1 /* $NetBSD: if_le_pci.c,v 1.43 2005/12/11 12:22:49 christos Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause AND BSD-3-Clause 5 * 6 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Charles M. Hannum and by Jason R. Thorpe of the Numerical Aerospace 11 * Simulation Facility, NASA Ames Research Center. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 /*- 36 * Copyright (c) 1992, 1993 37 * The Regents of the University of California. All rights reserved. 38 * 39 * This code is derived from software contributed to Berkeley by 40 * Ralph Campbell and Rick Macklem. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 */ 66 67 #include <sys/cdefs.h> 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/bus.h> 71 #include <sys/endian.h> 72 #include <sys/kernel.h> 73 #include <sys/lock.h> 74 #include <sys/module.h> 75 #include <sys/mutex.h> 76 #include <sys/resource.h> 77 #include <sys/rman.h> 78 #include <sys/socket.h> 79 80 #include <net/ethernet.h> 81 #include <net/if.h> 82 #include <net/if_media.h> 83 84 #include <machine/bus.h> 85 #include <machine/resource.h> 86 87 #include <dev/pci/pcireg.h> 88 #include <dev/pci/pcivar.h> 89 90 #include <dev/le/lancereg.h> 91 #include <dev/le/lancevar.h> 92 #include <dev/le/am79900var.h> 93 94 #define AMD_VENDOR 0x1022 95 #define AMD_PCNET_PCI 0x2000 96 #define AMD_PCNET_HOME 0x2001 97 #define PCNET_MEMSIZE (32*1024) 98 #define PCNET_PCI_RDP 0x10 99 #define PCNET_PCI_RAP 0x12 100 #define PCNET_PCI_BDP 0x16 101 102 struct le_pci_softc { 103 struct am79900_softc sc_am79900; /* glue to MI code */ 104 105 struct resource *sc_rres; 106 107 struct resource *sc_ires; 108 void *sc_ih; 109 110 bus_dma_tag_t sc_pdmat; 111 bus_dma_tag_t sc_dmat; 112 bus_dmamap_t sc_dmam; 113 }; 114 115 static device_probe_t le_pci_probe; 116 static device_attach_t le_pci_attach; 117 static device_detach_t le_pci_detach; 118 static device_resume_t le_pci_resume; 119 static device_suspend_t le_pci_suspend; 120 121 static device_method_t le_pci_methods[] = { 122 /* Device interface */ 123 DEVMETHOD(device_probe, le_pci_probe), 124 DEVMETHOD(device_attach, le_pci_attach), 125 DEVMETHOD(device_detach, le_pci_detach), 126 /* We can just use the suspend method here. */ 127 DEVMETHOD(device_shutdown, le_pci_suspend), 128 DEVMETHOD(device_suspend, le_pci_suspend), 129 DEVMETHOD(device_resume, le_pci_resume), 130 131 { 0, 0 } 132 }; 133 134 DEFINE_CLASS_0(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc)); 135 DRIVER_MODULE(le, pci, le_pci_driver, 0, 0); 136 MODULE_DEPEND(le, ether, 1, 1, 1); 137 138 static const int le_home_supmedia[] = { 139 IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0) 140 }; 141 142 static const int le_pci_supmedia[] = { 143 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 144 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0), 145 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0), 146 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0), 147 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0), 148 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0) 149 }; 150 151 static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t); 152 static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t); 153 static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t); 154 static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t); 155 static int le_pci_mediachange(struct lance_softc *); 156 static void le_pci_hwreset(struct lance_softc *); 157 static bus_dmamap_callback_t le_pci_dma_callback; 158 159 static void 160 le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val) 161 { 162 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 163 164 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 165 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 166 bus_write_2(lesc->sc_rres, PCNET_PCI_BDP, val); 167 } 168 169 static uint16_t 170 le_pci_rdbcr(struct lance_softc *sc, uint16_t port) 171 { 172 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 173 174 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 175 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 176 return (bus_read_2(lesc->sc_rres, PCNET_PCI_BDP)); 177 } 178 179 static void 180 le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 181 { 182 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 183 184 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 185 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 186 bus_write_2(lesc->sc_rres, PCNET_PCI_RDP, val); 