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[PATCH 07/10] pckbd: add state variable for interrupt source
From: |
Volker Rümelin |
Subject: |
[PATCH 07/10] pckbd: add state variable for interrupt source |
Date: |
Wed, 5 May 2021 21:21:30 +0200 |
Currently there is only one flag to distinguish between two
interrupt sources and there are no available flags for more
sources. Add an internal state variable to store the interrupt
source. The next patch will introduce an additional interrupt
source. There is no functional change.
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
---
hw/input/pckbd.c | 22 +++++++++++++++++-----
1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c
index f45aebb6b8..f8f3859b17 100644
--- a/hw/input/pckbd.c
+++ b/hw/input/pckbd.c
@@ -135,12 +135,16 @@
#define KBD_MIGR_TIMER_PENDING 0x1
+#define KBD_OBSRC_KBD 0x01
+#define KBD_OBSRC_MOUSE 0x02
+
typedef struct KBDState {
uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
uint8_t status;
uint8_t mode;
uint8_t outport;
uint32_t migration_flags;
+ uint32_t obsrc;
bool outport_present;
/* Bitmask of devices with data available. */
uint8_t pending;
@@ -198,6 +202,9 @@ static void kbd_update_irq(KBDState *s)
if (s->pending == KBD_PENDING_AUX) {
s->status |= KBD_STAT_MOUSE_OBF;
s->outport |= KBD_OUT_MOUSE_OBF;
+ s->obsrc = KBD_OBSRC_MOUSE;
+ } else {
+ s->obsrc = KBD_OBSRC_KBD;
}
}
kbd_update_irq_lines(s);
@@ -371,18 +378,17 @@ static uint64_t kbd_read_data(void *opaque, hwaddr addr,
unsigned size)
{
KBDState *s = opaque;
- uint8_t status = s->status;
- if (status & KBD_STAT_OBF) {
+ if (s->status & KBD_STAT_OBF) {
kbd_deassert_irq(s);
- if (status & KBD_STAT_MOUSE_OBF) {
- s->obdata = ps2_read_data(s->mouse);
- } else {
+ if (s->obsrc & KBD_OBSRC_KBD) {
if (s->throttle_timer) {
timer_mod(s->throttle_timer,
qemu_clock_get_us(QEMU_CLOCK_VIRTUAL) + 1000);
}
s->obdata = ps2_read_data(s->kbd);
+ } else if (s->obsrc & KBD_OBSRC_MOUSE) {
+ s->obdata = ps2_read_data(s->mouse);
}
}
@@ -499,6 +505,11 @@ static int kbd_post_load(void *opaque, int version_id)
s->outport = kbd_outport_default(s);
}
s->outport_present = false;
+ if (version_id < 4) {
+ s->obsrc = s->status & KBD_STAT_OBF ?
+ (s->status & KBD_STAT_MOUSE_OBF ? KBD_OBSRC_MOUSE : KBD_OBSRC_KBD)
:
+ 0;
+ }
if (s->migration_flags & KBD_MIGR_TIMER_PENDING) {
kbd_throttle_timeout(s);
}
@@ -517,6 +528,7 @@ static const VMStateDescription vmstate_kbd = {
VMSTATE_UINT8(mode, KBDState),
VMSTATE_UINT8(pending, KBDState),
VMSTATE_UINT32_V(migration_flags, KBDState, 4),
+ VMSTATE_UINT32_V(obsrc, KBDState, 4),
VMSTATE_UINT8_V(obdata, KBDState, 4),
VMSTATE_END_OF_LIST()
},
--
2.26.2
- [PATCH 05/10] pckbd: don't update OBF flags if KBD_STAT_OBF is set, (continued)
- [PATCH 05/10] pckbd: don't update OBF flags if KBD_STAT_OBF is set, Volker Rümelin, 2021/05/05
- [PATCH 10/10] pckbd: remove duplicated keyboard and mouse defines, Volker Rümelin, 2021/05/05
- [PATCH 06/10] pckbd: PS/2 keyboard throttle, Volker Rümelin, 2021/05/05
- [PATCH 08/10] pckbd: add controller response queue, Volker Rümelin, 2021/05/05
- [PATCH 04/10] pckbd: split out interrupt line changing code, Volker Rümelin, 2021/05/05
- [PATCH 01/10] ps2: fix mouse stream corruption, Volker Rümelin, 2021/05/05
- [PATCH 09/10] pckbd: correctly disable PS/2 communication, Volker Rümelin, 2021/05/05
- [PATCH 07/10] pckbd: add state variable for interrupt source,
Volker Rümelin <=