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 * $DragonFly: src/sys/dev/netif/nge/if_nge.c,v 1.15 2004/09/15 00:06:16 joerg Exp $ 35 * 36 * $FreeBSD: src/sys/dev/nge/if_nge.c,v 1.13.2.13 2003/02/05 22:03:57 mbr Exp $ 37 */ 38 39 /* 40 * National Semiconductor DP83820/DP83821 gigabit ethernet driver 41 * for FreeBSD. Datasheets are available from: 42 * 43 * http://www.national.com/ds/DP/DP83820.pdf 44 * http://www.national.com/ds/DP/DP83821.pdf 45 * 46 * These chips are used on several low cost gigabit ethernet NICs 47 * sold by D-Link, Addtron, SMC and Asante. Both parts are 48 * virtually the same, except the 83820 is a 64-bit/32-bit part, 49 * while the 83821 is 32-bit only. 50 * 51 * Many cards also use National gigE transceivers, such as the 52 * DP83891, DP83861 and DP83862 gigPHYTER parts. The DP83861 datasheet 53 * contains a full register description that applies to all of these 54 * components: 55 * 56 * http://www.national.com/ds/DP/DP83861.pdf 57 * 58 * Written by Bill Paul <wpaul@bsdi.com> 59 * BSDi Open Source Solutions 60 */ 61 62 /* 63 * The NatSemi DP83820 and 83821 controllers are enhanced versions 64 * of the NatSemi MacPHYTER 10/100 devices. They support 10, 100 65 * and 1000Mbps speeds with 1000baseX (ten bit interface), MII and GMII 66 * ports. Other features include 8K TX FIFO and 32K RX FIFO, TCP/IP 67 * hardware checksum offload (IPv4 only), VLAN tagging and filtering, 68 * priority TX and RX queues, a 2048 bit multicast hash filter, 4 RX pattern 69 * matching buffers, one perfect address filter buffer and interrupt 70 * moderation. The 83820 supports both 64-bit and 32-bit addressing 71 * and data transfers: the 64-bit support can be toggled on or off 72 * via software. This affects the size of certain fields in the DMA 73 * descriptors. 74 * 75 * There are two bugs/misfeatures in the 83820/83821 that I have 76 * discovered so far: 77 * 78 * - Receive buffers must be aligned on 64-bit boundaries, which means 79 * you must resort to copying data in order to fix up the payload 80 * alignment. 81 * 82 * - In order to transmit jumbo frames larger than 8170 bytes, you have 83 * to turn off transmit checksum offloading, because the chip can't 84 * compute the checksum on an outgoing frame unless it fits entirely 85 * within the TX FIFO, which is only 8192 bytes in size. If you have 86 * TX checksum offload enabled and you transmit attempt to transmit a 87 * frame larger than 8170 bytes, the transmitter will wedge. 88 * 89 * To work around the latter problem, TX checksum offload is disabled 90 * if the user selects an MTU larger than 8152 (8170 - 18). 91 */ 92 93 #include <sys/param.h> 94 #include <sys/systm.h> 95 #include <sys/sockio.h> 96 #include <sys/mbuf.h> 97 #include <sys/malloc.h> 98 #include <sys/kernel.h> 99 #include <sys/socket.h> 100 101 #include <net/if.h> 102 #include <net/if_arp.h> 103 #include <net/ethernet.h> 104 #include <net/if_dl.h> 105 #include <net/if_media.h> 106 #include <net/if_types.h> 107 #include <net/vlan/if_vlan_var.h> 108 109 #include <net/bpf.h> 110 111 #include <vm/vm.h> /* for vtophys */ 112 #include <vm/pmap.h> /* for vtophys */ 113 #include <machine/clock.h> /* for DELAY */ 114 #include <machine/bus_pio.h> 115 #include <machine/bus_memio.h> 116 #include <machine/bus.h> 117 #include <machine/resource.h> 118 #include <sys/bus.h> 119 #include <sys/rman.h> 120 121 #include "../mii_layer/mii.h" 122 #include "../mii_layer/miivar.h" 123 124 #include <bus/pci/pcireg.h> 125 #include <bus/pci/pcivar.h> 126 127 #define NGE_USEIOSPACE 128 129 #include "if_ngereg.h" 130 131 132 /* "controller miibus0" required. See GENERIC if you get errors here. */ 133 #include "miibus_if.h" 134 135 #define NGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 136 137 /* 138 * Various supported device vendors/types and their names. 139 */ 140 static struct nge_type nge_devs[] = { 141 { NGE_VENDORID, NGE_DEVICEID, 142 "National Semiconductor Gigabit Ethernet" }, 143 { 0, 0, NULL } 144 }; 145 146 static int nge_probe (device_t); 147 static int nge_attach (device_t); 148 static int nge_detach (device_t); 149 150 static int nge_alloc_jumbo_mem (struct nge_softc *); 151 static void nge_free_jumbo_mem (struct nge_softc *); 152 static void *nge_jalloc (struct nge_softc *); 153 static void nge_jfree (caddr_t, u_int); 154 static void nge_jref (caddr_t, u_int); 155 156 static int nge_newbuf (struct nge_softc *, 157 struct nge_desc *, struct mbuf *); 158 static int nge_encap (struct nge_softc *, 159 struct mbuf *, u_int32_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 *); 165 static int nge_ioctl (struct ifnet *, u_long, caddr_t, 166 struct ucred *); 167 static void nge_init (void *); 168 static void nge_stop (struct nge_softc *); 169 static void nge_watchdog (struct ifnet *); 170 static void nge_shutdown (device_t); 171 static int nge_ifmedia_upd (struct ifnet *); 172 static void nge_ifmedia_sts (struct ifnet *, struct ifmediareq *); 173 174 static void nge_delay (struct nge_softc *); 175 static void nge_eeprom_idle (struct nge_softc *); 176 static void nge_eeprom_putbyte (struct nge_softc *, int); 177 static void nge_eeprom_getword (struct nge_softc *, int, u_int16_t *); 178 static void nge_read_eeprom (struct nge_softc *, caddr_t, int, int, int); 179 180 static void nge_mii_sync (struct nge_softc *); 181 static void nge_mii_send (struct nge_softc *, u_int32_t, int); 182 static int nge_mii_readreg (struct nge_softc *, struct nge_mii_frame *); 183 static int nge_mii_writereg (struct nge_softc *, struct nge_mii_frame *); 184 185 static int nge_miibus_readreg (device_t, int, int); 186 static int nge_miibus_writereg (device_t, int, int, int); 187 static void nge_miibus_statchg (device_t); 188 189 static void nge_setmulti (struct nge_softc *); 190 static u_int32_t nge_crc (struct nge_softc *, caddr_t); 191 static void nge_reset (struct nge_softc *); 192 static int nge_list_rx_init (struct nge_softc *); 193 static int nge_list_tx_init (struct nge_softc *); 194 195 #ifdef NGE_USEIOSPACE 196 #define NGE_RES SYS_RES_IOPORT 197 #define NGE_RID NGE_PCI_LOIO 198 #else 199 #define NGE_RES SYS_RES_MEMORY 200 #define NGE_RID NGE_PCI_LOMEM 201 #endif 202 203 static device_method_t nge_methods[] = { 204 /* Device interface */ 205 DEVMETHOD(device_probe, nge_probe), 206 DEVMETHOD(device_attach, nge_attach), 207 DEVMETHOD(device_detach, nge_detach), 208 DEVMETHOD(device_shutdown, nge_shutdown), 209 210 /* bus interface */ 211 DEVMETHOD(bus_print_child, bus_generic_print_child), 212 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 213 214 /* MII interface */ 215 DEVMETHOD(miibus_readreg, nge_miibus_readreg), 216 DEVMETHOD(miibus_writereg, nge_miibus_writereg), 217 DEVMETHOD(miibus_statchg, nge_miibus_statchg), 218 219 { 0, 0 } 220 }; 221 222 static driver_t nge_driver = { 223 "nge", 224 nge_methods, 225 sizeof(struct nge_softc) 226 }; 227 228 static devclass_t nge_devclass; 229 230 DECLARE_DUMMY_MODULE(if_nge); 231 MODULE_DEPEND(if_nge, miibus, 1, 1, 1); 232 DRIVER_MODULE(if_nge, pci, nge_driver, nge_devclass, 0, 0); 233 DRIVER_MODULE(miibus, nge, miibus_driver, miibus_devclass, 0, 0); 234 235 #define NGE_SETBIT(sc, reg, x) \ 236 CSR_WRITE_4(sc, reg, \ 237 CSR_READ_4(sc, reg) | (x)) 238 239 #define NGE_CLRBIT(sc, reg, x) \ 240 CSR_WRITE_4(sc, reg, \ 241 CSR_READ_4(sc, reg) & ~(x)) 242 243 #define SIO_SET(x) \ 244 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) | x) 245 246 #define SIO_CLR(x) \ 247 CSR_WRITE_4(sc, NGE_MEAR, CSR_READ_4(sc, NGE_MEAR) & ~x) 248 249 static void nge_delay(sc) 250 struct nge_softc *sc; 251 { 252 int idx; 253 254 for (idx = (300 / 33) + 1; idx > 0; idx--) 255 CSR_READ_4(sc, NGE_CSR); 256 257 return; 258 } 259 260 static void nge_eeprom_idle(sc) 261 struct nge_softc *sc; 262 { 263 int i; 264 265 SIO_SET(NGE_MEAR_EE_CSEL); 266 nge_delay(sc); 267 SIO_SET(NGE_MEAR_EE_CLK); 268 nge_delay(sc); 269 270 for (i = 0; i < 25; i++) { 271 SIO_CLR(NGE_MEAR_EE_CLK); 272 nge_delay(sc); 273 SIO_SET(NGE_MEAR_EE_CLK); 274 nge_delay(sc); 275 } 276 277 SIO_CLR(NGE_MEAR_EE_CLK); 278 nge_delay(sc); 279 SIO_CLR(NGE_MEAR_EE_CSEL); 280 nge_delay(sc); 281 CSR_WRITE_4(sc, NGE_MEAR, 0x00000000); 282 283 return; 284 } 285 286 /* 287 * Send a read command and address to the EEPROM, check for ACK. 288 */ 289 static void nge_eeprom_putbyte(sc, addr) 290 struct nge_softc *sc; 291 int addr; 292 { 293 int d, i; 294 295 d = addr | NGE_EECMD_READ; 296 297 /* 298 * Feed in each bit and stobe the clock. 