1 /* $NetBSD: ralink_ohci.c,v 1.3 2014/04/29 17:10:07 matt Exp $ */ 2 /*- 3 * Copyright (c) 2011 CradlePoint Technology, Inc. 4 * All rights reserved. 5 * 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY CRADLEPOINT TECHNOLOGY, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* ralink_ohci.c -- Ralink OHCI USB Driver */ 30 31 #include "ehci.h" 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: ralink_ohci.c,v 1.3 2014/04/29 17:10:07 matt Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 39 #include <dev/usb/usb.h> 40 #include <dev/usb/usbdi.h> 41 #include <dev/usb/usbdivar.h> 42 #include <dev/usb/usb_mem.h> 43 44 #include <dev/usb/ohcireg.h> 45 #include <dev/usb/ohcivar.h> 46 47 #include <mips/ralink/ralink_var.h> 48 #include <mips/ralink/ralink_reg.h> 49 #include <mips/ralink/ralink_usbhcvar.h> 50 51 #define OREAD4(sc, a) bus_space_read_4((sc)->iot, (sc)->ioh, (a)) 52 #define OWRITE4(sc, a, x) bus_space_write_4((sc)->iot, (sc)->ioh, (a), (x)) 53 54 struct ralink_ohci_softc { 55 struct ohci_softc sc_ohci; 56 #if NEHCI > 0 57 struct ralink_usb_hc sc_hc; 58 #endif 59 void *sc_ih; 60 }; 61 62 static int ralink_ohci_match(device_t, cfdata_t, void *); 63 static void ralink_ohci_attach(device_t, device_t, void *); 64 static int ralink_ohci_detach(device_t, int); 65 66 CFATTACH_DECL2_NEW(ralink_ohci, sizeof(struct ralink_ohci_softc), 67 ralink_ohci_match, ralink_ohci_attach, ralink_ohci_detach, 68 ohci_activate, NULL, ohci_childdet); 69 70 /* 71 * ralink_ohci_match 72 */ 73 static int 74 ralink_ohci_match(device_t parent, cfdata_t cf, void *aux) 75 { 76 return 1; 77 } 78 79 /* 80 * ralink_ohci_attach 81 */ 82 static void 83 ralink_ohci_attach(device_t parent, device_t self, void *aux) 84 { 85 struct ralink_ohci_softc * const sc = device_private(self); 86 const struct mainbus_attach_args * const ma = aux; 87 usbd_status status; 88 int error; 89 #ifdef RALINK_OHCI_DEBUG 90 const char * const devname = device_xname(self); 91 #endif 92 93 aprint_naive(": OHCI USB controller\n"); 94 aprint_normal(": OHCI USB controller\n"); 95 96 sc->sc_ohci.sc_dev = self; 97 sc->sc_ohci.sc_bus.hci_private = sc; 98 sc->sc_ohci.iot = ma->ma_memt; 99 sc->sc_ohci.sc_bus.dmatag = ma->ma_dmat; 100 101 /* Map I/O registers */ 102 if ((error = bus_space_map(sc->sc_ohci.iot, RA_USB_OHCI_BASE, 103 RA_USB_BLOCK_SIZE, 0, &sc->sc_ohci.ioh)) != 0) { 104 aprint_error_dev(self, "can't map OHCI registers, " 105 "error=%d\n", error); 106 return; 107 } 108 109 sc->sc_ohci.sc_size = RA_USB_BLOCK_SIZE; 110 111 #ifdef RALINK_OHCI_DEBUG 112 printf("%s sc: %p ma: %p\n", devname, sc, ma); 113 printf("%s memt: %p dmat: %p\n", devname, ma->ma_memt, ma->ma_dmat); 114 115 printf("%s: OHCI HcRevision=0x%x\n", devname, 116 OREAD4(&sc->sc_ohci, OHCI_REVISION)); 117 printf("%s: OHCI HcControl=0x%x\n", devname, 118 OREAD4(&sc->sc_ohci, OHCI_CONTROL)); 119 printf("%s: OHCI HcCommandStatus=0x%x\n", devname, 120 OREAD4(&sc->sc_ohci, OHCI_COMMAND_STATUS)); 121 printf("%s: OHCI HcInterruptStatus=0x%x\n", devname, 122 OREAD4(&sc->sc_ohci, OHCI_INTERRUPT_STATUS)); 123 #endif 124 125 /* Disable OHCI interrupts. */ 126 OWRITE4(&sc->sc_ohci, OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS); 127 128 /* establish the MIPS level interrupt */ 129 sc->sc_ih = ra_intr_establish(RA_IRQ_USB, ohci_intr, sc, 0); 130 if (sc->sc_ih == NULL) { 131 aprint_error_dev(self, "unable to establish irq %d\n", 132 RA_IRQ_USB); 133 goto fail_0; 134 } 135 136 /* Set vendor for root hub descriptor. */ 137 sc->sc_ohci.sc_id_vendor = 0x1814; 138 strlcpy(sc->sc_ohci.sc_vendor, "Ralink", sizeof(sc->sc_ohci.sc_vendor)); 139 140 /* Initialize OHCI */ 141 status = ohci_init(&sc->sc_ohci); 142 if (status != USBD_NORMAL_COMPLETION) { 143 aprint_error_dev(self, "init failed, error=%d\n", status); 144 goto fail_0; 145 } 146 147 #if NEHCI > 0 148 ralink_usb_hc_add(&sc->sc_hc, self); 149 #endif 150 151 if (!pmf_device_register1(self, ohci_suspend, ohci_resume, 152 ohci_shutdown)) 153 aprint_error_dev(self, "couldn't establish power handler\n"); 154 155 /* Attach usb device. */ 156 sc->sc_ohci.sc_child = config_found(self, &sc->sc_ohci.sc_bus, 157 usbctlprint); 158 159 return; 160 161 fail_0: 162 bus_space_unmap(sc->sc_ohci.iot, sc->sc_ohci.ioh, sc->sc_ohci.sc_size); 163 sc->sc_ohci.sc_size = 0; 164 } 165 166 static int 167 ralink_ohci_detach(device_t self, int flags) 168 { 169 struct ralink_ohci_softc *sc = device_private(self); 170 int rv; 171 172 pmf_device_deregister(self); 173 174 rv = ohci_detach(&sc->sc_ohci, flags); 175 if (rv != 0) 176 return rv; 177 178 if (sc->sc_ih != NULL) { 179 ra_intr_disestablish(sc->sc_ih); 180 sc->sc_ih = NULL; 181 } 182 183 if (sc->sc_ohci.sc_size == 0) { 184 bus_space_unmap(sc->sc_ohci.iot, sc->sc_ohci.ioh, 185 sc->sc_ohci.sc_size); 186 sc->sc_ohci.sc_size = 0; 187 } 188 189 #if NEHCI > 0 190 ralink_usb_hc_rem(&sc->sc_hc); 191 #endif 192 193 return 0; 194 } 195