1 /* $NetBSD: if_stge.c,v 1.32 2005/12/11 12:22:49 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Device driver for the Sundance Tech. TC9021 10/100/1000 34 * Ethernet controller. 35 */ 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #ifdef HAVE_KERNEL_OPTION_HEADERS 41 #include "opt_device_polling.h" 42 #endif 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/endian.h> 47 #include <sys/mbuf.h> 48 #include <sys/malloc.h> 49 #include <sys/kernel.h> 50 #include <sys/module.h> 51 #include <sys/socket.h> 52 #include <sys/sockio.h> 53 #include <sys/sysctl.h> 54 #include <sys/taskqueue.h> 55 56 #include <net/bpf.h> 57 #include <net/ethernet.h> 58 #include <net/if.h> 59 #include <net/if_var.h> 60 #include <net/if_dl.h> 61 #include <net/if_media.h> 62 #include <net/if_types.h> 63 #include <net/if_vlan_var.h> 64 65 #include <machine/bus.h> 66 #include <machine/resource.h> 67 #include <sys/bus.h> 68 #include <sys/rman.h> 69 70 #include <dev/mii/mii.h> 71 #include <dev/mii/mii_bitbang.h> 72 #include <dev/mii/miivar.h> 73 74 #include <dev/pci/pcireg.h> 75 #include <dev/pci/pcivar.h> 76 77 #include <dev/stge/if_stgereg.h> 78 79 #define STGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 80 81 MODULE_DEPEND(stge, pci, 1, 1, 1); 82 MODULE_DEPEND(stge, ether, 1, 1, 1); 83 MODULE_DEPEND(stge, miibus, 1, 1, 1); 84 85 /* "device miibus" required. See GENERIC if you get errors here. */ 86 #include "miibus_if.h" 87 88 /* 89 * Devices supported by this driver. 90 */ 91 static const struct stge_product { 92 uint16_t stge_vendorid; 93 uint16_t stge_deviceid; 94 const char *stge_name; 95 } stge_products[] = { 96 { VENDOR_SUNDANCETI, DEVICEID_SUNDANCETI_ST1023, 97 "Sundance ST-1023 Gigabit Ethernet" }, 98 99 { VENDOR_SUNDANCETI, DEVICEID_SUNDANCETI_ST2021, 100 "Sundance ST-2021 Gigabit Ethernet" }, 101 102 { VENDOR_TAMARACK, DEVICEID_TAMARACK_TC9021, 103 "Tamarack TC9021 Gigabit Ethernet" }, 104 105 { VENDOR_TAMARACK, DEVICEID_TAMARACK_TC9021_ALT, 106 "Tamarack TC9021 Gigabit Ethernet" }, 107 108 /* 109 * The Sundance sample boards use the Sundance vendor ID, 110 * but the Tamarack product ID. 111 */ 112 { VENDOR_SUNDANCETI, DEVICEID_TAMARACK_TC9021, 113 "Sundance TC9021 Gigabit Ethernet" }, 114 115 { VENDOR_SUNDANCETI, DEVICEID_TAMARACK_TC9021_ALT, 116 "Sundance TC9021 Gigabit Ethernet" }, 117 118 { VENDOR_DLINK, DEVICEID_DLINK_DL4000, 119 "D-Link DL-4000 Gigabit Ethernet" }, 120 121 { VENDOR_ANTARES, DEVICEID_ANTARES_TC9021, 122 "Antares Gigabit Ethernet" } 123 }; 124 125 static int stge_probe(device_t); 126 static int stge_attach(device_t); 127 static int stge_detach(device_t); 128 static int stge_shutdown(device_t); 129 static int stge_suspend(device_t); 130 static int stge_resume(device_t); 131 132 static int stge_encap(struct stge_softc *, struct mbuf **); 133 static void stge_start(struct ifnet *); 134 static void stge_start_locked(struct ifnet *); 135 static void stge_watchdog(struct stge_softc *); 136 static int stge_ioctl(struct ifnet *, u_long, caddr_t); 137 static void stge_init(void *); 138 static void stge_init_locked(struct stge_softc *); 139 static void stge_vlan_setup(struct stge_softc *); 140 static void stge_stop(struct stge_softc *); 141 static void stge_start_tx(struct stge_softc *); 142 static void stge_start_rx(struct stge_softc *); 143 static void stge_stop_tx(struct stge_softc *); 144 static void stge_stop_rx(struct stge_softc *); 145 146 static void stge_reset(struct stge_softc *, uint32_t); 147 static int stge_eeprom_wait(struct stge_softc *); 148 static void stge_read_eeprom(struct stge_softc *, int, uint16_t *); 149 static void stge_tick(void *); 150 static void stge_stats_update(struct stge_softc *); 151 static void stge_set_filter(struct stge_softc *); 152 static void stge_set_multi(struct stge_softc *); 153 154 static void stge_link_task(void *, int); 155 static void stge_intr(void *); 156 static __inline int stge_tx_error(struct stge_softc *); 157 static void stge_txeof(struct stge_softc *); 158 static int stge_rxeof(struct stge_softc *); 159 static __inline void stge_discard_rxbuf(struct stge_softc *, int); 160 static int stge_newbuf(struct stge_softc *, int); 161 #ifndef __NO_STRICT_ALIGNMENT 162 static __inline struct mbuf *stge_fixup_rx(struct stge_softc *, struct mbuf *); 163 #endif 164 165 static int stge_miibus_readreg(device_t, int, int); 166 static int stge_miibus_writereg(device_t, int, int, int); 167 static void stge_miibus_statchg(device_t); 168 static int stge_mediachange(struct ifnet *); 169 static void stge_mediastatus(struct ifnet *, struct ifmediareq *); 170 171 static void stge_dmamap_cb(void *, bus_dma_segment_t *, int, int); 172 static int stge_dma_alloc(struct stge_softc *); 173 static void stge_dma_free(struct stge_softc *); 174 static void stge_dma_wait(struct stge_softc *); 175 static void stge_init_tx_ring(struct stge_softc *); 176 static int stge_init_rx_ring(struct stge_softc *); 177 #ifdef DEVICE_POLLING 178 static int stge_poll(struct ifnet *, enum poll_cmd, int); 179 #endif 180 181 static void stge_setwol(struct stge_softc *); 182 static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int); 183 static int sysctl_hw_stge_rxint_nframe(SYSCTL_HANDLER_ARGS); 184 static int sysctl_hw_stge_rxint_dmawait(SYSCTL_HANDLER_ARGS); 185 186 /* 187 * MII bit-bang glue 188 */ 189 static uint32_t stge_mii_bitbang_read(device_t); 190 static void stge_mii_bitbang_write(device_t, uint32_t); 191 192 static const struct mii_bitbang_ops stge_mii_bitbang_ops = { 193 stge_mii_bitbang_read, 194 stge_mii_bitbang_write, 195 { 196 PC_MgmtData, /* MII_BIT_MDO */ 197 PC_MgmtData, /* MII_BIT_MDI */ 198 PC_MgmtClk, /* MII_BIT_MDC */ 199 PC_MgmtDir, /* MII_BIT_DIR_HOST_PHY */ 200 0, /* MII_BIT_DIR_PHY_HOST */ 201 } 202 }; 203 204 static device_method_t stge_methods[] = { 205 /* Device interface */ 206 DEVMETHOD(device_probe, stge_probe), 207 DEVMETHOD(device_attach, stge_attach), 208 DEVMETHOD(device_detach, stge_detach), 209 DEVMETHOD(device_shutdown, stge_shutdown), 210 DEVMETHOD(device_suspend, stge_suspend), 211 DEVMETHOD(device_resume, stge_resume), 212 213 /* MII interface */ 214 DEVMETHOD(miibus_readreg, stge_miibus_readreg), 215 DEVMETHOD(miibus_writereg, stge_miibus_writereg), 216 DEVMETHOD(miibus_statchg, stge_miibus_statchg), 217 218 DEVMETHOD_END 219 }; 220 221 static driver_t stge_driver = { 222 "stge", 223 stge_methods, 224 sizeof(struct stge_softc) 225 }; 226 227 static devclass_t stge_devclass; 228 229 DRIVER_MODULE(stge, pci, stge_driver, stge_devclass, 0, 0); 230 DRIVER_MODULE(miibus, stge, miibus_driver, miibus_devclass, 0, 0); 231 232 static struct resource_spec stge_res_spec_io[] = { 233 { SYS_RES_IOPORT, PCIR_BAR(0), RF_ACTIVE }, 234 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, 235 { -1, 0, 0 } 236 }; 237 238 static struct resource_spec stge_res_spec_mem[] = { 239 { SYS_RES_MEMORY, PCIR_BAR(1), RF_ACTIVE }, 240 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, 241 { -1, 0, 0 } 242 }; 243 244 /* 245 * stge_mii_bitbang_read: [mii bit-bang interface function] 246 * 247 * Read the MII serial port for the MII bit-bang module. 248 */ 249 static uint32_t 250 stge_mii_bitbang_read(device_t dev) 251 { 252 struct stge_softc *sc; 253 uint32_t val; 254 255 sc = device_get_softc(dev); 256 257 val = CSR_READ_1(sc, STGE_PhyCtrl); 258 CSR_BARRIER(sc, STGE_PhyCtrl, 1, 259 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 260 return (val); 261 } 262 263 /* 264 * stge_mii_bitbang_write: [mii big-bang interface function] 265 * 266 * Write the MII serial port for the MII bit-bang module. 267 */ 268 static void 269 stge_mii_bitbang_write(device_t dev, uint32_t val) 270 { 271 struct stge_softc *sc; 272 273 sc = device_get_softc(dev); 274 275 CSR_WRITE_1(sc, STGE_PhyCtrl, val); 276 CSR_BARRIER(sc, STGE_PhyCtrl, 1, 277 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 278 } 279 280 /* 281 * sc_miibus_readreg: [mii interface function] 282 * 283 * Read a PHY register on the MII of the TC9021. 284 */ 285 static int 286 stge_miibus_readreg(device_t dev, int phy, int reg) 287 { 288 struct stge_softc *sc; 289 int error, val; 290 291 sc = device_get_softc(dev); 292 293 if (reg == STGE_PhyCtrl) { 294 /* XXX allow ip1000phy read STGE_PhyCtrl register. */ 295 STGE_MII_LOCK(sc); 296 error = CSR_READ_1(sc, STGE_PhyCtrl); 297 STGE_MII_UNLOCK(sc); 298 return (error); 299 } 300 301 STGE_MII_LOCK(sc); 302 val = mii_bitbang_readreg(dev, &stge_mii_bitbang_ops, phy, reg); 303 STGE_MII_UNLOCK(sc); 304 return (val); 305 } 306 307 /* 308 * stge_miibus_writereg: [mii interface function] 309 * 310 * Write a PHY register on the MII of the TC9021. 311 */ 312 static int 313 stge_miibus_writereg(device_t dev, int phy, int reg, int val) 314 { 315 struct stge_softc *sc; 316 317 sc = device_get_softc(dev); 318 319 STGE_MII_LOCK(sc); 320 mii_bitbang_writereg(dev, &stge_mii_bitbang_ops, phy, reg, val); 321 STGE_MII_UNLOCK(sc); 322 return (0); 323 } 324 325 /* 326 * stge_miibus_statchg: [mii interface function] 327 * 328 * Callback from MII layer when media changes. 