if_smsc.c revision 1.33.2.2
1 /* $NetBSD: if_smsc.c,v 1.33.2.2 2018/09/06 06:56:04 pgoyette 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 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: if_smsc.c,v 1.33.2.2 2018/09/06 06:56:04 pgoyette Exp $"); 65 66 #ifdef _KERNEL_OPT 67 #include "opt_usb.h" 68 #include "opt_inet.h" 69 #endif 70 71 #include <sys/param.h> 72 #include <sys/bus.h> 73 #include <sys/systm.h> 74 #include <sys/sockio.h> 75 #include <sys/mbuf.h> 76 #include <sys/mutex.h> 77 #include <sys/kernel.h> 78 #include <sys/proc.h> 79 #include <sys/socket.h> 80 81 #include <sys/device.h> 82 83 #include <sys/rndsource.h> 84 85 #include <net/if.h> 86 #include <net/if_dl.h> 87 #include <net/if_media.h> 88 #include <net/if_ether.h> 89 90 #include <net/bpf.h> 91 92 #ifdef INET 93 #include <netinet/in.h> 94 #include <netinet/if_inarp.h> 95 #endif 96 97 #include <dev/mii/mii.h> 98 #include <dev/mii/miivar.h> 99 100 #include <dev/usb/usb.h> 101 #include <dev/usb/usbdi.h> 102 #include <dev/usb/usbdi_util.h> 103 #include <dev/usb/usbdivar.h> 104 #include <dev/usb/usbdevs.h> 105 106 #include <dev/usb/if_smscreg.h> 107 #include <dev/usb/if_smscvar.h> 108 109 #include "ioconf.h" 110 111 #ifdef USB_DEBUG 112 int smsc_debug = 0; 113 #endif 114 115 #define ETHER_ALIGN 2 116 /* 117 * Various supported device vendors/products. 118 */ 119 static const struct usb_devno smsc_devs[] = { 120 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN89530 }, 121 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9530 }, 122 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9730 }, 123 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500 }, 124 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A }, 125 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_ALT }, 126 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_HAL }, 127 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_SAL10 }, 128 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_ALT }, 129 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_SAL10 }, 130 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505 }, 131 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A }, 132 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_HAL }, 133 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_SAL10 }, 134 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505_SAL10 }, 135 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14 }, 136 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_ALT }, 137 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_SAL10 } 138 }; 139 140 #ifdef USB_DEBUG 141 #define smsc_dbg_printf(sc, fmt, args...) \ 142 do { \ 143 if (smsc_debug > 0) \ 144 printf("debug: " fmt, ##args); \ 145 } while(0) 146 #else 147 #define smsc_dbg_printf(sc, fmt, args...) 148 #endif 149 150 #define smsc_warn_printf(sc, fmt, args...) \ 151 printf("%s: warning: " fmt, device_xname((sc)->sc_dev), ##args) 152 153 #define smsc_err_printf(sc, fmt, args...) \ 154 printf("%s: error: " fmt, device_xname((sc)->sc_dev), ##args) 155 156 /* Function declarations */ 157 int smsc_chip_init(struct smsc_softc *); 158 void smsc_setmulti(struct smsc_softc *); 159 int smsc_setmacaddress(struct smsc_softc *, const uint8_t *); 160 161 int smsc_match(device_t, cfdata_t, void *); 162 void smsc_attach(device_t, device_t, void *); 163 int smsc_detach(device_t, int); 164 int smsc_activate(device_t, enum devact); 165 166 int smsc_init(struct ifnet *); 167 void smsc_start(struct ifnet *); 168 int smsc_ioctl(struct ifnet *, u_long, void *); 169 void smsc_stop(struct ifnet *, int); 170 171 void smsc_reset(struct smsc_softc *); 172 struct mbuf *smsc_newbuf(void); 173 174 void smsc_tick(void *); 175 void smsc_tick_task(void *); 176 void smsc_miibus_statchg(struct ifnet *); 177 int smsc_miibus_readreg(device_t, int, int); 178 void smsc_miibus_writereg(device_t, int, int, int); 179 int smsc_ifmedia_upd(struct ifnet *); 180 void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 181 void smsc_lock_mii(struct smsc_softc *); 182 void smsc_unlock_mii(struct smsc_softc *); 183 184 int smsc_tx_list_init(struct smsc_softc *); 185 int smsc_rx_list_init(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 { 418 419 return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 420 } 421 422 void 423 smsc_setmulti(struct smsc_softc *sc) 424 { 425 struct ifnet *ifp = &sc->sc_ec.ec_if; 426 struct ether_multi *enm; 427 struct ether_multistep step; 428 uint32_t hashtbl[2] = { 0, 0 }; 429 uint32_t hash; 430 431 if (sc->sc_dying) 