Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/pci/if_dc.c
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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: releng/5.4/sys/pci/if_dc.c 145945 2005-05-06 00:52:59Z scottl $"); 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_pio.h> 116 #include <machine/bus_memio.h> 117 #include <machine/bus.h> 118 #include <machine/resource.h> 119 #include <sys/bus.h> 120 #include <sys/rman.h> 121 122 #include <dev/mii/mii.h> 123 #include <dev/mii/miivar.h> 124 125 #include <dev/pci/pcireg.h> 126 #include <dev/pci/pcivar.h> 127 128 #define DC_USEIOSPACE 129 #ifdef __alpha__ 130 #define SRM_MEDIA 131 #endif 132 133 #include <pci/if_dcreg.h> 134 135 #ifdef __sparc64__ 136 #include <dev/ofw/openfirm.h> 137 #include <machine/ofw_machdep.h> 138 #endif 139 140 MODULE_DEPEND(dc, pci, 1, 1, 1); 141 MODULE_DEPEND(dc, ether, 1, 1, 1); 142 MODULE_DEPEND(dc, miibus, 1, 1, 1); 143 144 /* "controller miibus0" required. See GENERIC if you get errors here. */ 145 #include "miibus_if.h" 146 147 /* 148 * Various supported device vendors/types and their names. 149 */ 150 static struct dc_type dc_devs[] = { 151 { DC_VENDORID_DEC, DC_DEVICEID_21143, 152 "Intel 21143 10/100BaseTX" }, 153 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9009, 154 "Davicom DM9009 10/100BaseTX" }, 155 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100, 156 "Davicom DM9100 10/100BaseTX" }, 157 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102, 158 "Davicom DM9102 10/100BaseTX" }, 159 { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102, 160 "Davicom DM9102A 10/100BaseTX" }, 161 { DC_VENDORID_ADMTEK, DC_DEVICEID_AL981, 162 "ADMtek AL981 10/100BaseTX" }, 163 { DC_VENDORID_ADMTEK, DC_DEVICEID_AN985, 164 "ADMtek AN985 10/100BaseTX" }, 165 { DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9511, 166 "ADMtek ADM9511 10/100BaseTX" }, 167 { DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9513, 168 "ADMtek ADM9513 10/100BaseTX" }, 169 { DC_VENDORID_ADMTEK, DC_DEVICEID_FA511, 170 "Netgear FA511 10/100BaseTX" }, 171 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A, 172 "ASIX AX88140A 10/100BaseTX" }, 173 { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A, 174 "ASIX AX88141 10/100BaseTX" }, 175 { DC_VENDORID_MX, DC_DEVICEID_98713, 176 "Macronix 98713 10/100BaseTX" }, 177 { DC_VENDORID_MX, DC_DEVICEID_98713, 178 "Macronix 98713A 10/100BaseTX" }, 179 { DC_VENDORID_CP, DC_DEVICEID_98713_CP, 180 "Compex RL100-TX 10/100BaseTX" }, 181 { DC_VENDORID_CP, DC_DEVICEID_98713_CP, 182 "Compex RL100-TX 10/100BaseTX" }, 183 { DC_VENDORID_MX, DC_DEVICEID_987x5, 184 "Macronix 98715/98715A 10/100BaseTX" }, 185 { DC_VENDORID_MX, DC_DEVICEID_987x5, 186 "Macronix 98715AEC-C 10/100BaseTX" }, 187 { DC_VENDORID_MX, DC_DEVICEID_987x5, 188 "Macronix 98725 10/100BaseTX" }, 189 { DC_VENDORID_MX, DC_DEVICEID_98727, 190 "Macronix 98727/98732 10/100BaseTX" }, 191 { DC_VENDORID_LO, DC_DEVICEID_82C115, 192 "LC82C115 PNIC II 10/100BaseTX" }, 193 { DC_VENDORID_LO, DC_DEVICEID_82C168, 194 "82c168 PNIC 10/100BaseTX" }, 195 { DC_VENDORID_LO, DC_DEVICEID_82C168, 196 "82c169 PNIC 10/100BaseTX" }, 197 { DC_VENDORID_ACCTON, DC_DEVICEID_EN1217, 198 "Accton EN1217 10/100BaseTX" }, 199 { DC_VENDORID_ACCTON, DC_DEVICEID_EN2242, 200 "Accton EN2242 MiniPCI 10/100BaseTX" }, 201 { DC_VENDORID_XIRCOM, DC_DEVICEID_X3201, 202 "Xircom X3201 10/100BaseTX" }, 203 { DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500, 204 "Abocom FE2500 10/100BaseTX" }, 205 { DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500MX, 206 "Abocom FE2500MX 10/100BaseTX" }, 207 { DC_VENDORID_CONEXANT, DC_DEVICEID_RS7112, 208 "Conexant LANfinity MiniPCI 10/100BaseTX" }, 209 { DC_VENDORID_HAWKING, DC_DEVICEID_HAWKING_PN672TX, 210 "Hawking CB102 CardBus 10/100" }, 211 { DC_VENDORID_PLANEX, DC_DEVICEID_FNW3602T, 212 "PlaneX FNW-3602-T CardBus 10/100" }, 213 { DC_VENDORID_3COM, DC_DEVICEID_3CSOHOB, 214 "3Com OfficeConnect 10/100B" }, 215 { DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN120, 216 "Microsoft MN-120 CardBus 10/100" }, 217 { DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN130, 218 "Microsoft MN-130 10/100" }, 219 { DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN130_FAKE, 220 "Microsoft MN-130 10/100" }, 221 { 0, 0, NULL } 222 }; 223 224 static int dc_probe(device_t); 225 static int dc_attach(device_t); 226 static int dc_detach(device_t); 227 static int dc_suspend(device_t); 228 static int dc_resume(device_t); 229 static struct dc_type *dc_devtype(device_t); 230 static int dc_newbuf(struct dc_softc *, int, int); 231 static int dc_encap(struct dc_softc *, struct mbuf **); 232 static void dc_pnic_rx_bug_war(struct dc_softc *, int); 233 static int dc_rx_resync(struct dc_softc *); 234 static void dc_rxeof(struct dc_softc *); 235 static void dc_txeof(struct dc_softc *); 236 static void dc_tick(void *); 237 static void dc_tx_underrun(struct dc_softc *); 238 static void dc_intr(void *); 239 static void dc_start(struct ifnet *); 240 static int dc_ioctl(struct ifnet *, u_long, caddr_t); 241 static void dc_init(void *); 242 static void dc_stop(struct dc_softc *); 243 static void dc_watchdog(struct ifnet *); 244 static void dc_shutdown(device_t); 245 static int dc_ifmedia_upd(struct ifnet *); 246 static void dc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 247 248 static void dc_delay(struct dc_softc *); 249 static void dc_eeprom_idle(struct dc_softc *); 250 static void dc_eeprom_putbyte(struct dc_softc *, int); 251 static void dc_eeprom_getword(struct dc_softc *, int, u_int16_t *); 252 static void dc_eeprom_getword_pnic(struct dc_softc *, int, u_int16_t *); 253 static void dc_eeprom_getword_xircom(struct dc_softc *, int, u_int16_t *); 254 static void dc_eeprom_width(struct dc_softc *); 255 static void dc_read_eeprom(struct dc_softc *, caddr_t, int, int, int); 256 257 static void dc_mii_writebit(struct dc_softc *, int); 258 static int dc_mii_readbit(struct dc_softc *); 259 static void dc_mii_sync(struct dc_softc *); 260 static void dc_mii_send(struct dc_softc *, u_int32_t, int); 261 static int dc_mii_readreg(struct dc_softc *, struct dc_mii_frame *); 262 static int dc_mii_writereg(struct dc_softc *, struct dc_mii_frame *); 263 static int dc_miibus_readreg(device_t, int, int); 264 static int dc_miibus_writereg(device_t, int, int, int); 265 static void dc_miibus_statchg(device_t); 266 static void dc_miibus_mediainit(device_t); 267 268 static void dc_setcfg(struct dc_softc *, int); 269 static uint32_t dc_mchash_le(struct dc_softc *, const uint8_t *); 270 static uint32_t dc_mchash_be(const uint8_t *); 271 static void dc_setfilt_21143(struct dc_softc *); 272 static void dc_setfilt_asix(struct dc_softc *); 273 static void dc_setfilt_admtek(struct dc_softc *); 274 static void dc_setfilt_xircom(struct dc_softc *); 275 276 static void dc_setfilt(struct dc_softc *); 277 278 static void dc_reset(struct dc_softc *); 279 static int dc_list_rx_init(struct dc_softc *); 280 static int dc_list_tx_init(struct dc_softc *); 281 282 static void dc_read_srom(struct dc_softc *, int); 283 static void dc_parse_21143_srom(struct dc_softc *); 284 static void dc_decode_leaf_sia(struct dc_softc *, struct dc_eblock_sia *); 285 static void dc_decode_leaf_mii(struct dc_softc *, struct dc_eblock_mii *); 286 static void dc_decode_leaf_sym(struct dc_softc *, struct dc_eblock_sym *); 287 static void dc_apply_fixup(struct dc_softc *, int); 288 289 static void dc_dma_map_txbuf(void *, bus_dma_segment_t *, int, bus_size_t, int); 290 static void dc_dma_map_rxbuf(void *, bus_dma_segment_t *, int, bus_size_t, int); 291 292 #ifdef DC_USEIOSPACE 293 #define DC_RES SYS_RES_IOPORT 294 #define DC_RID DC_PCI_CFBIO 295 #else 296 #define DC_RES SYS_RES_MEMORY 297 #define DC_RID DC_PCI_CFBMA 298 #endif 299 300 static device_method_t dc_methods[] = { 301 /* Device interface */ 302 DEVMETHOD(device_probe, dc_probe), 303 DEVMETHOD(device_attach, dc_attach), 304 DEVMETHOD(device_detach, dc_detach), 305 DEVMETHOD(device_suspend, dc_suspend), 306 DEVMETHOD(device_resume, dc_resume), 307 DEVMETHOD(device_shutdown, dc_shutdown), 308 309 /* bus interface */ 310 DEVMETHOD(bus_print_child, bus_generic_print_child), 311 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 312 313 /* MII interface */ 314 DEVMETHOD(miibus_readreg, dc_miibus_readreg), 315 DEVMETHOD(miibus_writereg, dc_miibus_writereg), 316 DEVMETHOD(miibus_statchg, dc_miibus_statchg), 317 DEVMETHOD(miibus_mediainit, dc_miibus_mediainit), 318 319 { 0, 0 } 320 }; 321 322 static driver_t dc_driver = { 323 "dc", 324 dc_methods, 325 sizeof(struct dc_softc) 326 }; 327 328 static devclass_t dc_devclass; 329 #ifdef __i386__ 330 static int dc_quick = 1; 331 SYSCTL_INT(_hw, OID_AUTO, dc_quick, CTLFLAG_RW, &dc_quick, 0, 332 "do not m_devget() in dc driver"); 333 #endif 334 335 DRIVER_MODULE(dc, cardbus, dc_driver, dc_devclass, 0, 0); 336 DRIVER_MODULE(dc, pci, dc_driver, dc_devclass, 0, 0); 337 DRIVER_MODULE(miibus, dc, miibus_driver, miibus_devclass, 0, 0); 338 339 #define DC_SETBIT(sc, reg, x) \ 340 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x)) 341 342 #define DC_CLRBIT(sc, reg, x) \ 343 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x)) 344 345 #define SIO_SET(x) DC_SETBIT(sc, DC_SIO, (x)) 346 #define SIO_CLR(x) DC_CLRBIT(sc, DC_SIO, (x)) 347 348 #define IS_MPSAFE 0 349 350 static void 351 dc_delay(struct dc_softc *sc) 352 { 353 int idx; 354 355 for (idx = (300 / 33) + 1; idx > 0; idx--) 356 CSR_READ_4(sc, DC_BUSCTL); 357 } 358 359 static void 360 dc_eeprom_width(struct dc_softc *sc) 361 { 362 int i; 363 364 /* Force EEPROM to idle state. */ 365 dc_eeprom_idle(sc); 366 367 /* Enter EEPROM access mode. */ 368 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 369 dc_delay(sc); 370 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 371 dc_delay(sc); 372 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 373 dc_delay(sc); 374 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 375 dc_delay(sc); 376 377 for (i = 3; i--;) { 378 if (6 & (1 << i)) 379 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 380 else 381 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 382 dc_delay(sc); 383 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 384 dc_delay(sc); 385 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 386 dc_delay(sc); 387 } 388 389 for (i = 1; i <= 12; i++) { 390 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 391 dc_delay(sc); 392 if (!(CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)) { 393 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 394 dc_delay(sc); 395 break; 396 } 397 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 398 dc_delay(sc); 399 } 400 401 /* Turn off EEPROM access mode. */ 402 dc_eeprom_idle(sc); 403 404 if (i < 4 || i > 12) 405 sc->dc_romwidth = 6; 406 else 407 sc->dc_romwidth = i; 408 409 /* Enter EEPROM access mode. */ 410 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 411 dc_delay(sc); 412 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 413 dc_delay(sc); 414 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 415 dc_delay(sc); 416 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 417 dc_delay(sc); 418 419 /* Turn off EEPROM access mode. */ 420 dc_eeprom_idle(sc); 421 } 422 423 static void 424 dc_eeprom_idle(struct dc_softc *sc) 425 { 426 int i; 427 428 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 429 dc_delay(sc); 430 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 431 dc_delay(sc); 432 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 433 dc_delay(sc); 434 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 435 dc_delay(sc); 436 437 for (i = 0; i < 25; i++) { 438 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 439 dc_delay(sc); 440 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 441 dc_delay(sc); 442 } 443 444 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 445 dc_delay(sc); 446 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CS); 447 dc_delay(sc); 448 CSR_WRITE_4(sc, DC_SIO, 0x00000000); 449 } 450 451 /* 452 * Send a read command and address to the EEPROM, check for ACK. 453 */ 454 static void 455 dc_eeprom_putbyte(struct dc_softc *sc, int addr) 456 { 457 int d, i; 458 459 d = DC_EECMD_READ >> 6; 460 for (i = 3; i--; ) { 461 if (d & (1 << i)) 462 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 463 else 464 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 465 dc_delay(sc); 466 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 467 dc_delay(sc); 468 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 469 dc_delay(sc); 470 } 471 472 /* 473 * Feed in each bit and strobe the clock. 474 */ 475 for (i = sc->dc_romwidth; i--;) { 476 if (addr & (1 << i)) { 477 SIO_SET(DC_SIO_EE_DATAIN); 478 } else { 479 SIO_CLR(DC_SIO_EE_DATAIN); 480 } 481 dc_delay(sc); 482 SIO_SET(DC_SIO_EE_CLK); 483 dc_delay(sc); 484 SIO_CLR(DC_SIO_EE_CLK); 485 dc_delay(sc); 486 } 487 } 488 489 /* 490 * Read a word of data stored in the EEPROM at address 'addr.' 491 * The PNIC 82c168/82c169 has its own non-standard way to read 492 * the EEPROM. 493 */ 494 static void 495 dc_eeprom_getword_pnic(struct dc_softc *sc, int addr, u_int16_t *dest) 496 { 497 int i; 498 u_int32_t r; 499 500 CSR_WRITE_4(sc, DC_PN_SIOCTL, DC_PN_EEOPCODE_READ | addr); 501 502 for (i = 0; i < DC_TIMEOUT; i++) { 503 DELAY(1); 504 r = CSR_READ_4(sc, DC_SIO); 505 if (!