105 lines
2.0 KiB
C
Executable File
105 lines
2.0 KiB
C
Executable File
#include "pxa255_IC.h"
|
|
#include "mem.h"
|
|
|
|
|
|
static void pxa255icPrvHandleChanges(Pxa255ic* ic){
|
|
|
|
Boolean nowIrq, nowFiq;
|
|
UInt32 unmasked = ic->ICPR & ic->ICMR;
|
|
|
|
nowFiq = (unmasked & ic->ICLR) != 0;
|
|
nowIrq = (unmasked & ~ic->ICLR) != 0;
|
|
|
|
if(nowFiq != ic->wasFiq) cpuIrq(ic->cpu, true, nowFiq);
|
|
if(nowIrq != ic->wasIrq) cpuIrq(ic->cpu, false, nowIrq);
|
|
|
|
ic->wasFiq = nowFiq;
|
|
ic->wasIrq = nowIrq;
|
|
}
|
|
|
|
static Boolean pxa255icPrvMemAccessF(void* userData, UInt32 pa, UInt8 size, Boolean write, void* buf){
|
|
|
|
Pxa255ic* ic = userData;
|
|
UInt32 val = 0;
|
|
|
|
if(size != 4) {
|
|
err_str(__FILE__ ": Unexpected ");
|
|
// err_str(write ? "write" : "read");
|
|
// err_str(" of ");
|
|
// err_dec(size);
|
|
// err_str(" bytes to 0x");
|
|
// err_hex(pa);
|
|
// err_str("\r\n");
|
|
return true; //we do not support non-word accesses
|
|
}
|
|
|
|
pa = (pa - PXA255_IC_BASE) >> 2;
|
|
|
|
if(write){
|
|
if(pa == 1) ic->ICMR = *(UInt32*)buf;
|
|
else if(pa == 2) ic->ICLR = *(UInt32*)buf;
|
|
else if(pa == 5) ic->ICCR = *(UInt32*)buf;
|
|
else return true;
|
|
pxa255icPrvHandleChanges(ic);
|
|
}
|
|
else{
|
|
switch(pa){
|
|
|
|
case 0:
|
|
val = ic->ICPR & ic->ICMR & ~ic->ICLR;
|
|
break;
|
|
|
|
case 1:
|
|
val = ic->ICMR;
|
|
break;
|
|
|
|
case 2:
|
|
val = ic->ICLR;
|
|
break;
|
|
|
|
case 3:
|
|
val = ic->ICPR & ic->ICMR & ic->ICLR;
|
|
break;
|
|
|
|
case 4:
|
|
val = ic->ICPR;
|
|
break;
|
|
|
|
case 5:
|
|
val = ic->ICCR;
|
|
break;
|
|
|
|
}
|
|
*(UInt32*)buf = val;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
Boolean pxa255icInit(Pxa255ic* ic, ArmCpu* cpu, ArmMem* physMem){
|
|
|
|
__mem_zero(ic, sizeof(Pxa255ic));
|
|
ic->cpu = cpu;
|
|
return memRegionAdd(physMem, PXA255_IC_BASE, PXA255_IC_SIZE, pxa255icPrvMemAccessF, ic);
|
|
}
|
|
|
|
|
|
void pxa255icInt(Pxa255ic* ic, UInt8 intNum, Boolean raise){ //interrupt caused by emulated hardware
|
|
|
|
UInt32 old_, new_;
|
|
|
|
old_ = new_ = ic->ICPR;
|
|
|
|
if(raise) new_ |= (1UL << intNum);
|
|
else new_ &=~ (1UL << intNum);
|
|
|
|
if(new_ != old_){
|
|
ic->ICPR = new_;
|
|
pxa255icPrvHandleChanges(ic);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|