930 lines
19 KiB
C
930 lines
19 KiB
C
/*
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* Copyright (c) 1992, 1995 Hellmuth Michaelis and Joerg Wunsch.
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*
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* Copyright (c) 1992, 1993 Brian Dunford-Shore and Scott Turner.
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*
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* Copyright (c) 1993 Charles M. Hannum.
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*
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* All rights reserved.
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*
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* Parts of this code regarding the NetBSD interface were written
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* by Charles M. Hannum.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz and Don Ahn.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by
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* Hellmuth Michaelis, Brian Dunford-Shore, Joerg Wunsch, Scott Turner
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* and Charles M. Hannum.
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* 4. The name authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* @(#)pcvt_drv.c, 3.32, Last Edit-Date: [Tue Oct 3 11:19:47 1995]
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*
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*/
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/*---------------------------------------------------------------------------*
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*
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* pcvt_drv.c VT220 Driver Main Module / OS - Interface
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* ---------------------------------------------------------
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* -hm ------------ Release 3.00 --------------
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* -hm integrating NetBSD-current patches
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* -hm adding ttrstrt() proto for NetBSD 0.9
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* -hm kernel/console output cursor positioning fixed
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* -hm kernel/console output switches optional to screen 0
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* -hm FreeBSD 1.1 porting
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* -hm the NetBSD 0.9 compiler detected a nondeclared var which was
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* NOT detected by neither the NetBSD-current nor FreeBSD 1.x!
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* -hm including Michael's keyboard fifo code
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* -hm Joergs patch for FreeBSD tty-malloc code
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* -hm adjustments for NetBSD-current
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* -hm FreeBSD bugfix from Joerg re timeout/untimeout casts
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* -jw including Thomas Gellekum's FreeBSD 1.1.5 patch
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* -hm adjusting #if's for NetBSD-current
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* -hm applying Joerg's patch for FreeBSD 2.0
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* -hm patch from Onno & Martin for NetBSD-current (post 1.0)
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* -hm some adjustments for NetBSD 1.0
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* -hm NetBSD PR #400: screen size report for new session
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* -hm patch from Rafael Boni/Lon Willett for NetBSD-current
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* -hm bell patch from Thomas Eberhardt for NetBSD
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* -hm multiple X server bugfixes from Lon Willett
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* -hm patch from joerg - pcdevtotty for FreeBSD pre-2.1
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* -hm delay patch from Martin Husemann after port-i386 ml-discussion
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* -jw add some code to provide more FreeBSD pre-2.1 support
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* -hm patches from Michael for NetBSD-current (Apr/21/95) support
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* -hm merged in changes from FreeBSD 2.0.5-RELEASE
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* -hm NetBSD-current patches from John Kohl
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* -hm ---------------- Release 3.30 -----------------------
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* -hm patch from Joerg in pcopen() to make mouse emulator work again
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* -hm patch from Frank van der Linden for keyboard state per VT
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* -hm no TS_ASLEEP anymore in FreeBSD 2.1.0 SNAP 950928
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* -hm ---------------- Release 3.32 -----------------------
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*
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*---------------------------------------------------------------------------*/
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#define EXTERN /* allocate mem */
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#include "pcvt_hdr.h" /* global include */
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#include "pcvt_cons.h" /* NetBSD only */
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#ifdef NOTDEF
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unsigned __debug = 0; /*0xffe */;
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static __color;
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static nrow;
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#endif
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static void vgapelinit(void); /* read initial VGA DAC palette */
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int getchar(void);
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void pccnpollc(Dev_t, int);
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int pcprobe(struct device *, struct cfdata *, void *);
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void pcattach(struct device *, struct device *, void *);
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int
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pcprobe(struct device *parent, struct cfdata *match, void *aux)
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{
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kbd_code_init();
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((struct isa_attach_args *)aux)->ia_iosize = 16;
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return 1;
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}
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void
