if_sf.c revision 221407
1/*- 2 * Copyright (c) 1997, 1998, 1999 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/sf/if_sf.c 221407 2011-05-03 19:51:29Z marius $"); 35 36/* 37 * Adaptec AIC-6915 "Starfire" PCI fast ethernet driver for FreeBSD. 38 * Programming manual is available from: 39 * http://download.adaptec.com/pdfs/user_guides/aic6915_pg.pdf. 40 * 41 * Written by Bill Paul <wpaul@ctr.columbia.edu> 42 * Department of Electical Engineering 43 * Columbia University, New York City 44 */ 45/* 46 * The Adaptec AIC-6915 "Starfire" is a 64-bit 10/100 PCI ethernet 47 * controller designed with flexibility and reducing CPU load in mind. 48 * The Starfire offers high and low priority buffer queues, a 49 * producer/consumer index mechanism and several different buffer 50 * queue and completion queue descriptor types. Any one of a number 51 * of different driver designs can be used, depending on system and 52 * OS requirements. This driver makes use of type2 transmit frame 53 * descriptors to take full advantage of fragmented packets buffers 54 * and two RX buffer queues prioritized on size (one queue for small 55 * frames that will fit into a single mbuf, another with full size 56 * mbuf clusters for everything else). The producer/consumer indexes 57 * and completion queues are also used. 58 * 59 * One downside to the Starfire has to do with alignment: buffer 60 * queues must be aligned on 256-byte boundaries, and receive buffers 61 * must be aligned on longword boundaries. The receive buffer alignment 62 * causes problems on the strict alignment architecture, where the 63 * packet payload should be longword aligned. There is no simple way 64 * around this. 65 * 66 * For receive filtering, the Starfire offers 16 perfect filter slots 67 * and a 512-bit hash table. 68 * 69 * The Starfire has no internal transceiver, relying instead on an 70 * external MII-based transceiver. Accessing registers on external 71 * PHYs is done through a special register map rather than with the 72 * usual bitbang MDIO method. 73 * 74 * Acesssing the registers on the Starfire is a little tricky. The 75 * Starfire has a 512K internal register space. When programmed for 76 * PCI memory mapped mode, the entire register space can be accessed 77 * directly. However in I/O space mode, only 256 bytes are directly 78 * mapped into PCI I/O space. The other registers can be accessed 79 * indirectly using the SF_INDIRECTIO_ADDR and SF_INDIRECTIO_DATA 80 * registers inside the 256-byte I/O window. 81 */ 82 83#ifdef HAVE_KERNEL_OPTION_HEADERS 84#include "opt_device_polling.h" 85#endif 86 87#include <sys/param.h> 88#include <sys/systm.h> 89#include <sys/bus.h> 90#include <sys/endian.h> 91#include <sys/kernel.h> 92#include <sys/malloc.h> 93#include <sys/mbuf.h> 94#include <sys/rman.h> 95#include <sys/module.h> 96#include <sys/socket.h> 97#include <sys/sockio.h> 98#include <sys/sysctl.h> 99#include <sys/taskqueue.h> 100 101#include <net/bpf.h> 102#include <net/if.h> 103#include <net/if_arp.h> 104#include <net/ethernet.h> 105#include <net/if_dl.h> 106#include <net/if_media.h> 107#include <net/if_types.h> 108#include <net/if_vlan_var.h> 109 110#include <dev/mii/mii.h> 111#include <dev/mii/miivar.h> 112 113#include <dev/pci/pcireg.h> 114#include <dev/pci/pcivar.h> 115 116#include <machine/bus.h> 117 118#include <dev/sf/if_sfreg.h> 119#include <dev/sf/starfire_rx.h> 120#include <dev/sf/starfire_tx.h> 121 122/* "device miibus" required. See GENERIC if you get errors here. */ 123#include "miibus_if.h" 124 125MODULE_DEPEND(sf, pci, 1, 1, 1); 126MODULE_DEPEND(sf, ether, 1, 1, 1); 127MODULE_DEPEND(sf, miibus, 1, 1, 1); 128 129#undef SF_GFP_DEBUG 130#define SF_CSUM_FEATURES (CSUM_TCP | CSUM_UDP) 131/* Define this to activate partial TCP/UDP checksum offload. */ 132#undef SF_PARTIAL_CSUM_SUPPORT 133 134static struct sf_type sf_devs[] = { 135 { AD_VENDORID, AD_DEVICEID_STARFIRE, "Adaptec AIC-6915 10/100BaseTX", 136 AD_SUBSYSID_62011_REV0, "Adaptec ANA-62011 (rev 0) 10/100BaseTX" }, 137 { AD_VENDORID, AD_DEVICEID_STARFIRE, "Adaptec AIC-6915 10/100BaseTX", 138 AD_SUBSYSID_62011_REV1, "Adaptec ANA-62011 (rev 1) 10/100BaseTX" }, 139 { AD_VENDORID, AD_DEVICEID_STARFIRE, "Adaptec AIC-6915 10/100BaseTX", 140 AD_SUBSYSID_62022, "Adaptec ANA-62022 10/100BaseTX" }, 141 { AD_VENDORID, AD_DEVICEID_STARFIRE, "Adaptec AIC-6915 10/100BaseTX", 142 AD_SUBSYSID_62044_REV0, "Adaptec ANA-62044 (rev 0) 10/100BaseTX" }, 143 { AD_VENDORID, AD_DEVICEID_STARFIRE, "Adaptec AIC-6915 10/100BaseTX", 144 AD_SUBSYSID_62044_REV1, "Adaptec ANA-62044 (rev 1) 10/100BaseTX" }, 145 { AD_VENDORID, AD_DEVICEID_STARFIRE, "Adaptec AIC-6915 10/100BaseTX", 146 AD_SUBSYSID_62020, "Adaptec ANA-62020 10/100BaseFX" }, 147 { AD_VENDORID, AD_DEVICEID_STARFIRE, "Adaptec AIC-6915 10/100BaseTX", 148 AD_SUBSYSID_69011, "Adaptec ANA-69011 10/100BaseTX" }, 149}; 150 151static int sf_probe(device_t); 152static int sf_attach(device_t); 153static int sf_detach(device_t); 154static int sf_shutdown(device_t); 155static int sf_suspend(device_t); 156static int sf_resume(device_t); 157static void sf_intr(void *); 158static void sf_tick(void *); 159static void sf_stats_update(struct sf_softc *); 160#ifndef __NO_STRICT_ALIGNMENT 161static __inline void sf_fixup_rx(struct mbuf *); 162#endif 163static int sf_rxeof(struct sf_softc *); 164static void sf_txeof(struct sf_softc *); 165static int sf_encap(struct sf_softc *, struct mbuf **); 166static void sf_start(struct ifnet *); 167static void sf_start_locked(struct ifnet *); 168static int sf_ioctl(struct ifnet *, u_long, caddr_t); 169static void sf_download_fw(struct sf_softc *); 170static void sf_init(void *); 171static void sf_init_locked(struct sf_softc *); 172static void sf_stop(struct sf_softc *); 173static void sf_watchdog(struct sf_softc *); 174static int sf_ifmedia_upd(struct ifnet *); 175static void sf_ifmedia_sts(struct ifnet *, struct ifmediareq *); 176static void sf_reset(struct sf_softc *); 177static int sf_dma_alloc(struct sf_softc *); 178static void sf_dma_free(struct sf_softc *); 179static int sf_init_rx_ring(struct sf_softc *); 180static void sf_init_tx_ring(struct sf_softc *); 181static int sf_newbuf(struct sf_softc *, int); 182static void sf_rxfilter(struct sf_softc *); 183static int sf_setperf(struct sf_softc *, int, uint8_t *); 184static int sf_sethash(struct sf_softc *, caddr_t, int); 185#ifdef notdef 186static int sf_setvlan(struct sf_softc *, int, uint32_t); 187#endif 188 189static uint8_t sf_read_eeprom(struct sf_softc *, int); 190 191static int sf_miibus_readreg(device_t, int, int); 192static int sf_miibus_writereg(device_t, int, int, int); 193static void sf_miibus_statchg(device_t); 194static void sf_link_task(void *, int); 195#ifdef DEVICE_POLLING 196static int sf_poll(struct ifnet *ifp, enum poll_cmd cmd, int count); 197#endif 198 199static uint32_t csr_read_4(struct sf_softc *, int); 200static void csr_write_4(struct sf_softc *, int, uint32_t); 201static void sf_txthresh_adjust(struct sf_softc *); 202static int sf_sysctl_stats(SYSCTL_HANDLER_ARGS); 203static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int); 204static int sysctl_hw_sf_int_mod(SYSCTL_HANDLER_ARGS); 205 206static device_method_t sf_methods[] = { 207 /* Device interface */ 208 DEVMETHOD(device_probe, sf_probe), 209 DEVMETHOD(device_attach, sf_attach), 210 DEVMETHOD(device_detach, sf_detach), 211 DEVMETHOD(device_shutdown, sf_shutdown), 212 DEVMETHOD(device_suspend, sf_suspend), 213 DEVMETHOD(device_resume, sf_resume), 214 215 /* bus interface */ 216 DEVMETHOD(bus_print_child, bus_generic_print_child), 217 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 218 219 /* MII interface */ 220 DEVMETHOD(miibus_readreg, sf_miibus_readreg), 221 DEVMETHOD(miibus_writereg, sf_miibus_writereg), 222 DEVMETHOD(miibus_statchg, sf_miibus_statchg), 223 224 { NULL, NULL } 225}; 226 227static driver_t sf_driver = { 228 "sf", 229 sf_methods, 230 sizeof(struct sf_softc), 231}; 232 233static devclass_t sf_devclass; 234 235DRIVER_MODULE(sf, pci, sf_driver, sf_devclass, 0, 0); 236DRIVER_MODULE(miibus, sf, miibus_driver, miibus_devclass, 0, 0); 237 238#define SF_SETBIT(sc, reg, x) \ 239 csr_write_4(sc, reg, csr_read_4(sc, reg) | (x)) 240 241#define SF_CLRBIT(sc, reg, x) \ 242 csr_write_4(sc, reg, csr_read_4(sc, reg) & ~(x)) 243 244static uint32_t 245csr_read_4(struct sf_softc *sc, int reg) 246{ 247 uint32_t val; 248 249 if (sc->sf_restype == SYS_RES_MEMORY) 250 val = CSR_READ_4(sc, (reg + SF_RMAP_INTREG_BASE)); 251 else { 252 CSR_WRITE_4(sc, SF_INDIRECTIO_ADDR, reg + SF_RMAP_INTREG_BASE); 253 val = CSR_READ_4(sc, SF_INDIRECTIO_DATA); 254 } 255 256 return (val); 257} 258 259static uint8_t 260sf_read_eeprom(struct sf_softc *sc, int reg) 261{ 262 uint8_t val; 263 264 val = (csr_read_4(sc, SF_EEADDR_BASE + 265 (reg & 0xFFFFFFFC)) >> (8 * (reg & 3))) & 0xFF; 266 267 return (val); 268} 269 270static void 271csr_write_4(struct sf_softc *sc, int reg, uint32_t val) 272{ 273 274 if (sc->sf_restype == SYS_RES_MEMORY) 275 CSR_WRITE_4(sc, (reg + SF_RMAP_INTREG_BASE), val); 276 else { 277 CSR_WRITE_4(sc, SF_INDIRECTIO_ADDR, reg + SF_RMAP_INTREG_BASE); 278 CSR_WRITE_4(sc, SF_INDIRECTIO_DATA, val); 279 } 280} 281 282/* 283 * Copy the address 'mac' into the perfect RX filter entry at 284 * offset 'idx.' The perfect filter only has 16 entries so do 285 * some sanity tests. 286 */ 287static int 288sf_setperf(struct sf_softc *sc, int idx, uint8_t *mac) 289{ 290 291 if (idx < 0 || idx > SF_RXFILT_PERFECT_CNT) 292 return (EINVAL); 293 294 if (mac == NULL) 295 return (EINVAL); 296 297 csr_write_4(sc, SF_RXFILT_PERFECT_BASE + 298 (idx * SF_RXFILT_PERFECT_SKIP) + 0, mac[5] | (mac[4] << 8)); 299 csr_write_4(sc, SF_RXFILT_PERFECT_BASE + 300 (idx * SF_RXFILT_PERFECT_SKIP) + 4, mac[3] | (mac[2] << 8)); 301 csr_write_4(sc, SF_RXFILT_PERFECT_BASE + 302 (idx * SF_RXFILT_PERFECT_SKIP) + 8, mac[1] | (mac[0] << 8)); 303 304 return (0); 305} 306 307/* 308 * Set the bit in the 512-bit hash table that corresponds to the 309 * specified mac address 'mac.' If 'prio' is nonzero, update the 310 * priority hash table instead of the filter hash table. 311 */ 312static int 313sf_sethash(struct sf_softc *sc, caddr_t mac, int prio) 314{ 315 uint32_t h; 316 317 if (mac == NULL) 318 return (EINVAL); 319 320 h = ether_crc32_be(mac, ETHER_ADDR_LEN) >> 23; 321 322 if (prio) { 323 SF_SETBIT(sc, SF_RXFILT_HASH_BASE + SF_RXFILT_HASH_PRIOOFF + 324 (SF_RXFILT_HASH_SKIP * (h >> 4)), (1 << (h & 0xF))); 325 } else { 326 SF_SETBIT(sc, SF_RXFILT_HASH_BASE + SF_RXFILT_HASH_ADDROFF + 327 (SF_RXFILT_HASH_SKIP * (h >> 4)), (1 << (h & 0xF))); 328 } 329 330 return (0); 331} 332 333#ifdef notdef 334/* 335 * Set a VLAN tag in the receive filter. 