1 /* $NetBSD: if_stge.c,v 1.32 2005/12/11 12:22:49 christos Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD 5 * 6 * Copyright (c) 2001 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Jason R. Thorpe. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Device driver for the Sundance Tech. TC9021 10/100/1000 36 * Ethernet controller. 37 */ 38 39 #include <sys/cdefs.h> 40 __FBSDID("$FreeBSD$"); 41 42 #ifdef HAVE_KERNEL_OPTION_HEADERS 43 #include "opt_device_polling.h" 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/endian.h> 49 #include <sys/mbuf.h> 50 #include <sys/malloc.h> 51 #include <sys/kernel.h> 52 #include <sys/module.h> 53 #include <sys/socket.h> 54 #include <sys/sockio.h> 55 #include <sys/sysctl.h> 56 #include <sys/taskqueue.h> 57 58 #include <net/bpf.h> 59 #include <net/ethernet.h> 60 #include <net/if.h> 61 #include <net/if_var.h> 62 #include <net/if_dl.h> 63 #include <net/if_media.h> 64 #include <net/if_types.h> 65 #include <net/if_vlan_var.h> 66 67 #include <machine/bus.h> 68 #include <machine/resource.h> 69 #include <sys/bus.h> 70 #include <sys/rman.h> 71 72 #include <dev/mii/mii.h> 73 #include <dev/mii/mii_bitbang.h> 74 #include <dev/mii/miivar.h> 75 76 #include <dev/pci/pcireg.h> 77 #include <dev/pci/pcivar.h> 78 79 #include <dev/stge/if_stgereg.h> 80 81 #define STGE_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) 82 83 MODULE_DEPEND(stge, pci, 1, 1, 1); 84 MODULE_DEPEND(stge, ether, 1, 1, 1); 85 MODULE_DEPEND(stge, miibus, 1, 1, 1); 86 87 /* "device miibus" required. See GENERIC if you get errors here. */ 88 #include "miibus_if.h" 89 90 /* 91 * Devices supported by this driver. 92 */ 93 static const struct stge_product { 94 uint16_t stge_vendorid; 95 uint16_t stge_deviceid; 96 const char *stge_name; 97 } stge_products[] = { 98 { VENDOR_SUNDANCETI, DEVICEID_SUNDANCETI_ST1023, 99 "Sundance ST-1023 Gigabit Ethernet" }, 100 101 { VENDOR_SUNDANCETI, DEVICEID_SUNDANCETI_ST2021, 102 "Sundance ST-2021 Gigabit Ethernet" }, 103 104 { VENDOR_TAMARACK, DEVICEID_TAMARACK_TC9021, 105 "Tamarack TC9021 Gigabit Ethernet" }, 106 107 { VENDOR_TAMARACK, DEVICEID_TAMARACK_TC9021_ALT, 108 "Tamarack TC9021 Gigabit Ethernet" }, 109 110 /* 111 * The Sundance sample boards use the Sundance vendor ID, 112 * but the Tamarack product ID. 113 */ 114 { VENDOR_SUNDANCETI, DEVICEID_TAMARACK_TC9021, 115 "Sundance TC9021 Gigabit Ethernet" }, 116 117 { VENDOR_SUNDANCETI, DEVICEID_TAMARACK_TC9021_ALT, 118 "Sundance TC9021 Gigabit Ethernet" }, 119 120 { VENDOR_DLINK, DEVICEID_DLINK_DL4000, 121 "D-Link DL-4000 Gigabit Ethernet" }, 122 123 { VENDOR_ANTARES, DEVICEID_ANTARES_TC9021, 124 "Antares Gigabit Ethernet" } 125 }; 126 127 static int stge_probe(device_t); 128 static int stge_attach(device_t); 129 static int stge_detach(device_t); 130 static int stge_shutdown(device_t); 131 static int stge_suspend(device_t); 132 static int stge_resume(device_t); 133 134 static int stge_encap(struct stge_softc *, struct mbuf **); 135 static void stge_start(struct ifnet *); 136 static void stge_start_locked(struct ifnet *); 137 static void stge_watchdog(struct stge_softc *); 138 static int stge_ioctl(struct ifnet *, u_long, caddr_t); 139 static void stge_init(void *); 140 static void stge_init_locked(struct stge_softc *); 141 static void stge_vlan_setup(struct stge_softc *); 142 static void stge_stop(struct stge_softc *); 143 static void stge_start_tx(struct stge_softc *); 144 static void stge_start_rx(struct stge_softc *); 145 static void stge_stop_tx(struct stge_softc *); 146 static void stge_stop_rx(struct stge_softc *); 147 148 static void stge_reset(struct stge_softc *, uint32_t); 149 static int stge_eeprom_wait(struct stge_softc *); 150 static void stge_read_eeprom(struct stge_softc *, int, uint16_t *); 151 static void stge_tick(void *); 152 static void stge_stats_update(struct stge_softc *); 153 static void stge_set_filter(struct stge_softc *); 154 static void stge_set_multi(struct stge_softc *); 155 156 static void stge_link_task(void *, int); 157 static void stge_intr(void *); 158 static __inline int stge_tx_error(struct stge_softc *); 159 static void stge_txeof(struct stge_softc *); 160 static int stge_rxeof(struct stge_softc *); 161 static __inline void stge_discard_rxbuf(struct stge_softc *, int); 162 static int stge_newbuf(struct stge_softc *, int); 163 #ifndef __NO_STRICT_ALIGNMENT 164 static __inline struct mbuf *stge_fixup_rx(struct stge_softc *, struct mbuf *); 165 #endif 166 167 static int stge_miibus_readreg(device_t, int, int); 168 static int stge_miibus_writereg(device_t, int, int, int); 169 static void stge_miibus_statchg(device_t); 170 static int stge_mediachange(struct ifnet *); 171 static void stge_mediastatus(struct ifnet *, struct ifmediareq *); 172 173 static void stge_dmamap_cb(void *, bus_dma_segment_t *, int, int); 174 static int stge_dma_alloc(struct stge_softc *); 175 static void stge_dma_free(struct stge_softc *); 176 static void stge_dma_wait(struct stge_softc *); 177 static void stge_init_tx_ring(struct stge_softc *); 178 static int stge_init_rx_ring(struct stge_softc *); 179 #ifdef DEVICE_POLLING 180 static int stge_poll(struct ifnet *, enum poll_cmd, int); 181 #endif 182 183 static void stge_setwol(struct stge_softc *); 184 static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int); 185 static int sysctl_hw_stge_rxint_nframe(SYSCTL_HANDLER_ARGS); 186 static int sysctl_hw_stge_rxint_dmawait(SYSCTL_HANDLER_ARGS); 187 188 /* 189 * MII bit-bang glue 190 */ 191 static uint32_t stge_mii_bitbang_read(device_t); 192 static void stge_mii_bitbang_write(device_t, uint32_t); 193 194 static const struct mii_bitbang_ops stge_mii_bitbang_ops = { 195 stge_mii_bitbang_read, 196 stge_mii_bitbang_write, 197 { 198 PC_MgmtData, /* MII_BIT_MDO */ 199 PC_MgmtData, /* MII_BIT_MDI */ 200 PC_MgmtClk, /* MII_BIT_MDC */ 201 PC_MgmtDir, /* MII_BIT_DIR_HOST_PHY */ 202 0, /* MII_BIT_DIR_PHY_HOST */ 203 } 204 }; 205 206 static device_method_t stge_methods[] = { 207 /* Device interface */ 208 DEVMETHOD(device_probe, stge_probe), 209 DEVMETHOD(device_attach, stge_attach), 210 DEVMETHOD(device_detach, stge_detach), 211 DEVMETHOD(device_shutdown, stge_shutdown), 212 DEVMETHOD(device_suspend, stge_suspend), 213 DEVMETHOD(device_resume, stge_resume), 214 215 /* MII interface */ 216 DEVMETHOD(miibus_readreg, stge_miibus_readreg), 217 DEVMETHOD(miibus_writereg, stge_miibus_writereg), 218 DEVMETHOD(miibus_statchg, stge_miibus_statchg), 219 220 DEVMETHOD_END 221 }; 222 223 static driver_t stge_driver = { 224 "stge", 225 stge_methods, 226 sizeof(struct stge_softc) 227 }; 228 229 static devclass_t stge_devclass; 230 231 DRIVER_MODULE(stge, pci, stge_driver, stge_devclass, 0, 0); 232 DRIVER_MODULE(miibus, stge, miibus_driver, miibus_devclass, 0, 0); 233 234 static struct resource_spec stge_res_spec_io[] = { 235 { SYS_RES_IOPORT, PCIR_BAR(0), RF_ACTIVE }, 236 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, 237 { -1, 0, 0 } 238 }; 239 240 static struct resource_spec stge_res_spec_mem[] = { 241 { SYS_RES_MEMORY, PCIR_BAR(1), RF_ACTIVE }, 242 { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, 243 { -1, 0, 0 } 244 }; 245 246 /* 247 * stge_mii_bitbang_read: [mii bit-bang interface function] 248 * 249 * Read the MII serial port for the MII bit-bang module. 250 */ 251 static uint32_t 252 stge_mii_bitbang_read(device_t dev) 253 { 254 struct stge_softc *sc; 255 uint32_t val; 256 257 sc = device_get_softc(dev); 258 259 val = CSR_READ_1(sc, STGE_PhyCtrl); 260 CSR_BARRIER(sc, STGE_PhyCtrl, 1, 261 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 262 return (val); 263 } 264 265 /* 266 * stge_mii_bitbang_write: [mii big-bang interface function] 267 * 268 * Write the MII serial port for the MII bit-bang module. 269 */ 270 static void 271 stge_mii_bitbang_write(device_t dev, uint32_t val) 272 { 273 struct stge_softc *sc; 274 275 sc = device_get_softc(dev); 276 277 CSR_WRITE_1(sc, STGE_PhyCtrl, val); 278 CSR_BARRIER(sc, STGE_PhyCtrl, 1, 279 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 280 } 281 282 /* 283 * sc_miibus_readreg: [mii interface function] 284 * 285 * Read a PHY register on the MII of the TC9021. 286 */ 287 static int 288 stge_miibus_readreg(device_t dev, int phy, int reg) 289 { 290 struct stge_softc *sc; 291 int error, val; 292 293 sc = device_get_softc(dev); 294 295 if (reg == STGE_PhyCtrl) { 296 /* XXX allow ip1000phy read STGE_PhyCtrl register. */ 297 STGE_MII_LOCK(sc); 298 error = CSR_READ_1(sc, STGE_PhyCtrl); 299 STGE_MII_UNLOCK(sc); 300 return (error); 301 } 302 303 STGE_MII_LOCK(sc); 304 val = mii_bitbang_readreg(dev, &stge_mii_bitbang_ops, phy, reg); 305 STGE_MII_UNLOCK(sc); 306 return (val); 307 } 308 309 /* 310 * stge_miibus_writereg: [mii interface function] 311 * 312 * Write a PHY register on the MII of the TC9021. 313 */ 314 static int 315 stge_miibus_writereg(device_t dev, int phy, int reg, int val) 316 { 317 struct stge_softc *sc; 318 319 sc = device_get_softc(dev); 320 321 STGE_MII_LOCK(sc); 322 mii_bitbang_writereg(dev, &stge_mii_bitbang_ops, phy, reg, val); 323 STGE_MII_UNLOCK(sc); 324 return (0); 325 } 326 327 /* 328 * stge_miibus_statchg: [mii interface function] 329 * 330 * Callback from MII layer when media changes. 