if_smsc.c revision 1.22.2.35
1 /* $NetBSD: if_smsc.c,v 1.22.2.35 2017/02/06 10:20:01 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/device.h> 71 #include <sys/kernel.h> 72 #include <sys/mbuf.h> 73 #include <sys/mutex.h> 74 #include <sys/proc.h> 75 #include <sys/rndsource.h> 76 #include <sys/socket.h> 77 #include <sys/sockio.h> 78 #include <sys/systm.h> 79 80 #include <net/if.h> 81 #include <net/if_dl.h> 82 #include <net/if_media.h> 83 #include <net/if_ether.h> 84 85 #include <net/bpf.h> 86 87 #ifdef INET 88 #include <netinet/in.h> 89 #include <netinet/if_inarp.h> 90 #endif 91 92 #include <dev/mii/mii.h> 93 #include <dev/mii/miivar.h> 94 95 #include <dev/usb/usb.h> 96 #include <dev/usb/usbdi.h> 97 #include <dev/usb/usbdi_util.h> 98 #include <dev/usb/usbdivar.h> 99 #include <dev/usb/usbdevs.h> 100 101 #include <dev/usb/if_smscreg.h> 102 #include <dev/usb/if_smscvar.h> 103 104 #include "ioconf.h" 105 106 #ifdef USB_DEBUG 107 int smsc_debug = 0; 108 #endif 109 110 #define ETHER_ALIGN 2 111 /* 112 * Various supported device vendors/products. 113 */ 114 static const struct usb_devno smsc_devs[] = { 115 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN89530 }, 116 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9530 }, 117 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9730 }, 118 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500 }, 119 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A }, 120 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_ALT }, 121 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_HAL }, 122 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_SAL10 }, 123 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_ALT }, 124 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_SAL10 }, 125 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505 }, 126 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A }, 127 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_HAL }, 128 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_SAL10 }, 129 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505_SAL10 }, 130 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14 }, 131 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_ALT }, 132 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_SAL10 } 133 }; 134 135 #ifdef USB_DEBUG 136 #define smsc_dbg_printf(sc, fmt, args...) \ 137 do { \ 138 if (smsc_debug > 0) \ 139 printf("debug: " fmt, ##args); \ 140 } while(0) 141 #else 142 #define smsc_dbg_printf(sc, fmt, args...) 143 #endif 144 145 #define smsc_warn_printf(sc, fmt, args...) \ 146 printf("%s: warning: " fmt, device_xname((sc)->sc_dev), ##args) 147 148 #define smsc_err_printf(sc, fmt, args...) \ 149 printf("%s: error: " fmt, device_xname((sc)->sc_dev), ##args) 150 151 /* Function declarations */ 152 int smsc_chip_init(struct smsc_softc *); 153 void smsc_setmulti(struct smsc_softc *); 154 int smsc_setmacaddress(struct smsc_softc *, const uint8_t *); 155 156 int smsc_match(device_t, cfdata_t, void *); 157 void smsc_attach(device_t, device_t, void *); 158 int smsc_detach(device_t, int); 159 int smsc_activate(device_t, enum devact); 160 161 int smsc_init(struct ifnet *); 162 int smsc_init_locked(struct ifnet *); 163 void smsc_start(struct ifnet *); 164 void smsc_start_locked(struct ifnet *); 165 int smsc_ioctl(struct ifnet *, u_long, void *); 166 void smsc_stop(struct ifnet *, int); 167 void smsc_stop_locked(struct ifnet *, int); 168 169 void smsc_reset(struct smsc_softc *); 170 struct mbuf *smsc_newbuf(void); 171 172 void smsc_tick(void *); 173 void smsc_tick_task(void *); 174 void smsc_miibus_statchg(struct ifnet *); 175 int smsc_miibus_readreg(device_t, int, int); 176 void smsc_miibus_writereg(device_t, int, int, int); 177 int smsc_ifmedia_upd(struct ifnet *); 178 void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 179 void smsc_lock_mii(struct smsc_softc *); 180 void smsc_unlock_mii(struct smsc_softc *); 181 182 int smsc_tx_list_init(struct smsc_softc *); 183 void smsc_tx_list_free(struct smsc_softc *); 184 int smsc_rx_list_init(struct smsc_softc *); 185 void smsc_rx_list_free(struct smsc_softc *); 186 int smsc_encap(struct smsc_softc *, struct mbuf *, int); 187 void smsc_rxeof(struct usbd_xfer *, void *, usbd_status); 188 