if_smsc.c revision 1.22.2.15
1 /* $NetBSD: if_smsc.c,v 1.22.2.15 2016/10/09 09:36:09 skrll 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/rndsource.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 } 559 560 561 int 562 smsc_init_locked(struct ifnet *ifp) 563 { 564 struct smsc_softc * const sc = ifp->if_softc; 565 usbd_status err; 566 567 if (sc->sc_dying) 568 return EIO; 569 570 /* Cancel pending I/O */ 571 smsc_stop_locked(ifp, 1); 572 573 /* Reset the ethernet interface. */ 574 smsc_reset(sc); 575 576 /* Load the multicast filter. */ 577 smsc_setmulti(sc); 578 579 /* TCP/UDP checksum offload engines. */ 580 smsc_sethwcsum(sc); 581 582 /* Open RX and TX pipes. */ 583 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 584 USBD_EXCLUSIVE_USE, &sc->sc_ep[SMSC_ENDPT_RX]); 585 if (err) { 586 printf("%s: open rx pipe failed: %s\n", 587 device_xname(sc->sc_dev), usbd_errstr(err)); 588 goto fail; 589 } 590 591 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 592 USBD_EXCLUSIVE_USE, &sc->sc_ep[SMSC_ENDPT_TX]); 593 if (err) { 594 printf("%s: open tx pipe failed: %s\n", 595 device_xname(sc->sc_dev), usbd_errstr(err)); 596 goto fail1; 597 } 598 599 /* Init RX ring. */ 600 if (smsc_rx_list_init(sc)) { 601 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 602 goto fail2; 603 } 604 605 /* Init TX ring. */ 606 if (smsc_tx_list_init(sc)) { 607 aprint_error_dev(sc->sc_dev, "tx list init failed\n"); 608 goto fail3; 609 } 610 611 /* Start up the receive pipe. */ 612 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 613 struct smsc_chain *c = &sc->sc_cdata.rx_chain[i]; 614 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, sc->sc_bufsz, 615 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, smsc_rxeof); 616 usbd_transfer(c->sc_xfer); 617 } 618 619 /* Indicate we are up and running. */ 620 ifp->if_flags |= IFF_RUNNING; 621 ifp->if_flags &= ~IFF_OACTIVE; 622 623 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 624 625 return 0; 626 627 fail3: 628 smsc_tx_list_free(sc); 629 fail2: 630 smsc_rx_list_free(sc); 631 632 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 633 fail1: 634 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 635 fail: 636 return EIO; 637 } 638 639 void 640 smsc_start(struct ifnet *ifp) 641 { 642 struct smsc_softc * const sc = ifp->if_softc; 643 KASSERT(ifp->if_extflags & IFEF_START_MPSAFE); 644 645 mutex_enter(&sc->sc_txlock); 646 smsc_start_locked(ifp); 647 mutex_exit(&sc->sc_txlock); 648 } 649 650 void 651 smsc_start_locked(struct ifnet *ifp) 652 { 653 struct smsc_softc * const sc = ifp->if_softc; 654 struct mbuf *m_head = NULL; 655 656 /* Don't send anything if there is no link or controller is busy. */ 657 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 658 return; 659 } 660 661 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) 662 return; 663 664 IFQ_POLL(&ifp->if_snd, m_head); 665 if (m_head == NULL) 666 return; 667 668 if (smsc_encap(sc, m_head, 0)) { 669 return; 670 } 671 IFQ_DEQUEUE(&ifp->if_snd, m_head); 672 673 bpf_mtap(ifp, m_head); 674 675 ifp->if_flags |= IFF_OACTIVE; 676 677 /* 678 * Set a timeout in case the chip goes out to lunch. 679 */ 680 ifp->if_timer = 5; 681 } 682 683 void 684 smsc_tick(void *xsc) 685 { 686 struct smsc_softc *sc = xsc; 687 688 if (sc == NULL) 689 return; 690 691 if (sc->sc_dying) 692 return; 693 694 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 695 } 696 697 void 698 smsc_stop(struct ifnet *ifp, int disable) 699 { 700 struct smsc_softc * const sc = ifp->if_softc; 701 702 mutex_enter(&sc->sc_lock); 703 smsc_stop_locked(ifp, disable); 704 mutex_exit(&sc->sc_lock); 705 } 706 707 void 708 smsc_stop_locked(struct ifnet *ifp, int disable) 709 { 710 struct smsc_softc * const sc = ifp->if_softc; 711 usbd_status err; 712 713 // smsc_reset(sc); 714 715 callout_stop(&sc->sc_stat_ch); 716 717 /* Stop transfers. */ 718 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 719 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 720 if (err) { 721 printf("%s: abort rx pipe failed: %s\n", 722 device_xname(sc->sc_dev), usbd_errstr(err)); 723 } 724 } 725 726 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 727 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 728 if (err) { 729 printf("%s: abort tx pipe failed: %s\n", 730 device_xname(sc->sc_dev), usbd_errstr(err)); 731 } 732 } 733 734 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 735 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 736 if (err) { 737 printf("%s: abort intr pipe failed: %s\n", 738 device_xname(sc->sc_dev), usbd_errstr(err)); 739 } 740 } 741 742 smsc_rx_list_free(sc); 743 744 smsc_tx_list_free(sc); 745 746 /* Close pipes */ 747 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 748 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 749 if (err) { 750 printf("%s: close rx pipe failed: %s\n", 751 device_xname(sc->sc_dev), usbd_errstr(err)); 752 } 753 sc->sc_ep[SMSC_ENDPT_RX] = NULL; 754 } 755 756 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 757 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 758 if (err) { 759 printf("%s: close tx pipe failed: %s\n", 760 device_xname(sc->sc_dev), usbd_errstr(err)); 761 } 762 sc->sc_ep[SMSC_ENDPT_TX] = NULL; 763 } 764 765 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 766 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 767 if (err) { 768 printf("%s: close intr pipe failed: %s\n", 769 device_xname(sc->sc_dev), usbd_errstr(err)); 770 } 771 sc->sc_ep[SMSC_ENDPT_INTR] = NULL; 772 } 773 774 ifp->if_timer = 0; 775 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 776 777 if (disable) { 778 /* drain */ 779 } 780 } 781 782 int 783 smsc_chip_init(struct smsc_softc *sc) 784 { 785 int err; 786 uint32_t reg_val; 787 int burst_cap; 788 789 /* Enter H/W config mode */ 790 smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 791 792 if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, 793 SMSC_HW_CFG_LRST)) != 0) { 794 smsc_warn_printf(sc, "timed-out waiting for reset to " 795 "complete\n"); 796 goto init_failed; 797 } 798 799 /* Reset the PHY */ 800 smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 801 802 if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, 803 SMSC_PM_CTRL_PHY_RST)) != 0) { 804 smsc_warn_printf(sc, "timed-out waiting for phy reset to " 805 "complete\n"); 806 goto init_failed; 807 } 808 usbd_delay_ms(sc->sc_udev, 40); 809 810 /* Set the mac address */ 811 struct ifnet * const ifp = &sc->sc_ec.ec_if; 812 const char *eaddr = CLLADDR(ifp->if_sadl); 813 if ((err = smsc_setmacaddress(sc, eaddr)) != 0) { 814 smsc_warn_printf(sc, "failed to set the MAC address\n"); 815 goto init_failed; 816 } 817 818 /* 819 * Don't know what the HW_CFG_BIR bit is, but following the reset 820 * sequence as used in the Linux driver. 821 */ 822 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 823 smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 824 goto init_failed; 825 } 826 reg_val |= SMSC_HW_CFG_BIR; 827 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 828 829 /* 830 * There is a so called 'turbo mode' that the linux driver supports, it 831 * seems to allow you to jam multiple frames per Rx transaction. 832 * By default this driver supports that and therefore allows multiple 833 * frames per USB transfer. 834 * 835 * The xfer buffer size needs to reflect this as well, therefore based 836 * on the calculations in the Linux driver the RX bufsize is set to 837 * 18944, 838 * bufsz = (16 * 1024 + 5 * 512) 839 * 840 * Burst capability is the number of URBs that can be in a burst of 841 * data/ethernet frames. 842 */ 843 844 if (sc->sc_udev->ud_speed == USB_SPEED_HIGH) 845 burst_cap = 37; 846 else 847 burst_cap = 128; 848 849 smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 850 851 /* Set the default bulk in delay (magic value from Linux driver) */ 852 smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 853 854 /* 855 * Initialise the RX interface 856 */ 857 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 858 smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", 859 err); 860 goto init_failed; 861 } 862 863 /* 864 * The following settings are used for 'turbo mode', a.k.a multiple 865 * frames per Rx transaction (again info taken form Linux driver). 866 */ 867 reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 868 869 /* 870 * set Rx data offset to ETHER_ALIGN which will make the IP header 871 * align on a word boundary. 872 */ 873 reg_val |= ETHER_ALIGN << SMSC_HW_CFG_RXDOFF_SHIFT; 874 875 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 876 877 /* Clear the status register ? */ 878 smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 879 880 /* Read and display the revision register */ 881 if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 882 smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 883 goto init_failed; 884 } 885 886 /* GPIO/LED setup */ 887 reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 888 SMSC_LED_GPIO_CFG_FDX_LED; 889 smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 890 891 /* 892 * Initialise the TX interface 893 */ 894 smsc_write_reg(sc, SMSC_FLOW, 0); 895 896 smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 897 898 /* Read the current MAC configuration */ 899 if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 900 smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 901 goto init_failed; 902 } 903 904 /* disable pad stripping, collides with checksum offload */ 905 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PADSTR; 906 907 /* Vlan */ 908 smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 909 910 /* 911 * Start TX 912 */ 913 sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 914 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 915 smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 916 917 /* 918 * Start RX 919 */ 920 sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 921 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 922 923 return 0; 924 925 init_failed: 926 smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 927 return err; 928 } 929 930 static int 931 smsc_ifflags_cb(struct ethercom *ec) 932 { 933 struct ifnet *ifp = &ec->ec_if; 934 struct smsc_softc *sc = ifp->if_softc; 935 int rc = 0; 936 937 mutex_enter(&sc->sc_lock); 938 939 int change = ifp->if_flags ^ sc->sc_if_flags; 940 sc->sc_if_flags = ifp->if_flags; 941 942 if ((change & ~(IFF_CANTCHANGE | IFF_DEBUG)) != 0) { 943 rc = ENETRESET; 944 goto out; 945 } 946 947 if ((change & IFF_PROMISC) != 0) { 948 if (ifp->if_flags & IFF_PROMISC) { 949 sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 950 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 951 } else if (!(ifp->if_flags & IFF_PROMISC)) { 952 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 953 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 954 } 955 smsc_setmulti(sc); 956 } 957 958 out: 959 mutex_exit(&sc->sc_lock); 960 961 return rc; 962 } 963 964 965 int 966 smsc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 967 { 968 struct smsc_softc *sc = ifp->if_softc; 969 // struct ifreq /*const*/ *ifr = data; 970 int s, error = 0; 971 972 if (sc->sc_dying) 973 return EIO; 974 975 s = splnet(); 976 error = ether_ioctl(ifp, cmd, data); 977 splx(s); 978 979 if (error == ENETRESET) { 980 error = 0; 981 if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI) 982 ; 983 else if (ifp->if_flags & IFF_RUNNING) { 984 mutex_enter(&sc->sc_lock); 985 smsc_setmulti(sc); 986 mutex_exit(&sc->sc_lock); 987 } 988 } 989 return error; 990 } 991 992 int 993 smsc_match(device_t parent, cfdata_t match, void *aux) 994 { 995 struct usb_attach_arg *uaa = aux; 996 997 return (usb_lookup(smsc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 998 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 999 } 1000 1001 void 1002 smsc_attach(device_t parent, device_t self, void *aux) 1003 { 1004 struct smsc_softc *sc = device_private(self); 1005 struct usb_attach_arg *uaa = aux; 1006 struct usbd_device *dev = uaa->uaa_device; 1007 usb_interface_descriptor_t *id; 1008 usb_endpoint_descriptor_t *ed; 1009 char *devinfop; 1010 struct mii_data *mii; 1011 struct ifnet *ifp; 1012 int err, i; 1013 uint32_t mac_h, mac_l; 1014 1015 sc->sc_dev = self; 1016 sc->sc_udev = dev; 1017 1018 aprint_naive("\n"); 1019 aprint_normal("\n"); 1020 1021 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 1022 aprint_normal_dev(self, "%s\n", devinfop); 1023 usbd_devinfo_free(devinfop); 1024 1025 err = usbd_set_config_no(dev, SMSC_CONFIG_INDEX, 1); 1026 if (err) { 1027 aprint_error_dev(self, "failed to set configuration" 1028 ", err=%s\n", usbd_errstr(err)); 1029 return; 1030 } 1031 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1032 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, 0); 1033 usb_init_task(&sc->sc_stop_task, (void (*)(void *))smsc_stop, sc, 0); 1034 1035 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 1036 mutex_init(&sc->sc_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1037 mutex_init(&sc->sc_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1038 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 1039 1040 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1041 if (err) { 1042 aprint_error_dev(self, "getting interface handle failed\n"); 1043 return; 1044 } 1045 1046 id = usbd_get_interface_descriptor(sc->sc_iface); 1047 1048 if (sc->sc_udev->ud_speed >= USB_SPEED_HIGH) 1049 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1050 else 1051 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1052 1053 /* Find endpoints. */ 1054 for (i = 0; i < id->bNumEndpoints; i++) { 1055 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1056 if (!ed) { 1057 aprint_error_dev(self, "couldn't get ep %d\n", i); 1058 return; 1059 } 1060 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1061 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1062 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1063 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1064 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1065 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1066 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1067 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1068 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1069 } 1070 } 1071 1072 ifp = &sc->sc_ec.ec_if; 1073 ifp->if_softc = sc; 1074 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 1075 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1076 ifp->if_extflags = IFEF_START_MPSAFE; 1077 ifp->if_init = smsc_init; 1078 ifp->if_ioctl = smsc_ioctl; 1079 ifp->if_start = smsc_start; 1080 ifp->if_stop = smsc_stop; 1081 1082 #ifdef notyet 1083 /* 1084 * We can do TCPv4, and UDPv4 checksums in hardware. 1085 */ 1086 ifp->if_capabilities |= 1087 /*IFCAP_CSUM_TCPv4_Tx |*/ IFCAP_CSUM_TCPv4_Rx | 1088 /*IFCAP_CSUM_UDPv4_Tx |*/ IFCAP_CSUM_UDPv4_Rx; 1089 #endif 1090 1091 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 1092 1093 /* Setup some of the basics */ 1094 sc->sc_phyno = 1; 1095 1096 /* 1097 * Attempt to get the mac address, if an EEPROM is not attached this 1098 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1099 * address based on urandom. 1100 */ 1101 memset(sc->sc_enaddr, 0xff, ETHER_ADDR_LEN); 1102 1103 prop_dictionary_t dict = device_properties(self); 1104 prop_data_t eaprop = prop_dictionary_get(dict, "mac-address"); 1105 1106 if (eaprop != NULL) { 1107 KASSERT(prop_object_type(eaprop) == PROP_TYPE_DATA); 1108 KASSERT(prop_data_size(eaprop) == ETHER_ADDR_LEN); 1109 memcpy(sc->sc_enaddr, prop_data_data_nocopy(eaprop), 1110 ETHER_ADDR_LEN); 1111 } else 1112 /* Check if there is already a MAC address in the register */ 1113 if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1114 (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1115 sc->sc_enaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1116 sc->sc_enaddr[4] = (uint8_t)((mac_h) & 0xff); 1117 sc->sc_enaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1118 sc->sc_enaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1119 sc->sc_enaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1120 sc->sc_enaddr[0] = (uint8_t)((mac_l) & 0xff); 1121 } 1122 1123 aprint_normal_dev(self, "Ethernet address %s\n", ether_sprintf(sc->sc_enaddr)); 1124 1125 IFQ_SET_READY(&ifp->if_snd); 1126 1127 /* Initialize MII/media info. */ 1128 mii = &sc->sc_mii; 1129 mii->mii_ifp = ifp; 1130 mii->mii_readreg = smsc_miibus_readreg; 1131 mii->mii_writereg = smsc_miibus_writereg; 1132 mii->mii_statchg = smsc_miibus_statchg; 1133 mii->mii_flags = MIIF_AUTOTSLEEP; 1134 sc->sc_ec.ec_mii = mii; 1135 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1136 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1137 1138 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1139 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1140 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1141 } else 1142 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1143 1144 if_initialize(ifp); 1145 sc->sc_ipq = if_percpuq_create(&sc->sc_ec.ec_if); 1146 ether_ifattach(ifp, sc->sc_enaddr); 1147 if_register(ifp); 1148 ether_set_ifflags_cb(&sc->sc_ec, smsc_ifflags_cb); 1149 1150 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1151 RND_TYPE_NET, RND_FLAG_DEFAULT); 1152 1153 callout_init(&sc->sc_stat_ch, 0); 1154 1155 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1156 } 1157 1158 int 1159 smsc_detach(device_t self, int flags) 1160 { 1161 struct smsc_softc *sc = device_private(self); 1162 struct ifnet *ifp = &sc->sc_ec.ec_if; 1163 int s; 1164 1165 callout_stop(&sc->sc_stat_ch); 1166 1167 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) 1168 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 1169 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) 1170 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 1171 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1172 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 1173 1174 /* 1175 * Remove any pending tasks. They cannot be executing because they run 1176 * in the same thread as detach. 1177 */ 1178 usb_rem_task(sc->sc_udev, &sc->sc_tick_task); 1179 usb_rem_task(sc->sc_udev, &sc->sc_stop_task); 1180 1181 s = splusb(); 1182 1183 if (--sc->sc_refcnt >= 0) { 1184 /* Wait for processes to go away */ 1185 usb_detach_waitold(sc->sc_dev); 1186 } 1187 1188 if (ifp->if_flags & IFF_RUNNING) 1189 smsc_stop(ifp ,1); 1190 1191 rnd_detach_source(&sc->sc_rnd_source); 1192 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1193 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1194 if (ifp->if_softc != NULL) { 1195 ether_ifdetach(ifp); 1196 if_detach(ifp); 1197 } 1198 1199 #ifdef DIAGNOSTIC 1200 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1201 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1202 