329 */ 330 static void 331 stge_miibus_statchg(device_t dev) 332 { 333 struct stge_softc *sc; 334 335 sc = device_get_softc(dev); 336 taskqueue_enqueue(taskqueue_swi, &sc->sc_link_task); 337 } 338 339 /* 340 * stge_mediastatus: [ifmedia interface function] 341 * 342 * Get the current interface media status. 343 */ 344 static void 345 stge_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 346 { 347 struct stge_softc *sc; 348 struct mii_data *mii; 349 350 sc = ifp->if_softc; 351 mii = device_get_softc(sc->sc_miibus); 352 353 mii_pollstat(mii); 354 ifmr->ifm_status = mii->mii_media_status; 355 ifmr->ifm_active = mii->mii_media_active; 356 } 357 358 /* 359 * stge_mediachange: [ifmedia interface function] 360 * 361 * Set hardware to newly-selected media. 362 */ 363 static int 364 stge_mediachange(struct ifnet *ifp) 365 { 366 struct stge_softc *sc; 367 struct mii_data *mii; 368 369 sc = ifp->if_softc; 370 mii = device_get_softc(sc->sc_miibus); 371 mii_mediachg(mii); 372 373 return (0); 374 } 375 376 static int 377 stge_eeprom_wait(struct stge_softc *sc) 378 { 379 int i; 380 381 for (i = 0; i < STGE_TIMEOUT; i++) { 382 DELAY(1000); 383 if ((CSR_READ_2(sc, STGE_EepromCtrl) & EC_EepromBusy) == 0) 384 return (0); 385 } 386 return (1); 387 } 388 389 /* 390 * stge_read_eeprom: 391 * 392 * Read data from the serial EEPROM. 393 */ 394 static void 395 stge_read_eeprom(struct stge_softc *sc, int offset, uint16_t *data) 396 { 397 398 if (stge_eeprom_wait(sc)) 399 device_printf(sc->sc_dev, "EEPROM failed to come ready\n"); 400 401 CSR_WRITE_2(sc, STGE_EepromCtrl, 402 EC_EepromAddress(offset) | EC_EepromOpcode(EC_OP_RR)); 403 if (stge_eeprom_wait(sc)) 404 device_printf(sc->sc_dev, "EEPROM read timed out\n"); 405 *data = CSR_READ_2(sc, STGE_EepromData); 406 } 407 408 409 static int 410 stge_probe(device_t dev) 411 { 412 const struct stge_product *sp; 413 int i; 414 uint16_t vendor, devid; 415 416 vendor = pci_get_vendor(dev); 417 devid = pci_get_device(dev); 418 sp = stge_products; 419 for (i = 0; i < sizeof(stge_products)/sizeof(stge_products[0]); 420 i++, sp++) { 421 if (vendor == sp->stge_vendorid && 422 devid == sp->stge_deviceid) { 423 device_set_desc(dev, sp->stge_name); 424 return (BUS_PROBE_DEFAULT); 425 } 426 } 427 428 return (ENXIO); 429 } 430 431 static int 432 stge_attach(device_t dev) 433 { 434 struct stge_softc *sc; 435 struct ifnet *ifp; 436 uint8_t enaddr[ETHER_ADDR_LEN]; 437 int error, flags, i; 438 uint16_t cmd; 439 uint32_t val; 440 441 error = 0; 442 sc = device_get_softc(dev); 443 sc->sc_dev = dev; 444 445 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 446 MTX_DEF); 447 mtx_init(&sc->sc_mii_mtx, "stge_mii_mutex", NULL, MTX_DEF); 448 callout_init_mtx(&sc->sc_tick_ch, &sc->sc_mtx, 0); 449 TASK_INIT(&sc->sc_link_task, 0, stge_link_task, sc); 450 451 /* 452 * Map the device. 453 */ 454 pci_enable_busmaster(dev); 455 cmd = pci_read_config(dev, PCIR_COMMAND, 2); 456 val = pci_read_config(dev, PCIR_BAR(1), 4); 457 if (PCI_BAR_IO(val)) 458 sc->sc_spec = stge_res_spec_mem; 459 else { 460 val = pci_read_config(dev, PCIR_BAR(0), 4); 461 if (!PCI_BAR_IO(val)) { 462 device_printf(sc->sc_dev, "couldn't locate IO BAR\n"); 463 error = ENXIO; 464 goto fail; 465 } 466 sc->sc_spec = stge_res_spec_io; 467 } 468 error = bus_alloc_resources(dev, sc->sc_spec, sc->sc_res); 469 if (error != 0) { 470 device_printf(dev, "couldn't allocate %s resources\n", 471 sc->sc_spec == stge_res_spec_mem ? "memory" : "I/O"); 472 goto fail; 473 } 474 sc->sc_rev = pci_get_revid(dev); 475 476 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 477 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 478 "rxint_nframe", CTLTYPE_INT|CTLFLAG_RW, &sc->sc_rxint_nframe, 0, 479 sysctl_hw_stge_rxint_nframe, "I", "stge rx interrupt nframe"); 480 481 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 482 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 483 "rxint_dmawait", CTLTYPE_INT|CTLFLAG_RW, &sc->sc_rxint_dmawait, 0, 484 sysctl_hw_stge_rxint_dmawait, "I", "stge rx interrupt dmawait"); 485 486 /* Pull in device tunables. */ 487 sc->sc_rxint_nframe = STGE_RXINT_NFRAME_DEFAULT; 488 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 489 "rxint_nframe", &sc->sc_rxint_nframe); 490 if (error == 0) { 491 if (sc->sc_rxint_nframe < STGE_RXINT_NFRAME_MIN || 492 sc->sc_rxint_nframe > STGE_RXINT_NFRAME_MAX) { 493 device_printf(dev, "rxint_nframe value out of range; " 494 "using default: %d\n", STGE_RXINT_NFRAME_DEFAULT); 495 sc->sc_rxint_nframe = STGE_RXINT_NFRAME_DEFAULT; 496 } 497 } 498 499 sc->sc_rxint_dmawait = STGE_RXINT_DMAWAIT_DEFAULT; 500 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 501 "rxint_dmawait", &sc->sc_rxint_dmawait); 502 if (error == 0) { 503 if (sc->sc_rxint_dmawait < STGE_RXINT_DMAWAIT_MIN || 504 sc->sc_rxint_dmawait > STGE_RXINT_DMAWAIT_MAX) { 505 device_printf(dev, "rxint_dmawait value out of range; " 506 "using default: %d\n", STGE_RXINT_DMAWAIT_DEFAULT); 507 sc->sc_rxint_dmawait = STGE_RXINT_DMAWAIT_DEFAULT; 508 } 509 } 510 511 if ((error = stge_dma_alloc(sc) != 0)) 512 goto fail; 513 514 /* 515 * Determine if we're copper or fiber. It affects how we 516 * reset the card. 517 */ 518 if (CSR_READ_4(sc, STGE_AsicCtrl) & AC_PhyMedia) 519 sc->sc_usefiber = 1; 520 else 521 sc->sc_usefiber = 0; 522 523 /* Load LED configuration from EEPROM. */ 524 stge_read_eeprom(sc, STGE_EEPROM_LEDMode, &sc->sc_led); 525 526 /* 527 * Reset the chip to a known state. 528 */ 529 STGE_LOCK(sc); 530 stge_reset(sc, STGE_RESET_FULL); 531 STGE_UNLOCK(sc); 532 533 /* 534 * Reading the station address from the EEPROM doesn't seem 535 * to work, at least on my sample boards. Instead, since 536 * the reset sequence does AutoInit, read it from the station 537 * address registers. For Sundance 1023 you can only read it 538 * from EEPROM. 539 */ 540 if (pci_get_device(dev) != DEVICEID_SUNDANCETI_ST1023) { 541 uint16_t v; 542 543 v = CSR_READ_2(sc, STGE_StationAddress0); 544 enaddr[0] = v & 0xff; 545 enaddr[1] = v >> 8; 546 v = CSR_READ_2(sc, STGE_StationAddress1); 547 enaddr[2] = v & 0xff; 548 enaddr[3] = v >> 8; 549 v = CSR_READ_2(sc, STGE_StationAddress2); 550 enaddr[4] = v & 0xff; 551 enaddr[5] = v >> 8; 552 sc->sc_stge1023 = 0; 553 } else { 554 uint16_t myaddr[ETHER_ADDR_LEN / 2]; 555 for (i = 0; i <ETHER_ADDR_LEN / 2; i++) { 556 stge_read_eeprom(sc, STGE_EEPROM_StationAddress0 + i, 557 &myaddr[i]); 558 myaddr[i] = le16toh(myaddr[i]); 559 } 560 bcopy(myaddr, enaddr, sizeof(enaddr)); 561 sc->sc_stge1023 = 1; 562 } 563 564 ifp = sc->sc_ifp = if_alloc(IFT_ETHER); 565 if (ifp == NULL) { 566 device_printf(sc->sc_dev, "failed to if_alloc()\n"); 567 error = ENXIO; 568 goto fail; 569 } 570 571 ifp->if_softc = sc; 572 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 573 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 574 ifp->if_ioctl = stge_ioctl; 575 ifp->if_start = stge_start; 576 ifp->if_init = stge_init; 577 ifp->if_snd.ifq_drv_maxlen = STGE_TX_RING_CNT - 1; 578 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen); 579 IFQ_SET_READY(&ifp->if_snd); 580 /* Revision B3 and earlier chips have checksum bug. */ 581 if (sc->sc_rev >= 0x0c) { 582 ifp->if_hwassist = STGE_CSUM_FEATURES; 583 ifp->if_capabilities = IFCAP_HWCSUM; 584 } else { 585 ifp->if_hwassist = 0; 586 ifp->if_capabilities = 0; 587 } 588 ifp->if_capabilities |= IFCAP_WOL_MAGIC; 589 ifp->if_capenable = ifp->if_capabilities; 590 591 /* 592 * Read some important bits from the PhyCtrl register. 593 */ 594 sc->sc_PhyCtrl = CSR_READ_1(sc, STGE_PhyCtrl) & 595 (PC_PhyDuplexPolarity | PC_PhyLnkPolarity); 596 597 /* Set up MII bus. */ 598 flags = MIIF_DOPAUSE; 599 if (sc->sc_rev >= 0x40 && sc->sc_rev <= 0x4e) 600 flags |= MIIF_MACPRIV0; 601 error = mii_attach(sc->sc_dev, &sc->sc_miibus, ifp, stge_mediachange, 602 stge_mediastatus, BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 603 flags); 604 if (error != 0) { 605 device_printf(sc->sc_dev, "attaching PHYs failed\n"); 606 goto fail; 607 } 608 609 ether_ifattach(ifp, enaddr); 610 611 /* VLAN capability setup */ 612 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING; 613 if (sc->sc_rev >= 0x0c) 614 ifp->if_capabilities |= IFCAP_VLAN_HWCSUM; 615 ifp->if_capenable = ifp->if_capabilities; 616 #ifdef DEVICE_POLLING 617 ifp->if_capabilities |= IFCAP_POLLING; 618 #endif 619 /* 620 * Tell the upper layer(s) we support long frames. 621 * Must appear after the call to ether_ifattach() because 622 * ether_ifattach() sets ifi_hdrlen to the default value. 623 */ 624 ifp->if_hdrlen = sizeof(struct ether_vlan_header); 625 626 /* 627 * The manual recommends disabling early transmit, so we 628 * do. It's disabled anyway, if using IP checksumming, 629 * since the entire packet must be in the FIFO in order 630 * for the chip to perform the checksum. 