if_smsc.c revision 1.22.2.22
1 /* $NetBSD: if_smsc.c,v 1.22.2.22 2017/01/31 16:52:39 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 *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 *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 *sc = ifp->if_softc; 316 struct mii_data *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 *sc = ifp->if_softc; 390 struct mii_data *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 *sc = ifp->if_softc; 407 struct mii_data *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 *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 *ifp = &sc->sc_ec.ec_if; 474 uint32_t val; 475 int err; 476 477 if (!ifp) 478 return EIO; 479 480 err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 481 if (err != 0) { 482 smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", 483 err); 484 return err; 485 } 486 487 /* Enable/disable the Rx checksum */ 488 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx)) 489 val |= (SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 490 else 491 val &= ~(SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 492 493 /* Enable/disable the Tx checksum (currently not supported) */ 494 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx)) 495 val |= SMSC_COE_CTRL_TX_EN; 496 else 497 val &= ~SMSC_COE_CTRL_TX_EN; 498 499 sc->sc_coe_ctrl = val; 500 501 err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 502 if (err != 0) { 503 smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", 504 err); 505 return err; 506 } 507 508 return 0; 509 } 510 511 int 512 smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 513 { 514 int err; 515 uint32_t val; 516 517 smsc_dbg_printf(sc, "setting mac address to " 518 "%02x:%02x:%02x:%02x:%02x:%02x\n", 519 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 520 521 val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 522 if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 523 goto done; 524 525 val = (addr[5] << 8) | addr[4]; 526 err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 527 528 done: 529 return err; 530 } 531 532 void 533 smsc_reset(struct smsc_softc *sc) 534 { 535 if (sc->sc_dying) 536 return; 537 538 /* Wait a little while for the chip to get its brains in order. */ 539 DELAY(1000); 540 541 /* Reinitialize controller to achieve full reset. */ 542 smsc_chip_init(sc); 543 } 544 545 int 546 smsc_init(struct ifnet *ifp) 547 { 548 struct smsc_softc *sc = ifp->if_softc; 549 550 mutex_enter(&sc->sc_lock); 551 int ret = smsc_init_locked(ifp); 552 mutex_exit(&sc->sc_lock); 553 554 return ret; 555 } 556 557 int 558 smsc_init_locked(struct ifnet *ifp) 559 { 560 struct smsc_softc * const sc = ifp->if_softc; 561 usbd_status err; 562 563 if (sc->sc_dying) 564 return EIO; 565 566 /* Cancel pending I/O */ 567 smsc_stop_locked(ifp, 1); 568 569 /* Reset the ethernet interface. */ 570 smsc_reset(sc); 571 572 /* Load the multicast filter. */ 573 smsc_setmulti(sc); 574 575 /* TCP/UDP checksum offload engines. */ 576 smsc_sethwcsum(sc); 577 578 /* Open RX and TX pipes. */ 579 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 580 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_RX]); 581 if (err) { 582 printf("%s: open rx pipe failed: %s\n", 583 device_xname(sc->sc_dev), usbd_errstr(err)); 584 goto fail; 585 } 586 587 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 588 USBD_EXCLUSIVE_USE | USBD_MPSAFE, &sc->sc_ep[SMSC_ENDPT_TX]); 589 if (err) { 590 printf("%s: open tx pipe failed: %s\n", 591 device_xname(sc->sc_dev), usbd_errstr(err)); 592 goto fail1; 593 } 594 595 /* Init RX ring. */ 596 if (smsc_rx_list_init(sc)) { 597 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 598 goto fail2; 599 } 600 601 /* Init TX ring. */ 602 if (smsc_tx_list_init(sc)) { 603 aprint_error_dev(sc->sc_dev, "tx list init failed\n"); 604 goto fail3; 605 } 606 607 /* Start up the receive pipe. */ 608 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 609 struct smsc_chain *c = &sc->sc_cdata.rx_chain[i]; 610 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, sc->sc_bufsz, 611 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, smsc_rxeof); 