ehci_pci.c revision 1.14
1 /* $NetBSD: ehci_pci.c,v 1.14 2004/04/22 00:17:12 itojun 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 1.14 2004/04/22 00:17:12 itojun 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 aprint_naive(": USB controller\n"); 114 115 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 116 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, 117 PCI_REVISION(pa->pa_class)); 118 119 /* Map I/O registers */ 120 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 121 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 122 aprint_error("%s: can't map memory space\n", devname); 123 return; 124 } 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 /* Disable interrupts, so we don't get any spurious ones. */ 136 sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH); 137 DPRINTF(("%s: offs=%d\n", devname, sc->sc.sc_offs)); 138 EOWRITE2(&sc->sc, EHCI_USBINTR, 0); 139 140 /* Map and establish the interrupt. */ 141 if (pci_intr_map(pa, &ih)) { 142 aprint_error("%s: couldn't map interrupt\n", devname); 143 return; 144 } 145 intrstr = pci_intr_string(pc, ih); 146 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ehci_intr, sc); 147 if (sc->sc_ih == NULL) { 148 aprint_error("%s: couldn't establish interrupt", devname); 149 if (intrstr != NULL) 150 aprint_normal(" at %s", intrstr); 151 aprint_normal("\n"); 152 return; 153 } 154 aprint_normal("%s: interrupting at %s\n", devname, intrstr); 155 156 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 157 case PCI_USBREV_PRE_1_0: 158 case PCI_USBREV_1_0: 159 case PCI_USBREV_1_1: 160 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 161 aprint_normal("%s: pre-2.0 USB rev\n", devname); 162 return; 163 case PCI_USBREV_2_0: 164 sc->sc.sc_bus.usbrev = USBREV_2_0; 165 break; 166 default: 167 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 168 break; 169 } 170 171 /* Figure out vendor for root hub descriptor. */ 172 vendor = pci_findvendor(pa->pa_id); 173 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 174 if (vendor) 175 strlcpy(sc->sc.sc_vendor, vendor, sizeof(sc->sc.sc_vendor)); 176 else 177 snprintf(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor), 178 "vendor 0x%04x", PCI_VENDOR(pa->pa_id)); 179 180 /* 181 * Find companion controllers. According to the spec they always 182 * have lower function numbers so they should be enumerated already. 183 */ 184 ncomp = 0; 185 TAILQ_FOREACH(up, &ehci_pci_alldevs, next) { 186 if (up->bus == pa->pa_bus && up->device == pa->pa_device) { 187 DPRINTF(("ehci_pci_attach: companion %s\n", 188 USBDEVNAME(up->usb->bdev))); 189 sc->sc.sc_comps[ncomp++] = up->usb; 190 if (ncomp >= EHCI_COMPANION_MAX) 191 break; 192 } 193 } 194 sc->sc.sc_ncomp = ncomp; 195 196 r = ehci_init(&sc->sc); 197 if (r != USBD_NORMAL_COMPLETION) { 198 aprint_error("%s: init failed, error=%d\n", devname, r); 199 return; 200 } 201 202 /* Attach usb device. */ 203 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 204 usbctlprint); 205 } 206 207 int 208 ehci_pci_detach(device_ptr_t self, int flags) 209 { 210 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 211 int rv; 212 213 rv = ehci_detach(&sc->sc, flags); 214 if (rv) 215 return (rv); 216 if (sc->sc_ih != NULL) { 217 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 218 sc->sc_ih = NULL; 219 } 220 if (sc->sc.sc_size) { 221 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 222 sc->sc.sc_size = 0; 223 } 224 return (0); 225 } 226
Indexes created Sat Sep 27 22:09:54 GMT 2025