diff options
Diffstat (limited to 'sys/arch/wgrisc/dev/dma.h')
| -rw-r--r-- | sys/arch/wgrisc/dev/dma.h | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/sys/arch/wgrisc/dev/dma.h b/sys/arch/wgrisc/dev/dma.h index dd5fb4c51b2..3011b068c8e 100644 --- a/sys/arch/wgrisc/dev/dma.h +++ b/sys/arch/wgrisc/dev/dma.h @@ -1,4 +1,4 @@ -/* $OpenBSD: dma.h,v 1.1 1997/02/06 16:02:42 pefo Exp $ */ +/* $OpenBSD: dma.h,v 1.2 1997/02/16 22:31:22 pefo Exp $ */ /* * Copyright (c) 1996 Per Fogelstrom @@ -124,6 +124,10 @@ typedef struct dma_softc { xcmd = ~(0x30 << 6); \ } \ dcmd |= (1 << 26); \ + /* Switch direction before enable */ \ + out32(R3715_IO_TIMING, (in32(R3715_IO_TIMING) & xcmd) | \ + (dcmd & ~0x410)); \ + (void)in16(RISC_STATUS); \ out32(R3715_IO_TIMING, (in32(R3715_IO_TIMING) & xcmd) | dcmd);\ } #endif @@ -132,9 +136,17 @@ typedef struct dma_softc { #define DMA_DRAIN(r) #define DMA_END(c) \ { \ - int dcmd; \ - dcmd = ((c)->dma_ch == DMA_CH0) ? 0x10 : 0x10000; \ - out32(R3715_IO_TIMING, in32(R3715_IO_TIMING) & ~dcmd); \ + int resudial; \ + if((c)->dma_ch == DMA_CH0) { \ + out32(R3715_IO_TIMING, in32(R3715_IO_TIMING) & ~0x10); \ + resudial = in32(R3715_DMA_CNT0); \ +if(resudial) \ +printf("res: %d\n", resudial); \ + } \ + else { \ + out32(R3715_IO_TIMING, in32(R3715_IO_TIMING) & ~0x400); \ + resudial = in32(R3715_DMA_CNT1); \ + } \ if((c)->mode == DMA_FROM_DEV) { \ int *_v = (int *)(c)->req_va; \ int *_p = (int *)PHYS_TO_UNCACHED(CACHED_TO_PHYS(dma_buffer)); \ |