432 return; 433 434 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 435 allmulti: 436 smsc_dbg_printf(sc, "receive all multicast enabled\n"); 437 sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 438 sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 439 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 440 return; 441 } else { 442 sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 443 sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 444 } 445 446 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 447 while (enm != NULL) { 448 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 449 ETHER_ADDR_LEN) != 0) 450 goto allmulti; 451 452 hash = smsc_hash(enm->enm_addrlo); 453 hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 454 ETHER_NEXT_MULTI(step, enm); 455 } 456 457 /* Debug */ 458 if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) { 459 smsc_dbg_printf(sc, "receive select group of macs\n"); 460 } else { 461 smsc_dbg_printf(sc, "receive own packets only\n"); 462 } 463 464 /* Write the hash table and mac control registers */ 465 ifp->if_flags &= ~IFF_ALLMULTI; 466 smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 467 smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 468 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 469 } 470 471 int 472 smsc_sethwcsum(struct smsc_softc *sc) 473 { 474 struct ifnet *ifp = &sc->sc_ec.ec_if; 475 uint32_t val; 476 int err; 477 478 if (!ifp) 479 return EIO; 480 481 err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 482 if (err != 0) { 483 smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", 484 err); 485 return err; 486 } 487 488 /* Enable/disable the Rx checksum */ 489 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx)) 490 val |= (SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 491 else 492 val &= ~(SMSC_COE_CTRL_RX_EN | SMSC_COE_CTRL_RX_MODE); 493 494 /* Enable/disable the Tx checksum (currently not supported) */ 495 if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Tx|IFCAP_CSUM_UDPv4_Tx)) 496 val |= SMSC_COE_CTRL_TX_EN; 497 else 498 val &= ~SMSC_COE_CTRL_TX_EN; 499 500 sc->sc_coe_ctrl = val; 501 502 err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 503 if (err != 0) { 504 smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", 505 err); 506 return err; 507 } 508 509 return 0; 510 } 511 512 int 513 smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 514 { 515 int err; 516 uint32_t val; 517 518 smsc_dbg_printf(sc, "setting mac address to " 519 "%02x:%02x:%02x:%02x:%02x:%02x\n", 520 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 521 522 val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 523 if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 524 goto done; 525 526 val = (addr[5] << 8) | addr[4]; 527 err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 528 529 done: 530 return err; 531 } 532 533 void 534 smsc_reset(struct smsc_softc *sc) 535 { 536 if (sc->sc_dying) 537 return; 538 539 /* Wait a little while for the chip to get its brains in order. */ 540 DELAY(1000); 541 542 /* Reinitialize controller to achieve full reset. */ 543 smsc_chip_init(sc); 544 } 545 546 int 547 smsc_init(struct ifnet *ifp) 548 { 549 struct smsc_softc *sc = ifp->if_softc; 550 struct smsc_chain *c; 551 usbd_status err; 552 int s, i; 553 554 if (sc->sc_dying) 555 return EIO; 556 557 s = splnet(); 558 559 /* Cancel pending I/O */ 560 if (ifp->if_flags & IFF_RUNNING) 561 smsc_stop(ifp, 1); 562 563 /* Reset the ethernet interface. */ 564 smsc_reset(sc); 565 566 /* Load the multicast filter. */ 567 smsc_setmulti(sc); 568 569 /* TCP/UDP checksum offload engines. */ 570 smsc_sethwcsum(sc); 571 572 /* Open RX and TX pipes. */ 573 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 574 USBD_EXCLUSIVE_USE, &sc->sc_ep[SMSC_ENDPT_RX]); 575 if (err) { 576 printf("%s: open rx pipe failed: %s\n", 577 device_xname(sc->sc_dev), usbd_errstr(err)); 578 splx(s); 579 return EIO; 580 } 581 582 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 583 USBD_EXCLUSIVE_USE, &sc->sc_ep[SMSC_ENDPT_TX]); 584 if (err) { 585 printf("%s: open tx pipe failed: %s\n", 586 device_xname(sc->sc_dev), usbd_errstr(err)); 587 splx(s); 588 return EIO; 589 } 590 591 /* Init RX ring. */ 592 if (smsc_rx_list_init(sc)) { 593 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 594 splx(s); 595 return EIO; 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 splx(s); 602 return EIO; 603 } 604 605 /* Start up the receive pipe. */ 606 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 