C++ device_detach函数代码示例

static int
a10_ehci_detach(device_t self)
{
	ehci_softc_t *sc = device_get_softc(self);
	device_t bdev;
	int err;
	uint32_t reg_value = 0;

	if (sc->sc_bus.bdev) {
		bdev = sc->sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(self, bdev);
	}
	/* during module unload there are lots of children leftover */
	device_delete_children(self);

	if (sc->sc_irq_res && sc->sc_intr_hdl) {
		/*
		 * only call ehci_detach() after ehci_init()
		 */
		ehci_detach(sc);

		err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);

		if (err)
			/* XXX or should we panic? */
			device_printf(self, "Could not tear down irq, %d\n",
			    err);
		sc->sc_intr_hdl = NULL;
	}

	if (sc->sc_irq_res) {
		bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
		sc->sc_irq_res = NULL;
	}
	if (sc->sc_io_res) {
		bus_release_resource(self, SYS_RES_MEMORY, 0,
		    sc->sc_io_res);
		sc->sc_io_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);

	/* Disable configure port */
	reg_value = A10_READ_4(sc, SW_SDRAM_REG_HPCR_USB2);
	reg_value &= ~SW_SDRAM_BP_HPCR_ACCESS;
	A10_WRITE_4(sc, SW_SDRAM_REG_HPCR_USB2, reg_value);

	/* Disable passby */
	reg_value = A10_READ_4(sc, SW_USB_PMU_IRQ_ENABLE);
	reg_value &= ~SW_AHB_INCR8; /* AHB INCR8 disable */
	reg_value &= ~SW_AHB_INCR4; /* AHB burst type INCR4 disable */
	reg_value &= ~SW_AHB_INCRX_ALIGN; /* AHB INCRX align disable */
	reg_value &= ~SW_ULPI_BYPASS; /* ULPI bypass disable */
	A10_WRITE_4(sc, SW_USB_PMU_IRQ_ENABLE, reg_value);

	/* Disable clock for USB */
	a10_clk_usb_deactivate();

	return (0);
}

static int
octusb_octeon_detach(device_t dev)
{
	struct octusb_octeon_softc *sc = device_get_softc(dev);
	device_t bdev;
	int err;

	if (sc->sc_dci.sc_bus.bdev) {
		bdev = sc->sc_dci.sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(dev, bdev);
	}
	/* during module unload there are lots of children leftover */
	device_delete_children(dev);

	if (sc->sc_dci.sc_irq_res && sc->sc_dci.sc_intr_hdl) {
		/*
		 * only call octusb_octeon_uninit() after octusb_octeon_init()
		 */
		octusb_uninit(&sc->sc_dci);

		err = bus_teardown_intr(dev, sc->sc_dci.sc_irq_res,
		    sc->sc_dci.sc_intr_hdl);
		sc->sc_dci.sc_intr_hdl = NULL;
	}
	if (sc->sc_dci.sc_irq_res) {
		bus_release_resource(dev, SYS_RES_IRQ, 0,
		    sc->sc_dci.sc_irq_res);
		sc->sc_dci.sc_irq_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_dci.sc_bus, NULL);

	return (0);
}

static int
zy7_ehci_detach(device_t dev)
{
	ehci_softc_t *sc = device_get_softc(dev);

	sc->sc_flags &= ~EHCI_SCFLG_DONEINIT;

	if (device_is_attached(dev))
		bus_generic_detach(dev);

	if (sc->sc_irq_res && sc->sc_intr_hdl)
		/* call ehci_detach() after ehci_init() called after
		 * successful bus_setup_intr().
		 */
		ehci_detach(sc);
	if (sc->sc_bus.bdev) {
		device_detach(sc->sc_bus.bdev);
		device_delete_child(dev, sc->sc_bus.bdev);
	}
	if (sc->sc_irq_res) {
		if (sc->sc_intr_hdl != NULL)
			bus_teardown_intr(dev, sc->sc_irq_res,
					  sc->sc_intr_hdl);
		bus_release_resource(dev, SYS_RES_IRQ,
			     rman_get_rid(sc->sc_irq_res), sc->sc_irq_res);
	}

