9e6b53136e
them more compact and readable.
651 lines
16 KiB
C
651 lines
16 KiB
C
/*-
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* Copyright (c) 1997, 1998, 1999, 2000
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* Bill Paul <wpaul@ee.columbia.edu>. 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Bill Paul.
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* 4. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* 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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* CATC USB-EL1210A USB to ethernet driver. Used in the CATC Netmate
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* adapters and others.
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*
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* Written by Bill Paul <wpaul@ee.columbia.edu>
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* Electrical Engineering Department
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* Columbia University, New York City
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*/
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/*
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* The CATC USB-EL1210A provides USB ethernet support at 10Mbps. The
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* RX filter uses a 512-bit multicast hash table, single perfect entry
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* for the station address, and promiscuous mode. Unlike the ADMtek
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* and KLSI chips, the CATC ASIC supports read and write combining
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* mode where multiple packets can be transfered using a single bulk
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* transaction, which helps performance a great deal.
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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/linker_set.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 <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 cue_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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#include <dev/usb/net/if_cuereg.h>
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/*
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* Various supported device vendors/products.
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*/
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/* Belkin F5U111 adapter covered by NETMATE entry */
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static const struct usb_device_id cue_devs[] = {
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#define CUE_DEV(v,p) { USB_VP(USB_VENDOR_##v, USB_PRODUCT_##v##_##p) }
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CUE_DEV(CATC, NETMATE),
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CUE_DEV(CATC, NETMATE2),
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CUE_DEV(SMARTBRIDGES, SMARTLINK),
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#undef CUE_DEV
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};
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/* prototypes */
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static device_probe_t cue_probe;
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static device_attach_t cue_attach;
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static device_detach_t cue_detach;
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static usb_callback_t cue_bulk_read_callback;
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static usb_callback_t cue_bulk_write_callback;
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static uether_fn_t cue_attach_post;
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static uether_fn_t cue_init;
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static uether_fn_t cue_stop;
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static uether_fn_t cue_start;
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static uether_fn_t cue_tick;
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static uether_fn_t cue_setmulti;
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static uether_fn_t cue_setpromisc;
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static uint8_t cue_csr_read_1(struct cue_softc *, uint16_t);
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static uint16_t cue_csr_read_2(struct cue_softc *, uint8_t);
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static int cue_csr_write_1(struct cue_softc *, uint16_t, uint16_t);
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static int cue_mem(struct cue_softc *, uint8_t, uint16_t, void *, int);
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static int cue_getmac(struct cue_softc *, void *);
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static uint32_t cue_mchash(const uint8_t *);
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static void cue_reset(struct cue_softc *);
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#if USB_DEBUG
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static int cue_debug = 0;
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SYSCTL_NODE(_hw_usb, OID_AUTO, cue, CTLFLAG_RW, 0, "USB cue");
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SYSCTL_INT(_hw_usb_cue, OID_AUTO, debug, CTLFLAG_RW, &cue_debug, 0,
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"Debug level");
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#endif
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static const struct usb_config cue_config[CUE_N_TRANSFER] = {
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[CUE_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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.bufsize = (MCLBYTES + 2),
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.flags = {.pipe_bof = 1,},
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.callback = cue_bulk_write_callback,
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.timeout = 10000, /* 10 seconds */
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},
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[CUE_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 = (MCLBYTES + 2),
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.flags = {.pipe_bof = 1,.short_xfer_ok = 1,},
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.callback = cue_bulk_read_callback,
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},
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};
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static device_method_t cue_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, cue_probe),
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DEVMETHOD(device_attach, cue_attach),
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DEVMETHOD(device_detach, cue_detach),
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{0, 0}
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};
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static driver_t cue_driver = {
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.name = "cue",
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.methods = cue_methods,
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.size = sizeof(struct cue_softc),
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};
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static devclass_t cue_devclass;
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DRIVER_MODULE(cue, uhub, cue_driver, cue_devclass, NULL, 0);
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MODULE_DEPEND(cue, uether, 1, 1, 1);
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MODULE_DEPEND(cue, usb, 1, 1, 1);
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MODULE_DEPEND(cue, ether, 1, 1, 1);
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static const struct usb_ether_methods cue_ue_methods = {
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.ue_attach_post = cue_attach_post,
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.ue_start = cue_start,
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.ue_init = cue_init,
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.ue_stop = cue_stop,
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.ue_tick = cue_tick,
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.ue_setmulti = cue_setmulti,
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.ue_setpromisc = cue_setpromisc,
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};
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#define CUE_SETBIT(sc, reg, x) \
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cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) | (x))
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#define CUE_CLRBIT(sc, reg, x) \
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cue_csr_write_1(sc, reg, cue_csr_read_1(sc, reg) & ~(x))
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static uint8_t
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cue_csr_read_1(struct cue_softc *sc, uint16_t reg)