607 c = &sc->sc_cdata.rx_chain[i]; 608 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, sc->sc_bufsz, 609 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, smsc_rxeof); 610 usbd_transfer(c->sc_xfer); 611 } 612 613 /* Indicate we are up and running. */ 614 ifp->if_flags |= IFF_RUNNING; 615 ifp->if_flags &= ~IFF_OACTIVE; 616 617 splx(s); 618 619 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 620 621 return 0; 622 } 623 624 void 625 smsc_start(struct ifnet *ifp) 626 { 627 struct smsc_softc *sc = ifp->if_softc; 628 struct mbuf *m_head = NULL; 629 630 /* Don't send anything if there is no link or controller is busy. */ 631 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 632 return; 633 } 634 635 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) 636 return; 637 638 IFQ_POLL(&ifp->if_snd, m_head); 639 if (m_head == NULL) 640 return; 641 642 if (smsc_encap(sc, m_head, 0)) { 643 ifp->if_flags |= IFF_OACTIVE; 644 return; 645 } 646 IFQ_DEQUEUE(&ifp->if_snd, m_head); 647 648 bpf_mtap(ifp, m_head, BPF_D_OUT); 649 650 ifp->if_flags |= IFF_OACTIVE; 651 652 /* 653 * Set a timeout in case the chip goes out to lunch. 654 */ 655 ifp->if_timer = 5; 656 } 657 658 void 659 smsc_tick(void *xsc) 660 { 661 struct smsc_softc *sc = xsc; 662 663 if (sc == NULL) 664 return; 665 666 if (sc->sc_dying) 667 return; 668 669 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 670 } 671 672 void 673 smsc_stop(struct ifnet *ifp, int disable) 674 { 675 usbd_status err; 676 struct smsc_softc *sc = ifp->if_softc; 677 int i; 678 679 smsc_reset(sc); 680 681 ifp = &sc->sc_ec.ec_if; 682 ifp->if_timer = 0; 683 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 684 685 callout_stop(&sc->sc_stat_ch); 686 687 /* Stop transfers. */ 688 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 689 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 690 if (err) { 691 printf("%s: abort rx pipe failed: %s\n", 692 device_xname(sc->sc_dev), usbd_errstr(err)); 693 } 694 } 695 696 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 697 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 698 if (err) { 699 printf("%s: abort tx pipe failed: %s\n", 700 device_xname(sc->sc_dev), usbd_errstr(err)); 701 } 702 } 703 704 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 705 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 706 if (err) { 707 printf("%s: abort intr pipe failed: %s\n", 708 device_xname(sc->sc_dev), usbd_errstr(err)); 709 } 710 } 711 712 /* Free RX resources. */ 713 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 714 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 715 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 716 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 717 } 718 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 719 usbd_destroy_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 720 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 721 } 722 } 723 724 /* Free TX resources. */ 725 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 726 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 727 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 728 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 729 } 730 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 731 usbd_destroy_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 732 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 733 } 734 } 735 /* Close pipes */ 736 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 737 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 738 if (err) { 739 printf("%s: close rx pipe failed: %s\n", 740 device_xname(sc->sc_dev), usbd_errstr(err)); 741 } 742 sc->sc_ep[SMSC_ENDPT_RX] = NULL; 743 } 744 745 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 746 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 747 if (err) { 748 printf("%s: close tx pipe failed: %s\n", 749 device_xname(sc->sc_dev), usbd_errstr(err)); 750 } 751 sc->sc_ep[SMSC_ENDPT_TX] = NULL; 752 } 753 754 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 755 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 756 if (err) { 757 printf("%s: close intr pipe failed: %s\n", 758 device_xname(sc->sc_dev), usbd_errstr(err)); 759 } 760 sc->sc_ep[SMSC_ENDPT_INTR] = NULL; 761 } 762 } 763 764 int 765 smsc_chip_init(struct smsc_softc *sc) 766 { 767 int err; 768 uint32_t reg_val; 769 int burst_cap; 770 771 /* Enter H/W config mode */ 772 smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 773 774 if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, 