#include "u.h"
#include "lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include <libg.h>
#include <gnot.h>
#include "screen.h"
enum {
Data= 0x60, /* data port */
Status= 0x64, /* status port */
Inready= 0x01, /* input character ready */
Outbusy= 0x02, /* output busy */
Sysflag= 0x04, /* system flag */
Cmddata= 0x08, /* cmd==0, data==1 */
Inhibit= 0x10, /* keyboard/mouse inhibited */
Minready= 0x20, /* mouse character ready */
Rtimeout= 0x40, /* general timeout */
Parity= 0x80,
Cmd= 0x64, /* command port (write only) */
Spec= 0x80,
PF= Spec|0x20, /* num pad function key */
View= Spec|0x00, /* view (shift window up) */
KF= Spec|0x40, /* function key */
Shift= Spec|0x60,
Break= Spec|0x61,
Ctrl= Spec|0x62,
Latin= Spec|0x63,
Caps= Spec|0x64,
Num= Spec|0x65,
Middle= Spec|0x66,
No= Spec|0x7F, /* no mapping */
Home= KF|13,
Up= KF|14,
Pgup= KF|15,
Print= KF|16,
Left= View,
Right= View,
End= '\r',
Down= View,
Pgdown= View,
Ins= KF|20,
Del= 0x7F,
};
uchar kbtab[] =
{
[0x00] No, 0x1b, '1', '2', '3', '4', '5', '6',
[0x08] '7', '8', '9', '0', '-', '=', '\b', '\t',
[0x10] 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i',
[0x18] 'o', 'p', '[', ']', '\n', Ctrl, 'a', 's',
[0x20] 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',
[0x28] '\'', '`', Shift, '\\', 'z', 'x', 'c', 'v',
[0x30] 'b', 'n', 'm', ',', '.', '/', Shift, No,
[0x38] Latin, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, KF|12, Home,
[0x48] No, No, No, No, No, No, No, No,
[0x50] No, No, No, No, No, No, No, KF|11,
[0x58] KF|12, No, No, No, No, No, No, No,
};
uchar kbtabshift[] =
{
[0x00] No, 0x1b, '!', '@', '#', '$', '%', '^',
[0x08] '&', '*', '(', ')', '_', '+', '\b', '\t',
[0x10] 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I',
[0x18] 'O', 'P', '{', '}', '\n', Ctrl, 'A', 'S',
[0x20] 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':',
[0x28] '"', '~', Shift, '|', 'Z', 'X', 'C', 'V',
[0x30] 'B', 'N', 'M', '<', '>', '?', Shift, No,
[0x38] Latin, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, KF|12, Home,
[0x48] No, No, No, No, No, No, No, No,
[0x50] No, No, No, No, No, No, No, KF|11,
[0x58] KF|12, No, No, No, No, No, No, No,
};
uchar kbtabesc1[] =
{
[0x00] No, No, No, No, No, No, No, No,
[0x08] No, No, No, No, No, No, No, No,
[0x10] No, No, No, No, No, No, No, No,
[0x18] No, No, No, No, No, Ctrl, No, No,
[0x20] No, No, No, No, No, No, No, No,
[0x28] No, No, No, No, No, No, No, No,
[0x30] No, No, No, No, No, No, No, Print,
[0x38] Latin, No, No, No, No, No, No, No,
[0x40] No, No, No, No, No, No, Break, Home,
[0x48] Up, Pgup, No, Down, No, Right, No, End,
[0x50] Left, Pgdown, Ins, Del, No, No, No, No,
[0x58] No, No, No, No, No, No, No, No,
};
struct latin
{
uchar l;
char c[2];
}latintab[] = {
'', "!!", /* spanish initial ! */
'', "c|", /* cent */
'', "c$", /* cent */
'', "l$", /* pound sterling */
'', "g$", /* general currency */
'', "y$", /* yen */
'', "j$", /* yen */
'', "||", /* broken vertical bar */
'', "SS", /* section symbol */
'', "\"\"", /* dieresis */
'', "cr", /* copyright */
'', "cO", /* copyright */
'', "sa", /* super a, feminine ordinal */
'', "<<", /* left angle quotation */
'', "no", /* not sign, hooked overbar */
'', "--", /* soft hyphen */
'', "rg", /* registered trademark */
'', "__", /* macron */
'', "s0", /* degree (sup o) */
'', "+-", /* plus-minus */
'', "s2", /* sup 2 */
'', "s3", /* sup 3 */
'', "''", /* grave accent */
'', "mu", /* mu */
'', "pg", /* paragraph (pilcrow) */
'', "..", /* centered . */
'', ",,", /* cedilla */
'', "s1", /* sup 1 */
'', "so", /* sup o */
'', ">>", /* right angle quotation */
'', "14", /* 1/4 */
'', "12", /* 1/2 */
'', "34", /* 3/4 */
'', "??", /* spanish initial ? */
'', "A`", /* A grave */
'', "A'", /* A acute */
'', "A^", /* A circumflex */
'', "A~", /* A tilde */
'', "A\"", /* A dieresis */
'', "A:", /* A dieresis */
'', "Ao", /* A circle */
'', "AO", /* A circle */
'', "Ae", /* AE ligature */
'', "AE", /* AE ligature */
'', "C,", /* C cedilla */
'', "E`", /* E grave */
'', "E'", /* E acute */
'', "E^", /* E circumflex */
'', "E\"", /* E dieresis */
'', "E:", /* E dieresis */
'', "I`", /* I grave */
'', "I'", /* I acute */
'', "I^", /* I circumflex */
'', "I\"", /* I dieresis */
'', "I:", /* I dieresis */
'', "D-", /* Eth */
'', "N~", /* N tilde */
'', "O`", /* O grave */
'', "O'", /* O acute */
'', "O^", /* O circumflex */
'', "O~", /* O tilde */
'', "O\"", /* O dieresis */
'', "O:", /* O dieresis */
'', "OE", /* O dieresis */
'', "Oe", /* O dieresis */
'', "xx", /* times sign */
'', "O/", /* O slash */
'', "U`", /* U grave */
'', "U'", /* U acute */
'', "U^", /* U circumflex */
'', "U\"", /* U dieresis */
'', "U:", /* U dieresis */
'', "UE", /* U dieresis */
'', "Ue", /* U dieresis */
'', "Y'", /* Y acute */
'', "P|", /* Thorn */
'', "Th", /* Thorn */
'', "TH", /* Thorn */
'', "ss", /* sharp s */
'', "a`", /* a grave */
'', "a'", /* a acute */
'', "a^", /* a circumflex */
'', "a~", /* a tilde */
'', "a\"", /* a dieresis */
'', "a:", /* a dieresis */
'', "ao", /* a circle */
'', "ae", /* ae ligature */
'', "c,", /* c cedilla */
'', "e`", /* e grave */
'', "e'", /* e acute */
'', "e^", /* e circumflex */
'', "e\"", /* e dieresis */
'', "e:", /* e dieresis */
'', "i`", /* i grave */
'', "i'", /* i acute */
'', "i^", /* i circumflex */
'', "i\"", /* i dieresis */
'', "i:", /* i dieresis */
'', "d-", /* eth */
'', "n~", /* n tilde */
'', "o`", /* o grave */
'', "o'", /* o acute */
'', "o^", /* o circumflex */
'', "o~", /* o tilde */
'', "o\"", /* o dieresis */
'', "o:", /* o dieresis */
'', "oe", /* o dieresis */
'', "-:", /* divide sign */
'', "o/", /* o slash */
'', "u`", /* u grave */
'', "u'", /* u acute */
'', "u^", /* u circumflex */
'', "u\"", /* u dieresis */
'', "u:", /* u dieresis */
'', "ue", /* u dieresis */
'', "y'", /* y acute */
'', "th", /* thorn */
'', "p|", /* thorn */
'', "y\"", /* y dieresis */
'', "y:", /* y dieresis */
0, 0,
};
/*
* keyboard input q
*/
KIOQ kbdq;
static int mousebuttons;
static int middlebutton;
/*
* predeclared
*/
static void kbdintr(Ureg*);
int
latin1(int k1, int k2)
{
int i;
struct latin *l;
for(l=latintab; l->l; l++)
if(k1==l->c[0] && k2==l->c[1])
return l->l;
return 0;
}
/*
* wait for output no longer busy
*/
static int
outready(void)
{
int tries;
for(tries = 0; (inb(Status) & Outbusy); tries++)
if(tries > 1000)
return -1;
return 0;
}
/*
* wait for input
*/
static int
inready(void)
{
int tries;
for(tries = 0; !(inb(Status) & Inready); tries++)
if(tries > 1000)
return -1;
return 0;
}
/*
* send a command to the mouse
*/
static int
