mirror of https://github.com/mgba-emu/mgba.git
GBA SIO: Start moving common SIO logic out of drivers
This commit is contained in:
parent
451da0f8a4
commit
09a69a32c0
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@ -120,8 +120,6 @@ struct GBASIODriver {
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uint16_t (*writeRegister)(struct GBASIODriver* driver, uint32_t address, uint16_t value);
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};
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void GBASIOJOYCreate(struct GBASIODriver* sio);
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enum GBASIOBattleChipGateFlavor {
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GBA_FLAVOR_BATTLECHIP_GATE = 4,
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GBA_FLAVOR_PROGRESS_GATE = 5,
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@ -31,7 +31,6 @@ set(SOURCE_FILES
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sharkport.c
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sio.c
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sio/gbp.c
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sio/joybus.c
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timer.c
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video.c)
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100
src/gba/sio.c
100
src/gba/sio.c
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@ -186,7 +186,32 @@ void GBASIOWriteSIOCNT(struct GBASIO* sio, uint16_t value) {
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sio->siocnt = value & 0x3000;
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_switchMode(sio);
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}
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if (sio->activeDriver && sio->activeDriver->writeRegister) {
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int id = 0;
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int connected = 0;
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bool handled = false;
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if (sio->activeDriver) {
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handled = sio->activeDriver->handlesMode(sio->activeDriver, sio->mode);
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if (handled) {
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if (sio->activeDriver->deviceId) {
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id = sio->activeDriver->deviceId(sio->activeDriver);
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}
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connected = sio->activeDriver->connectedDevices(sio->activeDriver);
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handled = !!sio->activeDriver->writeRegister;
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}
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}
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switch (sio->mode) {
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case GBA_SIO_MULTI:
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value &= 0xFF83;
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value = GBASIOMultiplayerSetSlave(value, id || !connected);
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value = GBASIOMultiplayerSetId(value, id);
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value |= sio->siocnt & 0x00FC;
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break;
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default:
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// TODO
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break;
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}
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if (handled) {
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value = sio->activeDriver->writeRegister(sio->activeDriver, GBA_REG_SIOCNT, value);
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} else {
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// Dummy drivers
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@ -203,8 +228,7 @@ void GBASIOWriteSIOCNT(struct GBASIO* sio, uint16_t value) {
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}
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break;
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case GBA_SIO_MULTI:
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value &= 0xFF83;
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value |= 0xC;
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value = GBASIOMultiplayerFillReady(value);
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break;
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default:
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// TODO
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@ -215,7 +239,12 @@ void GBASIOWriteSIOCNT(struct GBASIO* sio, uint16_t value) {
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}
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uint16_t GBASIOWriteRegister(struct GBASIO* sio, uint32_t address, uint16_t value) {
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if (sio->activeDriver && sio->activeDriver->writeRegister) {
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bool handled = false;
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if (sio->activeDriver) {
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handled = sio->activeDriver->writeRegister && sio->activeDriver->handlesMode(sio->activeDriver, sio->mode);
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}
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if (handled) {
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return sio->activeDriver->writeRegister(sio->activeDriver, address, value);
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}
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// Dummy drivers
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@ -223,9 +252,22 @@ uint16_t GBASIOWriteRegister(struct GBASIO* sio, uint32_t address, uint16_t valu
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case GBA_SIO_JOYBUS:
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switch (address) {
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case GBA_REG_JOYCNT:
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mLOG(GBA_SIO, DEBUG, "JOY write: CNT <- %04X", value);
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return (value & 0x0040) | (sio->p->memory.io[GBA_REG(JOYCNT)] & ~(value & 0x7) & ~0x0040);
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case GBA_REG_JOYSTAT:
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mLOG(GBA_SIO, DEBUG, "JOY write: STAT <- %04X", value);
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return (value & 0x0030) | (sio->p->memory.io[GBA_REG(JOYSTAT)] & ~0x30);
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case GBA_REG_JOY_TRANS_LO:
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mLOG(GBA_SIO, DEBUG, "JOY write: TRANS_LO <- %04X", value);
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break;
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case GBA_REG_JOY_TRANS_HI:
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mLOG(GBA_SIO, DEBUG, "JOY write: TRANS_HI <- %04X", value);
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break;
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default:
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mLOG(GBA_SIO, DEBUG, "JOY write: Unknown reg %03X <- %04X", address, value);
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break;
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case GBA_REG_RCNT:
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break;
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}
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break;
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default:
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@ -234,3 +276,53 @@ uint16_t GBASIOWriteRegister(struct GBASIO* sio, uint32_t address, uint16_t valu
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}
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return value;
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}
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int GBASIOJOYSendCommand(struct GBASIODriver* sio, enum GBASIOJOYCommand command, uint8_t* data) {
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switch (command) {
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case JOY_RESET:
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sio->p->p->memory.io[GBA_REG(JOYCNT)] |= JOYCNT_RESET;
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if (sio->p->p->memory.io[GBA_REG(JOYCNT)] & 0x40) {
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GBARaiseIRQ(sio->p->p, GBA_IRQ_SIO, 0);
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}
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// Fall through
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case JOY_POLL:
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data[0] = 0x00;
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data[1] = 0x04;
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data[2] = sio->p->p->memory.io[GBA_REG(JOYSTAT)];
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mLOG(GBA_SIO, DEBUG, "JOY %s: %02X (%02X)", command == JOY_POLL ? "poll" : "reset", data[2], sio->p->p->memory.io[GBA_REG(JOYCNT)]);
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return 3;
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case JOY_RECV:
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sio->p->p->memory.io[GBA_REG(JOYCNT)] |= JOYCNT_RECV;
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sio->p->p->memory.io[GBA_REG(JOYSTAT)] |= JOYSTAT_RECV;
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sio->p->p->memory.io[GBA_REG(JOY_RECV_LO)] = data[0] | (data[1] << 8);
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sio->p->p->memory.io[GBA_REG(JOY_RECV_HI)] = data[2] | (data[3] << 8);
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data[0] = sio->p->p->memory.io[GBA_REG(JOYSTAT)];
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mLOG(GBA_SIO, DEBUG, "JOY recv: %02X (%02X)", data[0], sio->p->p->memory.io[GBA_REG(JOYCNT)]);
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if (sio->p->p->memory.io[GBA_REG(JOYCNT)] & 0x40) {
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GBARaiseIRQ(sio->p->p, GBA_IRQ_SIO, 0);
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}
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return 1;
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case JOY_TRANS:
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data[0] = sio->p->p->memory.io[GBA_REG(JOY_TRANS_LO)];
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data[1] = sio->p->p->memory.io[GBA_REG(JOY_TRANS_LO)] >> 8;
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data[2] = sio->p->p->memory.io[GBA_REG(JOY_TRANS_HI)];
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data[3] = sio->p->p->memory.io[GBA_REG(JOY_TRANS_HI)] >> 8;
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data[4] = sio->p->p->memory.io[GBA_REG(JOYSTAT)];
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sio->p->p->memory.io[GBA_REG(JOYCNT)] |= JOYCNT_TRANS;
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sio->p->p->memory.io[GBA_REG(JOYSTAT)] &= ~JOYSTAT_TRANS;
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mLOG(GBA_SIO, DEBUG, "JOY trans: %02X%02X%02X%02X:%02X (%02X)", data[0], data[1], data[2], data[3], data[4], sio->p->p->memory.io[GBA_REG(JOYCNT)]);
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if (sio->p->p->memory.io[GBA_REG(JOYCNT)] & 0x40) {
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GBARaiseIRQ(sio->p->p, GBA_IRQ_SIO, 0);
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}
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return 5;
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}
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return 0;
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}
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@ -25,16 +25,22 @@ enum {
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static bool GBASIODolphinInit(struct GBASIODriver* driver);
