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 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(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc)); 148 DRIVER_MODULE(le, pci, le_pci_driver, le_devclass, 0, 0); 149 MODULE_DEPEND(le, 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 (BUS_PROBE_LOW_PRIORITY); 301 case AMD_PCNET_HOME: 302 device_set_desc(dev, "AMD PCnet-Home"); 303 /* Let pcn(4) win. */ 304 return (BUS_PROBE_LOW_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 LE_LOCK_INIT(sc, device_get_nameunit(dev)); 321 322 pci_enable_busmaster(dev); 323 pci_enable_io(dev, PCIM_CMD_PORTEN); 324 325 lesc->sc_rrid = PCIR_BAR(0); 326 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 327 &lesc->sc_rrid, RF_ACTIVE); 328 if (lesc->sc_rres == NULL) { 329 device_printf(dev, "cannot allocate registers\n"); 330 error = ENXIO; 331 goto fail_mtx; 332 } 333 lesc->sc_regt = rman_get_bustag(lesc->sc_rres); 334 lesc->sc_regh = rman_get_bushandle(lesc->sc_rres); 335 336 lesc->sc_irid = 0; 337 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, 338 &lesc->sc_irid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 339 device_printf(dev, "cannot allocate interrupt\n"); 340 error = ENXIO; 341 goto fail_rres; 342 } 343 344 error = bus_dma_tag_create( 345 bus_get_dma_tag(dev), /* parent */ 346 1, 0, /* alignment, boundary */ 347 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 348 BUS_SPACE_MAXADDR, /* highaddr */ 349 NULL, NULL, /* filter, filterarg */ 350 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 351 0, /* nsegments */ 352 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 353 0, /* flags */ 354 NULL, NULL, /* lockfunc, lockarg */ 355 &lesc->sc_pdmat); 356 if (error != 0) { 357 device_printf(dev, "cannot allocate parent DMA tag\n"); 358 goto fail_ires; 359 } 360 361 sc->sc_memsize = PCNET_MEMSIZE; 362 /* 363 * For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte 364 * aligned and the ring descriptors must be 16-byte aligned when using 365 * a 32-bit software style. 366 */ 367 error = bus_dma_tag_create( 368 lesc->sc_pdmat, /* parent */ 369 16, 0, /* alignment, boundary */ 370 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 371 BUS_SPACE_MAXADDR, /* highaddr */ 372 NULL, NULL, /* filter, filterarg */ 373 sc->sc_memsize, /* maxsize */ 374 1, /* nsegments */ 375 sc->sc_memsize, /* maxsegsize */ 376 0, /* flags */ 377 NULL, NULL, /* lockfunc, lockarg */ 378 &lesc->sc_dmat); 379 if (error != 0) { 380 device_printf(dev, "cannot allocate buffer DMA tag\n"); 381 goto fail_pdtag; 382 } 383 384 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem, 385 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam); 386 if (error != 0) { 387 device_printf(dev, "cannot allocate DMA buffer memory\n"); 388 goto fail_dtag; 389 } 390 391 sc->sc_addr = 0; 392 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem, 393 sc->sc_memsize, le_pci_dma_callback, sc, 0); 394 if (error != 0 || sc->sc_addr == 0) { 395 device_printf(dev, "cannot load DMA buffer map\n"); 396 goto fail_dmem; 397 } 398 399 sc->sc_flags = LE_BSWAP; 400 sc->sc_conf3 = 0; 401 402 sc->sc_mediastatus = NULL; 403 switch (pci_get_device(dev)) { 404 case AMD_PCNET_HOME: 405 sc->sc_mediachange = le_pci_mediachange; 406 sc->sc_supmedia = le_home_supmedia; 407 sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int); 408 sc->sc_defaultmedia = le_home_supmedia[0]; 409 break; 410 default: 411 sc->sc_mediachange = le_pci_mediachange; 412 sc->sc_supmedia = le_pci_supmedia; 413 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int); 414 sc->sc_defaultmedia = le_pci_supmedia[0]; 415 } 416 417 /* 418 * Extract the physical MAC address from the ROM. 419 */ 420 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 421 sc->sc_enaddr[i] = 422 bus_space_read_1(lesc->sc_regt, lesc->sc_regh, i); 423 424 sc->sc_copytodesc = lance_copytobuf_contig; 425 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 426 sc->sc_copytobuf = lance_copytobuf_contig; 427 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 428 sc->sc_zerobuf = lance_zerobuf_contig; 429 430 sc->sc_rdcsr = le_pci_rdcsr; 431 sc->sc_wrcsr = le_pci_wrcsr; 432 sc->sc_hwreset = le_pci_hwreset; 433 sc->sc_hwinit = NULL; 434 sc->sc_hwintr = NULL; 435 sc->sc_nocarrier = NULL; 436 437 error = am79900_config(&lesc->sc_am79900, device_get_name(dev), 438 device_get_unit(dev)); 439 if (error != 0) { 440 device_printf(dev, "cannot attach Am79900\n"); 441 goto fail_dmap; 442 } 443 444 error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE, 445 NULL, am79900_intr, sc, &lesc->sc_ih); 446 if (error != 0) { 447 device_printf(dev, "cannot set up interrupt\n"); 448 goto fail_am79900; 449 } 450 451 return (0); 452 453 fail_am79900: 454 am79900_detach(&lesc->sc_am79900); 455 fail_dmap: 456 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 457 fail_dmem: 458 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 459 fail_dtag: 460 bus_dma_tag_destroy(lesc->sc_dmat); 461 fail_pdtag: 462 bus_dma_tag_destroy(lesc->sc_pdmat); 463 fail_ires: 464 bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires); 465 fail_rres: 466 bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres); 467 fail_mtx: 468 LE_LOCK_DESTROY(sc); 469 return (error); 470 } 471 472 static int 473 le_pci_detach(device_t dev) 474 { 475 struct le_pci_softc *lesc; 476 struct lance_softc *sc; 477 478 lesc = device_get_softc(dev); 479 sc = &lesc->sc_am79900.lsc; 480 481 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); 482 am79900_detach(&lesc->sc_am79900); 483 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 484 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 485 bus_dma_tag_destroy(lesc->sc_dmat); 486 bus_dma_tag_destroy(lesc->sc_pdmat); 487 bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires); 488 bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres); 489 LE_LOCK_DESTROY(sc); 490 491 return (0); 492 } 493 494 static int 495 le_pci_suspend(device_t dev) 496 { 497 struct le_pci_softc *lesc; 498 499 lesc = device_get_softc(dev); 500 501 lance_suspend(&lesc->sc_am79900.lsc); 502 503 return (0); 504 } 505 506 static int 507 le_pci_resume(device_t dev) 508 { 509 struct le_pci_softc *lesc; 510 511 lesc = device_get_softc(dev); 512 513 lance_resume(&lesc->sc_am79900.lsc); 514 515 return (0); 516 } 517