diff options
Diffstat (limited to 'src/mem/packet.hh')
-rw-r--r-- | src/mem/packet.hh | 98 |
1 files changed, 72 insertions, 26 deletions
diff --git a/src/mem/packet.hh b/src/mem/packet.hh index 48b32ec47..d8ad49bdb 100644 --- a/src/mem/packet.hh +++ b/src/mem/packet.hh @@ -38,14 +38,15 @@ #ifndef __MEM_PACKET_HH__ #define __MEM_PACKET_HH__ +#include <cassert> +#include <list> + #include "mem/request.hh" #include "sim/host.hh" #include "sim/root.hh" -#include <list> -#include <cassert> struct Packet; -typedef Packet* PacketPtr; +typedef Packet *PacketPtr; typedef uint8_t* PacketDataPtr; typedef std::list<PacketPtr> PacketList; @@ -102,7 +103,7 @@ class Packet /** Device address (e.g., bus ID) of the source of the * transaction. The source is not responsible for setting this * field; it is set implicitly by the interconnect when the - * packet * is first sent. */ + * packet is first sent. */ short src; /** Device address (e.g., bus ID) of the destination of the @@ -202,7 +203,10 @@ class Packet HardPFResp = IsRead | IsResponse | IsHWPrefetch | NeedsResponse | HasData, InvalidateReq = IsInvalidate | IsRequest, - WriteInvalidateReq = IsWrite | IsInvalidate | IsRequest | HasData, + WriteInvalidateReq = IsWrite | IsInvalidate | IsRequest + | HasData | NeedsResponse, + WriteInvalidateResp = IsWrite | IsInvalidate | IsRequest | NeedsResponse + | IsResponse, UpgradeReq = IsInvalidate | IsRequest | IsUpgrade, ReadExReq = IsRead | IsInvalidate | IsRequest | NeedsResponse, ReadExResp = IsRead | IsInvalidate | IsResponse @@ -339,10 +343,12 @@ class Packet srcValid = false; } - /** Take a request packet and modify it in place to be suitable - * for returning as a response to that request. + /** + * Take a request packet and modify it in place to be suitable for + * returning as a response to that request. */ - void makeAtomicResponse() { + void makeAtomicResponse() + { assert(needsResponse()); assert(isRequest()); int icmd = (int)cmd; @@ -355,50 +361,90 @@ class Packet cmd = (Command)icmd; } - /** Take a request packet that has been returned as NACKED and modify it so - * that it can be sent out again. Only packets that need a response can be - * NACKED, so verify that that is true. */ - void reinitNacked() { + /** + * Take a request packet that has been returned as NACKED and + * modify it so that it can be sent out again. Only packets that + * need a response can be NACKED, so verify that that is true. + */ + void + reinitNacked() + { assert(needsResponse() && result == Nacked); dest = Broadcast; result = Unknown; } - /** Set the data pointer to the following value that should not be freed. */ + /** + * Set the data pointer to the following value that should not be + * freed. + */ template <typename T> - void dataStatic(T *p); + void + dataStatic(T *p) + { + if(dynamicData) + dynamicData = false; + data = (PacketDataPtr)p; + staticData = true; + } - /** Set the data pointer to a value that should have delete [] called on it. + /** + * Set the data pointer to a value that should have delete [] + * called on it. */ template <typename T> - void dataDynamicArray(T *p); + void + dataDynamicArray(T *p) + { + assert(!staticData && !dynamicData); + data = (PacketDataPtr)p; + dynamicData = true; + arrayData = true; + } - /** set the data pointer to a value that should have delete called on it. */ + /** + * set the data pointer to a value that should have delete called + * on it. + */ template <typename T> - void dataDynamic(T *p); + void + dataDynamic(T *p) + { + assert(!staticData && !dynamicData); + data = (PacketDataPtr)p; + dynamicData = true; + arrayData = false; + } - /** return the value of what is pointed to in the packet. */ + /** get a pointer to the data ptr. */ template <typename T> - T get(); + T* + getPtr() + { + assert(staticData || dynamicData); + return (T*)data; + } - /** get a pointer to the data ptr. */ + /** return the value of what is pointed to in the packet. */ template <typename T> - T* getPtr(); + T get(); /** set the value in the data pointer to v. */ template <typename T> void set(T v); - /** delete the data pointed to in the data pointer. Ok to call to matter how - * data was allocted. */ + /** + * delete the data pointed to in the data pointer. Ok to call to + * matter how data was allocted. + */ void deleteData(); /** If there isn't data in the packet, allocate some. */ void allocate(); /** Do the packet modify the same addresses. */ - bool intersect(Packet *p); + bool intersect(PacketPtr p); }; @@ -407,7 +453,7 @@ class Packet * in the timing packet. It returns if the functional packet should continue to * traverse the memory hierarchy or not. */ -bool fixPacket(Packet *func, Packet *timing); +bool fixPacket(PacketPtr func, PacketPtr timing); std::ostream & operator<<(std::ostream &o, const Packet &p); |