(r & DC_PN_SIOCTL_BUSY)) { 506 *dest = (u_int16_t)(r & 0xFFFF); 507 return; 508 } 509 } 510 } 511 512 /* 513 * Read a word of data stored in the EEPROM at address 'addr.' 514 * The Xircom X3201 has its own non-standard way to read 515 * the EEPROM, too. 516 */ 517 static void 518 dc_eeprom_getword_xircom(struct dc_softc *sc, int addr, u_int16_t *dest) 519 { 520 521 SIO_SET(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ); 522 523 addr *= 2; 524 CSR_WRITE_4(sc, DC_ROM, addr | 0x160); 525 *dest = (u_int16_t)CSR_READ_4(sc, DC_SIO) & 0xff; 526 addr += 1; 527 CSR_WRITE_4(sc, DC_ROM, addr | 0x160); 528 *dest |= ((u_int16_t)CSR_READ_4(sc, DC_SIO) & 0xff) << 8; 529 530 SIO_CLR(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ); 531 } 532 533 /* 534 * Read a word of data stored in the EEPROM at address 'addr.' 535 */ 536 static void 537 dc_eeprom_getword(struct dc_softc *sc, int addr, u_int16_t *dest) 538 { 539 int i; 540 u_int16_t word = 0; 541 542 /* Force EEPROM to idle state. */ 543 dc_eeprom_idle(sc); 544 545 /* Enter EEPROM access mode. */ 546 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 547 dc_delay(sc); 548 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 549 dc_delay(sc); 550 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 551 dc_delay(sc); 552 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 553 dc_delay(sc); 554 555 /* 556 * Send address of word we want to read. 557 */ 558 dc_eeprom_putbyte(sc, addr); 559 560 /* 561 * Start reading bits from EEPROM. 562 */ 563 for (i = 0x8000; i; i >>= 1) { 564 SIO_SET(DC_SIO_EE_CLK); 565 dc_delay(sc); 566 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT) 567 word |= i; 568 dc_delay(sc); 569 SIO_CLR(DC_SIO_EE_CLK); 570 dc_delay(sc); 571 } 572 573 /* Turn off EEPROM access mode. */ 574 dc_eeprom_idle(sc); 575 576 *dest = word; 577 } 578 579 /* 580 * Read a sequence of words from the EEPROM. 581 */ 582 static void 583 dc_read_eeprom(struct dc_softc *sc, caddr_t dest, int off, int cnt, int be) 584 { 585 int i; 586 u_int16_t word = 0, *ptr; 587 588 for (i = 0; i < cnt; i++) { 589 if (DC_IS_PNIC(sc)) 590 dc_eeprom_getword_pnic(sc, off + i, &word); 591 else if (DC_IS_XIRCOM(sc)) 592 dc_eeprom_getword_xircom(sc, off + i, &word); 593 else 594 dc_eeprom_getword(sc, off + i, &word); 595 ptr = (u_int16_t *)(dest + (i * 2)); 596 if (be) 597 *ptr = be16toh(word); 598 else 599 *ptr = le16toh(word); 600 } 601 } 602 603 /* 604 * The following two routines are taken from the Macronix 98713 605 * Application Notes pp.19-21. 606 */ 607 /* 608 * Write a bit to the MII bus. 609 */ 610 static void 611 dc_mii_writebit(struct dc_softc *sc, int bit) 612 { 613 614 if (bit) 615 CSR_WRITE_4(sc, DC_SIO, 616 DC_SIO_ROMCTL_WRITE | DC_SIO_MII_DATAOUT); 617 else 618 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); 619 620 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); 621 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); 622 } 623 624 /* 625 * Read a bit from the MII bus. 626 */ 627 static int 628 dc_mii_readbit(struct dc_softc *sc) 629 { 630 631 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_READ | DC_SIO_MII_DIR); 632 CSR_READ_4(sc, DC_SIO); 633 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); 634 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); 635 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_MII_DATAIN) 636 return (1); 637 638 return (0); 639 } 640 641 /* 642 * Sync the PHYs by setting data bit and strobing the clock 32 times. 643 */ 644 static void 645 dc_mii_sync(struct dc_softc *sc) 646 { 647 int i; 648 649 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); 650 651 for (i = 0; i < 32; i++) 652 dc_mii_writebit(sc, 1); 653 } 654 655 /* 656 * Clock a series of bits through the MII. 657 */ 658 static void 659 dc_mii_send(struct dc_softc *sc, u_int32_t bits, int cnt) 660 { 661 int i; 662 663 for (i = (0x1 << (cnt - 1)); i; i >>= 1) 664 dc_mii_writebit(sc, bits & i); 665 } 666 667 /* 668 * Read an PHY register through the MII. 669 */ 670 static int 671 dc_mii_readreg(struct dc_softc *sc, struct dc_mii_frame *frame) 672 { 673 int i, ack; 674 675 DC_LOCK(sc); 676 677 /* 678 * Set up frame for RX. 679 */ 680 frame->mii_stdelim = DC_MII_STARTDELIM; 681 frame->mii_opcode = DC_MII_READOP; 682 frame->mii_turnaround = 0; 683 frame->mii_data = 0; 684 685 /* 686 * Sync the PHYs. 687 */ 688 dc_mii_sync(sc); 689 690 /* 691 * Send command/address info. 692 */ 693 dc_mii_send(sc, frame->mii_stdelim, 2); 694 dc_mii_send(sc, frame->mii_opcode, 2); 695 dc_mii_send(sc, frame->mii_phyaddr, 5); 696 dc_mii_send(sc, frame->mii_regaddr, 5); 697 698 #ifdef notdef 699 /* Idle bit */ 700 dc_mii_writebit(sc, 1); 701 dc_mii_writebit(sc, 0); 702 #endif 703 704 /* Check for ack. */ 705 ack = dc_mii_readbit(sc); 706 707 /* 708 * Now try reading data bits. If the ack failed, we still 709 * need to clock through 16 cycles to keep the PHY(s) in sync. 710 */ 711 if (ack) { 712 for (i = 0; i < 16; i++) 713 dc_mii_readbit(sc); 714 goto fail; 715 } 716 717 for (i = 0x8000; i; i >>= 1) { 718 if (!ack) { 719 if (dc_mii_readbit(sc)) 720 frame->mii_data |= i; 721 } 722 } 723 724 fail: 725 726 dc_mii_writebit(sc, 0); 727 dc_mii_writebit(sc, 0); 728 729 DC_UNLOCK(sc); 730 731 if (ack) 732 return (1); 733 return (0); 734 } 735 736 /* 737 * Write to a PHY register through the MII. 738 */ 739 static int 740 dc_mii_writereg(struct dc_softc *sc, struct dc_mii_frame *frame) 741 { 742 743 DC_LOCK(sc); 744 /* 745 * Set up frame for TX. 746 */ 747 748 frame->mii_stdelim = DC_MII_STARTDELIM; 749 frame->mii_opcode = DC_MII_WRITEOP; 750 frame->mii_turnaround = DC_MII_TURNAROUND; 751 752 /* 753 * Sync the PHYs. 754 */ 755 dc_mii_sync(sc); 756 757 dc_mii_send(sc, frame->mii_stdelim, 2); 758 dc_mii_send(sc, frame->mii_opcode, 2); 759 dc_mii_send(sc, frame->mii_phyaddr, 5); 760 dc_mii_send(sc, frame->mii_regaddr, 5); 761 dc_mii_send(sc, frame->mii_turnaround, 2); 762 dc_mii_send(sc, frame->mii_data, 16); 763 764 /* Idle bit. */ 765 dc_mii_writebit(sc, 0); 766 dc_mii_writebit(sc, 0); 767 768 DC_UNLOCK(sc); 769 770 return (0); 771 } 772 773 static int 774 dc_miibus_readreg(device_t dev, int phy, int reg) 775 { 776 struct dc_mii_frame frame; 777 struct dc_softc *sc; 778 int i, rval, phy_reg = 0; 779 780 sc = device_get_softc(dev); 781 bzero(&frame, sizeof(frame)); 782 783 /* 784 * Note: both the AL981 and AN985 have internal PHYs, 785 * however the AL981 provides direct access to the PHY 786 * registers while the AN985 uses a serial MII interface. 787 * The AN985's MII interface is also buggy in that you 788 * can read from any MII address (0 to 31), but only address 1 789 * behaves normally. To deal with both cases, we pretend 790 * that the PHY is at MII address 1. 791 */ 792 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) 793 return (0); 794 795 /* 796 * Note: the ukphy probes of the RS7112 report a PHY at 797 * MII address 0 (possibly HomePNA?) and 1 (ethernet) 798 * so we only respond to correct one. 799 */ 800 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR) 801 return (0); 802 803 if (sc->dc_pmode != DC_PMODE_MII) { 804 if (phy == (MII_NPHY - 1)) { 805 switch (reg) { 806 case MII_BMSR: 807 /* 808 * Fake something to make the probe 809 * code think there's a PHY here. 810 */ 811 return (BMSR_MEDIAMASK); 812 break; 813 case MII_PHYIDR1: 814 if (DC_IS_PNIC(sc)) 815 return (DC_VENDORID_LO); 816 return (DC_VENDORID_DEC); 817 break; 818 case MII_PHYIDR2: 819 if (DC_IS_PNIC(sc)) 820 return (DC_DEVICEID_82C168); 821 return (DC_DEVICEID_21143); 822 break; 823 default: 824 return (0); 825 break; 826 } 827 } else 828 return (0); 829 } 830 831 if (DC_IS_PNIC(sc)) { 832 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ | 833 (phy << 23) | (reg << 18)); 834 for (i = 0; i < DC_TIMEOUT; i++) { 835 DELAY(1); 836 rval = CSR_READ_4(sc, DC_PN_MII); 837 if (!(rval & DC_PN_MII_BUSY)) { 838 rval &= 0xFFFF; 839 return (rval == 0xFFFF ? 0 : rval); 840 } 841 } 842 return (0); 843 } 844 845 if (DC_IS_COMET(sc)) { 846 switch (reg) { 847 case MII_BMCR: 848 phy_reg = DC_AL_BMCR; 849 break; 850 case MII_BMSR: 851 phy_reg = DC_AL_BMSR; 852 break; 853 case MII_PHYIDR1: 854 phy_reg = DC_AL_VENID; 855 break; 856 case MII_PHYIDR2: 857 phy_reg = DC_AL_DEVID; 858 break; 859 case MII_ANAR: 860 phy_reg = DC_AL_ANAR; 861 break; 862 case MII_ANLPAR: 863 phy_reg = DC_AL_LPAR; 864 break; 865 case MII_ANER: 866 phy_reg = DC_AL_ANER; 867 break; 868 default: 869 printf("dc%d: phy_read: bad phy register %x\n", 870 sc->dc_unit, reg); 871 return (0); 872 break; 873 } 874 875 rval = CSR_READ_4(sc, phy_reg) & 0x0000FFFF; 876 877 if (rval == 0xFFFF) 878 return (0); 879 return (rval); 880 } 881 882 frame.mii_phyaddr = phy; 883 frame.mii_regaddr = reg; 884 if (sc->dc_type == DC_TYPE_98713) { 885 phy_reg = CSR_READ_4(sc, DC_NETCFG); 886 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); 887 } 888 dc_mii_readreg(sc, &frame); 889 if (sc->dc_type == DC_TYPE_98713) 890 CSR_WRITE_4(sc, DC_NETCFG, phy_reg); 891 892 return (frame.mii_data); 893 } 894 895 static int 896 dc_miibus_writereg(device_t dev, int phy, int reg, int data) 897 { 898 struct dc_softc *sc; 899 struct dc_mii_frame frame; 900 int i, phy_reg = 0; 901 902 sc = device_get_softc(dev); 903 bzero(&frame, sizeof(frame)); 904 905 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) 906 return (0); 907 908 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR) 909 return (0); 910 911 if (DC_IS_PNIC(sc)) { 912 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE | 913 (phy << 23) | (reg << 10) | data); 914 for (i = 0; i < DC_TIMEOUT; i++) { 915 if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY)) 916 break; 917 } 918 return (0); 919 } 920 921 if (DC_IS_COMET(sc)) { 922 switch (reg) { 923 case MII_BMCR: 924 phy_reg = DC_AL_BMCR; 925 break; 926 case MII_BMSR: 927 phy_reg = DC_AL_BMSR; 928 break; 929 case MII_PHYIDR1: 930 phy_reg = DC_AL_VENID; 931 break; 932 case MII_PHYIDR2: 933 phy_reg = DC_AL_DEVID; 934 break; 935 case MII_ANAR: 936 phy_reg = DC_AL_ANAR; 937 break; 938 case MII_ANLPAR: 939 phy_reg = DC_AL_LPAR; 940 break; 941 case MII_ANER: 942 phy_reg = DC_AL_ANER; 943 break; 944 default: 945 printf("dc%d: phy_write: bad phy register %x\n", 946 sc->dc_unit, reg); 947 return (0); 948 break; 949 } 950 951 CSR_WRITE_4(sc, phy_reg, data); 952 return (0); 953 } 954 955 frame.mii_phyaddr = phy; 956 frame.mii_regaddr = reg; 957 frame.mii_data = data; 958 959 if (sc->dc_type == DC_TYPE_98713) { 960 phy_reg = CSR_READ_4(sc, DC_NETCFG); 961 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); 962 } 963 dc_mii_writereg(sc, &frame); 964 if (sc->dc_type == DC_TYPE_98713) 965 CSR_WRITE_4(sc, DC_NETCFG, phy_reg); 966 967 return (0); 968 } 969 970 static void 971 dc_miibus_statchg(device_t dev) 972 { 973 struct dc_softc *sc; 974 struct mii_data *mii; 975 struct ifmedia *ifm; 976 977 sc = device_get_softc(dev); 978 if (DC_IS_ADMTEK(sc)) 979 return; 980 981 mii = device_get_softc(sc->dc_miibus); 982 ifm = &mii->mii_media; 983 if (DC_IS_DAVICOM(sc) && 984 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) { 985 dc_setcfg(sc, ifm->ifm_media); 986 sc->dc_if_media = ifm->ifm_media; 987 } else { 988 dc_setcfg(sc, mii->mii_media_active); 989 sc->dc_if_media = mii->mii_media_active; 990 } 991 } 992 993 /* 994 * Special support for DM9102A cards with HomePNA PHYs. Note: 995 * with the Davicom DM9102A/DM9801 eval board that I have, it seems 996 * to be impossible to talk to the management interface of the DM9801 997 * PHY (its MDIO pin is not connected to anything). Consequently, 998 * the driver has to just 'know' about the additional mode and deal 999 * with it itself. *sigh* 1000 */ 1001 static void 1002 dc_miibus_mediainit(device_t dev) 1003 { 1004 struct dc_softc *sc; 1005 struct mii_data *mii; 1006 struct ifmedia *ifm; 1007 int rev; 1008 1009 rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF; 1010 1011 sc = device_get_softc(dev); 1012 mii = device_get_softc(sc->dc_miibus); 1013 ifm = &mii->mii_media; 1014 1015 if (DC_IS_DAVICOM(sc) && rev >= DC_REVISION_DM9102A) 1016 ifmedia_add(ifm, IFM_ETHER | IFM_HPNA_1, 0, NULL); 1017 } 1018 1019 #define DC_BITS_512 9 1020 #define DC_BITS_128 7 1021 #define DC_BITS_64 6 1022 1023 static uint32_t 1024 dc_mchash_le(struct dc_softc *sc, const uint8_t *addr) 1025 { 1026 uint32_t crc; 1027 1028 /* Compute CRC for the address value. */ 1029 crc = ether_crc32_le(addr, ETHER_ADDR_LEN); 1030 1031 /* 1032 * The hash table on the PNIC II and the MX98715AEC-C/D/E 1033 * chips is only 128 bits wide. 1034 */ 1035 if (sc->dc_flags & DC_128BIT_HASH) 1036 return (crc & ((1 << DC_BITS_128) - 1)); 1037 1038 /* The hash table on the MX98715BEC is only 64 bits wide. */ 1039 if (sc->dc_flags & DC_64BIT_HASH) 1040 return (crc & ((1 << DC_BITS_64) - 1)); 1041 1042 /* Xircom's hash filtering table is different (read: weird) */ 1043 /* Xircom uses the LEAST significant bits */ 1044 if (DC_IS_XIRCOM(sc)) { 1045 if ((crc & 0x180) == 0x180) 1046 return ((crc & 0x0F) + (crc & 0x70) * 3 + (14 << 4)); 1047 else 1048 return ((crc & 0x1F) + ((crc >> 1) & 0xF0) * 3 + 1049 (12 << 4)); 1050 } 1051 1052 return (crc & ((1 << DC_BITS_512) - 1)); 1053 } 1054 1055 /* 1056 * Calculate CRC of a multicast group address, return the lower 6 bits. 1057 */ 1058 static uint32_t 1059 dc_mchash_be(const uint8_t *addr) 1060 { 1061 uint32_t crc; 1062 1063 /* Compute CRC for the address value. */ 1064 crc = ether_crc32_be(addr, ETHER_ADDR_LEN); 1065 1066 /* Return the filter bit position. */ 1067 return ((crc >> 26) & 0x0000003F); 1068 } 1069 1070 /* 1071 * 21143-style RX filter setup routine. Filter programming is done by 1072 * downloading a special setup frame into the TX engine. 