2012-08-15 04:03:55 +00:00
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/*-
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* Copyright (c) 2012
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* Ben Gray <bgray@freebsd.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* SMSC LAN9xxx devices (http://www.smsc.com/)
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*
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* The LAN9500 & LAN9500A devices are stand-alone USB to Ethernet chips that
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* support USB 2.0 and 10/100 Mbps Ethernet.
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*
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* The LAN951x devices are an integrated USB hub and USB to Ethernet adapter.
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* The driver only covers the Ethernet part, the standard USB hub driver
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* supports the hub part.
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*
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* This driver is closely modelled on the Linux driver written and copyrighted
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* by SMSC.
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*
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*
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*
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*
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* H/W TCP & UDP Checksum Offloading
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* ---------------------------------
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* The chip supports both tx and rx offloading of UDP & TCP checksums, this
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* feature can be dynamically enabled/disabled.
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*
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* RX checksuming is performed across bytes after the IPv4 header to the end of
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* the Ethernet frame, this means if the frame is padded with non-zero values
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* the H/W checksum will be incorrect, however the rx code compensates for this.
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*
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* TX checksuming is more complicated, the device requires a special header to
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* be prefixed onto the start of the frame which indicates the start and end
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* positions of the UDP or TCP frame. This requires the driver to manually
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* go through the packet data and decode the headers prior to sending.
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* On Linux they generally provide cues to the location of the csum and the
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* area to calculate it over, on FreeBSD we seem to have to do it all ourselves,
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* hence this is not as optimal and therefore h/w tX checksum is currently not
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* implemented.
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*
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*/
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#include <sys/stdint.h>
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#include <sys/stddef.h>
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/sysctl.h>
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#include <sys/sx.h>
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#include <sys/unistd.h>
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/priv.h>
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#include <sys/random.h>
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2012-11-23 03:34:12 +00:00
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#include "opt_platform.h"
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#ifdef FDT
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#endif
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2012-08-15 04:03:55 +00:00
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include "usbdevs.h"
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#define USB_DEBUG_VAR smsc_debug
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#include <dev/usb/usb_debug.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/net/usb_ethernet.h>
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2013-02-10 10:55:20 +00:00
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#include <dev/usb/net/if_smscreg.h>
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2012-08-15 04:03:55 +00:00
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#ifdef USB_DEBUG
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static int smsc_debug = 0;
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SYSCTL_NODE(_hw_usb, OID_AUTO, smsc, CTLFLAG_RW, 0, "USB smsc");
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SYSCTL_INT(_hw_usb_smsc, OID_AUTO, debug, CTLFLAG_RW, &smsc_debug, 0,
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"Debug level");
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#endif
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/*
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* Various supported device vendors/products.
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*/
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static const struct usb_device_id smsc_devs[] = {
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#define SMSC_DEV(p,i) { USB_VPI(USB_VENDOR_SMC2, USB_PRODUCT_SMC2_##p, i) }
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SMSC_DEV(LAN9514_ETH, 0),
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#undef SMSC_DEV
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};
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#ifdef USB_DEBUG
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#define smsc_dbg_printf(sc, fmt, args...) \
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do { \
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if (smsc_debug > 0) \
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device_printf((sc)->sc_ue.ue_dev, "debug: " fmt, ##args); \
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} while(0)
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#else
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#define smsc_dbg_printf(sc, fmt, args...)
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#endif
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#define smsc_warn_printf(sc, fmt, args...) \
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device_printf((sc)->sc_ue.ue_dev, "warning: " fmt, ##args)
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#define smsc_err_printf(sc, fmt, args...) \
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device_printf((sc)->sc_ue.ue_dev, "error: " fmt, ##args)
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#define ETHER_IS_ZERO(addr) \
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(!(addr[0] | addr[1] | addr[2] | addr[3] | addr[4] | addr[5]))
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#define ETHER_IS_VALID(addr) \
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(!ETHER_IS_MULTICAST(addr) && !ETHER_IS_ZERO(addr))
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static device_probe_t smsc_probe;
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static device_attach_t smsc_attach;
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static device_detach_t smsc_detach;
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static usb_callback_t smsc_bulk_read_callback;
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static usb_callback_t smsc_bulk_write_callback;
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static miibus_readreg_t smsc_miibus_readreg;
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static miibus_writereg_t smsc_miibus_writereg;
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static miibus_statchg_t smsc_miibus_statchg;
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#if __FreeBSD_version > 1000000
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static int smsc_attach_post_sub(struct usb_ether *ue);
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#endif
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static uether_fn_t smsc_attach_post;
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static uether_fn_t smsc_init;
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static uether_fn_t smsc_stop;
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static uether_fn_t smsc_start;
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static uether_fn_t smsc_tick;
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static uether_fn_t smsc_setmulti;
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static uether_fn_t smsc_setpromisc;
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static int smsc_ifmedia_upd(struct ifnet *);
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static void smsc_ifmedia_sts(struct ifnet *, struct ifmediareq *);
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static int smsc_chip_init(struct smsc_softc *sc);
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static int smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data);
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static const struct usb_config smsc_config[SMSC_N_TRANSFER] = {
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[SMSC_BULK_DT_WR] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_OUT,
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.frames = 16,
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.bufsize = 16 * (MCLBYTES + 16),
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.flags = {.pipe_bof = 1,.force_short_xfer = 1,},
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.callback = smsc_bulk_write_callback,
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.timeout = 10000, /* 10 seconds */
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},
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[SMSC_BULK_DT_RD] = {
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.type = UE_BULK,
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.endpoint = UE_ADDR_ANY,
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.direction = UE_DIR_IN,
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.bufsize = 20480, /* bytes */
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.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
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.callback = smsc_bulk_read_callback,
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.timeout = 0, /* no timeout */
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},
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/* The SMSC chip supports an interrupt endpoints, however they aren't
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* needed as we poll on the MII status.
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*/
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};
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static const struct usb_ether_methods smsc_ue_methods = {
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.ue_attach_post = smsc_attach_post,
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#if __FreeBSD_version > 1000000
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.ue_attach_post_sub = smsc_attach_post_sub,
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#endif
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.ue_start = smsc_start,
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.ue_ioctl = smsc_ioctl,
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.ue_init = smsc_init,
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.ue_stop = smsc_stop,
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.ue_tick = smsc_tick,
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.ue_setmulti = smsc_setmulti,
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.ue_setpromisc = smsc_setpromisc,
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.ue_mii_upd = smsc_ifmedia_upd,
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.ue_mii_sts = smsc_ifmedia_sts,
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};
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/**
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* smsc_read_reg - Reads a 32-bit register on the device
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* @sc: driver soft context
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* @off: offset of the register
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* @data: pointer a value that will be populated with the register value
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*
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* LOCKING:
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* The device lock must be held before calling this function.
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*
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* RETURNS:
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* 0 on success, a USB_ERR_?? error code on failure.
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*/
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static int
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smsc_read_reg(struct smsc_softc *sc, uint32_t off, uint32_t *data)
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{
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struct usb_device_request req;
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uint32_t buf;
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usb_error_t err;
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SMSC_LOCK_ASSERT(sc, MA_OWNED);
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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req.bRequest = SMSC_UR_READ_REG;
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USETW(req.wValue, 0);
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USETW(req.wIndex, off);
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USETW(req.wLength, 4);
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err = uether_do_request(&sc->sc_ue, &req, &buf, 1000);
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if (err != 0)
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smsc_warn_printf(sc, "Failed to read register 0x%0x\n", off);
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*data = le32toh(buf);
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return (err);
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}
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/**
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* smsc_write_reg - Writes a 32-bit register on the device
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* @sc: driver soft context
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* @off: offset of the register
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* @data: the 32-bit value to write into the register
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*
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* LOCKING:
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* The device lock must be held before calling this function.
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*
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* RETURNS:
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* 0 on success, a USB_ERR_?? error code on failure.
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*/
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static int
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smsc_write_reg(struct smsc_softc *sc, uint32_t off, uint32_t data)
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{
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struct usb_device_request req;
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uint32_t buf;
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usb_error_t err;
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SMSC_LOCK_ASSERT(sc, MA_OWNED);
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buf = htole32(data);
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req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
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req.bRequest = SMSC_UR_WRITE_REG;
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USETW(req.wValue, 0);
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USETW(req.wIndex, off);
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USETW(req.wLength, 4);
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err = uether_do_request(&sc->sc_ue, &req, &buf, 1000);
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if (err != 0)
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smsc_warn_printf(sc, "Failed to write register 0x%0x\n", off);
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return (err);
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}
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/**
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* smsc_wait_for_bits - Polls on a register value until bits are cleared
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* @sc: soft context
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* @reg: offset of the register
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* @bits: if the bits are clear the function returns
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*
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* LOCKING:
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* The device lock must be held before calling this function.
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*
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* RETURNS:
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* 0 on success, or a USB_ERR_?? error code on failure.
