1 /* $NetBSD: rtl8169.c,v 1.129 2010/01/19 22:06:25 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998-2003 5 * Bill Paul <wpaul@windriver.com>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Bill Paul. 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: rtl8169.c,v 1.129 2010/01/19 22:06:25 pooka Exp $"); 37 /* $FreeBSD: /repoman/r/ncvs/src/sys/dev/re/if_re.c,v 1.20 2004/04/11 20:34:08 ru Exp $ */ 38 39 /* 40 * RealTek 8139C+/8169/8169S/8110S PCI NIC driver 41 * 42 * Written by Bill Paul <wpaul@windriver.com> 43 * Senior Networking Software Engineer 44 * Wind River Systems 45 */ 46 47 /* 48 * This driver is designed to support RealTek's next generation of 49 * 10/100 and 10/100/1000 PCI ethernet controllers. There are currently 50 * four devices in this family: the RTL8139C+, the RTL8169, the RTL8169S 51 * and the RTL8110S. 52 * 53 * The 8139C+ is a 10/100 ethernet chip. It is backwards compatible 54 * with the older 8139 family, however it also supports a special 55 * C+ mode of operation that provides several new performance enhancing 56 * features. These include: 57 * 58 * o Descriptor based DMA mechanism. Each descriptor represents 59 * a single packet fragment. Data buffers may be aligned on 60 * any byte boundary. 61 * 62 * o 64-bit DMA 63 * 64 * o TCP/IP checksum offload for both RX and TX 65 * 66 * o High and normal priority transmit DMA rings 67 * 68 * o VLAN tag insertion and extraction 69 * 70 * o TCP large send (segmentation offload) 71 * 72 * Like the 8139, the 8139C+ also has a built-in 10/100 PHY. The C+ 73 * programming API is fairly straightforward. The RX filtering, EEPROM 74 * access and PHY access is the same as it is on the older 8139 series 75 * chips. 76 * 77 * The 8169 is a 64-bit 10/100/1000 gigabit ethernet MAC. It has almost the 78 * same programming API and feature set as the 8139C+ with the following 79 * differences and additions: 80 * 81 * o 1000Mbps mode 82 * 83 * o Jumbo frames 84 * 85 * o GMII and TBI ports/registers for interfacing with copper 86 * or fiber PHYs 87 * 88 * o RX and TX DMA rings can have up to 1024 descriptors 89 * (the 8139C+ allows a maximum of 64) 90 * 91 * o Slight differences in register layout from the 8139C+ 92 * 93 * The TX start and timer interrupt registers are at different locations 94 * on the 8169 than they are on the 8139C+. Also, the status word in the 95 * RX descriptor has a slightly different bit layout. The 8169 does not 96 * have a built-in PHY. Most reference boards use a Marvell 88E1000 'Alaska' 97 * copper gigE PHY. 98 * 99 * The 8169S/8110S 10/100/1000 devices have built-in copper gigE PHYs 100 * (the 'S' stands for 'single-chip'). These devices have the same 101 * programming API as the older 8169, but also have some vendor-specific 102 * registers for the on-board PHY. The 8110S is a LAN-on-motherboard 103 * part designed to be pin-compatible with the RealTek 8100 10/100 chip. 104 * 105 * This driver takes advantage of the RX and TX checksum offload and 106 * VLAN tag insertion/extraction features. It also implements TX 107 * interrupt moderation using the timer interrupt registers, which 108 * significantly reduces TX interrupt load. There is also support 109 * for jumbo frames, however the 8169/8169S/8110S can not transmit 110 * jumbo frames larger than 7.5K, so the max MTU possible with this 111 * driver is 7500 bytes. 112 */ 113 114 115 #include <sys/param.h> 116 #include <sys/endian.h> 117 #include <sys/systm.h> 118 #include <sys/sockio.h> 119 #include <sys/mbuf.h> 120 #include <sys/malloc.h> 121 #include <sys/kernel.h> 122 #include <sys/socket.h> 123 #include <sys/device.h> 124 125 #include <net/if.h> 126 #include <net/if_arp.h> 127 #include <net/if_dl.h> 128 #include <net/if_ether.h> 129 #include <net/if_media.h> 130 #include <net/if_vlanvar.h> 131 132 #include <netinet/in_systm.h> /* XXX for IP_MAXPACKET */ 133 #include <netinet/in.h> /* XXX for IP_MAXPACKET */ 134 #include <netinet/ip.h> /* XXX for IP_MAXPACKET */ 135 136 #include <net/bpf.h> 137 138 #include <sys/bus.h> 139 140 #include <dev/mii/mii.h> 141 #include <dev/mii/miivar.h> 142 143 #include <dev/ic/rtl81x9reg.h> 144 #include <dev/ic/rtl81x9var.h> 145 146 #include <dev/ic/rtl8169var.h> 147 148 static inline void re_set_bufaddr(struct re_desc *, bus_addr_t); 149 150 static int re_newbuf(struct rtk_softc *, int, struct mbuf *); 151 static int re_rx_list_init(struct rtk_softc *); 152 static int re_tx_list_init(struct rtk_softc *); 153 static void re_rxeof(struct rtk_softc *); 154 static void re_txeof(struct rtk_softc *); 155 static void re_tick(void *); 156 static void re_start(struct ifnet *); 157 static int re_ioctl(struct ifnet *, u_long, void *); 158 static int re_init(struct ifnet *); 159 static void re_stop(struct ifnet *, int); 160 static void re_watchdog(struct ifnet *); 161 162 static int re_enable(struct rtk_softc *); 163 static void re_disable(struct rtk_softc *); 164 165 static int re_gmii_readreg(device_t, int, int); 166 static void re_gmii_writereg(device_t, int, int, int); 167 168 static int re_miibus_readreg(device_t, int, int); 169 static void re_miibus_writereg(device_t, int, int, int); 170 static void re_miibus_statchg(device_t); 171 172 static void re_reset(struct rtk_softc *); 173 174 static inline void 175 re_set_bufaddr(struct re_desc *d, bus_addr_t addr) 176 { 177 178 d->re_bufaddr_lo = htole32((uint32_t)addr); 179 if (sizeof(bus_addr_t) == sizeof(uint64_t)) 180 d->re_bufaddr_hi = htole32((uint64_t)addr >> 32); 181 else 182 d->re_bufaddr_hi = 0; 183 } 184 185 static int 186 re_gmii_readreg(device_t dev, int phy, int reg) 187 { 188 struct rtk_softc *sc = device_private(dev); 189 uint32_t rval; 190 int i; 191 192 if (phy != 7) 193 return 0; 194 195 /* Let the rgephy driver read the GMEDIASTAT register */ 196 197 if (reg == RTK_GMEDIASTAT) { 198 rval = CSR_READ_1(sc, RTK_GMEDIASTAT); 199 return rval; 200 } 201 202 CSR_WRITE_4(sc, RTK_PHYAR, reg << 16); 203 DELAY(1000); 204 205 for (i = 0; i < RTK_TIMEOUT; i++) { 206 rval = CSR_READ_4(sc, RTK_PHYAR); 207 if (rval & RTK_PHYAR_BUSY) 208 break; 209 DELAY(100); 210 } 211 212 if (i == RTK_TIMEOUT) { 213 printf("%s: PHY read failed\n", device_xname(sc->sc_dev)); 214 return 0; 215 } 216 217 return rval & RTK_PHYAR_PHYDATA; 218 } 219 220 static void 221 re_gmii_writereg(device_t dev, int phy, int reg, int data) 222 { 223 struct rtk_softc *sc = device_private(dev); 224 uint32_t rval; 225 int i; 226 227 CSR_WRITE_4(sc, RTK_PHYAR, (reg << 16) | 228 (data & RTK_PHYAR_PHYDATA) | RTK_PHYAR_BUSY); 229 DELAY(1000); 230 231 for (i = 0; i < RTK_TIMEOUT; i++) { 232 rval = CSR_READ_4(sc, RTK_PHYAR); 233 if (!