Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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sys/dev/netif/ae/if_ae.c
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1 /*- 2 * Copyright (c) 2008 Stanislav Sedov <stas@FreeBSD.org>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 * 25 * Driver for Attansic Technology Corp. L2 FastEthernet adapter. 26 * 27 * This driver is heavily based on age(4) Attansic L1 driver by Pyun YongHyeon. 28 * 29 * $FreeBSD: src/sys/dev/ae/if_ae.c,v 1.1.2.3.2.1 2009/04/15 03:14:26 kensmith Exp $ 30 */ 31 32 #include <sys/param.h> 33 #include <sys/endian.h> 34 #include <sys/kernel.h> 35 #include <sys/bus.h> 36 #include <sys/interrupt.h> 37 #include <sys/malloc.h> 38 #include <sys/proc.h> 39 #include <sys/rman.h> 40 #include <sys/serialize.h> 41 #include <sys/socket.h> 42 #include <sys/sockio.h> 43 #include <sys/sysctl.h> 44 45 #include <net/ethernet.h> 46 #include <net/if.h> 47 #include <net/bpf.h> 48 #include <net/if_arp.h> 49 #include <net/if_dl.h> 50 #include <net/if_media.h> 51 #include <net/ifq_var.h> 52 #include <net/vlan/if_vlan_var.h> 53 #include <net/vlan/if_vlan_ether.h> 54 55 #include <bus/pci/pcireg.h> 56 #include <bus/pci/pcivar.h> 57 #include "pcidevs.h" 58 59 #include <dev/netif/mii_layer/miivar.h> 60 61 #include <dev/netif/ae/if_aereg.h> 62 #include <dev/netif/ae/if_aevar.h> 63 64 /* "device miibus" required. See GENERIC if you get errors here. */ 65 #include "miibus_if.h" 66 67 /* 68 * Devices supported by this driver. 69 */ 70 static const struct ae_dev { 71 uint16_t ae_vendorid; 72 uint16_t ae_deviceid; 73 const char *ae_name; 74 } ae_devs[] = { 75 { VENDORID_ATTANSIC, DEVICEID_ATTANSIC_L2, 76 "Attansic Technology Corp, L2 Fast Ethernet" }, 77 /* Required last entry */ 78 { 0, 0, NULL } 79 }; 80 81 82 static int ae_probe(device_t); 83 static int ae_attach(device_t); 84 static int ae_detach(device_t); 85 static int ae_shutdown(device_t); 86 static int ae_suspend(device_t); 87 static int ae_resume(device_t); 88 static int ae_miibus_readreg(device_t, int, int); 89 static int ae_miibus_writereg(device_t, int, int, int); 90 static void ae_miibus_statchg(device_t); 91 92 static int ae_mediachange(struct ifnet *); 93 static void ae_mediastatus(struct ifnet *, struct ifmediareq *); 94 static void ae_init(void *); 95 static void ae_start(struct ifnet *, struct ifaltq_subque *); 96 static int ae_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *); 97 static void ae_watchdog(struct ifnet *); 98 static void ae_stop(struct ae_softc *); 99 static void ae_tick(void *); 100 101 static void ae_intr(void *); 102 static void ae_tx_intr(struct ae_softc *); 103 static void ae_rx_intr(struct ae_softc *); 104 static int ae_rxeof(struct ae_softc *, struct ae_rxd *); 105 106 static int ae_encap(struct ae_softc *, struct mbuf **); 107 static void ae_sysctl_node(struct ae_softc *); 108 static void ae_phy_reset(struct ae_softc *); 109 static int ae_reset(struct ae_softc *); 110 static void ae_pcie_init(struct ae_softc *); 111 static void ae_get_eaddr(struct ae_softc *); 112 static void ae_dma_free(struct ae_softc *); 113 static int ae_dma_alloc(struct ae_softc *); 114 static void ae_mac_config(struct ae_softc *); 115 static void ae_stop_rxmac(struct ae_softc *); 116 static void ae_stop_txmac(struct ae_softc *); 117 static void ae_rxfilter(struct ae_softc *); 118 static void ae_rxvlan(struct ae_softc *); 119 static void ae_update_stats_rx(uint16_t, struct ae_stats *); 120 static void ae_update_stats_tx(uint16_t, struct ae_stats *); 121 static void ae_powersave_disable(struct ae_softc *); 122 static void ae_powersave_enable(struct ae_softc *); 123 124 static device_method_t ae_methods[] = { 125 /* Device interface. */ 126 DEVMETHOD(device_probe, ae_probe), 127 DEVMETHOD(device_attach, ae_attach), 128 DEVMETHOD(device_detach, ae_detach), 129 DEVMETHOD(device_shutdown, ae_shutdown), 130 DEVMETHOD(device_suspend, ae_suspend), 131 DEVMETHOD(device_resume, ae_resume), 132 133 /* Bus interface. */ 134 DEVMETHOD(bus_print_child, bus_generic_print_child), 135 DEVMETHOD(bus_driver_added, bus_generic_driver_added), 136 137 /* MII interface. */ 138 DEVMETHOD(miibus_readreg, ae_miibus_readreg), 139 DEVMETHOD(miibus_writereg, ae_miibus_writereg), 140 DEVMETHOD(miibus_statchg, ae_miibus_statchg), 141 { NULL, NULL } 142 }; 143 144 static driver_t ae_driver = { 145 "ae", 146 ae_methods, 147 sizeof(struct ae_softc) 148 }; 149 150 static devclass_t ae_devclass; 151 DECLARE_DUMMY_MODULE(if_ae); 152 MODULE_DEPEND(if_ae, miibus, 1, 1, 1); 153 DRIVER_MODULE(if_ae, pci, ae_driver, ae_devclass, NULL, NULL); 154 DRIVER_MODULE(miibus, ae, miibus_driver, miibus_devclass, NULL, NULL); 155 156 /* Register access macros. */ 157 #define AE_WRITE_4(_sc, reg, val) \ 158 bus_space_write_4((_sc)->ae_mem_bt, (_sc)->ae_mem_bh, (reg), (val)) 159 #define AE_WRITE_2(_sc, reg, val) \ 160 bus_space_write_2((_sc)->ae_mem_bt, (_sc)->ae_mem_bh, (reg), (val)) 161 #define AE_WRITE_1(_sc, reg, val) \ 162 bus_space_write_1((_sc)->ae_mem_bt, (_sc)->ae_mem_bh, (reg), (val)) 163 #define AE_READ_4(_sc, reg) \ 164 bus_space_read_4((_sc)->ae_mem_bt, (_sc)->ae_mem_bh, (reg)) 165 #define AE_READ_2(_sc, reg) \ 166 bus_space_read_2((_sc)->ae_mem_bt, (_sc)->ae_mem_bh, (reg)) 167 #define AE_READ_1(_sc, reg) \ 168 bus_space_read_1((_sc)->ae_mem_bt, (_sc)->ae_mem_bh, (reg)) 169 170 #define AE_PHY_READ(sc, reg) \ 171 ae_miibus_readreg(sc->ae_dev, 0, reg) 172 #define AE_PHY_WRITE(sc, reg, val) \ 173 ae_miibus_writereg(sc->ae_dev, 0, reg, val) 174 #define AE_CHECK_EADDR_VALID(eaddr) \ 175 ((eaddr[0] == 0 && eaddr[1] == 0) || \ 176 (eaddr[0] == 0xffffffff && eaddr[1] == 0xffff)) 177 #define AE_RXD_VLAN(vtag) \ 178 (((vtag) >> 4) | (((vtag) & 0x07) << 13) | (((vtag) & 0x08) << 9)) 179 #define AE_TXD_VLAN(vtag) \ 180 (((vtag) << 4) | (((vtag) >> 13) & 0x07) | (((vtag) >> 9) & 0x08)) 181 182 /* 183 * ae statistics. 