1 /*- 2 * Copyright (c) 1997, 1998, 1999 3 * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 /* 37 * DEC "tulip" clone ethernet driver. Supports the DEC/Intel 21143 38 * series chips and several workalikes including the following: 39 * 40 * Macronix 98713/98715/98725/98727/98732 PMAC (www.macronix.com) 41 * Macronix/Lite-On 82c115 PNIC II (www.macronix.com) 42 * Lite-On 82c168/82c169 PNIC (www.litecom.com) 43 * ASIX Electronics AX88140A (www.asix.com.tw) 44 * ASIX Electronics AX88141 (www.asix.com.tw) 45 * ADMtek AL981 (www.admtek.com.tw) 46 * ADMtek AN985 (www.admtek.com.tw) 47 * Netgear FA511 (www.netgear.com) Appears to be rebadged ADMTek AN985 48 * Davicom DM9100, DM9102, DM9102A (www.davicom8.com) 49 * Accton EN1217 (www.accton.com) 50 * Xircom X3201 (www.xircom.com) 51 * Abocom FE2500 52 * Conexant LANfinity (www.conexant.com) 53 * 3Com OfficeConnect 10/100B 3CSOHO100B (www.3com.com) 54 * 55 * Datasheets for the 21143 are available at developer.intel.com. 56 * Datasheets for the clone parts can be found at their respective sites. 57 * (Except for the PNIC; see www.freebsd.org/~wpaul/PNIC/pnic.ps.gz.) 58 * The PNIC II is essentially a Macronix 98715A chip; the only difference 59 * worth noting is that its multicast hash table is only 128 bits wide 60 * instead of 512. 61 * 62 * Written by Bill Paul <wpaul@ee.columbia.edu> 63 * Electrical Engineering Department 64 * Columbia University, New York City 65 */ 66 /* 67 * The Intel 21143 is the successor to the DEC 21140. It is basically 68 * the same as the 21140 but with a few new features. The 21143 supports 69 * three kinds of media attachments: 70 * 71 * o MII port, for 10Mbps and 100Mbps support and NWAY 72 * autonegotiation provided by an external PHY. 73 * o SYM port, for symbol mode 100Mbps support. 74 * o 10baseT port. 75 * o AUI/BNC port. 76 * 77 * The 100Mbps SYM port and 10baseT port can be used together in 78 * combination with the internal NWAY support to create a 10/100 79 * autosensing configuration. 80 * 81 * Note that not all tulip workalikes are handled in this driver: we only 82 * deal with those which are relatively well behaved. The Winbond is 83 * handled separately due to its different register offsets and the 84 * special handling needed for its various bugs. The PNIC is handled 85 * here, but I'm not thrilled about it. 86 * 87 * All of the workalike chips use some form of MII transceiver support 88 * with the exception of the Macronix chips, which also have a SYM port. 89 * The ASIX AX88140A is also documented to have a SYM port, but all 90 * the cards I've seen use an MII transceiver, probably because the 91 * AX88140A doesn't support internal NWAY. 92 */ 93 94 #ifdef HAVE_KERNEL_OPTION_HEADERS 95 #include "opt_device_polling.h" 96 #endif 97 98 #include <sys/param.h> 99 #include <sys/endian.h> 100 #include <sys/systm.h> 101 #include <sys/sockio.h> 102 #include <sys/mbuf.h> 103 #include <sys/malloc.h> 104 #include <sys/kernel.h> 105 #include <sys/module.h> 106 #include <sys/socket.h> 107 #include <sys/sysctl.h> 108 109 #include <net/if.h> 110 #include <net/if_arp.h> 111 #include <net/ethernet.h> 112 #include <net/if_dl.h> 113 #include <net/if_media.h> 114 #include <net/if_types.h> 115 #include <net/if_vlan_var.h> 116 117 #include <net/bpf.h> 118 119 #include <machine/bus.h> 120 #include <machine/resource.h> 121 #include <sys/bus.h> 122 #include <sys/rman.h> 123 124 #include <dev/mii/mii.h> 125 #include <dev/mii/miivar.h> 126 127 #include <dev/pci/pcireg.h> 128 #include <dev/pci/pcivar.h> 129 130 #define DC_USEIOSPACE 131 132 #include <dev/dc/if_dcreg.h> 133 134 #ifdef __sparc64__ 135 #include <dev/ofw/openfirm.h> 136 #include <machine/ofw_machdep.h> 137 #endif 138 139 MODULE_DEPEND(dc, pci, 1, 1, 1); 140 MODULE_DEPEND(dc, ether, 1, 1, 1); 141 MODULE_DEPEND(dc, miibus, 1, 1, 1); 142 143 /* 144 * "device miibus" is required in kernel config. See GENERIC if you get 145 * errors here. 146 */ 147 #include "miibus_if.h" 148 149 /* 150 * Various supported device vendors/types and their names. 151 */ 152 static struct dc_type dc_devs[] = { 153 { DC_DEVID(DC_VENDORID_DEC, DC_DEVICEID_21143), 0, 154 "Intel 21143 10/100BaseTX" }, 155 { DC_DEVID(DC_VENDORID_DAVICOM, DC_DEVICEID_DM9009), 0, 156 "Davicom DM9009 10/100BaseTX" }, 157 { DC_DEVID(DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100), 0, 158 "Davicom DM9100 10/100BaseTX" }, 159 { DC_DEVID(DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102), DC_REVISION_DM9102A, 160 "Davicom DM9102A 10/100BaseTX" }, 161 { DC_DEVID(DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102), 0, 162 "Davicom DM9102 10/100BaseTX" }, 163 { DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_AL981), 0, 164 "ADMtek AL981 10/100BaseTX" }, 165 { DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_AN985), 0, 166 "ADMtek AN985 10/100BaseTX" }, 167 { DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9511), 0, 168 "ADMtek ADM9511 10/100BaseTX" }, 169 { DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9513), 0, 170 "ADMtek ADM9513 10/100BaseTX" }, 171 { DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_FA511), 0, 172 "Netgear FA511 10/100BaseTX" }, 173 { DC_DEVID(DC_VENDORID_ASIX, DC_DEVICEID_AX88140A), DC_REVISION_88141, 174 "ASIX AX88141 10/100BaseTX" }, 175 { DC_DEVID(DC_VENDORID_ASIX, DC_DEVICEID_AX88140A), 0, 176 "ASIX AX88140A 10/100BaseTX" }, 177 { DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_98713), DC_REVISION_98713A, 178 "Macronix 98713A 10/100BaseTX" }, 179 { DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_98713), 0, 180 "Macronix 98713 10/100BaseTX" }, 181 { DC_DEVID(DC_VENDORID_CP, DC_DEVICEID_98713_CP), DC_REVISION_98713A, 182 "Compex RL100-TX 10/100BaseTX" }, 183 { DC_DEVID(DC_VENDORID_CP, DC_DEVICEID_98713_CP), 0, 184 "Compex RL100-TX 10/100BaseTX" }, 185 { DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_987x5), DC_REVISION_98725, 186 "Macronix 98725 10/100BaseTX" }, 187 { DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_987x5), DC_REVISION_98715AEC_C, 188 "Macronix 98715AEC-C 10/100BaseTX" }, 189 { DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_987x5), 0, 190 "Macronix 98715/98715A 10/100BaseTX" }, 191 { DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_98727), 0, 192 "Macronix 98727/98732 10/100BaseTX" }, 193 { DC_DEVID(DC_VENDORID_LO, DC_DEVICEID_82C115), 0, 194 "LC82C115 PNIC II 10/100BaseTX" }, 195 { DC_DEVID(DC_VENDORID_LO, DC_DEVICEID_82C168), DC_REVISION_82C169, 196 "82c169 PNIC 10/100BaseTX" }, 197 { DC_DEVID(DC_VENDORID_LO, DC_DEVICEID_82C168), 0, 198 "82c168 PNIC 10/100BaseTX" }, 199 { DC_DEVID(DC_VENDORID_ACCTON, DC_DEVICEID_EN1217), 0, 200 "Accton EN1217 10/100BaseTX" }, 201 { DC_DEVID(DC_VENDORID_ACCTON, DC_DEVICEID_EN2242), 0, 202 "Accton EN2242 MiniPCI 10/100BaseTX" }, 203 { DC_DEVID(DC_VENDORID_XIRCOM, DC_DEVICEID_X3201), 0, 204 "Xircom X3201 10/100BaseTX" }, 205 { DC_DEVID(DC_VENDORID_DLINK, DC_DEVICEID_DRP32TXD), 0, 206 "Neteasy DRP-32TXD Cardbus 10/100" }, 207 { DC_DEVID(DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500), 0, 208 "Abocom FE2500 10/100BaseTX" }, 209 { DC_DEVID(DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500MX), 0, 210 "Abocom FE2500MX 10/100BaseTX" }, 211 { DC_DEVID(DC_VENDORID_CONEXANT, DC_DEVICEID_RS7112), 0, 212 "Conexant LANfinity MiniPCI 10/100BaseTX" }, 213 { DC_DEVID(DC_VENDORID_HAWKING, DC_DEVICEID_HAWKING_PN672TX), 0, 214 "Hawking CB102 CardBus 10/100" }, 215 { DC_DEVID(DC_VENDORID_PLANEX, DC_DEVICEID_FNW3602T), 0, 216 "PlaneX FNW-3602-T CardBus 10/100" }, 217 { DC_DEVID(DC_VENDORID_3COM, DC_DEVICEID_3CSOHOB), 0, 218 "3Com OfficeConnect 10/100B" }, 219 { DC_DEVID(DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN120), 0, 220 "Microsoft MN-120 CardBus 10/100" }, 221 { DC_DEVID(DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN130), 0, 222 "Microsoft MN-130 10/100" }, 223 { DC_DEVID(DC_VENDORID_LINKSYS, DC_DEVICEID_PCMPC200_AB08), 0, 224 "Linksys PCMPC200 CardBus 10/100" }, 225 { DC_DEVID(DC_VENDORID_LINKSYS, DC_DEVICEID_PCMPC200_AB09), 0, 226 "Linksys PCMPC200 CardBus 10/100" }, 227 { 0, 0, NULL } 228 }; 229 230 static int dc_probe(device_t); 231 static int dc_attach(device_t); 232 static int dc_detach(device_t); 233 static int dc_suspend(device_t); 234 static int dc_resume(device_t); 235 static struct dc_type *dc_devtype(device_t); 236 static int dc_newbuf(struct dc_softc *, int, int); 237 static int dc_encap(struct dc_softc *, struct mbuf **); 238 static void dc_pnic_rx_bug_war(struct dc_softc *, int); 239 static int dc_rx_resync(struct dc_softc *); 240 static void dc_rxeof(struct dc_softc *); 241 static void dc_txeof(struct dc_softc *); 242 static void dc_tick(void *); 243 static void dc_tx_underrun(struct dc_softc *); 244 static void dc_intr(void *); 245 static void dc_start(struct ifnet *); 246 static void dc_start_locked(struct ifnet *); 247 static int dc_ioctl(struct ifnet *, u_long, caddr_t); 248 static void dc_init(void *); 249 static void dc_init_locked(struct dc_softc *); 250 static void dc_stop(struct dc_softc *); 251 static void dc_watchdog(struct ifnet *); 252 static void dc_shutdown(device_t); 253 static int dc_ifmedia_upd(struct ifnet *); 254 static void dc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 255 256 static void dc_delay(struct dc_softc *); 257 static void dc_eeprom_idle(struct dc_softc *); 258 static void dc_eeprom_putbyte(struct dc_softc *, int); 259 static void dc_eeprom_getword(struct dc_softc *, int, u_int16_t *); 260 static void dc_eeprom_getword_pnic(struct dc_softc *, int, u_int16_t *); 261 static void dc_eeprom_getword_xircom(struct dc_softc *, int, u_int16_t *); 262 static void dc_eeprom_width(struct dc_softc *); 263 static void dc_read_eeprom(struct dc_softc *, caddr_t, int, int, int); 264 265 static void dc_mii_writebit(struct dc_softc *, int); 266 static int dc_mii_readbit(struct dc_softc *); 267 static void dc_mii_sync(struct dc_softc *); 268 static void dc_mii_send(struct dc_softc *, u_int32_t, int); 269 static int dc_mii_readreg(struct dc_softc *, struct dc_mii_frame *); 270 static int dc_mii_writereg(struct dc_softc *, struct dc_mii_frame *); 271 static int dc_miibus_readreg(device_t, int, int); 272 static int dc_miibus_writereg(device_t, int, int, int); 273 static void dc_miibus_statchg(device_t); 274 static void dc_miibus_mediainit(device_t); 275 276 static void dc_setcfg(struct dc_softc *, int); 277 static uint32_t dc_mchash_le(struct dc_softc *, const uint8_t *); 278 static uint32_t dc_mchash_be(const uint8_t *); 279 static void dc_setfilt_21143(struct dc_softc *); 280 static void dc_setfilt_asix(struct dc_softc *); 281 static void dc_setfilt_admtek(struct dc_softc *); 282 static void dc_setfilt_xircom(struct dc_softc *); 283 284 static void dc_setfilt(struct dc_softc *); 285 286 static void dc_reset(struct dc_softc *); 287 static int dc_list_rx_init(struct dc_softc *); 288 static int dc_list_tx_init(struct dc_softc *); 289 290 static void dc_read_srom(struct dc_softc *, int); 291 static void dc_parse_21143_srom(struct dc_softc *); 292 static void dc_decode_leaf_sia(struct dc_softc *, struct dc_eblock_sia *); 293 static void dc_decode_leaf_mii(struct dc_softc *, struct dc_eblock_mii *); 294 static void dc_decode_leaf_sym(struct dc_softc *, struct dc_eblock_sym *); 295 static void dc_apply_fixup(struct dc_softc *, int); 296 297 static void dc_dma_map_txbuf(void *, bus_dma_segment_t *, int, bus_size_t, int); 298 static void dc_dma_map_rxbuf(void *, bus_dma_segment_t *, int, bus_size_t, int); 299 300 #ifdef DC_USEIOSPACE 301 #define DC_RES SYS_RES_IOPORT 302 #define DC_RID DC_PCI_CFBIO 303 #else 304 #define DC_RES SYS_RES_MEMORY 305 #define DC_RID DC_PCI_CFBMA 306 #endif 307 308 static device_method_t dc_methods[] = { 309 /* Device interface */ 310 DEVMETHOD(device_probe, dc_probe), 311 DEVMETHOD(device_attach, dc_attach), 312 DEVMETHOD(device_detach, dc_detach), 313 DEVMETHOD(device_suspend, dc_suspend), 314 DEVMETHOD(device_resume, dc_resume), 315 DEVMETHOD(device_shutdown, dc_shutdown), 316 317 /* bus interface */ 318 DEVMETHOD(bus_print_child, bus_generic_print_child), 319 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 320 321 /* MII interface */ 322 DEVMETHOD(miibus_readreg, dc_miibus_readreg), 323 DEVMETHOD(miibus_writereg, dc_miibus_writereg), 324 DEVMETHOD(miibus_statchg, dc_miibus_statchg), 325 DEVMETHOD(miibus_mediainit, dc_miibus_mediainit), 326 327 { 0, 0 } 328 }; 329 330 static driver_t dc_driver = { 331 "dc", 332 dc_methods, 333 sizeof(struct dc_softc) 334 }; 335 336 static devclass_t dc_devclass; 337 #ifdef __i386__ 338 static int dc_quick = 1; 339 SYSCTL_INT(_hw, OID_AUTO, dc_quick, CTLFLAG_RW, &dc_quick, 0, 340 "do not m_devget() in dc driver"); 341 #endif 342 343 DRIVER_MODULE(dc, cardbus, dc_driver, dc_devclass, 0, 0); 344 DRIVER_MODULE(dc, pci, dc_driver, dc_devclass, 0, 0); 345 DRIVER_MODULE(miibus, dc, miibus_driver, miibus_devclass, 0, 0); 346 347 #define DC_SETBIT(sc, reg, x) \ 348 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x)) 349 350 #define DC_CLRBIT(sc, reg, x) \ 351 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x)) 352 353 #define SIO_SET(x) DC_SETBIT(sc, DC_SIO, (x)) 354 #define SIO_CLR(x) DC_CLRBIT(sc, DC_SIO, (x)) 355 356 static void 357 dc_delay(struct dc_softc *sc) 358 { 359 int idx; 360 361 for (idx = (300 / 33) + 1; idx > 0; idx--) 362 CSR_READ_4(sc, DC_BUSCTL); 363 } 364 365 static void 366 dc_eeprom_width(struct dc_softc *sc) 367 { 368 int i; 369 370 /* Force EEPROM to idle state. */ 371 dc_eeprom_idle(sc); 372 373 /* Enter EEPROM access mode. */ 374 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 375 dc_delay(sc); 376 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 377 dc_delay(sc); 378 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 379 dc_delay(sc); 380 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 381 dc_delay(sc); 382 383 for (i = 3; i--;) { 384 if (6 & (1 << i)) 385 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 386 else 387 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 388 dc_delay(sc); 389 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 390 dc_delay(sc); 391 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 392 dc_delay(sc); 393 } 394 395 for (i = 1; i <= 12; i++) { 396 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 397 dc_delay(sc); 398 if (!(CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)) { 399 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 400 dc_delay(sc); 401 break; 402 } 403 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 404 dc_delay(sc); 405 } 406 407 /* Turn off EEPROM access mode. */ 408 dc_eeprom_idle(sc); 409 410 if (i < 4 || i > 12) 411 sc->dc_romwidth = 6; 412 else 413 sc->dc_romwidth = i; 414 415 /* Enter EEPROM access mode. */ 416 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 417 dc_delay(sc); 418 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 419 dc_delay(sc); 420 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 421 dc_delay(sc); 422 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 423 dc_delay(sc); 424 425 /* Turn off EEPROM access mode. */ 426 dc_eeprom_idle(sc); 427 } 428 429 static void 430 dc_eeprom_idle(struct dc_softc *sc) 431 { 432 int i; 433 434 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 435 dc_delay(sc); 436 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 437 dc_delay(sc); 438 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 439 dc_delay(sc); 440 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 441 dc_delay(sc); 442 443 for (i = 0; i < 25; i++) { 444 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 445 dc_delay(sc); 446 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 447 dc_delay(sc); 448 } 449 450 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 451 dc_delay(sc); 452 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CS); 453 dc_delay(sc); 454 CSR_WRITE_4(sc, DC_SIO, 0x00000000); 455 } 456 457 /* 458 * Send a read command and address to the EEPROM, check for ACK. 459 */ 460 static void 461 dc_eeprom_putbyte(struct dc_softc *sc, int addr) 462 { 463 int d, i; 464 465 d = DC_EECMD_READ >> 6; 466 for (i = 3; i--; ) { 467 if (d & (1 << i)) 468 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 469 else 470 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); 471 dc_delay(sc); 472 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); 473 dc_delay(sc); 474 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 475 dc_delay(sc); 476 } 477 478 /* 479 * Feed in each bit and strobe the clock. 480 */ 481 for (i = sc->dc_romwidth; i--;) { 482 if (addr & (1 << i)) { 483 SIO_SET(DC_SIO_EE_DATAIN); 484 } else { 485 SIO_CLR(DC_SIO_EE_DATAIN); 486 } 487 dc_delay(sc); 488 SIO_SET(DC_SIO_EE_CLK); 489 dc_delay(sc); 490 SIO_CLR(DC_SIO_EE_CLK); 491 dc_delay(sc); 492 } 493 } 494 495 /* 496 * Read a word of data stored in the EEPROM at address 'addr.' 497 * The PNIC 82c168/82c169 has its own non-standard way to read 498 * the EEPROM. 499 */ 500 static void 501 dc_eeprom_getword_pnic(struct dc_softc *sc, int addr, u_int16_t *dest) 502 { 503 int i; 504 u_int32_t r; 505 506 CSR_WRITE_4(sc, DC_PN_SIOCTL, DC_PN_EEOPCODE_READ | addr); 507 508 for (i = 0; i < DC_TIMEOUT; i++) { 509 DELAY(1); 510 r = CSR_READ_4(sc, DC_SIO); 511 if (!(r & DC_PN_SIOCTL_BUSY)) { 512 *dest = (u_int16_t)(r & 0xFFFF); 513 return; 514 } 515 } 516 } 517 518 /* 519 * Read a word of data stored in the EEPROM at address 'addr.' 520 * The Xircom X3201 has its own non-standard way to read 521 * the EEPROM, too. 522 */ 523 static void 524 dc_eeprom_getword_xircom(struct dc_softc *sc, int addr, u_int16_t *dest) 525 { 526 527 SIO_SET(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ); 528 529 addr *= 2; 530 CSR_WRITE_4(sc, DC_ROM, addr | 0x160); 531 *dest = (u_int16_t)CSR_READ_4(sc, DC_SIO) & 0xff; 532 addr += 1; 533 CSR_WRITE_4(sc, DC_ROM, addr | 0x160); 534 *dest |= ((u_int16_t)CSR_READ_4(sc, DC_SIO) & 0xff) << 8; 535 536 SIO_CLR(DC_SIO_ROMSEL | DC_SIO_ROMCTL_READ); 537 } 538 539 /* 540 * Read a word of data stored in the EEPROM at address 'addr.' 541 */ 542 static void 543 dc_eeprom_getword(struct dc_softc *sc, int addr, u_int16_t *dest) 544 { 545 int i; 546 u_int16_t word = 0; 547 548 /* Force EEPROM to idle state. */ 549 dc_eeprom_idle(sc); 550 551 /* Enter EEPROM access mode. */ 552 CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); 553 dc_delay(sc); 554 DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); 555 dc_delay(sc); 556 DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); 557 dc_delay(sc); 558 DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); 559 dc_delay(sc); 560 561 /* 562 * Send address of word we want to read. 563 */ 564 dc_eeprom_putbyte(sc, addr); 565 566 /* 567 * Start reading bits from EEPROM. 568 */ 569 for (i = 0x8000; i; i >>= 1) { 570 SIO_SET(DC_SIO_EE_CLK); 571 dc_delay(sc); 572 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT) 573 word |= i; 574 dc_delay(sc); 575 SIO_CLR(DC_SIO_EE_CLK); 576 dc_delay(sc); 577 } 578 579 /* Turn off EEPROM access mode. */ 580 dc_eeprom_idle(sc); 581 582 *dest = word; 583 } 584 585 /* 586 * Read a sequence of words from the EEPROM. 587 */ 588 static void 589 dc_read_eeprom(struct dc_softc *sc, caddr_t dest, int off, int cnt, int be) 590 { 591 int i; 592 u_int16_t word = 0, *ptr; 593 594 for (i = 0; i < cnt; i++) { 595 if (DC_IS_PNIC(sc)) 596 dc_eeprom_getword_pnic(sc, off + i, &word); 597 else if (DC_IS_XIRCOM(sc)) 598 dc_eeprom_getword_xircom(sc, off + i, &word); 599 else 600 dc_eeprom_getword(sc, off + i, &word); 601 ptr = (u_int16_t *)(dest + (i * 2)); 602 if (be) 603 *ptr = be16toh(word); 604 else 605 *ptr = le16toh(word); 606 } 607 } 608 609 /* 610 * The following two routines are taken from the Macronix 98713 611 * Application Notes pp.19-21. 612 */ 613 /* 614 * Write a bit to the MII bus. 615 */ 616 static void 617 dc_mii_writebit(struct dc_softc *sc, int bit) 618 { 619 620 if (bit) 621 CSR_WRITE_4(sc, DC_SIO, 622 DC_SIO_ROMCTL_WRITE | DC_SIO_MII_DATAOUT); 623 else 624 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); 625 626 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); 627 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); 628 } 629 630 /* 631 * Read a bit from the MII bus. 632 */ 633 static int 634 dc_mii_readbit(struct dc_softc *sc) 635 { 636 637 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_READ | DC_SIO_MII_DIR); 638 CSR_READ_4(sc, DC_SIO); 639 DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); 640 DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); 641 if (CSR_READ_4(sc, DC_SIO) & DC_SIO_MII_DATAIN) 642 return (1); 643 644 return (0); 645 } 646 647 /* 648 * Sync the PHYs by setting data bit and strobing the clock 32 times. 649 */ 650 static void 651 dc_mii_sync(struct dc_softc *sc) 652 { 653 int i; 654 655 CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); 656 657 for (i = 0; i < 32; i++) 658 dc_mii_writebit(sc, 1); 659 } 660 661 /* 662 * Clock a series of bits through the MII. 663 */ 664 static void 665 dc_mii_send(struct dc_softc *sc, u_int32_t bits, int cnt) 666 { 667 int i; 668 669 for (i = (0x1 << (cnt - 1)); i; i >>= 1) 670 dc_mii_writebit(sc, bits & i); 671 } 672 673 /* 674 * Read an PHY register through the MII. 675 */ 676 static int 677 dc_mii_readreg(struct dc_softc *sc, struct dc_mii_frame *frame) 678 { 679 int i, ack; 680 681 /* 682 * Set up frame for RX. 683 */ 684 frame->mii_stdelim = DC_MII_STARTDELIM; 685 frame->mii_opcode = DC_MII_READOP; 686 frame->mii_turnaround = 0; 687 frame->mii_data = 0; 688 689 /* 690 * Sync the PHYs. 691 */ 692 dc_mii_sync(sc); 693 694 /* 695 * Send command/address info. 696 */ 697 dc_mii_send(sc, frame->mii_stdelim, 2); 698 dc_mii_send(sc, frame->mii_opcode, 2); 699 dc_mii_send(sc, frame->mii_phyaddr, 5); 700 dc_mii_send(sc, frame->mii_regaddr, 5); 701 702 #ifdef notdef 703 /* Idle bit */ 704 dc_mii_writebit(sc, 1); 705 dc_mii_writebit(sc, 0); 706 #endif 707 708 /* Check for ack. */ 709 ack = dc_mii_readbit(sc); 710 711 /* 712 * Now try reading data bits. If the ack failed, we still 713 * need to clock through 16 cycles to keep the PHY(s) in sync. 714 */ 715 if (ack) { 716 for (i = 0; i < 16; i++) 717 dc_mii_readbit(sc); 718 goto fail; 719 } 720 721 for (i = 0x8000; i; i >>= 1) { 722 if (!ack) { 723 if (dc_mii_readbit(sc)) 724 frame->mii_data |= i; 725 } 726 } 727 728 fail: 729 730 dc_mii_writebit(sc, 0); 731 dc_mii_writebit(sc, 0); 732 733 if (ack) 734 return (1); 735 return (0); 736 } 737 738 /* 739 * Write to a PHY register through the MII. 740 */ 741 static int 742 dc_mii_writereg(struct dc_softc *sc, struct dc_mii_frame *frame) 743 { 744 745 /* 746 * Set up frame for TX. 747 */ 748 749 frame->mii_stdelim = DC_MII_STARTDELIM; 750 frame->mii_opcode = DC_MII_WRITEOP; 751 frame->mii_turnaround = DC_MII_TURNAROUND; 752 753 /* 754 * Sync the PHYs. 755 */ 756 dc_mii_sync(sc); 757 758 dc_mii_send(sc, frame->mii_stdelim, 2); 759 dc_mii_send(sc, frame->mii_opcode, 2); 760 dc_mii_send(sc, frame->mii_phyaddr, 5); 761 dc_mii_send(sc, frame->mii_regaddr, 5); 762 dc_mii_send(sc, frame->mii_turnaround, 2); 763 dc_mii_send(sc, frame->mii_data, 16); 764 765 /* Idle bit. */ 766 dc_mii_writebit(sc, 0); 767 dc_mii_writebit(sc, 0); 768 769 return (0); 770 } 771 772 static int 773 dc_miibus_readreg(device_t dev, int phy, int reg) 774 { 775 struct dc_mii_frame frame; 776 struct dc_softc *sc; 777 int i, rval, phy_reg = 0; 778 779 sc = device_get_softc(dev); 780 bzero(&frame, sizeof(frame)); 781 782 /* 783 * Note: both the AL981 and AN985 have internal PHYs, 784 * however the AL981 provides direct access to the PHY 785 * registers while the AN985 uses a serial MII interface. 786 * The AN985's MII interface is also buggy in that you 787 * can read from any MII address (0 to 31), but only address 1 788 * behaves normally. To deal with both cases, we pretend 789 * that the PHY is at MII address 1. 790 */ 791 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) 792 return (0); 793 794 /* 795 * Note: the ukphy probes of the RS7112 report a PHY at 796 * MII address 0 (possibly HomePNA?) and 1 (ethernet) 797 * so we only respond to correct one. 798 */ 799 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR) 800 return (0); 801 802 if (sc->dc_pmode != DC_PMODE_MII) { 803 if (phy == (MII_NPHY - 1)) { 804 switch (reg) { 805 case MII_BMSR: 806 /* 807 * Fake something to make the probe 808 * code think there's a PHY here. 809 */ 810 return (BMSR_MEDIAMASK); 811 break; 812 case MII_PHYIDR1: 813 if (DC_IS_PNIC(sc)) 814 return (DC_VENDORID_LO); 815 return (DC_VENDORID_DEC); 816 break; 817 case MII_PHYIDR2: 818 if (DC_IS_PNIC(sc)) 819 return (DC_DEVICEID_82C168); 820 return (DC_DEVICEID_21143); 821 break; 822 default: 823 return (0); 824 break; 825 } 826 } else 827 return (0); 828 } 829 830 if (DC_IS_PNIC(sc)) { 831 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ | 832 (phy << 23) | (reg << 18)); 833 for (i = 0; i < DC_TIMEOUT; i++) { 834 DELAY(1); 835 rval = CSR_READ_4(sc, DC_PN_MII); 836 if (!(rval & DC_PN_MII_BUSY)) { 837 rval &= 0xFFFF; 838 return (rval == 0xFFFF ? 0 : rval); 839 } 840 } 841 return (0); 842 } 843 844 if (DC_IS_COMET(sc)) { 845 switch (reg) { 846 case MII_BMCR: 847 phy_reg = DC_AL_BMCR; 848 break; 849 case MII_BMSR: 850 phy_reg = DC_AL_BMSR; 851 break; 852 case MII_PHYIDR1: 853 phy_reg = DC_AL_VENID; 854 break; 855 case MII_PHYIDR2: 856 phy_reg = DC_AL_DEVID; 857 break; 858 case MII_ANAR: 859 phy_reg = DC_AL_ANAR; 860 break; 861 case MII_ANLPAR: 862 phy_reg = DC_AL_LPAR; 863 break; 864 case MII_ANER: 865 phy_reg = DC_AL_ANER; 866 break; 867 default: 868 device_printf(dev, "phy_read: bad phy register %x\n", 869 reg); 870 return (0); 871 break; 872 } 873 874 rval = CSR_READ_4(sc, phy_reg) & 0x0000FFFF; 875 876 if (rval == 0xFFFF) 877 return (0); 878 return (rval); 879 } 880 881 frame.mii_phyaddr = phy; 882 frame.mii_regaddr = reg; 883 if (sc->dc_type == DC_TYPE_98713) { 884 phy_reg = CSR_READ_4(sc, DC_NETCFG); 885 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); 886 } 887 dc_mii_readreg(sc, &frame); 888 if (sc->dc_type == DC_TYPE_98713) 889 CSR_WRITE_4(sc, DC_NETCFG, phy_reg); 890 891 return (frame.mii_data); 892 } 893 894 static int 895 dc_miibus_writereg(device_t dev, int phy, int reg, int data) 896 { 897 struct dc_softc *sc; 898 struct dc_mii_frame frame; 899 int i, phy_reg = 0; 900 901 sc = device_get_softc(dev); 902 bzero(&frame, sizeof(frame)); 903 904 if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) 905 return (0); 906 907 if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR) 908 return (0); 909 910 if (DC_IS_PNIC(sc)) { 911 CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE | 912 (phy << 23) | (reg << 10) | data); 913 for (i = 0; i < DC_TIMEOUT; i++) { 914 if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY)) 915 break; 916 } 917 return (0); 918 } 919 920 if (DC_IS_COMET(sc)) { 921 switch (reg) { 922 case MII_BMCR: 923 phy_reg = DC_AL_BMCR; 924 break; 925 case MII_BMSR: 926 phy_reg = DC_AL_BMSR; 927 break; 928 case MII_PHYIDR1: 929 phy_reg = DC_AL_VENID; 930 break; 931 case MII_PHYIDR2: 932 phy_reg = DC_AL_DEVID; 933 break; 934 case MII_ANAR: 935 phy_reg = DC_AL_ANAR; 936 break; 937 case MII_ANLPAR: 938 phy_reg = DC_AL_LPAR; 939 break; 940 case MII_ANER: 941 phy_reg = DC_AL_ANER; 942 break; 943 default: 944 device_printf(dev, "phy_write: bad phy register %x\n", 945 reg); 946 return (0); 947 break; 948 } 949 950 CSR_WRITE_4(sc, phy_reg, data); 951 return (0); 952 } 953 954 frame.mii_phyaddr = phy; 955 frame.mii_regaddr = reg; 956 frame.mii_data = data; 957 958 if (sc->dc_type == DC_TYPE_98713) { 959 phy_reg = CSR_READ_4(sc, DC_NETCFG); 960 CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); 961 } 962 dc_mii_writereg(sc, &frame); 963 if (sc->dc_type == DC_TYPE_98713) 964 CSR_WRITE_4(sc, DC_NETCFG, phy_reg); 965 966 return (0); 