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-rw-r--r--src/arch/sparc/interrupts.hh41
-rw-r--r--src/arch/sparc/miscregfile.cc2
-rw-r--r--src/arch/sparc/miscregfile.hh18
-rw-r--r--src/arch/sparc/ua2005.cc183
4 files changed, 136 insertions, 108 deletions
diff --git a/src/arch/sparc/interrupts.hh b/src/arch/sparc/interrupts.hh
index 70838d1ce..452164e46 100644
--- a/src/arch/sparc/interrupts.hh
+++ b/src/arch/sparc/interrupts.hh
@@ -32,51 +32,62 @@
#define __ARCH_SPARC_INTERRUPT_HH__
#include "arch/sparc/faults.hh"
+#include "cpu/thread_context.hh"
+
namespace SparcISA
{
class Interrupts
{
protected:
- Fault interrupts[NumInterruptLevels];
- bool requested[NumInterruptLevels];
+
public:
Interrupts()
{
- for(int x = 0; x < NumInterruptLevels; x++)
- {
- interrupts[x] = new InterruptLevelN(x);
- requested[x] = false;
- }
+
}
void post(int int_num, int index)
{
- if(int_num < 0 || int_num >= NumInterruptLevels)
- panic("int_num out of bounds\n");
- requested[int_num] = true;
}
void clear(int int_num, int index)
{
- requested[int_num] = false;
+
}
void clear_all()
{
- for(int x = 0; x < NumInterruptLevels; x++)
- requested[x] = false;
+
}
bool check_interrupts(ThreadContext * tc) const
{
- return true;
+ // so far only handle softint interrupts
+ int int_level = InterruptLevel(tc->readMiscReg(MISCREG_SOFTINT));
+ if (int_level)
+ return true;
+ else
+ return false;
}
Fault getInterrupt(ThreadContext * tc)
{
- return NoFault;
+ // conditioning the softint interrups
+ if (tc->readMiscReg(MISCREG_HPSTATE) & hpriv) {
+ // if running in privileged mode, then pend the interrupt
+ return NoFault;
+ } else {
+ int int_level = InterruptLevel(tc->readMiscReg(MISCREG_SOFTINT));
+ if ((int_level <= tc->readMiscReg(MISCREG_PIL)) ||
+ !(tc->readMiscReg(MISCREG_PSTATE) & ie)) {
+ // if PIL or no interrupt enabled, then pend the interrupt
+ return NoFault;
+ } else {
+ return new InterruptLevelN(int_level);
+ }
+ }
}
void updateIntrInfo(ThreadContext * tc)
diff --git a/src/arch/sparc/miscregfile.cc b/src/arch/sparc/miscregfile.cc
index 48abad32a..fd20a14c1 100644
--- a/src/arch/sparc/miscregfile.cc
+++ b/src/arch/sparc/miscregfile.cc
@@ -372,7 +372,7 @@ void MiscRegFile::setReg(int miscReg, const MiscReg &val)
gsr = val;
break;
case MISCREG_SOFTINT:
- softint = val;
+ softint |= val;
break;
case MISCREG_TICK_CMPR:
tick_cmpr = val;
diff --git a/src/arch/sparc/miscregfile.hh b/src/arch/sparc/miscregfile.hh
index 3b8a977cc..d09005795 100644
--- a/src/arch/sparc/miscregfile.hh
+++ b/src/arch/sparc/miscregfile.hh
@@ -140,6 +140,24 @@ namespace SparcISA
MISCREG_NUMMISCREGS
};
+ enum HPStateFields {
+ id = 0x800, // this impl. dependent (id) field must always be '1' for T1000
+ ibe = 0x400,
+ red = 0x20,
+ hpriv = 0x4,
+ tlz = 0x1
+ };
+
+ enum PStateFields {
+ cle = 0x200,
+ tle = 0x100,
+ mm = 0xC0,
+ pef = 0x10,
+ am = 0x8,
+ priv = 0x4,
+ ie = 0x2
+ };
+
const int NumMiscArchRegs = MISCREG_NUMMISCREGS;