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*/
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static int
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smsc_wait_for_bits(struct smsc_softc *sc, uint32_t reg, uint32_t bits)
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{
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usb_ticks_t start_ticks;
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2012-09-22 07:27:24 +00:00
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const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
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2012-08-15 04:03:55 +00:00
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uint32_t val;
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int err;
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SMSC_LOCK_ASSERT(sc, MA_OWNED);
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start_ticks = (usb_ticks_t)ticks;
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do {
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if ((err = smsc_read_reg(sc, reg, &val)) != 0)
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return (err);
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if (!(val & bits))
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return (0);
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uether_pause(&sc->sc_ue, hz / 100);
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2012-09-22 07:27:24 +00:00
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} while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks);
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2012-08-15 04:03:55 +00:00
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return (USB_ERR_TIMEOUT);
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}
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/**
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* smsc_eeprom_read - Reads the attached EEPROM
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* @sc: soft context
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* @off: the eeprom address offset
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* @buf: stores the bytes
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* @buflen: the number of bytes to read
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*
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* Simply reads bytes from an attached eeprom.
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*
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* LOCKING:
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* The function takes and releases the device lock if it is not already held.
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*
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* RETURNS:
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* 0 on success, or a USB_ERR_?? error code on failure.
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*/
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static int
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smsc_eeprom_read(struct smsc_softc *sc, uint16_t off, uint8_t *buf, uint16_t buflen)
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{
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usb_ticks_t start_ticks;
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2012-09-22 08:02:42 +00:00
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const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
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2012-08-15 04:03:55 +00:00
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int err;
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int locked;
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uint32_t val;
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uint16_t i;
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|
|
|
|
|
locked = mtx_owned(&sc->sc_mtx);
|
|
|
|
if (!locked)
|
|
|
|
SMSC_LOCK(sc);
|
|
|
|
|
|
|
|
err = smsc_wait_for_bits(sc, SMSC_EEPROM_CMD, SMSC_EEPROM_CMD_BUSY);
|
|
|
|
if (err != 0) {
|
|
|
|
smsc_warn_printf(sc, "eeprom busy, failed to read data\n");
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* start reading the bytes, one at a time */
|
|
|
|
for (i = 0; i < buflen; i++) {
|
|
|
|
|
|
|
|
val = SMSC_EEPROM_CMD_BUSY | (SMSC_EEPROM_CMD_ADDR_MASK & (off + i));
|
|
|
|
if ((err = smsc_write_reg(sc, SMSC_EEPROM_CMD, val)) != 0)
|
|
|
|
goto done;
|
|
|
|
|
|
|
|
start_ticks = (usb_ticks_t)ticks;
|
|
|
|
do {
|
|
|
|
if ((err = smsc_read_reg(sc, SMSC_EEPROM_CMD, &val)) != 0)
|
|
|
|
goto done;
|
|
|
|
if (!(val & SMSC_EEPROM_CMD_BUSY) || (val & SMSC_EEPROM_CMD_TIMEOUT))
|
|
|
|
break;
|
|
|
|
|
|
|
|
uether_pause(&sc->sc_ue, hz / 100);
|
2012-09-22 08:02:42 +00:00
|
|
|
} while (((usb_ticks_t)(ticks - start_ticks)) < max_ticks);
|
|
|
|
|
2012-08-15 04:03:55 +00:00
|
|
|
if (val & (SMSC_EEPROM_CMD_BUSY | SMSC_EEPROM_CMD_TIMEOUT)) {
|
|
|
|
smsc_warn_printf(sc, "eeprom command failed\n");
|
|
|
|
err = USB_ERR_IOERROR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((err = smsc_read_reg(sc, SMSC_EEPROM_DATA, &val)) != 0)
|
|
|
|
goto done;
|
|
|
|
|
|
|
|
buf[i] = (val & 0xff);
|
|
|
|
}
|
|
|
|
|
|
|
|
done:
|
|
|
|
if (!locked)
|
|
|
|
SMSC_UNLOCK(sc);
|
|
|
|
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_miibus_readreg - Reads a MII/MDIO register
|
|
|
|
* @dev: usb ether device
|
|
|
|
* @phy: the number of phy reading from
|
|
|
|
* @reg: the register address
|
|
|
|
*
|
|
|
|
* Attempts to read a phy register over the MII bus.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Takes and releases the device mutex lock if not already held.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns the 16-bits read from the MII register, if this function fails 0
|
|
|
|
* is returned.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_miibus_readreg(device_t dev, int phy, int reg)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = device_get_softc(dev);
|
|
|
|
int locked;
|
|
|
|
uint32_t addr;
|
|
|
|
uint32_t val = 0;
|
|
|
|
|
|
|
|
locked = mtx_owned(&sc->sc_mtx);
|
|
|
|
if (!locked)
|
|
|
|
SMSC_LOCK(sc);
|
|
|
|
|
|
|
|
if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) {
|
|
|
|
smsc_warn_printf(sc, "MII is busy\n");
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
addr = (phy << 11) | (reg << 6) | SMSC_MII_READ;
|
|
|
|
smsc_write_reg(sc, SMSC_MII_ADDR, addr);
|
|
|
|
|
|
|
|
if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0)
|
|
|
|
smsc_warn_printf(sc, "MII read timeout\n");
|
|
|
|
|
|
|
|
smsc_read_reg(sc, SMSC_MII_DATA, &val);
|
|
|
|
val = le32toh(val);
|
|
|
|
|
|
|
|
done:
|
|
|
|
if (!locked)
|
|
|
|
SMSC_UNLOCK(sc);
|
|
|
|
|
|
|
|
return (val & 0xFFFF);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_miibus_writereg - Writes a MII/MDIO register
|
|
|
|
* @dev: usb ether device
|
|
|
|
* @phy: the number of phy writing to
|
|
|
|
* @reg: the register address
|
|
|
|
* @val: the value to write
|
|
|
|
*
|
|
|
|
* Attempts to write a phy register over the MII bus.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Takes and releases the device mutex lock if not already held.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Always returns 0 regardless of success or failure.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_miibus_writereg(device_t dev, int phy, int reg, int val)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = device_get_softc(dev);
|
|
|
|
int locked;
|
|
|
|
uint32_t addr;
|
|
|
|
|
|
|
|
if (sc->sc_phyno != phy)
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
locked = mtx_owned(&sc->sc_mtx);
|
|
|
|
if (!locked)
|
|
|
|
SMSC_LOCK(sc);
|
|
|
|
|
|
|
|
if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0) {
|
|
|
|
smsc_warn_printf(sc, "MII is busy\n");
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
val = htole32(val);
|
|
|
|
smsc_write_reg(sc, SMSC_MII_DATA, val);
|
|
|
|
|
|
|
|
addr = (phy << 11) | (reg << 6) | SMSC_MII_WRITE;
|
|
|
|
smsc_write_reg(sc, SMSC_MII_ADDR, addr);
|
|
|
|
|
|
|
|
if (smsc_wait_for_bits(sc, SMSC_MII_ADDR, SMSC_MII_BUSY) != 0)
|
|
|
|
smsc_warn_printf(sc, "MII write timeout\n");
|
|
|
|
|
|
|
|
done:
|
|
|
|
if (!locked)
|
|
|
|
SMSC_UNLOCK(sc);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_miibus_statchg - Called to detect phy status change
|
|
|
|
* @dev: usb ether device
|
|
|
|
*
|
|
|
|
* This function is called periodically by the system to poll for status
|
|
|
|
