regh, PCNET_PCI_RDP)); 214 } 215 216 static int 217 le_pci_mediachange(struct lance_softc *sc) 218 { 219 struct ifmedia *ifm = &sc->sc_media; 220 uint16_t reg; 221 222 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 223 return (EINVAL); 224 225 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) 226 le_pci_wrbcr(sc, LE_BCR49, 227 (le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1); 228 else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) 229 le_pci_wrbcr(sc, LE_BCR2, 230 le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL); 231 else { 232 le_pci_wrbcr(sc, LE_BCR2, 233 le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL); 234 235 reg = le_pci_rdcsr(sc, LE_CSR15); 236 reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK); 237 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T) 238 reg |= LE_C15_PORTSEL(LE_PORTSEL_10T); 239 else 240 reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI); 241 le_pci_wrcsr(sc, LE_CSR15, reg); 242 } 243 244 reg = le_pci_rdbcr(sc, LE_BCR9); 245 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) { 246 reg |= LE_B9_FDEN; 247 /* 248 * Allow FDX on AUI only if explicitly chosen, 249 * not in autoselect mode. 250 */ 251 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5) 252 reg |= LE_B9_AUIFD; 253 else 254 reg &= ~LE_B9_AUIFD; 255 } else 256 reg &= ~LE_B9_FDEN; 257 le_pci_wrbcr(sc, LE_BCR9, reg); 258 259 return (0); 260 } 261 262 static void 263 le_pci_hwreset(struct lance_softc *sc) 264 { 265 266 /* 267 * Chip is stopped. Set software style to PCnet-PCI (32-bit). 268 * Actually, am79900.c implements ILACC support (hence its 269 * name) but unfortunately VMware does not. As far as this 270 * driver is concerned that should not make a difference 271 * though, as the settings used have the same meaning for 272 * both, ILACC and PCnet-PCI (note that there would be a 273 * difference for the ADD_FCS/NO_FCS bit if used). 274 */ 275 le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2); 276 } 277 278 static void 279 le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error) 280 { 281 struct lance_softc *sc = (struct lance_softc *)xsc; 282 283 if (error != 0) 284 return; 285 KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__)); 286 sc->sc_addr = segs[0].ds_addr; 287 } 288 289 static int 290 le_pci_probe(device_t dev) 291 { 292 293 if (pci_get_vendor(dev) != AMD_VENDOR) 294 return (ENXIO); 295 296 switch (pci_get_device(dev)) { 297 case AMD_PCNET_PCI: 298 device_set_desc(dev, "AMD PCnet-PCI"); 299 /* Let pcn(4) win. */ 300 return (LNC_PROBE_PRIORITY); 301 case AMD_PCNET_HOME: 302 device_set_desc(dev, "AMD PCnet-Home"); 303 /* Let pcn(4) win. */ 304 return (LNC_PROBE_PRIORITY); 305 default: 306 return (ENXIO); 307 } 308 } 309 310 static int 311 le_pci_attach(device_t dev) 312 { 313 struct le_pci_softc *lesc; 314 struct lance_softc *sc; 315 int error, i; 316 317 lesc = device_get_softc(dev); 318 sc = &lesc->sc_am79900.lsc; 319 320 pci_enable_busmaster(dev); 321 pci_enable_io(dev, PCIM_CMD_PORTEN); 322 323 lesc->sc_rrid = PCIR_BAR(0); 324 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 325 &lesc->sc_rrid, RF_ACTIVE); 326 if (lesc->sc_rres == NULL) { 327 device_printf(dev, "cannot allocate registers\n"); 328 error = ENXIO; 329 goto fail_mtx; 330 } 331 lesc->sc_regt = rman_get_bustag(lesc->sc_rres); 332 lesc->sc_regh = rman_get_bushandle(lesc->sc_rres); 333 334 lesc->sc_irid = 0; 335 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, 336 &lesc->sc_irid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 337 device_printf(dev, "cannot allocate interrupt\n"); 338 error = ENXIO; 339 goto fail_rres; 340 } 341 342 error = bus_dma_tag_create( 343 NULL, /* parent */ 344 1, 0, /* alignment, boundary */ 345 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 346 BUS_SPACE_MAXADDR, /* highaddr */ 347 NULL, NULL, /* filter, filterarg */ 348 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 349 0, /* nsegments */ 350 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 351 BUS_DMA_WAITOK, /* flags */ 352 &lesc->sc_pdmat); 353 if (error != 0) { 354 device_printf(dev, "cannot allocate parent DMA tag\n"); 355 goto fail_ires; 356 } 357 358 sc->sc_memsize = PCNET_MEMSIZE; 359 /* 360 * For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte 361 * aligned and the ring descriptors must be 16-byte aligned when using 362 * a 32-bit software style. 