operand_queues_stage — Instantiate the in-lane operand queues

Author: Matheus Cavalcante License: Solderpad Hardware License v0.51 Description: This module contains the operand queues used in Ara’s vector lanes. It manages operand buffering and dispatching to the appropriate functional units (VFUs) such as ALU, MFPU, STU, SLDU, and Mask Unit. Each operand queue is a parameterized instance of operand_queue.

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Module Parameters

Parameter	Type	Description
NrLanes	int unsigned	Number of vector lanes
VLEN	int unsigned	Vector length in bits
FPUSupport	fpu_support_e	FPU support configuration
operand_queue_cmd_t	type	Type used for operand queue commands

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Ports

Clock and Reset

Name	Direction	Type	Description
clk_i	Input	logic	Clock signal
rst_ni	Input	logic	Asynchronous active-low reset

Lane Identification

Name	Direction	Type	Description
lane_id_i	Input	logic[idx_width(NrLanes)-1:0]	Lane identifier

VRF Interface

Inputs from the Vector Register File.

Name	Direction	Type	Description
operand_i	Input	elen_t[NrOperandQueues-1:0]	Operands
operand_valid_i	Input	logic[NrOperandQueues-1:0]	Valid bits per operand

Operand Requester

Name	Direction	Type	Description
operand_issued_i	Input	logic[NrOperandQueues-1:0]	Which operands are issued
operand_queue_ready_o	Output	logic[NrOperandQueues-1:0]	Readiness flags for operands
operand_queue_cmd_i	Input	operand_queue_cmd_t[NrOperandQueues-1:0]	Operand queue commands
operand_queue_cmd_valid_i	Input	logic[NrOperandQueues-1:0]	Valid bits for queue commands

Store Exception Flush Support

Name	Direction	Type	Description
lsu_ex_flush_i	Input	logic	Flush input signal
lsu_ex_flush_o	Output	logic	Flush output signal

Lane Sequencer

Name	Direction	Type	Description
mask_b_cmd_pop_o	Output	logic	Command pop signal for mask B
sldu_addrgen_cmd_pop_o	Output	logic	Pop command for slide/address generation unit

Functional Units Outputs

Documentation continues with full elaboration of each operand_queue instance across VFUs (ALU, MFPU, STU, SLDU, Mask Unit), flushing behavior, and parameter checks…