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[Qemu-devel] [PULL 02/15] i8257: fix Terminal Count status
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 02/15] i8257: fix Terminal Count status |
Date: |
Mon, 7 Mar 2016 18:36:48 +0100 |
From: Hervé Poussineau <address@hidden>
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 <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: John Snow <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/dma/i8257.c | 4 ++++
1 file changed, 4 insertions(+)
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)
--
2.5.0
- [Qemu-devel] [PULL 00/15] Memory changes and misc bug fixes for 2016-03-07, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 01/15] log: do not log if QEMU is daemonized but without -D, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 02/15] i8257: fix Terminal Count status,
Paolo Bonzini <=
- [Qemu-devel] [PULL 03/15] exec: Return RAMBlock pointer from allocating functions, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 04/15] memory: Move assignment to ram_block to memory_region_init_*, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 05/15] memory: Implement memory_region_get_ram_addr with mr->ram_block, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 06/15] memory: Drop MemoryRegion.ram_addr, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 07/15] exec: Pass RAMBlock pointer to qemu_ram_free, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 08/15] exec: Factor out section_covers_addr, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 11/15] doc/memory.txt: correct a logic error, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 09/15] exec: Introduce AddressSpaceDispatch.mru_section, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 12/15] doc/memory.txt: correct description of MemoryRegionOps fields, Paolo Bonzini, 2016/03/07
- [Qemu-devel] [PULL 13/15] MAINTAINERS: Add entry for include/sysemu/kvm*.h, Paolo Bonzini, 2016/03/07