/* $OpenBSD: agten.c,v 1.11 2018/12/27 11:09:17 claudio 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. * */ /* * Fujitsu AG-10 framebuffer driver. * * The AG-10 is mostly made of: * - a 3DLabs 300SX Glint chip, with two 6MB independent framebuffer spaces * - a Number Nine Imagine 128 chip with its own 4MB framebuffer space * - a Weitek P9100 with its own 2MB of framebuffer memory * - an IBM PaletteDAC 561 ramdac * - an Analog Devices ADSP-21062 * * All of these chips (memory, registers, etc) are mapped in the SBus * memory space associated to the board. What is unexpected, however, is * that there are also PCI registers mappings for the first three chips! * * The three graphics chips act as overlays of each other, for the final * video output. * * The PROM initialization will use the I128 framebuffer memory for output, * which is ``above'' the P9100. The P9100 seems to only be there to provide * a simple RAMDAC interface, but its frame buffer memory is accessible and * will appear as an ``underlay'' plane. */ /* * TODO * - initialize the I128 in 32bit mode * - use the i128 acceleration features */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include struct agten_cmap { u_int8_t cm_red[256]; u_int8_t cm_green[256]; u_int8_t cm_blue[256]; }; /* per-display variables */ struct agten_softc { struct sunfb sc_sunfb; /* common base part */ bus_space_tag_t sc_bustag; bus_addr_t sc_paddr; off_t sc_physoffset; /* offset for frame buffer */ volatile u_int8_t *sc_p9100; struct agten_cmap sc_cmap; /* shadow color map */ volatile u_int32_t *sc_i128_fb; int sc_nscreens; }; int agten_ioctl(void *, u_long, caddr_t, int, struct proc *); paddr_t agten_mmap(void *, off_t, int); void agten_reset(struct agten_softc *); void agten_setcolor(void *, u_int, u_int8_t, u_int8_t, u_int8_t); static __inline__ void ibm561_write(struct agten_softc *, u_int32_t, u_int32_t); int agten_getcmap(struct agten_cmap *, struct wsdisplay_cmap *); int agten_putcmap(struct agten_cmap *, struct wsdisplay_cmap *); void agten_loadcmap(struct agten_softc *, u_int, u_int); struct wsdisplay_accessops agten_accessops = { .ioctl = agten_ioctl, .mmap = agten_mmap }; int agtenmatch(struct device *, void *, void *); void agtenattach(struct device *, struct device *, void *); struct cfattach agten_ca = { sizeof(struct agten_softc), agtenmatch, agtenattach }; struct cfdriver agten_cd = { NULL, "agten", DV_DULL }; int agtenmatch(struct device *parent, void *vcf, void *aux) { struct sbus_attach_args *sa = aux; if (strcmp(sa->sa_name, "PFU,aga") != 0) return (0); return (1); } void agtenattach(struct device *parent, struct device *self, void *args) { struct agten_softc *sc = (struct agten_softc *)self; struct sbus_attach_args *sa = args; bus_space_tag_t bt; bus_space_handle_t bh; int node, isconsole; char *nam; bt = sa->sa_bustag; node = sa->sa_node; nam = getpropstring(node, "model"); printf(": model %s", nam); isconsole = node == fbnode; /* * Map the various beasts of this card we are interested in. */ sc->sc_bustag = bt; sc->sc_paddr = sbus_bus_addr(bt, sa->sa_slot, sa->sa_offset); sc->sc_physoffset = (off_t)getpropint(node, "i128_fb_physaddr", 0x8000000); if (sbus_bus_map(bt, sa->sa_slot, sa->sa_offset + sc->sc_physoffset, getpropint(node, "i128_fb_size", 0x400000), BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("\n%s: couldn't map video memory\n", self->dv_xname); return; } sc->sc_i128_fb = bus_space_vaddr(bt, bh); if (sbus_bus_map(bt, sa->sa_slot, sa->sa_offset + getpropint(node, "p9100_reg_physaddr", 0x10a0000), 0x4000, BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("\n%s: couldn't map control registers\n", self->dv_xname); return; } sc->sc_p9100 = bus_space_vaddr(bt, bh); /* * For some reason the agten does not use the canonical name for * properties, but uses an ffb_ prefix; and the linebytes property is * missing. * The following is a specific