simple_disk.cc revision 8994
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 "debug/SimpleDisk.hh" 46#include "debug/SimpleDiskData.hh" 47#include "dev/disk_image.hh" 48#include "dev/simple_disk.hh" 49#include "mem/port_proxy.hh" 50#include "sim/system.hh" 51 52using namespace std; 53 54SimpleDisk::SimpleDisk(const Params *p) 55 : SimObject(p), system(p->system), image(p->disk) 56{} 57 58SimpleDisk::~SimpleDisk() 59{} 60 61 62void 63SimpleDisk::read(Addr addr, baddr_t block, int count) const 64{ 65 uint8_t *data = new uint8_t[SectorSize * count]; 66 67 if (count & (SectorSize - 1)) 68 panic("Not reading a multiple of a sector (count = %d)", count); 69 70 for (int i = 0, j = 0; i < count; i += SectorSize, j++) 71 image->read(data + i, block + j); 72 73 system->physProxy.writeBlob(addr, data, count); 74 75 DPRINTF(SimpleDisk, "read block=%#x len=%d\n", (uint64_t)block, count); 76 DDUMP(SimpleDiskData, data, count); 77 78 delete [] data; 79} 80 81void 82SimpleDisk::write(Addr addr, baddr_t block, int count) 83{ 84 panic("unimplemented!\n"); 85 86#if 0 87 uint8_t *data = physmem->dma_addr(addr, count); 88 if (!data) 89 panic("dma out of range! write addr=%#x count=%d\n", addr, count); 90 91 image->write(data, block, count); 92#endif 93} 94 95SimpleDisk * 96SimpleDiskParams::create() 97{ 98 return new SimpleDisk(this); 99} 100