21143, Macronix, 1073 * PNIC, PNIC II and Davicom chips are programmed this way. 1074 * 1075 * We always program the chip using 'hash perfect' mode, i.e. one perfect 1076 * address (our node address) and a 512-bit hash filter for multicast 1077 * frames. We also sneak the broadcast address into the hash filter since 1078 * we need that too. 1079 */ 1080 static void 1081 dc_setfilt_21143(struct dc_softc *sc) 1082 { 1083 struct dc_desc *sframe; 1084 u_int32_t h, *sp; 1085 struct ifmultiaddr *ifma; 1086 struct ifnet *ifp; 1087 int i; 1088 1089 ifp = &sc->arpcom.ac_if; 1090 1091 i = sc->dc_cdata.dc_tx_prod; 1092 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT); 1093 sc->dc_cdata.dc_tx_cnt++; 1094 sframe = &sc->dc_ldata->dc_tx_list[i]; 1095 sp = sc->dc_cdata.dc_sbuf; 1096 bzero(sp, DC_SFRAME_LEN); 1097 1098 sframe->dc_data = htole32(sc->dc_saddr); 1099 sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP | 1100 DC_TXCTL_TLINK | DC_FILTER_HASHPERF | DC_TXCTL_FINT); 1101 1102 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)sc->dc_cdata.dc_sbuf; 1103 1104 /* If we want promiscuous mode, set the allframes bit. */ 1105 if (ifp->if_flags & IFF_PROMISC) 1106 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1107 else 1108 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1109 1110 if (ifp->if_flags & IFF_ALLMULTI) 1111 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1112 else 1113 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1114 1115 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1116 if (ifma->ifma_addr->sa_family != AF_LINK) 1117 continue; 1118 h = dc_mchash_le(sc, 1119 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1120 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1121 } 1122 1123 if (ifp->if_flags & IFF_BROADCAST) { 1124 h = dc_mchash_le(sc, ifp->if_broadcastaddr); 1125 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1126 } 1127 1128 /* Set our MAC address */ 1129 sp[39] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 1130 sp[40] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 1131 sp[41] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 1132 1133 sframe->dc_status = htole32(DC_TXSTAT_OWN); 1134 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 1135 1136 /* 1137 * The PNIC takes an exceedingly long time to process its 1138 * setup frame; wait 10ms after posting the setup frame 1139 * before proceeding, just so it has time to swallow its 1140 * medicine. 1141 */ 1142 DELAY(10000); 1143 1144 ifp->if_timer = 5; 1145 } 1146 1147 static void 1148 dc_setfilt_admtek(struct dc_softc *sc) 1149 { 1150 struct ifnet *ifp; 1151 struct ifmultiaddr *ifma; 1152 int h = 0; 1153 u_int32_t hashes[2] = { 0, 0 }; 1154 1155 ifp = &sc->arpcom.ac_if; 1156 1157 /* Init our MAC address. */ 1158 CSR_WRITE_4(sc, DC_AL_PAR0, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); 1159 CSR_WRITE_4(sc, DC_AL_PAR1, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); 1160 1161 /* If we want promiscuous mode, set the allframes bit. */ 1162 if (ifp->if_flags & IFF_PROMISC) 1163 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1164 else 1165 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1166 1167 if (ifp->if_flags & IFF_ALLMULTI) 1168 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1169 else 1170 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1171 1172 /* First, zot all the existing hash bits. */ 1173 CSR_WRITE_4(sc, DC_AL_MAR0, 0); 1174 CSR_WRITE_4(sc, DC_AL_MAR1, 0); 1175 1176 /* 1177 * If we're already in promisc or allmulti mode, we 1178 * don't have to bother programming the multicast filter. 1179 */ 1180 if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) 1181 return; 1182 1183 /* Now program new ones. */ 1184 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1185 if (ifma->ifma_addr->sa_family != AF_LINK) 1186 continue; 1187 if (DC_IS_CENTAUR(sc)) 1188 h = dc_mchash_le(sc, 1189 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1190 else 1191 h = dc_mchash_be( 1192 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1193 if (h < 32) 1194 hashes[0] |= (1 << h); 1195 else 1196 hashes[1] |= (1 << (h - 32)); 1197 } 1198 1199 CSR_WRITE_4(sc, DC_AL_MAR0, hashes[0]); 1200 CSR_WRITE_4(sc, DC_AL_MAR1, hashes[1]); 1201 } 1202 1203 static void 1204 dc_setfilt_asix(struct dc_softc *sc) 1205 { 1206 struct ifnet *ifp; 1207 struct ifmultiaddr *ifma; 1208 int h = 0; 1209 u_int32_t hashes[2] = { 0, 0 }; 1210 1211 ifp = &sc->arpcom.ac_if; 1212 1213 /* Init our MAC address */ 1214 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR0); 1215 CSR_WRITE_4(sc, DC_AX_FILTDATA, 1216 *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); 1217 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR1); 1218 CSR_WRITE_4(sc, DC_AX_FILTDATA, 1219 *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); 1220 1221 /* If we want promiscuous mode, set the allframes bit. */ 1222 if (ifp->if_flags & IFF_PROMISC) 1223 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1224 else 1225 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1226 1227 if (ifp->if_flags & IFF_ALLMULTI) 1228 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1229 else 1230 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1231 1232 /* 1233 * The ASIX chip has a special bit to enable reception 1234 * of broadcast frames. 1235 */ 1236 if (ifp->if_flags & IFF_BROADCAST) 1237 DC_SETBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); 1238 else 1239 DC_CLRBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); 1240 1241 /* first, zot all the existing hash bits */ 1242 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); 1243 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); 1244 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); 1245 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); 1246 1247 /* 1248 * If we're already in promisc or allmulti mode, we 1249 * don't have to bother programming the multicast filter. 1250 */ 1251 if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) 1252 return; 1253 1254 /* now program new ones */ 1255 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1256 if (ifma->ifma_addr->sa_family != AF_LINK) 1257 continue; 1258 h = dc_mchash_be(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1259 if (h < 32) 1260 hashes[0] |= (1 << h); 1261 else 1262 hashes[1] |= (1 << (h - 32)); 1263 } 1264 1265 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); 1266 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]); 1267 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); 1268 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]); 1269 } 1270 1271 static void 1272 dc_setfilt_xircom(struct dc_softc *sc) 1273 { 1274 struct ifnet *ifp; 1275 struct ifmultiaddr *ifma; 1276 struct dc_desc *sframe; 1277 u_int32_t h, *sp; 1278 int i; 1279 1280 ifp = &sc->arpcom.ac_if; 1281 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)); 1282 1283 i = sc->dc_cdata.dc_tx_prod; 1284 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT); 1285 sc->dc_cdata.dc_tx_cnt++; 1286 sframe = &sc->dc_ldata->dc_tx_list[i]; 1287 sp = sc->dc_cdata.dc_sbuf; 1288 bzero(sp, DC_SFRAME_LEN); 1289 1290 sframe->dc_data = htole32(sc->dc_saddr); 1291 sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP | 1292 DC_TXCTL_TLINK | DC_FILTER_HASHPERF | DC_TXCTL_FINT); 1293 1294 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)sc->dc_cdata.dc_sbuf; 1295 1296 /* If we want promiscuous mode, set the allframes bit. */ 1297 if (ifp->if_flags & IFF_PROMISC) 1298 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1299 else 1300 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1301 1302 if (ifp->if_flags & IFF_ALLMULTI) 1303 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1304 else 1305 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1306 1307 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1308 if (ifma->ifma_addr->sa_family != AF_LINK) 1309 continue; 1310 h = dc_mchash_le(sc, 1311 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1312 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1313 } 1314 1315 if (ifp->if_flags & IFF_BROADCAST) { 1316 h = dc_mchash_le(sc, ifp->if_broadcastaddr); 1317 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1318 } 1319 1320 /* Set our MAC address */ 1321 sp[0] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 1322 sp[1] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 1323 sp[2] = DC_SP_MAC(((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 1324 1325 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 1326 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); 1327 ifp->if_flags |= IFF_RUNNING; 1328 sframe->dc_status = htole32(DC_TXSTAT_OWN); 1329 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 1330 1331 /* 1332 * Wait some time... 1333 */ 1334 DELAY(1000); 1335 1336 ifp->if_timer = 5; 1337 } 1338 1339 static void 1340 dc_setfilt(struct dc_softc *sc) 1341 { 1342 1343 if (DC_IS_INTEL(sc) || DC_IS_MACRONIX(sc) || DC_IS_PNIC(sc) || 1344 DC_IS_PNICII(sc) || DC_IS_DAVICOM(sc) || DC_IS_CONEXANT(sc)) 1345 dc_setfilt_21143(sc); 1346 1347 if (DC_IS_ASIX(sc)) 1348 dc_setfilt_asix(sc); 1349 1350 if (DC_IS_ADMTEK(sc)) 1351 dc_setfilt_admtek(sc); 1352 1353 if (DC_IS_XIRCOM(sc)) 1354 dc_setfilt_xircom(sc); 1355 } 1356 1357 /* 1358 * In order to fiddle with the 'full-duplex' and '100Mbps' bits in 1359 * the netconfig register, we first have to put the transmit and/or 1360 * receive logic in the idle state. 1361 */ 1362 static void 1363 dc_setcfg(struct dc_softc *sc, int media) 1364 { 1365 int i, restart = 0, watchdogreg; 1366 u_int32_t isr; 1367 1368 if (IFM_SUBTYPE(media) == IFM_NONE) 1369 return; 1370 1371 if (CSR_READ_4(sc, DC_NETCFG) & (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)) { 1372 restart = 1; 1373 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)); 1374 1375 for (i = 0; i < DC_TIMEOUT; i++) { 1376 isr = CSR_READ_4(sc, DC_ISR); 1377 if (isr & DC_ISR_TX_IDLE && 1378 ((isr & DC_ISR_RX_STATE) == DC_RXSTATE_STOPPED || 1379 (isr & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT)) 1380 break; 1381 DELAY(10); 1382 } 1383 1384 if (i == DC_TIMEOUT) 1385 printf("dc%d: failed to force tx and " 1386 "rx to idle state\n", sc->dc_unit); 1387 } 1388 1389 if (IFM_SUBTYPE(media) == IFM_100_TX) { 1390 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); 1391 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); 1392 if (sc->dc_pmode == DC_PMODE_MII) { 1393 if (DC_IS_INTEL(sc)) { 1394 /* There's a write enable bit here that reads as 1. */ 1395 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); 1396 watchdogreg &= ~DC_WDOG_CTLWREN; 1397 watchdogreg |= DC_WDOG_JABBERDIS; 1398 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); 1399 } else { 1400 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); 1401 } 1402 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1403 DC_NETCFG_PORTSEL | DC_NETCFG_SCRAMBLER)); 1404 if (sc->dc_type == DC_TYPE_98713) 1405 DC_SETBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1406 DC_NETCFG_SCRAMBLER)); 1407 if (!DC_IS_DAVICOM(sc)) 1408 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1409 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1410 if (DC_IS_INTEL(sc)) 1411 dc_apply_fixup(sc, IFM_AUTO); 1412 } else { 1413 if (DC_IS_PNIC(sc)) { 1414 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_SPEEDSEL); 1415 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); 1416 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); 1417 } 1418 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1419 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1420 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); 1421 if (DC_IS_INTEL(sc)) 1422 dc_apply_fixup(sc, 1423 (media & IFM_GMASK) == IFM_FDX ? 1424 IFM_100_TX | IFM_FDX : IFM_100_TX); 1425 } 1426 } 1427 1428 if (IFM_SUBTYPE(media) == IFM_10_T) { 1429 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); 1430 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); 1431 if (sc->dc_pmode == DC_PMODE_MII) { 1432 /* There's a write enable bit here that reads as 1. */ 1433 if (DC_IS_INTEL(sc)) { 1434 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); 1435 watchdogreg &= ~DC_WDOG_CTLWREN; 1436 watchdogreg |= DC_WDOG_JABBERDIS; 1437 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); 1438 } else { 1439 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); 1440 } 1441 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1442 DC_NETCFG_PORTSEL | DC_NETCFG_SCRAMBLER)); 1443 if (sc->dc_type == DC_TYPE_98713) 1444 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1445 if (!DC_IS_DAVICOM(sc)) 1446 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1447 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1448 if (DC_IS_INTEL(sc)) 1449 dc_apply_fixup(sc, IFM_AUTO); 1450 } else { 1451 if (DC_IS_PNIC(sc)) { 1452 DC_PN_GPIO_CLRBIT(sc, DC_PN_GPIO_SPEEDSEL); 1453 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); 1454 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); 1455 } 1456 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1457 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1458 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); 1459 if (DC_IS_INTEL(sc)) { 1460 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 1461 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1462 if ((media & IFM_GMASK) == IFM_FDX) 1463 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3D); 1464 else 1465 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3F); 1466 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 1467 DC_CLRBIT(sc, DC_10BTCTRL, 1468 DC_TCTL_AUTONEGENBL); 1469 dc_apply_fixup(sc, 1470 (media & IFM_GMASK) == IFM_FDX ? 