967 } 968 969 static void 970 dc_miibus_statchg(device_t dev) 971 { 972 struct dc_softc *sc; 973 struct mii_data *mii; 974 struct ifmedia *ifm; 975 976 sc = device_get_softc(dev); 977 if (DC_IS_ADMTEK(sc)) 978 return; 979 980 mii = device_get_softc(sc->dc_miibus); 981 ifm = &mii->mii_media; 982 if (DC_IS_DAVICOM(sc) && 983 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) { 984 dc_setcfg(sc, ifm->ifm_media); 985 sc->dc_if_media = ifm->ifm_media; 986 } else { 987 dc_setcfg(sc, mii->mii_media_active); 988 sc->dc_if_media = mii->mii_media_active; 989 } 990 } 991 992 /* 993 * Special support for DM9102A cards with HomePNA PHYs. Note: 994 * with the Davicom DM9102A/DM9801 eval board that I have, it seems 995 * to be impossible to talk to the management interface of the DM9801 996 * PHY (its MDIO pin is not connected to anything). Consequently, 997 * the driver has to just 'know' about the additional mode and deal 998 * with it itself. *sigh* 999 */ 1000 static void 1001 dc_miibus_mediainit(device_t dev) 1002 { 1003 struct dc_softc *sc; 1004 struct mii_data *mii; 1005 struct ifmedia *ifm; 1006 int rev; 1007 1008 rev = pci_get_revid(dev); 1009 1010 sc = device_get_softc(dev); 1011 mii = device_get_softc(sc->dc_miibus); 1012 ifm = &mii->mii_media; 1013 1014 if (DC_IS_DAVICOM(sc) && rev >= DC_REVISION_DM9102A) 1015 ifmedia_add(ifm, IFM_ETHER | IFM_HPNA_1, 0, NULL); 1016 } 1017 1018 #define DC_BITS_512 9 1019 #define DC_BITS_128 7 1020 #define DC_BITS_64 6 1021 1022 static uint32_t 1023 dc_mchash_le(struct dc_softc *sc, const uint8_t *addr) 1024 { 1025 uint32_t crc; 1026 1027 /* Compute CRC for the address value. */ 1028 crc = ether_crc32_le(addr, ETHER_ADDR_LEN); 1029 1030 /* 1031 * The hash table on the PNIC II and the MX98715AEC-C/D/E 1032 * chips is only 128 bits wide. 1033 */ 1034 if (sc->dc_flags & DC_128BIT_HASH) 1035 return (crc & ((1 << DC_BITS_128) - 1)); 1036 1037 /* The hash table on the MX98715BEC is only 64 bits wide. */ 1038 if (sc->dc_flags & DC_64BIT_HASH) 1039 return (crc & ((1 << DC_BITS_64) - 1)); 1040 1041 /* Xircom's hash filtering table is different (read: weird) */ 1042 /* Xircom uses the LEAST significant bits */ 1043 if (DC_IS_XIRCOM(sc)) { 1044 if ((crc & 0x180) == 0x180) 1045 return ((crc & 0x0F) + (crc & 0x70) * 3 + (14 << 4)); 1046 else 1047 return ((crc & 0x1F) + ((crc >> 1) & 0xF0) * 3 + 1048 (12 << 4)); 1049 } 1050 1051 return (crc & ((1 << DC_BITS_512) - 1)); 1052 } 1053 1054 /* 1055 * Calculate CRC of a multicast group address, return the lower 6 bits. 1056 */ 1057 static uint32_t 1058 dc_mchash_be(const uint8_t *addr) 1059 { 1060 uint32_t crc; 1061 1062 /* Compute CRC for the address value. */ 1063 crc = ether_crc32_be(addr, ETHER_ADDR_LEN); 1064 1065 /* Return the filter bit position. */ 1066 return ((crc >> 26) & 0x0000003F); 1067 } 1068 1069 /* 1070 * 21143-style RX filter setup routine. Filter programming is done by 1071 * downloading a special setup frame into the TX engine. 21143, Macronix, 1072 * PNIC, PNIC II and Davicom chips are programmed this way. 1073 * 1074 * We always program the chip using 'hash perfect' mode, i.e. one perfect 1075 * address (our node address) and a 512-bit hash filter for multicast 1076 * frames. We also sneak the broadcast address into the hash filter since 1077 * we need that too. 1078 */ 1079 static void 1080 dc_setfilt_21143(struct dc_softc *sc) 1081 { 1082 uint16_t eaddr[(ETHER_ADDR_LEN+1)/2]; 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->dc_ifp; 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 IF_ADDR_LOCK(ifp); 1116 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1117 if (ifma->ifma_addr->sa_family != AF_LINK) 1118 continue; 1119 h = dc_mchash_le(sc, 1120 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1121 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1122 } 1123 IF_ADDR_UNLOCK(ifp); 1124 1125 if (ifp->if_flags & IFF_BROADCAST) { 1126 h = dc_mchash_le(sc, ifp->if_broadcastaddr); 1127 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1128 } 1129 1130 /* Set our MAC address. */ 1131 bcopy(IF_LLADDR(sc->dc_ifp), eaddr, ETHER_ADDR_LEN); 1132 sp[39] = DC_SP_MAC(eaddr[0]); 1133 sp[40] = DC_SP_MAC(eaddr[1]); 1134 sp[41] = DC_SP_MAC(eaddr[2]); 1135 1136 sframe->dc_status = htole32(DC_TXSTAT_OWN); 1137 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 1138 1139 /* 1140 * The PNIC takes an exceedingly long time to process its 1141 * setup frame; wait 10ms after posting the setup frame 1142 * before proceeding, just so it has time to swallow its 1143 * medicine. 1144 */ 1145 DELAY(10000); 1146 1147 ifp->if_timer = 5; 1148 } 1149 1150 static void 1151 dc_setfilt_admtek(struct dc_softc *sc) 1152 { 1153 uint32_t eaddr[(ETHER_ADDR_LEN+3)/4]; 1154 struct ifnet *ifp; 1155 struct ifmultiaddr *ifma; 1156 int h = 0; 1157 u_int32_t hashes[2] = { 0, 0 }; 1158 1159 ifp = sc->dc_ifp; 1160 1161 /* Init our MAC address. */ 1162 bcopy(IF_LLADDR(sc->dc_ifp), eaddr, ETHER_ADDR_LEN); 1163 CSR_WRITE_4(sc, DC_AL_PAR0, eaddr[0]); 1164 CSR_WRITE_4(sc, DC_AL_PAR1, eaddr[1]); 1165 1166 /* If we want promiscuous mode, set the allframes bit. */ 1167 if (ifp->if_flags & IFF_PROMISC) 1168 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1169 else 1170 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1171 1172 if (ifp->if_flags & IFF_ALLMULTI) 1173 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1174 else 1175 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1176 1177 /* First, zot all the existing hash bits. */ 1178 CSR_WRITE_4(sc, DC_AL_MAR0, 0); 1179 CSR_WRITE_4(sc, DC_AL_MAR1, 0); 1180 1181 /* 1182 * If we're already in promisc or allmulti mode, we 1183 * don't have to bother programming the multicast filter. 1184 */ 1185 if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) 1186 return; 1187 1188 /* Now program new ones. */ 1189 IF_ADDR_LOCK(ifp); 1190 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1191 if (ifma->ifma_addr->sa_family != AF_LINK) 1192 continue; 1193 if (DC_IS_CENTAUR(sc)) 1194 h = dc_mchash_le(sc, 1195 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1196 else 1197 h = dc_mchash_be( 1198 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1199 if (h < 32) 1200 hashes[0] |= (1 << h); 1201 else 1202 hashes[1] |= (1 << (h - 32)); 1203 } 1204 IF_ADDR_UNLOCK(ifp); 1205 1206 CSR_WRITE_4(sc, DC_AL_MAR0, hashes[0]); 1207 CSR_WRITE_4(sc, DC_AL_MAR1, hashes[1]); 1208 } 1209 1210 static void 1211 dc_setfilt_asix(struct dc_softc *sc) 1212 { 1213 uint32_t eaddr[(ETHER_ADDR_LEN+3)/4]; 1214 struct ifnet *ifp; 1215 struct ifmultiaddr *ifma; 1216 int h = 0; 1217 u_int32_t hashes[2] = { 0, 0 }; 1218 1219 ifp = sc->dc_ifp; 1220 1221 /* Init our MAC address. */ 1222 bcopy(IF_LLADDR(sc->dc_ifp), eaddr, ETHER_ADDR_LEN); 1223 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR0); 1224 CSR_WRITE_4(sc, DC_AX_FILTDATA, eaddr[0]); 1225 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR1); 1226 CSR_WRITE_4(sc, DC_AX_FILTDATA, eaddr[1]); 1227 1228 /* If we want promiscuous mode, set the allframes bit. */ 1229 if (ifp->if_flags & IFF_PROMISC) 1230 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1231 else 1232 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1233 1234 if (ifp->if_flags & IFF_ALLMULTI) 1235 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1236 else 1237 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1238 1239 /* 1240 * The ASIX chip has a special bit to enable reception 1241 * of broadcast frames. 1242 */ 1243 if (ifp->if_flags & IFF_BROADCAST) 1244 DC_SETBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); 1245 else 1246 DC_CLRBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); 1247 1248 /* first, zot all the existing hash bits */ 1249 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); 1250 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); 1251 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); 1252 CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); 1253 1254 /* 1255 * If we're already in promisc or allmulti mode, we 1256 * don't have to bother programming the multicast filter. 1257 */ 1258 if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) 1259 return; 1260 1261 /* now program new ones */ 1262 IF_ADDR_LOCK(ifp); 1263 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1264 if (ifma->ifma_addr->sa_family != AF_LINK) 1265 continue; 1266 h = dc_mchash_be(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1267 if (h < 32) 1268 hashes[0] |= (1 << h); 1269 else 1270 hashes[1] |= (1 << (h - 32)); 1271 } 1272 IF_ADDR_UNLOCK(ifp); 1273 1274 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); 1275 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]); 1276 CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); 1277 CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]); 1278 } 1279 1280 static void 1281 dc_setfilt_xircom(struct dc_softc *sc) 1282 { 1283 uint16_t eaddr[(ETHER_ADDR_LEN+1)/2]; 1284 struct ifnet *ifp; 1285 struct ifmultiaddr *ifma; 1286 struct dc_desc *sframe; 1287 u_int32_t h, *sp; 1288 int i; 1289 1290 ifp = sc->dc_ifp; 1291 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)); 1292 1293 i = sc->dc_cdata.dc_tx_prod; 1294 DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT); 1295 sc->dc_cdata.dc_tx_cnt++; 1296 sframe = &sc->dc_ldata->dc_tx_list[i]; 1297 sp = sc->dc_cdata.dc_sbuf; 1298 bzero(sp, DC_SFRAME_LEN); 1299 1300 sframe->dc_data = htole32(sc->dc_saddr); 1301 sframe->dc_ctl = htole32(DC_SFRAME_LEN | DC_TXCTL_SETUP | 1302 DC_TXCTL_TLINK | DC_FILTER_HASHPERF | DC_TXCTL_FINT); 1303 1304 sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)sc->dc_cdata.dc_sbuf; 1305 1306 /* If we want promiscuous mode, set the allframes bit. */ 1307 if (ifp->if_flags & IFF_PROMISC) 1308 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1309 else 1310 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); 1311 1312 if (ifp->if_flags & IFF_ALLMULTI) 1313 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1314 else 1315 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); 1316 1317 IF_ADDR_LOCK(ifp); 1318 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1319 if (ifma->ifma_addr->sa_family != AF_LINK) 1320 continue; 1321 h = dc_mchash_le(sc, 1322 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1323 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1324 } 1325 IF_ADDR_UNLOCK(ifp); 1326 1327 if (ifp->if_flags & IFF_BROADCAST) { 1328 h = dc_mchash_le(sc, ifp->if_broadcastaddr); 1329 sp[h >> 4] |= htole32(1 << (h & 0xF)); 1330 } 1331 1332 /* Set our MAC address. */ 1333 bcopy(IF_LLADDR(sc->dc_ifp), eaddr, ETHER_ADDR_LEN); 1334 sp[0] = DC_SP_MAC(eaddr[0]); 1335 sp[1] = DC_SP_MAC(eaddr[1]); 1336 sp[2] = DC_SP_MAC(eaddr[2]); 1337 1338 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 1339 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); 1340 ifp->if_drv_flags |= IFF_DRV_RUNNING; 1341 sframe->dc_status = htole32(DC_TXSTAT_OWN); 1342 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 1343 1344 /* 1345 * Wait some time... 1346 */ 1347 DELAY(1000); 1348 1349 ifp->if_timer = 5; 1350 } 1351 1352 static void 1353 dc_setfilt(struct dc_softc *sc) 1354 { 1355 1356 if (DC_IS_INTEL(sc) || DC_IS_MACRONIX(sc) || DC_IS_PNIC(sc) || 1357 DC_IS_PNICII(sc) || DC_IS_DAVICOM(sc) || DC_IS_CONEXANT(sc)) 1358 dc_setfilt_21143(sc); 1359 1360 if (DC_IS_ASIX(sc)) 1361 dc_setfilt_asix(sc); 1362 1363 if (DC_IS_ADMTEK(sc)) 1364 dc_setfilt_admtek(sc); 1365 1366 if (DC_IS_XIRCOM(sc)) 1367 dc_setfilt_xircom(sc); 1368 } 1369 1370 /* 1371 * In order to fiddle with the 'full-duplex' and '100Mbps' bits in 1372 * the netconfig register, we first have to put the transmit and/or 1373 * receive logic in the idle state. 1374 */ 1375 static void 1376 dc_setcfg(struct dc_softc *sc, int media) 1377 { 1378 int i, restart = 0, watchdogreg; 1379 u_int32_t isr; 1380 1381 if (IFM_SUBTYPE(media) == IFM_NONE) 1382 return; 1383 1384 if (CSR_READ_4(sc, DC_NETCFG) & (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)) { 1385 restart = 1; 1386 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON | DC_NETCFG_RX_ON)); 1387 1388 for (i = 0; i < DC_TIMEOUT; i++) { 1389 isr = CSR_READ_4(sc, DC_ISR); 1390 if (isr & DC_ISR_TX_IDLE && 1391 ((isr & DC_ISR_RX_STATE) == DC_RXSTATE_STOPPED || 1392 (isr & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT)) 1393 break; 1394 DELAY(10); 1395 } 1396 1397 if (i == DC_TIMEOUT) 1398 if_printf(sc->dc_ifp, 1399 "failed to force tx and rx to idle state\n"); 1400 } 1401 1402 if (IFM_SUBTYPE(media) == IFM_100_TX) { 1403 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); 1404 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); 1405 if (sc->dc_pmode == DC_PMODE_MII) { 1406 if (DC_IS_INTEL(sc)) { 1407 /* There's a write enable bit here that reads as 1. */ 1408 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); 1409 watchdogreg &= ~DC_WDOG_CTLWREN; 1410 watchdogreg |= DC_WDOG_JABBERDIS; 1411 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); 1412 } else { 1413 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); 1414 } 1415 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1416 DC_NETCFG_PORTSEL | DC_NETCFG_SCRAMBLER)); 1417 if (sc->dc_type == DC_TYPE_98713) 1418 DC_SETBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1419 DC_NETCFG_SCRAMBLER)); 1420 if (!DC_IS_DAVICOM(sc)) 1421 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1422 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1423 if (DC_IS_INTEL(sc)) 1424 dc_apply_fixup(sc, IFM_AUTO); 1425 } else { 1426 if (DC_IS_PNIC(sc)) { 1427 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_SPEEDSEL); 1428 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); 1429 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); 1430 } 1431 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1432 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1433 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); 1434 if (DC_IS_INTEL(sc)) 1435 dc_apply_fixup(sc, 1436 (media & IFM_GMASK) == IFM_FDX ? 