| /****************************************************************************** |
| * |
| * Module Name: osunixxf - UNIX OSL interfaces |
| * |
| *****************************************************************************/ |
| |
| /* |
| * Copyright (C) 2000 - 2016, 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. |
| */ |
| #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") |
| |
| |
| BOOLEAN AcpiGbl_DebugTimeout = FALSE; |
| |
| |
| /* Upcalls to AcpiExec */ |
| |
| void |
| AeTableOverride ( |
| ACPI_TABLE_HEADER *ExistingTable, |
| ACPI_TABLE_HEADER **NewTable); |
| |
| typedef void* (*PTHREAD_CALLBACK) (void *); |
| |
| /* Buffer used by AcpiOsVprintf */ |
| |
| #define ACPI_VPRINTF_BUFFER_SIZE 512 |
| #define _ASCII_NEWLINE '\n' |
| |
| /* Terminal support for AcpiExec only */ |
| |
| #ifdef ACPI_EXEC_APP |
| #include <termios.h> |
| |
| struct termios OriginalTermAttributes; |
| int TermAttributesWereSet = 0; |
| |
| ACPI_STATUS |
| AcpiUtReadLine ( |
| char *Buffer, |
| UINT32 BufferLength, |
| UINT32 *BytesRead); |
| |
| static void |
| OsEnterLineEditMode ( |
| void); |
| |
| static void |
| OsExitLineEditMode ( |
| void); |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: OsEnterLineEditMode, OsExitLineEditMode |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Enter/Exit the raw character input mode for the terminal. |
| * |
| * Interactive line-editing support for the AML debugger. Used with the |
| * common/acgetline module. |
| * |
| * readline() is not used because of non-portability. It is not available |
| * on all systems, and if it is, often the package must be manually installed. |
| * |
| * Therefore, we use the POSIX tcgetattr/tcsetattr and do the minimal line |
| * editing that we need in AcpiOsGetLine. |
| * |
| * If the POSIX tcgetattr/tcsetattr interfaces are unavailable, these |
| * calls will also work: |
| * For OsEnterLineEditMode: system ("stty cbreak -echo") |
| * For OsExitLineEditMode: system ("stty cooked echo") |
| * |
| *****************************************************************************/ |
| |
| static void |
| OsEnterLineEditMode ( |
| void) |
| { |
| struct termios LocalTermAttributes; |
| |
| |
| TermAttributesWereSet = 0; |
| |
| /* STDIN must be a terminal */ |
| |
| if (!isatty (STDIN_FILENO)) |
| { |
| return; |
| } |
| |
| /* Get and keep the original attributes */ |
| |
| if (tcgetattr (STDIN_FILENO, &OriginalTermAttributes)) |
| { |
| fprintf (stderr, "Could not get terminal attributes!\n"); |
| return; |
| } |
| |
| /* Set the new attributes to enable raw character input */ |
| |
| memcpy (&LocalTermAttributes, &OriginalTermAttributes, |
| sizeof (struct termios)); |
| |
| LocalTermAttributes.c_lflag &= ~(ICANON | ECHO); |
| LocalTermAttributes.c_cc[VMIN] = 1; |
| LocalTermAttributes.c_cc[VTIME] = 0; |
| |
| if (tcsetattr (STDIN_FILENO, TCSANOW, &LocalTermAttributes)) |
| { |
| fprintf (stderr, "Could not set terminal attributes!\n"); |
| return; |
| } |
| |
| TermAttributesWereSet = 1; |
| } |
| |
| |
| static void |
| OsExitLineEditMode ( |
| void) |
| { |
| |
| if (!TermAttributesWereSet) |
| { |
| return; |
| } |
| |
| /* Set terminal attributes back to the original values */ |
| |
| if (tcsetattr (STDIN_FILENO, TCSANOW, &OriginalTermAttributes)) |
| { |
| fprintf (stderr, "Could not restore terminal attributes!\n"); |
| } |
| } |
| |
| |
| #else |
| |
| /* These functions are not needed for other ACPICA utilities */ |
| |
