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# Date Author Comment
37b7842c 03/20/2009 08:26 pm aliguori

Move block dma helpers aiocb to store dma state (Avi Kivity)

Use the dedicated dma aiocb to store intermediate state for dma block
transactions.

Signed-off-by: Avi Kivity <>
Signed-off-by: Anthony Liguori <>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6874 c046a42c-6fe2-441c-8c8c-71466251a162
6512a2a7 03/20/2009 08:26 pm aliguori

Implement cancellation method for dma async I/O (Avi Kivity)

Move the dma helpers to a private aio pool, and implement a cancellation
method for them. Should prevent issues when cancelling I/O while dma is
in progress.

Signed-off-by: Avi Kivity <>...
59a703eb 02/05/2009 11:23 pm aliguori

Introduce block dma helpers (Avi Kivity)

These helpers perform read/write requests on entire scatter/gather lists,
relieving the device emulation code from mapping and unmapping physical
memory, and from looping when map resources are exhausted.

Signed-off-by: Avi Kivity <>...
244ab90e 02/05/2009 11:23 pm aliguori

Add a scatter-gather list type and accessors (Avi Kivity)

Scatter-gather lists are used extensively in dma-capable devices; a
single data structure allows more code reuse later on.

Signed-off-by: Avi Kivity <>
Signed-off-by: Anthony Liguori <>...