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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2018 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* This software was developed by BAE Systems, the University of Cambridge
* Computer Laboratory, and Memorial University under DARPA/AFRL contract
* FA8650-15-C-7558 ("CADETS"), as part of the DARPA Transparent Computing
* (TC) research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "opt_bus.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/condvar.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <dev/ofw/ofw_bus.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usb_core.h>
#include <dev/usb/usb_busdma.h>
#include <dev/usb/usb_process.h>
#include <dev/usb/usb_util.h>
#include <dev/usb/usb_controller.h>
#include <dev/usb/usb_bus.h>
#include <dev/usb/controller/ehci.h>
#include <dev/usb/controller/ehcireg.h>
struct ehci_msm_softc {
ehci_softc_t base;
struct resource *res[3];
};
static struct resource_spec ehci_msm_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ SYS_RES_MEMORY, 1, RF_ACTIVE },
{ SYS_RES_IRQ, 0, RF_ACTIVE },
{ -1, 0 }
};
#define EHCI_HC_DEVSTR "Qualcomm USB 2.0 controller"
static device_attach_t ehci_msm_attach;
static device_detach_t ehci_msm_detach;
static int
ehci_msm_probe(device_t dev)
{
if (!ofw_bus_is_compatible(dev, "qcom,ci-hdrc"))
return (ENXIO);
device_set_desc(dev, EHCI_HC_DEVSTR);
return (BUS_PROBE_DEFAULT);
}
static int
ehci_msm_attach(device_t dev)
{
struct ehci_msm_softc *esc;
bus_space_handle_t bsh;
ehci_softc_t *sc;
int err;
esc = device_get_softc(dev);
sc = &esc->base;
sc->sc_bus.parent = dev;
sc->sc_bus.devices = sc->sc_devices;
sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
sc->sc_bus.dma_bits = 32;
if (bus_alloc_resources(dev, ehci_msm_spec, esc->res)) {
device_printf(dev, "could not allocate resources\n");
return (ENXIO);
}
sc->sc_io_tag = rman_get_bustag(esc->res[0]);
/* Get all DMA memory */
if (usb_bus_mem_alloc_all(&sc->sc_bus,
USB_GET_DMA_TAG(dev), &ehci_iterate_hw_softc)) {
return (ENOMEM);
}
/* EHCI registers */
sc->sc_io_tag = rman_get_bustag(esc->res[0]);
bsh = rman_get_bushandle(esc->res[0]);
sc->sc_io_size = rman_get_size(esc->res[0]);
if (bus_space_subregion(sc->sc_io_tag, bsh, 0x100,
sc->sc_io_size, &sc->sc_io_hdl) != 0)
panic("%s: unable to subregion USB host registers",
device_get_name(dev));
sc->sc_bus.bdev = device_add_child(dev, "usbus", DEVICE_UNIT_ANY);
if (!sc->sc_bus.bdev) {
device_printf(dev, "Could not add USB device\n");
goto error;
}
device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
sprintf(sc->sc_vendor, "Qualcomm");
err = bus_setup_intr(dev, esc->res[2], INTR_TYPE_BIO | INTR_MPSAFE,
NULL, (driver_intr_t *)ehci_interrupt, sc, &sc->sc_intr_hdl);
if (err) {
device_printf(dev, "Could not setup irq, %d\n", err);
sc->sc_intr_hdl = NULL;
goto error;
}
sc->sc_flags |= EHCI_SCFLG_DONTRESET | EHCI_SCFLG_NORESTERM;
err = ehci_init(sc);
if (!err) {
sc->sc_flags |= EHCI_SCFLG_DONEINIT;
err = device_probe_and_attach(sc->sc_bus.bdev);
}
if (err) {
device_printf(dev, "USB init failed err=%d\n", err);
goto error;
}
return (0);
error:
ehci_msm_detach(dev);
return (ENXIO);
}
static int
ehci_msm_detach(device_t dev)
{
ehci_softc_t *sc;
device_t bdev;
int err;
sc = device_get_softc(dev);
err = bus_generic_detach(dev);
if (err != 0)
return (err);
if (sc->sc_irq_res && sc->sc_intr_hdl) {
/* only call ehci_detach() after ehci_init() */
ehci_detach(sc);
err = bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intr_hdl);
if (err)
device_printf(dev, "Could not tear down irq, %d\n",
err);
sc->sc_intr_hdl = NULL;
}
if (sc->sc_irq_res) {
bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
sc->sc_irq_res = NULL;
}
if (sc->sc_io_res) {
bus_release_resource(dev, 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 device_method_t ehci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, ehci_msm_probe),
DEVMETHOD(device_attach, ehci_msm_attach),
DEVMETHOD(device_detach, ehci_msm_detach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static driver_t ehci_driver = {
.name = "ehci",
.methods = ehci_methods,
.size = sizeof(ehci_softc_t),
};
DRIVER_MODULE(ehci_msm, simplebus, ehci_driver, 0, 0);
MODULE_DEPEND(ehci_msm, usb, 1, 1, 1);
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