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GBA SIO: Move more SIO logic out of drivers

This commit is contained in:
Vicki Pfau 2024-05-18 16:26:33 -07:00
parent 09a69a32c0
commit f9e15c53d9
2 changed files with 52 additions and 16 deletions
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63
src/gba/sio.c
View File

@ -69,6 +69,23 @@ static void _switchMode(struct GBASIO* sio) {
if (sio->activeDriver && sio->activeDriver->load) {
sio->activeDriver->load(sio->activeDriver);
}
int id = 0;
switch (newMode) {
case GBA_SIO_MULTI:
if (sio->activeDriver && sio->activeDriver->deviceId) {
id = sio->activeDriver->deviceId(sio->activeDriver);
}
if (id) {
sio->rcnt |= 4;
} else {
sio->rcnt &= ~4;
}
break;
default:
// TODO
break;
}
}
}
@ -239,24 +256,17 @@ void GBASIOWriteSIOCNT(struct GBASIO* sio, uint16_t value) {
}
uint16_t GBASIOWriteRegister(struct GBASIO* sio, uint32_t address, uint16_t value) {
bool handled = false;
if (sio->activeDriver) {
handled = sio->activeDriver->writeRegister && sio->activeDriver->handlesMode(sio->activeDriver, sio->mode);
}
if (handled) {
return sio->activeDriver->writeRegister(sio->activeDriver, address, value);
}
// Dummy drivers
switch (sio->mode) {
case GBA_SIO_JOYBUS:
switch (address) {
case GBA_REG_JOYCNT:
mLOG(GBA_SIO, DEBUG, "JOY write: CNT <- %04X", value);
return (value & 0x0040) | (sio->p->memory.io[GBA_REG(JOYCNT)] & ~(value & 0x7) & ~0x0040);
value = (value & 0x0040) | (sio->p->memory.io[GBA_REG(JOYCNT)] & ~(value & 0x7) & ~0x0040);
break;
case GBA_REG_JOYSTAT:
mLOG(GBA_SIO, DEBUG, "JOY write: STAT <- %04X", value);
return (value & 0x0030) | (sio->p->memory.io[GBA_REG(JOYSTAT)] & ~0x30);
value = (value & 0x0030) | (sio->p->memory.io[GBA_REG(JOYSTAT)] & ~0x30);
break;
case GBA_REG_JOY_TRANS_LO:
mLOG(GBA_SIO, DEBUG, "JOY write: TRANS_LO <- %04X", value);
break;
@ -270,10 +280,41 @@ uint16_t GBASIOWriteRegister(struct GBASIO* sio, uint32_t address, uint16_t valu
break;
}
break;
case GBA_SIO_NORMAL_8:
switch (address) {
case GBA_REG_SIODATA8:
mLOG(GBA_SIO, DEBUG, "NORMAL8 write: SIODATA8 <- %02X", value);
break;
default:
mLOG(GBA_SIO, DEBUG, "NORMAL8 write: Unknown reg %03X <- %04X", address, value);
break;
case GBA_REG_RCNT:
break;
}
break;
case GBA_SIO_NORMAL_32:
switch (address) {
case GBA_REG_SIODATA32_LO:
mLOG(GBA_SIO, DEBUG, "NORMAL32 write: SIODATA32_LO <- %04X", value);
break;
case GBA_REG_SIODATA32_HI:
mLOG(GBA_SIO, DEBUG, "NORMAL32 write: SIODATA32_HI <- %04X", value);
break;
default:
mLOG(GBA_SIO, DEBUG, "NORMAL32 write: Unknown reg %03X <- %04X", address, value);
break;
case GBA_REG_RCNT:
break;
}
break;
default:
// TODO
break;
}
if (sio->activeDriver && sio->activeDriver->writeRegister && sio->activeDriver->handlesMode(sio->activeDriver, sio->mode)) {
sio->activeDriver->writeRegister(sio->activeDriver, address, value);
}
return value;
}

5
src/gba/sio/lockstep.c
View File

@ -117,8 +117,6 @@ bool GBASIOLockstepNodeLoad(struct GBASIODriver* driver) {
node->d.p->siocnt = GBASIOMultiplayerSetReady(node->d.p->siocnt, node->p->attachedMulti == node->p->d.attached);
if (node->id) {
node->d.p->rcnt |= 4;
node->d.p->siocnt = GBASIOMultiplayerFillSlave(node->d.p->siocnt);
int try;
for (try = 0; try < 3; ++try) {
uint16_t masterSiocnt;
@ -127,9 +125,6 @@ bool GBASIOLockstepNodeLoad(struct GBASIODriver* driver) {
break;
}
}
} else {
node->d.p->rcnt &= ~4;
node->d.p->siocnt = GBASIOMultiplayerClearSlave(node->d.p->siocnt);
}
break;
case GBA_SIO_NORMAL_8: