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L4Re Operating System Framework
Interface and Usage Documentation
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Various functions for cache consistency. More...
Functions | |
L4_BEGIN_DECLS int | l4_cache_clean_data (unsigned long start, unsigned long end) L4_NOTHROW |
Cache clean a range in D-cache; writes back to PoC. | |
int | l4_cache_flush_data (unsigned long start, unsigned long end) L4_NOTHROW |
Cache flush a range; writes back to PoC. | |
int | l4_cache_inv_data (unsigned long start, unsigned long end) L4_NOTHROW |
Cache invalidate a range; might write back to PoC. | |
int | l4_cache_coherent (unsigned long start, unsigned long end) L4_NOTHROW |
Make memory coherent between I-cache and D-cache; writes back to PoU. | |
int | l4_cache_dma_coherent (unsigned long start, unsigned long end) L4_NOTHROW |
Make memory coherent for use with external memory; writes back to PoC. | |
int | l4_cache_dma_coherent_full (void) L4_NOTHROW |
Make memory coherent for use with external memory; writes back to PoC. |
Various functions for cache consistency.
These functions shall be used to ensure that
Certain functions are NOPs on certain architectures, for example on Intel it's not necessary to explicitly make caches coherent to PoU.
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inline |
Cache clean a range in D-cache; writes back to PoC.
start | Start of range (inclusive) |
end | End of range (exclusive) |
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Writes back any dirty cache lines in the range but leaves them in the cache and marks the cached copies clean.
Definition at line 70 of file cache.h.
References L4_NOTHROW.
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inline |
Make memory coherent between I-cache and D-cache; writes back to PoU.
start | Start of range (inclusive) |
end | End of range (exclusive) |
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Definition at line 94 of file cache.h.
References L4_NOTHROW.
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inline |
Make memory coherent for use with external memory; writes back to PoC.
start | Start of range (inclusive) |
end | End of range (exclusive) |
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Definition at line 102 of file cache.h.
References L4_NOTHROW.
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inline |
Cache flush a range; writes back to PoC.
start | Start of range (inclusive) |
end | End of range (exclusive) |
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Writes back any dirty cache lines and invalidates all cache entries in the range.
Definition at line 78 of file cache.h.
References L4_NOTHROW.
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inline |
Cache invalidate a range; might write back to PoC.
start | Start of range (inclusive) |
end | End of range (exclusive) |
0 | on success |
-EFAULT | in the case of an unresolved page fault in the given area |
Invalidates all cache entries in the range but does not necessarily write back dirty cache lines.
Definition at line 86 of file cache.h.
References L4_NOTHROW.