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 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 /* 37 * DEC "tulip" clone ethernet driver. Supports the DEC/Intel 21143 38 * series chips and several workalikes including the following: 39 * 40 * Macronix 98713/98715/98725/98727/98732 PMAC (www.macronix.com) 41 * Macronix/Lite-On 82c115 PNIC II (www.macronix.com) 42 * Lite-On 82c168/82c169 PNIC (www.litecom.com) 43 * ASIX Electronics AX88140A (www.asix.com.tw) 44 * ASIX Electronics AX88141 (www.asix.com.tw) 45 * ADMtek AL981 (www.admtek.com.tw) 46 * ADMtek AN985 (www.admtek.com.tw) 47 * Netgear FA511 (www.netgear.com) Appears to be rebadged ADMTek AN985 48 * Davicom DM9100, DM9102, DM9102A (www.davicom8.com) 49 * Accton EN1217 (www.accton.com) 50 * Xircom X3201 (www.xircom.com) 51 * Abocom FE2500 52 * Conexant LANfinity (www.conexant.com) 53 * 3Com OfficeConnect 10/100B 3CSOHO100B (www.3com.com) 54 * 55 * Datasheets for the 21143 are available at developer.intel.com. 56 * Datasheets for the clone parts can be found at their respective sites. 57 * (Except for the PNIC; see www.freebsd.org/~wpaul/PNIC/pnic.ps.gz.) 58 * The PNIC II is essentially a Macronix 98715A chip; the only difference 59 * worth noting is that its multicast hash table is only 128 bits wide 60 * instead of 512. 61 * 62 * Written by Bill Paul <wpaul@ee.columbia.edu> 63 * Electrical Engineering Department 64 * Columbia University, New York City 65 */ 66 /* 67 * The Intel 21143 is the successor to the DEC 21140. It is basically 68 * the same as the 21140 but with a few new features. The 21143 supports 69 * three kinds of media attachments: 70 * 71 * o MII port, for 10Mbps and 100Mbps support and NWAY 72 * autonegotiation provided by an external PHY. 73 * o SYM port, for symbol mode 100Mbps support. 74 * o 10baseT port. 75 * o AUI/BNC port. 76 * 77 * The 100Mbps SYM port and 10baseT port can be used together in 78 * combination with the internal NWAY support to create a 10/100 79 * autosensing configuration. 80 * 81 * Note that not all tulip workalikes are handled in this driver: we only 82 * deal with those which are relatively well behaved. The Winbond is 83 * handled separately due to its different register offsets and the 84 * special handling needed for its various bugs. The PNIC is handled 85 * here, but I'm not thrilled about it. 86 * 87 * All of the workalike chips use some form of MII transceiver support 88 * with the exception of the Macronix chips, which also have a SYM port. 89 * The ASIX AX88140A is also documented to have a SYM port, but all 90 * the cards I've seen use an MII transceiver, probably because the 91 * AX88140A doesn't support internal NWAY. 92 */ 93 94 #include <sys/param.h> 95 #include <sys/endian.h> 96 #include <sys/systm.h> 97 #include <sys/sockio.h> 98 #include <sys/mbuf.h> 99 #include <sys/malloc.h> 100 #include <sys/kernel.h> 101 #include <sys/module.h> 102 #include <sys/socket.h> 103 #include <sys/sysctl.h> 104 105 #include <net/if.h> 106 #include <net/if_arp.h> 107 #include <net/ethernet.h> 108 #include <net/if_dl.h> 109 #include <net/if_media.h> 110 #include <net/if_types.h> 111 #include <net/if_vlan_var.h> 112 113 #include <net/bpf.h> 114 115 #include <machine/bus.h> 116 #include <machine/resource.h> 117 #include <sys/bus.h> 118 #include <sys/rman.h> 119 120 #include <dev/mii/mii.h> 121 #include <dev/mii/miivar.h> 122 123 #include <dev/pci/pcireg.h> 124 #include <dev/pci/pcivar.h> 125 126 #define DC_USEIOSPACE 127 #ifdef __alpha__ 128 #define SRM_MEDIA 129 #endif 130 131 #include <pci/if_dcreg.h> 132 133 #ifdef __sparc64__ 134 #include <dev/ofw/openfirm.h> 135 #include <machine/ofw_machdep.h> 136 #endif 137 138 MODULE_DEPEND(dc, pci, 1, 1, 1); 139 MODULE_DEPEND(dc, ether, 1, 1, 1); 140 MODULE_DEPEND(dc, miibus, 1, 1, 1); 141 142 /* "controller miibus0" required. See GENERIC if you get errors here. */ 143 #include "miibus_if.h" 144 145 /* 146 * Various supported device vendors/types and their names. 147 */ 148 static struct dc_type dc_devs[] = { 149 { DC_VENDORID_DEC, DC_DEVICEID_21143, 150 "Intel 21143 10/100BaseTX" }, 151 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9009, 152 "Davicom DM9009 10/100BaseTX" }, 153 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100, 154 "Davicom DM9100 10/100BaseTX" }, 155 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102, 156 "Davicom DM9102 10/100BaseTX" }, 157 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102, 158 "Davicom DM9102A 10/100BaseTX" }, 159 { DC_VENDORID_ADMTEK, DC_DEVICEID_AL981, 160 "ADMtek AL981 10/100BaseTX" }, 161 { DC_VENDORID_ADMTEK, DC_DEVICEID_AN985, 162 "ADMtek AN985 10/100BaseTX" }, 163 { DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9511, 164 "ADMtek ADM9511 10/100BaseTX" }, 165 { DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9513, 166 "ADMtek ADM9513 10/100BaseTX" }, 167 { DC_VENDORID_ADMTEK, DC_DEVICEID_FA511, 168 "Netgear FA511 10/100BaseTX" }, 169 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A, 170 "ASIX AX88140A 10/100BaseTX" }, 171 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A, 172 "ASIX AX88141 10/100BaseTX" }, 173 { DC_VENDORID_MX, DC_DEVICEID_98713, 174 "Macronix 98713 10/100BaseTX" }, 175 { DC_VENDORID_MX, DC_DEVICEID_98713, 176 "Macronix 98713A 10/100BaseTX" }, 177 { DC_VENDORID_CP, DC_DEVICEID_98713_CP, 178 "Compex RL100-TX 10/100BaseTX" }, 179 { DC_VENDORID_CP, DC_DEVICEID_98713_CP, 180 "Compex RL100-TX 10/100BaseTX" }, 181 { DC_VENDORID_MX, DC_DEVICEID_987x5, 182 "Macronix 98715/98715A 10/100BaseTX" }, 183 { DC_VENDORID_MX, DC_DEVICEID_987x5, 184 "Macronix 98715AEC-C 10/100BaseTX" }, 185 { DC_VENDORID_MX, DC_DEVICEID_987x5, 186 "Macronix 98725 10/100BaseTX" }, 187 { DC_VENDORID_MX, DC_DEVICEID_98727, 188 "Macronix 98727/98732 10/100BaseTX" }, 189 { DC_VENDORID_LO, DC_DEVICEID_82C115, 190 "LC82C115 PNIC II 10/100BaseTX" }, 191 { DC_VENDORID_LO, DC_DEVICEID_82C168, 192 "82c168 PNIC 10/100BaseTX" }, 193 { DC_VENDORID_LO, DC_DEVICEID_82C168, 194 "82c169 PNIC 10/100BaseTX" }, 195 { DC_VENDORID_ACCTON, DC_DEVICEID_EN1217, 196 "Accton EN1217 10/100BaseTX" }, 197 { DC_VENDORID_ACCTON, DC_DEVICEID_EN2242, 198 "Accton EN2242 MiniPCI 10/100BaseTX" }, 199 { DC_VENDORID_XIRCOM, DC_DEVICEID_X3201, 200 "Xircom X3201 10/100BaseTX" }, 201 { DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500, 202 "Abocom FE2500 10/100BaseTX" }, 203 { DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500MX, 204 "Abocom FE2500MX 10/100BaseTX" }, 205 { DC_VENDORID_CONEXANT, DC_DEVICEID_RS7112, 206 "Conexant LANfinity MiniPCI 10/100BaseTX" }, 207 { DC_VENDORID_HAWKING, DC_DEVICEID_HAWKING_PN672TX, 208 "Hawking CB102 CardBus 10/100" }, 209 { DC_VENDORID_PLANEX, DC_DEVICEID_FNW3602T, 210 "PlaneX FNW-3602-T CardBus 10/100" }, 211 { DC_VENDORID_3COM, DC_DEVICEID_3CSOHOB, 212 "3Com OfficeConnect 10/100B" }, 213 { DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN120, 214 "Microsoft MN-120 CardBus 10/100" }, 215 { DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN130, 216 "Microsoft MN-130 10/100" }, 217 { DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN130_FAKE, 218 "Microsoft MN-130 10/100" }, 219 { 0, 0, NULL } 220 }; 221 222 static int dc_probe(device_t); 223 static int dc_attach(device_t); 224 static int dc_detach(device_t); 225 static int dc_suspend(device_t); 226 static int dc_resume(device_t); 227 static struct dc_type *dc_devtype(device_t); 228 static int dc_newbuf(struct dc_softc *, int, int); 229 static int dc_encap(struct dc_softc *, struct mbuf **); 230 static void dc_pnic_rx_bug_war(struct dc_softc *, int); 231 static int dc_rx_resync(struct dc_softc *); 232 static void dc_rxeof(struct dc_softc *); 233 static void dc_txeof(struct dc_softc *); 234 static void dc_tick(void *); 235 static void dc_tx_underrun(struct dc_softc *); 236 static void dc_intr(void *); 237 static void dc_start(struct ifnet *); 238 static int dc_ioctl(struct ifnet *, u_long, caddr_t); 239 static void dc_init(void *); 240 static void dc_stop(struct dc_softc *); 241 static void dc_watchdog(struct ifnet *); 242 static void dc_shutdown(device_t); 243 static int dc_ifmedia_upd(struct ifnet *); 244 static void dc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 245 246 static void dc_delay(struct dc_softc *); 247 static void dc_eeprom_idle(struct dc_softc *); 248 static void dc_eeprom_putbyte(struct dc_softc *, int); 249 static void dc_eeprom_getword(struct dc_softc *, int, u_int16_t *); 250 static void dc_eeprom_getword_pnic(struct dc_softc *, int, u_int16_t *); 251 static void dc_eeprom_getword_xircom(struct dc_softc *, int, u_int16_t *); 252 static void dc_eeprom_width(struct dc_softc *); 253 static void dc_read_eeprom(struct dc_softc *, caddr_t, int, int, int); 254 255 static void dc_mii_writebit(struct dc_softc *, int); 256 static int dc_mii_readbit(struct dc_softc *); 257 static void dc_mii_sync(struct dc_softc *); 258 static void dc_mii_send(struct dc_softc *, u_int32_t, int); 259 static int dc_mii_readreg(struct dc_softc *, struct dc_mii_frame *); 260 static int dc_mii_writereg(struct dc_softc *, struct dc_mii_frame *); 261 static int dc_miibus_readreg(device_t, int, int); 262 static int dc_miibus_writereg(device_t, int, int, int); 263 static void dc_miibus_statchg(device_t); 264 static void dc_miibus_mediainit(device_t); 265 266 static void dc_setcfg(struct dc_softc *, int); 267 static uint32_t dc_mchash_le(struct dc_softc *, const uint8_t *); 268 static uint32_t dc_mchash_be(const uint8_t *); 269 static void dc_setfilt_21143(struct dc_softc *); 270 static void dc_setfilt_asix(struct dc_softc *); 271 static void dc_setfilt_admtek(struct dc_softc *); 272 static void dc_setfilt_xircom(struct dc_softc *); 273 274 static void dc_setfilt(struct dc_softc *); 275 276 static void dc_reset(struct dc_softc *); 277 static int dc_list_rx_init(struct dc_softc *); 278 static int dc_list_tx_init(struct dc_softc *); 279 280 static void dc_read_srom(struct dc_softc *, int); 281 static void dc_parse_21143_srom(struct dc_softc *); 282 static void dc_decode_leaf_sia(struct dc_softc *, struct dc_eblock_sia *); 283 static void dc_decode_leaf_mii(struct dc_softc *, struct dc_eblock_mii *); 284 static void dc_decode_leaf_sym(struct dc_softc *, struct dc_eblock_sym *); 285 static void dc_apply_fixup(struct dc_softc *, int); 286 287 static void dc_dma_map_txbuf(void *, bus_dma_segment_t *, int, bus_size_t, int); 288 static void dc_dma_map_rxbuf(void *, bus_dma_segment_t *, int, bus_size_t, int); 289 290 #ifdef DC_USEIOSPACE 291 #define DC_RES SYS_RES_IOPORT 292 #define DC_RID DC_PCI_CFBIO 293 #else 294 #define DC_RES SYS_RES_MEMORY 295 #define DC_RID DC_PCI_CFBMA 296 #endif 297 298 static device_method_t dc_methods[] = { 299 /* Device interface */ 300 DEVMETHOD(device_probe, dc_probe), 301 DEVMETHOD(device_attach, dc_attach), 302 DEVMETHOD(device_detach, dc_detach), 303 DEVMETHOD(device_suspend, dc_suspend), 304 DEVMETHOD(device_resume, dc_resume), 305 DEVMETHOD(device_shutdown, dc_shutdown), 306 307 /* bus interface */ 308 DEVMETHOD(bus_print_child, bus_generic_print_child), 309 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 310 311 /* MII interface */ 312 DEVMETHOD(miibus_readreg, dc_miibus_readreg), 313 DEVMETHOD(miibus_writereg, dc_miibus_writereg), 314 DEVMETHOD(miibus_statchg, dc_miibus_statchg), 315 DEVMETHOD(miibus_mediainit, dc_miibus_mediainit), 316 317 { 0, 0 } 318 }; 319 320 static driver_t dc_driver = { 321 "dc", 322 dc_methods, 323 sizeof(struct dc_softc) 324 }; 325 326 static devclass_t dc_devclass; 327 #ifdef __i386__ 328 static int dc_quick = 1; 329 SYSCTL_INT(_hw, OID_AUTO, dc_quick, CTLFLAG_RW, &dc_quick, 0, 330 "do not m_devget() in dc driver"); 331 #endif 332 333 DRIVER_MODULE(dc, cardbus, dc_driver, dc_devclass, 0, 0); 334 DRIVER_MODULE(dc, pci, dc_driver, dc_devclass, 0, 0); 335 DRIVER_MODULE(miibus, dc, miibus_driver, miibus_devclass, 0, 0); 336 337 #define DC_SETBIT(sc, reg, x) \ 338 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x)) 339 340 #define DC_CLRBIT(sc, reg, x) \ 341 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x)) 342 343 #define SIO_SET(x) DC_SETBIT(sc, DC_SIO, (x)) 344 #define SIO_CLR(x) DC_CLRBIT(sc, DC_SIO, (x)) 345 346 #define IS_MPSAFE 0 347 348 static void 349 dc_delay(struct dc_softc *sc) 350 { 351 int idx; 352 353 for (idx = (300 / 33) + 1; idx > 0; idx--) 354 CSR_READ_4(sc, DC_BUSCTL); 355 } 356 357 static void 358 dc_eeprom_width(struct dc_softc *sc) 359 { 360 int i; 361 362 /* Force EEPROM to idle state. */ 363 dc_eeprom_idle(sc); 364 365 /* Enter EEPROM access mode. */ 366 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 367 dc_delay(sc); 368 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 369 dc_delay(sc); 370 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 371 dc_delay(sc); 372 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 373 dc_delay(sc); 374 375 for (i = 3; i--;) { 376 if (6 & (1 << i)) 377 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 378 else 379 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 380 dc_delay(sc); 381 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 382 dc_delay(sc); 383 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 384 dc_delay(sc); 385 } 386 387 for (i = 1; i <= 12; i++) { 388 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 389 dc_delay(sc); 390 if (!(CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)) { 391 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 392 dc_delay(sc); 393 break; 394 } 395 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 396 dc_delay(sc); 397 } 398 399 /* Turn off EEPROM access mode. */ 400 dc_eeprom_idle(sc); 401 402 if (i < 4 || i > 12) 403 sc->dc_romwidth = 6; 404 else 405 sc->dc_romwidth = i; 406 407 /* Enter EEPROM access mode. */ 408 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 409 dc_delay(sc); 410 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 411 dc_delay(sc); 412 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 413 dc_delay(sc); 414 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 415 dc_delay(sc); 416 417 /* Turn off EEPROM access mode. */ 418 dc_eeprom_idle(sc); 419 } 420 421 static void 422 dc_eeprom_idle(struct dc_softc *sc) 423 { 424 int i; 425 426 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 427 dc_delay(sc); 428 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 429 dc_delay(sc); 430 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 431 dc_delay(sc); 432 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 433 dc_delay(sc); 434 435 for (i = 0; i < 25; i++) { 436 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 437 dc_delay(sc); 438 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 439 dc_delay(sc); 440 } 441 442 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 443 dc_delay(sc); 444 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CS); 445 dc_delay(sc); 446 CSR_WRITE_4(sc, DC_SIO, 0x00000000); 447 } 448 449 /* 450 * Send a read command and address to the EEPROM, check for ACK. 451 */ 452 static void 453 dc_eeprom_putbyte(struct dc_softc *sc, int addr) 454 { 455 int d, i; 456 457 d = DC_EECMD_READ >> 6; 458 for (i = 3; i--; ) { 459 if (d & (1 << i)) 460 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 461 else 462 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 463 dc_delay(sc); 464 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 465 dc_delay(sc); 466 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 467 dc_delay(sc); 468 } 469 470 /* 471 * Feed in each bit and strobe the clock. 472 */ 473 for (i = sc->dc_romwidth; i--;) { 474 if (addr & (1 << i)) { 475 SIO_SET(DC_SIO_EE_DATAIN); 476 } else { 477 SIO_CLR(DC_SIO_EE_DATAIN); 478 } 479 dc_delay(sc); 480 SIO_SET(DC_SIO_EE_CLK); 481 dc_delay(sc); 482 SIO_CLR(DC_SIO_EE_CLK); 483 dc_delay(sc); 484 } 485 } 486 487 /* 488 * Read a word of data stored in the EEPROM at address 'addr.' 489 * The PNIC 82c168/82c169 has its own non-standard way to read 490 * the EEPROM. 491 */ 492 static void 493 dc_eeprom_getword_pnic(struct dc_softc *sc, int addr, u_int16_t *dest) 494 { 495 int i; 496 u_int32_t r; 497 498 CSR_WRITE_4(sc, DC_PN_SIOCTL, DC_PN_EEOPCODE_READ | addr); 499 500 for (i = 0; i < DC_TIMEOUT; i++) { 501 DELAY(1); 502 r = CSR_READ_4(sc, DC_SIO); 503 if (!(r & DC_PN_SIOCTL_BUSY)) { 504 *dest = (u_int16_t)(r & 0xFFFF); 505 return; 506 } 507 } 508 } 509 510 /* 511 * Read a word of data stored in the EEPROM at address 'addr.' 512 * The Xircom X3201 has its own non-standard way to read 513 * the EEPROM, too. 514 */ 515 static void 516 dc_eeprom_getword_xircom(struct dc_softc *sc, int addr, u_int16_t *dest) 517 { 518 519 SIO_SET(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ); 520 521 addr *= 2; 522 CSR_WRITE_4(sc, DC_ROM, addr | 0x160); 523 *dest = (u_int16_t)CSR_READ_4(sc, DC_SIO) & 0xff; 524 addr += 1; 525 CSR_WRITE_4(sc, DC_ROM, addr | 0x160); 526 *dest |= ((u_int16_t)CSR_READ_4(sc, DC_SIO) & 0xff) << 8; 527 528 SIO_CLR(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ); 529 } 530 531 /* 532 * Read a word of data stored in the EEPROM at address 'addr.' 533 */ 534 static void 535 dc_eeprom_getword(struct dc_softc *sc, int addr, u_int16_t *dest) 536 { 537 int i; 538 u_int16_t word = 0; 539 540 /* Force EEPROM to idle state. */ 541 dc_eeprom_idle(sc); 542 543 /* Enter EEPROM access mode. */ 544 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 545 dc_delay(sc); 546 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 547 dc_delay(sc); 548 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 549 dc_delay(sc); 550 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 551 dc_delay(sc); 552 553 /* 554 * Send address of word we want to read. 555 */ 556 dc_eeprom_putbyte(sc, addr); 557 558 /* 559 * Start reading bits from EEPROM. 560 */ 561 for (i = 0x8000; i; i >>= 1) { 562 SIO_SET(DC_SIO_EE_CLK); 563 dc_delay(sc); 564 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT) 565 word |= i; 566 dc_delay(sc); 567 SIO_CLR(DC_SIO_EE_CLK); 568 dc_delay(sc); 569 } 570 571 /* Turn off EEPROM access mode. */ 572 dc_eeprom_idle(sc); 573 574 *dest = word; 575 } 576 577 /* 578 * Read a sequence of words from the EEPROM. 579 */ 580 static void 581 dc_read_eeprom(struct dc_softc *sc, caddr_t dest, int off, int cnt, int be) 582 { 583 int i; 584 u_int16_t word = 0, *ptr; 585 586 for (i = 0; i < cnt; i++) { 587 if (DC_IS_PNIC(sc)) 588 dc_eeprom_getword_pnic(sc, off + i, &word); 589 else if (DC_IS_XIRCOM(sc)) 590 dc_eeprom_getword_xircom(sc, off + i, &word); 591 else 592 dc_eeprom_getword(sc, off + i, &word); 593 ptr = (u_int16_t *)(dest + (i * 2)); 594 if (be) 595 *ptr = be16toh(word); 596 else 597 *ptr = le16toh(word); 598 } 599 } 600 601 /* 602 * The following two routines are taken from the Macronix 98713 603 * Application Notes pp.19-21. 604 */ 605 /* 606 * Write a bit to the MII bus. 607 */ 608 static void 609 dc_mii_writebit(struct dc_softc *sc, int bit) 610 { 611 612 if (bit) 613 CSR_WRITE_4(sc, DC_SIO, 614 DC_SIO_ROMCTL_WRITE | DC_SIO_MII_DATAOUT); 615 else 616 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); 617 618 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); 619 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); 620 } 621 622 /* 623 * Read a bit from the MII bus. 624 */ 625 static int 626 dc_mii_readbit(struct dc_softc *sc) 627 { 628 629 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_READ | DC_SIO_MII_DIR); 630 CSR_READ_4(sc, DC_SIO); 631 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); 632 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); 633 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_MII_DATAIN) 634 return (1); 635 636 return (0); 637 } 638 639 /* 640 * Sync the PHYs by setting data bit and strobing the clock 32 times. 641 */ 642 static void 643 dc_mii_sync(struct dc_softc *sc) 644 { 645 int i; 646 647 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); 648 649 for (i = 0; i < 32; i++) 650 dc_mii_writebit(sc, 1); 651 } 652 653 /* 654 * Clock a series of bits through the MII. 655 */ 656 static void 657 dc_mii_send(struct dc_softc *sc, u_int32_t bits, int cnt) 658 { 659 int i; 660 661 for (i = (0x1 << (cnt - 1)); i; i >>= 1) 662 dc_mii_writebit(sc, bits & i); 663 } 664 665 /* 666 * Read an PHY register through the MII. 667 */ 668 static int 669 dc_mii_readreg(struct dc_softc *sc, struct dc_mii_frame *frame) 670 { 671 int i, ack; 672 673 DC_LOCK(sc); 674 675 /* 676 * Set up frame for RX. 677 */ 678 frame->mii_stdelim = DC_MII_STARTDELIM; 679 frame->mii_opcode = DC_MII_READOP; 680 frame->mii_turnaround = 0; 681 frame->mii_data = 0; 682 683 /* 684 * Sync the PHYs. 685 */ 686 dc_mii_sync(sc); 687 688 /* 689 * Send command/address info. 690 */ 691 dc_mii_send(sc, frame->mii_stdelim, 2); 692 dc_mii_send(sc, frame->mii_opcode, 2); 693 dc_mii_send(sc, frame->mii_phyaddr, 5); 694 dc_mii_send(sc, frame->mii_regaddr, 5); 695 696 #ifdef notdef 697 /* Idle bit */ 698 dc_mii_writebit(sc, 1); 699 dc_mii_writebit(sc, 0); 700 #endif 701 702 /* Check for ack. */ 703 ack = dc_mii_readbit(sc); 704 705 /* 706 * Now try reading data bits. If the ack failed, we still 707 * need to clock through 16 cycles to keep the PHY(s) in sync. 708 */ 709 if (ack) { 710 for (i = 0; i < 16; i++) 711 dc_mii_readbit(sc); 712 goto fail; 713 } 714 715 for (i = 0x8000; i; i >>= 1) { 716 if (!ack) { 717 if (dc_mii_readbit(sc)) 718 frame->mii_data |= i; 719 } 720 } 721 722 fail: 723 724 dc_mii_writebit(sc, 0); 725 dc_mii_writebit(sc, 0); 726 727 DC_UNLOCK(sc); 728 729 if (ack) 730 return (1); 731 return (0); 732 } 733 734 /* 735 * Write to a PHY register through the MII. 736 */ 737 static int 738 dc_mii_writereg(struct dc_softc *sc, struct dc_mii_frame *frame) 739 { 740 741 DC_LOCK(sc); 742 /* 743 * Set up frame for TX. 744 */ 745 746 frame->mii_stdelim = DC_MII_STARTDELIM; 747 frame->mii_opcode = DC_MII_WRITEOP; 748 frame->mii_turnaround = DC_MII_TURNAROUND; 749 750 /* 751 * Sync the PHYs. 752 */ 753 dc_mii_sync(sc); 754 755 dc_mii_send(sc, frame->mii_stdelim, 2); 756 dc_mii_send(sc, frame->mii_opcode, 2); 757 dc_mii_send(sc, frame->mii_phyaddr, 5); 758 dc_mii_send(sc, frame->mii_regaddr, 5); 759 dc_mii_send(sc, frame->mii_turnaround, 2); 760 dc_mii_send(sc, frame->mii_data, 16); 761 762 /* Idle bit. */ 763 dc_mii_writebit(sc, 0); 764 dc_mii_writebit(sc, 0); 765 766 DC_UNLOCK(sc); 767 768 return (0); 769 } 770 771 static int 772 dc_miibus_readreg(device_t dev, int phy, int reg) 773 { 774 struct dc_mii_frame frame; 775 struct dc_softc *sc; 776 int i, rval, phy_reg = 0; 777 778 sc = device_get_softc(dev); 779 bzero(&frame, sizeof(frame)); 780 781 /* 782 * Note: both the AL981 and AN985 have internal PHYs, 783 * however the AL981 provides direct access to the PHY 784 * registers while the AN985 uses a serial MII interface. 785 * The AN985's MII interface is also buggy in that you 786 * can read from any MII address (0 to 31), but only address 1 787 * behaves normally. To deal with both cases, we pretend 788 * that the PHY is at MII address 1. 789 */ 790 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) 791 return (0); 792 793 /* 794 * Note: the ukphy probes of the RS7112 report a PHY at 795 * MII address 0 (possibly HomePNA?) and 1 (ethernet) 796 * so we only respond to correct one. 797 */ 798 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR) 799 return (0); 800 801 if (sc->dc_pmode != DC_PMODE_MII) { 802 if (phy == (MII_NPHY - 1)) { 803 switch (reg) { 804 case MII_BMSR: 805 /* 806 * Fake something to make the probe 807 * code think there's a PHY here. 808 */ 809 return (BMSR_MEDIAMASK); 810 break; 811 case MII_PHYIDR1: 812 if (DC_IS_PNIC(sc)) 813 return (DC_VENDORID_LO); 814 return (DC_VENDORID_DEC); 815 break; 816 case MII_PHYIDR2: 817 if (DC_IS_PNIC(sc)) 818 return (DC_DEVICEID_82C168); 819 return (DC_DEVICEID_21143); 820 break; 821 default: 822 return (0); 823 break; 824 } 825 } else 826 return (0); 827 } 828 829 if (DC_IS_PNIC(sc)) { 830 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ | 831 (phy << 23) | (reg << 18)); 832 for (i = 0; i < DC_TIMEOUT; i++) { 833 DELAY(1); 834 rval = CSR_READ_4(sc, DC_PN_MII); 835 if (!(rval & DC_PN_MII_BUSY)) { 836 rval &= 0xFFFF; 837 return (rval == 0xFFFF ? 0 : rval); 838 } 839 } 840 return (0); 841 } 842 843 if (DC_IS_COMET(sc)) { 844 switch (reg) { 845 case MII_BMCR: 846 phy_reg = DC_AL_BMCR; 847 break; 848 case MII_BMSR: 849 phy_reg = DC_AL_BMSR; 850 break; 851 case MII_PHYIDR1: 852 phy_reg = DC_AL_VENID; 853 break; 854 case MII_PHYIDR2: 855 phy_reg = DC_AL_DEVID; 856 break; 857 case MII_ANAR: 858 phy_reg = DC_AL_ANAR; 859 break; 860 case MII_ANLPAR: 861 phy_reg = DC_AL_LPAR; 862 break; 863 case MII_ANER: 864 phy_reg = DC_AL_ANER; 865 break; 866 default: 867 printf("dc%d: phy_read: bad phy register %x\n", 868 sc->dc_unit, reg); 869 return (0); 870 break; 871 } 872 873 rval = CSR_READ_4(sc, phy_reg) & 0x0000FFFF; 874 875 if (rval == 0xFFFF) 876 return (0); 877 return (rval); 878 } 879 880 frame.mii_phyaddr = phy; 881 frame.mii_regaddr = reg; 882 if (sc->dc_type == DC_TYPE_98713) { 883 phy_reg = CSR_READ_4(sc, DC_NETCFG); 884 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); 885 } 886 dc_mii_readreg(sc, &frame); 887 if (sc->dc_type == DC_TYPE_98713) 888 CSR_WRITE_4(sc, DC_NETCFG, phy_reg); 889 890 return (frame.mii_data); 891 } 892 893 static int 894 dc_miibus_writereg(device_t dev, int phy, int reg, int data) 895 { 896 struct dc_softc *sc; 897 struct dc_mii_frame frame; 898 int i, phy_reg = 0; 899 900 sc = device_get_softc(dev); 901 bzero(&frame, sizeof(frame)); 902 903 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) 904 return (0); 905 906 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR) 907 return (0); 908 909 if (DC_IS_PNIC(sc)) { 910 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE | 911 (phy << 23) | (reg << 10) | data); 912 for (i = 0; i < DC_TIMEOUT; i++) { 913 if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY)) 914 break; 915 } 916 return (0); 917 } 918 919 if (DC_IS_COMET(sc)) { 920 switch (reg) { 921 case MII_BMCR: 922 phy_reg = DC_AL_BMCR; 923 break; 924 case MII_BMSR: 925 phy_reg = DC_AL_BMSR; 926 break; 927 case MII_PHYIDR1: 928 phy_reg = DC_AL_VENID; 929 break; 930 case MII_PHYIDR2: 931 phy_reg = DC_AL_DEVID; 932 break; 933 case MII_ANAR: 934 phy_reg = DC_AL_ANAR; 935 break; 936 case MII_ANLPAR: 937 phy_reg = DC_AL_LPAR; 938 break; 939 case MII_ANER: 940 phy_reg = DC_AL_ANER; 941 break; 942 default: 943 printf("dc%d: phy_write: bad phy register %x\n", 944 sc->dc_unit, reg); 945 return (0); 946 break; 947 } 948 949 CSR_WRITE_4(sc, phy_reg, data); 950 return (0); 951 } 952 953 frame.mii_phyaddr = phy; 954 frame.mii_regaddr = reg; 955 frame.mii_data = data; 956 957 if (sc->dc_type == DC_TYPE_98713) { 958 phy_reg = CSR_READ_4(sc, DC_NETCFG); 959 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); 960 } 961 dc_mii_writereg(sc, &frame); 962 if (sc->dc_type == DC_TYPE_98713) 963 CSR_WRITE_4(sc, DC_NETCFG, phy_reg); 964 965 return (0); 966 } 967 968 static void 969 dc_miibus_statchg(device_t dev) 970 { 971 struct dc_softc *sc; 972 struct mii_data *mii; 973 struct ifmedia *ifm; 974 975 sc = device_get_softc(dev); 976 if (DC_IS_ADMTEK(sc)) 977 return; 978 979 mii = device_get_softc(sc->dc_miibus); 980 ifm = &mii->mii_media; 981 if (DC_IS_DAVICOM(sc) && 982 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) { 983 dc_setcfg(sc, ifm->ifm_media); 984 sc->dc_if_media = ifm->ifm_media; 985 } else { 986 dc_setcfg(sc, mii->mii_media_active); 987 sc->dc_if_media = mii->mii_media_active; 988 } 989 } 990 991 /* 992 * Special support for DM9102A cards with HomePNA PHYs. Note: 993 * with the Davicom DM9102A/DM9801 eval board that I have, it seems 994 * to be impossible to talk to the management interface of the DM9801 995 * PHY (its MDIO pin is not connected to anything). Consequently, 996 * the driver has to just 'know' about the additional mode and deal 997 * with it itself. *sigh* 998 */ 999 static void 1000 dc_miibus_mediainit(device_t dev) 1001 { 1002 struct dc_softc *sc; 1003 struct mii_data *mii; 1004 struct ifmedia *ifm; 1005 int rev; 1006 1007 rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF; 1008 1009 sc = device_get_softc(dev); 1010 mii = device_get_softc(sc->dc_miibus); 1011 ifm = &mii->mii_media; 1012 1013 if (DC_IS_DAVICOM(sc) && rev >= DC_REVISION_DM9102A) 1014 ifmedia_add(ifm, IFM_ETHER | IFM_HPNA_1, 0, NULL); 1015 } 1016 1017 #define DC_BITS_512 9 1018 #define DC_BITS_128 7 1019 #define DC_BITS_64 6 1020 1021 static uint32_t 1022 dc_mchash_le(struct dc_softc *sc, const uint8_t *addr) 1023 { 1024 uint32_t crc; 1025 1026 /* Compute CRC for the address value. */ 1027 crc = ether_crc32_le(addr, ETHER_ADDR_LEN); 1028 1029 /* 1030 * The hash table on the PNIC II and the MX98715AEC-C/D/E 1031 * chips is only 128 bits wide. 1032 */ 1033 if (sc->dc_flags & DC_128BIT_HASH) 1034 return (crc & ((1 << DC_BITS_128) - 1)); 1035 1036 /* The hash table on the MX98715BEC is only 64 bits wide. */ 1037 if (sc->dc_flags & DC_64BIT_HASH) 1038 return (crc & ((1 << DC_BITS_64) - 1)); 1039 1040 /* Xircom's hash filtering table is different (read: weird) */ 1041 /* Xircom uses the LEAST significant bits */ 1042 if (DC_IS_XIRCOM(sc)) { 1043 if ((crc & 0x180) == 0x180) 1044 return ((crc & 0x0F) + (crc & 0x70) * 3 + (14 << 4)); 1045 else 1046 return ((crc & 0x1F) + ((crc >> 1) & 0xF0) * 3 + 1047 (12 << 4)); 1048 } 1049 1050 return (crc & ((1 << DC_BITS_512) - 1)); 1051 } 1052 1053 /* 1054 * Calculate CRC of a multicast group address, return the lower 6 bits. 1055 */ 1056 static uint32_t 1057 dc_mchash_be(const uint8_t *addr) 1058 { 1059 uint32_t crc; 1060 1061 /* Compute CRC for the address value. */ 1062 crc = ether_crc32_be(addr, ETHER_ADDR_LEN); 1063 1064 /* Return the filter bit position. */ 1065 return ((crc >> 26) & 0x0000003F); 1066 } 1067 1068 /* 1069 * 21143-style RX filter setup routine. Filter programming is done by 1070 * downloading a special setup frame into the TX engine. 