Date: Thu, 25 Jan 2018 16:58:23 +0000 (UTC) From: Ruslan Bukin <br@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r328402 - head/sys/dev/usb/controller Message-ID: <201801251658.w0PGwNcq058492@repo.freebsd.org>
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Author: br Date: Thu Jan 25 16:58:23 2018 New Revision: 328402 URL: https://svnweb.freebsd.org/changeset/base/328402 Log: Add basic driver for Qualcomm USB 2.0 EHCI controller. This driver relies on system initialization in u-boot. Tested on DragonBoard 410c. Sponsored by: DARPA, AFRL Added: head/sys/dev/usb/controller/ehci_msm.c (contents, props changed) Added: head/sys/dev/usb/controller/ehci_msm.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/usb/controller/ehci_msm.c Thu Jan 25 16:58:23 2018 (r328402) @@ -0,0 +1,231 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause-FreeBSD + * + * 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 <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#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", -1); + 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); + + if (sc->sc_bus.bdev) { + bdev = sc->sc_bus.bdev; + device_detach(bdev); + device_delete_child(dev, bdev); + } + + device_delete_children(dev); + + 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), +}; + +static devclass_t ehci_devclass; + +DRIVER_MODULE(ehci_msm, simplebus, ehci_driver, ehci_devclass, 0, 0); +MODULE_DEPEND(ehci_msm, usb, 1, 1, 1);
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