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-rw-r--r--hw/core/machine.c1
-rw-r--r--hw/input/pckbd.c353
-rw-r--r--hw/input/ps2.c22
-rw-r--r--hw/input/trace-events2
4 files changed, 293 insertions, 85 deletions
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 1bf0e687b9..55b9bc7817 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -38,6 +38,7 @@
GlobalProperty hw_compat_6_0[] = {
{ "gpex-pcihost", "allow-unmapped-accesses", "false" },
+ { "i8042", "extended-state", "false"},
};
const size_t hw_compat_6_0_len = G_N_ELEMENTS(hw_compat_6_0);
diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c
index dde85ba6c6..baba62f357 100644
--- a/hw/input/pckbd.c
+++ b/hw/input/pckbd.c
@@ -23,13 +23,16 @@
*/
#include "qemu/osdep.h"
+#include "qemu/error-report.h"
#include "qemu/log.h"
+#include "qemu/timer.h"
#include "hw/isa/isa.h"
#include "migration/vmstate.h"
#include "hw/acpi/aml-build.h"
#include "hw/input/ps2.h"
#include "hw/irq.h"
#include "hw/input/i8042.h"
+#include "hw/qdev-properties.h"
#include "sysemu/reset.h"
#include "sysemu/runstate.h"
@@ -59,21 +62,6 @@
#define KBD_CCMD_RESET 0xFE /* Pulse bit 0 of the output port P2 = CPU reset. */
#define KBD_CCMD_NO_OP 0xFF /* Pulse no bits of the output port P2. */
-/* Keyboard Commands */
-#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */
-#define KBD_CMD_ECHO 0xEE
-#define KBD_CMD_GET_ID 0xF2 /* get keyboard ID */
-#define KBD_CMD_SET_RATE 0xF3 /* Set typematic rate */
-#define KBD_CMD_ENABLE 0xF4 /* Enable scanning */
-#define KBD_CMD_RESET_DISABLE 0xF5 /* reset and disable scanning */
-#define KBD_CMD_RESET_ENABLE 0xF6 /* reset and enable scanning */
-#define KBD_CMD_RESET 0xFF /* Reset */
-
-/* Keyboard Replies */
-#define KBD_REPLY_POR 0xAA /* Power on reset */
-#define KBD_REPLY_ACK 0xFA /* Command ACK */
-#define KBD_REPLY_RESEND 0xFE /* Command NACK, send the cmd again */
-
/* Status Register Bits */
#define KBD_STAT_OBF 0x01 /* Keyboard output buffer full */
#define KBD_STAT_IBF 0x02 /* Keyboard input buffer full */
@@ -106,41 +94,37 @@
*/
#define KBD_OUT_ONES 0xcc
-/* Mouse Commands */
-#define AUX_SET_SCALE11 0xE6 /* Set 1:1 scaling */
-#define AUX_SET_SCALE21 0xE7 /* Set 2:1 scaling */
-#define AUX_SET_RES 0xE8 /* Set resolution */
-#define AUX_GET_SCALE 0xE9 /* Get scaling factor */
-#define AUX_SET_STREAM 0xEA /* Set stream mode */
-#define AUX_POLL 0xEB /* Poll */
-#define AUX_RESET_WRAP 0xEC /* Reset wrap mode */
-#define AUX_SET_WRAP 0xEE /* Set wrap mode */
-#define AUX_SET_REMOTE 0xF0 /* Set remote mode */
-#define AUX_GET_TYPE 0xF2 /* Get type */
-#define AUX_SET_SAMPLE 0xF3 /* Set sample rate */
-#define AUX_ENABLE_DEV 0xF4 /* Enable aux device */
-#define AUX_DISABLE_DEV 0xF5 /* Disable aux device */
-#define AUX_SET_DEFAULT 0xF6
-#define AUX_RESET 0xFF /* Reset aux device */
-#define AUX_ACK 0xFA /* Command byte ACK. */
-
-#define MOUSE_STATUS_REMOTE 0x40
-#define MOUSE_STATUS_ENABLED 0x20
-#define MOUSE_STATUS_SCALE21 0x10
-
-#define KBD_PENDING_KBD 1
-#define KBD_PENDING_AUX 2