* changes of the link.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Takes and releases the device mutex lock if not already held.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_miibus_statchg(device_t dev)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = device_get_softc(dev);
|
|
|
|
struct mii_data *mii = uether_getmii(&sc->sc_ue);
|
|
|
|
struct ifnet *ifp;
|
|
|
|
int locked;
|
|
|
|
int err;
|
|
|
|
uint32_t flow;
|
|
|
|
uint32_t afc_cfg;
|
|
|
|
|
|
|
|
locked = mtx_owned(&sc->sc_mtx);
|
|
|
|
if (!locked)
|
|
|
|
SMSC_LOCK(sc);
|
|
|
|
|
|
|
|
ifp = uether_getifp(&sc->sc_ue);
|
|
|
|
if (mii == NULL || ifp == NULL ||
|
|
|
|
(ifp->if_drv_flags & IFF_DRV_RUNNING) == 0)
|
|
|
|
goto done;
|
|
|
|
|
|
|
|
/* Use the MII status to determine link status */
|
|
|
|
sc->sc_flags &= ~SMSC_FLAG_LINK;
|
|
|
|
if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
|
|
|
|
(IFM_ACTIVE | IFM_AVALID)) {
|
|
|
|
switch (IFM_SUBTYPE(mii->mii_media_active)) {
|
|
|
|
case IFM_10_T:
|
|
|
|
case IFM_100_TX:
|
|
|
|
sc->sc_flags |= SMSC_FLAG_LINK;
|
|
|
|
break;
|
|
|
|
case IFM_1000_T:
|
|
|
|
/* Gigabit ethernet not supported by chipset */
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Lost link, do nothing. */
|
|
|
|
if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) {
|
|
|
|
smsc_dbg_printf(sc, "link flag not set\n");
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = smsc_read_reg(sc, SMSC_AFC_CFG, &afc_cfg);
|
|
|
|
if (err) {
|
|
|
|
smsc_warn_printf(sc, "failed to read initial AFC_CFG, error %d\n", err);
|
|
|
|
goto done;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Enable/disable full duplex operation and TX/RX pause */
|
|
|
|
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
|
|
|
|
smsc_dbg_printf(sc, "full duplex operation\n");
|
|
|
|
sc->sc_mac_csr &= ~SMSC_MAC_CSR_RCVOWN;
|
|
|
|
sc->sc_mac_csr |= SMSC_MAC_CSR_FDPX;
|
|
|
|
|
|
|
|
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
|
|
|
|
flow = 0xffff0002;
|
|
|
|
else
|
|
|
|
flow = 0;
|
|
|
|
|
|
|
|
if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
|
|
|
|
afc_cfg |= 0xf;
|
|
|
|
else
|
|
|
|
afc_cfg &= ~0xf;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
smsc_dbg_printf(sc, "half duplex operation\n");
|
|
|
|
sc->sc_mac_csr &= ~SMSC_MAC_CSR_FDPX;
|
|
|
|
sc->sc_mac_csr |= SMSC_MAC_CSR_RCVOWN;
|
|
|
|
|
|
|
|
flow = 0;
|
|
|
|
afc_cfg |= 0xf;
|
|
|
|
}
|
|
|
|
|
|
|
|
err = smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
|
|
|
|
err += smsc_write_reg(sc, SMSC_FLOW, flow);
|
|
|
|
err += smsc_write_reg(sc, SMSC_AFC_CFG, afc_cfg);
|
|
|
|
if (err)
|
|
|
|
smsc_warn_printf(sc, "media change failed, error %d\n", err);
|
|
|
|
|
|
|
|
done:
|
|
|
|
if (!locked)
|
|
|
|
SMSC_UNLOCK(sc);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_ifmedia_upd - Set media options
|
|
|
|
* @ifp: interface pointer
|
|
|
|
*
|
|
|
|
* Basically boilerplate code that simply calls the mii functions to set the
|
|
|
|
* media options.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* The device lock must be held before this function is called.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0 on success or a negative error code.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_ifmedia_upd(struct ifnet *ifp)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = ifp->if_softc;
|
|
|
|
struct mii_data *mii = uether_getmii(&sc->sc_ue);
|
|
|
|
int err;
|
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
if (mii->mii_instance) {
|
|
|
|
struct mii_softc *miisc;
|
|
|
|
|
|
|
|
LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
|
|
|
|
mii_phy_reset(miisc);
|
|
|
|
}
|
|
|
|
err = mii_mediachg(mii);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_ifmedia_sts - Report current media status
|
|
|
|
* @ifp: inet interface pointer
|
|
|
|
* @ifmr: interface media request
|
|
|
|
*
|
|
|
|
* Basically boilerplate code that simply calls the mii functions to get the
|
|
|
|
* media status.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Internally takes and releases the device lock.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = ifp->if_softc;
|
|
|
|
struct mii_data *mii = uether_getmii(&sc->sc_ue);
|
|
|
|
|
|
|
|
SMSC_LOCK(sc);
|
|
|
|
|
|
|
|
mii_pollstat(mii);
|
|
|
|
|
|
|
|
SMSC_UNLOCK(sc);
|
|
|
|
|
|
|
|
ifmr->ifm_active = mii->mii_media_active;
|
|
|
|
ifmr->ifm_status = mii->mii_media_status;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_hash - Calculate the hash of a mac address
|
|
|
|
* @addr: The mac address to calculate the hash on
|
|
|
|
*
|
|
|
|
* This function is used when configuring a range of m'cast mac addresses to
|
|
|
|
* filter on. The hash of the mac address is put in the device's mac hash
|
|
|
|
* table.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns a value from 0-63 value which is the hash of the mac address.
|
|
|
|
*/
|
|
|
|
static inline uint32_t
|
|
|
|
smsc_hash(uint8_t addr[ETHER_ADDR_LEN])
|
|
|
|
{
|
|
|
|
return (ether_crc32_be(addr, ETHER_ADDR_LEN) >> 26) & 0x3f;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_setmulti - Setup multicast
|
|
|
|
* @ue: usb ethernet device context
|
|
|
|
*
|
|
|
|
* Tells the device to either accept frames with a multicast mac address, a
|
|
|
|
* select group of m'cast mac addresses or just the devices mac address.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Should be called with the SMSC lock held.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_setmulti(struct usb_ether *ue)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = uether_getsc(ue);
|
|
|
|
struct ifnet *ifp = uether_getifp(ue);
|
|
|
|
struct ifmultiaddr *ifma;
|
|
|
|
uint32_t hashtbl[2] = { 0, 0 };
|
|
|
|
uint32_t hash;
|
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
if (ifp->if_flags & (IFF_ALLMULTI | IFF_PROMISC)) {
|
|
|
|
smsc_dbg_printf(sc, "receive all multicast enabled\n");
|
|
|
|
sc->sc_mac_csr |= SMSC_MAC_CSR_MCPAS;
|
|
|
|
sc->sc_mac_csr &= ~SMSC_MAC_CSR_HPFILT;
|
|
|
|
|
|
|
|
} else {
|
|
|
|
/* Take the lock of the mac address list before hashing each of them */
|
|
|
|
if_maddr_rlock(ifp);
|
|
|
|
|
|
|
|
if (!TAILQ_EMPTY(&ifp->if_multiaddrs)) {
|
|
|
|
/* We are filtering on a set of address so calculate hashes of each
|
|
|
|
* of the address and set the corresponding bits in the register.
|
|
|
|
*/
|
|
|
|
sc->sc_mac_csr |= SMSC_MAC_CSR_HPFILT;
|
|
|
|
sc->sc_mac_csr &= ~(SMSC_MAC_CSR_PRMS | SMSC_MAC_CSR_MCPAS);
|
|
|
|
|
|
|
|
TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
|
|
|
|
if (ifma->ifma_addr->sa_family != AF_LINK)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
hash = smsc_hash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
|
|
|
|
hashtbl[hash >> 5] |= 1 << (hash & 0x1F);
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
/* Only receive packets with destination set to our mac address */
|
|
|
|
sc->sc_mac_csr &= ~(SMSC_MAC_CSR_MCPAS | SMSC_MAC_CSR_HPFILT);
|
|
|
|
}
|
|
|
|
|
|
|
|
if_maddr_runlock(ifp);
|
|
|
|
|
|
|
|
/* Debug */
|
|
|
|
if (sc->sc_mac_csr & SMSC_MAC_CSR_HPFILT)
|
|
|
|
smsc_dbg_printf(sc, "receive select group of macs\n");
|
|
|
|
else
|
|
|
|
smsc_dbg_printf(sc, "receive own packets only\n");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Write the hash table and mac control registers */
|
|
|
|
smsc_write_reg(sc, SMSC_HASHH, hashtbl[1]);
|
|
|
|
smsc_write_reg(sc, SMSC_HASHL, hashtbl[0]);
|
|
|
|
smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_setpromisc - Enables/disables promiscuous mode
|
|
|
|
* @ue: usb ethernet device context
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Should be called with the SMSC lock held.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_setpromisc(struct usb_ether *ue)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = uether_getsc(ue);
|
|
|
|
struct ifnet *ifp = uether_getifp(ue);
|
|
|
|
|
|
|
|
smsc_dbg_printf(sc, "promiscuous mode %sabled\n",
|
|
|
|
(ifp->if_flags & IFF_PROMISC) ? "en" : "dis");
|
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
if (ifp->if_flags & IFF_PROMISC)
|
|
|
|
sc->sc_mac_csr |= SMSC_MAC_CSR_PRMS;
|
|
|
|
else
|
|
|
|
sc->sc_mac_csr &= ~SMSC_MAC_CSR_PRMS;
|
|
|
|
|
|
|
|
smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_sethwcsum - Enable or disable H/W UDP and TCP checksumming
|
|
|
|
* @sc: driver soft context
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Should be called with the SMSC lock held.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0 on success or a negative error code.