1437 IFM_100_TX | IFM_FDX : IFM_100_TX); 1438 } 1439 } 1440 1441 if (IFM_SUBTYPE(media) == IFM_10_T) { 1442 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); 1443 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); 1444 if (sc->dc_pmode == DC_PMODE_MII) { 1445 /* There's a write enable bit here that reads as 1. */ 1446 if (DC_IS_INTEL(sc)) { 1447 watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); 1448 watchdogreg &= ~DC_WDOG_CTLWREN; 1449 watchdogreg |= DC_WDOG_JABBERDIS; 1450 CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); 1451 } else { 1452 DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); 1453 } 1454 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS | 1455 DC_NETCFG_PORTSEL | DC_NETCFG_SCRAMBLER)); 1456 if (sc->dc_type == DC_TYPE_98713) 1457 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1458 if (!DC_IS_DAVICOM(sc)) 1459 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1460 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1461 if (DC_IS_INTEL(sc)) 1462 dc_apply_fixup(sc, IFM_AUTO); 1463 } else { 1464 if (DC_IS_PNIC(sc)) { 1465 DC_PN_GPIO_CLRBIT(sc, DC_PN_GPIO_SPEEDSEL); 1466 DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); 1467 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); 1468 } 1469 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1470 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PCS); 1471 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); 1472 if (DC_IS_INTEL(sc)) { 1473 DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 1474 DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); 1475 if ((media & IFM_GMASK) == IFM_FDX) 1476 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3D); 1477 else 1478 DC_SETBIT(sc, DC_10BTCTRL, 0x7F3F); 1479 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 1480 DC_CLRBIT(sc, DC_10BTCTRL, 1481 DC_TCTL_AUTONEGENBL); 1482 dc_apply_fixup(sc, 1483 (media & IFM_GMASK) == IFM_FDX ? 1484 IFM_10_T | IFM_FDX : IFM_10_T); 1485 DELAY(20000); 1486 } 1487 } 1488 } 1489 1490 /* 1491 * If this is a Davicom DM9102A card with a DM9801 HomePNA 1492 * PHY and we want HomePNA mode, set the portsel bit to turn 1493 * on the external MII port. 1494 */ 1495 if (DC_IS_DAVICOM(sc)) { 1496 if (IFM_SUBTYPE(media) == IFM_HPNA_1) { 1497 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1498 sc->dc_link = 1; 1499 } else { 1500 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 1501 } 1502 } 1503 1504 if ((media & IFM_GMASK) == IFM_FDX) { 1505 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 1506 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) 1507 DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); 1508 } else { 1509 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 1510 if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) 1511 DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); 1512 } 1513 1514 if (restart) 1515 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON | DC_NETCFG_RX_ON); 1516 } 1517 1518 static void 1519 dc_reset(struct dc_softc *sc) 1520 { 1521 int i; 1522 1523 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); 1524 1525 for (i = 0; i < DC_TIMEOUT; i++) { 1526 DELAY(10); 1527 if (!(CSR_READ_4(sc, DC_BUSCTL) & DC_BUSCTL_RESET)) 1528 break; 1529 } 1530 1531 if (DC_IS_ASIX(sc) || DC_IS_ADMTEK(sc) || DC_IS_CONEXANT(sc) || 1532 DC_IS_XIRCOM(sc) || DC_IS_INTEL(sc)) { 1533 DELAY(10000); 1534 DC_CLRBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); 1535 i = 0; 1536 } 1537 1538 if (i == DC_TIMEOUT) 1539 if_printf(sc->dc_ifp, "reset never completed!\n"); 1540 1541 /* Wait a little while for the chip to get its brains in order. */ 1542 DELAY(1000); 1543 1544 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 1545 CSR_WRITE_4(sc, DC_BUSCTL, 0x00000000); 1546 CSR_WRITE_4(sc, DC_NETCFG, 0x00000000); 1547 1548 /* 1549 * Bring the SIA out of reset. In some cases, it looks 1550 * like failing to unreset the SIA soon enough gets it 1551 * into a state where it will never come out of reset 1552 * until we reset the whole chip again. 1553 */ 1554 if (DC_IS_INTEL(sc)) { 1555 DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 1556 CSR_WRITE_4(sc, DC_10BTCTRL, 0); 1557 CSR_WRITE_4(sc, DC_WATCHDOG, 0); 1558 } 1559 } 1560 1561 static struct dc_type * 1562 dc_devtype(device_t dev) 1563 { 1564 struct dc_type *t; 1565 u_int32_t devid; 1566 u_int8_t rev; 1567 1568 t = dc_devs; 1569 devid = pci_get_devid(dev); 1570 rev = pci_get_revid(dev); 1571 1572 while (t->dc_name != NULL) { 1573 if (devid == t->dc_devid && rev >= t->dc_minrev) 1574 return (t); 1575 t++; 1576 } 1577 1578 return (NULL); 1579 } 1580 1581 /* 1582 * Probe for a 21143 or clone chip. Check the PCI vendor and device 1583 * IDs against our list and return a device name if we find a match. 1584 * We do a little bit of extra work to identify the exact type of 1585 * chip. The MX98713 and MX98713A have the same PCI vendor/device ID, 1586 * but different revision IDs. The same is true for 98715/98715A 1587 * chips and the 98725, as well as the ASIX and ADMtek chips. In some 1588 * cases, the exact chip revision affects driver behavior. 1589 */ 1590 static int 1591 dc_probe(device_t dev) 1592 { 1593 struct dc_type *t; 1594 1595 t = dc_devtype(dev); 1596 1597 if (t != NULL) { 1598 device_set_desc(dev, t->dc_name); 1599 return (BUS_PROBE_DEFAULT); 1600 } 1601 1602 return (ENXIO); 1603 } 1604 1605 static void 1606 dc_apply_fixup(struct dc_softc *sc, int media) 1607 { 1608 struct dc_mediainfo *m; 1609 u_int8_t *p; 1610 int i; 1611 u_int32_t reg; 1612 1613 m = sc->dc_mi; 1614 1615 while (m != NULL) { 1616 if (m->dc_media == media) 1617 break; 1618 m = m->dc_next; 1619 } 1620 1621 if (m == NULL) 1622 return; 1623 1624 for (i = 0, p = m->dc_reset_ptr; i < m->dc_reset_len; i++, p += 2) { 1625 reg = (p[0] | (p[1] << 8)) << 16; 1626 CSR_WRITE_4(sc, DC_WATCHDOG, reg); 1627 } 1628 1629 for (i = 0, p = m->dc_gp_ptr; i < m->dc_gp_len; i++, p += 2) { 1630 reg = (p[0] | (p[1] << 8)) << 16; 1631 CSR_WRITE_4(sc, DC_WATCHDOG, reg); 1632 } 1633 } 1634 1635 static void 1636 dc_decode_leaf_sia(struct dc_softc *sc, struct dc_eblock_sia *l) 1637 { 1638 struct dc_mediainfo *m; 1639 1640 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1641 switch (l->dc_sia_code & ~DC_SIA_CODE_EXT) { 1642 case DC_SIA_CODE_10BT: 1643 m->dc_media = IFM_10_T; 1644 break; 1645 case DC_SIA_CODE_10BT_FDX: 1646 m->dc_media = IFM_10_T | IFM_FDX; 1647 break; 1648 case DC_SIA_CODE_10B2: 1649 m->dc_media = IFM_10_2; 1650 break; 1651 case DC_SIA_CODE_10B5: 1652 m->dc_media = IFM_10_5; 1653 break; 1654 default: 1655 break; 1656 } 1657 1658 /* 1659 * We need to ignore CSR13, CSR14, CSR15 for SIA mode. 1660 * Things apparently already work for cards that do 1661 * supply Media Specific Data. 1662 */ 1663 if (l->dc_sia_code & DC_SIA_CODE_EXT) { 1664 m->dc_gp_len = 2; 1665 m->dc_gp_ptr = 1666 (u_int8_t *)&l->dc_un.dc_sia_ext.dc_sia_gpio_ctl; 1667 } else { 1668 m->dc_gp_len = 2; 1669 m->dc_gp_ptr = 1670 (u_int8_t *)&l->dc_un.dc_sia_noext.dc_sia_gpio_ctl; 1671 } 1672 1673 m->dc_next = sc->dc_mi; 1674 sc->dc_mi = m; 1675 1676 sc->dc_pmode = DC_PMODE_SIA; 1677 } 1678 1679 static void 1680 dc_decode_leaf_sym(struct dc_softc *sc, struct dc_eblock_sym *l) 1681 { 1682 struct dc_mediainfo *m; 1683 1684 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1685 if (l->dc_sym_code == DC_SYM_CODE_100BT) 1686 m->dc_media = IFM_100_TX; 1687 1688 if (l->dc_sym_code == DC_SYM_CODE_100BT_FDX) 1689 m->dc_media = IFM_100_TX | IFM_FDX; 1690 1691 m->dc_gp_len = 2; 1692 m->dc_gp_ptr = (u_int8_t *)&l->dc_sym_gpio_ctl; 1693 1694 m->dc_next = sc->dc_mi; 1695 sc->dc_mi = m; 1696 1697 sc->dc_pmode = DC_PMODE_SYM; 1698 } 1699 1700 static void 1701 dc_decode_leaf_mii(struct dc_softc *sc, struct dc_eblock_mii *l) 1702 { 1703 struct dc_mediainfo *m; 1704 u_int8_t *p; 1705 1706 m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_NOWAIT | M_ZERO); 1707 /* We abuse IFM_AUTO to represent MII. */ 1708 m->dc_media = IFM_AUTO; 1709 m->dc_gp_len = l->dc_gpr_len; 1710 1711 p = (u_int8_t *)l; 1712 p += sizeof(struct dc_eblock_mii); 1713 m->dc_gp_ptr = p; 1714 p += 2 * l->dc_gpr_len; 1715 m->dc_reset_len = *p; 1716 p++; 1717 m->dc_reset_ptr = p; 1718 1719 m->dc_next = sc->dc_mi; 1720 sc->dc_mi = m; 1721 } 1722 1723 static void 1724 dc_read_srom(struct dc_softc *sc, int bits) 1725 { 1726 int size; 1727 1728 size = 2 << bits; 1729 sc->dc_srom = malloc(size, M_DEVBUF, M_NOWAIT); 1730 dc_read_eeprom(sc, (caddr_t)sc->dc_srom, 0, (size / 2), 0); 1731 } 1732 1733 static void 1734 dc_parse_21143_srom(struct dc_softc *sc) 1735 { 1736 struct dc_leaf_hdr *lhdr; 1737 struct dc_eblock_hdr *hdr; 1738 int have_mii, i, loff; 1739 char *ptr; 1740 1741 have_mii = 0; 1742 loff = sc->dc_srom[27]; 1743 lhdr = (struct dc_leaf_hdr *)&(sc->dc_srom[loff]); 1744 1745 ptr = (char *)lhdr; 1746 ptr += sizeof(struct dc_leaf_hdr) - 1; 1747 /* 1748 * Look if we got a MII media block. 1749 */ 1750 for (i = 0; i < lhdr->dc_mcnt; i++) { 1751 hdr = (struct dc_eblock_hdr *)ptr; 1752 if (hdr->dc_type == DC_EBLOCK_MII) 1753 have_mii++; 1754 1755 ptr += (hdr->dc_len & 0x7F); 1756 ptr++; 1757 } 1758 1759 /* 1760 * Do the same thing again. Only use SIA and SYM media 1761 * blocks if no MII media block is available. 1762 */ 1763 ptr = (char *)lhdr; 1764 ptr += sizeof(struct dc_leaf_hdr) - 1; 1765 for (i = 0; i < lhdr->dc_mcnt; i++) { 1766 hdr = (struct dc_eblock_hdr *)ptr; 1767 switch (hdr->dc_type) { 1768 case DC_EBLOCK_MII: 1769 dc_decode_leaf_mii(sc, (struct dc_eblock_mii *)hdr); 1770 break; 1771 case DC_EBLOCK_SIA: 1772 if (! have_mii) 1773 dc_decode_leaf_sia(sc, 1774 (struct dc_eblock_sia *)hdr); 1775 break; 1776 case DC_EBLOCK_SYM: 1777 if (! have_mii) 1778 dc_decode_leaf_sym(sc, 1779 (struct dc_eblock_sym *)hdr); 1780 break; 1781 default: 1782 /* Don't care. Yet. */ 1783 break; 1784 } 1785 ptr += (hdr->dc_len & 0x7F); 1786 ptr++; 1787 } 1788 } 1789 1790 static void 1791 dc_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 1792 { 1793 u_int32_t *paddr; 1794 1795 KASSERT(nseg == 1, ("wrong number of segments, should be 1")); 1796 paddr = arg; 1797 *paddr = segs->ds_addr; 1798 } 1799 1800 /* 1801 * Attach the interface. Allocate softc structures, do ifmedia 1802 * setup and ethernet/BPF attach. 1803 */ 1804 static int 1805 dc_attach(device_t dev) 1806 { 1807 int tmp = 0; 1808 uint32_t eaddr[(ETHER_ADDR_LEN+3)/4]; 1809 u_int32_t command; 1810 struct dc_softc *sc; 1811 struct ifnet *ifp; 1812 u_int32_t revision; 1813 int error = 0, rid, mac_offset; 1814 int i; 1815 u_int8_t *mac; 1816 1817 sc = device_get_softc(dev); 1818 1819 mtx_init(&sc->dc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 1820 MTX_DEF); 1821 1822 /* 1823 * Map control/status registers. 1824 */ 1825 pci_enable_busmaster(dev); 1826 1827 rid = DC_RID; 1828 sc->dc_res = bus_alloc_resource_any(dev, DC_RES, &rid, RF_ACTIVE); 1829 1830 if (sc->dc_res == NULL) { 1831 device_printf(dev, "couldn't map ports/memory\n"); 1832 error = ENXIO; 1833 goto fail; 1834 } 1835 1836 sc->dc_btag = rman_get_bustag(sc->dc_res); 1837 sc->dc_bhandle = rman_get_bushandle(sc->dc_res); 1838 1839 /* Allocate interrupt. */ 1840 rid = 0; 1841 sc->dc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 1842 RF_SHAREABLE | RF_ACTIVE); 1843 1844 if (sc->dc_irq == NULL) { 1845 device_printf(dev, "couldn't map interrupt\n"); 1846 error = ENXIO; 1847 goto fail; 1848 } 1849 1850 /* Need this info to decide on a chip type. */ 1851 sc->dc_info = dc_devtype(dev); 1852 revision = pci_get_revid(dev); 1853 1854 /* Get the eeprom width, but PNIC and XIRCOM have diff eeprom */ 1855 if (sc->dc_info->dc_devid != 1856 DC_DEVID(DC_VENDORID_LO, DC_DEVICEID_82C168) && 1857 sc->dc_info->dc_devid != 1858 DC_DEVID(DC_VENDORID_XIRCOM, DC_DEVICEID_X3201)) 1859 dc_eeprom_width(sc); 1860 1861 switch (sc->dc_info->dc_devid) { 1862 case DC_DEVID(DC_VENDORID_DEC, DC_DEVICEID_21143): 1863 sc->dc_type = DC_TYPE_21143; 1864 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1865 sc->dc_flags |= DC_REDUCED_MII_POLL; 1866 /* Save EEPROM contents so we can parse them later. */ 1867 dc_read_srom(sc, sc->dc_romwidth); 1868 break; 1869 case DC_DEVID(DC_VENDORID_DAVICOM, DC_DEVICEID_DM9009): 1870 case DC_DEVID(DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100): 1871 case DC_DEVID(DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102): 1872 sc->dc_type = DC_TYPE_DM9102; 1873 sc->dc_flags |= DC_TX_COALESCE | DC_TX_INTR_ALWAYS; 1874 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_TX_STORENFWD; 1875 sc->dc_flags |= DC_TX_ALIGN; 1876 sc->dc_pmode = DC_PMODE_MII; 1877 1878 /* Increase the latency timer value. */ 1879 pci_write_config(dev, PCIR_LATTIMER, 0x80, 1); 1880 break; 1881 case DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_AL981): 1882 sc->dc_type = DC_TYPE_AL981; 1883 sc->dc_flags |= DC_TX_USE_TX_INTR; 1884 sc->dc_flags |= DC_TX_ADMTEK_WAR; 1885 sc->dc_pmode = DC_PMODE_MII; 1886 dc_read_srom(sc, sc->dc_romwidth); 1887 break; 1888 case DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_AN985): 1889 case DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9511): 1890 case DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_ADM9513): 1891 case DC_DEVID(DC_VENDORID_DLINK, DC_DEVICEID_DRP32TXD): 1892 case DC_DEVID(DC_VENDORID_ADMTEK, DC_DEVICEID_FA511): 1893 case DC_DEVID(DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500): 1894 case DC_DEVID(DC_VENDORID_ABOCOM, DC_DEVICEID_FE2500MX): 1895 case DC_DEVID(DC_VENDORID_ACCTON, DC_DEVICEID_EN2242): 1896 case DC_DEVID(DC_VENDORID_HAWKING, DC_DEVICEID_HAWKING_PN672TX): 1897 case DC_DEVID(DC_VENDORID_PLANEX, DC_DEVICEID_FNW3602T): 1898 case DC_DEVID(DC_VENDORID_3COM, DC_DEVICEID_3CSOHOB): 1899 case DC_DEVID(DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN120): 1900 case DC_DEVID(DC_VENDORID_MICROSOFT, DC_DEVICEID_MSMN130): 1901 case DC_DEVID(DC_VENDORID_LINKSYS, DC_DEVICEID_PCMPC200_AB08): 1902 case DC_DEVID(DC_VENDORID_LINKSYS, DC_DEVICEID_PCMPC200_AB09): 1903 sc->dc_type = DC_TYPE_AN985; 1904 sc->dc_flags |= DC_64BIT_HASH; 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 /* Don't read SROM for - auto-loaded on reset */ 1909 break; 1910 case DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_98713): 1911 case DC_DEVID(DC_VENDORID_CP, DC_DEVICEID_98713_CP): 1912 if (revision < DC_REVISION_98713A) { 1913 sc->dc_type = DC_TYPE_98713; 1914 } 1915 if (revision >= DC_REVISION_98713A) { 1916 sc->dc_type = DC_TYPE_98713A; 1917 sc->dc_flags |= DC_21143_NWAY; 1918 } 1919 sc->dc_flags |= DC_REDUCED_MII_POLL; 1920 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1921 break; 1922 case DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_987x5): 1923 case DC_DEVID(DC_VENDORID_ACCTON, DC_DEVICEID_EN1217): 1924 /* 1925 * Macronix MX98715AEC-C/D/E parts have only a 1926 * 128-bit hash table. We need to deal with these 1927 * in the same manner as the PNIC II so that we 1928 * get the right number of bits out of the 1929 * CRC routine. 