Annotation of sys/dev/pci/uhci_pci.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: uhci_pci.c,v 1.25 2007/03/22 05:53:36 pascoe Exp $ */
! 2: /* $NetBSD: uhci_pci.c,v 1.24 2002/10/02 16:51:58 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: #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/uhcireg.h>
! 58: #include <dev/usb/uhcivar.h>
! 59:
! 60: int uhci_pci_match(struct device *, void *, void *);
! 61: void uhci_pci_attach(struct device *, struct device *, void *);
! 62: void uhci_pci_attach_deferred(struct device *);
! 63: int uhci_pci_detach(struct device *, int);
! 64:
! 65: struct uhci_pci_softc {
! 66: uhci_softc_t sc;
! 67: pci_chipset_tag_t sc_pc;
! 68: pcitag_t sc_tag;
! 69: void *sc_ih; /* interrupt vectoring */
! 70: };
! 71:
! 72: struct cfattach uhci_pci_ca = {
! 73: sizeof(struct uhci_pci_softc), uhci_pci_match, uhci_pci_attach,
! 74: uhci_pci_detach, uhci_activate
! 75: };
! 76:
! 77: int
! 78: uhci_pci_match(struct device *parent, void *match, 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:
! 90: void
! 91: uhci_pci_attach(struct device *parent, struct device *self, void *aux)
! 92: {
! 93: struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
! 94: struct pci_attach_args *pa = (struct pci_attach_args *)aux;
! 95: pci_chipset_tag_t pc = pa->pa_pc;
! 96: pcitag_t tag = pa->pa_tag;
! 97: char const *intrstr;
! 98: pci_intr_handle_t ih;
! 99: const char *vendor;
! 100: char *devname = sc->sc.sc_bus.bdev.dv_xname;
! 101: int s;
! 102:
! 103: #if defined(__NetBSD__)
! 104: char devinfo[256];
! 105:
! 106: pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo);
! 107: printf(": %s (rev. 0x%02x)", devinfo, PCI_REVISION(pa->pa_class));
! 108: #endif
! 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, 0)) {
! 113: printf(": can't map i/o space\n");
! 114: return;
! 115: }
! 116:
! 117:
! 118: /* Disable interrupts, so we don't get any spurious ones. */
! 119: s = splhardusb();
! 120: bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
! 121:
! 122: sc->sc_pc = pc;
! 123: sc->sc_tag = tag;
! 124: sc->sc.sc_bus.dmatag = pa->pa_dmat;
! 125:
! 126: /* Map and establish the interrupt. */
! 127: if (pci_intr_map(pa, &ih)) {
! 128: printf(": couldn't map interrupt\n");
! 129: goto unmap_ret;
! 130: }
! 131: intrstr = pci_intr_string(pc, ih);
! 132: sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc,
! 133: devname);
! 134: if (sc->sc_ih == NULL) {
! 135: printf(": couldn't establish interrupt");
! 136: if (intrstr != NULL)
! 137: printf(" at %s", intrstr);
! 138: printf("\n");
! 139: goto unmap_ret;
! 140: }
! 141: printf(": %s\n", intrstr);
! 142:
! 143: /* Set LEGSUP register to its default value. */
! 144: pci_conf_write(pc, tag, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN);
! 145:
! 146: switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) {
! 147: case PCI_USBREV_PRE_1_0:
! 148: sc->sc.sc_bus.usbrev = USBREV_PRE_1_0;
! 149: break;
! 150: case PCI_USBREV_1_0:
! 151: sc->sc.sc_bus.usbrev = USBREV_1_0;
! 152: break;
! 153: case PCI_USBREV_1_1:
! 154: sc->sc.sc_bus.usbrev = USBREV_1_1;
! 155: break;
! 156: default:
! 157: sc->sc.sc_bus.usbrev = USBREV_UNKNOWN;
! 158: break;
! 159: }
! 160:
! 161: uhci_run(&sc->sc, 0); /* stop the controller */
! 162: /* disable interrupts */
! 163: bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size,
! 164: BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE);
! 165: bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0);
! 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: strlcpy(sc->sc.sc_vendor, vendor, sizeof (sc->sc.sc_vendor));
! 172: else
! 173: snprintf(sc->sc.sc_vendor, sizeof (sc->sc.sc_vendor),
! 174: "vendor 0x%04x", PCI_VENDOR(pa->pa_id));
! 175:
! 176: config_defer(self, uhci_pci_attach_deferred);
! 177:
! 178: /* Ignore interrupts for now */
! 179: sc->sc.sc_dying = 1;
! 180:
! 181: splx(s);
! 182:
! 183: return;
! 184:
! 185: unmap_ret:
! 186: bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
! 187: splx(s);
! 188: }
! 189:
! 190: void
! 191: uhci_pci_attach_deferred(struct device *self)
! 192: {
! 193: struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
! 194: char *devname = sc->sc.sc_bus.bdev.dv_xname;
! 195: usbd_status r;
! 196: int s;
! 197:
! 198: s = splhardusb();
! 199:
! 200: sc->sc.sc_dying = 0;
! 201: r = uhci_init(&sc->sc);
! 202: if (r != USBD_NORMAL_COMPLETION) {
! 203: printf("%s: init failed, error=%d\n", devname, r);
! 204: goto unmap_ret;
! 205: }
! 206: splx(s);
! 207:
! 208: /* Attach usb device. */
! 209: sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus,
! 210: usbctlprint);
! 211:
! 212: return;
! 213:
! 214: unmap_ret:
! 215: bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
! 216: splx(s);
! 217: }
! 218:
! 219: int
! 220: uhci_pci_detach(struct device *self, int flags)
! 221: {
! 222: struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self;
! 223: int rv;
! 224:
! 225: rv = uhci_detach(&sc->sc, flags);
! 226: if (rv)
! 227: return (rv);
! 228: if (sc->sc_ih != NULL) {
! 229: pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
! 230: sc->sc_ih = NULL;
! 231: }
! 232: if (sc->sc.sc_size) {
! 233: bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
! 234: sc->sc.sc_size = 0;
! 235: }
! 236:
! 237: return (0);
! 238: }
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