if_smsc.c revision 1.19.2.3
1 /* $NetBSD: if_smsc.c,v 1.19.2.3 2017/04/05 19:54:19 snj 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 #ifdef _KERNEL_OPT 64 #include "opt_usb.h" 65 #include "opt_inet.h" 66 #endif 67 68 #include <sys/param.h> 69 #include <sys/bus.h> 70 #include <sys/systm.h> 71 #include <sys/sockio.h> 72 #include <sys/mbuf.h> 73 #include <sys/mutex.h> 74 #include <sys/kernel.h> 75 #include <sys/proc.h> 76 #include <sys/socket.h> 77 78 #include <sys/device.h> 79 80 #include <sys/rnd.h> 81 82 #include <net/if.h> 83 #include <net/if_dl.h> 84 #include <net/if_media.h> 85 #include <net/if_ether.h> 86 87 #include <net/bpf.h> 88 89 #ifdef INET 90 #include <netinet/in.h> 91 #include <netinet/if_inarp.h> 92 #endif 93 94 #include <dev/mii/mii.h> 95 #include <dev/mii/miivar.h> 96 97 #include <dev/usb/usb.h> 98 #include <dev/usb/usbdi.h> 99 #include <dev/usb/usbdi_util.h> 100 #include <dev/usb/usbdivar.h> 101 #include <dev/usb/usbdevs.h> 102 103 #include <dev/usb/if_smscreg.h> 104 #include <dev/usb/if_smscvar.h> 105 106 #include "ioconf.h" 107 108 #ifdef USB_DEBUG 109 int smsc_debug = 0; 110 #endif 111 112 #define ETHER_ALIGN 2 113 /* 114 * Various supported device vendors/products. 115 */ 116 static const struct usb_devno smsc_devs[] = { 117 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN89530 }, 118 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9530 }, 119 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9730 }, 120 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500 }, 121 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A }, 122 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_ALT }, 123 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_HAL }, 124 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_SAL10 }, 125 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_ALT }, 126 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_SAL10 }, 127 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505 }, 128 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A }, 129 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_HAL }, 130 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_SAL10 }, 131 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505_SAL10 }, 132 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14 }, 133 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_ALT }, 134 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_SAL10 } 135 }; 136 137 #ifdef USB_DEBUG 138 #define smsc_dbg_printf(sc, fmt, args...) \ 139 do { \ 140 if (smsc_debug > 0) \ 141 printf("debug: " fmt, ##args); \ 142 } while(0) 143 #else 144 #define smsc_dbg_printf(sc, fmt, args...) 145 #endif 146 147 #define smsc_warn_printf(sc, fmt, args...) \ 148 printf("%s: warning: " fmt, device_xname((sc)->sc_dev), ##args) 149 150 #define smsc_err_printf(sc, fmt, args...) \ 151 printf("%s: error: " fmt, device_xname((sc)->sc_dev), ##args) 152 153 /* Function declarations */ 154 int smsc_chip_init(struct smsc_softc *); 155 void smsc_setmulti(struct smsc_softc *); 156 int smsc_setmacaddress(struct smsc_softc *, const uint8_t *); 157 158 int smsc_match(device_t, cfdata_t, void *); 159 void smsc_attach(device_t, device_t, void *); 160 int smsc_detach(device_t, int); 161 int smsc_activate(device_t, enum devact); 162 163 int smsc_init(struct ifnet *); 164 int smsc_init_locked(struct ifnet *); 165 void smsc_start(struct ifnet *); 166 void smsc_start_locked(struct ifnet *); 167 int smsc_ioctl(struct ifnet *, u_long, void *); 168 void smsc_stop(struct ifnet *, int); 169 void smsc_stop_locked(struct ifnet *, int); 170 171 void smsc_reset(struct smsc_softc *); 172 struct mbuf *smsc_newbuf(void); 173 174 void smsc_tick(void *); 175 void smsc_tick_task(void *); 176 void smsc_miibus_statchg(struct ifnet *); 177 int smsc_miibus_readreg(device_t, int, int); 178 void smsc_miibus_writereg(device_t, int, int, int); 179 int smsc_ifmedia_upd(struct ifnet *); 180 void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 181 void smsc_lock_mii(struct smsc_softc *); 182 void smsc_unlock_mii(struct smsc_softc *); 183 184 int smsc_tx_list_init(struct smsc_softc *); 185 void smsc_tx_list_free(struct smsc_softc *); 186 int smsc_rx_list_init(struct smsc_softc *); 187 void smsc_rx_list_free(struct smsc_softc *); 188 int smsc_encap(struct smsc_softc *, struct mbuf *, int); 189 void smsc_rxeof(struct usbd_xfer *, void *, usbd_status); 190 void smsc_txeof(struct usbd_xfer *, void *, usbd_status); 191 192 int smsc_read_reg(struct smsc_softc *, uint32_t, uint32_t *); 193 int smsc_write_reg(struct smsc_softc *, uint32_t, uint32_t); 194 int smsc_wait_for_bits(struct smsc_softc *, uint32_t, uint32_t); 195 int smsc_sethwcsum(struct smsc_softc *); 196 197 CFATTACH_DECL_NEW(usmsc, sizeof(struct smsc_softc), smsc_match, smsc_attach, 198 smsc_detach, smsc_activate); 199 200 int 201 smsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data) 202 { 203 usb_device_request_t req; 204 uint32_t buf; 205 usbd_status err; 206 207 req.bmRequestType = UT_READ_VENDOR_DEVICE; 208 req.bRequest = SMSC_UR_READ_REG; 209 USETW(req.wValue, 0); 210 USETW(req.wIndex, off); 211 USETW(req.wLength, 4); 212 213 err = usbd_do_request(sc->sc_udev, &req, &buf); 214 if (err != 0) 215 smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off); 216 217 *data = le32toh(buf); 218 219 return err; 220 } 221 222 int 223 smsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data) 224 { 225 usb_device_request_t req; 226 uint32_t buf; 227 usbd_status err; 228 229 buf = htole32(data); 230 231 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 232 req.bRequest = SMSC_UR_WRITE_REG; 233 USETW(req.wValue, 0); 234 USETW(req.wIndex, off); 235 USETW(req.wLength, 4); 236 237 err = usbd_do_request(sc->sc_udev, &req, &buf); 238 if (err != 0) 239 smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off); 240 241 return err; 242 } 243 244 int 245 smsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits) 246 { 247 uint32_t val; 248 int err, i; 249 250 for (i = 0; i < 100; i++) { 251 if ((err = smsc_read_reg(sc, reg, &val)) != 0) 252 return err; 253 if (!(val & bits)) 254 return 0; 255 DELAY(5); 256 } 257 258 return 1; 259 } 260 261 int 262 smsc_miibus_readreg(device_t dev, int phy, int reg) 263 { 264 struct smsc_softc *sc = device_private(dev); 265 uint32_t addr; 266 uint32_t val = 0; 267 268 smsc_lock_mii(sc); 269 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 270 smsc_warn_printf(sc, "MII is busy\n"); 271 goto done; 272 } 273 274 addr = (phy << 11) | (reg << 6) | SMSC_MII_READ; 275 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 276 277 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 278 smsc_warn_printf(sc, "MII read timeout\n"); 279 280 smsc_read_reg(sc, SMSC_MII_DATA, &val); 281 282 done: 283 smsc_unlock_mii(sc); 284 285 return val & 0xFFFF; 286 } 287 288 void 289 smsc_miibus_writereg(device_t dev, int phy, int reg, int val) 290 { 291 struct smsc_softc *sc = device_private(dev); 292 uint32_t addr; 293 294 if (sc->sc_phyno != phy) 295 return; 296 297 smsc_lock_mii(sc); 298 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 299 smsc_warn_printf(sc, "MII is busy\n"); 300 smsc_unlock_mii(sc); 301 return; 302 } 303 304 smsc_write_reg(sc, SMSC_MII_DATA, val); 305 306 addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE; 307 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 308 smsc_unlock_mii(sc); 309 310 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 311 smsc_warn_printf(sc, "MII write timeout\n"); 312 } 313 314 void 315 smsc_miibus_statchg(struct ifnet *ifp) 316 { 317 struct smsc_softc *sc = ifp->if_softc; 318 struct mii_data *mii = &sc->sc_mii; 319 int err; 320 uint32_t flow; 321 uint32_t afc_cfg; 322 323 if (mii == NULL || ifp == NULL || 324 (ifp->if_flags & IFF_RUNNING) == 0) 325 return; 326 327 /* Use the MII status to determine link status */ 328 sc->sc_flags &= ~SMSC_FLAG_LINK; 329 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 330 (IFM_ACTIVE | IFM_AVALID)) { 331 switch (IFM_SUBTYPE(mii->mii_media_active)) { 332 case IFM_10_T: 333 case IFM_100_TX: 334 sc->sc_flags |= SMSC_FLAG_LINK; 335 break; 336 case IFM_1000_T: 337 /* Gigabit ethernet not supported by chipset */ 338 break; 339 default: 340 break; 341 } 342 } 343 344 /* Lost link, do nothing. */ 345 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 346 smsc_dbg_printf(sc, "link flag not set\n"); 347 return; 348 } 349 350 err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg); 351 if (err) { 352 smsc_warn_printf(sc, "failed to read initial AFC_CFG, " 353 "error %d\n", err); 354 return; 355 } 356 357 /* Enable/disable full duplex operation and TX/RX pause */ 358 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 359 smsc_dbg_printf(sc, "full duplex operation\n"); 360 sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN; 361 sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX; 362 363 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 364 flow = 0xffff0002; 365 else 366 flow = 0; 367 368 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 369 afc_cfg |= 0xf; 370 else 371 afc_cfg &= ~0xf; 372 373 } else { 374 smsc_dbg_printf(sc, "half duplex operation\n"); 375 sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX; 376 sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN; 377 378 flow = 0; 379 afc_cfg |= 0xf; 380 } 381 382 err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 383 err += smsc_write_reg(sc, SMSC_FLOW, flow); 384 err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg); 385 if (err) 386 smsc_warn_printf(sc, "media change failed, error %d\n", err); 387 } 388 389 int 390 smsc_ifmedia_upd(struct ifnet *ifp) 391 { 392 struct smsc_softc *sc = ifp->if_softc; 393 struct mii_data *mii = &sc->sc_mii; 394 int err; 395 396 if (mii->mii_instance) { 397 struct mii_softc *miisc; 398 399 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 400 mii_phy_reset(miisc); 401 } 402 err = mii_mediachg(mii); 403 return err; 404 } 405 406 void 407 smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 408 { 409 struct smsc_softc *sc = ifp->if_softc; 410 struct mii_data *mii = &sc->sc_mii; 411 412 mii_pollstat(mii); 413 414 ifmr->ifm_active = mii->mii_media_active; 415 ifmr->ifm_status = mii->mii_media_status; 416 } 417 418 static inline uint32_t 419 smsc_hash(uint8_t addr[ETHER_ADDR_LEN]) 420 { 421 return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 422 } 423 424 void 425 smsc_setmulti(struct smsc_softc *sc) 426 { 427 struct ifnet *ifp = &sc->sc_ec.ec_if; 428 struct ether_multi *enm; 429 struct ether_multistep step; 430 uint32_t hashtbl[2] = { 0, 0 }; 431 uint32_t hash; 432 433 if (sc->sc_dying) 434 return; 435 436 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 437 allmulti: 438 smsc_dbg_printf(sc, "receive all multicast enabled\n"); 439 sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 440 sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 441 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 442 return; 443 } else { 444 sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 445 sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 446 } 447 448 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 449 while (enm != NULL) { 450 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 451 ETHER_ADDR_LEN) != 0) 452 goto allmulti; 453 454 hash = smsc_hash(enm->enm_addrlo); 455 hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 456 ETHER_NEXT_MULTI(step, enm); 457 } 458 459 /* Debug */ 460 if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) { 461 smsc_dbg_printf(sc, "receive select group of macs\n"); 462 } else { 463 smsc_dbg_printf(sc, "receive own packets only\n"); 464 } 465 466 /* Write the hash table and mac control registers */ 467 ifp->if_flags &= ~IFF_ALLMULTI; 468 smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 469 smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 470 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 471 } 472 473 int 474 smsc_sethwcsum(struct smsc_softc *sc) 475 { 476 struct ifnet *ifp = &sc->sc_ec.ec_if; 477 uint32_t val; 478 int err; 479 480 if (!ifp) 481 return EIO; 482 483 err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 484 if (err != 0) { 485 smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", 486 err); 487 return err; 488 } 489 490 /* Enable/disable the Rx checksum */ 491 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx)) 492 val |= (SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 493 else 494 val &= ~(SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 495 496 /* Enable/disable the Tx checksum (currently not supported) */ 497 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx)) 498 val |= SMSC_COE_CTRL_TX_EN; 499 else 500 val &= ~SMSC_COE_CTRL_TX_EN; 501 502 sc->sc_coe_ctrl = val; 503 504 err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 505 if (err != 0) { 506 smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", 507 err); 508 return err; 509 } 510 511 return 0; 512 } 513 514 int 515 smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 516 { 517 int err; 518 uint32_t val; 519 520 smsc_dbg_printf(sc, "setting mac address to " 521 "%02x:%02x:%02x:%02x:%02x:%02x\n", 522 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 523 524 val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 525 if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 526 goto done; 527 528 val = (addr[5] << 8) | addr[4]; 529 err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 530 531 done: 532 return err; 533 } 534 535 void 536 smsc_reset(struct smsc_softc *sc) 537 { 538 if (sc->sc_dying) 539 return; 540 541 /* Wait a little while for the chip to get its brains in order. */ 542 DELAY(1000); 543 544 /* Reinitialize controller to achieve full reset. */ 545 smsc_chip_init(sc); 546 } 547 548 int 549 smsc_init(struct ifnet *ifp) 550 { 551 struct smsc_softc *sc = ifp->if_softc; 552 553 mutex_enter(&sc->sc_lock); 554 int ret = smsc_init_locked(ifp); 555 mutex_exit(&sc->sc_lock); 556 557 return ret; 558 } 559 560 int 561 smsc_init_locked(struct ifnet *ifp) 562 { 563 struct smsc_softc * const sc = ifp->if_softc; 564 usbd_status err; 565 566 if (sc->sc_dying) 567 return EIO; 568 569 /* Cancel pending I/O */ 570 smsc_stop_locked(ifp, 1); 571 572 /* Reset the ethernet interface. */ 573 smsc_reset(sc); 574 575 /* Load the multicast filter. */ 576 smsc_setmulti(sc); 577 578 /* TCP/UDP checksum offload engines. */ 579 smsc_sethwcsum(sc); 580 581 /* Open RX and TX pipes. */ 582 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 583 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_RX]); 584 if (err) { 585 printf("%s: open rx pipe failed: %s\n", 586 device_xname(sc->sc_dev), usbd_errstr(err)); 587 goto fail; 588 } 589 590 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 591 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_TX]); 592 if (err) { 593 printf("%s: open tx pipe failed: %s\n", 594 device_xname(sc->sc_dev), usbd_errstr(err)); 595 goto fail1; 596 } 597 598 /* Init RX ring. */ 599 if (smsc_rx_list_init(sc)) { 600 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 601 goto fail2; 602 } 603 604 /* Init TX ring. */ 605 if (smsc_tx_list_init(sc)) { 606 aprint_error_dev(sc->sc_dev, "tx list init failed\n"); 607 goto fail3; 608 } 609 610 /* Start up the receive pipe. */ 611 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 612 struct smsc_chain *c = &sc->sc_cdata.rx_chain[i]; 613 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, sc->sc_bufsz, 614 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, smsc_rxeof); 615 usbd_transfer(c->sc_xfer); 616 } 617 618 sc->sc_stopping = false; 619 620 /* Indicate we are up and running. */ 621 ifp->if_flags |= IFF_RUNNING; 622 ifp->if_flags &= ~IFF_OACTIVE; 623 624 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 625 626 return 0; 627 628 fail3: 629 smsc_rx_list_free(sc); 630 fail2: 631 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 632 fail1: 633 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 634 fail: 635 return EIO; 636 } 637 638 void 639 smsc_start(struct ifnet *ifp) 640 { 641 struct smsc_softc * const sc = ifp->if_softc; 642 643 mutex_enter(&sc->sc_txlock); 644 if (!sc->sc_stopping) 645 smsc_start_locked(ifp); 646 mutex_exit(&sc->sc_txlock); 647 } 648 649 void 650 smsc_start_locked(struct ifnet *ifp) 651 { 652 struct smsc_softc * const sc = ifp->if_softc; 653 struct mbuf *m_head = NULL; 654 655 KASSERT(mutex_owned(&sc->sc_txlock)); 656 657 /* Don't send anything if there is no link or controller is busy. */ 658 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 659 return; 660 } 661 662 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) 663 return; 664 665 IFQ_POLL(&ifp->if_snd, m_head); 666 if (m_head == NULL) 667 return; 668 669 if (smsc_encap(sc, m_head, 0)) { 670 return; 671 } 672 IFQ_DEQUEUE(&ifp->if_snd, m_head); 673 674 bpf_mtap(ifp, m_head); 675 676 ifp->if_flags |= IFF_OACTIVE; 677 678 /* 679 * Set a timeout in case the chip goes out to lunch. 680 */ 681 ifp->if_timer = 5; 682 } 683 684 void 685 smsc_tick(void *xsc) 686 { 687 struct smsc_softc *sc = xsc; 688 689 if (sc == NULL) 690 return; 691 692 if (sc->sc_dying) 693 return; 694 695 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 696 } 697 698 void 699 smsc_stop(struct ifnet *ifp, int disable) 700 { 701 struct smsc_softc * const sc = ifp->if_softc; 702 703 mutex_enter(&sc->sc_lock); 704 smsc_stop_locked(ifp, disable); 705 mutex_exit(&sc->sc_lock); 706 } 707 708 void 709 smsc_stop_locked(struct ifnet *ifp, int disable) 710 { 711 struct smsc_softc * const sc = ifp->if_softc; 712 usbd_status err; 713 714 // smsc_reset(sc); 715 716 KASSERT(mutex_owned(&sc->sc_lock)); 717 mutex_enter(&sc->sc_rxlock); 718 mutex_enter(&sc->sc_txlock); 719 sc->sc_stopping = true; 720 mutex_exit(&sc->sc_txlock); 721 mutex_exit(&sc->sc_rxlock); 722 723 callout_stop(&sc->sc_stat_ch); 724 725 /* Stop transfers. */ 726 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 727 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 728 if (err) { 729 printf("%s: abort rx pipe failed: %s\n", 730 device_xname(sc->sc_dev), usbd_errstr(err)); 731 } 732 } 733 734 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 735 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 736 if (err) { 737 printf("%s: abort tx pipe failed: %s\n", 738 device_xname(sc->sc_dev), usbd_errstr(err)); 739 } 740 } 741 742 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 743 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 744 if (err) { 745 printf("%s: abort intr pipe failed: %s\n", 746 device_xname(sc->sc_dev), usbd_errstr(err)); 747 } 748 } 749 750 smsc_rx_list_free(sc); 751 752 smsc_tx_list_free(sc); 753 754 /* Close pipes */ 755 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 756 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 757 if (err) { 758 printf("%s: close rx pipe failed: %s\n", 759 device_xname(sc->sc_dev), usbd_errstr(err)); 760 } 761 sc->sc_ep[SMSC_ENDPT_RX] = NULL; 762 } 763 764 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 765 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 766 if (err) { 767 printf("%s: close tx pipe failed: %s\n", 768 device_xname(sc->sc_dev), usbd_errstr(err)); 769 } 770 sc->sc_ep[SMSC_ENDPT_TX] = NULL; 771 } 772 773 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 774 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 775 if (err) { 776 printf("%s: close intr pipe failed: %s\n", 777 device_xname(sc->sc_dev), usbd_errstr(err)); 778 } 779 sc->sc_ep[SMSC_ENDPT_INTR] = NULL; 780 } 781 782 ifp->if_timer = 0; 783 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 784 785 if (disable) { 786 /* drain */ 787 } 788 } 789 790 int 791 smsc_chip_init(struct smsc_softc *sc) 792 { 793 int err; 794 uint32_t reg_val; 795 int burst_cap; 796 797 /* Enter H/W config mode */ 798 smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 799 800 if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, 801 SMSC_HW_CFG_LRST)) != 0) { 802 smsc_warn_printf(sc, "timed-out waiting for reset to " 803 "complete\n"); 804 goto init_failed; 805 } 806 807 /* Reset the PHY */ 808 smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 809 810 if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, 811 SMSC_PM_CTRL_PHY_RST)) != 0) { 812 smsc_warn_printf(sc, "timed-out waiting for phy reset to " 813 "complete\n"); 814 goto init_failed; 815 } 816 usbd_delay_ms(sc->sc_udev, 40); 817 818 /* Set the mac address */ 819 struct ifnet * const ifp = &sc->sc_ec.ec_if; 820 const char *eaddr = CLLADDR(ifp->if_sadl); 821 if ((err = smsc_setmacaddress(sc, eaddr)) != 0) { 822 smsc_warn_printf(sc, "failed to set the MAC address\n"); 823 goto init_failed; 824 } 825 826 /* 827 * Don't know what the HW_CFG_BIR bit is, but following the reset 828 * sequence as used in the Linux driver. 829 */ 830 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 831 smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 832 goto init_failed; 833 } 834 reg_val |= SMSC_HW_CFG_BIR; 835 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 836 837 /* 838 * There is a so called 'turbo mode' that the linux driver supports, it 839 * seems to allow you to jam multiple frames per Rx transaction. 840 * By default this driver supports that and therefore allows multiple 841 * frames per USB transfer. 842 * 843 * The xfer buffer size needs to reflect this as well, therefore based 844 * on the calculations in the Linux driver the RX bufsize is set to 845 * 18944, 846 * bufsz = (16 * 1024 + 5 * 512) 847 * 848 * Burst capability is the number of URBs that can be in a burst of 849 * data/ethernet frames. 850 */ 851 852 if (sc->sc_udev->ud_speed == USB_SPEED_HIGH) 853 burst_cap = 37; 854 else 855 burst_cap = 128; 856 857 smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 858 859 /* Set the default bulk in delay (magic value from Linux driver) */ 860 smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 861 862 /* 863 * Initialise the RX interface 864 */ 865 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 866 smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", 867 err); 868 goto init_failed; 869 } 870 871 /* 872 * The following settings are used for 'turbo mode', a.k.a multiple 873 * frames per Rx transaction (again info taken form Linux driver). 