1 /* $NetBSD: fwohci_pci.c,v 1.37 2010/03/29 03:05:27 kiyohara 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 1.37 2010/03/29 03:05:27 kiyohara 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 64 static bool fwohci_pci_suspend(device_t, const pmf_qual_t *); 65 static bool fwohci_pci_resume(device_t, const pmf_qual_t *); 66 67 CFATTACH_DECL_NEW(fwohci_pci, sizeof(struct fwohci_pci_softc), 68 fwohci_pci_match, fwohci_pci_attach, NULL, NULL); 69 70 static int 71 fwohci_pci_match(device_t parent, cfdata_t match, 72 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 devinfo[256]; 99 char const *intrstr; 100 pci_intr_handle_t ih; 101 u_int32_t csr; 102 103 aprint_naive(": IEEE 1394 Controller\n"); 104 105 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo)); 106 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, 107 PCI_REVISION(pa->pa_class)); 108 109 psc->psc_sc.fc.dev = self; 110 psc->psc_sc.fc.dmat = pa->pa_dmat; 111 psc->psc_pc = pa->pa_pc; 112 psc->psc_tag = pa->pa_tag; 113 114 /* Map I/O registers */ 115 if (pci_mapreg_map(pa, PCI_OHCI_MAP_REGISTER, PCI_MAPREG_TYPE_MEM, 0, 116 &psc->psc_sc.bst, &psc->psc_sc.bsh, 117 NULL, &psc->psc_sc.bssize)) { 118 aprint_error_dev(self, "can't map OHCI register space\n"); 119 goto fail; 120 } 121 122 /* Disable interrupts, so we don't get any spurious ones. */ 123 OWRITE(&psc->psc_sc, FWOHCI_INTMASKCLR, OHCI_INT_EN); 124 125 /* Enable the device. */ 126 csr = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG); 127 pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 128 csr | PCI_COMMAND_MASTER_ENABLE); 129 130 /* Map and establish the interrupt. */ 131 if (pci_intr_map(pa, &ih)) { 132 aprint_error_dev(self, "couldn't map interrupt\n"); 133 goto fail; 134 } 135 intrstr = pci_intr_string(pa->pa_pc, ih); 136 psc->psc_ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, fwohci_intr, 137 &psc->psc_sc); 138 if (psc->psc_ih == NULL) { 139 aprint_error_dev(self, "couldn't establish interrupt"); 140 if (intrstr != NULL) 141 aprint_error(" at %s", intrstr); 142 aprint_error("\n"); 143 goto fail; 144 } 145 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 146 147 if (!pmf_device_register(self, fwohci_pci_suspend, fwohci_pci_resume)) 148 aprint_error_dev(self, "couldn't establish power handler\n"); 149 150 if (fwohci_init(&psc->psc_sc) != 0) { 151 pci_intr_disestablish(pa->pa_pc, psc->psc_ih); 152 bus_space_unmap(psc->psc_sc.bst, psc->psc_sc.bsh, 153 psc->psc_sc.bssize); 154 } 155 156 return; 157 158 fail: 159 /* In the event that we fail to attach, register a null pnp handler */ 160 if (!pmf_device_register(self, NULL, NULL)) 161 aprint_error_dev(self, "couldn't establish power handler\n"); 162 163 return; 164 } 165 166 static bool 167 fwohci_pci_suspend(device_t dv, const pmf_qual_t *qual) 168 { 169 struct fwohci_pci_softc *psc = device_private(dv); 170 int s; 171 172 s = splbio(); 173 fwohci_stop(&psc->psc_sc); 174 splx(s); 175 176 return true; 177 } 178 179 static bool 180 fwohci_pci_resume(device_t dv, const pmf_qual_t *qual) 181 { 182 struct fwohci_pci_softc *psc = device_private(dv); 183 int s; 184 185 s = splbio(); 186 fwohci_resume(&psc->psc_sc); 187 splx(s); 188 189 return true; 190 } 191