300 lines
8.7 KiB
C++
300 lines
8.7 KiB
C++
/*
|
|
* Copyright (c) 2004-2005 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.
|
|
*
|
|
* Authors: Ali Saidi
|
|
* Andrew Schultz
|
|
* Miguel Serrano
|
|
*/
|
|
|
|
/** @file
|
|
* Tsunami I/O including PIC, PIT, RTC, DMA
|
|
*/
|
|
|
|
#include "dev/alpha/tsunami_io.hh"
|
|
|
|
#include <sys/time.h>
|
|
|
|
#include <deque>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "base/time.hh"
|
|
#include "base/trace.hh"
|
|
#include "config/the_isa.hh"
|
|
#include "debug/Tsunami.hh"
|
|
#include "dev/alpha/tsunami.hh"
|
|
#include "dev/alpha/tsunami_cchip.hh"
|
|
#include "dev/alpha/tsunamireg.h"
|
|
#include "dev/rtcreg.h"
|
|
#include "mem/packet.hh"
|
|
#include "mem/packet_access.hh"
|
|
#include "mem/port.hh"
|
|
#include "sim/system.hh"
|
|
|
|
// clang complains about std::set being overloaded with Packet::set if
|
|
// we open up the entire namespace std
|
|
using std::string;
|
|
using std::ostream;
|
|
|
|
//Should this be AlphaISA?
|
|
using namespace TheISA;
|
|
|
|
TsunamiIO::RTC::RTC(const string &n, const TsunamiIOParams *p)
|
|
: MC146818(p->tsunami, n, p->time, p->year_is_bcd, p->frequency),
|
|
tsunami(p->tsunami)
|
|
{
|
|
}
|
|
|
|
TsunamiIO::TsunamiIO(const Params *p)
|
|
: BasicPioDevice(p, 0x100), tsunami(p->tsunami),
|
|
pitimer(this, p->name + "pitimer"), rtc(p->name + ".rtc", p)
|
|
{
|
|
// set the back pointer from tsunami to myself
|
|
tsunami->io = this;
|
|
|
|
timerData = 0;
|
|
picr = 0;
|
|
picInterrupting = false;
|
|
}
|
|
|
|
Tick
|
|
TsunamiIO::frequency() const
|
|
{
|
|
return SimClock::Frequency / params()->frequency;
|
|
}
|
|
|
|
Tick
|
|
TsunamiIO::read(PacketPtr pkt)
|
|
{
|
|
assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
|
|
|
|
Addr daddr = pkt->getAddr() - pioAddr;
|
|
|
|
DPRINTF(Tsunami, "io read va=%#x size=%d IOPorrt=%#x\n", pkt->getAddr(),
|
|
pkt->getSize(), daddr);
|
|
|
|
if (pkt->getSize() == sizeof(uint8_t)) {
|
|
switch(daddr) {
|
|
// PIC1 mask read
|
|
case TSDEV_PIC1_MASK:
|
|
pkt->set(~mask1);
|
|
break;
|
|
case TSDEV_PIC2_MASK:
|
|
pkt->set(~mask2);
|
|
break;
|
|
case TSDEV_PIC1_ISR:
|
|
// !!! If this is modified 64bit case needs to be too
|
|
// Pal code has to do a 64 bit physical read because there is
|
|
// no load physical byte instruction
|
|
pkt->set(picr);
|
|
break;
|
|
case TSDEV_PIC2_ISR:
|
|
// PIC2 not implemnted... just return 0
|
|
pkt->set(0x00);
|
|
break;
|
|
case TSDEV_TMR0_DATA:
|
|
pkt->set(pitimer.readCounter(0));
|
|
break;
|
|
case TSDEV_TMR1_DATA:
|
|
pkt->set(pitimer.readCounter(1));
|
|
break;
|
|
case TSDEV_TMR2_DATA:
|
|
pkt->set(pitimer.readCounter(2));
|
|
break;
|
|
case TSDEV_RTC_DATA:
|
|
pkt->set(rtc.readData(rtcAddr));
|
|
break;
|
|
case TSDEV_CTRL_PORTB:
|
|
if (pitimer.outputHigh(2))
|
|
pkt->set(PORTB_SPKR_HIGH);
|
|
else
|
|
pkt->set(0x00);
|
|
break;
|
|
default:
|
|
panic("I/O Read - va%#x size %d\n", pkt->getAddr(), pkt->getSize());
|
|
}
|
|
} else if (pkt->getSize() == sizeof(uint64_t)) {
|
|
if (daddr == TSDEV_PIC1_ISR)
|
|
pkt->set<uint64_t>(picr);
|
|
else
|
|
panic("I/O Read - invalid addr - va %#x size %d\n",
|
|
pkt->getAddr(), pkt->getSize());
|
|
} else {
|
|
panic("I/O Read - invalid size - va %#x size %d\n", pkt->getAddr(), pkt->getSize());
|
|
}
|
|
pkt->makeAtomicResponse();
|
|
return pioDelay;
|
|
}
|
|
|
|
Tick
|
|
TsunamiIO::write(PacketPtr pkt)
|
|
{
|
|
assert(pkt->getAddr() >= pioAddr && pkt->getAddr() < pioAddr + pioSize);
|
|
Addr daddr = pkt->getAddr() - pioAddr;
|
|
|
|
DPRINTF(Tsunami, "io write - va=%#x size=%d IOPort=%#x Data=%#x\n",
|
|
pkt->getAddr(), pkt->getSize(), pkt->getAddr() & 0xfff, (uint32_t)pkt->get<uint8_t>());
|
|
|
|
assert(pkt->getSize() == sizeof(uint8_t));
|
|
|
|
switch(daddr) {
|
|
case TSDEV_PIC1_MASK:
|
|
mask1 = ~(pkt->get<uint8_t>());
|
|
if ((picr & mask1) && !picInterrupting) {
|
|
picInterrupting = true;
|
|
tsunami->cchip->postDRIR(55);
|
|
DPRINTF(Tsunami, "posting pic interrupt to cchip\n");
|
|
}
|
|
if ((!(picr & mask1)) && picInterrupting) {
|
|
picInterrupting = false;
|
|
tsunami->cchip->clearDRIR(55);
|
|
DPRINTF(Tsunami, "clearing pic interrupt\n");
|
|
}
|
|
break;
|
|
case TSDEV_PIC2_MASK:
|
|
mask2 = pkt->get<uint8_t>();
|
|
//PIC2 Not implemented to interrupt
|
|
break;
|
|
case TSDEV_PIC1_ACK:
|
|
// clear the interrupt on the PIC
|
|
picr &= ~(1 << (pkt->get<uint8_t>() & 0xF));
|
|
if (!(picr & mask1))
|
|
tsunami->cchip->clearDRIR(55);
|
|
break;
|
|
case TSDEV_DMA1_MODE:
|
|
mode1 = pkt->get<uint8_t>();
|
|
break;
|
|
case TSDEV_DMA2_MODE:
|
|
mode2 = pkt->get<uint8_t>();
|
|
break;
|
|
case TSDEV_TMR0_DATA:
|
|
pitimer.writeCounter(0, pkt->get<uint8_t>());
|
|
break;
|
|
case TSDEV_TMR1_DATA:
|
|
pitimer.writeCounter(1, pkt->get<uint8_t>());
|
|
break;
|
|
case TSDEV_TMR2_DATA:
|
|
pitimer.writeCounter(2, pkt->get<uint8_t>());
|
|
break;
|
|
case TSDEV_TMR_CTRL:
|
|
pitimer.writeControl(pkt->get<uint8_t>());
|
|
break;
|
|
case TSDEV_RTC_ADDR:
|
|
rtcAddr = pkt->get<uint8_t>();
|
|
break;
|
|
case TSDEV_RTC_DATA:
|
|
rtc.writeData(rtcAddr, pkt->get<uint8_t>());
|
|
break;
|
|
case TSDEV_KBD:
|
|
case TSDEV_DMA1_CMND:
|
|
case TSDEV_DMA2_CMND:
|
|
case TSDEV_DMA1_MMASK:
|
|
case TSDEV_DMA2_MMASK:
|
|
case TSDEV_PIC2_ACK:
|
|
case TSDEV_DMA1_RESET:
|
|
case TSDEV_DMA2_RESET:
|
|
case TSDEV_DMA1_MASK:
|
|
case TSDEV_DMA2_MASK:
|
|
case TSDEV_CTRL_PORTB:
|
|
break;
|
|
default:
|
|
panic("I/O Write - va%#x size %d data %#x\n", pkt->getAddr(), pkt->getSize(), pkt->get<uint8_t>());
|
|
}
|
|
|
|
pkt->makeAtomicResponse();
|
|
return pioDelay;
|
|
}
|
|
|
|
void
|
|
TsunamiIO::postPIC(uint8_t bitvector)
|
|
{
|
|
//PIC2 Is not implemented, because nothing of interest there
|
|
picr |= bitvector;
|
|
if (picr & mask1) {
|
|
tsunami->cchip->postDRIR(55);
|
|
DPRINTF(Tsunami, "posting pic interrupt to cchip\n");
|
|
}
|
|
}
|
|
|
|
void
|
|
TsunamiIO::clearPIC(uint8_t bitvector)
|
|
{
|
|
//PIC2 Is not implemented, because nothing of interest there
|
|
picr &= ~bitvector;
|
|
if (!(picr & mask1)) {
|
|
tsunami->cchip->clearDRIR(55);
|
|
DPRINTF(Tsunami, "clearing pic interrupt to cchip\n");
|
|
}
|
|
}
|
|
|
|
void
|
|
TsunamiIO::serialize(CheckpointOut &cp) const
|
|
{
|
|
SERIALIZE_SCALAR(rtcAddr);
|
|
SERIALIZE_SCALAR(timerData);
|
|
SERIALIZE_SCALAR(mask1);
|
|
SERIALIZE_SCALAR(mask2);
|
|
SERIALIZE_SCALAR(mode1);
|
|
SERIALIZE_SCALAR(mode2);
|
|
SERIALIZE_SCALAR(picr);
|
|
SERIALIZE_SCALAR(picInterrupting);
|
|
|
|
// Serialize the timers
|
|
pitimer.serialize("pitimer", cp);
|
|
rtc.serialize("rtc", cp);
|
|
}
|
|
|
|
void
|
|
TsunamiIO::unserialize(CheckpointIn &cp)
|
|
{
|
|
UNSERIALIZE_SCALAR(rtcAddr);
|
|
UNSERIALIZE_SCALAR(timerData);
|
|
UNSERIALIZE_SCALAR(mask1);
|
|
UNSERIALIZE_SCALAR(mask2);
|
|
UNSERIALIZE_SCALAR(mode1);
|
|
UNSERIALIZE_SCALAR(mode2);
|
|
UNSERIALIZE_SCALAR(picr);
|
|
UNSERIALIZE_SCALAR(picInterrupting);
|
|
|
|
// Unserialize the timers
|
|
pitimer.unserialize("pitimer", cp);
|
|
rtc.unserialize("rtc", cp);
|
|
}
|
|
|
|
void
|
|
TsunamiIO::startup()
|
|
{
|
|
rtc.startup();
|
|
pitimer.startup();
|
|
}
|
|
|
|
TsunamiIO *
|
|
TsunamiIOParams::create()
|
|
{
|
|
return new TsunamiIO(this);
|
|
}
|