21143, Macronix, 1071 * PNIC, PNIC II and Davicom chips are programmed this way. 1072 * 1073 * We always program the chip using 'hash perfect' mode, i.e. one perfect 1074 * address (our node address) and a 512-bit hash filter for multicast 1075 * frames. We also sneak the broadcast address into the hash filter since 1076 * we need that too. 1077 */ 1078 static void 1079 dc_setfilt_21143(struct dc_softc *sc) 1080 { 1081 struct dc_desc *sframe; 1082 u_int32_t h, *sp; 1083 struct ifmultiaddr *ifma; 1084 struct ifnet *ifp; 1085 int i; 1086 1087 ifp = &sc->arpcom.ac_if; 1088 1089 i = sc->dc_cdata.dc_tx_prod; 1090 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT); 1091 sc->dc_cdata.dc_tx_cnt++; 1092 sframe = &sc->dc_ldata->dc_tx_list[i]; 1093 sp = sc->dc_cdata.dc_sbuf; 1094 bzero(sp, DC_SFRAME_LEN); 1095 1096 sframe->dc_data = htole32(sc->dc_saddr); 1097 sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP | 1098 DC_TXCTL_TLINK | DC_FILTER_HASHPERF | DC_TXCTL_FINT); 1099 1100 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)sc->dc_cdata.dc_sbuf; 1101 1102 /* If we want promiscuous mode, set the allframes bit. */ 1103 if (ifp->if_flags & IFF_PROMISC) 1104 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1105 else 1106 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1107 1108 if (ifp->if_flags & IFF_ALLMULTI) 1109 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1110 else 1111 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1112 1113 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1114 if (ifma->ifma_addr->sa_family != AF_LINK) 1115 continue; 1116 h = dc_mchash_le(sc, 1117 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1118 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1119 } 1120 1121 if (ifp->if_flags & IFF_BROADCAST) { 1122 h = dc_mchash_le(sc, ifp->if_broadcastaddr); 1123 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1124 } 1125 1126 /* Set our MAC address */ 1127 sp[39] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 1128 sp[40] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 1129 sp[41] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 1130 1131 sframe->dc_status = htole32(DC_TXSTAT_OWN); 1132 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 1133 1134 /* 1135 * The PNIC takes an exceedingly long time to process its 1136 * setup frame; wait 10ms after posting the setup frame 1137 * before proceeding, just so it has time to swallow its 1138 * medicine. 1139 */ 1140 DELAY(10000); 1141 1142 ifp->if_timer = 5; 1143 } 1144 1145 static void 1146 dc_setfilt_admtek(struct dc_softc *sc) 1147 { 1148 struct ifnet *ifp; 1149 struct ifmultiaddr *ifma; 1150 int h = 0; 1151 u_int32_t hashes[2] = { 0, 0 }; 1152 1153 ifp = &sc->arpcom.ac_if; 1154 1155 /* Init our MAC address. */ 1156 CSR_WRITE_4(sc, DC_AL_PAR0, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); 1157 CSR_WRITE_4(sc, DC_AL_PAR1, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); 1158 1159 /* If we want promiscuous mode, set the allframes bit. */ 1160 if (ifp->if_flags & IFF_PROMISC) 1161 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1162 else 1163 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1164 1165 if (ifp->if_flags & IFF_ALLMULTI) 1166 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1167 else 1168 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1169 1170 /* First, zot all the existing hash bits. */ 1171 CSR_WRITE_4(sc, DC_AL_MAR0, 0); 1172 CSR_WRITE_4(sc, DC_AL_MAR1, 0); 1173 1174 /* 1175 * If we're already in promisc or allmulti mode, we 1176 * don't have to bother programming the multicast filter. 1177 */ 1178 if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) 1179 return; 1180 1181 /* Now program new ones. */ 1182 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1183 if (ifma->ifma_addr->sa_family != AF_LINK) 1184 continue; 1185 if (DC_IS_CENTAUR(sc)) 1186 h = dc_mchash_le(sc, 1187 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1188 else 1189 h = dc_mchash_be( 1190 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1191 if (h < 32) 1192 hashes[0] |= (1 << h); 1193 else 1194 hashes[1] |= (1 << (h - 32)); 1195 } 1196 1197 CSR_WRITE_4(sc, DC_AL_MAR0, hashes[0]); 1198 CSR_WRITE_4(sc, DC_AL_MAR1, hashes[1]); 1199 } 1200 1201 static void 1202 dc_setfilt_asix(struct dc_softc *sc) 1203 { 1204 struct ifnet *ifp; 1205 struct ifmultiaddr *ifma; 1206 int h = 0; 1207 u_int32_t hashes[2] = { 0, 0 }; 1208 1209 ifp = &sc->arpcom.ac_if; 1210 1211 /* Init our MAC address */ 1212 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR0); 1213 CSR_WRITE_4(sc, DC_AX_FILTDATA, 1214 *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); 1215 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR1); 1216 CSR_WRITE_4(sc, DC_AX_FILTDATA, 1217 *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); 1218 1219 /* If we want promiscuous mode, set the allframes bit. */ 1220 if (ifp->if_flags & IFF_PROMISC) 1221 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1222 else 1223 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1224 1225 if (ifp->if_flags & IFF_ALLMULTI) 1226 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1227 else 1228 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1229 1230 /* 1231 * The ASIX chip has a special bit to enable reception 1232 * of broadcast frames. 1233 */ 1234 if (ifp->if_flags & IFF_BROADCAST) 1235 DC_SETBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); 1236 else 1237 DC_CLRBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); 1238 1239 /* first, zot all the existing hash bits */ 1240 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); 1241 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); 1242 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); 1243 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); 1244 1245 /* 1246 * If we're already in promisc or allmulti mode, we 1247 * don't have to bother programming the multicast filter. 1248 */ 1249 if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) 1250 return; 1251 1252 /* now program new ones */ 1253 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1254 if (ifma->ifma_addr->sa_family != AF_LINK) 1255 continue; 1256 h = dc_mchash_be(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1257 if (h < 32) 1258 hashes[0] |= (1 << h); 1259 else 1260 hashes[1] |= (1 << (h - 32)); 1261 } 1262 1263 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); 1264 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]); 1265 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); 1266 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]); 1267 } 1268 1269 static void 1270 dc_setfilt_xircom(struct dc_softc *sc) 1271 { 1272 struct ifnet *ifp; 1273 struct ifmultiaddr *ifma; 1274 struct dc_desc *sframe; 1275 u_int32_t h, *sp; 1276 int i; 1277 1278 ifp = &sc->arpcom.ac_if; 1279 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)); 1280 1281 i = sc->dc_cdata.dc_tx_prod; 1282 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT); 1283 sc->dc_cdata.dc_tx_cnt++; 1284 sframe = &sc->dc_ldata->dc_tx_list[i]; 1285 sp = sc->dc_cdata.dc_sbuf; 1286 bzero(sp, DC_SFRAME_LEN); 1287 1288 sframe->dc_data = htole32(sc->dc_saddr); 1289 sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP | 1290 DC_TXCTL_TLINK | DC_FILTER_HASHPERF | DC_TXCTL_FINT); 1291 1292 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)sc->dc_cdata.dc_sbuf; 1293 1294 /* If we want promiscuous mode, set the allframes bit. */ 1295 if (ifp->if_flags & IFF_PROMISC) 1296 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1297 else 1298 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1299 1300 if (ifp->if_flags & IFF_ALLMULTI) 1301 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1302 else 1303 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1304 1305 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1306 if (ifma->ifma_addr->sa_family != AF_LINK) 1307 continue; 1308 h = dc_mchash_le(sc, 1309 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1310 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1311 } 1312 1313 if (ifp->if_flags & IFF_BROADCAST) { 1314 h = dc_mchash_le(sc, ifp->if_broadcastaddr); 1315 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1316 } 1317 1318 /* Set our MAC address */ 1319 sp[0] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 1320 sp[1] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 1321 sp[2] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 1322 1323 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 1324 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); 1325 ifp->if_flags |= IFF_RUNNING; 1326 sframe->dc_status = htole32(DC_TXSTAT_OWN); 1327 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 1328 1329 /* 1330 * Wait some time... 1331 */ 1332 DELAY(1000); 1333 1334 ifp->if_timer = 5; 1335 } 1336 1337 static void 1338 dc_setfilt(struct dc_softc *sc) 1339 { 1340 1341 if (DC_IS_INTEL(sc) || DC_IS_MACRONIX(sc) || DC_IS_PNIC(sc) || 1342 DC_IS_PNICII(sc) || DC_IS_DAVICOM(sc) || DC_IS_CONEXANT(sc)) 1343 dc_setfilt_21143(sc); 1344 1345 if (DC_IS_ASIX(sc)) 1346 dc_setfilt_asix(sc); 1347 1348 if (DC_IS_ADMTEK(sc)) 1349 dc_setfilt_admtek(sc); 1350 1351 if (DC_IS_XIRCOM(sc)) 1352 dc_setfilt_xircom(sc); 1353 } 1354 1355 /* 1356 * In order to fiddle with the 'full-duplex' and '100Mbps' bits in 1357 * the netconfig register, we first have to put the transmit and/or 1358 * receive logic in the idle state. 1359 */ 1360 static void 1361 dc_setcfg(struct dc_softc *sc, int media) 1362 { 1363 int i, restart = 0, watchdogreg; 1364 u_int32_t isr; 1365 1366 if (IFM_SUBTYPE(media) == IFM_NONE) 1367 return; 1368 1369 if (CSR_READ_4(sc, DC_NETCFG) & (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)) { 1370 restart = 1; 1371 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)); 1372 1373 for (i = 0; i < DC_TIMEOUT; i++) { 1374 isr = CSR_READ_4(sc, DC_ISR); 1375 if (isr & DC_ISR_TX_IDLE && 1376 ((isr & DC_ISR_RX_STATE) == DC_RXSTATE_STOPPED || 1377 (isr & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT)) 1378 break; 1379 DELAY(10); 1380 } 1381 1382 if (i == DC_TIMEOUT) 1383 printf("dc%d: failed to force tx and " 1384 "rx to idle state\n", sc->dc_unit); 1385 } 1386 1387 if (IFM_SUBTYPE(media) == IFM_100_TX) { 1388 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); 1389 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); 1390 if (sc->dc_pmode == DC_PMODE_MII) { 1391 if (DC_IS_INTEL(sc)) { 1392 /* There's a write enable bit here that reads as 1. */ 1393 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); 1394 watchdogreg &= ~DC_WDOG_CTLWREN; 1395 watchdogreg |= DC_WDOG_JABBERDIS; 1396 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); 1397 } else { 1398 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); 1399 } 1400 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1401 DC_NETCFG_PORTSEL | DC_NETCFG_SCRAMBLER)); 1402 if (sc->dc_type == DC_TYPE_98713) 1403 DC_SETBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1404 DC_NETCFG_SCRAMBLER)); 1405 if (!DC_IS_DAVICOM(sc)) 1406 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1407 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1408 if (DC_IS_INTEL(sc)) 1409 dc_apply_fixup(sc, IFM_AUTO); 1410 } else { 1411 if (DC_IS_PNIC(sc)) { 1412 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_SPEEDSEL); 1413 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); 1414 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); 1415 } 1416 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1417 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1418 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); 1419 if (DC_IS_INTEL(sc)) 1420 dc_apply_fixup(sc, 1421 (media & IFM_GMASK) == IFM_FDX ? 1422 IFM_100_TX | IFM_FDX : IFM_100_TX); 1423 } 1424 } 1425 1426 if (IFM_SUBTYPE(media) == IFM_10_T) { 1427 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); 1428 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); 1429 if (sc->dc_pmode == DC_PMODE_MII) { 1430 /* There's a write enable bit here that reads as 1. */ 1431 if (DC_IS_INTEL(sc)) { 1432 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); 1433 watchdogreg &= ~DC_WDOG_CTLWREN; 1434 watchdogreg |= DC_WDOG_JABBERDIS; 1435 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); 1436 } else { 1437 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); 1438 } 1439 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1440 DC_NETCFG_PORTSEL | DC_NETCFG_SCRAMBLER)); 1441 if (sc->dc_type == DC_TYPE_98713) 1442 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1443 if (!DC_IS_DAVICOM(sc)) 1444 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1445 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1446 if (DC_IS_INTEL(sc)) 1447 dc_apply_fixup(sc, IFM_AUTO); 1448 } else { 1449 if (DC_IS_PNIC(sc)) { 1450 DC_PN_GPIO_CLRBIT(sc, DC_PN_GPIO_SPEEDSEL); 1451 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); 1452 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); 1453 } 1454 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1455 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1456 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); 1457 if (DC_IS_INTEL(sc)) { 1458 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 1459 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1460 if ((media & IFM_GMASK) == IFM_FDX) 1461 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3D); 1462 else 1463 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3F); 1464 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 1465 DC_CLRBIT(sc, DC_10BTCTRL, 1466 DC_TCTL_AUTONEGENBL); 1467 dc_apply_fixup(sc, 1468 (media & IFM_GMASK) == IFM_FDX ? 1469 IFM_10_T | IFM_FDX : IFM_10_T); 1470 DELAY(20000); 1471 } 1472 } 1473 } 1474 1475 /* 1476 * If this is a Davicom DM9102A card with a DM9801 HomePNA 1477 * PHY and we want HomePNA mode, set the portsel bit to turn 1478 * on the external MII port. 1479 */ 1480 if (DC_IS_DAVICOM(sc)) { 1481 if (IFM_SUBTYPE(media) == IFM_HPNA_1) { 1482 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1483 sc->dc_link = 1; 1484 } else { 1485 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1486 } 1487 } 1488 1489 if ((media & IFM_GMASK) == IFM_FDX) { 1490 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 1491 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) 1492 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); 1493 } else { 1494 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 1495 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) 1496 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); 1497 } 1498 1499 if (restart) 1500 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON | DC_NETCFG_RX_ON); 1501 } 1502 1503 static void 1504 dc_reset(struct dc_softc *sc) 1505 { 1506 int i; 1507 1508 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); 1509 1510 for (i = 0; i < DC_TIMEOUT; i++) { 1511 DELAY(10); 1512 if (!(CSR_READ_4(sc, DC_BUSCTL) & DC_BUSCTL_RESET)) 1513 break; 1514 } 1515 1516 if (DC_IS_ASIX(sc) || DC_IS_ADMTEK(sc) || DC_IS_CONEXANT(sc) || 1517 DC_IS_XIRCOM(sc) || DC_IS_INTEL(sc)) { 1518 DELAY(10000); 1519 DC_CLRBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); 1520 i = 0; 1521 } 1522 1523 if (i == DC_TIMEOUT) 1524 printf("dc%d: reset never completed!\n", sc->dc_unit); 1525 1526 /* Wait a little while for the chip to get its brains in order. */ 1527 DELAY(1000); 1528 1529 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 1530 CSR_WRITE_4(sc, DC_BUSCTL, 0x00000000); 1531 CSR_WRITE_4(sc, DC_NETCFG, 0x00000000); 1532 1533 /* 1534 * Bring the SIA out of reset. In some cases, it looks 1535 * like failing to unreset the SIA soon enough gets it 1536 * into a state where it will never come out of reset 1537 * until we reset the whole chip again. 1538 */ 1539 if (DC_IS_INTEL(sc)) { 1540 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 1541 CSR_WRITE_4(sc, DC_10BTCTRL, 0); 1542 CSR_WRITE_4(sc, DC_WATCHDOG, 0); 1543 } 1544 } 1545 1546 static struct dc_type * 1547 dc_devtype(device_t dev) 1548 { 1549 struct dc_type *t; 1550 u_int32_t rev; 1551 1552 t = dc_devs; 1553 1554 while (t->dc_name != NULL) { 1555 if ((pci_get_vendor(dev) == t->dc_vid) && 1556 (pci_get_device(dev) == t->dc_did)) { 1557 /* Check the PCI revision */ 1558 rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF; 1559 if (t->dc_did == DC_DEVICEID_98713 && 1560 rev >= DC_REVISION_98713A) 1561 t++; 1562 if (t->dc_did == DC_DEVICEID_98713_CP && 1563 rev >= DC_REVISION_98713A) 1564 t++; 1565 if (t->dc_did == DC_DEVICEID_987x5 && 1566 rev >= DC_REVISION_98715AEC_C) 1567 t++; 1568 if (t->dc_did == DC_DEVICEID_987x5 && 1569 rev >= DC_REVISION_98725) 1570 t++; 1571 if (t->dc_did == DC_DEVICEID_AX88140A && 1572 rev >= DC_REVISION_88141) 1573 t++; 1574 if (t->dc_did == DC_DEVICEID_82C168 && 1575 rev >= DC_REVISION_82C169) 1576 t++; 1577 if (t->dc_did == DC_DEVICEID_DM9102 && 1578 rev >= DC_REVISION_DM9102A) 1579 t++; 1580 /* 1581 * The Microsoft MN-130 has a device ID of 0x0002, 1582 * which happens to be the same as the PNIC 82c168. 1583 * To keep dc_attach() from getting confused, we 1584 * pretend its ID is something different. 1585 * XXX: ideally, dc_attach() should be checking 1586 * vendorid+deviceid together to avoid such 1587 * collisions. 1588 */ 1589 if (t->dc_vid == DC_VENDORID_MICROSOFT && 1590 t->dc_did == DC_DEVICEID_MSMN130) 1591 t++; 1592 return (t); 1593 } 1594 t++; 1595 } 1596 1597 return (NULL); 1598 } 1599 1600 /* 1601 * Probe for a 21143 or clone chip. Check the PCI vendor and device 1602 * IDs against our list and return a device name if we find a match. 1603 * We do a little bit of extra work to identify the exact type of 1604 * chip. The MX98713 and MX98713A have the same PCI vendor/device ID, 1605 * but different revision IDs. The same is true for 98715/98715A 1606 * chips and the 98725, as well as the ASIX and ADMtek chips. In some 1607 * cases, the exact chip revision affects driver behavior. 1608 */ 1609 static int 1610 dc_probe(device_t dev) 1611 { 1612 struct dc_type *t; 1613 1614 t = dc_devtype(dev); 1615 1616 if (t != NULL) { 1617 device_set_desc(dev, t->dc_name); 1618 return (BUS_PROBE_DEFAULT); 1619 } 1620 1621 return (ENXIO); 1622 } 1623 1624 static void 1625 dc_apply_fixup(struct dc_softc *sc, int media) 1626 { 1627 struct dc_mediainfo *m; 1628 u_int8_t *p; 1629 int i; 1630 u_int32_t reg; 1631 1632 m = sc->dc_mi; 1633 1634 while (m != NULL) { 1635 if (m->dc_media == media) 1636 break; 1637 m = m->dc_next; 1638 } 1639 1640 if (m == NULL) 1641 return; 1642 1643 for (i = 0, p = m->dc_reset_ptr; i < m->dc_reset_len; i++, p += 2) { 1644 reg = (p[0] | (p[1] << 8)) << 16; 1645 CSR_WRITE_4(sc, DC_WATCHDOG, reg); 1646 } 1647 1648 for (i = 0, p = m->dc_gp_ptr; i < m->dc_gp_len; i++, p += 2) { 1649 reg = (p[0] | (p[1] << 8)) << 16; 1650 CSR_WRITE_4(sc, DC_WATCHDOG, reg); 1651 } 1652 } 1653 1654 static void 1655 dc_decode_leaf_sia(struct dc_softc *sc, struct dc_eblock_sia *l) 1656 { 1657 struct dc_mediainfo *m; 1658 1659 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1660 switch (l->dc_sia_code & ~DC_SIA_CODE_EXT) { 1661 case DC_SIA_CODE_10BT: 1662 m->dc_media = IFM_10_T; 1663 break; 1664 case DC_SIA_CODE_10BT_FDX: 1665 m->dc_media = IFM_10_T | IFM_FDX; 1666 break; 1667 case DC_SIA_CODE_10B2: 1668 m->dc_media = IFM_10_2; 1669 break; 1670 case DC_SIA_CODE_10B5: 1671 m->dc_media = IFM_10_5; 1672 break; 1673 default: 1674 break; 1675 } 1676 1677 /* 1678 * We need to ignore CSR13, CSR14, CSR15 for SIA mode. 1679 * Things apparently already work for cards that do 1680 * supply Media Specific Data. 1681 */ 1682 if (l->dc_sia_code & DC_SIA_CODE_EXT) { 1683 m->dc_gp_len = 2; 1684 m->dc_gp_ptr = 1685 (u_int8_t *)&l->dc_un.dc_sia_ext.dc_sia_gpio_ctl; 1686 } else { 1687 m->dc_gp_len = 2; 1688 m->dc_gp_ptr = 1689 (u_int8_t *)&l->dc_un.dc_sia_noext.dc_sia_gpio_ctl; 1690 } 1691 1692 m->dc_next = sc->dc_mi; 1693 sc->dc_mi = m; 1694 1695 sc->dc_pmode = DC_PMODE_SIA; 1696 } 1697 1698 static void 1699 dc_decode_leaf_sym(struct dc_softc *sc, struct dc_eblock_sym *l) 1700 { 1701 struct dc_mediainfo *m; 1702 1703 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1704 if (l->dc_sym_code == DC_SYM_CODE_100BT) 1705 m->dc_media = IFM_100_TX; 1706 1707 if (l->dc_sym_code == DC_SYM_CODE_100BT_FDX) 1708 m->dc_media = IFM_100_TX | IFM_FDX; 1709 1710 m->dc_gp_len = 2; 1711 m->dc_gp_ptr = (u_int8_t *)&l->dc_sym_gpio_ctl; 1712 1713 m->dc_next = sc->dc_mi; 1714 sc->dc_mi = m; 1715 1716 sc->dc_pmode = DC_PMODE_SYM; 1717 } 1718 1719 static void 1720 dc_decode_leaf_mii(struct dc_softc *sc, struct dc_eblock_mii *l) 1721 { 1722 struct dc_mediainfo *m; 1723 u_int8_t *p; 1724 1725 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1726 /* We abuse IFM_AUTO to represent MII. */ 1727 m->dc_media = IFM_AUTO; 1728 m->dc_gp_len = l->dc_gpr_len; 1729 1730 p = (u_int8_t *)l; 1731 p += sizeof(struct dc_eblock_mii); 1732 m->dc_gp_ptr = p; 1733 p += 2 * l->dc_gpr_len; 1734 m->dc_reset_len = *p; 1735 p++; 1736 m->dc_reset_ptr = p; 1737 1738 m->dc_next = sc->dc_mi; 1739 sc->dc_mi = m; 1740 } 1741 1742 static void 1743 dc_read_srom(struct dc_softc *sc, int bits) 1744 { 1745 int size; 1746 1747 size = 2 << bits; 1748 sc->dc_srom = malloc(size, M_DEVBUF, M_NOWAIT); 1749 dc_read_eeprom(sc, (caddr_t)sc->dc_srom, 0, (size / 2), 0); 1750 } 1751 1752 static void 1753 dc_parse_21143_srom(struct dc_softc *sc) 1754 { 1755 struct dc_leaf_hdr *lhdr; 1756 struct dc_eblock_hdr *hdr; 1757 int have_mii, i, loff; 1758 char *ptr; 1759 1760 have_mii = 0; 1761 loff = sc->dc_srom[27]; 1762 lhdr = (struct dc_leaf_hdr *)&(sc->dc_srom[loff]); 1763 1764 ptr = (char *)lhdr; 1765 ptr += sizeof(struct dc_leaf_hdr) - 1; 1766 /* 1767 * Look if we got a MII media block. 1768 */ 1769 for (i = 0; i < lhdr->dc_mcnt; i++) { 1770 hdr = (struct dc_eblock_hdr *)ptr; 1771 if (hdr->dc_type == DC_EBLOCK_MII) 1772 have_mii++; 1773 1774 ptr += (hdr->dc_len & 0x7F); 1775 ptr++; 1776 } 1777 1778 /* 1779 * Do the same thing again. Only use SIA and SYM media 1780 * blocks if no MII media block is available. 1781 */ 1782 ptr = (char *)lhdr; 1783 ptr += sizeof(struct dc_leaf_hdr) - 1; 1784 for (i = 0; i < lhdr->dc_mcnt; i++) { 1785 hdr = (struct dc_eblock_hdr *)ptr; 1786 switch (hdr->dc_type) { 1787 case DC_EBLOCK_MII: 1788 dc_decode_leaf_mii(sc, (struct dc_eblock_mii *)hdr); 1789 break; 1790 case DC_EBLOCK_SIA: 1791 if (! have_mii) 1792 dc_decode_leaf_sia(sc, 1793 (struct dc_eblock_sia *)hdr); 1794 break; 1795 case DC_EBLOCK_SYM: 1796 if (! have_mii) 1797 dc_decode_leaf_sym(sc, 1798 (struct dc_eblock_sym *)hdr); 1799 break; 1800 default: 1801 /* Don't care. Yet. */ 1802 break; 1803 } 1804 ptr += (hdr->dc_len & 0x7F); 1805 ptr++; 1806 } 1807 } 1808 1809 static void 1810 dc_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1811 { 1812 u_int32_t *paddr; 1813 1814 KASSERT(nseg == 1, ("wrong number of segments, should be 1")); 1815 paddr = arg; 1816 *paddr = segs->ds_addr; 1817 } 1818 1819 /* 1820 * Attach the interface. Allocate softc structures, do ifmedia 1821 * setup and ethernet/BPF attach. 1822 */ 1823 static int 1824 dc_attach(device_t dev) 1825 { 1826 int tmp = 0; 1827 u_char eaddr[ETHER_ADDR_LEN]; 1828 u_int32_t command; 1829 struct dc_softc *sc; 1830 struct ifnet *ifp; 1831 u_int32_t revision; 1832 int unit, error = 0, rid, mac_offset; 1833 int i; 1834 u_int8_t *mac; 1835 1836 sc = device_get_softc(dev); 1837 unit = device_get_unit(dev); 1838 1839 mtx_init(&sc->dc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 1840 MTX_DEF | MTX_RECURSE); 1841 1842 /* 1843 * Map control/status registers. 1844 */ 1845 pci_enable_busmaster(dev); 1846 1847 rid = DC_RID; 1848 sc->dc_res = bus_alloc_resource_any(dev, DC_RES, &rid, RF_ACTIVE); 1849 1850 if (sc->dc_res == NULL) { 1851 printf("dc%d: couldn't map ports/memory\n", unit); 1852 error = ENXIO; 1853 goto fail; 1854 } 1855 1856 sc->dc_btag = rman_get_bustag(sc->dc_res); 1857 sc->dc_bhandle = rman_get_bushandle(sc->dc_res); 1858 1859 /* Allocate interrupt. */ 1860 rid = 0; 1861 sc->dc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 1862 RF_SHAREABLE | RF_ACTIVE); 1863 1864 if (sc->dc_irq == NULL) { 1865 printf("dc%d: couldn't map interrupt\n", unit); 1866 error = ENXIO; 1867 goto fail; 1868 } 1869 1870 /* Need this info to decide on a chip type. */ 1871 sc->dc_info = dc_devtype(dev); 1872 revision = pci_read_config(dev, DC_PCI_CFRV, 4) & 0x000000FF; 1873 1874 /* Get the eeprom width, but PNIC and XIRCOM have diff eeprom */ 1875 if (sc->dc_info->dc_did != DC_DEVICEID_82C168 && 1876 sc->dc_info->dc_did != DC_DEVICEID_X3201) 1877 dc_eeprom_width(sc); 1878 1879 switch (sc->dc_info->dc_did) { 1880 case DC_DEVICEID_21143: 1881 sc->dc_type = DC_TYPE_21143; 1882 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1883 sc->dc_flags |= DC_REDUCED_MII_POLL; 1884 /* Save EEPROM contents so we can parse them later. */ 1885 dc_read_srom(sc, sc->dc_romwidth); 1886 break; 1887 case DC_DEVICEID_DM9009: 1888 case DC_DEVICEID_DM9100: 1889 case DC_DEVICEID_DM9102: 1890 sc->dc_type = DC_TYPE_DM9102; 1891 sc->dc_flags |= DC_TX_COALESCE | DC_TX_INTR_ALWAYS; 1892 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_TX_STORENFWD; 1893 sc->dc_flags |= DC_TX_ALIGN; 1894 sc->dc_pmode = DC_PMODE_MII; 1895 /* Increase the latency timer value. */ 1896 command = pci_read_config(dev, DC_PCI_CFLT, 4); 1897 command &= 0xFFFF00FF; 1898 command |= 0x00008000; 1899 pci_write_config(dev, DC_PCI_CFLT, command, 4); 1900 break; 1901 case DC_DEVICEID_AL981: 1902 sc->dc_type = DC_TYPE_AL981; 1903 sc->dc_flags |= DC_TX_USE_TX_INTR; 1904 sc->dc_flags |= DC_TX_ADMTEK_WAR; 1905 sc->dc_pmode = DC_PMODE_MII; 1906 dc_read_srom(sc, sc->dc_romwidth); 1907 break; 1908 case DC_DEVICEID_AN985: 1909 case DC_DEVICEID_ADM9511: 1910 case DC_DEVICEID_ADM9513: 1911 case DC_DEVICEID_FA511: 1912 case DC_DEVICEID_FE2500: 1913 case DC_DEVICEID_EN2242: 1914 case DC_DEVICEID_HAWKING_PN672TX: 1915 case DC_DEVICEID_3CSOHOB: 1916 case DC_DEVICEID_MSMN120: 1917 case DC_DEVICEID_MSMN130_FAKE: /* XXX avoid collision with PNIC*/ 1918 sc->dc_type = DC_TYPE_AN985; 1919 sc->dc_flags |= DC_64BIT_HASH; 1920 sc->dc_flags |= DC_TX_USE_TX_INTR; 1921 sc->dc_flags |= DC_TX_ADMTEK_WAR; 1922 sc->dc_pmode = DC_PMODE_MII; 1923 /* Don't read SROM for - auto-loaded on reset */ 1924 break; 1925 case DC_DEVICEID_98713: 1926 case DC_DEVICEID_98713_CP: 1927 if (revision < DC_REVISION_98713A) { 1928 sc->dc_type = DC_TYPE_98713; 1929 } 1930 if (revision >= DC_REVISION_98713A) { 1931 sc->dc_type = DC_TYPE_98713A; 1932 sc->dc_flags |= DC_21143_NWAY; 1933 } 1934 sc->dc_flags |= DC_REDUCED_MII_POLL; 1935 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1936 break; 1937 case DC_DEVICEID_987x5: 1938 case DC_DEVICEID_EN1217: 1939 /* 1940 * Macronix MX98715AEC-C/D/E parts have only a 1941 * 128-bit hash table. We need to deal with these 1942 * in the same manner as the PNIC II so that we 1943 * get the right number of bits out of the 1944 * CRC routine. 