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kolibrios/drivers/devman/acpica/os_specific/service_layers/osunixxf.c
Sergey Semyonov (Serge) 0f1313efde acpica library 
git-svn-id: svn://kolibrios.org@1498 a494cfbc-eb01-0410-851d-a64ba20cac60
2010-06-18 14:39:07 +00:00

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/******************************************************************************
*
* Module Name: osunixxf - UNIX OSL interfaces
*
*****************************************************************************/
/******************************************************************************
*
* 1. Copyright Notice
*
* Some or all of this work - Copyright (c) 1999 - 2010, Intel Corp.
* All rights reserved.
*
* 2. License
*
* 2.1. This is your license from Intel Corp. under its intellectual property
* rights. You may have additional license terms from the party that provided
* you this software, covering your right to use that party's intellectual
* property rights.
*
* 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
* copy of the source code appearing in this file ("Covered Code") an
* irrevocable, perpetual, worldwide license under Intel's copyrights in the
* base code distributed originally by Intel ("Original Intel Code") to copy,
* make derivatives, distribute, use and display any portion of the Covered
* Code in any form, with the right to sublicense such rights; and
*
* 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
* license (with the right to sublicense), under only those claims of Intel
* patents that are infringed by the Original Intel Code, to make, use, sell,
* offer to sell, and import the Covered Code and derivative works thereof
* solely to the minimum extent necessary to exercise the above copyright
* license, and in no event shall the patent license extend to any additions
* to or modifications of the Original Intel Code. No other license or right
* is granted directly or by implication, estoppel or otherwise;
*
* The above copyright and patent license is granted only if the following
* conditions are met:
*
* 3. Conditions
*
* 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,
* and the following Disclaimer and Export Compliance provision. In addition,
* 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
* 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.
* 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
* documentation and/or other materials provided with distribution. In
* addition, Licensee may not authorize further sublicense of source of any
* portion of the Covered Code, and must include terms to the effect that the
* license from Licensee to its licensee is limited to the intellectual
* property embodied in the software Licensee provides to its licensee, and
* not to intellectual property embodied in modifications its licensee may
* make.
*
* 3.3. Redistribution of Executable. Redistribution in executable form of any
* substantial portion of the Covered Code or modification must reproduce the
* above Copyright Notice, and the following Disclaimer and Export Compliance
* provision in the documentation and/or other materials provided with the
* distribution.
*
* 3.4. Intel retains all right, title, and interest in and to the Original
* Intel Code.
*
* 3.5. Neither the name Intel nor any other trademark owned or controlled by
* Intel shall be used in advertising or otherwise to promote the sale, use or
* other dealings in products derived from or relating to the Covered Code
* without prior written authorization from Intel.
*
* 4. Disclaimer and Export Compliance
*
* 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
* HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
* IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
* 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.
*
* 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
* COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
* SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
* CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
* HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
* SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
* LIMITED REMEDY.
*
* 4.3. Licensee shall not export, either directly or indirectly, any of this
* software or system incorporating such software without first obtaining any
* required license or other approval from the U. S. Department of Commerce or
* any other agency or department of the United States Government. In the
* event Licensee exports any such software from the United States or
* re-exports any such software from a foreign destination, Licensee shall
* ensure that the distribution and export/re-export of the software is in
* compliance with all laws, regulations, orders, or other restrictions of the
* U.S. Export Administration Regulations. Licensee agrees that neither it nor
* any of its subsidiaries will export/re-export any technical data, process,
* software, or service, directly or indirectly, to any country for which the
* United States government or any agency thereof requires an export license,
* other governmental approval, or letter of assurance, without first obtaining
* such license, approval or letter.
