1 /* $NetBSD: obio_ehci.c,v 1.2 2008/10/24 17:31:24 matt Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart@augustsson.net). 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: obio_ehci.c,v 1.2 2008/10/24 17:31:24 matt Exp $"); 34 35 #include "locators.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 #include <sys/proc.h> 42 #include <sys/queue.h> 43 44 #include <sys/bus.h> 45 46 #include <arm/gemini/gemini_reg.h> 47 #include <arm/gemini/gemini_obiovar.h> 48 49 #include <dev/pci/pcidevs.h> 50 51 #include <dev/usb/usb.h> 52 #include <dev/usb/usbdi.h> 53 #include <dev/usb/usbdivar.h> 54 #include <dev/usb/usb_mem.h> 55 56 #include <dev/usb/ehcireg.h> 57 #include <dev/usb/ehcivar.h> 58 59 #ifdef EHCI_DEBUG 60 #define DPRINTF(x) if (ehcidebug) printf x 61 extern int ehcidebug; 62 #else 63 #define DPRINTF(x) 64 #endif 65 66 #define EHCI_HCOTGDEV_INTR_STATUS 0xc0 67 #define EHCI_HCOTGDEV_INTR_MASK 0xc4 68 #define HC_INT 0x04 69 #define OTG_INT 0x02 70 #define DEV_INT 0x01 71 72 static int 73 ehci_obio_intr(void *arg) 74 { 75 struct ehci_softc * const sc = arg; 76 int rv = 0; 77 uint32_t v; 78 79 v = bus_space_read_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_STATUS); 80 bus_space_write_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_STATUS, v); 81 if (v & HC_INT) 82 rv = ehci_intr(sc); 83 return rv; 84 } 85 86 static int 87 ehci_obio_match(device_t parent, cfdata_t match, void *aux) 88 { 89 struct obio_attach_args * const obio = aux; 90 91 if (obio->obio_addr == GEMINI_USB0_BASE 92 || obio->obio_addr == GEMINI_USB1_BASE) 93 return 1; 94 95 return 0; 96 } 97 98 static void 99 ehci_obio_attach(device_t parent, device_t self, void *aux) 100 { 101 struct ehci_softc * const sc = device_private(self); 102 struct obio_attach_args * const obio = aux; 103 const char * const devname = device_xname(self); 104 usbd_status r; 105 106 sc->sc_dev = self; 107 sc->sc_bus.hci_private = sc; 108 sc->iot = obio->obio_iot; 109 110 aprint_naive(": EHCI USB controller\n"); 111 aprint_normal(": EHCI USB controller\n"); 112 113 /* Map I/O registers */ 114 if (bus_space_map(sc->iot, obio->obio_addr, obio->obio_size, 0, 115 &sc->ioh)) { 116 aprint_error("%s: can't map memory space\n", devname); 117 return; 118 } 119 120 sc->sc_bus.dmatag = obio->obio_dmat; 121 122 /* Disable interrupts, so we don't get any spurious ones. */ 123 sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH); 124 DPRINTF(("%s: offs=%d\n", devname, sc->sc_offs)); 125 EOWRITE2(sc, EHCI_USBINTR, 0); 126 bus_space_write_4(sc->iot, sc->ioh, EHCI_HCOTGDEV_INTR_MASK, 127 OTG_INT|DEV_INT); 128 129 if (obio->obio_intr != OBIOCF_INTR_DEFAULT) { 130 intr_establish(obio->obio_intr, IPL_USB, IST_LEVEL, 131 ehci_obio_intr, sc); 132 } 133 134 sc->sc_bus.usbrev = USBREV_2_0; 135 136 /* Figure out vendor for root hub descriptor. */ 137 sc->sc_id_vendor = PCI_VENDOR_FARADAY; 138 strlcpy(sc->sc_vendor, "SL351x", sizeof(sc->sc_vendor)); 139 140 r = ehci_init(sc); 141 if (r != USBD_NORMAL_COMPLETION) { 142 aprint_error("%s: init failed, error=%d\n", devname, r); 143 return; 144 } 145 146 /* Attach usb device. */ 147 sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint); 148 } 149 150 CFATTACH_DECL2_NEW(ehci_obio, sizeof(struct ehci_softc), 151 ehci_obio_match, ehci_obio_attach, NULL, NULL, NULL, ehci_childdet); 152