if_smsc.c revision 1.12.2.2
1 /* $NetBSD: if_smsc.c,v 1.12.2.2 2014/08/10 06:54:58 tls 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_inet.h" 65 #endif 66 67 #include <sys/param.h> 68 #include <sys/bus.h> 69 #include <sys/systm.h> 70 #include <sys/sockio.h> 71 #include <sys/mbuf.h> 72 #include <sys/mutex.h> 73 #include <sys/kernel.h> 74 #include <sys/proc.h> 75 #include <sys/socket.h> 76 77 #include <sys/device.h> 78 79 #include <sys/rnd.h> 80 81 #include <net/if.h> 82 #include <net/if_dl.h> 83 #include <net/if_media.h> 84 #include <net/if_ether.h> 85 86 #include <net/bpf.h> 87 88 #ifdef INET 89 #include <netinet/in.h> 90 #include <netinet/if_inarp.h> 91 #endif 92 93 #include <dev/mii/mii.h> 94 #include <dev/mii/miivar.h> 95 96 #include <dev/usb/usb.h> 97 #include <dev/usb/usbdi.h> 98 #include <dev/usb/usbdi_util.h> 99 #include <dev/usb/usbdivar.h> 100 #include <dev/usb/usbdevs.h> 101 102 #include <dev/usb/if_smscreg.h> 103 #include <dev/usb/if_smscvar.h> 104 105 #include "ioconf.h" 106 107 #ifdef USB_DEBUG 108 int smsc_debug = 0; 109 #endif 110 111 #define ETHER_ALIGN 2 112 /* 113 * Various supported device vendors/products. 114 */ 115 static const struct usb_devno smsc_devs[] = { 116 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN89530 }, 117 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9530 }, 118 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_LAN9730 }, 119 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500 }, 120 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A }, 121 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_ALT }, 122 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_HAL }, 123 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500A_SAL10 }, 124 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_ALT }, 125 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9500_SAL10 }, 126 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505 }, 127 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A }, 128 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_HAL }, 129 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505A_SAL10 }, 130 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9505_SAL10 }, 131 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14 }, 132 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_ALT }, 133 { USB_VENDOR_SMSC, USB_PRODUCT_SMSC_SMSC9512_14_SAL10 } 134 }; 135 136 #ifdef USB_DEBUG 137 #define smsc_dbg_printf(sc, fmt, args...) \ 138 do { \ 139 if (smsc_debug > 0) \ 140 printf("debug: " fmt, ##args); \ 141 } while(0) 142 #else 143 #define smsc_dbg_printf(sc, fmt, args...) 144 #endif 145 146 #define smsc_warn_printf(sc, fmt, args...) \ 147 printf("%s: warning: " fmt, device_xname((sc)->sc_dev), ##args) 148 149 #define smsc_err_printf(sc, fmt, args...) \ 150 printf("%s: error: " fmt, device_xname((sc)->sc_dev), ##args) 151 152 /* Function declarations */ 153 int smsc_chip_init(struct smsc_softc *); 154 void smsc_setmulti(struct smsc_softc *); 155 int smsc_setmacaddress(struct smsc_softc *, const uint8_t *); 156 157 int smsc_match(device_t, cfdata_t, void *); 158 void smsc_attach(device_t, device_t, void *); 159 int smsc_detach(device_t, int); 160 int smsc_activate(device_t, enum devact); 161 162 int smsc_init(struct ifnet *); 163 void smsc_start(struct ifnet *); 164 int smsc_ioctl(struct ifnet *, u_long, void *); 165 void smsc_stop(struct ifnet *, int); 166 167 void smsc_reset(struct smsc_softc *); 168 struct mbuf *smsc_newbuf(void); 169 170 void smsc_tick(void *); 171 void smsc_tick_task(void *); 172 void smsc_miibus_statchg(struct ifnet *); 173 int smsc_miibus_readreg(device_t, int, int); 174 void smsc_miibus_writereg(device_t, int, int, int); 175 int smsc_ifmedia_upd(struct ifnet *); 176 void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 177 void smsc_lock_mii(struct smsc_softc *); 178 void smsc_unlock_mii(struct smsc_softc *); 179 180 int smsc_tx_list_init(struct smsc_softc *); 181 int smsc_rx_list_init(struct smsc_softc *); 182 int smsc_encap(struct smsc_softc *, struct mbuf *, int); 183 void smsc_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 184 void smsc_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 185 186 int smsc_read_reg(struct smsc_softc *, uint32_t, uint32_t *); 187 int smsc_write_reg(struct smsc_softc *, uint32_t, uint32_t); 188 int smsc_wait_for_bits(struct smsc_softc *, uint32_t, uint32_t); 189 int smsc_sethwcsum(struct smsc_softc *); 190 191 CFATTACH_DECL_NEW(usmsc, sizeof(struct smsc_softc), smsc_match, smsc_attach, 192 smsc_detach, smsc_activate); 193 194 int 195 smsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data) 196 { 197 usb_device_request_t req; 198 uint32_t buf; 199 usbd_status err; 200 201 req.bmRequestType = UT_READ_VENDOR_DEVICE; 202 req.bRequest = SMSC_UR_READ_REG; 203 USETW(req.wValue, 0); 204 USETW(req.wIndex, off); 205 USETW(req.wLength, 4); 206 207 err = usbd_do_request(sc->sc_udev, &req, &buf); 208 if (err != 0) 209 smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off); 210 211 *data = le32toh(buf); 212 213 return (err); 214 } 215 216 int 217 smsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data) 218 { 219 usb_device_request_t req; 220 uint32_t buf; 221 usbd_status err; 222 223 buf = htole32(data); 224 225 req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 226 req.bRequest = SMSC_UR_WRITE_REG; 227 USETW(req.wValue, 0); 228 USETW(req.wIndex, off); 229 USETW(req.wLength, 4); 230 231 err = usbd_do_request(sc->sc_udev, &req, &buf); 232 if (err != 0) 233 smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off); 234 235 return (err); 236 } 237 238 int 239 smsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits) 240 { 241 uint32_t val; 242 int err, i; 243 244 for (i = 0; i < 100; i++) { 245 if ((err = smsc_read_reg(sc, reg, &val)) != 0) 246 return (err); 247 if (!(val & bits)) 248 return (0); 249 DELAY(5); 250 } 251 252 return (1); 253 } 254 255 int 256 smsc_miibus_readreg(device_t dev, int phy, int reg) 257 { 258 struct smsc_softc *sc = device_private(dev); 259 uint32_t addr; 260 uint32_t val = 0; 261 262 smsc_lock_mii(sc); 263 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 264 smsc_warn_printf(sc, "MII is busy\n"); 265 goto done; 266 } 267 268 addr = (phy << 11) | (reg << 6) | SMSC_MII_READ; 269 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 270 271 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 272 smsc_warn_printf(sc, "MII read timeout\n"); 273 274 smsc_read_reg(sc, SMSC_MII_DATA, &val); 275 276 done: 277 smsc_unlock_mii(sc); 278 279 return (val & 0xFFFF); 280 } 281 282 void 283 smsc_miibus_writereg(device_t dev, int phy, int reg, int val) 284 { 285 struct smsc_softc *sc = device_private(dev); 286 uint32_t addr; 287 288 if (sc->sc_phyno != phy) 289 return; 290 291 smsc_lock_mii(sc); 292 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 293 smsc_warn_printf(sc, "MII is busy\n"); 294 smsc_unlock_mii(sc); 295 return; 296 } 297 298 smsc_write_reg(sc, SMSC_MII_DATA, val); 299 300 addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE; 301 smsc_write_reg(sc, SMSC_MII_ADDR, addr); 302 smsc_unlock_mii(sc); 303 304 if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 305 smsc_warn_printf(sc, "MII write timeout\n"); 306 } 307 308 void 309 smsc_miibus_statchg(struct ifnet *ifp) 310 { 311 struct smsc_softc *sc = ifp->if_softc; 312 struct mii_data *mii = &sc->sc_mii; 313 int err; 314 uint32_t flow; 315 uint32_t afc_cfg; 316 317 if (mii == NULL || ifp == NULL || 318 (ifp->if_flags & IFF_RUNNING) == 0) 319 return; 320 321 /* Use the MII status to determine link status */ 322 sc->sc_flags &= ~SMSC_FLAG_LINK; 323 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 324 (IFM_ACTIVE | IFM_AVALID)) { 325 switch (IFM_SUBTYPE(mii->mii_media_active)) { 326 case IFM_10_T: 327 case IFM_100_TX: 328 sc->sc_flags |= SMSC_FLAG_LINK; 329 break; 330 case IFM_1000_T: 331 /* Gigabit ethernet not supported by chipset */ 332 break; 333 default: 334 break; 335 } 336 } 337 338 /* Lost link, do nothing. */ 339 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 340 smsc_dbg_printf(sc, "link flag not set\n"); 341 return; 342 } 343 344 err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg); 345 if (err) { 346 smsc_warn_printf(sc, "failed to read initial AFC_CFG, " 347 "error %d\n", err); 348 return; 349 } 350 351 /* Enable/disable full duplex operation and TX/RX pause */ 352 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 353 smsc_dbg_printf(sc, "full duplex operation\n"); 354 sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN; 355 sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX; 356 357 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 358 flow = 0xffff0002; 359 else 360 flow = 0; 361 362 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 363 afc_cfg |= 0xf; 364 else 365 afc_cfg &= ~0xf; 366 367 } else { 368 smsc_dbg_printf(sc, "half duplex operation\n"); 369 sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX; 370 sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN; 371 372 flow = 0; 373 afc_cfg |= 0xf; 374 } 375 376 err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 377 err += smsc_write_reg(sc, SMSC_FLOW, flow); 378 err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg); 379 if (err) 380 smsc_warn_printf(sc, "media change failed, error %d\n", err); 381 } 382 383 int 384 smsc_ifmedia_upd(struct ifnet *ifp) 385 { 386 struct smsc_softc *sc = ifp->if_softc; 387 struct mii_data *mii = &sc->sc_mii; 388 int err; 389 390 if (mii->mii_instance) { 391 struct mii_softc *miisc; 392 393 LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 394 mii_phy_reset(miisc); 395 } 396 err = mii_mediachg(mii); 397 return (err); 398 } 399 400 void 401 smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 402 { 403 struct smsc_softc *sc = ifp->if_softc; 404 struct mii_data *mii = &sc->sc_mii; 405 406 mii_pollstat(mii); 407 408 ifmr->ifm_active = mii->mii_media_active; 409 ifmr->ifm_status = mii->mii_media_status; 410 } 411 412 static inline uint32_t 413 