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/*
* Copyright (c) 2001-2003 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/* @file
* Simple disk interface for the system console
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <fcntl.h>
#include <unistd.h>
#include <cstring>
#include <string>
#include "base/misc.hh"
#include "base/trace.hh"
#include "dev/disk_image.hh"
#include "dev/simple_disk.hh"
#include "mem/functional/physical.hh"
#include "sim/builder.hh"
using namespace std;
SimpleDisk::SimpleDisk(const string &name, PhysicalMemory *pmem,
DiskImage *img)
: SimObject(name), physmem(pmem), image(img)
{}
SimpleDisk::~SimpleDisk()
{}
void
SimpleDisk::read(Addr addr, baddr_t block, int count) const
{
uint8_t *data = physmem->dma_addr(addr, count);
if (!data)
panic("dma out of range! read addr=%#x count=%d\n", addr, count);
if (count & (SectorSize - 1))
panic("Not reading a multiple of a sector (count = %d)", count);
for (int i = 0, j = 0; i < count; i += SectorSize, j++)
image->read(data + i, block + j);
DPRINTF(SimpleDisk, "read block=%#x len=%d\n", (uint64_t)block, count);
DDUMP(SimpleDiskData, data, count);
}
void
SimpleDisk::write(Addr addr, baddr_t block, int count)
{
panic("unimplemented!\n");
#if 0
uint8_t *data = physmem->dma_addr(addr, count);
if (!data)
panic("dma out of range! write addr=%#x count=%d\n", addr, count);
image->write(data, block, count);
#endif
}
BEGIN_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk)
SimObjectParam<PhysicalMemory *> physmem;
SimObjectParam<DiskImage *> disk;
END_DECLARE_SIM_OBJECT_PARAMS(SimpleDisk)
BEGIN_INIT_SIM_OBJECT_PARAMS(SimpleDisk)
INIT_PARAM(physmem, "Physical Memory"),
INIT_PARAM(disk, "Disk Image")
END_INIT_SIM_OBJECT_PARAMS(SimpleDisk)
CREATE_SIM_OBJECT(SimpleDisk)
{
return new SimpleDisk(getInstanceName(), physmem, disk);
}
REGISTER_SIM_OBJECT("SimpleDisk", SimpleDisk)
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