e0cc03a09b
kqueue provides a stateful and efficient event notification framework currently supported events include socket, file, directory, fifo, pipe, tty and device changes, and monitoring of processes and signals kqueue is supported by all writable filesystems in NetBSD tree (with exception of Coda) and all device drivers supporting poll(2) based on work done by Jonathan Lemon for FreeBSD initial NetBSD port done by Luke Mewburn and Jason Thorpe
460 lines
10 KiB
C
460 lines
10 KiB
C
/* $NetBSD: grf.c,v 1.31 2002/10/23 09:10:51 jdolecek Exp $ */
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/*
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* Copyright (c) 1995 Leo Weppelman
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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 the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: grf.c 1.31 91/01/21$
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*
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* @(#)grf.c 7.8 (Berkeley) 5/7/91
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*/
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/*
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* Graphics display driver for the Atari
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* This is the hardware-independent portion of the driver.
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* Hardware access is through the grf_softc->g_mode routine.
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*/
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/ioctl.h>
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#include <sys/device.h>
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#include <sys/file.h>
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#include <sys/malloc.h>
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#include <sys/conf.h>
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#include <sys/systm.h>
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#include <sys/vnode.h>
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#include <sys/mman.h>
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#include <machine/cpu.h>
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#include <uvm/uvm_extern.h>
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#include <atari/atari/device.h>
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#include <atari/dev/grfioctl.h>
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#include <atari/dev/grfabs_reg.h>
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#include <atari/dev/grfvar.h>
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#include <atari/dev/itevar.h>
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#include <atari/dev/viewioctl.h>
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#include <atari/dev/viewvar.h>
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#include "grfcc.h"
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#include "grfet.h"
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#define NGRF (NGRFCC + NGRFET)
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#if NGRF > 0
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#include "ite.h"
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#if NITE == 0
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#define ite_on(u,f)
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#define ite_off(u,f)
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#define ite_reinit(d)
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#endif
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int grfon __P((dev_t));
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int grfoff __P((dev_t));
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int grfsinfo __P((dev_t, struct grfdyninfo *));
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int grfbusprint __P((void *auxp, const char *));
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int grfbusmatch __P((struct device *, struct cfdata *, void *));
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void grfbusattach __P((struct device *, struct device *, void *));
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/*
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* pointers to grf drivers device structs
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*/
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struct grf_softc *grfsp[NGRF]; /* XXX */
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CFATTACH_DECL(grfbus, sizeof(struct device),
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grfbusmatch, grfbusattach, NULL, NULL);
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extern struct cfdriver grfbus_cd;
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dev_type_open(grfopen);
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dev_type_close(grfclose);
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dev_type_ioctl(grfioctl);
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dev_type_mmap(grfmmap);
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const struct cdevsw grf_cdevsw = {
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grfopen, grfclose, noread, nowrite, grfioctl,
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nostop, notty, nopoll, grfmmap, nokqfilter,
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};
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/*
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* only used in console init.
