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Diffstat (limited to 'dev/tsunami_io.cc')
-rw-r--r-- | dev/tsunami_io.cc | 719 |
1 files changed, 0 insertions, 719 deletions
diff --git a/dev/tsunami_io.cc b/dev/tsunami_io.cc deleted file mode 100644 index e66d6653b..000000000 --- a/dev/tsunami_io.cc +++ /dev/null @@ -1,719 +0,0 @@ -/* - * 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. - */ - -/** @file - * Tsunami I/O including PIC, PIT, RTC, DMA - */ - -#include <sys/time.h> - -#include <deque> -#include <string> -#include <vector> - -#include "base/trace.hh" -#include "dev/tsunami_io.hh" -#include "dev/tsunami.hh" -#include "dev/pitreg.h" -#include "mem/bus/bus.hh" -#include "mem/bus/pio_interface.hh" -#include "mem/bus/pio_interface_impl.hh" -#include "sim/builder.hh" -#include "dev/tsunami_cchip.hh" -#include "dev/tsunamireg.h" -#include "dev/rtcreg.h" -#include "mem/functional/memory_control.hh" - -using namespace std; -//Should this be AlphaISA? -using namespace TheISA; - -TsunamiIO::RTC::RTC(const string &name, Tsunami* t, Tick i) - : _name(name), event(t, i), addr(0) -{ - memset(clock_data, 0, sizeof(clock_data)); - stat_regA = RTCA_32768HZ | RTCA_1024HZ; - stat_regB = RTCB_PRDC_IE |RTCB_BIN | RTCB_24HR; -} - -void -TsunamiIO::RTC::set_time(time_t t) -{ - struct tm tm; - gmtime_r(&t, &tm); - - sec = tm.tm_sec; - min = tm.tm_min; - hour = tm.tm_hour; - wday = tm.tm_wday + 1; - mday = tm.tm_mday; - mon = tm.tm_mon + 1; - year = tm.tm_year; - - DPRINTFN("Real-time clock set to %s", asctime(&tm)); -} - -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; - } - } -} - -void -TsunamiIO::RTC::readData(uint8_t *data) -{ - if (addr < RTC_STAT_REGA) - *data = clock_data[addr]; - else { - switch (addr) { - case RTC_STAT_REGA: - // toggle UIP bit for linux - stat_regA ^= RTCA_UIP; - *data = stat_regA; - break; - case RTC_STAT_REGB: - *data = stat_regB; - break; - case RTC_STAT_REGC: - case RTC_STAT_REGD: - *data = 0x00; - break; - } - } -} - -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 §ion) -{ - 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() -{ - return "tsunami RTC interrupt"; -} - -TsunamiIO::PITimer::PITimer(const string &name) - : _name(name), counter0(name + ".counter0"), counter1(name + ".counter1"), - counter2(name + ".counter2") -{ - counter[0] = &counter0; - counter[1] = &counter0; - counter[2] = &counter0; -} - -void -TsunamiIO::PITimer::writeControl(const uint8_t *data) -{ - int rw; - int sel; - - sel = GET_CTRL_SEL(*data); - - if (sel == PIT_READ_BACK) - panic("PITimer Read-Back Command is not implemented.\n"); - - rw = GET_CTRL_RW(*data); - - if (rw == PIT_RW_LATCH_COMMAND) - counter[sel]->latchCount(); - else { - counter[sel]->setRW(rw); - counter[sel]->setMode(GET_CTRL_MODE(*data)); - counter[sel]->setBCD(GET_CTRL_BCD(*data)); - } -} - -void -TsunamiIO::PITimer::serialize(const string &base, ostream &os) -{ - // serialize the counters - counter0.serialize(base + ".counter0", os); - counter1.serialize(base + ".counter1", os); - counter2.serialize(base + ".counter2", os); -} - -void -TsunamiIO::PITimer::unserialize(const string &base, Checkpoint *cp, - const string §ion) -{ - // unserialze the counters - counter0.unserialize(base + ".counter0", cp, section); - counter1.unserialize(base + ".counter1", cp, section); - counter2.unserialize(base + ".counter2", cp, section); -} - -TsunamiIO::PITimer::Counter::Counter(const