static int
get_kbd_echo(KBDC kbdc)
{
/* enable the keyboard port, but disable the keyboard intr. */
if (setup_kbd_port(kbdc, TRUE, FALSE))
/* CONTROLLER ERROR: there is very little we can do... */
return ENXIO;
/* see if something is present */
write_kbd_command(kbdc, KBDC_ECHO);
if (read_kbd_data(kbdc) != KBD_ECHO) {
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
return ENXIO;
}
/* enable the keyboard port and intr. */
if (setup_kbd_port(kbdc, TRUE, TRUE)) {
/*
* CONTROLLER ERROR
* This is serious; the keyboard intr is left disabled!
*/
return ENXIO;
}
return 0;
}
static int
init_keyboard(KBDC kbdc, int *type, int flags)
{
int codeset;
int id;
int c;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return EIO;
}
/* temporarily block data transmission from the keyboard */
write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
/* save the current controller command byte */
empty_both_buffers(kbdc, 200);
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to get the current command byte value.\n");
return EIO;
}
if (bootverbose)
printf("atkbd: the current kbd controller command byte %04x\n",
c);
#if 0
/* override the keyboard lock switch */
c |= KBD_OVERRIDE_KBD_LOCK;
#endif
/* enable the keyboard port, but disable the keyboard intr. */
if (setup_kbd_port(kbdc, TRUE, FALSE)) {
/* CONTROLLER ERROR: there is very little we can do... */
printf("atkbd: unable to set the command byte.\n");
kbdc_lock(kbdc, FALSE);
return EIO;
}
/*
* Check if we have an XT keyboard before we attempt to reset it.
* The procedure assumes that the keyboard and the controller have
* been set up properly by BIOS and have not been messed up
* during the boot process.
*/
codeset = -1;
if (flags & KB_CONF_ALT_SCANCODESET)
/* the user says there is a XT keyboard */
codeset = 1;
#ifdef KBD_DETECT_XT_KEYBOARD
else if ((c & KBD_TRANSLATION) == 0) {
/* SET_SCANCODE_SET is not always supported; ignore error */
if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0)
== KBD_ACK)
codeset = read_kbd_data(kbdc);
}
if (bootverbose)
printf("atkbd: scancode set %d\n", codeset);
#endif /* KBD_DETECT_XT_KEYBOARD */
*type = KB_OTHER;
id = get_kbd_id(kbdc);
switch(id) {
case 0x41ab: /* 101/102/... Enhanced */
case 0x83ab: /* ditto */
case 0x54ab: /* SpaceSaver */
case 0x84ab: /* ditto */
#if 0
case 0x90ab: /* 'G' */
case 0x91ab: /* 'P' */
case 0x92ab: /* 'A' */
#endif
*type = KB_101;
break;
case -1: /* AT 84 keyboard doesn't return ID */
*type = KB_84;
break;
default:
break;
}
if (bootverbose)
printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type);
/* reset keyboard hardware */
if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) {
/*
* KEYBOARD ERROR
* Keyboard reset may fail either because the keyboard
* doen't exist, or because the keyboard doesn't pass
* the self-test, or the keyboard controller on the
* motherboard and the keyboard somehow fail to shake hands.
* It is just possible, particularly in the last case,
* that the keyboard controller may be left in a hung state.
* test_controller() and test_kbd_port() appear to bring
* the keyboard controller back (I don't know why and how,
* though.)
*/
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
/*
* We could disable the keyboard port and interrupt... but,
* the keyboard may still exist (see above).
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
if (bootverbose)
printf("atkbd: failed to reset the keyboard.\n");
return EIO;
}
/*
* Allow us to set the XT_KEYBD flag so that keyboards
* such as those on the IBM ThinkPad laptop computers can be used
* with the standard console driver.
*/
if (codeset == 1) {
if (send_kbd_command_and_data(kbdc,
KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
/* XT kbd doesn't need scan code translation */
c &= ~KBD_TRANSLATION;
} else {
/*
* KEYBOARD ERROR
* The XT kbd isn't usable unless the proper scan
* code set is selected.
