if_smsc.c revision 1.33.2.3
1 /* $NetBSD: if_smsc.c,v 1.33.2.3 2018/09/30 01:45:51 pgoyette Exp $ */ 2 3 /* $OpenBSD: if_smsc.c,v 1.4 2012/09/27 12:38:11 jsg Exp $ */ 4 /* $FreeBSD: src/sys/dev/usb/net/if_smsc.c,v 1.1 2012/08/15 04:03:55 gonzo Exp $ */ 5 /*- 6 * Copyright (c) 2012 7 * Ben Gray <bgray (at) freebsd.org>. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * SMSC LAN9xxx devices (http://www.smsc.com/) 33 * 34 * The LAN9500 & LAN9500A devices are stand-alone USB to Ethernet chips that 35 * support USB 2.0 and 10/100 Mbps Ethernet. 36 * 37 * The LAN951x devices are an integrated USB hub and USB to Ethernet adapter. 38 * The driver only covers the Ethernet part, the standard USB hub driver 39 * supports the hub part. 40 * 41 * This driver is closely modelled on the Linux driver written and copyrighted 42 * by SMSC. 43 * 44 * H/W TCP & UDP Checksum Offloading 45 * --------------------------------- 46 * The chip supports both tx and rx offloading of UDP & TCP checksums, this 47 * feature can be dynamically enabled/disabled. 48 * 49 * RX checksuming is performed across bytes after the IPv4 header to the end of 50 * the Ethernet frame, this means if the frame is padded with non-zero values 51 * the H/W checksum will be incorrect, however the rx code compensates for this. 52 * 53 * TX checksuming is more complicated, the device requires a special header to 54 * be prefixed onto the start of the frame which indicates the start and end 55 * positions of the UDP or TCP frame. This requires the driver to manually 56 * go through the packet data and decode the headers prior to sending. 57 * On Linux they generally provide cues to the location of the csum and the 58 * area to calculate it over, on FreeBSD we seem to have to do it all ourselves, 59 * hence this is not as optimal and therefore h/w TX checksum is currently not 60 * implemented. 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: if_smsc.c,v 1.33.2.3 2018/09/30 01:45:51 pgoyette Exp $"); 65 66 #ifdef _KERNEL_OPT 67 #include "opt_usb.h" 68 #include "opt_inet.h" 69 #endif 70 71 #include <sys/param.h> 72 #include <sys/bus.h> 73 #include <sys/device.h> 74 #include <sys/kernel.h> 75 #include <sys/mbuf.h> 76 #include <sys/mutex.h> 77 #include <sys/proc.h> 78 #include <sys/rndsource.h> 79 #include <sys/socket.h> 80 #include <sys/sockio.h> 81 #include <sys/systm.h> 82 83 #include <net/if.h> 84 #include <net/if_dl.h> 85 #include <net/if_media.h> 86 #include <net/if_ether.h> 87 88 #include <net/bpf.h> 89 90 #ifdef INET 91 #include <netinet/in.h> 92 #include <netinet/if_inarp.h> 93 #endif 94 95 #include <dev/mii/mii.h> 96 #include <dev/mii/miivar.h> 97 98 #include <dev/usb/usb.h> 99 #include <dev/usb/usbdi.h> 100 #include <dev/usb/usbdi_util.h> 101 #include <dev/usb/usbdivar.h> 102 #include <dev/usb/usbdevs.h> 103 104 #include <dev/usb/if_smscreg.h> 105 #include <dev/usb/if_smscvar.h> 106 107 #include "ioconf.h" 108 109 #ifdef USB_DEBUG 110 int smsc_debug = 0; 111 #endif 112 113 #define ETHER_ALIGN 2 114 /* 115 * Various supported device vendors/products. 116 */ 117 static const struct usb_devno smsc_devs[] = { 118 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN89530 }, 119 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9530 }, 120 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9730 }, 121 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500 }, 122 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A }, 123 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_ALT }, 124 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_HAL }, 125 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_SAL10 }, 126 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_ALT }, 127 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_SAL10 }, 128 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505 }, 129 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A }, 130 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_HAL }, 131 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_SAL10 }, 132 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505_SAL10 }, 133 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14 }, 134 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_ALT }, 135 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_SAL10 } 136 }; 137 138 #ifdef USB_DEBUG 139 #define smsc_dbg_printf(sc, fmt, args...) \ 140 do { \ 141 if (smsc_debug > 0) \ 142 printf("debug: " fmt, ##args); \ 143 } while(0) 144 #else 145 #define smsc_dbg_printf(sc, fmt, args...) 146 #endif 147 148 #define smsc_warn_printf(sc, fmt, args...) \ 149 printf("%s: warning: " fmt, device_xname((sc)->sc_dev), ##args) 150 151 #define smsc_err_printf(sc, fmt, args...) \ 152 printf("%s: error: " fmt, device_xname((sc)->sc_dev), ##args) 153 154 /* Function declarations */ 155 int smsc_chip_init(struct smsc_softc *); 156 void smsc_setmulti(struct smsc_softc *); 157 int smsc_setmacaddress(struct smsc_softc *, const uint8_t *); 158 159 int smsc_match(device_t, cfdata_t, void *); 160 void smsc_attach(device_t, device_t, void *); 161 int smsc_detach(device_t, int); 162 int smsc_activate(device_t, enum devact); 163 164 int smsc_init(struct ifnet *); 165 int smsc_init_locked(struct ifnet *); 166 void smsc_start(struct ifnet *); 167 void smsc_start_locked(struct ifnet *); 168 int smsc_ioctl(struct ifnet *, u_long, void *); 169 void smsc_stop(struct ifnet *, int); 170 void smsc_stop_locked(struct ifnet *, int); 171 172 void smsc_reset(struct smsc_softc *); 173 struct mbuf *smsc_newbuf(void); 174 175 void smsc_tick(void *); 176 void smsc_tick_task(void *); 177 void smsc_miibus_statchg(struct ifnet *); 178 void smsc_miibus_statchg_locked(struct ifnet *); 179 int smsc_miibus_readreg(device_t, int, int); 180 void smsc_miibus_writereg(device_t, int, int, int); 181 int smsc_ifmedia_upd(struct ifnet *); 182 void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 183 void smsc_lock_mii(struct smsc_softc *); 184 void smsc_unlock_mii(struct smsc_softc *); 185 186 int smsc_tx_list_init(struct smsc_softc *); 187 void smsc_tx_list_free(struct smsc_softc *); 188 int