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 static int acpi_pcib_pci_probe(device_t bus); 59 static int acpi_pcib_pci_attach(device_t bus); 60 static int acpi_pcib_pci_resume(device_t bus); 61 static int acpi_pcib_read_ivar(device_t dev, device_t child, 62 int which, uintptr_t *result); 63 static int acpi_pcib_pci_route_interrupt(device_t pcib, 64 device_t dev, int pin); 65 66 static device_method_t acpi_pcib_pci_methods[] = { 67 /* Device interface */ 68 DEVMETHOD(device_probe, acpi_pcib_pci_probe), 69 DEVMETHOD(device_attach, acpi_pcib_pci_attach), 70 DEVMETHOD(device_resume, acpi_pcib_pci_resume), 71 72 /* Bus interface */ 73 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar), 74 75 /* pcib interface */ 76 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt), 77 78 DEVMETHOD_END 79 }; 80 81 static devclass_t pcib_devclass; 82 83 DEFINE_CLASS_1(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods, 84 sizeof(struct acpi_pcib_softc), pcib_driver); 85 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, NULL, NULL); 86 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1); 87 88 static int 89 acpi_pcib_pci_probe(device_t dev) 90 { 91 int error; 92 93 if (pci_get_class(dev) != PCIC_BRIDGE || 94 pci_get_subclass(dev) != PCIS_BRIDGE_PCI || 95 acpi_disabled("pci")) 96 return (ENXIO); 97 98 error = acpi_pcib_probe(dev); 99 if (error) 100 return (error); 101 102 device_set_desc(dev, "ACPI PCI-PCI bridge"); 103 return (-100); 104 } 105 106 static int 107 acpi_pcib_pci_attach(device_t dev) 108 { 109 struct acpi_pcib_softc *sc; 110 111 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 112 113 pcib_attach_common(dev); 114 sc = device_get_softc(dev); 115 sc->ap_handle = acpi_get_handle(dev); 116 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus)); 117 } 118 119 static int 120 acpi_pcib_pci_resume(device_t dev) 121 { 122 return (acpi_pcib_resume(dev)); 123 } 124 125 static int 126 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 127 { 128 struct acpi_pcib_softc *sc = device_get_softc(dev); 129 130 switch (which) { 131 case ACPI_IVAR_HANDLE: 132 *result = (uintptr_t)sc->ap_handle; 133 return (0); 134 } 135 return (pcib_read_ivar(dev, child, which, result)); 136 } 137 138 static int 139 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin) 140 { 141 struct acpi_pcib_softc *sc = device_get_softc(pcib); 142 143 /* 144 * If we don't have a _PRT, fall back to the swizzle method 145 * for routing interrupts. 146 */ 147 if (sc->ap_prt.Pointer == NULL) { 148 device_printf(pcib, "No _PRT found, routing with pci\n"); 149 return (pcib_route_interrupt(pcib, dev, pin)); 150 } else { 151 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 152 } 153 } 154