/* * Copyright (c) 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratory. * * %sccs.include.redist.c% * * @(#)cgsix.c 8.4 (Berkeley) 01/21/94 * * from: $Header: cgsix.c,v 1.2 93/10/18 00:01:51 torek Exp $ */ /* * color display (cgsix) driver. * * Does not handle interrupts, even though they can occur. * * XXX should defer colormap updates to vertical retrace interrupts */ #include #include #include #include #include #include #include #include #ifdef DEBUG #include #include #endif #include #include #include #include #include #include #include union cursor_cmap { /* colormap, like bt_cmap, but tiny */ u_char cm_map[2][3]; /* 2 R/G/B entries */ u_int cm_chip[2]; /* 2 chip equivalents */ }; struct cg6_cursor { /* cg6 hardware cursor status */ short cc_enable; /* cursor is enabled */ struct fbcurpos cc_pos; /* position */ struct fbcurpos cc_hot; /* hot-spot */ struct fbcurpos cc_size; /* size of mask & image fields */ u_int cc_bits[2][32]; /* space for mask & image bits */ union cursor_cmap cc_color; /* cursor colormap */ }; /* per-display variables */ struct cgsix_softc { struct device sc_dev; /* base device */ struct sbusdev sc_sd; /* sbus device */ struct fbdevice sc_fb; /* frame buffer device */ volatile struct cg6_layout *sc_physadr; /* phys addr of h/w */ volatile struct bt_regs *sc_bt; /* Brooktree registers */ volatile int *sc_fhc; /* FHC register */ volatile struct cg6_thc *sc_thc; /* THC registers */ volatile struct cg6_tec_xxx *sc_tec; /* TEC registers */ short sc_fhcrev; /* hardware rev */ short sc_blanked; /* true if blanked */ struct cg6_cursor sc_cursor; /* software cursor info */ union bt_cmap sc_cmap; /* Brooktree color map */ }; /* autoconfiguration driver */ static void cgsixattach(struct device *, struct device *, void *); struct cfdriver cgsixcd = { NULL, "cgsix", matchbyname, cgsixattach, DV_DULL, sizeof(struct cgsix_softc) }; /* frame buffer generic driver */ static void cg6_unblank(struct device *); static struct fbdriver cg6_fbdriver = { cg6_unblank }; /* * Unlike the bw2 and cg3 drivers, we do not need to provide an rconsole * interface, as the cg6 is fast enough. */ extern int fbnode; #define CGSIX_MAJOR 67 /* XXX */ static void cg6_reset __P((struct cgsix_softc *)); static void cg6_loadcmap __P((struct cgsix_softc *, int, int)); static void cg6_loadomap __P((struct cgsix_softc *)); static void cg6_setcursor __P((struct cgsix_softc *));/* set position */ static void cg6_loadcursor __P((struct cgsix_softc *));/* set shape */ /* * Attach a display. */ void cgsixattach(parent, self, args) struct device *parent, *self; void *args; { register struct cgsix_softc *sc = (struct cgsix_softc *)self; register struct sbus_attach_args *sa = args; register int node = sa->sa_ra.ra_node, ramsize, i; register volatile struct bt_regs *bt; register volatile struct cg6_layout *p; sc->sc_fb.fb_major = CGSIX_MAJOR; /* XXX to be removed */ sc->sc_fb.fb_driver = &cg6_fbdriver; sc->sc_fb.fb_device = &sc->sc_dev; sc->sc_fb.fb_type.fb_type = FBTYPE_SUNFAST_COLOR; sc->sc_fb.fb_type.fb_width = getpropint(node, "width", 1152); sc->sc_fb.fb_type.fb_height = getpropint(node, "height", 900); sc->sc_fb.fb_linebytes = getpropint(node, "linebytes", 1152); ramsize = sc->sc_fb.fb_type.fb_height * sc->sc_fb.fb_linebytes; sc->sc_fb.fb_type.fb_depth = 8; sc->sc_fb.fb_type.fb_cmsize = 256; sc->sc_fb.fb_type.fb_size = ramsize; printf(": %s, %d x %d", getpropstring(node, "model"), sc->sc_fb.fb_type.fb_width, sc->sc_fb.fb_type.fb_height); /* * Dunno what the PROM has mapped, though obviously it must have * the video RAM mapped. Just map what we care about for ourselves * (the