api

api/Buffer.h

@@ -0,0 +1,12 @@
+#ifndef BUFFER_H
+#define BUFFER_H
+
+#include <stdint.h>
+
+struct Buffer_t
+{
+  uint32_t size;
+  void* ptr;
+};
+
+#endif

api/SonoException.h

@@ -0,0 +1,22 @@
+#ifndef SONO_EXCEPTION_H
+#define SONO_EXCEPTION_H
+
+#include <exception>
+
+class SonoException : public std::exception 
+{
+private:
+    std::string _message;
+public:
+    explicit SonoException(const std::string& message)
+    {
+      _message = message;
+    }
+
+    const char* what() const noexcept override 
+    {
+        return _message.c_str();
+    }
+};
+
+#endif

api/SonoPcieDevice.cpp

@@ -0,0 +1,106 @@
+#include "SonoPcieDevice.h"
+
+#include <sys/mman.h>
+#include <fcntl.h>
+
+SonoPcieDevice::SonoPcieDevice()
+{
+  bars[0].size = 32 MB;
+  bars[1].size = 16 MB;
+  bars[2].size = 16 KB;
+
+  for(auto i = 0; i < TOTAL_DMA_BUFFER_NUM; i++)
+  {
+    dmaBuffers[i].size = DMA_SIZE;
+  }
+}
+
+void SonoPcieDevice::init()
+{
+  initBars();
+
+  initDmaBuffers();
+}
+
+void SonoPcieDevice::initBars()
+{
+  int fd = open("/proc/sono_bars", O_RDWR | O_SYNC);
+  if(fd == -1)
+  {
+    SonoException exp("Could not open bar proc file");
+    throw exp;
+  }
+
+  for(auto i = 0; i < TOTAL_BAR_NUM; i++)
+  {  
+    bars[i].ptr = mmap(0, bars[i].size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, i << 12); 
+  }
+}
+
+void SonoPcieDevice::initDmaBuffers()
+{
+  int fd = open("/proc/sono_buffers", O_RDWR | O_SYNC);
+  if(fd == -1)
+  {
+    SonoException exp("Could not open buffers proc file");
+    throw exp;
+  }
+
+  for(auto i = 0; i < TOTAL_DMA_BUFFER_NUM; i++)
+  {
+    dmaBuffers[i].ptr = mmap(0, dmaBuffers[i].size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, i << 12); 
+  }
+}
+
+  void SonoPcieDevice::writeByte(uint32_t bar, uint8_t data, uint32_t offset)
+  {
+    uint8_t* temp = (uint8_t*)bars[bar].ptr;
+    temp[offset] = data;
+  }
+
+  void SonoPcieDevice::writeShort(uint32_t bar, uint16_t data, uint32_t offset)
+  {
+    uint16_t* temp = (uint16_t*)bars[bar].ptr;
+    temp[offset / 2] = data;
+  }
+
+  void SonoPcieDevice::writeWord(uint32_t bar, uint32_t data, uint32_t offset)
+  {
+    uint32_t* temp = (uint32_t*)bars[bar].ptr;
+    temp[offset / 4] = data;
+  }
+
+  void SonoPcieDevice::writeLong(uint32_t bar, uint64_t data, uint32_t offset)
+  {
+    uint64_t* temp = (uint64_t*)bars[bar].ptr;
+    temp[offset / 8] = data;
+  }
+
+  uint8_t SonoPcieDevice::readByte(uint32_t bar, uint32_t offset)
+  {
+    uint8_t* temp = (uint8_t*)bars[bar].ptr;
+    return temp[offset];
+  }
+
+  uint16_t SonoPcieDevice::readShort(uint32_t bar, uint32_t offset)
+  {
+    uint16_t* temp = (uint16_t*)bars[bar].ptr;
+    return temp[offset / 2];
+  }
+
+  uint32_t SonoPcieDevice::readWord(uint32_t bar, uint32_t offset)
+  {
+    uint32_t* temp = (uint32_t*)bars[bar].ptr;
+    return temp[offset / 4];
+  }
+
+  uint64_t SonoPcieDevice::readLong(uint32_t bar, uint32_t offset)
+  {
+    uint64_t* temp = (uint64_t*)bars[bar].ptr;
+    return temp[offset / 8];
+  }
+
+  uint8_t* SonoPcieDevice::getBufferPtr(uint32_t buffer)
+  {
+    return (uint8_t*)dmaBuffers[buffer].ptr;
+  }