1471 IFM_10_T | IFM_FDX : IFM_10_T); 1472 DELAY(20000); 1473 } 1474 } 1475 } 1476 1477 /* 1478 * If this is a Davicom DM9102A card with a DM9801 HomePNA 1479 * PHY and we want HomePNA mode, set the portsel bit to turn 1480 * on the external MII port. 1481 */ 1482 if (DC_IS_DAVICOM(sc)) { 1483 if (IFM_SUBTYPE(media) == IFM_HPNA_1) { 1484 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1485 sc->dc_link = 1; 1486 } else { 1487 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1488 } 1489 } 1490 1491 if ((media & IFM_GMASK) == IFM_FDX) { 1492 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 1493 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) 1494 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); 1495 } else { 1496 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 1497 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) 1498 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); 1499 } 1500 1501 if (restart) 1502 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON | DC_NETCFG_RX_ON); 1503 } 1504 1505 static void 1506 dc_reset(struct dc_softc *sc) 1507 { 1508 int i; 1509 1510 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); 1511 1512 for (i = 0; i < DC_TIMEOUT; i++) { 1513 DELAY(10); 1514 if (!(CSR_READ_4(sc, DC_BUSCTL) & DC_BUSCTL_RESET)) 1515 break; 1516 } 1517 1518 if (DC_IS_ASIX(sc) || DC_IS_ADMTEK(sc) || DC_IS_CONEXANT(sc) || 1519 DC_IS_XIRCOM(sc) || DC_IS_INTEL(sc)) { 1520 DELAY(10000); 1521 DC_CLRBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); 1522 i = 0; 1523 } 1524 1525 if (i == DC_TIMEOUT) 1526 printf("dc%d: reset never completed!\n", sc->dc_unit); 1527 1528 /* Wait a little while for the chip to get its brains in order. */ 1529 DELAY(1000); 1530 1531 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 1532 CSR_WRITE_4(sc, DC_BUSCTL, 0x00000000); 1533 CSR_WRITE_4(sc, DC_NETCFG, 0x00000000); 1534 1535 /* 1536 * Bring the SIA out of reset. In some cases, it looks 1537 * like failing to unreset the SIA soon enough gets it 1538 * into a state where it will never come out of reset 1539 * until we reset the whole chip again. 1540 */ 1541 if (DC_IS_INTEL(sc)) { 1542 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 1543 CSR_WRITE_4(sc, DC_10BTCTRL, 0); 1544 CSR_WRITE_4(sc, DC_WATCHDOG, 0); 1545 } 1546 } 1547 1548 static struct dc_type * 1549 dc_devtype(device_t dev) 1550 { 1551 struct dc_type *t; 1552 u_int32_t rev; 1553 1554 t = dc_devs; 1555 1556 while (t->dc_name != NULL) { 1557 if ((pci_get_vendor(dev) == t->dc_vid) && 1558 (pci_get_device(dev) == t->dc_did)) { 1559 /* Check the PCI revision */ 1560 rev = pci_read_config(dev, DC_PCI_CFRV, 4) & 0xFF; 1561 if (t->dc_did == DC_DEVICEID_98713 && 1562 rev >= DC_REVISION_98713A) 1563 t++; 1564 if (t->dc_did == DC_DEVICEID_98713_CP && 1565 rev >= DC_REVISION_98713A) 1566 t++; 1567 if (t->dc_did == DC_DEVICEID_987x5 && 1568 rev >= DC_REVISION_98715AEC_C) 1569 t++; 1570 if (t->dc_did == DC_DEVICEID_987x5 && 1571 rev >= DC_REVISION_98725) 1572 t++; 1573 if (t->dc_did == DC_DEVICEID_AX88140A && 1574 rev >= DC_REVISION_88141) 1575 t++; 1576 if (t->dc_did == DC_DEVICEID_82C168 && 1577 rev >= DC_REVISION_82C169) 1578 t++; 1579 if (t->dc_did == DC_DEVICEID_DM9102 && 1580 rev >= DC_REVISION_DM9102A) 1581 t++; 1582 /* 1583 * The Microsoft MN-130 has a device ID of 0x0002, 1584 * which happens to be the same as the PNIC 82c168. 1585 * To keep dc_attach() from getting confused, we 1586 * pretend its ID is something different. 1587 * XXX: ideally, dc_attach() should be checking 1588 * vendorid+deviceid together to avoid such 1589 * collisions. 1590 */ 1591 if (t->dc_vid == DC_VENDORID_MICROSOFT && 1592 t->dc_did == DC_DEVICEID_MSMN130) 1593 t++; 1594 return (t); 1595 } 1596 t++; 1597 } 1598 1599 return (NULL); 1600 } 1601 1602 /* 1603 * Probe for a 21143 or clone chip. Check the PCI vendor and device 1604 * IDs against our list and return a device name if we find a match. 1605 * We do a little bit of extra work to identify the exact type of 1606 * chip. The MX98713 and MX98713A have the same PCI vendor/device ID, 1607 * but different revision IDs. The same is true for 98715/98715A 1608 * chips and the 98725, as well as the ASIX and ADMtek chips. In some 1609 * cases, the exact chip revision affects driver behavior. 1610 */ 1611 static int 1612 dc_probe(device_t dev) 1613 { 1614 struct dc_type *t; 1615 1616 t = dc_devtype(dev); 1617 1618 if (t != NULL) { 1619 device_set_desc(dev, t->dc_name); 1620 return (BUS_PROBE_DEFAULT); 1621 } 1622 1623 return (ENXIO); 1624 } 1625 1626 static void 1627 dc_apply_fixup(struct dc_softc *sc, int media) 1628 { 1629 struct dc_mediainfo *m; 1630 u_int8_t *p; 1631 int i; 1632 u_int32_t reg; 1633 1634 m = sc->dc_mi; 1635 1636 while (m != NULL) { 1637 if (m->dc_media == media) 1638 break; 1639 m = m->dc_next; 1640 } 1641 1642 if (m == NULL) 1643 return; 1644 1645 for (i = 0, p = m->dc_reset_ptr; i < m->dc_reset_len; i++, p += 2) { 1646 reg = (p[0] | (p[1] << 8)) << 16; 1647 CSR_WRITE_4(sc, DC_WATCHDOG, reg); 1648 } 1649 1650 for (i = 0, p = m->dc_gp_ptr; i < m->dc_gp_len; i++, p += 2) { 1651 reg = (p[0] | (p[1] << 8)) << 16; 1652 CSR_WRITE_4(sc, DC_WATCHDOG, reg); 1653 } 1654 } 1655 1656 static void 1657 dc_decode_leaf_sia(struct dc_softc *sc, struct dc_eblock_sia *l) 1658 { 1659 struct dc_mediainfo *m; 1660 1661 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1662 switch (l->dc_sia_code & ~DC_SIA_CODE_EXT) { 1663 case DC_SIA_CODE_10BT: 1664 m->dc_media = IFM_10_T; 1665 break; 1666 case DC_SIA_CODE_10BT_FDX: 1667 m->dc_media = IFM_10_T | IFM_FDX; 1668 break; 1669 case DC_SIA_CODE_10B2: 1670 m->dc_media = IFM_10_2; 1671 break; 1672 case DC_SIA_CODE_10B5: 1673 m->dc_media = IFM_10_5; 1674 break; 1675 default: 1676 break; 1677 } 1678 1679 /* 1680 * We need to ignore CSR13, CSR14, CSR15 for SIA mode. 1681 * Things apparently already work for cards that do 1682 * supply Media Specific Data. 1683 */ 1684 if (l->dc_sia_code & DC_SIA_CODE_EXT) { 1685 m->dc_gp_len = 2; 1686 m->dc_gp_ptr = 1687 (u_int8_t *)&l->dc_un.dc_sia_ext.dc_sia_gpio_ctl; 1688 } else { 1689 m->dc_gp_len = 2; 1690 m->dc_gp_ptr = 1691 (u_int8_t *)&l->dc_un.dc_sia_noext.dc_sia_gpio_ctl; 1692 } 1693 1694 m->dc_next = sc->dc_mi; 1695 sc->dc_mi = m; 1696 1697 sc->dc_pmode = DC_PMODE_SIA; 1698 } 1699 1700 static void 1701 dc_decode_leaf_sym(struct dc_softc *sc, struct dc_eblock_sym *l) 1702 { 1703 struct dc_mediainfo *m; 1704 1705 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1706 if (l->dc_sym_code == DC_SYM_CODE_100BT) 1707 m->dc_media = IFM_100_TX; 1708 1709 if (l->dc_sym_code == DC_SYM_CODE_100BT_FDX) 1710 m->dc_media = IFM_100_TX | IFM_FDX; 1711 1712 m->dc_gp_len = 2; 1713 m->dc_gp_ptr = (u_int8_t *)&l->dc_sym_gpio_ctl; 1714 1715 m->dc_next = sc->dc_mi; 1716 sc->dc_mi = m; 1717 1718 sc->dc_pmode = DC_PMODE_SYM; 1719 } 1720 1721 static void 1722 dc_decode_leaf_mii(struct dc_softc *sc, struct dc_eblock_mii *l) 1723 { 1724 struct dc_mediainfo *m; 1725 u_int8_t *p; 1726 1727 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1728 /* We abuse IFM_AUTO to represent MII. */ 1729 m->dc_media = IFM_AUTO; 1730 m->dc_gp_len = l->dc_gpr_len; 1731 1732 p = (u_int8_t *)l; 1733 p += sizeof(struct dc_eblock_mii); 1734 m->dc_gp_ptr = p; 1735 p += 2 * l->dc_gpr_len; 1736 m->dc_reset_len = *p; 1737 p++; 1738 m->dc_reset_ptr = p; 1739 1740 m->dc_next = sc->dc_mi; 1741 sc->dc_mi = m; 1742 } 1743 1744 static void 1745 dc_read_srom(struct dc_softc *sc, int bits) 1746 { 1747 int size; 1748 1749 size = 2 << bits; 1750 sc->dc_srom = malloc(size, M_DEVBUF, M_NOWAIT); 1751 dc_read_eeprom(sc, (caddr_t)sc->dc_srom, 0, (size / 2), 0); 1752 } 1753 1754 static void 1755 dc_parse_21143_srom(struct dc_softc *sc) 1756 { 1757 struct dc_leaf_hdr *lhdr; 1758 struct dc_eblock_hdr *hdr; 1759 int have_mii, i, loff; 1760 char *ptr; 1761 1762 have_mii = 0; 1763 loff = sc->dc_srom[27]; 1764 lhdr = (struct dc_leaf_hdr *)&(sc->dc_srom[loff]); 1765 1766 ptr = (char *)lhdr; 1767 ptr += sizeof(struct dc_leaf_hdr) - 1; 1768 /* 1769 * Look if we got a MII media block. 1770 */ 1771 for (i = 0; i < lhdr->dc_mcnt; i++) { 1772 hdr = (struct dc_eblock_hdr *)ptr; 1773 if (hdr->dc_type == DC_EBLOCK_MII) 1774 have_mii++; 1775 1776 ptr += (hdr->dc_len & 0x7F); 1777 ptr++; 1778 } 1779 1780 /* 1781 * Do the same thing again. Only use SIA and SYM media 1782 * blocks if no MII media block is available. 1783 */ 1784 ptr = (char *)lhdr; 1785 ptr += sizeof(struct dc_leaf_hdr) - 1; 1786 for (i = 0; i < lhdr->dc_mcnt; i++) { 1787 hdr = (struct dc_eblock_hdr *)ptr; 1788 switch (hdr->dc_type) { 1789 case DC_EBLOCK_MII: 1790 dc_decode_leaf_mii(sc, (struct dc_eblock_mii *)hdr); 1791 break; 1792 case DC_EBLOCK_SIA: 1793 if (! have_mii) 1794 dc_decode_leaf_sia(sc, 1795 (struct dc_eblock_sia *)hdr); 1796 break; 1797 case DC_EBLOCK_SYM: 1798 if (! have_mii) 1799 dc_decode_leaf_sym(sc, 1800 (struct dc_eblock_sym *)hdr); 1801 break; 1802 default: 1803 /* Don't care. Yet. */ 1804 break; 1805 } 1806 ptr += (hdr->dc_len & 0x7F); 1807 ptr++; 1808 } 1809 } 1810 1811 static void 1812 dc_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1813 { 1814 u_int32_t *paddr; 1815 1816 KASSERT(nseg == 1, ("wrong number of segments, should be 1")); 1817 paddr = arg; 1818 *paddr = segs->ds_addr; 1819 } 1820 1821 /* 1822 * Attach the interface. Allocate softc structures, do ifmedia 1823 * setup and ethernet/BPF attach. 1824 */ 1825 static int 1826 dc_attach(device_t dev) 1827 { 1828 int tmp = 0; 1829 u_char eaddr[ETHER_ADDR_LEN]; 1830 u_int32_t command; 1831 struct dc_softc *sc; 1832 struct ifnet *ifp; 1833 u_int32_t revision; 1834 int unit, error = 0, rid, mac_offset; 1835 int i; 1836 u_int8_t *mac; 1837 1838 sc = device_get_softc(dev); 1839 unit = device_get_unit(dev); 1840 1841 mtx_init(&sc->dc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 1842 MTX_DEF | MTX_RECURSE); 1843 1844 /* 1845 * Map control/status registers. 1846 */ 1847 pci_enable_busmaster(dev); 1848 1849 rid = DC_RID; 1850 sc->dc_res = bus_alloc_resource_any(dev, DC_RES, &rid, RF_ACTIVE); 1851 1852 if (sc->dc_res == NULL) { 1853 printf("dc%d: couldn't map ports/memory\n", unit); 1854 error = ENXIO; 1855 goto fail; 1856 } 1857 1858 sc->dc_btag = rman_get_bustag(sc->dc_res); 1859 sc->dc_bhandle = rman_get_bushandle(sc->dc_res); 1860 1861 /* Allocate interrupt. */ 1862 rid = 0; 1863 sc->dc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 1864 RF_SHAREABLE | RF_ACTIVE); 1865 1866 if (sc->dc_irq == NULL) { 1867 printf("dc%d: couldn't map interrupt\n", unit); 1868 error = ENXIO; 1869 goto fail; 1870 } 1871 1872 /* Need this info to decide on a chip type. */ 1873 sc->dc_info = dc_devtype(dev); 1874 revision = pci_read_config(dev, DC_PCI_CFRV, 4) & 0x000000FF; 1875 1876 /* Get the eeprom width, but PNIC and XIRCOM have diff eeprom */ 1877 if (sc->dc_info->dc_did != DC_DEVICEID_82C168 && 1878 sc->dc_info->dc_did != DC_DEVICEID_X3201) 1879 dc_eeprom_width(sc); 1880 1881 switch (sc->dc_info->dc_did) { 1882 case DC_DEVICEID_21143: 1883 sc->dc_type = DC_TYPE_21143; 1884 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1885 sc->dc_flags |= DC_REDUCED_MII_POLL; 1886 /* Save EEPROM contents so we can parse them later. */ 1887 dc_read_srom(sc, sc->dc_romwidth); 1888 break; 1889 case DC_DEVICEID_DM9009: 1890 case DC_DEVICEID_DM9100: 1891 case DC_DEVICEID_DM9102: 1892 sc->dc_type = DC_TYPE_DM9102; 1893 sc->dc_flags |= DC_TX_COALESCE | DC_TX_INTR_ALWAYS; 1894 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_TX_STORENFWD; 1895 sc->dc_flags |= DC_TX_ALIGN; 1896 sc->dc_pmode = DC_PMODE_MII; 1897 /* Increase the latency timer value. */ 1898 command = pci_read_config(dev, DC_PCI_CFLT, 4); 1899 command &= 0xFFFF00FF; 1900 command |= 0x00008000; 1901 pci_write_config(dev, DC_PCI_CFLT, command, 4); 1902 break; 1903 case DC_DEVICEID_AL981: 1904 sc->dc_type = DC_TYPE_AL981; 1905 sc->dc_flags |= DC_TX_USE_TX_INTR; 1906 sc->dc_flags |= DC_TX_ADMTEK_WAR; 1907 sc->dc_pmode = DC_PMODE_MII; 1908 dc_read_srom(sc, sc->dc_romwidth); 1909 break; 1910 case DC_DEVICEID_AN985: 1911 case DC_DEVICEID_ADM9511: 1912 case DC_DEVICEID_ADM9513: 1913 case DC_DEVICEID_FA511: 1914 case DC_DEVICEID_FE2500: 1915 case DC_DEVICEID_EN2242: 1916 case DC_DEVICEID_HAWKING_PN672TX: 1917 case DC_DEVICEID_3CSOHOB: 1918 case DC_DEVICEID_MSMN120: 1919 case DC_DEVICEID_MSMN130_FAKE: /* XXX avoid collision with PNIC*/ 1920 sc->dc_type = DC_TYPE_AN985; 1921 sc->dc_flags |= DC_64BIT_HASH; 1922 sc->dc_flags |= DC_TX_USE_TX_INTR; 1923 sc->dc_flags |= DC_TX_ADMTEK_WAR; 1924 sc->dc_pmode = DC_PMODE_MII; 1925 /* Don't read SROM for - auto-loaded on reset */ 1926 break; 1927 case DC_DEVICEID_98713: 1928 case DC_DEVICEID_98713_CP: 1929 if (revision < DC_REVISION_98713A) { 1930 sc->dc_type = DC_TYPE_98713; 1931 } 1932 if (revision >= DC_REVISION_98713A) { 1933 sc->dc_type = DC_TYPE_98713A; 1934 sc->dc_flags |= DC_21143_NWAY; 1935 } 1936 sc->dc_flags |= DC_REDUCED_MII_POLL; 1937 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1938 break; 1939 case DC_DEVICEID_987x5: 1940 case DC_DEVICEID_EN1217: 1941 /* 1942 * Macronix MX98715AEC-C/D/E parts have only a 1943 * 128-bit hash table. We need to deal with these 1944 * in the same manner as the PNIC II so that we 1945 * get the right number of bits out of the 1946 * CRC routine. 