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pckbd: adding new fields to vmstate

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This patch adds outport to VMState to allow correct saving and restoring
the state of PC keyboard controller.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2014-08-28 15:19:14 +04:00 committed by Paolo Bonzini
parent 0b102153e0
commit a28fe7e3f6
1 changed files with 51 additions and 0 deletions
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51
hw/input/pckbd.c
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@ -131,6 +131,7 @@ typedef struct KBDState {
uint8_t status;
uint8_t mode;
uint8_t outport;
bool outport_present;
/* Bitmask of devices with data available. */
uint8_t pending;
void *kbd;
@ -367,18 +368,68 @@ static void kbd_reset(void *opaque)
s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT;
s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED;
s->outport = KBD_OUT_RESET | KBD_OUT_A20;
s->outport_present = false;
}
static uint8_t kbd_outport_default(KBDState *s)
{
return KBD_OUT_RESET | KBD_OUT_A20
| (s->status & KBD_STAT_OBF ? KBD_OUT_OBF : 0)
| (s->status & KBD_STAT_MOUSE_OBF ? KBD_OUT_MOUSE_OBF : 0);
}
static int kbd_outport_post_load(void *opaque, int version_id)
{
KBDState *s = opaque;
s->outport_present = true;
return 0;
}
static const VMStateDescription vmstate_kbd_outport = {
.name = "pckbd_outport",
.version_id = 1,
.minimum_version_id = 1,
.post_load = kbd_outport_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT8(outport, KBDState),
VMSTATE_END_OF_LIST()
}
};
static bool kbd_outport_needed(void *opaque)
{
KBDState *s = opaque;
return s->outport != kbd_outport_default(s);
}
static int kbd_post_load(void *opaque, int version_id)
{
KBDState *s = opaque;
if (!s->outport_present) {
s->outport = kbd_outport_default(s);
}
s->outport_present = false;
return 0;
}
static const VMStateDescription vmstate_kbd = {
.name = "pckbd",
.version_id = 3,
.minimum_version_id = 3,
.post_load = kbd_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT8(write_cmd, KBDState),
VMSTATE_UINT8(status, KBDState),
VMSTATE_UINT8(mode, KBDState),
VMSTATE_UINT8(pending, KBDState),
VMSTATE_END_OF_LIST()
},
.subsections = (VMStateSubsection[]) {
{
.vmsd = &vmstate_kbd_outport,
.needed = kbd_outport_needed,
},
VMSTATE_END_OF_LIST()
}
};