simple_disk.cc revision 2522
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 29/* @file 30 * Simple disk interface for the system console 31 */ 32 33#include <sys/types.h> 34#include <sys/uio.h> 35#include <fcntl.h> 36#include <unistd.h> 37 38#include <cstring> 39#include <string> 40 41#include "base/misc.hh" 42#include "base/trace.hh" 43#include "dev/disk_image.hh" 44#include "dev/simple_disk.hh" 45#include "mem/port.hh" 46#include "sim/builder.hh" 47#include "sim/system.hh" 48 49using namespace std; 50 51SimpleDisk::SimpleDisk(const string &name, System *sys, DiskImage *img) 52 : SimObject(name), system(sys), image(img) 53{} 54 55SimpleDisk::~SimpleDisk() 56{} 57 58 59void 60SimpleDisk::read(Addr addr, baddr_t block, int count) const 61{ 62 uint8_t *data = new uint8_t[SectorSize * count]; 63 64 if (count & (SectorSize - 1)) 65 panic("Not reading a multiple of a sector (count = %d)", count); 66 67 for (int i = 0, j = 0; i < count; i += SectorSize, j++) 68 image->read(data + i, block + j); 69 70 system->functionalPort.writeBlob(addr, data, count); 71 72 DPRINTF(SimpleDisk, "read block=%#x len=%d\n", (uint64_t)block, count); 73 DDUMP(SimpleDiskData, data, count); 74 75 delete data; 76} 77 78void 79SimpleDisk::write(Addr addr, baddr_t block, int count) 80{ 81 panic("unimplemented!\n"); 82 83#if 0 84 uint8_t *data = physmem->dma_addr(addr, count); 85 if (!data) 86 panic("dma out of range! write addr=%#x count=%d\n", addr, count); 87 88 image->write(data, block, count); 89#endif 90} 91 92BEGIN_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk) 93 94 SimObjectParam<System *> system; 95 SimObjectParam<DiskImage *> disk; 96 97END_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk) 98 99BEGIN_INIT_SIM_OBJECT_PARAMS(SimpleDisk) 100 101 INIT_PARAM(system, "System pointer"), 102 INIT_PARAM(disk, "Disk Image") 103 104END_INIT_SIM_OBJECT_PARAMS(SimpleDisk) 105 106CREATE_SIM_OBJECT(SimpleDisk) 107{ 108 return new SimpleDisk(getInstanceName(), system, disk); 109} 110 111REGISTER_SIM_OBJECT("SimpleDisk", SimpleDisk) 112