	if (sc->sc_io_res)
		bus_release_resource(dev, SYS_RES_MEMORY,
			     rman_get_rid(sc->sc_io_res), sc->sc_io_res);
	usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);

	return (0);
}

static ACPI_STATUS
acpi_dock_eject_child(ACPI_HANDLE handle, UINT32 level, void *context,
    void **status)
{
	device_t	dock_dev, dev;
	ACPI_HANDLE	dock_handle;

	dock_dev = *(device_t *)context;
	dock_handle = acpi_get_handle(dock_dev);

	if (!acpi_dock_is_ejd_device(dock_handle, handle))
		goto out;

	ACPI_VPRINT(dock_dev, acpi_device_get_parent_softc(dock_dev),
	    "ejecting device for %s\n", acpi_name(handle));

	dev = acpi_get_device(handle);
	if (dev != NULL && device_is_attached(dev)) {
		mtx_lock(&Giant);
		device_detach(dev);
		mtx_unlock(&Giant);
	}

	acpi_SetInteger(handle, "_EJ0", 0);
out:
	return (AE_OK);
}

static int
at91_udp_detach(device_t dev)
{
	struct at91_udp_softc *sc = device_get_softc(dev);
	device_t bdev;
	int err;

	if (sc->sc_dci.sc_bus.bdev) {
		bdev = sc->sc_dci.sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(dev, bdev);
	}
	/* during module unload there are lots of children leftover */
	device_delete_children(dev);

	USB_BUS_LOCK(&sc->sc_dci.sc_bus);
	callout_stop(&sc->sc_vbus);
	USB_BUS_UNLOCK(&sc->sc_dci.sc_bus);

	callout_drain(&sc->sc_vbus);

	/* disable Transceiver */
	AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_TXVC, AT91_UDP_TXVC_DIS);

	/* disable and clear all interrupts */
	AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_IDR, 0xFFFFFFFF);
	AT91_UDP_WRITE_4(&sc->sc_dci, AT91_UDP_ICR, 0xFFFFFFFF);

	if (sc->sc_dci.sc_irq_res && sc->sc_dci.sc_intr_hdl) {
		/*
		 * only call at91_udp_uninit() after at91_udp_init()
		 */
		at91dci_uninit(&sc->sc_dci);

		err = bus_teardown_intr(dev, sc->sc_dci.sc_irq_res,
		    sc->sc_dci.sc_intr_hdl);
		sc->sc_dci.sc_intr_hdl = NULL;
	}
	if (sc->sc_dci.sc_irq_res) {
		bus_release_resource(dev, SYS_RES_IRQ, 0,
		    sc->sc_dci.sc_irq_res);
		sc->sc_dci.sc_irq_res = NULL;
	}
	if (sc->sc_dci.sc_io_res) {
		bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID,
		    sc->sc_dci.sc_io_res);
		sc->sc_dci.sc_io_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_dci.sc_bus, NULL);

	/* disable clocks */
	at91_pmc_clock_disable(sc->sc_iclk);
	at91_pmc_clock_disable(sc->sc_fclk);
	at91_pmc_clock_disable(sc->sc_mclk);
	at91_pmc_clock_deref(sc->sc_fclk);
	at91_pmc_clock_deref(sc->sc_iclk);
	at91_pmc_clock_deref(sc->sc_mclk);

	return (0);
}

static int
exynos_xhci_detach(device_t dev)
{
	struct exynos_xhci_softc *esc = device_get_softc(dev);
	device_t bdev;
	int err;

	if (esc->base.sc_bus.bdev != NULL) {
		bdev = esc->base.sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(dev, bdev);
	}
	/* During module unload there are lots of children leftover */
	device_delete_children(dev);