612 usbd_transfer(c->sc_xfer); 613 } 614 615 sc->sc_stopping = false; 616 617 /* Indicate we are up and running. */ 618 ifp->if_flags |= IFF_RUNNING; 619 ifp->if_flags &= ~IFF_OACTIVE; 620 621 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 622 623 return 0; 624 625 fail3: 626 smsc_rx_list_free(sc); 627 fail2: 628 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 629 fail1: 630 usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 631 fail: 632 return EIO; 633 } 634 635 void 636 smsc_start(struct ifnet *ifp) 637 { 638 struct smsc_softc * const sc = ifp->if_softc; 639 KASSERT(ifp->if_extflags & IFEF_START_MPSAFE); 640 641 mutex_enter(&sc->sc_txlock); 642 if (!sc->sc_stopping) 643 smsc_start_locked(ifp); 644 mutex_exit(&sc->sc_txlock); 645 } 646 647 void 648 smsc_start_locked(struct ifnet *ifp) 649 { 650 struct smsc_softc * const sc = ifp->if_softc; 651 struct mbuf *m_head = NULL; 652 653 KASSERT(mutex_owned(&sc->sc_txlock)); 654 655 /* Don't send anything if there is no link or controller is busy. */ 656 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 657 return; 658 } 659 660 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) 661 return; 662 663 IFQ_POLL(&ifp->if_snd, m_head); 664 if (m_head == NULL) 665 return; 666 667 if (smsc_encap(sc, m_head, 0)) { 668 return; 669 } 670 IFQ_DEQUEUE(&ifp->if_snd, m_head); 671 672 bpf_mtap(ifp, m_head); 673 674 ifp->if_flags |= IFF_OACTIVE; 675 676 /* 677 * Set a timeout in case the chip goes out to lunch. 678 */ 679 ifp->if_timer = 5; 680 } 681 682 void 683 smsc_tick(void *xsc) 684 { 685 struct smsc_softc *sc = xsc; 686 687 if (sc == NULL) 688 return; 689 690 if (sc->sc_dying) 691 return; 692 693 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 694 } 695 696 void 697 smsc_stop(struct ifnet *ifp, int disable) 698 { 699 struct smsc_softc * const sc = ifp->if_softc; 700 701 mutex_enter(&sc->sc_lock); 702 smsc_stop_locked(ifp, disable); 703 mutex_exit(&sc->sc_lock); 704 } 705 706 void 707 smsc_stop_locked(struct ifnet *ifp, int disable) 708 { 709 struct smsc_softc * const sc = ifp->if_softc; 710 usbd_status err; 711 712 KASSERT(mutex_owned(&sc->sc_lock)); 713 mutex_enter(&sc->sc_rxlock); 714 mutex_enter(&sc->sc_txlock); 715 sc->sc_stopping = true; 716 mutex_exit(&sc->sc_txlock); 717 mutex_exit(&sc->sc_rxlock); 718 719 callout_stop(&sc->sc_stat_ch); 720 721 /* Stop transfers. */ 722 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 723 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 724 if (err) { 725 printf("%s: abort rx pipe failed: %s\n", 726 device_xname(sc->sc_dev), usbd_errstr(err)); 727 } 728 } 729 730 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 731 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 732 if (err) { 733 printf("%s: abort tx pipe failed: %s\n", 734 device_xname(sc->sc_dev), usbd_errstr(err)); 735 } 736 } 737 738 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 739 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 740 if (err) { 741 printf("%s: abort intr pipe failed: %s\n", 742 device_xname(sc->sc_dev), usbd_errstr(err)); 743 } 744 } 745 746 smsc_rx_list_free(sc); 747 748 smsc_tx_list_free(sc); 749 750 /* Close pipes */ 751 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 752 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 753 if (err) { 754 printf("%s: close rx pipe failed: %s\n", 755 device_xname(sc->sc_dev), usbd_errstr(err)); 756 } 757 sc->sc_ep[SMSC_ENDPT_RX] = NULL; 758 } 759 760 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 761 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 762 if (err) { 763 printf("%s: close tx pipe failed: %s\n", 764 device_xname(sc->sc_dev), usbd_errstr(err)); 765 } 766 sc->sc_ep[SMSC_ENDPT_TX] = NULL; 767 } 768 769 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 770 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 771 if (err) { 772 printf("%s: close intr pipe failed: %s\n", 773 device_xname(sc->sc_dev), usbd_errstr(err)); 774 } 775 sc->sc_ep[SMSC_ENDPT_INTR] = NULL; 776 } 777 778 ifp->if_timer = 0; 779 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 780 781 if (disable) { 