331 */ 332 static void 333 stge_miibus_statchg(device_t dev) 334 { 335 struct stge_softc *sc; 336 337 sc = device_get_softc(dev); 338 taskqueue_enqueue(taskqueue_swi, &sc->sc_link_task); 339 } 340 341 /* 342 * stge_mediastatus: [ifmedia interface function] 343 * 344 * Get the current interface media status. 345 */ 346 static void 347 stge_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 348 { 349 struct stge_softc *sc; 350 struct mii_data *mii; 351 352 sc = ifp->if_softc; 353 mii = device_get_softc(sc->sc_miibus); 354 355 mii_pollstat(mii); 356 ifmr->ifm_status = mii->mii_media_status; 357 ifmr->ifm_active = mii->mii_media_active; 358 } 359 360 /* 361 * stge_mediachange: [ifmedia interface function] 362 * 363 * Set hardware to newly-selected media. 364 */ 365 static int 366 stge_mediachange(struct ifnet *ifp) 367 { 368 struct stge_softc *sc; 369 struct mii_data *mii; 370 371 sc = ifp->if_softc; 372 mii = device_get_softc(sc->sc_miibus); 373 mii_mediachg(mii); 374 375 return (0); 376 } 377 378 static int 379 stge_eeprom_wait(struct stge_softc *sc) 380 { 381 int i; 382 383 for (i = 0; i < STGE_TIMEOUT; i++) { 384 DELAY(1000); 385 if ((CSR_READ_2(sc, STGE_EepromCtrl) & EC_EepromBusy) == 0) 386 return (0); 387 } 388 return (1); 389 } 390 391 /* 392 * stge_read_eeprom: 393 * 394 * Read data from the serial EEPROM. 395 */ 396 static void 397 stge_read_eeprom(struct stge_softc *sc, int offset, uint16_t *data) 398 { 399 400 if (stge_eeprom_wait(sc)) 401 device_printf(sc->sc_dev, "EEPROM failed to come ready\n"); 402 403 CSR_WRITE_2(sc, STGE_EepromCtrl, 404 EC_EepromAddress(offset) | EC_EepromOpcode(EC_OP_RR)); 405 if (stge_eeprom_wait(sc)) 406 device_printf(sc->sc_dev, "EEPROM read timed out\n"); 407 *data = CSR_READ_2(sc, STGE_EepromData); 408 } 409 410 411 static int 412 stge_probe(device_t dev) 413 { 414 const struct stge_product *sp; 415 int i; 416 uint16_t vendor, devid; 417 418 vendor = pci_get_vendor(dev); 419 devid = pci_get_device(dev); 420 sp = stge_products; 421 for (i = 0; i < nitems(stge_products); i++, sp++) { 422 if (vendor == sp->stge_vendorid && 423 devid == sp->stge_deviceid) { 424 device_set_desc(dev, sp->stge_name); 425 return (BUS_PROBE_DEFAULT); 426 } 427 } 428 429 return (ENXIO); 430 } 431 432 static int 433 stge_attach(device_t dev) 434 { 435 struct stge_softc *sc; 436 struct ifnet *ifp; 437 uint8_t enaddr[ETHER_ADDR_LEN]; 438 int error, flags, i; 439 uint16_t cmd; 440 uint32_t val; 441 442 error = 0; 443 sc = device_get_softc(dev); 444 sc->sc_dev = dev; 445 446 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, 447 MTX_DEF); 448 mtx_init(&sc->sc_mii_mtx, "stge_mii_mutex", NULL, MTX_DEF); 449 callout_init_mtx(&sc->sc_tick_ch, &sc->sc_mtx, 0); 450 TASK_INIT(&sc->sc_link_task, 0, stge_link_task, sc); 451 452 /* 453 * Map the device. 454 */ 455 pci_enable_busmaster(dev); 456 cmd = pci_read_config(dev, PCIR_COMMAND, 2); 457 val = pci_read_config(dev, PCIR_BAR(1), 4); 458 if (PCI_BAR_IO(val)) 459 sc->sc_spec = stge_res_spec_mem; 460 else { 461 val = pci_read_config(dev, PCIR_BAR(0), 4); 462 if (!PCI_BAR_IO(val)) { 463 device_printf(sc->sc_dev, "couldn't locate IO BAR\n"); 464 error = ENXIO; 465 goto fail; 466 } 467 sc->sc_spec = stge_res_spec_io; 468 } 469 error = bus_alloc_resources(dev, sc->sc_spec, sc->sc_res); 470 if (error != 0) { 471 device_printf(dev, "couldn't allocate %s resources\n", 472 sc->sc_spec == stge_res_spec_mem ? "memory" : "I/O"); 473 goto fail; 474 } 475 sc->sc_rev = pci_get_revid(dev); 476 477 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 478 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 479 "rxint_nframe", CTLTYPE_INT|CTLFLAG_RW, &sc->sc_rxint_nframe, 0, 480 sysctl_hw_stge_rxint_nframe, "I", "stge rx interrupt nframe"); 481 482 SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev), 483 SYSCTL_CHILDREN(device_get_sysctl_tree(dev)), OID_AUTO, 484 "rxint_dmawait", CTLTYPE_INT|CTLFLAG_RW, &sc->sc_rxint_dmawait, 0, 485 sysctl_hw_stge_rxint_dmawait, "I", "stge rx interrupt dmawait"); 486 487 /* Pull in device tunables. */ 488 sc->sc_rxint_nframe = STGE_RXINT_NFRAME_DEFAULT; 489 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 490 "rxint_nframe", &sc->sc_rxint_nframe); 491 if (error == 0) { 492 if (sc->sc_rxint_nframe < STGE_RXINT_NFRAME_MIN || 493 sc->sc_rxint_nframe > STGE_RXINT_NFRAME_MAX) { 494 device_printf(dev, "rxint_nframe value out of range; " 495 "using default: %d\n", STGE_RXINT_NFRAME_DEFAULT); 496 sc->sc_rxint_nframe = STGE_RXINT_NFRAME_DEFAULT; 497 } 498 } 499 500 sc->sc_rxint_dmawait = STGE_RXINT_DMAWAIT_DEFAULT; 501 error = resource_int_value(device_get_name(dev), device_get_unit(dev), 502 "rxint_dmawait", &sc->sc_rxint_dmawait); 503 if (error == 0) { 504 if (sc->sc_rxint_dmawait < STGE_RXINT_DMAWAIT_MIN || 505 sc->sc_rxint_dmawait > STGE_RXINT_DMAWAIT_MAX) { 506 device_printf(dev, "rxint_dmawait value out of range; " 507 "using default: %d\n", STGE_RXINT_DMAWAIT_DEFAULT); 508 sc->sc_rxint_dmawait = STGE_RXINT_DMAWAIT_DEFAULT; 509 } 510 } 511 512 if ((error = stge_dma_alloc(sc)) != 0) 513 goto fail; 514 515 /* 516 * Determine if we're copper or fiber. It affects how we 517 * reset the card. 518 */ 519 if (CSR_READ_4(sc, STGE_AsicCtrl) & AC_PhyMedia) 520 sc->sc_usefiber = 1; 521 else 522 sc->sc_usefiber = 0; 523 524 /* Load LED configuration from EEPROM. */ 525 stge_read_eeprom(sc, STGE_EEPROM_LEDMode, &sc->sc_led); 526 527 /* 528 * Reset the chip to a known state. 529 */ 530 STGE_LOCK(sc); 531 stge_reset(sc, STGE_RESET_FULL); 532 STGE_UNLOCK(sc); 533 534 /* 535 * Reading the station address from the EEPROM doesn't seem 536 * to work, at least on my sample boards. Instead, since 537 * the reset sequence does AutoInit, read it from the station 538 * address registers. For Sundance 1023 you can only read it 539 * from EEPROM. 540 */ 541 if (pci_get_device(dev) != DEVICEID_SUNDANCETI_ST1023) { 542 uint16_t v; 543 544 v = CSR_READ_2(sc, STGE_StationAddress0); 545 enaddr[0] = v & 0xff; 546 enaddr[1] = v >> 8; 547 v = CSR_READ_2(sc, STGE_StationAddress1); 548 enaddr[2] = v & 0xff; 549 enaddr[3] = v >> 8; 550 v = CSR_READ_2(sc, STGE_StationAddress2); 551 enaddr[4] = v & 0xff; 552 enaddr[5] = v >> 8; 553 sc->sc_stge1023 = 0; 554 } else { 555 uint16_t myaddr[ETHER_ADDR_LEN / 2]; 556 for (i = 0; i <ETHER_ADDR_LEN / 2; i++) { 557 stge_read_eeprom(sc, STGE_EEPROM_StationAddress0 + i, 558 &myaddr[i]); 559 myaddr[i] = le16toh(myaddr[i]); 560 } 561 bcopy(myaddr, enaddr, sizeof(enaddr)); 562 sc->sc_stge1023 = 1; 563 } 564 565 ifp = sc->sc_ifp = if_alloc(IFT_ETHER); 566 if (ifp == NULL) { 567 device_printf(sc->sc_dev, "failed to if_alloc()\n"); 568 error = ENXIO; 569 goto fail; 570 } 571 572 ifp->if_softc = sc; 573 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 574 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 575 ifp->if_ioctl = stge_ioctl; 576 ifp->if_start = stge_start; 577 ifp->if_init = stge_init; 578 ifp->if_snd.ifq_drv_maxlen = STGE_TX_RING_CNT - 1; 579 IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen); 580 IFQ_SET_READY(&ifp->if_snd); 581 /* Revision B3 and earlier chips have checksum bug. */ 582 if (sc->sc_rev >= 0x0c) { 583 ifp->if_hwassist = STGE_CSUM_FEATURES; 584 ifp->if_capabilities = IFCAP_HWCSUM; 585 } else { 586 ifp->if_hwassist = 0; 587 ifp->if_capabilities = 0; 588 } 589 ifp->if_capabilities |= IFCAP_WOL_MAGIC; 590 ifp->if_capenable = ifp->if_capabilities; 591 592 /* 593 * Read some important bits from the PhyCtrl register. 594 */ 595 sc->sc_PhyCtrl = CSR_READ_1(sc, STGE_PhyCtrl) & 596 (PC_PhyDuplexPolarity | PC_PhyLnkPolarity); 597 598 /* Set up MII bus. */ 599 flags = MIIF_DOPAUSE; 600 if (sc->sc_rev >= 0x40 && sc->sc_rev <= 0x4e) 601 flags |= MIIF_MACPRIV0; 602 error = mii_attach(sc->sc_dev, &sc->sc_miibus, ifp, stge_mediachange, 603 stge_mediastatus, BMSR_DEFCAPMASK, MII_PHY_ANY, MII_OFFSET_ANY, 604 flags); 605 if (error != 0) { 606 device_printf(sc->sc_dev, "attaching PHYs failed\n"); 607 goto fail; 608 } 609 610 ether_ifattach(ifp, enaddr); 611 612 /* VLAN capability setup */ 613 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING; 614 if (sc->sc_rev >= 0x0c) 615 ifp->if_capabilities |= IFCAP_VLAN_HWCSUM; 616 ifp->if_capenable = ifp->if_capabilities; 617 #ifdef DEVICE_POLLING 618 ifp->if_capabilities |= IFCAP_POLLING; 619 #endif 620 /* 621 * Tell the upper layer(s) we support long frames. 622 * Must appear after the call to ether_ifattach() because 623 * ether_ifattach() sets ifi_hdrlen to the default value. 624 */ 625 ifp->if_hdrlen = sizeof(struct ether_vlan_header); 626 627 /* 628 * The manual recommends disabling early transmit, so we 629 * do. It's disabled anyway, if using IP checksumming, 630 * since the entire packet must be in the FIFO in order 631 * for the chip to perform the checksum. 632 */ 633 sc->sc_txthresh = 0x0fff; 634 635 /* 636 * Disable MWI if the PCI layer tells us to. 637 */ 638 sc->sc_DMACtrl = 0; 639 if ((cmd & PCIM_CMD_MWRICEN) == 0) 640 sc->sc_DMACtrl |= DMAC_MWIDisable; 641 642 /* 643 * Hookup IRQ 644 */ 645 error = bus_setup_intr(dev, sc->sc_res[1], INTR_TYPE_NET | INTR_MPSAFE, 646 NULL, stge_intr, sc, &sc->sc_ih); 647 if (error != 0) { 648 ether_ifdetach(ifp); 649 device_printf(sc->sc_dev, "couldn't set up IRQ\n"); 650 sc->sc_ifp = NULL; 651 goto fail; 652 } 653 654 fail: 655 if (error != 0) 656 stge_detach(dev); 657 658 return (error); 659 } 660 661 static int 662 stge_detach(device_t dev) 663 { 664 struct stge_softc *sc; 665 struct ifnet *ifp; 666 667 sc = device_get_softc(dev); 668 669 ifp = sc->sc_ifp; 670 #ifdef DEVICE_POLLING 671 if (ifp && ifp->if_capenable & IFCAP_POLLING) 672 ether_poll_deregister(ifp); 673 #endif 674 if (device_is_attached(dev)) { 675 STGE_LOCK(sc); 676 /* XXX */ 677 sc->sc_detach = 1; 678 stge_stop(sc); 679 STGE_UNLOCK(sc); 680 callout_drain(&sc->sc_tick_ch); 681 taskqueue_drain(taskqueue_swi, &sc->sc_link_task); 682 ether_ifdetach(ifp); 683 } 684 685 if (sc->sc_miibus != NULL) { 686 device_delete_child(dev, sc->sc_miibus); 687 sc->sc_miibus = NULL; 688 } 689 bus_generic_detach(dev); 690 stge_dma_free(sc); 691 692 if (ifp != NULL) { 693 if_free(ifp); 694 sc->sc_ifp = NULL; 695 } 696 697 if (sc->sc_ih) { 698 bus_teardown_intr(dev, sc->sc_res[1], sc->sc_ih); 699 sc->sc_ih = NULL; 700 } 701 bus_release_resources(dev, sc->sc_spec, sc->sc_res); 702 703 mtx_destroy(&sc->sc_mii_mtx); 704 mtx_destroy(&sc->sc_mtx); 705 706 return (0); 707 } 708 709 struct stge_dmamap_arg { 710 bus_addr_t stge_busaddr; 711 }; 712 713 static void 714 stge_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error) 715 { 716 struct stge_dmamap_arg *ctx; 717 718 if (error != 0) 719 return; 720 721 ctx = (struct stge_dmamap_arg *)arg; 722 ctx->stge_busaddr = segs[0].ds_addr; 723 } 724 725 static int 726 stge_dma_alloc(struct stge_softc *sc) 727 { 728 struct stge_dmamap_arg ctx; 729 struct stge_txdesc *txd; 730 struct stge_rxdesc *rxd; 731 int error, i; 732 733 /* create parent tag. */ 734 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev),/* parent */ 735 1, 0, /* algnmnt, boundary */ 736 STGE_DMA_MAXADDR, /* lowaddr */ 737 BUS_SPACE_MAXADDR, /* highaddr */ 738 NULL, NULL, /* filter, filterarg */ 739 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 740 0, /* nsegments */ 741 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 742 0, /* flags */ 743 NULL, NULL, /* lockfunc, lockarg */ 744 &sc->sc_cdata.stge_parent_tag); 745 if (error != 0) { 746 device_printf(sc->sc_dev, "failed to create parent DMA tag\n"); 747 goto fail; 748 } 749 /* create tag for Tx ring. */ 750 error = bus_dma_tag_create(sc->sc_cdata.stge_parent_tag,/* parent */ 751 STGE_RING_ALIGN, 0, /* algnmnt, boundary */ 752 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 753 BUS_SPACE_MAXADDR, /* highaddr */ 754 NULL, NULL, /* filter, filterarg */ 755 STGE_TX_RING_SZ, /* maxsize */ 756 1, /* nsegments */ 757 STGE_TX_RING_SZ, /* maxsegsize */ 758 0, /* flags */ 759 NULL, NULL, /* lockfunc, lockarg */ 760 &sc->sc_cdata.stge_tx_ring_tag); 761 if (error != 0) { 762 device_printf(sc->sc_dev, 763 "failed to allocate Tx ring DMA tag\n"); 764 goto fail; 765 } 766 767 /* create tag for Rx ring. */ 768 error = bus_dma_tag_create(sc->sc_cdata.stge_parent_tag,/* parent */ 769 STGE_RING_ALIGN, 0, /* algnmnt, boundary */ 770 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */ 771 BUS_SPACE_MAXADDR, /* highaddr */ 772 NULL, NULL, /* filter, filterarg */ 773 STGE_RX_RING_SZ, /* maxsize */ 774 1, /* nsegments */ 775 STGE_RX_RING_SZ, /* maxsegsize */ 776 0, /* flags */ 777 NULL, NULL, /* lockfunc, lockarg */ 778 &sc->sc_cdata.stge_rx_ring_tag); 779 if (error != 0) { 780 device_printf(sc->sc_dev, 781 "failed to allocate Rx ring DMA tag\n"); 782 goto fail; 783 } 784 785 /* create tag for Tx buffers. */ 786 error = bus_dma_tag_create(sc->sc_cdata.stge_parent_tag,/* parent */ 787 1, 0, /* algnmnt, boundary */ 788 BUS_SPACE_MAXADDR, /* lowaddr */ 789 BUS_SPACE_MAXADDR, /* highaddr */ 790 NULL, NULL, /* filter, filterarg */ 791 MCLBYTES * STGE_MAXTXSEGS, /* maxsize */ 792 STGE_MAXTXSEGS, /* nsegments */ 793 MCLBYTES, /* maxsegsize */ 794 0, /* flags */ 795 NULL, NULL, /* lockfunc, lockarg */ 796 &sc->sc_cdata.stge_tx_tag); 797 if (error != 0) { 798 device_printf(sc->sc_dev, "failed to allocate Tx DMA tag\n"); 799 goto fail; 800 } 801 802 /* create tag for Rx buffers. */ 803 error = bus_dma_tag_create(sc->sc_cdata.stge_parent_tag,/* parent */ 804 1, 0, /* algnmnt, boundary */ 805 BUS_SPACE_MAXADDR, /* lowaddr */ 806 BUS_SPACE_MAXADDR, /* highaddr */ 807 NULL, NULL, /* filter, filterarg */ 808 MCLBYTES, /* maxsize */ 809 1, /* nsegments */ 810 MCLBYTES, /* maxsegsize */ 811 0, /* flags */ 812 NULL, NULL, /* lockfunc, lockarg */ 813 &sc->sc_cdata.stge_rx_tag); 814 if (error != 0) { 815 device_printf(sc->sc_dev, "failed to allocate Rx DMA tag\n"); 816 goto fail; 817 } 818 819 /* allocate DMA'able memory and load the DMA map for Tx ring. */ 820 error = bus_dmamem_alloc(sc->sc_cdata.stge_tx_ring_tag, 821 (void **)&sc->sc_rdata.stge_tx_ring, BUS_DMA_NOWAIT | 822 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->sc_cdata.stge_tx_ring_map); 823 if (error != 0) { 824 device_printf(sc->sc_dev, 825 "failed to allocate DMA'able memory for Tx ring\n"); 826 goto fail; 827 } 828 829 ctx.stge_busaddr = 0; 830 error = bus_dmamap_load(sc->sc_cdata.stge_tx_ring_tag, 831 sc->sc_cdata.stge_tx_ring_map, sc->sc_rdata.stge_tx_ring, 832 STGE_TX_RING_SZ, stge_dmamap_cb, &ctx, BUS_DMA_NOWAIT); 833 if (error != 0 || ctx.stge_busaddr == 0) { 834 device_printf(sc->sc_dev, 835 "failed to load DMA'able memory for Tx ring\n"); 836 goto fail; 837 } 838 sc->sc_rdata.stge_tx_ring_paddr = ctx.stge_busaddr; 839 840 /* allocate DMA'able memory and load the DMA map for Rx ring. */ 841 error = bus_dmamem_alloc(sc->sc_cdata.stge_rx_ring_tag, 842 (void **)&sc->sc_rdata.stge_rx_ring, BUS_DMA_NOWAIT | 843 BUS_DMA_COHERENT | BUS_DMA_ZERO, &sc->sc_cdata.stge_rx_ring_map); 844 if (error != 0) { 845 device_printf(sc->sc_dev, 846 "failed to allocate DMA'able memory for Rx ring\n"); 847 goto fail; 848 } 849 850 ctx.stge_busaddr = 0; 851 error = bus_dmamap_load(sc->sc_cdata.stge_rx_ring_tag, 852 sc->sc_cdata.stge_rx_ring_map, sc->sc_rdata.stge_rx_ring, 853 STGE_RX_RING_SZ, stge_dmamap_cb, &ctx, BUS_DMA_NOWAIT); 854 if (error != 0 || ctx.stge_busaddr == 0) { 855 device_printf(sc->sc_dev, 856 "failed to load DMA'able memory for Rx ring\n"); 857 goto fail; 858 } 859 sc->sc_rdata.stge_rx_ring_paddr = ctx.stge_busaddr; 860 861 /* create DMA maps for Tx buffers. */ 862 for (i = 0; i < STGE_TX_RING_CNT; i++) { 863 txd = &sc->sc_cdata.stge_txdesc[i]; 864 txd->tx_m = NULL; 865 txd->tx_dmamap = 0; 866 error = bus_dmamap_create(sc->sc_cdata.stge_tx_tag, 0, 867 &txd->tx_dmamap); 868 if (error != 0) { 869 device_printf(sc->sc_dev, 870 "failed to create Tx dmamap\n"); 871 goto fail; 872 } 873 } 874 /* create DMA maps for Rx buffers. */ 875 if ((error = bus_dmamap_create(sc->sc_cdata.stge_rx_tag, 0, 876 &sc->sc_cdata.stge_rx_sparemap)) != 0) { 877 device_printf(sc->sc_dev, "failed to create spare Rx dmamap\n"); 878 goto fail; 879 } 880 for (i = 0; i < STGE_RX_RING_CNT; i++) { 881 rxd = &sc->sc_cdata.stge_rxdesc[i]; 882 rxd->rx_m = NULL; 883 rxd->rx_dmamap = 0; 884 error = bus_dmamap_create(sc->sc_cdata.stge_rx_tag, 0, 885 &rxd->rx_dmamap); 886 if (error != 0) { 887 device_printf(sc->sc_dev, 888 "failed to create Rx dmamap\n"); 889 goto fail; 890 } 891 } 892 893 fail: 894 return (error); 895 } 896 897 static void 898 stge_dma_free(struct stge_softc *sc) 899 { 900 struct stge_txdesc *txd; 901 struct stge_rxdesc *rxd; 902 int i; 903 904 /* Tx ring */ 905 if (sc->sc_cdata.stge_tx_ring_tag) { 906 if (sc->sc_rdata.stge_tx_ring_paddr) 907 bus_dmamap_unload(sc->sc_cdata.stge_tx_ring_tag, 908 sc->sc_cdata.stge_tx_ring_map); 909 if (sc->sc_rdata.stge_tx_ring) 910 bus_dmamem_free(sc->sc_cdata.stge_tx_ring_tag, 911 sc->sc_rdata.stge_tx_ring, 912 sc->sc_cdata.stge_tx_ring_map); 913 sc->sc_rdata.stge_tx_ring = NULL; 914 sc->sc_rdata.stge_tx_ring_paddr = 0; 915 bus_dma_tag_destroy(sc->sc_cdata.stge_tx_ring_tag); 916 sc->sc_cdata.stge_tx_ring_tag = NULL; 917 } 918 /* Rx ring */ 919 if (sc->sc_cdata.stge_rx_ring_tag) { 920 if (sc->sc_rdata.stge_rx_ring_paddr) 921 bus_dmamap_unload(sc->sc_cdata.stge_rx_ring_tag, 922 sc->sc_cdata.stge_rx_ring_map); 923 if (sc->sc_rdata.stge_rx_ring) 924 bus_dmamem_free(sc->sc_cdata.stge_rx_ring_tag, 925 sc->sc_rdata.stge_rx_ring, 926 sc->sc_cdata.stge_rx_ring_map); 927 sc->sc_rdata.stge_rx_ring = NULL; 928 sc->sc_rdata.stge_rx_ring_paddr = 0; 929 bus_dma_tag_destroy(sc->sc_cdata.stge_rx_ring_tag); 930 sc->sc_cdata.stge_rx_ring_tag = NULL; 931 } 932 /* Tx buffers */ 933 if (sc->sc_cdata.stge_tx_tag) { 934 for (i = 0; i < STGE_TX_RING_CNT; i++) { 935 txd = &sc->sc_cdata.stge_txdesc[i]; 936 if (txd->tx_dmamap) { 937 bus_dmamap_destroy(sc->sc_cdata.stge_tx_tag, 938 txd->tx_dmamap); 939 txd->tx_dmamap = 0; 940 } 941 } 942 bus_dma_tag_destroy(sc->sc_cdata.stge_tx_tag); 943 sc->sc_cdata.stge_tx_tag = NULL; 944 } 945 /* Rx buffers */ 946 if (sc->sc_cdata.stge_rx_tag) { 947 for (i = 0; i < STGE_RX_RING_CNT; i++) { 948 rxd = &sc->sc_cdata.stge_rxdesc[i]; 949 if (rxd->rx_dmamap) { 950 bus_dmamap_destroy(sc->sc_cdata.stge_rx_tag, 951 rxd->rx_dmamap); 952 rxd->rx_dmamap = 0; 953 } 954 } 955 if (sc->sc_cdata.stge_rx_sparemap) { 956 bus_dmamap_destroy(sc->sc_cdata.stge_rx_tag, 957 sc->sc_cdata.stge_rx_sparemap); 958 sc->sc_cdata.stge_rx_sparemap = 0; 959 } 960 bus_dma_tag_destroy(sc->sc_cdata.stge_rx_tag); 961 sc->sc_cdata.stge_rx_tag = NULL; 962 } 963 964 if (sc->sc_cdata.stge_parent_tag) { 965 bus_dma_tag_destroy(sc->sc_cdata.stge_parent_tag); 966 sc->sc_cdata.stge_parent_tag = NULL; 967 } 968 } 969 970 /* 971 * stge_shutdown: 972 * 973 * Make sure the interface is stopped at reboot time. 974 */ 975 static int 976 stge_shutdown(device_t dev) 977 { 978 979 return (stge_suspend(dev)); 980 } 981 982 static void 983 stge_setwol(struct stge_softc *sc) 984 { 985 struct ifnet *ifp; 986 uint8_t v; 987 988 STGE_LOCK_ASSERT(sc); 989 990 ifp = sc->sc_ifp; 991 v = CSR_READ_1(sc, STGE_WakeEvent); 992 /* Disable all WOL bits. */ 993 v &= ~(WE_WakePktEnable | WE_MagicPktEnable | WE_LinkEventEnable | 994 WE_WakeOnLanEnable); 995 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0) 996 v |= WE_MagicPktEnable | WE_WakeOnLanEnable; 997 CSR_WRITE_1(sc, STGE_WakeEvent, v); 998 /* Reset Tx and prevent transmission. */ 999 CSR_WRITE_4(sc, STGE_AsicCtrl, 1000 CSR_READ_4(sc, STGE_AsicCtrl) | AC_TxReset); 1001 /* 1002 * TC9021 automatically reset link speed to 100Mbps when it's put 1003 * into sleep so there is no need to try to resetting link speed. 1004 */ 1005 } 1006 1007 static int 1008 stge_suspend(device_t dev) 1009 { 1010 struct stge_softc *sc; 1011 1012 sc = device_get_softc(dev); 1013 1014 STGE_LOCK(sc); 1015 stge_stop(sc); 1016 sc->sc_suspended = 1; 1017 stge_setwol(sc); 1018 STGE_UNLOCK(sc); 1019 1020 return (0); 1021 } 1022 1023 static int 1024 stge_resume(device_t dev) 1025 { 1026 struct stge_softc *sc; 1027 struct ifnet *ifp; 1028 uint8_t v; 1029 1030 sc = device_get_softc(dev); 1031 1032 STGE_LOCK(sc); 1033 /* 1034 * Clear WOL bits, so special frames wouldn't interfere 1035 * normal Rx operation anymore. 1036 */ 1037 v = CSR_READ_1(sc, STGE_WakeEvent); 1038 v &= ~(WE_WakePktEnable | WE_MagicPktEnable | WE_LinkEventEnable | 1039 WE_WakeOnLanEnable); 1040 CSR_WRITE_1(sc, STGE_WakeEvent, v); 1041 ifp = sc->sc_ifp; 1042 if (ifp->if_flags & IFF_UP) 1043 stge_init_locked(sc); 1044 1045 sc->sc_suspended = 0; 1046 STGE_UNLOCK(sc); 1047 1048 return (0); 1049 } 1050 1051 static void 1052 stge_dma_wait(struct stge_softc *sc) 1053 { 1054 int i; 1055 1056 for (i = 0; i < STGE_TIMEOUT; i++) { 1057 DELAY(2); 1058 if ((CSR_READ_4(sc, STGE_DMACtrl) & DMAC_TxDMAInProg) == 0) 1059 break; 1060 } 1061 1062 if (i == STGE_TIMEOUT) 1063 device_printf(sc->sc_dev, "DMA wait timed out\n"); 1064 } 1065 1066 static int 1067 stge_encap(struct stge_softc *sc, struct mbuf **m_head) 1068 { 1069 struct stge_txdesc *txd; 1070 struct stge_tfd *tfd; 1071 struct mbuf *m; 1072 bus_dma_segment_t txsegs[STGE_MAXTXSEGS]; 1073 int error, i, nsegs, si; 1074 uint64_t csum_flags, tfc; 1075 1076 STGE_LOCK_ASSERT(sc); 1077 1078 if ((txd = STAILQ_FIRST(&sc->sc_cdata.stge_txfreeq)) == NULL) 1079 return (ENOBUFS); 1080 1081 error = bus_dmamap_load_mbuf_sg(sc->sc_cdata.stge_tx_tag, 1082 txd->tx_dmamap, *m_head, txsegs, &nsegs, 0); 1083 if (error == EFBIG) { 1084 m = m_collapse(*m_head, M_NOWAIT, STGE_MAXTXSEGS); 1085 if (m == NULL) { 1086 m_freem(*m_head); 1087 *m_head = NULL; 1088 return (ENOMEM); 1089 } 1090 *m_head = m; 1091 error = bus_dmamap_load_mbuf_sg(sc->sc_cdata.stge_tx_tag, 1092 txd->tx_dmamap, *m_head, txsegs, &nsegs, 0); 1093 if (error != 0) { 1094 m_freem(*m_head); 1095 *m_head = NULL; 1096 return (error); 1097 } 1098 } else if (error != 0) 1099 return (error); 1100 if (nsegs == 0) { 1101 m_freem(*m_head); 1102 *m_head = NULL; 1103 return (EIO); 1104 } 1105 1106 m = *m_head; 1107 csum_flags = 0; 1108 if ((m->m_pkthdr.csum_flags & STGE_CSUM_FEATURES) != 0) { 1109 if (m->m_pkthdr.csum_flags & CSUM_IP) 1110 csum_flags |= TFD_IPChecksumEnable; 1111 if (m->m_pkthdr.csum_flags & CSUM_TCP) 1112 csum_flags |= TFD_TCPChecksumEnable; 1113 else if (m->m_pkthdr.csum_flags & CSUM_UDP) 1114 csum_flags |= TFD_UDPChecksumEnable; 1115 } 1116 1117 si = sc->sc_cdata.stge_tx_prod; 1118 tfd = &sc->sc_rdata.stge_tx_ring[si]; 1119 for (i = 0; i < nsegs; i++) 1120 tfd->tfd_frags[i].frag_word0 = 1121 htole64(FRAG_ADDR(txsegs[i].ds_addr) | 1122 FRAG_LEN(txsegs[i].ds_len)); 1123 sc->sc_cdata.stge_tx_cnt++; 1124 1125 tfc = TFD_FrameId(si) | TFD_WordAlign(TFD_WordAlign_disable) | 1126 TFD_FragCount(nsegs) | csum_flags; 1127 if (sc->sc_cdata.stge_tx_cnt >= STGE_TX_HIWAT) 1128 tfc |= TFD_TxDMAIndicate; 1129 1130 /* Update producer index. */ 1131 sc->sc_cdata.stge_tx_prod = (si + 1) % STGE_TX_RING_CNT; 1132 1133 /* Check if we have a VLAN tag to insert. */ 1134 if (m->m_flags & M_VLANTAG) 1135 tfc |= (TFD_VLANTagInsert | TFD_VID(m->m_pkthdr.ether_vtag)); 1136 tfd->tfd_control = htole64(tfc); 1137 1138 /* Update Tx Queue. */ 1139 STAILQ_REMOVE_HEAD(&sc->sc_cdata.stge_txfreeq, tx_q); 1140 STAILQ_INSERT_TAIL(&sc->sc_cdata.stge_txbusyq, txd, tx_q); 1141 txd->tx_m = m; 1142 1143 /* Sync descriptors. */ 1144 bus_dmamap_sync(sc->sc_cdata.stge_tx_tag, txd->tx_dmamap, 1145 BUS_DMASYNC_PREWRITE); 1146 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag, 1147 sc->sc_cdata.stge_tx_ring_map, 1148 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1149 1150 return (0); 1151 } 1152 1153 /* 1154 * stge_start: [ifnet interface function] 1155 * 1156 * Start packet transmission on the interface. 1157 */ 1158 static void 1159 stge_start(struct ifnet *ifp) 1160 { 1161 struct stge_softc *sc; 1162 1163 sc = ifp->if_softc; 1164 STGE_LOCK(sc); 1165 stge_start_locked(ifp); 1166 STGE_UNLOCK(sc); 1167 } 1168 1169 static void 1170 stge_start_locked(struct ifnet *ifp) 1171 { 1172 struct stge_softc *sc; 1173 struct mbuf *m_head; 1174 int enq; 1175 1176 sc = ifp->if_softc; 1177 1178 STGE_LOCK_ASSERT(sc); 1179 1180 if ((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) != 1181 IFF_DRV_RUNNING || sc->sc_link == 0) 1182 return; 1183 1184 for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) { 1185 if (sc->sc_cdata.stge_tx_cnt >= STGE_TX_HIWAT) { 1186 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1187 break; 1188 } 1189 1190 IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); 1191 if (m_head == NULL) 1192 break; 1193 /* 1194 * Pack the data into the transmit ring. If we 1195 * don't have room, set the OACTIVE flag and wait 1196 * for the NIC to drain the ring. 1197 */ 1198 if (stge_encap(sc, &m_head)) { 1199 if (m_head == NULL) 1200 break; 1201 IFQ_DRV_PREPEND(&ifp->if_snd, m_head); 1202 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1203 break; 1204 } 1205 1206 enq++; 1207 /* 1208 * If there's a BPF listener, bounce a copy of this frame 1209 * to him. 1210 */ 1211 ETHER_BPF_MTAP(ifp, m_head); 1212 } 1213 1214 if (enq > 0) { 1215 /* Transmit */ 1216 CSR_WRITE_4(sc, STGE_DMACtrl, DMAC_TxDMAPollNow); 1217 1218 /* Set a timeout in case the chip goes out to lunch. */ 1219 sc->sc_watchdog_timer = 5; 1220 } 1221 } 1222 1223 /* 1224 * stge_watchdog: 1225 * 1226 * Watchdog timer handler. 1227 */ 1228 static void 1229 stge_watchdog(struct stge_softc *sc) 1230 { 1231 struct ifnet *ifp; 1232 1233 STGE_LOCK_ASSERT(sc); 1234 1235 if (sc->sc_watchdog_timer == 0 || --sc->sc_watchdog_timer) 1236 return; 1237 1238 ifp = sc->sc_ifp; 1239 if_printf(sc->sc_ifp, "device timeout\n"); 1240 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1241 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1242 stge_init_locked(sc); 1243 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1244 stge_start_locked(ifp); 1245 } 1246 1247 /* 1248 * stge_ioctl: [ifnet interface function] 1249 * 1250 * Handle control requests from the operator. 