ehci_pci.c revision 1.4
1 /* $NetBSD: ehci_pci.c,v 1.4 2001/11/06 03:17:36 augustss Exp $ */ 2 3 /* 4 * Copyright (c) 2000 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/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/proc.h> 44 #include <sys/queue.h> 45 46 #include <machine/bus.h> 47 48 #include <dev/pci/pcivar.h> 49 #include <dev/pci/usb_pci.h> 50 51 #include <dev/usb/usb.h> 52 #include <dev/usb/usbdi.h> 53 #include <dev/usb/usbdivar.h> 54 #include <dev/usb/usb_mem.h> 55 56 #include <dev/usb/ehcireg.h> 57 #include <dev/usb/ehcivar.h> 58 59 int ehci_pci_match(struct device *, struct cfdata *, void *); 60 void ehci_pci_attach(struct device *, struct device *, void *); 61 int ehci_pci_detach(device_ptr_t, int); 62 63 struct ehci_pci_softc { 64 ehci_softc_t sc; 65 pci_chipset_tag_t sc_pc; 66 pcitag_t sc_tag; 67 void *sc_ih; /* interrupt vectoring */ 68 }; 69 70 struct cfattach ehci_pci_ca = { 71 sizeof(struct ehci_pci_softc), ehci_pci_match, ehci_pci_attach, 72 ehci_pci_detach, ehci_activate 73 }; 74 75 static TAILQ_HEAD(, usb_pci) ehci_pci_alldevs = 76 TAILQ_HEAD_INITIALIZER(ehci_pci_alldevs); 77 78 int 79 ehci_pci_match(struct device *parent, struct cfdata *match, void *aux) 80 { 81 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 82 83 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 84 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 85 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_EHCI) 86 return (1); 87 88 return (0); 89 } 90 91 void 92 ehci_pci_attach(struct device *parent, struct device *self, void *aux) 93 { 94 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 95 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 96 pci_chipset_tag_t pc = pa->pa_pc; 97 pcitag_t tag = pa->pa_tag; 98 char const *intrstr; 99 pci_intr_handle_t ih; 100 pcireg_t csr; 101 char *vendor; 102 char *devname = sc->sc.sc_bus.bdev.dv_xname; 103 char devinfo[256]; 104 usbd_status r; 105 106 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 107 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 108 109 /* Map I/O registers */ 110 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 111 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 112 printf("%s: can't map i/o space\n", devname); 113 return; 114 } 115 116 sc->sc_pc = pc; 117 sc->sc_tag = tag; 118 sc->sc.sc_bus.dmatag = pa->pa_dmat; 119 120 /* Enable the device. */ 121 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 122 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 123 csr | PCI_COMMAND_MASTER_ENABLE); 124 125 sc->sc.sc_offs = bus_space_read_1(sc->sc.iot, sc->sc.ioh, EHCI_CAPLENGTH); 126 127 /* Disable interrupts, so we don't get any spurious ones. */ 128 EOWRITE2(&sc->sc, EHCI_USBINTR, 0); 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, ehci_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 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 147 case PCI_USBREV_PRE_1_0: 148 case PCI_USBREV_1_0: 149 case PCI_USBREV_1_1: 150 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 151 printf("%s: pre-2.0 USB rev\n", devname); 152 return; 153 case PCI_USBREV_2_0: 154 sc->sc.sc_bus.usbrev = USBREV_2_0; 155 break; 156 default: 157 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 158 break; 159 } 160 161 /* Figure out vendor for root hub descriptor. */ 162 vendor = pci_findvendor(pa->pa_id); 163 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 164 if (vendor) 165 strncpy(sc->sc.sc_vendor, vendor, 166 sizeof(sc->sc.sc_vendor) - 1); 167 else 168 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 169 PCI_VENDOR(pa->pa_id)); 170 171 r = ehci_init(&sc->sc); 172 if (r != USBD_NORMAL_COMPLETION) { 173 printf("%s: init failed, error=%d\n", devname, r); 174 return; 175 } 176 177 /* Attach usb device. */ 178 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 179 usbctlprint); 180 } 181 182 int 183 ehci_pci_detach(device_ptr_t self, int flags) 184 { 185 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 186 int rv; 187 188 rv = ehci_detach(&sc->sc, flags); 189 if (rv) 190 return (rv); 191 if (sc->sc_ih != NULL) { 192 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 193 sc->sc_ih = NULL; 194 } 195 if (sc->sc.sc_size) { 196 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 197 sc->sc.sc_size = 0; 198 } 199 return (0); 200 } 201 202 void 203 usb_pci_add(struct usb_pci *up, struct pci_attach_args *pa, struct usbd_bus *bu) 204 { 205 TAILQ_INSERT_TAIL(&ehci_pci_alldevs, up, next); 206 up->bus = pa->pa_bus; 207 up->device = pa->pa_device; 208 up->function = pa->pa_function; 209 up->usb = bu; 210 } 211 212 void 213 usb_pci_rem(struct usb_pci *up) 214 { 215 TAILQ_REMOVE(&ehci_pci_alldevs, up, next); 216 } 217
Indexes created Mon Sep 29 21:09:56 GMT 2025