uhci_pci.c revision 1.15
1/* $NetBSD: uhci_pci.c,v 1.15 2000/04/25 09:20:55 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 void *sc_ih; /* interrupt vectoring */ 67}; 68 69struct cfattach uhci_pci_ca = { 70 sizeof(struct uhci_pci_softc), uhci_pci_match, uhci_pci_attach, 71 uhci_pci_detach, uhci_activate 72}; 73 74int 75uhci_pci_match(parent, match, aux) 76 struct device *parent; 77 struct cfdata *match; 78 void *aux; 79{ 80 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 81 82 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 83 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 84 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_UHCI) 85 return (1); 86 87 return (0); 88} 89 90void 91uhci_pci_attach(parent, self, aux) 92 struct device *parent; 93 struct device *self; 94 void *aux; 95{ 96 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 97 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 98 pci_chipset_tag_t pc = pa->pa_pc; 99 char const *intrstr; 100 pci_intr_handle_t ih; 101 pcireg_t csr, legsup; 102 char *vendor; 103 char *devname = sc->sc.sc_bus.bdev.dv_xname; 104 char devinfo[256]; 105 usbd_status r; 106 107 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 108 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 109 110 /* Map I/O registers */ 111 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 112 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 113 printf("%s: can't map i/o space\n", devname); 114 return; 115 } 116 117 /* Disable interrupts, so we don't get any spurious ones. */ 118 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 119 120 sc->sc_pc = pc; 121 sc->sc.sc_bus.dmatag = pa->pa_dmat; 122 123 /* Enable the device. */ 124 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 125 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 126 csr | PCI_COMMAND_MASTER_ENABLE); 127 128 /* Map and establish the interrupt. */ 129 if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, 130 pa->pa_intrline, &ih)) { 131 printf("%s: couldn't map interrupt\n", devname); 132 return; 133 } 134 intrstr = pci_intr_string(pc, ih); 135 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc); 136 if (sc->sc_ih == NULL) { 137 printf("%s: couldn't establish interrupt", devname); 138 if (intrstr != NULL) 139 printf(" at %s", intrstr); 140 printf("\n"); 141 return; 142 } 143 printf("%s: interrupting at %s\n", devname, intrstr); 144 145 /* Verify that the PIRQD enable bit is set, some BIOS's don't do that*/ 146 legsup = pci_conf_read(pc, pa->pa_tag, PCI_LEGSUP); 147 if (!(legsup & PCI_LEGSUP_USBPIRQDEN)) { 148 legsup = PCI_LEGSUP_USBPIRQDEN; 149 pci_conf_write(pc, pa->pa_tag, PCI_LEGSUP, legsup); 150 } 151 152 switch(pci_conf_read(pc, pa->pa_tag, PCI_USBREV) & PCI_USBREV_MASK) { 153 case PCI_USBREV_PRE_1_0: 154 sc->sc.sc_bus.usbrev = USBREV_PRE_1_0; 155 break; 156 case PCI_USBREV_1_0: 157 sc->sc.sc_bus.usbrev = USBREV_1_0; 158 break; 159 case PCI_USBREV_1_1: 160 sc->sc.sc_bus.usbrev = USBREV_1_1; 161 break; 162 default: 163 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 164 break; 165 } 166 167 /* Figure out vendor for root hub descriptor. */ 168 vendor = pci_findvendor(pa->pa_id); 169 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 170 if (vendor) 171 strncpy(sc->sc.sc_vendor, vendor, 172 sizeof(sc->sc.sc_vendor) - 1); 173 else 174 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 175 PCI_VENDOR(pa->pa_id)); 176 177 r = uhci_init(&sc->sc); 178 if (r != USBD_NORMAL_COMPLETION) { 179 printf("%s: init failed, error=%d\n", devname, r); 180 return; 181 } 182 183 /* Attach usb device. */ 184 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 185 usbctlprint); 186} 187 188int 189uhci_pci_detach(self, flags) 190 device_ptr_t self; 191 int flags; 192{ 193 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 194 int rv; 195 196 rv = uhci_detach(&sc->sc, flags); 197 if (rv) 198 return (rv); 199 if (sc->sc_ih != NULL) { 200 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 201 sc->sc_ih = NULL; 202 } 203 if (sc->sc.sc_size) { 204 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 205 sc->sc.sc_size = 0; 206 } 207 return (0); 208} 209