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Add KBD_CMD_SCANCODE command.

Browse Source 
(Hervé Poussineau)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4082 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-03-18 06:54:34 +00:00
parent cf7a2fe2eb
commit e7d9395650
1 changed files with 34 additions and 5 deletions
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39
hw/ps2.c
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@ -34,6 +34,7 @@
/* Keyboard Commands */
#define KBD_CMD_SET_LEDS 0xED /* Set keyboard leds */
#define KBD_CMD_ECHO 0xEE
#define KBD_CMD_SCANCODE 0xF0 /* Get/set scancode set */
#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 */
@ -89,6 +90,7 @@ typedef struct {
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 */
} PS2KbdState;
typedef struct {
@ -131,10 +133,13 @@ void ps2_queue(void *opaque, int b)
s->update_irq(s->update_arg, 1);
}
/* keycode is expressed in scancode set 2 */
static void ps2_put_keycode(void *opaque, int keycode)
{
PS2KbdState *s = opaque;
if (!s->translate && keycode < 0xe0)
/* XXX: add support for scancode sets 1 and 3 */
if (!s->translate && keycode < 0xe0 && s->scancode_set == 2)
{
if (keycode & 0x80)
ps2_queue(&s->common, 0xf0);
@ -174,6 +179,7 @@ uint32_t ps2_read_data(void *opaque)
static void ps2_reset_keyboard(PS2KbdState *s)
{
s->scan_enabled = 1;
s->scancode_set = 2;
}
void ps2_write_keyboard(void *opaque, int val)
@ -192,8 +198,9 @@ void ps2_write_keyboard(void *opaque, int val)
break;
case KBD_CMD_GET_ID:
ps2_queue(&s->common, KBD_REPLY_ACK);
ps2_queue(&s->common, 0xab);
ps2_queue(&s->common, 0x83);
/* We emulate a MF2 AT keyboard here */
ps2_put_keycode(s, 0xab);
ps2_put_keycode(s, 0x83);
break;
case KBD_CMD_ECHO:
ps2_queue(&s->common, KBD_CMD_ECHO);
@ -202,6 +209,7 @@ void ps2_write_keyboard(void *opaque, int val)
s->scan_enabled = 1;
ps2_queue(&s->common, KBD_REPLY_ACK);
break;
case KBD_CMD_SCANCODE:
case KBD_CMD_SET_LEDS:
case KBD_CMD_SET_RATE:
s->common.write_cmd = val;
@ -227,6 +235,21 @@ void ps2_write_keyboard(void *opaque, int val)
break;
}
break;
case KBD_CMD_SCANCODE:
if (val == 0) {
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);
} else {
if (val >= 1 && val <= 3)
s->scancode_set = val;
ps2_queue(&s->common, KBD_REPLY_ACK);
}
s->common.write_cmd = -1;
break;
case KBD_CMD_SET_LEDS:
ps2_queue(&s->common, KBD_REPLY_ACK);
s->common.write_cmd = -1;
@ -493,6 +516,7 @@ static void ps2_kbd_save(QEMUFile* f, void* opaque)
ps2_common_save (f, &s->common);
qemu_put_be32(f, s->scan_enabled);
qemu_put_be32(f, s->translate);
qemu_put_be32(f, s->scancode_set);
}
static void ps2_mouse_save(QEMUFile* f, void* opaque)
@ -516,12 +540,16 @@ static int ps2_kbd_load(QEMUFile* f, void* opaque, int version_id)
{
PS2KbdState *s = (PS2KbdState*)opaque;
if (version_id != 2)
if (version_id != 2 && version_id != 3)
return -EINVAL;
ps2_common_load (f, &s->common);
s->scan_enabled=qemu_get_be32(f);
s->translate=qemu_get_be32(f);
if (version_id == 3)
s->scancode_set=qemu_get_be32(f);
else
s->scancode_set=2;
return 0;
}
@ -552,8 +580,9 @@ void *ps2_kbd_init(void (*update_irq)(void *, int), void *update_arg)
s->common.update_irq = update_irq;
s->common.update_arg = update_arg;
s->scancode_set = 2;
ps2_reset(&s->common);
register_savevm("ps2kbd", 0, 2, ps2_kbd_save, ps2_kbd_load, s);
register_savevm("ps2kbd", 0, 3, ps2_kbd_save, ps2_kbd_load, s);
qemu_add_kbd_event_handler(ps2_put_keycode, s);
qemu_register_reset(ps2_reset, &s->common);
return s;