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 * $FreeBSD$ 28 */ 29 #include "opt_acpi.h" 30 31 #include <sys/param.h> 32 #include <sys/bus.h> 33 #include <sys/malloc.h> 34 #include <sys/kernel.h> 35 36 #include "acpi.h" 37 38 #include <dev/acpica/acpivar.h> 39 #include <dev/acpica/acpi_pcibvar.h> 40 41 #include <machine/pci_cfgreg.h> 42 #include <pci/pcivar.h> 43 #include <pci/pcireg.h> 44 #include <pci/pcib_private.h> 45 46 #include "pcib_if.h" 47 48 /* 49 * Hooks for the ACPI CA debugging infrastructure 50 */ 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_resume(device_t bus); 68 static int acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result); 69 static int acpi_pcib_pci_route_interrupt(device_t pcib, 70 device_t dev, int pin); 71 72 static device_method_t acpi_pcib_pci_methods[] = { 73 /* Device interface */ 74 DEVMETHOD(device_probe, acpi_pcib_pci_probe), 75 DEVMETHOD(device_attach, acpi_pcib_pci_attach), 76 DEVMETHOD(device_shutdown, bus_generic_shutdown), 77 DEVMETHOD(device_suspend, bus_generic_suspend), 78 DEVMETHOD(device_resume, acpi_pcib_pci_resume), 79 80 /* Bus interface */ 81 DEVMETHOD(bus_print_child, bus_generic_print_child), 82 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar), 83 DEVMETHOD(bus_write_ivar, pcib_write_ivar), 84 DEVMETHOD(bus_alloc_resource, pcib_alloc_resource), 85 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 86 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 87 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 88 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 89 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 90 91 /* pcib interface */ 92 DEVMETHOD(pcib_maxslots, pcib_maxslots), 93 DEVMETHOD(pcib_read_config, pcib_read_config), 94 DEVMETHOD(pcib_write_config, pcib_write_config), 95 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt), 96 97 {0, 0} 98 }; 99 100 static driver_t acpi_pcib_pci_driver = { 101 "pcib", 102 acpi_pcib_pci_methods, 103 sizeof(struct acpi_pcib_softc), 104 }; 105 106 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0); 107 108 static int 109 acpi_pcib_pci_probe(device_t dev) 110 { 111 112 if ((pci_get_class(dev) != PCIC_BRIDGE) || 113 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI) || 114 acpi_disabled("pci")) 115 return (ENXIO); 116 if (acpi_get_handle(dev) == NULL) 117 return (ENXIO); 118 if (!pci_cfgregopen()) 119 return (ENXIO); 120 121 device_set_desc(dev, "ACPI PCI-PCI bridge"); 122 return (-1000); 123 } 124 125 static int 126 acpi_pcib_pci_attach(device_t dev) 127 { 128 struct acpi_pcib_softc *sc; 129 130 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 131 132 pcib_attach_common(dev); 133 sc = device_get_softc(dev); 134 sc->ap_handle = acpi_get_handle(dev); 135 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus)); 136 } 137 138 static int 139 acpi_pcib_pci_resume(device_t dev) 140 { 141 struct acpi_pcib_softc *sc = device_get_softc(dev); 142 143 return (acpi_pcib_resume(dev, &sc->ap_prt, sc->ap_pcibsc.secbus)); 144 } 145 146 static int 147 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 148 { 149 struct acpi_pcib_softc *sc = device_get_softc(dev); 150 151 switch (which) { 152 case ACPI_IVAR_HANDLE: 153 *result = (uintptr_t)sc->ap_handle; 154 return(0); 155 } 156 return(pcib_read_ivar(dev, child, which, result)); 157 } 158 159 static int 160 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin) 161 { 162 struct acpi_pcib_softc *sc; 163 164 sc = device_get_softc(pcib); 165 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 166 } 167