1239275Sgonzo/*- 2239275Sgonzo * Copyright (c) 2012 3239275Sgonzo * Ben Gray <bgray@freebsd.org>. 4239275Sgonzo * All rights reserved. 5239275Sgonzo * 6239275Sgonzo * Redistribution and use in source and binary forms, with or without 7239275Sgonzo * modification, are permitted provided that the following conditions 8239275Sgonzo * are met: 9239275Sgonzo * 1. Redistributions of source code must retain the above copyright 10239275Sgonzo * notice, this list of conditions and the following disclaimer. 11239275Sgonzo * 2. Redistributions in binary form must reproduce the above copyright 12239275Sgonzo * notice, this list of conditions and the following disclaimer in the 13239275Sgonzo * documentation and/or other materials provided with the distribution. 14239275Sgonzo * 15239275Sgonzo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16239275Sgonzo * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17239275Sgonzo * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18239275Sgonzo * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19239275Sgonzo * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20239275Sgonzo * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21239275Sgonzo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22239275Sgonzo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23239275Sgonzo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24239275Sgonzo * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25239275Sgonzo */ 26239275Sgonzo 27239275Sgonzo#include <sys/cdefs.h> 28239275Sgonzo__FBSDID("$FreeBSD: releng/11.0/sys/dev/usb/net/if_smsc.c 295608 2016-02-14 07:20:07Z hselasky $"); 29239275Sgonzo 30239275Sgonzo/* 31239275Sgonzo * SMSC LAN9xxx devices (http://www.smsc.com/) 32239275Sgonzo * 33239275Sgonzo * The LAN9500 & LAN9500A devices are stand-alone USB to Ethernet chips that 34239275Sgonzo * support USB 2.0 and 10/100 Mbps Ethernet. 35239275Sgonzo * 36239275Sgonzo * The LAN951x devices are an integrated USB hub and USB to Ethernet adapter. 37239275Sgonzo * The driver only covers the Ethernet part, the standard USB hub driver 38239275Sgonzo * supports the hub part. 39239275Sgonzo * 40239275Sgonzo * This driver is closely modelled on the Linux driver written and copyrighted 41239275Sgonzo * by SMSC. 42239275Sgonzo * 43239275Sgonzo * 44239275Sgonzo * 45239275Sgonzo * 46239275Sgonzo * H/W TCP & UDP Checksum Offloading 47239275Sgonzo * --------------------------------- 48239275Sgonzo * The chip supports both tx and rx offloading of UDP & TCP checksums, this 49239275Sgonzo * feature can be dynamically enabled/disabled. 50239275Sgonzo * 51239275Sgonzo * RX checksuming is performed across bytes after the IPv4 header to the end of 52239275Sgonzo * the Ethernet frame, this means if the frame is padded with non-zero values 53239275Sgonzo * the H/W checksum will be incorrect, however the rx code compensates for this. 54239275Sgonzo * 55239275Sgonzo * TX checksuming is more complicated, the device requires a special header to 56239275Sgonzo * be prefixed onto the start of the frame which indicates the start and end 57239275Sgonzo * positions of the UDP or TCP frame. This requires the driver to manually 58239275Sgonzo * go through the packet data and decode the headers prior to sending. 59239275Sgonzo * On Linux they generally provide cues to the location of the csum and the 60239275Sgonzo * area to calculate it over, on FreeBSD we seem to have to do it all ourselves, 61239275Sgonzo * hence this is not as optimal and therefore h/w tX checksum is currently not 62239275Sgonzo * implemented. 63239275Sgonzo * 64239275Sgonzo */ 65239275Sgonzo#include <sys/stdint.h> 66239275Sgonzo#include <sys/stddef.h> 67239275Sgonzo#include <sys/param.h> 68239275Sgonzo#include <sys/queue.h> 69239275Sgonzo#include <sys/types.h> 70239275Sgonzo#include <sys/systm.h> 71239275Sgonzo#include <sys/kernel.h> 72239275Sgonzo#include <sys/bus.h> 73239275Sgonzo#include <sys/module.h> 74239275Sgonzo#include <sys/lock.h> 75239275Sgonzo#include <sys/mutex.h> 76239275Sgonzo#include <sys/condvar.h> 77257241Sglebius#include <sys/socket.h> 78239275Sgonzo#include <sys/sysctl.h> 79239275Sgonzo#include <sys/sx.h> 80239275Sgonzo#include <sys/unistd.h> 81239275Sgonzo#include <sys/callout.h> 82239275Sgonzo#include <sys/malloc.h> 83239275Sgonzo#include <sys/priv.h> 84239275Sgonzo#include <sys/random.h> 85239275Sgonzo 86257241Sglebius#include <net/if.h> 87257241Sglebius#include <net/if_var.h> 88257241Sglebius 89265371Stuexen#include <netinet/in.h> 90265371Stuexen#include <netinet/ip.h> 91265371Stuexen 92243421Sgonzo#include "opt_platform.h" 93243421Sgonzo 94243421Sgonzo#ifdef FDT 95243421Sgonzo#include <dev/fdt/fdt_common.h> 96243421Sgonzo#include <dev/ofw/ofw_bus.h> 97243421Sgonzo#include <dev/ofw/ofw_bus_subr.h> 98243421Sgonzo#endif 99243421Sgonzo 100239275Sgonzo#include <dev/usb/usb.h> 101239275Sgonzo#include <dev/usb/usbdi.h> 102239275Sgonzo#include <dev/usb/usbdi_util.h> 103239275Sgonzo#include "usbdevs.h" 104239275Sgonzo 105239275Sgonzo#define USB_DEBUG_VAR smsc_debug 106239275Sgonzo#include <dev/usb/usb_debug.h> 107239275Sgonzo#include <dev/usb/usb_process.h> 108239275Sgonzo 109239275Sgonzo#include <dev/usb/net/usb_ethernet.h> 110239275Sgonzo 111246615Shselasky#include <dev/usb/net/if_smscreg.h> 112246615Shselasky 113239275Sgonzo#ifdef USB_DEBUG 114239275Sgonzostatic int smsc_debug = 0; 115239275Sgonzo 116239275SgonzoSYSCTL_NODE(_hw_usb, OID_AUTO, smsc, CTLFLAG_RW, 0, "USB smsc"); 117276701ShselaskySYSCTL_INT(_hw_usb_smsc, OID_AUTO, debug, CTLFLAG_RWTUN, &smsc_debug, 0, 118239275Sgonzo "Debug level"); 119239275Sgonzo#endif 120239275Sgonzo 121239275Sgonzo/* 122239275Sgonzo * Various supported device vendors/products. 123239275Sgonzo */ 124239275Sgonzostatic const struct usb_device_id smsc_devs[] = { 125239275Sgonzo#define SMSC_DEV(p,i) { USB_VPI(USB_VENDOR_SMC2, USB_PRODUCT_SMC2_##p, i) } 126272160Sgavin SMSC_DEV(LAN89530_ETH, 0), 127272160Sgavin SMSC_DEV(LAN9500_ETH, 0), 128272160Sgavin SMSC_DEV(LAN9500_ETH_2, 0), 129272160Sgavin SMSC_DEV(LAN9500A_ETH, 0), 130272160Sgavin SMSC_DEV(LAN9500A_ETH_2, 0), 131272160Sgavin SMSC_DEV(LAN9505_ETH, 0), 132272160Sgavin SMSC_DEV(LAN9505A_ETH, 0), 133239275Sgonzo SMSC_DEV(LAN9514_ETH, 0), 134272160Sgavin SMSC_DEV(LAN9514_ETH_2, 0), 135272160Sgavin SMSC_DEV(LAN9530_ETH, 0), 136272160Sgavin SMSC_DEV(LAN9730_ETH, 0), 137272160Sgavin SMSC_DEV(LAN9500_SAL10, 0), 138272160Sgavin SMSC_DEV(LAN9505_SAL10, 0), 139272160Sgavin SMSC_DEV(LAN9500A_SAL10, 0), 140272160Sgavin SMSC_DEV(LAN9505A_SAL10, 0), 141272160Sgavin SMSC_DEV(LAN9514_SAL10, 0), 142272160Sgavin SMSC_DEV(LAN9500A_HAL, 0), 143272160Sgavin SMSC_DEV(LAN9505A_HAL, 0), 144239275Sgonzo#undef SMSC_DEV 145239275Sgonzo}; 146239275Sgonzo 147239275Sgonzo 148239275Sgonzo#ifdef USB_DEBUG 149239275Sgonzo#define smsc_dbg_printf(sc, fmt, args...) \ 150239275Sgonzo do { \ 151239275Sgonzo if (smsc_debug > 0) \ 152239275Sgonzo device_printf((sc)->sc_ue.ue_dev, "debug: " fmt, ##args); \ 153239275Sgonzo } while(0) 154239275Sgonzo#else 155239275Sgonzo#define smsc_dbg_printf(sc, fmt, args...) 156239275Sgonzo#endif 157239275Sgonzo 158239275Sgonzo#define smsc_warn_printf(sc, fmt, args...) \ 159239275Sgonzo device_printf((sc)->sc_ue.ue_dev, "warning: " fmt, ##args) 160239275Sgonzo 161239275Sgonzo#define smsc_err_printf(sc, fmt, args...) \ 162239275Sgonzo device_printf((sc)->sc_ue.ue_dev, "error: " fmt, ##args) 163239275Sgonzo 164239275Sgonzo 165239275Sgonzo#define ETHER_IS_ZERO(addr) \ 166239275Sgonzo (!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5])) 167239275Sgonzo 168239275Sgonzo#define ETHER_IS_VALID(addr) \ 169239275Sgonzo (!ETHER_IS_MULTICAST(addr) && !ETHER_IS_ZERO(addr)) 170239275Sgonzo 171239275Sgonzostatic device_probe_t smsc_probe; 172239275Sgonzostatic device_attach_t smsc_attach; 173239275Sgonzostatic device_detach_t smsc_detach; 174239275Sgonzo 175239275Sgonzostatic usb_callback_t smsc_bulk_read_callback; 176239275Sgonzostatic usb_callback_t smsc_bulk_write_callback; 177239275Sgonzo 178239275Sgonzostatic miibus_readreg_t smsc_miibus_readreg; 179239275Sgonzostatic miibus_writereg_t smsc_miibus_writereg; 180239275Sgonzostatic miibus_statchg_t smsc_miibus_statchg; 181239275Sgonzo 182239275Sgonzo#if __FreeBSD_version > 1000000 183239275Sgonzostatic int smsc_attach_post_sub(struct usb_ether *ue); 184239275Sgonzo#endif 185239275Sgonzostatic uether_fn_t smsc_attach_post; 186239275Sgonzostatic uether_fn_t smsc_init; 187239275Sgonzostatic uether_fn_t smsc_stop; 188239275Sgonzostatic uether_fn_t smsc_start; 189239275Sgonzostatic uether_fn_t smsc_tick; 190239275Sgonzostatic uether_fn_t smsc_setmulti; 191239275Sgonzostatic uether_fn_t smsc_setpromisc; 192239275Sgonzo 193239275Sgonzostatic int smsc_ifmedia_upd(struct ifnet *); 194239275Sgonzostatic void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 195239275Sgonzo 196239275Sgonzostatic int smsc_chip_init(struct smsc_softc *sc); 197239275Sgonzostatic int smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data); 198239275Sgonzo 199239275Sgonzostatic const struct usb_config smsc_config[SMSC_N_TRANSFER] = { 200239275Sgonzo 201239275Sgonzo [SMSC_BULK_DT_WR] = { 202239275Sgonzo .type = UE_BULK, 203239275Sgonzo .endpoint = UE_ADDR_ANY, 204239275Sgonzo .direction = UE_DIR_OUT, 205239275Sgonzo .frames = 16, 206239275Sgonzo .bufsize = 16 * (MCLBYTES + 16), 207239275Sgonzo .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 208239275Sgonzo .callback = smsc_bulk_write_callback, 209239275Sgonzo .timeout = 10000, /* 10 seconds */ 210239275Sgonzo }, 211239275Sgonzo 212239275Sgonzo [SMSC_BULK_DT_RD] = { 213239275Sgonzo .type = UE_BULK, 214239275Sgonzo .endpoint = UE_ADDR_ANY, 215239275Sgonzo .direction = UE_DIR_IN, 216239275Sgonzo .bufsize = 20480, /* bytes */ 217239275Sgonzo .