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to set the XT keyboard mode.\n");
return EIO;
}
}
#if defined(__sparc64__)
if (send_kbd_command_and_data(
kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) {
printf("atkbd: can't set translation.\n");
}
c |= KBD_TRANSLATION;
#endif
/* enable the keyboard port and intr. */
if (!set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK,
(c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
| KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) {
/*
* CONTROLLER ERROR
* This is serious; we are left with the disabled
* keyboard intr.
*/
set_controller_command_byte(kbdc, 0xff, c);
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to enable the keyboard port and intr.\n");
return EIO;
}
kbdc_lock(kbdc, FALSE);
return 0;
}
static int
probe_keyboard(KBDC kbdc, int flags)
{
/*
* Don't try to print anything in this function. The low-level
* console may not have been initialized yet...
*/
int err;
int c;
int m;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return ENXIO;
}
/* temporarily block data transmission from the keyboard */
write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
/* flush any noise in the buffer */
empty_both_buffers(kbdc, 100);
/* save the current keyboard controller command byte */
m = kbdc_get_device_mask(kbdc) & ~KBD_KBD_CONTROL_BITS;
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_set_device_mask(kbdc, m);
kbdc_lock(kbdc, FALSE);
return ENXIO;
}
/*
* The keyboard may have been screwed up by the boot block.
* We may just be able to recover from error by testing the controller
* and the keyboard port. The controller command byte needs to be
* saved before this recovery operation, as some controllers seem
* to set the command byte to particular values.
*/
test_controller(kbdc);
if (!(flags & KB_CONF_NO_PROBE_TEST))
test_kbd_port(kbdc);
err = get_kbd_echo(kbdc);
/*
* Even if the keyboard doesn't seem to be present (err != 0),
* we shall enable the keyboard port and interrupt so that
* the driver will be operable when the keyboard is attached
* to the system later. It is NOT recommended to hot-plug
* the AT keyboard, but many people do so...
*/
kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS);
setup_kbd_port(kbdc, TRUE, TRUE);
#if 0
if (err == 0) {
kbdc_set_device_mask(kbdc, m | KBD_KBD_CONTROL_BITS);
} else {
/* try to restore the command byte as before */
set_controller_command_byte(kbdc, 0xff, c);
kbdc_set_device_mask(kbdc, m);
}
#endif
kbdc_lock(kbdc, FALSE);
return err;
}
static int
init_keyboard(KBDC kbdc, int *type, int flags)
{
int codeset;
int id;
int c;
int mux_version;
int mux_mask;
int mux_val;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return EIO;
}
/*
* XXX block data transmission from the keyboard. This can cause
* the keyboard to stop sending keystrokes even when re-enabled
* under certain circumstances if not followed by a full reset.
*/
write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
#if 0
if (atkbd_setmuxmode(kbdc, 1, &mux_version)) {
kprintf("atkbd: no mux\n");
mux_version = -1;
} else {
kprintf("atkbd: mux present version %d\n", mux_version);
}
#else
mux_version = -1;
#endif
/* save the current controller command byte */
empty_both_buffers(kbdc, 200);
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_lock(kbdc, FALSE);
kprintf("atkbd: unable to get the current command byte value.\n");
return EIO;
}
if (bootverbose)
kprintf("atkbd: the current kbd controller command byte %04x\n",
c);
#if 0
/* override the keyboard lock switch */
c |= KBD_OVERRIDE_KBD_LOCK;
#endif
/* enable the keyboard port, but disable the keyboard intr. */
if (setup_kbd_port(kbdc, TRUE, FALSE)) {
/* CONTROLLER ERROR: there is very little we can do... */
kprintf("atkbd: unable to set the command byte.\n");
kbdc_lock(kbdc, FALSE);
return EIO;
}
/* default codeset */
codeset = -1;
/* reset keyboard hardware */
if (!(flags & KB_CONF_NO_RESET) && !reset_kbd(kbdc)) {
/*
* KEYBOARD ERROR
* Keyboard reset may fail either because the keyboard
* doen't exist, or because the keyboard doesn't pass
* the self-test, or the keyboard controller on the
* motherboard and the keyboard somehow fail to shake hands.
* It is just possible, particularly in the last case,
* that the keyoard controller may be left in a hung state.
* test_controller() and test_kbd_port() appear to bring
* the keyboard controller back (I don't know why and how,
* though.)
*/
empty_both_buffers(kbdc, 10);
test_controller(kbdc);
test_kbd_port(kbdc);
/*
* We could disable the keyboard port and interrupt... but,
* the keyboard may still exist (see above).
*/
set_controller_command_byte(kbdc, KBD_KBD_CONTROL_BITS, c);
kbdc_lock(kbdc, FALSE);
if (bootverbose)
kprintf("atkbd: failed to reset the keyboard.\n");
return EIO;
}
/*
* Check if we have an XT keyboard before we attempt to reset it.
* The procedure assumes that the keyboard and the controller have
* been set up properly by BIOS and have not been messed up
* during the boot process.
*/
codeset = -1;
if (flags & KB_CONF_ALT_SCANCODESET)
/* the user says there is a XT keyboard */
codeset = 1;
#ifdef KBD_DETECT_XT_KEYBOARD
else if ((c & KBD_TRANSLATION) == 0) {
/* SET_SCANCODE_SET is not always supported; ignore error */
if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0)
== KBD_ACK)
codeset = read_kbd_data(kbdc);
}
#endif /* KBD_DETECT_XT_KEYBOARD */
if (bootverbose)
kprintf("atkbd: scancode set %d\n", codeset);
/*
* Get the keyboard id.
*/
*type = KB_OTHER;
id = get_kbd_id(kbdc, ATKBD_CMD_GETID);
switch(id) {
case 0x41ab: /* 101/102/... Enhanced */
case 0x83ab: /* ditto */
case 0x54ab: /* SpaceSaver */
case 0x84ab: /* ditto */
#if 0
case 0x90ab: /* 'G' */
case 0x91ab: /* 'P' */
case 0x92ab: /* 'A' */
#endif
*type = KB_101;
break;
case -1: /* AT 84 keyboard doesn't return ID */
*type = KB_84;
break;
default:
break;
}
if (bootverbose)
kprintf("atkbd: keyboard ID 0x%x (%d)\n", id, *type);
/*
* Allow us to set the XT_KEYBD flag in UserConfig so that keyboards
* such as those on the IBM ThinkPad laptop computers can be used
* with the standard console driver.
*/
if (codeset == 1) {
if (send_kbd_command_and_data(kbdc,
KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
/* XT kbd doesn't need scan code translation */
c &= ~KBD_TRANSLATION;
} else {
/*
* KEYBOARD ERROR
* The XT kbd isn't usable unless the proper scan
* code set is selected.
*/
set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS, c);
kbdc_lock(kbdc, FALSE);
kprintf("atkbd: unable to set the XT keyboard mode.\n");
return EIO;
}
}
#if 0
if (send_kbd_command_and_data(kbdc, ATKBD_CMD_EX_ENABLE, 0x71) != KBD_ACK)
kprintf("atkbd: can't CMD_EX_ENABLE\n");
if (send_kbd_command(kbdc, ATKBD_CMD_SETALL_MB) != KBD_ACK)
kprintf("atkbd: can't SETALL_MB\n");
if (send_kbd_command(kbdc, ATKBD_CMD_SETALL_MBR) != KBD_ACK)
kprintf("atkbd: can't SETALL_MBR\n");
#endif
#if 0
if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SSCANSET, 2) != KBD_ACK)
kprintf("atkbd: can't SSCANSET\n");
if (send_kbd_command_and_data(kbdc, ATKBD_CMD_GSCANSET, 0) != KBD_ACK)
kprintf("atkbd: can't SSCANSET\n");
else
kprintf("atkbd: scanset %d\n", read_kbd_data(kbdc));
#endif
#if 0
kprintf("atkbd: id %04x\n", get_kbd_id(kbdc, ATKBD_CMD_OK_GETID));
if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETLEDS, 0) != KBD_ACK)
kprintf("atkbd: setleds failed\n");
if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETREP, 255) != KBD_ACK)
kprintf("atkbd: setrep failed\n");
if (send_kbd_command(kbdc, ATKBD_CMD_RESEND) != KBD_ACK)
kprintf("atkbd: resend failed\n");
#endif
/*
* Some keyboards require a SETLEDS command to be sent after
* the reset command before they will send keystrokes to us
* (Acer C720).
