1 /* 2 * Copyright (c) 1997, 1998, 1999 3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 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 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 * 32 * $FreeBSD$ 33 */ 34 35 /* 36 * DEC "tulip" clone ethernet driver. Supports the DEC/Intel 21143 37 * series chips and several workalikes including the following: 38 * 39 * Macronix 98713/98715/98725/98727/98732 PMAC (www.macronix.com) 40 * Macronix/Lite-On 82c115 PNIC II (www.macronix.com) 41 * Lite-On 82c168/82c169 PNIC (www.litecom.com) 42 * ASIX Electronics AX88140A (www.asix.com.tw) 43 * ASIX Electronics AX88141 (www.asix.com.tw) 44 * ADMtek AL981 (www.admtek.com.tw) 45 * ADMtek AN985 (www.admtek.com.tw) 46 * Davicom DM9100, DM9102, DM9102A (www.davicom8.com) 47 * Accton EN1217 (www.accton.com) 48 * Xircom X3201 (www.xircom.com) 49 * Abocom FE2500 50 * 51 * Datasheets for the 21143 are available at developer.intel.com. 52 * Datasheets for the clone parts can be found at their respective sites. 53 * (Except for the PNIC; see www.freebsd.org/~wpaul/PNIC/pnic.ps.gz.) 54 * The PNIC II is essentially a Macronix 98715A chip; the only difference 55 * worth noting is that its multicast hash table is only 128 bits wide 56 * instead of 512. 57 * 58 * Written by Bill Paul <wpaul@ee.columbia.edu> 59 * Electrical Engineering Department 60 * Columbia University, New York City 61 */ 62 63 /* 64 * The Intel 21143 is the successor to the DEC 21140. It is basically 65 * the same as the 21140 but with a few new features. The 21143 supports 66 * three kinds of media attachments: 67 * 68 * o MII port, for 10Mbps and 100Mbps support and NWAY 69 * autonegotiation provided by an external PHY. 70 * o SYM port, for symbol mode 100Mbps support. 71 * o 10baseT port. 72 * o AUI/BNC port. 73 * 74 * The 100Mbps SYM port and 10baseT port can be used together in 75 * combination with the internal NWAY support to create a 10/100 76 * autosensing configuration. 77 * 78 * Note that not all tulip workalikes are handled in this driver: we only 79 * deal with those which are relatively well behaved. The Winbond is 80 * handled separately due to its different register offsets and the 81 * special handling needed for its various bugs. The PNIC is handled 82 * here, but I'm not thrilled about it. 83 * 84 * All of the workalike chips use some form of MII transceiver support 85 * with the exception of the Macronix chips, which also have a SYM port. 86 * The ASIX AX88140A is also documented to have a SYM port, but all 87 * the cards I've seen use an MII transceiver, probably because the 88 * AX88140A doesn't support internal NWAY. 89 */ 90 91 #include <sys/param.h> 92 #include <sys/systm.h> 93 #include <sys/sockio.h> 94 #include <sys/mbuf.h> 95 #include <sys/malloc.h> 96 #include <sys/kernel.h> 97 #include <sys/socket.h> 98 99 #include <net/if.h> 100 #include <net/if_arp.h> 101 #include <net/ethernet.h> 102 #include <net/if_dl.h> 103 #include <net/if_media.h> 104 105 #include <net/bpf.h> 106 107 #include <vm/vm.h> /* for vtophys */ 108 #include <vm/pmap.h> /* for vtophys */ 109 #include <machine/bus_pio.h> 110 #include <machine/bus_memio.h> 111 #include <machine/bus.h> 112 #include <machine/resource.h> 113 #include <sys/bus.h> 114 #include <sys/rman.h> 115 116 #include <dev/mii/mii.h> 117 #include <dev/mii/miivar.h> 118 119 #include <pci/pcireg.h> 120 #include <pci/pcivar.h> 121 122 #define DC_USEIOSPACE 123 #ifdef __alpha__ 124 #define SRM_MEDIA 125 #endif 126 127 #include <pci/if_dcreg.h> 128 129 MODULE_DEPEND(dc, miibus, 1, 1, 1); 130 131 /* "controller miibus0" required. See GENERIC if you get errors here. */ 132 #include "miibus_if.h" 133 134 #ifndef lint 135 static const char rcsid[] = 136 "$FreeBSD$"; 137 #endif 138 139 /* 140 * Various supported device vendors/types and their names. 141 */ 142 static struct dc_type dc_devs[] = { 143 { DC_VENDORID_DEC, DC_DEVICEID_21143, 144 "Intel 21143 10/100BaseTX" }, 145 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100, 146 "Davicom DM9100 10/100BaseTX" }, 147 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102, 148 "Davicom DM9102 10/100BaseTX" }, 149 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102, 150 "Davicom DM9102A 10/100BaseTX" }, 151 { DC_VENDORID_ADMTEK, DC_DEVICEID_AL981, 152 "ADMtek AL981 10/100BaseTX" }, 153 { DC_VENDORID_ADMTEK, DC_DEVICEID_AN985, 154 "ADMtek AN985 10/100BaseTX" }, 155 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A, 156 "ASIX AX88140A 10/100BaseTX" }, 157 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A, 158 "ASIX AX88141 10/100BaseTX" }, 159 { DC_VENDORID_MX, DC_DEVICEID_98713, 160 "Macronix 98713 10/100BaseTX" }, 161 { DC_VENDORID_MX, DC_DEVICEID_98713, 162 "Macronix 98713A 10/100BaseTX" }, 163 { DC_VENDORID_CP, DC_DEVICEID_98713_CP, 164 "Compex RL100-TX 10/100BaseTX" }, 165 { DC_VENDORID_CP, DC_DEVICEID_98713_CP, 166 "Compex RL100-TX 10/100BaseTX" }, 167 { DC_VENDORID_MX, DC_DEVICEID_987x5, 168 "Macronix 98715/98715A 10/100BaseTX" }, 169 { DC_VENDORID_MX, DC_DEVICEID_987x5, 170 "Macronix 98715AEC-C 10/100BaseTX" }, 171 { DC_VENDORID_MX, DC_DEVICEID_987x5, 172 "Macronix 98725 10/100BaseTX" }, 173 { DC_VENDORID_MX, DC_DEVICEID_98727, 174 "Macronix 98727/98732 10/100BaseTX" }, 175 { DC_VENDORID_LO, DC_DEVICEID_82C115, 176 "LC82C115 PNIC II 10/100BaseTX" }, 177 { DC_VENDORID_LO, DC_DEVICEID_82C168, 178 "82c168 PNIC 10/100BaseTX" }, 179 { DC_VENDORID_LO, DC_DEVICEID_82C168, 180 "82c169 PNIC 10/100BaseTX" }, 181 { DC_VENDORID_ACCTON, DC_DEVICEID_EN1217, 182 "Accton EN1217 10/100BaseTX" }, 183 { DC_VENDORID_ACCTON, DC_DEVICEID_EN2242, 184 "Accton EN2242 MiniPCI 10/100BaseTX" }, 185 { DC_VENDORID_XIRCOM, DC_DEVICEID_X3201, 186 "Xircom X3201 10/100BaseTX" }, 187 { DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500, 188 "Abocom FE2500 10/100BaseTX" }, 189 { 0, 0, NULL } 190 }; 191 192 static int dc_probe __P((device_t)); 193 static int dc_attach __P((device_t)); 194 static int dc_detach __P((device_t)); 195 static void dc_acpi __P((device_t)); 196 static struct dc_type *dc_devtype __P((device_t)); 197 static int dc_newbuf __P((struct dc_softc *, int, struct mbuf *)); 198 static int dc_encap __P((struct dc_softc *, struct mbuf *, 199 u_int32_t *)); 200 static int dc_coal __P((struct dc_softc *, struct mbuf **)); 201 static void dc_pnic_rx_bug_war __P((struct dc_softc *, int)); 202 static int dc_rx_resync __P((struct dc_softc *)); 203 static void dc_rxeof __P((struct dc_softc *)); 204 static void dc_txeof __P((struct dc_softc *)); 205 static void dc_tick __P((void *)); 206 static void dc_tx_underrun __P((struct dc_softc *)); 207 static void dc_intr __P((void *)); 208 static void dc_start __P((struct ifnet *)); 209 static int dc_ioctl __P((struct ifnet *, u_long, caddr_t)); 210 static void dc_init __P((void *)); 211 static void dc_stop __P((struct dc_softc *)); 212 static void dc_watchdog __P((struct ifnet *)); 213 static void dc_shutdown __P((device_t)); 214 static int dc_ifmedia_upd __P((struct ifnet *)); 215 static void dc_ifmedia_sts __P((struct ifnet *, struct ifmediareq *)); 216 217 static void dc_delay __P((struct dc_softc *)); 218 static void dc_eeprom_idle __P((struct dc_softc *)); 219 static void dc_eeprom_putbyte __P((struct dc_softc *, int)); 220 static void dc_eeprom_getword __P((struct dc_softc *, int, u_int16_t *)); 221 static void dc_eeprom_getword_pnic 222 __P((struct dc_softc *, int, u_int16_t *)); 223 static void dc_eeprom_getword_xircom 224 __P((struct dc_softc *, int, u_int16_t *)); 225 static void dc_read_eeprom __P((struct dc_softc *, caddr_t, int, 226 int, int)); 227 228 static void dc_mii_writebit __P((struct dc_softc *, int)); 229 static int dc_mii_readbit __P((struct dc_softc *)); 230 static void dc_mii_sync __P((struct dc_softc *)); 231 static void dc_mii_send __P((struct dc_softc *, u_int32_t, int)); 232 static int dc_mii_readreg __P((struct dc_softc *, struct dc_mii_frame *)); 233 static int dc_mii_writereg __P((struct dc_softc *, struct dc_mii_frame *)); 234 static int dc_miibus_readreg __P((device_t, int, int)); 235 static int dc_miibus_writereg __P((device_t, int, int, int)); 236 static void dc_miibus_statchg __P((device_t)); 237 static void dc_miibus_mediainit __P((device_t)); 238 239 static void dc_setcfg __P((struct dc_softc *, int)); 240 static u_int32_t dc_crc_le __P((struct dc_softc *, caddr_t)); 241 static u_int32_t dc_crc_be __P((caddr_t)); 242 static void dc_setfilt_21143 __P((struct dc_softc *)); 243 static void dc_setfilt_asix __P((struct dc_softc *)); 244 static void dc_setfilt_admtek __P((struct dc_softc *)); 245 static void dc_setfilt_xircom __P((struct dc_softc *)); 246 247 static void dc_setfilt __P((struct dc_softc *)); 248 249 static void dc_reset __P((struct dc_softc *)); 250 static int dc_list_rx_init __P((struct dc_softc *)); 251 static int dc_list_tx_init __P((struct dc_softc *)); 252 253 static void dc_parse_21143_srom __P((struct dc_softc *)); 254 static void dc_decode_leaf_sia __P((struct dc_softc *, 255 struct dc_eblock_sia *)); 256 static void dc_decode_leaf_mii __P((struct dc_softc *, 257 struct dc_eblock_mii *)); 258 static void dc_decode_leaf_sym __P((struct dc_softc *, 259 struct dc_eblock_sym *)); 260 static void dc_apply_fixup __P((struct dc_softc *, int)); 261 262 #ifdef DC_USEIOSPACE 263 #define DC_RES SYS_RES_IOPORT 264 #define DC_RID DC_PCI_CFBIO 265 #else 266 #define DC_RES SYS_RES_MEMORY 267 #define DC_RID DC_PCI_CFBMA 268 #endif 269 270 static device_method_t dc_methods[] = { 271 /* Device interface */ 272 DEVMETHOD(device_probe, dc_probe), 273 DEVMETHOD(device_attach, dc_attach), 274 DEVMETHOD(device_detach, dc_detach), 275 DEVMETHOD(device_shutdown, dc_shutdown), 276 277 /* bus interface */ 278 DEVMETHOD(bus_print_child, bus_generic_print_child), 279 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 280 281 /* MII interface */ 282 DEVMETHOD(miibus_readreg, dc_miibus_readreg), 283 DEVMETHOD(miibus_writereg, dc_miibus_writereg), 284 DEVMETHOD(miibus_statchg, dc_miibus_statchg), 285 DEVMETHOD(miibus_mediainit, dc_miibus_mediainit), 286 287 { 0, 0 } 288 }; 289 290 static driver_t dc_driver = { 291 "dc", 292 dc_methods, 293 sizeof(struct dc_softc) 294 }; 295 296 static devclass_t dc_devclass; 297 298 DRIVER_MODULE(if_dc, cardbus, dc_driver, dc_devclass, 0, 0); 299 DRIVER_MODULE(if_dc, pci, dc_driver, dc_devclass, 0, 0); 300 DRIVER_MODULE(miibus, dc, miibus_driver, miibus_devclass, 0, 0); 301 302 #define DC_SETBIT(sc, reg, x) \ 303 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x)) 304 305 #define DC_CLRBIT(sc, reg, x) \ 306 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x)) 307 308 #define SIO_SET(x) DC_SETBIT(sc, DC_SIO, (x)) 309 #define SIO_CLR(x) DC_CLRBIT(sc, DC_SIO, (x)) 310 311 #define IS_MPSAFE 0 312 313 static void dc_delay(sc) 314 struct dc_softc *sc; 315 { 316 int idx; 317 318 for (idx = (300 / 33) + 1; idx > 0; idx--) 319 CSR_READ_4(sc, DC_BUSCTL); 320 } 321 322 static void dc_eeprom_idle(sc) 323 struct dc_softc *sc; 324 { 325 register int i; 326 327 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 328 dc_delay(sc); 329 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 330 dc_delay(sc); 331 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 332 dc_delay(sc); 333 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 334 dc_delay(sc); 335 336 for (i = 0; i < 25; i++) { 337 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 338 dc_delay(sc); 339 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 340 dc_delay(sc); 341 } 342 343 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 344 dc_delay(sc); 345 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CS); 346 dc_delay(sc); 347 CSR_WRITE_4(sc, DC_SIO, 0x00000000); 348 349 return; 350 } 351 352 /* 353 * Send a read command and address to the EEPROM, check for ACK. 354 */ 355 static void dc_eeprom_putbyte(sc, addr) 356 struct dc_softc *sc; 357 int addr; 358 { 359 register int d, i; 360 361 /* 362 * The AN985 has a 93C66 EEPROM on it instead of 363 * a 93C46. It uses a different bit sequence for 364 * specifying the "read" opcode. 365 */ 366 if (DC_IS_CENTAUR(sc)) 367 d = addr | (DC_EECMD_READ << 2); 368 else 369 d = addr | DC_EECMD_READ; 370 371 /* 372 * Feed in each bit and strobe the clock. 373 */ 374 for (i = 0x400; i; i >>= 1) { 375 if (d & i) { 376 SIO_SET(DC_SIO_EE_DATAIN); 377 } else { 378 SIO_CLR(DC_SIO_EE_DATAIN); 379 } 380 dc_delay(sc); 381 SIO_SET(DC_SIO_EE_CLK); 382 dc_delay(sc); 383 SIO_CLR(DC_SIO_EE_CLK); 384 dc_delay(sc); 385 } 386 387 return; 388 } 389 390 /* 391 * Read a word of data stored in the EEPROM at address 'addr.' 392 * The PNIC 82c168/82c169 has its own non-standard way to read 393 * the EEPROM. 394 */ 395 static void dc_eeprom_getword_pnic(sc, addr, dest) 396 struct dc_softc *sc; 397 int addr; 398 u_int16_t *dest; 399 { 400 register int i; 401 u_int32_t r; 402 403 CSR_WRITE_4(sc, DC_PN_SIOCTL, DC_PN_EEOPCODE_READ|addr); 404 405 for (i = 0; i < DC_TIMEOUT; i++) { 406 DELAY(1); 407 r = CSR_READ_4(sc, DC_SIO); 408 if (!(r & DC_PN_SIOCTL_BUSY)) { 409 *dest = (u_int16_t)(r & 0xFFFF); 410 return; 411 } 412 } 413 414 return; 415 } 416 417 /* 418 * Read a word of data stored in the EEPROM at address 'addr.' 419 * The Xircom X3201 has its own non-standard way to read 420 * the EEPROM, too. 421 */ 422 static void dc_eeprom_getword_xircom(sc, addr, dest) 423 struct dc_softc *sc; 424 int addr; 425 u_int16_t *dest; 426 { 427 SIO_SET(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ); 428 429 addr *= 2; 430 CSR_WRITE_4(sc, DC_ROM, addr | 0x160); 431 *dest = (u_int16_t)CSR_READ_4(sc, DC_SIO)&0xff; 432 addr += 1; 433 CSR_WRITE_4(sc, DC_ROM, addr | 0x160); 434 *dest |= ((u_int16_t)CSR_READ_4(sc, DC_SIO)&0xff) << 8; 435 436 SIO_CLR(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ); 437 return; 438 } 439 440 /* 441 * Read a word of data stored in the EEPROM at address 'addr.' 442 */ 443 static void dc_eeprom_getword(sc, addr, dest) 444 struct dc_softc *sc; 445 int addr; 446 u_int16_t *dest; 447 { 448 register int i; 449 u_int16_t word = 0; 450 451 /* Force EEPROM to idle state. */ 452 dc_eeprom_idle(sc); 453 454 /* Enter EEPROM access mode. */ 455 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 456 dc_delay(sc); 457 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 458 dc_delay(sc); 459 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 460 dc_delay(sc); 461 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 462 dc_delay(sc); 463 464 /* 465 * Send address of word we want to read. 466 */ 467 dc_eeprom_putbyte(sc, addr); 468 469 /* 470 * Start reading bits from EEPROM. 471 */ 472 for (i = 0x8000; i; i >>= 1) { 473 SIO_SET(DC_SIO_EE_CLK); 474 dc_delay(sc); 475 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT) 476 word |= i; 477 dc_delay(sc); 478 SIO_CLR(DC_SIO_EE_CLK); 479 dc_delay(sc); 480 } 481 482 /* Turn off EEPROM access mode. */ 483 dc_eeprom_idle(sc); 484 485 *dest = word; 486 487 return; 488 } 489 490 /* 491 * Read a sequence of words from the EEPROM. 492 */ 493 static void dc_read_eeprom(sc, dest, off, cnt, swap) 494 struct dc_softc *sc; 495 caddr_t dest; 496 int off; 497 int cnt; 498 int swap; 499 { 500 int i; 501 u_int16_t word = 0, *ptr; 502 503 for (i = 0; i < cnt; i++) { 504 if (DC_IS_PNIC(sc)) 505 dc_eeprom_getword_pnic(sc, off + i, &word); 506 else if (DC_IS_XIRCOM(sc)) 507 dc_eeprom_getword_xircom(sc, off + i, &word); 508 else 509 dc_eeprom_getword(sc, off + i, &word); 510 ptr = (u_int16_t *)(dest + (i * 2)); 511 if (swap) 512 *ptr = ntohs(word); 513 else 514 *ptr = word; 515 } 516 517 return; 518 } 519 520 /* 521 * The following two routines are taken from the Macronix 98713 522 * Application Notes pp.19-21. 523 */ 524 /* 525 * Write a bit to the MII bus. 526 */ 527 static void dc_mii_writebit(sc, bit) 528 struct dc_softc *sc; 529 int bit; 530 { 531 if (bit) 532 CSR_WRITE_4(sc, DC_SIO, 533 DC_SIO_ROMCTL_WRITE|DC_SIO_MII_DATAOUT); 534 else 535 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); 536 537 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); 538 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); 539 540 return; 541 } 542 543 /* 544 * Read a bit from the MII bus. 545 */ 546 static int dc_mii_readbit(sc) 547 struct dc_softc *sc; 548 { 549 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_READ|DC_SIO_MII_DIR); 550 CSR_READ_4(sc, DC_SIO); 551 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); 552 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); 553 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_MII_DATAIN) 554 return(1); 555 556 return(0); 557 } 558 559 /* 560 * Sync the PHYs by setting data bit and strobing the clock 32 times. 561 */ 562 static void dc_mii_sync(sc) 563 struct dc_softc *sc; 564 { 565 register int i; 566 567 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); 568 569 for (i = 0; i < 32; i++) 570 dc_mii_writebit(sc, 1); 571 572 return; 573 } 574 575 /* 576 * Clock a series of bits through the MII. 577 */ 578 static void dc_mii_send(sc, bits, cnt) 579 struct dc_softc *sc; 580 u_int32_t bits; 581 int cnt; 582 { 583 int i; 584 585 for (i = (0x1 << (cnt - 1)); i; i >>= 1) 586 dc_mii_writebit(sc, bits & i); 587 } 588 589 /* 590 * Read an PHY register through the MII. 591 */ 592 static int dc_mii_readreg(sc, frame) 593 struct dc_softc *sc; 594 struct dc_mii_frame *frame; 595 596 { 597 int i, ack; 598 599 DC_LOCK(sc); 600 601 /* 602 * Set up frame for RX. 603 */ 604 frame->mii_stdelim = DC_MII_STARTDELIM; 605 frame->mii_opcode = DC_MII_READOP; 606 frame->mii_turnaround = 0; 607 frame->mii_data = 0; 608 609 /* 610 * Sync the PHYs. 611 */ 612 dc_mii_sync(sc); 613 614 /* 615 * Send command/address info. 616 */ 617 dc_mii_send(sc, frame->mii_stdelim, 2); 618 dc_mii_send(sc, frame->mii_opcode, 2); 619 dc_mii_send(sc, frame->mii_phyaddr, 5); 620 dc_mii_send(sc, frame->mii_regaddr, 5); 621 622 #ifdef notdef 623 /* Idle bit */ 624 dc_mii_writebit(sc, 1); 625 dc_mii_writebit(sc, 0); 626 #endif 627 628 /* Check for ack */ 629 ack = dc_mii_readbit(sc); 630 631 /* 632 * Now try reading data bits. If the ack failed, we still 633 * need to clock through 16 cycles to keep the PHY(s) in sync. 634 */ 635 if (ack) { 636 for(i = 0; i < 16; i++) { 637 dc_mii_readbit(sc); 638 } 639 goto fail; 640 } 641 642 for (i = 0x8000; i; i >>= 1) { 643 if (!ack) { 644 if (dc_mii_readbit(sc)) 645 frame->mii_data |= i; 646 } 647 } 648 649 fail: 650 651 dc_mii_writebit(sc, 0); 652 dc_mii_writebit(sc, 0); 653 654 DC_UNLOCK(sc); 655 656 if (ack) 657 return(1); 658 return(0); 659 } 660 661 /* 662 * Write to a PHY register through the MII. 663 */ 664 static int dc_mii_writereg(sc, frame) 665 struct dc_softc *sc; 666 struct dc_mii_frame *frame; 667 668 { 669 DC_LOCK(sc); 670 /* 671 * Set up frame for TX. 672 */ 673 674 frame->mii_stdelim = DC_MII_STARTDELIM; 675 frame->mii_opcode = DC_MII_WRITEOP; 676 frame->mii_turnaround = DC_MII_TURNAROUND; 677 678 /* 679 * Sync the PHYs. 680 */ 681 dc_mii_sync(sc); 682 683 dc_mii_send(sc, frame->mii_stdelim, 2); 684 dc_mii_send(sc, frame->mii_opcode, 2); 685 dc_mii_send(sc, frame->mii_phyaddr, 5); 686 dc_mii_send(sc, frame->mii_regaddr, 5); 687 dc_mii_send(sc, frame->mii_turnaround, 2); 688 dc_mii_send(sc, frame->mii_data, 16); 689 690 /* Idle bit. */ 691 dc_mii_writebit(sc, 0); 692 dc_mii_writebit(sc, 0); 693 694 DC_UNLOCK(sc); 695 696 return(0); 697 } 698 699 static int dc_miibus_readreg(dev, phy, reg) 700 device_t dev; 701 int phy, reg; 702 { 703 struct dc_mii_frame frame; 704 struct dc_softc *sc; 705 int i, rval, phy_reg = 0; 706 707 sc = device_get_softc(dev); 708 bzero((char *)&frame, sizeof(frame)); 709 710 /* 711 * Note: both the AL981 and AN985 have internal PHYs, 712 * however the AL981 provides direct access to the PHY 713 * registers while the AN985 uses a serial MII interface. 714 * The AN985's MII interface is also buggy in that you 715 * can read from any MII address (0 to 31), but only address 1 716 * behaves normally. To deal with both cases, we pretend 717 * that the PHY is at MII address 1. 718 */ 719 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) 720 return(0); 721 722 if (sc->dc_pmode != DC_PMODE_MII) { 723 if (phy == (MII_NPHY - 1)) { 724 switch(reg) { 725 case MII_BMSR: 726 /* 727 * Fake something to make the probe 728 * code think there's a PHY here. 729 */ 730 return(BMSR_MEDIAMASK); 731 break; 732 case MII_PHYIDR1: 733 if (DC_IS_PNIC(sc)) 734 return(DC_VENDORID_LO); 735 return(DC_VENDORID_DEC); 736 break; 737 case MII_PHYIDR2: 738 if (DC_IS_PNIC(sc)) 739 return(DC_DEVICEID_82C168); 740 return(DC_DEVICEID_21143); 741 break; 742 default: 743 return(0); 744 break; 745 } 746 } else 747 return(0); 748 } 749 750 if (DC_IS_PNIC(sc)) { 751 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ | 752 (phy << 23) | (reg << 18)); 753 for (i = 0; i < DC_TIMEOUT; i++) { 754 DELAY(1); 755 rval = CSR_READ_4(sc, DC_PN_MII); 756 if (!(rval & DC_PN_MII_BUSY)) { 757 rval &= 0xFFFF; 758 return(rval == 0xFFFF ? 0 : rval); 759 } 760 } 761 return(0); 762 } 763 764 if (DC_IS_COMET(sc)) { 765 switch(reg) { 766 case MII_BMCR: 767 phy_reg = DC_AL_BMCR; 768 break; 769 case MII_BMSR: 770 phy_reg = DC_AL_BMSR; 771 break; 772 case MII_PHYIDR1: 773 phy_reg = DC_AL_VENID; 774 break; 775 case MII_PHYIDR2: 776 phy_reg = DC_AL_DEVID; 777 break; 778 case MII_ANAR: 779 phy_reg = DC_AL_ANAR; 780 break; 781 case MII_ANLPAR: 782 phy_reg = DC_AL_LPAR; 783 break; 784 case MII_ANER: 785 phy_reg = DC_AL_ANER; 786 break; 787 default: 788 printf("dc%d: phy_read: bad phy register %x\n", 789 sc->dc_unit, reg); 790 return(0); 791 break; 792 } 793 794 rval = CSR_READ_4(sc, phy_reg) & 0x0000FFFF; 795 796 if (rval == 0xFFFF) 797 return(0); 798 return(rval); 799 } 800 801 frame.mii_phyaddr = phy; 802 frame.mii_regaddr = reg; 803 if (sc->dc_type == DC_TYPE_98713) { 804 phy_reg = CSR_READ_4(sc, DC_NETCFG); 805 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); 806 } 807 dc_mii_readreg(sc, &frame); 808 if (sc->dc_type == DC_TYPE_98713) 809 CSR_WRITE_4(sc, DC_NETCFG, phy_reg); 810 811 return(frame.mii_data); 812 } 813 814 static int dc_miibus_writereg(dev, phy, reg, data) 815 device_t dev; 816 int phy, reg, data; 817 { 818 struct dc_softc *sc; 819 struct dc_mii_frame frame; 820 int i, phy_reg = 0; 821 822 sc = device_get_softc(dev); 823 bzero((char *)&frame, sizeof(frame)); 824 825 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) 826 return(0); 827 828 if (DC_IS_PNIC(sc)) { 829 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE | 830 (phy << 23) | (reg << 10) | data); 831 for (i = 0; i < DC_TIMEOUT; i++) { 832 if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY)) 833 break; 834 } 835 return(0); 836 } 837 838 if (DC_IS_COMET(sc)) { 839 switch(reg) { 840 case MII_BMCR: 841 phy_reg = DC_AL_BMCR; 842 break; 843 case MII_BMSR: 844 phy_reg = DC_AL_BMSR; 845 break; 846 case MII_PHYIDR1: 847 phy_reg = DC_AL_VENID; 848 break; 849 case MII_PHYIDR2: 850 phy_reg = DC_AL_DEVID; 851 break; 852 case MII_ANAR: 853 phy_reg = DC_AL_ANAR; 854 break; 855 case MII_ANLPAR: 856 phy_reg = DC_AL_LPAR; 857 break; 858 case MII_ANER: 859 phy_reg = DC_AL_ANER; 860 break; 861 default: 862 printf("dc%d: phy_write: bad phy register %x\n", 863 sc->dc_unit, reg); 864 return(0); 865 break; 866 } 867 868 CSR_WRITE_4(sc, phy_reg, data); 869 return(0); 870 } 871 872 frame.mii_phyaddr = phy; 873 frame.mii_regaddr = reg; 874 frame.mii_data = data; 875 876 if (sc->dc_type == DC_TYPE_98713) { 877 phy_reg = CSR_READ_4(sc, DC_NETCFG); 878 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); 879 } 880 dc_mii_writereg(sc, &frame); 881 if (sc->dc_type == DC_TYPE_98713) 882 CSR_WRITE_4(sc, DC_NETCFG, phy_reg); 883 884 return(0); 885 } 886 887 static void dc_miibus_statchg(dev) 888 device_t dev; 889 { 890 struct dc_softc *sc; 891 struct mii_data *mii; 892 struct ifmedia *ifm; 893 894 sc = device_get_softc(dev); 895 if (DC_IS_ADMTEK(sc)) 896 return; 897 898 mii = device_get_softc(sc->dc_miibus); 899 ifm = &mii->mii_media; 