/* $OpenBSD: vigra.c,v 1.10 2006/12/17 22:18:16 miod 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. * */ /* * Driver for the Vigra VS series of SBus framebuffers. * * The VS10, VS11 and VS12 models are supported. VS10-EK is handled by the * regular cgthree driver. * * 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 /* * The hardware information below has been gathered through experiments, as * well as the debug information of the SunOS 4.x vigfb driver. */ /* * Control and status registers */ struct csregs { u_int32_t sosr; u_int32_t g3rr; u_int32_t bcr; /* board control register */ u_int32_t spr; u_int32_t g3sr; /* ramdac status register */ #define STATUS_INTR 0x0001 u_int32_t imr; /* interrupt mode register */ u_int32_t ewcr; u_int32_t ssr; }; /* * G300 layout */ struct g300dac { u_int32_t cmap[256]; u_int32_t g3null; u_int32_t unused1[32]; u_int32_t half_sync; u_int32_t back_porch; u_int32_t display; u_int32_t short_display; u_int32_t broad_pulse; u_int32_t vsync; u_int32_t vblank; u_int32_t vdisplay; u_int32_t line_time; u_int32_t tos1; u_int32_t mem_init; u_int32_t transfer_delay; u_int32_t unused2[19]; u_int32_t mask; u_int32_t unused3[31]; u_int32_t cr; u_int32_t unused4[31]; u_int32_t tos2; u_int32_t unused5[31]; u_int32_t boot_location; }; /* * G335 layout */ struct g335dac { u_int32_t boot_location; u_int32_t unused1[32]; u_int32_t half_sync; u_int32_t back_porch; u_int32_t display; u_int32_t short_display; u_int32_t broad_pulse; u_int32_t vsync; u_int32_t vpre_equalize; u_int32_t vpost_equalize; u_int32_t vblank; u_int32_t vdisplay; u_int32_t line_time; u_int32_t tos1; u_int32_t mem_init; u_int32_t transfer_delay; u_int32_t unused2[17]; u_int32_t mask; u_int32_t unused3[31]; u_int32_t cra; u_int32_t unused4[15]; u_int32_t crb; u_int32_t unused5[15]; u_int32_t tos2; u_int32_t unused6[32]; u_int32_t cursor_palette[3]; u_int32_t unused7[28]; u_int32_t checksum[3]; u_int32_t unused8[4]; u_int32_t cursor_position; u_int32_t unused9[56]; u_int32_t cmap[256]; u_int32_t cursor_store[512]; }; union dac { struct g300dac g300; struct g335dac g335; }; /* * SBUS register mappings */ #define VIGRA_REG_RAMDAC 1 /* either G300 or G335 */ #define VIGRA_REG_CSR 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 */ bus_space_tag_t sc_bustag; bus_addr_t sc_paddr; volatile struct csregs *sc_regs;/* control registers */ volatile union dac *sc_ramdac; /* ramdac registers */ union vigracmap sc_cmap; /* current colormap */ int sc_g300; void *sc_ih; int sc_nscreens; }; 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); int vigra_putcmap(union vigracmap *, struct wsdisplay_cmap *, int); 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 supported vigra card. */ int vigramatch(struct device *parent, void *vcf, void *aux) { struct sbus_attach_args *sa = aux; if (strcmp("vs10", sa->sa_name) != 0 && strcmp("vs11", sa->sa_name) != 0 && strcmp("vs12", sa->sa_name) != 0) return (0); return (1); } /* * Attach and initialize a vigra display, as well as a child wsdisplay. */ void vigraattach(struct device *parent, struct device *self, void *args) { struct vigra_softc *sc = (struct vigra_softc *)self; struct sbus_attach_args *sa = args; bus_space_tag_t bt; bus_space_handle_t bh; int node, row, isconsole = 0; char *nam; bt = sa->sa_bustag; node = sa->sa_node; nam = getpropstring(node, "model"); if (*nam == '\0') nam = (char *)sa->sa_name; printf(": %s", nam); isconsole = node == fbnode; if (sa->sa_nreg < VIGRA_NREG) { printf("\n%s: expected %d registers, got %d", self->dv_xname, VIGRA_NREG, sa->sa_nreg); return; } /* * Check whether we are using an G300 or an G335 chip. * The VS10 and VS12 use the G300, while the VS11 uses a G335. */ sc->sc_g300 = strncmp(nam, "VIGRA,vs11", strlen("VIGRA,vs11")); sc->sc_bustag = bt; if (sbus_bus_map(bt, sa->sa_reg[VIGRA_REG_CSR].sbr_slot, sa->sa_reg[VIGRA_REG_CSR].sbr_offset, sa->sa_reg[VIGRA_REG_CSR].sbr_size, BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("\n%s: can't map control registers\n", self->dv_xname); return; } sc->sc_regs = bus_space_vaddr(bt, bh); if (sbus_bus_map(bt, sa->sa_reg[VIGRA_REG_RAMDAC].sbr_slot, sa->sa_reg[VIGRA_REG_RAMDAC].sbr_offset, sa->sa_reg[VIGRA_REG_RAMDAC].sbr_size, BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("\n%s: can't map ramdac registers\n", self->dv_xname); return; } sc->sc_ramdac = bus_space_vaddr(bt, bh); /* enable video */ vigra_burner(sc, 1, 0); fb_setsize(&sc->sc_sunfb, 8, 1152, 900, node, 0); if (sbus_bus_map(bt, sa->sa_reg[VIGRA_REG_VRAM].sbr_slot, sa->sa_reg[VIGRA_REG_VRAM].sbr_offset, round_page(sc->sc_sunfb.sf_fbsize), BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { printf("\n%s: can'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; sc->sc_paddr = sbus_bus_addr(bt, sa->sa_reg[VIGRA_REG_VRAM].sbr_slot, sa->sa_reg[VIGRA_REG_VRAM].sbr_offset); printf(", %dx%d\n", sc->sc_sunfb.sf_width, sc->sc_sunfb.sf_height); if ((sc->sc_ih = bus_intr_establish(sa->sa_bustag, sa->sa_pri, IPL_TTY, 0, vigra_intr, sc, self->dv_xname)) == NULL) { printf("%s: couldn't establish interrupt, pri %d\n", self->dv_xname, INTLEV(sa->sa_pri)); } /* * 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 * * Also, in 1280x1024 resolution, the PROM display is not centered * vertically (why? no other frame buffer does this in such a mode!), * so be lazy and clear the screen here too anyways... */ fbwscons_init(&sc->sc_sunfb, isconsole && (sc->sc_sunfb.sf_width != 800 && sc->sc_sunfb.sf_width != 1280) ? 0 : RI_CLEAR); fbwscons_setcolormap(&sc->sc_sunfb, vigra_setcolor); if (isconsole) { switch (sc->sc_sunfb.sf_width) { case 640: row = sc->sc_sunfb.sf_ro.ri_rows - 1; break; case 800: case 1280: row = 0; /* screen has been cleared above */ break; default: row = -1; break; } fbwscons_console_init(&sc->sc_sunfb, row); } fbwscons_attach(&sc->sc_sunfb, &vigra_accessops, isconsole); } int vigra_ioctl(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, sc->sc_g300); if (error) return (error); break; case WSDISPLAYIO_PUTCMAP: cm = (struct wsdisplay_cmap *)data; error = vigra_putcmap(&sc->sc_cmap, cm, sc->sc_g300); if (error) return (error); /* if we can handle interrupts, defer the update */ if (sc->sc_ih != NULL) vigra_loadcmap_deferred(sc, cm->index, cm->count); else vigra_loadcmap_immediate(sc, cm->index, cm->count); 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); } int vigra_alloc_screen(void *v, const struct wsscreen_descr *type, void **cookiep, int *curxp, int *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(void *v, void *cookie) { struct vigra_softc *sc = v; sc->sc_nscreens--; } int vigra_show_screen(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(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 (bus_space_mmap(sc->sc_bustag, sc->sc_paddr, offset, prot, BUS_SPACE_MAP_LINEAR)); } return (-1); } void vigra_setcolor(void *v, u_int index, u_int8_t r, u_int8_t g, u_int8_t b) { struct vigra_softc *sc = v; if (sc->sc_g300) { sc->sc_cmap.cm_map[index][3] = r; sc->sc_cmap.cm_map[index][2] = g; sc->sc_cmap.cm_map[index][1] = b; } else { sc->sc_cmap.cm_map[index][3] = b; sc->sc_cmap.cm_map[index][2] = g; sc->sc_cmap.cm_map[index][1] = r; } sc->sc_cmap.cm_map[index][0] = 0; /* no alpha channel */ vigra_loadcmap_immediate(sc, index, 1); } int vigra_getcmap(union vigracmap *cm, struct wsdisplay_cmap *rcm, int g300) { u_int index = rcm->index, count = rcm->count, i; int error; if (index >= 256 || count > 256 - index) return (EINVAL); if (g300) { 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][1], &rcm->blue[i], 1)) != 0) return (error); } } else { for (i = 0; i < count; i++) { if ((error = copyout(&cm->cm_map[index + i][1], &rcm->red[i], 1)) != 0) return (error); if ((error = copyout(&cm->cm_map[index + i][3], &rcm->blue[i], 1)) != 0) return (error); } } for (i = 0; i < count; i++) { if ((error = copyout(&cm->cm_map[index + i][2], &rcm->green[i], 1)) != 0) return (error); } return (0); } int vigra_putcmap(union vigracmap *cm, struct wsdisplay_cmap *rcm, int g300) { u_int index = rcm->index, count = rcm->count, i; int error; if (index >= 256 || count > 256 - index) return (EINVAL); if (g300) { 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->blue[i], &cm->cm_map[index + i][1], 1)) != 0) return (error); } } else { for (i = 0; i < count; i++) { if ((error = copyin(&rcm->red[i], &cm->cm_map[index + i][1], 1)) != 0) return (error); if ((error = copyin(&rcm->blue[i], &cm->cm_map[index + i][3], 1)) != 0) return (error); } } for (i = 0; i < count; i++) { if ((error = copyin(&rcm->green[i], &cm->cm_map[index + i][2], 1)) != 0) return (error); cm->cm_map[index + i][0] = 0; /* no alpha channel */ } return (0); } void vigra_loadcmap_immediate(struct vigra_softc *sc, int start, int ncolors) { u_int32_t *colp = &sc->sc_cmap.cm_chip[start]; volatile u_int32_t *lutp; if (sc->sc_g300) lutp = &(sc->sc_ramdac->g300.cmap[start]); else lutp = &(sc->sc_ramdac->g335.cmap[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->imr = 1; } void vigra_burner(void *v, u_int on, u_int flags) { struct vigra_softc *sc = v; if (on) { sc->sc_regs->bcr = 0; } else { sc->sc_regs->bcr = 1; } } int vigra_intr(void *v) { struct vigra_softc *sc = v; if (sc->sc_regs->imr == 0 || !ISSET(sc->sc_regs->g3sr, STATUS_INTR)) { /* Not expecting an interrupt, it's not for us. */ return (0); } /* Acknowledge the interrupt and disable it. */ sc->sc_regs->imr = 0; vigra_loadcmap_immediate(sc, 0, 256); return (1); }