smsc_hash(uint8_t addr[ETHER_ADDR_LEN]) 414 { 415 return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 416 } 417 418 void 419 smsc_setmulti(struct smsc_softc *sc) 420 { 421 struct ifnet *ifp = &sc->sc_ec.ec_if; 422 struct ether_multi *enm; 423 struct ether_multistep step; 424 uint32_t hashtbl[2] = { 0, 0 }; 425 uint32_t hash; 426 427 if (sc->sc_dying) 428 return; 429 430 if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 431 allmulti: 432 smsc_dbg_printf(sc, "receive all multicast enabled\n"); 433 sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 434 sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 435 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 436 return; 437 } else { 438 sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 439 sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 440 } 441 442 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 443 while (enm != NULL) { 444 if (memcmp(enm->enm_addrlo, enm->enm_addrhi, 445 ETHER_ADDR_LEN) != 0) 446 goto allmulti; 447 448 hash = smsc_hash(enm->enm_addrlo); 449 hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 450 ETHER_NEXT_MULTI(step, enm); 451 } 452 453 /* Debug */ 454 if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) { 455 smsc_dbg_printf(sc, "receive select group of macs\n"); 456 } else { 457 smsc_dbg_printf(sc, "receive own packets only\n"); 458 } 459 460 /* Write the hash table and mac control registers */ 461 ifp->if_flags &= ~IFF_ALLMULTI; 462 smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 463 smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 464 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 465 } 466 467 int 468 smsc_sethwcsum(struct smsc_softc *sc) 469 { 470 struct ifnet *ifp = &sc->sc_ec.ec_if; 471 uint32_t val; 472 int err; 473 474 if (!ifp) 475 return EIO; 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 *sc = ifp->if_softc; 546 struct smsc_chain *c; 547 usbd_status err; 548 int s, i; 549 550 if (sc->sc_dying) 551 return EIO; 552 553 s = splnet(); 554 555 /* Cancel pending I/O */ 556 if (ifp->if_flags & IFF_RUNNING) 557 smsc_stop(ifp, 1); 558 559 /* Reset the ethernet interface. */ 560 smsc_reset(sc); 561 562 /* Init RX ring. */ 563 if (smsc_rx_list_init(sc) == ENOBUFS) { 564 aprint_error_dev(sc->sc_dev, "rx list init failed\n"); 565 splx(s); 566 return EIO; 567 } 568 569 /* Init TX ring. */ 570 if (smsc_tx_list_init(sc) == ENOBUFS) { 571 aprint_error_dev(sc->sc_dev, "tx list init failed\n"); 572 splx(s); 573 return EIO; 574 } 575 576 /* Load the multicast filter. */ 577 smsc_setmulti(sc); 578 579 /* TCP/UDP checksum offload engines. */ 580 smsc_sethwcsum(sc); 581 582 /* Open RX and TX pipes. */ 583 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_RX], 584 USBD_EXCLUSIVE_USE, &sc->sc_ep[SMSC_ENDPT_RX]); 585 if (err) { 586 printf("%s: open rx pipe failed: %s\n", 587 device_xname(sc->sc_dev), usbd_errstr(err)); 588 splx(s); 589 return EIO; 590 } 591 592 err = usbd_open_pipe(sc->sc_iface, sc->sc_ed[SMSC_ENDPT_TX], 593 USBD_EXCLUSIVE_USE, &sc->sc_ep[SMSC_ENDPT_TX]); 594 if (err) { 595 printf("%s: open tx pipe failed: %s\n", 596 device_xname(sc->sc_dev), usbd_errstr(err)); 597 splx(s); 598 return EIO; 599 } 600 601 /* Start up the receive pipe. */ 602 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 603 c = &sc->sc_cdata.rx_chain[i]; 604 usbd_setup_xfer(c->sc_xfer, sc->sc_ep[SMSC_ENDPT_RX], 605 c, c->sc_buf, sc->sc_bufsz, 606 USBD_SHORT_XFER_OK | USBD_NO_COPY, 607 USBD_NO_TIMEOUT, smsc_rxeof); 608 usbd_transfer(c->sc_xfer); 609 } 610 611 /* Indicate we are up and running. */ 612 ifp->if_flags |= IFF_RUNNING; 613 ifp->if_flags &= ~IFF_OACTIVE; 614 615 splx(s); 616 617 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 618 619 return 0; 620 } 621 622 void 623 smsc_start(struct ifnet *ifp) 624 { 625 struct smsc_softc *sc = ifp->if_softc; 626 struct mbuf *m_head = NULL; 627 628 /* Don't send anything if there is no link or controller is busy. */ 629 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 630 return; 631 } 632 633 if ((ifp->if_flags & (IFF_OACTIVE|IFF_RUNNING)) != IFF_RUNNING) 634 return; 635 636 IFQ_POLL(&ifp->if_snd, m_head); 637 if (m_head == NULL) 638 return; 639 640 if (smsc_encap(sc, m_head, 0)) { 641 ifp->if_flags |= IFF_OACTIVE; 642 return; 643 } 644 IFQ_DEQUEUE(&ifp->if_snd, m_head); 645 646 bpf_mtap(ifp, m_head); 647 648 ifp->if_flags |= IFF_OACTIVE; 649 650 /* 651 * Set a timeout in case the chip goes out to lunch. 