+#define KBD_PENDING_KBD_COMPAT 0x01
+#define KBD_PENDING_AUX_COMPAT 0x02
+#define KBD_PENDING_CTRL_KBD 0x04
+#define KBD_PENDING_CTRL_AUX 0x08
+#define KBD_PENDING_KBD KBD_MODE_DISABLE_KBD /* 0x10 */
+#define KBD_PENDING_AUX KBD_MODE_DISABLE_MOUSE /* 0x20 */
+
+#define KBD_MIGR_TIMER_PENDING 0x1
+
+#define KBD_OBSRC_KBD 0x01
+#define KBD_OBSRC_MOUSE 0x02
+#define KBD_OBSRC_CTRL 0x04
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;
+ bool extended_state;
+ bool extended_state_loaded;
/* Bitmask of devices with data available. */
uint8_t pending;
+ uint8_t obdata;
+ uint8_t cbdata;
+ uint8_t pending_tmp;
void *kbd;
void *mouse;
+ QEMUTimer *throttle_timer;
qemu_irq irq_kbd;
qemu_irq irq_mouse;
@@ -148,56 +132,123 @@ typedef struct KBDState {
hwaddr mask;
} KBDState;
-/* update irq and KBD_STAT_[MOUSE_]OBF */
/* XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be
incorrect, but it avoids having to simulate exact delays */
-static void kbd_update_irq(KBDState *s)
+static void kbd_update_irq_lines(KBDState *s)
{
int irq_kbd_level, irq_mouse_level;
irq_kbd_level = 0;
irq_mouse_level = 0;
+
+ if (s->status & KBD_STAT_OBF) {
+ if (s->status & KBD_STAT_MOUSE_OBF) {
+ if (s->mode & KBD_MODE_MOUSE_INT) {
+ irq_mouse_level = 1;
+ }
+ } else {
+ if ((s->mode & KBD_MODE_KBD_INT) &&
+ !(s->mode & KBD_MODE_DISABLE_KBD)) {
+ irq_kbd_level = 1;
+ }
+ }
+ }
+ qemu_set_irq(s->irq_kbd, irq_kbd_level);
+ qemu_set_irq(s->irq_mouse, irq_mouse_level);
+}
+
+static void kbd_deassert_irq(KBDState *s)
+{
+ s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF);
+ s->outport &= ~(KBD_OUT_OBF | KBD_OUT_MOUSE_OBF);
+ kbd_update_irq_lines(s);
+}
+
+static uint8_t kbd_pending(KBDState *s)
+{
+ if (s->extended_state) {
+ return s->pending & (~s->mode | ~(KBD_PENDING_KBD | KBD_PENDING_AUX));
+ } else {
+ return s->pending;
+ }
+}
+
+/* update irq and KBD_STAT_[MOUSE_]OBF */
+static void kbd_update_irq(KBDState *s)
+{
+ uint8_t pending = kbd_pending(s);
+
s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF);
s->outport &= ~(KBD_OUT_OBF | KBD_OUT_MOUSE_OBF);
- if (s->pending) {
+ if (pending) {
s->status |= KBD_STAT_OBF;
s->outport |= KBD_OUT_OBF;
- /* kbd data takes priority over aux data. */
- if (s->pending == KBD_PENDING_AUX) {
+ if (pending & KBD_PENDING_CTRL_KBD) {
+ s->obsrc = KBD_OBSRC_CTRL;
+ } else if (pending & KBD_PENDING_CTRL_AUX) {
s->status |= KBD_STAT_MOUSE_OBF;
s->outport |= KBD_OUT_MOUSE_OBF;
- if (s->mode & KBD_MODE_MOUSE_INT)
- irq_mouse_level = 1;
+ s->obsrc = KBD_OBSRC_CTRL;
+ } else if (pending & KBD_PENDING_KBD) {
+ s->obsrc = KBD_OBSRC_KBD;
} else {
- if ((s->mode & KBD_MODE_KBD_INT) &&
- !(s->mode & KBD_MODE_DISABLE_KBD))
- irq_kbd_level = 1;
+ s->status |= KBD_STAT_MOUSE_OBF;
+ s->outport |= KBD_OUT_MOUSE_OBF;
+ s->obsrc = KBD_OBSRC_MOUSE;
}
}
- qemu_set_irq(s->irq_kbd, irq_kbd_level);
- qemu_set_irq(s->irq_mouse, irq_mouse_level);
+ kbd_update_irq_lines(s);
+}
+
+static void kbd_safe_update_irq(KBDState *s)
+{
+ /*
+ * with KBD_STAT_OBF set, a call to kbd_read_data() will eventually call
