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GBA SIO: Move NORMAL finishing logic out of drivers

This commit is contained in:
Vicki Pfau 2024-05-21 23:39:15 -07:00
parent 1b0b540de6
commit 54c9e9d411
5 changed files with 25 additions and 30 deletions
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2
include/mgba/internal/gba/sio.h
View File

@ -86,6 +86,8 @@ uint16_t GBASIOWriteRegister(struct GBASIO* sio, uint32_t address, uint16_t valu
int32_t GBASIOTransferCycles(struct GBASIO* sio);
void GBASIOMultiplayerFinishTransfer(struct GBASIO* sio, uint16_t data[4], uint32_t cyclesLate);
void GBASIONormal8FinishTransfer(struct GBASIO* sio, uint8_t data, uint32_t cyclesLate);
void GBASIONormal32FinishTransfer(struct GBASIO* sio, uint32_t data, uint32_t cyclesLate);
int GBASIOJOYSendCommand(struct GBASIODriver* sio, enum GBASIOJOYCommand command, uint8_t* data);

7
src/gba/extra/battlechip.c
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@ -115,12 +115,7 @@ void _battlechipTransferEvent(struct mTiming* timing, void* user, uint32_t cycle
struct GBASIOBattlechipGate* gate = user;
if (gate->d.p->mode == GBA_SIO_NORMAL_32) {
gate->d.p->p->memory.io[GBA_REG(SIODATA32_LO)] = 0;
gate->d.p->p->memory.io[GBA_REG(SIODATA32_HI)] = 0;
gate->d.p->siocnt = GBASIONormalClearStart(gate->d.p->siocnt);
if (GBASIONormalIsIrq(gate->d.p->siocnt)) {
GBARaiseIRQ(gate->d.p->p, GBA_IRQ_SIO, cyclesLate);
}
GBASIONormal32FinishTransfer(gate->d.p, 0, cyclesLate);
return;
}

17
src/gba/sio.c
View File

@ -360,6 +360,23 @@ void GBASIOMultiplayerFinishTransfer(struct GBASIO* sio, uint16_t data[4], uint3
}
}
void GBASIONormal8FinishTransfer(struct GBASIO* sio, uint8_t data, uint32_t cyclesLate) {
sio->siocnt = GBASIONormalClearStart(sio->siocnt);
sio->p->memory.io[GBA_REG(SIODATA8)] = data;
if (GBASIONormalIsIrq(sio->siocnt)) {
GBARaiseIRQ(sio->p, GBA_IRQ_SIO, cyclesLate);
}
}
void GBASIONormal32FinishTransfer(struct GBASIO* sio, uint32_t data, uint32_t cyclesLate) {
sio->siocnt = GBASIONormalClearStart(sio->siocnt);
sio->p->memory.io[GBA_REG(SIODATA32_LO)] = data;
sio->p->memory.io[GBA_REG(SIODATA32_HI)] = data >> 16;
if (GBASIONormalIsIrq(sio->siocnt)) {
GBARaiseIRQ(sio->p, GBA_IRQ_SIO, cyclesLate);
}
}
int GBASIOJOYSendCommand(struct GBASIODriver* sio, enum GBASIOJOYCommand command, uint8_t* data) {
switch (command) {
case JOY_RESET:

9
src/gba/sio/gbp.c
View File

@ -143,7 +143,6 @@ static int _gbpSioConnectedDevices(struct GBASIODriver* driver) {
void _gbpSioProcessEvents(struct mTiming* timing, void* user, uint32_t cyclesLate) {
UNUSED(timing);
UNUSED(cyclesLate);
struct GBASIOPlayer* gbp = user;
uint32_t tx = 0;
int txPosition = gbp->txPosition;
@ -155,11 +154,5 @@ void _gbpSioProcessEvents(struct mTiming* timing, void* user, uint32_t cyclesLat
}
tx = _gbpTxData[txPosition];
++gbp->txPosition;
gbp->p->memory.io[GBA_REG(SIODATA32_LO)] = tx;
gbp->p->memory.io[GBA_REG(SIODATA32_HI)] = tx >> 16;
if (GBASIONormalIsIrq(gbp->d.p->siocnt)) {
GBARaiseIRQ(gbp->p, GBA_IRQ_SIO, cyclesLate);
}
gbp->d.p->siocnt = GBASIONormalClearStart(gbp->d.p->siocnt);
gbp->p->memory.io[GBA_REG(SIOCNT)] = gbp->d.p->siocnt & ~0x0080;
GBASIONormal32FinishTransfer(gbp->d.p, tx, cyclesLate);
}

20
src/gba/sio/lockstep.c
View File

@ -283,31 +283,19 @@ static void _finishTransfer(struct GBASIOLockstepNode* node) {
GBASIOMultiplayerFinishTransfer(sio, node->p->multiRecv, 0);
break;
case GBA_SIO_NORMAL_8:
// TODO
sio->siocnt = GBASIONormalClearStart(sio->siocnt);
if (node->id) {
sio->siocnt = GBASIONormalSetSi(sio->siocnt, GBASIONormalGetIdleSo(node->p->players[node->id - 1]->d.p->siocnt));
node->d.p->p->memory.io[GBA_REG(SIODATA8)] = node->p->normalRecv[node->id - 1] & 0xFF;
GBASIONormal8FinishTransfer(sio, node->p->normalRecv[node->id - 1], 0);
} else {
node->d.p->p->memory.io[GBA_REG(SIODATA8)] = 0xFFFF;
}
if (GBASIONormalIsIrq(sio->siocnt)) {
GBARaiseIRQ(sio->p, GBA_IRQ_SIO, 0);
GBASIONormal8FinishTransfer(sio, 0xFF, 0);
}
break;
case GBA_SIO_NORMAL_32:
// TODO
sio->siocnt = GBASIONormalClearStart(sio->siocnt);
if (node->id) {
sio->siocnt = GBASIONormalSetSi(sio->siocnt, GBASIONormalGetIdleSo(node->p->players[node->id - 1]->d.p->siocnt));
node->d.p->p->memory.io[GBA_REG(SIODATA32_LO)] = node->p->normalRecv[node->id - 1];
node->d.p->p->memory.io[GBA_REG(SIODATA32_HI)] = node->p->normalRecv[node->id - 1] >> 16;
GBASIONormal32FinishTransfer(sio, node->p->normalRecv[node->id - 1], 0);
} else {
node->d.p->p->memory.io[GBA_REG(SIODATA32_LO)] = 0xFFFF;
node->d.p->p->memory.io[GBA_REG(SIODATA32_HI)] = 0xFFFF;
}
if (GBASIONormalIsIrq(sio->siocnt)) {
GBARaiseIRQ(sio->p, GBA_IRQ_SIO, 0);
GBASIONormal32FinishTransfer(sio, 0xFFFFFFFF, 0);
}
break;
default: