if_smsc.c revision 271832
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: head/sys/dev/usb/net/if_smsc.c 271832 2014-09-18 21:09:22Z glebius $"); 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"); 117239275SgonzoSYSCTL_INT(_hw_usb_smsc, OID_AUTO, debug, CTLFLAG_RW, &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) } 126239275Sgonzo SMSC_DEV(LAN9514_ETH, 0), 127239275Sgonzo#undef SMSC_DEV 128239275Sgonzo}; 129239275Sgonzo 130239275Sgonzo 131239275Sgonzo#ifdef USB_DEBUG 132239275Sgonzo#define smsc_dbg_printf(sc, fmt, args...) \ 133239275Sgonzo do { \ 134239275Sgonzo if (smsc_debug > 0) \ 135239275Sgonzo device_printf((sc)->sc_ue.ue_dev, "debug: " fmt, ##args); \ 136239275Sgonzo } while(0) 137239275Sgonzo#else 138239275Sgonzo#define smsc_dbg_printf(sc, fmt, args...) 139239275Sgonzo#endif 140239275Sgonzo 141239275Sgonzo#define smsc_warn_printf(sc, fmt, args...) \ 142239275Sgonzo device_printf((sc)->sc_ue.ue_dev, "warning: " fmt, ##args) 143239275Sgonzo 144239275Sgonzo#define smsc_err_printf(sc, fmt, args...) \ 145239275Sgonzo device_printf((sc)->sc_ue.ue_dev, "error: " fmt, ##args) 146239275Sgonzo 147239275Sgonzo 148239275Sgonzo#define ETHER_IS_ZERO(addr) \ 149239275Sgonzo (!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5])) 150239275Sgonzo 151239275Sgonzo#define ETHER_IS_VALID(addr) \ 152239275Sgonzo (!ETHER_IS_MULTICAST(addr) && !ETHER_IS_ZERO(addr)) 153239275Sgonzo 154239275Sgonzostatic device_probe_t smsc_probe; 155239275Sgonzostatic device_attach_t smsc_attach; 156239275Sgonzostatic device_detach_t smsc_detach; 157239275Sgonzo 158239275Sgonzostatic usb_callback_t smsc_bulk_read_callback; 159239275Sgonzostatic usb_callback_t smsc_bulk_write_callback; 160239275Sgonzo 161239275Sgonzostatic miibus_readreg_t smsc_miibus_readreg; 162239275Sgonzostatic miibus_writereg_t smsc_miibus_writereg; 163239275Sgonzostatic miibus_statchg_t smsc_miibus_statchg; 164239275Sgonzo 165239275Sgonzo#if __FreeBSD_version > 1000000 166239275Sgonzostatic int smsc_attach_post_sub(struct usb_ether *ue); 167239275Sgonzo#endif 168239275Sgonzostatic uether_fn_t smsc_attach_post; 169239275Sgonzostatic uether_fn_t smsc_init; 170239275Sgonzostatic uether_fn_t smsc_stop; 171239275Sgonzostatic uether_fn_t smsc_start; 172239275Sgonzostatic uether_fn_t smsc_tick; 173239275Sgonzostatic uether_fn_t smsc_setmulti; 174239275Sgonzostatic uether_fn_t smsc_setpromisc; 175239275Sgonzo 176239275Sgonzostatic int smsc_ifmedia_upd(struct ifnet *); 177239275Sgonzostatic void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *); 178239275Sgonzo 179239275Sgonzostatic int smsc_chip_init(struct smsc_softc *sc); 180239275Sgonzostatic int smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data); 181239275Sgonzo 182239275Sgonzostatic const struct usb_config smsc_config[SMSC_N_TRANSFER] = { 183239275Sgonzo 184239275Sgonzo [SMSC_BULK_DT_WR] = { 185239275Sgonzo .type = UE_BULK, 186239275Sgonzo .endpoint = UE_ADDR_ANY, 187239275Sgonzo .direction = UE_DIR_OUT, 188239275Sgonzo .frames = 16, 189239275Sgonzo .bufsize = 16 * (MCLBYTES + 16), 190239275Sgonzo .flags = {.pipe_bof = 1,.force_short_xfer = 1,}, 191239275Sgonzo .callback = smsc_bulk_write_callback, 192239275Sgonzo .timeout = 10000, /* 10 seconds */ 193239275Sgonzo }, 194239275Sgonzo 195239275Sgonzo [SMSC_BULK_DT_RD] = { 196239275Sgonzo .type = UE_BULK, 197239275Sgonzo .endpoint = UE_ADDR_ANY, 198239275Sgonzo .direction = UE_DIR_IN, 199239275Sgonzo .bufsize = 20480, /* bytes */ 200239275Sgonzo .flags = {.pipe_bof = 1,.short_xfer_ok = 1,}, 201239275Sgonzo .callback = smsc_bulk_read_callback, 202239275Sgonzo .timeout = 0, /* no timeout */ 203239275Sgonzo }, 204239275Sgonzo 205239275Sgonzo /* The SMSC chip supports an interrupt endpoints, however they aren't 206239275Sgonzo * needed as we poll on the MII status. 207239275Sgonzo */ 208239275Sgonzo}; 209239275Sgonzo 210239275Sgonzostatic const struct usb_ether_methods smsc_ue_methods = { 211239275Sgonzo .ue_attach_post = smsc_attach_post, 212239275Sgonzo#if __FreeBSD_version > 1000000 213239275Sgonzo .ue_attach_post_sub = smsc_attach_post_sub, 214239275Sgonzo#endif 215239275Sgonzo .ue_start = smsc_start, 216239275Sgonzo .ue_ioctl = smsc_ioctl, 217239275Sgonzo .ue_init = smsc_init, 218239275Sgonzo .ue_stop = smsc_stop, 219239275Sgonzo .ue_tick = smsc_tick, 220239275Sgonzo .ue_setmulti = smsc_setmulti, 221239275Sgonzo .ue_setpromisc = smsc_setpromisc, 222239275Sgonzo .ue_mii_upd = smsc_ifmedia_upd, 223239275Sgonzo .ue_mii_sts = smsc_ifmedia_sts, 224239275Sgonzo}; 225239275Sgonzo 226239275Sgonzo/** 227239275Sgonzo * smsc_read_reg - Reads a 32-bit register on the device 228239275Sgonzo * @sc: driver soft context 229239275Sgonzo * @off: offset of the register 230239275Sgonzo * @data: pointer a value that will be populated with the register value 231239275Sgonzo * 232239275Sgonzo * LOCKING: 233239275Sgonzo * The device lock must be held before calling this function. 234239275Sgonzo * 235239275Sgonzo * RETURNS: 236239275Sgonzo * 0 on success, a USB_ERR_?? error code on failure. 237239275Sgonzo */ 238239275Sgonzostatic int 239239275Sgonzosmsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data) 240239275Sgonzo{ 241239275Sgonzo struct usb_device_request req; 242239275Sgonzo uint32_t buf; 243239275Sgonzo usb_error_t err; 244239275Sgonzo 245239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 246239275Sgonzo 247239275Sgonzo req.bmRequestType = UT_READ_VENDOR_DEVICE; 248239275Sgonzo req.bRequest = SMSC_UR_READ_REG; 249239275Sgonzo USETW(req.wValue, 0); 250239275Sgonzo USETW(req.wIndex, off); 251239275Sgonzo USETW(req.wLength, 4); 252239275Sgonzo 253239275Sgonzo err = uether_do_request(&sc->sc_ue, &req, &buf, 1000); 254239275Sgonzo if (err != 0) 255239275Sgonzo smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off); 256239275Sgonzo 257239275Sgonzo *data = le32toh(buf); 258239275Sgonzo 259239275Sgonzo return (err); 260239275Sgonzo} 261239275Sgonzo 262239275Sgonzo/** 263239275Sgonzo * smsc_write_reg - Writes a 32-bit register on the device 264239275Sgonzo * @sc: driver soft context 265239275Sgonzo * @off: offset of the register 266239275Sgonzo * @data: the 32-bit value to write into the register 267239275Sgonzo * 268239275Sgonzo * LOCKING: 269239275Sgonzo * The device lock must be held before calling this function. 270239275Sgonzo * 271239275Sgonzo * RETURNS: 272239275Sgonzo * 0 on success, a USB_ERR_?? error code on failure. 273239275Sgonzo */ 274239275Sgonzostatic int 275239275Sgonzosmsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data) 276239275Sgonzo{ 277239275Sgonzo struct usb_device_request req; 278239275Sgonzo uint32_t buf; 279239275Sgonzo usb_error_t err; 280239275Sgonzo 281239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 282239275Sgonzo 283239275Sgonzo buf = htole32(data); 284239275Sgonzo 285239275Sgonzo req.bmRequestType = UT_WRITE_VENDOR_DEVICE; 286239275Sgonzo req.bRequest = SMSC_UR_WRITE_REG; 287239275Sgonzo USETW(req.wValue, 0); 288239275Sgonzo USETW(req.wIndex, off); 289239275Sgonzo USETW(req.wLength, 4); 290239275Sgonzo 291239275Sgonzo err = uether_do_request(&sc->sc_ue, &req, &buf, 1000); 292239275Sgonzo if (err != 0) 293239275Sgonzo smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off); 294239275Sgonzo 295239275Sgonzo return (err); 296239275Sgonzo} 297239275Sgonzo 298239275Sgonzo/** 299239275Sgonzo * smsc_wait_for_bits - Polls on a register value until bits are cleared 300239275Sgonzo * @sc: soft context 301239275Sgonzo * @reg: offset of the register 302239275Sgonzo * @bits: if the bits are clear the function returns 303239275Sgonzo * 304239275Sgonzo * LOCKING: 305239275Sgonzo * The device lock must be held before calling this function. 306239275Sgonzo * 307239275Sgonzo * RETURNS: 308239275Sgonzo * 0 on success, or a USB_ERR_?? error code on failure. 309239275Sgonzo */ 310239275Sgonzostatic int 311239275Sgonzosmsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits) 312239275Sgonzo{ 313239275Sgonzo usb_ticks_t start_ticks; 314240804Shselasky const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000); 315239275Sgonzo uint32_t val; 316239275Sgonzo int err; 317239275Sgonzo 318239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 319239275Sgonzo 320239275Sgonzo start_ticks = (usb_ticks_t)ticks; 321239275Sgonzo do { 322239275Sgonzo if ((err = smsc_read_reg(sc, reg, &val)) != 0) 323239275Sgonzo return (err); 324239275Sgonzo if (!(val & bits)) 325239275Sgonzo return (0); 326239275Sgonzo 327239275Sgonzo uether_pause(&sc->sc_ue, hz / 100); 328240804Shselasky } while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks); 329239275Sgonzo 330239275Sgonzo return (USB_ERR_TIMEOUT); 331239275Sgonzo} 332239275Sgonzo 333239275Sgonzo/** 334239275Sgonzo * smsc_eeprom_read - Reads the attached EEPROM 335239275Sgonzo * @sc: soft context 336239275Sgonzo * @off: the eeprom address offset 337239275Sgonzo * @buf: stores the bytes 338239275Sgonzo * @buflen: the number of bytes to read 339239275Sgonzo * 340239275Sgonzo * Simply reads bytes from an attached eeprom. 