iron.dataflow.tile_dma.Bd Class Reference

Collaboration diagram for iron.dataflow.tile_dma.Bd:

Static Public Attributes
Buffer	buffer
int	offset = 0
int	length = None
list	acquires = field(default_factory=list)
list	releases = field(default_factory=list)
int	next = "self"
tuple	packet = None
list	dimensions = None

Detailed Description

A single buffer-descriptor entry in a :class:`DmaChannel`'s chain.

Lowers to one basic block containing acquires + ``aie.dma_bd`` +
releases + an ``aie.next_bd``.  The ``next`` field selects what the
``next_bd`` points at:

* ``"self"`` (default) — the BD loops to itself (the common "keep
  streaming" pattern).
* an ``int`` ``i`` — point at the i-th BD in this channel's ``bds``
  list (zero-based).  Useful for explicit cycles in a multi-BD chain.
* ``None`` — emit no ``next_bd`` (rarely useful; this leaves the
  basic block without a terminator).

Member Data Documentation

acquires

list iron.dataflow.tile_dma.Bd.acquires = field(default_factory=list)

static

buffer

Buffer iron.dataflow.tile_dma.Bd.buffer

static

dimensions

list iron.dataflow.tile_dma.Bd.dimensions = None

static

length

int iron.dataflow.tile_dma.Bd.length = None

static

next

int iron.dataflow.tile_dma.Bd.next = "self"

static

offset

int iron.dataflow.tile_dma.Bd.offset = 0

static

packet

tuple iron.dataflow.tile_dma.Bd.packet = None

static

releases

list iron.dataflow.tile_dma.Bd.releases = field(default_factory=list)

static

---

The documentation for this class was generated from the following file:

• iron/dataflow/tile_dma.py