782 /* drain */ 783 } 784 } 785 786 int 787 smsc_chip_init(struct smsc_softc *sc) 788 { 789 int err; 790 uint32_t reg_val; 791 int burst_cap; 792 793 /* Enter H/W config mode */ 794 smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 795 796 if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, 797 SMSC_HW_CFG_LRST)) != 0) { 798 smsc_warn_printf(sc, "timed-out waiting for reset to " 799 "complete\n"); 800 goto init_failed; 801 } 802 803 /* Reset the PHY */ 804 smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 805 806 if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, 807 SMSC_PM_CTRL_PHY_RST)) != 0) { 808 smsc_warn_printf(sc, "timed-out waiting for phy reset to " 809 "complete\n"); 810 goto init_failed; 811 } 812 usbd_delay_ms(sc->sc_udev, 40); 813 814 /* Set the mac address */ 815 struct ifnet * const ifp = &sc->sc_ec.ec_if; 816 const char *eaddr = CLLADDR(ifp->if_sadl); 817 if ((err = smsc_setmacaddress(sc, eaddr)) != 0) { 818 smsc_warn_printf(sc, "failed to set the MAC address\n"); 819 goto init_failed; 820 } 821 822 /* 823 * Don't know what the HW_CFG_BIR bit is, but following the reset 824 * sequence as used in the Linux driver. 825 */ 826 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 827 smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 828 goto init_failed; 829 } 830 reg_val |= SMSC_HW_CFG_BIR; 831 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 832 833 /* 834 * There is a so called 'turbo mode' that the linux driver supports, it 835 * seems to allow you to jam multiple frames per Rx transaction. 836 * By default this driver supports that and therefore allows multiple 837 * frames per USB transfer. 838 * 839 * The xfer buffer size needs to reflect this as well, therefore based 840 * on the calculations in the Linux driver the RX bufsize is set to 841 * 18944, 842 * bufsz = (16 * 1024 + 5 * 512) 843 * 844 * Burst capability is the number of URBs that can be in a burst of 845 * data/ethernet frames. 846 */ 847 848 if (sc->sc_udev->ud_speed == USB_SPEED_HIGH) 849 burst_cap = 37; 850 else 851 burst_cap = 128; 852 853 smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 854 855 /* Set the default bulk in delay (magic value from Linux driver) */ 856 smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 857 858 /* 859 * Initialise the RX interface 860 */ 861 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 862 smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", 863 err); 864 goto init_failed; 865 } 866 867 /* 868 * The following settings are used for 'turbo mode', a.k.a multiple 869 * frames per Rx transaction (again info taken form Linux driver). 870 */ 871 reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 872 873 /* 874 * set Rx data offset to ETHER_ALIGN which will make the IP header 875 * align on a word boundary. 876 */ 877 reg_val |= ETHER_ALIGN << SMSC_HW_CFG_RXDOFF_SHIFT; 878 879 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 880 881 /* Clear the status register ? */ 882 smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 883 884 /* Read and display the revision register */ 885 if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 886 smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 887 goto init_failed; 888 } 889 890 /* GPIO/LED setup */ 891 reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 892 SMSC_LED_GPIO_CFG_FDX_LED; 893 smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 894 895 /* 896 * Initialise the TX interface 897 */ 898 smsc_write_reg(sc, SMSC_FLOW, 0); 899 900 smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 901 902 /* Read the current MAC configuration */ 903 if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 904 smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 905 goto init_failed; 906 } 907 908 /* disable pad stripping, collides with checksum offload */ 909 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PADSTR; 910 911 /* Vlan */ 912 smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 913 914 /* 915 * Start TX 916 */ 917 sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 918 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 