/* $NetBSD: cgeight.c,v 1.50 2014/10/18 08:33:26 snj Exp $ */ /*- * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * 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. * * 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. 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. * * from @(#)cgthree.c 8.2 (Berkeley) 10/30/93 */ /* * Copyright (c) 1995 Theo de Raadt. All rights reserved. * * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ /* * color display (cgeight) driver. * * Does not handle interrupts, even though they can occur. * * XXX should defer colormap updates to vertical retrace interrupts */ #include __KERNEL_RCSID(0, "$NetBSD: cgeight.c,v 1.50 2014/10/18 08:33:26 snj Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* per-display variables */ struct cgeight_softc { struct fbdevice sc_fb; /* frame buffer device */ bus_space_tag_t sc_bustag; bus_addr_t sc_paddr; /* phys address for device mmap() */ volatile struct fbcontrol *sc_fbc; /* Brooktree registers */ union bt_cmap sc_cmap; /* Brooktree color map */ }; /* autoconfiguration driver */ static void cgeightattach(device_t, device_t, void *); static int cgeightmatch(device_t, cfdata_t, void *); #if defined(SUN4) static void cgeightunblank(device_t); #endif static int cg8_pfour_probe(void *, void *); CFATTACH_DECL_NEW(cgeight, sizeof(struct cgeight_softc), cgeightmatch, cgeightattach, NULL, NULL); extern struct cfdriver cgeight_cd; dev_type_open(cgeightopen); dev_type_ioctl(cgeightioctl); dev_type_mmap(cgeightmmap); const struct cdevsw cgeight_cdevsw = { .d_open = cgeightopen, .d_close = nullclose, .d_read = noread, .d_write = nowrite, .d_ioctl = cgeightioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = cgeightmmap, .d_kqfilter = nokqfilter, .d_discard = nodiscard, .d_flag = 0 }; #if defined(SUN4) /* frame buffer generic driver */ static struct fbdriver cgeightfbdriver = { cgeightunblank, cgeightopen, nullclose, cgeightioctl, nopoll, cgeightmmap, nokqfilter }; static void cgeightloadcmap(struct cgeight_softc *, int, int); static int cgeight_get_video(struct cgeight_softc *); static void cgeight_set_video(struct cgeight_softc *, int); #endif /* * Match a cgeight. */ static int cgeightmatch(device_t parent, cfdata_t cf, void *aux) { union obio_attach_args *uoba = aux; struct obio4_attach_args *oba; if (uoba->uoba_isobio4 == 0) return (0); oba = &uoba->uoba_oba4; return (bus_space_probe(oba->oba_bustag, oba->oba_paddr, 4, /* probe size */ 0, /* offset */ 0, /* flags */ cg8_pfour_probe, NULL)); } static int cg8_pfour_probe(void *vaddr, void *arg) { return (fb_pfour_id(vaddr) == PFOUR_ID_COLOR24); } /* * Attach a display. We need to notice if it is the console, too. */ static void cgeightattach(device_t parent, device_t self, void *aux) { #if defined(SUN4) union obio_attach_args *uoba = aux; struct obio4_attach_args *oba = &uoba->uoba_oba4; struct cgeight_softc *sc = device_private(self); struct fbdevice *fb = &sc->sc_fb; bus_space_handle_t bh; volatile struct bt_regs *bt; int ramsize, i, isconsole; sc->sc_bustag = oba->oba_bustag; sc->sc_paddr = (bus_addr_t)oba->oba_paddr; /* Map the pfour register. */ if (bus_space_map(oba->oba_bustag, oba->oba_paddr, sizeof(uint32_t), BUS_SPACE_MAP_LINEAR, &bh) != 0) { printf("%s: cannot map pfour register\n", device_xname(self)); return; } fb->fb_pfour = (volatile uint32_t *)bh; fb->fb_driver = &cgeightfbdriver; fb->fb_device = self; fb->fb_type.fb_type = FBTYPE_MEMCOLOR; fb->fb_flags = device_cfdata(self)->cf_flags & FB_USERMASK; fb->fb_flags |= FB_PFOUR; ramsize = PFOUR_COLOR_OFF_END - PFOUR_COLOR_OFF_OVERLAY; fb->fb_type.fb_depth = 24; fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); sc->sc_fb.fb_type.fb_cmsize = 256; sc->sc_fb.fb_type.fb_size = ramsize; printf(": cgeight/p4, %d x %d", fb->fb_type.fb_width, fb->fb_type.fb_height); isconsole = 0; if (CPU_ISSUN4) { struct eeprom *eep = (struct eeprom *)eeprom_va; /* * Assume this is the console if there's no eeprom info * to be found. */ if (eep == NULL || eep->eeConsole == EE_CONS_P4OPT) isconsole = fb_is_console(0); } #if 0 /* * We don't do any of the console handling here. Instead, * we let the bwtwo driver pick up the overlay plane and * use it instead. Rconsole should have better performance * with the 1-bit depth. * -- Jason R. Thorpe */ /* * When the ROM has mapped in a cgfour 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 (isconsole) { /* XXX this is kind of a waste */ fb->fb_pixels = mapiodev(ca->ca_ra.ra_reg, PFOUR_COLOR_OFF_OVERLAY, ramsize); } #endif /* Map the