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pcattach(struct device *parent, struct device *self, void *aux)
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{
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struct isa_attach_args *ia = aux;
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struct vt_softc *sc = (void *) self;
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int i;
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if(do_initialization)
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vt_coldinit();
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vt_coldmalloc(); /* allocate memory for screens */
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printf("\n%s: ", self->dv_xname);
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switch(adaptor_type)
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{
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case MDA_ADAPTOR:
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printf("mda");
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break;
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case CGA_ADAPTOR:
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printf("cga");
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break;
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case EGA_ADAPTOR:
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printf("ega");
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break;
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case VGA_ADAPTOR:
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printf("%s, ", (char *)vga_string(vga_type));
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if(can_do_132col)
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printf("80/132 col");
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else
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printf("80 col");
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vgapelinit();
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break;
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default:
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printf("unknown");
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break;
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}
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if(color == 0)
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printf(", mono");
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else
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printf(", color");
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printf(", %d scr, ", totalscreens);
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switch(keyboard_type)
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{
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case KB_AT:
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printf("at-");
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break;
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case KB_MFII:
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printf("mf2-");
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break;
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default:
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printf("unknown ");
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break;
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}
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printf("kbd, [R%s]\n", PCVT_REL);
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for(i = 0; i < totalscreens; i++)
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{
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vs[i].vs_tty = ttymalloc();
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tty_attach(vs[i].vs_tty);
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}
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#if PCVT_EMU_MOUSE
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pc_tty[totalscreens] = ttymalloc(); /* the mouse emulator tty */
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#endif /* PCVT_EMU_MOUSE */
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pcconsp = vs[0].vs_tty;
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async_update();
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sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
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IPL_TTY, pcintr, (void *)0);
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/*
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* Look for children of the keyboard controller.
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* XXX Really should decouple keyboard controller
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* from the console code.
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*/
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while (config_found(self, ia->ia_ic, NULL) != NULL)
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/* will break when no more children */ ;
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if(pcvt_is_console) {
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int maj;
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/* locate the major number */
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for (maj = 0; maj < nchrdev; maj++)
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if (cdevsw[maj].d_open == pcopen)
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break;
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cn_tab->cn_dev = makedev(maj, 0);
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/* minor number selects virtual screen,
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console always uses "0" (hardwired at
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various places) */
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printf("%s: console\n", sc->sc_dev.dv_xname);
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}
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}
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/* had a look at the friedl driver */
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struct tty *
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get_pccons(Dev_t dev)
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{
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register int i = minor(dev);
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#if PCVT_EMU_MOUSE
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if(i == totalscreens)
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return(pc_tty[i]);
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#endif /* PCVT_EMU_MOUSE */
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if(i >= PCVT_NSCREENS)
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return(NULL);
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return(vs[i].vs_tty);
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}
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/*---------------------------------------------------------------------------*
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* /dev/ttyc0, /dev/ttyc1, etc.
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*---------------------------------------------------------------------------*/
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int
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pcopen(Dev_t dev, int flag, int mode, struct proc *p)
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{
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register struct tty *tp;
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register struct video_state *vsx;
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int s, retval;
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int winsz = 0;
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int i = minor(dev);
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#if PCVT_EMU_MOUSE
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if(i == totalscreens)
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vsx = 0;
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else
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#endif /* PCVT_EMU_MOUSE */
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vsx = &vs[i];
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if((tp = get_pccons(dev)) == NULL)
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return ENXIO;
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#if PCVT_EMU_MOUSE
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if(i == totalscreens)
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{
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if(mouse.opened == 0)
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mouse.buttons = mouse.extendedseen =
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mouse.breakseen = mouse.lastmove.tv_sec = 0;
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mouse.minor = i;
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mouse.opened++;
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}
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else
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#endif /* PCVT_EMU_MOUSE */
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vsx->openf++;
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tp->t_oproc = pcstart;
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tp->t_param = pcparam;
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tp->t_dev = dev;
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if ((tp->t_state & TS_ISOPEN) == 0)
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{
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ttychars(tp);
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tp->t_iflag = TTYDEF_IFLAG;
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tp->t_oflag = TTYDEF_OFLAG;
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tp->t_cflag = TTYDEF_CFLAG;
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tp->t_lflag = TTYDEF_LFLAG;
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tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
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pcparam(tp, &tp->t_termios);
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ttsetwater(tp);
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}
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else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0)
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return (EBUSY);
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tp->t_state |= TS_CARR_ON;
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tp->t_cflag |= CLOCAL; /* cannot be a modem (:-) */
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if ((tp->t_state & TS_ISOPEN) == 0) /* is this a "cold" open ? */
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winsz = 1; /* yes, set winsize later */
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retval = ((*linesw[tp->t_line].l_open)(dev, tp));
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if(winsz == 1
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#if PCVT_EMU_MOUSE
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&& vsx /* the mouse device has no vsx */
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#endif /* PCVT_EMU_MOUSE */
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)
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{
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/*
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* The line discipline has clobbered t_winsize if TS_ISOPEN
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* was clear. (NetBSD PR #400 from Bill Sommerfeld)
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* We have to do this after calling the open routine, because
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* it does some other things in other/older *BSD releases -hm
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*/
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s = spltty();
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tp->t_winsize.ws_col = vsx->maxcol;
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tp->t_winsize.ws_row = vsx->screen_rows;
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tp->t_winsize.ws_xpixel = (vsx->maxcol == 80)? 720: 1056;
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tp->t_winsize.ws_ypixel = 400;
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splx(s);
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}
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return(retval);
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}
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int
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pcclose(Dev_t dev, int flag, int mode, struct proc *p)
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{
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register struct tty *tp;
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register struct video_state *vsx;
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int i = minor(dev);
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#if PCVT_EMU_MOUSE
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if(i == totalscreens)
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vsx = 0;
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else
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#endif /* PCVT_EMU_MOUSE */
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vsx = &vs[i];
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if((tp = get_pccons(dev)) == NULL)
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return ENXIO;
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(*linesw[tp->t_line].l_close)(tp, flag);
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ttyclose(tp);
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#if PCVT_EMU_MOUSE
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if(i == totalscreens)
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mouse.opened = 0;
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else
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#endif /* PCVT_EMU_MOUSE */
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vsx->openf = 0;
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#if PCVT_EMU_MOUSE
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if(i == totalscreens)
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return (0);
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#endif /* PCVT_EMU_MOUSE */
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reset_usl_modes(vsx);
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return(0);
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}
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int
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pcread(Dev_t dev, struct uio *uio, int flag)
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{
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register struct tty *tp;
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if((tp = get_pccons(dev)) == NULL)
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return ENXIO;
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return ((*linesw[tp->t_line].l_read)(tp, uio, flag));
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}
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int
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pcwrite(Dev_t dev, struct uio *uio, int flag)
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{
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register struct tty *tp;
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if((tp = get_pccons(dev)) == NULL)
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return ENXIO;
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return ((*linesw[tp->t_line].l_write)(tp, uio, flag));
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}
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struct tty *
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pctty(Dev_t dev)
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{
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register struct tty *tp;
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if((tp = get_pccons(dev)) == NULL)
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return 0;
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return tp;
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}
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int
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pcioctl(Dev_t dev, int cmd, caddr_t data, int flag, struct proc *p)
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{
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register int error;
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register struct tty *tp;
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if((tp = get_pccons(dev)) == NULL)
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return(ENXIO);
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/* note that some ioctl's are global, e.g. KBSTPMAT: There is
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* only one keyboard and different repeat rates for instance between
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* sessions are a suspicious wish. If you really need this make the
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* appropriate variables arrays
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*/
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#if PCVT_EMU_MOUSE
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if(minor(dev) == totalscreens)
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{
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if((error = mouse_ioctl(dev, cmd, data)) >= 0)
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return error;
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goto do_standard;
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}
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#endif /* PCVT_EMU_MOUSE */
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if((error = usl_vt_ioctl(dev, cmd, data, flag, p)) >= 0)
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return (error == PCVT_ERESTART) ? ERESTART : error;
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#ifdef XSERVER
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/*
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* just for compatibility:
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* XFree86 < 2.0 and SuperProbe still might use it
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*
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* NB: THIS IS A HACK! Do not use it unless you explicitly need.
