if_le_pci.c revision 263687
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 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33/*- 34 * Copyright (c) 1992, 1993 35 * The Regents of the University of California. All rights reserved. 36 * 37 * This code is derived from software contributed to Berkeley by 38 * Ralph Campbell and Rick Macklem. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 3. Neither the name of the University nor the names of its contributors 49 * may be used to endorse or promote products derived from this software 50 * without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 53 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 54 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 55 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 56 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 57 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 58 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 59 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 60 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 61 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 62 * SUCH DAMAGE. 63 * 64 * @(#)if_le.c 8.2 (Berkeley) 11/16/93 65 */ 66 67#include <sys/cdefs.h> 68__FBSDID("$FreeBSD: stable/10/sys/dev/le/if_le_pci.c 263687 2014-03-24 13:48:04Z emaste $"); 69 70#include <sys/param.h> 71#include <sys/systm.h> 72#include <sys/bus.h> 73#include <sys/endian.h> 74#include <sys/kernel.h> 75#include <sys/lock.h> 76#include <sys/module.h> 77#include <sys/mutex.h> 78#include <sys/resource.h> 79#include <sys/rman.h> 80#include <sys/socket.h> 81 82#include <net/ethernet.h> 83#include <net/if.h> 84#include <net/if_media.h> 85 86#include <machine/bus.h> 87#include <machine/resource.h> 88 89#include <dev/pci/pcireg.h> 90#include <dev/pci/pcivar.h> 91 92#include <dev/le/lancereg.h> 93#include <dev/le/lancevar.h> 94#include <dev/le/am79900var.h> 95 96#define AMD_VENDOR 0x1022 97#define AMD_PCNET_PCI 0x2000 98#define AMD_PCNET_HOME 0x2001 99#define PCNET_MEMSIZE (32*1024) 100#define PCNET_PCI_RDP 0x10 101#define PCNET_PCI_RAP 0x12 102#define PCNET_PCI_BDP 0x16 103 104struct le_pci_softc { 105 struct am79900_softc sc_am79900; /* glue to MI code */ 106 107 struct resource *sc_rres; 108 109 struct resource *sc_ires; 110 void *sc_ih; 111 112 bus_dma_tag_t sc_pdmat; 113 bus_dma_tag_t sc_dmat; 114 bus_dmamap_t sc_dmam; 115}; 116 117static device_probe_t le_pci_probe; 118static device_attach_t le_pci_attach; 119static device_detach_t le_pci_detach; 120static device_resume_t le_pci_resume; 121static device_suspend_t le_pci_suspend; 122 123static device_method_t le_pci_methods[] = { 124 /* Device interface */ 125 DEVMETHOD(device_probe, le_pci_probe), 126 DEVMETHOD(device_attach, le_pci_attach), 127 DEVMETHOD(device_detach, le_pci_detach), 128 /* We can just use the suspend method here. */ 129 DEVMETHOD(device_shutdown, le_pci_suspend), 130 DEVMETHOD(device_suspend, le_pci_suspend), 131 DEVMETHOD(device_resume, le_pci_resume), 132 133 { 0, 0 } 134}; 135 136DEFINE_CLASS_0(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc)); 137DRIVER_MODULE(le, pci, le_pci_driver, le_devclass, 0, 0); 138MODULE_DEPEND(le, ether, 1, 1, 1); 139 140static const int le_home_supmedia[] = { 141 IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0) 142}; 143 144static const int le_pci_supmedia[] = { 145 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 146 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0), 147 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0), 148 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0), 149 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0), 150 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0) 151}; 152 153static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t); 154static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t); 155static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t); 156static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t); 157static int le_pci_mediachange(struct lance_softc *); 158static void le_pci_hwreset(struct lance_softc *); 159static bus_dmamap_callback_t le_pci_dma_callback; 160 161static void 162le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val) 163{ 164 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 165 166 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 167 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 168 bus_write_2(lesc->sc_rres, PCNET_PCI_BDP, val); 169} 170 171static uint16_t 