|
|
|
|
*/
|
|
|
|
static int smsc_sethwcsum(struct smsc_softc *sc)
|
|
|
|
{
|
|
|
|
struct ifnet *ifp = uether_getifp(&sc->sc_ue);
|
|
|
|
uint32_t val;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
if (!ifp)
|
|
|
|
return (-EIO);
|
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
err = smsc_read_reg(sc, SMSC_COE_CTRL, &val);
|
|
|
|
if (err != 0) {
|
|
|
|
smsc_warn_printf(sc, "failed to read SMSC_COE_CTRL (err=%d)\n", err);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Enable/disable the Rx checksum */
|
|
|
|
if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_RXCSUM)
|
|
|
|
val |= SMSC_COE_CTRL_RX_EN;
|
|
|
|
else
|
|
|
|
val &= ~SMSC_COE_CTRL_RX_EN;
|
|
|
|
|
|
|
|
/* Enable/disable the Tx checksum (currently not supported) */
|
|
|
|
if ((ifp->if_capabilities & ifp->if_capenable) & IFCAP_TXCSUM)
|
|
|
|
val |= SMSC_COE_CTRL_TX_EN;
|
|
|
|
else
|
|
|
|
val &= ~SMSC_COE_CTRL_TX_EN;
|
|
|
|
|
|
|
|
err = smsc_write_reg(sc, SMSC_COE_CTRL, val);
|
|
|
|
if (err != 0) {
|
|
|
|
smsc_warn_printf(sc, "failed to write SMSC_COE_CTRL (err=%d)\n", err);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_setmacaddress - Sets the mac address in the device
|
|
|
|
* @sc: driver soft context
|
|
|
|
* @addr: pointer to array contain at least 6 bytes of the mac
|
|
|
|
*
|
|
|
|
* Writes the MAC address into the device, usually the MAC is programmed with
|
|
|
|
* values from the EEPROM.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Should be called with the SMSC lock held.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0 on success or a negative error code.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_setmacaddress(struct smsc_softc *sc, const uint8_t *addr)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
uint32_t val;
|
|
|
|
|
|
|
|
smsc_dbg_printf(sc, "setting mac address to %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
|
|
addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
|
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
val = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
|
|
|
|
if ((err = smsc_write_reg(sc, SMSC_MAC_ADDRL, val)) != 0)
|
|
|
|
goto done;
|
|
|
|
|
|
|
|
val = (addr[5] << 8) | addr[4];
|
|
|
|
err = smsc_write_reg(sc, SMSC_MAC_ADDRH, val);
|
|
|
|
|
|
|
|
done:
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_reset - Reset the SMSC chip
|
|
|
|
* @sc: device soft context
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Should be called with the SMSC lock held.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_reset(struct smsc_softc *sc)
|
|
|
|
{
|
|
|
|
struct usb_config_descriptor *cd;
|
|
|
|
usb_error_t err;
|
|
|
|
|
|
|
|
cd = usbd_get_config_descriptor(sc->sc_ue.ue_udev);
|
|
|
|
|
|
|
|
err = usbd_req_set_config(sc->sc_ue.ue_udev, &sc->sc_mtx,
|
|
|
|
cd->bConfigurationValue);
|
|
|
|
if (err)
|
|
|
|
smsc_warn_printf(sc, "reset failed (ignored)\n");
|
|
|
|
|
|
|
|
/* Wait a little while for the chip to get its brains in order. */
|
|
|
|
uether_pause(&sc->sc_ue, hz / 100);
|
|
|
|
|
|
|
|
/* Reinitialize controller to achieve full reset. */
|
|
|
|
smsc_chip_init(sc);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_init - Initialises the LAN95xx chip
|
|
|
|
* @ue: USB ether interface
|
|
|
|
*
|
|
|
|
* Called when the interface is brought up (i.e. ifconfig ue0 up), this
|
|
|
|
* initialise the interface and the rx/tx pipes.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Should be called with the SMSC lock held.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_init(struct usb_ether *ue)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = uether_getsc(ue);
|
|
|
|
struct ifnet *ifp = uether_getifp(ue);
|
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* Cancel pending I/O */
|
|
|
|
smsc_stop(ue);
|
|
|
|
|
|
|
|
#if __FreeBSD_version <= 1000000
|
|
|
|
/* On earlier versions this was the first place we could tell the system
|
|
|
|
* that we supported h/w csuming, however this is only called after the
|
|
|
|
* the interface has been brought up - not ideal.
|
|
|
|
*/
|
|
|
|
if (!(ifp->if_capabilities & IFCAP_RXCSUM)) {
|
|
|
|
ifp->if_capabilities |= IFCAP_RXCSUM;
|
|
|
|
ifp->if_capenable |= IFCAP_RXCSUM;
|
|
|
|
ifp->if_hwassist = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* TX checksuming is disabled for now
|
|
|
|
ifp->if_capabilities |= IFCAP_TXCSUM;
|
|
|
|
ifp->if_capenable |= IFCAP_TXCSUM;
|
|
|
|
ifp->if_hwassist = CSUM_TCP | CSUM_UDP;
|
|
|
|
*/
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Reset the ethernet interface. */
|
|
|
|
smsc_reset(sc);
|
|
|
|
|
|
|
|
/* Load the multicast filter. */
|
|
|
|
smsc_setmulti(ue);
|
|
|
|
|
|
|
|
/* TCP/UDP checksum offload engines. */
|
|
|
|
smsc_sethwcsum(sc);
|
|
|
|
|
|
|
|
usbd_xfer_set_stall(sc->sc_xfer[SMSC_BULK_DT_WR]);
|
|
|
|
|
|
|
|
/* Indicate we are up and running. */
|
|
|
|
ifp->if_drv_flags |= IFF_DRV_RUNNING;
|
|
|
|
|
|
|
|
/* Switch to selected media. */
|
|
|
|
smsc_ifmedia_upd(ifp);
|
|
|
|
smsc_start(ue);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_bulk_read_callback - Read callback used to process the USB URB
|
|
|
|
* @xfer: the USB transfer
|
|
|
|
* @error:
|
|
|
|
*
|
|
|
|
* Reads the URB data which can contain one or more ethernet frames, the
|
|
|
|
* frames are copyed into a mbuf and given to the system.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* No locking required, doesn't access internal driver settings.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = usbd_xfer_softc(xfer);
|
|
|
|
struct usb_ether *ue = &sc->sc_ue;
|
|
|
|
struct ifnet *ifp = uether_getifp(ue);
|
|
|
|
struct mbuf *m;
|
|
|
|
struct usb_page_cache *pc;
|
|
|
|
uint32_t rxhdr;
|
|
|
|
uint16_t pktlen;
|
|
|
|
int off;
|
|
|
|
int actlen;
|
|
|
|
|
|
|
|
usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
|
|
|
|
smsc_dbg_printf(sc, "rx : actlen %d\n", actlen);
|
|
|
|
|
|
|
|
switch (USB_GET_STATE(xfer)) {
|
|
|
|
case USB_ST_TRANSFERRED:
|
|
|
|
|
|
|
|
/* There is always a zero length frame after bringing the IF up */
|
|
|
|
if (actlen < (sizeof(rxhdr) + ETHER_CRC_LEN))
|
|
|
|
goto tr_setup;
|
|
|
|
|
|
|
|
/* There maybe multiple packets in the USB frame, each will have a
|
|
|
|
* header and each needs to have it's own mbuf allocated and populated
|
|
|
|
* for it.
|
|
|
|
*/
|
|
|
|
pc = usbd_xfer_get_frame(xfer, 0);
|
|
|
|
off = 0;
|
|
|
|
|
|
|
|
while (off < actlen) {
|
|
|
|
|
|
|
|
/* The frame header is always aligned on a 4 byte boundary */
|
|
|
|
off = ((off + 0x3) & ~0x3);
|
|
|
|
|
|
|
|
usbd_copy_out(pc, off, &rxhdr, sizeof(rxhdr));
|
|
|
|
off += (sizeof(rxhdr) + ETHER_ALIGN);
|
|
|
|
rxhdr = le32toh(rxhdr);
|
|
|
|
|
|
|
|
pktlen = (uint16_t)SMSC_RX_STAT_FRM_LENGTH(rxhdr);
|
|
|
|
|
|
|
|
smsc_dbg_printf(sc, "rx : rxhdr 0x%08x : pktlen %d : actlen %d : "
|
|
|
|
"off %d\n", rxhdr, pktlen, actlen, off);
|
|
|
|
|
|
|
|
|
|
|
|
if (rxhdr & SMSC_RX_STAT_ERROR) {
|
|
|
|
smsc_dbg_printf(sc, "rx error (hdr 0x%08x)\n", rxhdr);
|
|
|
|
ifp->if_ierrors++;
|
|
|
|
if (rxhdr & SMSC_RX_STAT_COLLISION)
|
|
|
|
ifp->if_collisions++;
|
|
|
|
} else {
|
|
|
|
|
|
|
|
/* Check if the ethernet frame is too big or too small */
|
|
|
|
if ((pktlen < ETHER_HDR_LEN) || (pktlen > (actlen - off)))
|
|
|
|
goto tr_setup;
|
|
|
|
|
|
|
|
/* Create a new mbuf to store the packet in */
|
|
|
|
m = uether_newbuf();
|
|
|
|
if (m == NULL) {
|
|
|
|
smsc_warn_printf(sc, "failed to create new mbuf\n");
|
|
|
|
ifp->if_iqdrops++;
|
|
|
|
goto tr_setup;
|
|
|
|
}
|
|
|
|
|
|
|
|
usbd_copy_out(pc, off, mtod(m, uint8_t *), pktlen);
|
|
|
|
|
|
|
|
/* Check if RX TCP/UDP checksumming is being offloaded */
|
|
|
|
if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) {
|
2013-02-01 07:26:25 +00:00
|
|
|
|
|
|
|
struct ether_header *eh;
|
|
|
|
|
|
|
|
eh = mtod(m, struct ether_header *);
|
2012-08-15 04:03:55 +00:00
|
|
|
|
|
|
|
/* Remove the extra 2 bytes of the csum */
|
|
|
|
pktlen -= 2;
|
|
|
|
|
|
|
|
/* The checksum appears to be simplistically calculated
|
|
|
|
* over the udp/tcp header and data up to the end of the
|
|
|
|
* eth frame. Which means if the eth frame is padded
|
|
|
|
* the csum calculation is incorrectly performed over
|
|
|
|
* the padding bytes as well. Therefore to be safe we
|
|
|
|
* ignore the H/W csum on frames less than or equal to
|
|
|
|
* 64 bytes.
