The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/rmi/xls_ehci.c

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    1 /*-
    2  * Copyright (c) 1998 The NetBSD Foundation, Inc.
    3  * All rights reserved.
    4  *
    5  * This code is derived from software contributed to The NetBSD Foundation
    6  * by Lennart Augustsson (augustss@carlstedt.se) at
    7  * Carlstedt Research & Technology.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   19  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   20  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   21  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   28  * POSSIBILITY OF SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD$");
   33 
   34 #include "opt_bus.h"
   35 
   36 #include <sys/stdint.h>
   37 #include <sys/stddef.h>
   38 #include <sys/param.h>
   39 #include <sys/queue.h>
   40 #include <sys/types.h>
   41 #include <sys/systm.h>
   42 #include <sys/kernel.h>
   43 #include <sys/bus.h>
   44 #include <sys/module.h>
   45 #include <sys/lock.h>
   46 #include <sys/mutex.h>
   47 #include <sys/condvar.h>
   48 #include <sys/sysctl.h>
   49 #include <sys/sx.h>
   50 #include <sys/unistd.h>
   51 #include <sys/callout.h>
   52 #include <sys/malloc.h>
   53 #include <sys/priv.h>
   54 
   55 #include <sys/rman.h>
   56 #include <machine/resource.h>
   57 
   58 #include <dev/usb/usb.h>
   59 #include <dev/usb/usbdi.h>
   60 
   61 #include <dev/usb/usb_core.h>
   62 #include <dev/usb/usb_busdma.h>
   63 #include <dev/usb/usb_process.h>
   64 #include <dev/usb/usb_util.h>
   65 
   66 #include <dev/usb/usb_controller.h>
   67 #include <dev/usb/usb_bus.h>
   68 #include <dev/usb/controller/ehci.h>
   69 #include <dev/usb/controller/ehcireg.h>
   70 #include <mips/rmi/pic.h>
   71 
   72 static device_attach_t ehci_xls_attach;
   73 static device_detach_t ehci_xls_detach;
   74 
   75 static const char *xlr_usb_dev_desc = "RMI XLR USB 2.0 controller";
   76 static const char *xlr_vendor_desc = "RMI Corp";
   77 
   78 static int
   79 ehci_xls_probe(device_t self)
   80 {
   81         /* TODO see if usb is enabled on the board */
   82         device_set_desc(self, xlr_usb_dev_desc);
   83         return BUS_PROBE_DEFAULT;
   84 }
   85 
   86 static int
   87 ehci_xls_attach(device_t self)
   88 {
   89         ehci_softc_t *sc = device_get_softc(self);
   90         int err;
   91         int rid;
   92 
   93         sc->sc_bus.parent = self;
   94         sc->sc_bus.devices = sc->sc_devices;
   95         sc->sc_bus.devices_max = EHCI_MAX_DEVICES;
   96         sc->sc_bus.dma_bits = 32;
   97 
   98         /* get all DMA memory */
   99         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  100             USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
  101                 return (ENOMEM);
  102         }
  103 
  104         rid = 0;
  105         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  106             RF_ACTIVE);
  107         if (!sc->sc_io_res) {
  108                 device_printf(self, "Could not map memory\n");
  109                 goto error;
  110         }
  111         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  112         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  113         printf("IO Resource tag %lx, hdl %lx, size %lx\n",
  114                (u_long)sc->sc_io_tag, (u_long)sc->sc_io_hdl, 
  115                (u_long)sc->sc_io_size);
  116 
  117         rid = 0;
  118         sc->sc_irq_res = bus_alloc_resource(self, SYS_RES_IRQ, &rid,
  119             PIC_USB_IRQ, PIC_USB_IRQ, 1, RF_SHAREABLE | RF_ACTIVE);
  120         if (sc->sc_irq_res == NULL) {
  121                 device_printf(self, "Could not allocate irq\n");
  122                 goto error;
  123         }
  124 
  125         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  126         if (!sc->sc_bus.bdev) {
  127                 device_printf(self, "Could not add USB device\n");
  128                 goto error;
  129         }
  130         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  131         device_set_desc(sc->sc_bus.bdev, xlr_usb_dev_desc);
  132 
  133         sprintf(sc->sc_vendor, xlr_vendor_desc);
  134 
  135         err = bus_setup_intr(self, sc->sc_irq_res,
  136             INTR_TYPE_BIO | INTR_MPSAFE, NULL,
  137             (driver_intr_t *) ehci_interrupt, sc, &sc->sc_intr_hdl);
  138         if (err) {
  139                 device_printf(self, "Could not setup irq, %d\n", err);
  140                 sc->sc_intr_hdl = NULL;
  141                 goto error;
  142         }
  143 
  144         err = ehci_init(sc);
  145         if (err) {
  146                 device_printf(self, "USB init failed err=%d\n", err);
  147                 goto error;
  148         }
  149 
  150         err = device_probe_and_attach(sc->sc_bus.bdev);
  151         if (err) {
  152                 device_printf(self, "USB probe and attach failed err=%d\n", err);
  153                 goto error;
  154         }
  155 
  156         return (0);
  157 
  158 error:
  159         ehci_xls_detach(self);
  160         return (ENXIO);
  161 }
  162 
  163 static int
  164 ehci_xls_detach(device_t self)
  165 {
  166         ehci_softc_t *sc = device_get_softc(self);
  167         int err;
  168 
  169         /* during module unload there are lots of children leftover */
  170         device_delete_children(self);
  171 
  172         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  173                 ehci_detach(sc);
  174 
  175                 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  176                 if (err)
  177                         device_printf(self, "Could not tear down irq, %d\n",
  178                             err);
  179                 sc->sc_intr_hdl = 0;
  180         }
  181 
  182         if (sc->sc_irq_res) {
  183                 bus_release_resource(self, SYS_RES_IRQ, 0, sc->sc_irq_res);
  184                 sc->sc_irq_res = NULL;
  185         }
  186         if (sc->sc_io_res) {
  187                 bus_release_resource(self, SYS_RES_MEMORY, 0,
  188                     sc->sc_io_res);
  189                 sc->sc_io_res = NULL;
  190                 sc->sc_io_tag = 0;
  191                 sc->sc_io_hdl = 0;
  192         }
  193 
  194         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
  195 
  196         return (0);
  197 }
  198 
  199 static device_method_t ehci_methods[] = {
  200         /* Device interface */
  201         DEVMETHOD(device_probe, ehci_xls_probe),
  202         DEVMETHOD(device_attach, ehci_xls_attach),
  203         DEVMETHOD(device_detach, ehci_xls_detach),
  204         DEVMETHOD(device_suspend, bus_generic_suspend),
  205         DEVMETHOD(device_resume, bus_generic_resume),
  206         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  207 
  208         DEVMETHOD_END
  209 };
  210 
  211 static driver_t ehci_driver = {
  212         .name = "ehci",
  213         .methods = ehci_methods,
  214         .size = sizeof(struct ehci_softc),
  215 };
  216 
  217 static devclass_t ehci_devclass;
  218 
  219 DRIVER_MODULE(ehci, iodi, ehci_driver, ehci_devclass, 0, 0);
  220 MODULE_DEPEND(ehci, usb, 1, 1, 1);

Cache object: 300b8acb1281cba8dd31494561d462d7


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