if_dc_pci.c revision 1.30
1/* $OpenBSD: if_dc_pci.c,v 1.30 2002/04/01 18:41:47 nate Exp $ */ 2 3/* 4 * Copyright (c) 1997, 1998, 1999 5 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 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 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 * 34 * $FreeBSD: src/sys/pci/if_dc.c,v 1.5 2000/01/12 22:24:05 wpaul Exp $ 35 */ 36 37#include "bpfilter.h" 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/mbuf.h> 42#include <sys/protosw.h> 43#include <sys/socket.h> 44#include <sys/ioctl.h> 45#include <sys/errno.h> 46#include <sys/malloc.h> 47#include <sys/kernel.h> 48#include <sys/device.h> 49 50#include <net/if.h> 51#include <net/if_dl.h> 52#include <net/if_types.h> 53 54#ifdef INET 55#include <netinet/in.h> 56#include <netinet/in_systm.h> 57#include <netinet/in_var.h> 58#include <netinet/ip.h> 59#include <netinet/if_ether.h> 60#endif 61 62#include <net/if_media.h> 63 64#if NBPFILTER > 0 65#include <net/bpf.h> 66#endif 67 68#include <dev/mii/mii.h> 69#include <dev/mii/miivar.h> 70 71#include <dev/pci/pcireg.h> 72#include <dev/pci/pcivar.h> 73#include <dev/pci/pcidevs.h> 74 75#ifdef __sparc64__ 76#include <dev/ofw/openfirm.h> 77#endif 78 79#define DC_USEIOSPACE 80 81#include <dev/ic/dcreg.h> 82 83/* 84 * Various supported device vendors/types and their names. 85 */ 86struct dc_type dc_devs[] = { 87 { PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21140 }, 88 { PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21142 }, 89 { PCI_VENDOR_DAVICOM, PCI_PRODUCT_DAVICOM_DM9100 }, 90 { PCI_VENDOR_DAVICOM, PCI_PRODUCT_DAVICOM_DM9102 }, 91 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_AL981 }, 92 { PCI_VENDOR_ADMTEK, PCI_PRODUCT_ADMTEK_AN983 }, 93 { PCI_VENDOR_ASIX, PCI_PRODUCT_ASIX_AX88140A }, 94 { PCI_VENDOR_MACRONIX, PCI_PRODUCT_MACRONIX_MX98713 }, 95 { PCI_VENDOR_MACRONIX, PCI_PRODUCT_MACRONIX_MX98715 }, 96 { PCI_VENDOR_MACRONIX, PCI_PRODUCT_MACRONIX_MX98727 }, 97 { PCI_VENDOR_COMPEX, PCI_PRODUCT_COMPEX_98713 }, 98 { PCI_VENDOR_LITEON, PCI_PRODUCT_LITEON_PNIC }, 99 { PCI_VENDOR_LITEON, PCI_PRODUCT_LITEON_PNICII }, 100 { PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_EN1217 }, 101 { PCI_VENDOR_ACCTON, PCI_PRODUCT_ACCTON_EN2242 }, 102 { 0, 0 } 103}; 104 105int dc_pci_match(struct device *, void *, void *); 106void dc_pci_attach(struct device *, struct device *, void *); 107void dc_pci_acpi(struct device *, void *); 108 109extern void dc_eeprom_width(struct dc_softc *); 110extern void dc_read_srom(struct dc_softc *, int); 111extern void dc_parse_21143_srom(struct dc_softc *); 112 113/* 114 * Probe for a 21143 or clone chip. Check the PCI vendor and device 115 * IDs against our list and return a device name if we find a match. 116 */ 117int 118dc_pci_match(parent, match, aux) 119 struct device *parent; 120 void *match, *aux; 121{ 122 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 123 struct dc_type *t; 124 125 /* 126 * Support for the 21140 chip is experimental. If it works for you, 127 * that's great. By default, this chip will use de. 128 */ 129 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DEC && 130 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DEC_21140) 131 return (1); 132 133 /* 134 * The following chip revision doesn't seem to work so well with dc, 135 * so let's have de handle it. (de will return a match of 2) 136 */ 137 if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_DEC && 138 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DEC_21142 && 139 PCI_REVISION(pa->pa_class) == 0x21) 140 return (1); 141 142 /* 143 * Since dc doesn't fit on the alpha floppy, we want de to win by 144 * default on alpha so that RAMDISK* and GENERIC will use the same 145 * driver. 