|
2013-02-01 07:26:25 +00:00
|
|
|
*
|
|
|
|
* Ignore H/W csum for non-IPv4 packets.
|
2012-08-15 04:03:55 +00:00
|
|
|
*/
|
2013-02-01 07:26:25 +00:00
|
|
|
if (be16toh(eh->ether_type) == ETHERTYPE_IP && pktlen > ETHER_MIN_LEN) {
|
2012-08-15 04:03:55 +00:00
|
|
|
|
|
|
|
/* Indicate the UDP/TCP csum has been calculated */
|
|
|
|
m->m_pkthdr.csum_flags |= CSUM_DATA_VALID;
|
|
|
|
|
|
|
|
/* Copy the TCP/UDP checksum from the last 2 bytes
|
|
|
|
* of the transfer and put in the csum_data field.
|
|
|
|
*/
|
|
|
|
usbd_copy_out(pc, (off + pktlen),
|
|
|
|
&m->m_pkthdr.csum_data, 2);
|
|
|
|
|
|
|
|
/* The data is copied in network order, but the
|
|
|
|
* csum algorithm in the kernel expects it to be
|
|
|
|
* in host network order.
|
|
|
|
*/
|
|
|
|
m->m_pkthdr.csum_data = ntohs(m->m_pkthdr.csum_data);
|
|
|
|
|
|
|
|
smsc_dbg_printf(sc, "RX checksum offloaded (0x%04x)\n",
|
|
|
|
m->m_pkthdr.csum_data);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Need to adjust the offset as well or we'll be off
|
|
|
|
* by 2 because the csum is removed from the packet
|
|
|
|
* length.
|
|
|
|
*/
|
|
|
|
off += 2;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Finally enqueue the mbuf on the receive queue */
|
2012-09-28 15:33:13 +00:00
|
|
|
/* Remove 4 trailing bytes */
|
2012-09-28 16:23:01 +00:00
|
|
|
if (pktlen < (4 + ETHER_HDR_LEN)) {
|
|
|
|
m_freem(m);
|
|
|
|
goto tr_setup;
|
|
|
|
}
|
|
|
|
uether_rxmbuf(ue, m, pktlen - 4);
|
2012-08-15 04:03:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Update the offset to move to the next potential packet */
|
|
|
|
off += pktlen;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* FALLTHROUGH */
|
|
|
|
|
|
|
|
case USB_ST_SETUP:
|
|
|
|
tr_setup:
|
|
|
|
usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
|
|
|
|
usbd_transfer_submit(xfer);
|
|
|
|
uether_rxflush(ue);
|
|
|
|
return;
|
|
|
|
|
|
|
|
default:
|
|
|
|
if (error != USB_ERR_CANCELLED) {
|
|
|
|
smsc_warn_printf(sc, "bulk read error, %s\n", usbd_errstr(error));
|
|
|
|
usbd_xfer_set_stall(xfer);
|
|
|
|
goto tr_setup;
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_bulk_write_callback - Write callback used to send ethernet frame(s)
|
|
|
|
* @xfer: the USB transfer
|
|
|
|
* @error: error code if the transfers is in an errored state
|
|
|
|
*
|
|
|
|
* The main write function that pulls ethernet frames off the queue and sends
|
|
|
|
* them out.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = usbd_xfer_softc(xfer);
|
|
|
|
struct ifnet *ifp = uether_getifp(&sc->sc_ue);
|
|
|
|
struct usb_page_cache *pc;
|
|
|
|
struct mbuf *m;
|
|
|
|
uint32_t txhdr;
|
|
|
|
uint32_t frm_len = 0;
|
|
|
|
int nframes;
|
|
|
|
|
|
|
|
switch (USB_GET_STATE(xfer)) {
|
|
|
|
case USB_ST_TRANSFERRED:
|
|
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
|
|
/* FALLTHROUGH */
|
|
|
|
|
|
|
|
case USB_ST_SETUP:
|
|
|
|
tr_setup:
|
|
|
|
if ((sc->sc_flags & SMSC_FLAG_LINK) == 0 ||
|
|
|
|
(ifp->if_drv_flags & IFF_DRV_OACTIVE) != 0) {
|
|
|
|
/* Don't send anything if there is no link or controller is busy. */
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
for (nframes = 0; nframes < 16 &&
|
|
|
|
!IFQ_DRV_IS_EMPTY(&ifp->if_snd); nframes++) {
|
|
|
|
IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
|
|
|
|
if (m == NULL)
|
|
|
|
break;
|
|
|
|
usbd_xfer_set_frame_offset(xfer, nframes * MCLBYTES,
|
|
|
|
nframes);
|
|
|
|
frm_len = 0;
|
|
|
|
pc = usbd_xfer_get_frame(xfer, nframes);
|
|
|
|
|
|
|
|
/* Each frame is prefixed with two 32-bit values describing the
|
|
|
|
* length of the packet and buffer.
|
|
|
|
*/
|
|
|
|
txhdr = SMSC_TX_CTRL_0_BUF_SIZE(m->m_pkthdr.len) |
|
|
|
|
SMSC_TX_CTRL_0_FIRST_SEG | SMSC_TX_CTRL_0_LAST_SEG;
|
|
|
|
txhdr = htole32(txhdr);
|
|
|
|
usbd_copy_in(pc, 0, &txhdr, sizeof(txhdr));
|
|
|
|
|
|
|
|
txhdr = SMSC_TX_CTRL_1_PKT_LENGTH(m->m_pkthdr.len);
|
|
|
|
txhdr = htole32(txhdr);
|
|
|
|
usbd_copy_in(pc, 4, &txhdr, sizeof(txhdr));
|
|
|
|
|
|
|
|
frm_len += 8;
|
|
|
|
|
|
|
|
/* Next copy in the actual packet */
|
|
|
|
usbd_m_copy_in(pc, frm_len, m, 0, m->m_pkthdr.len);
|
|
|
|
frm_len += m->m_pkthdr.len;
|
|
|
|
|
|
|
|
ifp->if_opackets++;
|
|
|
|
|
|
|
|
/* If there's a BPF listener, bounce a copy of this frame to him */
|
|
|
|
BPF_MTAP(ifp, m);
|
|
|
|
|
|
|
|
m_freem(m);
|
|
|
|
|
|
|
|
/* Set frame length. */
|
|
|
|
usbd_xfer_set_frame_len(xfer, nframes, frm_len);
|
|
|
|
}
|
|
|
|
if (nframes != 0) {
|
|
|
|
usbd_xfer_set_frames(xfer, nframes);
|
|
|
|
usbd_transfer_submit(xfer);
|
|
|
|
ifp->if_drv_flags |= IFF_DRV_OACTIVE;
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
|
|
|
|
default:
|
|
|
|
ifp->if_oerrors++;
|
|
|
|
ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
|
|
|
|
|
|
|
|
if (error != USB_ERR_CANCELLED) {
|
|
|
|
smsc_err_printf(sc, "usb error on tx: %s\n", usbd_errstr(error));
|
|
|
|
usbd_xfer_set_stall(xfer);
|
|
|
|
goto tr_setup;
|
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_tick - Called periodically to monitor the state of the LAN95xx chip
|
|
|
|
* @ue: USB ether interface
|
|
|
|
*
|
|
|
|
* Simply calls the mii status functions to check the state of the link.
|
|
|
|
*
|
|
|
|
* LOCKING:
|
|
|
|
* Should be called with the SMSC lock held.
