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/acpi.h> 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 #include "pcib_if.h" 48 49 /* Hooks for the ACPI CA debugging infrastructure. */ 50 #define _COMPONENT ACPI_BUS 51 ACPI_MODULE_NAME("PCI_PCI") 52 53 struct acpi_pcib_softc { 54 struct pcib_softc ap_pcibsc; 55 ACPI_HANDLE ap_handle; 56 ACPI_BUFFER ap_prt; /* interrupt routing table */ 57 }; 58 59 struct acpi_pcib_lookup_info { 60 UINT32 address; 61 ACPI_HANDLE handle; 62 }; 63 64 static int acpi_pcib_pci_probe(device_t bus); 65 static int acpi_pcib_pci_attach(device_t bus); 66 static int acpi_pcib_pci_resume(device_t bus); 67 static int acpi_pcib_read_ivar(device_t dev, device_t child, 68 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 DEVMETHOD(pcib_alloc_msi, pcib_alloc_msi), 97 DEVMETHOD(pcib_release_msi, pcib_release_msi), 98 DEVMETHOD(pcib_alloc_msix, pcib_alloc_msix), 99 DEVMETHOD(pcib_release_msix, pcib_release_msix), 100 DEVMETHOD(pcib_map_msi, pcib_map_msi), 101 102 {0, 0} 103 }; 104 105 static devclass_t pcib_devclass; 106 107 DEFINE_CLASS_0(pcib, acpi_pcib_pci_driver, acpi_pcib_pci_methods, 108 sizeof(struct acpi_pcib_softc)); 109 DRIVER_MODULE(acpi_pcib, pci, acpi_pcib_pci_driver, pcib_devclass, 0, 0); 110 MODULE_DEPEND(acpi_pcib, acpi, 1, 1, 1); 111 112 static int 113 acpi_pcib_pci_probe(device_t dev) 114 { 115 116 if (pci_get_class(dev) != PCIC_BRIDGE || 117 pci_get_subclass(dev) != PCIS_BRIDGE_PCI || 118 acpi_disabled("pci")) 119 return (ENXIO); 120 if (acpi_get_handle(dev) == NULL) 121 return (ENXIO); 122 if (pci_cfgregopen() == 0) 123 return (ENXIO); 124 125 device_set_desc(dev, "ACPI PCI-PCI bridge"); 126 return (-1000); 127 } 128 129 static int 130 acpi_pcib_pci_attach(device_t dev) 131 { 132 struct acpi_pcib_softc *sc; 133 134 ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); 135 136 pcib_attach_common(dev); 137 sc = device_get_softc(dev); 138 sc->ap_handle = acpi_get_handle(dev); 139 return (acpi_pcib_attach(dev, &sc->ap_prt, sc->ap_pcibsc.secbus)); 140 } 141 142 static int 143 acpi_pcib_pci_resume(device_t dev) 144 { 145 146 return (acpi_pcib_resume(dev)); 147 } 148 149 static int 150 acpi_pcib_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 151 { 152 struct acpi_pcib_softc *sc = device_get_softc(dev); 153 154 switch (which) { 155 case ACPI_IVAR_HANDLE: 156 *result = (uintptr_t)sc->ap_handle; 157 return (0); 158 } 159 return (pcib_read_ivar(dev, child, which, result)); 160 } 161 162 static int 163 acpi_pcib_pci_route_interrupt(device_t pcib, device_t dev, int pin) 164 { 165 struct acpi_pcib_softc *sc; 166 167 sc = device_get_softc(pcib); 168 169 /* 170 * If we don't have a _PRT, fall back to the swizzle method 171 * for routing interrupts. 172 */ 173 if (sc->ap_prt.Pointer == NULL) 174 return (pcib_route_interrupt(pcib, dev, pin)); 175 else 176 return (acpi_pcib_route_interrupt(pcib, dev, pin, &sc->ap_prt)); 177 } 178