232 lines
6.0 KiB
C
232 lines
6.0 KiB
C
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/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2018 Ruslan Bukin <br@bsdpad.com>
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* All rights reserved.
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*
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* This software was developed by BAE Systems, the University of Cambridge
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* Computer Laboratory, and Memorial University under DARPA/AFRL contract
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* FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
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* (TC) research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE 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 <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/condvar.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#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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struct ehci_msm_softc {
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ehci_softc_t base;
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struct resource *res[3];
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};
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static struct resource_spec ehci_msm_spec[] = {
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{ SYS_RES_MEMORY, 0, RF_ACTIVE },
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{ SYS_RES_MEMORY, 1, RF_ACTIVE },
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{ SYS_RES_IRQ, 0, RF_ACTIVE },
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{ -1, 0 }
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};
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#define EHCI_HC_DEVSTR "Qualcomm USB 2.0 controller"
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static device_attach_t ehci_msm_attach;
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static device_detach_t ehci_msm_detach;
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static int
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ehci_msm_probe(device_t dev)
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{
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if (!ofw_bus_is_compatible(dev, "qcom,ci-hdrc"))
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return (ENXIO);
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device_set_desc(dev, 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_msm_attach(device_t dev)
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{
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struct ehci_msm_softc *esc;
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bus_space_handle_t bsh;
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ehci_softc_t *sc;
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int err;
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esc = device_get_softc(dev);
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sc = &esc->base;
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sc->sc_bus.parent = dev;
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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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sc->sc_bus.dma_bits = 32;
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if (bus_alloc_resources(dev, ehci_msm_spec, esc->res)) {
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device_printf(dev, "could not allocate resources\n");
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return (ENXIO);
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}
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sc->sc_io_tag = rman_get_bustag(esc->res[0]);
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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(dev), &ehci_iterate_hw_softc)) {
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return (ENOMEM);
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}
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/* EHCI registers */
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sc->sc_io_tag = rman_get_bustag(esc->res[0]);
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bsh = rman_get_bushandle(esc->res[0]);
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sc->sc_io_size = rman_get_size(esc->res[0]);
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if (bus_space_subregion(sc->sc_io_tag, bsh, 0x100,
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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(dev));
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sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
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if (!sc->sc_bus.bdev) {
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device_printf(dev, "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, "Qualcomm");
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err = bus_setup_intr(dev, esc->res[2], INTR_TYPE_BIO | INTR_MPSAFE,
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NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
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if (err) {
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device_printf(dev, "Could not setup irq, %d\n", err);
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sc->sc_intr_hdl = NULL;
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goto error;
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}
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sc->sc_flags |= EHCI_SCFLG_DONTRESET | EHCI_SCFLG_NORESTERM;
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err = ehci_init(sc);
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if (!err) {
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sc->sc_flags |= EHCI_SCFLG_DONEINIT;
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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(dev, "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_msm_detach(dev);
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return (ENXIO);
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}
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static int
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ehci_msm_detach(device_t dev)
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{
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ehci_softc_t *sc;
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device_t bdev;
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int err;
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sc = device_get_softc(dev);
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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(dev, bdev);
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}
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device_delete_children(dev);
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if (sc->sc_irq_res && sc->sc_intr_hdl) {
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/* only call ehci_detach() after ehci_init() */
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ehci_detach(sc);
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err = bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intr_hdl);
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if (err)
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device_printf(dev, "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(dev, SYS_RES_IRQ, 0, 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(dev, 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_msm_probe),
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DEVMETHOD(device_attach, ehci_msm_attach),
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DEVMETHOD(device_detach, ehci_msm_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_msm, simplebus, ehci_driver, ehci_devclass, 0, 0);
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MODULE_DEPEND(ehci_msm, usb, 1, 1, 1);
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