/* $OpenBSD: rfx.c,v 1.2 2004/11/29 22:07:41 miod Exp $ */ /* * Copyright (c) 2004, 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 Vitec RasterFlex family of frame buffers. * It should support RasterFlex-24, RasterFlex-32 and RasterFlex-HR. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * Configuration structure */ struct rfx_config { u_int16_t unknown; u_int16_t version; u_int32_t scanline; u_int32_t maxwidth; /* unsure */ u_int32_t maxheight; /* unsure */ u_int32_t width; u_int32_t height; }; /* * In-memory offsets */ #define RFX_RAMDAC_ADDR 0x00020000 #define RFX_RAMDAC_SIZE 0x00000004 #define RFX_CONTROL_ADDR 0x00040000 #define RFX_CONTROL_SIZE 0x000000e0 #define RFX_INIT_ADDR 0x00018000 #define RFX_INIT_OFFSET 0x0000001c #define RFX_INIT_SIZE 0x00008000 #define RFX_VRAM_ADDR 0x00100000 /* * Control registers */ #define RFX_VIDCTRL_REG 0x10 #define RFX_VSYNC_ENABLE 0x00000001 #define RFX_VIDEO_DISABLE 0x00000002 /* * Shadow colormap */ struct rfx_cmap { u_int8_t red[256]; u_int8_t green[256]; u_int8_t blue[256]; }; struct rfx_softc { struct sunfb sc_sunfb; struct sbusdev sc_sd; bus_space_tag_t sc_bustag; bus_addr_t sc_paddr; struct intrhand sc_ih; struct rfx_cmap sc_cmap; volatile u_int8_t *sc_ramdac; volatile u_int32_t *sc_ctrl; int sc_nscreens; }; int rfx_alloc_screen(void *, const struct wsscreen_descr *, void **, int *, int *, long *); void rfx_burner(void *, u_int, u_int); void rfx_free_screen(void *, void *); int rfx_ioctl(void *, u_long, caddr_t, int, struct proc *); int rfx_show_screen(void *, void *, int, void (*cb)(void *, int, int), void *); paddr_t rfx_mmap(void *, off_t, int); int rfx_getcmap(struct rfx_cmap *, struct wsdisplay_cmap *); int rfx_initialize(struct rfx_softc *, struct sbus_attach_args *, struct rfx_config *); int rfx_intr(void *); void rfx_loadcmap(struct rfx_softc *, int, int); int rfx_putcmap(struct rfx_cmap *, struct wsdisplay_cmap *); void rfx_setcolor(void *, u_int, u_int8_t, u_int8_t, u_int8_t); struct wsdisplay_accessops rfx_accessops = { rfx_ioctl, rfx_mmap, rfx_alloc_screen, rfx_free_screen, rfx_show_screen, NULL, /* load_font */ NULL, /* scrollback */ NULL, /* getchar */ rfx_burner, }; int rfxmatch(struct device *, void *, void *); void rfxattach(struct device *, struct device *, void *); #if defined(OpenBSD) struct cfattach rfx_ca = { sizeof (struct rfx_softc), rfxmatch, rfxattach }; struct cfdriver rfx_cd = { NULL, "rfx", DV_DULL }; #else CFATTACH_DECL(rfx, sizeof (struct rfx_softc), rfxmatch, rfxattach, NULL, NULL); #endif /* * Match a supported RasterFlex card. */ int rfxmatch(struct device *parent, void *vcf, void *aux) { struct sbus_attach_args *sa = aux; const char *device = sa->sa_name; /* skip vendor name (could be CWARE, VITec, ...) */ while (*device != ',' && *device != '\0') device++; if (*device == '\0') device = sa->sa_name; else device++; if (strncmp(device, "RasterFLEX", strlen("RasterFLEX")) != 0) return (0); /* RasterVideo and RasterFlex-TV are frame grabbers */ if (strcmp(device, "RasterFLEX-TV") == 0) return (0); return (1); } /* * Attach and initialize a rfx display, as well as a child wsdisplay. */ void rfxattach(struct device *parent, struct device *self, void *args) { struct rfx_softc *sc = (struct rfx_softc *)self; struct sbus_attach_args *sa = args; const char *device = sa->sa_name; struct rfx_config cf; bus_space_tag_t bt; bus_space_handle_t bh; int node, cflen, isconsole = 0; /* skip vendor name (could be CWARE, VITec, ...) */ while (*device != ',' && *device != '\0') device++; if (*device == '\0') device = sa->sa_name; else device++; printf(": %s", device); if (sa->sa_nreg == 0) { printf("\n%s: no SBus registers!