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/param.h> 68#include <sys/systm.h> 69#include <sys/bus.h> 70#include <sys/endian.h> 71#include <sys/kernel.h> 72#include <sys/lock.h> 73#include <sys/module.h> 74#include <sys/mutex.h> 75#include <sys/resource.h> 76#include <sys/rman.h> 77#include <sys/socket.h> 78 79#include <net/ethernet.h> 80#include <net/if.h> 81#include <net/if_media.h> 82 83#include <machine/bus.h> 84#include <machine/resource.h> 85 86#include <dev/pci/pcireg.h> 87#include <dev/pci/pcivar.h> 88 89#include <dev/le/lancereg.h> 90#include <dev/le/lancevar.h> 91#include <dev/le/am79900var.h> 92 93#define AMD_VENDOR 0x1022 94#define AMD_PCNET_PCI 0x2000 95#define AMD_PCNET_HOME 0x2001 96#define PCNET_MEMSIZE (32*1024) 97#define PCNET_PCI_RDP 0x10 98#define PCNET_PCI_RAP 0x12 99#define PCNET_PCI_BDP 0x16 100 101struct le_pci_softc { 102 struct am79900_softc sc_am79900; /* glue to MI code */ 103 104 struct resource *sc_rres; 105 106 struct resource *sc_ires; 107 void *sc_ih; 108 109 bus_dma_tag_t sc_pdmat; 110 bus_dma_tag_t sc_dmat; 111 bus_dmamap_t sc_dmam; 112}; 113 114static device_probe_t le_pci_probe; 115static device_attach_t le_pci_attach; 116static device_detach_t le_pci_detach; 117static device_resume_t le_pci_resume; 118static device_suspend_t le_pci_suspend; 119 120static device_method_t le_pci_methods[] = { 121 /* Device interface */ 122 DEVMETHOD(device_probe, le_pci_probe), 123 DEVMETHOD(device_attach, le_pci_attach), 124 DEVMETHOD(device_detach, le_pci_detach), 125 /* We can just use the suspend method here. */ 126 DEVMETHOD(device_shutdown, le_pci_suspend), 127 DEVMETHOD(device_suspend, le_pci_suspend), 128 DEVMETHOD(device_resume, le_pci_resume), 129 130 { 0, 0 } 131}; 132 133DEFINE_CLASS_0(le, le_pci_driver, le_pci_methods, sizeof(struct le_pci_softc)); 134DRIVER_MODULE(le, pci, le_pci_driver, 0, 0); 135MODULE_DEPEND(le, ether, 1, 1, 1); 136 137static const int le_home_supmedia[] = { 138 IFM_MAKEWORD(IFM_ETHER, IFM_HPNA_1, 0, 0) 139}; 140 141static const int le_pci_supmedia[] = { 142 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 143 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, IFM_FDX, 0), 144 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, 0, 0), 145 IFM_MAKEWORD(IFM_ETHER, IFM_10_T, IFM_FDX, 0), 146 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, 0, 0), 147 IFM_MAKEWORD(IFM_ETHER, IFM_10_5, IFM_FDX, 0) 148}; 149 150static void le_pci_wrbcr(struct lance_softc *, uint16_t, uint16_t); 151static uint16_t le_pci_rdbcr(struct lance_softc *, uint16_t); 152static void le_pci_wrcsr(struct lance_softc *, uint16_t, uint16_t); 153static uint16_t le_pci_rdcsr(struct lance_softc *, uint16_t); 154static int le_pci_mediachange(struct lance_softc *); 155static void le_pci_hwreset(struct lance_softc *); 156static bus_dmamap_callback_t le_pci_dma_callback; 157 158static void 159le_pci_wrbcr(struct lance_softc *sc, uint16_t port, uint16_t val) 160{ 161 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 162 163 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 164 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 165 bus_write_2(lesc->sc_rres, PCNET_PCI_BDP, val); 166} 