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| author | Hervé Poussineau <hpoussin@reactos.org> | 2016-02-25 13:45:32 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-03-07 13:18:28 +0100 |
| commit | bb8f32c0318cb6c6e13e09ec0f35e21eff246413 (patch) | |
| tree | 55716ea1fe656983c0dae91bb21e5104a08a86c9 /hw/dma | |
| parent | c586eac33670c198c6c9ceb1419aa99dafcce907 (diff) | |
| download | qemu-bb8f32c0318cb6c6e13e09ec0f35e21eff246413.zip qemu-bb8f32c0318cb6c6e13e09ec0f35e21eff246413.tar.gz qemu-bb8f32c0318cb6c6e13e09ec0f35e21eff246413.tar.bz2 | |
i8257: fix Terminal Count status
When a DMA transfer is done (ie all bytes have been transfered), the corresponding
Terminal Count bit must be set in the status register.
This bit is already cleared in i8257_read_cont and i8257_write_cont when required.
This fixes (at least) floppy transfer in IBM 40p firmware, which checks in DMA
controller if everything went fine.
Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Message-Id: <1456404332-31556-1-git-send-email-hpoussin@reactos.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/dma')
| -rw-r--r-- | hw/dma/i8257.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/dma/i8257.c b/hw/dma/i8257.c index 5a52707..6078893 100644 --- a/hw/dma/i8257.c +++ b/hw/dma/i8257.c @@ -342,6 +342,10 @@ static void i8257_channel_run(I8257State *d, int ichan) r->now[COUNT], (r->base[COUNT] + 1) << ncont); r->now[COUNT] = n; ldebug ("dma_pos %d size %d\n", n, (r->base[COUNT] + 1) << ncont); + if (n == (r->base[COUNT] + 1) << ncont) { + ldebug("transfer done\n"); + d->status |= (1 << ichan); + } } static void i8257_dma_run(void *opaque) |