starting to separate platform-specific code to facilitate a PC build

[gbajam22] / src / dma.c

diff --git a/src/dma.c b/src/dma.c
deleted file mode 100644 (file)
index ba23ab7..0000000
--- a/src/dma.c
+++ /dev/null
@@ -1,62 +0,0 @@
-#include "dma.h"
-
-/* DMA Options */
-#define DMA_ENABLE                             0x80000000
-#define DMA_INT_ENABLE                 0x40000000
-#define DMA_TIMING_IMMED               0x00000000
-#define DMA_TIMING_VBLANK              0x10000000
-#define DMA_TIMING_HBLANK              0x20000000
-#define DMA_TIMING_DISPSYNC            0x30000000
-#define DMA_16                                 0x00000000
-#define DMA_32                                 0x04000000
-#define DMA_REPEAT                             0x02000000
-#define DMA_SRC_INC                            0x00000000
-#define DMA_SRC_DEC                            0x00800000
-#define DMA_SRC_FIX                            0x01000000
-#define DMA_DST_INC                            0x00000000
-#define DMA_DST_DEC                            0x00200000
-#define DMA_DST_FIX1                   0x00400000
-#define DMA_DST_RELOAD                 0x00600000
-
-/* DMA Register Parts */
-#define DMA_SRC                0
-#define DMA_DST                1
-#define DMA_CTRL       2
-
-static volatile uint32_t *reg_dma[4] = {(void*)0x040000b0, (void*)0x040000bc, (void*)0x040000c8, (void*)0x040000d4 };
-
-/* --- perform a copy of words or halfwords using DMA --- */
-
-void dma_copy32(int channel, void *dst, void *src, int words, unsigned int flags)
-{
-       reg_dma[channel][DMA_SRC] = (uint32_t)src;
-       reg_dma[channel][DMA_DST] = (uint32_t)dst;
-       reg_dma[channel][DMA_CTRL] = words | flags | DMA_32 | DMA_ENABLE;
-}
-
-void dma_copy16(int channel, void *dst, void *src, int halfwords, unsigned int flags)
-{
-       reg_dma[channel][DMA_SRC] = (uint32_t)src;
-       reg_dma[channel][DMA_DST] = (uint32_t)dst;
-       reg_dma[channel][DMA_CTRL] = halfwords | flags | DMA_16 | DMA_ENABLE;
-}
-
-/* --- fill a buffer with an ammount of words and halfwords using DMA --- */
-
-static uint32_t fill[4];
-
-void dma_fill32(int channel, void *dst, uint32_t val, int words)
-{
-       fill[channel] = val;
-       reg_dma[channel][DMA_SRC] = (uint32_t)(fill + channel);
-       reg_dma[channel][DMA_DST] = (uint32_t)dst;
-       reg_dma[channel][DMA_CTRL] = words | DMA_SRC_FIX | DMA_TIMING_IMMED | DMA_32 | DMA_ENABLE;
-}
-
-void dma_fill16(int channel, void *dst, uint16_t val, int halfwords)
-{
-       fill[channel] = val;
-       reg_dma[channel][DMA_SRC] = (uint32_t)(fill + channel);
-       reg_dma[channel][DMA_DST] = (uint32_t)dst;
-       reg_dma[channel][DMA_CTRL] = halfwords | DMA_SRC_FIX | DMA_TIMING_IMMED | DMA_16 | DMA_ENABLE;
-}