sys/mips/rt305x/rt305x_dotg.c

   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/dwc_otg.h>
  63 #include <mips/rt305x/rt305xreg.h>
  64 #include <mips/rt305x/rt305x_sysctlvar.h>
  65
  66 #define MEM_RID 0
  67
  68 static device_probe_t dotg_obio_probe;
  69 static device_attach_t dotg_obio_attach;
  70 static device_detach_t dotg_obio_detach;
  71
  72 static int
  73 dotg_obio_probe(device_t dev)
  74 {
  75         device_set_desc(dev, "DWC like USB OTG controller");
  76         return (0);
  77 }
  78
  79 static int
  80 dotg_obio_attach(device_t dev)
  81 {
  82         struct dwc_otg_softc *sc = device_get_softc(dev);
  83         uint32_t tmp;
  84         int err, rid;
  85
  86         /* setup controller interface softc */
  87
  88         /* initialise some bus fields */
  89         sc->sc_mode = DWC_MODE_HOST;
  90         sc->sc_bus.parent = dev;
  91         sc->sc_bus.devices = sc->sc_devices;
  92         sc->sc_bus.devices_max = DWC_OTG_MAX_DEVICES;
  93         sc->sc_bus.dma_bits = 32;
  94
  95         /* get all DMA memory */
  96         if (usb_bus_mem_alloc_all(&sc->sc_bus,
  97             USB_GET_DMA_TAG(dev), NULL)) {
  98                 printf("No mem\n");
  99                 return (ENOMEM);
 100         }
 101         rid = 0;
 102         sc->sc_io_res =
 103             bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
 104         if (!(sc->sc_io_res)) {
 105                 printf("Can`t alloc MEM\n");
 106                 goto error;
 107         }
 108         sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
 109         sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
 110         sc->sc_io_size = rman_get_size(sc->sc_io_res);
 111
 112         rid = 0;
 113         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 114             &rid, RF_ACTIVE);
 115         if (!(sc->sc_irq_res)) {
 116                 printf("Can`t alloc IRQ\n");
 117                 goto error;
 118         }
 119
 120         sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
 121         if (!(sc->sc_bus.bdev)) {
 122                 printf("Can`t add usbus\n");
 123                 goto error;
 124         }
 125         device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
 126
 127 #if (__FreeBSD_version >= 700031)
 128         err = bus_setup_intr(dev, sc->sc_irq_res,
 129             INTR_TYPE_TTY | INTR_MPSAFE, dwc_otg_filter_interrupt,
 130             dwc_otg_interrupt, sc, &sc->sc_intr_hdl);
 131 #else
 132         #error error
 133         err = bus_setup_intr(dev, sc->sc_irq_res,
 134             INTR_TYPE_BIO | INTR_MPSAFE,(driver_intr_t*)dwc_otg_interrupt,
 135             sc, &sc->sc_intr_hdl);
 136 #endif
 137         if (err) {
 138                 sc->sc_intr_hdl = NULL;
 139                 printf("Can`t set IRQ handle\n");
 140                 goto error;
 141         }
 142
 143         /* Run clock for OTG core */
 144         rt305x_sysctl_set(SYSCTL_CLKCFG1, rt305x_sysctl_get(SYSCTL_CLKCFG1) |
 145             SYSCTL_CLKCFG1_OTG_CLK_EN);
 146         tmp = rt305x_sysctl_get(SYSCTL_RSTCTRL);
 147         rt305x_sysctl_set(SYSCTL_RSTCTRL, tmp | SYSCTL_RSTCTRL_OTG);
 148         DELAY(100);
 149         /*
 150          * Docs say that RSTCTRL bits for RT305x are W1C, so there should
 151          * be no need for the below, but who really knows?
 152          */
 153 //      rt305x_sysctl_set(SYSCTL_RSTCTRL, tmp & ~SYSCTL_RSTCTRL_OTG);
 154 //      DELAY(100);
 155
 156         err = dwc_otg_init(sc);
 157         if (err) printf("dotg_init fail\n");
 158         if (!err) {
 159                 err = device_probe_and_attach(sc->sc_bus.bdev);
 160                 if (err) printf("device_probe_and_attach fail %d\n", err);
 161         }
 162         if (err) {
 163                 goto error;
 164         }
 165         return (0);
 166
 167 error:
 168         dotg_obio_detach(dev);
 169         return (ENXIO);
 170 }
 171
 172 static int
 173 dotg_obio_detach(device_t dev)
 174 {
 175         struct dwc_otg_softc *sc = device_get_softc(dev);
 176         device_t bdev;
 177         int err;
 178
 179         if (sc->sc_bus.bdev) {
 180                 bdev = sc->sc_bus.bdev;
 181                 device_detach(bdev);
 182                 device_delete_child(dev, bdev);
 183         }
 184         /* during module unload there are lots of children leftover */
 185         device_delete_children(dev);
 186
 187         if (sc->sc_irq_res && sc->sc_intr_hdl) {
 188                 /*
 189                  * only call dotg_obio_uninit() after dotg_obio_init()
 190                  */
 191                 dwc_otg_uninit(sc);
 192
 193                 /* Stop OTG clock */
 194                 rt305x_sysctl_set(SYSCTL_CLKCFG1,
 195                     rt305x_sysctl_get(SYSCTL_CLKCFG1) &
 196                     ~SYSCTL_CLKCFG1_OTG_CLK_EN);
 197
 198                 err = bus_teardown_intr(dev, sc->sc_irq_res,
 199                     sc->sc_intr_hdl);
 200                 sc->sc_intr_hdl = NULL;
 201         }
 202         if (sc->sc_irq_res) {
 203                 bus_release_resource(dev, SYS_RES_IRQ, 0,
 204                     sc->sc_irq_res);
 205                 sc->sc_irq_res = NULL;
 206         }
 207         if (sc->sc_io_res) {
 208                 bus_release_resource(dev, SYS_RES_MEMORY, 0,
 209                     sc->sc_io_res);
 210                 sc->sc_io_res = NULL;
 211         }
 212         usb_bus_mem_free_all(&sc->sc_bus, NULL);
 213
 214         return (0);
 215 }
 216
 217 static device_method_t dotg_obio_methods[] = {
 218         /* Device interface */
 219         DEVMETHOD(device_probe, dotg_obio_probe),
 220         DEVMETHOD(device_attach, dotg_obio_attach),
 221         DEVMETHOD(device_detach, dotg_obio_detach),
 222         DEVMETHOD(device_suspend, bus_generic_suspend),
 223         DEVMETHOD(device_resume, bus_generic_resume),
 224         DEVMETHOD(device_shutdown, bus_generic_shutdown),
 225
 226         DEVMETHOD_END
 227 };
 228
 229 static driver_t dotg_obio_driver = {
 230         .name = "dwcotg",
 231         .methods = dotg_obio_methods,
 232         .size = sizeof(struct dwc_otg_softc),
 233 };
 234
 235 static devclass_t dotg_obio_devclass;
 236
 237 DRIVER_MODULE(dwcotg, obio, dotg_obio_driver, dotg_obio_devclass, 0, 0);