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-rw-r--r--hw/input/ps2.c123
1 files changed, 97 insertions, 26 deletions
diff --git a/hw/input/ps2.c b/hw/input/ps2.c
index 2105e51f0b..3636dfb686 100644
--- a/hw/input/ps2.c
+++ b/hw/input/ps2.c
@@ -94,12 +94,10 @@ typedef struct {
typedef struct {
PS2State common;
int scan_enabled;
- /* QEMU uses translated PC scancodes internally. To avoid multiple
- conversions we do the translation (if any) in the PS/2 emulation
- not the keyboard controller. */
int translate;
int scancode_set; /* 1=XT, 2=AT, 3=PS/2 */
int ledstate;
+ bool need_high_bit;
} PS2KbdState;
typedef struct {
@@ -138,6 +136,41 @@ static const unsigned char ps2_raw_keycode_set3[128] = {
19, 25, 57, 81, 83, 92, 95, 98, 99, 100, 101, 103, 104, 106, 109, 110
};
+static uint8_t translate_table[256] = {
+ 0xff, 0x43, 0x41, 0x3f, 0x3d, 0x3b, 0x3c, 0x58,
+ 0x64, 0x44, 0x42, 0x40, 0x3e, 0x0f, 0x29, 0x59,
+ 0x65, 0x38, 0x2a, 0x70, 0x1d, 0x10, 0x02, 0x5a,
+ 0x66, 0x71, 0x2c, 0x1f, 0x1e, 0x11, 0x03, 0x5b,
+ 0x67, 0x2e, 0x2d, 0x20, 0x12, 0x05, 0x04, 0x5c,
+ 0x68, 0x39, 0x2f, 0x21, 0x14, 0x13, 0x06, 0x5d,
+ 0x69, 0x31, 0x30, 0x23, 0x22, 0x15, 0x07, 0x5e,
+ 0x6a, 0x72, 0x32, 0x24, 0x16, 0x08, 0x09, 0x5f,
+ 0x6b, 0x33, 0x25, 0x17, 0x18, 0x0b, 0x0a, 0x60,
+ 0x6c, 0x34, 0x35, 0x26, 0x27, 0x19, 0x0c, 0x61,
+ 0x6d, 0x73, 0x28, 0x74, 0x1a, 0x0d, 0x62, 0x6e,
+ 0x3a, 0x36, 0x1c, 0x1b, 0x75, 0x2b, 0x63, 0x76,
+ 0x55, 0x56, 0x77, 0x78, 0x79, 0x7a, 0x0e, 0x7b,
+ 0x7c, 0x4f, 0x7d, 0x4b, 0x47, 0x7e, 0x7f, 0x6f,
+ 0x52, 0x53, 0x50, 0x4c, 0x4d, 0x48, 0x01, 0x45,
+ 0x57, 0x4e, 0x51, 0x4a, 0x37, 0x49, 0x46, 0x54,
+ 0x80, 0x81, 0x82, 0x41, 0x54, 0x85, 0x86, 0x87,
+ 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
+ 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97,
+ 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
+ 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
+ 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
+ 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
+ 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
+ 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
+ 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
+ 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7,
+ 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
+ 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7,
+ 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
+ 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
+ 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
+};
+
void ps2_queue(void *opaque, int b)
{
PS2State *s = (PS2State *)opaque;
@@ -152,29 +185,26 @@ void ps2_queue(void *opaque, int b)
s->update_irq(s->update_arg, 1);
}
-/*
- keycode is expressed as follow:
- bit 7 - 0 key pressed, 1 = key released
- bits 6-0 - translated scancode set 2
- */
+/* keycode is the untranslated scancode in the current scancode set. */
static void ps2_put_keycode(void *opaque, int keycode)
{
PS2KbdState *s = opaque;
trace_ps2_put_keycode(opaque, keycode);
qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
- /* XXX: add support for scancode set 1 */
- if (!s->translate && keycode < 0xe0 && s->scancode_set > 1) {
