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- #ifndef _DMA_H
- #define _DMA_H
- #ifdef __cplusplus
- extern "C" {
- #endif
- #define DMA_INT_TC (1 << 0)
- #define DMA_INT_ERR (1 << 1)
- enum DMA_HW_HS_MAP{
- SPI0_RX = 0,
- SPI0_TX,
- SPI1_RX,
- SPI1_TX,
- I2C0_RX,
- I2C0_TX,
- I2C1_RX,
- I2C1_TX,
- UART0_RX,
- UART0_TX,
- UART1_RX,
- UART1_TX,
- UART2_RX,
- UART2_TX,
- UART3_RX,
- UART3_TX,
- I2S_RX,
- I2S_TX,
- I2S1_RX,
- I2S1_TX,
- SPI2_RX,
- SPI2_TX,
- };
- enum dma_transfer_direction {
- DMA_MEM_TO_MEM,
- DMA_MEM_TO_DEV,
- DMA_DEV_TO_MEM,
- DMA_DEV_TO_DEV,
- DMA_TRANS_NONE,
- };
- enum dma_buswidth {
- DMA_BUSWIDTH_1_BYTE = 0,
- DMA_BUSWIDTH_2_BYTES = 1,
- DMA_BUSWIDTH_4_BYTES = 2,
- };
- struct dma_config {
- enum dma_transfer_direction direction;
- int src_id;
- int dst_id;
- unsigned int src_addr;
- unsigned int dst_addr;
- enum dma_buswidth src_addr_width;
- enum dma_buswidth dst_addr_width;
- u32 src_maxburst;
- u32 dst_maxburst;
- u32 transfer_size;
- int blkint_en;
- int dst_master_id;
- int src_master_id;
- };
- struct dma_lli {
- unsigned int src_addr;
- unsigned int dst_addr;
- unsigned int next_lli;
- unsigned int control;
- };
- struct dma_chan {
- int chan_id;
- int in_use;
- void (*irq_callback)(void *param, unsigned int mask);
- void *callback_param;
- struct dma_lli *lli;
- };
- struct dma_chan *dma_request_channel(int favorite_ch);
- void dma_release_channel(struct dma_chan *chan);
- int dma_config_channel(struct dma_chan *chan, struct dma_config *config);
- int dma_config_cylic_channel(struct dma_chan *chan, struct dma_config *config, int num);
- int dma_register_complete_callback(struct dma_chan *chan,
- void (*callback)(void *param, unsigned int mask),
- void *callback_param);
- int dma_start_channel(struct dma_chan *chan);
- int dma_stop_channel(struct dma_chan *chan);
- int dma_init(void);
- int dma_m2mcpy(unsigned int dst_addr, unsigned int src_addr, int size);
- #ifdef __cplusplus
- }
- #endif
- #endif
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