652 */ 653 ifp->if_timer = 5; 654 } 655 656 void 657 smsc_tick(void *xsc) 658 { 659 struct smsc_softc *sc = xsc; 660 661 if (sc == NULL) 662 return; 663 664 if (sc->sc_dying) 665 return; 666 667 usb_add_task(sc->sc_udev, &sc->sc_tick_task, USB_TASKQ_DRIVER); 668 } 669 670 void 671 smsc_stop(struct ifnet *ifp, int disable) 672 { 673 usbd_status err; 674 struct smsc_softc *sc = ifp->if_softc; 675 int i; 676 677 smsc_reset(sc); 678 679 ifp = &sc->sc_ec.ec_if; 680 ifp->if_timer = 0; 681 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 682 683 callout_stop(&sc->sc_stat_ch); 684 685 /* Stop transfers. */ 686 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) { 687 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 688 if (err) { 689 printf("%s: abort rx pipe failed: %s\n", 690 device_xname(sc->sc_dev), usbd_errstr(err)); 691 } 692 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 693 if (err) { 694 printf("%s: close rx pipe failed: %s\n", 695 device_xname(sc->sc_dev), usbd_errstr(err)); 696 } 697 sc->sc_ep[SMSC_ENDPT_RX] = NULL; 698 } 699 700 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) { 701 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 702 if (err) { 703 printf("%s: abort tx pipe failed: %s\n", 704 device_xname(sc->sc_dev), usbd_errstr(err)); 705 } 706 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 707 if (err) { 708 printf("%s: close tx pipe failed: %s\n", 709 device_xname(sc->sc_dev), usbd_errstr(err)); 710 } 711 sc->sc_ep[SMSC_ENDPT_TX] = NULL; 712 } 713 714 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) { 715 err = usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 716 if (err) { 717 printf("%s: abort intr pipe failed: %s\n", 718 device_xname(sc->sc_dev), usbd_errstr(err)); 719 } 720 err = usbd_close_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 721 if (err) { 722 printf("%s: close intr pipe failed: %s\n", 723 device_xname(sc->sc_dev), usbd_errstr(err)); 724 } 725 sc->sc_ep[SMSC_ENDPT_INTR] = NULL; 726 } 727 728 /* Free RX resources. */ 729 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 730 if (sc->sc_cdata.rx_chain[i].sc_mbuf != NULL) { 731 m_freem(sc->sc_cdata.rx_chain[i].sc_mbuf); 732 sc->sc_cdata.rx_chain[i].sc_mbuf = NULL; 733 } 734 if (sc->sc_cdata.rx_chain[i].sc_xfer != NULL) { 735 usbd_free_xfer(sc->sc_cdata.rx_chain[i].sc_xfer); 736 sc->sc_cdata.rx_chain[i].sc_xfer = NULL; 737 } 738 } 739 740 /* Free TX resources. */ 741 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 742 if (sc->sc_cdata.tx_chain[i].sc_mbuf != NULL) { 743 m_freem(sc->sc_cdata.tx_chain[i].sc_mbuf); 744 sc->sc_cdata.tx_chain[i].sc_mbuf = NULL; 745 } 746 if (sc->sc_cdata.tx_chain[i].sc_xfer != NULL) { 747 usbd_free_xfer(sc->sc_cdata.tx_chain[i].sc_xfer); 748 sc->sc_cdata.tx_chain[i].sc_xfer = NULL; 749 } 750 } 751 } 752 753 int 754 smsc_chip_init(struct smsc_softc *sc) 755 { 756 int err; 757 uint32_t reg_val; 758 int burst_cap; 759 760 /* Enter H/W config mode */ 761 smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 762 763 if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, 764 SMSC_HW_CFG_LRST)) != 0) { 765 smsc_warn_printf(sc, "timed-out waiting for reset to " 766 "complete\n"); 767 goto init_failed; 768 } 769 770 /* Reset the PHY */ 771 smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 772 773 if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, 774 SMSC_PM_CTRL_PHY_RST) != 0)) { 775 smsc_warn_printf(sc, "timed-out waiting for phy reset to " 776 "complete\n"); 777 goto init_failed; 778 } 779 usbd_delay_ms(sc->sc_udev, 40); 780 781 /* Set the mac address */ 782 struct ifnet *ifp = &sc->sc_ec.ec_if; 783 const char *eaddr = CLLADDR(ifp->if_sadl); 784 if ((err = smsc_setmacaddress(sc, eaddr)) != 0) { 785 smsc_warn_printf(sc, "failed to set the MAC address\n"); 786 goto init_failed; 787 } 788 789 /* 790 * Don't know what the HW_CFG_BIR bit is, but following the reset 791 * sequence as used in the Linux driver. 792 */ 793 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 794 smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 795 goto init_failed; 796 } 797 reg_val |= SMSC_HW_CFG_BIR; 798 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 799 800 /* 801 * There is a so called 'turbo mode' that the linux driver supports, it 802 * seems to allow you to jam multiple frames per Rx transaction. 803 * By default this driver supports that and therefore allows multiple 804 * frames per USB transfer. 805 * 806 * The xfer buffer size needs to reflect this as well, therefore based 807 * on the calculations in the Linux driver the RX bufsize is set to 808 * 18944, 809 * bufsz = (16 * 1024 + 5 * 512) 810 * 811 * Burst capability is the number of URBs that can be in a burst of 812 * data/ethernet frames. 813 */ 814 815 if (sc->sc_udev->speed == USB_SPEED_HIGH) 816 burst_cap = 37; 817 else 818 burst_cap = 128; 819 820 smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 821 822 /* Set the default bulk in delay (magic value from Linux driver) */ 823 smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 824 825 /* 826 * Initialise the RX interface 827 */ 828 if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 829 smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", 830 err); 831 goto init_failed; 832 } 833 834 /* 835 * The following settings are used for 'turbo mode', a.k.a multiple 836 * frames per Rx transaction (again info taken form Linux driver). 837 */ 838 reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 839 840 /* 841 * set Rx data offset to ETHER_ALIGN which will make the IP header 842 * align on a word boundary. 