775 SMSC_HW_CFG_LRST)) != 0) { 776 smsc_warn_printf(sc, "timed-out waiting for reset to " 777 "complete\n"); 778 goto init_failed; 779 } 780 781 /* Reset the PHY */ 782 smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 783 784 if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, 785 SMSC_PM_CTRL_PHY_RST)) != 0) { 786 smsc_warn_printf(sc, "timed-out waiting for phy reset to " 787 "complete\n"); 788 goto init_failed; 789 } 790 usbd_delay_ms(sc->sc_udev, 40); 791 792 /* Set the mac address */ 793 struct ifnet *ifp = &sc->sc_ec.ec_if; 794 const char *eaddr = CLLADDR(ifp->if_sadl); 795 if ((err = smsc_setmacaddress(sc, eaddr)) != 0) { 796 smsc_warn_printf(sc, "failed to set the MAC address\n"); 797 goto init_failed; 798 } 799 800 /* 801 * Don't know what the HW_CFG_BIR bit is, but following the reset 802 * sequence as used in the Linux driver. 803 */ 804 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 805 smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 806 goto init_failed; 807 } 808 reg_val |= SMSC_HW_CFG_BIR; 809 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 810 811 /* 812 * There is a so called 'turbo mode' that the linux driver supports, it 813 * seems to allow you to jam multiple frames per Rx transaction. 814 * By default this driver supports that and therefore allows multiple 815 * frames per USB transfer. 816 * 817 * The xfer buffer size needs to reflect this as well, therefore based 818 * on the calculations in the Linux driver the RX bufsize is set to 819 * 18944, 820 * bufsz = (16 * 1024 + 5 * 512) 821 * 822 * Burst capability is the number of URBs that can be in a burst of 823 * data/ethernet frames. 824 */ 825 826 if (sc->sc_udev->ud_speed == USB_SPEED_HIGH) 827 burst_cap = 37; 828 else 829 burst_cap = 128; 830 831 smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 832 833 /* Set the default bulk in delay (magic value from Linux driver) */ 834 smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 835 836 /* 837 * Initialise the RX interface 838 */ 839 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 840 smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", 841 err); 842 goto init_failed; 843 } 844 845 /* 846 * The following settings are used for 'turbo mode', a.k.a multiple 847 * frames per Rx transaction (again info taken form Linux driver). 848 */ 849 reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 850 851 /* 852 * set Rx data offset to ETHER_ALIGN which will make the IP header 853 * align on a word boundary. 854 */ 855 reg_val |= ETHER_ALIGN << SMSC_HW_CFG_RXDOFF_SHIFT; 856 857 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 858 859 /* Clear the status register ? */ 860 smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 861 862 /* Read and display the revision register */ 863 if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 864 smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 865 goto init_failed; 866 } 867 868 /* GPIO/LED setup */ 869 reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 870 SMSC_LED_GPIO_CFG_FDX_LED; 871 smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 872 873 /* 874 * Initialise the TX interface 875 */ 876 smsc_write_reg(sc, SMSC_FLOW, 0); 877 878 smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 879 880 /* Read the current MAC configuration */ 881 if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 882 smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 883 goto init_failed; 884 } 885 886 /* disable pad stripping, collides with checksum offload */ 887 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PADSTR; 888 889 /* Vlan */ 890 smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 891 892 /* 893 * Start TX 894 */ 895 sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 896 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 897 smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 898 899 /* 900 * Start RX 901 */ 902 sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 903 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 904 905 return 0; 906 907 init_failed: 908 smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 909 return err; 910 } 911 912 int 913 smsc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 914 { 915 struct smsc_softc *sc = ifp->if_softc; 916 struct ifreq /*const*/ *ifr = data; 917 int s, error = 0; 918 919 if (sc->sc_dying) 920 return EIO; 921 922 s = splnet(); 923 924 switch(cmd) { 925 case SIOCSIFFLAGS: 926 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 927 break; 928 929 switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { 930 case IFF_RUNNING: 931 smsc_stop(ifp, 1); 932 break; 933 case IFF_UP: 934 smsc_init(ifp); 935 break; 936 case IFF_UP | IFF_RUNNING: 937 if (ifp->if_flags & IFF_PROMISC && 938 !