a0436e9239
As a preparation for moving all IDE commands into their own function like in the ATAPI code, introduce a 'handler' callback to ide_cmd_table. Commands using this new infrastructure get some things handled automatically: * The BSY flag is set before calling the handler (in order to avoid bugs like the one fixed in f68ec837) and reset on completion. * The (obsolete) DSC flag in the status register is set on completion if the command is flagged with SET_DSC in the command table * An IRQ is triggered on completion. * The error register and the ERR flag in the status register are cleared before calling the handler and on completion it is asserted that either none or both of them are set. No commands are converted at this point. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Read the documentation in qemu-doc.html or on http://wiki.qemu.org - QEMU team