1 /* $NetBSD: mainbus.c,v 1.9 2011/05/17 17:34:50 dyoung Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Author: 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28 * POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: mainbus.c,v 1.9 2011/05/17 17:34:50 dyoung Exp $"); 33 34 #include "acpica.h" 35 36 #include <sys/param.h> 37 #include <sys/device.h> 38 #include <sys/errno.h> 39 40 #include <dev/acpi/acpica.h> 41 #include <dev/acpi/acpivar.h> 42 #include <actables.h> 43 44 45 static int mainbus_match(device_t, cfdata_t, void *); 46 static void mainbus_attach(device_t, device_t, void *); 47 48 CFATTACH_DECL_NEW(mainbus, 0, mainbus_match, mainbus_attach, NULL, NULL); 49 50 51 /* 52 * Probe for the mainbus; always succeeds. 53 */ 54 static int 55 mainbus_match(device_t parent, cfdata_t match, void *aux) 56 { 57 58 return 1; 59 } 60 61 /* 62 * Attach the mainbus. 63 */ 64 static void 65 mainbus_attach(device_t parent, device_t self, void *aux) 66 { 67 #if NACPICA > 0 68 struct acpibus_attach_args aaa; 69 #endif 70 ACPI_PHYSICAL_ADDRESS rsdp_ptr; 71 ACPI_MADT_LOCAL_SAPIC *entry; 72 ACPI_TABLE_MADT *table; 73 ACPI_TABLE_RSDP *rsdp; 74 ACPI_TABLE_XSDT *xsdt; 75 char *end, *p; 76 int tables, i; 77 78 aprint_naive("\n"); 79 aprint_normal("\n"); 80 81 if ((rsdp_ptr = AcpiOsGetRootPointer()) == 0) 82 panic("cpu not found"); 83 84 rsdp = (ACPI_TABLE_RSDP *)IA64_PHYS_TO_RR7(rsdp_ptr); 85 xsdt = (ACPI_TABLE_XSDT *)IA64_PHYS_TO_RR7(rsdp->XsdtPhysicalAddress); 86 87 tables = (UINT64 *)((char *)xsdt + xsdt->Header.Length) - 88 xsdt->TableOffsetEntry; 89 90 for (i = 0; i < tables; i++) { 91 int len; 92 char *sig; 93 94 table = (ACPI_TABLE_MADT *) 95 IA64_PHYS_TO_RR7(xsdt->TableOffsetEntry[i]); 96 97 sig = table->Header.Signature; 98 if (strncmp(sig, ACPI_SIG_MADT, ACPI_NAME_SIZE) != 0) 99 continue; 100 len = table->Header.Length; 101 if (ACPI_FAILURE(AcpiTbChecksum((void *)table, len))) 102 continue; 103 104 end = (char *)table + table->Header.Length; 105 p = (char *)(table + 1); 106 while (p < end) { 107 entry = (ACPI_MADT_LOCAL_SAPIC *)p; 108 109 if (entry->Header.Type == ACPI_MADT_TYPE_LOCAL_SAPIC) 110 config_found_ia(self, "cpubus", entry, 0); 111 112 p += entry->Header.Length; 113 } 114 } 115 116 #if NACPICA > 0 117 acpi_probe(); 118 119 aaa.aa_iot = IA64_BUS_SPACE_IO; 120 aaa.aa_memt = IA64_BUS_SPACE_MEM; 121 aaa.aa_pc = 0; 122 aaa.aa_pciflags = 123 PCI_FLAGS_IO_OKAY | PCI_FLAGS_MEM_OKAY | 124 PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | 125 PCI_FLAGS_MWI_OKAY; 126 aaa.aa_ic = 0; 127 config_found_ia(self, "acpibus", &aaa, 0); 128 #endif 129 130 return; 131 } 132