version of * fb_setsize(&sc->sc_sunfb, 8, 1152, 900, node, BUS_SBUS); * using the correct property names. */ #ifdef notyet sc->sc_sunfb.sf_depth = 32; #else sc->sc_sunfb.sf_depth = getpropint(node, "ffb_depth", 8); #endif sc->sc_sunfb.sf_width = getpropint(node, "ffb_width", 1152); sc->sc_sunfb.sf_height = getpropint(node, "ffb_height", 900); sc->sc_sunfb.sf_linebytes = roundup(sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_depth) * sc->sc_sunfb.sf_depth / 8; sc->sc_sunfb.sf_fbsize = sc->sc_sunfb.sf_height * sc->sc_sunfb.sf_linebytes; printf(", %dx%d, depth %d\n", sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height, sc->sc_sunfb.sf_depth); sc->sc_sunfb.sf_ro.ri_bits = (void *)sc->sc_i128_fb; sc->sc_sunfb.sf_ro.ri_hw = sc; fbwscons_init(&sc->sc_sunfb, 0, isconsole); fbwscons_setcolormap(&sc->sc_sunfb, agten_setcolor); if (isconsole) fbwscons_console_init(&sc->sc_sunfb, -1); fbwscons_attach(&sc->sc_sunfb, &agten_accessops, isconsole); } int agten_ioctl(void *dev, u_long cmd, caddr_t data, int flags, struct proc *p) { struct agten_softc *sc = dev; struct wsdisplay_cmap *cm; struct wsdisplay_fbinfo *wdf; int error; switch (cmd) { case WSDISPLAYIO_GTYPE: *(u_int *)data = WSDISPLAY_TYPE_AGTEN; 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_sunfb.sf_depth == 8) ? 256 : 0; break; case WSDISPLAYIO_LINEBYTES: *(u_int *)data = sc->sc_sunfb.sf_linebytes; break; case WSDISPLAYIO_GETCMAP: if (sc->sc_sunfb.sf_depth == 8) { cm = (struct wsdisplay_cmap *)data; error = agten_getcmap(&sc->sc_cmap, cm); if (error) return (error); } break; case WSDISPLAYIO_PUTCMAP: if (sc->sc_sunfb.sf_depth == 8) { cm = (struct wsdisplay_cmap *)data; error = agten_putcmap(&sc->sc_cmap, cm); if (error) return (error); agten_loadcmap(sc, 0, 256); } 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); /* not supported yet */ } 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 agten_mmap(void *v, off_t offset, int prot) { struct agten_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 (bus_space_mmap(sc->sc_bustag, sc->sc_paddr, sc->sc_physoffset + offset, prot, BUS_SPACE_MAP_LINEAR)); } return (-1); /* not a user-map offset */ } void agten_setcolor(void *v, u_int index, u_int8_t r, u_int8_t g, u_int8_t b) { struct agten_softc *sc = v; sc->sc_cmap.cm_red[index] = r; sc->sc_cmap.cm_green[index] = g; sc->sc_cmap.cm_blue[index] = b; agten_loadcmap(sc, index, 1); } int agten_getcmap(struct agten_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->cm_red[index], rcm->red, count)) != 0) return (error); if ((error = copyout(&cm->cm_green[index], rcm->green, count)) != 0) return (error); if ((error = copyout(&cm->cm_blue[index], rcm->blue, count)) != 0) return (error); return (0); } int agten_putcmap(struct agten_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 = copyin(rcm->red, &cm->cm_red[index], count)) != 0) return (error); if ((error = copyin(rcm->green, &cm->cm_green[index], count)) != 0) return (error); if ((error = copyin(rcm->blue, &cm->cm_blue[index], count)) != 0) return (error); return (0); } static __inline__ void ibm561_write(struct agten_softc *sc, u_int32_t reg, u_int32_t value) { /* * For some design reason the IBM561 PaletteDac needs to be fed * values shifted left by 16 bits. What happened to simplicity? */ *(volatile u_int32_t *)(sc->sc_p9100 + P9100_RAMDAC_REGISTER(reg)) = (value) << 16; } void agten_loadcmap(struct agten_softc *sc, u_int start, u_int ncolors) { int i; u_int8_t *red, *green, *blue; ibm561_write(sc, IBM561_ADDR_LOW, (IBM561_CMAP_TABLE + start) & 0xff); ibm561_write(sc, IBM561_ADDR_HIGH, ((IBM561_CMAP_TABLE + start) >> 8) & 0xff); red = sc->sc_cmap.cm_red; green = sc->sc_cmap.cm_green; blue = sc->sc_cmap.cm_blue; for (i = start; i < start + ncolors; i++) { ibm561_write(sc, IBM561_CMD_CMAP, *red++); ibm561_write(sc, IBM561_CMD_CMAP, *green++); ibm561_write(sc, IBM561_CMD_CMAP, *blue++); } }