C++ device_get_sysctl_tree函数代码示例

static void
acpi_cpu_startup_cx(struct acpi_cpu_softc *sc)
{
    acpi_cpu_cx_list(sc);
    
    SYSCTL_ADD_STRING(&sc->cpu_sysctl_ctx,
		      SYSCTL_CHILDREN(device_get_sysctl_tree(sc->cpu_dev)),
		      OID_AUTO, "cx_supported", CTLFLAG_RD,
		      sc->cpu_cx_supported, 0,
		      "Cx/microsecond values for supported Cx states");
    SYSCTL_ADD_PROC(&sc->cpu_sysctl_ctx,
		    SYSCTL_CHILDREN(device_get_sysctl_tree(sc->cpu_dev)),
		    OID_AUTO, "cx_lowest", CTLTYPE_STRING | CTLFLAG_RW,
		    (void *)sc, 0, acpi_cpu_cx_lowest_sysctl, "A",
		    "lowest Cx sleep state to use");
    SYSCTL_ADD_PROC(&sc->cpu_sysctl_ctx,
		    SYSCTL_CHILDREN(device_get_sysctl_tree(sc->cpu_dev)),
		    OID_AUTO, "cx_usage", CTLTYPE_STRING | CTLFLAG_RD,
		    (void *)sc, 0, acpi_cpu_usage_sysctl, "A",
		    "percent usage for each Cx state");

#ifdef notyet
    /* Signal platform that we can handle _CST notification. */
    if (!cpu_cx_generic && cpu_cst_cnt != 0) {
	ACPI_LOCK(acpi);
	AcpiOsWritePort(cpu_smi_cmd, cpu_cst_cnt, 8);
	ACPI_UNLOCK(acpi);
    }
#endif
}

void
ucom_set_pnpinfo_usb(struct ucom_super_softc *ssc, device_t dev)
{
	char buf[64];
	uint8_t iface_index;
	struct usb_attach_arg *uaa;

	snprintf(buf, sizeof(buf), "ttyname=" UCOM_TTY_PREFIX
	    "%d ttyports=%d", ssc->sc_unit, ssc->sc_subunits);

	/* Store the PNP info in the first interface for the device */
	uaa = device_get_ivars(dev);
	iface_index = uaa->info.bIfaceIndex;
    
	if (usbd_set_pnpinfo(uaa->device, iface_index, buf) != 0)
		device_printf(dev, "Could not set PNP info\n");

	/*
	 * The following information is also replicated in the PNP-info
	 * string which is registered above:
	 */
	if (ssc->sc_sysctl_ttyname == NULL) {
		ssc->sc_sysctl_ttyname = SYSCTL_ADD_STRING(NULL,
		    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
		    OID_AUTO, "ttyname", CTLFLAG_RD, ssc->sc_ttyname, 0,
		    "TTY device basename");
	}
	if (ssc->sc_sysctl_ttyports == NULL) {
		ssc->sc_sysctl_ttyports = SYSCTL_ADD_INT(NULL,
		    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
		    OID_AUTO, "ttyports", CTLFLAG_RD,
		    NULL, ssc->sc_subunits, "Number of ports");
	}
}

static int
acpi_sony_attach(device_t dev)
{
	struct acpi_sony_softc *sc;
	int i;

	sc = device_get_softc(dev);
	acpi_GetInteger(acpi_get_handle(dev), ACPI_SONY_GET_PID, &sc->pid);
	device_printf(dev, "PID %x\n", sc->pid);
	for (i = 0 ; acpi_sony_oids[i].nodename != NULL; i++) {
		if (acpi_sony_oids[i].setmethod != NULL) {
			SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
			    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
			    i, acpi_sony_oids[i].nodename ,
			    CTLTYPE_INT | CTLFLAG_RW,
			    dev, i, sysctl_acpi_sony_gen_handler, "I",
			    acpi_sony_oids[i].comment);
		} else {
			SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
			    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
			    i, acpi_sony_oids[i].nodename ,
			    CTLTYPE_INT | CTLFLAG_RD,
			    dev, i, sysctl_acpi_sony_gen_handler, "I",
			    acpi_sony_oids[i].comment);
		}
	}
	return (0);
}

static void
initialize_tempmon(struct imx6_anatop_softc *sc)
{
	uint32_t cal;
	struct sysctl_ctx_list *ctx;

	/*
	 * Fetch calibration data: a sensor count at room temperature (25C),
	 * a sensor count at a high temperature, and that temperature
	 */
	cal = fsl_ocotp_read_4(FSL_OCOTP_ANA1);
	sc->temp_room_cnt = (cal & 0xFFF00000) >> 20;
	sc->temp_high_cnt = (cal & 0x000FFF00) >> 8;
	sc->temp_high_val = (cal & 0x000000FF) * 10;

	/*
	 * Throttle to a lower cpu freq at 10C below the "hot" temperature, and
	 * reset back to max cpu freq at 5C below the trigger.
	 */
	sc->temp_throttle_val = sc->temp_high_val - 100;
	sc->temp_throttle_trigger_cnt =
	    temp_to_count(sc, sc->temp_throttle_val);
	sc->temp_throttle_reset_cnt = 
	    temp_to_count(sc, sc->temp_throttle_val - 50);

	/*
	 * Set the sensor to sample automatically at 16Hz (32.768KHz/0x800), set
	 * the throttle count, and begin making measurements.
	 */
	imx6_anatop_write_4(IMX6_ANALOG_TEMPMON_TEMPSENSE1, 0x0800);
	imx6_anatop_write_4(IMX6_ANALOG_TEMPMON_TEMPSENSE0,
	    (sc->temp_throttle_trigger_cnt << 
	    IMX6_ANALOG_TEMPMON_TEMPSENSE0_ALARM_SHIFT) |
	    IMX6_ANALOG_TEMPMON_TEMPSENSE0_MEASURE);

	/*
	 * XXX Note that the alarm-interrupt feature isn't working yet, so
	 * we'll use a callout handler to check at 10Hz.  Make sure we have an
	 * initial temperature reading before starting up the callouts so we
	 * don't get a bogus reading of zero.
	 */
	while (sc->temp_last_cnt == 0)
		temp_update_count(sc);
	sc->temp_throttle_delay = 100 * SBT_1MS;
	callout_init(&sc->temp_throttle_callout, 0);
	callout_reset_sbt(&sc->temp_throttle_callout, sc->temp_throttle_delay, 
	    0, tempmon_throttle_check, sc, 0);

	ctx = device_get_sysctl_ctx(sc->dev);
	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
	    OID_AUTO, "temperature", CTLTYPE_INT | CTLFLAG_RD, sc, 0,
	    temp_sysctl_handler, "IK", "Current die temperature");
	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
	    OID_AUTO, "throttle_temperature", CTLTYPE_INT | CTLFLAG_RW, sc,
	    0, temp_throttle_sysctl_handler, "IK", 
	    "Throttle CPU when exceeding this temperature");
}

static int
ow_temp_attach(device_t dev)
{
	struct ow_temp_softc *sc;

	sc = device_get_softc(dev);
	sc->dev = dev;
	sc->type = ow_get_family(dev);
	SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
	    OID_AUTO, "temperature", CTLFLAG_RD | CTLTYPE_INT,
	    &sc->temp, 0, sysctl_handle_int,
	    "IK3", "Current Temperature");
	SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
	    OID_AUTO, "badcrc", CTLFLAG_RD,
	    &sc->bad_crc, 0,
	    "Number of Bad CRC on reading scratchpad");
	SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
	    OID_AUTO, "badread", CTLFLAG_RD,
	    &sc->bad_reads, 0,
	    "Number of errors on reading scratchpad");
	SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
	    OID_AUTO, "reading_interval", CTLFLAG_RW,
	    &sc->reading_interval, 0,
	    "ticks between reads");
	SYSCTL_ADD_INT(device_get_sysctl_ctx(dev),
	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
	    OID_AUTO, "parasite", CTLFLAG_RW,
	    &sc->parasite, 0,
	    "In Parasite mode");
	/*
	 * Just do this for unit 0 to avoid locking
	 * the ow bus until that code can be put
	 * into place.
	 */
	sc->temp = -1;
	sc->reading_interval = 10 * hz;
	mtx_init(&sc->temp_lock, "lock for doing temperature", NULL, MTX_DEF);
	/* Start the thread */
	if (kproc_create(ow_temp_event_thread, sc, &sc->event_thread, 0, 0,
	    "%s event thread", device_get_nameunit(dev))) {
		device_printf(dev, "unable to create event thread.\n");
		panic("cbb_create_event_thread");
	}