(rval & RTK_PHYAR_BUSY)) 234 break; 235 DELAY(100); 236 } 237 238 if (i == RTK_TIMEOUT) { 239 printf("%s: PHY write reg %x <- %x failed\n", 240 device_xname(sc->sc_dev), reg, data); 241 } 242 } 243 244 static int 245 re_miibus_readreg(device_t dev, int phy, int reg) 246 { 247 struct rtk_softc *sc = device_private(dev); 248 uint16_t rval = 0; 249 uint16_t re8139_reg = 0; 250 int s; 251 252 s = splnet(); 253 254 if ((sc->sc_quirk & RTKQ_8139CPLUS) == 0) { 255 rval = re_gmii_readreg(dev, phy, reg); 256 splx(s); 257 return rval; 258 } 259 260 /* Pretend the internal PHY is only at address 0 */ 261 if (phy) { 262 splx(s); 263 return 0; 264 } 265 switch (reg) { 266 case MII_BMCR: 267 re8139_reg = RTK_BMCR; 268 break; 269 case MII_BMSR: 270 re8139_reg = RTK_BMSR; 271 break; 272 case MII_ANAR: 273 re8139_reg = RTK_ANAR; 274 break; 275 case MII_ANER: 276 re8139_reg = RTK_ANER; 277 break; 278 case MII_ANLPAR: 279 re8139_reg = RTK_LPAR; 280 break; 281 case MII_PHYIDR1: 282 case MII_PHYIDR2: 283 splx(s); 284 return 0; 285 /* 286 * Allow the rlphy driver to read the media status 287 * register. If we have a link partner which does not 288 * support NWAY, this is the register which will tell 289 * us the results of parallel detection. 290 */ 291 case RTK_MEDIASTAT: 292 rval = CSR_READ_1(sc, RTK_MEDIASTAT); 293 splx(s); 294 return rval; 295 default: 296 printf("%s: bad phy register\n", device_xname(sc->sc_dev)); 297 splx(s); 298 return 0; 299 } 300 rval = CSR_READ_2(sc, re8139_reg); 301 if ((sc->sc_quirk & RTKQ_8139CPLUS) != 0 && re8139_reg == RTK_BMCR) { 302 /* 8139C+ has different bit layout. */ 303 rval &= ~(BMCR_LOOP | BMCR_ISO); 304 } 305 splx(s); 306 return rval; 307 } 308 309 static void 310 re_miibus_writereg(device_t dev, int phy, int reg, int data) 311 { 312 struct rtk_softc *sc = device_private(dev); 313 uint16_t re8139_reg = 0; 314 int s; 315 316 s = splnet(); 317 318 if ((sc->sc_quirk & RTKQ_8139CPLUS) == 0) { 319 re_gmii_writereg(dev, phy, reg, data); 320 splx(s); 321 return; 322 } 323 324 /* Pretend the internal PHY is only at address 0 */ 325 if (phy) { 326 splx(s); 327 return; 328 } 329 switch (reg) { 330 case MII_BMCR: 331 re8139_reg = RTK_BMCR; 332 if ((sc->sc_quirk & RTKQ_8139CPLUS) != 0) { 333 /* 8139C+ has different bit layout. */ 334 data &= ~(BMCR_LOOP | BMCR_ISO); 335 } 336 break; 337 case MII_BMSR: 338 re8139_reg = RTK_BMSR; 339 break; 340 case MII_ANAR: 341 re8139_reg = RTK_ANAR; 342 break; 343 case MII_ANER: 344 re8139_reg = RTK_ANER; 345 break; 346 case MII_ANLPAR: 347 re8139_reg = RTK_LPAR; 348 break; 349 case MII_PHYIDR1: 350 case MII_PHYIDR2: 351 splx(s); 352 return; 353 break; 354 default: 355 printf("%s: bad phy register\n", device_xname(sc->sc_dev)); 356 splx(s); 357 return; 358 } 359 CSR_WRITE_2(sc, re8139_reg, data); 360 splx(s); 361 return; 362 } 363 364 static void 365 re_miibus_statchg(device_t dev) 366 { 367 368 return; 369 } 370 371 static void 372 re_reset(struct rtk_softc *sc) 373 { 374 int i; 375 376 CSR_WRITE_1(sc, RTK_COMMAND, RTK_CMD_RESET); 377 378 for (i = 0; i < RTK_TIMEOUT; i++) { 379 DELAY(10); 380 if ((CSR_READ_1(sc, RTK_COMMAND) & RTK_CMD_RESET) == 0) 381 break; 382 } 383 if (i == RTK_TIMEOUT) 384 printf("%s: reset never completed!\n", 385 device_xname(sc->sc_dev)); 386 387 /* 388 * NB: Realtek-supplied FreeBSD driver does this only for MACFG_3, 389 * but also says "Rtl8169s sigle chip detected". 390 */ 391 if ((sc->sc_quirk & RTKQ_MACLDPS) != 0) 392 CSR_WRITE_1(sc, RTK_LDPS, 1); 393 394 } 395 396 /* 397 * The following routine is designed to test for a defect on some 398 * 32-bit 8169 cards. Some of these NICs have the REQ64# and ACK64# 399 * lines connected to the bus, however for a 32-bit only card, they 400 * should be pulled high. The result of this defect is that the 401 * NIC will not work right if you plug it into a 64-bit slot: DMA 402 * operations will be done with 64-bit transfers, which will fail 403 * because the 64-bit data lines aren't connected. 404 * 405 * There's no way to work around this (short of talking a soldering 406 * iron to the board), however we can detect it. The method we use 407 * here is to put the NIC into digital loopback mode, set the receiver 408 * to promiscuous mode, and then try to send a frame. We then compare 409 * the frame data we sent to what was received. If the data matches, 410 * then the NIC is working correctly, otherwise we know the user has 411 * a defective NIC which has been mistakenly plugged into a 64-bit PCI 412 * slot. In the latter case, there's no way the NIC can work correctly, 413 * so we print out a message on the console and abort the device attach. 414 */ 415 416 int 417 re_diag(struct rtk_softc *sc) 418 { 419 struct ifnet *ifp = &sc->ethercom.ec_if; 420 struct mbuf *m0; 421 struct ether_header *eh; 422 struct re_rxsoft *rxs; 423 struct re_desc *cur_rx; 424 bus_dmamap_t dmamap; 425 uint16_t status; 426 uint32_t rxstat; 427 int total_len, i, s, error = 0; 428 static const uint8_t dst[] = { 0x00, 'h', 'e', 'l', 'l', 'o' }; 429 static const uint8_t src[] = { 0x00, 'w', 'o', 'r', 'l', 'd' }; 430 431 /* Allocate a single mbuf */ 432 433 MGETHDR(m0, M_DONTWAIT, MT_DATA); 434 if (m0 == NULL) 435 return ENOBUFS; 436 437 /* 438 * Initialize the NIC in test mode. This sets the chip up 439 * so that it can send and receive frames, but performs the 440 * following special functions: 441 * - Puts receiver in promiscuous mode 442 * - Enables digital loopback mode 443 * - Leaves interrupts turned off 444 */ 445 446 ifp->if_flags |= IFF_PROMISC; 447 sc->re_testmode = 1; 448 re_init(ifp); 449 re_stop(ifp, 0); 450 DELAY(100000); 451 re_init(ifp); 452 453 /* Put some data in the mbuf */ 454 455 eh = mtod(m0, struct ether_header *); 456 memcpy(eh->ether_dhost, (char *)&dst, ETHER_ADDR_LEN); 457 memcpy(eh->ether_shost, (char *)&src, ETHER_ADDR_LEN); 458 eh->ether_type = htons(ETHERTYPE_IP); 459 m0->m_pkthdr.len = m0->m_len = ETHER_MIN_LEN - ETHER_CRC_LEN; 460 461 /* 462 * Queue the packet, start transmission. 463 */ 464 465 CSR_WRITE_2(sc, RTK_ISR, 0xFFFF); 466 s = splnet(); 467 IF_ENQUEUE(&ifp->if_snd, m0); 468 re_start(ifp); 469 splx(s); 470 m0 = NULL; 471 472 /* Wait for it to propagate through the chip */ 473 474 DELAY(100000); 475 for (i = 0; i < RTK_TIMEOUT; i++) { 476 status = CSR_READ_2(sc, RTK_ISR); 477 if ((status & (RTK_ISR_TIMEOUT_EXPIRED | RTK_ISR_RX_OK)) == 478 (RTK_ISR_TIMEOUT_EXPIRED | RTK_ISR_RX_OK)) 479 break; 480 DELAY(10); 481 } 482 if (i == RTK_TIMEOUT) { 483 aprint_error_dev(sc->sc_dev, 484 "diagnostic failed, failed to receive packet " 485 "in loopback mode\n"); 486 error = EIO; 487 goto done; 488 } 489 490 /* 491 * The packet should have been dumped into the first 492 * entry in the RX DMA ring. Grab it from there. 493 */ 494 495 rxs = &sc->re_ldata.re_rxsoft[0]; 496 dmamap = rxs->rxs_dmamap; 497 bus_dmamap_sync(sc->sc_dmat, dmamap, 0, dmamap->dm_mapsize, 498 BUS_DMASYNC_POSTREAD); 499 bus_dmamap_unload(sc->sc_dmat, dmamap); 500 501 m0 = rxs->rxs_mbuf; 502 rxs->rxs_mbuf = NULL; 503 eh = mtod(m0, struct ether_header *); 504 505 RE_RXDESCSYNC(sc, 0, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 506 cur_rx = &sc->re_ldata.re_rx_list[0]; 507 rxstat = le32toh(cur_rx->re_cmdstat); 508 total_len = rxstat & sc->re_rxlenmask; 509 510 if (total_len != ETHER_MIN_LEN) { 511 aprint_error_dev(sc->sc_dev, 512 "diagnostic failed, received short packet\n"); 513 error = EIO; 514 goto done; 515 } 516 517 /* Test that the received packet data matches what we sent. */ 518 519 if (memcmp((char *)&eh->ether_dhost, (char *)&dst, ETHER_ADDR_LEN) || 520 memcmp((char *)&eh->ether_shost, (char *)&src, ETHER_ADDR_LEN) || 521 ntohs(eh->ether_type) != ETHERTYPE_IP) { 522 aprint_error_dev(sc->sc_dev, "WARNING, DMA FAILURE!