919 smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 920 921 /* 922 * Start RX 923 */ 924 sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 925 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 926 927 return 0; 928 929 init_failed: 930 smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 931 return err; 932 } 933 934 static int 935 smsc_ifflags_cb(struct ethercom *ec) 936 { 937 struct ifnet *ifp = &ec->ec_if; 938 struct smsc_softc *sc = ifp->if_softc; 939 int rc = 0; 940 941 mutex_enter(&sc->sc_lock); 942 943 int change = ifp->if_flags ^ sc->sc_if_flags; 944 sc->sc_if_flags = ifp->if_flags; 945 946 if ((change & ~(IFF_CANTCHANGE | IFF_DEBUG)) != 0) { 947 rc = ENETRESET; 948 goto out; 949 } 950 951 if ((change & IFF_PROMISC) != 0) { 952 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 } else if (!(ifp->if_flags & IFF_PROMISC)) { 956 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 957 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 958 } 959 smsc_setmulti(sc); 960 } 961 962 out: 963 mutex_exit(&sc->sc_lock); 964 965 return rc; 966 } 967 968 969 int 970 smsc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 971 { 972 struct smsc_softc *sc = ifp->if_softc; 973 int s, error = 0; 974 975 if (sc->sc_dying) 976 return EIO; 977 978 s = splnet(); 979 error = ether_ioctl(ifp, cmd, data); 980 splx(s); 981 982 if (error == ENETRESET) { 983 error = 0; 984 if (cmd != SIOCADDMULTI && cmd != SIOCDELMULTI) 985 ; 986 else if (ifp->if_flags & IFF_RUNNING) { 987 mutex_enter(&sc->sc_lock); 988 smsc_setmulti(sc); 989 mutex_exit(&sc->sc_lock); 990 } 991 } 992 return error; 993 } 994 995 int 996 smsc_match(device_t parent, cfdata_t match, void *aux) 997 { 998 struct usb_attach_arg *uaa = aux; 999 1000 return (usb_lookup(smsc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 1001 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 1002 } 1003 1004 void 1005 smsc_attach(device_t parent, device_t self, void *aux) 1006 { 1007 struct smsc_softc *sc = device_private(self); 1008 struct usb_attach_arg *uaa = aux; 1009 struct usbd_device *dev = uaa->uaa_device; 1010 usb_interface_descriptor_t *id; 1011 usb_endpoint_descriptor_t *ed; 1012 char *devinfop; 1013 struct mii_data *mii; 1014 struct ifnet *ifp; 1015 int err, i; 1016 uint32_t mac_h, mac_l; 1017 1018 sc->sc_dev = self; 1019 sc->sc_udev = dev; 1020 sc->sc_stopping = false; 1021 1022 aprint_naive("\n"); 1023 aprint_normal("\n"); 1024 1025 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 1026 aprint_normal_dev(self, "%s\n", devinfop); 1027 usbd_devinfo_free(devinfop); 1028 1029 err = usbd_set_config_no(dev, SMSC_CONFIG_INDEX, 1); 1030 if (err) { 1031 aprint_error_dev(self, "failed to set configuration" 1032 ", err=%s\n", usbd_errstr(err)); 1033 return; 1034 } 1035 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1036 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, 0); 1037 1038 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); 1039 mutex_init(&sc->sc_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1040 mutex_init(&sc->sc_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 1041 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 1042 1043 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1044 if (err) { 1045 aprint_error_dev(self, "getting interface handle failed\n"); 1046 return; 1047 } 1048 1049 id = usbd_get_interface_descriptor(sc->sc_iface); 1050 1051 if (sc->sc_udev->ud_speed >= USB_SPEED_HIGH) 1052 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1053 else 1054 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1055 1056 /* Find endpoints. */ 1057 for (i = 0; i < id->bNumEndpoints; i++) { 1058 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1059 if (!ed) { 1060 aprint_error_dev(self, "couldn't get ep %d\n", i); 1061 return; 1062 } 1063 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1064 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1065 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1066 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1067 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1068 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1069 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1070 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1071 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1072 } 1073 } 1074 1075 ifp = &sc->sc_ec.ec_if; 1076 ifp->if_softc = sc; 1077 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 1078 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1079 ifp->if_extflags = IFEF_START_MPSAFE; 1080 ifp->if_init = smsc_init; 1081 ifp->if_ioctl = smsc_ioctl; 1082 ifp->if_start = smsc_start; 1083 ifp->if_stop = smsc_stop; 1084 1085 #ifdef notyet 1086 /* 1087 * We can do TCPv4, and UDPv4 checksums in hardware. 1088 */ 1089 ifp->if_capabilities |= 1090 /*IFCAP_CSUM_TCPv4_Tx |*/ IFCAP_CSUM_TCPv4_Rx | 1091 /*IFCAP_CSUM_UDPv4_Tx |*/ IFCAP_CSUM_UDPv4_Rx; 1092 #endif 1093 1094 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 1095 1096 /* Setup some of the basics */ 1097 sc->sc_phyno = 1; 1098 1099 /* 1100 * Attempt to get the mac address, if an EEPROM is not attached this 1101 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1102 * address based on urandom. 1103 */ 1104 memset(sc->sc_enaddr, 0xff, ETHER_ADDR_LEN); 1105 1106 prop_dictionary_t dict = device_properties(self); 1107 prop_data_t eaprop = prop_dictionary_get(dict, "mac-address"); 1108 1109 if (eaprop != NULL) { 1110 KASSERT(prop_object_type(eaprop) == PROP_TYPE_DATA); 1111 KASSERT(prop_data_size(eaprop) == ETHER_ADDR_LEN); 1112 memcpy(sc->sc_enaddr, prop_data_data_nocopy(eaprop), 1113 ETHER_ADDR_LEN); 1114 } else { 1115 /* Check if there is already a MAC address in the register */ 1116 if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1117 (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1118 sc->sc_enaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1119 sc->sc_enaddr[4] = (uint8_t)((mac_h) & 0xff); 1120 sc->sc_enaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1121 sc->sc_enaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1122 sc->sc_enaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1123 sc->sc_enaddr[0] = (uint8_t)((mac_l) & 0xff); 1124 } 1125 } 1126 1127 aprint_normal_dev(self, "Ethernet address %s\n", ether_sprintf(sc->sc_enaddr)); 1128 1129 IFQ_SET_READY(&ifp->if_snd); 1130 1131 /* Initialize MII/media info. */ 1132 mii = &sc->sc_mii; 1133 mii->mii_ifp = ifp; 1134 mii->mii_readreg = smsc_miibus_readreg; 1135 mii->mii_writereg = smsc_miibus_writereg; 1136 mii->mii_statchg = smsc_miibus_statchg; 1137 mii->mii_flags = MIIF_AUTOTSLEEP; 1138 sc->sc_ec.ec_mii = mii; 1139 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1140 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1141 1142 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1143 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1144 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1145 } else 1146 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1147 1148 if_initialize(ifp); 1149 sc->sc_ipq = if_percpuq_create(&sc->sc_ec.ec_if); 1150 ether_ifattach(ifp, sc->sc_enaddr); 1151 if_register(ifp); 1152 ether_set_ifflags_cb(&sc->sc_ec, smsc_ifflags_cb); 1153 1154 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1155 RND_TYPE_NET, RND_FLAG_DEFAULT); 1156 1157 callout_init(&sc->sc_stat_ch, 0); 1158 1159 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1160 } 1161 1162 int 1163 smsc_detach(device_t self, int flags) 1164 { 1165 struct smsc_softc *sc = device_private(self); 1166 struct ifnet *ifp = &sc->sc_ec.ec_if; 1167 int s; 1168 1169 callout_stop(&sc->sc_stat_ch); 1170 1171 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) 1172 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 1173 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) 1174 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 1175 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1176 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 1177 1178 /* 1179 * Remove any pending tasks. They cannot be executing because they run 1180 * in the same thread as detach. 