900 if (DC_IS_DAVICOM(sc) && 901 IFM_SUBTYPE(ifm->ifm_media) == IFM_homePNA) { 902 dc_setcfg(sc, ifm->ifm_media); 903 sc->dc_if_media = ifm->ifm_media; 904 } else { 905 dc_setcfg(sc, mii->mii_media_active); 906 sc->dc_if_media = mii->mii_media_active; 907 } 908 909 return; 910 } 911 912 /* 913 * Special support for DM9102A cards with HomePNA PHYs. Note: 914 * with the Davicom DM9102A/DM9801 eval board that I have, it seems 915 * to be impossible to talk to the management interface of the DM9801 916 * PHY (its MDIO pin is not connected to anything). Consequently, 917 * the driver has to just 'know' about the additional mode and deal 918 * with it itself. *sigh* 919 */ 920 static void dc_miibus_mediainit(dev) 921 device_t dev; 922 { 923 struct dc_softc *sc; 924 struct mii_data *mii; 925 struct ifmedia *ifm; 926 int rev; 927 928 rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF; 929 930 sc = device_get_softc(dev); 931 mii = device_get_softc(sc->dc_miibus); 932 ifm = &mii->mii_media; 933 934 if (DC_IS_DAVICOM(sc) && rev >= DC_REVISION_DM9102A) 935 ifmedia_add(ifm, IFM_ETHER|IFM_homePNA, 0, NULL); 936 937 return; 938 } 939 940 #define DC_POLY 0xEDB88320 941 #define DC_BITS_512 9 942 #define DC_BITS_128 7 943 #define DC_BITS_64 6 944 945 static u_int32_t dc_crc_le(sc, addr) 946 struct dc_softc *sc; 947 caddr_t addr; 948 { 949 u_int32_t idx, bit, data, crc; 950 951 /* Compute CRC for the address value. */ 952 crc = 0xFFFFFFFF; /* initial value */ 953 954 for (idx = 0; idx < 6; idx++) { 955 for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1) 956 crc = (crc >> 1) ^ (((crc ^ data) & 1) ? DC_POLY : 0); 957 } 958 959 /* 960 * The hash table on the PNIC II and the MX98715AEC-C/D/E 961 * chips is only 128 bits wide. 962 */ 963 if (sc->dc_flags & DC_128BIT_HASH) 964 return (crc & ((1 << DC_BITS_128) - 1)); 965 966 /* The hash table on the MX98715BEC is only 64 bits wide. */ 967 if (sc->dc_flags & DC_64BIT_HASH) 968 return (crc & ((1 << DC_BITS_64) - 1)); 969 970 /* Xircom's hash filtering table is different (read: weird) */ 971 /* Xircom uses the LEAST significant bits */ 972 if (DC_IS_XIRCOM(sc)) { 973 if ((crc & 0x180) == 0x180) 974 return (crc & 0x0F) + (crc & 0x70)*3 + (14 << 4); 975 else 976 return (crc & 0x1F) + ((crc>>1) & 0xF0)*3 + (12 << 4); 977 } 978 979 return (crc & ((1 << DC_BITS_512) - 1)); 980 } 981 982 /* 983 * Calculate CRC of a multicast group address, return the lower 6 bits. 984 */ 985 static u_int32_t dc_crc_be(addr) 986 caddr_t addr; 987 { 988 u_int32_t crc, carry; 989 int i, j; 990 u_int8_t c; 991 992 /* Compute CRC for the address value. */ 993 crc = 0xFFFFFFFF; /* initial value */ 994 995 for (i = 0; i < 6; i++) { 996 c = *(addr + i); 997 for (j = 0; j < 8; j++) { 998 carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); 999 crc <<= 1; 1000 c >>= 1; 1001 if (carry) 1002 crc = (crc ^ 0x04c11db6) | carry; 1003 } 1004 } 1005 1006 /* return the filter bit position */ 1007 return((crc >> 26) & 0x0000003F); 1008 } 1009 1010 /* 1011 * 21143-style RX filter setup routine. Filter programming is done by 1012 * downloading a special setup frame into the TX engine. 21143, Macronix, 1013 * PNIC, PNIC II and Davicom chips are programmed this way. 1014 * 1015 * We always program the chip using 'hash perfect' mode, i.e. one perfect 1016 * address (our node address) and a 512-bit hash filter for multicast 1017 * frames. We also sneak the broadcast address into the hash filter since 1018 * we need that too. 1019 */ 1020 void dc_setfilt_21143(sc) 1021 struct dc_softc *sc; 1022 { 1023 struct dc_desc *sframe; 1024 u_int32_t h, *sp; 1025 struct ifmultiaddr *ifma; 1026 struct ifnet *ifp; 1027 int i; 1028 1029 ifp = &sc->arpcom.ac_if; 1030 1031 i = sc->dc_cdata.dc_tx_prod; 1032 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT); 1033 sc->dc_cdata.dc_tx_cnt++; 1034 sframe = &sc->dc_ldata->dc_tx_list[i]; 1035 sp = (u_int32_t *)&sc->dc_cdata.dc_sbuf; 1036 bzero((char *)sp, DC_SFRAME_LEN); 1037 1038 sframe->dc_data = vtophys(&sc->dc_cdata.dc_sbuf); 1039 sframe->dc_ctl = DC_SFRAME_LEN | DC_TXCTL_SETUP | DC_TXCTL_TLINK | 1040 DC_FILTER_HASHPERF | DC_TXCTL_FINT; 1041 1042 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)&sc->dc_cdata.dc_sbuf; 1043 1044 /* If we want promiscuous mode, set the allframes bit. */ 1045 if (ifp->if_flags & IFF_PROMISC) 1046 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1047 else 1048 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1049 1050 if (ifp->if_flags & IFF_ALLMULTI) 1051 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1052 else 1053 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1054 1055 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1056 if (ifma->ifma_addr->sa_family != AF_LINK) 1057 continue; 1058 h = dc_crc_le(sc, 1059 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1060 sp[h >> 4] |= 1 << (h & 0xF); 1061 } 1062 1063 if (ifp->if_flags & IFF_BROADCAST) { 1064 h = dc_crc_le(sc, (caddr_t)ðerbroadcastaddr); 1065 sp[h >> 4] |= 1 << (h & 0xF); 1066 } 1067 1068 /* Set our MAC address */ 1069 sp[39] = ((u_int16_t *)sc->arpcom.ac_enaddr)[0]; 1070 sp[40] = ((u_int16_t *)sc->arpcom.ac_enaddr)[1]; 1071 sp[41] = ((u_int16_t *)sc->arpcom.ac_enaddr)[2]; 1072 1073 sframe->dc_status = DC_TXSTAT_OWN; 1074 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 1075 1076 /* 1077 * The PNIC takes an exceedingly long time to process its 1078 * setup frame; wait 10ms after posting the setup frame 1079 * before proceeding, just so it has time to swallow its 1080 * medicine. 1081 */ 1082 DELAY(10000); 1083 1084 ifp->if_timer = 5; 1085 1086 return; 1087 } 1088 1089 void dc_setfilt_admtek(sc) 1090 struct dc_softc *sc; 1091 { 1092 struct ifnet *ifp; 1093 int h = 0; 1094 u_int32_t hashes[2] = { 0, 0 }; 1095 struct ifmultiaddr *ifma; 1096 1097 ifp = &sc->arpcom.ac_if; 1098 1099 /* Init our MAC address */ 1100 CSR_WRITE_4(sc, DC_AL_PAR0, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); 1101 CSR_WRITE_4(sc, DC_AL_PAR1, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); 1102 1103 /* If we want promiscuous mode, set the allframes bit. */ 1104 if (ifp->if_flags & IFF_PROMISC) 1105 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1106 else 1107 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1108 1109 if (ifp->if_flags & IFF_ALLMULTI) 1110 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1111 else 1112 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1113 1114 /* first, zot all the existing hash bits */ 1115 CSR_WRITE_4(sc, DC_AL_MAR0, 0); 1116 CSR_WRITE_4(sc, DC_AL_MAR1, 0); 1117 1118 /* 1119 * If we're already in promisc or allmulti mode, we 1120 * don't have to bother programming the multicast filter. 1121 */ 1122 if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI)) 1123 return; 1124 1125 /* now program new ones */ 1126 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1127 if (ifma->ifma_addr->sa_family != AF_LINK) 1128 continue; 1129 h = dc_crc_be(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1130 if (h < 32) 1131 hashes[0] |= (1 << h); 1132 else 1133 hashes[1] |= (1 << (h - 32)); 1134 } 1135 1136 CSR_WRITE_4(sc, DC_AL_MAR0, hashes[0]); 1137 CSR_WRITE_4(sc, DC_AL_MAR1, hashes[1]); 1138 1139 return; 1140 } 1141 1142 void dc_setfilt_asix(sc) 1143 struct dc_softc *sc; 1144 { 1145 struct ifnet *ifp; 1146 int h = 0; 1147 u_int32_t hashes[2] = { 0, 0 }; 1148 struct ifmultiaddr *ifma; 1149 1150 ifp = &sc->arpcom.ac_if; 1151 1152 /* Init our MAC address */ 1153 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR0); 1154 CSR_WRITE_4(sc, DC_AX_FILTDATA, 1155 *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); 1156 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR1); 1157 CSR_WRITE_4(sc, DC_AX_FILTDATA, 1158 *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); 1159 1160 /* If we want promiscuous mode, set the allframes bit. */ 1161 if (ifp->if_flags & IFF_PROMISC) 1162 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1163 else 1164 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1165 1166 if (ifp->if_flags & IFF_ALLMULTI) 1167 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1168 else 1169 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1170 1171 /* 1172 * The ASIX chip has a special bit to enable reception 1173 * of broadcast frames. 1174 */ 1175 if (ifp->if_flags & IFF_BROADCAST) 1176 DC_SETBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); 1177 else 1178 DC_CLRBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); 1179 1180 /* first, zot all the existing hash bits */ 1181 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); 1182 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); 1183 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); 1184 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); 1185 1186 /* 1187 * If we're already in promisc or allmulti mode, we 1188 * don't have to bother programming the multicast filter. 1189 */ 1190 if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI)) 1191 return; 1192 1193 /* now program new ones */ 1194 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1195 if (ifma->ifma_addr->sa_family != AF_LINK) 1196 continue; 1197 h = dc_crc_be(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1198 if (h < 32) 1199 hashes[0] |= (1 << h); 1200 else 1201 hashes[1] |= (1 << (h - 32)); 1202 } 1203 1204 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); 1205 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]); 1206 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); 1207 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]); 1208 1209 return; 1210 } 1211 1212 void dc_setfilt_xircom(sc) 1213 struct dc_softc *sc; 1214 { 1215 struct dc_desc *sframe; 1216 u_int32_t h, *sp; 1217 struct ifmultiaddr *ifma; 1218 struct ifnet *ifp; 1219 int i; 1220 1221 ifp = &sc->arpcom.ac_if; 1222 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON)); 1223 1224 i = sc->dc_cdata.dc_tx_prod; 1225 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT); 1226 sc->dc_cdata.dc_tx_cnt++; 1227 sframe = &sc->dc_ldata->dc_tx_list[i]; 1228 sp = (u_int32_t *)&sc->dc_cdata.dc_sbuf; 1229 bzero((char *)sp, DC_SFRAME_LEN); 1230 1231 sframe->dc_data = vtophys(&sc->dc_cdata.dc_sbuf); 1232 sframe->dc_ctl = DC_SFRAME_LEN | DC_TXCTL_SETUP | DC_TXCTL_TLINK | 1233 DC_FILTER_HASHPERF | DC_TXCTL_FINT; 1234 1235 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)&sc->dc_cdata.dc_sbuf; 1236 1237 /* If we want promiscuous mode, set the allframes bit. */ 1238 if (ifp->if_flags & IFF_PROMISC) 1239 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1240 else 1241 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1242 1243 if (ifp->if_flags & IFF_ALLMULTI) 1244 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1245 else 1246 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1247 1248 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1249 if (ifma->ifma_addr->sa_family != AF_LINK) 1250 continue; 1251 h = dc_crc_le(sc, 1252 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1253 sp[h >> 4] |= 1 << (h & 0xF); 1254 } 1255 1256 if (ifp->if_flags & IFF_BROADCAST) { 1257 h = dc_crc_le(sc, (caddr_t)ðerbroadcastaddr); 1258 sp[h >> 4] |= 1 << (h & 0xF); 1259 } 1260 1261 /* Set our MAC address */ 1262 sp[0] = ((u_int16_t *)sc->arpcom.ac_enaddr)[0]; 1263 sp[1] = ((u_int16_t *)sc->arpcom.ac_enaddr)[1]; 1264 sp[2] = ((u_int16_t *)sc->arpcom.ac_enaddr)[2]; 1265 1266 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 1267 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); 1268 ifp->if_flags |= IFF_RUNNING; 1269 sframe->dc_status = DC_TXSTAT_OWN; 1270 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 1271 1272 /* 1273 * wait some time... 1274 */ 1275 DELAY(1000); 1276 1277 ifp->if_timer = 5; 1278 1279 return; 1280 } 1281 1282 static void dc_setfilt(sc) 1283 struct dc_softc *sc; 1284 { 1285 if (DC_IS_INTEL(sc) || DC_IS_MACRONIX(sc) || DC_IS_PNIC(sc) || 1286 DC_IS_PNICII(sc) || DC_IS_DAVICOM(sc)) 1287 dc_setfilt_21143(sc); 1288 1289 if (DC_IS_ASIX(sc)) 1290 dc_setfilt_asix(sc); 1291 1292 if (DC_IS_ADMTEK(sc)) 1293 dc_setfilt_admtek(sc); 1294 1295 if (DC_IS_XIRCOM(sc)) 1296 dc_setfilt_xircom(sc); 1297 1298 return; 1299 } 1300 1301 /* 1302 * In order to fiddle with the 1303 * 'full-duplex' and '100Mbps' bits in the netconfig register, we 1304 * first have to put the transmit and/or receive logic in the idle state. 