336 */ 337static int 338sf_setvlan(struct sf_softc *sc, int idx, uint32_t vlan) 339{ 340 341 if (idx < 0 || idx >> SF_RXFILT_HASH_CNT) 342 return (EINVAL); 343 344 csr_write_4(sc, SF_RXFILT_HASH_BASE + 345 (idx * SF_RXFILT_HASH_SKIP) + SF_RXFILT_HASH_VLANOFF, vlan); 346 347 return (0); 348} 349#endif 350 351static int 352sf_miibus_readreg(device_t dev, int phy, int reg) 353{ 354 struct sf_softc *sc; 355 int i; 356 uint32_t val = 0; 357 358 sc = device_get_softc(dev); 359 360 for (i = 0; i < SF_TIMEOUT; i++) { 361 val = csr_read_4(sc, SF_PHY_REG(phy, reg)); 362 if ((val & SF_MII_DATAVALID) != 0) 363 break; 364 } 365 366 if (i == SF_TIMEOUT) 367 return (0); 368 369 val &= SF_MII_DATAPORT; 370 if (val == 0xffff) 371 return (0); 372 373 return (val); 374} 375 376static int 377sf_miibus_writereg(device_t dev, int phy, int reg, int val) 378{ 379 struct sf_softc *sc; 380 int i; 381 int busy; 382 383 sc = device_get_softc(dev); 384 385 csr_write_4(sc, SF_PHY_REG(phy, reg), val); 386 387 for (i = 0; i < SF_TIMEOUT; i++) { 388 busy = csr_read_4(sc, SF_PHY_REG(phy, reg)); 389 if ((busy & SF_MII_BUSY) == 0) 390 break; 391 } 392 393 return (0); 394} 395 396static void 397sf_miibus_statchg(device_t dev) 398{ 399 struct sf_softc *sc; 400 401 sc = device_get_softc(dev); 402 taskqueue_enqueue(taskqueue_swi, &sc->sf_link_task); 403} 404 405static void 406sf_link_task(void *arg, int pending) 407{ 408 struct sf_softc *sc; 409 struct mii_data *mii; 410 struct ifnet *ifp; 411 uint32_t val; 412 413 sc = (struct sf_softc *)arg; 414 415 SF_LOCK(sc); 416 417 mii = device_get_softc(sc->sf_miibus); 418 ifp = sc->sf_ifp; 419 if (mii == NULL || ifp == NULL || 420 (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 421 SF_UNLOCK(sc); 422 return; 423 } 424 425 if (mii->mii_media_status & IFM_ACTIVE) { 426 if (IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) 427 sc->sf_link = 1; 428 } else 429 sc->sf_link = 0; 430 431 val = csr_read_4(sc, SF_MACCFG_1); 432 val &= ~SF_MACCFG1_FULLDUPLEX; 433 val &= ~(SF_MACCFG1_RX_FLOWENB | SF_MACCFG1_TX_FLOWENB); 434 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 435 val |= SF_MACCFG1_FULLDUPLEX; 436 csr_write_4(sc, SF_BKTOBKIPG, SF_IPGT_FDX); 437#ifdef notyet 438 /* Configure flow-control bits. */ 439 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & 440 IFM_ETH_RXPAUSE) != 0) 441 val |= SF_MACCFG1_RX_FLOWENB; 442 if ((IFM_OPTIONS(sc->sc_mii->mii_media_active) & 443 IFM_ETH_TXPAUSE) != 0) 444 val |= SF_MACCFG1_TX_FLOWENB; 445#endif 446 } else 447 csr_write_4(sc, SF_BKTOBKIPG, SF_IPGT_HDX); 448 449 /* Make sure to reset MAC to take changes effect. */ 450 csr_write_4(sc, SF_MACCFG_1, val | SF_MACCFG1_SOFTRESET); 451 DELAY(1000); 452 csr_write_4(sc, SF_MACCFG_1, val); 453 454 val = csr_read_4(sc, SF_TIMER_CTL); 455 if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) 456 val |= SF_TIMER_TIMES_TEN; 457 else 458 val &= ~SF_TIMER_TIMES_TEN; 459 csr_write_4(sc, SF_TIMER_CTL, val); 460 461 SF_UNLOCK(sc); 462} 463 464static void 465sf_rxfilter(struct sf_softc *sc) 466{ 467 struct ifnet *ifp; 468 int i; 469 struct ifmultiaddr *ifma; 470 uint8_t dummy[ETHER_ADDR_LEN] = { 0, 0, 0, 0, 0, 0 }; 471 uint32_t rxfilt; 472 473 ifp = sc->sf_ifp; 474 475 /* First zot all the existing filters. */ 476 for (i = 1; i < SF_RXFILT_PERFECT_CNT; i++) 477 sf_setperf(sc, i, dummy); 478 for (i = SF_RXFILT_HASH_BASE; i < (SF_RXFILT_HASH_MAX + 1); 479 i += sizeof(uint32_t)) 480 csr_write_4(sc, i, 0); 481 482 rxfilt = csr_read_4(sc, SF_RXFILT); 483 rxfilt &= ~(SF_RXFILT_PROMISC | SF_RXFILT_ALLMULTI | SF_RXFILT_BROAD); 484 if ((ifp->if_flags & IFF_BROADCAST) != 0) 485 rxfilt |= SF_RXFILT_BROAD; 486 if ((ifp->if_flags & IFF_ALLMULTI) != 0 || 487 (ifp->if_flags & IFF_PROMISC) != 0) { 488 if ((ifp->if_flags & IFF_PROMISC) != 0) 489 rxfilt |= SF_RXFILT_PROMISC; 490 if ((ifp->if_flags & IFF_ALLMULTI) != 0) 491 rxfilt |= SF_RXFILT_ALLMULTI; 492 goto done; 493 } 494 495 /* Now program new ones. */ 496 i = 1; 497 if_maddr_rlock(ifp); 498 TAILQ_FOREACH_REVERSE(ifma, &ifp->if_multiaddrs, ifmultihead, 499 ifma_link) { 500 if (ifma->ifma_addr->sa_family != AF_LINK) 501 continue; 502 /* 503 * Program the first 15 multicast groups 504 * into the perfect filter. For all others, 505 * use the hash table. 506 */ 507 if (i < SF_RXFILT_PERFECT_CNT) { 508 sf_setperf(sc, i, 509 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 510 i++; 511 continue; 512 } 513 514 sf_sethash(sc, 515 LLADDR((struct sockaddr_dl *)ifma->ifma_addr), 0); 516 } 517 if_maddr_runlock(ifp); 518 519done: 520 csr_write_4(sc, SF_RXFILT, rxfilt); 521} 522 523/* 524 * Set media options. 525 */ 526static int 527sf_ifmedia_upd(struct ifnet *ifp) 528{ 529 struct sf_softc *sc; 530 struct mii_data *mii; 531 struct mii_softc *miisc; 532 int error; 533 534 sc = ifp->if_softc; 535 SF_LOCK(sc); 536 537 mii = device_get_softc(sc->sf_miibus); 538 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 539 PHY_RESET(miisc); 540 error = mii_mediachg(mii); 541 SF_UNLOCK(sc); 542 543 return (error); 544} 545 546/* 547 * Report current media status. 548 */ 549static void 550sf_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 551{ 552 struct sf_softc *sc; 553 struct mii_data *mii; 554 555 sc = ifp->if_softc; 556 SF_LOCK(sc); 557 mii = device_get_softc(sc->sf_miibus); 558 559 mii_pollstat(mii); 560 ifmr->ifm_active = mii->mii_media_active; 561 ifmr->ifm_status = mii->mii_media_status; 562 SF_UNLOCK(sc); 563} 564 565static int 566sf_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 567{ 568 struct sf_softc *sc; 569 struct ifreq *ifr; 570 struct mii_data *mii; 571 int error, mask; 572 573 sc = ifp->if_softc; 574 ifr = (struct ifreq *)data; 575 error = 0; 576 577 switch (command) { 578 case SIOCSIFFLAGS: 579 SF_LOCK(sc); 580 if (ifp->if_flags & IFF_UP) { 581 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 582 if ((ifp->if_flags ^ sc->sf_if_flags) & 583 (IFF_PROMISC | IFF_ALLMULTI)) 584 sf_rxfilter(sc); 585 } else { 586 if (sc->sf_detach == 0) 587 sf_init_locked(sc); 588 } 589 } else { 590 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 591 sf_stop(sc); 592 } 593 sc->sf_if_flags = ifp->if_flags; 594 SF_UNLOCK(sc); 595 break; 596 case SIOCADDMULTI: 597 case SIOCDELMULTI: 598 SF_LOCK(sc); 599 sf_rxfilter(sc); 600 SF_UNLOCK(sc); 601 break; 602 case SIOCGIFMEDIA: 603 case SIOCSIFMEDIA: 604 mii = device_get_softc(sc->sf_miibus); 605 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); 606 break; 607 case SIOCSIFCAP: 608 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 609#ifdef DEVICE_POLLING 610 if ((mask & IFCAP_POLLING) != 0) { 611 if ((ifr->ifr_reqcap & IFCAP_POLLING) != 0) { 612 error = ether_poll_register(sf_poll, ifp); 613 if (error != 0) 614 break; 615 SF_LOCK(sc); 616 /* Disable interrupts. */ 617 csr_write_4(sc, SF_IMR, 0); 618 ifp->if_capenable |= IFCAP_POLLING; 619 SF_UNLOCK(sc); 620 } else { 621 error = ether_poll_deregister(ifp); 622 /* Enable interrupts. */ 623 SF_LOCK(sc); 624 csr_write_4(sc, SF_IMR, SF_INTRS); 625 ifp->if_capenable &= ~IFCAP_POLLING; 626 SF_UNLOCK(sc); 627 } 628 } 629#endif /* DEVICE_POLLING */ 630 if ((mask & IFCAP_TXCSUM) != 0) { 631 if ((IFCAP_TXCSUM & ifp->if_capabilities) != 0) { 632 SF_LOCK(sc); 633 ifp->if_capenable ^= IFCAP_TXCSUM; 634 if ((IFCAP_TXCSUM & ifp->if_capenable) != 0) { 635 ifp->if_hwassist |= SF_CSUM_FEATURES; 636 SF_SETBIT(sc, SF_GEN_ETH_CTL, 637 SF_ETHCTL_TXGFP_ENB); 638 } else { 639 ifp->if_hwassist &= ~SF_CSUM_FEATURES; 640 SF_CLRBIT(sc, SF_GEN_ETH_CTL, 641 SF_ETHCTL_TXGFP_ENB); 642 } 643 SF_UNLOCK(sc); 644 } 645 } 646 if ((mask & IFCAP_RXCSUM) != 0) { 647 if ((IFCAP_RXCSUM & ifp->if_capabilities) != 0) { 648 SF_LOCK(sc); 649 ifp->if_capenable ^= IFCAP_RXCSUM; 650 if ((IFCAP_RXCSUM & ifp->if_capenable) != 0) 651 SF_SETBIT(sc, SF_GEN_ETH_CTL, 652 SF_ETHCTL_RXGFP_ENB); 653 else 654 SF_CLRBIT(sc, SF_GEN_ETH_CTL, 655 SF_ETHCTL_RXGFP_ENB); 656 SF_UNLOCK(sc); 657 } 658 } 659 break; 660 default: 661 error = ether_ioctl(ifp, command, data); 662 break; 663 } 664 665 return (error); 666} 667 668static void 669sf_reset(struct sf_softc *sc) 670{ 671 int i; 672 673 csr_write_4(sc, SF_GEN_ETH_CTL, 0); 674 SF_SETBIT(sc, SF_MACCFG_1, SF_MACCFG1_SOFTRESET); 675 DELAY(1000); 676 SF_CLRBIT(sc, SF_MACCFG_1, SF_MACCFG1_SOFTRESET); 677 678 SF_SETBIT(sc, SF_PCI_DEVCFG, SF_PCIDEVCFG_RESET); 679 680 for (i = 0; i < SF_TIMEOUT; i++) { 681 DELAY(10); 682 if (!(csr_read_4(sc, SF_PCI_DEVCFG) & SF_PCIDEVCFG_RESET)) 683 break; 684 } 685 686 if (i == SF_TIMEOUT) 687 device_printf(sc->sf_dev, "reset never completed!\n"); 688 689 /* Wait a little while for the chip to get its brains in order. */ 690 DELAY(1000); 691} 692 693/* 694 * Probe for an Adaptec AIC-6915 chip. Check the PCI vendor and device 695 * IDs against our list and return a device name if we find a match. 696 * We also check the subsystem ID so that we can identify exactly which 697 * NIC has been found, if possible. 698 */ 699static int 700sf_probe(device_t dev) 701{ 702 struct sf_type *t; 703 uint16_t vid; 704 uint16_t did; 705 uint16_t sdid; 706 int i; 707 708 vid = pci_get_vendor(dev); 709 did = pci_get_device(dev); 710 sdid = pci_get_subdevice(dev); 711 712 t = sf_devs; 713 for (i = 0; i < sizeof(sf_devs) / sizeof(sf_devs[0]); i++, t++) { 714 if (vid == t->sf_vid && did == t->sf_did) { 715 if (sdid == t->sf_sdid) { 716 device_set_desc(dev, t->sf_sname); 717 return (BUS_PROBE_DEFAULT); 718 } 719 } 720 } 721 722 if (vid == AD_VENDORID && did == AD_DEVICEID_STARFIRE) { 723 /* unkown subdevice */ 724 device_set_desc(dev, sf_devs[0].sf_name); 725 return (BUS_PROBE_DEFAULT); 726 } 727 728 return (ENXIO); 729} 730 731/* 732 * Attach the interface. Allocate softc structures, do ifmedia 733 * setup and ethernet/BPF attach. 734 */ 735static int 736sf_attach(device_t dev) 737{ 738 int i; 739 struct sf_softc *sc; 740 struct ifnet *ifp; 741 uint32_t reg; 742 int rid, error = 0; 743 uint8_t eaddr[ETHER_ADDR_LEN]; 744 745 sc = device_get_softc(dev); 746 sc->sf_dev = dev; 747 748 mtx_init(&sc->sf_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 749 MTX_DEF); 750 callout_init_mtx(&sc->sf_co, &sc->sf_mtx, 0); 751 TASK_INIT(&sc->sf_link_task, 0, sf_link_task, sc); 752 753 /* 754 * Map control/status registers. 