void smsc_txeof(struct usbd_xfer *, void *, usbd_status); 189 190 int smsc_read_reg(struct smsc_softc *, uint32_t, uint32_t *); 191 int smsc_write_reg(struct smsc_softc *, uint32_t, uint32_t); 192 int smsc_wait_for_bits(struct smsc_softc *, uint32_t, uint32_t); 193 int smsc_sethwcsum(struct smsc_softc *); 194 195 CFATTACH_DECL_NEW(usmsc, sizeof(struct smsc_softc), smsc_match, smsc_attach, 196 smsc_detach, smsc_activate); 197 198 int 199 smsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data) 200 { 201 usb_device_request_t req; 202 uint32_t buf; 203 usbd_status err; 204 205 req.bmRequestType = UT_READ_VENDOR_DEVICE; 206 req.bRequest = SMSC_UR_READ_REG; 207 USETW(req.wValue, 0); 208 USETW(req.wIndex, off); 209 USETW(req.wLength, 4); 210 211 err = usbd_do_request(sc->sc_udev, &req, &buf); 212 if (err != 0) 213 smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off); 214 215 *data = le32toh(buf); 216 217 return err; 218 } 219 220 int 221 smsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data) 222 { 223 usb_device_request_t req; 224 uint32_t buf; 225 usbd_status err; 226 227 buf = htole32(data); 228 229 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 230 req.bRequest = SMSC_UR_WRITE_REG; 231 USETW(req.wValue, 0); 232 USETW(req.wIndex, off); 233 USETW(req.wLength, 4); 234 235 err = usbd_do_request(sc->sc_udev, &req, &buf); 236 if (err != 0) 237 smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off); 238 239 return err; 240 } 241 242 int 243 smsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits) 244 { 245 uint32_t val; 246 int err, i; 247 248 for (i = 0; i < 100; i++) { 249 if ((err = smsc_read_reg(sc, reg, &val)) != 0) 250 return err; 251 if (!(val & bits)) 252 return 0; 253 DELAY(5); 254 } 255 256 return 1; 257 } 258 259 int 260 smsc_miibus_readreg(device_t dev, int phy, int reg) 261 { 262 struct smsc_softc * const sc = device_private(dev); 263 uint32_t addr; 264 uint32_t val = 0; 265 266 smsc_lock_mii(sc); 267 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 268 smsc_warn_printf(sc, "MII is busy\n"); 269 goto done; 270 } 271 272 addr = (phy << 11) | (reg << 6) | SMSC_MII_READ; 273 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 274 275 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 276 smsc_warn_printf(sc, "MII read timeout\n"); 277 278 smsc_read_reg(sc, SMSC_MII_DATA, &val); 279 280 done: 281 smsc_unlock_mii(sc); 282 283 return val & 0xffff; 284 } 285 286 void 287 smsc_miibus_writereg(device_t dev, int phy, int reg, int val) 288 { 289 struct smsc_softc * const sc = device_private(dev); 290 uint32_t addr; 291 292 if (sc->sc_phyno != phy) 293 return; 294 295 smsc_lock_mii(sc); 296 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 297 smsc_warn_printf(sc, "MII is busy\n"); 298 smsc_unlock_mii(sc); 299 return; 300 } 301 302 smsc_write_reg(sc, SMSC_MII_DATA, val); 303 304 addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE; 305 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 306 smsc_unlock_mii(sc); 307 308 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 309 smsc_warn_printf(sc, "MII write timeout\n"); 310 } 311 312 void 313 smsc_miibus_statchg(struct ifnet *ifp) 314 { 315 struct smsc_softc * const sc = ifp->if_softc; 316 struct mii_data * const mii = &sc->sc_mii; 317 int err; 318 uint32_t flow; 319 uint32_t afc_cfg; 320 321 if ((ifp->if_flags & IFF_RUNNING) == 0) 322 return; 323 324 /* Use the MII status to determine link status */ 325 sc->sc_flags &= ~SMSC_FLAG_LINK; 326 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 327 (IFM_ACTIVE | IFM_AVALID)) { 328 switch (IFM_SUBTYPE(mii->mii_media_active)) { 329 case IFM_10_T: 330 case IFM_100_TX: 331 sc->sc_flags |= SMSC_FLAG_LINK; 332 break; 333 case IFM_1000_T: 334 /* Gigabit ethernet not supported by chipset */ 335 break; 336 default: 337 break; 338 } 339 } 340 341 /* Lost link, do nothing. */ 342 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 343 smsc_dbg_printf(sc, "link flag not set\n"); 344 return; 345 } 346 347 err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg); 348 if (err) { 349 smsc_warn_printf(sc, "failed to read initial AFC_CFG, " 350 "error %d\n", err); 351 return; 352 } 353 354 /* Enable/disable full duplex operation and TX/RX pause */ 355 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 356 smsc_dbg_printf(sc, "full duplex operation\n"); 357 sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN; 358 sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX; 359 360 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 361 flow = 0xffff0002; 362 else 363 flow = 0; 364 365 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 366 afc_cfg |= 0xf; 367 else 368 afc_cfg &= ~0xf; 369 } else { 370 smsc_dbg_printf(sc, "half duplex operation\n"); 371 sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX; 372 sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN; 373 374 flow = 0; 375 afc_cfg |= 0xf; 376 } 377 378 err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 379 err += smsc_write_reg(sc, SMSC_FLOW, flow); 380 err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg); 381 if (err) 382 smsc_warn_printf(sc, "media change failed, error %d\n", err); 383 } 384 385 int 386 smsc_ifmedia_upd(struct ifnet *ifp) 387 { 388 struct smsc_softc * const sc = ifp->if_softc; 389 struct mii_data * const mii = &sc->sc_mii; 390 int err; 391 392 if (mii->mii_instance) { 393 struct mii_softc *miisc; 394 395 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 396 mii_phy_reset(miisc); 397 } 398 err = mii_mediachg(mii); 399 return err; 400 } 401 402 void 403 smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 404 { 405 struct smsc_softc * const sc = ifp->if_softc; 406 struct mii_data * const mii = &sc->sc_mii; 407 408 mii_pollstat(mii); 409 410 ifmr->ifm_active = mii->mii_media_active; 411 ifmr->ifm_status = mii->mii_media_status; 412 } 413 414 static inline uint32_t 415 smsc_hash(uint8_t addr[ETHER_ADDR_LEN]) 416 { 417 return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 418 } 419 420 void 421 smsc_setmulti(struct smsc_softc *sc) 422 { 423 struct ifnet * const ifp = &sc->sc_ec.ec_if; 424 struct ether_multi *enm; 425 struct ether_multistep step; 426 uint32_t hashtbl[2] = { 0, 0 }; 427 uint32_t hash; 428 429 if (sc->sc_dying) 430 return; 431 432 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 433 allmulti: 434 smsc_dbg_printf(sc, "receive all multicast enabled\n"); 435 sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 436 sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 437 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 438 return; 439 } else { 440 sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 441 sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 442 } 443 444 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 445 while (enm != NULL) { 446 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 447 ETHER_ADDR_LEN) != 0) 448 goto allmulti; 449 450 hash = smsc_hash(enm->enm_addrlo); 451 hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 452 ETHER_NEXT_MULTI(step, enm); 453 } 454 455 /* Debug */ 456 if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) { 457 smsc_dbg_printf(sc, "receive select group of macs\n"); 458 } else { 459 smsc_dbg_printf(sc, "receive own packets only\n"); 460 } 461 462 /* Write the hash table and mac control registers */ 463 ifp->if_flags &= ~IFF_ALLMULTI; 464 smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 465 smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 466 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 467 } 468 469 int 470 smsc_sethwcsum(struct smsc_softc *sc) 471 { 472 struct ifnet * const ifp = &sc->sc_ec.ec_if; 473 uint32_t val; 474 int err; 475 476 err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 477 if (err != 0) { 478 smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", 479 err); 480 return err; 481 } 482 483 /* Enable/disable the Rx checksum */ 484 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx)) 485 val |= (SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 486 else 487 val &= ~(SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 488 489 /* Enable/disable the Tx checksum (currently not supported) */ 490 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx)) 491 val |= SMSC_COE_CTRL_TX_EN; 492 else 493 val &= ~SMSC_COE_CTRL_TX_EN; 494 495 sc->sc_coe_ctrl = val; 496 497 err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 498 if (err != 0) { 499 smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", 