if_vr.c revision 211766
1/*- 2 * Copyright (c) 1997, 1998 3 * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Bill Paul. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: head/sys/dev/vr/if_vr.c 211766 2010-08-24 18:44:12Z yongari $"); 35 36/* 37 * VIA Rhine fast ethernet PCI NIC driver 38 * 39 * Supports various network adapters based on the VIA Rhine 40 * and Rhine II PCI controllers, including the D-Link DFE530TX. 41 * Datasheets are available at http://www.via.com.tw. 42 * 43 * Written by Bill Paul <wpaul@ctr.columbia.edu> 44 * Electrical Engineering Department 45 * Columbia University, New York City 46 */ 47 48/* 49 * The VIA Rhine controllers are similar in some respects to the 50 * the DEC tulip chips, except less complicated. The controller 51 * uses an MII bus and an external physical layer interface. The 52 * receiver has a one entry perfect filter and a 64-bit hash table 53 * multicast filter. Transmit and receive descriptors are similar 54 * to the tulip. 55 * 56 * Some Rhine chips has a serious flaw in its transmit DMA mechanism: 57 * transmit buffers must be longword aligned. Unfortunately, 58 * FreeBSD doesn't guarantee that mbufs will be filled in starting 59 * at longword boundaries, so we have to do a buffer copy before 60 * transmission. 61 */ 62 63#ifdef HAVE_KERNEL_OPTION_HEADERS 64#include "opt_device_polling.h" 65#endif 66 67#include <sys/param.h> 68#include <sys/systm.h> 69#include <sys/bus.h> 70#include <sys/endian.h> 71#include <sys/kernel.h> 72#include <sys/malloc.h> 73#include <sys/mbuf.h> 74#include <sys/module.h> 75#include <sys/rman.h> 76#include <sys/socket.h> 77#include <sys/sockio.h> 78#include <sys/sysctl.h> 79#include <sys/taskqueue.h> 80 81#include <net/bpf.h> 82#include <net/if.h> 83#include <net/ethernet.h> 84#include <net/if_dl.h> 85#include <net/if_media.h> 86#include <net/if_types.h> 87#include <net/if_vlan_var.h> 88 89#include <dev/mii/mii.h> 90#include <dev/mii/miivar.h> 91 92#include <dev/pci/pcireg.h> 93#include <dev/pci/pcivar.h> 94 95#include <machine/bus.h> 96 97#include <dev/vr/if_vrreg.h> 98 99/* "device miibus" required. See GENERIC if you get errors here. */ 100#include "miibus_if.h" 101 102MODULE_DEPEND(vr, pci, 1, 1, 1); 103MODULE_DEPEND(vr, ether, 1, 1, 1); 104MODULE_DEPEND(vr, miibus, 1, 1, 1); 105 106/* Define to show Rx/Tx error status. */ 107#undef VR_SHOW_ERRORS 108#define VR_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 109 110/* 111 * Various supported device vendors/types, their names & quirks. 112 */ 113#define VR_Q_NEEDALIGN (1<<0) 114#define VR_Q_CSUM (1<<1) 115#define VR_Q_CAM (1<<2) 116 117static struct vr_type { 118 u_int16_t vr_vid; 119 u_int16_t vr_did; 120 int vr_quirks; 121 char *vr_name; 122} vr_devs[] = { 123 { VIA_VENDORID, VIA_DEVICEID_RHINE, 124 VR_Q_NEEDALIGN, 125 "VIA VT3043 Rhine I 10/100BaseTX" }, 126 { VIA_VENDORID, VIA_DEVICEID_RHINE_II, 127 VR_Q_NEEDALIGN, 128 "VIA VT86C100A Rhine II 10/100BaseTX" }, 129 { VIA_VENDORID, VIA_DEVICEID_RHINE_II_2, 130 0, 131 "VIA VT6102 Rhine II 10/100BaseTX" }, 132 { VIA_VENDORID, VIA_DEVICEID_RHINE_III, 133 0, 134 "VIA VT6105 Rhine III 10/100BaseTX" }, 135 { VIA_VENDORID, VIA_DEVICEID_RHINE_III_M, 136 VR_Q_CSUM, 137 "VIA VT6105M Rhine III 10/100BaseTX" }, 138 { DELTA_VENDORID, DELTA_DEVICEID_RHINE_II, 139 VR_Q_NEEDALIGN, 140 "Delta Electronics Rhine II 10/100BaseTX" }, 141 { ADDTRON_VENDORID, ADDTRON_DEVICEID_RHINE_II, 142 VR_Q_NEEDALIGN, 143 "Addtron Technology Rhine II 10/100BaseTX" }, 144 { 0, 0, 0, NULL } 145}; 146 147static int vr_probe(device_t); 148static int vr_attach(device_t); 149static int vr_detach(device_t); 150static int vr_shutdown(device_t); 151static int vr_suspend(device_t); 152static int vr_resume(device_t); 153 154static void vr_dmamap_cb(void *, bus_dma_segment_t *, int, int); 155static int vr_dma_alloc(struct vr_softc *); 156static void vr_dma_free(struct vr_softc *); 157static __inline void vr_discard_rxbuf(struct vr_rxdesc *); 158static int vr_newbuf(struct vr_softc *, int); 159 160#ifndef __NO_STRICT_ALIGNMENT 161static __inline void vr_fixup_rx(struct mbuf *); 162#endif 163static int vr_rxeof(struct vr_softc *); 164static void vr_txeof(struct vr_softc *); 165static void vr_tick(void *); 166static int vr_error(struct vr_softc *, uint16_t); 167static void vr_tx_underrun(struct vr_softc *); 168static void vr_intr(void *); 169static void vr_start(struct ifnet *); 170static void vr_start_locked(struct ifnet *); 171static int vr_encap(struct vr_softc *, struct mbuf **); 172static int vr_ioctl(struct ifnet *, u_long, caddr_t); 173static void vr_init(void *); 174static void vr_init_locked(struct vr_softc *); 175static void vr_tx_start(struct vr_softc *); 176static void vr_rx_start(struct vr_softc *); 177static int vr_tx_stop(struct vr_softc *); 178static int vr_rx_stop(struct vr_softc *); 179static void vr_stop(struct vr_softc *); 180static void vr_watchdog(struct vr_softc *); 181static int vr_ifmedia_upd(struct ifnet *); 182static void vr_ifmedia_sts(struct ifnet *, struct ifmediareq *); 183 184static int vr_miibus_readreg(device_t, int, int); 185static int vr_miibus_writereg(device_t, int, int, int); 186static void vr_miibus_statchg(device_t); 187 188static void vr_link_task(void *, int); 189static void vr_cam_mask(struct vr_softc *, uint32_t, int); 190static int vr_cam_data(struct vr_softc *, int, int, uint8_t *); 191static void vr_set_filter(struct vr_softc *); 192static void vr_reset(const struct vr_softc *); 193static int vr_tx_ring_init(struct vr_softc *); 194static int vr_rx_ring_init(struct vr_softc *); 195static void vr_setwol(struct vr_softc *); 196static void vr_clrwol(struct vr_softc *); 197static int vr_sysctl_stats(SYSCTL_HANDLER_ARGS); 198 199static struct vr_tx_threshold_table { 200 int tx_cfg; 201 int bcr_cfg; 202 int value; 203} vr_tx_threshold_tables[] = { 204 { VR_TXTHRESH_64BYTES, VR_BCR1_TXTHRESH64BYTES, 64 }, 205 { VR_TXTHRESH_128BYTES, VR_BCR1_TXTHRESH128BYTES, 128 }, 206 { VR_TXTHRESH_256BYTES, VR_BCR1_TXTHRESH256BYTES, 256 }, 207 { VR_TXTHRESH_512BYTES, VR_BCR1_TXTHRESH512BYTES, 512 }, 208 { VR_TXTHRESH_1024BYTES, VR_BCR1_TXTHRESH1024BYTES, 1024 }, 209 { VR_TXTHRESH_STORENFWD, VR_BCR1_TXTHRESHSTORENFWD, 2048 } 210}; 211 212static device_method_t vr_methods[] = { 213 /* Device interface */ 214 DEVMETHOD(device_probe, vr_probe), 215 DEVMETHOD(device_attach, vr_attach), 216 DEVMETHOD(device_detach, vr_detach), 217 DEVMETHOD(device_shutdown, vr_shutdown), 218 DEVMETHOD(device_suspend, vr_suspend), 219 DEVMETHOD(device_resume, vr_resume), 220 221 /* bus interface */ 222 DEVMETHOD(bus_print_child, bus_generic_print_child), 223 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 224 225 /* MII interface */ 226 DEVMETHOD(miibus_readreg, vr_miibus_readreg), 227 DEVMETHOD(miibus_writereg, vr_miibus_writereg), 228 DEVMETHOD(miibus_statchg, vr_miibus_statchg), 229 DEVMETHOD(miibus_linkchg, vr_miibus_statchg), 230 231 { NULL, NULL } 232}; 233 234static driver_t vr_driver = { 235 "vr", 236 vr_methods, 237 sizeof(struct vr_softc) 238}; 239 240static devclass_t vr_devclass; 241 242DRIVER_MODULE(vr, pci, vr_driver, vr_devclass, 0, 0); 243DRIVER_MODULE(miibus, vr, miibus_driver, miibus_devclass, 0, 0); 244 245static int 246vr_miibus_readreg(device_t dev, int phy, int reg) 247{ 248 struct vr_softc *sc; 249 int i; 250 251 sc = device_get_softc(dev); 252 if (sc->vr_phyaddr != phy) 253 return (0); 254 255 /* Set the register address. */ 256 CSR_WRITE_1(sc, VR_MIIADDR, reg); 257 VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_READ_ENB); 258 259 for (i = 0; i < VR_MII_TIMEOUT; i++) { 260 DELAY(1); 261 if ((CSR_READ_1(sc, VR_MIICMD) & VR_MIICMD_READ_ENB) == 0) 262 break; 263 } 264 if (i == VR_MII_TIMEOUT) 265 device_printf(sc->vr_dev, "phy read timeout %d:%d\n", phy, reg); 266 267 return (CSR_READ_2(sc, VR_MIIDATA)); 268} 269 270static int 271vr_miibus_writereg(device_t dev, int phy, int reg, int data) 272{ 273 struct vr_softc *sc; 274 int i; 275 276 sc = device_get_softc(dev); 277 if (sc->vr_phyaddr != phy) 278 return (0); 279 280 /* Set the register address and data to write. */ 281 CSR_WRITE_1(sc, VR_MIIADDR, reg); 282 CSR_WRITE_2(sc, VR_MIIDATA, data); 283 VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_WRITE_ENB); 284 285 for (i = 0; i < VR_MII_TIMEOUT; i++) { 286 DELAY(1); 287 if ((CSR_READ_1(sc, VR_MIICMD) & VR_MIICMD_WRITE_ENB) == 0) 288 break; 289 } 290 if (i == VR_MII_TIMEOUT) 291 device_printf(sc->vr_dev, "phy write timeout %d:%d\n", phy, 292 reg); 293 294 return (0); 295} 296 297static void 298vr_miibus_statchg(device_t dev) 299{ 300 struct vr_softc *sc; 301 302 sc = device_get_softc(dev); 303 taskqueue_enqueue(taskqueue_swi, &sc->vr_link_task); 304} 305 306/* 307 * In order to fiddle with the 308 * 'full-duplex' and '100Mbps' bits in the netconfig register, we 309 * first have to put the transmit and/or receive logic in the idle state. 