1181 */ 1182 usb_rem_task(sc->sc_udev, &sc->sc_tick_task); 1183 1184 s = splusb(); 1185 1186 if (--sc->sc_refcnt >= 0) { 1187 /* Wait for processes to go away */ 1188 usb_detach_waitold(sc->sc_dev); 1189 } 1190 1191 if (ifp->if_flags & IFF_RUNNING) 1192 smsc_stop(ifp ,1); 1193 1194 rnd_detach_source(&sc->sc_rnd_source); 1195 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1196 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1197 if (ifp->if_softc != NULL) { 1198 ether_ifdetach(ifp); 1199 if_detach(ifp); 1200 } 1201 1202 #ifdef DIAGNOSTIC 1203 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1204 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1205 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1206 printf("%s: detach has active endpoints\n", 1207 device_xname(sc->sc_dev)); 1208 #endif 1209 1210 if (--sc->sc_refcnt >= 0) { 1211 /* Wait for processes to go away. */ 1212 usb_detach_waitold(sc->sc_dev); 1213 } 1214 splx(s); 1215 1216 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1217 1218 mutex_destroy(&sc->sc_mii_lock); 1219 1220 mutex_destroy(&sc->sc_rxlock); 1221 mutex_destroy(&sc->sc_txlock); 1222 mutex_destroy(&sc->sc_lock); 1223 1224 return 0; 1225 } 1226 1227 void 1228 smsc_tick_task(void *xsc) 1229 { 1230 int s; 1231 struct smsc_softc *sc = xsc; 1232 struct ifnet *ifp; 1233 struct mii_data *mii; 1234 1235 if (sc == NULL) 1236 return; 1237 1238 if (sc->sc_dying) 1239 return; 1240 ifp = &sc->sc_ec.ec_if; 1241 mii = &sc->sc_mii; 1242 if (mii == NULL) 1243 return; 1244 1245 s = splnet(); 1246 1247 mii_tick(mii); 1248 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) 1249 smsc_miibus_statchg(ifp); 1250 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 1251 1252 splx(s); 1253 } 1254 1255 int 1256 smsc_activate(device_t self, enum devact act) 1257 { 1258 struct smsc_softc *sc = device_private(self); 1259 1260 switch (act) { 1261 case DVACT_DEACTIVATE: 1262 if_deactivate(&sc->sc_ec.ec_if); 1263 sc->sc_dying = 1; 1264 return 0; 1265 default: 1266 return EOPNOTSUPP; 1267 } 1268 return 0; 1269 } 1270 1271 void 1272 smsc_lock_mii(struct smsc_softc *sc) 1273 { 1274 sc->sc_refcnt++; 1275 mutex_enter(&sc->sc_mii_lock); 1276 } 1277 1278 void 1279 smsc_unlock_mii(struct smsc_softc *sc) 1280 { 1281 mutex_exit(&sc->sc_mii_lock); 1282 if (--sc->sc_refcnt < 0) 1283 usb_detach_wakeupold(sc->sc_dev); 1284 } 1285 1286 void 1287 smsc_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1288 { 1289 struct smsc_chain *c = (struct smsc_chain *)priv; 1290 struct smsc_softc *sc = c->sc_sc; 1291 struct ifnet *ifp = &sc->sc_ec.ec_if; 1292 u_char *buf = c->sc_buf; 1293 uint32_t total_len; 1294 uint32_t rxhdr; 1295 uint16_t pktlen; 1296 struct mbuf *m; 1297 1298 mutex_enter(&sc->sc_rxlock); 1299 1300 if (sc->sc_dying) { 1301 mutex_exit(&sc->sc_rxlock); 1302 return; 1303 } 1304 1305 if (!(ifp->if_flags & IFF_RUNNING)) { 1306 mutex_exit(&sc->sc_rxlock); 1307 return; 1308 } 1309 1310 if (status != USBD_NORMAL_COMPLETION) { 1311 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1312 mutex_exit(&sc->sc_rxlock); 1313 return; 1314 } 1315 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1316 printf("%s: usb errors on rx: %s\n", 1317 device_xname(sc->sc_dev), usbd_errstr(status)); 1318 } 1319 if (status == USBD_STALLED) 1320 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1321 goto done; 1322 } 1323 1324 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1325 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1326 1327 while (total_len != 0) { 1328 if (total_len < sizeof(rxhdr)) { 1329 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1330 total_len, sizeof(rxhdr)); 1331 ifp->if_ierrors++; 1332 goto done; 1333 } 1334 1335 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1336 rxhdr = le32toh(rxhdr); 1337 buf += sizeof(rxhdr); 1338 total_len -= sizeof(rxhdr); 1339 1340 if (rxhdr & SMSC_RX_STAT_COLLISION) 1341 ifp->if_collisions++; 1342 1343 if (rxhdr & (SMSC_RX_STAT_ERROR 1344 | SMSC_RX_STAT_LENGTH_ERROR 1345 | SMSC_RX_STAT_MII_ERROR)) { 1346 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1347 ifp->if_ierrors++; 1348 goto done; 1349 } 1350 1351 pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1352 