/* $NetBSD: pckbd.c,v 1.1 1995/08/03 00:48:25 cgd Exp $ */ /*- * Copyright (c) 1993, 1994, 1995 Charles Hannum. All rights reserved. * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz and Don Ahn. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)pccons.c 5.11 (Berkeley) 5/21/91 */ /* * code to work keyboard & display for PC-style console */ #include #include #include #include #include #include #include #include #include #include #include #include #include static volatile u_char ack, nak; /* Don't ask. */ static u_char async, kernel, polling; /* Really, you don't want to know. */ static u_char lock_state = 0x00, /* all off */ old_lock_state = 0xff, typematic_rate = 0xff, /* don't update until set by user */ old_typematic_rate = 0xff; struct pckbd_softc { struct device sc_dev; void *sc_ih; }; int pckbdprobe __P((struct device *, void *, void *)); void pckbdattach __P((struct device *, struct device *, void *)); int pckbdintr __P((void *)); struct cfdriver pckbdcd = { NULL, "pckbd", pckbdprobe, pckbdattach, DV_DULL, sizeof(struct pckbd_softc) }; char *sget __P((void)); int pccngetc __P((void *)); void pccnpollc __P((void *, int)); /* * DANGER WIL ROBINSON -- the values of SCROLL, NUM, CAPS, and ALT are * important. */ #define SCROLL 0x0001 /* stop output */ #define NUM 0x0002 /* numeric shift cursors vs. numeric */ #define CAPS 0x0004 /* caps shift -- swaps case of letter */ #define SHIFT 0x0008 /* keyboard shift */ #define CTL 0x0010 /* control shift -- allows ctl function */ #define ASCII 0x0020 /* ascii code for this key */ #define ALT 0x0080 /* alternate shift -- alternate chars */ #define FUNC 0x0100 /* function key */ #define KP 0x0200 /* Keypad keys */ #define NONE 0x0400 /* no function */ #define KBD_DELAY \ { u_char x = inb(0x84); } \ { u_char x = inb(0x84); } \ { u_char x = inb(0x84); } \ { u_char x = inb(0x84); } static inline int kbd_wait_output() { u_int i; for (i = 100000; i; i--) if ((inb(KBSTATP) & KBS_IBF) == 0) { KBD_DELAY; return 1; } return 0; } static inline int kbd_wait_input() { u_int i; for (i = 100000; i; i--) if ((inb(KBSTATP) & KBS_DIB) != 0) { KBD_DELAY; return 1; } return 0; } static inline void kbd_flush_input() { u_int i; for (i = 10; i; i--) { if ((inb(KBSTATP) & KBS_DIB) == 0) return; KBD_DELAY; (void) inb(KBDATAP); } } #if 1 /* * Get the current command byte. */ static u_char kbc_get8042cmd() { if (!kbd_wait_output()) return -1; outb(KBCMDP, K_RDCMDBYTE); if (!kbd_wait_input()) return -1; return inb(KBDATAP); } #endif /* * Pass command byte to keyboard controller (8042). */ static int kbc_put8042cmd(val) u_char val; { if (!kbd_wait_output()) return 0; outb(KBCMDP, K_LDCMDBYTE); if (!kbd_wait_output()) return 0; outb(KBOUTP, val); return 1; } /* * Pass command to keyboard itself */ int kbd_cmd(val, polling) u_char val; u_char polling; { u_int retries = 3; register u_int i; do { if (!kbd_wait_output()) return 0; ack = nak = 0; outb(KBOUTP, val); if (polling) for (i = 100000; i; i--) { if (inb(KBSTATP) & KBS_DIB) { register u_char c; KBD_DELAY; c = inb(KBDATAP); if (c == KBR_ACK || c == KBR_ECHO) { ack = 1; return 1; } if (c == KBR_RESEND) { nak = 1; break; } #ifdef DIAGNOSTIC printf("kbd_cmd: input char %x