smsc_rx_list_init(struct smsc_softc *); 189 void smsc_rx_list_free(struct smsc_softc *); 190 int smsc_encap(struct smsc_softc *, struct mbuf *, int); 191 void smsc_rxeof(struct usbd_xfer *, void *, usbd_status); 192 void smsc_txeof(struct usbd_xfer *, void *, usbd_status); 193 194 int smsc_read_reg(struct smsc_softc *, uint32_t, uint32_t *); 195 int smsc_write_reg(struct smsc_softc *, uint32_t, uint32_t); 196 int smsc_wait_for_bits(struct smsc_softc *, uint32_t, uint32_t); 197 int smsc_sethwcsum(struct smsc_softc *); 198 199 CFATTACH_DECL_NEW(usmsc, sizeof(struct smsc_softc), smsc_match, smsc_attach, 200 smsc_detach, smsc_activate); 201 202 int 203 smsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data) 204 { 205 usb_device_request_t req; 206 uint32_t buf; 207 usbd_status err; 208 209 req.bmRequestType = UT_READ_VENDOR_DEVICE; 210 req.bRequest = SMSC_UR_READ_REG; 211 USETW(req.wValue, 0); 212 USETW(req.wIndex, off); 213 USETW(req.wLength, 4); 214 215 err = usbd_do_request(sc->sc_udev, &req, &buf); 216 if (err != 0) 217 smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off); 218 219 *data = le32toh(buf); 220 221 return err; 222 } 223 224 int 225 smsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data) 226 { 227 usb_device_request_t req; 228 uint32_t buf; 229 usbd_status err; 230 231 buf = htole32(data); 232 233 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 234 req.bRequest = SMSC_UR_WRITE_REG; 235 USETW(req.wValue, 0); 236 USETW(req.wIndex, off); 237 USETW(req.wLength, 4); 238 239 err = usbd_do_request(sc->sc_udev, &req, &buf); 240 if (err != 0) 241 smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off); 242 243 return err; 244 } 245 246 int 247 smsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits) 248 { 249 uint32_t val; 250 int err, i; 251 252 for (i = 0; i < 100; i++) { 253 if ((err = smsc_read_reg(sc, reg, &val)) != 0) 254 return err; 255 if (!(val & bits)) 256 return 0; 257 DELAY(5); 258 } 259 260 return 1; 261 } 262 263 int 264 smsc_miibus_readreg(device_t dev, int phy, int reg) 265 { 266 struct smsc_softc * const sc = device_private(dev); 267 uint32_t addr; 268 uint32_t val = 0; 269 270 smsc_lock_mii(sc); 271 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 272 smsc_warn_printf(sc, "MII is busy\n"); 273 goto done; 274 } 275 276 addr = (phy << 11) | (reg << 6) | SMSC_MII_READ; 277 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 278 279 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 280 smsc_warn_printf(sc, "MII read timeout\n"); 281 282 smsc_read_reg(sc, SMSC_MII_DATA, &val); 283 284 done: 285 smsc_unlock_mii(sc); 286 287 return val & 0xffff; 288 } 289 290 void 291 smsc_miibus_writereg(device_t dev, int phy, int reg, int val) 292 { 293 struct smsc_softc * const sc = device_private(dev); 294 uint32_t addr; 295 296 if (sc->sc_phyno != phy) 297 return; 298 299 smsc_lock_mii(sc); 300 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 301 smsc_warn_printf(sc, "MII is busy\n"); 302 smsc_unlock_mii(sc); 303 return; 304 } 305 306 smsc_write_reg(sc, SMSC_MII_DATA, val); 307 308 addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE; 309 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 310 smsc_unlock_mii(sc); 311 312 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 313 smsc_warn_printf(sc, "MII write timeout\n"); 314 } 315 316 void 317 smsc_miibus_statchg(struct ifnet *ifp) 318 { 319 if (ifp == NULL) 320 return; 321 322 struct smsc_softc * const sc = ifp->if_softc; 323 324 mutex_enter(&sc->sc_lock); 325 if (sc->sc_dying) { 326 mutex_exit(&sc->sc_lock); 327 return; 328 } 329 smsc_miibus_statchg_locked(ifp); 330 331 mutex_exit(&sc->sc_lock); 332 } 333 334 335 void 336 smsc_miibus_statchg_locked(struct ifnet *ifp) 337 { 338 struct smsc_softc * const sc = ifp->if_softc; 339 struct mii_data * const mii = &sc->sc_mii; 340 int err; 341 uint32_t flow; 342 uint32_t afc_cfg; 343 344 KASSERT(mutex_owned(&sc->sc_lock)); 345 346 if ((ifp->if_flags & IFF_RUNNING) == 0) { 347 smsc_dbg_printf(sc, "%s: not running\n", __func__); 348 return; 349 } 350 351 /* Use the MII status to determine link status */ 352 sc->sc_flags &= ~SMSC_FLAG_LINK; 353 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 354 (IFM_ACTIVE | IFM_AVALID)) { 355 switch (IFM_SUBTYPE(mii->mii_media_active)) { 356 case IFM_10_T: 357 case IFM_100_TX: 358 sc->sc_flags |= SMSC_FLAG_LINK; 359 break; 360 case IFM_1000_T: 361 /* Gigabit ethernet not supported by chipset */ 362 break; 363 default: 364 break; 365 } 366 } 367 368 /* Lost link, do nothing. */ 369 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 370 smsc_dbg_printf(sc, "link flag not set\n"); 371 return; 372 } 373 374 err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg); 375 if (err) { 376 smsc_warn_printf(sc, "failed to read initial AFC_CFG, " 377 "error %d\n", err); 378 return; 379 } 380 381 /* Enable/disable full duplex operation and TX/RX pause */ 382 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 383 smsc_dbg_printf(sc, "full duplex operation\n"); 384 sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN; 385 sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX; 386 387 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 388 flow = 0xffff0002; 389 else 390 flow = 0; 391 392 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 393 afc_cfg |= 0xf; 394 else 395 afc_cfg &= ~0xf; 396 } else { 397 smsc_dbg_printf(sc, "half duplex operation\n"); 398 sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX; 399 sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN; 400 401 flow = 0; 402 afc_cfg |= 0xf; 403 } 404 405 err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 406 err += smsc_write_reg(sc, SMSC_FLOW, flow); 407 err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg); 408 if (err) 409 smsc_warn_printf(sc, "media change failed, error %d\n", err); 410 } 411 412 int 413 smsc_ifmedia_upd(struct ifnet *ifp) 414 { 415 struct smsc_softc * const sc = ifp->if_softc; 416 struct mii_data * const mii = &sc->sc_mii; 417 int err; 418 419 if (mii->mii_instance) { 420 struct mii_softc *miisc; 421 422 