ohci_aubus.c revision 1.4
1 /* $NetBSD: ohci_aubus.c,v 1.4 2003/10/18 04:34:30 simonb Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 1999, 2000, 2002, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Herb Peyerl of Middle Digital Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ohci_aubus.c,v 1.4 2003/10/18 04:34:30 simonb Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/device.h> 45 46 #include <machine/bus.h> 47 48 #include <mips/alchemy/include/aureg.h> 49 #include <mips/alchemy/include/auvar.h> 50 #include <mips/alchemy/include/aubusvar.h> 51 52 #include <evbmips/alchemy/pb1000reg.h> 53 #include <evbmips/alchemy/pb1000_obiovar.h> 54 55 #include <dev/usb/usb.h> 56 #include <dev/usb/usbdi.h> 57 #include <dev/usb/usbdivar.h> 58 #include <dev/usb/usb_mem.h> 59 60 #include <dev/usb/ohcireg.h> 61 #include <dev/usb/ohcivar.h> 62 63 64 static int ohci_aubus_match(struct device *, struct cfdata *, void *); 65 static void ohci_aubus_attach(struct device *, struct device *, void *); 66 67 CFATTACH_DECL(ohci_aubus, sizeof (ohci_softc_t), 68 ohci_aubus_match, ohci_aubus_attach, NULL, NULL); 69 70 struct aubus_ohci_softc { 71 ohci_softc_t sc; 72 void *sc_ih; 73 }; 74 75 int 76 ohci_aubus_match(struct device *parent, struct cfdata *match, void *aux) 77 { 78 struct aubus_attach_args *aa = aux; 79 80 if (strcmp(aa->aa_name, match->cf_name) == 0) 81 return (1); 82 83 return (0); 84 } 85 86 void 87 ohci_aubus_attach(struct device *parent, struct device *self, void *aux) 88 { 89 struct aubus_ohci_softc *sc = (struct aubus_ohci_softc *)self; 90 usbd_status r; 91 uint32_t x, tmp; 92 struct aubus_attach_args *aa = aux; 93 94 r = 0; 95 96 sc->sc.sc_size = USBH_SIZE; 97 sc->sc.iot = aa->aa_st; 98 sc->sc.sc_bus.dmatag = (bus_dma_tag_t)aa->aa_dt; 99 100 if (bus_space_map(sc->sc.iot, USBH_BASE, USBH_SIZE, 0, &sc->sc.ioh)) { 101 printf("%s: Unable to map USBH registers\n", 102 sc->sc.sc_bus.bdev.dv_xname); 103 return; 104 } 105 /* 106 * Enable the USB Host controller here. 107 * As per 7.2 in the Au1500 manual: 108 * 109 * (1) Set CE bit to enable clocks. 110 * (2) Set E to enable OHCI 111 * (3) Clear HCFS in OHCI_CONTROL. 112 * (4) Wait for RD bit to be set. 113 */ 114 x = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBH_ENABLE); 115 x |= UE_CE; 116 bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBH_ENABLE, x); 117 delay(10); 118 x |= UE_E; 119 #ifdef __MIPSEB__ 120 x |= UE_BE; 121 #endif 122 bus_space_write_4(sc->sc.iot, sc->sc.ioh, USBH_ENABLE, x); 123 delay(10); 124 x = bus_space_read_4(sc->sc.iot, sc->sc.ioh, OHCI_CONTROL); 125 x &= ~(OHCI_HCFS_MASK); 126 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_CONTROL, x); 127 delay(10); 128 /* Need to read USBH_ENABLE twice in succession according to 129 * au1500 Errata #7. 130 */ 131 for (x = 100; x; x--) { 132 bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBH_ENABLE); 133 tmp = bus_space_read_4(sc->sc.iot, sc->sc.ioh, USBH_ENABLE); 134 if (tmp&UE_RD) 135 break; 136 delay(1000); 137 } 138 printf(": Au1X00 OHCI\n"); 139 140 /* Disable OHCI interrupts */ 141 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 142 OHCI_ALL_INTRS); 143 /* hook interrupt */ 144 sc->sc_ih = au_intr_establish(aa->aa_irq[0], 0, IPL_USB, IST_LEVEL_LOW, 145 ohci_intr, sc); 146 if (sc->sc_ih == NULL) { 147 printf("%s: couldn't establish interrupt\n", 148 sc->sc.sc_bus.bdev.dv_xname); 149 } 150 151 if (x) 152 r = ohci_init(&sc->sc); 153 if (r != USBD_NORMAL_COMPLETION) { 154 printf("%s: init failed, error=%d\n", 155 sc->sc.sc_bus.bdev.dv_xname, r); 156 return; 157 } 158 159 /* Attach USB device */ 160 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 161 usbctlprint); 162 163 } 164
Indexes created Sun Oct 19 22:09:57 GMT 2025