\n" 523 "expected TX data: %s/%s/0x%x\n" 524 "received RX data: %s/%s/0x%x\n" 525 "You may have a defective 32-bit NIC plugged " 526 "into a 64-bit PCI slot.\n" 527 "Please re-install the NIC in a 32-bit slot " 528 "for proper operation.\n" 529 "Read the re(4) man page for more details.\n" , 530 ether_sprintf(dst), ether_sprintf(src), ETHERTYPE_IP, 531 ether_sprintf(eh->ether_dhost), 532 ether_sprintf(eh->ether_shost), ntohs(eh->ether_type)); 533 error = EIO; 534 } 535 536 done: 537 /* Turn interface off, release resources */ 538 539 sc->re_testmode = 0; 540 ifp->if_flags &= ~IFF_PROMISC; 541 re_stop(ifp, 0); 542 if (m0 != NULL) 543 m_freem(m0); 544 545 return error; 546 } 547 548 549 /* 550 * Attach the interface. Allocate softc structures, do ifmedia 551 * setup and ethernet/BPF attach. 552 */ 553 void 554 re_attach(struct rtk_softc *sc) 555 { 556 uint8_t eaddr[ETHER_ADDR_LEN]; 557 uint16_t val; 558 struct ifnet *ifp; 559 int error = 0, i, addr_len; 560 561 if ((sc->sc_quirk & RTKQ_8139CPLUS) == 0) { 562 uint32_t hwrev; 563 564 /* Revision of 8169/8169S/8110s in bits 30..26, 23 */ 565 hwrev = CSR_READ_4(sc, RTK_TXCFG) & RTK_TXCFG_HWREV; 566 switch (hwrev) { 567 case RTK_HWREV_8169: 568 sc->sc_quirk |= RTKQ_8169NONS; 569 break; 570 case RTK_HWREV_8169S: 571 case RTK_HWREV_8110S: 572 case RTK_HWREV_8169_8110SB: 573 case RTK_HWREV_8169_8110SC: 574 sc->sc_quirk |= RTKQ_MACLDPS; 575 break; 576 case RTK_HWREV_8168_SPIN1: 577 case RTK_HWREV_8168_SPIN2: 578 case RTK_HWREV_8168_SPIN3: 579 sc->sc_quirk |= RTKQ_MACSTAT; 580 break; 581 case RTK_HWREV_8168C: 582 case RTK_HWREV_8168C_SPIN2: 583 case RTK_HWREV_8168CP: 584 case RTK_HWREV_8168D: 585 case RTK_HWREV_8168DP: 586 sc->sc_quirk |= RTKQ_DESCV2 | RTKQ_NOEECMD | 587 RTKQ_MACSTAT | RTKQ_CMDSTOP; 588 /* 589 * From FreeBSD driver: 590 * 591 * These (8168/8111) controllers support jumbo frame 592 * but it seems that enabling it requires touching 593 * additional magic registers. Depending on MAC 594 * revisions some controllers need to disable 595 * checksum offload. So disable jumbo frame until 596 * I have better idea what it really requires to 597 * make it support. 598 * RTL8168C/CP : supports up to 6KB jumbo frame. 599 * RTL8111C/CP : supports up to 9KB jumbo frame. 600 */ 601 sc->sc_quirk |= RTKQ_NOJUMBO; 602 break; 603 case RTK_HWREV_8100E: 604 case RTK_HWREV_8100E_SPIN2: 605 case RTK_HWREV_8101E: 606 sc->sc_quirk |= RTKQ_NOJUMBO; 607 break; 608 case RTK_HWREV_8102E: 609 case RTK_HWREV_8102EL: 610 case RTK_HWREV_8103E: 611 sc->sc_quirk |= RTKQ_DESCV2 | RTKQ_NOEECMD | 612 RTKQ_MACSTAT | RTKQ_CMDSTOP | RTKQ_NOJUMBO; 613 break; 614 default: 615 aprint_normal_dev(sc->sc_dev, 616 "Unknown revision (0x%08x)\n", hwrev); 617 /* assume the latest features */ 618 sc->sc_quirk |= RTKQ_DESCV2 | RTKQ_NOEECMD; 619 sc->sc_quirk |= RTKQ_NOJUMBO; 620 } 621 622 /* Set RX length mask */ 623 sc->re_rxlenmask = RE_RDESC_STAT_GFRAGLEN; 624 sc->re_ldata.re_tx_desc_cnt = RE_TX_DESC_CNT_8169; 625 } else { 626 sc->sc_quirk |= RTKQ_NOJUMBO; 627 628 /* Set RX length mask */ 629 sc->re_rxlenmask = RE_RDESC_STAT_FRAGLEN; 630 sc->re_ldata.re_tx_desc_cnt = RE_TX_DESC_CNT_8139; 631 } 632 633 /* Reset the adapter. */ 634 re_reset(sc); 635 636 if ((sc->sc_quirk & RTKQ_NOEECMD) != 0) { 637 /* 638 * Get station address from ID registers. 639 */ 640 for (i = 0; i < ETHER_ADDR_LEN; i++) 641 eaddr[i] = CSR_READ_1(sc, RTK_IDR0 + i); 642 } else { 643 /* 644 * Get station address from the EEPROM. 645 */ 646 if (rtk_read_eeprom(sc, RTK_EE_ID, RTK_EEADDR_LEN1) == 0x8129) 647 addr_len = RTK_EEADDR_LEN1; 648 else 649 addr_len = RTK_EEADDR_LEN0; 650 651 /* 652 * Get station address from the EEPROM. 653 */ 654 for (i = 0; i < ETHER_ADDR_LEN / 2; i++) { 655 val = rtk_read_eeprom(sc, RTK_EE_EADDR0 + i, addr_len); 656 eaddr[(i * 2) + 0] = val & 0xff; 657 eaddr[(i * 2) + 1] = val >> 8; 658 } 659 } 660 661 aprint_normal_dev(sc->sc_dev, "Ethernet address %s\n", 662 ether_sprintf(eaddr)); 663 664 if (sc->re_ldata.re_tx_desc_cnt > 665 PAGE_SIZE / sizeof(struct re_desc)) { 666 sc->re_ldata.re_tx_desc_cnt = 667 PAGE_SIZE / sizeof(struct re_desc); 668 } 669 670 aprint_verbose_dev(sc->sc_dev, "using %d tx descriptors\n", 671 sc->re_ldata.re_tx_desc_cnt); 672 KASSERT(RE_NEXT_TX_DESC(sc, RE_TX_DESC_CNT(sc) - 1) == 0); 673 674 /* Allocate DMA'able memory for the TX ring */ 675 if ((error = bus_dmamem_alloc(sc->sc_dmat, RE_TX_LIST_SZ(sc), 676 RE_RING_ALIGN, 0, &sc->re_ldata.re_tx_listseg, 1, 677 &sc->re_ldata.re_tx_listnseg, BUS_DMA_NOWAIT)) != 0) { 678 aprint_error_dev(sc->sc_dev, 679 "can't allocate tx listseg, error = %d\n", error); 680 goto fail_0; 681 } 682 683 /* Load the map for the TX ring. */ 684 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->re_ldata.re_tx_listseg, 685 sc->re_ldata.re_tx_listnseg, RE_TX_LIST_SZ(sc), 686 (void **)&sc->re_ldata.re_tx_list, 687 BUS_DMA_COHERENT | BUS_DMA_NOWAIT)) != 0) { 688 aprint_error_dev(sc->sc_dev, 689 "can't map tx list, error = %d\n", error); 690 goto fail_1; 691 } 692 memset(sc->re_ldata.re_tx_list, 0, RE_TX_LIST_SZ(sc)); 693 694 if ((error = bus_dmamap_create(sc->sc_dmat, RE_TX_LIST_SZ(sc), 1, 695 RE_TX_LIST_SZ(sc), 0, 0, 696 &sc->re_ldata.re_tx_list_map)) != 0) { 697 aprint_error_dev(sc->sc_dev, 698 "can't create tx list map, error = %d\n", error); 699 goto fail_2; 700 } 701 702 703 if ((error = bus_dmamap_load(sc->sc_dmat, 704 sc->re_ldata.re_tx_list_map, sc->re_ldata.re_tx_list, 705 RE_TX_LIST_SZ(sc), NULL, BUS_DMA_NOWAIT)) != 0) { 706 aprint_error_dev(sc->sc_dev, 707 "can't load tx list, error = %d\n", error); 708 goto fail_3; 709 } 710 711 /* Create DMA maps for TX buffers */ 712 for (i = 0; i < RE_TX_QLEN; i++) { 713 error = bus_dmamap_create(sc->sc_dmat, 714 round_page(IP_MAXPACKET), 715 RE_TX_DESC_CNT(sc), RE_TDESC_CMD_FRAGLEN, 716 0, 0, &sc->re_ldata.re_txq[i].txq_dmamap); 717 if (error) { 718 aprint_error_dev(sc->sc_dev, 719 "can't create DMA map for TX\n"); 720 goto fail_4; 721 } 722 } 723 724 /* Allocate DMA'able memory for the RX ring */ 725 /* XXX see also a comment about RE_RX_DMAMEM_SZ in rtl81x9var.h */ 726 if ((error = bus_dmamem_alloc(sc->sc_dmat, 727 RE_RX_DMAMEM_SZ, RE_RING_ALIGN, 0, &sc->re_ldata.re_rx_listseg, 1, 728 &sc->re_ldata.re_rx_listnseg, BUS_DMA_NOWAIT)) != 0) { 729 aprint_error_dev(sc->sc_dev, 730 "can't allocate rx listseg, error = %d\n", error); 731 goto fail_4; 732 } 733 734 /* Load the map for the RX ring. */ 735 if ((error = bus_dmamem_map(sc->sc_dmat, &sc->re_ldata.re_rx_listseg, 736 sc->re_ldata.re_rx_listnseg, RE_RX_DMAMEM_SZ, 737 (void **)&sc->re_ldata.re_rx_list, 738 BUS_DMA_COHERENT | BUS_DMA_NOWAIT)) != 0) { 739 aprint_error_dev(sc->sc_dev, 740 "can't map rx list, error = %d\n", error); 741 goto fail_5; 742 } 743 memset(sc->re_ldata.re_rx_list, 0, RE_RX_DMAMEM_SZ); 744 745 if ((error = bus_dmamap_create(sc->sc_dmat, 746 RE_RX_DMAMEM_SZ, 1, RE_RX_DMAMEM_SZ, 0, 0, 747 &sc->re_ldata.re_rx_list_map)) != 0) { 748 aprint_error_dev(sc->sc_dev, 749 "can't create rx list map, error = %d\n", error); 