+ * kbd_update_irq()
+ */
+ if (s->status & KBD_STAT_OBF) {
+ return;
+ }
+ /* the throttle timer is pending and will call kbd_update_irq() */
+ if (s->throttle_timer && timer_pending(s->throttle_timer)) {
+ return;
+ }
+ if (kbd_pending(s)) {
+ kbd_update_irq(s);
+ }
}
static void kbd_update_kbd_irq(void *opaque, int level)
{
- KBDState *s = (KBDState *)opaque;
+ KBDState *s = opaque;
- if (level)
+ if (level) {
s->pending |= KBD_PENDING_KBD;
- else
+ } else {
s->pending &= ~KBD_PENDING_KBD;
- kbd_update_irq(s);
+ }
+ kbd_safe_update_irq(s);
}
static void kbd_update_aux_irq(void *opaque, int level)
{
- KBDState *s = (KBDState *)opaque;
+ KBDState *s = opaque;
- if (level)
+ if (level) {
s->pending |= KBD_PENDING_AUX;
- else
+ } else {
s->pending &= ~KBD_PENDING_AUX;
- kbd_update_irq(s);
+ }
+ kbd_safe_update_irq(s);
+}
+
+static void kbd_throttle_timeout(void *opaque)
+{
+ KBDState *s = opaque;
+
+ if (kbd_pending(s)) {
+ kbd_update_irq(s);
+ }
}
static uint64_t kbd_read_status(void *opaque, hwaddr addr,
@@ -212,10 +263,25 @@ static uint64_t kbd_read_status(void *opaque, hwaddr addr,
static void kbd_queue(KBDState *s, int b, int aux)
{
- if (aux)
- ps2_queue(s->mouse, b);
- else
- ps2_queue(s->kbd, b);
+ if (s->extended_state) {
+ s->cbdata = b;
+ s->pending &= ~KBD_PENDING_CTRL_KBD & ~KBD_PENDING_CTRL_AUX;
+ s->pending |= aux ? KBD_PENDING_CTRL_AUX : KBD_PENDING_CTRL_KBD;
+ kbd_safe_update_irq(s);
+ } else {
+ ps2_queue(aux ? s->mouse : s->kbd, b);
+ }
+}
+
+static uint8_t kbd_dequeue(KBDState *s)
+{
+ uint8_t b = s->cbdata;
+
+ s->pending &= ~KBD_PENDING_CTRL_KBD & ~KBD_PENDING_CTRL_AUX;
+ if (kbd_pending(s)) {
+ kbd_update_irq(s);
+ }
+ return b;
}
static void outport_write(KBDState *s, uint32_t val)
@@ -265,6 +331,7 @@ static void kbd_write_command(void *opaque, hwaddr addr,
break;
case KBD_CCMD_MOUSE_ENABLE:
s->mode &= ~KBD_MODE_DISABLE_MOUSE;
+ kbd_safe_update_irq(s);
break;
case KBD_CCMD_TEST_MOUSE:
kbd_queue(s, 0x00, 0);
@@ -278,11 +345,10 @@ static void kbd_write_command(void *opaque, hwaddr addr,
break;
case KBD_CCMD_KBD_DISABLE:
s->mode |= KBD_MODE_DISABLE_KBD;
- kbd_update_irq(s);
break;
case KBD_CCMD_KBD_ENABLE:
s->mode &= ~KBD_MODE_DISABLE_KBD;
- kbd_update_irq(s);
+ kbd_safe_update_irq(s);
break;
case KBD_CCMD_READ_INPORT:
kbd_queue(s, 0x80, 0);
@@ -315,15 +381,24 @@ static uint64_t kbd_read_data(void *opaque, hwaddr addr,
unsigned size)
{
KBDState *s = opaque;
- uint32_t val;
- if (s->pending == KBD_PENDING_AUX)
- val = ps2_read_data(s->mouse);
- else
- val = ps2_read_data(s->kbd);
+ if (s->status & KBD_STAT_OBF) {
+ kbd_deassert_irq(s);
+ 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);
+ } else if (s->obsrc & KBD_OBSRC_CTRL) {
+ s->obdata = kbd_dequeue(s);
+ }
+ }
- trace_pckbd_kbd_read_data(val);
- return val;
+ trace_pckbd_kbd_read_data(s->obdata);
+ return s->obdata;
}
static void kbd_write_data(void *opaque, hwaddr addr,
@@ -336,12 +411,23 @@ static void kbd_write_data(void *opaque, hwaddr addr,
switch(s->write_cmd) {
