/*
- * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2016 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#error IOLib.h is for kernel use only
#endif
+#include <stdarg.h>
#include <sys/cdefs.h>
#include <sys/appleapiopts.h>
@param size Size of the memory requested.
@result Pointer to the allocated memory, or zero on failure. */
-void * IOMalloc(vm_size_t size);
+void * IOMalloc(vm_size_t size) __attribute__((alloc_size(1)));
/*! @function IOFree
@abstract Frees memory allocated with IOMalloc.
@discussion This function frees memory allocated with IOMalloc, it may block and so should not be called from interrupt level or while a simple lock is held.
- @param address Pointer to the allocated memory.
- @param size Size of the memory allocated. */
+ @param address Pointer to the allocated memory. Must be identical to result
+ @of a prior IOMalloc.
+ @param size Size of the memory allocated. Must be identical to size of
+ @the corresponding IOMalloc */
void IOFree(void * address, vm_size_t size);
@param alignment Byte count of the alignment for the memory. For example, pass 256 to get memory allocated at an address with bit 0-7 zero.
@result Pointer to the allocated memory, or zero on failure. */
-void * IOMallocAligned(vm_size_t size, vm_offset_t alignment);
+void * IOMallocAligned(vm_size_t size, vm_offset_t alignment) __attribute__((alloc_size(1)));
/*! @function IOFreeAligned
@abstract Frees memory allocated with IOMallocAligned.
void IOFreeAligned(void * address, vm_size_t size);
/*! @function IOMallocContiguous
- @abstract Allocates wired memory in the kernel map, with an alignment restriction and physically contiguous.
+ @abstract Deprecated - use IOBufferMemoryDescriptor. Allocates wired memory in the kernel map, with an alignment restriction and physically contiguous.
@discussion This is a utility to allocate memory in the kernel, with an alignment restriction which is specified as a byte count, and will allocate only physically contiguous memory. The request may fail if memory is fragmented, and may cause large amounts of paging activity. This function may block and so should not be called from interrupt level or while a simple lock is held.
@param size Size of the memory requested.
@param alignment Byte count of the alignment for the memory. For example, pass 256 to get memory allocated at an address with bits 0-7 zero.
@result Virtual address of the allocated memory, or zero on failure. */
void * IOMallocContiguous(vm_size_t size, vm_size_t alignment,
- IOPhysicalAddress * physicalAddress);
+ IOPhysicalAddress * physicalAddress) __attribute__((deprecated)) __attribute__((alloc_size(1)));
/*! @function IOFreeContiguous
- @abstract Frees memory allocated with IOMallocContiguous.
+ @abstract Deprecated - use IOBufferMemoryDescriptor. Frees memory allocated with IOMallocContiguous.
@discussion This function frees memory allocated with IOMallocContiguous, it may block and so should not be called from interrupt level or while a simple lock is held.
@param address Virtual address of the allocated memory.
@param size Size of the memory allocated. */
-void IOFreeContiguous(void * address, vm_size_t size);
+void IOFreeContiguous(void * address, vm_size_t size) __attribute__((deprecated));
/*! @function IOMallocPageable
@param alignment Byte count of the alignment for the memory. For example, pass 256 to get memory allocated at an address with bits 0-7 zero.
@result Pointer to the allocated memory, or zero on failure. */
-void * IOMallocPageable(vm_size_t size, vm_size_t alignment);
+void * IOMallocPageable(vm_size_t size, vm_size_t alignment) __attribute__((alloc_size(1)));
/*! @function IOFreePageable
@abstract Frees memory allocated with IOMallocPageable.
/*
* Typed memory allocation macros. Both may block.
*/
-#define IONew(type,number) (type*)IOMalloc(sizeof(type) * (number) )
+#define IONew(type,number) \
+( ((number) != 0 && ((vm_size_t) ((sizeof(type) * (number) / (number))) != sizeof(type)) /* overflow check 20847256 */ \
+ ? 0 \
+ : ((type*)IOMalloc(sizeof(type) * (number)))) )
+
#define IODelete(ptr,type,number) IOFree( (ptr) , sizeof(type) * (number) )
/////////////////////////////////////////////////////////////////////////////
void IOMappedWrite64(IOPhysicalAddress address, UInt64 value);
-/*! @function IOSetProcessorCacheMode
- @abstract Sets the processor cache mode for mapped memory.
- @discussion This function sets the cache mode of an already mapped & wired memory range. Note this may not be supported on I/O mappings or shared memory - it is far preferable to set the cache mode as mappings are created with the IOMemoryDescriptor::map method.
- @param task Task the memory is mapped into.
- @param address Virtual address of the memory.
- @param length Length of the range to set.
- @param cacheMode A constant from IOTypes.h, <br>
- kIOMapDefaultCache to inhibit the cache in I/O areas, kIOMapCopybackCache in general purpose RAM.<br>
- kIOMapInhibitCache, kIOMapWriteThruCache, kIOMapCopybackCache to set the appropriate caching.<br>
- @result An IOReturn code.*/
+/* This function is deprecated. Cache settings may be set for allocated memory with the IOBufferMemoryDescriptor api. */
IOReturn IOSetProcessorCacheMode( task_t task, IOVirtualAddress address,
- IOByteCount length, IOOptionBits cacheMode );
+ IOByteCount length, IOOptionBits cacheMode ) __attribute__((deprecated));
/*! @function IOFlushProcessorCache
@abstract Flushes the processor cache for mapped memory.
#define IOThreadSelf() (current_thread())
/*! @function IOCreateThread
- @abstract Create a kernel thread.
- @discussion This function creates a kernel thread, and passes the caller supplied argument to the new thread.
+ @abstract Deprecated function - use kernel_thread_start(). Create a kernel thread.
