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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 8327 | maxcodehac | 1 | #include "pxa255_IC.h" |
| 2 | #include "mem.h" |
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| 3 | |||
| 4 | |||
| 5 | static void pxa255icPrvHandleChanges(Pxa255ic* ic){ |
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| 6 | |||
| 7 | Boolean nowIrq, nowFiq; |
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| 8 | UInt32 unmasked = ic->ICPR & ic->ICMR; |
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| 9 | |||
| 10 | nowFiq = (unmasked & ic->ICLR) != 0; |
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| 11 | nowIrq = (unmasked & ~ic->ICLR) != 0; |
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| 12 | |||
| 13 | if(nowFiq != ic->wasFiq) cpuIrq(ic->cpu, true, nowFiq); |
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| 14 | if(nowIrq != ic->wasIrq) cpuIrq(ic->cpu, false, nowIrq); |
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| 15 | |||
| 16 | ic->wasFiq = nowFiq; |
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| 17 | ic->wasIrq = nowIrq; |
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| 18 | } |
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| 19 | |||
| 20 | static Boolean pxa255icPrvMemAccessF(void* userData, UInt32 pa, UInt8 size, Boolean write, void* buf){ |
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| 21 | |||
| 22 | Pxa255ic* ic = userData; |
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| 23 | UInt32 val = 0; |
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| 24 | |||
| 25 | if(size != 4) { |
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| 26 | err_str(__FILE__ ": Unexpected "); |
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| 27 | // err_str(write ? "write" : "read"); |
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| 28 | // err_str(" of "); |
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| 29 | // err_dec(size); |
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| 30 | // err_str(" bytes to 0x"); |
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| 31 | // err_hex(pa); |
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| 32 | // err_str("\r\n"); |
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| 33 | return true; //we do not support non-word accesses |
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| 34 | } |
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| 35 | |||
| 36 | pa = (pa - PXA255_IC_BASE) >> 2; |
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| 37 | |||
| 38 | if(write){ |
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| 39 | if(pa == 1) ic->ICMR = *(UInt32*)buf; |
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| 40 | else if(pa == 2) ic->ICLR = *(UInt32*)buf; |
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| 41 | else if(pa == 5) ic->ICCR = *(UInt32*)buf; |
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| 42 | else return true; |
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| 43 | pxa255icPrvHandleChanges(ic); |
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| 44 | } |
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| 45 | else{ |
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| 46 | switch(pa){ |
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| 47 | |||
| 48 | case 0: |
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| 49 | val = ic->ICPR & ic->ICMR & ~ic->ICLR; |
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| 50 | break; |
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| 51 | |||
| 52 | case 1: |
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| 53 | val = ic->ICMR; |
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| 54 | break; |
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| 55 | |||
| 56 | case 2: |
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| 57 | val = ic->ICLR; |
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| 58 | break; |
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| 59 | |||
| 60 | case 3: |
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| 61 | val = ic->ICPR & ic->ICMR & ic->ICLR; |
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| 62 | break; |
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| 63 | |||
| 64 | case 4: |
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| 65 | val = ic->ICPR; |
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| 66 | break; |
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| 67 | |||
| 68 | case 5: |
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| 69 | val = ic->ICCR; |
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| 70 | break; |
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| 71 | |||
| 72 | } |
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| 73 | *(UInt32*)buf = val; |
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| 74 | } |
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| 75 | return true; |
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| 76 | } |
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| 77 | |||
| 78 | Boolean pxa255icInit(Pxa255ic* ic, ArmCpu* cpu, ArmMem* physMem){ |
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| 79 | |||
| 80 | __mem_zero(ic, sizeof(Pxa255ic)); |
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| 81 | ic->cpu = cpu; |
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| 82 | return memRegionAdd(physMem, PXA255_IC_BASE, PXA255_IC_SIZE, pxa255icPrvMemAccessF, ic); |
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| 83 | } |
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| 84 | |||
| 85 | |||
| 86 | void pxa255icInt(Pxa255ic* ic, UInt8 intNum, Boolean raise){ //interrupt caused by emulated hardware |
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| 87 | |||
| 88 | UInt32 old_, new_; |
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| 89 | |||
| 90 | old_ = new_ = ic->ICPR; |
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| 91 | |||
| 92 | if(raise) new_ |= (1UL << intNum); |
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| 93 | else new_ &=~ (1UL << intNum); |
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| 94 | |||
| 95 | if(new_ != old_){ |
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| 96 | ic->ICPR = new_; |
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| 97 | pxa255icPrvHandleChanges(ic); |
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| 98 | } |
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| 99 | } |
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| 100 |