299 */ 300 for (i = 0x400; i; i >>= 1) { 301 if (d & i) { 302 SIO_SET(NGE_MEAR_EE_DIN); 303 } else { 304 SIO_CLR(NGE_MEAR_EE_DIN); 305 } 306 nge_delay(sc); 307 SIO_SET(NGE_MEAR_EE_CLK); 308 nge_delay(sc); 309 SIO_CLR(NGE_MEAR_EE_CLK); 310 nge_delay(sc); 311 } 312 313 return; 314 } 315 316 /* 317 * Read a word of data stored in the EEPROM at address 'addr.' 318 */ 319 static void nge_eeprom_getword(sc, addr, dest) 320 struct nge_softc *sc; 321 int addr; 322 u_int16_t *dest; 323 { 324 int i; 325 u_int16_t word = 0; 326 327 /* Force EEPROM to idle state. */ 328 nge_eeprom_idle(sc); 329 330 /* Enter EEPROM access mode. */ 331 nge_delay(sc); 332 SIO_CLR(NGE_MEAR_EE_CLK); 333 nge_delay(sc); 334 SIO_SET(NGE_MEAR_EE_CSEL); 335 nge_delay(sc); 336 337 /* 338 * Send address of word we want to read. 339 */ 340 nge_eeprom_putbyte(sc, addr); 341 342 /* 343 * Start reading bits from EEPROM. 344 */ 345 for (i = 0x8000; i; i >>= 1) { 346 SIO_SET(NGE_MEAR_EE_CLK); 347 nge_delay(sc); 348 if (CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_EE_DOUT) 349 word |= i; 350 nge_delay(sc); 351 SIO_CLR(NGE_MEAR_EE_CLK); 352 nge_delay(sc); 353 } 354 355 /* Turn off EEPROM access mode. */ 356 nge_eeprom_idle(sc); 357 358 *dest = word; 359 360 return; 361 } 362 363 /* 364 * Read a sequence of words from the EEPROM. 365 */ 366 static void nge_read_eeprom(sc, dest, off, cnt, swap) 367 struct nge_softc *sc; 368 caddr_t dest; 369 int off; 370 int cnt; 371 int swap; 372 { 373 int i; 374 u_int16_t word = 0, *ptr; 375 376 for (i = 0; i < cnt; i++) { 377 nge_eeprom_getword(sc, off + i, &word); 378 ptr = (u_int16_t *)(dest + (i * 2)); 379 if (swap) 380 *ptr = ntohs(word); 381 else 382 *ptr = word; 383 } 384 385 return; 386 } 387 388 /* 389 * Sync the PHYs by setting data bit and strobing the clock 32 times. 390 */ 391 static void nge_mii_sync(sc) 392 struct nge_softc *sc; 393 { 394 int i; 395 396 SIO_SET(NGE_MEAR_MII_DIR|NGE_MEAR_MII_DATA); 397 398 for (i = 0; i < 32; i++) { 399 SIO_SET(NGE_MEAR_MII_CLK); 400 DELAY(1); 401 SIO_CLR(NGE_MEAR_MII_CLK); 402 DELAY(1); 403 } 404 405 return; 406 } 407 408 /* 409 * Clock a series of bits through the MII. 410 */ 411 static void nge_mii_send(sc, bits, cnt) 412 struct nge_softc *sc; 413 u_int32_t bits; 414 int cnt; 415 { 416 int i; 417 418 SIO_CLR(NGE_MEAR_MII_CLK); 419 420 for (i = (0x1 << (cnt - 1)); i; i >>= 1) { 421 if (bits & i) { 422 SIO_SET(NGE_MEAR_MII_DATA); 423 } else { 424 SIO_CLR(NGE_MEAR_MII_DATA); 425 } 426 DELAY(1); 427 SIO_CLR(NGE_MEAR_MII_CLK); 428 DELAY(1); 429 SIO_SET(NGE_MEAR_MII_CLK); 430 } 431 } 432 433 /* 434 * Read an PHY register through the MII. 435 */ 436 static int nge_mii_readreg(sc, frame) 437 struct nge_softc *sc; 438 struct nge_mii_frame *frame; 439 440 { 441 int i, ack, s; 442 443 s = splimp(); 444 445 /* 446 * Set up frame for RX. 447 */ 448 frame->mii_stdelim = NGE_MII_STARTDELIM; 449 frame->mii_opcode = NGE_MII_READOP; 450 frame->mii_turnaround = 0; 451 frame->mii_data = 0; 452 453 CSR_WRITE_4(sc, NGE_MEAR, 0); 454 455 /* 456 * Turn on data xmit. 457 */ 458 SIO_SET(NGE_MEAR_MII_DIR); 459 460 nge_mii_sync(sc); 461 462 /* 463 * Send command/address info. 464 */ 465 nge_mii_send(sc, frame->mii_stdelim, 2); 466 nge_mii_send(sc, frame->mii_opcode, 2); 467 nge_mii_send(sc, frame->mii_phyaddr, 5); 468 nge_mii_send(sc, frame->mii_regaddr, 5); 469 470 /* Idle bit */ 471 SIO_CLR((NGE_MEAR_MII_CLK|NGE_MEAR_MII_DATA)); 472 DELAY(1); 473 SIO_SET(NGE_MEAR_MII_CLK); 474 DELAY(1); 475 476 /* Turn off xmit. */ 477 SIO_CLR(NGE_MEAR_MII_DIR); 478 /* Check for ack */ 479 SIO_CLR(NGE_MEAR_MII_CLK); 480 DELAY(1); 481 ack = CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_MII_DATA; 482 SIO_SET(NGE_MEAR_MII_CLK); 483 DELAY(1); 484 485 /* 486 * Now try reading data bits. If the ack failed, we still 487 * need to clock through 16 cycles to keep the PHY(s) in sync. 488 */ 489 if (ack) { 490 for(i = 0; i < 16; i++) { 491 SIO_CLR(NGE_MEAR_MII_CLK); 492 DELAY(1); 493 SIO_SET(NGE_MEAR_MII_CLK); 494 DELAY(1); 495 } 496 goto fail; 497 } 498 499 for (i = 0x8000; i; i >>= 1) { 500 SIO_CLR(NGE_MEAR_MII_CLK); 501 DELAY(1); 502 if (!ack) { 503 if (CSR_READ_4(sc, NGE_MEAR) & NGE_MEAR_MII_DATA) 504 frame->mii_data |= i; 505 DELAY(1); 506 } 507 SIO_SET(NGE_MEAR_MII_CLK); 508 DELAY(1); 509 } 510 511 fail: 512 513 SIO_CLR(NGE_MEAR_MII_CLK); 514 DELAY(1); 515 SIO_SET(NGE_MEAR_MII_CLK); 516 DELAY(1); 517 518 splx(s); 519 520 if (ack) 521 return(1); 522 return(0); 523 } 524 525 /* 526 * Write to a PHY register through the MII. 527 */ 528 static int nge_mii_writereg(sc, frame) 529 struct nge_softc *sc; 530 struct nge_mii_frame *frame; 531 532 { 533 int s; 534 535 s = splimp(); 536 /* 537 * Set up frame for TX. 538 */ 539 540 frame->mii_stdelim = NGE_MII_STARTDELIM; 541 frame->mii_opcode = NGE_MII_WRITEOP; 542 frame->mii_turnaround = NGE_MII_TURNAROUND; 543 544 /* 545 * Turn on data output. 546 */ 547 SIO_SET(NGE_MEAR_MII_DIR); 548 549 nge_mii_sync(sc); 550 551 nge_mii_send(sc, frame->mii_stdelim, 2); 552 nge_mii_send(sc, frame->mii_opcode, 2); 553 nge_mii_send(sc, frame->mii_phyaddr, 5); 554 nge_mii_send(sc, frame->mii_regaddr, 5); 555 nge_mii_send(sc, frame->mii_turnaround, 2); 556 nge_mii_send(sc, frame->mii_data, 16); 557 558 /* Idle bit. */ 559 SIO_SET(NGE_MEAR_MII_CLK); 560 DELAY(1); 561 SIO_CLR(NGE_MEAR_MII_CLK); 562 DELAY(1); 563 564 /* 565 * Turn off xmit. 566 */ 567 SIO_CLR(NGE_MEAR_MII_DIR); 568 569 splx(s); 570 571 return(0); 572 } 573 574 static int nge_miibus_readreg(dev, phy, reg) 575 device_t dev; 576 int phy, reg; 577 { 578 struct nge_softc *sc; 579 struct nge_mii_frame frame; 580 581 sc = device_get_softc(dev); 582 583 bzero((char *)&frame, sizeof(frame)); 584 585 frame.mii_phyaddr = phy; 586 frame.mii_regaddr = reg; 587 nge_mii_readreg(sc, &frame); 588 589 return(frame.mii_data); 590 } 591 592 static int nge_miibus_writereg(dev, phy, reg, data) 593 device_t dev; 594 int phy, reg, data; 595 { 596 struct nge_softc *sc; 597 struct nge_mii_frame frame; 598 599 sc = device_get_softc(dev); 600 601 bzero((char *)&frame, sizeof(frame)); 602 603 frame.mii_phyaddr = phy; 604 frame.mii_regaddr = reg; 605 frame.mii_data = data; 606 nge_mii_writereg(sc, &frame); 607 608 return(0); 609 } 610 611 static void nge_miibus_statchg(dev) 612 device_t dev; 613 { 614 int status; 615 struct nge_softc *sc; 616 struct mii_data *mii; 617 618 sc = device_get_softc(dev); 619 if (sc->nge_tbi) { 620 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 621 == IFM_AUTO) { 622 status = CSR_READ_4(sc, NGE_TBI_ANLPAR); 623 if (status == 0 || status & NGE_TBIANAR_FDX) { 624 NGE_SETBIT(sc, NGE_TX_CFG, 625 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 626 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 627 } else { 628 NGE_CLRBIT(sc, NGE_TX_CFG, 629 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 630 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 631 } 632 633 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 634 != IFM_FDX) { 635 NGE_CLRBIT(sc, NGE_TX_CFG, 636 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 637 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 638 } else { 639 