310 */ 311static void 312vr_link_task(void *arg, int pending) 313{ 314 struct vr_softc *sc; 315 struct mii_data *mii; 316 struct ifnet *ifp; 317 int lfdx, mfdx; 318 uint8_t cr0, cr1, fc; 319 320 sc = (struct vr_softc *)arg; 321 322 VR_LOCK(sc); 323 mii = device_get_softc(sc->vr_miibus); 324 ifp = sc->vr_ifp; 325 if (mii == NULL || ifp == NULL || 326 (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 327 VR_UNLOCK(sc); 328 return; 329 } 330 331 if (mii->mii_media_status & IFM_ACTIVE) { 332 if (IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) 333 sc->vr_link = 1; 334 } else 335 sc->vr_link = 0; 336 337 if (sc->vr_link != 0) { 338 cr0 = CSR_READ_1(sc, VR_CR0); 339 cr1 = CSR_READ_1(sc, VR_CR1); 340 mfdx = (cr1 & VR_CR1_FULLDUPLEX) != 0; 341 lfdx = (IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0; 342 if (mfdx != lfdx) { 343 if ((cr0 & (VR_CR0_TX_ON | VR_CR0_RX_ON)) != 0) { 344 if (vr_tx_stop(sc) != 0 || 345 vr_rx_stop(sc) != 0) { 346 device_printf(sc->vr_dev, 347 "%s: Tx/Rx shutdown error -- " 348 "resetting\n", __func__); 349 sc->vr_flags |= VR_F_RESTART; 350 VR_UNLOCK(sc); 351 return; 352 } 353 } 354 if (lfdx) 355 cr1 |= VR_CR1_FULLDUPLEX; 356 else 357 cr1 &= ~VR_CR1_FULLDUPLEX; 358 CSR_WRITE_1(sc, VR_CR1, cr1); 359 } 360 fc = 0; 361#ifdef notyet 362 /* Configure flow-control. */ 363 if (sc->vr_revid >= REV_ID_VT6105_A0) { 364 fc = CSR_READ_1(sc, VR_FLOWCR1); 365 fc &= ~(VR_FLOWCR1_TXPAUSE | VR_FLOWCR1_RXPAUSE); 366 if ((IFM_OPTIONS(mii->mii_media_active) & 367 IFM_ETH_RXPAUSE) != 0) 368 fc |= VR_FLOWCR1_RXPAUSE; 369 if ((IFM_OPTIONS(mii->mii_media_active) & 370 IFM_ETH_TXPAUSE) != 0) 371 fc |= VR_FLOWCR1_TXPAUSE; 372 CSR_WRITE_1(sc, VR_FLOWCR1, fc); 373 } else if (sc->vr_revid >= REV_ID_VT6102_A) { 374 /* No Tx puase capability available for Rhine II. */ 375 fc = CSR_READ_1(sc, VR_MISC_CR0); 376 fc &= ~VR_MISCCR0_RXPAUSE; 377 if ((IFM_OPTIONS(mii->mii_media_active) & 378 IFM_ETH_RXPAUSE) != 0) 379 fc |= VR_MISCCR0_RXPAUSE; 380 CSR_WRITE_1(sc, VR_MISC_CR0, fc); 381 } 382#endif 383 vr_rx_start(sc); 384 vr_tx_start(sc); 385 } else { 386 if (vr_tx_stop(sc) != 0 || vr_rx_stop(sc) != 0) { 387 device_printf(sc->vr_dev, 388 "%s: Tx/Rx shutdown error -- resetting\n", 389 __func__); 390 sc->vr_flags |= VR_F_RESTART; 391 VR_UNLOCK(sc); 392 return; 393 } 394 } 395 VR_UNLOCK(sc); 396} 397 398 399static void 400vr_cam_mask(struct vr_softc *sc, uint32_t mask, int type) 401{ 402 403 if (type == VR_MCAST_CAM) 404 CSR_WRITE_1(sc, VR_CAMCTL, VR_CAMCTL_ENA | VR_CAMCTL_MCAST); 405 else 406 CSR_WRITE_1(sc, VR_CAMCTL, VR_CAMCTL_ENA | VR_CAMCTL_VLAN); 407 CSR_WRITE_4(sc, VR_CAMMASK, mask); 408 CSR_WRITE_1(sc, VR_CAMCTL, 0); 409} 410 411static int 412vr_cam_data(struct vr_softc *sc, int type, int idx, uint8_t *mac) 413{ 414 int i; 415 416 if (type == VR_MCAST_CAM) { 417 if (idx < 0 || idx >= VR_CAM_MCAST_CNT || mac == NULL) 418 return (EINVAL); 419 CSR_WRITE_1(sc, VR_CAMCTL, VR_CAMCTL_ENA | VR_CAMCTL_MCAST); 420 } else 421 CSR_WRITE_1(sc, VR_CAMCTL, VR_CAMCTL_ENA | VR_CAMCTL_VLAN); 422 423 /* Set CAM entry address. */ 424 CSR_WRITE_1(sc, VR_CAMADDR, idx); 425 /* Set CAM entry data. */ 426 if (type == VR_MCAST_CAM) { 427 for (i = 0; i < ETHER_ADDR_LEN; i++) 428 CSR_WRITE_1(sc, VR_MCAM0 + i, mac[i]); 429 } else { 430 CSR_WRITE_1(sc, VR_VCAM0, mac[0]); 431 CSR_WRITE_1(sc, VR_VCAM1, mac[1]); 432 } 433 DELAY(10); 434 /* Write CAM and wait for self-clear of VR_CAMCTL_WRITE bit. */ 435 CSR_WRITE_1(sc, VR_CAMCTL, VR_CAMCTL_ENA | VR_CAMCTL_WRITE); 436 for (i = 0; i < VR_TIMEOUT; i++) { 437 DELAY(1); 438 if ((CSR_READ_1(sc, VR_CAMCTL) & VR_CAMCTL_WRITE) == 0) 439 break; 440 } 441 442 if (i == VR_TIMEOUT) 443 device_printf(sc->vr_dev, "%s: setting CAM filter timeout!\n", 444 __func__); 445 CSR_WRITE_1(sc, VR_CAMCTL, 0); 446 447 return (i == VR_TIMEOUT ? ETIMEDOUT : 0); 448} 449 450/* 451 * Program the 64-bit multicast hash filter. 452 */ 453static void 454vr_set_filter(struct vr_softc *sc) 455{ 456 struct ifnet *ifp; 457 int h; 458 uint32_t hashes[2] = { 0, 0 }; 459 struct ifmultiaddr *ifma; 460 uint8_t rxfilt; 461 int error, mcnt; 462 uint32_t cam_mask; 463 464 VR_LOCK_ASSERT(sc); 465 466 ifp = sc->vr_ifp; 467 rxfilt = CSR_READ_1(sc, VR_RXCFG); 468 rxfilt &= ~(VR_RXCFG_RX_PROMISC | VR_RXCFG_RX_BROAD | 469 VR_RXCFG_RX_MULTI); 470 if (ifp->if_flags & IFF_BROADCAST) 471 rxfilt |= VR_RXCFG_RX_BROAD; 472 if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { 473 rxfilt |= VR_RXCFG_RX_MULTI; 474 if (ifp->if_flags & IFF_PROMISC) 475 rxfilt |= VR_RXCFG_RX_PROMISC; 476 CSR_WRITE_1(sc, VR_RXCFG, rxfilt); 477 CSR_WRITE_4(sc, VR_MAR0, 0xFFFFFFFF); 478 CSR_WRITE_4(sc, VR_MAR1, 0xFFFFFFFF); 479 return; 480 } 481 482 /* Now program new ones. */ 483 error = 0; 484 mcnt = 0; 485 if_maddr_rlock(ifp); 486 if ((sc->vr_quirks & VR_Q_CAM) != 0) { 487 /* 488 * For hardwares that have CAM capability, use 489 * 32 entries multicast perfect filter. 490 */ 491 cam_mask = 0; 492 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 493 if (ifma->ifma_addr->sa_family != AF_LINK) 494 continue; 495 error = vr_cam_data(sc, VR_MCAST_CAM, mcnt, 496 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 497 if (error != 0) { 498 cam_mask = 0; 499 break; 500 } 501 cam_mask |= 1 << mcnt; 502 mcnt++; 503 } 504 vr_cam_mask(sc, VR_MCAST_CAM, cam_mask); 505 } 506 507 if ((sc->vr_quirks & VR_Q_CAM) == 0 || error != 0) { 508 /* 509 * If there are too many multicast addresses or 510 * setting multicast CAM filter failed, use hash 511 * table based filtering. 512 */ 513 mcnt = 0; 514 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 515 if (ifma->ifma_addr->sa_family != AF_LINK) 516 continue; 517 h = ether_crc32_be(LLADDR((struct sockaddr_dl *) 518 ifma->ifma_addr), ETHER_ADDR_LEN) >> 26; 519 if (h < 32) 520 hashes[0] |= (1 << h); 521 else 522 hashes[1] |= (1 << (h - 32)); 523 mcnt++; 524 } 525 } 526 if_maddr_runlock(ifp); 527 528 if (mcnt > 0) 529 rxfilt |= VR_RXCFG_RX_MULTI; 530 531 CSR_WRITE_4(sc, VR_MAR0, hashes[0]); 532 CSR_WRITE_4(sc, VR_MAR1, hashes[1]); 533 CSR_WRITE_1(sc, VR_RXCFG, rxfilt); 534} 535 536static void 537vr_reset(const struct vr_softc *sc) 538{ 539 int i; 540 541 /*VR_LOCK_ASSERT(sc);*/ /* XXX: Called during attach w/o lock. */ 542 543 CSR_WRITE_1(sc, VR_CR1, VR_CR1_RESET); 544 if (sc->vr_revid < REV_ID_VT6102_A) { 545 /* VT86C100A needs more delay after reset. */ 546 DELAY(100); 547 } 548 for (i = 0; i < VR_TIMEOUT; i++) { 549 DELAY(10); 550 if (!(CSR_READ_1(sc, VR_CR1) & VR_CR1_RESET)) 551 break; 552 } 553 if (i == VR_TIMEOUT) { 554 if (sc->vr_revid < REV_ID_VT6102_A) 555 device_printf(sc->vr_dev, "reset never completed!\n"); 556 else { 557 /* Use newer force reset command. */ 558 device_printf(sc->vr_dev, 559 "Using force reset command.\n"); 560 VR_SETBIT(sc, VR_MISC_CR1, VR_MISCCR1_FORSRST); 561 /* 562 * Wait a little while for the chip to get its brains 563 * in order. 564 */ 565 DELAY(2000); 566 } 567 } 568 569} 570 571/* 572 * Probe for a VIA Rhine chip. Check the PCI vendor and device 573 * IDs against our list and return a match or NULL 574 */ 575static struct vr_type * 576vr_match(device_t dev) 577{ 578 struct vr_type *t = vr_devs; 579 580 for (t = vr_devs; t->vr_name != NULL; t++) 581 if ((pci_get_vendor(dev) == t->vr_vid) && 582 (pci_get_device(dev) == t->vr_did)) 583 return (t); 584 return (NULL); 585} 586 587/* 588 * Probe for a VIA Rhine chip. Check the PCI vendor and device 589 * IDs against our list and return a device name if we find a match. 590 */ 591static int 592vr_probe(device_t dev) 593{ 594 struct vr_type *t; 595 596 t = vr_match(dev); 597 if (t != NULL) { 598 device_set_desc(dev, t->vr_name); 599 return (BUS_PROBE_DEFAULT); 600 } 601 return (ENXIO); 602} 603 604/* 605 * Attach the interface. Allocate softc structures, do ifmedia 606 * setup and ethernet/BPF attach. 607 */ 608static int 609vr_attach(device_t dev) 610{ 611 struct vr_softc *sc; 612 struct ifnet *ifp; 613 struct vr_type *t; 614 uint8_t eaddr[ETHER_ADDR_LEN]; 615 int error, rid; 616 int i, pmc; 617 618 sc = device_get_softc(dev); 619 sc->vr_dev = dev; 620 t = vr_match(dev); 621 KASSERT(t != NULL, ("Lost if_vr device match")); 622 sc->vr_quirks = t->vr_quirks; 623 device_printf(dev, "Quirks: 0x%x\n", sc->vr_quirks); 624 625 mtx_init(&sc->vr_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 626 MTX_DEF); 627 callout_init_mtx(&sc->vr_stat_callout, &sc->vr_mtx, 0); 628 TASK_INIT(&sc->vr_link_task, 0, vr_link_task, sc); 629 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 630 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 631 OID_AUTO, "stats", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 632 vr_sysctl_stats, "I", "Statistics"); 633 634 error = 0; 635 636 /* 637 * Map control/status registers. 638 */ 639 pci_enable_busmaster(dev); 640 sc->vr_revid = pci_get_revid(dev); 641 device_printf(dev, "Revision: 0x%x\n", sc->vr_revid); 642 643 sc->vr_res_id = PCIR_BAR(0); 644 sc->vr_res_type = SYS_RES_IOPORT; 645 sc->vr_res = bus_alloc_resource_any(dev, sc->vr_res_type, 646 &sc->vr_res_id, RF_ACTIVE); 647 if (sc->vr_res == NULL) { 648 device_printf(dev, "couldn't map ports\n"); 649 error = ENXIO; 650 goto fail; 651 } 652 653 /* Allocate interrupt. */ 654 rid = 0; 655 sc->vr_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 656 RF_SHAREABLE | RF_ACTIVE); 657 658 if (sc->vr_irq == NULL) { 659 device_printf(dev, "couldn't map interrupt\n"); 660 error = ENXIO; 661 goto fail; 662 } 663 664 /* Allocate ifnet structure. */ 665 ifp = sc->vr_ifp = if_alloc(IFT_ETHER); 666 if (ifp == NULL) { 667 device_printf(dev, "couldn't allocate ifnet structure\n"); 668 error = ENOSPC; 669 goto fail; 670 } 671 ifp->if_softc = sc; 672 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 673 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 674 ifp->if_ioctl = vr_ioctl; 675 ifp->if_start = vr_start; 676 ifp->if_init = vr_init; 677 IFQ_SET_MAXLEN(&ifp->if_snd, VR_TX_RING_CNT - 1); 678 ifp->if_snd.ifq_maxlen = VR_TX_RING_CNT - 1; 679 IFQ_SET_READY(&ifp->if_snd); 680 681 /* Configure Tx FIFO threshold. */ 682 sc->vr_txthresh = VR_TXTHRESH_MIN; 683 if (sc->vr_revid < REV_ID_VT6105_A0) { 684 /* 685 * Use store and forward mode for Rhine I/II. 686 * Otherwise they produce a lot of Tx underruns and 687 * it would take a while to get working FIFO threshold 688 * value. 