874 */ 875 reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 876 877 /* 878 * set Rx data offset to ETHER_ALIGN which will make the IP header 879 * align on a word boundary. 880 */ 881 reg_val |= ETHER_ALIGN << SMSC_HW_CFG_RXDOFF_SHIFT; 882 883 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 884 885 /* Clear the status register ? */ 886 smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 887 888 /* Read and display the revision register */ 889 if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 890 smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 891 goto init_failed; 892 } 893 894 /* GPIO/LED setup */ 895 reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 896 SMSC_LED_GPIO_CFG_FDX_LED; 897 smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 898 899 /* 900 * Initialise the TX interface 901 */ 902 smsc_write_reg(sc, SMSC_FLOW, 0); 903 904 smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 905 906 /* Read the current MAC configuration */ 907 if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 908 smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 909 goto init_failed; 910 } 911 912 /* disable pad stripping, collides with checksum offload */ 913 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PADSTR; 914 915 /* Vlan */ 916 smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 917 918 /* 919 * Start TX 920 */ 921 sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 922 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 923 smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 924 925 /* 926 * Start RX 927 */ 928 sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 929 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 930 931 return 0; 932 933 init_failed: 934 smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 935 return err; 936 } 937 938 static int 939 smsc_ifflags_cb(struct ethercom *ec) 940 { 941 struct ifnet *ifp = &ec->ec_if; 942 struct smsc_softc *sc = ifp->if_softc; 943 int rc = 0; 944 945 mutex_enter(&sc->sc_lock); 946 947 int change = ifp->if_flags ^ sc->sc_if_flags; 948 sc->sc_if_flags = ifp->if_flags; 949 950 if ((change & ~(IFF_CANTCHANGE | IFF_DEBUG)) != 0) { 951 rc = ENETRESET; 952 goto out; 953 } 954 955 if ((change & IFF_PROMISC) != 0) { 956 if (ifp->if_flags & IFF_PROMISC) { 957 sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 958 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 959 } else if (!(ifp->if_flags & IFF_PROMISC)) { 960 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 961 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 962 } 963 smsc_setmulti(sc); 964 } 965 966 out: 967 mutex_exit(&sc->sc_lock); 968 969 return rc; 970 } 971 972 973 int 974 smsc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 975 { 976 struct smsc_softc *sc = ifp->if_softc; 977 // struct ifreq /*const*/ *ifr = data; 978 int s, error = 0; 979 980 if (sc->sc_dying) 981 return EIO; 982 983 s = splnet(); 984 error = ether_ioctl(ifp, cmd, data); 985 splx(s); 986 987 if (error == ENETRESET) { 988 error = 0; 989 if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI) 990 ; 991 else if (ifp->if_flags & IFF_RUNNING) { 992 mutex_enter(&sc->sc_lock); 993 smsc_setmulti(sc); 994 mutex_exit(&sc->sc_lock); 995 } 996 } 997 return error; 998 } 999 1000 int 1001 smsc_match(device_t parent, cfdata_t match, void *aux) 1002 { 1003 struct usb_attach_arg *uaa = aux; 1004 1005 return (usb_lookup(smsc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 1006 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 1007 } 1008 1009 void 1010 smsc_attach(device_t parent, device_t self, void *aux) 1011 { 1012 struct smsc_softc *sc = device_private(self); 1013 struct usb_attach_arg *uaa = aux; 1014 struct usbd_device *dev = uaa->uaa_device; 1015 usb_interface_descriptor_t *id; 1016 usb_endpoint_descriptor_t *ed; 1017 char *devinfop; 1018 struct mii_data *mii; 1019 struct ifnet *ifp; 1020 int err, i; 1021 uint32_t mac_h, mac_l; 1022 1023 sc->sc_dev = self; 1024 sc->sc_udev = dev; 1025 sc->sc_stopping = false; 1026 1027 aprint_naive("\n"); 1028 aprint_normal("\n"); 1029 1030 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 1031 aprint_normal_dev(self, "%s\n", devinfop); 1032 usbd_devinfo_free(devinfop); 1033 1034 err = usbd_set_config_no(dev, SMSC_CONFIG_INDEX, 1); 1035 if (err) { 1036 aprint_error_dev(self, "failed to set configuration" 1037 ", err=%s\n", usbd_errstr(err)); 1038 return; 1039 } 1040 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1041 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, 0); 1042 usb_init_task(&sc->sc_stop_task, (void (*)(void *))smsc_stop, sc, 0); 1043 1044 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 1045 mutex_init(&sc->sc_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1046 mutex_init(&sc->sc_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1047 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 1048 1049 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1050 if (err) { 1051 aprint_error_dev(self, "getting interface handle failed\n"); 1052 return; 1053 } 1054 1055 id = usbd_get_interface_descriptor(sc->sc_iface); 1056 1057 if (sc->sc_udev->ud_speed >= USB_SPEED_HIGH) 1058 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1059 else 1060 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1061 1062 /* Find endpoints. */ 1063 for (i = 0; i < id->bNumEndpoints; i++) { 1064 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1065 if (!ed) { 1066 aprint_error_dev(self, "couldn't get ep %d\n", i); 1067 return; 1068 } 1069 