755 */ 756 pci_enable_busmaster(dev); 757 758 /* 759 * Prefer memory space register mapping over I/O space as the 760 * hardware requires lots of register access to get various 761 * producer/consumer index during Tx/Rx operation. However this 762 * requires large memory space(512K) to map the entire register 763 * space. 764 */ 765 sc->sf_rid = PCIR_BAR(0); 766 sc->sf_restype = SYS_RES_MEMORY; 767 sc->sf_res = bus_alloc_resource_any(dev, sc->sf_restype, &sc->sf_rid, 768 RF_ACTIVE); 769 if (sc->sf_res == NULL) { 770 reg = pci_read_config(dev, PCIR_BAR(0), 4); 771 if ((reg & PCIM_BAR_MEM_64) == PCIM_BAR_MEM_64) 772 sc->sf_rid = PCIR_BAR(2); 773 else 774 sc->sf_rid = PCIR_BAR(1); 775 sc->sf_restype = SYS_RES_IOPORT; 776 sc->sf_res = bus_alloc_resource_any(dev, sc->sf_restype, 777 &sc->sf_rid, RF_ACTIVE); 778 if (sc->sf_res == NULL) { 779 device_printf(dev, "couldn't allocate resources\n"); 780 mtx_destroy(&sc->sf_mtx); 781 return (ENXIO); 782 } 783 } 784 if (bootverbose) 785 device_printf(dev, "using %s space register mapping\n", 786 sc->sf_restype == SYS_RES_MEMORY ? "memory" : "I/O"); 787 788 reg = pci_read_config(dev, PCIR_CACHELNSZ, 1); 789 if (reg == 0) { 790 /* 791 * If cache line size is 0, MWI is not used at all, so set 792 * reasonable default. AIC-6915 supports 0, 4, 8, 16, 32 793 * and 64. 794 */ 795 reg = 16; 796 device_printf(dev, "setting PCI cache line size to %u\n", reg); 797 pci_write_config(dev, PCIR_CACHELNSZ, reg, 1); 798 } else { 799 if (bootverbose) 800 device_printf(dev, "PCI cache line size : %u\n", reg); 801 } 802 /* Enable MWI. */ 803 reg = pci_read_config(dev, PCIR_COMMAND, 2); 804 reg |= PCIM_CMD_MWRICEN; 805 pci_write_config(dev, PCIR_COMMAND, reg, 2); 806 807 /* Allocate interrupt. */ 808 rid = 0; 809 sc->sf_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 810 RF_SHAREABLE | RF_ACTIVE); 811 812 if (sc->sf_irq == NULL) { 813 device_printf(dev, "couldn't map interrupt\n"); 814 error = ENXIO; 815 goto fail; 816 } 817 818 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 819 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 820 OID_AUTO, "stats", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 821 sf_sysctl_stats, "I", "Statistics"); 822 823 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 824 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), 825 OID_AUTO, "int_mod", CTLTYPE_INT | CTLFLAG_RW, 826 &sc->sf_int_mod, 0, sysctl_hw_sf_int_mod, "I", 827 "sf interrupt moderation"); 828 /* Pull in device tunables. */ 829 sc->sf_int_mod = SF_IM_DEFAULT; 830 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 831 "int_mod", &sc->sf_int_mod); 832 if (error == 0) { 833 if (sc->sf_int_mod < SF_IM_MIN || 834 sc->sf_int_mod > SF_IM_MAX) { 835 device_printf(dev, "int_mod value out of range; " 836 "using default: %d\n", SF_IM_DEFAULT); 837 sc->sf_int_mod = SF_IM_DEFAULT; 838 } 839 } 840 841 /* Reset the adapter. */ 842 sf_reset(sc); 843 844 /* 845 * Get station address from the EEPROM. 846 */ 847 for (i = 0; i < ETHER_ADDR_LEN; i++) 848 eaddr[i] = 849 sf_read_eeprom(sc, SF_EE_NODEADDR + ETHER_ADDR_LEN - i); 850 851 /* Allocate DMA resources. */ 852 if (sf_dma_alloc(sc) != 0) { 853 error = ENOSPC; 854 goto fail; 855 } 856 857 sc->sf_txthresh = SF_MIN_TX_THRESHOLD; 858 859 ifp = sc->sf_ifp = if_alloc(IFT_ETHER); 860 if (ifp == NULL) { 861 device_printf(dev, "can not allocate ifnet structure\n"); 862 error = ENOSPC; 863 goto fail; 864 } 865 866 /* Do MII setup. */ 867 error = mii_attach(dev, &sc->sf_miibus, ifp, sf_ifmedia_upd, 868 sf_ifmedia_sts, BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 0); 869 if (error != 0) { 870 device_printf(dev, "attaching PHYs failed\n"); 871 goto fail; 872 } 873 874 ifp->if_softc = sc; 875 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 876 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 877 ifp->if_ioctl = sf_ioctl; 878 ifp->if_start = sf_start; 879 ifp->if_init = sf_init; 880 IFQ_SET_MAXLEN(&ifp->if_snd, SF_TX_DLIST_CNT - 1); 881 ifp->if_snd.ifq_drv_maxlen = SF_TX_DLIST_CNT - 1; 882 IFQ_SET_READY(&ifp->if_snd); 883 /* 884 * With the help of firmware, AIC-6915 supports 885 * Tx/Rx TCP/UDP checksum offload. 886 */ 887 ifp->if_hwassist = SF_CSUM_FEATURES; 888 ifp->if_capabilities = IFCAP_HWCSUM; 889 890 /* 891 * Call MI attach routine. 892 */ 893 ether_ifattach(ifp, eaddr); 894 895 /* VLAN capability setup. */ 896 ifp->if_capabilities |= IFCAP_VLAN_MTU; 897 ifp->if_capenable = ifp->if_capabilities; 898#ifdef DEVICE_POLLING 899 ifp->if_capabilities |= IFCAP_POLLING; 900#endif 901 /* 902 * Tell the upper layer(s) we support long frames. 903 * Must appear after the call to ether_ifattach() because 904 * ether_ifattach() sets ifi_hdrlen to the default value. 905 */ 906 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 907 908 /* Hook interrupt last to avoid having to lock softc */ 909 error = bus_setup_intr(dev, sc->sf_irq, INTR_TYPE_NET | INTR_MPSAFE, 910 NULL, sf_intr, sc, &sc->sf_intrhand); 911 912 if (error) { 913 device_printf(dev, "couldn't set up irq\n"); 914 ether_ifdetach(ifp); 915 goto fail; 916 } 917 918fail: 919 if (error) 920 sf_detach(dev); 921 922 return (error); 923} 924 925/* 926 * Shutdown hardware and free up resources. This can be called any 927 * time after the mutex has been initialized. It is called in both 928 * the error case in attach and the normal detach case so it needs 929 * to be careful about only freeing resources that have actually been 930 * allocated. 931 */ 932static int 933sf_detach(device_t dev) 934{ 935 struct sf_softc *sc; 936 struct ifnet *ifp; 937 938 sc = device_get_softc(dev); 939 ifp = sc->sf_ifp; 940 941#ifdef DEVICE_POLLING 942 if (ifp != NULL && ifp->if_capenable & IFCAP_POLLING) 943 ether_poll_deregister(ifp); 944#endif 945 946 /* These should only be active if attach succeeded */ 947 if (device_is_attached(dev)) { 948 SF_LOCK(sc); 949 sc->sf_detach = 1; 950 sf_stop(sc); 951 SF_UNLOCK(sc); 952 callout_drain(&sc->sf_co); 953 taskqueue_drain(taskqueue_swi, &sc->sf_link_task); 954 if (ifp != NULL) 955 ether_ifdetach(ifp); 956 } 957 if (sc->sf_miibus) { 958 device_delete_child(dev, sc->sf_miibus); 959 sc->sf_miibus = NULL; 960 } 961 bus_generic_detach(dev); 962 963 if (sc->sf_intrhand != NULL) 964 bus_teardown_intr(dev, sc->sf_irq, sc->sf_intrhand); 965 if (sc->sf_irq != NULL) 966 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sf_irq); 967 if (sc->sf_res != NULL) 968 bus_release_resource(dev, sc->sf_restype, sc->sf_rid, 969 sc->sf_res); 970 971 sf_dma_free(sc); 972 if (ifp != NULL) 973 if_free(ifp); 974 975 mtx_destroy(&sc->sf_mtx); 976 977 return (0); 978} 979 980struct sf_dmamap_arg { 981 bus_addr_t sf_busaddr; 982}; 983 984static void 985sf_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 986{ 987 struct sf_dmamap_arg *ctx; 988 989 if (error != 0) 990 return; 991 ctx = arg; 992 ctx->sf_busaddr = segs[0].ds_addr; 993} 994 995static int 996sf_dma_alloc(struct sf_softc *sc) 997{ 998 struct sf_dmamap_arg ctx; 999 struct sf_txdesc *txd; 1000 struct sf_rxdesc *rxd; 1001 bus_addr_t lowaddr; 1002 bus_addr_t rx_ring_end, rx_cring_end; 1003 bus_addr_t tx_ring_end, tx_cring_end; 1004 int error, i; 1005 1006 lowaddr = BUS_SPACE_MAXADDR; 1007 1008again: 1009 /* Create parent DMA tag. */ 1010 error = bus_dma_tag_create( 1011 bus_get_dma_tag(sc->sf_dev), /* parent */ 1012 1, 0, /* alignment, boundary */ 1013 lowaddr, /* lowaddr */ 1014 BUS_SPACE_MAXADDR, /* highaddr */ 1015 NULL, NULL, /* filter, filterarg */ 1016 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 1017 0, /* nsegments */ 1018 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 1019 0, /* flags */ 1020 NULL, NULL, /* lockfunc, lockarg */ 1021 &sc->sf_cdata.sf_parent_tag); 1022 if (error != 0) { 1023 device_printf(sc->sf_dev, "failed to create parent DMA tag\n"); 1024 goto fail; 1025 } 1026 /* Create tag for Tx ring. */ 1027 error = bus_dma_tag_create(sc->sf_cdata.sf_parent_tag,/* parent */ 1028 SF_RING_ALIGN, 0, /* alignment, boundary */ 1029 BUS_SPACE_MAXADDR, /* lowaddr */ 1030 BUS_SPACE_MAXADDR, /* highaddr */ 1031 NULL, NULL, /* filter, filterarg */ 1032 SF_TX_DLIST_SIZE, /* maxsize */ 1033 1, /* nsegments */ 1034 SF_TX_DLIST_SIZE, /* maxsegsize */ 1035 0, /* flags */ 1036 NULL, NULL, /* lockfunc, lockarg */ 1037 &sc->sf_cdata.sf_tx_ring_tag); 1038 if (error != 0) { 1039 device_printf(sc->sf_dev, "failed to create Tx ring DMA tag\n"); 1040 goto fail; 1041 } 1042 1043 /* Create tag for Tx completion ring. */ 1044 error = bus_dma_tag_create(sc->sf_cdata.sf_parent_tag,/* parent */ 1045 SF_RING_ALIGN, 0, /* alignment, boundary */ 1046 BUS_SPACE_MAXADDR, /* lowaddr */ 1047 BUS_SPACE_MAXADDR, /* highaddr */ 1048 NULL, NULL, /* filter, filterarg */ 1049 SF_TX_CLIST_SIZE, /* maxsize */ 1050 1, /* nsegments */ 1051 SF_TX_CLIST_SIZE, /* maxsegsize */ 1052 0, /* flags */ 1053 NULL, NULL, /* lockfunc, lockarg */ 1054 &sc->sf_cdata.sf_tx_cring_tag); 1055 if (error != 0) { 1056 device_printf(sc->sf_dev, 1057 "failed to create Tx completion ring DMA tag\n"); 1058 goto fail; 1059 } 1060 1061 /* Create tag for Rx ring. */ 1062 error = bus_dma_tag_create(sc->sf_cdata.sf_parent_tag,/* parent */ 1063 SF_RING_ALIGN, 0, /* alignment, boundary */ 1064 BUS_SPACE_MAXADDR, /* lowaddr */ 1065 BUS_SPACE_MAXADDR, /* highaddr */ 1066 NULL, NULL, /* filter, filterarg */ 1067 SF_RX_DLIST_SIZE, /* maxsize */ 1068 1, /* nsegments */ 1069 SF_RX_DLIST_SIZE, /* maxsegsize */ 1070 0, /* flags */ 1071 NULL, NULL, /* lockfunc, lockarg */ 1072 &sc->sf_cdata.sf_rx_ring_tag); 1073 if (error != 0) { 1074 device_printf(sc->sf_dev, 1075 "failed to create Rx ring DMA tag\n"); 1076 goto fail; 1077 } 1078 1079 /* Create tag for Rx completion ring. */ 1080 error = bus_dma_tag_create(sc->sf_cdata.sf_parent_tag,/* parent */ 1081 SF_RING_ALIGN, 0, /* alignment, boundary */ 1082 BUS_SPACE_MAXADDR, /* lowaddr */ 1083 BUS_SPACE_MAXADDR, /* highaddr */ 1084 NULL, NULL, /* filter, filterarg */ 1085 SF_RX_CLIST_SIZE, /* maxsize */ 1086 1, /* nsegments */ 1087 SF_RX_CLIST_SIZE, /* maxsegsize */ 1088 0, /* flags */ 1089 NULL, NULL, /* lockfunc, lockarg */ 1090 &sc->sf_cdata.sf_rx_cring_tag); 1091 if (error != 0) { 1092 device_printf(sc->sf_dev, 1093 "failed to create Rx completion ring DMA tag\n"); 1094 goto fail; 1095 } 1096 1097 /* Create tag for Tx buffers. */ 1098 error = bus_dma_tag_create(sc->sf_cdata.sf_parent_tag,/* parent */ 1099 1, 0, /* alignment, boundary */ 1100 BUS_SPACE_MAXADDR, /* lowaddr */ 1101 BUS_SPACE_MAXADDR, /* highaddr */ 1102 NULL, NULL, /* filter, filterarg */ 1103 MCLBYTES * SF_MAXTXSEGS, /* maxsize */ 1104 SF_MAXTXSEGS, /* nsegments */ 1105 MCLBYTES, /* maxsegsize */ 1106 0, /* flags */ 1107 NULL, NULL, /* lockfunc, lockarg */ 1108 &sc->sf_cdata.sf_tx_tag); 1109 if (error != 0) { 1110 device_printf(sc->sf_dev, "failed to create Tx DMA tag\n"); 1111 goto fail; 1112 } 1113 1114 /* Create tag for Rx buffers. */ 1115 error = bus_dma_tag_create(sc->sf_cdata.sf_parent_tag,/* parent */ 1116 SF_RX_ALIGN, 0, /* alignment, boundary */ 1117 BUS_SPACE_MAXADDR, /* lowaddr */ 1118 BUS_SPACE_MAXADDR, /* highaddr */ 1119 NULL, NULL, /* filter, filterarg */ 1120 MCLBYTES, /* maxsize */ 1121 1, /* nsegments */ 1122 MCLBYTES, /* maxsegsize */ 1123 0, /* flags */ 1124 NULL, NULL, /* lockfunc, lockarg */ 1125 &sc->sf_cdata.sf_rx_tag); 1126 if (error != 0) { 1127 device_printf(sc->sf_dev, "failed to create Rx DMA tag\n"); 1128 goto fail; 1129 } 1130 1131 /* Allocate DMA'able memory and load the DMA map for Tx ring. */ 1132 error = bus_dmamem_alloc(sc->sf_cdata.sf_tx_ring_tag, 1133 (void **)&sc->sf_rdata.sf_tx_ring, BUS_DMA_WAITOK | 1134 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->sf_cdata.sf_tx_ring_map); 1135 if (error != 0) { 1136 device_printf(sc->sf_dev, 1137 "failed to allocate DMA'able memory for Tx ring\n"); 1138 goto fail; 1139 } 1140 1141 ctx.sf_busaddr = 0; 1142 error = bus_dmamap_load(sc->sf_cdata.sf_tx_ring_tag, 1143 sc->sf_cdata.sf_tx_ring_map, sc->sf_rdata.sf_tx_ring, 1144 SF_TX_DLIST_SIZE, sf_dmamap_cb, &ctx, 0); 1145 if (error != 0 || ctx.sf_busaddr == 0) { 1146 device_printf(sc->sf_dev, 1147 "failed to load DMA'able memory for Tx ring\n"); 1148 goto fail; 1149 } 1150 sc->sf_rdata.sf_tx_ring_paddr = ctx.sf_busaddr; 1151 1152 /* 1153 * Allocate DMA'able memory and load the DMA map for Tx completion ring. 1154 */ 1155 error = bus_dmamem_alloc(sc->sf_cdata.sf_tx_cring_tag, 1156 (void **)&sc->sf_rdata.sf_tx_cring, BUS_DMA_WAITOK | 1157 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->sf_cdata.sf_tx_cring_map); 1158 if (error != 0) { 1159 device_printf(sc->sf_dev, 1160 "failed to allocate DMA'able memory for " 1161 "Tx completion ring\n"); 1162 goto fail; 1163 } 1164 1165 ctx.sf_busaddr = 0; 1166 error = bus_dmamap_load(sc->sf_cdata.sf_tx_cring_tag, 1167 sc->sf_cdata.sf_tx_cring_map, sc->sf_rdata.sf_tx_cring, 1168 SF_TX_CLIST_SIZE, sf_dmamap_cb, &ctx, 0); 1169 if (error != 0 || ctx.sf_busaddr == 0) { 1170 device_printf(sc->sf_dev, 1171 "failed to load DMA'able memory for Tx completion ring\n"); 1172 goto fail; 1173 } 1174 sc->sf_rdata.sf_tx_cring_paddr = ctx.sf_busaddr; 1175 1176 /* Allocate DMA'able memory and load the DMA map for Rx ring. */ 1177 error = bus_dmamem_alloc(sc->sf_cdata.sf_rx_ring_tag, 1178 (void **)&sc->sf_rdata.sf_rx_ring, BUS_DMA_WAITOK | 1179 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->sf_cdata.sf_rx_ring_map); 1180 if (error != 0) { 1181 device_printf(sc->sf_dev, 1182 "failed to allocate DMA'able memory for Rx ring\n"); 1183 goto fail; 1184 } 1185 1186 ctx.sf_busaddr = 0; 1187 error = bus_dmamap_load(sc->sf_cdata.sf_rx_ring_tag, 1188 sc->sf_cdata.sf_rx_ring_map, sc->sf_rdata.sf_rx_ring, 1189 SF_RX_DLIST_SIZE, sf_dmamap_cb, &ctx, 0); 1190 if (error != 0 || ctx.sf_busaddr == 0) { 1191 device_printf(sc->sf_dev, 1192 "failed to load DMA'able memory for Rx ring\n"); 1193 goto fail; 1194 } 1195 sc->sf_rdata.sf_rx_ring_paddr = ctx.sf_busaddr; 1196 1197 /* 1198 * Allocate DMA'able memory and load the DMA map for Rx completion ring. 1199 */ 1200 error = bus_dmamem_alloc(sc->sf_cdata.sf_rx_cring_tag, 1201 (void **)&sc->sf_rdata.sf_rx_cring, BUS_DMA_WAITOK | 1202 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->sf_cdata.sf_rx_cring_map); 1203 if (error != 0) { 1204 device_printf(sc->sf_dev, 1205 "failed to allocate DMA'able memory for " 1206 "Rx completion ring\n"); 1207 goto fail; 1208 } 1209 1210 ctx.sf_busaddr = 0; 1211 error = bus_dmamap_load(sc->sf_cdata.sf_rx_cring_tag, 1212 sc->sf_cdata.sf_rx_cring_map, sc->sf_rdata.sf_rx_cring, 1213 SF_RX_CLIST_SIZE, sf_dmamap_cb, &ctx, 0); 1214 if (error != 0 || ctx.sf_busaddr == 0) { 1215 device_printf(sc->sf_dev, 1216 "failed to load DMA'able memory for Rx completion ring\n"); 1217 goto fail; 1218 } 1219 sc->sf_rdata.sf_rx_cring_paddr = ctx.sf_busaddr; 1220 1221 /* 1222 * Tx desciptor ring and Tx completion ring should be addressed in 1223 * the same 4GB space. The same rule applys to Rx ring and Rx 1224 * completion ring. Unfortunately there is no way to specify this 1225 * boundary restriction with bus_dma(9). So just try to allocate 1226 * without the restriction and check the restriction was satisfied. 1227 * If not, fall back to 32bit dma addressing mode which always 1228 * guarantees the restriction. 1229 */ 1230 tx_ring_end = sc->sf_rdata.sf_tx_ring_paddr + SF_TX_DLIST_SIZE; 1231 tx_cring_end = sc->sf_rdata.sf_tx_cring_paddr + SF_TX_CLIST_SIZE; 1232 rx_ring_end = sc->sf_rdata.sf_rx_ring_paddr + SF_RX_DLIST_SIZE; 1233 rx_cring_end = sc->sf_rdata.sf_rx_cring_paddr + SF_RX_CLIST_SIZE; 1234 if ((SF_ADDR_HI(sc->sf_rdata.sf_tx_ring_paddr) != 1235 SF_ADDR_HI(tx_cring_end)) || 1236 (SF_ADDR_HI(sc->sf_rdata.sf_tx_cring_paddr) != 1237 SF_ADDR_HI(tx_ring_end)) || 1238 (SF_ADDR_HI(sc->sf_rdata.sf_rx_ring_paddr) != 1239 SF_ADDR_HI(rx_cring_end)) || 1240 (SF_ADDR_HI(sc->sf_rdata.sf_rx_cring_paddr) != 1241 SF_ADDR_HI(rx_ring_end))) { 1242 device_printf(sc->sf_dev, 1243 "switching to 32bit DMA mode\n"); 1244 sf_dma_free(sc); 1245 /* Limit DMA address space to 32bit and try again. */ 1246 lowaddr = BUS_SPACE_MAXADDR_32BIT; 1247 goto again; 1248 } 1249 1250 /* Create DMA maps for Tx buffers. */ 1251 for (i = 0; i < SF_TX_DLIST_CNT; i++) { 1252 txd = &sc->sf_cdata.sf_txdesc[i]; 1253 txd->tx_m = NULL; 1254 txd->ndesc = 0; 1255 txd->tx_dmamap = NULL; 1256 error = bus_dmamap_create(sc->sf_cdata.sf_tx_tag, 0, 1257 &txd->tx_dmamap); 1258 if (error != 0) { 1259 device_printf(sc->sf_dev, 1260 "failed to create Tx dmamap\n"); 1261 goto fail; 1262 } 1263 } 1264 /* Create DMA maps for Rx buffers. */ 1265 if ((error = bus_dmamap_create(sc->sf_cdata.sf_rx_tag, 0, 1266 &sc->sf_cdata.sf_rx_sparemap)) != 0) { 1267 device_printf(sc->sf_dev, 1268 "failed to create spare Rx dmamap\n"); 1269 goto fail; 1270 } 1271 for (i = 0; i < SF_RX_DLIST_CNT; i++) { 1272 rxd = &sc->sf_cdata.sf_rxdesc[i]; 1273 rxd->rx_m = NULL; 1274 rxd->rx_dmamap = NULL; 1275 error = bus_dmamap_create(sc->sf_cdata.sf_rx_tag, 0, 1276 &rxd->rx_dmamap); 1277 if (error != 0) { 1278 device_printf(sc->sf_dev, 1279 "failed to create Rx dmamap\n"); 1280 goto fail; 1281 } 1282 } 1283 1284fail: 1285 return (error); 1286} 1287 1288static void 1289sf_dma_free(struct sf_softc *sc) 1290{ 1291 struct sf_txdesc *txd; 1292 struct sf_rxdesc *rxd; 1293 int i; 1294 1295 /* Tx ring. */ 1296 if (sc->sf_cdata.sf_tx_ring_tag) { 1297 if (sc->sf_cdata.sf_tx_ring_map) 1298 bus_dmamap_unload(sc->sf_cdata.sf_tx_ring_tag, 1299 sc->sf_cdata.sf_tx_ring_map); 1300 if (sc->sf_cdata.sf_tx_ring_map && 1301 sc->sf_rdata.sf_tx_ring) 1302 bus_dmamem_free(sc->sf_cdata.sf_tx_ring_tag, 1303 sc->sf_rdata.sf_tx_ring, 1304 sc->sf_cdata.sf_tx_ring_map); 1305 sc->sf_rdata.sf_tx_ring = NULL; 1306 sc->sf_cdata.sf_tx_ring_map = NULL; 1307 bus_dma_tag_destroy(sc->sf_cdata.sf_tx_ring_tag); 1308 sc->sf_cdata.sf_tx_ring_tag = NULL; 1309 } 1310 /* Tx completion ring. */ 1311 if (sc->sf_cdata.sf_tx_cring_tag) { 1312 if (sc->sf_cdata.sf_tx_cring_map) 1313 bus_dmamap_unload(sc->sf_cdata.sf_tx_cring_tag, 1314 sc->sf_cdata.sf_tx_cring_map); 1315 if (sc->sf_cdata.sf_tx_cring_map && 1316 sc->sf_rdata.sf_tx_cring) 1317 bus_dmamem_free(sc->sf_cdata.sf_tx_cring_tag, 1318 sc->sf_rdata.sf_tx_cring, 1319 sc->sf_cdata.sf_tx_cring_map); 1320 sc->sf_rdata.sf_tx_cring = NULL; 1321 sc->sf_cdata.sf_tx_cring_map = NULL; 1322 bus_dma_tag_destroy(sc->sf_cdata.sf_tx_cring_tag); 1323 sc->sf_cdata.sf_tx_cring_tag = NULL; 1324 } 1325 /* Rx ring. */ 1326 if (sc->sf_cdata.sf_rx_ring_tag) { 1327 if (sc->sf_cdata.sf_rx_ring_map) 1328 bus_dmamap_unload(sc->sf_cdata.sf_rx_ring_tag, 1329 sc->sf_cdata.sf_rx_ring_map); 1330 if (sc->sf_cdata.sf_rx_ring_map && 1331 sc->sf_rdata.sf_rx_ring) 1332 bus_dmamem_free(sc->sf_cdata.sf_rx_ring_tag, 1333 sc->sf_rdata.sf_rx_ring, 1334 sc->sf_cdata.sf_rx_ring_map); 1335 sc->sf_rdata.sf_rx_ring = NULL; 1336 sc->sf_cdata.sf_rx_ring_map = NULL; 1337 bus_dma_tag_destroy(sc->sf_cdata.sf_rx_ring_tag); 1338 sc->sf_cdata.sf_rx_ring_tag = NULL; 1339 } 1340 /* Rx completion ring. */ 1341 if (sc->sf_cdata.sf_rx_cring_tag) { 1342 if (sc->sf_cdata.sf_rx_cring_map) 1343 bus_dmamap_unload(sc->sf_cdata.sf_rx_cring_tag, 1344 sc->sf_cdata.sf_rx_cring_map); 1345 if (sc->sf_cdata.sf_rx_cring_map && 1346 sc->sf_rdata.sf_rx_cring) 1347 bus_dmamem_free(sc->sf_cdata.sf_rx_cring_tag, 1348 sc->sf_rdata.sf_rx_cring, 1349 sc->sf_cdata.sf_rx_cring_map); 1350 sc->sf_rdata.sf_rx_cring = NULL; 1351 sc->sf_cdata.sf_rx_cring_map = NULL; 1352 bus_dma_tag_destroy(sc->sf_cdata.sf_rx_cring_tag); 1353 sc->sf_cdata.sf_rx_cring_tag = NULL; 1354 } 1355 /* Tx buffers. */ 1356 if (sc->sf_cdata.sf_tx_tag) { 1357 for (i = 0; i < SF_TX_DLIST_CNT; i++) { 1358 txd = &sc->sf_cdata.sf_txdesc[i]; 1359 if (txd->tx_dmamap) { 1360 bus_dmamap_destroy(sc->sf_cdata.sf_tx_tag, 1361 txd->tx_dmamap); 1362 txd->tx_dmamap = NULL; 1363 } 1364 } 1365 bus_dma_tag_destroy(sc->sf_cdata.sf_tx_tag); 1366 sc->sf_cdata.sf_tx_tag = NULL; 1367 } 1368 /* Rx buffers. */ 1369 if (sc->sf_cdata.sf_rx_tag) { 1370 for (i = 0; i < SF_RX_DLIST_CNT; i++) { 1371 rxd = &sc->sf_cdata.sf_rxdesc[i]; 1372 if (rxd->rx_dmamap) { 1373 bus_dmamap_destroy(sc->sf_cdata.sf_rx_tag, 1374 rxd->rx_dmamap); 1375 rxd->rx_dmamap = NULL; 1376 } 1377 } 1378 if (sc->sf_cdata.sf_rx_sparemap) { 1379 bus_dmamap_destroy(sc->sf_cdata.sf_rx_tag, 1380 sc->sf_cdata.sf_rx_sparemap); 1381 sc->sf_cdata.sf_rx_sparemap = 0; 1382 } 1383 bus_dma_tag_destroy(sc->sf_cdata.sf_rx_tag); 1384 sc->sf_cdata.sf_rx_tag = NULL; 1385 } 1386 1387 if (sc->sf_cdata.sf_parent_tag) { 1388 bus_dma_tag_destroy(sc->sf_cdata.sf_parent_tag); 1389 sc->sf_cdata.sf_parent_tag = NULL; 1390 } 1391} 1392 1393static int 1394sf_init_rx_ring(struct sf_softc *sc) 1395{ 1396 struct sf_ring_data *rd; 1397 int i; 1398 1399 sc->sf_cdata.sf_rxc_cons = 0; 1400 1401 rd = &sc->sf_rdata; 1402 bzero(rd->sf_rx_ring, SF_RX_DLIST_SIZE); 1403 bzero(rd->sf_rx_cring, SF_RX_CLIST_SIZE); 1404 1405 for (i = 0; i < SF_RX_DLIST_CNT; i++) { 1406 if (sf_newbuf(sc, i) != 0) 1407 return (ENOBUFS); 1408 } 1409 1410 bus_dmamap_sync(sc->sf_cdata.sf_rx_cring_tag, 1411 sc->sf_cdata.sf_rx_cring_map, 1412 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1413 bus_dmamap_sync(sc->sf_cdata.sf_rx_ring_tag, 1414 sc->sf_cdata.sf_rx_ring_map, 1415 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1416 1417 return (0); 1418} 1419 1420static void 1421sf_init_tx_ring(struct sf_softc *sc) 1422{ 1423 struct sf_ring_data *rd; 1424 int i; 1425 1426 sc->sf_cdata.sf_tx_prod = 0; 1427 sc->sf_cdata.sf_tx_cnt = 0; 1428 sc->sf_cdata.sf_txc_cons = 0; 1429 1430 rd = &sc->sf_rdata; 1431 bzero(rd->sf_tx_ring, SF_TX_DLIST_SIZE); 1432 bzero(rd->sf_tx_cring, SF_TX_CLIST_SIZE); 1433 for (i = 0; i < SF_TX_DLIST_CNT; i++) { 1434 rd->sf_tx_ring[i].sf_tx_ctrl = htole32(SF_TX_DESC_ID); 1435 sc->sf_cdata.sf_txdesc[i].tx_m = NULL; 1436 sc->sf_cdata.sf_txdesc[i].ndesc = 0; 1437 } 1438 rd->sf_tx_ring[i].sf_tx_ctrl |= htole32(SF_TX_DESC_END); 1439 1440 bus_dmamap_sync(sc->sf_cdata.sf_tx_ring_tag, 1441 sc->sf_cdata.sf_tx_ring_map, 1442 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1443 bus_dmamap_sync(sc->sf_cdata.sf_tx_cring_tag, 1444 sc->sf_cdata.sf_tx_cring_map, 1445 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1446} 1447 1448/* 1449 * Initialize an RX descriptor and attach an MBUF cluster. 