FHC, THC, and Brooktree registers). */ sc->sc_physadr = p = (struct cg6_layout *)sa->sa_ra.ra_paddr; sc->sc_bt = bt = (volatile struct bt_regs *) mapiodev((caddr_t)&p->cg6_bt_un.un_btregs, sizeof *sc->sc_bt); sc->sc_fhc = (volatile int *) mapiodev((caddr_t)&p->cg6_fhc_un.un_fhc, sizeof *sc->sc_fhc); sc->sc_thc = (volatile struct cg6_thc *) mapiodev((caddr_t)&p->cg6_thc_un.un_thc, sizeof *sc->sc_thc); sc->sc_tec = (volatile struct cg6_tec_xxx *) mapiodev((caddr_t)&p->cg6_tec_un.un_tec, sizeof *sc->sc_tec); sc->sc_fhcrev = (*sc->sc_fhc >> FHC_REV_SHIFT) & (FHC_REV_MASK >> FHC_REV_SHIFT); printf(", rev %d", sc->sc_fhcrev); /* reset cursor & frame buffer controls */ cg6_reset(sc); /* grab initial (current) color map (DOES THIS WORK?) */ bt->bt_addr = 0; for (i = 0; i < 256 * 3; i++) ((char *)&sc->sc_cmap)[i] = bt->bt_cmap >> 24; /* enable video */ sc->sc_thc->thc_misc |= THC_MISC_VIDEN; printf("\n"); sbus_establish(&sc->sc_sd, &sc->sc_dev); if (node == fbnode) fb_attach(&sc->sc_fb); } int cgsixopen(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { int unit = minor(dev); if (unit >= cgsixcd.cd_ndevs || cgsixcd.cd_devs[unit] == NULL) return (ENXIO); return (0); } int cgsixclose(dev, flags, mode, p) dev_t dev; int flags, mode; struct proc *p; { struct cgsix_softc *sc = cgsixcd.cd_devs[minor(dev)]; cg6_reset(sc); return (0); } int cgsixioctl(dev, cmd, data, flags, p) dev_t dev; int cmd; register caddr_t data; int flags; struct proc *p; { register struct cgsix_softc *sc = cgsixcd.cd_devs[minor(dev)]; u_int count; int i, v, error; union cursor_cmap tcm; switch (cmd) { case FBIOGTYPE: *(struct fbtype *)data = sc->sc_fb.fb_type; break; case FBIOGATTR: #define fba ((struct fbgattr *)data) fba->real_type = sc->sc_fb.fb_type.fb_type; fba->owner = 0; /* XXX ??? */ fba->fbtype = sc->sc_fb.fb_type; fba->sattr.flags = 0; fba->sattr.emu_type = sc->sc_fb.fb_type.fb_type; fba->sattr.dev_specific[0] = -1; fba->emu_types[0] = sc->sc_fb.fb_type.fb_type; fba->emu_types[1] = -1; #undef fba break; case FBIOGETCMAP: return (bt_getcmap((struct fbcmap *)data, &sc->sc_cmap, 256)); case FBIOPUTCMAP: /* copy to software map */ #define p ((struct fbcmap *)data) error = bt_putcmap(p, &sc->sc_cmap, 256); if (error) return (error); /* now blast them into the chip */ /* XXX should use retrace interrupt */ cg6_loadcmap(sc, p->index, p->count); #undef p break; case FBIOGVIDEO: *(int *)data = sc->sc_blanked; break; case FBIOSVIDEO: if (*(int *)data) cg6_unblank(&sc->sc_dev); else if (!sc->sc_blanked) { sc->sc_blanked = 1; sc->sc_thc->thc_misc &= ~THC_MISC_VIDEN; } break; /* these are for both FBIOSCURSOR and FBIOGCURSOR */ #define p ((struct fbcursor *)data) #define cc (&sc->sc_cursor) case FBIOGCURSOR: /* do not quite want everything here... */ p->set = FB_CUR_SETALL; /* close enough, anyway */ p->enable = cc->cc_enable; p->pos = cc->cc_pos; p->hot = cc->cc_hot; p->size = cc->cc_size; /* begin ugh ... can we lose some of this crap?? */ if (p->image != NULL) { count = cc->cc_size.y * 32 / NBBY; error = copyout((caddr_t)cc->cc_bits[1], (caddr_t)p->image, count); if (error) return (error); error = copyout((caddr_t)cc->cc_bits[0], (caddr_t)p->mask, count); if (error) return (error); } if (p->cmap.red != NULL) { error = bt_getcmap(&p->cmap, (union bt_cmap *)&cc->cc_color, 2); if (error) return (error); } else { p->cmap.index = 0; p->cmap.count = 2; } /* end ugh */ break; case FBIOSCURSOR: /* * For setcmap and setshape, verify parameters, so that * we do not get halfway through an update and then crap * out with the software state screwed up. */ v = p->set; if (v & FB_CUR_SETCMAP) { /* * This use of