int
pckbd_set_xtscancode(pckbport_tag_t kbctag, pckbport_slot_t kbcslot,
struct pckbd_internal *id)
{
int xt, res = 0;
u_char cmd[2];
/*
* Some keyboard/8042 combinations do not seem to work if the keyboard
* is set to table 1; in fact, it would appear that some keyboards just
* ignore the command altogether. So by default, we use the AT scan
* codes and have the 8042 translate them. Unfortunately, this is
* known to not work on some PS/2 machines. We try desperately to deal
* with this by checking the (lack of a) translate bit in the 8042 and
* attempting to set the keyboard to XT mode. If this all fails, well,
* tough luck. If the PCKBC_CANT_TRANSLATE pckbc flag was set, we
* enable software translation.
*
* XXX It would perhaps be a better choice to just use AT scan codes
* and not bother with this.
*/
xt = pckbport_xt_translation(kbctag, kbcslot, 1);
if (xt == 1) {
/* The 8042 is translating for us; use AT codes. */
cmd[0] = KBC_SETTABLE;
cmd[1] = 2;
res = pckbport_poll_cmd(kbctag, kbcslot, cmd, 2, 0, 0, 0);
if (res) {
u_char cmdb[1];
aprint_debug("pckbd: error setting scanset 2\n");
/*
* XXX at least one keyboard is reported to lock up
* if a "set table" is attempted, thus the "reset".
* XXX ignore errors, scanset 2 should be
* default anyway.
*/
cmdb[0] = KBC_RESET;
(void)pckbport_poll_cmd(kbctag, kbcslot, cmdb, 1, 1, 0, 1);
pckbport_flush(kbctag, kbcslot);
res = 0;
}
if (id != NULL)
id->t_translating = 1;
} else if (xt == -1) {
/* Software translation required */
if (id != NULL)
id->t_translating = 0;
} else {
/* Stupid 8042; set keyboard to XT codes. */
cmd[0] = KBC_SETTABLE;
cmd[1] = 1;
res = pckbport_poll_cmd(kbctag, kbcslot, cmd, 2, 0, 0, 0);
if (res)
aprint_debug("pckbd: error setting scanset 1\n");
if (id != NULL)
id->t_translating = 1;
}
return res;
}
int
pckbd_set_xtscancode(pckbport_tag_t kbctag, pckbport_slot_t kbcslot)
{
int res;
u_char cmd[2];
/*
* Some keyboard/8042 combinations do not seem to work if the keyboard
* is set to table 1; in fact, it would appear that some keyboards just
* ignore the command altogether. So by default, we use the AT scan
* codes and have the 8042 translate them. Unfortunately, this is
* known to not work on some PS/2 machines. We try desperately to deal
* with this by checking the (lack of a) translate bit in the 8042 and
* attempting to set the keyboard to XT mode. If this all fails, well,
* tough luck.
*
* XXX It would perhaps be a better choice to just use AT scan codes
* and not bother with this.
*/
if (pckbport_xt_translation(kbctag, kbcslot, 1)) {
/* The 8042 is translating for us; use AT codes. */
cmd[0] = KBC_SETTABLE;
cmd[1] = 2;
res = pckbport_poll_cmd(kbctag, kbcslot, cmd, 2, 0, 0, 0);
if (res) {
u_char cmd[1];
#ifdef DEBUG
printf("pckbd: error setting scanset 2\n");
#endif
/*
* XXX at least one keyboard is reported to lock up
* if a "set table" is attempted, thus the "reset".
* XXX ignore errors, scanset 2 should be
* default anyway.
*/
cmd[0] = KBC_RESET;
(void)pckbport_poll_cmd(kbctag, kbcslot, cmd, 1, 1, 0, 1);
pckbport_flush(kbctag, kbcslot);
res = 0;
}
} else {
/* Stupid 8042; set keyboard to XT codes. */
cmd[0] = KBC_SETTABLE;
cmd[1] = 1;
res = pckbport_poll_cmd(kbctag, kbcslot, cmd, 2, 0, 0, 0);
#ifdef DEBUG
if (res)
printf("pckbd: error setting scanset 1\n");
#endif
}
return res;
}