172le_pci_rdbcr(struct lance_softc *sc, uint16_t port) 173{ 174 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 175 176 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 177 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 178 return (bus_read_2(lesc->sc_rres, PCNET_PCI_BDP)); 179} 180 181static void 182le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 183{ 184 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 185 186 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 187 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 188 bus_write_2(lesc->sc_rres, PCNET_PCI_RDP, val); 189} 190 191static uint16_t 192le_pci_rdcsr(struct lance_softc *sc, uint16_t port) 193{ 194 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 195 196 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 197 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 198 return (bus_read_2(lesc->sc_rres, PCNET_PCI_RDP)); 199} 200 201static int 202le_pci_mediachange(struct lance_softc *sc) 203{ 204 struct ifmedia *ifm = &sc->sc_media; 205 uint16_t reg; 206 207 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 208 return (EINVAL); 209 210 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) 211 le_pci_wrbcr(sc, LE_BCR49, 212 (le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1); 213 else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) 214 le_pci_wrbcr(sc, LE_BCR2, 215 le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL); 216 else { 217 le_pci_wrbcr(sc, LE_BCR2, 218 le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL); 219 220 reg = le_pci_rdcsr(sc, LE_CSR15); 221 reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK); 222 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T) 223 reg |= LE_C15_PORTSEL(LE_PORTSEL_10T); 224 else 225 reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI); 226 le_pci_wrcsr(sc, LE_CSR15, reg); 227 } 228 229 reg = le_pci_rdbcr(sc, LE_BCR9); 230 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) { 231 reg |= LE_B9_FDEN; 232 /* 233 * Allow FDX on AUI only if explicitly chosen, 234 * not in autoselect mode. 235 */ 236 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5) 237 reg |= LE_B9_AUIFD; 238 else 239 reg &= ~LE_B9_AUIFD; 240 } else 241 reg &= ~LE_B9_FDEN; 242 le_pci_wrbcr(sc, LE_BCR9, reg); 243 244 return (0); 245} 246 247static void 248le_pci_hwreset(struct lance_softc *sc) 249{ 250 251 /* 252 * Chip is stopped. Set software style to PCnet-PCI (32-bit). 253 * Actually, am79900.c implements ILACC support (hence its 254 * name) but unfortunately VMware does not. As far as this 255 * driver is concerned that should not make a difference 256 * though, as the settings used have the same meaning for 257 * both, ILACC and PCnet-PCI (note that there would be a 258 * difference for the ADD_FCS/NO_FCS bit if used). 259 */ 260 le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2); 261} 262 263static void 264le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error) 265{ 266 struct lance_softc *sc = (struct lance_softc *)xsc; 267 268 if (error != 0) 269 return; 270 KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__)); 271 sc->sc_addr = segs[0].ds_addr; 272} 273 274static int 275le_pci_probe(device_t dev) 276{ 277 278 if (pci_get_vendor(dev) != AMD_VENDOR) 279 return (ENXIO); 280 281 switch (pci_get_device(dev)) { 282 case AMD_PCNET_PCI: 283 device_set_desc(dev, "AMD PCnet-PCI"); 284 /* Let pcn(4) win. */ 285 return (BUS_PROBE_LOW_PRIORITY); 286 case AMD_PCNET_HOME: 287 device_set_desc(dev, "AMD PCnet-Home"); 288 /* Let pcn(4) win. */ 289 return (BUS_PROBE_LOW_PRIORITY); 290 default: 291 return (ENXIO); 292 } 293} 294 295static int 296le_pci_attach(device_t dev) 297{ 298 struct le_pci_softc *lesc; 299 struct lance_softc *sc; 300 int error, i; 301 302 lesc = device_get_softc(dev); 303 sc = &lesc->sc_am79900.lsc; 304 305 LE_LOCK_INIT(sc, device_get_nameunit(dev)); 306 307 pci_enable_busmaster(dev); 308 309 i = PCIR_BAR(0); 310 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 311 &i, RF_ACTIVE); 312 if (lesc->sc_rres == NULL) { 313 device_printf(dev, "cannot allocate registers\n"); 314 error = ENXIO; 315 goto fail_mtx; 316 } 317 318 i = 0; 319 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, 320 &i, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 321 device_printf(dev, "cannot allocate interrupt\n"); 322 error = ENXIO; 323 goto fail_rres; 324 } 325 326 error = bus_dma_tag_create( 327 bus_get_dma_tag(dev), /* parent */ 328 1, 0, /* alignment, boundary */ 329 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 330 BUS_SPACE_MAXADDR, /* highaddr */ 331 NULL, NULL, /* filter, filterarg */ 332 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 333 0, /* nsegments */ 334 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 335 0, /* flags */ 336 NULL, NULL, /* lockfunc, lockarg */ 337 &lesc->sc_pdmat); 338 if (error != 0) { 339 device_printf(dev, "cannot allocate parent DMA tag\n"); 340 goto fail_ires; 341 } 342 343 sc->sc_memsize = PCNET_MEMSIZE; 344 /* 345 * For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte 346 * aligned and the ring descriptors must be 16-byte aligned when using 347 * a 32-bit software style. 