| #define OsEnterLineEditMode() |
| #define OsExitLineEditMode() |
| #endif |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsInitialize, AcpiOsTerminate |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Initialize and terminate this module. |
| * |
| *****************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiOsInitialize ( |
| void) |
| { |
| ACPI_STATUS Status; |
| |
| |
| AcpiGbl_OutputFile = stdout; |
| |
| OsEnterLineEditMode (); |
| |
| Status = AcpiOsCreateLock (&AcpiGbl_PrintLock); |
| if (ACPI_FAILURE (Status)) |
| { |
| return (Status); |
| } |
| |
| return (AE_OK); |
| } |
| |
| ACPI_STATUS |
| AcpiOsTerminate ( |
| void) |
| { |
| |
| OsExitLineEditMode (); |
| return (AE_OK); |
| } |
| |
| |
| #ifndef ACPI_USE_NATIVE_RSDP_POINTER |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsGetRootPointer |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: RSDP physical address |
| * |
| * DESCRIPTION: Gets the ACPI root pointer (RSDP) |
| * |
| *****************************************************************************/ |
| |
| ACPI_PHYSICAL_ADDRESS |
| AcpiOsGetRootPointer ( |
| void) |
| { |
| |
| return (0); |
| } |
| #endif |
| |
| |
| /****************************************************************************** |
| * |
| * 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. Note: very similar to AcpiOsVprintf |
| * (performance), changes should be tracked in both functions. |
| * |
| *****************************************************************************/ |
| |
| void ACPI_INTERNAL_VAR_XFACE |
| AcpiOsPrintf ( |
| 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 */ |
| |
| va_start (Args, Fmt); |
| vfprintf (AcpiGbl_DebugFile, Fmt, Args); |
| va_end (Args); |
| } |
| else |
| { |
| /* No redirection, send output to console (once only!) */ |
| |
| Flags |= ACPI_DB_CONSOLE_OUTPUT; |
| } |
| } |
| |
| if (Flags & ACPI_DB_CONSOLE_OUTPUT) |
| { |
| va_start (Args, Fmt); |
| vfprintf (AcpiGbl_OutputFile, Fmt, Args); |
| va_end (Args); |
| } |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsVprintf |
| * |
| * PARAMETERS: fmt - Standard printf format |
| * args - Argument list |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Formatted output with argument list pointer. Note: very |
| * similar to AcpiOsPrintf, changes should be tracked in both |
| * functions. |
| * |
| *****************************************************************************/ |
| |
| void |
| AcpiOsVprintf ( |
| const char *Fmt, |
| va_list Args) |
| { |
| UINT8 Flags; |
| char Buffer[ACPI_VPRINTF_BUFFER_SIZE]; |
| |
| |
| /* |
| * We build the output string in a local buffer because we may be |
| * outputting the buffer twice. Using vfprintf is problematic because |
| * some implementations modify the args pointer/structure during |
| * execution. Thus, we use the local buffer for portability. |
| * |
| * Note: Since this module is intended for use by the various ACPICA |
| * utilities/applications, we can safely declare the buffer on the stack. |
| * Also, This function is used for relatively small error messages only. |
| */ |
| vsnprintf (Buffer, ACPI_VPRINTF_BUFFER_SIZE, Fmt, Args); |
| |
| 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 */ |
| |
| fputs (Buffer, AcpiGbl_DebugFile); |
| } |
| else |
| { |
| /* No redirection, send output to console (once only!) */ |
| |
| Flags |= ACPI_DB_CONSOLE_OUTPUT; |
| } |
| } |
| |
| if (Flags & ACPI_DB_CONSOLE_OUTPUT) |
| { |
