Annotation of sys/dev/pci/ohci_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: ohci_pci.c,v 1.32 2007/03/22 05:53:36 pascoe 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: * 3. All advertising materials mentioning features or use of this software
! 21: * must display the following acknowledgement:
! 22: * This product includes software developed by the NetBSD
! 23: * Foundation, Inc. and its contributors.
! 24: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40:
! 41: /*
! 42: * USB Open Host Controller driver.
! 43: *
! 44: * OHCI spec: http://www.intel.com/design/usb/ohci11d.pdf
! 45: * USB spec: http://www.teleport.com/cgi-bin/mailmerge.cgi/~usb/cgiform.tpl
! 46: */
! 47:
! 48: #include <sys/param.h>
! 49: #include <sys/systm.h>
! 50: #include <sys/kernel.h>
! 51: #include <sys/device.h>
! 52: #include <sys/proc.h>
! 53: #include <sys/queue.h>
! 54:
! 55: #include <machine/bus.h>
! 56:
! 57: #include <dev/pci/pcivar.h>
! 58:
! 59: #include <dev/usb/usb.h>
! 60: #include <dev/usb/usbdi.h>
! 61: #include <dev/usb/usbdivar.h>
! 62: #include <dev/usb/usb_mem.h>
! 63:
! 64: #include <dev/usb/ohcireg.h>
! 65: #include <dev/usb/ohcivar.h>
! 66:
! 67: int ohci_pci_match(struct device *, void *, void *);
! 68: void ohci_pci_attach(struct device *, struct device *, void *);
! 69: void ohci_pci_attach_deferred(struct device *);
! 70: int ohci_pci_detach(struct device *, int);
! 71:
! 72: struct ohci_pci_softc {
! 73: ohci_softc_t sc;
! 74: pci_chipset_tag_t sc_pc;
! 75: void *sc_ih; /* interrupt vectoring */
! 76: };
! 77:
! 78: struct cfattach ohci_pci_ca = {
! 79: sizeof(struct ohci_pci_softc), ohci_pci_match, ohci_pci_attach,
! 80: ohci_pci_detach, ohci_activate
! 81: };
! 82:
! 83: int
! 84: ohci_pci_match(struct device *parent, void *match, void *aux)
! 85: {
! 86: struct pci_attach_args *pa = (struct pci_attach_args *) aux;
! 87:
! 88: if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS &&
! 89: PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB &&
! 90: PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI)
! 91: return (1);
! 92:
! 93: return (0);
! 94: }
! 95:
! 96: void
! 97: ohci_pci_attach(struct device *parent, struct device *self, void *aux)
! 98: {
! 99: struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self;
! 100: struct pci_attach_args *pa = (struct pci_attach_args *)aux;
! 101: pci_chipset_tag_t pc = pa->pa_pc;
! 102: char const *intrstr;
! 103: pci_intr_handle_t ih;
! 104: int s;
! 105: const char *vendor;
! 106: char *devname = sc->sc.sc_bus.bdev.dv_xname;
! 107:
! 108: /* Map I/O registers */
! 109: if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0,
! 110: &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size, 0)) {
! 111: printf(": can't map mem space\n");
! 112: return;
! 113: }
! 114:
! 115: /* Record what interrupts were enabled by SMM/BIOS. */
! 116: sc->sc.sc_intre = bus_space_read_4(sc->sc.iot, sc->sc.ioh,
! 117: OHCI_INTERRUPT_ENABLE);
! 118:
! 119: /* Disable interrupts, so we don't get any spurious ones. */
! 120: bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
! 121: OHCI_MIE);
! 122:
! 123: sc->sc_pc = pc;
! 124: sc->sc.sc_bus.dmatag = pa->pa_dmat;
! 125:
! 126: bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
! 127: BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
! 128: bus_space_write_4(sc->sc.iot, sc->sc.ioh,
! 129: OHCI_INTERRUPT_DISABLE, OHCI_MIE);
! 130:
! 131: s = splusb();
! 132: /* Map and establish the interrupt. */
! 133: if (pci_intr_map(pa, &ih)) {
! 134: printf(": couldn't map interrupt\n");
! 135: bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
! 136: splx(s);
! 137: return;
! 138: }
! 139:
! 140: intrstr = pci_intr_string(pc, ih);
! 141: sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc, devname);
! 142: if (sc->sc_ih == NULL) {
! 143: printf(": couldn't establish interrupt");
! 144: if (intrstr != NULL)
! 145: printf(" at %s", intrstr);
! 146: printf("\n");
! 147: bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
! 148: splx(s);
! 149: return;
! 150: }
! 151: printf(": %s", intrstr);
! 152:
! 153: /* Figure out vendor for root hub descriptor. */
! 154: vendor = pci_findvendor(pa->pa_id);
! 155: sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id);
! 156: if (vendor)
! 157: strlcpy(sc->sc.sc_vendor, vendor, sizeof (sc->sc.sc_vendor));
! 158: else
! 159: snprintf(sc->sc.sc_vendor, sizeof (sc->sc.sc_vendor),
! 160: "vendor 0x%04x", PCI_VENDOR(pa->pa_id));
! 161:
! 162: /* Display revision and perform legacy emulation handover. */
! 163: if (ohci_checkrev(&sc->sc) != USBD_NORMAL_COMPLETION ||
! 164: ohci_handover(&sc->sc) != USBD_NORMAL_COMPLETION) {
! 165: bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
! 166: splx(s);
! 167: return;
! 168: }
! 169:
! 170: /* Ignore interrupts for now */
! 171: sc->sc.sc_dying = 1;
! 172:
! 173: config_defer(self, ohci_pci_attach_deferred);
! 174:
! 175: splx(s);
! 176:
! 177: return;
! 178: }
! 179:
! 180: void
! 181: ohci_pci_attach_deferred(struct device *self)
! 182: {
! 183: struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self;
! 184: usbd_status r;
! 185: int s;
! 186:
! 187: s = splusb();
! 188:
! 189: sc->sc.sc_dying = 0;
! 190:
! 191: r = ohci_init(&sc->sc);
! 192: if (r != USBD_NORMAL_COMPLETION) {
! 193: printf("%s: init failed, error=%d\n",
! 194: sc->sc.sc_bus.bdev.dv_xname, r);
! 195: bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
! 196: splx(s);
! 197: return;
! 198: }
! 199:
! 200: sc->sc.sc_powerhook = powerhook_establish(ohci_power, &sc->sc);
! 201: if (sc->sc.sc_powerhook == NULL)
! 202: printf("%s: unable to establish powerhook\n",
! 203: sc->sc.sc_bus.bdev.dv_xname);
! 204:
! 205: splx(s);
! 206:
! 207: /* Attach usb device. */
! 208: sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus,
! 209: usbctlprint);
! 210: }
! 211:
! 212: int
! 213: ohci_pci_detach(struct device *self, int flags)
! 214: {
! 215: struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self;
! 216: int rv;
! 217:
! 218: rv = ohci_detach(&sc->sc, flags);
! 219: if (rv)
! 220: return (rv);
! 221:
! 222: if (sc->sc.sc_powerhook != NULL)
! 223: powerhook_disestablish(sc->sc.sc_powerhook);
! 224:
! 225: if (sc->sc_ih != NULL) {
! 226: pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
! 227: sc->sc_ih = NULL;
! 228: }
! 229: if (sc->sc.sc_size) {
! 230: bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
! 231: sc->sc.sc_size = 0;
! 232: }
! 233: return (0);
! 234: }
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