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 39 #include <contrib/dev/acpica/include/acpi.h> 40 #include <contrib/dev/acpica/include/accommon.h> 41 42 #include <dev/acpica/acpivar.h> 43 #include <dev/acpica/acpi_pcibvar.h> 44 45 #include <machine/pci_cfgreg.h> 46 #include <dev/pci/pcivar.h> 47 #include <dev/pci/pcireg.h> 48 #include <dev/pci/pcib_private.h> 49 #include "pcib_if.h" 50 51 /* Hooks for the ACPI CA debugging infrastructure. */ 52 #define _COMPONENT ACPI_BUS 53 ACPI_MODULE_NAME("PCI_PCI") 54 55 struct acpi_pcib_softc { 56 struct pcib_softc ap_pcibsc; 57 ACPI_HANDLE ap_handle; 58 ACPI_BUFFER ap_prt; /* interrupt routing table */ 59 }; 60 61 struct acpi_pcib_lookup_info { 62 UINT32 address; 63 ACPI_HANDLE handle; 64 }; 65 66 static int acpi_pcib_pci_probe(device_t bus); 67 static int acpi_pcib_pci_attach(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 78 /* Bus interface */ 79 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar), 80 81 /* pcib interface */ 82 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt), 83 84 {0, 0} 85 }; 86 87 static devclass_t pcib_devclass; 88 89 DEFINE_CLASS_1(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods, 90 sizeof(struct acpi_pcib_softc), pcib_driver); 91 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0); 92 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1); 93 94 static int 95 acpi_pcib_pci_probe(device_t dev) 96 { 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 if (acpi_get_handle(dev) == NULL) 103 return (ENXIO); 104 if (pci_cfgregopen() == 0) 105 return (ENXIO); 106 107 device_set_desc(dev, "ACPI PCI-PCI bridge"); 108 return (-1000); 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_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 126 { 127 struct acpi_pcib_softc *sc = device_get_softc(dev); 128 129 switch (which) { 130 case ACPI_IVAR_HANDLE: 131 *result = (uintptr_t)sc->ap_handle; 132 return (0); 133 } 134 return (pcib_read_ivar(dev, child, which, result)); 135 } 136 137 static int 138 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin) 139 { 140 struct acpi_pcib_softc *sc; 141 142 sc = device_get_softc(pcib); 143 144 /* 145 * If we don't have a _PRT, fall back to the swizzle method 146 * for routing interrupts. 147 */ 148 if (sc->ap_prt.Pointer == NULL) 149 return (pcib_route_interrupt(pcib, dev, pin)); 150 else 151 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 152 } 153