baddev.hh revision 802
12SN/A/* 21762SN/A * Copyright (c) 2003 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu */ 284123Sbinkertn@umich.edu 292SN/A/* @file 302SN/A * This devices just panics when touched. For example if you have a 314123Sbinkertn@umich.edu * kernel that touches the frame buffer which isn't allowed. 324128Sbinkertn@umich.edu */ 332655Sstever@eecs.umich.edu 344123Sbinkertn@umich.edu#ifndef __BADDEV_HH__ 354123Sbinkertn@umich.edu#define __BADDEV_HH__ 362SN/A 374123Sbinkertn@umich.edu#include "mem/functional_mem/mmap_device.hh" 38146SN/A 393356Sbinkertn@umich.edu/** 403868Sbinkertn@umich.edu * BadDevice 41146SN/A * This device just panics when accessed. It is supposed to warn 42146SN/A * the user that the kernel they are running has unsupported 434167Sbinkertn@umich.edu * options (i.e. frame buffer) 442SN/A */ 452SN/Aclass BadDevice : public MmapDevice 462SN/A{ 472SN/A private: 482SN/A 492SN/A std::string devname; 502SN/A protected: 512SN/A 524123Sbinkertn@umich.edu public: 532SN/A /** 542SN/A * The default constructor. 55329SN/A */ 56329SN/A BadDevice(const std::string &name, Addr addr, Addr mask, 57329SN/A MemoryController *mmu, const std::string &devicename); 58329SN/A 594123Sbinkertn@umich.edu virtual Fault read(MemReqPtr &req, uint8_t *data); 604123Sbinkertn@umich.edu virtual Fault write(MemReqPtr &req, const uint8_t *data); 61329SN/A 62329SN/A 632SN/A}; 642SN/A 652SN/A#endif // __BADDEV_HH__ 662SN/A