ehci_pci.c revision 1.6
1 /* $NetBSD: ehci_pci.c,v 1.6 2001/11/13 07:48:42 lukem 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/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ehci_pci.c,v 1.6 2001/11/13 07:48:42 lukem 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 struct cfattach ehci_pci_ca = { 81 sizeof(struct ehci_pci_softc), ehci_pci_match, ehci_pci_attach, 82 ehci_pci_detach, ehci_activate 83 }; 84 85 static TAILQ_HEAD(, usb_pci) ehci_pci_alldevs = 86 TAILQ_HEAD_INITIALIZER(ehci_pci_alldevs); 87 88 int 89 ehci_pci_match(struct device *parent, struct cfdata *match, void *aux) 90 { 91 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 92 93 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 94 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 95 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_EHCI) 96 return (1); 97 98 return (0); 99 } 100 101 void 102 ehci_pci_attach(struct device *parent, struct device *self, void *aux) 103 { 104 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 105 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 106 pci_chipset_tag_t pc = pa->pa_pc; 107 pcitag_t tag = pa->pa_tag; 108 char const *intrstr; 109 pci_intr_handle_t ih; 110 pcireg_t csr; 111 char *vendor; 112 char *devname = sc->sc.sc_bus.bdev.dv_xname; 113 char devinfo[256]; 114 usbd_status r; 115 int ncomp; 116 struct usb_pci *up; 117 118 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 119 printf(": %s (rev. 0x%02x)\n", devinfo, PCI_REVISION(pa->pa_class)); 120 121 /* Map I/O registers */ 122 if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, 123 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { 124 printf("%s: can't map i/o space\n", devname); 125 return; 126 } 127 128 sc->sc_pc = pc; 129 sc->sc_tag = tag; 130 sc->sc.sc_bus.dmatag = pa->pa_dmat; 131 132 /* Enable the device. */ 133 csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); 134 pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, 135 csr | PCI_COMMAND_MASTER_ENABLE); 136 137 /* Disable interrupts, so we don't get any spurious ones. */ 138 sc->sc.sc_offs = EREAD1(&sc->sc, EHCI_CAPLENGTH); 139 DPRINTF(("%s: offs=%d\n", devname, sc->sc.sc_offs)); 140 EOWRITE2(&sc->sc, EHCI_USBINTR, 0); 141 142 /* Map and establish the interrupt. */ 143 if (pci_intr_map(pa, &ih)) { 144 printf("%s: couldn't map interrupt\n", devname); 145 return; 146 } 147 intrstr = pci_intr_string(pc, ih); 148 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ehci_intr, sc); 149 if (sc->sc_ih == NULL) { 150 printf("%s: couldn't establish interrupt", devname); 151 if (intrstr != NULL) 152 printf(" at %s", intrstr); 153 printf("\n"); 154 return; 155 } 156 printf("%s: interrupting at %s\n", devname, intrstr); 157 158 switch(pci_conf_read(pc, tag, PCI_USBREV) & PCI_USBREV_MASK) { 159 case PCI_USBREV_PRE_1_0: 160 case PCI_USBREV_1_0: 161 case PCI_USBREV_1_1: 162 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 163 printf("%s: pre-2.0 USB rev\n", devname); 164 return; 165 case PCI_USBREV_2_0: 166 sc->sc.sc_bus.usbrev = USBREV_2_0; 167 break; 168 default: 169 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 170 break; 171 } 172 173 /* Figure out vendor for root hub descriptor. */ 174 vendor = pci_findvendor(pa->pa_id); 175 sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); 176 if (vendor) 177 strncpy(sc->sc.sc_vendor, vendor, 178 sizeof(sc->sc.sc_vendor) - 1); 179 else 180 sprintf(sc->sc.sc_vendor, "vendor 0x%04x", 181 PCI_VENDOR(pa->pa_id)); 182 183 /* 184 * Find companion controllers. According to the spec they always 185 * have lower function numbers so they should be enumerated already. 186 */ 187 ncomp = 0; 188 TAILQ_FOREACH(up, &ehci_pci_alldevs, next) { 189 if (up->bus == pa->pa_bus && up->device == pa->pa_device) { 190 DPRINTF(("ehci_pci_attach: companion %s\n", 191 USBDEVNAME(up->usb->bdev))); 192 sc->sc.sc_comps[ncomp++] = up->usb; 193 if (ncomp >= EHCI_COMPANION_MAX) 194 break; 195 } 196 } 197 sc->sc.sc_ncomp = ncomp; 198 199 r = ehci_init(&sc->sc); 200 if (r != USBD_NORMAL_COMPLETION) { 201 printf("%s: init failed, error=%d\n", devname, r); 202 return; 203 } 204 205 /* Attach usb device. */ 206 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 207 usbctlprint); 208 } 209 210 int 211 ehci_pci_detach(device_ptr_t self, int flags) 212 { 213 struct ehci_pci_softc *sc = (struct ehci_pci_softc *)self; 214 int rv; 215 216 rv = ehci_detach(&sc->sc, flags); 217 if (rv) 218 return (rv); 219 if (sc->sc_ih != NULL) { 220 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 221 sc->sc_ih = NULL; 222 } 223 if (sc->sc.sc_size) { 224 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 225 sc->sc.sc_size = 0; 226 } 227 return (0); 228 } 229 230 void 231 usb_pci_add(struct usb_pci *up, struct pci_attach_args *pa, struct usbd_bus *bu) 232 { 233 TAILQ_INSERT_TAIL(&ehci_pci_alldevs, up, next); 234 up->bus = pa->pa_bus; 235 up->device = pa->pa_device; 236 up->function = pa->pa_function; 237 up->usb = bu; 238 } 239 240 void 241 usb_pci_rem(struct usb_pci *up) 242 { 243 TAILQ_REMOVE(&ehci_pci_alldevs, up, next); 244 } 245
Indexes created Sat Sep 27 22:09:54 GMT 2025