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*/
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static struct cfdata *cfdata_gbus = NULL;
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int
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grfbusmatch(pdp, cfp, auxp)
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struct device *pdp;
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struct cfdata *cfp;
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void *auxp;
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{
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if(strcmp(auxp, grfbus_cd.cd_name))
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return(0);
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if(atari_realconfig == 0)
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cfdata_gbus = cfp;
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return(1); /* Always there */
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}
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void
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grfbusattach(pdp, dp, auxp)
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struct device *pdp, *dp;
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void *auxp;
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{
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grf_auxp_t grf_auxp;
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grf_auxp.busprint = grfbusprint;
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grf_auxp.from_bus_match = 1;
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if(dp == NULL) /* Console init */
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atari_config_found(cfdata_gbus, NULL, (void*)&grf_auxp, grfbusprint);
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else {
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printf("\n");
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config_found(dp, (void*)&grf_auxp, grfbusprint);
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}
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}
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int
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grfbusprint(auxp, name)
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void *auxp;
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const char *name;
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{
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if(name == NULL)
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return(UNCONF);
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return(QUIET);
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}
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/*ARGSUSED*/
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int
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grfopen(dev, flags, devtype, p)
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dev_t dev;
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int flags, devtype;
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struct proc *p;
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{
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struct grf_softc *gp;
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if (GRFUNIT(dev) >= NGRF)
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return(ENXIO);
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gp = grfsp[GRFUNIT(dev)];
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if (gp == NULL)
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return(ENXIO);
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if ((gp->g_flags & GF_ALIVE) == 0)
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return(ENXIO);
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if ((gp->g_flags & (GF_OPEN|GF_EXCLUDE)) == (GF_OPEN|GF_EXCLUDE))
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return(EBUSY);
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grf_viewsync(gp);
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return(0);
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}
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/*ARGSUSED*/
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int
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grfclose(dev, flags, mode, p)
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dev_t dev;
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int flags;
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int mode;
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struct proc *p;
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{
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struct grf_softc *gp;
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gp = grfsp[GRFUNIT(dev)];
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(void)grfoff(dev);
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gp->g_flags &= GF_ALIVE;
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return(0);
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}
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/*ARGSUSED*/
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int
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grfioctl(dev, cmd, data, flag, p)
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dev_t dev;
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u_long cmd;
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int flag;
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caddr_t data;
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struct proc *p;
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{
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struct grf_softc *gp;
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int error;
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extern const struct cdevsw view_cdevsw;
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gp = grfsp[GRFUNIT(dev)];
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error = 0;
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switch (cmd) {
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case OGRFIOCGINFO:
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/* argl.. no bank-member.. */
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bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo)-4);
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break;
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case GRFIOCGINFO:
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bcopy((caddr_t)&gp->g_display, data, sizeof(struct grfinfo));
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break;
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case GRFIOCON:
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error = grfon(dev);
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break;
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case GRFIOCOFF:
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error = grfoff(dev);
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break;
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case GRFIOCSINFO:
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error = grfsinfo(dev, (struct grfdyninfo *) data);
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break;
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case GRFGETVMODE:
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return(gp->g_mode(gp, GM_GRFGETVMODE, data, 0, 0));
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case GRFSETVMODE:
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error = gp->g_mode(gp, GM_GRFSETVMODE, data, 0, 0);
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if (error == 0 && gp->g_itedev)
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ite_reinit(gp->g_itedev);
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break;
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case GRFGETNUMVM:
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return(gp->g_mode(gp, GM_GRFGETNUMVM, data, 0, 0));
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/*
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* these are all hardware dependant, and have to be resolved
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* in the respective driver.
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*/
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case GRFIOCPUTCMAP:
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case GRFIOCGETCMAP:
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case GRFIOCSSPRITEPOS:
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case GRFIOCGSPRITEPOS:
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case GRFIOCSSPRITEINF:
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case GRFIOCGSPRITEINF:
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case GRFIOCGSPRITEMAX:
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default:
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/*
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* check to see whether it's a command recognized by the
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* view code.
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*/
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return((*view_cdevsw.d_ioctl)(gp->g_viewdev, cmd, data, flag,
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p));
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error = EINVAL;
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break;
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}
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return(error);
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}
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/*
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* map the contents of a graphics display card into process'
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* memory space.
