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-rw-r--r--src/Wifi.cpp150
1 files changed, 104 insertions, 46 deletions
diff --git a/src/Wifi.cpp b/src/Wifi.cpp
index db4ad42..4ce016c 100644
--- a/src/Wifi.cpp
+++ b/src/Wifi.cpp
@@ -58,13 +58,16 @@ typedef struct
u8 Rate;
u8 CurPhase;
u32 CurPhaseTime;
+ u32 HalfwordTimeMask;
} TXSlot;
TXSlot TXSlots[6];
u8 RXBuffer[2048];
+u32 RXBufferPtr;
u32 RXTime;
+u32 RXHalfwordTimeMask;
u16 RXEndAddr;
u32 ComStatus; // 0=waiting for packets 1=receiving 2=sending
@@ -465,7 +468,12 @@ bool ProcessTX(TXSlot* slot, int num)
slot->CurPhaseTime--;
if (slot->CurPhaseTime > 0)
{
- if (slot->CurPhase == 2)
+ if (slot->CurPhase == 1)
+ {
+ if (!(slot->CurPhaseTime & slot->HalfwordTimeMask))
+ IOPORT(W_RXTXAddr)++;
+ }
+ else if (slot->CurPhase == 2)
{
MPReplyTimer--;
if (MPReplyTimer == 0 && MPNumReplies > 0)
@@ -513,8 +521,16 @@ bool ProcessTX(TXSlot* slot, int num)
SetStatus(3);
u32 len = slot->Length;
- if (slot->Rate == 2) len *= 4;
- else len *= 8;
+ if (slot->Rate == 2)
+ {
+ len *= 4;
+ slot->HalfwordTimeMask = 0x7;
+ }
+ else
+ {
+ len *= 8;
+ slot->HalfwordTimeMask = 0xF;
+ }
slot->CurPhase = 1;
slot->CurPhaseTime = len;
@@ -522,6 +538,10 @@ bool ProcessTX(TXSlot* slot, int num)
*(u16*)&RAM[slot->Addr + 0xC + 22] = IOPORT(W_TXSeqNo) << 4;
IOPORT(W_TXSeqNo) = (IOPORT(W_TXSeqNo) + 1) & 0x0FFF;
+ // set TX addr
+ // TODO: what does this say when sending a MP ack?? I don't think that packet is stored in RAM
+ IOPORT(W_RXTXAddr) = slot->Addr >> 1;
+
int txlen = Platform::MP_SendPacket(&RAM[slot->Addr], 12 + slot->Length);
if (num != 4) printf("wifi: sent %d/%d bytes of slot%d packet, framectl=%04X, %04X %04X\n",
txlen, slot->Length+12, num, *(u16*)&RAM[slot->Addr + 0xC], *(u16*)&RAM[slot->Addr + 0x24], *(u16*)&RAM[slot->Addr + 0x26]);
@@ -632,6 +652,25 @@ bool ProcessTX(TXSlot* slot, int num)
}
+inline void IncrementRXAddr(u16& addr, u16 inc)
+{
+ addr += inc;
+ if (addr >= (IOPORT(W_RXBufEnd) & 0x1FFE))
+ {
+ addr -= (IOPORT(W_RXBufEnd) & 0x1FFE);
+ addr += (IOPORT(W_RXBufBegin) & 0x1FFE);
+ }
+}
+
+inline void IncrementRXAddr(u16& addr)
+{
+ addr += 2;
+ if (addr == (IOPORT(W_RXBufEnd) & 0x1FFE))
+ {
+ addr = (IOPORT(W_RXBufBegin) & 0x1FFE);
+ }
+}
+
bool CheckRX(bool block)
{
if (!(IOPORT(W_RXCnt) & 0x8000))
@@ -725,44 +764,33 @@ bool CheckRX(bool block)
printf("wifi: received packet FC:%04X SN:%04X CL:%04X\n", framectl, *(u16*)&RXBuffer[12+4+6+6+6], *(u16*)&RXBuffer[12+4+6+6+6+2+2]);
// make RX header
- // TODO: make it upon RX end
if (bssidmatch) rxflags |= 0x8000;
*(u16*)&RXBuffer[0] = rxflags;
*(u16*)&RXBuffer[2] = 0x0040; // ???
- *(u16*)&RXBuffer[4] = 0x7777;
*(u16*)&RXBuffer[6] = txrate;
*(u16*)&RXBuffer[8] = framelen;
*(u16*)&RXBuffer[10] = 0x4080; // min/max RSSI. dunno
- RXTime = framelen * ((txrate==0x14) ? 4:8);
+ RXTime = framelen;
- // TODO: write packet progressively?
- // TODO: RX/TX addr register
- framelen += 12;
- u16 addr = IOPORT(W_RXBufWriteCursor) << 1;
- for (int i = 0; i < framelen; i += 2)
+ if (txrate == 0x14)
{
- *(u16*)&RAM[addr] = *(u16*)&RXBuffer[i];
- addr += 2;
-
- if (addr == (IOPORT(W_RXBufEnd) & 0x1FFE))
- addr = (IOPORT(W_RXBufBegin) & 0x1FFE);
-
- if (addr == (IOPORT(W_RXBufReadCursor) << 1))
- {
- printf("wifi: RX buffer full\n");
- // TODO: proper error management
- return false;
- }
+ RXTime *= 4;
+ RXHalfwordTimeMask = 0x7;
+ }
+ else
+ {
+ RXTime *= 8;
+ RXHalfwordTimeMask = 0xF;
}
- if (addr & 0x2) addr += 2;
- if (addr == (IOPORT(W_RXBufEnd) & 0x1FFE))
- addr = (IOPORT(W_RXBufBegin) & 0x1FFE);
+ u16 addr = IOPORT(W_RXBufWriteCursor) << 1;
+ IncrementRXAddr(addr, 12);
+ IOPORT(W_RXTXAddr) = addr >> 1;
- RXEndAddr = (addr & ~0x3) >> 1;
+ RXBufferPtr = 12;
SetIRQ(6);
SetStatus(6);
@@ -877,29 +905,64 @@ void USTimer(u32 param)
{
// TODO: make sure it isn't possible to send and receive at the same time
RXTime--;
- if (RXTime == 0)
+ if (!(RXTime & RXHalfwordTimeMask))
{
- IOPORT(W_RXBufWriteCursor) = RXEndAddr;
- SetIRQ(0);
- SetStatus(1);
+ u16 addr = IOPORT(W_RXTXAddr) << 1;
+ *(u16*)&RAM[addr] = *(u16*)&RXBuffer[RXBufferPtr];
+
+ IncrementRXAddr(addr);
+ RXBufferPtr += 2;
- if (TXCurSlot == -1)
+ if (RXTime == 0) // finished receiving
{
- ComStatus = 0;
- RXCounter = 0;
+ if (addr & 0x2) IncrementRXAddr(addr);
+
+ // copy the RX header
+ u16 headeraddr = IOPORT(W_RXBufWriteCursor) << 1;
+ *(u16*)&RAM[headeraddr] = *(u16*)&RXBuffer[0]; IncrementRXAddr(headeraddr);
+ *(u16*)&RAM[headeraddr] = *(u16*)&RXBuffer[2]; IncrementRXAddr(headeraddr, 4);
+ *(u16*)&RAM[headeraddr] = *(u16*)&RXBuffer[6]; IncrementRXAddr(headeraddr);
+ *(u16*)&RAM[headeraddr] = *(u16*)&RXBuffer[8]; IncrementRXAddr(headeraddr);
+ *(u16*)&RAM[headeraddr] = *(u16*)&RXBuffer[10];
+
+ IOPORT(W_RXBufWriteCursor) = (addr & ~0x3) >> 1;
+
+ SetIRQ(0);
+ SetStatus(1);
+
+ if (TXCurSlot == -1)
+ {
+ ComStatus = 0;
+ RXCounter = 0;
+ }
+
+ if ((RXBuffer[0] & 0x0F) == 0x0C)
+ {
+ u16 clientmask = *(u16*)&RXBuffer[0xC + 26];
+ if (IOPORT(W_AIDLow) && (RXBuffer[0xC + 4] & 0x01) && (clientmask & (1 << IOPORT(W_AIDLow))))
+ {
+ printf("MP: attempting to reply: %04X %04X, delay=%04X\n",
+ IOPORT(W_TXSlotReply1), IOPORT(W_TXSlotReply2), *(u16*)&RXBuffer[0xC + 24]);
+
+ SendMPReply(*(u16*)&RXBuffer[0xC + 24], *(u16*)&RXBuffer[0xC + 26]);
+ }
+ }
}
- if ((RXBuffer[0] & 0x0F) == 0x0C)
+ if (addr == (IOPORT(W_RXBufReadCursor) << 1))
{
- u16 clientmask = *(u16*)&RXBuffer[0xC + 26];
- if (IOPORT(W_AIDLow) && (RXBuffer[0xC + 4] & 0x01) && (clientmask & (1 << IOPORT(W_AIDLow))))
+ printf("wifi: RX buffer full\n");
+ RXTime = 0;
+ SetStatus(1);
+ if (TXCurSlot == -1)
{
- printf("MP: attempting to reply: %04X %04X, delay=%04X\n",
- IOPORT(W_TXSlotReply1), IOPORT(W_TXSlotReply2), *(u16*)&RXBuffer[0xC + 24]);
-
- SendMPReply(*(u16*)&RXBuffer[0xC + 24], *(u16*)&RXBuffer[0xC + 26]);
+ ComStatus = 0;
+ RXCounter = 0;
}
+ // TODO: proper error management
}
+
+ IOPORT(W_RXTXAddr) = addr >> 1;
}
}
@@ -1029,11 +1092,6 @@ u16 Read(u32 addr)
case W_TXBusy:
return IOPORT(W_TXBusy) & 0x001F; // no bit for MP replies. odd
-
- //case 0x214: NDS::debug(0); break;
- //case 0x040: NDS::debug(0); break;
- //case 0x54: printf("wifi: read WRCSR -> %04X\n", IOPORT(0x54)); break;
- case 0x268: printf("read RXTXADDR\n"); break;
}
//printf("WIFI: read %08X\n", addr);