mirror of https://github.com/PrimeDecomp/prime.git
692 lines
16 KiB
C
692 lines
16 KiB
C
#include "dolphin/os.h"
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#include "dolphin/hw_regs.h"
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#pragma scheduling off
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static const char* __EXIVersion =
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"<< Dolphin SDK - EXI\trelease build: Sep 5 2002 05:33:04 (0x2301) >>";
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#define MAX_DEV 3
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#define MAX_CHAN 3
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#define REG_MAX 5
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#define REG(chan, idx) (__EXIRegs[((chan)*REG_MAX) + (idx)])
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#define STATE_IDLE 0x00
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#define STATE_DMA 0x01
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#define STATE_IMM 0x02
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#define STATE_BUSY (STATE_DMA | STATE_IMM)
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#define STATE_SELECTED 0x04
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#define STATE_ATTACHED 0x08
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#define STATE_LOCKED 0x10
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#define EXI_0CR(tstart, dma, rw, tlen) \
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((((u32)(tstart)) << 0) | (((u32)(dma)) << 1) | (((u32)(rw)) << 2) | (((u32)(tlen)) << 4))
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#define CPR_CS(x) ((1u << (x)) << 7)
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#define CPR_CLK(x) ((x) << 4)
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typedef struct EXIControl {
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EXICallback exiCallback;
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EXICallback tcCallback;
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EXICallback extCallback;
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vu32 state;
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int immLen;
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u8* immBuf;
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u32 dev;
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u32 id;
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s32 idTime;
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int items;
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struct {
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u32 dev;
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EXICallback callback;
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} queue[MAX_DEV];
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} EXIControl;
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static EXIControl Ecb[MAX_CHAN];
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s32 __EXIProbeStartTime[2] : (OS_BASE_CACHED | 0x30C0);
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static void SetExiInterruptMask(s32 chan, EXIControl* exi) {
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EXIControl* exi2;
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exi2 = &Ecb[2];
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switch (chan) {
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case 0:
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if ((exi->exiCallback == 0 && exi2->exiCallback == 0) || (exi->state & STATE_LOCKED)) {
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__OSMaskInterrupts(OS_INTERRUPTMASK_EXI_0_EXI | OS_INTERRUPTMASK_EXI_2_EXI);
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} else {
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__OSUnmaskInterrupts(OS_INTERRUPTMASK_EXI_0_EXI | OS_INTERRUPTMASK_EXI_2_EXI);
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}
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break;
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case 1:
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if (exi->exiCallback == 0 || (exi->state & STATE_LOCKED)) {
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__OSMaskInterrupts(OS_INTERRUPTMASK_EXI_1_EXI);
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} else {
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__OSUnmaskInterrupts(OS_INTERRUPTMASK_EXI_1_EXI);
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}
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break;
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case 2:
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if (__OSGetInterruptHandler(__OS_INTERRUPT_PI_DEBUG) == 0 || (exi->state & STATE_LOCKED)) {
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__OSMaskInterrupts(OS_INTERRUPTMASK_PI_DEBUG);
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} else {
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__OSUnmaskInterrupts(OS_INTERRUPTMASK_PI_DEBUG);
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}
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break;
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}
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}
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static void CompleteTransfer(s32 chan) {
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EXIControl* exi = &Ecb[chan];
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u8* buf;
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u32 data;
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int i;
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int len;
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if (exi->state & STATE_BUSY) {
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if ((exi->state & STATE_IMM) && (len = exi->immLen)) {
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buf = exi->immBuf;
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data = REG(chan, 4);
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for (i = 0; i < len; i++) {
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*buf++ = (u8)((data >> ((3 - i) * 8)) & 0xff);
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}
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}
