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-rw-r--r--src/dev/alpha/tsunami_io.cc162
1 files changed, 8 insertions, 154 deletions
diff --git a/src/dev/alpha/tsunami_io.cc b/src/dev/alpha/tsunami_io.cc
index 710aca48d..88999ecc5 100644
--- a/src/dev/alpha/tsunami_io.cc
+++ b/src/dev/alpha/tsunami_io.cc
@@ -57,157 +57,9 @@ using namespace std;
//Should this be AlphaISA?
using namespace TheISA;
-TsunamiIO::RTC::RTC(const string &n, Tsunami* tsunami,
- const TsunamiIO::Params *p)
- : _name(n), event(tsunami, p->frequency), addr(0)
+TsunamiIO::TsunamiRTC::TsunamiRTC(const string &n, const TsunamiIOParams *p) :
+ MC146818(n, p->time, p->year_is_bcd, p->frequency), tsunami(p->tsunami)
{
- memset(clock_data, 0, sizeof(clock_data));
- stat_regA = RTCA_32768HZ | RTCA_1024HZ;
- stat_regB = RTCB_PRDC_IE |RTCB_BIN | RTCB_24HR;
-
- year = p->time.tm_year;
-
- if (p->year_is_bcd) {
- // The datasheet says that the year field can be either BCD or
- // years since 1900. Linux seems to be happy with years since
- // 1900.
- year = year % 100;
- int tens = year / 10;
- int ones = year % 10;
- year = (tens << 4) + ones;
- }
-
- // Unix is 0-11 for month, data seet says start at 1
- mon = p->time.tm_mon + 1;
- mday = p->time.tm_mday;
- hour = p->time.tm_hour;
- min = p->time.tm_min;
- sec = p->time.tm_sec;
-
- // Datasheet says 1 is sunday
- wday = p->time.tm_wday + 1;
-
- DPRINTFN("Real-time clock set to %s", asctime(&p->time));
-}
-
-void
-TsunamiIO::RTC::writeAddr(const uint8_t data)
-{
- if (data <= RTC_STAT_REGD)
- addr = data;
- else
- panic("RTC addresses over 0xD are not implemented.\n");
-}
-
-void
-TsunamiIO::RTC::writeData(const uint8_t data)
-{
- if (addr < RTC_STAT_REGA)
- clock_data[addr] = data;
- else {
- switch (addr) {
- case RTC_STAT_REGA:
- if (data != (RTCA_32768HZ | RTCA_1024HZ))
- panic("Unimplemented RTC register A value write!\n");
- stat_regA = data;
- break;
- case RTC_STAT_REGB:
- if ((data & ~(RTCB_PRDC_IE | RTCB_SQWE)) != (RTCB_BIN | RTCB_24HR))
- panic("Write to RTC reg B bits that are not implemented!\n");
-
- if (data & RTCB_PRDC_IE) {
- if (!event.scheduled())
- event.scheduleIntr();
- } else {
- if (event.scheduled())
- event.deschedule();
- }
- stat_regB = data;
- break;
- case RTC_STAT_REGC:
- case RTC_STAT_REGD:
- panic("RTC status registers C and D are not implemented.\n");
- break;
- }
- }
-}
-
-uint8_t
-TsunamiIO::RTC::readData()
-{
- if (addr < RTC_STAT_REGA)
- return clock_data[addr];
- else {
- switch (addr) {
- case RTC_STAT_REGA:
- // toggle UIP bit for linux
- stat_regA ^= RTCA_UIP;
- return stat_regA;
- break;
- case RTC_STAT_REGB:
- return stat_regB;
- break;
- case RTC_STAT_REGC:
- case RTC_STAT_REGD:
- return 0x00;
- break;
- default:
- panic("Shouldn't be here");
- }
- }
-}
-
-void
-TsunamiIO::RTC::serialize(const string &base, ostream &os)
-{
- paramOut(os, base + ".addr", addr);
- arrayParamOut(os, base + ".clock_data", clock_data, sizeof(clock_data));
- paramOut(os, base + ".stat_regA", stat_regA);
- paramOut(os, base + ".stat_regB", stat_regB);
-}
-
-void
-TsunamiIO::RTC::unserialize(const string &base, Checkpoint *cp,
- const string &section)
-{
- paramIn(cp, section, base + ".addr", addr);
- arrayParamIn(cp, section, base + ".clock_data", clock_data,
- sizeof(clock_data));
- paramIn(cp, section, base + ".stat_regA", stat_regA);
- paramIn(cp, section, base + ".stat_regB", stat_regB);
-
- // We're not unserializing the event here, but we need to
- // rescehedule the event since curTick was moved forward by the
- // checkpoint
- event.reschedule(curTick + event.interval);
-}
-
-TsunamiIO::RTC::RTCEvent::RTCEvent(Tsunami*t, Tick i)
- : Event(&mainEventQueue), tsunami(t), interval(i)
-{
- DPRINTF(MC146818, "RTC Event Initilizing\n");
- schedule(curTick + interval);
-}
-
-void
-TsunamiIO::RTC::RTCEvent::scheduleIntr()
-{
- schedule(curTick + interval);
-}
-
-void
-TsunamiIO::RTC::RTCEvent::process()
-{
- DPRINTF(MC146818, "RTC Timer Interrupt\n");
- schedule(curTick + interval);
- //Actually interrupt the processor here
- tsunami->cchip->postRTC();
-}
-
-const char *
-TsunamiIO::RTC::RTCEvent::description() const
-{
- return "tsunami RTC interrupt";
}
TsunamiIO::PITimer::PITimer(const string &name)
@@ -436,7 +288,7 @@ TsunamiIO::PITimer::Counter::CounterEvent::description() const
TsunamiIO::TsunamiIO(const Params *p)
: BasicPioDevice(p), tsunami(p->tsunami), pitimer(p->name + "pitimer"),
- rtc(p->name + ".rtc", p->tsunami, p)
+ rtc(p->name + ".rtc", p)
{
pioSize = 0x100;
@@ -495,7 +347,7 @@ TsunamiIO::read(PacketPtr pkt)
pkt->set(pitimer.counter2.read());
break;
case TSDEV_RTC_DATA:
- pkt->set(rtc.readData());
+ pkt->set(rtc.readData(rtcAddr));
break;
case TSDEV_CTRL_PORTB:
if (pitimer.counter2.outputHigh())
@@ -573,10 +425,10 @@ TsunamiIO::write(PacketPtr pkt)
pitimer.writeControl(pkt->get<uint8_t>());
break;
case TSDEV_RTC_ADDR:
- rtc.writeAddr(pkt->get<uint8_t>());
+ rtcAddr = pkt->get<uint8_t>();
break;
case TSDEV_RTC_DATA:
- rtc.writeData(pkt->get<uint8_t>());
+ rtc.writeData(rtcAddr, pkt->get<uint8_t>());
break;
case TSDEV_KBD:
case TSDEV_DMA1_CMND:
@@ -623,6 +475,7 @@ TsunamiIO::clearPIC(uint8_t bitvector)
void
TsunamiIO::serialize(ostream &os)
{
+ SERIALIZE_SCALAR(rtcAddr);
SERIALIZE_SCALAR(timerData);
SERIALIZE_SCALAR(mask1);
SERIALIZE_SCALAR(mask2);
@@ -639,6 +492,7 @@ TsunamiIO::serialize(ostream &os)
void
TsunamiIO::unserialize(Checkpoint *cp, const string &section)
{
+ UNSERIALIZE_SCALAR(rtcAddr);
UNSERIALIZE_SCALAR(timerData);
UNSERIALIZE_SCALAR(mask1);
UNSERIALIZE_SCALAR(mask2);