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static bool GBASIODolphinLoad(struct GBASIODriver* driver);
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static bool GBASIODolphinUnload(struct GBASIODriver* driver);
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static bool GBASIODolphinHandlesMode(struct GBASIODriver* driver, enum GBASIOMode mode);
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static int GBASIODolphinConnectedDevices(struct GBASIODriver* driver);
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static void GBASIODolphinProcessEvents(struct mTiming* timing, void* context, uint32_t cyclesLate);
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static int32_t _processCommand(struct GBASIODolphin* dol, uint32_t cyclesLate);
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static void _flush(struct GBASIODolphin* dol);
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void GBASIODolphinCreate(struct GBASIODolphin* dol) {
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GBASIOJOYCreate(&dol->d);
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dol->d.init = GBASIODolphinInit;
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dol->d.load = GBASIODolphinLoad;
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dol->d.unload = GBASIODolphinUnload;
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dol->d.writeRegister = NULL;
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dol->d.setMode = NULL;
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dol->d.handlesMode = GBASIODolphinHandlesMode;
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dol->d.connectedDevices = GBASIODolphinConnectedDevices;
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dol->d.deviceId = NULL;
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dol->event.context = dol;
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dol->event.name = "GB SIO Lockstep";
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dol->event.callback = GBASIODolphinProcessEvents;
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@ -116,6 +122,16 @@ static bool GBASIODolphinUnload(struct GBASIODriver* driver) {
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return true;
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}
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static bool GBASIODolphinHandlesMode(struct GBASIODriver* driver, enum GBASIOMode mode) {
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UNUSED(driver);
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return mode == GBA_SIO_JOYBUS;
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}
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static int GBASIODolphinConnectedDevices(struct GBASIODriver* driver) {
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UNUSED(driver);
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return 1;
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}
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void GBASIODolphinProcessEvents(struct mTiming* timing, void* context, uint32_t cyclesLate) {
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struct GBASIODolphin* dol = context;
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if (SOCKET_FAILED(dol->data)) {
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@ -1,108 +0,0 @@
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/* Copyright (c) 2013-2017 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <mgba/internal/gba/sio.h>
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#include <mgba/internal/gba/gba.h>
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#include <mgba/internal/gba/io.h>
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static uint16_t GBASIOJOYWriteRegister(struct GBASIODriver* sio, uint32_t address, uint16_t value);
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static bool GBASIOJOYHandlesMode(struct GBASIODriver* driver, enum GBASIOMode mode);
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static int GBASIOJOYConnectedDevices(struct GBASIODriver* driver);
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void GBASIOJOYCreate(struct GBASIODriver* sio) {
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sio->init = NULL;
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sio->deinit = NULL;
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sio->load = NULL;
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sio->unload = NULL;
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sio->writeRegister = GBASIOJOYWriteRegister;
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sio->setMode = NULL;
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sio->handlesMode = GBASIOJOYHandlesMode;
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sio->connectedDevices = GBASIOJOYConnectedDevices;
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sio->deviceId = NULL;
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}
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uint16_t GBASIOJOYWriteRegister(struct GBASIODriver* sio, uint32_t address, uint16_t value) {
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switch (address) {
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case GBA_REG_JOYCNT:
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mLOG(GBA_SIO, DEBUG, "JOY write: CNT <- %04X", value);
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return (value & 0x0040) | (sio->p->p->memory.io[GBA_REG(JOYCNT)] & ~(value & 0x7) & ~0x0040);
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case GBA_REG_JOYSTAT:
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mLOG(GBA_SIO, DEBUG, "JOY write: STAT <- %04X", value);
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return (value & 0x0030) | (sio->p->p->memory.io[GBA_REG(JOYSTAT)] & ~0x30);
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case GBA_REG_JOY_TRANS_LO:
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mLOG(GBA_SIO, DEBUG, "JOY write: TRANS_LO <- %04X", value);
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break;
