1#include <sys/cdefs.h> 2__FBSDID("$FreeBSD: stable/11/sys/mips/rt305x/rt305x_ehci.c 308401 2016-11-07 08:36:06Z hselasky $"); 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 69static device_probe_t ehci_obio_probe; 70static device_attach_t ehci_obio_attach; 71static device_detach_t ehci_obio_detach; 72 73static int 74ehci_obio_probe(device_t self) 75{ 76 device_set_desc(self, EHCI_HC_DEVSTR); 77 78 return (BUS_PROBE_DEFAULT); 79} 80 81static int 82ehci_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 169error: 170 ehci_obio_detach(self); 171 return (ENXIO); 172} 173 174static int 175ehci_obio_detach(device_t self) 176{ 177 ehci_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 ehci_detach() after ehci_init() 186 */ 187 ehci_detach(sc); 188 189 /* Stop EHCI 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, &ehci_iterate_hw_softc); 215 216 return (0); 217} 218 219static device_method_t ehci_obio_methods[] = { 220 /* Device interface */ 221 DEVMETHOD(device_probe, ehci_obio_probe), 222 DEVMETHOD(device_attach, ehci_obio_attach), 223 DEVMETHOD(device_detach, ehci_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 231static driver_t ehci_obio_driver = { 232 .name = "ehci", 233 .methods = ehci_obio_methods, 234 .size = sizeof(ehci_softc_t), 235}; 236 237static devclass_t ehci_obio_devclass; 238 239DRIVER_MODULE(ehci, obio, ehci_obio_driver, ehci_obio_devclass, 0, 0); 240