string &name) - : _name(name), event(this), count(0), latched_count(0), period(0), - mode(0), output_high(false), latch_on(false), read_byte(LSB), - write_byte(LSB) -{ - -} - -void -TsunamiIO::PITimer::Counter::latchCount() -{ - // behave like a real latch - if(!latch_on) { - latch_on = true; - read_byte = LSB; - latched_count = count; - } -} - -void -TsunamiIO::PITimer::Counter::read(uint8_t *data) -{ - if (latch_on) { - switch (read_byte) { - case LSB: - read_byte = MSB; - *data = (uint8_t)latched_count; - break; - case MSB: - read_byte = LSB; - latch_on = false; - *data = latched_count >> 8; - break; - } - } else { - switch (read_byte) { - case LSB: - read_byte = MSB; - *data = (uint8_t)count; - break; - case MSB: - read_byte = LSB; - *data = count >> 8; - break; - } - } -} - -void -TsunamiIO::PITimer::Counter::write(const uint8_t *data) -{ - switch (write_byte) { - case LSB: - count = (count & 0xFF00) | *data; - - if (event.scheduled()) - event.deschedule(); - output_high = false; - write_byte = MSB; - break; - - case MSB: - count = (count & 0x00FF) | (*data << 8); - period = count; - - if (period > 0) { - DPRINTF(Tsunami, "Timer set to curTick + %d\n", - count * event.interval); - event.schedule(curTick + count * event.interval); - } - write_byte = LSB; - break; - } -} - -void -TsunamiIO::PITimer::Counter::setRW(int rw_val) -{ - if (rw_val != PIT_RW_16BIT) - panic("Only LSB/MSB read/write is implemented.\n"); -} - -void -TsunamiIO::PITimer::Counter::setMode(int mode_val) -{ - if(mode_val != PIT_MODE_INTTC && mode_val != PIT_MODE_RATEGEN && - mode_val != PIT_MODE_SQWAVE) - panic("PIT mode %#x is not implemented: \n", mode_val); - - mode = mode_val; -} - -void -TsunamiIO::PITimer::Counter::setBCD(int bcd_val) -{ - if (bcd_val != PIT_BCD_FALSE) - panic("PITimer does not implement BCD counts.\n"); -} - -bool -TsunamiIO::PITimer::Counter::outputHigh() -{ - return output_high; -} - -void -TsunamiIO::PITimer::Counter::serialize(const string &base, ostream &os) -{ - paramOut(os, base + ".count", count); - paramOut(os, base + ".latched_count", latched_count); - paramOut(os, base + ".period", period); - paramOut(os, base + ".mode", mode); - paramOut(os, base + ".output_high", output_high); - paramOut(os, base + ".latch_on", latch_on); - paramOut(os, base + ".read_byte", read_byte); - paramOut(os, base + ".write_byte", write_byte); - - Tick event_tick = 0; - if (event.scheduled()) - event_tick = event.when(); - paramOut(os, base + ".event_tick", event_tick); -} - -void -TsunamiIO::PITimer::Counter::unserialize(const string &base, Checkpoint *cp, - const string §ion) -{ - paramIn(cp, section, base + ".count", count); - paramIn(cp, section, base + ".latched_count", latched_count); - paramIn(cp, section, base + ".period", period); - paramIn(cp, section, base + ".mode", mode); - paramIn(cp, section, base + ".output_high", output_high); - paramIn(cp, section, base + ".latch_on", latch_on); - paramIn(cp, section, base + ".read_byte", read_byte); - paramIn(cp, section, base + ".write_byte", write_byte); - - Tick event_tick; - paramIn(cp, section, base + ".event_tick", event_tick); - if (event_tick) - event.schedule(event_tick); -} - -TsunamiIO::PITimer::Counter::CounterEvent::CounterEvent(Counter* c_ptr) - : Event(&mainEventQueue) -{ - interval = (Tick)(Clock::Float::s / 1193180.0); - counter = c_ptr; -} - -void -TsunamiIO::PITimer::Counter::CounterEvent::process() -{ - DPRINTF(Tsunami, "Timer Interrupt\n"); - switch (counter->mode) { - case PIT_MODE_INTTC: - counter->output_high = true; - case PIT_MODE_RATEGEN: - case PIT_MODE_SQWAVE: - break; - default: - panic("Unimplemented PITimer mode.