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Number of tables calculation uses sizeof(void *)

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date	2000.07.10.20.26.00;	author rmoore1;	state Exp;
This commit is contained in:
aystarik 2005-06-29 18:59:02 +00:00
parent 1b3a51f99d
commit b3d720f4e1
1 changed files with 339 additions and 26 deletions
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365
source/components/tables/tbxfroot.c
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@ -1,7 +1,7 @@
/******************************************************************************
*
* Module Name: tbfac - ACPI FAC* (FACP, FACS) utilities
*
* Module Name: tbtable - ACPI tables: FACP, FACS, and RSDP utilities
*
*****************************************************************************/
@ -38,9 +38,9 @@
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
* 3. Conditions
*
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* 3.1. Redistribution of Source with Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification with rights to further distribute source must include
* the above Copyright Notice, the above License, this list of Conditions,
@ -48,11 +48,11 @@
* Licensee must cause all Covered Code to which Licensee contributes to
* contain a file documenting the changes Licensee made to create that Covered
* Code and the date of any change. Licensee must include in that file the
* documentation of any changes made by any predecessor Licensee. Licensee
* documentation of any changes made by any predecessor Licensee. Licensee
* must include a prominent statement that the modification is derived,
* directly or indirectly, from Original Intel Code.
*
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* 3.2. Redistribution of Source with no Rights to Further Distribute Source.
* Redistribution of source code of any substantial portion of the Covered
* Code or modification without rights to further distribute source must
* include the following Disclaimer and Export Compliance provision in the
@ -86,7 +86,7 @@
* INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
* UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
* IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
* PARTICULAR PURPOSE.
* PARTICULAR PURPOSE.
*
* 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
* OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
@ -114,21 +114,182 @@
*
*****************************************************************************/
#define __TBFAC_C__
#define __TBTABLE_C__
#include <acpi.h>
#include <hardware.h>
#include <tables.h>
#include "acpi.h"
#include "hardware.h"
#include "tables.h"
#define _COMPONENT TABLE_MANAGER
MODULE_NAME ("tbfac");
MODULE_NAME ("tbtable");
/******************************************************************************
/*******************************************************************************
*
* FUNCTION: TbGetTableFacs
* FUNCTION: AcpiTbGetTableRsdt
*
* PARAMETERS: NumberOfTables - Where the table count is placed
* TablePtr - Input buffer pointer, optional
*
* RETURN: Status
*
* DESCRIPTION: Load and validate the RSDP (ptr) and RSDT (table)
*
******************************************************************************/
ACPI_STATUS
AcpiTbGetTableRsdt (
UINT32 *NumberOfTables)
{
ACPI_STATUS Status = AE_OK;
ACPI_TABLE_DESC TableInfo;
FUNCTION_TRACE ("TbGetTableRsdt");
/* Get the RSDP */
Status = AcpiTbFindRsdp (&TableInfo);
if (ACPI_FAILURE (Status))
{
REPORT_WARNING ("RSDP structure not found");
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
}
/* Save the table pointers and allocation info */
Status = AcpiTbInitTableDescriptor (ACPI_TABLE_RSDP, &TableInfo);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
AcpiGbl_RSDP = (ROOT_SYSTEM_DESCRIPTOR_POINTER *) TableInfo.Pointer;
/*
* RSDP structure was found; Now get the RSDT
*/
DEBUG_PRINT (ACPI_INFO,
("RSDP located at %p, RSDT physical=%p \n",
AcpiGbl_RSDP, AcpiGbl_RSDP->RsdtPhysicalAddress));
Status = AcpiTbGetTable ((void *) AcpiGbl_RSDP->RsdtPhysicalAddress, NULL,
&TableInfo);
if (ACPI_FAILURE (Status))
{
DEBUG_PRINT (ACPI_ERROR,
("GetRsdt: Could not get the RSDT, %s\n",
AcpiCmFormatException (Status)));
if (Status == AE_BAD_SIGNATURE)
{
/* Invalid RSDT signature */
REPORT_ERROR ("Invalid signature where RSDP indicates RSDT should be located");
DUMP_BUFFER (AcpiGbl_RSDP, 20);
DEBUG_PRINT_RAW (ACPI_ERROR,
("RSDP points to RSDT at %lXh, but RSDT signature is invalid\n",
(void *) AcpiGbl_RSDP->RsdtPhysicalAddress));
}
}
/* Always delete the RSDP mapping */
AcpiTbDeleteAcpiTable (ACPI_TABLE_RSDP);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/* Save the table pointers and allocation info */
Status = AcpiTbInitTableDescriptor (ACPI_TABLE_RSDT, &TableInfo);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
AcpiGbl_RSDT = (ROOT_SYSTEM_DESCRIPTION_TABLE *) TableInfo.Pointer;
/* Valid RSDT signature, verify the checksum */
DEBUG_PRINT (ACPI_INFO, ("RSDT located at %p\n", AcpiGbl_RSDT));
Status = AcpiTbVerifyTableChecksum ((ACPI_TABLE_HEADER *) AcpiGbl_RSDT);
/*
* Determine the number of tables pointed to by the RSDT.
* This is defined by the ACPI Specification to be the number of
* pointers contained within the RSDT. The size of the pointers
* is architecture-dependent.
*/
*NumberOfTables = ((AcpiGbl_RSDT->header.Length -
sizeof (ACPI_TABLE_HEADER)) / sizeof (void *));
return_ACPI_STATUS (Status);
}
/*******************************************************************************
*
* FUNCTION: AcpiTbScanMemoryForRsdp
*
* PARAMETERS: StartAddress - Starting pointer for search
* Length - Maximum length to search
*
* RETURN: Pointer to the RSDP if found, otherwise NULL.
*
* DESCRIPTION: Search a block of memory for the RSDP signature
*
******************************************************************************/
char *
AcpiTbScanMemoryForRsdp (
char *StartAddress,
UINT32 Length)
{
UINT32 Offset;
char *MemRover;
/* Search from given start addr for the requested length */
for (Offset = 0, MemRover = StartAddress;
Offset < Length;
Offset += RSDP_SCAN_STEP, MemRover += RSDP_SCAN_STEP)
{
/* The signature and checksum must both be correct */
if (STRNCMP (MemRover, RSDP_SIG, sizeof (RSDP_SIG)-1) == 0 &&
AcpiTbChecksum (MemRover,
sizeof (ROOT_SYSTEM_DESCRIPTOR_POINTER)) == 0)
{
/* If so, we have found the RSDP */
return MemRover;
}
}
/* Searched entire block, no RSDP was found */
return NULL;
}
/*******************************************************************************
*
* FUNCTION: AcpiTbFindRsdp
*
* PARAMETERS: *BufferPtr - If == NULL, read data from buffer
* rather than searching memory
@ -136,7 +297,158 @@
*
* RETURN: Status
*
* DESCRIPTION: Returns a pointer to the FACS as defined in FACP. This
* DESCRIPTION: Search lower 1Mbyte of memory for the root system descriptor
* pointer structure. If it is found, set *RSDP to point to it.
*
* NOTE: The RSDP must be either in the first 1K of the Extended
* BIOS Data Area or between E0000 and FFFFF (ACPI 1.0 section
* 5.2.2; assertion #421).
*
******************************************************************************/
ACPI_STATUS
AcpiTbFindRsdp (
ACPI_TABLE_DESC *TableInfo)
{
char *TablePtr;
char *MemRover;
ACPI_STATUS Status = AE_OK;
FUNCTION_TRACE ("TbFindRsdp");
if (AcpiGbl_AcpiInitData.RSDP_PhysicalAddress)
{
/*
* RSDP address was supplied as part of the initialization data
*/
Status = AcpiOsMapMemory(AcpiGbl_AcpiInitData.RSDP_PhysicalAddress,
sizeof (ROOT_SYSTEM_DESCRIPTOR_POINTER),
(void **)&TablePtr);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (!TablePtr)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
/*
* The signature and checksum must both be correct
*/
if (STRNCMP (TablePtr, RSDP_SIG, sizeof (RSDP_SIG)-1) != 0)
{
/* Nope, BAD Signature */
return_ACPI_STATUS (AE_BAD_SIGNATURE);
}
/* The signature and checksum must both be correct */
if (AcpiTbChecksum (TablePtr,
sizeof (ROOT_SYSTEM_DESCRIPTOR_POINTER)) != 0)
{
/* Nope, BAD Checksum */
return_ACPI_STATUS (AE_BAD_CHECKSUM);
}
/* RSDP supplied is OK */
/* If so, we have found the RSDP */
TableInfo->Pointer = (ACPI_TABLE_HEADER *) TablePtr;
TableInfo->Length = sizeof (ROOT_SYSTEM_DESCRIPTOR_POINTER);
TableInfo->Allocation = ACPI_MEM_MAPPED;
TableInfo->BasePointer = TablePtr;
return_ACPI_STATUS (AE_OK);
}
/*
* Search memory for RSDP. First map low physical memory.