843 */ 844 reg_val |= ETHER_ALIGN << SMSC_HW_CFG_RXDOFF_SHIFT; 845 846 smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 847 848 /* Clear the status register ? */ 849 smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 850 851 /* Read and display the revision register */ 852 if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 853 smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 854 goto init_failed; 855 } 856 857 /* GPIO/LED setup */ 858 reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 859 SMSC_LED_GPIO_CFG_FDX_LED; 860 smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 861 862 /* 863 * Initialise the TX interface 864 */ 865 smsc_write_reg(sc, SMSC_FLOW, 0); 866 867 smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 868 869 /* Read the current MAC configuration */ 870 if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 871 smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 872 goto init_failed; 873 } 874 875 /* disable pad stripping, collides with checksum offload */ 876 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PADSTR; 877 878 /* Vlan */ 879 smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 880 881 /* 882 * Start TX 883 */ 884 sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 885 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 886 smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 887 888 /* 889 * Start RX 890 */ 891 sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 892 smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 893 894 return (0); 895 896 init_failed: 897 smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 898 return (err); 899 } 900 901 int 902 smsc_ioctl(struct ifnet *ifp, u_long cmd, void *data) 903 { 904 struct smsc_softc *sc = ifp->if_softc; 905 struct ifreq /*const*/ *ifr = data; 906 int s, error = 0; 907 908 if (sc->sc_dying) 909 return EIO; 910 911 s = splnet(); 912 913 switch(cmd) { 914 case SIOCSIFFLAGS: 915 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 916 break; 917 918 switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { 919 case IFF_RUNNING: 920 smsc_stop(ifp, 1); 921 break; 922 case IFF_UP: 923 smsc_init(ifp); 924 break; 925 case IFF_UP | IFF_RUNNING: 926 if (ifp->if_flags & IFF_PROMISC && 927 !(sc->sc_if_flags & IFF_PROMISC)) { 928 sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 929 smsc_write_reg(sc, SMSC_MAC_CSR, 930 sc->sc_mac_csr); 931 smsc_setmulti(sc); 932 } else if (!(ifp->if_flags & IFF_PROMISC) && 933 sc->sc_if_flags & IFF_PROMISC) { 934 sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 935 smsc_write_reg(sc, SMSC_MAC_CSR, 936 sc->sc_mac_csr); 937 smsc_setmulti(sc); 938 } else { 939 smsc_init(ifp); 940 } 941 break; 942 } 943 sc->sc_if_flags = ifp->if_flags; 944 break; 945 946 case SIOCGIFMEDIA: 947 case SIOCSIFMEDIA: 948 error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, cmd); 949 break; 950 951 default: 952 if ((error = ether_ioctl(ifp, cmd, data)) != ENETRESET) 953 break; 954 955 error = 0; 956 957 if (cmd == SIOCADDMULTI || cmd == SIOCDELMULTI) 958 smsc_setmulti(sc); 959 960 } 961 splx(s); 962 963 return error; 964 } 965 966 int 967 smsc_match(device_t parent, cfdata_t match, void *aux) 968 { 969 struct usb_attach_arg *uaa = aux; 970 971 return (usb_lookup(smsc_devs, uaa->vendor, uaa->product) != NULL) ? 972 UMATCH_VENDOR_PRODUCT : UMATCH_NONE; 973 } 974 975 void 976 smsc_attach(device_t parent, device_t self, void *aux) 977 { 978 struct smsc_softc *sc = device_private(self); 979 struct usb_attach_arg *uaa = aux; 980 usbd_device_handle dev = uaa->device; 981 usb_interface_descriptor_t *id; 982 usb_endpoint_descriptor_t *ed; 983 char *devinfop; 984 struct mii_data *mii; 985 struct ifnet *ifp; 986 int err, s, i; 987 uint32_t mac_h, mac_l; 988 989 sc->sc_dev = self; 990 sc->sc_udev = dev; 991 992 aprint_naive("\n"); 993 aprint_normal("\n"); 994 995 devinfop = usbd_devinfo_alloc(sc->sc_udev, 0); 996 aprint_normal_dev(self, "%s\n", devinfop); 997 usbd_devinfo_free(devinfop); 998 999 err = usbd_set_config_no(dev, SMSC_CONFIG_INDEX, 1); 1000 if (err) { 1001 aprint_error_dev(self, "failed to set configuration" 1002 ", err=%s\n", usbd_errstr(err)); 1003 return; 1004 } 1005 /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1006 usb_init_task(&sc->sc_tick_task, smsc_tick_task, sc, 0); 1007 usb_init_task(&sc->sc_stop_task, (void (*)(void *))smsc_stop, sc, 0); 1008 mutex_init(&sc->sc_mii_lock, MUTEX_DEFAULT, IPL_NONE); 1009 1010 err = usbd_device2interface_handle(dev, SMSC_IFACE_IDX, &sc->sc_iface); 1011 if (err) { 1012 aprint_error_dev(self, "getting interface handle failed\n"); 1013 return; 1014 } 1015 1016 id = usbd_get_interface_descriptor(sc->sc_iface); 1017 1018 if (sc->sc_udev->speed >= USB_SPEED_HIGH) 1019 sc->sc_bufsz = SMSC_MAX_BUFSZ; 1020 else 1021 sc->sc_bufsz = SMSC_MIN_BUFSZ; 1022 1023 /* Find endpoints. */ 1024 for (i = 0; i < id->bNumEndpoints; i++) { 1025 ed = usbd_interface2endpoint_descriptor(sc->sc_iface, i); 1026 if (!ed) { 1027 aprint_error_dev(self, "couldn't