631 */ 632 sc->sc_txthresh = 0x0fff; 633 634 /* 635 * Disable MWI if the PCI layer tells us to. 636 */ 637 sc->sc_DMACtrl = 0; 638 if ((cmd & PCIM_CMD_MWRICEN) == 0) 639 sc->sc_DMACtrl |= DMAC_MWIDisable; 640 641 /* 642 * Hookup IRQ 643 */ 644 error = bus_setup_intr(dev, sc->sc_res[1], INTR_TYPE_NET | INTR_MPSAFE, 645 NULL, stge_intr, sc, &sc->sc_ih); 646 if (error != 0) { 647 ether_ifdetach(ifp); 648 device_printf(sc->sc_dev, "couldn't set up IRQ\n"); 649 sc->sc_ifp = NULL; 650 goto fail; 651 } 652 653 fail: 654 if (error != 0) 655 stge_detach(dev); 656 657 return (error); 658 } 659 660 static int 661 stge_detach(device_t dev) 662 { 663 struct stge_softc *sc; 664 struct ifnet *ifp; 665 666 sc = device_get_softc(dev); 667 668 ifp = sc->sc_ifp; 669 #ifdef DEVICE_POLLING 670 if (ifp && ifp->if_capenable & IFCAP_POLLING) 671 ether_poll_deregister(ifp); 672 #endif 673 if (device_is_attached(dev)) { 674 STGE_LOCK(sc); 675 /* XXX */ 676 sc->sc_detach = 1; 677 stge_stop(sc); 678 STGE_UNLOCK(sc); 679 callout_drain(&sc->sc_tick_ch); 680 taskqueue_drain(taskqueue_swi, &sc->sc_link_task); 681 ether_ifdetach(ifp); 682 } 683 684 if (sc->sc_miibus != NULL) { 685 device_delete_child(dev, sc->sc_miibus); 686 sc->sc_miibus = NULL; 687 } 688 bus_generic_detach(dev); 689 stge_dma_free(sc); 690 691 if (ifp != NULL) { 692 if_free(ifp); 693 sc->sc_ifp = NULL; 694 } 695 696 if (sc->sc_ih) { 697 bus_teardown_intr(dev, sc->sc_res[1], sc->sc_ih); 698 sc->sc_ih = NULL; 699 } 700 bus_release_resources(dev, sc->sc_spec, sc->sc_res); 701 702 mtx_destroy(&sc->sc_mii_mtx); 703 mtx_destroy(&sc->sc_mtx); 704 705 return (0); 706 } 707 708 struct stge_dmamap_arg { 709 bus_addr_t stge_busaddr; 710 }; 711 712 static void 713 stge_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 714 { 715 struct stge_dmamap_arg *ctx; 716 717 if (error != 0) 718 return; 719 720 ctx = (struct stge_dmamap_arg *)arg; 721 ctx->stge_busaddr = segs[0].ds_addr; 722 } 723 724 static int 725 stge_dma_alloc(struct stge_softc *sc) 726 { 727 struct stge_dmamap_arg ctx; 728 struct stge_txdesc *txd; 729 struct stge_rxdesc *rxd; 730 int error, i; 731 732 /* create parent tag. */ 733 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev),/* parent */ 734 1, 0, /* algnmnt, boundary */ 735 STGE_DMA_MAXADDR, /* lowaddr */ 736 BUS_SPACE_MAXADDR, /* highaddr */ 737 NULL, NULL, /* filter, filterarg */ 738 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 739 0, /* nsegments */ 740 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 741 0, /* flags */ 742 NULL, NULL, /* lockfunc, lockarg */ 743 &sc->sc_cdata.stge_parent_tag); 744 if (error != 0) { 745 device_printf(sc->sc_dev, "failed to create parent DMA tag\n"); 746 goto fail; 747 } 748 /* create tag for Tx ring. */ 749 error = bus_dma_tag_create(sc->sc_cdata.stge_parent_tag,/* parent */ 750 STGE_RING_ALIGN, 0, /* algnmnt, boundary */ 751 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 752 BUS_SPACE_MAXADDR, /* highaddr */ 753 NULL, NULL, /* filter, filterarg */ 754 STGE_TX_RING_SZ, /* maxsize */ 755 1, /* nsegments */ 756 STGE_TX_RING_SZ, /* maxsegsize */ 757 0, /* flags */ 758 NULL, NULL, /* lockfunc, lockarg */ 759 &sc->sc_cdata.stge_tx_ring_tag); 760 if (error != 0) { 761 device_printf(sc->sc_dev, 762 "failed to allocate Tx ring DMA tag\n"); 763 goto fail; 764 } 765 766 /* create tag for Rx ring. */ 767 error = bus_dma_tag_create(sc->sc_cdata.stge_parent_tag,/* parent */ 768 STGE_RING_ALIGN, 0, /* algnmnt, boundary */ 769 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 770 BUS_SPACE_MAXADDR, /* highaddr */ 771 NULL, NULL, /* filter, filterarg */ 772 STGE_RX_RING_SZ, /* maxsize */ 773 1, /* nsegments */ 774 STGE_RX_RING_SZ, /* maxsegsize */ 775 0, /* flags */ 776 NULL, NULL, /* lockfunc, lockarg */ 777 &sc->sc_cdata.stge_rx_ring_tag); 778 if (error != 0) { 779 device_printf(sc->sc_dev, 780 "failed to allocate Rx ring DMA tag\n"); 781 goto fail; 782 } 783 784 /* create tag for Tx buffers. */ 785 error = bus_dma_tag_create(sc->sc_cdata.stge_parent_tag,/* parent */ 786 1, 0, /* algnmnt, boundary */ 787 BUS_SPACE_MAXADDR, /* lowaddr */ 788 BUS_SPACE_MAXADDR, /* highaddr */ 789 NULL, NULL, /* filter, filterarg */ 790 MCLBYTES * STGE_MAXTXSEGS, /* maxsize */ 791 STGE_MAXTXSEGS, /* nsegments */ 792 MCLBYTES, /* maxsegsize */ 793 0, /* flags */ 794 NULL, NULL, /* lockfunc, lockarg */ 795 &sc->sc_cdata.stge_tx_tag); 796 if (error != 0) { 797 device_printf(sc->sc_dev, "failed to allocate Tx DMA tag\n"); 798 goto fail; 799 } 800 801 /* create tag for Rx buffers. */ 802 error = bus_dma_tag_create(sc->sc_cdata.stge_parent_tag,/* parent */ 803 1, 0, /* algnmnt, boundary */ 804 BUS_SPACE_MAXADDR, /* lowaddr */ 805 BUS_SPACE_MAXADDR, /* highaddr */ 806 NULL, NULL, /* filter, filterarg */ 807 MCLBYTES, /* maxsize */ 808 1, /* nsegments */ 809 MCLBYTES, /* maxsegsize */ 810 0, /* flags */ 811 NULL, NULL, /* lockfunc, lockarg */ 812 &sc->sc_cdata.stge_rx_tag); 813 if (error != 0) { 814 device_printf(sc->sc_dev, "failed to allocate Rx DMA tag\n"); 815 goto fail; 816 } 817 818 /* allocate DMA'able memory and load the DMA map for Tx ring. */ 819 error = bus_dmamem_alloc(sc->sc_cdata.stge_tx_ring_tag, 820 (void **)&sc->sc_rdata.stge_tx_ring, BUS_DMA_NOWAIT | 821 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->sc_cdata.stge_tx_ring_map); 822 if (error != 0) { 823 device_printf(sc->sc_dev, 824 "failed to allocate DMA'able memory for Tx ring\n"); 825 goto fail; 826 } 827 828 ctx.stge_busaddr = 0; 829 error = bus_dmamap_load(sc->sc_cdata.stge_tx_ring_tag, 830 sc->sc_cdata.stge_tx_ring_map, sc->sc_rdata.stge_tx_ring, 831 STGE_TX_RING_SZ, stge_dmamap_cb, &ctx, BUS_DMA_NOWAIT); 832 if (error != 0 || ctx.stge_busaddr == 0) { 833 device_printf(sc->sc_dev, 834 "failed to load DMA'able memory for Tx ring\n"); 835 goto fail; 836 } 837 sc->sc_rdata.stge_tx_ring_paddr = ctx.stge_busaddr; 838 839 /* allocate DMA'able memory and load the DMA map for Rx ring. */ 840 error = bus_dmamem_alloc(sc->sc_cdata.stge_rx_ring_tag, 841 (void **)&sc->sc_rdata.stge_rx_ring, BUS_DMA_NOWAIT | 842 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->sc_cdata.stge_rx_ring_map); 843 if (error != 0) { 844 device_printf(sc->sc_dev, 845 "failed to allocate DMA'able memory for Rx ring\n"); 846 goto fail; 847 } 848 849 ctx.stge_busaddr = 0; 850 error = bus_dmamap_load(sc->sc_cdata.stge_rx_ring_tag, 851 sc->sc_cdata.stge_rx_ring_map, sc->sc_rdata.stge_rx_ring, 852 STGE_RX_RING_SZ, stge_dmamap_cb, &ctx, BUS_DMA_NOWAIT); 853 if (error != 0 || ctx.stge_busaddr == 0) { 854 device_printf(sc->sc_dev, 855 "failed to load DMA'able memory for Rx ring\n"); 856 goto fail; 857 } 858 sc->sc_rdata.stge_rx_ring_paddr = ctx.stge_busaddr; 859 860 /* create DMA maps for Tx buffers. */ 861 for (i = 0; i < STGE_TX_RING_CNT; i++) { 862 txd = &sc->sc_cdata.stge_txdesc[i]; 863 txd->tx_m = NULL; 864 txd->tx_dmamap = 0; 865 error = bus_dmamap_create(sc->sc_cdata.stge_tx_tag, 0, 866 &txd->tx_dmamap); 867 if (error != 0) { 868 device_printf(sc->sc_dev, 869 "failed to create Tx dmamap\n"); 870 goto fail; 871 } 872 } 873 /* create DMA maps for Rx buffers. */ 874 if ((error = bus_dmamap_create(sc->sc_cdata.stge_rx_tag, 0, 875 &sc->sc_cdata.stge_rx_sparemap)) != 0) { 876 device_printf(sc->sc_dev, "failed to create spare Rx dmamap\n"); 877 goto fail; 878 } 879 for (i = 0; i < STGE_RX_RING_CNT; i++) { 880 rxd = &sc->sc_cdata.stge_rxdesc[i]; 881 rxd->rx_m = NULL; 882 rxd->rx_dmamap = 0; 883 error = bus_dmamap_create(sc->sc_cdata.stge_rx_tag, 0, 884 &rxd->rx_dmamap); 885 if (error != 0) { 886 device_printf(sc->sc_dev, 887 "failed to create Rx dmamap\n"); 888 goto fail; 889 } 890 } 891 892 fail: 893 return (error); 894 } 895 896 static void 897 stge_dma_free(struct stge_softc *sc) 898 { 899 struct stge_txdesc *txd; 900 struct stge_rxdesc *rxd; 901 int i; 902 903 /* Tx ring */ 904 if (sc->sc_cdata.stge_tx_ring_tag) { 905 if (sc->sc_rdata.stge_tx_ring_paddr) 906 bus_dmamap_unload(sc->sc_cdata.stge_tx_ring_tag, 907 sc->sc_cdata.stge_tx_ring_map); 908 if (sc->sc_rdata.stge_tx_ring) 909 bus_dmamem_free(sc->sc_cdata.stge_tx_ring_tag, 910 sc->sc_rdata.stge_tx_ring, 911 sc->sc_cdata.stge_tx_ring_map); 912 sc->sc_rdata.stge_tx_ring = NULL; 913 sc->sc_rdata.stge_tx_ring_paddr = 0; 914 bus_dma_tag_destroy(sc->sc_cdata.stge_tx_ring_tag); 915 sc->sc_cdata.stge_tx_ring_tag = NULL; 916 } 917 /* Rx ring */ 918 if (sc->sc_cdata.stge_rx_ring_tag) { 919 if (sc->sc_rdata.stge_rx_ring_paddr) 920 bus_dmamap_unload(sc->sc_cdata.stge_rx_ring_tag, 921 sc->sc_cdata.stge_rx_ring_map); 922 if (sc->sc_rdata.stge_rx_ring) 923 bus_dmamem_free(sc->sc_cdata.stge_rx_ring_tag, 924 sc->sc_rdata.stge_rx_ring, 925 sc->sc_cdata.stge_rx_ring_map); 926 sc->sc_rdata.stge_rx_ring = NULL; 927 sc->sc_rdata.stge_rx_ring_paddr = 0; 928 bus_dma_tag_destroy(sc->sc_cdata.stge_rx_ring_tag); 929 sc->sc_cdata.stge_rx_ring_tag = NULL; 930 } 931 /* Tx buffers */ 932 if (sc->sc_cdata.stge_tx_tag) { 933 for (i = 0; i < STGE_TX_RING_CNT; i++) { 934 txd = &sc->sc_cdata.stge_txdesc[i]; 935 if (txd->tx_dmamap) { 936 bus_dmamap_destroy(sc->sc_cdata.stge_tx_tag, 937 txd->tx_dmamap); 938 txd->tx_dmamap = 0; 939 } 940 } 941 bus_dma_tag_destroy(sc->sc_cdata.stge_tx_tag); 942 sc->sc_cdata.stge_tx_tag = NULL; 943 } 944 /* Rx buffers */ 945 if (sc->sc_cdata.stge_rx_tag) { 946 for (i = 0; i < STGE_RX_RING_CNT; i++) { 947 rxd = &sc->sc_cdata.stge_rxdesc[i]; 948 if (rxd->rx_dmamap) { 949 bus_dmamap_destroy(sc->sc_cdata.stge_rx_tag, 950 rxd->rx_dmamap); 951 rxd->rx_dmamap = 0; 952 } 953 } 954 if (sc->sc_cdata.stge_rx_sparemap) { 955 bus_dmamap_destroy(sc->sc_cdata.stge_rx_tag, 956 sc->sc_cdata.stge_rx_sparemap); 957 sc->sc_cdata.stge_rx_sparemap = 0; 958 } 959 bus_dma_tag_destroy(sc->sc_cdata.stge_rx_tag); 960 sc->sc_cdata.stge_rx_tag = NULL; 961 } 962 963 if (sc->sc_cdata.stge_parent_tag) { 964 bus_dma_tag_destroy(sc->sc_cdata.stge_parent_tag); 965 sc->sc_cdata.stge_parent_tag = NULL; 966 } 967 } 968 969 /* 970 * stge_shutdown: 971 * 972 * Make sure the interface is stopped at reboot time. 973 */ 974 static int 975 stge_shutdown(device_t dev) 976 { 977 978 return (stge_suspend(dev)); 979 } 980 981 static void 982 stge_setwol(struct stge_softc *sc) 983 { 984 struct ifnet *ifp; 985 uint8_t v; 986 987 STGE_LOCK_ASSERT(sc); 988 989 ifp = sc->sc_ifp; 990 v = CSR_READ_1(sc, STGE_WakeEvent); 991 /* Disable all WOL bits. */ 992 v &= ~(WE_WakePktEnable | WE_MagicPktEnable | WE_LinkEventEnable | 993 WE_WakeOnLanEnable); 994 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0) 995 v |= WE_MagicPktEnable | WE_WakeOnLanEnable; 996 CSR_WRITE_1(sc, STGE_WakeEvent, v); 997 /* Reset Tx and prevent transmission. */ 998 CSR_WRITE_4(sc, STGE_AsicCtrl, 999 CSR_READ_4(sc, STGE_AsicCtrl) | AC_TxReset); 1000 /* 1001 * TC9021 automatically reset link speed to 100Mbps when it's put 1002 * into sleep so there is no need to try to resetting link speed. 