1 /* $OpenBSD: uhci_pci.c,v 1.12 2001/08/25 10:13:30 art Exp $ */ 2 /* $NetBSD: uhci_pci.c,v 1.14 2000/01/25 11:26:06 augustss Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart@augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/proc.h> 46 #include <sys/queue.h> 47 48 #include <machine/bus.h> 49 50 #include <dev/pci/pcivar.h> 51 52 #include <dev/usb/usb.h> 53 #include <dev/usb/usbdi.h> 54 #include <dev/usb/usbdivar.h> 55 #include <dev/usb/usb_mem.h> 56 57 #include <dev/usb/uhcireg.h> 58 #include <dev/usb/uhcivar.h> 59 60 int uhci_pci_match __P((struct device *, void *, void *)); 61 void uhci_pci_attach __P((struct device *, struct device *, void *)); 62 int uhci_pci_detach __P((device_ptr_t, int)); 63 64 struct uhci_pci_softc { 65 uhci_softc_t sc; 66 pci_chipset_tag_t sc_pc; 67 void *sc_ih; /* interrupt vectoring */ 68 }; 69 70 struct cfattach uhci_pci_ca = { 71 sizeof(struct uhci_pci_softc), uhci_pci_match, uhci_pci_attach, 72 uhci_pci_detach, uhci_activate 73 }; 74 75 int 76 uhci_pci_match(parent, match, aux) 77 struct device *parent; 78 void *match, *aux; 79 { 80 struct pci_attach_args *pa = (struct pci_attach_args *) aux; 81 82 if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && 83 PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && 84 PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_UHCI) 85 return (1); 86 87 return (0); 88 } 89 90 void 91 uhci_pci_attach(parent, self, aux) 92 struct device *parent; 93 struct device *self; 94 void *aux; 95 { 96 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 97 struct pci_attach_args *pa = (struct pci_attach_args *)aux; 98 pci_chipset_tag_t pc = pa->pa_pc; 99 char const *intrstr; 100 pci_intr_handle_t ih; 101 pcireg_t csr, legsup; 102 usbd_status r; 103 104 105 /* Map I/O registers */ 106 if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, 107 &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size, 0)) { 108 printf(": can't map i/o space\n"); 109 return; 110 } 111 112 /* Disable interrupts, so we don't get any spurious ones. */ 113 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 114 115 sc->sc_pc = pc; 116 sc->sc.sc_bus.dmatag = pa->pa_dmat; 117 118 /* Enable the device. */ 119 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 120 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 121 csr | PCI_COMMAND_MASTER_ENABLE); 122 123 /* Verify that the PIRQD enable bit is set, some BIOS's don't do that*/ 124 legsup = pci_conf_read(pc, pa->pa_tag, PCI_LEGSUP); 125 if (!(legsup & PCI_LEGSUP_USBPIRQDEN)) { 126 legsup = PCI_LEGSUP_USBPIRQDEN; 127 pci_conf_write(pc, pa->pa_tag, PCI_LEGSUP, legsup); 128 } 129 130 switch(pci_conf_read(pc, pa->pa_tag, PCI_USBREV) & PCI_USBREV_MASK) { 131 case PCI_USBREV_PRE_1_0: 132 sc->sc.sc_bus.usbrev = USBREV_PRE_1_0; 133 break; 134 case PCI_USBREV_1_0: 135 sc->sc.sc_bus.usbrev = USBREV_1_0; 136 break; 137 case PCI_USBREV_1_1: 138 sc->sc.sc_bus.usbrev = USBREV_1_1; 139 break; 140 default: 141 sc->sc.sc_bus.usbrev = USBREV_UNKNOWN; 142 break; 143 } 144 145 uhci_run(&sc->sc, 0); /* stop the controller */ 146 /* disable interrupts */ 147 bus_space_barrier(sc->sc.iot, sc->sc.ioh, 0, sc->sc.sc_size, 148 BUS_SPACE_BARRIER_READ|BUS_SPACE_BARRIER_WRITE); 149 bus_space_write_2(sc->sc.iot, sc->sc.ioh, UHCI_INTR, 0); 150 151 /* Map and establish the interrupt. */ 152 if (pci_intr_map(pa, &ih)) { 153 printf(": couldn't map interrupt\n"); 154 return; 155 } 156 intrstr = pci_intr_string(pc, ih); 157 sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, uhci_intr, sc, 158 sc->sc.sc_bus.bdev.dv_xname); 159 if (sc->sc_ih == NULL) { 160 printf(": couldn't establish interrupt"); 161 if (intrstr != NULL) 162 printf(" at %s", intrstr); 163 printf("\n"); 164 return; 165 } 166 printf(": %s\n", intrstr); 167 168 r = uhci_init(&sc->sc); 169 if (r != USBD_NORMAL_COMPLETION) { 170 printf(": init failed, error=%d\n", r); 171 return; 172 } 173 174 /* Attach usb device. */ 175 sc->sc.sc_child = config_found((void *)sc, &sc->sc.sc_bus, 176 usbctlprint); 177 } 178 179 int 180 uhci_pci_detach(self, flags) 181 device_ptr_t self; 182 int flags; 183 { 184 struct uhci_pci_softc *sc = (struct uhci_pci_softc *)self; 185 int rv; 186 187 rv = uhci_detach(&sc->sc, flags); 188 if (rv) 189 return (rv); 190 if (sc->sc_ih != NULL) { 191 pci_intr_disestablish(sc->sc_pc, sc->sc_ih); 192 sc->sc_ih = NULL; 193 } 194 if (sc->sc.sc_size) { 195 bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); 196 sc->sc.sc_size = 0; 197 } 198 return (0); 199 } 200