/* $OpenBSD: pcvt_drv.c,v 1.22 1998/11/20 15:57:25 deraadt Exp $ */ /* * Copyright (c) 1992, 1995 Hellmuth Michaelis and Joerg Wunsch. * * Copyright (c) 1992, 1993 Brian Dunford-Shore and Scott Turner. * * Copyright (c) 1993 Charles Hannum. * * All rights reserved. * * Parts of this code regarding the NetBSD interface were written * by Charles Hannum. * * 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 * Hellmuth Michaelis, Brian Dunford-Shore, Joerg Wunsch, Scott Turner * and Charles Hannum. * 4. The name authors may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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. * * * @(#)pcvt_drv.c, 3.32, Last Edit-Date: [Tue Oct 3 11:19:47 1995] * */ /*---------------------------------------------------------------------------* * * pcvt_drv.c VT220 Driver Main Module / OS - Interface * --------------------------------------------------------- * -hm ------------ Release 3.00 -------------- * -hm integrating NetBSD-current patches * -hm adding ttrstrt() proto for NetBSD 0.9 * -hm kernel/console output cursor positioning fixed * -hm kernel/console output switches optional to screen 0 * -hm FreeBSD 1.1 porting * -hm the NetBSD 0.9 compiler detected a nondeclared var which was * NOT detected by neither the NetBSD-current nor FreeBSD 1.x! * -hm including Michael's keyboard fifo code * -hm Joergs patch for FreeBSD tty-malloc code * -hm adjustments for NetBSD-current * -hm FreeBSD bugfix from Joerg re timeout/untimeout casts * -jw including Thomas Gellekum's FreeBSD 1.1.5 patch * -hm adjusting #if's for NetBSD-current * -hm applying Joerg's patch for FreeBSD 2.0 * -hm patch from Onno & Martin for NetBSD-current (post 1.0) * -hm some adjustments for NetBSD 1.0 * -hm NetBSD PR #400: screen size report for new session * -hm patch from Rafael Boni/Lon Willett for NetBSD-current * -hm bell patch from Thomas Eberhardt for NetBSD * -hm multiple X server bugfixes from Lon Willett * -hm patch from joerg - pcdevtotty for FreeBSD pre-2.1 * -hm delay patch from Martin Husemann after port-i386 ml-discussion * -jw add some code to provide more FreeBSD pre-2.1 support * -hm patches from Michael for NetBSD-current (Apr/21/95) support * -hm merged in changes from FreeBSD 2.0.5-RELEASE * -hm NetBSD-current patches from John Kohl * -hm ---------------- Release 3.30 ----------------------- * -hm patch from Joerg in pcopen() to make mouse emulator work again * -hm patch from Frank van der Linden for keyboard state per VT * -hm no TS_ASLEEP anymore in FreeBSD 2.1.0 SNAP 950928 * -hm ---------------- Release 3.32 ----------------------- * *---------------------------------------------------------------------------*/ #include "vt.h" #if NVT > 0 #define EXTERN /* allocate mem */ #include "pcvt_hdr.h" /* global include */ #ifdef NOTDEF unsigned __debug = 0; /*0xffe */; static __color; static nrow; #endif static void vgapelinit(void); /* read initial VGA DAC palette */ int getchar(void); void pccnpollc(Dev_t, int); int pcprobe(struct device *, void *, void *); void pcattach(struct device *, struct device *, void *); int pcprobe(struct device *parent, void *match, void *aux) { kbd_code_init(); ((struct isa_attach_args *)aux)->ia_iosize = 16; return 1; } void pcattach(struct device *parent, struct device *self, void *aux) { struct isa_attach_args *ia = aux; struct vt_softc *sc = (void *) self; int maj; int i; if(do_initialization) vt_coldinit(); vt_coldmalloc(); /* allocate memory for screens */ printf(": "); switch(adaptor_type) { case MDA_ADAPTOR: printf("mda"); break; case CGA_ADAPTOR: printf("cga"); break; case EGA_ADAPTOR: printf("ega"); break; case VGA_ADAPTOR: printf("%s, ", (char *)vga_string(vga_type)); if(can_do_132col) printf("80/132 col"); else printf("80 col"); vgapelinit(); break; default: printf("unknown"); break; } if (color == 0) printf(", mono"); else printf(", color"); printf(", %d scr, ", totalscreens); switch(keyboard_type) { case KB_AT: printf("at-"); break; case KB_MFII: printf("mf2-"); break; default: printf("unknown "); break; } printf("kbd\n"); for (maj = 0; maj < nchrdev; maj++) { if ((u_int)cdevsw[maj].d_open == (u_int)pcopen) break; } for(i = 0; i < totalscreens; i++) { vs[i].vs_tty = ttymalloc(); vs[i].vs_tty->t_dev = makedev(maj, i); tty_attach(vs[i].vs_tty); } #if PCVT_EMU_MOUSE pc_tty[totalscreens] = ttymalloc(); /* the mouse emulator tty */ #endif /* PCVT_EMU_MOUSE */ pcconsp = vs[0].vs_tty; async_update(); sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, IPL_TTY, pcintr, (void *)0, sc->sc_dev.dv_xname); /* * Look for children of the keyboard controller. * XXX Really should decouple keyboard controller * from the console code. */ while (config_found(self, ia->ia_ic, NULL) != NULL) /* will break when no more children */ ; } /* had a look at the friedl driver */ struct tty * get_pccons(Dev_t dev) { register int i = minor(dev); #if PCVT_EMU_MOUSE if(i == totalscreens) return(pc_tty[i]); #endif /* PCVT_EMU_MOUSE */ if(i >= PCVT_NSCREENS) return(NULL); return(vs[i].vs_tty); } /*---------------------------------------------------------------------------* * /dev/ttyc0, /dev/ttyc1, etc. *---------------------------------------------------------------------------*/ int pcopen(Dev_t dev, int flag, int mode, struct proc *p) { register struct tty *tp; register struct video_state *vsx; int s, retval; int winsz = 0; int i = minor(dev); #if PCVT_EMU_MOUSE if(i == totalscreens) vsx = 0; else #endif /* PCVT_EMU_MOUSE */ vsx = &vs[i]; if((tp = get_pccons(dev)) == NULL) return ENXIO; #if PCVT_EMU_MOUSE if(i == totalscreens) { if(mouse.opened == 0) mouse.buttons = mouse.extendedseen = mouse.breakseen = mouse.lastmove.tv_sec = 0; mouse.minor = i; mouse.opened++; } else #endif /* PCVT_EMU_MOUSE */ vsx->openf++; tp->t_oproc = pcstart; tp->t_param = pcparam; tp->t_dev = dev; if ((tp->t_state & TS_ISOPEN) == 0) { tp->t_state |= TS_WOPEN; ttychars(tp); tp->t_iflag = TTYDEF_IFLAG; tp->t_oflag = TTYDEF_OFLAG; tp->t_cflag = TTYDEF_CFLAG; tp->t_lflag = TTYDEF_LFLAG; tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; pcparam(tp, &tp->t_termios); ttsetwater(tp); } else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) return (EBUSY); tp->t_state |= TS_CARR_ON; tp->t_cflag |= CLOCAL; /* cannot be a modem (:-) */ if ((tp->t_state & TS_ISOPEN) == 0) /* is this a "cold" open ? */ winsz = 1; /* yes, set winsize later */ retval = ((*linesw[tp->t_line].l_open)(dev, tp)); if(winsz == 1 #if PCVT_EMU_MOUSE && vsx /* the mouse device has no vsx */ #endif /* PCVT_EMU_MOUSE */ ) { /* * The line discipline has clobbered t_winsize if TS_ISOPEN * was clear. (NetBSD PR #400 from Bill Sommerfeld) * We have to do this after calling the open routine, because * it does some other things in other/older *BSD releases -hm */ s = spltty(); tp->t_winsize.ws_col = vsx->maxcol; tp->t_winsize.ws_row = vsx->screen_rows; tp->t_winsize.ws_xpixel = (vsx->maxcol == 80)? 