*/
if (send_kbd_command_and_data(kbdc, ATKBD_CMD_SETLEDS, 0) != KBD_ACK)
kprintf("atkbd: setleds failed\n");
send_kbd_command(kbdc, ATKBD_CMD_ENABLE);
#if 0
/* DEBUGGING */
{
int retry;
int c;
kprintf("atkbd: waiting for keypress");
for (retry = 0; retry < 10; ++retry) {
c = read_kbd_data_no_wait(kbdc);
kprintf(" %d", c);
tsleep(&c, 0, "wait", hz);
}
kprintf("\n");
}
#endif
if (mux_version == -1) {
mux_mask = 0;
mux_val = 0;
} else {
mux_mask = KBD_AUX_CONTROL_BITS;
mux_val = 0;
kprintf("atkbd: setaux for multiplexer\n");
}
/* enable the keyboard port and intr. */
if (!set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS | KBD_TRANSLATION |
KBD_OVERRIDE_KBD_LOCK | mux_mask,
(c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
| KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT | mux_val)) {
/*
* CONTROLLER ERROR
* This is serious; we are left with the disabled
* keyboard intr.
*/
set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS | KBD_TRANSLATION |
KBD_OVERRIDE_KBD_LOCK | mux_mask,
c);
kbdc_lock(kbdc, FALSE);
kprintf("atkbd: unable to enable the keyboard port and intr.\n");
return EIO;
}
kbdc_lock(kbdc, FALSE);
return 0;
}
static int
probe_keyboard(KBDC kbdc, int flags)
{
/*
* Don't try to print anything in this function. The low-level
* console may not have been initialized yet...
*/
int err;
int c;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return ENXIO;
}
/*
* XXX block data transmission from the keyboard. This can cause
* the keyboard to stop sending keystrokes even when re-enabled
* under certain circumstances if not followed by a full reset.
*/
write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
/* flush any noise in the buffer */
empty_both_buffers(kbdc, 100);
/* save the current keyboard controller command byte */
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_lock(kbdc, FALSE);
return ENXIO;
}
/*
* The keyboard may have been screwed up by the boot block.
* We may just be able to recover from error by testing the controller
* and the keyboard port. The controller command byte needs to be
* saved before this recovery operation, as some controllers seem
* to set the command byte to particular values.
*/
test_controller(kbdc);
test_kbd_port(kbdc);
err = get_kbd_echo(kbdc);
/*
* Even if the keyboard doesn't seem to be present (err != 0),
* we shall enable the keyboard port and interrupt so that
* the driver will be operable when the keyboard is attached
* to the system later. It is NOT recommended to hot-plug
* the AT keyboard, but many people do so...
*/
setup_kbd_port(kbdc, TRUE, TRUE);
#if 0
if (err) {
/* try to restore the command byte as before */
set_controller_command_byte(kbdc, KBD_KBD_CONTROL_BITS, c);
}
#endif
kbdc_lock(kbdc, FALSE);
return err;
}
static int
init_keyboard(KBDC kbdc, int *type, int flags)
{
int codeset;
int id;
int c;
if (!kbdc_lock(kbdc, TRUE)) {
/* driver error? */
return EIO;
}
/* temporarily block data transmission from the keyboard */
write_controller_command(kbdc, KBDC_DISABLE_KBD_PORT);
/* save the current controller command byte */
empty_both_buffers(kbdc, 200);
c = get_controller_command_byte(kbdc);
if (c == -1) {
/* CONTROLLER ERROR */
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to get the current command byte value.\n");
return EIO;
}
if (bootverbose)
printf("atkbd: the current kbd controller command byte %04x\n",
c);
#if 0
/* override the keyboard lock switch */
c |= KBD_OVERRIDE_KBD_LOCK;
#endif
/* enable the keyboard port, but disable the keyboard intr. */
if (setup_kbd_port(kbdc, TRUE, FALSE)) {
/* CONTROLLER ERROR: there is very little we can do... */
printf("atkbd: unable to set the command byte.\n");
kbdc_lock(kbdc, FALSE);
return EIO;
}
if (HAS_QUIRK(kbdc, KBDC_QUIRK_RESET_AFTER_PROBE) &&
atkbd_reset(kbdc, flags, c)) {
kbdc_lock(kbdc, FALSE);
return EIO;
}
/*
* Check if we have an XT keyboard before we attempt to reset it.
