/* $OpenBSD: vigra.c,v 1.6 2003/04/06 16:59:33 miod Exp $ */ /* * Copyright (c) 2002 Miodrag Vallat. 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. * */ /* * Driver for the Vigra VS series of SBus framebuffers. * * The VS10 and VS12 models are supported. VS10-EK should also work. * * The VS11 uses an INMOS G335 dac instead of the G300 found in VS10/12, and * should be relatively easy to support once the dac diffs are sorted out. * * The monochrome VS14, 16 grays VS15, and color VS18 are not supported. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * INMOS G300 registers (very incomplete...) */ struct g300regs { u_int32_t unknown00; u_int32_t unknown04; u_int32_t disable; u_int32_t unknown0c; u_int32_t status; #define G300S_INTR 0x0001 u_int32_t intr; u_int32_t unknown18; u_int32_t unknown1c; }; /* * SBUS register mappings */ #define VIGRA_REG_CMAP 1 #define VIGRA_REG_G300 2 #define VIGRA_REG_VRAM 3 #define VIGRA_NREG 4 union vigracmap { u_char cm_map[256][4]; /* 256 R/G/B entries plus pad */ u_int32_t cm_chip[256]; /* the way the chip gets loaded */ }; /* per-display variables */ struct vigra_softc { struct sunfb sc_sunfb; /* common base part */ struct sbusdev sc_sd; /* sbus device */ struct rom_reg sc_phys; /* phys address description */ volatile struct g300regs *sc_regs; /* ramdac registers */ volatile u_int32_t *sc_physcmap; /* ramdac palette */ union vigracmap sc_cmap; /* current colormap */ struct intrhand sc_ih; int sc_nscreens; }; struct wsscreen_descr vigra_stdscreen = { "std", }; const struct wsscreen_descr *vigra_scrlist[] = { &vigra_stdscreen, }; struct wsscreen_list vigra_screenlist = { sizeof(vigra_scrlist) / sizeof(struct wsscreen_descr *), vigra_scrlist }; int vigra_ioctl(void *, u_long, caddr_t, int, struct proc *); int vigra_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, int *, long *); void vigra_free_screen(void *, void *); int vigra_show_screen(void *, void *, int, void (*cb)(void *, int, int), void *); paddr_t vigra_mmap(void *, off_t, int); void vigra_setcolor(void *, u_int, u_int8_t, u_int8_t, u_int8_t); int vigra_getcmap(union vigracmap *, struct wsdisplay_cmap *); int vigra_putcmap(union vigracmap *, struct wsdisplay_cmap *); void vigra_loadcmap_immediate(struct vigra_softc *, int, int); static __inline__ void vigra_loadcmap_deferred(struct vigra_softc *, u_int, u_int); void vigra_burner(void *, u_int, u_int); int vigra_intr(void *); struct wsdisplay_accessops vigra_accessops = { vigra_ioctl, vigra_mmap, vigra_alloc_screen, vigra_free_screen, vigra_show_screen, NULL, /* load_font */ NULL, /* scrollback */ NULL, /* getchar */ vigra_burner, }; int vigramatch(struct device *, void *, void *); void vigraattach(struct device *, struct device *, void *); struct cfattach vigra_ca = { sizeof (struct vigra_softc), vigramatch, vigraattach }; struct cfdriver vigra_cd = { NULL, "vigra", DV_DULL }; /* * Match a vigra. */ int vigramatch(parent, vcf, aux) struct device *parent; void *vcf, *aux; { struct cfdata *cf = vcf; struct confargs *ca = aux; struct romaux *ra = &ca->ca_ra; /* * Mask out invalid flags from the user. */ cf->cf_flags &= FB_USERMASK; if (strcmp("vs10", ra->ra_name) && strcmp("vs12", ra->ra_name)) return (0); if (ca->ca_bustype != BUS_SBUS) return (0); return (1); } /* * Attach a display. */ void vigraattach(parent, self, args) struct device *parent, *self; void *args; { struct vigra_softc *sc = (struct vigra_softc *)self; struct confargs *ca = args; struct wsemuldisplaydev_attach_args waa; int node, row, isconsole = 0; char *nam; sc->sc_sunfb.sf_flags = self->dv_cfdata->cf_flags; node = ca->ca_ra.ra_node; nam = getpropstring(node, "model"); if (*nam == '\0') nam = (char *)ca->ca_ra.ra_name; printf(": %s", nam); isconsole = node == fbnode; if (ca->ca_ra.ra_nreg < VIGRA_NREG) { printf("\n%s: expected %d registers, got %d", self->dv_xname, VIGRA_NREG, ca->ca_ra.ra_nreg); return; } sc->sc_regs = mapiodev(&ca->ca_ra.ra_reg[VIGRA_REG_G300], 0, sizeof(*sc->sc_regs)); sc->sc_physcmap = mapiodev(&ca->ca_ra.ra_reg[VIGRA_REG_CMAP], 0, 256 * sizeof(u_int32_t)); sc->sc_phys = ca->ca_ra.ra_reg[VIGRA_REG_VRAM]; sc->sc_ih.ih_fun = vigra_intr; sc->sc_ih.ih_arg = sc; intr_establish(ca->ca_ra.ra_intr[0].int_pri, &sc->sc_ih, IPL_FB); /* enable video */ vigra_burner(sc, 1, 0); fb_setsize(&sc->sc_sunfb, 8, 1152, 900, node, ca->ca_bustype); sc->sc_sunfb.sf_ro.ri_bits = mapiodev(&ca->ca_ra.ra_reg[VIGRA_REG_VRAM], 0, round_page(sc->sc_sunfb.sf_fbsize)); sc->sc_sunfb.sf_ro.ri_hw = sc; printf(", %dx%d\n", sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height); /* * If the framebuffer width is under 1024x768, we will switch from the * PROM font to the more adequate 8x16 font here. * However, we need to adjust two things in this case: * - the display row should be overrided from the current PROM metrics, * to prevent us from overwriting the last few lines of text. * - if the 80x34 screen would make a large margin appear around it, * choose to clear the screen rather than keeping old prom output in * the margins. * XXX there should be a rasops "clear margins" feature */ fbwscons_init(&sc->sc_sunfb, isconsole && (sc->sc_sunfb.sf_width != 800)); fbwscons_setcolormap(&sc->sc_sunfb, vigra_setcolor); vigra_stdscreen.capabilities = sc->sc_sunfb.sf_ro.ri_caps; vigra_stdscreen.nrows = sc->sc_sunfb.sf_ro.ri_rows; vigra_stdscreen.ncols = sc->sc_sunfb.sf_ro.ri_cols; vigra_stdscreen.textops = &sc->sc_sunfb.sf_ro.ri_ops; if (isconsole) { switch (sc->sc_sunfb.sf_width) { case 640: row = vigra_stdscreen.nrows - 1; break; case 800: row = 0; /* screen has been cleared above */ break; default: row = -1; break; } fbwscons_console_init(&sc->sc_sunfb, &vigra_stdscreen, row, vigra_burner); } sbus_establish(&sc->sc_sd, &sc->sc_sunfb.sf_dev); waa.console = isconsole; waa.scrdata = &vigra_screenlist; waa.accessops = &vigra_accessops; waa.accesscookie = sc; config_found(self, &waa, wsemuldisplaydevprint); } int vigra_ioctl(v, cmd, data, flags, p) void *v; u_long cmd; caddr_t data; int flags; struct proc *p; { struct vigra_softc *sc = v; struct wsdisplay_cmap *cm; struct wsdisplay_fbinfo *wdf; int error; switch (cmd) { case WSDISPLAYIO_GTYPE: *(u_int *)data = WSDISPLAY_TYPE_UNKNOWN; break; case WSDISPLAYIO_GINFO: wdf = (struct wsdisplay_fbinfo *)data; wdf->height = sc->sc_sunfb.sf_height; wdf->width = sc->sc_sunfb.sf_width; wdf->depth = sc->sc_sunfb.sf_depth; wdf->cmsize = 256; break; case WSDISPLAYIO_LINEBYTES: *(u_int *)data = sc->sc_sunfb.sf_linebytes; break; case WSDISPLAYIO_GETCMAP: cm = (struct wsdisplay_cmap *)data; error = vigra_getcmap(&sc->sc_cmap, cm); if (error) return (error); break; case WSDISPLAYIO_PUTCMAP: cm = (struct wsdisplay_cmap *)data; error = vigra_putcmap(&sc->sc_cmap, cm); if (error) return (error); vigra_loadcmap_deferred(sc, cm->index, cm->count); break; case WSDISPLAYIO_SVIDEO: case