| 1 | /* $NetBSD: ohci_pci.c,v 1.55 2016/04/23 10:15:31 skrll Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1998 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@augustsson.net) at |
| 9 | * Carlstedt Research & Technology. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 30 | * POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #include <sys/cdefs.h> |
| 34 | __KERNEL_RCSID(0, "$NetBSD: ohci_pci.c,v 1.55 2016/04/23 10:15:31 skrll Exp $" ); |
| 35 | |
| 36 | #include "ehci.h" |
| 37 | |
| 38 | #include <sys/param.h> |
| 39 | #include <sys/systm.h> |
| 40 | #include <sys/kernel.h> |
| 41 | #include <sys/device.h> |
| 42 | #include <sys/proc.h> |
| 43 | #include <sys/queue.h> |
| 44 | |
| 45 | #include <sys/bus.h> |
| 46 | |
| 47 | #include <dev/pci/pcivar.h> |
| 48 | #include <dev/pci/pcidevs.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/ohcireg.h> |
| 57 | #include <dev/usb/ohcivar.h> |
| 58 | |
| 59 | struct ohci_pci_softc { |
| 60 | ohci_softc_t sc; |
| 61 | #if NEHCI > 0 |
| 62 | struct usb_pci sc_pci; |
| 63 | #endif |
| 64 | pci_chipset_tag_t sc_pc; |
| 65 | pcitag_t sc_tag; |
| 66 | void *sc_ih; /* interrupt vectoring */ |
| 67 | }; |
| 68 | |
| 69 | static int |
| 70 | ohci_pci_match(device_t parent, cfdata_t match, void *aux) |
| 71 | { |
| 72 | struct pci_attach_args *pa = (struct pci_attach_args *) aux; |
| 73 | |
| 74 | if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && |
| 75 | PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_USB && |
| 76 | PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI) |
| 77 | return 1; |
| 78 | |
| 79 | return 0; |
| 80 | } |
| 81 | |
| 82 | static void |
| 83 | ohci_pci_attach(device_t parent, device_t self, void *aux) |
| 84 | { |
| 85 | struct ohci_pci_softc *sc = device_private(self); |
| 86 | struct pci_attach_args *pa = (struct pci_attach_args *)aux; |
| 87 | pci_chipset_tag_t pc = pa->pa_pc; |
| 88 | pcitag_t tag = pa->pa_tag; |
| 89 | char const *intrstr; |
| 90 | pci_intr_handle_t ih; |
| 91 | pcireg_t csr; |
| 92 | char intrbuf[PCI_INTRSTR_LEN]; |
| 93 | |
| 94 | sc->sc.sc_dev = self; |
| 95 | sc->sc.sc_bus.ub_hcpriv = sc; |
| 96 | |
| 97 | if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_NS && |
| 98 | PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_NS_USB) { |
| 99 | sc->sc.sc_flags = OHCIF_SUPERIO; |
| 100 | } |
| 101 | |
| 102 | pci_aprint_devinfo(pa, "USB Controller" ); |
| 103 | |
| 104 | /* check if memory space access is enabled */ |
| 105 | csr = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG); |
| 106 | #ifdef DEBUG |
| 107 | printf("csr: %08x\n" , csr); |
| 108 | #endif |
| 109 | if ((csr & PCI_COMMAND_MEM_ENABLE) == 0) { |
| 110 | aprint_error_dev(self, "memory access is disabled\n" ); |
| 111 | return; |
| 112 | } |
| 113 | |
| 114 | /* Map I/O registers */ |
| 115 | if (pci_mapreg_map(pa, PCI_CBMEM, PCI_MAPREG_TYPE_MEM, 0, |
| 116 | &sc->sc.iot, &sc->sc.ioh, NULL, &sc->sc.sc_size)) { |
| 117 | sc->sc.sc_size = 0; |
| 118 | aprint_error_dev(self, "can't map mem space\n" ); |
| 119 | return; |
| 120 | } |
| 121 | |
| 122 | /* Disable interrupts, so we don't get any spurious ones. */ |
| 123 | bus_space_write_4(sc->sc.iot, sc->sc.ioh, OHCI_INTERRUPT_DISABLE, |
| 124 | OHCI_ALL_INTRS); |
| 125 | |
| 126 | sc->sc_pc = pc; |
| 127 | sc->sc_tag = tag; |
| 128 | sc->sc.sc_bus.ub_dmatag = pa->pa_dmat; |
| 129 | |
| 130 | /* Enable the device. */ |
| 131 | pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, |
| 132 | csr | PCI_COMMAND_MASTER_ENABLE); |
| 133 | |
| 134 | /* Map and establish the interrupt. */ |
| 135 | if (pci_intr_map(pa, &ih)) { |
| 136 | aprint_error_dev(self, "couldn't map interrupt\n" ); |
| 137 | goto fail; |
| 138 | } |
| 139 | |
| 140 | /* |
| 141 | * Allocate IRQ |
| 142 | */ |
| 143 | intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); |
| 144 | sc->sc_ih = pci_intr_establish(pc, ih, IPL_USB, ohci_intr, sc); |
| 145 | if (sc->sc_ih == NULL) { |
| 146 | aprint_error_dev(self, "couldn't establish interrupt" ); |
| 147 | if (intrstr != NULL) |
| 148 | aprint_error(" at %s" , intrstr); |
| 149 | aprint_error("\n" ); |
| 150 | goto fail; |
| 151 | } |
| 152 | aprint_normal_dev(self, "interrupting at %s\n" , intrstr); |
| 153 | |
| 154 | /* Figure out vendor for root hub descriptor. */ |
| 155 | sc->sc.sc_id_vendor = PCI_VENDOR(pa->pa_id); |
| 156 | pci_findvendor(sc->sc.sc_vendor, sizeof(sc->sc.sc_vendor), |
| 157 | sc->sc.sc_id_vendor); |
| 158 | int err = ohci_init(&sc->sc); |
| 159 | if (err) { |
| 160 | aprint_error_dev(self, "init failed, error=%d\n" , err); |
| 161 | goto fail; |
| 162 | } |
| 163 | |
| 164 | #if NEHCI > 0 |
| 165 | usb_pci_add(&sc->sc_pci, pa, self); |
| 166 | #endif |
| 167 | |
| 168 | if (!pmf_device_register1(self, ohci_suspend, ohci_resume, |
| 169 | ohci_shutdown)) |
| 170 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 171 | |
| 172 | /* Attach usb device. */ |
| 173 | sc->sc.sc_child = config_found(self, &sc->sc.sc_bus, usbctlprint); |
| 174 | return; |
| 175 | |
| 176 | fail: |
| 177 | if (sc->sc_ih) { |
| 178 | pci_intr_disestablish(sc->sc_pc, sc->sc_ih); |
| 179 | sc->sc_ih = NULL; |
| 180 | } |
| 181 | if (sc->sc.sc_size) { |
| 182 | bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); |
| 183 | sc->sc.sc_size = 0; |
| 184 | } |
| 185 | return; |
| 186 | } |
| 187 | |
| 188 | static int |
| 189 | ohci_pci_detach(device_t self, int flags) |
| 190 | { |
| 191 | struct ohci_pci_softc *sc = device_private(self); |
| 192 | int rv; |
| 193 | |
| 194 | rv = ohci_detach(&sc->sc, flags); |
| 195 | if (rv) |
| 196 | return rv; |
| 197 | |
| 198 | pmf_device_deregister(self); |
| 199 | |
| 200 | ohci_shutdown(self, flags); |
| 201 | |
| 202 | if (sc->sc.sc_size) { |
| 203 | /* Disable interrupts, so we don't get any spurious ones. */ |
| 204 | bus_space_write_4(sc->sc.iot, sc->sc.ioh, |
| 205 | OHCI_INTERRUPT_DISABLE, OHCI_ALL_INTRS); |
| 206 | } |
| 207 | |
| 208 | if (sc->sc_ih != NULL) { |
| 209 | pci_intr_disestablish(sc->sc_pc, sc->sc_ih); |
| 210 | sc->sc_ih = NULL; |
| 211 | } |
| 212 | if (sc->sc.sc_size) { |
| 213 | bus_space_unmap(sc->sc.iot, sc->sc.ioh, sc->sc.sc_size); |
| 214 | sc->sc.sc_size = 0; |
| 215 | } |
| 216 | #if NEHCI > 0 |
| 217 | usb_pci_rem(&sc->sc_pci); |
| 218 | #endif |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | CFATTACH_DECL3_NEW(ohci_pci, sizeof(struct ohci_pci_softc), |
| 223 | ohci_pci_match, ohci_pci_attach, ohci_pci_detach, ohci_activate, NULL, |
| 224 | ohci_childdet, DVF_DETACH_SHUTDOWN); |
| 225 | |