	return 0;
}

static int
aw_sid_attach(device_t dev)
{
	struct aw_sid_softc *sc;

	sc = device_get_softc(dev);

	if (bus_alloc_resources(dev, aw_sid_spec, &sc->res) != 0) {
		device_printf(dev, "cannot allocate resources for device\n");
		return (ENXIO);
	}

	aw_sid_sc = sc;

	sc->type = ofw_bus_search_compatible(dev, compat_data)->ocd_data;
	switch (sc->type) {
	case A83T_SID:
		sc->root_key_off = A83T_ROOT_KEY_OFF;
		break;
	default:
		sc->root_key_off = A10_ROOT_KEY_OFF;
		break;
	}

	SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
	    OID_AUTO, "rootkey",
	    CTLTYPE_STRING | CTLFLAG_RD,
	    dev, AW_SID_ROOT_KEY, aw_sid_sysctl, "A", "Root Key");

	return (0);
}

static void
bcm_bsc_sysctl_init(struct bcm_bsc_softc *sc)
{
    struct sysctl_ctx_list *ctx;
    struct sysctl_oid *tree_node;
    struct sysctl_oid_list *tree;

    /*
     * Add system sysctl tree/handlers.
     */
    ctx = device_get_sysctl_ctx(sc->sc_dev);
    tree_node = device_get_sysctl_tree(sc->sc_dev);
    tree = SYSCTL_CHILDREN(tree_node);
    SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "frequency",
                    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
                    bcm_bsc_clock_proc, "IU", "I2C BUS clock frequency");
    SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "clock_stretch",
                    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
                    bcm_bsc_clkt_proc, "IU", "I2C BUS clock stretch timeout");
    SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "fall_edge_delay",
                    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
                    bcm_bsc_fall_proc, "IU", "I2C BUS falling edge delay");
    SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "rise_edge_delay",
                    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
                    bcm_bsc_rise_proc, "IU", "I2C BUS rising edge delay");
}

static int
aw_ts_attach(device_t dev)
{
	struct aw_ts_softc *sc;

	sc = device_get_softc(dev);
	sc->dev = dev;

	if (bus_alloc_resources(dev, aw_ts_spec, sc->res) != 0) {
		device_printf(dev, "could not allocate memory resource\n");
		return (ENXIO);
	}

	if (bus_setup_intr(dev, sc->res[1],
	    INTR_TYPE_MISC | INTR_MPSAFE, NULL, aw_ts_intr, sc,
	    &sc->intrhand)) {
		bus_release_resources(dev, aw_ts_spec, sc->res);
		device_printf(dev, "cannot setup interrupt handler\n");
		return (ENXIO);
	}

	/*
	 * Thoses magic values were taken from linux which take them from
	 * the allwinner SDK or found them by deduction
	 */
	switch (ofw_bus_search_compatible(dev, compat_data)->ocd_data) {
	case A10_TS:
		sc->temp_offset = 257000;
		sc->temp_step = 133;
		break;
	case A13_TS:
		sc->temp_offset = 144700;
		sc->temp_step = 100;
		break;
	}

	/* Enable clock and set divisers */
	WRITE(sc, TP_CTRL0, TP_CTRL0_CLK_SELECT(0) |
	  TP_CTRL0_CLK_DIV(2) |
	  TP_CTRL0_FS_DIV(7) |
	  TP_CTRL0_TACQ(63));

	/* Enable TS module */
	WRITE(sc, TP_CTRL1, TP_CTRL1_MODE_EN);

	/* Enable Temperature, period is ~2s */
	WRITE(sc, TP_TPR, TP_TPR_TEMP_EN | TP_TPR_TEMP_PERIOD(1953));

	/* Enable temp irq */
	WRITE(sc, TP_FIFOC, TP_FIFOC_TEMP_IRQ_ENABLE);

	/* Add sysctl */
	SYSCTL_ADD_PROC(device_get_sysctl_ctx(dev),
	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
	    OID_AUTO, "temperature", CTLTYPE_INT | CTLFLAG_RD,
	    &sc->temp_data, 0, sysctl_handle_int,
	    "IK3", "CPU Temperature");

	return (0);
}

static void
r21a_attach_private(struct rtwn_softc *sc)
{
	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
	struct r12a_softc *rs;

	rs = malloc(sizeof(struct r12a_softc), M_RTWN_PRIV, M_WAITOK | M_ZERO);

	rs->rs_flags			= R12A_RXCKSUM_EN | R12A_RXCKSUM6_EN;

	rs->rs_radar = 0;
	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "radar_detection", CTLFLAG_RDTUN, &rs->rs_radar,
	    rs->rs_radar, "Enable radar detection (untested)");

	rs->rs_fix_spur			= rtwn_nop_softc_chan;
	rs->rs_set_band_2ghz		= r21a_set_band_2ghz;
	rs->rs_set_band_5ghz		= r21a_set_band_5ghz;
	rs->rs_init_burstlen		= r21au_init_burstlen;
	rs->rs_init_ampdu_fwhw		= r21a_init_ampdu_fwhw;
	rs->rs_crystalcap_write		= r21a_crystalcap_write;
#ifndef RTWN_WITHOUT_UCODE
	rs->rs_iq_calib_fw_supported	= r21a_iq_calib_fw_supported;
#endif
	rs->rs_iq_calib_sw		= r21a_iq_calib_sw;

	rs->ampdu_max_time		= 0x5e;

	rs->ac_usb_dma_size		= 0x01;
	rs->ac_usb_dma_time		= 0x10;

	sc->sc_priv			= rs;
}

static void
bcm_spi_sysctl_init(struct bcm_spi_softc *sc)
{
	struct sysctl_ctx_list *ctx;
	struct sysctl_oid *tree_node;
	struct sysctl_oid_list *tree;

	/*
	 * Add system sysctl tree/handlers.
	 */
	ctx = device_get_sysctl_ctx(sc->sc_dev);
	tree_node = device_get_sysctl_tree(sc->sc_dev);
	tree = SYSCTL_CHILDREN(tree_node);
	SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "clock",
	    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
	    bcm_spi_clock_proc, "IU", "SPI BUS clock frequency");
	SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "cpol",
	    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
	    bcm_spi_cpol_proc, "IU", "SPI BUS clock polarity");
	SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "cpha",
	    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
	    bcm_spi_cpha_proc, "IU", "SPI BUS clock phase");
	SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "cspol0",
	    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
	    bcm_spi_cspol0_proc, "IU", "SPI BUS chip select 0 polarity");
	SYSCTL_ADD_PROC(ctx, tree, OID_AUTO, "cspol1",
	    CTLFLAG_RW | CTLTYPE_UINT, sc, sizeof(*sc),
	    bcm_spi_cspol1_proc, "IU", "SPI BUS chip select 1 polarity");
}

static int
nvbl_attach(device_t dev)
{
	struct nvbl_softc	*sc;
	struct sysctl_ctx_list *ctx;
	struct sysctl_oid *tree;
	int			 rid;

	sc = device_get_softc(dev);

	rid = 0x10;	/* BAR[0], for the MMIO register */
	sc->sc_memr = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
			RF_ACTIVE | RF_SHAREABLE);
	if (sc->sc_memr == NULL) {
		device_printf(dev, "Could not alloc mem resource!\n");
		return (ENXIO);
	}