NGE_SETBIT(sc, NGE_TX_CFG, 640 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 641 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 642 } 643 } else { 644 mii = device_get_softc(sc->nge_miibus); 645 646 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 647 NGE_SETBIT(sc, NGE_TX_CFG, 648 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 649 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 650 } else { 651 NGE_CLRBIT(sc, NGE_TX_CFG, 652 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 653 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 654 } 655 656 /* If we have a 1000Mbps link, set the mode_1000 bit. */ 657 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_TX || 658 IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_SX) { 659 NGE_SETBIT(sc, NGE_CFG, NGE_CFG_MODE_1000); 660 } else { 661 NGE_CLRBIT(sc, NGE_CFG, NGE_CFG_MODE_1000); 662 } 663 } 664 return; 665 } 666 667 static u_int32_t nge_crc(sc, addr) 668 struct nge_softc *sc; 669 caddr_t addr; 670 { 671 u_int32_t crc, carry; 672 int i, j; 673 u_int8_t c; 674 675 /* Compute CRC for the address value. */ 676 crc = 0xFFFFFFFF; /* initial value */ 677 678 for (i = 0; i < 6; i++) { 679 c = *(addr + i); 680 for (j = 0; j < 8; j++) { 681 carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); 682 crc <<= 1; 683 c >>= 1; 684 if (carry) 685 crc = (crc ^ 0x04c11db6) | carry; 686 } 687 } 688 689 /* 690 * return the filter bit position 691 */ 692 693 return((crc >> 21) & 0x00000FFF); 694 } 695 696 static void nge_setmulti(sc) 697 struct nge_softc *sc; 698 { 699 struct ifnet *ifp; 700 struct ifmultiaddr *ifma; 701 u_int32_t h = 0, i, filtsave; 702 int bit, index; 703 704 ifp = &sc->arpcom.ac_if; 705 706 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 707 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 708 NGE_RXFILTCTL_MCHASH|NGE_RXFILTCTL_UCHASH); 709 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLMULTI); 710 return; 711 } 712 713 /* 714 * We have to explicitly enable the multicast hash table 715 * on the NatSemi chip if we want to use it, which we do. 716 * We also have to tell it that we don't want to use the 717 * hash table for matching unicast addresses. 718 */ 719 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_MCHASH); 720 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 721 NGE_RXFILTCTL_ALLMULTI|NGE_RXFILTCTL_UCHASH); 722 723 filtsave = CSR_READ_4(sc, NGE_RXFILT_CTL); 724 725 /* first, zot all the existing hash bits */ 726 for (i = 0; i < NGE_MCAST_FILTER_LEN; i += 2) { 727 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_MCAST_LO + i); 728 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 0); 729 } 730 731 /* 732 * From the 11 bits returned by the crc routine, the top 7 733 * bits represent the 16-bit word in the mcast hash table 734 * that needs to be updated, and the lower 4 bits represent 735 * which bit within that byte needs to be set. 736 */ 737 LIST_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 738 if (ifma->ifma_addr->sa_family != AF_LINK) 739 continue; 740 h = nge_crc(sc, LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 741 index = (h >> 4) & 0x7F; 742 bit = h & 0xF; 743 CSR_WRITE_4(sc, NGE_RXFILT_CTL, 744 NGE_FILTADDR_MCAST_LO + (index * 2)); 745 NGE_SETBIT(sc, NGE_RXFILT_DATA, (1 << bit)); 746 } 747 748 CSR_WRITE_4(sc, NGE_RXFILT_CTL, filtsave); 749 750 return; 751 } 752 753 static void nge_reset(sc) 754 struct nge_softc *sc; 755 { 756 int i; 757 758 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RESET); 759 760 for (i = 0; i < NGE_TIMEOUT; i++) { 761 if (!(CSR_READ_4(sc, NGE_CSR) & NGE_CSR_RESET)) 762 break; 763 } 764 765 if (i == NGE_TIMEOUT) 766 printf("nge%d: reset never completed\n", sc->nge_unit); 767 768 /* Wait a little while for the chip to get its brains in order. */ 769 DELAY(1000); 770 771 /* 772 * If this is a NetSemi chip, make sure to clear 773 * PME mode. 774 */ 775 CSR_WRITE_4(sc, NGE_CLKRUN, NGE_CLKRUN_PMESTS); 776 CSR_WRITE_4(sc, NGE_CLKRUN, 0); 777 778 return; 779 } 780 781 /* 782 * Probe for an NatSemi chip. Check the PCI vendor and device 783 * IDs against our list and return a device name if we find a match. 784 */ 785 static int nge_probe(dev) 786 device_t dev; 787 { 788 struct nge_type *t; 789 790 t = nge_devs; 791 792 while(t->nge_name != NULL) { 793 if ((pci_get_vendor(dev) == t->nge_vid) && 794 (pci_get_device(dev) == t->nge_did)) { 795 device_set_desc(dev, t->nge_name); 796 return(0); 797 } 798 t++; 799 } 800 801 return(ENXIO); 802 } 803 804 /* 805 * Attach the interface. Allocate softc structures, do ifmedia 806 * setup and ethernet/BPF attach. 807 */ 808 static int nge_attach(dev) 809 device_t dev; 810 { 811 int s; 812 u_char eaddr[ETHER_ADDR_LEN]; 813 u_int32_t command; 814 struct nge_softc *sc; 815 struct ifnet *ifp; 816 int unit, error = 0, rid; 817 const char *sep = ""; 818 819 s = splimp(); 820 821 sc = device_get_softc(dev); 822 unit = device_get_unit(dev); 823 bzero(sc, sizeof(struct nge_softc)); 824 callout_init(&sc->nge_stat_timer); 825 826 /* 827 * Handle power management nonsense. 828 */ 829 830 831 command = pci_read_config(dev, NGE_PCI_CAPID, 4) & 0x000000FF; 832 if (command == 0x01) { 833 834 command = pci_read_config(dev, NGE_PCI_PWRMGMTCTRL, 4); 835 if (command & NGE_PSTATE_MASK) { 836 u_int32_t iobase, membase, irq; 837 838 /* Save important PCI config data. */ 839 iobase = pci_read_config(dev, NGE_PCI_LOIO, 4); 840 membase = pci_read_config(dev, NGE_PCI_LOMEM, 4); 841 irq = pci_read_config(dev, NGE_PCI_INTLINE, 4); 842 843 /* Reset the power state. */ 844 printf("nge%d: chip is in D%d power mode " 845 "-- setting to D0\n", unit, command & NGE_PSTATE_MASK); 846 command &= 0xFFFFFFFC; 847 pci_write_config(dev, NGE_PCI_PWRMGMTCTRL, command, 4); 848 849 /* Restore PCI config data. */ 850 pci_write_config(dev, NGE_PCI_LOIO, iobase, 4); 851 pci_write_config(dev, NGE_PCI_LOMEM, membase, 4); 852 pci_write_config(dev, NGE_PCI_INTLINE, irq, 4); 853 } 854 } 855 856 /* 857 * Map control/status registers. 858 */ 859 command = pci_read_config(dev, PCIR_COMMAND, 4); 860 command |= (PCIM_CMD_PORTEN|PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN); 861 pci_write_config(dev, PCIR_COMMAND, command, 4); 862 command = pci_read_config(dev, PCIR_COMMAND, 4); 863 864 #ifdef NGE_USEIOSPACE 865 if (!(command & PCIM_CMD_PORTEN)) { 866 printf("nge%d: failed to enable I/O ports!\n", unit); 867 error = ENXIO;; 868 goto fail; 869 } 870 #else 871 if (!(command & PCIM_CMD_MEMEN)) { 872 printf("nge%d: failed to enable memory mapping!\n", unit); 873 error = ENXIO;; 874 goto fail; 875 } 876 #endif 877 878 rid = NGE_RID; 879 sc->nge_res = bus_alloc_resource(dev, NGE_RES, &rid, 880 0, ~0, 1, RF_ACTIVE); 881 882 if (sc->nge_res == NULL) { 883 printf("nge%d: couldn't map ports/memory\n", unit); 884 error = ENXIO; 885 goto fail; 886 } 887 888 sc->nge_btag = rman_get_bustag(sc->nge_res); 889 sc->nge_bhandle = rman_get_bushandle(sc->nge_res); 890 891 /* Allocate interrupt */ 892 rid = 0; 893 sc->nge_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, 894 RF_SHAREABLE | RF_ACTIVE); 895 896 if (sc->nge_irq == NULL) { 897 printf("nge%d: couldn't map interrupt\n", unit); 898 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 899 error = ENXIO; 900 goto fail; 901 } 902 903 error = bus_setup_intr(dev, sc->nge_irq, INTR_TYPE_NET, 904 nge_intr, sc, &sc->nge_intrhand); 905 906 if (error) { 907 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 908 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 909 printf("nge%d: couldn't set up irq\n", unit); 910 goto fail; 911 } 912 913 /* Reset the adapter. */ 914 nge_reset(sc); 915 916 /* 917 * Get station address from the EEPROM. 