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bcm, bcm64: clean dma destination buffer before issuing dma in case of non cache-line-size aligned buffer

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This commit is contained in:
cinap_lenrek 2019-07-25 13:55:17 +02:00
parent 706926f818
commit 1717368f64
1 changed files with 2 additions and 0 deletions
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2
sys/src/9/bcm/dma.c
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@ -174,6 +174,7 @@ dmastart(int chan, int dev, int dir, void *src, void *dst, int len)
switch(dir){
case DmaD2M:
ctlr->flush = dst;
dmaflush(1, dst, len);
ti = Srcdreq | Destinc;
cb->sourcead = dmaioaddr(src);
cb->destad = dmaaddr(dst);
@ -187,6 +188,7 @@ dmastart(int chan, int dev, int dir, void *src, void *dst, int len)
break;
case DmaM2M:
ctlr->flush = dst;
dmaflush(1, dst, len);
dmaflush(1, src, len);
ti = Srcinc | Destinc;
cb->sourcead = dmaaddr(src);