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hw: Add Multicast capabilities #123

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@fischeti fischeti commented Apr 9, 2025

Collective communication: Multicast

Adds multicast and basic reduction capabilities to FlooNoC. This PR supersedes #116

TODO:

  • Add original authors to PR commit message
  • Upstream modified bender dependencies (axi, idma)
  • Generalize ReduceMask
  • Maybe deprecate virtual channels in standard router

@fischeti fischeti force-pushed the fischeti/new-mcast branch 2 times, most recently from 961ba7f to a58146a Compare April 9, 2025 15:53
@fischeti fischeti force-pushed the fischeti/new-mcast branch from a58146a to a196bfb Compare April 9, 2025 15:53
@Lore0599 Lore0599 force-pushed the fischeti/new-mcast branch from 966e2c9 to bbbdc57 Compare April 25, 2025 08:06
@@ -29,6 +30,8 @@ module floo_nw_chimney #(
/// Every atomic transactions needs to have a unique ID
/// and one ID is reserved for non-atomic transactions
parameter int unsigned MaxAtomicTxns = 1,
// TODO(fischeti): Move to RouteCfg

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What do you mean with the TODO comment? @fischeti

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I would put the EnMultiCast parameter into the RouteCfg structure that is passed

@Lore0599 Lore0599 force-pushed the fischeti/new-mcast branch from 78942e9 to 9552ac5 Compare April 29, 2025 09:05
@Lore0599 Lore0599 force-pushed the fischeti/new-mcast branch from 9552ac5 to 457eb0b Compare April 29, 2025 09:21
// Solderpad Hardware License, Version 0.51, see LICENSE for details.
// SPDX-License-Identifier: SHL-0.51
//
// Author: Tim Fischer <[email protected]>
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@fischeti Do we really need this module? I think is not used anywhere, can I remove it?

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It was intended for the reduction in the router, but you can also remove it

// Solderpad Hardware License, Version 0.51, see LICENSE for details.
// SPDX-License-Identifier: SHL-0.51
//
// Author: Chen Wu <[email protected]>
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This module is not used anymore since the logic has now be merged in the floo_id_translation. Can I remove it?

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Yes, definitely

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We are not using anymore the routre_comp module. This oculd be removed as well.

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jep

@Lore0599 Lore0599 force-pushed the fischeti/new-mcast branch from 47ae340 to 8f8ef29 Compare May 9, 2025 13:48
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