689 */ 690 sc->vr_txthresh = VR_TXTHRESH_MAX; 691 } 692 if ((sc->vr_quirks & VR_Q_CSUM) != 0) { 693 ifp->if_hwassist = VR_CSUM_FEATURES; 694 ifp->if_capabilities |= IFCAP_HWCSUM; 695 /* 696 * To update checksum field the hardware may need to 697 * store entire frames into FIFO before transmitting. 698 */ 699 sc->vr_txthresh = VR_TXTHRESH_MAX; 700 } 701 702 if (sc->vr_revid >= REV_ID_VT6102_A && 703 pci_find_extcap(dev, PCIY_PMG, &pmc) == 0) 704 ifp->if_capabilities |= IFCAP_WOL_UCAST | IFCAP_WOL_MAGIC; 705 706 /* Rhine supports oversized VLAN frame. */ 707 ifp->if_capabilities |= IFCAP_VLAN_MTU; 708 ifp->if_capenable = ifp->if_capabilities; 709#ifdef DEVICE_POLLING 710 ifp->if_capabilities |= IFCAP_POLLING; 711#endif 712 713 /* 714 * Windows may put the chip in suspend mode when it 715 * shuts down. Be sure to kick it in the head to wake it 716 * up again. 717 */ 718 if (pci_find_extcap(dev, PCIY_PMG, &pmc) == 0) 719 VR_CLRBIT(sc, VR_STICKHW, (VR_STICKHW_DS0|VR_STICKHW_DS1)); 720 721 /* 722 * Get station address. The way the Rhine chips work, 723 * you're not allowed to directly access the EEPROM once 724 * they've been programmed a special way. Consequently, 725 * we need to read the node address from the PAR0 and PAR1 726 * registers. 727 * Reloading EEPROM also overwrites VR_CFGA, VR_CFGB, 728 * VR_CFGC and VR_CFGD such that memory mapped IO configured 729 * by driver is reset to default state. 730 */ 731 VR_SETBIT(sc, VR_EECSR, VR_EECSR_LOAD); 732 for (i = VR_TIMEOUT; i > 0; i--) { 733 DELAY(1); 734 if ((CSR_READ_1(sc, VR_EECSR) & VR_EECSR_LOAD) == 0) 735 break; 736 } 737 if (i == 0) 738 device_printf(dev, "Reloading EEPROM timeout!\n"); 739 for (i = 0; i < ETHER_ADDR_LEN; i++) 740 eaddr[i] = CSR_READ_1(sc, VR_PAR0 + i); 741 742 /* Reset the adapter. */ 743 vr_reset(sc); 744 /* Ack intr & disable further interrupts. */ 745 CSR_WRITE_2(sc, VR_ISR, 0xFFFF); 746 CSR_WRITE_2(sc, VR_IMR, 0); 747 if (sc->vr_revid >= REV_ID_VT6102_A) 748 CSR_WRITE_2(sc, VR_MII_IMR, 0); 749 750 if (sc->vr_revid < REV_ID_VT6102_A) { 751 pci_write_config(dev, VR_PCI_MODE2, 752 pci_read_config(dev, VR_PCI_MODE2, 1) | 753 VR_MODE2_MODE10T, 1); 754 } else { 755 /* Report error instead of retrying forever. */ 756 pci_write_config(dev, VR_PCI_MODE2, 757 pci_read_config(dev, VR_PCI_MODE2, 1) | 758 VR_MODE2_PCEROPT, 1); 759 /* Detect MII coding error. */ 760 pci_write_config(dev, VR_PCI_MODE3, 761 pci_read_config(dev, VR_PCI_MODE3, 1) | 762 VR_MODE3_MIION, 1); 763 if (sc->vr_revid >= REV_ID_VT6105_LOM && 764 sc->vr_revid < REV_ID_VT6105M_A0) 765 pci_write_config(dev, VR_PCI_MODE2, 766 pci_read_config(dev, VR_PCI_MODE2, 1) | 767 VR_MODE2_MODE10T, 1); 768 /* Enable Memory-Read-Multiple. */ 769 if (sc->vr_revid >= REV_ID_VT6107_A1 && 770 sc->vr_revid < REV_ID_VT6105M_A0) 771 pci_write_config(dev, VR_PCI_MODE2, 772 pci_read_config(dev, VR_PCI_MODE2, 1) | 773 VR_MODE2_MRDPL, 1); 774 } 775 /* Disable MII AUTOPOLL. */ 776 VR_CLRBIT(sc, VR_MIICMD, VR_MIICMD_AUTOPOLL); 777 778 if (vr_dma_alloc(sc) != 0) { 779 error = ENXIO; 780 goto fail; 781 } 782 783 /* Save PHY address. */ 784 if (sc->vr_revid >= REV_ID_VT6105_A0) 785 sc->vr_phyaddr = 1; 786 else 787 sc->vr_phyaddr = CSR_READ_1(sc, VR_PHYADDR) & VR_PHYADDR_MASK; 788 789 /* Do MII setup. */ 790 if (mii_phy_probe(dev, &sc->vr_miibus, 791 vr_ifmedia_upd, vr_ifmedia_sts)) { 792 device_printf(dev, "MII without any phy!\n"); 793 error = ENXIO; 794 goto fail; 795 } 796 797 /* Call MI attach routine. */ 798 ether_ifattach(ifp, eaddr); 799 /* 800 * Tell the upper layer(s) we support long frames. 801 * Must appear after the call to ether_ifattach() because 802 * ether_ifattach() sets ifi_hdrlen to the default value. 803 */ 804 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 805 806 /* Hook interrupt last to avoid having to lock softc. */ 807 error = bus_setup_intr(dev, sc->vr_irq, INTR_TYPE_NET | INTR_MPSAFE, 808 NULL, vr_intr, sc, &sc->vr_intrhand); 809 810 if (error) { 811 device_printf(dev, "couldn't set up irq\n"); 812 ether_ifdetach(ifp); 813 goto fail; 814 } 815 816fail: 817 if (error) 818 vr_detach(dev); 819 820 return (error); 821} 822 823/* 824 * Shutdown hardware and free up resources. This can be called any 825 * time after the mutex has been initialized. It is called in both 826 * the error case in attach and the normal detach case so it needs 827 * to be careful about only freeing resources that have actually been 828 * allocated. 829 */ 830static int 831vr_detach(device_t dev) 832{ 833 struct vr_softc *sc = device_get_softc(dev); 834 struct ifnet *ifp = sc->vr_ifp; 835 836 KASSERT(mtx_initialized(&sc->vr_mtx), ("vr mutex not initialized")); 837 838#ifdef DEVICE_POLLING 839 if (ifp != NULL && ifp->if_capenable & IFCAP_POLLING) 840 ether_poll_deregister(ifp); 841#endif 842 843 /* These should only be active if attach succeeded. */ 844 if (device_is_attached(dev)) { 845 VR_LOCK(sc); 846 sc->vr_detach = 1; 847 vr_stop(sc); 848 VR_UNLOCK(sc); 849 callout_drain(&sc->vr_stat_callout); 850 taskqueue_drain(taskqueue_swi, &sc->vr_link_task); 851 ether_ifdetach(ifp); 852 } 853 if (sc->vr_miibus) 854 device_delete_child(dev, sc->vr_miibus); 855 bus_generic_detach(dev); 856 857 if (sc->vr_intrhand) 858 bus_teardown_intr(dev, sc->vr_irq, sc->vr_intrhand); 859 if (sc->vr_irq) 860 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->vr_irq); 861 if (sc->vr_res) 862 bus_release_resource(dev, sc->vr_res_type, sc->vr_res_id, 863 sc->vr_res); 864 865 if (ifp) 866 if_free(ifp); 867 868 vr_dma_free(sc); 869 870 mtx_destroy(&sc->vr_mtx); 871 872 return (0); 873} 874 875struct vr_dmamap_arg { 876 bus_addr_t vr_busaddr; 877}; 878 879static void 880vr_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 881{ 882 struct vr_dmamap_arg *ctx; 883 884 if (error != 0) 885 return; 886 ctx = arg; 887 ctx->vr_busaddr = segs[0].ds_addr; 888} 889 890static int 891vr_dma_alloc(struct vr_softc *sc) 892{ 893 struct vr_dmamap_arg ctx; 894 struct vr_txdesc *txd; 895 struct vr_rxdesc *rxd; 896 bus_size_t tx_alignment; 897 int error, i; 898 899 /* Create parent DMA tag. */ 900 error = bus_dma_tag_create( 901 bus_get_dma_tag(sc->vr_dev), /* parent */ 902 1, 0, /* alignment, boundary */ 903 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 904 BUS_SPACE_MAXADDR, /* highaddr */ 905 NULL, NULL, /* filter, filterarg */ 906 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 907 0, /* nsegments */ 908 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 909 0, /* flags */ 910 NULL, NULL, /* lockfunc, lockarg */ 911 &sc->vr_cdata.vr_parent_tag); 912 if (error != 0) { 913 device_printf(sc->vr_dev, "failed to create parent DMA tag\n"); 914 goto fail; 915 } 916 /* Create tag for Tx ring. */ 917 error = bus_dma_tag_create( 918 sc->vr_cdata.vr_parent_tag, /* parent */ 919 VR_RING_ALIGN, 0, /* alignment, boundary */ 920 BUS_SPACE_MAXADDR, /* lowaddr */ 921 BUS_SPACE_MAXADDR, /* highaddr */ 922 NULL, NULL, /* filter, filterarg */ 923 VR_TX_RING_SIZE, /* maxsize */ 924 1, /* nsegments */ 925 VR_TX_RING_SIZE, /* maxsegsize */ 926 0, /* flags */ 927 NULL, NULL, /* lockfunc, lockarg */ 928 &sc->vr_cdata.vr_tx_ring_tag); 929 if (error != 0) { 930 device_printf(sc->vr_dev, "failed to create Tx ring DMA tag\n"); 931 goto fail; 932 } 933 934 /* Create tag for Rx ring. */ 935 error = bus_dma_tag_create( 936 sc->vr_cdata.vr_parent_tag, /* parent */ 937 VR_RING_ALIGN, 0, /* alignment, boundary */ 938 BUS_SPACE_MAXADDR, /* lowaddr */ 939 BUS_SPACE_MAXADDR, /* highaddr */ 940 NULL, NULL, /* filter, filterarg */ 941 VR_RX_RING_SIZE, /* maxsize */ 942 1, /* nsegments */ 943 VR_RX_RING_SIZE, /* maxsegsize */ 944 0, /* flags */ 945 NULL, NULL, /* lockfunc, lockarg */ 946 &sc->vr_cdata.vr_rx_ring_tag); 947 if (error != 0) { 948 device_printf(sc->vr_dev, "failed to create Rx ring DMA tag\n"); 949 goto fail; 950 } 951 952 if ((sc->vr_quirks & VR_Q_NEEDALIGN) != 0) 953 tx_alignment = sizeof(uint32_t); 954 else 955 tx_alignment = 1; 956 /* Create tag for Tx buffers. */ 957 error = bus_dma_tag_create( 958 sc->vr_cdata.vr_parent_tag, /* parent */ 959 tx_alignment, 0, /* alignment, boundary */ 960 BUS_SPACE_MAXADDR, /* lowaddr */ 961 BUS_SPACE_MAXADDR, /* highaddr */ 962 NULL, NULL, /* filter, filterarg */ 963 MCLBYTES * VR_MAXFRAGS, /* maxsize */ 964 VR_MAXFRAGS, /* nsegments */ 965 MCLBYTES, /* maxsegsize */ 966 0, /* flags */ 967 NULL, NULL, /* lockfunc, lockarg */ 968 &sc->vr_cdata.vr_tx_tag); 969 if (error != 0) { 970 device_printf(sc->vr_dev, "failed to create Tx DMA tag\n"); 971 goto fail; 972 } 973 974 /* Create tag for Rx buffers. */ 975 error = bus_dma_tag_create( 976 sc->vr_cdata.vr_parent_tag, /* parent */ 977 VR_RX_ALIGN, 0, /* alignment, boundary */ 978 BUS_SPACE_MAXADDR, /* lowaddr */ 979 BUS_SPACE_MAXADDR, /* highaddr */ 980 NULL, NULL, /* filter, filterarg */ 981 MCLBYTES, /* maxsize */ 982 1, /* nsegments */ 983 MCLBYTES, /* maxsegsize */ 984 0, /* flags */ 985 NULL, NULL, /* lockfunc, lockarg */ 986 &sc->vr_cdata.vr_rx_tag); 987 if (error != 0) { 988 device_printf(sc->vr_dev, "failed to create Rx DMA tag\n"); 989 goto fail; 990 } 991 992 /* Allocate DMA'able memory and load the DMA map for Tx ring. */ 993 error = bus_dmamem_alloc(sc->vr_cdata.vr_tx_ring_tag, 994 (void **)&sc->vr_rdata.vr_tx_ring, BUS_DMA_WAITOK | 995 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->vr_cdata.vr_tx_ring_map); 996 if (error != 0) { 997 device_printf(sc->vr_dev, 998 "failed to allocate DMA'able memory for Tx ring\n"); 999 goto fail; 1000 } 1001 1002 ctx.vr_busaddr = 0; 1003 error = bus_dmamap_load(sc->vr_cdata.vr_tx_ring_tag, 1004 sc->vr_cdata.vr_tx_ring_map, sc->vr_rdata.vr_tx_ring, 1005 VR_TX_RING_SIZE, vr_dmamap_cb, &ctx, 0); 1006 if (error != 0 || ctx.vr_busaddr == 0) { 1007 device_printf(sc->vr_dev, 1008 "failed to load DMA'able memory for Tx ring\n"); 1009 goto fail; 1010 } 1011 sc->vr_rdata.vr_tx_ring_paddr = ctx.vr_busaddr; 1012 1013 /* Allocate DMA'able memory and load the DMA map for Rx ring. */ 1014 error = bus_dmamem_alloc(sc->vr_cdata.vr_rx_ring_tag, 1015 (void **)&sc->vr_rdata.vr_rx_ring, BUS_DMA_WAITOK | 1016 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->vr_cdata.vr_rx_ring_map); 1017 if (error != 0) { 1018 device_printf(sc->vr_dev, 1019 "failed to allocate DMA'able memory for Rx ring\n"); 1020 goto fail; 1021 } 1022 1023 ctx.vr_busaddr = 0; 1024 error = bus_dmamap_load(sc->vr_cdata.vr_rx_ring_tag, 1025 sc->vr_cdata.vr_rx_ring_map, sc->vr_rdata.vr_rx_ring, 1026 VR_RX_RING_SIZE, vr_dmamap_cb, &ctx, 0); 1027 if (error != 0 || ctx.vr_busaddr == 0) { 1028 device_printf(sc->vr_dev, 1029 "failed to load DMA'able memory for Rx ring\n"); 1030 goto fail; 1031 } 1032 sc->vr_rdata.vr_rx_ring_paddr = ctx.vr_busaddr; 1033 1034 /* Create DMA maps for Tx buffers. */ 1035 for (i = 0; i < VR_TX_RING_CNT; i++) { 1036 txd = &sc->vr_cdata.vr_txdesc[i]; 1037 txd->tx_m = NULL; 1038 txd->tx_dmamap = NULL; 1039 error = bus_dmamap_create(sc->vr_cdata.vr_tx_tag, 0, 1040 &txd->tx_dmamap); 1041 if (error != 0) { 1042 device_printf(sc->vr_dev, 1043 "failed to create Tx dmamap\n"); 1044 goto fail; 1045 } 1046 } 1047 /* Create DMA maps for Rx buffers. */ 1048 if ((error = bus_dmamap_create(sc->vr_cdata.vr_rx_tag, 0, 1049 &sc->vr_cdata.vr_rx_sparemap)) != 0) { 1050 device_printf(sc->vr_dev, 1051 "failed to create spare Rx dmamap\n"); 1052 goto fail; 1053 } 1054 for (i = 0; i < VR_RX_RING_CNT; i++) { 1055 rxd = &sc->vr_cdata.vr_rxdesc[i]; 1056 rxd->rx_m = NULL; 1057 rxd->rx_dmamap = NULL; 1058 error = bus_dmamap_create(sc->vr_cdata.vr_rx_tag, 0, 1059 &rxd->rx_dmamap); 1060 if (error != 0) { 1061 device_printf(sc->vr_dev, 1062 "failed to create Rx dmamap\n"); 1063 goto fail; 1064 } 1065 } 1066 1067fail: 1068 return (error); 1069} 1070 1071static void 1072vr_dma_free(struct vr_softc *sc) 1073{ 1074 struct vr_txdesc *txd; 1075 struct vr_rxdesc *rxd; 1076 int i; 1077 1078 /* Tx ring. */ 1079 if (sc->vr_cdata.vr_tx_ring_tag) { 1080 if (sc->vr_cdata.vr_tx_ring_map) 1081 bus_dmamap_unload(sc->vr_cdata.vr_tx_ring_tag, 1082 sc->vr_cdata.vr_tx_ring_map); 1083 if (sc->vr_cdata.vr_tx_ring_map && 1084 sc->vr_rdata.vr_tx_ring) 1085 bus_dmamem_free(sc->vr_cdata.vr_tx_ring_tag, 1086 sc->vr_rdata.vr_tx_ring, 1087 sc->vr_cdata.vr_tx_ring_map); 1088 sc->vr_rdata.vr_tx_ring = NULL; 1089 sc->vr_cdata.vr_tx_ring_map = NULL; 1090 bus_dma_tag_destroy(sc->vr_cdata.vr_tx_ring_tag); 1091 sc->vr_cdata.vr_tx_ring_tag = NULL; 1092 } 1093 /* Rx ring. */ 1094 if (sc->vr_cdata.vr_rx_ring_tag) { 1095 if (sc->vr_cdata.vr_rx_ring_map) 1096 bus_dmamap_unload(sc->vr_cdata.vr_rx_ring_tag, 1097 sc->vr_cdata.vr_rx_ring_map); 1098 if (sc->vr_cdata.vr_rx_ring_map && 1099 sc->vr_rdata.vr_rx_ring) 1100 bus_dmamem_free(sc->vr_cdata.vr_rx_ring_tag, 1101 sc->vr_rdata.vr_rx_ring, 1102 sc->vr_cdata.vr_rx_ring_map); 1103 sc->vr_rdata.vr_rx_ring = NULL; 1104 sc->vr_cdata.vr_rx_ring_map = NULL; 1105 bus_dma_tag_destroy(sc->vr_cdata.vr_rx_ring_tag); 1106 sc->vr_cdata.vr_rx_ring_tag = NULL; 1107 } 1108 /* Tx buffers. */ 1109 if (sc->vr_cdata.vr_tx_tag) { 1110 for (i = 0; i < VR_TX_RING_CNT; i++) { 1111 txd = &sc->vr_cdata.vr_txdesc[i]; 1112 if (txd->tx_dmamap) { 1113 bus_dmamap_destroy(sc->vr_cdata.vr_tx_tag, 1114 txd->tx_dmamap); 1115 txd->tx_dmamap = NULL; 1116 } 1117 } 1118 bus_dma_tag_destroy(sc->vr_cdata.vr_tx_tag); 1119 sc->vr_cdata.vr_tx_tag = NULL; 1120 } 1121 /* Rx buffers. */ 1122 if (sc->vr_cdata.vr_rx_tag) { 1123 for (i = 0; i < VR_RX_RING_CNT; i++) { 1124 rxd = &sc->vr_cdata.vr_rxdesc[i]; 1125 if (rxd->rx_dmamap) { 1126 bus_dmamap_destroy(sc->vr_cdata.vr_rx_tag, 1127 rxd->rx_dmamap); 1128 rxd->rx_dmamap = NULL; 1129 } 1130 } 1131 if (sc->vr_cdata.vr_rx_sparemap) { 1132 bus_dmamap_destroy(sc->vr_cdata.vr_rx_tag, 1133 sc->vr_cdata.vr_rx_sparemap); 1134 sc->vr_cdata.vr_rx_sparemap = 0; 1135 } 1136 bus_dma_tag_destroy(sc->vr_cdata.vr_rx_tag); 1137 sc->vr_cdata.vr_rx_tag = NULL; 1138 } 1139 1140 if (sc->vr_cdata.vr_parent_tag) { 1141 bus_dma_tag_destroy(sc->vr_cdata.vr_parent_tag); 1142 sc->vr_cdata.vr_parent_tag = NULL; 1143 } 1144} 1145 1146/* 1147 * Initialize the transmit descriptors. 1148 */ 1149static int 1150vr_tx_ring_init(struct vr_softc *sc) 1151{ 1152 struct vr_ring_data *rd; 1153 struct vr_txdesc *txd; 1154 bus_addr_t addr; 1155 int i; 1156 1157 sc->vr_cdata.vr_tx_prod = 0; 1158 sc->vr_cdata.vr_tx_cons = 0; 1159 sc->vr_cdata.vr_tx_cnt = 0; 1160 sc->vr_cdata.vr_tx_pkts = 0; 1161 1162 rd = &sc->vr_rdata; 1163 bzero(rd->vr_tx_ring, VR_TX_RING_SIZE); 1164 for (i = 0; i < VR_TX_RING_CNT; i++) { 1165 if (i == VR_TX_RING_CNT - 1) 1166 addr = VR_TX_RING_ADDR(sc, 0); 1167 else 1168 addr = VR_TX_RING_ADDR(sc, i + 1); 1169 rd->vr_tx_ring[i].vr_nextphys = htole32(VR_ADDR_LO(addr)); 1170 txd = &sc->vr_cdata.vr_txdesc[i]; 1171 txd->tx_m = NULL; 1172 } 1173 1174 bus_dmamap_sync(sc->vr_cdata.vr_tx_ring_tag, 1175 sc->vr_cdata.vr_tx_ring_map, 1176 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1177 1178 return (0); 1179} 1180 1181/* 1182 * Initialize the RX descriptors and allocate mbufs for them. Note that 1183 * we arrange the descriptors in a closed ring, so that the last descriptor 1184 * points back to the first. 1185 */ 1186static int 1187vr_rx_ring_init(struct vr_softc *sc) 1188{ 1189 struct vr_ring_data *rd; 1190 struct vr_rxdesc *rxd; 1191 bus_addr_t addr; 1192 int i; 1193 1194 sc->vr_cdata.vr_rx_cons = 0; 1195 1196 rd = &sc->vr_rdata; 1197 bzero(rd->vr_rx_ring, VR_RX_RING_SIZE); 1198 for (i = 0; i < VR_RX_RING_CNT; i++) { 1199 rxd = &sc->vr_cdata.vr_rxdesc[i]; 1200 rxd->rx_m = NULL; 1201 rxd->desc = &rd->vr_rx_ring[i]; 1202 if (i == VR_RX_RING_CNT - 1) 1203 addr = VR_RX_RING_ADDR(sc, 0); 1204 else 1205 addr = VR_RX_RING_ADDR(sc, i + 1); 1206 rd->vr_rx_ring[i].vr_nextphys = htole32(VR_ADDR_LO(addr)); 1207 if (vr_newbuf(sc, i) != 0) 1208 return (ENOBUFS); 1209 } 1210 1211 bus_dmamap_sync(sc->vr_cdata.vr_rx_ring_tag, 1212 sc->vr_cdata.vr_rx_ring_map, 1213 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1214 1215 return (0); 1216} 1217 1218static __inline void 1219vr_discard_rxbuf(struct vr_rxdesc *rxd) 1220{ 1221 struct vr_desc *desc; 1222 1223 desc = rxd->desc; 1224 desc->vr_ctl = htole32(VR_RXCTL | (MCLBYTES - sizeof(uint64_t))); 1225 desc->vr_status = htole32(VR_RXSTAT_OWN); 1226} 1227 1228/* 1229 * Initialize an RX descriptor and attach an MBUF cluster. 1230 * Note: the length fields are only 11 bits wide, which means the 1231 * largest size we can specify is 2047. This is important because 1232 * MCLBYTES is 2048, so we have to subtract one otherwise we'll 1233 * overflow the field and make a mess. 1234 */ 1235static int 1236vr_newbuf(struct vr_softc *sc, int idx) 1237{ 1238 struct vr_desc *desc; 1239 struct vr_rxdesc *rxd; 1240 struct mbuf *m; 1241 bus_dma_segment_t segs[1]; 1242 bus_dmamap_t map; 1243 int nsegs; 1244 1245 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1246 if (m == NULL) 1247 return (ENOBUFS); 1248 m->m_len = m->m_pkthdr.len = MCLBYTES; 1249 m_adj(m, sizeof(uint64_t)); 1250 1251 if (bus_dmamap_load_mbuf_sg(sc->vr_cdata.vr_rx_tag, 1252 sc->vr_cdata.vr_rx_sparemap, m, segs, &nsegs, 0) != 0) { 1253 m_freem(m); 1254 return (ENOBUFS); 1255 } 1256 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 1257 1258 rxd = &sc->vr_cdata.vr_rxdesc[idx]; 1259 if (rxd->rx_m != NULL) { 1260 bus_dmamap_sync(sc->vr_cdata.vr_rx_tag, rxd->rx_dmamap, 1261 BUS_DMASYNC_POSTREAD); 1262 bus_dmamap_unload(sc->vr_cdata.vr_rx_tag, rxd->rx_dmamap); 1263 } 1264 map = rxd->rx_dmamap; 1265 rxd->rx_dmamap = sc->vr_cdata.vr_rx_sparemap; 1266 sc->vr_cdata.vr_rx_sparemap = map; 1267 bus_dmamap_sync(sc->vr_cdata.vr_rx_tag, rxd->rx_dmamap, 1268 BUS_DMASYNC_PREREAD); 1269 rxd->rx_m = m; 1270 desc = rxd->desc; 1271 desc->vr_data = htole32(VR_ADDR_LO(segs[0].ds_addr)); 1272 desc->vr_ctl = htole32(VR_RXCTL | segs[0].ds_len); 1273 desc->vr_status = htole32(VR_RXSTAT_OWN); 1274 1275 return (0); 1276} 1277 1278#ifndef __NO_STRICT_ALIGNMENT 1279static __inline void 1280vr_fixup_rx(struct mbuf *m) 1281{ 1282 uint16_t *src, *dst; 1283 int i; 1284 1285 src = mtod(m, uint16_t *); 1286 dst = src - 1; 1287 1288 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++) 1289 *dst++ = *src++; 1290 1291 m->m_data -= ETHER_ALIGN; 1292} 1293#endif 1294 1295/* 1296 * A frame has been uploaded: pass the resulting mbuf chain up to 1297 * the higher level protocols. 