*
*****************************************************************************/
/*
* These interfaces are required in order to compile the ASL compiler under
* Linux or other Unix-like system.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <sys/time.h>
#include <semaphore.h>
#include <pthread.h>
#include "acpi.h"
#include "accommon.h"
#include "amlcode.h"
#include "acparser.h"
#include "acdebug.h"
#define _COMPONENT ACPI_OS_SERVICES
ACPI_MODULE_NAME ("osunixxf")
extern FILE *AcpiGbl_DebugFile;
FILE *AcpiGbl_OutputFile;
/* Upcalls to AcpiExec */
ACPI_PHYSICAL_ADDRESS
AeLocalGetRootPointer (
void);
void
AeTableOverride (
ACPI_TABLE_HEADER *ExistingTable,
ACPI_TABLE_HEADER **NewTable);
typedef void* (*PTHREAD_CALLBACK) (void *);
/******************************************************************************
*
* FUNCTION: AcpiOsInitialize, AcpiOsTerminate
*
* PARAMETERS: None
*
* RETURN: Status
*
* DESCRIPTION: Init and terminate. Nothing to do.
*
*****************************************************************************/
ACPI_STATUS
AcpiOsInitialize (void)
{
AcpiGbl_OutputFile = stdout;
return (AE_OK);
}
ACPI_STATUS
AcpiOsTerminate (void)
{
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsGetRootPointer
*
* PARAMETERS: None
*
* RETURN: RSDP physical address
*
* DESCRIPTION: Gets the root pointer (RSDP)
*
*****************************************************************************/
ACPI_PHYSICAL_ADDRESS
AcpiOsGetRootPointer (
void)
{
return (AeLocalGetRootPointer ());
}
/******************************************************************************
*
* FUNCTION: AcpiOsPredefinedOverride
*
* PARAMETERS: InitVal - Initial value of the predefined object
* NewVal - The new value for the object
*
* RETURN: Status, pointer to value. Null pointer returned if not
* overriding.
*
* DESCRIPTION: Allow the OS to override predefined names
*
*****************************************************************************/
ACPI_STATUS
AcpiOsPredefinedOverride (
const ACPI_PREDEFINED_NAMES *InitVal,
ACPI_STRING *NewVal)
{
if (!InitVal || !NewVal)
{
return (AE_BAD_PARAMETER);
}
*NewVal = NULL;
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsTableOverride
*
* PARAMETERS: ExistingTable - Header of current table (probably firmware)
* NewTable - Where an entire new table is returned.
*
* RETURN: Status, pointer to new table. Null pointer returned if no
* table is available to override
*
* DESCRIPTION: Return a different version of a table if one is available
*
*****************************************************************************/
ACPI_STATUS
AcpiOsTableOverride (
ACPI_TABLE_HEADER *ExistingTable,
ACPI_TABLE_HEADER **NewTable)
{
if (!ExistingTable || !NewTable)
{
return (AE_BAD_PARAMETER);
}
*NewTable = NULL;
#ifdef ACPI_EXEC_APP
AeTableOverride (ExistingTable, NewTable);
return (AE_OK);
#else
return (AE_NO_ACPI_TABLES);
#endif
}
/******************************************************************************
*
* FUNCTION: AcpiOsRedirectOutput
*
* PARAMETERS: Destination - An open file handle/pointer
*
* RETURN: None
*
* DESCRIPTION: Causes redirect of AcpiOsPrintf and AcpiOsVprintf
*
*****************************************************************************/
void
AcpiOsRedirectOutput (
void *Destination)
{
AcpiGbl_OutputFile = Destination;
}
/******************************************************************************
*
* FUNCTION: AcpiOsPrintf
*
* PARAMETERS: fmt, ... Standard printf format
*
* RETURN: None
*
* DESCRIPTION: Formatted output
*
*****************************************************************************/
void ACPI_INTERNAL_VAR_XFACE
AcpiOsPrintf (
const char *Fmt,
...)