\n"); - } -} - -const char * -TsunamiIO::PITimer::Counter::CounterEvent::description() -{ - return "tsunami 8254 Interval timer"; -} - -TsunamiIO::TsunamiIO(const string &name, Tsunami *t, time_t init_time, - Addr a, MemoryController *mmu, HierParams *hier, - Bus *pio_bus, Tick pio_latency, Tick ci) - : PioDevice(name, t), addr(a), clockInterval(ci), tsunami(t), - pitimer(name + "pitimer"), rtc(name + ".rtc", t, ci) -{ - mmu->add_child(this, RangeSize(addr, size)); - - if (pio_bus) { - pioInterface = newPioInterface(name + ".pio", hier, pio_bus, this, - &TsunamiIO::cacheAccess); - pioInterface->addAddrRange(RangeSize(addr, size)); - pioLatency = pio_latency * pio_bus->clockRate; - } - - // set the back pointer from tsunami to myself - tsunami->io = this; - - timerData = 0; - rtc.set_time(init_time == 0 ? time(NULL) : init_time); - picr = 0; - picInterrupting = false; -} - -Tick -TsunamiIO::frequency() const -{ - return Clock::Frequency / clockInterval; -} - -Fault -TsunamiIO::read(MemReqPtr &req, uint8_t *data) -{ - DPRINTF(Tsunami, "io read va=%#x size=%d IOPorrt=%#x\n", - req->vaddr, req->size, req->vaddr & 0xfff); - - Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask)); - - - switch(req->size) { - case sizeof(uint8_t): - switch(daddr) { - // PIC1 mask read - case TSDEV_PIC1_MASK: - *(uint8_t*)data = ~mask1; - return NoFault; - case TSDEV_PIC2_MASK: - *(uint8_t*)data = ~mask2; - return NoFault; - 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 - *(uint8_t*)data = picr; - return NoFault; - case TSDEV_PIC2_ISR: - // PIC2 not implemnted... just return 0 - *(uint8_t*)data = 0x00; - return NoFault; - case TSDEV_TMR0_DATA: - pitimer.counter0.read(data); - return NoFault; - case TSDEV_TMR1_DATA: - pitimer.counter1.read(data); - return NoFault; - case TSDEV_TMR2_DATA: - pitimer.counter2.read(data); - return NoFault; - case TSDEV_RTC_DATA: - rtc.readData(data); - return NoFault; - case TSDEV_CTRL_PORTB: - if (pitimer.counter2.outputHigh()) - *data = PORTB_SPKR_HIGH; - else - *data = 0x00; - return NoFault; - default: - panic("I/O Read - va%#x size %d\n", req->vaddr, req->size); - } - case sizeof(uint16_t): - case sizeof(uint32_t): - panic("I/O Read - invalid size - va %#x size %d\n", - req->vaddr, req->size); - - case sizeof(uint64_t): - switch(daddr) { - case TSDEV_PIC1_ISR: - // !!! If this is modified 8bit case needs to be too - // Pal code has to do a 64 bit physical read because there is - // no load physical byte instruction - *(uint64_t*)data = (uint64_t)picr; - return NoFault; - default: - panic("I/O Read - invalid size - va %#x size %d\n", - req->vaddr, req->size); - } - - default: - panic("I/O Read - invalid size - va %#x size %d\n", - req->vaddr, req->size); - } - panic("I/O Read - va%#x size %d\n", req->vaddr, req->size); - - return NoFault; -} - -Fault -TsunamiIO::write(MemReqPtr &req, const uint8_t *data) -{ - -#if TRACING_ON - uint8_t dt = *(uint8_t*)data; - uint64_t dt64 = dt; -#endif - - DPRINTF(Tsunami, "io write - va=%#x size=%d IOPort=%#x Data=%#x\n", - req->vaddr, req->size, req->vaddr & 0xfff, dt64); - - Addr daddr = (req->paddr - (addr & EV5::PAddrImplMask)); - - switch(req->size) { - case sizeof(uint8_t): - switch(daddr) { - case TSDEV_PIC1_MASK: - mask1 = ~(*(uint8_t*)data); - 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"); - } - return NoFault; - case TSDEV_PIC2_MASK: - mask2 = *(uint8_t*)data; - //PIC2 Not implemented to interrupt - return NoFault; - case TSDEV_PIC1_ACK: - // clear the interrupt on the PIC - picr &= ~(1 << (*(uint8_t*)data & 0xF)); - if (!