uhci_pci.c revision 1.17
1/* $NetBSD: uhci_pci.c,v 1.17 2000/09/06 00:17:23 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#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(struct device *, struct cfdata *, void *); 60void uhci_pci_attach(struct device *, struct device *, void *); 61int uhci_pci_detach(device_ptr_t, int); 62 63struct uhci_pci_softc { 64 uhci_softc_t sc; 65 pci_chipset_tag_t sc_pc; 66 pcitag_t sc_tag; 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(struct device *parent, struct cfdata *match, void *aux) 77{ 78 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 79 80 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 81 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 82 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_UHCI) 83 return (1); 84 85 return (0); 86} 87 88void 89uhci_pci_attach(struct device *parent, struct device *self, void *aux) 90{ 91 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 92 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 93 pci_chipset_tag_t pc = pa->pa_pc; 94 pcitag_t tag = pa->pa_tag; 95 char const *intrstr; 96 pci_intr_handle_t ih; 97 pcireg_t csr, legsup; 98 char *vendor; 99 char *devname = sc->sc.sc_bus.bdev.dv_xname; 100 char devinfo[256]; 101 usbd_status r; 102 103 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 104 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 105 106 /* Map I/O registers */ 107 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 108 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 109 printf("%s: can't map i/o space\n", devname); 110 return; 111 } 112 113 /* Disable interrupts, so we don't get any spurious ones. */ 114 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 115 116 sc->sc_pc = pc; 117 sc->sc_tag = tag; 118 sc->sc.sc_bus.dmatag = pa->pa_dmat; 119 120 /* Enable the device. */ 121 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 122 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 123 csr | PCI_COMMAND_MASTER_ENABLE); 124 125 /* Map and establish the interrupt. */ 126 if (pci_intr_map(pc, pa->pa_intrtag, pa->pa_intrpin, 127 pa->pa_intrline, &ih)) { 128 printf("%s: couldn't map interrupt\n", devname); 129 return; 130 } 131 intrstr = pci_intr_string(pc, ih); 132 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc); 133 if (sc->sc_ih == NULL) { 134 printf("%s: couldn't establish interrupt", devname); 135 if (intrstr != NULL) 136 printf(" at %s", intrstr); 137 printf("\n"); 138 return; 139 } 140 printf("%s: interrupting at %s\n", devname, intrstr); 141 142 /* Verify that the PIRQD enable bit is set, some BIOS's don't do that*/ 143 legsup = pci_conf_read(pc, tag, PCI_LEGSUP); 144 if (!(legsup & PCI_LEGSUP_USBPIRQDEN)) { 145 legsup = PCI_LEGSUP_USBPIRQDEN; 146 pci_conf_write(pc, tag, PCI_LEGSUP, legsup); 147 } 148 149 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 150 case PCI_USBREV_PRE_1_0: 151 sc->sc.sc_bus.usbrev = USBREV_PRE_1_0; 152 break; 153 case PCI_USBREV_1_0: 154 sc->sc.sc_bus.usbrev = USBREV_1_0; 155 break; 156 case PCI_USBREV_1_1: 157 sc->sc.sc_bus.usbrev = USBREV_1_1; 158 break; 159 default: 160 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 161 break; 162 } 163 164 /* Figure out vendor for root hub descriptor. */ 165 vendor = pci_findvendor(pa->pa_id); 166 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 167 if (vendor) 168 strncpy(sc->sc.sc_vendor, vendor, 169 sizeof(sc->sc.sc_vendor) - 1); 170 else 171 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 172 PCI_VENDOR(pa->pa_id)); 173 174 r = uhci_init(&sc->sc); 175 if (r != USBD_NORMAL_COMPLETION) { 176 printf("%s: init failed, error=%d\n", devname, r); 177 return; 178 } 179 180 /* Attach usb device. */ 181 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 182 usbctlprint); 183} 184 185int 186uhci_pci_detach(device_ptr_t self, int flags) 187{ 188 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 189 int rv; 190 191 rv = uhci_detach(&sc->sc, flags); 192 if (rv) 193 return (rv); 194 if (sc->sc_ih != NULL) { 195 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 196 sc->sc_ih = NULL; 197 } 198 if (sc->sc.sc_size) { 199 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 200 sc->sc.sc_size = 0; 201 } 202 return (0); 203} 204