	/* Turn on big-endian mode */
	if (!(bus_read_stream_4(sc->sc_memr, NVIDIA_MMIO_PMC + 4) & 0x01000001)) {
		bus_write_stream_4(sc->sc_memr, NVIDIA_MMIO_PMC + 4, 0x01000001);
		mb();
	}

	ctx = device_get_sysctl_ctx(dev);
	tree = device_get_sysctl_tree(dev);

	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
			"level", CTLTYPE_INT | CTLFLAG_RW, sc, 0,
			nvbl_sysctl, "I", "Backlight level (0-100)");

	return (0);
}

void
iicbus_init_frequency(device_t dev, u_int bus_freq)
{
	struct iicbus_softc *sc = IICBUS_SOFTC(dev);

	/*
	 * If a bus frequency value was passed in, use it.  Otherwise initialize
	 * it first to the standard i2c 100KHz frequency, then override that
	 * from a hint if one exists.
	 */
	if (bus_freq > 0)
		sc->bus_freq = bus_freq;
	else {
		sc->bus_freq = 100000;
		resource_int_value(device_get_name(dev), device_get_unit(dev),
		    "frequency", (int *)&sc->bus_freq);
	}
	/*
	 * Set up the sysctl that allows the bus frequency to be changed.
	 * It is flagged as a tunable so that the user can set the value in
	 * loader(8), and that will override any other setting from any source.
	 * The sysctl tunable/value is the one most directly controlled by the
	 * user and thus the one that always takes precedence.
	 */
	SYSCTL_ADD_UINT(device_get_sysctl_ctx(dev),
	    SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
	    OID_AUTO, "frequency", CTLFLAG_RW | CTLFLAG_TUN, &sc->bus_freq,
	    sc->bus_freq, "Bus frequency in Hz");
}

/*
 * This doesn't necessarily belong here (because it's HAL related, not
 * driver related).
 */
void
ath_sysctl_hal_attach(struct ath_softc *sc)
{
	struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev);
	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev);
	struct sysctl_oid_list *child = SYSCTL_CHILDREN(tree);

	tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "hal", CTLFLAG_RD,
	    NULL, "Atheros HAL parameters");
	child = SYSCTL_CHILDREN(tree);

	sc->sc_ah->ah_config.ah_debug = 0;
	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "debug", CTLFLAG_RW,
	    &sc->sc_ah->ah_config.ah_debug, 0, "Atheros HAL debugging printfs");

	sc->sc_ah->ah_config.ah_ar5416_biasadj = 0;
	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "ar5416_biasadj", CTLFLAG_RW,
	    &sc->sc_ah->ah_config.ah_ar5416_biasadj, 0,
	    "Enable 2GHz AR5416 direction sensitivity bias adjust");

	sc->sc_ah->ah_config.ah_dma_beacon_response_time = 2;
	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "dma_brt", CTLFLAG_RW,
	    &sc->sc_ah->ah_config.ah_dma_beacon_response_time, 0,
	    "Atheros HAL DMA beacon response time");

	sc->sc_ah->ah_config.ah_sw_beacon_response_time = 10;
	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "sw_brt", CTLFLAG_RW,
	    &sc->sc_ah->ah_config.ah_sw_beacon_response_time, 0,
	    "Atheros HAL software beacon response time");

	sc->sc_ah->ah_config.ah_additional_swba_backoff = 0;
	SYSCTL_ADD_INT(ctx, child, OID_AUTO, "swba_backoff", CTLFLAG_RW,
	    &sc->sc_ah->ah_config.ah_additional_swba_backoff, 0,
	    "Atheros HAL additional SWBA backoff time");
}

static int
tegra124_coretemp_attach(device_t dev)
{
	struct tegra124_coretemp_softc *sc;
	device_t pdev;
	struct sysctl_oid *oid;
	struct sysctl_ctx_list *ctx;
	int rv;

	sc = device_get_softc(dev);
	sc->dev = dev;
	sc->cpu_id = device_get_unit(dev);
	sc->core_max_temp = 102000;
	pdev = device_get_parent(dev);

	rv = tegra124_coretemp_ofw_parse(sc);
	if (rv != 0)
		return (rv);

	ctx = device_get_sysctl_ctx(dev);

	oid = SYSCTL_ADD_NODE(ctx,
	    SYSCTL_CHILDREN(device_get_sysctl_tree(pdev)), OID_AUTO,
	    "coretemp", CTLFLAG_RD, NULL, "Per-CPU thermal information");

