rt305x_ohci.c

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    1 #include <sys/cdefs.h>
    2 __FBSDID("$FreeBSD$");
    3 
    4 /*-
    5  * Copyright (c) 2015 Stanislav Galabov. All rights reserved.
    6  * Copyright (c) 2010,2011 Aleksandr Rybalko. All rights reserved.
    7  * Copyright (c) 2007-2008 Hans Petter Selasky. All rights reserved.
    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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   28  * SUCH DAMAGE.
   29  */
   30 
   31 #include <sys/stdint.h>
   32 #include <sys/stddef.h>
   33 #include <sys/param.h>
   34 #include <sys/queue.h>
   35 #include <sys/types.h>
   36 #include <sys/systm.h>
   37 #include <sys/kernel.h>
   38 #include <sys/bus.h>
   39 #include <sys/module.h>
   40 #include <sys/lock.h>
   41 #include <sys/mutex.h>
   42 #include <sys/condvar.h>
   43 #include <sys/sysctl.h>
   44 #include <sys/sx.h>
   45 #include <sys/unistd.h>
   46 #include <sys/callout.h>
   47 #include <sys/malloc.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 
   62 #include <dev/usb/controller/ohci.h>
   63 
   64 #include <mips/rt305x/rt305xreg.h>
   65 #include <mips/rt305x/rt305x_sysctlvar.h>
   66 
   67 #define OHCI_HC_DEVSTR  "Ralink integrated USB controller"
   68 
   69 static device_probe_t ohci_obio_probe;
   70 static device_attach_t ohci_obio_attach;
   71 static device_detach_t ohci_obio_detach;
   72 
   73 static int
   74 ohci_obio_probe(device_t self)
   75 {
   76         device_set_desc(self, OHCI_HC_DEVSTR);
   77 
   78         return (BUS_PROBE_DEFAULT);
   79 }
   80 
   81 static int
   82 ohci_obio_attach(device_t self)
   83 {
   84         ohci_softc_t *sc = device_get_softc(self);
   85         uint32_t reg;
   86         int err;
   87         int rid;
   88 
   89         /* setup controller interface softc */
   90         reg = rt305x_sysctl_get(SYSCTL_SYSCFG1);
   91         reg |= SYSCTL_SYSCFG1_USB0_HOST_MODE;
   92         rt305x_sysctl_set(SYSCTL_SYSCFG1, reg);
   93 
   94         reg = rt305x_sysctl_get(SYSCTL_CLKCFG1);
   95         reg |= SYSCTL_CLKCFG1_UPHY0_CLK_EN;
   96 #ifdef MT7620
   97         reg |= SYSCTL_CLKCFG1_UPHY1_CLK_EN;
   98 #endif
   99         rt305x_sysctl_set(SYSCTL_CLKCFG1, reg);
  100 
  101         reg = rt305x_sysctl_get(SYSCTL_RSTCTRL);
  102         reg |= SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1;
  103         rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
  104         reg &= ~(SYSCTL_RSTCTRL_UPHY0 | SYSCTL_RSTCTRL_UPHY1);
  105         DELAY(100000);
  106         rt305x_sysctl_set(SYSCTL_RSTCTRL, reg);
  107         DELAY(100000);
  108 
  109         /* initialise some bus fields */
  110         sc->sc_bus.parent = self;
  111         sc->sc_bus.devices = sc->sc_devices;
  112         sc->sc_bus.devices_max = OHCI_MAX_DEVICES;
  113         sc->sc_bus.dma_bits = 32;
  114 
  115         /* get all DMA memory */
  116         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  117             USB_GET_DMA_TAG(self), &ohci_iterate_hw_softc)) {
  118                 printf("No mem\n");
  119                 return (ENOMEM);
  120         }
  121 
  122         rid = 0;
  123         sc->sc_io_res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid,
  124                                 RF_ACTIVE);
  125         if (!sc->sc_io_res) {
  126                 device_printf(self, "Could not map memory\n");
  127                 goto error;
  128         }
  129         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  130         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  131         sc->sc_io_size = rman_get_size(sc->sc_io_res);
  132 
  133         rid = 0;
  134         sc->sc_irq_res = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
  135                 RF_SHAREABLE | RF_ACTIVE);
  136         if (sc->sc_irq_res == NULL) {
  137                 device_printf(self, "Could not allocate irq\n");