918 */ 919 nge_read_eeprom(sc, (caddr_t)&eaddr[4], NGE_EE_NODEADDR, 1, 0); 920 nge_read_eeprom(sc, (caddr_t)&eaddr[2], NGE_EE_NODEADDR + 1, 1, 0); 921 nge_read_eeprom(sc, (caddr_t)&eaddr[0], NGE_EE_NODEADDR + 2, 1, 0); 922 923 sc->nge_unit = unit; 924 925 sc->nge_ldata = contigmalloc(sizeof(struct nge_list_data), M_DEVBUF, 926 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 927 928 if (sc->nge_ldata == NULL) { 929 printf("nge%d: no memory for list buffers!\n", unit); 930 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 931 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 932 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 933 error = ENXIO; 934 goto fail; 935 } 936 bzero(sc->nge_ldata, sizeof(struct nge_list_data)); 937 938 /* Try to allocate memory for jumbo buffers. */ 939 if (nge_alloc_jumbo_mem(sc)) { 940 printf("nge%d: jumbo buffer allocation failed\n", 941 sc->nge_unit); 942 contigfree(sc->nge_ldata, 943 sizeof(struct nge_list_data), M_DEVBUF); 944 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 945 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 946 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 947 error = ENXIO; 948 goto fail; 949 } 950 951 ifp = &sc->arpcom.ac_if; 952 ifp->if_softc = sc; 953 if_initname(ifp, "nge", unit); 954 ifp->if_mtu = ETHERMTU; 955 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 956 ifp->if_ioctl = nge_ioctl; 957 ifp->if_start = nge_start; 958 ifp->if_watchdog = nge_watchdog; 959 ifp->if_init = nge_init; 960 ifp->if_baudrate = 1000000000; 961 ifp->if_snd.ifq_maxlen = NGE_TX_LIST_CNT - 1; 962 ifp->if_hwassist = NGE_CSUM_FEATURES; 963 ifp->if_capabilities = IFCAP_HWCSUM; 964 ifp->if_capenable = ifp->if_capabilities; 965 966 /* 967 * Do MII setup. 968 */ 969 if (mii_phy_probe(dev, &sc->nge_miibus, 970 nge_ifmedia_upd, nge_ifmedia_sts)) { 971 if (CSR_READ_4(sc, NGE_CFG) & NGE_CFG_TBI_EN) { 972 sc->nge_tbi = 1; 973 device_printf(dev, "Using TBI\n"); 974 975 sc->nge_miibus = dev; 976 977 ifmedia_init(&sc->nge_ifmedia, 0, nge_ifmedia_upd, 978 nge_ifmedia_sts); 979 #define ADD(m, c) ifmedia_add(&sc->nge_ifmedia, (m), (c), NULL) 980 #define PRINT(s) printf("%s%s", sep, s); sep = ", " 981 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_NONE, 0, 0), 0); 982 device_printf(dev, " "); 983 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, 0, 0), 0); 984 PRINT("1000baseSX"); 985 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_1000_SX, IFM_FDX, 0),0); 986 PRINT("1000baseSX-FDX"); 987 ADD(IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0), 0); 988 PRINT("auto"); 989 990 printf("\n"); 991 #undef ADD 992 #undef PRINT 993 ifmedia_set(&sc->nge_ifmedia, 994 IFM_MAKEWORD(IFM_ETHER, IFM_AUTO, 0, 0)); 995 996 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 997 | NGE_GPIO_GP4_OUT 998 | NGE_GPIO_GP1_OUTENB | NGE_GPIO_GP2_OUTENB 999 | NGE_GPIO_GP3_OUTENB 1000 | NGE_GPIO_GP3_IN | NGE_GPIO_GP4_IN); 1001 1002 } else { 1003 printf("nge%d: MII without any PHY!\n", sc->nge_unit); 1004 nge_free_jumbo_mem(sc); 1005 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 1006 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 1007 bus_release_resource(dev, NGE_RES, NGE_RID, 1008 sc->nge_res); 1009 error = ENXIO; 1010 goto fail; 1011 } 1012 } 1013 1014 /* 1015 * Call MI attach routine. 1016 */ 1017 ether_ifattach(ifp, eaddr); 1018 1019 fail: 1020 1021 splx(s); 1022 return(error); 1023 } 1024 1025 static int nge_detach(dev) 1026 device_t dev; 1027 { 1028 struct nge_softc *sc; 1029 struct ifnet *ifp; 1030 int s; 1031 1032 s = splimp(); 1033 1034 sc = device_get_softc(dev); 1035 ifp = &sc->arpcom.ac_if; 1036 1037 nge_reset(sc); 1038 nge_stop(sc); 1039 ether_ifdetach(ifp); 1040 1041 bus_generic_detach(dev); 1042 if (!sc->nge_tbi) { 1043 device_delete_child(dev, sc->nge_miibus); 1044 } 1045 bus_teardown_intr(dev, sc->nge_irq, sc->nge_intrhand); 1046 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->nge_irq); 1047 bus_release_resource(dev, NGE_RES, NGE_RID, sc->nge_res); 1048 1049 contigfree(sc->nge_ldata, sizeof(struct nge_list_data), M_DEVBUF); 1050 nge_free_jumbo_mem(sc); 1051 1052 splx(s); 1053 1054 return(0); 1055 } 1056 1057 /* 1058 * Initialize the transmit descriptors. 1059 */ 1060 static int nge_list_tx_init(sc) 1061 struct nge_softc *sc; 1062 { 1063 struct nge_list_data *ld; 1064 struct nge_ring_data *cd; 1065 int i; 1066 1067 cd = &sc->nge_cdata; 1068 ld = sc->nge_ldata; 1069 1070 for (i = 0; i < NGE_TX_LIST_CNT; i++) { 1071 if (i == (NGE_TX_LIST_CNT - 1)) { 1072 ld->nge_tx_list[i].nge_nextdesc = 1073 &ld->nge_tx_list[0]; 1074 ld->nge_tx_list[i].nge_next = 1075 vtophys(&ld->nge_tx_list[0]); 1076 } else { 1077 ld->nge_tx_list[i].nge_nextdesc = 1078 &ld->nge_tx_list[i + 1]; 1079 ld->nge_tx_list[i].nge_next = 1080 vtophys(&ld->nge_tx_list[i + 1]); 1081 } 1082 ld->nge_tx_list[i].nge_mbuf = NULL; 1083 ld->nge_tx_list[i].nge_ptr = 0; 1084 ld->nge_tx_list[i].nge_ctl = 0; 1085 } 1086 1087 cd->nge_tx_prod = cd->nge_tx_cons = cd->nge_tx_cnt = 0; 1088 1089 return(0); 1090 } 1091 1092 1093 /* 1094 * Initialize the RX descriptors and allocate mbufs for them. Note that 1095 * we arrange the descriptors in a closed ring, so that the last descriptor 1096 * points back to the first. 1097 */ 1098 static int nge_list_rx_init(sc) 1099 struct nge_softc *sc; 1100 { 1101 struct nge_list_data *ld; 1102 struct nge_ring_data *cd; 1103 int i; 1104 1105 ld = sc->nge_ldata; 1106 cd = &sc->nge_cdata; 1107 1108 for (i = 0; i < NGE_RX_LIST_CNT; i++) { 1109 if (nge_newbuf(sc, &ld->nge_rx_list[i], NULL) == ENOBUFS) 1110 return(ENOBUFS); 1111 if (i == (NGE_RX_LIST_CNT - 1)) { 1112 ld->nge_rx_list[i].nge_nextdesc = 1113 &ld->nge_rx_list[0]; 1114 ld->nge_rx_list[i].nge_next = 1115 vtophys(&ld->nge_rx_list[0]); 1116 } else { 1117 ld->nge_rx_list[i].nge_nextdesc = 1118 &ld->nge_rx_list[i + 1]; 1119 ld->nge_rx_list[i].nge_next = 1120 vtophys(&ld->nge_rx_list[i + 1]); 1121 } 1122 } 1123 1124 cd->nge_rx_prod = 0; 1125 1126 return(0); 1127 } 1128 1129 /* 1130 * Initialize an RX descriptor and attach an MBUF cluster. 1131 */ 1132 static int nge_newbuf(sc, c, m) 1133 struct nge_softc *sc; 1134 struct nge_desc *c; 1135 struct mbuf *m; 1136 { 1137 struct mbuf *m_new = NULL; 1138 caddr_t *buf = NULL; 1139 1140 if (m == NULL) { 1141 MGETHDR(m_new, MB_DONTWAIT, MT_DATA); 1142 if (m_new == NULL) { 1143 printf("nge%d: no memory for rx list " 1144 "-- packet dropped!\n", sc->nge_unit); 1145 return(ENOBUFS); 1146 } 1147 1148 /* Allocate the jumbo buffer */ 1149 buf = nge_jalloc(sc); 1150 if (buf == NULL) { 1151 #ifdef NGE_VERBOSE 1152 printf("nge%d: jumbo allocation failed " 1153 "-- packet dropped!\n", sc->nge_unit); 1154 #endif 1155 m_freem(m_new); 1156 return(ENOBUFS); 1157 } 1158 /* Attach the buffer to the mbuf */ 1159 m_new->m_data = m_new->m_ext.ext_buf = (void *)buf; 1160 m_new->m_flags |= M_EXT | M_EXT_OLD; 1161 m_new->m_ext.ext_size = m_new->m_pkthdr.len = 1162 m_new->m_len = NGE_MCLBYTES; 1163 m_new->m_ext.ext_nfree.old = nge_jfree; 1164 m_new->m_ext.ext_nref.old = nge_jref; 1165 } else { 1166 m_new = m; 1167 m_new->m_len = m_new->m_pkthdr.len = NGE_MCLBYTES; 1168 m_new->m_data = m_new->m_ext.ext_buf; 1169 } 1170 1171 m_adj(m_new, sizeof(u_int64_t)); 1172 1173 c->nge_mbuf = m_new; 1174 c->nge_ptr = vtophys(mtod(m_new, caddr_t)); 1175 c->nge_ctl = m_new->m_len; 1176 c->nge_extsts = 0; 1177 1178 return(0); 1179 } 1180 1181 static int nge_alloc_jumbo_mem(sc) 1182 struct nge_softc *sc; 1183 { 1184 caddr_t ptr; 1185 int i; 1186 struct nge_jpool_entry *entry; 1187 1188 /* Grab a big chunk o' storage. */ 1189 sc->nge_cdata.nge_jumbo_buf = contigmalloc(NGE_JMEM, M_DEVBUF, 1190 M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); 1191 1192 if (sc->nge_cdata.nge_jumbo_buf == NULL) { 1193 printf("nge%d: no memory for jumbo buffers!\n", sc->nge_unit); 1194 return(ENOBUFS); 1195 } 1196 1197 SLIST_INIT(&sc->nge_jfree_listhead); 1198 SLIST_INIT(&sc->nge_jinuse_listhead); 1199 1200 /* 1201 * Now divide it up into 9K pieces and save the addresses 1202 * in an array. 