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exi->state &= ~STATE_BUSY;
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}
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}
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BOOL EXIImm(s32 chan, void* buf, s32 len, u32 type, EXICallback callback) {
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EXIControl* exi = &Ecb[chan];
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BOOL enabled;
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enabled = OSDisableInterrupts();
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if ((exi->state & STATE_BUSY) || !(exi->state & STATE_SELECTED)) {
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OSRestoreInterrupts(enabled);
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return FALSE;
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}
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exi->tcCallback = callback;
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if (exi->tcCallback) {
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EXIClearInterrupts(chan, FALSE, TRUE, FALSE);
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__OSUnmaskInterrupts(OS_INTERRUPTMASK_EXI_0_TC >> (3 * chan));
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}
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exi->state |= STATE_IMM;
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if (type != EXI_READ) {
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u32 data;
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int i;
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data = 0;
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for (i = 0; i < len; i++) {
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data |= ((u8*)buf)[i] << ((3 - i) * 8);
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}
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REG(chan, 4) = data;
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}
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exi->immBuf = buf;
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exi->immLen = (type != EXI_WRITE) ? len : 0;
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REG(chan, 3) = EXI_0CR(1, 0, type, len - 1);
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OSRestoreInterrupts(enabled);
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return TRUE;
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}
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BOOL EXIImmEx(s32 chan, void* buf, s32 len, u32 mode) {
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s32 xLen;
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while (len) {
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xLen = (len < 4) ? len : 4;
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if (!EXIImm(chan, buf, xLen, mode, NULL)) {
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return FALSE;
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}
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if (!EXISync(chan)) {
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return FALSE;
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}
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(u8*)buf += xLen;
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len -= xLen;
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}
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return TRUE;
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}
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BOOL EXIDma(s32 chan, void* buf, s32 len, u32 type, EXICallback callback) {
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EXIControl* exi = &Ecb[chan];
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BOOL enabled;
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enabled = OSDisableInterrupts();
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if ((exi->state & STATE_BUSY) || !(exi->state & STATE_SELECTED)) {
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OSRestoreInterrupts(enabled);
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return FALSE;
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}
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exi->tcCallback = callback;
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if (exi->tcCallback) {
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EXIClearInterrupts(chan, FALSE, TRUE, FALSE);
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__OSUnmaskInterrupts(OS_INTERRUPTMASK_EXI_0_TC >> (3 * chan));
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}
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exi->state |= STATE_DMA;
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REG(chan, 1) = (u32)buf & 0x3ffffe0;
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REG(chan, 2) = (u32)len;
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REG(chan, 3) = EXI_0CR(1, 1, type, 0);
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OSRestoreInterrupts(enabled);
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return TRUE;
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}
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extern u32 __OSGetDIConfig(void);
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vu16 __OSDeviceCode : (OS_BASE_CACHED | 0x30E6);
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BOOL EXISync(s32 chan) {
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EXIControl* exi = &Ecb[chan];
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BOOL rc = FALSE;
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BOOL enabled;
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while (exi->state & STATE_SELECTED) {
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if (((REG(chan, 3) & 1) >> 0) == 0) {
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enabled = OSDisableInterrupts();
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if (exi->state & STATE_SELECTED) {
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CompleteTransfer(chan);
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if (__OSGetDIConfig() != 0xff || exi->immLen != 4 ||
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(REG(chan, 0) & 0x00000070) != (EXI_FREQ_1M << 4) ||
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(REG(chan, 4) != EXI_USB_ADAPTER && REG(chan, 4) != EXI_IS_VIEWER &&
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REG(chan, 4) != 0x04220001) ||
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__OSDeviceCode == 0x8200) {
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rc = TRUE;
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}
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}
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OSRestoreInterrupts(enabled);
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break;
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}
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}
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return rc;
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}
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u32 EXIClearInterrupts(s32 chan, BOOL exi, BOOL tc, BOOL ext) {
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u32 cpr;
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u32 prev;
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prev = cpr = REG(chan, 0);
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cpr &= 0x7f5;
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if (exi)
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cpr |= 2;
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if (tc)
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cpr |= 8;
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if (ext)
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cpr |= 0x800;
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REG(chan, 0) = cpr;
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return prev;
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}
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EXICallback EXISetExiCallback(s32 chan, EXICallback exiCallback) {
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EXIControl* exi = &Ecb[chan];
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EXICallback prev;
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BOOL enabled;
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enabled = OSDisableInterrupts();
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prev = exi->exiCallback;
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exi->exiCallback = exiCallback;
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if (chan != 2) {
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SetExiInterruptMask(chan, exi);
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} else {
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SetExiInterruptMask(0, &Ecb[0]);
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}
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OSRestoreInterrupts(enabled);
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return prev;
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}
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void EXIProbeReset(void) {
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__EXIProbeStartTime[0] = __EXIProbeStartTime[1] = 0;
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Ecb[0].idTime = Ecb[1].idTime = 0;
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__EXIProbe(0);
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__EXIProbe(1);
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}
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static BOOL __EXIProbe(s32 chan) {
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EXIControl* exi = &Ecb[chan];
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BOOL enabled;
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BOOL rc;
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u32 cpr;
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s32 t;
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if (chan == 2) {
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return TRUE;
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}
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rc = TRUE;
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enabled = OSDisableInterrupts();
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cpr = REG(chan, 0);
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if (!(exi->state & EXI_STATE_ATTACHED)) {
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if (cpr & 0x00000800) {
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EXIClearInterrupts(chan, FALSE, FALSE, TRUE);
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__EXIProbeStartTime[chan] = exi->idTime = 0;
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}
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if (cpr & 0x00001000) {
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t = (s32)(OSTicksToMilliseconds(OSGetTime()) / 100) + 1;
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if (__EXIProbeStartTime[chan] == 0) {
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__EXIProbeStartTime[chan] = t;
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}
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if (t - __EXIProbeStartTime[chan] < 300 / 100) {
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rc = FALSE;
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}
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} else {
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__EXIProbeStartTime[chan] = exi->idTime = 0;
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rc = FALSE;
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}
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} else if (!(cpr & 0x00001000) || (cpr & 0x00000800)) {
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__EXIProbeStartTime[chan] = exi->idTime = 0;
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rc = FALSE;
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}
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OSRestoreInterrupts(enabled);
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return rc;
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}
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BOOL EXIProbe(s32 chan) {
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EXIControl* exi = &Ecb[chan];
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BOOL rc;
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u32 id;
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rc = __EXIProbe(chan);
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if (rc && exi->idTime == 0) {
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rc = EXIGetID(chan, 0, &id) ? TRUE : FALSE;
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}
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return rc;
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}
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s32 EXIProbeEx(s32 chan) {
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if (EXIProbe(chan)) {
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return 1;
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} else if (__EXIProbeStartTime[chan] != 0) {
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return 0;
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} else {
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return -1;
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}
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}
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static BOOL __EXIAttach(s32 chan, EXICallback extCallback) {
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EXIControl* exi = &Ecb[chan];
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BOOL enabled;
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enabled = OSDisableInterrupts();
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if ((exi->state & EXI_STATE_ATTACHED) || __EXIProbe(chan) == FALSE) {
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OSRestoreInterrupts(enabled);
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return FALSE;
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}
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EXIClearInterrupts(chan, TRUE, FALSE, FALSE);
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exi->extCallback = extCallback;
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__OSUnmaskInterrupts(OS_INTERRUPTMASK_EXI_0_EXT >> (3 * chan));
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exi->state |= STATE_ATTACHED;
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OSRestoreInterrupts(enabled);
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return TRUE;
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}
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BOOL EXIAttach(s32 chan, EXICallback extCallback) {
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EXIControl* exi = &Ecb[chan];
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BOOL enabled;
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BOOL rc;
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EXIProbe(chan);
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enabled = OSDisableInterrupts();
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if (exi->idTime == 0) {
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OSRestoreInterrupts(enabled);
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return FALSE;
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}
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rc = __EXIAttach(chan, extCallback);
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OSRestoreInterrupts(enabled);
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return rc;
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}
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BOOL EXIDetach(s32 chan) {
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EXIControl* exi = &Ecb[chan];
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BOOL enabled;
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enabled = OSDisableInterrupts();
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if (!(exi->state & STATE_ATTACHED)) {
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OSRestoreInterrupts(enabled);
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return TRUE;
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}
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if ((exi->state & STATE_LOCKED) && exi->dev == 0) {
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OSRestoreInterrupts(enabled);
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return FALSE;
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}
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exi->state &= ~STATE_ATTACHED;
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__OSMaskInterrupts((OS_INTERRUPTMASK_EXI_0_EXT | OS_INTERRUPTMASK_EXI_0_EXI) >> (3 * chan));
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OSRestoreInterrupts(enabled);
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return TRUE;
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}
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BOOL EXISelect(s32 chan, u32 dev, u32 freq) {
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EXIControl* exi = &Ecb[chan];
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u32 cpr;
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BOOL enabled;
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enabled = OSDisableInterrupts();
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if ((exi->state & STATE_SELECTED) ||
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chan != 2 && (dev == 0 && !(exi->state & STATE_ATTACHED) && !__EXIProbe(chan) ||
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!(exi->state & STATE_LOCKED) || (exi->dev != dev))) {
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OSRestoreInterrupts(enabled);
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return FALSE;
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}
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exi->state |= STATE_SELECTED;
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cpr = REG(chan, 0);
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cpr &= 0x405;
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cpr |= CPR_CS(dev) | CPR_CLK(freq);
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REG(chan, 0) = cpr;
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if (exi->state & STATE_ATTACHED) {
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switch (chan) {
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case 0:
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__OSMaskInterrupts(OS_INTERRUPTMASK_EXI_0_EXT);
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break;
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case 1:
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__OSMaskInterrupts(OS_INTERRUPTMASK_EXI_1_EXT);
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break;
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}
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}
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OSRestoreInterrupts(enabled);
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return TRUE;
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}
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BOOL EXIDeselect(s32 chan) {
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EXIControl* exi = &Ecb[chan];
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u32 cpr;
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BOOL enabled;
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enabled = OSDisableInterrupts();
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if (!(exi->state & STATE_SELECTED)) {
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OSRestoreInterrupts(enabled);
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return FALSE;
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}
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exi->state &= ~STATE_SELECTED;
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cpr = REG(chan, 0);
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REG(chan, 0) = cpr & 0x405;
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if (exi->state & STATE_ATTACHED) {
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switch (chan) {
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case 0:
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__OSUnmaskInterrupts(OS_INTERRUPTMASK_EXI_0_EXT);
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break;
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case 1:
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__OSUnmaskInterrupts(OS_INTERRUPTMASK_EXI_1_EXT);
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break;
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}
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}
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OSRestoreInterrupts(enabled);
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if (chan != 2 && (cpr & CPR_CS(0))) {
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return __EXIProbe(chan) ? TRUE : FALSE;
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}
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return TRUE;
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}
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static void EXIIntrruptHandler(__OSInterrupt interrupt, OSContext* context) {
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s32 chan;
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EXIControl* exi;
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EXICallback callback;
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chan = (interrupt - __OS_INTERRUPT_EXI_0_EXI) / 3;
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exi = &Ecb[chan];
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EXIClearInterrupts(chan, TRUE, FALSE, FALSE);
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callback = exi->exiCallback;
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if (callback) {
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OSContext exceptionContext;
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OSClearContext(&exceptionContext);
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OSSetCurrentContext(&exceptionContext);
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callback(chan, context);
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OSClearContext(&exceptionContext);
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OSSetCurrentContext(context);
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}
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}
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static void TCIntrruptHandler(__OSInterrupt interrupt, OSContext* context) {
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OSContext exceptionContext;
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s32 chan;
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EXIControl* exi;
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EXICallback callback;
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chan = (interrupt - __OS_INTERRUPT_EXI_0_TC) / 3;
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exi = &Ecb[chan];
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__OSMaskInterrupts(OS_INTERRUPTMASK(interrupt));
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EXIClearInterrupts(chan, FALSE, TRUE, FALSE);
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callback = exi->tcCallback;
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if (callback) {
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exi->tcCallback = 0;
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CompleteTransfer(chan);
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OSClearContext(&exceptionContext);
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OSSetCurrentContext(&exceptionContext);
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callback(chan, context);
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OSClearContext(&exceptionContext);
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OSSetCurrentContext(context);
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}
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}
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static void EXTIntrruptHandler(__OSInterrupt interrupt, OSContext* context) {
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s32 chan;
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EXIControl* exi;
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EXICallback callback;
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chan = (interrupt - __OS_INTERRUPT_EXI_0_EXT) / 3;
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__OSMaskInterrupts((OS_INTERRUPTMASK_EXI_0_EXT | OS_INTERRUPTMASK_EXI_0_EXI) >> (3 * chan));
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exi = &Ecb[chan];