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 423 mii_phy_reset(miisc); 424 } 425 err = mii_mediachg(mii); 426 return err; 427 } 428 429 void 430 smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 431 { 432 struct smsc_softc * const sc = ifp->if_softc; 433 struct mii_data * const mii = &sc->sc_mii; 434 435 /* SMSC_LOCK */ 436 437 mii_pollstat(mii); 438 439 ifmr->ifm_active = mii->mii_media_active; 440 ifmr->ifm_status = mii->mii_media_status; 441 442 /* SMSC_UNLOCK */ 443 } 444 445 static inline uint32_t 446 smsc_hash(uint8_t addr[ETHER_ADDR_LEN]) 447 { 448 449 return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 450 } 451 452 void 453 smsc_setmulti(struct smsc_softc *sc) 454 { 455 struct ifnet * const ifp = &sc->sc_ec.ec_if; 456 struct ether_multi *enm; 457 struct ether_multistep step; 458 uint32_t hashtbl[2] = { 0, 0 }; 459 uint32_t hash; 460 461 KASSERT(mutex_owned(&sc->sc_lock)); 462 463 if (sc->sc_dying) 464 return; 465 466 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 467 allmulti: 468 smsc_dbg_printf(sc, "receive all multicast enabled\n"); 469 sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 470 sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 471 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 472 return; 473 } else { 474 sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 475 sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 476 } 477 478 ETHER_LOCK(&sc->sc_ec); 479 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 480 while (enm != NULL) { 481 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, ETHER_ADDR_LEN)) { 482 ETHER_UNLOCK(&sc->sc_ec); 483 goto allmulti; 484 } 485 486 hash = smsc_hash(enm->enm_addrlo); 487 hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 488 ETHER_NEXT_MULTI(step, enm); 489 } 490 ETHER_UNLOCK(&sc->sc_ec); 491 492 /* Debug */ 493 if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) { 494 smsc_dbg_printf(sc, "receive select group of macs\n"); 495 } else { 496 smsc_dbg_printf(sc, "receive own packets only\n"); 497 } 498 499 /* Write the hash table and mac control registers */ 500 ifp->if_flags &= ~IFF_ALLMULTI; 501 smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 502 smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 503 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 504 } 505 506 int 507 smsc_sethwcsum(struct smsc_softc *sc) 508 { 509 struct ifnet * const ifp = &sc->sc_ec.ec_if; 510 uint32_t val; 511 int err; 512 513 err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 514 if (err != 0) { 515 smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", 516 err); 517 return err; 518 } 519 520 /* Enable/disable the Rx checksum */ 521 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx)) 522 val |= (SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 523 else 524 val &= ~(SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 525 526 /* Enable/disable the Tx checksum (currently not supported) */ 527 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx)) 528 val |= SMSC_COE_CTRL_TX_EN; 529 else 530 val &= ~SMSC_COE_CTRL_TX_EN; 531 532 sc->sc_coe_ctrl = val; 533 534 err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 535 if (err != 0) { 536 smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", 537 err); 538 return err; 539 } 540 541 return 0; 542 } 543 544 int 545 smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 546 { 547 int err; 548 uint32_t val; 549 550 smsc_dbg_printf(sc, "setting mac address to " 551 "%02x:%02x:%02x:%02x:%02x:%02x\n", 552 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 553 554 val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 555 if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 556 goto done; 557 558 val = (addr[5] << 8) | addr[4]; 559 err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 560 561 done: 562 return err; 563 } 564 565 void 566 smsc_reset(struct smsc_softc *sc) 567 { 568 KASSERT(mutex_owned(&sc->sc_lock)); 569 if (sc->sc_dying) 570 return; 571 572 /* Wait a little while for the chip to get its brains in order. */ 573 DELAY(1000); 574 575 /* Reinitialize controller to achieve full reset. */ 576 smsc_chip_init(sc); 577 } 578 579 int 580 smsc_init(struct ifnet *ifp) 581 { 582 struct smsc_softc * const sc = ifp->if_softc; 583 584 mutex_enter(&sc->sc_lock); 585 int ret = smsc_init_locked(ifp); 586 mutex_exit(&sc->sc_lock); 587 588 return ret; 589 } 590 591 int 592 smsc_init_locked(struct ifnet *ifp) 593 { 594 struct smsc_softc * const sc = ifp->if_softc; 595 usbd_status err; 596 597 if (sc->sc_dying) 598 return EIO; 599 600 /* Cancel pending I/O */ 601 smsc_stop_locked(ifp, 1); 602 603 /* Reset the ethernet interface. */ 604 smsc_reset(sc); 605 606 /* Load the multicast filter. */ 607 smsc_setmulti(sc); 608 609 /* TCP/UDP checksum offload engines. */ 610 smsc_sethwcsum(sc); 611 612 /* Open RX and TX pipes. */ 613 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 614 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_RX]); 615 if (err) { 616 printf("%s: open rx pipe failed: %s\n", 617 device_xname(sc->sc_dev), usbd_errstr(err)); 618 goto fail; 619 } 620 621 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 622 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_TX]); 623 if (err) { 624 printf("%s: open tx pipe failed: %s\n", 625 device_xname(sc->sc_dev), usbd_errstr(err)); 626 goto fail1; 627 } 628 629 /* Init RX ring. */ 630 if (smsc_rx_list_init(sc)) { 631 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 632 goto fail2; 633 } 634 635 /* Init TX ring. */ 636 if (smsc_tx_list_init(sc)) { 637 aprint_error_dev(sc->sc_dev, "tx list init failed\n"); 638 goto fail3; 639 } 640 641 mutex_enter(&sc->sc_rxlock); 642 mutex_enter(&sc->sc_txlock); 643 sc->sc_stopping = false; 644 645 /* Start up the receive pipe. */ 646 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 647 struct smsc_chain * const c = &sc->sc_cdata.rx_chain[i]; 648 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, sc->sc_bufsz, 649 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, smsc_rxeof); 650 usbd_transfer(c->sc_xfer); 651 } 652 653 mutex_exit(&sc->sc_txlock); 654 mutex_exit(&sc->sc_rxlock); 655 656 /* Indicate we are up and running. */ 657 ifp->if_flags |= IFF_RUNNING; 658 ifp->if_flags &= ~IFF_OACTIVE; 659 660 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 661 662 return 0; 663 664 fail3: 665 smsc_rx_list_free(sc); 666 fail2: 667 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 668 fail1: 669 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 670 fail: 671 return EIO; 672 } 673 674 void 675 smsc_start(struct ifnet *ifp) 676 { 677 struct smsc_softc * const sc = ifp->if_softc; 678 KASSERT(ifp->if_extflags & IFEF_MPSAFE); 679 680 mutex_enter(&sc->sc_txlock); 681 if (!sc->sc_stopping) 682 smsc_start_locked(ifp); 683 mutex_exit(&sc->sc_txlock); 684 } 685 686 void 687 smsc_start_locked(struct ifnet *ifp) 688 { 689 struct smsc_softc * const sc = ifp->if_softc; 690 struct mbuf *m_head = NULL; 691 692 KASSERT(mutex_owned(&sc->sc_txlock)); 693 694 /* Don't send anything if there is no link or controller is busy. */ 695 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 696 smsc_dbg_printf(sc, "%s: no link\n", __func__); 697 return; 698 } 699 700 /* Any free USB transfers? */ 701 if (sc->sc_cdata.tx_free == 0) { 702 smsc_dbg_printf(sc, "%s: all USB transfers in use\n", __func__); 703 return; 704 } 705 706 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) { 707 smsc_dbg_printf(sc, "%s: not running\n", __func__); 708 return; 709 } 710 711 IFQ_POLL(&ifp->if_snd, m_head); 712 if (m_head == NULL) 713 return; 714 715 sc->sc_cdata.tx_free--; 716 717 IFQ_DEQUEUE(&ifp->if_snd, m_head); 718 if (smsc_encap(sc, m_head, sc->sc_cdata.tx_next)) { 719 m_free(m_head); 720 sc->sc_cdata.tx_free++; 721 return; 722 } 723 724 sc->sc_cdata.tx_next = (sc->sc_cdata.tx_next + 1) % SMSC_TX_LIST_CNT; 725 726 bpf_mtap(ifp, m_head, BPF_D_OUT); 727 728 if (sc->sc_cdata.tx_free == 0) 729 ifp->if_flags |= IFF_OACTIVE; 730 731 /* 732 * Set a timeout in case the chip goes out to lunch. 733 */ 734 ifp->if_timer = 5; 735 } 736 737 void 738 smsc_tick(void *xsc) 739 { 740 struct smsc_softc * const sc = xsc; 741 742 if (sc == NULL) 743 return; 744 745 mutex_enter(&sc->sc_lock); 746 747 if (sc->sc_dying) { 748 mutex_exit(&sc->sc_lock); 749 return; 750 } 751 752 if (!sc->sc_ttpending) { 753 sc->sc_ttpending = true; 754 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 755 } 756 757 mutex_exit(&sc->sc_lock); 758 } 759 760 void 761 smsc_stop(struct ifnet *ifp, int disable) 762 { 763 struct smsc_softc * const sc = ifp->if_softc; 764 765 mutex_enter(&sc->sc_lock); 766 smsc_stop_locked(ifp, disable); 767 mutex_exit(&sc->sc_lock); 768 } 769 770 void 771 smsc_stop_locked(struct ifnet *ifp, int disable) 772 { 773 struct smsc_softc * const sc = ifp->if_softc; 774 usbd_status err; 775 776 KASSERT(mutex_owned(&sc->sc_lock)); 777 mutex_enter(&sc->sc_rxlock); 778 mutex_enter(&sc->sc_txlock); 779 sc->sc_stopping = true; 780 mutex_exit(&sc->sc_txlock); 781 mutex_exit(&sc->sc_rxlock); 782 783 callout_stop(&sc->sc_stat_ch); 784 785 /* Stop transfers. */ 786 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 787 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 788 if (err) { 789 printf("%s: abort rx pipe failed: %s\n", 790 device_xname(sc->sc_dev), usbd_errstr(err)); 791 } 792 } 793 794 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 795 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 796 if (err) { 797 printf("%s: abort tx pipe failed: %s\n", 798 device_xname(sc->sc_dev), usbd_errstr(err)); 799 } 800 } 801 802 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 803 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 804 if (err) { 805 printf("%s: abort intr pipe failed: %s\n", 806 device_xname(sc->sc_dev), usbd_errstr(err)); 807 } 808 } 809 810 smsc_rx_list_free(sc); 811 812 smsc_tx_list_free(sc); 813 814 /* Close pipes */ 815 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 816 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 817 if (err) { 818 printf("%s: close rx pipe failed: %s\n", 819 device_xname(sc->sc_dev), usbd_errstr(err)); 820 } 821 sc->sc_ep[SMSC_ENDPT_RX] = NULL; 822 } 823 824 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 825 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 826 if (err) { 827 printf("%s: close tx pipe failed: %s\n", 828 device_xname(sc->sc_dev), usbd_errstr(err)); 829 } 830 sc->sc_ep[SMSC_ENDPT_TX] = NULL; 831 } 832 833 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 834 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 835 if (err) { 836 printf("%s: close intr pipe failed: %s\n", 837 device_xname(sc->sc_dev), usbd_errstr(err)); 838 } 839 sc->sc_ep[SMSC_ENDPT_INTR] = NULL; 840 } 841 842 ifp->if_timer = 0; 843 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 844 845 if (disable) { 846 /* drain */ 847 } 848 } 849 850 int 851 smsc_chip_init(struct smsc_softc *sc) 852 { 853 int err; 854 uint32_t reg_val; 855 int burst_cap; 856 857 /* Enter H/W config mode */ 858 smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 859 860 if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, 861 SMSC_HW_CFG_LRST)) != 0) { 862 smsc_warn_printf(sc, "timed-out waiting for reset to " 863 "complete\n"); 864 goto init_failed; 865 } 866 867 /* Reset the PHY */ 868 smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 869 870 if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, 871 SMSC_PM_CTRL_PHY_RST)) != 0) { 872 smsc_warn_printf(sc, "timed-out waiting for phy reset to " 873 "complete\n"); 874 goto init_failed; 875 } 876 usbd_delay_ms(sc->sc_udev, 40); 877 878 /* Set the mac address */ 879 struct ifnet * const ifp = &sc->sc_ec.ec_if; 880 const char *eaddr = CLLADDR(ifp->if_sadl); 881 if ((err = smsc_setmacaddress(sc, eaddr)) != 0) { 882 smsc_warn_printf(sc, "failed to set the MAC address\n"); 883 goto init_failed; 884 } 885 886 /* 887 * Don't know what the HW_CFG_BIR bit is, but following the reset 888 * sequence as used in the Linux driver. 889 */ 890 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 891 smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 892 goto init_failed; 893 } 894 reg_val |= SMSC_HW_CFG_BIR; 895 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 896 897 /* 898 * There is a so called 'turbo mode' that the linux driver supports, it 899 * seems to allow you to jam multiple frames per Rx transaction. 900 * By default this driver supports that and therefore allows multiple 901 * frames per USB transfer. 902 * 903 * The xfer buffer size needs to reflect this as well, therefore based 904 * on the calculations in the Linux driver the RX bufsize is set to 905 * 18944, 906 * bufsz = (16 * 1024 + 5 * 512) 907 * 908 * Burst capability is the number of URBs that can be in a burst of 909 * data/ethernet frames. 910 */ 911 912 if (sc->sc_udev->ud_speed == USB_SPEED_HIGH) 913 burst_cap = 37; 914 else 915 burst_cap = 128; 916 917 smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 918 919 /* Set the default bulk in delay (magic value from Linux driver) */ 920 smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 921 922 /* 923 * Initialise the RX interface 924 */ 925 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 926 smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", 927 err); 928 goto init_failed; 929 } 930 931 /* 932 * The following settings are used for 'turbo mode', a.k.a multiple 933 * frames per Rx transaction (again info taken form Linux driver). 934 */ 935 reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 936 937 /* 938 * set Rx data offset to ETHER_ALIGN which will make the IP header 939 * align on a word boundary. 940 */ 941 reg_val |= ETHER_ALIGN << SMSC_HW_CFG_RXDOFF_SHIFT; 942 943 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 944 945 /* Clear the status register ? */ 946 smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 947 948 /* Read and display the revision register */ 949 if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 950 smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 951 goto init_failed; 952 } 953 954 /* GPIO/LED setup */ 955 reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 956 SMSC_LED_GPIO_CFG_FDX_LED; 957 smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 958 959 /* 960 * Initialise the TX interface 961 */ 962 smsc_write_reg(sc, SMSC_FLOW, 0); 963 964 smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 965 966 /* Read the current MAC configuration */ 967 if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 968 smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 969 goto init_failed; 970 } 971 972 /* disable pad stripping, collides with checksum offload */ 973 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PADSTR; 974 975 /* Vlan */ 976 smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 977 978 /* 979 * Start TX 980 */ 981 sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 982 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 983 smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 984 985 /* 986 * Start RX 987 */ 988 sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 989 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 990 991 return 0; 992 993 init_failed: 994 smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 995 return err; 996 } 997 998 static int 999 smsc_ifflags_cb(struct ethercom *ec) 1000 { 1001 struct ifnet *ifp = &ec->ec_if; 1002 struct smsc_softc *sc = ifp->if_softc; 1003 1004 mutex_enter(&sc->sc_lock); 1005 1006 const int change = ifp->if_flags ^ sc->sc_if_flags; 1007 if ((change & ~(IFF_CANTCHANGE | IFF_DEBUG)) != 0) { 1008 mutex_exit(&sc->sc_lock); 1009 return ENETRESET; 1010 } 1011 1012 smsc_dbg_printf(sc, "%s: change %x\n", __func__, change); 1013 1014 if ((change & IFF_PROMISC) != 0) { 1015 if (ifp->if_flags & IFF_PROMISC) { 1016 sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 1017 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 1018 } else if (!(ifp->if_flags & IFF_PROMISC)) { 1019 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 1020 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 1021 } 1022 smsc_setmulti(sc); 1023 } 1024 1025 mutex_exit(&sc->sc_lock); 1026 1027 return 0; 1028 } 1029 1030 1031 int 1032 smsc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1033 { 1034 struct smsc_softc * const sc = ifp->if_softc; 1035 1036 smsc_dbg_printf(sc, "%s: cmd %0lx data %p\n", __func__, cmd, data); 1037 1038 int error = ether_ioctl(ifp, cmd, data); 1039 1040 if (error == ENETRESET) { 1041 error = 0; 1042 if (cmd == SIOCADDMULTI || cmd == SIOCDELMULTI) { 1043 if (ifp->if_flags & IFF_RUNNING) { 1044 mutex_enter(&sc->sc_lock); 1045 smsc_setmulti(sc); 1046 mutex_exit(&sc->sc_lock); 1047 } 1048 } 1049 } 1050 1051 mutex_enter(&sc->sc_rxlock); 1052 mutex_enter(&sc->sc_txlock); 1053 sc->sc_if_flags = ifp->if_flags; 1054 mutex_exit(&sc->sc_txlock); 1055 mutex_exit(&sc->sc_rxlock); 1056 1057 return error; 1058 } 1059 1060 int 1061 smsc_match(device_t parent, cfdata_t match, void *aux) 1062 { 1063 struct usb_attach_arg *uaa = aux; 1064 1065 return (usb_lookup(smsc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 1066 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 1067 } 1068 1069 void 1070 smsc_attach(device_t parent, device_t self, void *aux) 1071 { 1072 struct smsc_softc *sc = device_private(self); 1073 struct usb_attach_arg *uaa = aux; 1074 struct usbd_device *dev = uaa->uaa_device; 1075 usb_interface_descriptor_t *id; 1076 usb_endpoint_descriptor_t *ed; 1077 char *devinfop; 1078 struct mii_data *mii; 1079 struct ifnet *ifp; 1080 int err, i; 1081 uint32_t mac_h, mac_l; 1082 1083 sc->sc_dev = self; 1084 sc->sc_udev = dev; 1085 sc->sc_stopping = false; 1086 1087 aprint_naive("\n"); 1088 aprint_normal("\n"); 1089 1090 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 1091 aprint_normal_dev(self, "%s\n", devinfop); 1092 usbd_devinfo_free(devinfop); 1093 1094 err = usbd_set_config_no(dev, SMSC_CONFIG_INDEX, 1); 1095 if (err) { 1096 aprint_error_dev(self, "failed to set configuration" 1097 ", err=%s\n", usbd_errstr(err)); 1098 return; 1099 } 1100 1101 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1102 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1103 if (err) { 1104 aprint_error_dev(self, "getting interface handle failed\n"); 1105 return; 1106 } 1107 1108 id = usbd_get_interface_descriptor(sc->sc_iface); 1109 1110 if (sc->sc_udev->ud_speed >= USB_SPEED_HIGH) 1111 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1112 else 1113 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1114 1115 /* Find endpoints. */ 1116 for (i = 0; i < id->bNumEndpoints; i++) { 1117 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1118 if (!ed) { 1119 aprint_error_dev(self, "couldn't get ep %d\n", i); 1120 return; 1121 } 1122 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1123 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1124 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1125 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1126 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1127 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1128 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1129 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1130 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1131 } 1132 } 1133 1134 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, USB_TASKQ_MPSAFE); 1135 1136 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 1137 mutex_init(&sc->sc_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1138 mutex_init(&sc->sc_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1139 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 1140 1141 ifp = &sc->sc_ec.ec_if; 1142 ifp->if_softc = sc; 1143 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 1144 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1145 ifp->if_extflags = IFEF_MPSAFE; 1146 ifp->if_init = smsc_init; 1147 ifp->if_ioctl = smsc_ioctl; 1148 ifp->if_start = smsc_start; 1149 ifp->if_stop = smsc_stop; 1150 1151 #ifdef notyet 1152 /* 1153 * We can do TCPv4, and UDPv4 checksums in hardware. 1154 */ 1155 ifp->if_capabilities |= 1156 /*IFCAP_CSUM_TCPv4_Tx |*/ IFCAP_CSUM_TCPv4_Rx | 1157 /*IFCAP_CSUM_UDPv4_Tx |*/ IFCAP_CSUM_UDPv4_Rx; 1158 #endif 1159 1160 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 1161 1162 /* Setup some of the basics */ 1163 sc->sc_phyno = 1; 1164 1165 /* 1166 * Attempt to get the mac address, if an EEPROM is not attached this 1167 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1168 * address based on urandom. 1169 */ 1170 memset(sc->sc_enaddr, 0xff, ETHER_ADDR_LEN); 1171 1172 prop_dictionary_t dict = device_properties(self); 1173 prop_data_t eaprop = prop_dictionary_get(dict, "mac-address"); 1174 1175 if (eaprop != NULL) { 1176 KASSERT(prop_object_type(eaprop) == PROP_TYPE_DATA); 1177 KASSERT(prop_data_size(eaprop) == ETHER_ADDR_LEN); 1178 memcpy(sc->sc_enaddr, prop_data_data_nocopy(eaprop), 1179 ETHER_ADDR_LEN); 1180 } else { 1181 /* Check if there is already a MAC address in the register */ 1182 if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1183 (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1184 sc->sc_enaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1185 sc->sc_enaddr[4] = (uint8_t)((mac_h) & 0xff); 1186 sc->sc_enaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1187 sc->sc_enaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1188 sc->sc_enaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1189 sc->sc_enaddr[0] = (uint8_t)((mac_l) & 0xff); 1190 } 1191 } 1192 1193 aprint_normal_dev(self, "Ethernet address %s\n", 1194 ether_sprintf(sc->sc_enaddr)); 1195 1196 IFQ_SET_READY(&ifp->if_snd); 1197 1198 /* Initialize MII/media info. */ 1199 mii = &sc->sc_mii; 1200 mii->mii_ifp = ifp; 1201 mii->mii_readreg = smsc_miibus_readreg; 1202 mii->mii_writereg = smsc_miibus_writereg; 1203 mii->mii_statchg = smsc_miibus_statchg; 1204 mii->mii_flags = MIIF_AUTOTSLEEP; 1205 sc->sc_ec.ec_mii = mii; 1206 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1207 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1208 1209 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1210 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1211 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1212 } else 1213 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1214 1215 callout_init(&sc->sc_stat_ch, CALLOUT_MPSAFE); 1216 1217 if_initialize(ifp); 1218 sc->sc_ipq = if_percpuq_create(&sc->sc_ec.ec_if); 1219 ether_ifattach(ifp, sc->sc_enaddr); 1220 ether_set_ifflags_cb(&sc->sc_ec, smsc_ifflags_cb); 1221 if_register(ifp); 1222 1223 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1224 RND_TYPE_NET, RND_FLAG_DEFAULT); 1225 1226 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1227 } 1228 1229 int 1230 smsc_detach(device_t self, int flags) 1231 { 1232 struct smsc_softc *sc = device_private(self); 1233 struct ifnet *ifp = &sc->sc_ec.ec_if; 1234 1235 mutex_enter(&sc->sc_lock); 1236 sc->sc_dying = true; 1237 mutex_exit(&sc->sc_lock); 1238 1239 callout_halt(&sc->sc_stat_ch, NULL); 1240 1241 if (ifp->if_flags & IFF_RUNNING) 1242 smsc_stop_locked(ifp, 1); 1243 1244 /* 1245 * Remove any pending tasks. They cannot be executing because they run 1246 * in the same thread as detach. 1247 */ 1248 usb_rem_task_wait(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER, 1249 NULL); 1250 1251 mutex_enter(&sc->sc_lock); 1252 sc->sc_refcnt--; 1253 while (sc->sc_refcnt > 0) { 1254 /* Wait for processes to go away */ 1255 cv_wait(&sc->sc_detachcv, &sc->sc_lock); 1256 } 1257 1258 #ifdef DIAGNOSTIC 1259 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1260 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1261 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1262 printf("%s: detach has active endpoints\n", 1263 device_xname(sc->sc_dev)); 1264 #endif 1265 1266 mutex_exit(&sc->sc_lock); 1267 1268 rnd_detach_source(&sc->sc_rnd_source); 1269 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1270 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1271 if (ifp->if_softc != NULL) { 1272 ether_ifdetach(ifp); 1273 if_detach(ifp); 1274 } 1275 1276 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1277 1278 cv_destroy(&sc->sc_detachcv); 1279 mutex_destroy(&sc->sc_mii_lock); 1280 mutex_destroy(&sc->sc_rxlock); 