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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 /src/dev/x86/i82094aa.hh
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 'src/dev/x86/i82094aa.hh')
-rw-r--r--src/dev/x86/i82094aa.hh2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/dev/x86/i82094aa.hh b/src/dev/x86/i82094aa.hh
index dfef059c3..60ef27012 100644
--- a/src/dev/x86/i82094aa.hh
+++ b/src/dev/x86/i82094aa.hh
@@ -123,7 +123,7 @@ class I82094AA : public PioDevice, public IntDev
Port *getPort(const std::string &if_name, int idx = -1)
{
- if (if_name == "int_port")
+ if (if_name == "int_master")
return intPort;
return PioDevice::getPort(if_name, idx);
}