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sys/dev/netif/nge/if_nge.c
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1 /* 2 * Copyright (c) 2001 Wind River Systems 3 * Copyright (c) 1997, 1998, 1999, 2000, 2001 4 * Bill Paul <wpaul@bsdi.com>. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Bill Paul. 17 * 4. Neither the name of the author nor the names of any co-contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 31 * THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $FreeBSD: src/sys/dev/nge/if_nge.c,v 1.13.2.13 2003/02/05 22:03:57 mbr Exp $ 34 */ 35 36 /* 37 * National Semiconductor DP83820/DP83821 gigabit ethernet driver 38 * for FreeBSD. Datasheets are available from: 39 * 40 * http://www.national.com/ds/DP/DP83820.pdf 41 * http://www.national.com/ds/DP/DP83821.pdf 42 * 43 * These chips are used on several low cost gigabit ethernet NICs 44 * sold by D-Link, Addtron, SMC and Asante. Both parts are 45 * virtually the same, except the 83820 is a 64-bit/32-bit part, 46 * while the 83821 is 32-bit only. 47 * 48 * Many cards also use National gigE transceivers, such as the 49 * DP83891, DP83861 and DP83862 gigPHYTER parts. The DP83861 datasheet 50 * contains a full register description that applies to all of these 51 * components: 52 * 53 * http://www.national.com/ds/DP/DP83861.pdf 54 * 55 * Written by Bill Paul <wpaul@bsdi.com> 56 * BSDi Open Source Solutions 57 */ 58 59 /* 60 * The NatSemi DP83820 and 83821 controllers are enhanced versions 61 * of the NatSemi MacPHYTER 10/100 devices. They support 10, 100 62 * and 1000Mbps speeds with 1000baseX (ten bit interface), MII and GMII 63 * ports. Other features include 8K TX FIFO and 32K RX FIFO, TCP/IP 64 * hardware checksum offload (IPv4 only), VLAN tagging and filtering, 65 * priority TX and RX queues, a 2048 bit multicast hash filter, 4 RX pattern 66 * matching buffers, one perfect address filter buffer and interrupt 67 * moderation. The 83820 supports both 64-bit and 32-bit addressing 68 * and data transfers: the 64-bit support can be toggled on or off 69 * via software. This affects the size of certain fields in the DMA 70 * descriptors. 71 * 72 * There are two bugs/misfeatures in the 83820/83821 that I have 73 * discovered so far: 74 * 75 * - Receive buffers must be aligned on 64-bit boundaries, which means 76 * you must resort to copying data in order to fix up the payload 77 * alignment. 78 * 79 * - In order to transmit jumbo frames larger than 8170 bytes, you have 80 * to turn off transmit checksum offloading, because the chip can't 81 * compute the checksum on an outgoing frame unless it fits entirely 82 * within the TX FIFO, which is only 8192 bytes in size. If you have 83 * TX checksum offload enabled and you transmit attempt to transmit a 84 * frame larger than 8170 bytes, the transmitter will wedge. 85 * 86 * To work around the latter problem, TX checksum offload is disabled 87 * if the user selects an MTU larger than 8152 (8170 - 18). 88 */ 89 90 #include "opt_ifpoll.h" 91 92 #include <sys/param.h> 93 #include <sys/systm.h> 94 #include <sys/sockio.h> 95 #include <sys/mbuf.h> 96 #include <sys/malloc.h> 97 #include <sys/kernel.h> 98 #include <sys/interrupt.h> 99 #include <sys/socket.h> 100 #include <sys/serialize.h> 101 #include <sys/bus.h> 102 #include <sys/rman.h> 103 #include <sys/thread2.h> 104 105 #include <net/if.h> 106 #include <net/ifq_var.h> 107 #include <net/if_arp.h> 108 #include <net/ethernet.h> 109 #include <net/if_dl.h> 110 #include <net/if_media.h> 111 #include <net/if_poll.h> 112 #include <net/if_types.h> 113 #include <net/vlan/if_vlan_var.h> 114 #include <net/vlan/if_vlan_ether.h> 115 116 #include <net/bpf.h> 117 118 #include <vm/vm.h> /* for vtophys */ 119 #include <vm/pmap.h> /* for vtophys */ 120 121 #include <dev/netif/mii_layer/mii.h> 122 #include <dev/netif/mii_layer/miivar.h> 123 124 #include "pcidevs.h" 125 #include <bus/pci/pcireg.h> 126 #include <bus/pci/pcivar.h> 127 128 #define NGE_USEIOSPACE 129 130 #include "if_ngereg.h" 131 132 133 /* "controller miibus0" required. See GENERIC if you get errors here. */ 134 #include "miibus_if.h" 135 136 #define NGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 137 138 /* 139 * Various supported device vendors/types and their names. 140 */ 141 static struct nge_type nge_devs[] = { 142 { PCI_VENDOR_NS, PCI_PRODUCT_NS_DP83820, 143 "National Semiconductor Gigabit Ethernet" }, 144 { 0, 0, NULL } 145 }; 146 147 static int nge_probe(device_t); 148 static int nge_attach(device_t); 149 static int nge_detach(device_t); 150 151 static int nge_alloc_jumbo_mem(struct nge_softc *); 152 static struct nge_jslot 153 *nge_jalloc(struct nge_softc *); 154 static void nge_jfree(void *); 155 static void nge_jref(void *); 156 157 static int nge_newbuf(struct nge_softc *, struct nge_desc *, 158 struct mbuf *); 159 static int nge_encap(struct nge_softc *, struct mbuf *, uint32_t *); 160 static void nge_rxeof(struct nge_softc *); 161 static void nge_txeof(struct nge_softc *); 162 static void nge_intr(void *); 163 static void nge_tick(void *); 164 static void nge_start(struct ifnet *, struct ifaltq_subque *); 165 static int nge_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *); 166 static void nge_init(void *); 167 static void nge_stop(struct nge_softc *); 168 static void nge_watchdog(struct ifnet *); 169 static void nge_shutdown(device_t); 170 static int nge_ifmedia_upd(struct ifnet *); 171 static void nge_ifmedia_sts(struct ifnet *, struct ifmediareq *); 172 173 static void nge_delay(struct nge_softc *); 174 static void nge_eeprom_idle(struct nge_softc *); 175 static void nge_eeprom_putbyte(struct nge_softc *, int); 176 static void nge_eeprom_getword(struct nge_softc *, int, uint16_t *); 177 static void nge_read_eeprom(struct nge_softc *, void *, int, int); 178 179 static void nge_mii_sync(struct nge_softc *); 180 static void nge_mii_send(struct nge_softc *, uint32_t, int); 181 static int nge_mii_readreg(struct nge_softc *, struct nge_mii_frame *); 182 static int nge_mii_writereg(struct nge_softc *, struct nge_mii_frame *); 183 184 static int nge_miibus_readreg(device_t, int, int); 185 static int nge_miibus_writereg(device_t, int, int, int); 186 static void nge_miibus_statchg(device_t); 187 188 static void nge_setmulti(struct nge_softc *); 189 static void nge_reset(struct nge_softc *); 190 static int nge_list_rx_init(struct nge_softc *); 191 static int nge_list_tx_init(struct nge_softc *); 192 #ifdef IFPOLL_ENABLE 193 static void nge_npoll(struct ifnet *, struct ifpoll_info *); 194 static void nge_npoll_compat(struct ifnet *, void *, int); 195 #endif 196 197 #ifdef NGE_USEIOSPACE 198 #define NGE_RES SYS_RES_IOPORT 199 #define NGE_RID NGE_PCI_LOIO 200 #else 201 #define NGE_RES SYS_RES_MEMORY 202 #define NGE_RID NGE_PCI_LOMEM 203 #endif 204 205 static device_method_t nge_methods[] = { 206 /* Device interface */ 207 DEVMETHOD(device_probe, nge_probe), 208 DEVMETHOD(device_attach, nge_attach), 209 DEVMETHOD(device_detach, nge_detach), 210 DEVMETHOD(device_shutdown, nge_shutdown), 211 212 /* bus interface */ 213 DEVMETHOD(bus_print_child, bus_generic_print_child), 214 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 215 216 /* MII interface */ 217 DEVMETHOD(miibus_readreg, nge_miibus_readreg), 218 DEVMETHOD(miibus_writereg, nge_miibus_writereg), 219 DEVMETHOD(miibus_statchg, nge_miibus_statchg), 220 221 DEVMETHOD_END 222 }; 223 224 static DEFINE_CLASS_0(nge, nge_driver, nge_methods, sizeof(struct nge_softc)); 225 static devclass_t nge_devclass; 226 227 DECLARE_DUMMY_MODULE(if_nge); 228 MODULE_DEPEND(if_nge, miibus, 1, 1, 1); 229 DRIVER_MODULE(if_nge, pci, nge_driver, nge_devclass, NULL, NULL); 230 DRIVER_MODULE(miibus, nge, miibus_driver, miibus_devclass, NULL, NULL); 231 232 #define NGE_SETBIT(sc, reg, x) \ 233 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x)) 234 235 #define NGE_CLRBIT(sc, reg, x) \ 236 CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x)) 237 238 #define SIO_SET(x) \ 239 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) | (x)) 240 241 #define SIO_CLR(x) \ 242 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) & ~(x)) 243 244 static void 245 nge_delay(struct nge_softc *sc) 246 { 247 int idx; 248 249 for (idx = (300 / 33) + 1; idx > 0; idx--) 250 CSR_READ_4(sc, NGE_CSR); 251 } 252 253 static void 254 nge_eeprom_idle(struct nge_softc *sc) 255 { 256 int i; 257 258 SIO_SET(NGE_MEAR_EE_CSEL); 259 nge_delay(sc); 260 SIO_SET(NGE_MEAR_EE_CLK); 261 nge_delay(sc); 262 263 for (i = 0; i < 25; i++) { 264 SIO_CLR(NGE_MEAR_EE_CLK); 265 nge_delay(sc); 266 SIO_SET(NGE_MEAR_EE_CLK); 267 nge_delay(sc); 268 } 269 270 SIO_CLR(NGE_MEAR_EE_CLK); 271 nge_delay(sc); 272 SIO_CLR(NGE_MEAR_EE_CSEL); 273 nge_delay(sc); 274 CSR_WRITE_4(sc, NGE_MEAR, 0x00000000); 275 } 276 277 /* 278 * Send a read command and address to the EEPROM, check for ACK. 279 */ 280 static void 281 nge_eeprom_putbyte(struct nge_softc *sc, int addr) 282 { 283 int d, i; 284 285 d = addr | NGE_EECMD_READ; 286 287 /* 288 * Feed in each bit and stobe the clock. 289 */ 290 for (i = 0x400; i; i >>= 1) { 291 if (d & i) 292 SIO_SET(NGE_MEAR_EE_DIN); 293 else 294 SIO_CLR(NGE_MEAR_EE_DIN); 295 nge_delay(sc); 296 SIO_SET(NGE_MEAR_EE_CLK); 297 nge_delay(sc); 298 SIO_CLR(NGE_MEAR_EE_CLK); 299 nge_delay(sc); 300 } 301 } 302 303 /* 304 * Read a word of data stored in the EEPROM at address 'addr.' 305 */ 306 static void 307 nge_eeprom_getword(struct nge_softc *sc, int addr, uint16_t *dest) 308 { 309 int i; 310 uint16_t word = 0; 311 312 /* Force EEPROM to idle state. */ 313 nge_eeprom_idle(sc); 314 315 /* Enter EEPROM access mode. */ 316 nge_delay(sc); 317 SIO_CLR(NGE_MEAR_EE_CLK); 318 nge_delay(sc); 319 SIO_SET(NGE_MEAR_EE_CSEL); 320 nge_delay(sc); 321 322 /* 323 * Send address of word we want to read. 324 */ 325 nge_eeprom_putbyte(sc, addr); 326 327 /* 328 * Start reading bits from EEPROM. 329 */ 330 for (i = 0x8000; i; i >>= 1) { 331 SIO_SET(NGE_MEAR_EE_CLK); 332 nge_delay(sc); 333 if (CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_EE_DOUT) 334 word |= i; 335 nge_delay(sc); 336 SIO_CLR(NGE_MEAR_EE_CLK); 337 nge_delay(sc); 338 } 339 340 /* Turn off EEPROM access mode. */ 341 nge_eeprom_idle(sc); 342 343 *dest = word; 344 } 345 346 /* 347 * Read a sequence of words from the EEPROM. 348 */ 349 static void 350 nge_read_eeprom(struct nge_softc *sc, void *dest, int off, int cnt) 351 { 352 int i; 353 uint16_t word = 0, *ptr; 354 355 for (i = 0; i < cnt; i++) { 356 nge_eeprom_getword(sc, off + i, &word); 357 ptr = (uint16_t *)((uint8_t *)dest + (i * 2)); 358 *ptr = word; 359 } 360 } 361 362 /* 363 * Sync the PHYs by setting data bit and strobing the clock 32 times. 364 */ 365 static void 366 nge_mii_sync(struct nge_softc *sc) 367 { 368 int i; 369 370 SIO_SET(NGE_MEAR_MII_DIR | NGE_MEAR_MII_DATA); 371 372 for (i = 0; i < 32; i++) { 373 SIO_SET(NGE_MEAR_MII_CLK); 374 DELAY(1); 375 SIO_CLR(NGE_MEAR_MII_CLK); 376 DELAY(1); 377 } 378 } 379 380 /* 381 * Clock a series of bits through the MII. 382 */ 383 static void 384 nge_mii_send(struct nge_softc *sc, uint32_t bits, int cnt) 385 { 386 int i; 387 388 SIO_CLR(NGE_MEAR_MII_CLK); 389 390 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 391 if (bits & i) 392 SIO_SET(NGE_MEAR_MII_DATA); 393 else 394 SIO_CLR(NGE_MEAR_MII_DATA); 395 DELAY(1); 396 SIO_CLR(NGE_MEAR_MII_CLK); 397 DELAY(1); 398 SIO_SET(NGE_MEAR_MII_CLK); 399 } 400 } 401 402 /* 403 * Read an PHY register through the MII. 404 */ 405 static int 406 nge_mii_readreg(struct nge_softc *sc, struct nge_mii_frame *frame) 407 { 408 int ack, i; 409 410 /* 411 * Set up frame for RX. 412 */ 413 frame->mii_stdelim = NGE_MII_STARTDELIM; 414 frame->mii_opcode = NGE_MII_READOP; 415 frame->mii_turnaround = 0; 416 frame->mii_data = 0; 417 418 CSR_WRITE_4(sc, NGE_MEAR, 0); 419 420 /* 421 * Turn on data xmit. 422 */ 423 SIO_SET(NGE_MEAR_MII_DIR); 424 425 nge_mii_sync(sc); 426 427 /* 428 * Send command/address info. 429 */ 430 nge_mii_send(sc, frame->mii_stdelim, 2); 431 nge_mii_send(sc, frame->mii_opcode, 2); 432 nge_mii_send(sc, frame->mii_phyaddr, 5); 433 nge_mii_send(sc, frame->mii_regaddr, 5); 434 435 /* Idle bit */ 436 SIO_CLR((NGE_MEAR_MII_CLK | NGE_MEAR_MII_DATA)); 437 DELAY(1); 438 SIO_SET(NGE_MEAR_MII_CLK); 439 DELAY(1); 440 441 /* Turn off xmit. */ 442 SIO_CLR(NGE_MEAR_MII_DIR); 443 /* Check for ack */ 444 SIO_CLR(NGE_MEAR_MII_CLK); 445 DELAY(1); 446 ack = CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_MII_DATA; 447 SIO_SET(NGE_MEAR_MII_CLK); 448 DELAY(1); 449 450 /* 451 * Now try reading data bits. If the ack failed, we still 452 * need to clock through 16 cycles to keep the PHY(s) in sync. 453 */ 454 if (ack) { 455 for(i = 0; i < 16; i++) { 456 SIO_CLR(NGE_MEAR_MII_CLK); 457 DELAY(1); 458 SIO_SET(NGE_MEAR_MII_CLK); 459 DELAY(1); 460 } 461 goto fail; 462 } 463 464 for (i = 0x8000; i; i >>= 1) { 465 SIO_CLR(NGE_MEAR_MII_CLK); 466 DELAY(1); 467 if (!ack) { 468 if (CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_MII_DATA) 469 frame->mii_data |= i; 470 DELAY(1); 471 } 472 SIO_SET(NGE_MEAR_MII_CLK); 473 DELAY(1); 474 } 475 476 fail: 477 SIO_CLR(NGE_MEAR_MII_CLK); 478 DELAY(1); 479 SIO_SET(NGE_MEAR_MII_CLK); 480 DELAY(1); 481 482 if (ack) 483 return(1); 484 return(0); 485 } 486 487 /* 488 * Write to a PHY register through the MII. 489 */ 490 static int 491 nge_mii_writereg(struct nge_softc *sc, struct nge_mii_frame *frame) 492 { 493 /* 494 * Set up frame for TX. 495 */ 496 497 frame->mii_stdelim = NGE_MII_STARTDELIM; 498 frame->mii_opcode = NGE_MII_WRITEOP; 499 frame->mii_turnaround = NGE_MII_TURNAROUND; 500 501 /* 502 * Turn on data output. 503 */ 504 SIO_SET(NGE_MEAR_MII_DIR); 505 506 nge_mii_sync(sc); 507 508 nge_mii_send(sc, frame->mii_stdelim, 2); 509 nge_mii_send(sc, frame->mii_opcode, 2); 510 nge_mii_send(sc, frame->mii_phyaddr, 5); 511 nge_mii_send(sc, frame->mii_regaddr, 5); 512 nge_mii_send(sc, frame->mii_turnaround, 2); 513 nge_mii_send(sc, frame->mii_data, 16); 514 515 /* Idle bit. */ 516 SIO_SET(NGE_MEAR_MII_CLK); 517 DELAY(1); 518 SIO_CLR(NGE_MEAR_MII_CLK); 519 DELAY(1); 520 521 /* 522 * Turn off xmit. 523 */ 524 SIO_CLR(NGE_MEAR_MII_DIR); 525 526 return(0); 527 } 528 529 static int 530 nge_miibus_readreg(device_t dev, int phy, int reg) 531 { 532 struct nge_softc *sc = device_get_softc(dev); 533 struct nge_mii_frame frame; 534 535 bzero((char *)&frame, sizeof(frame)); 536 537 frame.mii_phyaddr = phy; 538 frame.mii_regaddr = reg; 539 nge_mii_readreg(sc, &frame); 540 541 return(frame.mii_data); 542 } 543 544 static int 545 nge_miibus_writereg(device_t dev, int phy, int reg, int data) 546 { 547 struct nge_softc *sc = device_get_softc(dev); 548 struct nge_mii_frame frame; 549 550 bzero((char *)&frame, sizeof(frame)); 551 552 frame.mii_phyaddr = phy; 553 frame.mii_regaddr = reg; 554 frame.mii_data = data; 555 nge_mii_writereg(sc, &frame); 556 557 return(0); 558 } 559 560 static void 561 nge_miibus_statchg(device_t dev) 562 { 563 struct nge_softc *sc = device_get_softc(dev); 564 struct mii_data *mii; 565 int status; 566 567 if (sc->nge_tbi) { 568 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 569 == IFM_AUTO) { 570 status = CSR_READ_4(sc, NGE_TBI_ANLPAR); 571 if (status == 0 || status & NGE_TBIANAR_FDX) { 572 NGE_SETBIT(sc, NGE_TX_CFG, 573 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 574 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 575 } else { 576 NGE_CLRBIT(sc, NGE_TX_CFG, 577 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 578 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 579 } 580 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 581 != IFM_FDX) { 582 NGE_CLRBIT(sc, NGE_TX_CFG, 583 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 584 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 585 } else { 586 NGE_SETBIT(sc, NGE_TX_CFG, 587 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 588 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 589 } 590 } else { 591 mii = device_get_softc(sc->nge_miibus); 592 593 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 594 NGE_SETBIT(sc, NGE_TX_CFG, 595 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 596 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 597 } else { 598 NGE_CLRBIT(sc, NGE_TX_CFG, 599 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 600 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 601 } 602 603 /* If we have a 1000Mbps link, set the mode_1000 bit. */ 604 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T || 605 IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) { 606 NGE_SETBIT(sc, NGE_CFG, NGE_CFG_MODE_1000); 607 } else { 608 NGE_CLRBIT(sc, NGE_CFG, NGE_CFG_MODE_1000); 609 } 610 } 611 } 612 613 static void 614 nge_setmulti(struct nge_softc *sc) 615 { 616 struct ifnet *ifp = &sc->arpcom.ac_if; 617 struct ifmultiaddr *ifma; 618 uint32_t filtsave, h = 0, i; 619 int bit, index; 620 621 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 622 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 623 NGE_RXFILTCTL_MCHASH | NGE_RXFILTCTL_UCHASH); 624 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLMULTI); 625 return; 626 } 627 628 /* 629 * We have to explicitly enable the multicast hash table 630 * on the NatSemi chip if we want to use it, which we do. 631 * We also have to tell it that we don't want to use the 632 * hash table for matching unicast addresses. 633 */ 634 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_MCHASH); 635 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 636 NGE_RXFILTCTL_ALLMULTI | NGE_RXFILTCTL_UCHASH); 637 638 filtsave = CSR_READ_4(sc, NGE_RXFILT_CTL); 639 640 /* first, zot all the existing hash bits */ 641 for (i = 0; i < NGE_MCAST_FILTER_LEN; i += 2) { 642 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_MCAST_LO + i); 643 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 0); 644 } 645 646 /* 647 * From the 11 bits returned by the crc routine, the top 7 648 * bits represent the 16-bit word in the mcast hash table 649 * that needs to be updated, and the lower 4 bits represent 650 * which bit within that byte needs to be set. 651 */ 652 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 653 if (ifma->ifma_addr->sa_family != AF_LINK) 654 continue; 655 h = ether_crc32_be(LLADDR((struct sockaddr_dl *) 656 ifma->ifma_addr), ETHER_ADDR_LEN) >> 21; 657 index = (h >> 4) & 0x7F; 658 bit = h & 0xF; 659 CSR_WRITE_4(sc, NGE_RXFILT_CTL, 660 NGE_FILTADDR_MCAST_LO + (index * 2)); 661 NGE_SETBIT(sc, NGE_RXFILT_DATA, (1 << bit)); 662 } 663 664 CSR_WRITE_4(sc, NGE_RXFILT_CTL, filtsave); 665 } 666 667 static void 668 nge_reset(struct nge_softc *sc) 669 { 670 int i; 671 672 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RESET); 673 674 for (i = 0; i < NGE_TIMEOUT; i++) { 675 if ((CSR_READ_4(sc, NGE_CSR) & NGE_CSR_RESET) == 0) 676 break; 677 } 678 679 if (i == NGE_TIMEOUT) 680 kprintf("nge%d: reset never completed\n", sc->nge_unit); 681 682 /* Wait a little while for the chip to get its brains in order. */ 683 DELAY(1000); 684 685 /* 686 * If this is a NetSemi chip, make sure to clear 687 * PME mode. 688 */ 689 CSR_WRITE_4(sc, NGE_CLKRUN, NGE_CLKRUN_PMESTS); 690 CSR_WRITE_4(sc, NGE_CLKRUN, 0); 691 } 692 693 /* 694 * Probe for an NatSemi chip. Check the PCI vendor and device 695 * IDs against our list and return a device name if we find a match. 696 */ 697 static int 698 nge_probe(device_t dev) 699 { 700 struct nge_type *t; 701 uint16_t vendor, product; 702 703 vendor = pci_get_vendor(dev); 704 product = pci_get_device(dev); 705 706 for (t = nge_devs; t->nge_name != NULL; t++) { 707 if (vendor == t->nge_vid && product == t->nge_did) { 708 device_set_desc(dev, t->nge_name); 709 return(0); 710 } 711 } 712 713 return(ENXIO); 714 } 715 716 /* 717 * Attach the interface. Allocate softc structures, do ifmedia 718 * setup and ethernet/BPF attach. 719 */ 720 static int 721 nge_attach(device_t dev) 722 { 723 struct nge_softc *sc; 724 struct ifnet *ifp; 725 uint8_t eaddr[ETHER_ADDR_LEN]; 726 uint32_t command; 727 int error = 0, rid, unit; 728 const char *sep = ""; 729 730 sc = device_get_softc(dev); 731 unit = device_get_unit(dev); 732 callout_init(&sc->nge_stat_timer); 733 lwkt_serialize_init(&sc->nge_jslot_serializer); 734 735 /* 736 * Handle power management nonsense. 737 */ 738 command = pci_read_config(dev, NGE_PCI_CAPID, 4) & 0x000000FF; 739 if (command == 0x01) { 740 command = pci_read_config(dev, NGE_PCI_PWRMGMTCTRL, 4); 741 if (command & NGE_PSTATE_MASK) { 742 uint32_t iobase, membase, irq; 743 744 /* Save important PCI config data. */ 745 iobase = pci_read_config(dev, NGE_PCI_LOIO, 4); 746 membase = pci_read_config(dev, NGE_PCI_LOMEM, 4); 747 irq = pci_read_config(dev, NGE_PCI_INTLINE, 4); 748 749 /* Reset the power state. */ 750 kprintf("nge%d: chip is in D%d power mode " 751 "-- setting to D0\n", unit, command & NGE_PSTATE_MASK); 752 command &= 0xFFFFFFFC; 753 pci_write_config(dev, NGE_PCI_PWRMGMTCTRL, command, 4); 754 755 /* Restore PCI config data. */ 756 pci_write_config(dev, NGE_PCI_LOIO, iobase, 4); 757 pci_write_config(dev, NGE_PCI_LOMEM, membase, 4); 758 pci_write_config(dev, NGE_PCI_INTLINE, irq, 4); 759 } 760 } 761 762 /* 763 * Map control/status registers. 764 */ 765 command = pci_read_config(dev, PCIR_COMMAND, 4); 766 command |= (PCIM_CMD_PORTEN|PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN); 767 pci_write_config(dev, PCIR_COMMAND, command, 4); 768 command = pci_read_config(dev, PCIR_COMMAND, 4); 769 770 #ifdef NGE_USEIOSPACE 771 if (!(command & PCIM_CMD_PORTEN)) { 772 kprintf("nge%d: failed to enable I/O ports!\n", unit); 773 error = ENXIO; 774 return(error); 775 } 776 #else 777 if (!(command & PCIM_CMD_MEMEN)) { 778 kprintf("nge%d: failed to enable memory mapping!\n", unit); 779 error = ENXIO; 780 return(error); 781 } 782 #endif 783 784 rid = NGE_RID; 785 sc->nge_res = bus_alloc_resource_any(dev, NGE_RES, &rid, RF_ACTIVE); 786 787 if (sc->nge_res == NULL) { 788 kprintf("nge%d: couldn't map ports/memory\n", unit); 789 error = ENXIO; 790 return(error); 791 } 792 793 sc->nge_btag = rman_get_bustag(sc->nge_res); 794 sc->nge_bhandle = rman_get_bushandle(sc->nge_res); 795 796 /* Allocate interrupt */ 797 rid = 0; 798 sc->nge_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 799 RF_SHAREABLE | RF_ACTIVE); 800 801 if (sc->nge_irq == NULL) { 802 kprintf("nge%d: couldn't map interrupt\n", unit); 803 error = ENXIO; 804 goto fail; 805 } 806 807 /* Reset the adapter. */ 808 nge_reset(sc); 809 810 /* 811 * Get station address from the EEPROM. 812 */ 813 nge_read_eeprom(sc, &eaddr[4], NGE_EE_NODEADDR, 1); 814 nge_read_eeprom(sc, &eaddr[2], NGE_EE_NODEADDR + 1, 1); 815 nge_read_eeprom(sc, &eaddr[0], NGE_EE_NODEADDR + 2, 1); 816 817 sc->nge_unit = unit; 818 819 sc->nge_ldata = contigmalloc(sizeof(struct nge_list_data), M_DEVBUF, 820 M_WAITOK | M_ZERO, 0, 0xffffffff, PAGE_SIZE, 0); 821 822 if (sc->nge_ldata == NULL) { 823 kprintf("nge%d: no memory for list buffers!\n", unit); 824 error = ENXIO; 825 goto fail; 826 } 827 828 /* Try to allocate memory for jumbo buffers. */ 829 if (nge_alloc_jumbo_mem(sc)) { 830 kprintf("nge%d: jumbo buffer allocation failed\n", 831 sc->nge_unit); 832 error = ENXIO; 833 goto fail; 834 } 835 836 ifp = &sc->arpcom.ac_if; 837 ifp->if_softc = sc; 838 if_initname(ifp, "nge", unit); 839 ifp->if_mtu = ETHERMTU; 840 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 841 ifp->if_ioctl = nge_ioctl; 842 ifp->if_start = nge_start; 843 #ifdef IFPOLL_ENABLE 844 ifp->if_npoll = nge_npoll; 845 #endif 846 ifp->if_watchdog = nge_watchdog; 847 ifp->if_init = nge_init; 848 ifp->if_baudrate = 1000000000; 849 ifq_set_maxlen(&ifp->if_snd, NGE_TX_LIST_CNT - 1); 850 ifq_set_ready(&ifp->if_snd); 851 ifp->if_hwassist = NGE_CSUM_FEATURES; 852 ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_VLAN_HWTAGGING; 853 ifp->if_capenable = ifp->if_capabilities; 854 855 /* 856 * Do MII setup. 857 */ 858 if (mii_phy_probe(dev, &sc->nge_miibus, 859 nge_ifmedia_upd, nge_ifmedia_sts)) { 860 if (CSR_READ_4(sc, NGE_CFG) & NGE_CFG_TBI_EN) { 861 sc->nge_tbi = 1; 862 device_printf(dev, "Using TBI\n"); 863 864 sc->nge_miibus = dev; 865 866 ifmedia_init(&sc->nge_ifmedia, 0, nge_ifmedia_upd, 867 nge_ifmedia_sts); 868 #define ADD(m, c) ifmedia_add(&sc->nge_ifmedia, (m), (c), NULL) 869 #define PRINT(s) kprintf("%s%s", sep, s); sep = ", " 870 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, 0), 0); 871 device_printf(dev, " "); 872 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, 0), 0); 873 PRINT("1000baseSX"); 874 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, 0),0); 875 PRINT("1000baseSX-FDX"); 876 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 0); 877 PRINT("auto"); 878 879 kprintf("\n"); 880 #undef ADD 881 #undef PRINT 882 ifmedia_set(&sc->nge_ifmedia, 883 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0)); 884 885 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 886 | NGE_GPIO_GP4_OUT 887 | NGE_GPIO_GP1_OUTENB | NGE_GPIO_GP2_OUTENB 888 | NGE_GPIO_GP3_OUTENB 889 | NGE_GPIO_GP3_IN | NGE_GPIO_GP4_IN); 890 891 } else { 892 kprintf("nge%d: MII without any PHY!\n", sc->nge_unit); 893 error = ENXIO; 894 goto fail; 895 } 896 } 897 898 /* 899 * Call MI attach routine. 900 */ 901 ether_ifattach(ifp, eaddr, NULL); 902 903 ifq_set_cpuid(&ifp->if_snd, rman_get_cpuid(sc->nge_irq)); 904 905 #ifdef IFPOLL_ENABLE 906 ifpoll_compat_setup(&sc->nge_npoll, NULL, NULL, device_get_unit(dev), 907 ifp->if_serializer); 908 #endif 909 910 error = bus_setup_intr(dev, sc->nge_irq, INTR_MPSAFE, 911 nge_intr, sc, &sc->nge_intrhand, 912 ifp->if_serializer); 913 if (error) { 914 ether_ifdetach(ifp); 915 device_printf(dev, "couldn't set up irq\n"); 916 goto fail; 917 } 918 919 return(0); 920 fail: 921 nge_detach(dev); 922 return(error); 923 } 924 925 static int 926 nge_detach(device_t dev) 927 { 928 struct nge_softc *sc = device_get_softc(dev); 929 struct ifnet *ifp = &sc->arpcom.ac_if; 930 931 if (device_is_attached(dev)) { 932 lwkt_serialize_enter(ifp->if_serializer); 933 nge_reset(sc); 934 nge_stop(sc); 935 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 936 lwkt_serialize_exit(ifp->if_serializer); 937 938 ether_ifdetach(ifp); 939 } 940 941 if (sc->nge_miibus) 942 device_delete_child(dev, sc->nge_miibus); 943 bus_generic_detach(dev); 944 945 if (sc->nge_irq) 946 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 947 if (sc->nge_res) 948 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 949 if (sc->nge_ldata) { 950 contigfree(sc->nge_ldata, sizeof(struct nge_list_data), 951 M_DEVBUF); 952 } 953 if (sc->nge_cdata.nge_jumbo_buf) 954 contigfree(sc->nge_cdata.nge_jumbo_buf, NGE_JMEM, M_DEVBUF); 955 956 return(0); 957 } 958 959 /* 960 * Initialize the transmit descriptors. 961 */ 962 static int 963 nge_list_tx_init(struct nge_softc *sc) 964 { 965 struct nge_list_data *ld; 966 struct nge_ring_data *cd; 967 int i; 968 969 cd = &sc->nge_cdata; 970 ld = sc->nge_ldata; 971 972 for (i = 0; i < NGE_TX_LIST_CNT; i++) { 973 if (i == (NGE_TX_LIST_CNT - 1)) { 974 ld->nge_tx_list[i].nge_nextdesc = 975 &ld->nge_tx_list[0]; 976 ld->nge_tx_list[i].nge_next = 977 vtophys(&ld->nge_tx_list[0]); 978 } else { 979 ld->nge_tx_list[i].nge_nextdesc = 980 &ld->nge_tx_list[i + 1]; 981 ld->nge_tx_list[i].nge_next = 982 vtophys(&ld->nge_tx_list[i + 1]); 983 } 984 ld->nge_tx_list[i].nge_mbuf = NULL; 985 ld->nge_tx_list[i].nge_ptr = 0; 986 ld->nge_tx_list[i].nge_ctl = 0; 987 } 988 989 cd->nge_tx_prod = cd->nge_tx_cons = cd->nge_tx_cnt = 0; 990 991 return(0); 992 } 993 994 995 /* 996 * Initialize the RX descriptors and allocate mbufs for them. Note that 997 * we arrange the descriptors in a closed ring, so that the last descriptor 998 * points back to the first. 999 */ 1000 static int 1001 nge_list_rx_init(struct nge_softc *sc) 1002 { 1003 struct nge_list_data *ld; 1004 struct nge_ring_data *cd; 1005 int i; 1006 1007 ld = sc->nge_ldata; 1008 cd = &sc->nge_cdata; 1009 1010 for (i = 0; i < NGE_RX_LIST_CNT; i++) { 1011 if (nge_newbuf(sc, &ld->nge_rx_list[i], NULL) == ENOBUFS) 1012 return(ENOBUFS); 1013 if (i == (NGE_RX_LIST_CNT - 1)) { 1014 ld->nge_rx_list[i].nge_nextdesc = 1015 &ld->nge_rx_list[0]; 1016 ld->nge_rx_list[i].nge_next = 1017 vtophys(&ld->nge_rx_list[0]); 1018 } else { 1019 ld->nge_rx_list[i].nge_nextdesc = 1020 &ld->nge_rx_list[i + 1]; 1021 ld->nge_rx_list[i].nge_next = 1022 vtophys(&ld->nge_rx_list[i + 1]); 1023 } 1024 } 1025 1026 cd->nge_rx_prod = 0; 1027 1028 return(0); 1029 } 1030 1031 /* 1032 * Initialize an RX descriptor and attach an MBUF cluster. 1033 */ 1034 static int 1035 nge_newbuf(struct nge_softc *sc, struct nge_desc *c, struct mbuf *m) 1036 { 1037 struct mbuf *m_new = NULL; 1038 struct nge_jslot *buf; 1039 1040 if (m == NULL) { 1041 MGETHDR(m_new, MB_DONTWAIT, MT_DATA); 1042 if (m_new == NULL) { 1043 kprintf("nge%d: no memory for rx list " 1044 "-- packet dropped!\n", sc->nge_unit); 1045 return(ENOBUFS); 1046 } 1047 1048 /* Allocate the jumbo buffer */ 1049 buf = nge_jalloc(sc); 1050 if (buf == NULL) { 1051 #ifdef NGE_VERBOSE 1052 kprintf("nge%d: jumbo allocation failed " 1053 "-- packet dropped!\n", sc->nge_unit); 1054 #endif 1055 m_freem(m_new); 1056 return(ENOBUFS); 1057 } 1058 /* Attach the buffer to the mbuf */ 1059 m_new->m_ext.ext_arg = buf; 1060 m_new->m_ext.ext_buf = buf->nge_buf; 1061 m_new->m_ext.ext_free = nge_jfree; 1062 m_new->m_ext.ext_ref = nge_jref; 1063 m_new->m_ext.ext_size = NGE_JUMBO_FRAMELEN; 1064 1065 m_new->m_data = m_new->m_ext.ext_buf; 1066 m_new->m_flags |= M_EXT; 1067 m_new->m_len = m_new->m_pkthdr.len = m_new->m_ext.ext_size; 1068 } else { 1069 m_new = m; 1070 m_new->m_len = m_new->m_pkthdr.len = NGE_JLEN; 1071 m_new->m_data = m_new->m_ext.ext_buf; 1072 } 1073 1074 m_adj(m_new, sizeof(uint64_t)); 1075 1076 c->nge_mbuf = m_new; 1077 c->nge_ptr = vtophys(mtod(m_new, caddr_t)); 1078 c->nge_ctl = m_new->m_len; 1079 c->nge_extsts = 0; 1080 1081 return(0); 1082 } 1083 1084 static int 1085 nge_alloc_jumbo_mem(struct nge_softc *sc) 1086 { 1087 caddr_t ptr; 1088 int i; 1089 struct nge_jslot *entry; 1090 1091 /* Grab a big chunk o' storage. */ 1092 sc->nge_cdata.nge_jumbo_buf = contigmalloc(NGE_JMEM, M_DEVBUF, 1093 M_WAITOK, 0, 0xffffffff, PAGE_SIZE, 0); 1094 1095 if (sc->nge_cdata.nge_jumbo_buf == NULL) { 1096 kprintf("nge%d: no memory for jumbo buffers!\n", sc->nge_unit); 1097 return(ENOBUFS); 1098 } 1099 1100 SLIST_INIT(&sc->nge_jfree_listhead); 1101 1102 /* 1103 * Now divide it up into 9K pieces and save the addresses 1104 * in an array. 1105 */ 1106 ptr = sc->nge_cdata.nge_jumbo_buf; 1107 for (i = 0; i < NGE_JSLOTS; i++) { 1108 entry = &sc->nge_cdata.nge_jslots[i]; 1109 entry->nge_sc = sc; 1110 entry->nge_buf = ptr; 1111 entry->nge_inuse = 0; 1112 entry->nge_slot = i; 1113 SLIST_INSERT_HEAD(&sc->nge_jfree_listhead, entry, jslot_link); 1114 ptr += NGE_JLEN; 1115 } 1116 1117 return(0); 1118 } 1119 1120 1121 /* 1122 * Allocate a jumbo buffer. 1123 */ 1124 static struct nge_jslot * 1125 nge_jalloc(struct nge_softc *sc) 1126 { 1127 struct nge_jslot *entry; 1128 1129 lwkt_serialize_enter(&sc->nge_jslot_serializer); 1130 entry = SLIST_FIRST(&sc->nge_jfree_listhead); 1131 if (entry) { 1132 SLIST_REMOVE_HEAD(&sc->nge_jfree_listhead, jslot_link); 1133 entry->nge_inuse = 1; 1134 } else { 1135 #ifdef NGE_VERBOSE 1136 kprintf("nge%d: no free jumbo buffers\n", sc->nge_unit); 1137 #endif 1138 } 1139 lwkt_serialize_exit(&sc->nge_jslot_serializer); 1140 return(entry); 1141 } 1142 1143 /* 1144 * Adjust usage count on a jumbo buffer. In general this doesn't 1145 * get used much because our jumbo buffers don't get passed around 1146 * a lot, but it's implemented for correctness. 1147 */ 1148 static void 1149 nge_jref(void *arg) 1150 { 1151 struct nge_jslot *entry = (struct nge_jslot *)arg; 1152 struct nge_softc *sc = entry->nge_sc; 1153 1154 if (sc == NULL) 1155 panic("nge_jref: can't find softc pointer!"); 1156 1157 if (&sc->nge_cdata.nge_jslots[entry->nge_slot] != entry) 1158 panic("nge_jref: asked to reference buffer " 1159 "that we don't manage!"); 1160 else if (entry->nge_inuse == 0) 1161 panic("nge_jref: buffer already free!"); 1162 else 1163 atomic_add_int(&entry->nge_inuse, 1); 1164 } 1165 1166 /* 1167 * Release a jumbo buffer. 1168 */ 1169 static void 1170 nge_jfree(void *arg) 1171 { 1172 struct nge_jslot *entry = (struct nge_jslot *)arg; 1173 struct nge_softc *sc = entry->nge_sc; 1174 1175 if (sc == NULL) 1176 panic("nge_jref: can't find softc pointer!"); 1177 1178 if (&sc->nge_cdata.nge_jslots[entry->nge_slot] != entry) { 1179 panic("nge_jref: asked to reference buffer " 1180 "that we don't manage!"); 1181 } else if (entry->nge_inuse == 0) { 1182 panic("nge_jref: buffer already free!"); 1183 } else { 1184 lwkt_serialize_enter(&sc->nge_jslot_serializer); 1185 atomic_subtract_int(&entry->nge_inuse, 1); 1186 if (entry->nge_inuse == 0) { 1187 SLIST_INSERT_HEAD(&sc->nge_jfree_listhead, 1188 entry, jslot_link); 1189 } 1190 lwkt_serialize_exit(&sc->nge_jslot_serializer); 1191 } 1192 } 1193 /* 1194 * A frame has been uploaded: pass the resulting mbuf chain up to 1195 * the higher level protocols. 1196 */ 1197 static void 1198 nge_rxeof(struct nge_softc *sc) 1199 { 1200 struct mbuf *m; 1201 struct ifnet *ifp = &sc->arpcom.ac_if; 1202 struct nge_desc *cur_rx; 1203 int i, total_len = 0; 1204 uint32_t rxstat; 1205 1206 i = sc->nge_cdata.nge_rx_prod; 1207 1208 while(NGE_OWNDESC(&sc->nge_ldata->nge_rx_list[i])) { 1209 struct mbuf *m0 = NULL; 1210 uint32_t extsts; 1211 1212 #ifdef IFPOLL_ENABLE 1213 if (ifp->if_flags & IFF_NPOLLING) { 1214 if (sc->rxcycles <= 0) 1215 break; 1216 sc->rxcycles--; 1217 } 1218 #endif /* IFPOLL_ENABLE */ 1219 1220 cur_rx = &sc->nge_ldata->nge_rx_list[i]; 1221 rxstat = cur_rx->nge_rxstat; 1222 extsts = cur_rx->nge_extsts; 1223 m = cur_rx->nge_mbuf; 1224 cur_rx->nge_mbuf = NULL; 1225 total_len = NGE_RXBYTES(cur_rx); 1226 NGE_INC(i, NGE_RX_LIST_CNT); 1227 /* 1228 * If an error occurs, update stats, clear the 1229 * status word and leave the mbuf cluster in place: 1230 * it should simply get re-used next time this descriptor 1231 * comes up in the ring. 1232 */ 1233 if ((rxstat & NGE_CMDSTS_PKT_OK) == 0) { 1234 IFNET_STAT_INC(ifp, ierrors, 1); 1235 nge_newbuf(sc, cur_rx, m); 1236 continue; 1237 } 1238 1239 /* 1240 * Ok. NatSemi really screwed up here. This is the 1241 * only gigE chip I know of with alignment constraints 1242 * on receive buffers. RX buffers must be 64-bit aligned. 1243 */ 1244 #ifdef __i386__ 1245 /* 1246 * By popular demand, ignore the alignment problems 1247 * on the Intel x86 platform. The performance hit 1248 * incurred due to unaligned accesses is much smaller 1249 * than the hit produced by forcing buffer copies all 1250 * the time, especially with jumbo frames. We still 1251 * need to fix up the alignment everywhere else though. 1252 */ 1253 if (nge_newbuf(sc, cur_rx, NULL) == ENOBUFS) { 1254 #endif 1255 m0 = m_devget(mtod(m, char *) - ETHER_ALIGN, 1256 total_len + ETHER_ALIGN, 0, ifp, NULL); 1257 nge_newbuf(sc, cur_rx, m); 1258 if (m0 == NULL) { 1259 kprintf("nge%d: no receive buffers " 1260 "available -- packet dropped!\n", 1261 sc->nge_unit); 1262 IFNET_STAT_INC(ifp, ierrors, 1); 1263 continue; 1264 } 1265 m_adj(m0, ETHER_ALIGN); 1266 m = m0; 1267 #ifdef __i386__ 1268 } else { 1269 m->m_pkthdr.rcvif = ifp; 1270 m->m_pkthdr.len = m->m_len = total_len; 1271 } 1272 #endif 1273 1274 IFNET_STAT_INC(ifp, ipackets, 1); 1275 1276 /* Do IP checksum checking. */ 1277 if (extsts & NGE_RXEXTSTS_IPPKT) 1278 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 1279 if (!(extsts & NGE_RXEXTSTS_IPCSUMERR)) 1280 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1281 if ((extsts & NGE_RXEXTSTS_TCPPKT && 1282 (extsts & NGE_RXEXTSTS_TCPCSUMERR) == 0) || 1283 (extsts & NGE_RXEXTSTS_UDPPKT && 1284 (extsts & NGE_RXEXTSTS_UDPCSUMERR) == 0)) { 1285 m->m_pkthdr.csum_flags |= 1286 CSUM_DATA_VALID|CSUM_PSEUDO_HDR| 1287 CSUM_FRAG_NOT_CHECKED; 1288 m->m_pkthdr.csum_data = 0xffff; 1289 } 1290 1291 /* 1292 * If we received a packet with a vlan tag, pass it 1293 * to vlan_input() instead of ether_input(). 1294 */ 1295 if (extsts & NGE_RXEXTSTS_VLANPKT) { 1296 m->m_flags |= M_VLANTAG; 1297 m->m_pkthdr.ether_vlantag = 1298 (extsts & NGE_RXEXTSTS_VTCI); 1299 } 1300 ifp->if_input(ifp, m); 1301 } 1302 1303 sc->nge_cdata.nge_rx_prod = i; 1304 } 1305 1306 /* 1307 * A frame was downloaded to the chip. It's safe for us to clean up 1308 * the list buffers. 1309 */ 1310 static void 1311 nge_txeof(struct nge_softc *sc) 1312 { 1313 struct ifnet *ifp = &sc->arpcom.ac_if; 1314 struct nge_desc *cur_tx = NULL; 1315 uint32_t idx; 1316 1317 /* Clear the timeout timer. */ 1318 ifp->if_timer = 0; 1319 1320 /* 1321 * Go through our tx list and free mbufs for those 1322 * frames that have been transmitted. 1323 */ 1324 idx = sc->nge_cdata.nge_tx_cons; 1325 while (idx != sc->nge_cdata.nge_tx_prod) { 1326 cur_tx = &sc->nge_ldata->nge_tx_list[idx]; 1327 1328 if (NGE_OWNDESC(cur_tx)) 1329 break; 1330 1331 if (cur_tx->nge_ctl & NGE_CMDSTS_MORE) { 1332 sc->nge_cdata.nge_tx_cnt--; 1333 NGE_INC(idx, NGE_TX_LIST_CNT); 1334 continue; 1335 } 1336 1337 if (!