1 /* $NetBSD: ohci_pci.c,v 1.48 2012/01/30 19:41:22 drochner 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 1.48 2012/01/30 19:41:22 drochner 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 usbd_status r; 92 const char *vendor; 93 94 sc->sc.sc_dev = self; 95 sc->sc.sc_bus.hci_private = sc; 96 97 pci_aprint_devinfo(pa, "USB Controller"); 98 99 /* Map I/O registers */ 100 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 101 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 102 sc->sc.sc_size = 0; 103 aprint_error_dev(self, "can't map mem space\n"); 104 return; 105 } 106 107 /* Disable interrupts, so we don't get any spurious ones. */ 108 bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, 109 OHCI_ALL_INTRS); 110 111 sc->sc_pc = pc; 112 sc->sc_tag = tag; 113 sc->sc.sc_bus.dmatag = pa->pa_dmat; 114 115 /* Enable the device. */ 116 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 117 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 118 csr | PCI_COMMAND_MASTER_ENABLE); 119 120 /* Map and establish the interrupt. */ 121 if (pci_intr_map(pa, &ih)) { 122 aprint_error_dev(self, "couldn't map interrupt\n"); 123 goto fail; 124 } 125 126 /* 127 * Allocate IRQ 128 */ 129 intrstr = pci_intr_string(pc, ih); 130 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc); 131 if (sc->sc_ih == NULL) { 132 aprint_error_dev(self, "couldn't establish interrupt"); 133 if (intrstr != NULL) 134 aprint_error(" at %s", intrstr); 135 aprint_error("\n"); 136 goto fail; 137 } 138 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 139 140 /* Figure out vendor for root hub descriptor. */ 141 vendor = pci_findvendor(pa->pa_id); 142 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 143 if (vendor) 144 strlcpy(sc->sc.sc_vendor, vendor, sizeof(sc->sc.sc_vendor)); 145 else 146 snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor), 147 "vendor 0x%04x", PCI_VENDOR(pa->pa_id)); 148 149 r = ohci_init(&sc->sc); 150 if (r != USBD_NORMAL_COMPLETION) { 151 aprint_error_dev(self, "init failed, error=%d\n", r); 152 goto fail; 153 } 154 155 #if NEHCI > 0 156 usb_pci_add(&sc->sc_pci, pa, self); 157 #endif 158 159 if (!pmf_device_register1(self, ohci_suspend, ohci_resume, 160 ohci_shutdown)) 161 aprint_error_dev(self, "couldn't establish power handler\n"); 162 163 /* Attach usb device. */ 164 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); 165 return; 166 167 fail: 168 if (sc->sc_ih) { 169 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 170 sc->sc_ih = NULL; 171 } 172 if (sc->sc.sc_size) { 173 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 174 sc->sc.sc_size = 0; 175 } 176 return; 177 } 178 179 static int 180 ohci_pci_detach(device_t self, int flags) 181 { 182 struct ohci_pci_softc *sc = device_private(self); 183 int rv; 184 185 rv = ohci_detach(&sc->sc, flags); 186 if (rv) 187 return rv; 188 189 pmf_device_deregister(self); 190 191 ohci_shutdown(self, flags); 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); 216