1251 */ 1252 static int 1253 stge_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1254 { 1255 struct stge_softc *sc; 1256 struct ifreq *ifr; 1257 struct mii_data *mii; 1258 int error, mask; 1259 1260 sc = ifp->if_softc; 1261 ifr = (struct ifreq *)data; 1262 error = 0; 1263 switch (cmd) { 1264 case SIOCSIFMTU: 1265 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > STGE_JUMBO_MTU) 1266 error = EINVAL; 1267 else if (ifp->if_mtu != ifr->ifr_mtu) { 1268 ifp->if_mtu = ifr->ifr_mtu; 1269 STGE_LOCK(sc); 1270 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 1271 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1272 stge_init_locked(sc); 1273 } 1274 STGE_UNLOCK(sc); 1275 } 1276 break; 1277 case SIOCSIFFLAGS: 1278 STGE_LOCK(sc); 1279 if ((ifp->if_flags & IFF_UP) != 0) { 1280 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 1281 if (((ifp->if_flags ^ sc->sc_if_flags) 1282 & IFF_PROMISC) != 0) 1283 stge_set_filter(sc); 1284 } else { 1285 if (sc->sc_detach == 0) 1286 stge_init_locked(sc); 1287 } 1288 } else { 1289 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 1290 stge_stop(sc); 1291 } 1292 sc->sc_if_flags = ifp->if_flags; 1293 STGE_UNLOCK(sc); 1294 break; 1295 case SIOCADDMULTI: 1296 case SIOCDELMULTI: 1297 STGE_LOCK(sc); 1298 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 1299 stge_set_multi(sc); 1300 STGE_UNLOCK(sc); 1301 break; 1302 case SIOCSIFMEDIA: 1303 case SIOCGIFMEDIA: 1304 mii = device_get_softc(sc->sc_miibus); 1305 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd); 1306 break; 1307 case SIOCSIFCAP: 1308 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 1309 #ifdef DEVICE_POLLING 1310 if ((mask & IFCAP_POLLING) != 0) { 1311 if ((ifr->ifr_reqcap & IFCAP_POLLING) != 0) { 1312 error = ether_poll_register(stge_poll, ifp); 1313 if (error != 0) 1314 break; 1315 STGE_LOCK(sc); 1316 CSR_WRITE_2(sc, STGE_IntEnable, 0); 1317 ifp->if_capenable |= IFCAP_POLLING; 1318 STGE_UNLOCK(sc); 1319 } else { 1320 error = ether_poll_deregister(ifp); 1321 if (error != 0) 1322 break; 1323 STGE_LOCK(sc); 1324 CSR_WRITE_2(sc, STGE_IntEnable, 1325 sc->sc_IntEnable); 1326 ifp->if_capenable &= ~IFCAP_POLLING; 1327 STGE_UNLOCK(sc); 1328 } 1329 } 1330 #endif 1331 if ((mask & IFCAP_HWCSUM) != 0) { 1332 ifp->if_capenable ^= IFCAP_HWCSUM; 1333 if ((IFCAP_HWCSUM & ifp->if_capenable) != 0 && 1334 (IFCAP_HWCSUM & ifp->if_capabilities) != 0) 1335 ifp->if_hwassist = STGE_CSUM_FEATURES; 1336 else 1337 ifp->if_hwassist = 0; 1338 } 1339 if ((mask & IFCAP_WOL) != 0 && 1340 (ifp->if_capabilities & IFCAP_WOL) != 0) { 1341 if ((mask & IFCAP_WOL_MAGIC) != 0) 1342 ifp->if_capenable ^= IFCAP_WOL_MAGIC; 1343 } 1344 if ((mask & IFCAP_VLAN_HWTAGGING) != 0) { 1345 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; 1346 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { 1347 STGE_LOCK(sc); 1348 stge_vlan_setup(sc); 1349 STGE_UNLOCK(sc); 1350 } 1351 } 1352 VLAN_CAPABILITIES(ifp); 1353 break; 1354 default: 1355 error = ether_ioctl(ifp, cmd, data); 1356 break; 1357 } 1358 1359 return (error); 1360 } 1361 1362 static void 1363 stge_link_task(void *arg, int pending) 1364 { 1365 struct stge_softc *sc; 1366 struct mii_data *mii; 1367 uint32_t v, ac; 1368 int i; 1369 1370 sc = (struct stge_softc *)arg; 1371 STGE_LOCK(sc); 1372 1373 mii = device_get_softc(sc->sc_miibus); 1374 if (mii->mii_media_status & IFM_ACTIVE) { 1375 if (IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) 1376 sc->sc_link = 1; 1377 } else 1378 sc->sc_link = 0; 1379 1380 sc->sc_MACCtrl = 0; 1381 if (((mii->mii_media_active & IFM_GMASK) & IFM_FDX) != 0) 1382 sc->sc_MACCtrl |= MC_DuplexSelect; 1383 if (((mii->mii_media_active & IFM_GMASK) & IFM_ETH_RXPAUSE) != 0) 1384 sc->sc_MACCtrl |= MC_RxFlowControlEnable; 1385 if (((mii->mii_media_active & IFM_GMASK) & IFM_ETH_TXPAUSE) != 0) 1386 sc->sc_MACCtrl |= MC_TxFlowControlEnable; 1387 /* 1388 * Update STGE_MACCtrl register depending on link status. 1389 * (duplex, flow control etc) 1390 */ 1391 v = ac = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 1392 v &= ~(MC_DuplexSelect|MC_RxFlowControlEnable|MC_TxFlowControlEnable); 1393 v |= sc->sc_MACCtrl; 1394 CSR_WRITE_4(sc, STGE_MACCtrl, v); 1395 if (((ac ^ sc->sc_MACCtrl) & MC_DuplexSelect) != 0) { 1396 /* Duplex setting changed, reset Tx/Rx functions. */ 1397 ac = CSR_READ_4(sc, STGE_AsicCtrl); 1398 ac |= AC_TxReset | AC_RxReset; 1399 CSR_WRITE_4(sc, STGE_AsicCtrl, ac); 1400 for (i = 0; i < STGE_TIMEOUT; i++) { 1401 DELAY(100); 1402 if ((CSR_READ_4(sc, STGE_AsicCtrl) & AC_ResetBusy) == 0) 1403 break; 1404 } 1405 if (i == STGE_TIMEOUT) 1406 device_printf(sc->sc_dev, "reset failed to complete\n"); 1407 } 1408 STGE_UNLOCK(sc); 1409 } 1410 1411 static __inline int 1412 stge_tx_error(struct stge_softc *sc) 1413 { 1414 uint32_t txstat; 1415 int error; 1416 1417 for (error = 0;;) { 1418 txstat = CSR_READ_4(sc, STGE_TxStatus); 1419 if ((txstat & TS_TxComplete) == 0) 1420 break; 1421 /* Tx underrun */ 1422 if ((txstat & TS_TxUnderrun) != 0) { 1423 /* 1424 * XXX 1425 * There should be a more better way to recover 1426 * from Tx underrun instead of a full reset. 1427 */ 1428 if (sc->sc_nerr++ < STGE_MAXERR) 1429 device_printf(sc->sc_dev, "Tx underrun, " 1430 "resetting...\n"); 1431 if (sc->sc_nerr == STGE_MAXERR) 1432 device_printf(sc->sc_dev, "too many errors; " 1433 "not reporting any more\n"); 1434 error = -1; 1435 break; 1436 } 1437 /* Maximum/Late collisions, Re-enable Tx MAC. */ 1438 if ((txstat & (TS_MaxCollisions|TS_LateCollision)) != 0) 1439 CSR_WRITE_4(sc, STGE_MACCtrl, 1440 (CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK) | 1441 MC_TxEnable); 1442 } 1443 1444 return (error); 1445 } 1446 1447 /* 1448 * stge_intr: 1449 * 1450 * Interrupt service routine. 1451 */ 1452 static void 1453 stge_intr(void *arg) 1454 { 1455 struct stge_softc *sc; 1456 struct ifnet *ifp; 1457 int reinit; 1458 uint16_t status; 1459 1460 sc = (struct stge_softc *)arg; 1461 ifp = sc->sc_ifp; 1462 1463 STGE_LOCK(sc); 1464 1465 #ifdef DEVICE_POLLING 1466 if ((ifp->if_capenable & IFCAP_POLLING) != 0) 1467 goto done_locked; 1468 #endif 1469 status = CSR_READ_2(sc, STGE_IntStatus); 1470 if (sc->sc_suspended || (status & IS_InterruptStatus) == 0) 1471 goto done_locked; 1472 1473 /* Disable interrupts. */ 1474 for (reinit = 0;;) { 1475 status = CSR_READ_2(sc, STGE_IntStatusAck); 1476 status &= sc->sc_IntEnable; 1477 if (status == 0) 1478 break; 1479 /* Host interface errors. */ 1480 if ((status & IS_HostError) != 0) { 1481 device_printf(sc->sc_dev, 1482 "Host interface error, resetting...\n"); 1483 reinit = 1; 1484 goto force_init; 1485 } 1486 1487 /* Receive interrupts. */ 1488 if ((status & IS_RxDMAComplete) != 0) { 1489 stge_rxeof(sc); 1490 if ((status & IS_RFDListEnd) != 0) 1491 CSR_WRITE_4(sc, STGE_DMACtrl, 1492 DMAC_RxDMAPollNow); 1493 } 1494 1495 /* Transmit interrupts. */ 1496 if ((status & (IS_TxDMAComplete | IS_TxComplete)) != 0) 1497 stge_txeof(sc); 1498 1499 /* Transmission errors.*/ 1500 if ((status & IS_TxComplete) != 0) { 1501 if ((reinit = stge_tx_error(sc)) != 0) 1502 break; 1503 } 1504 } 1505 1506 force_init: 1507 if (reinit != 0) { 1508 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1509 stge_init_locked(sc); 1510 } 1511 1512 /* Re-enable interrupts. */ 1513 CSR_WRITE_2(sc, STGE_IntEnable, sc->sc_IntEnable); 1514 1515 /* Try to get more packets going. */ 1516 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1517 stge_start_locked(ifp); 1518 1519 done_locked: 1520 STGE_UNLOCK(sc); 1521 } 1522 1523 /* 1524 * stge_txeof: 1525 * 1526 * Helper; handle transmit interrupts. 1527 */ 1528 static void 1529 stge_txeof(struct stge_softc *sc) 1530 { 1531 struct ifnet *ifp; 1532 struct stge_txdesc *txd; 1533 uint64_t control; 1534 int cons; 1535 1536 STGE_LOCK_ASSERT(sc); 1537 1538 ifp = sc->sc_ifp; 1539 1540 txd = STAILQ_FIRST(&sc->sc_cdata.stge_txbusyq); 1541 if (txd == NULL) 1542 return; 1543 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag, 1544 sc->sc_cdata.stge_tx_ring_map, BUS_DMASYNC_POSTREAD); 1545 1546 /* 1547 * Go through our Tx list and free mbufs for those 1548 * frames which have been transmitted. 1549 */ 1550 for (cons = sc->sc_cdata.stge_tx_cons;; 1551 cons = (cons + 1) % STGE_TX_RING_CNT) { 1552 if (sc->sc_cdata.stge_tx_cnt <= 0) 1553 break; 1554 control = le64toh(sc->sc_rdata.stge_tx_ring[cons].tfd_control); 1555 if ((control & TFD_TFDDone) == 0) 1556 break; 1557 sc->sc_cdata.stge_tx_cnt--; 1558 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1559 1560 bus_dmamap_sync(sc->sc_cdata.stge_tx_tag, txd->tx_dmamap, 1561 BUS_DMASYNC_POSTWRITE); 1562 bus_dmamap_unload(sc->sc_cdata.stge_tx_tag, txd->tx_dmamap); 1563 1564 /* Output counter is updated with statistics register */ 1565 m_freem(txd->tx_m); 1566 txd->tx_m = NULL; 1567 STAILQ_REMOVE_HEAD(&sc->sc_cdata.stge_txbusyq, tx_q); 1568 STAILQ_INSERT_TAIL(&sc->sc_cdata.stge_txfreeq, txd, tx_q); 1569 txd = STAILQ_FIRST(&sc->sc_cdata.stge_txbusyq); 1570 } 1571 sc->sc_cdata.stge_tx_cons = cons; 1572 if (sc->sc_cdata.stge_tx_cnt == 0) 1573 sc->sc_watchdog_timer = 0; 1574 1575 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag, 1576 sc->sc_cdata.stge_tx_ring_map, 1577 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1578 } 1579 1580 static __inline void 1581 stge_discard_rxbuf(struct stge_softc *sc, int idx) 1582 { 1583 struct stge_rfd *rfd; 1584 1585 rfd = &sc->sc_rdata.stge_rx_ring[idx]; 1586 rfd->rfd_status = 0; 1587 } 1588 1589 #ifndef __NO_STRICT_ALIGNMENT 1590 /* 1591 * It seems that TC9021's DMA engine has alignment restrictions in 1592 * DMA scatter operations. The first DMA segment has no address 1593 * alignment restrictins but the rest should be aligned on 4(?) bytes 1594 * boundary. Otherwise it would corrupt random memory. Since we don't 1595 * know which one is used for the first segment in advance we simply 1596 * don't align at all. 1597 * To avoid copying over an entire frame to align, we allocate a new 1598 * mbuf and copy ethernet header to the new mbuf. The new mbuf is 1599 * prepended into the existing mbuf chain. 1600 */ 1601 static __inline struct mbuf * 1602 stge_fixup_rx(struct stge_softc *sc, struct mbuf *m) 1603 { 1604 struct mbuf *n; 1605 1606 n = NULL; 1607 if (m->m_len <= (MCLBYTES - ETHER_HDR_LEN)) { 1608 bcopy(m->m_data, m->m_data + ETHER_HDR_LEN, m->m_len); 1609 m->m_data += ETHER_HDR_LEN; 1610 n = m; 1611 } else { 1612 MGETHDR(n, M_NOWAIT, MT_DATA); 1613 if (n != NULL) { 1614 bcopy(m->m_data, n->m_data, ETHER_HDR_LEN); 1615 m->m_data += ETHER_HDR_LEN; 1616 m->m_len -= ETHER_HDR_LEN; 1617 n->m_len = ETHER_HDR_LEN; 1618 M_MOVE_PKTHDR(n, m); 1619 n->m_next = m; 1620 } else 1621 m_freem(m); 1622 } 1623 1624 return (n); 1625 } 1626 #endif 1627 1628 /* 1629 * stge_rxeof: 1630 * 1631 * Helper; handle receive interrupts. 