348 */ 349 error = bus_dma_tag_create( 350 lesc->sc_pdmat, /* parent */ 351 16, 0, /* alignment, boundary */ 352 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 353 BUS_SPACE_MAXADDR, /* highaddr */ 354 NULL, NULL, /* filter, filterarg */ 355 sc->sc_memsize, /* maxsize */ 356 1, /* nsegments */ 357 sc->sc_memsize, /* maxsegsize */ 358 0, /* flags */ 359 NULL, NULL, /* lockfunc, lockarg */ 360 &lesc->sc_dmat); 361 if (error != 0) { 362 device_printf(dev, "cannot allocate buffer DMA tag\n"); 363 goto fail_pdtag; 364 } 365 366 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem, 367 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam); 368 if (error != 0) { 369 device_printf(dev, "cannot allocate DMA buffer memory\n"); 370 goto fail_dtag; 371 } 372 373 sc->sc_addr = 0; 374 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem, 375 sc->sc_memsize, le_pci_dma_callback, sc, 0); 376 if (error != 0 || sc->sc_addr == 0) { 377 device_printf(dev, "cannot load DMA buffer map\n"); 378 goto fail_dmem; 379 } 380 381 sc->sc_flags = LE_BSWAP; 382 sc->sc_conf3 = 0; 383 384 sc->sc_mediastatus = NULL; 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 bus_read_region_1(lesc->sc_rres, 0, sc->sc_enaddr, 403 sizeof(sc->sc_enaddr)); 404 405 sc->sc_copytodesc = lance_copytobuf_contig; 406 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 407 sc->sc_copytobuf = lance_copytobuf_contig; 408 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 409 sc->sc_zerobuf = lance_zerobuf_contig; 410 411 sc->sc_rdcsr = le_pci_rdcsr; 412 sc->sc_wrcsr = le_pci_wrcsr; 413 sc->sc_hwreset = le_pci_hwreset; 414 sc->sc_hwinit = NULL; 415 sc->sc_hwintr = NULL; 416 sc->sc_nocarrier = NULL; 417 418 error = am79900_config(&lesc->sc_am79900, device_get_name(dev), 419 device_get_unit(dev)); 420 if (error != 0) { 421 device_printf(dev, "cannot attach Am79900\n"); 422 goto fail_dmap; 423 } 424 425 error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE, 426 NULL, am79900_intr, sc, &lesc->sc_ih); 427 if (error != 0) { 428 device_printf(dev, "cannot set up interrupt\n"); 429 goto fail_am79900; 430 } 431 432 return (0); 433 434 fail_am79900: 435 am79900_detach(&lesc->sc_am79900); 436 fail_dmap: 437 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 438 fail_dmem: 439 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 440 fail_dtag: 441 bus_dma_tag_destroy(lesc->sc_dmat); 442 fail_pdtag: 443 bus_dma_tag_destroy(lesc->sc_pdmat); 444 fail_ires: 445 bus_release_resource(dev, SYS_RES_IRQ, 446 rman_get_rid(lesc->sc_ires), lesc->sc_ires); 447 fail_rres: 448 bus_release_resource(dev, SYS_RES_IOPORT, 449 rman_get_rid(lesc->sc_rres), lesc->sc_rres); 450 fail_mtx: 451 LE_LOCK_DESTROY(sc); 452 return (error); 453} 454 455static int 456le_pci_detach(device_t dev) 457{ 458 struct le_pci_softc *lesc; 459 struct lance_softc *sc; 460 461 lesc = device_get_softc(dev); 462 sc = &lesc->sc_am79900.lsc; 463 464 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); 465 am79900_detach(&lesc->sc_am79900); 466 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 467 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 468 bus_dma_tag_destroy(lesc->sc_dmat); 469 bus_dma_tag_destroy(lesc->sc_pdmat); 470 bus_release_resource(dev, SYS_RES_IRQ, 471 rman_get_rid(lesc->sc_ires), lesc->sc_ires); 472 bus_release_resource(dev, SYS_RES_IOPORT, 473 rman_get_rid(lesc->sc_rres), lesc->sc_rres); 474 LE_LOCK_DESTROY(sc); 475 476 return (0); 477} 478 479static int 480le_pci_suspend(device_t dev) 481{ 482 struct le_pci_softc *lesc; 483 484 lesc = device_get_softc(dev); 485 486 lance_suspend(&lesc->sc_am79900.lsc); 487 488 return (0); 489} 490 491static int 492le_pci_resume(device_t dev) 493{ 494 struct le_pci_softc *lesc; 495 496 lesc = device_get_softc(dev); 497 498 lance_resume(&lesc->sc_am79900.lsc); 499 500 return (0); 501} 502