if_smsc.c revision 1.22.2.32
1 /* $NetBSD: if_smsc.c,v 1.22.2.32 2017/02/05 13:40:46 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 (mii == NULL || ifp == NULL || 322 (ifp->if_flags & IFF_RUNNING) == 0) 323 return; 324 325 /* Use the MII status to determine link status */ 326 sc->sc_flags &= ~SMSC_FLAG_LINK; 327 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 328 (IFM_ACTIVE | IFM_AVALID)) { 329 switch (IFM_SUBTYPE(mii->mii_media_active)) { 330 case IFM_10_T: 331 case IFM_100_TX: 332 sc->sc_flags |= SMSC_FLAG_LINK; 333 break; 334 case IFM_1000_T: 335 /* Gigabit ethernet not supported by chipset */ 336 break; 337 default: 338 break; 339 } 340 } 341 342 /* Lost link, do nothing. */ 343 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 344 smsc_dbg_printf(sc, "link flag not set\n"); 345 return; 346 } 347 348 err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg); 349 if (err) { 350 smsc_warn_printf(sc, "failed to read initial AFC_CFG, " 351 "error %d\n", err); 352 return; 353 } 354 355 /* Enable/disable full duplex operation and TX/RX pause */ 356 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 357 smsc_dbg_printf(sc, "full duplex operation\n"); 358 sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN; 359 sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX; 360 361 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 362 flow = 0xffff0002; 363 else 364 flow = 0; 365 366 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 367 afc_cfg |= 0xf; 368 else 369 afc_cfg &= ~0xf; 370 } else { 371 smsc_dbg_printf(sc, "half duplex operation\n"); 372 sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX; 373 sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN; 374 375 flow = 0; 376 afc_cfg |= 0xf; 377 } 378 379 err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 380 err += smsc_write_reg(sc, SMSC_FLOW, flow); 381 err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg); 382 if (err) 383 smsc_warn_printf(sc, "media change failed, error %d\n", err); 384 } 385 386 int 387 smsc_ifmedia_upd(struct ifnet *ifp) 388 { 389 struct smsc_softc * const sc = ifp->if_softc; 390 struct mii_data * const mii = &sc->sc_mii; 391 int err; 392 393 if (mii->mii_instance) { 394 struct mii_softc *miisc; 395 396 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 397 mii_phy_reset(miisc); 398 } 399 err = mii_mediachg(mii); 400 return err; 401 } 402 403 void 404 smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 405 { 406 struct smsc_softc * const sc = ifp->if_softc; 407 struct mii_data * const mii = &sc->sc_mii; 408 409 mii_pollstat(mii); 410 411 ifmr->ifm_active = mii->mii_media_active; 412 ifmr->ifm_status = mii->mii_media_status; 413 } 414 415 static inline uint32_t 416 smsc_hash(uint8_t addr[ETHER_ADDR_LEN]) 417 { 418 return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 419 } 420 421 void 422 smsc_setmulti(struct smsc_softc *sc) 423 { 424 struct ifnet * const ifp = &sc->sc_ec.ec_if; 425 struct ether_multi *enm; 426 struct ether_multistep step; 427 uint32_t hashtbl[2] = { 0, 0 }; 428 uint32_t hash; 429 430 if (sc->sc_dying) 431 return; 432 433 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 434 allmulti: 435 smsc_dbg_printf(sc, "receive all multicast enabled\n"); 436 sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 437 sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 438 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 439 return; 440 } else { 441 sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 442 sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 443 } 444 445 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 446 while (enm != NULL) { 447 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 448 ETHER_ADDR_LEN) != 0) 449 goto allmulti; 450 451 hash = smsc_hash(enm->enm_addrlo); 452 hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 453 ETHER_NEXT_MULTI(step, enm); 454 } 455 456 /* Debug */ 457 if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) { 458 smsc_dbg_printf(sc, "receive select group of macs\n"); 459 } else { 460 smsc_dbg_printf(sc, "receive own packets only\n"); 461 } 462 463 /* Write the hash table and mac control registers */ 464 ifp->if_flags &= ~IFF_ALLMULTI; 465 smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 466 smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 467 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 468 } 469 470 int 471 smsc_sethwcsum(struct smsc_softc *sc) 472 { 473 struct ifnet * const ifp = &sc->sc_ec.ec_if; 