187 } 188 189 static uint16_t 190 le_pci_rdcsr(struct lance_softc *sc, uint16_t port) 191 { 192 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 193 194 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 195 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 196 return (bus_read_2(lesc->sc_rres, PCNET_PCI_RDP)); 197 } 198 199 static int 200 le_pci_mediachange(struct lance_softc *sc) 201 { 202 struct ifmedia *ifm = &sc->sc_media; 203 uint16_t reg; 204 205 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 206 return (EINVAL); 207 208 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) 209 le_pci_wrbcr(sc, LE_BCR49, 210 (le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1); 211 else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) 212 le_pci_wrbcr(sc, LE_BCR2, 213 le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL); 214 else { 215 le_pci_wrbcr(sc, LE_BCR2, 216 le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL); 217 218 reg = le_pci_rdcsr(sc, LE_CSR15); 219 reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK); 220 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T) 221 reg |= LE_C15_PORTSEL(LE_PORTSEL_10T); 222 else 223 reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI); 224 le_pci_wrcsr(sc, LE_CSR15, reg); 225 } 226 227 reg = le_pci_rdbcr(sc, LE_BCR9); 228 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) { 229 reg |= LE_B9_FDEN; 230 /* 231 * Allow FDX on AUI only if explicitly chosen, 232 * not in autoselect mode. 233 */ 234 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5) 235 reg |= LE_B9_AUIFD; 236 else 237 reg &= ~LE_B9_AUIFD; 238 } else 239 reg &= ~LE_B9_FDEN; 240 le_pci_wrbcr(sc, LE_BCR9, reg); 241 242 return (0); 243 } 244 245 static void 246 le_pci_hwreset(struct lance_softc *sc) 247 { 248 249 /* 250 * Chip is stopped. Set software style to PCnet-PCI (32-bit). 251 * Actually, am79900.c implements ILACC support (hence its 252 * name) but unfortunately VMware does not. As far as this 253 * driver is concerned that should not make a difference 254 * though, as the settings used have the same meaning for 255 * both, ILACC and PCnet-PCI (note that there would be a 256 * difference for the ADD_FCS/NO_FCS bit if used). 257 */ 258 le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2); 259 } 260 261 static void 262 le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error) 263 { 264 struct lance_softc *sc = (struct lance_softc *)xsc; 265 266 if (error != 0) 267 return; 268 KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__)); 269 sc->sc_addr = segs[0].ds_addr; 270 } 271 272 static int 273 le_pci_probe(device_t dev) 274 { 275 276 if (pci_get_vendor(dev) != AMD_VENDOR) 277 return (ENXIO); 278 279 switch (pci_get_device(dev)) { 280 case AMD_PCNET_PCI: 281 device_set_desc(dev, "AMD PCnet-PCI"); 282 /* Let pcn(4) win. */ 283 return (BUS_PROBE_LOW_PRIORITY); 284 case AMD_PCNET_HOME: 285 device_set_desc(dev, "AMD PCnet-Home"); 286 /* Let pcn(4) win. */ 287 return (BUS_PROBE_LOW_PRIORITY); 288 default: 289 return (ENXIO); 290 } 291 } 292 293 static int 294 le_pci_attach(device_t dev) 295 { 296 struct le_pci_softc *lesc; 297 struct lance_softc *sc; 298 int error, i; 299 300 lesc = device_get_softc(dev); 301 sc = &lesc->sc_am79900.lsc; 302 303 LE_LOCK_INIT(sc, device_get_nameunit(dev)); 304 305 pci_enable_busmaster(dev); 306 307 i = PCIR_BAR(0); 308 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 309 &i, RF_ACTIVE); 310 if (lesc->sc_rres == NULL) { 311 device_printf(dev, "cannot allocate registers\n"); 312 error = ENXIO; 313 goto fail_mtx; 314 } 315 316 i = 0; 317 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, 318 &i, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 319 device_printf(dev, "cannot allocate interrupt\n"); 320 error = ENXIO; 321 goto fail_rres; 322 } 323 324 error = bus_dma_tag_create( 325 bus_get_dma_tag(dev), /* parent */ 326 1, 0, /* alignment, boundary */ 327 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 328 BUS_SPACE_MAXADDR, /* highaddr */ 329 NULL, NULL, /* filter, filterarg */ 330 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 331 0, /* nsegments */ 332 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 333 0, /* flags */ 334 NULL, NULL, /* lockfunc, lockarg */ 335 &lesc->sc_pdmat); 336 if (error != 0) { 337 device_printf(dev, "cannot allocate parent DMA tag\n"); 338 goto fail_ires; 339 } 340 341 sc->sc_memsize = PCNET_MEMSIZE; 342 /* 343 * For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte 344 * aligned and the ring descriptors must be 16-byte aligned when using 345 * a 32-bit software style. 346 */ 347 error = bus_dma_tag_create( 348 lesc->sc_pdmat, /* parent */ 349 16, 0, /* alignment, boundary */ 350 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 351 BUS_SPACE_MAXADDR, /* highaddr */ 352 NULL, NULL, /* filter, filterarg */ 353 sc->sc_memsize, /* maxsize */ 354 1, /* nsegments */ 355 sc->sc_memsize, /* maxsegsize */ 356 0, /* flags */ 357 NULL, NULL, /* lockfunc, lockarg */ 358 &lesc->sc_dmat); 359 if (error != 0) { 360 device_printf(dev, "cannot allocate buffer DMA tag\n"); 361 goto fail_pdtag; 362 } 363 364 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem, 365 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam); 366 if (error != 0) { 367 device_printf(dev, "cannot allocate DMA buffer memory\n"); 368 goto fail_dtag; 369 } 370 371 sc->sc_addr = 0; 372 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem, 373 sc->sc_memsize, le_pci_dma_callback, sc, 0); 374 if (error != 0 || sc->sc_addr == 0) { 375 device_printf(dev, "cannot load DMA buffer map\n"); 376 goto fail_dmem; 377 } 378 379 sc->sc_flags = LE_BSWAP; 380 sc->sc_conf3 = 0; 381 382 sc->sc_mediastatus = NULL; 383 switch (pci_get_device(dev)) { 384 case AMD_PCNET_HOME: 385 sc->sc_mediachange = le_pci_mediachange; 386 sc->sc_supmedia = le_home_supmedia; 387 sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int); 388 sc->sc_defaultmedia = le_home_supmedia[0]; 389 break; 390 default: 391 sc->sc_mediachange = le_pci_mediachange; 392 sc->sc_supmedia = le_pci_supmedia; 393 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int); 394 sc->sc_defaultmedia = le_pci_supmedia[0]; 395 } 396 397 /* 398 * Extract the physical MAC address from the ROM. 399 */ 400 bus_read_region_1(lesc->sc_rres, 0, sc->sc_enaddr, 401 sizeof(sc->sc_enaddr)); 402 403 sc->sc_copytodesc = lance_copytobuf_contig; 404 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 405 sc->sc_copytobuf = lance_copytobuf_contig; 406 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 407 sc->sc_zerobuf = lance_zerobuf_contig; 408 409 sc->sc_rdcsr = le_pci_rdcsr; 410 sc->sc_wrcsr = le_pci_wrcsr; 411 sc->sc_hwreset = le_pci_hwreset; 412 sc->sc_hwinit = NULL; 413 sc->sc_hwintr = NULL; 414 sc->sc_nocarrier = NULL; 415 416 error = am79900_config(&lesc->sc_am79900, device_get_name(dev), 417 device_get_unit(dev)); 418 if (error != 0) { 419 device_printf(dev, "cannot attach Am79900\n"); 420 goto fail_dmap; 421 } 422 423 error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE, 424 NULL, am79900_intr, sc, &lesc->sc_ih); 425 if (error != 0) { 426 device_printf(dev, "cannot set up interrupt\n"); 427 goto fail_am79900; 428 } 429 430 return (0); 431 432 fail_am79900: 433 am79900_detach(&lesc->sc_am79900); 434 fail_dmap: 435 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 436 fail_dmem: 437 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 438 fail_dtag: 439 bus_dma_tag_destroy(lesc->sc_dmat); 440 fail_pdtag: 441 bus_dma_tag_destroy(lesc->sc_pdmat); 442 fail_ires: 443 bus_release_resource(dev, SYS_RES_IRQ, 444 rman_get_rid(lesc->sc_ires), lesc->sc_ires); 445 fail_rres: 446 bus_release_resource(dev, SYS_RES_IOPORT, 447 rman_get_rid(lesc->sc_rres), lesc->sc_rres); 448 fail_mtx: 449 LE_LOCK_DESTROY(sc); 450 return (error); 451 } 452 453 static int 454 le_pci_detach(device_t dev) 455 { 456 struct le_pci_softc *lesc; 457 struct lance_softc *sc; 458 459 lesc = device_get_softc(dev); 460 sc = &lesc->sc_am79900.lsc; 461 462 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); 463 am79900_detach(&lesc->sc_am79900); 464 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 465 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 466 bus_dma_tag_destroy(lesc->sc_dmat); 467 bus_dma_tag_destroy(lesc->sc_pdmat); 468 bus_release_resource(dev, SYS_RES_IRQ, 469 rman_get_rid(lesc->sc_ires), lesc->sc_ires); 470 bus_release_resource(dev, SYS_RES_IOPORT, 471 rman_get_rid(lesc->sc_rres), lesc->sc_rres); 472 LE_LOCK_DESTROY(sc); 473 474 return (0); 475 } 476 477 static int 478 le_pci_suspend(device_t dev) 479 { 480 struct le_pci_softc *lesc; 481 482 lesc = device_get_softc(dev); 483 484 lance_suspend(&lesc->sc_am79900.lsc); 485 486 return (0); 487 } 488 489 static int 490 le_pci_resume(device_t dev) 491 { 492 struct le_pci_softc *lesc; 493 494 lesc = device_get_softc(dev); 495 496 lance_resume(&lesc->sc_am79900.lsc); 497 498 return (0); 499 } 500