ohci_pci.c revision 1.14
1/* $NetBSD: ohci_pci.c,v 1.14 1999/10/12 11:21:24 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 (augustss@carlstedt.se) 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 bus_size_t sc_size; 74 void *sc_ih; /* interrupt vectoring */ 75}; 76 77struct cfattach ohci_pci_ca = { 78 sizeof(struct ohci_pci_softc), ohci_pci_match, ohci_pci_attach, 79 ohci_pci_detach, ohci_activate 80}; 81 82int 83ohci_pci_match(parent, match, aux) 84 struct device *parent; 85 struct cfdata *match; 86 void *aux; 87{ 88 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 89 90 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 91 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 92 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI) 93 return (1); 94 95 return (0); 96} 97 98void 99ohci_pci_attach(parent, self, aux) 100 struct device *parent; 101 struct device *self; 102 void *aux; 103{ 104 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 105 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 106 pci_chipset_tag_t pc = pa->pa_pc; 107 char const *intrstr; 108 pci_intr_handle_t ih; 109 pcireg_t csr; 110 char devinfo[256]; 111 usbd_status r; 112 char *vendor; 113 char *devname = sc->sc.sc_bus.bdev.dv_xname; 114 115 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 116 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 117 118 /* Map I/O registers */ 119 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 120 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc_size)) { 121 printf("%s: can't map mem space\n", devname); 122 return; 123 } 124 125 /* Disable interrupts, so we don't get any spurious ones. */ 126 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 127 OHCI_ALL_INTRS); 128 129 sc->sc_pc = pc; 130 sc->sc.sc_bus.dmatag = pa->pa_dmat; 131 132 /* Enable the device. */ 133 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 134 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 135 csr | PCI_COMMAND_MASTER_ENABLE); 136 137 /* Map and establish the interrupt. */ 138 if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, 139 pa->pa_intrline, &ih)) { 140 printf("%s: couldn't map interrupt\n", devname); 141 return; 142 } 143 intrstr = pci_intr_string(pc, ih); 144 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc); 145 if (sc->sc_ih == NULL) { 146 printf("%s: couldn't establish interrupt", devname); 147 if (intrstr != NULL) 148 printf(" at %s", intrstr); 149 printf("\n"); 150 return; 151 } 152 printf("%s: interrupting at %s\n", devname, intrstr); 153 154 /* Figure out vendor for root hub descriptor. */ 155 vendor = pci_findvendor(pa->pa_id); 156 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 157 if (vendor) 158 strncpy(sc->sc.sc_vendor, vendor, 159 sizeof(sc->sc.sc_vendor) - 1); 160 else 161 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 162 PCI_VENDOR(pa->pa_id)); 163 164 r = ohci_init(&sc->sc); 165 if (r != USBD_NORMAL_COMPLETION) { 166 printf("%s: init failed, error=%d\n", devname, r); 167 return; 168 } 169 170 /* Attach usb device. */ 171 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 172 usbctlprint); 173} 174 175int 176ohci_pci_detach(self, flags) 177 device_ptr_t self; 178 int flags; 179{ 180 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 181 int rv; 182 183 rv = ohci_detach(&sc->sc, flags); 184 if (rv) 185 return (rv); 186 if (sc->sc_ih) { 187 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 188 sc->sc_ih = 0; 189 } 190 if (sc->sc_size) { 191 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc_size); 192 sc->sc_size = 0; 193 } 194 return (0); 195} 196