api/SonoPcieDevice.h

@@ -0,0 +1,42 @@
+#ifndef SONOPCIEDEVICE_H
+#define SONOPCIEDEVICE_H
+
+#include <iostream>
+
+#include "SonoException.h"
+#include "Buffer.h"
+
+#define KB                    * 1024
+#define MB                    KB KB
+#define TOTAL_BAR_NUM         3
+#define TOTAL_DMA_BUFFER_NUM  16
+#define DMA_SIZE              4 MB
+
+class SonoPcieDevice
+{
+private:
+ Buffer_t bars[TOTAL_BAR_NUM];
+ Buffer_t dmaBuffers[TOTAL_DMA_BUFFER_NUM];
+
+ void initBars();
+ void initDmaBuffers();
+
+public:
+  SonoPcieDevice();
+  
+  void init();
+
+  void writeByte(uint32_t bar, uint8_t data, uint32_t offset);
+  void writeShort(uint32_t bar, uint16_t data, uint32_t offset);
+  void writeWord(uint32_t bar, uint32_t data, uint32_t offset);
+  void writeLong(uint32_t bar, uint64_t data, uint32_t offset);
+
+  uint8_t readByte(uint32_t bar, uint32_t offset);
+  uint16_t readShort(uint32_t bar, uint32_t offset);
+  uint32_t readWord(uint32_t bar, uint32_t offset);
+  uint64_t readLong(uint32_t bar, uint32_t offset);
+
+  uint8_t* getBufferPtr(uint32_t buffer);
+};
+
+#endif

app/Test/.gitignore

@@ -0,0 +1,73 @@
+# This file is used to ignore files which are generated
+# ----------------------------------------------------------------------------
+
+*~
+*.autosave
+*.a
+*.core
+*.moc
+*.o
+*.obj
+*.orig
+*.rej
+*.so
+*.so.*
+*_pch.h.cpp
+*_resource.rc
+*.qm
+.#*
+*.*#
+core
+!core/
+tags
+.DS_Store
+.directory
+*.debug
+Makefile*
+*.prl
+*.app
+moc_*.cpp
+ui_*.h
+qrc_*.cpp
+Thumbs.db
+*.res
+*.rc
+/.qmake.cache
+/.qmake.stash
+
+# qtcreator generated files
+*.pro.user*
+
+# xemacs temporary files
+*.flc
+
+# Vim temporary files
+.*.swp
+
+# Visual Studio generated files
+*.ib_pdb_index
+*.idb
+*.ilk
+*.pdb
+*.sln
+*.suo
+*.vcproj
+*vcproj.*.*.user
+*.ncb
+*.sdf
+*.opensdf
+*.vcxproj
+*vcxproj.*
+
+# MinGW generated files
+*.Debug
+*.Release
+
+# Python byte code
+*.pyc
+
+# Binaries
+# --------
+*.dll
+*.exe
+

app/Test/MainWindow.cpp

@@ -0,0 +1,15 @@
+#include "MainWindow.h"
+#include "ui_MainWindow.h"
+
+MainWindow::MainWindow(QWidget *parent)
+	: QMainWindow(parent)
+	, ui(new Ui::MainWindow)
+{
+	ui->setupUi(this);
+}
+
+MainWindow::~MainWindow()
+{
+	delete ui;
+}
+

app/Test/MainWindow.h

@@ -0,0 +1,21 @@
+#ifndef MAINWINDOW_H
+#define MAINWINDOW_H
+
+#include <QMainWindow>
+
+QT_BEGIN_NAMESPACE
+namespace Ui { class MainWindow; }
+QT_END_NAMESPACE
+
+class MainWindow : public QMainWindow
+{
+	Q_OBJECT
+
+public:
+	MainWindow(QWidget *parent = nullptr);
+	~MainWindow();
+
+private:
+	Ui::MainWindow *ui;
+};
+#endif // MAINWINDOW_H

app/Test/MainWindow.ui

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>800</width>
+    <height>600</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>MainWindow</string>
+  </property>
+  <widget class="QWidget" name="centralwidget"/>
+  <widget class="QMenuBar" name="menubar"/>
+  <widget class="QStatusBar" name="statusbar"/>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

app/Test/Test.pro

@@ -0,0 +1,31 @@
+QT       += core gui
+
+greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
+
+CONFIG += c++11
+
+# The following define makes your compiler emit warnings if you use
+# any Qt feature that has been marked deprecated (the exact warnings
+# depend on your compiler). Please consult the documentation of the
+# deprecated API in order to know how to port your code away from it.
+DEFINES += QT_DEPRECATED_WARNINGS
+
+# You can also make your code fail to compile if it uses deprecated APIs.
+# In order to do so, uncomment the following line.
+# You can also select to disable deprecated APIs only up to a certain version of Qt.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+SOURCES += \
+    main.cpp \
+    MainWindow.cpp
+
+HEADERS += \
+    MainWindow.h
+
+FORMS += \
+    MainWindow.ui
+
+# Default rules for deployment.
+qnx: target.path = /tmp/$${TARGET}/bin
+else: unix:!android: target.path = /opt/$${TARGET}/bin
+!isEmpty(target.path): INSTALLS += target

app/Test/main.cpp

@@ -0,0 +1,11 @@
+#include "MainWindow.h"
+
+#include <QApplication>
+
+int main(int argc, char *argv[])
+{
+	QApplication a(argc, argv);
+	MainWindow w;
+	w.show();
+	return a.exec();
+}