uhci_pci.c revision 1.43
1/* $NetBSD: uhci_pci.c,v 1.43 2008/03/28 17:14:46 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 * 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 1.43 2008/03/28 17:14:46 drochner 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 sc->sc.sc_dev = self; 106 sc->sc.sc_bus.hci_private = sc; 107 108 aprint_naive("\n"); 109 110 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 111 aprint_normal(": %s (rev. 0x%02x)\n", 112 devinfo, PCI_REVISION(pa->pa_class)); 113 114 /* Map I/O registers */ 115 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 116 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 117 aprint_error_dev(self, "can't map i/o space\n"); 118 return; 119 } 120 121 /* 122 * Disable interrupts, so we don't get any spurious ones. 123 * Acknowledge all pending interrupts. 124 */ 125 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 126 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_STS, 127 bus_space_read_2(sc->sc.iot, sc->sc.ioh, UHCI_STS)); 128 129 sc->sc_pc = pc; 130 sc->sc_tag = tag; 131 sc->sc.sc_bus.dmatag = pa->pa_dmat; 132 133 /* Enable the device. */ 134 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 135 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 136 csr | PCI_COMMAND_MASTER_ENABLE); 137 138 /* Map and establish the interrupt. */ 139 if (pci_intr_map(pa, &ih)) { 140 aprint_error_dev(self, "couldn't map interrupt\n"); 141 return; 142 } 143 intrstr = pci_intr_string(pc, ih); 144 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc); 145 if (sc->sc_ih == NULL) { 146 aprint_error_dev(self, "couldn't establish interrupt"); 147 if (intrstr != NULL) 148 aprint_normal(" at %s", intrstr); 149 aprint_normal("\n"); 150 return; 151 } 152 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 153 154 /* 155 * Set LEGSUP register to its default value. 156 * This can re-enable or trigger interrupts, so protect against 157 * them and explicitly disable and ACK them afterwards. 158 */ 159 s = splhardusb(); 160 pci_conf_write(pc, tag, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN); 161 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 162 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_STS, 163 bus_space_read_2(sc->sc.iot, sc->sc.ioh, UHCI_STS)); 164 splx(s); 165 166 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 167 case PCI_USBREV_PRE_1_0: 168 sc->sc.sc_bus.usbrev = USBREV_PRE_1_0; 169 break; 170 case PCI_USBREV_1_0: 171 sc->sc.sc_bus.usbrev = USBREV_1_0; 172 break; 173 case PCI_USBREV_1_1: 174 sc->sc.sc_bus.usbrev = USBREV_1_1; 175 break; 176 default: 177 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 178 break; 179 } 180 181 /* Figure out vendor for root hub descriptor. */ 182 vendor = pci_findvendor(pa->pa_id); 183 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 184 if (vendor) 185 strlcpy(sc->sc.sc_vendor, vendor, sizeof(sc->sc.sc_vendor)); 186 else 187 snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor), 188 "vendor 0x%04x", PCI_VENDOR(pa->pa_id)); 189 190 r = uhci_init(&sc->sc); 191 if (r != USBD_NORMAL_COMPLETION) { 192 aprint_error_dev(self, "init failed, error=%d\n", r); 193 return; 194 } 195 196#if NEHCI > 0 197 usb_pci_add(&sc->sc_pci, pa, self); 198#endif 199 200 if (!pmf_device_register(self, uhci_suspend, uhci_pci_resume)) 201 aprint_error_dev(self, "couldn't establish power handler\n"); 202 203 /* Attach usb device. */ 204 sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); 205} 206 207static int 208uhci_pci_detach(device_t self, int flags) 209{ 210 struct uhci_pci_softc *sc = device_private(self); 211 int rv; 212 213 pmf_device_deregister(self); 214 215 rv = uhci_detach(&sc->sc, flags); 216 if (rv) 217 return (rv); 218 if (sc->sc_ih != NULL) { 219 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 220 sc->sc_ih = NULL; 221 } 222 if (sc->sc.sc_size) { 223 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 224 sc->sc.sc_size = 0; 225 } 226#if NEHCI > 0 227 usb_pci_rem(&sc->sc_pci); 228#endif 229 return (0); 230} 231 232static bool 233uhci_pci_resume(device_t dv PMF_FN_ARGS) 234{ 235 struct uhci_pci_softc *sc = device_private(dv); 236 237 /* Set LEGSUP register to its default value. */ 238 pci_conf_write(sc->sc_pc, sc->sc_tag, PCI_LEGSUP, 239 PCI_LEGSUP_USBPIRQDEN); 240 241 return uhci_resume(dv PMF_FN_CALL); 242} 243 244CFATTACH_DECL2_NEW(uhci_pci, sizeof(struct uhci_pci_softc), 245 uhci_pci_match, uhci_pci_attach, uhci_pci_detach, uhci_activate, 246 NULL, uhci_childdet); 247