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 218239275Sgonzo .callback = smsc_bulk_read_callback, 219239275Sgonzo .timeout = 0, /* no timeout */ 220239275Sgonzo }, 221239275Sgonzo 222239275Sgonzo /* The SMSC chip supports an interrupt endpoints, however they aren't 223239275Sgonzo * needed as we poll on the MII status. 224239275Sgonzo */ 225239275Sgonzo}; 226239275Sgonzo 227239275Sgonzostatic const struct usb_ether_methods smsc_ue_methods = { 228239275Sgonzo .ue_attach_post = smsc_attach_post, 229239275Sgonzo#if __FreeBSD_version > 1000000 230239275Sgonzo .ue_attach_post_sub = smsc_attach_post_sub, 231239275Sgonzo#endif 232239275Sgonzo .ue_start = smsc_start, 233239275Sgonzo .ue_ioctl = smsc_ioctl, 234239275Sgonzo .ue_init = smsc_init, 235239275Sgonzo .ue_stop = smsc_stop, 236239275Sgonzo .ue_tick = smsc_tick, 237239275Sgonzo .ue_setmulti = smsc_setmulti, 238239275Sgonzo .ue_setpromisc = smsc_setpromisc, 239239275Sgonzo .ue_mii_upd = smsc_ifmedia_upd, 240239275Sgonzo .ue_mii_sts = smsc_ifmedia_sts, 241239275Sgonzo}; 242239275Sgonzo 243239275Sgonzo/** 244239275Sgonzo * smsc_read_reg - Reads a 32-bit register on the device 245239275Sgonzo * @sc: driver soft context 246239275Sgonzo * @off: offset of the register 247239275Sgonzo * @data: pointer a value that will be populated with the register value 248239275Sgonzo * 249239275Sgonzo * LOCKING: 250239275Sgonzo * The device lock must be held before calling this function. 251239275Sgonzo * 252239275Sgonzo * RETURNS: 253239275Sgonzo * 0 on success, a USB_ERR_?? error code on failure. 254239275Sgonzo */ 255239275Sgonzostatic int 256239275Sgonzosmsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data) 257239275Sgonzo{ 258239275Sgonzo struct usb_device_request req; 259239275Sgonzo uint32_t buf; 260239275Sgonzo usb_error_t err; 261239275Sgonzo 262239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 263239275Sgonzo 264239275Sgonzo req.bmRequestType = UT_READ_VENDOR_DEVICE; 265239275Sgonzo req.bRequest = SMSC_UR_READ_REG; 266239275Sgonzo USETW(req.wValue, 0); 267239275Sgonzo USETW(req.wIndex, off); 268239275Sgonzo USETW(req.wLength, 4); 269239275Sgonzo 270239275Sgonzo err = uether_do_request(&sc->sc_ue, &req, &buf, 1000); 271239275Sgonzo if (err != 0) 272239275Sgonzo smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off); 273239275Sgonzo 274239275Sgonzo *data = le32toh(buf); 275239275Sgonzo 276239275Sgonzo return (err); 277239275Sgonzo} 278239275Sgonzo 279239275Sgonzo/** 280239275Sgonzo * smsc_write_reg - Writes a 32-bit register on the device 281239275Sgonzo * @sc: driver soft context 282239275Sgonzo * @off: offset of the register 283239275Sgonzo * @data: the 32-bit value to write into the register 284239275Sgonzo * 285239275Sgonzo * LOCKING: 286239275Sgonzo * The device lock must be held before calling this function. 287239275Sgonzo * 288239275Sgonzo * RETURNS: 289239275Sgonzo * 0 on success, a USB_ERR_?? error code on failure. 290239275Sgonzo */ 291239275Sgonzostatic int 292239275Sgonzosmsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data) 293239275Sgonzo{ 294239275Sgonzo struct usb_device_request req; 295239275Sgonzo uint32_t buf; 296239275Sgonzo usb_error_t err; 297239275Sgonzo 298239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 299239275Sgonzo 300239275Sgonzo buf = htole32(data); 301239275Sgonzo 302239275Sgonzo req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 303239275Sgonzo req.bRequest = SMSC_UR_WRITE_REG; 304239275Sgonzo USETW(req.wValue, 0); 305239275Sgonzo USETW(req.wIndex, off); 306239275Sgonzo USETW(req.wLength, 4); 307239275Sgonzo 308239275Sgonzo err = uether_do_request(&sc->sc_ue, &req, &buf, 1000); 309239275Sgonzo if (err != 0) 310239275Sgonzo smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off); 311239275Sgonzo 312239275Sgonzo return (err); 313239275Sgonzo} 314239275Sgonzo 315239275Sgonzo/** 316239275Sgonzo * smsc_wait_for_bits - Polls on a register value until bits are cleared 317239275Sgonzo * @sc: soft context 318239275Sgonzo * @reg: offset of the register 319239275Sgonzo * @bits: if the bits are clear the function returns 320239275Sgonzo * 321239275Sgonzo * LOCKING: 322239275Sgonzo * The device lock must be held before calling this function. 323239275Sgonzo * 324239275Sgonzo * RETURNS: 325239275Sgonzo * 0 on success, or a USB_ERR_?? error code on failure. 326239275Sgonzo */ 327239275Sgonzostatic int 328239275Sgonzosmsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits) 329239275Sgonzo{ 330239275Sgonzo usb_ticks_t start_ticks; 331240804Shselasky const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000); 332239275Sgonzo uint32_t val; 333239275Sgonzo int err; 334239275Sgonzo 335239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 336239275Sgonzo 337239275Sgonzo start_ticks = (usb_ticks_t)ticks; 338239275Sgonzo do { 339239275Sgonzo if ((err = smsc_read_reg(sc, reg, &val)) != 0) 340239275Sgonzo return (err); 341239275Sgonzo if (!(val & bits)) 342239275Sgonzo return (0); 343239275Sgonzo 344239275Sgonzo uether_pause(&sc->sc_ue, hz / 100); 345240804Shselasky } while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks); 346239275Sgonzo 347239275Sgonzo return (USB_ERR_TIMEOUT); 348239275Sgonzo} 349239275Sgonzo 350239275Sgonzo/** 351239275Sgonzo * smsc_eeprom_read - Reads the attached EEPROM 352239275Sgonzo * @sc: soft context 353239275Sgonzo * @off: the eeprom address offset 354239275Sgonzo * @buf: stores the bytes 355239275Sgonzo * @buflen: the number of bytes to read 356239275Sgonzo * 357239275Sgonzo * Simply reads bytes from an attached eeprom. 358239275Sgonzo * 359239275Sgonzo * LOCKING: 360239275Sgonzo * The function takes and releases the device lock if it is not already held. 361239275Sgonzo * 362239275Sgonzo * RETURNS: 363239275Sgonzo * 0 on success, or a USB_ERR_?? error code on failure. 364239275Sgonzo */ 365239275Sgonzostatic int 366239275Sgonzosmsc_eeprom_read(struct smsc_softc *sc, uint16_t off, uint8_t *buf, uint16_t buflen) 367239275Sgonzo{ 368239275Sgonzo usb_ticks_t start_ticks; 369240806Shselasky const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000); 370239275Sgonzo int err; 371239275Sgonzo int locked; 372239275Sgonzo uint32_t val; 373239275Sgonzo uint16_t i; 374239275Sgonzo 375239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 376239275Sgonzo if (!locked) 377239275Sgonzo SMSC_LOCK(sc); 378239275Sgonzo 379239275Sgonzo err = smsc_wait_for_bits(sc, SMSC_EEPROM_CMD, SMSC_EEPROM_CMD_BUSY); 380239275Sgonzo if (err != 0) { 381239275Sgonzo smsc_warn_printf(sc, "eeprom busy, failed to read data\n"); 382239275Sgonzo goto done; 383239275Sgonzo } 384239275Sgonzo 385239275Sgonzo /* start reading the bytes, one at a time */ 386239275Sgonzo for (i = 0; i < buflen; i++) { 387239275Sgonzo 388239275Sgonzo val = SMSC_EEPROM_CMD_BUSY | (SMSC_EEPROM_CMD_ADDR_MASK & (off + i)); 389239275Sgonzo if ((err = smsc_write_reg(sc, SMSC_EEPROM_CMD, val)) != 0) 390239275Sgonzo goto done; 391239275Sgonzo 392239275Sgonzo start_ticks = (usb_ticks_t)ticks; 393239275Sgonzo do { 394239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_EEPROM_CMD, &val)) != 0) 395239275Sgonzo goto done; 396239275Sgonzo if (!(val & SMSC_EEPROM_CMD_BUSY) || (val & SMSC_EEPROM_CMD_TIMEOUT)) 397239275Sgonzo break; 398239275Sgonzo 399239275Sgonzo uether_pause(&sc->sc_ue, hz / 100); 400240806Shselasky } while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks); 401240806Shselasky 402239275Sgonzo if (val & (SMSC_EEPROM_CMD_BUSY | SMSC_EEPROM_CMD_TIMEOUT)) { 403239275Sgonzo smsc_warn_printf(sc, "eeprom command failed\n"); 404239275Sgonzo err = USB_ERR_IOERROR; 405239275Sgonzo break; 406239275Sgonzo } 407239275Sgonzo 408239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_EEPROM_DATA, &val)) != 0) 409239275Sgonzo goto done; 410239275Sgonzo 411239275Sgonzo buf[i] = (val & 0xff); 412239275Sgonzo } 413239275Sgonzo 414239275Sgonzodone: 415239275Sgonzo if (!locked) 416239275Sgonzo SMSC_UNLOCK(sc); 417239275Sgonzo 418239275Sgonzo return (err); 419239275Sgonzo} 420239275Sgonzo 421239275Sgonzo/** 422239275Sgonzo * smsc_miibus_readreg - Reads a MII/MDIO register 423239275Sgonzo * @dev: usb ether device 424239275Sgonzo * @phy: the number of phy reading from 425239275Sgonzo * @reg: the register address 426239275Sgonzo * 427239275Sgonzo * Attempts to read a phy register over the MII bus. 428239275Sgonzo * 429239275Sgonzo * LOCKING: 430239275Sgonzo * Takes and releases the device mutex lock if not already held. 431239275Sgonzo * 432239275Sgonzo * RETURNS: 433239275Sgonzo * Returns the 16-bits read from the MII register, if this function fails 0 434239275Sgonzo * is returned. 