get ep %d\n", i); 1028 return; 1029 } 1030 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1031 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1032 sc->sc_ed[SMSC_ENDPT_RX] = ed->bEndpointAddress; 1033 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 1034 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 1035 sc->sc_ed[SMSC_ENDPT_TX] = ed->bEndpointAddress; 1036 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 1037 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 1038 sc->sc_ed[SMSC_ENDPT_INTR] = ed->bEndpointAddress; 1039 } 1040 } 1041 1042 s = splnet(); 1043 1044 ifp = &sc->sc_ec.ec_if; 1045 ifp->if_softc = sc; 1046 strlcpy(ifp->if_xname, device_xname(sc->sc_dev), IFNAMSIZ); 1047 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1048 ifp->if_init = smsc_init; 1049 ifp->if_ioctl = smsc_ioctl; 1050 ifp->if_start = smsc_start; 1051 ifp->if_stop = smsc_stop; 1052 1053 #ifdef notyet 1054 /* 1055 * We can do TCPv4, and UDPv4 checksums in hardware. 1056 */ 1057 ifp->if_capabilities |= 1058 /*IFCAP_CSUM_TCPv4_Tx |*/ IFCAP_CSUM_TCPv4_Rx | 1059 /*IFCAP_CSUM_UDPv4_Tx |*/ IFCAP_CSUM_UDPv4_Rx; 1060 #endif 1061 1062 sc->sc_ec.ec_capabilities = ETHERCAP_VLAN_MTU; 1063 1064 /* Setup some of the basics */ 1065 sc->sc_phyno = 1; 1066 1067 /* 1068 * Attempt to get the mac address, if an EEPROM is not attached this 1069 * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1070 * address based on urandom. 1071 */ 1072 memset(sc->sc_enaddr, 0xff, ETHER_ADDR_LEN); 1073 1074 prop_dictionary_t dict = device_properties(self); 1075 prop_data_t eaprop = prop_dictionary_get(dict, "mac-address"); 1076 1077 if (eaprop != NULL) { 1078 KASSERT(prop_object_type(eaprop) == PROP_TYPE_DATA); 1079 KASSERT(prop_data_size(eaprop) == ETHER_ADDR_LEN); 1080 memcpy(sc->sc_enaddr, prop_data_data_nocopy(eaprop), 1081 ETHER_ADDR_LEN); 1082 } else 1083 /* Check if there is already a MAC address in the register */ 1084 if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1085 (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1086 sc->sc_enaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1087 sc->sc_enaddr[4] = (uint8_t)((mac_h) & 0xff); 1088 sc->sc_enaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1089 sc->sc_enaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1090 sc->sc_enaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1091 sc->sc_enaddr[0] = (uint8_t)((mac_l) & 0xff); 1092 } 1093 1094 aprint_normal_dev(self, " Ethernet address %s\n", ether_sprintf(sc->sc_enaddr)); 1095 1096 IFQ_SET_READY(&ifp->if_snd); 1097 1098 /* Initialize MII/media info. */ 1099 mii = &sc->sc_mii; 1100 mii->mii_ifp = ifp; 1101 mii->mii_readreg = smsc_miibus_readreg; 1102 mii->mii_writereg = smsc_miibus_writereg; 1103 mii->mii_statchg = smsc_miibus_statchg; 1104 mii->mii_flags = MIIF_AUTOTSLEEP; 1105 sc->sc_ec.ec_mii = mii; 1106 ifmedia_init(&mii->mii_media, 0, smsc_ifmedia_upd, smsc_ifmedia_sts); 1107 mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); 1108 1109 if (LIST_FIRST(&mii->mii_phys) == NULL) { 1110 ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_NONE, 0, NULL); 1111 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_NONE); 1112 } else 1113 ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); 1114 1115 if_attach(ifp); 1116 ether_ifattach(ifp, sc->sc_enaddr); 1117 1118 rnd_attach_source(&sc->sc_rnd_source, device_xname(sc->sc_dev), 1119 RND_TYPE_NET, RND_FLAG_DEFAULT); 1120 1121 callout_init(&sc->sc_stat_ch, 0); 1122 1123 splx(s); 1124 1125 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 1126 } 1127 1128 int 1129 smsc_detach(device_t self, int flags) 1130 { 1131 struct smsc_softc *sc = device_private(self); 1132 struct ifnet *ifp = &sc->sc_ec.ec_if; 1133 int s; 1134 1135 callout_stop(&sc->sc_stat_ch); 1136 1137 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL) 1138 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_TX]); 1139 if (sc->sc_ep[SMSC_ENDPT_RX] != NULL) 1140 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_RX]); 1141 if (sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1142 usbd_abort_pipe(sc->sc_ep[SMSC_ENDPT_INTR]); 1143 1144 /* 1145 * Remove any pending tasks. They cannot be executing because they run 1146 * in the same thread as detach. 