/* $NetBSD: bwtwo_obio.c,v 1.18 2023/12/20 05:33:18 thorpej 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. * * @(#)bwtwo.c 8.1 (Berkeley) 6/11/93 */ /* * black&white display (bwtwo) driver. * * Does not handle interrupts, even though they can occur. * * P4 and overlay plane support by Jason R. Thorpe <thorpej@NetBSD.org>. * Overlay plane handling hints and ideas provided by Brad Spencer. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: bwtwo_obio.c,v 1.18 2023/12/20 05:33:18 thorpej Exp $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/device.h> #include <sys/ioctl.h> #include <sys/mman.h> #include <sys/tty.h> #include <sys/conf.h> #include <machine/autoconf.h> #include <machine/eeprom.h> #include <machine/ctlreg.h> #include <sparc/sparc/asm.h> #include <dev/sun/fbio.h> #include <dev/sun/fbvar.h> #include <dev/sun/btreg.h> #include <dev/sun/bwtworeg.h> #include <dev/sun/bwtwovar.h> #include <dev/sun/pfourreg.h> /* autoconfiguration driver */ static int bwtwomatch_obio(device_t, cfdata_t, void *); static void bwtwoattach_obio(device_t, device_t, void *); CFATTACH_DECL_NEW(bwtwo_obio, sizeof(struct bwtwo_softc), bwtwomatch_obio, bwtwoattach_obio, NULL, NULL); static int bwtwo_get_video_sun4(struct bwtwo_softc *); static void bwtwo_set_video_sun4(struct bwtwo_softc *, int); extern int fbnode; static int bwtwomatch_obio(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 */ bwtwo_pfour_probe, cf)); } static void bwtwoattach_obio(device_t parent, device_t self, void *aux) { struct bwtwo_softc *sc = device_private(self); union obio_attach_args *uoba = aux; struct obio4_attach_args *oba; struct fbdevice *fb = &sc->sc_fb; struct eeprom *eep = (struct eeprom *)eeprom_va; bus_space_handle_t bh; int constype, isconsole; const char *name; sc->sc_dev = self; oba = &uoba->uoba_oba4; /* Remember cookies for bwtwo_mmap() */ sc->sc_bustag = oba->oba_bustag; sc->sc_paddr = (bus_addr_t)oba->oba_paddr; fb->fb_flags = device_cfdata(self)->cf_flags; fb->fb_type.fb_depth = 1; fb_setsize_eeprom(fb, fb->fb_type.fb_depth, 1152, 900); constype = (fb->fb_flags & FB_PFOUR) ? EE_CONS_P4OPT : EE_CONS_BW; if (eep == NULL || eep->eeConsole == constype) isconsole = fb_is_console(0); else isconsole = 0; if (fb->fb_flags & FB_PFOUR) { /* * Map the pfour control register. * Set pixel offset to appropriate overlay plane. */ name = "bwtwo/p4"; 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 = (uint32_t *)bh; sc->sc_reg = NULL; /* * Notice if this is an overlay plane on a color * framebuffer. Note that PFOUR_COLOR_OFF_OVERLAY * is the same as PFOUR_BW_OFF, but we use the * different names anyway. */ switch (PFOUR_ID(*fb->fb_pfour)) { case PFOUR_ID_COLOR8P1: sc->sc_ovtype = BWO_CGFOUR; sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; break; case PFOUR_ID_COLOR24: sc->sc_ovtype = BWO_CGEIGHT; sc->sc_pixeloffset = PFOUR_COLOR_OFF_OVERLAY; break; default: sc->sc_ovtype = BWO_NONE; sc->sc_pixeloffset = PFOUR_BW_OFF; break; } } else { /* A plain bwtwo */ if (bus_space_map(oba->oba_bustag, oba->oba_paddr + BWREG_REG, sizeof(struct fbcontrol), BUS_SPACE_MAP_LINEAR, &bh) != 0) { printf("%s: cannot map control registers\n", device_xname(self)); return; } sc->sc_reg = (struct fbcontrol *)bh; fb->fb_pfour = NULL; name = "bwtwo"; sc->sc_pixeloffset = BWREG_MEM; } sc->sc_get_video = bwtwo_get_video_sun4; sc->sc_set_video = bwtwo_set_video_sun4; if (isconsole) { int ramsize = fb->fb_type.fb_height * fb->fb_linebytes; if (bus_space_map(oba->oba_bustag, oba->oba_paddr + sc->sc_pixeloffset, ramsize, BUS_SPACE_MAP_LINEAR, &bh) != 0) { printf("%s: cannot map pixels\n", device_xname(self)); return; } sc->sc_fb.fb_pixels = (char *)bh; } bwtwoattach(sc, name, isconsole); } static void bwtwo_set_video_sun4(struct bwtwo_softc *sc, int enable) { if (sc->sc_fb.fb_flags & FB_PFOUR) { /* * This handles the overlay plane case, too. */ fb_pfour_set_video(&sc->sc_fb, enable); return; } if (enable) stba(AC_SYSENABLE, ASI_CONTROL, lduba(AC_SYSENABLE, ASI_CONTROL) | SYSEN_VIDEO); else stba(AC_SYSENABLE, ASI_CONTROL, lduba(AC_SYSENABLE, ASI_CONTROL) & ~SYSEN_VIDEO); return; } static int bwtwo_get_video_sun4(struct bwtwo_softc *sc) { if (sc->sc_fb.fb_flags & FB_PFOUR) { /* * This handles the overlay plane case, too. */ return (fb_pfour_get_video(&sc->sc_fb)); } else return ((lduba(AC_SYSENABLE, ASI_CONTROL) & SYSEN_VIDEO) != 0); }