720: 1056; tp->t_winsize.ws_ypixel = 400; splx(s); } return(retval); } int pcclose(Dev_t dev, int flag, int mode, struct proc *p) { register struct tty *tp; register struct video_state *vsx; int i = minor(dev); #if PCVT_EMU_MOUSE if(i == totalscreens) vsx = 0; else #endif /* PCVT_EMU_MOUSE */ vsx = &vs[i]; if((tp = get_pccons(dev)) == NULL) return ENXIO; (*linesw[tp->t_line].l_close)(tp, flag); ttyclose(tp); #if PCVT_EMU_MOUSE if(i == totalscreens) mouse.opened = 0; else #endif /* PCVT_EMU_MOUSE */ vsx->openf = 0; #if PCVT_EMU_MOUSE if(i == totalscreens) return (0); #endif /* PCVT_EMU_MOUSE */ reset_usl_modes(vsx); return(0); } int pcread(Dev_t dev, struct uio *uio, int flag) { register struct tty *tp; if((tp = get_pccons(dev)) == NULL) return ENXIO; return ((*linesw[tp->t_line].l_read)(tp, uio, flag)); } int pcwrite(Dev_t dev, struct uio *uio, int flag) { register struct tty *tp; if((tp = get_pccons(dev)) == NULL) return ENXIO; return ((*linesw[tp->t_line].l_write)(tp, uio, flag)); } struct tty * pctty(Dev_t dev) { register struct tty *tp; if((tp = get_pccons(dev)) == NULL) return 0; return tp; } int pcioctl(Dev_t dev, int cmd, caddr_t data, int flag, struct proc *p) { register int error; register struct tty *tp; if((tp = get_pccons(dev)) == NULL) return(ENXIO); /* note that some ioctl's are global, e.g. KBSTPMAT: There is * only one keyboard and different repeat rates for instance between * sessions are a suspicious wish. If you really need this make the * appropriate variables arrays */ #if PCVT_EMU_MOUSE if(minor(dev) == totalscreens) { if((error = mouse_ioctl(dev, cmd, data)) >= 0) return error; goto do_standard; } #endif /* PCVT_EMU_MOUSE */ if((error = usl_vt_ioctl(dev, cmd, data, flag, p)) >= 0) return (error == PCVT_ERESTART) ? ERESTART : error; #ifdef XSERVER /* * just for compatibility: * XFree86 < 2.0 and SuperProbe still might use it * * NB: THIS IS A HACK! Do not use it unless you explicitly need. * Especially, since the vty is not put into process-controlled * mode (this would require the application to co-operate), any * attempts to switch vtys while this kind of X mode is active * may cause serious trouble. */ switch(cmd) { case CONSOLE_X_MODE_ON: { int i; if((error = usl_vt_ioctl(dev, KDENABIO, 0, flag, p)) > 0) return error; i = KD_GRAPHICS; if((error = usl_vt_ioctl(dev, KDSETMODE, (caddr_t)&i, flag, p)) > 0) return error; i = K_RAW; error = usl_vt_ioctl(dev, KDSKBMODE, (caddr_t)&i, flag, p); ttyflush(tp, FREAD); return error; } case CONSOLE_X_MODE_OFF: { int i; (void)usl_vt_ioctl(dev, KDDISABIO, 0, flag, p); i = KD_TEXT; (void)usl_vt_ioctl(dev, KDSETMODE, (caddr_t)&i, flag, p); i = K_XLATE; (void)usl_vt_ioctl(dev, KDSKBMODE, (caddr_t)&i, flag, p); ttyflush(tp, FREAD); return 0; } case CONSOLE_X_BELL: /* * If `data' is non-null, the first int value denotes * the pitch, the second a duration. Otherwise, behaves * like BEL. */ if (data) { sysbeep(((int *)data)[0], ((int *)data)[1] * hz / 1000); } else { sysbeep(PCVT_SYSBEEPF / 1493, hz / 4); } return (0); default: /* fall through */ ; } #endif /* XSERVER */ if((error = kbdioctl(dev,cmd,data,flag)) >= 0) return error; if((error = vgaioctl(dev,cmd,data,flag)) >= 0) return error; #if PCVT_EMU_MOUSE do_standard: #endif /* PCVT_EMU_MOUSE */ if((error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p)) >= 