1305 */ 1306 static void dc_setcfg(sc, media) 1307 struct dc_softc *sc; 1308 int media; 1309 { 1310 int i, restart = 0; 1311 u_int32_t isr; 1312 1313 if (IFM_SUBTYPE(media) == IFM_NONE) 1314 return; 1315 1316 if (CSR_READ_4(sc, DC_NETCFG) & (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON)) { 1317 restart = 1; 1318 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON)); 1319 1320 for (i = 0; i < DC_TIMEOUT; i++) { 1321 isr = CSR_READ_4(sc, DC_ISR); 1322 if (isr & DC_ISR_TX_IDLE && 1323 (isr & DC_ISR_RX_STATE) == DC_RXSTATE_STOPPED) 1324 break; 1325 DELAY(10); 1326 } 1327 1328 if (i == DC_TIMEOUT) 1329 printf("dc%d: failed to force tx and " 1330 "rx to idle state\n", sc->dc_unit); 1331 } 1332 1333 if (IFM_SUBTYPE(media) == IFM_100_TX) { 1334 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); 1335 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); 1336 if (sc->dc_pmode == DC_PMODE_MII) { 1337 int watchdogreg; 1338 1339 if (DC_IS_INTEL(sc)) { 1340 /* there's a write enable bit here that reads as 1 */ 1341 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); 1342 watchdogreg &= ~DC_WDOG_CTLWREN; 1343 watchdogreg |= DC_WDOG_JABBERDIS; 1344 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); 1345 } else { 1346 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); 1347 } 1348 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS| 1349 DC_NETCFG_PORTSEL|DC_NETCFG_SCRAMBLER)); 1350 if (sc->dc_type == DC_TYPE_98713) 1351 DC_SETBIT(sc, DC_NETCFG, (DC_NETCFG_PCS| 1352 DC_NETCFG_SCRAMBLER)); 1353 if (!DC_IS_DAVICOM(sc)) 1354 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1355 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1356 if (DC_IS_INTEL(sc)) 1357 dc_apply_fixup(sc, IFM_AUTO); 1358 } else { 1359 if (DC_IS_PNIC(sc)) { 1360 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_SPEEDSEL); 1361 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); 1362 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); 1363 } 1364 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1365 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1366 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); 1367 if (DC_IS_INTEL(sc)) 1368 dc_apply_fixup(sc, 1369 (media & IFM_GMASK) == IFM_FDX ? 1370 IFM_100_TX|IFM_FDX : IFM_100_TX); 1371 } 1372 } 1373 1374 if (IFM_SUBTYPE(media) == IFM_10_T) { 1375 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); 1376 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); 1377 if (sc->dc_pmode == DC_PMODE_MII) { 1378 int watchdogreg; 1379 1380 /* there's a write enable bit here that reads as 1 */ 1381 if (DC_IS_INTEL(sc)) { 1382 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); 1383 watchdogreg &= ~DC_WDOG_CTLWREN; 1384 watchdogreg |= DC_WDOG_JABBERDIS; 1385 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); 1386 } else { 1387 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); 1388 } 1389 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS| 1390 DC_NETCFG_PORTSEL|DC_NETCFG_SCRAMBLER)); 1391 if (sc->dc_type == DC_TYPE_98713) 1392 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1393 if (!DC_IS_DAVICOM(sc)) 1394 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1395 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1396 if (DC_IS_INTEL(sc)) 1397 dc_apply_fixup(sc, IFM_AUTO); 1398 } else { 1399 if (DC_IS_PNIC(sc)) { 1400 DC_PN_GPIO_CLRBIT(sc, DC_PN_GPIO_SPEEDSEL); 1401 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); 1402 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); 1403 } 1404 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1405 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1406 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); 1407 if (DC_IS_INTEL(sc)) { 1408 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 1409 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1410 if ((media & IFM_GMASK) == IFM_FDX) 1411 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3D); 1412 else 1413 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3F); 1414 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 1415 DC_CLRBIT(sc, DC_10BTCTRL, 1416 DC_TCTL_AUTONEGENBL); 1417 dc_apply_fixup(sc, 1418 (media & IFM_GMASK) == IFM_FDX ? 1419 IFM_10_T|IFM_FDX : IFM_10_T); 1420 DELAY(20000); 1421 } 1422 } 1423 } 1424 1425 /* 1426 * If this is a Davicom DM9102A card with a DM9801 HomePNA 1427 * PHY and we want HomePNA mode, set the portsel bit to turn 1428 * on the external MII port. 1429 */ 1430 if (DC_IS_DAVICOM(sc)) { 1431 if (IFM_SUBTYPE(media) == IFM_homePNA) { 1432 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1433 sc->dc_link = 1; 1434 } else { 1435 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1436 } 1437 } 1438 1439 if ((media & IFM_GMASK) == IFM_FDX) { 1440 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 1441 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) 1442 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); 1443 } else { 1444 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 1445 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) 1446 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); 1447 } 1448 1449 if (restart) 1450 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON|DC_NETCFG_RX_ON); 1451 1452 return; 1453 } 1454 1455 static void dc_reset(sc) 1456 struct dc_softc *sc; 1457 { 1458 register int i; 1459 1460 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); 1461 1462 for (i = 0; i < DC_TIMEOUT; i++) { 1463 DELAY(10); 1464 if (!(CSR_READ_4(sc, DC_BUSCTL) & DC_BUSCTL_RESET)) 1465 break; 1466 } 1467 1468 if (DC_IS_ASIX(sc) || DC_IS_ADMTEK(sc) || 1469 DC_IS_XIRCOM(sc) || DC_IS_INTEL(sc)) { 1470 DELAY(10000); 1471 DC_CLRBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); 1472 i = 0; 1473 } 1474 1475 if (i == DC_TIMEOUT) 1476 printf("dc%d: reset never completed!\n", sc->dc_unit); 1477 1478 /* Wait a little while for the chip to get its brains in order. */ 1479 DELAY(1000); 1480 1481 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 1482 CSR_WRITE_4(sc, DC_BUSCTL, 0x00000000); 1483 CSR_WRITE_4(sc, DC_NETCFG, 0x00000000); 1484 1485 /* 1486 * Bring the SIA out of reset. In some cases, it looks 1487 * like failing to unreset the SIA soon enough gets it 1488 * into a state where it will never come out of reset 1489 * until we reset the whole chip again. 1490 */ 1491 if (DC_IS_INTEL(sc)) { 1492 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 1493 CSR_WRITE_4(sc, DC_10BTCTRL, 0); 1494 CSR_WRITE_4(sc, DC_WATCHDOG, 0); 1495 } 1496 1497 return; 1498 } 1499 1500 static struct dc_type *dc_devtype(dev) 1501 device_t dev; 1502 { 1503 struct dc_type *t; 1504 u_int32_t rev; 1505 1506 t = dc_devs; 1507 1508 while(t->dc_name != NULL) { 1509 if ((pci_get_vendor(dev) == t->dc_vid) && 1510 (pci_get_device(dev) == t->dc_did)) { 1511 /* Check the PCI revision */ 1512 rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF; 1513 if (t->dc_did == DC_DEVICEID_98713 && 1514 rev >= DC_REVISION_98713A) 1515 t++; 1516 if (t->dc_did == DC_DEVICEID_98713_CP && 1517 rev >= DC_REVISION_98713A) 1518 t++; 1519 if (t->dc_did == DC_DEVICEID_987x5 && 1520 rev >= DC_REVISION_98715AEC_C) 1521 t++; 1522 if (t->dc_did == DC_DEVICEID_987x5 && 1523 rev >= DC_REVISION_98725) 1524 t++; 1525 if (t->dc_did == DC_DEVICEID_AX88140A && 1526 rev >= DC_REVISION_88141) 1527 t++; 1528 if (t->dc_did == DC_DEVICEID_82C168 && 1529 rev >= DC_REVISION_82C169) 1530 t++; 1531 if (t->dc_did == DC_DEVICEID_DM9102 && 1532 rev >= DC_REVISION_DM9102A) 1533 t++; 1534 return(t); 1535 } 1536 t++; 1537 } 1538 1539 return(NULL); 1540 } 1541 1542 /* 1543 * Probe for a 21143 or clone chip. Check the PCI vendor and device 1544 * IDs against our list and return a device name if we find a match. 1545 * We do a little bit of extra work to identify the exact type of 1546 * chip. The MX98713 and MX98713A have the same PCI vendor/device ID, 1547 * but different revision IDs. The same is true for 98715/98715A 1548 * chips and the 98725, as well as the ASIX and ADMtek chips. In some 1549 * cases, the exact chip revision affects driver behavior. 1550 */ 1551 static int dc_probe(dev) 1552 device_t dev; 1553 { 1554 struct dc_type *t; 1555 1556 t = dc_devtype(dev); 1557 1558 if (t != NULL) { 1559 device_set_desc(dev, t->dc_name); 1560 return(0); 1561 } 1562 1563 return(ENXIO); 1564 } 1565 1566 static void dc_acpi(dev) 1567 device_t dev; 1568 { 1569 int unit; 1570 1571 unit = device_get_unit(dev); 1572 1573 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 1574 u_int32_t iobase, membase, irq; 1575 1576 /* Save important PCI config data. */ 1577 iobase = pci_read_config(dev, DC_PCI_CFBIO, 4); 1578 membase = pci_read_config(dev, DC_PCI_CFBMA, 4); 1579 irq = pci_read_config(dev, DC_PCI_CFIT, 4); 1580 1581 /* Reset the power state. */ 1582 printf("dc%d: chip is in D%d power mode " 1583 "-- setting to D0\n", unit, 1584 pci_get_powerstate(dev)); 1585 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 1586 1587 /* Restore PCI config data. */ 1588 pci_write_config(dev, DC_PCI_CFBIO, iobase, 4); 1589 pci_write_config(dev, DC_PCI_CFBMA, membase, 4); 1590 pci_write_config(dev, DC_PCI_CFIT, irq, 4); 1591 } 1592 1593 return; 1594 } 1595 1596 static void dc_apply_fixup(sc, media) 1597 struct dc_softc *sc; 1598 int media; 1599 { 1600 struct dc_mediainfo *m; 1601 u_int8_t *p; 1602 int i; 1603 u_int32_t reg; 1604 1605 m = sc->dc_mi; 1606 1607 while (m != NULL) { 1608 if (m->dc_media == media) 1609 break; 1610 m = m->dc_next; 1611 } 1612 1613 if (m == NULL) 1614 return; 1615 1616 for (i = 0, p = m->dc_reset_ptr; i < m->dc_reset_len; i++, p += 2) { 1617 reg = (p[0] | (p[1] << 8)) << 16; 1618 CSR_WRITE_4(sc, DC_WATCHDOG, reg); 1619 } 1620 1621 for (i = 0, p = m->dc_gp_ptr; i < m->dc_gp_len; i++, p += 2) { 1622 reg = (p[0] | (p[1] << 8)) << 16; 1623 CSR_WRITE_4(sc, DC_WATCHDOG, reg); 1624 } 1625 1626 return; 1627 } 1628 1629 static void dc_decode_leaf_sia(sc, l) 1630 struct dc_softc *sc; 1631 struct dc_eblock_sia *l; 1632 { 1633 struct dc_mediainfo *m; 1634 1635 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT); 1636 bzero(m, sizeof(struct dc_mediainfo)); 1637 if (l->dc_sia_code == DC_SIA_CODE_10BT) 1638 m->dc_media = IFM_10_T; 1639 1640 if (l->dc_sia_code == DC_SIA_CODE_10BT_FDX) 1641 m->dc_media = IFM_10_T|IFM_FDX; 1642 1643 if (l->dc_sia_code == DC_SIA_CODE_10B2) 1644 m->dc_media = IFM_10_2; 1645 1646 if (l->dc_sia_code == DC_SIA_CODE_10B5) 1647 m->dc_media = IFM_10_5; 1648 1649 m->dc_gp_len = 2; 1650 m->dc_gp_ptr = (u_int8_t *)&l->dc_sia_gpio_ctl; 1651 1652 m->dc_next = sc->dc_mi; 1653 sc->dc_mi = m; 1654 1655 sc->dc_pmode = DC_PMODE_SIA; 1656 1657 return; 1658 } 1659 1660 static void dc_decode_leaf_sym(sc, l) 1661 struct dc_softc *sc; 1662 struct dc_eblock_sym *l; 1663 { 1664 struct dc_mediainfo *m; 1665 1666 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT); 1667 bzero(m, sizeof(struct dc_mediainfo)); 1668 if (l->dc_sym_code == DC_SYM_CODE_100BT) 1669 m->dc_media = IFM_100_TX; 1670 1671 if (l->dc_sym_code == DC_SYM_CODE_100BT_FDX) 1672 m->dc_media = IFM_100_TX|IFM_FDX; 1673 1674 m->dc_gp_len = 2; 1675 m->dc_gp_ptr = (u_int8_t *)&l->dc_sym_gpio_ctl; 1676 1677 m->dc_next = sc->dc_mi; 1678 sc->dc_mi = m; 1679 1680 sc->dc_pmode = DC_PMODE_SYM; 1681 1682 return; 1683 } 1684 1685 static void dc_decode_leaf_mii(sc, l) 1686 struct dc_softc *sc; 1687 struct dc_eblock_mii *l; 1688 { 1689 u_int8_t *p; 1690 struct dc_mediainfo *m; 1691 1692 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT); 1693 bzero(m, sizeof(struct dc_mediainfo)); 1694 /* We abuse IFM_AUTO to represent MII. */ 1695 m->dc_media = IFM_AUTO; 1696 m->dc_gp_len = l->dc_gpr_len; 1697 1698 p = (u_int8_t *)l; 1699 p += sizeof(struct dc_eblock_mii); 1700 m->dc_gp_ptr = p; 1701 p += 2 * l->dc_gpr_len; 1702 m->dc_reset_len = *p; 1703 p++; 1704 m->dc_reset_ptr = p; 1705 1706 m->dc_next = sc->dc_mi; 1707 sc->dc_mi = m; 1708 1709 return; 1710 } 1711 1712 static void dc_parse_21143_srom(sc) 1713 struct dc_softc *sc; 1714 { 1715 struct dc_leaf_hdr *lhdr; 1716 struct dc_eblock_hdr *hdr; 1717 int i, loff; 1718 char *ptr; 1719 1720 loff = sc->dc_srom[27]; 1721 lhdr = (struct dc_leaf_hdr *)&(sc->dc_srom[loff]); 1722 1723 ptr = (char *)lhdr; 1724 ptr += sizeof(struct dc_leaf_hdr) - 1; 1725 for (i = 0; i < lhdr->dc_mcnt; i++) { 1726 hdr = (struct dc_eblock_hdr *)ptr; 1727 switch(hdr->dc_type) { 1728 case DC_EBLOCK_MII: 1729 dc_decode_leaf_mii(sc, (struct dc_eblock_mii *)hdr); 1730 break; 1731 case DC_EBLOCK_SIA: 1732 dc_decode_leaf_sia(sc, (struct dc_eblock_sia *)hdr); 1733 break; 1734 case DC_EBLOCK_SYM: 1735 dc_decode_leaf_sym(sc, (struct dc_eblock_sym *)hdr); 1736 break; 1737 default: 1738 /* Don't care. Yet. */ 1739 break; 1740 } 1741 ptr += (hdr->dc_len & 0x7F); 1742 ptr++; 1743 } 1744 1745 return; 1746 } 1747 1748 /* 1749 * Attach the interface. Allocate softc structures, do ifmedia 1750 * setup and ethernet/BPF attach. 