474 uint32_t val; 475 int err; 476 477 err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 478 if (err != 0) { 479 smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", 480 err); 481 return err; 482 } 483 484 /* Enable/disable the Rx checksum */ 485 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx)) 486 val |= (SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 487 else 488 val &= ~(SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 489 490 /* Enable/disable the Tx checksum (currently not supported) */ 491 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx)) 492 val |= SMSC_COE_CTRL_TX_EN; 493 else 494 val &= ~SMSC_COE_CTRL_TX_EN; 495 496 sc->sc_coe_ctrl = val; 497 498 err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 499 if (err != 0) { 500 smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", 501 err); 502 return err; 503 } 504 505 return 0; 506 } 507 508 int 509 smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 510 { 511 int err; 512 uint32_t val; 513 514 smsc_dbg_printf(sc, "setting mac address to " 515 "%02x:%02x:%02x:%02x:%02x:%02x\n", 516 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 517 518 val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 519 if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 520 goto done; 521 522 val = (addr[5] << 8) | addr[4]; 523 err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 524 525 done: 526 return err; 527 } 528 529 void 530 smsc_reset(struct smsc_softc *sc) 531 { 532 if (sc->sc_dying) 533 return; 534 535 /* Wait a little while for the chip to get its brains in order. */ 536 DELAY(1000); 537 538 /* Reinitialize controller to achieve full reset. */ 539 smsc_chip_init(sc); 540 } 541 542 int 543 smsc_init(struct ifnet *ifp) 544 { 545 struct smsc_softc * const sc = ifp->if_softc; 546 547 mutex_enter(&sc->sc_lock); 548 int ret = smsc_init_locked(ifp); 549 mutex_exit(&sc->sc_lock); 550 551 return ret; 552 } 553 554 int 555 smsc_init_locked(struct ifnet *ifp) 556 { 557 struct smsc_softc * const sc = ifp->if_softc; 558 usbd_status err; 559 560 if (sc->sc_dying) 561 return EIO; 562 563 /* Cancel pending I/O */ 564 smsc_stop_locked(ifp, 1); 565 566 /* Reset the ethernet interface. */ 567 smsc_reset(sc); 568 569 /* Load the multicast filter. */ 570 smsc_setmulti(sc); 571 572 /* TCP/UDP checksum offload engines. */ 573 smsc_sethwcsum(sc); 574 575 /* Open RX and TX pipes. */ 576 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 577 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_RX]); 578 if (err) { 579 printf("%s: open rx pipe failed: %s\n", 580 device_xname(sc->sc_dev), usbd_errstr(err)); 581 goto fail; 582 } 583 584 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 585 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_TX]); 586 if (err) { 587 printf("%s: open tx pipe failed: %s\n", 588 device_xname(sc->sc_dev), usbd_errstr(err)); 589 goto fail1; 590 } 591 592 /* Init RX ring. */ 593 if (smsc_rx_list_init(sc)) { 594 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 595 goto fail2; 596 } 597 598 /* Init TX ring. */ 599 if (smsc_tx_list_init(sc)) { 600 aprint_error_dev(sc->sc_dev, "tx list init failed\n"); 601 goto fail3; 602 } 603 604 /* Start up the receive pipe. */ 605 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 606 struct smsc_chain *c = &sc->sc_cdata.rx_chain[i]; 607 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, sc->sc_bufsz, 608 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, smsc_rxeof); 609 usbd_transfer(c->sc_xfer); 610 } 611 612 sc->sc_stopping = false; 613 614 /* Indicate we are up and running. */ 615 ifp->if_flags |= IFF_RUNNING; 616 ifp->if_flags &= ~IFF_OACTIVE; 617 618 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 619 620 return 0; 621 622 fail3: 623 smsc_rx_list_free(sc); 624 fail2: 625 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 626 fail1: 627 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 628 fail: 629 return EIO; 630 } 631 632 void 633 smsc_start(struct ifnet *ifp) 634 { 635 struct smsc_softc * const sc = ifp->if_softc; 636 KASSERT(ifp->if_extflags & IFEF_START_MPSAFE); 637 638 mutex_enter(&sc->sc_txlock); 639 if (!sc->sc_stopping) 640 smsc_start_locked(ifp); 641 mutex_exit(&sc->sc_txlock); 642 } 643 644 void 645 smsc_start_locked(struct ifnet *ifp) 646 { 647 struct smsc_softc * const sc = ifp->if_softc; 648 struct mbuf *m_head = NULL; 649 650 KASSERT(mutex_owned(&sc->sc_txlock)); 651 652 /* Don't send anything if there is no link or controller is busy. */ 653 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 654 return; 655 } 656 657 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) 658 return; 659 660 IFQ_POLL(&ifp->if_snd, m_head); 661 if (m_head == NULL) 662 return; 663 664 if (smsc_encap(sc, m_head, 0)) { 665 return; 666 } 667 IFQ_DEQUEUE(&ifp->if_snd, m_head); 668 669 bpf_mtap(ifp, m_head); 670 671 ifp->if_flags |= IFF_OACTIVE; 672 673 /* 674 * Set a timeout in case the chip goes out to lunch. 675 */ 676 ifp->if_timer = 5; 677 } 678 679 void 680 smsc_tick(void *xsc) 681 { 682 struct smsc_softc * const sc = xsc; 683 684 if (sc == NULL) 685 return; 686 687 if (sc->sc_dying) 688 return; 689 690 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 691 } 692 693 void 694 smsc_stop(struct ifnet *ifp, int disable) 695 { 696 struct smsc_softc * const sc = ifp->if_softc; 697 698 mutex_enter(&sc->sc_lock); 699 smsc_stop_locked(ifp, disable); 700 mutex_exit(&sc->sc_lock); 701 } 702 703 void 704 smsc_stop_locked(struct ifnet *ifp, int disable) 705 { 706 struct smsc_softc * const sc = ifp->if_softc; 707 usbd_status err; 708 709 KASSERT(mutex_owned(&sc->sc_lock)); 710 mutex_enter(&sc->sc_rxlock); 711 mutex_enter(&sc->sc_txlock); 712 sc->sc_stopping = true; 713 mutex_exit(&sc->sc_txlock); 714 mutex_exit(&sc->sc_rxlock); 715 716 callout_stop(&sc->sc_stat_ch); 717 718 /* Stop transfers. */ 719 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 720 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 721 if (err) { 722 printf("%s: abort rx pipe failed: %s\n", 723 device_xname(sc->sc_dev), usbd_errstr(err)); 724 } 725 } 726 727 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 728 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 729 if (err) { 730 printf("%s: abort tx pipe failed: %s\n", 731 device_xname(sc->sc_dev), usbd_errstr(err)); 732 } 733 } 734 735 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 736 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 737 if (err) { 738 printf("%s: abort intr pipe failed: %s\n", 739 device_xname(sc->sc_dev), usbd_errstr(err)); 740 } 741 } 742 743 smsc_rx_list_free(sc); 744 745 smsc_tx_list_free(sc); 746 747 /* Close pipes */ 748 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 749 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 750 if (err) { 751 printf("%s: close rx pipe failed: %s\n", 752 device_xname(sc->sc_dev), usbd_errstr(err)); 753 } 754 sc->sc_ep[SMSC_ENDPT_RX] = NULL; 755 } 756 757 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 758 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 759 if (err) { 760 printf("%s: close tx pipe failed: %s\n", 761 device_xname(sc->sc_dev), usbd_errstr(err)); 762 } 763 sc->sc_ep[SMSC_ENDPT_TX] = NULL; 764 } 765 766 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 767 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 768 if (err) { 769 printf("%s: close intr pipe failed: %s\n", 770 device_xname(sc->sc_dev), usbd_errstr(err)); 771 } 772 sc->sc_ep[SMSC_ENDPT_INTR] = NULL; 773 } 774 775 ifp->if_timer = 0; 776 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 777 778 if (disable) { 779 /* drain */ 780 } 781 } 782 783 int 784 smsc_chip_init(struct smsc_softc *sc) 785 { 786 int err; 787 uint32_t reg_val; 788 int burst_cap; 789 790 /* Enter H/W config mode */ 791 smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 792 793 if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, 794 SMSC_HW_CFG_LRST)) != 0) { 795 smsc_warn_printf(sc, "timed-out waiting for reset to " 796 "complete\n"); 797 goto init_failed; 798 } 799 800 /* Reset the PHY */ 801 smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 802 803 if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, 804 SMSC_PM_CTRL_PHY_RST)) != 0) { 805 smsc_warn_printf(sc, "timed-out waiting for phy reset to " 806 "complete\n"); 807 goto init_failed; 808 } 809 usbd_delay_ms(sc->sc_udev, 40); 810 811 /* Set the mac address */ 812 struct ifnet * const ifp = &sc->sc_ec.ec_if; 813 const char *eaddr = CLLADDR(ifp->if_sadl); 814 if ((err = smsc_setmacaddress(sc, eaddr)) != 0) { 815 smsc_warn_printf(sc, "failed to set the MAC address\n"); 816 goto init_failed; 817 } 818 819 /* 820 * Don't know what the HW_CFG_BIR bit is, but following the reset 821 * sequence as used in the Linux driver. 822 */ 823 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 824 smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 825 goto init_failed; 826 } 827 reg_val |= SMSC_HW_CFG_BIR; 828 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 829 830 /* 831 * There is a so called 'turbo mode' that the linux driver supports, it 832 * seems to allow you to jam multiple frames per Rx transaction. 