/* $NetBSD: cgthree.c,v 1.36 2022/09/25 21:30:29 thorpej 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. * * 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. */ /* * color display (cgthree) driver. * * Does not handle interrupts, even though they can occur. * * XXX should defer colormap updates to vertical retrace interrupts */ #include __KERNEL_RCSID(0, "$NetBSD: cgthree.c,v 1.36 2022/09/25 21:30:29 thorpej Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NWSDISPLAY > 0 #include #include #include #include "opt_wsemul.h" #endif #include "ioconf.h" static void cgthreeunblank(device_t); static void cgthreeloadcmap(struct cgthree_softc *, int, int); static void cgthree_set_video(struct cgthree_softc *, int); static int cgthree_get_video(struct cgthree_softc *); dev_type_open(cgthreeopen); dev_type_ioctl(cgthreeioctl); dev_type_mmap(cgthreemmap); const struct cdevsw cgthree_cdevsw = { .d_open = cgthreeopen, .d_close = nullclose, .d_read = noread, .d_write = nowrite, .d_ioctl = cgthreeioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = cgthreemmap, .d_kqfilter = nokqfilter, .d_discard = nodiscard, .d_flag = D_OTHER }; /* frame buffer generic driver */ static struct fbdriver cgthreefbdriver = { cgthreeunblank, cgthreeopen, nullclose, cgthreeioctl, nopoll, cgthreemmap, nokqfilter }; /* 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} } }; static void cg3_setup_palette(struct cgthree_softc *); struct wsscreen_descr cgthree_defaultscreen = { "std", 0, 0, /* will be filled in -- XXX shouldn't, it's global */ NULL, /* textops */ 8, 16, /* font width/height */ WSSCREEN_WSCOLORS, /* capabilities */ NULL /* modecookie */ }; static int cgthree_ioctl(void *, void *, u_long, void *, int, struct lwp *); static paddr_t cgthree_mmap(void *, void *, off_t, int); static void cgthree_init_screen(void *, struct vcons_screen *, int, long *); int cgthree_putcmap(struct cgthree_softc *, struct wsdisplay_cmap *); int cgthree_getcmap(struct cgthree_softc *, struct wsdisplay_cmap *); struct wsdisplay_accessops cgthree_accessops = { cgthree_ioctl, cgthree_mmap, NULL, /* alloc_screen */ NULL, /* free_screen */ NULL, /* show_screen */ NULL, /* load_font */ NULL, /* pollc */ NULL /* scroll */ }; const struct wsscreen_descr *_cgthree_scrlist[] = { &cgthree_defaultscreen }; struct wsscreen_list cgthree_screenlist = { sizeof(_cgthree_scrlist) / sizeof(struct wsscreen_descr *), _cgthree_scrlist }; extern const u_char rasops_cmap[768]; static struct vcons_screen cg3_console_screen; void cgthreeattach(struct cgthree_softc *sc, const char *name, int isconsole) { int i; struct fbdevice *fb = &sc->sc_fb; struct wsemuldisplaydev_attach_args aa; struct rasops_info *ri = &cg3_console_screen.scr_ri; unsigned long defattr; volatile struct fbcontrol *fbc = sc->sc_fbc; volatile struct bt_regs *bt = &fbc->fbc_dac; fb->fb_driver = &cgthreefbdriver; fb->fb_type.fb_cmsize = 256; 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 ((fbc->fbc_ctrl & FBC_TIMING) == 0) { int sense = (fbc->fbc_status & FBS_MSENSE); /* Search table for video timings fitting this monitor */ for (i = 0; i < sizeof(cg3_videoctrl)/sizeof(cg3_videoctrl[0]); i++) { int j; if (sense != cg3_videoctrl[i].sense) continue; 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; } } /* make sure we are not blanked */ cgthree_set_video(sc, 1); BT_INIT(bt, 0); if (isconsole) { printf(" (console)\n"); } else printf("\n"); fb_attach(fb, isconsole); sc->sc_width = fb->fb_type.fb_width; sc->sc_stride = fb->fb_type.fb_width; sc->sc_height = fb->fb_type.fb_height; /* setup rasops and so on for wsdisplay */ sc->sc_mode = WSDISPLAYIO_MODE_EMUL; vcons_init(&sc->vd, sc, &cgthree_defaultscreen, &cgthree_accessops); sc->vd.init_screen = cgthree_init_screen; if(isconsole) { /* we mess with cg3_console_screen only once */ vcons_init_screen(&sc->vd, &cg3_console_screen, 1, &defattr); memset(sc->sc_fb.fb_pixels, (defattr >> 16) & 0xff, sc->sc_stride * sc->sc_height); cg3_console_screen.scr_flags |= VCONS_SCREEN_IS_STATIC; cgthree_defaultscreen.textops = &ri->ri_ops; cgthree_defaultscreen.capabilities = ri->ri_caps; cgthree_defaultscreen.nrows = ri->ri_rows; cgthree_defaultscreen.ncols = ri->ri_cols; sc->vd.active = &cg3_console_screen; wsdisplay_cnattach(&cgthree_defaultscreen, ri, 0, 0, defattr); vcons_replay_msgbuf(&cg3_console_screen); } else { /* * we're not the console so we just clear the screen and don't * set up any sort of text display */ } /* Initialize the default color map. */ cg3_setup_palette(sc); aa.scrdata = &cgthree_screenlist; aa.console = isconsole; aa.accessops = &cgthree_accessops; aa.accesscookie = &sc->vd; config_found(sc->sc_dev, &aa, wsemuldisplaydevprint, CFARGS_NONE); } int cgthreeopen(dev_t dev, int flags, int mode, struct lwp *l) { int unit = minor(dev); if (device_lookup(&cgthree_cd, unit) == NULL) return (ENXIO); return (0); } int cgthreeioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) { struct cgthree_softc *sc = device_lookup_private(&cgthree_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 */ 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); } /* * Undo the effect of an FBIOSVIDEO that turns the video off. */ static void cgthreeunblank(device_t self) { struct cgthree_softc *sc = device_private(self); cgthree_set_video(sc, 1); } static void cgthree_set_video(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(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(struct cgthree_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++; } /* * 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. */ paddr_t cgthreemmap(dev_t dev, off_t off, int prot) { struct cgthree_softc *sc = device_lookup_private(&cgthree_cd, minor(dev)); #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 (off >= sc->sc_fb.fb_type.fb_size) return (-1); return (bus_space_mmap(sc->sc_bustag, sc->sc_paddr, CG3REG_MEM + off, prot, BUS_SPACE_MAP_LINEAR)); } static void cg3_setup_palette(struct cgthree_softc *sc) { int i, j; j = 0; for (i = 0; i < 256; i++) { sc->sc_cmap.cm_map[i][0] = rasops_cmap[j]; j++; sc->sc_cmap.cm_map[i][1] = rasops_cmap[j]; j++; sc->sc_cmap.cm_map[i][2] = rasops_cmap[j]; j++; } cgthreeloadcmap(sc, 0, 256); } int cgthree_ioctl(void *v, void *vs, u_long cmd, void *data, int flag, struct lwp *l) { /* we'll probably need to add more stuff here */ struct vcons_data *vd = v; struct cgthree_softc *sc = vd->cookie; struct wsdisplay_fbinfo *wdf; struct vcons_screen *ms = sc->vd.active; struct rasops_info *ri = &ms->scr_ri; switch (cmd) { case WSDISPLAYIO_GTYPE: *(u_int *)data = WSDISPLAY_TYPE_SUNTCX; return 0; case WSDISPLAYIO_GINFO: wdf = (void *)data; wdf->height = ri->ri_height; wdf->width = ri->ri_width; wdf->depth = 8; wdf->cmsize = 256; return 0; case WSDISPLAYIO_GETCMAP: return cgthree_getcmap(sc, (struct wsdisplay_cmap *)data); case WSDISPLAYIO_PUTCMAP: return cgthree_putcmap(sc, (struct wsdisplay_cmap *)data); case WSDISPLAYIO_SMODE: { int new_mode = *(int*)data; if (new_mode != sc->sc_mode) { sc->sc_mode = new_mode; if(new_mode == WSDISPLAYIO_MODE_EMUL) { cg3_setup_palette(sc); vcons_redraw_screen(ms); } } } return 0; case WSDISPLAYIO_GET_FBINFO: { struct wsdisplayio_fbinfo *fbi = data; return wsdisplayio_get_fbinfo(&ms->scr_ri, fbi); } } return EPASSTHROUGH; } paddr_t cgthree_mmap(void *v, void *vs, off_t offset, int prot) { struct vcons_data *vd = v; struct cgthree_softc *sc = vd->cookie; if (offset < 0) return -1; if (offset >= sc->sc_fb.fb_type.fb_size) return -1; return bus_space_mmap(sc->sc_bustag, sc->sc_paddr, CG3REG_MEM + offset, prot, BUS_SPACE_MAP_LINEAR); } int cgthree_putcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm) { u_int index = cm->index; u_int count = cm->count; int error,i; if (index >= 256 || count > 256 || index + count > 256) return EINVAL; for (i = 0; i < count; i++) { error = copyin(&cm->red[i], &sc->sc_cmap.cm_map[index + i][0], 1); if (error) return error; error = copyin(&cm->green[i], &sc->sc_cmap.cm_map[index + i][1], 1); if (error) return error; error = copyin(&cm->blue[i], &sc->sc_cmap.cm_map[index + i][2], 1); if (error) return error; } cgthreeloadcmap(sc, index, count); return 0; } int cgthree_getcmap(struct cgthree_softc *sc, struct wsdisplay_cmap *cm) { u_int index = cm->index; u_int count = cm->count; int error,i; if (index >= 256 || count > 256 || index + count > 256) return EINVAL; for (i = 0; i < count; i++) { error = copyout(&sc->sc_cmap.cm_map[index + i][0], &cm->red[i], 1); if (error) return error; error = copyout(&sc->sc_cmap.cm_map[index + i][1], &cm->green[i], 1); if (error) return error; error = copyout(&sc->sc_cmap.cm_map[index + i][2], &cm->blue[i], 1); if (error) return error; } return 0; } void cgthree_init_screen(void *cookie, struct vcons_screen *scr, int existing, long *defattr) { struct cgthree_softc *sc = cookie; struct rasops_info *ri = &scr->scr_ri; scr->scr_flags |= VCONS_DONT_READ; ri->ri_depth = 8; ri->ri_width = sc->sc_width; ri->ri_height = sc->sc_height; ri->ri_stride = sc->sc_stride; ri->ri_flg = RI_CENTER; ri->ri_bits = sc->sc_fb.fb_pixels; rasops_init(ri, 0, 0); ri->ri_caps = WSSCREEN_WSCOLORS | WSSCREEN_REVERSE; rasops_reconfig(ri, sc->sc_height / ri->ri_font->fontheight, sc->sc_width / ri->ri_font->fontwidth); ri->ri_hw = scr; }