1751 */ 1752 static int dc_attach(dev) 1753 device_t dev; 1754 { 1755 int tmp = 0; 1756 u_char eaddr[ETHER_ADDR_LEN]; 1757 u_int32_t command; 1758 struct dc_softc *sc; 1759 struct ifnet *ifp; 1760 u_int32_t revision; 1761 int unit, error = 0, rid, mac_offset; 1762 1763 sc = device_get_softc(dev); 1764 unit = device_get_unit(dev); 1765 bzero(sc, sizeof(struct dc_softc)); 1766 1767 mtx_init(&sc->dc_mtx, device_get_nameunit(dev), MTX_DEF | MTX_RECURSE); 1768 DC_LOCK(sc); 1769 1770 /* 1771 * Handle power management nonsense. 1772 */ 1773 dc_acpi(dev); 1774 1775 /* 1776 * Map control/status registers. 1777 */ 1778 pci_enable_busmaster(dev); 1779 pci_enable_io(dev, PCIM_CMD_PORTEN); 1780 pci_enable_io(dev, PCIM_CMD_MEMEN); 1781 command = pci_read_config(dev, PCIR_COMMAND, 4); 1782 1783 #ifdef DC_USEIOSPACE 1784 if (!(command & PCIM_CMD_PORTEN)) { 1785 printf("dc%d: failed to enable I/O ports!\n", unit); 1786 error = ENXIO; 1787 goto fail; 1788 } 1789 #else 1790 if (!(command & PCIM_CMD_MEMEN)) { 1791 printf("dc%d: failed to enable memory mapping!\n", unit); 1792 error = ENXIO; 1793 goto fail; 1794 } 1795 #endif 1796 1797 rid = DC_RID; 1798 sc->dc_res = bus_alloc_resource(dev, DC_RES, &rid, 1799 0, ~0, 1, RF_ACTIVE); 1800 1801 if (sc->dc_res == NULL) { 1802 printf("dc%d: couldn't map ports/memory\n", unit); 1803 error = ENXIO; 1804 goto fail; 1805 } 1806 1807 sc->dc_btag = rman_get_bustag(sc->dc_res); 1808 sc->dc_bhandle = rman_get_bushandle(sc->dc_res); 1809 1810 /* Allocate interrupt */ 1811 rid = 0; 1812 sc->dc_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 1813 RF_SHAREABLE | RF_ACTIVE); 1814 1815 if (sc->dc_irq == NULL) { 1816 printf("dc%d: couldn't map interrupt\n", unit); 1817 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); 1818 error = ENXIO; 1819 goto fail; 1820 } 1821 1822 error = bus_setup_intr(dev, sc->dc_irq, INTR_TYPE_NET | 1823 (IS_MPSAFE ? INTR_MPSAFE : 0), 1824 dc_intr, sc, &sc->dc_intrhand); 1825 1826 if (error) { 1827 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq); 1828 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); 1829 printf("dc%d: couldn't set up irq\n", unit); 1830 goto fail; 1831 } 1832 1833 /* Need this info to decide on a chip type. */ 1834 sc->dc_info = dc_devtype(dev); 1835 revision = pci_read_config(dev, DC_PCI_CFRV, 4) & 0x000000FF; 1836 1837 switch(sc->dc_info->dc_did) { 1838 case DC_DEVICEID_21143: 1839 sc->dc_type = DC_TYPE_21143; 1840 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 1841 sc->dc_flags |= DC_REDUCED_MII_POLL; 1842 /* Save EEPROM contents so we can parse them later. */ 1843 dc_read_eeprom(sc, (caddr_t)&sc->dc_srom, 0, 512, 0); 1844 break; 1845 case DC_DEVICEID_DM9100: 1846 case DC_DEVICEID_DM9102: 1847 sc->dc_type = DC_TYPE_DM9102; 1848 sc->dc_flags |= DC_TX_COALESCE|DC_TX_INTR_ALWAYS; 1849 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_TX_STORENFWD; 1850 sc->dc_pmode = DC_PMODE_MII; 1851 /* Increase the latency timer value. */ 1852 command = pci_read_config(dev, DC_PCI_CFLT, 4); 1853 command &= 0xFFFF00FF; 1854 command |= 0x00008000; 1855 pci_write_config(dev, DC_PCI_CFLT, command, 4); 1856 break; 1857 case DC_DEVICEID_AL981: 1858 sc->dc_type = DC_TYPE_AL981; 1859 sc->dc_flags |= DC_TX_USE_TX_INTR; 1860 sc->dc_flags |= DC_TX_ADMTEK_WAR; 1861 sc->dc_pmode = DC_PMODE_MII; 1862 break; 1863 case DC_DEVICEID_AN985: 1864 case DC_DEVICEID_FE2500: 1865 case DC_DEVICEID_EN2242: 1866 sc->dc_type = DC_TYPE_AN985; 1867 sc->dc_flags |= DC_TX_USE_TX_INTR; 1868 sc->dc_flags |= DC_TX_ADMTEK_WAR; 1869 sc->dc_pmode = DC_PMODE_MII; 1870 break; 1871 case DC_DEVICEID_98713: 1872 case DC_DEVICEID_98713_CP: 1873 if (revision < DC_REVISION_98713A) { 1874 sc->dc_type = DC_TYPE_98713; 1875 } 1876 if (revision >= DC_REVISION_98713A) { 1877 sc->dc_type = DC_TYPE_98713A; 1878 sc->dc_flags |= DC_21143_NWAY; 1879 } 1880 sc->dc_flags |= DC_REDUCED_MII_POLL; 1881 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 1882 break; 1883 case DC_DEVICEID_987x5: 1884 case DC_DEVICEID_EN1217: 1885 /* 1886 * Macronix MX98715AEC-C/D/E parts have only a 1887 * 128-bit hash table. We need to deal with these 1888 * in the same manner as the PNIC II so that we 1889 * get the right number of bits out of the 1890 * CRC routine. 1891 */ 1892 if (revision >= DC_REVISION_98715AEC_C && 1893 revision < DC_REVISION_98725) 1894 sc->dc_flags |= DC_128BIT_HASH; 1895 sc->dc_type = DC_TYPE_987x5; 1896 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 1897 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; 1898 break; 1899 case DC_DEVICEID_98727: 1900 sc->dc_type = DC_TYPE_987x5; 1901 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; 1902 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; 1903 break; 1904 case DC_DEVICEID_82C115: 1905 sc->dc_type = DC_TYPE_PNICII; 1906 sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR|DC_128BIT_HASH; 1907 sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; 1908 break; 1909 case DC_DEVICEID_82C168: 1910 sc->dc_type = DC_TYPE_PNIC; 1911 sc->dc_flags |= DC_TX_STORENFWD|DC_TX_INTR_ALWAYS; 1912 sc->dc_flags |= DC_PNIC_RX_BUG_WAR; 1913 sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, M_NOWAIT); 1914 if (revision < DC_REVISION_82C169) 1915 sc->dc_pmode = DC_PMODE_SYM; 1916 break; 1917 case DC_DEVICEID_AX88140A: 1918 sc->dc_type = DC_TYPE_ASIX; 1919 sc->dc_flags |= DC_TX_USE_TX_INTR|DC_TX_INTR_FIRSTFRAG; 1920 sc->dc_flags |= DC_REDUCED_MII_POLL; 1921 sc->dc_pmode = DC_PMODE_MII; 1922 break; 1923 case DC_DEVICEID_X3201: 1924 sc->dc_type = DC_TYPE_XIRCOM; 1925 sc->dc_flags |= DC_TX_INTR_ALWAYS | DC_TX_COALESCE; 1926 /* 1927 * We don't actually need to coalesce, but we're doing 1928 * it to obtain a double word aligned buffer. 1929 */ 1930 break; 1931 default: 1932 printf("dc%d: unknown device: %x\n", sc->dc_unit, 1933 sc->dc_info->dc_did); 1934 break; 1935 } 1936 1937 /* Save the cache line size. */ 1938 if (DC_IS_DAVICOM(sc)) 1939 sc->dc_cachesize = 0; 1940 else 1941 sc->dc_cachesize = pci_read_config(dev, 1942 DC_PCI_CFLT, 4) & 0xFF; 1943 1944 /* Reset the adapter. */ 1945 dc_reset(sc); 1946 1947 /* Take 21143 out of snooze mode */ 1948 if (DC_IS_INTEL(sc) || DC_IS_XIRCOM(sc)) { 1949 command = pci_read_config(dev, DC_PCI_CFDD, 4); 1950 command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE); 1951 pci_write_config(dev, DC_PCI_CFDD, command, 4); 1952 } 1953 1954 /* 1955 * Try to learn something about the supported media. 1956 * We know that ASIX and ADMtek and Davicom devices 1957 * will *always* be using MII media, so that's a no-brainer. 1958 * The tricky ones are the Macronix/PNIC II and the 1959 * Intel 21143. 1960 */ 1961 if (DC_IS_INTEL(sc)) 1962 dc_parse_21143_srom(sc); 1963 else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 1964 if (sc->dc_type == DC_TYPE_98713) 1965 sc->dc_pmode = DC_PMODE_MII; 1966 else 1967 sc->dc_pmode = DC_PMODE_SYM; 1968 } else if (!sc->dc_pmode) 1969 sc->dc_pmode = DC_PMODE_MII; 1970 1971 /* 1972 * Get station address from the EEPROM. 1973 */ 1974 switch(sc->dc_type) { 1975 case DC_TYPE_98713: 1976 case DC_TYPE_98713A: 1977 case DC_TYPE_987x5: 1978 case DC_TYPE_PNICII: 1979 dc_read_eeprom(sc, (caddr_t)&mac_offset, 1980 (DC_EE_NODEADDR_OFFSET / 2), 1, 0); 1981 dc_read_eeprom(sc, (caddr_t)&eaddr, (mac_offset / 2), 3, 0); 1982 break; 1983 case DC_TYPE_PNIC: 1984 dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1); 1985 break; 1986 case DC_TYPE_DM9102: 1987 case DC_TYPE_21143: 1988 case DC_TYPE_ASIX: 1989 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 1990 break; 1991 case DC_TYPE_AL981: 1992 case DC_TYPE_AN985: 1993 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_AL_EE_NODEADDR, 3, 0); 1994 break; 1995 case DC_TYPE_XIRCOM: 1996 dc_read_eeprom(sc, (caddr_t)&eaddr, 3, 3, 0); 1997 break; 1998 default: 1999 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2000 break; 2001 } 2002 2003 /* 2004 * A 21143 or clone chip was detected. Inform the world. 2005 */ 2006 printf("dc%d: Ethernet address: %6D\n", unit, eaddr, ":"); 2007 2008 sc->dc_unit = unit; 2009 bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 2010 2011 sc->dc_ldata = contigmalloc(sizeof(struct dc_list_data), M_DEVBUF, 2012 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 2013 2014 if (sc->dc_ldata == NULL) { 2015 printf("dc%d: no memory for list buffers!\n", unit); 2016 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand); 2017 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq); 2018 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); 2019 error = ENXIO; 2020 goto fail; 2021 } 2022 2023 bzero(sc->dc_ldata, sizeof(struct dc_list_data)); 2024 2025 ifp = &sc->arpcom.ac_if; 2026 ifp->if_softc = sc; 2027 ifp->if_unit = unit; 2028 ifp->if_name = "dc"; 2029 /* XXX: bleah, MTU gets overwritten in ether_ifattach() */ 2030 ifp->if_mtu = ETHERMTU; 2031 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 2032 ifp->if_ioctl = dc_ioctl; 2033 ifp->if_output = ether_output; 2034 ifp->if_start = dc_start; 2035 ifp->if_watchdog = dc_watchdog; 2036 ifp->if_init = dc_init; 2037 ifp->if_baudrate = 10000000; 2038 ifp->if_snd.ifq_maxlen = DC_TX_LIST_CNT - 1; 2039 ifp->if_mpsafe = IS_MPSAFE; 2040 2041 /* 2042 * Do MII setup. If this is a 21143, check for a PHY on the 2043 * MII bus after applying any necessary fixups to twiddle the 2044 * GPIO bits. If we don't end up finding a PHY, restore the 2045 * old selection (SIA only or SIA/SYM) and attach the dcphy 2046 * driver instead. 2047 */ 2048 if (DC_IS_INTEL(sc)) { 2049 dc_apply_fixup(sc, IFM_AUTO); 2050 tmp = sc->dc_pmode; 2051 sc->dc_pmode = DC_PMODE_MII; 2052 } 2053 2054 error = mii_phy_probe(dev, &sc->dc_miibus, 2055 dc_ifmedia_upd, dc_ifmedia_sts); 2056 2057 if (error && DC_IS_INTEL(sc)) { 2058 sc->dc_pmode = tmp; 2059 if (sc->dc_pmode != DC_PMODE_SIA) 2060 sc->dc_pmode = DC_PMODE_SYM; 2061 sc->dc_flags |= DC_21143_NWAY; 2062 mii_phy_probe(dev, &sc->dc_miibus, 2063 dc_ifmedia_upd, dc_ifmedia_sts); 2064 /* 2065 * For non-MII cards, we need to have the 21143 2066 * drive the LEDs. Except there are some systems 2067 * like the NEC VersaPro NoteBook PC which have no 2068 * LEDs, and twiddling these bits has adverse effects 2069 * on them. (I.e. you suddenly can't get a link.) 2070 */ 2071 if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033) 2072 sc->dc_flags |= DC_TULIP_LEDS; 2073 error = 0; 2074 } 2075 2076 if (error) { 2077 printf("dc%d: MII without any PHY!