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/malloc.h> 36 #include <sys/kernel.h> 37 38 #include "acpi.h" 39 40 #include <dev/acpica/acpivar.h> 41 #include <dev/acpica/acpi_pcibvar.h> 42 43 #include <machine/pci_cfgreg.h> 44 #include <dev/pci/pcivar.h> 45 #include <dev/pci/pcireg.h> 46 #include <dev/pci/pcib_private.h> 47 48 #include "pcib_if.h" 49 50 /* 51 * Hooks for the ACPI CA debugging infrastructure 52 */ 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_resume(device_t bus); 70 static int acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result); 71 static int acpi_pcib_pci_route_interrupt(device_t pcib, 72 device_t dev, int pin); 73 74 static device_method_t acpi_pcib_pci_methods[] = { 75 /* Device interface */ 76 DEVMETHOD(device_probe, acpi_pcib_pci_probe), 77 DEVMETHOD(device_attach, acpi_pcib_pci_attach), 78 DEVMETHOD(device_shutdown, bus_generic_shutdown), 79 DEVMETHOD(device_suspend, bus_generic_suspend), 80 DEVMETHOD(device_resume, acpi_pcib_pci_resume), 81 82 /* Bus interface */ 83 DEVMETHOD(bus_print_child, bus_generic_print_child), 84 DEVMETHOD(bus_read_ivar, acpi_pcib_read_ivar), 85 DEVMETHOD(bus_write_ivar, pcib_write_ivar), 86 DEVMETHOD(bus_alloc_resource, pcib_alloc_resource), 87 DEVMETHOD(bus_release_resource, bus_generic_release_resource), 88 DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), 89 DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), 90 DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), 91 DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), 92 93 /* pcib interface */ 94 DEVMETHOD(pcib_maxslots, pcib_maxslots), 95 DEVMETHOD(pcib_read_config, pcib_read_config), 96 DEVMETHOD(pcib_write_config, pcib_write_config), 97 DEVMETHOD(pcib_route_interrupt, acpi_pcib_pci_route_interrupt), 98 99 {0, 0} 100 }; 101 102 static driver_t acpi_pcib_pci_driver = { 103 "pcib", 104 acpi_pcib_pci_methods, 105 sizeof(struct acpi_pcib_softc), 106 }; 107 108 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0); 109 110 static int 111 acpi_pcib_pci_probe(device_t dev) 112 { 113 114 if ((pci_get_class(dev) != PCIC_BRIDGE) || 115 (pci_get_subclass(dev) != PCIS_BRIDGE_PCI) || 116 acpi_disabled("pci")) 117 return (ENXIO); 118 if (acpi_get_handle(dev) == NULL) 119 return (ENXIO); 120 if (!pci_cfgregopen()) 121 return (ENXIO); 122 123 device_set_desc(dev, "ACPI PCI-PCI bridge"); 124 return (-1000); 125 } 126 127 static int 128 acpi_pcib_pci_attach(device_t dev) 129 { 130 struct acpi_pcib_softc *sc; 131 132 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 133 134 pcib_attach_common(dev); 135 sc = device_get_softc(dev); 136 sc->ap_handle = acpi_get_handle(dev); 137 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus)); 138 } 139 140 static int 141 acpi_pcib_pci_resume(device_t dev) 142 { 143 struct acpi_pcib_softc *sc = device_get_softc(dev); 144 145 return (acpi_pcib_resume(dev, &sc->ap_prt, sc->ap_pcibsc.secbus)); 146 } 147 148 static int 149 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 150 { 151 struct acpi_pcib_softc *sc = device_get_softc(dev); 152 153 switch (which) { 154 case ACPI_IVAR_HANDLE: 155 *result = (uintptr_t)sc->ap_handle; 156 return(0); 157 } 158 return(pcib_read_ivar(dev, child, which, result)); 159 } 160 161 static int 162 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin) 163 { 164 struct acpi_pcib_softc *sc; 165 166 sc = device_get_softc(pcib); 167 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 168 } 169