if_alc.c revision 1.5
1 /* $OpenBSD: if_alc.c,v 1.1 2009/08/08 09:31:13 kevlo Exp $ */ 2 /*- 3 * Copyright (c) 2009, Pyun YongHyeon <yongari (at) FreeBSD.org> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice unmodified, this list of conditions, and the following 11 * disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* Driver for Atheros AR813x/AR815x PCIe Ethernet. */ 30 31 #ifdef _KERNEL_OPT 32 #include "vlan.h" 33 #endif 34 35 #include <sys/param.h> 36 #include <sys/proc.h> 37 #include <sys/endian.h> 38 #include <sys/systm.h> 39 #include <sys/types.h> 40 #include <sys/sockio.h> 41 #include <sys/mbuf.h> 42 #include <sys/queue.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/callout.h> 46 #include <sys/socket.h> 47 #include <sys/module.h> 48 49 #include <sys/bus.h> 50 51 #include <net/if.h> 52 #include <net/if_dl.h> 53 #include <net/if_llc.h> 54 #include <net/if_media.h> 55 #include <net/if_ether.h> 56 57 #include <net/bpf.h> 58 59 #ifdef INET 60 #include <netinet/in.h> 61 #include <netinet/in_systm.h> 62 #include <netinet/in_var.h> 63 #include <netinet/ip.h> 64 #endif 65 66 #include <net/if_types.h> 67 #include <net/if_vlanvar.h> 68 69 #include <net/bpf.h> 70 71 #include <sys/rnd.h> 72 73 #include <dev/mii/mii.h> 74 #include <dev/mii/miivar.h> 75 76 #include <dev/pci/pcireg.h> 77 #include <dev/pci/pcivar.h> 78 #include <dev/pci/pcidevs.h> 79 80 #include <dev/pci/if_alcreg.h> 81 82 /* 83 * Devices supported by this driver. 84 */ 85 static struct alc_ident alc_ident_table[] = { 86 { PCI_VENDOR_ATTANSIC, PCI_PRODUCT_ATTANSIC_AR8131, 9 * 1024, 87 "Atheros AR8131 PCIe Gigabit Ethernet" }, 88 { PCI_VENDOR_ATTANSIC, PCI_PRODUCT_ATTANSIC_AR8132, 9 * 1024, 89 "Atheros AR8132 PCIe Fast Ethernet" }, 90 { PCI_VENDOR_ATTANSIC, PCI_PRODUCT_ATTANSIC_AR8151, 6 * 1024, 91 "Atheros AR8151 v1.0 PCIe Gigabit Ethernet" }, 92 { PCI_VENDOR_ATTANSIC, PCI_PRODUCT_ATTANSIC_AR8151_V2, 6 * 1024, 93 "Atheros AR8151 v2.0 PCIe Gigabit Ethernet" }, 94 { PCI_VENDOR_ATTANSIC, PCI_PRODUCT_ATTANSIC_AR8152_B, 6 * 1024, 95 "Atheros AR8152 v1.1 PCIe Fast Ethernet" }, 96 { PCI_VENDOR_ATTANSIC, PCI_PRODUCT_ATTANSIC_AR8152_B2, 6 * 1024, 97 "Atheros AR8152 v2.0 PCIe Fast Ethernet" }, 98 { 0, 0, 0, NULL }, 99 }; 100 101 static int alc_match(device_t, cfdata_t, void *); 102 static void alc_attach(device_t, device_t, void *); 103 static int alc_detach(device_t, int); 104 105 static int alc_init(struct ifnet *); 106 static void alc_start(struct ifnet *); 107 static int alc_ioctl(struct ifnet *, u_long, void *); 108 static void alc_watchdog(struct ifnet *); 109 static int alc_mediachange(struct ifnet *); 110 static void alc_mediastatus(struct ifnet *, struct ifmediareq *); 111 112 static void alc_aspm(struct alc_softc *, int); 113 static void alc_disable_l0s_l1(struct alc_softc *); 114 static int alc_dma_alloc(struct alc_softc *); 115 static void alc_dma_free(struct alc_softc *); 116 static int alc_encap(struct alc_softc *, struct mbuf **); 117 static struct alc_ident * 118 alc_find_ident(struct pci_attach_args *); 119 static void alc_get_macaddr(struct alc_softc *); 120 static void alc_init_cmb(struct alc_softc *); 121 static void alc_init_rr_ring(struct alc_softc *); 122 static int alc_init_rx_ring(struct alc_softc *); 123 static void alc_init_smb(struct alc_softc *); 124 static void alc_init_tx_ring(struct alc_softc *); 125 static int alc_intr(void *); 126 static void alc_mac_config(struct alc_softc *); 127 static int alc_miibus_readreg(device_t, int, int); 128 static void alc_miibus_statchg(device_t); 129 static void alc_miibus_writereg(device_t, int, int, int); 130 static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *, int); 131 static void alc_phy_down(struct alc_softc *); 132 static void alc_phy_reset(struct alc_softc *); 133 static void alc_reset(struct alc_softc *); 134 static void alc_rxeof(struct alc_softc *, struct rx_rdesc *); 135 static int alc_rxintr(struct alc_softc *); 136 static void alc_iff(struct alc_softc *); 137 static void alc_rxvlan(struct alc_softc *); 138 static void alc_start_queue(struct alc_softc *); 139 static void alc_stats_clear(struct alc_softc *); 140 static void alc_stats_update(struct alc_softc *); 141 static void alc_stop(struct ifnet *, int); 142 static void alc_stop_mac(struct alc_softc *); 143 static void alc_stop_queue(struct alc_softc *); 144 static void alc_tick(void *); 145 static void alc_txeof(struct alc_softc *); 146 147 uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0 }; 148 149 CFATTACH_DECL_NEW(alc, sizeof(struct alc_softc), 150 alc_match, alc_attach, alc_detach, NULL); 151 152 int alcdebug = 0; 153 #define DPRINTF(x) do { if (alcdebug) printf x; } while (0) 154 155 #define ETHER_ALIGN 2 156 #define ALC_CSUM_FEATURES (M_CSUM_TCPv4 | M_CSUM_UDPv4) 157 158 static int 159 alc_miibus_readreg(device_t dev, int phy, int reg) 160 { 161 struct alc_softc *sc = device_private(dev); 162 uint32_t v; 163 int i; 164 165 if (phy != sc->alc_phyaddr) 166 return (0); 167 168 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ | 169 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg)); 170 for (i = ALC_PHY_TIMEOUT; i > 0; i--) { 171 DELAY(5); 172 v = CSR_READ_4(sc, ALC_MDIO); 173 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0) 174 break; 175 } 176 177 if (i == 0) { 178 printf("%s: phy read timeout: phy %d, reg %d\n", 179 device_xname(sc->sc_dev), phy, reg); 180 return (0); 181 } 182 183 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT); 184 } 185 186 static void 187 alc_miibus_writereg(device_t dev, int phy, int reg, int val) 188 { 189 struct alc_softc *sc = device_private(dev); 190 uint32_t v; 191 int i; 192 193 if (phy != sc->alc_phyaddr) 194 return; 195 196 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE | 197 (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT | 198 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg)); 199 for (i = ALC_PHY_TIMEOUT; i > 0; i--) { 200 DELAY(5); 201 v = CSR_READ_4(sc, ALC_MDIO); 202 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0) 203 break; 204 } 205 206 if (i == 0) 207 printf("%s: phy write timeout: phy %d, reg %d\n", 208 device_xname(sc->sc_dev), phy, reg); 209 } 210 211 static void 212 alc_miibus_statchg(device_t dev) 213 { 214 struct alc_softc *sc = device_private(dev); 215 struct ifnet *ifp = &sc->sc_ec.ec_if; 216 struct mii_data *mii; 217 uint32_t reg; 218 219 if ((ifp->if_flags & IFF_RUNNING) == 0) 220 return; 221 222 mii = &sc->sc_miibus; 223 224 sc->alc_flags &= ~ALC_FLAG_LINK; 225 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 226 (IFM_ACTIVE | IFM_AVALID)) { 227 switch (IFM_SUBTYPE(mii->mii_media_active)) { 228 case IFM_10_T: 229 case IFM_100_TX: 230 sc->alc_flags |= ALC_FLAG_LINK; 231 break; 232 case IFM_1000_T: 233 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0) 234 sc->alc_flags |= ALC_FLAG_LINK; 235 break; 236 default: 237 break; 238 } 239 } 240 alc_stop_queue(sc); 241 /* Stop Rx/Tx MACs. */ 242 alc_stop_mac(sc); 243 244 /* Program MACs with resolved speed/duplex/flow-control. */ 245 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) { 246 alc_start_queue(sc); 247 alc_mac_config(sc); 248 /* Re-enable Tx/Rx MACs. */ 249 reg = CSR_READ_4(sc, ALC_MAC_CFG); 250 reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB; 251 CSR_WRITE_4(sc, ALC_MAC_CFG, reg); 252 alc_aspm(sc, IFM_SUBTYPE(mii->mii_media_active)); 253 } 254 } 255 256 static void 257 alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 258 { 259 struct alc_softc *sc = ifp->if_softc; 260 struct mii_data *mii = &sc->sc_miibus; 261 262 mii_pollstat(mii); 263 ifmr->ifm_status = mii->mii_media_status; 264 ifmr->ifm_active = mii->mii_media_active; 265 } 266 267 static int 268 alc_mediachange(struct ifnet *ifp) 269 { 270 struct alc_softc *sc = ifp->if_softc; 271 struct mii_data *mii = &sc->sc_miibus; 272 int error; 273 274 if (mii->mii_instance != 0) { 275 struct mii_softc *miisc; 276 277 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 278 mii_phy_reset(miisc); 279 } 280 error = mii_mediachg(mii); 281 282 return (error); 283 } 284 285 static struct alc_ident * 286 alc_find_ident(struct pci_attach_args *pa) 287 { 288 struct alc_ident *ident; 289 uint16_t vendor, devid; 290 291 vendor = PCI_VENDOR(pa->pa_id); 292 devid = PCI_PRODUCT(pa->pa_id); 293 for (ident = alc_ident_table; ident->name != NULL; ident++) { 294 if (vendor == ident->vendorid && devid == ident->deviceid) 295 return (ident); 296 } 297 298 return (NULL); 299 } 300 301 static int 302 alc_match(device_t dev, cfdata_t match, void *aux) 303 { 304 struct pci_attach_args *pa = aux; 305 306 return alc_find_ident(pa) != NULL; 307 } 308 309 static void 310 alc_get_macaddr(struct alc_softc *sc) 311 { 312 uint32_t ea[2], opt; 313 uint16_t val; 314 int eeprom, i; 315 316 eeprom = 0; 317 opt = CSR_READ_4(sc, ALC_OPT_CFG); 318 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_OTP_SEL) != 0 && 319 (CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) { 320 /* 321 * EEPROM found, let TWSI reload EEPROM configuration. 322 * This will set ethernet address of controller. 323 */ 324 eeprom++; 325 switch (sc->alc_ident->deviceid) { 326 case PCI_PRODUCT_ATTANSIC_AR8131: 327 case PCI_PRODUCT_ATTANSIC_AR8132: 328 if ((opt & OPT_CFG_CLK_ENB) == 0) { 329 opt |= OPT_CFG_CLK_ENB; 330 CSR_WRITE_4(sc, ALC_OPT_CFG, opt); 331 CSR_READ_4(sc, ALC_OPT_CFG); 332 DELAY(1000); 333 } 334 break; 335 case PCI_PRODUCT_ATTANSIC_AR8151: 336 case PCI_PRODUCT_ATTANSIC_AR8151_V2: 337 case PCI_PRODUCT_ATTANSIC_AR8152_B: 338 case PCI_PRODUCT_ATTANSIC_AR8152_B2: 339 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 340 ALC_MII_DBG_ADDR, 0x00); 341 val = alc_miibus_readreg(sc->sc_dev, sc->alc_phyaddr, 342 ALC_MII_DBG_DATA); 343 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 344 ALC_MII_DBG_DATA, val & 0xFF7F); 345 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 346 ALC_MII_DBG_ADDR, 0x3B); 347 val = alc_miibus_readreg(sc->sc_dev, sc->alc_phyaddr, 348 ALC_MII_DBG_DATA); 349 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 350 ALC_MII_DBG_DATA, val | 0x0008); 351 DELAY(20); 352 break; 353 } 354 355 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG, 356 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB); 357 CSR_WRITE_4(sc, ALC_WOL_CFG, 0); 358 CSR_READ_4(sc, ALC_WOL_CFG); 359 360 CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) | 361 TWSI_CFG_SW_LD_START); 362 for (i = 100; i > 0; i--) { 363 DELAY(1000); 364 if ((CSR_READ_4(sc, ALC_TWSI_CFG) & 365 TWSI_CFG_SW_LD_START) == 0) 366 break; 367 } 368 if (i == 0) 369 printf("%s: reloading EEPROM timeout!\n", 370 device_xname(sc->sc_dev)); 371 } else { 372 if (alcdebug) 373 printf("%s: EEPROM not found!