435239275Sgonzo */ 436239275Sgonzostatic int 437239275Sgonzosmsc_miibus_readreg(device_t dev, int phy, int reg) 438239275Sgonzo{ 439239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 440239275Sgonzo int locked; 441239275Sgonzo uint32_t addr; 442239275Sgonzo uint32_t val = 0; 443239275Sgonzo 444239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 445239275Sgonzo if (!locked) 446239275Sgonzo SMSC_LOCK(sc); 447239275Sgonzo 448239275Sgonzo if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 449239275Sgonzo smsc_warn_printf(sc, "MII is busy\n"); 450239275Sgonzo goto done; 451239275Sgonzo } 452239275Sgonzo 453239275Sgonzo addr = (phy << 11) | (reg << 6) | SMSC_MII_READ; 454239275Sgonzo smsc_write_reg(sc, SMSC_MII_ADDR, addr); 455239275Sgonzo 456239275Sgonzo if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 457239275Sgonzo smsc_warn_printf(sc, "MII read timeout\n"); 458239275Sgonzo 459239275Sgonzo smsc_read_reg(sc, SMSC_MII_DATA, &val); 460239275Sgonzo val = le32toh(val); 461239275Sgonzo 462239275Sgonzodone: 463239275Sgonzo if (!locked) 464239275Sgonzo SMSC_UNLOCK(sc); 465239275Sgonzo 466239275Sgonzo return (val & 0xFFFF); 467239275Sgonzo} 468239275Sgonzo 469239275Sgonzo/** 470239275Sgonzo * smsc_miibus_writereg - Writes a MII/MDIO register 471239275Sgonzo * @dev: usb ether device 472239275Sgonzo * @phy: the number of phy writing to 473239275Sgonzo * @reg: the register address 474239275Sgonzo * @val: the value to write 475239275Sgonzo * 476239275Sgonzo * Attempts to write a phy register over the MII bus. 477239275Sgonzo * 478239275Sgonzo * LOCKING: 479239275Sgonzo * Takes and releases the device mutex lock if not already held. 480239275Sgonzo * 481239275Sgonzo * RETURNS: 482239275Sgonzo * Always returns 0 regardless of success or failure. 483239275Sgonzo */ 484239275Sgonzostatic int 485239275Sgonzosmsc_miibus_writereg(device_t dev, int phy, int reg, int val) 486239275Sgonzo{ 487239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 488239275Sgonzo int locked; 489239275Sgonzo uint32_t addr; 490239275Sgonzo 491239275Sgonzo if (sc->sc_phyno != phy) 492239275Sgonzo return (0); 493239275Sgonzo 494239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 495239275Sgonzo if (!locked) 496239275Sgonzo SMSC_LOCK(sc); 497239275Sgonzo 498239275Sgonzo if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 499239275Sgonzo smsc_warn_printf(sc, "MII is busy\n"); 500239275Sgonzo goto done; 501239275Sgonzo } 502239275Sgonzo 503239275Sgonzo val = htole32(val); 504239275Sgonzo smsc_write_reg(sc, SMSC_MII_DATA, val); 505239275Sgonzo 506239275Sgonzo addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE; 507239275Sgonzo smsc_write_reg(sc, SMSC_MII_ADDR, addr); 508239275Sgonzo 509239275Sgonzo if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 510239275Sgonzo smsc_warn_printf(sc, "MII write timeout\n"); 511239275Sgonzo 512239275Sgonzodone: 513239275Sgonzo if (!locked) 514239275Sgonzo SMSC_UNLOCK(sc); 515239275Sgonzo return (0); 516239275Sgonzo} 517239275Sgonzo 518239275Sgonzo 519239275Sgonzo 520239275Sgonzo/** 521239275Sgonzo * smsc_miibus_statchg - Called to detect phy status change 522239275Sgonzo * @dev: usb ether device 523239275Sgonzo * 524239275Sgonzo * This function is called periodically by the system to poll for status 525239275Sgonzo * changes of the link. 526239275Sgonzo * 527239275Sgonzo * LOCKING: 528239275Sgonzo * Takes and releases the device mutex lock if not already held. 529239275Sgonzo */ 530239275Sgonzostatic void 531239275Sgonzosmsc_miibus_statchg(device_t dev) 532239275Sgonzo{ 533239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 534239275Sgonzo struct mii_data *mii = uether_getmii(&sc->sc_ue); 535239275Sgonzo struct ifnet *ifp; 536239275Sgonzo int locked; 537239275Sgonzo int err; 538239275Sgonzo uint32_t flow; 539239275Sgonzo uint32_t afc_cfg; 540239275Sgonzo 541239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 542239275Sgonzo if (!locked) 543239275Sgonzo SMSC_LOCK(sc); 544239275Sgonzo 545239275Sgonzo ifp = uether_getifp(&sc->sc_ue); 546239275Sgonzo if (mii == NULL || ifp == NULL || 547239275Sgonzo (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 548239275Sgonzo goto done; 549239275Sgonzo 550239275Sgonzo /* Use the MII status to determine link status */ 551239275Sgonzo sc->sc_flags &= ~SMSC_FLAG_LINK; 552239275Sgonzo if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 553239275Sgonzo (IFM_ACTIVE | IFM_AVALID)) { 554239275Sgonzo switch (IFM_SUBTYPE(mii->mii_media_active)) { 555239275Sgonzo case IFM_10_T: 556239275Sgonzo case IFM_100_TX: 557239275Sgonzo sc->sc_flags |= SMSC_FLAG_LINK; 558239275Sgonzo break; 559239275Sgonzo case IFM_1000_T: 560239275Sgonzo /* Gigabit ethernet not supported by chipset */ 561239275Sgonzo break; 562239275Sgonzo default: 563239275Sgonzo break; 564239275Sgonzo } 565239275Sgonzo } 566239275Sgonzo 567239275Sgonzo /* Lost link, do nothing. */ 568239275Sgonzo if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 569239275Sgonzo smsc_dbg_printf(sc, "link flag not set\n"); 570239275Sgonzo goto done; 571239275Sgonzo } 572239275Sgonzo 573239275Sgonzo err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg); 574239275Sgonzo if (err) { 575239275Sgonzo smsc_warn_printf(sc, "failed to read initial AFC_CFG, error %d\n", err); 576239275Sgonzo goto done; 577239275Sgonzo } 578239275Sgonzo 579239275Sgonzo /* Enable/disable full duplex operation and TX/RX pause */ 580239275Sgonzo if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 581239275Sgonzo smsc_dbg_printf(sc, "full duplex operation\n"); 582239275Sgonzo sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN; 583239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX; 584239275Sgonzo 585239275Sgonzo if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 586239275Sgonzo flow = 0xffff0002; 587239275Sgonzo else 588239275Sgonzo flow = 0; 589239275Sgonzo 590239275Sgonzo if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 591239275Sgonzo afc_cfg |= 0xf; 592239275Sgonzo else 593239275Sgonzo afc_cfg &= ~0xf; 594239275Sgonzo 595239275Sgonzo } else { 596239275Sgonzo smsc_dbg_printf(sc, "half duplex operation\n"); 597239275Sgonzo sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX; 598239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN; 599239275Sgonzo 600239275Sgonzo flow = 0; 601239275Sgonzo afc_cfg |= 0xf; 602239275Sgonzo } 603239275Sgonzo 604239275Sgonzo err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 605239275Sgonzo err += smsc_write_reg(sc, SMSC_FLOW, flow); 606239275Sgonzo err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg); 607239275Sgonzo if (err) 608239275Sgonzo smsc_warn_printf(sc, "media change failed, error %d\n", err); 609239275Sgonzo 610239275Sgonzodone: 611239275Sgonzo if (!locked) 612239275Sgonzo SMSC_UNLOCK(sc); 613239275Sgonzo} 614239275Sgonzo 615239275Sgonzo/** 616239275Sgonzo * smsc_ifmedia_upd - Set media options 617239275Sgonzo * @ifp: interface pointer 618239275Sgonzo * 619239275Sgonzo * Basically boilerplate code that simply calls the mii functions to set the 620239275Sgonzo * media options. 621239275Sgonzo * 622239275Sgonzo * LOCKING: 623239275Sgonzo * The device lock must be held before this function is called. 624239275Sgonzo * 625239275Sgonzo * RETURNS: 626239275Sgonzo * Returns 0 on success or a negative error code. 627239275Sgonzo */ 628239275Sgonzostatic int 629239275Sgonzosmsc_ifmedia_upd(struct ifnet *ifp) 630239275Sgonzo{ 631239275Sgonzo struct smsc_softc *sc = ifp->if_softc; 632239275Sgonzo struct mii_data *mii = uether_getmii(&sc->sc_ue); 633251734Skevlo struct mii_softc *miisc; 634239275Sgonzo int err; 635239275Sgonzo 636239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 637239275Sgonzo 638251734Skevlo LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 639251734Skevlo PHY_RESET(miisc); 640239275Sgonzo err = mii_mediachg(mii); 641239275Sgonzo return (err); 642239275Sgonzo} 643239275Sgonzo 644239275Sgonzo/** 645239275Sgonzo * smsc_ifmedia_sts - Report current media status 646239275Sgonzo * @ifp: inet interface pointer 647239275Sgonzo * @ifmr: interface media request 648239275Sgonzo * 649239275Sgonzo * Basically boilerplate code that simply calls the mii functions to get the 650239275Sgonzo * media status. 651239275Sgonzo * 652239275Sgonzo * LOCKING: 653239275Sgonzo * Internally takes and releases the device lock. 654239275Sgonzo */ 655239275Sgonzostatic void 656239275Sgonzosmsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 657239275Sgonzo{ 658239275Sgonzo struct smsc_softc *sc = ifp->if_softc; 659239275Sgonzo struct mii_data *mii = uether_getmii(&sc->sc_ue); 660239275Sgonzo 661239275Sgonzo SMSC_LOCK(sc); 662239275Sgonzo mii_pollstat(mii); 663239275Sgonzo ifmr->ifm_active = mii->mii_media_active; 664239275Sgonzo ifmr->ifm_status = mii->mii_media_status; 665251734Skevlo SMSC_UNLOCK(sc); 666239275Sgonzo} 667239275Sgonzo 668239275Sgonzo/** 669239275Sgonzo * smsc_hash - Calculate the hash of a mac address 670239275Sgonzo * @addr: The mac address to calculate the hash on 671239275Sgonzo * 672239275Sgonzo * This function is used when configuring a range of m'cast mac addresses to 673239275Sgonzo * filter on. The hash of the mac address is put in the device's mac hash 674239275Sgonzo * table. 675239275Sgonzo * 676239275Sgonzo * RETURNS: 677239275Sgonzo * Returns a value from 0-63 value which is the hash of the mac address. 678239275Sgonzo */ 679239275Sgonzostatic inline uint32_t 680239275Sgonzosmsc_hash(uint8_t addr[ETHER_ADDR_LEN]) 681239275Sgonzo{ 682239275Sgonzo return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 683239275Sgonzo} 684239275Sgonzo 685239275Sgonzo/** 686239275Sgonzo * smsc_setmulti - Setup multicast 687239275Sgonzo * @ue: usb ethernet device context 688239275Sgonzo * 689239275Sgonzo * Tells the device to either accept frames with a multicast mac address, a 690239275Sgonzo * select group of m'cast mac addresses or just the devices mac address. 