341239275Sgonzo * 342239275Sgonzo * LOCKING: 343239275Sgonzo * The function takes and releases the device lock if it is not already held. 344239275Sgonzo * 345239275Sgonzo * RETURNS: 346239275Sgonzo * 0 on success, or a USB_ERR_?? error code on failure. 347239275Sgonzo */ 348239275Sgonzostatic int 349239275Sgonzosmsc_eeprom_read(struct smsc_softc *sc, uint16_t off, uint8_t *buf, uint16_t buflen) 350239275Sgonzo{ 351239275Sgonzo usb_ticks_t start_ticks; 352240806Shselasky const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000); 353239275Sgonzo int err; 354239275Sgonzo int locked; 355239275Sgonzo uint32_t val; 356239275Sgonzo uint16_t i; 357239275Sgonzo 358239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 359239275Sgonzo if (!locked) 360239275Sgonzo SMSC_LOCK(sc); 361239275Sgonzo 362239275Sgonzo err = smsc_wait_for_bits(sc, SMSC_EEPROM_CMD, SMSC_EEPROM_CMD_BUSY); 363239275Sgonzo if (err != 0) { 364239275Sgonzo smsc_warn_printf(sc, "eeprom busy, failed to read data\n"); 365239275Sgonzo goto done; 366239275Sgonzo } 367239275Sgonzo 368239275Sgonzo /* start reading the bytes, one at a time */ 369239275Sgonzo for (i = 0; i < buflen; i++) { 370239275Sgonzo 371239275Sgonzo val = SMSC_EEPROM_CMD_BUSY | (SMSC_EEPROM_CMD_ADDR_MASK & (off + i)); 372239275Sgonzo if ((err = smsc_write_reg(sc, SMSC_EEPROM_CMD, val)) != 0) 373239275Sgonzo goto done; 374239275Sgonzo 375239275Sgonzo start_ticks = (usb_ticks_t)ticks; 376239275Sgonzo do { 377239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_EEPROM_CMD, &val)) != 0) 378239275Sgonzo goto done; 379239275Sgonzo if (!(val & SMSC_EEPROM_CMD_BUSY) || (val & SMSC_EEPROM_CMD_TIMEOUT)) 380239275Sgonzo break; 381239275Sgonzo 382239275Sgonzo uether_pause(&sc->sc_ue, hz / 100); 383240806Shselasky } while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks); 384240806Shselasky 385239275Sgonzo if (val & (SMSC_EEPROM_CMD_BUSY | SMSC_EEPROM_CMD_TIMEOUT)) { 386239275Sgonzo smsc_warn_printf(sc, "eeprom command failed\n"); 387239275Sgonzo err = USB_ERR_IOERROR; 388239275Sgonzo break; 389239275Sgonzo } 390239275Sgonzo 391239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_EEPROM_DATA, &val)) != 0) 392239275Sgonzo goto done; 393239275Sgonzo 394239275Sgonzo buf[i] = (val & 0xff); 395239275Sgonzo } 396239275Sgonzo 397239275Sgonzodone: 398239275Sgonzo if (!locked) 399239275Sgonzo SMSC_UNLOCK(sc); 400239275Sgonzo 401239275Sgonzo return (err); 402239275Sgonzo} 403239275Sgonzo 404239275Sgonzo/** 405239275Sgonzo * smsc_miibus_readreg - Reads a MII/MDIO register 406239275Sgonzo * @dev: usb ether device 407239275Sgonzo * @phy: the number of phy reading from 408239275Sgonzo * @reg: the register address 409239275Sgonzo * 410239275Sgonzo * Attempts to read a phy register over the MII bus. 411239275Sgonzo * 412239275Sgonzo * LOCKING: 413239275Sgonzo * Takes and releases the device mutex lock if not already held. 414239275Sgonzo * 415239275Sgonzo * RETURNS: 416239275Sgonzo * Returns the 16-bits read from the MII register, if this function fails 0 417239275Sgonzo * is returned. 418239275Sgonzo */ 419239275Sgonzostatic int 420239275Sgonzosmsc_miibus_readreg(device_t dev, int phy, int reg) 421239275Sgonzo{ 422239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 423239275Sgonzo int locked; 424239275Sgonzo uint32_t addr; 425239275Sgonzo uint32_t val = 0; 426239275Sgonzo 427239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 428239275Sgonzo if (!locked) 429239275Sgonzo SMSC_LOCK(sc); 430239275Sgonzo 431239275Sgonzo if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 432239275Sgonzo smsc_warn_printf(sc, "MII is busy\n"); 433239275Sgonzo goto done; 434239275Sgonzo } 435239275Sgonzo 436239275Sgonzo addr = (phy << 11) | (reg << 6) | SMSC_MII_READ; 437239275Sgonzo smsc_write_reg(sc, SMSC_MII_ADDR, addr); 438239275Sgonzo 439239275Sgonzo if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 440239275Sgonzo smsc_warn_printf(sc, "MII read timeout\n"); 441239275Sgonzo 442239275Sgonzo smsc_read_reg(sc, SMSC_MII_DATA, &val); 443239275Sgonzo val = le32toh(val); 444239275Sgonzo 445239275Sgonzodone: 446239275Sgonzo if (!locked) 447239275Sgonzo SMSC_UNLOCK(sc); 448239275Sgonzo 449239275Sgonzo return (val & 0xFFFF); 450239275Sgonzo} 451239275Sgonzo 452239275Sgonzo/** 453239275Sgonzo * smsc_miibus_writereg - Writes a MII/MDIO register 454239275Sgonzo * @dev: usb ether device 455239275Sgonzo * @phy: the number of phy writing to 456239275Sgonzo * @reg: the register address 457239275Sgonzo * @val: the value to write 458239275Sgonzo * 459239275Sgonzo * Attempts to write a phy register over the MII bus. 460239275Sgonzo * 461239275Sgonzo * LOCKING: 462239275Sgonzo * Takes and releases the device mutex lock if not already held. 463239275Sgonzo * 464239275Sgonzo * RETURNS: 465239275Sgonzo * Always returns 0 regardless of success or failure. 466239275Sgonzo */ 467239275Sgonzostatic int 468239275Sgonzosmsc_miibus_writereg(device_t dev, int phy, int reg, int val) 469239275Sgonzo{ 470239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 471239275Sgonzo int locked; 472239275Sgonzo uint32_t addr; 473239275Sgonzo 474239275Sgonzo if (sc->sc_phyno != phy) 475239275Sgonzo return (0); 476239275Sgonzo 477239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 478239275Sgonzo if (!locked) 479239275Sgonzo SMSC_LOCK(sc); 480239275Sgonzo 481239275Sgonzo if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) { 482239275Sgonzo smsc_warn_printf(sc, "MII is busy\n"); 483239275Sgonzo goto done; 484239275Sgonzo } 485239275Sgonzo 486239275Sgonzo val = htole32(val); 487239275Sgonzo smsc_write_reg(sc, SMSC_MII_DATA, val); 488239275Sgonzo 489239275Sgonzo addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE; 490239275Sgonzo smsc_write_reg(sc, SMSC_MII_ADDR, addr); 491239275Sgonzo 492239275Sgonzo if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) 493239275Sgonzo smsc_warn_printf(sc, "MII write timeout\n"); 494239275Sgonzo 495239275Sgonzodone: 496239275Sgonzo if (!locked) 497239275Sgonzo SMSC_UNLOCK(sc); 498239275Sgonzo return (0); 499239275Sgonzo} 500239275Sgonzo 501239275Sgonzo 502239275Sgonzo 503239275Sgonzo/** 504239275Sgonzo * smsc_miibus_statchg - Called to detect phy status change 505239275Sgonzo * @dev: usb ether device 506239275Sgonzo * 507239275Sgonzo * This function is called periodically by the system to poll for status 508239275Sgonzo * changes of the link. 509239275Sgonzo * 510239275Sgonzo * LOCKING: 511239275Sgonzo * Takes and releases the device mutex lock if not already held. 512239275Sgonzo */ 513239275Sgonzostatic void 514239275Sgonzosmsc_miibus_statchg(device_t dev) 515239275Sgonzo{ 516239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 517239275Sgonzo struct mii_data *mii = uether_getmii(&sc->sc_ue); 518239275Sgonzo struct ifnet *ifp; 519239275Sgonzo int locked; 520239275Sgonzo int err; 521239275Sgonzo uint32_t flow; 522239275Sgonzo uint32_t afc_cfg; 523239275Sgonzo 524239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 525239275Sgonzo if (!locked) 526239275Sgonzo SMSC_LOCK(sc); 527239275Sgonzo 528239275Sgonzo ifp = uether_getifp(&sc->sc_ue); 529239275Sgonzo if (mii == NULL || ifp == NULL || 530239275Sgonzo (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 531239275Sgonzo goto done; 532239275Sgonzo 533239275Sgonzo /* Use the MII status to determine link status */ 534239275Sgonzo sc->sc_flags &= ~SMSC_FLAG_LINK; 535239275Sgonzo if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == 536239275Sgonzo (IFM_ACTIVE | IFM_AVALID)) { 537239275Sgonzo switch (IFM_SUBTYPE(mii->mii_media_active)) { 538239275Sgonzo case IFM_10_T: 539239275Sgonzo case IFM_100_TX: 540239275Sgonzo sc->sc_flags |= SMSC_FLAG_LINK; 541239275Sgonzo break; 542239275Sgonzo case IFM_1000_T: 543239275Sgonzo /* Gigabit ethernet not supported by chipset */ 544239275Sgonzo break; 545239275Sgonzo default: 546239275Sgonzo break; 547239275Sgonzo } 548239275Sgonzo } 549239275Sgonzo 550239275Sgonzo /* Lost link, do nothing. */ 551239275Sgonzo if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 552239275Sgonzo smsc_dbg_printf(sc, "link flag not set\n"); 553239275Sgonzo goto done; 554239275Sgonzo } 555239275Sgonzo 556239275Sgonzo err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg); 557239275Sgonzo if (err) { 558239275Sgonzo smsc_warn_printf(sc, "failed to read initial AFC_CFG, error %d\n", err); 559239275Sgonzo goto done; 560239275Sgonzo } 561239275Sgonzo 562239275Sgonzo /* Enable/disable full duplex operation and TX/RX pause */ 563239275Sgonzo if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { 564239275Sgonzo smsc_dbg_printf(sc, "full