1203 */ 1204 ptr = sc->nge_cdata.nge_jumbo_buf; 1205 for (i = 0; i < NGE_JSLOTS; i++) { 1206 u_int64_t **aptr; 1207 aptr = (u_int64_t **)ptr; 1208 aptr[0] = (u_int64_t *)sc; 1209 ptr += sizeof(u_int64_t); 1210 sc->nge_cdata.nge_jslots[i].nge_buf = ptr; 1211 sc->nge_cdata.nge_jslots[i].nge_inuse = 0; 1212 ptr += NGE_MCLBYTES; 1213 entry = malloc(sizeof(struct nge_jpool_entry), 1214 M_DEVBUF, M_WAITOK); 1215 if (entry == NULL) { 1216 printf("nge%d: no memory for jumbo " 1217 "buffer queue!\n", sc->nge_unit); 1218 return(ENOBUFS); 1219 } 1220 entry->slot = i; 1221 SLIST_INSERT_HEAD(&sc->nge_jfree_listhead, 1222 entry, jpool_entries); 1223 } 1224 1225 return(0); 1226 } 1227 1228 static void nge_free_jumbo_mem(sc) 1229 struct nge_softc *sc; 1230 { 1231 int i; 1232 struct nge_jpool_entry *entry; 1233 1234 for (i = 0; i < NGE_JSLOTS; i++) { 1235 entry = SLIST_FIRST(&sc->nge_jfree_listhead); 1236 SLIST_REMOVE_HEAD(&sc->nge_jfree_listhead, jpool_entries); 1237 free(entry, M_DEVBUF); 1238 } 1239 1240 contigfree(sc->nge_cdata.nge_jumbo_buf, NGE_JMEM, M_DEVBUF); 1241 1242 return; 1243 } 1244 1245 /* 1246 * Allocate a jumbo buffer. 1247 */ 1248 static void *nge_jalloc(sc) 1249 struct nge_softc *sc; 1250 { 1251 struct nge_jpool_entry *entry; 1252 1253 entry = SLIST_FIRST(&sc->nge_jfree_listhead); 1254 1255 if (entry == NULL) { 1256 #ifdef NGE_VERBOSE 1257 printf("nge%d: no free jumbo buffers\n", sc->nge_unit); 1258 #endif 1259 return(NULL); 1260 } 1261 1262 SLIST_REMOVE_HEAD(&sc->nge_jfree_listhead, jpool_entries); 1263 SLIST_INSERT_HEAD(&sc->nge_jinuse_listhead, entry, jpool_entries); 1264 sc->nge_cdata.nge_jslots[entry->slot].nge_inuse = 1; 1265 return(sc->nge_cdata.nge_jslots[entry->slot].nge_buf); 1266 } 1267 1268 /* 1269 * Adjust usage count on a jumbo buffer. In general this doesn't 1270 * get used much because our jumbo buffers don't get passed around 1271 * a lot, but it's implemented for correctness. 1272 */ 1273 static void nge_jref(buf, size) 1274 caddr_t buf; 1275 u_int size; 1276 { 1277 struct nge_softc *sc; 1278 u_int64_t **aptr; 1279 int i; 1280 1281 /* Extract the softc struct pointer. */ 1282 aptr = (u_int64_t **)(buf - sizeof(u_int64_t)); 1283 sc = (struct nge_softc *)(aptr[0]); 1284 1285 if (sc == NULL) 1286 panic("nge_jref: can't find softc pointer!"); 1287 1288 if (size != NGE_MCLBYTES) 1289 panic("nge_jref: adjusting refcount of buf of wrong size!"); 1290 1291 /* calculate the slot this buffer belongs to */ 1292 1293 i = ((vm_offset_t)aptr 1294 - (vm_offset_t)sc->nge_cdata.nge_jumbo_buf) / NGE_JLEN; 1295 1296 if ((i < 0) || (i >= NGE_JSLOTS)) 1297 panic("nge_jref: asked to reference buffer " 1298 "that we don't manage!"); 1299 else if (sc->nge_cdata.nge_jslots[i].nge_inuse == 0) 1300 panic("nge_jref: buffer already free!"); 1301 else 1302 sc->nge_cdata.nge_jslots[i].nge_inuse++; 1303 1304 return; 1305 } 1306 1307 /* 1308 * Release a jumbo buffer. 1309 */ 1310 static void nge_jfree(buf, size) 1311 caddr_t buf; 1312 u_int size; 1313 { 1314 struct nge_softc *sc; 1315 u_int64_t **aptr; 1316 int i; 1317 struct nge_jpool_entry *entry; 1318 1319 /* Extract the softc struct pointer. */ 1320 aptr = (u_int64_t **)(buf - sizeof(u_int64_t)); 1321 sc = (struct nge_softc *)(aptr[0]); 1322 1323 if (sc == NULL) 1324 panic("nge_jfree: can't find softc pointer!"); 1325 1326 if (size != NGE_MCLBYTES) 1327 panic("nge_jfree: freeing buffer of wrong size!"); 1328 1329 /* calculate the slot this buffer belongs to */ 1330 1331 i = ((vm_offset_t)aptr 1332 - (vm_offset_t)sc->nge_cdata.nge_jumbo_buf) / NGE_JLEN; 1333 1334 if ((i < 0) || (i >= NGE_JSLOTS)) 1335 panic("nge_jfree: asked to free buffer that we don't manage!"); 1336 else if (sc->nge_cdata.nge_jslots[i].nge_inuse == 0) 1337 panic("nge_jfree: buffer already free!"); 1338 else { 1339 sc->nge_cdata.nge_jslots[i].nge_inuse--; 1340 if(sc->nge_cdata.nge_jslots[i].nge_inuse == 0) { 1341 entry = SLIST_FIRST(&sc->nge_jinuse_listhead); 1342 if (entry == NULL) 1343 panic("nge_jfree: buffer not in use!"); 1344 entry->slot = i; 1345 SLIST_REMOVE_HEAD(&sc->nge_jinuse_listhead, 1346 jpool_entries); 1347 SLIST_INSERT_HEAD(&sc->nge_jfree_listhead, 1348 entry, jpool_entries); 1349 } 1350 } 1351 1352 return; 1353 } 1354 /* 1355 * A frame has been uploaded: pass the resulting mbuf chain up to 1356 * the higher level protocols. 1357 */ 1358 static void nge_rxeof(sc) 1359 struct nge_softc *sc; 1360 { 1361 struct mbuf *m; 1362 struct ifnet *ifp; 1363 struct nge_desc *cur_rx; 1364 int i, total_len = 0; 1365 u_int32_t rxstat; 1366 1367 ifp = &sc->arpcom.ac_if; 1368 i = sc->nge_cdata.nge_rx_prod; 1369 1370 while(NGE_OWNDESC(&sc->nge_ldata->nge_rx_list[i])) { 1371 struct mbuf *m0 = NULL; 1372 u_int32_t extsts; 1373 1374 #ifdef DEVICE_POLLING 1375 if (ifp->if_flags & IFF_POLLING) { 1376 if (sc->rxcycles <= 0) 1377 break; 1378 sc->rxcycles--; 1379 } 1380 #endif /* DEVICE_POLLING */ 1381 1382 cur_rx = &sc->nge_ldata->nge_rx_list[i]; 1383 rxstat = cur_rx->nge_rxstat; 1384 extsts = cur_rx->nge_extsts; 1385 m = cur_rx->nge_mbuf; 1386 cur_rx->nge_mbuf = NULL; 1387 total_len = NGE_RXBYTES(cur_rx); 1388 NGE_INC(i, NGE_RX_LIST_CNT); 1389 /* 1390 * If an error occurs, update stats, clear the 1391 * status word and leave the mbuf cluster in place: 1392 * it should simply get re-used next time this descriptor 1393 * comes up in the ring. 1394 */ 1395 if (!(rxstat & NGE_CMDSTS_PKT_OK)) { 1396 ifp->if_ierrors++; 1397 nge_newbuf(sc, cur_rx, m); 1398 continue; 1399 } 1400 1401 /* 1402 * Ok. NatSemi really screwed up here. This is the 1403 * only gigE chip I know of with alignment constraints 1404 * on receive buffers. RX buffers must be 64-bit aligned. 1405 */ 1406 #ifdef __i386__ 1407 /* 1408 * By popular demand, ignore the alignment problems 1409 * on the Intel x86 platform. The performance hit 1410 * incurred due to unaligned accesses is much smaller 1411 * than the hit produced by forcing buffer copies all 1412 * the time, especially with jumbo frames. We still 1413 * need to fix up the alignment everywhere else though. 1414 */ 1415 if (nge_newbuf(sc, cur_rx, NULL) == ENOBUFS) { 1416 #endif 1417 m0 = m_devget(mtod(m, char *) - ETHER_ALIGN, 1418 total_len + ETHER_ALIGN, 0, ifp, NULL); 1419 nge_newbuf(sc, cur_rx, m); 1420 if (m0 == NULL) { 1421 printf("nge%d: no receive buffers " 1422 "available -- packet dropped!\n", 1423 sc->nge_unit); 1424 ifp->if_ierrors++; 1425 continue; 1426 } 1427 m_adj(m0, ETHER_ALIGN); 1428 m = m0; 1429 #ifdef __i386__ 1430 } else { 1431 m->m_pkthdr.rcvif = ifp; 1432 m->m_pkthdr.len = m->m_len = total_len; 1433 } 1434 #endif 1435 1436 ifp->if_ipackets++; 1437 1438 /* Do IP checksum checking. */ 1439 if (extsts & NGE_RXEXTSTS_IPPKT) 1440 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 1441 if (!(extsts & NGE_RXEXTSTS_IPCSUMERR)) 1442 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1443 if ((extsts & NGE_RXEXTSTS_TCPPKT && 1444 !(extsts & NGE_RXEXTSTS_TCPCSUMERR)) || 1445 (extsts & NGE_RXEXTSTS_UDPPKT && 1446 !(extsts & NGE_RXEXTSTS_UDPCSUMERR))) { 1447 m->m_pkthdr.csum_flags |= 1448 CSUM_DATA_VALID|CSUM_PSEUDO_HDR; 1449 m->m_pkthdr.csum_data = 0xffff; 1450 } 1451 1452 /* 1453 * If we received a packet with a vlan tag, pass it 1454 * to vlan_input() instead of ether_input(). 1455 */ 1456 if (extsts & NGE_RXEXTSTS_VLANPKT) 1457 VLAN_INPUT_TAG(m, extsts & NGE_RXEXTSTS_VTCI); 1458 else 1459 (*ifp->if_input)(ifp, m); 1460 } 1461 1462 sc->nge_cdata.nge_rx_prod = i; 1463 1464 return; 1465 } 1466 1467 /* 1468 * A frame was downloaded to the chip. It's safe for us to clean up 1469 * the list buffers. 