833 * By default this driver supports that and therefore allows multiple 834 * frames per USB transfer. 835 * 836 * The xfer buffer size needs to reflect this as well, therefore based 837 * on the calculations in the Linux driver the RX bufsize is set to 838 * 18944, 839 * bufsz = (16 * 1024 + 5 * 512) 840 * 841 * Burst capability is the number of URBs that can be in a burst of 842 * data/ethernet frames. 843 */ 844 845 if (sc->sc_udev->ud_speed == USB_SPEED_HIGH) 846 burst_cap = 37; 847 else 848 burst_cap = 128; 849 850 smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 851 852 /* Set the default bulk in delay (magic value from Linux driver) */ 853 smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 854 855 /* 856 * Initialise the RX interface 857 */ 858 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 859 smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", 860 err); 861 goto init_failed; 862 } 863 864 /* 865 * The following settings are used for 'turbo mode', a.k.a multiple 866 * frames per Rx transaction (again info taken form Linux driver). 867 */ 868 reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 869 870 /* 871 * set Rx data offset to ETHER_ALIGN which will make the IP header 872 * align on a word boundary. 873 */ 874 reg_val |= ETHER_ALIGN << SMSC_HW_CFG_RXDOFF_SHIFT; 875 876 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 877 878 /* Clear the status register ? */ 879 smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 880 881 /* Read and display the revision register */ 882 if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 883 smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 884 goto init_failed; 885 } 886 887 /* GPIO/LED setup */ 888 reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 889 SMSC_LED_GPIO_CFG_FDX_LED; 890 smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 891 892 /* 893 * Initialise the TX interface 894 */ 895 smsc_write_reg(sc, SMSC_FLOW, 0); 896 897 smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 898 899 /* Read the current MAC configuration */ 900 if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 901 smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 902 goto init_failed; 903 } 904 905 /* disable pad stripping, collides with checksum offload */ 906 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PADSTR; 907 908 /* Vlan */ 909 smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 910 911 /* 912 * Start TX 913 */ 914 sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 915 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 916 smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 917 918 /* 919 * Start RX 920 */ 921 sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 922 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 923 924 return 0; 925 926 init_failed: 927 smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 928 return err; 929 } 930 931 static int 932 smsc_ifflags_cb(struct ethercom *ec) 933 { 934 struct ifnet *ifp = &ec->ec_if; 935 struct smsc_softc *sc = ifp->if_softc; 936 int rc = 0; 937 938 mutex_enter(&sc->sc_lock); 939 940 int change = ifp->if_flags ^ sc->sc_if_flags; 941 sc->sc_if_flags = ifp->if_flags; 942 943 if ((change & ~(IFF_CANTCHANGE | IFF_DEBUG)) != 0) { 944 rc = ENETRESET; 945 goto out; 946 } 947 948 if ((change & IFF_PROMISC) != 0) { 949 if (ifp->if_flags & IFF_PROMISC) { 950 sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 951 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 952 } else if (!(ifp->if_flags & IFF_PROMISC)) { 953 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 954 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 955 } 956 smsc_setmulti(sc); 957 } 958 959 out: 960 mutex_exit(&sc->sc_lock); 961 962 return rc; 963 } 964 965 966 int 967 smsc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 968 { 969 struct smsc_softc *sc = ifp->if_softc; 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 if (ifp->if_flags & IFF_RUNNING) { 983 mutex_enter(&sc->sc_lock); 984 smsc_setmulti(sc); 985 mutex_exit(&sc->sc_lock); 986 } 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 sc->sc_stopping = false; 1018 1019 aprint_naive("\n"); 1020 aprint_normal("\n"); 1021 1022 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 1023 aprint_normal_dev(self, "%s\n", devinfop); 1024 usbd_devinfo_free(devinfop); 