Changes between Initial Version and Version 1 of Component/Vci Local Crossbar

Timestamp:

Jan 28, 2008, 6:08:35 PM (16 years ago)

Author:

Nicolas Pouillon

Comment:

Local crossbar

Component/Vci Local Crossbar

@@ +1 @@
+[wiki:Component SocLib Components General Index] 
+
+= !VciLocalCrossbar Functional Description =
+
+This hardware component is a generic VCI crossbar, it contains two
+independant crossbars for VCI commands and VCI responses.
+
+When several initiators try to reach the same target, the arbitration
+policy is round-robin.
+It gives the system designer a generic "communication black-box" with
+a parametrized number of VCI initiator ports (NB_INITIATOR), 
+and a parameterized number of VCI target ports (NB_TARGET). 
+
+As any VCI advanced compliant interconnect, this component uses
+the MSB bits of the VCI ADDRESS field to route the command packets
+to the proper target, thanks to a routing table, implemented as a ROM.
+This routing table is build by the constructor from the informations stored in
+the [wiki:Component/MappingTable mapping table].
+It uses the VCI RSRCID field to route the response packet to the initiator.
+
+= Component definition =
+
+Available in source:trunk/soclib/desc/soclib/vci_local_crossbar.sd
+
+== Usage ==
+
+!VciLocalCrossbar has no other parameter than VCI ones, it may be used like others,
+see [wiki:SoclibCc/VciParameters SoclibCc/VciParameters]
+{{{
+Uses( 'vci_local_crossbar', **vci_parameters )
+}}}
+
+= !VciLocalCrossbar CABA  Implementation =
+
+The caba implementation is in 
+ * source:trunk/soclib/systemc/include/caba/interconnect/vci_local_crossbar.h
+ * source:trunk/soclib/systemc/src/caba/interconnect/vci_local_crossbar.cc
+It wraps a [wiki:Component/VciSimpleCrossbar VciSimpleCrossbar].
+
+== Template parameters ==
+
+{{{
+template<typename vci_param>
+}}}
+
+== Constructor parameters ==
+
+{{{
+VciLocalCrossbar(
+     sc_module_name name,
+     const soclib::common::MappingTable &mt,
+     const soclib::common::IntTab &index,
+     size_t nb_initiator,
+     size_t nb_target );
+}}}
+
+== Ports ==
+
+ * sc_in<bool> '''p_resetn''' : Global system reset
+ * sc_in<bool> '''p_clk''' : Global system clock
+ * soclib::caba::!VciTarget<vci_param> '''p_from_initiator[]''' : Ports from VCI initiators
+ * soclib::caba::!VciInitiator<vci_param> '''p_to_target[]''' : Ports to VCI targets
+ * soclib::caba::!VciTarget<vci_param> '''p_initiator_to_up''' : Initiator VCI port to micro-network
+ * soclib::caba::!VciInitiator<vci_param> '''p_target_to_up''' : Target VCI port to micro-network