Yoink most of EXIBios.c

ty prime decomp - couple funcs to adjust bc P2 version is different
projectPiki · Sep 26, 2023 · 5ef1017 · 5ef1017
1 parent 7559314
commit 5ef1017
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Showing 4 changed files with 684 additions and 1,646 deletions.
diff --git a/include/Dolphin/OS/OSExpansion.h b/include/Dolphin/OS/OSExpansion.h
@@ -19,6 +19,8 @@ s32 EXIProbeEx(s32 channel);
 s32 EXIGetType(s32 channel, u32 dev, u32* type);
 char* EXIGetTypeString(u32 type);
 
+u32 __OSGetDIConfig(void);
+
 //////////////////////////////////
 
 /////////// EXI DEFINES //////////

diff --git a/include/Dolphin/OS/OSUtil.h b/include/Dolphin/OS/OSUtil.h
@@ -91,6 +91,9 @@ void OSTicksToCalendarTime(OSTime ticks, OSCalendarTime* timeDate);
 #define OSCachedToUncached(caddr)    ((void*)((u8*)(caddr) + (OS_BASE_UNCACHED - OS_BASE_CACHED)))
 #define OSUncachedToCached(ucaddr)   ((void*)((u8*)(ucaddr) - (OS_BASE_UNCACHED - OS_BASE_CACHED)))
 
+// Other useful addresses.
+vu16 __OSDeviceCode AT_ADDRESS(OS_BASE_CACHED | 0x30E6);
+
 //////////////////////////////////
 
 #ifdef __cplusplus

diff --git a/include/Dolphin/exi.h b/include/Dolphin/exi.h
@@ -3,14 +3,54 @@
 
 #include "types.h"
 #include "Dolphin/os.h"
+#include "Dolphin/hw_regs.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif // ifdef __cplusplus
 
-#define EXI_TX    0x800400u
-#define EXI_MAGIC 0xa5ff005a
+/////////// EXI DEFINES //////////
+// Useful numbers.
+#define EXI_TX       0x800400u
+#define EXI_MAGIC    0xa5ff005a
+#define EXI_MAX_DEV  3
+#define EXI_MAX_CHAN 3
+#define EXI_REG_MAX  5
 
+// Useful macros.
+#define EXI_0CR(tstart, dma, rw, tlen) ((((u32)(tstart)) << 0) | (((u32)(dma)) << 1) | (((u32)(rw)) << 2) | (((u32)(tlen)) << 4))
+
+#define EXIREG(chan, idx) (__EXIRegs[((chan)*EXI_REG_MAX) + (idx)])
+
+#define EXI_CPR_CS(x)  ((1u << (x)) << 7)
+#define EXI_CPR_CLK(x) ((x) << 4)
+
+s32 __EXIProbeStartTime[2] AT_ADDRESS(OS_BASE_CACHED | 0x30C0);
+
+//////////////////////////////////
+
+/////////// EXI STRUCTS //////////
+// Struct for handling expansion information (size 0x40).
+typedef struct EXIControl {
+	EXICallback exiCallback; // _00
+	EXICallback tcCallback;  // _04
+	EXICallback extCallback; // _08
+	vu32 state;              // _0C
+	int immLen;              // _10
+	u8* immBuf;              // _14
+	u32 dev;                 // _18
+	u32 id;                  // _1C
+	s32 idTime;              // _20
+	int items;               // _24
+	struct {
+		u32 dev;
+		EXICallback callback;
+	} queue[EXI_MAX_DEV]; // _28
+} EXIControl;
+
+//////////////////////////////////
+
+////////// EXI FUNCTIONS /////////
 void EXIInit();
 
 BOOL EXIImm(s32 channel, void* buffer, s32 length, u32 type, EXICallback callback);
@@ -23,13 +63,15 @@ BOOL EXIAttach(s32 channel, EXICallback callback);
 BOOL EXIDetach(s32 channel);
 BOOL EXISelect(s32 channel, u32 device, u32 frequency);
 BOOL EXIDeselect(s32 channel);
-// sic
+
 void EXIIntrruptHandler(__OSInterrupt interrupt, OSContext* context);
 BOOL EXILock(s32 channel, u32 device, EXICallback callback);
 BOOL EXIUnlock(s32 channel);
 u32 EXIGetState(s32 channel);
 s32 EXIGetID(s32 channel, u32 device, u32* id);
 
+//////////////////////////////////
+
 #ifdef __cplusplus
 };
 #endif // ifdef __cplusplus