1632 */ 1633 static int 1634 stge_rxeof(struct stge_softc *sc) 1635 { 1636 struct ifnet *ifp; 1637 struct stge_rxdesc *rxd; 1638 struct mbuf *mp, *m; 1639 uint64_t status64; 1640 uint32_t status; 1641 int cons, prog, rx_npkts; 1642 1643 STGE_LOCK_ASSERT(sc); 1644 1645 rx_npkts = 0; 1646 ifp = sc->sc_ifp; 1647 1648 bus_dmamap_sync(sc->sc_cdata.stge_rx_ring_tag, 1649 sc->sc_cdata.stge_rx_ring_map, BUS_DMASYNC_POSTREAD); 1650 1651 prog = 0; 1652 for (cons = sc->sc_cdata.stge_rx_cons; prog < STGE_RX_RING_CNT; 1653 prog++, cons = (cons + 1) % STGE_RX_RING_CNT) { 1654 status64 = le64toh(sc->sc_rdata.stge_rx_ring[cons].rfd_status); 1655 status = RFD_RxStatus(status64); 1656 if ((status & RFD_RFDDone) == 0) 1657 break; 1658 #ifdef DEVICE_POLLING 1659 if (ifp->if_capenable & IFCAP_POLLING) { 1660 if (sc->sc_cdata.stge_rxcycles <= 0) 1661 break; 1662 sc->sc_cdata.stge_rxcycles--; 1663 } 1664 #endif 1665 prog++; 1666 rxd = &sc->sc_cdata.stge_rxdesc[cons]; 1667 mp = rxd->rx_m; 1668 1669 /* 1670 * If the packet had an error, drop it. Note we count 1671 * the error later in the periodic stats update. 1672 */ 1673 if ((status & RFD_FrameEnd) != 0 && (status & 1674 (RFD_RxFIFOOverrun | RFD_RxRuntFrame | 1675 RFD_RxAlignmentError | RFD_RxFCSError | 1676 RFD_RxLengthError)) != 0) { 1677 stge_discard_rxbuf(sc, cons); 1678 if (sc->sc_cdata.stge_rxhead != NULL) { 1679 m_freem(sc->sc_cdata.stge_rxhead); 1680 STGE_RXCHAIN_RESET(sc); 1681 } 1682 continue; 1683 } 1684 /* 1685 * Add a new receive buffer to the ring. 1686 */ 1687 if (stge_newbuf(sc, cons) != 0) { 1688 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 1689 stge_discard_rxbuf(sc, cons); 1690 if (sc->sc_cdata.stge_rxhead != NULL) { 1691 m_freem(sc->sc_cdata.stge_rxhead); 1692 STGE_RXCHAIN_RESET(sc); 1693 } 1694 continue; 1695 } 1696 1697 if ((status & RFD_FrameEnd) != 0) 1698 mp->m_len = RFD_RxDMAFrameLen(status) - 1699 sc->sc_cdata.stge_rxlen; 1700 sc->sc_cdata.stge_rxlen += mp->m_len; 1701 1702 /* Chain mbufs. */ 1703 if (sc->sc_cdata.stge_rxhead == NULL) { 1704 sc->sc_cdata.stge_rxhead = mp; 1705 sc->sc_cdata.stge_rxtail = mp; 1706 } else { 1707 mp->m_flags &= ~M_PKTHDR; 1708 sc->sc_cdata.stge_rxtail->m_next = mp; 1709 sc->sc_cdata.stge_rxtail = mp; 1710 } 1711 1712 if ((status & RFD_FrameEnd) != 0) { 1713 m = sc->sc_cdata.stge_rxhead; 1714 m->m_pkthdr.rcvif = ifp; 1715 m->m_pkthdr.len = sc->sc_cdata.stge_rxlen; 1716 1717 if (m->m_pkthdr.len > sc->sc_if_framesize) { 1718 m_freem(m); 1719 STGE_RXCHAIN_RESET(sc); 1720 continue; 1721 } 1722 /* 1723 * Set the incoming checksum information for 1724 * the packet. 1725 */ 1726 if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) { 1727 if ((status & RFD_IPDetected) != 0) { 1728 m->m_pkthdr.csum_flags |= 1729 CSUM_IP_CHECKED; 1730 if ((status & RFD_IPError) == 0) 1731 m->m_pkthdr.csum_flags |= 1732 CSUM_IP_VALID; 1733 } 1734 if (((status & RFD_TCPDetected) != 0 && 1735 (status & RFD_TCPError) == 0) || 1736 ((status & RFD_UDPDetected) != 0 && 1737 (status & RFD_UDPError) == 0)) { 1738 m->m_pkthdr.csum_flags |= 1739 (CSUM_DATA_VALID | CSUM_PSEUDO_HDR); 1740 m->m_pkthdr.csum_data = 0xffff; 1741 } 1742 } 1743 1744 #ifndef __NO_STRICT_ALIGNMENT 1745 if (sc->sc_if_framesize > (MCLBYTES - ETHER_ALIGN)) { 1746 if ((m = stge_fixup_rx(sc, m)) == NULL) { 1747 STGE_RXCHAIN_RESET(sc); 1748 continue; 1749 } 1750 } 1751 #endif 1752 /* Check for VLAN tagged packets. */ 1753 if ((status & RFD_VLANDetected) != 0 && 1754 (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0) { 1755 m->m_pkthdr.ether_vtag = RFD_TCI(status64); 1756 m->m_flags |= M_VLANTAG; 1757 } 1758 1759 STGE_UNLOCK(sc); 1760 /* Pass it on. */ 1761 (*ifp->if_input)(ifp, m); 1762 STGE_LOCK(sc); 1763 rx_npkts++; 1764 1765 STGE_RXCHAIN_RESET(sc); 1766 } 1767 } 1768 1769 if (prog > 0) { 1770 /* Update the consumer index. */ 1771 sc->sc_cdata.stge_rx_cons = cons; 1772 bus_dmamap_sync(sc->sc_cdata.stge_rx_ring_tag, 1773 sc->sc_cdata.stge_rx_ring_map, 1774 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 1775 } 1776 return (rx_npkts); 1777 } 1778 1779 #ifdef DEVICE_POLLING 1780 static int 1781 stge_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 1782 { 1783 struct stge_softc *sc; 1784 uint16_t status; 1785 int rx_npkts; 1786 1787 rx_npkts = 0; 1788 sc = ifp->if_softc; 1789 STGE_LOCK(sc); 1790 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { 1791 STGE_UNLOCK(sc); 1792 return (rx_npkts); 1793 } 1794 1795 sc->sc_cdata.stge_rxcycles = count; 1796 rx_npkts = stge_rxeof(sc); 1797 stge_txeof(sc); 1798 1799 if (cmd == POLL_AND_CHECK_STATUS) { 1800 status = CSR_READ_2(sc, STGE_IntStatus); 1801 status &= sc->sc_IntEnable; 1802 if (status != 0) { 1803 if ((status & IS_HostError) != 0) { 1804 device_printf(sc->sc_dev, 1805 "Host interface error, resetting...\n"); 1806 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1807 stge_init_locked(sc); 1808 } 1809 if ((status & IS_TxComplete) != 0) { 1810 if (stge_tx_error(sc) != 0) { 1811 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1812 stge_init_locked(sc); 1813 } 1814 } 1815 } 1816 1817 } 1818 1819 if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) 1820 stge_start_locked(ifp); 1821 1822 STGE_UNLOCK(sc); 1823 return (rx_npkts); 1824 } 1825 #endif /* DEVICE_POLLING */ 1826 1827 /* 1828 * stge_tick: 1829 * 1830 * One second timer, used to tick the MII. 1831 */ 1832 static void 1833 stge_tick(void *arg) 1834 { 1835 struct stge_softc *sc; 1836 struct mii_data *mii; 1837 1838 sc = (struct stge_softc *)arg; 1839 1840 STGE_LOCK_ASSERT(sc); 1841 1842 mii = device_get_softc(sc->sc_miibus); 1843 mii_tick(mii); 1844 1845 /* Update statistics counters. */ 1846 stge_stats_update(sc); 1847 1848 /* 1849 * Relcaim any pending Tx descriptors to release mbufs in a 1850 * timely manner as we don't generate Tx completion interrupts 1851 * for every frame. This limits the delay to a maximum of one 1852 * second. 1853 */ 1854 if (sc->sc_cdata.stge_tx_cnt != 0) 1855 stge_txeof(sc); 1856 1857 stge_watchdog(sc); 1858 1859 callout_reset(&sc->sc_tick_ch, hz, stge_tick, sc); 1860 } 1861 1862 /* 1863 * stge_stats_update: 1864 * 1865 * Read the TC9021 statistics counters. 1866 */ 1867 static void 1868 stge_stats_update(struct stge_softc *sc) 1869 { 1870 struct ifnet *ifp; 1871 1872 STGE_LOCK_ASSERT(sc); 1873 1874 ifp = sc->sc_ifp; 1875 1876 CSR_READ_4(sc,STGE_OctetRcvOk); 1877 1878 if_inc_counter(ifp, IFCOUNTER_IPACKETS, CSR_READ_4(sc, STGE_FramesRcvdOk)); 1879 1880 if_inc_counter(ifp, IFCOUNTER_IERRORS, CSR_READ_2(sc, STGE_FramesLostRxErrors)); 1881 1882 CSR_READ_4(sc, STGE_OctetXmtdOk); 1883 1884 if_inc_counter(ifp, IFCOUNTER_OPACKETS, CSR_READ_4(sc, STGE_FramesXmtdOk)); 1885 1886 if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1887 CSR_READ_4(sc, STGE_LateCollisions) + 1888 CSR_READ_4(sc, STGE_MultiColFrames) + 1889 CSR_READ_4(sc, STGE_SingleColFrames)); 1890 1891 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1892 CSR_READ_2(sc, STGE_FramesAbortXSColls) + 1893 CSR_READ_2(sc, STGE_FramesWEXDeferal)); 1894 } 1895 1896 /* 1897 * stge_reset: 1898 * 1899 * Perform a soft reset on the TC9021. 1900 */ 1901 static void 1902 stge_reset(struct stge_softc *sc, uint32_t how) 1903 { 1904 uint32_t ac; 1905 uint8_t v; 1906 int i, dv; 1907 1908 STGE_LOCK_ASSERT(sc); 1909 1910 dv = 5000; 1911 ac = CSR_READ_4(sc, STGE_AsicCtrl); 1912 switch (how) { 1913 case STGE_RESET_TX: 1914 ac |= AC_TxReset | AC_FIFO; 1915 dv = 100; 1916 break; 1917 case STGE_RESET_RX: 1918 ac |= AC_RxReset | AC_FIFO; 1919 dv = 100; 1920 break; 1921 case STGE_RESET_FULL: 1922 default: 1923 /* 1924 * Only assert RstOut if we're fiber. We need GMII clocks 1925 * to be present in order for the reset to complete on fiber 1926 * cards. 1927 */ 1928 ac |= AC_GlobalReset | AC_RxReset | AC_TxReset | 1929 AC_DMA | AC_FIFO | AC_Network | AC_Host | AC_AutoInit | 1930 (sc->sc_usefiber ? AC_RstOut : 0); 1931 break; 1932 } 1933 1934 CSR_WRITE_4(sc, STGE_AsicCtrl, ac); 1935 1936 /* Account for reset problem at 10Mbps. */ 1937 DELAY(dv); 1938 1939 for (i = 0; i < STGE_TIMEOUT; i++) { 1940 if ((CSR_READ_4(sc, STGE_AsicCtrl) & AC_ResetBusy) == 0) 1941 break; 1942 DELAY(dv); 1943 } 1944 1945 if (i == STGE_TIMEOUT) 1946 device_printf(sc->sc_dev, "reset failed to complete\n"); 1947 1948 /* Set LED, from Linux IPG driver. */ 1949 ac = CSR_READ_4(sc, STGE_AsicCtrl); 1950 ac &= ~(AC_LEDMode | AC_LEDSpeed | AC_LEDModeBit1); 1951 if ((sc->sc_led & 0x01) != 0) 1952 ac |= AC_LEDMode; 1953 if ((sc->sc_led & 0x03) != 0) 1954 ac |= AC_LEDModeBit1; 1955 if ((sc->sc_led & 0x08) != 0) 1956 ac |= AC_LEDSpeed; 1957 CSR_WRITE_4(sc, STGE_AsicCtrl, ac); 1958 1959 /* Set PHY, from Linux IPG driver */ 1960 v = CSR_READ_1(sc, STGE_PhySet); 1961 v &= ~(PS_MemLenb9b | PS_MemLen | PS_NonCompdet); 1962 v |= ((sc->sc_led & 0x70) >> 4); 1963 CSR_WRITE_1(sc, STGE_PhySet, v); 1964 } 1965 1966 /* 1967 * stge_init: [ ifnet interface function ] 1968 * 1969 * Initialize the interface. 