+ @discussion This function creates a kernel thread, and passes the caller supplied argument to the new thread. Warning: the value returned by this function is not 100% reliable. There is a race condition where it is possible that the new thread has already terminated before this call returns. Under that circumstance the IOThread returned will be invalid. In general there is little that can be done with this value except compare it against 0. The thread itself can call IOThreadSelf() 100% reliably and that is the prefered mechanism to manipulate the IOThreads state.
@param function A C-function pointer where the thread will begin execution.
@param argument Caller specified data to be passed to the new thread.
@result An IOThread identifier for the new thread, equivalent to an osfmk thread_t. */
-IOThread IOCreateThread(IOThreadFunc function, void *argument);
+IOThread IOCreateThread(IOThreadFunc function, void *argument) __attribute__((deprecated));
/*! @function IOExitThread
- @abstract Terminate exceution of current thread.
+ @abstract Deprecated function - use thread_terminate(). Terminate execution of current thread.
@discussion This function destroys the currently running thread, and does not return. */
-void IOExitThread(void) __dead2;
+void IOExitThread(void) __attribute__((deprecated));
/*! @function IOSleep
@abstract Sleep the calling thread for a number of milliseconds.
void IOSleep(unsigned milliseconds);
+/*! @function IOSleepWithLeeway
+ @abstract Sleep the calling thread for a number of milliseconds, with a specified leeway the kernel may use for timer coalescing.
+ @discussion This function blocks the calling thread for at least the number of specified milliseconds, giving time to other processes. The kernel may also coalesce any timers involved in the delay, using the leeway given as a guideline.
+ @param intervalMilliseconds The integer number of milliseconds to wait.
+ @param leewayMilliseconds The integer number of milliseconds to use as a timer coalescing guideline. */
+
+void IOSleepWithLeeway(unsigned intervalMilliseconds, unsigned leewayMilliseconds);
+
/*! @function IODelay
@abstract Spin delay for a number of microseconds.
@discussion This function spins to delay for at least the number of specified microseconds. Since the CPU is busy spinning no time is made available to other processes; this method of delay should be used only for short periods. Also, the AbsoluteTime based APIs of kern/clock.h provide finer grained and lower cost delays.
void IODelay(unsigned microseconds);
+/*! @function IOPause
+ @abstract Spin delay for a number of nanoseconds.
+ @discussion This function spins to delay for at least the number of specified nanoseconds. Since the CPU is busy spinning no time is made available to other processes; this method of delay should be used only for short periods.
+ @param nanoseconds The integer number of nanoseconds to spin wait. */
+
+void IOPause(unsigned nanoseconds);
+
/*! @function IOLog
@abstract Log a message to console in text mode, and /var/log/system.log.
@discussion This function allows a driver to log diagnostic information to the screen during verbose boots, and to a log file found at /var/log/system.log. IOLog should not be called from interrupt context.
- @param format A printf() style format string (see printf() documentation).
- @param other arguments described by the format string. */
+ @param format A printf() style format string (see printf(3) documentation).
+ */
void IOLog(const char *format, ...)
__attribute__((format(printf, 1, 2)));
+/*! @function IOLogv
+ @abstract Log a message to console in text mode, and /var/log/system.log.
+ @discussion This function allows a driver to log diagnostic information to the screen during verbose boots, and to a log file found at /var/log/system.log. IOLogv should not be called from interrupt context.
+ @param format A printf() style format string (see printf(3) documentation).
+ @param ap stdarg(3) style variable arguments. */
+
+void IOLogv(const char *format, va_list ap)
+__attribute__((format(printf, 1, 0)));
+
#ifndef _FN_KPRINTF
#define _FN_KPRINTF
void kprintf(const char *format, ...);
@param reason A C-string to describe why the debugger is being entered. */
void Debugger(const char * reason);
+#if __LP64__
+#define IOPanic(reason) panic("%s", reason)
+#else
+void IOPanic(const char *reason) __attribute__((deprecated));
+#endif
+
+#ifdef __cplusplus
+class OSDictionary;
+#endif
-struct OSDictionary * IOBSDNameMatching( const char * name );
-struct OSDictionary * IOOFPathMatching( const char * path, char * buf, int maxLen );
+#ifdef __cplusplus
+OSDictionary *
+#else
+struct OSDictionary *
+#endif
+IOBSDNameMatching( const char * name );
+
+#ifdef __cplusplus
+OSDictionary *
+#else
+struct OSDictionary *
+#endif
+IOOFPathMatching( const char * path, char * buf, int maxLen ) __attribute__((deprecated));
/*
* Convert between size and a power-of-two alignment.
(((value) / (multiple)) * (multiple));
-#ifdef __APPLE_API_OBSOLETE
+#if defined(__APPLE_API_OBSOLETE)
/* The following API is deprecated */
-#undef eieio
-#define eieio() \
- OSSynchronizeIO()
-
-void IOPanic(const char *reason);
-
/* The API exported by kern/clock.h
should be used for high resolution timing. */
-void IOGetTime( mach_timespec_t * clock_time);
+void IOGetTime( mach_timespec_t * clock_time) __attribute__((deprecated));
+
+#if !defined(__LP64__)
+
+#undef eieio
+#define eieio() \
+ OSSynchronizeIO()
extern mach_timespec_t IOZeroTvalspec;
+#endif /* !defined(__LP64__) */
+
#endif /* __APPLE_API_OBSOLETE */
+#if XNU_KERNEL_PRIVATE
+vm_tag_t
+IOMemoryTag(vm_map_t map);
+#endif
+
__END_DECLS
#endif /* !__IOKIT_IOLIB_H */
projects / apple / xnu.git / blobdiff