(sc->sc_if_flags & IFF_PROMISC)) { 939 sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 940 smsc_write_reg(sc, SMSC_MAC_CSR, 941 sc->sc_mac_csr); 942 smsc_setmulti(sc); 943 } else if (!(ifp->if_flags & IFF_PROMISC) && 944 sc->sc_if_flags & IFF_PROMISC) { 945 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 946 smsc_write_reg(sc, SMSC_MAC_CSR, 947 sc->sc_mac_csr); 948 smsc_setmulti(sc); 949 } else { 950 smsc_init(ifp); 951 } 952 break; 953 } 954 sc->sc_if_flags = ifp->if_flags; 955 break; 956 957 case SIOCGIFMEDIA: 958 case SIOCSIFMEDIA: 959 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 960 break; 961 962 default: 963 if ((error = ether_ioctl(ifp, cmd, data)) != ENETRESET) 964 break; 965 966 error = 0; 967 968 if (cmd == SIOCADDMULTI || cmd == SIOCDELMULTI) 969 smsc_setmulti(sc); 970 971 } 972 splx(s); 973 974 return error; 975 } 976 977 int 978 smsc_match(device_t parent, cfdata_t match, void *aux) 979 { 980 struct usb_attach_arg *uaa = aux; 981 982 return (usb_lookup(smsc_devs, uaa->uaa_vendor, uaa->uaa_product) != NULL) ? 983 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 984 } 985 986 void 987 smsc_attach(device_t parent, device_t self, void *aux) 988 { 989 struct smsc_softc *sc = device_private(self); 990 struct usb_attach_arg *uaa = aux; 991 struct usbd_device *dev = uaa->uaa_device; 992 usb_interface_descriptor_t *id; 993 usb_endpoint_descriptor_t *ed; 994 char *devinfop; 995 struct mii_data *mii; 996 struct ifnet *ifp; 997 int err, s, i; 998 uint32_t mac_h, mac_l; 999 1000 sc->sc_dev = self; 1001 sc->sc_udev = dev; 1002 1003 aprint_naive("\n"); 1004 aprint_normal("\n"); 1005 1006 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 1007 aprint_normal_dev(self, "%s\n", devinfop); 1008 usbd_devinfo_free(devinfop); 1009 1010 err = usbd_set_config_no(dev, SMSC_CONFIG_INDEX, 1); 1011 if (err) { 1012 aprint_error_dev(self, "failed to set configuration" 1013 ", err=%s\n", usbd_errstr(err)); 1014 return; 1015 } 1016 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1017 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, 0); 1018 usb_init_task(&sc->sc_stop_task, (void (*)(void *))smsc_stop, sc, 0); 1019 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 1020 1021 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1022 if (err) { 1023 aprint_error_dev(self, "getting interface handle failed\n"); 1024 return; 1025 } 1026 1027 id = usbd_get_interface_descriptor(sc->sc_iface); 1028 1029 if (sc->sc_udev->ud_speed >= USB_SPEED_HIGH) 1030 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1031 else 1032 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1033 1034 /* Find endpoints. */ 1035 for (i = 0; i < id->bNumEndpoints; i++) { 1036 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1037 if (!ed) { 1038 aprint_error_dev(self, "couldn't get ep %d\n", i); 1039 return; 1040 } 1041 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1042 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1043 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1044 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1045 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1046 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1047 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1048 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1049 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1050 } 1051 } 1052 1053 s = splnet(); 1054 1055 ifp = &sc->sc_ec.ec_if; 1056 ifp->if_softc = sc; 1057 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 1058 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1059 ifp->if_init = smsc_init; 1060 ifp->if_ioctl = smsc_ioctl; 1061 ifp->if_start = smsc_start; 1062 ifp->if_stop = smsc_stop; 1063 1064 #ifdef notyet 1065 /* 1066 * We can do TCPv4, and UDPv4 checksums in hardware. 1067 */ 1068 ifp->if_capabilities |= 1069 /*IFCAP_CSUM_TCPv4_Tx |*/ IFCAP_CSUM_TCPv4_Rx | 1070 /*IFCAP_CSUM_UDPv4_Tx |*/ IFCAP_CSUM_UDPv4_Rx; 1071 #endif 1072 1073 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 1074 1075 /* Setup some of the basics */ 1076 sc->sc_phyno = 1; 1077 1078 /* 1079 * Attempt to get the mac address, if an EEPROM is not attached this 1080 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1081 * address based on urandom. 