750 goto fail_6; 751 } 752 753 if ((error = bus_dmamap_load(sc->sc_dmat, 754 sc->re_ldata.re_rx_list_map, sc->re_ldata.re_rx_list, 755 RE_RX_DMAMEM_SZ, NULL, BUS_DMA_NOWAIT)) != 0) { 756 aprint_error_dev(sc->sc_dev, 757 "can't load rx list, error = %d\n", error); 758 goto fail_7; 759 } 760 761 /* Create DMA maps for RX buffers */ 762 for (i = 0; i < RE_RX_DESC_CNT; i++) { 763 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 764 0, 0, &sc->re_ldata.re_rxsoft[i].rxs_dmamap); 765 if (error) { 766 aprint_error_dev(sc->sc_dev, 767 "can't create DMA map for RX\n"); 768 goto fail_8; 769 } 770 } 771 772 /* 773 * Record interface as attached. From here, we should not fail. 774 */ 775 sc->sc_flags |= RTK_ATTACHED; 776 777 ifp = &sc->ethercom.ec_if; 778 ifp->if_softc = sc; 779 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 780 ifp->if_mtu = ETHERMTU; 781 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 782 ifp->if_ioctl = re_ioctl; 783 sc->ethercom.ec_capabilities |= 784 ETHERCAP_VLAN_MTU | ETHERCAP_VLAN_HWTAGGING; 785 ifp->if_start = re_start; 786 ifp->if_stop = re_stop; 787 788 /* 789 * IFCAP_CSUM_IPv4_Tx on re(4) is broken for small packets, 790 * so we have a workaround to handle the bug by padding 791 * such packets manually. 792 */ 793 ifp->if_capabilities |= 794 IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx | 795 IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx | 796 IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_UDPv4_Rx | 797 IFCAP_TSOv4; 798 799 /* 800 * XXX 801 * Still have no idea how to make TSO work on 8168C, 8168CP, 802 * 8102E, 8111C and 8111CP. 803 */ 804 if ((sc->sc_quirk & RTKQ_DESCV2) != 0) 805 ifp->if_capabilities &= ~IFCAP_TSOv4; 806 807 ifp->if_watchdog = re_watchdog; 808 ifp->if_init = re_init; 809 ifp->if_snd.ifq_maxlen = RE_IFQ_MAXLEN; 810 ifp->if_capenable = ifp->if_capabilities; 811 IFQ_SET_READY(&ifp->if_snd); 812 813 callout_init(&sc->rtk_tick_ch, 0); 814 815 /* Do MII setup */ 816 sc->mii.mii_ifp = ifp; 817 sc->mii.mii_readreg = re_miibus_readreg; 818 sc->mii.mii_writereg = re_miibus_writereg; 819 sc->mii.mii_statchg = re_miibus_statchg; 820 sc->ethercom.ec_mii = &sc->mii; 821 ifmedia_init(&sc->mii.mii_media, IFM_IMASK, ether_mediachange, 822 ether_mediastatus); 823 mii_attach(sc->sc_dev, &sc->mii, 0xffffffff, MII_PHY_ANY, 824 MII_OFFSET_ANY, 0); 825 ifmedia_set(&sc->mii.mii_media, IFM_ETHER | IFM_AUTO); 826 827 /* 828 * Call MI attach routine. 829 */ 830 if_attach(ifp); 831 ether_ifattach(ifp, eaddr); 832 833 if (pmf_device_register(sc->sc_dev, NULL, NULL)) 834 pmf_class_network_register(sc->sc_dev, ifp); 835 else 836 aprint_error_dev(sc->sc_dev, 837 "couldn't establish power handler\n"); 838 839 return; 840 841 fail_8: 842 /* Destroy DMA maps for RX buffers. */ 843 for (i = 0; i < RE_RX_DESC_CNT; i++) 844 if (sc->re_ldata.re_rxsoft[i].rxs_dmamap != NULL) 845 bus_dmamap_destroy(sc->sc_dmat, 846 sc->re_ldata.re_rxsoft[i].rxs_dmamap); 847 848 /* Free DMA'able memory for the RX ring. */ 849 bus_dmamap_unload(sc->sc_dmat, sc->re_ldata.re_rx_list_map); 850 fail_7: 851 bus_dmamap_destroy(sc->sc_dmat, sc->re_ldata.re_rx_list_map); 852 fail_6: 853 bus_dmamem_unmap(sc->sc_dmat, 854 (void *)sc->re_ldata.re_rx_list, RE_RX_DMAMEM_SZ); 855 fail_5: 856 bus_dmamem_free(sc->sc_dmat, 857 &sc->re_ldata.re_rx_listseg, sc->re_ldata.re_rx_listnseg); 858 859 fail_4: 860 /* Destroy DMA maps for TX buffers. */ 861 for (i = 0; i < RE_TX_QLEN; i++) 862 if (sc->re_ldata.re_txq[i].txq_dmamap != NULL) 863 bus_dmamap_destroy(sc->sc_dmat, 864 sc->re_ldata.re_txq[i].txq_dmamap); 865 866 /* Free DMA'able memory for the TX ring. */ 867 bus_dmamap_unload(sc->sc_dmat, sc->re_ldata.re_tx_list_map); 868 fail_3: 869 bus_dmamap_destroy(sc->sc_dmat, sc->re_ldata.re_tx_list_map); 870 fail_2: 871 bus_dmamem_unmap(sc->sc_dmat, 872 (void *)sc->re_ldata.re_tx_list, RE_TX_LIST_SZ(sc)); 873 fail_1: 874 bus_dmamem_free(sc->sc_dmat, 875 &sc->re_ldata.re_tx_listseg, sc->re_ldata.re_tx_listnseg); 876 fail_0: 877 return; 878 } 879 880 881 /* 882 * re_activate: 883 * Handle device activation/deactivation requests. 884 */ 885 int 886 re_activate(device_t self, enum devact act) 887 { 888 struct rtk_softc *sc = device_private(self); 889 890 switch (act) { 891 case DVACT_DEACTIVATE: 892 if_deactivate(&sc->ethercom.ec_if); 893 return 0; 894 default: 895 return EOPNOTSUPP; 896 } 897 } 898 899 /* 900 * re_detach: 901 * Detach a rtk interface. 902 */ 903 int 904 re_detach(struct rtk_softc *sc) 905 { 906 struct ifnet *ifp = &sc->ethercom.ec_if; 907 int i; 908 909 /* 910 * Succeed now if there isn't any work to do. 911 */ 912 if ((sc->sc_flags & RTK_ATTACHED) == 0) 913 return 0; 914 915 /* Unhook our tick handler. */ 916 callout_stop(&sc->rtk_tick_ch); 917 918 /* Detach all PHYs. */ 919 mii_detach(&sc->mii, MII_PHY_ANY, MII_OFFSET_ANY); 920 921 /* Delete all remaining media. */ 922 ifmedia_delete_instance(&sc->mii.mii_media, IFM_INST_ANY); 923 924 ether_ifdetach(ifp); 925 if_detach(ifp); 926 927 /* Destroy DMA maps for RX buffers. */ 928 for (i = 0; i < RE_RX_DESC_CNT; i++) 929 if (sc->re_ldata.re_rxsoft[i].rxs_dmamap != NULL) 930 bus_dmamap_destroy(sc->sc_dmat, 931 sc->re_ldata.re_rxsoft[i].rxs_dmamap); 932 933 /* Free DMA'able memory for the RX ring. */ 934 bus_dmamap_unload(sc->sc_dmat, sc->re_ldata.re_rx_list_map); 935 bus_dmamap_destroy(sc->sc_dmat, sc->re_ldata.re_rx_list_map); 936 bus_dmamem_unmap(sc->sc_dmat, 937 (void *)sc->re_ldata.re_rx_list, RE_RX_DMAMEM_SZ); 938 bus_dmamem_free(sc->sc_dmat, 939 &sc->re_ldata.re_rx_listseg, sc->re_ldata.re_rx_listnseg); 940 941 /* Destroy DMA maps for TX buffers. */ 942 for (i = 0; i < RE_TX_QLEN; i++) 943 if (sc->re_ldata.re_txq[i].txq_dmamap != NULL) 944 bus_dmamap_destroy(sc->sc_dmat, 945 sc->re_ldata.re_txq[i].txq_dmamap); 946 947 /* Free DMA'able memory for the TX ring. */ 948 bus_dmamap_unload(sc->sc_dmat, sc->re_ldata.re_tx_list_map); 949 bus_dmamap_destroy(sc->sc_dmat, sc->re_ldata.re_tx_list_map); 950 bus_dmamem_unmap(sc->sc_dmat, 951 (void *)sc->re_ldata.re_tx_list, RE_TX_LIST_SZ(sc)); 952 bus_dmamem_free(sc->sc_dmat, 953 &sc->re_ldata.re_tx_listseg, sc->re_ldata.re_tx_listnseg); 954 955 pmf_device_deregister(sc->sc_dev); 956 957 return 0; 958 } 959 960 /* 961 * re_enable: 962 * Enable the RTL81X9 chip. 963 */ 964 static int 965 re_enable(struct rtk_softc *sc) 966 { 967 968 if (RTK_IS_ENABLED(sc) == 0 && sc->sc_enable != NULL) { 969 if ((*sc->sc_enable)(sc) != 0) { 970 printf("%s: device enable failed\n", 971 device_xname(sc->sc_dev)); 972 return EIO; 973 } 974 sc->sc_flags |= RTK_ENABLED; 975 } 976 return 0; 977 } 978 979 /* 980 * re_disable: 981 * Disable the RTL81X9 chip. 982 */ 983 static void 984 re_disable(struct rtk_softc *sc) 985 { 986 987 if (RTK_IS_ENABLED(sc) && sc->sc_disable != NULL) { 988 (*sc->sc_disable)(sc); 989 sc->sc_flags &= ~RTK_ENABLED; 990 } 991 } 992 993 static int 994 re_newbuf(struct rtk_softc *sc, int idx, struct mbuf *m) 995 { 996 struct mbuf *n = NULL; 997 bus_dmamap_t map; 998 struct re_desc *d; 999 struct re_rxsoft *rxs; 1000 uint32_t cmdstat; 1001 int error; 1002 1003 if (m == NULL) { 1004 MGETHDR(n, M_DONTWAIT, MT_DATA); 1005 if (n == NULL) 1006 return ENOBUFS; 1007 1008 MCLGET(n, M_DONTWAIT); 1009 if ((n->m_flags & M_EXT) == 0) { 1010 m_freem(n); 1011 return ENOBUFS; 1012 } 1013 m = n; 1014 } else 1015 m->m_data = m->m_ext.ext_buf; 1016 1017 /* 1018 * Initialize mbuf length fields and fixup 1019 * alignment so that the frame payload is 1020 * longword aligned. 