/* $NetBSD: cgthree.c,v 1.40 1998/11/19 15:38:24 mrg Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Paul Kranenburg. * * 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 NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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. */ /* * 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. * * @(#)cgthree.c 8.2 (Berkeley) 10/30/93 */ /* * color display (cgthree) driver. * * Does not handle interrupts, even though they can occur. * * XXX should defer colormap updates to vertical retrace interrupts */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* per-display variables */ struct cgthree_softc { struct device sc_dev; /* base device */ struct sbusdev sc_sd; /* sbus device */ struct fbdevice sc_fb; /* frame buffer device */ bus_space_tag_t sc_bustag; bus_type_t sc_btype; /* phys address description */ bus_addr_t sc_paddr; /* for device mmap() */ volatile struct fbcontrol *sc_fbc; /* Brooktree registers */ union bt_cmap sc_cmap; /* Brooktree color map */ }; /* autoconfiguration driver */ static int cgthreematch_sbus(struct device *, struct cfdata *, void *); static int cgthreematch_obio(struct device *, struct cfdata *, void *); static void cgthreeattach_sbus(struct device *, struct device *, void *); static void cgthreeattach_obio(struct device *, struct device *, void *); static void cgthreeunblank(struct device *); static void cgthreeattach __P((struct cgthree_softc *, char *, int, int)); /* cdevsw prototypes */ cdev_decl(cgthree); struct cfattach cgthree_sbus_ca = { sizeof(struct cgthree_softc), cgthreematch_sbus, cgthreeattach_sbus }; struct cfattach cgthree_obio_ca = { sizeof(struct cgthree_softc), cgthreematch_obio, cgthreeattach_obio }; extern struct cfdriver cgthree_cd; /* frame buffer generic driver */ static struct fbdriver cgthreefbdriver = { cgthreeunblank, cgthreeopen, cgthreeclose, cgthreeioctl, cgthreepoll, cgthreemmap }; extern int fbnode; extern struct tty *fbconstty; static void cgthreeloadcmap __P((struct cgthree_softc *, int, int)); static void cgthree_set_video __P((struct cgthree_softc *, int)); static int cgthree_get_video __P((struct cgthree_softc *)); /* Video control parameters */ struct cg3_videoctrl { unsigned char sense; /* Monitor sense value */ unsigned char vctrl[12]; } cg3_videoctrl[] = { /* Missing entries: sense 0x10, 0x30, 0x50 */ { 0x40, /* this happens to be my 19'' 1152x900 gray-scale monitor */ {0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1} }, { 0x00, /* default? must be last */ {0xbb, 0x2b, 0x3, 0xb, 0xb3, 0x3, 0xaf, 0x2b, 0x2, 0xa, 0xff, 0x1} } }; /* * Match a cgthree. */ int cgthreematch_sbus(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { struct sbus_attach_args *sa = aux; return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); } int cgthreematch_obio(parent, cf, aux) struct device *parent; struct cfdata *cf; void *aux; { union obio_attach_args *uoba = aux; struct obio4_attach_args *oba; if (uoba->uoba_isobio4 == 0) return (strcmp(cf->cf_driver->cd_name, uoba->uoba_sbus.sa_name) == 0); oba = &uoba->uoba_oba4; return (bus_space_probe(oba->oba_bustag, 0, oba->oba_paddr, 4, /* probe size */ 0, /* offset */ 0, /* flags */ NULL, NULL)); } /* * Attach a display. We need to notice if it is the console, too. */ void cgthreeattach_sbus(parent, self, args) struct device *parent, *self; void *args; { struct cgthree_softc *sc = (struct cgthree_softc *)self; struct sbus_attach_args *sa = args; struct fbdevice *fb = &sc->sc_fb; int node = sa->sa_node; int isconsole; char *name; bus_space_handle_t bh; /* Remember cookies for cgthree_mmap() */ sc->sc_bustag = sa->sa_bustag; sc->sc_btype = (bus_type_t)sa->sa_slot; sc->sc_paddr = (bus_addr_t)sa->sa_offset; fb->fb_driver = &cgthreefbdriver; fb->fb_device = &sc->sc_dev; fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK; fb->fb_type.fb_type = FBTYPE_SUN3COLOR; fb->fb_type.fb_depth = 8; fb_setsize_obp(fb, fb->fb_type.fb_depth, 1152, 900, node); /* * When the ROM has mapped in a cgthree display, the address * maps only the video RAM, so in any case we have to map the * registers ourselves. We only need the video RAM if we are * going to print characters via rconsole. */ if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset + CG3REG_REG, sizeof(struct fbcontrol), BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("%s: cannot map control registers\n", self->dv_xname); return; } sc->sc_fbc = (struct fbcontrol *)bh; isconsole = node == fbnode && fbconstty != NULL; name = getpropstring(node, "model"); if (sa->sa_npromvaddrs != 0) fb->fb_pixels = (caddr_t)sa->sa_promvaddrs[0]; if (isconsole && fb->fb_pixels == NULL) { int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset + CG3REG_MEM, ramsize, BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("%s: cannot map pixels\n", self->dv_xname); return; } fb->fb_pixels = (char *)bh; } sbus_establish(&sc->sc_sd, &sc->sc_dev); cgthreeattach(sc, name, isconsole, node == fbnode); } void cgthreeattach_obio(parent, self, aux) struct device *parent, *self; void *aux; { struct cgthree_softc *sc = (struct cgthree_softc *)self; union obio_attach_args *uoba = aux; struct obio4_attach_args *oba; struct fbdevice *fb = &sc->sc_fb; int isconsole; char *name; bus_space_handle_t bh; if (uoba->uoba_isobio4 == 0) { cgthreeattach_sbus(parent, self, aux); return; } oba = &uoba->uoba_oba4; /* Remember cookies for cgthree_mmap() */ sc->sc_bustag = oba->oba_bustag; sc->sc_btype = (bus_type_t)0; sc->sc_paddr = (bus_addr_t)oba->oba_paddr; fb->fb_driver = &cgthreefbdriver; fb->fb_device = &sc->sc_dev; fb->fb_flags = sc->sc_dev.dv_cfdata->cf_flags & FB_USERMASK; fb->fb_type.fb_type = FBTYPE_SUN3COLOR; fb->fb_type.fb_depth = 8; fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); if (obio_bus_map(oba->oba_bustag, oba->oba_paddr, CG3REG_REG, sizeof(struct fbcontrol), BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("%s: cannot map control registers\n", self->dv_xname); return; } sc->sc_fbc = (struct fbcontrol *)bh; isconsole = fbconstty != NULL; name = "cgthree"; if (isconsole) { int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; if (obio_bus_map(oba->oba_bustag, oba->oba_paddr, CG3REG_MEM, ramsize, BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("%s: cannot map pixels\n", self->dv_xname); return; } sc->sc_fb.fb_pixels = (char *)bh; } cgthreeattach(sc, name, isconsole, 1); } void cgthreeattach(sc, name, isconsole, isfb) struct cgthree_softc *sc; char *name; int isconsole; int isfb; { int i; struct fbdevice *fb = &sc->sc_fb; volatile struct bt_regs *bt; fb->fb_type.fb_size = fb->fb_type.fb_height * fb->fb_linebytes; printf(": %s, %d x %d", name, fb->fb_type.fb_width, fb->fb_type.fb_height); /* Transfer video magic to board, if it's not running */ if ((sc->sc_fbc->fbc_ctrl & FBC_TIMING) == 0) for (i = 0; i < sizeof(cg3_videoctrl)/sizeof(cg3_videoctrl[0]); i++) { volatile struct fbcontrol *fbc = sc->sc_fbc; if ((fbc->fbc_status & FBS_MSENSE) == cg3_videoctrl[i].sense) { int j; printf(" setting video ctrl"); for (j = 0; j < 12; j++) fbc->fbc_vcontrol[j] = cg3_videoctrl[i].vctrl[j]; fbc->fbc_ctrl |= FBC_TIMING; break; } } /* grab initial (current) color map */ fb->fb_type.fb_cmsize = 256; bt = &sc->sc_fbc->fbc_dac; bt->bt_addr = 0; for (i = 0; i < 256 * 3 / 4; i++) sc->sc_cmap.cm_chip[i] = bt->bt_cmap; /* make sure we are not blanked */ cgthree_set_video(sc, 1); BT_INIT(bt, 0); if (isconsole) { printf(" (console)\n"); #ifdef RASTERCONSOLE fbrcons_init(fb); #endif } else printf("\n"); if (isfb) fb_attach(fb, isconsole); } int cgthreeopen(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { int unit = minor(dev); if (unit >= cgthree_cd.cd_ndevs || cgthree_cd.cd_devs[unit] == NULL) return (ENXIO); return (0); } int cgthreeclose(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { return (0); } int cgthreeioctl(dev, cmd, data, flags, p) dev_t dev; u_long cmd; caddr_t data; int flags; struct proc *p; { struct cgthree_softc *sc = cgthree_cd.cd_devs[minor(dev)]; struct fbgattr *fba; int error; switch (cmd) { case FBIOGTYPE: *(struct fbtype *)data = sc->sc_fb.fb_type; break; case FBIOGATTR: fba = (struct fbgattr *)data; fba->real_type = sc->sc_fb.fb_type.fb_type; fba->owner = 0; /* XXX ??? */ fba->fbtype = sc->sc_fb.fb_type; fba->sattr.flags = 0; fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; fba->sattr.dev_specific[0] = -1; fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; fba->emu_types[1] = -1; break; case FBIOGETCMAP: return (bt_getcmap((struct fbcmap *)data, &sc->sc_cmap, 256)); case FBIOPUTCMAP: /* copy to software map */ #define p ((struct fbcmap *)data) error = bt_putcmap(p, &sc->sc_cmap, 256); if (error) return (error); /* now blast them into the chip */ /* XXX should use retrace interrupt */ cgthreeloadcmap(sc, p->index, p->count); #undef p break; case FBIOGVIDEO: *(int *)data = cgthree_get_video(sc); break; case FBIOSVIDEO: cgthree_set_video(sc, *(int *)data); break; default: return (ENOTTY); } return (0); } int cgthreepoll(dev, events, p) dev_t dev; int events; struct proc *p; { return (seltrue(dev, events, p)); } /* * Undo the effect of an FBIOSVIDEO that turns the video off. */ static void cgthreeunblank(dev) struct device *dev; { cgthree_set_video((struct cgthree_softc *)dev, 1); } static void cgthree_set_video(sc, enable) struct cgthree_softc *sc; int enable; { if (enable) sc->sc_fbc->fbc_ctrl |= FBC_VENAB; else sc->sc_fbc->fbc_ctrl &= ~FBC_VENAB; } static int cgthree_get_video(sc) struct cgthree_softc *sc; { return ((sc->sc_fbc->fbc_ctrl & FBC_VENAB) != 0); } /* * Load a subset of the current (new) colormap into the Brooktree DAC. */ static void cgthreeloadcmap(sc, start, ncolors) struct cgthree_softc *sc; int start, ncolors; { volatile struct bt_regs *bt; u_int *ip; int count; ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; bt = &sc->sc_fbc->fbc_dac; bt->bt_addr = BT_D4M4(start); while (--count >= 0) bt->bt_cmap = *ip++; } /* * Return the address that would map the given device at the given * offset, allowing for the given protection, or return -1 for error. * * The cg3 is mapped starting at 256KB, for pseudo-compatibility with * the cg4 (which had an overlay plane in the first 128K and an enable * plane in the next 128K). X11 uses only 256k+ region but tries to * map the whole thing, so we repeatedly map the first 256K to the * first page of the color screen. If someone tries to use the overlay * and enable regions, they will get a surprise.... * * As well, mapping at an offset of 0x04000000 causes the cg3 to be * mapped in flat mode without the cg4 emulation. */ int cgthreemmap(dev, off, prot) dev_t dev; int off, prot; { struct cgthree_softc *sc = cgthree_cd.cd_devs[minor(dev)]; bus_space_handle_t bh; #define START (128*1024 + 128*1024) #define NOOVERLAY (0x04000000) if (off & PGOFSET) panic("cgthreemmap"); if (off < 0) return (-1); if ((u_int)off >= NOOVERLAY) off -= NOOVERLAY; else if ((u_int)off >= START) off -= START; else off = 0; if ((unsigned)off >= sc->sc_fb.fb_type.fb_size) return (-1); if (bus_space_mmap(sc->sc_bustag, sc->sc_btype, sc->sc_paddr + CG3REG_MEM + off, BUS_SPACE_MAP_LINEAR, &bh)) return (-1); return ((int)bh); }