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1203 printf("%s: detach has active endpoints\n", 1204 device_xname(sc->sc_dev)); 1205 #endif 1206 1207 if (--sc->sc_refcnt >= 0) { 1208 /* Wait for processes to go away. */ 1209 usb_detach_waitold(sc->sc_dev); 1210 } 1211 splx(s); 1212 1213 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1214 1215 mutex_destroy(&sc->sc_mii_lock); 1216 1217 return 0; 1218 } 1219 1220 void 1221 smsc_tick_task(void *xsc) 1222 { 1223 int s; 1224 struct smsc_softc *sc = xsc; 1225 struct ifnet *ifp; 1226 struct mii_data *mii; 1227 1228 if (sc == NULL) 1229 return; 1230 1231 if (sc->sc_dying) 1232 return; 1233 ifp = &sc->sc_ec.ec_if; 1234 mii = &sc->sc_mii; 1235 if (mii == NULL) 1236 return; 1237 1238 s = splnet(); 1239 1240 mii_tick(mii); 1241 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) 1242 smsc_miibus_statchg(ifp); 1243 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 1244 1245 splx(s); 1246 } 1247 1248 int 1249 smsc_activate(device_t self, enum devact act) 1250 { 1251 struct smsc_softc *sc = device_private(self); 1252 1253 switch (act) { 1254 case DVACT_DEACTIVATE: 1255 if_deactivate(&sc->sc_ec.ec_if); 1256 sc->sc_dying = 1; 1257 return 0; 1258 default: 1259 return EOPNOTSUPP; 1260 } 1261 return 0; 1262 } 1263 1264 void 1265 smsc_lock_mii(struct smsc_softc *sc) 1266 { 1267 sc->sc_refcnt++; 1268 mutex_enter(&sc->sc_mii_lock); 1269 } 1270 1271 void 1272 smsc_unlock_mii(struct smsc_softc *sc) 1273 { 1274 mutex_exit(&sc->sc_mii_lock); 1275 if (--sc->sc_refcnt < 0) 1276 usb_detach_wakeupold(sc->sc_dev); 1277 } 1278 1279 void 1280 smsc_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1281 { 1282 struct smsc_chain *c = (struct smsc_chain *)priv; 1283 struct smsc_softc *sc = c->sc_sc; 1284 struct ifnet *ifp = &sc->sc_ec.ec_if; 1285 u_char *buf = c->sc_buf; 1286 uint32_t total_len; 1287 uint32_t rxhdr; 1288 uint16_t pktlen; 1289 struct mbuf *m; 1290 int s; 1291 1292 if (sc->sc_dying) 1293 return; 1294 1295 if (!(ifp->if_flags & IFF_RUNNING)) 1296 return; 1297 1298 if (status != USBD_NORMAL_COMPLETION) { 1299 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 1300 return; 1301 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1302 printf("%s: usb errors on rx: %s\n", 1303 device_xname(sc->sc_dev), usbd_errstr(status)); 1304 } 1305 if (status == USBD_STALLED) 1306 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1307 goto done; 1308 } 1309 1310 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1311 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1312 1313 while (total_len != 0) { 1314 if (total_len < sizeof(rxhdr)) { 1315 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1316 total_len, sizeof(rxhdr)); 1317 ifp->if_ierrors++; 1318 goto done; 1319 } 1320 1321 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1322 rxhdr = le32toh(rxhdr); 1323 buf += sizeof(rxhdr); 1324 total_len -= sizeof(rxhdr); 1325 1326 if (rxhdr & SMSC_RX_STAT_COLLISION) 1327 ifp->if_collisions++; 1328 1329 if (rxhdr & (SMSC_RX_STAT_ERROR 1330 | SMSC_RX_STAT_LENGTH_ERROR 1331 | SMSC_RX_STAT_MII_ERROR)) { 1332 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1333 ifp->if_ierrors++; 1334 goto done; 1335 } 1336 1337 pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1338 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1339 "0x%08x\n", total_len, pktlen, rxhdr); 1340 1341 if (pktlen < ETHER_HDR_LEN) { 1342 smsc_dbg_printf(sc, "pktlen %d < ETHER_HDR_LEN %d\n", 1343 pktlen, ETHER_HDR_LEN); 1344 ifp->if_ierrors++; 1345 goto done; 1346 } 1347 1348 pktlen += ETHER_ALIGN; 1349 1350 if (pktlen > MCLBYTES) { 1351 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1352 pktlen, MCLBYTES); 1353 ifp->if_ierrors++; 1354 goto done; 1355 } 1356 1357 if (pktlen > total_len) { 1358 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1359 pktlen, total_len); 1360 ifp->if_ierrors++; 1361 goto done; 1362 } 1363 1364 m = smsc_newbuf(); 1365 if (m == NULL) { 1366 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1367 ifp->if_ierrors++; 1368 goto done; 1369 } 1370 1371 ifp->if_ipackets++; 1372 m_set_rcvif(m, ifp); 1373 m->m_pkthdr.len = m->m_len = pktlen; 1374 m->m_flags |= M_HASFCS; 1375 m_adj(m, ETHER_ALIGN); 1376 1377 KASSERT(m->m_len < MCLBYTES); 1378 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1379 1380 /* Check if RX TCP/UDP checksumming is being offloaded */ 1381 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1382 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1383 struct ether_header *eh; 1384 1385 eh = mtod(m, struct ether_header *); 1386 1387 /* Remove the extra 2 bytes of the csum */ 1388 m_adj(m, -2); 1389 1390 /* 1391 * The checksum appears to be simplistically calculated 1392 * over the udp/tcp header and data up to the end of the 1393 * eth frame. Which means if the eth frame is padded 1394 * the csum calculation is incorrectly performed over 1395 * the padding bytes as well. Therefore to be safe we 1396 * ignore the H/W csum on frames less than or equal to 1397 * 64 bytes. 1398 * 1399 * Ignore H/W csum for non-IPv4 packets. 1400 */ 1401 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1402 be16toh(eh->ether_type), pktlen); 1403 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1404 pktlen > ETHER_MIN_LEN) { 1405 1406 m->m_pkthdr.csum_flags |= 1407 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1408 1409 /* 1410 * Copy the TCP/UDP checksum from the last 2 1411 * bytes of the transfer and put in the 1412 * csum_data field. 1413 */ 1414 memcpy(&m->m_pkthdr.csum_data, 1415 buf + pktlen - 2, 2); 1416 /* 1417 * The data is copied in network order, but the 1418 * csum algorithm in the kernel expects it to be 1419 * in host network order. 1420 */ 1421 m->m_pkthdr.csum_data = 1422 ntohs(m->m_pkthdr.csum_data); 1423 smsc_dbg_printf(sc, 1424 "RX checksum offloaded (0x%04x)\n", 1425 m->m_pkthdr.csum_data); 1426 } 1427 } 1428 1429 /* round up to next longword */ 1430 pktlen = (pktlen + 3) & ~0x3; 1431 1432 /* total_len does not include the padding */ 1433 if (pktlen > total_len) 1434 pktlen = total_len; 1435 1436 buf += pktlen; 1437 total_len -= pktlen; 1438 1439 /* push the packet up */ 1440 s = splnet(); 1441 bpf_mtap(ifp, m); 1442 if_percpuq_enqueue(sc->sc_ipq, m); 1443 splx(s); 1444 } 1445 1446 done: 1447 /* Setup new transfer. */ 1448 usbd_setup_xfer(xfer, c, c->sc_buf, sc->sc_bufsz, USBD_SHORT_XFER_OK, 1449 USBD_NO_TIMEOUT, smsc_rxeof); 1450 usbd_transfer(xfer); 1451 1452 return; 1453 } 1454 1455 void 1456 smsc_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1457 { 1458 struct smsc_chain *c = priv; 1459 struct smsc_softc *sc = c->sc_sc; 1460 struct ifnet *ifp = &sc->sc_ec.ec_if; 1461 1462 if (sc->sc_dying) 1463 return; 1464 1465 int s = splnet(); 1466 1467 ifp->if_timer = 0; 1468 ifp->if_flags &= ~IFF_OACTIVE; 1469 1470 if (status != USBD_NORMAL_COMPLETION) { 1471 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1472 splx(s); 1473 return; 1474 } 1475 ifp->if_oerrors++; 1476 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1477 usbd_errstr(status)); 1478 if (status == USBD_STALLED) 1479 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1480 splx(s); 1481 return; 1482 } 1483 ifp->if_opackets++; 1484 1485 m_freem(c->sc_mbuf); 1486 c->sc_mbuf = NULL; 1487 1488 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1489 smsc_start(ifp); 1490 1491 splx(s); 1492 } 1493 1494 int 1495 smsc_tx_list_init(struct smsc_softc *sc) 1496 { 1497 struct smsc_cdata *cd = &sc->sc_cdata; 1498 struct smsc_chain *c; 