\n", self->dv_xname); return; } bt = sa->sa_bustag; node = sa->sa_node; isconsole = node == fbnode; /* * Parse configuration structure */ cflen = getproplen(node, "configuration"); if (cflen != sizeof cf) { printf(", unknown %d bytes conf. structure", cflen); /* fill in default values */ cf.version = 0; cf.scanline = 2048; cf.width = 1152; cf.height = 900; } else { OF_getprop(node, "configuration", &cf, cflen); printf(", revision %d", cf.version); } /* * Map registers */ sc->sc_bustag = bt; sc->sc_paddr = sbus_bus_addr(bt, sa->sa_slot, sa->sa_offset); if (sbus_bus_map(bt, sa->sa_slot, sa->sa_offset + RFX_RAMDAC_ADDR, RFX_RAMDAC_SIZE, BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("\n%s: couldn't map ramdac registers\n", self->dv_xname); return; } sc->sc_ramdac = (u_int8_t *)bus_space_vaddr(bt, bh); if (sbus_bus_map(bt, sa->sa_slot, sa->sa_offset + RFX_CONTROL_ADDR, RFX_CONTROL_SIZE, BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("\n%s: couldn't map control registers\n", self->dv_xname); return; } sc->sc_ctrl = (u_int32_t *)bus_space_vaddr(bt, bh); #if 0 /* not yet */ sc->sc_ih.ih_fun = rfx_intr; sc->sc_ih.ih_arg = sc; intr_establish(ca->ca_ra.ra_intr[0].int_pri, &sc->sc_ih, IPL_FB); #endif /* * The following is an equivalent for * fb_setsize(&sc->sc_sunfb, 8, cf.width, cf.height, * node, ca->ca_bustype); * forcing the correct scan line value. Since the usual frame buffer * properties are missing on this card, no need to go through * fb_setsize()... */ sc->sc_sunfb.sf_depth = 8; sc->sc_sunfb.sf_width = cf.width; sc->sc_sunfb.sf_height = cf.height; sc->sc_sunfb.sf_linebytes = cf.scanline; sc->sc_sunfb.sf_fbsize = cf.height * cf.scanline; printf(", %dx%d\n", sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height); if (sbus_bus_map(bt, sa->sa_slot, sa->sa_offset + RFX_VRAM_ADDR, round_page(sc->sc_sunfb.sf_fbsize), BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("\n%s: couldn't map video memory\n", self->dv_xname); return; } sc->sc_sunfb.sf_ro.ri_bits = bus_space_vaddr(bt, bh); sc->sc_sunfb.sf_ro.ri_hw = sc; /* * If we are not the console, the frame buffer has not been * initalized by the PROM - do this ourselves. */ if (!isconsole) { if (rfx_initialize(sc, sa, &cf) != 0) return; } fbwscons_init(&sc->sc_sunfb, isconsole ? 0 : RI_CLEAR); bzero(&sc->sc_cmap, sizeof(sc->sc_cmap)); fbwscons_setcolormap(&sc->sc_sunfb, rfx_setcolor); if (isconsole) { fbwscons_console_init(&sc->sc_sunfb, -1, rfx_burner); } /* enable video */ rfx_burner(sc, 1, 0); sbus_establish(&sc->sc_sd, &sc->sc_sunfb.sf_dev); fbwscons_attach(&sc->sc_sunfb, &rfx_accessops, isconsole); } /* * Common wsdisplay operations */ int rfx_ioctl(void *v, u_long cmd, caddr_t data, int flags, struct proc *p) { struct rfx_softc *sc = v; struct wsdisplay_cmap *cm; struct wsdisplay_fbinfo *wdf; int error; switch (cmd) { case WSDISPLAYIO_GTYPE: *(u_int *)data = WSDISPLAY_TYPE_RFLEX; 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 = rfx_getcmap(&sc->sc_cmap, cm); if (error != 0) return (error); break; case WSDISPLAYIO_PUTCMAP: cm = (struct wsdisplay_cmap *)data; error = rfx_putcmap(&sc->sc_cmap, cm); if (error != 0) return (error); rfx_loadcmap(sc, cm->index, cm->count); break; default: return (-1); } return (0); } paddr_t rfx_mmap(void *v, off_t offset, int prot) { struct rfx_softc *sc = v; if (offset & PGOFSET) return (-1); if (offset >= 0 && offset < sc->sc_sunfb.sf_fbsize) { return (bus_space_mmap(sc->sc_bustag, sc->sc_paddr, RFX_VRAM_ADDR + offset, prot, BUS_SPACE_MAP_LINEAR)); } return (-1); } int rfx_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep, int *curxp, int *curyp, long *attrp) { struct