184 */ 185 #define STATS_ENTRY(node, desc, field) \ 186 { node, desc, offsetof(struct ae_stats, field) } 187 struct { 188 const char *node; 189 const char *desc; 190 intptr_t offset; 191 } ae_stats_tx[] = { 192 STATS_ENTRY("bcast", "broadcast frames", tx_bcast), 193 STATS_ENTRY("mcast", "multicast frames", tx_mcast), 194 STATS_ENTRY("pause", "PAUSE frames", tx_pause), 195 STATS_ENTRY("control", "control frames", tx_ctrl), 196 STATS_ENTRY("defers", "deferrals occuried", tx_defer), 197 STATS_ENTRY("exc_defers", "excessive deferrals occuried", tx_excdefer), 198 STATS_ENTRY("singlecols", "single collisions occuried", tx_singlecol), 199 STATS_ENTRY("multicols", "multiple collisions occuried", tx_multicol), 200 STATS_ENTRY("latecols", "late collisions occuried", tx_latecol), 201 STATS_ENTRY("aborts", "transmit aborts due collisions", tx_abortcol), 202 STATS_ENTRY("underruns", "Tx FIFO underruns", tx_underrun) 203 }, ae_stats_rx[] = { 204 STATS_ENTRY("bcast", "broadcast frames", rx_bcast), 205 STATS_ENTRY("mcast", "multicast frames", rx_mcast), 206 STATS_ENTRY("pause", "PAUSE frames", rx_pause), 207 STATS_ENTRY("control", "control frames", rx_ctrl), 208 STATS_ENTRY("crc_errors", "frames with CRC errors", rx_crcerr), 209 STATS_ENTRY("code_errors", "frames with invalid opcode", rx_codeerr), 210 STATS_ENTRY("runt", "runt frames", rx_runt), 211 STATS_ENTRY("frag", "fragmented frames", rx_frag), 212 STATS_ENTRY("align_errors", "frames with alignment errors", rx_align), 213 STATS_ENTRY("truncated", "frames truncated due to Rx FIFO inderrun", 214 rx_trunc) 215 }; 216 #define AE_STATS_RX_LEN NELEM(ae_stats_rx) 217 #define AE_STATS_TX_LEN NELEM(ae_stats_tx) 218 219 static void 220 ae_stop(struct ae_softc *sc) 221 { 222 struct ifnet *ifp = &sc->arpcom.ac_if; 223 int i; 224 225 ASSERT_SERIALIZED(ifp->if_serializer); 226 227 ifp->if_flags &= ~IFF_RUNNING; 228 ifq_clr_oactive(&ifp->if_snd); 229 ifp->if_timer = 0; 230 231 sc->ae_flags &= ~AE_FLAG_LINK; 232 callout_stop(&sc->ae_tick_ch); 233 234 /* 235 * Clear and disable interrupts. 236 */ 237 AE_WRITE_4(sc, AE_IMR_REG, 0); 238 AE_WRITE_4(sc, AE_ISR_REG, 0xffffffff); 239 240 /* 241 * Stop Rx/Tx MACs. 242 */ 243 ae_stop_txmac(sc); 244 ae_stop_rxmac(sc); 245 246 /* 247 * Stop DMA engines. 248 */ 249 AE_WRITE_1(sc, AE_DMAREAD_REG, ~AE_DMAREAD_EN); 250 AE_WRITE_1(sc, AE_DMAWRITE_REG, ~AE_DMAWRITE_EN); 251 252 /* 253 * Wait for everything to enter idle state. 254 */ 255 for (i = 0; i < AE_IDLE_TIMEOUT; i++) { 256 if (AE_READ_4(sc, AE_IDLE_REG) == 0) 257 break; 258 DELAY(100); 259 } 260 if (i == AE_IDLE_TIMEOUT) 261 if_printf(ifp, "could not enter idle state in stop.\n"); 262 } 263 264 static void 265 ae_stop_rxmac(struct ae_softc *sc) 266 { 267 uint32_t val; 268 int i; 269 270 /* 271 * Stop Rx MAC engine. 272 */ 273 val = AE_READ_4(sc, AE_MAC_REG); 274 if ((val & AE_MAC_RX_EN) != 0) { 275 val &= ~AE_MAC_RX_EN; 276 AE_WRITE_4(sc, AE_MAC_REG, val); 277 } 278 279 /* 280 * Stop Rx DMA engine. 281 */ 282 if (AE_READ_1(sc, AE_DMAWRITE_REG) == AE_DMAWRITE_EN) 283 AE_WRITE_1(sc, AE_DMAWRITE_REG, 0); 284 285 /* 286 * Wait for IDLE state. 287 */ 288 for (i = 0; i < AE_IDLE_TIMEOUT; i--) { 289 val = AE_READ_4(sc, AE_IDLE_REG); 290 if ((val & (AE_IDLE_RXMAC | AE_IDLE_DMAWRITE)) == 0) 291 break; 292 DELAY(100); 293 } 294 if (i == AE_IDLE_TIMEOUT) { 295 if_printf(&sc->arpcom.ac_if, 296 "timed out while stopping Rx MAC.\n"); 297 } 298 } 299 300 static void 301 ae_stop_txmac(struct ae_softc *sc) 302 { 303 uint32_t val; 304 int i; 305 306 /* 307 * Stop Tx MAC engine. 308 */ 309 val = AE_READ_4(sc, AE_MAC_REG); 310 if ((val & AE_MAC_TX_EN) != 0) { 311 val &= ~AE_MAC_TX_EN; 312 AE_WRITE_4(sc, AE_MAC_REG, val); 313 } 314 315 /* 316 * Stop Tx DMA engine. 317 */ 318 if (AE_READ_1(sc, AE_DMAREAD_REG) == AE_DMAREAD_EN) 319 AE_WRITE_1(sc, AE_DMAREAD_REG, 0); 320 321 /* 322 * Wait for IDLE state. 323 */ 324 for (i = 0; i < AE_IDLE_TIMEOUT; i--) { 325 val = AE_READ_4(sc, AE_IDLE_REG); 326 if ((val & (AE_IDLE_TXMAC | AE_IDLE_DMAREAD)) == 0) 327 break; 328 DELAY(100); 329 } 330 if (i == AE_IDLE_TIMEOUT) { 331 if_printf(&sc->arpcom.ac_if, 332 "timed out while stopping Tx MAC.\n"); 333 } 334 } 335 336 /* 337 * Callback from MII layer when media changes. 338 */ 339 static void 340 ae_miibus_statchg(device_t dev) 341 { 342 struct ae_softc *sc = device_get_softc(dev); 343 struct ifnet *ifp = &sc->arpcom.ac_if; 344 struct mii_data *mii; 345 uint32_t val; 346 347 ASSERT_SERIALIZED(ifp->if_serializer); 348 349 if ((ifp->if_flags & IFF_RUNNING) == 0) 350 return; 351 352 mii = device_get_softc(sc->ae_miibus); 353 sc->ae_flags &= ~AE_FLAG_LINK; 354 if ((mii->mii_media_status & IFM_AVALID) != 0) { 355 switch (IFM_SUBTYPE(mii->mii_media_active)) { 356 case IFM_10_T: 357 case IFM_100_TX: 358 sc->ae_flags |= AE_FLAG_LINK; 359 break; 360 default: 361 break; 362 } 363 } 364 365 /* Stop Rx/Tx MACs. */ 366 ae_stop_rxmac(sc); 367 ae_stop_txmac(sc); 368 369 /* Program MACs with resolved speed/duplex/flow-control. */ 370 if ((sc->ae_flags & AE_FLAG_LINK) != 0) { 371 ae_mac_config(sc); 372 373 /* 374 * Restart DMA engines. 375 */ 376 AE_WRITE_1(sc, AE_DMAREAD_REG, AE_DMAREAD_EN); 377 AE_WRITE_1(sc, AE_DMAWRITE_REG, AE_DMAWRITE_EN); 378 379 /* 380 * Enable Rx and Tx MACs. 381 */ 382 val = AE_READ_4(sc, AE_MAC_REG); 383 val |= AE_MAC_TX_EN | AE_MAC_RX_EN; 384 AE_WRITE_4(sc, AE_MAC_REG, val); 385 } 386 } 387 388 static void 389 ae_sysctl_node(struct ae_softc *sc) 390 { 391 struct sysctl_ctx_list *ctx; 392 struct sysctl_oid *root, *stats, *stats_rx, *stats_tx; 393 struct ae_stats *ae_stats; 394 unsigned int i; 395 396 ae_stats = &sc->stats; 397 sysctl_ctx_init(&sc->ae_sysctl_ctx); 398 sc->ae_sysctl_tree = SYSCTL_ADD_NODE(&sc->ae_sysctl_ctx, 399 SYSCTL_STATIC_CHILDREN(_hw), OID_AUTO, 400 device_get_nameunit(sc->ae_dev), 401 CTLFLAG_RD, 0, ""); 402 if (sc->ae_sysctl_tree == NULL) { 403 device_printf(sc->ae_dev, "can't add sysctl node\n"); 404 return; 405 } 406 ctx = &sc->ae_sysctl_ctx; 407 root = sc->ae_sysctl_tree; 408 409 stats = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(root), OID_AUTO, "stats", 410 CTLFLAG_RD, NULL, "ae statistics"); 411 if (stats == NULL) { 412 device_printf(sc->ae_dev, "can't add stats sysctl node\n"); 413 return; 414 } 415 416 /* 417 * Receiver statistcics. 418 */ 419 stats_rx = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(stats), OID_AUTO, "rx", 420 CTLFLAG_RD, NULL, "Rx MAC statistics"); 421 if (stats_rx != NULL) { 422 for (i = 0; i < AE_STATS_RX_LEN; i++) { 423 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(stats_rx), 424 OID_AUTO, ae_stats_rx[i].node, CTLFLAG_RD, 425 (char *)ae_stats + ae_stats_rx[i].offset, 0, 426 ae_stats_rx[i].desc); 427 } 428 } 429 430 /* 431 * Transmitter statistcics. 