113 lines
3.4 KiB
C++
113 lines
3.4 KiB
C++
/*
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* Copyright (c) 2001-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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*/
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/* @file
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* Simple disk interface for the system console
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*/
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <cstring>
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#include <string>
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#include "base/misc.hh"
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#include "base/trace.hh"
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#include "dev/disk_image.hh"
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#include "dev/simple_disk.hh"
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#include "mem/port.hh"
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#include "sim/builder.hh"
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#include "sim/system.hh"
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using namespace std;
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SimpleDisk::SimpleDisk(const string &name, System *sys, DiskImage *img)
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: SimObject(name), system(sys), image(img)
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{}
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SimpleDisk::~SimpleDisk()
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{}
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void
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SimpleDisk::read(Addr addr, baddr_t block, int count) const
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{
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uint8_t *data = new uint8_t[SectorSize * count];
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if (count & (SectorSize - 1))
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panic("Not reading a multiple of a sector (count = %d)", count);
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for (int i = 0, j = 0; i < count; i += SectorSize, j++)
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image->read(data + i, block + j);
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system->functionalPort.writeBlob(addr, data, count);
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DPRINTF(SimpleDisk, "read block=%#x len=%d\n", (uint64_t)block, count);
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DDUMP(SimpleDiskData, data, count);
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delete data;
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}
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void
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SimpleDisk::write(Addr addr, baddr_t block, int count)
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{
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panic("unimplemented!\n");
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#if 0
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uint8_t *data = physmem->dma_addr(addr, count);
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if (!data)
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panic("dma out of range! write addr=%#x count=%d\n", addr, count);
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image->write(data, block, count);
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#endif
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}
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BEGIN_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk)
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SimObjectParam<System *> system;
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SimObjectParam<DiskImage *> disk;
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END_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk)
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BEGIN_INIT_SIM_OBJECT_PARAMS(SimpleDisk)
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INIT_PARAM(system, "System pointer"),
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INIT_PARAM(disk, "Disk Image")
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END_INIT_SIM_OBJECT_PARAMS(SimpleDisk)
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CREATE_SIM_OBJECT(SimpleDisk)
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{
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return new SimpleDisk(getInstanceName(), system, disk);
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}
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REGISTER_SIM_OBJECT("SimpleDisk", SimpleDisk)
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