sys/dev/pci/ohci_pci.c

   1 /*      $NetBSD: ohci_pci.c,v 1.42 2009/04/26 08:46:10 cegger 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  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: ohci_pci.c,v 1.42 2009/04/26 08:46:10 cegger Exp $");
  35
  36 #include "ehci.h"
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/kernel.h>
  41 #include <sys/device.h>
  42 #include <sys/proc.h>
  43 #include <sys/queue.h>
  44
  45 #include <sys/bus.h>
  46
  47 #include <dev/pci/pcivar.h>
  48 #include <dev/pci/usb_pci.h>
  49
  50 #include <dev/usb/usb.h>
  51 #include <dev/usb/usbdi.h>
  52 #include <dev/usb/usbdivar.h>
  53 #include <dev/usb/usb_mem.h>
  54
  55 #include <dev/usb/ohcireg.h>
  56 #include <dev/usb/ohcivar.h>
  57
  58 struct ohci_pci_softc {
  59         ohci_softc_t            sc;
  60 #if NEHCI > 0
  61         struct usb_pci          sc_pci;
  62 #endif
  63         pci_chipset_tag_t       sc_pc;
  64         pcitag_t                sc_tag;
  65         void                    *sc_ih;         /* interrupt vectoring */
  66 };
  67
  68 static int
  69 ohci_pci_match(device_t parent, cfdata_t match, void *aux)
  70 {
  71         struct pci_attach_args *pa = (struct pci_attach_args *) aux;
  72
  73         if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS &&
  74             PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB &&
  75             PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI)
  76                 return 1;
  77
  78         return 0;
  79 }
  80
  81 static void
  82 ohci_pci_attach(device_t parent, device_t self, void *aux)
  83 {
  84         struct ohci_pci_softc *sc = device_private(self);
  85         struct pci_attach_args *pa = (struct pci_attach_args *)aux;
  86         pci_chipset_tag_t pc = pa->pa_pc;
  87         pcitag_t tag = pa->pa_tag;
  88         char const *intrstr;
  89         pci_intr_handle_t ih;
  90         pcireg_t csr;
  91         char devinfo[256];
  92         usbd_status r;
  93         const char *vendor;
  94
  95         sc->sc.sc_dev = self;
  96         sc->sc.sc_bus.hci_private = sc;
  97
  98         pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
  99         aprint_normal(": %s (rev. 0x%02x)\n",
 100             devinfo, PCI_REVISION(pa->pa_class));
 101
 102         /* Map I/O registers */
 103         if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0,
 104                            &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) {
 105                 sc->sc.sc_size = 0;
 106                 aprint_error_dev(self, "can't map mem space\n");
 107                 return;
 108         }
 109
 110         /* Disable interrupts, so we don't get any spurious ones. */
 111         bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE,
 112                           OHCI_ALL_INTRS);
 113
 114         sc->sc_pc = pc;
 115         sc->sc_tag = tag;
 116         sc->sc.sc_bus.dmatag = pa->pa_dmat;
 117
 118         /* Enable the device. */
 119         csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
 120         pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG,
 121                        csr | PCI_COMMAND_MASTER_ENABLE);
 122
 123         /* Map and establish the interrupt. */
 124         if (pci_intr_map(pa, &ih)) {
 125                 aprint_error_dev(self, "couldn't map interrupt\n");
 126                 goto fail;
 127         }
 128
 129         /*
 130          * Allocate IRQ
 131          */
 132         intrstr = pci_intr_string(pc, ih);
 133         sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc);
 134         if (sc->sc_ih == NULL) {
 135                 aprint_error_dev(self, "couldn't establish interrupt");
 136                 if (intrstr != NULL)
 137                         aprint_error(" at %s", intrstr);
 138                 aprint_error("\n");
 139                 goto fail;
 140         }
 141         aprint_normal_dev(self, "interrupting at %s\n", intrstr);
 142
 143         /* Figure out vendor for root hub descriptor. */
 144         vendor = pci_findvendor(pa->pa_id);
 145         sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id);
 146         if (vendor)
 147                 strlcpy(sc->sc.sc_vendor, vendor, sizeof(sc->sc.sc_vendor));
 148         else
 149                 snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor),
 150                     "vendor 0x%04x", PCI_VENDOR(pa->pa_id));
 151
 152         r = ohci_init(&sc->sc);
 153         if (r != USBD_NORMAL_COMPLETION) {
 154                 aprint_error_dev(self, "init failed, error=%d\n", r);
 155                 goto fail;
 156         }
 157
 158 #if NEHCI > 0
 159         usb_pci_add(&sc->sc_pci, pa, self);
 160 #endif
 161
 162         if (!pmf_device_register1(self, ohci_suspend, ohci_resume,
 163                                   ohci_shutdown))
 164                 aprint_error_dev(self, "couldn't establish power handler\n");
 165
 166         /* Attach usb device. */
 167         sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint);
 168         return;
 169
 170 fail:
 171         if (sc->sc_ih) {
 172                 pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
 173                 sc->sc_ih = NULL;
 174         }
 175         if (sc->sc.sc_size) {
 176                 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
 177                 sc->sc.sc_size = 0;
 178         }
 179         return;
 180 }
 181
 182 static int
 183 ohci_pci_detach(device_t self, int flags)
 184 {
 185         struct ohci_pci_softc *sc = device_private(self);
 186         int rv;
 187
 188         pmf_device_deregister(self);
 189         rv = ohci_detach(&sc->sc, flags);
 190         if (rv)
 191                 return rv;
 192
 193         if (sc->sc.sc_size) {
 194                 /* Disable interrupts, so we don't get any spurious ones. */
 195                 bus_space_write_4(sc->sc.iot, sc->sc.ioh,
 196                                   OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS);
 197         }
 198
 199         if (sc->sc_ih != NULL) {
 200                 pci_intr_disestablish(sc->sc_pc, sc->sc_ih);
 201                 sc->sc_ih = NULL;
 202         }
 203         if (sc->sc.sc_size) {
 204                 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size);
 205                 sc->sc.sc_size = 0;
 206         }
 207 #if NEHCI > 0
 208         usb_pci_rem(&sc->sc_pci);
 209 #endif
 210         return 0;
 211 }
 212
 213 CFATTACH_DECL3_NEW(ohci_pci, sizeof(struct ohci_pci_softc),
 214     ohci_pci_match, ohci_pci_attach, ohci_pci_detach, ohci_activate, NULL,
 215     ohci_childdet, DVF_DETACH_SHUTDOWN);