432 */ 433 stats_tx = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(stats), OID_AUTO, "tx", 434 CTLFLAG_RD, NULL, "Tx MAC statistics"); 435 if (stats_tx != NULL) { 436 for (i = 0; i < AE_STATS_TX_LEN; i++) { 437 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(stats_tx), 438 OID_AUTO, ae_stats_tx[i].node, CTLFLAG_RD, 439 (char *)ae_stats + ae_stats_tx[i].offset, 0, 440 ae_stats_tx[i].desc); 441 } 442 } 443 } 444 445 static int 446 ae_miibus_readreg(device_t dev, int phy, int reg) 447 { 448 struct ae_softc *sc = device_get_softc(dev); 449 uint32_t val; 450 int i; 451 452 /* 453 * Locking is done in upper layers. 454 */ 455 if (phy != sc->ae_phyaddr) 456 return (0); 457 val = ((reg << AE_MDIO_REGADDR_SHIFT) & AE_MDIO_REGADDR_MASK) | 458 AE_MDIO_START | AE_MDIO_READ | AE_MDIO_SUP_PREAMBLE | 459 ((AE_MDIO_CLK_25_4 << AE_MDIO_CLK_SHIFT) & AE_MDIO_CLK_MASK); 460 AE_WRITE_4(sc, AE_MDIO_REG, val); 461 462 /* 463 * Wait for operation to complete. 464 */ 465 for (i = 0; i < AE_MDIO_TIMEOUT; i++) { 466 DELAY(2); 467 val = AE_READ_4(sc, AE_MDIO_REG); 468 if ((val & (AE_MDIO_START | AE_MDIO_BUSY)) == 0) 469 break; 470 } 471 if (i == AE_MDIO_TIMEOUT) { 472 device_printf(sc->ae_dev, "phy read timeout: %d.\n", reg); 473 return (0); 474 } 475 return ((val << AE_MDIO_DATA_SHIFT) & AE_MDIO_DATA_MASK); 476 } 477 478 static int 479 ae_miibus_writereg(device_t dev, int phy, int reg, int val) 480 { 481 struct ae_softc *sc = device_get_softc(dev); 482 uint32_t aereg; 483 int i; 484 485 /* 486 * Locking is done in upper layers. 487 */ 488 if (phy != sc->ae_phyaddr) 489 return (0); 490 aereg = ((reg << AE_MDIO_REGADDR_SHIFT) & AE_MDIO_REGADDR_MASK) | 491 AE_MDIO_START | AE_MDIO_SUP_PREAMBLE | 492 ((AE_MDIO_CLK_25_4 << AE_MDIO_CLK_SHIFT) & AE_MDIO_CLK_MASK) | 493 ((val << AE_MDIO_DATA_SHIFT) & AE_MDIO_DATA_MASK); 494 AE_WRITE_4(sc, AE_MDIO_REG, aereg); 495 496 /* 497 * Wait for operation to complete. 498 */ 499 for (i = 0; i < AE_MDIO_TIMEOUT; i++) { 500 DELAY(2); 501 aereg = AE_READ_4(sc, AE_MDIO_REG); 502 if ((aereg & (AE_MDIO_START | AE_MDIO_BUSY)) == 0) 503 break; 504 } 505 if (i == AE_MDIO_TIMEOUT) 506 device_printf(sc->ae_dev, "phy write timeout: %d.\n", reg); 507 return (0); 508 } 509 510 static int 511 ae_probe(device_t dev) 512 { 513 uint16_t vendor, devid; 514 const struct ae_dev *sp; 515 516 vendor = pci_get_vendor(dev); 517 devid = pci_get_device(dev); 518 for (sp = ae_devs; sp->ae_name != NULL; sp++) { 519 if (vendor == sp->ae_vendorid && 520 devid == sp->ae_deviceid) { 521 device_set_desc(dev, sp->ae_name); 522 return (0); 523 } 524 } 525 return (ENXIO); 526 } 527 528 static int 529 ae_dma_alloc(struct ae_softc *sc) 530 { 531 bus_addr_t busaddr; 532 int error; 533 534 /* 535 * Create parent DMA tag. 536 */ 537 error = bus_dma_tag_create(NULL, 1, 0, 538 BUS_SPACE_MAXADDR_32BIT, 539 BUS_SPACE_MAXADDR, 540 NULL, NULL, 541 BUS_SPACE_MAXSIZE_32BIT, 542 0, 543 BUS_SPACE_MAXSIZE_32BIT, 544 0, &sc->dma_parent_tag); 545 if (error) { 546 device_printf(sc->ae_dev, "could not creare parent DMA tag.\n"); 547 return (error); 548 } 549 550 /* 551 * Create DMA stuffs for TxD. 552 */ 553 sc->txd_base = bus_dmamem_coherent_any(sc->dma_parent_tag, 4, 554 AE_TXD_BUFSIZE_DEFAULT, BUS_DMA_WAITOK | BUS_DMA_ZERO, 555 &sc->dma_txd_tag, &sc->dma_txd_map, 556 &sc->dma_txd_busaddr); 557 if (sc->txd_base == NULL) { 558 device_printf(sc->ae_dev, "could not creare TxD DMA stuffs.\n"); 559 return ENOMEM; 560 } 561 562 /* 563 * Create DMA stuffs for TxS. 564 */ 565 sc->txs_base = bus_dmamem_coherent_any(sc->dma_parent_tag, 4, 566 AE_TXS_COUNT_DEFAULT * 4, BUS_DMA_WAITOK | BUS_DMA_ZERO, 567 &sc->dma_txs_tag, &sc->dma_txs_map, 568 &sc->dma_txs_busaddr); 569 if (sc->txs_base == NULL) { 570 device_printf(sc->ae_dev, "could not creare TxS DMA stuffs.\n"); 571 return ENOMEM; 572 } 573 574 /* 575 * Create DMA stuffs for RxD. 576 */ 577 sc->rxd_base_dma = bus_dmamem_coherent_any(sc->dma_parent_tag, 128, 578 AE_RXD_COUNT_DEFAULT * 1536 + 120, 579 BUS_DMA_WAITOK | BUS_DMA_ZERO, 580 &sc->dma_rxd_tag, &sc->dma_rxd_map, 581 &busaddr); 582 if (sc->rxd_base_dma == NULL) { 583 device_printf(sc->ae_dev, "could not creare RxD DMA stuffs.\n"); 584 return ENOMEM; 585 } 586 sc->dma_rxd_busaddr = busaddr + 120; 587 sc->rxd_base = (struct ae_rxd *)(sc->rxd_base_dma + 120); 588 589 return (0); 590 } 591 592 static void 593 ae_mac_config(struct ae_softc *sc) 594 { 595 struct mii_data *mii; 596 uint32_t val; 597 598 mii = device_get_softc(sc->ae_miibus); 599 val = AE_READ_4(sc, AE_MAC_REG); 600 val &= ~AE_MAC_FULL_DUPLEX; 601 /* XXX disable AE_MAC_TX_FLOW_EN? */ 602 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) 603 val |= AE_MAC_FULL_DUPLEX; 604 AE_WRITE_4(sc, AE_MAC_REG, val); 605 } 606 607 static int 608 ae_rxeof(struct ae_softc *sc, struct ae_rxd *rxd) 609 { 610 struct ifnet *ifp = &sc->arpcom.ac_if; 611 struct mbuf *m; 612 unsigned int size; 613 uint16_t flags; 614 615 flags = le16toh(rxd->flags); 616 #ifdef AE_DEBUG 617 if_printf(ifp, "Rx interrupt occuried.\n"); 618 #endif 619 size = le16toh(rxd->len) - ETHER_CRC_LEN; 620 if (size < (ETHER_MIN_LEN - ETHER_CRC_LEN - 621 sizeof(struct ether_vlan_header))) { 622 if_printf(ifp, "Runt frame received."); 623 return (EIO); 624 } 625 626 m = m_devget(&rxd->data[0], size, ETHER_ALIGN, ifp, NULL); 627 if (m == NULL) 628 return (ENOBUFS); 629 630 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) && 631 (flags & AE_RXD_HAS_VLAN)) { 632 m->m_pkthdr.ether_vlantag = AE_RXD_VLAN(le16toh(rxd->vlan)); 633 m->m_flags |= M_VLANTAG; 634 } 635 ifp->if_input(ifp, m); 636 637 return (0); 638 } 639 640 static void 641 ae_rx_intr(struct ae_softc *sc) 642 { 643 struct ifnet *ifp = &sc->arpcom.ac_if; 644 struct ae_rxd *rxd; 645 uint16_t flags; 646 int error; 647 648 /* 649 * Syncronize DMA buffers. 650 */ 651 bus_dmamap_sync(sc->dma_rxd_tag, sc->dma_rxd_map, 652 BUS_DMASYNC_POSTREAD); 653 for (;;) { 654 rxd = (struct ae_rxd *)(sc->rxd_base + sc->rxd_cur); 655 656 flags = le16toh(rxd->flags); 657 if ((flags & AE_RXD_UPDATE) == 0) 658 break; 659 rxd->flags = htole16(flags & ~AE_RXD_UPDATE); 660 661 /* Update stats. */ 662 ae_update_stats_rx(flags, &sc->stats); 663 664 /* 665 * Update position index. 