generic_xhci.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2015 Semihalf.
    5  * Copyright (c) 2015 Stormshield.
    6  * All rights reserved.
    7  *
    8  * Redistribution and use in source and binary forms, with or without
    9  * modification, are permitted provided that the following conditions
   10  * are met:
   11  * 1. Redistributions of source code must retain the above copyright
   12  *    notice, this list of conditions and the following disclaimer.
   13  * 2. Redistributions in binary form must reproduce the above copyright
   14  *    notice, this list of conditions and the following disclaimer in the
   15  *    documentation and/or other materials provided with the distribution.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD$");
   32 
   33 #include <sys/stdint.h>
   34 #include <sys/stddef.h>
   35 #include <sys/param.h>
   36 #include <sys/queue.h>
   37 #include <sys/types.h>
   38 #include <sys/systm.h>
   39 #include <sys/kernel.h>
   40 #include <sys/bus.h>
   41 #include <sys/module.h>
   42 #include <sys/lock.h>
   43 #include <sys/mutex.h>
   44 #include <sys/condvar.h>
   45 #include <sys/sysctl.h>
   46 #include <sys/sx.h>
   47 #include <sys/unistd.h>
   48 #include <sys/priv.h>
   49 #include <sys/rman.h>
   50 
   51 #include <dev/usb/usb.h>
   52 #include <dev/usb/usbdi.h>
   53 
   54 #include <dev/usb/usb_core.h>
   55 #include <dev/usb/usb_busdma.h>
   56 #include <dev/usb/usb_process.h>
   57 #include <dev/usb/usb_util.h>
   58 
   59 #include <dev/usb/usb_controller.h>
   60 #include <dev/usb/usb_bus.h>
   61 #include <dev/usb/controller/xhci.h>
   62 #include <dev/usb/controller/xhcireg.h>
   63 
   64 #include "generic_xhci.h"
   65 
   66 #define IS_DMA_32B      1
   67 
   68 int
   69 generic_xhci_attach(device_t dev)
   70 {
   71         struct xhci_softc *sc = device_get_softc(dev);
   72         int err = 0, rid = 0;
   73 
   74         sc->sc_bus.parent = dev;
   75         sc->sc_bus.devices = sc->sc_devices;
   76         sc->sc_bus.devices_max = XHCI_MAX_DEVICES;
   77 
   78         sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
   79             RF_ACTIVE);
   80         if (sc->sc_io_res == NULL) {
   81                 device_printf(dev, "Failed to map memory\n");
   82                 generic_xhci_detach(dev);
   83                 return (ENXIO);
   84         }
   85 
   86         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
   87         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
   88         sc->sc_io_size = rman_get_size(sc->sc_io_res);
   89 
   90         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
   91             RF_SHAREABLE | RF_ACTIVE);
   92         if (sc->sc_irq_res == NULL) {
   93                 device_printf(dev, "Failed to allocate IRQ\n");
   94                 generic_xhci_detach(dev);
   95                 return (ENXIO);
   96         }
   97 
   98         sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
   99         if (sc->sc_bus.bdev == NULL) {
  100                 device_printf(dev, "Failed to add USB device\n");
  101                 generic_xhci_detach(dev);
  102                 return (ENXIO);
  103         }
  104 
  105         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  106 
  107         sprintf(sc->sc_vendor, XHCI_HC_VENDOR);
  108         device_set_desc(sc->sc_bus.bdev, XHCI_HC_DEVSTR);
  109 
  110         err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  111             NULL, (driver_intr_t *)xhci_interrupt, sc, &sc->sc_intr_hdl);
  112         if (err != 0) {
  113                 device_printf(dev, "Failed to setup error IRQ, %d\n", err);
  114                 sc->sc_intr_hdl = NULL;
  115                 generic_xhci_detach(dev);
  116                 return (err);
  117         }
  118 
  119         err = xhci_init(sc, dev, IS_DMA_32B);
  120         if (err != 0) {
  121                 device_printf(dev, "Failed to init XHCI, with error %d\n", err);
  122                 generic_xhci_detach(dev);
  123                 return (ENXIO);
  124         }
  125 
  126         err = xhci_start_controller(sc);
  127         if (err != 0) {
  128                 device_printf(dev, "Failed to start XHCI controller, with error %d\n", err);
  129                 generic_xhci_detach(dev);
  130                 return (ENXIO);
  131         }
  132 
  133         err = device_probe_and_attach(sc->sc_bus.bdev);
  134         if (err != 0) {
  135                 device_printf(dev, "Failed to initialize USB, with error %d\n", err);
  136                 generic_xhci_detach(dev);
  137                 return (ENXIO);
  138         }
  139 
  140         return (0);
  141 }
  142 
  143 int
  144 generic_xhci_detach(device_t dev)
  145 {
  146         struct xhci_softc *sc = device_get_softc(dev);
  147         int err;
  148 
  149         /* during module unload there are lots of children leftover */
  150         device_delete_children(dev);
  151 
  152         if (sc->sc_irq_res != NULL && sc->sc_intr_hdl != NULL) {
  153                 err = bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intr_hdl);
  154                 if (err != 0)
  155                         device_printf(dev, "Could not tear down irq, %d\n",
  156                             err);
  157                 sc->sc_intr_hdl = NULL;
  158         }
  159 
  160         if (sc->sc_irq_res != NULL) {
  161                 bus_release_resource(dev, SYS_RES_IRQ,
  162                     rman_get_rid(sc->sc_irq_res), sc->sc_irq_res);
  163                 sc->sc_irq_res = NULL;
  164         }
  165 
  166         if (sc->sc_io_res != NULL) {
  167                 bus_release_resource(dev, SYS_RES_MEMORY,
  168                     rman_get_rid(sc->sc_io_res), sc->sc_io_res);
  169                 sc->sc_io_res = NULL;
  170         }
  171 
  172         xhci_uninit(sc);
  173 
  174         return (0);
  175 }
  176 
  177 static device_method_t xhci_methods[] = {
  178         /* Device interface */
  179         DEVMETHOD(device_attach, generic_xhci_attach),
  180         DEVMETHOD(device_detach, generic_xhci_detach),
  181         DEVMETHOD(device_suspend, bus_generic_suspend),
  182         DEVMETHOD(device_resume, bus_generic_resume),
  183         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  184 
  185         DEVMETHOD_END
  186 };
  187 
  188 driver_t generic_xhci_driver = {
  189         "xhci",
  190         xhci_methods,
  191         sizeof(struct xhci_softc),
  192 };

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FreeBSD/Linux Kernel Cross Reference sys/dev/usb/controller/generic_xhci.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/controller/generic_xhci.c