- if (keycode & 0x80) {
- ps2_queue(&s->common, 0xf0);
- }
- if (s->scancode_set == 2) {
- keycode = ps2_raw_keycode[keycode & 0x7f];
- } else if (s->scancode_set == 3) {
- keycode = ps2_raw_keycode_set3[keycode & 0x7f];
+
+ if (s->translate) {
+ if (keycode == 0xf0) {
+ s->need_high_bit = true;
+ } else if (s->need_high_bit) {
+ ps2_queue(&s->common, translate_table[keycode] | 0x80);
+ s->need_high_bit = false;
+ } else {
+ ps2_queue(&s->common, translate_table[keycode]);
}
- }
- ps2_queue(&s->common, keycode);
+ } else {
+ ps2_queue(&s->common, keycode);
+ }
}
static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
@@ -183,13 +213,41 @@ static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
PS2KbdState *s = (PS2KbdState *)dev;
int scancodes[3], i, count;
InputKeyEvent *key = evt->u.key.data;
+ int keycode;
qemu_system_wakeup_request(QEMU_WAKEUP_REASON_OTHER);
count = qemu_input_key_value_to_scancode(key->key,
key->down,
scancodes);
+
+ /* handle invalid key */
+ if (count == 1 && scancodes[0] == 0x00) {
+ ps2_queue(&s->common, 0x00);
+ return;
+ } else if (count == 1 && scancodes[0] == 0x80) {
+ if (s->translate || s->scancode_set == 1) {
+ ps2_queue(&s->common, 0x80);
+ } else {
+ ps2_queue(&s->common, 0xf0);
+ ps2_queue(&s->common, 0x00);
+ }
+ return;
+ }
+
for (i = 0; i < count; i++) {
- ps2_put_keycode(s, scancodes[i]);
+ /* XXX: add support for scancode set 1 */
+ keycode = scancodes[i];
+ if (keycode < 0xe0 && (s->scancode_set > 1 || s->translate)) {
+ if (keycode & 0x80) {
+ ps2_put_keycode(&s->common, 0xf0);
+ }
+ if (s->scancode_set == 1 || s->scancode_set == 2) {
+ keycode = ps2_raw_keycode[keycode & 0x7f];
+ } else if (s->scancode_set == 3) {
+ keycode = ps2_raw_keycode_set3[keycode & 0x7f];
+ }
+ }
+ ps2_put_keycode(s, keycode);
}
}
@@ -297,12 +355,7 @@ void ps2_write_keyboard(void *opaque, int val)
case KBD_CMD_SCANCODE:
if (val == 0) {
ps2_queue(&s->common, KBD_REPLY_ACK);
- if (s->scancode_set == 1)
- ps2_put_keycode(s, 0x43);
- else if (s->scancode_set == 2)
- ps2_put_keycode(s, 0x41);
- else if (s->scancode_set == 3)
- ps2_put_keycode(s, 0x3f);
+ ps2_put_keycode(s, s->scancode_set);
} else if (val >= 1 && val <= 3) {
s->scancode_set = val;
ps2_queue(&s->common, KBD_REPLY_ACK);
@@ -692,6 +745,23 @@ static const VMStateDescription vmstate_ps2_keyboard_ledstate = {
}
};
+static bool ps2_keyboard_need_high_bit_needed(void *opaque)
+{
+ PS2KbdState *s = opaque;
+ return s->need_high_bit != 0; /* 0 is the usual state */
+}
+
+static const VMStateDescription vmstate_ps2_keyboard_need_high_bit = {
+ .name = "ps2kbd/need_high_bit",
+ .version_id = 1,
+ .minimum_version_id = 1,
+ .needed = ps2_keyboard_need_high_bit_needed,
+ .fields = (VMStateField[]) {
+ VMSTATE_BOOL(need_high_bit, PS2KbdState),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static int ps2_kbd_post_load(void* opaque, int version_id)
{
PS2KbdState *s = (PS2KbdState*)opaque;
@@ -728,6 +798,7 @@ static const VMStateDescription vmstate_ps2_keyboard = {
},
.subsections = (const VMStateDescription*[]) {
&vmstate_ps2_keyboard_ledstate,
+ &vmstate_ps2_keyboard_need_high_bit,
NULL
}
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 09:45:52 +0000