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1070 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1071 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1072 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1073 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1074 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1075 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1076 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1077 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1078 } 1079 } 1080 1081 ifp = &sc->sc_ec.ec_if; 1082 ifp->if_softc = sc; 1083 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 1084 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1085 ifp->if_init = smsc_init; 1086 ifp->if_ioctl = smsc_ioctl; 1087 ifp->if_start = smsc_start; 1088 ifp->if_stop = smsc_stop; 1089 1090 #ifdef notyet 1091 /* 1092 * We can do TCPv4, and UDPv4 checksums in hardware. 1093 */ 1094 ifp->if_capabilities |= 1095 /*IFCAP_CSUM_TCPv4_Tx |*/ IFCAP_CSUM_TCPv4_Rx | 1096 /*IFCAP_CSUM_UDPv4_Tx |*/ IFCAP_CSUM_UDPv4_Rx; 1097 #endif 1098 1099 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 1100 1101 /* Setup some of the basics */ 1102 sc->sc_phyno = 1; 1103 1104 /* 1105 * Attempt to get the mac address, if an EEPROM is not attached this 1106 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1107 * address based on urandom. 1108 */ 1109 memset(sc->sc_enaddr, 0xff, ETHER_ADDR_LEN); 1110 1111 prop_dictionary_t dict = device_properties(self); 1112 prop_data_t eaprop = prop_dictionary_get(dict, "mac-address"); 1113 1114 if (eaprop != NULL) { 1115 KASSERT(prop_object_type(eaprop) == PROP_TYPE_DATA); 1116 KASSERT(prop_data_size(eaprop) == ETHER_ADDR_LEN); 1117 memcpy(sc->sc_enaddr, prop_data_data_nocopy(eaprop), 1118 ETHER_ADDR_LEN); 1119 } else 1120 /* Check if there is already a MAC address in the register */ 1121 if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1122 (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1123 sc->sc_enaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1124 sc->sc_enaddr[4] = (uint8_t)((mac_h) & 0xff); 1125 sc->sc_enaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1126 sc->sc_enaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1127 sc->sc_enaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1128 sc->sc_enaddr[0] = (uint8_t)((mac_l) & 0xff); 1129 } 1130 1131 aprint_normal_dev(self, "Ethernet address %s\n", ether_sprintf(sc->sc_enaddr)); 1132 1133 IFQ_SET_READY(&ifp->if_snd); 1134 1135 /* Initialize MII/media info. */ 1136 mii = &sc->sc_mii; 1137 mii->mii_ifp = ifp; 1138 mii->mii_readreg = smsc_miibus_readreg; 1139 mii->mii_writereg = smsc_miibus_writereg; 1140 mii->mii_statchg = smsc_miibus_statchg; 1141 mii->mii_flags = MIIF_AUTOTSLEEP; 1142 sc->sc_ec.ec_mii = mii; 1143 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1144 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1145 1146 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1147 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1148 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1149 } else 1150 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1151 1152 if_attach(ifp); 1153 ether_ifattach(ifp, sc->sc_enaddr); 1154 ether_set_ifflags_cb(&sc->sc_ec, smsc_ifflags_cb); 1155 1156 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1157 RND_TYPE_NET, RND_FLAG_DEFAULT); 1158 1159 callout_init(&sc->sc_stat_ch, 0); 1160 1161 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1162 } 1163 1164 int 1165 smsc_detach(device_t self, int flags) 1166 { 1167 struct smsc_softc *sc = device_private(self); 1168 struct ifnet *ifp = &sc->sc_ec.ec_if; 1169 int s; 1170 1171 callout_stop(&sc->sc_stat_ch); 1172 1173 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) 1174 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 1175 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) 1176 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 1177 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1178 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 1179 1180 /* 1181 * Remove any pending tasks. They cannot be executing because they run 1182 * in the same thread as detach. 1183 */ 1184 usb_rem_task(sc->sc_udev, &sc->sc_tick_task); 1185 usb_rem_task(sc->sc_udev, &sc->sc_stop_task); 1186 1187 s = splusb(); 1188 1189 if (--sc->sc_refcnt >= 0) { 1190 /* Wait for processes to go away */ 1191 usb_detach_waitold(sc->sc_dev); 1192 } 1193 1194 if (ifp->if_flags & IFF_RUNNING) 1195 smsc_stop(ifp ,1); 1196 1197 rnd_detach_source(&sc->sc_rnd_source); 1198 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1199 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1200 if (ifp->if_softc != NULL) { 1201 ether_ifdetach(ifp); 1202 if_detach(ifp); 1203 } 1204 1205 #ifdef DIAGNOSTIC 1206 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1207 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1208 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1209 printf("%s: detach has active endpoints\n", 1210 device_xname(sc->sc_dev)); 1211 #endif 1212 1213 if (--sc->sc_refcnt >= 0) { 1214 /* Wait for processes to go away. */ 1215 usb_detach_waitold(sc->sc_dev); 1216 } 1217 splx(s); 1218 1219 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1220 1221 mutex_destroy(&sc->sc_mii_lock); 1222 1223 mutex_destroy(&sc->sc_rxlock); 1224 mutex_destroy(&sc->sc_txlock); 1225 mutex_destroy(&sc->sc_lock); 1226 1227 return 0; 1228 } 1229 1230 void 1231 smsc_tick_task(void *xsc) 1232 { 1233 int s; 1234 struct smsc_softc *sc = xsc; 1235 struct ifnet *ifp; 1236 struct