{
va_list Args;
va_start (Args, Fmt);
AcpiOsVprintf (Fmt, Args);
va_end (Args);
}
/******************************************************************************
*
* FUNCTION: AcpiOsVprintf
*
* PARAMETERS: fmt Standard printf format
* args Argument list
*
* RETURN: None
*
* DESCRIPTION: Formatted output with argument list pointer
*
*****************************************************************************/
void
AcpiOsVprintf (
const char *Fmt,
va_list Args)
{
INT32 Count = 0;
UINT8 Flags;
Flags = AcpiGbl_DbOutputFlags;
if (Flags & ACPI_DB_REDIRECTABLE_OUTPUT)
{
/* Output is directable to either a file (if open) or the console */
if (AcpiGbl_DebugFile)
{
/* Output file is open, send the output there */
Count = vfprintf (AcpiGbl_DebugFile, Fmt, Args);
}
else
{
/* No redirection, send output to console (once only!) */
Flags |= ACPI_DB_CONSOLE_OUTPUT;
}
}
if (Flags & ACPI_DB_CONSOLE_OUTPUT)
{
Count = vfprintf (AcpiGbl_OutputFile, Fmt, Args);
}
}
/******************************************************************************
*
* FUNCTION: AcpiOsGetLine
*
* PARAMETERS: fmt Standard printf format
* args Argument list
*
* RETURN: Actual bytes read
*
* DESCRIPTION: Formatted input with argument list pointer
*
*****************************************************************************/
UINT32
AcpiOsGetLine (
char *Buffer)
{
UINT8 Temp;
UINT32 i;
for (i = 0; ; i++)
{
scanf ("%1c", &Temp);
if (!Temp || Temp == '\n')
{
break;
}
Buffer [i] = Temp;
}
/* Null terminate the buffer */
Buffer [i] = 0;
/* Return the number of bytes in the string */
return (i);
}
/******************************************************************************
*
* FUNCTION: AcpiOsMapMemory
*
* PARAMETERS: where Physical address of memory to be mapped
* length How much memory to map
*
* RETURN: Pointer to mapped memory. Null on error.
*
* DESCRIPTION: Map physical memory into caller's address space
*
*****************************************************************************/
void *
AcpiOsMapMemory (
ACPI_PHYSICAL_ADDRESS where,
ACPI_SIZE length)
{
return (ACPI_TO_POINTER ((ACPI_SIZE) where));
}
/******************************************************************************
*
* FUNCTION: AcpiOsUnmapMemory
*
* PARAMETERS: where Logical address of memory to be unmapped
* length How much memory to unmap
*
* RETURN: None.
*
* DESCRIPTION: Delete a previously created mapping. Where and Length must
* correspond to a previous mapping exactly.
*
*****************************************************************************/
void
AcpiOsUnmapMemory (
void *where,
ACPI_SIZE length)
{
return;
}
/******************************************************************************
*
* FUNCTION: AcpiOsAllocate
*
* PARAMETERS: Size Amount to allocate, in bytes
*
* RETURN: Pointer to the new allocation. Null on error.
*
* DESCRIPTION: Allocate memory. Algorithm is dependent on the OS.
*
*****************************************************************************/
void *
AcpiOsAllocate (
ACPI_SIZE size)
{
void *Mem;
Mem = (void *) malloc ((size_t) size);
return (Mem);
}
/******************************************************************************
*
* FUNCTION: AcpiOsFree
*
* PARAMETERS: mem Pointer to previously allocated memory
*
* RETURN: None.
*
* DESCRIPTION: Free memory allocated via AcpiOsAllocate
*
*****************************************************************************/
void
AcpiOsFree (
void *mem)
{
free (mem);
}
/******************************************************************************
*
* FUNCTION: AcpiOsCreateSemaphore
*
* PARAMETERS: InitialUnits - Units to be assigned to the new semaphore
* OutHandle - Where a handle will be returned
*
* RETURN: Status
*
* DESCRIPTION: Create an OS semaphore
*
*****************************************************************************/
ACPI_STATUS
AcpiOsCreateSemaphore (
UINT32 MaxUnits,
UINT32 InitialUnits,
ACPI_HANDLE *OutHandle)
{
sem_t *Sem;
if (!OutHandle)
{
return (AE_BAD_PARAMETER);
}
Sem = AcpiOsAllocate (sizeof (sem_t));
if (!Sem)
{
return (AE_NO_MEMORY);
}
if (sem_init (Sem, 0, InitialUnits) == -1)
{
AcpiOsFree (Sem);
return (AE_BAD_PARAMETER);
}
*OutHandle = (ACPI_HANDLE) Sem;
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsDeleteSemaphore
*
* PARAMETERS: Handle - Handle returned by AcpiOsCreateSemaphore
*
* RETURN: Status
*
* DESCRIPTION: Delete an OS semaphore
*
*****************************************************************************/
ACPI_STATUS
AcpiOsDeleteSemaphore (
ACPI_HANDLE Handle)
{
sem_t *Sem = (sem_t *) Handle;
if (!Sem)
{
return (AE_BAD_PARAMETER);
}
if (sem_destroy (Sem) == -1)
{
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsWaitSemaphore
*
* PARAMETERS: Handle - Handle returned by AcpiOsCreateSemaphore
* Units - How many units to wait for
* Timeout - How long to wait
*
* RETURN: Status
*
* DESCRIPTION: Wait for units
*
*****************************************************************************/
ACPI_STATUS
AcpiOsWaitSemaphore (
ACPI_HANDLE Handle,
UINT32 Units,
UINT16 Timeout)
{
ACPI_STATUS Status = AE_OK;
sem_t *Sem = (sem_t *) Handle;
struct timespec T;
if (!Sem)
{
return (AE_BAD_PARAMETER);
}
switch (Timeout)
{
/*
* No Wait:
* --------
* A zero timeout value indicates that we shouldn't wait - just
* acquire the semaphore if available otherwise return AE_TIME
* (a.k.a. 'would block').
