/****************************************************************************** * * Module Name: osunixxf - UNIX OSL interfaces * *****************************************************************************/ /****************************************************************************** * * 1. Copyright Notice * * Some or all of this work - Copyright (c) 1999 - 2018, 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. * ***************************************************************************** * * Alternatively, you may choose to be licensed under the terms of the * following license: * * 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. * * 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 MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * 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 DAMAGE. * * Alternatively, you may choose to be licensed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * *****************************************************************************/ /* * 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 #include #include #include #include #include #include #include #define _COMPONENT ACPI_OS_SERVICES ACPI_MODULE_NAME ("osunixxf") /* 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 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: AcpiOsEnterSleep * * PARAMETERS: SleepState - Which sleep state to enter * RegaValue - Register A value * RegbValue - Register B value * * RETURN: Status * * DESCRIPTION: A hook before writing sleep registers to enter the sleep * state. Return AE_CTRL_TERMINATE to skip further sleep register * writes. * *****************************************************************************/ ACPI_STATUS AcpiOsEnterSleep ( UINT8 SleepState, UINT32 RegaValue, UINT32 RegbValue) { return (AE_OK); } /****************************************************************************** * * 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__ { static int SemaphoreCount = 0; char SemaphoreName[32]; snprintf (SemaphoreName, sizeof (SemaphoreName), "acpi_sem_%d", SemaphoreCount++); printf ("%s\n", SemaphoreName); 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); } #ifdef __APPLE__ if (sem_close (Sem) == -1) { return (AE_BAD_PARAMETER); } #else if (sem_destroy (Sem) == -1) { return (AE_BAD_PARAMETER); } #endif 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; int RetVal; #ifndef ACPI_USE_ALTERNATE_TIMEOUT struct timespec Time; #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: while (((RetVal = sem_wait (Sem)) == -1) && (errno == EINTR)) { continue; /* Restart if interrupted */ } if (RetVal != 0) { 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; /* Restart if interrupted */ } 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; }