/* $OpenBSD: tvtwo.c,v 1.7 2005/03/07 21:21:03 miod Exp $ */ /* * Copyright (c) 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. * */ /* * Driver for the Parallax XVideo and PowerVideo graphics boards. * * Some details about these board are available at: * http://www.jlw.com/~woolsey/parallax/support/developers/xvideotech.html */ /* * The Parallax XVideo series frame buffers are 8/24-bit accelerated * frame buffers, with hardware MPEG capabilities using a CCube chipset. */ /* * Currently, this driver can only handle the 24-bit plane of the frame * buffer, in an unaccelerated mode. * * TODO: * - nvram handling * - use the accelerator * - interface to the c^3 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * The memory layout of the board is as follows: * * PROM0 000000 - 00ffff * overlay plane 010000 - 037fff * registers 040000 - 0404d0 * CCube 050000 - 05ffff * 8-bit plane 080000 - 17ffff * 24-bit plane 200000 - 6fffff * PROM1 7f0000 - 7fffff * * Older XVideo provide two sets of SBus registers: * R0 040000 - 040800 * R1 080000 - 17d200 * While the more recent revisions provide only one register: * R0 000000 - 7fffff * * We currently refuse to attach to the old version because mapping * things requires us to play with the sbus register ranges, and I * don't want to play this game without the hardware at hand -- miod * * At PROM initialization, the board will be in 24-bit mode, * so no specific initialization is necessary. */ #define PX_PROM0_OFFSET 0x000000 #define PX_OVERAY_OFFSET 0x010000 #define PX_REG_OFFSET 0x040000 #define PX_CCUBE_OFFSET 0x050000 #define PX_PLANE8_OFFSET 0x080000 #define PX_PLANE24_OFFSET 0x200000 #define PX_PROM1_OFFSET 0x7f0000 /* * Partial registers layout */ #define PX_REG_DISPKLUDGE 0x00b8 /* write only */ #define DISPKLUDGE_DEFAULT 0xc41f #define DISPKLUDGE_BLANK (1 << 12) #define PX_REG_BT463_RED 0x0480 #define PX_REG_BT463_GREEN 0x0490 #define PX_REG_BT463_BLUE 0x04a0 #define PX_REG_BT463_ALL 0x04b0 #define PX_REG_SIZE 0x04d0 /* per-display variables */ struct tvtwo_softc { struct sunfb sc_sunfb; /* common base device */ struct sbusdev sc_sd; /* sbus device */ struct rom_reg sc_phys; volatile u_int8_t *sc_regs; int sc_nscreens; }; int tvtwo_ioctl(void *, u_long, caddr_t, int, struct proc *); int tvtwo_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, int *, long *); void tvtwo_free_screen(void *, void *); int tvtwo_show_screen(void *, void *, int, void (*cb)(void *, int, int), void *); paddr_t tvtwo_mmap(void *, off_t, int); void tvtwo_burner(void *, u_int, u_int); static __inline__ void tvtwo_ramdac_wraddr(struct tvtwo_softc *sc, u_int32_t addr); void tvtwo_initcmap(struct tvtwo_softc *); struct wsdisplay_accessops tvtwo_accessops = { tvtwo_ioctl, tvtwo_mmap, tvtwo_alloc_screen, tvtwo_free_screen, tvtwo_show_screen, NULL, /* load_font */ NULL, /* scrollback */ NULL, /* getchar */ tvtwo_burner, }; int tvtwomatch(struct device *, void *, void *); void tvtwoattach(struct device *, struct device *, void *); struct cfattach tvtwo_ca = { sizeof(struct tvtwo_softc), tvtwomatch, tvtwoattach }; struct cfdriver tvtwo_cd = { NULL, "tvtwo", DV_DULL }; /* * Default frame buffer resolution, depending upon the "freqcode" */ #define NFREQCODE 5 const int defwidth[NFREQCODE] = { 1152, 1152, 1152, 1024, 640 }; const int defheight[NFREQCODE] = { 900, 900, 900, 768, 480 }; /* * Match an XVideo or PowerVideo card. */ int tvtwomatch(struct device *parent, void *vcf, void *aux) { struct confargs *ca = aux; struct romaux *ra = &ca->ca_ra; if (strcmp(ra->ra_name, "PGI,tvtwo") == 0 || strcmp(ra->ra_name, "PGI,tvthree") == 0) return (1); return (0); } /* * Attach a display. */ void tvtwoattach(struct device *parent, struct device *self, void *args) { struct tvtwo_softc *sc = (struct tvtwo_softc *)self; struct confargs *ca = args; int