666 */ 667 sc->rxd_cur = (sc->rxd_cur + 1) % AE_RXD_COUNT_DEFAULT; 668 if ((flags & AE_RXD_SUCCESS) == 0) { 669 IFNET_STAT_INC(ifp, ierrors, 1); 670 continue; 671 } 672 673 error = ae_rxeof(sc, rxd); 674 if (error) 675 IFNET_STAT_INC(ifp, ierrors, 1); 676 else 677 IFNET_STAT_INC(ifp, ipackets, 1); 678 } 679 680 /* Update Rx index. */ 681 AE_WRITE_2(sc, AE_MB_RXD_IDX_REG, sc->rxd_cur); 682 } 683 684 static void 685 ae_tx_intr(struct ae_softc *sc) 686 { 687 struct ifnet *ifp = &sc->arpcom.ac_if; 688 struct ae_txd *txd; 689 struct ae_txs *txs; 690 uint16_t flags; 691 692 /* 693 * Syncronize DMA buffers. 694 */ 695 bus_dmamap_sync(sc->dma_txd_tag, sc->dma_txd_map, BUS_DMASYNC_POSTREAD); 696 bus_dmamap_sync(sc->dma_txs_tag, sc->dma_txs_map, BUS_DMASYNC_POSTREAD); 697 698 for (;;) { 699 txs = sc->txs_base + sc->txs_ack; 700 701 flags = le16toh(txs->flags); 702 if ((flags & AE_TXS_UPDATE) == 0) 703 break; 704 txs->flags = htole16(flags & ~AE_TXS_UPDATE); 705 706 /* Update stats. */ 707 ae_update_stats_tx(flags, &sc->stats); 708 709 /* 710 * Update TxS position. 711 */ 712 sc->txs_ack = (sc->txs_ack + 1) % AE_TXS_COUNT_DEFAULT; 713 sc->ae_flags |= AE_FLAG_TXAVAIL; 714 txd = (struct ae_txd *)(sc->txd_base + sc->txd_ack); 715 if (txs->len != txd->len) { 716 device_printf(sc->ae_dev, "Size mismatch: " 717 "TxS:%d TxD:%d\n", 718 le16toh(txs->len), le16toh(txd->len)); 719 } 720 721 /* 722 * Move txd ack and align on 4-byte boundary. 723 */ 724 sc->txd_ack = ((sc->txd_ack + le16toh(txd->len) + 4 + 3) & ~3) % 725 AE_TXD_BUFSIZE_DEFAULT; 726 if ((flags & AE_TXS_SUCCESS) != 0) 727 IFNET_STAT_INC(ifp, opackets, 1); 728 else 729 IFNET_STAT_INC(ifp, oerrors, 1); 730 sc->tx_inproc--; 731 } 732 733 if (sc->tx_inproc < 0) { 734 /* XXX assert? */ 735 if_printf(ifp, "Received stray Tx interrupt(s).\n"); 736 sc->tx_inproc = 0; 737 } 738 if (sc->tx_inproc == 0) 739 ifp->if_timer = 0; /* Unarm watchdog. */ 740 if (sc->ae_flags & AE_FLAG_TXAVAIL) { 741 ifq_clr_oactive(&ifp->if_snd); 742 if (!ifq_is_empty(&ifp->if_snd)) 743 #ifdef foo 744 ae_intr(sc); 745 #else 746 if_devstart(ifp); 747 #endif 748 } 749 750 /* 751 * Syncronize DMA buffers. 752 */ 753 bus_dmamap_sync(sc->dma_txd_tag, sc->dma_txd_map, BUS_DMASYNC_PREWRITE); 754 bus_dmamap_sync(sc->dma_txs_tag, sc->dma_txs_map, BUS_DMASYNC_PREWRITE); 755 } 756 757 static void 758 ae_intr(void *xsc) 759 { 760 struct ae_softc *sc = xsc; 761 struct ifnet *ifp = &sc->arpcom.ac_if; 762 uint32_t val; 763 764 ASSERT_SERIALIZED(ifp->if_serializer); 765 766 val = AE_READ_4(sc, AE_ISR_REG); 767 if (val == 0 || (val & AE_IMR_DEFAULT) == 0) 768 return; 769 770 #ifdef foo 771 AE_WRITE_4(sc, AE_ISR_REG, AE_ISR_DISABLE); 772 #endif 773 774 /* Read interrupt status. */ 775 val = AE_READ_4(sc, AE_ISR_REG); 776 777 /* Clear interrupts and disable them. */ 778 AE_WRITE_4(sc, AE_ISR_REG, val | AE_ISR_DISABLE); 779 780 if (ifp->if_flags & IFF_RUNNING) { 781 if (val & (AE_ISR_DMAR_TIMEOUT | 782 AE_ISR_DMAW_TIMEOUT | 783 AE_ISR_PHY_LINKDOWN)) { 784 ae_init(sc); 785 } 786 if (val & AE_ISR_TX_EVENT) 787 ae_tx_intr(sc); 788 if (val & AE_ISR_RX_EVENT) 789 ae_rx_intr(sc); 790 } 791 792 /* Re-enable interrupts. */ 793 AE_WRITE_4(sc, AE_ISR_REG, 0); 794 } 795 796 static void 797 ae_init(void *xsc) 798 { 799 struct ae_softc *sc = xsc; 800 struct ifnet *ifp = &sc->arpcom.ac_if; 801 struct mii_data *mii; 802 uint8_t eaddr[ETHER_ADDR_LEN]; 803 uint32_t val; 804 bus_addr_t addr; 805 806 ASSERT_SERIALIZED(ifp->if_serializer); 807 808 mii = device_get_softc(sc->ae_miibus); 809 ae_stop(sc); 810 ae_reset(sc); 811 ae_pcie_init(sc); 812 ae_powersave_disable(sc); 813 814 /* 815 * Clear and disable interrupts. 816 */ 817 AE_WRITE_4(sc, AE_ISR_REG, 0xffffffff); 818 819 /* 820 * Set the MAC address. 821 */ 822 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN); 823 val = eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]; 824 AE_WRITE_4(sc, AE_EADDR0_REG, val); 825 val = eaddr[0] << 8 | eaddr[1]; 826 AE_WRITE_4(sc, AE_EADDR1_REG, val); 827 828 /* 829 * Set ring buffers base addresses. 830 */ 831 addr = sc->dma_rxd_busaddr; 832 AE_WRITE_4(sc, AE_DESC_ADDR_HI_REG, BUS_ADDR_HI(addr)); 833 AE_WRITE_4(sc, AE_RXD_ADDR_LO_REG, BUS_ADDR_LO(addr)); 834 addr = sc->dma_txd_busaddr; 835 AE_WRITE_4(sc, AE_TXD_ADDR_LO_REG, BUS_ADDR_LO(addr)); 836 addr = sc->dma_txs_busaddr; 837 AE_WRITE_4(sc, AE_TXS_ADDR_LO_REG, BUS_ADDR_LO(addr)); 838 839 /* 840 * Configure ring buffers sizes. 841 */ 842 AE_WRITE_2(sc, AE_RXD_COUNT_REG, AE_RXD_COUNT_DEFAULT); 843 AE_WRITE_2(sc, AE_TXD_BUFSIZE_REG, AE_TXD_BUFSIZE_DEFAULT / 4); 844 AE_WRITE_2(sc, AE_TXS_COUNT_REG, AE_TXS_COUNT_DEFAULT); 845 846 /* 847 * Configure interframe gap parameters. 848 */ 849 val = ((AE_IFG_TXIPG_DEFAULT << AE_IFG_TXIPG_SHIFT) & 850 AE_IFG_TXIPG_MASK) | 851 ((AE_IFG_RXIPG_DEFAULT << AE_IFG_RXIPG_SHIFT) & 852 AE_IFG_RXIPG_MASK) | 853 ((AE_IFG_IPGR1_DEFAULT << AE_IFG_IPGR1_SHIFT) & 854 AE_IFG_IPGR1_MASK) | 855 ((AE_IFG_IPGR2_DEFAULT << AE_IFG_IPGR2_SHIFT) & 856 AE_IFG_IPGR2_MASK); 857 AE_WRITE_4(sc, AE_IFG_REG, val); 858 859 /* 860 * Configure half-duplex operation. 861 */ 862 val = ((AE_HDPX_LCOL_DEFAULT << AE_HDPX_LCOL_SHIFT) & 863 AE_HDPX_LCOL_MASK) | 864 ((AE_HDPX_RETRY_DEFAULT << AE_HDPX_RETRY_SHIFT) & 865 AE_HDPX_RETRY_MASK) | 866 ((AE_HDPX_ABEBT_DEFAULT << AE_HDPX_ABEBT_SHIFT) & 867 AE_HDPX_ABEBT_MASK) | 868 ((AE_HDPX_JAMIPG_DEFAULT << AE_HDPX_JAMIPG_SHIFT) & 869 AE_HDPX_JAMIPG_MASK) | AE_HDPX_EXC_EN; 870 AE_WRITE_4(sc, AE_HDPX_REG, val); 871 872 /* 873 * Configure interrupt moderate timer. 874 */ 875 AE_WRITE_2(sc, AE_IMT_REG, AE_IMT_DEFAULT); 876 val = AE_READ_4(sc, AE_MASTER_REG); 877 val |= AE_MASTER_IMT_EN; 878 AE_WRITE_4(sc, AE_MASTER_REG, val); 879 880 /* 881 * Configure interrupt clearing timer. 882 */ 883 AE_WRITE_2(sc, AE_ICT_REG, AE_ICT_DEFAULT); 884 885 /* 886 * Configure MTU. 887 */ 888 val = ifp->if_mtu + ETHER_HDR_LEN + sizeof(struct ether_vlan_header) + 889 ETHER_CRC_LEN; 890 AE_WRITE_2(sc, AE_MTU_REG, val); 891 892 /* 893 * Configure cut-through threshold. 894 */ 895 AE_WRITE_4(sc, AE_CUT_THRESH_REG, AE_CUT_THRESH_DEFAULT); 896 897 /* 898 * Configure flow control. 899 */ 900 AE_WRITE_2(sc, AE_FLOW_THRESH_HI_REG, (AE_RXD_COUNT_DEFAULT / 8) * 7); 901 AE_WRITE_2(sc, AE_FLOW_THRESH_LO_REG, (AE_RXD_COUNT_MIN / 8) > 902 (AE_RXD_COUNT_DEFAULT / 12) ? (AE_RXD_COUNT_MIN / 8) : 903 (AE_RXD_COUNT_DEFAULT / 12)); 904 905 /* 906 * Init mailboxes. 907 */ 908 sc->txd_cur = sc->rxd_cur = 0; 909 sc->txs_ack = sc->txd_ack = 0; 910 sc->rxd_cur = 0; 911 AE_WRITE_2(sc, AE_MB_TXD_IDX_REG, sc->txd_cur); 912 AE_WRITE_2(sc, AE_MB_RXD_IDX_REG, sc->rxd_cur); 913 sc->tx_inproc = 0; 914 sc->ae_flags |= AE_FLAG_TXAVAIL; /* Free Tx's available. */ 915 916 /* 917 * Enable DMA. 918 */ 919 AE_WRITE_1(sc, AE_DMAREAD_REG, AE_DMAREAD_EN); 920 AE_WRITE_1(sc, AE_DMAWRITE_REG, AE_DMAWRITE_EN); 921 922 /* 923 * Check if everything is OK. 924 */ 925 val = AE_READ_4(sc, AE_ISR_REG); 926 if ((val & AE_ISR_PHY_LINKDOWN) != 0) { 927 device_printf(sc->ae_dev, "Initialization failed.\n"); 928 return; 929 } 930 931 /* 932 * Clear interrupt status. 933 */ 934 AE_WRITE_4(sc, AE_ISR_REG, 0x3fffffff); 935 AE_WRITE_4(sc, AE_ISR_REG, 0x0); 936 937 /* 938 * Enable interrupts. 939 */ 940 val = AE_READ_4(sc, AE_MASTER_REG); 941 AE_WRITE_4(sc, AE_MASTER_REG, val | AE_MASTER_MANUAL_INT); 942 AE_WRITE_4(sc, AE_IMR_REG, AE_IMR_DEFAULT); 943 944 /* 945 * Disable WOL. 946 */ 947 AE_WRITE_4(sc, AE_WOL_REG, 0); 948 949 /* 950 * Configure MAC. 951 */ 952 val = AE_MAC_TX_CRC_EN | AE_MAC_TX_AUTOPAD | 953 AE_MAC_FULL_DUPLEX | AE_MAC_CLK_PHY | 954 AE_MAC_TX_FLOW_EN | AE_MAC_RX_FLOW_EN | 955 ((AE_HALFBUF_DEFAULT << AE_HALFBUF_SHIFT) & AE_HALFBUF_MASK) | 956 ((AE_MAC_PREAMBLE_DEFAULT << AE_MAC_PREAMBLE_SHIFT) & 957 AE_MAC_PREAMBLE_MASK); 958 AE_WRITE_4(sc, AE_MAC_REG, val); 959 960 /* 961 * Configure Rx MAC. 962 */ 963 ae_rxfilter(sc); 964 ae_rxvlan(sc); 965 966 /* 967 * Enable Tx/Rx. 968 */ 969 val = AE_READ_4(sc, AE_MAC_REG); 970 AE_WRITE_4(sc, AE_MAC_REG, val | AE_MAC_TX_EN | AE_MAC_RX_EN); 971 972 sc->ae_flags &= ~AE_FLAG_LINK; 973 mii_mediachg(mii); /* Switch to the current media. */ 974 975 callout_reset(&sc->ae_tick_ch, hz, ae_tick, sc); 976 ifp->if_flags |= IFF_RUNNING; 977 ifq_clr_oactive(&ifp->if_snd); 978 } 979 980 static void 981 ae_watchdog(struct ifnet *ifp) 982 { 983 struct ae_softc *sc = ifp->if_softc; 984 985 ASSERT_SERIALIZED(ifp->if_serializer); 986 987 if ((sc->ae_flags & AE_FLAG_LINK) == 0) 988 if_printf(ifp, "watchdog timeout (missed link).\n"); 989 else 990 if_printf(ifp, "watchdog timeout - resetting.\n"); 991 IFNET_STAT_INC(ifp, oerrors, 1); 992 993 ae_init(sc); 994 if (!ifq_is_empty(&ifp->if_snd)) 995 if_devstart(ifp); 996 } 997 998 static void 999 ae_tick(void *xsc) 1000 { 1001 struct ae_softc *sc = xsc; 1002 struct ifnet *ifp = &sc->arpcom.ac_if; 1003 struct mii_data *mii = device_get_softc(sc->ae_miibus); 1004 1005 lwkt_serialize_enter(ifp->if_serializer); 1006 mii_tick(mii); 1007 callout_reset(&sc->ae_tick_ch, hz, ae_tick, sc); 1008 lwkt_serialize_exit(ifp->if_serializer); 1009 } 1010 1011 static void 1012 ae_rxvlan(struct ae_softc *sc) 1013 { 1014 struct ifnet *ifp = &sc->arpcom.ac_if; 1015 uint32_t val; 1016 1017 val = AE_READ_4(sc, AE_MAC_REG); 1018 val &= ~AE_MAC_RMVLAN_EN; 1019 if (ifp->if_capenable & IFCAP_VLAN_HWTAGGING) 1020 val |= AE_MAC_RMVLAN_EN; 1021 AE_WRITE_4(sc, AE_MAC_REG, val); 1022 } 1023 1024 static void 1025 ae_rxfilter(struct ae_softc *sc) 1026 { 1027 struct ifnet *ifp = &sc->arpcom.ac_if; 1028 struct ifmultiaddr *ifma; 1029 uint32_t crc; 1030 uint32_t mchash[2]; 1031 uint32_t rxcfg; 1032 1033 rxcfg = AE_READ_4(sc, AE_MAC_REG); 1034 rxcfg &= ~(AE_MAC_MCAST_EN | AE_MAC_BCAST_EN | AE_MAC_PROMISC_EN); 1035 rxcfg |= AE_MAC_BCAST_EN; 1036 if (ifp->if_flags & IFF_PROMISC) 1037 rxcfg |= AE_MAC_PROMISC_EN; 1038 if (ifp->if_flags & IFF_ALLMULTI) 1039 rxcfg |= AE_MAC_MCAST_EN; 1040 1041 /* 1042 * Wipe old settings. 1043 */ 1044 AE_WRITE_4(sc, AE_REG_MHT0, 0); 1045 AE_WRITE_4(sc, AE_REG_MHT1, 0); 1046 if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) { 1047 AE_WRITE_4(sc, AE_REG_MHT0, 0xffffffff); 1048 AE_WRITE_4(sc, AE_REG_MHT1, 0xffffffff); 1049 AE_WRITE_4(sc, AE_MAC_REG, rxcfg); 1050 return; 1051 } 1052 1053 /* 1054 * Load multicast tables. 1055 */ 1056 bzero(mchash, sizeof(mchash)); 1057 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1058 if (ifma->ifma_addr->sa_family != AF_LINK) 1059 continue; 1060 crc = ether_crc32_le(LLADDR((struct sockaddr_dl *) 1061 ifma->ifma_addr), ETHER_ADDR_LEN); 1062 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f); 1063 } 1064 AE_WRITE_4(sc, AE_REG_MHT0, mchash[0]); 1065 AE_WRITE_4(sc, AE_REG_MHT1, mchash[1]); 1066 AE_WRITE_4(sc, AE_MAC_REG, rxcfg); 1067 } 1068 1069 static unsigned int 1070 ae_tx_avail_size(struct ae_softc *sc) 1071 { 1072 unsigned int avail; 1073 1074 if (sc->txd_cur >= sc->txd_ack) 1075 avail = AE_TXD_BUFSIZE_DEFAULT - (sc->txd_cur - sc->txd_ack); 1076 else 1077 avail = sc->txd_ack - sc->txd_cur; 1078 return (avail - 4); /* 4-byte header. */ 1079 } 1080 1081 static int 1082 ae_encap(struct ae_softc *sc, struct mbuf **m_head) 1083 { 1084 struct mbuf *m0; 1085 struct ae_txd *hdr; 1086 unsigned int to_end; 1087 uint16_t len; 1088 1089 M_ASSERTPKTHDR((*m_head)); 1090 m0 = *m_head; 1091 len = m0->m_pkthdr.len; 1092 if ((sc->ae_flags & AE_FLAG_TXAVAIL) == 0 || 1093 ae_tx_avail_size(sc) < len) { 1094 #ifdef AE_DEBUG 1095 if_printf(sc->ifp, "No free Tx available.\n"); 1096 #endif 1097 return ENOBUFS; 1098 } 1099 1100 hdr = (struct ae_txd *)(sc->txd_base + sc->txd_cur); 1101 bzero(hdr, sizeof(*hdr)); 1102 1103 /* Header size. */ 1104 sc->txd_cur = (sc->txd_cur + 4) % AE_TXD_BUFSIZE_DEFAULT; 1105 1106 /* Space available to the end of the ring */ 1107 to_end = AE_TXD_BUFSIZE_DEFAULT - sc->txd_cur; 1108 1109 if (to_end >= len) { 1110 m_copydata(m0, 0, len, (caddr_t)(sc->txd_base + sc->txd_cur)); 1111 } else { 1112 m_copydata(m0, 0, to_end, (caddr_t)(sc->txd_base + 1113 sc->txd_cur)); 1114 m_copydata(m0, to_end, len - to_end, (caddr_t)sc->txd_base); 1115 } 1116 1117 /* 1118 * Set TxD flags and parameters. 1119 */ 1120 if ((m0->m_flags & M_VLANTAG) != 0) { 1121 hdr->vlan = htole16(AE_TXD_VLAN(m0->m_pkthdr.ether_vlantag)); 1122 hdr->len = htole16(len | AE_TXD_INSERT_VTAG); 1123 } else { 1124 hdr->len = htole16(len); 1125 } 1126 1127 /* 1128 * Set current TxD position and round up to a 4-byte boundary. 1129 */ 1130 sc->txd_cur = ((sc->txd_cur + len + 3) & ~3) % AE_TXD_BUFSIZE_DEFAULT; 1131 if (sc->txd_cur == sc->txd_ack) 1132 sc->ae_flags &= ~AE_FLAG_TXAVAIL; 1133 #ifdef AE_DEBUG 1134 if_printf(sc->ifp, "New txd_cur = %d.\n", sc->txd_cur); 1135 #endif 1136 1137 /* 1138 * Update TxS position and check if there are empty TxS available. 1139 */ 1140 sc->txs_base[sc->txs_cur].flags &= ~htole16(AE_TXS_UPDATE); 1141 sc->txs_cur = (sc->txs_cur + 1) % AE_TXS_COUNT_DEFAULT; 1142 if (sc->txs_cur == sc->txs_ack) 1143 sc->ae_flags &= ~AE_FLAG_TXAVAIL; 1144 1145 /* 1146 * Synchronize DMA memory. 