1470 */ 1471 1472 static void nge_txeof(sc) 1473 struct nge_softc *sc; 1474 { 1475 struct nge_desc *cur_tx = NULL; 1476 struct ifnet *ifp; 1477 u_int32_t idx; 1478 1479 ifp = &sc->arpcom.ac_if; 1480 1481 /* Clear the timeout timer. */ 1482 ifp->if_timer = 0; 1483 1484 /* 1485 * Go through our tx list and free mbufs for those 1486 * frames that have been transmitted. 1487 */ 1488 idx = sc->nge_cdata.nge_tx_cons; 1489 while (idx != sc->nge_cdata.nge_tx_prod) { 1490 cur_tx = &sc->nge_ldata->nge_tx_list[idx]; 1491 1492 if (NGE_OWNDESC(cur_tx)) 1493 break; 1494 1495 if (cur_tx->nge_ctl & NGE_CMDSTS_MORE) { 1496 sc->nge_cdata.nge_tx_cnt--; 1497 NGE_INC(idx, NGE_TX_LIST_CNT); 1498 continue; 1499 } 1500 1501 if (!(cur_tx->nge_ctl & NGE_CMDSTS_PKT_OK)) { 1502 ifp->if_oerrors++; 1503 if (cur_tx->nge_txstat & NGE_TXSTAT_EXCESSCOLLS) 1504 ifp->if_collisions++; 1505 if (cur_tx->nge_txstat & NGE_TXSTAT_OUTOFWINCOLL) 1506 ifp->if_collisions++; 1507 } 1508 1509 ifp->if_collisions += 1510 (cur_tx->nge_txstat & NGE_TXSTAT_COLLCNT) >> 16; 1511 1512 ifp->if_opackets++; 1513 if (cur_tx->nge_mbuf != NULL) { 1514 m_freem(cur_tx->nge_mbuf); 1515 cur_tx->nge_mbuf = NULL; 1516 } 1517 1518 sc->nge_cdata.nge_tx_cnt--; 1519 NGE_INC(idx, NGE_TX_LIST_CNT); 1520 ifp->if_timer = 0; 1521 } 1522 1523 sc->nge_cdata.nge_tx_cons = idx; 1524 1525 if (cur_tx != NULL) 1526 ifp->if_flags &= ~IFF_OACTIVE; 1527 1528 return; 1529 } 1530 1531 static void nge_tick(xsc) 1532 void *xsc; 1533 { 1534 struct nge_softc *sc; 1535 struct mii_data *mii; 1536 struct ifnet *ifp; 1537 int s; 1538 1539 s = splimp(); 1540 1541 sc = xsc; 1542 ifp = &sc->arpcom.ac_if; 1543 1544 if (sc->nge_tbi) { 1545 if (!sc->nge_link) { 1546 if (CSR_READ_4(sc, NGE_TBI_BMSR) 1547 & NGE_TBIBMSR_ANEG_DONE) { 1548 printf("nge%d: gigabit link up\n", 1549 sc->nge_unit); 1550 nge_miibus_statchg(sc->nge_miibus); 1551 sc->nge_link++; 1552 if (ifp->if_snd.ifq_head != NULL) 1553 nge_start(ifp); 1554 } 1555 } 1556 } else { 1557 mii = device_get_softc(sc->nge_miibus); 1558 mii_tick(mii); 1559 1560 if (!sc->nge_link) { 1561 if (mii->mii_media_status & IFM_ACTIVE && 1562 IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { 1563 sc->nge_link++; 1564 if (IFM_SUBTYPE(mii->mii_media_active) 1565 == IFM_1000_TX) 1566 printf("nge%d: gigabit link up\n", 1567 sc->nge_unit); 1568 if (ifp->if_snd.ifq_head != NULL) 1569 nge_start(ifp); 1570 } 1571 } 1572 } 1573 callout_reset(&sc->nge_stat_timer, hz, nge_tick, sc); 1574 1575 splx(s); 1576 1577 return; 1578 } 1579 1580 #ifdef DEVICE_POLLING 1581 static poll_handler_t nge_poll; 1582 1583 static void 1584 nge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1585 { 1586 struct nge_softc *sc = ifp->if_softc; 1587 1588 if (cmd == POLL_DEREGISTER) { /* final call, enable interrupts */ 1589 CSR_WRITE_4(sc, NGE_IER, 1); 1590 return; 1591 } 1592 1593 /* 1594 * On the nge, reading the status register also clears it. 1595 * So before returning to intr mode we must make sure that all 1596 * possible pending sources of interrupts have been served. 1597 * In practice this means run to completion the *eof routines, 1598 * and then call the interrupt routine 1599 */ 1600 sc->rxcycles = count; 1601 nge_rxeof(sc); 1602 nge_txeof(sc); 1603 if (ifp->if_snd.ifq_head != NULL) 1604 nge_start(ifp); 1605 1606 if (sc->rxcycles > 0 || cmd == POLL_AND_CHECK_STATUS) { 1607 u_int32_t status; 1608 1609 /* Reading the ISR register clears all interrupts. */ 1610 status = CSR_READ_4(sc, NGE_ISR); 1611 1612 if (status & (NGE_ISR_RX_ERR|NGE_ISR_RX_OFLOW)) 1613 nge_rxeof(sc); 1614 1615 if (status & (NGE_ISR_RX_IDLE)) 1616 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1617 1618 if (status & NGE_ISR_SYSERR) { 1619 nge_reset(sc); 1620 nge_init(sc); 1621 } 1622 } 1623 } 1624 #endif /* DEVICE_POLLING */ 1625 1626 static void nge_intr(arg) 1627 void *arg; 1628 { 1629 struct nge_softc *sc; 1630 struct ifnet *ifp; 1631 u_int32_t status; 1632 1633 sc = arg; 1634 ifp = &sc->arpcom.ac_if; 1635 1636 #ifdef DEVICE_POLLING 1637 if (ifp->if_flags & IFF_POLLING) 1638 return; 1639 if (ether_poll_register(nge_poll, ifp)) { /* ok, disable interrupts */ 1640 CSR_WRITE_4(sc, NGE_IER, 0); 1641 nge_poll(ifp, 0, 1); 1642 return; 1643 } 1644 #endif /* DEVICE_POLLING */ 1645 1646 /* Supress unwanted interrupts */ 1647 if (!(ifp->if_flags & IFF_UP)) { 1648 nge_stop(sc); 1649 return; 1650 } 1651 1652 /* Disable interrupts. */ 1653 CSR_WRITE_4(sc, NGE_IER, 0); 1654 1655 /* Data LED on for TBI mode */ 1656 if(sc->nge_tbi) 1657 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1658 | NGE_GPIO_GP3_OUT); 1659 1660 for (;;) { 1661 /* Reading the ISR register clears all interrupts. */ 1662 status = CSR_READ_4(sc, NGE_ISR); 1663 1664 if ((status & NGE_INTRS) == 0) 1665 break; 1666 1667 if ((status & NGE_ISR_TX_DESC_OK) || 1668 (status & NGE_ISR_TX_ERR) || 1669 (status & NGE_ISR_TX_OK) || 1670 (status & NGE_ISR_TX_IDLE)) 1671 nge_txeof(sc); 1672 1673 if ((status & NGE_ISR_RX_DESC_OK) || 1674 (status & NGE_ISR_RX_ERR) || 1675 (status & NGE_ISR_RX_OFLOW) || 1676 (status & NGE_ISR_RX_FIFO_OFLOW) || 1677 (status & NGE_ISR_RX_IDLE) || 1678 (status & NGE_ISR_RX_OK)) 1679 nge_rxeof(sc); 1680 1681 if ((status & NGE_ISR_RX_IDLE)) 1682 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 1683 1684 if (status & NGE_ISR_SYSERR) { 1685 nge_reset(sc); 1686 ifp->if_flags &= ~IFF_RUNNING; 1687 nge_init(sc); 1688 } 1689 1690 #ifdef notyet 1691 /* mii_tick should only be called once per second */ 1692 if (status & NGE_ISR_PHY_INTR) { 1693 sc->nge_link = 0; 1694 nge_tick(sc); 1695 } 1696 #endif 1697 } 1698 1699 /* Re-enable interrupts. */ 1700 CSR_WRITE_4(sc, NGE_IER, 1); 1701 1702 if (ifp->if_snd.ifq_head != NULL) 1703 nge_start(ifp); 1704 1705 /* Data LED off for TBI mode */ 1706 1707 if(sc->nge_tbi) 1708 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 1709 & ~NGE_GPIO_GP3_OUT); 1710 1711 return; 1712 } 1713 1714 /* 1715 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1716 * pointers to the fragment pointers. 1717 */ 1718 static int nge_encap(sc, m_head, txidx) 1719 struct nge_softc *sc; 1720 struct mbuf *m_head; 1721 u_int32_t *txidx; 1722 { 1723 struct nge_desc *f = NULL; 1724 struct mbuf *m; 1725 int frag, cur, cnt = 0; 1726 struct ifvlan *ifv = NULL; 1727 1728 if ((m_head->m_flags & (M_PROTO1|M_PKTHDR)) == (M_PROTO1|M_PKTHDR) && 1729 m_head->m_pkthdr.rcvif != NULL && 1730 m_head->m_pkthdr.rcvif->if_type == IFT_L2VLAN) 1731 ifv = m_head->m_pkthdr.rcvif->if_softc; 1732 1733 /* 1734 * Start packing the mbufs in this chain into 1735 * the fragment pointers. Stop when we run out 1736 * of fragments or hit the end of the mbuf chain. 1737 */ 1738 m = m_head; 1739 cur = frag = *txidx; 1740 1741 for (m = m_head; m != NULL; m = m->m_next) { 1742 if (m->m_len != 0) { 1743 if ((NGE_TX_LIST_CNT - 1744 (sc->nge_cdata.nge_tx_cnt + cnt)) < 2) 1745 return(ENOBUFS); 1746 f = &sc->nge_ldata->nge_tx_list[frag]; 1747 f->nge_ctl = NGE_CMDSTS_MORE | m->m_len; 1748 f->nge_ptr = vtophys(mtod(m, vm_offset_t)); 1749 if (cnt != 0) 1750 f->nge_ctl |= NGE_CMDSTS_OWN; 1751 cur = frag; 1752 NGE_INC(frag, NGE_TX_LIST_CNT); 1753 cnt++; 1754 } 1755 } 1756 1757 if (m != NULL) 1758 return(ENOBUFS); 1759 1760 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts = 0; 1761 if (m_head->m_pkthdr.csum_flags) { 1762 if (m_head->m_pkthdr.csum_flags & CSUM_IP) 1763 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1764 NGE_TXEXTSTS_IPCSUM; 1765 if (m_head->m_pkthdr.csum_flags & CSUM_TCP) 1766 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1767 NGE_TXEXTSTS_TCPCSUM; 1768 if (m_head->m_pkthdr.csum_flags & CSUM_UDP) 1769 sc->nge_ldata->nge_tx_list[*txidx].nge_extsts |= 1770 NGE_TXEXTSTS_UDPCSUM; 1771 } 1772 1773 if (ifv != NULL) { 1774 sc->nge_ldata->nge_tx_list[cur].nge_extsts |= 1775 (NGE_TXEXTSTS_VLANPKT|ifv->ifv_tag); 1776 } 1777 1778 sc->nge_ldata->nge_tx_list[cur].nge_mbuf = m_head; 1779 sc->nge_ldata->nge_tx_list[cur].nge_ctl &= ~NGE_CMDSTS_MORE; 1780 sc->nge_ldata->nge_tx_list[*txidx].nge_ctl |= NGE_CMDSTS_OWN; 1781 sc->nge_cdata.nge_tx_cnt += cnt; 1782 *txidx = frag; 1783 1784 return(0); 1785 } 1786 1787 /* 1788 * Main transmit routine. To avoid having to do mbuf copies, we put pointers 1789 * to the mbuf data regions directly in the transmit lists. We also save a 1790 * copy of the pointers since the transmit list fragment pointers are 1791 * physical addresses. 1792 */ 1793 1794 static void nge_start(ifp) 1795 struct ifnet *ifp; 1796 { 1797 struct nge_softc *sc; 1798 struct mbuf *m_head = NULL; 1799 u_int32_t idx; 1800 1801 sc = ifp->if_softc; 1802 1803 if (!sc->nge_link) 1804 return; 1805 1806 idx = sc->nge_cdata.nge_tx_prod; 1807 1808 if (ifp->if_flags & IFF_OACTIVE) 1809 return; 1810 1811 while(sc->nge_ldata->nge_tx_list[idx].nge_mbuf == NULL) { 1812 IF_DEQUEUE(&ifp->if_snd, m_head); 1813 if (m_head == NULL) 1814 break; 1815 1816 if (nge_encap(sc, m_head, &idx)) { 1817 IF_PREPEND(&ifp->if_snd, m_head); 1818 ifp->if_flags |= IFF_OACTIVE; 1819 break; 1820 } 1821 1822 /* 1823 * If there's a BPF listener, bounce a copy of this frame 1824 * to him. 1825 */ 1826 if (ifp->if_bpf) 1827 bpf_mtap(ifp, m_head); 1828 1829 } 1830 1831 /* Transmit */ 1832 sc->nge_cdata.nge_tx_prod = idx; 1833 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_ENABLE); 1834 1835 /* 1836 * Set a timeout in case the chip goes out to lunch. 1837 */ 1838 ifp->if_timer = 5; 1839 1840 return; 1841 } 1842 1843 static void nge_init(xsc) 1844 void *xsc; 1845 { 1846 struct nge_softc *sc = xsc; 1847 struct ifnet *ifp = &sc->arpcom.ac_if; 1848 struct mii_data *mii; 1849 int s; 1850 1851 if (ifp->if_flags & IFF_RUNNING) 1852 return; 1853 1854 s = splimp(); 1855 1856 /* 1857 * Cancel pending I/O and free all RX/TX buffers. 1858 */ 1859 nge_stop(sc); 1860 callout_reset(&sc->nge_stat_timer, hz, nge_tick, sc); 1861 1862 if (sc->nge_tbi) { 1863 mii = NULL; 1864 } else { 1865 mii = device_get_softc(sc->nge_miibus); 1866 } 1867 1868 /* Set MAC address */ 1869 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR0); 1870 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1871 ((u_int16_t *)sc->arpcom.ac_enaddr)[0]); 1872 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR1); 1873 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1874 ((u_int16_t *)sc->arpcom.ac_enaddr)[1]); 1875 CSR_WRITE_4(sc, NGE_RXFILT_CTL, NGE_FILTADDR_PAR2); 1876 CSR_WRITE_4(sc, NGE_RXFILT_DATA, 1877 ((u_int16_t *)sc->arpcom.ac_enaddr)[2]); 1878 1879 /* Init circular RX list. */ 1880 if (nge_list_rx_init(sc) == ENOBUFS) { 1881 printf("nge%d: initialization failed: no " 1882 "memory for rx buffers\n", sc->nge_unit); 1883 nge_stop(sc); 1884 (void)splx(s); 1885 return; 1886 } 1887 1888 /* 1889 * Init tx descriptors. 1890 */ 1891 nge_list_tx_init(sc); 1892 1893 /* 1894 * For the NatSemi chip, we have to explicitly enable the 1895 * reception of ARP frames, as well as turn on the 'perfect 1896 * match' filter where we store the station address, otherwise 1897 * we won't receive unicasts meant for this host. 1898 */ 1899 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ARP); 1900 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_PERFECT); 1901 1902 /* If we want promiscuous mode, set the allframes bit. */ 1903 if (ifp->if_flags & IFF_PROMISC) { 1904 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLPHYS); 1905 } else { 1906 NGE_CLRBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ALLPHYS); 1907 } 1908 1909 /* 1910 * Set the capture broadcast bit to capture broadcast frames. 1911 */ 1912 if (ifp->if_flags & IFF_BROADCAST) { 1913 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_BROAD); 1914 } else { 1915 NGE_CLRBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_BROAD); 1916 } 1917 1918 /* 1919 * Load the multicast filter. 1920 */ 1921 nge_setmulti(sc); 1922 1923 /* Turn the receive filter on */ 1924 NGE_SETBIT(sc, NGE_RXFILT_CTL, NGE_RXFILTCTL_ENABLE); 1925 1926 /* 1927 * Load the address of the RX and TX lists. 1928 */ 1929 CSR_WRITE_4(sc, NGE_RX_LISTPTR, 1930 vtophys(&sc->nge_ldata->nge_rx_list[0])); 1931 CSR_WRITE_4(sc, NGE_TX_LISTPTR, 1932 vtophys(&sc->nge_ldata->nge_tx_list[0])); 1933 1934 /* Set RX configuration */ 1935 CSR_WRITE_4(sc, NGE_RX_CFG, NGE_RXCFG); 1936 /* 1937 * Enable hardware checksum validation for all IPv4 1938 * packets, do not reject packets with bad checksums. 1939 */ 1940 CSR_WRITE_4(sc, NGE_VLAN_IP_RXCTL, NGE_VIPRXCTL_IPCSUM_ENB); 1941 1942 /* 1943 * Tell the chip to detect and strip VLAN tag info from 1944 * received frames. The tag will be provided in the extsts 1945 * field in the RX descriptors. 1946 */ 1947 NGE_SETBIT(sc, NGE_VLAN_IP_RXCTL, 1948 NGE_VIPRXCTL_TAG_DETECT_ENB|NGE_VIPRXCTL_TAG_STRIP_ENB); 1949 1950 /* Set TX configuration */ 1951 CSR_WRITE_4(sc, NGE_TX_CFG, NGE_TXCFG); 1952 1953 /* 1954 * Enable TX IPv4 checksumming on a per-packet basis. 1955 */ 1956 CSR_WRITE_4(sc, NGE_VLAN_IP_TXCTL, NGE_VIPTXCTL_CSUM_PER_PKT); 1957 1958 /* 1959 * Tell the chip to insert VLAN tags on a per-packet basis as 1960 * dictated by the code in the frame encapsulation routine. 1961 */ 1962 NGE_SETBIT(sc, NGE_VLAN_IP_TXCTL, NGE_VIPTXCTL_TAG_PER_PKT); 1963 1964 /* Set full/half duplex mode. */ 1965 if (sc->nge_tbi) { 1966 if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 1967 == IFM_FDX) { 1968 NGE_SETBIT(sc, NGE_TX_CFG, 1969 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1970 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1971 } else { 1972 NGE_CLRBIT(sc, NGE_TX_CFG, 1973 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1974 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1975 } 1976 } else { 1977 if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { 1978 NGE_SETBIT(sc, NGE_TX_CFG, 1979 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1980 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1981 } else { 1982 NGE_CLRBIT(sc, NGE_TX_CFG, 1983 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 1984 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 1985 } 1986 } 1987 1988 /* 1989 * Enable the delivery of PHY interrupts based on 1990 * link/speed/duplex status changes. Also enable the 1991 * extsts field in the DMA descriptors (needed for 1992 * TCP/IP checksum offload on transmit). 1993 */ 1994 NGE_SETBIT(sc, NGE_CFG, NGE_CFG_PHYINTR_SPD| 1995 NGE_CFG_PHYINTR_LNK|NGE_CFG_PHYINTR_DUP|NGE_CFG_EXTSTS_ENB); 1996 1997 /* 1998 * Configure interrupt holdoff (moderation). We can 1999 * have the chip delay interrupt delivery for a certain 2000 * period. Units are in 100us, and the max setting 2001 * is 25500us (0xFF x 100us). Default is a 100us holdoff. 2002 */ 2003 CSR_WRITE_4(sc, NGE_IHR, 0x01); 2004 2005 /* 2006 * Enable interrupts. 2007 */ 2008 CSR_WRITE_4(sc, NGE_IMR, NGE_INTRS); 2009 #ifdef DEVICE_POLLING 2010 /* 2011 * ... only enable interrupts if we are not polling, make sure 2012 * they are off otherwise. 2013 */ 2014 if (ifp->if_flags & IFF_POLLING) 2015 CSR_WRITE_4(sc, NGE_IER, 0); 2016 else 2017 #endif /* DEVICE_POLLING */ 2018 CSR_WRITE_4(sc, NGE_IER, 1); 2019 2020 /* Enable receiver and transmitter. */ 2021 NGE_CLRBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE|NGE_CSR_RX_DISABLE); 2022 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_RX_ENABLE); 2023 2024 nge_ifmedia_upd(ifp); 2025 2026 ifp->if_flags |= IFF_RUNNING; 2027 ifp->if_flags &= ~IFF_OACTIVE; 2028 2029 (void)splx(s); 2030 2031 return; 2032 } 2033 2034 /* 2035 * Set media options. 