1499 int i; 1500 1501 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1502 c = &cd->tx_chain[i]; 1503 c->sc_sc = sc; 1504 c->sc_idx = i; 1505 c->sc_mbuf = NULL; 1506 if (c->sc_xfer == NULL) { 1507 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_TX], 1508 sc->sc_bufsz, USBD_FORCE_SHORT_XFER, 0, 1509 &c->sc_xfer); 1510 if (error) 1511 return EIO; 1512 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1513 } 1514 } 1515 1516 return 0; 1517 } 1518 1519 void 1520 smsc_tx_list_free(struct smsc_softc *sc) 1521 { 1522 /* Free TX resources. */ 1523 for (size_t i = 0; i < SMSC_TX_LIST_CNT; i++) { 1524 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 1525 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 1526 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 1527 } 1528 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 1529 usbd_destroy_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 1530 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 1531 } 1532 } 1533 } 1534 1535 int 1536 smsc_rx_list_init(struct smsc_softc *sc) 1537 { 1538 struct smsc_cdata *cd = &sc->sc_cdata; 1539 struct smsc_chain *c; 1540 int i; 1541 1542 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1543 c = &cd->rx_chain[i]; 1544 c->sc_sc = sc; 1545 c->sc_idx = i; 1546 c->sc_mbuf = NULL; 1547 if (c->sc_xfer == NULL) { 1548 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_RX], 1549 sc->sc_bufsz, USBD_SHORT_XFER_OK, 0, &c->sc_xfer); 1550 if (error) 1551 return error; 1552 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1553 } 1554 } 1555 1556 return 0; 1557 } 1558 1559 void 1560 smsc_rx_list_free(struct smsc_softc *sc) 1561 { 1562 /* Free RX resources. */ 1563 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 1564 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 1565 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 1566 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 1567 } 1568 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 1569 usbd_destroy_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 1570 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 1571 } 1572 } 1573 } 1574 1575 struct mbuf * 1576 smsc_newbuf(void) 1577 { 1578 struct mbuf *m; 1579 1580 MGETHDR(m, M_DONTWAIT, MT_DATA); 1581 if (m == NULL) 1582 return NULL; 1583 1584 MCLGET(m, M_DONTWAIT); 1585 if (!(m->m_flags & M_EXT)) { 1586 m_freem(m); 1587 return NULL; 1588 } 1589 1590 return m; 1591 } 1592 1593 int 1594 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1595 { 1596 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1597 struct smsc_chain * const c = &sc->sc_cdata.tx_chain[idx]; 1598 uint32_t txhdr; 1599 uint32_t frm_len = 0; 1600 1601 /* 1602 * Each frame is prefixed with two 32-bit values describing the 1603 * length of the packet and buffer. 1604 */ 1605 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1606 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1607 txhdr = htole32(txhdr); 1608 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1609 1610 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1611 txhdr = htole32(txhdr); 1612 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1613 1614 frm_len += 8; 1615 1616 /* Next copy in the actual packet */ 1617 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1618 frm_len += m->m_pkthdr.len; 1619 1620 c->sc_mbuf = m; 1621 1622 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, frm_len, 1623 USBD_FORCE_SHORT_XFER, 10000, smsc_txeof); 1624 1625 usbd_status err = usbd_transfer(c->sc_xfer); 1626 /* XXXNH get task to stop interface */ 1627 if (err != USBD_IN_PROGRESS) { 1628 smsc_stop(ifp, 0); 1629 return EIO; 1630 } 1631 1632 sc->sc_cdata.tx_cnt++; 1633 1634 return 0; 1635 } 1636
Indexes created Thu Oct 02 01:09:59 GMT 2025