diff options
Diffstat (limited to 'sdk-modifications/libsrc/dma/dmacopy.c')
| -rw-r--r-- | sdk-modifications/libsrc/dma/dmacopy.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/sdk-modifications/libsrc/dma/dmacopy.c b/sdk-modifications/libsrc/dma/dmacopy.c deleted file mode 100644 index 83609d3..0000000 --- a/sdk-modifications/libsrc/dma/dmacopy.c +++ /dev/null @@ -1,167 +0,0 @@ -#include <stdlib.h> -#include "ds2_dma.h" -#include "ds2_types.h" - -#define MAX_DMA_NUM 6 /* max 6 channels */ - - -// DMA request source register -#define DMAC_DRSR_RS_BIT 0 -#define DMAC_DRSR_RS_MASK (0x2f << DMAC_DRSR_RS_BIT) - #define DMAC_DRSR_RS_AUTO (8 << DMAC_DRSR_RS_BIT) - #define DMAC_DRSR_RS_UART0OUT (20 << DMAC_DRSR_RS_BIT) - #define DMAC_DRSR_RS_UART0IN (21 << DMAC_DRSR_RS_BIT) - #define DMAC_DRSR_RS_SSIOUT (22 << DMAC_DRSR_RS_BIT) - #define DMAC_DRSR_RS_SSIIN (23 << DMAC_DRSR_RS_BIT) - #define DMAC_DRSR_RS_AICOUT (24 << DMAC_DRSR_RS_BIT) - #define DMAC_DRSR_RS_AICIN (25 << DMAC_DRSR_RS_BIT) - #define DMAC_DRSR_RS_MSCOUT (26 << DMAC_DRSR_RS_BIT) //SD0 - #define DMAC_DRSR_RS_MSCIN (27 << DMAC_DRSR_RS_BIT) - - -// DMA channel command register -#define DMAC_DCMD_SAI (1 << 23) /* source address increment */ -#define DMAC_DCMD_DAI (1 << 22) /* dest address increment */ -#define DMAC_DCMD_SWDH_BIT 14 /* source port width */ -#define DMAC_DCMD_SWDH_MASK (0x03 << DMAC_DCMD_SWDH_BIT) - #define DMAC_DCMD_SWDH_32 (0 << DMAC_DCMD_SWDH_BIT) - #define DMAC_DCMD_SWDH_8 (1 << DMAC_DCMD_SWDH_BIT) - #define DMAC_DCMD_SWDH_16 (2 << DMAC_DCMD_SWDH_BIT) -#define DMAC_DCMD_DWDH_BIT 12 /* dest port width */ -#define DMAC_DCMD_DWDH_MASK (0x03 << DMAC_DCMD_DWDH_BIT) - #define DMAC_DCMD_DWDH_32 (0 << DMAC_DCMD_DWDH_BIT) - #define DMAC_DCMD_DWDH_8 (1 << DMAC_DCMD_DWDH_BIT) - #define DMAC_DCMD_DWDH_16 (2 << DMAC_DCMD_DWDH_BIT) -#define DMAC_DCMD_DS_BIT 8 /* transfer data size of a data unit */ -#define DMAC_DCMD_DS_MASK (0x07 << DMAC_DCMD_DS_BIT) - #define DMAC_DCMD_DS_32BIT (0 << DMAC_DCMD_DS_BIT) - #define DMAC_DCMD_DS_8BIT (1 << DMAC_DCMD_DS_BIT) - #define DMAC_DCMD_DS_16BIT (2 << DMAC_DCMD_DS_BIT) - #define DMAC_DCMD_DS_16BYTE (3 << DMAC_DCMD_DS_BIT) - #define DMAC_DCMD_DS_32BYTE (4 << DMAC_DCMD_DS_BIT) -#define DMAC_DCMD_TM (1 << 7) /* transfer mode: 0-single 1-block */ -#define DMAC_DCCSR_TT (1 << 3) /* transfer terminated */ - -#define DMAC_BASE 0xB3020000 -#define REG32(addr) *((volatile u32 *)(addr)) -#define DMAC_DCCSR(n) (DMAC_BASE + (0x10 + (n) * 0x20)) /* DMA control/status */ -#define REG_DMAC_DCCSR(n) REG32(DMAC_DCCSR((n))) - -#define __dmac_channel_transmit_end_detected(n) \ - ( REG_DMAC_DCCSR((n)) & DMAC_DCCSR_TT ) - -/* - * Copy 'size' bytes from src to dest, in blocks of 32 bytes. - * size is in bytes and must be a multiple of 32. - * Both src and dest must be aligned to 32 bytes. - * Returns 0 on failure, non-zero on success. - */ -int dma_copy32Byte(int ch, void *dest, void *src, unsigned int size){ - int test = 0; - if(!