ehci_pci.c revision 1.13.2.5
1 /* $NetBSD: ehci_pci.c,v 1.13.2.5 2005/11/10 14:06:01 skrll 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 1.13.2.5 2005/11/10 14:06:01 skrll 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 struct ehci_pci_softc { 70 ehci_softc_t sc; 71 pci_chipset_tag_t sc_pc; 72 pcitag_t sc_tag; 73 void *sc_ih; /* interrupt vectoring */ 74 }; 75 76 static int 77 ehci_pci_match(struct device *parent, struct cfdata *match, void *aux) 78 { 79 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 80 81 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 82 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 83 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_EHCI) 84 return (1); 85 86 return (0); 87 } 88 89 static void 90 ehci_pci_attach(struct device *parent, struct device *self, void *aux) 91 { 92 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 93 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 94 pci_chipset_tag_t pc = pa->pa_pc; 95 pcitag_t tag = pa->pa_tag; 96 char const *intrstr; 97 pci_intr_handle_t ih; 98 pcireg_t csr; 99 const char *vendor; 100 const char *devname = sc->sc.sc_bus.bdev.dv_xname; 101 char devinfo[256]; 102 usbd_status r; 103 int ncomp; 104 struct usb_pci *up; 105 106 aprint_naive(": USB controller\n"); 107 108 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 109 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, 110 PCI_REVISION(pa->pa_class)); 111 112 /* Map I/O registers */ 113 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 114 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 115 aprint_error("%s: can't map memory space\n", devname); 116 return; 117 } 118 119 sc->sc_pc = pc; 120 sc->sc_tag = tag; 121 sc->sc.sc_bus.dmatag = pa->pa_dmat; 122 123 /* Enable the device. */ 124 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 125 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 126 csr | PCI_COMMAND_MASTER_ENABLE); 127 128 /* Disable interrupts, so we don't get any spurious ones. */ 129 sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH); 130 DPRINTF(("%s: offs=%d\n", devname, sc->sc.sc_offs)); 131 EOWRITE2(&sc->sc, EHCI_USBINTR, 0); 132 133 /* Map and establish the interrupt. */ 134 if (pci_intr_map(pa, &ih)) { 135 aprint_error("%s: couldn't map interrupt\n", devname); 136 return; 137 } 138 intrstr = pci_intr_string(pc, ih); 139 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ehci_intr, sc); 140 if (sc->sc_ih == NULL) { 141 aprint_error("%s: couldn't establish interrupt", devname); 142 if (intrstr != NULL) 143 aprint_normal(" at %s", intrstr); 144 aprint_normal("\n"); 145 return; 146 } 147 aprint_normal("%s: interrupting at %s\n", devname, intrstr); 148 149 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 150 case PCI_USBREV_PRE_1_0: 151 case PCI_USBREV_1_0: 152 case PCI_USBREV_1_1: 153 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 154 aprint_normal("%s: pre-2.0 USB rev\n", devname); 155 return; 156 case PCI_USBREV_2_0: 157 sc->sc.sc_bus.usbrev = USBREV_2_0; 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 /* 174 * Find companion controllers. According to the spec they always 175 * have lower function numbers so they should be enumerated already. 176 */ 177 ncomp = 0; 178 TAILQ_FOREACH(up, &ehci_pci_alldevs, next) { 179 if (up->bus == pa->pa_bus && up->device == pa->pa_device) { 180 DPRINTF(("ehci_pci_attach: companion %s\n", 181 USBDEVNAME(up->usb->bdev))); 182 sc->sc.sc_comps[ncomp++] = up->usb; 183 if (ncomp >= EHCI_COMPANION_MAX) 184 break; 185 } 186 } 187 sc->sc.sc_ncomp = ncomp; 188 189 r = ehci_init(&sc->sc); 190 if (r != USBD_NORMAL_COMPLETION) { 191 aprint_error("%s: init failed, error=%d\n", devname, r); 192 return; 193 } 194 195 /* Attach usb device. */ 196 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 197 usbctlprint); 198 } 199 200 static int 201 ehci_pci_detach(device_ptr_t self, int flags) 202 { 203 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 204 int rv; 205 206 rv = ehci_detach(&sc->sc, flags); 207 if (rv) 208 return (rv); 209 if (sc->sc_ih != NULL) { 210 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 211 sc->sc_ih = NULL; 212 } 213 if (sc->sc.sc_size) { 214 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 215 sc->sc.sc_size = 0; 216 } 217 return (0); 218 } 219 220 CFATTACH_DECL(ehci_pci, sizeof(struct ehci_pci_softc), 221 ehci_pci_match, ehci_pci_attach, ehci_pci_detach, ehci_activate); 222
Indexes created Sat Oct 11 14:09:46 GMT 2025