1082 */ 1083 memset(sc->sc_enaddr, 0xff, ETHER_ADDR_LEN); 1084 1085 prop_dictionary_t dict = device_properties(self); 1086 prop_data_t eaprop = prop_dictionary_get(dict, "mac-address"); 1087 1088 if (eaprop != NULL) { 1089 KASSERT(prop_object_type(eaprop) == PROP_TYPE_DATA); 1090 KASSERT(prop_data_size(eaprop) == ETHER_ADDR_LEN); 1091 memcpy(sc->sc_enaddr, prop_data_data_nocopy(eaprop), 1092 ETHER_ADDR_LEN); 1093 } else 1094 /* Check if there is already a MAC address in the register */ 1095 if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1096 (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1097 sc->sc_enaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1098 sc->sc_enaddr[4] = (uint8_t)((mac_h) & 0xff); 1099 sc->sc_enaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1100 sc->sc_enaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1101 sc->sc_enaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1102 sc->sc_enaddr[0] = (uint8_t)((mac_l) & 0xff); 1103 } 1104 1105 aprint_normal_dev(self, "Ethernet address %s\n", ether_sprintf(sc->sc_enaddr)); 1106 1107 IFQ_SET_READY(&ifp->if_snd); 1108 1109 /* Initialize MII/media info. */ 1110 mii = &sc->sc_mii; 1111 mii->mii_ifp = ifp; 1112 mii->mii_readreg = smsc_miibus_readreg; 1113 mii->mii_writereg = smsc_miibus_writereg; 1114 mii->mii_statchg = smsc_miibus_statchg; 1115 mii->mii_flags = MIIF_AUTOTSLEEP; 1116 sc->sc_ec.ec_mii = mii; 1117 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1118 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1119 1120 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1121 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1122 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1123 } else 1124 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1125 1126 if_attach(ifp); 1127 ether_ifattach(ifp, sc->sc_enaddr); 1128 1129 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1130 RND_TYPE_NET, RND_FLAG_DEFAULT); 1131 1132 callout_init(&sc->sc_stat_ch, 0); 1133 1134 splx(s); 1135 1136 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1137 } 1138 1139 int 1140 smsc_detach(device_t self, int flags) 1141 { 1142 struct smsc_softc *sc = device_private(self); 1143 struct ifnet *ifp = &sc->sc_ec.ec_if; 1144 int s; 1145 1146 callout_halt(&sc->sc_stat_ch, NULL); 1147 1148 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) 1149 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 1150 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) 1151 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 1152 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1153 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 1154 1155 usb_rem_task_wait(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER, 1156 NULL); 1157 usb_rem_task_wait(sc->sc_udev, &sc->sc_stop_task, USB_TASKQ_DRIVER, 1158 NULL); 1159 1160 s = splusb(); 1161 1162 if (--sc->sc_refcnt >= 0) { 1163 /* Wait for processes to go away */ 1164 usb_detach_waitold(sc->sc_dev); 1165 } 1166 1167 if (ifp->if_flags & IFF_RUNNING) 1168 smsc_stop(ifp ,1); 1169 1170 rnd_detach_source(&sc->sc_rnd_source); 1171 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1172 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1173 if (ifp->if_softc != NULL) { 1174 ether_ifdetach(ifp); 1175 if_detach(ifp); 1176 } 1177 1178 #ifdef DIAGNOSTIC 1179 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1180 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1181 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1182 printf("%s: detach has active endpoints\n", 1183 device_xname(sc->sc_dev)); 1184 #endif 1185 1186 if (--sc->sc_refcnt >= 0) { 1187 /* Wait for processes to go away. */ 1188 usb_detach_waitold(sc->sc_dev); 1189 } 1190 splx(s); 1191 1192 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1193 1194 mutex_destroy(&sc->sc_mii_lock); 1195 1196 return 0; 1197 } 1198 1199 void 1200 smsc_tick_task(void *xsc) 1201 { 1202 int s; 1203 struct smsc_softc *sc = xsc; 1204 struct ifnet *ifp; 1205 struct mii_data *mii; 1206 1207 if (sc == NULL) 1208 return; 1209 1210 if (sc->sc_dying) 1211 return; 1212 ifp = &sc->sc_ec.ec_if; 1213 mii = &sc->sc_mii; 1214 if (mii == NULL) 1215 return; 1216 1217 s = splnet(); 1218 1219 mii_tick(mii); 1220 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) 1221 smsc_miibus_statchg(ifp); 1222 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 1223 1224 splx(s); 1225 } 1226 1227 int 1228 smsc_activate(device_t self, enum devact act) 1229 { 1230 struct smsc_softc *sc = device_private(self); 1231 