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