a9scu.hh revision 8282:0cc4594abf28
1/* 2 * Copyright (c) 2010 ARM Limited 3 * All rights reserved 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions are 16 * met: redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer; 18 * redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution; 21 * neither the name of the copyright holders nor the names of its 22 * contributors may be used to endorse or promote products derived from 23 * this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 * 37 * Authors: Ali Saidi 38 */ 39 40#ifndef __DEV_ARM_A9SCU_HH__ 41#define __DEV_ARM_A9SCU_HH__ 42 43#include "base/range.hh" 44#include "dev/io_device.hh" 45#include "params/A9SCU.hh" 46 47/** @file 48 * This defines the snoop control unit register on an A9 49 */ 50 51class A9SCU : public BasicPioDevice 52{ 53 protected: 54 enum { 55 Control = 0x00, 56 Config = 0x04, 57 }; 58 59 public: 60 typedef A9SCUParams Params; 61 62 /** 63 * The constructor for RealView just registers itself with the MMU. 64 * @param p params structure 65 */ 66 A9SCU(Params *p); 67 68 /** 69 * Handle a read to the device 70 * @param pkt The memory request. 71 * @param data Where to put the data. 72 */ 73 virtual Tick read(PacketPtr pkt); 74 75 /** 76 * All writes are panic. 77 * @param pkt The memory request. 78 * @param data the data 79 */ 80 virtual Tick write(PacketPtr pkt); 81}; 82 83 84#endif // __DEV_ARM_A9SCU_HH__ 85 86