simple_disk.cc revision 2665
1/* 2 * Copyright (c) 2001-2005 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; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 */ 30 31/* @file 32 * Simple disk interface for the system console 33 */ 34 35#include <sys/types.h> 36#include <sys/uio.h> 37#include <fcntl.h> 38#include <unistd.h> 39 40#include <cstring> 41#include <string> 42 43#include "base/misc.hh" 44#include "base/trace.hh" 45#include "dev/disk_image.hh" 46#include "dev/simple_disk.hh" 47#include "mem/port.hh" 48#include "sim/builder.hh" 49#include "sim/system.hh" 50 51using namespace std; 52 53SimpleDisk::SimpleDisk(const string &name, System *sys, DiskImage *img) 54 : SimObject(name), system(sys), image(img) 55{} 56 57SimpleDisk::~SimpleDisk() 58{} 59 60 61void 62SimpleDisk::read(Addr addr, baddr_t block, int count) const 63{ 64 uint8_t *data = new uint8_t[SectorSize * count]; 65 66 if (count & (SectorSize - 1)) 67 panic("Not reading a multiple of a sector (count = %d)", count); 68 69 for (int i = 0, j = 0; i < count; i += SectorSize, j++) 70 image->read(data + i, block + j); 71 72 system->functionalPort.writeBlob(addr, data, count); 73 74 DPRINTF(SimpleDisk, "read block=%#x len=%d\n", (uint64_t)block, count); 75 DDUMP(SimpleDiskData, data, count); 76 77 delete data; 78} 79 80void 81SimpleDisk::write(Addr addr, baddr_t block, int count) 82{ 83 panic("unimplemented!\n"); 84 85#if 0 86 uint8_t *data = physmem->dma_addr(addr, count); 87 if (!data) 88 panic("dma out of range! write addr=%#x count=%d\n", addr, count); 89 90 image->write(data, block, count); 91#endif 92} 93 94BEGIN_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk) 95 96 SimObjectParam<System *> system; 97 SimObjectParam<DiskImage *> disk; 98 99END_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk) 100 101BEGIN_INIT_SIM_OBJECT_PARAMS(SimpleDisk) 102 103 INIT_PARAM(system, "System pointer"), 104 INIT_PARAM(disk, "Disk Image") 105 106END_INIT_SIM_OBJECT_PARAMS(SimpleDisk) 107 108CREATE_SIM_OBJECT(SimpleDisk) 109{ 110 return new SimpleDisk(getInstanceName(), system, disk); 111} 112 113REGISTER_SIM_OBJECT("SimpleDisk", SimpleDisk) 114