An n-way arbiter that connects multiple AXI manager ports to a single AXI subordinate port. More...
#include <AxiArbiter.h>
Inheritance diagram for AxiArbiter< axiCfg, numManagers, maxOutstandingRequests >:
Public Types | |
| typedef axi::axi4< axiCfg > | axi_ |
| typedef axi_::read::template subordinate ::ARPort | axi_rd_subordinate_ar |
| typedef axi_::read::template subordinate ::RPort | axi_rd_subordinate_r |
| typedef axi_::write::template subordinate ::AWPort | axi_wr_subordinate_aw |
| typedef axi_::write::template subordinate ::WPort | axi_wr_subordinate_w |
| typedef axi_::write::template subordinate ::BPort | axi_wr_subordinate_b |
Public Member Functions | |
| typedef | NVUINTW (numManagers_width) inFlight_t |
| SC_HAS_PROCESS (AxiArbiter) | |
| AxiArbiter (sc_module_name name) | |
| void | run_ar () |
| void | run_r () |
| void | run_aw () |
| void | run_w () |
| void | run_b () |
Public Attributes | |
| sc_in< bool > | clk |
| sc_in< bool > | reset_bar |
| nvhls::nv_array< axi_rd_subordinate_ar, numManagers > | axi_rd_m_ar |
| nvhls::nv_array< axi_rd_subordinate_r, numManagers > | axi_rd_m_r |
| nvhls::nv_array< axi_wr_subordinate_aw, numManagers > | axi_wr_m_aw |
| nvhls::nv_array< axi_wr_subordinate_w, numManagers > | axi_wr_m_w |
| nvhls::nv_array< axi_wr_subordinate_b, numManagers > | axi_wr_m_b |
| axi_::read::template manager | axi_rd_s |
| axi_::write::template manager | axi_wr_s |
| FIFO< inFlight_t, maxOutstandingRequests > | readQ |
| Connections::Combinational< inFlight_t > | read_in_flight |
| FIFO< inFlight_t, maxOutstandingRequests > | writeQ |
| Connections::Combinational< inFlight_t > | write_in_flight |
| Connections::Combinational< inFlight_t > | active_write_manager |
| Connections::Combinational< NVUINT1 > | w_last |
Static Public Attributes | |
| static const int | kDebugLevel = 5 |
| static const int | numManagers_width = nvhls::log2_ceil<numManagers>::val |
Detailed Description
template<typename axiCfg, int numManagers, int maxOutstandingRequests>
class AxiArbiter< axiCfg, numManagers, maxOutstandingRequests >
An n-way arbiter that connects multiple AXI manager ports to a single AXI subordinate port.
- Template Parameters
-
axiCfg A valid AXI config. numManagers The number of managers to arbitrate between. maxOutstandingRequests The number of oustanding read or write requests that can be tracked with internal state.
- Overview
- AxiArbiter connects one or more AXI managers to a single AXI subordinate. In the case of contention, a round-robin Arbiter selects the next request to pass through.
- The arbiter assumes that responses are returned in the order that requests are sent. Downstream request reordering is currently not supported.
- The AXI configs of all ports must be the same.
- Usage Guidelines
This module sets the stall mode to flush by default to mitigate possible RTL bugs that can occur in the default stall mode. If you are confident that this class of bugs will not occur in your use case, you can change the stall mode via TCL directive:
directive set /path/to/AxiArbiter/run_ar/while -PIPELINE_STALL_MODE stall
An n-way arbiter that connects multiple AXI manager ports to a single AXI subordinate port.
Definition: AxiArbiter.h:58
This may reduce area/power.
Definition at line 58 of file AxiArbiter.h.
The documentation for this class was generated from the following file:
