/* $NetBSD: bwtwo_sbus.c,v 1.30 2022/09/25 18:03:04 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_sbus.c,v 1.30 2022/09/25 18:03:04 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 <dev/sbus/sbusvar.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 void bwtwoattach_sbus (device_t, device_t, void *); static int bwtwomatch_sbus (device_t, cfdata_t, void *); CFATTACH_DECL_NEW(bwtwo_sbus, sizeof(struct bwtwo_softc), bwtwomatch_sbus, bwtwoattach_sbus, NULL, NULL); static int bwtwo_get_video (struct bwtwo_softc *); static void bwtwo_set_video (struct bwtwo_softc *, int); /* * Match a bwtwo. */ static int bwtwomatch_sbus(device_t parent, cfdata_t cf, void *aux) { struct sbus_attach_args *sa = aux; if (strcmp(cf->cf_name, sa->sa_name) == 0) return 100; /* beat genfb(4) */ return 0; } /* * Attach a display. We need to notice if it is the console, too. */ void bwtwoattach_sbus(device_t parent, device_t self, void *args) { struct bwtwo_softc *sc = device_private(self); struct sbus_attach_args *sa = args; struct fbdevice *fb = &sc->sc_fb; bus_space_handle_t bh; int isconsole, node; const char *name; sc->sc_dev = self; node = sa->sa_node; /* Remember cookies for bwtwo_mmap() */ sc->sc_bustag = sa->sa_bustag; sc->sc_paddr = sbus_bus_addr(sa->sa_bustag, sa->sa_slot, sa->sa_offset); fb->fb_flags = device_cfdata(self)->cf_flags; fb->fb_type.fb_depth = 1; fb_setsize_obp(fb, fb->fb_type.fb_depth, 1152, 900, node); /* * When the ROM has mapped in a bwtwo display, the address * maps only the video RAM, hence we always map the control * 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 + BWREG_REG, sizeof(struct fbcontrol), BUS_SPACE_MAP_LINEAR, &bh) != 0) { aprint_error_dev(self, "cannot map control registers\n"); return; } sc->sc_reg = (struct fbcontrol *)bus_space_vaddr(sa->sa_bustag, bh); fb->fb_pfour = NULL; sc->sc_pixeloffset = BWREG_MEM; isconsole = fb_is_console(node); name = prom_getpropstring(node, "model"); /* Assume `bwtwo at sbus' only happens at sun4c's */ sc->sc_get_video = bwtwo_get_video; sc->sc_set_video = bwtwo_set_video; if (sa->sa_npromvaddrs != 0) sc->sc_fb.fb_pixels = (void *)(u_long)sa->sa_promvaddrs[0]; if (isconsole && sc->sc_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 + sc->sc_pixeloffset, ramsize, BUS_SPACE_MAP_LINEAR, &bh) != 0) { aprint_error_dev(self, "cannot map pixels\n"); return; } sc->sc_fb.fb_pixels = (char *)bus_space_vaddr(sa->sa_bustag, bh); } bwtwoattach(sc, name, isconsole); } static void bwtwo_set_video(struct bwtwo_softc *sc, int enable) { if (enable) /* * If the we're the console the PROM will have taken care * of the FBC_TIMING bit and video control parameters. We * simply turn on FBC_TIMING; in case other video parameters * are necessary, here is a set read from an ELC: * [0xbb,0x2b,0x4,0x14,0xae,0x3,0xa8,0x24,0x1,0x5,0xff,0x1] */ sc->sc_reg->fbc_ctrl |= FBC_VENAB | FBC_TIMING; else sc->sc_reg->fbc_ctrl &= ~FBC_VENAB; } static int bwtwo_get_video(struct bwtwo_softc *sc) { return ((sc->sc_reg->fbc_ctrl & FBC_VENAB) != 0); }
