/* $OpenBSD: tcx.c,v 1.21 2004/11/29 22:07:37 miod Exp $ */ /* $NetBSD: tcx.c,v 1.8 1997/07/29 09:58:14 fair Exp $ */ /* * Copyright (c) 2002, 2003 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. * * * Copyright (c) 1996 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation 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 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 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. */ /* * color display (TCX) driver. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* for prom console hook */ /* per-display variables */ struct tcx_softc { struct sunfb sc_sunfb; /* common base part */ struct sbusdev sc_sd; /* sbus device */ struct rom_reg sc_phys[TCX_NREG]; /* phys addr of h/w */ volatile struct bt_regs *sc_bt; /* Brooktree registers */ volatile struct tcx_thc *sc_thc; /* THC registers */ volatile u_int8_t *sc_dfb8; /* 8 bit plane */ volatile u_int32_t *sc_dfb24; /* S24 24 bit plane */ volatile u_int32_t *sc_cplane; /* S24 control plane */ union bt_cmap sc_cmap; /* Brooktree color map */ struct intrhand sc_ih; int sc_nscreens; }; int tcx_ioctl(void *, u_long, caddr_t, int, struct proc *); int tcx_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, int *, long *); void tcx_free_screen(void *, void *); int tcx_show_screen(void *, void *, int, void (*cb)(void *, int, int), void *); paddr_t tcx_mmap(void *, off_t, int); void tcx_reset(struct tcx_softc *, int); void tcx_burner(void *, u_int, u_int); void tcx_setcolor(void *, u_int, u_int8_t, u_int8_t, u_int8_t); static __inline__ void tcx_loadcmap_deferred(struct tcx_softc *, u_int, u_int); int tcx_intr(void *); void tcx_prom(void *); struct wsdisplay_accessops tcx_accessops = { tcx_ioctl, tcx_mmap, tcx_alloc_screen, tcx_free_screen, tcx_show_screen, NULL, /* load_font */ NULL, /* scrollback */ NULL, /* getchar */ tcx_burner, }; int tcxmatch(struct device *, void *, void *); void tcxattach(struct device *, struct device *, void *); struct cfattach tcx_ca = { sizeof(struct tcx_softc), tcxmatch, tcxattach }; struct cfdriver tcx_cd = { NULL, "tcx", DV_DULL }; /* * There are three ways to access the framebuffer memory of the S24: * - 26 bits per pixel, in 32-bit words; the low-order 24 bits are blue, * green and red values, and the other two bits select the display modes, * per pixel. * - 24 bits per pixel, in 32-bit words; the high-order byte reads as zero, * and is ignored on writes (so the mode bits can not be altered). * - 8 bits per pixel, unpadded; writes to this space do not modify the * other 18 bits, which are hidden. * * The entry-level tcx found on the SPARCstation 4 can only provide the 8-bit * mode. */ #define TCX_CTL_8_MAPPED 0x00000000 /* 8 bits, uses colormap */ #define TCX_CTL_24_MAPPED 0x01000000 /* 24 bits, uses colormap */ #define TCX_CTL_24_LEVEL 0x03000000 /* 24 bits, true color */ #define TCX_CTL_PIXELMASK 0x00ffffff /* mask for index/level */ /* * Match a tcx. */ int tcxmatch(parent, vcf, aux) struct device *parent; void *vcf, *aux; { struct confargs *ca = aux; struct romaux *ra = &ca->ca_ra; if (strcmp(ra->ra_name, "SUNW,tcx") != 0) return (0); return (1); } /* * Attach a display. */ void tcxattach(parent, self, args) struct device *parent, *self; void *args; { struct tcx_softc *sc = (struct tcx_softc *)self; struct confargs *ca = args; int node = 0, i; volatile struct bt_regs *bt; int isconsole = 0; char *nam = NULL; node = ca->ca_ra.ra_node; nam = getpropstring(node, "model"); printf(": %s\n", nam); if (ca->ca_ra.ra_nreg < TCX_NREG) { printf("\n%s: expected %d registers, got %d\n", self->dv_xname, TCX_NREG, ca->ca_ra.ra_nreg); return; } /* Copy register address spaces */ for (i = 0; i < TCX_NREG; i++) sc->sc_phys[i] = ca->ca_ra.ra_reg[i]; sc->sc_bt = bt = (volatile struct bt_regs *) mapiodev(&ca->ca_ra.ra_reg[TCX_REG_CMAP], 0, sizeof *sc->sc_bt); sc->sc_thc = (volatile struct tcx_thc *) mapiodev(&ca->ca_ra.ra_reg[TCX_REG_THC], 0x1000, sizeof *sc->sc_thc); isconsole = node == fbnode; fb_setsize(&sc->sc_sunfb, 8, 1152, 900, node, ca->ca_bustype); if (node_has_property(node, "tcx-8-bit")) { sc->sc_dfb8 = mapiodev(&ca->ca_ra.ra_reg[TCX_REG_DFB8], 0, round_page(sc->sc_sunfb.sf_fbsize)); sc->sc_dfb24 = NULL; sc->sc_cplane = NULL; } else { sc->sc_dfb8 = mapiodev(&ca->ca_ra.ra_reg[TCX_REG_DFB8], 0, round_page(sc->sc_sunfb.sf_fbsize)); /* map the 24 bit and control planes for S24 framebuffers */ sc->sc_dfb24 = mapiodev(&ca->ca_ra.ra_reg[TCX_REG_DFB24], 0, round_page(sc->sc_sunfb.sf_fbsize * 4)); sc->sc_cplane = mapiodev(&ca->ca_ra.ra_reg[TCX_REG_RDFB32], 0, round_page(sc->sc_sunfb.sf_fbsize * 4)); } /* reset cursor & frame buffer controls */ sc->sc_sunfb.sf_depth = 0; /* force action */ tcx_reset(sc, 8); /* grab initial (current) color map */ bt->bt_addr = 0; for (i = 0; i < 256 * 3; i++) ((char *)&sc->sc_cmap)[i] = bt->bt_cmap >> 24; /* enable video */ tcx_burner(sc, 1, 0); sc->sc_sunfb.sf_ro.ri_hw = sc; sc->sc_sunfb.sf_ro.ri_bits = (void *)sc->sc_dfb8; fbwscons_init(&sc->sc_sunfb, isconsole ? 0 : RI_CLEAR); fbwscons_setcolormap(&sc->sc_sunfb, tcx_setcolor); sc->sc_ih.ih_fun = tcx_intr; sc->sc_ih.ih_arg = sc; intr_establish(ca->ca_ra.ra_intr[0].int_pri, &sc->sc_ih, IPL_FB, self->dv_xname); if (isconsole) { fbwscons_console_init(&sc->sc_sunfb, -1, tcx_burner); shutdownhook_establish(tcx_prom, sc); } sbus_establish(&sc->sc_sd, &sc->sc_sunfb.sf_dev); printf("%s: %dx%d, id %d, rev %d, sense %d\n", self->dv_xname, sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height, (sc->sc_thc->thc_config & THC_CFG_FBID) >> THC_CFG_FBID_SHIFT, (sc->sc_thc->thc_config & THC_CFG_REV) >> THC_CFG_REV_SHIFT, (sc->sc_thc->thc_config & THC_CFG_SENSE) >> THC_CFG_SENSE_SHIFT ); fbwscons_attach(&sc->sc_sunfb, &tcx_accessops, isconsole); } int tcx_ioctl(dev, cmd, data, flags, p) void *dev; u_long cmd; caddr_t data; int flags; struct proc *p; { struct tcx_softc *sc = dev; struct wsdisplay_cmap *cm; struct wsdisplay_fbinfo *wdf; int error; /* * Note that, although the emulation (text) mode is running in 8-bit * mode, if the frame buffer is able to run in 24-bit mode, it will * be advertized as such. */ switch (cmd) { case WSDISPLAYIO_GTYPE: if (sc->sc_cplane == NULL) *(u_int *)data = WSDISPLAY_TYPE_UNKNOWN; else *(u_int *)data = WSDISPLAY_TYPE_SUN24; 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 = sc->sc_cplane == NULL ? 256 : 0; break; case WSDISPLAYIO_LINEBYTES: if (sc->sc_cplane == NULL) *(u_int *)data = sc->sc_sunfb.sf_linebytes; else *(u_int *)data = sc->sc_sunfb.sf_linebytes * 4; break; case WSDISPLAYIO_GETCMAP: if (sc->sc_cplane == NULL) { cm = (struct wsdisplay_cmap *)data; error = bt_getcmap(&sc->sc_cmap, cm); if (error) return (error); } break; case WSDISPLAYIO_PUTCMAP: if (sc->sc_cplane == NULL) { cm = (struct wsdisplay_cmap *)data; error = bt_putcmap(&sc->sc_cmap, cm); if (error) return (error); tcx_loadcmap_deferred(sc, cm->index, cm->count); } break; case WSDISPLAYIO_SMODE: if (*(int *)data == WSDISPLAYIO_MODE_EMUL) { /* Back from X11 to text mode */ tcx_reset(sc, 8); } else { /* Starting X11, try to switch to 24 bit mode */ if (sc->sc_cplane != NULL) tcx_reset(sc, 32); } break; default: return (-1); /* not supported yet */ } return (0); } /* * Clean up hardware state (e.g., after bootup or after X crashes). */ void tcx_reset(sc, depth) struct tcx_softc *sc; int depth; { volatile struct bt_regs *bt; /* Hide the cursor, just in case */ sc->sc_thc->thc_cursoraddr = THC_CURSOFF; /* Enable cursor in Brooktree DAC. */ bt = sc->sc_bt; bt->bt_addr = 0x06 << 24; bt->bt_ctrl |= 0x03 << 24; /* * Change mode if appropriate */ if (sc->sc_sunfb.sf_depth != depth) { if (sc->sc_cplane != NULL) { volatile u_int32_t *cptr; u_int32_t pixel; int ramsize; cptr = sc->sc_cplane; ramsize = sc->sc_sunfb.sf_fbsize; if (depth == 8) { while (ramsize-- != 0) { pixel = (*cptr & TCX_CTL_PIXELMASK); *cptr++ = pixel | TCX_CTL_8_MAPPED; } } else { while (ramsize-- != 0) { *cptr++ = TCX_CTL_24_LEVEL; } } } if (depth == 8) fbwscons_setcolormap(&sc->sc_sunfb, tcx_setcolor); } sc->sc_sunfb.sf_depth = depth; } void tcx_prom(v) void *v; { struct tcx_softc *sc = v; extern struct consdev consdev_prom; if (sc->sc_sunfb.sf_depth != 8) { /* * Select 8-bit mode. */ tcx_reset(sc, 8); /* * Go back to prom output for the last few messages, so they * will be displayed correctly. */ cn_tab = &consdev_prom; } } void tcx_burner(v, on, flags) void *v; u_int on, flags; { struct tcx_softc *sc = v; int s; u_int32_t thcm; s = splhigh(); thcm = sc->sc_thc->thc_hcmisc; if (on) { thcm |= THC_MISC_VIDEN; thcm &= ~(THC_MISC_VSYNC_DISABLE | THC_MISC_HSYNC_DISABLE); } else { thcm &= ~THC_MISC_VIDEN; if (flags & WSDISPLAY_BURN_VBLANK) thcm |= THC_MISC_VSYNC_DISABLE | THC_MISC_HSYNC_DISABLE; } sc->sc_thc->thc_hcmisc = thcm; splx(s); } /* * 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 tcx_mmap(v, offset, prot) void *v; off_t offset; int prot; { struct tcx_softc *sc = v; if (offset & PGOFSET || offset < 0) return (-1); /* Allow mapping as a dumb framebuffer from offset 0 */ if (sc->sc_sunfb.sf_depth == 8 && offset < sc->sc_sunfb.sf_fbsize) return (REG2PHYS(&sc->sc_phys[TCX_REG_DFB8], offset) | PMAP_NC); else if (sc->sc_sunfb.sf_depth != 8 && offset < sc->sc_sunfb.sf_fbsize * 4) return (REG2PHYS(&sc->sc_phys[TCX_REG_DFB24], offset) | PMAP_NC); return (-1); /* not a user-map offset */ } void tcx_setcolor(v, index, r, g, b) void *v; u_int index; u_int8_t r, g, b; { struct tcx_softc *sc = v; bt_setcolor(&sc->sc_cmap, sc->sc_bt, index, r, g, b, 1); } int tcx_alloc_screen(v, type, cookiep, curxp, curyp, attrp) void *v; const struct wsscreen_descr *type; void **cookiep; int *curxp, *curyp; long *attrp; { struct tcx_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 tcx_free_screen(v, cookie) void *v; void *cookie; { struct tcx_softc *sc = v; sc->sc_nscreens--; } int tcx_show_screen(v, cookie, waitok, cb, cbarg) void *v; void *cookie; int waitok; void (*cb)(void *, int, int); void *cbarg; { return (0); } static __inline__ void tcx_loadcmap_deferred(struct tcx_softc *sc, u_int start, u_int ncolors) { u_int32_t thcm; thcm = sc->sc_thc->thc_hcmisc; thcm |= THC_MISC_INTEN; sc->sc_thc->thc_hcmisc = thcm; } int tcx_intr(v) void *v; { struct tcx_softc *sc = v; u_int32_t thcm; thcm = sc->sc_thc->thc_hcmisc; if (thcm & THC_MISC_INTEN) { thcm &= ~(THC_MISC_INTR | THC_MISC_INTEN); /* Acknowledge the interrupt */ sc->sc_thc->thc_hcmisc = thcm | THC_MISC_INTR; bt_loadcmap(&sc->sc_cmap, sc->sc_bt, 0, 256, 1); /* Disable further interrupts now */ sc->sc_thc->thc_hcmisc = thcm; return (1); } return (0); }