1147 */ 1148 bus_dmamap_sync(sc->dma_txd_tag, sc->dma_txd_map, BUS_DMASYNC_PREWRITE); 1149 bus_dmamap_sync(sc->dma_txs_tag, sc->dma_txs_map, BUS_DMASYNC_PREWRITE); 1150 1151 return (0); 1152 } 1153 1154 static void 1155 ae_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 1156 { 1157 struct ae_softc *sc = ifp->if_softc; 1158 int error, trans; 1159 1160 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 1161 ASSERT_SERIALIZED(ifp->if_serializer); 1162 1163 #ifdef AE_DEBUG 1164 if_printf(ifp, "Start called.\n"); 1165 #endif 1166 if ((sc->ae_flags & AE_FLAG_LINK) == 0) { 1167 ifq_purge(&ifp->if_snd); 1168 return; 1169 } 1170 if ((ifp->if_flags & IFF_RUNNING) == 0 || ifq_is_oactive(&ifp->if_snd)) 1171 return; 1172 1173 trans = 0; 1174 while (!ifq_is_empty(&ifp->if_snd)) { 1175 struct mbuf *m0; 1176 1177 m0 = ifq_dequeue(&ifp->if_snd); 1178 if (m0 == NULL) 1179 break; /* Nothing to do. */ 1180 1181 error = ae_encap(sc, &m0); 1182 if (error != 0) { 1183 if (m0 != NULL) { 1184 ifq_prepend(&ifp->if_snd, m0); 1185 ifq_set_oactive(&ifp->if_snd); 1186 #ifdef AE_DEBUG 1187 if_printf(ifp, "Setting OACTIVE.\n"); 1188 #endif 1189 } 1190 break; 1191 } 1192 trans = 1; 1193 sc->tx_inproc++; 1194 1195 /* Bounce a copy of the frame to BPF. */ 1196 ETHER_BPF_MTAP(ifp, m0); 1197 m_freem(m0); 1198 } 1199 if (trans) { /* Something was dequeued. */ 1200 AE_WRITE_2(sc, AE_MB_TXD_IDX_REG, sc->txd_cur / 4); 1201 ifp->if_timer = AE_TX_TIMEOUT; /* Load watchdog. */ 1202 #ifdef AE_DEBUG 1203 if_printf(ifp, "%d packets dequeued.\n", count); 1204 if_printf(ifp, "Tx pos now is %d.\n", sc->txd_cur); 1205 #endif 1206 } 1207 } 1208 1209 static int 1210 ae_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr) 1211 { 1212 struct ae_softc *sc = ifp->if_softc; 1213 struct ifreq *ifr; 1214 struct mii_data *mii; 1215 int error = 0, mask; 1216 1217 ASSERT_SERIALIZED(ifp->if_serializer); 1218 1219 ifr = (struct ifreq *)data; 1220 switch (cmd) { 1221 case SIOCSIFFLAGS: 1222 if (ifp->if_flags & IFF_UP) { 1223 if (ifp->if_flags & IFF_RUNNING) { 1224 if (((ifp->if_flags ^ sc->ae_if_flags) 1225 & (IFF_PROMISC | IFF_ALLMULTI)) != 0) 1226 ae_rxfilter(sc); 1227 } else { 1228 ae_init(sc); 1229 } 1230 } else { 1231 if (ifp->if_flags & IFF_RUNNING) 1232 ae_stop(sc); 1233 } 1234 sc->ae_if_flags = ifp->if_flags; 1235 break; 1236 1237 case SIOCADDMULTI: 1238 case SIOCDELMULTI: 1239 if (ifp->if_flags & IFF_RUNNING) 1240 ae_rxfilter(sc); 1241 break; 1242 1243 case SIOCSIFMEDIA: 1244 case SIOCGIFMEDIA: 1245 mii = device_get_softc(sc->ae_miibus); 1246 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd); 1247 break; 1248 1249 case SIOCSIFCAP: 1250 mask = ifr->ifr_reqcap ^ ifp->if_capenable; 1251 if (mask & IFCAP_VLAN_HWTAGGING) { 1252 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; 1253 ae_rxvlan(sc); 1254 } 1255 break; 1256 1257 default: 1258 error = ether_ioctl(ifp, cmd, data); 1259 break; 1260 } 1261 return (error); 1262 } 1263 1264 static int 1265 ae_attach(device_t dev) 1266 { 1267 struct ae_softc *sc = device_get_softc(dev); 1268 struct ifnet *ifp = &sc->arpcom.ac_if; 1269 int error = 0; 1270 1271 sc->ae_dev = dev; 1272 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 1273 callout_init(&sc->ae_tick_ch); 1274 1275 /* Enable bus mastering */ 1276 pci_enable_busmaster(dev); 1277 1278 /* 1279 * Allocate memory mapped IO 1280 */ 1281 sc->ae_mem_rid = PCIR_BAR(0); 1282 sc->ae_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 1283 &sc->ae_mem_rid, RF_ACTIVE); 1284 if (sc->ae_mem_res == NULL) { 1285 device_printf(dev, "can't allocate IO memory\n"); 1286 return ENXIO; 1287 } 1288 sc->ae_mem_bt = rman_get_bustag(sc->ae_mem_res); 1289 sc->ae_mem_bh = rman_get_bushandle(sc->ae_mem_res); 1290 1291 /* 1292 * Allocate IRQ 1293 */ 1294 sc->ae_irq_rid = 0; 1295 sc->ae_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 1296 &sc->ae_irq_rid, 1297 RF_SHAREABLE | RF_ACTIVE); 1298 if (sc->ae_irq_res == NULL) { 1299 device_printf(dev, "can't allocate irq\n"); 1300 error = ENXIO; 1301 goto fail; 1302 } 1303 1304 /* Set PHY address. */ 1305 sc->ae_phyaddr = AE_PHYADDR_DEFAULT; 1306 1307 /* Create sysctl tree */ 1308 ae_sysctl_node(sc); 1309 1310 /* Reset PHY. */ 1311 ae_phy_reset(sc); 1312 1313 /* 1314 * Reset the ethernet controller. 1315 */ 1316 ae_reset(sc); 1317 ae_pcie_init(sc); 1318 1319 /* 1320 * Get PCI and chip id/revision. 1321 */ 1322 sc->ae_rev = pci_get_revid(dev); 1323 sc->ae_chip_rev = 1324 (AE_READ_4(sc, AE_MASTER_REG) >> AE_MASTER_REVNUM_SHIFT) & 1325 AE_MASTER_REVNUM_MASK; 1326 if (bootverbose) { 1327 device_printf(dev, "PCI device revision : 0x%04x\n", sc->ae_rev); 1328 device_printf(dev, "Chip id/revision : 0x%04x\n", 1329 sc->ae_chip_rev); 1330 } 1331 1332 /* 1333 * XXX 1334 * Unintialized hardware returns an invalid chip id/revision 1335 * as well as 0xFFFFFFFF for Tx/Rx fifo length. It seems that 1336 * unplugged cable results in putting hardware into automatic 1337 * power down mode which in turn returns invalld chip revision. 1338 */ 1339 if (sc->ae_chip_rev == 0xFFFF) { 1340 device_printf(dev,"invalid chip revision : 0x%04x -- " 1341 "not initialized?\n", sc->ae_chip_rev); 1342 error = ENXIO; 1343 goto fail; 1344 } 1345 #if 0 1346 /* Get DMA parameters from PCIe device control register. */ 1347 pcie_ptr = pci_get_pciecap_ptr(dev); 1348 if (pcie_ptr) { 1349 uint16_t devctl; 1350 sc->ae_flags |= AE_FLAG_PCIE; 1351 devctl = pci_read_config(dev, pcie_ptr + PCIER_DEVCTRL, 2); 1352 /* Max read request size. */ 1353 sc->ae_dma_rd_burst = ((devctl >> 12) & 0x07) << 1354 DMA_CFG_RD_BURST_SHIFT; 1355 /* Max payload size. */ 1356 sc->ae_dma_wr_burst = ((devctl >> 5) & 0x07) << 1357 DMA_CFG_WR_BURST_SHIFT; 1358 if (bootverbose) { 1359 device_printf(dev, "Read request size : %d bytes.\n", 1360 128 << ((devctl >> 12) & 0x07)); 1361 device_printf(dev, "TLP payload size : %d bytes.\n", 1362 128 << ((devctl >> 5) & 0x07)); 1363 } 1364 } else { 1365 sc->ae_dma_rd_burst = DMA_CFG_RD_BURST_128; 1366 sc->ae_dma_wr_burst = DMA_CFG_WR_BURST_128; 1367 } 1368 #endif 1369 1370 /* Create DMA stuffs */ 1371 error = ae_dma_alloc(sc); 1372 if (error) 1373 goto fail; 1374 1375 /* Load station address. */ 1376 ae_get_eaddr(sc); 1377 1378 ifp->if_softc = sc; 1379 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1380 ifp->if_ioctl = ae_ioctl; 1381 ifp->if_start = ae_start; 1382 ifp->if_init = ae_init; 1383 ifp->if_watchdog = ae_watchdog; 1384 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN - 1); 1385 ifq_set_ready(&ifp->if_snd); 1386 ifp->if_capabilities = IFCAP_VLAN_MTU | 1387 IFCAP_VLAN_HWTAGGING; 1388 ifp->if_hwassist = 0; 1389 ifp->if_capenable = ifp->if_capabilities; 1390 1391 /* Set up MII bus. */ 1392 error = mii_phy_probe(dev, &sc->ae_miibus, 1393 ae_mediachange, ae_mediastatus); 1394 if (error) { 1395 device_printf(dev, "no PHY found!