rfx_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 rfx_free_screen(void *v, void *cookie) { struct rfx_softc *sc = v; sc->sc_nscreens--; } int rfx_show_screen(void *v, void *cookie, int waitok, void (*cb)(void *, int, int), void *cbarg) { return (0); } void rfx_burner(void *v, u_int on, u_int flags) { struct rfx_softc *sc = v; if (on) { sc->sc_ctrl[RFX_VIDCTRL_REG] &= ~RFX_VIDEO_DISABLE; sc->sc_ctrl[RFX_VIDCTRL_REG] |= RFX_VSYNC_ENABLE; } else { sc->sc_ctrl[RFX_VIDCTRL_REG] |= RFX_VIDEO_DISABLE; if (flags & WSDISPLAY_BURN_VBLANK) sc->sc_ctrl[RFX_VIDCTRL_REG] &= ~RFX_VSYNC_ENABLE; } } /* * Colormap helper functions */ void rfx_setcolor(void *v, u_int index, u_int8_t r, u_int8_t g, u_int8_t b) { struct rfx_softc *sc = v; sc->sc_cmap.red[index] = r; sc->sc_cmap.green[index] = g; sc->sc_cmap.blue[index] = b; rfx_loadcmap(sc, index, 1); } int rfx_getcmap(struct rfx_cmap *cm, struct wsdisplay_cmap *rcm) { u_int index = rcm->index, count = rcm->count; int error; if (index >= 256 || count > 256 - index) return (EINVAL); if ((error = copyout(cm->red + index, rcm->red, count)) != 0) return (error); if ((error = copyout(cm->green + index, rcm->green, count)) != 0) return (error); if ((error = copyout(cm->blue + index, rcm->blue, count)) != 0) return (error); return (0); } int rfx_putcmap(struct rfx_cmap *cm, struct wsdisplay_cmap *rcm) { u_int index = rcm->index, count = rcm->count; u_int8_t red[256], green[256], blue[256]; int error; if (index >= 256 || count > 256 - index) return (EINVAL); if ((error = copyin(rcm->red, red, count)) != 0) return (error); if ((error = copyin(rcm->green, green, count)) != 0) return (error); if ((error = copyin(rcm->blue, blue, count)) != 0) return (error); bcopy(red, cm->red + index, count); bcopy(green, cm->green + index, count); bcopy(blue, cm->blue + index, count); return (0); } void rfx_loadcmap(struct rfx_softc *sc, int start, int ncolors) { u_int8_t *r, *g, *b; r = sc->sc_cmap.red + start; g = sc->sc_cmap.green + start; b = sc->sc_cmap.blue + start; start += BT463_IREG_CPALETTE_RAM; sc->sc_ramdac[BT463_REG_ADDR_LOW] = start & 0xff; sc->sc_ramdac[BT463_REG_ADDR_HIGH] = (start >> 8) & 0xff; while (ncolors-- != 0) { sc->sc_ramdac[BT463_REG_CMAP_DATA] = *r++; sc->sc_ramdac[BT463_REG_CMAP_DATA] = *g++; sc->sc_ramdac[BT463_REG_CMAP_DATA] = *b++; } } /* * Initialization code parser */ int rfx_initialize(struct rfx_softc *sc, struct sbus_attach_args *sa, struct rfx_config *cf) { u_int32_t *data, offset, value; size_t cnt; bus_space_handle_t bh; int error; /* * Map the initialization data */ if ((error = sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset + RFX_INIT_ADDR, RFX_INIT_SIZE, BUS_SPACE_MAP_LINEAR, 0, &bh)) != 0) { printf("\n%s: couldn't map initialization data\n", sc->sc_sunfb.sf_dev.dv_xname); return error; } data = (u_int32_t *)bus_space_vaddr(sa->sa_bustag, bh); /* * Skip copyright notice */ data += RFX_INIT_OFFSET / sizeof(u_int32_t); cnt = RFX_INIT_SIZE - RFX_INIT_OFFSET / sizeof(u_int32_t); cnt >>= 1; /* * Parse and apply settings */ while (cnt != 0) { offset = *data++; value = *data++; if (offset == (u_int32_t)-1 && value == (u_int32_t)-1) break; /* Old PROM are little-endian */ if (cf->version <= 1) { offset = letoh32(offset); value = letoh32(offset); } if (offset & (1 << 31)) { offset = (offset & ~(1 << 31)) - RFX_RAMDAC_ADDR; if (offset < RFX_RAMDAC_SIZE) sc->sc_ramdac[offset] = value >> 24; } else { offset -= RFX_CONTROL_ADDR; if (offset < RFX_CONTROL_SIZE) sc->sc_ctrl[offset >> 2] = value; } cnt--; } #ifdef DEBUG if (cnt == 0) printf("%s: incoherent initialization data!\n"); #endif bus_space_unmap(sa->sa_bustag, bh, RFX_INIT_SIZE); return 0; }