\n", sc->dc_unit); 2078 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand); 2079 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq); 2080 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); 2081 error = ENXIO; 2082 goto fail; 2083 } 2084 2085 if (DC_IS_XIRCOM(sc)) { 2086 /* 2087 * setup General Purpose Port mode and data so the tulip 2088 * can talk to the MII. 2089 */ 2090 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN | 2091 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 2092 DELAY(10); 2093 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN | 2094 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 2095 DELAY(10); 2096 } 2097 2098 /* 2099 * Call MI attach routine. 2100 */ 2101 ether_ifattach(ifp, ETHER_BPF_SUPPORTED); 2102 callout_init(&sc->dc_stat_ch, IS_MPSAFE); 2103 2104 #ifdef SRM_MEDIA 2105 sc->dc_srm_media = 0; 2106 2107 /* Remember the SRM console media setting */ 2108 if (DC_IS_INTEL(sc)) { 2109 command = pci_read_config(dev, DC_PCI_CFDD, 4); 2110 command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE); 2111 switch ((command >> 8) & 0xff) { 2112 case 3: 2113 sc->dc_srm_media = IFM_10_T; 2114 break; 2115 case 4: 2116 sc->dc_srm_media = IFM_10_T | IFM_FDX; 2117 break; 2118 case 5: 2119 sc->dc_srm_media = IFM_100_TX; 2120 break; 2121 case 6: 2122 sc->dc_srm_media = IFM_100_TX | IFM_FDX; 2123 break; 2124 } 2125 if (sc->dc_srm_media) 2126 sc->dc_srm_media |= IFM_ACTIVE | IFM_ETHER; 2127 } 2128 #endif 2129 2130 DC_UNLOCK(sc); 2131 return(0); 2132 2133 fail: 2134 DC_UNLOCK(sc); 2135 mtx_destroy(&sc->dc_mtx); 2136 return(error); 2137 } 2138 2139 static int dc_detach(dev) 2140 device_t dev; 2141 { 2142 struct dc_softc *sc; 2143 struct ifnet *ifp; 2144 struct dc_mediainfo *m; 2145 2146 sc = device_get_softc(dev); 2147 2148 DC_LOCK(sc); 2149 2150 ifp = &sc->arpcom.ac_if; 2151 2152 dc_stop(sc); 2153 ether_ifdetach(ifp, ETHER_BPF_SUPPORTED); 2154 2155 bus_generic_detach(dev); 2156 device_delete_child(dev, sc->dc_miibus); 2157 2158 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand); 2159 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq); 2160 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); 2161 2162 contigfree(sc->dc_ldata, sizeof(struct dc_list_data), M_DEVBUF); 2163 if (sc->dc_pnic_rx_buf != NULL) 2164 free(sc->dc_pnic_rx_buf, M_DEVBUF); 2165 2166 while(sc->dc_mi != NULL) { 2167 m = sc->dc_mi->dc_next; 2168 free(sc->dc_mi, M_DEVBUF); 2169 sc->dc_mi = m; 2170 } 2171 2172 DC_UNLOCK(sc); 2173 mtx_destroy(&sc->dc_mtx); 2174 2175 return(0); 2176 } 2177 2178 /* 2179 * Initialize the transmit descriptors. 2180 */ 2181 static int dc_list_tx_init(sc) 2182 struct dc_softc *sc; 2183 { 2184 struct dc_chain_data *cd; 2185 struct dc_list_data *ld; 2186 int i; 2187 2188 cd = &sc->dc_cdata; 2189 ld = sc->dc_ldata; 2190 for (i = 0; i < DC_TX_LIST_CNT; i++) { 2191 if (i == (DC_TX_LIST_CNT - 1)) { 2192 ld->dc_tx_list[i].dc_next = 2193 vtophys(&ld->dc_tx_list[0]); 2194 } else { 2195 ld->dc_tx_list[i].dc_next = 2196 vtophys(&ld->dc_tx_list[i + 1]); 2197 } 2198 cd->dc_tx_chain[i] = NULL; 2199 ld->dc_tx_list[i].dc_data = 0; 2200 ld->dc_tx_list[i].dc_ctl = 0; 2201 } 2202 2203 cd->dc_tx_prod = cd->dc_tx_cons = cd->dc_tx_cnt = 0; 2204 2205 return(0); 2206 } 2207 2208 2209 /* 2210 * Initialize the RX descriptors and allocate mbufs for them. Note that 2211 * we arrange the descriptors in a closed ring, so that the last descriptor 2212 * points back to the first. 2213 */ 2214 static int dc_list_rx_init(sc) 2215 struct dc_softc *sc; 2216 { 2217 struct dc_chain_data *cd; 2218 struct dc_list_data *ld; 2219 int i; 2220 2221 cd = &sc->dc_cdata; 2222 ld = sc->dc_ldata; 2223 2224 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2225 if (dc_newbuf(sc, i, NULL) == ENOBUFS) 2226 return(ENOBUFS); 2227 if (i == (DC_RX_LIST_CNT - 1)) { 2228 ld->dc_rx_list[i].dc_next = 2229 vtophys(&ld->dc_rx_list[0]); 2230 } else { 2231 ld->dc_rx_list[i].dc_next = 2232 vtophys(&ld->dc_rx_list[i + 1]); 2233 } 2234 } 2235 2236 cd->dc_rx_prod = 0; 2237 2238 return(0); 2239 } 2240 2241 /* 2242 * Initialize an RX descriptor and attach an MBUF cluster. 2243 */ 2244 static int dc_newbuf(sc, i, m) 2245 struct dc_softc *sc; 2246 int i; 2247 struct mbuf *m; 2248 { 2249 struct mbuf *m_new = NULL; 2250 struct dc_desc *c; 2251 2252 c = &sc->dc_ldata->dc_rx_list[i]; 2253 2254 if (m == NULL) { 2255 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 2256 if (m_new == NULL) { 2257 printf("dc%d: no memory for rx list " 2258 "-- packet dropped!\n", sc->dc_unit); 2259 return(ENOBUFS); 2260 } 2261 2262 MCLGET(m_new, M_DONTWAIT); 2263 if (!(m_new->m_flags & M_EXT)) { 2264 printf("dc%d: no memory for rx list " 2265 "-- packet dropped!\n", sc->dc_unit); 2266 m_freem(m_new); 2267 return(ENOBUFS); 2268 } 2269 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 2270 } else { 2271 m_new = m; 2272 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 2273 m_new->m_data = m_new->m_ext.ext_buf; 2274 } 2275 2276 m_adj(m_new, sizeof(u_int64_t)); 2277 2278 /* 2279 * If this is a PNIC chip, zero the buffer. This is part 2280 * of the workaround for the receive bug in the 82c168 and 2281 * 82c169 chips. 2282 */ 2283 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) 2284 bzero((char *)mtod(m_new, char *), m_new->m_len); 2285 2286 sc->dc_cdata.dc_rx_chain[i] = m_new; 2287 c->dc_data = vtophys(mtod(m_new, caddr_t)); 2288 c->dc_ctl = DC_RXCTL_RLINK | DC_RXLEN; 2289 c->dc_status = DC_RXSTAT_OWN; 2290 2291 return(0); 2292 } 2293 2294 /* 2295 * Grrrrr. 2296 * The PNIC chip has a terrible bug in it that manifests itself during 2297 * periods of heavy activity. The exact mode of failure if difficult to 2298 * pinpoint: sometimes it only happens in promiscuous mode, sometimes it 2299 * will happen on slow machines. The bug is that sometimes instead of 2300 * uploading one complete frame during reception, it uploads what looks 2301 * like the entire contents of its FIFO memory. The frame we want is at 2302 * the end of the whole mess, but we never know exactly how much data has 2303 * been uploaded, so salvaging the frame is hard. 2304 * 2305 * There is only one way to do it reliably, and it's disgusting. 2306 * Here's what we know: 2307 * 2308 * - We know there will always be somewhere between one and three extra 2309 * descriptors uploaded. 2310 * 2311 * - We know the desired received frame will always be at the end of the 2312 * total data upload. 2313 * 2314 * - We know the size of the desired received frame because it will be 2315 * provided in the length field of the status word in the last descriptor. 2316 * 2317 * Here's what we do: 2318 * 2319 * - When we allocate buffers for the receive ring, we bzero() them. 2320 * This means that we know that the buffer contents should be all 2321 * zeros, except for data uploaded by the chip. 2322 * 2323 * - We also force the PNIC chip to upload frames that include the 2324 * ethernet CRC at the end. 2325 * 2326 * - We gather all of the bogus frame data into a single buffer. 2327 * 2328 * - We then position a pointer at the end of this buffer and scan 2329 * backwards until we encounter the first non-zero byte of data. 2330 * This is the end of the received frame. We know we will encounter 2331 * some data at the end of the frame because the CRC will always be 2332 * there, so even if the sender transmits a packet of all zeros, 2333 * we won't be fooled. 2334 * 2335 * - We know the size of the actual received frame, so we subtract 2336 * that value from the current pointer location. This brings us 2337 * to the start of the actual received packet. 2338 * 2339 * - We copy this into an mbuf and pass it on, along with the actual 2340 * frame length. 2341 * 2342 * The performance hit is tremendous, but it beats dropping frames all 2343 * the time. 2344 */ 2345 2346 #define DC_WHOLEFRAME (DC_RXSTAT_FIRSTFRAG|DC_RXSTAT_LASTFRAG) 2347 static void dc_pnic_rx_bug_war(sc, idx) 2348 struct dc_softc *sc; 2349 int idx; 2350 { 2351 struct dc_desc *cur_rx; 2352 struct dc_desc *c = NULL; 2353 struct mbuf *m = NULL; 2354 unsigned char *ptr; 2355 int i, total_len; 2356 u_int32_t rxstat = 0; 2357 2358 i = sc->dc_pnic_rx_bug_save; 2359 cur_rx = &sc->dc_ldata->dc_rx_list[idx]; 2360 ptr = sc->dc_pnic_rx_buf; 2361 bzero(ptr, sizeof(DC_RXLEN * 5)); 2362 2363 /* Copy all the bytes from the bogus buffers. */ 2364 while (1) { 2365 c = &sc->dc_ldata->dc_rx_list[i]; 2366 rxstat = c->dc_status; 2367 m = sc->dc_cdata.dc_rx_chain[i]; 2368 bcopy(mtod(m, char *), ptr, DC_RXLEN); 2369 ptr += DC_RXLEN; 2370 /* If this is the last buffer, break out. */ 2371 if (i == idx || rxstat & DC_RXSTAT_LASTFRAG) 2372 break; 2373 dc_newbuf(sc, i, m); 2374 DC_INC(i, DC_RX_LIST_CNT); 2375 } 2376 2377 /* Find the length of the actual receive frame. */ 2378 total_len = DC_RXBYTES(rxstat); 2379 2380 /* Scan backwards until we hit a non-zero byte. */ 2381 while(*ptr == 0x00) 2382 ptr--; 2383 2384 /* Round off. */ 2385 if ((uintptr_t)(ptr) & 0x3) 2386 ptr -= 1; 2387 2388 /* Now find the start of the frame. */ 2389 ptr -= total_len; 2390 if (ptr < sc->dc_pnic_rx_buf) 2391 ptr = sc->dc_pnic_rx_buf; 2392 2393 /* 2394 * Now copy the salvaged frame to the last mbuf and fake up 2395 * the status word to make it look like a successful 2396 * frame reception. 2397 */ 2398 dc_newbuf(sc, i, m); 2399 bcopy(ptr, mtod(m, char *), total_len); 2400 cur_rx->dc_status = rxstat | DC_RXSTAT_FIRSTFRAG; 2401 2402 return; 2403 } 2404 2405 /* 2406 * This routine searches the RX ring for dirty descriptors in the 2407 * event that the rxeof routine falls out of sync with the chip's 2408 * current descriptor pointer. This may happen sometimes as a result 2409 * of a "no RX buffer available" condition that happens when the chip 2410 * consumes all of the RX buffers before the driver has a chance to 2411 * process the RX ring. This routine may need to be called more than 2412 * once to bring the driver back in sync with the chip, however we 2413 * should still be getting RX DONE interrupts to drive the search 2414 * for new packets in the RX ring, so we should catch up eventually. 2415 */ 2416 static int dc_rx_resync(sc) 2417 struct dc_softc *sc; 2418 { 2419 int i, pos; 2420 struct dc_desc *cur_rx; 2421 2422 pos = sc->dc_cdata.dc_rx_prod; 2423 2424 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2425 cur_rx = &sc->dc_ldata->dc_rx_list[pos]; 2426 if (!(cur_rx->dc_status & DC_RXSTAT_OWN)) 2427 break; 2428 DC_INC(pos, DC_RX_LIST_CNT); 2429 } 2430 2431 /* If the ring really is empty, then just return. */ 2432 if (i == DC_RX_LIST_CNT) 2433 return(0); 2434 2435 /* We've fallen behing the chip: catch it. */ 2436 sc->dc_cdata.dc_rx_prod = pos; 2437 2438 return(EAGAIN); 2439 } 2440 2441 /* 2442 * A frame has been uploaded: pass the resulting mbuf chain up to 2443 * the higher level protocols. 2444 */ 2445 static void dc_rxeof(sc) 2446 struct dc_softc *sc; 2447 { 2448 struct ether_header *eh; 2449 struct mbuf *m; 2450 struct ifnet *ifp; 2451 struct dc_desc *cur_rx; 2452 int i, total_len = 0; 2453 u_int32_t rxstat; 2454 2455 ifp = &sc->arpcom.ac_if; 2456 i = sc->dc_cdata.dc_rx_prod; 2457 2458 while(!(sc->dc_ldata->dc_rx_list[i].dc_status & DC_RXSTAT_OWN)) { 2459 struct mbuf *m0 = NULL; 2460 2461 cur_rx = &sc->dc_ldata->dc_rx_list[i]; 2462 rxstat = cur_rx->dc_status; 2463 m = sc->dc_cdata.dc_rx_chain[i]; 2464 total_len = DC_RXBYTES(rxstat); 2465 2466 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) { 2467 if ((rxstat & DC_WHOLEFRAME) != DC_WHOLEFRAME) { 2468 if (rxstat & DC_RXSTAT_FIRSTFRAG) 2469 sc->dc_pnic_rx_bug_save = i; 2470 if ((rxstat & DC_RXSTAT_LASTFRAG) == 0) { 2471 DC_INC(i, DC_RX_LIST_CNT); 2472 continue; 2473 } 2474 dc_pnic_rx_bug_war(sc, i); 2475 rxstat = cur_rx->dc_status; 2476 total_len = DC_RXBYTES(rxstat); 2477 } 2478 } 2479 2480 sc->dc_cdata.dc_rx_chain[i] = NULL; 2481 2482 /* 2483 * If an error occurs, update stats, clear the 2484 * status word and leave the mbuf cluster in place: 2485 * it should simply get re-used next time this descriptor 2486 * comes up in the ring. 2487 */ 2488 if (rxstat & DC_RXSTAT_RXERR) { 2489 ifp->if_ierrors++; 2490 if (rxstat & DC_RXSTAT_COLLSEEN) 2491 ifp->if_collisions++; 2492 dc_newbuf(sc, i, m); 2493 if (rxstat & DC_RXSTAT_CRCERR) { 2494 DC_INC(i, DC_RX_LIST_CNT); 2495 continue; 2496 } else { 2497 dc_init(sc); 2498 return; 2499 } 2500 } 2501 2502 /* No errors; receive the packet. */ 2503 total_len -= ETHER_CRC_LEN; 2504 2505 m0 = m_devget(mtod(m, char *), total_len, ETHER_ALIGN, ifp, 2506 NULL); 2507 dc_newbuf(sc, i, m); 2508 DC_INC(i, DC_RX_LIST_CNT); 2509 if (m0 == NULL) { 2510 ifp->if_ierrors++; 2511 continue; 2512 } 2513 m = m0; 2514 2515 ifp->if_ipackets++; 2516 eh = mtod(m, struct ether_header *); 2517 2518 /* Remove header from mbuf and pass it on. */ 2519 m_adj(m, sizeof(struct ether_header)); 2520 ether_input(ifp, eh, m); 2521 } 2522 2523 sc->dc_cdata.dc_rx_prod = i; 2524 } 2525 2526 /* 2527 * A frame was downloaded to the chip. It's safe for us to clean up 2528 * the list buffers. 