1 /* $NetBSD: uhci_pci.c,v 1.24 2002/10/02 16:51:58 thorpej 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/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: uhci_pci.c,v 1.24 2002/10/02 16:51:58 thorpej Exp $"); 42 43 #include "ehci.h" 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/device.h> 49 #include <sys/proc.h> 50 #include <sys/queue.h> 51 52 #include <machine/bus.h> 53 54 #include <dev/pci/pcivar.h> 55 #include <dev/pci/usb_pci.h> 56 57 #include <dev/usb/usb.h> 58 #include <dev/usb/usbdi.h> 59 #include <dev/usb/usbdivar.h> 60 #include <dev/usb/usb_mem.h> 61 62 #include <dev/usb/uhcireg.h> 63 #include <dev/usb/uhcivar.h> 64 65 int uhci_pci_match(struct device *, struct cfdata *, void *); 66 void uhci_pci_attach(struct device *, struct device *, void *); 67 int uhci_pci_detach(device_ptr_t, int); 68 69 struct uhci_pci_softc { 70 uhci_softc_t sc; 71 #if NEHCI > 0 72 struct usb_pci sc_pci; 73 #endif 74 pci_chipset_tag_t sc_pc; 75 pcitag_t sc_tag; 76 void *sc_ih; /* interrupt vectoring */ 77 }; 78 79 CFATTACH_DECL(uhci_pci, sizeof(struct uhci_pci_softc), 80 uhci_pci_match, uhci_pci_attach, uhci_pci_detach, uhci_activate); 81 82 int 83 uhci_pci_match(struct device *parent, struct cfdata *match, void *aux) 84 { 85 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 86 87 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 88 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 89 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_UHCI) 90 return (1); 91 92 return (0); 93 } 94 95 void 96 uhci_pci_attach(struct device *parent, struct device *self, void *aux) 97 { 98 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 99 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 100 pci_chipset_tag_t pc = pa->pa_pc; 101 pcitag_t tag = pa->pa_tag; 102 char const *intrstr; 103 pci_intr_handle_t ih; 104 pcireg_t csr; 105 char *vendor; 106 char *devname = sc->sc.sc_bus.bdev.dv_xname; 107 char devinfo[256]; 108 usbd_status r; 109 110 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 111 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 112 113 /* Map I/O registers */ 114 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 115 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 116 printf("%s: can't map i/o space\n", devname); 117 return; 118 } 119 120 /* Disable interrupts, so we don't get any spurious ones. */ 121 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 122 123 sc->sc_pc = pc; 124 sc->sc_tag = tag; 125 sc->sc.sc_bus.dmatag = pa->pa_dmat; 126 127 /* Enable the device. */ 128 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 129 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 130 csr | PCI_COMMAND_MASTER_ENABLE); 131 132 /* Map and establish the interrupt. */ 133 if (pci_intr_map(pa, &ih)) { 134 printf("%s: couldn't map interrupt\n", devname); 135 return; 136 } 137 intrstr = pci_intr_string(pc, ih); 138 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc); 139 if (sc->sc_ih == NULL) { 140 printf("%s: couldn't establish interrupt", devname); 141 if (intrstr != NULL) 142 printf(" at %s", intrstr); 143 printf("\n"); 144 return; 145 } 146 printf("%s: interrupting at %s\n", devname, intrstr); 147 148 /* Set LEGSUP register to its default value. */ 149 pci_conf_write(pc, tag, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN); 150 151 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 152 case PCI_USBREV_PRE_1_0: 153 sc->sc.sc_bus.usbrev = USBREV_PRE_1_0; 154 break; 155 case PCI_USBREV_1_0: 156 sc->sc.sc_bus.usbrev = USBREV_1_0; 157 break; 158 case PCI_USBREV_1_1: 159 sc->sc.sc_bus.usbrev = USBREV_1_1; 160 break; 161 default: 162 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 163 break; 164 } 165 166 /* Figure out vendor for root hub descriptor. */ 167 vendor = pci_findvendor(pa->pa_id); 168 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 169 if (vendor) 170 strncpy(sc->sc.sc_vendor, vendor, 171 sizeof(sc->sc.sc_vendor) - 1); 172 else 173 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 174 PCI_VENDOR(pa->pa_id)); 175 176 r = uhci_init(&sc->sc); 177 if (r != USBD_NORMAL_COMPLETION) { 178 printf("%s: init failed, error=%d\n", devname, r); 179 return; 180 } 181 182 #if NEHCI > 0 183 usb_pci_add(&sc->sc_pci, pa, &sc->sc.sc_bus); 184 #endif 185 186 /* Attach usb device. */ 187 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 188 usbctlprint); 189 } 190 191 int 192 uhci_pci_detach(device_ptr_t self, int flags) 193 { 194 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 195 int rv; 196 197 rv = uhci_detach(&sc->sc, flags); 198 if (rv) 199 return (rv); 200 if (sc->sc_ih != NULL) { 201 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 202 sc->sc_ih = NULL; 203 } 204 if (sc->sc.sc_size) { 205 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 206 sc->sc.sc_size = 0; 207 } 208 #if NEHCI > 0 209 usb_pci_rem(&sc->sc_pci); 210 #endif 211 return (0); 212 } 213