691239275Sgonzo * 692239275Sgonzo * LOCKING: 693239275Sgonzo * Should be called with the SMSC lock held. 694239275Sgonzo */ 695239275Sgonzostatic void 696239275Sgonzosmsc_setmulti(struct usb_ether *ue) 697239275Sgonzo{ 698239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 699239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 700239275Sgonzo struct ifmultiaddr *ifma; 701239275Sgonzo uint32_t hashtbl[2] = { 0, 0 }; 702239275Sgonzo uint32_t hash; 703239275Sgonzo 704239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 705239275Sgonzo 706239275Sgonzo if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 707239275Sgonzo smsc_dbg_printf(sc, "receive all multicast enabled\n"); 708239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 709239275Sgonzo sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 710239275Sgonzo 711239275Sgonzo } else { 712239275Sgonzo /* Take the lock of the mac address list before hashing each of them */ 713239275Sgonzo if_maddr_rlock(ifp); 714239275Sgonzo 715239275Sgonzo if (!TAILQ_EMPTY(&ifp->if_multiaddrs)) { 716239275Sgonzo /* We are filtering on a set of address so calculate hashes of each 717239275Sgonzo * of the address and set the corresponding bits in the register. 718239275Sgonzo */ 719239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 720239275Sgonzo sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 721239275Sgonzo 722239275Sgonzo TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 723239275Sgonzo if (ifma->ifma_addr->sa_family != AF_LINK) 724239275Sgonzo continue; 725239275Sgonzo 726239275Sgonzo hash = smsc_hash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 727239275Sgonzo hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 728239275Sgonzo } 729239275Sgonzo } else { 730239275Sgonzo /* Only receive packets with destination set to our mac address */ 731239275Sgonzo sc->sc_mac_csr &= ~(SMSC_MAC_CSR_MCPAS | SMSC_MAC_CSR_HPFILT); 732239275Sgonzo } 733239275Sgonzo 734239275Sgonzo if_maddr_runlock(ifp); 735239275Sgonzo 736239275Sgonzo /* Debug */ 737239275Sgonzo if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) 738239275Sgonzo smsc_dbg_printf(sc, "receive select group of macs\n"); 739239275Sgonzo else 740239275Sgonzo smsc_dbg_printf(sc, "receive own packets only\n"); 741239275Sgonzo } 742239275Sgonzo 743239275Sgonzo /* Write the hash table and mac control registers */ 744239275Sgonzo smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 745239275Sgonzo smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 746239275Sgonzo smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 747239275Sgonzo} 748239275Sgonzo 749239275Sgonzo 750239275Sgonzo/** 751239275Sgonzo * smsc_setpromisc - Enables/disables promiscuous mode 752239275Sgonzo * @ue: usb ethernet device context 753239275Sgonzo * 754239275Sgonzo * LOCKING: 755239275Sgonzo * Should be called with the SMSC lock held. 756239275Sgonzo */ 757239275Sgonzostatic void 758239275Sgonzosmsc_setpromisc(struct usb_ether *ue) 759239275Sgonzo{ 760239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 761239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 762239275Sgonzo 763239275Sgonzo smsc_dbg_printf(sc, "promiscuous mode %sabled\n", 764239275Sgonzo (ifp->if_flags & IFF_PROMISC) ? "en" : "dis"); 765239275Sgonzo 766239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 767239275Sgonzo 768239275Sgonzo if (ifp->if_flags & IFF_PROMISC) 769239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 770239275Sgonzo else 771239275Sgonzo sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 772239275Sgonzo 773239275Sgonzo smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 774239275Sgonzo} 775239275Sgonzo 776239275Sgonzo 777239275Sgonzo/** 778239275Sgonzo * smsc_sethwcsum - Enable or disable H/W UDP and TCP checksumming 779239275Sgonzo * @sc: driver soft context 780239275Sgonzo * 781239275Sgonzo * LOCKING: 782239275Sgonzo * Should be called with the SMSC lock held. 783239275Sgonzo * 784239275Sgonzo * RETURNS: 785239275Sgonzo * Returns 0 on success or a negative error code. 786239275Sgonzo */ 787239275Sgonzostatic int smsc_sethwcsum(struct smsc_softc *sc) 788239275Sgonzo{ 789239275Sgonzo struct ifnet *ifp = uether_getifp(&sc->sc_ue); 790239275Sgonzo uint32_t val; 791239275Sgonzo int err; 792239275Sgonzo 793239275Sgonzo if (!ifp) 794239275Sgonzo return (-EIO); 795239275Sgonzo 796239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 797239275Sgonzo 798239275Sgonzo err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 799239275Sgonzo if (err != 0) { 800239275Sgonzo smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", err); 801239275Sgonzo return (err); 802239275Sgonzo } 803239275Sgonzo 804239275Sgonzo /* Enable/disable the Rx checksum */ 805239275Sgonzo if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_RXCSUM) 806239275Sgonzo val |= SMSC_COE_CTRL_RX_EN; 807239275Sgonzo else 808239275Sgonzo val &= ~SMSC_COE_CTRL_RX_EN; 809239275Sgonzo 810239275Sgonzo /* Enable/disable the Tx checksum (currently not supported) */ 811239275Sgonzo if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_TXCSUM) 812239275Sgonzo val |= SMSC_COE_CTRL_TX_EN; 813239275Sgonzo else 814239275Sgonzo val &= ~SMSC_COE_CTRL_TX_EN; 815239275Sgonzo 816239275Sgonzo err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 817239275Sgonzo if (err != 0) { 818239275Sgonzo smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", err); 819239275Sgonzo return (err); 820239275Sgonzo } 821239275Sgonzo 822239275Sgonzo return (0); 823239275Sgonzo} 824239275Sgonzo 825239275Sgonzo 826239275Sgonzo/** 827239275Sgonzo * smsc_setmacaddress - Sets the mac address in the device 828239275Sgonzo * @sc: driver soft context 829239275Sgonzo * @addr: pointer to array contain at least 6 bytes of the mac 830239275Sgonzo * 831239275Sgonzo * Writes the MAC address into the device, usually the MAC is programmed with 832239275Sgonzo * values from the EEPROM. 833239275Sgonzo * 834239275Sgonzo * LOCKING: 835239275Sgonzo * Should be called with the SMSC lock held. 836239275Sgonzo * 837239275Sgonzo * RETURNS: 838239275Sgonzo * Returns 0 on success or a negative error code. 839239275Sgonzo */ 840239275Sgonzostatic int 841239275Sgonzosmsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 842239275Sgonzo{ 843239275Sgonzo int err; 844239275Sgonzo uint32_t val; 845239275Sgonzo 846239275Sgonzo smsc_dbg_printf(sc, "setting mac address to %02x:%02x:%02x:%02x:%02x:%02x\n", 847239275Sgonzo addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 848239275Sgonzo 849239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 850239275Sgonzo 851239275Sgonzo val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 852239275Sgonzo if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 853239275Sgonzo goto done; 854239275Sgonzo 855239275Sgonzo val = (addr[5] << 8) | addr[4]; 856239275Sgonzo err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 857239275Sgonzo 858239275Sgonzodone: 859239275Sgonzo return (err); 860239275Sgonzo} 861239275Sgonzo 862239275Sgonzo/** 863239275Sgonzo * smsc_reset - Reset the SMSC chip 864239275Sgonzo * @sc: device soft context 865239275Sgonzo * 866239275Sgonzo * LOCKING: 867239275Sgonzo * Should be called with the SMSC lock held. 868239275Sgonzo */ 869239275Sgonzostatic void 870239275Sgonzosmsc_reset(struct smsc_softc *sc) 871239275Sgonzo{ 872239275Sgonzo struct usb_config_descriptor *cd; 873239275Sgonzo usb_error_t err; 874239275Sgonzo 875239275Sgonzo cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 876239275Sgonzo 877239275Sgonzo err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 878239275Sgonzo cd->bConfigurationValue); 879239275Sgonzo if (err) 880239275Sgonzo smsc_warn_printf(sc, "reset failed (ignored)\n"); 881239275Sgonzo 882239275Sgonzo /* Wait a little while for the chip to get its brains in order. */ 883239275Sgonzo uether_pause(&sc->sc_ue, hz / 100); 884239275Sgonzo 885239275Sgonzo /* Reinitialize controller to achieve full reset. */ 886239275Sgonzo smsc_chip_init(sc); 887239275Sgonzo} 888239275Sgonzo 889239275Sgonzo 890239275Sgonzo/** 891239275Sgonzo * smsc_init - Initialises the LAN95xx chip 892239275Sgonzo * @ue: USB ether interface 893239275Sgonzo * 894239275Sgonzo * Called when the interface is brought up (i.e. ifconfig ue0 up), this 895239275Sgonzo * initialise the interface and the rx/tx pipes. 896239275Sgonzo * 897239275Sgonzo * LOCKING: 898239275Sgonzo * Should be called with the SMSC lock held. 899239275Sgonzo */ 900239275Sgonzostatic void 901239275Sgonzosmsc_init(struct usb_ether *ue) 902239275Sgonzo{ 903239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 904239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 905239275Sgonzo 906239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 907239275Sgonzo 908239275Sgonzo if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 909239275Sgonzo return; 910239275Sgonzo 911239275Sgonzo /* Cancel pending I/O */ 912239275Sgonzo smsc_stop(ue); 913239275Sgonzo 914239275Sgonzo#if __FreeBSD_version <= 1000000 915239275Sgonzo /* On earlier versions this was the first place we could tell the system 916239275Sgonzo * that we supported h/w csuming, however this is only called after the 917239275Sgonzo * the interface has been brought up - not ideal. 918239275Sgonzo */ 919239275Sgonzo if (!(ifp->if_capabilities & IFCAP_RXCSUM)) { 920239275Sgonzo ifp->if_capabilities |= IFCAP_RXCSUM; 921239275Sgonzo ifp->if_capenable |= IFCAP_RXCSUM; 922239275Sgonzo ifp->if_hwassist = 0; 923239275Sgonzo } 924239275Sgonzo 925239275Sgonzo /* TX checksuming is disabled for now 926239275Sgonzo ifp->if_capabilities |= IFCAP_TXCSUM; 927239275Sgonzo ifp->if_capenable |= IFCAP_TXCSUM; 928239275Sgonzo ifp->if_hwassist = CSUM_TCP | CSUM_UDP; 929239275Sgonzo */ 930239275Sgonzo#endif 931239275Sgonzo 932239275Sgonzo /* Reset the ethernet interface. */ 933239275Sgonzo smsc_reset(sc); 934239275Sgonzo 935239275Sgonzo /* Load the multicast filter. */ 936239275Sgonzo smsc_setmulti(ue); 937239275Sgonzo 938239275Sgonzo /* TCP/UDP checksum offload engines. */ 939239275Sgonzo smsc_sethwcsum(sc); 940239275Sgonzo 941239275Sgonzo usbd_xfer_set_stall(sc->sc_xfer[SMSC_BULK_DT_WR]); 942239275Sgonzo 943239275Sgonzo /* Indicate we are up and running. */ 944239275Sgonzo ifp->if_drv_flags |= IFF_DRV_RUNNING; 945239275Sgonzo 946239275Sgonzo /* Switch to selected media. */ 947239275Sgonzo smsc_ifmedia_upd(ifp); 948239275Sgonzo smsc_start(ue); 949239275Sgonzo} 950239275Sgonzo 951239275Sgonzo/** 952239275Sgonzo * smsc_bulk_read_callback - Read callback used to process the USB URB 953239275Sgonzo * @xfer: the USB transfer 954239275Sgonzo * @error: 955239275Sgonzo * 956239275Sgonzo * Reads the URB data which can contain one or more ethernet frames, the 957239275Sgonzo * frames are copyed into a mbuf and given to the system. 958239275Sgonzo * 959239275Sgonzo * LOCKING: 960239275Sgonzo * No locking required, doesn't access internal driver settings. 961239275Sgonzo */ 962239275Sgonzostatic void 963239275Sgonzosmsc_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 964239275Sgonzo{ 965239275Sgonzo struct smsc_softc *sc = usbd_xfer_softc(xfer); 966239275Sgonzo struct usb_ether *ue = &sc->sc_ue; 967239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 968239275Sgonzo struct mbuf *m; 969239275Sgonzo struct usb_page_cache *pc; 970239275Sgonzo uint32_t rxhdr; 971239275Sgonzo uint16_t pktlen; 972239275Sgonzo int off; 973239275Sgonzo int actlen; 974239275Sgonzo 975239275Sgonzo usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 976239275Sgonzo smsc_dbg_printf(sc, "rx : actlen %d\n", actlen); 977239275Sgonzo 978239275Sgonzo switch (USB_GET_STATE(xfer)) { 979239275Sgonzo case USB_ST_TRANSFERRED: 980239275Sgonzo 981239275Sgonzo /* There is always a zero length frame after bringing the IF up */ 982239275Sgonzo if (actlen < (sizeof(rxhdr) + ETHER_CRC_LEN)) 983239275Sgonzo goto tr_setup; 984239275Sgonzo 985239275Sgonzo /* There maybe multiple packets in the USB frame, each will have a 986239275Sgonzo * header and each needs to have it's own mbuf allocated and populated 987239275Sgonzo * for it. 988239275Sgonzo */ 989239275Sgonzo pc = usbd_xfer_get_frame(xfer, 0); 990239275Sgonzo off = 0; 991239275Sgonzo 992239275Sgonzo while (off < actlen) { 993239275Sgonzo 994239275Sgonzo /* The frame header is always aligned on a 4 byte boundary */ 995239275Sgonzo off = ((off + 0x3) & ~0x3); 996239275Sgonzo 997239275Sgonzo usbd_copy_out(pc, off, &rxhdr, sizeof(rxhdr)); 998239275Sgonzo off += (sizeof(rxhdr) + ETHER_ALIGN); 999239275Sgonzo rxhdr = le32toh(rxhdr); 1000239275Sgonzo 1001239275Sgonzo pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 1002239275Sgonzo 1003239275Sgonzo smsc_dbg_printf(sc, "rx : rxhdr 0x%08x : pktlen %d : actlen %d : " 1004239275Sgonzo "off %d\n", rxhdr, pktlen, actlen, off); 1005239275Sgonzo 1006239275Sgonzo 1007239275Sgonzo if (rxhdr & SMSC_RX_STAT_ERROR) { 1008239275Sgonzo smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 1009271832Sglebius if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1010239275Sgonzo if (rxhdr & SMSC_RX_STAT_COLLISION) 1011271832Sglebius if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1); 1012239275Sgonzo } else { 1013239275Sgonzo 1014239275Sgonzo /* Check if the ethernet frame is too big or too small */ 1015239275Sgonzo if ((pktlen < ETHER_HDR_LEN) || (pktlen > (actlen - off))) 1016239275Sgonzo goto tr_setup; 1017239275Sgonzo 1018239275Sgonzo /* Create a new mbuf to store the packet in */ 1019239275Sgonzo m = uether_newbuf(); 1020239275Sgonzo if (m == NULL) { 1021239275Sgonzo smsc_warn_printf(sc, "failed to create new mbuf\n"); 1022271832Sglebius if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 1023239275Sgonzo goto tr_setup; 1024239275Sgonzo } 1025239275Sgonzo 1026239275Sgonzo usbd_copy_out(pc, off, mtod(m, uint8_t *), pktlen); 1027239275Sgonzo 1028239275Sgonzo /* Check if RX TCP/UDP checksumming is being offloaded */ 1029239275Sgonzo if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) { 1030246196Shselasky 1031246196Shselasky struct ether_header *eh; 1032246196Shselasky 1033246196Shselasky eh = mtod(m, struct ether_header *); 1034239275Sgonzo 1035239275Sgonzo /* Remove the extra 2 bytes of the csum */ 1036239275Sgonzo pktlen -= 2; 1037239275Sgonzo 1038239275Sgonzo /* The checksum appears to be simplistically calculated 1039239275Sgonzo * over the udp/tcp header and data up to the end of the 1040239275Sgonzo * eth frame. Which means if the eth frame is padded 1041239275Sgonzo * the csum calculation is incorrectly performed over 1042239275Sgonzo * the padding bytes as well. Therefore to be safe we 1043239275Sgonzo * ignore the H/W csum on frames less than or equal to 1044239275Sgonzo * 64 bytes. 1045246196Shselasky * 1046246196Shselasky * Ignore H/W csum for non-IPv4 packets. 1047239275Sgonzo */ 1048265371Stuexen if ((be16toh(eh->ether_type) == ETHERTYPE_IP) && 1049265371Stuexen (pktlen > ETHER_MIN_LEN)) { 1050265371Stuexen struct ip *ip; 1051265371Stuexen 1052265371Stuexen ip = (struct ip *)(eh + 1); 1053265371Stuexen if ((ip->ip_v == IPVERSION) && 1054265371Stuexen ((ip->ip_p == IPPROTO_TCP) || 1055265371Stuexen (ip->ip_p == IPPROTO_UDP))) { 1056265371Stuexen /* Indicate the UDP/TCP csum has been calculated */ 1057265371Stuexen m->m_pkthdr.csum_flags |= CSUM_DATA_VALID; 1058265371Stuexen 1059265371Stuexen /* Copy the TCP/UDP checksum from the last 2 bytes 1060265371Stuexen * of the transfer and put in the csum_data field. 1061265371Stuexen */ 1062265371Stuexen usbd_copy_out(pc, (off + pktlen), 1063265371Stuexen &m->m_pkthdr.csum_data, 2); 1064265371Stuexen 1065265371Stuexen /* The data is copied in network order, but the 1066265371Stuexen * csum algorithm in the kernel expects it to be 1067265371Stuexen * in host network order. 1068265371Stuexen */ 1069265371Stuexen m->m_pkthdr.csum_data = ntohs(m->m_pkthdr.csum_data); 1070265371Stuexen 1071265371Stuexen smsc_dbg_printf(sc, "RX checksum offloaded (0x%04x)\n", 1072265371Stuexen m->m_pkthdr.csum_data); 1073265371Stuexen } 1074239275Sgonzo } 1075239275Sgonzo 1076239275Sgonzo /* Need to adjust the offset as well or we'll be off 1077239275Sgonzo * by 2 because the csum is removed from the packet 1078239275Sgonzo * length. 1079239275Sgonzo */ 1080239275Sgonzo off += 2; 1081239275Sgonzo } 1082239275Sgonzo 1083239275Sgonzo /* Finally enqueue the mbuf on the receive queue */ 1084241033Shselasky /* Remove 4 trailing bytes */ 1085241034Shselasky if (pktlen < (4 + ETHER_HDR_LEN)) { 1086241034Shselasky m_freem(m); 1087241034Shselasky goto tr_setup; 1088241034Shselasky } 1089241034Shselasky uether_rxmbuf(ue, m, pktlen - 4); 1090239275Sgonzo } 1091239275Sgonzo 1092239275Sgonzo /* Update the offset to move to the next potential packet */ 1093239275Sgonzo off += pktlen; 1094239275Sgonzo } 1095239275Sgonzo 1096239275Sgonzo /* FALLTHROUGH */ 1097239275Sgonzo 1098239275Sgonzo case USB_ST_SETUP: 1099239275Sgonzotr_setup: 1100239275Sgonzo usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 1101239275Sgonzo usbd_transfer_submit(xfer); 1102239275Sgonzo uether_rxflush(ue); 1103239275Sgonzo return; 1104239275Sgonzo 1105239275Sgonzo default: 1106239275Sgonzo if (error != USB_ERR_CANCELLED) { 1107239275Sgonzo smsc_warn_printf(sc, "bulk read error, %s\n", usbd_errstr(error)); 1108239275Sgonzo usbd_xfer_set_stall(xfer); 1109239275Sgonzo goto tr_setup; 1110239275Sgonzo } 1111239275Sgonzo return; 1112239275Sgonzo } 1113239275Sgonzo} 1114239275Sgonzo 1115239275Sgonzo/** 1116239275Sgonzo * smsc_bulk_write_callback - Write callback used to send ethernet frame(s) 1117239275Sgonzo * @xfer: the USB transfer 1118239275Sgonzo * @error: error code if the transfers is in an errored state 1119239275Sgonzo * 1120239275Sgonzo * The main write function that pulls ethernet frames off the queue and sends 1121239275Sgonzo * them out. 1122239275Sgonzo * 1123239275Sgonzo * LOCKING: 1124239275Sgonzo * 1125239275Sgonzo */ 1126239275Sgonzostatic void 1127239275Sgonzosmsc_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 1128239275Sgonzo{ 1129239275Sgonzo struct smsc_softc *sc = usbd_xfer_softc(xfer); 1130239275Sgonzo struct ifnet *ifp = uether_getifp(&sc->sc_ue); 1131239275Sgonzo struct usb_page_cache *pc; 1132239275Sgonzo struct mbuf *m; 1133239275Sgonzo uint32_t txhdr; 1134239275Sgonzo uint32_t frm_len = 0; 1135239275Sgonzo int nframes; 1136239275Sgonzo 1137239275Sgonzo switch (USB_GET_STATE(xfer)) { 1138239275Sgonzo case USB_ST_TRANSFERRED: 1139239275Sgonzo ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1140239275Sgonzo /* FALLTHROUGH */ 1141239275Sgonzo 1142239275Sgonzo case USB_ST_SETUP: 1143239275Sgonzotr_setup: 1144239275Sgonzo if ((sc->sc_flags & SMSC_FLAG_LINK) == 0 || 1145239275Sgonzo (ifp->if_drv_flags & IFF_DRV_OACTIVE) != 0) { 1146239275Sgonzo /* Don't send anything if there is no link or controller is busy. */ 1147239275Sgonzo return; 1148239275Sgonzo } 1149239275Sgonzo 1150239275Sgonzo for (nframes = 0; nframes < 16 && 1151239275Sgonzo !IFQ_DRV_IS_EMPTY(&ifp->if_snd); nframes++) { 1152239275Sgonzo IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1153239275Sgonzo if (m == NULL) 1154239275Sgonzo break; 1155239275Sgonzo usbd_xfer_set_frame_offset(xfer, nframes * MCLBYTES, 1156239275Sgonzo nframes); 1157239275Sgonzo frm_len = 0; 1158239275Sgonzo pc = usbd_xfer_get_frame(xfer, nframes); 1159239275Sgonzo 1160239275Sgonzo /* Each frame is prefixed with two 32-bit values describing the 1161239275Sgonzo * length of the packet and buffer. 