2529 */ 2530 2531 static void dc_txeof(sc) 2532 struct dc_softc *sc; 2533 { 2534 struct dc_desc *cur_tx = NULL; 2535 struct ifnet *ifp; 2536 int idx; 2537 2538 ifp = &sc->arpcom.ac_if; 2539 2540 /* Clear the timeout timer. */ 2541 ifp->if_timer = 0; 2542 2543 /* 2544 * Go through our tx list and free mbufs for those 2545 * frames that have been transmitted. 2546 */ 2547 idx = sc->dc_cdata.dc_tx_cons; 2548 while(idx != sc->dc_cdata.dc_tx_prod) { 2549 u_int32_t txstat; 2550 2551 cur_tx = &sc->dc_ldata->dc_tx_list[idx]; 2552 txstat = cur_tx->dc_status; 2553 2554 if (txstat & DC_TXSTAT_OWN) 2555 break; 2556 2557 if (!(cur_tx->dc_ctl & DC_TXCTL_LASTFRAG) || 2558 cur_tx->dc_ctl & DC_TXCTL_SETUP) { 2559 sc->dc_cdata.dc_tx_cnt--; 2560 if (cur_tx->dc_ctl & DC_TXCTL_SETUP) { 2561 /* 2562 * Yes, the PNIC is so brain damaged 2563 * that it will sometimes generate a TX 2564 * underrun error while DMAing the RX 2565 * filter setup frame. If we detect this, 2566 * we have to send the setup frame again, 2567 * or else the filter won't be programmed 2568 * correctly. 2569 */ 2570 if (DC_IS_PNIC(sc)) { 2571 if (txstat & DC_TXSTAT_ERRSUM) 2572 dc_setfilt(sc); 2573 } 2574 sc->dc_cdata.dc_tx_chain[idx] = NULL; 2575 } 2576 DC_INC(idx, DC_TX_LIST_CNT); 2577 continue; 2578 } 2579 2580 if (DC_IS_XIRCOM(sc)) { 2581 /* 2582 * XXX: Why does my Xircom taunt me so? 2583 * For some reason it likes setting the CARRLOST flag 2584 * even when the carrier is there. wtf?!? */ 2585 if (/*sc->dc_type == DC_TYPE_21143 &&*/ 2586 sc->dc_pmode == DC_PMODE_MII && 2587 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM| 2588 DC_TXSTAT_NOCARRIER))) 2589 txstat &= ~DC_TXSTAT_ERRSUM; 2590 } else { 2591 if (/*sc->dc_type == DC_TYPE_21143 &&*/ 2592 sc->dc_pmode == DC_PMODE_MII && 2593 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM| 2594 DC_TXSTAT_NOCARRIER|DC_TXSTAT_CARRLOST))) 2595 txstat &= ~DC_TXSTAT_ERRSUM; 2596 } 2597 2598 if (txstat & DC_TXSTAT_ERRSUM) { 2599 ifp->if_oerrors++; 2600 if (txstat & DC_TXSTAT_EXCESSCOLL) 2601 ifp->if_collisions++; 2602 if (txstat & DC_TXSTAT_LATECOLL) 2603 ifp->if_collisions++; 2604 if (!(txstat & DC_TXSTAT_UNDERRUN)) { 2605 dc_init(sc); 2606 return; 2607 } 2608 } 2609 2610 ifp->if_collisions += (txstat & DC_TXSTAT_COLLCNT) >> 3; 2611 2612 ifp->if_opackets++; 2613 if (sc->dc_cdata.dc_tx_chain[idx] != NULL) { 2614 m_freem(sc->dc_cdata.dc_tx_chain[idx]); 2615 sc->dc_cdata.dc_tx_chain[idx] = NULL; 2616 } 2617 2618 sc->dc_cdata.dc_tx_cnt--; 2619 DC_INC(idx, DC_TX_LIST_CNT); 2620 } 2621 2622 sc->dc_cdata.dc_tx_cons = idx; 2623 if (cur_tx != NULL) 2624 ifp->if_flags &= ~IFF_OACTIVE; 2625 2626 return; 2627 } 2628 2629 static void dc_tick(xsc) 2630 void *xsc; 2631 { 2632 struct dc_softc *sc; 2633 struct mii_data *mii; 2634 struct ifnet *ifp; 2635 u_int32_t r; 2636 2637 sc = xsc; 2638 DC_LOCK(sc); 2639 ifp = &sc->arpcom.ac_if; 2640 mii = device_get_softc(sc->dc_miibus); 2641 2642 if (sc->dc_flags & DC_REDUCED_MII_POLL) { 2643 if (sc->dc_flags & DC_21143_NWAY) { 2644 r = CSR_READ_4(sc, DC_10BTSTAT); 2645 if (IFM_SUBTYPE(mii->mii_media_active) == 2646 IFM_100_TX && (r & DC_TSTAT_LS100)) { 2647 sc->dc_link = 0; 2648 mii_mediachg(mii); 2649 } 2650 if (IFM_SUBTYPE(mii->mii_media_active) == 2651 IFM_10_T && (r & DC_TSTAT_LS10)) { 2652 sc->dc_link = 0; 2653 mii_mediachg(mii); 2654 } 2655 if (sc->dc_link == 0) 2656 mii_tick(mii); 2657 } else { 2658 r = CSR_READ_4(sc, DC_ISR); 2659 if ((r & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT && 2660 sc->dc_cdata.dc_tx_cnt == 0) 2661 mii_tick(mii); 2662 if (!(mii->mii_media_status & IFM_ACTIVE)) 2663 sc->dc_link = 0; 2664 } 2665 } else 2666 mii_tick(mii); 2667 2668 /* 2669 * When the init routine completes, we expect to be able to send 2670 * packets right away, and in fact the network code will send a 2671 * gratuitous ARP the moment the init routine marks the interface 2672 * as running. However, even though the MAC may have been initialized, 2673 * there may be a delay of a few seconds before the PHY completes 2674 * autonegotiation and the link is brought up. Any transmissions 2675 * made during that delay will be lost. Dealing with this is tricky: 2676 * we can't just pause in the init routine while waiting for the 2677 * PHY to come ready since that would bring the whole system to 2678 * a screeching halt for several seconds. 2679 * 2680 * What we do here is prevent the TX start routine from sending 2681 * any packets until a link has been established. After the 2682 * interface has been initialized, the tick routine will poll 2683 * the state of the PHY until the IFM_ACTIVE flag is set. Until 2684 * that time, packets will stay in the send queue, and once the 2685 * link comes up, they will be flushed out to the wire. 2686 */ 2687 if (!sc->dc_link) { 2688 mii_pollstat(mii); 2689 if (mii->mii_media_status & IFM_ACTIVE && 2690 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 2691 sc->dc_link++; 2692 if (ifp->if_snd.ifq_head != NULL) 2693 dc_start(ifp); 2694 } 2695 } 2696 2697 if (sc->dc_flags & DC_21143_NWAY && !sc->dc_link) 2698 callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc); 2699 else 2700 callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc); 2701 2702 DC_UNLOCK(sc); 2703 2704 return; 2705 } 2706 2707 /* 2708 * A transmit underrun has occurred. Back off the transmit threshold, 2709 * or switch to store and forward mode if we have to. 2710 */ 2711 static void dc_tx_underrun(sc) 2712 struct dc_softc *sc; 2713 { 2714 u_int32_t isr; 2715 int i; 2716 2717 if (DC_IS_DAVICOM(sc)) 2718 dc_init(sc); 2719 2720 if (DC_IS_INTEL(sc)) { 2721 /* 2722 * The real 21143 requires that the transmitter be idle 2723 * in order to change the transmit threshold or store 2724 * and forward state. 2725 */ 2726 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 2727 2728 for (i = 0; i < DC_TIMEOUT; i++) { 2729 isr = CSR_READ_4(sc, DC_ISR); 2730 if (isr & DC_ISR_TX_IDLE) 2731 break; 2732 DELAY(10); 2733 } 2734 if (i == DC_TIMEOUT) { 2735 printf("dc%d: failed to force tx to idle state\n", 2736 sc->dc_unit); 2737 dc_init(sc); 2738 } 2739 } 2740 2741 printf("dc%d: TX underrun -- ", sc->dc_unit); 2742 sc->dc_txthresh += DC_TXTHRESH_INC; 2743 if (sc->dc_txthresh > DC_TXTHRESH_MAX) { 2744 printf("using store and forward mode\n"); 2745 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 2746 } else { 2747 printf("increasing TX threshold\n"); 2748 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); 2749 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); 2750 } 2751 2752 if (DC_IS_INTEL(sc)) 2753 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 2754 2755 return; 2756 } 2757 2758 static void dc_intr(arg) 2759 void *arg; 2760 { 2761 struct dc_softc *sc; 2762 struct ifnet *ifp; 2763 u_int32_t status; 2764 2765 sc = arg; 2766 2767 if ( (CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0) 2768 return ; 2769 2770 DC_LOCK(sc); 2771 ifp = &sc->arpcom.ac_if; 2772 2773 /* Suppress unwanted interrupts */ 2774 if (!(ifp->if_flags & IFF_UP)) { 2775 if (CSR_READ_4(sc, DC_ISR) & DC_INTRS) 2776 dc_stop(sc); 2777 DC_UNLOCK(sc); 2778 return; 2779 } 2780 2781 /* Disable interrupts. */ 2782 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 2783 2784 while(((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) 2785 && status != 0xFFFFFFFF) { 2786 2787 CSR_WRITE_4(sc, DC_ISR, status); 2788 2789 if (status & DC_ISR_RX_OK) { 2790 int curpkts; 2791 curpkts = ifp->if_ipackets; 2792 dc_rxeof(sc); 2793 if (curpkts == ifp->if_ipackets) { 2794 while(dc_rx_resync(sc)) 2795 dc_rxeof(sc); 2796 } 2797 } 2798 2799 if (status & (DC_ISR_TX_OK|DC_ISR_TX_NOBUF)) 2800 dc_txeof(sc); 2801 2802 if (status & DC_ISR_TX_IDLE) { 2803 dc_txeof(sc); 2804 if (sc->dc_cdata.dc_tx_cnt) { 2805 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 2806 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 2807 } 2808 } 2809 2810 if (status & DC_ISR_TX_UNDERRUN) 2811 dc_tx_underrun(sc); 2812 2813 if ((status & DC_ISR_RX_WATDOGTIMEO) 2814 || (status & DC_ISR_RX_NOBUF)) { 2815 int curpkts; 2816 curpkts = ifp->if_ipackets; 2817 dc_rxeof(sc); 2818 if (curpkts == ifp->if_ipackets) { 2819 while(dc_rx_resync(sc)) 2820 dc_rxeof(sc); 2821 } 2822 } 2823 2824 if (status & DC_ISR_BUS_ERR) { 2825 dc_reset(sc); 2826 dc_init(sc); 2827 } 2828 } 2829 2830 /* Re-enable interrupts. */ 2831 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 2832 2833 if (ifp->if_snd.ifq_head != NULL) 2834 dc_start(ifp); 2835 2836 DC_UNLOCK(sc); 2837 2838 return; 2839 } 2840 2841 /* 2842 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 2843 * pointers to the fragment pointers. 2844 */ 2845 static int dc_encap(sc, m_head, txidx) 2846 struct dc_softc *sc; 2847 struct mbuf *m_head; 2848 u_int32_t *txidx; 2849 { 2850 struct dc_desc *f = NULL; 2851 struct mbuf *m; 2852 int frag, cur, cnt = 0; 2853 2854 /* 2855 * Start packing the mbufs in this chain into 2856 * the fragment pointers. Stop when we run out 2857 * of fragments or hit the end of the mbuf chain. 2858 */ 2859 m = m_head; 2860 cur = frag = *txidx; 2861 2862 for (m = m_head; m != NULL; m = m->m_next) { 2863 if (m->m_len != 0) { 2864 if (sc->dc_flags & DC_TX_ADMTEK_WAR) { 2865 if (*txidx != sc->dc_cdata.dc_tx_prod && 2866 frag == (DC_TX_LIST_CNT - 1)) 2867 return(ENOBUFS); 2868 } 2869 if ((DC_TX_LIST_CNT - 2870 (sc->dc_cdata.dc_tx_cnt + cnt)) < 5) 2871 return(ENOBUFS); 2872 2873 f = &sc->dc_ldata->dc_tx_list[frag]; 2874 f->dc_ctl = DC_TXCTL_TLINK | m->m_len; 2875 if (cnt == 0) { 2876 f->dc_status = 0; 2877 f->dc_ctl |= DC_TXCTL_FIRSTFRAG; 2878 } else 2879 f->dc_status = DC_TXSTAT_OWN; 2880 f->dc_data = vtophys(mtod(m, vm_offset_t)); 2881 cur = frag; 2882 DC_INC(frag, DC_TX_LIST_CNT); 2883 cnt++; 2884 } 2885 } 2886 2887 if (m != NULL) 2888 return(ENOBUFS); 2889 2890 sc->dc_cdata.dc_tx_cnt += cnt; 2891 sc->dc_cdata.dc_tx_chain[cur] = m_head; 2892 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_LASTFRAG; 2893 if (sc->dc_flags & DC_TX_INTR_FIRSTFRAG) 2894 sc->dc_ldata->dc_tx_list[*txidx].dc_ctl |= DC_TXCTL_FINT; 2895 if (sc->dc_flags & DC_TX_INTR_ALWAYS) 2896 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_FINT; 2897 if (sc->dc_flags & DC_TX_USE_TX_INTR && sc->dc_cdata.dc_tx_cnt > 64) 2898 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_FINT; 2899 sc->dc_ldata->dc_tx_list[*txidx].dc_status = DC_TXSTAT_OWN; 2900 *txidx = frag; 2901 2902 return(0); 2903 } 2904 2905 /* 2906 * Coalesce an mbuf chain into a single mbuf cluster buffer. 2907 * Needed for some really badly behaved chips that just can't 2908 * do scatter/gather correctly. 2909 */ 2910 static int dc_coal(sc, m_head) 2911 struct dc_softc *sc; 2912 struct mbuf **m_head; 2913 { 2914 struct mbuf *m_new, *m; 2915 2916 m = *m_head; 2917 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 2918 if (m_new == NULL) { 2919 printf("dc%d: no memory for tx list", sc->dc_unit); 2920 return(ENOBUFS); 2921 } 2922 if (m->m_pkthdr.len > MHLEN) { 2923 MCLGET(m_new, M_DONTWAIT); 2924 if (!