1947 */ 1948 if (revision >= DC_REVISION_98715AEC_C && 1949 revision < DC_REVISION_98725) 1950 sc->dc_flags |= DC_128BIT_HASH; 1951 sc->dc_type = DC_TYPE_987x5; 1952 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1953 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1954 break; 1955 case DC_DEVICEID_98727: 1956 sc->dc_type = DC_TYPE_987x5; 1957 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1958 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1959 break; 1960 case DC_DEVICEID_82C115: 1961 sc->dc_type = DC_TYPE_PNICII; 1962 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR | DC_128BIT_HASH; 1963 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1964 break; 1965 case DC_DEVICEID_82C168: 1966 sc->dc_type = DC_TYPE_PNIC; 1967 sc->dc_flags |= DC_TX_STORENFWD | DC_TX_INTR_ALWAYS; 1968 sc->dc_flags |= DC_PNIC_RX_BUG_WAR; 1969 sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, M_NOWAIT); 1970 if (revision < DC_REVISION_82C169) 1971 sc->dc_pmode = DC_PMODE_SYM; 1972 break; 1973 case DC_DEVICEID_AX88140A: 1974 sc->dc_type = DC_TYPE_ASIX; 1975 sc->dc_flags |= DC_TX_USE_TX_INTR | DC_TX_INTR_FIRSTFRAG; 1976 sc->dc_flags |= DC_REDUCED_MII_POLL; 1977 sc->dc_pmode = DC_PMODE_MII; 1978 break; 1979 case DC_DEVICEID_X3201: 1980 sc->dc_type = DC_TYPE_XIRCOM; 1981 sc->dc_flags |= DC_TX_INTR_ALWAYS | DC_TX_COALESCE | 1982 DC_TX_ALIGN; 1983 /* 1984 * We don't actually need to coalesce, but we're doing 1985 * it to obtain a double word aligned buffer. 1986 * The DC_TX_COALESCE flag is required. 1987 */ 1988 sc->dc_pmode = DC_PMODE_MII; 1989 break; 1990 case DC_DEVICEID_RS7112: 1991 sc->dc_type = DC_TYPE_CONEXANT; 1992 sc->dc_flags |= DC_TX_INTR_ALWAYS; 1993 sc->dc_flags |= DC_REDUCED_MII_POLL; 1994 sc->dc_pmode = DC_PMODE_MII; 1995 dc_read_srom(sc, sc->dc_romwidth); 1996 break; 1997 default: 1998 printf("dc%d: unknown device: %x\n", sc->dc_unit, 1999 sc->dc_info->dc_did); 2000 break; 2001 } 2002 2003 /* Save the cache line size. */ 2004 if (DC_IS_DAVICOM(sc)) 2005 sc->dc_cachesize = 0; 2006 else 2007 sc->dc_cachesize = pci_read_config(dev, 2008 DC_PCI_CFLT, 4) & 0xFF; 2009 2010 /* Reset the adapter. */ 2011 dc_reset(sc); 2012 2013 /* Take 21143 out of snooze mode */ 2014 if (DC_IS_INTEL(sc) || DC_IS_XIRCOM(sc)) { 2015 command = pci_read_config(dev, DC_PCI_CFDD, 4); 2016 command &= ~(DC_CFDD_SNOOZE_MODE | DC_CFDD_SLEEP_MODE); 2017 pci_write_config(dev, DC_PCI_CFDD, command, 4); 2018 } 2019 2020 /* 2021 * Try to learn something about the supported media. 2022 * We know that ASIX and ADMtek and Davicom devices 2023 * will *always* be using MII media, so that's a no-brainer. 2024 * The tricky ones are the Macronix/PNIC II and the 2025 * Intel 21143. 2026 */ 2027 if (DC_IS_INTEL(sc)) 2028 dc_parse_21143_srom(sc); 2029 else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 2030 if (sc->dc_type == DC_TYPE_98713) 2031 sc->dc_pmode = DC_PMODE_MII; 2032 else 2033 sc->dc_pmode = DC_PMODE_SYM; 2034 } else if (!sc->dc_pmode) 2035 sc->dc_pmode = DC_PMODE_MII; 2036 2037 /* 2038 * Get station address from the EEPROM. 2039 */ 2040 switch(sc->dc_type) { 2041 case DC_TYPE_98713: 2042 case DC_TYPE_98713A: 2043 case DC_TYPE_987x5: 2044 case DC_TYPE_PNICII: 2045 dc_read_eeprom(sc, (caddr_t)&mac_offset, 2046 (DC_EE_NODEADDR_OFFSET / 2), 1, 0); 2047 dc_read_eeprom(sc, (caddr_t)&eaddr, (mac_offset / 2), 3, 0); 2048 break; 2049 case DC_TYPE_PNIC: 2050 dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1); 2051 break; 2052 case DC_TYPE_DM9102: 2053 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2054 #ifdef __sparc64__ 2055 /* 2056 * If this is an onboard dc(4) the station address read from 2057 * the EEPROM is all zero and we have to get it from the fcode. 2058 */ 2059 for (i = 0; i < ETHER_ADDR_LEN; i++) 2060 if (eaddr[i] != 0x00) 2061 break; 2062 if (i >= ETHER_ADDR_LEN) 2063 OF_getetheraddr(dev, eaddr); 2064 #endif 2065 break; 2066 case DC_TYPE_21143: 2067 case DC_TYPE_ASIX: 2068 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2069 break; 2070 case DC_TYPE_AL981: 2071 case DC_TYPE_AN985: 2072 *(u_int32_t *)(&eaddr[0]) = CSR_READ_4(sc, DC_AL_PAR0); 2073 *(u_int16_t *)(&eaddr[4]) = CSR_READ_4(sc, DC_AL_PAR1); 2074 break; 2075 case DC_TYPE_CONEXANT: 2076 bcopy(sc->dc_srom + DC_CONEXANT_EE_NODEADDR, &eaddr, 2077 ETHER_ADDR_LEN); 2078 break; 2079 case DC_TYPE_XIRCOM: 2080 /* The MAC comes from the CIS. */ 2081 mac = pci_get_ether(dev); 2082 if (!mac) { 2083 device_printf(dev, "No station address in CIS!\n"); 2084 error = ENXIO; 2085 goto fail; 2086 } 2087 bcopy(mac, eaddr, ETHER_ADDR_LEN); 2088 break; 2089 default: 2090 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2091 break; 2092 } 2093 2094 sc->dc_unit = unit; 2095 bcopy(eaddr, &sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); 2096 2097 /* Allocate a busdma tag and DMA safe memory for TX/RX descriptors. */ 2098 error = bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, 2099 BUS_SPACE_MAXADDR, NULL, NULL, sizeof(struct dc_list_data), 1, 2100 sizeof(struct dc_list_data), 0, NULL, NULL, &sc->dc_ltag); 2101 if (error) { 2102 printf("dc%d: failed to allocate busdma tag\n", unit); 2103 error = ENXIO; 2104 goto fail; 2105 } 2106 error = bus_dmamem_alloc(sc->dc_ltag, (void **)&sc->dc_ldata, 2107 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->dc_lmap); 2108 if (error) { 2109 printf("dc%d: failed to allocate DMA safe memory\n", unit); 2110 error = ENXIO; 2111 goto fail; 2112 } 2113 error = bus_dmamap_load(sc->dc_ltag, sc->dc_lmap, sc->dc_ldata, 2114 sizeof(struct dc_list_data), dc_dma_map_addr, &sc->dc_laddr, 2115 BUS_DMA_NOWAIT); 2116 if (error) { 2117 printf("dc%d: cannot get address of the descriptors\n", unit); 2118 error = ENXIO; 2119 goto fail; 2120 } 2121 2122 /* 2123 * Allocate a busdma tag and DMA safe memory for the multicast 2124 * setup frame. 2125 */ 2126 error = bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, 2127 BUS_SPACE_MAXADDR, NULL, NULL, DC_SFRAME_LEN + DC_MIN_FRAMELEN, 1, 2128 DC_SFRAME_LEN + DC_MIN_FRAMELEN, 0, NULL, NULL, &sc->dc_stag); 2129 if (error) { 2130 printf("dc%d: failed to allocate busdma tag\n", unit); 2131 error = ENXIO; 2132 goto fail; 2133 } 2134 error = bus_dmamem_alloc(sc->dc_stag, (void **)&sc->dc_cdata.dc_sbuf, 2135 BUS_DMA_NOWAIT, &sc->dc_smap); 2136 if (error) { 2137 printf("dc%d: failed to allocate DMA safe memory\n", unit); 2138 error = ENXIO; 2139 goto fail; 2140 } 2141 error = bus_dmamap_load(sc->dc_stag, sc->dc_smap, sc->dc_cdata.dc_sbuf, 2142 DC_SFRAME_LEN, dc_dma_map_addr, &sc->dc_saddr, BUS_DMA_NOWAIT); 2143 if (error) { 2144 printf("dc%d: cannot get address of the descriptors\n", unit); 2145 error = ENXIO; 2146 goto fail; 2147 } 2148 2149 /* Allocate a busdma tag for mbufs. */ 2150 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 2151 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, DC_TX_LIST_CNT, MCLBYTES, 2152 0, NULL, NULL, &sc->dc_mtag); 2153 if (error) { 2154 printf("dc%d: failed to allocate busdma tag\n", unit); 2155 error = ENXIO; 2156 goto fail; 2157 } 2158 2159 /* Create the TX/RX busdma maps. */ 2160 for (i = 0; i < DC_TX_LIST_CNT; i++) { 2161 error = bus_dmamap_create(sc->dc_mtag, 0, 2162 &sc->dc_cdata.dc_tx_map[i]); 2163 if (error) { 2164 printf("dc%d: failed to init TX ring\n", unit); 2165 error = ENXIO; 2166 goto fail; 2167 } 2168 } 2169 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2170 error = bus_dmamap_create(sc->dc_mtag, 0, 2171 &sc->dc_cdata.dc_rx_map[i]); 2172 if (error) { 2173 printf("dc%d: failed to init RX ring\n", unit); 2174 error = ENXIO; 2175 goto fail; 2176 } 2177 } 2178 error = bus_dmamap_create(sc->dc_mtag, 0, &sc->dc_sparemap); 2179 if (error) { 2180 printf("dc%d: failed to init RX ring\n", unit); 2181 error = ENXIO; 2182 goto fail; 2183 } 2184 2185 ifp = &sc->arpcom.ac_if; 2186 ifp->if_softc = sc; 2187 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 2188 /* XXX: bleah, MTU gets overwritten in ether_ifattach() */ 2189 ifp->if_mtu = ETHERMTU; 2190 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 2191 if (!IS_MPSAFE) 2192 ifp->if_flags |= IFF_NEEDSGIANT; 2193 ifp->if_ioctl = dc_ioctl; 2194 ifp->if_start = dc_start; 2195 ifp->if_watchdog = dc_watchdog; 2196 ifp->if_init = dc_init; 2197 ifp->if_baudrate = 10000000; 2198 IFQ_SET_MAXLEN(&ifp->if_snd, DC_TX_LIST_CNT - 1); 2199 ifp->if_snd.ifq_drv_maxlen = DC_TX_LIST_CNT - 1; 2200 IFQ_SET_READY(&ifp->if_snd); 2201 2202 /* 2203 * Do MII setup. If this is a 21143, check for a PHY on the 2204 * MII bus after applying any necessary fixups to twiddle the 2205 * GPIO bits. If we don't end up finding a PHY, restore the 2206 * old selection (SIA only or SIA/SYM) and attach the dcphy 2207 * driver instead. 2208 */ 2209 if (DC_IS_INTEL(sc)) { 2210 dc_apply_fixup(sc, IFM_AUTO); 2211 tmp = sc->dc_pmode; 2212 sc->dc_pmode = DC_PMODE_MII; 2213 } 2214 2215 /* 2216 * Setup General Purpose port mode and data so the tulip can talk 2217 * to the MII. This needs to be done before mii_phy_probe so that 2218 * we can actually see them. 2219 */ 2220 if (DC_IS_XIRCOM(sc)) { 2221 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN | 2222 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 2223 DELAY(10); 2224 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN | 2225 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 2226 DELAY(10); 2227 } 2228 2229 error = mii_phy_probe(dev, &sc->dc_miibus, 2230 dc_ifmedia_upd, dc_ifmedia_sts); 2231 2232 if (error && DC_IS_INTEL(sc)) { 2233 sc->dc_pmode = tmp; 2234 if (sc->dc_pmode != DC_PMODE_SIA) 2235 sc->dc_pmode = DC_PMODE_SYM; 2236 sc->dc_flags |= DC_21143_NWAY; 2237 mii_phy_probe(dev, &sc->dc_miibus, 2238 dc_ifmedia_upd, dc_ifmedia_sts); 2239 /* 2240 * For non-MII cards, we need to have the 21143 2241 * drive the LEDs. Except there are some systems 2242 * like the NEC VersaPro NoteBook PC which have no 2243 * LEDs, and twiddling these bits has adverse effects 2244 * on them. (I.e. you suddenly can't get a link.) 2245 */ 2246 if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033) 2247 sc->dc_flags |= DC_TULIP_LEDS; 2248 error = 0; 2249 } 2250 2251 if (error) { 2252 printf("dc%d: MII without any PHY!\n", sc->dc_unit); 2253 goto fail; 2254 } 2255 2256 if (DC_IS_ADMTEK(sc)) { 2257 /* 2258 * Set automatic TX underrun recovery for the ADMtek chips 2259 */ 2260 DC_SETBIT(sc, DC_AL_CR, DC_AL_CR_ATUR); 2261 } 2262 2263 /* 2264 * Tell the upper layer(s) we support long frames. 2265 */ 2266 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 2267 ifp->if_capabilities |= IFCAP_VLAN_MTU; 2268 #ifdef DEVICE_POLLING 2269 ifp->if_capabilities |= IFCAP_POLLING; 2270 #endif 2271 ifp->if_capenable = ifp->if_capabilities; 2272 2273 callout_init(&sc->dc_stat_ch, IS_MPSAFE ? CALLOUT_MPSAFE : 0); 2274 2275 #ifdef SRM_MEDIA 2276 sc->dc_srm_media = 0; 2277 2278 /* Remember the SRM console media setting */ 2279 if (DC_IS_INTEL(sc)) { 2280 command = pci_read_config(dev, DC_PCI_CFDD, 4); 2281 command &= ~(DC_CFDD_SNOOZE_MODE | DC_CFDD_SLEEP_MODE); 2282 switch ((command >> 8) & 0xff) { 2283 case 3: 2284 sc->dc_srm_media = IFM_10_T; 2285 break; 2286 case 4: 2287 sc->dc_srm_media = IFM_10_T | IFM_FDX; 2288 break; 2289 case 5: 2290 sc->dc_srm_media = IFM_100_TX; 2291 break; 2292 case 6: 2293 sc->dc_srm_media = IFM_100_TX | IFM_FDX; 2294 break; 2295 } 2296 if (sc->dc_srm_media) 2297 sc->dc_srm_media |= IFM_ACTIVE | IFM_ETHER; 2298 } 2299 #endif 2300 2301 /* 2302 * Call MI attach routine. 2303 */ 2304 ether_ifattach(ifp, eaddr); 2305 2306 /* Hook interrupt last to avoid having to lock softc */ 2307 error = bus_setup_intr(dev, sc->dc_irq, INTR_TYPE_NET | 2308 (IS_MPSAFE ? INTR_MPSAFE : 0), 2309 dc_intr, sc, &sc->dc_intrhand); 2310 2311 if (error) { 2312 printf("dc%d: couldn't set up irq\n", unit); 2313 ether_ifdetach(ifp); 2314 goto fail; 2315 } 2316 2317 fail: 2318 if (error) 2319 dc_detach(dev); 2320 return (error); 2321 } 2322 2323 /* 2324 * Shutdown hardware and free up resources. This can be called any 2325 * time after the mutex has been initialized. It is called in both 2326 * the error case in attach and the normal detach case so it needs 2327 * to be careful about only freeing resources that have actually been 2328 * allocated. 2329 */ 2330 static int 2331 dc_detach(device_t dev) 2332 { 2333 struct dc_softc *sc; 2334 struct ifnet *ifp; 2335 struct dc_mediainfo *m; 2336 int i; 2337 2338 sc = device_get_softc(dev); 2339 KASSERT(mtx_initialized(&sc->dc_mtx), ("dc mutex not initialized")); 2340 DC_LOCK(sc); 2341 2342 ifp = &sc->arpcom.ac_if; 2343 2344 /* These should only be active if attach succeeded */ 2345 if (device_is_attached(dev)) { 2346 dc_stop(sc); 2347 ether_ifdetach(ifp); 2348 } 2349 if (sc->dc_miibus) 2350 device_delete_child(dev, sc->dc_miibus); 2351 bus_generic_detach(dev); 2352 2353 if (sc->dc_intrhand) 2354 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand); 2355 if (sc->dc_irq) 2356 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq); 2357 if (sc->dc_res) 2358 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); 2359 2360 if (sc->dc_cdata.dc_sbuf != NULL) 2361 bus_dmamem_free(sc->dc_stag, sc->dc_cdata.dc_sbuf, sc->dc_smap); 2362 if (sc->dc_ldata != NULL) 2363 bus_dmamem_free(sc->dc_ltag, sc->dc_ldata, sc->dc_lmap); 2364 for (i = 0; i < DC_TX_LIST_CNT; i++) 2365 bus_dmamap_destroy(sc->dc_mtag, sc->dc_cdata.dc_tx_map[i]); 2366 for (i = 0; i < DC_RX_LIST_CNT; i++) 2367 bus_dmamap_destroy(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i]); 2368 bus_dmamap_destroy(sc->dc_mtag, sc->dc_sparemap); 2369 if (sc->dc_stag) 2370 bus_dma_tag_destroy(sc->dc_stag); 2371 if (sc->dc_mtag) 2372 bus_dma_tag_destroy(sc->dc_mtag); 2373 if (sc->dc_ltag) 2374 bus_dma_tag_destroy(sc->dc_ltag); 2375 2376 free(sc->dc_pnic_rx_buf, M_DEVBUF); 2377 2378 while (sc->dc_mi != NULL) { 2379 m = sc->dc_mi->dc_next; 2380 free(sc->dc_mi, M_DEVBUF); 2381 sc->dc_mi = m; 2382 } 2383 free(sc->dc_srom, M_DEVBUF); 2384 2385 DC_UNLOCK(sc); 2386 mtx_destroy(&sc->dc_mtx); 2387 2388 return (0); 2389 } 2390 2391 /* 2392 * Initialize the transmit descriptors. 