1025 1026 err = usbd_set_config_no(dev, SMSC_CONFIG_INDEX, 1); 1027 if (err) { 1028 aprint_error_dev(self, "failed to set configuration" 1029 ", err=%s\n", usbd_errstr(err)); 1030 return; 1031 } 1032 1033 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1034 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1035 if (err) { 1036 aprint_error_dev(self, "getting interface handle failed\n"); 1037 return; 1038 } 1039 1040 id = usbd_get_interface_descriptor(sc->sc_iface); 1041 1042 if (sc->sc_udev->ud_speed >= USB_SPEED_HIGH) 1043 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1044 else 1045 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1046 1047 /* Find endpoints. */ 1048 for (i = 0; i < id->bNumEndpoints; i++) { 1049 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1050 if (!ed) { 1051 aprint_error_dev(self, "couldn't get ep %d\n", i); 1052 return; 1053 } 1054 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1055 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1056 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1057 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1058 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1059 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1060 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1061 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1062 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1063 } 1064 } 1065 1066 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, 0); 1067 1068 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 1069 mutex_init(&sc->sc_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1070 mutex_init(&sc->sc_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1071 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 1072 1073 ifp = &sc->sc_ec.ec_if; 1074 ifp->if_softc = sc; 1075 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 1076 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1077 ifp->if_extflags = IFEF_START_MPSAFE; 1078 ifp->if_init = smsc_init; 1079 ifp->if_ioctl = smsc_ioctl; 1080 ifp->if_start = smsc_start; 1081 ifp->if_stop = smsc_stop; 1082 1083 #ifdef notyet 1084 /* 1085 * We can do TCPv4, and UDPv4 checksums in hardware. 1086 */ 1087 ifp->if_capabilities |= 1088 /*IFCAP_CSUM_TCPv4_Tx |*/ IFCAP_CSUM_TCPv4_Rx | 1089 /*IFCAP_CSUM_UDPv4_Tx |*/ IFCAP_CSUM_UDPv4_Rx; 1090 #endif 1091 1092 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 1093 1094 /* Setup some of the basics */ 1095 sc->sc_phyno = 1; 1096 1097 /* 1098 * Attempt to get the mac address, if an EEPROM is not attached this 1099 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1100 * address based on urandom. 1101 */ 1102 memset(sc->sc_enaddr, 0xff, ETHER_ADDR_LEN); 1103 1104 prop_dictionary_t dict = device_properties(self); 1105 prop_data_t eaprop = prop_dictionary_get(dict, "mac-address"); 1106 1107 if (eaprop != NULL) { 1108 KASSERT(prop_object_type(eaprop) == PROP_TYPE_DATA); 1109 KASSERT(prop_data_size(eaprop) == ETHER_ADDR_LEN); 1110 memcpy(sc->sc_enaddr, prop_data_data_nocopy(eaprop), 1111 ETHER_ADDR_LEN); 1112 } else { 1113 /* Check if there is already a MAC address in the register */ 1114 if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1115 (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1116 sc->sc_enaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1117 sc->sc_enaddr[4] = (uint8_t)((mac_h) & 0xff); 1118 sc->sc_enaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1119 sc->sc_enaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1120 sc->sc_enaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1121 sc->sc_enaddr[0] = (uint8_t)((mac_l) & 0xff); 1122 } 1123 } 1124 1125 aprint_normal_dev(self, "Ethernet address %s\n", 1126 ether_sprintf(sc->sc_enaddr)); 1127 1128 IFQ_SET_READY(&ifp->if_snd); 1129 1130 /* Initialize MII/media info. */ 1131 mii = &sc->sc_mii; 1132 mii->mii_ifp = ifp; 1133 mii->mii_readreg = smsc_miibus_readreg; 1134 mii->mii_writereg = smsc_miibus_writereg; 1135 mii->mii_statchg = smsc_miibus_statchg; 1136 mii->mii_flags = MIIF_AUTOTSLEEP; 1137 sc->sc_ec.ec_mii = mii; 1138 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1139 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1140 1141 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1142 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1143 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1144 } else 1145 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1146 1147 if_initialize(ifp); 1148 sc->sc_ipq = if_percpuq_create(&sc->sc_ec.ec_if); 1149 ether_ifattach(ifp, sc->sc_enaddr); 1150 if_register(ifp); 1151 ether_set_ifflags_cb(&sc->sc_ec, smsc_ifflags_cb); 1152 1153 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1154 RND_TYPE_NET, RND_FLAG_DEFAULT); 1155 1156 callout_init(&sc->sc_stat_ch, 0); 1157 1158 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1159 } 1160 1161 int 1162 smsc_detach(device_t self, int flags) 1163 { 1164 struct smsc_softc *sc = device_private(self); 1165 struct ifnet *ifp = &sc->sc_ec.ec_if; 1166 int s; 1167 1168 callout_stop(&sc->sc_stat_ch); 1169 1170 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) 1171 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 1172 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) 1173 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 1174 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1175 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 1176 1177 /* 1178 * Remove any pending tasks. They cannot be executing because they run 1179 * in the same thread as detach. 1180 */ 1181 usb_rem_task(sc->sc_udev, &sc->sc_tick_task); 1182 1183 s = splusb(); 1184 1185 if (--sc->sc_refcnt >= 0) { 1186 /* Wait for processes to go away */ 1187 usb_detach_waitold(sc->sc_dev); 1188 } 1189 1190 if (ifp->if_flags & IFF_RUNNING) 1191 smsc_stop(ifp ,1); 1192 1193 rnd_detach_source(&sc->sc_rnd_source); 1194 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1195 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1196 if (ifp->if_softc != NULL) { 1197 ether_ifdetach(ifp); 1198 if_detach(ifp); 1199 } 1200 1201 #ifdef DIAGNOSTIC 1202 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1203 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1204 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1205 printf("%s: detach has active endpoints\n", 1206 device_xname(sc->sc_dev)); 1207 #endif 1208 1209 if (--sc->sc_refcnt >= 0) { 1210 /* Wait for processes to go away. */ 1211 usb_detach_waitold(sc->sc_dev); 1212 } 1213 splx(s); 1214 1215 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1216 1217 mutex_destroy(&sc->sc_mii_lock); 1218 1219 mutex_destroy(&sc->sc_rxlock); 1220 mutex_destroy(&sc->sc_txlock); 1221 mutex_destroy(&sc->sc_lock); 1222 1223 return 0; 1224 } 1225 1226 void 1227 smsc_tick_task(void *xsc) 1228 { 1229 struct smsc_softc * const sc = xsc; 1230 1231 if (sc == NULL) 1232 return; 1233 1234 if (sc->sc_dying) 1235 return; 1236 1237 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1238 struct mii_data * const mii = &sc->sc_mii; 1239 if (mii == NULL) 1240 return; 1241 1242 const int s = splnet(); 1243 1244 mii_tick(mii); 1245 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) 1246 smsc_miibus_statchg(ifp); 1247 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 1248 1249 splx(s); 1250 } 1251 1252 int 1253 smsc_activate(device_t self, enum devact act) 1254 { 1255 struct smsc_softc *sc = device_private(self); 1256 1257 switch (act) { 1258 case DVACT_DEACTIVATE: 1259 if_deactivate(&sc->sc_ec.ec_if); 1260 sc->sc_dying = 1; 1261 return 0; 1262 default: 1263 return EOPNOTSUPP; 1264 } 1265 return 0; 1266 } 1267 1268 void 1269 smsc_lock_mii(struct smsc_softc *sc) 1270 { 1271 sc->sc_refcnt++; 1272 mutex_enter(&sc->sc_mii_lock); 1273 } 1274 1275 void 1276 smsc_unlock_mii(struct smsc_softc *sc) 1277 { 1278 mutex_exit(&sc->sc_mii_lock); 1279 if (--sc->sc_refcnt < 0) 1280 usb_detach_wakeupold(sc->sc_dev); 1281 } 1282 1283 void 1284 smsc_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1285 { 1286 struct smsc_chain *c = (struct smsc_chain *)priv; 1287 struct smsc_softc *sc = c->sc_sc; 1288 struct ifnet *ifp = &sc->sc_ec.ec_if; 1289 u_char *buf = c->sc_buf; 1290 uint32_t total_len; 1291 uint32_t rxhdr; 1292 uint16_t pktlen; 1293 struct mbuf *m; 1294 1295 mutex_enter(&sc->sc_rxlock); 1296 1297 if (sc->sc_dying) { 1298 mutex_exit(&sc->sc_rxlock); 1299 return; 1300 } 1301 1302 if (!