363 */ 364 error = bus_dma_tag_create( 365 lesc->sc_pdmat, /* parent */ 366 16, 0, /* alignment, boundary */ 367 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 368 BUS_SPACE_MAXADDR, /* highaddr */ 369 NULL, NULL, /* filter, filterarg */ 370 sc->sc_memsize, /* maxsize */ 371 1, /* nsegments */ 372 sc->sc_memsize, /* maxsegsize */ 373 BUS_DMA_WAITOK, /* flags */ 374 &lesc->sc_dmat); 375 if (error != 0) { 376 device_printf(dev, "cannot allocate buffer DMA tag\n"); 377 goto fail_pdtag; 378 } 379 380 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem, 381 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam); 382 if (error != 0) { 383 device_printf(dev, "cannot allocate DMA buffer memory\n"); 384 goto fail_dtag; 385 } 386 387 sc->sc_addr = 0; 388 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem, 389 sc->sc_memsize, le_pci_dma_callback, sc, 0); 390 if (error != 0 || sc->sc_addr == 0) { 391 device_printf(dev, "cannot load DMA buffer map\n"); 392 goto fail_dmem; 393 } 394 395 sc->sc_flags = LE_BSWAP; 396 sc->sc_conf3 = 0; 397 398 sc->sc_mediastatus = NULL; 399 switch (pci_get_device(dev)) { 400 case AMD_PCNET_HOME: 401 sc->sc_mediachange = le_pci_mediachange; 402 sc->sc_supmedia = le_home_supmedia; 403 sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int); 404 sc->sc_defaultmedia = le_home_supmedia[0]; 405 break; 406 default: 407 sc->sc_mediachange = le_pci_mediachange; 408 sc->sc_supmedia = le_pci_supmedia; 409 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int); 410 sc->sc_defaultmedia = le_pci_supmedia[0]; 411 } 412 413 /* 414 * Extract the physical MAC address from the ROM. 415 */ 416 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 417 sc->sc_enaddr[i] = 418 bus_space_read_1(lesc->sc_regt, lesc->sc_regh, i); 419 420 sc->sc_copytodesc = lance_copytobuf_contig; 421 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 422 sc->sc_copytobuf = lance_copytobuf_contig; 423 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 424 sc->sc_zerobuf = lance_zerobuf_contig; 425 426 sc->sc_rdcsr = le_pci_rdcsr; 427 sc->sc_wrcsr = le_pci_wrcsr; 428 sc->sc_hwreset = le_pci_hwreset; 429 sc->sc_hwinit = NULL; 430 sc->sc_hwintr = NULL; 431 sc->sc_nocarrier = NULL; 432 433 error = am79900_config(&lesc->sc_am79900, device_get_name(dev), 434 device_get_unit(dev)); 435 if (error != 0) { 436 device_printf(dev, "cannot attach Am79900\n"); 437 goto fail_dmap; 438 } 439 440 error = bus_setup_intr(dev, lesc->sc_ires, INTR_NETSAFE | INTR_MPSAFE, 441 am79900_intr, sc, &lesc->sc_ih, sc->ifp->if_serializer); 442 if (error != 0) { 443 device_printf(dev, "cannot set up interrupt\n"); 444 goto fail_am79900; 445 } 446 447 sc->ifp->if_cpuid = ithread_cpuid(rman_get_start(lesc->sc_ires)); 448 KKASSERT(sc->ifp->if_cpuid >= 0 && sc->ifp->if_cpuid < ncpus); 449 450 return (0); 451 452 fail_am79900: 453 am79900_detach(&lesc->sc_am79900); 454 fail_dmap: 455 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 456 fail_dmem: 457 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 458 fail_dtag: 459 bus_dma_tag_destroy(lesc->sc_dmat); 460 fail_pdtag: 461 bus_dma_tag_destroy(lesc->sc_pdmat); 462 fail_ires: 463 bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires); 464 fail_rres: 465 bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres); 466 fail_mtx: 467 return (error); 468 } 469 470 static int 471 le_pci_detach(device_t dev) 472 { 473 struct le_pci_softc *lesc; 474 struct lance_softc *sc; 475 476 lesc = device_get_softc(dev); 477 sc = &lesc->sc_am79900.lsc; 478 479 if (device_is_attached(dev)) { 480 lwkt_serialize_enter(sc->ifp->if_serializer); 481 lance_stop(sc); 482 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); 483 lwkt_serialize_exit(sc->ifp->if_serializer); 484 485 am79900_detach(&lesc->sc_am79900); 486 } 487 488 if (lesc->sc_ires) 489 bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires); 490 if (lesc->sc_rres) 491 bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres); 492 if (lesc->sc_dmam) { 493 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 494 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 495 } 496 if (lesc->sc_dmat) 497 bus_dma_tag_destroy(lesc->sc_dmat); 498 if (lesc->sc_pdmat) 499 bus_dma_tag_destroy(lesc->sc_pdmat); 500 501 return (0); 502 } 503 504 static int 505 le_pci_suspend(device_t dev) 506 { 507 struct le_pci_softc *lesc; 508 509 lesc = device_get_softc(dev); 510 511 lance_suspend(&lesc->sc_am79900.lsc); 512 513 return (0); 514 } 515 516 static int 517 le_pci_resume(device_t dev) 518 { 519 struct le_pci_softc *lesc; 520 521 lesc = device_get_softc(dev); 522 523 lance_resume(&lesc->sc_am79900.lsc); 524 525 return (0); 526 } 527