uhci_pci.c revision 1.31
1/* $NetBSD: uhci_pci.c,v 1.31 2006/03/10 17:21:20 jmcneill 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 1.31 2006/03/10 17:21:20 jmcneill 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 <machine/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 void uhci_pci_powerhook(int, void *); 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 void *sc_powerhook; 77 struct pci_conf_state sc_pciconf; 78}; 79 80static int 81uhci_pci_match(struct device *parent, struct cfdata *match, void *aux) 82{ 83 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 84 85 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 86 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 87 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_UHCI) 88 return (1); 89 90 return (0); 91} 92 93static void 94uhci_pci_attach(struct device *parent, struct device *self, void *aux) 95{ 96 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 97 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 98 pci_chipset_tag_t pc = pa->pa_pc; 99 pcitag_t tag = pa->pa_tag; 100 char const *intrstr; 101 pci_intr_handle_t ih; 102 pcireg_t csr; 103 const char *vendor; 104 const char *devname = sc->sc.sc_bus.bdev.dv_xname; 105 char devinfo[256]; 106 usbd_status r; 107 108 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 109 printf(": %s (rev. 0x%02x)\n", 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 printf("%s: can't map i/o space\n", devname); 115 return; 116 } 117 118 /* Disable interrupts, so we don't get any spurious ones. */ 119 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 120 121 sc->sc_pc = pc; 122 sc->sc_tag = tag; 123 sc->sc.sc_bus.dmatag = pa->pa_dmat; 124 125 /* Enable the device. */ 126 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 127 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 128 csr | PCI_COMMAND_MASTER_ENABLE); 129 130 /* Map and establish the interrupt. */ 131 if (pci_intr_map(pa, &ih)) { 132 printf("%s: couldn't map interrupt\n", devname); 133 return; 134 } 135 intrstr = pci_intr_string(pc, ih); 136 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc); 137 if (sc->sc_ih == NULL) { 138 printf("%s: couldn't establish interrupt", devname); 139 if (intrstr != NULL) 140 printf(" at %s", intrstr); 141 printf("\n"); 142 return; 143 } 144 printf("%s: interrupting at %s\n", devname, intrstr); 145 146 /* Set LEGSUP register to its default value. */ 147 pci_conf_write(pc, tag, PCI_LEGSUP, PCI_LEGSUP_USBPIRQDEN); 148 149 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 150 case PCI_USBREV_PRE_1_0: 151 sc->sc.sc_bus.usbrev = USBREV_PRE_1_0; 152 break; 153 case PCI_USBREV_1_0: 154 sc->sc.sc_bus.usbrev = USBREV_1_0; 155 break; 156 case PCI_USBREV_1_1: 157 sc->sc.sc_bus.usbrev = USBREV_1_1; 158 break; 159 default: 160 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 161 break; 162 } 163 164 /* Figure out vendor for root hub descriptor. */ 165 vendor = pci_findvendor(pa->pa_id); 166 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 167 if (vendor) 168 strlcpy(sc->sc.sc_vendor, vendor, sizeof(sc->sc.sc_vendor)); 169 else 170 snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor), 171 "vendor 0x%04x", PCI_VENDOR(pa->pa_id)); 172 173 r = uhci_init(&sc->sc); 174 if (r != USBD_NORMAL_COMPLETION) { 175 printf("%s: init failed, error=%d\n", devname, r); 176 return; 177 } 178 179#if NEHCI > 0 180 usb_pci_add(&sc->sc_pci, pa, &sc->sc.sc_bus); 181#endif 182 183 sc->sc_powerhook = powerhook_establish(uhci_pci_powerhook, sc); 184 if (sc->sc_powerhook == NULL) 185 aprint_error("%s: couldn't establish powerhook\n", 186 devname); 187 188 /* Attach usb device. */ 189 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 190 usbctlprint); 191} 192 193static int 194uhci_pci_detach(device_ptr_t self, int flags) 195{ 196 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 197 int rv; 198 199 if (sc->sc_powerhook != NULL) 200 powerhook_disestablish(sc->sc_powerhook); 201 202 rv = uhci_detach(&sc->sc, flags); 203 if (rv) 204 return (rv); 205 if (sc->sc_ih != NULL) { 206 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 207 sc->sc_ih = NULL; 208 } 209 if (sc->sc.sc_size) { 210 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 211 sc->sc.sc_size = 0; 212 } 213#if NEHCI > 0 214 usb_pci_rem(&sc->sc_pci); 215#endif 216 return (0); 217} 218 219static void 220uhci_pci_powerhook(int why, void *opaque) 221{ 222 struct uhci_pci_softc *sc; 223 pci_chipset_tag_t pc; 224 pcitag_t tag; 225 pcireg_t reg; 226 227 sc = (struct uhci_pci_softc *)opaque; 228 pc = sc->sc_pc; 229 tag = sc->sc_tag; 230 231 switch (why) { 232 case PWR_SUSPEND: 233 case PWR_STANDBY: 234 pci_conf_capture(pc, tag, &sc->sc_pciconf); 235 break; 236 case PWR_RESUME: 237 pci_conf_restore(pc, tag, &sc->sc_pciconf); 238 /* the BIOS might change this on us */ 239 reg = pci_conf_read(pc, tag, PCI_LEGSUP); 240 reg |= PCI_LEGSUP_USBPIRQDEN; 241 reg &= ~PCI_LEGSUP_USBSMIEN; 242 pci_conf_write(pc, tag, PCI_LEGSUP, reg); 243 break; 244 } 245 246 return; 247} 248 249CFATTACH_DECL(uhci_pci, sizeof(struct uhci_pci_softc), 250 uhci_pci_match, uhci_pci_attach, uhci_pci_detach, uhci_activate); 251