1281 mutex_destroy(&sc->sc_txlock); 1282 mutex_destroy(&sc->sc_lock); 1283 1284 return 0; 1285 } 1286 1287 void 1288 smsc_tick_task(void *xsc) 1289 { 1290 struct smsc_softc * const sc = xsc; 1291 1292 if (sc == NULL) 1293 return; 1294 1295 mutex_enter(&sc->sc_lock); 1296 1297 if (sc->sc_dying) { 1298 mutex_exit(&sc->sc_lock); 1299 return; 1300 } 1301 1302 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1303 struct mii_data * const mii = &sc->sc_mii; 1304 1305 sc->sc_refcnt++; 1306 mutex_exit(&sc->sc_lock); 1307 1308 mii_tick(mii); 1309 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) 1310 smsc_miibus_statchg(ifp); 1311 1312 mutex_enter(&sc->sc_lock); 1313 sc->sc_ttpending = false; 1314 1315 if (--sc->sc_refcnt < 0) 1316 cv_broadcast(&sc->sc_detachcv); 1317 1318 if (sc->sc_dying) { 1319 mutex_exit(&sc->sc_lock); 1320 return; 1321 } 1322 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 1323 1324 mutex_exit(&sc->sc_lock); 1325 } 1326 1327 int 1328 smsc_activate(device_t self, enum devact act) 1329 { 1330 struct smsc_softc *sc = device_private(self); 1331 1332 switch (act) { 1333 case DVACT_DEACTIVATE: 1334 if_deactivate(&sc->sc_ec.ec_if); 1335 1336 mutex_enter(&sc->sc_lock); 1337 sc->sc_dying = true; 1338 1339 mutex_enter(&sc->sc_rxlock); 1340 mutex_enter(&sc->sc_txlock); 1341 sc->sc_stopping = true; 1342 mutex_exit(&sc->sc_txlock); 1343 mutex_exit(&sc->sc_rxlock); 1344 1345 mutex_exit(&sc->sc_lock); 1346 return 0; 1347 default: 1348 return EOPNOTSUPP; 1349 } 1350 return 0; 1351 } 1352 1353 void 1354 smsc_lock_mii(struct smsc_softc *sc) 1355 { 1356 1357 mutex_enter(&sc->sc_lock); 1358 sc->sc_refcnt++; 1359 mutex_exit(&sc->sc_lock); 1360 1361 mutex_enter(&sc->sc_mii_lock); 1362 } 1363 1364 void 1365 smsc_unlock_mii(struct smsc_softc *sc) 1366 { 1367 1368 mutex_exit(&sc->sc_mii_lock); 1369 mutex_enter(&sc->sc_lock); 1370 if (--sc->sc_refcnt < 0) 1371 cv_broadcast(&sc->sc_detachcv); 1372 mutex_exit(&sc->sc_lock); 1373 } 1374 1375 void 1376 smsc_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1377 { 1378 struct smsc_chain * const c = (struct smsc_chain *)priv; 1379 struct smsc_softc * const sc = c->sc_sc; 1380 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1381 u_char *buf = c->sc_buf; 1382 uint32_t total_len; 1383 1384 mutex_enter(&sc->sc_rxlock); 1385 if (sc->sc_stopping) { 1386 smsc_dbg_printf(sc, "%s: stopping\n", __func__); 1387 mutex_exit(&sc->sc_rxlock); 1388 return; 1389 } 1390 1391 if (!(sc->sc_if_flags & IFF_RUNNING)) { 1392 smsc_dbg_printf(sc, "%s: not running\n", __func__); 1393 mutex_exit(&sc->sc_rxlock); 1394 return; 1395 } 1396 1397 if (status != USBD_NORMAL_COMPLETION) { 1398 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1399 mutex_exit(&sc->sc_rxlock); 1400 return; 1401 } 1402 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1403 printf("%s: usb errors on rx: %s\n", 1404 device_xname(sc->sc_dev), usbd_errstr(status)); 1405 } 1406 if (status == USBD_STALLED) 1407 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1408 goto done; 1409 } 1410 1411 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1412 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1413 1414 while (total_len != 0) { 1415 uint32_t rxhdr; 1416 if (total_len < sizeof(rxhdr)) { 1417 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1418 total_len, sizeof(rxhdr)); 1419 ifp->if_ierrors++; 1420 goto done; 1421 } 1422 1423 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1424 rxhdr = le32toh(rxhdr); 1425 buf += sizeof(rxhdr); 1426 total_len -= sizeof(rxhdr); 1427 1428 if (rxhdr & SMSC_RX_STAT_COLLISION) 1429 ifp->if_collisions++; 1430 1431 if (rxhdr & (SMSC_RX_STAT_ERROR 1432 | SMSC_RX_STAT_LENGTH_ERROR 1433 | SMSC_RX_STAT_MII_ERROR)) { 1434 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1435 ifp->if_ierrors++; 1436 goto done; 1437 } 1438 1439 uint16_t pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1440 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1441 "0x%08x\n", total_len, pktlen, rxhdr); 1442 1443 if (pktlen < ETHER_HDR_LEN) { 1444 smsc_dbg_printf(sc, "pktlen %d < ETHER_HDR_LEN %d\n", 1445 pktlen, ETHER_HDR_LEN); 1446 ifp->if_ierrors++; 1447 goto done; 1448 } 1449 1450 pktlen += ETHER_ALIGN; 1451 1452 if (pktlen > MCLBYTES) { 1453 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1454 pktlen, MCLBYTES); 1455 ifp->if_ierrors++; 1456 goto done; 1457 } 1458 1459 if (pktlen > total_len) { 1460 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1461 pktlen, total_len); 1462 ifp->if_ierrors++; 1463 goto done; 1464 } 1465 1466 struct mbuf *m = smsc_newbuf(); 1467 if (m == NULL) { 1468 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1469 ifp->if_ierrors++; 1470 goto done; 1471 } 1472 1473 m_set_rcvif(m, ifp); 1474 m->m_pkthdr.len = m->m_len = pktlen; 1475 m->m_flags |= M_HASFCS; 1476 m_adj(m, ETHER_ALIGN); 1477 1478 KASSERT(m->m_len < MCLBYTES); 1479 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1480 1481 /* Check if RX TCP/UDP checksumming is being offloaded */ 1482 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1483 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1484 struct ether_header *eh; 1485 1486 eh = mtod(m, struct ether_header *); 1487 1488 /* Remove the extra 2 bytes of the csum */ 1489 m_adj(m, -2); 1490 1491 /* 1492 * The checksum appears to be simplistically calculated 1493 * over the udp/tcp header and data up to the end of the 1494 * eth frame. Which means if the eth frame is padded 1495 * the csum calculation is incorrectly performed over 1496 * the padding bytes as well. Therefore to be safe we 1497 * ignore the H/W csum on frames less than or equal to 1498 * 64 bytes. 1499 * 1500 * Ignore H/W csum for non-IPv4 packets. 1501 */ 1502 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1503 be16toh(eh->ether_type), pktlen); 1504 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1505 pktlen > ETHER_MIN_LEN) { 1506 1507 m->m_pkthdr.csum_flags |= 1508 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1509 1510 /* 1511 * Copy the TCP/UDP checksum from the last 2 1512 * bytes of the transfer and put in the 1513 * csum_data field. 