| 1 | /* $NetBSD: fwohci_pci.c,v 1.43 2016/07/07 06:55:41 msaitoh 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 Matt Thomas of 3am Software Foundry. |
| 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 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <sys/cdefs.h> |
| 33 | __KERNEL_RCSID(0, "$NetBSD: fwohci_pci.c,v 1.43 2016/07/07 06:55:41 msaitoh Exp $" ); |
| 34 | |
| 35 | #include <sys/param.h> |
| 36 | #include <sys/bus.h> |
| 37 | #include <sys/device.h> |
| 38 | #include <sys/intr.h> |
| 39 | #include <sys/select.h> |
| 40 | #include <sys/socket.h> |
| 41 | #include <sys/systm.h> |
| 42 | |
| 43 | #include <dev/pci/pcidevs.h> |
| 44 | #include <dev/pci/pcireg.h> |
| 45 | #include <dev/pci/pcivar.h> |
| 46 | #include <dev/ieee1394/firewire.h> |
| 47 | #include <dev/ieee1394/firewirereg.h> |
| 48 | #include <dev/ieee1394/fwdma.h> |
| 49 | #include <dev/ieee1394/fwohcireg.h> |
| 50 | #include <dev/ieee1394/fwohcivar.h> |
| 51 | |
| 52 | struct fwohci_pci_softc { |
| 53 | struct fwohci_softc psc_sc; |
| 54 | |
| 55 | pci_chipset_tag_t psc_pc; |
| 56 | pcitag_t psc_tag; |
| 57 | |
| 58 | void *psc_ih; |
| 59 | }; |
| 60 | |
| 61 | static int fwohci_pci_match(device_t, cfdata_t, void *); |
| 62 | static void fwohci_pci_attach(device_t, device_t, void *); |
| 63 | static int fwohci_pci_detach(device_t, int); |
| 64 | |
| 65 | static bool fwohci_pci_suspend(device_t, const pmf_qual_t *); |
| 66 | static bool fwohci_pci_resume(device_t, const pmf_qual_t *); |
| 67 | |
| 68 | CFATTACH_DECL_NEW(fwohci_pci, sizeof(struct fwohci_pci_softc), |
| 69 | fwohci_pci_match, fwohci_pci_attach, fwohci_pci_detach, NULL); |
| 70 | |
| 71 | static int |
| 72 | fwohci_pci_match(device_t parent, cfdata_t match, void *aux) |
| 73 | { |
| 74 | struct pci_attach_args *pa = (struct pci_attach_args *) aux; |
| 75 | |
| 76 | /* |
| 77 | * XXX |
| 78 | * Firewire controllers used in some G3 PowerBooks hang the system |
| 79 | * when trying to discover devices - don't attach to those for now |
| 80 | * until someone with the right hardware can investigate |
| 81 | */ |
| 82 | if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_APPLE) && |
| 83 | (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_APPLE_PBG3_FW)) |
| 84 | return 0; |
| 85 | if (PCI_CLASS(pa->pa_class) == PCI_CLASS_SERIALBUS && |
| 86 | PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_SERIALBUS_FIREWIRE && |
| 87 | PCI_INTERFACE(pa->pa_class) == PCI_INTERFACE_OHCI) |
| 88 | return 1; |
| 89 | |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | static void |
| 94 | fwohci_pci_attach(device_t parent, device_t self, void *aux) |
| 95 | { |
| 96 | struct pci_attach_args *pa = (struct pci_attach_args *) aux; |
| 97 | struct fwohci_pci_softc *psc = device_private(self); |
| 98 | char const *intrstr; |
| 99 | pci_intr_handle_t ih; |
| 100 | uint32_t csr; |
| 101 | char intrbuf[PCI_INTRSTR_LEN]; |
| 102 | |
| 103 | pci_aprint_devinfo(pa, "IEEE 1394 Controller" ); |
| 104 | |
| 105 | fwohci_init(&psc->psc_sc); |
| 106 | |
| 107 | psc->psc_sc.fc.dev = self; |
| 108 | psc->psc_sc.fc.dmat = pa->pa_dmat; |
| 109 | psc->psc_pc = pa->pa_pc; |
| 110 | psc->psc_tag = pa->pa_tag; |
| 111 | |
| 112 | /* Map I/O registers */ |
| 113 | if (pci_mapreg_map(pa, PCI_OHCI_MAP_REGISTER, PCI_MAPREG_TYPE_MEM, 0, |
| 114 | &psc->psc_sc.bst, &psc->psc_sc.bsh, NULL, &psc->psc_sc.bssize)) { |
| 115 | aprint_error_dev(self, "can't map OHCI register space\n" ); |
| 116 | goto fail; |
| 117 | } |
| 118 | |
| 119 | /* Disable interrupts, so we don't get any spurious ones. */ |
| 120 | OWRITE(&psc->psc_sc, FWOHCI_INTMASKCLR, OHCI_INT_EN); |
| 121 | |
| 122 | /* Enable the device. */ |
| 123 | csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); |
| 124 | csr |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE; |
| 125 | pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, csr); |
| 126 | |
| 127 | /* |
| 128 | * Some Sun FireWire controllers have their intpin register |
| 129 | * bogusly set to 0, although it should be 3. Correct that. |
| 130 | */ |
| 131 | if ((PCI_VENDOR(pa->pa_id) == PCI_VENDOR_SUN) && |
| 132 | (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_SUN_FIREWIRE)) |
| 133 | if (pa->pa_intrpin == 0) |
| 134 | pa->pa_intrpin = 3; |
| 135 | |
| 136 | /* Map and establish the interrupt. */ |
| 137 | if (pci_intr_map(pa, &ih)) { |
| 138 | aprint_error_dev(self, "couldn't map interrupt\n" ); |
| 139 | goto fail; |
| 140 | } |
| 141 | intrstr = pci_intr_string(pa->pa_pc, ih, intrbuf, sizeof(intrbuf)); |
| 142 | psc->psc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, fwohci_intr, |
| 143 | &psc->psc_sc); |
| 144 | if (psc->psc_ih == NULL) { |
| 145 | aprint_error_dev(self, "couldn't establish interrupt" ); |
| 146 | if (intrstr != NULL) |
| 147 | aprint_error(" at %s" , intrstr); |
| 148 | aprint_error("\n" ); |
| 149 | goto fail; |
| 150 | } |
| 151 | aprint_normal_dev(self, "interrupting at %s\n" , intrstr); |
| 152 | |
| 153 | if (fwohci_attach(&psc->psc_sc) != 0) |
| 154 | goto fail; |
| 155 | |
| 156 | if (!pmf_device_register(self, fwohci_pci_suspend, fwohci_pci_resume)) |
| 157 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 158 | |
| 159 | return; |
| 160 | |
| 161 | fail: |
| 162 | /* In the event that we fail to attach, register a null pnp handler */ |
| 163 | if (!pmf_device_register(self, NULL, NULL)) |
| 164 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 165 | |
| 166 | return; |
| 167 | } |
| 168 | |
| 169 | static int |
| 170 | fwohci_pci_detach(device_t self, int flags) |
| 171 | { |
| 172 | struct fwohci_pci_softc *psc = device_private(self); |
| 173 | int rv; |
| 174 | |
| 175 | pmf_device_deregister(self); |
| 176 | rv = fwohci_detach(&psc->psc_sc, flags); |
| 177 | if (rv) |
| 178 | return rv; |
| 179 | |
| 180 | if (psc->psc_ih != NULL) { |
| 181 | pci_intr_disestablish(psc->psc_pc, psc->psc_ih); |
| 182 | psc->psc_ih = NULL; |
| 183 | } |
| 184 | if (psc->psc_sc.bssize) { |
| 185 | bus_space_unmap(psc->psc_sc.bst, psc->psc_sc.bsh, |
| 186 | psc->psc_sc.bssize); |
| 187 | psc->psc_sc.bssize = 0; |
| 188 | } |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static bool |
| 193 | fwohci_pci_suspend(device_t dv, const pmf_qual_t *qual) |
| 194 | { |
| 195 | struct fwohci_pci_softc *psc = device_private(dv); |
| 196 | int s; |
| 197 | |
| 198 | s = splbio(); |
| 199 | fwohci_stop(&psc->psc_sc); |
| 200 | splx(s); |
| 201 | |
| 202 | return true; |
| 203 | } |
| 204 | |
| 205 | static bool |
| 206 | fwohci_pci_resume(device_t dv, const pmf_qual_t *qual) |
| 207 | { |
| 208 | struct fwohci_pci_softc *psc = device_private(dv); |
| 209 | int s; |
| 210 | |
| 211 | s = splbio(); |
| 212 | fwohci_resume(&psc->psc_sc); |
| 213 | splx(s); |
| 214 | |
| 215 | return true; |
| 216 | } |
| 217 | |