a temporary copy of the cursor * colormap is not terribly efficient, but these * copies are small (8 bytes)... */ tcm = cc->cc_color; error = bt_putcmap(&p->cmap, (union bt_cmap *)&tcm, 2); if (error) return (error); } if (v & FB_CUR_SETSHAPE) { if ((u_int)p->size.x > 32 || (u_int)p->size.y > 32) return (EINVAL); count = p->size.y * 32 / NBBY; if (!useracc(p->image, count, B_READ) || !useracc(p->mask, count, B_READ)) return (EFAULT); } /* parameters are OK; do it */ if (v & (FB_CUR_SETCUR | FB_CUR_SETPOS | FB_CUR_SETHOT)) { if (v & FB_CUR_SETCUR) cc->cc_enable = p->enable; if (v & FB_CUR_SETPOS) cc->cc_pos = p->pos; if (v & FB_CUR_SETHOT) cc->cc_hot = p->hot; cg6_setcursor(sc); } if (v & FB_CUR_SETCMAP) { cc->cc_color = tcm; cg6_loadomap(sc); /* XXX defer to vertical retrace */ } if (v & FB_CUR_SETSHAPE) { cc->cc_size = p->size; count = p->size.y * 32 / NBBY; bzero((caddr_t)cc->cc_bits, sizeof cc->cc_bits); bcopy(p->mask, (caddr_t)cc->cc_bits[0], count); bcopy(p->image, (caddr_t)cc->cc_bits[1], count); cg6_loadcursor(sc); } break; #undef p #undef cc case FBIOGCURPOS: *(struct fbcurpos *)data = sc->sc_cursor.cc_pos; break; case FBIOSCURPOS: sc->sc_cursor.cc_pos = *(struct fbcurpos *)data; cg6_setcursor(sc); break; case FBIOGCURMAX: /* max cursor size is 32x32 */ ((struct fbcurpos *)data)->x = 32; ((struct fbcurpos *)data)->y = 32; break; default: #ifdef DEBUG log(LOG_NOTICE, "cgsixioctl(%x) (%s[%d])\n", cmd, p->p_comm, p->p_pid); #endif return (ENOTTY); } return (0); } /* * Clean up hardware state (e.g., after bootup or after X crashes). */ static void cg6_reset(sc) register struct cgsix_softc *sc; { register volatile struct cg6_tec_xxx *tec; register int fhc; register volatile struct bt_regs *bt; /* hide the cursor, just in case */ sc->sc_thc->thc_cursxy = (THC_CURSOFF << 16) | THC_CURSOFF; /* turn off frobs in transform engine (makes X11 work) */ tec = sc->sc_tec; tec->tec_mv = 0; tec->tec_clip = 0; tec->tec_vdc = 0; /* take care of hardware bugs in old revisions */ if (sc->sc_fhcrev < 5) { /* * Keep current resolution; set cpu to 68020, set test * window (size 1Kx1K), and for rev 1, disable dest cache. */ fhc = (*sc->sc_fhc & FHC_RES_MASK) | FHC_CPU_68020 | FHC_TEST | (11 << FHC_TESTX_SHIFT) | (11 << FHC_TESTY_SHIFT); if (sc->sc_fhcrev < 2) fhc |= FHC_DST_DISABLE; *sc->sc_fhc = fhc; } /* Enable cursor in Brooktree DAC. */ bt = sc->sc_bt; bt->bt_addr = 0x06 << 24; bt->bt_ctrl |= 0x03 << 24; } static void cg6_setcursor(sc) register struct cgsix_softc *sc; { /* we need to subtract the hot-spot value here */ #define COORD(f) (sc->sc_cursor.cc_pos.f - sc->sc_cursor.cc_hot.f) sc->sc_thc->thc_cursxy = sc->sc_cursor.cc_enable ? ((COORD(x) << 16) | (COORD(y) & 0xffff)) : (THC_CURSOFF << 16) | THC_CURSOFF; #undef COORD } static void cg6_loadcursor(sc) register struct cgsix_softc *sc; { register volatile struct cg6_thc *thc; register u_int edgemask, m; register int i; /* * Keep the top size.x bits. Here we *throw out* the top * size.x bits from an all-one-bits word, introducing zeros in * the top size.x bits, then invert all the bits to get what * we really wanted as our mask. But this fails if size.x is * 32---a sparc uses only the low 5 bits of the shift count--- * so we have to special case that. */ edgemask = ~0; if (sc->sc_cursor.cc_size.x < 32) edgemask = ~(edgemask >> sc->sc_cursor.cc_size.x); thc = sc->sc_thc; for (i = 0; i < 32; i++) { m = sc->sc_cursor.cc_bits[0][i] & edgemask; thc->thc_cursmask[i] = m; thc->thc_cursbits[i] = m & sc->sc_cursor.cc_bits[1][i]; } } /* * Load a subset of the current (new) colormap into the color DAC. */ static void cg6_loadcmap(sc, start, ncolors) register struct cgsix_softc *sc; register int start, ncolors; { register volatile struct bt_regs *bt; register u_int *ip, i; register int count; ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */ count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3; bt = sc->sc_bt; bt->bt_addr = BT_D4M4(start) << 24; while (--count >= 0) { i = *ip++; /* hardware that makes one want to pound boards with hammers */ bt->bt_cmap = i; bt->bt_cmap = i << 8; bt->bt_cmap = i << 16; bt->bt_cmap = i << 24; } } /* * Load the cursor (overlay `foreground' and `background') colors. */ static void cg6_loadomap(sc) register struct cgsix_softc *sc; { register volatile struct bt_regs *bt; register u_int i; bt = sc->sc_bt; bt->bt_addr = 0x01 << 24; /* set background color */ i = sc->sc_cursor.cc_color.cm_chip[0]; bt->bt_omap = i; /* R */ bt->bt_omap = i << 8; /* G */ bt->bt_omap = i << 16; /* B */ bt->bt_addr = 0x03 << 24; /* set foreground color */ bt->bt_omap = i << 24; /* R */ i = sc->sc_cursor.cc_color.cm_chip[1]; bt->bt_omap = i; /* G */ bt->bt_omap = i << 8; /* B */ } static void cg6_unblank(dev) struct device *dev; { struct cgsix_softc *sc = (struct cgsix_softc *)dev; if (sc->sc_blanked) { sc->sc_blanked = 0; sc->sc_thc->thc_misc |= THC_MISC_VIDEN; } } /* XXX the following should be moved to a "user interface" header */ /* * Base addresses at which users can mmap() the various pieces of a cg6. * Note that although the Brooktree color registers do not occupy 8K, * the X server dies if we do not allow it to map 8K there (it just maps * from 0x70000000 forwards, as a contiguous chunk). */ #define CG6_USER_FBC 0x70000000 #define CG6_USER_TEC 0x70001000 #define CG6_USER_BTREGS 0x70002000 #define CG6_USER_FHC 0x70004000 #define CG6_USER_THC 0x70005000 #define CG6_USER_ROM 0x70006000 #define CG6_USER_RAM 0x70016000 #define CG6_USER_DHC 0x80000000 struct mmo { u_int mo_uaddr; /* user (virtual) address */ u_int mo_size; /* size, or 0 for video ram size */ u_int mo_physoff; /* offset from sc_physadr */ }; /* * Return the address that would map the given device at the given * offset, allowing for the given protection, or return -1 for error. * * XXX needs testing against `demanding' applications (e.g., aviator) */ int cgsixmap(dev, off, prot) dev_t dev; int off, prot; { register struct cgsix_softc *sc = cgsixcd.cd_devs[minor(dev)]; register struct mmo *mo; register u_int u, sz; #define O(memb) ((u_int)(&((struct cg6_layout *)0)->memb)) static struct mmo mmo[] = { { CG6_USER_RAM, 0, O(cg6_ram) }, /* do not actually know how big most of these are! */ { CG6_USER_FBC, 1, O(cg6_fbc_un) }, { CG6_USER_TEC, 1, O(cg6_tec_un) }, { CG6_USER_BTREGS, 8192 /* XXX */, O(cg6_bt_un) }, { CG6_USER_FHC, 1, O(cg6_fhc_un) }, { CG6_USER_THC, sizeof(struct cg6_thc), O(cg6_thc_un) }, { CG6_USER_ROM, 65536, O(cg6_rom_un) }, { CG6_USER_DHC, 1, O(cg6_dhc_un) }, }; #define NMMO (sizeof mmo / sizeof *mmo) if (off & PGOFSET) panic("cgsixmap"); /* * Entries with size 0 map video RAM (i.e., the size in fb data). * * Since we work in pages, the fact that the map offset table's * sizes are sometimes bizarre (e.g., 1) is effectively ignored: * one byte is as good as one page. */ for (mo = mmo; mo < &mmo[NMMO]; mo++) { if ((u_int)off < mo->mo_uaddr) continue; u = off - mo->mo_uaddr; sz = mo->mo_size ? mo->mo_size : sc->sc_fb.fb_type.fb_size; if (u < sz) return ((int)sc->sc_physadr + u + mo->mo_physoff + PMAP_OBIO + PMAP_NC); } #ifdef DEBUG { register struct proc *p = curproc; /* XXX */ log(LOG_NOTICE, "cgsixmap(%x) (%s[%d])\n", off, p->p_comm, p->p_pid); } #endif return (-1); /* not a user-map offset */ }