ehci_ebus.c

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    1 /*-
    2  * Copyright (C) 2009 Yohanes Nugroho <yohanes@gmail.com>
    3  * based on ehci_mbus.c
    4  * Copyright (C) 2008 MARVELL INTERNATIONAL LTD.
    5  * All rights reserved.
    6  *
    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  * 3. Neither the name of MARVELL nor the names of contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
   24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   30  * SUCH DAMAGE.
   31  */
   32 
   33 
   34 #include <sys/cdefs.h>
   35 __FBSDID("$FreeBSD: releng/10.0/sys/arm/econa/ehci_ebus.c 228483 2011-12-14 00:28:54Z hselasky $");
   36 
   37 #include "opt_bus.h"
   38 
   39 #include <machine/resource.h>
   40 
   41 #include <sys/stdint.h>
   42 #include <sys/stddef.h>
   43 #include <sys/param.h>
   44 #include <sys/queue.h>
   45 #include <sys/types.h>
   46 #include <sys/systm.h>
   47 #include <sys/kernel.h>
   48 #include <sys/bus.h>
   49 #include <sys/module.h>
   50 #include <sys/lock.h>
   51 #include <sys/mutex.h>
   52 #include <sys/condvar.h>
   53 #include <sys/sysctl.h>
   54 #include <sys/sx.h>
   55 #include <sys/unistd.h>
   56 #include <sys/callout.h>
   57 #include <sys/malloc.h>
   58 #include <sys/priv.h>
   59 
   60 #include <sys/rman.h>
   61 
   62 #include <dev/usb/usb.h>
   63 #include <dev/usb/usbdi.h>
   64 
   65 #include <dev/usb/usb_core.h>
   66 #include <dev/usb/usb_busdma.h>
   67 #include <dev/usb/usb_process.h>
   68 #include <dev/usb/usb_util.h>
   69 
   70 #include <dev/usb/usb_controller.h>
   71 #include <dev/usb/usb_bus.h>
   72 #include <dev/usb/controller/ehci.h>
   73 #include <dev/usb/controller/ehcireg.h>
   74 
   75 
   76 static device_attach_t ehci_ebus_attach;
   77 static device_detach_t ehci_ebus_detach;
   78 
   79 static void *ih_err;
   80 
   81 #define EHCI_HC_DEVSTR "CNS11XX USB EHCI"
   82 #define USB_BRIDGE_INTR_MASK   0x214
   83 
   84 static int
   85 ehci_ebus_probe(device_t self)
   86 {
   87 
   88         device_set_desc(self, EHCI_HC_DEVSTR);
   89 
   90         return (BUS_PROBE_DEFAULT);
   91 }
   92 
   93 static int
   94 ehci_ebus_attach(device_t self)
   95 {
   96         ehci_softc_t *sc = device_get_softc(self);
   97         bus_space_handle_t bsh;
   98         int err;
   99         int rid;
  100 
  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 = EHCI_MAX_DEVICES;
  105 
  106         /* get all DMA memory */
  107         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  108             USB_GET_DMA_TAG(self), &ehci_iterate_hw_softc)) {
  109                 return (ENOMEM);
  110         }
  111 
  112         sc->sc_bus.usbrev = USB_REV_2_0;
  113 
  114         rid = 0;
  115         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY,
  116             &rid, 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         bsh = rman_get_bushandle(sc->sc_io_res);
  123 
  124         /*magic, undocumented initialization*/
  125         bus_space_write_4((sc)->sc_io_tag, bsh, 0x04, 0x106);
  126 
  127         bus_space_write_4((sc)->sc_io_tag, bsh, 0x40, (3 << 5)|0x2000);
  128 
  129         DELAY(1000);
  130 
  131         sc->sc_io_size =  4096;
  132 
  133         if (bus_space_subregion(sc->sc_io_tag, bsh, 0x4000000,
  134             sc->sc_io_size, &sc->sc_io_hdl) != 0)
  135                 panic("%s: unable to subregion USB host registers",
  136                     device_get_name(self));
  137 
  138         rid = 0;
  139         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  140             RF_SHAREABLE | RF_ACTIVE);
  141         if (sc->sc_irq_res == NULL) {
  142                 device_printf(self, "Could not allocate irq\n");
  143                 ehci_ebus_detach(self);
  144                 return (ENXIO);
  145         }
  146 
  147         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  148         if (!sc->sc_bus.bdev) {
  149                 device_printf(self, "Could not add USB device\n");