\n", device_xname(sc->sc_dev)); 374 } 375 if (eeprom != 0) { 376 switch (sc->alc_ident->deviceid) { 377 case PCI_PRODUCT_ATTANSIC_AR8131: 378 case PCI_PRODUCT_ATTANSIC_AR8132: 379 if ((opt & OPT_CFG_CLK_ENB) != 0) { 380 opt &= ~OPT_CFG_CLK_ENB; 381 CSR_WRITE_4(sc, ALC_OPT_CFG, opt); 382 CSR_READ_4(sc, ALC_OPT_CFG); 383 DELAY(1000); 384 } 385 break; 386 case PCI_PRODUCT_ATTANSIC_AR8151: 387 case PCI_PRODUCT_ATTANSIC_AR8151_V2: 388 case PCI_PRODUCT_ATTANSIC_AR8152_B: 389 case PCI_PRODUCT_ATTANSIC_AR8152_B2: 390 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 391 ALC_MII_DBG_ADDR, 0x00); 392 val = alc_miibus_readreg(sc->sc_dev, sc->alc_phyaddr, 393 ALC_MII_DBG_DATA); 394 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 395 ALC_MII_DBG_DATA, val | 0x0080); 396 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 397 ALC_MII_DBG_ADDR, 0x3B); 398 val = alc_miibus_readreg(sc->sc_dev, sc->alc_phyaddr, 399 ALC_MII_DBG_DATA); 400 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 401 ALC_MII_DBG_DATA, val & 0xFFF7); 402 DELAY(20); 403 break; 404 } 405 } 406 407 ea[0] = CSR_READ_4(sc, ALC_PAR0); 408 ea[1] = CSR_READ_4(sc, ALC_PAR1); 409 sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF; 410 sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF; 411 sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF; 412 sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF; 413 sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF; 414 sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF; 415 } 416 417 static void 418 alc_disable_l0s_l1(struct alc_softc *sc) 419 { 420 uint32_t pmcfg; 421 422 /* Another magic from vendor. */ 423 pmcfg = CSR_READ_4(sc, ALC_PM_CFG); 424 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 | 425 PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK | 426 PM_CFG_SERDES_PD_EX_L1); 427 pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB | 428 PM_CFG_SERDES_L1_ENB; 429 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg); 430 } 431 432 static void 433 alc_phy_reset(struct alc_softc *sc) 434 { 435 uint16_t data; 436 437 /* Reset magic from Linux. */ 438 CSR_WRITE_2(sc, ALC_GPHY_CFG, 439 GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET); 440 CSR_READ_2(sc, ALC_GPHY_CFG); 441 DELAY(10 * 1000); 442 443 CSR_WRITE_2(sc, ALC_GPHY_CFG, 444 GPHY_CFG_EXT_RESET | GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | 445 GPHY_CFG_SEL_ANA_RESET); 446 CSR_READ_2(sc, ALC_GPHY_CFG); 447 DELAY(10 * 1000); 448 449 /* DSP fixup, Vendor magic. */ 450 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B) { 451 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 452 ALC_MII_DBG_ADDR, 0x000A); 453 data = alc_miibus_readreg(sc->sc_dev, sc->alc_phyaddr, 454 ALC_MII_DBG_DATA); 455 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 456 ALC_MII_DBG_DATA, data & 0xDFFF); 457 } 458 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151 || 459 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151_V2 || 460 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B || 461 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B2) { 462 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 463 ALC_MII_DBG_ADDR, 0x003B); 464 data = alc_miibus_readreg(sc->sc_dev, sc->alc_phyaddr, 465 ALC_MII_DBG_DATA); 466 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 467 ALC_MII_DBG_DATA, data & 0xFFF7); 468 DELAY(20 * 1000); 469 } 470 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151) { 471 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 472 ALC_MII_DBG_ADDR, 0x0029); 473 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 474 ALC_MII_DBG_DATA, 0x929D); 475 } 476 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8131 || 477 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8132 || 478 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151_V2 || 479 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B2) { 480 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 481 ALC_MII_DBG_ADDR, 0x0029); 482 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 483 ALC_MII_DBG_DATA, 0xB6DD); 484 } 485 486 /* Load DSP codes, vendor magic. */ 487 data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE | 488 ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK); 489 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 490 ALC_MII_DBG_ADDR, MII_ANA_CFG18); 491 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 492 ALC_MII_DBG_DATA, data); 493 494 data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) | 495 ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL | 496 ANA_SERDES_EN_LCKDT; 497 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 498 ALC_MII_DBG_ADDR, MII_ANA_CFG5); 499 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 500 ALC_MII_DBG_DATA, data); 501 502 data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) & 503 ANA_LONG_CABLE_TH_100_MASK) | 504 ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) & 505 ANA_SHORT_CABLE_TH_100_SHIFT) | 506 ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW; 507 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 508 ALC_MII_DBG_ADDR, MII_ANA_CFG54); 509 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 510 ALC_MII_DBG_DATA, data); 511 512 data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) | 513 ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) | 514 ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) | 515 ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK); 516 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 517 ALC_MII_DBG_ADDR, MII_ANA_CFG4); 518 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 519 ALC_MII_DBG_DATA, data); 520 521 data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) | 522 ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB | 523 ANA_OEN_125M; 524 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 525 ALC_MII_DBG_ADDR, MII_ANA_CFG0); 526 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 527 ALC_MII_DBG_DATA, data); 528 DELAY(1000); 529 } 530 531 static void 532 alc_phy_down(struct alc_softc *sc) 533 { 534 switch (sc->alc_ident->deviceid) { 535 case PCI_PRODUCT_ATTANSIC_AR8151: 536 case PCI_PRODUCT_ATTANSIC_AR8151_V2: 537 /* 538 * GPHY power down caused more problems on AR8151 v2.0. 539 * When driver is reloaded after GPHY power down, 540 * accesses to PHY/MAC registers hung the system. Only 541 * cold boot recovered from it. I'm not sure whether 542 * AR8151 v1.0 also requires this one though. I don't 543 * have AR8151 v1.0 controller in hand. 544 * The only option left is to isolate the PHY and 545 * initiates power down the PHY which in turn saves 546 * more power when driver is unloaded. 547 */ 548 alc_miibus_writereg(sc->sc_dev, sc->alc_phyaddr, 549 MII_BMCR, BMCR_ISO | BMCR_PDOWN); 550 break; 551 default: 552 /* Force PHY down. */ 553 CSR_WRITE_2(sc, ALC_GPHY_CFG, 554 GPHY_CFG_EXT_RESET | GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | 555 GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ | 556 GPHY_CFG_PWDOWN_HW); 557 DELAY(1000); 558 break; 559 } 560 } 561 562 static void 563 alc_aspm(struct alc_softc *sc, int media) 564 { 565 uint32_t pmcfg; 566 uint16_t linkcfg; 567 568 pmcfg = CSR_READ_4(sc, ALC_PM_CFG); 569 if ((sc->alc_flags & (ALC_FLAG_APS | ALC_FLAG_PCIE)) == 570 (ALC_FLAG_APS | ALC_FLAG_PCIE)) 571 linkcfg = CSR_READ_2(sc, sc->alc_expcap + 572 PCI_PCIE_LCSR); 573 else 574 linkcfg = 0; 575 pmcfg &= ~PM_CFG_SERDES_PD_EX_L1; 576 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK); 577 pmcfg |= PM_CFG_MAC_ASPM_CHK; 578 pmcfg |= (PM_CFG_LCKDET_TIMER_DEFAULT << PM_CFG_LCKDET_TIMER_SHIFT); 579 pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB); 580 581 if ((sc->alc_flags & ALC_FLAG_APS) != 0) { 582 /* Disable extended sync except AR8152 B v1.0 */ 583 linkcfg &= ~0x80; 584 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B && 585 sc->alc_rev == ATHEROS_AR8152_B_V10) 586 linkcfg |= 0x80; 587 CSR_WRITE_2(sc, sc->alc_expcap + PCI_PCIE_LCSR, 588 linkcfg); 589 pmcfg &= ~(PM_CFG_EN_BUFS_RX_L0S | PM_CFG_SA_DLY_ENB | 590 PM_CFG_HOTRST); 591 pmcfg |= (PM_CFG_L1_ENTRY_TIMER_DEFAULT << 592 PM_CFG_L1_ENTRY_TIMER_SHIFT); 593 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK; 594 pmcfg |= (PM_CFG_PM_REQ_TIMER_DEFAULT << 595 PM_CFG_PM_REQ_TIMER_SHIFT); 596 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_PCIE_RECV; 597 } 598 599 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) { 600 if ((sc->alc_flags & ALC_FLAG_L0S) != 0) 601 pmcfg |= PM_CFG_ASPM_L0S_ENB; 602 if ((sc->alc_flags & ALC_FLAG_L1S) != 0) 603 pmcfg |= PM_CFG_ASPM_L1_ENB; 604 if ((sc->alc_flags & ALC_FLAG_APS) != 0) { 605 if (sc->alc_ident->deviceid == 606 PCI_PRODUCT_ATTANSIC_AR8152_B) 607 pmcfg &= ~PM_CFG_ASPM_L0S_ENB; 608 pmcfg &= ~(PM_CFG_SERDES_L1_ENB | 609 PM_CFG_SERDES_PLL_L1_ENB | 610 PM_CFG_SERDES_BUDS_RX_L1_ENB); 611 pmcfg |= PM_CFG_CLK_SWH_L1; 612 if (media == IFM_100_TX || media == IFM_1000_T) { 613 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK; 614 switch (sc->alc_ident->deviceid) { 615 case PCI_PRODUCT_ATTANSIC_AR8152_B: 616 pmcfg |= (7 << 617 PM_CFG_L1_ENTRY_TIMER_SHIFT); 618 break; 619 case PCI_PRODUCT_ATTANSIC_AR8152_B2: 620 case PCI_PRODUCT_ATTANSIC_AR8151_V2: 621 pmcfg |= (4 << 622 PM_CFG_L1_ENTRY_TIMER_SHIFT); 623 break; 624 default: 625 pmcfg |= (15 << 626 PM_CFG_L1_ENTRY_TIMER_SHIFT); 627 break; 628 } 629 } 630 } else { 631 pmcfg |= PM_CFG_SERDES_L1_ENB | 632 PM_CFG_SERDES_PLL_L1_ENB | 633 PM_CFG_SERDES_BUDS_RX_L1_ENB; 634 pmcfg &= ~(PM_CFG_CLK_SWH_L1 | 635 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB); 636 } 637 } else { 638 pmcfg &= ~(PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_L1_ENB | 639 PM_CFG_SERDES_PLL_L1_ENB); 640 pmcfg |= PM_CFG_CLK_SWH_L1; 641 if ((sc->alc_flags & ALC_FLAG_L1S) != 0) 642 pmcfg |= PM_CFG_ASPM_L1_ENB; 643 } 644 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg); 645 } 646 647 static void 648 alc_attach(device_t parent, device_t self, void *aux) 649 { 650 651 struct alc_softc *sc = device_private(self); 652 struct pci_attach_args *pa = aux; 653 pci_chipset_tag_t pc = pa->pa_pc; 654 pci_intr_handle_t ih; 655 const char *intrstr; 656 struct ifnet *ifp; 657 pcireg_t memtype; 658 const char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/L1" }; 659 uint16_t burst; 660 int base, mii_flags, state, error = 0; 661 uint32_t cap, ctl, val; 662 663 sc->alc_ident = alc_find_ident(pa); 664 665 aprint_naive("\n"); 666 aprint_normal(": %s\n", sc->alc_ident->name); 667 668 sc->sc_dev = self; 669 sc->sc_dmat = pa->pa_dmat; 670 sc->sc_pct = pa->pa_pc; 671 sc->sc_pcitag = pa->pa_tag; 672 673 /* 674 * Allocate IO memory 675 */ 676 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, ALC_PCIR_BAR); 677 switch (memtype) { 678 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: 679 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT_1M: 680 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: 681 break; 682 default: 683 aprint_error_dev(self, "invalid base address register\n"); 684 break; 685 } 686 687 if (pci_mapreg_map(pa, ALC_PCIR_BAR, memtype, 0, &sc->sc_mem_bt, 688 &sc->sc_mem_bh, NULL, &sc->sc_mem_size)) { 689 aprint_error_dev(self, "could not map mem space\n"); 690 return; 691 } 692 693 if (pci_intr_map(pa, &ih) != 0) { 694 printf(": can't map interrupt\n"); 695 goto fail; 696 } 697 698 /* 699 * Allocate IRQ 700 */ 701 intrstr = pci_intr_string(sc->sc_pct, ih); 702 sc->sc_irq_handle = pci_intr_establish(pc, ih, IPL_NET, alc_intr, sc); 703 if (sc->sc_irq_handle == NULL) { 704 printf(": could not establish interrupt"); 705 if (intrstr != NULL) 706 printf(" at %s", intrstr); 707 printf("\n"); 708 goto fail; 709 } 710 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 711 712 /* Set PHY address. */ 713 sc->alc_phyaddr = ALC_PHY_ADDR; 714 715 /* Initialize DMA parameters. */ 716 sc->alc_dma_rd_burst = 0; 717 sc->alc_dma_wr_burst = 0; 718 sc->alc_rcb = DMA_CFG_RCB_64; 719 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PCIEXPRESS, 720 &base, NULL)) { 721 sc->alc_flags |= ALC_FLAG_PCIE; 722 sc->alc_expcap = base; 723 burst = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 724 base + PCI_PCIE_DCSR) >> 16; 725 sc->alc_dma_rd_burst = (burst & 0x7000) >> 12; 726 sc->alc_dma_wr_burst = (burst & 0x00e0) >> 5; 727 if (alcdebug) { 728 printf("%s: Read request size : %u bytes.\n", 729 device_xname(sc->sc_dev), 730 alc_dma_burst[sc->alc_dma_rd_burst]); 731 printf("%s: TLP payload size : %u bytes.\n", 732 device_xname(sc->sc_dev), 733 alc_dma_burst[sc->alc_dma_wr_burst]); 734 } 735 /* Clear data link and flow-control protocol error. */ 736 val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV); 737 val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP); 738 CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val); 739 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG, 740 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB); 741 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, 742 CSR_READ_4(sc, ALC_PCIE_PHYMISC) | 743 PCIE_PHYMISC_FORCE_RCV_DET); 744 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B && 745 sc->alc_rev == ATHEROS_AR8152_B_V10) { 746 val = CSR_READ_4(sc, ALC_PCIE_PHYMISC2); 747 val &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK | 748 PCIE_PHYMISC2_SERDES_TH_MASK); 749 val |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT; 750 val |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT; 751 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC2, val); 752 } 753 /* Disable ASPM L0S and L1. */ 754 cap = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 755 base + PCI_PCIE_LCAP) >> 16; 756 if ((cap & 0x00000c00) != 0) { 757 ctl = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 758 base + PCI_PCIE_LCSR) >> 16; 759 if ((ctl & 0x08) != 0) 760 sc->alc_rcb = DMA_CFG_RCB_128; 761 if (alcdebug) 762 printf("%s: RCB %u bytes\n", 763 device_xname(sc->sc_dev), 764 sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128); 765 state = ctl & 0x03; 766 if (state & 0x01) 767 sc->alc_flags |= ALC_FLAG_L0S; 768 if (state & 0x02) 769 sc->alc_flags |= ALC_FLAG_L1S; 770 if (alcdebug) 771 printf("%s: ASPM %s %s\n", 772 device_xname(sc->sc_dev), 773 aspm_state[state], 774 state == 0 ? "disabled" : "enabled"); 775 alc_disable_l0s_l1(sc); 776 } else { 777 aprint_debug_dev(sc->sc_dev, "no ASPM support\n"); 778 } 779 } 780 781 /* Reset PHY. */ 782 alc_phy_reset(sc); 783 784 /* Reset the ethernet controller. */ 785 alc_reset(sc); 786 787 /* 788 * One odd thing is AR8132 uses the same PHY hardware(F1 789 * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports 790 * the PHY supports 1000Mbps but that's not true. The PHY 791 * used in AR8132 can't establish gigabit link even if it 792 * shows the same PHY model/revision number of AR8131. 793 */ 794 switch (sc->alc_ident->deviceid) { 795 case PCI_PRODUCT_ATTANSIC_AR8152_B: 796 case PCI_PRODUCT_ATTANSIC_AR8152_B2: 797 sc->alc_flags |= ALC_FLAG_APS; 798 /* FALLTHROUGH */ 799 case PCI_PRODUCT_ATTANSIC_AR8132: 800 sc->alc_flags |= ALC_FLAG_FASTETHER; 801 break; 802 case PCI_PRODUCT_ATTANSIC_AR8151: 803 case PCI_PRODUCT_ATTANSIC_AR8151_V2: 804 sc->alc_flags |= ALC_FLAG_APS; 805 /* FALLTHROUGH */ 806 default: 807 break; 808 } 809 sc->alc_flags |= ALC_FLAG_JUMBO | ALC_FLAG_ASPM_MON; 810 811 /* 812 * It seems that AR813x/AR815x has silicon bug for SMB. In 813 * addition, Atheros said that enabling SMB wouldn't improve 814 * performance. However I think it's bad to access lots of 815 * registers to extract MAC statistics. 816 */ 817 sc->alc_flags |= ALC_FLAG_SMB_BUG; 818 /* 819 * Don't use Tx CMB. It is known to have silicon bug. 820 */ 821 sc->alc_flags |= ALC_FLAG_CMB_BUG; 822 sc->alc_rev = PCI_REVISION(pa->pa_class); 823 sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >> 824 MASTER_CHIP_REV_SHIFT; 825 if (alcdebug) { 826 printf("%s: PCI device revision : 0x%04x\n", 827 device_xname(sc->sc_dev), sc->alc_rev); 828 printf("%s: Chip id/revision : 0x%04x\n", 829 device_xname(sc->sc_dev), sc->alc_chip_rev); 830 printf("%s: %u Tx FIFO, %u Rx FIFO\n", device_xname(sc->sc_dev), 831 CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8, 832 CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8); 833 } 834 835 error = alc_dma_alloc(sc); 836 if (error) 837 goto fail; 838 839 callout_init(&sc->sc_tick_ch, 0); 840 callout_setfunc(&sc->sc_tick_ch, alc_tick, sc); 841 842 /* Load station address. */ 843 alc_get_macaddr(sc); 844 845 aprint_normal_dev(self, "Ethernet address %s\n", 846 ether_sprintf(sc->alc_eaddr)); 847 848 ifp = &sc->sc_ec.ec_if; 849 ifp->if_softc = sc; 850 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 851 ifp->if_init = alc_init; 852 ifp->if_ioctl = alc_ioctl; 853 ifp->if_start = alc_start; 854 ifp->if_stop = alc_stop; 855 ifp->if_watchdog = alc_watchdog; 856 ifp->if_baudrate = IF_Gbps(1); 857 IFQ_SET_MAXLEN(&ifp->if_snd, ALC_TX_RING_CNT - 1); 858 IFQ_SET_READY(&ifp->if_snd); 859 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 860 861 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 862 863 #ifdef ALC_CHECKSUM 864 ifp->if_capabilities |= IFCAP_CSUM_IPv4_Tx | IFCAP_CSUM_IPv4_Rx | 865 IFCAP_CSUM_TCPv4_Tx | IFCAP_CSUM_TCPv4_Rx | 866 IFCAP_CSUM_UDPv4_Tx | IFCAP_CSUM_TCPv4_Rx; 867 #endif 868 869 #if NVLAN > 0 870 sc->sc_ec.ec_capabilities |= ETHERCAP_VLAN_HWTAGGING; 871 #endif 872 873 /* Set up MII bus. */ 874 sc->sc_miibus.mii_ifp = ifp; 875 sc->sc_miibus.mii_readreg = alc_miibus_readreg; 876 sc->sc_miibus.mii_writereg = alc_miibus_writereg; 877 sc->sc_miibus.mii_statchg = alc_miibus_statchg; 878 879 sc->sc_ec.ec_mii = &sc->sc_miibus; 880 ifmedia_init(&sc->sc_miibus.mii_media, 0, alc_mediachange, 881 alc_mediastatus); 882 mii_flags = 0; 883 if ((sc->alc_flags & ALC_FLAG_JUMBO) != 0) 884 mii_flags |= MIIF_DOPAUSE; 885 mii_attach(self, &sc->sc_miibus, 0xffffffff, MII_PHY_ANY, 886 MII_OFFSET_ANY, mii_flags); 887 888 if (LIST_FIRST(&sc->sc_miibus.mii_phys) == NULL) { 889 printf("%s: no PHY found!\n", device_xname(sc->sc_dev)); 890 ifmedia_add(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_MANUAL, 891 0, NULL); 892 ifmedia_set(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_MANUAL); 893 } else 894 ifmedia_set(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_AUTO); 895 896 if_attach(ifp); 897 ether_ifattach(ifp, sc->alc_eaddr); 898 899 if (!pmf_device_register(self, NULL, NULL)) 900 aprint_error_dev(self, "couldn't establish power handler\n"); 901 else 902 pmf_class_network_register(self, ifp); 903 904 return; 905 fail: 906 alc_dma_free(sc); 907 if (sc->sc_irq_handle != NULL) { 908 pci_intr_disestablish(sc->sc_pct, sc->sc_irq_handle); 909 sc->sc_irq_handle = NULL; 910 } 911 if (sc->sc_mem_size) { 912 bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, sc->sc_mem_size); 913 sc->sc_mem_size = 0; 914 } 915 } 916 917 static int 918 alc_detach(device_t self, int flags) 919 { 920 struct alc_softc *sc = device_private(self); 921 struct ifnet *ifp = &sc->sc_ec.ec_if; 922 int s; 923 924 s = splnet(); 925 alc_stop(ifp, 0); 926 splx(s); 927 928 mii_detach(&sc->sc_miibus, MII_PHY_ANY, MII_OFFSET_ANY); 929 930 /* Delete all remaining media. */ 931 ifmedia_delete_instance(&sc->sc_miibus.mii_media, IFM_INST_ANY); 932 933 ether_ifdetach(ifp); 934 if_detach(ifp); 935 alc_dma_free(sc); 936 937 alc_phy_down(sc); 938 if (sc->sc_irq_handle != NULL) { 939 pci_intr_disestablish(sc->sc_pct, sc->sc_irq_handle); 940 sc->sc_irq_handle = NULL; 941 } 942 if (sc->sc_mem_size) { 943 bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, sc->sc_mem_size); 944 sc->sc_mem_size = 0; 945 } 946 947 return (0); 948 } 949 950 static int 951 alc_dma_alloc(struct alc_softc *sc) 952 { 953 struct alc_txdesc *txd; 954 struct alc_rxdesc *rxd; 955 int nsegs, error, i; 956 957 /* 958 * Create DMA stuffs for TX ring 959 */ 960 error = bus_dmamap_create(sc->sc_dmat, ALC_TX_RING_SZ, 1, 961 ALC_TX_RING_SZ, 0, BUS_DMA_NOWAIT, &sc->alc_cdata.alc_tx_ring_map); 962 if (error) { 963 sc->alc_cdata.alc_tx_ring_map = NULL; 964 return (ENOBUFS); 965 } 966 967 /* Allocate DMA'able memory for TX ring */ 968 error = bus_dmamem_alloc(sc->sc_dmat, ALC_TX_RING_SZ, 969 ETHER_ALIGN, 0, &sc->alc_rdata.alc_tx_ring_seg, 1, 970 &nsegs, BUS_DMA_NOWAIT); 971 if (error) { 972 printf("%s: could not allocate DMA'able memory for Tx ring.\n", 973 device_xname(sc->sc_dev)); 974 return error; 975 } 976 977 error = bus_dmamem_map(sc->sc_dmat, &sc->alc_rdata.alc_tx_ring_seg, 978 nsegs, ALC_TX_RING_SZ, (void **)&sc->alc_rdata.alc_tx_ring, 979 BUS_DMA_NOWAIT); 980 if (error) 981 return (ENOBUFS); 982 983 /* Load the DMA map for Tx ring. */ 984 error = bus_dmamap_load(sc->sc_dmat, sc->alc_cdata.alc_tx_ring_map, 985 sc->alc_rdata.alc_tx_ring, ALC_TX_RING_SZ, NULL, BUS_DMA_WAITOK); 986 if (error) { 987 printf("%s: could not load DMA'able memory for Tx ring.\n", 988 device_xname(sc->sc_dev)); 989 bus_dmamem_free(sc->sc_dmat, 990 &sc->alc_rdata.alc_tx_ring_seg, 1); 991 return error; 992 } 993 994 sc->alc_rdata.alc_tx_ring_paddr = 995 sc->alc_cdata.alc_tx_ring_map->dm_segs[0].ds_addr; 996 997 /* 998 * Create DMA stuffs for RX ring 999 */ 1000 error = bus_dmamap_create(sc->sc_dmat, ALC_RX_RING_SZ, 1, 1001 ALC_RX_RING_SZ, 0, BUS_DMA_NOWAIT, &sc->alc_cdata.alc_rx_ring_map); 1002 if (error) 1003 return (ENOBUFS); 1004 1005 /* Allocate DMA'able memory for RX ring */ 1006 error = bus_dmamem_alloc(sc->sc_dmat, ALC_RX_RING_SZ, 1007 ETHER_ALIGN, 0, &sc->alc_rdata.alc_rx_ring_seg, 1, 1008 &nsegs, BUS_DMA_NOWAIT); 1009 if (error) { 1010 printf("%s: could not allocate DMA'able memory for Rx ring.\n", 1011 device_xname(sc->sc_dev)); 1012 return error; 1013 } 1014 1015 error = bus_dmamem_map(sc->sc_dmat, &sc->alc_rdata.alc_rx_ring_seg, 1016 nsegs, ALC_RX_RING_SZ, (void **)&sc->alc_rdata.alc_rx_ring, 1017 BUS_DMA_NOWAIT); 1018 if (error) 1019 return (ENOBUFS); 1020 1021 /* Load the DMA map for Rx ring. */ 1022 error = bus_dmamap_load(sc->sc_dmat, sc->alc_cdata.alc_rx_ring_map, 1023 sc->alc_rdata.alc_rx_ring, ALC_RX_RING_SZ, NULL, BUS_DMA_WAITOK); 1024 if (error) { 1025 printf("%s: could not load DMA'able memory for Rx ring.\n", 1026 device_xname(sc->sc_dev)); 1027 bus_dmamem_free(sc->sc_dmat, 1028 &sc->alc_rdata.alc_rx_ring_seg, 1); 1029 return error; 1030 } 1031 1032 sc->alc_rdata.alc_rx_ring_paddr = 1033 sc->alc_cdata.alc_rx_ring_map->dm_segs[0].ds_addr; 1034 1035 /* 1036 * Create DMA stuffs for RX return ring 1037 */ 1038 error = bus_dmamap_create(sc->sc_dmat, ALC_RR_RING_SZ, 1, 1039 ALC_RR_RING_SZ, 0, BUS_DMA_NOWAIT, &sc->alc_cdata.alc_rr_ring_map); 1040 if (error) 1041 return (ENOBUFS); 1042 1043 /* Allocate DMA'able memory for RX return ring */ 1044 error = bus_dmamem_alloc(sc->sc_dmat, ALC_RR_RING_SZ, 1045 ETHER_ALIGN, 0, &sc->alc_rdata.alc_rr_ring_seg, 1, 1046 &nsegs, BUS_DMA_NOWAIT); 1047 if (error) { 1048 printf("%s: could not allocate DMA'able memory for Rx " 1049 "return ring.\n", device_xname(sc->sc_dev)); 1050 return error; 1051 } 1052 1053 error = bus_dmamem_map(sc->sc_dmat, &sc->alc_rdata.alc_rr_ring_seg, 1054 nsegs, ALC_RR_RING_SZ, (void **)&sc->alc_rdata.alc_rr_ring, 1055 BUS_DMA_NOWAIT); 1056 if (error) 1057 return (ENOBUFS); 1058 1059 /* Load the DMA map for Rx return ring. */ 1060 error = bus_dmamap_load(sc->sc_dmat, sc->alc_cdata.alc_rr_ring_map, 1061 sc->alc_rdata.alc_rr_ring, ALC_RR_RING_SZ, NULL, BUS_DMA_WAITOK); 1062 if (error) { 1063 printf("%s: could not load DMA'able memory for Rx return ring." 1064 "\n", device_xname(sc->sc_dev)); 1065 bus_dmamem_free(sc->sc_dmat, 1066 &sc->alc_rdata.alc_rr_ring_seg, 1); 1067 return error; 1068 } 1069 1070 sc->alc_rdata.alc_rr_ring_paddr = 1071 sc->alc_cdata.alc_rr_ring_map->dm_segs[0].ds_addr; 1072 1073 /* 1074 * Create DMA stuffs for CMB block 1075 */ 1076 error = bus_dmamap_create(sc->sc_dmat, ALC_CMB_SZ, 1, 1077 ALC_CMB_SZ, 0, BUS_DMA_NOWAIT, 1078 &sc->alc_cdata.alc_cmb_map); 1079 if (error) 1080 return (ENOBUFS); 1081 1082 /* Allocate DMA'able memory for CMB block */ 1083 error = bus_dmamem_alloc(sc->sc_dmat, ALC_CMB_SZ, 1084 ETHER_ALIGN, 0, &sc->alc_rdata.alc_cmb_seg, 1, 1085 &nsegs, BUS_DMA_NOWAIT); 1086 if (error) { 1087 printf("%s: could not allocate DMA'able memory for " 1088 "CMB block\n", device_xname(sc->sc_dev)); 1089 return error; 1090 } 1091 1092 error = bus_dmamem_map(sc->sc_dmat, &sc->alc_rdata.alc_cmb_seg, 1093 nsegs, ALC_CMB_SZ, (void **)&sc->alc_rdata.alc_cmb, 1094 BUS_DMA_NOWAIT); 1095 if (error) 1096 return (ENOBUFS); 1097 1098 /* Load the DMA map for CMB block. */ 1099 error = bus_dmamap_load(sc->sc_dmat, sc->alc_cdata.alc_cmb_map, 1100 sc->alc_rdata.alc_cmb, ALC_CMB_SZ, NULL, 1101 BUS_DMA_WAITOK); 1102 if (error) { 1103 printf("%s: could not load DMA'able memory for CMB block\n", 1104 device_xname(sc->sc_dev)); 1105 bus_dmamem_free(sc->sc_dmat, 1106 &sc->alc_rdata.alc_cmb_seg, 1); 1107 return error; 1108 } 1109 1110 sc->alc_rdata.alc_cmb_paddr = 1111 sc->alc_cdata.alc_cmb_map->dm_segs[0].ds_addr; 1112 1113 /* 1114 * Create DMA stuffs for SMB block 1115 */ 1116 error = bus_dmamap_create(sc->sc_dmat, ALC_SMB_SZ, 1, 1117 ALC_SMB_SZ, 0, BUS_DMA_NOWAIT, 1118 &sc->alc_cdata.alc_smb_map); 1119 if (error) 1120 return (ENOBUFS); 1121 1122 /* Allocate DMA'able memory for SMB block */ 1123 error = bus_dmamem_alloc(sc->sc_dmat, ALC_SMB_SZ, 1124 ETHER_ALIGN, 0, &sc->alc_rdata.alc_smb_seg, 1, 1125 &nsegs, BUS_DMA_NOWAIT); 1126 if (error) { 1127 printf("%s: could not allocate DMA'able memory for " 1128 "SMB block\n", device_xname(sc->sc_dev)); 1129 return error; 1130 } 1131 1132 error = bus_dmamem_map(sc->sc_dmat, &sc->alc_rdata.alc_smb_seg, 1133 nsegs, ALC_SMB_SZ, (void **)&sc->alc_rdata.alc_smb, 1134 BUS_DMA_NOWAIT); 1135 if (error) 1136 return (ENOBUFS); 1137 1138 /* Load the DMA map for SMB block */ 1139 error = bus_dmamap_load(sc->sc_dmat, sc->alc_cdata.alc_smb_map, 1140 sc->alc_rdata.alc_smb, ALC_SMB_SZ, NULL, 1141 BUS_DMA_WAITOK); 1142 if (error) { 1143 printf("%s: could not load DMA'able memory for SMB block\n", 1144 device_xname(sc->sc_dev)); 1145 bus_dmamem_free(sc->sc_dmat, 1146 &sc->alc_rdata.alc_smb_seg, 1); 1147 return error; 1148 } 1149 1150 sc->alc_rdata.alc_smb_paddr = 1151 sc->alc_cdata.alc_smb_map->dm_segs[0].ds_addr; 1152 1153 1154 /* Create DMA maps for Tx buffers. */ 1155 for (i = 0; i < ALC_TX_RING_CNT; i++) { 1156 txd = &sc->alc_cdata.alc_txdesc[i]; 1157 txd->tx_m = NULL; 1158 txd->tx_dmamap = NULL; 1159 error = bus_dmamap_create(sc->sc_dmat, ALC_TSO_MAXSIZE, 1160 ALC_MAXTXSEGS, ALC_TSO_MAXSEGSIZE, 0, BUS_DMA_NOWAIT, 1161 &txd->tx_dmamap); 1162 if (error) { 1163 printf("%s: could not create Tx dmamap.\n", 1164 device_xname(sc->sc_dev)); 1165 return error; 1166 } 1167 } 1168 1169 /* Create DMA maps for Rx buffers. */ 1170 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, 1171 BUS_DMA_NOWAIT, &sc->alc_cdata.alc_rx_sparemap); 1172 if (error) { 1173 printf("%s: could not create spare Rx dmamap.\n", 1174 device_xname(sc->sc_dev)); 1175 return error; 1176 } 1177 1178 for (i = 0; i < ALC_RX_RING_CNT; i++) { 1179 rxd = &sc->alc_cdata.alc_rxdesc[i]; 1180 rxd->rx_m = NULL; 1181 rxd->rx_dmamap = NULL; 1182 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, 1183 MCLBYTES, 0, BUS_DMA_NOWAIT, &rxd->rx_dmamap); 1184 if (error) { 1185 printf("%s: could not create Rx dmamap.\n", 1186 device_xname(sc->sc_dev)); 1187 return error; 1188 } 1189 } 1190 1191 return (0); 1192 } 1193 1194 1195 static void 1196 alc_dma_free(struct alc_softc *sc) 1197 { 1198 struct alc_txdesc *txd; 1199 struct alc_rxdesc *rxd; 1200 int i; 1201 1202 /* Tx buffers */ 1203 for (i = 0; i < ALC_TX_RING_CNT; i++) { 1204 txd = &sc->alc_cdata.alc_txdesc[i]; 1205 if (txd->tx_dmamap != NULL) { 1206 bus_dmamap_destroy(sc->sc_dmat, txd->tx_dmamap); 1207 txd->tx_dmamap = NULL; 1208 } 1209 } 1210 /* Rx buffers */ 1211 for (i = 0; i < ALC_RX_RING_CNT; i++) { 1212 rxd = &sc->alc_cdata.alc_rxdesc[i]; 1213 if (rxd->rx_dmamap != NULL) { 1214 bus_dmamap_destroy(sc->sc_dmat, rxd->rx_dmamap); 1215 rxd->rx_dmamap = NULL; 1216 } 1217 } 1218 if (sc->alc_cdata.alc_rx_sparemap != NULL) { 1219 bus_dmamap_destroy(sc->sc_dmat, sc->alc_cdata.alc_rx_sparemap); 1220 sc->alc_cdata.alc_rx_sparemap = NULL; 1221 } 1222 1223 /* Tx ring. */ 1224 if (sc->alc_cdata.alc_tx_ring_map != NULL) 1225 bus_dmamap_unload(sc->sc_dmat, sc->alc_cdata.alc_tx_ring_map); 1226 if (sc->alc_cdata.alc_tx_ring_map != NULL && 1227 sc->alc_rdata.alc_tx_ring != NULL) 1228 bus_dmamem_free(sc->sc_dmat, 1229 &sc->alc_rdata.alc_tx_ring_seg, 1); 1230 sc->alc_rdata.alc_tx_ring = NULL; 1231 sc->alc_cdata.alc_tx_ring_map = NULL; 1232 1233 /* Rx ring. */ 1234 if (sc->alc_cdata.alc_rx_ring_map != NULL) 1235 bus_dmamap_unload(sc->sc_dmat, sc->alc_cdata.alc_rx_ring_map); 1236 if (sc->alc_cdata.alc_rx_ring_map != NULL && 1237 sc->alc_rdata.alc_rx_ring != NULL) 1238 bus_dmamem_free(sc->sc_dmat, 1239 &sc->alc_rdata.alc_rx_ring_seg, 1); 1240 sc->alc_rdata.alc_rx_ring = NULL; 1241 sc->alc_cdata.alc_rx_ring_map = NULL; 1242 1243 /* Rx return ring. */ 1244 if (sc->alc_cdata.alc_rr_ring_map != NULL) 1245 bus_dmamap_unload(sc->sc_dmat, sc->alc_cdata.alc_rr_ring_map); 1246 if (sc->alc_cdata.alc_rr_ring_map != NULL && 1247 sc->alc_rdata.alc_rr_ring != NULL) 1248 bus_dmamem_free(sc->sc_dmat, 1249 &sc->alc_rdata.alc_rr_ring_seg, 1); 1250 sc->alc_rdata.alc_rr_ring = NULL; 1251 sc->alc_cdata.alc_rr_ring_map = NULL; 1252 1253 /* CMB block */ 1254 if (sc->alc_cdata.alc_cmb_map != NULL) 1255 bus_dmamap_unload(sc->sc_dmat, sc->alc_cdata.alc_cmb_map); 1256 if (sc->alc_cdata.alc_cmb_map != NULL && 1257 sc->alc_rdata.alc_cmb != NULL) 1258 bus_dmamem_free(sc->sc_dmat, 1259 &sc->alc_rdata.alc_cmb_seg, 1); 1260 sc->alc_rdata.alc_cmb = NULL; 1261 sc->alc_cdata.alc_cmb_map = NULL; 1262 1263 /* SMB block */ 1264 if (sc->alc_cdata.alc_smb_map != NULL) 1265 bus_dmamap_unload(sc->sc_dmat, sc->alc_cdata.alc_smb_map); 1266 if (sc->alc_cdata.alc_smb_map != NULL && 1267 sc->alc_rdata.alc_smb != NULL) 1268 bus_dmamem_free(sc->sc_dmat, 1269 &sc->alc_rdata.alc_smb_seg, 1); 1270 sc->alc_rdata.alc_smb = NULL; 1271 sc->alc_cdata.alc_smb_map = NULL; 1272 } 1273 1274 static int 1275 alc_encap(struct alc_softc *sc, struct mbuf **m_head) 1276 { 1277 struct alc_txdesc *txd, *txd_last; 1278 struct tx_desc *desc; 1279 struct mbuf *m; 1280 bus_dmamap_t map; 1281 uint32_t cflags, poff, vtag; 1282 int error, idx, nsegs, prod; 1283 #if NVLAN > 0 1284 struct m_tag *mtag; 1285 #endif 1286 1287 m = *m_head; 1288 cflags = vtag = 0; 1289 poff = 0; 1290 1291 prod = sc->alc_cdata.alc_tx_prod; 1292 txd = &sc->alc_cdata.alc_txdesc[prod]; 1293 txd_last = txd; 1294 map = txd->tx_dmamap; 1295 1296 error = bus_dmamap_load_mbuf(sc->sc_dmat, map, *m_head, BUS_DMA_NOWAIT); 1297 1298 if (error == EFBIG) { 1299 error = 0; 1300 1301 *m_head = m_pullup(*m_head, MHLEN); 1302 if (*m_head == NULL) { 1303 printf("%s: can't defrag TX mbuf\n", 1304 device_xname(sc->sc_dev)); 1305 return ENOBUFS; 1306 } 1307 1308 error = bus_dmamap_load_mbuf(sc->sc_dmat, map, *m_head, 1309 BUS_DMA_NOWAIT); 1310 1311 if (error != 0) { 1312 printf("%s: could not load defragged TX mbuf\n", 1313 device_xname(sc->sc_dev)); 1314 m_freem(*m_head); 1315 *m_head = NULL; 1316 return error; 1317 } 1318 } else if (error) { 1319 printf("%s: could not load TX mbuf\n", device_xname(sc->sc_dev)); 1320 return (error); 1321 } 1322 1323 nsegs = map->dm_nsegs; 1324 1325 if (nsegs == 0) { 1326 m_freem(*m_head); 1327 *m_head = NULL; 1328 return (EIO); 1329 } 1330 1331 /* Check descriptor overrun. */ 1332 if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) { 1333 bus_dmamap_unload(sc->sc_dmat, map); 1334 return (ENOBUFS); 1335 } 1336 bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, 1337 BUS_DMASYNC_PREWRITE); 1338 1339 m = *m_head; 1340 desc = NULL; 1341 idx = 0; 1342 #if NVLAN > 0 1343 /* Configure VLAN hardware tag insertion. */ 1344 if ((mtag = VLAN_OUTPUT_TAG(&sc->sc_ec, m))) { 1345 vtag = htons(VLAN_TAG_VALUE(mtag)); 1346 vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK; 1347 cflags |= TD_INS_VLAN_TAG; 1348 } 1349 #endif 1350 /* Configure Tx checksum offload. */ 1351 if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) { 1352 cflags |= TD_CUSTOM_CSUM; 1353 /* Set checksum start offset. */ 1354 cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) & 1355 TD_PLOAD_OFFSET_MASK; 1356 } 1357 for (; idx < nsegs; idx++) { 1358 desc = &sc->alc_rdata.alc_tx_ring[prod]; 1359 desc->len = 1360 htole32(TX_BYTES(map->dm_segs[idx].ds_len) | vtag); 1361 desc->flags = htole32(cflags); 1362 desc->addr = htole64(map->dm_segs[idx].ds_addr); 1363 sc->alc_cdata.alc_tx_cnt++; 1364 ALC_DESC_INC(prod, ALC_TX_RING_CNT); 1365 } 1366 /* Update producer index. */ 1367 sc->alc_cdata.alc_tx_prod = prod; 1368 1369 /* Finally set EOP on the last descriptor. */ 1370 prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT; 1371 desc = &sc->alc_rdata.alc_tx_ring[prod]; 1372 desc->flags |= htole32(TD_EOP); 1373 1374 /* Swap dmamap of the first and the last. */ 1375 txd = &sc->alc_cdata.alc_txdesc[prod]; 1376 map = txd_last->tx_dmamap; 1377 txd_last->tx_dmamap = txd->tx_dmamap; 1378 txd->tx_dmamap = map; 1379 txd->tx_m = m; 1380 1381 return (0); 1382 } 1383 1384 static void 1385 alc_start(struct ifnet *ifp) 1386 { 1387 struct alc_softc *sc = ifp->if_softc; 1388 struct mbuf *m_head; 1389 int enq; 1390 1391 if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) 1392 return; 1393 1394 /* Reclaim transmitted frames. */ 1395 if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT) 1396 alc_txeof(sc); 1397 1398 enq = 0; 1399 for (;;) { 1400 IFQ_DEQUEUE(&ifp->if_snd, m_head); 1401 if (m_head == NULL) 1402 break; 1403 1404 /* 1405 * Pack the data into the transmit ring. If we 1406 * don't have room, set the OACTIVE flag and wait 1407 * for the NIC to drain the ring. 1408 */ 1409 if (alc_encap(sc, &m_head)) { 1410 if (m_head == NULL) 1411 break; 1412 ifp->if_flags |= IFF_OACTIVE; 1413 break; 1414 } 1415 enq = 1; 1416 1417 /* 1418 * If there's a BPF listener, bounce a copy of this frame 1419 * to him. 1420 */ 1421 bpf_mtap(ifp, m_head); 1422 } 1423 1424 if (enq) { 1425 /* Sync descriptors. */ 1426 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_tx_ring_map, 0, 1427 sc->alc_cdata.alc_tx_ring_map->dm_mapsize, 1428 BUS_DMASYNC_PREWRITE); 1429 /* Kick. Assume we're using normal Tx priority queue. */ 1430 CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX, 1431 (sc->alc_cdata.alc_tx_prod << 1432 MBOX_TD_PROD_LO_IDX_SHIFT) & 1433 MBOX_TD_PROD_LO_IDX_MASK); 1434 /* Set a timeout in case the chip goes out to lunch. */ 1435 ifp->if_timer = ALC_TX_TIMEOUT; 1436 } 1437 } 1438 1439 static void 1440 alc_watchdog(struct ifnet *ifp) 1441 { 1442 struct alc_softc *sc = ifp->if_softc; 1443 1444 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) { 1445 printf("%s: watchdog timeout (missed link)\n", 1446 device_xname(sc->sc_dev)); 1447 ifp->if_oerrors++; 1448 alc_init(ifp); 1449 return; 1450 } 1451 1452 printf("%s: watchdog timeout\n", device_xname(sc->sc_dev)); 1453 ifp->if_oerrors++; 1454 alc_init(ifp); 1455 1456 if (!IFQ_IS_EMPTY(&ifp->if_snd)) 1457 alc_start(ifp); 1458 } 1459 1460 static int 1461 alc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1462 { 1463 struct alc_softc *sc = ifp->if_softc; 1464 int s, error = 0; 1465 1466 s = splnet(); 1467 1468 error = ether_ioctl(ifp, cmd, data); 1469 if (error == ENETRESET) { 1470 if (ifp->if_flags & IFF_RUNNING) 1471 alc_iff(sc); 1472 error = 0; 1473 } 1474 1475 splx(s); 1476 return (error); 1477 } 1478 1479 static void 1480 alc_mac_config(struct alc_softc *sc) 1481 { 1482 struct mii_data *mii; 1483 uint32_t reg; 1484 1485 mii = &sc->sc_miibus; 1486 reg = CSR_READ_4(sc, ALC_MAC_CFG); 1487 reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC | 1488 MAC_CFG_SPEED_MASK); 1489 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151 || 1490 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151_V2 || 1491 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B2) 1492 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW; 1493 /* Reprogram MAC with resolved speed/duplex. */ 1494 switch (IFM_SUBTYPE(mii->mii_media_active)) { 1495 case IFM_10_T: 1496 case IFM_100_TX: 1497 reg |= MAC_CFG_SPEED_10_100; 1498 break; 1499 case IFM_1000_T: 1500 reg |= MAC_CFG_SPEED_1000; 1501 break; 1502 } 1503 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 1504 reg |= MAC_CFG_FULL_DUPLEX; 1505 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 1506 reg |= MAC_CFG_TX_FC; 1507 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 1508 reg |= MAC_CFG_RX_FC; 1509 } 1510 CSR_WRITE_4(sc, ALC_MAC_CFG, reg); 1511 } 1512 1513 static void 1514 alc_stats_clear(struct alc_softc *sc) 1515 { 1516 struct smb sb, *smb; 1517 uint32_t *reg; 1518 int i; 1519 1520 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) { 1521 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_smb_map, 0, 1522 sc->alc_cdata.alc_smb_map->dm_mapsize, 1523 BUS_DMASYNC_POSTREAD); 1524 smb = sc->alc_rdata.alc_smb; 1525 /* Update done, clear. */ 1526 smb->updated = 0; 1527 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_smb_map, 0, 1528 sc->alc_cdata.alc_smb_map->dm_mapsize, 1529 BUS_DMASYNC_PREWRITE); 1530 } else { 1531 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered; 1532 reg++) { 1533 CSR_READ_4(sc, ALC_RX_MIB_BASE + i); 1534 i += sizeof(uint32_t); 1535 } 1536 /* Read Tx statistics. */ 1537 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes; 1538 reg++) { 1539 CSR_READ_4(sc, ALC_TX_MIB_BASE + i); 1540 i += sizeof(uint32_t); 1541 } 1542 } 1543 } 1544 1545 static void 1546 alc_stats_update(struct alc_softc *sc) 1547 { 1548 struct ifnet *ifp = &sc->sc_ec.ec_if; 1549 struct alc_hw_stats *stat; 1550 struct smb sb, *smb; 1551 uint32_t *reg; 1552 int i; 1553 1554 stat = &sc->alc_stats; 1555 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) { 1556 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_smb_map, 0, 1557 sc->alc_cdata.alc_smb_map->dm_mapsize, 1558 BUS_DMASYNC_POSTREAD); 1559 smb = sc->alc_rdata.alc_smb; 1560 if (smb->updated == 0) 1561 return; 1562 } else { 1563 smb = &sb; 1564 /* Read Rx statistics. */ 1565 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered; 1566 reg++) { 1567 *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i); 1568 i += sizeof(uint32_t); 1569 } 1570 /* Read Tx statistics. */ 1571 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes; 1572 reg++) { 1573 *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i); 1574 i += sizeof(uint32_t); 1575 } 1576 } 1577 1578 /* Rx stats. */ 1579 stat->rx_frames += smb->rx_frames; 1580 stat->rx_bcast_frames += smb->rx_bcast_frames; 1581 stat->rx_mcast_frames += smb->rx_mcast_frames; 1582 stat->rx_pause_frames += smb->rx_pause_frames; 1583 stat->rx_control_frames += smb->rx_control_frames; 1584 stat->rx_crcerrs += smb->rx_crcerrs; 1585 stat->rx_lenerrs += smb->rx_lenerrs; 1586 stat->rx_bytes += smb->rx_bytes; 1587 stat->rx_runts += smb->rx_runts; 1588 stat->rx_fragments += smb->rx_fragments; 1589 stat->rx_pkts_64 += smb->rx_pkts_64; 1590 stat->rx_pkts_65_127 += smb->rx_pkts_65_127; 1591 stat->rx_pkts_128_255 += smb->rx_pkts_128_255; 1592 stat->rx_pkts_256_511 += smb->rx_pkts_256_511; 1593 stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023; 1594 stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518; 1595 stat->rx_pkts_1519_max += smb->rx_pkts_1519_max; 1596 stat->rx_pkts_truncated += smb->rx_pkts_truncated; 1597 stat->rx_fifo_oflows += smb->rx_fifo_oflows; 1598 stat->rx_rrs_errs += smb->rx_rrs_errs; 1599 stat->rx_alignerrs += smb->rx_alignerrs; 1600 stat->rx_bcast_bytes += smb->rx_bcast_bytes; 1601 stat->rx_mcast_bytes += smb->rx_mcast_bytes; 1602 stat->rx_pkts_filtered += smb->rx_pkts_filtered; 1603 1604 /* Tx stats. */ 1605 stat->tx_frames += smb->tx_frames; 1606 stat->tx_bcast_frames += smb->tx_bcast_frames; 1607 stat->tx_mcast_frames += smb->tx_mcast_frames; 1608 stat->tx_pause_frames += smb->tx_pause_frames; 1609 stat->tx_excess_defer += smb->tx_excess_defer; 1610 stat->tx_control_frames += smb->tx_control_frames; 1611 stat->tx_deferred += smb->tx_deferred; 1612 stat->tx_bytes += smb->tx_bytes; 1613 stat->tx_pkts_64 += smb->tx_pkts_64; 1614 stat->tx_pkts_65_127 += smb->tx_pkts_65_127; 1615 stat->tx_pkts_128_255 += smb->tx_pkts_128_255; 1616 stat->tx_pkts_256_511 += smb->tx_pkts_256_511; 1617 stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023; 1618 stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518; 1619 stat->tx_pkts_1519_max += smb->tx_pkts_1519_max; 1620 stat->tx_single_colls += smb->tx_single_colls; 1621 stat->tx_multi_colls += smb->tx_multi_colls; 1622 stat->tx_late_colls += smb->tx_late_colls; 1623 stat->tx_excess_colls += smb->tx_excess_colls; 1624 stat->tx_abort += smb->tx_abort; 1625 stat->tx_underrun += smb->tx_underrun; 1626 stat->tx_desc_underrun += smb->tx_desc_underrun; 1627 stat->tx_lenerrs += smb->tx_lenerrs; 1628 stat->tx_pkts_truncated += smb->tx_pkts_truncated; 1629 stat->tx_bcast_bytes += smb->tx_bcast_bytes; 1630 stat->tx_mcast_bytes += smb->tx_mcast_bytes; 1631 1632 /* Update counters in ifnet. */ 1633 ifp->if_opackets += smb->tx_frames; 1634 1635 ifp->if_collisions += smb->tx_single_colls + 1636 smb->tx_multi_colls * 2 + smb->tx_late_colls + 1637 smb->tx_abort * HDPX_CFG_RETRY_DEFAULT; 1638 1639 /* 1640 * XXX 1641 * tx_pkts_truncated counter looks suspicious. It constantly 1642 * increments with no sign of Tx errors. This may indicate 1643 * the counter name is not correct one so I've removed the 1644 * counter in output errors. 1645 */ 1646 ifp->if_oerrors += smb->tx_abort + smb->tx_late_colls + 1647 smb->tx_underrun; 1648 1649 ifp->if_ipackets += smb->rx_frames; 1650 1651 ifp->if_ierrors += smb->rx_crcerrs + smb->rx_lenerrs + 1652 smb->rx_runts + smb->rx_pkts_truncated + 1653 smb->rx_fifo_oflows + smb->rx_rrs_errs + 1654 smb->rx_alignerrs; 1655 1656 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) { 1657 /* Update done, clear. */ 1658 smb->updated = 0; 1659 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_smb_map, 0, 1660 sc->alc_cdata.alc_smb_map->dm_mapsize, BUS_DMASYNC_PREWRITE); 1661 } 1662 } 1663 1664 static int 1665 alc_intr(void *arg) 1666 { 1667 struct alc_softc *sc = arg; 1668 struct ifnet *ifp = &sc->sc_ec.ec_if; 1669 uint32_t status; 1670 1671 status = CSR_READ_4(sc, ALC_INTR_STATUS); 1672 if ((status & ALC_INTRS) == 0) 1673 return (0); 1674 1675 /* Acknowledge and disable interrupts. */ 1676 CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT); 1677 1678 if (ifp->if_flags & IFF_RUNNING) { 1679 if (status & INTR_RX_PKT) { 1680 int error; 1681 1682 error = alc_rxintr(sc); 1683 if (error) { 1684 alc_init(ifp); 1685 return (0); 1686 } 1687 } 1688 1689 if (status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST | 1690 INTR_TXQ_TO_RST)) { 1691 if (status & INTR_DMA_RD_TO_RST) 1692 printf("%s: DMA read error! -- resetting\n", 1693 device_xname(sc->sc_dev)); 1694 if (status & INTR_DMA_WR_TO_RST) 1695 printf("%s: DMA write error! -- resetting\n", 1696 device_xname(sc->sc_dev)); 1697 if (status & INTR_TXQ_TO_RST) 1698 printf("%s: TxQ reset! -- resetting\n", 1699 device_xname(sc->sc_dev)); 1700 alc_init(ifp); 1701 return (0); 1702 } 1703 1704 alc_txeof(sc); 1705 if (!IFQ_IS_EMPTY(&ifp->if_snd)) 1706 alc_start(ifp); 1707 } 1708 1709 /* Re-enable interrupts. */ 1710 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF); 1711 return (1); 1712 } 1713 1714 static void 1715 alc_txeof(struct alc_softc *sc) 1716 { 1717 struct ifnet *ifp = &sc->sc_ec.ec_if; 1718 struct alc_txdesc *txd; 1719 uint32_t cons, prod; 1720 int prog; 1721 1722 if (sc->alc_cdata.alc_tx_cnt == 0) 1723 return; 1724 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_tx_ring_map, 0, 1725 sc->alc_cdata.alc_tx_ring_map->dm_mapsize, 1726 BUS_DMASYNC_POSTREAD); 1727 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) { 1728 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_cmb_map, 0, 1729 sc->alc_cdata.alc_cmb_map->dm_mapsize, 1730 BUS_DMASYNC_POSTREAD); 1731 prod = sc->alc_rdata.alc_cmb->cons; 1732 } else 1733 prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX); 1734 /* Assume we're using normal Tx priority queue. */ 1735 prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >> 1736 MBOX_TD_CONS_LO_IDX_SHIFT; 1737 cons = sc->alc_cdata.alc_tx_cons; 1738 /* 1739 * Go through our Tx list and free mbufs for those 1740 * frames which have been transmitted. 