1021 */ 1022 m->m_len = m->m_pkthdr.len = MCLBYTES - RE_ETHER_ALIGN; 1023 m->m_data += RE_ETHER_ALIGN; 1024 1025 rxs = &sc->re_ldata.re_rxsoft[idx]; 1026 map = rxs->rxs_dmamap; 1027 error = bus_dmamap_load_mbuf(sc->sc_dmat, map, m, 1028 BUS_DMA_READ|BUS_DMA_NOWAIT); 1029 1030 if (error) 1031 goto out; 1032 1033 bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, 1034 BUS_DMASYNC_PREREAD); 1035 1036 d = &sc->re_ldata.re_rx_list[idx]; 1037 #ifdef DIAGNOSTIC 1038 RE_RXDESCSYNC(sc, idx, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1039 cmdstat = le32toh(d->re_cmdstat); 1040 RE_RXDESCSYNC(sc, idx, BUS_DMASYNC_PREREAD); 1041 if (cmdstat & RE_RDESC_STAT_OWN) { 1042 panic("%s: tried to map busy RX descriptor", 1043 device_xname(sc->sc_dev)); 1044 } 1045 #endif 1046 1047 rxs->rxs_mbuf = m; 1048 1049 d->re_vlanctl = 0; 1050 cmdstat = map->dm_segs[0].ds_len; 1051 if (idx == (RE_RX_DESC_CNT - 1)) 1052 cmdstat |= RE_RDESC_CMD_EOR; 1053 re_set_bufaddr(d, map->dm_segs[0].ds_addr); 1054 d->re_cmdstat = htole32(cmdstat); 1055 RE_RXDESCSYNC(sc, idx, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1056 cmdstat |= RE_RDESC_CMD_OWN; 1057 d->re_cmdstat = htole32(cmdstat); 1058 RE_RXDESCSYNC(sc, idx, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1059 1060 return 0; 1061 out: 1062 if (n != NULL) 1063 m_freem(n); 1064 return ENOMEM; 1065 } 1066 1067 static int 1068 re_tx_list_init(struct rtk_softc *sc) 1069 { 1070 int i; 1071 1072 memset(sc->re_ldata.re_tx_list, 0, RE_TX_LIST_SZ(sc)); 1073 for (i = 0; i < RE_TX_QLEN; i++) { 1074 sc->re_ldata.re_txq[i].txq_mbuf = NULL; 1075 } 1076 1077 bus_dmamap_sync(sc->sc_dmat, 1078 sc->re_ldata.re_tx_list_map, 0, 1079 sc->re_ldata.re_tx_list_map->dm_mapsize, 1080 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1081 sc->re_ldata.re_txq_prodidx = 0; 1082 sc->re_ldata.re_txq_considx = 0; 1083 sc->re_ldata.re_txq_free = RE_TX_QLEN; 1084 sc->re_ldata.re_tx_free = RE_TX_DESC_CNT(sc); 1085 sc->re_ldata.re_tx_nextfree = 0; 1086 1087 return 0; 1088 } 1089 1090 static int 1091 re_rx_list_init(struct rtk_softc *sc) 1092 { 1093 int i; 1094 1095 memset(sc->re_ldata.re_rx_list, 0, RE_RX_LIST_SZ); 1096 1097 for (i = 0; i < RE_RX_DESC_CNT; i++) { 1098 if (re_newbuf(sc, i, NULL) == ENOBUFS) 1099 return ENOBUFS; 1100 } 1101 1102 sc->re_ldata.re_rx_prodidx = 0; 1103 sc->re_head = sc->re_tail = NULL; 1104 1105 return 0; 1106 } 1107 1108 /* 1109 * RX handler for C+ and 8169. For the gigE chips, we support 1110 * the reception of jumbo frames that have been fragmented 1111 * across multiple 2K mbuf cluster buffers. 1112 */ 1113 static void 1114 re_rxeof(struct rtk_softc *sc) 1115 { 1116 struct mbuf *m; 1117 struct ifnet *ifp; 1118 int i, total_len; 1119 struct re_desc *cur_rx; 1120 struct re_rxsoft *rxs; 1121 uint32_t rxstat, rxvlan; 1122 1123 ifp = &sc->ethercom.ec_if; 1124 1125 for (i = sc->re_ldata.re_rx_prodidx;; i = RE_NEXT_RX_DESC(sc, i)) { 1126 cur_rx = &sc->re_ldata.re_rx_list[i]; 1127 RE_RXDESCSYNC(sc, i, 1128 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1129 rxstat = le32toh(cur_rx->re_cmdstat); 1130 rxvlan = le32toh(cur_rx->re_vlanctl); 1131 RE_RXDESCSYNC(sc, i, BUS_DMASYNC_PREREAD); 1132 if ((rxstat & RE_RDESC_STAT_OWN) != 0) { 1133 break; 1134 } 1135 total_len = rxstat & sc->re_rxlenmask; 1136 rxs = &sc->re_ldata.re_rxsoft[i]; 1137 m = rxs->rxs_mbuf; 1138 1139 /* Invalidate the RX mbuf and unload its map */ 1140 1141 bus_dmamap_sync(sc->sc_dmat, 1142 rxs->rxs_dmamap, 0, rxs->rxs_dmamap->dm_mapsize, 1143 BUS_DMASYNC_POSTREAD); 1144 bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); 1145 1146 if ((rxstat & RE_RDESC_STAT_EOF) == 0) { 1147 m->m_len = MCLBYTES - RE_ETHER_ALIGN; 1148 if (sc->re_head == NULL) 1149 sc->re_head = sc->re_tail = m; 1150 else { 1151 m->m_flags &= ~M_PKTHDR; 1152 sc->re_tail->m_next = m; 1153 sc->re_tail = m; 1154 } 1155 re_newbuf(sc, i, NULL); 1156 continue; 1157 } 1158 1159 /* 1160 * NOTE: for the 8139C+, the frame length field 1161 * is always 12 bits in size, but for the gigE chips, 1162 * it is 13 bits (since the max RX frame length is 16K). 1163 * Unfortunately, all 32 bits in the status word 1164 * were already used, so to make room for the extra 1165 * length bit, RealTek took out the 'frame alignment 1166 * error' bit and shifted the other status bits 1167 * over one slot. The OWN, EOR, FS and LS bits are 1168 * still in the same places. We have already extracted 1169 * the frame length and checked the OWN bit, so rather 1170 * than using an alternate bit mapping, we shift the 1171 * status bits one space to the right so we can evaluate 1172 * them using the 8169 status as though it was in the 1173 * same format as that of the 8139C+. 1174 */ 1175 if ((sc->sc_quirk & RTKQ_8139CPLUS) == 0) 1176 rxstat >>= 1; 1177 1178 if (__predict_false((rxstat & RE_RDESC_STAT_RXERRSUM) != 0)) { 1179 #ifdef RE_DEBUG 1180 printf("%s: RX error (rxstat = 0x%08x)", 1181 device_xname(sc->sc_dev), rxstat); 1182 if (rxstat & RE_RDESC_STAT_FRALIGN) 1183 printf(", frame alignment error"); 1184 if (rxstat & RE_RDESC_STAT_BUFOFLOW) 1185 printf(", out of buffer space"); 1186 if (rxstat & RE_RDESC_STAT_FIFOOFLOW) 1187 printf(", FIFO overrun"); 1188 if (rxstat & RE_RDESC_STAT_GIANT) 1189 printf(", giant packet"); 1190 if (rxstat & RE_RDESC_STAT_RUNT) 1191 printf(", runt packet"); 1192 if (rxstat & RE_RDESC_STAT_CRCERR) 1193 printf(", CRC error"); 1194 printf("\n"); 1195 #endif 1196 ifp->if_ierrors++; 1197 /* 1198 * If this is part of a multi-fragment packet, 1199 * discard all the pieces. 1200 */ 1201 if (sc->re_head != NULL) { 1202 m_freem(sc->re_head); 1203 sc->re_head = sc->re_tail = NULL; 1204 } 1205 re_newbuf(sc, i, m); 1206 continue; 1207 } 1208 1209 /* 1210 * If allocating a replacement mbuf fails, 1211 * reload the current one. 1212 */ 1213 1214 if (__predict_false(re_newbuf(sc, i, NULL) != 0)) { 1215 ifp->if_ierrors++; 1216 if (sc->re_head != NULL) { 1217 m_freem(sc->re_head); 1218 sc->re_head = sc->re_tail = NULL; 1219 } 1220 re_newbuf(sc, i, m); 1221 continue; 1222 } 1223 1224 if (sc->re_head != NULL) { 1225 m->m_len = total_len % (MCLBYTES - RE_ETHER_ALIGN); 1226 /* 1227 * Special case: if there's 4 bytes or less 1228 * in this buffer, the mbuf can be discarded: 1229 * the last 4 bytes is the CRC, which we don't 1230 * care about anyway. 