diff options
Diffstat (limited to 'hw/ppc/ppc440_uc.c')
| -rw-r--r-- | hw/ppc/ppc440_uc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/hw/ppc/ppc440_uc.c b/hw/ppc/ppc440_uc.c index a1ecf6dd1c..11fdb88c22 100644 --- a/hw/ppc/ppc440_uc.c +++ b/hw/ppc/ppc440_uc.c @@ -904,14 +904,17 @@ static void dcr_write_dma(void *opaque, int dcrn, uint32_t val) int width, i, sidx, didx; uint8_t *rptr, *wptr; hwaddr rlen, wlen; + hwaddr xferlen; sidx = didx = 0; width = 1 << ((val & DMA0_CR_PW) >> 25); + xferlen = count * width; + wlen = rlen = xferlen; rptr = cpu_physical_memory_map(dma->ch[chnl].sa, &rlen, false); wptr = cpu_physical_memory_map(dma->ch[chnl].da, &wlen, true); - if (rptr && wptr) { + if (rptr && rlen == xferlen && wptr && wlen == xferlen) { if (!(val & DMA0_CR_DEC) && val & DMA0_CR_SAI && val & DMA0_CR_DAI) { /* optimise common case */ |