	xhci_halt_controller(&esc->base);
	
	if (esc->res[2] && esc->base.sc_intr_hdl) {
		err = bus_teardown_intr(dev, esc->res[2],
		    esc->base.sc_intr_hdl);
		if (err) {
			device_printf(dev, "Could not tear down IRQ,"
			    " %d\n", err);
			return (err);
		}
	}

	bus_release_resources(dev, exynos_xhci_spec, esc->res);

	xhci_uninit(&esc->base);
	
	return (0);
}

static int
ohci_atmelarm_detach(device_t dev)
{
	struct at91_ohci_softc *sc = device_get_softc(dev);
	device_t bdev;
	int err;

	if (sc->sc_ohci.sc_bus.bdev) {
		bdev = sc->sc_ohci.sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(dev, bdev);
	}
	/* during module unload there are lots of children leftover */
	device_delete_children(dev);

	/*
	 * Put the controller into reset, then disable clocks and do
	 * the MI tear down.  We have to disable the clocks/hardware
	 * after we do the rest of the teardown.  We also disable the
	 * clocks in the opposite order we acquire them, but that
	 * doesn't seem to be absolutely necessary.  We free up the
	 * clocks after we disable them, so the system could, in
	 * theory, reuse them.
	 */
	bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
	    OHCI_CONTROL, 0);

	at91_pmc_clock_disable(sc->fclk);
	at91_pmc_clock_disable(sc->iclk);
	at91_pmc_clock_disable(sc->mclk);
	at91_pmc_clock_deref(sc->fclk);
	at91_pmc_clock_deref(sc->iclk);
	at91_pmc_clock_deref(sc->mclk);

	if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) {
		/*
		 * only call ohci_detach() after ohci_init()
		 */
		ohci_detach(&sc->sc_ohci);

		err = bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res, sc->sc_ohci.sc_intr_hdl);
		sc->sc_ohci.sc_intr_hdl = NULL;
	}
	if (sc->sc_ohci.sc_irq_res) {
		bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_ohci.sc_irq_res);
		sc->sc_ohci.sc_irq_res = NULL;
	}
	if (sc->sc_ohci.sc_io_res) {
		bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID,
		    sc->sc_ohci.sc_io_res);
		sc->sc_ohci.sc_io_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc);

	return (0);
}

void device_free(Device *d) {
        assert(d);

        device_detach(d);

        hashmap_remove(d->manager->devices, d->sysfs);

        free(d->sysfs);
        free(d);
}

int
uhci_pci_detach(device_t self)
{
	uhci_softc_t *sc = device_get_softc(self);
	device_t bdev;

	if (sc->sc_bus.bdev) {
		bdev = sc->sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(self, bdev);
	}
	/* during module unload there are lots of children leftover */
	device_delete_children(self);

	/*
	 * disable interrupts that might have been switched on in
	 * uhci_init.
	 */
	if (sc->sc_io_res) {
		USB_BUS_LOCK(&sc->sc_bus);

		/* stop the controller */
		uhci_reset(sc);

		USB_BUS_UNLOCK(&sc->sc_bus);
	}
	pci_disable_busmaster(self);

	if (sc->sc_irq_res && sc->sc_intr_hdl) {
		int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);

		if (err) {
			/* XXX or should we panic? */
			device_printf(self, "Could not tear down irq, %d\n",
			    err);
		}
		sc->sc_intr_hdl = NULL;
	}
	if (sc->sc_irq_res) {
		bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
		sc->sc_irq_res = NULL;
	}
	if (sc->sc_io_res) {
		bus_release_resource(self, SYS_RES_IOPORT, PCI_UHCI_BASE_REG,
		    sc->sc_io_res);
		sc->sc_io_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_bus, &uhci_iterate_hw_softc);

	return (0);
}

static int
musbotg_detach(device_t dev)
{
	struct musbotg_super_softc *sc = device_get_softc(dev);
	device_t bdev;
	int err;
	int i;