Brooktree. */ if (bus_space_map(oba->oba_bustag, oba->oba_paddr + PFOUR_COLOR_OFF_CMAP, sizeof(struct fbcontrol), BUS_SPACE_MAP_LINEAR, &bh) != 0) { printf("%s: cannot map control registers\n", device_xname(self)); return; } sc->sc_fbc = (volatile struct fbcontrol *)bh; #if 0 /* XXX thorpej ??? */ /* tell the enable plane to look at the mono image */ memset(ca->ca_ra.ra_vaddr, 0xff, sc->sc_fb.fb_type.fb_width * sc->sc_fb.fb_type.fb_height / 8); #endif /* grab initial (current) color map */ 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; BT_INIT(bt, 0); #if 0 /* see above */ if (isconsole) { printf(" (console)\n"); #if defined(RASTERCONSOLE) && 0 /* XXX been told it doesn't work well. */ fbrcons_init(fb); #endif } else #endif /* 0 */ printf("\n"); /* * Even though we're not using rconsole, we'd still like * to notice if we're the console framebuffer. */ fb_attach(&sc->sc_fb, isconsole); #endif } int cgeightopen(dev_t dev, int flags, int mode, struct lwp *l) { int unit = minor(dev); if (device_lookup(&cgeight_cd, unit) == NULL) return (ENXIO); return (0); } int cgeightioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) { #if defined(SUN4) struct cgeight_softc *sc = device_lookup_private(&cgeight_cd, 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: #define p ((struct fbcmap *)data) return (bt_getcmap(p, &sc->sc_cmap, 256, 1)); case FBIOPUTCMAP: /* copy to software map */ error = bt_putcmap(p, &sc->sc_cmap, 256, 1); if (error) return (error); /* now blast them into the chip */ /* XXX should use retrace interrupt */ cgeightloadcmap(sc, p->index, p->count); #undef p break; case FBIOGVIDEO: *(int *)data = cgeight_get_video(sc); break; case FBIOSVIDEO: cgeight_set_video(sc, *(int *)data); break; default: return (ENOTTY); } #endif /* SUN4 */ return (0); } /* * Return the address that would map the given device at the given * offset, allowing for the given protection, or return -1 for error. * * The cg8 maps its overlay plane at 0 for 128K, followed by the * enable plane for 128K, followed by the colour for as long as it * goes. Starting at 8MB, it maps the ramdac for PAGE_SIZE, then the p4 * register for PAGE_SIZE, then the bootrom for 0x40000. */ paddr_t cgeightmmap(dev_t dev, off_t off, int prot) { struct cgeight_softc *sc = device_lookup_private(&cgeight_cd, minor(dev)); off_t poff; #define START_ENABLE (128*1024) #define START_COLOR ((128*1024) + (128*1024)) #define COLOR_SIZE (sc->sc_fb.fb_type.fb_width * \ sc->sc_fb.fb_type.fb_height * 3) #define END_COLOR (START_COLOR + COLOR_SIZE) #define START_SPECIAL 0x800000 #define PROMSIZE 0x40000 #define NOOVERLAY (0x04000000) if (off & PGOFSET) panic("cgeightmap"); if (off < 0) return (-1); else if ((u_int)off >= NOOVERLAY) { off -= NOOVERLAY; /* * X11 maps a huge chunk of the frame buffer; far more than * there really is. We compensate by double-mapping the * first page for as many other pages as it wants */ while ((u_int)off >= COLOR_SIZE) off -= COLOR_SIZE; /* XXX thorpej ??? */ poff = off + PFOUR_COLOR_OFF_COLOR; } else if ((u_int)off < START_ENABLE) { /* * in overlay plane */ poff = PFOUR_COLOR_OFF_OVERLAY + off; } else if ((u_int)off < START_COLOR) { /* * in enable plane */ poff = (off - START_ENABLE) + PFOUR_COLOR_OFF_ENABLE; } else if ((u_int)off < sc->sc_fb.fb_type.fb_size) { /* * in colour plane */ poff = (off - START_COLOR) + PFOUR_COLOR_OFF_COLOR; } else if ((u_int)off < START_SPECIAL) { /* * hole */ poff = 0; /* XXX */ } else if ((u_int)off == START_SPECIAL) { /* * colour map (Brooktree) */ poff = PFOUR_COLOR_OFF_CMAP; } else if ((u_int)off == START_SPECIAL + PAGE_SIZE) { /* * p4 register */ poff = 0; } else if ((u_int)off > (START_SPECIAL + (PAGE_SIZE * 2)) && (u_int) off < (START_SPECIAL + (PAGE_SIZE * 2) + PROMSIZE)) { /* * rom */ poff = 0x8000 + (off - (START_SPECIAL + (PAGE_SIZE * 2))); } else return (-1); return (bus_space_mmap(sc->sc_bustag, sc->sc_paddr, poff, prot, BUS_SPACE_MAP_LINEAR)); } #if defined(SUN4) /* * Undo the effect of an FBIOSVIDEO that turns the video off. */ static void cgeightunblank(device_t dev) { cgeight_set_video(device_private(dev), 1); } static int cgeight_get_video(struct cgeight_softc *sc) { return (fb_pfour_get_video(&sc->sc_fb)); } static void cgeight_set_video(struct cgeight_softc *sc, int enable) { fb_pfour_set_video(&sc->sc_fb, enable); } /* * Load a subset of the current (new) colormap into the Brooktree DAC. */ static void cgeightloadcmap(struct cgeight_softc *sc, int start, int 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++; } #endif /* SUN4 */