1231 */ 1232 if (m->m_len <= ETHER_CRC_LEN) { 1233 sc->re_tail->m_len -= 1234 (ETHER_CRC_LEN - m->m_len); 1235 m_freem(m); 1236 } else { 1237 m->m_len -= ETHER_CRC_LEN; 1238 m->m_flags &= ~M_PKTHDR; 1239 sc->re_tail->m_next = m; 1240 } 1241 m = sc->re_head; 1242 sc->re_head = sc->re_tail = NULL; 1243 m->m_pkthdr.len = total_len - ETHER_CRC_LEN; 1244 } else 1245 m->m_pkthdr.len = m->m_len = 1246 (total_len - ETHER_CRC_LEN); 1247 1248 ifp->if_ipackets++; 1249 m->m_pkthdr.rcvif = ifp; 1250 1251 /* Do RX checksumming */ 1252 if ((sc->sc_quirk & RTKQ_DESCV2) == 0) { 1253 /* Check IP header checksum */ 1254 if ((rxstat & RE_RDESC_STAT_PROTOID) != 0) { 1255 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 1256 if (rxstat & RE_RDESC_STAT_IPSUMBAD) 1257 m->m_pkthdr.csum_flags |= 1258 M_CSUM_IPv4_BAD; 1259 1260 /* Check TCP/UDP checksum */ 1261 if (RE_TCPPKT(rxstat)) { 1262 m->m_pkthdr.csum_flags |= M_CSUM_TCPv4; 1263 if (rxstat & RE_RDESC_STAT_TCPSUMBAD) 1264 m->m_pkthdr.csum_flags |= 1265 M_CSUM_TCP_UDP_BAD; 1266 } else if (RE_UDPPKT(rxstat)) { 1267 m->m_pkthdr.csum_flags |= M_CSUM_UDPv4; 1268 if (rxstat & RE_RDESC_STAT_UDPSUMBAD) 1269 m->m_pkthdr.csum_flags |= 1270 M_CSUM_TCP_UDP_BAD; 1271 } 1272 } 1273 } else { 1274 /* Check IPv4 header checksum */ 1275 if ((rxvlan & RE_RDESC_VLANCTL_IPV4) != 0) { 1276 m->m_pkthdr.csum_flags |= M_CSUM_IPv4; 1277 if (rxstat & RE_RDESC_STAT_IPSUMBAD) 1278 m->m_pkthdr.csum_flags |= 1279 M_CSUM_IPv4_BAD; 1280 1281 /* Check TCPv4/UDPv4 checksum */ 1282 if (RE_TCPPKT(rxstat)) { 1283 m->m_pkthdr.csum_flags |= M_CSUM_TCPv4; 1284 if (rxstat & RE_RDESC_STAT_TCPSUMBAD) 1285 m->m_pkthdr.csum_flags |= 1286 M_CSUM_TCP_UDP_BAD; 1287 } else if (RE_UDPPKT(rxstat)) { 1288 m->m_pkthdr.csum_flags |= M_CSUM_UDPv4; 1289 if (rxstat & RE_RDESC_STAT_UDPSUMBAD) 1290 m->m_pkthdr.csum_flags |= 1291 M_CSUM_TCP_UDP_BAD; 1292 } 1293 } 1294 /* XXX Check TCPv6/UDPv6 checksum? */ 1295 } 1296 1297 if (rxvlan & RE_RDESC_VLANCTL_TAG) { 1298 VLAN_INPUT_TAG(ifp, m, 1299 bswap16(rxvlan & RE_RDESC_VLANCTL_DATA), 1300 continue); 1301 } 1302 if (ifp->if_bpf) 1303 bpf_ops->bpf_mtap(ifp->if_bpf, m); 1304 (*ifp->if_input)(ifp, m); 1305 } 1306 1307 sc->re_ldata.re_rx_prodidx = i; 1308 } 1309 1310 static void 1311 re_txeof(struct rtk_softc *sc) 1312 { 1313 struct ifnet *ifp; 1314 struct re_txq *txq; 1315 uint32_t txstat; 1316 int idx, descidx; 1317 1318 ifp = &sc->ethercom.ec_if; 1319 1320 for (idx = sc->re_ldata.re_txq_considx; 1321 sc->re_ldata.re_txq_free < RE_TX_QLEN; 1322 idx = RE_NEXT_TXQ(sc, idx), sc->re_ldata.re_txq_free++) { 1323 txq = &sc->re_ldata.re_txq[idx]; 1324 KASSERT(txq->txq_mbuf != NULL); 1325 1326 descidx = txq->txq_descidx; 1327 RE_TXDESCSYNC(sc, descidx, 1328 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1329 txstat = 1330 le32toh(sc->re_ldata.re_tx_list[descidx].re_cmdstat); 1331 RE_TXDESCSYNC(sc, descidx, BUS_DMASYNC_PREREAD); 1332 KASSERT((txstat & RE_TDESC_CMD_EOF) != 0); 1333 if (txstat & RE_TDESC_CMD_OWN) { 1334 break; 1335 } 1336 1337 sc->re_ldata.re_tx_free += txq->txq_nsegs; 1338 KASSERT(sc->re_ldata.re_tx_free <= RE_TX_DESC_CNT(sc)); 1339 bus_dmamap_sync(sc->sc_dmat, txq->txq_dmamap, 1340 0, txq->txq_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1341 bus_dmamap_unload(sc->sc_dmat, txq->txq_dmamap); 1342 m_freem(txq->txq_mbuf); 1343 txq->txq_mbuf = NULL; 1344 1345 if (txstat & (RE_TDESC_STAT_EXCESSCOL | RE_TDESC_STAT_COLCNT)) 1346 ifp->if_collisions++; 1347 if (txstat & RE_TDESC_STAT_TXERRSUM) 1348 ifp->if_oerrors++; 1349 else 1350 ifp->if_opackets++; 1351 } 1352 1353 sc->re_ldata.re_txq_considx = idx; 1354 1355 if (sc->re_ldata.re_txq_free > RE_NTXDESC_RSVD) 1356 ifp->if_flags &= ~IFF_OACTIVE; 1357 1358 /* 1359 * If not all descriptors have been released reaped yet, 1360 * reload the timer so that we will eventually get another 1361 * interrupt that will cause us to re-enter this routine. 1362 * This is done in case the transmitter has gone idle. 1363 */ 1364 if (sc->re_ldata.re_txq_free < RE_TX_QLEN) { 1365 CSR_WRITE_4(sc, RTK_TIMERCNT, 1); 1366 if ((sc->sc_quirk & RTKQ_PCIE) != 0) { 1367 /* 1368 * Some chips will ignore a second TX request 1369 * issued while an existing transmission is in 1370 * progress. If the transmitter goes idle but 1371 * there are still packets waiting to be sent, 1372 * we need to restart the channel here to flush 1373 * them out. This only seems to be required with 1374 * the PCIe devices. 1375 */ 1376 CSR_WRITE_1(sc, RTK_GTXSTART, RTK_TXSTART_START); 1377 } 1378 } else 1379 ifp->if_timer = 0; 1380 } 1381 1382 static void 1383 re_tick(void *arg) 1384 { 1385 struct rtk_softc *sc = arg; 1386 int s; 1387 1388 /* XXX: just return for 8169S/8110S with rev 2 or newer phy */ 1389 s = splnet(); 1390 1391 mii_tick(&sc->mii); 1392 splx(s); 1393 1394 callout_reset(&sc->rtk_tick_ch, hz, re_tick, sc); 1395 } 1396 1397 int 1398 re_intr(void *arg) 1399 { 1400 struct rtk_softc *sc = arg; 1401 struct ifnet *ifp; 1402 uint16_t status; 1403 int handled = 0; 1404 1405 if (!device_has_power(sc->sc_dev)) 1406 return 0; 1407 1408 ifp = &sc->ethercom.ec_if; 1409 1410 if ((ifp->if_flags & IFF_UP) == 0) 1411 return 0; 1412 1413 for (;;) { 1414 1415 status = CSR_READ_2(sc, RTK_ISR); 1416 /* If the card has gone away the read returns 0xffff. */ 1417 if (status == 0xffff) 1418 break; 1419 if (status) { 1420 handled = 1; 1421 CSR_WRITE_2(sc, RTK_ISR, status); 1422 } 1423 1424 if ((status & RTK_INTRS_CPLUS) == 0) 1425 break; 1426 1427 if (status & (RTK_ISR_RX_OK | RTK_ISR_RX_ERR)) 1428 re_rxeof(sc); 1429 1430 if (status & (RTK_ISR_TIMEOUT_EXPIRED | RTK_ISR_TX_ERR | 1431 RTK_ISR_TX_DESC_UNAVAIL)) 1432 re_txeof(sc); 1433 1434 if (status & RTK_ISR_SYSTEM_ERR) { 1435 re_init(ifp); 1436 } 1437 1438 if (status & RTK_ISR_LINKCHG) { 1439 callout_stop(&sc->rtk_tick_ch); 1440 re_tick(sc); 1441 } 1442 } 1443 1444 if (handled && !IFQ_IS_EMPTY(&ifp->if_snd)) 1445 re_start(ifp); 1446 1447 return handled; 1448 } 1449 1450 1451 1452 /* 1453 * Main transmit routine for C+ and gigE NICs. 1454 */ 1455 1456 static void 1457 re_start(struct ifnet *ifp) 1458 { 1459 struct rtk_softc *sc; 1460 struct mbuf *m; 1461 bus_dmamap_t map; 1462 struct re_txq *txq; 1463 struct re_desc *d; 1464 struct m_tag *mtag; 1465 uint32_t cmdstat, re_flags, vlanctl; 1466 int ofree, idx, error, nsegs, seg; 1467 int startdesc, curdesc, lastdesc; 1468 bool pad; 1469 1470 sc = ifp->if_softc; 1471 ofree = sc->re_ldata.re_txq_free; 1472 1473 for (idx = sc->re_ldata.re_txq_prodidx;; idx = RE_NEXT_TXQ(sc, idx)) { 1474 1475 IFQ_POLL(&ifp->if_snd, m); 1476 if (m == NULL) 1477 break; 1478 1479 if (sc->re_ldata.re_txq_free == 0 || 1480 sc->re_ldata.re_tx_free == 0) { 1481 /* no more free slots left */ 1482 ifp->if_flags |= IFF_OACTIVE; 1483 break; 1484 } 1485 1486 /* 1487 * Set up checksum offload. Note: checksum offload bits must 1488 * appear in all descriptors of a multi-descriptor transmit 1489 * attempt. (This is according to testing done with an 8169 1490 * chip. I'm not sure if this is a requirement or a bug.) 1491 */ 1492 1493 vlanctl = 0; 1494 if ((m->m_pkthdr.csum_flags & M_CSUM_TSOv4) != 0) { 1495 uint32_t segsz = m->m_pkthdr.segsz; 1496 1497 re_flags = RE_TDESC_CMD_LGSEND | 1498 (segsz << RE_TDESC_CMD_MSSVAL_SHIFT); 1499 } else { 1500 /* 1501 * set RE_TDESC_CMD_IPCSUM if any checksum offloading 1502 * is requested. otherwise, RE_TDESC_CMD_TCPCSUM/ 1503 * RE_TDESC_CMD_UDPCSUM doesn't make effects. 