ehci_pci.c revision 1.12
1 /* $NetBSD: ehci_pci.c,v 1.12 2002/10/02 16:51:11 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 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 (at) augustsson.net). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ehci_pci.c,v 1.12 2002/10/02 16:51:11 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/device.h> 46 #include <sys/proc.h> 47 #include <sys/queue.h> 48 49 #include <machine/bus.h> 50 51 #include <dev/pci/pcivar.h> 52 #include <dev/pci/usb_pci.h> 53 54 #include <dev/usb/usb.h> 55 #include <dev/usb/usbdi.h> 56 #include <dev/usb/usbdivar.h> 57 #include <dev/usb/usb_mem.h> 58 59 #include <dev/usb/ehcireg.h> 60 #include <dev/usb/ehcivar.h> 61 62 #ifdef EHCI_DEBUG 63 #define DPRINTF(x) if (ehcidebug) printf x 64 extern int ehcidebug; 65 #else 66 #define DPRINTF(x) 67 #endif 68 69 int ehci_pci_match(struct device *, struct cfdata *, void *); 70 void ehci_pci_attach(struct device *, struct device *, void *); 71 int ehci_pci_detach(device_ptr_t, int); 72 73 struct ehci_pci_softc { 74 ehci_softc_t sc; 75 pci_chipset_tag_t sc_pc; 76 pcitag_t sc_tag; 77 void *sc_ih; /* interrupt vectoring */ 78 }; 79 80 CFATTACH_DECL(ehci_pci, sizeof(struct ehci_pci_softc), 81 ehci_pci_match, ehci_pci_attach, ehci_pci_detach, ehci_activate); 82 83 int 84 ehci_pci_match(struct device *parent, struct cfdata *match, void *aux) 85 { 86 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 87 88 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 89 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 90 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_EHCI) 91 return (1); 92 93 return (0); 94 } 95 96 void 97 ehci_pci_attach(struct device *parent, struct device *self, void *aux) 98 { 99 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 100 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 101 pci_chipset_tag_t pc = pa->pa_pc; 102 pcitag_t tag = pa->pa_tag; 103 char const *intrstr; 104 pci_intr_handle_t ih; 105 pcireg_t csr; 106 char *vendor; 107 char *devname = sc->sc.sc_bus.bdev.dv_xname; 108 char devinfo[256]; 109 usbd_status r; 110 int ncomp; 111 struct usb_pci *up; 112 113 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 114 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 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)) { 119 printf("%s: can't map memory space\n", devname); 120 return; 121 } 122 123 sc->sc_pc = pc; 124 sc->sc_tag = tag; 125 sc->sc.sc_bus.dmatag = pa->pa_dmat; 126 127 /* Enable the device. */ 128 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 129 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 130 csr | PCI_COMMAND_MASTER_ENABLE); 131 132 /* Disable interrupts, so we don't get any spurious ones. */ 133 sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH); 134 DPRINTF(("%s: offs=%d\n", devname, sc->sc.sc_offs)); 135 EOWRITE2(&sc->sc, EHCI_USBINTR, 0); 136 137 /* Map and establish the interrupt. */ 138 if (pci_intr_map(pa, &ih)) { 139 printf("%s: couldn't map interrupt\n", devname); 140 return; 141 } 142 intrstr = pci_intr_string(pc, ih); 143 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ehci_intr, sc); 144 if (sc->sc_ih == NULL) { 145 printf("%s: couldn't establish interrupt", devname); 146 if (intrstr != NULL) 147 printf(" at %s", intrstr); 148 printf("\n"); 149 return; 150 } 151 printf("%s: interrupting at %s\n", devname, intrstr); 152 153 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 154 case PCI_USBREV_PRE_1_0: 155 case PCI_USBREV_1_0: 156 case PCI_USBREV_1_1: 157 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 158 printf("%s: pre-2.0 USB rev\n", devname); 159 return; 160 case PCI_USBREV_2_0: 161 sc->sc.sc_bus.usbrev = USBREV_2_0; 162 break; 163 default: 164 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 165 break; 166 } 167 168 /* Figure out vendor for root hub descriptor. */ 169 vendor = pci_findvendor(pa->pa_id); 170 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 171 if (vendor) 172 strncpy(sc->sc.sc_vendor, vendor, 173 sizeof(sc->sc.sc_vendor) - 1); 174 else 175 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 176 PCI_VENDOR(pa->pa_id)); 177 178 /* 179 * Find companion controllers. According to the spec they always 180 * have lower function numbers so they should be enumerated already. 181 */ 182 ncomp = 0; 183 TAILQ_FOREACH(up, &ehci_pci_alldevs, next) { 184 if (up->bus == pa->pa_bus && up->device == pa->pa_device) { 185 DPRINTF(("ehci_pci_attach: companion %s\n", 186 USBDEVNAME(up->usb->bdev))); 187 sc->sc.sc_comps[ncomp++] = up->usb; 188 if (ncomp >= EHCI_COMPANION_MAX) 189 break; 190 } 191 } 192 sc->sc.sc_ncomp = ncomp; 193 194 r = ehci_init(&sc->sc); 195 if (r != USBD_NORMAL_COMPLETION) { 196 printf("%s: init failed, error=%d\n", devname, r); 197 return; 198 } 199 200 /* Attach usb device. */ 201 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 202 usbctlprint); 203 } 204 205 int 206 ehci_pci_detach(device_ptr_t self, int flags) 207 { 208 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 209 int rv; 210 211 rv = ehci_detach(&sc->sc, flags); 212 if (rv) 213 return (rv); 214 if (sc->sc_ih != NULL) { 215 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 216 sc->sc_ih = NULL; 217 } 218 if (sc->sc.sc_size) { 219 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 220 sc->sc.sc_size = 0; 221 } 222 return (0); 223 } 224
Indexes created Sun Sep 28 12:09:53 GMT 2025