lost\n", c); #endif } } else for (i = 100000; i; i--) { (void) inb(KBSTATP); if (ack) return 1; if (nak) break; } if (!nak) return 0; } while (--retries); return 0; } /* * these are both bad jokes */ int pckbdprobe(parent, match, aux) struct device *parent; void *match, *aux; { struct isa_attach_args *ia = aux; u_int i; /* Enable interrupts and keyboard, etc. */ if (!kbc_put8042cmd(CMDBYTE)) { printf("pcprobe: command error\n"); return 0; } #if 1 /* Flush any garbage. */ kbd_flush_input(); /* Reset the keyboard. */ if (!kbd_cmd(KBC_RESET, 1)) { printf("pcprobe: reset error %d\n", 1); goto lose; } for (i = 600000; i; i--) if ((inb(KBSTATP) & KBS_DIB) != 0) { KBD_DELAY; break; } if (i == 0 || inb(KBDATAP) != KBR_RSTDONE) { printf("pcprobe: reset error %d\n", 2); goto lose; } /* * Some keyboards seem to leave a second ack byte after the reset. * This is kind of stupid, but we account for them anyway by just * flushing the buffer. */ kbd_flush_input(); /* Just to be sure. */ if (!kbd_cmd(KBC_ENABLE, 1)) { printf("pcprobe: reset error %d\n", 3); goto lose; } /* * 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 desparately 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 (kbc_get8042cmd() & KC8_TRANS) { /* The 8042 is translating for us; use AT codes. */ if (!kbd_cmd(KBC_SETTABLE, 1) || !kbd_cmd(2, 1)) { printf("pcprobe: reset error %d\n", 4); goto lose; } } else { /* Stupid 8042; set keyboard to XT codes. */ if (!kbd_cmd(KBC_SETTABLE, 1) || !kbd_cmd(1, 1)) { printf("pcprobe: reset error %d\n", 5); goto lose; } } lose: /* * Technically, we should probably fail the probe. But we'll be nice * and allow keyboard-less machines to boot with the console. */ #endif ia->ia_iosize = 16; ia->ia_msize = 0; return 1; } void pckbdattach(parent, self, aux) struct device *parent, *self; void *aux; { struct pckbd_softc *sc = (void *)self; struct isa_attach_args *ia = aux; printf("\n"); sc->sc_ih = isa_intr_establish(ia->ia_irq, ISA_IST_EDGE, ISA_IPL_TTY, pckbdintr, sc); wscattach_input(self, self, pccngetc, pccnpollc); } /* * Got a console receive interrupt - * the console processor wants to give us a character. * Catch the character, and see who it goes to. */ int pckbdintr(arg) void *arg; { struct pckbd_softc *sc = arg; u_char *cp; if ((inb(KBSTATP) & KBS_DIB) == 0) return 0; if (polling) return 1; do { cp = sget(); if (cp) wscons_kbdinput(cp); } while (inb(KBSTATP) & KBS_DIB); return 1; } void do_async_update(poll) u_char poll; { int pos; static int old_pos = -1; async = 0; if (lock_state != old_lock_state) { old_lock_state = lock_state; if (!kbd_cmd(KBC_MODEIND, poll) || !kbd_cmd(lock_state, poll)) { printf("pc: timeout updating leds\n"); (void) kbd_cmd(KBC_ENABLE, poll); } } if (typematic_rate != old_typematic_rate) { old_typematic_rate = typematic_rate; if (!kbd_cmd(KBC_TYPEMATIC, poll) || !kbd_cmd(typematic_rate, poll)) { printf("pc: timeout updating typematic rate\n"); (void) kbd_cmd(KBC_ENABLE, poll); } } } void async_update() { if (kernel || polling) { if (async) untimeout(do_async_update, NULL); do_async_update(1); } else { if (async) return; async = 1; timeout(do_async_update, NULL, 1); } } #if 0 int pcioctl(dev, cmd, data, flag, p) dev_t dev; u_long