node, width, height, freqcode; int isconsole; char *freqstring; node = ca->ca_ra.ra_node; printf(": %s", getpropstring(node, "model")); printf(", revision %s\n", getpropstring(node, "revision")); /* We do not handle older boards yet. */ if (ca->ca_ra.ra_nreg != 1) { printf("%s: old-style boards with %d registers are not supported\n" "%s: please report this to \n", self->dv_xname, ca->ca_ra.ra_nreg, self->dv_xname); return; } isconsole = node == fbnode; /* Map registers. */ sc->sc_regs = mapiodev(ca->ca_ra.ra_reg, PX_REG_OFFSET, PX_REG_SIZE); /* Compute framebuffer size. */ freqstring = getpropstring(node, "freqcode"); freqcode = (int)*freqstring; if (freqcode == 'g') { width = height = 1024; } else { if (freqcode < '1' || freqcode > NFREQCODE + '0') freqcode = 0; else freqcode -= '1'; width = defwidth[freqcode]; height = defheight[freqcode]; } width = getpropint(node, "hres", width); height = getpropint(node, "vres", height); fb_setsize(&sc->sc_sunfb, 32, width, height, node, ca->ca_bustype); /* Map the frame buffer memory area we're interested in. */ sc->sc_phys = ca->ca_ra.ra_reg[0]; sc->sc_sunfb.sf_ro.ri_bits = mapiodev(ca->ca_ra.ra_reg, PX_PLANE24_OFFSET, round_page(sc->sc_sunfb.sf_fbsize)); /* Initialize a direct color map. */ tvtwo_initcmap(sc); sc->sc_sunfb.sf_ro.ri_hw = sc; fbwscons_init(&sc->sc_sunfb, isconsole ? 0 : RI_CLEAR); printf("%s: %dx%d\n", self->dv_xname, sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height); if (isconsole) { fbwscons_console_init(&sc->sc_sunfb, -1); } sbus_establish(&sc->sc_sd, &sc->sc_sunfb.sf_dev); fbwscons_attach(&sc->sc_sunfb, &tvtwo_accessops, isconsole); } int tvtwo_ioctl(void *dev, u_long cmd, caddr_t data, int flags, struct proc *p) { struct tvtwo_softc *sc = dev; struct wsdisplay_fbinfo *wdf; switch (cmd) { case WSDISPLAYIO_GTYPE: *(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 = 0; break; case WSDISPLAYIO_LINEBYTES: *(u_int *)data = sc->sc_sunfb.sf_linebytes; break; case WSDISPLAYIO_GETCMAP: case WSDISPLAYIO_PUTCMAP: break; case WSDISPLAYIO_SVIDEO: case WSDISPLAYIO_GVIDEO: break; case WSDISPLAYIO_GCURPOS: case WSDISPLAYIO_SCURPOS: case WSDISPLAYIO_GCURMAX: case WSDISPLAYIO_GCURSOR: case WSDISPLAYIO_SCURSOR: default: return (-1); } 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 tvtwo_mmap(void *v, off_t offset, int prot) { struct tvtwo_softc *sc = v; if (offset & PGOFSET) return (-1); /* Allow mapping as a dumb framebuffer from offset 0 */ if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize) { return (REG2PHYS(&sc->sc_phys, PX_PLANE24_OFFSET + offset) | PMAP_NC); } return (-1); } int tvtwo_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep, int *curxp, int *curyp, long *attrp) { struct tvtwo_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, 0, 0, 0, attrp); sc->sc_nscreens++; return (0); } void tvtwo_free_screen(void *v, void *cookie) { struct tvtwo_softc *sc = v; sc->sc_nscreens--; } int tvtwo_show_screen(void *v, void *cookie, int waitok, void (*cb)(void *, int, int), void *cbarg) { return (0); } /* * Simple Bt463 programming routines. */ static __inline__ void tvtwo_ramdac_wraddr(struct tvtwo_softc *sc, u_int32_t addr) { volatile u_int32_t *dac = (u_int32_t *)(sc->sc_regs + PX_REG_BT463_RED); dac[0] = (addr & 0xff); /* lo addr */ dac[1] = ((addr >> 8) & 0xff); /* hi addr */ } void tvtwo_initcmap(struct tvtwo_softc *sc) { volatile u_int32_t *dac = (u_int32_t *)(sc->sc_regs + PX_REG_BT463_RED); u_int32_t c; tvtwo_ramdac_wraddr(sc, 0); for (c = 0; c < 256; c++) { dac[3] = c; /* R */ dac[3] = c; /* G */ dac[3] = c; /* B */ } } void tvtwo_burner(void *v, u_int on, u_int flags) { struct tvtwo_softc *sc = v; volatile u_int32_t *dispkludge = (u_int32_t *)(sc->sc_regs + PX_REG_DISPKLUDGE); if (on) *dispkludge = DISPKLUDGE_DEFAULT & ~DISPKLUDGE_BLANK; else *dispkludge = DISPKLUDGE_DEFAULT | DISPKLUDGE_BLANK; }