1/* 2 * Copyright (c) 2004-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; --- 23 unchanged lines hidden (view full) --- 32#ifndef __DEV_IO_DEVICE_HH__ 33#define __DEV_IO_DEVICE_HH__ 34 35#include "base/chunk_generator.hh" 36#include "mem/mem_object.hh" 37#include "mem/packet_impl.hh" 38#include "sim/eventq.hh" 39#include "sim/sim_object.hh" |
40#include "mem/tport.hh" |
41 42class Platform; 43class PioDevice; 44class DmaDevice; 45class System; 46 47/** 48 * The PioPort class is a programmed i/o port that all devices that are 49 * sensitive to an address range use. The port takes all the memory 50 * access types and roles them into one read() and write() call that the device 51 * must respond to. The device must also provide the addressRanges() function |
52 * with which it returns the address ranges it is interested in. */ 53 54class PioPort : public SimpleTimingPort |
55{ 56 protected: 57 /** The device that this port serves. */ 58 PioDevice *device; 59 60 /** The system that device/port are in. This is used to select which mode 61 * we are currently operating in. */ 62 System *sys; 63 |
64 /** The current status of the peer(bus) that we are connected to. */ 65 Status peerStatus; 66 67 virtual bool recvTiming(Packet *pkt); 68 69 virtual Tick recvAtomic(Packet *pkt); 70 71 virtual void recvFunctional(Packet *pkt) ; 72 73 virtual void recvStatusChange(Status status) 74 { peerStatus = status; } 75 76 virtual void getDeviceAddressRanges(AddrRangeList &resp, AddrRangeList &snoop); 77 |
78 public: 79 PioPort(PioDevice *dev, System *s, std::string pname = "-pioport"); 80 |
81}; 82 83 84class DmaPort : public Port 85{ 86 protected: 87 struct DmaReqState : public Packet::SenderState 88 { --- 219 unchanged lines hidden --- |