	/*
	 * Add the MIBs to dev.cpu.N and dev.cpu.N.coretemp.
	 */
	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(pdev)),
	    OID_AUTO, "temperature", CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE,
	    dev, CORETEMP_TEMP, coretemp_get_val_sysctl, "IK",
	    "Current temperature");
	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "delta",
	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, dev, CORETEMP_DELTA,
	    coretemp_get_val_sysctl, "I",
	    "Delta between TCC activation and current temperature");
	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "resolution",
	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, dev, CORETEMP_RESOLUTION,
	    coretemp_get_val_sysctl, "I",
	    "Resolution of CPU thermal sensor");
	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(oid), OID_AUTO, "tjmax",
	    CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, dev, CORETEMP_TJMAX,
	    coretemp_get_val_sysctl, "IK",
	    "TCC activation temperature");

	return (0);
}

static int
uhso_attach_ifnet(struct uhso_softc *sc, struct usb_interface *iface, int type)
{
	struct ifnet *ifp;
	usb_error_t uerr;
	struct sysctl_ctx_list *sctx;
	struct sysctl_oid *soid;
	unsigned int devunit;

	uerr = usbd_transfer_setup(sc->sc_udev,
	    &iface->idesc->bInterfaceNumber, sc->sc_if_xfer,
	    uhso_ifnet_config, UHSO_IFNET_MAX, sc, &sc->sc_mtx);
	if (uerr) {
		UHSO_DPRINTF(0, "usbd_transfer_setup failed: %s\n",
		    usbd_errstr(uerr));
		return (-1);
	}

	sc->sc_ifp = ifp = if_alloc(IFT_OTHER);
	if (sc->sc_ifp == NULL) {
		device_printf(sc->sc_dev, "if_alloc() failed\n");
		return (-1);
	}

	callout_init_mtx(&sc->sc_c, &sc->sc_mtx, 0);
	mtx_lock(&sc->sc_mtx);
	callout_reset(&sc->sc_c, 1, uhso_if_rxflush, sc);
	mtx_unlock(&sc->sc_mtx);

	/*
	 * We create our own unit numbers for ifnet devices because the
	 * USB interface unit numbers can be at arbitrary positions yielding
	 * odd looking device names.
	 */
	devunit = alloc_unr(uhso_ifnet_unit);

	if_initname(ifp, device_get_name(sc->sc_dev), devunit);
	ifp->if_mtu = UHSO_MAX_MTU;
	ifp->if_ioctl = uhso_if_ioctl;
	ifp->if_init = uhso_if_init;
	ifp->if_start = uhso_if_start;
	ifp->if_output = uhso_if_output;
	ifp->if_flags = IFF_BROADCAST | IFF_MULTICAST | IFF_NOARP;
	ifp->if_softc = sc;
	IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen);
	ifp->if_snd.ifq_drv_maxlen = ifqmaxlen;
	IFQ_SET_READY(&ifp->if_snd);

	if_attach(ifp);
	bpfattach(ifp, DLT_RAW, 0);

	sctx = device_get_sysctl_ctx(sc->sc_dev);
	soid = device_get_sysctl_tree(sc->sc_dev);
	/* Unlocked read... */
	SYSCTL_ADD_STRING(sctx, SYSCTL_CHILDREN(soid), OID_AUTO, "netif",
	    CTLFLAG_RD, ifp->if_xname, 0, "Attached network interface");

	return (0);
}