1930 */ 1931 if (revision >= DC_REVISION_98715AEC_C && 1932 revision < DC_REVISION_98725) 1933 sc->dc_flags |= DC_128BIT_HASH; 1934 sc->dc_type = DC_TYPE_987x5; 1935 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1936 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1937 break; 1938 case DC_DEVID(DC_VENDORID_MX, DC_DEVICEID_98727): 1939 sc->dc_type = DC_TYPE_987x5; 1940 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR; 1941 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1942 break; 1943 case DC_DEVID(DC_VENDORID_LO, DC_DEVICEID_82C115): 1944 sc->dc_type = DC_TYPE_PNICII; 1945 sc->dc_flags |= DC_TX_POLL | DC_TX_USE_TX_INTR | DC_128BIT_HASH; 1946 sc->dc_flags |= DC_REDUCED_MII_POLL | DC_21143_NWAY; 1947 break; 1948 case DC_DEVID(DC_VENDORID_LO, DC_DEVICEID_82C168): 1949 sc->dc_type = DC_TYPE_PNIC; 1950 sc->dc_flags |= DC_TX_STORENFWD | DC_TX_INTR_ALWAYS; 1951 sc->dc_flags |= DC_PNIC_RX_BUG_WAR; 1952 sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, M_NOWAIT); 1953 if (revision < DC_REVISION_82C169) 1954 sc->dc_pmode = DC_PMODE_SYM; 1955 break; 1956 case DC_DEVID(DC_VENDORID_ASIX, DC_DEVICEID_AX88140A): 1957 sc->dc_type = DC_TYPE_ASIX; 1958 sc->dc_flags |= DC_TX_USE_TX_INTR | DC_TX_INTR_FIRSTFRAG; 1959 sc->dc_flags |= DC_REDUCED_MII_POLL; 1960 sc->dc_pmode = DC_PMODE_MII; 1961 break; 1962 case DC_DEVID(DC_VENDORID_XIRCOM, DC_DEVICEID_X3201): 1963 sc->dc_type = DC_TYPE_XIRCOM; 1964 sc->dc_flags |= DC_TX_INTR_ALWAYS | DC_TX_COALESCE | 1965 DC_TX_ALIGN; 1966 /* 1967 * We don't actually need to coalesce, but we're doing 1968 * it to obtain a double word aligned buffer. 1969 * The DC_TX_COALESCE flag is required. 1970 */ 1971 sc->dc_pmode = DC_PMODE_MII; 1972 break; 1973 case DC_DEVID(DC_VENDORID_CONEXANT, DC_DEVICEID_RS7112): 1974 sc->dc_type = DC_TYPE_CONEXANT; 1975 sc->dc_flags |= DC_TX_INTR_ALWAYS; 1976 sc->dc_flags |= DC_REDUCED_MII_POLL; 1977 sc->dc_pmode = DC_PMODE_MII; 1978 dc_read_srom(sc, sc->dc_romwidth); 1979 break; 1980 default: 1981 device_printf(dev, "unknown device: %x\n", 1982 sc->dc_info->dc_devid); 1983 break; 1984 } 1985 1986 /* Save the cache line size. */ 1987 if (DC_IS_DAVICOM(sc)) 1988 sc->dc_cachesize = 0; 1989 else 1990 sc->dc_cachesize = pci_get_cachelnsz(dev); 1991 1992 /* Reset the adapter. */ 1993 dc_reset(sc); 1994 1995 /* Take 21143 out of snooze mode */ 1996 if (DC_IS_INTEL(sc) || DC_IS_XIRCOM(sc)) { 1997 command = pci_read_config(dev, DC_PCI_CFDD, 4); 1998 command &= ~(DC_CFDD_SNOOZE_MODE | DC_CFDD_SLEEP_MODE); 1999 pci_write_config(dev, DC_PCI_CFDD, command, 4); 2000 } 2001 2002 /* 2003 * Try to learn something about the supported media. 2004 * We know that ASIX and ADMtek and Davicom devices 2005 * will *always* be using MII media, so that's a no-brainer. 2006 * The tricky ones are the Macronix/PNIC II and the 2007 * Intel 21143. 2008 */ 2009 if (DC_IS_INTEL(sc)) 2010 dc_parse_21143_srom(sc); 2011 else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 2012 if (sc->dc_type == DC_TYPE_98713) 2013 sc->dc_pmode = DC_PMODE_MII; 2014 else 2015 sc->dc_pmode = DC_PMODE_SYM; 2016 } else if (!sc->dc_pmode) 2017 sc->dc_pmode = DC_PMODE_MII; 2018 2019 /* 2020 * Get station address from the EEPROM. 2021 */ 2022 switch(sc->dc_type) { 2023 case DC_TYPE_98713: 2024 case DC_TYPE_98713A: 2025 case DC_TYPE_987x5: 2026 case DC_TYPE_PNICII: 2027 dc_read_eeprom(sc, (caddr_t)&mac_offset, 2028 (DC_EE_NODEADDR_OFFSET / 2), 1, 0); 2029 dc_read_eeprom(sc, (caddr_t)&eaddr, (mac_offset / 2), 3, 0); 2030 break; 2031 case DC_TYPE_PNIC: 2032 dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1); 2033 break; 2034 case DC_TYPE_DM9102: 2035 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2036 #ifdef __sparc64__ 2037 /* 2038 * If this is an onboard dc(4) the station address read from 2039 * the EEPROM is all zero and we have to get it from the FCode. 2040 */ 2041 if (eaddr[0] == 0 && (eaddr[1] & ~0xffff) == 0) 2042 OF_getetheraddr(dev, (caddr_t)&eaddr); 2043 #endif 2044 break; 2045 case DC_TYPE_21143: 2046 case DC_TYPE_ASIX: 2047 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2048 break; 2049 case DC_TYPE_AL981: 2050 case DC_TYPE_AN985: 2051 eaddr[0] = CSR_READ_4(sc, DC_AL_PAR0); 2052 eaddr[1] = CSR_READ_4(sc, DC_AL_PAR1); 2053 break; 2054 case DC_TYPE_CONEXANT: 2055 bcopy(sc->dc_srom + DC_CONEXANT_EE_NODEADDR, &eaddr, 2056 ETHER_ADDR_LEN); 2057 break; 2058 case DC_TYPE_XIRCOM: 2059 /* The MAC comes from the CIS. */ 2060 mac = pci_get_ether(dev); 2061 if (!mac) { 2062 device_printf(dev, "No station address in CIS!\n"); 2063 error = ENXIO; 2064 goto fail; 2065 } 2066 bcopy(mac, eaddr, ETHER_ADDR_LEN); 2067 break; 2068 default: 2069 dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); 2070 break; 2071 } 2072 2073 /* Allocate a busdma tag and DMA safe memory for TX/RX descriptors. */ 2074 error = bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, 2075 BUS_SPACE_MAXADDR, NULL, NULL, sizeof(struct dc_list_data), 1, 2076 sizeof(struct dc_list_data), 0, NULL, NULL, &sc->dc_ltag); 2077 if (error) { 2078 device_printf(dev, "failed to allocate busdma tag\n"); 2079 error = ENXIO; 2080 goto fail; 2081 } 2082 error = bus_dmamem_alloc(sc->dc_ltag, (void **)&sc->dc_ldata, 2083 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &sc->dc_lmap); 2084 if (error) { 2085 device_printf(dev, "failed to allocate DMA safe memory\n"); 2086 error = ENXIO; 2087 goto fail; 2088 } 2089 error = bus_dmamap_load(sc->dc_ltag, sc->dc_lmap, sc->dc_ldata, 2090 sizeof(struct dc_list_data), dc_dma_map_addr, &sc->dc_laddr, 2091 BUS_DMA_NOWAIT); 2092 if (error) { 2093 device_printf(dev, "cannot get address of the descriptors\n"); 2094 error = ENXIO; 2095 goto fail; 2096 } 2097 2098 /* 2099 * Allocate a busdma tag and DMA safe memory for the multicast 2100 * setup frame. 2101 */ 2102 error = bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, 2103 BUS_SPACE_MAXADDR, NULL, NULL, DC_SFRAME_LEN + DC_MIN_FRAMELEN, 1, 2104 DC_SFRAME_LEN + DC_MIN_FRAMELEN, 0, NULL, NULL, &sc->dc_stag); 2105 if (error) { 2106 device_printf(dev, "failed to allocate busdma tag\n"); 2107 error = ENXIO; 2108 goto fail; 2109 } 2110 error = bus_dmamem_alloc(sc->dc_stag, (void **)&sc->dc_cdata.dc_sbuf, 2111 BUS_DMA_NOWAIT, &sc->dc_smap); 2112 if (error) { 2113 device_printf(dev, "failed to allocate DMA safe memory\n"); 2114 error = ENXIO; 2115 goto fail; 2116 } 2117 error = bus_dmamap_load(sc->dc_stag, sc->dc_smap, sc->dc_cdata.dc_sbuf, 2118 DC_SFRAME_LEN, dc_dma_map_addr, &sc->dc_saddr, BUS_DMA_NOWAIT); 2119 if (error) { 2120 device_printf(dev, "cannot get address of the descriptors\n"); 2121 error = ENXIO; 2122 goto fail; 2123 } 2124 2125 /* Allocate a busdma tag for mbufs. */ 2126 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 2127 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, DC_TX_LIST_CNT, MCLBYTES, 2128 0, NULL, NULL, &sc->dc_mtag); 2129 if (error) { 2130 device_printf(dev, "failed to allocate busdma tag\n"); 2131 error = ENXIO; 2132 goto fail; 2133 } 2134 2135 /* Create the TX/RX busdma maps. */ 2136 for (i = 0; i < DC_TX_LIST_CNT; i++) { 2137 error = bus_dmamap_create(sc->dc_mtag, 0, 2138 &sc->dc_cdata.dc_tx_map[i]); 2139 if (error) { 2140 device_printf(dev, "failed to init TX ring\n"); 2141 error = ENXIO; 2142 goto fail; 2143 } 2144 } 2145 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2146 error = bus_dmamap_create(sc->dc_mtag, 0, 2147 &sc->dc_cdata.dc_rx_map[i]); 2148 if (error) { 2149 device_printf(dev, "failed to init RX ring\n"); 2150 error = ENXIO; 2151 goto fail; 2152 } 2153 } 2154 error = bus_dmamap_create(sc->dc_mtag, 0, &sc->dc_sparemap); 2155 if (error) { 2156 device_printf(dev, "failed to init RX ring\n"); 2157 error = ENXIO; 2158 goto fail; 2159 } 2160 2161 ifp = sc->dc_ifp = if_alloc(IFT_ETHER); 2162 if (ifp == NULL) { 2163 device_printf(dev, "can not if_alloc()\n"); 2164 error = ENOSPC; 2165 goto fail; 2166 } 2167 ifp->if_softc = sc; 2168 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 2169 /* XXX: bleah, MTU gets overwritten in ether_ifattach() */ 2170 ifp->if_mtu = ETHERMTU; 2171 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 2172 ifp->if_ioctl = dc_ioctl; 2173 ifp->if_start = dc_start; 2174 ifp->if_watchdog = dc_watchdog; 2175 ifp->if_init = dc_init; 2176 IFQ_SET_MAXLEN(&ifp->if_snd, DC_TX_LIST_CNT - 1); 2177 ifp->if_snd.ifq_drv_maxlen = DC_TX_LIST_CNT - 1; 2178 IFQ_SET_READY(&ifp->if_snd); 2179 2180 /* 2181 * Do MII setup. If this is a 21143, check for a PHY on the 2182 * MII bus after applying any necessary fixups to twiddle the 2183 * GPIO bits. If we don't end up finding a PHY, restore the 2184 * old selection (SIA only or SIA/SYM) and attach the dcphy 2185 * driver instead. 2186 */ 2187 if (DC_IS_INTEL(sc)) { 2188 dc_apply_fixup(sc, IFM_AUTO); 2189 tmp = sc->dc_pmode; 2190 sc->dc_pmode = DC_PMODE_MII; 2191 } 2192 2193 /* 2194 * Setup General Purpose port mode and data so the tulip can talk 2195 * to the MII. This needs to be done before mii_phy_probe so that 2196 * we can actually see them. 2197 */ 2198 if (DC_IS_XIRCOM(sc)) { 2199 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN | 2200 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 2201 DELAY(10); 2202 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN | 2203 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 2204 DELAY(10); 2205 } 2206 2207 error = mii_phy_probe(dev, &sc->dc_miibus, 2208 dc_ifmedia_upd, dc_ifmedia_sts); 2209 2210 if (error && DC_IS_INTEL(sc)) { 2211 sc->dc_pmode = tmp; 2212 if (sc->dc_pmode != DC_PMODE_SIA) 2213 sc->dc_pmode = DC_PMODE_SYM; 2214 sc->dc_flags |= DC_21143_NWAY; 2215 mii_phy_probe(dev, &sc->dc_miibus, 2216 dc_ifmedia_upd, dc_ifmedia_sts); 2217 /* 2218 * For non-MII cards, we need to have the 21143 2219 * drive the LEDs. Except there are some systems 2220 * like the NEC VersaPro NoteBook PC which have no 2221 * LEDs, and twiddling these bits has adverse effects 2222 * on them. (I.e. you suddenly can't get a link.) 2223 */ 2224 if (!(pci_get_subvendor(dev) == 0x1033 && 2225 pci_get_subdevice(dev) == 0x8028)) 2226 sc->dc_flags |= DC_TULIP_LEDS; 2227 error = 0; 2228 } 2229 2230 if (error) { 2231 device_printf(dev, "MII without any PHY!\n"); 2232 goto fail; 2233 } 2234 2235 if (DC_IS_ADMTEK(sc)) { 2236 /* 2237 * Set automatic TX underrun recovery for the ADMtek chips 2238 */ 2239 DC_SETBIT(sc, DC_AL_CR, DC_AL_CR_ATUR); 2240 } 2241 2242 /* 2243 * Tell the upper layer(s) we support long frames. 2244 */ 2245 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 2246 ifp->if_capabilities |= IFCAP_VLAN_MTU; 2247 ifp->if_capenable = ifp->if_capabilities; 2248 #ifdef DEVICE_POLLING 2249 ifp->if_capabilities |= IFCAP_POLLING; 2250 #endif 2251 2252 callout_init_mtx(&sc->dc_stat_ch, &sc->dc_mtx, 0); 2253 2254 /* 2255 * Call MI attach routine. 2256 */ 2257 ether_ifattach(ifp, (caddr_t)eaddr); 2258 2259 /* Hook interrupt last to avoid having to lock softc */ 2260 error = bus_setup_intr(dev, sc->dc_irq, INTR_TYPE_NET | INTR_MPSAFE, 2261 dc_intr, sc, &sc->dc_intrhand); 2262 2263 if (error) { 2264 device_printf(dev, "couldn't set up irq\n"); 2265 ether_ifdetach(ifp); 2266 goto fail; 2267 } 2268 2269 fail: 2270 if (error) 2271 dc_detach(dev); 2272 return (error); 2273 } 2274 2275 /* 2276 * Shutdown hardware and free up resources. This can be called any 2277 * time after the mutex has been initialized. It is called in both 2278 * the error case in attach and the normal detach case so it needs 2279 * to be careful about only freeing resources that have actually been 2280 * allocated. 2281 */ 2282 static int 2283 dc_detach(device_t dev) 2284 { 2285 struct dc_softc *sc; 2286 struct ifnet *ifp; 2287 struct dc_mediainfo *m; 2288 int i; 2289 2290 sc = device_get_softc(dev); 2291 KASSERT(mtx_initialized(&sc->dc_mtx), ("dc mutex not initialized")); 2292 2293 ifp = sc->dc_ifp; 2294 2295 #ifdef DEVICE_POLLING 2296 if (ifp->if_capenable & IFCAP_POLLING) 2297 ether_poll_deregister(ifp); 2298 #endif 2299 2300 /* These should only be active if attach succeeded */ 2301 if (device_is_attached(dev)) { 2302 DC_LOCK(sc); 2303 dc_stop(sc); 2304 DC_UNLOCK(sc); 2305 callout_drain(&sc->dc_stat_ch); 2306 ether_ifdetach(ifp); 2307 } 2308 if (sc->dc_miibus) 2309 device_delete_child(dev, sc->dc_miibus); 2310 bus_generic_detach(dev); 2311 2312 if (sc->dc_intrhand) 2313 bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand); 2314 if (sc->dc_irq) 2315 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq); 2316 if (sc->dc_res) 2317 bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); 2318 2319 if (ifp) 2320 if_free(ifp); 2321 2322 if (sc->dc_cdata.dc_sbuf != NULL) 2323 bus_dmamem_free(sc->dc_stag, sc->dc_cdata.dc_sbuf, sc->dc_smap); 2324 if (sc->dc_ldata != NULL) 2325 bus_dmamem_free(sc->dc_ltag, sc->dc_ldata, sc->dc_lmap); 2326 if (sc->dc_mtag) { 2327 for (i = 0; i < DC_TX_LIST_CNT; i++) 2328 if (sc->dc_cdata.dc_tx_map[i] != NULL) 2329 bus_dmamap_destroy(sc->dc_mtag, 2330 sc->dc_cdata.dc_tx_map[i]); 2331 for (i = 0; i < DC_RX_LIST_CNT; i++) 2332 if (sc->dc_cdata.dc_rx_map[i] != NULL) 2333 bus_dmamap_destroy(sc->dc_mtag, 2334 sc->dc_cdata.dc_rx_map[i]); 2335 bus_dmamap_destroy(sc->dc_mtag, sc->dc_sparemap); 2336 } 2337 if (sc->dc_stag) 2338 bus_dma_tag_destroy(sc->dc_stag); 2339 if (sc->dc_mtag) 2340 bus_dma_tag_destroy(sc->dc_mtag); 2341 if (sc->dc_ltag) 2342 bus_dma_tag_destroy(sc->dc_ltag); 2343 2344 free(sc->dc_pnic_rx_buf, M_DEVBUF); 2345 2346 while (sc->dc_mi != NULL) { 2347 m = sc->dc_mi->dc_next; 2348 free(sc->dc_mi, M_DEVBUF); 2349 sc->dc_mi = m; 2350 } 2351 free(sc->dc_srom, M_DEVBUF); 2352 2353 mtx_destroy(&sc->dc_mtx); 2354 2355 return (0); 2356 } 2357 2358 /* 2359 * Initialize the transmit descriptors. 2360 */ 2361 static int 2362 dc_list_tx_init(struct dc_softc *sc) 2363 { 2364 struct dc_chain_data *cd; 2365 struct dc_list_data *ld; 2366 int i, nexti; 2367 2368 cd = &sc->dc_cdata; 2369 ld = sc->dc_ldata; 2370 for (i = 0; i < DC_TX_LIST_CNT; i++) { 2371 if (i == DC_TX_LIST_CNT - 1) 2372 nexti = 0; 2373 else 2374 nexti = i + 1; 2375 ld->dc_tx_list[i].dc_next = htole32(DC_TXDESC(sc, nexti)); 2376 cd->dc_tx_chain[i] = NULL; 2377 ld->dc_tx_list[i].dc_data = 0; 2378 ld->dc_tx_list[i].dc_ctl = 0; 2379 } 2380 2381 cd->dc_tx_prod = cd->dc_tx_cons = cd->dc_tx_cnt = 0; 2382 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2383 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2384 return (0); 2385 } 2386 2387 2388 /* 2389 * Initialize the RX descriptors and allocate mbufs for them. Note that 2390 * we arrange the descriptors in a closed ring, so that the last descriptor 2391 * points back to the first. 2392 */ 2393 static int 2394 dc_list_rx_init(struct dc_softc *sc) 2395 { 2396 struct dc_chain_data *cd; 2397 struct dc_list_data *ld; 2398 int i, nexti; 2399 2400 cd = &sc->dc_cdata; 2401 ld = sc->dc_ldata; 2402 2403 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2404 if (dc_newbuf(sc, i, 1) != 0) 2405 return (ENOBUFS); 2406 if (i == DC_RX_LIST_CNT - 1) 2407 nexti = 0; 2408 else 2409 nexti = i + 1; 2410 ld->dc_rx_list[i].dc_next = htole32(DC_RXDESC(sc, nexti)); 2411 } 2412 2413 cd->dc_rx_prod = 0; 2414 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2415 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2416 return (0); 2417 } 2418 2419 static void 2420 dc_dma_map_rxbuf(arg, segs, nseg, mapsize, error) 2421 void *arg; 2422 bus_dma_segment_t *segs; 2423 int nseg; 2424 bus_size_t mapsize; 2425 int error; 2426 { 2427 struct dc_softc *sc; 2428 struct dc_desc *c; 2429 2430 sc = arg; 2431 c = &sc->dc_ldata->dc_rx_list[sc->dc_cdata.dc_rx_cur]; 2432 if (error) { 2433 sc->dc_cdata.dc_rx_err = error; 2434 return; 2435 } 2436 2437 KASSERT(nseg == 1, ("wrong number of segments, should be 1")); 2438 sc->dc_cdata.dc_rx_err = 0; 2439 c->dc_data = htole32(segs->ds_addr); 2440 } 2441 2442 /* 2443 * Initialize an RX descriptor and attach an MBUF cluster. 2444 */ 2445 static int 2446 dc_newbuf(struct dc_softc *sc, int i, int alloc) 2447 { 2448 struct mbuf *m_new; 2449 bus_dmamap_t tmp; 2450 int error; 2451 2452 if (alloc) { 2453 m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 2454 if (m_new == NULL) 2455 return (ENOBUFS); 2456 } else { 2457 m_new = sc->dc_cdata.dc_rx_chain[i]; 2458 m_new->m_data = m_new->m_ext.ext_buf; 2459 } 2460 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 2461 m_adj(m_new, sizeof(u_int64_t)); 2462 2463 /* 2464 * If this is a PNIC chip, zero the buffer. This is part 2465 * of the workaround for the receive bug in the 82c168 and 2466 * 82c169 chips. 2467 */ 2468 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) 2469 bzero(mtod(m_new, char *), m_new->m_len); 2470 2471 /* No need to remap the mbuf if we're reusing it. */ 2472 if (alloc) { 2473 sc->dc_cdata.dc_rx_cur = i; 2474 error = bus_dmamap_load_mbuf(sc->dc_mtag, sc->dc_sparemap, 2475 m_new, dc_dma_map_rxbuf, sc, 0); 2476 if (error) { 2477 m_freem(m_new); 2478 return (error); 2479 } 2480 if (sc->dc_cdata.dc_rx_err != 0) { 2481 m_freem(m_new); 2482 return (sc->dc_cdata.dc_rx_err); 2483 } 2484 bus_dmamap_unload(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i]); 2485 tmp = sc->dc_cdata.dc_rx_map[i]; 2486 sc->dc_cdata.dc_rx_map[i] = sc->dc_sparemap; 2487 sc->dc_sparemap = tmp; 2488 sc->dc_cdata.dc_rx_chain[i] = m_new; 2489 } 2490 2491 sc->dc_ldata->dc_rx_list[i].dc_ctl = htole32(DC_RXCTL_RLINK | DC_RXLEN); 2492 sc->dc_ldata->dc_rx_list[i].dc_status = htole32(DC_RXSTAT_OWN); 2493 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i], 2494 BUS_DMASYNC_PREREAD); 2495 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 2496 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 2497 return (0); 2498 } 2499 2500 /* 2501 * Grrrrr. 2502 * The PNIC chip has a terrible bug in it that manifests itself during 2503 * periods of heavy activity. The exact mode of failure if difficult to 2504 * pinpoint: sometimes it only happens in promiscuous mode, sometimes it 2505 * will happen on slow machines. The bug is that sometimes instead of 2506 * uploading one complete frame during reception, it uploads what looks 2507 * like the entire contents of its FIFO memory. The frame we want is at 2508 * the end of the whole mess, but we never know exactly how much data has 2509 * been uploaded, so salvaging the frame is hard. 2510 * 2511 * There is only one way to do it reliably, and it's disgusting. 2512 * Here's what we know: 2513 * 2514 * - We know there will always be somewhere between one and three extra 2515 * descriptors uploaded. 2516 * 2517 * - We know the desired received frame will always be at the end of the 2518 * total data upload. 2519 * 2520 * - We know the size of the desired received frame because it will be 2521 * provided in the length field of the status word in the last descriptor. 2522 * 2523 * Here's what we do: 2524 * 2525 * - When we allocate buffers for the receive ring, we bzero() them. 2526 * This means that we know that the buffer contents should be all 2527 * zeros, except for data uploaded by the chip. 2528 * 2529 * - We also force the PNIC chip to upload frames that include the 2530 * ethernet CRC at the end. 2531 * 2532 * - We gather all of the bogus frame data into a single buffer. 2533 * 2534 * - We then position a pointer at the end of this buffer and scan 2535 * backwards until we encounter the first non-zero byte of data. 2536 * This is the end of the received frame. We know we will encounter 2537 * some data at the end of the frame because the CRC will always be 2538 * there, so even if the sender transmits a packet of all zeros, 2539 * we won't be fooled. 2540 * 2541 * - We know the size of the actual received frame, so we subtract 2542 * that value from the current pointer location. This brings us 2543 * to the start of the actual received packet. 2544 * 2545 * - We copy this into an mbuf and pass it on, along with the actual 2546 * frame length. 2547 * 2548 * The performance hit is tremendous, but it beats dropping frames all 2549 * the time. 2550 */ 2551 2552 #define DC_WHOLEFRAME (DC_RXSTAT_FIRSTFRAG | DC_RXSTAT_LASTFRAG) 2553 static void 2554 dc_pnic_rx_bug_war(struct dc_softc *sc, int idx) 2555 { 2556 struct dc_desc *cur_rx; 2557 struct dc_desc *c = NULL; 2558 struct mbuf *m = NULL; 2559 unsigned char *ptr; 2560 int i, total_len; 2561 u_int32_t rxstat = 0; 2562 2563 i = sc->dc_pnic_rx_bug_save; 2564 cur_rx = &sc->dc_ldata->dc_rx_list[idx]; 2565 ptr = sc->dc_pnic_rx_buf; 2566 bzero(ptr, DC_RXLEN * 5); 2567 2568 /* Copy all the bytes from the bogus buffers. */ 2569 while (1) { 2570 c = &sc->dc_ldata->dc_rx_list[i]; 2571 rxstat = le32toh(c->dc_status); 2572 m = sc->dc_cdata.dc_rx_chain[i]; 2573 bcopy(mtod(m, char *), ptr, DC_RXLEN); 2574 ptr += DC_RXLEN; 2575 /* If this is the last buffer, break out. */ 2576 if (i == idx || rxstat & DC_RXSTAT_LASTFRAG) 2577 break; 2578 dc_newbuf(sc, i, 0); 2579 DC_INC(i, DC_RX_LIST_CNT); 2580 } 2581 2582 /* Find the length of the actual receive frame. */ 2583 total_len = DC_RXBYTES(rxstat); 2584 2585 /* Scan backwards until we hit a non-zero byte. */ 2586 while (*ptr == 0x00) 2587 ptr--; 2588 2589 /* Round off. */ 2590 if ((uintptr_t)(ptr) & 0x3) 2591 ptr -= 1; 2592 2593 /* Now find the start of the frame. */ 2594 ptr -= total_len; 2595 if (ptr < sc->dc_pnic_rx_buf) 2596 ptr = sc->dc_pnic_rx_buf; 2597 2598 /* 2599 * Now copy the salvaged frame to the last mbuf and fake up 2600 * the status word to make it look like a successful 2601 * frame reception. 2602 */ 2603 dc_newbuf(sc, i, 0); 2604 bcopy(ptr, mtod(m, char *), total_len); 2605 cur_rx->dc_status = htole32(rxstat | DC_RXSTAT_FIRSTFRAG); 2606 } 2607 2608 /* 2609 * This routine searches the RX ring for dirty descriptors in the 2610 * event that the rxeof routine falls out of sync with the chip's 2611 * current descriptor pointer. This may happen sometimes as a result 2612 * of a "no RX buffer available" condition that happens when the chip 2613 * consumes all of the RX buffers before the driver has a chance to 2614 * process the RX ring. This routine may need to be called more than 2615 * once to bring the driver back in sync with the chip, however we 2616 * should still be getting RX DONE interrupts to drive the search 2617 * for new packets in the RX ring, so we should catch up eventually. 2618 */ 2619 static int 2620 dc_rx_resync(struct dc_softc *sc) 2621 { 2622 struct dc_desc *cur_rx; 2623 int i, pos; 2624 2625 pos = sc->dc_cdata.dc_rx_prod; 2626 2627 for (i = 0; i < DC_RX_LIST_CNT; i++) { 2628 cur_rx = &sc->dc_ldata->dc_rx_list[pos]; 2629 if (!(le32toh(cur_rx->dc_status) & DC_RXSTAT_OWN)) 2630 break; 2631 DC_INC(pos, DC_RX_LIST_CNT); 2632 } 2633 2634 /* If the ring really is empty, then just return. */ 2635 if (i == DC_RX_LIST_CNT) 2636 return (0); 2637 2638 /* We've fallen behing the chip: catch it. */ 2639 sc->dc_cdata.dc_rx_prod = pos; 2640 2641 return (EAGAIN); 2642 } 2643 2644 /* 2645 * A frame has been uploaded: pass the resulting mbuf chain up to 2646 * the higher level protocols. 2647 */ 2648 static void 2649 dc_rxeof(struct dc_softc *sc) 2650 { 2651 struct mbuf *m; 2652 struct ifnet *ifp; 2653 struct dc_desc *cur_rx; 2654 int i, total_len = 0; 2655 u_int32_t rxstat; 2656 2657 DC_LOCK_ASSERT(sc); 2658 2659 ifp = sc->dc_ifp; 2660 i = sc->dc_cdata.dc_rx_prod; 2661 2662 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, BUS_DMASYNC_POSTREAD); 2663 while (!(le32toh(sc->dc_ldata->dc_rx_list[i].dc_status) & 2664 DC_RXSTAT_OWN)) { 2665 #ifdef DEVICE_POLLING 2666 if (ifp->if_capenable & IFCAP_POLLING) { 2667 if (sc->rxcycles <= 0) 2668 break; 2669 sc->rxcycles--; 2670 } 2671 #endif 2672 cur_rx = &sc->dc_ldata->dc_rx_list[i]; 2673 rxstat = le32toh(cur_rx->dc_status); 2674 m = sc->dc_cdata.dc_rx_chain[i]; 2675 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_rx_map[i], 2676 BUS_DMASYNC_POSTREAD); 2677 total_len = DC_RXBYTES(rxstat); 2678 2679 if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) { 2680 if ((rxstat & DC_WHOLEFRAME) != DC_WHOLEFRAME) { 2681 if (rxstat & DC_RXSTAT_FIRSTFRAG) 2682 sc->dc_pnic_rx_bug_save = i; 2683 if ((rxstat & DC_RXSTAT_LASTFRAG) == 0) { 2684 DC_INC(i, DC_RX_LIST_CNT); 2685 continue; 2686 } 2687 dc_pnic_rx_bug_war(sc, i); 2688 rxstat = le32toh(cur_rx->dc_status); 2689 total_len = DC_RXBYTES(rxstat); 2690 } 2691 } 2692 2693 /* 2694 * If an error occurs, update stats, clear the 2695 * status word and leave the mbuf cluster in place: 2696 * it should simply get re-used next time this descriptor 2697 * comes up in the ring. However, don't report long 2698 * frames as errors since they could be vlans. 2699 */ 2700 if ((rxstat & DC_RXSTAT_RXERR)) { 2701 if (!(rxstat & DC_RXSTAT_GIANT) || 2702 (rxstat & (DC_RXSTAT_CRCERR | DC_RXSTAT_DRIBBLE | 2703 DC_RXSTAT_MIIERE | DC_RXSTAT_COLLSEEN | 2704 DC_RXSTAT_RUNT | DC_RXSTAT_DE))) { 2705 ifp->if_ierrors++; 2706 if (rxstat & DC_RXSTAT_COLLSEEN) 2707 ifp->if_collisions++; 2708 dc_newbuf(sc, i, 0); 2709 if (rxstat & DC_RXSTAT_CRCERR) { 2710 DC_INC(i, DC_RX_LIST_CNT); 2711 continue; 2712 } else { 2713 dc_init_locked(sc); 2714 return; 2715 } 2716 } 2717 } 2718 2719 /* No errors; receive the packet. */ 2720 total_len -= ETHER_CRC_LEN; 2721 #ifdef __i386__ 2722 /* 2723 * On the x86 we do not have alignment problems, so try to 2724 * allocate a new buffer for the receive ring, and pass up 2725 * the one where the packet is already, saving the expensive 2726 * copy done in m_devget(). 2727 * If we are on an architecture with alignment problems, or 2728 * if the allocation fails, then use m_devget and leave the 2729 * existing buffer in the receive ring. 2730 */ 2731 if (dc_quick && dc_newbuf(sc, i, 1) == 0) { 2732 m->m_pkthdr.rcvif = ifp; 2733 m->m_pkthdr.len = m->m_len = total_len; 2734 DC_INC(i, DC_RX_LIST_CNT); 2735 } else 2736 #endif 2737 { 2738 struct mbuf *m0; 2739 2740 m0 = m_devget(mtod(m, char *), total_len, 2741 ETHER_ALIGN, ifp, NULL); 2742 dc_newbuf(sc, i, 0); 2743 DC_INC(i, DC_RX_LIST_CNT); 2744 if (m0 == NULL) { 2745 ifp->if_ierrors++; 2746 continue; 2747 } 2748 m = m0; 2749 } 2750 2751 ifp->if_ipackets++; 2752 DC_UNLOCK(sc); 2753 (*ifp->if_input)(ifp, m); 2754 DC_LOCK(sc); 2755 } 2756 2757 sc->dc_cdata.dc_rx_prod = i; 2758 } 2759 2760 /* 2761 * A frame was downloaded to the chip. It's safe for us to clean up 2762 * the list buffers. 2763 */ 2764 2765 static void 2766 dc_txeof(struct dc_softc *sc) 2767 { 2768 struct dc_desc *cur_tx = NULL; 2769 struct ifnet *ifp; 2770 int idx; 2771 u_int32_t ctl, txstat; 2772 2773 ifp = sc->dc_ifp; 2774 2775 /* 2776 * Go through our tx list and free mbufs for those 2777 * frames that have been transmitted. 2778 */ 2779 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, BUS_DMASYNC_POSTREAD); 2780 idx = sc->dc_cdata.dc_tx_cons; 2781 while (idx != sc->dc_cdata.dc_tx_prod) { 2782 2783 cur_tx = &sc->dc_ldata->dc_tx_list[idx]; 2784 txstat = le32toh(cur_tx->dc_status); 2785 ctl = le32toh(cur_tx->dc_ctl); 2786 2787 if (txstat & DC_TXSTAT_OWN) 2788 break; 2789 2790 if (!