| fputs (Buffer, AcpiGbl_OutputFile); |
| } |
| } |
| |
| |
| #ifndef ACPI_EXEC_APP |
| /****************************************************************************** |
| * |
| * 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: Get the next input line from the terminal. NOTE: For the |
| * AcpiExec utility, we use the acgetline module instead to |
| * provide line-editing and history support. |
| * |
| *****************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiOsGetLine ( |
| char *Buffer, |
| UINT32 BufferLength, |
| UINT32 *BytesRead) |
| { |
| int InputChar; |
| UINT32 EndOfLine; |
| |
| |
| /* Standard AcpiOsGetLine for all utilities except AcpiExec */ |
| |
| for (EndOfLine = 0; ; EndOfLine++) |
| { |
| if (EndOfLine >= BufferLength) |
| { |
| return (AE_BUFFER_OVERFLOW); |
| } |
| |
| if ((InputChar = getchar ()) == EOF) |
| { |
| return (AE_ERROR); |
| } |
| |
| if (!InputChar || InputChar == _ASCII_NEWLINE) |
| { |
| break; |
| } |
| |
| Buffer[EndOfLine] = (char) InputChar; |
| } |
| |
| /* Null terminate the buffer */ |
| |
| Buffer[EndOfLine] = 0; |
| |
| /* Return the number of bytes in the string */ |
| |
| if (BytesRead) |
| { |
| *BytesRead = EndOfLine; |
| } |
| |
| return (AE_OK); |
| } |
| #endif |
| |
| |
| #ifndef ACPI_USE_NATIVE_MEMORY_MAPPING |
| /****************************************************************************** |
| * |
| * 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; |
| } |
| #endif |
| |
| |
| /****************************************************************************** |
| * |
| * 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); |
| } |
| |
| |
| #ifdef USE_NATIVE_ALLOCATE_ZEROED |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsAllocateZeroed |
| * |
| * PARAMETERS: Size - Amount to allocate, in bytes |
| * |
| * RETURN: Pointer to the new allocation. Null on error. |
| * |
| * DESCRIPTION: Allocate and zero memory. Algorithm is dependent on the OS. |
| * |
| *****************************************************************************/ |
| |
| void * |
| AcpiOsAllocateZeroed ( |
| ACPI_SIZE size) |
| { |
| void *Mem; |
| |
| |
| Mem = (void *) calloc (1, (size_t) size); |
| return (Mem); |
| } |
| #endif |
| |
| |
| /****************************************************************************** |
| * |
| * 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 |
| * MsecTimeout - How long to wait (milliseconds) |
| * |
| * RETURN: Status |
| * |
| * DESCRIPTION: Wait for units |
| * |
| *****************************************************************************/ |
| |
| ACPI_STATUS |
| AcpiOsWaitSemaphore ( |
| ACPI_HANDLE Handle, |
| UINT32 Units, |
| UINT16 MsecTimeout) |
| { |
| ACPI_STATUS Status = AE_OK; |
| sem_t *Sem = (sem_t *) Handle; |
| #ifndef ACPI_USE_ALTERNATE_TIMEOUT |
| struct timespec Time; |
| int RetVal; |
| #endif |
| |
| |
| if (!Sem) |
| { |
| return (AE_BAD_PARAMETER); |
| } |
| |
| switch (MsecTimeout) |
| { |
| /* |
| * 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 MsecTimeout */ |
| |
| default: |
| |
| #ifdef ACPI_USE_ALTERNATE_TIMEOUT |
| /* |
| * Alternate timeout mechanism for environments where |
| * sem_timedwait is not available or does not work properly. |
| */ |
| while (MsecTimeout) |
| { |
| if (sem_trywait (Sem) == 0) |
| { |
| /* Got the semaphore */ |
| return (AE_OK); |
| } |
| |
| if (MsecTimeout >= 10) |
| { |
| MsecTimeout -= 10; |
| usleep (10 * ACPI_USEC_PER_MSEC); /* ten milliseconds */ |
| } |
