uhci_pci.c revision 1.42
1/* $NetBSD: uhci_pci.c,v 1.42 2008/03/07 21:57:56 dyoung 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 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40#include <sys/cdefs.h> 41__KERNEL_RCSID(0, "$NetBSD: uhci_pci.c,v 1.42 2008/03/07 21:57:56 dyoung Exp $"); 42 43#include "ehci.h" 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/kernel.h> 48#include <sys/device.h> 49#include <sys/proc.h> 50#include <sys/queue.h> 51 52#include <sys/bus.h> 53 54#include <dev/pci/pcivar.h> 55#include <dev/pci/usb_pci.h> 56 57#include <dev/usb/usb.h> 58#include <dev/usb/usbdi.h> 59#include <dev/usb/usbdivar.h> 60#include <dev/usb/usb_mem.h> 61 62#include <dev/usb/uhcireg.h> 63#include <dev/usb/uhcivar.h> 64 65static bool uhci_pci_resume(device_t PMF_FN_PROTO); 66 67struct uhci_pci_softc { 68 uhci_softc_t sc; 69#if NEHCI > 0 70 struct usb_pci sc_pci; 71#endif 72 pci_chipset_tag_t sc_pc; 73 pcitag_t sc_tag; 74 void *sc_ih; /* interrupt vectoring */ 75}; 76 77static int 78uhci_pci_match(device_t parent, struct cfdata *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 90static void 91uhci_pci_attach(device_t parent, device_t self, void *aux) 92{ 93 struct uhci_pci_softc *sc = device_private(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 pcireg_t csr; 100 const char *vendor; 101 char devinfo[256]; 102 usbd_status r; 103 int s; 104 105 aprint_naive("\n"); 106 107 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 108 aprint_normal(": %s (rev. 0x%02x)\n", 109 devinfo, PCI_REVISION(pa->pa_class)); 110 111 /* Map I/O registers */ 112 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 113 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 114 aprint_error_dev(self, "can't map i/o space\n"); 115 return; 116 } 117 118 /* 119 * Disable interrupts, so we don't get any spurious ones. 120 * Acknowledge all pending interrupts. 121 */ 122 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 123 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_STS, 124 bus_space_read_2(sc->sc.iot, sc->sc.ioh, UHCI_STS)); 125 126 sc->sc_pc = pc; 127 sc->sc_tag = tag; 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 /* Map and establish the interrupt. */ 136 if (pci_intr_map(pa, &ih)) { 137 aprint_error_dev(self, "couldn't map interrupt\n"); 138 return; 139 } 140 intrstr = pci_intr_string(pc, ih); 141 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc); 142 if (sc->sc_ih == NULL) { 143 aprint_error_dev(self, "couldn't establish interrupt"); 144 if (intrstr != NULL) 145 aprint_normal(" at %s", intrstr); 146 aprint_normal("\n"); 147 return; 148 } 149 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 150 151 /* 152 * Set LEGSUP register to its default value. 153 * This can re-enable or trigger interrupts, so protect against 154 * them and explicitly disable and ACK them afterwards. 155 */ 156 s = splhardusb(); 157 pci_conf_write(pc, tag, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN); 158 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 159 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_STS, 160 bus_space_read_2(sc->sc.iot, sc->sc.ioh, UHCI_STS)); 161 splx(s); 162 163 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 164 case PCI_USBREV_PRE_1_0: 165 sc->sc.sc_bus.usbrev = USBREV_PRE_1_0; 166 break; 167 case PCI_USBREV_1_0: 168 sc->sc.sc_bus.usbrev = USBREV_1_0; 169 break; 170 case PCI_USBREV_1_1: 171 sc->sc.sc_bus.usbrev = USBREV_1_1; 172 break; 173 default: 174 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 175 break; 176 } 177 178 /* Figure out vendor for root hub descriptor. */ 179 vendor = pci_findvendor(pa->pa_id); 180 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 181 if (vendor) 182 strlcpy(sc->sc.sc_vendor, vendor, sizeof(sc->sc.sc_vendor)); 183 else 184 snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor), 185 "vendor 0x%04x", PCI_VENDOR(pa->pa_id)); 186 187 r = uhci_init(&sc->sc); 188 if (r != USBD_NORMAL_COMPLETION) { 189 aprint_error_dev(self, "init failed, error=%d\n", r); 190 return; 191 } 192 193#if NEHCI > 0 194 usb_pci_add(&sc->sc_pci, pa, &sc->sc.sc_bus); 195#endif 196 197 if (!pmf_device_register(self, uhci_suspend, uhci_pci_resume)) 198 aprint_error_dev(self, "couldn't establish power handler\n"); 199 200 /* Attach usb device. */ 201 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); 202} 203 204static int 205uhci_pci_detach(device_t self, int flags) 206{ 207 struct uhci_pci_softc *sc = device_private(self); 208 int rv; 209 210 pmf_device_deregister(self); 211 212 rv = uhci_detach(&sc->sc, flags); 213 if (rv) 214 return (rv); 215 if (sc->sc_ih != NULL) { 216 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 217 sc->sc_ih = NULL; 218 } 219 if (sc->sc.sc_size) { 220 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 221 sc->sc.sc_size = 0; 222 } 223#if NEHCI > 0 224 usb_pci_rem(&sc->sc_pci); 225#endif 226 return (0); 227} 228 229static bool 230uhci_pci_resume(device_t dv PMF_FN_ARGS) 231{ 232 struct uhci_pci_softc *sc = device_private(dv); 233 234 /* Set LEGSUP register to its default value. */ 235 pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_LEGSUP, 236 PCI_LEGSUP_USBPIRQDEN); 237 238 return uhci_resume(dv PMF_FN_CALL); 239} 240 241CFATTACH_DECL2(uhci_pci, sizeof(struct uhci_pci_softc), 242 uhci_pci_match, uhci_pci_attach, uhci_pci_detach, uhci_activate, 243 NULL, uhci_childdet); 244