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*/
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paddr_t
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grfmmap(dev, off, prot)
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dev_t dev;
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off_t off;
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int prot;
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{
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struct grf_softc *gp;
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struct grfinfo *gi;
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u_int vgabase, linbase;
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gp = grfsp[GRFUNIT(dev)];
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gi = &gp->g_display;
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vgabase = gi->gd_vgabase;
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linbase = gi->gd_linbase;
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/*
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* control registers
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*/
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if (off >= 0 && off < gi->gd_regsize)
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return(((paddr_t)gi->gd_regaddr + off) >> PGSHIFT);
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/*
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* VGA memory
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*/
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if (off >= vgabase && off < (vgabase + gi->gd_vgasize))
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return(((paddr_t)gi->gd_vgaaddr - vgabase + off) >> PGSHIFT);
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/*
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* frame buffer
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*/
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if (off >= linbase && off < (linbase + gi->gd_fbsize))
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return(((paddr_t)gi->gd_fbaddr - linbase + off) >> PGSHIFT);
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return(-1);
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}
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int
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grfon(dev)
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dev_t dev;
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{
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struct grf_softc *gp;
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gp = grfsp[GRFUNIT(dev)];
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if (gp->g_flags & GF_GRFON)
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return(0);
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gp->g_flags |= GF_GRFON;
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if (gp->g_itedev != NODEV)
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ite_off(gp->g_itedev, 3);
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return(gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVON : GM_GRFON,
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NULL, 0, 0));
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}
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int
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grfoff(dev)
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dev_t dev;
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{
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struct grf_softc *gp;
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int error;
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gp = grfsp[GRFUNIT(dev)];
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if ((gp->g_flags & GF_GRFON) == 0)
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return(0);
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gp->g_flags &= ~GF_GRFON;
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error = gp->g_mode(gp, (dev & GRFOVDEV) ? GM_GRFOVOFF : GM_GRFOFF,
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NULL, 0, 0);
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/*
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* Closely tied together no X's
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*/
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if (gp->g_itedev != NODEV)
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ite_on(gp->g_itedev, 2);
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return(error);
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}
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int
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grfsinfo(dev, dyninfo)
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dev_t dev;
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struct grfdyninfo *dyninfo;
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{
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struct grf_softc *gp;
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int error;
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gp = grfsp[GRFUNIT(dev)];
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error = gp->g_mode(gp, GM_GRFCONFIG, dyninfo, 0, 0);
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/*
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* Closely tied together no X's
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*/
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if (gp->g_itedev != NODEV)
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ite_reinit(gp->g_itedev);
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return(error);
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}
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/*
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* Get the grf-info in sync with underlying view.
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*/
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void
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grf_viewsync(gp)
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struct grf_softc *gp;
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{
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struct view_size vs;
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bmap_t bm;
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struct grfinfo *gi;
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extern const struct cdevsw view_cdevsw;
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gi = &gp->g_display;
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(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCGBMAP, (caddr_t)&bm,
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0, NOPROC);
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gp->g_data = (caddr_t) 0xDeadBeaf; /* not particularly clean.. */
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gi->gd_fbaddr = bm.hw_address;
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gi->gd_fbsize = bm.phys_mappable;
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gi->gd_linbase = bm.lin_base;
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gi->gd_regaddr = bm.hw_regs;
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gi->gd_regsize = bm.reg_size;
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gi->gd_vgaaddr = bm.vga_address;
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gi->gd_vgasize = bm.vga_mappable;
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gi->gd_vgabase = bm.vga_base;
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if((*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCGSIZE, (caddr_t)&vs, 0,
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NOPROC)) {
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/*
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* fill in some default values...
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* XXX: Should _never_ happen
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*/
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vs.width = 640;
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vs.height = 400;
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vs.depth = 1;
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}
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gi->gd_colors = 1 << vs.depth;
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gi->gd_planes = vs.depth;
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gi->gd_fbwidth = vs.width;
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gi->gd_fbheight = vs.height;
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gi->gd_dyn.gdi_fbx = 0;
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gi->gd_dyn.gdi_fby = 0;
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gi->gd_dyn.gdi_dwidth = vs.width;
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gi->gd_dyn.gdi_dheight = vs.height;
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gi->gd_dyn.gdi_dx = 0;
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gi->gd_dyn.gdi_dy = 0;
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}
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/*
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* Change the mode of the display.
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* Right now all we can do is grfon/grfoff.
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* Return a UNIX error number or 0 for success.
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*/
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/*ARGSUSED*/
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int
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grf_mode(gp, cmd, arg, a2, a3)
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struct grf_softc *gp;
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int cmd, a2, a3;
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void *arg;
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{
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extern const struct cdevsw view_cdevsw;
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switch (cmd) {
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case GM_GRFON:
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/*
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* Get in sync with view, ite might have changed it.
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*/
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grf_viewsync(gp);
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(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCDISPLAY,
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NULL, 0, NOPROC);
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return(0);
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case GM_GRFOFF:
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(*view_cdevsw.d_ioctl)(gp->g_viewdev, VIOCREMOVE,
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NULL, 0, NOPROC);
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return(0);
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case GM_GRFCONFIG:
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default:
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break;
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}
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return(EPASSTHROUGH);
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}
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#endif /* NGRF > 0 */
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