diff options
Diffstat (limited to 'src/mem/ruby/storebuffer/storebuffer.hh')
| -rw-r--r-- | src/mem/ruby/storebuffer/storebuffer.hh | 163 |
1 files changed, 75 insertions, 88 deletions
diff --git a/src/mem/ruby/storebuffer/storebuffer.hh b/src/mem/ruby/storebuffer/storebuffer.hh index 67555f48f..6d476706b 100644 --- a/src/mem/ruby/storebuffer/storebuffer.hh +++ b/src/mem/ruby/storebuffer/storebuffer.hh @@ -26,23 +26,18 @@ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -#ifndef _STOREBUFFER_H_ -#define _STOREBUFFER_H_ +#ifndef __MEM_RUBY_STOREBUFFER_STOREBUFFER_HH__ +#define __MEM_RUBY_STOREBUFFER_STOREBUFFER_HH__ -#include <map> #include <deque> +#include <map> -#include "config/ruby_tso_checker.hh" -#include "mem/ruby/storebuffer/hfa.hh" +#include "mem/ruby/common/TypeDefines.hh" #include "mem/ruby/libruby.hh" -#if RUBY_TSO_CHECKER -#include "TsoCheckerCmd.hh" -#endif - /** - * Status for write buffer accesses. The Write buffer can hit in fastpath, be full, or - * successfully enqueue the store request + * Status for write buffer accesses. The Write buffer can hit in + * fastpath, be full, or successfully enqueue the store request */ enum storebuffer_status_t { WB_FULL, WB_OK, WB_FLUSHING }; @@ -51,114 +46,106 @@ enum storebuffer_status_t { WB_FULL, WB_OK, WB_FLUSHING }; */ enum load_match { NO_MATCH, PARTIAL_MATCH, FULL_MATCH }; -struct SBEntry { - struct RubyRequest m_request; -#if RUBY_TSO_CHECKER - Tso::TsoCheckerCmd * m_next_ptr; -#endif - SBEntry(struct RubyRequest request, void * ptr) - : m_request(request) +struct SBEntry +{ + RubyRequest m_request; + + SBEntry(RubyRequest request, void * ptr) + : m_request(request) { -#if RUBY_TSO_CHECKER - m_next_ptr = (Tso::TsoCheckerCmd*) ptr; -#endif } }; -class StoreBuffer { - public: - ///Constructor - /// Note that the size of the Write Buffer is determined by the WRITE_BUFFER_SIZE config parameter - StoreBuffer(uint32 id, uint32 block_bits, int storebuffer_size); - - /// Register hitcallback back to CPU - void registerHitCallback(void (*hit_callback)(int64_t request_id)); - - /// Destructor - ~StoreBuffer(); +class StoreBuffer +{ + public: + /// Note that the size of the Write Buffer is determined by the + /// WRITE_BUFFER_SIZE config parameter + StoreBuffer(uint32_t id, uint32_t block_bits, int storebuffer_size); - ///Adds a store entry to the write buffer - void addToStoreBuffer(struct RubyRequest request); + ~StoreBuffer(); - ///Flushes the entire write buffer - void flushStoreBuffer(); + /// Register hitcallback back to CPU + void registerHitCallback(void (*hit_callback)(int64_t request_id)); - ///A pseq object calls this when Ruby completes our request - void complete(uint64_t); + ///Adds a store entry to the write buffer + void addToStoreBuffer(RubyRequest request); - /// Returns ID. If ID == -2, HIT, else it's an ID to wait on - int64_t handleLoad(struct RubyRequest request); + ///Flushes the entire write buffer + void flushStoreBuffer(); - /// Used by all load insts to check whether it hits to any entry in the WB. If so, the WB is flushed - load_match checkForLoadHit(struct RubyRequest request); + ///A pseq object calls this when Ruby completes our request + void complete(uint64_t); - /// Used to fill the load in case of FULL_MATCH - void returnMatchedData(struct RubyRequest request); + /// Returns ID. If ID == -2, HIT, else it's an ID to wait on + int64_t handleLoad(RubyRequest request); - /// Issue next store in line - void issueNextStore(); + /// Used by all load insts to check whether it hits to any entry + /// in the WB. If so, the WB is flushed + load_match checkForLoadHit(RubyRequest request); - /// prints out the contents of the Write Buffer - void print(); + /// Used to fill the load in case of FULL_MATCH + void returnMatchedData(RubyRequest request); -#if RUBY_TSO_CHECKER - /// if load completes before store, insert correctly to be issued to TSOChecker - void insertTsoLL(Tso::TsoCheckerCmd * cmd); -#endif + /// Issue next store in line + void issueNextStore(); - /// Returns flag indicating whether we are using the write buffer - bool useStoreBuffer() { return m_use_storebuffer; } + /// prints out the contents of the Write Buffer + void print(); - bool storeBufferFull() { return m_storebuffer_full; } + /// Returns flag indicating whether we are using the write buffer + bool useStoreBuffer() { return m_use_storebuffer; } - bool storeBufferFlushing() { return m_storebuffer_flushing; } + bool storeBufferFull() { return m_storebuffer_full; } - private: - /// id of this write buffer (one per sequencer object) - uint32 m_id; + bool storeBufferFlushing() { return m_storebuffer_flushing; } - /// number of bytes in cacheline - uint32 m_block_size; + private: + /// id of this write buffer (one per sequencer object) + uint32_t m_id; - /// the size of the write buffer - uint32 m_storebuffer_size; + /// number of bytes in cacheline + uint32_t m_block_size; - /// mask to strip off non-cache line bits - pa_t m_block_mask; + /// the size of the write buffer + uint32_t m_storebuffer_size; - /// list of store requests in the write buffer - deque <struct SBEntry> buffer; + /// mask to strip off non-cache line bits + pa_t m_block_mask; - /// the current length of the write buffer - uint32 m_buffer_size; + /// list of store requests in the write buffer + std::deque<SBEntry> buffer; - /// whether we want to simulate the write buffer or not: - bool m_use_storebuffer; + /// the current length of the write buffer + uint32_t m_buffer_size; - /// indicates whether the write buffer is full or not - bool m_storebuffer_full; + /// whether we want to simulate the write buffer or not: + bool m_use_storebuffer; - /// indicates that we are currently flushing the write buffer - bool m_storebuffer_flushing; + /// indicates whether the write buffer is full or not + bool m_storebuffer_full; - /// indicates that automatic issue is stalled and the next store to be added should issue itself - bool m_stalled_issue; + /// indicates that we are currently flushing the write buffer + bool m_storebuffer_flushing; - /// RubyPort to make requests to - RubyPortHandle m_port; + /// indicates that automatic issue is stalled and the next store + /// to be added should issue itself + bool m_stalled_issue; - /// HitCallback to CPU - void (*m_hit_callback)(int64_t); + /// RubyPort to make requests to + RubyPortHandle m_port; - /// Map the request id to rubyrequest - map<uint64_t, struct RubyRequest> outstanding_requests; + /// HitCallback to CPU + void (*m_hit_callback)(int64_t); - /// current instruction counter - uint64_t iseq; + /// Map the request id to rubyrequest + std::map<uint64_t, RubyRequest> outstanding_requests; + /// current instruction counter + uint64_t iseq; - /// input into tso counter - uint64_t tso_iseq; + /// input into tso counter + uint64_t tso_iseq; }; -#endif +#endif // __MEM_RUBY_STOREBUFFER_STOREBUFFER_HH__ |