From c86f849d5a1da1fc77f2fca43b82cb6760f68bc9 Mon Sep 17 00:00:00 2001 From: "Brad Beckmann ext:(%2C%20Nilay%20Vaish%20%3Cnilay%40cs.wisc.edu%3E)" Date: Thu, 30 Jun 2011 19:49:26 -0500 Subject: Ruby: Add support for functional accesses This patch rpovides functional access support in Ruby. Currently only the M5Port of RubyPort supports functional accesses. The support for functional through the PioPort will be added as a separate patch. --- src/mem/protocol/MESI_CMP_directory-L2cache.sm | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'src/mem/protocol/MESI_CMP_directory-L2cache.sm') diff --git a/src/mem/protocol/MESI_CMP_directory-L2cache.sm b/src/mem/protocol/MESI_CMP_directory-L2cache.sm index 6044f5233..a8fcb07d1 100644 --- a/src/mem/protocol/MESI_CMP_directory-L2cache.sm +++ b/src/mem/protocol/MESI_CMP_directory-L2cache.sm @@ -56,7 +56,7 @@ machine(L2Cache, "MESI Directory L2 Cache CMP") NP, AccessPermission:Invalid, desc="Not present in either cache"; SS, AccessPermission:Read_Only, desc="L2 cache entry Shared, also present in one or more L1s"; M, AccessPermission:Read_Write, desc="L2 cache entry Modified, not present in any L1s", format="!b"; - MT, AccessPermission:Invalid, desc="L2 cache entry Modified in a local L1, assume L2 copy stale", format="!b"; + MT, AccessPermission:Maybe_Stale, desc="L2 cache entry Modified in a local L1, assume L2 copy stale", format="!b"; // L2 replacement M_I, AccessPermission:Busy, desc="L2 cache replacing, have all acks, sent dirty data to memory, waiting for ACK from memory"; @@ -217,17 +217,24 @@ machine(L2Cache, "MESI Directory L2 Cache CMP") AccessPermission getAccessPermission(Address addr) { TBE tbe := L2_TBEs[addr]; if(is_valid(tbe)) { + DPRINTF(RubySlicc, "%s\n", L2Cache_State_to_permission(tbe.TBEState)); return L2Cache_State_to_permission(tbe.TBEState); } Entry cache_entry := getCacheEntry(addr); if(is_valid(cache_entry)) { + DPRINTF(RubySlicc, "%s\n", L2Cache_State_to_permission(cache_entry.CacheState)); return L2Cache_State_to_permission(cache_entry.CacheState); } + DPRINTF(RubySlicc, "%s\n", AccessPermission:NotPresent); return AccessPermission:NotPresent; } + DataBlock getDataBlock(Address addr), return_by_ref="yes" { + return getCacheEntry(addr).DataBlk; + } + void setAccessPermission(Entry cache_entry, Address addr, State state) { if (is_valid(cache_entry)) { cache_entry.changePermission(L2Cache_State_to_permission(state)); -- cgit v1.2.3