cmd; caddr_t data; int flag; struct proc *p; { struct pc_softc *sc = pccd.cd_devs[PCUNIT(dev)]; int error; error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); if (error >= 0) return error; error = ttioctl(tp, cmd, data, flag, p); if (error >= 0) return error; switch (cmd) { case CONSOLE_X_MODE_ON: pc_xmode_on(); return 0; case CONSOLE_X_MODE_OFF: pc_xmode_off(); return 0; case CONSOLE_X_BELL: /* * If set, data is a pointer to a length 2 array of * integers. data[0] is the pitch in Hz and data[1] * is the duration in msec. */ if (data) sysbeep(((int*)data)[0], (((int*)data)[1] * hz) / 1000); else sysbeep(BEEP_FREQ, BEEP_TIME); return 0; case CONSOLE_SET_TYPEMATIC_RATE: { u_char rate; if (!data) return EINVAL; rate = *((u_char *)data); /* * Check that it isn't too big (which would cause it to be * confused with a command). */ if (rate & 0x80) return EINVAL; typematic_rate = rate; async_update(); return 0; } default: return ENOTTY; } #ifdef DIAGNOSTIC panic("pcioctl: impossible"); #endif } #endif #define CODE_SIZE 4 /* Use a max of 4 for now... */ typedef struct { u_short type; char unshift[CODE_SIZE]; char shift[CODE_SIZE]; char ctl[CODE_SIZE]; } Scan_def; static Scan_def scan_codes[] = { NONE, "", "", "", /* 0 unused */ ASCII, "\033", "\033", "\033", /* 1 ESCape */ ASCII, "1", "!", "!", /* 2 1 */ ASCII, "2", "@", "\000", /* 3 2 */ ASCII, "3", "#", "#", /* 4 3 */ ASCII, "4", "$", "$", /* 5 4 */ ASCII, "5", "%", "%", /* 6 5 */ ASCII, "6", "^", "\036", /* 7 6 */ ASCII, "7", "&", "&", /* 8 7 */ ASCII, "8", "*", "\010", /* 9 8 */ ASCII, "9", "(", "(", /* 10 9 */ ASCII, "0", ")", ")", /* 11 0 */ ASCII, "-", "_", "\037", /* 12 - */ ASCII, "=", "+", "+", /* 13 = */ ASCII, "\177", "\177", "\010", /* 14 backspace */ ASCII, "\t", "\177\t", "\t", /* 15 tab */ ASCII, "q", "Q", "\021", /* 16 q */ ASCII, "w", "W", "\027", /* 17 w */ ASCII, "e", "E", "\005", /* 18 e */ ASCII, "r", "R", "\022", /* 19 r */ ASCII, "t", "T", "\024", /* 20 t */ ASCII, "y", "Y", "\031", /* 21 y */ ASCII, "u", "U", "\025", /* 22 u */ ASCII, "i", "I", "\011", /* 23 i */ ASCII, "o", "O", "\017", /* 24 o */ ASCII, "p", "P", "\020", /* 25 p */ ASCII, "[", "{", "\033", /* 26 [ */ ASCII, "]", "}", "\035", /* 27 ] */ ASCII, "\r", "\r", "\n", /* 28 return */ CTL, "", "", "", /* 29 control */ ASCII, "a", "A", "\001", /* 30 a */ ASCII, "s", "S", "\023", /* 31 s */ ASCII, "d", "D", "\004", /* 32 d */ ASCII, "f", "F", "\006", /* 33 f */ ASCII, "g", "G", "\007", /* 34 g */ ASCII, "h", "H", "\010", /* 35 h */ ASCII, "j", "J", "\n", /* 36 j */ ASCII, "k", "K", "\013", /* 37 k */ ASCII, "l", "L", "\014", /* 38 l */ ASCII, ";", ":", ";", /* 39 ; */ ASCII, "'", "\"", "'", /* 40 ' */ ASCII, "`", "~", "`", /* 41 ` */ SHIFT, "", "", "", /* 42 shift */ ASCII, "\\", "|", "\034", /* 43 \ */ ASCII, "z", "Z", "\032", /* 44 z */ ASCII, "x", "X", "\030", /* 45 x */ ASCII, "c", "C", "\003", /* 46 c */ ASCII, "v", "V", "\026", /* 47 v */ ASCII, "b", "B", "\002", /* 48 b */ ASCII, "n", "N", "\016", /* 49 n */ ASCII, "m", "M", "\r", /* 50 m */ ASCII, ",", "<", "<", /* 51 , */ ASCII, ".", ">", ">", /* 52 . */ ASCII, "/", "?", "\037", /* 53 / */ SHIFT, "", "", "", /* 54 shift */ KP, "*", "*", "*", /* 55 kp * */ ALT, "", "", "", /* 56 alt */ ASCII, " ", " ", "\000", /* 57 space */ CAPS, "", "", "", /* 58 caps */ FUNC, "\033[M", "\033[Y", "\033[k", /* 59 f1 */ FUNC, "\033[N", "\033[Z", "\033[l", /* 60 f2 */ FUNC, "\033[O", "\033[a", "\033[m", /* 61 f3 */ FUNC, "\033[P", "\033[b", "\033[n", /* 62 f4 */ FUNC, "\033[Q", "\033[c", "\033[o", /* 63 f5 */ FUNC, "\033[R", "\033[d", "\033[p", /* 64 f6 */ FUNC, "\033[S", "\033[e", "\033[q", /* 65 f7 */ FUNC, "\033[T", "\033[f", "\033[r", /* 66 f8 */ FUNC, "\033[U", "\033[g", "\033[s", /* 67 f9 */ FUNC, "\033[V", "\033[h", "\033[t", /* 68 f10 */ NUM, "", "", "", /* 69 num lock */ SCROLL, "", "", "", /* 70 scroll lock */ KP, "7", "\033[H", "7", /* 71 kp 7 */ KP, "8", "\033[A", "8", /* 72 kp 8 */ KP, "9", "\033[I", "9", /* 73 kp 9 */ KP, "-", "-", "-", /* 74 kp - */ KP, "4", "\033[D", "4", /* 75 kp 4 */ KP, "5", "\033[E", "5", /* 76 kp 5 */ KP, "6", "\033[C", "6", /* 77 kp 6 */ KP, "+", "+", "+", /* 78 kp + */ KP, "1", "\033[F", "1", /* 79 kp 1 */ KP, "2", "\033[B", "2", /* 80 kp 2 */ KP, "3", "\033[G", "3", /* 81 kp 3 */ KP, "0", "\033[L", "0", /* 82 kp 0 */ KP, ".", "\177", ".", /* 83 kp . */ NONE, "", "", "", /* 84 0 */ NONE, "100", "", "", /* 85 0 */ NONE, "101", "", "", /* 86 0 */ FUNC, "\033[W", "\033[i", "\033[u", /* 87 f11 */ FUNC, "\033[X", "\033[j", "\033[v", /* 88 f12 */ NONE, "102", "", "", /* 89 0 */ NONE, "103", "", "", /* 90 0 */ NONE, "", "", "", /* 91 0 */ NONE, "", "", "", /* 92 0 */ NONE, "", "", "", /* 93 0 */ NONE, "", "", "", /* 94 0 */ NONE, "", "", "", /* 95 0 */ NONE, "", "", "", /* 96 0 */ NONE, "", "", "", /* 97 0 */ NONE, "", "", "", /* 98 0 */ NONE, "", "", "", /* 99 0 */ NONE, "", "", "", /* 100 */ NONE, "", "", "", /* 101 */ NONE, "", "", "", /* 102 */ NONE, "", "", "", /* 103 */ NONE, "", "", "", /* 104 */ NONE, "", "", "", /* 105 */ NONE, "", "", "", /* 106 */ NONE, "", "", "", /* 107 */ NONE, "", "", "", /* 108 */ NONE, "", "", "", /* 109 */ NONE, "", "", "", /* 110 */ NONE, "", "", "", /* 111 */ NONE, "", "", "", /* 112 */ NONE, "", "", "", /* 113 */ NONE, "", "", "", /* 114 */ NONE, "", "", "", /* 115 */ NONE, "", "", "", /* 116 */ NONE, "", "", "", /* 117 */ NONE, "", "", "", /* 118 */ NONE, "", "", "", /* 119 */ NONE, "", "", "", /* 120 */ NONE, "", "", "", /* 121 */ NONE, "", "", "", /* 122 */ NONE, "", "", "", /* 123 */ NONE, "", "", "", /* 124 */ NONE, "", "", "", /* 125 */ NONE, "", "", "", /* 126 */ NONE, "", "", "", /* 127 */ }; /* * Get characters from the keyboard. If none are present, return NULL. */ char * sget() { u_char dt; static u_char extended = 0, shift_state = 0; static u_char capchar[2]; top: KBD_DELAY; dt = inb(KBDATAP); switch (dt) { case KBR_ACK: ack = 1; goto loop; case KBR_RESEND: nak = 1; goto loop; } #if 0 if (pc_xmode > 0) { #if defined(DDB) && defined(XSERVER_DDB) /* F12 enters the debugger while in X mode */ if (dt == 88) Debugger(); #endif capchar[0] = dt; capchar[1] = 0; /* * Check for locking keys. * * XXX Setting the LEDs this way is a bit bogus. What if the * keyboard has been remapped in X? */ switch (scan_codes[dt & 0x7f].type) { case NUM: if (dt & 0x80) { shift_state &= ~NUM; break; } if (shift_state & NUM) break; shift_state |= NUM; lock_state ^= NUM; async_update(); break; case CAPS: if (dt & 0x80) { shift_state &= ~CAPS; break; } if (shift_state & CAPS) break; shift_state |= CAPS; lock_state ^= CAPS; async_update(); break; case SCROLL: if (dt & 0x80) { shift_state &= ~SCROLL; break; } if (shift_state & SCROLL) break; shift_state |= SCROLL; lock_state ^= SCROLL; if ((lock_state & SCROLL) == 0) wakeup((caddr_t)&lock_state); async_update(); break; } return capchar; } #endif /* 0 */ switch (dt) { case KBR_EXTENDED: extended = 1; goto loop; } #ifdef DDB /* * Check for cntl-alt-esc. */ if ((dt == 1) && (shift_state & (CTL | ALT)) == (CTL | ALT)) { Debugger(); dt |= 0x80; /* discard esc (ddb discarded ctl-alt) */ } #endif /* * Check for make/break. */ if (dt & 0x80) { /* * break */ dt &= 0x7f; switch (scan_codes[dt].type) { case NUM: shift_state &= ~NUM; break; case CAPS: shift_state &= ~CAPS; break; case SCROLL: shift_state &= ~SCROLL; break; case SHIFT: shift_state &= ~SHIFT; break; case ALT: shift_state &= ~ALT; break; case CTL: shift_state &= ~CTL; break; } } else { /* * make */ switch (scan_codes[dt].type) { /* * locking keys */ case NUM: if (shift_state & NUM) break; shift_state |= NUM; lock_state ^= NUM; async_update(); break; case CAPS: if (shift_state & CAPS) break; shift_state |= CAPS; lock_state ^= CAPS; async_update(); break; case SCROLL: if (shift_state & SCROLL) break; shift_state |= SCROLL; lock_state ^= SCROLL; if ((lock_state & SCROLL) == 0) wakeup((caddr_t)&lock_state); async_update(); break; /* * non-locking keys */ case SHIFT: shift_state |= SHIFT; break; case ALT: shift_state |= ALT; break; case CTL: shift_state |= CTL; break; case ASCII: /* control has highest priority */ if (shift_state & CTL) capchar[0] = scan_codes[dt].ctl[0]; else if (shift_state & SHIFT) capchar[0] = scan_codes[dt].shift[0]; else capchar[0] = scan_codes[dt].unshift[0]; if ((lock_state & CAPS) && capchar[0] >= 'a' && capchar[0] <= 'z') { capchar[0] -= ('a' - 'A'); } capchar[0] |= (shift_state & ALT); extended = 0; return capchar; case NONE: break; case FUNC: { char *more_chars; if (shift_state & SHIFT) more_chars = scan_codes[dt].shift; else if (shift_state & CTL) more_chars = scan_codes[dt].ctl; else more_chars = scan_codes[dt].unshift; extended = 0; return more_chars; } case KP: { char *more_chars; if (shift_state & (SHIFT | CTL) || (lock_state & NUM) == 0 || extended) more_chars = scan_codes[dt].shift; else more_chars = scan_codes[dt].unshift; extended = 0; return more_chars; } } } extended = 0; loop: if ((inb(KBSTATP) & KBS_DIB) == 0) return 0; goto top; } /* ARGSUSED */ int pccngetc(cookie) void *cookie; { register char *cp; #if 0 if (pc_xmode > 0) return 0; #endif do { /* wait for byte */ while ((inb(KBSTATP) & KBS_DIB) == 0); /* see if it's worthwhile */ cp = sget(); } while (!cp); if (*cp == '\r') return '\n'; return *cp; } void pccnpollc(cookie, on) void *cookie; int on; { struct pckbd_softc *sc = cookie; polling = on; if (!on) { int s; /* * If disabling polling on a device that's been configured, * make sure there are no bytes left in the FIFO, holding up * the interrupt line. Otherwise we won't get any further * interrupts. */ if (sc != 0) { s = spltty(); pckbdintr(sc); splx(s); } } }