case 0:
ps2_write_keyboard(s->kbd, val);
+ /* sending data to the keyboard reenables PS/2 communication */
+ s->mode &= ~KBD_MODE_DISABLE_KBD;
+ kbd_safe_update_irq(s);
break;
case KBD_CCMD_WRITE_MODE:
s->mode = val;
ps2_keyboard_set_translation(s->kbd, (s->mode & KBD_MODE_KCC) != 0);
- /* ??? */
- kbd_update_irq(s);
+ /*
+ * a write to the mode byte interrupt enable flags directly updates
+ * the irq lines
+ */
+ kbd_update_irq_lines(s);
+ /*
+ * a write to the mode byte disable interface flags may raise
+ * an irq if there is pending data in the PS/2 queues.
+ */
+ kbd_safe_update_irq(s);
break;
case KBD_CCMD_WRITE_OBUF:
kbd_queue(s, val, 0);
@@ -354,6 +440,9 @@ static void kbd_write_data(void *opaque, hwaddr addr,
break;
case KBD_CCMD_WRITE_MOUSE:
ps2_write_mouse(s->mouse, val);
+ /* sending data to the mouse reenables PS/2 communication */
+ s->mode &= ~KBD_MODE_DISABLE_MOUSE;
+ kbd_safe_update_irq(s);
break;
default:
break;
@@ -368,7 +457,11 @@ 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 | KBD_OUT_ONES;
- s->outport_present = false;
+ s->pending = 0;
+ kbd_deassert_irq(s);
+ if (s->throttle_timer) {
+ timer_del(s->throttle_timer);
+ }
}
static uint8_t kbd_outport_default(KBDState *s)
@@ -403,13 +496,99 @@ static const VMStateDescription vmstate_kbd_outport = {
}
};
+static int kbd_extended_state_pre_save(void *opaque)
+{
+ KBDState *s = opaque;
+
+ s->migration_flags = 0;
+ if (s->throttle_timer && timer_pending(s->throttle_timer)) {
+ s->migration_flags |= KBD_MIGR_TIMER_PENDING;
+ }
+
+ return 0;
+}
+
+static int kbd_extended_state_post_load(void *opaque, int version_id)
+{
+ KBDState *s = opaque;
+
+ if (s->migration_flags & KBD_MIGR_TIMER_PENDING) {
+ kbd_throttle_timeout(s);
+ }
+ s->extended_state_loaded = true;
+
+ return 0;
+}
+
+static bool kbd_extended_state_needed(void *opaque)
+{
+ KBDState *s = opaque;
+
+ return s->extended_state;
+}
+
+static const VMStateDescription vmstate_kbd_extended_state = {
+ .name = "pckbd/extended_state",
+ .post_load = kbd_extended_state_post_load,
+ .pre_save = kbd_extended_state_pre_save,
+ .needed = kbd_extended_state_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT32(migration_flags, KBDState),
+ VMSTATE_UINT32(obsrc, KBDState),
+ VMSTATE_UINT8(obdata, KBDState),
+ VMSTATE_UINT8(cbdata, KBDState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static int kbd_pre_save(void *opaque)
+{
+ KBDState *s = opaque;
+
+ if (s->extended_state) {
+ s->pending_tmp = s->pending;
+ } else {
+ s->pending_tmp = 0;
+ if (s->pending & KBD_PENDING_KBD) {
+ s->pending_tmp |= KBD_PENDING_KBD_COMPAT;
+ }
+ if (s->pending & KBD_PENDING_AUX) {
+ s->pending_tmp |= KBD_PENDING_AUX_COMPAT;
+ }
+ }
+ return 0;
+}
+
+static int kbd_pre_load(void *opaque)
+{
+ KBDState *s = opaque;
+
+ s->outport_present = false;
+ s->extended_state_loaded = false;
+ return 0;
+}
+
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;
+ s->pending = s->pending_tmp;
+ if (!s->extended_state_loaded) {
+ s->obsrc = s->status & KBD_STAT_OBF ?