	for (i = 0; i < AM335X_USB_PORTS; i++) {
		if (sc->sc_otg[i].sc_bus.bdev) {
			bdev = sc->sc_otg[i].sc_bus.bdev;
			device_detach(bdev);
			device_delete_child(dev, bdev);
		}

		if (sc->sc_otg[i].sc_irq_res && sc->sc_otg[i].sc_intr_hdl) {
			/*
			 * only call musbotg_uninit() after musbotg_init()
			 */
			musbotg_uninit(&sc->sc_otg[i]);

			err = bus_teardown_intr(dev, sc->sc_otg[i].sc_irq_res,
			    sc->sc_otg[i].sc_intr_hdl);
			sc->sc_otg[i].sc_intr_hdl = NULL;
		}

		usb_bus_mem_free_all(&sc->sc_otg[i].sc_bus, NULL);
	}

	if (sc->sc_intr_hdl) {
	 	bus_teardown_intr(dev, sc->sc_irq_res[0],
		    sc->sc_intr_hdl);
		sc->sc_intr_hdl = NULL;
	}


	/* Free resources if any */
	if (sc->sc_mem_res[0])
		bus_release_resources(dev, am335x_musbotg_mem_spec,
		    sc->sc_mem_res);

	if (sc->sc_irq_res[0])
		bus_release_resources(dev, am335x_musbotg_irq_spec,
		    sc->sc_irq_res);

	/* during module unload there are lots of children leftover */
	device_delete_children(dev);

	return (0);
}

static int
ehci_obio_detach(device_t self)
{
	ehci_softc_t *sc = device_get_softc(self);
	device_t bdev;
	int err;

	if (sc->sc_bus.bdev) {
		bdev = sc->sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(self, bdev);
	}
	/* during module unload there are lots of children leftover */
	device_delete_children(self);

	if (sc->sc_irq_res && sc->sc_intr_hdl) {
		/*
		 * only call ehci_detach() after ehci_init()
		 */
		ehci_detach(sc);

		/* Stop EHCI clock */
		rt305x_sysctl_set(SYSCTL_CLKCFG1, 
		  rt305x_sysctl_get(SYSCTL_CLKCFG1) & 
		  ~(SYSCTL_CLKCFG1_UPHY0_CLK_EN
#ifdef MT7620
		    | SYSCTL_CLKCFG1_UPHY1_CLK_EN
#endif
		));

		err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
		if (err)
			device_printf(self, "Could not tear down irq, %d\n",
				err);
		sc->sc_intr_hdl = NULL;
	}
	if (sc->sc_irq_res) {
		bus_release_resource(self, SYS_RES_IRQ, 0,
		    sc->sc_irq_res);
		sc->sc_irq_res = NULL;
	}
	if (sc->sc_io_res) {
		bus_release_resource(self, SYS_RES_MEMORY, 0,
		    sc->sc_io_res);
		sc->sc_io_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);

	return (0);
}

void device_attach(Device *d, Seat *s) {
        assert(d);
        assert(s);

        if (d->seat == s)
                return;

        if (d->seat)
                device_detach(d);

        d->seat = s;
        LIST_PREPEND(Device, devices, s->devices, d);

        seat_send_changed(s, "CanGraphical\0");
}

int
puc_bfe_detach(device_t dev)
{
	struct puc_bar *bar;
	struct puc_port *port;
	struct puc_softc *sc;
	int error, idx;

	sc = device_get_softc(dev);

