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, 19 insertions, 7 deletions

diff --git a/src/arch/alpha/linux/system.cc b/src/arch/alpha/linux/system.cc
index 6ca603a3b..19a2a6ac3 100644
--- a/src/arch/alpha/linux/system.cc
+++ b/src/arch/alpha/linux/system.cc
@@ -64,6 +64,17 @@ using namespace Linux;
 LinuxAlphaSystem::LinuxAlphaSystem(Params *p)
     : AlphaSystem(p)
 {
+}
+
+void
+LinuxAlphaSystem::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
+    AlphaSystem::initState();
+
     Addr addr = 0;
 
     /**
@@ -78,8 +89,9 @@ LinuxAlphaSystem::LinuxAlphaSystem(Params *p)
      * Since we aren't using a bootloader, we have to copy the
      * kernel arguments directly into the kernel's memory.
      */
-    virtPort->writeBlob(CommandLine(), (uint8_t*)params()->boot_osflags.c_str(),
-                params()->boot_osflags.length()+1);
+    virtProxy->writeBlob(CommandLine(),
+                         (uint8_t*)params()->boot_osflags.c_str(),
+                         params()->boot_osflags.length()+1);
 
     /**
      * find the address of the est_cycle_freq variable and insert it
@@ -87,8 +99,8 @@ LinuxAlphaSystem::LinuxAlphaSystem(Params *p)
      * calculated it by using the PIT, RTC, etc.
      */
     if (kernelSymtab->findAddress("est_cycle_freq", addr))
-        virtPort->write(addr, (uint64_t)(SimClock::Frequency /
-                    p->boot_cpu_frequency));
+        virtProxy->write(addr, (uint64_t)(SimClock::Frequency /
+                                          params()->boot_cpu_frequency));
 
 
     /**
@@ -98,7 +110,7 @@ LinuxAlphaSystem::LinuxAlphaSystem(Params *p)
      * 255 ASNs.
      */
     if (kernelSymtab->findAddress("dp264_mv", addr))
-        virtPort->write(addr + 0x18, LittleEndianGuest::htog((uint32_t)127));
+        virtProxy->write(addr + 0x18, LittleEndianGuest::htog((uint32_t)127));
     else
         panic("could not find dp264_mv\n");
 
@@ -165,9 +177,9 @@ LinuxAlphaSystem::setDelayLoop(ThreadContext *tc)
     if (kernelSymtab->findAddress("loops_per_jiffy", addr)) {
         Tick cpuFreq = tc->getCpuPtr()->frequency();
         Tick intrFreq = platform->intrFrequency();
-        VirtualPort *vp;
+        FSTranslatingPortProxy* vp;
 
-        vp = tc->getVirtPort();
+        vp = tc->getVirtProxy();
         vp->writeHtoG(addr, (uint32_t)((cpuFreq / intrFreq) * 0.9988));
     }
 }