1232 switch (act) { 1233 case DVACT_DEACTIVATE: 1234 if_deactivate(&sc->sc_ec.ec_if); 1235 sc->sc_dying = 1; 1236 return 0; 1237 default: 1238 return EOPNOTSUPP; 1239 } 1240 return 0; 1241 } 1242 1243 void 1244 smsc_lock_mii(struct smsc_softc *sc) 1245 { 1246 sc->sc_refcnt++; 1247 mutex_enter(&sc->sc_mii_lock); 1248 } 1249 1250 void 1251 smsc_unlock_mii(struct smsc_softc *sc) 1252 { 1253 mutex_exit(&sc->sc_mii_lock); 1254 if (--sc->sc_refcnt < 0) 1255 usb_detach_wakeupold(sc->sc_dev); 1256 } 1257 1258 void 1259 smsc_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1260 { 1261 struct smsc_chain *c = (struct smsc_chain *)priv; 1262 struct smsc_softc *sc = c->sc_sc; 1263 struct ifnet *ifp = &sc->sc_ec.ec_if; 1264 u_char *buf = c->sc_buf; 1265 uint32_t total_len; 1266 uint32_t rxhdr; 1267 uint16_t pktlen; 1268 struct mbuf *m; 1269 int s; 1270 1271 if (sc->sc_dying) 1272 return; 1273 1274 if (!(ifp->if_flags & IFF_RUNNING)) 1275 return; 1276 1277 if (status != USBD_NORMAL_COMPLETION) { 1278 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 1279 return; 1280 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1281 printf("%s: usb errors on rx: %s\n", 1282 device_xname(sc->sc_dev), usbd_errstr(status)); 1283 } 1284 if (status == USBD_STALLED) 1285 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1286 goto done; 1287 } 1288 1289 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1290 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1291 1292 while (total_len != 0) { 1293 if (total_len < sizeof(rxhdr)) { 1294 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1295 total_len, sizeof(rxhdr)); 1296 ifp->if_ierrors++; 1297 goto done; 1298 } 1299 1300 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1301 rxhdr = le32toh(rxhdr); 1302 buf += sizeof(rxhdr); 1303 total_len -= sizeof(rxhdr); 1304 1305 if (rxhdr & SMSC_RX_STAT_COLLISION) 1306 ifp->if_collisions++; 1307 1308 if (rxhdr & (SMSC_RX_STAT_ERROR 1309 | SMSC_RX_STAT_LENGTH_ERROR 1310 | SMSC_RX_STAT_MII_ERROR)) { 1311 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1312 ifp->if_ierrors++; 1313 goto done; 1314 } 1315 1316 pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1317 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1318 "0x%08x\n", total_len, pktlen, rxhdr); 1319 1320 if (pktlen < ETHER_HDR_LEN) { 1321 smsc_dbg_printf(sc, "pktlen %d < ETHER_HDR_LEN %d\n", 1322 pktlen, ETHER_HDR_LEN); 1323 ifp->if_ierrors++; 1324 goto done; 1325 } 1326 1327 pktlen += ETHER_ALIGN; 1328 1329 if (pktlen > MCLBYTES) { 1330 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1331 pktlen, MCLBYTES); 1332 ifp->if_ierrors++; 1333 goto done; 1334 } 1335 1336 if (pktlen > total_len) { 1337 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1338 pktlen, total_len); 1339 ifp->if_ierrors++; 1340 goto done; 1341 } 1342 1343 m = smsc_newbuf(); 1344 if (m == NULL) { 1345 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1346 ifp->if_ierrors++; 1347 goto done; 1348 } 1349 1350 m_set_rcvif(m, ifp); 1351 m->m_pkthdr.len = m->m_len = pktlen; 1352 m->m_flags |= M_HASFCS; 1353 m_adj(m, ETHER_ALIGN); 1354 1355 KASSERT(m->m_len < MCLBYTES); 1356 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1357 1358 /* Check if RX TCP/UDP checksumming is being offloaded */ 1359 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1360 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1361 struct ether_header *eh; 1362 1363 eh = mtod(m, struct ether_header *); 1364 1365 /* Remove the extra 2 bytes of the csum */ 1366 m_adj(m, -2); 1367 1368 /* 1369 * The checksum appears to be simplistically calculated 1370 * over the udp/tcp header and data up to the end of the 1371 * eth frame. Which means if the eth frame is padded 1372 * the csum calculation is incorrectly performed over 1373 * the padding bytes as well. Therefore to be safe we 1374 * ignore the H/W csum on frames less than or equal to 1375 * 64 bytes. 1376 * 1377 * Ignore H/W csum for non-IPv4 packets. 1378 */ 1379 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1380 be16toh(eh->ether_type), pktlen); 1381 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1382 pktlen > ETHER_MIN_LEN) { 1383 1384 m->m_pkthdr.csum_flags |= 1385 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1386 1387 /* 1388 * Copy the TCP/UDP checksum from the last 2 1389 * bytes of the transfer and put in the 1390 * csum_data field. 1391 */ 1392 memcpy(&m->m_pkthdr.csum_data, 1393 buf + pktlen - 2, 2); 1394 /* 1395 * The data is copied in network order, but the 1396 * csum algorithm in the kernel expects it to be 1397 * in host network order. 