diff options
| author | Markus Armbruster <armbru@redhat.com> | 2013-11-28 17:27:02 +0100 |
|---|---|---|
| committer | Andreas Färber <afaerber@suse.de> | 2013-12-23 00:27:23 +0100 |
| commit | f3b176402fa92149320dcd5479916ccb39cfa0a8 (patch) | |
| tree | 297212eb1153bf3f1846f141dcfdcbcacb99bdee /hw/intc/i8259_common.c | |
| parent | 04916ee9fb8ff4be4d9f612b85aef009ec57b0b4 (diff) | |
isa: Clean up use of cannot_instantiate_with_device_add_yet
Drop it when there's no obvious reason why device_add could not work.
Else keep and document why.
* isa-fdc: drop
* i8042: drop, even though its I/O base is hardcoded (because you
could conceivably still add one to a board that has none), and even
though PC board code wires up the A20 line (because that wiring is
optional)
* port92: keep because it needs additional wiring by port92_init()
* mc146818rtc: keep because it needs to be wired up by rtc_init()
* m48t59_isa: keep because needs to be wired up by m48t59_init_isa()
* isa-pit, kvm-pit: keep (in their abstract base pic-common) because
the PIT needs additional wiring by board code, depending on HPET
presence
* pcspk: keep because of pointer property pit, and because realize
sets global pcspk_state
* vmmouse: keep because of pointer property ps2_mouse
* vmport: keep because realize sets global port_state
* isa-i8259, kvm-i8259: keep (in their abstract base pic-common),
because the PICs' IRQ input lines are set up by board code, and the
wiring of the slave to the master is hard-coded in device model code
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Diffstat (limited to 'hw/intc/i8259_common.c')
| -rw-r--r-- | hw/intc/i8259_common.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/hw/intc/i8259_common.c b/hw/intc/i8259_common.c index 2acdbfed17..9d293999be 100644 --- a/hw/intc/i8259_common.c +++ b/hw/intc/i8259_common.c @@ -135,9 +135,15 @@ static void pic_common_class_init(ObjectClass *klass, void *data) DeviceClass *dc = DEVICE_CLASS(klass); dc->vmsd = &vmstate_pic_common; - dc->cannot_instantiate_with_device_add_yet = true; /* FIXME explain why */ dc->props = pic_properties_common; dc->realize = pic_common_realize; + /* + * Reason: unlike ordinary ISA devices, the PICs need additional + * wiring: its IRQ input lines are set up by board code, and the + * wiring of the slave to the master is hard-coded in device model + * code. + */ + dc->cannot_instantiate_with_device_add_yet = true; } static const TypeInfo pic_common_type = { |