1970 */ 1971 static void 1972 stge_init(void *xsc) 1973 { 1974 struct stge_softc *sc; 1975 1976 sc = (struct stge_softc *)xsc; 1977 STGE_LOCK(sc); 1978 stge_init_locked(sc); 1979 STGE_UNLOCK(sc); 1980 } 1981 1982 static void 1983 stge_init_locked(struct stge_softc *sc) 1984 { 1985 struct ifnet *ifp; 1986 struct mii_data *mii; 1987 uint16_t eaddr[3]; 1988 uint32_t v; 1989 int error; 1990 1991 STGE_LOCK_ASSERT(sc); 1992 1993 ifp = sc->sc_ifp; 1994 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 1995 return; 1996 mii = device_get_softc(sc->sc_miibus); 1997 1998 /* 1999 * Cancel any pending I/O. 2000 */ 2001 stge_stop(sc); 2002 2003 /* 2004 * Reset the chip to a known state. 2005 */ 2006 stge_reset(sc, STGE_RESET_FULL); 2007 2008 /* Init descriptors. */ 2009 error = stge_init_rx_ring(sc); 2010 if (error != 0) { 2011 device_printf(sc->sc_dev, 2012 "initialization failed: no memory for rx buffers\n"); 2013 stge_stop(sc); 2014 goto out; 2015 } 2016 stge_init_tx_ring(sc); 2017 2018 /* Set the station address. */ 2019 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN); 2020 CSR_WRITE_2(sc, STGE_StationAddress0, htole16(eaddr[0])); 2021 CSR_WRITE_2(sc, STGE_StationAddress1, htole16(eaddr[1])); 2022 CSR_WRITE_2(sc, STGE_StationAddress2, htole16(eaddr[2])); 2023 2024 /* 2025 * Set the statistics masks. Disable all the RMON stats, 2026 * and disable selected stats in the non-RMON stats registers. 2027 */ 2028 CSR_WRITE_4(sc, STGE_RMONStatisticsMask, 0xffffffff); 2029 CSR_WRITE_4(sc, STGE_StatisticsMask, 2030 (1U << 1) | (1U << 2) | (1U << 3) | (1U << 4) | (1U << 5) | 2031 (1U << 6) | (1U << 7) | (1U << 8) | (1U << 9) | (1U << 10) | 2032 (1U << 13) | (1U << 14) | (1U << 15) | (1U << 19) | (1U << 20) | 2033 (1U << 21)); 2034 2035 /* Set up the receive filter. */ 2036 stge_set_filter(sc); 2037 /* Program multicast filter. */ 2038 stge_set_multi(sc); 2039 2040 /* 2041 * Give the transmit and receive ring to the chip. 2042 */ 2043 CSR_WRITE_4(sc, STGE_TFDListPtrHi, 2044 STGE_ADDR_HI(STGE_TX_RING_ADDR(sc, 0))); 2045 CSR_WRITE_4(sc, STGE_TFDListPtrLo, 2046 STGE_ADDR_LO(STGE_TX_RING_ADDR(sc, 0))); 2047 2048 CSR_WRITE_4(sc, STGE_RFDListPtrHi, 2049 STGE_ADDR_HI(STGE_RX_RING_ADDR(sc, 0))); 2050 CSR_WRITE_4(sc, STGE_RFDListPtrLo, 2051 STGE_ADDR_LO(STGE_RX_RING_ADDR(sc, 0))); 2052 2053 /* 2054 * Initialize the Tx auto-poll period. It's OK to make this number 2055 * large (255 is the max, but we use 127) -- we explicitly kick the 2056 * transmit engine when there's actually a packet. 2057 */ 2058 CSR_WRITE_1(sc, STGE_TxDMAPollPeriod, 127); 2059 2060 /* ..and the Rx auto-poll period. */ 2061 CSR_WRITE_1(sc, STGE_RxDMAPollPeriod, 1); 2062 2063 /* Initialize the Tx start threshold. */ 2064 CSR_WRITE_2(sc, STGE_TxStartThresh, sc->sc_txthresh); 2065 2066 /* Rx DMA thresholds, from Linux */ 2067 CSR_WRITE_1(sc, STGE_RxDMABurstThresh, 0x30); 2068 CSR_WRITE_1(sc, STGE_RxDMAUrgentThresh, 0x30); 2069 2070 /* Rx early threhold, from Linux */ 2071 CSR_WRITE_2(sc, STGE_RxEarlyThresh, 0x7ff); 2072 2073 /* Tx DMA thresholds, from Linux */ 2074 CSR_WRITE_1(sc, STGE_TxDMABurstThresh, 0x30); 2075 CSR_WRITE_1(sc, STGE_TxDMAUrgentThresh, 0x04); 2076 2077 /* 2078 * Initialize the Rx DMA interrupt control register. We 2079 * request an interrupt after every incoming packet, but 2080 * defer it for sc_rxint_dmawait us. When the number of 2081 * interrupts pending reaches STGE_RXINT_NFRAME, we stop 2082 * deferring the interrupt, and signal it immediately. 2083 */ 2084 CSR_WRITE_4(sc, STGE_RxDMAIntCtrl, 2085 RDIC_RxFrameCount(sc->sc_rxint_nframe) | 2086 RDIC_RxDMAWaitTime(STGE_RXINT_USECS2TICK(sc->sc_rxint_dmawait))); 2087 2088 /* 2089 * Initialize the interrupt mask. 2090 */ 2091 sc->sc_IntEnable = IS_HostError | IS_TxComplete | 2092 IS_TxDMAComplete | IS_RxDMAComplete | IS_RFDListEnd; 2093 #ifdef DEVICE_POLLING 2094 /* Disable interrupts if we are polling. */ 2095 if ((ifp->if_capenable & IFCAP_POLLING) != 0) 2096 CSR_WRITE_2(sc, STGE_IntEnable, 0); 2097 else 2098 #endif 2099 CSR_WRITE_2(sc, STGE_IntEnable, sc->sc_IntEnable); 2100 2101 /* 2102 * Configure the DMA engine. 2103 * XXX Should auto-tune TxBurstLimit. 2104 */ 2105 CSR_WRITE_4(sc, STGE_DMACtrl, sc->sc_DMACtrl | DMAC_TxBurstLimit(3)); 2106 2107 /* 2108 * Send a PAUSE frame when we reach 29,696 bytes in the Rx 2109 * FIFO, and send an un-PAUSE frame when we reach 3056 bytes 2110 * in the Rx FIFO. 2111 */ 2112 CSR_WRITE_2(sc, STGE_FlowOnTresh, 29696 / 16); 2113 CSR_WRITE_2(sc, STGE_FlowOffThresh, 3056 / 16); 2114 2115 /* 2116 * Set the maximum frame size. 2117 */ 2118 sc->sc_if_framesize = ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN; 2119 CSR_WRITE_2(sc, STGE_MaxFrameSize, sc->sc_if_framesize); 2120 2121 /* 2122 * Initialize MacCtrl -- do it before setting the media, 2123 * as setting the media will actually program the register. 2124 * 2125 * Note: We have to poke the IFS value before poking 2126 * anything else. 2127 */ 2128 /* Tx/Rx MAC should be disabled before programming IFS.*/ 2129 CSR_WRITE_4(sc, STGE_MACCtrl, MC_IFSSelect(MC_IFS96bit)); 2130 2131 stge_vlan_setup(sc); 2132 2133 if (sc->sc_rev >= 6) { /* >= B.2 */ 2134 /* Multi-frag frame bug work-around. */ 2135 CSR_WRITE_2(sc, STGE_DebugCtrl, 2136 CSR_READ_2(sc, STGE_DebugCtrl) | 0x0200); 2137 2138 /* Tx Poll Now bug work-around. */ 2139 CSR_WRITE_2(sc, STGE_DebugCtrl, 2140 CSR_READ_2(sc, STGE_DebugCtrl) | 0x0010); 2141 /* Tx Poll Now bug work-around. */ 2142 CSR_WRITE_2(sc, STGE_DebugCtrl, 2143 CSR_READ_2(sc, STGE_DebugCtrl) | 0x0020); 2144 } 2145 2146 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2147 v |= MC_StatisticsEnable | MC_TxEnable | MC_RxEnable; 2148 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2149 /* 2150 * It seems that transmitting frames without checking the state of 2151 * Rx/Tx MAC wedge the hardware. 2152 */ 2153 stge_start_tx(sc); 2154 stge_start_rx(sc); 2155 2156 sc->sc_link = 0; 2157 /* 2158 * Set the current media. 2159 */ 2160 mii_mediachg(mii); 2161 2162 /* 2163 * Start the one second MII clock. 2164 */ 2165 callout_reset(&sc->sc_tick_ch, hz, stge_tick, sc); 2166 2167 /* 2168 * ...all done! 2169 */ 2170 ifp->if_drv_flags |= IFF_DRV_RUNNING; 2171 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 2172 2173 out: 2174 if (error != 0) 2175 device_printf(sc->sc_dev, "interface not running\n"); 2176 } 2177 2178 static void 2179 stge_vlan_setup(struct stge_softc *sc) 2180 { 2181 struct ifnet *ifp; 2182 uint32_t v; 2183 2184 ifp = sc->sc_ifp; 2185 /* 2186 * The NIC always copy a VLAN tag regardless of STGE_MACCtrl 2187 * MC_AutoVLANuntagging bit. 2188 * MC_AutoVLANtagging bit selects which VLAN source to use 2189 * between STGE_VLANTag and TFC. However TFC TFD_VLANTagInsert 2190 * bit has priority over MC_AutoVLANtagging bit. So we always 2191 * use TFC instead of STGE_VLANTag register. 2192 */ 2193 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2194 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0) 2195 v |= MC_AutoVLANuntagging; 2196 else 2197 v &= ~MC_AutoVLANuntagging; 2198 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2199 } 2200 2201 /* 2202 * Stop transmission on the interface. 2203 */ 2204 static void 2205 stge_stop(struct stge_softc *sc) 2206 { 2207 struct ifnet *ifp; 2208 struct stge_txdesc *txd; 2209 struct stge_rxdesc *rxd; 2210 uint32_t v; 2211 int i; 2212 2213 STGE_LOCK_ASSERT(sc); 2214 /* 2215 * Stop the one second clock. 2216 */ 2217 callout_stop(&sc->sc_tick_ch); 2218 sc->sc_watchdog_timer = 0; 2219 2220 /* 2221 * Disable interrupts. 2222 */ 2223 CSR_WRITE_2(sc, STGE_IntEnable, 0); 2224 2225 /* 2226 * Stop receiver, transmitter, and stats update. 2227 */ 2228 stge_stop_rx(sc); 2229 stge_stop_tx(sc); 2230 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2231 v |= MC_StatisticsDisable; 2232 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2233 2234 /* 2235 * Stop the transmit and receive DMA. 2236 */ 2237 stge_dma_wait(sc); 2238 CSR_WRITE_4(sc, STGE_TFDListPtrHi, 0); 2239 CSR_WRITE_4(sc, STGE_TFDListPtrLo, 0); 2240 CSR_WRITE_4(sc, STGE_RFDListPtrHi, 0); 2241 CSR_WRITE_4(sc, STGE_RFDListPtrLo, 0); 2242 2243 /* 2244 * Free RX and TX mbufs still in the queues. 2245 */ 2246 for (i = 0; i < STGE_RX_RING_CNT; i++) { 2247 rxd = &sc->sc_cdata.stge_rxdesc[i]; 2248 if (rxd->rx_m != NULL) { 2249 bus_dmamap_sync(sc->sc_cdata.stge_rx_tag, 2250 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); 2251 bus_dmamap_unload(sc->sc_cdata.stge_rx_tag, 2252 rxd->rx_dmamap); 2253 m_freem(rxd->rx_m); 2254 rxd->rx_m = NULL; 2255 } 2256 } 2257 for (i = 0; i < STGE_TX_RING_CNT; i++) { 2258 txd = &sc->sc_cdata.stge_txdesc[i]; 2259 if (txd->tx_m != NULL) { 2260 bus_dmamap_sync(sc->sc_cdata.stge_tx_tag, 2261 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); 2262 bus_dmamap_unload(sc->sc_cdata.stge_tx_tag, 2263 txd->tx_dmamap); 2264 m_freem(txd->tx_m); 2265 txd->tx_m = NULL; 2266 } 2267 } 2268 2269 /* 2270 * Mark the interface down and cancel the watchdog timer. 