1945 */ 1946 if (revision >= DC_REVISION_98715AEC_C && 1947 revision < DC_REVISION_98725) 1948 sc->dc_flags |= DC_128BIT_HASH; 1949 sc->dc_type = DC_TYPE_987x5; 1950 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1951 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1952 break; 1953 case DC_DEVICEID_98727: 1954 sc->dc_type = DC_TYPE_987x5; 1955 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1956 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1957 break; 1958 case DC_DEVICEID_82C115: 1959 sc->dc_type = DC_TYPE_PNICII; 1960 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR | DC_128BIT_HASH; 1961 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1962 break; 1963 case DC_DEVICEID_82C168: 1964 sc->dc_type = DC_TYPE_PNIC; 1965 sc->dc_flags |= DC_TX_STORENFWD | DC_TX_INTR_ALWAYS; 1966 sc->dc_flags |= DC_PNIC_RX_BUG_WAR; 1967 sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, M_NOWAIT); 1968 if (revision < DC_REVISION_82C169) 1969 sc->dc_pmode = DC_PMODE_SYM; 1970 break; 1971 case DC_DEVICEID_AX88140A: 1972 sc->dc_type = DC_TYPE_ASIX; 1973 sc->dc_flags |= DC_TX_USE_TX_INTR | DC_TX_INTR_FIRSTFRAG; 1974 sc->dc_flags |= DC_REDUCED_MII_POLL; 1975 sc->dc_pmode = DC_PMODE_MII; 1976 break; 1977 case DC_DEVICEID_X3201: 1978 sc->dc_type = DC_TYPE_XIRCOM; 1979 sc->dc_flags |= DC_TX_INTR_ALWAYS | DC_TX_COALESCE | 1980 DC_TX_ALIGN; 1981 /* 1982 * We don't actually need to coalesce, but we're doing 1983 * it to obtain a double word aligned buffer. 1984 * The DC_TX_COALESCE flag is required. 1985 */ 1986 sc->dc_pmode = DC_PMODE_MII; 1987 break; 1988 case DC_DEVICEID_RS7112: 1989 sc->dc_type = DC_TYPE_CONEXANT; 1990 sc->dc_flags |= DC_TX_INTR_ALWAYS; 1991 sc->dc_flags |= DC_REDUCED_MII_POLL; 1992 sc->dc_pmode = DC_PMODE_MII; 1993 dc_read_srom(sc, sc->dc_romwidth); 1994 break; 1995 default: 1996 printf("dc%d: unknown device: %x\n", sc->dc_unit, 1997 sc->dc_info->dc_did); 1998 break; 1999 } 2000 2001 /* Save the cache line size. */ 2002 if (DC_IS_DAVICOM(sc)) 2003 sc->dc_cachesize = 0; 2004 else 2005 sc->dc_cachesize = pci_read_config(dev, 2006 DC_PCI_CFLT, 4) & 0xFF; 2007 2008 /* Reset the adapter. */ 2009 dc_reset(sc); 2010 2011 /* Take 21143 out of snooze mode */ 2012 if (DC_IS_INTEL(sc) || DC_IS_XIRCOM(sc)) { 2013 command = pci_read_config(dev, DC_PCI_CFDD, 4); 2014 command &= ~(DC_CFDD_SNOOZE_MODE | DC_CFDD_SLEEP_MODE); 2015 pci_write_config(dev, DC_PCI_CFDD, command, 4); 2016 } 2017 2018 /* 2019 * Try to learn something about the supported media. 2020 * We know that ASIX and ADMtek and Davicom devices 2021 * will *always* be using MII media, so that's a no-brainer. 2022 * The tricky ones are the Macronix/PNIC II and the 2023 * Intel 21143. 2024 */ 2025 if (DC_IS_INTEL(sc)) 2026 dc_parse_21143_srom(sc); 2027 else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 2028 if (sc->dc_type == DC_TYPE_98713) 2029 sc->dc_pmode = DC_PMODE_MII; 2030 else 2031 sc->dc_pmode = DC_PMODE_SYM; 2032 } else if (!sc->dc_pmode) 2033 sc->dc_pmode = DC_PMODE_MII; 2034 2035 /* 2036 * Get station address from the EEPROM. 2037 */ 2038 switch(sc->dc_type) { 2039 case DC_TYPE_98713: 2040 case DC_TYPE_98713A: 2041 case DC_TYPE_987x5: 2042 case DC_TYPE_PNICII: 2043 dc_read_eeprom(sc, (caddr_t)&mac_offset, 2044 (DC_EE_NODEADDR_OFFSET / 2), 1, 0); 2045 dc_read_eeprom(sc, (caddr_t)&eaddr, (mac_offset / 2), 3, 0); 2046 break; 2047 case DC_TYPE_PNIC: 2048 dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1); 2049 break; 2050 case DC_TYPE_DM9102: 2051 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2052 #ifdef __sparc64__ 2053 /* 2054 * If this is an onboard dc(4) the station address read from 2055 * the EEPROM is all zero and we have to get it from the fcode. 2056 */ 2057 for (i = 0; i < ETHER_ADDR_LEN; i++) 2058 if (eaddr[i] != 0x00) 2059 break; 2060 if (i >= ETHER_ADDR_LEN) 2061 OF_getetheraddr(dev, eaddr); 2062 #endif 2063 break; 2064 case DC_TYPE_21143: 2065 case DC_TYPE_ASIX: 2066 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2067 break; 2068 case DC_TYPE_AL981: 2069 case DC_TYPE_AN985: 2070 *(u_int32_t *)(&eaddr[0]) = CSR_READ_4(sc, DC_AL_PAR0); 2071 *(u_int16_t *)(&eaddr[4]) = CSR_READ_4(sc, DC_AL_PAR1); 2072 break; 2073 case DC_TYPE_CONEXANT: 2074 bcopy(sc->dc_srom + DC_CONEXANT_EE_NODEADDR, &eaddr, 2075 ETHER_ADDR_LEN); 2076 break; 2077 case DC_TYPE_XIRCOM: 2078 /* The MAC comes from the CIS. */ 2079 mac = pci_get_ether(dev); 2080 if (!mac) { 2081 device_printf(dev, "No station address in CIS!\n"); 2082 error = ENXIO; 2083 goto fail; 2084 } 2085 bcopy(mac, eaddr, ETHER_ADDR_LEN); 2086 break; 2087 default: 2088 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2089 break; 2090 } 2091 2092 sc->dc_unit = unit; 2093 bcopy(eaddr, &sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 2094 2095 /* Allocate a busdma tag and DMA safe memory for TX/RX descriptors. */ 2096 error = bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, 2097 BUS_SPACE_MAXADDR, NULL, NULL, sizeof(struct dc_list_data), 1, 2098 sizeof(struct dc_list_data), 0, NULL, NULL, &sc->dc_ltag); 2099 if (error) { 2100 printf("dc%d: failed to allocate busdma tag\n", unit); 2101 error = ENXIO; 2102 goto fail; 2103 } 2104 error = bus_dmamem_alloc(sc->dc_ltag, (void **)&sc->dc_ldata, 2105 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->dc_lmap); 2106 if (error) { 2107 printf("dc%d: failed to allocate DMA safe memory\n", unit); 2108 error = ENXIO; 2109 goto fail; 2110 } 2111 error = bus_dmamap_load(sc->dc_ltag, sc->dc_lmap, sc->dc_ldata, 2112 sizeof(struct dc_list_data), dc_dma_map_addr, &sc->dc_laddr, 2113 BUS_DMA_NOWAIT); 2114 if (error) { 2115 printf("dc%d: cannot get address of the descriptors\n", unit); 2116 error = ENXIO; 2117 goto fail; 2118 } 2119 2120 /* 2121 * Allocate a busdma tag and DMA safe memory for the multicast 2122 * setup frame. 2123 */ 2124 error = bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, 2125 BUS_SPACE_MAXADDR, NULL, NULL, DC_SFRAME_LEN + DC_MIN_FRAMELEN, 1, 2126 DC_SFRAME_LEN + DC_MIN_FRAMELEN, 0, NULL, NULL, &sc->dc_stag); 2127 if (error) { 2128 printf("dc%d: failed to allocate busdma tag\n", unit); 2129 error = ENXIO; 2130 goto fail; 2131 } 2132 error = bus_dmamem_alloc(sc->dc_stag, (void **)&sc->dc_cdata.dc_sbuf, 2133 BUS_DMA_NOWAIT, &sc->dc_smap); 2134 if (error) { 2135 printf("dc%d: failed to allocate DMA safe memory\n", unit); 2136 error = ENXIO; 2137 goto fail; 2138 } 2139 error = bus_dmamap_load(sc->dc_stag, sc->dc_smap, sc->dc_cdata.dc_sbuf, 2140 DC_SFRAME_LEN, dc_dma_map_addr, &sc->dc_saddr, BUS_DMA_NOWAIT); 2141 if (error) { 2142 printf("dc%d: cannot get address of the descriptors\n", unit); 2143 error = ENXIO; 2144 goto fail; 2145 } 2146 2147 /* Allocate a busdma tag for mbufs. */ 2148 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 2149 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, DC_TX_LIST_CNT, MCLBYTES, 2150 0, NULL, NULL, &sc->dc_mtag); 2151 if (error) { 2152 printf("dc%d: failed to allocate busdma tag\n", unit); 2153 error = ENXIO; 2154 goto fail; 2155 } 2156 2157 /* Create the TX/RX busdma maps. */ 2158 for (i = 0; i < DC_TX_LIST_CNT; i++) { 2159 error = bus_dmamap_create(sc->dc_mtag, 0, 2160 &sc->dc_cdata.dc_tx_map[i]); 2161 if (error) { 2162 printf("dc%d: failed to init TX ring\n", unit); 2163 error = ENXIO; 2164 goto fail; 2165 } 2166 } 2167 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2168 error = bus_dmamap_create(sc->dc_mtag, 0, 2169 &sc->dc_cdata.dc_rx_map[i]); 2170 if (error) { 2171 printf("dc%d: failed to init RX ring\n", unit); 2172 error = ENXIO; 2173 goto fail; 2174 } 2175 } 2176 error = bus_dmamap_create(sc->dc_mtag, 0, &sc->dc_sparemap); 2177 if (error) { 2178 printf("dc%d: failed to init RX ring\n", unit); 2179 error = ENXIO; 2180 goto fail; 2181 } 2182 2183 ifp = &sc->arpcom.ac_if; 2184 ifp->if_softc = sc; 2185 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 2186 /* XXX: bleah, MTU gets overwritten in ether_ifattach() */ 2187 ifp->if_mtu = ETHERMTU; 2188 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 2189 if (!IS_MPSAFE) 2190 ifp->if_flags |= IFF_NEEDSGIANT; 2191 ifp->if_ioctl = dc_ioctl; 2192 ifp->if_start = dc_start; 2193 ifp->if_watchdog = dc_watchdog; 2194 ifp->if_init = dc_init; 2195 ifp->if_baudrate = 10000000; 2196 IFQ_SET_MAXLEN(&ifp->if_snd, DC_TX_LIST_CNT - 1); 2197 ifp->if_snd.ifq_drv_maxlen = DC_TX_LIST_CNT - 1; 2198 IFQ_SET_READY(&ifp->if_snd); 2199 2200 /* 2201 * Do MII setup. If this is a 21143, check for a PHY on the 2202 * MII bus after applying any necessary fixups to twiddle the 2203 * GPIO bits. If we don't end up finding a PHY, restore the 2204 * old selection (SIA only or SIA/SYM) and attach the dcphy 2205 * driver instead. 2206 */ 2207 if (DC_IS_INTEL(sc)) { 2208 dc_apply_fixup(sc, IFM_AUTO); 2209 tmp = sc->dc_pmode; 2210 sc->dc_pmode = DC_PMODE_MII; 2211 } 2212 2213 /* 2214 * Setup General Purpose port mode and data so the tulip can talk 2215 * to the MII. This needs to be done before mii_phy_probe so that 2216 * we can actually see them. 2217 */ 2218 if (DC_IS_XIRCOM(sc)) { 2219 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN | 2220 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 2221 DELAY(10); 2222 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN | 2223 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 2224 DELAY(10); 2225 } 2226 2227 error = mii_phy_probe(dev, &sc->dc_miibus, 2228 dc_ifmedia_upd, dc_ifmedia_sts); 2229 2230 if (error && DC_IS_INTEL(sc)) { 2231 sc->dc_pmode = tmp; 2232 if (sc->dc_pmode != DC_PMODE_SIA) 2233 sc->dc_pmode = DC_PMODE_SYM; 2234 sc->dc_flags |= DC_21143_NWAY; 2235 mii_phy_probe(dev, &sc->dc_miibus, 2236 dc_ifmedia_upd, dc_ifmedia_sts); 2237 /* 2238 * For non-MII cards, we need to have the 21143 2239 * drive the LEDs. Except there are some systems 2240 * like the NEC VersaPro NoteBook PC which have no 2241 * LEDs, and twiddling these bits has adverse effects 2242 * on them. (I.e. you suddenly can't get a link.) 2243 */ 2244 if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033) 2245 sc->dc_flags |= DC_TULIP_LEDS; 2246 error = 0; 2247 } 2248 2249 if (error) { 2250 printf("dc%d: MII without any PHY!\n", sc->dc_unit); 2251 goto fail; 2252 } 2253 2254 if (DC_IS_ADMTEK(sc)) { 2255 /* 2256 * Set automatic TX underrun recovery for the ADMtek chips 2257 */ 2258 DC_SETBIT(sc, DC_AL_CR, DC_AL_CR_ATUR); 2259 } 2260 2261 /* 2262 * Tell the upper layer(s) we support long frames. 2263 */ 2264 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 2265 ifp->if_capabilities |= IFCAP_VLAN_MTU; 2266 #ifdef DEVICE_POLLING 2267 ifp->if_capabilities |= IFCAP_POLLING; 2268 #endif 2269 ifp->if_capenable = ifp->if_capabilities; 2270 2271 callout_init(&sc->dc_stat_ch, IS_MPSAFE ? CALLOUT_MPSAFE : 0); 2272 2273 #ifdef SRM_MEDIA 2274 sc->dc_srm_media = 0; 2275 2276 /* Remember the SRM console media setting */ 2277 if (DC_IS_INTEL(sc)) { 2278 command = pci_read_config(dev, DC_PCI_CFDD, 4); 2279 command &= ~(DC_CFDD_SNOOZE_MODE | DC_CFDD_SLEEP_MODE); 2280 switch ((command >> 8) & 0xff) { 2281 case 3: 2282 sc->dc_srm_media = IFM_10_T; 2283 break; 2284 case 4: 2285 sc->dc_srm_media = IFM_10_T | IFM_FDX; 2286 break; 2287 case 5: 2288 sc->dc_srm_media = IFM_100_TX; 2289 break; 2290 case 6: 2291 sc->dc_srm_media = IFM_100_TX | IFM_FDX; 2292 break; 2293 } 2294 if (sc->dc_srm_media) 2295 sc->dc_srm_media |= IFM_ACTIVE | IFM_ETHER; 2296 } 2297 #endif 2298 2299 /* 2300 * Call MI attach routine. 2301 */ 2302 ether_ifattach(ifp, eaddr); 2303 2304 /* Hook interrupt last to avoid having to lock softc */ 2305 error = bus_setup_intr(dev, sc->dc_irq, INTR_TYPE_NET | 2306 (IS_MPSAFE ? INTR_MPSAFE : 0), 2307 dc_intr, sc, &sc->dc_intrhand); 2308 2309 if (error) { 2310 printf("dc%d: couldn't set up irq\n", unit); 2311 ether_ifdetach(ifp); 2312 goto fail; 2313 } 2314 2315 fail: 2316 if (error) 2317 dc_detach(dev); 2318 return (error); 2319 } 2320 2321 /* 2322 * Shutdown hardware and free up resources. This can be called any 2323 * time after the mutex has been initialized. It is called in both 2324 * the error case in attach and the normal detach case so it needs 2325 * to be careful about only freeing resources that have actually been 2326 * allocated. 