1450 */ 1451static int 1452sf_newbuf(struct sf_softc *sc, int idx) 1453{ 1454 struct sf_rx_rdesc *desc; 1455 struct sf_rxdesc *rxd; 1456 struct mbuf *m; 1457 bus_dma_segment_t segs[1]; 1458 bus_dmamap_t map; 1459 int nsegs; 1460 1461 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 1462 if (m == NULL) 1463 return (ENOBUFS); 1464 m->m_len = m->m_pkthdr.len = MCLBYTES; 1465 m_adj(m, sizeof(uint32_t)); 1466 1467 if (bus_dmamap_load_mbuf_sg(sc->sf_cdata.sf_rx_tag, 1468 sc->sf_cdata.sf_rx_sparemap, m, segs, &nsegs, 0) != 0) { 1469 m_freem(m); 1470 return (ENOBUFS); 1471 } 1472 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 1473 1474 rxd = &sc->sf_cdata.sf_rxdesc[idx]; 1475 if (rxd->rx_m != NULL) { 1476 bus_dmamap_sync(sc->sf_cdata.sf_rx_tag, rxd->rx_dmamap, 1477 BUS_DMASYNC_POSTREAD); 1478 bus_dmamap_unload(sc->sf_cdata.sf_rx_tag, rxd->rx_dmamap); 1479 } 1480 map = rxd->rx_dmamap; 1481 rxd->rx_dmamap = sc->sf_cdata.sf_rx_sparemap; 1482 sc->sf_cdata.sf_rx_sparemap = map; 1483 bus_dmamap_sync(sc->sf_cdata.sf_rx_tag, rxd->rx_dmamap, 1484 BUS_DMASYNC_PREREAD); 1485 rxd->rx_m = m; 1486 desc = &sc->sf_rdata.sf_rx_ring[idx]; 1487 desc->sf_addr = htole64(segs[0].ds_addr); 1488 1489 return (0); 1490} 1491 1492#ifndef __NO_STRICT_ALIGNMENT 1493static __inline void 1494sf_fixup_rx(struct mbuf *m) 1495{ 1496 int i; 1497 uint16_t *src, *dst; 1498 1499 src = mtod(m, uint16_t *); 1500 dst = src - 1; 1501 1502 for (i = 0; i < (m->m_len / sizeof(uint16_t) + 1); i++) 1503 *dst++ = *src++; 1504 1505 m->m_data -= ETHER_ALIGN; 1506} 1507#endif 1508 1509/* 1510 * The starfire is programmed to use 'normal' mode for packet reception, 1511 * which means we use the consumer/producer model for both the buffer 1512 * descriptor queue and the completion descriptor queue. The only problem 1513 * with this is that it involves a lot of register accesses: we have to 1514 * read the RX completion consumer and producer indexes and the RX buffer 1515 * producer index, plus the RX completion consumer and RX buffer producer 1516 * indexes have to be updated. It would have been easier if Adaptec had 1517 * put each index in a separate register, especially given that the damn 1518 * NIC has a 512K register space. 1519 * 1520 * In spite of all the lovely features that Adaptec crammed into the 6915, 1521 * it is marred by one truly stupid design flaw, which is that receive 1522 * buffer addresses must be aligned on a longword boundary. This forces 1523 * the packet payload to be unaligned, which is suboptimal on the x86 and 1524 * completely unuseable on the Alpha. Our only recourse is to copy received 1525 * packets into properly aligned buffers before handing them off. 1526 */ 1527static int 1528sf_rxeof(struct sf_softc *sc) 1529{ 1530 struct mbuf *m; 1531 struct ifnet *ifp; 1532 struct sf_rxdesc *rxd; 1533 struct sf_rx_rcdesc *cur_cmp; 1534 int cons, eidx, prog, rx_npkts; 1535 uint32_t status, status2; 1536 1537 SF_LOCK_ASSERT(sc); 1538 1539 ifp = sc->sf_ifp; 1540 rx_npkts = 0; 1541 1542 bus_dmamap_sync(sc->sf_cdata.sf_rx_ring_tag, 1543 sc->sf_cdata.sf_rx_ring_map, 1544 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1545 bus_dmamap_sync(sc->sf_cdata.sf_rx_cring_tag, 1546 sc->sf_cdata.sf_rx_cring_map, 1547 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1548 1549 /* 1550 * To reduce register access, directly read Receive completion 1551 * queue entry. 1552 */ 1553 eidx = 0; 1554 prog = 0; 1555 for (cons = sc->sf_cdata.sf_rxc_cons; ; SF_INC(cons, SF_RX_CLIST_CNT)) { 1556 cur_cmp = &sc->sf_rdata.sf_rx_cring[cons]; 1557 status = le32toh(cur_cmp->sf_rx_status1); 1558 if (status == 0) 1559 break; 1560#ifdef DEVICE_POLLING 1561 if ((ifp->if_capenable & IFCAP_POLLING) != 0) { 1562 if (sc->rxcycles <= 0) 1563 break; 1564 sc->rxcycles--; 1565 } 1566#endif 1567 prog++; 1568 eidx = (status & SF_RX_CMPDESC_EIDX) >> 16; 1569 rxd = &sc->sf_cdata.sf_rxdesc[eidx]; 1570 m = rxd->rx_m; 1571 1572 /* 1573 * Note, if_ipackets and if_ierrors counters 1574 * are handled in sf_stats_update(). 1575 */ 1576 if ((status & SF_RXSTAT1_OK) == 0) { 1577 cur_cmp->sf_rx_status1 = 0; 1578 continue; 1579 } 1580 1581 if (sf_newbuf(sc, eidx) != 0) { 1582 ifp->if_iqdrops++; 1583 cur_cmp->sf_rx_status1 = 0; 1584 continue; 1585 } 1586 1587 /* AIC-6915 supports TCP/UDP checksum offload. */ 1588 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) { 1589 status2 = le32toh(cur_cmp->sf_rx_status2); 1590 /* 1591 * Sometimes AIC-6915 generates an interrupt to 1592 * warn RxGFP stall with bad checksum bit set 1593 * in status word. I'm not sure what conditioan 1594 * triggers it but recevied packet's checksum 1595 * was correct even though AIC-6915 does not 1596 * agree on this. This may be an indication of 1597 * firmware bug. To fix the issue, do not rely 1598 * on bad checksum bit in status word and let 1599 * upper layer verify integrity of received 1600 * frame. 1601 * Another nice feature of AIC-6915 is hardware 1602 * assistance of checksum calculation by 1603 * providing partial checksum value for received 1604 * frame. The partial checksum value can be used 1605 * to accelerate checksum computation for 1606 * fragmented TCP/UDP packets. Upper network 1607 * stack already takes advantage of the partial 1608 * checksum value in IP reassembly stage. But 1609 * I'm not sure the correctness of the partial 1610 * hardware checksum assistance as frequent 1611 * RxGFP stalls are seen on non-fragmented 1612 * frames. Due to the nature of the complexity 1613 * of checksum computation code in firmware it's 1614 * possible to see another bug in RxGFP so 1615 * ignore checksum assistance for fragmented 1616 * frames. This can be changed in future. 1617 */ 1618 if ((status2 & SF_RXSTAT2_FRAG) == 0) { 1619 if ((status2 & (SF_RXSTAT2_TCP | 1620 SF_RXSTAT2_UDP)) != 0) { 1621 if ((status2 & SF_RXSTAT2_CSUM_OK)) { 1622 m->m_pkthdr.csum_flags = 1623 CSUM_DATA_VALID | 1624 CSUM_PSEUDO_HDR; 1625 m->m_pkthdr.csum_data = 0xffff; 1626 } 1627 } 1628 } 1629#ifdef SF_PARTIAL_CSUM_SUPPORT 1630 else if ((status2 & SF_RXSTAT2_FRAG) != 0) { 1631 if ((status2 & (SF_RXSTAT2_TCP | 1632 SF_RXSTAT2_UDP)) != 0) { 1633 if ((status2 & SF_RXSTAT2_PCSUM_OK)) { 1634 m->m_pkthdr.csum_flags = 1635 CSUM_DATA_VALID; 1636 m->m_pkthdr.csum_data = 1637 (status & 1638 SF_RX_CMPDESC_CSUM2); 1639 } 1640 } 1641 } 1642#endif 1643 } 1644 1645 m->m_pkthdr.len = m->m_len = status & SF_RX_CMPDESC_LEN; 1646#ifndef __NO_STRICT_ALIGNMENT 1647 sf_fixup_rx(m); 1648#endif 1649 m->m_pkthdr.rcvif = ifp; 1650 1651 SF_UNLOCK(sc); 1652 (*ifp->if_input)(ifp, m); 1653 SF_LOCK(sc); 1654 rx_npkts++; 1655 1656 /* Clear completion status. */ 1657 cur_cmp->sf_rx_status1 = 0; 1658 } 1659 1660 if (prog > 0) { 1661 sc->sf_cdata.sf_rxc_cons = cons; 1662 bus_dmamap_sync(sc->sf_cdata.sf_rx_ring_tag, 1663 sc->sf_cdata.sf_rx_ring_map, 1664 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1665 bus_dmamap_sync(sc->sf_cdata.sf_rx_cring_tag, 1666 sc->sf_cdata.sf_rx_cring_map, 1667 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1668 1669 /* Update Rx completion Q1 consumer index. */ 1670 csr_write_4(sc, SF_CQ_CONSIDX, 1671 (csr_read_4(sc, SF_CQ_CONSIDX) & ~SF_CQ_CONSIDX_RXQ1) | 1672 (cons & SF_CQ_CONSIDX_RXQ1)); 1673 /* Update Rx descriptor Q1 ptr. */ 1674 csr_write_4(sc, SF_RXDQ_PTR_Q1, 1675 (csr_read_4(sc, SF_RXDQ_PTR_Q1) & ~SF_RXDQ_PRODIDX) | 1676 (eidx & SF_RXDQ_PRODIDX)); 1677 } 1678 return (rx_npkts); 1679} 1680 1681/* 1682 * Read the transmit status from the completion queue and release 1683 * mbufs. Note that the buffer descriptor index in the completion 1684 * descriptor is an offset from the start of the transmit buffer 1685 * descriptor list in bytes. This is important because the manual 1686 * gives the impression that it should match the producer/consumer 1687 * index, which is the offset in 8 byte blocks. 1688 */ 1689static void 1690sf_txeof(struct sf_softc *sc) 1691{ 1692 struct sf_txdesc *txd; 1693 struct sf_tx_rcdesc *cur_cmp; 1694 struct ifnet *ifp; 1695 uint32_t status; 1696 int cons, idx, prod; 1697 1698 SF_LOCK_ASSERT(sc); 1699 1700 ifp = sc->sf_ifp; 1701 1702 bus_dmamap_sync(sc->sf_cdata.sf_tx_cring_tag, 1703 sc->sf_cdata.sf_tx_cring_map, 1704 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); 1705 1706 cons = sc->sf_cdata.sf_txc_cons; 1707 prod = (csr_read_4(sc, SF_CQ_PRODIDX) & SF_TXDQ_PRODIDX_HIPRIO) >> 16; 1708 if (prod == cons) 1709 return; 1710 1711 for (; cons != prod; SF_INC(cons, SF_TX_CLIST_CNT)) { 1712 cur_cmp = &sc->sf_rdata.sf_tx_cring[cons]; 1713 status = le32toh(cur_cmp->sf_tx_status1); 1714 if (status == 0) 1715 break; 1716 switch (status & SF_TX_CMPDESC_TYPE) { 1717 case SF_TXCMPTYPE_TX: 1718 /* Tx complete entry. */ 1719 break; 1720 case SF_TXCMPTYPE_DMA: 1721 /* DMA complete entry. */ 1722 idx = status & SF_TX_CMPDESC_IDX; 1723 idx = idx / sizeof(struct sf_tx_rdesc); 1724 /* 1725 * We don't need to check Tx status here. 1726 * SF_ISR_TX_LOFIFO intr would handle this. 1727 * Note, if_opackets, if_collisions and if_oerrors 1728 * counters are handled in sf_stats_update(). 