(cur_tx->nge_ctl & NGE_CMDSTS_PKT_OK)) { 1338 IFNET_STAT_INC(ifp, oerrors, 1); 1339 if (cur_tx->nge_txstat & NGE_TXSTAT_EXCESSCOLLS) 1340 IFNET_STAT_INC(ifp, collisions, 1); 1341 if (cur_tx->nge_txstat & NGE_TXSTAT_OUTOFWINCOLL) 1342 IFNET_STAT_INC(ifp, collisions, 1); 1343 } 1344 1345 IFNET_STAT_INC(ifp, collisions, 1346 (cur_tx->nge_txstat & NGE_TXSTAT_COLLCNT) >> 16); 1347 1348 IFNET_STAT_INC(ifp, opackets, 1); 1349 if (cur_tx->nge_mbuf != NULL) { 1350 m_freem(cur_tx->nge_mbuf); 1351 cur_tx->nge_mbuf = NULL; 1352 } 1353 1354 sc->nge_cdata.nge_tx_cnt--; 1355 NGE_INC(idx, NGE_TX_LIST_CNT); 1356 ifp->if_timer = 0; 1357 } 1358 1359 sc->nge_cdata.nge_tx_cons = idx; 1360 1361 if (cur_tx != NULL) 1362 ifq_clr_oactive(&ifp->if_snd); 1363 } 1364 1365 static void 1366 nge_tick(void *xsc) 1367 { 1368 struct nge_softc *sc = xsc; 1369 struct ifnet *ifp = &sc->arpcom.ac_if; 1370 struct mii_data *mii; 1371 1372 lwkt_serialize_enter(ifp->if_serializer); 1373 1374 if (sc->nge_tbi) { 1375 if (sc->nge_link == 0) { 1376 if (CSR_READ_4(sc, NGE_TBI_BMSR) 1377 & NGE_TBIBMSR_ANEG_DONE) { 1378 kprintf("nge%d: gigabit link up\n", 1379 sc->nge_unit); 1380 nge_miibus_statchg(sc->nge_miibus); 1381 sc->nge_link++; 1382 if (!ifq_is_empty(&ifp->if_snd)) 1383 if_devstart(ifp); 1384 } 1385 } 1386 } else { 1387 mii = device_get_softc(sc->nge_miibus); 1388 mii_tick(mii); 1389 1390 if (sc->nge_link == 0) { 1391 if (mii->mii_media_status & IFM_ACTIVE && 1392 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 1393 sc->nge_link++; 1394 if (IFM_SUBTYPE(mii->mii_media_active) 1395 == IFM_1000_T) 1396 kprintf("nge%d: gigabit link up\n", 1397 sc->nge_unit); 1398 if (!ifq_is_empty(&ifp->if_snd)) 1399 if_devstart(ifp); 1400 } 1401 } 1402 } 1403 callout_reset(&sc->nge_stat_timer, hz, nge_tick, sc); 1404 1405 lwkt_serialize_exit(ifp->if_serializer); 1406 } 1407 1408 #ifdef IFPOLL_ENABLE 1409 1410 static void 1411 nge_npoll_compat(struct ifnet *ifp, void *arg __unused, int count) 1412 { 1413 struct nge_softc *sc = ifp->if_softc; 1414 1415 ASSERT_SERIALIZED(ifp->if_serializer); 1416 1417 /* 1418 * On the nge, reading the status register also clears it. 1419 * So before returning to intr mode we must make sure that all 1420 * possible pending sources of interrupts have been served. 1421 * In practice this means run to completion the *eof routines, 1422 * and then call the interrupt routine 1423 */ 1424 sc->rxcycles = count; 1425 nge_rxeof(sc); 1426 nge_txeof(sc); 1427 if (!ifq_is_empty(&ifp->if_snd)) 1428 if_devstart(ifp); 1429 1430 if (sc->nge_npoll.ifpc_stcount-- == 0) { 1431 uint32_t status; 1432 1433 sc->nge_npoll.ifpc_stcount = sc->nge_npoll.ifpc_stfrac; 1434 1435 /* Reading the ISR register clears all interrupts. */ 1436 status = CSR_READ_4(sc, NGE_ISR); 1437 1438 if (status & (NGE_ISR_RX_ERR|NGE_ISR_RX_OFLOW)) 1439 nge_rxeof(sc); 1440 1441 if (status & (NGE_ISR_RX_IDLE)) 1442 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1443 1444 if (status & NGE_ISR_SYSERR) { 1445 nge_reset(sc); 1446 nge_init(sc); 1447 } 1448 } 1449 } 1450 1451 static void 1452 nge_npoll(struct ifnet *ifp, struct ifpoll_info *info) 1453 { 1454 struct nge_softc *sc = ifp->if_softc; 1455 1456 ASSERT_SERIALIZED(ifp->if_serializer); 1457 1458 if (info != NULL) { 1459 int cpuid = sc->nge_npoll.ifpc_cpuid; 1460 1461 info->ifpi_rx[cpuid].poll_func = nge_npoll_compat; 1462 info->ifpi_rx[cpuid].arg = NULL; 1463 info->ifpi_rx[cpuid].serializer = ifp->if_serializer; 1464 1465 if (ifp->if_flags & IFF_RUNNING) { 1466 /* disable interrupts */ 1467 CSR_WRITE_4(sc, NGE_IER, 0); 1468 sc->nge_npoll.ifpc_stcount = 0; 1469 } 1470 ifq_set_cpuid(&ifp->if_snd, cpuid); 1471 } else { 1472 if (ifp->if_flags & IFF_RUNNING) { 1473 /* enable interrupts */ 1474 CSR_WRITE_4(sc, NGE_IER, 1); 1475 } 1476 ifq_set_cpuid(&ifp->if_snd, rman_get_cpuid(sc->nge_irq)); 1477 } 1478 } 1479 1480 #endif /* IFPOLL_ENABLE */ 1481 1482 static void 1483 nge_intr(void *arg) 1484 { 1485 struct nge_softc *sc = arg; 1486 struct ifnet *ifp = &sc->arpcom.ac_if; 1487 uint32_t status; 1488 1489 /* Supress unwanted interrupts */ 1490 if (!(ifp->if_flags & IFF_UP)) { 1491 nge_stop(sc); 1492 return; 1493 } 1494 1495 /* Disable interrupts. */ 1496 CSR_WRITE_4(sc, NGE_IER, 0); 1497 1498 /* Data LED on for TBI mode */ 1499 if(sc->nge_tbi) 1500 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1501 | NGE_GPIO_GP3_OUT); 1502 1503 for (;;) { 1504 /* Reading the ISR register clears all interrupts. */ 1505 status = CSR_READ_4(sc, NGE_ISR); 1506 1507 if ((status & NGE_INTRS) == 0) 1508 break; 1509 1510 if ((status & NGE_ISR_TX_DESC_OK) || 1511 (status & NGE_ISR_TX_ERR) || 1512 (status & NGE_ISR_TX_OK) || 1513 (status & NGE_ISR_TX_IDLE)) 1514 nge_txeof(sc); 1515 1516 if ((status & NGE_ISR_RX_DESC_OK) || 1517 (status & NGE_ISR_RX_ERR) || 1518 (status & NGE_ISR_RX_OFLOW) || 1519 (status & NGE_ISR_RX_FIFO_OFLOW) || 1520 (status & NGE_ISR_RX_IDLE) || 1521 (status & NGE_ISR_RX_OK)) 1522 nge_rxeof(sc); 1523 1524 if ((status & NGE_ISR_RX_IDLE)) 1525 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1526 1527 if (status & NGE_ISR_SYSERR) { 1528 nge_reset(sc); 1529 ifp->if_flags &= ~IFF_RUNNING; 1530 nge_init(sc); 1531 } 1532 1533 #ifdef notyet 1534 /* mii_tick should only be called once per second */ 1535 if (status & NGE_ISR_PHY_INTR) { 1536 sc->nge_link = 0; 1537 nge_tick_serialized(sc); 1538 } 1539 #endif 1540 } 1541 1542 /* Re-enable interrupts. */ 1543 CSR_WRITE_4(sc, NGE_IER, 1); 1544 1545 if (!ifq_is_empty(&ifp->if_snd)) 1546 if_devstart(ifp); 1547 1548 /* Data LED off for TBI mode */ 1549 1550 if(sc->nge_tbi) 1551 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1552 & ~NGE_GPIO_GP3_OUT); 1553 } 1554 1555 /* 1556 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1557 * pointers to the fragment pointers. 1558 */ 1559 static int 1560 nge_encap(struct nge_softc *sc, struct mbuf *m_head, uint32_t *txidx) 1561 { 1562 struct nge_desc *f = NULL; 1563 struct mbuf *m; 1564 int frag, cur, cnt = 0; 1565 1566 /* 1567 * Start packing the mbufs in this chain into 1568 * the fragment pointers. Stop when we run out 1569 * of fragments or hit the end of the mbuf chain. 1570 */ 1571 cur = frag = *txidx; 1572 1573 for (m = m_head; m != NULL; m = m->m_next) { 1574 if (m->m_len != 0) { 1575 if ((NGE_TX_LIST_CNT - 1576 (sc->nge_cdata.nge_tx_cnt + cnt)) < 2) 1577 break; 1578 f = &sc->nge_ldata->nge_tx_list[frag]; 1579 f->nge_ctl = NGE_CMDSTS_MORE | m->m_len; 1580 f->nge_ptr = vtophys(mtod(m, vm_offset_t)); 1581 if (cnt != 0) 1582 f->nge_ctl |= NGE_CMDSTS_OWN; 1583 cur = frag; 1584 NGE_INC(frag, NGE_TX_LIST_CNT); 1585 cnt++; 1586 } 1587 } 1588 /* Caller should make sure that 'm_head' is not excessive fragmented */ 1589 KASSERT(m == NULL, ("too many fragments")); 1590 1591 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts = 0; 1592 if (m_head->m_pkthdr.csum_flags) { 1593 if (m_head->m_pkthdr.csum_flags & CSUM_IP) 1594 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1595 NGE_TXEXTSTS_IPCSUM; 1596 if (m_head->m_pkthdr.csum_flags & CSUM_TCP) 1597 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1598 NGE_TXEXTSTS_TCPCSUM; 1599 if (m_head->m_pkthdr.csum_flags & CSUM_UDP) 1600 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1601 NGE_TXEXTSTS_UDPCSUM; 1602 } 1603 1604 if (m_head->m_flags & M_VLANTAG) { 1605 sc->nge_ldata->nge_tx_list[cur].nge_extsts |= 1606 (NGE_TXEXTSTS_VLANPKT|m_head->m_pkthdr.ether_vlantag); 1607 } 1608 1609 sc->nge_ldata->nge_tx_list[cur].nge_mbuf = m_head; 1610 sc->nge_ldata->nge_tx_list[cur].nge_ctl &= ~NGE_CMDSTS_MORE; 1611 sc->nge_ldata->nge_tx_list[*txidx].nge_ctl |= NGE_CMDSTS_OWN; 1612 sc->nge_cdata.nge_tx_cnt += cnt; 1613 *txidx = frag; 1614 1615 return(0); 1616 } 1617 1618 /* 1619 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1620 * to the mbuf data regions directly in the transmit lists. We also save a 1621 * copy of the pointers since the transmit list fragment pointers are 1622 * physical addresses. 1623 */ 1624 1625 static void 1626 nge_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 1627 { 1628 struct nge_softc *sc = ifp->if_softc; 1629 struct mbuf *m_head = NULL, *m_defragged; 1630 uint32_t idx; 1631 int need_trans; 1632 1633 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 1634 1635 if (!sc->nge_link) { 1636 ifq_purge(&ifp->if_snd); 1637 return; 1638 } 1639 1640 idx = sc->nge_cdata.nge_tx_prod; 1641 1642 if ((ifp->if_flags & IFF_RUNNING) == 0 || ifq_is_oactive(&ifp->if_snd)) 1643 return; 1644 1645 need_trans = 0; 1646 while (sc->nge_ldata->nge_tx_list[idx].nge_mbuf == NULL) { 1647 struct mbuf *m; 1648 int cnt; 1649 1650 m_defragged = NULL; 1651 m_head = ifq_dequeue(&ifp->if_snd); 1652 if (m_head == NULL) 1653 break; 1654 1655 again: 1656 cnt = 0; 1657 for (m = m_head; m != NULL; m = m->m_next) 1658 ++cnt; 1659 if ((NGE_TX_LIST_CNT - 1660 (sc->nge_cdata.nge_tx_cnt + cnt)) < 2) { 1661 if (m_defragged != NULL) { 1662 /* 1663 * Even after defragmentation, there 1664 * are still too many fragments, so 1665 * drop this packet. 1666 */ 1667 m_freem(m_head); 1668 ifq_set_oactive(&ifp->if_snd); 1669 break; 1670 } 1671 1672 m_defragged = m_defrag(m_head, MB_DONTWAIT); 1673 if (m_defragged == NULL) { 1674 m_freem(m_head); 1675 continue; 1676 } 1677 m_head = m_defragged; 1678 1679 /* Recount # of fragments */ 1680 goto again; 1681 } 1682 1683 nge_encap(sc, m_head, &idx); 1684 need_trans = 1; 1685 1686 ETHER_BPF_MTAP(ifp, m_head); 1687 } 1688 1689 if (!need_trans) 1690 return; 1691 1692 /* Transmit */ 1693 sc->nge_cdata.nge_tx_prod = idx; 1694 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_ENABLE); 1695 1696 /* 1697 * Set a timeout in case the chip goes out to lunch. 1698 */ 1699 ifp->if_timer = 5; 1700 } 1701 1702 static void 1703 nge_init(void *xsc) 1704 { 1705 struct nge_softc *sc = xsc; 1706 struct ifnet *ifp = &sc->arpcom.ac_if; 1707 struct mii_data *mii; 1708 1709 if (ifp->if_flags & IFF_RUNNING) { 1710 return; 1711 } 1712 1713 /* 1714 * Cancel pending I/O and free all RX/TX buffers. 1715 */ 1716 nge_stop(sc); 1717 callout_reset(&sc->nge_stat_timer, hz, nge_tick, sc); 1718 1719 if (sc->nge_tbi) 1720 mii = NULL; 1721 else 1722 mii = device_get_softc(sc->nge_miibus); 1723 1724 /* Set MAC address */ 1725 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR0); 1726 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1727 ((uint16_t *)sc->arpcom.ac_enaddr)[0]); 1728 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR1); 1729 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1730 ((uint16_t *)sc->arpcom.ac_enaddr)[1]); 1731 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR2); 1732 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1733 ((uint16_t *)sc->arpcom.ac_enaddr)[2]); 1734 1735 /* Init circular RX list. */ 1736 if (nge_list_rx_init(sc) == ENOBUFS) { 1737 kprintf("nge%d: initialization failed: no " 1738 "memory for rx buffers\n", sc->nge_unit); 1739 nge_stop(sc); 1740 return; 1741 } 1742 1743 /* 1744 * Init tx descriptors. 1745 */ 1746 nge_list_tx_init(sc); 1747 1748 /* 1749 * For the NatSemi chip, we have to explicitly enable the 1750 * reception of ARP frames, as well as turn on the 'perfect 1751 * match' filter where we store the station address, otherwise 1752 * we won't receive unicasts meant for this host. 1753 */ 1754 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ARP); 1755 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_PERFECT); 1756 1757 /* If we want promiscuous mode, set the allframes bit. */ 1758 if (ifp->if_flags & IFF_PROMISC) 1759 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLPHYS); 1760 else 1761 NGE_CLRBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLPHYS); 1762 1763 /* 1764 * Set the capture broadcast bit to capture broadcast frames. 1765 */ 1766 if (ifp->if_flags & IFF_BROADCAST) 1767 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_BROAD); 1768 else 1769 NGE_CLRBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_BROAD); 1770 1771 /* 1772 * Load the multicast filter. 1773 */ 1774 nge_setmulti(sc); 1775 1776 /* Turn the receive filter on */ 1777 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ENABLE); 1778 1779 /* 1780 * Load the address of the RX and TX lists. 1781 */ 1782 CSR_WRITE_4(sc, NGE_RX_LISTPTR, 1783 vtophys(&sc->nge_ldata->nge_rx_list[0])); 1784 CSR_WRITE_4(sc, NGE_TX_LISTPTR, 1785 vtophys(&sc->nge_ldata->nge_tx_list[0])); 1786 1787 /* Set RX configuration */ 1788 CSR_WRITE_4(sc, NGE_RX_CFG, NGE_RXCFG); 1789 /* 1790 * Enable hardware checksum validation for all IPv4 1791 * packets, do not reject packets with bad checksums. 1792 */ 1793 CSR_WRITE_4(sc, NGE_VLAN_IP_RXCTL, NGE_VIPRXCTL_IPCSUM_ENB); 1794 1795 /* 1796 * Tell the chip to detect and strip VLAN tag info from 1797 * received frames. The tag will be provided in the extsts 1798 * field in the RX descriptors. 1799 */ 1800 NGE_SETBIT(sc, NGE_VLAN_IP_RXCTL, 1801 NGE_VIPRXCTL_TAG_DETECT_ENB|NGE_VIPRXCTL_TAG_STRIP_ENB); 1802 1803 /* Set TX configuration */ 1804 CSR_WRITE_4(sc, NGE_TX_CFG, NGE_TXCFG); 1805 1806 /* 1807 * Enable TX IPv4 checksumming on a per-packet basis. 1808 */ 1809 CSR_WRITE_4(sc, NGE_VLAN_IP_TXCTL, NGE_VIPTXCTL_CSUM_PER_PKT); 1810 1811 /* 1812 * Tell the chip to insert VLAN tags on a per-packet basis as 1813 * dictated by the code in the frame encapsulation routine. 1814 */ 1815 NGE_SETBIT(sc, NGE_VLAN_IP_TXCTL, NGE_VIPTXCTL_TAG_PER_PKT); 1816 1817 /* Set full/half duplex mode. */ 1818 if (sc->nge_tbi) { 1819 if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 1820 == IFM_FDX) { 1821 NGE_SETBIT(sc, NGE_TX_CFG, 1822 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 1823 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1824 } else { 1825 NGE_CLRBIT(sc, NGE_TX_CFG, 1826 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 1827 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1828 } 1829 } else { 1830 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 1831 NGE_SETBIT(sc, NGE_TX_CFG, 1832 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 1833 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1834 } else { 1835 NGE_CLRBIT(sc, NGE_TX_CFG, 1836 (NGE_TXCFG_IGN_HBEAT | NGE_TXCFG_IGN_CARR)); 1837 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1838 } 1839 } 1840 1841 /* 1842 * Enable the delivery of PHY interrupts based on 1843 * link/speed/duplex status changes. Also enable the 1844 * extsts field in the DMA descriptors (needed for 1845 * TCP/IP checksum offload on transmit). 1846 */ 1847 NGE_SETBIT(sc, NGE_CFG, NGE_CFG_PHYINTR_SPD | 1848 NGE_CFG_PHYINTR_LNK | NGE_CFG_PHYINTR_DUP | NGE_CFG_EXTSTS_ENB); 1849 1850 /* 1851 * Configure interrupt holdoff (moderation). We can 1852 * have the chip delay interrupt delivery for a certain 1853 * period. Units are in 100us, and the max setting 1854 * is 25500us (0xFF x 100us). Default is a 100us holdoff. 1855 */ 1856 CSR_WRITE_4(sc, NGE_IHR, 0x01); 1857 1858 /* 1859 * Enable interrupts. 1860 */ 1861 CSR_WRITE_4(sc, NGE_IMR, NGE_INTRS); 1862 #ifdef IFPOLL_ENABLE 1863 /* 1864 * ... only enable interrupts if we are not polling, make sure 1865 * they are off otherwise. 1866 */ 1867 if (ifp->if_flags & IFF_NPOLLING) { 1868 CSR_WRITE_4(sc, NGE_IER, 0); 1869 sc->nge_npoll.ifpc_stcount = 0; 1870 } else 1871 #endif /* IFPOLL_ENABLE */ 1872 CSR_WRITE_4(sc, NGE_IER, 1); 1873 1874 /* Enable receiver and transmitter. */ 1875 NGE_CLRBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE | NGE_CSR_RX_DISABLE); 1876 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1877 1878 nge_ifmedia_upd(ifp); 1879 1880 ifp->if_flags |= IFF_RUNNING; 1881 ifq_clr_oactive(&ifp->if_snd); 1882 } 1883 1884 /* 1885 * Set media options. 