mousecmd(int cmd)
{
unsigned int c;
int tries;
c = 0;
do{
for(tries=0; tries < 10; tries++){
if(outready() < 0)
return -1;
outb(Cmd, 0xD4);
if(outready() < 0)
return -1;
outb(Data, cmd);
if(inready() < 0)
return -1;
c = inb(Data);
}
} while(c == 0xFE);
if(c != 0xFA)
return -1;
return 0;
}
void
kbdinit(void)
{
int c, s;
int tries;
initq(&kbdq);
setvec(Kbdvec, kbdintr);
initq(&mouseq);
setvec(Mousevec, kbdintr);
/* wait for a quiescent controller */
while((c = inb(Status)) & (Outbusy | Inready))
if(c & Inready)
inb(Data);
/* enable kbd/mouse xfers and interrupts */
outb(Cmd, 0x60);
if(outready() < 0)
print("kbd init failed\n");
outb(Data, 0x47);
if(outready() < 0)
print("kbd init failed\n");
outb(Cmd, 0xA8);
/* make mouse streaming, enabled */
if(mousecmd(0xEA) < 0
|| mousecmd(0xF4) < 0)
print("can't initialize mouse\n");
}
/*
* mouse message is three bytes
*
* byte 0 - 0 0 SDY SDX 1 M R L
* byte 1 - DX
* byte 2 - DY
*/
static void
mymouseputc(int c)
{
static short msg[3];
static int nb;
static uchar b[] = {0, 1, 4, 5, 2, 3, 6, 7};
static lastdx, lastdy;
int diff;
extern Mouseinfo mouse;
/*
* check byte 0 for consistency
*/
if(nb==0 && (c&0xc8)!=0x08)
return;
msg[nb] = c;
if(++nb == 3){
nb = 0;
if(msg[0] & 0x10)
msg[1] |= 0xFF00;
if(msg[0] & 0x20)
msg[2] |= 0xFF00;
mousebuttons = b[msg[0]&7];
mouse.newbuttons = mousebuttons | middlebutton;
mouse.dx = msg[1];
mouse.dy = -msg[2];
mouse.track = 1;
spllo(); /* mouse tracking kills uart0 */
mouseclock();
}
}
/*
* Ctrl key used as middle button pressed
*/
static void
middle(int newval)
{
middlebutton = newval;
mouse.newbuttons = mousebuttons | middlebutton;
mouse.dx = 0;
mouse.dy = 0;
mouse.track = 1;
spllo(); /* mouse tracking kills uart0 */
mouseclock();
}
/*
* keyboard interrupt
*/
int
kbdintr0(void)
{
int s, c, nc;
static int esc1, esc2;
static int shift;
static int caps;
static int ctl;
static int num;
static int lstate, k1, k2;
int keyup;
/*
* get status
*/
s = inb(Status);
if(!(s&Inready))
return -1;
/*
* get the character
*/
c = inb(Data);
/*
* if it's the mouse...
*/
if(s & Minready){
mymouseputc(c);
return 0;
}
/*
* e0's is the first of a 2 character sequence
*/
if(c == 0xe0){
esc1 = 1;
return 0;
} else if(c == 0xe1){
esc2 = 2;
return 0;
}
keyup = c&0x80;
c &= 0x7f;
if(c > sizeof kbtab){
print("unknown key %ux\n", c|keyup);
kbdputc(&kbdq, k1);
return 0;
}
if(esc1){
c = kbtabesc1[c];
esc1 = 0;
if(!keyup)
kbdputc(&kbdq, c);
return 0;
} else if(esc2){
esc2--;
return 0;
} else if(shift)
c = kbtabshift[c];
else
c = kbtab[c];
if(caps && c<='z' && c>='a')
c += 'A' - 'a';
/*
* keyup only important for shifts
*/
if(keyup){
switch(c){
case Shift:
shift = 0;
break;
case Ctrl:
ctl = 0;
break;
case Middle:
middle(0);
break;
}
return 0;
}
/*
* normal character
*/
if(!(c & Spec)){
if(ctl)
c &= 0x1f;
switch(lstate){
case 1:
k1 = c;
lstate = 2;
return 0;
case 2:
k2 = c;
lstate = 0;
c = latin1(k1, k2);
if(c == 0){
kbdputc(&kbdq, k1);
c = k2;
}
/* fall through */
default:
break;
}
} else {
switch(c){
case Caps:
caps ^= 1;
return 0;
case Num:
num ^= 1;
return 0;
case Shift:
shift = 1;
return 0;
case Latin:
lstate = 1;
return 0;
case Ctrl:
ctl = 1;
return 0;
case Middle:
middle(2);
return 0;
}
}
kbdputc(&kbdq, c);
return 0;
}
void
kbdintr(Ureg *ur)
{
while(kbdintr0() == 0)
;
}