const int NumMiscRegs = MISCREG_NUMMISCREGS;
diff --git a/src/arch/sparc/ua2005.cc b/src/arch/sparc/ua2005.cc
index 2bc8981ac..c9aee9078 100644
--- a/src/arch/sparc/ua2005.cc
+++ b/src/arch/sparc/ua2005.cc
@@ -41,101 +41,100 @@ MiscRegFile::setFSRegWithEffect(int miscReg, const MiscReg &val,
ThreadContext *tc)
{
int64_t time;
- int oldLevel, newLevel;
switch (miscReg) {
- /* Full system only ASRs */
- case MISCREG_SOFTINT:
- // Check if we are going to interrupt because of something
- oldLevel = InterruptLevel(softint);
- newLevel = InterruptLevel(val);
- setReg(miscReg, val);
- //if (newLevel > oldLevel)
- ; // MUST DO SOMETHING HERE TO TELL CPU TO LOOK FOR INTERRUPTS XXX
- //tc->getCpuPtr()->checkInterrupts = true;
- //panic("SOFTINT not implemented\n");
- warn("Writing to softint not really supported, writing: %#x\n", val);
- break;
-
- case MISCREG_SOFTINT_CLR:
- return setRegWithEffect(miscReg, ~val & softint, tc);
- case MISCREG_SOFTINT_SET:
- return setRegWithEffect(miscReg, val | softint, tc);
-
- case MISCREG_TICK_CMPR:
- if (tickCompare == NULL)
- tickCompare = new TickCompareEvent(this, tc);
- setReg(miscReg, val);
- if ((tick_cmpr & mask(63)) && tickCompare->scheduled())
+ /* Full system only ASRs */
+ case MISCREG_SOFTINT:
+ // Check if we are going to interrupt because of something
+ setReg(miscReg, val);
+ tc->getCpuPtr()->checkInterrupts = true;
+ warn("Writing to softint not really supported, writing: %#x\n", val);
+ break;
+
+ case MISCREG_SOFTINT_CLR:
+ return setRegWithEffect(miscReg, ~val & softint, tc);
+ case MISCREG_SOFTINT_SET:
+ return setRegWithEffect(miscReg, val | softint, tc);
+
+ case MISCREG_TICK_CMPR:
+ if (tickCompare == NULL)
+ tickCompare = new TickCompareEvent(this, tc);
+ setReg(miscReg, val);
+ if ((tick_cmpr & mask(63)) && tickCompare->scheduled())
tickCompare->deschedule();
- time = (tick_cmpr & mask(63)) - (tick & mask(63));
- if (!(tick_cmpr & ~mask(63)) && time > 0)
- tickCompare->schedule(time * tc->getCpuPtr()->cycles(1));
- warn ("writing to TICK compare register %#X\n", val);
- break;
-
- case MISCREG_STICK_CMPR:
- if (sTickCompare == NULL)
- sTickCompare = new STickCompareEvent(this, tc);
- setReg(miscReg, val);
- if ((stick_cmpr & mask(63)) && sTickCompare->scheduled())
- sTickCompare->deschedule();
- time = (stick_cmpr & mask(63)) - (stick & mask(63));
- if (!(stick_cmpr & ~mask(63)) && time > 0)
- sTickCompare->schedule(time * tc->getCpuPtr()->cycles(1));
- warn ("writing to sTICK compare register value %#X\n", val);
- break;
-
- case MISCREG_PIL:
- setReg(miscReg, val);
- //tc->getCpuPtr()->checkInterrupts;
- // MUST DO SOMETHING HERE TO TELL CPU TO LOOK FOR INTERRUPTS XXX
- // panic("PIL not implemented\n");
- warn ("PIL not implemented writing %#X\n", val);
- break;
-
- case MISCREG_HVER:
- panic("Shouldn't be writing HVER\n");
-
- case MISCREG_HTBA:
- // clear lower 7 bits on writes.
