From 9fa0a7f1da1b70bee995f53c6c96c43189018772 Mon Sep 17 00:00:00 2001
From: mrb0nk500 <b0nk@b0nk.xyz>
Date: Wed, 1 Feb 2023 18:45:02 -0400
Subject: global: Import Dolphin SDK

This version comes from the Metroid Prime decompilation project.
https://github.com/PrimeDecomp/prime
---
 src/Dolphin/ar/arq.c | 170 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 170 insertions(+)
 create mode 100644 src/Dolphin/ar/arq.c

(limited to 'src/Dolphin/ar/arq.c')

diff --git a/src/Dolphin/ar/arq.c b/src/Dolphin/ar/arq.c
new file mode 100644
index 0000000..d157463
--- /dev/null
+++ b/src/Dolphin/ar/arq.c
@@ -0,0 +1,170 @@
+#include "dolphin/arq.h"
+#include "dolphin/os.h"
+
+const char* __ARQVersion = "<< Dolphin SDK - ARQ\trelease build: Sep  5 2002 05:34:29 (0x2301) >>";
+static ARQRequest* __ARQRequestQueueHi;
+static ARQRequest* __ARQRequestTailHi;
+static ARQRequest* __ARQRequestQueueLo;
+static ARQRequest* __ARQRequestTailLo;
+static ARQRequest* __ARQRequestPendingHi;
+static ARQRequest* __ARQRequestPendingLo;
+static ARQCallback __ARQCallbackHi;
+static ARQCallback __ARQCallbackLo;
+static u32 __ARQChunkSize;
+
+static volatile BOOL __ARQ_init_flag = FALSE;
+
+void __ARQPopTaskQueueHi(void);
+void __ARQServiceQueueLo(void);
+void __ARQCallbackHack(void);
+void __ARQInterruptServiceRoutine(void);
+void __ARQInitTempQueue(void);
+void __ARQPushTempQueue(ARQRequest* task);
+
+void __ARQPopTaskQueueHi(void) {
+
+  if (__ARQRequestQueueHi) {
+    if (__ARQRequestQueueHi->type == ARQ_TYPE_MRAM_TO_ARAM) {
+      ARStartDMA(__ARQRequestQueueHi->type, __ARQRequestQueueHi->source, __ARQRequestQueueHi->dest,
+                 __ARQRequestQueueHi->length);
+    } else {
+      ARStartDMA(__ARQRequestQueueHi->type, __ARQRequestQueueHi->dest, __ARQRequestQueueHi->source,
+                 __ARQRequestQueueHi->length);
+    }
+
+    __ARQCallbackHi = __ARQRequestQueueHi->callback;
+
+    __ARQRequestPendingHi = __ARQRequestQueueHi;
+
+    __ARQRequestQueueHi = __ARQRequestQueueHi->next;
+  }
+}
+
+void __ARQServiceQueueLo(void) {
+
+  if ((__ARQRequestPendingLo == NULL) && (__ARQRequestQueueLo)) {
+    __ARQRequestPendingLo = __ARQRequestQueueLo;
+
+    __ARQRequestQueueLo = __ARQRequestQueueLo->next;
+  }
+
+  if (__ARQRequestPendingLo) {
+    if (__ARQRequestPendingLo->length <= __ARQChunkSize) {
+      if (__ARQRequestPendingLo->type == ARQ_TYPE_MRAM_TO_ARAM)
+        ARStartDMA(__ARQRequestPendingLo->type, __ARQRequestPendingLo->source,
+                   __ARQRequestPendingLo->dest, __ARQRequestPendingLo->length);
+      else
+        ARStartDMA(__ARQRequestPendingLo->type, __ARQRequestPendingLo->dest,
+                   __ARQRequestPendingLo->source, __ARQRequestPendingLo->length);
+
+      __ARQCallbackLo = __ARQRequestPendingLo->callback;
+    } else {
+      if (__ARQRequestPendingLo->type == ARQ_TYPE_MRAM_TO_ARAM)
+        ARStartDMA(__ARQRequestPendingLo->type, __ARQRequestPendingLo->source,
+                   __ARQRequestPendingLo->dest, __ARQChunkSize);
+      else
+        ARStartDMA(__ARQRequestPendingLo->type, __ARQRequestPendingLo->dest,
+                   __ARQRequestPendingLo->source, __ARQChunkSize);
+    }
+
+    __ARQRequestPendingLo->length -= __ARQChunkSize;
+    __ARQRequestPendingLo->source += __ARQChunkSize;
+    __ARQRequestPendingLo->dest += __ARQChunkSize;
+  }
+}
+void __ARQCallbackHack(void) { return; }
+
+void __ARQInterruptServiceRoutine(void) {
+
+  if (__ARQCallbackHi) {
+    (*__ARQCallbackHi)((u32)__ARQRequestPendingHi);
+    __ARQRequestPendingHi = NULL;
+    __ARQCallbackHi = NULL;
+  }
+
+  else if (__ARQCallbackLo) {
+    (*__ARQCallbackLo)((u32)__ARQRequestPendingLo);
+    __ARQRequestPendingLo = NULL;
+    __ARQCallbackLo = NULL;
+  }
+
+  __ARQPopTaskQueueHi();
+
+  if (__ARQRequestPendingHi == NULL)
+    __ARQServiceQueueLo();
+}
+
+void ARQInit(void) {
+
+  if (TRUE == __ARQ_init_flag) {
+    return;
+  }
+
+  OSRegisterVersion(__ARQVersion);
+  __ARQRequestQueueHi = __ARQRequestQueueLo = NULL;
+  __ARQChunkSize = ARQ_CHUNK_SIZE_DEFAULT;
+  ARRegisterDMACallback(&__ARQInterruptServiceRoutine);
+  __ARQRequestPendingHi = NULL;
+  __ARQRequestPendingLo = NULL;
+  __ARQCallbackHi = NULL;
+  __ARQCallbackLo = NULL;
+  __ARQ_init_flag = TRUE;
+}
+
+void ARQPostRequest(ARQRequest* request, u32 owner, u32 type, u32 priority, u32 source, u32 dest,
+                    u32 length, ARQCallback callback) {
+
+  BOOL enabled;
+
+  request->next = NULL;
+  request->owner = owner;
+  request->type = type;
+  request->source = source;
+  request->dest = dest;
+  request->length = length;
+
+  if (callback) {
+    request->callback = callback;
+  } else {
+    request->callback = (ARQCallback)&__ARQCallbackHack;
+  }
+
+  enabled = OSDisableInterrupts();
+
+  switch (priority) {
+  case ARQ_PRIORITY_LOW:
+
+    if (__ARQRequestQueueLo) {
+      __ARQRequestTailLo->next = request;
+    } else {
+      __ARQRequestQueueLo = request;
+    }
+    __ARQRequestTailLo = request;
+
+    break;
+
+  case ARQ_PRIORITY_HIGH:
+
+    if (__ARQRequestQueueHi) {
+      __ARQRequestTailHi->next = request;
+    } else {
+      __ARQRequestQueueHi = request;
+    }
+
+    __ARQRequestTailHi = request;
+
+    break;
+  }
+
+  if ((__ARQRequestPendingHi == NULL) && (__ARQRequestPendingLo == NULL)) {
+    __ARQPopTaskQueueHi();
+
+    if (__ARQRequestPendingHi == NULL) {
+      __ARQServiceQueueLo();
+    }
+  }
+
+  OSRestoreInterrupts(enabled);
+}
+
+u32 ARQGetChunkSize(void) { return __ARQChunkSize; }
-- 
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