duplex operation\n"); 565239275Sgonzo sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN; 566239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX; 567239275Sgonzo 568239275Sgonzo if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) 569239275Sgonzo flow = 0xffff0002; 570239275Sgonzo else 571239275Sgonzo flow = 0; 572239275Sgonzo 573239275Sgonzo if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) 574239275Sgonzo afc_cfg |= 0xf; 575239275Sgonzo else 576239275Sgonzo afc_cfg &= ~0xf; 577239275Sgonzo 578239275Sgonzo } else { 579239275Sgonzo smsc_dbg_printf(sc, "half duplex operation\n"); 580239275Sgonzo sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX; 581239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN; 582239275Sgonzo 583239275Sgonzo flow = 0; 584239275Sgonzo afc_cfg |= 0xf; 585239275Sgonzo } 586239275Sgonzo 587239275Sgonzo err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 588239275Sgonzo err += smsc_write_reg(sc, SMSC_FLOW, flow); 589239275Sgonzo err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg); 590239275Sgonzo if (err) 591239275Sgonzo smsc_warn_printf(sc, "media change failed, error %d\n", err); 592239275Sgonzo 593239275Sgonzodone: 594239275Sgonzo if (!locked) 595239275Sgonzo SMSC_UNLOCK(sc); 596239275Sgonzo} 597239275Sgonzo 598239275Sgonzo/** 599239275Sgonzo * smsc_ifmedia_upd - Set media options 600239275Sgonzo * @ifp: interface pointer 601239275Sgonzo * 602239275Sgonzo * Basically boilerplate code that simply calls the mii functions to set the 603239275Sgonzo * media options. 604239275Sgonzo * 605239275Sgonzo * LOCKING: 606239275Sgonzo * The device lock must be held before this function is called. 607239275Sgonzo * 608239275Sgonzo * RETURNS: 609239275Sgonzo * Returns 0 on success or a negative error code. 610239275Sgonzo */ 611239275Sgonzostatic int 612239275Sgonzosmsc_ifmedia_upd(struct ifnet *ifp) 613239275Sgonzo{ 614239275Sgonzo struct smsc_softc *sc = ifp->if_softc; 615239275Sgonzo struct mii_data *mii = uether_getmii(&sc->sc_ue); 616251734Skevlo struct mii_softc *miisc; 617239275Sgonzo int err; 618239275Sgonzo 619239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 620239275Sgonzo 621251734Skevlo LIST_FOREACH(miisc, &mii->mii_phys, mii_list) 622251734Skevlo PHY_RESET(miisc); 623239275Sgonzo err = mii_mediachg(mii); 624239275Sgonzo return (err); 625239275Sgonzo} 626239275Sgonzo 627239275Sgonzo/** 628239275Sgonzo * smsc_ifmedia_sts - Report current media status 629239275Sgonzo * @ifp: inet interface pointer 630239275Sgonzo * @ifmr: interface media request 631239275Sgonzo * 632239275Sgonzo * Basically boilerplate code that simply calls the mii functions to get the 633239275Sgonzo * media status. 634239275Sgonzo * 635239275Sgonzo * LOCKING: 636239275Sgonzo * Internally takes and releases the device lock. 637239275Sgonzo */ 638239275Sgonzostatic void 639239275Sgonzosmsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) 640239275Sgonzo{ 641239275Sgonzo struct smsc_softc *sc = ifp->if_softc; 642239275Sgonzo struct mii_data *mii = uether_getmii(&sc->sc_ue); 643239275Sgonzo 644239275Sgonzo SMSC_LOCK(sc); 645239275Sgonzo mii_pollstat(mii); 646239275Sgonzo ifmr->ifm_active = mii->mii_media_active; 647239275Sgonzo ifmr->ifm_status = mii->mii_media_status; 648251734Skevlo SMSC_UNLOCK(sc); 649239275Sgonzo} 650239275Sgonzo 651239275Sgonzo/** 652239275Sgonzo * smsc_hash - Calculate the hash of a mac address 653239275Sgonzo * @addr: The mac address to calculate the hash on 654239275Sgonzo * 655239275Sgonzo * This function is used when configuring a range of m'cast mac addresses to 656239275Sgonzo * filter on. The hash of the mac address is put in the device's mac hash 657239275Sgonzo * table. 658239275Sgonzo * 659239275Sgonzo * RETURNS: 660239275Sgonzo * Returns a value from 0-63 value which is the hash of the mac address. 661239275Sgonzo */ 662239275Sgonzostatic inline uint32_t 663239275Sgonzosmsc_hash(uint8_t addr[ETHER_ADDR_LEN]) 664239275Sgonzo{ 665239275Sgonzo return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f; 666239275Sgonzo} 667239275Sgonzo 668239275Sgonzo/** 669239275Sgonzo * smsc_setmulti - Setup multicast 670239275Sgonzo * @ue: usb ethernet device context 671239275Sgonzo * 672239275Sgonzo * Tells the device to either accept frames with a multicast mac address, a 673239275Sgonzo * select group of m'cast mac addresses or just the devices mac address. 674239275Sgonzo * 675239275Sgonzo * LOCKING: 676239275Sgonzo * Should be called with the SMSC lock held. 677239275Sgonzo */ 678239275Sgonzostatic void 679239275Sgonzosmsc_setmulti(struct usb_ether *ue) 680239275Sgonzo{ 681239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 682239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 683239275Sgonzo struct ifmultiaddr *ifma; 684239275Sgonzo uint32_t hashtbl[2] = { 0, 0 }; 685239275Sgonzo uint32_t hash; 686239275Sgonzo 687239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 688239275Sgonzo 689239275Sgonzo if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) { 690239275Sgonzo smsc_dbg_printf(sc, "receive all multicast enabled\n"); 691239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS; 692239275Sgonzo sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT; 693239275Sgonzo 694239275Sgonzo } else { 695239275Sgonzo /* Take the lock of the mac address list before hashing each of them */ 696239275Sgonzo if_maddr_rlock(ifp); 697239275Sgonzo 698239275Sgonzo if (!TAILQ_EMPTY(&ifp->if_multiaddrs)) { 699239275Sgonzo /* We are filtering on a set of address so calculate hashes of each 700239275Sgonzo * of the address and set the corresponding bits in the register. 701239275Sgonzo */ 702239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT; 703239275Sgonzo sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS); 704239275Sgonzo 705239275Sgonzo TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 706239275Sgonzo if (ifma->ifma_addr->sa_family != AF_LINK) 707239275Sgonzo continue; 708239275Sgonzo 709239275Sgonzo hash = smsc_hash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 710239275Sgonzo hashtbl[hash >> 5] |= 1 << (hash & 0x1F); 711239275Sgonzo } 712239275Sgonzo } else { 713239275Sgonzo /* Only receive packets with destination set to our mac address */ 714239275Sgonzo sc->sc_mac_csr &= ~(SMSC_MAC_CSR_MCPAS | SMSC_MAC_CSR_HPFILT); 715239275Sgonzo } 716239275Sgonzo 717239275Sgonzo if_maddr_runlock(ifp); 718239275Sgonzo 719239275Sgonzo /* Debug */ 720239275Sgonzo if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT) 721239275Sgonzo smsc_dbg_printf(sc, "receive select group of macs\n"); 722239275Sgonzo else 723239275Sgonzo smsc_dbg_printf(sc, "receive own packets only\n"); 724239275Sgonzo } 725239275Sgonzo 726239275Sgonzo /* Write the hash table and mac control registers */ 727239275Sgonzo smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]); 728239275Sgonzo smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]); 729239275Sgonzo smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 730239275Sgonzo} 731239275Sgonzo 732239275Sgonzo 733239275Sgonzo/** 734239275Sgonzo * smsc_setpromisc - Enables/disables promiscuous mode 735239275Sgonzo * @ue: usb ethernet device context 736239275Sgonzo * 737239275Sgonzo * LOCKING: 738239275Sgonzo * Should be called with the SMSC lock held. 739239275Sgonzo */ 740239275Sgonzostatic void 741239275Sgonzosmsc_setpromisc(struct usb_ether *ue) 742239275Sgonzo{ 743239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 744239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 745239275Sgonzo 746239275Sgonzo smsc_dbg_printf(sc, "promiscuous mode %sabled\n", 747239275Sgonzo (ifp->if_flags & IFF_PROMISC) ? "en" : "dis"); 748239275Sgonzo 749239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 750239275Sgonzo 751239275Sgonzo if (ifp->if_flags & IFF_PROMISC) 752239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS; 753239275Sgonzo else 754239275Sgonzo sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS; 755239275Sgonzo 756239275Sgonzo smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 757239275Sgonzo} 758239275Sgonzo 759239275Sgonzo 760239275Sgonzo/** 761239275Sgonzo * smsc_sethwcsum - Enable or disable H/W UDP and TCP checksumming 762239275Sgonzo * @sc: driver soft context 763239275Sgonzo * 764239275Sgonzo * LOCKING: 765239275Sgonzo * Should be called with the SMSC lock held. 766239275Sgonzo * 767239275Sgonzo * RETURNS: 768239275Sgonzo * Returns 0 on success or a negative error code. 769239275Sgonzo */ 770239275Sgonzostatic int smsc_sethwcsum(struct smsc_softc *sc) 771239275Sgonzo{ 772239275Sgonzo struct ifnet *ifp = uether_getifp(&sc->sc_ue); 773239275Sgonzo uint32_t val; 774239275Sgonzo int err; 775239275Sgonzo 776239275Sgonzo if (!ifp) 777239275Sgonzo return (-EIO); 778239275Sgonzo 779239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 