bhnd_ohci.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-NetBSD
    3  *
    4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    5  * Copyright (c) 2010, Aleksandr Rybalko <ray@ddteam.net>
    6  * All rights reserved.
    7  *
    8  * This code is derived from software contributed to The NetBSD Foundation
    9  * by Lennart Augustsson (augustss@carlstedt.se) at
   10  * Carlstedt Research & Technology.
   11  *
   12  * Redistribution and use in source and binary forms, with or without
   13  * modification, are permitted provided that the following conditions
   14  * are met:
   15  * 1. Redistributions of source code must retain the above copyright
   16  *    notice, this list of conditions and the following disclaimer.
   17  * 2. Redistributions in binary form must reproduce the above copyright
   18  *    notice, this list of conditions and the following disclaimer in the
   19  *    documentation and/or other materials provided with the distribution.
   20  *
   21  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   23  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   31  * POSSIBILITY OF SUCH DAMAGE.
   32  */
   33 
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD$");
   36 
   37 /*
   38  * USB Open Host Controller driver.
   39  *
   40  * OHCI spec: http://www.intel.com/design/usb/ohci11d.pdf
   41  */
   42 
   43 /* The low level controller code for OHCI has been split into
   44  * SIBA probes and OHCI specific code. This was done to facilitate the
   45  * sharing of code between *BSD's
   46  */
   47 
   48 #include <sys/stdint.h>
   49 #include <sys/stddef.h>
   50 #include <sys/param.h>
   51 #include <sys/queue.h>
   52 #include <sys/rman.h>
   53 #include <sys/types.h>
   54 #include <sys/systm.h>
   55 #include <sys/kernel.h>
   56 #include <sys/bus.h>
   57 #include <sys/linker_set.h>
   58 #include <sys/module.h>
   59 #include <sys/lock.h>
   60 #include <sys/mutex.h>
   61 #include <sys/condvar.h>
   62 #include <sys/sysctl.h>
   63 #include <sys/sx.h>
   64 #include <sys/unistd.h>
   65 #include <sys/callout.h>
   66 #include <sys/malloc.h>
   67 #include <sys/priv.h>
   68 
   69 #include <dev/usb/usb.h>
   70 #include <dev/usb/usbdi.h>
   71 
   72 #include <dev/usb/usb_core.h>
   73 #include <dev/usb/usb_busdma.h>
   74 #include <dev/usb/usb_process.h>
   75 #include <dev/usb/usb_util.h>
   76 
   77 #include <dev/usb/usb_controller.h>
   78 #include <dev/usb/usb_bus.h>
   79 #include <dev/usb/controller/ohci.h>
   80 #include <dev/usb/controller/ohcireg.h>
   81 
   82 static device_probe_t bhnd_ohci_probe;
   83 static device_attach_t bhnd_ohci_attach;
   84 static device_detach_t bhnd_ohci_detach;
   85 
   86 static int
   87 bhnd_ohci_probe(device_t self)
   88 {
   89         device_set_desc(self, "Broadcom OHCI");
   90         return (0);
   91 }
   92 
   93 static int
   94 bhnd_ohci_attach(device_t self)
   95 {
   96         ohci_softc_t    *sc;
   97         int              rid;
   98         int              err;
   99 
  100         sc = device_get_softc(self);
  101         /* initialise some bus fields */
  102         sc->sc_bus.parent = self;
  103         sc->sc_bus.devices = sc->sc_devices;
  104         sc->sc_bus.devices_max = OHCI_MAX_DEVICES;
  105         sc->sc_bus.dma_bits = 32;
  106 
  107         /* get all DMA memory */
  108         if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(self),
  109             &ohci_iterate_hw_softc)) {
  110                 return (ENOMEM);
  111         }
  112         sc->sc_dev = self;
  113 
  114         rid = 0;
  115         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  116             RF_ACTIVE);
  117         if (!sc->sc_io_res) {
  118                 device_printf(self, "Could not map memory\n");
  119                 goto error;
  120         }
  121         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  122         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  123         sc->sc_io_size = rman_get_size(sc->sc_io_res);
  124 
  125         rid = 0;
  126         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  127             RF_SHAREABLE | RF_ACTIVE);
  128         if (sc->sc_irq_res == NULL) {
  129                 device_printf(self, "Could not allocate irq\n");
  130                 goto error;
  131         }
  132         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  133         if (!sc->sc_bus.bdev) {
  134                 device_printf(self, "Could not add USB device\n");
  135                 goto error;
  136         }
  137         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  138 
  139         strlcpy(sc->sc_vendor, "Broadcom", sizeof(sc->sc_vendor));
  140 
  141         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  142             NULL, (driver_intr_t *)ohci_interrupt, sc, &sc->sc_intr_hdl);
  143 
  144         if (err) {
  145                 device_printf(self, "Could not setup irq, %d\n", err);
  146                 sc->sc_intr_hdl = NULL;
  147                 goto error;
  148         }
  149         err = ohci_init(sc);
  150         if (!err) {
  151                 err = device_probe_and_attach(sc->sc_bus.bdev);
  152         }
  153         if (err) {
  154                 device_printf(self, "USB init failed\n");
  155                 goto error;
  156         }
  157         return (0);
  158 
  159 error:
  160         bhnd_ohci_detach(self);
  161         return (ENXIO);
  162 }
  163 
  164 static int
  165 bhnd_ohci_detach(device_t self)
  166 {
  167         ohci_softc_t    *sc;
  168 
  169         sc = device_get_softc(self);
  170 
  171         /* during module unload there are lots of children leftover */
  172         device_delete_children(self);
  173 
  174         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  175                 /*
  176                  * only call ohci_detach() after ohci_init()
  177                  */
  178                 ohci_detach(sc);
  179 
  180                 int err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  181 
  182                 if (err) {
  183                         /* XXX or should we panic? */
  184                         device_printf(self, "Could not tear down irq, %d\n",
  185                             err);
  186                 }
  187                 sc->sc_intr_hdl = NULL;
  188         }
  189         if (sc->sc_irq_res) {
  190                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
  191                 sc->sc_irq_res = NULL;
  192         }
  193         if (sc->sc_io_res) {
  194                 bus_release_resource(self, SYS_RES_MEMORY, 0,
  195                     sc->sc_io_res);
  196                 sc->sc_io_res = NULL;
  197         }
  198         usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);
  199 
  200         return (0);
  201 }
  202 
  203 static device_method_t bhnd_ohci_methods[] = {
  204         /* Device interface */
  205         DEVMETHOD(device_probe,         bhnd_ohci_probe),
  206         DEVMETHOD(device_attach,        bhnd_ohci_attach),
  207         DEVMETHOD(device_detach,        bhnd_ohci_detach),
  208         DEVMETHOD(device_suspend,       bus_generic_suspend),
  209         DEVMETHOD(device_resume,        bus_generic_resume),
  210         DEVMETHOD(device_shutdown,      bus_generic_shutdown),
  211 
  212         DEVMETHOD_END
  213 };
  214 
  215 static driver_t ohci_driver = {
  216         .name = "ohci",
  217         .methods = bhnd_ohci_methods,
  218         .size = sizeof(struct ohci_softc),
  219 };
  220 
  221 DRIVER_MODULE(ohci, bhnd_usb, ohci_driver, 0, 0);
  222 MODULE_DEPEND(ohci, usb, 1, 1, 1);

Cache object: 73685464d96f24fe51c0a81217f335f1

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FreeBSD/Linux Kernel Cross Reference sys/dev/bhnd/cores/usb/bhnd_ohci.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/bhnd/cores/usb/bhnd_ohci.c