1298 */ 1299static int 1300vr_rxeof(struct vr_softc *sc) 1301{ 1302 struct vr_rxdesc *rxd; 1303 struct mbuf *m; 1304 struct ifnet *ifp; 1305 struct vr_desc *cur_rx; 1306 int cons, prog, total_len, rx_npkts; 1307 uint32_t rxstat, rxctl; 1308 1309 VR_LOCK_ASSERT(sc); 1310 ifp = sc->vr_ifp; 1311 cons = sc->vr_cdata.vr_rx_cons; 1312 rx_npkts = 0; 1313 1314 bus_dmamap_sync(sc->vr_cdata.vr_rx_ring_tag, 1315 sc->vr_cdata.vr_rx_ring_map, 1316 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1317 1318 for (prog = 0; prog < VR_RX_RING_CNT; VR_INC(cons, VR_RX_RING_CNT)) { 1319#ifdef DEVICE_POLLING 1320 if (ifp->if_capenable & IFCAP_POLLING) { 1321 if (sc->rxcycles <= 0) 1322 break; 1323 sc->rxcycles--; 1324 } 1325#endif 1326 cur_rx = &sc->vr_rdata.vr_rx_ring[cons]; 1327 rxstat = le32toh(cur_rx->vr_status); 1328 rxctl = le32toh(cur_rx->vr_ctl); 1329 if ((rxstat & VR_RXSTAT_OWN) == VR_RXSTAT_OWN) 1330 break; 1331 1332 prog++; 1333 rxd = &sc->vr_cdata.vr_rxdesc[cons]; 1334 m = rxd->rx_m; 1335 1336 /* 1337 * If an error occurs, update stats, clear the 1338 * status word and leave the mbuf cluster in place: 1339 * it should simply get re-used next time this descriptor 1340 * comes up in the ring. 1341 * We don't support SG in Rx path yet, so discard 1342 * partial frame. 1343 */ 1344 if ((rxstat & VR_RXSTAT_RX_OK) == 0 || 1345 (rxstat & (VR_RXSTAT_FIRSTFRAG | VR_RXSTAT_LASTFRAG)) != 1346 (VR_RXSTAT_FIRSTFRAG | VR_RXSTAT_LASTFRAG)) { 1347 ifp->if_ierrors++; 1348 sc->vr_stat.rx_errors++; 1349 if (rxstat & VR_RXSTAT_CRCERR) 1350 sc->vr_stat.rx_crc_errors++; 1351 if (rxstat & VR_RXSTAT_FRAMEALIGNERR) 1352 sc->vr_stat.rx_alignment++; 1353 if (rxstat & VR_RXSTAT_FIFOOFLOW) 1354 sc->vr_stat.rx_fifo_overflows++; 1355 if (rxstat & VR_RXSTAT_GIANT) 1356 sc->vr_stat.rx_giants++; 1357 if (rxstat & VR_RXSTAT_RUNT) 1358 sc->vr_stat.rx_runts++; 1359 if (rxstat & VR_RXSTAT_BUFFERR) 1360 sc->vr_stat.rx_no_buffers++; 1361#ifdef VR_SHOW_ERRORS 1362 device_printf(sc->vr_dev, "%s: receive error = 0x%b\n", 1363 __func__, rxstat & 0xff, VR_RXSTAT_ERR_BITS); 1364#endif 1365 vr_discard_rxbuf(rxd); 1366 continue; 1367 } 1368 1369 if (vr_newbuf(sc, cons) != 0) { 1370 ifp->if_iqdrops++; 1371 sc->vr_stat.rx_errors++; 1372 sc->vr_stat.rx_no_mbufs++; 1373 vr_discard_rxbuf(rxd); 1374 continue; 1375 } 1376 1377 /* 1378 * XXX The VIA Rhine chip includes the CRC with every 1379 * received frame, and there's no way to turn this 1380 * behavior off (at least, I can't find anything in 1381 * the manual that explains how to do it) so we have 1382 * to trim off the CRC manually. 1383 */ 1384 total_len = VR_RXBYTES(rxstat); 1385 total_len -= ETHER_CRC_LEN; 1386 m->m_pkthdr.len = m->m_len = total_len; 1387#ifndef __NO_STRICT_ALIGNMENT 1388 /* 1389 * RX buffers must be 32-bit aligned. 1390 * Ignore the alignment problems on the non-strict alignment 1391 * platform. The performance hit incurred due to unaligned 1392 * accesses is much smaller than the hit produced by forcing 1393 * buffer copies all the time. 1394 */ 1395 vr_fixup_rx(m); 1396#endif 1397 m->m_pkthdr.rcvif = ifp; 1398 ifp->if_ipackets++; 1399 sc->vr_stat.rx_ok++; 1400 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0 && 1401 (rxstat & VR_RXSTAT_FRAG) == 0 && 1402 (rxctl & VR_RXCTL_IP) != 0) { 1403 /* Checksum is valid for non-fragmented IP packets. */ 1404 m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; 1405 if ((rxctl & VR_RXCTL_IPOK) == VR_RXCTL_IPOK) { 1406 m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 1407 if (rxctl & (VR_RXCTL_TCP | VR_RXCTL_UDP)) { 1408 m->m_pkthdr.csum_flags |= 1409 CSUM_DATA_VALID | CSUM_PSEUDO_HDR; 1410 if ((rxctl & VR_RXCTL_TCPUDPOK) != 0) 1411 m->m_pkthdr.csum_data = 0xffff; 1412 } 1413 } 1414 } 1415 VR_UNLOCK(sc); 1416 (*ifp->if_input)(ifp, m); 1417 VR_LOCK(sc); 1418 rx_npkts++; 1419 } 1420 1421 if (prog > 0) { 1422 sc->vr_cdata.vr_rx_cons = cons; 1423 bus_dmamap_sync(sc->vr_cdata.vr_rx_ring_tag, 1424 sc->vr_cdata.vr_rx_ring_map, 1425 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1426 } 1427 return (rx_npkts); 1428} 1429 1430/* 1431 * A frame was downloaded to the chip. It's safe for us to clean up 1432 * the list buffers. 1433 */ 1434static void 1435vr_txeof(struct vr_softc *sc) 1436{ 1437 struct vr_txdesc *txd; 1438 struct vr_desc *cur_tx; 1439 struct ifnet *ifp; 1440 uint32_t txctl, txstat; 1441 int cons, prod; 1442 1443 VR_LOCK_ASSERT(sc); 1444 1445 cons = sc->vr_cdata.vr_tx_cons; 1446 prod = sc->vr_cdata.vr_tx_prod; 1447 if (cons == prod) 1448 return; 1449 1450 bus_dmamap_sync(sc->vr_cdata.vr_tx_ring_tag, 1451 sc->vr_cdata.vr_tx_ring_map, 1452 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1453 1454 ifp = sc->vr_ifp; 1455 /* 1456 * Go through our tx list and free mbufs for those 1457 * frames that have been transmitted. 1458 */ 1459 for (; cons != prod; VR_INC(cons, VR_TX_RING_CNT)) { 1460 cur_tx = &sc->vr_rdata.vr_tx_ring[cons]; 1461 txctl = le32toh(cur_tx->vr_ctl); 1462 txstat = le32toh(cur_tx->vr_status); 1463 if ((txstat & VR_TXSTAT_OWN) == VR_TXSTAT_OWN) 1464 break; 1465 1466 sc->vr_cdata.vr_tx_cnt--; 1467 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1468 /* Only the first descriptor in the chain is valid. */ 1469 if ((txctl & VR_TXCTL_FIRSTFRAG) == 0) 1470 continue; 1471 1472 txd = &sc->vr_cdata.vr_txdesc[cons]; 1473 KASSERT(txd->tx_m != NULL, ("%s: accessing NULL mbuf!\n", 1474 __func__)); 1475 1476 if ((txstat & VR_TXSTAT_ERRSUM) != 0) { 1477 ifp->if_oerrors++; 1478 sc->vr_stat.tx_errors++; 1479 if ((txstat & VR_TXSTAT_ABRT) != 0) { 1480 /* Give up and restart Tx. */ 1481 sc->vr_stat.tx_abort++; 1482 bus_dmamap_sync(sc->vr_cdata.vr_tx_tag, 1483 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); 1484 bus_dmamap_unload(sc->vr_cdata.vr_tx_tag, 1485 txd->tx_dmamap); 1486 m_freem(txd->tx_m); 1487 txd->tx_m = NULL; 1488 VR_INC(cons, VR_TX_RING_CNT); 1489 sc->vr_cdata.vr_tx_cons = cons; 1490 if (vr_tx_stop(sc) != 0) { 1491 device_printf(sc->vr_dev, 1492 "%s: Tx shutdown error -- " 1493 "resetting\n", __func__); 1494 sc->vr_flags |= VR_F_RESTART; 1495 return; 1496 } 1497 vr_tx_start(sc); 1498 break; 1499 } 1500 if ((sc->vr_revid < REV_ID_VT3071_A && 1501 (txstat & VR_TXSTAT_UNDERRUN)) || 1502 (txstat & (VR_TXSTAT_UDF | VR_TXSTAT_TBUFF))) { 1503 sc->vr_stat.tx_underrun++; 1504 /* Retry and restart Tx. */ 1505 sc->vr_cdata.vr_tx_cnt++; 1506 sc->vr_cdata.vr_tx_cons = cons; 1507 cur_tx->vr_status = htole32(VR_TXSTAT_OWN); 1508 bus_dmamap_sync(sc->vr_cdata.vr_tx_ring_tag, 1509 sc->vr_cdata.vr_tx_ring_map, 1510 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1511 vr_tx_underrun(sc); 1512 return; 1513 } 1514 if ((txstat & VR_TXSTAT_DEFER) != 0) { 1515 ifp->if_collisions++; 1516 sc->vr_stat.tx_collisions++; 1517 } 1518 if ((txstat & VR_TXSTAT_LATECOLL) != 0) { 1519 ifp->if_collisions++; 1520 sc->vr_stat.tx_late_collisions++; 1521 } 1522 } else { 1523 sc->vr_stat.tx_ok++; 1524 ifp->if_opackets++; 1525 } 1526 1527 bus_dmamap_sync(sc->vr_cdata.vr_tx_tag, txd->tx_dmamap, 1528 BUS_DMASYNC_POSTWRITE); 1529 bus_dmamap_unload(sc->vr_cdata.vr_tx_tag, txd->tx_dmamap); 1530 if (sc->vr_revid < REV_ID_VT3071_A) { 1531 ifp->if_collisions += 1532 (txstat & VR_TXSTAT_COLLCNT) >> 3; 1533 sc->vr_stat.tx_collisions += 1534 (txstat & VR_TXSTAT_COLLCNT) >> 3; 1535 } else { 1536 ifp->if_collisions += (txstat & 0x0f); 1537 sc->vr_stat.tx_collisions += (txstat & 0x0f); 1538 } 1539 m_freem(txd->tx_m); 1540 txd->tx_m = NULL; 1541 } 1542 1543 sc->vr_cdata.vr_tx_cons = cons; 1544 if (sc->vr_cdata.vr_tx_cnt == 0) 1545 sc->vr_watchdog_timer = 0; 1546} 1547 1548static void 1549vr_tick(void *xsc) 1550{ 1551 struct vr_softc *sc; 1552 struct mii_data *mii; 1553 1554 sc = (struct vr_softc *)xsc; 1555 1556 VR_LOCK_ASSERT(sc); 1557 1558 if ((sc->vr_flags & VR_F_RESTART) != 0) { 1559 device_printf(sc->vr_dev, "restarting\n"); 1560 sc->vr_stat.num_restart++; 1561 sc->vr_ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1562 vr_init_locked(sc); 1563 sc->vr_flags &= ~VR_F_RESTART; 1564 } 1565 1566 mii = device_get_softc(sc->vr_miibus); 1567 mii_tick(mii); 1568 vr_watchdog(sc); 1569 callout_reset(&sc->vr_stat_callout, hz, vr_tick, sc); 1570} 1571 1572#ifdef DEVICE_POLLING 1573static poll_handler_t vr_poll; 1574static poll_handler_t vr_poll_locked; 1575 1576static int 1577vr_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1578{ 1579 struct vr_softc *sc; 1580 int rx_npkts; 1581 1582 sc = ifp->if_softc; 1583 rx_npkts = 0; 1584 1585 VR_LOCK(sc); 1586 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 1587 rx_npkts = vr_poll_locked(ifp, cmd, count); 1588 VR_UNLOCK(sc); 1589 return (rx_npkts); 1590} 1591 1592static int 1593vr_poll_locked(struct ifnet *ifp, enum poll_cmd cmd, int count) 1594{ 1595 struct vr_softc *sc; 1596 int rx_npkts; 1597 1598 sc = ifp->if_softc; 1599 1600 VR_LOCK_ASSERT(sc); 1601 1602 sc->rxcycles = count; 1603 rx_npkts = vr_rxeof(sc); 1604 vr_txeof(sc); 1605 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1606 vr_start_locked(ifp); 1607 1608 if (cmd == POLL_AND_CHECK_STATUS) { 1609 uint16_t status; 1610 1611 /* Also check status register. */ 1612 status = CSR_READ_2(sc, VR_ISR); 1613 if (status) 1614 CSR_WRITE_2(sc, VR_ISR, status); 1615 1616 if ((status & VR_INTRS) == 0) 1617 return (rx_npkts); 1618 1619 if ((status & (VR_ISR_BUSERR | VR_ISR_LINKSTAT2 | 1620 VR_ISR_STATSOFLOW)) != 0) { 1621 if (vr_error(sc, status) != 0) 1622 return (rx_npkts); 1623 } 1624 if ((status & (VR_ISR_RX_NOBUF | VR_ISR_RX_OFLOW)) != 0) { 1625#ifdef VR_SHOW_ERRORS 1626 device_printf(sc->vr_dev, "%s: receive error : 0x%b\n", 1627 __func__, status, VR_ISR_ERR_BITS); 1628#endif 1629 vr_rx_start(sc); 1630 } 1631 } 1632 return (rx_npkts); 1633} 1634#endif /* DEVICE_POLLING */ 1635 1636/* Back off the transmit threshold. */ 1637static void 1638vr_tx_underrun(struct vr_softc *sc) 1639{ 1640 int thresh; 1641 1642 device_printf(sc->vr_dev, "Tx underrun -- "); 1643 if (sc->vr_txthresh < VR_TXTHRESH_MAX) { 1644 thresh = sc->vr_txthresh; 1645 sc->vr_txthresh++; 1646 if (sc->vr_txthresh >= VR_TXTHRESH_MAX) { 1647 sc->vr_txthresh = VR_TXTHRESH_MAX; 1648 printf("using store and forward mode\n"); 1649 } else 1650 printf("increasing Tx threshold(%d -> %d)\n", 1651 vr_tx_threshold_tables[thresh].value, 1652 vr_tx_threshold_tables[thresh + 1].value); 1653 } else 1654 printf("\n"); 1655 sc->vr_stat.tx_underrun++; 1656 if (vr_tx_stop(sc) != 0) { 1657 device_printf(sc->vr_dev, "%s: Tx shutdown error -- " 1658 "resetting\n", __func__); 1659 sc->vr_flags |= VR_F_RESTART; 1660 return; 1661 } 1662 vr_tx_start(sc); 1663} 1664 1665static void 1666vr_intr(void *arg) 1667{ 1668 struct vr_softc *sc; 1669 struct ifnet *ifp; 1670 uint16_t status; 1671 1672 sc = (struct vr_softc *)arg; 1673 1674 VR_LOCK(sc); 1675 1676 if (sc->vr_suspended != 0) 1677 goto done_locked; 1678 1679 status = CSR_READ_2(sc, VR_ISR); 1680 if (status == 0 || status == 0xffff || (status & VR_INTRS) == 0) 1681 goto done_locked; 1682 1683 ifp = sc->vr_ifp; 1684#ifdef DEVICE_POLLING 1685 if ((ifp->if_capenable & IFCAP_POLLING) != 0) 1686 goto done_locked; 1687#endif 1688 1689 /* Suppress unwanted interrupts. */ 1690 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0 || 1691 (sc->vr_flags & VR_F_RESTART) != 0) { 1692 CSR_WRITE_2(sc, VR_IMR, 0); 1693 CSR_WRITE_2(sc, VR_ISR, status); 1694 goto done_locked; 1695 } 1696 1697 /* Disable interrupts. */ 1698 CSR_WRITE_2(sc, VR_IMR, 0x0000); 1699 1700 for (; (status & VR_INTRS) != 0;) { 1701 CSR_WRITE_2(sc, VR_ISR, status); 1702 if ((status & (VR_ISR_BUSERR | VR_ISR_LINKSTAT2 | 1703 VR_ISR_STATSOFLOW)) != 0) { 1704 if (vr_error(sc, status) != 0) { 1705 VR_UNLOCK(sc); 1706 return; 1707 } 1708 } 1709 vr_rxeof(sc); 1710 if ((status & (VR_ISR_RX_NOBUF | VR_ISR_RX_OFLOW)) != 0) { 1711#ifdef VR_SHOW_ERRORS 1712 device_printf(sc->vr_dev, "%s: receive error = 0x%b\n", 1713 __func__, status, VR_ISR_ERR_BITS); 1714#endif 1715 /* Restart Rx if RxDMA SM was stopped. */ 1716 vr_rx_start(sc); 1717 } 1718 vr_txeof(sc); 1719 status = CSR_READ_2(sc, VR_ISR); 1720 } 1721 1722 /* Re-enable interrupts. */ 1723 CSR_WRITE_2(sc, VR_IMR, VR_INTRS); 1724 1725 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1726 vr_start_locked(ifp); 1727 1728done_locked: 1729 VR_UNLOCK(sc); 1730} 1731 1732static int 1733vr_error(struct vr_softc *sc, uint16_t status) 1734{ 1735 uint16_t pcis; 1736 1737 status &= VR_ISR_BUSERR | VR_ISR_LINKSTAT2 | VR_ISR_STATSOFLOW; 1738 if ((status & VR_ISR_BUSERR) != 0) { 1739 status &= ~VR_ISR_BUSERR; 1740 sc->vr_stat.bus_errors++; 1741 /* Disable further interrupts. */ 1742 CSR_WRITE_2(sc, VR_IMR, 0); 1743 pcis = pci_read_config(sc->vr_dev, PCIR_STATUS, 2); 1744 device_printf(sc->vr_dev, "PCI bus error(0x%04x) -- " 1745 "resetting\n", pcis); 1746 pci_write_config(sc->vr_dev, PCIR_STATUS, pcis, 2); 1747 sc->vr_flags |= VR_F_RESTART; 1748 return (EAGAIN); 1749 } 1750 if ((status & VR_ISR_LINKSTAT2) != 0) { 1751 /* Link state change, duplex changes etc. */ 1752 status &= ~VR_ISR_LINKSTAT2; 1753 } 1754 if ((status & VR_ISR_STATSOFLOW) != 0) { 1755 status &= ~VR_ISR_STATSOFLOW; 1756 if (sc->vr_revid >= REV_ID_VT6105M_A0) { 1757 /* Update MIB counters. */ 1758 } 1759 } 1760 1761 if (status != 0) 1762 device_printf(sc->vr_dev, 1763 "unhandled interrupt, status = 0x%04x\n", status); 1764 return (0); 1765} 1766 1767/* 1768 * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data 1769 * pointers to the fragment pointers. 1770 */ 1771static int 1772vr_encap(struct vr_softc *sc, struct mbuf **m_head) 1773{ 1774 struct vr_txdesc *txd; 1775 struct vr_desc *desc; 1776 struct mbuf *m; 1777 bus_dma_segment_t txsegs[VR_MAXFRAGS]; 1778 uint32_t csum_flags, txctl; 1779 int error, i, nsegs, prod, si; 1780 int padlen; 1781 1782 VR_LOCK_ASSERT(sc); 1783 1784 M_ASSERTPKTHDR((*m_head)); 1785 1786 /* 1787 * Some VIA Rhine wants packet buffers to be longword 1788 * aligned, but very often our mbufs aren't. Rather than 1789 * waste time trying to decide when to copy and when not 1790 * to copy, just do it all the time. 1791 */ 1792 if ((sc->vr_quirks & VR_Q_NEEDALIGN) != 0) { 1793 m = m_defrag(*m_head, M_DONTWAIT); 1794 if (m == NULL) { 1795 m_freem(*m_head); 1796 *m_head = NULL; 1797 return (ENOBUFS); 1798 } 1799 *m_head = m; 1800 } 1801 1802 /* 1803 * The Rhine chip doesn't auto-pad, so we have to make 1804 * sure to pad short frames out to the minimum frame length 1805 * ourselves. 1806 */ 1807 if ((*m_head)->m_pkthdr.len < VR_MIN_FRAMELEN) { 1808 m = *m_head; 1809 padlen = VR_MIN_FRAMELEN - m->m_pkthdr.len; 1810 if (M_WRITABLE(m) == 0) { 1811 /* Get a writable copy. */ 1812 m = m_dup(*m_head, M_DONTWAIT); 1813 m_freem(*m_head); 1814 if (m == NULL) { 1815 *m_head = NULL; 1816 return (ENOBUFS); 1817 } 1818 *m_head = m; 1819 } 1820 if (m->m_next != NULL || M_TRAILINGSPACE(m) < padlen) { 1821 m = m_defrag(m, M_DONTWAIT); 1822 if (m == NULL) { 1823 m_freem(*m_head); 1824 *m_head = NULL; 1825 return (ENOBUFS); 1826 } 1827 } 1828 /* 1829 * Manually pad short frames, and zero the pad space 1830 * to avoid leaking data. 1831 */ 1832 bzero(mtod(m, char *) + m->m_pkthdr.len, padlen); 1833 m->m_pkthdr.len += padlen; 1834 m->m_len = m->m_pkthdr.len; 1835 *m_head = m; 1836 } 1837 1838 prod = sc->vr_cdata.vr_tx_prod; 1839 txd = &sc->vr_cdata.vr_txdesc[prod]; 1840 error = bus_dmamap_load_mbuf_sg(sc->vr_cdata.vr_tx_tag, txd->tx_dmamap, 1841 *m_head, txsegs, &nsegs, BUS_DMA_NOWAIT); 1842 if (error == EFBIG) { 1843 m = m_collapse(*m_head, M_DONTWAIT, VR_MAXFRAGS); 1844 if (m == NULL) { 1845 m_freem(*m_head); 1846 *m_head = NULL; 1847 return (ENOBUFS); 1848 } 1849 *m_head = m; 1850 error = bus_dmamap_load_mbuf_sg(sc->vr_cdata.vr_tx_tag, 1851 txd->tx_dmamap, *m_head, txsegs, &nsegs, BUS_DMA_NOWAIT); 1852 if (error != 0) { 1853 m_freem(*m_head); 1854 *m_head = NULL; 1855 return (error); 1856 } 1857 } else if (error != 0) 1858 return (error); 1859 if (nsegs == 0) { 1860 m_freem(*m_head); 1861 *m_head = NULL; 1862 return (EIO); 1863 } 1864 1865 /* Check number of available descriptors. */ 1866 if (sc->vr_cdata.vr_tx_cnt + nsegs >= (VR_TX_RING_CNT - 1)) { 1867 bus_dmamap_unload(sc->vr_cdata.vr_tx_tag, txd->tx_dmamap); 1868 return (ENOBUFS); 1869 } 1870 1871 txd->tx_m = *m_head; 1872 bus_dmamap_sync(sc->vr_cdata.vr_tx_tag, txd->tx_dmamap, 1873 BUS_DMASYNC_PREWRITE); 1874 1875 /* Set checksum offload. */ 1876 csum_flags = 0; 1877 if (((*m_head)->m_pkthdr.csum_flags & VR_CSUM_FEATURES) != 0) { 1878 if ((*m_head)->m_pkthdr.csum_flags & CSUM_IP) 1879 csum_flags |= VR_TXCTL_IPCSUM; 1880 if ((*m_head)->m_pkthdr.csum_flags & CSUM_TCP) 1881 csum_flags |= VR_TXCTL_TCPCSUM; 1882 if ((*m_head)->m_pkthdr.csum_flags & CSUM_UDP) 1883 csum_flags |= VR_TXCTL_UDPCSUM; 1884 } 1885 1886 /* 1887 * Quite contrary to datasheet for VIA Rhine, VR_TXCTL_TLINK bit 1888 * is required for all descriptors regardless of single or 1889 * multiple buffers. Also VR_TXSTAT_OWN bit is valid only for 1890 * the first descriptor for a multi-fragmented frames. Without 1891 * that VIA Rhine chip generates Tx underrun interrupts and can't 1892 * send any frames. 1893 */ 1894 si = prod; 1895 for (i = 0; i < nsegs; i++) { 1896 desc = &sc->vr_rdata.vr_tx_ring[prod]; 1897 desc->vr_status = 0; 1898 txctl = txsegs[i].ds_len | VR_TXCTL_TLINK | csum_flags; 1899 if (i == 0) 1900 txctl |= VR_TXCTL_FIRSTFRAG; 1901 desc->vr_ctl = htole32(txctl); 1902 desc->vr_data = htole32(VR_ADDR_LO(txsegs[i].ds_addr)); 1903 sc->vr_cdata.vr_tx_cnt++; 1904 VR_INC(prod, VR_TX_RING_CNT); 1905 } 1906 /* Update producer index. */ 1907 sc->vr_cdata.vr_tx_prod = prod; 1908 1909 prod = (prod + VR_TX_RING_CNT - 1) % VR_TX_RING_CNT; 1910 desc = &sc->vr_rdata.vr_tx_ring[prod]; 1911 1912 /* 1913 * Set EOP on the last desciptor and reuqest Tx completion 1914 * interrupt for every VR_TX_INTR_THRESH-th frames. 