2393 */ 2394 static int 2395 dc_list_tx_init(struct dc_softc *sc) 2396 { 2397 struct dc_chain_data *cd; 2398 struct dc_list_data *ld; 2399 int i, nexti; 2400 2401 cd = &sc->dc_cdata; 2402 ld = sc->dc_ldata; 2403 for (i = 0; i < DC_TX_LIST_CNT; i++) { 2404 if (i == DC_TX_LIST_CNT - 1) 2405 nexti = 0; 2406 else 2407 nexti = i + 1; 2408 ld->dc_tx_list[i].dc_next = htole32(DC_TXDESC(sc, nexti)); 2409 cd->dc_tx_chain[i] = NULL; 2410 ld->dc_tx_list[i].dc_data = 0; 2411 ld->dc_tx_list[i].dc_ctl = 0; 2412 } 2413 2414 cd->dc_tx_prod = cd->dc_tx_cons = cd->dc_tx_cnt = 0; 2415 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2416 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2417 return (0); 2418 } 2419 2420 2421 /* 2422 * Initialize the RX descriptors and allocate mbufs for them. Note that 2423 * we arrange the descriptors in a closed ring, so that the last descriptor 2424 * points back to the first. 2425 */ 2426 static int 2427 dc_list_rx_init(struct dc_softc *sc) 2428 { 2429 struct dc_chain_data *cd; 2430 struct dc_list_data *ld; 2431 int i, nexti; 2432 2433 cd = &sc->dc_cdata; 2434 ld = sc->dc_ldata; 2435 2436 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2437 if (dc_newbuf(sc, i, 1) != 0) 2438 return (ENOBUFS); 2439 if (i == DC_RX_LIST_CNT - 1) 2440 nexti = 0; 2441 else 2442 nexti = i + 1; 2443 ld->dc_rx_list[i].dc_next = htole32(DC_RXDESC(sc, nexti)); 2444 } 2445 2446 cd->dc_rx_prod = 0; 2447 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2448 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2449 return (0); 2450 } 2451 2452 static void 2453 dc_dma_map_rxbuf(arg, segs, nseg, mapsize, error) 2454 void *arg; 2455 bus_dma_segment_t *segs; 2456 int nseg; 2457 bus_size_t mapsize; 2458 int error; 2459 { 2460 struct dc_softc *sc; 2461 struct dc_desc *c; 2462 2463 sc = arg; 2464 c = &sc->dc_ldata->dc_rx_list[sc->dc_cdata.dc_rx_cur]; 2465 if (error) { 2466 sc->dc_cdata.dc_rx_err = error; 2467 return; 2468 } 2469 2470 KASSERT(nseg == 1, ("wrong number of segments, should be 1")); 2471 sc->dc_cdata.dc_rx_err = 0; 2472 c->dc_data = htole32(segs->ds_addr); 2473 } 2474 2475 /* 2476 * Initialize an RX descriptor and attach an MBUF cluster. 2477 */ 2478 static int 2479 dc_newbuf(struct dc_softc *sc, int i, int alloc) 2480 { 2481 struct mbuf *m_new; 2482 bus_dmamap_t tmp; 2483 int error; 2484 2485 if (alloc) { 2486 m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2487 if (m_new == NULL) 2488 return (ENOBUFS); 2489 } else { 2490 m_new = sc->dc_cdata.dc_rx_chain[i]; 2491 m_new->m_data = m_new->m_ext.ext_buf; 2492 } 2493 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 2494 m_adj(m_new, sizeof(u_int64_t)); 2495 2496 /* 2497 * If this is a PNIC chip, zero the buffer. This is part 2498 * of the workaround for the receive bug in the 82c168 and 2499 * 82c169 chips. 2500 */ 2501 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) 2502 bzero(mtod(m_new, char *), m_new->m_len); 2503 2504 /* No need to remap the mbuf if we're reusing it. */ 2505 if (alloc) { 2506 sc->dc_cdata.dc_rx_cur = i; 2507 error = bus_dmamap_load_mbuf(sc->dc_mtag, sc->dc_sparemap, 2508 m_new, dc_dma_map_rxbuf, sc, 0); 2509 if (error) { 2510 m_freem(m_new); 2511 return (error); 2512 } 2513 if (sc->dc_cdata.dc_rx_err != 0) { 2514 m_freem(m_new); 2515 return (sc->dc_cdata.dc_rx_err); 2516 } 2517 bus_dmamap_unload(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i]); 2518 tmp = sc->dc_cdata.dc_rx_map[i]; 2519 sc->dc_cdata.dc_rx_map[i] = sc->dc_sparemap; 2520 sc->dc_sparemap = tmp; 2521 sc->dc_cdata.dc_rx_chain[i] = m_new; 2522 } 2523 2524 sc->dc_ldata->dc_rx_list[i].dc_ctl = htole32(DC_RXCTL_RLINK | DC_RXLEN); 2525 sc->dc_ldata->dc_rx_list[i].dc_status = htole32(DC_RXSTAT_OWN); 2526 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i], 2527 BUS_DMASYNC_PREREAD); 2528 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2529 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2530 return (0); 2531 } 2532 2533 /* 2534 * Grrrrr. 2535 * The PNIC chip has a terrible bug in it that manifests itself during 2536 * periods of heavy activity. The exact mode of failure if difficult to 2537 * pinpoint: sometimes it only happens in promiscuous mode, sometimes it 2538 * will happen on slow machines. The bug is that sometimes instead of 2539 * uploading one complete frame during reception, it uploads what looks 2540 * like the entire contents of its FIFO memory. The frame we want is at 2541 * the end of the whole mess, but we never know exactly how much data has 2542 * been uploaded, so salvaging the frame is hard. 2543 * 2544 * There is only one way to do it reliably, and it's disgusting. 2545 * Here's what we know: 2546 * 2547 * - We know there will always be somewhere between one and three extra 2548 * descriptors uploaded. 2549 * 2550 * - We know the desired received frame will always be at the end of the 2551 * total data upload. 2552 * 2553 * - We know the size of the desired received frame because it will be 2554 * provided in the length field of the status word in the last descriptor. 2555 * 2556 * Here's what we do: 2557 * 2558 * - When we allocate buffers for the receive ring, we bzero() them. 2559 * This means that we know that the buffer contents should be all 2560 * zeros, except for data uploaded by the chip. 2561 * 2562 * - We also force the PNIC chip to upload frames that include the 2563 * ethernet CRC at the end. 2564 * 2565 * - We gather all of the bogus frame data into a single buffer. 2566 * 2567 * - We then position a pointer at the end of this buffer and scan 2568 * backwards until we encounter the first non-zero byte of data. 2569 * This is the end of the received frame. We know we will encounter 2570 * some data at the end of the frame because the CRC will always be 2571 * there, so even if the sender transmits a packet of all zeros, 2572 * we won't be fooled. 2573 * 2574 * - We know the size of the actual received frame, so we subtract 2575 * that value from the current pointer location. This brings us 2576 * to the start of the actual received packet. 2577 * 2578 * - We copy this into an mbuf and pass it on, along with the actual 2579 * frame length. 2580 * 2581 * The performance hit is tremendous, but it beats dropping frames all 2582 * the time. 2583 */ 2584 2585 #define DC_WHOLEFRAME (DC_RXSTAT_FIRSTFRAG | DC_RXSTAT_LASTFRAG) 2586 static void 2587 dc_pnic_rx_bug_war(struct dc_softc *sc, int idx) 2588 { 2589 struct dc_desc *cur_rx; 2590 struct dc_desc *c = NULL; 2591 struct mbuf *m = NULL; 2592 unsigned char *ptr; 2593 int i, total_len; 2594 u_int32_t rxstat = 0; 2595 2596 i = sc->dc_pnic_rx_bug_save; 2597 cur_rx = &sc->dc_ldata->dc_rx_list[idx]; 2598 ptr = sc->dc_pnic_rx_buf; 2599 bzero(ptr, DC_RXLEN * 5); 2600 2601 /* Copy all the bytes from the bogus buffers. */ 2602 while (1) { 2603 c = &sc->dc_ldata->dc_rx_list[i]; 2604 rxstat = le32toh(c->dc_status); 2605 m = sc->dc_cdata.dc_rx_chain[i]; 2606 bcopy(mtod(m, char *), ptr, DC_RXLEN); 2607 ptr += DC_RXLEN; 2608 /* If this is the last buffer, break out. */ 2609 if (i == idx || rxstat & DC_RXSTAT_LASTFRAG) 2610 break; 2611 dc_newbuf(sc, i, 0); 2612 DC_INC(i, DC_RX_LIST_CNT); 2613 } 2614 2615 /* Find the length of the actual receive frame. */ 2616 total_len = DC_RXBYTES(rxstat); 2617 2618 /* Scan backwards until we hit a non-zero byte. */ 2619 while (*ptr == 0x00) 2620 ptr--; 2621 2622 /* Round off. */ 2623 if ((uintptr_t)(ptr) & 0x3) 2624 ptr -= 1; 2625 2626 /* Now find the start of the frame. */ 2627 ptr -= total_len; 2628 if (ptr < sc->dc_pnic_rx_buf) 2629 ptr = sc->dc_pnic_rx_buf; 2630 2631 /* 2632 * Now copy the salvaged frame to the last mbuf and fake up 2633 * the status word to make it look like a successful 2634 * frame reception. 2635 */ 2636 dc_newbuf(sc, i, 0); 2637 bcopy(ptr, mtod(m, char *), total_len); 2638 cur_rx->dc_status = htole32(rxstat | DC_RXSTAT_FIRSTFRAG); 2639 } 2640 2641 /* 2642 * This routine searches the RX ring for dirty descriptors in the 2643 * event that the rxeof routine falls out of sync with the chip's 2644 * current descriptor pointer. This may happen sometimes as a result 2645 * of a "no RX buffer available" condition that happens when the chip 2646 * consumes all of the RX buffers before the driver has a chance to 2647 * process the RX ring. This routine may need to be called more than 2648 * once to bring the driver back in sync with the chip, however we 2649 * should still be getting RX DONE interrupts to drive the search 2650 * for new packets in the RX ring, so we should catch up eventually. 2651 */ 2652 static int 2653 dc_rx_resync(struct dc_softc *sc) 2654 { 2655 struct dc_desc *cur_rx; 2656 int i, pos; 2657 2658 pos = sc->dc_cdata.dc_rx_prod; 2659 2660 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2661 cur_rx = &sc->dc_ldata->dc_rx_list[pos]; 2662 if (!(le32toh(cur_rx->dc_status) & DC_RXSTAT_OWN)) 2663 break; 2664 DC_INC(pos, DC_RX_LIST_CNT); 2665 } 2666 2667 /* If the ring really is empty, then just return. */ 2668 if (i == DC_RX_LIST_CNT) 2669 return (0); 2670 2671 /* We've fallen behing the chip: catch it. */ 2672 sc->dc_cdata.dc_rx_prod = pos; 2673 2674 return (EAGAIN); 2675 } 2676 2677 /* 2678 * A frame has been uploaded: pass the resulting mbuf chain up to 2679 * the higher level protocols. 2680 */ 2681 static void 2682 dc_rxeof(struct dc_softc *sc) 2683 { 2684 struct mbuf *m; 2685 struct ifnet *ifp; 2686 struct dc_desc *cur_rx; 2687 int i, total_len = 0; 2688 u_int32_t rxstat; 2689 2690 DC_LOCK_ASSERT(sc); 2691 2692 ifp = &sc->arpcom.ac_if; 2693 i = sc->dc_cdata.dc_rx_prod; 2694 2695 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, BUS_DMASYNC_POSTREAD); 2696 while (!(le32toh(sc->dc_ldata->dc_rx_list[i].dc_status) & 2697 DC_RXSTAT_OWN)) { 2698 #ifdef DEVICE_POLLING 2699 if (ifp->if_flags & IFF_POLLING) { 2700 if (sc->rxcycles <= 0) 2701 break; 2702 sc->rxcycles--; 2703 } 2704 #endif 2705 cur_rx = &sc->dc_ldata->dc_rx_list[i]; 2706 rxstat = le32toh(cur_rx->dc_status); 2707 m = sc->dc_cdata.dc_rx_chain[i]; 2708 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i], 2709 BUS_DMASYNC_POSTREAD); 2710 total_len = DC_RXBYTES(rxstat); 2711 2712 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) { 2713 if ((rxstat & DC_WHOLEFRAME) != DC_WHOLEFRAME) { 2714 if (rxstat & DC_RXSTAT_FIRSTFRAG) 2715 sc->dc_pnic_rx_bug_save = i; 2716 if ((rxstat & DC_RXSTAT_LASTFRAG) == 0) { 2717 DC_INC(i, DC_RX_LIST_CNT); 2718 continue; 2719 } 2720 dc_pnic_rx_bug_war(sc, i); 2721 rxstat = le32toh(cur_rx->dc_status); 2722 total_len = DC_RXBYTES(rxstat); 2723 } 2724 } 2725 2726 /* 2727 * If an error occurs, update stats, clear the 2728 * status word and leave the mbuf cluster in place: 2729 * it should simply get re-used next time this descriptor 2730 * comes up in the ring. However, don't report long 2731 * frames as errors since they could be vlans. 2732 */ 2733 if ((rxstat & DC_RXSTAT_RXERR)) { 2734 if (!(rxstat & DC_RXSTAT_GIANT) || 2735 (rxstat & (DC_RXSTAT_CRCERR | DC_RXSTAT_DRIBBLE | 2736 DC_RXSTAT_MIIERE | DC_RXSTAT_COLLSEEN | 2737 DC_RXSTAT_RUNT | DC_RXSTAT_DE))) { 2738 ifp->if_ierrors++; 2739 if (rxstat & DC_RXSTAT_COLLSEEN) 2740 ifp->if_collisions++; 2741 dc_newbuf(sc, i, 0); 2742 if (rxstat & DC_RXSTAT_CRCERR) { 2743 DC_INC(i, DC_RX_LIST_CNT); 2744 continue; 2745 } else { 2746 dc_init(sc); 2747 return; 2748 } 2749 } 2750 } 2751 2752 /* No errors; receive the packet. */ 2753 total_len -= ETHER_CRC_LEN; 2754 #ifdef __i386__ 2755 /* 2756 * On the x86 we do not have alignment problems, so try to 2757 * allocate a new buffer for the receive ring, and pass up 2758 * the one where the packet is already, saving the expensive 2759 * copy done in m_devget(). 2760 * If we are on an architecture with alignment problems, or 2761 * if the allocation fails, then use m_devget and leave the 2762 * existing buffer in the receive ring. 2763 */ 2764 if (dc_quick && dc_newbuf(sc, i, 1) == 0) { 2765 m->m_pkthdr.rcvif = ifp; 2766 m->m_pkthdr.len = m->m_len = total_len; 2767 DC_INC(i, DC_RX_LIST_CNT); 2768 } else 2769 #endif 2770 { 2771 struct mbuf *m0; 2772 2773 m0 = m_devget(mtod(m, char *), total_len, 2774 ETHER_ALIGN, ifp, NULL); 2775 dc_newbuf(sc, i, 0); 2776 DC_INC(i, DC_RX_LIST_CNT); 2777 if (m0 == NULL) { 2778 ifp->if_ierrors++; 2779 continue; 2780 } 2781 m = m0; 2782 } 2783 2784 ifp->if_ipackets++; 2785 DC_UNLOCK(sc); 2786 (*ifp->if_input)(ifp, m); 2787 DC_LOCK(sc); 2788 } 2789 2790 sc->dc_cdata.dc_rx_prod = i; 2791 } 2792 2793 /* 2794 * A frame was downloaded to the chip. It's safe for us to clean up 2795 * the list buffers. 2796 */ 2797 2798 static void 2799 dc_txeof(struct dc_softc *sc) 2800 { 2801 struct dc_desc *cur_tx = NULL; 2802 struct ifnet *ifp; 2803 int idx; 2804 u_int32_t ctl, txstat; 2805 2806 ifp = &sc->arpcom.ac_if; 2807 2808 /* 2809 * Go through our tx list and free mbufs for those 2810 * frames that have been transmitted. 2811 */ 2812 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, BUS_DMASYNC_POSTREAD); 2813 idx = sc->dc_cdata.dc_tx_cons; 2814 while (idx != sc->dc_cdata.dc_tx_prod) { 2815 2816 cur_tx = &sc->dc_ldata->dc_tx_list[idx]; 2817 txstat = le32toh(cur_tx->dc_status); 2818 ctl = le32toh(cur_tx->dc_ctl); 2819 2820 if (txstat & DC_TXSTAT_OWN) 2821 break; 2822 2823 if (!(ctl & DC_TXCTL_LASTFRAG) || ctl & DC_TXCTL_SETUP) { 2824 if (ctl & DC_TXCTL_SETUP) { 2825 /* 2826 * Yes, the PNIC is so brain damaged 2827 * that it will sometimes generate a TX 2828 * underrun error while DMAing the RX 2829 * filter setup frame. If we detect this, 2830 * we have to send the setup frame again, 2831 * or else the filter won't be programmed 2832 * correctly. 2833 */ 2834 if (DC_IS_PNIC(sc)) { 2835 if (txstat & DC_TXSTAT_ERRSUM) 2836 dc_setfilt(sc); 2837 } 2838 sc->dc_cdata.dc_tx_chain[idx] = NULL; 2839 } 2840 sc->dc_cdata.dc_tx_cnt--; 2841 DC_INC(idx, DC_TX_LIST_CNT); 2842 continue; 2843 } 2844 2845 if (DC_IS_XIRCOM(sc) || DC_IS_CONEXANT(sc)) { 2846 /* 2847 * XXX: Why does my Xircom taunt me so? 2848 * For some reason it likes setting the CARRLOST flag 2849 * even when the carrier is there. wtf?!? 2850 * Who knows, but Conexant chips have the 2851 * same problem. Maybe they took lessons 2852 * from Xircom. 2853 */ 2854 if (/*sc->dc_type == DC_TYPE_21143 &&*/ 2855 sc->dc_pmode == DC_PMODE_MII && 2856 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM | 2857 DC_TXSTAT_NOCARRIER))) 2858 txstat &= ~DC_TXSTAT_ERRSUM; 2859 } else { 2860 if (/*sc->dc_type == DC_TYPE_21143 &&*/ 2861 sc->dc_pmode == DC_PMODE_MII && 2862 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM | 2863 DC_TXSTAT_NOCARRIER | DC_TXSTAT_CARRLOST))) 2864 txstat &= ~DC_TXSTAT_ERRSUM; 2865 } 2866 2867 if (txstat & DC_TXSTAT_ERRSUM) { 2868 ifp->if_oerrors++; 2869 if (txstat & DC_TXSTAT_EXCESSCOLL) 2870 ifp->if_collisions++; 2871 if (txstat & DC_TXSTAT_LATECOLL) 2872 ifp->if_collisions++; 2873 if (!(txstat & DC_TXSTAT_UNDERRUN)) { 2874 dc_init(sc); 2875 return; 2876 } 2877 } 2878 2879 ifp->if_collisions += (txstat & DC_TXSTAT_COLLCNT) >> 3; 2880 2881 ifp->if_opackets++; 2882 if (sc->dc_cdata.dc_tx_chain[idx] != NULL) { 2883 bus_dmamap_sync(sc->dc_mtag, 2884 sc->dc_cdata.dc_tx_map[idx], 2885 BUS_DMASYNC_POSTWRITE); 2886 bus_dmamap_unload(sc->dc_mtag, 2887 sc->dc_cdata.dc_tx_map[idx]); 2888 m_freem(sc->dc_cdata.dc_tx_chain[idx]); 2889 sc->dc_cdata.dc_tx_chain[idx] = NULL; 2890 } 2891 2892 sc->dc_cdata.dc_tx_cnt--; 2893 DC_INC(idx, DC_TX_LIST_CNT); 2894 } 2895 2896 if (idx != sc->dc_cdata.dc_tx_cons) { 2897 /* Some buffers have been freed. */ 2898 sc->dc_cdata.dc_tx_cons = idx; 2899 ifp->if_flags &= ~IFF_OACTIVE; 2900 } 2901 ifp->if_timer = (sc->dc_cdata.dc_tx_cnt == 0) ? 0 : 5; 2902 } 2903 2904 static void 2905 dc_tick(void *xsc) 2906 { 2907 struct dc_softc *sc; 2908 struct mii_data *mii; 2909 struct ifnet *ifp; 2910 u_int32_t r; 2911 2912 sc = xsc; 2913 DC_LOCK(sc); 2914 ifp = &sc->arpcom.ac_if; 2915 mii = device_get_softc(sc->dc_miibus); 2916 2917 if (sc->dc_flags & DC_REDUCED_MII_POLL) { 2918 if (sc->dc_flags & DC_21143_NWAY) { 2919 r = CSR_READ_4(sc, DC_10BTSTAT); 2920 if (IFM_SUBTYPE(mii->mii_media_active) == 2921 IFM_100_TX && (r & DC_TSTAT_LS100)) { 2922 sc->dc_link = 0; 2923 mii_mediachg(mii); 2924 } 2925 if (IFM_SUBTYPE(mii->mii_media_active) == 2926 IFM_10_T && (r & DC_TSTAT_LS10)) { 2927 sc->dc_link = 0; 2928 mii_mediachg(mii); 2929 } 2930 if (sc->dc_link == 0) 2931 mii_tick(mii); 2932 } else { 2933 r = CSR_READ_4(sc, DC_ISR); 2934 if ((r & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT && 2935 sc->dc_cdata.dc_tx_cnt == 0) { 2936 mii_tick(mii); 2937 if (!(mii->mii_media_status & IFM_ACTIVE)) 2938 sc->dc_link = 0; 2939 } 2940 } 2941 } else 2942 mii_tick(mii); 2943 2944 /* 2945 * When the init routine completes, we expect to be able to send 2946 * packets right away, and in fact the network code will send a 2947 * gratuitous ARP the moment the init routine marks the interface 2948 * as running. However, even though the MAC may have been initialized, 2949 * there may be a delay of a few seconds before the PHY completes 2950 * autonegotiation and the link is brought up. Any transmissions 2951 * made during that delay will be lost. Dealing with this is tricky: 2952 * we can't just pause in the init routine while waiting for the 2953 * PHY to come ready since that would bring the whole system to 2954 * a screeching halt for several seconds. 2955 * 2956 * What we do here is prevent the TX start routine from sending 2957 * any packets until a link has been established. After the 2958 * interface has been initialized, the tick routine will poll 2959 * the state of the PHY until the IFM_ACTIVE flag is set. Until 2960 * that time, packets will stay in the send queue, and once the 2961 * link comes up, they will be flushed out to the wire. 2962 */ 2963 if (!sc->dc_link && mii->mii_media_status & IFM_ACTIVE && 2964 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 2965 sc->dc_link++; 2966 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 2967 dc_start(ifp); 2968 } 2969 2970 if (sc->dc_flags & DC_21143_NWAY && !sc->dc_link) 2971 callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc); 2972 else 2973 callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc); 2974 2975 DC_UNLOCK(sc); 2976 } 2977 2978 /* 2979 * A transmit underrun has occurred. Back off the transmit threshold, 2980 * or switch to store and forward mode if we have to. 2981 */ 2982 static void 2983 dc_tx_underrun(struct dc_softc *sc) 2984 { 2985 u_int32_t isr; 2986 int i; 2987 2988 if (DC_IS_DAVICOM(sc)) 2989 dc_init(sc); 2990 2991 if (DC_IS_INTEL(sc)) { 2992 /* 2993 * The real 21143 requires that the transmitter be idle 2994 * in order to change the transmit threshold or store 2995 * and forward state. 2996 */ 2997 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 2998 2999 for (i = 0; i < DC_TIMEOUT; i++) { 3000 isr = CSR_READ_4(sc, DC_ISR); 3001 if (isr & DC_ISR_TX_IDLE) 3002 break; 3003 DELAY(10); 3004 } 3005 if (i == DC_TIMEOUT) { 3006 printf("dc%d: failed to force tx to idle state\n", 3007 sc->dc_unit); 3008 dc_init(sc); 3009 } 3010 } 3011 3012 printf("dc%d: TX underrun -- ", sc->dc_unit); 3013 sc->dc_txthresh += DC_TXTHRESH_INC; 3014 if (sc->dc_txthresh > DC_TXTHRESH_MAX) { 3015 printf("using store and forward mode\n"); 3016 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3017 } else { 3018 printf("increasing TX threshold\n"); 3019 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); 3020 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); 3021 } 3022 3023 if (DC_IS_INTEL(sc)) 3024 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3025 } 3026 3027 #ifdef DEVICE_POLLING 3028 static poll_handler_t dc_poll; 3029 3030 static void 3031 dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 3032 { 3033 struct dc_softc *sc = ifp->if_softc; 3034 3035 if (!(ifp->if_capenable & IFCAP_POLLING)) { 3036 ether_poll_deregister(ifp); 3037 cmd = POLL_DEREGISTER; 3038 } 3039 if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */ 3040 /* Re-enable interrupts. */ 3041 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3042 return; 3043 } 3044 DC_LOCK(sc); 3045 sc->rxcycles = count; 3046 dc_rxeof(sc); 3047 dc_txeof(sc); 3048 if (!IFQ_IS_EMPTY(&ifp->if_snd) && !(ifp->if_flags & IFF_OACTIVE)) 3049 dc_start(ifp); 3050 3051 if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */ 3052 u_int32_t status; 3053 3054 status = CSR_READ_4(sc, DC_ISR); 3055 status &= (DC_ISR_RX_WATDOGTIMEO | DC_ISR_RX_NOBUF | 3056 DC_ISR_TX_NOBUF | DC_ISR_TX_IDLE | DC_ISR_TX_UNDERRUN | 3057 DC_ISR_BUS_ERR); 3058 if (!status) { 3059 DC_UNLOCK(sc); 3060 return; 3061 } 3062 /* ack what we have */ 3063 CSR_WRITE_4(sc, DC_ISR, status); 3064 3065 if (status & (DC_ISR_RX_WATDOGTIMEO | DC_ISR_RX_NOBUF)) { 3066 u_int32_t r = CSR_READ_4(sc, DC_FRAMESDISCARDED); 3067 ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff); 3068 3069 if (dc_rx_resync(sc)) 3070 dc_rxeof(sc); 3071 } 3072 /* restart transmit unit if necessary */ 3073 if (status & DC_ISR_TX_IDLE && sc->dc_cdata.dc_tx_cnt) 3074 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3075 3076 if (status & DC_ISR_TX_UNDERRUN) 3077 dc_tx_underrun(sc); 3078 3079 if (status & DC_ISR_BUS_ERR) { 3080 printf("dc_poll: dc%d bus error\n", sc->dc_unit); 3081 dc_reset(sc); 3082 dc_init(sc); 3083 } 3084 } 3085 DC_UNLOCK(sc); 3086 } 3087 #endif /* DEVICE_POLLING */ 3088 3089 static void 3090 dc_intr(void *arg) 3091 { 3092 struct dc_softc *sc; 3093 struct ifnet *ifp; 3094 u_int32_t status; 3095 3096 sc = arg; 3097 3098 if (sc->suspended) 3099 return; 3100 3101 if ((CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0) 3102 return; 3103 3104 DC_LOCK(sc); 3105 ifp = &sc->arpcom.ac_if; 3106 #ifdef DEVICE_POLLING 3107 if (ifp->if_flags & IFF_POLLING) 3108 goto done; 3109 if ((ifp->if_capenable & IFCAP_POLLING) && 3110 ether_poll_register(dc_poll, ifp)) { /* ok, disable interrupts */ 3111 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3112 goto done; 3113 } 3114 #endif 3115 3116 /* Suppress unwanted interrupts */ 3117 if (!(ifp->if_flags & IFF_UP)) { 3118 if (CSR_READ_4(sc, DC_ISR) & DC_INTRS) 3119 dc_stop(sc); 3120 DC_UNLOCK(sc); 3121 return; 3122 } 3123 3124 /* Disable interrupts. */ 3125 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3126 3127 while (((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) 3128 && status != 0xFFFFFFFF) { 3129 3130 CSR_WRITE_4(sc, DC_ISR, status); 3131 3132 if (status & DC_ISR_RX_OK) { 3133 int curpkts; 3134 curpkts = ifp->if_ipackets; 3135 dc_rxeof(sc); 3136 if (curpkts == ifp->if_ipackets) { 3137 while (dc_rx_resync(sc)) 3138 dc_rxeof(sc); 3139 } 3140 } 3141 3142 if (status & (DC_ISR_TX_OK | DC_ISR_TX_NOBUF)) 3143 dc_txeof(sc); 3144 3145 if (status & DC_ISR_TX_IDLE) { 3146 dc_txeof(sc); 3147 if (sc->dc_cdata.dc_tx_cnt) { 3148 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3149 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3150 } 3151 } 3152 3153 if (status & DC_ISR_TX_UNDERRUN) 3154 dc_tx_underrun(sc); 3155 3156 if ((status & DC_ISR_RX_WATDOGTIMEO) 3157 || (status & DC_ISR_RX_NOBUF)) { 3158 int curpkts; 3159 curpkts = ifp->if_ipackets; 3160 dc_rxeof(sc); 3161 if (curpkts == ifp->if_ipackets) { 3162 while (dc_rx_resync(sc)) 3163 dc_rxeof(sc); 3164 } 3165 } 3166 3167 if (status & DC_ISR_BUS_ERR) { 3168 dc_reset(sc); 3169 dc_init(sc); 3170 } 3171 } 3172 3173 /* Re-enable interrupts. */ 3174 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3175 3176 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 3177 dc_start(ifp); 3178 3179 #ifdef DEVICE_POLLING 3180 done: 3181 #endif 3182 3183 DC_UNLOCK(sc); 3184 } 3185 3186 static void 3187 dc_dma_map_txbuf(arg, segs, nseg, mapsize, error) 3188 void *arg; 3189 bus_dma_segment_t *segs; 3190 int nseg; 3191 bus_size_t mapsize; 3192 int error; 3193 { 3194 struct dc_softc *sc; 3195 struct dc_desc *f; 3196 int cur, first, frag, i; 3197 3198 sc = arg; 3199 if (error) { 3200 sc->dc_cdata.dc_tx_err = error; 3201 return; 3202 } 3203 3204 first = cur = frag = sc->dc_cdata.dc_tx_prod; 3205 for (i = 0; i < nseg; i++) { 3206 if ((sc->dc_flags & DC_TX_ADMTEK_WAR) && 3207 (frag == (DC_TX_LIST_CNT - 1)) && 3208 (first != sc->dc_cdata.dc_tx_first)) { 3209 bus_dmamap_unload(sc->dc_mtag, 3210 sc->dc_cdata.dc_tx_map[first]); 3211 sc->dc_cdata.dc_tx_err = ENOBUFS; 3212 return; 3213 } 3214 3215 f = &sc->dc_ldata->dc_tx_list[frag]; 3216 f->dc_ctl = htole32(DC_TXCTL_TLINK | segs[i].ds_len); 3217 if (i == 0) { 3218 f->dc_status = 0; 3219 f->dc_ctl |= htole32(DC_TXCTL_FIRSTFRAG); 3220 } else 3221 f->dc_status = htole32(DC_TXSTAT_OWN); 3222 f->dc_data = htole32(segs[i].ds_addr); 3223 cur = frag; 3224 DC_INC(frag, DC_TX_LIST_CNT); 3225 } 3226 3227 sc->dc_cdata.dc_tx_err = 0; 3228 sc->dc_cdata.dc_tx_prod = frag; 3229 sc->dc_cdata.dc_tx_cnt += nseg; 3230 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_LASTFRAG); 3231 sc->dc_cdata.dc_tx_chain[cur] = sc->dc_cdata.dc_tx_mapping; 3232 if (sc->dc_flags & DC_TX_INTR_FIRSTFRAG) 3233 sc->dc_ldata->dc_tx_list[first].dc_ctl |= 3234 htole32(DC_TXCTL_FINT); 3235 if (sc->dc_flags & DC_TX_INTR_ALWAYS) 3236 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_FINT); 3237 if (sc->dc_flags & DC_TX_USE_TX_INTR && sc->dc_cdata.dc_tx_cnt > 64) 3238 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_FINT); 3239 sc->dc_ldata->dc_tx_list[first].dc_status = htole32(DC_TXSTAT_OWN); 3240 } 3241 3242 /* 3243 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 3244 * pointers to the fragment pointers. 3245 */ 3246 static int 3247 dc_encap(struct dc_softc *sc, struct mbuf **m_head) 3248 { 3249 struct mbuf *m; 3250 int error, idx, chainlen = 0; 3251 3252 /* 3253 * If there's no way we can send any packets, return now. 3254 */ 3255 if (DC_TX_LIST_CNT - sc->dc_cdata.dc_tx_cnt < 6) 3256 return (ENOBUFS); 3257 3258 /* 3259 * Count the number of frags in this chain to see if 3260 * we need to m_defrag. Since the descriptor list is shared 3261 * by all packets, we'll m_defrag long chains so that they 3262 * do not use up the entire list, even if they would fit. 3263 */ 3264 for (m = *m_head; m != NULL; m = m->m_next) 3265 chainlen++; 3266 3267 if ((chainlen > DC_TX_LIST_CNT / 4) || 3268 ((DC_TX_LIST_CNT - (chainlen + sc->dc_cdata.dc_tx_cnt)) < 6)) { 3269 m = m_defrag(*m_head, M_DONTWAIT); 3270 if (m == NULL) 3271 return (ENOBUFS); 3272 *m_head = m; 3273 } 3274 3275 /* 3276 * Start packing the mbufs in this chain into 3277 * the fragment pointers. Stop when we run out 3278 * of fragments or hit the end of the mbuf chain. 3279 */ 3280 idx = sc->dc_cdata.dc_tx_prod; 3281 sc->dc_cdata.dc_tx_mapping = *m_head; 3282 error = bus_dmamap_load_mbuf(sc->dc_mtag, sc->dc_cdata.dc_tx_map[idx], 3283 *m_head, dc_dma_map_txbuf, sc, 0); 3284 if (error) 3285 return (error); 3286 if (sc->dc_cdata.dc_tx_err != 0) 3287 return (sc->dc_cdata.dc_tx_err); 3288 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_tx_map[idx], 3289 BUS_DMASYNC_PREWRITE); 3290 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 3291 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3292 return (0); 3293 } 3294 3295 /* 3296 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 3297 * to the mbuf data regions directly in the transmit lists. We also save a 3298 * copy of the pointers since the transmit list fragment pointers are 3299 * physical addresses. 3300 */ 3301 3302 static void 3303 dc_start(struct ifnet *ifp) 3304 { 3305 struct dc_softc *sc; 3306 struct mbuf *m_head = NULL, *m; 3307 unsigned int queued = 0; 3308 int idx; 3309 3310 sc = ifp->if_softc; 3311 3312 DC_LOCK(sc); 3313 3314 if (!sc->dc_link && ifp->if_snd.ifq_len < 10) { 3315 DC_UNLOCK(sc); 3316 return; 3317 } 3318 3319 if (ifp->if_flags & IFF_OACTIVE) { 3320 DC_UNLOCK(sc); 3321 return; 3322 } 3323 3324 idx = sc->dc_cdata.dc_tx_first = sc->dc_cdata.dc_tx_prod; 3325 3326 while (sc->dc_cdata.dc_tx_chain[idx] == NULL) { 3327 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 3328 if (m_head == NULL) 3329 break; 3330 3331 if (sc->dc_flags & DC_TX_COALESCE && 3332 (m_head->m_next != NULL || 3333 sc->dc_flags & DC_TX_ALIGN)) { 3334 m = m_defrag(m_head, M_DONTWAIT); 3335 if (m == NULL) { 3336 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 3337 ifp->if_flags |= IFF_OACTIVE; 3338 break; 3339 } else { 3340 m_head = m; 3341 } 3342 } 3343 3344 if (dc_encap(sc, &m_head)) { 3345 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 3346 ifp->if_flags |= IFF_OACTIVE; 3347 break; 3348 } 3349 idx = sc->dc_cdata.dc_tx_prod; 3350 3351 queued++; 3352 /* 3353 * If there's a BPF listener, bounce a copy of this frame 3354 * to him. 3355 */ 3356 BPF_MTAP(ifp, m_head); 3357 3358 if (sc->dc_flags & DC_TX_ONE) { 3359 ifp->if_flags |= IFF_OACTIVE; 3360 break; 3361 } 3362 } 3363 3364 if (queued > 0) { 3365 /* Transmit */ 3366 if (!(sc->dc_flags & DC_TX_POLL)) 3367 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3368 3369 /* 3370 * Set a timeout in case the chip goes out to lunch. 3371 */ 3372 ifp->if_timer = 5; 3373 } 3374 3375 DC_UNLOCK(sc); 3376 } 3377 3378 static void 3379 dc_init(void *xsc) 3380 { 3381 struct dc_softc *sc = xsc; 3382 struct ifnet *ifp = &sc->arpcom.ac_if; 3383 struct mii_data *mii; 3384 3385 DC_LOCK(sc); 3386 3387 mii = device_get_softc(sc->dc_miibus); 3388 3389 /* 3390 * Cancel pending I/O and free all RX/TX buffers. 3391 */ 3392 dc_stop(sc); 3393 dc_reset(sc); 3394 3395 /* 3396 * Set cache alignment and burst length. 3397 */ 3398 if (DC_IS_ASIX(sc) || DC_IS_DAVICOM(sc)) 3399 CSR_WRITE_4(sc, DC_BUSCTL, 0); 3400 else 3401 CSR_WRITE_4(sc, DC_BUSCTL, DC_BUSCTL_MRME | DC_BUSCTL_MRLE); 3402 /* 3403 * Evenly share the bus between receive and transmit process. 3404 */ 3405 if (DC_IS_INTEL(sc)) 3406 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_ARBITRATION); 3407 if (DC_IS_DAVICOM(sc) || DC_IS_INTEL(sc)) { 3408 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_USECA); 3409 } else { 3410 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_16LONG); 3411 } 3412 if (sc->dc_flags & DC_TX_POLL) 3413 DC_SETBIT(sc, DC_BUSCTL, DC_TXPOLL_1); 3414 switch(sc->dc_cachesize) { 3415 case 32: 3416 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_32LONG); 3417 break; 3418 case 16: 3419 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_16LONG); 3420 break; 3421 case 8: 3422 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_8LONG); 3423 break; 3424 case 0: 3425 default: 3426 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_NONE); 3427 break; 3428 } 3429 3430 if (sc->dc_flags & DC_TX_STORENFWD) 3431 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3432 else { 3433 if (sc->dc_txthresh > DC_TXTHRESH_MAX) { 3434 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3435 } else { 3436 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3437 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); 3438 } 3439 } 3440 3441 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_NO_RXCRC); 3442 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_BACKOFF); 3443 3444 if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 3445 /* 3446 * The app notes for the 98713 and 98715A say that 3447 * in order to have the chips operate properly, a magic 3448 * number must be written to CSR16. Macronix does not 3449 * document the meaning of these bits so there's no way 3450 * to know exactly what they do. The 98713 has a magic 3451 * number all its own; the rest all use a different one. 3452 */ 3453 DC_CLRBIT(sc, DC_MX_MAGICPACKET, 0xFFFF0000); 3454 if (sc->dc_type == DC_TYPE_98713) 3455 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98713); 3456 else 3457 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98715); 3458 } 3459 3460 if (DC_IS_XIRCOM(sc)) { 3461 /* 3462 * setup General Purpose Port mode and data so the tulip 3463 * can talk to the MII. 3464 */ 3465 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN | 3466 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 3467 DELAY(10); 3468 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN | 3469 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 3470 DELAY(10); 3471 } 3472 3473 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); 3474 DC_SETBIT(sc, DC_NETCFG, DC_TXTHRESH_MIN); 3475 3476 /* Init circular RX list. */ 3477 if (dc_list_rx_init(sc) == ENOBUFS) { 3478 printf("dc%d: initialization failed: no " 3479 "memory for rx buffers\n", sc->dc_unit); 3480 dc_stop(sc); 3481 DC_UNLOCK(sc); 3482 return; 3483 } 3484 3485 /* 3486 * Init TX descriptors. 3487 */ 3488 dc_list_tx_init(sc); 3489 3490 /* 3491 * Load the address of the RX list. 3492 */ 3493 CSR_WRITE_4(sc, DC_RXADDR, DC_RXDESC(sc, 0)); 3494 CSR_WRITE_4(sc, DC_TXADDR, DC_TXDESC(sc, 0)); 3495 3496 /* 3497 * Enable interrupts. 3498 */ 3499 #ifdef DEVICE_POLLING 3500 /* 3501 * ... but only if we are not polling, and make sure they are off in 3502 * the case of polling. Some cards (e.g. fxp) turn interrupts on 3503 * after a reset. 3504 */ 3505 if (ifp->if_flags & IFF_POLLING) 3506 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3507 else 3508 #endif 3509 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3510 CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF); 3511 3512 /* Enable transmitter. */ 3513 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3514 3515 /* 3516 * If this is an Intel 21143 and we're not using the 3517 * MII port, program the LED control pins so we get 3518 * link and activity indications. 3519 */ 3520 if (sc->dc_flags & DC_TULIP_LEDS) { 3521 CSR_WRITE_4(sc, DC_WATCHDOG, 3522 DC_WDOG_CTLWREN | DC_WDOG_LINK | DC_WDOG_ACTIVITY); 3523 CSR_WRITE_4(sc, DC_WATCHDOG, 0); 3524 } 3525 3526 /* 3527 * Load the RX/multicast filter. We do this sort of late 3528 * because the filter programming scheme on the 21143 and 3529 * some clones requires DMAing a setup frame via the TX 3530 * engine, and we need the transmitter enabled for that. 3531 */ 3532 dc_setfilt(sc); 3533 3534 /* Enable receiver. */ 3535 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); 3536 CSR_WRITE_4(sc, DC_RXSTART, 0xFFFFFFFF); 3537 3538 mii_mediachg(mii); 3539 dc_setcfg(sc, sc->dc_if_media); 3540 3541 ifp->if_flags |= IFF_RUNNING; 3542 ifp->if_flags &= ~IFF_OACTIVE; 3543 3544 /* Don't start the ticker if this is a homePNA link. */ 3545 if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1) 3546 sc->dc_link = 1; 3547 else { 3548 if (sc->dc_flags & DC_21143_NWAY) 3549 callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc); 3550 else 3551 callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc); 3552 } 3553 3554 #ifdef SRM_MEDIA 3555 if(sc->dc_srm_media) { 3556 struct ifreq ifr; 3557 3558 ifr.ifr_media = sc->dc_srm_media; 3559 ifmedia_ioctl(ifp, &ifr, &mii->mii_media, SIOCSIFMEDIA); 3560 sc->dc_srm_media = 0; 3561 } 3562 #endif 3563 DC_UNLOCK(sc); 3564 } 3565 3566 /* 3567 * Set media options. 3568 */ 3569 static int 3570 dc_ifmedia_upd(struct ifnet *ifp) 3571 { 3572 struct dc_softc *sc; 3573 struct mii_data *mii; 3574 struct ifmedia *ifm; 3575 3576 sc = ifp->if_softc; 3577 mii = device_get_softc(sc->dc_miibus); 3578 mii_mediachg(mii); 3579 ifm = &mii->mii_media; 3580 3581 if (DC_IS_DAVICOM(sc) && 3582 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) 3583 dc_setcfg(sc, ifm->ifm_media); 3584 else 3585 sc->dc_link = 0; 3586 3587 return (0); 3588 } 3589 3590 /* 3591 * Report current media status. 3592 */ 3593 static void 3594 dc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 3595 { 3596 struct dc_softc *sc; 3597 struct mii_data *mii; 3598 struct ifmedia *ifm; 3599 3600 sc = ifp->if_softc; 3601 mii = device_get_softc(sc->dc_miibus); 3602 mii_pollstat(mii); 3603 ifm = &mii->mii_media; 3604 if (DC_IS_DAVICOM(sc)) { 3605 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) { 3606 ifmr->ifm_active = ifm->ifm_media; 3607 ifmr->ifm_status = 0; 3608 return; 3609 } 3610 } 3611 ifmr->ifm_active = mii->mii_media_active; 3612 ifmr->ifm_status = mii->mii_media_status; 3613 } 3614 3615 static int 3616 dc_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 3617 { 3618 struct dc_softc *sc = ifp->if_softc; 3619 struct ifreq *ifr = (struct ifreq *)data; 3620 struct mii_data *mii; 3621 int error = 0; 3622 3623 DC_LOCK(sc); 3624 3625 switch (command) { 3626 case SIOCSIFFLAGS: 3627 if (ifp->if_flags & IFF_UP) { 3628 int need_setfilt = (ifp->if_flags ^ sc->dc_if_flags) & 3629 (IFF_PROMISC | IFF_ALLMULTI); 3630 3631 if (ifp->if_flags & IFF_RUNNING) { 3632 if (need_setfilt) 3633 dc_setfilt(sc); 3634 } else { 3635 sc->dc_txthresh = 0; 3636 dc_init(sc); 3637 } 3638 } else { 3639 if (ifp->if_flags & IFF_RUNNING) 3640 dc_stop(sc); 3641 } 3642 sc->dc_if_flags = ifp->if_flags; 3643 error = 0; 3644 break; 3645 case SIOCADDMULTI: 3646 case SIOCDELMULTI: 3647 dc_setfilt(sc); 3648 error = 0; 3649 break; 3650 case SIOCGIFMEDIA: 3651 case SIOCSIFMEDIA: 3652 mii = device_get_softc(sc->dc_miibus); 3653 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 3654 #ifdef SRM_MEDIA 3655 if (sc->dc_srm_media) 3656 sc->dc_srm_media = 0; 3657 #endif 3658 break; 3659 case SIOCSIFCAP: 3660 ifp->if_capenable &= ~IFCAP_POLLING; 3661 ifp->if_capenable |= ifr->ifr_reqcap & IFCAP_POLLING; 3662 break; 3663 default: 3664 error = ether_ioctl(ifp, command, data); 3665 break; 3666 } 3667 3668 DC_UNLOCK(sc); 3669 3670 return (error); 3671 } 3672 3673 static void 3674 dc_watchdog(struct ifnet *ifp) 3675 { 3676 struct dc_softc *sc; 3677 3678 sc = ifp->if_softc; 3679 3680 DC_LOCK(sc); 3681 3682 ifp->if_oerrors++; 3683 printf("dc%d: watchdog timeout\n", sc->dc_unit); 3684 3685 dc_stop(sc); 3686 dc_reset(sc); 3687 dc_init(sc); 3688 3689 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 3690 dc_start(ifp); 3691 3692 DC_UNLOCK(sc); 3693 } 3694 3695 /* 3696 * Stop the adapter and free any mbufs allocated to the 3697 * RX and TX lists. 3698 */ 3699 static void 3700 dc_stop(struct dc_softc *sc) 3701 { 3702 struct ifnet *ifp; 3703 struct dc_list_data *ld; 3704 struct dc_chain_data *cd; 3705 int i; 3706 u_int32_t ctl; 3707 3708 DC_LOCK(sc); 3709 3710 ifp = &sc->arpcom.ac_if; 3711 ifp->if_timer = 0; 3712 ld = sc->dc_ldata; 3713 cd = &sc->dc_cdata; 3714 3715 callout_stop(&sc->dc_stat_ch); 3716 3717 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 3718 #ifdef DEVICE_POLLING 3719 ether_poll_deregister(ifp); 3720 #endif 3721 3722 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON | DC_NETCFG_TX_ON)); 3723 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3724 CSR_WRITE_4(sc, DC_TXADDR, 0x00000000); 3725 CSR_WRITE_4(sc, DC_RXADDR, 0x00000000); 3726 sc->dc_link = 0; 3727 3728 /* 3729 * Free data in the RX lists. 3730 */ 3731 for (i = 0; i < DC_RX_LIST_CNT; i++) { 3732 if (cd->dc_rx_chain[i] != NULL) { 3733 m_freem(cd->dc_rx_chain[i]); 3734 cd->dc_rx_chain[i] = NULL; 3735 } 3736 } 3737 bzero(&ld->dc_rx_list, sizeof(ld->dc_rx_list)); 3738 3739 /* 3740 * Free the TX list buffers. 3741 */ 3742 for (i = 0; i < DC_TX_LIST_CNT; i++) { 3743 if (cd->dc_tx_chain[i] != NULL) { 3744 ctl = le32toh(ld->dc_tx_list[i].dc_ctl); 3745 if ((ctl & DC_TXCTL_SETUP) || 3746 !(ctl & DC_TXCTL_LASTFRAG)) { 3747 cd->dc_tx_chain[i] = NULL; 3748 continue; 3749 } 3750 bus_dmamap_unload(sc->dc_mtag, cd->dc_tx_map[i]); 3751 m_freem(cd->dc_tx_chain[i]); 3752 cd->dc_tx_chain[i] = NULL; 3753 } 3754 } 3755 bzero(&ld->dc_tx_list, sizeof(ld->dc_tx_list)); 3756 3757 DC_UNLOCK(sc); 3758 } 3759 3760 /* 3761 * Device suspend routine. Stop the interface and save some PCI 3762 * settings in case the BIOS doesn't restore them properly on 3763 * resume. 3764 */ 3765 static int 3766 dc_suspend(device_t dev) 3767 { 3768 struct dc_softc *sc; 3769 int s; 3770 3771 s = splimp(); 3772 3773 sc = device_get_softc(dev); 3774 dc_stop(sc); 3775 sc->suspended = 1; 3776 3777 splx(s); 3778 return (0); 3779 } 3780 3781 /* 3782 * Device resume routine. Restore some PCI settings in case the BIOS 3783 * doesn't, re-enable busmastering, and restart the interface if 3784 * appropriate. 3785 */ 3786 static int 3787 dc_resume(device_t dev) 3788 { 3789 struct dc_softc *sc; 3790 struct ifnet *ifp; 3791 int s; 3792 3793 s = splimp(); 3794 3795 sc = device_get_softc(dev); 3796 ifp = &sc->arpcom.ac_if; 3797 3798 /* reinitialize interface if necessary */ 3799 if (ifp->if_flags & IFF_UP) 3800 dc_init(sc); 3801 3802 sc->suspended = 0; 3803 3804 splx(s); 3805 return (0); 3806 } 3807 3808 /* 3809 * Stop all chip I/O so that the kernel's probe routines don't 3810 * get confused by errant DMAs when rebooting. 3811 */ 3812 static void 3813 dc_shutdown(device_t dev) 3814 { 3815 struct dc_softc *sc; 3816 3817 sc = device_get_softc(dev); 3818 3819 dc_stop(sc); 3820 }
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