buttercutter’s gists

buttercutter / Makefile

Last active February 27, 2019 04:58

Modified https://github.com/KastnerRG/riffa/blob/master/driver/linux/circ_queue.c using kernel built-in ptr_ring struct

	# ----------------------------------------------------------------------
	# Copyright (c) 2016, The Regents of the University of California 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.

buttercutter / circ_buf.h

Last active December 19, 2018 05:01

Modified https://github.com/KastnerRG/riffa/blob/master/driver/linux/circ_queue.h using kernel built-in circ_buf struct

	/*
	* Filename: circ_buf.h
	* Version: 1.0
	* Description: A circular buffer using API from
	* https://github.com/torvalds/linux/blob/master/Documentation/core-api/circular-buffers.rst
	*/

	#include <linux/circ_buf.h>

	// power-of-2 sized buffers

buttercutter / circ_buf.c

Last active December 19, 2018 05:01

Modified https://github.com/KastnerRG/riffa/blob/master/driver/linux/circ_queue.c using kernel built-in circ_buf struct

	/*
	* Filename: circ_buf.c
	* Version: 1.0
	* Description: A circular buffer using API from
	* https://github.com/torvalds/linux/blob/master/Documentation/core-api/circular-buffers.rst
	*/

	#include <linux/slab.h>
	#include <linux/circ_buf.h>
	#include "circ_buf.h"

buttercutter / predict.py

Last active December 23, 2018 12:54

Python inference code for pruned SqueezeNet model

	#Modified from https://github.com/amrit-das/Custom-Model-Training-PyTorch/blob/master/predict.py
	import torch
	import torch.nn as nn
	#from torchvision.models import resnet18
	from torchvision.transforms import transforms
	import matplotlib.pyplot as plt
	import numpy as np
	from torch.autograd import Variable
	import torch.functional as F
	from PIL import Image

buttercutter / Gm2.net

Last active December 2, 2018 06:15

Asymmetric differential transconductance amplifier for https://github.com/promach/frequency_trap/tree/development

	* Asymmetric differential transconductance amplifier

	.PARAM V_SUPPLY = 3.3
	.PARAM V_BIAS = 1.8
	*.PARAM INP_FREQ = '#INP_FREQ#'
	*.PARAM INP_PERIOD = '1/INP_FREQ'
	*.PARAM NO_PERIODS = '4'
	.PARAM TMEAS_START = '(NO_PERIODS-1)INP_PERIOD'
	.PARAM TMEAS_STOP = '(NO_PERIODS)INP_PERIOD'
	.PARAM AC_POINTS = 10

buttercutter / test_SPI.v

Last active December 5, 2018 01:32

SPI flash controller for Winbond W25Q32 flash

	module test_SPI(clk, rst, serial_in, serial_out, o_busy_n, rx_error_n, MISO, MOSI);

	parameter MOSI_DATA_BITWIDTH = 8 + 24 + 256*8; // to accomodate the maximum bit length for page_program(02h)
	parameter MISO_DATA_BITWIDTH = 8;

	localparam UART_LENGTH = 8; // 8N1 uart system
	localparam NUM_OF_MUX_BIT = 1;

	// hex ASCII code
	localparam START_CHARACTER = 'h7F; // del character

buttercutter / SPI.v

Last active November 13, 2018 01:21

SPI flash controller for Winbond W25Q32 flash

	module SPI(clk, reset, data_valid, data_MOSI, data_ready, data_MISO, MISO, MOSI, clk_flash, CS_flash);

	parameter MOSI_DATA_BITWIDTH = 8 + 24 + 256*8; // for page_program(02h)
	parameter MISO_DATA_BITWIDTH = 8;

	localparam INSTRUCTION_READ_DATA = 3; // Read Data (03h) instruction

	input clk, reset;

	input data_valid;

buttercutter / stap_riffa.log

Created October 15, 2018 12:00

systemtap log for riffa module not found

	phung@UbuntuHW15:~$ sudo stap -vvv linetimes.stp 'module("/lib/modules/4.18.6-041806-generic/kernel/drivers/riffa/riffa.ko")' push_circ_queue \| gist-paste
	Created temporary directory "/tmp/stap8yjk95"
	Session arch: x86_64 release: 4.18.6-041806-generic
	Parsed kernel "/lib/modules/4.18.6-041806-generic/build/.config", containing 7603 tuples
	Parsed kernel "/lib/modules/4.18.6-041806-generic/build/Module.symvers", containing 10232 vmlinux exports
	Kernel symbol table /lib/modules/4.18.6-041806-generic/build/System.map unavailable, (No such file or directory)
	Parsed kernel "/boot/System.map-4.18.6-041806-generic", containing 53806 symbols
	Processing tapset "/usr/local/share/systemtap/tapset/linux/context.stpm"
	Processing tapset "/usr/local/share/systemtap/tapset/linux/inet.stpm"
	Processing tapset "/usr/local/share/systemtap/tapset/linux/json.stpm"

buttercutter / riffa_reorder_queue.gtkw

Created September 19, 2018 06:35

	[*]
	[*] GTKWave Analyzer v3.3.86 (w)1999-2017 BSI
	[*] Thu Aug 23 07:56:44 2018
	[*]
	[dumpfile] "./riffa_reorder_queue.vcd"
	[dumpfile_mtime] "Thu Aug 2 04:32:15 2018"
	[dumpfile_size] 705110
	[savefile] "./riffa_reorder_queue.gtkw"
	[timestart] 0
	[size] 1920 1115

buttercutter / dmesg

Last active September 13, 2018 04:33

RIFFA dmesg for unexpected failed IRQ interrupt binding from USB3 controller hanging off PCI bus

	[ 0.000000] Linux version 4.18.6-041806-generic (kernel@kathleen) (gcc version 8.2.0 (Ubuntu 8.2.0-4ubuntu1)) #201809050847 SMP Wed Sep 5 08:49:36 UTC 2018
	[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.18.6-041806-generic root=UUID=904591e2-36d9-4436-b533-fbdd0d6abc90 ro quiet splash debug loglevel=7 vt.handoff=1
	[ 0.000000] KERNEL supported cpus:
	[ 0.000000] Intel GenuineIntel
	[ 0.000000] AMD AuthenticAMD
	[ 0.000000] Centaur CentaurHauls
	[ 0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
	[ 0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
	[ 0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
	[ 0.000000] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256

Phung Cheng Fei buttercutter