146 */ 147 for (t = dc_devs; t->dc_vid != 0; t++) { 148 if ((PCI_VENDOR(pa->pa_id) == t->dc_vid) && 149 (PCI_PRODUCT(pa->pa_id) == t->dc_did)) { 150#ifdef __alpha__ 151 return (1); 152#else 153 return (3); 154#endif 155 } 156 } 157 158 return (0); 159} 160 161void dc_pci_acpi(self, aux) 162 struct device *self; 163 void *aux; 164{ 165 struct dc_softc *sc = (struct dc_softc *)self; 166 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 167 pci_chipset_tag_t pc = pa->pa_pc; 168 u_int32_t r, cptr; 169 int unit; 170 171 unit = sc->dc_unit; 172 173 /* Find the location of the capabilities block */ 174 cptr = pci_conf_read(pc, pa->pa_tag, DC_PCI_CCAP) & 0xFF; 175 176 r = pci_conf_read(pc, pa->pa_tag, cptr) & 0xFF; 177 if (r == 0x01) { 178 179 r = pci_conf_read(pc, pa->pa_tag, cptr + 4); 180 if (r & DC_PSTATE_D3) { 181 u_int32_t iobase, membase, irq; 182 183 /* Save important PCI config data. */ 184 iobase = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFBIO); 185 membase = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFBMA); 186 irq = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFIT); 187 188 /* Reset the power state. */ 189 printf("dc%d: chip is in D%d power mode " 190 "-- setting to D0\n", unit, r & DC_PSTATE_D3); 191 r &= 0xFFFFFFFC; 192 pci_conf_write(pc, pa->pa_tag, cptr + 4, r); 193 194 /* Restore PCI config data. */ 195 pci_conf_write(pc, pa->pa_tag, DC_PCI_CFBIO, iobase); 196 pci_conf_write(pc, pa->pa_tag, DC_PCI_CFBMA, membase); 197 pci_conf_write(pc, pa->pa_tag, DC_PCI_CFIT, irq); 198 } 199 } 200 return; 201} 202 203/* 204 * Attach the interface. Allocate softc structures, do ifmedia 205 * setup and ethernet/BPF attach. 206 */ 207void dc_pci_attach(parent, self, aux) 208 struct device *parent, *self; 209 void *aux; 210{ 211 int s; 212 const char *intrstr = NULL; 213 u_int32_t command; 214 struct dc_softc *sc = (struct dc_softc *)self; 215 struct pci_attach_args *pa = aux; 216 pci_chipset_tag_t pc = pa->pa_pc; 217 pci_intr_handle_t ih; 218 bus_addr_t iobase; 219 bus_size_t iosize; 220 u_int32_t revision; 221 int found = 0; 222 223 s = splimp(); 224 sc->sc_dmat = pa->pa_dmat; 225 sc->dc_unit = sc->sc_dev.dv_unit; 226 227 /* 228 * Handle power management nonsense. 229 */ 230 dc_pci_acpi(self, aux); 231 232 /* 233 * Map control/status registers. 234 */ 235 command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 236 command |= PCI_COMMAND_IO_ENABLE | PCI_COMMAND_MEM_ENABLE | 237 PCI_COMMAND_MASTER_ENABLE; 238 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, command); 239 command = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 240 241 sc->dc_csid = pci_conf_read(pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 242 243#ifdef DC_USEIOSPACE 244 if (!(command & PCI_COMMAND_IO_ENABLE)) { 245 printf(": failed to enable I/O ports\n"); 246 goto fail; 247 } 248 if (pci_io_find(pc, pa->pa_tag, DC_PCI_CFBIO, &iobase, &iosize)) { 249 printf(": can't find I/O space\n"); 250 goto fail; 251 } 252 if (bus_space_map(pa->pa_iot, iobase, iosize, 0, &sc->dc_bhandle)) { 253 printf(": can't map I/O space\n"); 254 goto fail; 255 } 256 sc->dc_btag = pa->pa_iot; 257#else 258 if (!(command & PCI_COMMAND_MEM_ENABLE)) { 259 printf(": failed to enable memory mapping\n"); 260 goto fail; 261 } 262 if (pci_mem_find(pc, pa->pa_tag, DC_PCI_CFBMA, &iobase, &iosize, NULL)){ 263 printf(": can't find mem space\n"); 264 goto fail; 265 } 266 if (bus_space_map(pa->pa_memt, iobase, iosize, 0, &sc->dc_bhandle)) { 267 printf(": can't map mem space\n"); 268 goto fail; 269 } 270 sc->dc_btag = pa->pa_memt; 271#endif 272 273 /* Allocate interrupt */ 274 if (pci_intr_map(pa, &ih)) { 275 printf(": couldn't map interrupt\n"); 276 goto fail; 277 } 278 intrstr = pci_intr_string(pc, ih); 279 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, dc_intr, sc, 280 self->dv_xname); 281 if (sc->sc_ih == NULL) { 282 printf(": couldn't establish interrupt"); 283 if (intrstr != NULL) 284 printf(" at %s", intrstr); 285 printf("\n"); 286 goto fail; 287 } 288 printf(": %s", intrstr); 