zcy
/
pluto_hdl_adi
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

axi_dmac: Disable dummy AXI ports for Xilinx IPI 

The memory mapped AXI interfaces for the AXI-DMAC are uni-directional.
Which means they are either write-only or read-only. Unfortunately the
Altera tools can't handle this, so we had to add dummy signals for the
other direction.

The Xilinx tools on the other hand handle uni-directional AXI interfaces
and in fact IPI can do a better job and use less resources when creating
the AXI interconnects when it knows that the interface is uni-directional.
So always disable the dummy ports for the IPI package.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
main
Lars-Peter Clausen 2015-08-20 18:12:04 +02:00
parent 9b37d6bfe7
commit e0b5044aa3
1 changed files with 40 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
library/axi_dmac/axi_dmac_ip.tcl
View File

@ -101,6 +101,46 @@ foreach p $dummy_axi_ports {
adi_set_ports_dependency $p "0"
}
# These are in the design to keep the Altera tools happy which can't handle
# uni-directional AXI interfaces. The Xilinx tools can and do a better job when
# they know that the interface is uni-directional, so disable the ports.
set dummy_axi_ports [list \
"m_dest_axi_arvalid" \
"m_dest_axi_arready" \
"m_dest_axi_araddr" \
"m_dest_axi_arlen" \
"m_dest_axi_arsize" \
"m_dest_axi_arburst" \
"m_dest_axi_arcache" \
"m_dest_axi_arprot" \
"m_dest_axi_rready" \
"m_dest_axi_rvalid" \
"m_dest_axi_rresp" \
"m_dest_axi_rdata" \
"m_src_axi_awvalid" \
"m_src_axi_awready" \
"m_src_axi_awvalid" \
"m_src_axi_awaddr" \
"m_src_axi_awlen" \
"m_src_axi_awsize" \
"m_src_axi_awburst" \
"m_src_axi_awcache" \
"m_src_axi_awprot" \
"m_src_axi_wvalid" \
"m_src_axi_wready" \
"m_src_axi_wvalid" \
"m_src_axi_wdata" \
"m_src_axi_wstrb" \
"m_src_axi_wlast" \
"m_src_axi_bready" \
"m_src_axi_bvalid" \
"m_src_axi_bresp" \
]
foreach p $dummy_axi_ports {
adi_set_ports_dependency $p "0"
}
adi_add_bus "fifo_wr" "slave" \
"analog.com:interface:fifo_wr_rtl:1.0" \
"analog.com:interface:fifo_wr:1.0" \