2036 */ 2037 static int nge_ifmedia_upd(ifp) 2038 struct ifnet *ifp; 2039 { 2040 struct nge_softc *sc; 2041 struct mii_data *mii; 2042 2043 sc = ifp->if_softc; 2044 2045 if (sc->nge_tbi) { 2046 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 2047 == IFM_AUTO) { 2048 CSR_WRITE_4(sc, NGE_TBI_ANAR, 2049 CSR_READ_4(sc, NGE_TBI_ANAR) 2050 | NGE_TBIANAR_HDX | NGE_TBIANAR_FDX 2051 | NGE_TBIANAR_PS1 | NGE_TBIANAR_PS2); 2052 CSR_WRITE_4(sc, NGE_TBI_BMCR, NGE_TBIBMCR_ENABLE_ANEG 2053 | NGE_TBIBMCR_RESTART_ANEG); 2054 CSR_WRITE_4(sc, NGE_TBI_BMCR, NGE_TBIBMCR_ENABLE_ANEG); 2055 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media 2056 & IFM_GMASK) == IFM_FDX) { 2057 NGE_SETBIT(sc, NGE_TX_CFG, 2058 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 2059 NGE_SETBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 2060 2061 CSR_WRITE_4(sc, NGE_TBI_ANAR, 0); 2062 CSR_WRITE_4(sc, NGE_TBI_BMCR, 0); 2063 } else { 2064 NGE_CLRBIT(sc, NGE_TX_CFG, 2065 (NGE_TXCFG_IGN_HBEAT|NGE_TXCFG_IGN_CARR)); 2066 NGE_CLRBIT(sc, NGE_RX_CFG, NGE_RXCFG_RX_FDX); 2067 2068 CSR_WRITE_4(sc, NGE_TBI_ANAR, 0); 2069 CSR_WRITE_4(sc, NGE_TBI_BMCR, 0); 2070 } 2071 2072 CSR_WRITE_4(sc, NGE_GPIO, CSR_READ_4(sc, NGE_GPIO) 2073 & ~NGE_GPIO_GP3_OUT); 2074 } else { 2075 mii = device_get_softc(sc->nge_miibus); 2076 sc->nge_link = 0; 2077 if (mii->mii_instance) { 2078 struct mii_softc *miisc; 2079 for (miisc = LIST_FIRST(&mii->mii_phys); miisc != NULL; 2080 miisc = LIST_NEXT(miisc, mii_list)) 2081 mii_phy_reset(miisc); 2082 } 2083 mii_mediachg(mii); 2084 } 2085 2086 return(0); 2087 } 2088 2089 /* 2090 * Report current media status. 2091 */ 2092 static void nge_ifmedia_sts(ifp, ifmr) 2093 struct ifnet *ifp; 2094 struct ifmediareq *ifmr; 2095 { 2096 struct nge_softc *sc; 2097 struct mii_data *mii; 2098 2099 sc = ifp->if_softc; 2100 2101 if (sc->nge_tbi) { 2102 ifmr->ifm_status = IFM_AVALID; 2103 ifmr->ifm_active = IFM_ETHER; 2104 2105 if (CSR_READ_4(sc, NGE_TBI_BMSR) & NGE_TBIBMSR_ANEG_DONE) { 2106 ifmr->ifm_status |= IFM_ACTIVE; 2107 } 2108 if (CSR_READ_4(sc, NGE_TBI_BMCR) & NGE_TBIBMCR_LOOPBACK) 2109 ifmr->ifm_active |= IFM_LOOP; 2110 if (!CSR_READ_4(sc, NGE_TBI_BMSR) & NGE_TBIBMSR_ANEG_DONE) { 2111 ifmr->ifm_active |= IFM_NONE; 2112 ifmr->ifm_status = 0; 2113 return; 2114 } 2115 ifmr->ifm_active |= IFM_1000_SX; 2116 if (IFM_SUBTYPE(sc->nge_ifmedia.ifm_cur->ifm_media) 2117 == IFM_AUTO) { 2118 ifmr->ifm_active |= IFM_AUTO; 2119 if (CSR_READ_4(sc, NGE_TBI_ANLPAR) 2120 & NGE_TBIANAR_FDX) { 2121 ifmr->ifm_active |= IFM_FDX; 2122 }else if (CSR_READ_4(sc, NGE_TBI_ANLPAR) 2123 & NGE_TBIANAR_HDX) { 2124 ifmr->ifm_active |= IFM_HDX; 2125 } 2126 } else if ((sc->nge_ifmedia.ifm_cur->ifm_media & IFM_GMASK) 2127 == IFM_FDX) 2128 ifmr->ifm_active |= IFM_FDX; 2129 else 2130 ifmr->ifm_active |= IFM_HDX; 2131 2132 } else { 2133 mii = device_get_softc(sc->nge_miibus); 2134 mii_pollstat(mii); 2135 ifmr->ifm_active = mii->mii_media_active; 2136 ifmr->ifm_status = mii->mii_media_status; 2137 } 2138 2139 return; 2140 } 2141 2142 static int nge_ioctl(ifp, command, data, cr) 2143 struct ifnet *ifp; 2144 u_long command; 2145 caddr_t data; 2146 struct ucred *cr; 2147 { 2148 struct nge_softc *sc = ifp->if_softc; 2149 struct ifreq *ifr = (struct ifreq *) data; 2150 struct mii_data *mii; 2151 int s, error = 0; 2152 2153 s = splimp(); 2154 2155 switch(command) { 2156 case SIOCSIFADDR: 2157 case SIOCGIFADDR: 2158 error = ether_ioctl(ifp, command, data); 2159 break; 2160 case SIOCSIFMTU: 2161 if (ifr->ifr_mtu > NGE_JUMBO_MTU) 2162 error = EINVAL; 2163 else { 2164 ifp->if_mtu = ifr->ifr_mtu; 2165 /* 2166 * Workaround: if the MTU is larger than 2167 * 8152 (TX FIFO size minus 64 minus 18), turn off 2168 * TX checksum offloading. 2169 */ 2170 if (ifr->ifr_mtu >= 8152) 2171 ifp->if_hwassist = 0; 2172 else 2173 ifp->if_hwassist = NGE_CSUM_FEATURES; 2174 } 2175 break; 2176 case SIOCSIFFLAGS: 2177 if (ifp->if_flags & IFF_UP) { 2178 if (ifp->if_flags & IFF_RUNNING && 2179 ifp->if_flags & IFF_PROMISC && 2180 !(sc->nge_if_flags & IFF_PROMISC)) { 2181 NGE_SETBIT(sc, NGE_RXFILT_CTL, 2182 NGE_RXFILTCTL_ALLPHYS| 2183 NGE_RXFILTCTL_ALLMULTI); 2184 } else if (ifp->if_flags & IFF_RUNNING && 2185 !(ifp->if_flags & IFF_PROMISC) && 2186 sc->nge_if_flags & IFF_PROMISC) { 2187 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 2188 NGE_RXFILTCTL_ALLPHYS); 2189 if (!(ifp->if_flags & IFF_ALLMULTI)) 2190 NGE_CLRBIT(sc, NGE_RXFILT_CTL, 2191 NGE_RXFILTCTL_ALLMULTI); 2192 } else { 2193 ifp->if_flags &= ~IFF_RUNNING; 2194 nge_init(sc); 2195 } 2196 } else { 2197 if (ifp->if_flags & IFF_RUNNING) 2198 nge_stop(sc); 2199 } 2200 sc->nge_if_flags = ifp->if_flags; 2201 error = 0; 2202 break; 2203 case SIOCADDMULTI: 2204 case SIOCDELMULTI: 2205 nge_setmulti(sc); 2206 error = 0; 2207 break; 2208 case SIOCGIFMEDIA: 2209 case SIOCSIFMEDIA: 2210 if (sc->nge_tbi) { 2211 error = ifmedia_ioctl(ifp, ifr, &sc->nge_ifmedia, 2212 command); 2213 } else { 2214 mii = device_get_softc(sc->nge_miibus); 2215 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, 2216 command); 2217 } 2218 break; 2219 default: 2220 error = EINVAL; 2221 break; 2222 } 2223 2224 (void)splx(s); 2225 2226 return(error); 2227 } 2228 2229 static void nge_watchdog(ifp) 2230 struct ifnet *ifp; 2231 { 2232 struct nge_softc *sc; 2233 2234 sc = ifp->if_softc; 2235 2236 ifp->if_oerrors++; 2237 printf("nge%d: watchdog timeout\n", sc->nge_unit); 2238 2239 nge_stop(sc); 2240 nge_reset(sc); 2241 ifp->if_flags &= ~IFF_RUNNING; 2242 nge_init(sc); 2243 2244 if (ifp->if_snd.ifq_head != NULL) 2245 nge_start(ifp); 2246 2247 return; 2248 } 2249 2250 /* 2251 * Stop the adapter and free any mbufs allocated to the 2252 * RX and TX lists. 2253 */ 2254 static void nge_stop(sc) 2255 struct nge_softc *sc; 2256 { 2257 int i; 2258 struct ifnet *ifp; 2259 struct ifmedia_entry *ifm; 2260 struct mii_data *mii; 2261 int mtmp, itmp; 2262 2263 ifp = &sc->arpcom.ac_if; 2264 ifp->if_timer = 0; 2265 if (sc->nge_tbi) { 2266 mii = NULL; 2267 } else { 2268 mii = device_get_softc(sc->nge_miibus); 2269 } 2270 2271 callout_stop(&sc->nge_stat_timer); 2272 #ifdef DEVICE_POLLING 2273 ether_poll_deregister(ifp); 2274 #endif 2275 CSR_WRITE_4(sc, NGE_IER, 0); 2276 CSR_WRITE_4(sc, NGE_IMR, 0); 2277 NGE_SETBIT(sc, NGE_CSR, NGE_CSR_TX_DISABLE|NGE_CSR_RX_DISABLE); 2278 DELAY(1000); 2279 CSR_WRITE_4(sc, NGE_TX_LISTPTR, 0); 2280 CSR_WRITE_4(sc, NGE_RX_LISTPTR, 0); 2281 2282 /* 2283 * Isolate/power down the PHY, but leave the media selection 2284 * unchanged so that things will be put back to normal when 2285 * we bring the interface back up. 2286 */ 2287 itmp = ifp->if_flags; 2288 ifp->if_flags |= IFF_UP; 2289 2290 if (sc->nge_tbi) 2291 ifm = sc->nge_ifmedia.ifm_cur; 2292 else 2293 ifm = mii->mii_media.ifm_cur; 2294 2295 mtmp = ifm->ifm_media; 2296 ifm->ifm_media = IFM_ETHER|IFM_NONE; 2297 2298 if (!sc->nge_tbi) 2299 mii_mediachg(mii); 2300 ifm->ifm_media = mtmp; 2301 ifp->if_flags = itmp; 2302 2303 sc->nge_link = 0; 2304 2305 /* 2306 * Free data in the RX lists. 2307 */ 2308 for (i = 0; i < NGE_RX_LIST_CNT; i++) { 2309 if (sc->nge_ldata->nge_rx_list[i].nge_mbuf != NULL) { 2310 m_freem(sc->nge_ldata->nge_rx_list[i].nge_mbuf); 2311 sc->nge_ldata->nge_rx_list[i].nge_mbuf = NULL; 2312 } 2313 } 2314 bzero((char *)&sc->nge_ldata->nge_rx_list, 2315 sizeof(sc->nge_ldata->nge_rx_list)); 2316 2317 /* 2318 * Free the TX list buffers. 2319 */ 2320 for (i = 0; i < NGE_TX_LIST_CNT; i++) { 2321 if (sc->nge_ldata->nge_tx_list[i].nge_mbuf != NULL) { 2322 m_freem(sc->nge_ldata->nge_tx_list[i].nge_mbuf); 2323 sc->nge_ldata->nge_tx_list[i].nge_mbuf = NULL; 2324 } 2325 } 2326 2327 bzero((char *)&sc->nge_ldata->nge_tx_list, 2328 sizeof(sc->nge_ldata->nge_tx_list)); 2329 2330 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2331 2332 return; 2333 } 2334 2335 /* 2336 * Stop all chip I/O so that the kernel's probe routines don't 2337 * get confused by errant DMAs when rebooting. 2338 */ 2339 static void nge_shutdown(dev) 2340 device_t dev; 2341 { 2342 struct nge_softc *sc; 2343 2344 sc = device_get_softc(dev); 2345 2346 nge_reset(sc); 2347 nge_stop(sc); 2348 2349 return; 2350 } 2351