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* Especially, since the vty is not put into process-controlled
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* mode (this would require the application to co-operate), any
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* attempts to switch vtys while this kind of X mode is active
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* may cause serious trouble.
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*/
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switch(cmd)
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{
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case CONSOLE_X_MODE_ON:
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{
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int i;
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if((error = usl_vt_ioctl(dev, KDENABIO, 0, flag, p)) > 0)
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return error;
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i = KD_GRAPHICS;
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if((error = usl_vt_ioctl(dev, KDSETMODE, (caddr_t)&i, flag, p))
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> 0)
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return error;
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i = K_RAW;
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error = usl_vt_ioctl(dev, KDSKBMODE, (caddr_t)&i, flag, p);
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return error;
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}
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case CONSOLE_X_MODE_OFF:
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{
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int i;
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(void)usl_vt_ioctl(dev, KDDISABIO, 0, flag, p);
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i = KD_TEXT;
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(void)usl_vt_ioctl(dev, KDSETMODE, (caddr_t)&i, flag, p);
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i = K_XLATE;
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(void)usl_vt_ioctl(dev, KDSKBMODE, (caddr_t)&i, flag, p);
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return 0;
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}
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case CONSOLE_X_BELL:
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/*
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* If `data' is non-null, the first int value denotes
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* the pitch, the second a duration. Otherwise, behaves
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* like BEL.
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*/
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if (data)
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{
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sysbeep(((int *)data)[0],
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((int *)data)[1] * hz / 1000);
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}
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else
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{
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sysbeep(PCVT_SYSBEEPF / 1493, hz / 4);
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}
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return (0);
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default: /* fall through */ ;
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}
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#endif /* XSERVER */
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if((error = kbdioctl(dev,cmd,data,flag)) >= 0)
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return error;
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if((error = vgaioctl(dev,cmd,data,flag)) >= 0)
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return error;
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#if PCVT_EMU_MOUSE
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do_standard:
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#endif /* PCVT_EMU_MOUSE */
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if((error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p)) >= 0)
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return (error);
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if((error = ttioctl(tp, cmd, data, flag, p)) >= 0)
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return (error);
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return (ENOTTY);
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}
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int
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pcmmap(Dev_t dev, int offset, int nprot)
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{
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if (offset > 0x20000)
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return -1;
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return i386_btop((0xa0000 + offset));
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}
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/*---------------------------------------------------------------------------*
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*
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* handle a keyboard receive interrupt
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*
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* NOTE: the keyboard is multiplexed by means of "pcconsp"
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* between virtual screens. pcconsp - switching is done in
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* the vgapage() routine
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*
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*---------------------------------------------------------------------------*/
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#if PCVT_KBD_FIFO
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u_char pcvt_kbd_fifo[PCVT_KBD_FIFO_SZ];
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int pcvt_kbd_wptr = 0;
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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_pid == 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
|
|
*---------------------------------------------------------------------------*/
|
|
|
|
|
|
int
|
|
pccnattach()
|
|
{
|
|
static struct consdev pccons = { NULL, NULL,
|
|
pccngetc, pccnputc, pccnpollc, NODEV, CN_NORMAL};
|
|
|
|
cn_tab = &pccons;
|
|
|
|
pcvt_is_console = 1;
|
|
|
|
return(0);
|
|
}
|
|
|
|
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));
|
|
}
|
|
|
|
/*-------------------------- E O F -------------------------------------*/
|