* The procedure assumes that the keyboard and the controller have
* been set up properly by BIOS and have not been messed up
* during the boot process.
*/
codeset = -1;
if (flags & KB_CONF_ALT_SCANCODESET)
/* the user says there is a XT keyboard */
codeset = 1;
#ifdef KBD_DETECT_XT_KEYBOARD
else if ((c & KBD_TRANSLATION) == 0) {
/* SET_SCANCODE_SET is not always supported; ignore error */
if (send_kbd_command_and_data(kbdc, KBDC_SET_SCANCODE_SET, 0)
== KBD_ACK)
codeset = read_kbd_data(kbdc);
}
if (bootverbose)
printf("atkbd: scancode set %d\n", codeset);
#endif /* KBD_DETECT_XT_KEYBOARD */
*type = KB_OTHER;
id = get_kbd_id(kbdc);
switch(id) {
case 0x41ab: /* 101/102/... Enhanced */
case 0x83ab: /* ditto */
case 0x54ab: /* SpaceSaver */
case 0x84ab: /* ditto */
#if 0
case 0x90ab: /* 'G' */
case 0x91ab: /* 'P' */
case 0x92ab: /* 'A' */
#endif
*type = KB_101;
break;
case -1: /* AT 84 keyboard doesn't return ID */
*type = KB_84;
break;
default:
break;
}
if (bootverbose)
printf("atkbd: keyboard ID 0x%x (%d)\n", id, *type);
if (!HAS_QUIRK(kbdc, KBDC_QUIRK_RESET_AFTER_PROBE) &&
atkbd_reset(kbdc, flags, c)) {
kbdc_lock(kbdc, FALSE);
return EIO;
}
/*
* Allow us to set the XT_KEYBD flag so that keyboards
* such as those on the IBM ThinkPad laptop computers can be used
* with the standard console driver.
*/
if (codeset == 1) {
if (send_kbd_command_and_data(kbdc,
KBDC_SET_SCANCODE_SET, codeset) == KBD_ACK) {
/* XT kbd doesn't need scan code translation */
c &= ~KBD_TRANSLATION;
} else {
/*
* KEYBOARD ERROR
* The XT kbd isn't usable unless the proper scan
* code set is selected.
*/
set_controller_command_byte(kbdc, ALLOW_DISABLE_KBD(kbdc)
? 0xff : KBD_KBD_CONTROL_BITS, c);
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to set the XT keyboard mode.\n");
return EIO;
}
}
#if defined(__sparc64__)
if (send_kbd_command_and_data(
kbdc, KBDC_SET_SCANCODE_SET, 2) != KBD_ACK) {
printf("atkbd: can't set translation.\n");
}
c |= KBD_TRANSLATION;
#endif
/*
* Some keyboards require a SETLEDS command to be sent after
* the reset command before they will send keystrokes to us
*/
if (HAS_QUIRK(kbdc, KBDC_QUIRK_SETLEDS_ON_INIT) &&
send_kbd_command_and_data(kbdc, KBDC_SET_LEDS, 0) != KBD_ACK) {
printf("atkbd: setleds failed\n");
}
if (!ALLOW_DISABLE_KBD(kbdc))
send_kbd_command(kbdc, KBDC_ENABLE_KBD);
/* enable the keyboard port and intr. */
if (!set_controller_command_byte(kbdc,
KBD_KBD_CONTROL_BITS | KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK,
(c & (KBD_TRANSLATION | KBD_OVERRIDE_KBD_LOCK))
| KBD_ENABLE_KBD_PORT | KBD_ENABLE_KBD_INT)) {
/*
* CONTROLLER ERROR
* This is serious; we are left with the disabled
* keyboard intr.
*/
set_controller_command_byte(kbdc, ALLOW_DISABLE_KBD(kbdc)
? 0xff : (KBD_KBD_CONTROL_BITS | KBD_TRANSLATION |
KBD_OVERRIDE_KBD_LOCK), c);
kbdc_lock(kbdc, FALSE);
printf("atkbd: unable to enable the keyboard port and intr.\n");
return EIO;
}
kbdc_lock(kbdc, FALSE);
return 0;
}