| else |
| { |
| MsecTimeout--; |
| usleep (ACPI_USEC_PER_MSEC); /* one millisecond */ |
| } |
| } |
| Status = (AE_TIME); |
| #else |
| /* |
| * The interface to sem_timedwait is an absolute time, so we need to |
| * get the current time, then add in the millisecond Timeout value. |
| */ |
| if (clock_gettime (CLOCK_REALTIME, &Time) == -1) |
| { |
| perror ("clock_gettime"); |
| return (AE_TIME); |
| } |
| |
| Time.tv_sec += (MsecTimeout / ACPI_MSEC_PER_SEC); |
| Time.tv_nsec += ((MsecTimeout % ACPI_MSEC_PER_SEC) * ACPI_NSEC_PER_MSEC); |
| |
| /* Handle nanosecond overflow (field must be less than one second) */ |
| |
| if (Time.tv_nsec >= ACPI_NSEC_PER_SEC) |
| { |
| Time.tv_sec += (Time.tv_nsec / ACPI_NSEC_PER_SEC); |
| Time.tv_nsec = (Time.tv_nsec % ACPI_NSEC_PER_SEC); |
| } |
| |
| while (((RetVal = sem_timedwait (Sem, &Time)) == -1) && (errno == EINTR)) |
| { |
| continue; |
| } |
| |
| if (RetVal != 0) |
| { |
| if (errno != ETIMEDOUT) |
| { |
| perror ("sem_timedwait"); |
| } |
| 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 for whole seconds */ |
| |
| sleep (milliseconds / ACPI_MSEC_PER_SEC); |
| |
| /* |
| * Sleep for remaining microseconds. |
| * Arg to usleep() is in usecs and must be less than 1,000,000 (1 second). |
| */ |
| usleep ((milliseconds % ACPI_MSEC_PER_SEC) * ACPI_USEC_PER_MSEC); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsGetTimer |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: Current time in 100 nanosecond units |
| * |
| * DESCRIPTION: Get the current system time |
| * |
| *****************************************************************************/ |
| |
| UINT64 |
| AcpiOsGetTimer ( |
| void) |
| { |
| struct timeval time; |
| |
| |
| /* This timer has sufficient resolution for user-space application code */ |
| |
| gettimeofday (&time, NULL); |
| |
| /* (Seconds * 10^7 = 100ns(10^-7)) + (Microseconds(10^-6) * 10^1 = 100ns) */ |
| |
| return (((UINT64) time.tv_sec * ACPI_100NSEC_PER_SEC) + |
| ((UINT64) time.tv_usec * ACPI_100NSEC_PER_USEC)); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsReadPciConfiguration |
| * |
| * PARAMETERS: PciId - Seg/Bus/Dev |
| * PciRegister - 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 PciRegister, |
| UINT64 *Value, |
| UINT32 Width) |
| { |
| |
| *Value = 0; |
| return (AE_OK); |
| } |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsWritePciConfiguration |
| * |
| * PARAMETERS: PciId - Seg/Bus/Dev |
| * PciRegister - 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 PciRegister, |
| 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 A 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); |
| } |
| |
| #else /* ACPI_SINGLE_THREADED */ |
| ACPI_THREAD_ID |
| AcpiOsGetThreadId ( |
| void) |
| { |
| return (1); |
| } |
| |
| ACPI_STATUS |
| AcpiOsExecute ( |
| ACPI_EXECUTE_TYPE Type, |
| ACPI_OSD_EXEC_CALLBACK Function, |
| void *Context) |
| { |
| |
| Function (Context); |
| |
| return (AE_OK); |
| } |
| |
| #endif /* ACPI_SINGLE_THREADED */ |
| |
| |
| /****************************************************************************** |
| * |
| * FUNCTION: AcpiOsWaitEventsComplete |
| * |
| * PARAMETERS: None |
| * |
| * RETURN: None |
| * |
| * DESCRIPTION: Wait for all asynchronous events to complete. This |
| * implementation does nothing. |
| * |
| *****************************************************************************/ |
| |
| void |
| AcpiOsWaitEventsComplete ( |
| void) |
| { |
| return; |
| } |