1915 */ 1916 VR_INC(sc->vr_cdata.vr_tx_pkts, VR_TX_INTR_THRESH); 1917 if (sc->vr_cdata.vr_tx_pkts == 0) 1918 desc->vr_ctl |= htole32(VR_TXCTL_LASTFRAG | VR_TXCTL_FINT); 1919 else 1920 desc->vr_ctl |= htole32(VR_TXCTL_LASTFRAG); 1921 1922 /* Lastly turn the first descriptor ownership to hardware. */ 1923 desc = &sc->vr_rdata.vr_tx_ring[si]; 1924 desc->vr_status |= htole32(VR_TXSTAT_OWN); 1925 1926 /* Sync descriptors. */ 1927 bus_dmamap_sync(sc->vr_cdata.vr_tx_ring_tag, 1928 sc->vr_cdata.vr_tx_ring_map, 1929 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1930 1931 return (0); 1932} 1933 1934static void 1935vr_start(struct ifnet *ifp) 1936{ 1937 struct vr_softc *sc; 1938 1939 sc = ifp->if_softc; 1940 VR_LOCK(sc); 1941 vr_start_locked(ifp); 1942 VR_UNLOCK(sc); 1943} 1944 1945static void 1946vr_start_locked(struct ifnet *ifp) 1947{ 1948 struct vr_softc *sc; 1949 struct mbuf *m_head; 1950 int enq; 1951 1952 sc = ifp->if_softc; 1953 1954 VR_LOCK_ASSERT(sc); 1955 1956 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 1957 IFF_DRV_RUNNING || sc->vr_link == 0) 1958 return; 1959 1960 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && 1961 sc->vr_cdata.vr_tx_cnt < VR_TX_RING_CNT - 2; ) { 1962 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1963 if (m_head == NULL) 1964 break; 1965 /* 1966 * Pack the data into the transmit ring. If we 1967 * don't have room, set the OACTIVE flag and wait 1968 * for the NIC to drain the ring. 1969 */ 1970 if (vr_encap(sc, &m_head)) { 1971 if (m_head == NULL) 1972 break; 1973 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1974 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1975 break; 1976 } 1977 1978 enq++; 1979 /* 1980 * If there's a BPF listener, bounce a copy of this frame 1981 * to him. 1982 */ 1983 ETHER_BPF_MTAP(ifp, m_head); 1984 } 1985 1986 if (enq > 0) { 1987 /* Tell the chip to start transmitting. */ 1988 VR_SETBIT(sc, VR_CR0, VR_CR0_TX_GO); 1989 /* Set a timeout in case the chip goes out to lunch. */ 1990 sc->vr_watchdog_timer = 5; 1991 } 1992} 1993 1994static void 1995vr_init(void *xsc) 1996{ 1997 struct vr_softc *sc; 1998 1999 sc = (struct vr_softc *)xsc; 2000 VR_LOCK(sc); 2001 vr_init_locked(sc); 2002 VR_UNLOCK(sc); 2003} 2004 2005static void 2006vr_init_locked(struct vr_softc *sc) 2007{ 2008 struct ifnet *ifp; 2009 struct mii_data *mii; 2010 bus_addr_t addr; 2011 int i; 2012 2013 VR_LOCK_ASSERT(sc); 2014 2015 ifp = sc->vr_ifp; 2016 mii = device_get_softc(sc->vr_miibus); 2017 2018 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 2019 return; 2020 2021 /* Cancel pending I/O and free all RX/TX buffers. */ 2022 vr_stop(sc); 2023 vr_reset(sc); 2024 2025 /* Set our station address. */ 2026 for (i = 0; i < ETHER_ADDR_LEN; i++) 2027 CSR_WRITE_1(sc, VR_PAR0 + i, IF_LLADDR(sc->vr_ifp)[i]); 2028 2029 /* Set DMA size. */ 2030 VR_CLRBIT(sc, VR_BCR0, VR_BCR0_DMA_LENGTH); 2031 VR_SETBIT(sc, VR_BCR0, VR_BCR0_DMA_STORENFWD); 2032 2033 /* 2034 * BCR0 and BCR1 can override the RXCFG and TXCFG registers, 2035 * so we must set both. 2036 */ 2037 VR_CLRBIT(sc, VR_BCR0, VR_BCR0_RX_THRESH); 2038 VR_SETBIT(sc, VR_BCR0, VR_BCR0_RXTHRESH128BYTES); 2039 2040 VR_CLRBIT(sc, VR_BCR1, VR_BCR1_TX_THRESH); 2041 VR_SETBIT(sc, VR_BCR1, vr_tx_threshold_tables[sc->vr_txthresh].bcr_cfg); 2042 2043 VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_THRESH); 2044 VR_SETBIT(sc, VR_RXCFG, VR_RXTHRESH_128BYTES); 2045 2046 VR_CLRBIT(sc, VR_TXCFG, VR_TXCFG_TX_THRESH); 2047 VR_SETBIT(sc, VR_TXCFG, vr_tx_threshold_tables[sc->vr_txthresh].tx_cfg); 2048 2049 /* Init circular RX list. */ 2050 if (vr_rx_ring_init(sc) != 0) { 2051 device_printf(sc->vr_dev, 2052 "initialization failed: no memory for rx buffers\n"); 2053 vr_stop(sc); 2054 return; 2055 } 2056 2057 /* Init tx descriptors. */ 2058 vr_tx_ring_init(sc); 2059 2060 if ((sc->vr_quirks & VR_Q_CAM) != 0) { 2061 uint8_t vcam[2] = { 0, 0 }; 2062 2063 /* Disable VLAN hardware tag insertion/stripping. */ 2064 VR_CLRBIT(sc, VR_TXCFG, VR_TXCFG_TXTAGEN | VR_TXCFG_RXTAGCTL); 2065 /* Disable VLAN hardware filtering. */ 2066 VR_CLRBIT(sc, VR_BCR1, VR_BCR1_VLANFILT_ENB); 2067 /* Disable all CAM entries. */ 2068 vr_cam_mask(sc, VR_MCAST_CAM, 0); 2069 vr_cam_mask(sc, VR_VLAN_CAM, 0); 2070 /* Enable the first VLAN CAM. */ 2071 vr_cam_data(sc, VR_VLAN_CAM, 0, vcam); 2072 vr_cam_mask(sc, VR_VLAN_CAM, 1); 2073 } 2074 2075 /* 2076 * Set up receive filter. 2077 */ 2078 vr_set_filter(sc); 2079 2080 /* 2081 * Load the address of the RX ring. 2082 */ 2083 addr = VR_RX_RING_ADDR(sc, 0); 2084 CSR_WRITE_4(sc, VR_RXADDR, VR_ADDR_LO(addr)); 2085 /* 2086 * Load the address of the TX ring. 2087 */ 2088 addr = VR_TX_RING_ADDR(sc, 0); 2089 CSR_WRITE_4(sc, VR_TXADDR, VR_ADDR_LO(addr)); 2090 /* Default : full-duplex, no Tx poll. */ 2091 CSR_WRITE_1(sc, VR_CR1, VR_CR1_FULLDUPLEX | VR_CR1_TX_NOPOLL); 2092 2093 /* Set flow-control parameters for Rhine III. */ 2094 if (sc->vr_revid >= REV_ID_VT6105_A0) { 2095 /* Rx buffer count available for incoming packet. */ 2096 CSR_WRITE_1(sc, VR_FLOWCR0, VR_RX_RING_CNT); 2097 /* 2098 * Tx pause low threshold : 16 free receive buffers 2099 * Tx pause XON high threshold : 48 free receive buffers 2100 */ 2101 CSR_WRITE_1(sc, VR_FLOWCR1, 2102 VR_FLOWCR1_TXLO16 | VR_FLOWCR1_TXHI48 | VR_FLOWCR1_XONXOFF); 2103 /* Set Tx pause timer. */ 2104 CSR_WRITE_2(sc, VR_PAUSETIMER, 0xffff); 2105 } 2106 2107 /* Enable receiver and transmitter. */ 2108 CSR_WRITE_1(sc, VR_CR0, 2109 VR_CR0_START | VR_CR0_TX_ON | VR_CR0_RX_ON | VR_CR0_RX_GO); 2110 2111 CSR_WRITE_2(sc, VR_ISR, 0xFFFF); 2112#ifdef DEVICE_POLLING 2113 /* 2114 * Disable interrupts if we are polling. 2115 */ 2116 if (ifp->if_capenable & IFCAP_POLLING) 2117 CSR_WRITE_2(sc, VR_IMR, 0); 2118 else 2119#endif 2120 /* 2121 * Enable interrupts and disable MII intrs. 2122 */ 2123 CSR_WRITE_2(sc, VR_IMR, VR_INTRS); 2124 if (sc->vr_revid > REV_ID_VT6102_A) 2125 CSR_WRITE_2(sc, VR_MII_IMR, 0); 2126 2127 sc->vr_link = 0; 2128 mii_mediachg(mii); 2129 2130 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2131 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2132 2133 callout_reset(&sc->vr_stat_callout, hz, vr_tick, sc); 2134} 2135 2136/* 2137 * Set media options. 2138 */ 2139static int 2140vr_ifmedia_upd(struct ifnet *ifp) 2141{ 2142 struct vr_softc *sc; 2143 struct mii_data *mii; 2144 struct mii_softc *miisc; 2145 int error; 2146 2147 sc = ifp->if_softc; 2148 VR_LOCK(sc); 2149 mii = device_get_softc(sc->vr_miibus); 2150 if (mii->mii_instance) { 2151 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 2152 mii_phy_reset(miisc); 2153 } 2154 error = mii_mediachg(mii); 2155 VR_UNLOCK(sc); 2156 2157 return (error); 2158} 2159 2160/* 2161 * Report current media status. 2162 */ 2163static void 2164vr_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 2165{ 2166 struct vr_softc *sc; 2167 struct mii_data *mii; 2168 2169 sc = ifp->if_softc; 2170 mii = device_get_softc(sc->vr_miibus); 2171 VR_LOCK(sc); 2172 mii_pollstat(mii); 2173 VR_UNLOCK(sc); 2174 ifmr->ifm_active = mii->mii_media_active; 2175 ifmr->ifm_status = mii->mii_media_status; 2176} 2177 2178static int 2179vr_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 2180{ 2181 struct vr_softc *sc; 2182 struct ifreq *ifr; 2183 struct mii_data *mii; 2184 int error, mask; 2185 2186 sc = ifp->if_softc; 2187 ifr = (struct ifreq *)data; 2188 error = 0; 2189 2190 switch (command) { 2191 case SIOCSIFFLAGS: 2192 VR_LOCK(sc); 2193 if (ifp->if_flags & IFF_UP) { 2194 if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 2195 if ((ifp->if_flags ^ sc->vr_if_flags) & 2196 (IFF_PROMISC | IFF_ALLMULTI)) 2197 vr_set_filter(sc); 2198 } else { 2199 if (sc->vr_detach == 0) 2200 vr_init_locked(sc); 2201 } 2202 } else { 2203 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2204 vr_stop(sc); 2205 } 2206 sc->vr_if_flags = ifp->if_flags; 2207 VR_UNLOCK(sc); 2208 break; 2209 case SIOCADDMULTI: 2210 case SIOCDELMULTI: 2211 VR_LOCK(sc); 2212 vr_set_filter(sc); 2213 VR_UNLOCK(sc); 2214 break; 2215 case SIOCGIFMEDIA: 2216 case SIOCSIFMEDIA: 2217 mii = device_get_softc(sc->vr_miibus); 2218 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 2219 break; 2220 case SIOCSIFCAP: 2221 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 2222#ifdef DEVICE_POLLING 2223 if (mask & IFCAP_POLLING) { 2224 if (ifr->ifr_reqcap & IFCAP_POLLING) { 2225 error = ether_poll_register(vr_poll, ifp); 2226 if (error != 0) 2227 break; 2228 VR_LOCK(sc); 2229 /* Disable interrupts. */ 2230 CSR_WRITE_2(sc, VR_IMR, 0x0000); 2231 ifp->if_capenable |= IFCAP_POLLING; 2232 VR_UNLOCK(sc); 2233 } else { 2234 error = ether_poll_deregister(ifp); 2235 /* Enable interrupts. */ 2236 VR_LOCK(sc); 2237 CSR_WRITE_2(sc, VR_IMR, VR_INTRS); 2238 ifp->if_capenable &= ~IFCAP_POLLING; 2239 VR_UNLOCK(sc); 2240 } 2241 } 2242#endif /* DEVICE_POLLING */ 2243 if ((mask & IFCAP_TXCSUM) != 0 && 2244 (IFCAP_TXCSUM & ifp->if_capabilities) != 0) { 2245 ifp->if_capenable ^= IFCAP_TXCSUM; 2246 if ((IFCAP_TXCSUM & ifp->if_capenable) != 0) 2247 ifp->if_hwassist |= VR_CSUM_FEATURES; 2248 else 2249 ifp->if_hwassist &= ~VR_CSUM_FEATURES; 2250 } 2251 if ((mask & IFCAP_RXCSUM) != 0 && 2252 (IFCAP_RXCSUM & ifp->if_capabilities) != 0) 2253 ifp->if_capenable ^= IFCAP_RXCSUM; 2254 if ((mask & IFCAP_WOL_UCAST) != 0 && 2255 (ifp->if_capabilities & IFCAP_WOL_UCAST) != 0) 2256 ifp->if_capenable ^= IFCAP_WOL_UCAST; 2257 if ((mask & IFCAP_WOL_MAGIC) != 0 && 2258 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0) 2259 ifp->if_capenable ^= IFCAP_WOL_MAGIC; 2260 break; 2261 default: 2262 error = ether_ioctl(ifp, command, data); 2263 break; 2264 } 2265 2266 return (error); 2267} 2268 2269static void 2270vr_watchdog(struct vr_softc *sc) 2271{ 2272 struct ifnet *ifp; 2273 2274 VR_LOCK_ASSERT(sc); 2275 2276 if (sc->vr_watchdog_timer == 0 || --sc->vr_watchdog_timer) 2277 return; 2278 2279 ifp = sc->vr_ifp; 2280 /* 2281 * Reclaim first as we don't request interrupt for every packets. 