1 /*- 2 * Copyright (c) 2000 Michael Smith 3 * Copyright (c) 2000 BSDi 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD: src/sys/dev/acpica/acpi_pcib_pci.c,v 1.17.8.1 2009/04/15 03:14:26 kensmith Exp $ 28 */ 29 30 #include "opt_acpi.h" 31 32 #include <sys/param.h> 33 #include <sys/bus.h> 34 #include <sys/kernel.h> 35 #include <sys/malloc.h> 36 #include <sys/module.h> 37 #include <sys/rman.h> 38 39 #include "acpi.h" 40 #include <dev/acpica/acpivar.h> 41 #include <dev/acpica/acpi_pcibvar.h> 42 43 #include <bus/pci/pcivar.h> 44 #include <bus/pci/pcireg.h> 45 #include <bus/pci/pcib_private.h> 46 #include "pcib_if.h" 47 48 /* Hooks for the ACPICA debugging infrastructure. */ 49 #define _COMPONENT ACPI_BUS 50 ACPI_MODULE_NAME("PCI_PCI") 51 52 struct acpi_pcib_softc { 53 struct pcib_softc ap_pcibsc; 54 ACPI_HANDLE ap_handle; 55 ACPI_BUFFER ap_prt; /* interrupt routing table */ 56 }; 57 58 struct acpi_pcib_lookup_info { 59 UINT32 address; 60 ACPI_HANDLE handle; 61 }; 62 63 static int acpi_pcib_pci_probe(device_t bus); 64 static int acpi_pcib_pci_attach(device_t bus); 65 static int acpi_pcib_pci_resume(device_t bus); 66 static int acpi_pcib_read_ivar(device_t dev, device_t child, 67 int which, uintptr_t *result); 68 static int acpi_pcib_pci_route_interrupt(device_t pcib, 69 device_t dev, int pin); 70 71 static device_method_t acpi_pcib_pci_methods[] = { 72 /* Device interface */ 73 DEVMETHOD(device_probe, acpi_pcib_pci_probe), 74 DEVMETHOD(device_attach, acpi_pcib_pci_attach), 75 DEVMETHOD(device_resume, acpi_pcib_pci_resume), 76 77 /* Bus interface */ 78 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar), 79 80 /* pcib interface */ 81 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt), 82 83 DEVMETHOD_END 84 }; 85 86 static devclass_t pcib_devclass; 87 88 DEFINE_CLASS_1(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods, 89 sizeof(struct acpi_pcib_softc), pcib_driver); 90 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, NULL, NULL); 91 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1); 92 93 static int 94 acpi_pcib_pci_probe(device_t dev) 95 { 96 int error; 97 98 if (pci_get_class(dev) != PCIC_BRIDGE || 99 pci_get_subclass(dev) != PCIS_BRIDGE_PCI || 100 acpi_disabled("pci")) 101 return (ENXIO); 102 103 error = acpi_pcib_probe(dev); 104 if (error) 105 return (error); 106 107 device_set_desc(dev, "ACPI PCI-PCI bridge"); 108 return (-100); 109 } 110 111 static int 112 acpi_pcib_pci_attach(device_t dev) 113 { 114 struct acpi_pcib_softc *sc; 115 116 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 117 118 pcib_attach_common(dev); 119 sc = device_get_softc(dev); 120 sc->ap_handle = acpi_get_handle(dev); 121 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus)); 122 } 123 124 static int 125 acpi_pcib_pci_resume(device_t dev) 126 { 127 return (acpi_pcib_resume(dev)); 128 } 129 130 static int 131 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 132 { 133 struct acpi_pcib_softc *sc = device_get_softc(dev); 134 135 switch (which) { 136 case ACPI_IVAR_HANDLE: 137 *result = (uintptr_t)sc->ap_handle; 138 return (0); 139 } 140 return (pcib_read_ivar(dev, child, which, result)); 141 } 142 143 static int 144 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin) 145 { 146 struct acpi_pcib_softc *sc = device_get_softc(pcib); 147 148 /* 149 * If we don't have a _PRT, fall back to the swizzle method 150 * for routing interrupts. 151 */ 152 if (sc->ap_prt.Pointer == NULL) { 153 device_printf(pcib, "No _PRT found, routing with pci\n"); 154 return (pcib_route_interrupt(pcib, dev, pin)); 155 } else { 156 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 157 } 158 } 159