1729 */ 1730 txd = &sc->sf_cdata.sf_txdesc[idx]; 1731 if (txd->tx_m != NULL) { 1732 bus_dmamap_sync(sc->sf_cdata.sf_tx_tag, 1733 txd->tx_dmamap, 1734 BUS_DMASYNC_POSTWRITE); 1735 bus_dmamap_unload(sc->sf_cdata.sf_tx_tag, 1736 txd->tx_dmamap); 1737 m_freem(txd->tx_m); 1738 txd->tx_m = NULL; 1739 } 1740 sc->sf_cdata.sf_tx_cnt -= txd->ndesc; 1741 KASSERT(sc->sf_cdata.sf_tx_cnt >= 0, 1742 ("%s: Active Tx desc counter was garbled\n", 1743 __func__)); 1744 txd->ndesc = 0; 1745 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1746 break; 1747 default: 1748 /* It should not happen. */ 1749 device_printf(sc->sf_dev, 1750 "unknown Tx completion type : 0x%08x : %d : %d\n", 1751 status, cons, prod); 1752 break; 1753 } 1754 cur_cmp->sf_tx_status1 = 0; 1755 } 1756 1757 sc->sf_cdata.sf_txc_cons = cons; 1758 bus_dmamap_sync(sc->sf_cdata.sf_tx_cring_tag, 1759 sc->sf_cdata.sf_tx_cring_map, 1760 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1761 1762 if (sc->sf_cdata.sf_tx_cnt == 0) 1763 sc->sf_watchdog_timer = 0; 1764 1765 /* Update Tx completion consumer index. */ 1766 csr_write_4(sc, SF_CQ_CONSIDX, 1767 (csr_read_4(sc, SF_CQ_CONSIDX) & 0xffff) | 1768 ((cons << 16) & 0xffff0000)); 1769} 1770 1771static void 1772sf_txthresh_adjust(struct sf_softc *sc) 1773{ 1774 uint32_t txfctl; 1775 1776 device_printf(sc->sf_dev, "Tx underrun -- "); 1777 if (sc->sf_txthresh < SF_MAX_TX_THRESHOLD) { 1778 txfctl = csr_read_4(sc, SF_TX_FRAMCTL); 1779 /* Increase Tx threshold 256 bytes. */ 1780 sc->sf_txthresh += 16; 1781 if (sc->sf_txthresh > SF_MAX_TX_THRESHOLD) 1782 sc->sf_txthresh = SF_MAX_TX_THRESHOLD; 1783 txfctl &= ~SF_TXFRMCTL_TXTHRESH; 1784 txfctl |= sc->sf_txthresh; 1785 printf("increasing Tx threshold to %d bytes\n", 1786 sc->sf_txthresh * SF_TX_THRESHOLD_UNIT); 1787 csr_write_4(sc, SF_TX_FRAMCTL, txfctl); 1788 } else 1789 printf("\n"); 1790} 1791 1792#ifdef DEVICE_POLLING 1793static int 1794sf_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1795{ 1796 struct sf_softc *sc; 1797 uint32_t status; 1798 int rx_npkts; 1799 1800 sc = ifp->if_softc; 1801 rx_npkts = 0; 1802 SF_LOCK(sc); 1803 1804 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1805 SF_UNLOCK(sc); 1806 return (rx_npkts); 1807 } 1808 1809 sc->rxcycles = count; 1810 rx_npkts = sf_rxeof(sc); 1811 sf_txeof(sc); 1812 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1813 sf_start_locked(ifp); 1814 1815 if (cmd == POLL_AND_CHECK_STATUS) { 1816 /* Reading the ISR register clears all interrrupts. */ 1817 status = csr_read_4(sc, SF_ISR); 1818 1819 if ((status & SF_ISR_ABNORMALINTR) != 0) { 1820 if ((status & SF_ISR_STATSOFLOW) != 0) 1821 sf_stats_update(sc); 1822 else if ((status & SF_ISR_TX_LOFIFO) != 0) 1823 sf_txthresh_adjust(sc); 1824 else if ((status & SF_ISR_DMAERR) != 0) { 1825 device_printf(sc->sf_dev, 1826 "DMA error, resetting\n"); 1827 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1828 sf_init_locked(sc); 1829 SF_UNLOCK(sc); 1830 return (rx_npkts); 1831 } else if ((status & SF_ISR_NO_TX_CSUM) != 0) { 1832 sc->sf_statistics.sf_tx_gfp_stall++; 1833#ifdef SF_GFP_DEBUG 1834 device_printf(sc->sf_dev, 1835 "TxGFP is not responding!\n"); 1836#endif 1837 } else if ((status & SF_ISR_RXGFP_NORESP) != 0) { 1838 sc->sf_statistics.sf_rx_gfp_stall++; 1839#ifdef SF_GFP_DEBUG 1840 device_printf(sc->sf_dev, 1841 "RxGFP is not responding!\n"); 1842#endif 1843 } 1844 } 1845 } 1846 1847 SF_UNLOCK(sc); 1848 return (rx_npkts); 1849} 1850#endif /* DEVICE_POLLING */ 1851 1852static void 1853sf_intr(void *arg) 1854{ 1855 struct sf_softc *sc; 1856 struct ifnet *ifp; 1857 uint32_t status; 1858 1859 sc = (struct sf_softc *)arg; 1860 SF_LOCK(sc); 1861 1862 if (sc->sf_suspended != 0) 1863 goto done_locked; 1864 1865 /* Reading the ISR register clears all interrrupts. */ 1866 status = csr_read_4(sc, SF_ISR); 1867 if (status == 0 || status == 0xffffffff || 1868 (status & SF_ISR_PCIINT_ASSERTED) == 0) 1869 goto done_locked; 1870 1871 ifp = sc->sf_ifp; 1872#ifdef DEVICE_POLLING 1873 if ((ifp->if_capenable & IFCAP_POLLING) != 0) 1874 goto done_locked; 1875#endif 1876 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1877 goto done_locked; 1878 1879 /* Disable interrupts. */ 1880 csr_write_4(sc, SF_IMR, 0x00000000); 1881 1882 for (; (status & SF_INTRS) != 0;) { 1883 if ((status & SF_ISR_RXDQ1_DMADONE) != 0) 1884 sf_rxeof(sc); 1885 1886 if ((status & (SF_ISR_TX_TXDONE | SF_ISR_TX_DMADONE | 1887 SF_ISR_TX_QUEUEDONE)) != 0) 1888 sf_txeof(sc); 1889 1890 if ((status & SF_ISR_ABNORMALINTR) != 0) { 1891 if ((status & SF_ISR_STATSOFLOW) != 0) 1892 sf_stats_update(sc); 1893 else if ((status & SF_ISR_TX_LOFIFO) != 0) 1894 sf_txthresh_adjust(sc); 1895 else if ((status & SF_ISR_DMAERR) != 0) { 1896 device_printf(sc->sf_dev, 1897 "DMA error, resetting\n"); 1898 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1899 sf_init_locked(sc); 1900 SF_UNLOCK(sc); 1901 return; 1902 } else if ((status & SF_ISR_NO_TX_CSUM) != 0) { 1903 sc->sf_statistics.sf_tx_gfp_stall++; 1904#ifdef SF_GFP_DEBUG 1905 device_printf(sc->sf_dev, 1906 "TxGFP is not responding!\n"); 1907#endif 1908 } 1909 else if ((status & SF_ISR_RXGFP_NORESP) != 0) { 1910 sc->sf_statistics.sf_rx_gfp_stall++; 1911#ifdef SF_GFP_DEBUG 1912 device_printf(sc->sf_dev, 1913 "RxGFP is not responding!\n"); 1914#endif 1915 } 1916 } 1917 /* Reading the ISR register clears all interrrupts. */ 1918 status = csr_read_4(sc, SF_ISR); 1919 } 1920 1921 /* Re-enable interrupts. */ 1922 csr_write_4(sc, SF_IMR, SF_INTRS); 1923 1924 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1925 sf_start_locked(ifp); 1926done_locked: 1927 SF_UNLOCK(sc); 1928} 1929 1930static void 1931sf_download_fw(struct sf_softc *sc) 1932{ 1933 uint32_t gfpinst; 1934 int i, ndx; 1935 uint8_t *p; 1936 1937 /* 1938 * A FP instruction is composed of 48bits so we have to 1939 * write it with two parts. 1940 */ 1941 p = txfwdata; 1942 ndx = 0; 1943 for (i = 0; i < sizeof(txfwdata) / SF_GFP_INST_BYTES; i++) { 1944 gfpinst = p[2] << 24 | p[3] << 16 | p[4] << 8 | p[5]; 1945 csr_write_4(sc, SF_TXGFP_MEM_BASE + ndx * 4, gfpinst); 1946 gfpinst = p[0] << 8 | p[1]; 1947 csr_write_4(sc, SF_TXGFP_MEM_BASE + (ndx + 1) * 4, gfpinst); 1948 p += SF_GFP_INST_BYTES; 1949 ndx += 2; 1950 } 1951 if (bootverbose) 1952 device_printf(sc->sf_dev, "%d Tx instructions downloaded\n", i); 1953 1954 p = rxfwdata; 1955 ndx = 0; 1956 for (i = 0; i < sizeof(rxfwdata) / SF_GFP_INST_BYTES; i++) { 1957 gfpinst = p[2] << 24 | p[3] << 16 | p[4] << 8 | p[5]; 1958 csr_write_4(sc, SF_RXGFP_MEM_BASE + (ndx * 4), gfpinst); 1959 gfpinst = p[0] << 8 | p[1]; 1960 csr_write_4(sc, SF_RXGFP_MEM_BASE + (ndx + 1) * 4, gfpinst); 1961 p += SF_GFP_INST_BYTES; 1962 ndx += 2; 1963 } 1964 if (bootverbose) 1965 device_printf(sc->sf_dev, "%d Rx instructions downloaded\n", i); 1966} 1967 1968static void 1969sf_init(void *xsc) 1970{ 1971 struct sf_softc *sc; 1972 1973 sc = (struct sf_softc *)xsc; 1974 SF_LOCK(sc); 1975 sf_init_locked(sc); 1976 SF_UNLOCK(sc); 1977} 1978 1979static void 1980sf_init_locked(struct sf_softc *sc) 1981{ 1982 struct ifnet *ifp; 1983 struct mii_data *mii; 1984 uint8_t eaddr[ETHER_ADDR_LEN]; 1985 bus_addr_t addr; 1986 int i; 1987 1988 SF_LOCK_ASSERT(sc); 1989 ifp = sc->sf_ifp; 1990 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 1991 return; 1992 mii = device_get_softc(sc->sf_miibus); 1993 1994 sf_stop(sc); 1995 /* Reset the hardware to a known state. */ 1996 sf_reset(sc); 1997 1998 /* Init all the receive filter registers */ 1999 for (i = SF_RXFILT_PERFECT_BASE; 2000 i < (SF_RXFILT_HASH_MAX + 1); i += sizeof(uint32_t)) 2001 csr_write_4(sc, i, 0); 2002 2003 /* Empty stats counter registers. */ 2004 for (i = SF_STATS_BASE; i < (SF_STATS_END + 1); i += sizeof(uint32_t)) 2005 csr_write_4(sc, i, 0); 2006 2007 /* Init our MAC address. */ 2008 bcopy(IF_LLADDR(sc->sf_ifp), eaddr, sizeof(eaddr)); 2009 csr_write_4(sc, SF_PAR0, 2010 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]); 2011 csr_write_4(sc, SF_PAR1, eaddr[0] << 8 | eaddr[1]); 2012 sf_setperf(sc, 0, eaddr); 2013 2014 if (sf_init_rx_ring(sc) == ENOBUFS) { 2015 device_printf(sc->sf_dev, 2016 "initialization failed: no memory for rx buffers\n"); 2017 return; 2018 } 2019 2020 sf_init_tx_ring(sc); 2021 2022 /* 2023 * 16 perfect address filtering. 2024 * Hash only multicast destination address, Accept matching 2025 * frames regardless of VLAN ID. 2026 */ 2027 csr_write_4(sc, SF_RXFILT, SF_PERFMODE_NORMAL | SF_HASHMODE_ANYVLAN); 2028 2029 /* 2030 * Set Rx filter. 2031 */ 2032 sf_rxfilter(sc); 2033 2034 /* Init the completion queue indexes. */ 2035 csr_write_4(sc, SF_CQ_CONSIDX, 0); 2036 csr_write_4(sc, SF_CQ_PRODIDX, 0); 2037 2038 /* Init the RX completion queue. */ 2039 addr = sc->sf_rdata.sf_rx_cring_paddr; 2040 csr_write_4(sc, SF_CQ_ADDR_HI, SF_ADDR_HI(addr)); 2041 csr_write_4(sc, SF_RXCQ_CTL_1, SF_ADDR_LO(addr) & SF_RXCQ_ADDR); 2042 if (SF_ADDR_HI(addr) != 0) 2043 SF_SETBIT(sc, SF_RXCQ_CTL_1, SF_RXCQ_USE_64BIT); 2044 /* Set RX completion queue type 2. */ 2045 SF_SETBIT(sc, SF_RXCQ_CTL_1, SF_RXCQTYPE_2); 2046 csr_write_4(sc, SF_RXCQ_CTL_2, 0); 2047 2048 /* 2049 * Init RX DMA control. 2050 * default RxHighPriority Threshold, 2051 * default RxBurstSize, 128bytes. 