+ (s->status & KBD_STAT_MOUSE_OBF ? KBD_OBSRC_MOUSE : KBD_OBSRC_KBD) :
+ 0;
+ if (s->pending & KBD_PENDING_KBD_COMPAT) {
+ s->pending |= KBD_PENDING_KBD;
+ }
+ if (s->pending & KBD_PENDING_AUX_COMPAT) {
+ s->pending |= KBD_PENDING_AUX;
+ }
+ }
+ /* clear all unused flags */
+ s->pending &= KBD_PENDING_CTRL_KBD | KBD_PENDING_CTRL_AUX |
+ KBD_PENDING_KBD | KBD_PENDING_AUX;
return 0;
}
@@ -417,16 +596,19 @@ static const VMStateDescription vmstate_kbd = {
.name = "pckbd",
.version_id = 3,
.minimum_version_id = 3,
+ .pre_load = kbd_pre_load,
.post_load = kbd_post_load,
+ .pre_save = kbd_pre_save,
.fields = (VMStateField[]) {
VMSTATE_UINT8(write_cmd, KBDState),
VMSTATE_UINT8(status, KBDState),
VMSTATE_UINT8(mode, KBDState),
- VMSTATE_UINT8(pending, KBDState),
+ VMSTATE_UINT8(pending_tmp, KBDState),
VMSTATE_END_OF_LIST()
},
.subsections = (const VMStateDescription*[]) {
&vmstate_kbd_outport,
+ &vmstate_kbd_extended_state,
NULL
}
};
@@ -472,6 +654,8 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
s->irq_mouse = mouse_irq;
s->mask = mask;
+ s->extended_state = true;
+
vmstate_register(NULL, 0, &vmstate_kbd, s);
memory_region_init_io(region, NULL, &i8042_mmio_ops, s, "i8042", size);
@@ -485,6 +669,7 @@ struct ISAKBDState {
ISADevice parent_obj;
KBDState kbd;
+ bool kbd_throttle;
MemoryRegion io[2];
};
@@ -557,6 +742,13 @@ static void i8042_realizefn(DeviceState *dev, Error **errp)
s->kbd = ps2_kbd_init(kbd_update_kbd_irq, s);
s->mouse = ps2_mouse_init(kbd_update_aux_irq, s);
+ if (isa_s->kbd_throttle && !isa_s->kbd.extended_state) {
+ warn_report(TYPE_I8042 ": can't enable kbd-throttle without"
+ " extended-state, disabling kbd-throttle");
+ } else if (isa_s->kbd_throttle) {
+ s->throttle_timer = timer_new_us(QEMU_CLOCK_VIRTUAL,
+ kbd_throttle_timeout, s);
+ }
qemu_register_reset(kbd_reset, s);
}
@@ -588,11 +780,18 @@ static void i8042_build_aml(ISADevice *isadev, Aml *scope)
aml_append(scope, mou);
}
+static Property i8042_properties[] = {
+ DEFINE_PROP_BOOL("extended-state", ISAKBDState, kbd.extended_state, true),
+ DEFINE_PROP_BOOL("kbd-throttle", ISAKBDState, kbd_throttle, false),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
static void i8042_class_initfn(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
ISADeviceClass *isa = ISA_DEVICE_CLASS(klass);
+ device_class_set_props(dc, i8042_properties);
dc->realize = i8042_realizefn;
dc->vmsd = &vmstate_kbd_isa;
isa->build_aml = i8042_build_aml;
diff --git a/hw/input/ps2.c b/hw/input/ps2.c
index 72cdb80ae1..8dd482c1f6 100644
--- a/hw/input/ps2.c
+++ b/hw/input/ps2.c
@@ -212,8 +212,12 @@ void ps2_raise_irq(PS2State *s)
void ps2_queue(PS2State *s, int b)
{
