baddev.hh revision 2630
110259SAndrew.Bardsley@arm.com/* 210259SAndrew.Bardsley@arm.com * Copyright (c) 2004-2005 The Regents of The University of Michigan 310259SAndrew.Bardsley@arm.com * All rights reserved. 410259SAndrew.Bardsley@arm.com * 510259SAndrew.Bardsley@arm.com * Redistribution and use in source and binary forms, with or without 610259SAndrew.Bardsley@arm.com * modification, are permitted provided that the following conditions are 710259SAndrew.Bardsley@arm.com * met: redistributions of source code must retain the above copyright 810259SAndrew.Bardsley@arm.com * notice, this list of conditions and the following disclaimer; 910259SAndrew.Bardsley@arm.com * redistributions in binary form must reproduce the above copyright 1010259SAndrew.Bardsley@arm.com * notice, this list of conditions and the following disclaimer in the 1110259SAndrew.Bardsley@arm.com * documentation and/or other materials provided with the distribution; 1210259SAndrew.Bardsley@arm.com * neither the name of the copyright holders nor the names of its 1310259SAndrew.Bardsley@arm.com * contributors may be used to endorse or promote products derived from 1410259SAndrew.Bardsley@arm.com * this software without specific prior written permission. 1510259SAndrew.Bardsley@arm.com * 1610259SAndrew.Bardsley@arm.com * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1710259SAndrew.Bardsley@arm.com * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1810259SAndrew.Bardsley@arm.com * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1910259SAndrew.Bardsley@arm.com * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2010259SAndrew.Bardsley@arm.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2110259SAndrew.Bardsley@arm.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2210259SAndrew.Bardsley@arm.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2310259SAndrew.Bardsley@arm.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2410259SAndrew.Bardsley@arm.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2510259SAndrew.Bardsley@arm.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2610259SAndrew.Bardsley@arm.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2710259SAndrew.Bardsley@arm.com */ 2810259SAndrew.Bardsley@arm.com 2910259SAndrew.Bardsley@arm.com/** @file 3010259SAndrew.Bardsley@arm.com * This devices just panics when touched. For example if you have a 3110259SAndrew.Bardsley@arm.com * kernel that touches the frame buffer which isn't allowed. 3210259SAndrew.Bardsley@arm.com */ 3310259SAndrew.Bardsley@arm.com 3410259SAndrew.Bardsley@arm.com#ifndef __DEV_BADDEV_HH__ 3510259SAndrew.Bardsley@arm.com#define __DEV_BADDEV_HH__ 3610259SAndrew.Bardsley@arm.com 3710259SAndrew.Bardsley@arm.com#include "base/range.hh" 3810259SAndrew.Bardsley@arm.com#include "dev/io_device.hh" 3910259SAndrew.Bardsley@arm.com 4010259SAndrew.Bardsley@arm.com 4110259SAndrew.Bardsley@arm.com/** 4210259SAndrew.Bardsley@arm.com * BadDevice 4310259SAndrew.Bardsley@arm.com * This device just panics when accessed. It is supposed to warn 4410259SAndrew.Bardsley@arm.com * the user that the kernel they are running has unsupported 4510259SAndrew.Bardsley@arm.com * options (i.e. frame buffer) 4610259SAndrew.Bardsley@arm.com */ 4710259SAndrew.Bardsley@arm.comclass BadDevice : public BasicPioDevice 4810259SAndrew.Bardsley@arm.com{ 4910259SAndrew.Bardsley@arm.com private: 5010259SAndrew.Bardsley@arm.com std::string devname; 5110259SAndrew.Bardsley@arm.com 5210259SAndrew.Bardsley@arm.com public: 5310259SAndrew.Bardsley@arm.com struct Params : public BasicPioDevice::Params 5410259SAndrew.Bardsley@arm.com { 5510259SAndrew.Bardsley@arm.com std::string device_name; 5610259SAndrew.Bardsley@arm.com }; 5710259SAndrew.Bardsley@arm.com protected: 5810259SAndrew.Bardsley@arm.com const Params *params() const { return (const Params *)_params; } 5910259SAndrew.Bardsley@arm.com 6010259SAndrew.Bardsley@arm.com public: 6110259SAndrew.Bardsley@arm.com /** 6210259SAndrew.Bardsley@arm.com * Constructor for the Baddev Class. 6310259SAndrew.Bardsley@arm.com * @param p object parameters 6410259SAndrew.Bardsley@arm.com * @param a base address of the write 6510259SAndrew.Bardsley@arm.com */ 6610259SAndrew.Bardsley@arm.com BadDevice(Params *p); 6710259SAndrew.Bardsley@arm.com 6810259SAndrew.Bardsley@arm.com virtual Tick read(Packet *pkt); 6910259SAndrew.Bardsley@arm.com virtual Tick write(Packet *pkt); 7010259SAndrew.Bardsley@arm.com}; 7110259SAndrew.Bardsley@arm.com 7210259SAndrew.Bardsley@arm.com#endif // __DEV_BADDEV_HH__ 7310259SAndrew.Bardsley@arm.com