7076389cec
This patch should remove the need for kldunload of USB controller drivers at suspend and kldload of USB controller drivers at resume. This patch also fixes some build issues in avr32dci.c MFC after: 2 weeks
254 lines
6.5 KiB
C
254 lines
6.5 KiB
C
/*-
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* Copyright (C) 2009 Yohanes Nugroho <yohanes@gmail.com>
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* based on ehci_mbus.c
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* Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
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* All rights reserved.
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*
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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. Neither the name of MARVELL nor the names of 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 AUTHOR 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 AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_bus.h"
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#include <machine/resource.h>
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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/rman.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/usb_core.h>
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#include <dev/usb/usb_busdma.h>
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#include <dev/usb/usb_process.h>
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#include <dev/usb/usb_util.h>
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#include <dev/usb/usb_controller.h>
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#include <dev/usb/usb_bus.h>
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#include <dev/usb/controller/ehci.h>
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#include <dev/usb/controller/ehcireg.h>
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static device_attach_t ehci_ebus_attach;
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static device_detach_t ehci_ebus_detach;
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static void *ih_err;
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#define EHCI_HC_DEVSTR "CNS11XX USB EHCI"
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#define USB_BRIDGE_INTR_MASK 0x214
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static int
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ehci_ebus_probe(device_t self)
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{
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device_set_desc(self, EHCI_HC_DEVSTR);
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return (BUS_PROBE_DEFAULT);
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}
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static int
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ehci_ebus_attach(device_t self)
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{
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ehci_softc_t *sc = device_get_softc(self);
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bus_space_handle_t bsh;
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int err;
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int rid;
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/* initialise some bus fields */
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sc->sc_bus.parent = self;
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sc->sc_bus.devices = sc->sc_devices;
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sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
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/* get all DMA memory */
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if (usb_bus_mem_alloc_all(&sc->sc_bus,
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USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
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return (ENOMEM);
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}
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sc->sc_bus.usbrev = USB_REV_2_0;
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rid = 0;
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sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY,
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&rid, RF_ACTIVE);
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if (!sc->sc_io_res) {
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device_printf(self, "Could not map memory\n");
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goto error;
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}
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sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
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bsh = rman_get_bushandle(sc->sc_io_res);
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/*magic, undocumented initialization*/
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bus_space_write_4((sc)->sc_io_tag, bsh, 0x04, 0x106);
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bus_space_write_4((sc)->sc_io_tag, bsh, 0x40, (3 << 5)|0x2000);
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DELAY(1000);
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sc->sc_io_size = 4096;
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if (bus_space_subregion(sc->sc_io_tag, bsh, 0x4000000,
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sc->sc_io_size, &sc->sc_io_hdl) != 0)
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panic("%s: unable to subregion USB host registers",
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device_get_name(self));
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rid = 0;
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sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
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RF_SHAREABLE | RF_ACTIVE);
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if (sc->sc_irq_res == NULL) {
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device_printf(self, "Could not allocate irq\n");
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ehci_ebus_detach(self);
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return (ENXIO);
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}
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sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
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if (!sc->sc_bus.bdev) {
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device_printf(self, "Could not add USB device\n");
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goto error;
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}
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device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
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device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
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sprintf(sc->sc_vendor, "Cavium");
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err = bus_setup_intr(self,sc->sc_irq_res,
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INTR_TYPE_BIO | INTR_MPSAFE, NULL,
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(driver_intr_t *)ehci_interrupt, sc,
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&sc->sc_intr_hdl);
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if (err) {
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device_printf(self, "Could not setup error irq, %d\n", err);
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ih_err = NULL;
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goto error;
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}
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err = ehci_init(sc);
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if (!err) {
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err = device_probe_and_attach(sc->sc_bus.bdev);
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}
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if (err) {
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device_printf(self, "USB init failed err=%d\n", err);
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goto error;
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}
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return (0);
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error:
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ehci_ebus_detach(self);
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return (ENXIO);
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}
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static int
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ehci_ebus_detach(device_t self)
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{
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ehci_softc_t *sc = device_get_softc(self);
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device_t bdev;
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int err;
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if (sc->sc_bus.bdev) {
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bdev = sc->sc_bus.bdev;
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device_detach(bdev);
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device_delete_child(self, bdev);
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}
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/* during module unload there are lots of children leftover */
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device_delete_children(self);
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/*
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* disable interrupts that might have been switched on in
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* ehci_ebus_attach()
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*/
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if (sc->sc_io_res) {
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EWRITE4(sc, USB_BRIDGE_INTR_MASK, 0);
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}
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if (sc->sc_irq_res && sc->sc_intr_hdl) {
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/*
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* only call ehci_detach() after ehci_init()
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*/
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ehci_detach(sc);
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err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
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if (err)
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/* XXX or should we panic? */
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device_printf(self, "Could not tear down irq, %d\n",
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err);
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sc->sc_intr_hdl = NULL;
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}
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if (sc->sc_irq_res) {
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bus_release_resource(self, SYS_RES_IRQ, 1, sc->sc_irq_res);
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sc->sc_irq_res = NULL;
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}
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if (sc->sc_io_res) {
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bus_release_resource(self, SYS_RES_MEMORY, 0,
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sc->sc_io_res);
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sc->sc_io_res = NULL;
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}
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usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
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return (0);
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}
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static device_method_t ehci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ehci_ebus_probe),
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DEVMETHOD(device_attach, ehci_ebus_attach),
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DEVMETHOD(device_detach, ehci_ebus_detach),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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static driver_t ehci_driver = {
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.name = "ehci",
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.methods = ehci_methods,
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.size = sizeof(ehci_softc_t),
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};
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static devclass_t ehci_devclass;
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DRIVER_MODULE(ehci, econaarm, ehci_driver, ehci_devclass, 0, 0);
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MODULE_DEPEND(ehci, usb, 1, 1, 1);
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