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kernel/linux-rt-4.4.41/arch/cris/include/arch-v32/mach-a3/mach/dma.h 1.86 KB
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  #ifndef _ASM_ARCH_CRIS_DMA_H
  #define _ASM_ARCH_CRIS_DMA_H
  
  /* Defines for using and allocating dma channels. */
  
  #define MAX_DMA_CHANNELS	12 /* 8 and 10 not used. */
  
  #define NETWORK_ETH_TX_DMA_NBR 0        /* Ethernet 0 out. */
  #define NETWORK_ETH_RX_DMA_NBR 1        /* Ethernet 0 in. */
  
  #define IO_PROC_DMA_TX_DMA_NBR 4        /* IO processor DMA0 out. */
  #define IO_PROC_DMA_RX_DMA_NBR 5        /* IO processor DMA0 in. */
  
  #define ASYNC_SER3_TX_DMA_NBR 2         /* Asynchronous serial port 3 out. */
  #define ASYNC_SER3_RX_DMA_NBR 3         /* Asynchronous serial port 3 in. */
  
  #define ASYNC_SER2_TX_DMA_NBR 6         /* Asynchronous serial port 2 out. */
  #define ASYNC_SER2_RX_DMA_NBR 7         /* Asynchronous serial port 2 in. */
  
  #define ASYNC_SER1_TX_DMA_NBR 4         /* Asynchronous serial port 1 out. */
  #define ASYNC_SER1_RX_DMA_NBR 5         /* Asynchronous serial port 1 in. */
  
  #define SYNC_SER_TX_DMA_NBR 6           /* Synchronous serial port 0 out. */
  #define SYNC_SER_RX_DMA_NBR 7           /* Synchronous serial port 0 in. */
  
  #define ASYNC_SER0_TX_DMA_NBR 0         /* Asynchronous serial port 0 out. */
  #define ASYNC_SER0_RX_DMA_NBR 1         /* Asynchronous serial port 0 in. */
  
  #define STRCOP_TX_DMA_NBR 2             /* Stream co-processor out. */
  #define STRCOP_RX_DMA_NBR 3             /* Stream co-processor in. */
  
  #define dma_eth0 dma_eth
  #define dma_eth1 dma_eth
  
  enum dma_owner {
  	dma_eth,
  	dma_ser0,
  	dma_ser1,
  	dma_ser2,
  	dma_ser3,
  	dma_ser4,
  	dma_iop,
  	dma_sser,
  	dma_strp,
  	dma_h264,
  	dma_jpeg
  };
  
  int crisv32_request_dma(unsigned int dmanr, const char *device_id,
  	unsigned options, unsigned bandwidth, enum dma_owner owner);
  void crisv32_free_dma(unsigned int dmanr);
  
  /* Masks used by crisv32_request_dma options: */
  #define DMA_VERBOSE_ON_ERROR 1
  #define DMA_PANIC_ON_ERROR (2|DMA_VERBOSE_ON_ERROR)
  #define DMA_INT_MEM 4
  
  #endif /* _ASM_ARCH_CRIS_DMA_H */