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_tick(struct usb_ether *ue)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = uether_getsc(ue);
|
2012-10-22 03:00:37 +00:00
|
|
|
struct mii_data *mii = uether_getmii(&sc->sc_ue);
|
2012-08-15 04:03:55 +00:00
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
mii_tick(mii);
|
|
|
|
if ((sc->sc_flags & SMSC_FLAG_LINK) == 0) {
|
|
|
|
smsc_miibus_statchg(ue->ue_dev);
|
|
|
|
if ((sc->sc_flags & SMSC_FLAG_LINK) != 0)
|
|
|
|
smsc_start(ue);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_start - Starts communication with the LAN95xx chip
|
|
|
|
* @ue: USB ether interface
|
|
|
|
*
|
|
|
|
*
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_start(struct usb_ether *ue)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = uether_getsc(ue);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* start the USB transfers, if not already started:
|
|
|
|
*/
|
|
|
|
usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_RD]);
|
|
|
|
usbd_transfer_start(sc->sc_xfer[SMSC_BULK_DT_WR]);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_stop - Stops communication with the LAN95xx chip
|
|
|
|
* @ue: USB ether interface
|
|
|
|
*
|
|
|
|
*
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_stop(struct usb_ether *ue)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = uether_getsc(ue);
|
|
|
|
struct ifnet *ifp = uether_getifp(ue);
|
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
|
|
|
|
sc->sc_flags &= ~SMSC_FLAG_LINK;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* stop all the transfers, if not already stopped:
|
|
|
|
*/
|
|
|
|
usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_WR]);
|
|
|
|
usbd_transfer_stop(sc->sc_xfer[SMSC_BULK_DT_RD]);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_phy_init - Initialises the in-built SMSC phy
|
|
|
|
* @sc: driver soft context
|
|
|
|
*
|
|
|
|
* Resets the PHY part of the chip and then initialises it to default
|
|
|
|
* values. The 'link down' and 'auto-negotiation complete' interrupts
|
|
|
|
* from the PHY are also enabled, however we don't monitor the interrupt
|
|
|
|
* endpoints for the moment.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0 on success or EIO if failed to reset the PHY.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_phy_init(struct smsc_softc *sc)
|
|
|
|
{
|
|
|
|
int bmcr;
|
|
|
|
usb_ticks_t start_ticks;
|
2012-09-22 08:02:42 +00:00
|
|
|
const usb_ticks_t max_ticks = USB_MS_TO_TICKS(1000);
|
2012-08-15 04:03:55 +00:00
|
|
|
|
|
|
|
SMSC_LOCK_ASSERT(sc, MA_OWNED);
|
|
|
|
|
|
|
|
/* Reset phy and wait for reset to complete */
|
|
|
|
smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, BMCR_RESET);
|
|
|
|
|
|
|
|
start_ticks = ticks;
|
|
|
|
do {
|
|
|
|
uether_pause(&sc->sc_ue, hz / 100);
|
|
|
|
bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR);
|
|
|
|
} while ((bmcr & MII_BMCR) && ((ticks - start_ticks) < max_ticks));
|
|
|
|
|
2012-09-22 08:02:42 +00:00
|
|
|
if (((usb_ticks_t)(ticks - start_ticks)) >= max_ticks) {
|
2012-08-15 04:03:55 +00:00
|
|
|
smsc_err_printf(sc, "PHY reset timed-out");
|
|
|
|
return (EIO);
|
|
|
|
}
|
|
|
|
|
|
|
|
smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_ANAR,
|
|
|
|
ANAR_10 | ANAR_10_FD | ANAR_TX | ANAR_TX_FD | /* all modes */
|
|
|
|
ANAR_CSMA |
|
|
|
|
ANAR_FC |
|
|
|
|
ANAR_PAUSE_ASYM);
|
|
|
|
|
|
|
|
/* Setup the phy to interrupt when the link goes down or autoneg completes */
|
|
|
|
smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_STAT);
|
|
|
|
smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, SMSC_PHY_INTR_MASK,
|
|
|
|
(SMSC_PHY_INTR_ANEG_COMP | SMSC_PHY_INTR_LINK_DOWN));
|
|
|
|
|
|
|
|
/* Restart auto-negotation */
|
|
|
|
bmcr = smsc_miibus_readreg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR);
|
|
|
|
bmcr |= BMCR_STARTNEG;
|
|
|
|
smsc_miibus_writereg(sc->sc_ue.ue_dev, sc->sc_phyno, MII_BMCR, bmcr);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_chip_init - Initialises the chip after power on
|
|
|
|
* @sc: driver soft context
|
|
|
|
*
|
|
|
|
* This initialisation sequence is modelled on the procedure in the Linux
|
|
|
|
* driver.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0 on success or an error code on failure.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_chip_init(struct smsc_softc *sc)
|
|
|
|
{
|
|
|
|
int err;
|
|
|
|
int locked;
|
|
|
|
uint32_t reg_val;
|
|
|
|
int burst_cap;
|
|
|
|
|
|
|
|
locked = mtx_owned(&sc->sc_mtx);
|
|
|
|
if (!locked)
|
|
|
|
SMSC_LOCK(sc);
|
|
|
|
|
|
|
|
/* Enter H/W config mode */
|
|
|
|
smsc_write_reg(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST);
|
|
|
|
|
|
|
|
if ((err = smsc_wait_for_bits(sc, SMSC_HW_CFG, SMSC_HW_CFG_LRST)) != 0) {
|
|
|
|
smsc_warn_printf(sc, "timed-out waiting for reset to complete\n");
|
|
|
|
goto init_failed;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Reset the PHY */
|
|
|
|
smsc_write_reg(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST);
|
|
|
|
|
|
|
|
if ((err = smsc_wait_for_bits(sc, SMSC_PM_CTRL, SMSC_PM_CTRL_PHY_RST) != 0)) {
|
|
|
|
smsc_warn_printf(sc, "timed-out waiting for phy reset to complete\n");
|
|
|
|
goto init_failed;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Set the mac address */
|
|
|
|
if ((err = smsc_setmacaddress(sc, sc->sc_ue.ue_eaddr)) != 0) {
|
|
|
|
smsc_warn_printf(sc, "failed to set the MAC address\n");
|
|
|
|
goto init_failed;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Don't know what the HW_CFG_BIR bit is, but following the reset sequence
|
|
|
|
* as used in the Linux driver.
|
|
|
|
*/
|
|
|
|
if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) != 0) {
|
|
|
|
smsc_warn_printf(sc, "failed to read HW_CFG: %d\n", err);
|
|
|
|
goto init_failed;
|
|
|
|
}
|
|
|
|
reg_val |= SMSC_HW_CFG_BIR;
|
|
|
|
smsc_write_reg(sc, SMSC_HW_CFG, reg_val);
|
|
|
|
|
|
|
|
/* There is a so called 'turbo mode' that the linux driver supports, it
|
|
|
|
* seems to allow you to jam multiple frames per Rx transaction. By default
|
|
|
|
* this driver supports that and therefore allows multiple frames per URB.
|
|
|
|
*
|
|
|
|
* The xfer buffer size needs to reflect this as well, therefore based on
|
|
|
|
* the calculations in the Linux driver the RX bufsize is set to 18944,
|
|
|
|
* bufsz = (16 * 1024 + 5 * 512)
|
|
|
|
*
|
|
|
|
* Burst capability is the number of URBs that can be in a burst of data/
|
|
|
|
* ethernet frames.
|
|
|
|
*/
|
|
|
|
if (usbd_get_speed(sc->sc_ue.ue_udev) == USB_SPEED_HIGH)
|
|
|
|
burst_cap = 37;
|
|
|
|
else
|
|
|
|
burst_cap = 128;
|
|
|
|
|
|
|
|
smsc_write_reg(sc, SMSC_BURST_CAP, burst_cap);
|
|
|
|
|
|
|
|
/* Set the default bulk in delay (magic value from Linux driver) */
|
|
|
|
smsc_write_reg(sc, SMSC_BULK_IN_DLY, 0x00002000);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialise the RX interface
|
|
|
|
*/
|
|
|
|
if ((err = smsc_read_reg(sc, SMSC_HW_CFG, ®_val)) < 0) {
|
|
|
|
smsc_warn_printf(sc, "failed to read HW_CFG: (err = %d)\n", err);
|
|
|
|
goto init_failed;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Adjust the packet offset in the buffer (designed to try and align IP
|
|
|
|
* header on 4 byte boundary)
|
|
|
|
*/
|
|
|
|
reg_val &= ~SMSC_HW_CFG_RXDOFF;
|
|
|
|
reg_val |= (ETHER_ALIGN << 9) & SMSC_HW_CFG_RXDOFF;
|
|
|
|
|
|
|
|
/* The following setings are used for 'turbo mode', a.k.a multiple frames
|
|
|
|
* per Rx transaction (again info taken form Linux driver).