(ctl & DC_TXCTL_LASTFRAG) || ctl & DC_TXCTL_SETUP) { 2791 if (ctl & DC_TXCTL_SETUP) { 2792 /* 2793 * Yes, the PNIC is so brain damaged 2794 * that it will sometimes generate a TX 2795 * underrun error while DMAing the RX 2796 * filter setup frame. If we detect this, 2797 * we have to send the setup frame again, 2798 * or else the filter won't be programmed 2799 * correctly. 2800 */ 2801 if (DC_IS_PNIC(sc)) { 2802 if (txstat & DC_TXSTAT_ERRSUM) 2803 dc_setfilt(sc); 2804 } 2805 sc->dc_cdata.dc_tx_chain[idx] = NULL; 2806 } 2807 sc->dc_cdata.dc_tx_cnt--; 2808 DC_INC(idx, DC_TX_LIST_CNT); 2809 continue; 2810 } 2811 2812 if (DC_IS_XIRCOM(sc) || DC_IS_CONEXANT(sc)) { 2813 /* 2814 * XXX: Why does my Xircom taunt me so? 2815 * For some reason it likes setting the CARRLOST flag 2816 * even when the carrier is there. wtf?!? 2817 * Who knows, but Conexant chips have the 2818 * same problem. Maybe they took lessons 2819 * from Xircom. 2820 */ 2821 if (/*sc->dc_type == DC_TYPE_21143 &&*/ 2822 sc->dc_pmode == DC_PMODE_MII && 2823 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM | 2824 DC_TXSTAT_NOCARRIER))) 2825 txstat &= ~DC_TXSTAT_ERRSUM; 2826 } else { 2827 if (/*sc->dc_type == DC_TYPE_21143 &&*/ 2828 sc->dc_pmode == DC_PMODE_MII && 2829 ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM | 2830 DC_TXSTAT_NOCARRIER | DC_TXSTAT_CARRLOST))) 2831 txstat &= ~DC_TXSTAT_ERRSUM; 2832 } 2833 2834 if (txstat & DC_TXSTAT_ERRSUM) { 2835 ifp->if_oerrors++; 2836 if (txstat & DC_TXSTAT_EXCESSCOLL) 2837 ifp->if_collisions++; 2838 if (txstat & DC_TXSTAT_LATECOLL) 2839 ifp->if_collisions++; 2840 if (!(txstat & DC_TXSTAT_UNDERRUN)) { 2841 dc_init_locked(sc); 2842 return; 2843 } 2844 } 2845 2846 ifp->if_collisions += (txstat & DC_TXSTAT_COLLCNT) >> 3; 2847 2848 ifp->if_opackets++; 2849 if (sc->dc_cdata.dc_tx_chain[idx] != NULL) { 2850 bus_dmamap_sync(sc->dc_mtag, 2851 sc->dc_cdata.dc_tx_map[idx], 2852 BUS_DMASYNC_POSTWRITE); 2853 bus_dmamap_unload(sc->dc_mtag, 2854 sc->dc_cdata.dc_tx_map[idx]); 2855 m_freem(sc->dc_cdata.dc_tx_chain[idx]); 2856 sc->dc_cdata.dc_tx_chain[idx] = NULL; 2857 } 2858 2859 sc->dc_cdata.dc_tx_cnt--; 2860 DC_INC(idx, DC_TX_LIST_CNT); 2861 } 2862 2863 if (idx != sc->dc_cdata.dc_tx_cons) { 2864 /* Some buffers have been freed. */ 2865 sc->dc_cdata.dc_tx_cons = idx; 2866 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2867 } 2868 ifp->if_timer = (sc->dc_cdata.dc_tx_cnt == 0) ? 0 : 5; 2869 } 2870 2871 static void 2872 dc_tick(void *xsc) 2873 { 2874 struct dc_softc *sc; 2875 struct mii_data *mii; 2876 struct ifnet *ifp; 2877 u_int32_t r; 2878 2879 sc = xsc; 2880 DC_LOCK_ASSERT(sc); 2881 ifp = sc->dc_ifp; 2882 mii = device_get_softc(sc->dc_miibus); 2883 2884 if (sc->dc_flags & DC_REDUCED_MII_POLL) { 2885 if (sc->dc_flags & DC_21143_NWAY) { 2886 r = CSR_READ_4(sc, DC_10BTSTAT); 2887 if (IFM_SUBTYPE(mii->mii_media_active) == 2888 IFM_100_TX && (r & DC_TSTAT_LS100)) { 2889 sc->dc_link = 0; 2890 mii_mediachg(mii); 2891 } 2892 if (IFM_SUBTYPE(mii->mii_media_active) == 2893 IFM_10_T && (r & DC_TSTAT_LS10)) { 2894 sc->dc_link = 0; 2895 mii_mediachg(mii); 2896 } 2897 if (sc->dc_link == 0) 2898 mii_tick(mii); 2899 } else { 2900 r = CSR_READ_4(sc, DC_ISR); 2901 if ((r & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT && 2902 sc->dc_cdata.dc_tx_cnt == 0) { 2903 mii_tick(mii); 2904 if (!(mii->mii_media_status & IFM_ACTIVE)) 2905 sc->dc_link = 0; 2906 } 2907 } 2908 } else 2909 mii_tick(mii); 2910 2911 /* 2912 * When the init routine completes, we expect to be able to send 2913 * packets right away, and in fact the network code will send a 2914 * gratuitous ARP the moment the init routine marks the interface 2915 * as running. However, even though the MAC may have been initialized, 2916 * there may be a delay of a few seconds before the PHY completes 2917 * autonegotiation and the link is brought up. Any transmissions 2918 * made during that delay will be lost. Dealing with this is tricky: 2919 * we can't just pause in the init routine while waiting for the 2920 * PHY to come ready since that would bring the whole system to 2921 * a screeching halt for several seconds. 2922 * 2923 * What we do here is prevent the TX start routine from sending 2924 * any packets until a link has been established. After the 2925 * interface has been initialized, the tick routine will poll 2926 * the state of the PHY until the IFM_ACTIVE flag is set. Until 2927 * that time, packets will stay in the send queue, and once the 2928 * link comes up, they will be flushed out to the wire. 2929 */ 2930 if (!sc->dc_link && mii->mii_media_status & IFM_ACTIVE && 2931 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 2932 sc->dc_link++; 2933 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 2934 dc_start_locked(ifp); 2935 } 2936 2937 if (sc->dc_flags & DC_21143_NWAY && !sc->dc_link) 2938 callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc); 2939 else 2940 callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc); 2941 } 2942 2943 /* 2944 * A transmit underrun has occurred. Back off the transmit threshold, 2945 * or switch to store and forward mode if we have to. 2946 */ 2947 static void 2948 dc_tx_underrun(struct dc_softc *sc) 2949 { 2950 u_int32_t isr; 2951 int i; 2952 2953 if (DC_IS_DAVICOM(sc)) 2954 dc_init_locked(sc); 2955 2956 if (DC_IS_INTEL(sc)) { 2957 /* 2958 * The real 21143 requires that the transmitter be idle 2959 * in order to change the transmit threshold or store 2960 * and forward state. 2961 */ 2962 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 2963 2964 for (i = 0; i < DC_TIMEOUT; i++) { 2965 isr = CSR_READ_4(sc, DC_ISR); 2966 if (isr & DC_ISR_TX_IDLE) 2967 break; 2968 DELAY(10); 2969 } 2970 if (i == DC_TIMEOUT) { 2971 if_printf(sc->dc_ifp, 2972 "failed to force tx to idle state\n"); 2973 dc_init_locked(sc); 2974 } 2975 } 2976 2977 if_printf(sc->dc_ifp, "TX underrun -- "); 2978 sc->dc_txthresh += DC_TXTHRESH_INC; 2979 if (sc->dc_txthresh > DC_TXTHRESH_MAX) { 2980 printf("using store and forward mode\n"); 2981 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 2982 } else { 2983 printf("increasing TX threshold\n"); 2984 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); 2985 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); 2986 } 2987 2988 if (DC_IS_INTEL(sc)) 2989 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 2990 } 2991 2992 #ifdef DEVICE_POLLING 2993 static poll_handler_t dc_poll; 2994 2995 static void 2996 dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 2997 { 2998 struct dc_softc *sc = ifp->if_softc; 2999 3000 DC_LOCK(sc); 3001 3002 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 3003 DC_UNLOCK(sc); 3004 return; 3005 } 3006 3007 sc->rxcycles = count; 3008 dc_rxeof(sc); 3009 dc_txeof(sc); 3010 if (!IFQ_IS_EMPTY(&ifp->if_snd) && 3011 !(ifp->if_drv_flags & IFF_DRV_OACTIVE)) 3012 dc_start_locked(ifp); 3013 3014 if (cmd == POLL_AND_CHECK_STATUS) { /* also check status register */ 3015 u_int32_t status; 3016 3017 status = CSR_READ_4(sc, DC_ISR); 3018 status &= (DC_ISR_RX_WATDOGTIMEO | DC_ISR_RX_NOBUF | 3019 DC_ISR_TX_NOBUF | DC_ISR_TX_IDLE | DC_ISR_TX_UNDERRUN | 3020 DC_ISR_BUS_ERR); 3021 if (!status) { 3022 DC_UNLOCK(sc); 3023 return; 3024 } 3025 /* ack what we have */ 3026 CSR_WRITE_4(sc, DC_ISR, status); 3027 3028 if (status & (DC_ISR_RX_WATDOGTIMEO | DC_ISR_RX_NOBUF)) { 3029 u_int32_t r = CSR_READ_4(sc, DC_FRAMESDISCARDED); 3030 ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff); 3031 3032 if (dc_rx_resync(sc)) 3033 dc_rxeof(sc); 3034 } 3035 /* restart transmit unit if necessary */ 3036 if (status & DC_ISR_TX_IDLE && sc->dc_cdata.dc_tx_cnt) 3037 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3038 3039 if (status & DC_ISR_TX_UNDERRUN) 3040 dc_tx_underrun(sc); 3041 3042 if (status & DC_ISR_BUS_ERR) { 3043 if_printf(ifp, "dc_poll: bus error\n"); 3044 dc_reset(sc); 3045 dc_init_locked(sc); 3046 } 3047 } 3048 DC_UNLOCK(sc); 3049 } 3050 #endif /* DEVICE_POLLING */ 3051 3052 static void 3053 dc_intr(void *arg) 3054 { 3055 struct dc_softc *sc; 3056 struct ifnet *ifp; 3057 u_int32_t status; 3058 3059 sc = arg; 3060 3061 if (sc->suspended) 3062 return; 3063 3064 if ((CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0) 3065 return; 3066 3067 DC_LOCK(sc); 3068 ifp = sc->dc_ifp; 3069 #ifdef DEVICE_POLLING 3070 if (ifp->if_capenable & IFCAP_POLLING) { 3071 DC_UNLOCK(sc); 3072 return; 3073 } 3074 #endif 3075 3076 /* Suppress unwanted interrupts */ 3077 if (!(ifp->if_flags & IFF_UP)) { 3078 if (CSR_READ_4(sc, DC_ISR) & DC_INTRS) 3079 dc_stop(sc); 3080 DC_UNLOCK(sc); 3081 return; 3082 } 3083 3084 /* Disable interrupts. */ 3085 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3086 3087 while (((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) && 3088 status != 0xFFFFFFFF && 3089 (ifp->if_drv_flags & IFF_DRV_RUNNING)) { 3090 3091 CSR_WRITE_4(sc, DC_ISR, status); 3092 3093 if (status & DC_ISR_RX_OK) { 3094 int curpkts; 3095 curpkts = ifp->if_ipackets; 3096 dc_rxeof(sc); 3097 if (curpkts == ifp->if_ipackets) { 3098 while (dc_rx_resync(sc)) 3099 dc_rxeof(sc); 3100 } 3101 } 3102 3103 if (status & (DC_ISR_TX_OK | DC_ISR_TX_NOBUF)) 3104 dc_txeof(sc); 3105 3106 if (status & DC_ISR_TX_IDLE) { 3107 dc_txeof(sc); 3108 if (sc->dc_cdata.dc_tx_cnt) { 3109 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3110 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3111 } 3112 } 3113 3114 if (status & DC_ISR_TX_UNDERRUN) 3115 dc_tx_underrun(sc); 3116 3117 if ((status & DC_ISR_RX_WATDOGTIMEO) 3118 || (status & DC_ISR_RX_NOBUF)) { 3119 int curpkts; 3120 curpkts = ifp->if_ipackets; 3121 dc_rxeof(sc); 3122 if (curpkts == ifp->if_ipackets) { 3123 while (dc_rx_resync(sc)) 3124 dc_rxeof(sc); 3125 } 3126 } 3127 3128 if (status & DC_ISR_BUS_ERR) { 3129 dc_reset(sc); 3130 dc_init_locked(sc); 3131 } 3132 } 3133 3134 /* Re-enable interrupts. */ 3135 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3136 3137 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 3138 dc_start_locked(ifp); 3139 3140 DC_UNLOCK(sc); 3141 } 3142 3143 static void 3144 dc_dma_map_txbuf(arg, segs, nseg, mapsize, error) 3145 void *arg; 3146 bus_dma_segment_t *segs; 3147 int nseg; 3148 bus_size_t mapsize; 3149 int error; 3150 { 3151 struct dc_softc *sc; 3152 struct dc_desc *f; 3153 int cur, first, frag, i; 3154 3155 sc = arg; 3156 if (error) { 3157 sc->dc_cdata.dc_tx_err = error; 3158 return; 3159 } 3160 3161 first = cur = frag = sc->dc_cdata.dc_tx_prod; 3162 for (i = 0; i < nseg; i++) { 3163 if ((sc->dc_flags & DC_TX_ADMTEK_WAR) && 3164 (frag == (DC_TX_LIST_CNT - 1)) && 3165 (first != sc->dc_cdata.dc_tx_first)) { 3166 bus_dmamap_unload(sc->dc_mtag, 3167 sc->dc_cdata.dc_tx_map[first]); 3168 sc->dc_cdata.dc_tx_err = ENOBUFS; 3169 return; 3170 } 3171 3172 f = &sc->dc_ldata->dc_tx_list[frag]; 3173 f->dc_ctl = htole32(DC_TXCTL_TLINK | segs[i].ds_len); 3174 if (i == 0) { 3175 f->dc_status = 0; 3176 f->dc_ctl |= htole32(DC_TXCTL_FIRSTFRAG); 3177 } else 3178 f->dc_status = htole32(DC_TXSTAT_OWN); 3179 f->dc_data = htole32(segs[i].ds_addr); 3180 cur = frag; 3181 DC_INC(frag, DC_TX_LIST_CNT); 3182 } 3183 3184 sc->dc_cdata.dc_tx_err = 0; 3185 sc->dc_cdata.dc_tx_prod = frag; 3186 sc->dc_cdata.dc_tx_cnt += nseg; 3187 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_LASTFRAG); 3188 sc->dc_cdata.dc_tx_chain[cur] = sc->dc_cdata.dc_tx_mapping; 3189 if (sc->dc_flags & DC_TX_INTR_FIRSTFRAG) 3190 sc->dc_ldata->dc_tx_list[first].dc_ctl |= 3191 htole32(DC_TXCTL_FINT); 3192 if (sc->dc_flags & DC_TX_INTR_ALWAYS) 3193 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_FINT); 3194 if (sc->dc_flags & DC_TX_USE_TX_INTR && sc->dc_cdata.dc_tx_cnt > 64) 3195 sc->dc_ldata->dc_tx_list[cur].dc_ctl |= htole32(DC_TXCTL_FINT); 3196 sc->dc_ldata->dc_tx_list[first].dc_status = htole32(DC_TXSTAT_OWN); 3197 } 3198 3199 /* 3200 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 3201 * pointers to the fragment pointers. 3202 */ 3203 static int 3204 dc_encap(struct dc_softc *sc, struct mbuf **m_head) 3205 { 3206 struct mbuf *m; 3207 int error, idx, chainlen = 0; 3208 3209 /* 3210 * If there's no way we can send any packets, return now. 3211 */ 3212 if (DC_TX_LIST_CNT - sc->dc_cdata.dc_tx_cnt < 6) 3213 return (ENOBUFS); 3214 3215 /* 3216 * Count the number of frags in this chain to see if 3217 * we need to m_defrag. Since the descriptor list is shared 3218 * by all packets, we'll m_defrag long chains so that they 3219 * do not use up the entire list, even if they would fit. 3220 */ 3221 for (m = *m_head; m != NULL; m = m->m_next) 3222 chainlen++; 3223 3224 if ((chainlen > DC_TX_LIST_CNT / 4) || 3225 ((DC_TX_LIST_CNT - (chainlen + sc->dc_cdata.dc_tx_cnt)) < 6)) { 3226 m = m_defrag(*m_head, M_DONTWAIT); 3227 if (m == NULL) 3228 return (ENOBUFS); 3229 *m_head = m; 3230 } 3231 3232 /* 3233 * Start packing the mbufs in this chain into 3234 * the fragment pointers. Stop when we run out 3235 * of fragments or hit the end of the mbuf chain. 3236 */ 3237 idx = sc->dc_cdata.dc_tx_prod; 3238 sc->dc_cdata.dc_tx_mapping = *m_head; 3239 error = bus_dmamap_load_mbuf(sc->dc_mtag, sc->dc_cdata.dc_tx_map[idx], 3240 *m_head, dc_dma_map_txbuf, sc, 0); 3241 if (error) 3242 return (error); 3243 if (sc->dc_cdata.dc_tx_err != 0) 3244 return (sc->dc_cdata.dc_tx_err); 3245 bus_dmamap_sync(sc->dc_mtag, sc->dc_cdata.dc_tx_map[idx], 3246 BUS_DMASYNC_PREWRITE); 3247 bus_dmamap_sync(sc->dc_ltag, sc->dc_lmap, 3248 BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD); 3249 return (0); 3250 } 3251 3252 /* 3253 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 3254 * to the mbuf data regions directly in the transmit lists. We also save a 3255 * copy of the pointers since the transmit list fragment pointers are 3256 * physical addresses. 