	/* Detach our children. */
	error = 0;
	for (idx = 0; idx < sc->sc_nports; idx++) {
		port = &sc->sc_port[idx];
		if (port->p_dev == NULL)
			continue;
		if (device_detach(port->p_dev) == 0) {
			device_delete_child(dev, port->p_dev);
			if (port->p_rres != NULL)
				rman_release_resource(port->p_rres);
			if (port->p_ires != NULL)
				rman_release_resource(port->p_ires);
		} else
			error = ENXIO;
	}
	if (error)
		return (error);

	if (sc->sc_serdevs != 0UL)
		bus_teardown_intr(dev, sc->sc_ires, sc->sc_icookie);
	bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irid, sc->sc_ires);

	for (idx = 0; idx < PUC_PCI_BARS; idx++) {
		bar = &sc->sc_bar[idx];
		if (bar->b_res != NULL)
			bus_release_resource(sc->sc_dev, bar->b_type,
			    bar->b_rid, bar->b_res);
	}

	rman_fini(&sc->sc_irq);
	free(__DECONST(void *, sc->sc_irq.rm_descr), M_PUC);
	rman_fini(&sc->sc_iomem);
	free(__DECONST(void *, sc->sc_iomem.rm_descr), M_PUC);
	rman_fini(&sc->sc_ioport);
	free(__DECONST(void *, sc->sc_ioport.rm_descr), M_PUC);
	free(sc->sc_port, M_PUC);
	return (0);
}

static int
ar71xx_ehci_detach(device_t self)
{
	struct ar71xx_ehci_softc *isc = device_get_softc(self);
	ehci_softc_t *sc = &isc->base;
	device_t bdev;
	int err;

 	if (sc->sc_bus.bdev) {
		bdev = sc->sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(self, bdev);
	}
	/* during module unload there are lots of children leftover */
	device_delete_children(self);

 	if (sc->sc_irq_res && sc->sc_intr_hdl) {
		/*
		 * only call ehci_detach() after ehci_init()
		 */
		ehci_detach(sc);

		err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);

		if (err)
			/* XXX or should we panic? */
			device_printf(self, "Could not tear down irq, %d\n",
			    err);
		sc->sc_intr_hdl = NULL;
	}

 	if (sc->sc_irq_res) {
		bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
		sc->sc_irq_res = NULL;
	}
	if (sc->sc_io_res) {
		bus_release_resource(self, SYS_RES_MEMORY, 0,
		    sc->sc_io_res);
		sc->sc_io_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);

	return (0);
}

static int
dotg_obio_detach(device_t dev)
{
	struct dotg_obio_softc *sc = device_get_softc(dev);
	device_t bdev;
	int err;

	if (sc->sc_dci.sc_bus.bdev) {
		bdev = sc->sc_dci.sc_bus.bdev;
		device_detach(bdev);
		device_delete_child(dev, bdev);
	}
	/* during module unload there are lots of children leftover */
	device_delete_children(dev);

	if (sc->sc_dci.sc_irq_res && sc->sc_dci.sc_intr_hdl) {
		/*
		 * only call dotg_obio_uninit() after dotg_obio_init()
		 */
		dotg_uninit(&sc->sc_dci);

		/* Stop OTG clock */
		rt305x_sysctl_set(SYSCTL_CLKCFG1, 
		    rt305x_sysctl_get(SYSCTL_CLKCFG1) & 
		    ~SYSCTL_CLKCFG1_OTG_CLK_EN);

		err = bus_teardown_intr(dev, sc->sc_dci.sc_irq_res,
		    sc->sc_dci.sc_intr_hdl);
		sc->sc_dci.sc_intr_hdl = NULL;
	}
	if (sc->sc_dci.sc_irq_res) {
		bus_release_resource(dev, SYS_RES_IRQ, 0,
		    sc->sc_dci.sc_irq_res);
		sc->sc_dci.sc_irq_res = NULL;
	}
	if (sc->sc_dci.sc_mem_res) {
		bus_release_resource(dev, SYS_RES_MEMORY, 0,
		    sc->sc_dci.sc_mem_res);
		sc->sc_dci.sc_mem_res = NULL;
	}
	usb_bus_mem_free_all(&sc->sc_dci.sc_bus, NULL);

	return (0);
}