1 /* $OpenBSD: ohci_pci.c,v 1.19 2003/08/11 02:21:28 mickey 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 int ohci_pci_detach(device_ptr_t, int); 70 71 struct ohci_pci_softc { 72 ohci_softc_t sc; 73 pci_chipset_tag_t sc_pc; 74 void *sc_ih; /* interrupt vectoring */ 75 }; 76 77 struct cfattach ohci_pci_ca = { 78 sizeof(struct ohci_pci_softc), ohci_pci_match, ohci_pci_attach, 79 ohci_pci_detach, ohci_activate 80 }; 81 82 int 83 ohci_pci_match(struct device *parent, void *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_OHCI) 90 return (1); 91 92 return (0); 93 } 94 95 void 96 ohci_pci_attach(struct device *parent, struct device *self, void *aux) 97 { 98 struct ohci_pci_softc *sc = (struct ohci_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 usbd_status r; 106 int s; 107 const char *vendor; 108 char *devname = sc->sc.sc_bus.bdev.dv_xname; 109 110 #if defined(__NetBSD__) 111 char devinfo[256]; 112 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 113 printf(": %s (rev. 0x%02x)", devinfo, PCI_REVISION(pa->pa_class)); 114 #endif 115 116 /* Map I/O registers */ 117 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 118 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size, 0)) { 119 printf(": can't map mem space\n"); 120 return; 121 } 122 123 /* Disable interrupts, so we don't get any spurious ones. */ 124 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 125 OHCI_MIE); 126 127 sc->sc_pc = pc; 128 sc->sc.sc_bus.dmatag = pa->pa_dmat; 129 130 /* Enable the device. */ 131 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 132 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 133 csr | PCI_COMMAND_MASTER_ENABLE); 134 135 bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size, 136 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); 137 bus_space_write_4(sc->sc.iot, sc->sc.ioh, 138 OHCI_INTERRUPT_DISABLE, OHCI_MIE); 139 140 s = splusb(); 141 /* Map and establish the interrupt. */ 142 if (pci_intr_map(pa, &ih)) { 143 printf(": couldn't map interrupt\n"); 144 splx(s); 145 return; 146 } 147 148 intrstr = pci_intr_string(pc, ih); 149 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc, devname); 150 if (sc->sc_ih == NULL) { 151 printf(": couldn't establish interrupt"); 152 if (intrstr != NULL) 153 printf(" at %s", intrstr); 154 printf("\n"); 155 splx(s); 156 return; 157 } 158 printf(": %s", intrstr); 159 160 /* Figure out vendor for root hub descriptor. */ 161 vendor = pci_findvendor(pa->pa_id); 162 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 163 if (vendor) 164 strncpy(sc->sc.sc_vendor, vendor, 165 sizeof(sc->sc.sc_vendor) - 1); 166 else 167 snprintf(sc->sc.sc_vendor, sizeof sc->sc.sc_vendor, 168 "vendor 0x%04x", PCI_VENDOR(pa->pa_id)); 169 170 r = ohci_init(&sc->sc); 171 if (r != USBD_NORMAL_COMPLETION) { 172 printf("%s: init failed, error=%d\n", 173 sc->sc.sc_bus.bdev.dv_xname, r); 174 splx(s); 175 return; 176 } 177 splx(s); 178 179 /* Attach usb device. */ 180 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 181 usbctlprint); 182 } 183 184 int 185 ohci_pci_detach(device_ptr_t self, int flags) 186 { 187 struct ohci_pci_softc *sc = (struct ohci_pci_softc *)self; 188 int rv; 189 190 rv = ohci_detach(&sc->sc, flags); 191 if (rv) 192 return (rv); 193 if (sc->sc_ih != NULL) { 194 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 195 sc->sc_ih = NULL; 196 } 197 if (sc->sc.sc_size) { 198 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 199 sc->sc.sc_size = 0; 200 } 201 return (0); 202 } 203