1741 */ 1742 for (prog = 0; cons != prod; prog++, 1743 ALC_DESC_INC(cons, ALC_TX_RING_CNT)) { 1744 if (sc->alc_cdata.alc_tx_cnt <= 0) 1745 break; 1746 prog++; 1747 ifp->if_flags &= ~IFF_OACTIVE; 1748 sc->alc_cdata.alc_tx_cnt--; 1749 txd = &sc->alc_cdata.alc_txdesc[cons]; 1750 if (txd->tx_m != NULL) { 1751 /* Reclaim transmitted mbufs. */ 1752 bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); 1753 m_freem(txd->tx_m); 1754 txd->tx_m = NULL; 1755 } 1756 } 1757 1758 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) 1759 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_cmb_map, 0, 1760 sc->alc_cdata.alc_cmb_map->dm_mapsize, BUS_DMASYNC_PREWRITE); 1761 sc->alc_cdata.alc_tx_cons = cons; 1762 /* 1763 * Unarm watchdog timer only when there is no pending 1764 * frames in Tx queue. 1765 */ 1766 if (sc->alc_cdata.alc_tx_cnt == 0) 1767 ifp->if_timer = 0; 1768 } 1769 1770 static int 1771 alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd, int init) 1772 { 1773 struct mbuf *m; 1774 bus_dmamap_t map; 1775 int error; 1776 1777 MGETHDR(m, init ? M_WAITOK : M_DONTWAIT, MT_DATA); 1778 if (m == NULL) 1779 return (ENOBUFS); 1780 MCLGET(m, init ? M_WAITOK : M_DONTWAIT); 1781 if (!(m->m_flags & M_EXT)) { 1782 m_freem(m); 1783 return (ENOBUFS); 1784 } 1785 1786 m->m_len = m->m_pkthdr.len = RX_BUF_SIZE_MAX; 1787 1788 error = bus_dmamap_load_mbuf(sc->sc_dmat, 1789 sc->alc_cdata.alc_rx_sparemap, m, BUS_DMA_NOWAIT); 1790 1791 if (error != 0) { 1792 if (!error) { 1793 bus_dmamap_unload(sc->sc_dmat, 1794 sc->alc_cdata.alc_rx_sparemap); 1795 error = EFBIG; 1796 printf("%s: too many segments?!\n", 1797 device_xname(sc->sc_dev)); 1798 } 1799 m_freem(m); 1800 1801 if (init) 1802 printf("%s: can't load RX mbuf\n", device_xname(sc->sc_dev)); 1803 1804 return (error); 1805 } 1806 1807 if (rxd->rx_m != NULL) { 1808 bus_dmamap_sync(sc->sc_dmat, rxd->rx_dmamap, 0, 1809 rxd->rx_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); 1810 bus_dmamap_unload(sc->sc_dmat, rxd->rx_dmamap); 1811 } 1812 map = rxd->rx_dmamap; 1813 rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap; 1814 sc->alc_cdata.alc_rx_sparemap = map; 1815 rxd->rx_m = m; 1816 rxd->rx_desc->addr = htole64(rxd->rx_dmamap->dm_segs[0].ds_addr); 1817 return (0); 1818 } 1819 1820 static int 1821 alc_rxintr(struct alc_softc *sc) 1822 { 1823 struct ifnet *ifp = &sc->sc_ec.ec_if; 1824 struct rx_rdesc *rrd; 1825 uint32_t nsegs, status; 1826 int rr_cons, prog; 1827 1828 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_rr_ring_map, 0, 1829 sc->alc_cdata.alc_rr_ring_map->dm_mapsize, BUS_DMASYNC_POSTREAD); 1830 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_rx_ring_map, 0, 1831 sc->alc_cdata.alc_rx_ring_map->dm_mapsize, BUS_DMASYNC_POSTREAD); 1832 rr_cons = sc->alc_cdata.alc_rr_cons; 1833 for (prog = 0; (ifp->if_flags & IFF_RUNNING) != 0;) { 1834 rrd = &sc->alc_rdata.alc_rr_ring[rr_cons]; 1835 status = le32toh(rrd->status); 1836 if ((status & RRD_VALID) == 0) 1837 break; 1838 nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo)); 1839 if (nsegs == 0) { 1840 /* This should not happen! */ 1841 if (alcdebug) 1842 printf("%s: unexpected segment count -- " 1843 "resetting\n", device_xname(sc->sc_dev)); 1844 return (EIO); 1845 } 1846 alc_rxeof(sc, rrd); 1847 /* Clear Rx return status. */ 1848 rrd->status = 0; 1849 ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT); 1850 sc->alc_cdata.alc_rx_cons += nsegs; 1851 sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT; 1852 prog += nsegs; 1853 } 1854 1855 if (prog > 0) { 1856 /* Update the consumer index. */ 1857 sc->alc_cdata.alc_rr_cons = rr_cons; 1858 /* Sync Rx return descriptors. */ 1859 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_rr_ring_map, 0, 1860 sc->alc_cdata.alc_rr_ring_map->dm_mapsize, 1861 BUS_DMASYNC_PREWRITE); 1862 /* 1863 * Sync updated Rx descriptors such that controller see 1864 * modified buffer addresses. 1865 */ 1866 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_rx_ring_map, 0, 1867 sc->alc_cdata.alc_rx_ring_map->dm_mapsize, 1868 BUS_DMASYNC_PREWRITE); 1869 /* 1870 * Let controller know availability of new Rx buffers. 1871 * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors 1872 * it may be possible to update ALC_MBOX_RD0_PROD_IDX 1873 * only when Rx buffer pre-fetching is required. In 1874 * addition we already set ALC_RX_RD_FREE_THRESH to 1875 * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However 1876 * it still seems that pre-fetching needs more 1877 * experimentation. 1878 */ 1879 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, 1880 sc->alc_cdata.alc_rx_cons); 1881 } 1882 1883 return (0); 1884 } 1885 1886 /* Receive a frame. */ 1887 static void 1888 alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd) 1889 { 1890 struct ifnet *ifp = &sc->sc_ec.ec_if; 1891 struct alc_rxdesc *rxd; 1892 struct mbuf *mp, *m; 1893 uint32_t rdinfo, status; 1894 int count, nsegs, rx_cons; 1895 1896 status = le32toh(rrd->status); 1897 rdinfo = le32toh(rrd->rdinfo); 1898 rx_cons = RRD_RD_IDX(rdinfo); 1899 nsegs = RRD_RD_CNT(rdinfo); 1900 1901 sc->alc_cdata.alc_rxlen = RRD_BYTES(status); 1902 if (status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) { 1903 /* 1904 * We want to pass the following frames to upper 1905 * layer regardless of error status of Rx return 1906 * ring. 1907 * 1908 * o IP/TCP/UDP checksum is bad. 1909 * o frame length and protocol specific length 1910 * does not match. 1911 * 1912 * Force network stack compute checksum for 1913 * errored frames. 1914 */ 1915 status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK; 1916 if ((status & (RRD_ERR_CRC | RRD_ERR_ALIGN | 1917 RRD_ERR_TRUNC | RRD_ERR_RUNT)) != 0) 1918 return; 1919 } 1920 1921 for (count = 0; count < nsegs; count++, 1922 ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) { 1923 rxd = &sc->alc_cdata.alc_rxdesc[rx_cons]; 1924 mp = rxd->rx_m; 1925 /* Add a new receive buffer to the ring. */ 1926 if (alc_newbuf(sc, rxd, 0) != 0) { 1927 ifp->if_iqdrops++; 1928 /* Reuse Rx buffers. */ 1929 if (sc->alc_cdata.alc_rxhead != NULL) 1930 m_freem(sc->alc_cdata.alc_rxhead); 1931 break; 1932 } 1933 1934 /* 1935 * Assume we've received a full sized frame. 1936 * Actual size is fixed when we encounter the end of 1937 * multi-segmented frame. 1938 */ 1939 mp->m_len = sc->alc_buf_size; 1940 1941 /* Chain received mbufs. */ 1942 if (sc->alc_cdata.alc_rxhead == NULL) { 1943 sc->alc_cdata.alc_rxhead = mp; 1944 sc->alc_cdata.alc_rxtail = mp; 1945 } else { 1946 mp->m_flags &= ~M_PKTHDR; 1947 sc->alc_cdata.alc_rxprev_tail = 1948 sc->alc_cdata.alc_rxtail; 1949 sc->alc_cdata.alc_rxtail->m_next = mp; 1950 sc->alc_cdata.alc_rxtail = mp; 1951 } 1952 1953 if (count == nsegs - 1) { 1954 /* Last desc. for this frame. */ 1955 m = sc->alc_cdata.alc_rxhead; 1956 m->m_flags |= M_PKTHDR; 1957 /* 1958 * It seems that L1C/L2C controller has no way 1959 * to tell hardware to strip CRC bytes. 1960 */ 1961 m->m_pkthdr.len = 1962 sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN; 1963 if (nsegs > 1) { 1964 /* Set last mbuf size. */ 1965 mp->m_len = sc->alc_cdata.alc_rxlen - 1966 (nsegs - 1) * sc->alc_buf_size; 1967 /* Remove the CRC bytes in chained mbufs. */ 1968 if (mp->m_len <= ETHER_CRC_LEN) { 1969 sc->alc_cdata.alc_rxtail = 1970 sc->alc_cdata.alc_rxprev_tail; 1971 sc->alc_cdata.alc_rxtail->m_len -= 1972 (ETHER_CRC_LEN - mp->m_len); 1973 sc->alc_cdata.alc_rxtail->m_next = NULL; 1974 m_freem(mp); 1975 } else { 1976 mp->m_len -= ETHER_CRC_LEN; 1977 } 1978 } else 1979 m->m_len = m->m_pkthdr.len; 1980 m->m_pkthdr.rcvif = ifp; 1981 #if NVLAN > 0 1982 /* 1983 * Due to hardware bugs, Rx checksum offloading 1984 * was intentionally disabled. 1985 */ 1986 if (status & RRD_VLAN_TAG) { 1987 u_int32_t vtag = RRD_VLAN(le32toh(rrd->vtag)); 1988 VLAN_INPUT_TAG(ifp, m, ntohs(vtag), ); 1989 } 1990 #endif 1991 1992 bpf_mtap(ifp, m); 1993 1994 { 1995 /* Pass it on. */ 1996 ether_input(ifp, m); 1997 } 1998 } 1999 } 2000 /* Reset mbuf chains. */ 2001 ALC_RXCHAIN_RESET(sc); 2002 } 2003 2004 static void 2005 alc_tick(void *xsc) 2006 { 2007 struct alc_softc *sc = xsc; 2008 struct mii_data *mii = &sc->sc_miibus; 2009 int s; 2010 2011 s = splnet(); 2012 mii_tick(mii); 2013 alc_stats_update(sc); 2014 splx(s); 2015 2016 callout_schedule(&sc->sc_tick_ch, hz); 2017 } 2018 2019 static void 2020 alc_reset(struct alc_softc *sc) 2021 { 2022 uint32_t reg; 2023 int i; 2024 2025 reg = CSR_READ_4(sc, ALC_MASTER_CFG) & 0xFFFF; 2026 reg |= MASTER_OOB_DIS_OFF | MASTER_RESET; 2027 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg); 2028 for (i = ALC_RESET_TIMEOUT; i > 0; i--) { 2029 DELAY(10); 2030 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0) 2031 break; 2032 } 2033 if (i == 0) 2034 printf("%s: master reset timeout!\n", device_xname(sc->sc_dev)); 2035 2036 for (i = ALC_RESET_TIMEOUT; i > 0; i--) { 2037 if ((reg = CSR_READ_4(sc, ALC_IDLE_STATUS)) == 0) 2038 break; 2039 DELAY(10); 2040 } 2041 2042 if (i == 0) 2043 printf("%s: reset timeout(0x%08x)!\n", device_xname(sc->sc_dev), 2044 reg); 2045 } 2046 2047 static int 2048 alc_init(struct ifnet *ifp) 2049 { 2050 struct alc_softc *sc = ifp->if_softc; 2051 struct mii_data *mii; 2052 uint8_t eaddr[ETHER_ADDR_LEN]; 2053 bus_addr_t paddr; 2054 uint32_t reg, rxf_hi, rxf_lo; 2055 int error; 2056 2057 /* 2058 * Cancel any pending I/O. 2059 */ 2060 alc_stop(ifp, 0); 2061 /* 2062 * Reset the chip to a known state. 