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-rw-r--r--hw/misc/macio/mac_dbdma.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/hw/misc/macio/mac_dbdma.c b/hw/misc/macio/mac_dbdma.c
index c5dd0ac16b..ef5b0a51ca 100644
--- a/hw/misc/macio/mac_dbdma.c
+++ b/hw/misc/macio/mac_dbdma.c
@@ -783,8 +783,18 @@ static void dbdma_unassigned_rw(DBDMA_io *io)
static void dbdma_unassigned_flush(DBDMA_io *io)
{
DBDMA_channel *ch = io->channel;
+ dbdma_cmd *current = &ch->current;
+ uint16_t cmd;
qemu_log_mask(LOG_GUEST_ERROR, "%s: use of unassigned channel %d\n",
__func__, ch->channel);
+
+ cmd = le16_to_cpu(current->command) & COMMAND_MASK;
+ if (cmd == OUTPUT_MORE || cmd == OUTPUT_LAST ||
+ cmd == INPUT_MORE || cmd == INPUT_LAST) {
+ current->xfer_status = cpu_to_le16(ch->regs[DBDMA_STATUS] | FLUSH);
+ current->res_count = cpu_to_le16(io->len);
+ dbdma_cmdptr_save(ch);
+ }
}
void* DBDMA_init (MemoryRegion **dbdma_mem)