2282 */ 2283 vr_txeof(sc); 2284 if (sc->vr_cdata.vr_tx_cnt == 0) 2285 return; 2286 2287 if (sc->vr_link == 0) { 2288 if (bootverbose) 2289 if_printf(sc->vr_ifp, "watchdog timeout " 2290 "(missed link)\n"); 2291 ifp->if_oerrors++; 2292 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2293 vr_init_locked(sc); 2294 return; 2295 } 2296 2297 ifp->if_oerrors++; 2298 if_printf(ifp, "watchdog timeout\n"); 2299 2300 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2301 vr_init_locked(sc); 2302 2303 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 2304 vr_start_locked(ifp); 2305} 2306 2307static void 2308vr_tx_start(struct vr_softc *sc) 2309{ 2310 bus_addr_t addr; 2311 uint8_t cmd; 2312 2313 cmd = CSR_READ_1(sc, VR_CR0); 2314 if ((cmd & VR_CR0_TX_ON) == 0) { 2315 addr = VR_TX_RING_ADDR(sc, sc->vr_cdata.vr_tx_cons); 2316 CSR_WRITE_4(sc, VR_TXADDR, VR_ADDR_LO(addr)); 2317 cmd |= VR_CR0_TX_ON; 2318 CSR_WRITE_1(sc, VR_CR0, cmd); 2319 } 2320 if (sc->vr_cdata.vr_tx_cnt != 0) { 2321 sc->vr_watchdog_timer = 5; 2322 VR_SETBIT(sc, VR_CR0, VR_CR0_TX_GO); 2323 } 2324} 2325 2326static void 2327vr_rx_start(struct vr_softc *sc) 2328{ 2329 bus_addr_t addr; 2330 uint8_t cmd; 2331 2332 cmd = CSR_READ_1(sc, VR_CR0); 2333 if ((cmd & VR_CR0_RX_ON) == 0) { 2334 addr = VR_RX_RING_ADDR(sc, sc->vr_cdata.vr_rx_cons); 2335 CSR_WRITE_4(sc, VR_RXADDR, VR_ADDR_LO(addr)); 2336 cmd |= VR_CR0_RX_ON; 2337 CSR_WRITE_1(sc, VR_CR0, cmd); 2338 } 2339 CSR_WRITE_1(sc, VR_CR0, cmd | VR_CR0_RX_GO); 2340} 2341 2342static int 2343vr_tx_stop(struct vr_softc *sc) 2344{ 2345 int i; 2346 uint8_t cmd; 2347 2348 cmd = CSR_READ_1(sc, VR_CR0); 2349 if ((cmd & VR_CR0_TX_ON) != 0) { 2350 cmd &= ~VR_CR0_TX_ON; 2351 CSR_WRITE_1(sc, VR_CR0, cmd); 2352 for (i = VR_TIMEOUT; i > 0; i--) { 2353 DELAY(5); 2354 cmd = CSR_READ_1(sc, VR_CR0); 2355 if ((cmd & VR_CR0_TX_ON) == 0) 2356 break; 2357 } 2358 if (i == 0) 2359 return (ETIMEDOUT); 2360 } 2361 return (0); 2362} 2363 2364static int 2365vr_rx_stop(struct vr_softc *sc) 2366{ 2367 int i; 2368 uint8_t cmd; 2369 2370 cmd = CSR_READ_1(sc, VR_CR0); 2371 if ((cmd & VR_CR0_RX_ON) != 0) { 2372 cmd &= ~VR_CR0_RX_ON; 2373 CSR_WRITE_1(sc, VR_CR0, cmd); 2374 for (i = VR_TIMEOUT; i > 0; i--) { 2375 DELAY(5); 2376 cmd = CSR_READ_1(sc, VR_CR0); 2377 if ((cmd & VR_CR0_RX_ON) == 0) 2378 break; 2379 } 2380 if (i == 0) 2381 return (ETIMEDOUT); 2382 } 2383 return (0); 2384} 2385 2386/* 2387 * Stop the adapter and free any mbufs allocated to the 2388 * RX and TX lists. 2389 */ 2390static void 2391vr_stop(struct vr_softc *sc) 2392{ 2393 struct vr_txdesc *txd; 2394 struct vr_rxdesc *rxd; 2395 struct ifnet *ifp; 2396 int i; 2397 2398 VR_LOCK_ASSERT(sc); 2399 2400 ifp = sc->vr_ifp; 2401 sc->vr_watchdog_timer = 0; 2402 2403 callout_stop(&sc->vr_stat_callout); 2404 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2405 2406 CSR_WRITE_1(sc, VR_CR0, VR_CR0_STOP); 2407 if (vr_rx_stop(sc) != 0) 2408 device_printf(sc->vr_dev, "%s: Rx shutdown error\n", __func__); 2409 if (vr_tx_stop(sc) != 0) 2410 device_printf(sc->vr_dev, "%s: Tx shutdown error\n", __func__); 2411 /* Clear pending interrupts. */ 2412 CSR_WRITE_2(sc, VR_ISR, 0xFFFF); 2413 CSR_WRITE_2(sc, VR_IMR, 0x0000); 2414 CSR_WRITE_4(sc, VR_TXADDR, 0x00000000); 2415 CSR_WRITE_4(sc, VR_RXADDR, 0x00000000); 2416 2417 /* 2418 * Free RX and TX mbufs still in the queues. 2419 */ 2420 for (i = 0; i < VR_RX_RING_CNT; i++) { 2421 rxd = &sc->vr_cdata.vr_rxdesc[i]; 2422 if (rxd->rx_m != NULL) { 2423 bus_dmamap_sync(sc->vr_cdata.vr_rx_tag, 2424 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); 2425 bus_dmamap_unload(sc->vr_cdata.vr_rx_tag, 2426 rxd->rx_dmamap); 2427 m_freem(rxd->rx_m); 2428 rxd->rx_m = NULL; 2429 } 2430 } 2431 for (i = 0; i < VR_TX_RING_CNT; i++) { 2432 txd = &sc->vr_cdata.vr_txdesc[i]; 2433 if (txd->tx_m != NULL) { 2434 bus_dmamap_sync(sc->vr_cdata.vr_tx_tag, 2435 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); 2436 bus_dmamap_unload(sc->vr_cdata.vr_tx_tag, 2437 txd->tx_dmamap); 2438 m_freem(txd->tx_m); 2439 txd->tx_m = NULL; 2440 } 2441 } 2442} 2443 2444/* 2445 * Stop all chip I/O so that the kernel's probe routines don't 2446 * get confused by errant DMAs when rebooting. 2447 */ 2448static int 2449vr_shutdown(device_t dev) 2450{ 2451 2452 return (vr_suspend(dev)); 2453} 2454 2455static int 2456vr_suspend(device_t dev) 2457{ 2458 struct vr_softc *sc; 2459 2460 sc = device_get_softc(dev); 2461 2462 VR_LOCK(sc); 2463 vr_stop(sc); 2464 vr_setwol(sc); 2465 sc->vr_suspended = 1; 2466 VR_UNLOCK(sc); 2467 2468 return (0); 2469} 2470 2471static int 2472vr_resume(device_t dev) 2473{ 2474 struct vr_softc *sc; 2475 struct ifnet *ifp; 2476 2477 sc = device_get_softc(dev); 2478 2479 VR_LOCK(sc); 2480 ifp = sc->vr_ifp; 2481 vr_clrwol(sc); 2482 vr_reset(sc); 2483 if (ifp->if_flags & IFF_UP) 2484 vr_init_locked(sc); 2485 2486 sc->vr_suspended = 0; 2487 VR_UNLOCK(sc); 2488 2489 return (0); 2490} 2491 2492static void 2493vr_setwol(struct vr_softc *sc) 2494{ 2495 struct ifnet *ifp; 2496 int pmc; 2497 uint16_t pmstat; 2498 uint8_t v; 2499 2500 VR_LOCK_ASSERT(sc); 2501 2502 if (sc->vr_revid < REV_ID_VT6102_A || 2503 pci_find_extcap(sc->vr_dev, PCIY_PMG, &pmc) != 0) 2504 return; 2505 2506 ifp = sc->vr_ifp; 2507 2508 /* Clear WOL configuration. */ 2509 CSR_WRITE_1(sc, VR_WOLCR_CLR, 0xFF); 2510 CSR_WRITE_1(sc, VR_WOLCFG_CLR, VR_WOLCFG_SAB | VR_WOLCFG_SAM); 2511 CSR_WRITE_1(sc, VR_PWRCSR_CLR, 0xFF); 2512 CSR_WRITE_1(sc, VR_PWRCFG_CLR, VR_PWRCFG_WOLEN); 2513 if (sc->vr_revid > REV_ID_VT6105_B0) { 2514 /* Newer Rhine III supports two additional patterns. */ 2515 CSR_WRITE_1(sc, VR_WOLCFG_CLR, VR_WOLCFG_PATTERN_PAGE); 2516 CSR_WRITE_1(sc, VR_TESTREG_CLR, 3); 2517 CSR_WRITE_1(sc, VR_PWRCSR1_CLR, 3); 2518 } 2519 if ((ifp->if_capenable & IFCAP_WOL_UCAST) != 0) 2520 CSR_WRITE_1(sc, VR_WOLCR_SET, VR_WOLCR_UCAST); 2521 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0) 2522 CSR_WRITE_1(sc, VR_WOLCR_SET, VR_WOLCR_MAGIC); 2523 /* 2524 * It seems that multicast wakeup frames require programming pattern 2525 * registers and valid CRC as well as pattern mask for each pattern. 2526 * While it's possible to setup such a pattern it would complicate 2527 * WOL configuration so ignore multicast wakeup frames. 2528 */ 2529 if ((ifp->if_capenable & IFCAP_WOL) != 0) { 2530 CSR_WRITE_1(sc, VR_WOLCFG_SET, VR_WOLCFG_SAB | VR_WOLCFG_SAM); 2531 v = CSR_READ_1(sc, VR_STICKHW); 2532 CSR_WRITE_1(sc, VR_STICKHW, v | VR_STICKHW_WOL_ENB); 2533 CSR_WRITE_1(sc, VR_PWRCFG_SET, VR_PWRCFG_WOLEN); 2534 } 2535 2536 /* Put hardware into sleep. */ 2537 v = CSR_READ_1(sc, VR_STICKHW); 2538 v |= VR_STICKHW_DS0 | VR_STICKHW_DS1; 2539 CSR_WRITE_1(sc, VR_STICKHW, v); 2540 2541 /* Request PME if WOL is requested. */ 2542 pmstat = pci_read_config(sc->vr_dev, pmc + PCIR_POWER_STATUS, 2); 2543 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE); 2544 if ((ifp->if_capenable & IFCAP_WOL) != 0) 2545 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE; 2546 pci_write_config(sc->vr_dev, pmc + PCIR_POWER_STATUS, pmstat, 2); 2547} 2548 2549static void 2550vr_clrwol(struct vr_softc *sc) 2551{ 2552 uint8_t v; 2553 2554 VR_LOCK_ASSERT(sc); 2555 2556 if (sc->vr_revid < REV_ID_VT6102_A) 2557 return; 2558 2559 /* Take hardware out of sleep. */ 2560 v = CSR_READ_1(sc, VR_STICKHW); 2561 v &= ~(VR_STICKHW_DS0 | VR_STICKHW_DS1 | VR_STICKHW_WOL_ENB); 2562 CSR_WRITE_1(sc, VR_STICKHW, v); 2563 2564 /* Clear WOL configuration as WOL may interfere normal operation. */ 2565 CSR_WRITE_1(sc, VR_WOLCR_CLR, 0xFF); 2566 CSR_WRITE_1(sc, VR_WOLCFG_CLR, 2567 VR_WOLCFG_SAB | VR_WOLCFG_SAM | VR_WOLCFG_PMEOVR); 2568 CSR_WRITE_1(sc, VR_PWRCSR_CLR, 0xFF); 2569 CSR_WRITE_1(sc, VR_PWRCFG_CLR, VR_PWRCFG_WOLEN); 2570 if (sc->vr_revid > REV_ID_VT6105_B0) { 2571 /* Newer Rhine III supports two additional patterns. */ 2572 CSR_WRITE_1(sc, VR_WOLCFG_CLR, VR_WOLCFG_PATTERN_PAGE); 2573 CSR_WRITE_1(sc, VR_TESTREG_CLR, 3); 2574 CSR_WRITE_1(sc, VR_PWRCSR1_CLR, 3); 2575 } 2576} 2577 2578static int 2579vr_sysctl_stats(SYSCTL_HANDLER_ARGS) 2580{ 2581 struct vr_softc *sc; 2582 struct vr_statistics *stat; 2583 int error; 2584 int result; 2585 2586 result = -1; 2587 error = sysctl_handle_int(oidp, &result, 0, req); 2588 2589 if (error != 0 || req->newptr == NULL) 2590 return (error); 2591 2592 if (result == 1) { 2593 sc = (struct vr_softc *)arg1; 2594 stat = &sc->vr_stat; 2595 2596 printf("%s statistics:\n", device_get_nameunit(sc->vr_dev)); 2597 printf("Outbound good frames : %ju\n", 2598 (uintmax_t)stat->tx_ok); 2599 printf("Inbound good frames : %ju\n", 2600 (uintmax_t)stat->rx_ok); 2601 printf("Outbound errors : %u\n", stat->tx_errors); 2602 printf("Inbound errors : %u\n", stat->rx_errors); 2603 printf("Inbound no buffers : %u\n", stat->rx_no_buffers); 2604 printf("Inbound no mbuf clusters: %d\n", stat->rx_no_mbufs); 2605 printf("Inbound FIFO overflows : %d\n", 2606 stat->rx_fifo_overflows); 2607 printf("Inbound CRC errors : %u\n", stat->rx_crc_errors); 2608 printf("Inbound frame alignment errors : %u\n", 2609 stat->rx_alignment); 2610 printf("Inbound giant frames : %u\n", stat->rx_giants); 2611 printf("Inbound runt frames : %u\n", stat->rx_runts); 2612 printf("Outbound aborted with excessive collisions : %u\n", 2613 stat->tx_abort); 2614 printf("Outbound collisions : %u\n", stat->tx_collisions); 2615 printf("Outbound late collisions : %u\n", 2616 stat->tx_late_collisions); 2617 printf("Outbound underrun : %u\n", stat->tx_underrun); 2618 printf("PCI bus errors : %u\n", stat->bus_errors); 2619 printf("driver restarted due to Rx/Tx shutdown failure : %u\n", 2620 stat->num_restart); 2621 } 2622 2623 return (error); 2624} 2625