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 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include "opt_acpi.h" 32 33 #include <sys/param.h> 34 #include <sys/bus.h> 35 #include <sys/kernel.h> 36 #include <sys/malloc.h> 37 #include <sys/module.h> 38 #include <sys/rman.h> 39 40 #include <contrib/dev/acpica/include/acpi.h> 41 #include <contrib/dev/acpica/include/accommon.h> 42 43 #include <dev/acpica/acpivar.h> 44 #include <dev/acpica/acpi_pcibvar.h> 45 46 #include <machine/pci_cfgreg.h> 47 #include <dev/pci/pcivar.h> 48 #include <dev/pci/pcireg.h> 49 #include <dev/pci/pcib_private.h> 50 #include "pcib_if.h" 51 52 /* Hooks for the ACPI CA debugging infrastructure. */ 53 #define _COMPONENT ACPI_BUS 54 ACPI_MODULE_NAME("PCI_PCI") 55 56 struct acpi_pcib_softc { 57 struct pcib_softc ap_pcibsc; 58 ACPI_HANDLE ap_handle; 59 ACPI_BUFFER ap_prt; /* interrupt routing table */ 60 }; 61 62 struct acpi_pcib_lookup_info { 63 UINT32 address; 64 ACPI_HANDLE handle; 65 }; 66 67 static int acpi_pcib_pci_probe(device_t bus); 68 static int acpi_pcib_pci_attach(device_t bus); 69 static int acpi_pcib_pci_detach(device_t bus); 70 static int acpi_pcib_read_ivar(device_t dev, device_t child, 71 int which, uintptr_t *result); 72 static int acpi_pcib_pci_route_interrupt(device_t pcib, 73 device_t dev, int pin); 74 75 static device_method_t acpi_pcib_pci_methods[] = { 76 /* Device interface */ 77 DEVMETHOD(device_probe, acpi_pcib_pci_probe), 78 DEVMETHOD(device_attach, acpi_pcib_pci_attach), 79 DEVMETHOD(device_detach, acpi_pcib_pci_detach), 80 81 /* Bus interface */ 82 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar), 83 DEVMETHOD(bus_get_cpus, acpi_pcib_get_cpus), 84 85 /* pcib interface */ 86 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt), 87 DEVMETHOD(pcib_power_for_sleep, acpi_pcib_power_for_sleep), 88 89 DEVMETHOD_END 90 }; 91 92 DEFINE_CLASS_1(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods, 93 sizeof(struct acpi_pcib_softc), pcib_driver); 94 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, 0, 0); 95 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1); 96 97 static int 98 acpi_pcib_pci_probe(device_t dev) 99 { 100 101 if (pci_get_class(dev) != PCIC_BRIDGE || 102 pci_get_subclass(dev) != PCIS_BRIDGE_PCI || 103 acpi_disabled("pci")) 104 return (ENXIO); 105 if (acpi_get_handle(dev) == NULL) 106 return (ENXIO); 107 if (pci_cfgregopen() == 0) 108 return (ENXIO); 109 110 device_set_desc(dev, "ACPI PCI-PCI bridge"); 111 return (-1000); 112 } 113 114 static int 115 acpi_pcib_pci_attach(device_t dev) 116 { 117 struct acpi_pcib_softc *sc; 118 119 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 120 121 pcib_attach_common(dev); 122 sc = device_get_softc(dev); 123 sc->ap_handle = acpi_get_handle(dev); 124 acpi_pcib_fetch_prt(dev, &sc->ap_prt); 125 126 return (pcib_attach_child(dev)); 127 } 128 129 static int 130 acpi_pcib_pci_detach(device_t dev) 131 { 132 struct acpi_pcib_softc *sc; 133 int error; 134 135 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 136 137 sc = device_get_softc(dev); 138 error = pcib_detach(dev); 139 if (error == 0) 140 AcpiOsFree(sc->ap_prt.Pointer); 141 return (error); 142 } 143 144 static int 145 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 146 { 147 struct acpi_pcib_softc *sc = device_get_softc(dev); 148 149 switch (which) { 150 case ACPI_IVAR_HANDLE: 151 *result = (uintptr_t)sc->ap_handle; 152 return (0); 153 } 154 return (pcib_read_ivar(dev, child, which, result)); 155 } 156 157 static int 158 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin) 159 { 160 struct acpi_pcib_softc *sc; 161 162 sc = device_get_softc(pcib); 163 164 /* 165 * If we don't have a _PRT, fall back to the swizzle method 166 * for routing interrupts. 167 */ 168 if (sc->ap_prt.Pointer == NULL) 169 return (pcib_route_interrupt(pcib, dev, pin)); 170 else 171 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 172 } 173