FreeBSD/Linux Kernel Cross Reference
sys/ia64/acpica/OsdEnvironment.c

     /*-
      * Copyright (c) 2000,2001 Michael Smith
      * Copyright (c) 2000 BSDi
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/6.0/sys/ia64/acpica/OsdEnvironment.c 135453 2004-09-19 03:50:46Z marcel $");
    
    #include <sys/types.h>
    #include <sys/linker_set.h>
    #include <sys/sysctl.h>
    #include <machine/efi.h>
    
    #include "acpi.h"
    
    static struct uuid acpi_root_uuid = EFI_TABLE_ACPI20;
    
    static u_long acpi_root_phys;
    
    SYSCTL_ULONG(_machdep, OID_AUTO, acpi_root, CTLFLAG_RD, &acpi_root_phys, 0,
        "The physical address of the RSDP");
    
    ACPI_STATUS
    AcpiOsInitialize(void)
    {
    
            return(AE_OK);
    }
    
    ACPI_STATUS
    AcpiOsTerminate(void)
    {
    
            return(AE_OK);
    }
    
    ACPI_STATUS
    AcpiOsGetRootPointer(UINT32 Flags, ACPI_POINTER *RsdpAddress)
    {
            void *acpi_root;
    
            if (acpi_root_phys == 0) {
                    acpi_root = efi_get_table(&acpi_root_uuid);
                    if (acpi_root == NULL)
                            return (AE_NOT_FOUND);
                    acpi_root_phys = IA64_RR_MASK((u_long)acpi_root);
            }
    
            RsdpAddress->PointerType = ACPI_PHYSICAL_POINTER;
            RsdpAddress->Pointer.Physical = acpi_root_phys;
            return (AE_OK);
    }

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