*/
case 0:
if (sem_trywait(Sem) == -1)
{
Status = (AE_TIME);
}
break;
/* Wait Indefinitely */
case ACPI_WAIT_FOREVER:
if (sem_wait (Sem))
{
Status = (AE_TIME);
}
break;
/* Wait with Timeout */
default:
T.tv_sec = Timeout / 1000;
T.tv_nsec = (Timeout - (T.tv_sec * 1000)) * 1000000;
#ifdef ACPI_USE_ALTERNATE_TIMEOUT
/*
* Alternate timeout mechanism for environments where
* sem_timedwait is not available or does not work properly.
*/
while (Timeout)
{
if (sem_trywait (Sem) == 0)
{
/* Got the semaphore */
return (AE_OK);
}
usleep (1000); /* one millisecond */
Timeout--;
}
Status = (AE_TIME);
#else
if (sem_timedwait (Sem, &T))
{
Status = (AE_TIME);
}
#endif
break;
}
return (Status);
}
/******************************************************************************
*
* FUNCTION: AcpiOsSignalSemaphore
*
* PARAMETERS: Handle - Handle returned by AcpiOsCreateSemaphore
* Units - Number of units to send
*
* RETURN: Status
*
* DESCRIPTION: Send units
*
*****************************************************************************/
ACPI_STATUS
AcpiOsSignalSemaphore (
ACPI_HANDLE Handle,
UINT32 Units)
{
sem_t *Sem = (sem_t *)Handle;
if (!Sem)
{
return (AE_BAD_PARAMETER);
}
if (sem_post (Sem) == -1)
{
return (AE_LIMIT);
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: Spinlock interfaces
*
* DESCRIPTION: Map these interfaces to semaphore interfaces
*
*****************************************************************************/
ACPI_STATUS
AcpiOsCreateLock (
ACPI_SPINLOCK *OutHandle)
{
return (AcpiOsCreateSemaphore (1, 1, OutHandle));
}
void
AcpiOsDeleteLock (
ACPI_SPINLOCK Handle)
{
AcpiOsDeleteSemaphore (Handle);
}
ACPI_CPU_FLAGS
AcpiOsAcquireLock (
ACPI_HANDLE Handle)
{
AcpiOsWaitSemaphore (Handle, 1, 0xFFFF);
return (0);
}
void
AcpiOsReleaseLock (
ACPI_SPINLOCK Handle,
ACPI_CPU_FLAGS Flags)
{
AcpiOsSignalSemaphore (Handle, 1);
}
/******************************************************************************
*
* FUNCTION: AcpiOsInstallInterruptHandler
*
* PARAMETERS: InterruptNumber Level handler should respond to.
* Isr Address of the ACPI interrupt handler
* ExceptPtr Where status is returned
*
* RETURN: Handle to the newly installed handler.
*
* DESCRIPTION: Install an interrupt handler. Used to install the ACPI
* OS-independent handler.