2327 */ 2328 static int 2329 dc_detach(device_t dev) 2330 { 2331 struct dc_softc *sc; 2332 struct ifnet *ifp; 2333 struct dc_mediainfo *m; 2334 int i; 2335 2336 sc = device_get_softc(dev); 2337 KASSERT(mtx_initialized(&sc->dc_mtx), ("dc mutex not initialized")); 2338 DC_LOCK(sc); 2339 2340 ifp = &sc->arpcom.ac_if; 2341 2342 /* These should only be active if attach succeeded */ 2343 if (device_is_attached(dev)) { 2344 dc_stop(sc); 2345 ether_ifdetach(ifp); 2346 } 2347 if (sc->dc_miibus) 2348 device_delete_child(dev, sc->dc_miibus); 2349 bus_generic_detach(dev); 2350 2351 if (sc->dc_intrhand) 2352 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand); 2353 if (sc->dc_irq) 2354 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq); 2355 if (sc->dc_res) 2356 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); 2357 2358 if (sc->dc_cdata.dc_sbuf != NULL) 2359 bus_dmamem_free(sc->dc_stag, sc->dc_cdata.dc_sbuf, sc->dc_smap); 2360 if (sc->dc_ldata != NULL) 2361 bus_dmamem_free(sc->dc_ltag, sc->dc_ldata, sc->dc_lmap); 2362 for (i = 0; i < DC_TX_LIST_CNT; i++) 2363 bus_dmamap_destroy(sc->dc_mtag, sc->dc_cdata.dc_tx_map[i]); 2364 for (i = 0; i < DC_RX_LIST_CNT; i++) 2365 bus_dmamap_destroy(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i]); 2366 bus_dmamap_destroy(sc->dc_mtag, sc->dc_sparemap); 2367 if (sc->dc_stag) 2368 bus_dma_tag_destroy(sc->dc_stag); 2369 if (sc->dc_mtag) 2370 bus_dma_tag_destroy(sc->dc_mtag); 2371 if (sc->dc_ltag) 2372 bus_dma_tag_destroy(sc->dc_ltag); 2373 2374 free(sc->dc_pnic_rx_buf, M_DEVBUF); 2375 2376 while (sc->dc_mi != NULL) { 2377 m = sc->dc_mi->dc_next; 2378 free(sc->dc_mi, M_DEVBUF); 2379 sc->dc_mi = m; 2380 } 2381 free(sc->dc_srom, M_DEVBUF); 2382 2383 DC_UNLOCK(sc); 2384 mtx_destroy(&sc->dc_mtx); 2385 2386 return (0); 2387 } 2388 2389 /* 2390 * Initialize the transmit descriptors. 2391 */ 2392 static int 2393 dc_list_tx_init(struct dc_softc *sc) 2394 { 2395 struct dc_chain_data *cd; 2396 struct dc_list_data *ld; 2397 int i, nexti; 2398 2399 cd = &sc->dc_cdata; 2400 ld = sc->dc_ldata; 2401 for (i = 0; i < DC_TX_LIST_CNT; i++) { 2402 if (i == DC_TX_LIST_CNT - 1) 2403 nexti = 0; 2404 else 2405 nexti = i + 1; 2406 ld->dc_tx_list[i].dc_next = htole32(DC_TXDESC(sc, nexti)); 2407 cd->dc_tx_chain[i] = NULL; 2408 ld->dc_tx_list[i].dc_data = 0; 2409 ld->dc_tx_list[i].dc_ctl = 0; 2410 } 2411 2412 cd->dc_tx_prod = cd->dc_tx_cons = cd->dc_tx_cnt = 0; 2413 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2414 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2415 return (0); 2416 } 2417 2418 2419 /* 2420 * Initialize the RX descriptors and allocate mbufs for them. Note that 2421 * we arrange the descriptors in a closed ring, so that the last descriptor 2422 * points back to the first. 2423 */ 2424 static int 2425 dc_list_rx_init(struct dc_softc *sc) 2426 { 2427 struct dc_chain_data *cd; 2428 struct dc_list_data *ld; 2429 int i, nexti; 2430 2431 cd = &sc->dc_cdata; 2432 ld = sc->dc_ldata; 2433 2434 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2435 if (dc_newbuf(sc, i, 1) != 0) 2436 return (ENOBUFS); 2437 if (i == DC_RX_LIST_CNT - 1) 2438 nexti = 0; 2439 else 2440 nexti = i + 1; 2441 ld->dc_rx_list[i].dc_next = htole32(DC_RXDESC(sc, nexti)); 2442 } 2443 2444 cd->dc_rx_prod = 0; 2445 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2446 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2447 return (0); 2448 } 2449 2450 static void 2451 dc_dma_map_rxbuf(arg, segs, nseg, mapsize, error) 2452 void *arg; 2453 bus_dma_segment_t *segs; 2454 int nseg; 2455 bus_size_t mapsize; 2456 int error; 2457 { 2458 struct dc_softc *sc; 2459 struct dc_desc *c; 2460 2461 sc = arg; 2462 c = &sc->dc_ldata->dc_rx_list[sc->dc_cdata.dc_rx_cur]; 2463 if (error) { 2464 sc->dc_cdata.dc_rx_err = error; 2465 return; 2466 } 2467 2468 KASSERT(nseg == 1, ("wrong number of segments, should be 1")); 2469 sc->dc_cdata.dc_rx_err = 0; 2470 c->dc_data = htole32(segs->ds_addr); 2471 } 2472 2473 /* 2474 * Initialize an RX descriptor and attach an MBUF cluster. 2475 */ 2476 static int 2477 dc_newbuf(struct dc_softc *sc, int i, int alloc) 2478 { 2479 struct mbuf *m_new; 2480 bus_dmamap_t tmp; 2481 int error; 2482 2483 if (alloc) { 2484 m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2485 if (m_new == NULL) 2486 return (ENOBUFS); 2487 } else { 2488 m_new = sc->dc_cdata.dc_rx_chain[i]; 2489 m_new->m_data = m_new->m_ext.ext_buf; 2490 } 2491 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 2492 m_adj(m_new, sizeof(u_int64_t)); 2493 2494 /* 2495 * If this is a PNIC chip, zero the buffer. This is part 2496 * of the workaround for the receive bug in the 82c168 and 2497 * 82c169 chips. 2498 */ 2499 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) 2500 bzero(mtod(m_new, char *), m_new->m_len); 2501 2502 /* No need to remap the mbuf if we're reusing it. */ 2503 if (alloc) { 2504 sc->dc_cdata.dc_rx_cur = i; 2505 error = bus_dmamap_load_mbuf(sc->dc_mtag, sc->dc_sparemap, 2506 m_new, dc_dma_map_rxbuf, sc, 0); 2507 if (error) { 2508 m_freem(m_new); 2509 return (error); 2510 } 2511 if (sc->dc_cdata.dc_rx_err != 0) { 2512 m_freem(m_new); 2513 return (sc->dc_cdata.dc_rx_err); 2514 } 2515 bus_dmamap_unload(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i]); 2516 tmp = sc->dc_cdata.dc_rx_map[i]; 2517 sc->dc_cdata.dc_rx_map[i] = sc->dc_sparemap; 2518 sc->dc_sparemap = tmp; 2519 sc->dc_cdata.dc_rx_chain[i] = m_new; 2520 } 2521 2522 sc->dc_ldata->dc_rx_list[i].dc_ctl = htole32(DC_RXCTL_RLINK | DC_RXLEN); 2523 sc->dc_ldata->dc_rx_list[i].dc_status = htole32(DC_RXSTAT_OWN); 2524 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i], 2525 BUS_DMASYNC_PREREAD); 2526 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2527 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2528 return (0); 2529 } 2530 2531 /* 2532 * Grrrrr. 2533 * The PNIC chip has a terrible bug in it that manifests itself during 2534 * periods of heavy activity. The exact mode of failure if difficult to 2535 * pinpoint: sometimes it only happens in promiscuous mode, sometimes it 2536 * will happen on slow machines. The bug is that sometimes instead of 2537 * uploading one complete frame during reception, it uploads what looks 2538 * like the entire contents of its FIFO memory. The frame we want is at 2539 * the end of the whole mess, but we never know exactly how much data has 2540 * been uploaded, so salvaging the frame is hard. 2541 * 2542 * There is only one way to do it reliably, and it's disgusting. 2543 * Here's what we know: 2544 * 2545 * - We know there will always be somewhere between one and three extra 2546 * descriptors uploaded. 2547 * 2548 * - We know the desired received frame will always be at the end of the 2549 * total data upload. 2550 * 2551 * - We know the size of the desired received frame because it will be 2552 * provided in the length field of the status word in the last descriptor. 2553 * 2554 * Here's what we do: 2555 * 2556 * - When we allocate buffers for the receive ring, we bzero() them. 2557 * This means that we know that the buffer contents should be all 2558 * zeros, except for data uploaded by the chip. 2559 * 2560 * - We also force the PNIC chip to upload frames that include the 2561 * ethernet CRC at the end. 2562 * 2563 * - We gather all of the bogus frame data into a single buffer. 2564 * 2565 * - We then position a pointer at the end of this buffer and scan 2566 * backwards until we encounter the first non-zero byte of data. 2567 * This is the end of the received frame. We know we will encounter 2568 * some data at the end of the frame because the CRC will always be 2569 * there, so even if the sender transmits a packet of all zeros, 2570 * we won't be fooled. 2571 * 2572 * - We know the size of the actual received frame, so we subtract 2573 * that value from the current pointer location. This brings us 2574 * to the start of the actual received packet. 2575 * 2576 * - We copy this into an mbuf and pass it on, along with the actual 2577 * frame length. 2578 * 2579 * The performance hit is tremendous, but it beats dropping frames all 2580 * the time. 2581 */ 2582 2583 #define DC_WHOLEFRAME (DC_RXSTAT_FIRSTFRAG | DC_RXSTAT_LASTFRAG) 2584 static void 2585 dc_pnic_rx_bug_war(struct dc_softc *sc, int idx) 2586 { 2587 struct dc_desc *cur_rx; 2588 struct dc_desc *c = NULL; 2589 struct mbuf *m = NULL; 2590 unsigned char *ptr; 2591 int i, total_len; 2592 u_int32_t rxstat = 0; 2593 2594 i = sc->dc_pnic_rx_bug_save; 2595 cur_rx = &sc->dc_ldata->dc_rx_list[idx]; 2596 ptr = sc->dc_pnic_rx_buf; 2597 bzero(ptr, DC_RXLEN * 5); 2598 2599 /* Copy all the bytes from the bogus buffers. */ 2600 while (1) { 2601 c = &sc->dc_ldata->dc_rx_list[i]; 2602 rxstat = le32toh(c->dc_status); 2603 m = sc->dc_cdata.dc_rx_chain[i]; 2604 bcopy(mtod(m, char *), ptr, DC_RXLEN); 2605 ptr += DC_RXLEN; 2606 /* If this is the last buffer, break out. */ 2607 if (i == idx || rxstat & DC_RXSTAT_LASTFRAG) 2608 break; 2609 dc_newbuf(sc, i, 0); 2610 DC_INC(i, DC_RX_LIST_CNT); 2611 } 2612 2613 /* Find the length of the actual receive frame. */ 2614 total_len = DC_RXBYTES(rxstat); 2615 2616 /* Scan backwards until we hit a non-zero byte. */ 2617 while (*ptr == 0x00) 2618 ptr--; 2619 2620 /* Round off. */ 2621 if ((uintptr_t)(ptr) & 0x3) 2622 ptr -= 1; 2623 2624 /* Now find the start of the frame. */ 2625 ptr -= total_len; 2626 if (ptr < sc->dc_pnic_rx_buf) 2627 ptr = sc->dc_pnic_rx_buf; 2628 2629 /* 2630 * Now copy the salvaged frame to the last mbuf and fake up 2631 * the status word to make it look like a successful 2632 * frame reception. 2633 */ 2634 dc_newbuf(sc, i, 0); 2635 bcopy(ptr, mtod(m, char *), total_len); 2636 cur_rx->dc_status = htole32(rxstat | DC_RXSTAT_FIRSTFRAG); 2637 } 2638 2639 /* 2640 * This routine searches the RX ring for dirty descriptors in the 2641 * event that the rxeof routine falls out of sync with the chip's 2642 * current descriptor pointer. This may happen sometimes as a result 2643 * of a "no RX buffer available" condition that happens when the chip 2644 * consumes all of the RX buffers before the driver has a chance to 2645 * process the RX ring. This routine may need to be called more than 2646 * once to bring the driver back in sync with the chip, however we 2647 * should still be getting RX DONE interrupts to drive the search 2648 * for new packets in the RX ring, so we should catch up eventually. 2649 */ 2650 static int 2651 dc_rx_resync(struct dc_softc *sc) 2652 { 2653 struct dc_desc *cur_rx; 2654 int i, pos; 2655 2656 pos = sc->dc_cdata.dc_rx_prod; 2657 2658 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2659 cur_rx = &sc->dc_ldata->dc_rx_list[pos]; 2660 if (!(le32toh(cur_rx->dc_status) & DC_RXSTAT_OWN)) 2661 break; 2662 DC_INC(pos, DC_RX_LIST_CNT); 2663 } 2664 2665 /* If the ring really is empty, then just return. */ 2666 if (i == DC_RX_LIST_CNT) 2667 return (0); 2668 2669 /* We've fallen behing the chip: catch it. */ 2670 sc->dc_cdata.dc_rx_prod = pos; 2671 2672 return (EAGAIN); 2673 } 2674 2675 /* 2676 * A frame has been uploaded: pass the resulting mbuf chain up to 2677 * the higher level protocols. 2678 */ 2679 static void 2680 dc_rxeof(struct dc_softc *sc) 2681 { 2682 struct mbuf *m; 2683 struct ifnet *ifp; 2684 struct dc_desc *cur_rx; 2685 int i, total_len = 0; 2686 u_int32_t rxstat; 2687 2688 DC_LOCK_ASSERT(sc); 2689 2690 ifp = &sc->arpcom.ac_if; 2691 i = sc->dc_cdata.dc_rx_prod; 2692 2693 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, BUS_DMASYNC_POSTREAD); 2694 while (!(le32toh(sc->dc_ldata->dc_rx_list[i].dc_status) & 2695 DC_RXSTAT_OWN)) { 2696 #ifdef DEVICE_POLLING 2697 if (ifp->if_flags & IFF_POLLING) { 2698 if (sc->rxcycles <= 0) 2699 break; 2700 sc->rxcycles--; 2701 } 2702 #endif 2703 cur_rx = &sc->dc_ldata->dc_rx_list[i]; 2704 rxstat = le32toh(cur_rx->dc_status); 2705 m = sc->dc_cdata.dc_rx_chain[i]; 2706 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i], 2707 BUS_DMASYNC_POSTREAD); 2708 total_len = DC_RXBYTES(rxstat); 2709 2710 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) { 2711 if ((rxstat & DC_WHOLEFRAME) != DC_WHOLEFRAME) { 2712 if (rxstat & DC_RXSTAT_FIRSTFRAG) 2713 sc->dc_pnic_rx_bug_save = i; 2714 if ((rxstat & DC_RXSTAT_LASTFRAG) == 0) { 2715 DC_INC(i, DC_RX_LIST_CNT); 2716 continue; 2717 } 2718 dc_pnic_rx_bug_war(sc, i); 2719 rxstat = le32toh(cur_rx->dc_status); 2720 total_len = DC_RXBYTES(rxstat); 2721 } 2722 } 2723 2724 /* 2725 * If an error occurs, update stats, clear the 2726 * status word and leave the mbuf cluster in place: 2727 * it should simply get re-used next time this descriptor 2728 * comes up in the ring. However, don't report long 2729 * frames as errors since they could be vlans. 2730 */ 2731 if ((rxstat & DC_RXSTAT_RXERR)) { 2732 if (!(rxstat & DC_RXSTAT_GIANT) || 2733 (rxstat & (DC_RXSTAT_CRCERR | DC_RXSTAT_DRIBBLE | 2734 DC_RXSTAT_MIIERE | DC_RXSTAT_COLLSEEN | 2735 DC_RXSTAT_RUNT | DC_RXSTAT_DE))) { 2736 ifp->if_ierrors++; 2737 if (rxstat & DC_RXSTAT_COLLSEEN) 2738 ifp->if_collisions++; 2739 dc_newbuf(sc, i, 0); 2740 if (rxstat & DC_RXSTAT_CRCERR) { 2741 DC_INC(i, DC_RX_LIST_CNT); 2742 continue; 2743 } else { 2744 dc_init(sc); 2745 return; 2746 } 2747 } 2748 } 2749 2750 /* No errors; receive the packet. */ 2751 total_len -= ETHER_CRC_LEN; 2752 #ifdef __i386__ 2753 /* 2754 * On the x86 we do not have alignment problems, so try to 2755 * allocate a new buffer for the receive ring, and pass up 2756 * the one where the packet is already, saving the expensive 2757 * copy done in m_devget(). 2758 * If we are on an architecture with alignment problems, or 2759 * if the allocation fails, then use m_devget and leave the 2760 * existing buffer in the receive ring. 2761 */ 2762 if (dc_quick && dc_newbuf(sc, i, 1) == 0) { 2763 m->m_pkthdr.rcvif = ifp; 2764 m->m_pkthdr.len = m->m_len = total_len; 2765 DC_INC(i, DC_RX_LIST_CNT); 2766 } else 2767 #endif 2768 { 2769 struct mbuf *m0; 2770 2771 m0 = m_devget(mtod(m, char *), total_len, 2772 ETHER_ALIGN, ifp, NULL); 2773 dc_newbuf(sc, i, 0); 2774 DC_INC(i, DC_RX_LIST_CNT); 2775 if (m0 == NULL) { 2776 ifp->if_ierrors++; 2777 continue; 2778 } 2779 m = m0; 2780 } 2781 2782 ifp->if_ipackets++; 2783 DC_UNLOCK(sc); 2784 (*ifp->if_input)(ifp, m); 2785 DC_LOCK(sc); 2786 } 2787 2788 sc->dc_cdata.dc_rx_prod = i; 2789 } 2790 2791 /* 2792 * A frame was downloaded to the chip. It's safe for us to clean up 2793 * the list buffers. 