+ if (PS2_QUEUE_SIZE - s->queue.count < 1) {
+ return;
+ }
+
ps2_queue_noirq(s, b);
- s->update_irq(s->update_arg, 1);
+ ps2_raise_irq(s);
}
void ps2_queue_2(PS2State *s, int b1, int b2)
@@ -224,7 +228,7 @@ void ps2_queue_2(PS2State *s, int b1, int b2)
ps2_queue_noirq(s, b1);
ps2_queue_noirq(s, b2);
- s->update_irq(s->update_arg, 1);
+ ps2_raise_irq(s);
}
void ps2_queue_3(PS2State *s, int b1, int b2, int b3)
@@ -236,7 +240,7 @@ void ps2_queue_3(PS2State *s, int b1, int b2, int b3)
ps2_queue_noirq(s, b1);
ps2_queue_noirq(s, b2);
ps2_queue_noirq(s, b3);
- s->update_irq(s->update_arg, 1);
+ ps2_raise_irq(s);
}
void ps2_queue_4(PS2State *s, int b1, int b2, int b3, int b4)
@@ -249,7 +253,7 @@ void ps2_queue_4(PS2State *s, int b1, int b2, int b3, int b4)
ps2_queue_noirq(s, b2);
ps2_queue_noirq(s, b3);
ps2_queue_noirq(s, b4);
- s->update_irq(s->update_arg, 1);
+ ps2_raise_irq(s);
}
/* keycode is the untranslated scancode in the current scancode set. */
@@ -293,7 +297,8 @@ static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
qcode = qemu_input_key_value_to_qcode(key->key);
mod = ps2_modifier_bit(qcode);
- trace_ps2_keyboard_event(s, qcode, key->down, mod, s->modifiers);
+ trace_ps2_keyboard_event(s, qcode, key->down, mod,
+ s->modifiers, s->scancode_set, s->translate);
if (key->down) {
s->modifiers |= mod;
} else {
@@ -515,7 +520,9 @@ uint32_t ps2_read_data(PS2State *s)
/* reading deasserts IRQ */
s->update_irq(s->update_arg, 0);
/* reassert IRQs if data left */
- s->update_irq(s->update_arg, q->count != 0);
+ if (q->count) {
+ s->update_irq(s->update_arg, 1);
+ }
}
return val;
}
@@ -645,7 +652,8 @@ void ps2_keyboard_set_translation(void *opaque, int mode)
static int ps2_mouse_send_packet(PS2MouseState *s)
{
- const int needed = 3 + (s->mouse_type - 2);
+ /* IMPS/2 and IMEX send 4 bytes, PS2 sends 3 bytes */
+ const int needed = s->mouse_type ? 4 : 3;
unsigned int b;
int dx1, dy1, dz1;
diff --git a/hw/input/trace-events b/hw/input/trace-events
index 33741e74f5..109bdf7a18 100644
--- a/hw/input/trace-events
+++ b/hw/input/trace-events
@@ -30,7 +30,7 @@ pckbd_kbd_write_data(uint64_t val) "0x%02"PRIx64
# ps2.c
ps2_put_keycode(void *opaque, int keycode) "%p keycode 0x%02x"
-ps2_keyboard_event(void *opaque, int qcode, int down, unsigned int modifier, unsigned int modifiers) "%p qcode %d down %d modifier 0x%x modifiers 0x%x"
+ps2_keyboard_event(void *opaque, int qcode, int down, unsigned int modifier, unsigned int modifiers, int set, int xlate) "%p qcode %d down %d modifier 0x%x modifiers 0x%x set %d xlate %d"
ps2_read_data(void *opaque) "%p"
ps2_set_ledstate(void *s, int ledstate) "%p ledstate %d"
ps2_reset_keyboard(void *s) "%p"