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- /*
- * simulated keyboard input for systems with none (except via uart or usb)
- *
- * gutted version of ps2 version from ../pc
- */
- #include "u.h"
- #include "../port/lib.h"
- #include "mem.h"
- #include "dat.h"
- #include "fns.h"
- #include "io.h"
- #include "../port/error.h"
- enum {
- Spec= 0xF800, /* Unicode private space */
- PF= Spec|0x20, /* num pad function key */
- View= Spec|0x00, /* view (shift window up) */
- KF= 0xF000, /* function key (begin Unicode private space) */
- Shift= Spec|0x60,
- Break= Spec|0x61,
- Ctrl= Spec|0x62,
- Latin= Spec|0x63,
- Caps= Spec|0x64,
- Num= Spec|0x65,
- Middle= Spec|0x66,
- Altgr= Spec|0x67,
- Kmouse= Spec|0x100,
- No= 0x00, /* peter */
- Home= KF|13,
- Up= KF|14,
- Pgup= KF|15,
- Print= KF|16,
- Left= KF|17,
- Right= KF|18,
- End= KF|24,
- Down= View,
- Pgdown= KF|19,
- Ins= KF|20,
- Del= 0x7F,
- Scroll= KF|21,
- Nscan= 128,
- Int= 0, /* kbscans indices */
- Ext,
- Nscans,
- };
- /*
- * The codes at 0x79 and 0x7b are produced by the PFU Happy Hacking keyboard.
- * A 'standard' keyboard doesn't produce anything above 0x58.
- */
- Rune kbtab[Nscan] =
- {
- [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, '*',
- [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, Scroll, '7',
- [0x48] '8', '9', '-', '4', '5', '6', '+', '1',
- [0x50] '2', '3', '0', '.', No, No, No, KF|11,
- [0x58] KF|12, No, No, No, No, No, No, No,
- [0x60] No, No, No, No, No, No, No, No,
- [0x68] No, No, No, No, No, No, No, No,
- [0x70] No, No, No, No, No, No, No, No,
- [0x78] No, View, No, Up, No, No, No, No,
- };
- Rune kbtabshift[Nscan] =
- {
- [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, '*',
- [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, Scroll, '7',
- [0x48] '8', '9', '-', '4', '5', '6', '+', '1',
- [0x50] '2', '3', '0', '.', No, No, No, KF|11,
- [0x58] KF|12, No, No, No, No, No, No, No,
- [0x60] No, No, No, No, No, No, No, No,
- [0x68] No, No, No, No, No, No, No, No,
- [0x70] No, No, No, No, No, No, No, No,
- [0x78] No, Up, No, Up, No, No, No, No,
- };
- Rune kbtabesc1[Nscan] =
- {
- [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, '\n', Ctrl, No, No,
- [0x20] No, No, No, No, No, No, No, No,
- [0x28] No, No, Shift, No, No, No, No, No,
- [0x30] No, No, No, No, No, '/', No, Print,
- [0x38] Altgr, No, No, No, No, No, No, No,
- [0x40] No, No, No, No, No, No, Break, Home,
- [0x48] Up, Pgup, No, Left, No, Right, No, End,
- [0x50] Down, Pgdown, Ins, Del, No, No, No, No,
- [0x58] No, No, No, No, No, No, No, No,
- [0x60] No, No, No, No, No, No, No, No,
- [0x68] No, No, No, No, No, No, No, No,
- [0x70] No, No, No, No, No, No, No, No,
- [0x78] No, Up, No, No, No, No, No, No,
- };
- Rune kbtabaltgr[Nscan] =
- {
- [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, '\n', Ctrl, No, No,
- [0x20] No, No, No, No, No, No, No, No,
- [0x28] No, No, Shift, No, No, No, No, No,
- [0x30] No, No, No, No, No, '/', No, Print,
- [0x38] Altgr, No, No, No, No, No, No, No,
- [0x40] No, No, No, No, No, No, Break, Home,
- [0x48] Up, Pgup, No, Left, No, Right, No, End,
- [0x50] Down, Pgdown, Ins, Del, No, No, No, No,
- [0x58] No, No, No, No, No, No, No, No,
- [0x60] No, No, No, No, No, No, No, No,
- [0x68] No, No, No, No, No, No, No, No,
- [0x70] No, No, No, No, No, No, No, No,
- [0x78] No, Up, No, No, No, No, No, No,
- };
- Rune kbtabctrl[Nscan] =
- {
- [0x00] No, '', '', '', '', '', '', '',
- [0x08] '', '', '', '', '
', '', '\b', '\t',
- [0x10] '', '', '', '', '', '', '', '\t',
- [0x18] '', '', '', '', '\n', Ctrl, '', '',
- [0x20] '', '', '', '\b', '\n', '', '', '',
- [0x28] '', No, Shift, '', '', '', '', '',
- [0x30] '', '', '
', '', '', '', Shift, '\n',
- [0x38] Latin, No, Ctrl, '', '', '', '', '',
- [0x40] '', '', '', '
', '', '', '', '',
- [0x48] '', '', '
', '', '', '', '', '',
- [0x50] '', '', '', '', No, No, No, '',
- [0x58] '', No, No, No, No, No, No, No,
- [0x60] No, No, No, No, No, No, No, No,
- [0x68] No, No, No, No, No, No, No, No,
- [0x70] No, No, No, No, No, No, No, No,
- [0x78] No, '', No, '\b', No, No, No, No,
- };
- int mouseshifted;
- void (*kbdmouse)(int);
- static int kdebug;
- typedef struct Kbscan Kbscan;
- struct Kbscan {
- int esc1;
- int esc2;
- int alt;
- int altgr;
- int caps;
- int ctl;
- int num;
- int shift;
- int collecting;
- int nk;
- Rune kc[5];
- int buttons;
- };
- Kbscan kbscans[Nscans]; /* kernel and external scan code state */
- /*
- * Scan code processing
- */
- void
- kbdputsc(int c, int external)
- {
- int i, keyup;
- Kbscan *kbscan;
- if(external)
- kbscan = &kbscans[Ext];
- else
- kbscan = &kbscans[Int];
- if(kdebug)
- print("sc %x ms %d\n", c, mouseshifted);
- /*
- * e0's is the first of a 2 character sequence, e1 the first
- * of a 3 character sequence (on the safari)
- */
- if(c == 0xe0){
- kbscan->esc1 = 1;
- return;
- } else if(c == 0xe1){
- kbscan->esc2 = 2;
- return;
- }
- keyup = c & 0x80;
- c &= 0x7f;
- if(c > sizeof kbtab){
- c |= keyup;
- if(c != 0xFF) /* these come fairly often: CAPSLOCK U Y */
- print("unknown key %ux\n", c);
- return;
- }
- if(kbscan->esc1){
- c = kbtabesc1[c];
- kbscan->esc1 = 0;
- } else if(kbscan->esc2){
- kbscan->esc2--;
- return;
- } else if(kbscan->shift)
- c = kbtabshift[c];
- else if(kbscan->altgr)
- c = kbtabaltgr[c];
- else if(kbscan->ctl)
- c = kbtabctrl[c];
- else
- c = kbtab[c];
- if(kbscan->caps && c<='z' && c>='a')
- c += 'A' - 'a';
- /*
- * keyup only important for shifts
- */
- if(keyup){
- switch(c){
- case Latin:
- kbscan->alt = 0;
- break;
- case Shift:
- kbscan->shift = 0;
- mouseshifted = 0;
- if(kdebug)
- print("shiftclr\n");
- break;
- case Ctrl:
- kbscan->ctl = 0;
- break;
- case Altgr:
- kbscan->altgr = 0;
- break;
- case Kmouse|1:
- case Kmouse|2:
- case Kmouse|3:
- case Kmouse|4:
- case Kmouse|5:
- kbscan->buttons &= ~(1<<(c-Kmouse-1));
- if(kbdmouse)
- kbdmouse(kbscan->buttons);
- break;
- }
- return;
- }
- /*
- * normal character
- */
- if(!(c & (Spec|KF))){
- if(kbscan->ctl)
- if(kbscan->alt && c == Del)
- exit(0);
- if(!kbscan->collecting){
- kbdputc(kbdq, c);
- return;
- }
- kbscan->kc[kbscan->nk++] = c;
- c = latin1(kbscan->kc, kbscan->nk);
- if(c < -1) /* need more keystrokes */
- return;
- if(c != -1) /* valid sequence */
- kbdputc(kbdq, c);
- else /* dump characters */
- for(i=0; i<kbscan->nk; i++)
- kbdputc(kbdq, kbscan->kc[i]);
- kbscan->nk = 0;
- kbscan->collecting = 0;
- return;
- } else {
- switch(c){
- case Caps:
- kbscan->caps ^= 1;
- return;
- case Num:
- kbscan->num ^= 1;
- return;
- case Shift:
- kbscan->shift = 1;
- if(kdebug)
- print("shift\n");
- mouseshifted = 1;
- return;
- case Latin:
- kbscan->alt = 1;
- /*
- * VMware and Qemu use Ctl-Alt as the key combination
- * to make the VM give up keyboard and mouse focus.
- * This has the unfortunate side effect that when you
- * come back into focus, Plan 9 thinks you want to type
- * a compose sequence (you just typed alt).
- *
- * As a clumsy hack around this, we look for ctl-alt
- * and don't treat it as the start of a compose sequence.
- */
- if(!kbscan->ctl){
- kbscan->collecting = 1;
- kbscan->nk = 0;
- }
- return;
- case Ctrl:
- kbscan->ctl = 1;
- return;
- case Altgr:
- kbscan->altgr = 1;
- return;
- case Kmouse|1:
- case Kmouse|2:
- case Kmouse|3:
- case Kmouse|4:
- case Kmouse|5:
- kbscan->buttons |= 1<<(c-Kmouse-1);
- if(kbdmouse)
- kbdmouse(kbscan->buttons);
- return;
- case KF|11:
- print("kbd debug on, F12 turns it off\n");
- kdebug = 1;
- break;
- case KF|12:
- kdebug = 0;
- break;
- }
- }
- kbdputc(kbdq, c);
- }
- void
- kbdenable(void)
- {
- #ifdef notdef
- kbdq = qopen(4*1024, 0, 0, 0);
- if(kbdq == nil)
- panic("kbdinit");
- qnoblock(kbdq, 1);
- #endif
- kbscans[Int].num = 0;
- }
- void
- kbdputmap(ushort m, ushort scanc, Rune r)
- {
- if(scanc >= Nscan)
- error(Ebadarg);
- switch(m) {
- default:
- error(Ebadarg);
- case 0:
- kbtab[scanc] = r;
- break;
- case 1:
- kbtabshift[scanc] = r;
- break;
- case 2:
- kbtabesc1[scanc] = r;
- break;
- case 3:
- kbtabaltgr[scanc] = r;
- break;
- case 4:
- kbtabctrl[scanc] = r;
- break;
- }
- }
- int
- kbdgetmap(uint offset, int *t, int *sc, Rune *r)
- {
- if ((int)offset < 0)
- error(Ebadarg);
- *t = offset/Nscan;
- *sc = offset%Nscan;
- switch(*t) {
- default:
- return 0;
- case 0:
- *r = kbtab[*sc];
- return 1;
- case 1:
- *r = kbtabshift[*sc];
- return 1;
- case 2:
- *r = kbtabesc1[*sc];
- return 1;
- case 3:
- *r = kbtabaltgr[*sc];
- return 1;
- case 4:
- *r = kbtabctrl[*sc];
- return 1;
- }
- }
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