2794 */ 2795 2796 static void 2797 dc_txeof(struct dc_softc *sc) 2798 { 2799 struct dc_desc *cur_tx = NULL; 2800 struct ifnet *ifp; 2801 int idx; 2802 u_int32_t ctl, txstat; 2803 2804 ifp = &sc->arpcom.ac_if; 2805 2806 /* 2807 * Go through our tx list and free mbufs for those 2808 * frames that have been transmitted. 2809 */ 2810 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, BUS_DMASYNC_POSTREAD); 2811 idx = sc->dc_cdata.dc_tx_cons; 2812 while (idx != sc->dc_cdata.dc_tx_prod) { 2813 2814 cur_tx = &sc->dc_ldata->dc_tx_list[idx]; 2815 txstat = le32toh(cur_tx->dc_status); 2816 ctl = le32toh(cur_tx->dc_ctl); 2817 2818 if (txstat & DC_TXSTAT_OWN) 2819 break; 2820 2821 if (!(ctl & DC_TXCTL_LASTFRAG) || ctl & DC_TXCTL_SETUP) { 2822 if (ctl & DC_TXCTL_SETUP) { 2823 /* 2824 * Yes, the PNIC is so brain damaged 2825 * that it will sometimes generate a TX 2826 * underrun error while DMAing the RX 2827 * filter setup frame. If we detect this, 2828 * we have to send the setup frame again, 2829 * or else the filter won't be programmed 2830 * correctly. 2831 */ 2832 if (DC_IS_PNIC(sc)) { 2833 if (txstat & DC_TXSTAT_ERRSUM) 2834 dc_setfilt(sc); 2835 } 2836 sc->dc_cdata.dc_tx_chain[idx] = NULL; 2837 } 2838 sc->dc_cdata.dc_tx_cnt--; 2839 DC_INC(idx, DC_TX_LIST_CNT); 2840 continue; 2841 } 2842 2843 if (DC_IS_XIRCOM(sc) || DC_IS_CONEXANT(sc)) { 2844 /* 2845 * XXX: Why does my Xircom taunt me so? 2846 * For some reason it likes setting the CARRLOST flag 2847 * even when the carrier is there. wtf?!? 2848 * Who knows, but Conexant chips have the 2849 * same problem. Maybe they took lessons 2850 * from Xircom. 2851 */ 2852 if (/*sc->dc_type == DC_TYPE_21143 &&*/ 2853 sc->dc_pmode == DC_PMODE_MII && 2854 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM | 2855 DC_TXSTAT_NOCARRIER))) 2856 txstat &= ~DC_TXSTAT_ERRSUM; 2857 } else { 2858 if (/*sc->dc_type == DC_TYPE_21143 &&*/ 2859 sc->dc_pmode == DC_PMODE_MII && 2860 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM | 2861 DC_TXSTAT_NOCARRIER | DC_TXSTAT_CARRLOST))) 2862 txstat &= ~DC_TXSTAT_ERRSUM; 2863 } 2864 2865 if (txstat & DC_TXSTAT_ERRSUM) { 2866 ifp->if_oerrors++; 2867 if (txstat & DC_TXSTAT_EXCESSCOLL) 2868 ifp->if_collisions++; 2869 if (txstat & DC_TXSTAT_LATECOLL) 2870 ifp->if_collisions++; 2871 if (!(txstat & DC_TXSTAT_UNDERRUN)) { 2872 dc_init(sc); 2873 return; 2874 } 2875 } 2876 2877 ifp->if_collisions += (txstat & DC_TXSTAT_COLLCNT) >> 3; 2878 2879 ifp->if_opackets++; 2880 if (sc->dc_cdata.dc_tx_chain[idx] != NULL) { 2881 bus_dmamap_sync(sc->dc_mtag, 2882 sc->dc_cdata.dc_tx_map[idx], 2883 BUS_DMASYNC_POSTWRITE); 2884 bus_dmamap_unload(sc->dc_mtag, 2885 sc->dc_cdata.dc_tx_map[idx]); 2886 m_freem(sc->dc_cdata.dc_tx_chain[idx]); 2887 sc->dc_cdata.dc_tx_chain[idx] = NULL; 2888 } 2889 2890 sc->dc_cdata.dc_tx_cnt--; 2891 DC_INC(idx, DC_TX_LIST_CNT); 2892 } 2893 2894 if (idx != sc->dc_cdata.dc_tx_cons) { 2895 /* Some buffers have been freed. */ 2896 sc->dc_cdata.dc_tx_cons = idx; 2897 ifp->if_flags &= ~IFF_OACTIVE; 2898 } 2899 ifp->if_timer = (sc->dc_cdata.dc_tx_cnt == 0) ? 0 : 5; 2900 } 2901 2902 static void 2903 dc_tick(void *xsc) 2904 { 2905 struct dc_softc *sc; 2906 struct mii_data *mii; 2907 struct ifnet *ifp; 2908 u_int32_t r; 2909 2910 sc = xsc; 2911 DC_LOCK(sc); 2912 ifp = &sc->arpcom.ac_if; 2913 mii = device_get_softc(sc->dc_miibus); 2914 2915 if (sc->dc_flags & DC_REDUCED_MII_POLL) { 2916 if (sc->dc_flags & DC_21143_NWAY) { 2917 r = CSR_READ_4(sc, DC_10BTSTAT); 2918 if (IFM_SUBTYPE(mii->mii_media_active) == 2919 IFM_100_TX && (r & DC_TSTAT_LS100)) { 2920 sc->dc_link = 0; 2921 mii_mediachg(mii); 2922 } 2923 if (IFM_SUBTYPE(mii->mii_media_active) == 2924 IFM_10_T && (r & DC_TSTAT_LS10)) { 2925 sc->dc_link = 0; 2926 mii_mediachg(mii); 2927 } 2928 if (sc->dc_link == 0) 2929 mii_tick(mii); 2930 } else { 2931 r = CSR_READ_4(sc, DC_ISR); 2932 if ((r & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT && 2933 sc->dc_cdata.dc_tx_cnt == 0) { 2934 mii_tick(mii); 2935 if (!(mii->mii_media_status & IFM_ACTIVE)) 2936 sc->dc_link = 0; 2937 } 2938 } 2939 } else 2940 mii_tick(mii); 2941 2942 /* 2943 * When the init routine completes, we expect to be able to send 2944 * packets right away, and in fact the network code will send a 2945 * gratuitous ARP the moment the init routine marks the interface 2946 * as running. However, even though the MAC may have been initialized, 2947 * there may be a delay of a few seconds before the PHY completes 2948 * autonegotiation and the link is brought up. Any transmissions 2949 * made during that delay will be lost. Dealing with this is tricky: 2950 * we can't just pause in the init routine while waiting for the 2951 * PHY to come ready since that would bring the whole system to 2952 * a screeching halt for several seconds. 2953 * 2954 * What we do here is prevent the TX start routine from sending 2955 * any packets until a link has been established. After the 2956 * interface has been initialized, the tick routine will poll 2957 * the state of the PHY until the IFM_ACTIVE flag is set. Until 2958 * that time, packets will stay in the send queue, and once the 2959 * link comes up, they will be flushed out to the wire. 2960 */ 2961 if (!sc->dc_link && mii->mii_media_status & IFM_ACTIVE && 2962 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 2963 sc->dc_link++; 2964 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 2965 dc_start(ifp); 2966 } 2967 2968 if (sc->dc_flags & DC_21143_NWAY && !sc->dc_link) 2969 callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc); 2970 else 2971 callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc); 2972 2973 DC_UNLOCK(sc); 2974 } 2975 2976 /* 2977 * A transmit underrun has occurred. Back off the transmit threshold, 2978 * or switch to store and forward mode if we have to. 2979 */ 2980 static void 2981 dc_tx_underrun(struct dc_softc *sc) 2982 { 2983 u_int32_t isr; 2984 int i; 2985 2986 if (DC_IS_DAVICOM(sc)) 2987 dc_init(sc); 2988 2989 if (DC_IS_INTEL(sc)) { 2990 /* 2991 * The real 21143 requires that the transmitter be idle 2992 * in order to change the transmit threshold or store 2993 * and forward state. 2994 */ 2995 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 2996 2997 for (i = 0; i < DC_TIMEOUT; i++) { 2998 isr = CSR_READ_4(sc, DC_ISR); 2999 if (isr & DC_ISR_TX_IDLE) 3000 break; 3001 DELAY(10); 3002 } 3003 if (i == DC_TIMEOUT) { 3004 printf("dc%d: failed to force tx to idle state\n", 3005 sc->dc_unit); 3006 dc_init(sc); 3007 } 3008 } 3009 3010 printf("dc%d: TX underrun -- ", sc->dc_unit); 3011 sc->dc_txthresh += DC_TXTHRESH_INC; 3012 if (sc->dc_txthresh > DC_TXTHRESH_MAX) { 3013 printf("using store and forward mode\n"); 3014 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3015 } else { 3016 printf("increasing TX threshold\n"); 3017 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); 3018 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); 3019 } 3020 3021 if (DC_IS_INTEL(sc)) 3022 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3023 } 3024 3025 #ifdef DEVICE_POLLING 3026 static poll_handler_t dc_poll; 3027 3028 static void 3029 dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 3030 { 3031 struct dc_softc *sc = ifp->if_softc; 3032 3033 if (!(ifp->if_capenable & IFCAP_POLLING)) { 3034 ether_poll_deregister(ifp); 3035 cmd = POLL_DEREGISTER; 3036 } 3037 if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */ 3038 /* Re-enable interrupts. */ 3039 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3040 return; 3041 } 3042 DC_LOCK(sc); 3043 sc->rxcycles = count; 3044 dc_rxeof(sc); 3045 dc_txeof(sc); 3046 if (!IFQ_IS_EMPTY(&ifp->if_snd) && !(ifp->if_flags & IFF_OACTIVE)) 3047 dc_start(ifp); 3048 3049 if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */ 3050 u_int32_t status; 3051 3052 status = CSR_READ_4(sc, DC_ISR); 3053 status &= (DC_ISR_RX_WATDOGTIMEO | DC_ISR_RX_NOBUF | 3054 DC_ISR_TX_NOBUF | DC_ISR_TX_IDLE | DC_ISR_TX_UNDERRUN | 3055 DC_ISR_BUS_ERR); 3056 if (!status) { 3057 DC_UNLOCK(sc); 3058 return; 3059 } 3060 /* ack what we have */ 3061 CSR_WRITE_4(sc, DC_ISR, status); 3062 3063 if (status & (DC_ISR_RX_WATDOGTIMEO | DC_ISR_RX_NOBUF)) { 3064 u_int32_t r = CSR_READ_4(sc, DC_FRAMESDISCARDED); 3065 ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff); 3066 3067 if (dc_rx_resync(sc)) 3068 dc_rxeof(sc); 3069 } 3070 /* restart transmit unit if necessary */ 3071 if (status & DC_ISR_TX_IDLE && sc->dc_cdata.dc_tx_cnt) 3072 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3073 3074 if (status & DC_ISR_TX_UNDERRUN) 3075 dc_tx_underrun(sc); 3076 3077 if (status & DC_ISR_BUS_ERR) { 3078 printf("dc_poll: dc%d bus error\n", sc->dc_unit); 3079 dc_reset(sc); 3080 dc_init(sc); 3081 } 3082 } 3083 DC_UNLOCK(sc); 3084 } 3085 #endif /* DEVICE_POLLING */ 3086 3087 static void 3088 dc_intr(void *arg) 3089 { 3090 struct dc_softc *sc; 3091 struct ifnet *ifp; 3092 u_int32_t status; 3093 3094 sc = arg; 3095 3096 if (sc->suspended) 3097 return; 3098 3099 if ((CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0) 3100 return; 3101 3102 DC_LOCK(sc); 3103 ifp = &sc->arpcom.ac_if; 3104 #ifdef DEVICE_POLLING 3105 if (ifp->if_flags & IFF_POLLING) 3106 goto done; 3107 if ((ifp->if_capenable & IFCAP_POLLING) && 3108 ether_poll_register(dc_poll, ifp)) { /* ok, disable interrupts */ 3109 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3110 goto done; 3111 } 3112 #endif 3113 3114 /* Suppress unwanted interrupts */ 3115 if (!(ifp->if_flags & IFF_UP)) { 3116 if (CSR_READ_4(sc, DC_ISR) & DC_INTRS) 3117 dc_stop(sc); 3118 DC_UNLOCK(sc); 3119 return; 3120 } 3121 3122 /* Disable interrupts. */ 3123 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3124 3125 while (((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) 3126 && status != 0xFFFFFFFF) { 3127 3128 CSR_WRITE_4(sc, DC_ISR, status); 3129 3130 if (status & DC_ISR_RX_OK) { 3131 int curpkts; 3132 curpkts = ifp->if_ipackets; 3133 dc_rxeof(sc); 3134 if (curpkts == ifp->if_ipackets) { 3135 while (dc_rx_resync(sc)) 3136 dc_rxeof(sc); 3137 } 3138 } 3139 3140 if (status & (DC_ISR_TX_OK | DC_ISR_TX_NOBUF)) 3141 dc_txeof(sc); 3142 3143 if (status & DC_ISR_TX_IDLE) { 3144 dc_txeof(sc); 3145 if (sc->dc_cdata.dc_tx_cnt) { 3146 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3147 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3148 } 3149 } 3150 3151 if (status & DC_ISR_TX_UNDERRUN) 3152 dc_tx_underrun(sc); 3153 3154 if ((status & DC_ISR_RX_WATDOGTIMEO) 3155 || (status & DC_ISR_RX_NOBUF)) { 3156 int curpkts; 3157 curpkts = ifp->if_ipackets; 3158 dc_rxeof(sc); 3159 if (curpkts == ifp->if_ipackets) { 3160 while (dc_rx_resync(sc)) 3161 dc_rxeof(sc); 3162 } 3163 } 3164 3165 if (status & DC_ISR_BUS_ERR) { 3166 dc_reset(sc); 3167 dc_init(sc); 3168 } 3169 } 3170 3171 /* Re-enable interrupts. */ 3172 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3173 3174 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 3175 dc_start(ifp); 3176 3177 #ifdef DEVICE_POLLING 3178 done: 3179 #endif 3180 3181 DC_UNLOCK(sc); 3182 } 3183 3184 static void 3185 dc_dma_map_txbuf(arg, segs, nseg, mapsize, error) 3186 void *arg; 3187 bus_dma_segment_t *segs; 3188 int nseg; 3189 bus_size_t mapsize; 3190 int error; 3191 { 3192 struct dc_softc *sc; 3193 struct dc_desc *f; 3194 int cur, first, frag, i; 3195 3196 sc = arg; 3197 if (error) { 3198 sc->dc_cdata.dc_tx_err = error; 3199 return; 3200 } 3201 3202 first = cur = frag = sc->dc_cdata.dc_tx_prod; 3203 for (i = 0; i < nseg; i++) { 3204 if ((sc->dc_flags & DC_TX_ADMTEK_WAR) && 3205 (frag == (DC_TX_LIST_CNT - 1)) && 3206 (first != sc->dc_cdata.dc_tx_first)) { 3207 bus_dmamap_unload(sc->dc_mtag, 3208 sc->dc_cdata.dc_tx_map[first]); 3209 sc->dc_cdata.dc_tx_err = ENOBUFS; 3210 return; 3211 } 3212 3213 f = &sc->dc_ldata->dc_tx_list[frag]; 3214 f->dc_ctl = htole32(DC_TXCTL_TLINK | segs[i].ds_len); 3215 if (i == 0) { 3216 f->dc_status = 0; 3217 f->dc_ctl |= htole32(DC_TXCTL_FIRSTFRAG); 3218 } else 3219 f->dc_status = htole32(DC_TXSTAT_OWN); 3220 f->dc_data = htole32(segs[i].ds_addr); 3221 cur = frag; 3222 DC_INC(frag, DC_TX_LIST_CNT); 3223 } 3224 3225 sc->dc_cdata.dc_tx_err = 0; 3226 sc->dc_cdata.dc_tx_prod = frag; 3227 sc->dc_cdata.dc_tx_cnt += nseg; 3228 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_LASTFRAG); 3229 sc->dc_cdata.dc_tx_chain[cur] = sc->dc_cdata.dc_tx_mapping; 3230 if (sc->dc_flags & DC_TX_INTR_FIRSTFRAG) 3231 sc->dc_ldata->dc_tx_list[first].dc_ctl |= 3232 htole32(DC_TXCTL_FINT); 3233 if (sc->dc_flags & DC_TX_INTR_ALWAYS) 3234 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_FINT); 3235 if (sc->dc_flags & DC_TX_USE_TX_INTR && sc->dc_cdata.dc_tx_cnt > 64) 3236 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_FINT); 3237 sc->dc_ldata->dc_tx_list[first].dc_status = htole32(DC_TXSTAT_OWN); 3238 } 3239 3240 /* 3241 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 3242 * pointers to the fragment pointers. 3243 */ 3244 static int 3245 dc_encap(struct dc_softc *sc, struct mbuf **m_head) 3246 { 3247 struct mbuf *m; 3248 int error, idx, chainlen = 0; 3249 3250 /* 3251 * If there's no way we can send any packets, return now. 3252 */ 3253 if (DC_TX_LIST_CNT - sc->dc_cdata.dc_tx_cnt < 6) 3254 return (ENOBUFS); 3255 3256 /* 3257 * Count the number of frags in this chain to see if 3258 * we need to m_defrag. Since the descriptor list is shared 3259 * by all packets, we'll m_defrag long chains so that they 3260 * do not use up the entire list, even if they would fit. 3261 */ 3262 for (m = *m_head; m != NULL; m = m->m_next) 3263 chainlen++; 3264 3265 if ((chainlen > DC_TX_LIST_CNT / 4) || 3266 ((DC_TX_LIST_CNT - (chainlen + sc->dc_cdata.dc_tx_cnt)) < 6)) { 3267 m = m_defrag(*m_head, M_DONTWAIT); 3268 if (m == NULL) 3269 return (ENOBUFS); 3270 *m_head = m; 3271 } 3272 3273 /* 3274 * Start packing the mbufs in this chain into 3275 * the fragment pointers. Stop when we run out 3276 * of fragments or hit the end of the mbuf chain. 