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1353 "0x%08x\n", total_len, pktlen, rxhdr); 1354 1355 if (pktlen < ETHER_HDR_LEN) { 1356 smsc_dbg_printf(sc, "pktlen %d < ETHER_HDR_LEN %d\n", 1357 pktlen, ETHER_HDR_LEN); 1358 ifp->if_ierrors++; 1359 goto done; 1360 } 1361 1362 pktlen += ETHER_ALIGN; 1363 1364 if (pktlen > MCLBYTES) { 1365 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1366 pktlen, MCLBYTES); 1367 ifp->if_ierrors++; 1368 goto done; 1369 } 1370 1371 if (pktlen > total_len) { 1372 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1373 pktlen, total_len); 1374 ifp->if_ierrors++; 1375 goto done; 1376 } 1377 1378 m = smsc_newbuf(); 1379 if (m == NULL) { 1380 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1381 ifp->if_ierrors++; 1382 goto done; 1383 } 1384 1385 ifp->if_ipackets++; 1386 m_set_rcvif(m, ifp); 1387 m->m_pkthdr.len = m->m_len = pktlen; 1388 m->m_flags |= M_HASFCS; 1389 m_adj(m, ETHER_ALIGN); 1390 1391 KASSERT(m->m_len < MCLBYTES); 1392 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1393 1394 /* Check if RX TCP/UDP checksumming is being offloaded */ 1395 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1396 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1397 struct ether_header *eh; 1398 1399 eh = mtod(m, struct ether_header *); 1400 1401 /* Remove the extra 2 bytes of the csum */ 1402 m_adj(m, -2); 1403 1404 /* 1405 * The checksum appears to be simplistically calculated 1406 * over the udp/tcp header and data up to the end of the 1407 * eth frame. Which means if the eth frame is padded 1408 * the csum calculation is incorrectly performed over 1409 * the padding bytes as well. Therefore to be safe we 1410 * ignore the H/W csum on frames less than or equal to 1411 * 64 bytes. 1412 * 1413 * Ignore H/W csum for non-IPv4 packets. 1414 */ 1415 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1416 be16toh(eh->ether_type), pktlen); 1417 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1418 pktlen > ETHER_MIN_LEN) { 1419 1420 m->m_pkthdr.csum_flags |= 1421 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1422 1423 /* 1424 * Copy the TCP/UDP checksum from the last 2 1425 * bytes of the transfer and put in the 1426 * csum_data field. 1427 */ 1428 memcpy(&m->m_pkthdr.csum_data, 1429 buf + pktlen - 2, 2); 1430 /* 1431 * The data is copied in network order, but the 1432 * csum algorithm in the kernel expects it to be 1433 * in host network order. 1434 */ 1435 m->m_pkthdr.csum_data = 1436 ntohs(m->m_pkthdr.csum_data); 1437 smsc_dbg_printf(sc, 1438 "RX checksum offloaded (0x%04x)\n", 1439 m->m_pkthdr.csum_data); 1440 } 1441 } 1442 1443 /* round up to next longword */ 1444 pktlen = (pktlen + 3) & ~0x3; 1445 1446 /* total_len does not include the padding */ 1447 if (pktlen > total_len) 1448 pktlen = total_len; 1449 1450 buf += pktlen; 1451 total_len -= pktlen; 1452 1453 mutex_exit(&sc->sc_rxlock); 1454 1455 /* push the packet up */ 1456 bpf_mtap(ifp, m); 1457 if_percpuq_enqueue(sc->sc_ipq, m); 1458 1459 mutex_enter(&sc->sc_rxlock); 1460 } 1461 1462 done: 1463 mutex_exit(&sc->sc_rxlock); 1464 1465 /* Setup new transfer. */ 1466 usbd_setup_xfer(xfer, c, c->sc_buf, sc->sc_bufsz, USBD_SHORT_XFER_OK, 1467 USBD_NO_TIMEOUT, smsc_rxeof); 1468 usbd_transfer(xfer); 1469 1470 return; 1471 } 1472 1473 void 1474 smsc_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1475 { 1476 struct smsc_chain *c = priv; 1477 struct smsc_softc *sc = c->sc_sc; 1478 struct ifnet *ifp = &sc->sc_ec.ec_if; 1479 1480 mutex_enter(&sc->sc_txlock); 1481 1482 if (sc->sc_dying) { 1483 mutex_exit(&sc->sc_txlock); 1484 return; 1485 } 1486 1487 if (sc->sc_stopping) { 1488 mutex_exit(&sc->sc_txlock); 1489 return; 1490 } 1491 1492 ifp->if_timer = 0; 1493 ifp->if_flags &= ~IFF_OACTIVE; 1494 1495 if (status != USBD_NORMAL_COMPLETION) { 1496 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1497 mutex_exit(&sc->sc_txlock); 1498 return; 1499 } 1500 ifp->if_oerrors++; 1501 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1502 usbd_errstr(status)); 1503 if (status == USBD_STALLED) 1504 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1505 mutex_exit(&sc->sc_txlock); 