780239275Sgonzo 781239275Sgonzo err = smsc_read_reg(sc, SMSC_COE_CTRL, &val); 782239275Sgonzo if (err != 0) { 783239275Sgonzo smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", err); 784239275Sgonzo return (err); 785239275Sgonzo } 786239275Sgonzo 787239275Sgonzo /* Enable/disable the Rx checksum */ 788239275Sgonzo if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_RXCSUM) 789239275Sgonzo val |= SMSC_COE_CTRL_RX_EN; 790239275Sgonzo else 791239275Sgonzo val &= ~SMSC_COE_CTRL_RX_EN; 792239275Sgonzo 793239275Sgonzo /* Enable/disable the Tx checksum (currently not supported) */ 794239275Sgonzo if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_TXCSUM) 795239275Sgonzo val |= SMSC_COE_CTRL_TX_EN; 796239275Sgonzo else 797239275Sgonzo val &= ~SMSC_COE_CTRL_TX_EN; 798239275Sgonzo 799239275Sgonzo err = smsc_write_reg(sc, SMSC_COE_CTRL, val); 800239275Sgonzo if (err != 0) { 801239275Sgonzo smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", err); 802239275Sgonzo return (err); 803239275Sgonzo } 804239275Sgonzo 805239275Sgonzo return (0); 806239275Sgonzo} 807239275Sgonzo 808239275Sgonzo 809239275Sgonzo/** 810239275Sgonzo * smsc_setmacaddress - Sets the mac address in the device 811239275Sgonzo * @sc: driver soft context 812239275Sgonzo * @addr: pointer to array contain at least 6 bytes of the mac 813239275Sgonzo * 814239275Sgonzo * Writes the MAC address into the device, usually the MAC is programmed with 815239275Sgonzo * values from the EEPROM. 816239275Sgonzo * 817239275Sgonzo * LOCKING: 818239275Sgonzo * Should be called with the SMSC lock held. 819239275Sgonzo * 820239275Sgonzo * RETURNS: 821239275Sgonzo * Returns 0 on success or a negative error code. 822239275Sgonzo */ 823239275Sgonzostatic int 824239275Sgonzosmsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr) 825239275Sgonzo{ 826239275Sgonzo int err; 827239275Sgonzo uint32_t val; 828239275Sgonzo 829239275Sgonzo smsc_dbg_printf(sc, "setting mac address to %02x:%02x:%02x:%02x:%02x:%02x\n", 830239275Sgonzo addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]); 831239275Sgonzo 832239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 833239275Sgonzo 834239275Sgonzo val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0]; 835239275Sgonzo if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0) 836239275Sgonzo goto done; 837239275Sgonzo 838239275Sgonzo val = (addr[5] << 8) | addr[4]; 839239275Sgonzo err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val); 840239275Sgonzo 841239275Sgonzodone: 842239275Sgonzo return (err); 843239275Sgonzo} 844239275Sgonzo 845239275Sgonzo/** 846239275Sgonzo * smsc_reset - Reset the SMSC chip 847239275Sgonzo * @sc: device soft context 848239275Sgonzo * 849239275Sgonzo * LOCKING: 850239275Sgonzo * Should be called with the SMSC lock held. 851239275Sgonzo */ 852239275Sgonzostatic void 853239275Sgonzosmsc_reset(struct smsc_softc *sc) 854239275Sgonzo{ 855239275Sgonzo struct usb_config_descriptor *cd; 856239275Sgonzo usb_error_t err; 857239275Sgonzo 858239275Sgonzo cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev); 859239275Sgonzo 860239275Sgonzo err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx, 861239275Sgonzo cd->bConfigurationValue); 862239275Sgonzo if (err) 863239275Sgonzo smsc_warn_printf(sc, "reset failed (ignored)\n"); 864239275Sgonzo 865239275Sgonzo /* Wait a little while for the chip to get its brains in order. */ 866239275Sgonzo uether_pause(&sc->sc_ue, hz / 100); 867239275Sgonzo 868239275Sgonzo /* Reinitialize controller to achieve full reset. */ 869239275Sgonzo smsc_chip_init(sc); 870239275Sgonzo} 871239275Sgonzo 872239275Sgonzo 873239275Sgonzo/** 874239275Sgonzo * smsc_init - Initialises the LAN95xx chip 875239275Sgonzo * @ue: USB ether interface 876239275Sgonzo * 877239275Sgonzo * Called when the interface is brought up (i.e. ifconfig ue0 up), this 878239275Sgonzo * initialise the interface and the rx/tx pipes. 879239275Sgonzo * 880239275Sgonzo * LOCKING: 881239275Sgonzo * Should be called with the SMSC lock held. 882239275Sgonzo */ 883239275Sgonzostatic void 884239275Sgonzosmsc_init(struct usb_ether *ue) 885239275Sgonzo{ 886239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 887239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 888239275Sgonzo 889239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 890239275Sgonzo 891239275Sgonzo if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) 892239275Sgonzo return; 893239275Sgonzo 894239275Sgonzo /* Cancel pending I/O */ 895239275Sgonzo smsc_stop(ue); 896239275Sgonzo 897239275Sgonzo#if __FreeBSD_version <= 1000000 898239275Sgonzo /* On earlier versions this was the first place we could tell the system 899239275Sgonzo * that we supported h/w csuming, however this is only called after the 900239275Sgonzo * the interface has been brought up - not ideal. 901239275Sgonzo */ 902239275Sgonzo if (!(ifp->if_capabilities & IFCAP_RXCSUM)) { 903239275Sgonzo ifp->if_capabilities |= IFCAP_RXCSUM; 904239275Sgonzo ifp->if_capenable |= IFCAP_RXCSUM; 905239275Sgonzo ifp->if_hwassist = 0; 906239275Sgonzo } 907239275Sgonzo 908239275Sgonzo /* TX checksuming is disabled for now 909239275Sgonzo ifp->if_capabilities |= IFCAP_TXCSUM; 910239275Sgonzo ifp->if_capenable |= IFCAP_TXCSUM; 911239275Sgonzo ifp->if_hwassist = CSUM_TCP | CSUM_UDP; 912239275Sgonzo */ 913239275Sgonzo#endif 914239275Sgonzo 915239275Sgonzo /* Reset the ethernet interface. */ 916239275Sgonzo smsc_reset(sc); 917239275Sgonzo 918239275Sgonzo /* Load the multicast filter. */ 919239275Sgonzo smsc_setmulti(ue); 920239275Sgonzo 921239275Sgonzo /* TCP/UDP checksum offload engines. */ 922239275Sgonzo smsc_sethwcsum(sc); 923239275Sgonzo 924239275Sgonzo usbd_xfer_set_stall(sc->sc_xfer[SMSC_BULK_DT_WR]); 925239275Sgonzo 926239275Sgonzo /* Indicate we are up and running. */ 927239275Sgonzo ifp->if_drv_flags |= IFF_DRV_RUNNING; 928239275Sgonzo 929239275Sgonzo /* Switch to selected media. */ 930239275Sgonzo smsc_ifmedia_upd(ifp); 931239275Sgonzo smsc_start(ue); 932239275Sgonzo} 933239275Sgonzo 934239275Sgonzo/** 935239275Sgonzo * smsc_bulk_read_callback - Read callback used to process the USB URB 936239275Sgonzo * @xfer: the USB transfer 937239275Sgonzo * @error: 938239275Sgonzo * 939239275Sgonzo * Reads the URB data which can contain one or more ethernet frames, the 940239275Sgonzo * frames are copyed into a mbuf and given to the system. 941239275Sgonzo * 942239275Sgonzo * LOCKING: 943239275Sgonzo * No locking required, doesn't access internal driver settings. 944239275Sgonzo */ 945239275Sgonzostatic void 946239275Sgonzosmsc_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 947239275Sgonzo{ 948239275Sgonzo struct smsc_softc *sc = usbd_xfer_softc(xfer); 949239275Sgonzo struct usb_ether *ue = &sc->sc_ue; 950239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 951239275Sgonzo struct mbuf *m; 952239275Sgonzo struct usb_page_cache *pc; 953239275Sgonzo uint32_t rxhdr; 954239275Sgonzo uint16_t pktlen; 955239275Sgonzo int off; 956239275Sgonzo int actlen; 957239275Sgonzo 958239275Sgonzo usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 959239275Sgonzo smsc_dbg_printf(sc, "rx : actlen %d\n", actlen); 960239275Sgonzo 961239275Sgonzo switch (USB_GET_STATE(xfer)) { 962239275Sgonzo case USB_ST_TRANSFERRED: 963239275Sgonzo 964239275Sgonzo /* There is always a zero length frame after bringing the IF up */ 965239275Sgonzo if (actlen < (sizeof(rxhdr) + ETHER_CRC_LEN)) 966239275Sgonzo goto tr_setup; 967239275Sgonzo 968239275Sgonzo /* There maybe multiple packets in the USB frame, each will have a 969239275Sgonzo * header and each needs to have it's own mbuf allocated and populated 970239275Sgonzo * for it. 971239275Sgonzo */ 972239275Sgonzo pc = usbd_xfer_get_frame(xfer, 0); 973239275Sgonzo off = 0; 974239275Sgonzo 975239275Sgonzo while (off < actlen) { 976239275Sgonzo 977239275Sgonzo /* The frame header is always aligned on a 4 byte boundary */ 978239275Sgonzo off = ((off + 0x3) & ~0x3); 979239275Sgonzo 980239275Sgonzo usbd_copy_out(pc, off, &rxhdr, sizeof(rxhdr)); 981239275Sgonzo off += (sizeof(rxhdr) + ETHER_ALIGN); 982239275Sgonzo rxhdr = le32toh(rxhdr); 983239275Sgonzo 984239275Sgonzo pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr); 985239275Sgonzo 986239275Sgonzo smsc_dbg_printf(sc, "rx : rxhdr 0x%08x : pktlen %d : actlen %d : " 987239275Sgonzo "off %d\n", rxhdr, pktlen, actlen, off); 988239275Sgonzo 989239275Sgonzo 990239275Sgonzo if (rxhdr & SMSC_RX_STAT_ERROR) { 991239275Sgonzo smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr); 992271832Sglebius if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 993239275Sgonzo if (rxhdr & SMSC_RX_STAT_COLLISION) 994271832Sglebius if_inc_counter(ifp, IFCOUNTER_COLLISIONS, 1); 995239275Sgonzo } else { 996239275Sgonzo 997239275Sgonzo /* Check if the ethernet frame is too big or too small */ 998239275Sgonzo if ((pktlen < ETHER_HDR_LEN) || (pktlen > (actlen - off))) 999239275Sgonzo goto tr_setup; 1000239275Sgonzo 1001239275Sgonzo /* Create a new mbuf to store the packet in */ 1002239275Sgonzo m = uether_newbuf(); 1003239275Sgonzo if (m == NULL) { 1004239275Sgonzo smsc_warn_printf(sc, "failed to create new mbuf\n"); 1005271832Sglebius if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1); 1006239275Sgonzo goto tr_setup; 1007239275Sgonzo } 1008239275Sgonzo 1009239275Sgonzo usbd_copy_out(pc, off, mtod(m, uint8_t *), pktlen); 1010239275Sgonzo 1011239275Sgonzo /* Check if RX TCP/UDP checksumming is being offloaded */ 1012239275Sgonzo if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) { 1013246196Shselasky 1014246196Shselasky struct ether_header *eh; 1015246196Shselasky 1016246196Shselasky eh = mtod(m, struct ether_header *); 1017239275Sgonzo 1018239275Sgonzo /* Remove the extra 2 bytes of the csum */ 1019239275Sgonzo pktlen -= 2; 1020239275Sgonzo 1021239275Sgonzo /* The checksum appears to be simplistically calculated 1022239275Sgonzo * over the udp/tcp header and data up to the end of the 1023239275Sgonzo * eth frame. Which means if the eth frame is padded 1024239275Sgonzo * the csum calculation is incorrectly performed over 1025239275Sgonzo * the padding bytes as well. Therefore to be safe we 1026239275Sgonzo * ignore the H/W csum on frames less than or equal to 1027239275Sgonzo * 64 bytes. 1028246196Shselasky * 1029246196Shselasky * Ignore H/W csum for non-IPv4 packets. 1030239275Sgonzo */ 1031265371Stuexen if ((be16toh(eh->ether_type) == ETHERTYPE_IP) && 1032265371Stuexen (pktlen > ETHER_MIN_LEN)) { 1033265371Stuexen struct ip *ip; 1034265371Stuexen 1035265371Stuexen ip = (struct ip *)(eh + 1); 1036265371Stuexen if ((ip->ip_v == IPVERSION) && 1037265371Stuexen ((ip->ip_p == IPPROTO_TCP) || 1038265371Stuexen (ip->ip_p == IPPROTO_UDP))) { 1039265371Stuexen /* Indicate the UDP/TCP csum has been calculated */ 1040265371Stuexen m->m_pkthdr.csum_flags |= CSUM_DATA_VALID; 1041265371Stuexen 1042265371Stuexen /* Copy the TCP/UDP checksum from the last 2 bytes 1043265371Stuexen * of the transfer and put in the csum_data field. 1044265371Stuexen */ 1045265371Stuexen usbd_copy_out(pc, (off + pktlen), 1046265371Stuexen &m->m_pkthdr.csum_data, 2); 1047265371Stuexen 1048265371Stuexen /* The data is copied in network order, but the 1049265371Stuexen * csum algorithm in the kernel expects it to be 1050265371Stuexen * in host network order. 1051265371Stuexen */ 1052265371Stuexen m->m_pkthdr.csum_data = ntohs(m->m_pkthdr.csum_data); 1053265371Stuexen 1054265371Stuexen smsc_dbg_printf(sc, "RX checksum offloaded (0x%04x)\n", 1055265371Stuexen m->m_pkthdr.csum_data); 1056265371Stuexen } 1057239275Sgonzo } 1058239275Sgonzo 1059239275Sgonzo /* Need to adjust the offset as well or we'll be off 1060239275Sgonzo * by 2 because the csum is removed from the packet 1061239275Sgonzo * length. 1062239275Sgonzo */ 1063239275Sgonzo off += 2; 1064239275Sgonzo } 1065239275Sgonzo 1066239275Sgonzo /* Finally enqueue the mbuf on the receive queue */ 1067241033Shselasky /* Remove 4 trailing bytes */ 1068241034Shselasky if (pktlen < (4 + ETHER_HDR_LEN)) { 1069241034Shselasky m_freem(m); 1070241034Shselasky goto tr_setup; 1071241034Shselasky } 1072241034Shselasky uether_rxmbuf(ue, m, pktlen - 4); 1073239275Sgonzo } 1074239275Sgonzo 1075239275Sgonzo /* Update the offset to move to the next potential packet */ 1076239275Sgonzo off += pktlen; 1077239275Sgonzo } 1078239275Sgonzo 1079239275Sgonzo /* FALLTHROUGH */ 1080239275Sgonzo 1081239275Sgonzo case USB_ST_SETUP: 1082239275Sgonzotr_setup: 1083239275Sgonzo usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 1084239275Sgonzo usbd_transfer_submit(xfer); 1085239275Sgonzo uether_rxflush(ue); 1086239275Sgonzo return; 1087239275Sgonzo 1088239275Sgonzo default: 1089239275Sgonzo if (error != USB_ERR_CANCELLED) { 1090239275Sgonzo smsc_warn_printf(sc, "bulk read error, %s\n", usbd_errstr(error)); 1091239275Sgonzo usbd_xfer_set_stall(xfer); 1092239275Sgonzo goto tr_setup; 1093239275Sgonzo } 1094239275Sgonzo return; 1095239275Sgonzo } 1096239275Sgonzo} 1097239275Sgonzo 1098239275Sgonzo/** 1099239275Sgonzo * smsc_bulk_write_callback - Write callback used to send ethernet frame(s) 1100239275Sgonzo * @xfer: the USB transfer 1101239275Sgonzo * @error: error code if the transfers is in an errored state 1102239275Sgonzo * 1103239275Sgonzo * The main write function that pulls ethernet frames off the queue and sends 1104239275Sgonzo * them out. 1105239275Sgonzo * 1106239275Sgonzo * LOCKING: 1107239275Sgonzo * 1108239275Sgonzo */ 1109239275Sgonzostatic void 1110239275Sgonzosmsc_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 1111239275Sgonzo{ 1112239275Sgonzo struct smsc_softc *sc = usbd_xfer_softc(xfer); 1113239275Sgonzo struct ifnet *ifp = uether_getifp(&sc->sc_ue); 1114239275Sgonzo struct usb_page_cache *pc; 1115239275Sgonzo struct mbuf *m; 1116239275Sgonzo uint32_t txhdr; 1117239275Sgonzo uint32_t frm_len = 0; 1118239275Sgonzo int nframes; 1119239275Sgonzo 1120239275Sgonzo switch (USB_GET_STATE(xfer)) { 1121239275Sgonzo case USB_ST_TRANSFERRED: 1122239275Sgonzo ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1123239275Sgonzo /* FALLTHROUGH */ 1124239275Sgonzo 1125239275Sgonzo case USB_ST_SETUP: 1126239275Sgonzotr_setup: 1127239275Sgonzo if ((sc->sc_flags & SMSC_FLAG_LINK) == 0 || 1128239275Sgonzo (ifp->if_drv_flags & IFF_DRV_OACTIVE) != 0) { 1129239275Sgonzo /* Don't send anything if there is no link or controller is busy. */ 1130239275Sgonzo return; 1131239275Sgonzo } 1132239275Sgonzo 1133239275Sgonzo for (nframes = 0; nframes < 16 && 1134239275Sgonzo !IFQ_DRV_IS_EMPTY(&ifp->if_snd); nframes++) { 1135239275Sgonzo IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1136239275Sgonzo if (m == NULL) 1137239275Sgonzo break; 1138239275Sgonzo usbd_xfer_set_frame_offset(xfer, nframes * MCLBYTES, 1139239275Sgonzo nframes); 1140239275Sgonzo frm_len = 0; 1141239275Sgonzo pc = usbd_xfer_get_frame(xfer, nframes); 1142239275Sgonzo 1143239275Sgonzo /* Each frame is prefixed with two 32-bit values describing the 1144239275Sgonzo * length of the packet and buffer. 1145239275Sgonzo */ 1146239275Sgonzo txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) | 1147239275Sgonzo SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG; 1148239275Sgonzo txhdr = htole32(txhdr); 1149239275Sgonzo usbd_copy_in(pc, 0, &txhdr, sizeof(txhdr)); 1150239275Sgonzo 1151239275Sgonzo txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len); 1152239275Sgonzo txhdr = htole32(txhdr); 1153239275Sgonzo usbd_copy_in(pc, 4, &txhdr, sizeof(txhdr)); 1154239275Sgonzo 1155239275Sgonzo frm_len += 8; 1156239275Sgonzo 1157239275Sgonzo /* Next copy in the actual packet */ 1158239275Sgonzo usbd_m_copy_in(pc, frm_len, m, 0, m->m_pkthdr.len); 1159239275Sgonzo frm_len += m->m_pkthdr.len; 1160239275Sgonzo 1161271832Sglebius if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1162239275Sgonzo 1163239275Sgonzo /* If there's a BPF listener, bounce a copy of this frame to him */ 1164239275Sgonzo BPF_MTAP(ifp, m); 1165239275Sgonzo 1166239275Sgonzo m_freem(m); 1167239275Sgonzo 1168239275Sgonzo /* Set frame length. */ 1169239275Sgonzo usbd_xfer_set_frame_len(xfer, nframes, frm_len); 1170239275Sgonzo } 1171239275Sgonzo if (nframes != 0) { 1172239275Sgonzo usbd_xfer_set_frames(xfer, nframes); 1173239275Sgonzo usbd_transfer_submit(xfer); 1174239275Sgonzo ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1175239275Sgonzo } 1176239275Sgonzo return; 1177239275Sgonzo 1178239275Sgonzo default: 1179271832Sglebius if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1180239275Sgonzo ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1181239275Sgonzo 1182239275Sgonzo if (error != USB_ERR_CANCELLED) { 1183239275Sgonzo smsc_err_printf(sc, "usb error on tx: %s\n", usbd_errstr(error)); 1184239275Sgonzo usbd_xfer_set_stall(xfer); 1185239275Sgonzo goto tr_setup; 1186239275Sgonzo } 1187239275Sgonzo return; 1188239275Sgonzo } 1189239275Sgonzo} 1190239275Sgonzo 1191239275Sgonzo/** 1192239275Sgonzo * smsc_tick - Called periodically to monitor the state of the LAN95xx chip 1193239275Sgonzo * @ue: USB ether interface 1194239275Sgonzo * 1195239275Sgonzo * Simply calls the mii status functions to check the state of the link. 1196239275Sgonzo * 1197239275Sgonzo * LOCKING: 1198239275Sgonzo * Should be called with the SMSC lock held. 1199239275Sgonzo */ 1200239275Sgonzostatic void 1201239275Sgonzosmsc_tick(struct usb_ether *ue) 1202239275Sgonzo{ 1203239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 1204241844Seadler struct mii_data *mii = uether_getmii(&sc->sc_ue); 1205239275Sgonzo 1206239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 1207239275Sgonzo 1208239275Sgonzo mii_tick(mii); 1209239275Sgonzo if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) { 1210239275Sgonzo smsc_miibus_statchg(ue->ue_dev); 1211239275Sgonzo if ((sc->sc_flags & SMSC_FLAG_LINK) != 0) 1212239275Sgonzo smsc_start(ue); 1213239275Sgonzo } 1214239275Sgonzo} 1215239275Sgonzo 1216239275Sgonzo/** 1217239275Sgonzo * smsc_start - Starts communication with the LAN95xx chip 1218239275Sgonzo * @ue: USB ether interface 1219239275Sgonzo * 1220239275Sgonzo * 1221239275Sgonzo * 1222239275Sgonzo */ 1223239275Sgonzostatic void 1224239275Sgonzosmsc_start(struct usb_ether *ue) 1225239275Sgonzo{ 1226239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 1227239275Sgonzo 1228239275Sgonzo /* 1229239275Sgonzo * start the USB transfers, if not already started: 1230239275Sgonzo */ 1231239275Sgonzo usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_RD]); 1232239275Sgonzo usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_WR]); 1233239275Sgonzo} 1234239275Sgonzo 1235239275Sgonzo/** 1236239275Sgonzo * smsc_stop - Stops communication with the LAN95xx chip 1237239275Sgonzo * @ue: USB ether interface 1238239275Sgonzo * 1239239275Sgonzo * 1240239275Sgonzo * 1241239275Sgonzo */ 1242239275Sgonzostatic void 1243239275Sgonzosmsc_stop(struct usb_ether *ue) 1244239275Sgonzo{ 1245239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 1246239275Sgonzo struct ifnet *ifp = uether_getifp(ue); 1247239275Sgonzo 1248239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 1249239275Sgonzo 1250239275Sgonzo ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 1251239275Sgonzo sc->sc_flags &= ~SMSC_FLAG_LINK; 1252239275Sgonzo 1253239275Sgonzo /* 1254239275Sgonzo * stop all the transfers, if not already stopped: 1255239275Sgonzo */ 1256239275Sgonzo usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_WR]); 1257239275Sgonzo usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_RD]); 1258239275Sgonzo} 1259239275Sgonzo 1260239275Sgonzo/** 1261239275Sgonzo * smsc_phy_init - Initialises the in-built SMSC phy 1262239275Sgonzo * @sc: driver soft context 1263239275Sgonzo * 1264239275Sgonzo * Resets the PHY part of the chip and then initialises it to default 1265239275Sgonzo * values. The 'link down' and 'auto-negotiation complete' interrupts 1266239275Sgonzo * from the PHY are also enabled, however we don't monitor the interrupt 1267239275Sgonzo * endpoints for the moment. 1268239275Sgonzo * 1269239275Sgonzo * RETURNS: 1270239275Sgonzo * Returns 0 on success or EIO if failed to reset the PHY. 1271239275Sgonzo */ 1272239275Sgonzostatic int 1273239275Sgonzosmsc_phy_init(struct smsc_softc *sc) 1274239275Sgonzo{ 1275239275Sgonzo int bmcr; 1276239275Sgonzo usb_ticks_t start_ticks; 1277240806Shselasky const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000); 1278239275Sgonzo 1279239275Sgonzo SMSC_LOCK_ASSERT(sc, MA_OWNED); 1280239275Sgonzo 1281239275Sgonzo /* Reset phy and wait for reset to complete */ 1282239275Sgonzo smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, BMCR_RESET); 1283239275Sgonzo 1284239275Sgonzo start_ticks = ticks; 1285239275Sgonzo do { 1286239275Sgonzo uether_pause(&sc->sc_ue, hz / 100); 1287239275Sgonzo bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR); 1288239275Sgonzo } while ((bmcr & MII_BMCR) && ((ticks - start_ticks) < max_ticks)); 1289239275Sgonzo 1290240806Shselasky if (((usb_ticks_t)(ticks - start_ticks)) >= max_ticks) { 1291239275Sgonzo smsc_err_printf(sc, "PHY reset timed-out"); 1292239275Sgonzo return (EIO); 1293239275Sgonzo } 1294239275Sgonzo 1295239275Sgonzo smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_ANAR, 1296239275Sgonzo ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD | /* all modes */ 1297239275Sgonzo ANAR_CSMA | 1298239275Sgonzo ANAR_FC | 1299239275Sgonzo ANAR_PAUSE_ASYM); 1300239275Sgonzo 1301239275Sgonzo /* Setup the phy to interrupt when the link goes down or autoneg completes */ 1302239275Sgonzo smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_STAT); 1303239275Sgonzo smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_MASK, 1304239275Sgonzo (SMSC_PHY_INTR_ANEG_COMP | SMSC_PHY_INTR_LINK_DOWN)); 1305239275Sgonzo 1306239275Sgonzo /* Restart auto-negotation */ 1307239275Sgonzo bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR); 1308239275Sgonzo bmcr |= BMCR_STARTNEG; 1309239275Sgonzo smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, bmcr); 1310239275Sgonzo 1311239275Sgonzo return (0); 1312239275Sgonzo} 1313239275Sgonzo 1314239275Sgonzo 1315239275Sgonzo/** 1316239275Sgonzo * smsc_chip_init - Initialises the chip after power on 1317239275Sgonzo * @sc: driver soft context 1318239275Sgonzo * 1319239275Sgonzo * This initialisation sequence is modelled on the procedure in the Linux 1320239275Sgonzo * driver. 1321239275Sgonzo * 1322239275Sgonzo * RETURNS: 1323239275Sgonzo * Returns 0 on success or an error code on failure. 1324239275Sgonzo */ 1325239275Sgonzostatic int 1326239275Sgonzosmsc_chip_init(struct smsc_softc *sc) 1327239275Sgonzo{ 1328239275Sgonzo int err; 1329239275Sgonzo int locked; 1330239275Sgonzo uint32_t reg_val; 1331239275Sgonzo int burst_cap; 1332239275Sgonzo 1333239275Sgonzo locked = mtx_owned(&sc->sc_mtx); 1334239275Sgonzo if (!locked) 1335239275Sgonzo SMSC_LOCK(sc); 1336239275Sgonzo 1337239275Sgonzo /* Enter H/W config mode */ 1338239275Sgonzo smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST); 1339239275Sgonzo 1340239275Sgonzo if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST)) != 0) { 1341239275Sgonzo smsc_warn_printf(sc, "timed-out waiting for reset to complete\n"); 1342239275Sgonzo goto init_failed; 1343239275Sgonzo } 1344239275Sgonzo 1345239275Sgonzo /* Reset the PHY */ 1346239275Sgonzo smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST); 1347239275Sgonzo 1348239275Sgonzo if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST) != 0)) { 1349239275Sgonzo smsc_warn_printf(sc, "timed-out waiting for phy reset to complete\n"); 1350239275Sgonzo goto init_failed; 1351239275Sgonzo } 1352239275Sgonzo 1353239275Sgonzo /* Set the mac address */ 1354239275Sgonzo if ((err = smsc_setmacaddress(sc, sc->sc_ue.ue_eaddr)) != 0) { 1355239275Sgonzo smsc_warn_printf(sc, "failed to set the MAC address\n"); 1356239275Sgonzo goto init_failed; 1357239275Sgonzo } 1358239275Sgonzo 1359239275Sgonzo /* Don't know what the HW_CFG_BIR bit is, but following the reset sequence 1360239275Sgonzo * as used in the Linux driver. 1361239275Sgonzo */ 1362239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) { 1363239275Sgonzo smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err); 1364239275Sgonzo goto init_failed; 1365239275Sgonzo } 1366239275Sgonzo reg_val |= SMSC_HW_CFG_BIR; 1367239275Sgonzo smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 1368239275Sgonzo 1369239275Sgonzo /* There is a so called 'turbo mode' that the linux driver supports, it 1370239275Sgonzo * seems to allow you to jam multiple frames per Rx transaction. By default 1371239275Sgonzo * this driver supports that and therefore allows multiple frames per URB. 1372239275Sgonzo * 1373239275Sgonzo * The xfer buffer size needs to reflect this as well, therefore based on 1374239275Sgonzo * the calculations in the Linux driver the RX bufsize is set to 18944, 1375239275Sgonzo * bufsz = (16 * 1024 + 5 * 512) 1376239275Sgonzo * 1377239275Sgonzo * Burst capability is the number of URBs that can be in a burst of data/ 1378239275Sgonzo * ethernet frames. 1379239275Sgonzo */ 1380239275Sgonzo if (usbd_get_speed(sc->sc_ue.ue_udev) == USB_SPEED_HIGH) 1381239275Sgonzo burst_cap = 37; 1382239275Sgonzo else 1383239275Sgonzo burst_cap = 128; 1384239275Sgonzo 1385239275Sgonzo smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap); 1386239275Sgonzo 1387239275Sgonzo /* Set the default bulk in delay (magic value from Linux driver) */ 1388239275Sgonzo smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000); 1389239275Sgonzo 1390239275Sgonzo 1391239275Sgonzo 1392239275Sgonzo /* 1393239275Sgonzo * Initialise the RX interface 1394239275Sgonzo */ 1395239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) { 1396239275Sgonzo smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", err); 1397239275Sgonzo goto init_failed; 1398239275Sgonzo } 1399239275Sgonzo 1400239275Sgonzo /* Adjust the packet offset in the buffer (designed to try and align IP 1401239275Sgonzo * header on 4 byte boundary) 1402239275Sgonzo */ 1403239275Sgonzo reg_val &= ~SMSC_HW_CFG_RXDOFF; 1404239275Sgonzo reg_val |= (ETHER_ALIGN << 9) & SMSC_HW_CFG_RXDOFF; 1405239275Sgonzo 1406239275Sgonzo /* The following setings are used for 'turbo mode', a.k.a multiple frames 1407239275Sgonzo * per Rx transaction (again info taken form Linux driver). 