500 err); 501 return err; 502 } 503 504 return 0; 505 } 506 507 int 508 smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 509 { 510 int err; 511 uint32_t val; 512 513 smsc_dbg_printf(sc, "setting mac address to " 514 "%02x:%02x:%02x:%02x:%02x:%02x\n", 515 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 516 517 val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 518 if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 519 goto done; 520 521 val = (addr[5] << 8) | addr[4]; 522 err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 523 524 done: 525 return err; 526 } 527 528 void 529 smsc_reset(struct smsc_softc *sc) 530 { 531 if (sc->sc_dying) 532 return; 533 534 /* Wait a little while for the chip to get its brains in order. */ 535 DELAY(1000); 536 537 /* Reinitialize controller to achieve full reset. */ 538 smsc_chip_init(sc); 539 } 540 541 int 542 smsc_init(struct ifnet *ifp) 543 { 544 struct smsc_softc * const sc = ifp->if_softc; 545 546 mutex_enter(&sc->sc_lock); 547 int ret = smsc_init_locked(ifp); 548 mutex_exit(&sc->sc_lock); 549 550 return ret; 551 } 552 553 int 554 smsc_init_locked(struct ifnet *ifp) 555 { 556 struct smsc_softc * const sc = ifp->if_softc; 557 usbd_status err; 558 559 if (sc->sc_dying) 560 return EIO; 561 562 /* Cancel pending I/O */ 563 smsc_stop_locked(ifp, 1); 564 565 /* Reset the ethernet interface. */ 566 smsc_reset(sc); 567 568 /* Load the multicast filter. */ 569 smsc_setmulti(sc); 570 571 /* TCP/UDP checksum offload engines. */ 572 smsc_sethwcsum(sc); 573 574 /* Open RX and TX pipes. */ 575 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 576 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_RX]); 577 if (err) { 578 printf("%s: open rx pipe failed: %s\n", 579 device_xname(sc->sc_dev), usbd_errstr(err)); 580 goto fail; 581 } 582 583 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 584 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_TX]); 585 if (err) { 586 printf("%s: open tx pipe failed: %s\n", 587 device_xname(sc->sc_dev), usbd_errstr(err)); 588 goto fail1; 589 } 590 591 /* Init RX ring. */ 592 if (smsc_rx_list_init(sc)) { 593 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 594 goto fail2; 595 } 596 597 /* Init TX ring. */ 598 if (smsc_tx_list_init(sc)) { 599 aprint_error_dev(sc->sc_dev, "tx list init failed\n"); 600 goto fail3; 601 } 602 603 /* Start up the receive pipe. */ 604 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 605 struct smsc_chain *c = &sc->sc_cdata.rx_chain[i]; 606 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, sc->sc_bufsz, 607 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, smsc_rxeof); 608 usbd_transfer(c->sc_xfer); 609 } 610 611 sc->sc_stopping = false; 612 613 /* Indicate we are up and running. */ 614 ifp->if_flags |= IFF_RUNNING; 615 ifp->if_flags &= ~IFF_OACTIVE; 616 617 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 618 619 return 0; 620 621 fail3: 622 smsc_rx_list_free(sc); 623 fail2: 624 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 625 fail1: 626 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 627 fail: 628 return EIO; 629 } 630 631 void 632 smsc_start(struct ifnet *ifp) 633 { 634 struct smsc_softc * const sc = ifp->if_softc; 635 KASSERT(ifp->if_extflags & IFEF_START_MPSAFE); 636 637 mutex_enter(&sc->sc_txlock); 638 if (!sc->sc_stopping) 639 smsc_start_locked(ifp); 640 mutex_exit(&sc->sc_txlock); 641 } 642 643 void 644 smsc_start_locked(struct ifnet *ifp) 645 { 646 struct smsc_softc * const sc = ifp->if_softc; 647 struct mbuf *m_head = NULL; 648 649 KASSERT(mutex_owned(&sc->sc_txlock)); 650 651 /* Don't send anything if there is no link or controller is busy. */ 652 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 653 return; 654 } 655 656 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) 657 return; 658 659 IFQ_POLL(&ifp->if_snd, m_head); 660 if (m_head == NULL) 661 return; 662 663 if (smsc_encap(sc, m_head, 0)) { 664 return; 665 } 666 IFQ_DEQUEUE(&ifp->if_snd, m_head); 667 668 bpf_mtap(ifp, m_head); 669 670 ifp->if_flags |= IFF_OACTIVE; 671 672 /* 673 * Set a timeout in case the chip goes out to lunch. 