  150                 goto error;
  151         }
  152         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  153         device_set_desc(sc->sc_bus.bdev, EHCI_HC_DEVSTR);
  154 
  155         sprintf(sc->sc_vendor, "Cavium");
  156 
  157         err = bus_setup_intr(self,sc->sc_irq_res,
  158             INTR_TYPE_BIO | INTR_MPSAFE, NULL,
  159             (driver_intr_t *)ehci_interrupt, sc,
  160             &sc->sc_intr_hdl);
  161         if (err) {
  162                 device_printf(self, "Could not setup error irq, %d\n", err);
  163                 ih_err = NULL;
  164                 goto error;
  165         }
  166 
  167         err = ehci_init(sc);
  168         if (!err) {
  169                 err = device_probe_and_attach(sc->sc_bus.bdev);
  170         }
  171         if (err) {
  172                 device_printf(self, "USB init failed err=%d\n", err);
  173                 goto error;
  174         }
  175         return (0);
  176 
  177 error:
  178         ehci_ebus_detach(self);
  179         return (ENXIO);
  180 }
  181 
  182 static int
  183 ehci_ebus_detach(device_t self)
  184 {
  185         ehci_softc_t *sc = device_get_softc(self);
  186         device_t bdev;
  187         int err;
  188 
  189         if (sc->sc_bus.bdev) {
  190                 bdev = sc->sc_bus.bdev;
  191                 device_detach(bdev);
  192                 device_delete_child(self, bdev);
  193         }
  194         /* during module unload there are lots of children leftover */
  195         device_delete_children(self);
  196 
  197         /*
  198          * disable interrupts that might have been switched on in
  199          * ehci_ebus_attach()
  200          */
  201         if (sc->sc_io_res) {
  202                 EWRITE4(sc, USB_BRIDGE_INTR_MASK, 0);
  203         }
  204         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  205                 /*
  206                  * only call ehci_detach() after ehci_init()
  207                  */
  208                 ehci_detach(sc);
  209 
  210                 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  211 
  212                 if (err)
  213                         /* XXX or should we panic? */
  214                         device_printf(self, "Could not tear down irq, %d\n",
  215                             err);
  216                 sc->sc_intr_hdl = NULL;
  217         }
  218         if (sc->sc_irq_res) {
  219                 bus_release_resource(self, SYS_RES_IRQ, 1, sc->sc_irq_res);
  220                 sc->sc_irq_res = NULL;
  221         }
  222         if (sc->sc_io_res) {
  223                 bus_release_resource(self, SYS_RES_MEMORY, 0,
  224                     sc->sc_io_res);
  225                 sc->sc_io_res = NULL;
  226         }
  227         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
  228 
  229         return (0);
  230 }
  231 
  232 static device_method_t ehci_methods[] = {
  233         /* Device interface */
  234         DEVMETHOD(device_probe, ehci_ebus_probe),
  235         DEVMETHOD(device_attach, ehci_ebus_attach),
  236         DEVMETHOD(device_detach, ehci_ebus_detach),
  237         DEVMETHOD(device_suspend, bus_generic_suspend),
  238         DEVMETHOD(device_resume, bus_generic_resume),
  239         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  240 
  241         DEVMETHOD_END
  242 };
  243 
  244 static driver_t ehci_driver = {
  245         .name = "ehci",
  246         .methods = ehci_methods,
  247         .size = sizeof(ehci_softc_t),
  248 };
  249 
  250 static devclass_t ehci_devclass;
  251 
  252 DRIVER_MODULE(ehci, econaarm, ehci_driver, ehci_devclass, 0, 0);
  253 MODULE_DEPEND(ehci, usb, 1, 1, 1);

Cache object: 4e94902c49a4da08bff2d05eb0f6f858

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FreeBSD/Linux Kernel Cross Reference sys/arm/econa/ehci_ebus.c

FreeBSD/Linux Kernel Cross Reference
sys/arm/econa/ehci_ebus.c