1504 */ 1505 re_flags = 0; 1506 if ((m->m_pkthdr.csum_flags & 1507 (M_CSUM_IPv4 | M_CSUM_TCPv4 | M_CSUM_UDPv4)) 1508 != 0) { 1509 if ((sc->sc_quirk & RTKQ_DESCV2) == 0) { 1510 re_flags |= RE_TDESC_CMD_IPCSUM; 1511 if (m->m_pkthdr.csum_flags & 1512 M_CSUM_TCPv4) { 1513 re_flags |= 1514 RE_TDESC_CMD_TCPCSUM; 1515 } else if (m->m_pkthdr.csum_flags & 1516 M_CSUM_UDPv4) { 1517 re_flags |= 1518 RE_TDESC_CMD_UDPCSUM; 1519 } 1520 } else { 1521 vlanctl |= RE_TDESC_VLANCTL_IPCSUM; 1522 if (m->m_pkthdr.csum_flags & 1523 M_CSUM_TCPv4) { 1524 vlanctl |= 1525 RE_TDESC_VLANCTL_TCPCSUM; 1526 } else if (m->m_pkthdr.csum_flags & 1527 M_CSUM_UDPv4) { 1528 vlanctl |= 1529 RE_TDESC_VLANCTL_UDPCSUM; 1530 } 1531 } 1532 } 1533 } 1534 1535 txq = &sc->re_ldata.re_txq[idx]; 1536 map = txq->txq_dmamap; 1537 error = bus_dmamap_load_mbuf(sc->sc_dmat, map, m, 1538 BUS_DMA_WRITE|BUS_DMA_NOWAIT); 1539 1540 if (__predict_false(error)) { 1541 /* XXX try to defrag if EFBIG? */ 1542 printf("%s: can't map mbuf (error %d)\n", 1543 device_xname(sc->sc_dev), error); 1544 1545 IFQ_DEQUEUE(&ifp->if_snd, m); 1546 m_freem(m); 1547 ifp->if_oerrors++; 1548 continue; 1549 } 1550 1551 nsegs = map->dm_nsegs; 1552 pad = false; 1553 if (__predict_false(m->m_pkthdr.len <= RE_IP4CSUMTX_PADLEN && 1554 (re_flags & RE_TDESC_CMD_IPCSUM) != 0 && 1555 (sc->sc_quirk & RTKQ_DESCV2) == 0)) { 1556 pad = true; 1557 nsegs++; 1558 } 1559 1560 if (nsegs > sc->re_ldata.re_tx_free) { 1561 /* 1562 * Not enough free descriptors to transmit this packet. 1563 */ 1564 ifp->if_flags |= IFF_OACTIVE; 1565 bus_dmamap_unload(sc->sc_dmat, map); 1566 break; 1567 } 1568 1569 IFQ_DEQUEUE(&ifp->if_snd, m); 1570 1571 /* 1572 * Make sure that the caches are synchronized before we 1573 * ask the chip to start DMA for the packet data. 1574 */ 1575 bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, 1576 BUS_DMASYNC_PREWRITE); 1577 1578 /* 1579 * Set up hardware VLAN tagging. Note: vlan tag info must 1580 * appear in all descriptors of a multi-descriptor 1581 * transmission attempt. 1582 */ 1583 if ((mtag = VLAN_OUTPUT_TAG(&sc->ethercom, m)) != NULL) 1584 vlanctl |= bswap16(VLAN_TAG_VALUE(mtag)) | 1585 RE_TDESC_VLANCTL_TAG; 1586 1587 /* 1588 * Map the segment array into descriptors. 1589 * Note that we set the start-of-frame and 1590 * end-of-frame markers for either TX or RX, 1591 * but they really only have meaning in the TX case. 1592 * (In the RX case, it's the chip that tells us 1593 * where packets begin and end.) 1594 * We also keep track of the end of the ring 1595 * and set the end-of-ring bits as needed, 1596 * and we set the ownership bits in all except 1597 * the very first descriptor. (The caller will 1598 * set this descriptor later when it start 1599 * transmission or reception.) 1600 */ 1601 curdesc = startdesc = sc->re_ldata.re_tx_nextfree; 1602 lastdesc = -1; 1603 for (seg = 0; seg < map->dm_nsegs; 1604 seg++, curdesc = RE_NEXT_TX_DESC(sc, curdesc)) { 1605 d = &sc->re_ldata.re_tx_list[curdesc]; 1606 #ifdef DIAGNOSTIC 1607 RE_TXDESCSYNC(sc, curdesc, 1608 BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); 1609 cmdstat = le32toh(d->re_cmdstat); 1610 RE_TXDESCSYNC(sc, curdesc, BUS_DMASYNC_PREREAD); 1611 if (cmdstat & RE_TDESC_STAT_OWN) { 1612 panic("%s: tried to map busy TX descriptor", 1613 device_xname(sc->sc_dev)); 1614 } 1615 #endif 1616 1617 d->re_vlanctl = htole32(vlanctl); 1618 re_set_bufaddr(d, map->dm_segs[seg].ds_addr); 1619 cmdstat = re_flags | map->dm_segs[seg].ds_len; 1620 if (seg == 0) 1621 cmdstat |= RE_TDESC_CMD_SOF; 1622 else 1623 cmdstat |= RE_TDESC_CMD_OWN; 1624 if (curdesc == (RE_TX_DESC_CNT(sc) - 1)) 1625 cmdstat |= RE_TDESC_CMD_EOR; 1626 if (seg == nsegs - 1) { 1627 cmdstat |= RE_TDESC_CMD_EOF; 1628 lastdesc = curdesc; 1629 } 1630 d->re_cmdstat = htole32(cmdstat); 1631 RE_TXDESCSYNC(sc, curdesc, 1632 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1633 } 1634 if (__predict_false(pad)) { 1635 d = &sc->re_ldata.re_tx_list[curdesc]; 1636 d->re_vlanctl = htole32(vlanctl); 1637 re_set_bufaddr(d, RE_TXPADDADDR(sc)); 1638 cmdstat = re_flags | 1639 RE_TDESC_CMD_OWN | RE_TDESC_CMD_EOF | 1640 (RE_IP4CSUMTX_PADLEN + 1 - m->m_pkthdr.len); 1641 if (curdesc == (RE_TX_DESC_CNT(sc) - 1)) 1642 cmdstat |= RE_TDESC_CMD_EOR; 1643 d->re_cmdstat = htole32(cmdstat); 1644 RE_TXDESCSYNC(sc, curdesc, 1645 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1646 lastdesc = curdesc; 1647 curdesc = RE_NEXT_TX_DESC(sc, curdesc); 1648 } 1649 KASSERT(lastdesc != -1); 1650 1651 /* Transfer ownership of packet to the chip. */ 1652 1653 sc->re_ldata.re_tx_list[startdesc].re_cmdstat |= 1654 htole32(RE_TDESC_CMD_OWN); 1655 RE_TXDESCSYNC(sc, startdesc, 1656 BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); 1657 1658 /* update info of TX queue and descriptors */ 1659 txq->txq_mbuf = m; 1660 txq->txq_descidx = lastdesc; 1661 txq->txq_nsegs = nsegs; 1662 1663 sc->re_ldata.re_txq_free--; 1664 sc->re_ldata.re_tx_free -= nsegs; 1665 sc->re_ldata.re_tx_nextfree = curdesc; 1666 1667 /* 1668 * If there's a BPF listener, bounce a copy of this frame 1669 * to him. 1670 */ 1671 if (ifp->if_bpf) 1672 bpf_ops->bpf_mtap(ifp->if_bpf, m); 1673 } 1674 1675 if (sc->re_ldata.re_txq_free < ofree) { 1676 /* 1677 * TX packets are enqueued. 1678 */ 1679 sc->re_ldata.re_txq_prodidx = idx; 1680 1681 /* 1682 * Start the transmitter to poll. 1683 * 1684 * RealTek put the TX poll request register in a different 1685 * location on the 8169 gigE chip. I don't know why. 1686 */ 1687 if ((sc->sc_quirk & RTKQ_8139CPLUS) != 0) 1688 CSR_WRITE_1(sc, RTK_TXSTART, RTK_TXSTART_START); 1689 else 1690 CSR_WRITE_1(sc, RTK_GTXSTART, RTK_TXSTART_START); 1691 1692 /* 1693 * Use the countdown timer for interrupt moderation. 1694 * 'TX done' interrupts are disabled. Instead, we reset the 1695 * countdown timer, which will begin counting until it hits 1696 * the value in the TIMERINT register, and then trigger an 1697 * interrupt. Each time we write to the TIMERCNT register, 1698 * the timer count is reset to 0. 1699 */ 1700 CSR_WRITE_4(sc, RTK_TIMERCNT, 1); 1701 1702 /* 1703 * Set a timeout in case the chip goes out to lunch. 1704 */ 1705 ifp->if_timer = 5; 1706 } 1707 } 1708 1709 static int 1710 re_init(struct ifnet *ifp) 1711 { 1712 struct rtk_softc *sc = ifp->if_softc; 1713 const uint8_t *enaddr; 1714 uint32_t rxcfg = 0; 1715 uint32_t reg; 1716 uint16_t cfg; 1717 int error; 1718 1719 if ((error = re_enable(sc)) != 0) 1720 goto out; 1721 1722 /* 1723 * Cancel pending I/O and free all RX/TX buffers. 1724 */ 1725 re_stop(ifp, 0); 1726 1727 re_reset(sc); 1728 1729 /* 1730 * Enable C+ RX and TX mode, as well as VLAN stripping and 1731 * RX checksum offload. We must configure the C+ register 1732 * before all others. 1733 */ 1734 cfg = RE_CPLUSCMD_PCI_MRW; 1735 1736 /* 1737 * XXX: For old 8169 set bit 14. 1738 * For 8169S/8110S and above, do not set bit 14. 