167 168static uint16_t 169le_pci_rdbcr(struct lance_softc *sc, uint16_t port) 170{ 171 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 172 173 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 174 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 175 return (bus_read_2(lesc->sc_rres, PCNET_PCI_BDP)); 176} 177 178static void 179le_pci_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 180{ 181 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 182 183 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 184 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 185 bus_write_2(lesc->sc_rres, PCNET_PCI_RDP, val); 186} 187 188static uint16_t 189le_pci_rdcsr(struct lance_softc *sc, uint16_t port) 190{ 191 struct le_pci_softc *lesc = (struct le_pci_softc *)sc; 192 193 bus_write_2(lesc->sc_rres, PCNET_PCI_RAP, port); 194 bus_barrier(lesc->sc_rres, PCNET_PCI_RAP, 2, BUS_SPACE_BARRIER_WRITE); 195 return (bus_read_2(lesc->sc_rres, PCNET_PCI_RDP)); 196} 197 198static int 199le_pci_mediachange(struct lance_softc *sc) 200{ 201 struct ifmedia *ifm = &sc->sc_media; 202 uint16_t reg; 203 204 if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) 205 return (EINVAL); 206 207 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) 208 le_pci_wrbcr(sc, LE_BCR49, 209 (le_pci_rdbcr(sc, LE_BCR49) & ~LE_B49_PHYSEL) | 0x1); 210 else if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) 211 le_pci_wrbcr(sc, LE_BCR2, 212 le_pci_rdbcr(sc, LE_BCR2) | LE_B2_ASEL); 213 else { 214 le_pci_wrbcr(sc, LE_BCR2, 215 le_pci_rdbcr(sc, LE_BCR2) & ~LE_B2_ASEL); 216 217 reg = le_pci_rdcsr(sc, LE_CSR15); 218 reg &= ~LE_C15_PORTSEL(LE_PORTSEL_MASK); 219 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_T) 220 reg |= LE_C15_PORTSEL(LE_PORTSEL_10T); 221 else 222 reg |= LE_C15_PORTSEL(LE_PORTSEL_AUI); 223 le_pci_wrcsr(sc, LE_CSR15, reg); 224 } 225 226 reg = le_pci_rdbcr(sc, LE_BCR9); 227 if (IFM_OPTIONS(ifm->ifm_media) & IFM_FDX) { 228 reg |= LE_B9_FDEN; 229 /* 230 * Allow FDX on AUI only if explicitly chosen, 231 * not in autoselect mode. 232 */ 233 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_10_5) 234 reg |= LE_B9_AUIFD; 235 else 236 reg &= ~LE_B9_AUIFD; 237 } else 238 reg &= ~LE_B9_FDEN; 239 le_pci_wrbcr(sc, LE_BCR9, reg); 240 241 return (0); 242} 243 244static void 245le_pci_hwreset(struct lance_softc *sc) 246{ 247 248 /* 249 * Chip is stopped. Set software style to PCnet-PCI (32-bit). 250 * Actually, am79900.c implements ILACC support (hence its 251 * name) but unfortunately VMware does not. As far as this 252 * driver is concerned that should not make a difference 253 * though, as the settings used have the same meaning for 254 * both, ILACC and PCnet-PCI (note that there would be a 255 * difference for the ADD_FCS/NO_FCS bit if used). 256 */ 257 le_pci_wrbcr(sc, LE_BCR20, LE_B20_SSTYLE_PCNETPCI2); 258} 259 260static void 261le_pci_dma_callback(void *xsc, bus_dma_segment_t *segs, int nsegs, int error) 262{ 263 struct lance_softc *sc = (struct lance_softc *)xsc; 264 265 if (error != 0) 266 return; 267 KASSERT(nsegs == 1, ("%s: bad DMA segment count", __func__)); 268 sc->sc_addr = segs[0].ds_addr; 269} 270 271static int 272le_pci_probe(device_t dev) 273{ 274 275 if (pci_get_vendor(dev) != AMD_VENDOR) 276 return (ENXIO); 277 278 switch (pci_get_device(dev)) { 279 case AMD_PCNET_PCI: 280 device_set_desc(dev, "AMD PCnet-PCI"); 281 /* Let pcn(4) win. */ 282 return (BUS_PROBE_LOW_PRIORITY); 283 case AMD_PCNET_HOME: 284 device_set_desc(dev, "AMD PCnet-Home"); 285 /* Let pcn(4) win. */ 286 return (BUS_PROBE_LOW_PRIORITY); 287 default: 288 return (ENXIO); 289 } 290} 291 292static int 293le_pci_attach(device_t dev) 294{ 295 struct le_pci_softc *lesc; 296 struct lance_softc *sc; 297 int error, i; 298 299 lesc = device_get_softc(dev); 300 sc = &lesc->sc_am79900.lsc; 301 302 LE_LOCK_INIT(sc, device_get_nameunit(dev)); 303 304 pci_enable_busmaster(dev); 305 306 i = PCIR_BAR(0); 307 lesc->sc_rres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 308 &i, RF_ACTIVE); 309 if (lesc->sc_rres == NULL) { 310 device_printf(dev, "cannot allocate registers\n"); 311 error = ENXIO; 312 goto fail_mtx; 313 } 314 315 i = 0; 316 if ((lesc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, 317 &i, RF_SHAREABLE | RF_ACTIVE)) == NULL) { 318 device_printf(dev, "cannot allocate interrupt\n"); 319 error = ENXIO; 320 goto fail_rres; 321 } 322 323 error = bus_dma_tag_create( 324 bus_get_dma_tag(dev), /* parent */ 325 1, 0, /* alignment, boundary */ 326 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 327 BUS_SPACE_MAXADDR, /* highaddr */ 328 NULL, NULL, /* filter, filterarg */ 329 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 330 0, /* nsegments */ 331 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 332 0, /* flags */ 333 NULL, NULL, /* lockfunc, lockarg */ 334 &lesc->sc_pdmat); 335 if (error != 0) { 336 device_printf(dev, "cannot allocate parent DMA tag\n"); 337 goto fail_ires; 338 } 339 340 sc->sc_memsize = PCNET_MEMSIZE; 341 /* 342 * For Am79C970A, Am79C971 and Am79C978 the init block must be 2-byte 343 * aligned and the ring descriptors must be 16-byte aligned when using 344 * a 32-bit software style. 345 */ 346 error = bus_dma_tag_create( 347 lesc->sc_pdmat, /* parent */ 348 16, 0, /* alignment, boundary */ 349 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 350 BUS_SPACE_MAXADDR, /* highaddr */ 351 NULL, NULL, /* filter, filterarg */ 352 sc->sc_memsize, /* maxsize */ 353 1, /* nsegments */ 354 sc->sc_memsize, /* maxsegsize */ 355 0, /* flags */ 356 NULL, NULL, /* lockfunc, lockarg */ 357 &lesc->sc_dmat); 358 if (error != 0) { 359 device_printf(dev, "cannot allocate buffer DMA tag\n"); 360 goto fail_pdtag; 361 } 362 363 error = bus_dmamem_alloc(lesc->sc_dmat, (void **)&sc->sc_mem, 364 BUS_DMA_WAITOK | BUS_DMA_COHERENT, &lesc->sc_dmam); 365 if (error != 0) { 366 device_printf(dev, "cannot allocate DMA buffer memory\n"); 367 goto fail_dtag; 368 } 369 370 sc->sc_addr = 0; 371 error = bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmam, sc->sc_mem, 372 sc->sc_memsize, le_pci_dma_callback, sc, 0); 373 if (error != 0 || sc->sc_addr == 0) { 374 device_printf(dev, "cannot load DMA buffer map\n"); 375 goto fail_dmem; 376 } 377 378 sc->sc_flags = LE_BSWAP; 379 sc->sc_conf3 = 0; 380 381 sc->sc_mediastatus = NULL; 382 switch (pci_get_device(dev)) { 383 case