674 */ 675 ifp->if_timer = 5; 676 } 677 678 void 679 smsc_tick(void *xsc) 680 { 681 struct smsc_softc * const sc = xsc; 682 683 if (sc == NULL) 684 return; 685 686 if (sc->sc_dying) 687 return; 688 689 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 690 } 691 692 void 693 smsc_stop(struct ifnet *ifp, int disable) 694 { 695 struct smsc_softc * const sc = ifp->if_softc; 696 697 mutex_enter(&sc->sc_lock); 698 smsc_stop_locked(ifp, disable); 699 mutex_exit(&sc->sc_lock); 700 } 701 702 void 703 smsc_stop_locked(struct ifnet *ifp, int disable) 704 { 705 struct smsc_softc * const sc = ifp->if_softc; 706 usbd_status err; 707 708 KASSERT(mutex_owned(&sc->sc_lock)); 709 mutex_enter(&sc->sc_rxlock); 710 mutex_enter(&sc->sc_txlock); 711 sc->sc_stopping = true; 712 mutex_exit(&sc->sc_txlock); 713 mutex_exit(&sc->sc_rxlock); 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 int s, error = 0; 970 971 if (sc->sc_dying) 972 return EIO; 973 974 s = splnet(); 975 error = ether_ioctl(ifp, cmd, data); 976 splx(s); 977 978 if (error == ENETRESET) { 979 error = 0; 980 if (cmd == SIOCADDMULTI || cmd == SIOCDELMULTI) { 981 if (ifp->if_flags & IFF_RUNNING) { 982 mutex_enter(&sc->sc_lock); 983 smsc_setmulti(sc); 984 mutex_exit(&sc->sc_lock); 985 } 986 } 987 } 988 return error; 989 } 990 991 int 992 smsc_match(device_t parent, cfdata_t match, void *aux) 993 { 994 struct usb_attach_arg *uaa = aux; 995 996 return (usb_lookup(smsc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 997 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 998 } 999 1000 void 1001 smsc_attach(device_t parent, device_t self, void *aux) 1002 { 1003 struct smsc_softc *sc = device_private(self); 1004 struct usb_attach_arg *uaa = aux; 1005 struct usbd_device *dev = uaa->uaa_device; 1006 usb_interface_descriptor_t *id; 1007 usb_endpoint_descriptor_t *ed; 1008 char *devinfop; 1009 struct mii_data *mii; 1010 struct ifnet *ifp; 1011 int err, i; 1012 uint32_t mac_h, mac_l; 1013 1014 sc->sc_dev = self; 1015 sc->sc_udev = dev; 1016 sc->sc_stopping = false; 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 1032 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1033 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1034 if (err) { 1035 aprint_error_dev(self, "getting interface handle failed\n"); 1036 return; 1037 } 1038 1039 id = usbd_get_interface_descriptor(sc->sc_iface); 1040 1041 if (sc->sc_udev->ud_speed >= USB_SPEED_HIGH) 1042 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1043 else 1044 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1045 1046 /* Find endpoints. */ 1047 for (i = 0; i < id->bNumEndpoints; i++) { 1048 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1049 if (!ed) { 1050 aprint_error_dev(self, "couldn't get ep %d\n", i); 1051 return; 1052 } 1053 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1054 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1055 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1056 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1057 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1058 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1059 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1060 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1061 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1062 } 1063 } 1064 1065 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, 0); 1066 1067 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 1068 mutex_init(&sc->sc_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1069 mutex_init(&sc->sc_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1070 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 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 1124 aprint_normal_dev(self, "Ethernet address %s\n", 1125 ether_sprintf(sc->sc_enaddr)); 1126 1127 IFQ_SET_READY(&ifp->if_snd); 1128 1129 /* Initialize MII/media info. */ 1130 mii = &sc->sc_mii; 1131 mii->mii_ifp = ifp; 1132 mii->mii_readreg = smsc_miibus_readreg; 1133 mii->mii_writereg = smsc_miibus_writereg; 1134 mii->mii_statchg = smsc_miibus_statchg; 1135 mii->mii_flags = MIIF_AUTOTSLEEP; 1136 sc->sc_ec.ec_mii = mii; 1137 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1138 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1139 1140 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1141 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1142 