| Current Path : /usr/src/sys/contrib/dev/acpica/debugger/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/sys/contrib/dev/acpica/debugger/dbfileio.c |
/*******************************************************************************
*
* Module Name: dbfileio - Debugger file I/O commands. These can't usually
* be used when running the debugger in Ring 0 (Kernel mode)
*
******************************************************************************/
/*
* Copyright (C) 2000 - 2011, Intel Corp.
* 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,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* substantially similar to the "NO WARRANTY" disclaimer below
* ("Disclaimer") and any redistribution must be conditioned upon
* including a substantially similar Disclaimer requirement for further
* binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
*/
#include <contrib/dev/acpica/include/acpi.h>
#include <contrib/dev/acpica/include/accommon.h>
#include <contrib/dev/acpica/include/acdebug.h>
#ifdef ACPI_APPLICATION
#include <contrib/dev/acpica/include/actables.h>
#endif
#if (defined ACPI_DEBUGGER || defined ACPI_DISASSEMBLER)
#define _COMPONENT ACPI_CA_DEBUGGER
ACPI_MODULE_NAME ("dbfileio")
/*
* NOTE: this is here for lack of a better place. It is used in all
* flavors of the debugger, need LCD file
*/
#ifdef ACPI_APPLICATION
#include <stdio.h>
FILE *AcpiGbl_DebugFile = NULL;
#endif
#ifdef ACPI_DEBUGGER
/* Local prototypes */
#ifdef ACPI_APPLICATION
static ACPI_STATUS
AcpiDbCheckTextModeCorruption (
UINT8 *Table,
UINT32 TableLength,
UINT32 FileLength);
#endif
/*******************************************************************************
*
* FUNCTION: AcpiDbCloseDebugFile
*
* PARAMETERS: None
*
* RETURN: None
*
* DESCRIPTION: If open, close the current debug output file
*
******************************************************************************/
void
AcpiDbCloseDebugFile (
void)
{
#ifdef ACPI_APPLICATION
if (AcpiGbl_DebugFile)
{
fclose (AcpiGbl_DebugFile);
AcpiGbl_DebugFile = NULL;
AcpiGbl_DbOutputToFile = FALSE;
AcpiOsPrintf ("Debug output file %s closed\n", AcpiGbl_DbDebugFilename);
}
#endif
}
/*******************************************************************************
*
* FUNCTION: AcpiDbOpenDebugFile
*
* PARAMETERS: Name - Filename to open
*
* RETURN: None
*
* DESCRIPTION: Open a file where debug output will be directed.
*
******************************************************************************/
void
AcpiDbOpenDebugFile (
char *Name)
{
#ifdef ACPI_APPLICATION
AcpiDbCloseDebugFile ();
AcpiGbl_DebugFile = fopen (Name, "w+");
if (AcpiGbl_DebugFile)
{
AcpiOsPrintf ("Debug output file %s opened\n", Name);
ACPI_STRCPY (AcpiGbl_DbDebugFilename, Name);
AcpiGbl_DbOutputToFile = TRUE;
}
else
{
AcpiOsPrintf ("Could not open debug file %s\n", Name);
}
#endif
}
#endif
#ifdef ACPI_APPLICATION
/*******************************************************************************
*
* FUNCTION: AcpiDbCheckTextModeCorruption
*
* PARAMETERS: Table - Table buffer
* TableLength - Length of table from the table header
* FileLength - Length of the file that contains the table
*
* RETURN: Status
*
* DESCRIPTION: Check table for text mode file corruption where all linefeed
* characters (LF) have been replaced by carriage return linefeed
* pairs (CR/LF).
*
******************************************************************************/
static ACPI_STATUS
AcpiDbCheckTextModeCorruption (
UINT8 *Table,
UINT32 TableLength,
UINT32 FileLength)
{
UINT32 i;
UINT32 Pairs = 0;
if (TableLength != FileLength)
{
ACPI_WARNING ((AE_INFO,
"File length (0x%X) is not the same as the table length (0x%X)",
FileLength, TableLength));
}
/* Scan entire table to determine if each LF has been prefixed with a CR */
for (i = 1; i < FileLength; i++)
{
if (Table[i] == 0x0A)
{
if (Table[i - 1] != 0x0D)
{
/* The LF does not have a preceding CR, table not corrupted */
return (AE_OK);
}
else
{
/* Found a CR/LF pair */
Pairs++;
}
i++;
}
}
if (!Pairs)
{
return (AE_OK);
}
/*
* Entire table scanned, each CR is part of a CR/LF pair --
* meaning that the table was treated as a text file somewhere.
*
* NOTE: We can't "fix" the table, because any existing CR/LF pairs in the
* original table are left untouched by the text conversion process --
* meaning that we cannot simply replace CR/LF pairs with LFs.
*/
AcpiOsPrintf ("Table has been corrupted by text mode conversion\n");
AcpiOsPrintf ("All LFs (%u) were changed to CR/LF pairs\n", Pairs);
AcpiOsPrintf ("Table cannot be repaired!\n");
return (AE_BAD_VALUE);
}
/*******************************************************************************
*
* FUNCTION: AcpiDbReadTable
*
* PARAMETERS: fp - File that contains table
* Table - Return value, buffer with table
* TableLength - Return value, length of table
*
* RETURN: Status
*
* DESCRIPTION: Load the DSDT from the file pointer
*
******************************************************************************/
static ACPI_STATUS
AcpiDbReadTable (
FILE *fp,
ACPI_TABLE_HEADER **Table,
UINT32 *TableLength)
{
ACPI_TABLE_HEADER TableHeader;
UINT32 Actual;
ACPI_STATUS Status;
UINT32 FileSize;
BOOLEAN StandardHeader = TRUE;
/* Get the file size */
fseek (fp, 0, SEEK_END);
FileSize = (UINT32) ftell (fp);
fseek (fp, 0, SEEK_SET);
if (FileSize < 4)
{
return (AE_BAD_HEADER);
}
/* Read the signature */
if (fread (&TableHeader, 1, 4, fp) != 4)
{
AcpiOsPrintf ("Could not read the table signature\n");
return (AE_BAD_HEADER);
}
fseek (fp, 0, SEEK_SET);
/* The RSDT and FACS tables do not have standard ACPI headers */
if (ACPI_COMPARE_NAME (TableHeader.Signature, "RSD ") ||
ACPI_COMPARE_NAME (TableHeader.Signature, "FACS"))
{
*TableLength = FileSize;
StandardHeader = FALSE;
}
else
{
/* Read the table header */
if (fread (&TableHeader, 1, sizeof (TableHeader), fp) !=
sizeof (ACPI_TABLE_HEADER))
{
AcpiOsPrintf ("Could not read the table header\n");
return (AE_BAD_HEADER);
}
#if 0
/* Validate the table header/length */
Status = AcpiTbValidateTableHeader (&TableHeader);
if (ACPI_FAILURE (Status))
{
AcpiOsPrintf ("Table header is invalid!\n");
return (Status);
}
#endif
/* File size must be at least as long as the Header-specified length */
if (TableHeader.Length > FileSize)
{
AcpiOsPrintf (
"TableHeader length [0x%X] greater than the input file size [0x%X]\n",
TableHeader.Length, FileSize);
return (AE_BAD_HEADER);
}
#ifdef ACPI_OBSOLETE_CODE
/* We only support a limited number of table types */
if (ACPI_STRNCMP ((char *) TableHeader.Signature, DSDT_SIG, 4) &&
ACPI_STRNCMP ((char *) TableHeader.Signature, PSDT_SIG, 4) &&
ACPI_STRNCMP ((char *) TableHeader.Signature, SSDT_SIG, 4))
{
AcpiOsPrintf ("Table signature [%4.4s] is invalid or not supported\n",
(char *) TableHeader.Signature);
ACPI_DUMP_BUFFER (&TableHeader, sizeof (ACPI_TABLE_HEADER));
return (AE_ERROR);
}
#endif
*TableLength = TableHeader.Length;
}
/* Allocate a buffer for the table */
*Table = AcpiOsAllocate ((size_t) FileSize);
if (!*Table)
{
AcpiOsPrintf (
"Could not allocate memory for ACPI table %4.4s (size=0x%X)\n",
TableHeader.Signature, *TableLength);
return (AE_NO_MEMORY);
}
/* Get the rest of the table */
fseek (fp, 0, SEEK_SET);
Actual = fread (*Table, 1, (size_t) FileSize, fp);
if (Actual == FileSize)
{
if (StandardHeader)
{
/* Now validate the checksum */
Status = AcpiTbVerifyChecksum ((void *) *Table,
ACPI_CAST_PTR (ACPI_TABLE_HEADER, *Table)->Length);
if (Status == AE_BAD_CHECKSUM)
{
Status = AcpiDbCheckTextModeCorruption ((UINT8 *) *Table,
FileSize, (*Table)->Length);
return (Status);
}
}
return (AE_OK);
}
if (Actual > 0)
{
AcpiOsPrintf ("Warning - reading table, asked for %X got %X\n",
FileSize, Actual);
return (AE_OK);
}
AcpiOsPrintf ("Error - could not read the table file\n");
AcpiOsFree (*Table);
*Table = NULL;
*TableLength = 0;
return (AE_ERROR);
}
/*******************************************************************************
*
* FUNCTION: AeLocalLoadTable
*
* PARAMETERS: Table - pointer to a buffer containing the entire
* table to be loaded
*
* RETURN: Status
*
* DESCRIPTION: This function is called to load a table from the caller's
* buffer. The buffer must contain an entire ACPI Table including
* a valid header. The header fields will be verified, and if it
* is determined that the table is invalid, the call will fail.