AMD_PCNET_HOME: 384 sc->sc_mediachange = le_pci_mediachange; 385 sc->sc_supmedia = le_home_supmedia; 386 sc->sc_nsupmedia = sizeof(le_home_supmedia) / sizeof(int); 387 sc->sc_defaultmedia = le_home_supmedia[0]; 388 break; 389 default: 390 sc->sc_mediachange = le_pci_mediachange; 391 sc->sc_supmedia = le_pci_supmedia; 392 sc->sc_nsupmedia = sizeof(le_pci_supmedia) / sizeof(int); 393 sc->sc_defaultmedia = le_pci_supmedia[0]; 394 } 395 396 /* 397 * Extract the physical MAC address from the ROM. 398 */ 399 bus_read_region_1(lesc->sc_rres, 0, sc->sc_enaddr, 400 sizeof(sc->sc_enaddr)); 401 402 sc->sc_copytodesc = lance_copytobuf_contig; 403 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 404 sc->sc_copytobuf = lance_copytobuf_contig; 405 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 406 sc->sc_zerobuf = lance_zerobuf_contig; 407 408 sc->sc_rdcsr = le_pci_rdcsr; 409 sc->sc_wrcsr = le_pci_wrcsr; 410 sc->sc_hwreset = le_pci_hwreset; 411 sc->sc_hwinit = NULL; 412 sc->sc_hwintr = NULL; 413 sc->sc_nocarrier = NULL; 414 415 error = am79900_config(&lesc->sc_am79900, device_get_name(dev), 416 device_get_unit(dev)); 417 if (error != 0) { 418 device_printf(dev, "cannot attach Am79900\n"); 419 goto fail_dmap; 420 } 421 422 error = bus_setup_intr(dev, lesc->sc_ires, INTR_TYPE_NET | INTR_MPSAFE, 423 NULL, am79900_intr, sc, &lesc->sc_ih); 424 if (error != 0) { 425 device_printf(dev, "cannot set up interrupt\n"); 426 goto fail_am79900; 427 } 428 429 return (0); 430 431 fail_am79900: 432 am79900_detach(&lesc->sc_am79900); 433 fail_dmap: 434 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 435 fail_dmem: 436 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 437 fail_dtag: 438 bus_dma_tag_destroy(lesc->sc_dmat); 439 fail_pdtag: 440 bus_dma_tag_destroy(lesc->sc_pdmat); 441 fail_ires: 442 bus_release_resource(dev, SYS_RES_IRQ, 443 rman_get_rid(lesc->sc_ires), lesc->sc_ires); 444 fail_rres: 445 bus_release_resource(dev, SYS_RES_IOPORT, 446 rman_get_rid(lesc->sc_rres), lesc->sc_rres); 447 fail_mtx: 448 LE_LOCK_DESTROY(sc); 449 return (error); 450} 451 452static int 453le_pci_detach(device_t dev) 454{ 455 struct le_pci_softc *lesc; 456 struct lance_softc *sc; 457 458 lesc = device_get_softc(dev); 459 sc = &lesc->sc_am79900.lsc; 460 461 bus_teardown_intr(dev, lesc->sc_ires, lesc->sc_ih); 462 am79900_detach(&lesc->sc_am79900); 463 bus_dmamap_unload(lesc->sc_dmat, lesc->sc_dmam); 464 bus_dmamem_free(lesc->sc_dmat, sc->sc_mem, lesc->sc_dmam); 465 bus_dma_tag_destroy(lesc->sc_dmat); 466 bus_dma_tag_destroy(lesc->sc_pdmat); 467 bus_release_resource(dev, SYS_RES_IRQ, 468 rman_get_rid(lesc->sc_ires), lesc->sc_ires); 469 bus_release_resource(dev, SYS_RES_IOPORT, 470 rman_get_rid(lesc->sc_rres), lesc->sc_rres); 471 LE_LOCK_DESTROY(sc); 472 473 return (0); 474} 475 476static int 477le_pci_suspend(device_t dev) 478{ 479 struct le_pci_softc *lesc; 480 481 lesc = device_get_softc(dev); 482 483 lance_suspend(&lesc->sc_am79900.lsc); 484 485 return (0); 486} 487 488static int 489le_pci_resume(device_t dev) 490{ 491 struct le_pci_softc *lesc; 492 493 lesc = device_get_softc(dev); 494 495 lance_resume(&lesc->sc_am79900.lsc); 496 497 return (0); 498} 499