\n"); 1396 goto fail; 1397 } 1398 ether_ifattach(ifp, sc->ae_eaddr, NULL); 1399 1400 /* Tell the upper layer(s) we support long frames. */ 1401 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 1402 1403 ifq_set_cpuid(&ifp->if_snd, rman_get_cpuid(sc->ae_irq_res)); 1404 1405 error = bus_setup_intr(dev, sc->ae_irq_res, INTR_MPSAFE, ae_intr, sc, 1406 &sc->ae_irq_handle, ifp->if_serializer); 1407 if (error) { 1408 device_printf(dev, "could not set up interrupt handler.\n"); 1409 ether_ifdetach(ifp); 1410 goto fail; 1411 } 1412 return 0; 1413 fail: 1414 ae_detach(dev); 1415 return (error); 1416 } 1417 1418 static int 1419 ae_detach(device_t dev) 1420 { 1421 struct ae_softc *sc = device_get_softc(dev); 1422 1423 if (device_is_attached(dev)) { 1424 struct ifnet *ifp = &sc->arpcom.ac_if; 1425 1426 lwkt_serialize_enter(ifp->if_serializer); 1427 sc->ae_flags |= AE_FLAG_DETACH; 1428 ae_stop(sc); 1429 bus_teardown_intr(dev, sc->ae_irq_res, sc->ae_irq_handle); 1430 lwkt_serialize_exit(ifp->if_serializer); 1431 1432 ether_ifdetach(ifp); 1433 } 1434 1435 if (sc->ae_miibus != NULL) 1436 device_delete_child(dev, sc->ae_miibus); 1437 bus_generic_detach(dev); 1438 1439 if (sc->ae_irq_res != NULL) { 1440 bus_release_resource(dev, SYS_RES_IRQ, sc->ae_irq_rid, 1441 sc->ae_irq_res); 1442 } 1443 if (sc->ae_mem_res != NULL) { 1444 bus_release_resource(dev, SYS_RES_MEMORY, sc->ae_mem_rid, 1445 sc->ae_mem_res); 1446 } 1447 1448 if (sc->ae_sysctl_tree != NULL) 1449 sysctl_ctx_free(&sc->ae_sysctl_ctx); 1450 1451 ae_dma_free(sc); 1452 1453 return (0); 1454 } 1455 1456 static void 1457 ae_dma_free(struct ae_softc *sc) 1458 { 1459 if (sc->dma_txd_tag != NULL) { 1460 bus_dmamap_unload(sc->dma_txd_tag, sc->dma_txd_map); 1461 bus_dmamem_free(sc->dma_txd_tag, sc->txd_base, 1462 sc->dma_txd_map); 1463 bus_dma_tag_destroy(sc->dma_txd_tag); 1464 } 1465 if (sc->dma_txs_tag != NULL) { 1466 bus_dmamap_unload(sc->dma_txs_tag, sc->dma_txs_map); 1467 bus_dmamem_free(sc->dma_txs_tag, sc->txs_base, 1468 sc->dma_txs_map); 1469 bus_dma_tag_destroy(sc->dma_txs_tag); 1470 } 1471 if (sc->dma_rxd_tag != NULL) { 1472 bus_dmamap_unload(sc->dma_rxd_tag, sc->dma_rxd_map); 1473 bus_dmamem_free(sc->dma_rxd_tag, 1474 sc->rxd_base_dma, sc->dma_rxd_map); 1475 bus_dma_tag_destroy(sc->dma_rxd_tag); 1476 } 1477 if (sc->dma_parent_tag != NULL) 1478 bus_dma_tag_destroy(sc->dma_parent_tag); 1479 } 1480 1481 static void 1482 ae_pcie_init(struct ae_softc *sc) 1483 { 1484 AE_WRITE_4(sc, AE_PCIE_LTSSM_TESTMODE_REG, 1485 AE_PCIE_LTSSM_TESTMODE_DEFAULT); 1486 AE_WRITE_4(sc, AE_PCIE_DLL_TX_CTRL_REG, 1487 AE_PCIE_DLL_TX_CTRL_DEFAULT); 1488 } 1489 1490 static void 1491 ae_phy_reset(struct ae_softc *sc) 1492 { 1493 AE_WRITE_4(sc, AE_PHY_ENABLE_REG, AE_PHY_ENABLE); 1494 DELAY(1000); /* XXX: pause(9) ? */ 1495 } 1496 1497 static int 1498 ae_reset(struct ae_softc *sc) 1499 { 1500 int i; 1501 1502 /* 1503 * Issue a soft reset. 1504 */ 1505 AE_WRITE_4(sc, AE_MASTER_REG, AE_MASTER_SOFT_RESET); 1506 bus_space_barrier(sc->ae_mem_bt, sc->ae_mem_bh, AE_MASTER_REG, 4, 1507 BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE); 1508 1509 /* 1510 * Wait for reset to complete. 1511 */ 1512 for (i = 0; i < AE_RESET_TIMEOUT; i++) { 1513 if ((AE_READ_4(sc, AE_MASTER_REG) & AE_MASTER_SOFT_RESET) == 0) 1514 break; 1515 DELAY(10); 1516 } 1517 if (i == AE_RESET_TIMEOUT) { 1518 device_printf(sc->ae_dev, "reset timeout.\n"); 1519 return (ENXIO); 1520 } 1521 1522 /* 1523 * Wait for everything to enter idle state. 1524 */ 1525 for (i = 0; i < AE_IDLE_TIMEOUT; i++) { 1526 if (AE_READ_4(sc, AE_IDLE_REG) == 0) 1527 break; 1528 DELAY(100); 1529 } 1530 if (i == AE_IDLE_TIMEOUT) { 1531 device_printf(sc->ae_dev, "could not enter idle state.\n"); 1532 return (ENXIO); 1533 } 1534 return (0); 1535 } 1536 1537 static int 1538 ae_check_eeprom_present(struct ae_softc *sc, int *vpdc) 1539 { 1540 int error; 1541 uint32_t val; 1542 1543 /* 1544 * Not sure why, but Linux does this. 1545 */ 1546 val = AE_READ_4(sc, AE_SPICTL_REG); 1547 if ((val & AE_SPICTL_VPD_EN) != 0) { 1548 val &= ~AE_SPICTL_VPD_EN; 1549 AE_WRITE_4(sc, AE_SPICTL_REG, val); 1550 } 1551 error = pci_find_extcap(sc->ae_dev, PCIY_VPD, vpdc); 1552 return (error); 1553 } 1554 1555 static int 1556 ae_vpd_read_word(struct ae_softc *sc, int reg, uint32_t *word) 1557 { 1558 uint32_t val; 1559 int i; 1560 1561 AE_WRITE_4(sc, AE_VPD_DATA_REG, 0); /* Clear register value. */ 1562 1563 /* 1564 * VPD registers start at offset 0x100. Read them. 1565 */ 1566 val = 0x100 + reg * 4; 1567 AE_WRITE_4(sc, AE_VPD_CAP_REG, (val << AE_VPD_CAP_ADDR_SHIFT) & 1568 AE_VPD_CAP_ADDR_MASK); 1569 for (i = 0; i < AE_VPD_TIMEOUT; i++) { 1570 DELAY(2000); 1571 val = AE_READ_4(sc, AE_VPD_CAP_REG); 1572 if ((val & AE_VPD_CAP_DONE) != 0) 1573 break; 1574 } 1575 if (i == AE_VPD_TIMEOUT) { 1576 device_printf(sc->ae_dev, "timeout reading VPD register %d.\n", 1577 reg); 1578 return (ETIMEDOUT); 1579 } 1580 *word = AE_READ_4(sc, AE_VPD_DATA_REG); 1581 return (0); 1582 } 1583 1584 static int 1585 ae_get_vpd_eaddr(struct ae_softc *sc, uint32_t *eaddr) 1586 { 1587 uint32_t word, reg, val; 1588 int error; 1589 int found; 1590 int vpdc; 1591 int i; 1592 1593 /* 1594 * Check for EEPROM. 1595 */ 1596 error = ae_check_eeprom_present(sc, &vpdc); 1597 if (error != 0) 1598 return (error); 1599 1600 /* 1601 * Read the VPD configuration space. 1602 * Each register is prefixed with signature, 1603 * so we can check if it is valid. 1604 */ 1605 for (i = 0, found = 0; i < AE_VPD_NREGS; i++) { 1606 error = ae_vpd_read_word(sc, i, &word); 1607 if (error != 0) 1608 break; 1609 1610 /* 1611 * Check signature. 1612 */ 1613 if ((word & AE_VPD_SIG_MASK) != AE_VPD_SIG) 1614 break; 1615 reg = word >> AE_VPD_REG_SHIFT; 1616 i++; /* Move to the next word. */ 1617 if (reg != AE_EADDR0_REG && reg != AE_EADDR1_REG) 1618 continue; 1619 1620 error = ae_vpd_read_word(sc, i, &val); 1621 if (error != 0) 1622 break; 1623 if (reg == AE_EADDR0_REG) 1624 eaddr[0] = val; 1625 else 1626 eaddr[1] = val; 1627 found++; 1628 } 1629 if (found < 2) 1630 return (ENOENT); 1631 1632 eaddr[1] &= 0xffff; /* Only last 2 bytes are used. */ 1633 if (AE_CHECK_EADDR_VALID(eaddr) != 0) { 1634 if (bootverbose) 1635 device_printf(sc->ae_dev, 1636 "VPD ethernet address registers are invalid.