- setReg(miscReg, val & ULL(~0x7FFF));
- break;
-
- case MISCREG_QUEUE_CPU_MONDO_HEAD:
- case MISCREG_QUEUE_CPU_MONDO_TAIL:
- case MISCREG_QUEUE_DEV_MONDO_HEAD:
- case MISCREG_QUEUE_DEV_MONDO_TAIL:
- case MISCREG_QUEUE_RES_ERROR_HEAD:
- case MISCREG_QUEUE_RES_ERROR_TAIL:
- case MISCREG_QUEUE_NRES_ERROR_HEAD:
- case MISCREG_QUEUE_NRES_ERROR_TAIL:
- setReg(miscReg, val);
- tc->getCpuPtr()->checkInterrupts = true;
- break;
-
- case MISCREG_HSTICK_CMPR:
- if (hSTickCompare == NULL)
- hSTickCompare = new HSTickCompareEvent(this, tc);
- setReg(miscReg, val);
- if ((hstick_cmpr & mask(63)) && hSTickCompare->scheduled())
+ time = (tick_cmpr & mask(63)) - (tick & mask(63));
+ if (!(tick_cmpr & ~mask(63)) && time > 0)
+ tickCompare->schedule(time * tc->getCpuPtr()->cycles(1));
+ warn ("writing to TICK compare register %#X\n", val);
+ break;
+
+ case MISCREG_STICK_CMPR:
+ if (sTickCompare == NULL)
+ sTickCompare = new STickCompareEvent(this, tc);
+ setReg(miscReg, val);
+ if ((stick_cmpr & mask(63)) && sTickCompare->scheduled())
+ sTickCompare->deschedule();
+ time = (stick_cmpr & mask(63)) - (stick & mask(63));
+ if (!(stick_cmpr & ~mask(63)) && time > 0)
+ sTickCompare->schedule(time * tc->getCpuPtr()->cycles(1));
+ warn ("writing to sTICK compare register value %#X\n", val);
+ break;
+
+ case MISCREG_PSTATE:
+ if (val & ie && !(pstate & ie)) {
+ tc->getCpuPtr()->checkInterrupts = true;
+ }
+ setReg(miscReg, val);
+
+ case MISCREG_PIL:
+ if (val < pil) {
+ tc->getCpuPtr()->checkInterrupts = true;
+ }
+ setReg(miscReg, val);
+ break;
+
+ case MISCREG_HVER:
+ panic("Shouldn't be writing HVER\n");
+
+ case MISCREG_HTBA:
+ // clear lower 7 bits on writes.
+ setReg(miscReg, val & ULL(~0x7FFF));
+ break;
+
+ case MISCREG_QUEUE_CPU_MONDO_HEAD:
+ case MISCREG_QUEUE_CPU_MONDO_TAIL:
+ case MISCREG_QUEUE_DEV_MONDO_HEAD:
+ case MISCREG_QUEUE_DEV_MONDO_TAIL:
+ case MISCREG_QUEUE_RES_ERROR_HEAD:
+ case MISCREG_QUEUE_RES_ERROR_TAIL:
+ case MISCREG_QUEUE_NRES_ERROR_HEAD:
+ case MISCREG_QUEUE_NRES_ERROR_TAIL:
+ setReg(miscReg, val);
+ tc->getCpuPtr()->checkInterrupts = true;
+ break;
+
+ case MISCREG_HSTICK_CMPR:
+ if (hSTickCompare == NULL)
+ hSTickCompare = new HSTickCompareEvent(this, tc);
+ setReg(miscReg, val);
+ if ((hstick_cmpr & mask(63)) && hSTickCompare->scheduled())
hSTickCompare->deschedule();
- time = (hstick_cmpr & mask(63)) - (stick & mask(63));
- if (!(hstick_cmpr & ~mask(63)) && time > 0)
- hSTickCompare->schedule(time * tc->getCpuPtr()->cycles(1));
- warn ("writing to hsTICK compare register value %#X\n", val);
- break;
-
- case MISCREG_HPSTATE:
- // i.d. is always set on any hpstate write
- setReg(miscReg, val | 1 << 11);
- break;
- case MISCREG_HTSTATE:
- case MISCREG_STRAND_STS_REG:
- setReg(miscReg, val);
- break;
-
- default:
- panic("Invalid write to FS misc register\n");
+ time = (hstick_cmpr & mask(63)) - (stick & mask(63));
+ if (!(hstick_cmpr & ~mask(63)) && time > 0)
+ hSTickCompare->schedule(time * tc->getCpuPtr()->cycles(1));
+ warn ("writing to hsTICK compare register value %#X\n", val);
+ break;
+
+ case MISCREG_HPSTATE:
+ // T1000 spec says impl. dependent val must always be 1
+ setReg(miscReg, val | id);
+
+ case MISCREG_HTSTATE:
+ case MISCREG_STRAND_STS_REG:
+ setReg(miscReg, val);
+ break;
+
+ default:
+ panic("Invalid write to FS misc register %s\n", getMiscRegName(miscReg));
}
}
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