3257 */ 3258 3259 static void 3260 dc_start(struct ifnet *ifp) 3261 { 3262 struct dc_softc *sc; 3263 3264 sc = ifp->if_softc; 3265 DC_LOCK(sc); 3266 dc_start_locked(ifp); 3267 DC_UNLOCK(sc); 3268 } 3269 3270 static void 3271 dc_start_locked(struct ifnet *ifp) 3272 { 3273 struct dc_softc *sc; 3274 struct mbuf *m_head = NULL, *m; 3275 unsigned int queued = 0; 3276 int idx; 3277 3278 sc = ifp->if_softc; 3279 3280 DC_LOCK_ASSERT(sc); 3281 3282 if (!sc->dc_link && ifp->if_snd.ifq_len < 10) 3283 return; 3284 3285 if (ifp->if_drv_flags & IFF_DRV_OACTIVE) 3286 return; 3287 3288 idx = sc->dc_cdata.dc_tx_first = sc->dc_cdata.dc_tx_prod; 3289 3290 while (sc->dc_cdata.dc_tx_chain[idx] == NULL) { 3291 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 3292 if (m_head == NULL) 3293 break; 3294 3295 if (sc->dc_flags & DC_TX_COALESCE && 3296 (m_head->m_next != NULL || 3297 sc->dc_flags & DC_TX_ALIGN)) { 3298 m = m_defrag(m_head, M_DONTWAIT); 3299 if (m == NULL) { 3300 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 3301 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 3302 break; 3303 } else { 3304 m_head = m; 3305 } 3306 } 3307 3308 if (dc_encap(sc, &m_head)) { 3309 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 3310 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 3311 break; 3312 } 3313 idx = sc->dc_cdata.dc_tx_prod; 3314 3315 queued++; 3316 /* 3317 * If there's a BPF listener, bounce a copy of this frame 3318 * to him. 3319 */ 3320 BPF_MTAP(ifp, m_head); 3321 3322 if (sc->dc_flags & DC_TX_ONE) { 3323 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 3324 break; 3325 } 3326 } 3327 3328 if (queued > 0) { 3329 /* Transmit */ 3330 if (!(sc->dc_flags & DC_TX_POLL)) 3331 CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); 3332 3333 /* 3334 * Set a timeout in case the chip goes out to lunch. 3335 */ 3336 ifp->if_timer = 5; 3337 } 3338 } 3339 3340 static void 3341 dc_init(void *xsc) 3342 { 3343 struct dc_softc *sc = xsc; 3344 3345 DC_LOCK(sc); 3346 dc_init_locked(sc); 3347 DC_UNLOCK(sc); 3348 } 3349 3350 static void 3351 dc_init_locked(struct dc_softc *sc) 3352 { 3353 struct ifnet *ifp = sc->dc_ifp; 3354 struct mii_data *mii; 3355 3356 DC_LOCK_ASSERT(sc); 3357 3358 mii = device_get_softc(sc->dc_miibus); 3359 3360 /* 3361 * Cancel pending I/O and free all RX/TX buffers. 3362 */ 3363 dc_stop(sc); 3364 dc_reset(sc); 3365 3366 /* 3367 * Set cache alignment and burst length. 3368 */ 3369 if (DC_IS_ASIX(sc) || DC_IS_DAVICOM(sc)) 3370 CSR_WRITE_4(sc, DC_BUSCTL, 0); 3371 else 3372 CSR_WRITE_4(sc, DC_BUSCTL, DC_BUSCTL_MRME | DC_BUSCTL_MRLE); 3373 /* 3374 * Evenly share the bus between receive and transmit process. 3375 */ 3376 if (DC_IS_INTEL(sc)) 3377 DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_ARBITRATION); 3378 if (DC_IS_DAVICOM(sc) || DC_IS_INTEL(sc)) { 3379 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_USECA); 3380 } else { 3381 DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_16LONG); 3382 } 3383 if (sc->dc_flags & DC_TX_POLL) 3384 DC_SETBIT(sc, DC_BUSCTL, DC_TXPOLL_1); 3385 switch(sc->dc_cachesize) { 3386 case 32: 3387 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_32LONG); 3388 break; 3389 case 16: 3390 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_16LONG); 3391 break; 3392 case 8: 3393 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_8LONG); 3394 break; 3395 case 0: 3396 default: 3397 DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_NONE); 3398 break; 3399 } 3400 3401 if (sc->dc_flags & DC_TX_STORENFWD) 3402 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3403 else { 3404 if (sc->dc_txthresh > DC_TXTHRESH_MAX) { 3405 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3406 } else { 3407 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); 3408 DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); 3409 } 3410 } 3411 3412 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_NO_RXCRC); 3413 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_BACKOFF); 3414 3415 if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { 3416 /* 3417 * The app notes for the 98713 and 98715A say that 3418 * in order to have the chips operate properly, a magic 3419 * number must be written to CSR16. Macronix does not 3420 * document the meaning of these bits so there's no way 3421 * to know exactly what they do. The 98713 has a magic 3422 * number all its own; the rest all use a different one. 3423 */ 3424 DC_CLRBIT(sc, DC_MX_MAGICPACKET, 0xFFFF0000); 3425 if (sc->dc_type == DC_TYPE_98713) 3426 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98713); 3427 else 3428 DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98715); 3429 } 3430 3431 if (DC_IS_XIRCOM(sc)) { 3432 /* 3433 * setup General Purpose Port mode and data so the tulip 3434 * can talk to the MII. 3435 */ 3436 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_WRITE_EN | DC_SIAGP_INT1_EN | 3437 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 3438 DELAY(10); 3439 CSR_WRITE_4(sc, DC_SIAGP, DC_SIAGP_INT1_EN | 3440 DC_SIAGP_MD_GP2_OUTPUT | DC_SIAGP_MD_GP0_OUTPUT); 3441 DELAY(10); 3442 } 3443 3444 DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); 3445 DC_SETBIT(sc, DC_NETCFG, DC_TXTHRESH_MIN); 3446 3447 /* Init circular RX list. */ 3448 if (dc_list_rx_init(sc) == ENOBUFS) { 3449 if_printf(ifp, 3450 "initialization failed: no memory for rx buffers\n"); 3451 dc_stop(sc); 3452 return; 3453 } 3454 3455 /* 3456 * Init TX descriptors. 3457 */ 3458 dc_list_tx_init(sc); 3459 3460 /* 3461 * Load the address of the RX list. 3462 */ 3463 CSR_WRITE_4(sc, DC_RXADDR, DC_RXDESC(sc, 0)); 3464 CSR_WRITE_4(sc, DC_TXADDR, DC_TXDESC(sc, 0)); 3465 3466 /* 3467 * Enable interrupts. 3468 */ 3469 #ifdef DEVICE_POLLING 3470 /* 3471 * ... but only if we are not polling, and make sure they are off in 3472 * the case of polling. Some cards (e.g. fxp) turn interrupts on 3473 * after a reset. 3474 */ 3475 if (ifp->if_capenable & IFCAP_POLLING) 3476 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3477 else 3478 #endif 3479 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3480 CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF); 3481 3482 /* Enable transmitter. */ 3483 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); 3484 3485 /* 3486 * If this is an Intel 21143 and we're not using the 3487 * MII port, program the LED control pins so we get 3488 * link and activity indications. 3489 */ 3490 if (sc->dc_flags & DC_TULIP_LEDS) { 3491 CSR_WRITE_4(sc, DC_WATCHDOG, 3492 DC_WDOG_CTLWREN | DC_WDOG_LINK | DC_WDOG_ACTIVITY); 3493 CSR_WRITE_4(sc, DC_WATCHDOG, 0); 3494 } 3495 3496 /* 3497 * Load the RX/multicast filter. We do this sort of late 3498 * because the filter programming scheme on the 21143 and 3499 * some clones requires DMAing a setup frame via the TX 3500 * engine, and we need the transmitter enabled for that. 3501 */ 3502 dc_setfilt(sc); 3503 3504 /* Enable receiver. */ 3505 DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); 3506 CSR_WRITE_4(sc, DC_RXSTART, 0xFFFFFFFF); 3507 3508 mii_mediachg(mii); 3509 dc_setcfg(sc, sc->dc_if_media); 3510 3511 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3512 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3513 3514 /* Don't start the ticker if this is a homePNA link. */ 3515 if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1) 3516 sc->dc_link = 1; 3517 else { 3518 if (sc->dc_flags & DC_21143_NWAY) 3519 callout_reset(&sc->dc_stat_ch, hz/10, dc_tick, sc); 3520 else 3521 callout_reset(&sc->dc_stat_ch, hz, dc_tick, sc); 3522 } 3523 } 3524 3525 /* 3526 * Set media options. 3527 */ 3528 static int 3529 dc_ifmedia_upd(struct ifnet *ifp) 3530 { 3531 struct dc_softc *sc; 3532 struct mii_data *mii; 3533 struct ifmedia *ifm; 3534 3535 sc = ifp->if_softc; 3536 mii = device_get_softc(sc->dc_miibus); 3537 DC_LOCK(sc); 3538 mii_mediachg(mii); 3539 ifm = &mii->mii_media; 3540 3541 if (DC_IS_DAVICOM(sc) && 3542 IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) 3543 dc_setcfg(sc, ifm->ifm_media); 3544 else 3545 sc->dc_link = 0; 3546 DC_UNLOCK(sc); 3547 3548 return (0); 3549 } 3550 3551 /* 3552 * Report current media status. 3553 */ 3554 static void 3555 dc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 3556 { 3557 struct dc_softc *sc; 3558 struct mii_data *mii; 3559 struct ifmedia *ifm; 3560 3561 sc = ifp->if_softc; 3562 mii = device_get_softc(sc->dc_miibus); 3563 DC_LOCK(sc); 3564 mii_pollstat(mii); 3565 ifm = &mii->mii_media; 3566 if (DC_IS_DAVICOM(sc)) { 3567 if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) { 3568 ifmr->ifm_active = ifm->ifm_media; 3569 ifmr->ifm_status = 0; 3570 return; 3571 } 3572 } 3573 ifmr->ifm_active = mii->mii_media_active; 3574 ifmr->ifm_status = mii->mii_media_status; 3575 DC_UNLOCK(sc); 3576 } 3577 3578 static int 3579 dc_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 3580 { 3581 struct dc_softc *sc = ifp->if_softc; 3582 struct ifreq *ifr = (struct ifreq *)data; 3583 struct mii_data *mii; 3584 int error = 0; 3585 3586 switch (command) { 3587 case SIOCSIFFLAGS: 3588 DC_LOCK(sc); 3589 if (ifp->if_flags & IFF_UP) { 3590 int need_setfilt = (ifp->if_flags ^ sc->dc_if_flags) & 3591 (IFF_PROMISC | IFF_ALLMULTI); 3592 3593 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 3594 if (need_setfilt) 3595 dc_setfilt(sc); 3596 } else { 3597 sc->dc_txthresh = 0; 3598 dc_init_locked(sc); 3599 } 3600 } else { 3601 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3602 dc_stop(sc); 3603 } 3604 sc->dc_if_flags = ifp->if_flags; 3605 DC_UNLOCK(sc); 3606 error = 0; 3607 break; 3608 case SIOCADDMULTI: 3609 case SIOCDELMULTI: 3610 DC_LOCK(sc); 3611 dc_setfilt(sc); 3612 DC_UNLOCK(sc); 3613 error = 0; 3614 break; 3615 case SIOCGIFMEDIA: 3616 case SIOCSIFMEDIA: 3617 mii = device_get_softc(sc->dc_miibus); 3618 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 3619 break; 3620 case SIOCSIFCAP: 3621 #ifdef DEVICE_POLLING 3622 if (ifr->ifr_reqcap & IFCAP_POLLING && 3623 !(ifp->if_capenable & IFCAP_POLLING)) { 3624 error = ether_poll_register(dc_poll, ifp); 3625 if (error) 3626 return(error); 3627 DC_LOCK(sc); 3628 /* Disable interrupts */ 3629 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3630 ifp->if_capenable |= IFCAP_POLLING; 3631 DC_UNLOCK(sc); 3632 return (error); 3633 3634 } 3635 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 3636 ifp->if_capenable & IFCAP_POLLING) { 3637 error = ether_poll_deregister(ifp); 3638 /* Enable interrupts. */ 3639 DC_LOCK(sc); 3640 CSR_WRITE_4(sc, DC_IMR, DC_INTRS); 3641 ifp->if_capenable &= ~IFCAP_POLLING; 3642 DC_UNLOCK(sc); 3643 return (error); 3644 } 3645 #endif /* DEVICE_POLLING */ 3646 break; 3647 default: 3648 error = ether_ioctl(ifp, command, data); 3649 break; 3650 } 3651 3652 return (error); 3653 } 3654 3655 static void 3656 dc_watchdog(struct ifnet *ifp) 3657 { 3658 struct dc_softc *sc; 3659 3660 sc = ifp->if_softc; 3661 3662 DC_LOCK(sc); 3663 3664 ifp->if_oerrors++; 3665 if_printf(ifp, "watchdog timeout\n"); 3666 3667 dc_stop(sc); 3668 dc_reset(sc); 3669 dc_init_locked(sc); 3670 3671 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 3672 dc_start_locked(ifp); 3673 3674 DC_UNLOCK(sc); 3675 } 3676 3677 /* 3678 * Stop the adapter and free any mbufs allocated to the 3679 * RX and TX lists. 3680 */ 3681 static void 3682 dc_stop(struct dc_softc *sc) 3683 { 3684 struct ifnet *ifp; 3685 struct dc_list_data *ld; 3686 struct dc_chain_data *cd; 3687 int i; 3688 u_int32_t ctl; 3689 3690 DC_LOCK_ASSERT(sc); 3691 3692 ifp = sc->dc_ifp; 3693 ifp->if_timer = 0; 3694 ld = sc->dc_ldata; 3695 cd = &sc->dc_cdata; 3696 3697 callout_stop(&sc->dc_stat_ch); 3698 3699 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3700 3701 DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON | DC_NETCFG_TX_ON)); 3702 CSR_WRITE_4(sc, DC_IMR, 0x00000000); 3703 CSR_WRITE_4(sc, DC_TXADDR, 0x00000000); 3704 CSR_WRITE_4(sc, DC_RXADDR, 0x00000000); 3705 sc->dc_link = 0; 3706 3707 /* 3708 * Free data in the RX lists. 3709 */ 3710 for (i = 0; i < DC_RX_LIST_CNT; i++) { 3711 if (cd->dc_rx_chain[i] != NULL) { 3712 m_freem(cd->dc_rx_chain[i]); 3713 cd->dc_rx_chain[i] = NULL; 3714 } 3715 } 3716 bzero(&ld->dc_rx_list, sizeof(ld->dc_rx_list)); 3717 3718 /* 3719 * Free the TX list buffers. 3720 */ 3721 for (i = 0; i < DC_TX_LIST_CNT; i++) { 3722 if (cd->dc_tx_chain[i] != NULL) { 3723 ctl = le32toh(ld->dc_tx_list[i].dc_ctl); 3724 if ((ctl & DC_TXCTL_SETUP) || 3725 !(ctl & DC_TXCTL_LASTFRAG)) { 3726 cd->dc_tx_chain[i] = NULL; 3727 continue; 3728 } 3729 bus_dmamap_unload(sc->dc_mtag, cd->dc_tx_map[i]); 3730 m_freem(cd->dc_tx_chain[i]); 3731 cd->dc_tx_chain[i] = NULL; 3732 } 3733 } 3734 bzero(&ld->dc_tx_list, sizeof(ld->dc_tx_list)); 3735 } 3736 3737 /* 3738 * Device suspend routine. Stop the interface and save some PCI 3739 * settings in case the BIOS doesn't restore them properly on 3740 * resume. 3741 */ 3742 static int 3743 dc_suspend(device_t dev) 3744 { 3745 struct dc_softc *sc; 3746 3747 sc = device_get_softc(dev); 3748 DC_LOCK(sc); 3749 dc_stop(sc); 3750 sc->suspended = 1; 3751 DC_UNLOCK(sc); 3752 3753 return (0); 3754 } 3755 3756 /* 3757 * Device resume routine. Restore some PCI settings in case the BIOS 3758 * doesn't, re-enable busmastering, and restart the interface if 3759 * appropriate. 3760 */ 3761 static int 3762 dc_resume(device_t dev) 3763 { 3764 struct dc_softc *sc; 3765 struct ifnet *ifp; 3766 3767 sc = device_get_softc(dev); 3768 ifp = sc->dc_ifp; 3769 3770 /* reinitialize interface if necessary */ 3771 DC_LOCK(sc); 3772 if (ifp->if_flags & IFF_UP) 3773 dc_init_locked(sc); 3774 3775 sc->suspended = 0; 3776 DC_UNLOCK(sc); 3777 3778 return (0); 3779 } 3780 3781 /* 3782 * Stop all chip I/O so that the kernel's probe routines don't 3783 * get confused by errant DMAs when rebooting. 3784 */ 3785 static void 3786 dc_shutdown(device_t dev) 3787 { 3788 struct dc_softc *sc; 3789 3790 sc = device_get_softc(dev); 3791 3792 DC_LOCK(sc); 3793 dc_stop(sc); 3794 DC_UNLOCK(sc); 3795 } 3796