OsdTable.c

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    1 /*-
    2  * Copyright (c) 2002 Mitsaru Iwasaki
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 /*
   28  * ACPI Table interfaces
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD: releng/10.4/sys/dev/acpica/Osd/OsdTable.c 281075 2015-04-04 10:17:51Z dim $");
   33 
   34 #include <sys/param.h>
   35 #include <sys/endian.h>
   36 #include <sys/kernel.h>
   37 #include <sys/linker.h>
   38 
   39 #include <contrib/dev/acpica/include/acpi.h>
   40 #include <contrib/dev/acpica/include/actables.h>
   41 
   42 #undef _COMPONENT
   43 #define _COMPONENT      ACPI_TABLES
   44 
   45 static char acpi_osname[128];
   46 TUNABLE_STR("hw.acpi.osname", acpi_osname, sizeof(acpi_osname));
   47 
   48 ACPI_STATUS
   49 AcpiOsPredefinedOverride(const ACPI_PREDEFINED_NAMES *InitVal,
   50     ACPI_STRING *NewVal)
   51 {
   52 
   53         if (InitVal == NULL || NewVal == NULL)
   54                 return (AE_BAD_PARAMETER);
   55 
   56         *NewVal = NULL;
   57         if (ACPI_COMPARE_NAME(InitVal->Name, "_OS_") &&
   58             InitVal->Type == ACPI_TYPE_STRING && strlen(acpi_osname) > 0) {
   59                 printf("ACPI: Overriding _OS definition with \"%s\"\n",
   60                     acpi_osname);
   61                 *NewVal = acpi_osname;
   62         }
   63         return (AE_OK);
   64 }
   65 
   66 ACPI_STATUS
   67 AcpiOsTableOverride(ACPI_TABLE_HEADER *ExistingTable,
   68     ACPI_TABLE_HEADER **NewTable)
   69 {
   70         char modname[] = "acpi_dsdt";
   71         caddr_t acpi_table;
   72         ACPI_TABLE_HEADER *hdr;
   73         size_t sz;
   74 
   75         if (ExistingTable == NULL || NewTable == NULL)
   76                 return (AE_BAD_PARAMETER);
   77 
   78         *NewTable = NULL;
   79         if (!ACPI_COMPARE_NAME(ExistingTable->Signature, ACPI_SIG_DSDT))
   80 #ifdef notyet
   81                 for (int i = 0; i < ACPI_NAME_SIZE; i++)
   82                         modname[i + 5] = tolower(ExistingTable->Signature[i]);
   83 #else
   84                 return (AE_SUPPORT);
   85 #endif
   86         acpi_table = preload_search_by_type(modname);
   87         if (acpi_table == NULL)
   88                 return (AE_NOT_FOUND);
   89         hdr = preload_fetch_addr(acpi_table);
   90         sz = preload_fetch_size(acpi_table);
   91         if (hdr == NULL || sz == 0)
   92                 return (AE_ERROR);
   93 #ifndef notyet
   94         /* Assume SSDT is installed with DSDT. */
   95         AcpiGbl_DisableSsdtTableInstall = TRUE;
   96 #endif
   97         *NewTable = hdr;
   98         return (AE_OK);
   99 }
  100 
  101 ACPI_STATUS
  102 AcpiOsPhysicalTableOverride(ACPI_TABLE_HEADER *ExistingTable,
  103     ACPI_PHYSICAL_ADDRESS *NewAddress, UINT32 *NewTableLength)
  104 {
  105 
  106         return (AE_SUPPORT);
  107 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/acpica/Osd/OsdTable.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/acpica/Osd/OsdTable.c