diff options
| -rw-r--r-- | hw/sparc32_dma.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/hw/sparc32_dma.c b/hw/sparc32_dma.c index 3ceb851e91..b52170787b 100644 --- a/hw/sparc32_dma.c +++ b/hw/sparc32_dma.c @@ -62,6 +62,9 @@ #define DMA_DRAIN_FIFO 0x40 #define DMA_RESET 0x80 +/* XXX SCSI and ethernet should have different read-only bit masks */ +#define DMA_CSR_RO_MASK 0xfe000007 + typedef struct DMAState DMAState; struct DMAState { @@ -187,7 +190,7 @@ static void dma_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) switch (saddr) { case 0: if (val & DMA_INTREN) { - if (val & DMA_INTR) { + if (s->dmaregs[0] & DMA_INTR) { DPRINTF("Raise IRQ\n"); qemu_irq_raise(s->irq); } @@ -204,16 +207,17 @@ static void dma_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) val &= ~DMA_DRAIN_FIFO; } else if (val == 0) val = DMA_DRAIN_FIFO; - val &= 0x0fffffff; + val &= ~DMA_CSR_RO_MASK; val |= DMA_VER; + s->dmaregs[0] = (s->dmaregs[0] & DMA_CSR_RO_MASK) | val; break; case 1: s->dmaregs[0] |= DMA_LOADED; - break; + /* fall through */ default: + s->dmaregs[saddr] = val; break; } - s->dmaregs[saddr] = val; } static CPUReadMemoryFunc * const dma_mem_read[3] = { |