|
|
|
|
*/
|
|
|
|
reg_val |= (SMSC_HW_CFG_MEF | SMSC_HW_CFG_BCE);
|
|
|
|
|
|
|
|
smsc_write_reg(sc, SMSC_HW_CFG, reg_val);
|
|
|
|
|
|
|
|
/* Clear the status register ? */
|
|
|
|
smsc_write_reg(sc, SMSC_INTR_STATUS, 0xffffffff);
|
|
|
|
|
|
|
|
/* Read and display the revision register */
|
|
|
|
if ((err = smsc_read_reg(sc, SMSC_ID_REV, &sc->sc_rev_id)) < 0) {
|
|
|
|
smsc_warn_printf(sc, "failed to read ID_REV (err = %d)\n", err);
|
|
|
|
goto init_failed;
|
|
|
|
}
|
|
|
|
|
|
|
|
device_printf(sc->sc_ue.ue_dev, "chip 0x%04lx, rev. %04lx\n",
|
|
|
|
(sc->sc_rev_id & SMSC_ID_REV_CHIP_ID_MASK) >> 16,
|
|
|
|
(sc->sc_rev_id & SMSC_ID_REV_CHIP_REV_MASK));
|
|
|
|
|
|
|
|
/* GPIO/LED setup */
|
|
|
|
reg_val = SMSC_LED_GPIO_CFG_SPD_LED | SMSC_LED_GPIO_CFG_LNK_LED |
|
|
|
|
SMSC_LED_GPIO_CFG_FDX_LED;
|
|
|
|
smsc_write_reg(sc, SMSC_LED_GPIO_CFG, reg_val);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialise the TX interface
|
|
|
|
*/
|
|
|
|
smsc_write_reg(sc, SMSC_FLOW, 0);
|
|
|
|
|
|
|
|
smsc_write_reg(sc, SMSC_AFC_CFG, AFC_CFG_DEFAULT);
|
|
|
|
|
|
|
|
/* Read the current MAC configuration */
|
|
|
|
if ((err = smsc_read_reg(sc, SMSC_MAC_CSR, &sc->sc_mac_csr)) < 0) {
|
|
|
|
smsc_warn_printf(sc, "failed to read MAC_CSR (err=%d)\n", err);
|
|
|
|
goto init_failed;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Vlan */
|
|
|
|
smsc_write_reg(sc, SMSC_VLAN1, (uint32_t)ETHERTYPE_VLAN);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Initialise the PHY
|
|
|
|
*/
|
|
|
|
if ((err = smsc_phy_init(sc)) != 0)
|
|
|
|
goto init_failed;
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Start TX
|
|
|
|
*/
|
|
|
|
sc->sc_mac_csr |= SMSC_MAC_CSR_TXEN;
|
|
|
|
smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
|
|
|
|
smsc_write_reg(sc, SMSC_TX_CFG, SMSC_TX_CFG_ON);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Start RX
|
|
|
|
*/
|
|
|
|
sc->sc_mac_csr |= SMSC_MAC_CSR_RXEN;
|
|
|
|
smsc_write_reg(sc, SMSC_MAC_CSR, sc->sc_mac_csr);
|
|
|
|
|
|
|
|
if (!locked)
|
|
|
|
SMSC_UNLOCK(sc);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
|
|
|
|
init_failed:
|
|
|
|
if (!locked)
|
|
|
|
SMSC_UNLOCK(sc);
|
|
|
|
|
|
|
|
smsc_err_printf(sc, "smsc_chip_init failed (err=%d)\n", err);
|
|
|
|
return (err);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_ioctl - ioctl function for the device
|
|
|
|
* @ifp: interface pointer
|
|
|
|
* @cmd: the ioctl command
|
|
|
|
* @data: data passed in the ioctl call, typically a pointer to struct ifreq.
|
|
|
|
*
|
|
|
|
* The ioctl routine is overridden to detect change requests for the H/W
|
|
|
|
* checksum capabilities.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* 0 on success and an error code on failure.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
|
|
|
|
{
|
|
|
|
struct usb_ether *ue = ifp->if_softc;
|
|
|
|
struct smsc_softc *sc;
|
|
|
|
struct ifreq *ifr;
|
|
|
|
int rc;
|
|
|
|
int mask;
|
|
|
|
int reinit;
|
|
|
|
|
|
|
|
if (cmd == SIOCSIFCAP) {
|
|
|
|
|
|
|
|
sc = uether_getsc(ue);
|
|
|
|
ifr = (struct ifreq *)data;
|
|
|
|
|
|
|
|
SMSC_LOCK(sc);
|
|
|
|
|
|
|
|
rc = 0;
|
|
|
|
reinit = 0;
|
|
|
|
|
|
|
|
mask = ifr->ifr_reqcap ^ ifp->if_capenable;
|
|
|
|
|
|
|
|
/* Modify the RX CSUM enable bits */
|
|
|
|
if ((mask & IFCAP_RXCSUM) != 0 &&
|
|
|
|
(ifp->if_capabilities & IFCAP_RXCSUM) != 0) {
|
|
|
|
ifp->if_capenable ^= IFCAP_RXCSUM;
|
|
|
|
|
|
|
|
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
|
|
|
|
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
|
|
|
|
reinit = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
SMSC_UNLOCK(sc);
|
|
|
|
if (reinit)
|
|
|
|
#if __FreeBSD_version > 1000000
|
|
|
|
uether_init(ue);
|
|
|
|
#else
|
|
|
|
ifp->if_init(ue);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
} else {
|
|
|
|
rc = uether_ioctl(ifp, cmd, data);
|
|
|
|
}
|
|
|
|
|
|
|
|
return (rc);
|
|
|
|
}
|
|
|
|
|
2012-11-23 03:34:12 +00:00
|
|
|
#ifdef FDT
|
|
|
|
/**
|
|
|
|
* Get MAC address from FDT blob. Firmware or loader should fill
|
|
|
|
* mac-address or local-mac-address property Returns 0 if MAC address
|
|
|
|
* obtained, error code otherwise
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_fdt_find_mac(unsigned char *mac)
|
|
|
|
{
|
|
|
|
phandle_t child, parent, root;
|
|
|
|
int len;
|
|
|
|
|
|
|
|
root = OF_finddevice("/");
|
|
|
|
len = 0;
|
|
|
|
parent = root;
|
|
|
|
|
|
|
|
/* Traverse through entire tree to find nodes usb ethernet nodes */
|
|
|
|
for (child = OF_child(parent); child != 0; child = OF_peer(child)) {
|
|
|
|
|
|
|
|
/* Find a 'leaf'. Start the search from this node. */
|
|
|
|
while (OF_child(child)) {
|
|
|
|
parent = child;
|
|
|
|
child = OF_child(child);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (fdt_is_compatible(child, "net,ethernet") &&
|
|
|
|
fdt_is_compatible(child, "usb,device")) {
|
|
|
|
|
|
|
|
/* Check if there is property */
|
|
|
|
if ((len = OF_getproplen(child, "local-mac-address")) > 0) {
|
|
|
|
if (len != ETHER_ADDR_LEN)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
OF_getprop(child, "local-mac-address", mac,
|
|
|
|
ETHER_ADDR_LEN);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((len = OF_getproplen(child, "mac-address")) > 0) {
|
|
|
|
if (len != ETHER_ADDR_LEN)
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
OF_getprop(child, "mac-address", mac,
|
|
|
|
ETHER_ADDR_LEN);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (OF_peer(child) == 0) {
|
|
|
|
/* No more siblings. */
|
|
|
|
child = parent;
|
|
|
|
parent = OF_parent(child);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return (ENXIO);
|
|
|
|
}
|
|
|
|
#endif
|
2012-08-15 04:03:55 +00:00
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_attach_post - Called after the driver attached to the USB interface
|
|
|
|
* @ue: the USB ethernet device
|
|
|
|
*
|
|
|
|
* This is where the chip is intialised for the first time. This is different
|
|
|
|
* from the smsc_init() function in that that one is designed to setup the
|
|
|
|
* H/W to match the UE settings and can be called after a reset.
|
|
|
|
*
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
smsc_attach_post(struct usb_ether *ue)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = uether_getsc(ue);
|
|
|
|
uint32_t mac_h, mac_l;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
smsc_dbg_printf(sc, "smsc_attach_post\n");
|
|
|
|
|
|
|
|
/* Setup some of the basics */
|
|
|
|
sc->sc_phyno = 1;
|
|
|
|
|
|
|
|
|
|
|
|
/* Attempt to get the mac address, if an EEPROM is not attached this
|
|
|
|
* will just return FF:FF:FF:FF:FF:FF, so in such cases we invent a MAC
|
|
|
|
* address based on urandom.
|
|
|
|
*/
|
|
|
|
memset(sc->sc_ue.ue_eaddr, 0xff, ETHER_ADDR_LEN);
|
|
|
|
|
|
|
|
/* Check if there is already a MAC address in the register */
|
|
|
|
if ((smsc_read_reg(sc, SMSC_MAC_ADDRL, &mac_l) == 0) &&
|
|
|
|
(smsc_read_reg(sc, SMSC_MAC_ADDRH, &mac_h) == 0)) {
|
|
|
|
sc->sc_ue.ue_eaddr[5] = (uint8_t)((mac_h >> 8) & 0xff);
|
|
|
|
sc->sc_ue.ue_eaddr[4] = (uint8_t)((mac_h) & 0xff);
|
|
|
|
sc->sc_ue.ue_eaddr[3] = (uint8_t)((mac_l >> 24) & 0xff);
|
|
|
|
sc->sc_ue.ue_eaddr[2] = (uint8_t)((mac_l >> 16) & 0xff);
|
|
|
|
sc->sc_ue.ue_eaddr[1] = (uint8_t)((mac_l >> 8) & 0xff);
|
|
|
|
sc->sc_ue.ue_eaddr[0] = (uint8_t)((mac_l) & 0xff);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* MAC address is not set so try to read from EEPROM, if that fails generate
|
|
|
|
* a random MAC address.
|
|
|
|
*/
|
|
|
|
if (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)) {
|
|
|
|
|
|
|
|
err = smsc_eeprom_read(sc, 0x01, sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN);
|
2012-11-23 03:34:12 +00:00
|
|
|
#ifdef FDT
|
|
|
|
if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr)))
|
|
|
|
err = smsc_fdt_find_mac(sc->sc_ue.ue_eaddr);
|
|
|
|
#endif
|
2012-08-15 04:03:55 +00:00
|
|
|
if ((err != 0) || (!ETHER_IS_VALID(sc->sc_ue.ue_eaddr))) {
|
|
|
|
read_random(sc->sc_ue.ue_eaddr, ETHER_ADDR_LEN);
|
|
|
|
sc->sc_ue.ue_eaddr[0] &= ~0x01; /* unicast */
|
|
|
|
sc->sc_ue.ue_eaddr[0] |= 0x02; /* locally administered */
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Initialise the chip for the first time */
|
|
|
|
smsc_chip_init(sc);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_attach_post_sub - Called after the driver attached to the USB interface
|
|
|
|
* @ue: the USB ethernet device
|
|
|
|
*
|
|
|
|
* Most of this is boilerplate code and copied from the base USB ethernet
|
|
|
|
* driver. It has been overriden so that we can indicate to the system that
|
|
|
|
* the chip supports H/W checksumming.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0 on success or a negative error code.
|
|
|
|
*/
|
|
|
|
#if __FreeBSD_version > 1000000
|
|
|
|
static int
|
|
|
|
smsc_attach_post_sub(struct usb_ether *ue)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc;
|
|
|
|
struct ifnet *ifp;
|
|
|
|
int error;
|
|
|
|
|
|
|
|
sc = uether_getsc(ue);
|
|
|
|
ifp = ue->ue_ifp;
|
|
|
|
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
|
|
|
|
ifp->if_start = uether_start;
|
|
|
|
ifp->if_ioctl = smsc_ioctl;
|
|
|
|
ifp->if_init = uether_init;
|
|
|
|
IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
|
|
|
|
ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
|
|
|
|
IFQ_SET_READY(&ifp->if_snd);
|
|
|
|
|
|
|
|
/* The chip supports TCP/UDP checksum offloading on TX and RX paths, however
|
|
|
|
* currently only RX checksum is supported in the driver (see top of file).
|
|
|
|
*/
|
|
|
|
ifp->if_capabilities |= IFCAP_RXCSUM;
|
|
|
|
ifp->if_hwassist = 0;
|
|
|
|
|
|
|
|
/* TX checksuming is disabled (for now?)
|
|
|
|
ifp->if_capabilities |= IFCAP_TXCSUM;
|
|
|
|
ifp->if_capenable |= IFCAP_TXCSUM;
|
|
|
|
ifp->if_hwassist = CSUM_TCP | CSUM_UDP;
|
|
|
|
*/
|
|
|
|
|
|
|
|
ifp->if_capenable = ifp->if_capabilities;
|
|
|
|
|
|
|
|
mtx_lock(&Giant);
|
|
|
|
error = mii_attach(ue->ue_dev, &ue->ue_miibus, ifp,
|
|
|
|
uether_ifmedia_upd, ue->ue_methods->ue_mii_sts,
|
|
|
|
BMSR_DEFCAPMASK, sc->sc_phyno, MII_OFFSET_ANY, 0);
|
|
|
|
mtx_unlock(&Giant);
|
|
|
|
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
#endif /* __FreeBSD_version > 1000000 */
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_probe - Probe the interface.
|
|
|
|
* @dev: smsc device handle
|
|
|
|
*
|
|
|
|
* Checks if the device is a match for this driver.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0 on success or an error code on failure.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_probe(device_t dev)
|
|
|
|
{
|
|
|
|
struct usb_attach_arg *uaa = device_get_ivars(dev);
|
|
|
|
|
|
|
|
if (uaa->usb_mode != USB_MODE_HOST)
|
|
|
|
return (ENXIO);
|
|
|
|
if (uaa->info.bConfigIndex != SMSC_CONFIG_INDEX)
|
|
|
|
return (ENXIO);
|
|
|
|
if (uaa->info.bIfaceIndex != SMSC_IFACE_IDX)
|
|
|
|
return (ENXIO);
|
|
|
|
|
|
|
|
return (usbd_lookup_id_by_uaa(smsc_devs, sizeof(smsc_devs), uaa));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_attach - Attach the interface.
|
|
|
|
* @dev: smsc device handle
|
|
|
|
*
|
|
|
|
* Allocate softc structures, do ifmedia setup and ethernet/BPF attach.
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0 on success or a negative error code.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_attach(device_t dev)
|
|
|
|
{
|
|
|
|
struct usb_attach_arg *uaa = device_get_ivars(dev);
|
|
|
|
struct smsc_softc *sc = device_get_softc(dev);
|
|
|
|
struct usb_ether *ue = &sc->sc_ue;
|
|
|
|
uint8_t iface_index;
|
|
|
|
int err;
|
|
|
|
|
|
|
|
sc->sc_flags = USB_GET_DRIVER_INFO(uaa);
|
|
|
|
|
|
|
|
device_set_usb_desc(dev);
|
|
|
|
|
|
|
|
mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
|
|
|
|
|
|
|
|
/* Setup the endpoints for the SMSC LAN95xx device(s) */
|
|
|
|
iface_index = SMSC_IFACE_IDX;
|
|
|
|
err = usbd_transfer_setup(uaa->device, &iface_index, sc->sc_xfer,
|
|
|
|
smsc_config, SMSC_N_TRANSFER, sc, &sc->sc_mtx);
|
|
|
|
if (err) {
|
|
|
|
device_printf(dev, "error: allocating USB transfers failed\n");
|
|
|
|
goto detach;
|
|
|
|
}
|
|
|
|
|
|
|
|
ue->ue_sc = sc;
|
|
|
|
ue->ue_dev = dev;
|
|
|
|
ue->ue_udev = uaa->device;
|
|
|
|
ue->ue_mtx = &sc->sc_mtx;
|
|
|
|
ue->ue_methods = &smsc_ue_methods;
|
|
|
|
|
|
|
|
err = uether_ifattach(ue);
|
|
|
|
if (err) {
|
|
|
|
device_printf(dev, "error: could not attach interface\n");
|
|
|
|
goto detach;
|
|
|
|
}
|
|
|
|
return (0); /* success */
|
|
|
|
|
|
|
|
detach:
|
|
|
|
smsc_detach(dev);
|
|
|
|
return (ENXIO); /* failure */
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* smsc_detach - Detach the interface.
|
|
|
|
* @dev: smsc device handle
|
|
|
|
*
|
|
|
|
* RETURNS:
|
|
|
|
* Returns 0.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
smsc_detach(device_t dev)
|
|
|
|
{
|
|
|
|
struct smsc_softc *sc = device_get_softc(dev);
|
|
|
|
struct usb_ether *ue = &sc->sc_ue;
|
|
|
|
|
|
|
|
usbd_transfer_unsetup(sc->sc_xfer, SMSC_N_TRANSFER);
|
|
|
|
uether_ifdetach(ue);
|
|
|
|
mtx_destroy(&sc->sc_mtx);
|
|
|
|
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static device_method_t smsc_methods[] = {
|
|
|
|
/* Device interface */
|
|
|
|
DEVMETHOD(device_probe, smsc_probe),
|
|
|
|
DEVMETHOD(device_attach, smsc_attach),
|
|
|
|
DEVMETHOD(device_detach, smsc_detach),
|
|
|
|
|
|
|
|
/* bus interface */
|
|
|
|
DEVMETHOD(bus_print_child, bus_generic_print_child),
|
|
|
|
DEVMETHOD(bus_driver_added, bus_generic_driver_added),
|
|
|
|
|
|
|
|
/* MII interface */
|
|
|
|
DEVMETHOD(miibus_readreg, smsc_miibus_readreg),
|
|
|
|
DEVMETHOD(miibus_writereg, smsc_miibus_writereg),
|
|
|
|
DEVMETHOD(miibus_statchg, smsc_miibus_statchg),
|
|
|
|
|
2013-01-30 18:01:20 +00:00
|
|
|
DEVMETHOD_END
|
2012-08-15 04:03:55 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
static driver_t smsc_driver = {
|
|
|
|
.name = "smsc",
|
|
|
|
.methods = smsc_methods,
|
|
|
|
.size = sizeof(struct smsc_softc),
|
|
|
|
};
|
|
|
|
|
|
|
|
static devclass_t smsc_devclass;
|
|
|
|
|
|
|
|
DRIVER_MODULE(smsc, uhub, smsc_driver, smsc_devclass, NULL, 0);
|
|
|
|
DRIVER_MODULE(miibus, smsc, miibus_driver, miibus_devclass, 0, 0);
|
|
|
|
MODULE_DEPEND(smsc, uether, 1, 1, 1);
|
|
|
|
MODULE_DEPEND(smsc, usb, 1, 1, 1);
|
|
|
|
MODULE_DEPEND(smsc, ether, 1, 1, 1);
|
|
|
|
MODULE_DEPEND(smsc, miibus, 1, 1, 1);
|
|
|
|
MODULE_VERSION(smsc, 1);
|