2052 */ 2053 SF_SETBIT(sc, SF_RXDMA_CTL, 2054 SF_RXDMA_REPORTBADPKTS | 2055 (SF_RXDMA_HIGHPRIO_THRESH << 8) | 2056 SF_RXDMA_BURST); 2057 2058 /* Init the RX buffer descriptor queue. */ 2059 addr = sc->sf_rdata.sf_rx_ring_paddr; 2060 csr_write_4(sc, SF_RXDQ_ADDR_HI, SF_ADDR_HI(addr)); 2061 csr_write_4(sc, SF_RXDQ_ADDR_Q1, SF_ADDR_LO(addr)); 2062 2063 /* Set RX queue buffer length. */ 2064 csr_write_4(sc, SF_RXDQ_CTL_1, 2065 ((MCLBYTES - sizeof(uint32_t)) << 16) | 2066 SF_RXDQCTL_64BITBADDR | SF_RXDQCTL_VARIABLE); 2067 2068 if (SF_ADDR_HI(addr) != 0) 2069 SF_SETBIT(sc, SF_RXDQ_CTL_1, SF_RXDQCTL_64BITDADDR); 2070 csr_write_4(sc, SF_RXDQ_PTR_Q1, SF_RX_DLIST_CNT - 1); 2071 csr_write_4(sc, SF_RXDQ_CTL_2, 0); 2072 2073 /* Init the TX completion queue */ 2074 addr = sc->sf_rdata.sf_tx_cring_paddr; 2075 csr_write_4(sc, SF_TXCQ_CTL, SF_ADDR_LO(addr) & SF_TXCQ_ADDR); 2076 if (SF_ADDR_HI(addr) != 0) 2077 SF_SETBIT(sc, SF_TXCQ_CTL, SF_TXCQ_USE_64BIT); 2078 2079 /* Init the TX buffer descriptor queue. */ 2080 addr = sc->sf_rdata.sf_tx_ring_paddr; 2081 csr_write_4(sc, SF_TXDQ_ADDR_HI, SF_ADDR_HI(addr)); 2082 csr_write_4(sc, SF_TXDQ_ADDR_HIPRIO, 0); 2083 csr_write_4(sc, SF_TXDQ_ADDR_LOPRIO, SF_ADDR_LO(addr)); 2084 csr_write_4(sc, SF_TX_FRAMCTL, 2085 SF_TXFRMCTL_CPLAFTERTX | sc->sf_txthresh); 2086 csr_write_4(sc, SF_TXDQ_CTL, 2087 SF_TXDMA_HIPRIO_THRESH << 24 | 2088 SF_TXSKIPLEN_0BYTES << 16 | 2089 SF_TXDDMA_BURST << 8 | 2090 SF_TXBUFDESC_TYPE2 | SF_TXMINSPACE_UNLIMIT); 2091 if (SF_ADDR_HI(addr) != 0) 2092 SF_SETBIT(sc, SF_TXDQ_CTL, SF_TXDQCTL_64BITADDR); 2093 2094 /* Set VLAN Type register. */ 2095 csr_write_4(sc, SF_VLANTYPE, ETHERTYPE_VLAN); 2096 2097 /* Set TxPause Timer. */ 2098 csr_write_4(sc, SF_TXPAUSETIMER, 0xffff); 2099 2100 /* Enable autopadding of short TX frames. */ 2101 SF_SETBIT(sc, SF_MACCFG_1, SF_MACCFG1_AUTOPAD); 2102 SF_SETBIT(sc, SF_MACCFG_2, SF_MACCFG2_AUTOVLANPAD); 2103 /* Make sure to reset MAC to take changes effect. */ 2104 SF_SETBIT(sc, SF_MACCFG_1, SF_MACCFG1_SOFTRESET); 2105 DELAY(1000); 2106 SF_CLRBIT(sc, SF_MACCFG_1, SF_MACCFG1_SOFTRESET); 2107 2108 /* Enable PCI bus master. */ 2109 SF_SETBIT(sc, SF_PCI_DEVCFG, SF_PCIDEVCFG_PCIMEN); 2110 2111 /* Load StarFire firmware. */ 2112 sf_download_fw(sc); 2113 2114 /* Intialize interrupt moderation. */ 2115 csr_write_4(sc, SF_TIMER_CTL, SF_TIMER_IMASK_MODE | SF_TIMER_TIMES_TEN | 2116 (sc->sf_int_mod & SF_TIMER_IMASK_INTERVAL)); 2117 2118#ifdef DEVICE_POLLING 2119 /* Disable interrupts if we are polling. */ 2120 if ((ifp->if_capenable & IFCAP_POLLING) != 0) 2121 csr_write_4(sc, SF_IMR, 0x00000000); 2122 else 2123#endif 2124 /* Enable interrupts. */ 2125 csr_write_4(sc, SF_IMR, SF_INTRS); 2126 SF_SETBIT(sc, SF_PCI_DEVCFG, SF_PCIDEVCFG_INTR_ENB); 2127 2128 /* Enable the RX and TX engines. */ 2129 csr_write_4(sc, SF_GEN_ETH_CTL, 2130 SF_ETHCTL_RX_ENB | SF_ETHCTL_RXDMA_ENB | 2131 SF_ETHCTL_TX_ENB | SF_ETHCTL_TXDMA_ENB); 2132 2133 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0) 2134 SF_SETBIT(sc, SF_GEN_ETH_CTL, SF_ETHCTL_TXGFP_ENB); 2135 else 2136 SF_CLRBIT(sc, SF_GEN_ETH_CTL, SF_ETHCTL_TXGFP_ENB); 2137 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) 2138 SF_SETBIT(sc, SF_GEN_ETH_CTL, SF_ETHCTL_RXGFP_ENB); 2139 else 2140 SF_CLRBIT(sc, SF_GEN_ETH_CTL, SF_ETHCTL_RXGFP_ENB); 2141 2142 sc->sf_link = 0; 2143 mii_mediachg(mii); 2144 2145 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2146 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2147 2148 callout_reset(&sc->sf_co, hz, sf_tick, sc); 2149} 2150 2151static int 2152sf_encap(struct sf_softc *sc, struct mbuf **m_head) 2153{ 2154 struct sf_txdesc *txd; 2155 struct sf_tx_rdesc *desc; 2156 struct mbuf *m; 2157 bus_dmamap_t map; 2158 bus_dma_segment_t txsegs[SF_MAXTXSEGS]; 2159 int error, i, nsegs, prod, si; 2160 int avail, nskip; 2161 2162 SF_LOCK_ASSERT(sc); 2163 2164 m = *m_head; 2165 prod = sc->sf_cdata.sf_tx_prod; 2166 txd = &sc->sf_cdata.sf_txdesc[prod]; 2167 map = txd->tx_dmamap; 2168 error = bus_dmamap_load_mbuf_sg(sc->sf_cdata.sf_tx_tag, map, 2169 *m_head, txsegs, &nsegs, BUS_DMA_NOWAIT); 2170 if (error == EFBIG) { 2171 m = m_collapse(*m_head, M_DONTWAIT, SF_MAXTXSEGS); 2172 if (m == NULL) { 2173 m_freem(*m_head); 2174 *m_head = NULL; 2175 return (ENOBUFS); 2176 } 2177 *m_head = m; 2178 error = bus_dmamap_load_mbuf_sg(sc->sf_cdata.sf_tx_tag, 2179 map, *m_head, txsegs, &nsegs, BUS_DMA_NOWAIT); 2180 if (error != 0) { 2181 m_freem(*m_head); 2182 *m_head = NULL; 2183 return (error); 2184 } 2185 } else if (error != 0) 2186 return (error); 2187 if (nsegs == 0) { 2188 m_freem(*m_head); 2189 *m_head = NULL; 2190 return (EIO); 2191 } 2192 2193 /* Check number of available descriptors. */ 2194 avail = (SF_TX_DLIST_CNT - 1) - sc->sf_cdata.sf_tx_cnt; 2195 if (avail < nsegs) { 2196 bus_dmamap_unload(sc->sf_cdata.sf_tx_tag, map); 2197 return (ENOBUFS); 2198 } 2199 nskip = 0; 2200 if (prod + nsegs >= SF_TX_DLIST_CNT) { 2201 nskip = SF_TX_DLIST_CNT - prod - 1; 2202 if (avail < nsegs + nskip) { 2203 bus_dmamap_unload(sc->sf_cdata.sf_tx_tag, map); 2204 return (ENOBUFS); 2205 } 2206 } 2207 2208 bus_dmamap_sync(sc->sf_cdata.sf_tx_tag, map, BUS_DMASYNC_PREWRITE); 2209 2210 si = prod; 2211 for (i = 0; i < nsegs; i++) { 2212 desc = &sc->sf_rdata.sf_tx_ring[prod]; 2213 desc->sf_tx_ctrl = htole32(SF_TX_DESC_ID | 2214 (txsegs[i].ds_len & SF_TX_DESC_FRAGLEN)); 2215 desc->sf_tx_reserved = 0; 2216 desc->sf_addr = htole64(txsegs[i].ds_addr); 2217 if (i == 0 && prod + nsegs >= SF_TX_DLIST_CNT) { 2218 /* Queue wraps! */ 2219 desc->sf_tx_ctrl |= htole32(SF_TX_DESC_END); 2220 prod = 0; 2221 } else 2222 SF_INC(prod, SF_TX_DLIST_CNT); 2223 } 2224 /* Update producer index. */ 2225 sc->sf_cdata.sf_tx_prod = prod; 2226 sc->sf_cdata.sf_tx_cnt += nsegs + nskip; 2227 2228 desc = &sc->sf_rdata.sf_tx_ring[si]; 2229 /* Check TDP/UDP checksum offload request. */ 2230 if ((m->m_pkthdr.csum_flags & SF_CSUM_FEATURES) != 0) 2231 desc->sf_tx_ctrl |= htole32(SF_TX_DESC_CALTCP); 2232 desc->sf_tx_ctrl |= 2233 htole32(SF_TX_DESC_CRCEN | SF_TX_DESC_INTR | (nsegs << 16)); 2234 2235 txd->tx_dmamap = map; 2236 txd->tx_m = m; 2237 txd->ndesc = nsegs + nskip; 2238 2239 return (0); 2240} 2241 2242static void 2243sf_start(struct ifnet *ifp) 2244{ 2245 struct sf_softc *sc; 2246 2247 sc = ifp->if_softc; 2248 SF_LOCK(sc); 2249 sf_start_locked(ifp); 2250 SF_UNLOCK(sc); 2251} 2252 2253static void 2254sf_start_locked(struct ifnet *ifp) 2255{ 2256 struct sf_softc *sc; 2257 struct mbuf *m_head; 2258 int enq; 2259 2260 sc = ifp->if_softc; 2261 SF_LOCK_ASSERT(sc); 2262 2263 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != 2264 IFF_DRV_RUNNING || sc->sf_link == 0) 2265 return; 2266 2267 /* 2268 * Since we don't know when descriptor wrap occurrs in advance 2269 * limit available number of active Tx descriptor counter to be 2270 * higher than maximum number of DMA segments allowed in driver. 2271 */ 2272 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd) && 2273 sc->sf_cdata.sf_tx_cnt < SF_TX_DLIST_CNT - SF_MAXTXSEGS; ) { 2274 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 2275 if (m_head == NULL) 2276 break; 2277 /* 2278 * Pack the data into the transmit ring. If we 2279 * don't have room, set the OACTIVE flag and wait 2280 * for the NIC to drain the ring. 2281 */ 2282 if (sf_encap(sc, &m_head)) { 2283 if (m_head == NULL) 2284 break; 2285 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 2286 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 2287 break; 2288 } 2289 2290 enq++; 2291 /* 2292 * If there's a BPF listener, bounce a copy of this frame 2293 * to him. 2294 */ 2295 ETHER_BPF_MTAP(ifp, m_head); 2296 } 2297 2298 if (enq > 0) { 2299 bus_dmamap_sync(sc->sf_cdata.sf_tx_ring_tag, 2300 sc->sf_cdata.sf_tx_ring_map, 2301 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2302 /* Kick transmit. */ 2303 csr_write_4(sc, SF_TXDQ_PRODIDX, 2304 sc->sf_cdata.sf_tx_prod * (sizeof(struct sf_tx_rdesc) / 8)); 2305 2306 /* Set a timeout in case the chip goes out to lunch. */ 2307 sc->sf_watchdog_timer = 5; 2308 } 2309} 2310 2311static void 2312sf_stop(struct sf_softc *sc) 2313{ 2314 struct sf_txdesc *txd; 2315 struct sf_rxdesc *rxd; 2316 struct ifnet *ifp; 2317 int i; 2318 2319 SF_LOCK_ASSERT(sc); 2320 2321 ifp = sc->sf_ifp; 2322 2323 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2324 sc->sf_link = 0; 2325 callout_stop(&sc->sf_co); 2326 sc->sf_watchdog_timer = 0; 2327 2328 /* Reading the ISR register clears all interrrupts. */ 2329 csr_read_4(sc, SF_ISR); 2330 /* Disable further interrupts. */ 2331 csr_write_4(sc, SF_IMR, 0); 2332 2333 /* Disable Tx/Rx egine. */ 2334 csr_write_4(sc, SF_GEN_ETH_CTL, 0); 2335 2336 csr_write_4(sc, SF_CQ_CONSIDX, 0); 2337 csr_write_4(sc, SF_CQ_PRODIDX, 0); 2338 csr_write_4(sc, SF_RXDQ_ADDR_Q1, 0); 2339 csr_write_4(sc, SF_RXDQ_CTL_1, 0); 2340 csr_write_4(sc, SF_RXDQ_PTR_Q1, 0); 2341 csr_write_4(sc, SF_TXCQ_CTL, 0); 2342 csr_write_4(sc, SF_TXDQ_ADDR_HIPRIO, 0); 2343 csr_write_4(sc, SF_TXDQ_CTL, 0); 2344 2345 /* 2346 * Free RX and TX mbufs still in the queues. 2347 */ 2348 for (i = 0; i < SF_RX_DLIST_CNT; i++) { 2349 rxd = &sc->sf_cdata.sf_rxdesc[i]; 2350 if (rxd->rx_m != NULL) { 2351 bus_dmamap_sync(sc->sf_cdata.sf_rx_tag, 2352 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); 2353 bus_dmamap_unload(sc->sf_cdata.sf_rx_tag, 2354 rxd->rx_dmamap); 2355 m_freem(rxd->rx_m); 2356 rxd->rx_m = NULL; 2357 } 2358 } 2359 for (i = 0; i < SF_TX_DLIST_CNT; i++) { 2360 txd = &sc->sf_cdata.sf_txdesc[i]; 2361 if (txd->tx_m != NULL) { 2362 bus_dmamap_sync(sc->sf_cdata.sf_tx_tag, 2363 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); 2364 bus_dmamap_unload(sc->sf_cdata.sf_tx_tag, 2365 txd->tx_dmamap); 2366 m_freem(txd->tx_m); 2367 txd->tx_m = NULL; 2368 txd->ndesc = 0; 2369 } 2370 } 2371} 2372 2373static void 2374sf_tick(void *xsc) 2375{ 2376 struct sf_softc *sc; 2377 struct mii_data *mii; 2378 2379 sc = xsc; 2380 SF_LOCK_ASSERT(sc); 2381 mii = device_get_softc(sc->sf_miibus); 2382 mii_tick(mii); 2383 sf_stats_update(sc); 2384 sf_watchdog(sc); 2385 callout_reset(&sc->sf_co, hz, sf_tick, sc); 2386} 2387 2388/* 2389 * Note: it is important that this function not be interrupted. We 2390 * use a two-stage register access scheme: if we are interrupted in 2391 * between setting the indirect address register and reading from the 2392 * indirect data register, the contents of the address register could 2393 * be changed out from under us. 2394 */ 2395static void 2396sf_stats_update(struct sf_softc *sc) 2397{ 2398 struct ifnet *ifp; 2399 struct sf_stats now, *stats, *nstats; 2400 int i; 2401 2402 SF_LOCK_ASSERT(sc); 2403 2404 ifp = sc->sf_ifp; 2405 stats = &now; 2406 2407 stats->sf_tx_frames = 2408 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_FRAMES); 2409 stats->sf_tx_single_colls = 2410 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_SINGLE_COL); 2411 stats->sf_tx_multi_colls = 2412 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_MULTI_COL); 2413 stats->sf_tx_crcerrs = 2414 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_CRC_ERRS); 2415 stats->sf_tx_bytes = 2416 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_BYTES); 2417 stats->sf_tx_deferred = 2418 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_DEFERRED); 2419 stats->sf_tx_late_colls = 2420 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_LATE_COL); 2421 stats->sf_tx_pause_frames = 2422 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_PAUSE); 2423 stats->sf_tx_control_frames = 2424 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_CTL_FRAME); 2425 stats->sf_tx_excess_colls = 2426 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_EXCESS_COL); 2427 stats->sf_tx_excess_defer = 2428 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_EXCESS_DEF); 2429 stats->sf_tx_mcast_frames = 2430 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_MULTI); 