WSDISPLAYIO_GVIDEO: case WSDISPLAYIO_GCURPOS: case WSDISPLAYIO_SCURPOS: case WSDISPLAYIO_GCURMAX: case WSDISPLAYIO_GCURSOR: case WSDISPLAYIO_SCURSOR: default: return (-1); /* not supported yet */ } return (0); } int vigra_alloc_screen(v, type, cookiep, curxp, curyp, attrp) void *v; const struct wsscreen_descr *type; void **cookiep; int *curxp, *curyp; long *attrp; { struct vigra_softc *sc = v; if (sc->sc_nscreens > 0) return (ENOMEM); *cookiep = &sc->sc_sunfb.sf_ro; *curyp = 0; *curxp = 0; sc->sc_sunfb.sf_ro.ri_ops.alloc_attr(&sc->sc_sunfb.sf_ro, WSCOL_BLACK, WSCOL_WHITE, WSATTR_WSCOLORS, attrp); sc->sc_nscreens++; return (0); } void vigra_free_screen(v, cookie) void *v; void *cookie; { struct vigra_softc *sc = v; sc->sc_nscreens--; } int vigra_show_screen(v, cookie, waitok, cb, cbarg) void *v; void *cookie; int waitok; void (*cb)(void *, int, int); void *cbarg; { 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. */ paddr_t vigra_mmap(v, offset, prot) void *v; off_t offset; int prot; { struct vigra_softc *sc = v; if (offset & PGOFSET) return (-1); if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize) { return (REG2PHYS(&sc->sc_phys, offset) | PMAP_NC); } return (-1); } void vigra_setcolor(v, index, r, g, b) void *v; u_int index; u_int8_t r, g, b; { struct vigra_softc *sc = v; sc->sc_cmap.cm_map[index][3] = r; sc->sc_cmap.cm_map[index][2] = g; sc->sc_cmap.cm_map[index][1] = b; sc->sc_cmap.cm_map[index][0] = 0; /* no alpha channel */ vigra_loadcmap_immediate(sc, index, 1); } int vigra_getcmap(cm, rcm) union vigracmap *cm; struct wsdisplay_cmap *rcm; { u_int index = rcm->index, count = rcm->count, i; int error; if (index >= 256 || count > 256 - index) return (EINVAL); for (i = 0; i < count; i++) { if ((error = copyout(&cm->cm_map[index + i][3], &rcm->red[i], 1)) != 0) return (error); if ((error = copyout(&cm->cm_map[index + i][2], &rcm->green[i], 1)) != 0) return (error); if ((error = copyout(&cm->cm_map[index + i][1], &rcm->blue[i], 1)) != 0) return (error); } return (0); } int vigra_putcmap(cm, rcm) union vigracmap *cm; struct wsdisplay_cmap *rcm; { u_int index = rcm->index, count = rcm->count, i; int error; if (index >= 256 || count > 256 - index) return (EINVAL); for (i = 0; i < count; i++) { if ((error = copyin(&rcm->red[i], &cm->cm_map[index + i][3], 1)) != 0) return (error); if ((error = copyin(&rcm->green[i], &cm->cm_map[index + i][2], 1)) != 0) return (error); if ((error = copyin(&rcm->blue[i], &cm->cm_map[index + i][1], 1)) != 0) return (error); cm->cm_map[index + i][0] = 0; /* no alpha channel */ } return (0); } void vigra_loadcmap_immediate(sc, start, ncolors) struct vigra_softc *sc; int start, ncolors; { u_int32_t *colp = &sc->sc_cmap.cm_chip[start]; volatile u_int32_t *lutp = &sc->sc_physcmap[start]; while (--ncolors >= 0) *lutp++ = *colp++; } static __inline__ void vigra_loadcmap_deferred(struct vigra_softc *sc, u_int start, u_int ncolors) { sc->sc_regs->intr = 1; } void vigra_burner(v, on, flags) void *v; u_int on, flags; { struct vigra_softc *sc = v; if (on) { sc->sc_regs->disable = 0; } else { sc->sc_regs->disable = 1; } } int vigra_intr(v) void *v; { struct vigra_softc *sc = v; if (sc->sc_regs->intr == 0 || !ISSET(sc->sc_regs->status, G300S_INTR)) { /* Not expecting an interrupt, it's not for us. */ return (0); } /* Acknowledge the interrupt and disable it. */ sc->sc_regs->intr = 0; vigra_loadcmap_immediate(sc, 0, 256); return (1); }