1398 */ 1399 m->m_pkthdr.csum_data = 1400 ntohs(m->m_pkthdr.csum_data); 1401 smsc_dbg_printf(sc, 1402 "RX checksum offloaded (0x%04x)\n", 1403 m->m_pkthdr.csum_data); 1404 } 1405 } 1406 1407 /* round up to next longword */ 1408 pktlen = (pktlen + 3) & ~0x3; 1409 1410 /* total_len does not include the padding */ 1411 if (pktlen > total_len) 1412 pktlen = total_len; 1413 1414 buf += pktlen; 1415 total_len -= pktlen; 1416 1417 /* push the packet up */ 1418 s = splnet(); 1419 if_percpuq_enqueue(ifp->if_percpuq, m); 1420 splx(s); 1421 } 1422 1423 done: 1424 /* Setup new transfer. */ 1425 usbd_setup_xfer(xfer, c, c->sc_buf, sc->sc_bufsz, USBD_SHORT_XFER_OK, 1426 USBD_NO_TIMEOUT, smsc_rxeof); 1427 usbd_transfer(xfer); 1428 1429 return; 1430 } 1431 1432 void 1433 smsc_txeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 1434 { 1435 struct smsc_softc *sc; 1436 struct smsc_chain *c; 1437 struct ifnet *ifp; 1438 int s; 1439 1440 c = priv; 1441 sc = c->sc_sc; 1442 ifp = &sc->sc_ec.ec_if; 1443 1444 if (sc->sc_dying) 1445 return; 1446 1447 s = splnet(); 1448 1449 ifp->if_timer = 0; 1450 ifp->if_flags &= ~IFF_OACTIVE; 1451 1452 if (status != USBD_NORMAL_COMPLETION) { 1453 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1454 splx(s); 1455 return; 1456 } 1457 ifp->if_oerrors++; 1458 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1459 usbd_errstr(status)); 1460 if (status == USBD_STALLED) 1461 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1462 splx(s); 1463 return; 1464 } 1465 ifp->if_opackets++; 1466 1467 m_freem(c->sc_mbuf); 1468 c->sc_mbuf = NULL; 1469 1470 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1471 smsc_start(ifp); 1472 1473 splx(s); 1474 } 1475 1476 int 1477 smsc_tx_list_init(struct smsc_softc *sc) 1478 { 1479 struct smsc_cdata *cd; 1480 struct smsc_chain *c; 1481 int i; 1482 1483 cd = &sc->sc_cdata; 1484 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1485 c = &cd->tx_chain[i]; 1486 c->sc_sc = sc; 1487 c->sc_idx = i; 1488 c->sc_mbuf = NULL; 1489 if (c->sc_xfer == NULL) { 1490 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_TX], 1491 sc->sc_bufsz, USBD_FORCE_SHORT_XFER, 0, 1492 &c->sc_xfer); 1493 if (error) 1494 return EIO; 1495 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1496 } 1497 } 1498 1499 return 0; 1500 } 1501 1502 int 1503 smsc_rx_list_init(struct smsc_softc *sc) 1504 { 1505 struct smsc_cdata *cd; 1506 struct smsc_chain *c; 1507 int i; 1508 1509 cd = &sc->sc_cdata; 1510 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1511 c = &cd->rx_chain[i]; 1512 c->sc_sc = sc; 1513 c->sc_idx = i; 1514 c->sc_mbuf = NULL; 1515 if (c->sc_xfer == NULL) { 1516 int error = usbd_create_xfer(sc->sc_ep[SMSC_ENDPT_RX], 1517 sc->sc_bufsz, 0, 0, &c->sc_xfer); 1518 if (error) 1519 return error; 1520 c->sc_buf = usbd_get_buffer(c->sc_xfer); 1521 } 1522 } 1523 1524 return 0; 1525 } 1526 1527 struct mbuf * 1528 smsc_newbuf(void) 1529 { 1530 struct mbuf *m; 1531 1532 MGETHDR(m, M_DONTWAIT, MT_DATA); 1533 if (m == NULL) 1534 return NULL; 1535 1536 MCLGET(m, M_DONTWAIT); 1537 if (!(m->m_flags & M_EXT)) { 1538 m_freem(m); 1539 return NULL; 1540 } 1541 1542 return m; 1543 } 1544 1545 int 1546 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1547 { 1548 struct ifnet *ifp = &sc->sc_ec.ec_if; 1549 struct smsc_chain *c; 1550 usbd_status err; 1551 uint32_t txhdr; 1552 uint32_t frm_len = 0; 1553 1554 c = &sc->sc_cdata.tx_chain[idx]; 1555 1556 /* 1557 * Each frame is prefixed with two 32-bit values describing the 1558 * length of the packet and buffer. 1559 */ 1560 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1561 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1562 txhdr = htole32(txhdr); 1563 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1564 1565 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1566 txhdr = htole32(txhdr); 1567 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1568 1569 frm_len += 8; 1570 1571 /* Next copy in the actual packet */ 1572 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1573 frm_len += m->m_pkthdr.len; 1574 1575 c->sc_mbuf = m; 1576 1577 usbd_setup_xfer(c->sc_xfer, c, c->sc_buf, frm_len, 1578 USBD_FORCE_SHORT_XFER, 10000, smsc_txeof); 1579 1580 err = usbd_transfer(c->sc_xfer); 1581 /* XXXNH get task to stop interface */ 1582 if (err != USBD_IN_PROGRESS) { 1583 smsc_stop(ifp, 0); 1584 return EIO; 1585 } 1586 1587 sc->sc_cdata.tx_cnt++; 1588 1589 return 0; 1590 } 1591
Indexes created Thu Oct 02 01:09:59 GMT 2025