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1143 } else 1144 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1145 1146 if_initialize(ifp); 1147 sc->sc_ipq = if_percpuq_create(&sc->sc_ec.ec_if); 1148 ether_ifattach(ifp, sc->sc_enaddr); 1149 if_register(ifp); 1150 ether_set_ifflags_cb(&sc->sc_ec, smsc_ifflags_cb); 1151 1152 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1153 RND_TYPE_NET, RND_FLAG_DEFAULT); 1154 1155 callout_init(&sc->sc_stat_ch, 0); 1156 1157 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1158 } 1159 1160 int 1161 smsc_detach(device_t self, int flags) 1162 { 1163 struct smsc_softc *sc = device_private(self); 1164 struct ifnet *ifp = &sc->sc_ec.ec_if; 1165 int s; 1166 1167 callout_stop(&sc->sc_stat_ch); 1168 1169 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) 1170 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 1171 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) 1172 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 1173 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1174 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 1175 1176 /* 1177 * Remove any pending tasks. They cannot be executing because they run 1178 * in the same thread as detach. 1179 */ 1180 usb_rem_task(sc->sc_udev, &sc->sc_tick_task); 1181 1182 s = splusb(); 1183 1184 if (--sc->sc_refcnt >= 0) { 1185 /* Wait for processes to go away */ 1186 usb_detach_waitold(sc->sc_dev); 1187 } 1188 1189 if (ifp->if_flags & IFF_RUNNING) 1190 smsc_stop(ifp ,1); 1191 1192 rnd_detach_source(&sc->sc_rnd_source); 1193 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1194 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1195 if (ifp->if_softc != NULL) { 1196 ether_ifdetach(ifp); 1197 if_detach(ifp); 1198 } 1199 1200 #ifdef DIAGNOSTIC 1201 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1202 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1203 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1204 printf("%s: detach has active endpoints\n", 1205 device_xname(sc->sc_dev)); 1206 #endif 1207 1208 if (--sc->sc_refcnt >= 0) { 1209 /* Wait for processes to go away. */ 1210 usb_detach_waitold(sc->sc_dev); 1211 } 1212 splx(s); 1213 1214 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1215 1216 mutex_destroy(&sc->sc_mii_lock); 1217 1218 mutex_destroy(&sc->sc_rxlock); 1219 mutex_destroy(&sc->sc_txlock); 1220 mutex_destroy(&sc->sc_lock); 1221 1222 return 0; 1223 } 1224 1225 void 1226 smsc_tick_task(void *xsc) 1227 { 1228 struct smsc_softc * const sc = xsc; 1229 1230 if (sc == NULL) 1231 return; 1232 1233 if (sc->sc_dying) 1234 return; 1235 1236 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1237 struct mii_data * const mii = &sc->sc_mii; 1238 const int 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 * const c = (struct smsc_chain *)priv; 1283 struct smsc_softc * const sc = c->sc_sc; 1284 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1285 u_char *buf = c->sc_buf; 1286 uint32_t total_len; 1287 1288 mutex_enter(&sc->sc_rxlock); 1289 1290 if (sc->sc_dying) { 1291 mutex_exit(&sc->sc_rxlock); 1292 return; 1293 } 1294 1295 if (!(ifp->if_flags & IFF_RUNNING)) { 1296 mutex_exit(&sc->sc_rxlock); 1297 return; 1298 } 1299 1300 if (status != USBD_NORMAL_COMPLETION) { 1301 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1302 mutex_exit(&sc->sc_rxlock); 1303 return; 1304 } 1305 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1306 printf("%s: usb errors on rx: %s\n", 1307 device_xname(sc->sc_dev), usbd_errstr(status)); 1308 } 1309 if (status == USBD_STALLED) 1310 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1311 goto done; 1312 } 1313 1314 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1315 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1316 1317 while (total_len != 0) { 1318 uint32_t rxhdr; 1319 if (total_len < sizeof(rxhdr)) { 1320 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1321 total_len, sizeof(rxhdr)); 1322 ifp->if_ierrors++; 1323 goto done; 1324 } 1325 1326 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1327 rxhdr = le32toh(rxhdr); 1328 buf += sizeof(rxhdr); 1329 total_len -= sizeof(rxhdr); 1330 1331 if (rxhdr & SMSC_RX_STAT_COLLISION) 1332 ifp->if_collisions++; 1333 1334 if (rxhdr & (SMSC_RX_STAT_ERROR 1335 | SMSC_RX_STAT_LENGTH_ERROR 1336 | SMSC_RX_STAT_MII_ERROR)) { 1337 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1338 ifp->if_ierrors++; 1339 goto done; 1340 } 1341 1342 uint16_t pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1343 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1344 "0x%08x\n", total_len, pktlen, rxhdr); 1345 1346 if (pktlen < ETHER_HDR_LEN) { 1347 smsc_dbg_printf(sc, "pktlen %d < ETHER_HDR_LEN %d\n", 1348 pktlen, ETHER_HDR_LEN); 1349 ifp->if_ierrors++; 1350 goto done; 1351 } 1352 1353 pktlen += ETHER_ALIGN; 1354 1355 if (pktlen > MCLBYTES) { 1356 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1357 pktlen, MCLBYTES); 1358 ifp->if_ierrors++; 1359 goto done; 1360 } 1361 1362 if (pktlen > total_len) { 1363 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1364 pktlen, total_len); 1365 ifp->if_ierrors++; 1366 goto done; 1367 } 1368 1369 struct mbuf *m = smsc_newbuf(); 1370 if (m == NULL) { 1371 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1372 ifp->if_ierrors++; 1373 goto done; 1374 } 1375 1376 m_set_rcvif(m, ifp); 1377 m->m_pkthdr.len = m->m_len = pktlen; 1378 m->m_flags |= M_HASFCS; 1379 m_adj(m, ETHER_ALIGN); 1380 1381 KASSERT(m->m_len < MCLBYTES); 1382 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1383 1384 /* Check if RX TCP/UDP checksumming is being offloaded */ 1385 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1386 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1387 struct ether_header *eh; 1388 1389 eh = mtod(m, struct ether_header *); 1390 1391 /* Remove the extra 2 bytes of the csum */ 1392 m_adj(m, -2); 1393 1394 /* 1395 * The checksum appears to be simplistically calculated 1396 * over the udp/tcp header and data up to the end of the 1397 * eth frame. Which means if the eth frame is padded 1398 * the csum calculation is incorrectly performed over 1399 * the padding bytes as well. Therefore to be safe we 1400 * ignore the H/W csum on frames less than or equal to 1401 * 64 bytes. 1402 * 1403 * Ignore H/W csum for non-IPv4 packets. 1404 */ 1405 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1406 be16toh(eh->ether_type), pktlen); 1407 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1408 pktlen > ETHER_MIN_LEN) { 1409 1410 m->m_pkthdr.csum_flags |= 1411 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1412 1413 /* 1414 * Copy the TCP/UDP checksum from the last 2 1415 * bytes of the transfer and put in the 1416 * csum_data field. 1417 */ 1418 memcpy(&m->m_pkthdr.csum_data, 1419 buf + pktlen - 2, 2); 1420 /* 1421 * The data is copied in network order, but the 1422 * csum algorithm in the kernel expects it to be 1423 * in host network order. 1424 */ 1425 m->m_pkthdr.csum_data = 1426 ntohs(m->m_pkthdr.csum_data); 1427 smsc_dbg_printf(sc, 1428 "RX checksum offloaded (0x%04x)\n", 1429 m->m_pkthdr.csum_data); 1430 } 1431 } 1432 1433 /* round up to next longword */ 1434 pktlen = (pktlen + 3) & ~0x3; 1435 1436 /* total_len does not include the padding */ 1437 if (pktlen > total_len) 1438 pktlen = total_len; 1439 1440 buf += pktlen; 1441 total_len -= pktlen; 1442 1443 mutex_exit(&sc->sc_rxlock); 1444 1445 /* push the packet up */ 1446 if_percpuq_enqueue(sc->sc_ipq, m); 1447 1448 mutex_enter(&sc->sc_rxlock); 1449 } 1450 1451 done: 1452 mutex_exit(&sc->sc_rxlock); 1453 1454 /* Setup new transfer. */ 1455 usbd_setup_xfer(xfer, c, c->sc_buf, sc->sc_bufsz, USBD_SHORT_XFER_OK, 1456 USBD_NO_TIMEOUT, smsc_rxeof); 1457 usbd_transfer(xfer); 1458 1459 return; 1460 } 1461 1462 void 1463 smsc_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1464 { 1465 struct smsc_chain *c = priv; 1466 struct smsc_softc *sc = c->sc_sc; 1467 struct ifnet *ifp = &sc->sc_ec.ec_if; 1468 1469 mutex_enter(&sc->sc_txlock); 1470 1471 if (sc->sc_dying) { 1472 mutex_exit(&sc->sc_txlock); 1473 return; 1474 } 1475 1476 if (sc->sc_stopping) { 1477 mutex_exit(&sc->sc_txlock); 1478 return; 1479 } 1480 1481 ifp->if_timer = 0; 1482 ifp->if_flags &= ~IFF_OACTIVE; 1483 1484 if (status != USBD_NORMAL_COMPLETION) { 1485 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1486 mutex_exit(&sc->sc_txlock); 1487 return; 1488 } 1489 ifp->if_oerrors++; 1490 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1491 usbd_errstr(status)); 1492 