1 /* $OpenBSD: ohci_pci.c,v 1.33 2008/06/26 05:42:17 ray Exp $ */ 2 /* $NetBSD: ohci_pci.c,v 1.23 2002/10/02 16:51:47 thorpej 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 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * USB Open Host Controller driver. 36 * 37 * OHCI spec: http://www.intel.com/design/usb/ohci11d.pdf 38 * USB spec: http://www.teleport.com/cgi-bin/mailmerge.cgi/~usb/cgiform.tpl 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/proc.h> 46 #include <sys/queue.h> 47 48 #include <machine/bus.h> 49 50 #include <dev/pci/pcivar.h> 51 52 #include <dev/usb/usb.h> 53 #include <dev/usb/usbdi.h> 54 #include <dev/usb/usbdivar.h> 55 #include <dev/usb/usb_mem.h> 56 57 #include <dev/usb/ohcireg.h> 58 #include <dev/usb/ohcivar.h> 59 60 int ohci_pci_match(struct device *, void *, void *); 61 void ohci_pci_attach(struct device *, struct device *, void *); 62 void ohci_pci_attach_deferred(struct device *); 63 int ohci_pci_detach(struct device *, int); 64 65 struct ohci_pci_softc { 66 ohci_softc_t sc; 67 pci_chipset_tag_t sc_pc; 68 void *sc_ih; /* interrupt vectoring */ 69 }; 70 71 struct cfattach ohci_pci_ca = { 72 sizeof(struct ohci_pci_softc), ohci_pci_match, ohci_pci_attach, 73 ohci_pci_detach, ohci_activate 74 }; 75 76 int 77 ohci_pci_match(struct device *parent, void *match, void *aux) 78 { 79 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 80 81 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 82 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 83 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI) 84 return (1); 85 86 return (0); 87 } 88 89 void 90 ohci_pci_attach(struct device *parent, struct device *self, void *aux) 91 { 92 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 93 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 94 pci_chipset_tag_t pc = pa->pa_pc; 95 char const *intrstr; 96 pci_intr_handle_t ih; 97 int s; 98 const char *vendor; 99 char *devname = sc->sc.sc_bus.bdev.dv_xname; 100 101 /* Map I/O registers */ 102 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 103 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size, 0)) { 104 printf(": can't map mem space\n"); 105 return; 106 } 107 108 /* Record what interrupts were enabled by SMM/BIOS. */ 109 sc->sc.sc_intre = bus_space_read_4(sc->sc.iot, sc->sc.ioh, 110 OHCI_INTERRUPT_ENABLE); 111 112 /* Disable interrupts, so we don't get any spurious ones. */ 113 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 114 OHCI_MIE); 115 116 sc->sc_pc = pc; 117 sc->sc.sc_bus.dmatag = pa->pa_dmat; 118 119 bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size, 120 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); 121 bus_space_write_4(sc->sc.iot, sc->sc.ioh, 122 OHCI_INTERRUPT_DISABLE, OHCI_MIE); 123 124 s = splusb(); 125 /* Map and establish the interrupt. */ 126 if (pci_intr_map(pa, &ih)) { 127 printf(": couldn't map interrupt\n"); 128 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 129 splx(s); 130 return; 131 } 132 133 intrstr = pci_intr_string(pc, ih); 134 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc, devname); 135 if (sc->sc_ih == NULL) { 136 printf(": couldn't establish interrupt"); 137 if (intrstr != NULL) 138 printf(" at %s", intrstr); 139 printf("\n"); 140 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 141 splx(s); 142 return; 143 } 144 printf(": %s", intrstr); 145 146 /* Figure out vendor for root hub descriptor. */ 147 vendor = pci_findvendor(pa->pa_id); 148 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 149 if (vendor) 150 strlcpy(sc->sc.sc_vendor, vendor, sizeof (sc->sc.sc_vendor)); 151 else 152 snprintf(sc->sc.sc_vendor, sizeof (sc->sc.sc_vendor), 153 "vendor 0x%04x", PCI_VENDOR(pa->pa_id)); 154 155 /* Display revision and perform legacy emulation handover. */ 156 if (ohci_checkrev(&sc->sc) != USBD_NORMAL_COMPLETION || 157 ohci_handover(&sc->sc) != USBD_NORMAL_COMPLETION) { 158 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 159 splx(s); 160 return; 161 } 162 163 /* Ignore interrupts for now */ 164 sc->sc.sc_dying = 1; 165 166 config_defer(self, ohci_pci_attach_deferred); 167 168 splx(s); 169 170 return; 171 } 172 173 void 174 ohci_pci_attach_deferred(struct device *self) 175 { 176 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 177 usbd_status r; 178 int s; 179 180 s = splusb(); 181 182 sc->sc.sc_dying = 0; 183 184 r = ohci_init(&sc->sc); 185 if (r != USBD_NORMAL_COMPLETION) { 186 printf("%s: init failed, error=%d\n", 187 sc->sc.sc_bus.bdev.dv_xname, r); 188 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 189 splx(s); 190 return; 191 } 192 193 sc->sc.sc_powerhook = powerhook_establish(ohci_power, &sc->sc); 194 if (sc->sc.sc_powerhook == NULL) 195 printf("%s: unable to establish powerhook\n", 196 sc->sc.sc_bus.bdev.dv_xname); 197 198 splx(s); 199 200 /* Attach usb device. */ 201 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 202 usbctlprint); 203 } 204 205 int 206 ohci_pci_detach(struct device *self, int flags) 207 { 208 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 209 int rv; 210 211 rv = ohci_detach(&sc->sc, flags); 212 if (rv) 213 return (rv); 214 215 if (sc->sc.sc_powerhook != NULL) 216 powerhook_disestablish(sc->sc.sc_powerhook); 217 218 if (sc->sc_ih != NULL) { 219 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 220 sc->sc_ih = NULL; 221 } 222 if (sc->sc.sc_size) { 223 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 224 sc->sc.sc_size = 0; 225 } 226 return (0); 227 } 228