TD (two dimensions) DMA mode did not work, because the xlen variable has not been re-initialized before each additional ylen run through in bcm2835_dma_update(), which has been fixed.
Signed-off-by: Rene Stange <rs...@o2online.de> --- hw/dma/bcm2835_dma.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/dma/bcm2835_dma.c b/hw/dma/bcm2835_dma.c index 667d951a6f..ccff5ed55b 100644 --- a/hw/dma/bcm2835_dma.c +++ b/hw/dma/bcm2835_dma.c @@ -54,7 +54,7 @@ static void bcm2835_dma_update(BCM2835DMAState *s, unsigned c) { BCM2835DMAChan *ch = &s->chan[c]; - uint32_t data, xlen, ylen; + uint32_t data, xlen, xlen_td, ylen; int16_t dst_stride, src_stride; if (!(s->enable & (1 << c))) { @@ -82,6 +82,7 @@ static void bcm2835_dma_update(BCM2835DMAState *s, unsigned c) dst_stride = 0; src_stride = 0; } + xlen_td = xlen; while (ylen != 0) { /* Normal transfer mode */ @@ -117,6 +118,7 @@ static void bcm2835_dma_update(BCM2835DMAState *s, unsigned c) if (--ylen != 0) { ch->source_ad += src_stride; ch->dest_ad += dst_stride; + xlen = xlen_td; } } ch->cs |= BCM2708_DMA_END; -- 2.16.4