*
*****************************************************************************/
UINT32
AcpiOsInstallInterruptHandler (
UINT32 InterruptNumber,
ACPI_OSD_HANDLER ServiceRoutine,
void *Context)
{
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsRemoveInterruptHandler
*
* PARAMETERS: Handle Returned when handler was installed
*
* RETURN: Status
*
* DESCRIPTION: Uninstalls an interrupt handler.
*
*****************************************************************************/
ACPI_STATUS
AcpiOsRemoveInterruptHandler (
UINT32 InterruptNumber,
ACPI_OSD_HANDLER ServiceRoutine)
{
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsExecute
*
* PARAMETERS: Type - Type of execution
* Function - Address of the function to execute
* Context - Passed as a parameter to the function
*
* RETURN: Status.
*
* DESCRIPTION: Execute a new thread
*
*****************************************************************************/
ACPI_STATUS
AcpiOsExecute (
ACPI_EXECUTE_TYPE Type,
ACPI_OSD_EXEC_CALLBACK Function,
void *Context)
{
pthread_t thread;
int ret;
ret = pthread_create (&thread, NULL, (PTHREAD_CALLBACK) Function, Context);
if (ret)
{
AcpiOsPrintf("Create thread failed");
}
return (0);
}
/******************************************************************************
*
* FUNCTION: AcpiOsStall
*
* PARAMETERS: microseconds To sleep
*
* RETURN: Blocks until sleep is completed.
*
* DESCRIPTION: Sleep at microsecond granularity
*
*****************************************************************************/
void
AcpiOsStall (
UINT32 microseconds)
{
if (microseconds)
{
usleep (microseconds);
}
}
/******************************************************************************
*
* FUNCTION: AcpiOsSleep
*
* PARAMETERS: milliseconds To sleep
*
* RETURN: Blocks until sleep is completed.
*
* DESCRIPTION: Sleep at millisecond granularity
*
*****************************************************************************/
void
AcpiOsSleep (
UINT64 milliseconds)
{
sleep (milliseconds / 1000); /* Sleep for whole seconds */
/*
* Arg to usleep() must be less than 1,000,000 (1 second)
*/
usleep ((milliseconds % 1000) * 1000); /* Sleep for remaining usecs */
}
/******************************************************************************
*
* FUNCTION: AcpiOsGetTimer
*
* PARAMETERS: None
*
* RETURN: Current time in 100 nanosecond units
*
* DESCRIPTION: Get the current system time
*
*****************************************************************************/
UINT64
AcpiOsGetTimer (void)
{
struct timeval time;
gettimeofday (&time, NULL);
/* Seconds * 10^7 = 100ns(10^-7), Microseconds(10^-6) * 10^1 = 100ns */
return (((UINT64) time.tv_sec * 10000000) + ((UINT64) time.tv_usec * 10));
}
/******************************************************************************
*
* FUNCTION: AcpiOsValidateInterface
*
* PARAMETERS: Interface - Requested interface to be validated
*
* RETURN: AE_OK if interface is supported, AE_SUPPORT otherwise
*
* DESCRIPTION: Match an interface string to the interfaces supported by the
* host. Strings originate from an AML call to the _OSI method.
*
*****************************************************************************/
ACPI_STATUS
AcpiOsValidateInterface (
char *Interface)
{
return (AE_SUPPORT);
}
/******************************************************************************
*
* FUNCTION: AcpiOsReadPciConfiguration
*
* PARAMETERS: PciId Seg/Bus/Dev
* Register Device Register
* Value Buffer where value is placed
* Width Number of bits
*
* RETURN: Status
*
* DESCRIPTION: Read data from PCI configuration space
*
*****************************************************************************/
ACPI_STATUS
AcpiOsReadPciConfiguration (
ACPI_PCI_ID *PciId,
UINT32 Register,
void *Value,
UINT32 Width)
{
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsWritePciConfiguration
*
* PARAMETERS: PciId Seg/Bus/Dev
* Register Device Register
* Value Value to be written
* Width Number of bits
*
* RETURN: Status.