2431 stats->sf_tx_bcast_frames = 2432 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_BCAST); 2433 stats->sf_tx_frames_lost = 2434 csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_FRAME_LOST); 2435 stats->sf_rx_frames = 2436 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_FRAMES); 2437 stats->sf_rx_crcerrs = 2438 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_CRC_ERRS); 2439 stats->sf_rx_alignerrs = 2440 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_ALIGN_ERRS); 2441 stats->sf_rx_bytes = 2442 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_BYTES); 2443 stats->sf_rx_pause_frames = 2444 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_PAUSE); 2445 stats->sf_rx_control_frames = 2446 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_CTL_FRAME); 2447 stats->sf_rx_unsup_control_frames = 2448 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_UNSUP_FRAME); 2449 stats->sf_rx_giants = 2450 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_GIANTS); 2451 stats->sf_rx_runts = 2452 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_RUNTS); 2453 stats->sf_rx_jabbererrs = 2454 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_JABBER); 2455 stats->sf_rx_fragments = 2456 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_FRAGMENTS); 2457 stats->sf_rx_pkts_64 = 2458 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_64); 2459 stats->sf_rx_pkts_65_127 = 2460 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_65_127); 2461 stats->sf_rx_pkts_128_255 = 2462 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_128_255); 2463 stats->sf_rx_pkts_256_511 = 2464 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_256_511); 2465 stats->sf_rx_pkts_512_1023 = 2466 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_512_1023); 2467 stats->sf_rx_pkts_1024_1518 = 2468 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_1024_1518); 2469 stats->sf_rx_frames_lost = 2470 csr_read_4(sc, SF_STATS_BASE + SF_STATS_RX_FRAME_LOST); 2471 /* Lower 16bits are valid. */ 2472 stats->sf_tx_underruns = 2473 (csr_read_4(sc, SF_STATS_BASE + SF_STATS_TX_UNDERRUN) & 0xffff); 2474 2475 /* Empty stats counter registers. */ 2476 for (i = SF_STATS_BASE; i < (SF_STATS_END + 1); i += sizeof(uint32_t)) 2477 csr_write_4(sc, i, 0); 2478 2479 ifp->if_opackets += (u_long)stats->sf_tx_frames; 2480 2481 ifp->if_collisions += (u_long)stats->sf_tx_single_colls + 2482 (u_long)stats->sf_tx_multi_colls; 2483 2484 ifp->if_oerrors += (u_long)stats->sf_tx_excess_colls + 2485 (u_long)stats->sf_tx_excess_defer + 2486 (u_long)stats->sf_tx_frames_lost; 2487 2488 ifp->if_ipackets += (u_long)stats->sf_rx_frames; 2489 2490 ifp->if_ierrors += (u_long)stats->sf_rx_crcerrs + 2491 (u_long)stats->sf_rx_alignerrs + 2492 (u_long)stats->sf_rx_giants + 2493 (u_long)stats->sf_rx_runts + 2494 (u_long)stats->sf_rx_jabbererrs + 2495 (u_long)stats->sf_rx_frames_lost; 2496 2497 nstats = &sc->sf_statistics; 2498 2499 nstats->sf_tx_frames += stats->sf_tx_frames; 2500 nstats->sf_tx_single_colls += stats->sf_tx_single_colls; 2501 nstats->sf_tx_multi_colls += stats->sf_tx_multi_colls; 2502 nstats->sf_tx_crcerrs += stats->sf_tx_crcerrs; 2503 nstats->sf_tx_bytes += stats->sf_tx_bytes; 2504 nstats->sf_tx_deferred += stats->sf_tx_deferred; 2505 nstats->sf_tx_late_colls += stats->sf_tx_late_colls; 2506 nstats->sf_tx_pause_frames += stats->sf_tx_pause_frames; 2507 nstats->sf_tx_control_frames += stats->sf_tx_control_frames; 2508 nstats->sf_tx_excess_colls += stats->sf_tx_excess_colls; 2509 nstats->sf_tx_excess_defer += stats->sf_tx_excess_defer; 2510 nstats->sf_tx_mcast_frames += stats->sf_tx_mcast_frames; 2511 nstats->sf_tx_bcast_frames += stats->sf_tx_bcast_frames; 2512 nstats->sf_tx_frames_lost += stats->sf_tx_frames_lost; 2513 nstats->sf_rx_frames += stats->sf_rx_frames; 2514 nstats->sf_rx_crcerrs += stats->sf_rx_crcerrs; 2515 nstats->sf_rx_alignerrs += stats->sf_rx_alignerrs; 2516 nstats->sf_rx_bytes += stats->sf_rx_bytes; 2517 nstats->sf_rx_pause_frames += stats->sf_rx_pause_frames; 2518 nstats->sf_rx_control_frames += stats->sf_rx_control_frames; 2519 nstats->sf_rx_unsup_control_frames += stats->sf_rx_unsup_control_frames; 2520 nstats->sf_rx_giants += stats->sf_rx_giants; 2521 nstats->sf_rx_runts += stats->sf_rx_runts; 2522 nstats->sf_rx_jabbererrs += stats->sf_rx_jabbererrs; 2523 nstats->sf_rx_fragments += stats->sf_rx_fragments; 2524 nstats->sf_rx_pkts_64 += stats->sf_rx_pkts_64; 2525 nstats->sf_rx_pkts_65_127 += stats->sf_rx_pkts_65_127; 2526 nstats->sf_rx_pkts_128_255 += stats->sf_rx_pkts_128_255; 2527 nstats->sf_rx_pkts_256_511 += stats->sf_rx_pkts_256_511; 2528 nstats->sf_rx_pkts_512_1023 += stats->sf_rx_pkts_512_1023; 2529 nstats->sf_rx_pkts_1024_1518 += stats->sf_rx_pkts_1024_1518; 2530 nstats->sf_rx_frames_lost += stats->sf_rx_frames_lost; 2531 nstats->sf_tx_underruns += stats->sf_tx_underruns; 2532} 2533 2534static void 2535sf_watchdog(struct sf_softc *sc) 2536{ 2537 struct ifnet *ifp; 2538 2539 SF_LOCK_ASSERT(sc); 2540 2541 if (sc->sf_watchdog_timer == 0 || --sc->sf_watchdog_timer) 2542 return; 2543 2544 ifp = sc->sf_ifp; 2545 2546 ifp->if_oerrors++; 2547 if (sc->sf_link == 0) { 2548 if (bootverbose) 2549 if_printf(sc->sf_ifp, "watchdog timeout " 2550 "(missed link)\n"); 2551 } else 2552 if_printf(ifp, "watchdog timeout, %d Tx descs are active\n", 2553 sc->sf_cdata.sf_tx_cnt); 2554 2555 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 2556 sf_init_locked(sc); 2557 2558 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 2559 sf_start_locked(ifp); 2560} 2561 2562static int 2563sf_shutdown(device_t dev) 2564{ 2565 struct sf_softc *sc; 2566 2567 sc = device_get_softc(dev); 2568 2569 SF_LOCK(sc); 2570 sf_stop(sc); 2571 SF_UNLOCK(sc); 2572 2573 return (0); 2574} 2575 2576static int 2577sf_suspend(device_t dev) 2578{ 2579 struct sf_softc *sc; 2580 2581 sc = device_get_softc(dev); 2582 2583 SF_LOCK(sc); 2584 sf_stop(sc); 2585 sc->sf_suspended = 1; 2586 bus_generic_suspend(dev); 2587 SF_UNLOCK(sc); 2588 2589 return (0); 2590} 2591 2592static int 2593sf_resume(device_t dev) 2594{ 2595 struct sf_softc *sc; 2596 struct ifnet *ifp; 2597 2598 sc = device_get_softc(dev); 2599 2600 SF_LOCK(sc); 2601 bus_generic_resume(dev); 2602 ifp = sc->sf_ifp; 2603 if ((ifp->if_flags & IFF_UP) != 0) 2604 sf_init_locked(sc); 2605 2606 sc->sf_suspended = 0; 2607 SF_UNLOCK(sc); 2608 2609 return (0); 2610} 2611 2612static int 2613sf_sysctl_stats(SYSCTL_HANDLER_ARGS) 2614{ 2615 struct sf_softc *sc; 2616 struct sf_stats *stats; 2617 int error; 2618 int result; 2619 2620 result = -1; 2621 error = sysctl_handle_int(oidp, &result, 0, req); 2622 2623 if (error != 0 || req->newptr == NULL) 2624 return (error); 2625 2626 if (result != 1) 2627 return (error); 2628 2629 sc = (struct sf_softc *)arg1; 2630 stats = &sc->sf_statistics; 2631 2632 printf("%s statistics:\n", device_get_nameunit(sc->sf_dev)); 2633 printf("Transmit good frames : %ju\n", 2634 (uintmax_t)stats->sf_tx_frames); 2635 printf("Transmit good octets : %ju\n", 2636 (uintmax_t)stats->sf_tx_bytes); 2637 printf("Transmit single collisions : %u\n", 2638 stats->sf_tx_single_colls); 2639 printf("Transmit multiple collisions : %u\n", 2640 stats->sf_tx_multi_colls); 2641 printf("Transmit late collisions : %u\n", 2642 stats->sf_tx_late_colls); 2643 printf("Transmit abort due to excessive collisions : %u\n", 2644 stats->sf_tx_excess_colls); 2645 printf("Transmit CRC errors : %u\n", 2646 stats->sf_tx_crcerrs); 2647 printf("Transmit deferrals : %u\n", 2648 stats->sf_tx_deferred); 2649 printf("Transmit abort due to excessive deferrals : %u\n", 2650 stats->sf_tx_excess_defer); 2651 printf("Transmit pause control frames : %u\n", 2652 stats->sf_tx_pause_frames); 2653 printf("Transmit control frames : %u\n", 2654 stats->sf_tx_control_frames); 2655 printf("Transmit good multicast frames : %u\n", 2656 stats->sf_tx_mcast_frames); 2657 printf("Transmit good broadcast frames : %u\n", 2658 stats->sf_tx_bcast_frames); 2659 printf("Transmit frames lost due to internal transmit errors : %u\n", 2660 stats->sf_tx_frames_lost); 2661 printf("Transmit FIFO underflows : %u\n", 2662 stats->sf_tx_underruns); 2663 printf("Transmit GFP stalls : %u\n", stats->sf_tx_gfp_stall); 2664 printf("Receive good frames : %ju\n", 2665 (uint64_t)stats->sf_rx_frames); 2666 printf("Receive good octets : %ju\n", 2667 (uint64_t)stats->sf_rx_bytes); 2668 printf("Receive CRC errors : %u\n", 2669 stats->sf_rx_crcerrs); 2670 printf("Receive alignment errors : %u\n", 2671 stats->sf_rx_alignerrs); 2672 printf("Receive pause frames : %u\n", 2673 stats->sf_rx_pause_frames); 2674 printf("Receive control frames : %u\n", 2675 stats->sf_rx_control_frames); 2676 printf("Receive control frames with unsupported opcode : %u\n", 2677 stats->sf_rx_unsup_control_frames); 2678 printf("Receive frames too long : %u\n", 2679 stats->sf_rx_giants); 2680 printf("Receive frames too short : %u\n", 2681 stats->sf_rx_runts); 2682 printf("Receive frames jabber errors : %u\n", 2683 stats->sf_rx_jabbererrs); 2684 printf("Receive frames fragments : %u\n", 2685 stats->sf_rx_fragments); 2686 printf("Receive packets 64 bytes : %ju\n", 2687 (uint64_t)stats->sf_rx_pkts_64); 2688 printf("Receive packets 65 to 127 bytes : %ju\n", 2689 (uint64_t)stats->sf_rx_pkts_65_127); 2690 printf("Receive packets 128 to 255 bytes : %ju\n", 2691 (uint64_t)stats->sf_rx_pkts_128_255); 2692 printf("Receive packets 256 to 511 bytes : %ju\n", 2693 (uint64_t)stats->sf_rx_pkts_256_511); 2694 printf("Receive packets 512 to 1023 bytes : %ju\n", 2695 (uint64_t)stats->sf_rx_pkts_512_1023); 2696 printf("Receive packets 1024 to 1518 bytes : %ju\n", 2697 (uint64_t)stats->sf_rx_pkts_1024_1518); 2698 printf("Receive frames lost due to internal receive errors : %u\n", 2699 stats->sf_rx_frames_lost); 2700 printf("Receive GFP stalls : %u\n", stats->sf_rx_gfp_stall); 2701 2702 return (error); 2703} 2704 2705static int 2706sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high) 2707{ 2708 int error, value; 2709 2710 if (!arg1) 2711 return (EINVAL); 2712 value = *(int *)arg1; 2713 error = sysctl_handle_int(oidp, &value, 0, req); 2714 if (error || !req->newptr) 2715 return (error); 2716 if (value < low || value > high) 2717 return (EINVAL); 2718 *(int *)arg1 = value; 2719 2720 return (0); 2721} 2722 2723static int 2724sysctl_hw_sf_int_mod(SYSCTL_HANDLER_ARGS) 2725{ 2726 2727 return (sysctl_int_range(oidp, arg1, arg2, req, SF_IM_MIN, SF_IM_MAX)); 2728} 2729