*
******************************************************************************/
static ACPI_STATUS
AeLocalLoadTable (
ACPI_TABLE_HEADER *Table)
{
ACPI_STATUS Status = AE_OK;
/* ACPI_TABLE_DESC TableInfo; */
ACPI_FUNCTION_TRACE (AeLocalLoadTable);
#if 0
if (!Table)
{
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
TableInfo.Pointer = Table;
Status = AcpiTbRecognizeTable (&TableInfo, ACPI_TABLE_ALL);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Install the new table into the local data structures */
Status = AcpiTbInstallTable (&TableInfo);
if (ACPI_FAILURE (Status))
{
if (Status == AE_ALREADY_EXISTS)
{
/* Table already exists, no error */
Status = AE_OK;
}
/* Free table allocated by AcpiTbGetTable */
AcpiTbDeleteSingleTable (&TableInfo);
return_ACPI_STATUS (Status);
}
#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
Status = AcpiNsLoadTable (TableInfo.InstalledDesc, AcpiGbl_RootNode);
if (ACPI_FAILURE (Status))
{
/* Uninstall table and free the buffer */
AcpiTbDeleteTablesByType (ACPI_TABLE_ID_DSDT);
return_ACPI_STATUS (Status);
}
#endif
#endif
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiDbReadTableFromFile
*
* PARAMETERS: Filename - File where table is located
* Table - Where a pointer to the table is returned
*
* RETURN: Status
*
* DESCRIPTION: Get an ACPI table from a file
*
******************************************************************************/
ACPI_STATUS
AcpiDbReadTableFromFile (
char *Filename,
ACPI_TABLE_HEADER **Table)
{
FILE *fp;
UINT32 TableLength;
ACPI_STATUS Status;
/* Open the file */
fp = fopen (Filename, "rb");
if (!fp)
{
AcpiOsPrintf ("Could not open input file %s\n", Filename);
return (AE_ERROR);
}
/* Get the entire file */
fprintf (stderr, "Loading Acpi table from file %s\n", Filename);
Status = AcpiDbReadTable (fp, Table, &TableLength);
fclose(fp);
if (ACPI_FAILURE (Status))
{
AcpiOsPrintf ("Could not get table from the file\n");
return (Status);
}
return (AE_OK);
}
#endif
/*******************************************************************************
*
* FUNCTION: AcpiDbGetTableFromFile
*
* PARAMETERS: Filename - File where table is located
* ReturnTable - Where a pointer to the table is returned
*
* RETURN: Status
*
* DESCRIPTION: Load an ACPI table from a file
*
******************************************************************************/
ACPI_STATUS
AcpiDbGetTableFromFile (
char *Filename,
ACPI_TABLE_HEADER **ReturnTable)
{
#ifdef ACPI_APPLICATION
ACPI_STATUS Status;
ACPI_TABLE_HEADER *Table;
BOOLEAN IsAmlTable = TRUE;
Status = AcpiDbReadTableFromFile (Filename, &Table);
if (ACPI_FAILURE (Status))
{
return (Status);
}
#ifdef ACPI_DATA_TABLE_DISASSEMBLY
IsAmlTable = AcpiUtIsAmlTable (Table);
#endif
if (IsAmlTable)
{
/* Attempt to recognize and install the table */
Status = AeLocalLoadTable (Table);
if (ACPI_FAILURE (Status))
{
if (Status == AE_ALREADY_EXISTS)
{
AcpiOsPrintf ("Table %4.4s is already installed\n",
Table->Signature);
}
else
{
AcpiOsPrintf ("Could not install table, %s\n",
AcpiFormatException (Status));
}
return (Status);
}
fprintf (stderr,
"Acpi table [%4.4s] successfully installed and loaded\n",
Table->Signature);
}
AcpiGbl_AcpiHardwarePresent = FALSE;
if (ReturnTable)
{
*ReturnTable = Table;
}
#endif /* ACPI_APPLICATION */
return (AE_OK);
}
#endif /* ACPI_DEBUGGER */