1162239275Sgonzo */ 1163239275Sgonzo txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1164239275Sgonzo SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1165239275Sgonzo txhdr = htole32(txhdr); 1166239275Sgonzo usbd_copy_in(pc, 0, &txhdr, sizeof(txhdr)); 1167239275Sgonzo 1168239275Sgonzo txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1169239275Sgonzo txhdr = htole32(txhdr); 1170239275Sgonzo usbd_copy_in(pc, 4, &txhdr, sizeof(txhdr)); 1171239275Sgonzo 1172239275Sgonzo frm_len += 8; 1173239275Sgonzo 1174239275Sgonzo /* Next copy in the actual packet */ 1175239275Sgonzo usbd_m_copy_in(pc, frm_len, m, 0, m->m_pkthdr.len); 1176239275Sgonzo frm_len += m->m_pkthdr.len; 1177239275Sgonzo 1178271832Sglebius if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1179239275Sgonzo 1180239275Sgonzo /* If there's a BPF listener, bounce a copy of this frame to him */ 1181239275Sgonzo BPF_MTAP(ifp, m); 1182239275Sgonzo 1183239275Sgonzo m_freem(m); 1184239275Sgonzo 1185239275Sgonzo /* Set frame length. */ 1186239275Sgonzo usbd_xfer_set_frame_len(xfer, nframes, frm_len); 1187239275Sgonzo } 1188239275Sgonzo if (nframes != 0) { 1189239275Sgonzo usbd_xfer_set_frames(xfer, nframes); 1190239275Sgonzo usbd_transfer_submit(xfer); 1191239275Sgonzo ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1192239275Sgonzo } 1193239275Sgonzo return; 1194239275Sgonzo 1195239275Sgonzo default: 1196271832Sglebius if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1197239275Sgonzo ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1198239275Sgonzo 1199239275Sgonzo if (error != USB_ERR_CANCELLED) { 1200239275Sgonzo smsc_err_printf(sc, "usb error on tx: %s\n", usbd_errstr(error)); 1201239275Sgonzo usbd_xfer_set_stall(xfer); 1202239275Sgonzo goto tr_setup; 1203239275Sgonzo } 1204239275Sgonzo return; 1205239275Sgonzo } 1206239275Sgonzo} 1207239275Sgonzo 1208239275Sgonzo/** 1209239275Sgonzo * smsc_tick - Called periodically to monitor the state of the LAN95xx chip 1210239275Sgonzo * @ue: USB ether interface 1211239275Sgonzo * 1212239275Sgonzo * Simply calls the mii status functions to check the state of the link. 1213239275Sgonzo * 1214239275Sgonzo * LOCKING: 1215239275Sgonzo * Should be called with the SMSC lock held. 1216239275Sgonzo */ 1217239275Sgonzostatic void 1218239275Sgonzosmsc_tick(struct usb_ether *ue) 1219239275Sgonzo{ 1220239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 1221241844Seadler struct mii_data *mii = uether_getmii(&sc->sc_ue); 1222239275Sgonzo 1223239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 1224239275Sgonzo 1225239275Sgonzo mii_tick(mii); 1226239275Sgonzo if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 1227239275Sgonzo smsc_miibus_statchg(ue->ue_dev); 1228239275Sgonzo if ((sc->sc_flags & SMSC_FLAG_LINK) != 0) 1229239275Sgonzo smsc_start(ue); 1230239275Sgonzo } 1231239275Sgonzo} 1232239275Sgonzo 1233239275Sgonzo/** 1234239275Sgonzo * smsc_start - Starts communication with the LAN95xx chip 1235239275Sgonzo * @ue: USB ether interface 1236239275Sgonzo * 1237239275Sgonzo * 1238239275Sgonzo * 1239239275Sgonzo */ 1240239275Sgonzostatic void 1241239275Sgonzosmsc_start(struct usb_ether *ue) 1242239275Sgonzo{ 1243239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 1244239275Sgonzo 1245239275Sgonzo /* 1246239275Sgonzo * start the USB transfers, if not already started: 1247239275Sgonzo */ 1248239275Sgonzo usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_RD]); 1249239275Sgonzo usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_WR]); 1250239275Sgonzo} 1251239275Sgonzo 1252239275Sgonzo/** 1253239275Sgonzo * smsc_stop - Stops communication with the LAN95xx chip 1254239275Sgonzo * @ue: USB ether interface 1255239275Sgonzo * 1256239275Sgonzo * 1257239275Sgonzo * 1258239275Sgonzo */ 1259239275Sgonzostatic void 1260239275Sgonzosmsc_stop(struct usb_ether *ue) 1261239275Sgonzo{ 1262239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 1263239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 1264239275Sgonzo 1265239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 1266239275Sgonzo 1267239275Sgonzo ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 1268239275Sgonzo sc->sc_flags &= ~SMSC_FLAG_LINK; 1269239275Sgonzo 1270239275Sgonzo /* 1271239275Sgonzo * stop all the transfers, if not already stopped: 1272239275Sgonzo */ 1273239275Sgonzo usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_WR]); 1274239275Sgonzo usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_RD]); 1275239275Sgonzo} 1276239275Sgonzo 1277239275Sgonzo/** 1278239275Sgonzo * smsc_phy_init - Initialises the in-built SMSC phy 1279239275Sgonzo * @sc: driver soft context 1280239275Sgonzo * 1281239275Sgonzo * Resets the PHY part of the chip and then initialises it to default 1282239275Sgonzo * values. The 'link down' and 'auto-negotiation complete' interrupts 1283239275Sgonzo * from the PHY are also enabled, however we don't monitor the interrupt 1284239275Sgonzo * endpoints for the moment. 1285239275Sgonzo * 1286239275Sgonzo * RETURNS: 1287239275Sgonzo * Returns 0 on success or EIO if failed to reset the PHY. 1288239275Sgonzo */ 1289239275Sgonzostatic int 1290239275Sgonzosmsc_phy_init(struct smsc_softc *sc) 1291239275Sgonzo{ 1292239275Sgonzo int bmcr; 1293239275Sgonzo usb_ticks_t start_ticks; 1294240806Shselasky const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000); 1295239275Sgonzo 1296239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 1297239275Sgonzo 1298239275Sgonzo /* Reset phy and wait for reset to complete */ 1299239275Sgonzo smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, BMCR_RESET); 1300239275Sgonzo 1301239275Sgonzo start_ticks = ticks; 1302239275Sgonzo do { 1303239275Sgonzo uether_pause(&sc->sc_ue, hz / 100); 1304239275Sgonzo bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR); 1305239275Sgonzo } while ((bmcr & MII_BMCR) && ((ticks - start_ticks) < max_ticks)); 1306239275Sgonzo 1307240806Shselasky if (((usb_ticks_t)(ticks - start_ticks)) >= max_ticks) { 1308239275Sgonzo smsc_err_printf(sc, "PHY reset timed-out"); 1309239275Sgonzo return (EIO); 1310239275Sgonzo } 1311239275Sgonzo 1312239275Sgonzo smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_ANAR, 1313239275Sgonzo ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD | /* all modes */ 1314239275Sgonzo ANAR_CSMA | 1315239275Sgonzo ANAR_FC | 1316239275Sgonzo ANAR_PAUSE_ASYM); 1317239275Sgonzo 1318239275Sgonzo /* Setup the phy to interrupt when the link goes down or autoneg completes */ 1319239275Sgonzo smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_STAT); 1320239275Sgonzo smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_MASK, 1321239275Sgonzo (SMSC_PHY_INTR_ANEG_COMP | SMSC_PHY_INTR_LINK_DOWN)); 1322239275Sgonzo 1323239275Sgonzo /* Restart auto-negotation */ 1324239275Sgonzo bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR); 1325239275Sgonzo bmcr |= BMCR_STARTNEG; 1326239275Sgonzo smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, bmcr); 1327239275Sgonzo 1328239275Sgonzo return (0); 1329239275Sgonzo} 1330239275Sgonzo 1331239275Sgonzo 1332239275Sgonzo/** 1333239275Sgonzo * smsc_chip_init - Initialises the chip after power on 1334239275Sgonzo * @sc: driver soft context 1335239275Sgonzo * 1336239275Sgonzo * This initialisation sequence is modelled on the procedure in the Linux 1337239275Sgonzo * driver. 1338239275Sgonzo * 1339239275Sgonzo * RETURNS: 1340239275Sgonzo * Returns 0 on success or an error code on failure. 1341239275Sgonzo */ 1342239275Sgonzostatic int 1343239275Sgonzosmsc_chip_init(struct smsc_softc *sc) 1344239275Sgonzo{ 1345239275Sgonzo int err; 1346239275Sgonzo int locked; 1347239275Sgonzo uint32_t reg_val; 1348239275Sgonzo int burst_cap; 1349239275Sgonzo 1350239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 1351239275Sgonzo if (!locked) 1352239275Sgonzo SMSC_LOCK(sc); 1353239275Sgonzo 1354239275Sgonzo /* Enter H/W config mode */ 1355239275Sgonzo smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 1356239275Sgonzo 1357239275Sgonzo if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST)) != 0) { 1358239275Sgonzo smsc_warn_printf(sc, "timed-out waiting for reset to complete\n"); 1359239275Sgonzo goto init_failed; 1360239275Sgonzo } 1361239275Sgonzo 1362239275Sgonzo /* Reset the PHY */ 1363239275Sgonzo smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 1364239275Sgonzo 1365295608Shselasky if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST)) != 0) { 1366239275Sgonzo smsc_warn_printf(sc, "timed-out waiting for phy reset to complete\n"); 1367239275Sgonzo goto init_failed; 1368239275Sgonzo } 1369239275Sgonzo 1370239275Sgonzo /* Set the mac address */ 1371239275Sgonzo if ((err = smsc_setmacaddress(sc, sc->sc_ue.ue_eaddr)) != 0) { 1372239275Sgonzo smsc_warn_printf(sc, "failed to set the MAC address\n"); 1373239275Sgonzo goto init_failed; 1374239275Sgonzo } 1375239275Sgonzo 1376239275Sgonzo /* Don't know what the HW_CFG_BIR bit is, but following the reset sequence 1377239275Sgonzo * as used in the Linux driver. 1378239275Sgonzo */ 1379239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 1380239275Sgonzo smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 1381239275Sgonzo goto init_failed; 1382239275Sgonzo } 1383239275Sgonzo reg_val |= SMSC_HW_CFG_BIR; 1384239275Sgonzo smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 1385239275Sgonzo 1386239275Sgonzo /* There is a so called 'turbo mode' that the linux driver supports, it 1387239275Sgonzo * seems to allow you to jam multiple frames per Rx transaction. By default 1388239275Sgonzo * this driver supports that and therefore allows multiple frames per URB. 1389239275Sgonzo * 1390239275Sgonzo * The xfer buffer size needs to reflect this as well, therefore based on 1391239275Sgonzo * the calculations in the Linux driver the RX bufsize is set to 18944, 1392239275Sgonzo * bufsz = (16 * 1024 + 5 * 512) 1393239275Sgonzo * 1394239275Sgonzo * Burst capability is the number of URBs that can be in a burst of data/ 1395239275Sgonzo * ethernet frames. 