1408239275Sgonzo */ 1409239275Sgonzo reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE); 1410239275Sgonzo 1411239275Sgonzo smsc_write_reg(sc, SMSC_HW_CFG, reg_val); 1412239275Sgonzo 1413239275Sgonzo /* Clear the status register ? */ 1414239275Sgonzo smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff); 1415239275Sgonzo 1416239275Sgonzo /* Read and display the revision register */ 1417239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) { 1418239275Sgonzo smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err); 1419239275Sgonzo goto init_failed; 1420239275Sgonzo } 1421239275Sgonzo 1422239275Sgonzo device_printf(sc->sc_ue.ue_dev, "chip 0x%04lx, rev. %04lx\n", 1423239275Sgonzo (sc->sc_rev_id & SMSC_ID_REV_CHIP_ID_MASK) >> 16, 1424239275Sgonzo (sc->sc_rev_id & SMSC_ID_REV_CHIP_REV_MASK)); 1425239275Sgonzo 1426239275Sgonzo /* GPIO/LED setup */ 1427239275Sgonzo reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED | 1428239275Sgonzo SMSC_LED_GPIO_CFG_FDX_LED; 1429239275Sgonzo smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val); 1430239275Sgonzo 1431239275Sgonzo /* 1432239275Sgonzo * Initialise the TX interface 1433239275Sgonzo */ 1434239275Sgonzo smsc_write_reg(sc, SMSC_FLOW, 0); 1435239275Sgonzo 1436239275Sgonzo smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT); 1437239275Sgonzo 1438239275Sgonzo /* Read the current MAC configuration */ 1439239275Sgonzo if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) { 1440239275Sgonzo smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err); 1441239275Sgonzo goto init_failed; 1442239275Sgonzo } 1443239275Sgonzo 1444239275Sgonzo /* Vlan */ 1445239275Sgonzo smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN); 1446239275Sgonzo 1447239275Sgonzo /* 1448239275Sgonzo * Initialise the PHY 1449239275Sgonzo */ 1450239275Sgonzo if ((err = smsc_phy_init(sc)) != 0) 1451239275Sgonzo goto init_failed; 1452239275Sgonzo 1453239275Sgonzo 1454239275Sgonzo /* 1455239275Sgonzo * Start TX 1456239275Sgonzo */ 1457239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN; 1458239275Sgonzo smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 1459239275Sgonzo smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON); 1460239275Sgonzo 1461239275Sgonzo /* 1462239275Sgonzo * Start RX 1463239275Sgonzo */ 1464239275Sgonzo sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN; 1465239275Sgonzo smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr); 1466239275Sgonzo 1467239275Sgonzo if (!locked) 1468239275Sgonzo SMSC_UNLOCK(sc); 1469239275Sgonzo 1470239275Sgonzo return (0); 1471239275Sgonzo 1472239275Sgonzoinit_failed: 1473239275Sgonzo if (!locked) 1474239275Sgonzo SMSC_UNLOCK(sc); 1475239275Sgonzo 1476239275Sgonzo smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err); 1477239275Sgonzo return (err); 1478239275Sgonzo} 1479239275Sgonzo 1480239275Sgonzo 1481239275Sgonzo/** 1482239275Sgonzo * smsc_ioctl - ioctl function for the device 1483239275Sgonzo * @ifp: interface pointer 1484239275Sgonzo * @cmd: the ioctl command 1485239275Sgonzo * @data: data passed in the ioctl call, typically a pointer to struct ifreq. 1486239275Sgonzo * 1487239275Sgonzo * The ioctl routine is overridden to detect change requests for the H/W 1488239275Sgonzo * checksum capabilities. 1489239275Sgonzo * 1490239275Sgonzo * RETURNS: 1491239275Sgonzo * 0 on success and an error code on failure. 1492239275Sgonzo */ 1493239275Sgonzostatic int 1494239275Sgonzosmsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1495239275Sgonzo{ 1496239275Sgonzo struct usb_ether *ue = ifp->if_softc; 1497239275Sgonzo struct smsc_softc *sc; 1498239275Sgonzo struct ifreq *ifr; 1499239275Sgonzo int rc; 1500239275Sgonzo int mask; 1501239275Sgonzo int reinit; 1502239275Sgonzo 1503239275Sgonzo if (cmd == SIOCSIFCAP) { 1504239275Sgonzo 1505239275Sgonzo sc = uether_getsc(ue); 1506239275Sgonzo ifr = (struct ifreq *)data; 1507239275Sgonzo 1508239275Sgonzo SMSC_LOCK(sc); 1509239275Sgonzo 1510239275Sgonzo rc = 0; 1511239275Sgonzo reinit = 0; 1512239275Sgonzo 1513239275Sgonzo mask = ifr->ifr_reqcap ^ ifp->if_capenable; 1514239275Sgonzo 1515239275Sgonzo /* Modify the RX CSUM enable bits */ 1516239275Sgonzo if ((mask & IFCAP_RXCSUM) != 0 && 1517239275Sgonzo (ifp->if_capabilities & IFCAP_RXCSUM) != 0) { 1518239275Sgonzo ifp->if_capenable ^= IFCAP_RXCSUM; 1519239275Sgonzo 1520239275Sgonzo if (ifp->if_drv_flags & IFF_DRV_RUNNING) { 1521239275Sgonzo ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1522239275Sgonzo reinit = 1; 1523239275Sgonzo } 1524239275Sgonzo } 1525239275Sgonzo 1526239275Sgonzo SMSC_UNLOCK(sc); 1527239275Sgonzo if (reinit) 1528239275Sgonzo#if __FreeBSD_version > 1000000 1529239275Sgonzo uether_init(ue); 1530239275Sgonzo#else 1531239275Sgonzo ifp->if_init(ue); 1532239275Sgonzo#endif 1533239275Sgonzo 1534239275Sgonzo } else { 1535239275Sgonzo rc = uether_ioctl(ifp, cmd, data); 1536239275Sgonzo } 1537239275Sgonzo 1538239275Sgonzo return (rc); 1539239275Sgonzo} 1540239275Sgonzo 1541243421Sgonzo#ifdef FDT 1542243421Sgonzo/** 1543243421Sgonzo * Get MAC address from FDT blob. Firmware or loader should fill 1544243421Sgonzo * mac-address or local-mac-address property Returns 0 if MAC address 1545243421Sgonzo * obtained, error code otherwise 1546243421Sgonzo */ 1547243421Sgonzostatic int 1548243421Sgonzosmsc_fdt_find_mac(unsigned char *mac) 1549243421Sgonzo{ 1550243421Sgonzo phandle_t child, parent, root; 1551243421Sgonzo int len; 1552239275Sgonzo 1553243421Sgonzo root = OF_finddevice("/"); 1554243421Sgonzo len = 0; 1555243421Sgonzo parent = root; 1556243421Sgonzo 1557243421Sgonzo /* Traverse through entire tree to find nodes usb ethernet nodes */ 1558243421Sgonzo for (child = OF_child(parent); child != 0; child = OF_peer(child)) { 1559243421Sgonzo 1560243421Sgonzo /* Find a 'leaf'. Start the search from this node. */ 1561243421Sgonzo while (OF_child(child)) { 1562243421Sgonzo parent = child; 1563243421Sgonzo child = OF_child(child); 1564243421Sgonzo } 1565243421Sgonzo 1566243421Sgonzo if (fdt_is_compatible(child, "net,ethernet") && 1567243421Sgonzo fdt_is_compatible(child, "usb,device")) { 1568243421Sgonzo 1569243421Sgonzo /* Check if there is property */ 1570243421Sgonzo if ((len = OF_getproplen(child, "local-mac-address")) > 0) { 1571243421Sgonzo if (len != ETHER_ADDR_LEN) 1572243421Sgonzo return (EINVAL); 1573243421Sgonzo 1574243421Sgonzo OF_getprop(child, "local-mac-address", mac, 1575243421Sgonzo ETHER_ADDR_LEN); 1576243421Sgonzo return (0); 1577243421Sgonzo } 1578243421Sgonzo 1579243421Sgonzo if ((len = OF_getproplen(child, "mac-address")) > 0) { 1580243421Sgonzo if (len != ETHER_ADDR_LEN) 1581243421Sgonzo return (EINVAL); 1582243421Sgonzo 1583243421Sgonzo OF_getprop(child, "mac-address", mac, 1584243421Sgonzo ETHER_ADDR_LEN); 1585243421Sgonzo return (0); 1586243421Sgonzo } 1587243421Sgonzo } 1588243421Sgonzo 1589243421Sgonzo if (OF_peer(child) == 0) { 1590243421Sgonzo /* No more siblings. */ 1591243421Sgonzo child = parent; 1592243421Sgonzo parent = OF_parent(child); 1593243421Sgonzo } 1594243421Sgonzo } 1595243421Sgonzo 1596243421Sgonzo return (ENXIO); 1597243421Sgonzo} 1598243421Sgonzo#endif 1599243421Sgonzo 1600239275Sgonzo/** 1601239275Sgonzo * smsc_attach_post - Called after the driver attached to the USB interface 1602239275Sgonzo * @ue: the USB ethernet device 1603239275Sgonzo * 1604239275Sgonzo * This is where the chip is intialised for the first time. This is different 1605239275Sgonzo * from the smsc_init() function in that that one is designed to setup the 1606239275Sgonzo * H/W to match the UE settings and can be called after a reset. 1607239275Sgonzo * 1608239275Sgonzo * 1609239275Sgonzo */ 1610239275Sgonzostatic void 1611239275Sgonzosmsc_attach_post(struct usb_ether *ue) 1612239275Sgonzo{ 1613239275Sgonzo struct smsc_softc *sc = uether_getsc(ue); 1614239275Sgonzo uint32_t mac_h, mac_l; 1615239275Sgonzo int err; 1616239275Sgonzo 1617239275Sgonzo smsc_dbg_printf(sc, "smsc_attach_post\n"); 1618239275Sgonzo 1619239275Sgonzo /* Setup some of the basics */ 1620239275Sgonzo sc->sc_phyno = 1; 1621239275Sgonzo 1622239275Sgonzo 1623239275Sgonzo /* Attempt to get the mac address, if an EEPROM is not attached this 1624239275Sgonzo * will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC 1625239275Sgonzo * address based on urandom. 1626239275Sgonzo */ 1627239275Sgonzo memset(sc->sc_ue.ue_eaddr, 0xff, ETHER_ADDR_LEN); 1628239275Sgonzo 1629239275Sgonzo /* Check if there is already a MAC address in the register */ 1630239275Sgonzo if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) && 1631239275Sgonzo (smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) { 1632239275Sgonzo sc->sc_ue.ue_eaddr[5] = (uint8_t)((mac_h >> 8) & 0xff); 1633239275Sgonzo sc->sc_ue.ue_eaddr[4] = (uint8_t)((mac_h) & 0xff); 1634239275Sgonzo sc->sc_ue.ue_eaddr[3] = (uint8_t)((mac_l >> 24) & 0xff); 1635239275Sgonzo sc->sc_ue.ue_eaddr[2] = (uint8_t)((mac_l >> 16) & 0xff); 1636239275Sgonzo sc->sc_ue.ue_eaddr[1] = (uint8_t)((mac_l >> 8) & 0xff); 1637239275Sgonzo sc->sc_ue.ue_eaddr[0] = (uint8_t)((mac_l) & 0xff); 1638239275Sgonzo } 1639239275Sgonzo 1640239275Sgonzo /* MAC address is not set so try to read from EEPROM, if that fails generate 1641239275Sgonzo * a random MAC address. 