1514 */ 1515 memcpy(&m->m_pkthdr.csum_data, 1516 buf + pktlen - 2, 2); 1517 /* 1518 * The data is copied in network order, but the 1519 * csum algorithm in the kernel expects it to be 1520 * in host network order. 1521 */ 1522 m->m_pkthdr.csum_data = 1523 ntohs(m->m_pkthdr.csum_data); 1524 smsc_dbg_printf(sc, 1525 "RX checksum offloaded (0x%04x)\n", 1526 m->m_pkthdr.csum_data); 1527 } 1528 } 1529 1530 /* round up to next longword */ 1531 pktlen = (pktlen + 3) & ~0x3; 1532 1533 /* total_len does not include the padding */ 1534 if (pktlen > total_len) 1535 pktlen = total_len; 1536 1537 buf += pktlen; 1538 total_len -= pktlen; 1539 1540 mutex_exit(&sc->sc_rxlock); 1541 1542 /* push the packet up */ 1543 if_percpuq_enqueue(sc->sc_ipq, m); 1544 1545 mutex_enter(&sc->sc_rxlock); 1546 if (sc->sc_stopping) { 1547 smsc_dbg_printf(sc, "%s: stopping\n", __func__); 1548 mutex_exit(&sc->sc_rxlock); 1549 return; 1550 } 1551 } 1552 1553 done: 1554 mutex_exit(&sc->sc_rxlock); 1555 1556 /* Setup new transfer. */ 1557 usbd_setup_xfer(xfer, c, c->sc_buf, sc->sc_bufsz, USBD_SHORT_XFER_OK, 1558 USBD_NO_TIMEOUT, smsc_rxeof); 1559 usbd_transfer(xfer); 1560 1561 return; 1562 } 1563 1564 void 1565 smsc_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1566 { 1567 struct smsc_chain *c = priv; 1568 struct smsc_softc *sc = c->sc_sc; 1569 struct ifnet *ifp = &sc->sc_ec.ec_if; 1570 1571 mutex_enter(&sc->sc_txlock); 1572 if (sc->sc_stopping) { 1573 smsc_dbg_printf(sc, "%s: stopping\n", __func__); 1574 mutex_exit(&sc->sc_txlock); 1575 return; 1576 } 1577 1578 sc->sc_cdata.tx_free++; 1579 ifp->if_timer = 0; 1580 ifp->if_flags &= ~IFF_OACTIVE; 1581 1582 if (status != USBD_NORMAL_COMPLETION) { 1583 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1584 mutex_exit(&sc->sc_txlock); 1585 return; 1586 } 1587 ifp->if_oerrors++; 1588 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1589 usbd_errstr(status)); 1590 if (status == USBD_STALLED) 1591 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1592 mutex_exit(&sc->sc_txlock); 1593 return; 1594 } 1595 ifp->if_opackets++; 1596 1597 m_freem(c->sc_mbuf); 1598 c->sc_mbuf = NULL; 1599 1600 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1601 smsc_start_locked(ifp); 1602 1603 mutex_exit(&sc->sc_txlock); 1604 } 1605 1606 int 1607 smsc_tx_list_init(struct smsc_softc *sc) 1608 { 1609 struct smsc_cdata *cd = &sc->sc_cdata; 1610 struct smsc_chain *c; 1611 int i; 1612 1613 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1614 c = &cd->tx_chain[i]; 1615 c->sc_sc = sc; 1616 c->sc_idx = i; 1617 c->sc_mbuf = NULL; 1618 if (c->sc_xfer == NULL) { 1619 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_TX], 1620 sc->sc_bufsz, USBD_FORCE_SHORT_XFER, 0, 1621 &c->sc_xfer); 1622 if (error) 1623 return EIO; 1624 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1625 } 1626 } 1627 1628 cd->tx_free = SMSC_TX_LIST_CNT; 1629 cd->tx_next = 0; 1630 1631 return 0; 1632 } 1633 1634 void 1635 smsc_tx_list_free(struct smsc_softc *sc) 1636 { 1637 /* Free TX resources. */ 1638 for (size_t i = 0; i < SMSC_TX_LIST_CNT; i++) { 1639 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 1640 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 1641 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 1642 } 1643 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 1644 usbd_destroy_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 1645 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 1646 } 1647 } 1648 } 1649 1650 int 1651 smsc_rx_list_init(struct smsc_softc *sc) 1652 { 1653 struct smsc_cdata *cd = &sc->sc_cdata; 1654 struct smsc_chain *c; 1655 int i; 1656 1657 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1658 c = &cd->rx_chain[i]; 1659 c->sc_sc = sc; 1660 c->sc_idx = i; 1661 c->sc_mbuf = NULL; 1662 if (c->sc_xfer == NULL) { 1663 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_RX], 1664 sc->sc_bufsz, USBD_SHORT_XFER_OK, 0, &c->sc_xfer); 1665 if (error) 1666 return error; 1667 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1668 } 1669 } 1670 1671 return 0; 1672 } 1673 1674 void 1675 smsc_rx_list_free(struct smsc_softc *sc) 1676 { 1677 /* Free RX resources. */ 1678 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 1679 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 1680 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 1681 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 1682 } 1683 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 1684 usbd_destroy_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 1685 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 1686 } 1687 } 1688 } 1689 1690 struct mbuf * 1691 smsc_newbuf(void) 1692 { 1693 struct mbuf *m; 1694 1695 MGETHDR(m, M_DONTWAIT, MT_DATA); 1696 if (m == NULL) 1697 return NULL; 1698 1699 MCLGET(m, M_DONTWAIT); 1700 if (!(m->m_flags & M_EXT)) { 1701 m_freem(m); 1702 return NULL; 1703 } 1704 1705 return m; 1706 } 1707 1708 int 1709 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1710 { 1711 struct smsc_chain * const c = &sc->sc_cdata.tx_chain[idx]; 1712 uint32_t txhdr; 1713 uint32_t frm_len = 0; 1714 1715 /* 1716 * Each frame is prefixed with two 32-bit values describing the 1717 * length of the packet and buffer. 1718 */ 1719 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1720 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1721 txhdr = htole32(txhdr); 1722 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1723 1724 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1725 txhdr = htole32(txhdr); 1726 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1727 1728 frm_len += 8; 1729 1730 /* Next copy in the actual packet */ 1731 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1732 frm_len += m->m_pkthdr.len; 1733 1734 c->sc_mbuf = m; 1735 1736 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, frm_len, 1737 USBD_FORCE_SHORT_XFER, 10000, smsc_txeof); 1738 1739 usbd_status err = usbd_transfer(c->sc_xfer); 1740 if (err != USBD_IN_PROGRESS) { 1741 return EIO; 1742 } 1743 1744 return 0; 1745 } 1746
Indexes created Thu Oct 02 01:09:59 GMT 2025