2063 */ 2064 alc_reset(sc); 2065 2066 /* Initialize Rx descriptors. */ 2067 error = alc_init_rx_ring(sc); 2068 if (error != 0) { 2069 printf("%s: no memory for Rx buffers.\n", device_xname(sc->sc_dev)); 2070 alc_stop(ifp, 0); 2071 return (error); 2072 } 2073 alc_init_rr_ring(sc); 2074 alc_init_tx_ring(sc); 2075 alc_init_cmb(sc); 2076 alc_init_smb(sc); 2077 2078 /* Enable all clocks. */ 2079 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, 0); 2080 2081 /* Reprogram the station address. */ 2082 memcpy(eaddr, CLLADDR(ifp->if_sadl), sizeof(eaddr)); 2083 CSR_WRITE_4(sc, ALC_PAR0, 2084 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]); 2085 CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]); 2086 /* 2087 * Clear WOL status and disable all WOL feature as WOL 2088 * would interfere Rx operation under normal environments. 2089 */ 2090 CSR_READ_4(sc, ALC_WOL_CFG); 2091 CSR_WRITE_4(sc, ALC_WOL_CFG, 0); 2092 /* Set Tx descriptor base addresses. */ 2093 paddr = sc->alc_rdata.alc_tx_ring_paddr; 2094 CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr)); 2095 CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr)); 2096 /* We don't use high priority ring. */ 2097 CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0); 2098 /* Set Tx descriptor counter. */ 2099 CSR_WRITE_4(sc, ALC_TD_RING_CNT, 2100 (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK); 2101 /* Set Rx descriptor base addresses. */ 2102 paddr = sc->alc_rdata.alc_rx_ring_paddr; 2103 CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr)); 2104 CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr)); 2105 /* We use one Rx ring. */ 2106 CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0); 2107 CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0); 2108 CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0); 2109 /* Set Rx descriptor counter. */ 2110 CSR_WRITE_4(sc, ALC_RD_RING_CNT, 2111 (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK); 2112 2113 /* 2114 * Let hardware split jumbo frames into alc_max_buf_sized chunks. 2115 * if it do not fit the buffer size. Rx return descriptor holds 2116 * a counter that indicates how many fragments were made by the 2117 * hardware. The buffer size should be multiple of 8 bytes. 2118 * Since hardware has limit on the size of buffer size, always 2119 * use the maximum value. 2120 * For strict-alignment architectures make sure to reduce buffer 2121 * size by 8 bytes to make room for alignment fixup. 2122 */ 2123 sc->alc_buf_size = RX_BUF_SIZE_MAX; 2124 CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size); 2125 2126 paddr = sc->alc_rdata.alc_rr_ring_paddr; 2127 /* Set Rx return descriptor base addresses. */ 2128 CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr)); 2129 /* We use one Rx return ring. */ 2130 CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0); 2131 CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0); 2132 CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0); 2133 /* Set Rx return descriptor counter. */ 2134 CSR_WRITE_4(sc, ALC_RRD_RING_CNT, 2135 (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK); 2136 paddr = sc->alc_rdata.alc_cmb_paddr; 2137 CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr)); 2138 paddr = sc->alc_rdata.alc_smb_paddr; 2139 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr)); 2140 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr)); 2141 2142 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B) { 2143 /* Reconfigure SRAM - Vendor magic. */ 2144 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_LEN, 0x000002A0); 2145 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_LEN, 0x00000100); 2146 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_ADDR, 0x029F0000); 2147 CSR_WRITE_4(sc, ALC_SRAM_RD0_ADDR, 0x02BF02A0); 2148 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_ADDR, 0x03BF02C0); 2149 CSR_WRITE_4(sc, ALC_SRAM_TD_ADDR, 0x03DF03C0); 2150 CSR_WRITE_4(sc, ALC_TXF_WATER_MARK, 0x00000000); 2151 CSR_WRITE_4(sc, ALC_RD_DMA_CFG, 0x00000000); 2152 } 2153 2154 /* Tell hardware that we're ready to load DMA blocks. */ 2155 CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD); 2156 2157 /* Configure interrupt moderation timer. */ 2158 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT; 2159 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT; 2160 reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT; 2161 reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT; 2162 CSR_WRITE_4(sc, ALC_IM_TIMER, reg); 2163 /* 2164 * We don't want to automatic interrupt clear as task queue 2165 * for the interrupt should know interrupt status. 2166 */ 2167 reg = MASTER_SA_TIMER_ENB; 2168 if (ALC_USECS(sc->alc_int_rx_mod) != 0) 2169 reg |= MASTER_IM_RX_TIMER_ENB; 2170 if (ALC_USECS(sc->alc_int_tx_mod) != 0) 2171 reg |= MASTER_IM_TX_TIMER_ENB; 2172 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg); 2173 /* 2174 * Disable interrupt re-trigger timer. We don't want automatic 2175 * re-triggering of un-ACKed interrupts. 2176 */ 2177 CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0)); 2178 /* Configure CMB. */ 2179 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4); 2180 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) 2181 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000)); 2182 else 2183 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0)); 2184 /* 2185 * Hardware can be configured to issue SMB interrupt based 2186 * on programmed interval. Since there is a callout that is 2187 * invoked for every hz in driver we use that instead of 2188 * relying on periodic SMB interrupt. 2189 */ 2190 CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0)); 2191 /* Clear MAC statistics. */ 2192 alc_stats_clear(sc); 2193 2194 /* 2195 * Always use maximum frame size that controller can support. 2196 * Otherwise received frames that has larger frame length 2197 * than alc(4) MTU would be silently dropped in hardware. This 2198 * would make path-MTU discovery hard as sender wouldn't get 2199 * any responses from receiver. alc(4) supports 2200 * multi-fragmented frames on Rx path so it has no issue on 2201 * assembling fragmented frames. Using maximum frame size also 2202 * removes the need to reinitialize hardware when interface 2203 * MTU configuration was changed. 2204 * 2205 * Be conservative in what you do, be liberal in what you 2206 * accept from others - RFC 793. 2207 */ 2208 CSR_WRITE_4(sc, ALC_FRAME_SIZE, sc->alc_ident->max_framelen); 2209 2210 /* Disable header split(?) */ 2211 CSR_WRITE_4(sc, ALC_HDS_CFG, 0); 2212 2213 /* Configure IPG/IFG parameters. */ 2214 CSR_WRITE_4(sc, ALC_IPG_IFG_CFG, 2215 ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) & IPG_IFG_IPGT_MASK) | 2216 ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) & IPG_IFG_MIFG_MASK) | 2217 ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) & IPG_IFG_IPG1_MASK) | 2218 ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) & IPG_IFG_IPG2_MASK)); 2219 /* Set parameters for half-duplex media. */ 2220 CSR_WRITE_4(sc, ALC_HDPX_CFG, 2221 ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) & 2222 HDPX_CFG_LCOL_MASK) | 2223 ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) & 2224 HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN | 2225 ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) & 2226 HDPX_CFG_ABEBT_MASK) | 2227 ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) & 2228 HDPX_CFG_JAMIPG_MASK)); 2229 /* 2230 * Set TSO/checksum offload threshold. For frames that is 2231 * larger than this threshold, hardware wouldn't do 2232 * TSO/checksum offloading. 2233 */ 2234 CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH, 2235 (sc->alc_ident->max_framelen >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) & 2236 TSO_OFFLOAD_THRESH_MASK); 2237 /* Configure TxQ. */ 2238 reg = (alc_dma_burst[sc->alc_dma_rd_burst] << 2239 TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK; 2240 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B || 2241 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B2) 2242 reg >>= 1; 2243 reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) & 2244 TXQ_CFG_TD_BURST_MASK; 2245 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE); 2246 2247 /* Configure Rx free descriptor pre-fetching. */ 2248 CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH, 2249 ((RX_RD_FREE_THRESH_HI_DEFAULT << RX_RD_FREE_THRESH_HI_SHIFT) & 2250 RX_RD_FREE_THRESH_HI_MASK) | 2251 ((RX_RD_FREE_THRESH_LO_DEFAULT << RX_RD_FREE_THRESH_LO_SHIFT) & 2252 RX_RD_FREE_THRESH_LO_MASK)); 2253 2254 /* 2255 * Configure flow control parameters. 2256 * XON : 80% of Rx FIFO 2257 * XOFF : 30% of Rx FIFO 2258 */ 2259 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8131 || 2260 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8132) { 2261 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN); 2262 rxf_hi = (reg * 8) / 10; 2263 rxf_lo = (reg * 3) / 10; 2264 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH, 2265 ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) & 2266 RX_FIFO_PAUSE_THRESH_LO_MASK) | 2267 ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) & 2268 RX_FIFO_PAUSE_THRESH_HI_MASK)); 2269 } 2270 2271 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B || 2272 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151_V2) 2273 CSR_WRITE_4(sc, ALC_SERDES_LOCK, 2274 CSR_READ_4(sc, ALC_SERDES_LOCK) | SERDES_MAC_CLK_SLOWDOWN | 2275 SERDES_PHY_CLK_SLOWDOWN); 2276 2277 /* Disable RSS until I understand L1C/L2C's RSS logic. */ 2278 CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0); 2279 CSR_WRITE_4(sc, ALC_RSS_CPU, 0); 2280 2281 /* Configure RxQ. */ 2282 reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) & 2283 RXQ_CFG_RD_BURST_MASK; 2284 reg |= RXQ_CFG_RSS_MODE_DIS; 2285 if ((sc->alc_flags & ALC_FLAG_ASPM_MON) != 0) 2286 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_1M; 2287 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg); 2288 2289 /* Configure DMA parameters. */ 2290 reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI; 2291 reg |= sc->alc_rcb; 2292 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) 2293 reg |= DMA_CFG_CMB_ENB; 2294 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) 2295 reg |= DMA_CFG_SMB_ENB; 2296 else 2297 reg |= DMA_CFG_SMB_DIS; 2298 reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) << 2299 DMA_CFG_RD_BURST_SHIFT; 2300 reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) << 2301 DMA_CFG_WR_BURST_SHIFT; 2302 reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) & 2303 DMA_CFG_RD_DELAY_CNT_MASK; 2304 reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) & 2305 DMA_CFG_WR_DELAY_CNT_MASK; 2306 CSR_WRITE_4(sc, ALC_DMA_CFG, reg); 2307 2308 /* 2309 * Configure Tx/Rx MACs. 2310 * - Auto-padding for short frames. 