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Diffstat (limited to 'fpga/usrp3/lib/vivado_ipi/axi_dmac/inc_id.h')
| -rw-r--r-- | fpga/usrp3/lib/vivado_ipi/axi_dmac/inc_id.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/fpga/usrp3/lib/vivado_ipi/axi_dmac/inc_id.h b/fpga/usrp3/lib/vivado_ipi/axi_dmac/inc_id.h new file mode 100644 index 000000000..0aaebde0d --- /dev/null +++ b/fpga/usrp3/lib/vivado_ipi/axi_dmac/inc_id.h @@ -0,0 +1,67 @@ +// *************************************************************************** +// *************************************************************************** +// Copyright 2013(c) Analog Devices, Inc. +// +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without modification, +// are permitted provided that the following conditions are met: +// - Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// - Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in +// the documentation and/or other materials provided with the +// distribution. +// - Neither the name of Analog Devices, Inc. nor the names of its +// contributors may be used to endorse or promote products derived +// from this software without specific prior written permission. +// - The use of this software may or may not infringe the patent rights +// of one or more patent holders. This license does not release you +// from the requirement that you obtain separate licenses from these +// patent holders to use this software. +// - Use of the software either in source or binary form, must be run +// on or directly connected to an Analog Devices Inc. component. +// +// THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, +// INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A +// PARTICULAR PURPOSE ARE DISCLAIMED. +// +// IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, INTELLECTUAL PROPERTY +// RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR +// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF +// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// *************************************************************************** +// *************************************************************************** + +function [ID_WIDTH-1:0] g2b; + input [ID_WIDTH-1:0] g; + reg [ID_WIDTH-1:0] b; + integer i; + begin + b[ID_WIDTH-1] = g[ID_WIDTH-1]; + for (i = ID_WIDTH - 2; i >= 0; i = i - 1) + b[i] = b[i + 1] ^ g[i]; + g2b = b; + end +endfunction + +function [ID_WIDTH-1:0] b2g; + input [ID_WIDTH-1:0] b; + reg [ID_WIDTH-1:0] g; + integer i; + begin + g[ID_WIDTH-1] = b[ID_WIDTH-1]; + for (i = ID_WIDTH - 2; i >= 0; i = i -1) + g[i] = b[i + 1] ^ b[i]; + b2g = g; + end +endfunction + +function [ID_WIDTH:0] inc_id; +input [ID_WIDTH:0] id; +begin + inc_id = b2g(g2b(id) + 1); +end +endfunction |