1 /* $OpenBSD: ohci_pci.c,v 1.12 2001/06/13 07:43:35 deraadt Exp $ */ 2 /* $NetBSD: ohci_pci.c,v 1.9 1999/05/20 09:52:35 augustss Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart@augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * USB Open Host Controller driver. 43 * 44 * OHCI spec: http://www.intel.com/design/usb/ohci11d.pdf 45 * USB spec: http://www.teleport.com/cgi-bin/mailmerge.cgi/~usb/cgiform.tpl 46 */ 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/kernel.h> 51 #include <sys/device.h> 52 #include <sys/proc.h> 53 #include <sys/queue.h> 54 55 #include <machine/bus.h> 56 57 #include <dev/pci/pcivar.h> 58 59 #include <dev/usb/usb.h> 60 #include <dev/usb/usbdi.h> 61 #include <dev/usb/usbdivar.h> 62 #include <dev/usb/usb_mem.h> 63 64 #include <dev/usb/ohcireg.h> 65 #include <dev/usb/ohcivar.h> 66 67 int ohci_pci_match __P((struct device *, void *, void *)); 68 void ohci_pci_attach __P((struct device *, struct device *, void *)); 69 int ohci_pci_detach __P((device_ptr_t, int)); 70 71 struct ohci_pci_softc { 72 ohci_softc_t sc; 73 pci_chipset_tag_t sc_pc; 74 void *sc_ih; /* interrupt vectoring */ 75 }; 76 77 struct cfattach ohci_pci_ca = { 78 sizeof(struct ohci_pci_softc), ohci_pci_match, ohci_pci_attach, 79 ohci_pci_detach, ohci_activate 80 }; 81 82 int 83 ohci_pci_match(parent, match, aux) 84 struct device *parent; 85 void *match, *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 97 void 98 ohci_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 usbd_status r; 110 111 /* Map I/O registers */ 112 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 113 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size, 0)) { 114 printf(": can't map mem space\n"); 115 return; 116 } 117 118 /* Disable interrupts, so we don't get any spurious ones. */ 119 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 120 OHCI_ALL_INTRS); 121 122 sc->sc_pc = pc; 123 sc->sc.sc_bus.dmatag = pa->pa_dmat; 124 125 /* Enable the device. */ 126 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 127 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 128 csr | PCI_COMMAND_MASTER_ENABLE); 129 130 bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size, 131 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); 132 bus_space_write_4(sc->sc.iot, sc->sc.ioh, 133 OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS); 134 135 /* Map and establish the interrupt. */ 136 if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, 137 pa->pa_intrline, &ih)) { 138 printf(": couldn't map interrupt\n"); 139 return; 140 } 141 142 intrstr = pci_intr_string(pc, ih); 143 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc, 144 sc->sc.sc_bus.bdev.dv_xname); 145 if (sc->sc_ih == NULL) { 146 printf(": couldn't establish interrupt"); 147 if (intrstr != NULL) 148 printf(" at %s", intrstr); 149 printf("\n"); 150 return; 151 } 152 printf(": %s", intrstr); 153 154 r = ohci_init(&sc->sc); 155 if (r != USBD_NORMAL_COMPLETION) { 156 printf("%s: init failed, error=%d\n", 157 sc->sc.sc_bus.bdev.dv_xname, r); 158 return; 159 } 160 161 /* Attach usb device. */ 162 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 163 usbctlprint); 164 } 165 166 int 167 ohci_pci_detach(self, flags) 168 device_ptr_t self; 169 int flags; 170 { 171 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 172 int rv; 173 174 rv = ohci_detach(&sc->sc, flags); 175 if (rv) 176 return (rv); 177 if (sc->sc_ih != NULL) { 178 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 179 sc->sc_ih = NULL; 180 } 181 if (sc->sc.sc_size) { 182 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 183 sc->sc.sc_size = 0; 184 } 185 return (0); 186 } 187