1 files changed, 142 insertions, 0 deletions
diff --git a/sdk-modifications/include/ds2_dma.h b/sdk-modifications/include/ds2_dma.h
new file mode 100644
index 0000000..9a306cf
--- /dev/null
+++ b/sdk-modifications/include/ds2_dma.h
@@ -0,0 +1,142 @@
+#ifndef _DS2_DMA_H__
+#define _DS2_DMA_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+#define MAX_DMA_NUM 6  /* max 6 channels */
+
+
+// DMA request source register
+#define DMAC_DRSR_RS_BIT    0
+#define DMAC_DRSR_RS_AUTO (8 << DMAC_DRSR_RS_BIT)
+
+
+// DMA channel command register
+#define DMAC_DCMD_SAI       (1 << 23) /* source address increment */
+#define DMAC_DCMD_DAI       (1 << 22) /* dest address increment */
+
+#define DMAC_DCMD_SWDH_BIT  14  /* source port width */
+#define DMAC_DCMD_SWDH_32 (0 << DMAC_DCMD_SWDH_BIT)
+#define DMAC_DCMD_SWDH_8  (1 << DMAC_DCMD_SWDH_BIT)
+#define DMAC_DCMD_SWDH_16 (2 << DMAC_DCMD_SWDH_BIT)
+
+#define DMAC_DCMD_DWDH_BIT  12  /* dest port width */
+#define DMAC_DCMD_DWDH_32 (0 << DMAC_DCMD_DWDH_BIT)
+#define DMAC_DCMD_DWDH_8  (1 << DMAC_DCMD_DWDH_BIT)
+ #define DMAC_DCMD_DWDH_16 (2 << DMAC_DCMD_DWDH_BIT)
+
+#define DMAC_DCMD_DS_BIT    8  /* transfer data size of a data unit */
+#define DMAC_DCMD_DS_32BIT    (0 << DMAC_DCMD_DS_BIT)
+#define DMAC_DCMD_DS_8BIT (1 << DMAC_DCMD_DS_BIT)
+#define DMAC_DCMD_DS_16BIT    (2 << DMAC_DCMD_DS_BIT)
+#define DMAC_DCMD_DS_16BYTE   (3 << DMAC_DCMD_DS_BIT)
+#define DMAC_DCMD_DS_32BYTE   (4 << DMAC_DCMD_DS_BIT)
+
+#define DMAC_DCMD_TM        (1 << 7)  /* transfer mode: 0-single 1-block */
+
+
+//detect if channel has completed job
+#define DMAC_DCCSR_TT   (1 << 3)  /* transfer terminated */
+#define DMAC_BASE 0xB3020000
+#define REG32(addr) *((volatile u32 *)(addr))
+#define DMAC_DCCSR(n) (DMAC_BASE + (0x10 + (n) * 0x20)) /* DMA control/status */
+#define REG_DMAC_DCCSR(n) REG32(DMAC_DCCSR((n)))
+
+#define ds2_DMA_isBusy(n) \
+  !(  REG_DMAC_DCCSR((n)) & DMAC_DCCSR_TT )
+
+
+/*
+Copy modes
+
+*/
+
+#define DMA_MODE32BYTE DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | \
+                   DMAC_DCMD_DS_32BYTE | DMAC_DCMD_TM
+
+#define DMA_MODE16BYTE DMAC_DCMD_SWDH_16 | DMAC_DCMD_DWDH_16 | \
+                   DMAC_DCMD_DS_16BYTE | DMAC_DCMD_TM
+
+#define DMA_MODE32BIT DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | \
+                   DMAC_DCMD_DS_32BIT
+
+#define DMA_MODE16BIT DMAC_DCMD_SWDH_16 | DMAC_DCMD_DWDH_16 | \
+                   DMAC_DCMD_DS_16BIT
+
+#define DMA_MODE8BIT DMAC_DCMD_SWDH_8 | DMAC_DCMD_DWDH_8 | \
+                   DMAC_DCMD_DS_8BIT | DMAC_DCMD_TM
+
+#define DMA_MODECOPY DMAC_DCMD_SAI
+
+
+
+extern int _dmaCopy(int ch, void *dest, void *src, unsigned int size, unsigned int flags);
+
+/*
+ * Copy 'size' bytes from src to dest, in blocks of 32 bytes.
+ * size is in bytes and must be a multiple of 32.
+ * Both src and dest must be aligned to 32 bytes.
+ * Returns 0 on failure, non-zero on success.
+ */
+#define ds2_DMAcopy_32Byte(ch, dest, src, size)\
+  _dmaCopy(ch, dest, src, size, DMA_MODECOPY | DMA_MODE32BYTE)
+
+/*
+ * Copy 'size' bytes from src to dest, in blocks of 16 bytes.
+ * size is in bytes and must be a multiple of 16.
+ * Both src and dest must be aligned to 16 bytes.
+ * Returns 0 on failure, non-zero on success.
+ */
+#define ds2_DMAcopy_16Byte(ch, dest, src, size)\
+  _dmaCopy(ch, dest, src, size, DMA_MODECOPY | DMA_MODE16BYTE);
+
+/*
+ * Copy 'size' bytes from src to dest, in blocks of 32 bits (4 bytes).
+ * size is in bytes and must be a multiple of 4.
+ * Both src and dest must be aligned to 32 bits (4 bytes).
+ * Returns 0 on failure, non-zero on success.
+ */
+#define ds2_DMAcopy_32Bit(ch, dest, src, size)\
+  _dmaCopy(ch, dest, src, size, DMA_MODECOPY | DMA_MODE32BIT);
+
+/*
+ * Copy 'size' bytes from src to dest, in blocks of 16 bits (2 bytes).
+ * size is in bytes and must be a multiple of 2.
+ * Both src and dest must be aligned to 16 bits (2 bytes).
+ * Returns 0 on failure, non-zero on success.
+ */
+#define ds2_DMAcopy_16Bit(ch, dest, src, size)\
+  _dmaCopy(ch, dest, src, size, DMA_MODECOPY | DMA_MODE16BIT)
+
+/*
+ * Copy 'size' individual bytes (8 bits at a time) from src to dest.
+ * Returns 0 on failure, non-zero on success.
+ */
+#define ds2_DMAcopy_8Bit(ch, dest, src, size)\
+  _dmaCopy(ch, dest, src, size, DMA_MODECOPY | DMA_MODE8BIT)
+
+
+
+//Stop DMA transfer
+extern void dma_stop(int ch);
+
+#define ds2_DMA_stop(ch)\
+  dma_stop(ch)
+
+//Wait DMA transfer over
+extern int dma_wait_finish(int ch);
+
+#define ds2_DMA_wait(ch)\
+  dma_wait_finish(ch)
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //__DMA_H__
+