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{
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struct usb_device_request req;
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uint8_t val;
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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req.bRequest = CUE_CMD_READREG;
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USETW(req.wValue, 0);
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USETW(req.wIndex, reg);
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USETW(req.wLength, 1);
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if (uether_do_request(&sc->sc_ue, &req, &val, 1000)) {
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/* ignore any errors */
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}
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return (val);
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}
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static uint16_t
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cue_csr_read_2(struct cue_softc *sc, uint8_t reg)
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{
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struct usb_device_request req;
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uint16_t val;
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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req.bRequest = CUE_CMD_READREG;
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USETW(req.wValue, 0);
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USETW(req.wIndex, reg);
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USETW(req.wLength, 2);
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(void)uether_do_request(&sc->sc_ue, &req, &val, 1000);
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return (le16toh(val));
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}
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static int
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cue_csr_write_1(struct cue_softc *sc, uint16_t reg, uint16_t val)
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{
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struct usb_device_request req;
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req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
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req.bRequest = CUE_CMD_WRITEREG;
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USETW(req.wValue, val);
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USETW(req.wIndex, reg);
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USETW(req.wLength, 0);
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return (uether_do_request(&sc->sc_ue, &req, NULL, 1000));
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}
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static int
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cue_mem(struct cue_softc *sc, uint8_t cmd, uint16_t addr, void *buf, int len)
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{
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struct usb_device_request req;
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if (cmd == CUE_CMD_READSRAM)
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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else
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req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
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req.bRequest = cmd;
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USETW(req.wValue, 0);
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USETW(req.wIndex, addr);
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USETW(req.wLength, len);
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return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
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}
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static int
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cue_getmac(struct cue_softc *sc, void *buf)
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{
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struct usb_device_request req;
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req.bmRequestType = UT_READ_VENDOR_DEVICE;
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req.bRequest = CUE_CMD_GET_MACADDR;
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USETW(req.wValue, 0);
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USETW(req.wIndex, 0);
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USETW(req.wLength, ETHER_ADDR_LEN);
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return (uether_do_request(&sc->sc_ue, &req, buf, 1000));
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}
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#define CUE_BITS 9
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static uint32_t
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cue_mchash(const uint8_t *addr)
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{
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uint32_t crc;
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/* Compute CRC for the address value. */
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crc = ether_crc32_le(addr, ETHER_ADDR_LEN);
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return (crc & ((1 << CUE_BITS) - 1));
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}
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static void
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cue_setpromisc(struct usb_ether *ue)
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{
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struct cue_softc *sc = uether_getsc(ue);
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struct ifnet *ifp = uether_getifp(ue);
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CUE_LOCK_ASSERT(sc, MA_OWNED);
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/* if we want promiscuous mode, set the allframes bit */
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if (ifp->if_flags & IFF_PROMISC)
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CUE_SETBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC);
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else
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CUE_CLRBIT(sc, CUE_ETHCTL, CUE_ETHCTL_PROMISC);
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/* write multicast hash-bits */
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cue_setmulti(ue);
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}
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static void
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cue_setmulti(struct usb_ether *ue)
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{
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struct cue_softc *sc = uether_getsc(ue);
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struct ifnet *ifp = uether_getifp(ue);
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struct ifmultiaddr *ifma;
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uint32_t h = 0, i;
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uint8_t hashtbl[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
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CUE_LOCK_ASSERT(sc, MA_OWNED);
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if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) {
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for (i = 0; i < 8; i++)
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hashtbl[i] = 0xff;
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cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR,
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&hashtbl, 8);
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return;
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}
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/* now program new ones */
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if_maddr_rlock(ifp);
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TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link)
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{
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if (ifma->ifma_addr->sa_family != AF_LINK)
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continue;
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h = cue_mchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr));
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hashtbl[h >> 3] |= 1 << (h & 0x7);
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}
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if_maddr_runlock(ifp);
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/*
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* Also include the broadcast address in the filter
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* so we can receive broadcast frames.
