Commit Graph

7 Commits (3d1ffe7bd29ac2b1de5ec7bf4a93a0e58f346f4b)

Author SHA1 Message Date
Lars-Peter Clausen aa594e15f3 axi_dmac: fifo_inf: Handle overflow and underflow correctly
Refactor the fifo_inf modules to always correctly generate the underflow and
overflow status signals. Before it was possible that in some cases they
were not generated when they should have been.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
2015-02-19 17:22:21 +01:00
Lars-Peter Clausen de0edc2083 axi_dmac: src_fifo_inf: Clear pipeline when no transfers are active
Clear the pipeline when no transfers are active to make sure that we do not
get residual data on the first sample for the next transfer.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
2014-09-16 21:02:05 +02:00
Lars-Peter Clausen 8a2b29cdbe axi_damc: Add xfer_req to the FIFO source interface
The xfer_req signal will be high if DMA core the is expecting data.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
2014-07-02 16:05:16 +02:00
Lars-Peter Clausen cb630e36a9 axi_dmac: src_fifo_inf: Simplify data path
Improves timing a bit

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
2014-04-10 13:50:39 +02:00
Lars-Peter Clausen e373b85954 axi_dmac: Fix Vivado warnings
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
2014-03-18 20:59:13 +01:00
Lars-Peter Clausen f02ba999ae axi_dmac: Add support for DMA bus widths other than 64 bit
There were a few place in the core where it assumed a 64-bit wide bus. Make this
configurable using parameters. The patch also adds support for having different
DMA bus widths on the source and destination side.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
2014-03-13 13:20:10 +01:00
Adrian Costina 831c19ea84 Added axi_dmac, axi_fifo and misc files in library 2014-03-06 18:16:02 +02:00