if_le_pci.c revision 158647
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: head/sys/dev/le/if_le_pci.c 158647 2006-05-16 12:15:39Z ru $"); 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 16384 107#define PCNET_PCI_RDP 0x10 108#define PCNET_PCI_RAP 0x12 109#define PCNET_PCI_BDP 0x16 110 111struct 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 128static device_probe_t le_pci_probe; 129static device_attach_t le_pci_attach; 130static device_detach_t le_pci_detach; 131static device_resume_t le_pci_resume; 132static device_suspend_t le_pci_suspend; 133 134static 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 147DEFINE_CLASS_0(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc)); 148DRIVER_MODULE(le, pci, le_pci_driver, le_devclass, 0, 0); 149MODULE_DEPEND(le_DRIVER_NAME, ether, 1, 1, 1); 150 151static const int le_home_supmedia[] = { 152 IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0) 153}; 154 155static 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 164static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t); 165static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t); 166static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t); 167static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t); 168static int le_pci_mediachange(struct lance_softc *); 169static void le_pci_hwreset(struct lance_softc *); 170static bus_dmamap_callback_t le_pci_dma_callback; 171 172static void 173le_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 183static uint16_t 184le_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 194static void 195le_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 205static uint16_t 206le_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 216static int 217le_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 262static void 263le_pci_hwreset(struct lance_softc *sc) 264{ 265 266 /* Chip is stopped. Set "software style" to 32-bit. */ 267 le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2); 268} 269 270static void 271le_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 281static int 282le_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 case AMD_PCNET_HOME: 291 device_set_desc(dev, "AMD PCnet Ethernet"); 292 return (BUS_PROBE_DEFAULT); 293 default: 294 return (ENXIO); 295 } 296} 297 298static int 299le_pci_attach(device_t dev) 300{ 301 struct le_pci_softc *lesc; 302 struct lance_softc *sc; 303 int error, i; 304 305 lesc = device_get_softc(dev); 306 sc = &lesc->sc_am79900.lsc; 307 308 LE_LOCK_INIT(sc, device_get_nameunit(dev)); 309 310 pci_enable_busmaster(dev); 311 pci_enable_io(dev, PCIM_CMD_PORTEN); 312 313 lesc->sc_rrid = PCIR_BAR(0); 314 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 315 &lesc->sc_rrid, RF_ACTIVE); 316 if (lesc->sc_rres == NULL) { 317 device_printf(dev, "cannot allocate registers\n"); 318 error = ENXIO; 319 goto fail_mtx; 320 } 321 lesc->sc_regt = rman_get_bustag(lesc->sc_rres); 322 lesc->sc_regh = rman_get_bushandle(lesc->sc_rres); 323 324 lesc->sc_irid = 0; 325 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, 326 &lesc->sc_irid, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 327 device_printf(dev, "cannot allocate interrupt\n"); 328 error = ENXIO; 329 goto fail_rres; 330 } 331 332 error = bus_dma_tag_create( 333 NULL, /* parent */ 334 PAGE_SIZE, 0, /* alignment, boundary */ 335 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 336 BUS_SPACE_MAXADDR, /* highaddr */ 337 NULL, NULL, /* filter, filterarg */ 338 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 339 0, /* nsegments */ 340 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 341 BUS_DMA_WAITOK, /* flags */ 342 NULL, NULL, /* lockfunc, lockarg */ 343 &lesc->sc_pdmat); 344 if (error != 0) { 345 device_printf(dev, "cannot allocate parent DMA tag\n"); 346 goto fail_ires; 347 } 348 349 sc->sc_memsize = PCNET_MEMSIZE; 350 error = bus_dma_tag_create( 351 lesc->sc_pdmat, /* parent */ 352 1, 0, /* alignment, boundary */ 353 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 354 BUS_SPACE_MAXADDR, /* highaddr */ 355 NULL, NULL, /* filter, filterarg */ 356 sc->sc_memsize, /* maxsize */ 357 1, /* nsegments */ 358 sc->sc_memsize, /* maxsegsize */ 359 BUS_DMA_WAITOK, /* flags */ 360 NULL, NULL, /* lockfunc, lockarg */ 361 &lesc->sc_dmat); 362 if (error != 0) { 363 device_printf(dev, "cannot allocate buffer DMA tag\n"); 364 goto fail_pdtag; 365 } 366 367 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem, 368 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam); 369 if (error != 0) { 370 device_printf(dev, "cannot allocate DMA buffer memory\n"); 371 goto fail_dtag; 372 } 373 374 sc->sc_addr = 0; 375 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem, 376 sc->sc_memsize, le_pci_dma_callback, sc, 0); 377 if (error != 0 || sc->sc_addr == 0) { 378 device_printf(dev, "cannot load DMA buffer map\n"); 379 goto fail_dmem; 380 } 381 382 sc->sc_flags = LE_BSWAP; 383 sc->sc_conf3 = 0; 384 385 switch (pci_get_device(dev)) { 386 case AMD_PCNET_HOME: 387 sc->sc_mediachange = le_pci_mediachange; 388 sc->sc_supmedia = le_home_supmedia; 389 sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int); 390 sc->sc_defaultmedia = le_home_supmedia[0]; 391 break; 392 default: 393 sc->sc_mediachange = le_pci_mediachange; 394 sc->sc_supmedia = le_pci_supmedia; 395 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int); 396 sc->sc_defaultmedia = le_pci_supmedia[0]; 397 } 398 399 /* 400 * Extract the physical MAC address from the ROM. 401 */ 402 for (i = 0; i < sizeof(sc->sc_enaddr); i++) 403 sc->sc_enaddr[i] = 404 bus_space_read_1(lesc->sc_regt, lesc->sc_regh, i); 405 406 sc->sc_copytodesc = lance_copytobuf_contig; 407 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 408 sc->sc_copytobuf = lance_copytobuf_contig; 409 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 410 sc->sc_zerobuf = lance_zerobuf_contig; 411 412 sc->sc_rdcsr = le_pci_rdcsr; 413 sc->sc_wrcsr = le_pci_wrcsr; 414 sc->sc_hwreset = le_pci_hwreset; 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 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, lesc->sc_irid, lesc->sc_ires); 444 fail_rres: 445 bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres); 446 fail_mtx: 447 LE_LOCK_DESTROY(sc); 448 return (error); 449} 450 451static int 452le_pci_detach(device_t dev) 453{ 454 struct le_pci_softc *lesc; 455 struct lance_softc *sc; 456 457 lesc = device_get_softc(dev); 458 sc = &lesc->sc_am79900.lsc; 459 460 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); 461 am79900_detach(&lesc->sc_am79900); 462 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 463 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 464 bus_dma_tag_destroy(lesc->sc_dmat); 465 bus_dma_tag_destroy(lesc->sc_pdmat); 466 bus_release_resource(dev, SYS_RES_IRQ, lesc->sc_irid, lesc->sc_ires); 467 bus_release_resource(dev, SYS_RES_IOPORT, lesc->sc_rrid, lesc->sc_rres); 468 LE_LOCK_DESTROY(sc); 469 470 return (0); 471} 472 473static int 474le_pci_suspend(device_t dev) 475{ 476 struct le_pci_softc *lesc; 477 478 lesc = device_get_softc(dev); 479 480 lance_suspend(&lesc->sc_am79900.lsc); 481 482 return (0); 483} 484 485static int 486le_pci_resume(device_t dev) 487{ 488 struct le_pci_softc *lesc; 489 490 lesc = device_get_softc(dev); 491 492 lance_resume(&lesc->sc_am79900.lsc); 493 494 return (0); 495} 496