Because the inferface signals which pass through the eval board's
Arduino connector are connected to level shifters the design
will not work at the maximum clk frequency of 48MHz. The maximum
tested frequency is 24MHz.
On architectures with ports that support cache coherency, the AWCACHE
signal must be set to indicate that transactions are cached. This patch
adds a parameter allowing AWCACHE to be set on an AXI4 destination port.
Address size and memory ranges are automatically computed by the
external storage interfacing IP (util_hbm) based on the storage size and
base address so this parameter is redundant.
The internal bypass FIFO has poor timing performance,
when using HBM data can be passed always through the external memory
without storage length constraints, so no need for the internal bypass FIFO.
Make the storage type over writable so it can be set specifically
to carriers.
Address width of external memory AXI master is calculated in the
interfacing core (util_hbm) so that parameters is removed.
The HBM interfacing core requires a 450MHz clock, make it part of the
base design.
The clock can't be obtained from the DDR controller so a clock wizard is
used instead.
Deprecate unused parameters.
Change to MEM_SIZE_LOG2, to support only power of 2 storage sizes for
now. However in the future we might want to add support for non pow2
sizes so register map is not changed.
Change transfer length to -1 value to spare logic.
Change FIFO interface to AXIS to have backpressure, this allows the
implementation of data movement logic in the storage unit and let the
FSM handle high level control an synchronization and control the storage
unit through a control interface.
Refactor FSM to have preparation states where slow storages can be
configured and started ahead of the data handling.
Make bypasss FIFO optional since in some cases causes timing failures
due the missing output register of the memory. This can be targeted in
a later commit.
Hook up underflow/overflow to regmap useful in case of external memory
where rate drops due misconfiguration can be detected.
Cleanup for verilator.
Scripting:
Add HBM and DDR external memory support using util_hbm IP
Replace asym_block_ram with util_do_ram IP
This IP replaces the ad_mem_asym module as storage element for the data
offload.
Having standard AXIS interface for data will allow
implementation of storages on UltraRAM.
This IP serves as storage interfacing element for external memories like
HBM or DDR4 which have AXI3 or AXI4 data interfaces.
The core leverages the axi_dmac as building blocks by merging an array of
simplex DMA channels into duplex AXI channels. The core will split the
incoming data from the source AXIS interface to multiple AXI channels,
and in the read phase will merge the multiple AXI channels into a single
AXIS destination interface.
The number of duplex channels is set by syntheses parameter and must be
set with the ratio of AXIS and AXI3/4 interface.
Underflow or Overflow conditions are reported back to the data offload
through the control/status interface.
In case multiple AXI channels are used the source and destination AXIS
interfaces widths must match.
This allows the external synchronization input to be driven from
asynchronous sources like a 1 PPS signal or just signals from different
clock domains in general.
Signed-off-by: David Winter <david.winter@analog.com>
Remove contraints related to quartus version so that
cn0506_mii and cn0506_rgmii on arria10 to be built
with default quartus version.
Signed-off-by: stefan.raus <stefan.raus@analog.com>
AndreiGrozav
Iulia Moldovan
Laszlo Nagy
Stanca Pop
sergiu arpadi
Filip Gherman
Mathias Tausen
Morten Jensen
Ionut Podgoreanu
PopPaul2021
David Winter
Adrian Costina
AndrDragomir
stefan.raus
Robin Getz
LIacob106
Nick Pillitteri