96 lines
1.7 KiB
C
96 lines
1.7 KiB
C
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#ifndef _DMA_H
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#define _DMA_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define DMA_INT_TC (1 << 0)
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#define DMA_INT_ERR (1 << 1)
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enum DMA_HW_HS_MAP{
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SPI0_RX = 0,
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SPI0_TX,
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SPI1_RX,
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SPI1_TX,
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I2C0_RX,
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I2C0_TX,
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I2C1_RX,
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I2C1_TX,
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UART0_RX,
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UART0_TX,
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UART1_RX,
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UART1_TX,
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UART2_RX,
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UART2_TX,
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UART3_RX,
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UART3_TX,
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I2S_RX,
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I2S_TX,
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I2S1_RX,
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I2S1_TX,
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SDMMC0_RTX,
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};
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enum dma_transfer_direction {
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DMA_MEM_TO_MEM,
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DMA_MEM_TO_DEV,
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DMA_DEV_TO_MEM,
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DMA_DEV_TO_DEV,
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DMA_TRANS_NONE,
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};
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enum dma_buswidth {
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DMA_BUSWIDTH_1_BYTE = 0,
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DMA_BUSWIDTH_2_BYTES = 1,
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DMA_BUSWIDTH_4_BYTES = 2,
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};
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struct dma_config {
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enum dma_transfer_direction direction;
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int src_id;
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int dst_id;
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unsigned int src_addr;
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unsigned int dst_addr;
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enum dma_buswidth src_addr_width;
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enum dma_buswidth dst_addr_width;
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u32 src_maxburst;
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u32 dst_maxburst;
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u32 transfer_size;
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int blkint_en;
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};
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struct dma_lli {
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unsigned int src_addr;
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unsigned int dst_addr;
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unsigned int next_lli;
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unsigned int control;
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};
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struct dma_chan {
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int chan_id;
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int in_use;
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void (*irq_callback)(void *param, unsigned int mask);
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void *callback_param;
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struct dma_lli *lli;
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};
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struct dma_chan *dma_request_channel(int favorite_ch);
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void dma_release_channel(struct dma_chan *chan);
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int dma_config_channel(struct dma_chan *chan, struct dma_config *config);
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int dma_register_complete_callback(struct dma_chan *chan,
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void (*callback)(void *param, unsigned int mask),
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void *callback_param);
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int dma_start_channel(struct dma_chan *chan);
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int dma_stop_channel(struct dma_chan *chan);
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int dma_init(void);
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int dma_m2mcpy(unsigned int dst_addr, unsigned int src_addr, int size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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