fw_cfg: add DMA register

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Add an optional <dma_off> kernel module (or command line) parameter
using the following syntax:

      [qemu_fw_cfg.]ioport=<size>@<base>[:<ctrl_off>:<data_off>[:<dma_off>]]
 or
      [qemu_fw_cfg.]mmio=<size>@<base>[:<ctrl_off>:<data_off>[:<dma_off>]]

and initializes the register address using given or default offset.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Gabriel Somlo <somlo@cmu.edu>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

...

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Marc-André Lureau 2018-02-28 16:06:12 +01:00 • committed by Michael S. Tsirkin

parent 1f57bc12d8

commit 14d1824c76

1 changed files with 41 additions and 12 deletions

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drivers/firmware/qemu_fw_cfg.c

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