1396239275Sgonzo */ 1397239275Sgonzo if (usbd_get_speed(sc->sc_ue.ue_udev) == USB_SPEED_HIGH) 1398239275Sgonzo burst_cap = 37; 1399239275Sgonzo else 1400239275Sgonzo burst_cap = 128; 1401239275Sgonzo 1402239275Sgonzo smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 1403239275Sgonzo 1404239275Sgonzo /* Set the default bulk in delay (magic value from Linux driver) */ 1405239275Sgonzo smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 1406239275Sgonzo 1407239275Sgonzo 1408239275Sgonzo 1409239275Sgonzo /* 1410239275Sgonzo * Initialise the RX interface 1411239275Sgonzo */ 1412239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 1413239275Sgonzo smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", err); 1414239275Sgonzo goto init_failed; 1415239275Sgonzo } 1416239275Sgonzo 1417239275Sgonzo /* Adjust the packet offset in the buffer (designed to try and align IP 1418239275Sgonzo * header on 4 byte boundary) 1419239275Sgonzo */ 1420239275Sgonzo reg_val &= ~SMSC_HW_CFG_RXDOFF; 1421239275Sgonzo reg_val |= (ETHER_ALIGN << 9) & SMSC_HW_CFG_RXDOFF; 1422239275Sgonzo 1423239275Sgonzo /* The following setings are used for 'turbo mode', a.k.a multiple frames 1424239275Sgonzo * per Rx transaction (again info taken form Linux driver). 1425239275Sgonzo */ 1426239275Sgonzo reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 1427239275Sgonzo 1428239275Sgonzo smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 1429239275Sgonzo 1430239275Sgonzo /* Clear the status register ? */ 1431239275Sgonzo smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 1432239275Sgonzo 1433239275Sgonzo /* Read and display the revision register */ 1434239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 1435239275Sgonzo smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 1436239275Sgonzo goto init_failed; 1437239275Sgonzo } 1438239275Sgonzo 1439239275Sgonzo device_printf(sc->sc_ue.ue_dev, "chip 0x%04lx, rev. %04lx\n", 1440239275Sgonzo (sc->sc_rev_id & SMSC_ID_REV_CHIP_ID_MASK) >> 16, 1441239275Sgonzo (sc->sc_rev_id & SMSC_ID_REV_CHIP_REV_MASK)); 1442239275Sgonzo 1443239275Sgonzo /* GPIO/LED setup */ 1444239275Sgonzo reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 1445239275Sgonzo SMSC_LED_GPIO_CFG_FDX_LED; 1446239275Sgonzo smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 1447239275Sgonzo 1448239275Sgonzo /* 1449239275Sgonzo * Initialise the TX interface 1450239275Sgonzo */ 1451239275Sgonzo smsc_write_reg(sc, SMSC_FLOW, 0); 1452239275Sgonzo 1453239275Sgonzo smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 1454239275Sgonzo 1455239275Sgonzo /* Read the current MAC configuration */ 1456239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 1457239275Sgonzo smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 1458239275Sgonzo goto init_failed; 1459239275Sgonzo } 1460239275Sgonzo 1461239275Sgonzo /* Vlan */ 1462239275Sgonzo smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 1463239275Sgonzo 1464239275Sgonzo /* 1465239275Sgonzo * Initialise the PHY 1466239275Sgonzo */ 1467239275Sgonzo if ((err = smsc_phy_init(sc)) != 0) 1468239275Sgonzo goto init_failed; 1469239275Sgonzo 1470239275Sgonzo 1471239275Sgonzo /* 1472239275Sgonzo * Start TX 1473239275Sgonzo */ 1474239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 1475239275Sgonzo smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 1476239275Sgonzo smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 1477239275Sgonzo 1478239275Sgonzo /* 1479239275Sgonzo * Start RX 1480239275Sgonzo */ 1481239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 1482239275Sgonzo smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 1483239275Sgonzo 1484239275Sgonzo if (!locked) 1485239275Sgonzo SMSC_UNLOCK(sc); 1486239275Sgonzo 1487239275Sgonzo return (0); 1488239275Sgonzo 1489239275Sgonzoinit_failed: 1490239275Sgonzo if (!locked) 1491239275Sgonzo SMSC_UNLOCK(sc); 1492239275Sgonzo 1493239275Sgonzo smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 1494239275Sgonzo return (err); 1495239275Sgonzo} 1496239275Sgonzo 1497239275Sgonzo 1498239275Sgonzo/** 1499239275Sgonzo * smsc_ioctl - ioctl function for the device 1500239275Sgonzo * @ifp: interface pointer 1501239275Sgonzo * @cmd: the ioctl command 1502239275Sgonzo * @data: data passed in the ioctl call, typically a pointer to struct ifreq. 1503239275Sgonzo * 1504239275Sgonzo * The ioctl routine is overridden to detect change requests for the H/W 1505239275Sgonzo * checksum capabilities. 1506239275Sgonzo * 1507239275Sgonzo * RETURNS: 1508239275Sgonzo * 0 on success and an error code on failure. 1509239275Sgonzo */ 1510239275Sgonzostatic int 1511239275Sgonzosmsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1512239275Sgonzo{ 1513239275Sgonzo struct usb_ether *ue = ifp->if_softc; 1514239275Sgonzo struct smsc_softc *sc; 1515239275Sgonzo struct ifreq *ifr; 1516239275Sgonzo int rc; 1517239275Sgonzo int mask; 1518239275Sgonzo int reinit; 1519239275Sgonzo 1520239275Sgonzo if (cmd == SIOCSIFCAP) { 1521239275Sgonzo 1522239275Sgonzo sc = uether_getsc(ue); 1523239275Sgonzo ifr = (struct ifreq *)data; 1524239275Sgonzo 1525239275Sgonzo SMSC_LOCK(sc); 1526239275Sgonzo 1527239275Sgonzo rc = 0; 1528239275Sgonzo reinit = 0; 1529239275Sgonzo 1530239275Sgonzo mask = ifr->ifr_reqcap ^ ifp->if_capenable; 1531239275Sgonzo 1532239275Sgonzo /* Modify the RX CSUM enable bits */ 1533239275Sgonzo if ((mask & IFCAP_RXCSUM) != 0 && 1534239275Sgonzo (ifp->if_capabilities & IFCAP_RXCSUM) != 0) { 1535239275Sgonzo ifp->if_capenable ^= IFCAP_RXCSUM; 1536239275Sgonzo 1537239275Sgonzo if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1538239275Sgonzo ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1539239275Sgonzo reinit = 1; 1540239275Sgonzo } 1541239275Sgonzo } 1542239275Sgonzo 1543239275Sgonzo SMSC_UNLOCK(sc); 1544239275Sgonzo if (reinit) 1545239275Sgonzo#if __FreeBSD_version > 1000000 1546239275Sgonzo uether_init(ue); 1547239275Sgonzo#else 1548239275Sgonzo ifp->if_init(ue); 1549239275Sgonzo#endif 1550239275Sgonzo 1551239275Sgonzo } else { 1552239275Sgonzo rc = uether_ioctl(ifp, cmd, data); 1553239275Sgonzo } 1554239275Sgonzo 1555239275Sgonzo return (rc); 1556239275Sgonzo} 1557239275Sgonzo 1558243421Sgonzo#ifdef FDT 1559273546Sloosstatic phandle_t 1560273546Sloossmsc_fdt_find_eth_node(phandle_t start) 1561273546Sloos{ 1562273546Sloos phandle_t child, node; 1563273546Sloos 1564273546Sloos /* Traverse through entire tree to find usb ethernet nodes. */ 1565273546Sloos for (node = OF_child(start); node != 0; node = OF_peer(node)) { 1566273546Sloos if (fdt_is_compatible(node, "net,ethernet") && 1567273546Sloos fdt_is_compatible(node, "usb,device")) 1568273546Sloos return (node); 1569273546Sloos child = smsc_fdt_find_eth_node(node); 1570273546Sloos if (child != 0) 1571273546Sloos return (child); 1572273546Sloos } 1573273546Sloos 1574273546Sloos return (0); 1575273546Sloos} 1576273546Sloos 1577243421Sgonzo/** 1578273546Sloos * Get MAC address from FDT blob. Firmware or loader should fill 1579273546Sloos * mac-address or local-mac-address property. Returns 0 if MAC address 1580273546Sloos * obtained, error code otherwise. 1581243421Sgonzo */ 1582243421Sgonzostatic int 1583243421Sgonzosmsc_fdt_find_mac(unsigned char *mac) 1584243421Sgonzo{ 1585273546Sloos phandle_t node, root; 1586243421Sgonzo int len; 1587239275Sgonzo 1588243421Sgonzo root = OF_finddevice("/"); 1589273546Sloos node = smsc_fdt_find_eth_node(root); 1590273546Sloos if (node != 0) { 1591243421Sgonzo 1592273546Sloos /* Check if there is property */ 1593273546Sloos if ((len = OF_getproplen(node, "local-mac-address")) > 0) { 1594273546Sloos if (len != ETHER_ADDR_LEN) 1595273546Sloos return (EINVAL); 1596243421Sgonzo 1597273546Sloos OF_getprop(node, "local-mac-address", mac, 1598273546Sloos ETHER_ADDR_LEN); 1599273546Sloos return (0); 1600243421Sgonzo } 1601243421Sgonzo 1602273546Sloos if ((len = OF_getproplen(node, "mac-address")) > 0) { 1603273546Sloos if (len != ETHER_ADDR_LEN) 1604273546Sloos return (EINVAL); 1605243421Sgonzo 1606273546Sloos OF_getprop(node, "mac-address", mac, 1607273546Sloos ETHER_ADDR_LEN); 1608273546Sloos return (0); 1609243421Sgonzo } 1610243421Sgonzo } 1611243421Sgonzo 1612243421Sgonzo return (ENXIO); 1613243421Sgonzo} 1614243421Sgonzo#endif 1615243421Sgonzo 1616239275Sgonzo/** 1617239275Sgonzo * smsc_attach_post - Called after the driver attached to the USB interface 1618239275Sgonzo * @ue: the USB ethernet device 1619239275Sgonzo * 1620239275Sgonzo * This is where the chip is intialised for the first time. This is different 1621239275Sgonzo * from the smsc_init() function in that that one is designed to setup the 1622239275Sgonzo * H/W to match the UE settings and can be called after a reset. 1623239275Sgonzo * 1624239275Sgonzo * 1625239275Sgonzo */ 1626239275Sgonzostatic void 1627239275Sgonzosmsc_attach_post(struct usb_ether *ue) 1628239275Sgonzo{ 1629239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 1630239275Sgonzo uint32_t mac_h, mac_l; 1631239275Sgonzo int err; 1632239275Sgonzo 1633239275Sgonzo smsc_dbg_printf(sc, "smsc_attach_post\n"); 1634239275Sgonzo 1635239275Sgonzo /* Setup some of the basics */ 1636239275Sgonzo sc->sc_phyno = 1; 1637239275Sgonzo 1638239275Sgonzo 1639239275Sgonzo /* Attempt to get the mac address, if an EEPROM is not attached this 1640239275Sgonzo * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1641239275Sgonzo * address based on urandom. 