1739 */ 1740 if ((sc->sc_quirk & RTKQ_8169NONS) != 0) 1741 cfg |= (0x1 << 14); 1742 1743 if ((ifp->if_capenable & ETHERCAP_VLAN_HWTAGGING) != 0) 1744 cfg |= RE_CPLUSCMD_VLANSTRIP; 1745 if ((ifp->if_capenable & (IFCAP_CSUM_IPv4_Rx | 1746 IFCAP_CSUM_TCPv4_Rx | IFCAP_CSUM_UDPv4_Rx)) != 0) 1747 cfg |= RE_CPLUSCMD_RXCSUM_ENB; 1748 if ((sc->sc_quirk & RTKQ_MACSTAT) != 0) { 1749 cfg |= RE_CPLUSCMD_MACSTAT_DIS; 1750 cfg |= RE_CPLUSCMD_TXENB; 1751 } else 1752 cfg |= RE_CPLUSCMD_RXENB | RE_CPLUSCMD_TXENB; 1753 1754 CSR_WRITE_2(sc, RTK_CPLUS_CMD, cfg); 1755 1756 /* XXX: from Realtek-supplied Linux driver. Wholly undocumented. */ 1757 if ((sc->sc_quirk & RTKQ_8139CPLUS) == 0) 1758 CSR_WRITE_2(sc, RTK_IM, 0x0000); 1759 1760 DELAY(10000); 1761 1762 /* 1763 * Init our MAC address. Even though the chipset 1764 * documentation doesn't mention it, we need to enter "Config 1765 * register write enable" mode to modify the ID registers. 1766 */ 1767 CSR_WRITE_1(sc, RTK_EECMD, RTK_EEMODE_WRITECFG); 1768 enaddr = CLLADDR(ifp->if_sadl); 1769 reg = enaddr[0] | (enaddr[1] << 8) | 1770 (enaddr[2] << 16) | (enaddr[3] << 24); 1771 CSR_WRITE_4(sc, RTK_IDR0, reg); 1772 reg = enaddr[4] | (enaddr[5] << 8); 1773 CSR_WRITE_4(sc, RTK_IDR4, reg); 1774 CSR_WRITE_1(sc, RTK_EECMD, RTK_EEMODE_OFF); 1775 1776 /* 1777 * For C+ mode, initialize the RX descriptors and mbufs. 1778 */ 1779 re_rx_list_init(sc); 1780 re_tx_list_init(sc); 1781 1782 /* 1783 * Load the addresses of the RX and TX lists into the chip. 1784 */ 1785 CSR_WRITE_4(sc, RTK_RXLIST_ADDR_HI, 1786 RE_ADDR_HI(sc->re_ldata.re_rx_list_map->dm_segs[0].ds_addr)); 1787 CSR_WRITE_4(sc, RTK_RXLIST_ADDR_LO, 1788 RE_ADDR_LO(sc->re_ldata.re_rx_list_map->dm_segs[0].ds_addr)); 1789 1790 CSR_WRITE_4(sc, RTK_TXLIST_ADDR_HI, 1791 RE_ADDR_HI(sc->re_ldata.re_tx_list_map->dm_segs[0].ds_addr)); 1792 CSR_WRITE_4(sc, RTK_TXLIST_ADDR_LO, 1793 RE_ADDR_LO(sc->re_ldata.re_tx_list_map->dm_segs[0].ds_addr)); 1794 1795 /* 1796 * Enable transmit and receive. 1797 */ 1798 CSR_WRITE_1(sc, RTK_COMMAND, RTK_CMD_TX_ENB | RTK_CMD_RX_ENB); 1799 1800 /* 1801 * Set the initial TX and RX configuration. 1802 */ 1803 if (sc->re_testmode && (sc->sc_quirk & RTKQ_8169NONS) != 0) { 1804 /* test mode is needed only for old 8169 */ 1805 CSR_WRITE_4(sc, RTK_TXCFG, 1806 RE_TXCFG_CONFIG | RTK_LOOPTEST_ON); 1807 } else 1808 CSR_WRITE_4(sc, RTK_TXCFG, RE_TXCFG_CONFIG); 1809 1810 CSR_WRITE_1(sc, RTK_EARLY_TX_THRESH, 16); 1811 1812 CSR_WRITE_4(sc, RTK_RXCFG, RE_RXCFG_CONFIG); 1813 1814 /* Set the individual bit to receive frames for this host only. */ 1815 rxcfg = CSR_READ_4(sc, RTK_RXCFG); 1816 rxcfg |= RTK_RXCFG_RX_INDIV; 1817 1818 /* If we want promiscuous mode, set the allframes bit. */ 1819 if (ifp->if_flags & IFF_PROMISC) 1820 rxcfg |= RTK_RXCFG_RX_ALLPHYS; 1821 else 1822 rxcfg &= ~RTK_RXCFG_RX_ALLPHYS; 1823 CSR_WRITE_4(sc, RTK_RXCFG, rxcfg); 1824 1825 /* 1826 * Set capture broadcast bit to capture broadcast frames. 1827 */ 1828 if (ifp->if_flags & IFF_BROADCAST) 1829 rxcfg |= RTK_RXCFG_RX_BROAD; 1830 else 1831 rxcfg &= ~RTK_RXCFG_RX_BROAD; 1832 CSR_WRITE_4(sc, RTK_RXCFG, rxcfg); 1833 1834 /* 1835 * Program the multicast filter, if necessary. 1836 */ 1837 rtk_setmulti(sc); 1838 1839 /* 1840 * Enable interrupts. 1841 */ 1842 if (sc->re_testmode) 1843 CSR_WRITE_2(sc, RTK_IMR, 0); 1844 else 1845 CSR_WRITE_2(sc, RTK_IMR, RTK_INTRS_CPLUS); 1846 1847 /* Start RX/TX process. */ 1848 CSR_WRITE_4(sc, RTK_MISSEDPKT, 0); 1849 #ifdef notdef 1850 /* Enable receiver and transmitter. */ 1851 CSR_WRITE_1(sc, RTK_COMMAND, RTK_CMD_TX_ENB | RTK_CMD_RX_ENB); 1852 #endif 1853 1854 /* 1855 * Initialize the timer interrupt register so that 1856 * a timer interrupt will be generated once the timer 1857 * reaches a certain number of ticks. The timer is 1858 * reloaded on each transmit. This gives us TX interrupt 1859 * moderation, which dramatically improves TX frame rate. 1860 */ 1861 1862 if ((sc->sc_quirk & RTKQ_8139CPLUS) != 0) 1863 CSR_WRITE_4(sc, RTK_TIMERINT, 0x400); 1864 else { 1865 CSR_WRITE_4(sc, RTK_TIMERINT_8169, 0x800); 1866 1867 /* 1868 * For 8169 gigE NICs, set the max allowed RX packet 1869 * size so we can receive jumbo frames. 1870 */ 1871 CSR_WRITE_2(sc, RTK_MAXRXPKTLEN, 16383); 1872 } 1873 1874 if (sc->re_testmode) 1875 return 0; 1876 1877 CSR_WRITE_1(sc, RTK_CFG1, RTK_CFG1_DRVLOAD); 1878 1879 ifp->if_flags |= IFF_RUNNING; 1880 ifp->if_flags &= ~IFF_OACTIVE; 1881 1882 callout_reset(&sc->rtk_tick_ch, hz, re_tick, sc); 1883 1884 out: 1885 if (error) { 1886 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 1887 ifp->if_timer = 0; 1888 printf("%s: interface not running\n", 1889 device_xname(sc->sc_dev)); 1890 } 1891 1892 return error; 1893 } 1894 1895 static int 1896 re_ioctl(struct ifnet *ifp, u_long command, void *data) 1897 { 1898 struct rtk_softc *sc = ifp->if_softc; 1899 struct ifreq *ifr = data; 1900 int s, error = 0; 1901 1902 s = splnet(); 1903 1904 switch (command) { 1905 case SIOCSIFMTU: 1906 /* 1907 * Disable jumbo frames if it's not supported. 1908 */ 1909 if ((sc->sc_quirk & RTKQ_NOJUMBO) != 0 && 1910 ifr->ifr_mtu > ETHERMTU) { 1911 error = EINVAL; 1912 break; 1913 } 1914 1915 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU_JUMBO) 1916 error = EINVAL; 1917 else if ((error = ifioctl_common(ifp, command, data)) == 1918 ENETRESET) 1919 error = 0; 1920 break; 1921 default: 1922 if ((error = ether_ioctl(ifp, command, data)) != ENETRESET) 1923 break; 1924 1925 error = 0; 1926 1927 if (command == SIOCSIFCAP) 1928 error = (*ifp->if_init)(ifp); 1929 else if (command != SIOCADDMULTI && command != SIOCDELMULTI) 1930 ; 1931 else if (ifp->if_flags & IFF_RUNNING) 1932 rtk_setmulti(sc); 1933 break; 1934 } 1935 1936 splx(s); 1937 1938 return error; 1939 } 1940 1941 static void 1942 re_watchdog(struct ifnet *ifp) 1943 { 1944 struct rtk_softc *sc; 1945 int s; 1946 1947 sc = ifp->if_softc; 1948 s = splnet(); 1949 printf("%s: watchdog timeout\n", device_xname(sc->sc_dev)); 1950 ifp->if_oerrors++; 1951 1952 re_txeof(sc); 1953 re_rxeof(sc); 1954 1955 re_init(ifp); 1956 1957 splx(s); 1958 } 1959 1960 /* 1961 * Stop the adapter and free any mbufs allocated to the 1962 * RX and TX lists. 1963 */ 1964 static void 1965 re_stop(struct ifnet *ifp, int disable) 1966 { 1967 int i; 1968 struct rtk_softc *sc = ifp->if_softc; 1969 1970 callout_stop(&sc->rtk_tick_ch); 1971 1972 mii_down(&sc->mii); 1973 1974 if ((sc->sc_quirk & RTKQ_CMDSTOP) != 0) 1975 CSR_WRITE_1(sc, RTK_COMMAND, RTK_CMD_STOPREQ | RTK_CMD_TX_ENB | 1976 RTK_CMD_RX_ENB); 1977 else 1978 CSR_WRITE_1(sc, RTK_COMMAND, 0x00); 1979 DELAY(1000); 1980 CSR_WRITE_2(sc, RTK_IMR, 0x0000); 1981 CSR_WRITE_2(sc, RTK_ISR, 0xFFFF); 1982 1983 if (sc->re_head != NULL) { 1984 m_freem(sc->re_head); 1985 sc->re_head = sc->re_tail = NULL; 1986 } 1987 1988 /* Free the TX list buffers. */ 1989 for (i = 0; i < RE_TX_QLEN; i++) { 1990 if (sc->re_ldata.re_txq[i].txq_mbuf != NULL) { 1991 bus_dmamap_unload(sc->sc_dmat, 1992 sc->re_ldata.re_txq[i].txq_dmamap); 1993 m_freem(sc->re_ldata.re_txq[i].txq_mbuf); 1994 sc->re_ldata.re_txq[i].txq_mbuf = NULL; 1995 } 1996 } 1997 1998 /* Free the RX list buffers. */ 1999 for (i = 0; i < RE_RX_DESC_CNT; i++) { 2000 if (sc->re_ldata.re_rxsoft[i].rxs_mbuf != NULL) { 2001 bus_dmamap_unload(sc->sc_dmat, 2002 sc->re_ldata.re_rxsoft[i].rxs_dmamap); 2003 m_freem(sc->re_ldata.re_rxsoft[i].rxs_mbuf); 2004 sc->re_ldata.re_rxsoft[i].rxs_mbuf = NULL; 2005 } 2006 } 2007 2008 if (disable) 2009 re_disable(sc); 2010 2011 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2012 ifp->if_timer = 0; 2013 } 2014