MEM: Add port proxies instead of non-structural ports

Port proxies are used to replace non-structural ports, and thus enable
all ports in the system to correspond to a structural entity. This has
the advantage of accessing memory through the normal memory subsystem
and thus allowing any constellation of distributed memories, address
maps, etc. Most accesses are done through the "system port" that is
used for loading binaries, debugging etc. For the entities that belong
to the CPU, e.g. threads and thread contexts, they wrap the CPU data
port in a port proxy.

The following replacements are made:
FunctionalPort      > PortProxy
TranslatingPort     > SETranslatingPortProxy
VirtualPort         > FSTranslatingPortProxy

--HG--
rename : src/mem/vport.cc => src/mem/fs_translating_port_proxy.cc
rename : src/mem/vport.hh => src/mem/fs_translating_port_proxy.hh
rename : src/mem/translating_port.cc => src/mem/se_translating_port_proxy.cc
rename : src/mem/translating_port.hh => src/mem/se_translating_port_proxy.hh

1 files changed, 29 insertions, 21 deletions

diff --git a/src/arch/alpha/system.cc b/src/arch/alpha/system.cc
index 6a55ef8ae..c7a646893 100644
--- a/src/arch/alpha/system.cc
+++ b/src/arch/alpha/system.cc
@@ -38,8 +38,7 @@
 #include "base/loader/symtab.hh"
 #include "base/trace.hh"
 #include "debug/Loader.hh"
-#include "mem/physical.hh"
-#include "mem/vport.hh"
+#include "mem/fs_translating_port_proxy.hh"
 #include "params/AlphaSystem.hh"
 #include "sim/byteswap.hh"
 
@@ -64,11 +63,30 @@ AlphaSystem::AlphaSystem(Params *p)
     pal = createObjectFile(params()->pal);
     if (pal == NULL)
         fatal("Could not load PALcode file %s", params()->pal);
+}
+
+AlphaSystem::~AlphaSystem()
+{
+    delete consoleSymtab;
+    delete console;
+    delete pal;
+#ifdef DEBUG
+    delete consolePanicEvent;
+#endif
+}
+
+void
+AlphaSystem::initState()
+{
+    // Moved from the constructor to here since it relies on the
+    // address map being resolved in the interconnect
 
+    // Call the initialisation of the super class
+    System::initState();
 
     // Load program sections into memory
-    pal->loadSections(functionalPort, loadAddrMask);
-    console->loadSections(functionalPort, loadAddrMask);
+    pal->loadSections(physProxy, loadAddrMask);
+    console->loadSections(physProxy, loadAddrMask);
 
     // load symbols
     if (!console->loadGlobalSymbols(consoleSymtab))
@@ -101,8 +119,8 @@ AlphaSystem::AlphaSystem(Params *p)
      * others do.)
      */
     if (consoleSymtab->findAddress("env_booted_osflags", addr)) {
-        virtPort->writeBlob(addr, (uint8_t*)params()->boot_osflags.c_str(),
-                strlen(params()->boot_osflags.c_str()));
+        virtProxy->writeBlob(addr, (uint8_t*)params()->boot_osflags.c_str(),
+                             strlen(params()->boot_osflags.c_str()));
     }
 
     /**
@@ -112,23 +130,13 @@ AlphaSystem::AlphaSystem(Params *p)
     if (consoleSymtab->findAddress("m5_rpb", addr)) {
         uint64_t data;
         data = htog(params()->system_type);
-        virtPort->write(addr+0x50, data);
+        virtProxy->write(addr+0x50, data);
         data = htog(params()->system_rev);
-        virtPort->write(addr+0x58, data);
+        virtProxy->write(addr+0x58, data);
     } else
         panic("could not find hwrpb\n");
 }
 
-AlphaSystem::~AlphaSystem()
-{
-    delete consoleSymtab;
-    delete console;
-    delete pal;
-#ifdef DEBUG
-    delete consolePanicEvent;
-#endif
-}
-
 /**
  * This function fixes up addresses that are used to match PCs for
  * hooking simulator events on to target function executions.
@@ -170,8 +178,8 @@ AlphaSystem::fixFuncEventAddr(Addr addr)
     // lda  gp,Y(gp): opcode 8, Ra = 29, rb = 29
     const uint32_t gp_lda_pattern  = (8 << 26) | (29 << 21) | (29 << 16);
 
-    uint32_t i1 = virtPort->read<uint32_t>(addr);
-    uint32_t i2 = virtPort->read<uint32_t>(addr + sizeof(MachInst));
+    uint32_t i1 = virtProxy->read<uint32_t>(addr);
+    uint32_t i2 = virtProxy->read<uint32_t>(addr + sizeof(MachInst));
 
     if ((i1 & inst_mask) == gp_ldah_pattern &&
         (i2 & inst_mask) == gp_lda_pattern) {
@@ -188,7 +196,7 @@ AlphaSystem::setAlphaAccess(Addr access)
 {
     Addr addr = 0;
     if (consoleSymtab->findAddress("m5AlphaAccess", addr)) {
-        virtPort->write(addr, htog(Phys2K0Seg(access)));
+        virtProxy->write(addr, htog(Phys2K0Seg(access)));
     } else {
         panic("could not find m5AlphaAccess\n");
     }