1642239275Sgonzo */ 1643239275Sgonzo memset(sc->sc_ue.ue_eaddr, 0xff, ETHER_ADDR_LEN); 1644239275Sgonzo 1645239275Sgonzo /* Check if there is already a MAC address in the register */ 1646239275Sgonzo if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1647239275Sgonzo (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1648239275Sgonzo sc->sc_ue.ue_eaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1649239275Sgonzo sc->sc_ue.ue_eaddr[4] = (uint8_t)((mac_h) & 0xff); 1650239275Sgonzo sc->sc_ue.ue_eaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1651239275Sgonzo sc->sc_ue.ue_eaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1652239275Sgonzo sc->sc_ue.ue_eaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1653239275Sgonzo sc->sc_ue.ue_eaddr[0] = (uint8_t)((mac_l) & 0xff); 1654239275Sgonzo } 1655239275Sgonzo 1656239275Sgonzo /* MAC address is not set so try to read from EEPROM, if that fails generate 1657239275Sgonzo * a random MAC address. 1658239275Sgonzo */ 1659239275Sgonzo if (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)) { 1660239275Sgonzo 1661239275Sgonzo err = smsc_eeprom_read(sc, 0x01, sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN); 1662243421Sgonzo#ifdef FDT 1663243421Sgonzo if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) 1664243421Sgonzo err = smsc_fdt_find_mac(sc->sc_ue.ue_eaddr); 1665243421Sgonzo#endif 1666239275Sgonzo if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) { 1667239275Sgonzo read_random(sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN); 1668239275Sgonzo sc->sc_ue.ue_eaddr[0] &= ~0x01; /* unicast */ 1669239275Sgonzo sc->sc_ue.ue_eaddr[0] |= 0x02; /* locally administered */ 1670239275Sgonzo } 1671239275Sgonzo } 1672239275Sgonzo 1673239275Sgonzo /* Initialise the chip for the first time */ 1674239275Sgonzo smsc_chip_init(sc); 1675239275Sgonzo} 1676239275Sgonzo 1677239275Sgonzo 1678239275Sgonzo/** 1679239275Sgonzo * smsc_attach_post_sub - Called after the driver attached to the USB interface 1680239275Sgonzo * @ue: the USB ethernet device 1681239275Sgonzo * 1682239275Sgonzo * Most of this is boilerplate code and copied from the base USB ethernet 1683239275Sgonzo * driver. It has been overriden so that we can indicate to the system that 1684239275Sgonzo * the chip supports H/W checksumming. 1685239275Sgonzo * 1686239275Sgonzo * RETURNS: 1687239275Sgonzo * Returns 0 on success or a negative error code. 1688239275Sgonzo */ 1689239275Sgonzo#if __FreeBSD_version > 1000000 1690239275Sgonzostatic int 1691239275Sgonzosmsc_attach_post_sub(struct usb_ether *ue) 1692239275Sgonzo{ 1693239275Sgonzo struct smsc_softc *sc; 1694239275Sgonzo struct ifnet *ifp; 1695239275Sgonzo int error; 1696239275Sgonzo 1697239275Sgonzo sc = uether_getsc(ue); 1698239275Sgonzo ifp = ue->ue_ifp; 1699239275Sgonzo ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1700239275Sgonzo ifp->if_start = uether_start; 1701239275Sgonzo ifp->if_ioctl = smsc_ioctl; 1702239275Sgonzo ifp->if_init = uether_init; 1703239275Sgonzo IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 1704239275Sgonzo ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 1705239275Sgonzo IFQ_SET_READY(&ifp->if_snd); 1706239275Sgonzo 1707239275Sgonzo /* The chip supports TCP/UDP checksum offloading on TX and RX paths, however 1708239275Sgonzo * currently only RX checksum is supported in the driver (see top of file). 1709239275Sgonzo */ 1710291953Shselasky ifp->if_capabilities |= IFCAP_RXCSUM | IFCAP_VLAN_MTU; 1711239275Sgonzo ifp->if_hwassist = 0; 1712239275Sgonzo 1713239275Sgonzo /* TX checksuming is disabled (for now?) 1714239275Sgonzo ifp->if_capabilities |= IFCAP_TXCSUM; 1715239275Sgonzo ifp->if_capenable |= IFCAP_TXCSUM; 1716239275Sgonzo ifp->if_hwassist = CSUM_TCP | CSUM_UDP; 1717239275Sgonzo */ 1718239275Sgonzo 1719239275Sgonzo ifp->if_capenable = ifp->if_capabilities; 1720239275Sgonzo 1721239275Sgonzo mtx_lock(&Giant); 1722239275Sgonzo error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp, 1723239275Sgonzo uether_ifmedia_upd, ue->ue_methods->ue_mii_sts, 1724239275Sgonzo BMSR_DEFCAPMASK, sc->sc_phyno, MII_OFFSET_ANY, 0); 1725239275Sgonzo mtx_unlock(&Giant); 1726239275Sgonzo 1727239275Sgonzo return (error); 1728239275Sgonzo} 1729239275Sgonzo#endif /* __FreeBSD_version > 1000000 */ 1730239275Sgonzo 1731239275Sgonzo 1732239275Sgonzo/** 1733239275Sgonzo * smsc_probe - Probe the interface. 1734239275Sgonzo * @dev: smsc device handle 1735239275Sgonzo * 1736239275Sgonzo * Checks if the device is a match for this driver. 1737239275Sgonzo * 1738239275Sgonzo * RETURNS: 1739239275Sgonzo * Returns 0 on success or an error code on failure. 1740239275Sgonzo */ 1741239275Sgonzostatic int 1742239275Sgonzosmsc_probe(device_t dev) 1743239275Sgonzo{ 1744239275Sgonzo struct usb_attach_arg *uaa = device_get_ivars(dev); 1745239275Sgonzo 1746239275Sgonzo if (uaa->usb_mode != USB_MODE_HOST) 1747239275Sgonzo return (ENXIO); 1748239275Sgonzo if (uaa->info.bConfigIndex != SMSC_CONFIG_INDEX) 1749239275Sgonzo return (ENXIO); 1750239275Sgonzo if (uaa->info.bIfaceIndex != SMSC_IFACE_IDX) 1751239275Sgonzo return (ENXIO); 1752239275Sgonzo 1753239275Sgonzo return (usbd_lookup_id_by_uaa(smsc_devs, sizeof(smsc_devs), uaa)); 1754239275Sgonzo} 1755239275Sgonzo 1756239275Sgonzo 1757239275Sgonzo/** 1758239275Sgonzo * smsc_attach - Attach the interface. 1759239275Sgonzo * @dev: smsc device handle 1760239275Sgonzo * 1761239275Sgonzo * Allocate softc structures, do ifmedia setup and ethernet/BPF attach. 1762239275Sgonzo * 1763239275Sgonzo * RETURNS: 1764239275Sgonzo * Returns 0 on success or a negative error code. 1765239275Sgonzo */ 1766239275Sgonzostatic int 1767239275Sgonzosmsc_attach(device_t dev) 1768239275Sgonzo{ 1769239275Sgonzo struct usb_attach_arg *uaa = device_get_ivars(dev); 1770239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 1771239275Sgonzo struct usb_ether *ue = &sc->sc_ue; 1772239275Sgonzo uint8_t iface_index; 1773239275Sgonzo int err; 1774239275Sgonzo 1775239275Sgonzo sc->sc_flags = USB_GET_DRIVER_INFO(uaa); 1776239275Sgonzo 1777239275Sgonzo device_set_usb_desc(dev); 1778239275Sgonzo 1779239275Sgonzo mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 1780239275Sgonzo 1781239275Sgonzo /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1782239275Sgonzo iface_index = SMSC_IFACE_IDX; 1783239275Sgonzo err = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer, 1784239275Sgonzo smsc_config, SMSC_N_TRANSFER, sc, &sc->sc_mtx); 1785239275Sgonzo if (err) { 1786239275Sgonzo device_printf(dev, "error: allocating USB transfers failed\n"); 1787239275Sgonzo goto detach; 1788239275Sgonzo } 1789239275Sgonzo 1790239275Sgonzo ue->ue_sc = sc; 1791239275Sgonzo ue->ue_dev = dev; 1792239275Sgonzo ue->ue_udev = uaa->device; 1793239275Sgonzo ue->ue_mtx = &sc->sc_mtx; 1794239275Sgonzo ue->ue_methods = &smsc_ue_methods; 1795239275Sgonzo 1796239275Sgonzo err = uether_ifattach(ue); 1797239275Sgonzo if (err) { 1798239275Sgonzo device_printf(dev, "error: could not attach interface\n"); 1799239275Sgonzo goto detach; 1800239275Sgonzo } 1801239275Sgonzo return (0); /* success */ 1802239275Sgonzo 1803239275Sgonzodetach: 1804239275Sgonzo smsc_detach(dev); 1805239275Sgonzo return (ENXIO); /* failure */ 1806239275Sgonzo} 1807239275Sgonzo 1808239275Sgonzo/** 1809239275Sgonzo * smsc_detach - Detach the interface. 1810239275Sgonzo * @dev: smsc device handle 1811239275Sgonzo * 1812239275Sgonzo * RETURNS: 1813239275Sgonzo * Returns 0. 1814239275Sgonzo */ 1815239275Sgonzostatic int 1816239275Sgonzosmsc_detach(device_t dev) 1817239275Sgonzo{ 1818239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 1819239275Sgonzo struct usb_ether *ue = &sc->sc_ue; 1820239275Sgonzo 1821239275Sgonzo usbd_transfer_unsetup(sc->sc_xfer, SMSC_N_TRANSFER); 1822239275Sgonzo uether_ifdetach(ue); 1823239275Sgonzo mtx_destroy(&sc->sc_mtx); 1824239275Sgonzo 1825239275Sgonzo return (0); 1826239275Sgonzo} 1827239275Sgonzo 1828239275Sgonzostatic device_method_t smsc_methods[] = { 1829239275Sgonzo /* Device interface */ 1830239275Sgonzo DEVMETHOD(device_probe, smsc_probe), 1831239275Sgonzo DEVMETHOD(device_attach, smsc_attach), 1832239275Sgonzo DEVMETHOD(device_detach, smsc_detach), 1833239275Sgonzo 1834239275Sgonzo /* bus interface */ 1835239275Sgonzo DEVMETHOD(bus_print_child, bus_generic_print_child), 1836239275Sgonzo DEVMETHOD(bus_driver_added, bus_generic_driver_added), 1837239275Sgonzo 1838239275Sgonzo /* MII interface */ 1839239275Sgonzo DEVMETHOD(miibus_readreg, smsc_miibus_readreg), 1840239275Sgonzo DEVMETHOD(miibus_writereg, smsc_miibus_writereg), 1841239275Sgonzo DEVMETHOD(miibus_statchg, smsc_miibus_statchg), 1842239275Sgonzo 1843246128Ssbz DEVMETHOD_END 1844239275Sgonzo}; 1845239275Sgonzo 1846239275Sgonzostatic driver_t smsc_driver = { 1847239275Sgonzo .name = "smsc", 1848239275Sgonzo .methods = smsc_methods, 1849239275Sgonzo .size = sizeof(struct smsc_softc), 1850239275Sgonzo}; 1851239275Sgonzo 1852239275Sgonzostatic devclass_t smsc_devclass; 1853239275Sgonzo 1854239275SgonzoDRIVER_MODULE(smsc, uhub, smsc_driver, smsc_devclass, NULL, 0); 1855239275SgonzoDRIVER_MODULE(miibus, smsc, miibus_driver, miibus_devclass, 0, 0); 1856239275SgonzoMODULE_DEPEND(smsc, uether, 1, 1, 1); 1857239275SgonzoMODULE_DEPEND(smsc, usb, 1, 1, 1); 1858239275SgonzoMODULE_DEPEND(smsc, ether, 1, 1, 1); 1859239275SgonzoMODULE_DEPEND(smsc, miibus, 1, 1, 1); 1860239275SgonzoMODULE_VERSION(smsc, 1); 1861292080SimpUSB_PNP_HOST_INFO(smsc_devs); 1862