(m_new->m_flags & M_EXT)) { 2925 m_freem(m_new); 2926 printf("dc%d: no memory for tx list", sc->dc_unit); 2927 return(ENOBUFS); 2928 } 2929 } 2930 m_copydata(m, 0, m->m_pkthdr.len, mtod(m_new, caddr_t)); 2931 m_new->m_pkthdr.len = m_new->m_len = m->m_pkthdr.len; 2932 m_freem(m); 2933 *m_head = m_new; 2934 2935 return(0); 2936 } 2937 2938 /* 2939 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 2940 * to the mbuf data regions directly in the transmit lists. We also save a 2941 * copy of the pointers since the transmit list fragment pointers are 2942 * physical addresses. 2943 */ 2944 2945 static void dc_start(ifp) 2946 struct ifnet *ifp; 2947 { 2948 struct dc_softc *sc; 2949 struct mbuf *m_head = NULL; 2950 int idx; 2951 2952 sc = ifp->if_softc; 2953 2954 DC_LOCK(sc); 2955 2956 if (!sc->dc_link) { 2957 DC_UNLOCK(sc); 2958 return; 2959 } 2960 2961 if (ifp->if_flags & IFF_OACTIVE) { 2962 DC_UNLOCK(sc); 2963 return; 2964 } 2965 2966 idx = sc->dc_cdata.dc_tx_prod; 2967 2968 while(sc->dc_cdata.dc_tx_chain[idx] == NULL) { 2969 IF_DEQUEUE(&ifp->if_snd, m_head); 2970 if (m_head == NULL) 2971 break; 2972 2973 if (sc->dc_flags & DC_TX_COALESCE) { 2974 if (dc_coal(sc, &m_head)) { 2975 IF_PREPEND(&ifp->if_snd, m_head); 2976 ifp->if_flags |= IFF_OACTIVE; 2977 break; 2978 } 2979 } 2980 2981 if (dc_encap(sc, m_head, &idx)) { 2982 IF_PREPEND(&ifp->if_snd, m_head); 2983 ifp->if_flags |= IFF_OACTIVE; 2984 break; 2985 } 2986 2987 /* 2988 * If there's a BPF listener, bounce a copy of this frame 2989 * to him. 2990 */ 2991 if (ifp->if_bpf) 2992 bpf_mtap(ifp, m_head); 2993 2994 if (sc->dc_flags & DC_TX_ONE) { 2995 ifp->if_flags |= IFF_OACTIVE; 2996 break; 2997 } 2998 } 2999 3000 /* Transmit */ 3001 sc->dc_cdata.dc_tx_prod = idx; 3002 if (!(sc->dc_flags & DC_TX_POLL)) 3003 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3004 3005 /* 3006 * Set a timeout in case the chip goes out to lunch. 3007 */ 3008 ifp->if_timer = 5; 3009 3010 DC_UNLOCK(sc); 3011 3012 return; 3013 } 3014 3015 static void dc_init(xsc) 3016 void *xsc; 3017 { 3018 struct dc_softc *sc = xsc; 3019 struct ifnet *ifp = &sc->arpcom.ac_if; 3020 struct mii_data *mii; 3021 3022 DC_LOCK(sc); 3023 3024 mii = device_get_softc(sc->dc_miibus); 3025 3026 /* 3027 * Cancel pending I/O and free all RX/TX buffers. 3028 */ 3029 dc_stop(sc); 3030 dc_reset(sc); 3031 3032 /* 3033 * Set cache alignment and burst length. 3034 */ 3035 if (DC_IS_ASIX(sc) || DC_IS_DAVICOM(sc)) 3036 CSR_WRITE_4(sc, DC_BUSCTL, 0); 3037 else 3038 CSR_WRITE_4(sc, DC_BUSCTL, DC_BUSCTL_MRME|DC_BUSCTL_MRLE); 3039 if (DC_IS_DAVICOM(sc) || DC_IS_INTEL(sc)) { 3040 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_USECA); 3041 } else { 3042 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_16LONG); 3043 } 3044 if (sc->dc_flags & DC_TX_POLL) 3045 DC_SETBIT(sc, DC_BUSCTL, DC_TXPOLL_1); 3046 switch(sc->dc_cachesize) { 3047 case 32: 3048 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_32LONG); 3049 break; 3050 case 16: 3051 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_16LONG); 3052 break; 3053 case 8: 3054 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_8LONG); 3055 break; 3056 case 0: 3057 default: 3058 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_NONE); 3059 break; 3060 } 3061 3062 if (sc->dc_flags & DC_TX_STORENFWD) 3063 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3064 else { 3065 if (sc->dc_txthresh > DC_TXTHRESH_MAX) { 3066 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3067 } else { 3068 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3069 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); 3070 } 3071 } 3072 3073 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_NO_RXCRC); 3074 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_BACKOFF); 3075 3076 if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 3077 /* 3078 * The app notes for the 98713 and 98715A say that 3079 * in order to have the chips operate properly, a magic 3080 * number must be written to CSR16. Macronix does not 3081 * document the meaning of these bits so there's no way 3082 * to know exactly what they do. The 98713 has a magic 3083 * number all its own; the rest all use a different one. 3084 */ 3085 DC_CLRBIT(sc, DC_MX_MAGICPACKET, 0xFFFF0000); 3086 if (sc->dc_type == DC_TYPE_98713) 3087 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98713); 3088 else 3089 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98715); 3090 } 3091 3092 if (DC_IS_XIRCOM(sc)) { 3093 /* 3094 * setup General Purpose Port mode and data so the tulip 3095 * can talk to the MII. 3096 */ 3097 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN | 3098 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 3099 DELAY(10); 3100 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN | 3101 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 3102 DELAY(10); 3103 } 3104 3105 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); 3106 DC_SETBIT(sc, DC_NETCFG, DC_TXTHRESH_MIN); 3107 3108 /* Init circular RX list. */ 3109 if (dc_list_rx_init(sc) == ENOBUFS) { 3110 printf("dc%d: initialization failed: no " 3111 "memory for rx buffers\n", sc->dc_unit); 3112 dc_stop(sc); 3113 DC_UNLOCK(sc); 3114 return; 3115 } 3116 3117 /* 3118 * Init tx descriptors. 3119 */ 3120 dc_list_tx_init(sc); 3121 3122 /* 3123 * Load the address of the RX list. 3124 */ 3125 CSR_WRITE_4(sc, DC_RXADDR, vtophys(&sc->dc_ldata->dc_rx_list[0])); 3126 CSR_WRITE_4(sc, DC_TXADDR, vtophys(&sc->dc_ldata->dc_tx_list[0])); 3127 3128 /* 3129 * Enable interrupts. 3130 */ 3131 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3132 CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF); 3133 3134 /* Enable transmitter. */ 3135 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3136 3137 /* 3138 * If this is an Intel 21143 and we're not using the 3139 * MII port, program the LED control pins so we get 3140 * link and activity indications. 3141 */ 3142 if (sc->dc_flags & DC_TULIP_LEDS) { 3143 CSR_WRITE_4(sc, DC_WATCHDOG, 3144 DC_WDOG_CTLWREN|DC_WDOG_LINK|DC_WDOG_ACTIVITY); 3145 CSR_WRITE_4(sc, DC_WATCHDOG, 0); 3146 } 3147 3148 /* 3149 * Load the RX/multicast filter. We do this sort of late 3150 * because the filter programming scheme on the 21143 and 3151 * some clones requires DMAing a setup frame via the TX 3152 * engine, and we need the transmitter enabled for that. 3153 */ 3154 dc_setfilt(sc); 3155 3156 /* Enable receiver. */ 3157 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); 3158 CSR_WRITE_4(sc, DC_RXSTART, 0xFFFFFFFF); 3159 3160 mii_mediachg(mii); 3161 dc_setcfg(sc, sc->dc_if_media); 3162 3163 ifp->if_flags |= IFF_RUNNING; 3164 ifp->if_flags &= ~IFF_OACTIVE; 3165 3166 /* Don't start the ticker if this is a homePNA link. */ 3167 if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_homePNA) 3168 sc->dc_link = 1; 3169 else { 3170 if (sc->dc_flags & DC_21143_NWAY) 3171 callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc); 3172 else 3173 callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc); 3174 } 3175 3176 #ifdef SRM_MEDIA 3177 if(sc->dc_srm_media) { 3178 struct ifreq ifr; 3179 3180 ifr.ifr_media = sc->dc_srm_media; 3181 ifmedia_ioctl(ifp, &ifr, &mii->mii_media, SIOCSIFMEDIA); 3182 sc->dc_srm_media = 0; 3183 } 3184 #endif 3185 DC_UNLOCK(sc); 3186 return; 3187 } 3188 3189 /* 3190 * Set media options. 3191 */ 3192 static int dc_ifmedia_upd(ifp) 3193 struct ifnet *ifp; 3194 { 3195 struct dc_softc *sc; 3196 struct mii_data *mii; 3197 struct ifmedia *ifm; 3198 3199 sc = ifp->if_softc; 3200 mii = device_get_softc(sc->dc_miibus); 3201 mii_mediachg(mii); 3202 ifm = &mii->mii_media; 3203 3204 if (DC_IS_DAVICOM(sc) && 3205 IFM_SUBTYPE(ifm->ifm_media) == IFM_homePNA) 3206 dc_setcfg(sc, ifm->ifm_media); 3207 else 3208 sc->dc_link = 0; 3209 3210 return(0); 3211 } 3212 3213 /* 3214 * Report current media status. 3215 */ 3216 static void dc_ifmedia_sts(ifp, ifmr) 3217 struct ifnet *ifp; 3218 struct ifmediareq *ifmr; 3219 { 3220 struct dc_softc *sc; 3221 struct mii_data *mii; 3222 struct ifmedia *ifm; 3223 3224 sc = ifp->if_softc; 3225 mii = device_get_softc(sc->dc_miibus); 3226 mii_pollstat(mii); 3227 ifm = &mii->mii_media; 3228 if (DC_IS_DAVICOM(sc)) { 3229 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_homePNA) { 3230 ifmr->ifm_active = ifm->ifm_media; 3231 ifmr->ifm_status = 0; 3232 return; 3233 } 3234 } 3235 ifmr->ifm_active = mii->mii_media_active; 3236 ifmr->ifm_status = mii->mii_media_status; 3237 3238 return; 3239 } 3240 3241 static int dc_ioctl(ifp, command, data) 3242 struct ifnet *ifp; 3243 u_long command; 3244 caddr_t data; 3245 { 3246 struct dc_softc *sc = ifp->if_softc; 3247 struct ifreq *ifr = (struct ifreq *) data; 3248 struct mii_data *mii; 3249 int error = 0; 3250 3251 DC_LOCK(sc); 3252 3253 switch(command) { 3254 case SIOCSIFADDR: 3255 case SIOCGIFADDR: 3256 case SIOCSIFMTU: 3257 error = ether_ioctl(ifp, command, data); 3258 break; 3259 case SIOCSIFFLAGS: 3260 if (ifp->if_flags & IFF_UP) { 3261 if (ifp->if_flags & IFF_RUNNING && 3262 ifp->if_flags & IFF_PROMISC && 3263 !(sc->dc_if_flags & IFF_PROMISC)) { 3264 dc_setfilt(sc); 3265 } else if (ifp->if_flags & IFF_RUNNING && 3266 !(ifp->if_flags & IFF_PROMISC) && 3267 sc->dc_if_flags & IFF_PROMISC) { 3268 dc_setfilt(sc); 3269 } else if (!(ifp->if_flags & IFF_RUNNING)) { 3270 sc->dc_txthresh = 0; 3271 dc_init(sc); 3272 } 3273 } else { 3274 if (ifp->if_flags & IFF_RUNNING) 3275 dc_stop(sc); 3276 } 3277 sc->dc_if_flags = ifp->if_flags; 3278 error = 0; 3279 break; 3280 case SIOCADDMULTI: 3281 case SIOCDELMULTI: 3282 dc_setfilt(sc); 3283 error = 0; 3284 break; 3285 case SIOCGIFMEDIA: 3286 case SIOCSIFMEDIA: 3287 mii = device_get_softc(sc->dc_miibus); 3288 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 3289 #ifdef SRM_MEDIA 3290 if (sc->dc_srm_media) 3291 sc->dc_srm_media = 0; 3292 #endif 3293 break; 3294 default: 3295 error = EINVAL; 3296 break; 3297 } 3298 3299 DC_UNLOCK(sc); 3300 3301 return(error); 3302 } 3303 3304 static void dc_watchdog(ifp) 3305 struct ifnet *ifp; 3306 { 3307 struct dc_softc *sc; 3308 3309 sc = ifp->if_softc; 3310 3311 DC_LOCK(sc); 3312 3313 ifp->if_oerrors++; 3314 printf("dc%d: watchdog timeout\n", sc->dc_unit); 3315 3316 dc_stop(sc); 3317 dc_reset(sc); 3318 dc_init(sc); 3319 3320 if (ifp->if_snd.ifq_head != NULL) 3321 dc_start(ifp); 3322 3323 DC_UNLOCK(sc); 3324 3325 return; 3326 } 3327 3328 /* 3329 * Stop the adapter and free any mbufs allocated to the 3330 * RX and TX lists. 3331 */ 3332 static void dc_stop(sc) 3333 struct dc_softc *sc; 3334 { 3335 register int i; 3336 struct ifnet *ifp; 3337 3338 DC_LOCK(sc); 3339 3340 ifp = &sc->arpcom.ac_if; 3341 ifp->if_timer = 0; 3342 3343 callout_stop(&sc->dc_stat_ch); 3344 3345 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON|DC_NETCFG_TX_ON)); 3346 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3347 CSR_WRITE_4(sc, DC_TXADDR, 0x00000000); 3348 CSR_WRITE_4(sc, DC_RXADDR, 0x00000000); 3349 sc->dc_link = 0; 3350 3351 /* 3352 * Free data in the RX lists. 3353 */ 3354 for (i = 0; i < DC_RX_LIST_CNT; i++) { 3355 if (sc->dc_cdata.dc_rx_chain[i] != NULL) { 3356 m_freem(sc->dc_cdata.dc_rx_chain[i]); 3357 sc->dc_cdata.dc_rx_chain[i] = NULL; 3358 } 3359 } 3360 bzero((char *)&sc->dc_ldata->dc_rx_list, 3361 sizeof(sc->dc_ldata->dc_rx_list)); 3362 3363 /* 3364 * Free the TX list buffers. 3365 */ 3366 for (i = 0; i < DC_TX_LIST_CNT; i++) { 3367 if (sc->dc_cdata.dc_tx_chain[i] != NULL) { 3368 if (sc->dc_ldata->dc_tx_list[i].dc_ctl & 3369 DC_TXCTL_SETUP) { 3370 sc->dc_cdata.dc_tx_chain[i] = NULL; 3371 continue; 3372 } 3373 m_freem(sc->dc_cdata.dc_tx_chain[i]); 3374 sc->dc_cdata.dc_tx_chain[i] = NULL; 3375 } 3376 } 3377 3378 bzero((char *)&sc->dc_ldata->dc_tx_list, 3379 sizeof(sc->dc_ldata->dc_tx_list)); 3380 3381 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3382 3383 DC_UNLOCK(sc); 3384 3385 return; 3386 } 3387 3388 /* 3389 * Stop all chip I/O so that the kernel's probe routines don't 3390 * get confused by errant DMAs when rebooting. 3391 */ 3392 static void dc_shutdown(dev) 3393 device_t dev; 3394 { 3395 struct dc_softc *sc; 3396 3397 sc = device_get_softc(dev); 3398 3399 dc_stop(sc); 3400 3401 return; 3402 } 3403