1003 */ 1004 } 1005 1006 static int 1007 stge_suspend(device_t dev) 1008 { 1009 struct stge_softc *sc; 1010 1011 sc = device_get_softc(dev); 1012 1013 STGE_LOCK(sc); 1014 stge_stop(sc); 1015 sc->sc_suspended = 1; 1016 stge_setwol(sc); 1017 STGE_UNLOCK(sc); 1018 1019 return (0); 1020 } 1021 1022 static int 1023 stge_resume(device_t dev) 1024 { 1025 struct stge_softc *sc; 1026 struct ifnet *ifp; 1027 uint8_t v; 1028 1029 sc = device_get_softc(dev); 1030 1031 STGE_LOCK(sc); 1032 /* 1033 * Clear WOL bits, so special frames wouldn't interfere 1034 * normal Rx operation anymore. 1035 */ 1036 v = CSR_READ_1(sc, STGE_WakeEvent); 1037 v &= ~(WE_WakePktEnable | WE_MagicPktEnable | WE_LinkEventEnable | 1038 WE_WakeOnLanEnable); 1039 CSR_WRITE_1(sc, STGE_WakeEvent, v); 1040 ifp = sc->sc_ifp; 1041 if (ifp->if_flags & IFF_UP) 1042 stge_init_locked(sc); 1043 1044 sc->sc_suspended = 0; 1045 STGE_UNLOCK(sc); 1046 1047 return (0); 1048 } 1049 1050 static void 1051 stge_dma_wait(struct stge_softc *sc) 1052 { 1053 int i; 1054 1055 for (i = 0; i < STGE_TIMEOUT; i++) { 1056 DELAY(2); 1057 if ((CSR_READ_4(sc, STGE_DMACtrl) & DMAC_TxDMAInProg) == 0) 1058 break; 1059 } 1060 1061 if (i == STGE_TIMEOUT) 1062 device_printf(sc->sc_dev, "DMA wait timed out\n"); 1063 } 1064 1065 static int 1066 stge_encap(struct stge_softc *sc, struct mbuf **m_head) 1067 { 1068 struct stge_txdesc *txd; 1069 struct stge_tfd *tfd; 1070 struct mbuf *m; 1071 bus_dma_segment_t txsegs[STGE_MAXTXSEGS]; 1072 int error, i, nsegs, si; 1073 uint64_t csum_flags, tfc; 1074 1075 STGE_LOCK_ASSERT(sc); 1076 1077 if ((txd = STAILQ_FIRST(&sc->sc_cdata.stge_txfreeq)) == NULL) 1078 return (ENOBUFS); 1079 1080 error = bus_dmamap_load_mbuf_sg(sc->sc_cdata.stge_tx_tag, 1081 txd->tx_dmamap, *m_head, txsegs, &nsegs, 0); 1082 if (error == EFBIG) { 1083 m = m_collapse(*m_head, M_NOWAIT, STGE_MAXTXSEGS); 1084 if (m == NULL) { 1085 m_freem(*m_head); 1086 *m_head = NULL; 1087 return (ENOMEM); 1088 } 1089 *m_head = m; 1090 error = bus_dmamap_load_mbuf_sg(sc->sc_cdata.stge_tx_tag, 1091 txd->tx_dmamap, *m_head, txsegs, &nsegs, 0); 1092 if (error != 0) { 1093 m_freem(*m_head); 1094 *m_head = NULL; 1095 return (error); 1096 } 1097 } else if (error != 0) 1098 return (error); 1099 if (nsegs == 0) { 1100 m_freem(*m_head); 1101 *m_head = NULL; 1102 return (EIO); 1103 } 1104 1105 m = *m_head; 1106 csum_flags = 0; 1107 if ((m->m_pkthdr.csum_flags & STGE_CSUM_FEATURES) != 0) { 1108 if (m->m_pkthdr.csum_flags & CSUM_IP) 1109 csum_flags |= TFD_IPChecksumEnable; 1110 if (m->m_pkthdr.csum_flags & CSUM_TCP) 1111 csum_flags |= TFD_TCPChecksumEnable; 1112 else if (m->m_pkthdr.csum_flags & CSUM_UDP) 1113 csum_flags |= TFD_UDPChecksumEnable; 1114 } 1115 1116 si = sc->sc_cdata.stge_tx_prod; 1117 tfd = &sc->sc_rdata.stge_tx_ring[si]; 1118 for (i = 0; i < nsegs; i++) 1119 tfd->tfd_frags[i].frag_word0 = 1120 htole64(FRAG_ADDR(txsegs[i].ds_addr) | 1121 FRAG_LEN(txsegs[i].ds_len)); 1122 sc->sc_cdata.stge_tx_cnt++; 1123 1124 tfc = TFD_FrameId(si) | TFD_WordAlign(TFD_WordAlign_disable) | 1125 TFD_FragCount(nsegs) | csum_flags; 1126 if (sc->sc_cdata.stge_tx_cnt >= STGE_TX_HIWAT) 1127 tfc |= TFD_TxDMAIndicate; 1128 1129 /* Update producer index. */ 1130 sc->sc_cdata.stge_tx_prod = (si + 1) % STGE_TX_RING_CNT; 1131 1132 /* Check if we have a VLAN tag to insert. */ 1133 if (m->m_flags & M_VLANTAG) 1134 tfc |= (TFD_VLANTagInsert | TFD_VID(m->m_pkthdr.ether_vtag)); 1135 tfd->tfd_control = htole64(tfc); 1136 1137 /* Update Tx Queue. */ 1138 STAILQ_REMOVE_HEAD(&sc->sc_cdata.stge_txfreeq, tx_q); 1139 STAILQ_INSERT_TAIL(&sc->sc_cdata.stge_txbusyq, txd, tx_q); 1140 txd->tx_m = m; 1141 1142 /* Sync descriptors. */ 1143 bus_dmamap_sync(sc->sc_cdata.stge_tx_tag, txd->tx_dmamap, 1144 BUS_DMASYNC_PREWRITE); 1145 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag, 1146 sc->sc_cdata.stge_tx_ring_map, 1147 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1148 1149 return (0); 1150 } 1151 1152 /* 1153 * stge_start: [ifnet interface function] 1154 * 1155 * Start packet transmission on the interface. 1156 */ 1157 static void 1158 stge_start(struct ifnet *ifp) 1159 { 1160 struct stge_softc *sc; 1161 1162 sc = ifp->if_softc; 1163 STGE_LOCK(sc); 1164 stge_start_locked(ifp); 1165 STGE_UNLOCK(sc); 1166 } 1167 1168 static void 1169 stge_start_locked(struct ifnet *ifp) 1170 { 1171 struct stge_softc *sc; 1172 struct mbuf *m_head; 1173 int enq; 1174 1175 sc = ifp->if_softc; 1176 1177 STGE_LOCK_ASSERT(sc); 1178 1179 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) != 1180 IFF_DRV_RUNNING || sc->sc_link == 0) 1181 return; 1182 1183 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) { 1184 if (sc->sc_cdata.stge_tx_cnt >= STGE_TX_HIWAT) { 1185 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1186 break; 1187 } 1188 1189 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1190 if (m_head == NULL) 1191 break; 1192 /* 1193 * Pack the data into the transmit ring. If we 1194 * don't have room, set the OACTIVE flag and wait 1195 * for the NIC to drain the ring. 1196 */ 1197 if (stge_encap(sc, &m_head)) { 1198 if (m_head == NULL) 1199 break; 1200 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1201 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1202 break; 1203 } 1204 1205 enq++; 1206 /* 1207 * If there's a BPF listener, bounce a copy of this frame 1208 * to him. 1209 */ 1210 ETHER_BPF_MTAP(ifp, m_head); 1211 } 1212 1213 if (enq > 0) { 1214 /* Transmit */ 1215 CSR_WRITE_4(sc, STGE_DMACtrl, DMAC_TxDMAPollNow); 1216 1217 /* Set a timeout in case the chip goes out to lunch. */ 1218 sc->sc_watchdog_timer = 5; 1219 } 1220 } 1221 1222 /* 1223 * stge_watchdog: 1224 * 1225 * Watchdog timer handler. 1226 */ 1227 static void 1228 stge_watchdog(struct stge_softc *sc) 1229 { 1230 struct ifnet *ifp; 1231 1232 STGE_LOCK_ASSERT(sc); 1233 1234 if (sc->sc_watchdog_timer == 0 || --sc->sc_watchdog_timer) 1235 return; 1236 1237 ifp = sc->sc_ifp; 1238 if_printf(sc->sc_ifp, "device timeout\n"); 1239 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1240 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1241 stge_init_locked(sc); 1242 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1243 stge_start_locked(ifp); 1244 } 1245 1246 /* 1247 * stge_ioctl: [ifnet interface function] 1248 * 1249 * Handle control requests from the operator. 1250 */ 1251 static int 1252 stge_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1253 { 1254 struct stge_softc *sc; 1255 struct ifreq *ifr; 1256 struct mii_data *mii; 1257 int error, mask; 1258 1259 sc = ifp->if_softc; 1260 ifr = (struct ifreq *)data; 1261 error = 0; 1262 switch (cmd) { 1263 case SIOCSIFMTU: 1264 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > STGE_JUMBO_MTU) 1265 error = EINVAL; 1266 else if (ifp->if_mtu != ifr->ifr_mtu) { 1267 ifp->if_mtu = ifr->ifr_mtu; 1268 STGE_LOCK(sc); 1269 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 1270 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1271 stge_init_locked(sc); 1272 } 1273 STGE_UNLOCK(sc); 1274 } 1275 break; 1276 case SIOCSIFFLAGS: 1277 STGE_LOCK(sc); 1278 if ((ifp->if_flags & IFF_UP) != 0) { 1279 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 1280 if (((ifp->if_flags ^ sc->sc_if_flags) 1281 & IFF_PROMISC) != 0) 1282 stge_set_filter(sc); 1283 } else { 1284 if (sc->sc_detach == 0) 1285 stge_init_locked(sc); 1286 } 1287 } else { 1288 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 1289 stge_stop(sc); 1290 } 1291 sc->sc_if_flags = ifp->if_flags; 1292 STGE_UNLOCK(sc); 1293 break; 1294 case SIOCADDMULTI: 1295 case SIOCDELMULTI: 1296 STGE_LOCK(sc); 1297 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 1298 stge_set_multi(sc); 1299 STGE_UNLOCK(sc); 1300 break; 1301 case SIOCSIFMEDIA: 1302 case SIOCGIFMEDIA: 1303 mii = device_get_softc(sc->sc_miibus); 1304 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd); 1305 break; 1306 case SIOCSIFCAP: 1307 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 1308 #ifdef DEVICE_POLLING 1309 if ((mask & IFCAP_POLLING) != 0) { 1310 if ((ifr->ifr_reqcap & IFCAP_POLLING) != 0) { 1311 error = ether_poll_register(stge_poll, ifp); 1312 if (error != 0) 1313 break; 1314 STGE_LOCK(sc); 1315 CSR_WRITE_2(sc, STGE_IntEnable, 0); 1316 ifp->if_capenable |= IFCAP_POLLING; 1317 STGE_UNLOCK(sc); 1318 } else { 1319 error = ether_poll_deregister(ifp); 1320 if (error != 0) 1321 break; 1322 STGE_LOCK(sc); 1323 CSR_WRITE_2(sc, STGE_IntEnable, 1324 sc->sc_IntEnable); 1325 ifp->if_capenable &= ~IFCAP_POLLING; 1326 STGE_UNLOCK(sc); 1327 } 1328 } 1329 #endif 1330 if ((mask & IFCAP_HWCSUM) != 0) { 1331 ifp->if_capenable ^= IFCAP_HWCSUM; 1332 if ((IFCAP_HWCSUM & ifp->if_capenable) != 0 && 1333 (IFCAP_HWCSUM & ifp->if_capabilities) != 0) 1334 ifp->if_hwassist = STGE_CSUM_FEATURES; 1335 else 1336 ifp->if_hwassist = 0; 1337 } 1338 if ((mask & IFCAP_WOL) != 0 && 1339 (ifp->if_capabilities & IFCAP_WOL) != 0) { 1340 if ((mask & IFCAP_WOL_MAGIC) != 0) 1341 ifp->if_capenable ^= IFCAP_WOL_MAGIC; 1342 } 1343 if ((mask & IFCAP_VLAN_HWTAGGING) != 0) { 1344 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; 1345 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 1346 STGE_LOCK(sc); 1347 stge_vlan_setup(sc); 1348 STGE_UNLOCK(sc); 1349 } 1350 } 1351 VLAN_CAPABILITIES(ifp); 1352 break; 1353 default: 1354 error = ether_ioctl(ifp, cmd, data); 1355 break; 1356 } 1357 1358 return (error); 1359 } 1360 1361 static void 1362 stge_link_task(void *arg, int pending) 1363 { 1364 struct stge_softc *sc; 1365 struct mii_data *mii; 1366 uint32_t v, ac; 1367 int i; 1368 1369 sc = (struct stge_softc *)arg; 1370 STGE_LOCK(sc); 1371 1372 mii = device_get_softc(sc->sc_miibus); 1373 if (mii->mii_media_status & IFM_ACTIVE) { 1374 if (IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) 1375 sc->sc_link = 1; 1376 } else 1377 sc->sc_link = 0; 1378 1379 sc->sc_MACCtrl = 0; 1380 if (((mii->mii_media_active & IFM_GMASK) & IFM_FDX) != 0) 1381 sc->sc_MACCtrl |= MC_DuplexSelect; 1382 if (((mii->mii_media_active & IFM_GMASK) & IFM_ETH_RXPAUSE) != 0) 1383 sc->sc_MACCtrl |= MC_RxFlowControlEnable; 1384 if (((mii->mii_media_active & IFM_GMASK) & IFM_ETH_TXPAUSE) != 0) 1385 sc->sc_MACCtrl |= MC_TxFlowControlEnable; 1386 /* 1387 * Update STGE_MACCtrl register depending on link status. 1388 * (duplex, flow control etc) 1389 */ 1390 v = ac = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 1391 v &= ~(MC_DuplexSelect|MC_RxFlowControlEnable|MC_TxFlowControlEnable); 1392 v |= sc->sc_MACCtrl; 1393 CSR_WRITE_4(sc, STGE_MACCtrl, v); 1394 if (((ac ^ sc->sc_MACCtrl) & MC_DuplexSelect) != 0) { 1395 /* Duplex setting changed, reset Tx/Rx functions. */ 1396 ac = CSR_READ_4(sc, STGE_AsicCtrl); 1397 ac |= AC_TxReset | AC_RxReset; 1398 CSR_WRITE_4(sc, STGE_AsicCtrl, ac); 1399 for (i = 0; i < STGE_TIMEOUT; i++) { 1400 DELAY(100); 1401 if ((CSR_READ_4(sc, STGE_AsicCtrl) & AC_ResetBusy) == 0) 1402 break; 1403 } 1404 if (i == STGE_TIMEOUT) 1405 device_printf(sc->sc_dev, "reset failed to complete\n"); 1406 } 1407 STGE_UNLOCK(sc); 1408 } 1409 1410 static __inline int 1411 stge_tx_error(struct stge_softc *sc) 1412 { 1413 uint32_t txstat; 1414 int error; 1415 1416 for (error = 0;;) { 1417 txstat = CSR_READ_4(sc, STGE_TxStatus); 1418 if ((txstat & TS_TxComplete) == 0) 1419 break; 1420 /* Tx underrun */ 1421 if ((txstat & TS_TxUnderrun) != 0) { 1422 /* 1423 * XXX 1424 * There should be a more better way to recover 1425 * from Tx underrun instead of a full reset. 1426 */ 1427 if (sc->sc_nerr++ < STGE_MAXERR) 1428 device_printf(sc->sc_dev, "Tx underrun, " 1429 "resetting...\n"); 1430 if (sc->sc_nerr == STGE_MAXERR) 1431 device_printf(sc->sc_dev, "too many errors; " 1432 "not reporting any more\n"); 1433 error = -1; 1434 break; 1435 } 1436 /* Maximum/Late collisions, Re-enable Tx MAC. */ 1437 if ((txstat & (TS_MaxCollisions|TS_LateCollision)) != 0) 1438 CSR_WRITE_4(sc, STGE_MACCtrl, 1439 (CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK) | 1440 MC_TxEnable); 1441 } 1442 1443 return (error); 1444 } 1445 1446 /* 1447 * stge_intr: 1448 * 1449 * Interrupt service routine. 1450 */ 1451 static void 1452 stge_intr(void *arg) 1453 { 1454 struct stge_softc *sc; 1455 struct ifnet *ifp; 1456 int reinit; 1457 uint16_t status; 1458 1459 sc = (struct stge_softc *)arg; 1460 ifp = sc->sc_ifp; 1461 1462 STGE_LOCK(sc); 1463 1464 #ifdef DEVICE_POLLING 1465 if ((ifp->if_capenable & IFCAP_POLLING) != 0) 1466 goto done_locked; 1467 #endif 1468 status = CSR_READ_2(sc, STGE_IntStatus); 1469 if (sc->sc_suspended || (status & IS_InterruptStatus) == 0) 1470 goto done_locked; 1471 1472 /* Disable interrupts. */ 1473 for (reinit = 0;;) { 1474 status = CSR_READ_2(sc, STGE_IntStatusAck); 1475 status &= sc->sc_IntEnable; 1476 if (status == 0) 1477 break; 1478 /* Host interface errors. */ 1479 if ((status & IS_HostError) != 0) { 1480 device_printf(sc->sc_dev, 1481 "Host interface error, resetting...\n"); 1482 reinit = 1; 1483 goto force_init; 1484 } 1485 1486 /* Receive interrupts. */ 1487 if ((status & IS_RxDMAComplete) != 0) { 1488 stge_rxeof(sc); 1489 if ((status & IS_RFDListEnd) != 0) 1490 CSR_WRITE_4(sc, STGE_DMACtrl, 1491 DMAC_RxDMAPollNow); 1492 } 1493 1494 /* Transmit interrupts. */ 1495 if ((status & (IS_TxDMAComplete | IS_TxComplete)) != 0) 1496 stge_txeof(sc); 1497 1498 /* Transmission errors.*/ 1499 if ((status & IS_TxComplete) != 0) { 1500 if ((reinit = stge_tx_error(sc)) != 0) 1501 break; 1502 } 1503 } 1504 1505 force_init: 1506 if (reinit != 0) { 1507 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1508 stge_init_locked(sc); 1509 } 1510 1511 /* Re-enable interrupts. */ 1512 CSR_WRITE_2(sc, STGE_IntEnable, sc->sc_IntEnable); 1513 1514 /* Try to get more packets going. */ 1515 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1516 stge_start_locked(ifp); 1517 1518 done_locked: 1519 STGE_UNLOCK(sc); 1520 } 1521 1522 /* 1523 * stge_txeof: 1524 * 1525 * Helper; handle transmit interrupts. 1526 */ 1527 static void 1528 stge_txeof(struct stge_softc *sc) 1529 { 1530 struct ifnet *ifp; 1531 struct stge_txdesc *txd; 1532 uint64_t control; 1533 int cons; 1534 1535 STGE_LOCK_ASSERT(sc); 1536 1537 ifp = sc->sc_ifp; 1538 1539 txd = STAILQ_FIRST(&sc->sc_cdata.stge_txbusyq); 1540 if (txd == NULL) 1541 return; 1542 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag, 1543 sc->sc_cdata.stge_tx_ring_map, BUS_DMASYNC_POSTREAD); 1544 1545 /* 1546 * Go through our Tx list and free mbufs for those 1547 * frames which have been transmitted. 1548 */ 1549 for (cons = sc->sc_cdata.stge_tx_cons;; 1550 cons = (cons + 1) % STGE_TX_RING_CNT) { 1551 if (sc->sc_cdata.stge_tx_cnt <= 0) 1552 break; 1553 control = le64toh(sc->sc_rdata.stge_tx_ring[cons].tfd_control); 1554 if ((control & TFD_TFDDone) == 0) 1555 break; 1556 sc->sc_cdata.stge_tx_cnt--; 1557 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1558 1559 bus_dmamap_sync(sc->sc_cdata.stge_tx_tag, txd->tx_dmamap, 1560 BUS_DMASYNC_POSTWRITE); 1561 bus_dmamap_unload(sc->sc_cdata.stge_tx_tag, txd->tx_dmamap); 1562 1563 /* Output counter is updated with statistics register */ 1564 m_freem(txd->tx_m); 1565 txd->tx_m = NULL; 1566 STAILQ_REMOVE_HEAD(&sc->sc_cdata.stge_txbusyq, tx_q); 1567 STAILQ_INSERT_TAIL(&sc->sc_cdata.stge_txfreeq, txd, tx_q); 1568 txd = STAILQ_FIRST(&sc->sc_cdata.stge_txbusyq); 1569 } 1570 sc->sc_cdata.stge_tx_cons = cons; 1571 if (sc->sc_cdata.stge_tx_cnt == 0) 1572 sc->sc_watchdog_timer = 0; 1573 1574 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag, 1575 sc->sc_cdata.stge_tx_ring_map, 1576 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1577 } 1578 1579 static __inline void 1580 stge_discard_rxbuf(struct stge_softc *sc, int idx) 1581 { 1582 struct stge_rfd *rfd; 1583 1584 rfd = &sc->sc_rdata.stge_rx_ring[idx]; 1585 rfd->rfd_status = 0; 1586 } 1587 1588 #ifndef __NO_STRICT_ALIGNMENT 1589 /* 1590 * It seems that TC9021's DMA engine has alignment restrictions in 1591 * DMA scatter operations. The first DMA segment has no address 1592 * alignment restrictins but the rest should be aligned on 4(?) bytes 1593 * boundary. Otherwise it would corrupt random memory. Since we don't 1594 * know which one is used for the first segment in advance we simply 1595 * don't align at all. 1596 * To avoid copying over an entire frame to align, we allocate a new 1597 * mbuf and copy ethernet header to the new mbuf. The new mbuf is 1598 * prepended into the existing mbuf chain. 1599 */ 1600 static __inline struct mbuf * 1601 stge_fixup_rx(struct stge_softc *sc, struct mbuf *m) 1602 { 1603 struct mbuf *n; 1604 1605 n = NULL; 1606 if (m->m_len <= (MCLBYTES - ETHER_HDR_LEN)) { 1607 bcopy(m->m_data, m->m_data + ETHER_HDR_LEN, m->m_len); 1608 m->m_data += ETHER_HDR_LEN; 1609 n = m; 1610 } else { 1611 MGETHDR(n, M_NOWAIT, MT_DATA); 1612 if (n != NULL) { 1613 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN); 1614 m->m_data += ETHER_HDR_LEN; 1615 m->m_len -= ETHER_HDR_LEN; 1616 n->m_len = ETHER_HDR_LEN; 1617 M_MOVE_PKTHDR(n, m); 1618 n->m_next = m; 1619 } else 1620 m_freem(m); 1621 } 1622 1623 return (n); 1624 } 1625 #endif 1626 1627 /* 1628 * stge_rxeof: 1629 * 1630 * Helper; handle receive interrupts. 1631 */ 1632 static int 1633 stge_rxeof(struct stge_softc *sc) 1634 { 1635 struct ifnet *ifp; 1636 struct stge_rxdesc *rxd; 1637 struct mbuf *mp, *m; 1638 uint64_t status64; 1639 uint32_t status; 1640 int cons, prog, rx_npkts; 1641 1642 STGE_LOCK_ASSERT(sc); 1643 1644 rx_npkts = 0; 1645 ifp = sc->sc_ifp; 1646 1647 bus_dmamap_sync(sc->sc_cdata.stge_rx_ring_tag, 1648 sc->sc_cdata.stge_rx_ring_map, BUS_DMASYNC_POSTREAD); 1649 1650 prog = 0; 1651 for (cons = sc->sc_cdata.stge_rx_cons; prog < STGE_RX_RING_CNT; 1652 prog++, cons = (cons + 1) % STGE_RX_RING_CNT) { 1653 status64 = le64toh(sc->sc_rdata.stge_rx_ring[cons].rfd_status); 1654 status = RFD_RxStatus(status64); 1655 if ((status & RFD_RFDDone) == 0) 1656 break; 1657 #ifdef DEVICE_POLLING 1658 if (ifp->if_capenable & IFCAP_POLLING) { 1659 if (sc->sc_cdata.stge_rxcycles <= 0) 1660 break; 1661 sc->sc_cdata.stge_rxcycles--; 1662 } 1663 #endif 1664 prog++; 1665 rxd = &sc->sc_cdata.stge_rxdesc[cons]; 1666 mp = rxd->rx_m; 1667 1668 /* 1669 * If the packet had an error, drop it. Note we count 1670 * the error later in the periodic stats update. 1671 */ 1672 if ((status & RFD_FrameEnd) != 0 && (status & 1673 (RFD_RxFIFOOverrun | RFD_RxRuntFrame | 1674 RFD_RxAlignmentError | RFD_RxFCSError | 1675 RFD_RxLengthError)) != 0) { 1676 stge_discard_rxbuf(sc, cons); 1677 if (sc->sc_cdata.stge_rxhead != NULL) { 1678 m_freem(sc->sc_cdata.stge_rxhead); 1679 STGE_RXCHAIN_RESET(sc); 1680 } 1681 continue; 1682 } 1683 /* 1684 * Add a new receive buffer to the ring. 1685 */ 1686 if (stge_newbuf(sc, cons) != 0) { 1687 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 1688 stge_discard_rxbuf(sc, cons); 1689 if (sc->sc_cdata.stge_rxhead != NULL) { 1690 m_freem(sc->sc_cdata.stge_rxhead); 1691 STGE_RXCHAIN_RESET(sc); 1692 } 1693 continue; 1694 } 1695 1696 if ((status & RFD_FrameEnd) != 0) 1697 mp->m_len = RFD_RxDMAFrameLen(status) - 1698 sc->sc_cdata.stge_rxlen; 1699 sc->sc_cdata.stge_rxlen += mp->m_len; 1700 1701 /* Chain mbufs. */ 1702 if (sc->sc_cdata.stge_rxhead == NULL) { 1703 sc->sc_cdata.stge_rxhead = mp; 1704 sc->sc_cdata.stge_rxtail = mp; 1705 } else { 1706 mp->m_flags &= ~M_PKTHDR; 1707 sc->sc_cdata.stge_rxtail->m_next = mp; 1708 sc->sc_cdata.stge_rxtail = mp; 1709 } 1710 1711 if ((status & RFD_FrameEnd) != 0) { 1712 m = sc->sc_cdata.stge_rxhead; 1713 m->m_pkthdr.rcvif = ifp; 1714 m->m_pkthdr.len = sc->sc_cdata.stge_rxlen; 1715 1716 if (m->m_pkthdr.len > sc->sc_if_framesize) { 1717 m_freem(m); 1718 STGE_RXCHAIN_RESET(sc); 1719 continue; 1720 } 1721 /* 1722 * Set the incoming checksum information for 1723 * the packet. 1724 */ 1725 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) { 1726 if ((status & RFD_IPDetected) != 0) { 1727 m->m_pkthdr.csum_flags |= 1728 CSUM_IP_CHECKED; 1729 if ((status & RFD_IPError) == 0) 1730 m->m_pkthdr.csum_flags |= 1731 CSUM_IP_VALID; 1732 } 1733 if (((status & RFD_TCPDetected) != 0 && 1734 (status & RFD_TCPError) == 0) || 1735 ((status & RFD_UDPDetected) != 0 && 1736 (status & RFD_UDPError) == 0)) { 1737 m->m_pkthdr.csum_flags |= 1738 (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); 1739 m->m_pkthdr.csum_data = 0xffff; 1740 } 1741 } 1742 1743 #ifndef __NO_STRICT_ALIGNMENT 1744 if (sc->sc_if_framesize > (MCLBYTES - ETHER_ALIGN)) { 1745 if ((m = stge_fixup_rx(sc, m)) == NULL) { 1746 STGE_RXCHAIN_RESET(sc); 1747 continue; 1748 } 1749 } 1750 #endif 1751 /* Check for VLAN tagged packets. */ 1752 if ((status & RFD_VLANDetected) != 0 && 1753 (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0) { 1754 m->m_pkthdr.ether_vtag = RFD_TCI(status64); 1755 m->m_flags |= M_VLANTAG; 1756 } 1757 1758 STGE_UNLOCK(sc); 1759 /* Pass it on. */ 1760 (*ifp->if_input)(ifp, m); 1761 STGE_LOCK(sc); 1762 rx_npkts++; 1763 1764 STGE_RXCHAIN_RESET(sc); 1765 } 1766 } 1767 1768 if (prog > 0) { 1769 /* Update the consumer index. */ 1770 sc->sc_cdata.stge_rx_cons = cons; 1771 bus_dmamap_sync(sc->sc_cdata.stge_rx_ring_tag, 1772 sc->sc_cdata.stge_rx_ring_map, 1773 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1774 } 1775 return (rx_npkts); 1776 } 1777 1778 #ifdef DEVICE_POLLING 1779 static int 1780 stge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1781 { 1782 struct stge_softc *sc; 1783 uint16_t status; 1784 int rx_npkts; 1785 1786 rx_npkts = 0; 1787 sc = ifp->if_softc; 1788 STGE_LOCK(sc); 1789 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1790 STGE_UNLOCK(sc); 1791 return (rx_npkts); 1792 } 1793 1794 sc->sc_cdata.stge_rxcycles = count; 1795 rx_npkts = stge_rxeof(sc); 1796 stge_txeof(sc); 1797 1798 if (cmd == POLL_AND_CHECK_STATUS) { 1799 status = CSR_READ_2(sc, STGE_IntStatus); 1800 status &= sc->sc_IntEnable; 1801 if (status != 0) { 1802 if ((status & IS_HostError) != 0) { 1803 device_printf(sc->sc_dev, 1804 "Host interface error, resetting...\n"); 1805 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1806 stge_init_locked(sc); 1807 } 1808 if ((status & IS_TxComplete) != 0) { 1809 if (stge_tx_error(sc) != 0) { 1810 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1811 stge_init_locked(sc); 1812 } 1813 } 1814 } 1815 1816 } 1817 1818 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1819 stge_start_locked(ifp); 1820 1821 STGE_UNLOCK(sc); 1822 return (rx_npkts); 1823 } 1824 #endif /* DEVICE_POLLING */ 1825 1826 /* 1827 * stge_tick: 1828 * 1829 * One second timer, used to tick the MII. 1830 */ 1831 static void 1832 stge_tick(void *arg) 1833 { 1834 struct stge_softc *sc; 1835 struct mii_data *mii; 1836 1837 sc = (struct stge_softc *)arg; 1838 1839 STGE_LOCK_ASSERT(sc); 1840 1841 mii = device_get_softc(sc->sc_miibus); 1842 mii_tick(mii); 1843 1844 /* Update statistics counters. */ 1845 stge_stats_update(sc); 1846 1847 /* 1848 * Relcaim any pending Tx descriptors to release mbufs in a 1849 * timely manner as we don't generate Tx completion interrupts 1850 * for every frame. This limits the delay to a maximum of one 1851 * second. 1852 */ 1853 if (sc->sc_cdata.stge_tx_cnt != 0) 1854 stge_txeof(sc); 1855 1856 stge_watchdog(sc); 1857 1858 callout_reset(&sc->sc_tick_ch, hz, stge_tick, sc); 1859 } 1860 1861 /* 1862 * stge_stats_update: 1863 * 1864 * Read the TC9021 statistics counters. 1865 */ 1866 static void 1867 stge_stats_update(struct stge_softc *sc) 1868 { 1869 struct ifnet *ifp; 1870 1871 STGE_LOCK_ASSERT(sc); 1872 1873 ifp = sc->sc_ifp; 1874 1875 CSR_READ_4(sc,STGE_OctetRcvOk); 1876 1877 if_inc_counter(ifp, IFCOUNTER_IPACKETS, CSR_READ_4(sc, STGE_FramesRcvdOk)); 1878 1879 if_inc_counter(ifp, IFCOUNTER_IERRORS, CSR_READ_2(sc, STGE_FramesLostRxErrors)); 1880 1881 CSR_READ_4(sc, STGE_OctetXmtdOk); 1882 1883 if_inc_counter(ifp, IFCOUNTER_OPACKETS, CSR_READ_4(sc, STGE_FramesXmtdOk)); 1884 1885 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1886 CSR_READ_4(sc, STGE_LateCollisions) + 1887 CSR_READ_4(sc, STGE_MultiColFrames) + 1888 CSR_READ_4(sc, STGE_SingleColFrames)); 1889 1890 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1891 CSR_READ_2(sc, STGE_FramesAbortXSColls) + 1892 CSR_READ_2(sc, STGE_FramesWEXDeferal)); 1893 } 1894 1895 /* 1896 * stge_reset: 1897 * 1898 * Perform a soft reset on the TC9021. 1899 */ 1900 static void 1901 stge_reset(struct stge_softc *sc, uint32_t how) 1902 { 1903 uint32_t ac; 1904 uint8_t v; 1905 int i, dv; 1906 1907 STGE_LOCK_ASSERT(sc); 1908 1909 dv = 5000; 1910 ac = CSR_READ_4(sc, STGE_AsicCtrl); 1911 switch (how) { 1912 case STGE_RESET_TX: 1913 ac |= AC_TxReset | AC_FIFO; 1914 dv = 100; 1915 break; 1916 case STGE_RESET_RX: 1917 ac |= AC_RxReset | AC_FIFO; 1918 dv = 100; 1919 break; 1920 case STGE_RESET_FULL: 1921 default: 1922 /* 1923 * Only assert RstOut if we're fiber. We need GMII clocks 1924 * to be present in order for the reset to complete on fiber 1925 * cards. 1926 */ 1927 ac |= AC_GlobalReset | AC_RxReset | AC_TxReset | 1928 AC_DMA | AC_FIFO | AC_Network | AC_Host | AC_AutoInit | 1929 (sc->sc_usefiber ? AC_RstOut : 0); 1930 break; 1931 } 1932 1933 CSR_WRITE_4(sc, STGE_AsicCtrl, ac); 1934 1935 /* Account for reset problem at 10Mbps. */ 1936 DELAY(dv); 1937 1938 for (i = 0; i < STGE_TIMEOUT; i++) { 1939 if ((CSR_READ_4(sc, STGE_AsicCtrl) & AC_ResetBusy) == 0) 1940 break; 1941 DELAY(dv); 1942 } 1943 1944 if (i == STGE_TIMEOUT) 1945 device_printf(sc->sc_dev, "reset failed to complete\n"); 1946 1947 /* Set LED, from Linux IPG driver. */ 1948 ac = CSR_READ_4(sc, STGE_AsicCtrl); 1949 ac &= ~(AC_LEDMode | AC_LEDSpeed | AC_LEDModeBit1); 1950 if ((sc->sc_led & 0x01) != 0) 1951 ac |= AC_LEDMode; 1952 if ((sc->sc_led & 0x03) != 0) 1953 ac |= AC_LEDModeBit1; 1954 if ((sc->sc_led & 0x08) != 0) 1955 ac |= AC_LEDSpeed; 1956 CSR_WRITE_4(sc, STGE_AsicCtrl, ac); 1957 1958 /* Set PHY, from Linux IPG driver */ 1959 v = CSR_READ_1(sc, STGE_PhySet); 1960 v &= ~(PS_MemLenb9b | PS_MemLen | PS_NonCompdet); 1961 v |= ((sc->sc_led & 0x70) >> 4); 1962 CSR_WRITE_1(sc, STGE_PhySet, v); 1963 } 1964 1965 /* 1966 * stge_init: [ ifnet interface function ] 1967 * 1968 * Initialize the interface. 1969 */ 1970 static void 1971 stge_init(void *xsc) 1972 { 1973 struct stge_softc *sc; 1974 1975 sc = (struct stge_softc *)xsc; 1976 STGE_LOCK(sc); 1977 stge_init_locked(sc); 1978 STGE_UNLOCK(sc); 1979 } 1980 1981 static void 1982 stge_init_locked(struct stge_softc *sc) 1983 { 1984 struct ifnet *ifp; 1985 struct mii_data *mii; 1986 uint16_t eaddr[3]; 1987 uint32_t v; 1988 int error; 1989 1990 STGE_LOCK_ASSERT(sc); 1991 1992 ifp = sc->sc_ifp; 1993 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 1994 return; 1995 mii = device_get_softc(sc->sc_miibus); 1996 1997 /* 1998 * Cancel any pending I/O. 1999 */ 2000 stge_stop(sc); 2001 2002 /* 2003 * Reset the chip to a known state. 2004 */ 2005 stge_reset(sc, STGE_RESET_FULL); 2006 2007 /* Init descriptors. */ 2008 error = stge_init_rx_ring(sc); 2009 if (error != 0) { 2010 device_printf(sc->sc_dev, 2011 "initialization failed: no memory for rx buffers\n"); 2012 stge_stop(sc); 2013 goto out; 2014 } 2015 stge_init_tx_ring(sc); 2016 2017 /* Set the station address. */ 2018 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN); 2019 CSR_WRITE_2(sc, STGE_StationAddress0, htole16(eaddr[0])); 2020 CSR_WRITE_2(sc, STGE_StationAddress1, htole16(eaddr[1])); 2021 CSR_WRITE_2(sc, STGE_StationAddress2, htole16(eaddr[2])); 2022 2023 /* 2024 * Set the statistics masks. Disable all the RMON stats, 2025 * and disable selected stats in the non-RMON stats registers. 2026 */ 2027 CSR_WRITE_4(sc, STGE_RMONStatisticsMask, 0xffffffff); 2028 CSR_WRITE_4(sc, STGE_StatisticsMask, 2029 (1U << 1) | (1U << 2) | (1U << 3) | (1U << 4) | (1U << 5) | 2030 (1U << 6) | (1U << 7) | (1U << 8) | (1U << 9) | (1U << 10) | 2031 (1U << 13) | (1U << 14) | (1U << 15) | (1U << 19) | (1U << 20) | 2032 (1U << 21)); 2033 2034 /* Set up the receive filter. */ 2035 stge_set_filter(sc); 2036 /* Program multicast filter. */ 2037 stge_set_multi(sc); 2038 2039 /* 2040 * Give the transmit and receive ring to the chip. 2041 */ 2042 CSR_WRITE_4(sc, STGE_TFDListPtrHi, 2043 STGE_ADDR_HI(STGE_TX_RING_ADDR(sc, 0))); 2044 CSR_WRITE_4(sc, STGE_TFDListPtrLo, 2045 STGE_ADDR_LO(STGE_TX_RING_ADDR(sc, 0))); 2046 2047 CSR_WRITE_4(sc, STGE_RFDListPtrHi, 2048 STGE_ADDR_HI(STGE_RX_RING_ADDR(sc, 0))); 2049 CSR_WRITE_4(sc, STGE_RFDListPtrLo, 2050 STGE_ADDR_LO(STGE_RX_RING_ADDR(sc, 0))); 2051 2052 /* 2053 * Initialize the Tx auto-poll period. It's OK to make this number 2054 * large (255 is the max, but we use 127) -- we explicitly kick the 2055 * transmit engine when there's actually a packet. 2056 */ 2057 CSR_WRITE_1(sc, STGE_TxDMAPollPeriod, 127); 2058 2059 /* ..and the Rx auto-poll period. */ 2060 CSR_WRITE_1(sc, STGE_RxDMAPollPeriod, 1); 2061 2062 /* Initialize the Tx start threshold. */ 2063 CSR_WRITE_2(sc, STGE_TxStartThresh, sc->sc_txthresh); 2064 2065 /* Rx DMA thresholds, from Linux */ 2066 CSR_WRITE_1(sc, STGE_RxDMABurstThresh, 0x30); 2067 CSR_WRITE_1(sc, STGE_RxDMAUrgentThresh, 0x30); 2068 2069 /* Rx early threhold, from Linux */ 2070 CSR_WRITE_2(sc, STGE_RxEarlyThresh, 0x7ff); 2071 2072 /* Tx DMA thresholds, from Linux */ 2073 CSR_WRITE_1(sc, STGE_TxDMABurstThresh, 0x30); 2074 CSR_WRITE_1(sc, STGE_TxDMAUrgentThresh, 0x04); 2075 2076 /* 2077 * Initialize the Rx DMA interrupt control register. We 2078 * request an interrupt after every incoming packet, but 2079 * defer it for sc_rxint_dmawait us. When the number of 2080 * interrupts pending reaches STGE_RXINT_NFRAME, we stop 2081 * deferring the interrupt, and signal it immediately. 2082 */ 2083 CSR_WRITE_4(sc, STGE_RxDMAIntCtrl, 2084 RDIC_RxFrameCount(sc->sc_rxint_nframe) | 2085 RDIC_RxDMAWaitTime(STGE_RXINT_USECS2TICK(sc->sc_rxint_dmawait))); 2086 2087 /* 2088 * Initialize the interrupt mask. 2089 */ 2090 sc->sc_IntEnable = IS_HostError | IS_TxComplete | 2091 IS_TxDMAComplete | IS_RxDMAComplete | IS_RFDListEnd; 2092 #ifdef DEVICE_POLLING 2093 /* Disable interrupts if we are polling. */ 2094 if ((ifp->if_capenable & IFCAP_POLLING) != 0) 2095 CSR_WRITE_2(sc, STGE_IntEnable, 0); 2096 else 2097 #endif 2098 CSR_WRITE_2(sc, STGE_IntEnable, sc->sc_IntEnable); 2099 2100 /* 2101 * Configure the DMA engine. 2102 * XXX Should auto-tune TxBurstLimit. 2103 */ 2104 CSR_WRITE_4(sc, STGE_DMACtrl, sc->sc_DMACtrl | DMAC_TxBurstLimit(3)); 2105 2106 /* 2107 * Send a PAUSE frame when we reach 29,696 bytes in the Rx 2108 * FIFO, and send an un-PAUSE frame when we reach 3056 bytes 2109 * in the Rx FIFO. 2110 */ 2111 CSR_WRITE_2(sc, STGE_FlowOnTresh, 29696 / 16); 2112 CSR_WRITE_2(sc, STGE_FlowOffThresh, 3056 / 16); 2113 2114 /* 2115 * Set the maximum frame size. 2116 */ 2117 sc->sc_if_framesize = ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; 2118 CSR_WRITE_2(sc, STGE_MaxFrameSize, sc->sc_if_framesize); 2119 2120 /* 2121 * Initialize MacCtrl -- do it before setting the media, 2122 * as setting the media will actually program the register. 2123 * 2124 * Note: We have to poke the IFS value before poking 2125 * anything else. 2126 */ 2127 /* Tx/Rx MAC should be disabled before programming IFS.*/ 2128 CSR_WRITE_4(sc, STGE_MACCtrl, MC_IFSSelect(MC_IFS96bit)); 2129 2130 stge_vlan_setup(sc); 2131 2132 if (sc->sc_rev >= 6) { /* >= B.2 */ 2133 /* Multi-frag frame bug work-around. */ 2134 CSR_WRITE_2(sc, STGE_DebugCtrl, 2135 CSR_READ_2(sc, STGE_DebugCtrl) | 0x0200); 2136 2137 /* Tx Poll Now bug work-around. */ 2138 CSR_WRITE_2(sc, STGE_DebugCtrl, 2139 CSR_READ_2(sc, STGE_DebugCtrl) | 0x0010); 2140 /* Tx Poll Now bug work-around. */ 2141 CSR_WRITE_2(sc, STGE_DebugCtrl, 2142 CSR_READ_2(sc, STGE_DebugCtrl) | 0x0020); 2143 } 2144 2145 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2146 v |= MC_StatisticsEnable | MC_TxEnable | MC_RxEnable; 2147 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2148 /* 2149 * It seems that transmitting frames without checking the state of 2150 * Rx/Tx MAC wedge the hardware. 2151 */ 2152 stge_start_tx(sc); 2153 stge_start_rx(sc); 2154 2155 sc->sc_link = 0; 2156 /* 2157 * Set the current media. 2158 */ 2159 mii_mediachg(mii); 2160 2161 /* 2162 * Start the one second MII clock. 2163 */ 2164 callout_reset(&sc->sc_tick_ch, hz, stge_tick, sc); 2165 2166 /* 2167 * ...all done! 2168 */ 2169 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2170 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2171 2172 out: 2173 if (error != 0) 2174 device_printf(sc->sc_dev, "interface not running\n"); 2175 } 2176 2177 static void 2178 stge_vlan_setup(struct stge_softc *sc) 2179 { 2180 struct ifnet *ifp; 2181 uint32_t v; 2182 2183 ifp = sc->sc_ifp; 2184 /* 2185 * The NIC always copy a VLAN tag regardless of STGE_MACCtrl 2186 * MC_AutoVLANuntagging bit. 2187 * MC_AutoVLANtagging bit selects which VLAN source to use 2188 * between STGE_VLANTag and TFC. However TFC TFD_VLANTagInsert 2189 * bit has priority over MC_AutoVLANtagging bit. So we always 2190 * use TFC instead of STGE_VLANTag register. 2191 */ 2192 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2193 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0) 2194 v |= MC_AutoVLANuntagging; 2195 else 2196 v &= ~MC_AutoVLANuntagging; 2197 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2198 } 2199 2200 /* 2201 * Stop transmission on the interface. 2202 */ 2203 static void 2204 stge_stop(struct stge_softc *sc) 2205 { 2206 struct ifnet *ifp; 2207 struct stge_txdesc *txd; 2208 struct stge_rxdesc *rxd; 2209 uint32_t v; 2210 int i; 2211 2212 STGE_LOCK_ASSERT(sc); 2213 /* 2214 * Stop the one second clock. 2215 */ 2216 callout_stop(&sc->sc_tick_ch); 2217 sc->sc_watchdog_timer = 0; 2218 2219 /* 2220 * Disable interrupts. 2221 */ 2222 CSR_WRITE_2(sc, STGE_IntEnable, 0); 2223 2224 /* 2225 * Stop receiver, transmitter, and stats update. 2226 */ 2227 stge_stop_rx(sc); 2228 stge_stop_tx(sc); 2229 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2230 v |= MC_StatisticsDisable; 2231 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2232 2233 /* 2234 * Stop the transmit and receive DMA. 2235 */ 2236 stge_dma_wait(sc); 2237 CSR_WRITE_4(sc, STGE_TFDListPtrHi, 0); 2238 CSR_WRITE_4(sc, STGE_TFDListPtrLo, 0); 2239 CSR_WRITE_4(sc, STGE_RFDListPtrHi, 0); 2240 CSR_WRITE_4(sc, STGE_RFDListPtrLo, 0); 2241 2242 /* 2243 * Free RX and TX mbufs still in the queues. 2244 */ 2245 for (i = 0; i < STGE_RX_RING_CNT; i++) { 2246 rxd = &sc->sc_cdata.stge_rxdesc[i]; 2247 if (rxd->rx_m != NULL) { 2248 bus_dmamap_sync(sc->sc_cdata.stge_rx_tag, 2249 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); 2250 bus_dmamap_unload(sc->sc_cdata.stge_rx_tag, 2251 rxd->rx_dmamap); 2252 m_freem(rxd->rx_m); 2253 rxd->rx_m = NULL; 2254 } 2255 } 2256 for (i = 0; i < STGE_TX_RING_CNT; i++) { 2257 txd = &sc->sc_cdata.stge_txdesc[i]; 2258 if (txd->tx_m != NULL) { 2259 bus_dmamap_sync(sc->sc_cdata.stge_tx_tag, 2260 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); 2261 bus_dmamap_unload(sc->sc_cdata.stge_tx_tag, 2262 txd->tx_dmamap); 2263 m_freem(txd->tx_m); 2264 txd->tx_m = NULL; 2265 } 2266 } 2267 2268 /* 2269 * Mark the interface down and cancel the watchdog timer. 2270 */ 2271 ifp = sc->sc_ifp; 2272 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2273 sc->sc_link = 0; 2274 } 2275 2276 static void 2277 stge_start_tx(struct stge_softc *sc) 2278 { 2279 uint32_t v; 2280 int i; 2281 2282 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2283 if ((v & MC_TxEnabled) != 0) 2284 return; 2285 v |= MC_TxEnable; 2286 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2287 CSR_WRITE_1(sc, STGE_TxDMAPollPeriod, 127); 2288 for (i = STGE_TIMEOUT; i > 0; i--) { 2289 DELAY(10); 2290 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2291 if ((v & MC_TxEnabled) != 0) 2292 break; 2293 } 2294 if (i == 0) 2295 device_printf(sc->sc_dev, "Starting Tx MAC timed out\n"); 2296 } 2297 2298 static void 2299 stge_start_rx(struct stge_softc *sc) 2300 { 2301 uint32_t v; 2302 int i; 2303 2304 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2305 if ((v & MC_RxEnabled) != 0) 2306 return; 2307 v |= MC_RxEnable; 2308 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2309 CSR_WRITE_1(sc, STGE_RxDMAPollPeriod, 1); 2310 for (i = STGE_TIMEOUT; i > 0; i--) { 2311 DELAY(10); 2312 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2313 if ((v & MC_RxEnabled) != 0) 2314 break; 2315 } 2316 if (i == 0) 2317 device_printf(sc->sc_dev, "Starting Rx MAC timed out\n"); 2318 } 2319 2320 static void 2321 stge_stop_tx(struct stge_softc *sc) 2322 { 2323 uint32_t v; 2324 int i; 2325 2326 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2327 if ((v & MC_TxEnabled) == 0) 2328 return; 2329 v |= MC_TxDisable; 2330 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2331 for (i = STGE_TIMEOUT; i > 0; i--) { 2332 DELAY(10); 2333 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2334 if ((v & MC_TxEnabled) == 0) 2335 break; 2336 } 2337 if (i == 0) 2338 device_printf(sc->sc_dev, "Stopping Tx MAC timed out\n"); 2339 } 2340 2341 static void 2342 stge_stop_rx(struct stge_softc *sc) 2343 { 2344 uint32_t v; 2345 int i; 2346 2347 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2348 if ((v & MC_RxEnabled) == 0) 2349 return; 2350 v |= MC_RxDisable; 2351 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2352 for (i = STGE_TIMEOUT; i > 0; i--) { 2353 DELAY(10); 2354 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2355 if ((v & MC_RxEnabled) == 0) 2356 break; 2357 } 2358 if (i == 0) 2359 device_printf(sc->sc_dev, "Stopping Rx MAC timed out\n"); 2360 } 2361 2362 static void 2363 stge_init_tx_ring(struct stge_softc *sc) 2364 { 2365 struct stge_ring_data *rd; 2366 struct stge_txdesc *txd; 2367 bus_addr_t addr; 2368 int i; 2369 2370 STAILQ_INIT(&sc->sc_cdata.stge_txfreeq); 2371 STAILQ_INIT(&sc->sc_cdata.stge_txbusyq); 2372 2373 sc->sc_cdata.stge_tx_prod = 0; 2374 sc->sc_cdata.stge_tx_cons = 0; 2375 sc->sc_cdata.stge_tx_cnt = 0; 2376 2377 rd = &sc->sc_rdata; 2378 bzero(rd->stge_tx_ring, STGE_TX_RING_SZ); 2379 for (i = 0; i < STGE_TX_RING_CNT; i++) { 2380 if (i == (STGE_TX_RING_CNT - 1)) 2381 addr = STGE_TX_RING_ADDR(sc, 0); 2382 else 2383 addr = STGE_TX_RING_ADDR(sc, i + 1); 2384 rd->stge_tx_ring[i].tfd_next = htole64(addr); 2385 rd->stge_tx_ring[i].tfd_control = htole64(TFD_TFDDone); 2386 txd = &sc->sc_cdata.stge_txdesc[i]; 2387 STAILQ_INSERT_TAIL(&sc->sc_cdata.stge_txfreeq, txd, tx_q); 2388 } 2389 2390 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag, 2391 sc->sc_cdata.stge_tx_ring_map, 2392 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2393 2394 } 2395 2396 static int 2397 stge_init_rx_ring(struct stge_softc *sc) 2398 { 2399 struct stge_ring_data *rd; 2400 bus_addr_t addr; 2401 int i; 2402 2403 sc->sc_cdata.stge_rx_cons = 0; 2404 STGE_RXCHAIN_RESET(sc); 2405 2406 rd = &sc->sc_rdata; 2407 bzero(rd->stge_rx_ring, STGE_RX_RING_SZ); 2408 for (i = 0; i < STGE_RX_RING_CNT; i++) { 2409 if (stge_newbuf(sc, i) != 0) 2410 return (ENOBUFS); 2411 if (i == (STGE_RX_RING_CNT - 1)) 2412 addr = STGE_RX_RING_ADDR(sc, 0); 2413 else 2414 addr = STGE_RX_RING_ADDR(sc, i + 1); 2415 rd->stge_rx_ring[i].rfd_next = htole64(addr); 2416 rd->stge_rx_ring[i].rfd_status = 0; 2417 } 2418 2419 bus_dmamap_sync(sc->sc_cdata.stge_rx_ring_tag, 2420 sc->sc_cdata.stge_rx_ring_map, 2421 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2422 2423 return (0); 2424 } 2425 2426 /* 2427 * stge_newbuf: 2428 * 2429 * Add a receive buffer to the indicated descriptor. 2430 */ 2431 static int 2432 stge_newbuf(struct stge_softc *sc, int idx) 2433 { 2434 struct stge_rxdesc *rxd; 2435 struct stge_rfd *rfd; 2436 struct mbuf *m; 2437 bus_dma_segment_t segs[1]; 2438 bus_dmamap_t map; 2439 int nsegs; 2440 2441 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 2442 if (m == NULL) 2443 return (ENOBUFS); 2444 m->m_len = m->m_pkthdr.len = MCLBYTES; 2445 /* 2446 * The hardware requires 4bytes aligned DMA address when JUMBO 2447 * frame is used. 2448 */ 2449 if (sc->sc_if_framesize <= (MCLBYTES - ETHER_ALIGN)) 2450 m_adj(m, ETHER_ALIGN); 2451 2452 if (bus_dmamap_load_mbuf_sg(sc->sc_cdata.stge_rx_tag, 2453 sc->sc_cdata.stge_rx_sparemap, m, segs, &nsegs, 0) != 0) { 2454 m_freem(m); 2455 return (ENOBUFS); 2456 } 2457 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 2458 2459 rxd = &sc->sc_cdata.stge_rxdesc[idx]; 2460 if (rxd->rx_m != NULL) { 2461 bus_dmamap_sync(sc->sc_cdata.stge_rx_tag, rxd->rx_dmamap, 2462 BUS_DMASYNC_POSTREAD); 2463 bus_dmamap_unload(sc->sc_cdata.stge_rx_tag, rxd->rx_dmamap); 2464 } 2465 map = rxd->rx_dmamap; 2466 rxd->rx_dmamap = sc->sc_cdata.stge_rx_sparemap; 2467 sc->sc_cdata.stge_rx_sparemap = map; 2468 bus_dmamap_sync(sc->sc_cdata.stge_rx_tag, rxd->rx_dmamap, 2469 BUS_DMASYNC_PREREAD); 2470 rxd->rx_m = m; 2471 2472 rfd = &sc->sc_rdata.stge_rx_ring[idx]; 2473 rfd->rfd_frag.frag_word0 = 2474 htole64(FRAG_ADDR(segs[0].ds_addr) | FRAG_LEN(segs[0].ds_len)); 2475 rfd->rfd_status = 0; 2476 2477 return (0); 2478 } 2479 2480 /* 2481 * stge_set_filter: 2482 * 2483 * Set up the receive filter. 2484 */ 2485 static void 2486 stge_set_filter(struct stge_softc *sc) 2487 { 2488 struct ifnet *ifp; 2489 uint16_t mode; 2490 2491 STGE_LOCK_ASSERT(sc); 2492 2493 ifp = sc->sc_ifp; 2494 2495 mode = CSR_READ_2(sc, STGE_ReceiveMode); 2496 mode |= RM_ReceiveUnicast; 2497 if ((ifp->if_flags & IFF_BROADCAST) != 0) 2498 mode |= RM_ReceiveBroadcast; 2499 else 2500 mode &= ~RM_ReceiveBroadcast; 2501 if ((ifp->if_flags & IFF_PROMISC) != 0) 2502 mode |= RM_ReceiveAllFrames; 2503 else 2504 mode &= ~RM_ReceiveAllFrames; 2505 2506 CSR_WRITE_2(sc, STGE_ReceiveMode, mode); 2507 } 2508 2509 static void 2510 stge_set_multi(struct stge_softc *sc) 2511 { 2512 struct ifnet *ifp; 2513 struct ifmultiaddr *ifma; 2514 uint32_t crc; 2515 uint32_t mchash[2]; 2516 uint16_t mode; 2517 int count; 2518 2519 STGE_LOCK_ASSERT(sc); 2520 2521 ifp = sc->sc_ifp; 2522 2523 mode = CSR_READ_2(sc, STGE_ReceiveMode); 2524 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) { 2525 if ((ifp->if_flags & IFF_PROMISC) != 0) 2526 mode |= RM_ReceiveAllFrames; 2527 else if ((ifp->if_flags & IFF_ALLMULTI) != 0) 2528 mode |= RM_ReceiveMulticast; 2529 CSR_WRITE_2(sc, STGE_ReceiveMode, mode); 2530 return; 2531 } 2532 2533 /* clear existing filters. */ 2534 CSR_WRITE_4(sc, STGE_HashTable0, 0); 2535 CSR_WRITE_4(sc, STGE_HashTable1, 0); 2536 2537 /* 2538 * Set up the multicast address filter by passing all multicast 2539 * addresses through a CRC generator, and then using the low-order 2540 * 6 bits as an index into the 64 bit multicast hash table. The 2541 * high order bits select the register, while the rest of the bits 2542 * select the bit within the register. 2543 */ 2544 2545 bzero(mchash, sizeof(mchash)); 2546 2547 count = 0; 2548 if_maddr_rlock(sc->sc_ifp); 2549 TAILQ_FOREACH(ifma, &sc->sc_ifp->if_multiaddrs, ifma_link) { 2550 if (ifma->ifma_addr->sa_family != AF_LINK) 2551 continue; 2552 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *) 2553 ifma->ifma_addr), ETHER_ADDR_LEN); 2554 2555 /* Just want the 6 least significant bits. */ 2556 crc &= 0x3f; 2557 2558 /* Set the corresponding bit in the hash table. */ 2559 mchash[crc >> 5] |= 1 << (crc & 0x1f); 2560 count++; 2561 } 2562 if_maddr_runlock(ifp); 2563 2564 mode &= ~(RM_ReceiveMulticast | RM_ReceiveAllFrames); 2565 if (count > 0) 2566 mode |= RM_ReceiveMulticastHash; 2567 else 2568 mode &= ~RM_ReceiveMulticastHash; 2569 2570 CSR_WRITE_4(sc, STGE_HashTable0, mchash[0]); 2571 CSR_WRITE_4(sc, STGE_HashTable1, mchash[1]); 2572 CSR_WRITE_2(sc, STGE_ReceiveMode, mode); 2573 } 2574 2575 static int 2576 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high) 2577 { 2578 int error, value; 2579 2580 if (!arg1) 2581 return (EINVAL); 2582 value = *(int *)arg1; 2583 error = sysctl_handle_int(oidp, &value, 0, req); 2584 if (error || !req->newptr) 2585 return (error); 2586 if (value < low || value > high) 2587 return (EINVAL); 2588 *(int *)arg1 = value; 2589 2590 return (0); 2591 } 2592 2593 static int 2594 sysctl_hw_stge_rxint_nframe(SYSCTL_HANDLER_ARGS) 2595 { 2596 return (sysctl_int_range(oidp, arg1, arg2, req, 2597 STGE_RXINT_NFRAME_MIN, STGE_RXINT_NFRAME_MAX)); 2598 } 2599 2600 static int 2601 sysctl_hw_stge_rxint_dmawait(SYSCTL_HANDLER_ARGS) 2602 { 2603 return (sysctl_int_range(oidp, arg1, arg2, req, 2604 STGE_RXINT_DMAWAIT_MIN, STGE_RXINT_DMAWAIT_MAX)); 2605 } 2606