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dsp56k

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dsp56k - DSP56001 ¤Î¥¤¥ó¥¿¡¼¥Õ¥§¡¼¥¹¡¦¥Ç¥Ð¥¤¥¹

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#include <asm/dsp56k.h>



ssize_t read(int fd, void *data, size_t length);

ssize_t write(int fd, void *data, size_t length);

int ioctl(int fd, DSP56K_UPLOAD, struct dsp56k_upload *program);

int ioctl(int fd, DSP56K_SET_TX_WSIZE, int wsize);

int ioctl(int fd, DSP56K_SET_RX_WSIZE, int wsize);

int ioctl(int fd, DSP56K_HOST_FLAGS, struct dsp56k_host_flags *flags);

int ioctl(int fd, DSP56K_HOST_CMD, int cmd);

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¼¡¤Î ioctl(2) ¥³¡¼¥ë¤¬ dsp56k ¥Ç¥Ð¥¤¥¹¤òÀ©¸æ¤¹¤ë¤¿¤á¤Ë»È¤ï¤ì¤ë¡£

DSP56K_UPLOAD

DSP56001 ¤ò¥ê¥»¥Ã¥È¤·¡¢¥×¥í¥°¥é¥à¤ò¥¢¥Ã¥×¥í¡¼¥É¤¹¤ë¡£ ioctl(2) ¤Î 3 ÈÖÌܤΰú¤­¿ô¤Ï¡¢ ¹½Â¤ÂÎ struct dsp56k_binary ¤Ø¤Î¥Ý¥¤¥ó¥¿¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ ¹½Â¤ÂΤΥá¥ó¥Ð¡¼ bin ¤Ï DSP56001 ¥Ð¥¤¥Ê¥ê¥×¥í¥°¥é¥à¤ò»Ø¤·¡¢ ¹½Â¤ÂΤΥá¥ó¥Ð¡¼ len ¤Ï 24 ¥Ó¥Ã¥È¥ï¡¼¥É¤Ç¿ô¤¨¤¿ ¥×¥í¥°¥é¥à¤ÎŤµ¤ËÀßÄꤵ¤ì¤Æ¤¤¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£

DSP56K_SET_TX_WSIZE

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DSP56K_SET_RX_WSIZE

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DSP56K_HOST_FLAGS

¥Û¥¹¥È¥Õ¥é¥°¤òÆɤ߽ñ¤­¤¹¤ë¡£ ¥Û¥¹¥È¥Õ¥é¥°¤Ï¡¢°ìÈÌŪ¤ÊÌÜŪ¤Ç»È¤¦¤³¤È¤Î¤Ç¤­¤ë¥Ó¥Ã¥È¤Ç¡¢ ¥Û¥¹¥È¥³¥ó¥Ô¥å¡¼¥¿¤È DSP56001 ¤ÎξÊý¤«¤éÆɤळ¤È¤¬¤Ç¤­¤ë¡£ ¥Ó¥Ã¥È 0 ¤È 1 ¤Ï¡¢¥Û¥¹¥È¤Ë¤è¤Ã¤Æ½ñ¤­¹þ¤à¤³¤È¤¬¤Ç¤­¡¢ ¥Ó¥Ã¥È 2 ¤È 3 ¤Ï¡¢DSP56001 ¤Ë¤è¤Ã¤Æ½ñ¤­¹þ¤à¤³¤È¤¬¤Ç¤­¤ë¡£

¥Û¥¹¥È¥Õ¥é¥°¤Ë¥¢¥¯¥»¥¹¤¹¤ë¤¿¤á¤Ë¤Ï¡¢ ioctl(2) ¤Î 3 ÈÖÌܤΰú¤­¿ô¤¬ ¹½Â¤ÂÎ struct dsp56k_host_flags ¤Ø¤Î¥Ý¥¤¥ó¥¿¤Ç¤Ê¤±¤ì¤Ð¤Ê¤é¤Ê¤¤¡£ ¤³¤Î¹½Â¤ÂΤΥá¥ó¥Ð¡¼ dir ¤Î¥Ó¥Ã¥È 0 ¤Þ¤¿¤Ï 1 ¤¬ÀßÄꤵ¤ì¤ë¤È¡¢ ¥á¥ó¥Ð¡¼ out ¤ÎÂбþ¤¹¤ë¥Ó¥Ã¥È¤ÎÃͤ¬¥Û¥¹¥È¥Õ¥é¥°¤Ë½ñ¤­¹þ¤Þ¤ì¤ë¡£ ¤¹¤Ù¤Æ¤Î¥Û¥¹¥È¥Õ¥é¥°¤Î¾õÂ֤ϡ¢¹½Â¤ÂΤΥá¥ó¥Ð¡¼ status ¤Î ²¼¤«¤é 4 ¥Ó¥Ã¥È¤È¤·¤ÆÊÖ¤µ¤ì¤ë¡£

DSP56K_HOST_CMD

¥Û¥¹¥È¥³¥Þ¥ó¥É¤òÁ÷¿®¤¹¤ë¡£ Á÷¿®¤Ç¤­¤ëÃÍ¤Ï 0 ¡Á 31 ¤ÎÈϰϤǡ¢DSP56001 ¤ÇÆ°ºî¤·¤Æ¤¤¤ë¥×¥í¥°¥é¥à¤Ë¤è¤Ã¤Æ ½èÍý¤µ¤ì¤ë¥æ¡¼¥¶¡¼ÄêµÁ¥³¥Þ¥ó¥É¤Ç¤¢¤ë¡£

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/dev/dsp56k

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Fredrik Noring <noring@nocrew.org>, lars brinkhoff <lars@nocrew.org>, Tomas Berndtsson <tomas@nocrew.org>.

´ØÏ¢¹àÌÜ

linux/include/asm-m68k/dsp56k.h, linux/drivers/char/dsp56k.c, http://dsp56k.nocrew.org/, DSP56000/DSP56001 Digital Signal Processor User's Manual