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callback = exi->extCallback;
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exi->state &= ~STATE_ATTACHED;
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if (callback) {
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OSContext exceptionContext;
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OSClearContext(&exceptionContext);
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OSSetCurrentContext(&exceptionContext);
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exi->extCallback = 0;
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callback(chan, context);
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OSClearContext(&exceptionContext);
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OSSetCurrentContext(context);
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}
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}
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void EXIInit(void) {
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OSRegisterVersion(__EXIVersion);
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__OSMaskInterrupts(OS_INTERRUPTMASK_EXI_0_EXI | OS_INTERRUPTMASK_EXI_0_TC |
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OS_INTERRUPTMASK_EXI_0_EXT | OS_INTERRUPTMASK_EXI_1_EXI |
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OS_INTERRUPTMASK_EXI_1_TC | OS_INTERRUPTMASK_EXI_1_EXT |
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OS_INTERRUPTMASK_EXI_2_EXI | OS_INTERRUPTMASK_EXI_2_TC);
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REG(0, 0) = 0;
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REG(1, 0) = 0;
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REG(2, 0) = 0;
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REG(0, 0) = 0x00002000;
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__OSSetInterruptHandler(__OS_INTERRUPT_EXI_0_EXI, EXIIntrruptHandler);
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__OSSetInterruptHandler(__OS_INTERRUPT_EXI_0_TC, TCIntrruptHandler);
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__OSSetInterruptHandler(__OS_INTERRUPT_EXI_0_EXT, EXTIntrruptHandler);
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__OSSetInterruptHandler(__OS_INTERRUPT_EXI_1_EXI, EXIIntrruptHandler);
|
|
__OSSetInterruptHandler(__OS_INTERRUPT_EXI_1_TC, TCIntrruptHandler);
|
|
__OSSetInterruptHandler(__OS_INTERRUPT_EXI_1_EXT, EXTIntrruptHandler);
|
|
__OSSetInterruptHandler(__OS_INTERRUPT_EXI_2_EXI, EXIIntrruptHandler);
|
|
__OSSetInterruptHandler(__OS_INTERRUPT_EXI_2_TC, TCIntrruptHandler);
|
|
|
|
if ((OSGetConsoleType() & 0x10000000) != 0) {
|
|
__EXIProbeStartTime[0] = __EXIProbeStartTime[1] = 0;
|
|
Ecb[0].idTime = Ecb[1].idTime = 0;
|
|
__EXIProbe(0);
|
|
__EXIProbe(1);
|
|
}
|
|
}
|
|
|
|
BOOL EXILock(s32 chan, u32 dev, EXICallback unlockedCallback) {
|
|
EXIControl* exi = &Ecb[chan];
|
|
BOOL enabled;
|
|
int i;
|
|
|
|
enabled = OSDisableInterrupts();
|
|
if (exi->state & STATE_LOCKED) {
|
|
if (unlockedCallback) {
|
|
for (i = 0; i < exi->items; i++) {
|
|
if (exi->queue[i].dev == dev) {
|
|
OSRestoreInterrupts(enabled);
|
|
return FALSE;
|
|
}
|
|
}
|
|
exi->queue[exi->items].callback = unlockedCallback;
|
|
exi->queue[exi->items].dev = dev;
|
|
exi->items++;
|
|
}
|
|
OSRestoreInterrupts(enabled);
|
|
return FALSE;
|
|
}
|
|
|
|
exi->state |= STATE_LOCKED;
|
|
exi->dev = dev;
|
|
SetExiInterruptMask(chan, exi);
|
|
|
|
OSRestoreInterrupts(enabled);
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL EXIUnlock(s32 chan) {
|
|
EXIControl* exi = &Ecb[chan];
|
|
BOOL enabled;
|
|
EXICallback unlockedCallback;
|
|
|
|
enabled = OSDisableInterrupts();
|
|
if (!(exi->state & STATE_LOCKED)) {
|
|
OSRestoreInterrupts(enabled);
|
|
return FALSE;
|
|
}
|
|
exi->state &= ~STATE_LOCKED;
|
|
SetExiInterruptMask(chan, exi);
|
|
|
|
if (0 < exi->items) {
|
|
unlockedCallback = exi->queue[0].callback;
|
|
if (0 < --exi->items) {
|
|
memmove(&exi->queue[0], &exi->queue[1], sizeof(exi->queue[0]) * exi->items);
|
|
}
|
|
unlockedCallback(chan, 0);
|
|
}
|
|
|
|
OSRestoreInterrupts(enabled);
|
|
return TRUE;
|
|
}
|
|
|
|
u32 EXIGetState(s32 chan) {
|
|
EXIControl* exi = &Ecb[chan];
|
|
|
|
return (u32)exi->state;
|
|
}
|
|
|
|
static void UnlockedHandler(s32 chan, OSContext* context) {
|
|
u32 id;
|
|
|
|
EXIGetID(chan, 0, &id);
|
|
}
|
|
|
|
s32 EXIGetID(s32 chan, u32 dev, u32* id) {
|
|
EXIControl* exi = &Ecb[chan];
|
|
BOOL err;
|
|
u32 cmd;
|
|
s32 startTime;
|
|
BOOL enabled;
|
|
|
|
if (chan < 2 && dev == 0) {
|
|
if (!__EXIProbe(chan)) {
|
|
return 0;
|
|
}
|
|
|
|
if (exi->idTime == __EXIProbeStartTime[chan]) {
|
|
*id = exi->id;
|
|
return exi->idTime;
|
|
}
|
|
|
|
if (!__EXIAttach(chan, NULL)) {
|
|
return 0;
|
|
}
|
|
|
|
startTime = __EXIProbeStartTime[chan];
|
|
}
|
|
|
|
err = !EXILock(chan, dev, (chan < 2 && dev == 0) ? UnlockedHandler : NULL);
|
|
if (!err) {
|
|
err = !EXISelect(chan, dev, EXI_FREQ_1M);
|
|
if (!err) {
|
|
cmd = 0;
|
|
err |= !EXIImm(chan, &cmd, 2, EXI_WRITE, NULL);
|
|
err |= !EXISync(chan);
|
|
err |= !EXIImm(chan, id, 4, EXI_READ, NULL);
|
|
err |= !EXISync(chan);
|
|
err |= !EXIDeselect(chan);
|
|
}
|
|
EXIUnlock(chan);
|
|
}
|
|
|
|
if (chan < 2 && dev == 0) {
|
|
EXIDetach(chan);
|
|
enabled = OSDisableInterrupts();
|
|
err |= (startTime != __EXIProbeStartTime[chan]);
|
|
if (!err) {
|
|
exi->id = *id;
|
|
exi->idTime = startTime;
|
|
}
|
|
OSRestoreInterrupts(enabled);
|
|
|
|
return err ? 0 : exi->idTime;
|
|
}
|
|
|
|
return err ? 0 : !0;
|
|
}
|
|
|
|
char* EXIGetTypeString(u32 type) {
|
|
switch (type) {
|
|
case EXI_MEMORY_CARD_59:
|
|
return "Memory Card 59";
|
|
case EXI_MEMORY_CARD_123:
|
|
return "Memory Card 123";
|
|
case EXI_MEMORY_CARD_251:
|
|
return "Memory Card 251";
|
|
case EXI_MEMORY_CARD_507:
|
|
return "Memory Card 507";
|
|
case EXI_USB_ADAPTER:
|
|
return "USB Adapter";
|
|
case 0x80000000 | EXI_MEMORY_CARD_59:
|
|
case 0x80000000 | EXI_MEMORY_CARD_123:
|
|
case 0x80000000 | EXI_MEMORY_CARD_251:
|
|
case 0x80000000 | EXI_MEMORY_CARD_507:
|
|
return "Net Card";
|
|
case EXI_ETHER_VIEWER:
|
|
return "Artist Ether";
|
|
case EXI_STREAM_HANGER:
|
|
return "Stream Hanger";
|
|
case EXI_IS_VIEWER:
|
|
return "IS Viewer";
|
|
}
|
|
}
|
|
|
|
#pragma scheduling reset
|