dma.h
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00001 00006 #ifndef __LIBDRAGON_DMA_H 00007 #define __LIBDRAGON_DMA_H 00008 00009 #ifdef __cplusplus 00010 extern "C" { 00011 #endif 00012 00013 void dma_write(void * ram_address, unsigned long pi_address, unsigned long len); 00014 void dma_read(void * ram_address, unsigned long pi_address, unsigned long len); 00015 volatile int dma_busy(); 00016 00017 /* 32 bit IO read from PI device */ 00018 uint32_t io_read(uint32_t pi_address); 00019 00020 /* 32 bit IO write to PI device */ 00021 void io_write(uint32_t pi_address, uint32_t data); 00022 00023 #ifdef __cplusplus 00024 } 00025 #endif 00026 00027 #endif
