Bundle the TLAST signal in with the other AXIS slave signals to enable
easier connection between AXIS devices that use TLAST
Signed-off-by: Matt Fornero <matt.fornero@mathworks.com>
Add some limit TLAST support for the streaming AXI source interface. An
asserted TLAST signal marks the end of a packet and the following data beat
is the first beat for the next packet.
Currently the DMAC does not support for completing a transfer before all
requested bytes have been transferred. So the way this limited TLAST
support is implemented is by filling the remainder of the buffer with 0x00.
While the DMAC is busy filling the buffer with zeros back-pressure is
asserted on the external streaming AXI interface by keeping TREADY
de-asserted.
The end of a buffer is marked by a transfer that has the last bit set in
the FLAGS control register.
In the future we might add support for transfer completion before all
requested bytes have been transferred.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Commit ff50963c7f ("axi_ad9361- altera/xilinx reconcile- may be broken-
do not use") inverted the polarity of the TX feedback clock.
This exposed some issues in the existing drivers which can cause the
interface tuning to fail randomly under certain conditions.
To keep backwards compatibility with existing drivers restore the previous
behavior.
A separate fix will be applied to the drivers that resolves the issue that
has been exposed by the polarity inversion. So that interface calibration
works reliably under all conditions.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Assigning the value of a local parameter(localparam) to a parameter
will end up with a conflict(not highlighted by the tool). In this
case, the parameter type was defined as a string instead of an
integer. Furthermore, this scenario leads to an undesired choice
between primitive types.
The dma_last_beats is used by the Avalon Memory Mapped interface
controller, to define the last burst length.
Its value get stable after the last valid data of the DMA interface, and staying
stable until the positive edge of the DMA's xfer_req.
No need to condition the transfer of this register to avalon clock
domain.
The XFER_END state defines the end of a transaction, when the entire
data set is written or read to/from the DDRx memory.
A transaction can contain multiple Avalon bursts. Make sure that the FSM
goes back into staging phase at the end of each burst; also define a
signals which indicate the end of each burst for control.
The period_count should be updated once per clock cycle. This is not
enforced with the current implementation, which probably leads to
period_count being decremented on both m_axis_aclk edges.
A problem observed due to this is that the m_axis_tlast output is not
asserted or is asserted for a too short time for the consumer to
detect it.
Fix by letting the decrement (and thus the m_axis_tlast toggling)
happen only on the rising edge of the m_axis_aclk clock.
Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
The commit 6900c have added an additional register stage into the fifo read
data path, but the control signals (ready/valid/underflow) were not realigned
to the data. This can cause data lose or duplicated samples in some case.
Realign the control signals to the data.
Make sure that the axi_adxcvr instances are configured with the same
transceiver type as the util_adxcvr.
This is necessary for software to be able to detect the transceiver type
and support dynamic reconfiguration.
It is also necessary for correct eye scan support in the axi_adxcvr block.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Make sure that the axi_adxcvr instances are configured with the same
transceiver type as the util_adxcvr.
This is necessary for software to be able to detect the transceiver type
and support dynamic reconfiguration.
It is also necessary for correct eye scan support in the axi_adxcvr block.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The util_adxcvr supports GTX2, GTH3 and GTH4. The transceiver is selected
using the XCVR_TYPE parameter.
The axi_adxcvr on the other hand only has a configuration parameter to
indicate whether a GTX or GTH transceiver is used (GTH_OR_GTX_N). Since
there are some minor differences between GTH3 and GTH4 that software needs
to know about rename the GTH_OR_GTX_N to XCVR_TYPE and match use the same
semantics as util_adxcvr.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Fix the location assignment of the transceiver blocks to get the correct
lane mapping.
Note that the comments indicating the expected lane mapping are correct,
but the actual transceiver location assignments were not.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The external reference clock runs at 122.88 MHz by default. This means that
the QPLL feedback divider needs to be set to 80 so that the VCO is inside
the locking range (9.8 GHz - 16.375 GHz).
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
DAC data underflow from the DMA, was not connected to anything. This
signal should be connected to the util_rfifo, which will forward it to
the device core.
The dac_xfer_req should indicate one single thing, that the FIFO is in
read phase. Should not be affected by any signals, which indicates data
validity on any interface. (e.g. dac_valid)
This signal is not used by the device core, its main purpose is to
indicate the state of the interface for a posible intermediat processing
module.
Fix the reset of the dma_mem_waddr (write address register of the CDC
FIFO on DMA's clock domain). This solves the occasional invalid read backs after
multiple re-initialization of the PL_DDR_FIFO.
+ Build both the read and write logic around an FSM
+ Consistent naming of registers and wires
+ Add support for burst lenghts higher than one, current burst lenght
is 64
+ Fix all the bugs, and make it work (first bring up with
adrv9371x/a10soc)
Istvan Csomortani
Matt Fornero
Lars-Peter Clausen
AndreiGrozav
Michael Hennerich
Luca Ceresoli
Adrian Costina