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case GBA_REG_JOY_TRANS_HI:
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mLOG(GBA_SIO, DEBUG, "JOY write: TRANS_HI <- %04X", value);
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break;
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default:
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mLOG(GBA_SIO, DEBUG, "JOY write: Unknown reg %03X <- %04X", address, value);
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// Fall through
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case GBA_REG_RCNT:
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break;
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}
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return value;
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}
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static bool GBASIOJOYHandlesMode(struct GBASIODriver* driver, enum GBASIOMode mode) {
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UNUSED(driver);
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return mode == GBA_SIO_JOYBUS;
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}
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static int GBASIOJOYConnectedDevices(struct GBASIODriver* driver) {
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UNUSED(driver);
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return 1;
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}
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int GBASIOJOYSendCommand(struct GBASIODriver* sio, enum GBASIOJOYCommand command, uint8_t* data) {
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switch (command) {
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case JOY_RESET:
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sio->p->p->memory.io[GBA_REG(JOYCNT)] |= JOYCNT_RESET;
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if (sio->p->p->memory.io[GBA_REG(JOYCNT)] & 0x40) {
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GBARaiseIRQ(sio->p->p, GBA_IRQ_SIO, 0);
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}
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// Fall through
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case JOY_POLL:
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data[0] = 0x00;
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data[1] = 0x04;
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data[2] = sio->p->p->memory.io[GBA_REG(JOYSTAT)];
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mLOG(GBA_SIO, DEBUG, "JOY %s: %02X (%02X)", command == JOY_POLL ? "poll" : "reset", data[2], sio->p->p->memory.io[GBA_REG(JOYCNT)]);
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return 3;
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case JOY_RECV:
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sio->p->p->memory.io[GBA_REG(JOYCNT)] |= JOYCNT_RECV;
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sio->p->p->memory.io[GBA_REG(JOYSTAT)] |= JOYSTAT_RECV;
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sio->p->p->memory.io[GBA_REG(JOY_RECV_LO)] = data[0] | (data[1] << 8);
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sio->p->p->memory.io[GBA_REG(JOY_RECV_HI)] = data[2] | (data[3] << 8);
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data[0] = sio->p->p->memory.io[GBA_REG(JOYSTAT)];
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mLOG(GBA_SIO, DEBUG, "JOY recv: %02X (%02X)", data[0], sio->p->p->memory.io[GBA_REG(JOYCNT)]);
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if (sio->p->p->memory.io[GBA_REG(JOYCNT)] & 0x40) {
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GBARaiseIRQ(sio->p->p, GBA_IRQ_SIO, 0);
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}
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return 1;
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case JOY_TRANS:
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data[0] = sio->p->p->memory.io[GBA_REG(JOY_TRANS_LO)];
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data[1] = sio->p->p->memory.io[GBA_REG(JOY_TRANS_LO)] >> 8;
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data[2] = sio->p->p->memory.io[GBA_REG(JOY_TRANS_HI)];
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data[3] = sio->p->p->memory.io[GBA_REG(JOY_TRANS_HI)] >> 8;
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data[4] = sio->p->p->memory.io[GBA_REG(JOYSTAT)];
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sio->p->p->memory.io[GBA_REG(JOYCNT)] |= JOYCNT_TRANS;
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sio->p->p->memory.io[GBA_REG(JOYSTAT)] &= ~JOYSTAT_TRANS;
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mLOG(GBA_SIO, DEBUG, "JOY trans: %02X%02X%02X%02X:%02X (%02X)", data[0], data[1], data[2], data[3], data[4], sio->p->p->memory.io[GBA_REG(JOYCNT)]);
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if (sio->p->p->memory.io[GBA_REG(JOYCNT)] & 0x40) {
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GBARaiseIRQ(sio->p->p, GBA_IRQ_SIO, 0);
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}
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return 5;
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}
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return 0;
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}
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@ -215,7 +215,7 @@ static bool GBASIOLockstepNodeHandlesMode(struct GBASIODriver* driver, enum GBAS
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static int GBASIOLockstepNodeConnectedDevices(struct GBASIODriver* driver) {
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struct GBASIOLockstepNode* node = (struct GBASIOLockstepNode*) driver;
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int attached = 0;
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int attached = 1;
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switch (node->mode) {
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case GBA_SIO_NORMAL_8:
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