Hum, ... I think I have a problem.
With the default register value (that I get a reset) the CS line is
deselected when the CS is high.
So at reset I would need to set my 4 CS lines to high in order to be
able to drive them low later.
So during the "reset" I need to set my 4 CS line to 1 but according to
you feedback I should not do it with qemu_set_irq()...
Is there another way than qemu_set_irq() to do set my lines to high level ?
Regards.
JC
Le 09/01/2017 à 21:05, Jean-Christophe DUBOIS a écrit :
Le 09/01/2017 à 20:06, Peter Maydell a écrit :
On 9 January 2017 at 19:04, mar.krzeminski <mar.krzemin...@gmail.com>
wrote:
W dniu 09.01.2017 o 11:46, Peter Maydell pisze:
Calling qemu_set_irq() in a device reset function is a bit
tricky, because in a full system reset the device at the other
end might have already reset or might not, and calling into
its handler function for the irq line change might provoke
an unwanted change of its state. We don't really have a coherent
model here but for the moment we just try to avoid calling
set_irq in a reset method.
JC, if you remove qemu_set_irq() call from reset, at least m25p80
behavior
should not change since m25p80 reset handler will reset it's whole
internal
state.
I noticed the reset function is also called from within the
register emulation too, so it's maybe not quite that simple...
OK, I'll fix it.
JC
thanks
-- PMM
