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freebsd-dev/source/os_specific/service_layers/osunixxf.c
Jung-uk Kim 5437485bdb Import ACPICA 20120215.
2012-02-16 00:24:10 +00:00

1244 lines
29 KiB
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/******************************************************************************
*
* Module Name: osunixxf - UNIX OSL interfaces
*
*****************************************************************************/
/*
* Copyright (C) 2000 - 2012, 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.
*/
/*
* These interfaces are required in order to compile the ASL compiler and the
* various ACPICA tools under Linux or other Unix-like system.
*
* Note: Use #define __APPLE__ for OS X generation.
*/
#include "acpi.h"
#include "accommon.h"
#include "amlcode.h"
#include "acparser.h"
#include "acdebug.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#include <sys/time.h>
#include <semaphore.h>
#include <pthread.h>
#include <errno.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 *);
/* Apple-specific */
#ifdef __APPLE__
#define sem_destroy sem_close
#endif
/******************************************************************************
*
* 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 ACPI 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: AcpiOsPhysicalTableOverride
*
* PARAMETERS: ExistingTable - Header of current table (probably firmware)
* NewAddress - Where new table address is returned
* (Physical address)
* NewTableLength - Where new table length is returned
*
* RETURN: Status, address/length of new table. Null pointer returned
* if no table is available to override.
*
* DESCRIPTION: Returns AE_SUPPORT, function not used in user space.
*
*****************************************************************************/
ACPI_STATUS
AcpiOsPhysicalTableOverride (
ACPI_TABLE_HEADER *ExistingTable,
ACPI_PHYSICAL_ADDRESS *NewAddress,
UINT32 *NewTableLength)
{
return (AE_SUPPORT);
}
/******************************************************************************
*
* 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)
{
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 */
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)
{
vfprintf (AcpiGbl_OutputFile, Fmt, Args);
}
}
/******************************************************************************
*
* FUNCTION: AcpiOsGetLine
*
* PARAMETERS: Buffer - Where to return the command line
* BufferLength - Maximum length of Buffer
* BytesRead - Where the actual byte count is returned
*
* RETURN: Status and actual bytes read
*
* DESCRIPTION: Formatted input with argument list pointer
*
*****************************************************************************/
ACPI_STATUS
AcpiOsGetLine (
char *Buffer,
UINT32 BufferLength,
UINT32 *BytesRead)
{
UINT8 Temp;
UINT32 i;
for (i = 0; ; i++)
{
if (i >= BufferLength)
{
return (AE_BUFFER_OVERFLOW);
}
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 */
if (BytesRead)
{
*BytesRead = i;
}
return (AE_OK);
}
/******************************************************************************
*
* 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);
}
#ifdef ACPI_SINGLE_THREADED
/******************************************************************************
*
* FUNCTION: Semaphore stub functions
*
* DESCRIPTION: Stub functions used for single-thread applications that do
* not require semaphore synchronization. Full implementations
* of these functions appear after the stubs.
*
*****************************************************************************/
ACPI_STATUS
AcpiOsCreateSemaphore (
UINT32 MaxUnits,
UINT32 InitialUnits,
ACPI_HANDLE *OutHandle)
{
*OutHandle = (ACPI_HANDLE) 1;
return (AE_OK);
}
ACPI_STATUS
AcpiOsDeleteSemaphore (
ACPI_HANDLE Handle)
{
return (AE_OK);
}
ACPI_STATUS
AcpiOsWaitSemaphore (
ACPI_HANDLE Handle,
UINT32 Units,
UINT16 Timeout)
{
return (AE_OK);
}
ACPI_STATUS
AcpiOsSignalSemaphore (
ACPI_HANDLE Handle,
UINT32 Units)
{
return (AE_OK);
}
#else
/******************************************************************************
*
* 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);
}
#ifdef __APPLE__
{
char *SemaphoreName = tmpnam (NULL);
Sem = sem_open (SemaphoreName, O_EXCL|O_CREAT, 0755, InitialUnits);
if (!Sem)
{
return (AE_NO_MEMORY);
}
sem_unlink (SemaphoreName); /* This just deletes the name */
}
#else
Sem = AcpiOsAllocate (sizeof (sem_t));
if (!Sem)
{
return (AE_NO_MEMORY);
}
if (sem_init (Sem, 0, InitialUnits) == -1)
{
AcpiOsFree (Sem);
return (AE_BAD_PARAMETER);
}
#endif
*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);
}
#endif /* ACPI_SINGLE_THREADED */
/******************************************************************************
*
* 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: AcpiOsStall
*
* PARAMETERS: microseconds - Time 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 - Time 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: 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,
UINT64 *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);
}
/******************************************************************************
*
* 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 (8,16,32, or 64)
*
* RETURN: Value read from physical memory address. Always returned
* as a 64-bit integer, regardless of the read width.
*
* DESCRIPTION: Read data from a physical memory address
*
*****************************************************************************/
ACPI_STATUS
AcpiOsReadMemory (
ACPI_PHYSICAL_ADDRESS Address,
UINT64 *Value,
UINT32 Width)
{
switch (Width)
{
case 8:
case 16:
case 32:
case 64:
*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 (8,16,32, or 64)
*
* RETURN: None
*
* DESCRIPTION: Write data to a physical memory address
*
*****************************************************************************/
ACPI_STATUS
AcpiOsWriteMemory (
ACPI_PHYSICAL_ADDRESS Address,
UINT64 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: 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);
}
/* Optional multi-thread support */
#ifndef ACPI_SINGLE_THREADED
/******************************************************************************
*
* FUNCTION: AcpiOsGetThreadId
*
* PARAMETERS: None
*
* RETURN: Id of the running thread
*
* DESCRIPTION: Get the ID of the current (running) thread
*
*****************************************************************************/
ACPI_THREAD_ID
AcpiOsGetThreadId (
void)
{
pthread_t thread;
thread = pthread_self();
return (ACPI_CAST_PTHREAD_T (thread));
}
/******************************************************************************
*
* 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);
}
#endif /* ACPI_SINGLE_THREADED */
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