ohci_pci.c revision 1.16
1/* $NetBSD: ohci_pci.c,v 1.16 2000/04/27 15:26:46 augustss Exp $ */ 2 3/* 4 * Copyright (c) 1998 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) at 9 * Carlstedt Research & Technology. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40/* 41 * USB Open Host Controller driver. 42 * 43 * OHCI spec: http://www.intel.com/design/usb/ohci11d.pdf 44 * USB spec: http://www.teleport.com/cgi-bin/mailmerge.cgi/~usb/cgiform.tpl 45 */ 46 47#include <sys/param.h> 48#include <sys/systm.h> 49#include <sys/kernel.h> 50#include <sys/device.h> 51#include <sys/proc.h> 52#include <sys/queue.h> 53 54#include <machine/bus.h> 55 56#include <dev/pci/pcivar.h> 57 58#include <dev/usb/usb.h> 59#include <dev/usb/usbdi.h> 60#include <dev/usb/usbdivar.h> 61#include <dev/usb/usb_mem.h> 62 63#include <dev/usb/ohcireg.h> 64#include <dev/usb/ohcivar.h> 65 66int ohci_pci_match __P((struct device *, struct cfdata *, void *)); 67void ohci_pci_attach __P((struct device *, struct device *, void *)); 68int ohci_pci_detach __P((device_ptr_t, int)); 69 70struct ohci_pci_softc { 71 ohci_softc_t sc; 72 pci_chipset_tag_t sc_pc; 73 void *sc_ih; /* interrupt vectoring */ 74}; 75 76struct cfattach ohci_pci_ca = { 77 sizeof(struct ohci_pci_softc), ohci_pci_match, ohci_pci_attach, 78 ohci_pci_detach, ohci_activate 79}; 80 81int 82ohci_pci_match(parent, match, aux) 83 struct device *parent; 84 struct cfdata *match; 85 void *aux; 86{ 87 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 88 89 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 90 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 91 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI) 92 return (1); 93 94 return (0); 95} 96 97void 98ohci_pci_attach(parent, self, aux) 99 struct device *parent; 100 struct device *self; 101 void *aux; 102{ 103 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 104 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 105 pci_chipset_tag_t pc = pa->pa_pc; 106 char const *intrstr; 107 pci_intr_handle_t ih; 108 pcireg_t csr; 109 char devinfo[256]; 110 usbd_status r; 111 char *vendor; 112 char *devname = sc->sc.sc_bus.bdev.dv_xname; 113 114 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 115 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 116 117 /* Map I/O registers */ 118 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 119 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 120 printf("%s: can't map mem space\n", devname); 121 return; 122 } 123 124 /* Disable interrupts, so we don't get any spurious ones. */ 125 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 126 OHCI_ALL_INTRS); 127 128 sc->sc_pc = pc; 129 sc->sc.sc_bus.dmatag = pa->pa_dmat; 130 131 /* Enable the device. */ 132 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 133 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 134 csr | PCI_COMMAND_MASTER_ENABLE); 135 136 /* Map and establish the interrupt. */ 137 if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, 138 pa->pa_intrline, &ih)) { 139 printf("%s: couldn't map interrupt\n", devname); 140 return; 141 } 142 intrstr = pci_intr_string(pc, ih); 143 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc); 144 if (sc->sc_ih == NULL) { 145 printf("%s: couldn't establish interrupt", devname); 146 if (intrstr != NULL) 147 printf(" at %s", intrstr); 148 printf("\n"); 149 return; 150 } 151 printf("%s: interrupting at %s\n", devname, intrstr); 152 153 /* Figure out vendor for root hub descriptor. */ 154 vendor = pci_findvendor(pa->pa_id); 155 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 156 if (vendor) 157 strncpy(sc->sc.sc_vendor, vendor, 158 sizeof(sc->sc.sc_vendor) - 1); 159 else 160 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 161 PCI_VENDOR(pa->pa_id)); 162 163 r = ohci_init(&sc->sc); 164 if (r != USBD_NORMAL_COMPLETION) { 165 printf("%s: init failed, error=%d\n", devname, r); 166 return; 167 } 168 169 /* Attach usb device. */ 170 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 171 usbctlprint); 172} 173 174int 175ohci_pci_detach(self, flags) 176 device_ptr_t self; 177 int flags; 178{ 179 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 180 int rv; 181 182 rv = ohci_detach(&sc->sc, flags); 183 if (rv) 184 return (rv); 185 if (sc->sc_ih != NULL) { 186 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 187 sc->sc_ih = NULL; 188 } 189 if (sc->sc.sc_size) { 190 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 191 sc->sc.sc_size = 0; 192 } 193 return (0); 194} 195