(ifp->if_flags & IFF_RUNNING)) { 1303 mutex_exit(&sc->sc_rxlock); 1304 return; 1305 } 1306 1307 if (status != USBD_NORMAL_COMPLETION) { 1308 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1309 mutex_exit(&sc->sc_rxlock); 1310 return; 1311 } 1312 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1313 printf("%s: usb errors on rx: %s\n", 1314 device_xname(sc->sc_dev), usbd_errstr(status)); 1315 } 1316 if (status == USBD_STALLED) 1317 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1318 goto done; 1319 } 1320 1321 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1322 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1323 1324 while (total_len != 0) { 1325 if (total_len < sizeof(rxhdr)) { 1326 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1327 total_len, sizeof(rxhdr)); 1328 ifp->if_ierrors++; 1329 goto done; 1330 } 1331 1332 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1333 rxhdr = le32toh(rxhdr); 1334 buf += sizeof(rxhdr); 1335 total_len -= sizeof(rxhdr); 1336 1337 if (rxhdr & SMSC_RX_STAT_COLLISION) 1338 ifp->if_collisions++; 1339 1340 if (rxhdr & (SMSC_RX_STAT_ERROR 1341 | SMSC_RX_STAT_LENGTH_ERROR 1342 | SMSC_RX_STAT_MII_ERROR)) { 1343 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1344 ifp->if_ierrors++; 1345 goto done; 1346 } 1347 1348 pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1349 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1350 "0x%08x\n", total_len, pktlen, rxhdr); 1351 1352 if (pktlen < ETHER_HDR_LEN) { 1353 smsc_dbg_printf(sc, "pktlen %d < ETHER_HDR_LEN %d\n", 1354 pktlen, ETHER_HDR_LEN); 1355 ifp->if_ierrors++; 1356 goto done; 1357 } 1358 1359 pktlen += ETHER_ALIGN; 1360 1361 if (pktlen > MCLBYTES) { 1362 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1363 pktlen, MCLBYTES); 1364 ifp->if_ierrors++; 1365 goto done; 1366 } 1367 1368 if (pktlen > total_len) { 1369 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1370 pktlen, total_len); 1371 ifp->if_ierrors++; 1372 goto done; 1373 } 1374 1375 m = smsc_newbuf(); 1376 if (m == NULL) { 1377 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1378 ifp->if_ierrors++; 1379 goto done; 1380 } 1381 1382 m_set_rcvif(m, ifp); 1383 m->m_pkthdr.len = m->m_len = pktlen; 1384 m->m_flags |= M_HASFCS; 1385 m_adj(m, ETHER_ALIGN); 1386 1387 KASSERT(m->m_len < MCLBYTES); 1388 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1389 1390 /* Check if RX TCP/UDP checksumming is being offloaded */ 1391 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1392 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1393 struct ether_header *eh; 1394 1395 eh = mtod(m, struct ether_header *); 1396 1397 /* Remove the extra 2 bytes of the csum */ 1398 m_adj(m, -2); 1399 1400 /* 1401 * The checksum appears to be simplistically calculated 1402 * over the udp/tcp header and data up to the end of the 1403 * eth frame. Which means if the eth frame is padded 1404 * the csum calculation is incorrectly performed over 1405 * the padding bytes as well. Therefore to be safe we 1406 * ignore the H/W csum on frames less than or equal to 1407 * 64 bytes. 1408 * 1409 * Ignore H/W csum for non-IPv4 packets. 1410 */ 1411 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1412 be16toh(eh->ether_type), pktlen); 1413 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1414 pktlen > ETHER_MIN_LEN) { 1415 1416 m->m_pkthdr.csum_flags |= 1417 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1418 1419 /* 1420 * Copy the TCP/UDP checksum from the last 2 1421 * bytes of the transfer and put in the 1422 * csum_data field. 1423 */ 1424 memcpy(&m->m_pkthdr.csum_data, 1425 buf + pktlen - 2, 2); 1426 /* 1427 * The data is copied in network order, but the 1428 * csum algorithm in the kernel expects it to be 1429 * in host network order. 1430 */ 1431 m->m_pkthdr.csum_data = 1432 ntohs(m->m_pkthdr.csum_data); 1433 smsc_dbg_printf(sc, 1434 "RX checksum offloaded (0x%04x)\n", 1435 m->m_pkthdr.csum_data); 1436 } 1437 } 1438 1439 /* round up to next longword */ 1440 pktlen = (pktlen + 3) & ~0x3; 1441 1442 /* total_len does not include the padding */ 1443 if (pktlen > total_len) 1444 pktlen = total_len; 1445 1446 buf += pktlen; 1447 total_len -= pktlen; 1448 1449 mutex_exit(&sc->sc_rxlock); 1450 1451 /* push the packet up */ 1452 if_percpuq_enqueue(sc->sc_ipq, m); 1453 1454 mutex_enter(&sc->sc_rxlock); 1455 } 1456 1457 done: 1458 mutex_exit(&sc->sc_rxlock); 1459 1460 /* Setup new transfer. */ 1461 usbd_setup_xfer(xfer, c, c->sc_buf, sc->sc_bufsz, USBD_SHORT_XFER_OK, 1462 USBD_NO_TIMEOUT, smsc_rxeof); 1463 usbd_transfer(xfer); 1464 1465 return; 1466 } 1467 1468 void 1469 smsc_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1470 { 1471 struct smsc_chain *c = priv; 1472 struct smsc_softc *sc = c->sc_sc; 1473 struct ifnet *ifp = &sc->sc_ec.ec_if; 1474 1475 mutex_enter(&sc->sc_txlock); 1476 1477 if (sc->sc_dying) { 1478 mutex_exit(&sc->sc_txlock); 1479 return; 1480 } 1481 1482 if (sc->sc_stopping) { 1483 mutex_exit(&sc->sc_txlock); 1484 return; 1485 } 1486 1487 ifp->if_timer = 0; 1488 ifp->if_flags &= ~IFF_OACTIVE; 1489 1490 if (status != USBD_NORMAL_COMPLETION) { 1491 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1492 mutex_exit(&sc->sc_txlock); 1493 return; 1494 } 1495 ifp->if_oerrors++; 1496 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1497 usbd_errstr(status)); 1498 if (status == USBD_STALLED) 1499 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1500 mutex_exit(&sc->sc_txlock); 1501 return; 1502 } 1503 ifp->if_opackets++; 1504 1505 m_freem(c->sc_mbuf); 1506 c->sc_mbuf = NULL; 1507 1508 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1509 smsc_start_locked(ifp); 1510 1511 mutex_exit(&sc->sc_txlock); 1512 } 1513 1514 int 1515 smsc_tx_list_init(struct smsc_softc *sc) 1516 { 1517 struct smsc_cdata *cd = &sc->sc_cdata; 1518 struct smsc_chain *c; 1519 int i; 1520 1521 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1522 c = &cd->tx_chain[i]; 1523 c->sc_sc = sc; 1524 c->sc_idx = i; 1525 c->sc_mbuf = NULL; 1526 if (c->sc_xfer == NULL) { 1527 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_TX], 1528 sc->sc_bufsz, USBD_FORCE_SHORT_XFER, 0, 1529 &c->sc_xfer); 1530 if (error) 1531 return EIO; 1532 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1533 } 1534 } 1535 1536 return 0; 1537 } 1538 1539 void 1540 smsc_tx_list_free(struct smsc_softc *sc) 1541 { 1542 /* Free TX resources. */ 1543 for (size_t i = 0; i < SMSC_TX_LIST_CNT; i++) { 1544 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 1545 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 1546 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 1547 } 1548 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 1549 usbd_destroy_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 1550 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 1551 } 1552 } 1553 } 1554 1555 int 1556 smsc_rx_list_init(struct smsc_softc *sc) 1557 { 1558 struct smsc_cdata *cd = &sc->sc_cdata; 1559 struct smsc_chain *c; 1560 int i; 1561 1562 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1563 c = &cd->rx_chain[i]; 1564 c->sc_sc = sc; 1565 c->sc_idx = i; 1566 c->sc_mbuf = NULL; 1567 if (c->sc_xfer == NULL) { 1568 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_RX], 1569 sc->sc_bufsz, USBD_SHORT_XFER_OK, 0, &c->sc_xfer); 1570 if (error) 1571 return error; 1572 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1573 } 1574 } 1575 1576 return 0; 1577 } 1578 1579 void 1580 smsc_rx_list_free(struct smsc_softc *sc) 1581 { 1582 /* Free RX resources. */ 1583 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 1584 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 1585 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 1586 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 1587 } 1588 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 1589 usbd_destroy_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 1590 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 1591 } 1592 } 1593 } 1594 1595 struct mbuf * 1596 smsc_newbuf(void) 1597 { 1598 struct mbuf *m; 1599 1600 MGETHDR(m, M_DONTWAIT, MT_DATA); 1601 if (m == NULL) 1602 return NULL; 1603 1604 MCLGET(m, M_DONTWAIT); 1605 if (!(m->m_flags & M_EXT)) { 1606 m_freem(m); 1607 return NULL; 1608 } 1609 1610 return m; 1611 } 1612 1613 int 1614 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1615 { 1616 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1617 struct smsc_chain * const c = &sc->sc_cdata.tx_chain[idx]; 1618 uint32_t txhdr; 1619 uint32_t frm_len = 0; 1620 1621 /* 1622 * Each frame is prefixed with two 32-bit values describing the 1623 * length of the packet and buffer. 1624 */ 1625 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1626 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1627 txhdr = htole32(txhdr); 1628 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1629 1630 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1631 txhdr = htole32(txhdr); 1632 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1633 1634 frm_len += 8; 1635 1636 /* Next copy in the actual packet */ 1637 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1638 frm_len += m->m_pkthdr.len; 1639 1640 c->sc_mbuf = m; 1641 1642 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, frm_len, 1643 USBD_FORCE_SHORT_XFER, 10000, smsc_txeof); 1644 1645 usbd_status err = usbd_transfer(c->sc_xfer); 1646 /* XXXNH get task to stop interface */ 1647 if (err != USBD_IN_PROGRESS) { 1648 smsc_stop(ifp, 0); 1649 return EIO; 1650 } 1651 1652 sc->sc_cdata.tx_cnt++; 1653 1654 return 0; 1655 } 1656
Indexes created Thu Oct 02 01:09:59 GMT 2025