  138                 goto error;
  139         }
  140 
  141         sc->sc_bus.bdev = device_add_child(self, "usbus", -1);
  142         if (!(sc->sc_bus.bdev)) {
  143                 device_printf(self, "Could not add USB device\n");
  144                 goto error;
  145         }
  146         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  147         device_set_desc(sc->sc_bus.bdev, OHCI_HC_DEVSTR);
  148 
  149         sprintf(sc->sc_vendor, "Ralink");
  150 
  151         err = bus_setup_intr(self, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
  152                 NULL, (driver_intr_t *)ohci_interrupt, sc, &sc->sc_intr_hdl);
  153         if (err) {
  154                 device_printf(self, "Could not setup irq, %d\n", err);
  155                 sc->sc_intr_hdl = NULL;
  156                 goto error;
  157         }
  158 
  159         err = ohci_init(sc);
  160         if (!err) {
  161                 err = device_probe_and_attach(sc->sc_bus.bdev);
  162         }
  163         if (err) {
  164                 device_printf(self, "USB init failed err=%d\n", err);
  165                 goto error;
  166         }
  167         return (0);
  168 
  169 error:
  170         ohci_obio_detach(self);
  171         return (ENXIO);
  172 }
  173 
  174 static int
  175 ohci_obio_detach(device_t self)
  176 {
  177         ohci_softc_t *sc = device_get_softc(self);
  178         int err;
  179 
  180         /* during module unload there are lots of children leftover */
  181         device_delete_children(self);
  182 
  183         if (sc->sc_irq_res && sc->sc_intr_hdl) {
  184                 /*
  185                  * only call ohci_detach() after ohci_init()
  186                  */
  187                 ohci_detach(sc);
  188 
  189                 /* Stop OHCI clock */
  190                 rt305x_sysctl_set(SYSCTL_CLKCFG1, 
  191                   rt305x_sysctl_get(SYSCTL_CLKCFG1) & 
  192                   ~(SYSCTL_CLKCFG1_UPHY0_CLK_EN
  193 #ifdef MT7620
  194                     | SYSCTL_CLKCFG1_UPHY1_CLK_EN
  195 #endif
  196                 ));
  197 
  198                 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
  199                 if (err)
  200                         device_printf(self, "Could not tear down irq, %d\n",
  201                                 err);
  202                 sc->sc_intr_hdl = NULL;
  203         }
  204         if (sc->sc_irq_res) {
  205                 bus_release_resource(self, SYS_RES_IRQ, 0,
  206                     sc->sc_irq_res);
  207                 sc->sc_irq_res = NULL;
  208         }
  209         if (sc->sc_io_res) {
  210                 bus_release_resource(self, SYS_RES_MEMORY, 0,
  211                     sc->sc_io_res);
  212                 sc->sc_io_res = NULL;
  213         }
  214         usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc);
  215 
  216         return (0);
  217 }
  218 
  219 static device_method_t ohci_obio_methods[] = {
  220         /* Device interface */
  221         DEVMETHOD(device_probe, ohci_obio_probe),
  222         DEVMETHOD(device_attach, ohci_obio_attach),
  223         DEVMETHOD(device_detach, ohci_obio_detach),
  224         DEVMETHOD(device_suspend, bus_generic_suspend),
  225         DEVMETHOD(device_resume, bus_generic_resume),
  226         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  227 
  228         DEVMETHOD_END
  229 };
  230 
  231 static driver_t ohci_obio_driver = {
  232         .name = "ohci",
  233         .methods = ohci_obio_methods,
  234         .size = sizeof(ohci_softc_t),
  235 };
  236 
  237 static devclass_t ohci_obio_devclass;
  238 
  239 DRIVER_MODULE(ohci, obio, ohci_obio_driver, ohci_obio_devclass, 0, 0);

Cache object: 2aece4a5564391d2991b03d969a46b99

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FreeBSD/Linux Kernel Cross Reference sys/mips/rt305x/rt305x_ohci.c

FreeBSD/Linux Kernel Cross Reference
sys/mips/rt305x/rt305x_ohci.c