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*/
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if (ifp->if_flags & IFF_BROADCAST) {
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h = cue_mchash(ifp->if_broadcastaddr);
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hashtbl[h >> 3] |= 1 << (h & 0x7);
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}
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cue_mem(sc, CUE_CMD_WRITESRAM, CUE_MCAST_TABLE_ADDR, &hashtbl, 8);
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}
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static void
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cue_reset(struct cue_softc *sc)
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{
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struct usb_device_request req;
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req.bmRequestType = UT_WRITE_VENDOR_DEVICE;
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req.bRequest = CUE_CMD_RESET;
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USETW(req.wValue, 0);
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USETW(req.wIndex, 0);
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USETW(req.wLength, 0);
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if (uether_do_request(&sc->sc_ue, &req, NULL, 1000)) {
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/* ignore any errors */
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}
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/*
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* wait a little while for the chip to get its brains in order:
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*/
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uether_pause(&sc->sc_ue, hz / 100);
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}
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static void
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cue_attach_post(struct usb_ether *ue)
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{
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struct cue_softc *sc = uether_getsc(ue);
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cue_getmac(sc, ue->ue_eaddr);
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}
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static int
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cue_probe(device_t dev)
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{
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struct usb_attach_arg *uaa = device_get_ivars(dev);
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if (uaa->usb_mode != USB_MODE_HOST)
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return (ENXIO);
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if (uaa->info.bConfigIndex != CUE_CONFIG_IDX)
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return (ENXIO);
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if (uaa->info.bIfaceIndex != CUE_IFACE_IDX)
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return (ENXIO);
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return (usbd_lookup_id_by_uaa(cue_devs, sizeof(cue_devs), uaa));
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}
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/*
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* Attach the interface. Allocate softc structures, do ifmedia
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* setup and ethernet/BPF attach.
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*/
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static int
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cue_attach(device_t dev)
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{
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struct usb_attach_arg *uaa = device_get_ivars(dev);
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struct cue_softc *sc = device_get_softc(dev);
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struct usb_ether *ue = &sc->sc_ue;
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uint8_t iface_index;
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int error;
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device_set_usb_desc(dev);
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mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF);
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iface_index = CUE_IFACE_IDX;
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error = usbd_transfer_setup(uaa->device, &iface_index,
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sc->sc_xfer, cue_config, CUE_N_TRANSFER, sc, &sc->sc_mtx);
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if (error) {
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device_printf(dev, "allocating USB transfers failed\n");
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goto detach;
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}
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ue->ue_sc = sc;
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ue->ue_dev = dev;
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ue->ue_udev = uaa->device;
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ue->ue_mtx = &sc->sc_mtx;
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ue->ue_methods = &cue_ue_methods;
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error = uether_ifattach(ue);
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if (error) {
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device_printf(dev, "could not attach interface\n");
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goto detach;
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}
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return (0); /* success */
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detach:
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cue_detach(dev);
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return (ENXIO); /* failure */
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}
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static int
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cue_detach(device_t dev)
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{
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struct cue_softc *sc = device_get_softc(dev);
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struct usb_ether *ue = &sc->sc_ue;
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usbd_transfer_unsetup(sc->sc_xfer, CUE_N_TRANSFER);
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uether_ifdetach(ue);
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mtx_destroy(&sc->sc_mtx);
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return (0);
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}
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static void
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cue_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error)
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{
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struct cue_softc *sc = usbd_xfer_softc(xfer);
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struct usb_ether *ue = &sc->sc_ue;
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struct ifnet *ifp = uether_getifp(ue);
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struct usb_page_cache *pc;
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uint8_t buf[2];
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int len;
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int actlen;
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usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL);
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switch (USB_GET_STATE(xfer)) {
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case USB_ST_TRANSFERRED:
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if (actlen <= (2 + sizeof(struct ether_header))) {
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ifp->if_ierrors++;
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goto tr_setup;
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}
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pc = usbd_xfer_get_frame(xfer, 0);
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usbd_copy_out(pc, 0, buf, 2);
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actlen -= 2;
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len = buf[0] | (buf[1] << 8);
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len = min(actlen, len);
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uether_rxbuf(ue, pc, 2, len);
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/* FALLTHROUGH */
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case USB_ST_SETUP:
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tr_setup:
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usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer));
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usbd_transfer_submit(xfer);
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uether_rxflush(ue);
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return;
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default: /* Error */
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DPRINTF("bulk read error, %s\n",
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usbd_errstr(error));
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if (error != USB_ERR_CANCELLED) {
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/* try to clear stall first */
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usbd_xfer_set_stall(xfer);
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goto tr_setup;
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}
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return;
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}
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}
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static void
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cue_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error)
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{
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struct cue_softc *sc = usbd_xfer_softc(xfer);
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struct ifnet *ifp = uether_getifp(&sc->sc_ue);
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struct usb_page_cache *pc;
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struct mbuf *m;
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uint8_t buf[2];
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switch (USB_GET_STATE(xfer)) {
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case USB_ST_TRANSFERRED:
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DPRINTFN(11, "transfer complete\n");
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ifp->if_opackets++;
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/* FALLTHROUGH */
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case USB_ST_SETUP:
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tr_setup:
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IFQ_DRV_DEQUEUE(&ifp->if_snd, m);
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if (m == NULL)
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return;
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if (m->m_pkthdr.len > MCLBYTES)
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m->m_pkthdr.len = MCLBYTES;
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usbd_xfer_set_frame_len(xfer, 0, (m->m_pkthdr.len + 2));
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/* the first two bytes are the frame length */
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buf[0] = (uint8_t)(m->m_pkthdr.len);
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buf[1] = (uint8_t)(m->m_pkthdr.len >> 8);
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pc = usbd_xfer_get_frame(xfer, 0);
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usbd_copy_in(pc, 0, buf, 2);
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usbd_m_copy_in(pc, 2, m, 0, m->m_pkthdr.len);
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/*
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* If there's a BPF listener, bounce a copy of this frame
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* to him.