1642239275Sgonzo */ 1643239275Sgonzo if (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)) { 1644239275Sgonzo 1645239275Sgonzo err = smsc_eeprom_read(sc, 0x01, sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN); 1646243421Sgonzo#ifdef FDT 1647243421Sgonzo if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) 1648243421Sgonzo err = smsc_fdt_find_mac(sc->sc_ue.ue_eaddr); 1649243421Sgonzo#endif 1650239275Sgonzo if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) { 1651239275Sgonzo read_random(sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN); 1652239275Sgonzo sc->sc_ue.ue_eaddr[0] &= ~0x01; /* unicast */ 1653239275Sgonzo sc->sc_ue.ue_eaddr[0] |= 0x02; /* locally administered */ 1654239275Sgonzo } 1655239275Sgonzo } 1656239275Sgonzo 1657239275Sgonzo /* Initialise the chip for the first time */ 1658239275Sgonzo smsc_chip_init(sc); 1659239275Sgonzo} 1660239275Sgonzo 1661239275Sgonzo 1662239275Sgonzo/** 1663239275Sgonzo * smsc_attach_post_sub - Called after the driver attached to the USB interface 1664239275Sgonzo * @ue: the USB ethernet device 1665239275Sgonzo * 1666239275Sgonzo * Most of this is boilerplate code and copied from the base USB ethernet 1667239275Sgonzo * driver. It has been overriden so that we can indicate to the system that 1668239275Sgonzo * the chip supports H/W checksumming. 1669239275Sgonzo * 1670239275Sgonzo * RETURNS: 1671239275Sgonzo * Returns 0 on success or a negative error code. 1672239275Sgonzo */ 1673239275Sgonzo#if __FreeBSD_version > 1000000 1674239275Sgonzostatic int 1675239275Sgonzosmsc_attach_post_sub(struct usb_ether *ue) 1676239275Sgonzo{ 1677239275Sgonzo struct smsc_softc *sc; 1678239275Sgonzo struct ifnet *ifp; 1679239275Sgonzo int error; 1680239275Sgonzo 1681239275Sgonzo sc = uether_getsc(ue); 1682239275Sgonzo ifp = ue->ue_ifp; 1683239275Sgonzo ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 1684239275Sgonzo ifp->if_start = uether_start; 1685239275Sgonzo ifp->if_ioctl = smsc_ioctl; 1686239275Sgonzo ifp->if_init = uether_init; 1687239275Sgonzo IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 1688239275Sgonzo ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 1689239275Sgonzo IFQ_SET_READY(&ifp->if_snd); 1690239275Sgonzo 1691239275Sgonzo /* The chip supports TCP/UDP checksum offloading on TX and RX paths, however 1692239275Sgonzo * currently only RX checksum is supported in the driver (see top of file). 1693239275Sgonzo */ 1694239275Sgonzo ifp->if_capabilities |= IFCAP_RXCSUM; 1695239275Sgonzo ifp->if_hwassist = 0; 1696239275Sgonzo 1697239275Sgonzo /* TX checksuming is disabled (for now?) 1698239275Sgonzo ifp->if_capabilities |= IFCAP_TXCSUM; 1699239275Sgonzo ifp->if_capenable |= IFCAP_TXCSUM; 1700239275Sgonzo ifp->if_hwassist = CSUM_TCP | CSUM_UDP; 1701239275Sgonzo */ 1702239275Sgonzo 1703239275Sgonzo ifp->if_capenable = ifp->if_capabilities; 1704239275Sgonzo 1705239275Sgonzo mtx_lock(&Giant); 1706239275Sgonzo error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp, 1707239275Sgonzo uether_ifmedia_upd, ue->ue_methods->ue_mii_sts, 1708239275Sgonzo BMSR_DEFCAPMASK, sc->sc_phyno, MII_OFFSET_ANY, 0); 1709239275Sgonzo mtx_unlock(&Giant); 1710239275Sgonzo 1711239275Sgonzo return (error); 1712239275Sgonzo} 1713239275Sgonzo#endif /* __FreeBSD_version > 1000000 */ 1714239275Sgonzo 1715239275Sgonzo 1716239275Sgonzo/** 1717239275Sgonzo * smsc_probe - Probe the interface. 1718239275Sgonzo * @dev: smsc device handle 1719239275Sgonzo * 1720239275Sgonzo * Checks if the device is a match for this driver. 1721239275Sgonzo * 1722239275Sgonzo * RETURNS: 1723239275Sgonzo * Returns 0 on success or an error code on failure. 1724239275Sgonzo */ 1725239275Sgonzostatic int 1726239275Sgonzosmsc_probe(device_t dev) 1727239275Sgonzo{ 1728239275Sgonzo struct usb_attach_arg *uaa = device_get_ivars(dev); 1729239275Sgonzo 1730239275Sgonzo if (uaa->usb_mode != USB_MODE_HOST) 1731239275Sgonzo return (ENXIO); 1732239275Sgonzo if (uaa->info.bConfigIndex != SMSC_CONFIG_INDEX) 1733239275Sgonzo return (ENXIO); 1734239275Sgonzo if (uaa->info.bIfaceIndex != SMSC_IFACE_IDX) 1735239275Sgonzo return (ENXIO); 1736239275Sgonzo 1737239275Sgonzo return (usbd_lookup_id_by_uaa(smsc_devs, sizeof(smsc_devs), uaa)); 1738239275Sgonzo} 1739239275Sgonzo 1740239275Sgonzo 1741239275Sgonzo/** 1742239275Sgonzo * smsc_attach - Attach the interface. 1743239275Sgonzo * @dev: smsc device handle 1744239275Sgonzo * 1745239275Sgonzo * Allocate softc structures, do ifmedia setup and ethernet/BPF attach. 1746239275Sgonzo * 1747239275Sgonzo * RETURNS: 1748239275Sgonzo * Returns 0 on success or a negative error code. 1749239275Sgonzo */ 1750239275Sgonzostatic int 1751239275Sgonzosmsc_attach(device_t dev) 1752239275Sgonzo{ 1753239275Sgonzo struct usb_attach_arg *uaa = device_get_ivars(dev); 1754239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 1755239275Sgonzo struct usb_ether *ue = &sc->sc_ue; 1756239275Sgonzo uint8_t iface_index; 1757239275Sgonzo int err; 1758239275Sgonzo 1759239275Sgonzo sc->sc_flags = USB_GET_DRIVER_INFO(uaa); 1760239275Sgonzo 1761239275Sgonzo device_set_usb_desc(dev); 1762239275Sgonzo 1763239275Sgonzo mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 1764239275Sgonzo 1765239275Sgonzo /* Setup the endpoints for the SMSC LAN95xx device(s) */ 1766239275Sgonzo iface_index = SMSC_IFACE_IDX; 1767239275Sgonzo err = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer, 1768239275Sgonzo smsc_config, SMSC_N_TRANSFER, sc, &sc->sc_mtx); 1769239275Sgonzo if (err) { 1770239275Sgonzo device_printf(dev, "error: allocating USB transfers failed\n"); 1771239275Sgonzo goto detach; 1772239275Sgonzo } 1773239275Sgonzo 1774239275Sgonzo ue->ue_sc = sc; 1775239275Sgonzo ue->ue_dev = dev; 1776239275Sgonzo ue->ue_udev = uaa->device; 1777239275Sgonzo ue->ue_mtx = &sc->sc_mtx; 1778239275Sgonzo ue->ue_methods = &smsc_ue_methods; 1779239275Sgonzo 1780239275Sgonzo err = uether_ifattach(ue); 1781239275Sgonzo if (err) { 1782239275Sgonzo device_printf(dev, "error: could not attach interface\n"); 1783239275Sgonzo goto detach; 1784239275Sgonzo } 1785239275Sgonzo return (0); /* success */ 1786239275Sgonzo 1787239275Sgonzodetach: 1788239275Sgonzo smsc_detach(dev); 1789239275Sgonzo return (ENXIO); /* failure */ 1790239275Sgonzo} 1791239275Sgonzo 1792239275Sgonzo/** 1793239275Sgonzo * smsc_detach - Detach the interface. 1794239275Sgonzo * @dev: smsc device handle 1795239275Sgonzo * 1796239275Sgonzo * RETURNS: 1797239275Sgonzo * Returns 0. 1798239275Sgonzo */ 1799239275Sgonzostatic int 1800239275Sgonzosmsc_detach(device_t dev) 1801239275Sgonzo{ 1802239275Sgonzo struct smsc_softc *sc = device_get_softc(dev); 1803239275Sgonzo struct usb_ether *ue = &sc->sc_ue; 1804239275Sgonzo 1805239275Sgonzo usbd_transfer_unsetup(sc->sc_xfer, SMSC_N_TRANSFER); 1806239275Sgonzo uether_ifdetach(ue); 1807239275Sgonzo mtx_destroy(&sc->sc_mtx); 1808239275Sgonzo 1809239275Sgonzo return (0); 1810239275Sgonzo} 1811239275Sgonzo 1812239275Sgonzostatic device_method_t smsc_methods[] = { 1813239275Sgonzo /* Device interface */ 1814239275Sgonzo DEVMETHOD(device_probe, smsc_probe), 1815239275Sgonzo DEVMETHOD(device_attach, smsc_attach), 1816239275Sgonzo DEVMETHOD(device_detach, smsc_detach), 1817239275Sgonzo 1818239275Sgonzo /* bus interface */ 1819239275Sgonzo DEVMETHOD(bus_print_child, bus_generic_print_child), 1820239275Sgonzo DEVMETHOD(bus_driver_added, bus_generic_driver_added), 1821239275Sgonzo 1822239275Sgonzo /* MII interface */ 1823239275Sgonzo DEVMETHOD(miibus_readreg, smsc_miibus_readreg), 1824239275Sgonzo DEVMETHOD(miibus_writereg, smsc_miibus_writereg), 1825239275Sgonzo DEVMETHOD(miibus_statchg, smsc_miibus_statchg), 1826239275Sgonzo 1827246128Ssbz DEVMETHOD_END 1828239275Sgonzo}; 1829239275Sgonzo 1830239275Sgonzostatic driver_t smsc_driver = { 1831239275Sgonzo .name = "smsc", 1832239275Sgonzo .methods = smsc_methods, 1833239275Sgonzo .size = sizeof(struct smsc_softc), 1834239275Sgonzo}; 1835239275Sgonzo 1836239275Sgonzostatic devclass_t smsc_devclass; 1837239275Sgonzo 1838239275SgonzoDRIVER_MODULE(smsc, uhub, smsc_driver, smsc_devclass, NULL, 0); 1839239275SgonzoDRIVER_MODULE(miibus, smsc, miibus_driver, miibus_devclass, 0, 0); 1840239275SgonzoMODULE_DEPEND(smsc, uether, 1, 1, 1); 1841239275SgonzoMODULE_DEPEND(smsc, usb, 1, 1, 1); 1842239275SgonzoMODULE_DEPEND(smsc, ether, 1, 1, 1); 1843239275SgonzoMODULE_DEPEND(smsc, miibus, 1, 1, 1); 1844239275SgonzoMODULE_VERSION(smsc, 1); 1845