(test = dma_request(ch, NULL, 0, - //increment dest addr, increment source addr - DMAC_DCMD_DAI | DMAC_DCMD_SAI | - //set src width 32 bytes, set dest width 32 bytes - DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | - //set copy mode to 32 bytes, copy in blocks - DMAC_DCMD_DS_32BYTE | DMAC_DCMD_TM, - //auto request type - DMAC_DRSR_RS_AUTO))) - { - dma_start(ch, (unsigned int)src, (unsigned int)dest, size); - } - return test; -} - -/* - -int sampleUsage(in ch, void *dest, void *src, unsigned int size){ - //channel 0 is used for mmc stuff, so its best to avoid using it - - //initialize and start copy - if(dma_copy32Byte(ch, dest, src, size)){ - dma_wait_finish(ch);//wait for copy to finish - dma_stop(ch);//must stop after transfer is done to reset channel - return 0; - } - return -1; -} - -*/ - -/* - * Copy 'size' bytes from src to dest, in blocks of 16 bytes. - * size is in bytes and must be a multiple of 16. - * Both src and dest must be aligned to 16 bytes. - * Returns 0 on failure, non-zero on success. - */ -int dma_copy16Byte(int ch, void *dest, void *src, unsigned int size){ - int test = 0; - if(!(test = dma_request(ch, NULL, 0, - DMAC_DCMD_DAI | DMAC_DCMD_SAI | DMAC_DCMD_SWDH_16 | - DMAC_DCMD_DWDH_16 | DMAC_DCMD_DS_16BYTE | DMAC_DCMD_TM, - DMAC_DRSR_RS_AUTO))) - { - dma_start(ch, (unsigned int)src, (unsigned int)dest, size); - } - - return test; -} - -/* - * Copy 'size' bytes from src to dest, in blocks of 32 bits (4 bytes). - * size is in bytes and must be a multiple of 4. - * Both src and dest must be aligned to 32 bits (4 bytes). - * Returns 0 on failure, non-zero on success. - */ -int dma_copy32Bit(int ch, void *dest, void *src, unsigned int size){ - int test = 0; - if(!(test = dma_request(ch, NULL, 0, - DMAC_DCMD_DAI | DMAC_DCMD_SAI | DMAC_DCMD_SWDH_32 | DMAC_DCMD_DWDH_32 | - DMAC_DCMD_DS_32BIT | DMAC_DCMD_TM, - DMAC_DRSR_RS_AUTO))) - { - dma_start(ch, (unsigned int)src, (unsigned int)dest, size); - } - - return test; -} - -/* - * Copy 'size' bytes from src to dest, in blocks of 16 bits (2 bytes). - * size is in bytes and must be a multiple of 2. - * Both src and dest must be aligned to 16 bits (2 bytes). - * Returns 0 on failure, non-zero on success. - */ -int dma_copy16Bit(int ch, void *dest, void *src, unsigned int size){ - int test = 0; - - if(!(test = dma_request(ch, NULL, 0, - DMAC_DCMD_DAI | DMAC_DCMD_SAI | DMAC_DCMD_SWDH_16 | DMAC_DCMD_DWDH_16 | - DMAC_DCMD_DS_16BIT, - DMAC_DRSR_RS_AUTO))) - { - dma_start(ch, (unsigned int)src, (unsigned int)dest, size); - } - - return test; -} - - -//returns if a channel is still copying -int dma_isBusy(int ch){ - if(ch < 1 || ch >= MAX_DMA_NUM) - return 0; - - return !__dmac_channel_transmit_end_detected(ch); -} - -//returns the first non busy channel -int dma_getFree(void){ - int i; - for(i = 1; i < MAX_DMA_NUM; i++){ - if(!dma_isBusy(i)) - return i; - } - return -1; -} |