2311 * - Enable CRC generation. 2312 * Actual reconfiguration of MAC for resolved speed/duplex 2313 * is followed after detection of link establishment. 2314 * AR813x/AR815x always does checksum computation regardless 2315 * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to 2316 * have bug in protocol field in Rx return structure so 2317 * these controllers can't handle fragmented frames. Disable 2318 * Rx checksum offloading until there is a newer controller 2319 * that has sane implementation. 2320 */ 2321 reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX | 2322 ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) & 2323 MAC_CFG_PREAMBLE_MASK); 2324 if (sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151 || 2325 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8151_V2 || 2326 sc->alc_ident->deviceid == PCI_PRODUCT_ATTANSIC_AR8152_B2) 2327 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW; 2328 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0) 2329 reg |= MAC_CFG_SPEED_10_100; 2330 else 2331 reg |= MAC_CFG_SPEED_1000; 2332 CSR_WRITE_4(sc, ALC_MAC_CFG, reg); 2333 2334 /* Set up the receive filter. */ 2335 alc_iff(sc); 2336 alc_rxvlan(sc); 2337 2338 /* Acknowledge all pending interrupts and clear it. */ 2339 CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS); 2340 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF); 2341 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0); 2342 2343 sc->alc_flags &= ~ALC_FLAG_LINK; 2344 /* Switch to the current media. */ 2345 mii = &sc->sc_miibus; 2346 mii_mediachg(mii); 2347 2348 callout_schedule(&sc->sc_tick_ch, hz); 2349 2350 ifp->if_flags |= IFF_RUNNING; 2351 ifp->if_flags &= ~IFF_OACTIVE; 2352 2353 return (0); 2354 } 2355 2356 static void 2357 alc_stop(struct ifnet *ifp, int disable) 2358 { 2359 struct alc_softc *sc = ifp->if_softc; 2360 struct alc_txdesc *txd; 2361 struct alc_rxdesc *rxd; 2362 uint32_t reg; 2363 int i; 2364 2365 callout_stop(&sc->sc_tick_ch); 2366 2367 /* 2368 * Mark the interface down and cancel the watchdog timer. 2369 */ 2370 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2371 ifp->if_timer = 0; 2372 2373 sc->alc_flags &= ~ALC_FLAG_LINK; 2374 2375 alc_stats_update(sc); 2376 2377 mii_down(&sc->sc_miibus); 2378 2379 /* Disable interrupts. */ 2380 CSR_WRITE_4(sc, ALC_INTR_MASK, 0); 2381 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF); 2382 alc_stop_queue(sc); 2383 2384 /* Disable DMA. */ 2385 reg = CSR_READ_4(sc, ALC_DMA_CFG); 2386 reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB); 2387 reg |= DMA_CFG_SMB_DIS; 2388 CSR_WRITE_4(sc, ALC_DMA_CFG, reg); 2389 DELAY(1000); 2390 2391 /* Stop Rx/Tx MACs. */ 2392 alc_stop_mac(sc); 2393 2394 /* Disable interrupts which might be touched in taskq handler. */ 2395 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF); 2396 2397 /* Reclaim Rx buffers that have been processed. */ 2398 if (sc->alc_cdata.alc_rxhead != NULL) 2399 m_freem(sc->alc_cdata.alc_rxhead); 2400 ALC_RXCHAIN_RESET(sc); 2401 /* 2402 * Free Tx/Rx mbufs still in the queues. 2403 */ 2404 for (i = 0; i < ALC_RX_RING_CNT; i++) { 2405 rxd = &sc->alc_cdata.alc_rxdesc[i]; 2406 if (rxd->rx_m != NULL) { 2407 bus_dmamap_unload(sc->sc_dmat, rxd->rx_dmamap); 2408 m_freem(rxd->rx_m); 2409 rxd->rx_m = NULL; 2410 } 2411 } 2412 for (i = 0; i < ALC_TX_RING_CNT; i++) { 2413 txd = &sc->alc_cdata.alc_txdesc[i]; 2414 if (txd->tx_m != NULL) { 2415 bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); 2416 m_freem(txd->tx_m); 2417 txd->tx_m = NULL; 2418 } 2419 } 2420 } 2421 2422 static void 2423 alc_stop_mac(struct alc_softc *sc) 2424 { 2425 uint32_t reg; 2426 int i; 2427 2428 /* Disable Rx/Tx MAC. */ 2429 reg = CSR_READ_4(sc, ALC_MAC_CFG); 2430 if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) { 2431 reg &= ~(MAC_CFG_TX_ENB | MAC_CFG_RX_ENB); 2432 CSR_WRITE_4(sc, ALC_MAC_CFG, reg); 2433 } 2434 for (i = ALC_TIMEOUT; i > 0; i--) { 2435 reg = CSR_READ_4(sc, ALC_IDLE_STATUS); 2436 if (reg == 0) 2437 break; 2438 DELAY(10); 2439 } 2440 if (i == 0) 2441 printf("%s: could not disable Rx/Tx MAC(0x%08x)!\n", 2442 device_xname(sc->sc_dev), reg); 2443 } 2444 2445 static void 2446 alc_start_queue(struct alc_softc *sc) 2447 { 2448 uint32_t qcfg[] = { 2449 0, 2450 RXQ_CFG_QUEUE0_ENB, 2451 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB, 2452 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB, 2453 RXQ_CFG_ENB 2454 }; 2455 uint32_t cfg; 2456 2457 /* Enable RxQ. */ 2458 cfg = CSR_READ_4(sc, ALC_RXQ_CFG); 2459 cfg &= ~RXQ_CFG_ENB; 2460 cfg |= qcfg[1]; 2461 CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg); 2462 /* Enable TxQ. */ 2463 cfg = CSR_READ_4(sc, ALC_TXQ_CFG); 2464 cfg |= TXQ_CFG_ENB; 2465 CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg); 2466 } 2467 2468 static void 2469 alc_stop_queue(struct alc_softc *sc) 2470 { 2471 uint32_t reg; 2472 int i; 2473 2474 /* Disable RxQ. */ 2475 reg = CSR_READ_4(sc, ALC_RXQ_CFG); 2476 if ((reg & RXQ_CFG_ENB) != 0) { 2477 reg &= ~RXQ_CFG_ENB; 2478 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg); 2479 } 2480 /* Disable TxQ. */ 2481 reg = CSR_READ_4(sc, ALC_TXQ_CFG); 2482 if ((reg & TXQ_CFG_ENB) != 0) { 2483 reg &= ~TXQ_CFG_ENB; 2484 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg); 2485 } 2486 for (i = ALC_TIMEOUT; i > 0; i--) { 2487 reg = CSR_READ_4(sc, ALC_IDLE_STATUS); 2488 if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0) 2489 break; 2490 DELAY(10); 2491 } 2492 if (i == 0) 2493 printf("%s: could not disable RxQ/TxQ (0x%08x)!\n", 2494 device_xname(sc->sc_dev), reg); 2495 } 2496 2497 static void 2498 alc_init_tx_ring(struct alc_softc *sc) 2499 { 2500 struct alc_ring_data *rd; 2501 struct alc_txdesc *txd; 2502 int i; 2503 2504 sc->alc_cdata.alc_tx_prod = 0; 2505 sc->alc_cdata.alc_tx_cons = 0; 2506 sc->alc_cdata.alc_tx_cnt = 0; 2507 2508 rd = &sc->alc_rdata; 2509 memset(rd->alc_tx_ring, 0, ALC_TX_RING_SZ); 2510 for (i = 0; i < ALC_TX_RING_CNT; i++) { 2511 txd = &sc->alc_cdata.alc_txdesc[i]; 2512 txd->tx_m = NULL; 2513 } 2514 2515 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_tx_ring_map, 0, 2516 sc->alc_cdata.alc_tx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2517 } 2518 2519 static int 2520 alc_init_rx_ring(struct alc_softc *sc) 2521 { 2522 struct alc_ring_data *rd; 2523 struct alc_rxdesc *rxd; 2524 int i; 2525 2526 sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1; 2527 rd = &sc->alc_rdata; 2528 memset(rd->alc_rx_ring, 0, ALC_RX_RING_SZ); 2529 for (i = 0; i < ALC_RX_RING_CNT; i++) { 2530 rxd = &sc->alc_cdata.alc_rxdesc[i]; 2531 rxd->rx_m = NULL; 2532 rxd->rx_desc = &rd->alc_rx_ring[i]; 2533 if (alc_newbuf(sc, rxd, 1) != 0) 2534 return (ENOBUFS); 2535 } 2536 2537 /* 2538 * Since controller does not update Rx descriptors, driver 2539 * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE 2540 * is enough to ensure coherence. 2541 */ 2542 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_rx_ring_map, 0, 2543 sc->alc_cdata.alc_rx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2544 /* Let controller know availability of new Rx buffers. */ 2545 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons); 2546 2547 return (0); 2548 } 2549 2550 static void 2551 alc_init_rr_ring(struct alc_softc *sc) 2552 { 2553 struct alc_ring_data *rd; 2554 2555 sc->alc_cdata.alc_rr_cons = 0; 2556 ALC_RXCHAIN_RESET(sc); 2557 2558 rd = &sc->alc_rdata; 2559 memset(rd->alc_rr_ring, 0, ALC_RR_RING_SZ); 2560 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_rr_ring_map, 0, 2561 sc->alc_cdata.alc_rr_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2562 } 2563 2564 static void 2565 alc_init_cmb(struct alc_softc *sc) 2566 { 2567 struct alc_ring_data *rd; 2568 2569 rd = &sc->alc_rdata; 2570 memset(rd->alc_cmb, 0, ALC_CMB_SZ); 2571 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_cmb_map, 0, 2572 sc->alc_cdata.alc_cmb_map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2573 } 2574 2575 static void 2576 alc_init_smb(struct alc_softc *sc) 2577 { 2578 struct alc_ring_data *rd; 2579 2580 rd = &sc->alc_rdata; 2581 memset(rd->alc_smb, 0, ALC_SMB_SZ); 2582 bus_dmamap_sync(sc->sc_dmat, sc->alc_cdata.alc_smb_map, 0, 2583 sc->alc_cdata.alc_smb_map->dm_mapsize, BUS_DMASYNC_PREWRITE); 2584 } 2585 2586 static void 2587 alc_rxvlan(struct alc_softc *sc) 2588 { 2589 uint32_t reg; 2590 2591 reg = CSR_READ_4(sc, ALC_MAC_CFG); 2592 if (sc->sc_ec.ec_capenable & ETHERCAP_VLAN_HWTAGGING) 2593 reg |= MAC_CFG_VLAN_TAG_STRIP; 2594 else 2595 reg &= ~MAC_CFG_VLAN_TAG_STRIP; 2596 CSR_WRITE_4(sc, ALC_MAC_CFG, reg); 2597 } 2598 2599 static void 2600 alc_iff(struct alc_softc *sc) 2601 { 2602 struct ethercom *ec = &sc->sc_ec; 2603 struct ifnet *ifp = &ec->ec_if; 2604 struct ether_multi *enm; 2605 struct ether_multistep step; 2606 uint32_t crc; 2607 uint32_t mchash[2]; 2608 uint32_t rxcfg; 2609 2610 rxcfg = CSR_READ_4(sc, ALC_MAC_CFG); 2611 rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC); 2612 ifp->if_flags &= ~IFF_ALLMULTI; 2613 2614 /* 2615 * Always accept broadcast frames. 2616 */ 2617 rxcfg |= MAC_CFG_BCAST; 2618 2619 if (ifp->if_flags & IFF_PROMISC || ec->ec_multicnt > 0) { 2620 ifp->if_flags |= IFF_ALLMULTI; 2621 if (ifp->if_flags & IFF_PROMISC) 2622 rxcfg |= MAC_CFG_PROMISC; 2623 else 2624 rxcfg |= MAC_CFG_ALLMULTI; 2625 mchash[0] = mchash[1] = 0xFFFFFFFF; 2626 } else { 2627 /* Program new filter. */ 2628 memset(mchash, 0, sizeof(mchash)); 2629 2630 ETHER_FIRST_MULTI(step, ec, enm); 2631 while (enm != NULL) { 2632 crc = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); 2633 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f); 2634 ETHER_NEXT_MULTI(step, enm); 2635 } 2636 } 2637 2638 CSR_WRITE_4(sc, ALC_MAR0, mchash[0]); 2639 CSR_WRITE_4(sc, ALC_MAR1, mchash[1]); 2640 CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg); 2641 } 2642 2643 MODULE(MODULE_CLASS_DRIVER, if_alc, "pci"); 2644 2645 #ifdef _MODULE 2646 #include "ioconf.c" 2647 #endif 2648 2649 static int 2650 if_alc_modcmd(modcmd_t cmd, void *opaque) 2651 { 2652 int error = 0; 2653 2654 switch (cmd) { 2655 case MODULE_CMD_INIT: 2656 #ifdef _MODULE 2657 error = config_init_component(cfdriver_ioconf_if_alc, 2658 cfattach_ioconf_if_alc, cfdata_ioconf_if_alc); 2659 #endif 2660 return error; 2661 case MODULE_CMD_FINI: 2662 #ifdef _MODULE 2663 error = config_fini_component(cfdriver_ioconf_if_alc, 2664 cfattach_ioconf_if_alc, cfdata_ioconf_if_alc); 2665 #endif 2666 return error; 2667 default: 2668 return ENOTTY; 2669 } 2670 } 2671
Indexes created Thu Sep 25 08:09:54 GMT 2025