1147 */ 1148 usb_rem_task(sc->sc_udev, &sc->sc_tick_task); 1149 usb_rem_task(sc->sc_udev, &sc->sc_stop_task); 1150 1151 s = splusb(); 1152 1153 if (--sc->sc_refcnt >= 0) { 1154 /* Wait for processes to go away */ 1155 usb_detach_waitold(sc->sc_dev); 1156 } 1157 1158 if (ifp->if_flags & IFF_RUNNING) 1159 smsc_stop(ifp ,1); 1160 1161 rnd_detach_source(&sc->sc_rnd_source); 1162 mii_detach(&sc->sc_mii, MII_PHY_ANY, MII_OFFSET_ANY); 1163 ifmedia_delete_instance(&sc->sc_mii.mii_media, IFM_INST_ANY); 1164 if (ifp->if_softc != NULL) { 1165 ether_ifdetach(ifp); 1166 if_detach(ifp); 1167 } 1168 1169 #ifdef DIAGNOSTIC 1170 if (sc->sc_ep[SMSC_ENDPT_TX] != NULL || 1171 sc->sc_ep[SMSC_ENDPT_RX] != NULL || 1172 sc->sc_ep[SMSC_ENDPT_INTR] != NULL) 1173 printf("%s: detach has active endpoints\n", 1174 device_xname(sc->sc_dev)); 1175 #endif 1176 1177 if (--sc->sc_refcnt >= 0) { 1178 /* Wait for processes to go away. */ 1179 usb_detach_waitold(sc->sc_dev); 1180 } 1181 splx(s); 1182 1183 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1184 1185 mutex_destroy(&sc->sc_mii_lock); 1186 1187 return (0); 1188 } 1189 1190 void 1191 smsc_tick_task(void *xsc) 1192 { 1193 int s; 1194 struct smsc_softc *sc = xsc; 1195 struct ifnet *ifp; 1196 struct mii_data *mii; 1197 1198 if (sc == NULL) 1199 return; 1200 1201 if (sc->sc_dying) 1202 return; 1203 ifp = &sc->sc_ec.ec_if; 1204 mii = &sc->sc_mii; 1205 if (mii == NULL) 1206 return; 1207 1208 s = splnet(); 1209 1210 mii_tick(mii); 1211 if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) 1212 smsc_miibus_statchg(ifp); 1213 callout_reset(&sc->sc_stat_ch, hz, smsc_tick, sc); 1214 1215 splx(s); 1216 } 1217 1218 int 1219 smsc_activate(device_t self, enum devact act) 1220 { 1221 struct smsc_softc *sc = device_private(self); 1222 1223 switch (act) { 1224 case DVACT_DEACTIVATE: 1225 if_deactivate(&sc->sc_ec.ec_if); 1226 sc->sc_dying = 1; 1227 return 0; 1228 default: 1229 return EOPNOTSUPP; 1230 } 1231 return (0); 1232 } 1233 1234 void 1235 smsc_lock_mii(struct smsc_softc *sc) 1236 { 1237 sc->sc_refcnt++; 1238 mutex_enter(&sc->sc_mii_lock); 1239 } 1240 1241 void 1242 smsc_unlock_mii(struct smsc_softc *sc) 1243 { 1244 mutex_exit(&sc->sc_mii_lock); 1245 if (--sc->sc_refcnt < 0) 1246 usb_detach_wakeupold(sc->sc_dev); 1247 } 1248 1249 void 1250 smsc_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 1251 { 1252 struct smsc_chain *c = (struct smsc_chain *)priv; 1253 struct smsc_softc *sc = c->sc_sc; 1254 struct ifnet *ifp = &sc->sc_ec.ec_if; 1255 u_char *buf = c->sc_buf; 1256 uint32_t total_len; 1257 uint32_t rxhdr; 1258 uint16_t pktlen; 1259 struct mbuf *m; 1260 int s; 1261 1262 if (sc->sc_dying) 1263 return; 1264 1265 if (!(ifp->if_flags & IFF_RUNNING)) 1266 return; 1267 1268 if (status != USBD_NORMAL_COMPLETION) { 1269 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 1270 return; 1271 if (usbd_ratecheck(&sc->sc_rx_notice)) { 1272 printf("%s: usb errors on rx: %s\n", 1273 device_xname(sc->sc_dev), usbd_errstr(status)); 1274 } 1275 if (status == USBD_STALLED) 1276 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_RX]); 1277 goto done; 1278 } 1279 1280 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 1281 smsc_dbg_printf(sc, "xfer status total_len %d\n", total_len); 1282 1283 while (total_len != 0) { 1284 if (total_len < sizeof(rxhdr)) { 1285 smsc_dbg_printf(sc, "total_len %d < sizeof(rxhdr) %zu\n", 1286 total_len, sizeof(rxhdr)); 1287 ifp->if_ierrors++; 1288 goto done; 1289 } 1290 1291 memcpy(&rxhdr, buf, sizeof(rxhdr)); 1292 rxhdr = le32toh(rxhdr); 1293 buf += sizeof(rxhdr); 1294 total_len -= sizeof(rxhdr); 1295 1296 if (rxhdr & SMSC_RX_STAT_ERROR) { 1297 smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1298 ifp->if_ierrors++; 1299 goto done; 1300 } 1301 1302 pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1303 smsc_dbg_printf(sc, "rxeof total_len %d pktlen %d rxhdr " 1304 "0x%08x\n", total_len, pktlen, rxhdr); 1305 1306 pktlen += ETHER_ALIGN; 1307 1308 if (pktlen > MCLBYTES) { 1309 smsc_dbg_printf(sc, "pktlen %d > MCLBYTES %d\n", 1310 pktlen, MCLBYTES); 1311 ifp->if_ierrors++; 1312 goto done; 1313 } 1314 1315 if (pktlen > total_len) { 1316 smsc_dbg_printf(sc, "pktlen %d > total_len %d\n", 1317 pktlen, total_len); 1318 ifp->if_ierrors++; 1319 goto done; 1320 } 1321 1322 m = smsc_newbuf(); 1323 if (m == NULL) { 1324 smsc_dbg_printf(sc, "smc_newbuf returned NULL\n"); 1325 ifp->if_ierrors++; 1326 goto done; 1327 } 1328 1329 ifp->if_ipackets++; 1330 m->m_pkthdr.rcvif = ifp; 1331 m->m_pkthdr.len = m->m_len = pktlen; 1332 m->m_flags |= M_HASFCS; 1333 m_adj(m, ETHER_ALIGN); 1334 1335 KASSERT(m->m_len < MCLBYTES); 1336 memcpy(mtod(m, char *), buf + ETHER_ALIGN, m->m_len); 1337 1338 /* Check if RX TCP/UDP checksumming is being offloaded */ 1339 if (sc->sc_coe_ctrl & SMSC_COE_CTRL_RX_EN) { 1340 smsc_dbg_printf(sc,"RX checksum offload checking\n"); 1341 struct ether_header *eh; 1342 1343 eh = mtod(m, struct ether_header *); 1344 1345 /* Remove the extra 2 bytes of the csum */ 1346 m_adj(m, -2); 1347 1348 /* 1349 * The checksum appears to be simplistically calculated 1350 * over the udp/tcp header and data up to the end of the 1351 * eth frame. Which means if the eth frame is padded 1352 * the csum calculation is incorrectly performed over 1353 * the padding bytes as well. Therefore to be safe we 1354 * ignore the H/W csum on frames less than or equal to 1355 * 64 bytes. 1356 * 1357 * Ignore H/W csum for non-IPv4 packets. 1358 */ 1359 smsc_dbg_printf(sc,"Ethertype %02x pktlen %02x\n", 1360 be16toh(eh->ether_type), pktlen); 1361 if (be16toh(eh->ether_type) == ETHERTYPE_IP && 1362 pktlen > ETHER_MIN_LEN) { 1363 1364 m->m_pkthdr.csum_flags |= 1365 (M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_DATA); 1366 1367 /* 1368 * Copy the TCP/UDP checksum from the last 2 1369 * bytes of the transfer and put in the 1370 * csum_data field. 