mii_data *mii; 1237 1238 if (sc == NULL) 1239 return; 1240 1241 if (sc->sc_dying) 1242 return; 1243 ifp = &sc->sc_ec.ec_if; 1244 mii = &sc->sc_mii; 1245 if (mii == NULL) 1246 return; 1247 1248 s = splnet(); 1249 1250 mii_tick(mii); 1251 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) 1252 smsc_miibus_statchg(ifp); 1253 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 1254 1255 splx(s); 1256 } 1257 1258 int 1259 smsc_activate(device_t self, enum devact act) 1260 { 1261 struct smsc_softc *sc = device_private(self); 1262 1263 switch (act) { 1264 case DVACT_DEACTIVATE: 1265 if_deactivate(&sc->sc_ec.ec_if); 1266 sc->sc_dying = 1; 1267 return 0; 1268 default: 1269 return EOPNOTSUPP; 1270 } 1271 return 0; 1272 } 1273 1274 void 1275 smsc_lock_mii(struct smsc_softc *sc) 1276 { 1277 sc->sc_refcnt++; 1278 mutex_enter(&sc->sc_mii_lock); 1279 } 1280 1281 void 1282 smsc_unlock_mii(struct smsc_softc *sc) 1283 { 1284 mutex_exit(&sc->sc_mii_lock); 1285 if (--sc->sc_refcnt < 0) 1286 usb_detach_wakeupold(sc->sc_dev); 1287 } 1288 1289 void 1290 smsc_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1291 { 1292 struct smsc_chain *c = (struct smsc_chain *)priv; 1293 struct smsc_softc *sc = c->sc_sc; 1294 struct ifnet *ifp = &sc->sc_ec.ec_if; 1295 u_char *buf = c->sc_buf; 1296 uint32_t total_len; 1297 uint32_t rxhdr; 1298 uint16_t pktlen; 1299 struct mbuf *m; 1300 1301 mutex_enter(&sc->sc_rxlock); 1302 1303 if (sc->sc_dying) { 1304 mutex_exit(&sc->sc_rxlock); 1305 return; 1306 } 1307 1308 if (!(ifp->if_flags & IFF_RUNNING)) { 1309 mutex_exit(&sc->sc_rxlock); 1310 return; 1311 } 1312 1313 if (status != USBD_NORMAL_COMPLETION) { 1314 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1315 mutex_exit(&sc->sc_rxlock); 1316 return; 1317 } 1318 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1319 printf("%s: usb errors on rx: %s\n", 1320 device_xname(sc->sc_dev), usbd_errstr(status)); 1321 } 1322 if (status == USBD_STALLED) 1323 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1324 goto done; 1325 } 1326 1327 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1328 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1329 1330 while (total_len != 0) { 1331 if (total_len < sizeof(rxhdr)) { 1332 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1333 total_len, sizeof(rxhdr)); 1334 ifp->if_ierrors++; 1335 goto done; 1336 } 1337 1338 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1339 rxhdr = le32toh(rxhdr); 1340 buf += sizeof(rxhdr); 1341 total_len -= sizeof(rxhdr); 1342 1343 if (rxhdr & SMSC_RX_STAT_COLLISION) 1344 ifp->if_collisions++; 1345 1346 if (rxhdr & (SMSC_RX_STAT_ERROR 1347 | SMSC_RX_STAT_LENGTH_ERROR 1348 | SMSC_RX_STAT_MII_ERROR)) { 1349 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1350 ifp->if_ierrors++; 1351 goto done; 1352 } 1353 1354 pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1355 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1356 "0x%08x\n", total_len, pktlen, rxhdr); 1357 1358 if (pktlen < ETHER_HDR_LEN) { 1359 smsc_dbg_printf(sc, "pktlen %d < ETHER_HDR_LEN %d\n", 1360 pktlen, ETHER_HDR_LEN); 1361 ifp->if_ierrors++; 1362 goto done; 1363 } 1364 1365 pktlen += ETHER_ALIGN; 1366 1367 if (pktlen > MCLBYTES) { 1368 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1369 pktlen, MCLBYTES); 1370 ifp->if_ierrors++; 1371 goto done; 1372 } 1373 1374 if (pktlen > total_len) { 1375 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1376 pktlen, total_len); 1377 ifp->if_ierrors++; 1378 goto done; 1379 } 1380 1381 m = smsc_newbuf(); 1382 if (m == NULL) { 1383 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1384 ifp->if_ierrors++; 1385 goto done; 1386 } 1387 1388 ifp->if_ipackets++; 1389 m->m_pkthdr.rcvif = ifp; 1390 m->m_pkthdr.len = m->m_len = pktlen; 1391 m->m_flags |= M_HASFCS; 1392 m_adj(m, ETHER_ALIGN); 1393 1394 KASSERT(m->m_len < MCLBYTES); 1395 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1396 1397 /* Check if RX TCP/UDP checksumming is being offloaded */ 1398 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1399 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1400 struct ether_header *eh; 1401 1402 eh = mtod(m, struct ether_header *); 1403 1404 /* Remove the extra 2 bytes of the csum */ 1405 m_adj(m, -2); 1406 1407 /* 1408 * The checksum appears to be simplistically calculated 1409 * over the udp/tcp header and data up to the end of the 1410 * eth frame. Which means if the eth frame is padded 1411 * the csum calculation is incorrectly performed over 1412 * the padding bytes as well. Therefore to be safe we 1413 * ignore the H/W csum on frames less than or equal to 1414 * 64 bytes. 1415 * 1416 * Ignore H/W csum for non-IPv4 packets. 1417 */ 1418 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1419 be16toh(eh->ether_type), pktlen); 1420 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1421 pktlen > ETHER_MIN_LEN) { 1422 1423 m->m_pkthdr.csum_flags |= 1424 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1425 1426 /* 1427 * Copy the TCP/UDP checksum from the last 2 1428 * bytes of the transfer and put in the 1429 * csum_data field. 1430 */ 1431 memcpy(&m->m_pkthdr.csum_data, 1432 buf + pktlen - 2, 2); 1433 /* 1434 * The data is copied in network order, but the 1435 * csum algorithm in the kernel expects it to be 1436 * in host network order. 1437 */ 1438 m->m_pkthdr.csum_data = 1439 ntohs(m->m_pkthdr.csum_data); 1440 smsc_dbg_printf(sc, 1441 "RX checksum offloaded (0x%04x)\n", 1442 m->m_pkthdr.csum_data); 1443 } 1444 } 1445 1446 /* round up to next longword */ 1447 pktlen = (pktlen + 3) & ~0x3; 1448 1449 /* total_len does not include the padding */ 1450 if (pktlen > total_len) 1451 pktlen = total_len; 1452 1453 buf += pktlen; 1454 total_len -= pktlen; 1455 1456 mutex_exit(&sc->sc_rxlock); 1457 1458 /* push the packet up */ 1459 bpf_mtap(ifp, m); 1460 ifp->if_input(ifp, m); 1461 1462 mutex_enter(&sc->sc_rxlock); 1463 } 1464 1465 done: 1466 mutex_exit(&sc->sc_rxlock); 1467 1468 /* Setup new transfer. */ 1469 usbd_setup_xfer(xfer, c, c->sc_buf, sc->sc_bufsz, USBD_SHORT_XFER_OK, 1470 USBD_NO_TIMEOUT, smsc_rxeof); 1471 usbd_transfer(xfer); 1472 1473 return; 1474 } 1475 1476 void 1477 smsc_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1478 { 1479 struct smsc_chain *c = priv; 1480 struct smsc_softc *sc = c->sc_sc; 1481 struct ifnet *ifp = &sc->sc_ec.ec_if; 1482 1483 mutex_enter(&sc->sc_txlock); 1484 1485 if (sc->sc_dying) { 1486 mutex_exit(&sc->sc_txlock); 1487 return; 1488 } 1489 1490 if (sc->sc_stopping) { 1491 mutex_exit(&sc->sc_txlock); 1492 return; 1493 } 1494 1495 ifp->if_timer = 0; 1496 ifp->if_flags &= ~IFF_OACTIVE; 1497 1498 if (status != USBD_NORMAL_COMPLETION) { 1499 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1500 mutex_exit(&sc->sc_txlock); 1501 return; 1502 } 1503 ifp->if_oerrors++; 1504 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1505 usbd_errstr(status)); 1506 if (status == USBD_STALLED) 1507 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1508 mutex_exit(&sc->sc_txlock); 1509 return; 1510 } 1511 ifp->if_opackets++; 1512 1513 m_freem(c->sc_mbuf); 1514 c->sc_mbuf = NULL; 1515 1516 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1517 smsc_start_locked(ifp); 1518 1519 mutex_exit(&sc->sc_txlock); 1520 } 1521 1522 int 1523 smsc_tx_list_init(struct smsc_softc *sc) 1524 { 1525 struct smsc_cdata *cd = &sc->sc_cdata; 1526 struct smsc_chain *c; 1527 int i; 1528 1529 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1530 c = &cd->tx_chain[i]; 1531 c->sc_sc = sc; 1532 c->sc_idx = i; 1533 c->sc_mbuf = NULL; 1534 if (c->sc_xfer == NULL) { 1535 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_TX], 1536 sc->sc_bufsz, USBD_FORCE_SHORT_XFER, 0, 1537 &c->sc_xfer); 1538 if (error) 1539 return EIO; 1540 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1541 } 1542 } 1543 1544 return 0; 1545 } 1546 1547 void 1548 smsc_tx_list_free(struct smsc_softc *sc) 1549 { 1550 /* Free TX resources. */ 1551 for (size_t i = 0; i < SMSC_TX_LIST_CNT; i++) { 1552 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 1553 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 1554 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 1555 } 1556 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 1557 usbd_destroy_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 1558 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 1559 } 1560 } 1561 } 1562 1563 int 1564 smsc_rx_list_init(struct smsc_softc *sc) 1565 { 1566 struct smsc_cdata *cd = &sc->sc_cdata; 1567 struct smsc_chain *c; 1568 int i; 1569 1570 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1571 c = &cd->rx_chain[i]; 1572 c->sc_sc = sc; 1573 c->sc_idx = i; 1574 c->sc_mbuf = NULL; 1575 if (c->sc_xfer == NULL) { 1576 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_RX], 1577 sc->sc_bufsz, USBD_SHORT_XFER_OK, 0, &c->sc_xfer); 1578 if (error) 1579 return error; 1580 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1581 } 1582 } 1583 1584 return 0; 1585 } 1586 1587 void 1588 smsc_rx_list_free(struct smsc_softc *sc) 1589 { 1590 /* Free RX resources. */ 1591 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 1592 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 1593 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 1594 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 1595 } 1596 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 1597 usbd_destroy_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 1598 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 1599 } 1600 } 1601 } 1602 1603 struct mbuf * 1604 smsc_newbuf(void) 1605 { 1606 struct mbuf *m; 1607 1608 MGETHDR(m, M_DONTWAIT, MT_DATA); 1609 if (m == NULL) 1610 return NULL; 1611 1612 MCLGET(m, M_DONTWAIT); 1613 if (!(m->m_flags & M_EXT)) { 1614 m_freem(m); 1615 return NULL; 1616 } 1617 1618 return m; 1619 } 1620 1621 int 1622 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1623 { 1624 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1625 struct smsc_chain * const c = &sc->sc_cdata.tx_chain[idx]; 1626 uint32_t txhdr; 1627 uint32_t frm_len = 0; 1628 1629 /* 1630 * Each frame is prefixed with two 32-bit values describing the 1631 * length of the packet and buffer. 1632 */ 1633 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1634 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1635 txhdr = htole32(txhdr); 1636 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1637 1638 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1639 txhdr = htole32(txhdr); 1640 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1641 1642 frm_len += 8; 1643 1644 /* Next copy in the actual packet */ 1645 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1646 frm_len += m->m_pkthdr.len; 1647 1648 c->sc_mbuf = m; 1649 1650 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, frm_len, 1651 USBD_FORCE_SHORT_XFER, 10000, smsc_txeof); 1652 1653 usbd_status err = usbd_transfer(c->sc_xfer); 1654 /* XXXNH get task to stop interface */ 1655 if (err != USBD_IN_PROGRESS) { 1656 smsc_stop(ifp, 0); 1657 return EIO; 1658 } 1659 1660 sc->sc_cdata.tx_cnt++; 1661 1662 return 0; 1663 } 1664
Indexes created Thu Oct 02 01:09:59 GMT 2025