(picr & mask1)) - tsunami->cchip->clearDRIR(55); - return NoFault; - case TSDEV_DMA1_CMND: - return NoFault; - case TSDEV_DMA2_CMND: - return NoFault; - case TSDEV_DMA1_MMASK: - return NoFault; - case TSDEV_DMA2_MMASK: - return NoFault; - case TSDEV_PIC2_ACK: - return NoFault; - case TSDEV_DMA1_RESET: - return NoFault; - case TSDEV_DMA2_RESET: - return NoFault; - case TSDEV_DMA1_MODE: - mode1 = *(uint8_t*)data; - return NoFault; - case TSDEV_DMA2_MODE: - mode2 = *(uint8_t*)data; - return NoFault; - case TSDEV_DMA1_MASK: - case TSDEV_DMA2_MASK: - return NoFault; - case TSDEV_TMR0_DATA: - pitimer.counter0.write(data); - return NoFault; - case TSDEV_TMR1_DATA: - pitimer.counter1.write(data); - return NoFault; - case TSDEV_TMR2_DATA: - pitimer.counter2.write(data); - return NoFault; - case TSDEV_TMR_CTRL: - pitimer.writeControl(data); - return NoFault; - case TSDEV_RTC_ADDR: - rtc.writeAddr(data); - return NoFault; - case TSDEV_KBD: - return NoFault; - case TSDEV_RTC_DATA: - rtc.writeData(data); - return NoFault; - case TSDEV_CTRL_PORTB: - // System Control Port B not implemented - return NoFault; - default: - panic("I/O Write - va%#x size %d data %#x\n", req->vaddr, req->size, (int)*data); - } - case sizeof(uint16_t): - case sizeof(uint32_t): - case sizeof(uint64_t): - default: - panic("I/O Write - invalid size - va %#x size %d\n", - req->vaddr, req->size); - } - - - return NoFault; -} - -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"); - } -} - -Tick -TsunamiIO::cacheAccess(MemReqPtr &req) -{ - return curTick + pioLatency; -} - -void -TsunamiIO::serialize(ostream &os) -{ - 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", os); - rtc.serialize("rtc", os); -} - -void -TsunamiIO::unserialize(Checkpoint *cp, const string §ion) -{ - 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, section); - rtc.unserialize("rtc", cp, section); -} - -BEGIN_DECLARE_SIM_OBJECT_PARAMS(TsunamiIO) - - SimObjectParam<Tsunami *> tsunami; - Param<time_t> time; - SimObjectParam<MemoryController *> mmu; - Param<Addr> addr; - SimObjectParam<Bus*> pio_bus; - Param<Tick> pio_latency; - SimObjectParam<HierParams *> hier; - Param<Tick> frequency; - -END_DECLARE_SIM_OBJECT_PARAMS(TsunamiIO) - -BEGIN_INIT_SIM_OBJECT_PARAMS(TsunamiIO) - - INIT_PARAM(tsunami, "Tsunami"), - INIT_PARAM(time, "System time to use (0 for actual time"), - INIT_PARAM(mmu, "Memory Controller"), - INIT_PARAM(addr, "Device Address"), - INIT_PARAM(pio_bus, "The IO Bus to attach to"), - INIT_PARAM_DFLT(pio_latency, "Programmed IO latency in bus cycles", 1), - INIT_PARAM_DFLT(hier, "Hierarchy global variables", &defaultHierParams), - INIT_PARAM(frequency, "clock interrupt frequency") - -END_INIT_SIM_OBJECT_PARAMS(TsunamiIO) - -CREATE_SIM_OBJECT(TsunamiIO) -{ - return new TsunamiIO(getInstanceName(), tsunami, time, addr, mmu, hier, - pio_bus, pio_latency, frequency); -} - -REGISTER_SIM_OBJECT("TsunamiIO", TsunamiIO) |