1506 return; 1507 } 1508 ifp->if_opackets++; 1509 1510 m_freem(c->sc_mbuf); 1511 c->sc_mbuf = NULL; 1512 1513 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1514 smsc_start_locked(ifp); 1515 1516 mutex_exit(&sc->sc_txlock); 1517 } 1518 1519 int 1520 smsc_tx_list_init(struct smsc_softc *sc) 1521 { 1522 struct smsc_cdata *cd = &sc->sc_cdata; 1523 struct smsc_chain *c; 1524 int i; 1525 1526 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1527 c = &cd->tx_chain[i]; 1528 c->sc_sc = sc; 1529 c->sc_idx = i; 1530 c->sc_mbuf = NULL; 1531 if (c->sc_xfer == NULL) { 1532 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_TX], 1533 sc->sc_bufsz, USBD_FORCE_SHORT_XFER, 0, 1534 &c->sc_xfer); 1535 if (error) 1536 return EIO; 1537 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1538 } 1539 } 1540 1541 return 0; 1542 } 1543 1544 void 1545 smsc_tx_list_free(struct smsc_softc *sc) 1546 { 1547 /* Free TX resources. */ 1548 for (size_t i = 0; i < SMSC_TX_LIST_CNT; i++) { 1549 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 1550 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 1551 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 1552 } 1553 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 1554 usbd_destroy_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 1555 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 1556 } 1557 } 1558 } 1559 1560 int 1561 smsc_rx_list_init(struct smsc_softc *sc) 1562 { 1563 struct smsc_cdata *cd = &sc->sc_cdata; 1564 struct smsc_chain *c; 1565 int i; 1566 1567 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1568 c = &cd->rx_chain[i]; 1569 c->sc_sc = sc; 1570 c->sc_idx = i; 1571 c->sc_mbuf = NULL; 1572 if (c->sc_xfer == NULL) { 1573 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_RX], 1574 sc->sc_bufsz, USBD_SHORT_XFER_OK, 0, &c->sc_xfer); 1575 if (error) 1576 return error; 1577 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1578 } 1579 } 1580 1581 return 0; 1582 } 1583 1584 void 1585 smsc_rx_list_free(struct smsc_softc *sc) 1586 { 1587 /* Free RX resources. */ 1588 for (size_t i = 0; i < SMSC_RX_LIST_CNT; i++) { 1589 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 1590 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 1591 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 1592 } 1593 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 1594 usbd_destroy_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 1595 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 1596 } 1597 } 1598 } 1599 1600 struct mbuf * 1601 smsc_newbuf(void) 1602 { 1603 struct mbuf *m; 1604 1605 MGETHDR(m, M_DONTWAIT, MT_DATA); 1606 if (m == NULL) 1607 return NULL; 1608 1609 MCLGET(m, M_DONTWAIT); 1610 if (!(m->m_flags & M_EXT)) { 1611 m_freem(m); 1612 return NULL; 1613 } 1614 1615 return m; 1616 } 1617 1618 int 1619 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1620 { 1621 struct ifnet * const ifp = &sc->sc_ec.ec_if; 1622 struct smsc_chain * const c = &sc->sc_cdata.tx_chain[idx]; 1623 uint32_t txhdr; 1624 uint32_t frm_len = 0; 1625 1626 /* 1627 * Each frame is prefixed with two 32-bit values describing the 1628 * length of the packet and buffer. 1629 */ 1630 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1631 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1632 txhdr = htole32(txhdr); 1633 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1634 1635 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1636 txhdr = htole32(txhdr); 1637 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1638 1639 frm_len += 8; 1640 1641 /* Next copy in the actual packet */ 1642 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1643 frm_len += m->m_pkthdr.len; 1644 1645 c->sc_mbuf = m; 1646 1647 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, frm_len, 1648 USBD_FORCE_SHORT_XFER, 10000, smsc_txeof); 1649 1650 usbd_status err = usbd_transfer(c->sc_xfer); 1651 /* XXXNH get task to stop interface */ 1652 if (err != USBD_IN_PROGRESS) { 1653 smsc_stop(ifp, 0); 1654 return EIO; 1655 } 1656 1657 sc->sc_cdata.tx_cnt++; 1658 1659 return 0; 1660 } 1661
Indexes created Thu Oct 02 01:09:59 GMT 2025