/* $NetBSD: bw2.c,v 1.1.1.1 1997/01/14 20:57:02 gwr Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)bwtwo.c 8.1 (Berkeley) 6/11/93 */ /* * black&white display (bw2) driver. * * Does not handle interrupts, even though they can occur. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fbvar.h" #include "bw2reg.h" cdev_decl(bw2); /* per-display variables */ struct bw2_softc { struct device sc_dev; /* base device */ struct fbdevice sc_fb; /* frame buffer device */ int sc_phys; /* display RAM (phys addr) */ }; /* autoconfiguration driver */ static void bw2attach __P((struct device *, struct device *, void *)); static int bw2match __P((struct device *, struct cfdata *, void *)); struct cfattach bwtwo_ca = { sizeof(struct bw2_softc), bw2match, bw2attach }; struct cfdriver bwtwo_cd = { NULL, "bwtwo", DV_DULL }; /* XXX we do not handle frame buffer interrupts */ static int bw2gvideo __P((struct fbdevice *, void *)); static int bw2svideo __P((struct fbdevice *, void *)); static struct fbdriver bw2fbdriver = { bw2open, bw2close, bw2mmap, fb_noioctl, bw2gvideo, bw2svideo, fb_noioctl, fb_noioctl, }; static int bw2match(parent, cf, args) struct device *parent; struct cfdata *cf; void *args; { struct confargs *ca = args; int x; #if 0 /* XXX - Assume only one is in use anyway... */ /* * This driver only supports one unit because the * system enable register is used for blanking. */ if (cf->cf_unit != 0) return (0); #endif if (ca->ca_paddr == -1) { ca->ca_paddr = BW2_FB_PADDR; } /* The peek returns -1 on bus error. */ x = bus_peek(ca->ca_bustype, ca->ca_paddr, 1); return (x != -1); } /* * Attach a display. We need to notice if it is the console, too. */ static void bw2attach(parent, self, args) struct device *parent, *self; void *args; { struct bw2_softc *sc = (struct bw2_softc *)self; struct fbdevice *fb = &sc->sc_fb; struct confargs *ca = args; struct fbtype *fbt; sc->sc_phys = ca->ca_paddr; fb->fb_driver = &bw2fbdriver; fb->fb_private = sc; fb->fb_name = sc->sc_dev.dv_xname; fbt = &fb->fb_fbtype; fbt->fb_type = FBTYPE_SUN2BW; fbt->fb_depth = 1; fbt->fb_cmsize = 0; fbt->fb_width = 1152; fbt->fb_height = 900; fbt->fb_size = BW2_FBSIZE; /* * Only the model 60 can have hi-res. * XXX - Use PROM screen size values? */ #if 0 /* XXX - Need P4 reg stuff... */ if (cpu_machine_id == SUN3_MACH_60) { int tmp; tmp = bus_peek(BUS_OBMEM, BW2_CR_PADDR, 1); if ((tmp != -1) && (tmp & 0x80) == 0) { fbt->fb_width = 1600; fbt->fb_height = 1280; fbt->fb_size = BW2_FBSIZE_HIRES; } } #endif printf(" (%dx%d)\n", fbt->fb_width, fbt->fb_height); fb_attach(fb, 1); } int bw2open(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { int unit = minor(dev); if (unit >= bwtwo_cd.cd_ndevs || bwtwo_cd.cd_devs[unit] == NULL) return (ENXIO); return (0); } int bw2close(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { return (0); } int bw2ioctl(dev, cmd, data, flags, p) dev_t dev; u_long cmd; caddr_t data; int flags; struct proc *p; { struct bw2_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; return (fbioctlfb(&sc->sc_fb, cmd, data)); } /* * Return the address that would map the given device at the given * offset, allowing for the given protection, or return -1 for error. */ int bw2mmap(dev, off, prot) dev_t dev; int off, prot; { struct bw2_softc *sc = bwtwo_cd.cd_devs[minor(dev)]; if (off & PGOFSET) return (-1); if ((unsigned)off >= sc->sc_fb.fb_fbtype.fb_size) return (-1); /* * I turned on PMAP_NC here to disable the cache as I was * getting horribly broken behaviour with it on. */ return ((sc->sc_phys + off) | PMAP_NC); } /* FBIOGVIDEO: */ static int bw2gvideo(fb, data) struct fbdevice *fb; void *data; { int *on = data; *on = (*enable_reg & ENA_VIDEO) ? 1 : 0; return (0); } /* FBIOSVIDEO */ static int bw2svideo(fb, data) struct fbdevice *fb; void *data; { int *on = data; if (*on) *enable_reg |= ENA_VIDEO; else *enable_reg &= ~ENA_VIDEO; return(0); }