0) return (error); if((error = ttioctl(tp, cmd, data, flag, p)) >= 0) return (error); return (ENOTTY); } int pcmmap(Dev_t dev, int offset, int nprot) { if ((u_int)offset > 0x20000) return -1; return i386_btop((0xa0000 + offset)); } /*---------------------------------------------------------------------------* * * handle a keyboard receive interrupt * * NOTE: the keyboard is multiplexed by means of "pcconsp" * between virtual screens. pcconsp - switching is done in * the vgapage() routine * *---------------------------------------------------------------------------*/ #if PCVT_KBD_FIFO u_char pcvt_kbd_fifo[PCVT_KBD_FIFO_SZ]; int pcvt_kbd_wptr = 0; int pcvt_kbd_rptr = 0; short pcvt_kbd_count= 0; static u_char pcvt_timeout_scheduled = 0; static void pcvt_timeout (void *arg) { u_char *cp; int s; pcvt_timeout_scheduled = 0; #if PCVT_SCREENSAVER pcvt_scrnsv_reset(); #endif /* PCVT_SCREENSAVER */ while (pcvt_kbd_count) { if (((cp = sgetc(1)) != 0) && (vs[current_video_screen].openf)) { #if PCVT_NULLCHARS if(*cp == '\0') { /* pass a NULL character */ (*linesw[pcconsp->t_line].l_rint)('\0', pcconsp); } /* XXX */ else #endif /* PCVT_NULLCHARS */ while (*cp) (*linesw[pcconsp->t_line].l_rint)(*cp++ & 0xff, pcconsp); } s = spltty(); if (!pcvt_kbd_count) pcvt_timeout_scheduled = 0; splx(s); } return; } #endif int pcintr(void *arg) { #if PCVT_KBD_FIFO u_char dt; u_char ret = -1; int s; #else /* !PCVT_KBD_FIFO */ u_char *cp; #endif /* PCVT_KBD_FIFO */ #if PCVT_SCREENSAVER pcvt_scrnsv_reset(); #endif /* PCVT_SCREENSAVER */ #if PCVT_KBD_FIFO if (kbd_polling) { if(sgetc(1) == 0) return -1; else return 1; } while (inb(CONTROLLER_CTRL) & STATUS_OUTPBF) /* check 8042 buffer */ { ret = 1; /* got something */ PCVT_KBD_DELAY(); /* 7 us delay */ dt = inb(CONTROLLER_DATA); /* get it 8042 data */ if (pcvt_kbd_count >= PCVT_KBD_FIFO_SZ) /* fifo overflow ? */ { log (LOG_WARNING, "pcvt: keyboard buffer overflow\n"); } else { pcvt_kbd_fifo[pcvt_kbd_wptr++] = dt; /* data -> fifo */ s = spltty(); /* XXX necessary ? */ pcvt_kbd_count++; /* update fifo count */ splx(s); if (pcvt_kbd_wptr >= PCVT_KBD_FIFO_SZ) pcvt_kbd_wptr = 0; /* wraparound pointer */ } } if (ret == 1) /* got data from keyboard ? */ { if (!pcvt_timeout_scheduled) /* if not already active .. */ { s = spltty(); pcvt_timeout_scheduled = 1; /* flag active */ timeout((TIMEOUT_FUNC_T)pcvt_timeout, (caddr_t) 0, 1); /* fire off */ splx(s); } } return (ret); #else /* !PCVT_KBD_FIFO */ if((cp = sgetc(1)) == 0) return -1; if (kbd_polling) return 1; if(!(vs[current_video_screen].openf)) /* XXX was vs[minor(dev)] */ return 1; #if PCVT_NULLCHARS if(*cp == '\0') { /* pass a NULL character */ (*linesw[pcconsp->t_line].l_rint)('\0', pcconsp); return 1; } #endif /* PCVT_NULLCHARS */ while (*cp) (*linesw[pcconsp->t_line].l_rint)(*cp++ & 0xff, pcconsp); return 1; #endif /* PCVT_KBD_FIFO */ } void pcstart(register struct tty *tp) { int s, len; u_char buf[PCVT_PCBURST]; s = spltty(); if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP)) goto out; if (tp->t_outq.c_cc == 0 && tp->t_wsel.si_selpid == 0) { async_update(); goto low; } tp->t_state |= TS_BUSY; splx(s); /* * We need to do this outside spl since it could be fairly * expensive and we don't want our serial ports to overflow. */ while ((len = q_to_b(&tp->t_outq, buf, PCVT_PCBURST)) != 0) sput(&buf[0], 0, len, minor(tp->t_dev)); s = spltty(); tp->t_state &= ~TS_BUSY; tp->t_state |= TS_TIMEOUT; timeout(ttrstrt, tp, 1); if (tp->t_outq.c_cc <= tp->t_lowat) { low: if (tp->t_state&TS_ASLEEP) { tp->t_state &= ~TS_ASLEEP; wakeup((caddr_t)&tp->t_outq); } selwakeup(&tp->t_wsel); } out: splx(s); } void pcstop(struct tty *tp, int flag) { } /*---------------------------------------------------------------------------* * /dev/console *---------------------------------------------------------------------------*/ void pccnprobe(struct consdev *cp) { int maj; /* locate the major number */ for (maj = 0; maj < nchrdev; maj++) { if ((u_int)cdevsw[maj].d_open == (u_int)pcopen) break; } if (maj == nchrdev) { /* we are not in cdevsw[], give up */ panic("pcvt is not in cdevsw[]"); } /* initialize required fields */ cp->cn_dev = makedev(maj, 0); cp->cn_pri = CN_INTERNAL; } void pccninit(struct consdev *cp) { pcvt_is_console = 1; } void pccnputc(Dev_t dev, U_char c) { #if PCVT_SW0CNOUTP if(current_video_screen != 0) { switch_screen(0, 0); } #endif /* PCVT_SW0CNOUTP */ if (c == '\n') sput("\r", 1, 1, 0); sput((char *) &c, 1, 1, 0); async_update(); } int pccngetc(Dev_t dev) { register int s; register u_char *cp; #ifdef XSERVER if (dev != NODEV && vs[minor(dev)].kbd_state == K_RAW) return 0; #endif /* XSERVER */ s = spltty(); /* block pcrint while we poll */ cp = sgetc(0); splx(s); async_update(); /* this belongs to cons.c */ if (*cp == '\r') return('\n'); return (*cp); } void pccnpollc(Dev_t dev, int on) { struct vt_softc *sc = NULL; /* XXX not used */ kbd_polling = on; if (!on) { register int s; /* * If disabling polling, make sure there are no bytes left in * the FIFO, holding up the interrupt line. Otherwise we * won't get any further interrupts. */ s = spltty(); pcintr(sc); splx(s); } } /*---------------------------------------------------------------------------* * Set line parameters *---------------------------------------------------------------------------*/ int pcparam(struct tty *tp, struct termios *t) { register int cflag = t->c_cflag; /* and copy to tty */ tp->t_ispeed = t->c_ispeed; tp->t_ospeed = t->c_ospeed; tp->t_cflag = cflag; return(0); } /* special characters */ #define bs 8 #define lf 10 #define cr 13 #define cntlc 3 #define del 0177 #define cntld 4 int getchar(void) { u_char thechar; int x; kbd_polling = 1; x = splhigh(); sput(">", 1, 1, 0); async_update(); thechar = *(sgetc(0)); kbd_polling = 0; splx(x); switch (thechar) { default: if (thechar >= ' ') sput(&thechar, 1, 1, 0); return(thechar); case cr: case lf: sput("\r\n", 1, 2, 0); return(lf); case bs: case del: sput("\b \b", 1, 3, 0); return(thechar); case cntlc: sput("^C\r\n", 1, 4, 0) ; cpu_reset(); case cntld: sput("^D\r\n", 1, 4, 0) ; return(0); } } /*----------------------------------------------------------------------* * read initial VGA palette (as stored by VGA ROM BIOS) into * palette save area *----------------------------------------------------------------------*/ void vgapelinit(void) { register unsigned idx; register struct rgb *val; /* first, read all and store to first screen's save buffer */ for(idx = 0, val = vs[0].palette; idx < NVGAPEL; idx++, val++) vgapaletteio(idx, val, 0 /* read it */); /* now, duplicate for remaining screens */ for(idx = 1; idx < PCVT_NSCREENS; idx++) bcopy(vs[0].palette, vs[idx].palette, NVGAPEL * sizeof(struct rgb)); } #endif /* NVT > 0 */ /*-------------------------- E O F -------------------------------------*/