*
* DESCRIPTION: Write data to PCI configuration space
*
*****************************************************************************/
ACPI_STATUS
AcpiOsWritePciConfiguration (
ACPI_PCI_ID *PciId,
UINT32 Register,
UINT64 Value,
UINT32 Width)
{
return (AE_OK);
}
/* TEMPORARY STUB FUNCTION */
void
AcpiOsDerivePciId(
ACPI_HANDLE Device,
ACPI_HANDLE Region,
ACPI_PCI_ID **PciId)
{
}
/******************************************************************************
*
* FUNCTION: AcpiOsReadPort
*
* PARAMETERS: Address Address of I/O port/register to read
* Value Where value is placed
* Width Number of bits
*
* RETURN: Value read from port
*
* DESCRIPTION: Read data from an I/O port or register
*
*****************************************************************************/
ACPI_STATUS
AcpiOsReadPort (
ACPI_IO_ADDRESS Address,
UINT32 *Value,
UINT32 Width)
{
switch (Width)
{
case 8:
*Value = 0xFF;
break;
case 16:
*Value = 0xFFFF;
break;
case 32:
*Value = 0xFFFFFFFF;
break;
default:
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsWritePort
*
* PARAMETERS: Address Address of I/O port/register to write
* Value Value to write
* Width Number of bits
*
* RETURN: None
*
* DESCRIPTION: Write data to an I/O port or register
*
*****************************************************************************/
ACPI_STATUS
AcpiOsWritePort (
ACPI_IO_ADDRESS Address,
UINT32 Value,
UINT32 Width)
{
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsReadMemory
*
* PARAMETERS: Address Physical Memory Address to read
* Value Where value is placed
* Width Number of bits
*
* RETURN: Value read from physical memory address
*
* DESCRIPTION: Read data from a physical memory address
*
*****************************************************************************/
ACPI_STATUS
AcpiOsReadMemory (
ACPI_PHYSICAL_ADDRESS Address,
UINT32 *Value,
UINT32 Width)
{
switch (Width)
{
case 8:
case 16:
case 32:
*Value = 0;
break;
default:
return (AE_BAD_PARAMETER);
}
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsWriteMemory
*
* PARAMETERS: Address Physical Memory Address to write
* Value Value to write
* Width Number of bits
*
* RETURN: None
*
* DESCRIPTION: Write data to a physical memory address
*
*****************************************************************************/
ACPI_STATUS
AcpiOsWriteMemory (
ACPI_PHYSICAL_ADDRESS Address,
UINT32 Value,
UINT32 Width)
{
return (AE_OK);
}
/******************************************************************************
*
* FUNCTION: AcpiOsReadable
*
* PARAMETERS: Pointer - Area to be verified
* Length - Size of area
*
* RETURN: TRUE if readable for entire length
*
* DESCRIPTION: Verify that a pointer is valid for reading
*
*****************************************************************************/
BOOLEAN
AcpiOsReadable (
void *Pointer,
ACPI_SIZE Length)
{
return (TRUE);
}
/******************************************************************************
*
* FUNCTION: AcpiOsWritable
*
* PARAMETERS: Pointer - Area to be verified
* Length - Size of area
*
* RETURN: TRUE if writable for entire length
*
* DESCRIPTION: Verify that a pointer is valid for writing
*
*****************************************************************************/
BOOLEAN
AcpiOsWritable (
void *Pointer,
ACPI_SIZE Length)
{
return (TRUE);
}
/******************************************************************************
*
* FUNCTION: AcpiOsGetThreadId
*
* PARAMETERS: None
*
* RETURN: Id of the running thread
*
* DESCRIPTION: Get the Id of the current (running) thread
*
* NOTE: The environment header should contain this line:
* #define ACPI_THREAD_ID pthread_t
*
*****************************************************************************/
ACPI_THREAD_ID
AcpiOsGetThreadId (void)
{
return (pthread_self ());
}
/******************************************************************************
*
* FUNCTION: AcpiOsSignal
*
* PARAMETERS: Function ACPI CA signal function code
* Info Pointer to function-dependent structure
*
* RETURN: Status
*
* DESCRIPTION: Miscellaneous functions. Example implementation only.
*
*****************************************************************************/
ACPI_STATUS
AcpiOsSignal (
UINT32 Function,
void *Info)
{
switch (Function)
{
case ACPI_SIGNAL_FATAL:
break;
case ACPI_SIGNAL_BREAKPOINT:
break;
default:
break;
}
return (AE_OK);
}
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