uhci_pci.c revision 1.13
1/* $NetBSD: uhci_pci.c,v 1.13 1999/11/20 00:57:08 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#include <sys/param.h> 41#include <sys/systm.h> 42#include <sys/kernel.h> 43#include <sys/device.h> 44#include <sys/proc.h> 45#include <sys/queue.h> 46 47#include <machine/bus.h> 48 49#include <dev/pci/pcivar.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/uhcireg.h> 57#include <dev/usb/uhcivar.h> 58 59int uhci_pci_match __P((struct device *, struct cfdata *, void *)); 60void uhci_pci_attach __P((struct device *, struct device *, void *)); 61int uhci_pci_detach __P((device_ptr_t, int)); 62 63struct uhci_pci_softc { 64 uhci_softc_t sc; 65 pci_chipset_tag_t sc_pc; 66 bus_size_t sc_size; 67 void *sc_ih; /* interrupt vectoring */ 68}; 69 70struct cfattach uhci_pci_ca = { 71 sizeof(struct uhci_pci_softc), uhci_pci_match, uhci_pci_attach, 72 uhci_pci_detach, uhci_activate 73}; 74 75int 76uhci_pci_match(parent, match, aux) 77 struct device *parent; 78 struct cfdata *match; 79 void *aux; 80{ 81 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 82 83 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 84 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 85 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_UHCI) 86 return (1); 87 88 return (0); 89} 90 91void 92uhci_pci_attach(parent, self, aux) 93 struct device *parent; 94 struct device *self; 95 void *aux; 96{ 97 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 98 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 99 pci_chipset_tag_t pc = pa->pa_pc; 100 char const *intrstr; 101 pci_intr_handle_t ih; 102 pcireg_t csr; 103 char *vendor; 104 char *devname = sc->sc.sc_bus.bdev.dv_xname; 105 char devinfo[256]; 106 usbd_status r; 107 108 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 109 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 110 111 /* Map I/O registers */ 112 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 113 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc_size)) { 114 printf("%s: can't map i/o space\n", devname); 115 return; 116 } 117 118 /* Disable interrupts, so we don't get any spurious ones. */ 119 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 120 121 sc->sc_pc = pc; 122 sc->sc.sc_bus.dmatag = pa->pa_dmat; 123 124 /* Enable the device. */ 125 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 126 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 127 csr | PCI_COMMAND_MASTER_ENABLE); 128 129 /* Map and establish the interrupt. */ 130 if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, 131 pa->pa_intrline, &ih)) { 132 printf("%s: couldn't map interrupt\n", devname); 133 return; 134 } 135 intrstr = pci_intr_string(pc, ih); 136 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc); 137 if (sc->sc_ih == NULL) { 138 printf("%s: couldn't establish interrupt", devname); 139 if (intrstr != NULL) 140 printf(" at %s", intrstr); 141 printf("\n"); 142 return; 143 } 144 printf("%s: interrupting at %s\n", devname, intrstr); 145 146 switch(pci_conf_read(pc, pa->pa_tag, PCI_USBREV) & PCI_USBREV_MASK) { 147 case PCI_USBREV_PRE_1_0: 148 sc->sc.sc_bus.usbrev = USBREV_PRE_1_0; 149 break; 150 case PCI_USBREV_1_0: 151 sc->sc.sc_bus.usbrev = USBREV_1_0; 152 break; 153 case PCI_USBREV_1_1: 154 sc->sc.sc_bus.usbrev = USBREV_1_1; 155 break; 156 default: 157 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 158 break; 159 } 160 161 /* Figure out vendor for root hub descriptor. */ 162 vendor = pci_findvendor(pa->pa_id); 163 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 164 if (vendor) 165 strncpy(sc->sc.sc_vendor, vendor, 166 sizeof(sc->sc.sc_vendor) - 1); 167 else 168 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 169 PCI_VENDOR(pa->pa_id)); 170 171 r = uhci_init(&sc->sc); 172 if (r != USBD_NORMAL_COMPLETION) { 173 printf("%s: init failed, error=%d\n", devname, r); 174 return; 175 } 176 177 /* Attach usb device. */ 178 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 179 usbctlprint); 180} 181 182int 183uhci_pci_detach(self, flags) 184 device_ptr_t self; 185 int flags; 186{ 187 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 188 int rv; 189 190 rv = uhci_detach(&sc->sc, flags); 191 if (rv) 192 return (rv); 193 if (sc->sc_ih) { 194 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 195 sc->sc_ih = 0; 196 } 197 if (sc->sc_size) { 198 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc_size); 199 sc->sc_size = 0; 200 } 201 return (0); 202} 203