1886 */ 1887 static int 1888 nge_ifmedia_upd(struct ifnet *ifp) 1889 { 1890 struct nge_softc *sc = ifp->if_softc; 1891 struct mii_data *mii; 1892 1893 if (sc->nge_tbi) { 1894 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 1895 == IFM_AUTO) { 1896 CSR_WRITE_4(sc, NGE_TBI_ANAR, 1897 CSR_READ_4(sc, NGE_TBI_ANAR) 1898 | NGE_TBIANAR_HDX | NGE_TBIANAR_FDX 1899 | NGE_TBIANAR_PS1 | NGE_TBIANAR_PS2); 1900 CSR_WRITE_4(sc, NGE_TBI_BMCR, NGE_TBIBMCR_ENABLE_ANEG 1901 | NGE_TBIBMCR_RESTART_ANEG); 1902 CSR_WRITE_4(sc, NGE_TBI_BMCR, NGE_TBIBMCR_ENABLE_ANEG); 1903 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media 1904 & IFM_GMASK) == IFM_FDX) { 1905 NGE_SETBIT(sc, NGE_TX_CFG, 1906 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1907 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1908 1909 CSR_WRITE_4(sc, NGE_TBI_ANAR, 0); 1910 CSR_WRITE_4(sc, NGE_TBI_BMCR, 0); 1911 } else { 1912 NGE_CLRBIT(sc, NGE_TX_CFG, 1913 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1914 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1915 1916 CSR_WRITE_4(sc, NGE_TBI_ANAR, 0); 1917 CSR_WRITE_4(sc, NGE_TBI_BMCR, 0); 1918 } 1919 1920 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1921 & ~NGE_GPIO_GP3_OUT); 1922 } else { 1923 mii = device_get_softc(sc->nge_miibus); 1924 sc->nge_link = 0; 1925 if (mii->mii_instance) { 1926 struct mii_softc *miisc; 1927 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL; 1928 miisc = LIST_NEXT(miisc, mii_list)) 1929 mii_phy_reset(miisc); 1930 } 1931 mii_mediachg(mii); 1932 } 1933 1934 return(0); 1935 } 1936 1937 /* 1938 * Report current media status. 1939 */ 1940 static void 1941 nge_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 1942 { 1943 struct nge_softc *sc = ifp->if_softc; 1944 struct mii_data *mii; 1945 1946 if (sc->nge_tbi) { 1947 ifmr->ifm_status = IFM_AVALID; 1948 ifmr->ifm_active = IFM_ETHER; 1949 1950 if (CSR_READ_4(sc, NGE_TBI_BMSR) & NGE_TBIBMSR_ANEG_DONE) 1951 ifmr->ifm_status |= IFM_ACTIVE; 1952 if (CSR_READ_4(sc, NGE_TBI_BMCR) & NGE_TBIBMCR_LOOPBACK) 1953 ifmr->ifm_active |= IFM_LOOP; 1954 if (!(CSR_READ_4(sc, NGE_TBI_BMSR) & NGE_TBIBMSR_ANEG_DONE)) { 1955 ifmr->ifm_active |= IFM_NONE; 1956 ifmr->ifm_status = 0; 1957 return; 1958 } 1959 ifmr->ifm_active |= IFM_1000_SX; 1960 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 1961 == IFM_AUTO) { 1962 ifmr->ifm_active |= IFM_AUTO; 1963 if (CSR_READ_4(sc, NGE_TBI_ANLPAR) 1964 & NGE_TBIANAR_FDX) { 1965 ifmr->ifm_active |= IFM_FDX; 1966 }else if (CSR_READ_4(sc, NGE_TBI_ANLPAR) 1967 & NGE_TBIANAR_HDX) { 1968 ifmr->ifm_active |= IFM_HDX; 1969 } 1970 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 1971 == IFM_FDX) 1972 ifmr->ifm_active |= IFM_FDX; 1973 else 1974 ifmr->ifm_active |= IFM_HDX; 1975 1976 } else { 1977 mii = device_get_softc(sc->nge_miibus); 1978 mii_pollstat(mii); 1979 ifmr->ifm_active = mii->mii_media_active; 1980 ifmr->ifm_status = mii->mii_media_status; 1981 } 1982 } 1983 1984 static int 1985 nge_ioctl(struct ifnet *ifp, u_long command, caddr_t data, struct ucred *cr) 1986 { 1987 struct nge_softc *sc = ifp->if_softc; 1988 struct ifreq *ifr = (struct ifreq *) data; 1989 struct mii_data *mii; 1990 int error = 0; 1991 1992 switch(command) { 1993 case SIOCSIFMTU: 1994 if (ifr->ifr_mtu > NGE_JUMBO_MTU) { 1995 error = EINVAL; 1996 } else { 1997 ifp->if_mtu = ifr->ifr_mtu; 1998 /* 1999 * Workaround: if the MTU is larger than 2000 * 8152 (TX FIFO size minus 64 minus 18), turn off 2001 * TX checksum offloading. 2002 */ 2003 if (ifr->ifr_mtu >= 8152) 2004 ifp->if_hwassist = 0; 2005 else 2006 ifp->if_hwassist = NGE_CSUM_FEATURES; 2007 } 2008 break; 2009 case SIOCSIFFLAGS: 2010 if (ifp->if_flags & IFF_UP) { 2011 if (ifp->if_flags & IFF_RUNNING && 2012 ifp->if_flags & IFF_PROMISC && 2013 !(sc->nge_if_flags & IFF_PROMISC)) { 2014 NGE_SETBIT(sc, NGE_RXFILT_CTL, 2015 NGE_RXFILTCTL_ALLPHYS| 2016 NGE_RXFILTCTL_ALLMULTI); 2017 } else if (ifp->if_flags & IFF_RUNNING && 2018 !(ifp->if_flags & IFF_PROMISC) && 2019 sc->nge_if_flags & IFF_PROMISC) { 2020 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 2021 NGE_RXFILTCTL_ALLPHYS); 2022 if (!(ifp->if_flags & IFF_ALLMULTI)) 2023 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 2024 NGE_RXFILTCTL_ALLMULTI); 2025 } else { 2026 ifp->if_flags &= ~IFF_RUNNING; 2027 nge_init(sc); 2028 } 2029 } else { 2030 if (ifp->if_flags & IFF_RUNNING) 2031 nge_stop(sc); 2032 } 2033 sc->nge_if_flags = ifp->if_flags; 2034 error = 0; 2035 break; 2036 case SIOCADDMULTI: 2037 case SIOCDELMULTI: 2038 nge_setmulti(sc); 2039 error = 0; 2040 break; 2041 case SIOCGIFMEDIA: 2042 case SIOCSIFMEDIA: 2043 if (sc->nge_tbi) { 2044 error = ifmedia_ioctl(ifp, ifr, &sc->nge_ifmedia, 2045 command); 2046 } else { 2047 mii = device_get_softc(sc->nge_miibus); 2048 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, 2049 command); 2050 } 2051 break; 2052 default: 2053 error = ether_ioctl(ifp, command, data); 2054 break; 2055 } 2056 return(error); 2057 } 2058 2059 static void 2060 nge_watchdog(struct ifnet *ifp) 2061 { 2062 struct nge_softc *sc = ifp->if_softc; 2063 2064 IFNET_STAT_INC(ifp, oerrors, 1); 2065 kprintf("nge%d: watchdog timeout\n", sc->nge_unit); 2066 2067 nge_stop(sc); 2068 nge_reset(sc); 2069 ifp->if_flags &= ~IFF_RUNNING; 2070 nge_init(sc); 2071 2072 if (!ifq_is_empty(&ifp->if_snd)) 2073 if_devstart(ifp); 2074 } 2075 2076 /* 2077 * Stop the adapter and free any mbufs allocated to the 2078 * RX and TX lists. 2079 */ 2080 static void 2081 nge_stop(struct nge_softc *sc) 2082 { 2083 struct ifnet *ifp = &sc->arpcom.ac_if; 2084 struct ifmedia_entry *ifm; 2085 struct mii_data *mii; 2086 int i, itmp, mtmp, dtmp; 2087 2088 ifp->if_timer = 0; 2089 if (sc->nge_tbi) 2090 mii = NULL; 2091 else 2092 mii = device_get_softc(sc->nge_miibus); 2093 2094 callout_stop(&sc->nge_stat_timer); 2095 CSR_WRITE_4(sc, NGE_IER, 0); 2096 CSR_WRITE_4(sc, NGE_IMR, 0); 2097 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE|NGE_CSR_RX_DISABLE); 2098 DELAY(1000); 2099 CSR_WRITE_4(sc, NGE_TX_LISTPTR, 0); 2100 CSR_WRITE_4(sc, NGE_RX_LISTPTR, 0); 2101 2102 /* 2103 * Isolate/power down the PHY, but leave the media selection 2104 * unchanged so that things will be put back to normal when 2105 * we bring the interface back up. 2106 */ 2107 itmp = ifp->if_flags; 2108 ifp->if_flags |= IFF_UP; 2109 2110 if (sc->nge_tbi) 2111 ifm = sc->nge_ifmedia.ifm_cur; 2112 else 2113 ifm = mii->mii_media.ifm_cur; 2114 2115 mtmp = ifm->ifm_media; 2116 dtmp = ifm->ifm_data; 2117 ifm->ifm_media = IFM_ETHER|IFM_NONE; 2118 ifm->ifm_data = MII_MEDIA_NONE; 2119 2120 if (!sc->nge_tbi) 2121 mii_mediachg(mii); 2122 ifm->ifm_media = mtmp; 2123 ifm->ifm_data = dtmp; 2124 ifp->if_flags = itmp; 2125 2126 sc->nge_link = 0; 2127 2128 /* 2129 * Free data in the RX lists. 2130 */ 2131 for (i = 0; i < NGE_RX_LIST_CNT; i++) { 2132 if (sc->nge_ldata->nge_rx_list[i].nge_mbuf != NULL) { 2133 m_freem(sc->nge_ldata->nge_rx_list[i].nge_mbuf); 2134 sc->nge_ldata->nge_rx_list[i].nge_mbuf = NULL; 2135 } 2136 } 2137 bzero(&sc->nge_ldata->nge_rx_list, 2138 sizeof(sc->nge_ldata->nge_rx_list)); 2139 2140 /* 2141 * Free the TX list buffers. 2142 */ 2143 for (i = 0; i < NGE_TX_LIST_CNT; i++) { 2144 if (sc->nge_ldata->nge_tx_list[i].nge_mbuf != NULL) { 2145 m_freem(sc->nge_ldata->nge_tx_list[i].nge_mbuf); 2146 sc->nge_ldata->nge_tx_list[i].nge_mbuf = NULL; 2147 } 2148 } 2149 2150 bzero(&sc->nge_ldata->nge_tx_list, 2151 sizeof(sc->nge_ldata->nge_tx_list)); 2152 2153 ifp->if_flags &= ~IFF_RUNNING; 2154 ifq_clr_oactive(&ifp->if_snd); 2155 } 2156 2157 /* 2158 * Stop all chip I/O so that the kernel's probe routines don't 2159 * get confused by errant DMAs when rebooting. 2160 */ 2161 static void 2162 nge_shutdown(device_t dev) 2163 { 2164 struct nge_softc *sc = device_get_softc(dev); 2165 struct ifnet *ifp = &sc->arpcom.ac_if; 2166 2167 lwkt_serialize_enter(ifp->if_serializer); 2168 nge_reset(sc); 2169 nge_stop(sc); 2170 lwkt_serialize_exit(ifp->if_serializer); 2171 } 2172
Cache object: f64b46974ca5377c0daee80fc2ffc25c
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