Initial commit

arm9/source/patches/platform/SdReadDmaPatchCode.h

@@ -0,0 +1,28 @@
+#pragma once
+#include "../PatchCode.h"
+
+/// @brief Abstract base class for patch code implementing dma SD reads
+class SdReadDmaPatchCode : public PatchCode
+{
+protected:
+    SdReadDmaPatchCode(const void* code, u32 size, PatchHeap& patchHeap)
+        : PatchCode(code, size, patchHeap) { }
+
+public:
+    /// @brief Pointer to a function for reading a single SD sector using the given dmaChannel.
+    ///        In first sector of batch read, previousSrcSector will be 0.
+    ///        On further reads previousSrcSector will contains the previous srcSector
+    ///        which can be used to continue a sequential read.
+    typedef void (*SdReadDmaFunc)(u32 srcSector, u32 previousSrcSector, u32 dmaChannel, void* dst);
+
+    /// @brief Pointer to a function for finishing a batch of dma reads.
+    typedef void (*SdReadDmaFinishFunc)(void);
+
+    /// @brief Gets a pointer to the dma SD read function in the patch code.
+    /// @return The pointer to the dma SD read function.
+    virtual const SdReadDmaFunc GetSdReadDmaFunction() const = 0;
+
+    /// @brief Gets a pointer to the dma SD read finish function in the patch code.
+    /// @return The pointer to the dma SD read finish function.
+    virtual const SdReadDmaFinishFunc GetSdReadDmaFinishFunction() const = 0;
+};