3277 */ 3278 idx = sc->dc_cdata.dc_tx_prod; 3279 sc->dc_cdata.dc_tx_mapping = *m_head; 3280 error = bus_dmamap_load_mbuf(sc->dc_mtag, sc->dc_cdata.dc_tx_map[idx], 3281 *m_head, dc_dma_map_txbuf, sc, 0); 3282 if (error) 3283 return (error); 3284 if (sc->dc_cdata.dc_tx_err != 0) 3285 return (sc->dc_cdata.dc_tx_err); 3286 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_tx_map[idx], 3287 BUS_DMASYNC_PREWRITE); 3288 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 3289 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3290 return (0); 3291 } 3292 3293 /* 3294 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 3295 * to the mbuf data regions directly in the transmit lists. We also save a 3296 * copy of the pointers since the transmit list fragment pointers are 3297 * physical addresses. 3298 */ 3299 3300 static void 3301 dc_start(struct ifnet *ifp) 3302 { 3303 struct dc_softc *sc; 3304 struct mbuf *m_head = NULL, *m; 3305 unsigned int queued = 0; 3306 int idx; 3307 3308 sc = ifp->if_softc; 3309 3310 DC_LOCK(sc); 3311 3312 if (!sc->dc_link && ifp->if_snd.ifq_len < 10) { 3313 DC_UNLOCK(sc); 3314 return; 3315 } 3316 3317 if (ifp->if_flags & IFF_OACTIVE) { 3318 DC_UNLOCK(sc); 3319 return; 3320 } 3321 3322 idx = sc->dc_cdata.dc_tx_first = sc->dc_cdata.dc_tx_prod; 3323 3324 while (sc->dc_cdata.dc_tx_chain[idx] == NULL) { 3325 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 3326 if (m_head == NULL) 3327 break; 3328 3329 if (sc->dc_flags & DC_TX_COALESCE && 3330 (m_head->m_next != NULL || 3331 sc->dc_flags & DC_TX_ALIGN)) { 3332 m = m_defrag(m_head, M_DONTWAIT); 3333 if (m == NULL) { 3334 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 3335 ifp->if_flags |= IFF_OACTIVE; 3336 break; 3337 } else { 3338 m_head = m; 3339 } 3340 } 3341 3342 if (dc_encap(sc, &m_head)) { 3343 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 3344 ifp->if_flags |= IFF_OACTIVE; 3345 break; 3346 } 3347 idx = sc->dc_cdata.dc_tx_prod; 3348 3349 queued++; 3350 /* 3351 * If there's a BPF listener, bounce a copy of this frame 3352 * to him. 3353 */ 3354 BPF_MTAP(ifp, m_head); 3355 3356 if (sc->dc_flags & DC_TX_ONE) { 3357 ifp->if_flags |= IFF_OACTIVE; 3358 break; 3359 } 3360 } 3361 3362 if (queued > 0) { 3363 /* Transmit */ 3364 if (!(sc->dc_flags & DC_TX_POLL)) 3365 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3366 3367 /* 3368 * Set a timeout in case the chip goes out to lunch. 3369 */ 3370 ifp->if_timer = 5; 3371 } 3372 3373 DC_UNLOCK(sc); 3374 } 3375 3376 static void 3377 dc_init(void *xsc) 3378 { 3379 struct dc_softc *sc = xsc; 3380 struct ifnet *ifp = &sc->arpcom.ac_if; 3381 struct mii_data *mii; 3382 3383 DC_LOCK(sc); 3384 3385 mii = device_get_softc(sc->dc_miibus); 3386 3387 /* 3388 * Cancel pending I/O and free all RX/TX buffers. 3389 */ 3390 dc_stop(sc); 3391 dc_reset(sc); 3392 3393 /* 3394 * Set cache alignment and burst length. 3395 */ 3396 if (DC_IS_ASIX(sc) || DC_IS_DAVICOM(sc)) 3397 CSR_WRITE_4(sc, DC_BUSCTL, 0); 3398 else 3399 CSR_WRITE_4(sc, DC_BUSCTL, DC_BUSCTL_MRME | DC_BUSCTL_MRLE); 3400 /* 3401 * Evenly share the bus between receive and transmit process. 3402 */ 3403 if (DC_IS_INTEL(sc)) 3404 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_ARBITRATION); 3405 if (DC_IS_DAVICOM(sc) || DC_IS_INTEL(sc)) { 3406 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_USECA); 3407 } else { 3408 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_16LONG); 3409 } 3410 if (sc->dc_flags & DC_TX_POLL) 3411 DC_SETBIT(sc, DC_BUSCTL, DC_TXPOLL_1); 3412 switch(sc->dc_cachesize) { 3413 case 32: 3414 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_32LONG); 3415 break; 3416 case 16: 3417 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_16LONG); 3418 break; 3419 case 8: 3420 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_8LONG); 3421 break; 3422 case 0: 3423 default: 3424 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_NONE); 3425 break; 3426 } 3427 3428 if (sc->dc_flags & DC_TX_STORENFWD) 3429 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3430 else { 3431 if (sc->dc_txthresh > DC_TXTHRESH_MAX) { 3432 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3433 } else { 3434 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3435 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); 3436 } 3437 } 3438 3439 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_NO_RXCRC); 3440 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_BACKOFF); 3441 3442 if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 3443 /* 3444 * The app notes for the 98713 and 98715A say that 3445 * in order to have the chips operate properly, a magic 3446 * number must be written to CSR16. Macronix does not 3447 * document the meaning of these bits so there's no way 3448 * to know exactly what they do. The 98713 has a magic 3449 * number all its own; the rest all use a different one. 3450 */ 3451 DC_CLRBIT(sc, DC_MX_MAGICPACKET, 0xFFFF0000); 3452 if (sc->dc_type == DC_TYPE_98713) 3453 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98713); 3454 else 3455 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98715); 3456 } 3457 3458 if (DC_IS_XIRCOM(sc)) { 3459 /* 3460 * setup General Purpose Port mode and data so the tulip 3461 * can talk to the MII. 3462 */ 3463 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN | 3464 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 3465 DELAY(10); 3466 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN | 3467 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 3468 DELAY(10); 3469 } 3470 3471 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); 3472 DC_SETBIT(sc, DC_NETCFG, DC_TXTHRESH_MIN); 3473 3474 /* Init circular RX list. */ 3475 if (dc_list_rx_init(sc) == ENOBUFS) { 3476 printf("dc%d: initialization failed: no " 3477 "memory for rx buffers\n", sc->dc_unit); 3478 dc_stop(sc); 3479 DC_UNLOCK(sc); 3480 return; 3481 } 3482 3483 /* 3484 * Init TX descriptors. 3485 */ 3486 dc_list_tx_init(sc); 3487 3488 /* 3489 * Load the address of the RX list. 3490 */ 3491 CSR_WRITE_4(sc, DC_RXADDR, DC_RXDESC(sc, 0)); 3492 CSR_WRITE_4(sc, DC_TXADDR, DC_TXDESC(sc, 0)); 3493 3494 /* 3495 * Enable interrupts. 3496 */ 3497 #ifdef DEVICE_POLLING 3498 /* 3499 * ... but only if we are not polling, and make sure they are off in 3500 * the case of polling. Some cards (e.g. fxp) turn interrupts on 3501 * after a reset. 3502 */ 3503 if (ifp->if_flags & IFF_POLLING) 3504 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3505 else 3506 #endif 3507 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3508 CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF); 3509 3510 /* Enable transmitter. */ 3511 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3512 3513 /* 3514 * If this is an Intel 21143 and we're not using the 3515 * MII port, program the LED control pins so we get 3516 * link and activity indications. 3517 */ 3518 if (sc->dc_flags & DC_TULIP_LEDS) { 3519 CSR_WRITE_4(sc, DC_WATCHDOG, 3520 DC_WDOG_CTLWREN | DC_WDOG_LINK | DC_WDOG_ACTIVITY); 3521 CSR_WRITE_4(sc, DC_WATCHDOG, 0); 3522 } 3523 3524 /* 3525 * Load the RX/multicast filter. We do this sort of late 3526 * because the filter programming scheme on the 21143 and 3527 * some clones requires DMAing a setup frame via the TX 3528 * engine, and we need the transmitter enabled for that. 3529 */ 3530 dc_setfilt(sc); 3531 3532 /* Enable receiver. */ 3533 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); 3534 CSR_WRITE_4(sc, DC_RXSTART, 0xFFFFFFFF); 3535 3536 mii_mediachg(mii); 3537 dc_setcfg(sc, sc->dc_if_media); 3538 3539 ifp->if_flags |= IFF_RUNNING; 3540 ifp->if_flags &= ~IFF_OACTIVE; 3541 3542 /* Don't start the ticker if this is a homePNA link. */ 3543 if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1) 3544 sc->dc_link = 1; 3545 else { 3546 if (sc->dc_flags & DC_21143_NWAY) 3547 callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc); 3548 else 3549 callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc); 3550 } 3551 3552 #ifdef SRM_MEDIA 3553 if(sc->dc_srm_media) { 3554 struct ifreq ifr; 3555 3556 ifr.ifr_media = sc->dc_srm_media; 3557 ifmedia_ioctl(ifp, &ifr, &mii->mii_media, SIOCSIFMEDIA); 3558 sc->dc_srm_media = 0; 3559 } 3560 #endif 3561 DC_UNLOCK(sc); 3562 } 3563 3564 /* 3565 * Set media options. 3566 */ 3567 static int 3568 dc_ifmedia_upd(struct ifnet *ifp) 3569 { 3570 struct dc_softc *sc; 3571 struct mii_data *mii; 3572 struct ifmedia *ifm; 3573 3574 sc = ifp->if_softc; 3575 mii = device_get_softc(sc->dc_miibus); 3576 mii_mediachg(mii); 3577 ifm = &mii->mii_media; 3578 3579 if (DC_IS_DAVICOM(sc) && 3580 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) 3581 dc_setcfg(sc, ifm->ifm_media); 3582 else 3583 sc->dc_link = 0; 3584 3585 return (0); 3586 } 3587 3588 /* 3589 * Report current media status. 3590 */ 3591 static void 3592 dc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 3593 { 3594 struct dc_softc *sc; 3595 struct mii_data *mii; 3596 struct ifmedia *ifm; 3597 3598 sc = ifp->if_softc; 3599 mii = device_get_softc(sc->dc_miibus); 3600 mii_pollstat(mii); 3601 ifm = &mii->mii_media; 3602 if (DC_IS_DAVICOM(sc)) { 3603 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) { 3604 ifmr->ifm_active = ifm->ifm_media; 3605 ifmr->ifm_status = 0; 3606 return; 3607 } 3608 } 3609 ifmr->ifm_active = mii->mii_media_active; 3610 ifmr->ifm_status = mii->mii_media_status; 3611 } 3612 3613 static int 3614 dc_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 3615 { 3616 struct dc_softc *sc = ifp->if_softc; 3617 struct ifreq *ifr = (struct ifreq *)data; 3618 struct mii_data *mii; 3619 int error = 0; 3620 3621 DC_LOCK(sc); 3622 3623 switch (command) { 3624 case SIOCSIFFLAGS: 3625 if (ifp->if_flags & IFF_UP) { 3626 int need_setfilt = (ifp->if_flags ^ sc->dc_if_flags) & 3627 (IFF_PROMISC | IFF_ALLMULTI); 3628 3629 if (ifp->if_flags & IFF_RUNNING) { 3630 if (need_setfilt) 3631 dc_setfilt(sc); 3632 } else { 3633 sc->dc_txthresh = 0; 3634 dc_init(sc); 3635 } 3636 } else { 3637 if (ifp->if_flags & IFF_RUNNING) 3638 dc_stop(sc); 3639 } 3640 sc->dc_if_flags = ifp->if_flags; 3641 error = 0; 3642 break; 3643 case SIOCADDMULTI: 3644 case SIOCDELMULTI: 3645 dc_setfilt(sc); 3646 error = 0; 3647 break; 3648 case SIOCGIFMEDIA: 3649 case SIOCSIFMEDIA: 3650 mii = device_get_softc(sc->dc_miibus); 3651 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 3652 #ifdef SRM_MEDIA 3653 if (sc->dc_srm_media) 3654 sc->dc_srm_media = 0; 3655 #endif 3656 break; 3657 case SIOCSIFCAP: 3658 ifp->if_capenable &= ~IFCAP_POLLING; 3659 ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING; 3660 break; 3661 default: 3662 error = ether_ioctl(ifp, command, data); 3663 break; 3664 } 3665 3666 DC_UNLOCK(sc); 3667 3668 return (error); 3669 } 3670 3671 static void 3672 dc_watchdog(struct ifnet *ifp) 3673 { 3674 struct dc_softc *sc; 3675 3676 sc = ifp->if_softc; 3677 3678 DC_LOCK(sc); 3679 3680 ifp->if_oerrors++; 3681 printf("dc%d: watchdog timeout\n", sc->dc_unit); 3682 3683 dc_stop(sc); 3684 dc_reset(sc); 3685 dc_init(sc); 3686 3687 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 3688 dc_start(ifp); 3689 3690 DC_UNLOCK(sc); 3691 } 3692 3693 /* 3694 * Stop the adapter and free any mbufs allocated to the 3695 * RX and TX lists. 3696 */ 3697 static void 3698 dc_stop(struct dc_softc *sc) 3699 { 3700 struct ifnet *ifp; 3701 struct dc_list_data *ld; 3702 struct dc_chain_data *cd; 3703 int i; 3704 u_int32_t ctl; 3705 3706 DC_LOCK(sc); 3707 3708 ifp = &sc->arpcom.ac_if; 3709 ifp->if_timer = 0; 3710 ld = sc->dc_ldata; 3711 cd = &sc->dc_cdata; 3712 3713 callout_stop(&sc->dc_stat_ch); 3714 3715 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3716 #ifdef DEVICE_POLLING 3717 ether_poll_deregister(ifp); 3718 #endif 3719 3720 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON | DC_NETCFG_TX_ON)); 3721 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3722 CSR_WRITE_4(sc, DC_TXADDR, 0x00000000); 3723 CSR_WRITE_4(sc, DC_RXADDR, 0x00000000); 3724 sc->dc_link = 0; 3725 3726 /* 3727 * Free data in the RX lists. 3728 */ 3729 for (i = 0; i < DC_RX_LIST_CNT; i++) { 3730 if (cd->dc_rx_chain[i] != NULL) { 3731 m_freem(cd->dc_rx_chain[i]); 3732 cd->dc_rx_chain[i] = NULL; 3733 } 3734 } 3735 bzero(&ld->dc_rx_list, sizeof(ld->dc_rx_list)); 3736 3737 /* 3738 * Free the TX list buffers. 3739 */ 3740 for (i = 0; i < DC_TX_LIST_CNT; i++) { 3741 if (cd->dc_tx_chain[i] != NULL) { 3742 ctl = le32toh(ld->dc_tx_list[i].dc_ctl); 3743 if ((ctl & DC_TXCTL_SETUP) || 3744 !(ctl & DC_TXCTL_LASTFRAG)) { 3745 cd->dc_tx_chain[i] = NULL; 3746 continue; 3747 } 3748 bus_dmamap_unload(sc->dc_mtag, cd->dc_tx_map[i]); 3749 m_freem(cd->dc_tx_chain[i]); 3750 cd->dc_tx_chain[i] = NULL; 3751 } 3752 } 3753 bzero(&ld->dc_tx_list, sizeof(ld->dc_tx_list)); 3754 3755 DC_UNLOCK(sc); 3756 } 3757 3758 /* 3759 * Device suspend routine. Stop the interface and save some PCI 3760 * settings in case the BIOS doesn't restore them properly on 3761 * resume. 3762 */ 3763 static int 3764 dc_suspend(device_t dev) 3765 { 3766 struct dc_softc *sc; 3767 int s; 3768 3769 s = splimp(); 3770 3771 sc = device_get_softc(dev); 3772 dc_stop(sc); 3773 sc->suspended = 1; 3774 3775 splx(s); 3776 return (0); 3777 } 3778 3779 /* 3780 * Device resume routine. Restore some PCI settings in case the BIOS 3781 * doesn't, re-enable busmastering, and restart the interface if 3782 * appropriate. 3783 */ 3784 static int 3785 dc_resume(device_t dev) 3786 { 3787 struct dc_softc *sc; 3788 struct ifnet *ifp; 3789 int s; 3790 3791 s = splimp(); 3792 3793 sc = device_get_softc(dev); 3794 ifp = &sc->arpcom.ac_if; 3795 3796 /* reinitialize interface if necessary */ 3797 if (ifp->if_flags & IFF_UP) 3798 dc_init(sc); 3799 3800 sc->suspended = 0; 3801 3802 splx(s); 3803 return (0); 3804 } 3805 3806 /* 3807 * Stop all chip I/O so that the kernel's probe routines don't 3808 * get confused by errant DMAs when rebooting. 3809 */ 3810 static void 3811 dc_shutdown(device_t dev) 3812 { 3813 struct dc_softc *sc; 3814 3815 sc = device_get_softc(dev); 3816 3817 dc_stop(sc); 3818 } 3819