sys/mips/rt305x/rt305x_ehci.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/ehci.h>
  63
  64 #include <mips/rt305x/rt305xreg.h>
  65 #include <mips/rt305x/rt305x_sysctlvar.h>
  66
  67 #define EHCI_HC_DEVSTR  "Ralink integrated USB 2.0 controller"
  68
  69 static device_probe_t ehci_obio_probe;
  70 static device_attach_t ehci_obio_attach;
  71 static device_detach_t ehci_obio_detach;
  72
  73 static int
  74 ehci_obio_probe(device_t self)
  75 {
  76         device_set_desc(self, EHCI_HC_DEVSTR);
  77
  78         return (BUS_PROBE_DEFAULT);
  79 }
  80
  81 static int
  82 ehci_obio_attach(device_t self)
  83 {
  84         ehci_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 = EHCI_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), &ehci_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, EHCI_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 *)ehci_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 = ehci_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         ehci_obio_detach(self);
 171         return (ENXIO);
 172 }
 173
 174 static int
 175 ehci_obio_detach(device_t self)
 176 {
 177         ehci_softc_t *sc = device_get_softc(self);
 178         device_t bdev;
 179         int err;
 180
 181         if (sc->sc_bus.bdev) {
 182                 bdev = sc->sc_bus.bdev;
 183                 device_detach(bdev);
 184                 device_delete_child(self, bdev);
 185         }
 186         /* during module unload there are lots of children leftover */
 187         device_delete_children(self);
 188
 189         if (sc->sc_irq_res && sc->sc_intr_hdl) {
 190                 /*
 191                  * only call ehci_detach() after ehci_init()
 192                  */
 193                 ehci_detach(sc);
 194
 195                 /* Stop EHCI clock */
 196                 rt305x_sysctl_set(SYSCTL_CLKCFG1,
 197                   rt305x_sysctl_get(SYSCTL_CLKCFG1) &
 198                   ~(SYSCTL_CLKCFG1_UPHY0_CLK_EN
 199 #ifdef MT7620
 200                     | SYSCTL_CLKCFG1_UPHY1_CLK_EN
 201 #endif
 202                 ));
 203
 204                 err = bus_teardown_intr(self, sc->sc_irq_res, sc->sc_intr_hdl);
 205                 if (err)
 206                         device_printf(self, "Could not tear down irq, %d\n",
 207                                 err);
 208                 sc->sc_intr_hdl = NULL;
 209         }
 210         if (sc->sc_irq_res) {
 211                 bus_release_resource(self, SYS_RES_IRQ, 0,
 212                     sc->sc_irq_res);
 213                 sc->sc_irq_res = NULL;
 214         }
 215         if (sc->sc_io_res) {
 216                 bus_release_resource(self, SYS_RES_MEMORY, 0,
 217                     sc->sc_io_res);
 218                 sc->sc_io_res = NULL;
 219         }
 220         usb_bus_mem_free_all(&sc->sc_bus, &ehci_iterate_hw_softc);
 221
 222         return (0);
 223 }
 224
 225 static device_method_t ehci_obio_methods[] = {
 226         /* Device interface */
 227         DEVMETHOD(device_probe, ehci_obio_probe),
 228         DEVMETHOD(device_attach, ehci_obio_attach),
 229         DEVMETHOD(device_detach, ehci_obio_detach),
 230         DEVMETHOD(device_suspend, bus_generic_suspend),
 231         DEVMETHOD(device_resume, bus_generic_resume),
 232         DEVMETHOD(device_shutdown, bus_generic_shutdown),
 233
 234         DEVMETHOD_END
 235 };
 236
 237 static driver_t ehci_obio_driver = {
 238         .name = "ehci",
 239         .methods = ehci_obio_methods,
 240         .size = sizeof(ehci_softc_t),
 241 };
 242
 243 static devclass_t ehci_obio_devclass;
 244
 245 DRIVER_MODULE(ehci, obio, ehci_obio_driver, ehci_obio_devclass, 0, 0);