*/
Status = AcpiOsMapMemory (LO_RSDP_WINDOW_BASE, LO_RSDP_WINDOW_SIZE,
(void **)&TablePtr);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
/*
* 1) Search EBDA (low memory) paragraphs
*/
if (NULL != (MemRover = AcpiTbScanMemoryForRsdp (TablePtr,
LO_RSDP_WINDOW_SIZE)))
{
/* Found it, return pointer and don't delete the mapping */
TableInfo->Pointer = (ACPI_TABLE_HEADER *) MemRover;
TableInfo->Length = LO_RSDP_WINDOW_SIZE;
TableInfo->Allocation = ACPI_MEM_MAPPED;
TableInfo->BasePointer = TablePtr;
return_ACPI_STATUS (AE_OK);
}
/* This mapping is no longer needed */
AcpiOsUnmapMemory (TablePtr, LO_RSDP_WINDOW_SIZE);
/*
* 2) Search upper memory: 16-byte boundaries in E0000h-F0000h
*/
Status = AcpiOsMapMemory (HI_RSDP_WINDOW_BASE, HI_RSDP_WINDOW_SIZE,
(void **)&TablePtr);
if (ACPI_FAILURE (Status))
{
return_ACPI_STATUS (Status);
}
if (NULL != (MemRover = AcpiTbScanMemoryForRsdp (TablePtr,
HI_RSDP_WINDOW_SIZE)))
{
/* Found it, return pointer and don't delete the mapping */
TableInfo->Pointer = (ACPI_TABLE_HEADER *) MemRover;
TableInfo->Length = HI_RSDP_WINDOW_SIZE;
TableInfo->Allocation = ACPI_MEM_MAPPED;
TableInfo->BasePointer = TablePtr;
return_ACPI_STATUS (AE_OK);
}
/* This mapping is no longer needed */
AcpiOsUnmapMemory (TablePtr, HI_RSDP_WINDOW_SIZE);
/* RSDP signature was not found */
return_ACPI_STATUS (AE_NOT_FOUND);
}
/*******************************************************************************
*
* FUNCTION: AcpiTbGetTableFacs
*
* PARAMETERS: *BufferPtr - If == NULL, read data from buffer
* rather than searching memory
* *TableInfo - Where the table info is returned
*
* RETURN: Status
*
* DESCRIPTION: Returns a pointer to the FACS as defined in FACP. This
* function assumes the global variable FACP has been
* correctly initialized. The value of FACP->FirmwareCtrl
* into a far pointer which is returned.
@ -144,8 +456,8 @@
******************************************************************************/
ACPI_STATUS
TbGetTableFacs (
char *BufferPtr,
AcpiTbGetTableFacs (
char *BufferPtr,
ACPI_TABLE_DESC *TableInfo)
{
void *TablePtr = NULL;
@ -159,11 +471,11 @@ TbGetTableFacs (
/* Must have a valid FACP pointer */
if (!Gbl_FACP)
if (!AcpiGbl_FACP)
{
return_ACPI_STATUS (AE_NO_ACPI_TABLES);
}
Size = sizeof (FIRMWARE_ACPI_CONTROL_STRUCTURE);
if (BufferPtr)
{
@ -171,29 +483,30 @@ TbGetTableFacs (
* Getting table from a file -- allocate a buffer and
* read the table.
*/
TablePtr = CmAllocate (Size);
TablePtr = AcpiCmAllocate (Size);
if(!TablePtr)
{
return_ACPI_STATUS (AE_NO_MEMORY);
}
MEMCPY (TablePtr, BufferPtr, Size);
/* Save allocation type */
Allocation = ACPI_MEM_ALLOCATED;
}
else
{
/* Just map the physical memory to our address space */
Status = TbMapAcpiTable ((void *) Gbl_FACP->FirmwareCtrl, &Size, &TablePtr);
Status = AcpiTbMapAcpiTable ((void *) AcpiGbl_FACP->FirmwareCtrl,
&Size, &TablePtr);
if (ACPI_FAILURE(Status))
{
return_ACPI_STATUS (Status);
}
/* Save allocation type */
Allocation = ACPI_MEM_MAPPED;
@ -206,7 +519,7 @@ TbGetTableFacs (
TableInfo->Length = Size;
TableInfo->Allocation = Allocation;
TableInfo->BasePointer = TablePtr;
return_ACPI_STATUS (Status);
}