if (status == USBD_STALLED) 1493 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1494 mutex_exit(&sc->sc_txlock); 1495 return; 1496 } 1497 ifp->if_opackets++; 1498 1499 m_freem(c->sc_mbuf); 1500 c->sc_mbuf = NULL; 1501 1502 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1503 smsc_start_locked(ifp); 1504 1505 mutex_exit(&sc->sc_txlock); 1506 } 1507 1508 int 1509 smsc_tx_list_init(struct smsc_softc *sc) 1510 { 1511 struct smsc_cdata *cd = &sc->sc_cdata; 1512 struct smsc_chain *c; 1513 int i; 1514 1515 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1516 c = &cd->tx_chain[i]; 1517 c->sc_sc = sc; 1518 c->sc_idx = i; 1519 c->sc_mbuf = NULL; 1520 if (c->sc_xfer == NULL) { 1521 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_TX], 1522 sc->sc_bufsz, USBD_FORCE_SHORT_XFER, 0, 1523 &c->sc_xfer); 1524 if (error) 1525 return EIO; 1526 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1527 } 1528 } 1529 1530 return 0; 1531 } 1532 1533 void 1534 smsc_tx_list_free(struct smsc_softc *sc) 1535 { 1536 /* Free TX resources. */ 1537 for (size_t i = 0; i < SMSC_TX_LIST_CNT; i++) { 1538 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 1539 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 1540 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 1541 } 1542 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 1543 usbd_destroy_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 1544 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 1545 } 1546 } 1547 } 1548 1549 int 1550 smsc_rx_list_init(struct smsc_softc *sc) 1551 { 1552 struct smsc_cdata *cd = &sc->sc_cdata; 1553 struct smsc_chain *c; 1554 int i; 1555 1556 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1557 c = &cd->rx_chain[i]; 1558 c->sc_sc = sc; 1559 c->sc_idx = i; 1560 c->sc_mbuf = NULL; 1561 if (c->sc_xfer == NULL) { 1562 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_RX], 1563 sc->sc_bufsz, USBD_SHORT_XFER_OK, 0, &c->sc_xfer); 1564 if (error) 1565 return error; 1566 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1567 } 1568 } 1569 1570 return 0; 1571 } 1572 1573 void 1574 smsc_rx_list_free(struct smsc_softc *sc) 1575 { 1576 /* Free RX resources. */ 1577 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 1578 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 1579 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 1580 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 1581 } 1582 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 1583 usbd_destroy_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 1584 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 1585 } 1586 } 1587 } 1588 1589 struct mbuf * 1590 smsc_newbuf(void) 1591 { 1592 struct mbuf *m; 1593 1594 MGETHDR(m, M_DONTWAIT, MT_DATA); 1595 if (m == NULL) 1596 return NULL; 1597 1598 MCLGET(m, M_DONTWAIT); 1599 if (!(m->m_flags & M_EXT)) { 1600 m_freem(m); 1601 return NULL; 1602 } 1603 1604 return m; 1605 } 1606 1607 int 1608 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1609 { 1610 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1611 struct smsc_chain * const c = &sc->sc_cdata.tx_chain[idx]; 1612 uint32_t txhdr; 1613 uint32_t frm_len = 0; 1614 1615 /* 1616 * Each frame is prefixed with two 32-bit values describing the 1617 * length of the packet and buffer. 1618 */ 1619 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1620 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1621 txhdr = htole32(txhdr); 1622 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1623 1624 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1625 txhdr = htole32(txhdr); 1626 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1627 1628 frm_len += 8; 1629 1630 /* Next copy in the actual packet */ 1631 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1632 frm_len += m->m_pkthdr.len; 1633 1634 c->sc_mbuf = m; 1635 1636 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, frm_len, 1637 USBD_FORCE_SHORT_XFER, 10000, smsc_txeof); 1638 1639 usbd_status err = usbd_transfer(c->sc_xfer); 1640 /* XXXNH get task to stop interface */ 1641 if (err != USBD_IN_PROGRESS) { 1642 smsc_stop(ifp, 0); 1643 return EIO; 1644 } 1645 1646 sc->sc_cdata.tx_cnt++; 1647 1648 return 0; 1649 } 1650
Indexes created Thu Oct 02 01:09:59 GMT 2025