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*/
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BPF_MTAP(ifp, m);
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m_freem(m);
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usbd_transfer_submit(xfer);
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return;
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default: /* Error */
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DPRINTFN(11, "transfer error, %s\n",
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usbd_errstr(error));
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ifp->if_oerrors++;
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if (error != USB_ERR_CANCELLED) {
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/* try to clear stall first */
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usbd_xfer_set_stall(xfer);
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goto tr_setup;
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}
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return;
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}
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}
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static void
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cue_tick(struct usb_ether *ue)
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{
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struct cue_softc *sc = uether_getsc(ue);
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struct ifnet *ifp = uether_getifp(ue);
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CUE_LOCK_ASSERT(sc, MA_OWNED);
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ifp->if_collisions += cue_csr_read_2(sc, CUE_TX_SINGLECOLL);
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ifp->if_collisions += cue_csr_read_2(sc, CUE_TX_MULTICOLL);
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ifp->if_collisions += cue_csr_read_2(sc, CUE_TX_EXCESSCOLL);
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if (cue_csr_read_2(sc, CUE_RX_FRAMEERR))
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ifp->if_ierrors++;
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}
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static void
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cue_start(struct usb_ether *ue)
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{
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struct cue_softc *sc = uether_getsc(ue);
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/*
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* start the USB transfers, if not already started:
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*/
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usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_RD]);
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usbd_transfer_start(sc->sc_xfer[CUE_BULK_DT_WR]);
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}
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static void
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cue_init(struct usb_ether *ue)
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{
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struct cue_softc *sc = uether_getsc(ue);
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struct ifnet *ifp = uether_getifp(ue);
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int i;
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CUE_LOCK_ASSERT(sc, MA_OWNED);
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/*
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* Cancel pending I/O and free all RX/TX buffers.
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*/
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cue_stop(ue);
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#if 0
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cue_reset(sc);
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#endif
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/* Set MAC address */
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for (i = 0; i < ETHER_ADDR_LEN; i++)
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cue_csr_write_1(sc, CUE_PAR0 - i, IF_LLADDR(ifp)[i]);
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/* Enable RX logic. */
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cue_csr_write_1(sc, CUE_ETHCTL, CUE_ETHCTL_RX_ON | CUE_ETHCTL_MCAST_ON);
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/* Load the multicast filter */
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cue_setpromisc(ue);
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/*
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* Set the number of RX and TX buffers that we want
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* to reserve inside the ASIC.
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*/
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cue_csr_write_1(sc, CUE_RX_BUFPKTS, CUE_RX_FRAMES);
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cue_csr_write_1(sc, CUE_TX_BUFPKTS, CUE_TX_FRAMES);
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/* Set advanced operation modes. */
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cue_csr_write_1(sc, CUE_ADVANCED_OPMODES,
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CUE_AOP_EMBED_RXLEN | 0x01);/* 1 wait state */
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/* Program the LED operation. */
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cue_csr_write_1(sc, CUE_LEDCTL, CUE_LEDCTL_FOLLOW_LINK);
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usbd_xfer_set_stall(sc->sc_xfer[CUE_BULK_DT_WR]);
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ifp->if_drv_flags |= IFF_DRV_RUNNING;
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cue_start(ue);
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}
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/*
|
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* Stop the adapter and free any mbufs allocated to the
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* RX and TX lists.
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*/
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static void
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cue_stop(struct usb_ether *ue)
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{
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struct cue_softc *sc = uether_getsc(ue);
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struct ifnet *ifp = uether_getifp(ue);
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CUE_LOCK_ASSERT(sc, MA_OWNED);
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ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
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/*
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* stop all the transfers, if not already stopped:
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*/
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usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_WR]);
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usbd_transfer_stop(sc->sc_xfer[CUE_BULK_DT_RD]);
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cue_csr_write_1(sc, CUE_ETHCTL, 0);
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cue_reset(sc);
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}
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