diff options
Diffstat (limited to 'src/mem/snoop_filter.hh')
| -rwxr-xr-x | src/mem/snoop_filter.hh | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/src/mem/snoop_filter.hh b/src/mem/snoop_filter.hh index 1e7add660..ee2c82b6e 100755 --- a/src/mem/snoop_filter.hh +++ b/src/mem/snoop_filter.hh @@ -1,5 +1,5 @@ /* - * Copyright (c) 2013 ARM Limited + * Copyright (c) 2013-2015 ARM Limited * All rights reserved * * The license below extends only to copyright in the software and shall @@ -203,6 +203,11 @@ class SnoopFilter : public SimObject { SnoopMask holder; }; /** + * HashMap of SnoopItems indexed by line address + */ + typedef m5::hash_map<Addr, SnoopItem> SnoopFilterCache; + + /** * Convert a single port to a corresponding, one-hot bitmask * @param port SlavePort that should be converted. * @return One-hot bitmask corresponding to the port. @@ -222,8 +227,19 @@ class SnoopFilter : public SimObject { SnoopList maskToPortList(SnoopMask ports) const; private: + + /** + * Removes snoop filter items which have no requesters and no holders. + */ + void eraseIfNullEntry(SnoopFilterCache::iterator& sf_it); /** Simple hash set of cached addresses. */ - m5::hash_map<Addr, SnoopItem> cachedLocations; + SnoopFilterCache cachedLocations; + /** + * Variable to temporarily store value of snoopfilter entry + * incase updateRequest needs to undo changes made in lookupRequest + * (because of crossbar retry) + */ + SnoopItem retryItem; /** List of all attached slave ports. */ SnoopList slavePorts; /** Cache line size. */ |