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//
// Copyright 2021 Ettus Research, A National Instruments Brand
//
// SPDX-License-Identifier: LGPL-3.0-or-later
//
// Package: PkgAxi
// Description:
// AXI4 is an ARM standard for memory mapped burst transfers
// For more information on the spec see
// - https://developer.arm.com/docs/ihi0022/d
//
// This package contains types used for AxiIf.
//
//-----------------------------------------------------------------------------
// AXI4 Package
//-----------------------------------------------------------------------------
package PkgAxi;
typedef enum logic [1:0] {OKAY=0,SLVERR=2,DECERR=3} axi_resp_t;
// Len - Burst Length = LEN+1
// Size - Bytes in transfer = 2**SIZE
typedef enum logic [1:0] {FIXED=0,INCR=1,WRAP=2} axi_burst_t;
// Cache - just see the docs. (too tangled!)
// Prot[0] - Privleged
// Prot[1] - Secure
// Prot[2] - 0=Data / 1=Instruction
// QOS - 0 = no protocol - Others not specified in spec
endpackage : PkgAxi
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