289 290 /* Need this info to decide on a chip type. */ 291 sc->dc_revision = revision = PCI_REVISION(pa->pa_class); 292 293 switch (PCI_VENDOR(pa->pa_id)) { 294 case PCI_VENDOR_DEC: 295 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DEC_21140 || 296 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DEC_21142) { 297 found = 1; 298 sc->dc_type = DC_TYPE_21143; 299 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 300 sc->dc_flags |= DC_REDUCED_MII_POLL; 301 dc_eeprom_width(sc); 302 dc_read_srom(sc, sc->dc_romwidth); 303 } 304 break; 305 case PCI_VENDOR_DAVICOM: 306 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DAVICOM_DM9100 || 307 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_DAVICOM_DM9102) { 308 found = 1; 309 sc->dc_type = DC_TYPE_DM9102; 310 sc->dc_flags |= DC_TX_COALESCE|DC_TX_INTR_ALWAYS; 311 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_TX_STORENFWD; 312 sc->dc_pmode = DC_PMODE_MII; 313 314 /* Increase the latency timer value. */ 315 command = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFLT); 316 command &= 0xFFFF00FF; 317 command |= 0x00008000; 318 pci_conf_write(pc, pa->pa_tag, DC_PCI_CFLT, command); 319 } 320 break; 321 case PCI_VENDOR_ADMTEK: 322 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADMTEK_AL981) { 323 found = 1; 324 sc->dc_type = DC_TYPE_AL981; 325 sc->dc_flags |= DC_TX_USE_TX_INTR; 326 sc->dc_flags |= DC_TX_ADMTEK_WAR; 327 sc->dc_pmode = DC_PMODE_MII; 328 } 329 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ADMTEK_AN983) { 330 found = 1; 331 sc->dc_type = DC_TYPE_AN983; 332 sc->dc_flags |= DC_TX_USE_TX_INTR; 333 sc->dc_flags |= DC_TX_ADMTEK_WAR; 334 sc->dc_pmode = DC_PMODE_MII; 335 } 336 dc_eeprom_width(sc); 337 dc_read_srom(sc, sc->dc_romwidth); 338 break; 339 case PCI_VENDOR_MACRONIX: 340 case PCI_VENDOR_ACCTON: 341 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ACCTON_EN2242) { 342 found = 1; 343 sc->dc_type = DC_TYPE_AN983; 344 sc->dc_flags |= DC_TX_USE_TX_INTR; 345 sc->dc_flags |= DC_TX_ADMTEK_WAR; 346 sc->dc_pmode = DC_PMODE_MII; 347 348 dc_eeprom_width(sc); 349 dc_read_srom(sc, sc->dc_romwidth); 350 } 351 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MACRONIX_MX98713) { 352 found = 1; 353 if (revision < DC_REVISION_98713A) { 354 sc->dc_type = DC_TYPE_98713; 355 } 356 if (revision >= DC_REVISION_98713A) { 357 sc->dc_type = DC_TYPE_98713A; 358 sc->dc_flags |= DC_21143_NWAY; 359 } 360 sc->dc_flags |= DC_REDUCED_MII_POLL; 361 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 362 } 363 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MACRONIX_MX98715 || 364 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ACCTON_EN1217) { 365 found = 1; 366 if (revision >= DC_REVISION_98715AEC_C && 367 revision < DC_REVISION_98725) 368 sc->dc_flags |= DC_128BIT_HASH; 369 sc->dc_type = DC_TYPE_987x5; 370 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 371 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; 372 } 373 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_MACRONIX_MX98727) { 374 found = 1; 375 sc->dc_type = DC_TYPE_987x5; 376 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 377 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; 378 } 379 break; 380 case PCI_VENDOR_COMPEX: 381 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_COMPEX_98713) { 382 found = 1; 383 if (revision < DC_REVISION_98713A) { 384 sc->dc_type = DC_TYPE_98713; 385 sc->dc_flags |= DC_REDUCED_MII_POLL; 386 } 387 if (revision >= DC_REVISION_98713A) 388 sc->dc_type = DC_TYPE_98713A; 389 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 390 } 391 break; 392 case PCI_VENDOR_LITEON: 393 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_LITEON_PNICII) { 394 found = 1; 395 sc->dc_type = DC_TYPE_PNICII; 396 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 397 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; 398 sc->dc_flags |= DC_128BIT_HASH; 399 } 400 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_LITEON_PNIC) { 401 found = 1; 402 sc->dc_type = DC_TYPE_PNIC; 403 sc->dc_flags |= DC_TX_STORENFWD|DC_TX_INTR_ALWAYS; 404 sc->dc_flags |= DC_PNIC_RX_BUG_WAR; 405 sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, 406 M_NOWAIT); 407 if (sc->dc_pnic_rx_buf == NULL) 408 panic("dc_pci_attach"); 409 if (revision < DC_REVISION_82C169) 410 sc->dc_pmode = DC_PMODE_SYM; 411 } 412 break; 413 case PCI_VENDOR_ASIX: 414 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_ASIX_AX88140A) { 415 found = 1; 416 sc->dc_type = DC_TYPE_ASIX; 417 sc->dc_flags |= DC_TX_USE_TX_INTR|DC_TX_INTR_FIRSTFRAG; 418 sc->dc_flags |= DC_REDUCED_MII_POLL; 419 sc->dc_pmode = DC_PMODE_MII; 420 } 421 break; 422 } 423 if (found == 0) { 424 /* This shouldn't happen if probe has done it's job... */ 425 printf(": unknown device: %x:%x\n", 426 PCI_VENDOR(pa->pa_id), PCI_PRODUCT(pa->pa_id)); 427 goto fail; 428 } 429 430 /* Save the cache line size. */ 431 if (DC_IS_DAVICOM(sc)) 432 sc->dc_cachesize = 0; 433 else 434 sc->dc_cachesize = pci_conf_read(pc, pa->pa_tag, 435 DC_PCI_CFLT) & 0xFF; 436 437 /* Reset the adapter. */ 438 dc_reset(sc); 439 440 /* Take 21143 out of snooze mode */ 441 if (DC_IS_INTEL(sc)) { 442 command = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFDD); 443 command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE); 444 pci_conf_write(pc, pa->pa_tag, DC_PCI_CFDD, command); 445 } 446 447 /* 448 * If we discover later (in dc_attach) that we have an 449 * MII with no PHY, we need to have the 21143 drive the LEDs. 450 * Except there are some systems like the NEC VersaPro NoteBook PC 451 * which have no LEDs, and twiddling these bits has adverse effects 452 * on them. (I.e. you suddenly can't get a link.) 453 * 454 * If mii_attach() returns an error, we leave the DC_TULIP_LEDS 455 * bit set, else we clear it. Since our dc(4) driver is split into 456 * bus-dependent and bus-independent parts, we must do set this bit 457 * here while we are able to do PCI configuration reads. 458 */ 459 if (DC_IS_INTEL(sc)) { 460 if (pci_conf_read(pc, pa->pa_tag, DC_PCI_CSID) != 0x80281033) 461 sc->dc_flags |= DC_TULIP_LEDS; 462 } 463 464 /* 465 * Try to learn something about the supported media. 466 * We know that ASIX and ADMtek and Davicom devices 467 * will *always* be using MII media, so that's a no-brainer. 468 * The tricky ones are the Macronix/PNIC II and the 469 * Intel 21143. 470 */ 471 if (DC_IS_INTEL(sc)) 472 dc_parse_21143_srom(sc); 473 else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 474 if (sc->dc_type == DC_TYPE_98713) 475 sc->dc_pmode = DC_PMODE_MII; 476 else 477 sc->dc_pmode = DC_PMODE_SYM; 478 } else if (!sc->dc_pmode) 479 sc->dc_pmode = DC_PMODE_MII; 480 481#ifdef __sparc64__ 482 { 483 extern void myetheraddr(u_char *); 484 485 if (OF_getprop(PCITAG_NODE(pa->pa_tag), "local-mac-address", 486 sc->arpcom.ac_enaddr, ETHER_ADDR_LEN) <= 0) 487 myetheraddr(sc->arpcom.ac_enaddr); 488 sc->sc_hasmac = 1; 489 } 490#endif 491 492#ifdef SRM_MEDIA 493 sc->dc_srm_media = 0; 494 495 /* Remember the SRM console media setting */ 496 if (DC_IS_INTEL(sc)) { 497 command = pci_conf_read(pc, pa->pa_tag, DC_PCI_CFDD); 498 command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE); 499 switch ((command >> 8) & 0xff) { 500 case 3: 501 sc->dc_srm_media = IFM_10_T; 502 break; 503 case 4: 504 sc->dc_srm_media = IFM_10_T | IFM_FDX; 505 break; 506 case 5: 507 sc->dc_srm_media = IFM_100_TX; 508 break; 509 case 6: 510 sc->dc_srm_media = IFM_100_TX | IFM_FDX; 511 break; 512 } 513 if (sc->dc_srm_media) 514 sc->dc_srm_media |= IFM_ACTIVE | IFM_ETHER; 515 } 516#endif 517 dc_eeprom_width(sc); 518 dc_attach(sc); 519 520fail: 521 splx(s); 522} 523 524struct cfattach dc_pci_ca = { 525 sizeof(struct dc_softc), dc_pci_match, dc_pci_attach 526}; 527