2271 */ 2272 ifp = sc->sc_ifp; 2273 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 2274 sc->sc_link = 0; 2275 } 2276 2277 static void 2278 stge_start_tx(struct stge_softc *sc) 2279 { 2280 uint32_t v; 2281 int i; 2282 2283 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2284 if ((v & MC_TxEnabled) != 0) 2285 return; 2286 v |= MC_TxEnable; 2287 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2288 CSR_WRITE_1(sc, STGE_TxDMAPollPeriod, 127); 2289 for (i = STGE_TIMEOUT; i > 0; i--) { 2290 DELAY(10); 2291 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2292 if ((v & MC_TxEnabled) != 0) 2293 break; 2294 } 2295 if (i == 0) 2296 device_printf(sc->sc_dev, "Starting Tx MAC timed out\n"); 2297 } 2298 2299 static void 2300 stge_start_rx(struct stge_softc *sc) 2301 { 2302 uint32_t v; 2303 int i; 2304 2305 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2306 if ((v & MC_RxEnabled) != 0) 2307 return; 2308 v |= MC_RxEnable; 2309 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2310 CSR_WRITE_1(sc, STGE_RxDMAPollPeriod, 1); 2311 for (i = STGE_TIMEOUT; i > 0; i--) { 2312 DELAY(10); 2313 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2314 if ((v & MC_RxEnabled) != 0) 2315 break; 2316 } 2317 if (i == 0) 2318 device_printf(sc->sc_dev, "Starting Rx MAC timed out\n"); 2319 } 2320 2321 static void 2322 stge_stop_tx(struct stge_softc *sc) 2323 { 2324 uint32_t v; 2325 int i; 2326 2327 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2328 if ((v & MC_TxEnabled) == 0) 2329 return; 2330 v |= MC_TxDisable; 2331 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2332 for (i = STGE_TIMEOUT; i > 0; i--) { 2333 DELAY(10); 2334 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2335 if ((v & MC_TxEnabled) == 0) 2336 break; 2337 } 2338 if (i == 0) 2339 device_printf(sc->sc_dev, "Stopping Tx MAC timed out\n"); 2340 } 2341 2342 static void 2343 stge_stop_rx(struct stge_softc *sc) 2344 { 2345 uint32_t v; 2346 int i; 2347 2348 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2349 if ((v & MC_RxEnabled) == 0) 2350 return; 2351 v |= MC_RxDisable; 2352 CSR_WRITE_4(sc, STGE_MACCtrl, v); 2353 for (i = STGE_TIMEOUT; i > 0; i--) { 2354 DELAY(10); 2355 v = CSR_READ_4(sc, STGE_MACCtrl) & MC_MASK; 2356 if ((v & MC_RxEnabled) == 0) 2357 break; 2358 } 2359 if (i == 0) 2360 device_printf(sc->sc_dev, "Stopping Rx MAC timed out\n"); 2361 } 2362 2363 static void 2364 stge_init_tx_ring(struct stge_softc *sc) 2365 { 2366 struct stge_ring_data *rd; 2367 struct stge_txdesc *txd; 2368 bus_addr_t addr; 2369 int i; 2370 2371 STAILQ_INIT(&sc->sc_cdata.stge_txfreeq); 2372 STAILQ_INIT(&sc->sc_cdata.stge_txbusyq); 2373 2374 sc->sc_cdata.stge_tx_prod = 0; 2375 sc->sc_cdata.stge_tx_cons = 0; 2376 sc->sc_cdata.stge_tx_cnt = 0; 2377 2378 rd = &sc->sc_rdata; 2379 bzero(rd->stge_tx_ring, STGE_TX_RING_SZ); 2380 for (i = 0; i < STGE_TX_RING_CNT; i++) { 2381 if (i == (STGE_TX_RING_CNT - 1)) 2382 addr = STGE_TX_RING_ADDR(sc, 0); 2383 else 2384 addr = STGE_TX_RING_ADDR(sc, i + 1); 2385 rd->stge_tx_ring[i].tfd_next = htole64(addr); 2386 rd->stge_tx_ring[i].tfd_control = htole64(TFD_TFDDone); 2387 txd = &sc->sc_cdata.stge_txdesc[i]; 2388 STAILQ_INSERT_TAIL(&sc->sc_cdata.stge_txfreeq, txd, tx_q); 2389 } 2390 2391 bus_dmamap_sync(sc->sc_cdata.stge_tx_ring_tag, 2392 sc->sc_cdata.stge_tx_ring_map, 2393 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2394 2395 } 2396 2397 static int 2398 stge_init_rx_ring(struct stge_softc *sc) 2399 { 2400 struct stge_ring_data *rd; 2401 bus_addr_t addr; 2402 int i; 2403 2404 sc->sc_cdata.stge_rx_cons = 0; 2405 STGE_RXCHAIN_RESET(sc); 2406 2407 rd = &sc->sc_rdata; 2408 bzero(rd->stge_rx_ring, STGE_RX_RING_SZ); 2409 for (i = 0; i < STGE_RX_RING_CNT; i++) { 2410 if (stge_newbuf(sc, i) != 0) 2411 return (ENOBUFS); 2412 if (i == (STGE_RX_RING_CNT - 1)) 2413 addr = STGE_RX_RING_ADDR(sc, 0); 2414 else 2415 addr = STGE_RX_RING_ADDR(sc, i + 1); 2416 rd->stge_rx_ring[i].rfd_next = htole64(addr); 2417 rd->stge_rx_ring[i].rfd_status = 0; 2418 } 2419 2420 bus_dmamap_sync(sc->sc_cdata.stge_rx_ring_tag, 2421 sc->sc_cdata.stge_rx_ring_map, 2422 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); 2423 2424 return (0); 2425 } 2426 2427 /* 2428 * stge_newbuf: 2429 * 2430 * Add a receive buffer to the indicated descriptor. 2431 */ 2432 static int 2433 stge_newbuf(struct stge_softc *sc, int idx) 2434 { 2435 struct stge_rxdesc *rxd; 2436 struct stge_rfd *rfd; 2437 struct mbuf *m; 2438 bus_dma_segment_t segs[1]; 2439 bus_dmamap_t map; 2440 int nsegs; 2441 2442 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 2443 if (m == NULL) 2444 return (ENOBUFS); 2445 m->m_len = m->m_pkthdr.len = MCLBYTES; 2446 /* 2447 * The hardware requires 4bytes aligned DMA address when JUMBO 2448 * frame is used. 2449 */ 2450 if (sc->sc_if_framesize <= (MCLBYTES - ETHER_ALIGN)) 2451 m_adj(m, ETHER_ALIGN); 2452 2453 if (bus_dmamap_load_mbuf_sg(sc->sc_cdata.stge_rx_tag, 2454 sc->sc_cdata.stge_rx_sparemap, m, segs, &nsegs, 0) != 0) { 2455 m_freem(m); 2456 return (ENOBUFS); 2457 } 2458 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); 2459 2460 rxd = &sc->sc_cdata.stge_rxdesc[idx]; 2461 if (rxd->rx_m != NULL) { 2462 bus_dmamap_sync(sc->sc_cdata.stge_rx_tag, rxd->rx_dmamap, 2463 BUS_DMASYNC_POSTREAD); 2464 bus_dmamap_unload(sc->sc_cdata.stge_rx_tag, rxd->rx_dmamap); 2465 } 2466 map = rxd->rx_dmamap; 2467 rxd->rx_dmamap = sc->sc_cdata.stge_rx_sparemap; 2468 sc->sc_cdata.stge_rx_sparemap = map; 2469 bus_dmamap_sync(sc->sc_cdata.stge_rx_tag, rxd->rx_dmamap, 2470 BUS_DMASYNC_PREREAD); 2471 rxd->rx_m = m; 2472 2473 rfd = &sc->sc_rdata.stge_rx_ring[idx]; 2474 rfd->rfd_frag.frag_word0 = 2475 htole64(FRAG_ADDR(segs[0].ds_addr) | FRAG_LEN(segs[0].ds_len)); 2476 rfd->rfd_status = 0; 2477 2478 return (0); 2479 } 2480 2481 /* 2482 * stge_set_filter: 2483 * 2484 * Set up the receive filter. 2485 */ 2486 static void 2487 stge_set_filter(struct stge_softc *sc) 2488 { 2489 struct ifnet *ifp; 2490 uint16_t mode; 2491 2492 STGE_LOCK_ASSERT(sc); 2493 2494 ifp = sc->sc_ifp; 2495 2496 mode = CSR_READ_2(sc, STGE_ReceiveMode); 2497 mode |= RM_ReceiveUnicast; 2498 if ((ifp->if_flags & IFF_BROADCAST) != 0) 2499 mode |= RM_ReceiveBroadcast; 2500 else 2501 mode &= ~RM_ReceiveBroadcast; 2502 if ((ifp->if_flags & IFF_PROMISC) != 0) 2503 mode |= RM_ReceiveAllFrames; 2504 else 2505 mode &= ~RM_ReceiveAllFrames; 2506 2507 CSR_WRITE_2(sc, STGE_ReceiveMode, mode); 2508 } 2509 2510 static void 2511 stge_set_multi(struct stge_softc *sc) 2512 { 2513 struct ifnet *ifp; 2514 struct ifmultiaddr *ifma; 2515 uint32_t crc; 2516 uint32_t mchash[2]; 2517 uint16_t mode; 2518 int count; 2519 2520 STGE_LOCK_ASSERT(sc); 2521 2522 ifp = sc->sc_ifp; 2523 2524 mode = CSR_READ_2(sc, STGE_ReceiveMode); 2525 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) { 2526 if ((ifp->if_flags & IFF_PROMISC) != 0) 2527 mode |= RM_ReceiveAllFrames; 2528 else if ((ifp->if_flags & IFF_ALLMULTI) != 0) 2529 mode |= RM_ReceiveMulticast; 2530 CSR_WRITE_2(sc, STGE_ReceiveMode, mode); 2531 return; 2532 } 2533 2534 /* clear existing filters. */ 2535 CSR_WRITE_4(sc, STGE_HashTable0, 0); 2536 CSR_WRITE_4(sc, STGE_HashTable1, 0); 2537 2538 /* 2539 * Set up the multicast address filter by passing all multicast 2540 * addresses through a CRC generator, and then using the low-order 2541 * 6 bits as an index into the 64 bit multicast hash table. The 2542 * high order bits select the register, while the rest of the bits 2543 * select the bit within the register. 2544 */ 2545 2546 bzero(mchash, sizeof(mchash)); 2547 2548 count = 0; 2549 if_maddr_rlock(sc->sc_ifp); 2550 CK_STAILQ_FOREACH(ifma, &sc->sc_ifp->if_multiaddrs, ifma_link) { 2551 if (ifma->ifma_addr->sa_family != AF_LINK) 2552 continue; 2553 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *) 2554 ifma->ifma_addr), ETHER_ADDR_LEN); 2555 2556 /* Just want the 6 least significant bits. */ 2557 crc &= 0x3f; 2558 2559 /* Set the corresponding bit in the hash table. */ 2560 mchash[crc >> 5] |= 1 << (crc & 0x1f); 2561 count++; 2562 } 2563 if_maddr_runlock(ifp); 2564 2565 mode &= ~(RM_ReceiveMulticast | RM_ReceiveAllFrames); 2566 if (count > 0) 2567 mode |= RM_ReceiveMulticastHash; 2568 else 2569 mode &= ~RM_ReceiveMulticastHash; 2570 2571 CSR_WRITE_4(sc, STGE_HashTable0, mchash[0]); 2572 CSR_WRITE_4(sc, STGE_HashTable1, mchash[1]); 2573 CSR_WRITE_2(sc, STGE_ReceiveMode, mode); 2574 } 2575 2576 static int 2577 sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high) 2578 { 2579 int error, value; 2580 2581 if (!arg1) 2582 return (EINVAL); 2583 value = *(int *)arg1; 2584 error = sysctl_handle_int(oidp, &value, 0, req); 2585 if (error || !req->newptr) 2586 return (error); 2587 if (value < low || value > high) 2588 return (EINVAL); 2589 *(int *)arg1 = value; 2590 2591 return (0); 2592 } 2593 2594 static int 2595 sysctl_hw_stge_rxint_nframe(SYSCTL_HANDLER_ARGS) 2596 { 2597 return (sysctl_int_range(oidp, arg1, arg2, req, 2598 STGE_RXINT_NFRAME_MIN, STGE_RXINT_NFRAME_MAX)); 2599 } 2600 2601 static int 2602 sysctl_hw_stge_rxint_dmawait(SYSCTL_HANDLER_ARGS) 2603 { 2604 return (sysctl_int_range(oidp, arg1, arg2, req, 2605 STGE_RXINT_DMAWAIT_MIN, STGE_RXINT_DMAWAIT_MAX)); 2606 } 2607