\n"); 1637 return (EINVAL); 1638 } 1639 return (0); 1640 } 1641 1642 static int 1643 ae_get_reg_eaddr(struct ae_softc *sc, uint32_t *eaddr) 1644 { 1645 /* 1646 * BIOS is supposed to set this. 1647 */ 1648 eaddr[0] = AE_READ_4(sc, AE_EADDR0_REG); 1649 eaddr[1] = AE_READ_4(sc, AE_EADDR1_REG); 1650 eaddr[1] &= 0xffff; /* Only last 2 bytes are used. */ 1651 if (AE_CHECK_EADDR_VALID(eaddr) != 0) { 1652 if (bootverbose) 1653 device_printf(sc->ae_dev, 1654 "Ethetnet address registers are invalid.\n"); 1655 return (EINVAL); 1656 } 1657 return (0); 1658 } 1659 1660 static void 1661 ae_get_eaddr(struct ae_softc *sc) 1662 { 1663 uint32_t eaddr[2] = {0, 0}; 1664 int error; 1665 1666 /* 1667 *Check for EEPROM. 1668 */ 1669 error = ae_get_vpd_eaddr(sc, eaddr); 1670 if (error) 1671 error = ae_get_reg_eaddr(sc, eaddr); 1672 if (error) { 1673 if (bootverbose) 1674 device_printf(sc->ae_dev, 1675 "Generating random ethernet address.\n"); 1676 eaddr[0] = karc4random(); 1677 /* 1678 * Set OUI to ASUSTek COMPUTER INC. 1679 */ 1680 sc->ae_eaddr[0] = 0x02; /* U/L bit set. */ 1681 sc->ae_eaddr[1] = 0x1f; 1682 sc->ae_eaddr[2] = 0xc6; 1683 sc->ae_eaddr[3] = (eaddr[0] >> 16) & 0xff; 1684 sc->ae_eaddr[4] = (eaddr[0] >> 8) & 0xff; 1685 sc->ae_eaddr[5] = (eaddr[0] >> 0) & 0xff; 1686 } else { 1687 sc->ae_eaddr[0] = (eaddr[1] >> 8) & 0xff; 1688 sc->ae_eaddr[1] = (eaddr[1] >> 0) & 0xff; 1689 sc->ae_eaddr[2] = (eaddr[0] >> 24) & 0xff; 1690 sc->ae_eaddr[3] = (eaddr[0] >> 16) & 0xff; 1691 sc->ae_eaddr[4] = (eaddr[0] >> 8) & 0xff; 1692 sc->ae_eaddr[5] = (eaddr[0] >> 0) & 0xff; 1693 } 1694 } 1695 1696 static int 1697 ae_mediachange(struct ifnet *ifp) 1698 { 1699 struct ae_softc *sc = ifp->if_softc; 1700 struct mii_data *mii = device_get_softc(sc->ae_miibus); 1701 int error; 1702 1703 ASSERT_SERIALIZED(ifp->if_serializer); 1704 if (mii->mii_instance != 0) { 1705 struct mii_softc *miisc; 1706 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 1707 mii_phy_reset(miisc); 1708 } 1709 error = mii_mediachg(mii); 1710 return (error); 1711 } 1712 1713 static void 1714 ae_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) 1715 { 1716 struct ae_softc *sc = ifp->if_softc; 1717 struct mii_data *mii = device_get_softc(sc->ae_miibus); 1718 1719 ASSERT_SERIALIZED(ifp->if_serializer); 1720 mii_pollstat(mii); 1721 ifmr->ifm_status = mii->mii_media_status; 1722 ifmr->ifm_active = mii->mii_media_active; 1723 } 1724 1725 static void 1726 ae_update_stats_tx(uint16_t flags, struct ae_stats *stats) 1727 { 1728 if ((flags & AE_TXS_BCAST) != 0) 1729 stats->tx_bcast++; 1730 if ((flags & AE_TXS_MCAST) != 0) 1731 stats->tx_mcast++; 1732 if ((flags & AE_TXS_PAUSE) != 0) 1733 stats->tx_pause++; 1734 if ((flags & AE_TXS_CTRL) != 0) 1735 stats->tx_ctrl++; 1736 if ((flags & AE_TXS_DEFER) != 0) 1737 stats->tx_defer++; 1738 if ((flags & AE_TXS_EXCDEFER) != 0) 1739 stats->tx_excdefer++; 1740 if ((flags & AE_TXS_SINGLECOL) != 0) 1741 stats->tx_singlecol++; 1742 if ((flags & AE_TXS_MULTICOL) != 0) 1743 stats->tx_multicol++; 1744 if ((flags & AE_TXS_LATECOL) != 0) 1745 stats->tx_latecol++; 1746 if ((flags & AE_TXS_ABORTCOL) != 0) 1747 stats->tx_abortcol++; 1748 if ((flags & AE_TXS_UNDERRUN) != 0) 1749 stats->tx_underrun++; 1750 } 1751 1752 static void 1753 ae_update_stats_rx(uint16_t flags, struct ae_stats *stats) 1754 { 1755 if ((flags & AE_RXD_BCAST) != 0) 1756 stats->rx_bcast++; 1757 if ((flags & AE_RXD_MCAST) != 0) 1758 stats->rx_mcast++; 1759 if ((flags & AE_RXD_PAUSE) != 0) 1760 stats->rx_pause++; 1761 if ((flags & AE_RXD_CTRL) != 0) 1762 stats->rx_ctrl++; 1763 if ((flags & AE_RXD_CRCERR) != 0) 1764 stats->rx_crcerr++; 1765 if ((flags & AE_RXD_CODEERR) != 0) 1766 stats->rx_codeerr++; 1767 if ((flags & AE_RXD_RUNT) != 0) 1768 stats->rx_runt++; 1769 if ((flags & AE_RXD_FRAG) != 0) 1770 stats->rx_frag++; 1771 if ((flags & AE_RXD_TRUNC) != 0) 1772 stats->rx_trunc++; 1773 if ((flags & AE_RXD_ALIGN) != 0) 1774 stats->rx_align++; 1775 } 1776 1777 static int 1778 ae_resume(device_t dev) 1779 { 1780 struct ae_softc *sc = device_get_softc(dev); 1781 struct ifnet *ifp = &sc->arpcom.ac_if; 1782 1783 lwkt_serialize_enter(ifp->if_serializer); 1784 #if 0 1785 AE_READ_4(sc, AE_WOL_REG); /* Clear WOL status. */ 1786 #endif 1787 ae_phy_reset(sc); 1788 if ((ifp->if_flags & IFF_UP) != 0) 1789 ae_init(sc); 1790 lwkt_serialize_exit(ifp->if_serializer); 1791 return (0); 1792 } 1793 1794 static int 1795 ae_suspend(device_t dev) 1796 { 1797 struct ae_softc *sc = device_get_softc(dev); 1798 struct ifnet *ifp = &sc->arpcom.ac_if; 1799 1800 lwkt_serialize_enter(ifp->if_serializer); 1801 ae_stop(sc); 1802 #if 0 1803 /* we don't use ae_pm_init because we don't want WOL */ 1804 ae_pm_init(sc); 1805 #endif 1806 lwkt_serialize_exit(ifp->if_serializer); 1807 return (0); 1808 } 1809 1810 static int 1811 ae_shutdown(device_t dev) 1812 { 1813 struct ae_softc *sc = device_get_softc(dev); 1814 struct ifnet *ifp = &sc->arpcom.ac_if; 1815 1816 ae_suspend(dev); 1817 1818 lwkt_serialize_enter(ifp->if_serializer); 1819 ae_powersave_enable(sc); 1820 lwkt_serialize_exit(ifp->if_serializer); 1821 1822 return (0); 1823 } 1824 1825 static void 1826 ae_powersave_disable(struct ae_softc *sc) 1827 { 1828 uint32_t val; 1829 1830 AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, 0); 1831 val = AE_PHY_READ(sc, AE_PHY_DBG_DATA); 1832 if (val & AE_PHY_DBG_POWERSAVE) { 1833 val &= ~AE_PHY_DBG_POWERSAVE; 1834 AE_PHY_WRITE(sc, AE_PHY_DBG_DATA, val); 1835 DELAY(1000); 1836 } 1837 } 1838 1839 static void 1840 ae_powersave_enable(struct ae_softc *sc) 1841 { 1842 uint32_t val; 1843 1844 /* 1845 * XXX magic numbers. 1846 */ 1847 AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, 0); 1848 val = AE_PHY_READ(sc, AE_PHY_DBG_DATA); 1849 AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, val | 0x1000); 1850 AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, 2); 1851 AE_PHY_WRITE(sc, AE_PHY_DBG_DATA, 0x3000); 1852 AE_PHY_WRITE(sc, AE_PHY_DBG_ADDR, 3); 1853 AE_PHY_WRITE(sc, AE_PHY_DBG_DATA, 0); 1854 }
Cache object: fb71890adc0fbd116dc2e65c013fd9fb
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