1371 */ 1372 memcpy(&m->m_pkthdr.csum_data, 1373 buf + pktlen - 2, 2); 1374 /* 1375 * The data is copied in network order, but the 1376 * csum algorithm in the kernel expects it to be 1377 * in host network order. 1378 */ 1379 m->m_pkthdr.csum_data = 1380 ntohs(m->m_pkthdr.csum_data); 1381 smsc_dbg_printf(sc, 1382 "RX checksum offloaded (0x%04x)\n", 1383 m->m_pkthdr.csum_data); 1384 } 1385 } 1386 1387 /* round up to next longword */ 1388 pktlen = (pktlen + 3) & ~0x3; 1389 1390 /* total_len does not include the padding */ 1391 if (pktlen > total_len) 1392 pktlen = total_len; 1393 1394 buf += pktlen; 1395 total_len -= pktlen; 1396 1397 /* push the packet up */ 1398 s = splnet(); 1399 bpf_mtap(ifp, m); 1400 ifp->if_input(ifp, m); 1401 splx(s); 1402 } 1403 1404 done: 1405 /* Setup new transfer. */ 1406 usbd_setup_xfer(xfer, sc->sc_ep[SMSC_ENDPT_RX], 1407 c, c->sc_buf, sc->sc_bufsz, 1408 USBD_SHORT_XFER_OK | USBD_NO_COPY, 1409 USBD_NO_TIMEOUT, smsc_rxeof); 1410 usbd_transfer(xfer); 1411 1412 return; 1413 } 1414 1415 void 1416 smsc_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 1417 { 1418 struct smsc_softc *sc; 1419 struct smsc_chain *c; 1420 struct ifnet *ifp; 1421 int s; 1422 1423 c = priv; 1424 sc = c->sc_sc; 1425 ifp = &sc->sc_ec.ec_if; 1426 1427 if (sc->sc_dying) 1428 return; 1429 1430 s = splnet(); 1431 1432 ifp->if_timer = 0; 1433 ifp->if_flags &= ~IFF_OACTIVE; 1434 1435 if (status != USBD_NORMAL_COMPLETION) { 1436 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 1437 splx(s); 1438 return; 1439 } 1440 ifp->if_oerrors++; 1441 printf("%s: usb error on tx: %s\n", device_xname(sc->sc_dev), 1442 usbd_errstr(status)); 1443 if (status == USBD_STALLED) 1444 usbd_clear_endpoint_stall_async(sc->sc_ep[SMSC_ENDPT_TX]); 1445 splx(s); 1446 return; 1447 } 1448 ifp->if_opackets++; 1449 1450 m_freem(c->sc_mbuf); 1451 c->sc_mbuf = NULL; 1452 1453 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 1454 smsc_start(ifp); 1455 1456 splx(s); 1457 } 1458 1459 int 1460 smsc_tx_list_init(struct smsc_softc *sc) 1461 { 1462 struct smsc_cdata *cd; 1463 struct smsc_chain *c; 1464 int i; 1465 1466 cd = &sc->sc_cdata; 1467 for (i = 0; i < SMSC_TX_LIST_CNT; i++) { 1468 c = &cd->tx_chain[i]; 1469 c->sc_sc = sc; 1470 c->sc_idx = i; 1471 c->sc_mbuf = NULL; 1472 if (c->sc_xfer == NULL) { 1473 c->sc_xfer = usbd_alloc_xfer(sc->sc_udev); 1474 if (c->sc_xfer == NULL) 1475 return (ENOBUFS); 1476 c->sc_buf = usbd_alloc_buffer(c->sc_xfer, 1477 sc->sc_bufsz); 1478 if (c->sc_buf == NULL) { 1479 usbd_free_xfer(c->sc_xfer); 1480 return (ENOBUFS); 1481 } 1482 } 1483 } 1484 1485 return (0); 1486 } 1487 1488 int 1489 smsc_rx_list_init(struct smsc_softc *sc) 1490 { 1491 struct smsc_cdata *cd; 1492 struct smsc_chain *c; 1493 int i; 1494 1495 cd = &sc->sc_cdata; 1496 for (i = 0; i < SMSC_RX_LIST_CNT; i++) { 1497 c = &cd->rx_chain[i]; 1498 c->sc_sc = sc; 1499 c->sc_idx = i; 1500 c->sc_mbuf = NULL; 1501 if (c->sc_xfer == NULL) { 1502 c->sc_xfer = usbd_alloc_xfer(sc->sc_udev); 1503 if (c->sc_xfer == NULL) 1504 return (ENOBUFS); 1505 c->sc_buf = usbd_alloc_buffer(c->sc_xfer, 1506 sc->sc_bufsz); 1507 if (c->sc_buf == NULL) { 1508 usbd_free_xfer(c->sc_xfer); 1509 return (ENOBUFS); 1510 } 1511 } 1512 } 1513 1514 return (0); 1515 } 1516 1517 struct mbuf * 1518 smsc_newbuf(void) 1519 { 1520 struct mbuf *m; 1521 1522 MGETHDR(m, M_DONTWAIT, MT_DATA); 1523 if (m == NULL) 1524 return (NULL); 1525 1526 MCLGET(m, M_DONTWAIT); 1527 if (!(m->m_flags & M_EXT)) { 1528 m_freem(m); 1529 return (NULL); 1530 } 1531 1532 return (m); 1533 } 1534 1535 int 1536 smsc_encap(struct smsc_softc *sc, struct mbuf *m, int idx) 1537 { 1538 struct ifnet *ifp = &sc->sc_ec.ec_if; 1539 struct smsc_chain *c; 1540 usbd_status err; 1541 uint32_t txhdr; 1542 uint32_t frm_len = 0; 1543 1544 c = &sc->sc_cdata.tx_chain[idx]; 1545 1546 /* 1547 * Each frame is prefixed with two 32-bit values describing the 1548 * length of the packet and buffer. 1549 */ 1550 txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1551 SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1552 txhdr = htole32(txhdr); 1553 memcpy(c->sc_buf, &txhdr, sizeof(txhdr)); 1554 1555 txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1556 txhdr = htole32(txhdr); 1557 memcpy(c->sc_buf + 4, &txhdr, sizeof(txhdr)); 1558 1559 frm_len += 8; 1560 1561 /* Next copy in the actual packet */ 1562 m_copydata(m, 0, m->m_pkthdr.len, c->sc_buf + frm_len); 1563 frm_len += m->m_pkthdr.len; 1564 1565 c->sc_mbuf = m; 1566 1567 usbd_setup_xfer(c->sc_xfer, sc->sc_ep[SMSC_ENDPT_TX], 1568 c, c->sc_buf, frm_len, USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 1569 10000, smsc_txeof); 1570 1571 err = usbd_transfer(c->sc_xfer); 1572 /* XXXNH get task to stop interface */ 1573 if (err != USBD_IN_PROGRESS) { 1574 smsc_stop(ifp, 0); 1575 return (EIO); 1576 } 1577 1578 sc->sc_cdata.tx_cnt++; 1579 1580 return (0); 1581 } 1582
Indexes created Thu Oct 02 01:09:59 GMT 2025