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authorAndreas Hansson <andreas.hansson@arm.com>2012-02-13 06:43:09 -0500
committerAndreas Hansson <andreas.hansson@arm.com>2012-02-13 06:43:09 -0500
commit5a9a743cfc4517f93e5c94533efa767b92272c59 (patch)
treef3dbc078a51e5759b26b1a5f16263ddb1cf55a7b /tests/configs/realview-o3-dual.py
parent8cb4a2208d568eb86ad3f6c6bb250bcbe2952302 (diff)
downloadgem5-5a9a743cfc4517f93e5c94533efa767b92272c59.tar.xz
MEM: Introduce the master/slave port roles in the Python classes
This patch classifies all ports in Python as either Master or Slave and enforces a binding of master to slave. Conceptually, a master (such as a CPU or DMA port) issues requests, and receives responses, and conversely, a slave (such as a memory or a PIO device) receives requests and sends back responses. Currently there is no differentiation between coherent and non-coherent masters and slaves. The classification as master/slave also involves splitting the dual role port of the bus into a master and slave port and updating all the system assembly scripts to use the appropriate port. Similarly, the interrupt devices have to have their int_port split into a master and slave port. The intdev and its children have minimal changes to facilitate the extra port. Note that this patch does not enforce any port typing in the C++ world, it merely ensures that the Python objects have a notion of the port roles and are connected in an appropriate manner. This check is carried when two ports are connected, e.g. bus.master = memory.port. The following patches will make use of the classifications and specialise the C++ ports into masters and slaves.
Diffstat (limited to 'tests/configs/realview-o3-dual.py')
-rw-r--r--tests/configs/realview-o3-dual.py8
1 files changed, 4 insertions, 4 deletions
diff --git a/tests/configs/realview-o3-dual.py b/tests/configs/realview-o3-dual.py
index 42532065b..ad1c4752b 100644
--- a/tests/configs/realview-o3-dual.py
+++ b/tests/configs/realview-o3-dual.py
@@ -72,8 +72,8 @@ cpus = [DerivO3CPU(cpu_id=i) for i in xrange(2) ]
#the system
system = FSConfig.makeArmSystem('timing', "RealView_PBX", None, False)
system.iocache = IOCache()
-system.iocache.cpu_side = system.iobus.port
-system.iocache.mem_side = system.membus.port
+system.iocache.cpu_side = system.iobus.master
+system.iocache.mem_side = system.membus.slave
system.cpu = cpus
#create the l1/l2 bus
@@ -81,8 +81,8 @@ system.toL2Bus = Bus()
#connect up the l2 cache
system.l2c = L2(size='4MB', assoc=8)
-system.l2c.cpu_side = system.toL2Bus.port
-system.l2c.mem_side = system.membus.port
+system.l2c.cpu_side = system.toL2Bus.master
+system.l2c.mem_side = system.membus.slave
#connect up the cpu and l1s
for c in cpus: